/*
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/*
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* linux/drivers/block/ide.c Version 5.53 Jun 24, 1997
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* linux/drivers/block/ide.c Version 5.53 Jun 24, 1997
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*
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*
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* Copyright (C) 1994-1996 Linus Torvalds & authors (see below)
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* Copyright (C) 1994-1996 Linus Torvalds & authors (see below)
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*/
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*/
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#define _IDE_C /* needed by <linux/blk.h> */
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#define _IDE_C /* needed by <linux/blk.h> */
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|
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/*
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/*
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* Maintained by Mark Lord <mlord@pobox.com>
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* Maintained by Mark Lord <mlord@pobox.com>
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* and Gadi Oxman <gadio@netvision.net.il>
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* and Gadi Oxman <gadio@netvision.net.il>
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*
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*
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* This is the multiple IDE interface driver, as evolved from hd.c.
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* This is the multiple IDE interface driver, as evolved from hd.c.
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* It supports up to four IDE interfaces, on one or more IRQs (usually 14 & 15).
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* It supports up to four IDE interfaces, on one or more IRQs (usually 14 & 15).
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* There can be up to two drives per interface, as per the ATA-2 spec.
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* There can be up to two drives per interface, as per the ATA-2 spec.
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*
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*
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* Primary: ide0, port 0x1f0; major=3; hda is minor=0; hdb is minor=64
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* Primary: ide0, port 0x1f0; major=3; hda is minor=0; hdb is minor=64
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* Secondary: ide1, port 0x170; major=22; hdc is minor=0; hdd is minor=64
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* Secondary: ide1, port 0x170; major=22; hdc is minor=0; hdd is minor=64
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* Tertiary: ide2, port 0x???; major=33; hde is minor=0; hdf is minor=64
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* Tertiary: ide2, port 0x???; major=33; hde is minor=0; hdf is minor=64
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* Quaternary: ide3, port 0x???; major=34; hdg is minor=0; hdh is minor=64
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* Quaternary: ide3, port 0x???; major=34; hdg is minor=0; hdh is minor=64
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*
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*
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* It is easy to extend ide.c to handle more than four interfaces:
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* It is easy to extend ide.c to handle more than four interfaces:
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*
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*
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* Change the MAX_HWIFS constant in ide.h.
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* Change the MAX_HWIFS constant in ide.h.
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*
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*
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* Define some new major numbers (in major.h), and insert them into
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* Define some new major numbers (in major.h), and insert them into
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* the ide_hwif_to_major table in ide.c.
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* the ide_hwif_to_major table in ide.c.
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*
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*
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* Fill in the extra values for the new interfaces into the two tables
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* Fill in the extra values for the new interfaces into the two tables
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* inside ide.c: default_io_base[] and default_irqs[].
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* inside ide.c: default_io_base[] and default_irqs[].
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*
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*
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* Create the new request handlers by cloning "do_ide3_request()"
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* Create the new request handlers by cloning "do_ide3_request()"
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* for each new interface, and add them to the switch statement
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* for each new interface, and add them to the switch statement
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* in the ide_init() function in ide.c.
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* in the ide_init() function in ide.c.
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*
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*
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* Recompile, create the new /dev/ entries, and it will probably work.
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* Recompile, create the new /dev/ entries, and it will probably work.
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*
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*
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* From hd.c:
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* From hd.c:
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* |
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* |
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* | It traverses the request-list, using interrupts to jump between functions.
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* | It traverses the request-list, using interrupts to jump between functions.
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* | As nearly all functions can be called within interrupts, we may not sleep.
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* | As nearly all functions can be called within interrupts, we may not sleep.
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* | Special care is recommended. Have Fun!
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* | Special care is recommended. Have Fun!
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* |
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* |
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* | modified by Drew Eckhardt to check nr of hd's from the CMOS.
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* | modified by Drew Eckhardt to check nr of hd's from the CMOS.
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* |
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* |
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* | Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug
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* | Thanks to Branko Lankester, lankeste@fwi.uva.nl, who found a bug
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* | in the early extended-partition checks and added DM partitions.
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* | in the early extended-partition checks and added DM partitions.
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* |
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* |
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* | Early work on error handling by Mika Liljeberg (liljeber@cs.Helsinki.FI).
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* | Early work on error handling by Mika Liljeberg (liljeber@cs.Helsinki.FI).
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* |
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* |
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* | IRQ-unmask, drive-id, multiple-mode, support for ">16 heads",
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* | IRQ-unmask, drive-id, multiple-mode, support for ">16 heads",
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* | and general streamlining by Mark Lord (mlord@pobox.com).
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* | and general streamlining by Mark Lord (mlord@pobox.com).
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*
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*
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* October, 1994 -- Complete line-by-line overhaul for linux 1.1.x, by:
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* October, 1994 -- Complete line-by-line overhaul for linux 1.1.x, by:
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*
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*
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* Mark Lord (mlord@pobox.com) (IDE Perf.Pkg)
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* Mark Lord (mlord@pobox.com) (IDE Perf.Pkg)
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* Delman Lee (delman@mipg.upenn.edu) ("Mr. atdisk2")
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* Delman Lee (delman@mipg.upenn.edu) ("Mr. atdisk2")
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* Scott Snyder (snyder@fnald0.fnal.gov) (ATAPI IDE cd-rom)
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* Scott Snyder (snyder@fnald0.fnal.gov) (ATAPI IDE cd-rom)
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*
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*
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* This was a rewrite of just about everything from hd.c, though some original
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* This was a rewrite of just about everything from hd.c, though some original
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* code is still sprinkled about. Think of it as a major evolution, with
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* code is still sprinkled about. Think of it as a major evolution, with
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* inspiration from lots of linux users, esp. hamish@zot.apana.org.au
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* inspiration from lots of linux users, esp. hamish@zot.apana.org.au
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*
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*
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* Version 1.0 ALPHA initial code, primary i/f working okay
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* Version 1.0 ALPHA initial code, primary i/f working okay
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* Version 1.3 BETA dual i/f on shared irq tested & working!
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* Version 1.3 BETA dual i/f on shared irq tested & working!
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* Version 1.4 BETA added auto probing for irq(s)
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* Version 1.4 BETA added auto probing for irq(s)
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* Version 1.5 BETA added ALPHA (untested) support for IDE cd-roms,
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* Version 1.5 BETA added ALPHA (untested) support for IDE cd-roms,
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* ...
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* ...
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* Version 3.5 correct the bios_cyl field if it's too small
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* Version 3.5 correct the bios_cyl field if it's too small
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* (linux 1.1.76) (to help fdisk with brain-dead BIOSs)
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* (linux 1.1.76) (to help fdisk with brain-dead BIOSs)
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* Version 3.6 cosmetic corrections to comments and stuff
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* Version 3.6 cosmetic corrections to comments and stuff
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* (linux 1.1.77) reorganise probing code to make it understandable
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* (linux 1.1.77) reorganise probing code to make it understandable
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* added halfway retry to probing for drive identification
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* added halfway retry to probing for drive identification
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* added "hdx=noprobe" command line option
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* added "hdx=noprobe" command line option
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* allow setting multmode even when identification fails
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* allow setting multmode even when identification fails
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* Version 3.7 move set_geometry=1 from do_identify() to ide_init()
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* Version 3.7 move set_geometry=1 from do_identify() to ide_init()
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* increase DRQ_WAIT to eliminate nuisance messages
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* increase DRQ_WAIT to eliminate nuisance messages
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* wait for DRQ_STAT instead of DATA_READY during probing
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* wait for DRQ_STAT instead of DATA_READY during probing
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* (courtesy of Gary Thomas gary@efland.UU.NET)
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* (courtesy of Gary Thomas gary@efland.UU.NET)
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* Version 3.8 fixed byte-swapping for confused Mitsumi cdrom drives
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* Version 3.8 fixed byte-swapping for confused Mitsumi cdrom drives
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* update of ide-cd.c from Scott, allows blocksize=1024
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* update of ide-cd.c from Scott, allows blocksize=1024
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* cdrom probe fixes, inspired by jprang@uni-duisburg.de
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* cdrom probe fixes, inspired by jprang@uni-duisburg.de
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* Version 3.9 don't use LBA if lba_capacity looks funny
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* Version 3.9 don't use LBA if lba_capacity looks funny
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* correct the drive capacity calculations
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* correct the drive capacity calculations
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* fix probing for old Seagates without IDE_ALTSTATUS_REG
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* fix probing for old Seagates without IDE_ALTSTATUS_REG
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* fix byte-ordering for some NEC cdrom drives
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* fix byte-ordering for some NEC cdrom drives
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* Version 3.10 disable multiple mode by default; was causing trouble
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* Version 3.10 disable multiple mode by default; was causing trouble
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* Version 3.11 fix mis-identification of old WD disks as cdroms
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* Version 3.11 fix mis-identification of old WD disks as cdroms
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* Version 3,12 simplify logic for selecting initial mult_count
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* Version 3,12 simplify logic for selecting initial mult_count
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* (fixes problems with buggy WD drives)
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* (fixes problems with buggy WD drives)
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* Version 3.13 remove excess "multiple mode disabled" messages
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* Version 3.13 remove excess "multiple mode disabled" messages
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* Version 3.14 fix ide_error() handling of BUSY_STAT
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* Version 3.14 fix ide_error() handling of BUSY_STAT
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* fix byte-swapped cdrom strings (again.. arghh!)
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* fix byte-swapped cdrom strings (again.. arghh!)
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* ignore INDEX bit when checking the ALTSTATUS reg
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* ignore INDEX bit when checking the ALTSTATUS reg
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* Version 3.15 add SINGLE_THREADED flag for use with dual-CMD i/f
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* Version 3.15 add SINGLE_THREADED flag for use with dual-CMD i/f
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* ignore WRERR_STAT for non-write operations
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* ignore WRERR_STAT for non-write operations
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* added vlb_sync support for DC-2000A & others,
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* added vlb_sync support for DC-2000A & others,
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* (incl. some Promise chips), courtesy of Frank Gockel
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* (incl. some Promise chips), courtesy of Frank Gockel
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* Version 3.16 convert vlb_32bit and vlb_sync into runtime flags
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* Version 3.16 convert vlb_32bit and vlb_sync into runtime flags
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* add ioctls to get/set VLB flags (HDIO_[SG]ET_CHIPSET)
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* add ioctls to get/set VLB flags (HDIO_[SG]ET_CHIPSET)
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* rename SINGLE_THREADED to SUPPORT_SERIALIZE,
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* rename SINGLE_THREADED to SUPPORT_SERIALIZE,
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* add boot flag to "serialize" operation for CMD i/f
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* add boot flag to "serialize" operation for CMD i/f
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* add optional support for DTC2278 interfaces,
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* add optional support for DTC2278 interfaces,
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* courtesy of andy@cercle.cts.com (Dyan Wile).
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* courtesy of andy@cercle.cts.com (Dyan Wile).
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* add boot flag to enable "dtc2278" probe
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* add boot flag to enable "dtc2278" probe
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* add probe to avoid EATA (SCSI) interfaces,
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* add probe to avoid EATA (SCSI) interfaces,
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* courtesy of neuffer@goofy.zdv.uni-mainz.de.
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* courtesy of neuffer@goofy.zdv.uni-mainz.de.
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* Version 4.00 tidy up verify_area() calls - heiko@colossus.escape.de
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* Version 4.00 tidy up verify_area() calls - heiko@colossus.escape.de
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* add flag to ignore WRERR_STAT for some drives
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* add flag to ignore WRERR_STAT for some drives
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* courtesy of David.H.West@um.cc.umich.edu
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* courtesy of David.H.West@um.cc.umich.edu
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* assembly syntax tweak to vlb_sync
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* assembly syntax tweak to vlb_sync
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* removable drive support from scuba@cs.tu-berlin.de
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* removable drive support from scuba@cs.tu-berlin.de
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* add transparent support for DiskManager-6.0x "Dynamic
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* add transparent support for DiskManager-6.0x "Dynamic
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* Disk Overlay" (DDO), most of this is in genhd.c
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* Disk Overlay" (DDO), most of this is in genhd.c
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* eliminate "multiple mode turned off" message at boot
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* eliminate "multiple mode turned off" message at boot
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* Version 4.10 fix bug in ioctl for "hdparm -c3"
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* Version 4.10 fix bug in ioctl for "hdparm -c3"
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* fix DM6:DDO support -- now works with LILO, fdisk, ...
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* fix DM6:DDO support -- now works with LILO, fdisk, ...
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* don't treat some naughty WD drives as removable
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* don't treat some naughty WD drives as removable
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* Version 4.11 updated DM6 support using info provided by OnTrack
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* Version 4.11 updated DM6 support using info provided by OnTrack
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* Version 5.00 major overhaul, multmode setting fixed, vlb_sync fixed
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* Version 5.00 major overhaul, multmode setting fixed, vlb_sync fixed
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* added support for 3rd/4th/alternative IDE ports
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* added support for 3rd/4th/alternative IDE ports
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* created ide.h; ide-cd.c now compiles separate from ide.c
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* created ide.h; ide-cd.c now compiles separate from ide.c
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* hopefully fixed infinite "unexpected_intr" from cdroms
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* hopefully fixed infinite "unexpected_intr" from cdroms
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* zillions of other changes and restructuring
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* zillions of other changes and restructuring
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* somehow reduced overall memory usage by several kB
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* somehow reduced overall memory usage by several kB
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* probably slowed things down slightly, but worth it
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* probably slowed things down slightly, but worth it
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* Version 5.01 AT LAST!! Finally understood why "unexpected_intr"
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* Version 5.01 AT LAST!! Finally understood why "unexpected_intr"
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* was happening at various times/places: whenever the
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* was happening at various times/places: whenever the
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* ide-interface's ctl_port was used to "mask" the irq,
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* ide-interface's ctl_port was used to "mask" the irq,
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* it also would trigger an edge in the process of masking
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* it also would trigger an edge in the process of masking
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* which would result in a self-inflicted interrupt!!
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* which would result in a self-inflicted interrupt!!
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* (such a stupid way to build a hardware interrupt mask).
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* (such a stupid way to build a hardware interrupt mask).
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* This is now fixed (after a year of head-scratching).
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* This is now fixed (after a year of head-scratching).
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* Version 5.02 got rid of need for {enable,disable}_irq_list()
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* Version 5.02 got rid of need for {enable,disable}_irq_list()
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* Version 5.03 tune-ups, comments, remove "busy wait" from drive resets
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* Version 5.03 tune-ups, comments, remove "busy wait" from drive resets
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* removed PROBE_FOR_IRQS option -- no longer needed
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* removed PROBE_FOR_IRQS option -- no longer needed
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* OOOPS! fixed "bad access" bug for 2nd drive on an i/f
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* OOOPS! fixed "bad access" bug for 2nd drive on an i/f
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* Version 5.04 changed "ira %d" to "irq %d" in DEBUG message
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* Version 5.04 changed "ira %d" to "irq %d" in DEBUG message
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* added more comments, cleaned up unexpected_intr()
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* added more comments, cleaned up unexpected_intr()
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* OOOPS! fixed null pointer problem in ide reset code
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* OOOPS! fixed null pointer problem in ide reset code
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* added autodetect for Triton chipset -- no effect yet
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* added autodetect for Triton chipset -- no effect yet
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* Version 5.05 OOOPS! fixed bug in revalidate_disk()
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* Version 5.05 OOOPS! fixed bug in revalidate_disk()
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* OOOPS! fixed bug in ide_do_request()
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* OOOPS! fixed bug in ide_do_request()
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* added ATAPI reset sequence for cdroms
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* added ATAPI reset sequence for cdroms
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* Version 5.10 added Bus-Mastered DMA support for Triton Chipset
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* Version 5.10 added Bus-Mastered DMA support for Triton Chipset
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* some (mostly) cosmetic changes
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* some (mostly) cosmetic changes
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* Version 5.11 added ht6560b support by malafoss@snakemail.hut.fi
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* Version 5.11 added ht6560b support by malafoss@snakemail.hut.fi
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* reworked PCI scanning code
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* reworked PCI scanning code
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* added automatic RZ1000 detection/support
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* added automatic RZ1000 detection/support
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* added automatic PCI CMD640 detection/support
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* added automatic PCI CMD640 detection/support
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* added option for VLB CMD640 support
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* added option for VLB CMD640 support
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* tweaked probe to find cdrom on hdb with disks on hda,hdc
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* tweaked probe to find cdrom on hdb with disks on hda,hdc
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* Version 5.12 some performance tuning
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* Version 5.12 some performance tuning
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* added message to alert user to bad /dev/hd[cd] entries
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* added message to alert user to bad /dev/hd[cd] entries
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* OOOPS! fixed bug in atapi reset
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* OOOPS! fixed bug in atapi reset
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* driver now forces "serialize" again for all cmd640 chips
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* driver now forces "serialize" again for all cmd640 chips
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* noticed REALLY_SLOW_IO had no effect, moved it to ide.c
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* noticed REALLY_SLOW_IO had no effect, moved it to ide.c
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* made do_drive_cmd() into public ide_do_drive_cmd()
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* made do_drive_cmd() into public ide_do_drive_cmd()
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* Version 5.13 fixed typo ('B'), thanks to houston@boyd.geog.mcgill.ca
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* Version 5.13 fixed typo ('B'), thanks to houston@boyd.geog.mcgill.ca
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* fixed ht6560b support
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* fixed ht6560b support
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* Version 5.13b (sss) fix problem in calling ide_cdrom_setup()
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* Version 5.13b (sss) fix problem in calling ide_cdrom_setup()
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* don't bother invalidating nonexistent partitions
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* don't bother invalidating nonexistent partitions
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* Version 5.14 fixes to cmd640 support.. maybe it works now(?)
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* Version 5.14 fixes to cmd640 support.. maybe it works now(?)
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* added & tested full EZ-DRIVE support -- don't use LILO!
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* added & tested full EZ-DRIVE support -- don't use LILO!
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* don't enable 2nd CMD640 PCI port during init - conflict
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* don't enable 2nd CMD640 PCI port during init - conflict
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* Version 5.15 bug fix in init_cmd640_vlb()
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* Version 5.15 bug fix in init_cmd640_vlb()
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* bug fix in interrupt sharing code
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* bug fix in interrupt sharing code
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* Version 5.16 ugh.. fix "serialize" support, broken in 5.15
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* Version 5.16 ugh.. fix "serialize" support, broken in 5.15
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* remove "Huh?" from cmd640 code
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* remove "Huh?" from cmd640 code
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* added qd6580 interface speed select from Colten Edwards
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* added qd6580 interface speed select from Colten Edwards
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* Version 5.17 kludge around bug in BIOS32 on Intel triton motherboards
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* Version 5.17 kludge around bug in BIOS32 on Intel triton motherboards
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* Version 5.18 new CMD640 code, moved to cmd640.c, #include'd for now
|
* Version 5.18 new CMD640 code, moved to cmd640.c, #include'd for now
|
* new UMC8672 code, moved to umc8672.c, #include'd for now
|
* new UMC8672 code, moved to umc8672.c, #include'd for now
|
* disallow turning on DMA when h/w not capable of DMA
|
* disallow turning on DMA when h/w not capable of DMA
|
* Version 5.19 fix potential infinite timeout on resets
|
* Version 5.19 fix potential infinite timeout on resets
|
* extend reset poll into a general purpose polling scheme
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* extend reset poll into a general purpose polling scheme
|
* add atapi tape drive support from Gadi Oxman
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* add atapi tape drive support from Gadi Oxman
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* simplify exit from _intr routines -- no IDE_DO_REQUEST
|
* simplify exit from _intr routines -- no IDE_DO_REQUEST
|
* Version 5.20 leave current rq on blkdev request list during I/O
|
* Version 5.20 leave current rq on blkdev request list during I/O
|
* generalized ide_do_drive_cmd() for tape/cdrom driver use
|
* generalized ide_do_drive_cmd() for tape/cdrom driver use
|
* Version 5.21 fix nasty cdrom/tape bug (ide_preempt was messed up)
|
* Version 5.21 fix nasty cdrom/tape bug (ide_preempt was messed up)
|
* Version 5.22 fix ide_xlate_1024() to work with/without drive->id
|
* Version 5.22 fix ide_xlate_1024() to work with/without drive->id
|
* Version 5.23 miscellaneous touch-ups
|
* Version 5.23 miscellaneous touch-ups
|
* Version 5.24 fix #if's for SUPPORT_CMD640
|
* Version 5.24 fix #if's for SUPPORT_CMD640
|
* Version 5.25 more touch-ups, fix cdrom resets, ...
|
* Version 5.25 more touch-ups, fix cdrom resets, ...
|
* cmd640.c now configs/compiles separate from ide.c
|
* cmd640.c now configs/compiles separate from ide.c
|
* Version 5.26 keep_settings now maintains the using_dma flag
|
* Version 5.26 keep_settings now maintains the using_dma flag
|
* fix [EZD] remap message to only output at boot time
|
* fix [EZD] remap message to only output at boot time
|
* fix "bad /dev/ entry" message to say hdc, not hdc0
|
* fix "bad /dev/ entry" message to say hdc, not hdc0
|
* fix ide_xlate_1024() to respect user specified CHS
|
* fix ide_xlate_1024() to respect user specified CHS
|
* use CHS from partn table if it looks translated
|
* use CHS from partn table if it looks translated
|
* re-merged flags chipset,vlb_32bit,vlb_sync into io_32bit
|
* re-merged flags chipset,vlb_32bit,vlb_sync into io_32bit
|
* keep track of interface chipset type, when known
|
* keep track of interface chipset type, when known
|
* add generic PIO mode "tuneproc" mechanism
|
* add generic PIO mode "tuneproc" mechanism
|
* fix cmd640_vlb option
|
* fix cmd640_vlb option
|
* fix ht6560b support (was completely broken)
|
* fix ht6560b support (was completely broken)
|
* umc8672.c now configures/compiles separate from ide.c
|
* umc8672.c now configures/compiles separate from ide.c
|
* move dtc2278 support to dtc2278.c
|
* move dtc2278 support to dtc2278.c
|
* move ht6560b support to ht6560b.c
|
* move ht6560b support to ht6560b.c
|
* move qd6580 support to qd6580.c
|
* move qd6580 support to qd6580.c
|
* add ali14xx support in ali14xx.c
|
* add ali14xx support in ali14xx.c
|
* Version 5.27 add [no]autotune parameters to help cmd640
|
* Version 5.27 add [no]autotune parameters to help cmd640
|
* move rz1000 support to rz1000.c
|
* move rz1000 support to rz1000.c
|
* Version 5.28 #include "ide_modes.h"
|
* Version 5.28 #include "ide_modes.h"
|
* fix disallow_unmask: now per-interface "no_unmask" bit
|
* fix disallow_unmask: now per-interface "no_unmask" bit
|
* force io_32bit to be the same on drive pairs of dtc2278
|
* force io_32bit to be the same on drive pairs of dtc2278
|
* improved IDE tape error handling, and tape DMA support
|
* improved IDE tape error handling, and tape DMA support
|
* bugfix in ide_do_drive_cmd() for cdroms + serialize
|
* bugfix in ide_do_drive_cmd() for cdroms + serialize
|
* Version 5.29 fixed non-IDE check for too many physical heads
|
* Version 5.29 fixed non-IDE check for too many physical heads
|
* don't use LBA if capacity is smaller than CHS
|
* don't use LBA if capacity is smaller than CHS
|
* Version 5.30 remove real_devices kludge, formerly used by genhd.c
|
* Version 5.30 remove real_devices kludge, formerly used by genhd.c
|
* Version 5.32 change "KB" to "kB"
|
* Version 5.32 change "KB" to "kB"
|
* fix serialize (was broken in kernel 1.3.72)
|
* fix serialize (was broken in kernel 1.3.72)
|
* add support for "hdparm -I"
|
* add support for "hdparm -I"
|
* use common code for disk/tape/cdrom IDE_DRIVE_CMDs
|
* use common code for disk/tape/cdrom IDE_DRIVE_CMDs
|
* add support for Promise DC4030VL caching card
|
* add support for Promise DC4030VL caching card
|
* improved serialize support
|
* improved serialize support
|
* put partition check back into alphabetical order
|
* put partition check back into alphabetical order
|
* add config option for PCMCIA baggage
|
* add config option for PCMCIA baggage
|
* try to make PCMCIA support safer to use
|
* try to make PCMCIA support safer to use
|
* improve security on ioctls(): all are suser() only
|
* improve security on ioctls(): all are suser() only
|
* Version 5.33 improve handling of HDIO_DRIVE_CMDs that read data
|
* Version 5.33 improve handling of HDIO_DRIVE_CMDs that read data
|
* Version 5.34 fix irq-sharing problem from 5.33
|
* Version 5.34 fix irq-sharing problem from 5.33
|
* fix cdrom ioctl problem from 5.33
|
* fix cdrom ioctl problem from 5.33
|
* Version 5.35 cosmetic changes
|
* Version 5.35 cosmetic changes
|
* fix cli() problem in try_to_identify()
|
* fix cli() problem in try_to_identify()
|
* Version 5.36 fixes to optional PCMCIA support
|
* Version 5.36 fixes to optional PCMCIA support
|
* Version 5.37 don't use DMA when "noautotune" is specified
|
* Version 5.37 don't use DMA when "noautotune" is specified
|
* Version 5.37a (go) fix shared irq probing (was broken in kernel 1.3.72)
|
* Version 5.37a (go) fix shared irq probing (was broken in kernel 1.3.72)
|
* call unplug_device() from ide_do_drive_cmd()
|
* call unplug_device() from ide_do_drive_cmd()
|
* Version 5.38 add "hdx=none" option, courtesy of Joel Maslak
|
* Version 5.38 add "hdx=none" option, courtesy of Joel Maslak
|
* mask drive irq after use, if sharing with another hwif
|
* mask drive irq after use, if sharing with another hwif
|
* add code to help debug weird cmd640 problems
|
* add code to help debug weird cmd640 problems
|
* Version 5.39 fix horrible error in earlier irq sharing "fix"
|
* Version 5.39 fix horrible error in earlier irq sharing "fix"
|
* Version 5.40 fix serialization -- was broken in 5.39
|
* Version 5.40 fix serialization -- was broken in 5.39
|
* help sharing by masking device irq after probing
|
* help sharing by masking device irq after probing
|
* Version 5.41 more fixes to irq sharing/serialize detection
|
* Version 5.41 more fixes to irq sharing/serialize detection
|
* disable io_32bit by default on drive reset
|
* disable io_32bit by default on drive reset
|
* Version 5.42 simplify irq-masking after probe
|
* Version 5.42 simplify irq-masking after probe
|
* fix NULL pointer deref in save_match()
|
* fix NULL pointer deref in save_match()
|
* Version 5.43 Ugh.. unexpected_intr is back: try to exterminate it
|
* Version 5.43 Ugh.. unexpected_intr is back: try to exterminate it
|
* Version 5.44 Fix for "irq probe failed" on cmd640
|
* Version 5.44 Fix for "irq probe failed" on cmd640
|
* change path on message regarding MAKEDEV.ide
|
* change path on message regarding MAKEDEV.ide
|
* add a throttle to the unexpected_intr() messages
|
* add a throttle to the unexpected_intr() messages
|
* Version 5.45 fix ugly parameter parsing bugs (thanks Derek)
|
* Version 5.45 fix ugly parameter parsing bugs (thanks Derek)
|
* include Gadi's magic fix for cmd640 unexpected_intr
|
* include Gadi's magic fix for cmd640 unexpected_intr
|
* include mc68000 patches from Geert Uytterhoeven
|
* include mc68000 patches from Geert Uytterhoeven
|
* add Gadi's fix for PCMCIA cdroms
|
* add Gadi's fix for PCMCIA cdroms
|
* Version 5.46 remove the mc68000 #ifdefs for 2.0.x
|
* Version 5.46 remove the mc68000 #ifdefs for 2.0.x
|
* Version 5.47 fix set_tune race condition
|
* Version 5.47 fix set_tune race condition
|
* fix bug in earlier PCMCIA cdrom update
|
* fix bug in earlier PCMCIA cdrom update
|
* Version 5.48 if def'd, invoke CMD640_DUMP_REGS when irq probe fails
|
* Version 5.48 if def'd, invoke CMD640_DUMP_REGS when irq probe fails
|
* lengthen the do_reset1() pulse, for laptops
|
* lengthen the do_reset1() pulse, for laptops
|
* add idebus=xx parameter for cmd640 and ali chipsets
|
* add idebus=xx parameter for cmd640 and ali chipsets
|
* no_unmask flag now per-drive instead of per-hwif
|
* no_unmask flag now per-drive instead of per-hwif
|
* fix tune_req so that it gets done immediately
|
* fix tune_req so that it gets done immediately
|
* fix missing restore_flags() in ide_ioctl
|
* fix missing restore_flags() in ide_ioctl
|
* prevent use of io_32bit on cmd640 with no prefetch
|
* prevent use of io_32bit on cmd640 with no prefetch
|
* Version 5.49 fix minor quirks in probing routines
|
* Version 5.49 fix minor quirks in probing routines
|
* Version 5.50 allow values as small as 20 for idebus=
|
* Version 5.50 allow values as small as 20 for idebus=
|
* Version 5.51 force non io_32bit in drive_cmd_intr()
|
* Version 5.51 force non io_32bit in drive_cmd_intr()
|
* change delay_10ms() to delay_50ms() to fix problems
|
* change delay_10ms() to delay_50ms() to fix problems
|
* Version 5.52 fix incorrect invalidation of removable devices
|
* Version 5.52 fix incorrect invalidation of removable devices
|
* add "hdx=slow" command line option
|
* add "hdx=slow" command line option
|
* Version 5.53 add ATAPI floppy drive support
|
* Version 5.53 add ATAPI floppy drive support
|
* change default media for type 0 to floppy
|
* change default media for type 0 to floppy
|
* add support for Exabyte Nest
|
* add support for Exabyte Nest
|
* add missing set_blocksize() in revalidate_disk()
|
* add missing set_blocksize() in revalidate_disk()
|
* handle bad status bit sequencing in ide_wait_stat()
|
* handle bad status bit sequencing in ide_wait_stat()
|
* support partition table translations with 255 heads
|
* support partition table translations with 255 heads
|
* probe all interfaces by default
|
* probe all interfaces by default
|
* add probe for the i82371AB chipset
|
* add probe for the i82371AB chipset
|
* acknowledge media change on removable drives
|
* acknowledge media change on removable drives
|
* add work-around for BMI drives
|
* add work-around for BMI drives
|
* remove "LBA" from boot messages
|
* remove "LBA" from boot messages
|
* Version 5.53.1 add UDMA "CRC retry" support
|
* Version 5.53.1 add UDMA "CRC retry" support
|
* Version 5.53.2 add Promise/33 auto-detection and DMA support
|
* Version 5.53.2 add Promise/33 auto-detection and DMA support
|
* fix MC_ERR handling
|
* fix MC_ERR handling
|
* fix mis-detection of NEC cdrom as floppy
|
* fix mis-detection of NEC cdrom as floppy
|
* issue ATAPI reset and re-probe after "no response"
|
* issue ATAPI reset and re-probe after "no response"
|
*
|
*
|
*--------------------------------------------------------------------------------
|
*--------------------------------------------------------------------------------
|
* Ported to ARM architecture by Russell King (rmk@ecs.soton.ac.uk)
|
* Ported to ARM architecture by Russell King (rmk@ecs.soton.ac.uk)
|
*--------------------------------------------------------------------------------
|
*--------------------------------------------------------------------------------
|
* Some additional driver compile-time options are in ide.h
|
* Some additional driver compile-time options are in ide.h
|
*
|
*
|
* To do, in likely order of completion:
|
* To do, in likely order of completion:
|
* - modify kernel to obtain BIOS geometry for drives on 2nd/3rd/4th i/f
|
* - modify kernel to obtain BIOS geometry for drives on 2nd/3rd/4th i/f
|
*/
|
*/
|
|
|
#undef REALLY_SLOW_IO /* most systems can safely undef this */
|
#undef REALLY_SLOW_IO /* most systems can safely undef this */
|
|
|
#include <linux/config.h>
|
#include <linux/config.h>
|
#include <linux/types.h>
|
#include <linux/types.h>
|
#include <linux/string.h>
|
#include <linux/string.h>
|
#include <linux/kernel.h>
|
#include <linux/kernel.h>
|
#include <linux/delay.h>
|
#include <linux/delay.h>
|
#include <linux/timer.h>
|
#include <linux/timer.h>
|
#include <linux/mm.h>
|
#include <linux/mm.h>
|
#include <linux/ioport.h>
|
#include <linux/ioport.h>
|
#include <linux/interrupt.h>
|
#include <linux/interrupt.h>
|
#include <linux/major.h>
|
#include <linux/major.h>
|
#include <linux/blkdev.h>
|
#include <linux/blkdev.h>
|
#include <linux/errno.h>
|
#include <linux/errno.h>
|
#include <linux/hdreg.h>
|
#include <linux/hdreg.h>
|
#include <linux/genhd.h>
|
#include <linux/genhd.h>
|
#include <linux/malloc.h>
|
#include <linux/malloc.h>
|
|
|
#include <asm/byteorder.h>
|
#include <asm/byteorder.h>
|
#include <asm/irq.h>
|
#include <asm/irq.h>
|
#include <asm/segment.h>
|
#include <asm/segment.h>
|
#include <asm/io.h>
|
#include <asm/io.h>
|
|
|
#ifdef CONFIG_PCI
|
#ifdef CONFIG_PCI
|
#include <linux/bios32.h>
|
#include <linux/bios32.h>
|
#include <linux/pci.h>
|
#include <linux/pci.h>
|
#endif /* CONFIG_PCI */
|
#endif /* CONFIG_PCI */
|
|
|
#include "ide.h"
|
#include "ide.h"
|
#include "ide_modes.h"
|
#include "ide_modes.h"
|
|
|
#ifdef CONFIG_BLK_DEV_PROMISE
|
#ifdef CONFIG_BLK_DEV_PROMISE
|
#include "promise.h"
|
#include "promise.h"
|
#define IS_PROMISE_DRIVE (HWIF(drive)->chipset == ide_promise)
|
#define IS_PROMISE_DRIVE (HWIF(drive)->chipset == ide_promise)
|
#else
|
#else
|
#define IS_PROMISE_DRIVE (0) /* auto-NULLs out Promise code */
|
#define IS_PROMISE_DRIVE (0) /* auto-NULLs out Promise code */
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
|
|
static const byte ide_hwif_to_major[MAX_HWIFS] = {IDE0_MAJOR, IDE1_MAJOR, IDE2_MAJOR, IDE3_MAJOR};
|
static const byte ide_hwif_to_major[MAX_HWIFS] = {IDE0_MAJOR, IDE1_MAJOR, IDE2_MAJOR, IDE3_MAJOR};
|
#if defined(CONFIG_ARCH_RPC)
|
#if defined(CONFIG_ARCH_RPC)
|
static const unsigned long default_io_base[MAX_HWIFS] = {0x1f0};
|
static const unsigned long default_io_base[MAX_HWIFS] = {0x1f0};
|
static const byte default_irqs[MAX_HWIFS] = {9};
|
static const byte default_irqs[MAX_HWIFS] = {9};
|
#elif defined (CONFIG_ARCH_A5K)
|
#elif defined (CONFIG_ARCH_A5K)
|
static const unsigned long default_io_base[MAX_HWIFS] = {0x1f0};
|
static const unsigned long default_io_base[MAX_HWIFS] = {0x1f0};
|
static const byte default_irqs[MAX_HWIFS] = {11};
|
static const byte default_irqs[MAX_HWIFS] = {11};
|
#else
|
#else
|
static const unsigned long default_io_base[MAX_HWIFS] = {0};
|
static const unsigned long default_io_base[MAX_HWIFS] = {0};
|
static const byte default_irqs[MAX_HWIFS] = {0};
|
static const byte default_irqs[MAX_HWIFS] = {0};
|
#endif
|
#endif
|
|
|
static int idebus_parameter; /* holds the "idebus=" parameter */
|
static int idebus_parameter; /* holds the "idebus=" parameter */
|
static int system_bus_speed; /* holds what we think is VESA/PCI bus speed */
|
static int system_bus_speed; /* holds what we think is VESA/PCI bus speed */
|
|
|
/*
|
/*
|
* This is declared extern in ide.h, for access by other IDE modules:
|
* This is declared extern in ide.h, for access by other IDE modules:
|
*/
|
*/
|
ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */
|
ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */
|
|
|
#if (DISK_RECOVERY_TIME > 0)
|
#if (DISK_RECOVERY_TIME > 0)
|
#error DISK_RECOVERY_TIME is not supported on the ARM.
|
#error DISK_RECOVERY_TIME is not supported on the ARM.
|
/*
|
/*
|
* For really screwy hardware (hey, at least it *can* be used with Linux)
|
* For really screwy hardware (hey, at least it *can* be used with Linux)
|
* we can enforce a minimum delay time between successive operations.
|
* we can enforce a minimum delay time between successive operations.
|
*/
|
*/
|
static unsigned long read_timer(void)
|
static unsigned long read_timer(void)
|
{
|
{
|
unsigned long t, flags;
|
unsigned long t, flags;
|
int i;
|
int i;
|
|
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
t = jiffies * 11932;
|
t = jiffies * 11932;
|
outb_p(0, 0x43);
|
outb_p(0, 0x43);
|
i = inb_p(0x40);
|
i = inb_p(0x40);
|
i |= inb(0x40) << 8;
|
i |= inb(0x40) << 8;
|
restore_flags(flags);
|
restore_flags(flags);
|
return (t - i);
|
return (t - i);
|
}
|
}
|
|
|
static void set_recovery_timer (ide_hwif_t *hwif)
|
static void set_recovery_timer (ide_hwif_t *hwif)
|
{
|
{
|
hwif->last_time = read_timer();
|
hwif->last_time = read_timer();
|
}
|
}
|
#define SET_RECOVERY_TIMER(drive) set_recovery_timer (drive)
|
#define SET_RECOVERY_TIMER(drive) set_recovery_timer (drive)
|
|
|
#else
|
#else
|
|
|
#define SET_RECOVERY_TIMER(drive)
|
#define SET_RECOVERY_TIMER(drive)
|
|
|
#endif /* DISK_RECOVERY_TIME */
|
#endif /* DISK_RECOVERY_TIME */
|
|
|
|
|
/*
|
/*
|
* Do not even *think* about calling this!
|
* Do not even *think* about calling this!
|
*/
|
*/
|
static void init_hwif_data (unsigned int index)
|
static void init_hwif_data (unsigned int index)
|
{
|
{
|
byte *p;
|
byte *p;
|
unsigned int unit;
|
unsigned int unit;
|
ide_hwif_t *hwif = &ide_hwifs[index];
|
ide_hwif_t *hwif = &ide_hwifs[index];
|
|
|
/* bulk initialize hwif & drive info with zeros */
|
/* bulk initialize hwif & drive info with zeros */
|
p = ((byte *) hwif) + sizeof(ide_hwif_t);
|
p = ((byte *) hwif) + sizeof(ide_hwif_t);
|
do {
|
do {
|
*--p = 0;
|
*--p = 0;
|
} while (p > (byte *) hwif);
|
} while (p > (byte *) hwif);
|
|
|
/* fill in any non-zero initial values */
|
/* fill in any non-zero initial values */
|
hwif->index = index;
|
hwif->index = index;
|
hwif->io.io_base = default_io_base[index];
|
hwif->io.io_base = default_io_base[index];
|
hwif->io.ctl_port = hwif->io.io_base ? hwif->io.io_base+0x206 : 0x000;
|
hwif->io.ctl_port = hwif->io.io_base ? hwif->io.io_base+0x206 : 0x000;
|
hwif->io.io_shift = 0;
|
hwif->io.io_shift = 0;
|
#ifdef CONFIG_BLK_DEV_HD
|
#ifdef CONFIG_BLK_DEV_HD
|
if (hwif->io.io_base == HD_DATA)
|
if (hwif->io.io_base == HD_DATA)
|
hwif->noprobe = 1; /* may be overridden by ide_setup() */
|
hwif->noprobe = 1; /* may be overridden by ide_setup() */
|
#endif /* CONFIG_BLK_DEV_HD */
|
#endif /* CONFIG_BLK_DEV_HD */
|
/* RMK: do not probe ifs set at address 0 */
|
/* RMK: do not probe ifs set at address 0 */
|
if (hwif->io.io_base == 0)
|
if (hwif->io.io_base == 0)
|
hwif->noprobe = 1;
|
hwif->noprobe = 1;
|
hwif->major = ide_hwif_to_major[index];
|
hwif->major = ide_hwif_to_major[index];
|
hwif->name[0] = 'i';
|
hwif->name[0] = 'i';
|
hwif->name[1] = 'd';
|
hwif->name[1] = 'd';
|
hwif->name[2] = 'e';
|
hwif->name[2] = 'e';
|
hwif->name[3] = '0' + index;
|
hwif->name[3] = '0' + index;
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
hwif->tape_drive = NULL;
|
hwif->tape_drive = NULL;
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
for (unit = 0; unit < MAX_DRIVES; ++unit) {
|
for (unit = 0; unit < MAX_DRIVES; ++unit) {
|
ide_drive_t *drive = &hwif->drives[unit];
|
ide_drive_t *drive = &hwif->drives[unit];
|
|
|
drive->select.all = (unit<<4)|0xa0;
|
drive->select.all = (unit<<4)|0xa0;
|
drive->hwif = hwif;
|
drive->hwif = hwif;
|
drive->ctl = 0x08;
|
drive->ctl = 0x08;
|
drive->ready_stat = READY_STAT;
|
drive->ready_stat = READY_STAT;
|
drive->bad_wstat = BAD_W_STAT;
|
drive->bad_wstat = BAD_W_STAT;
|
drive->special.b.recalibrate = 1;
|
drive->special.b.recalibrate = 1;
|
drive->special.b.set_geometry = 1;
|
drive->special.b.set_geometry = 1;
|
drive->name[0] = 'h';
|
drive->name[0] = 'h';
|
drive->name[1] = 'd';
|
drive->name[1] = 'd';
|
drive->name[2] = 'a' + (index * MAX_DRIVES) + unit;
|
drive->name[2] = 'a' + (index * MAX_DRIVES) + unit;
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* init_ide_data() sets reasonable default values into all fields
|
* init_ide_data() sets reasonable default values into all fields
|
* of all instances of the hwifs and drives, but only on the first call.
|
* of all instances of the hwifs and drives, but only on the first call.
|
* Subsequent calls have no effect (they don't wipe out anything).
|
* Subsequent calls have no effect (they don't wipe out anything).
|
*
|
*
|
* This routine is normally called at driver initialization time,
|
* This routine is normally called at driver initialization time,
|
* but may also be called MUCH earlier during kernel "command-line"
|
* but may also be called MUCH earlier during kernel "command-line"
|
* parameter processing. As such, we cannot depend on any other parts
|
* parameter processing. As such, we cannot depend on any other parts
|
* of the kernel (such as memory allocation) to be functioning yet.
|
* of the kernel (such as memory allocation) to be functioning yet.
|
*
|
*
|
* This is too bad, as otherwise we could dynamically allocate the
|
* This is too bad, as otherwise we could dynamically allocate the
|
* ide_drive_t structs as needed, rather than always consuming memory
|
* ide_drive_t structs as needed, rather than always consuming memory
|
* for the max possible number (MAX_HWIFS * MAX_DRIVES) of them.
|
* for the max possible number (MAX_HWIFS * MAX_DRIVES) of them.
|
*/
|
*/
|
#define MAGIC_COOKIE 0x12345678
|
#define MAGIC_COOKIE 0x12345678
|
static void init_ide_data (void)
|
static void init_ide_data (void)
|
{
|
{
|
unsigned int index;
|
unsigned int index;
|
static unsigned long magic_cookie = MAGIC_COOKIE;
|
static unsigned long magic_cookie = MAGIC_COOKIE;
|
|
|
if (magic_cookie != MAGIC_COOKIE)
|
if (magic_cookie != MAGIC_COOKIE)
|
return; /* already initialized */
|
return; /* already initialized */
|
magic_cookie = 0;
|
magic_cookie = 0;
|
|
|
for (index = 0; index < MAX_HWIFS; ++index)
|
for (index = 0; index < MAX_HWIFS; ++index)
|
init_hwif_data(index);
|
init_hwif_data(index);
|
|
|
idebus_parameter = 0;
|
idebus_parameter = 0;
|
system_bus_speed = 0;
|
system_bus_speed = 0;
|
}
|
}
|
|
|
/*
|
/*
|
* ide_system_bus_speed() returns what we think is the system VESA/PCI
|
* ide_system_bus_speed() returns what we think is the system VESA/PCI
|
* bus speed (in Mhz). This is used for calculating interface PIO timings.
|
* bus speed (in Mhz). This is used for calculating interface PIO timings.
|
* The default is 40 for known PCI systems, 50 otherwise.
|
* The default is 40 for known PCI systems, 50 otherwise.
|
* The "idebus=xx" parameter can be used to override this value.
|
* The "idebus=xx" parameter can be used to override this value.
|
* The actual value to be used is computed/displayed the first time through.
|
* The actual value to be used is computed/displayed the first time through.
|
*/
|
*/
|
int ide_system_bus_speed (void)
|
int ide_system_bus_speed (void)
|
{
|
{
|
if (!system_bus_speed) {
|
if (!system_bus_speed) {
|
if (idebus_parameter)
|
if (idebus_parameter)
|
system_bus_speed = idebus_parameter; /* user supplied value */
|
system_bus_speed = idebus_parameter; /* user supplied value */
|
#ifdef CONFIG_PCI
|
#ifdef CONFIG_PCI
|
else if (pcibios_present())
|
else if (pcibios_present())
|
system_bus_speed = 40; /* safe default value for PCI */
|
system_bus_speed = 40; /* safe default value for PCI */
|
#endif /* CONFIG_PCI */
|
#endif /* CONFIG_PCI */
|
else
|
else
|
system_bus_speed = 50; /* safe default value for VESA and PCI */
|
system_bus_speed = 50; /* safe default value for VESA and PCI */
|
printk("ide: Assuming %dMhz system bus speed for PIO modes; override with idebus=xx\n", system_bus_speed);
|
printk("ide: Assuming %dMhz system bus speed for PIO modes; override with idebus=xx\n", system_bus_speed);
|
}
|
}
|
return system_bus_speed;
|
return system_bus_speed;
|
}
|
}
|
|
|
#if SUPPORT_VLB_SYNC
|
#if SUPPORT_VLB_SYNC
|
/*
|
/*
|
* Some localbus EIDE interfaces require a special access sequence
|
* Some localbus EIDE interfaces require a special access sequence
|
* when using 32-bit I/O instructions to transfer data. We call this
|
* when using 32-bit I/O instructions to transfer data. We call this
|
* the "vlb_sync" sequence, which consists of three successive reads
|
* the "vlb_sync" sequence, which consists of three successive reads
|
* of the sector count register location, with interrupts disabled
|
* of the sector count register location, with interrupts disabled
|
* to ensure that the reads all happen together.
|
* to ensure that the reads all happen together.
|
*/
|
*/
|
static inline void do_vlb_sync (unsigned short port) {
|
static inline void do_vlb_sync (unsigned short port) {
|
(void) inb (port);
|
(void) inb (port);
|
(void) inb (port);
|
(void) inb (port);
|
(void) inb (port);
|
(void) inb (port);
|
}
|
}
|
#endif /* SUPPORT_VLB_SYNC */
|
#endif /* SUPPORT_VLB_SYNC */
|
|
|
/*
|
/*
|
* This is used for most PIO data transfers *from* the IDE interface
|
* This is used for most PIO data transfers *from* the IDE interface
|
*/
|
*/
|
void ide_input_data (ide_drive_t *drive, void *buffer, unsigned int wcount)
|
void ide_input_data (ide_drive_t *drive, void *buffer, unsigned int wcount)
|
{
|
{
|
unsigned long io_base = HWIF(drive)->io.io_base;
|
unsigned long io_base = HWIF(drive)->io.io_base;
|
unsigned long data_reg = io_base + (IDE_DATA_OFFSET << HWIF(drive)->io.io_shift);
|
unsigned long data_reg = io_base + (IDE_DATA_OFFSET << HWIF(drive)->io.io_shift);
|
#ifndef __arm__
|
#ifndef __arm__
|
byte io_32bit = drive->io_32bit;
|
byte io_32bit = drive->io_32bit;
|
#else
|
#else
|
byte io_32bit = 0;
|
byte io_32bit = 0;
|
#endif
|
#endif
|
|
|
if (io_32bit) {
|
if (io_32bit) {
|
#if SUPPORT_VLB_SYNC
|
#if SUPPORT_VLB_SYNC
|
if (io_32bit & 2) {
|
if (io_32bit & 2) {
|
cli();
|
cli();
|
do_vlb_sync(io_base+IDE_NSECTOR_OFFSET);
|
do_vlb_sync(io_base+IDE_NSECTOR_OFFSET);
|
insl(data_reg, buffer, wcount);
|
insl(data_reg, buffer, wcount);
|
if (drive->unmask)
|
if (drive->unmask)
|
sti();
|
sti();
|
} else
|
} else
|
#endif /* SUPPORT_VLB_SYNC */
|
#endif /* SUPPORT_VLB_SYNC */
|
insl(data_reg, buffer, wcount);
|
insl(data_reg, buffer, wcount);
|
} else {
|
} else {
|
#if SUPPORT_SLOW_DATA_PORTS
|
#if SUPPORT_SLOW_DATA_PORTS
|
if (drive->slow) {
|
if (drive->slow) {
|
unsigned short *ptr = (unsigned short *) buffer;
|
unsigned short *ptr = (unsigned short *) buffer;
|
while (wcount--) {
|
while (wcount--) {
|
*ptr++ = inw_p(data_reg);
|
*ptr++ = inw_p(data_reg);
|
*ptr++ = inw_p(data_reg);
|
*ptr++ = inw_p(data_reg);
|
}
|
}
|
} else
|
} else
|
#endif /* SUPPORT_SLOW_DATA_PORTS */
|
#endif /* SUPPORT_SLOW_DATA_PORTS */
|
insw(data_reg, buffer, wcount<<1);
|
insw(data_reg, buffer, wcount<<1);
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* This is used for most PIO data transfers *to* the IDE interface
|
* This is used for most PIO data transfers *to* the IDE interface
|
*/
|
*/
|
void ide_output_data (ide_drive_t *drive, void *buffer, unsigned int wcount)
|
void ide_output_data (ide_drive_t *drive, void *buffer, unsigned int wcount)
|
{
|
{
|
unsigned long io_base = HWIF(drive)->io.io_base;
|
unsigned long io_base = HWIF(drive)->io.io_base;
|
unsigned long data_reg = io_base + (IDE_DATA_OFFSET << HWIF(drive)->io.io_shift);
|
unsigned long data_reg = io_base + (IDE_DATA_OFFSET << HWIF(drive)->io.io_shift);
|
#ifndef __arm__
|
#ifndef __arm__
|
byte io_32bit = drive->io_32bit;
|
byte io_32bit = drive->io_32bit;
|
#else
|
#else
|
byte io_32bit = 0;
|
byte io_32bit = 0;
|
#endif
|
#endif
|
|
|
if (io_32bit) {
|
if (io_32bit) {
|
#if SUPPORT_VLB_SYNC
|
#if SUPPORT_VLB_SYNC
|
if (io_32bit & 2) {
|
if (io_32bit & 2) {
|
cli();
|
cli();
|
do_vlb_sync(io_base+IDE_NSECTOR_OFFSET);
|
do_vlb_sync(io_base+IDE_NSECTOR_OFFSET);
|
outsl(data_reg, buffer, wcount);
|
outsl(data_reg, buffer, wcount);
|
if (drive->unmask)
|
if (drive->unmask)
|
sti();
|
sti();
|
} else
|
} else
|
#endif /* SUPPORT_VLB_SYNC */
|
#endif /* SUPPORT_VLB_SYNC */
|
outsl(data_reg, buffer, wcount);
|
outsl(data_reg, buffer, wcount);
|
} else {
|
} else {
|
#if SUPPORT_SLOW_DATA_PORTS
|
#if SUPPORT_SLOW_DATA_PORTS
|
if (drive->slow) {
|
if (drive->slow) {
|
unsigned short *ptr = (unsigned short *) buffer;
|
unsigned short *ptr = (unsigned short *) buffer;
|
while (wcount--) {
|
while (wcount--) {
|
outw_p(*ptr++, data_reg);
|
outw_p(*ptr++, data_reg);
|
outw_p(*ptr++, data_reg);
|
outw_p(*ptr++, data_reg);
|
}
|
}
|
} else
|
} else
|
#endif /* SUPPORT_SLOW_DATA_PORTS */
|
#endif /* SUPPORT_SLOW_DATA_PORTS */
|
outsw(data_reg, buffer, wcount<<1);
|
outsw(data_reg, buffer, wcount<<1);
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* The following routines are mainly used by the ATAPI drivers.
|
* The following routines are mainly used by the ATAPI drivers.
|
*
|
*
|
* These routines will round up any request for an odd number of bytes,
|
* These routines will round up any request for an odd number of bytes,
|
* so if an odd bytecount is specified, be sure that there's at least one
|
* so if an odd bytecount is specified, be sure that there's at least one
|
* extra byte allocated for the buffer.
|
* extra byte allocated for the buffer.
|
*/
|
*/
|
void atapi_input_bytes (ide_drive_t *drive, void *buffer, unsigned int bytecount)
|
void atapi_input_bytes (ide_drive_t *drive, void *buffer, unsigned int bytecount)
|
{
|
{
|
++bytecount;
|
++bytecount;
|
ide_input_data (drive, buffer, bytecount / 4);
|
ide_input_data (drive, buffer, bytecount / 4);
|
if ((bytecount & 0x03) >= 2)
|
if ((bytecount & 0x03) >= 2)
|
insw (IDE_DATA_REG, ((byte *)buffer) + (bytecount & ~0x03), 1);
|
insw (IDE_DATA_REG, ((byte *)buffer) + (bytecount & ~0x03), 1);
|
}
|
}
|
|
|
void atapi_output_bytes (ide_drive_t *drive, void *buffer, unsigned int bytecount)
|
void atapi_output_bytes (ide_drive_t *drive, void *buffer, unsigned int bytecount)
|
{
|
{
|
++bytecount;
|
++bytecount;
|
ide_output_data (drive, buffer, bytecount / 4);
|
ide_output_data (drive, buffer, bytecount / 4);
|
if ((bytecount & 0x03) >= 2)
|
if ((bytecount & 0x03) >= 2)
|
outsw (IDE_DATA_REG, ((byte *)buffer) + (bytecount & ~0x03), 1);
|
outsw (IDE_DATA_REG, ((byte *)buffer) + (bytecount & ~0x03), 1);
|
}
|
}
|
|
|
/*
|
/*
|
* This should get invoked any time we exit the driver to
|
* This should get invoked any time we exit the driver to
|
* wait for an interrupt response from a drive. handler() points
|
* wait for an interrupt response from a drive. handler() points
|
* at the appropriate code to handle the next interrupt, and a
|
* at the appropriate code to handle the next interrupt, and a
|
* timer is started to prevent us from waiting forever in case
|
* timer is started to prevent us from waiting forever in case
|
* something goes wrong (see the timer_expiry() handler later on).
|
* something goes wrong (see the timer_expiry() handler later on).
|
*/
|
*/
|
void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout)
|
void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigned int timeout)
|
{
|
{
|
ide_hwgroup_t *hwgroup = HWGROUP(drive);
|
ide_hwgroup_t *hwgroup = HWGROUP(drive);
|
#ifdef DEBUG
|
#ifdef DEBUG
|
if (hwgroup->handler != NULL) {
|
if (hwgroup->handler != NULL) {
|
printk("%s: ide_set_handler: handler not null; old=%p, new=%p\n",
|
printk("%s: ide_set_handler: handler not null; old=%p, new=%p\n",
|
drive->name, hwgroup->handler, handler);
|
drive->name, hwgroup->handler, handler);
|
}
|
}
|
#endif
|
#endif
|
hwgroup->handler = handler;
|
hwgroup->handler = handler;
|
hwgroup->timer.expires = jiffies + timeout;
|
hwgroup->timer.expires = jiffies + timeout;
|
add_timer(&(hwgroup->timer));
|
add_timer(&(hwgroup->timer));
|
}
|
}
|
|
|
/*
|
/*
|
* lba_capacity_is_ok() performs a sanity check on the claimed "lba_capacity"
|
* lba_capacity_is_ok() performs a sanity check on the claimed "lba_capacity"
|
* value for this drive (from its reported identification information).
|
* value for this drive (from its reported identification information).
|
*
|
*
|
* Returns: 1 if lba_capacity looks sensible
|
* Returns: 1 if lba_capacity looks sensible
|
* 0 otherwise
|
* 0 otherwise
|
*/
|
*/
|
static int lba_capacity_is_ok (struct hd_driveid *id)
|
static int lba_capacity_is_ok (struct hd_driveid *id)
|
{
|
{
|
unsigned long lba_sects = id->lba_capacity;
|
unsigned long lba_sects = id->lba_capacity;
|
unsigned long chs_sects = id->cyls * id->heads * id->sectors;
|
unsigned long chs_sects = id->cyls * id->heads * id->sectors;
|
unsigned long _10_percent = chs_sects / 10;
|
unsigned long _10_percent = chs_sects / 10;
|
|
|
/* very large drives (8GB+) may lie about the number of cylinders */
|
/* very large drives (8GB+) may lie about the number of cylinders */
|
if (id->cyls == 16383 && id->heads == 16 && id->sectors == 63 && lba_sects > chs_sects) {
|
if (id->cyls == 16383 && id->heads == 16 && id->sectors == 63 && lba_sects > chs_sects) {
|
id->cyls = lba_sects / (16 * 63); /* correct cyls */
|
id->cyls = lba_sects / (16 * 63); /* correct cyls */
|
return 1; /* lba_capacity is our only option */
|
return 1; /* lba_capacity is our only option */
|
}
|
}
|
/* perform a rough sanity check on lba_sects: within 10% is "okay" */
|
/* perform a rough sanity check on lba_sects: within 10% is "okay" */
|
if ((lba_sects - chs_sects) < _10_percent)
|
if ((lba_sects - chs_sects) < _10_percent)
|
return 1; /* lba_capacity is good */
|
return 1; /* lba_capacity is good */
|
|
|
/* some drives have the word order reversed */
|
/* some drives have the word order reversed */
|
lba_sects = (lba_sects << 16) | (lba_sects >> 16);
|
lba_sects = (lba_sects << 16) | (lba_sects >> 16);
|
if ((lba_sects - chs_sects) < _10_percent) {
|
if ((lba_sects - chs_sects) < _10_percent) {
|
id->lba_capacity = lba_sects; /* fix it */
|
id->lba_capacity = lba_sects; /* fix it */
|
return 1; /* lba_capacity is (now) good */
|
return 1; /* lba_capacity is (now) good */
|
}
|
}
|
return 0; /* lba_capacity value is bad */
|
return 0; /* lba_capacity value is bad */
|
}
|
}
|
|
|
/*
|
/*
|
* current_capacity() returns the capacity (in sectors) of a drive
|
* current_capacity() returns the capacity (in sectors) of a drive
|
* according to its current geometry/LBA settings.
|
* according to its current geometry/LBA settings.
|
*/
|
*/
|
static unsigned long current_capacity (ide_drive_t *drive)
|
static unsigned long current_capacity (ide_drive_t *drive)
|
{
|
{
|
struct hd_driveid *id = drive->id;
|
struct hd_driveid *id = drive->id;
|
unsigned long capacity = drive->cyl * drive->head * drive->sect;
|
unsigned long capacity = drive->cyl * drive->head * drive->sect;
|
|
|
if (!drive->present)
|
if (!drive->present)
|
return 0;
|
return 0;
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
if (drive->media == ide_floppy)
|
if (drive->media == ide_floppy)
|
return idefloppy_capacity(drive);
|
return idefloppy_capacity(drive);
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
if (drive->media != ide_disk)
|
if (drive->media != ide_disk)
|
return 0x7fffffff; /* cdrom or tape */
|
return 0x7fffffff; /* cdrom or tape */
|
drive->select.b.lba = 0;
|
drive->select.b.lba = 0;
|
/* Determine capacity, and use LBA if the drive properly supports it */
|
/* Determine capacity, and use LBA if the drive properly supports it */
|
if (id != NULL && (id->capability & 2) && lba_capacity_is_ok(id)) {
|
if (id != NULL && (id->capability & 2) && lba_capacity_is_ok(id)) {
|
if (id->lba_capacity >= capacity) {
|
if (id->lba_capacity >= capacity) {
|
drive->cyl = id->lba_capacity / (drive->head * drive->sect);
|
drive->cyl = id->lba_capacity / (drive->head * drive->sect);
|
capacity = id->lba_capacity;
|
capacity = id->lba_capacity;
|
drive->select.b.lba = 1;
|
drive->select.b.lba = 1;
|
}
|
}
|
}
|
}
|
return (capacity - drive->sect0);
|
return (capacity - drive->sect0);
|
}
|
}
|
|
|
/*
|
/*
|
* ide_geninit() is called exactly *once* for each major, from genhd.c,
|
* ide_geninit() is called exactly *once* for each major, from genhd.c,
|
* at the beginning of the initial partition check for the drives.
|
* at the beginning of the initial partition check for the drives.
|
*/
|
*/
|
static void ide_geninit (struct gendisk *gd)
|
static void ide_geninit (struct gendisk *gd)
|
{
|
{
|
unsigned int unit;
|
unsigned int unit;
|
ide_hwif_t *hwif = gd->real_devices;
|
ide_hwif_t *hwif = gd->real_devices;
|
|
|
for (unit = 0; unit < gd->nr_real; ++unit) {
|
for (unit = 0; unit < gd->nr_real; ++unit) {
|
ide_drive_t *drive = &hwif->drives[unit];
|
ide_drive_t *drive = &hwif->drives[unit];
|
#ifdef CONFIG_BLK_DEV_IDECD
|
#ifdef CONFIG_BLK_DEV_IDECD
|
if (drive->present && drive->media == ide_cdrom)
|
if (drive->present && drive->media == ide_cdrom)
|
ide_cdrom_setup(drive);
|
ide_cdrom_setup(drive);
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
if (drive->present && drive->media == ide_tape)
|
if (drive->present && drive->media == ide_tape)
|
idetape_setup(drive);
|
idetape_setup(drive);
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
if (drive->present && drive->media == ide_floppy)
|
if (drive->present && drive->media == ide_floppy)
|
idefloppy_setup(drive);
|
idefloppy_setup(drive);
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
drive->part[0].nr_sects = current_capacity(drive);
|
drive->part[0].nr_sects = current_capacity(drive);
|
if (!drive->present || (drive->media != ide_disk && drive->media != ide_floppy) ||
|
if (!drive->present || (drive->media != ide_disk && drive->media != ide_floppy) ||
|
!drive->part[0].nr_sects) {
|
!drive->part[0].nr_sects) {
|
drive->part[0].start_sect = -1; /* skip partition check */
|
drive->part[0].start_sect = -1; /* skip partition check */
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* init_gendisk() (as opposed to ide_geninit) is called for each major device,
|
* init_gendisk() (as opposed to ide_geninit) is called for each major device,
|
* after probing for drives, to allocate partition tables and other data
|
* after probing for drives, to allocate partition tables and other data
|
* structures needed for the routines in genhd.c. ide_geninit() gets called
|
* structures needed for the routines in genhd.c. ide_geninit() gets called
|
* somewhat later, during the partition check.
|
* somewhat later, during the partition check.
|
*/
|
*/
|
static void init_gendisk (ide_hwif_t *hwif)
|
static void init_gendisk (ide_hwif_t *hwif)
|
{
|
{
|
struct gendisk *gd, **gdp;
|
struct gendisk *gd, **gdp;
|
unsigned int unit, units, minors;
|
unsigned int unit, units, minors;
|
int *bs;
|
int *bs;
|
|
|
/* figure out maximum drive number on the interface */
|
/* figure out maximum drive number on the interface */
|
for (units = MAX_DRIVES; units > 0; --units) {
|
for (units = MAX_DRIVES; units > 0; --units) {
|
if (hwif->drives[units-1].present)
|
if (hwif->drives[units-1].present)
|
break;
|
break;
|
}
|
}
|
minors = units * (1<<PARTN_BITS);
|
minors = units * (1<<PARTN_BITS);
|
gd = kmalloc (sizeof(struct gendisk), GFP_KERNEL);
|
gd = kmalloc (sizeof(struct gendisk), GFP_KERNEL);
|
gd->sizes = kmalloc (minors * sizeof(int), GFP_KERNEL);
|
gd->sizes = kmalloc (minors * sizeof(int), GFP_KERNEL);
|
gd->part = kmalloc (minors * sizeof(struct hd_struct), GFP_KERNEL);
|
gd->part = kmalloc (minors * sizeof(struct hd_struct), GFP_KERNEL);
|
bs = kmalloc (minors*sizeof(int), GFP_KERNEL);
|
bs = kmalloc (minors*sizeof(int), GFP_KERNEL);
|
|
|
memset(gd->part, 0, minors * sizeof(struct hd_struct));
|
memset(gd->part, 0, minors * sizeof(struct hd_struct));
|
|
|
/* cdroms and msdos f/s are examples of non-1024 blocksizes */
|
/* cdroms and msdos f/s are examples of non-1024 blocksizes */
|
blksize_size[hwif->major] = bs;
|
blksize_size[hwif->major] = bs;
|
for (unit = 0; unit < minors; ++unit)
|
for (unit = 0; unit < minors; ++unit)
|
*bs++ = BLOCK_SIZE;
|
*bs++ = BLOCK_SIZE;
|
|
|
for (unit = 0; unit < units; ++unit)
|
for (unit = 0; unit < units; ++unit)
|
hwif->drives[unit].part = &gd->part[unit << PARTN_BITS];
|
hwif->drives[unit].part = &gd->part[unit << PARTN_BITS];
|
|
|
gd->major = hwif->major; /* our major device number */
|
gd->major = hwif->major; /* our major device number */
|
gd->major_name = IDE_MAJOR_NAME; /* treated special in genhd.c */
|
gd->major_name = IDE_MAJOR_NAME; /* treated special in genhd.c */
|
gd->minor_shift = PARTN_BITS; /* num bits for partitions */
|
gd->minor_shift = PARTN_BITS; /* num bits for partitions */
|
gd->max_p = 1<<PARTN_BITS; /* 1 + max partitions / drive */
|
gd->max_p = 1<<PARTN_BITS; /* 1 + max partitions / drive */
|
gd->max_nr = units; /* max num real drives */
|
gd->max_nr = units; /* max num real drives */
|
gd->nr_real = units; /* current num real drives */
|
gd->nr_real = units; /* current num real drives */
|
gd->init = ide_geninit; /* initialization function */
|
gd->init = ide_geninit; /* initialization function */
|
gd->real_devices= hwif; /* ptr to internal data */
|
gd->real_devices= hwif; /* ptr to internal data */
|
gd->next = NULL; /* linked list of major devs */
|
gd->next = NULL; /* linked list of major devs */
|
|
|
for (gdp = &gendisk_head; *gdp; gdp = &((*gdp)->next)) ;
|
for (gdp = &gendisk_head; *gdp; gdp = &((*gdp)->next)) ;
|
hwif->gd = *gdp = gd; /* link onto tail of list */
|
hwif->gd = *gdp = gd; /* link onto tail of list */
|
}
|
}
|
|
|
static void do_reset1 (ide_drive_t *, int); /* needed below */
|
static void do_reset1 (ide_drive_t *, int); /* needed below */
|
|
|
#ifdef CONFIG_BLK_DEV_IDEATAPI
|
#ifdef CONFIG_BLK_DEV_IDEATAPI
|
/*
|
/*
|
* atapi_reset_pollfunc() gets invoked to poll the interface for completion every 50ms
|
* atapi_reset_pollfunc() gets invoked to poll the interface for completion every 50ms
|
* during an atapi drive reset operation. If the drive has not yet responded,
|
* during an atapi drive reset operation. If the drive has not yet responded,
|
* and we have not yet hit our maximum waiting time, then the timer is restarted
|
* and we have not yet hit our maximum waiting time, then the timer is restarted
|
* for another 50ms.
|
* for another 50ms.
|
*/
|
*/
|
static void atapi_reset_pollfunc (ide_drive_t *drive)
|
static void atapi_reset_pollfunc (ide_drive_t *drive)
|
{
|
{
|
ide_hwgroup_t *hwgroup = HWGROUP(drive);
|
ide_hwgroup_t *hwgroup = HWGROUP(drive);
|
byte stat;
|
byte stat;
|
|
|
OUT_BYTE (drive->select.all, IDE_SELECT_REG);
|
OUT_BYTE (drive->select.all, IDE_SELECT_REG);
|
udelay (10);
|
udelay (10);
|
|
|
if (OK_STAT(stat=GET_STAT(), 0, BUSY_STAT)) {
|
if (OK_STAT(stat=GET_STAT(), 0, BUSY_STAT)) {
|
printk("%s: ATAPI reset complete\n", drive->name);
|
printk("%s: ATAPI reset complete\n", drive->name);
|
} else {
|
} else {
|
if (jiffies < hwgroup->poll_timeout) {
|
if (jiffies < hwgroup->poll_timeout) {
|
ide_set_handler (drive, &atapi_reset_pollfunc, HZ/20);
|
ide_set_handler (drive, &atapi_reset_pollfunc, HZ/20);
|
return; /* continue polling */
|
return; /* continue polling */
|
}
|
}
|
hwgroup->poll_timeout = 0; /* end of polling */
|
hwgroup->poll_timeout = 0; /* end of polling */
|
printk("%s: ATAPI reset timed-out, status=0x%02x\n", drive->name, stat);
|
printk("%s: ATAPI reset timed-out, status=0x%02x\n", drive->name, stat);
|
do_reset1 (drive, 1); /* do it the old fashioned way */
|
do_reset1 (drive, 1); /* do it the old fashioned way */
|
return;
|
return;
|
}
|
}
|
hwgroup->poll_timeout = 0; /* done polling */
|
hwgroup->poll_timeout = 0; /* done polling */
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_IDEATAPI */
|
#endif /* CONFIG_BLK_DEV_IDEATAPI */
|
|
|
/*
|
/*
|
* reset_pollfunc() gets invoked to poll the interface for completion every 50ms
|
* reset_pollfunc() gets invoked to poll the interface for completion every 50ms
|
* during an ide reset operation. If the drives have not yet responded,
|
* during an ide reset operation. If the drives have not yet responded,
|
* and we have not yet hit our maximum waiting time, then the timer is restarted
|
* and we have not yet hit our maximum waiting time, then the timer is restarted
|
* for another 50ms.
|
* for another 50ms.
|
*/
|
*/
|
static void reset_pollfunc (ide_drive_t *drive)
|
static void reset_pollfunc (ide_drive_t *drive)
|
{
|
{
|
ide_hwgroup_t *hwgroup = HWGROUP(drive);
|
ide_hwgroup_t *hwgroup = HWGROUP(drive);
|
ide_hwif_t *hwif = HWIF(drive);
|
ide_hwif_t *hwif = HWIF(drive);
|
byte tmp;
|
byte tmp;
|
|
|
if (!OK_STAT(tmp=GET_STAT(), 0, BUSY_STAT)) {
|
if (!OK_STAT(tmp=GET_STAT(), 0, BUSY_STAT)) {
|
if (jiffies < hwgroup->poll_timeout) {
|
if (jiffies < hwgroup->poll_timeout) {
|
ide_set_handler (drive, &reset_pollfunc, HZ/20);
|
ide_set_handler (drive, &reset_pollfunc, HZ/20);
|
return; /* continue polling */
|
return; /* continue polling */
|
}
|
}
|
printk("%s: reset timed-out, status=0x%02x\n", hwif->name, tmp);
|
printk("%s: reset timed-out, status=0x%02x\n", hwif->name, tmp);
|
} else {
|
} else {
|
printk("%s: reset: ", hwif->name);
|
printk("%s: reset: ", hwif->name);
|
if ((tmp = GET_ERR()) == 1)
|
if ((tmp = GET_ERR()) == 1)
|
printk("success\n");
|
printk("success\n");
|
else {
|
else {
|
#if FANCY_STATUS_DUMPS
|
#if FANCY_STATUS_DUMPS
|
printk("master: ");
|
printk("master: ");
|
switch (tmp & 0x7f) {
|
switch (tmp & 0x7f) {
|
case 1: printk("passed");
|
case 1: printk("passed");
|
break;
|
break;
|
case 2: printk("formatter device error");
|
case 2: printk("formatter device error");
|
break;
|
break;
|
case 3: printk("sector buffer error");
|
case 3: printk("sector buffer error");
|
break;
|
break;
|
case 4: printk("ECC circuitry error");
|
case 4: printk("ECC circuitry error");
|
break;
|
break;
|
case 5: printk("controlling MPU error");
|
case 5: printk("controlling MPU error");
|
break;
|
break;
|
default:printk("error (0x%02x?)", tmp);
|
default:printk("error (0x%02x?)", tmp);
|
}
|
}
|
if (tmp & 0x80)
|
if (tmp & 0x80)
|
printk("; slave: failed");
|
printk("; slave: failed");
|
printk("\n");
|
printk("\n");
|
#else
|
#else
|
printk("failed\n");
|
printk("failed\n");
|
#endif /* FANCY_STATUS_DUMPS */
|
#endif /* FANCY_STATUS_DUMPS */
|
}
|
}
|
}
|
}
|
hwgroup->poll_timeout = 0; /* done polling */
|
hwgroup->poll_timeout = 0; /* done polling */
|
}
|
}
|
|
|
/*
|
/*
|
* do_reset1() attempts to recover a confused drive by resetting it.
|
* do_reset1() attempts to recover a confused drive by resetting it.
|
* Unfortunately, resetting a disk drive actually resets all devices on
|
* Unfortunately, resetting a disk drive actually resets all devices on
|
* the same interface, so it can really be thought of as resetting the
|
* the same interface, so it can really be thought of as resetting the
|
* interface rather than resetting the drive.
|
* interface rather than resetting the drive.
|
*
|
*
|
* ATAPI devices have their own reset mechanism which allows them to be
|
* ATAPI devices have their own reset mechanism which allows them to be
|
* individually reset without clobbering other devices on the same interface.
|
* individually reset without clobbering other devices on the same interface.
|
*
|
*
|
* Unfortunately, the IDE interface does not generate an interrupt to let
|
* Unfortunately, the IDE interface does not generate an interrupt to let
|
* us know when the reset operation has finished, so we must poll for this.
|
* us know when the reset operation has finished, so we must poll for this.
|
* Equally poor, though, is the fact that this may a very long time to complete,
|
* Equally poor, though, is the fact that this may a very long time to complete,
|
* (up to 30 seconds worstcase). So, instead of busy-waiting here for it,
|
* (up to 30 seconds worstcase). So, instead of busy-waiting here for it,
|
* we set a timer to poll at 50ms intervals.
|
* we set a timer to poll at 50ms intervals.
|
*/
|
*/
|
static void do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
|
static void do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
|
{
|
{
|
unsigned int unit;
|
unsigned int unit;
|
unsigned long flags;
|
unsigned long flags;
|
ide_hwif_t *hwif = HWIF(drive);
|
ide_hwif_t *hwif = HWIF(drive);
|
ide_hwgroup_t *hwgroup = HWGROUP(drive);
|
ide_hwgroup_t *hwgroup = HWGROUP(drive);
|
|
|
save_flags(flags);
|
save_flags(flags);
|
cli(); /* Why ? */
|
cli(); /* Why ? */
|
|
|
#ifdef CONFIG_BLK_DEV_IDEATAPI
|
#ifdef CONFIG_BLK_DEV_IDEATAPI
|
/* For an ATAPI device, first try an ATAPI SRST. */
|
/* For an ATAPI device, first try an ATAPI SRST. */
|
if (drive->media != ide_disk) {
|
if (drive->media != ide_disk) {
|
if (!do_not_try_atapi) {
|
if (!do_not_try_atapi) {
|
if (!drive->keep_settings) {
|
if (!drive->keep_settings) {
|
drive->unmask = 0;
|
drive->unmask = 0;
|
drive->io_32bit = 0;
|
drive->io_32bit = 0;
|
}
|
}
|
OUT_BYTE (drive->select.all, IDE_SELECT_REG);
|
OUT_BYTE (drive->select.all, IDE_SELECT_REG);
|
udelay (20);
|
udelay (20);
|
OUT_BYTE (WIN_SRST, IDE_COMMAND_REG);
|
OUT_BYTE (WIN_SRST, IDE_COMMAND_REG);
|
hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
|
hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
|
ide_set_handler (drive, &atapi_reset_pollfunc, HZ/20);
|
ide_set_handler (drive, &atapi_reset_pollfunc, HZ/20);
|
restore_flags (flags);
|
restore_flags (flags);
|
return;
|
return;
|
}
|
}
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_IDEATAPI */
|
#endif /* CONFIG_BLK_DEV_IDEATAPI */
|
|
|
/*
|
/*
|
* First, reset any device state data we were maintaining
|
* First, reset any device state data we were maintaining
|
* for any of the drives on this interface.
|
* for any of the drives on this interface.
|
*/
|
*/
|
for (unit = 0; unit < MAX_DRIVES; ++unit) {
|
for (unit = 0; unit < MAX_DRIVES; ++unit) {
|
ide_drive_t *rdrive = &hwif->drives[unit];
|
ide_drive_t *rdrive = &hwif->drives[unit];
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
if (rdrive->media == ide_tape)
|
if (rdrive->media == ide_tape)
|
rdrive->tape.reset_issued = 1;
|
rdrive->tape.reset_issued = 1;
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
rdrive->special.all = 0;
|
rdrive->special.all = 0;
|
rdrive->special.b.set_geometry = 1;
|
rdrive->special.b.set_geometry = 1;
|
rdrive->special.b.recalibrate = 1;
|
rdrive->special.b.recalibrate = 1;
|
if (OK_TO_RESET_CONTROLLER)
|
if (OK_TO_RESET_CONTROLLER)
|
rdrive->mult_count = 0;
|
rdrive->mult_count = 0;
|
if (!rdrive->keep_settings) {
|
if (!rdrive->keep_settings) {
|
rdrive->mult_req = 0;
|
rdrive->mult_req = 0;
|
rdrive->unmask = 0;
|
rdrive->unmask = 0;
|
rdrive->io_32bit = 0;
|
rdrive->io_32bit = 0;
|
if (rdrive->using_dma) {
|
if (rdrive->using_dma) {
|
rdrive->using_dma = 0;
|
rdrive->using_dma = 0;
|
printk("%s: disabled DMA\n", rdrive->name);
|
printk("%s: disabled DMA\n", rdrive->name);
|
}
|
}
|
}
|
}
|
if (rdrive->mult_req != rdrive->mult_count)
|
if (rdrive->mult_req != rdrive->mult_count)
|
rdrive->special.b.set_multmode = 1;
|
rdrive->special.b.set_multmode = 1;
|
}
|
}
|
|
|
#if OK_TO_RESET_CONTROLLER
|
#if OK_TO_RESET_CONTROLLER
|
/*
|
/*
|
* Note that we also set nIEN while resetting the device,
|
* Note that we also set nIEN while resetting the device,
|
* to mask unwanted interrupts from the interface during the reset.
|
* to mask unwanted interrupts from the interface during the reset.
|
* However, due to the design of PC hardware, this will cause an
|
* However, due to the design of PC hardware, this will cause an
|
* immediate interrupt due to the edge transition it produces.
|
* immediate interrupt due to the edge transition it produces.
|
* This single interrupt gives us a "fast poll" for drives that
|
* This single interrupt gives us a "fast poll" for drives that
|
* recover from reset very quickly, saving us the first 50ms wait time.
|
* recover from reset very quickly, saving us the first 50ms wait time.
|
*/
|
*/
|
OUT_BYTE(drive->ctl|6,IDE_CONTROL_REG); /* set SRST and nIEN */
|
OUT_BYTE(drive->ctl|6,IDE_CONTROL_REG); /* set SRST and nIEN */
|
udelay(10); /* more than enough time */
|
udelay(10); /* more than enough time */
|
OUT_BYTE(drive->ctl|2,IDE_CONTROL_REG); /* clear SRST, leave nIEN */
|
OUT_BYTE(drive->ctl|2,IDE_CONTROL_REG); /* clear SRST, leave nIEN */
|
udelay(10); /* more than enough time */
|
udelay(10); /* more than enough time */
|
hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
|
hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
|
ide_set_handler (drive, &reset_pollfunc, HZ/20);
|
ide_set_handler (drive, &reset_pollfunc, HZ/20);
|
#endif /* OK_TO_RESET_CONTROLLER */
|
#endif /* OK_TO_RESET_CONTROLLER */
|
|
|
restore_flags (flags);
|
restore_flags (flags);
|
}
|
}
|
|
|
/*
|
/*
|
* ide_do_reset() is the entry point to the drive/interface reset code.
|
* ide_do_reset() is the entry point to the drive/interface reset code.
|
*/
|
*/
|
void ide_do_reset (ide_drive_t *drive)
|
void ide_do_reset (ide_drive_t *drive)
|
{
|
{
|
do_reset1 (drive, 0);
|
do_reset1 (drive, 0);
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
if (drive->media == ide_tape)
|
if (drive->media == ide_tape)
|
drive->tape.reset_issued=1;
|
drive->tape.reset_issued=1;
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
}
|
}
|
|
|
/*
|
/*
|
* Clean up after success/failure of an explicit drive cmd
|
* Clean up after success/failure of an explicit drive cmd
|
*/
|
*/
|
void ide_end_drive_cmd (ide_drive_t *drive, byte stat, byte err)
|
void ide_end_drive_cmd (ide_drive_t *drive, byte stat, byte err)
|
{
|
{
|
unsigned long flags;
|
unsigned long flags;
|
struct request *rq = HWGROUP(drive)->rq;
|
struct request *rq = HWGROUP(drive)->rq;
|
|
|
if (rq->cmd == IDE_DRIVE_CMD) {
|
if (rq->cmd == IDE_DRIVE_CMD) {
|
byte *args = (byte *) rq->buffer;
|
byte *args = (byte *) rq->buffer;
|
rq->errors = !OK_STAT(stat,READY_STAT,BAD_STAT);
|
rq->errors = !OK_STAT(stat,READY_STAT,BAD_STAT);
|
if (args) {
|
if (args) {
|
args[0] = stat;
|
args[0] = stat;
|
args[1] = err;
|
args[1] = err;
|
args[2] = IN_BYTE(IDE_NSECTOR_REG);
|
args[2] = IN_BYTE(IDE_NSECTOR_REG);
|
}
|
}
|
}
|
}
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
blk_dev[MAJOR(rq->rq_dev)].current_request = rq->next;
|
blk_dev[MAJOR(rq->rq_dev)].current_request = rq->next;
|
HWGROUP(drive)->rq = NULL;
|
HWGROUP(drive)->rq = NULL;
|
rq->rq_status = RQ_INACTIVE;
|
rq->rq_status = RQ_INACTIVE;
|
if (rq->sem != NULL)
|
if (rq->sem != NULL)
|
up(rq->sem);
|
up(rq->sem);
|
restore_flags(flags);
|
restore_flags(flags);
|
}
|
}
|
|
|
/*
|
/*
|
* Error reporting, in human readable form (luxurious, but a memory hog).
|
* Error reporting, in human readable form (luxurious, but a memory hog).
|
*/
|
*/
|
byte ide_dump_status (ide_drive_t *drive, const char *msg, byte stat)
|
byte ide_dump_status (ide_drive_t *drive, const char *msg, byte stat)
|
{
|
{
|
unsigned long flags;
|
unsigned long flags;
|
byte err = 0;
|
byte err = 0;
|
|
|
save_flags (flags);
|
save_flags (flags);
|
sti();
|
sti();
|
printk("%s: %s: status=0x%02x", drive->name, msg, stat);
|
printk("%s: %s: status=0x%02x", drive->name, msg, stat);
|
#if FANCY_STATUS_DUMPS
|
#if FANCY_STATUS_DUMPS
|
if (drive->media == ide_disk) {
|
if (drive->media == ide_disk) {
|
printk(" { ");
|
printk(" { ");
|
if (stat & BUSY_STAT)
|
if (stat & BUSY_STAT)
|
printk("Busy ");
|
printk("Busy ");
|
else {
|
else {
|
if (stat & READY_STAT) printk("DriveReady ");
|
if (stat & READY_STAT) printk("DriveReady ");
|
if (stat & WRERR_STAT) printk("DeviceFault ");
|
if (stat & WRERR_STAT) printk("DeviceFault ");
|
if (stat & SEEK_STAT) printk("SeekComplete ");
|
if (stat & SEEK_STAT) printk("SeekComplete ");
|
if (stat & DRQ_STAT) printk("DataRequest ");
|
if (stat & DRQ_STAT) printk("DataRequest ");
|
if (stat & ECC_STAT) printk("CorrectedError ");
|
if (stat & ECC_STAT) printk("CorrectedError ");
|
if (stat & INDEX_STAT) printk("Index ");
|
if (stat & INDEX_STAT) printk("Index ");
|
if (stat & ERR_STAT) printk("Error ");
|
if (stat & ERR_STAT) printk("Error ");
|
}
|
}
|
printk("}");
|
printk("}");
|
}
|
}
|
#endif /* FANCY_STATUS_DUMPS */
|
#endif /* FANCY_STATUS_DUMPS */
|
printk("\n");
|
printk("\n");
|
if ((stat & (BUSY_STAT|ERR_STAT)) == ERR_STAT) {
|
if ((stat & (BUSY_STAT|ERR_STAT)) == ERR_STAT) {
|
err = GET_ERR();
|
err = GET_ERR();
|
printk("%s: %s: error=0x%02x", drive->name, msg, err);
|
printk("%s: %s: error=0x%02x", drive->name, msg, err);
|
#if FANCY_STATUS_DUMPS
|
#if FANCY_STATUS_DUMPS
|
if (drive->media == ide_disk) {
|
if (drive->media == ide_disk) {
|
printk(" { ");
|
printk(" { ");
|
if (err & BBD_ERR) printk("BadSector ");
|
if (err & BBD_ERR) printk("BadSector ");
|
if (err & ECC_ERR) printk("UncorrectableError ");
|
if (err & ECC_ERR) printk("UncorrectableError ");
|
if (err & ID_ERR) printk("SectorIdNotFound ");
|
if (err & ID_ERR) printk("SectorIdNotFound ");
|
if (err & ABRT_ERR) printk("DriveStatusError ");
|
if (err & ABRT_ERR) printk("DriveStatusError ");
|
if (err & TRK0_ERR) printk("TrackZeroNotFound ");
|
if (err & TRK0_ERR) printk("TrackZeroNotFound ");
|
if (err & MARK_ERR) printk("AddrMarkNotFound ");
|
if (err & MARK_ERR) printk("AddrMarkNotFound ");
|
printk("}");
|
printk("}");
|
if (err & (BBD_ERR|ECC_ERR|ID_ERR|MARK_ERR)) {
|
if (err & (BBD_ERR|ECC_ERR|ID_ERR|MARK_ERR)) {
|
byte cur = IN_BYTE(IDE_SELECT_REG);
|
byte cur = IN_BYTE(IDE_SELECT_REG);
|
if (cur & 0x40) { /* using LBA? */
|
if (cur & 0x40) { /* using LBA? */
|
printk(", LBAsect=%ld", (unsigned long)
|
printk(", LBAsect=%ld", (unsigned long)
|
((cur&0xf)<<24)
|
((cur&0xf)<<24)
|
|(IN_BYTE(IDE_HCYL_REG)<<16)
|
|(IN_BYTE(IDE_HCYL_REG)<<16)
|
|(IN_BYTE(IDE_LCYL_REG)<<8)
|
|(IN_BYTE(IDE_LCYL_REG)<<8)
|
| IN_BYTE(IDE_SECTOR_REG));
|
| IN_BYTE(IDE_SECTOR_REG));
|
} else {
|
} else {
|
printk(", CHS=%d/%d/%d",
|
printk(", CHS=%d/%d/%d",
|
(IN_BYTE(IDE_HCYL_REG)<<8) +
|
(IN_BYTE(IDE_HCYL_REG)<<8) +
|
IN_BYTE(IDE_LCYL_REG),
|
IN_BYTE(IDE_LCYL_REG),
|
cur & 0xf,
|
cur & 0xf,
|
IN_BYTE(IDE_SECTOR_REG));
|
IN_BYTE(IDE_SECTOR_REG));
|
}
|
}
|
if (HWGROUP(drive)->rq)
|
if (HWGROUP(drive)->rq)
|
printk(", sector=%ld", HWGROUP(drive)->rq->sector);
|
printk(", sector=%ld", HWGROUP(drive)->rq->sector);
|
}
|
}
|
}
|
}
|
#endif /* FANCY_STATUS_DUMPS */
|
#endif /* FANCY_STATUS_DUMPS */
|
printk("\n");
|
printk("\n");
|
}
|
}
|
restore_flags (flags);
|
restore_flags (flags);
|
return err;
|
return err;
|
}
|
}
|
|
|
/*
|
/*
|
* try_to_flush_leftover_data() is invoked in response to a drive
|
* try_to_flush_leftover_data() is invoked in response to a drive
|
* unexpectedly having its DRQ_STAT bit set. As an alternative to
|
* unexpectedly having its DRQ_STAT bit set. As an alternative to
|
* resetting the drive, this routine tries to clear the condition
|
* resetting the drive, this routine tries to clear the condition
|
* by read a sector's worth of data from the drive. Of course,
|
* by read a sector's worth of data from the drive. Of course,
|
* this may not help if the drive is *waiting* for data from *us*.
|
* this may not help if the drive is *waiting* for data from *us*.
|
*/
|
*/
|
static void try_to_flush_leftover_data (ide_drive_t *drive)
|
static void try_to_flush_leftover_data (ide_drive_t *drive)
|
{
|
{
|
int i = (drive->mult_count ? drive->mult_count : 1) * SECTOR_WORDS;
|
int i = (drive->mult_count ? drive->mult_count : 1) * SECTOR_WORDS;
|
|
|
while (i > 0) {
|
while (i > 0) {
|
unsigned long buffer[16];
|
unsigned long buffer[16];
|
unsigned int wcount = (i > 16) ? 16 : i;
|
unsigned int wcount = (i > 16) ? 16 : i;
|
i -= wcount;
|
i -= wcount;
|
ide_input_data (drive, buffer, wcount);
|
ide_input_data (drive, buffer, wcount);
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* ide_error() takes action based on the error returned by the controller.
|
* ide_error() takes action based on the error returned by the controller.
|
*/
|
*/
|
void ide_error (ide_drive_t *drive, const char *msg, byte stat)
|
void ide_error (ide_drive_t *drive, const char *msg, byte stat)
|
{
|
{
|
struct request *rq;
|
struct request *rq;
|
byte err;
|
byte err;
|
|
|
err = ide_dump_status(drive, msg, stat);
|
err = ide_dump_status(drive, msg, stat);
|
if ((rq = HWGROUP(drive)->rq) == NULL || drive == NULL)
|
if ((rq = HWGROUP(drive)->rq) == NULL || drive == NULL)
|
return;
|
return;
|
/* retry only "normal" I/O: */
|
/* retry only "normal" I/O: */
|
if (rq->cmd == IDE_DRIVE_CMD) {
|
if (rq->cmd == IDE_DRIVE_CMD) {
|
rq->errors = 1;
|
rq->errors = 1;
|
ide_end_drive_cmd(drive, stat, err);
|
ide_end_drive_cmd(drive, stat, err);
|
return;
|
return;
|
}
|
}
|
if (stat & BUSY_STAT) { /* other bits are useless when BUSY */
|
if (stat & BUSY_STAT) { /* other bits are useless when BUSY */
|
rq->errors |= ERROR_RESET;
|
rq->errors |= ERROR_RESET;
|
} else {
|
} else {
|
if (drive->media == ide_disk && (stat & ERR_STAT)) {
|
if (drive->media == ide_disk && (stat & ERR_STAT)) {
|
/* err has different meaning on cdrom and tape */
|
/* err has different meaning on cdrom and tape */
|
if (err == ABRT_ERR) {
|
if (err == ABRT_ERR) {
|
if (drive->select.b.lba && IN_BYTE(IDE_COMMAND_REG) == WIN_SPECIFY)
|
if (drive->select.b.lba && IN_BYTE(IDE_COMMAND_REG) == WIN_SPECIFY)
|
return; /* some newer drives don't support WIN_SPECIFY */
|
return; /* some newer drives don't support WIN_SPECIFY */
|
} else if ((err & (ABRT_ERR | ICRC_ERR)) == (ABRT_ERR | ICRC_ERR))
|
} else if ((err & (ABRT_ERR | ICRC_ERR)) == (ABRT_ERR | ICRC_ERR))
|
; /* UDMA crc error -- just retry the operation */
|
; /* UDMA crc error -- just retry the operation */
|
else if (err & (BBD_ERR | ECC_ERR)) /* retries won't help these */
|
else if (err & (BBD_ERR | ECC_ERR)) /* retries won't help these */
|
rq->errors = ERROR_MAX;
|
rq->errors = ERROR_MAX;
|
else if (err & TRK0_ERR) /* help it find track zero */
|
else if (err & TRK0_ERR) /* help it find track zero */
|
rq->errors |= ERROR_RECAL;
|
rq->errors |= ERROR_RECAL;
|
else if (err & MC_ERR)
|
else if (err & MC_ERR)
|
drive->special.b.mc = 1;
|
drive->special.b.mc = 1;
|
}
|
}
|
if ((stat & DRQ_STAT) && rq->cmd != WRITE)
|
if ((stat & DRQ_STAT) && rq->cmd != WRITE)
|
try_to_flush_leftover_data(drive);
|
try_to_flush_leftover_data(drive);
|
}
|
}
|
if (GET_STAT() & (BUSY_STAT|DRQ_STAT))
|
if (GET_STAT() & (BUSY_STAT|DRQ_STAT))
|
rq->errors |= ERROR_RESET; /* Mmmm.. timing problem */
|
rq->errors |= ERROR_RESET; /* Mmmm.. timing problem */
|
|
|
if (rq->errors >= ERROR_MAX) {
|
if (rq->errors >= ERROR_MAX) {
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
if (drive->media == ide_tape) {
|
if (drive->media == ide_tape) {
|
rq->errors = 0;
|
rq->errors = 0;
|
idetape_end_request(0, HWGROUP(drive));
|
idetape_end_request(0, HWGROUP(drive));
|
} else
|
} else
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
if (drive->media == ide_floppy) {
|
if (drive->media == ide_floppy) {
|
rq->errors = 0;
|
rq->errors = 0;
|
idefloppy_end_request(0, HWGROUP(drive));
|
idefloppy_end_request(0, HWGROUP(drive));
|
} else
|
} else
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
#ifdef CONFIG_BLK_DEV_IDESCSI
|
#ifdef CONFIG_BLK_DEV_IDESCSI
|
if (drive->media == ide_scsi) {
|
if (drive->media == ide_scsi) {
|
rq->errors = 0;
|
rq->errors = 0;
|
idescsi_end_request(0, HWGROUP(drive));
|
idescsi_end_request(0, HWGROUP(drive));
|
} else
|
} else
|
#endif /* CONFIG_BLK_DEV_IDESCSI */
|
#endif /* CONFIG_BLK_DEV_IDESCSI */
|
ide_end_request(0, HWGROUP(drive));
|
ide_end_request(0, HWGROUP(drive));
|
}
|
}
|
else {
|
else {
|
if ((rq->errors & ERROR_RESET) == ERROR_RESET) {
|
if ((rq->errors & ERROR_RESET) == ERROR_RESET) {
|
++rq->errors;
|
++rq->errors;
|
ide_do_reset(drive);
|
ide_do_reset(drive);
|
return;
|
return;
|
} else if ((rq->errors & ERROR_RECAL) == ERROR_RECAL)
|
} else if ((rq->errors & ERROR_RECAL) == ERROR_RECAL)
|
drive->special.b.recalibrate = 1;
|
drive->special.b.recalibrate = 1;
|
++rq->errors;
|
++rq->errors;
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* read_intr() is the handler for disk read/multread interrupts
|
* read_intr() is the handler for disk read/multread interrupts
|
*/
|
*/
|
static void read_intr (ide_drive_t *drive)
|
static void read_intr (ide_drive_t *drive)
|
{
|
{
|
byte stat;
|
byte stat;
|
int i;
|
int i;
|
unsigned int msect, nsect;
|
unsigned int msect, nsect;
|
struct request *rq;
|
struct request *rq;
|
|
|
if (!OK_STAT(stat=GET_STAT(),DATA_READY,BAD_R_STAT)) {
|
if (!OK_STAT(stat=GET_STAT(),DATA_READY,BAD_R_STAT)) {
|
ide_error(drive, "read_intr", stat);
|
ide_error(drive, "read_intr", stat);
|
return;
|
return;
|
}
|
}
|
msect = drive->mult_count;
|
msect = drive->mult_count;
|
read_next:
|
read_next:
|
rq = HWGROUP(drive)->rq;
|
rq = HWGROUP(drive)->rq;
|
if (msect) {
|
if (msect) {
|
if ((nsect = rq->current_nr_sectors) > msect)
|
if ((nsect = rq->current_nr_sectors) > msect)
|
nsect = msect;
|
nsect = msect;
|
msect -= nsect;
|
msect -= nsect;
|
} else
|
} else
|
nsect = 1;
|
nsect = 1;
|
ide_input_data(drive, rq->buffer, nsect * SECTOR_WORDS);
|
ide_input_data(drive, rq->buffer, nsect * SECTOR_WORDS);
|
#ifdef DEBUG
|
#ifdef DEBUG
|
printk("%s: read: sectors(%ld-%ld), buffer=0x%08lx, remaining=%ld\n",
|
printk("%s: read: sectors(%ld-%ld), buffer=0x%08lx, remaining=%ld\n",
|
drive->name, rq->sector, rq->sector+nsect-1,
|
drive->name, rq->sector, rq->sector+nsect-1,
|
(unsigned long) rq->buffer+(nsect<<9), rq->nr_sectors-nsect);
|
(unsigned long) rq->buffer+(nsect<<9), rq->nr_sectors-nsect);
|
#endif
|
#endif
|
rq->sector += nsect;
|
rq->sector += nsect;
|
rq->buffer += nsect<<9;
|
rq->buffer += nsect<<9;
|
rq->errors = 0;
|
rq->errors = 0;
|
i = (rq->nr_sectors -= nsect);
|
i = (rq->nr_sectors -= nsect);
|
if ((rq->current_nr_sectors -= nsect) <= 0)
|
if ((rq->current_nr_sectors -= nsect) <= 0)
|
ide_end_request(1, HWGROUP(drive));
|
ide_end_request(1, HWGROUP(drive));
|
if (i > 0) {
|
if (i > 0) {
|
if (msect)
|
if (msect)
|
goto read_next;
|
goto read_next;
|
ide_set_handler (drive, &read_intr, WAIT_CMD);
|
ide_set_handler (drive, &read_intr, WAIT_CMD);
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* write_intr() is the handler for disk write interrupts
|
* write_intr() is the handler for disk write interrupts
|
*/
|
*/
|
static void write_intr (ide_drive_t *drive)
|
static void write_intr (ide_drive_t *drive)
|
{
|
{
|
byte stat;
|
byte stat;
|
int i;
|
int i;
|
ide_hwgroup_t *hwgroup = HWGROUP(drive);
|
ide_hwgroup_t *hwgroup = HWGROUP(drive);
|
struct request *rq = hwgroup->rq;
|
struct request *rq = hwgroup->rq;
|
|
|
if (OK_STAT(stat=GET_STAT(),DRIVE_READY,drive->bad_wstat)) {
|
if (OK_STAT(stat=GET_STAT(),DRIVE_READY,drive->bad_wstat)) {
|
#ifdef DEBUG
|
#ifdef DEBUG
|
printk("%s: write: sector %ld, buffer=0x%08lx, remaining=%ld\n",
|
printk("%s: write: sector %ld, buffer=0x%08lx, remaining=%ld\n",
|
drive->name, rq->sector, (unsigned long) rq->buffer,
|
drive->name, rq->sector, (unsigned long) rq->buffer,
|
rq->nr_sectors-1);
|
rq->nr_sectors-1);
|
#endif
|
#endif
|
if ((rq->nr_sectors == 1) ^ ((stat & DRQ_STAT) != 0)) {
|
if ((rq->nr_sectors == 1) ^ ((stat & DRQ_STAT) != 0)) {
|
rq->sector++;
|
rq->sector++;
|
rq->buffer += 512;
|
rq->buffer += 512;
|
rq->errors = 0;
|
rq->errors = 0;
|
i = --rq->nr_sectors;
|
i = --rq->nr_sectors;
|
--rq->current_nr_sectors;
|
--rq->current_nr_sectors;
|
if (rq->current_nr_sectors <= 0)
|
if (rq->current_nr_sectors <= 0)
|
ide_end_request(1, hwgroup);
|
ide_end_request(1, hwgroup);
|
if (i > 0) {
|
if (i > 0) {
|
ide_output_data (drive, rq->buffer, SECTOR_WORDS);
|
ide_output_data (drive, rq->buffer, SECTOR_WORDS);
|
ide_set_handler (drive, &write_intr, WAIT_CMD);
|
ide_set_handler (drive, &write_intr, WAIT_CMD);
|
}
|
}
|
return;
|
return;
|
}
|
}
|
}
|
}
|
ide_error(drive, "write_intr", stat);
|
ide_error(drive, "write_intr", stat);
|
}
|
}
|
|
|
/*
|
/*
|
* ide_multwrite() transfers a block of up to mcount sectors of data
|
* ide_multwrite() transfers a block of up to mcount sectors of data
|
* to a drive as part of a disk multiple-sector write operation.
|
* to a drive as part of a disk multiple-sector write operation.
|
*/
|
*/
|
void ide_multwrite (ide_drive_t *drive, unsigned int mcount)
|
void ide_multwrite (ide_drive_t *drive, unsigned int mcount)
|
{
|
{
|
struct request *rq = &HWGROUP(drive)->wrq;
|
struct request *rq = &HWGROUP(drive)->wrq;
|
|
|
do {
|
do {
|
unsigned int nsect = rq->current_nr_sectors;
|
unsigned int nsect = rq->current_nr_sectors;
|
if (nsect > mcount)
|
if (nsect > mcount)
|
nsect = mcount;
|
nsect = mcount;
|
mcount -= nsect;
|
mcount -= nsect;
|
|
|
ide_output_data(drive, rq->buffer, nsect<<7);
|
ide_output_data(drive, rq->buffer, nsect<<7);
|
#ifdef DEBUG
|
#ifdef DEBUG
|
printk("%s: multwrite: sector %ld, buffer=0x%08lx, count=%d, remaining=%ld\n",
|
printk("%s: multwrite: sector %ld, buffer=0x%08lx, count=%d, remaining=%ld\n",
|
drive->name, rq->sector, (unsigned long) rq->buffer,
|
drive->name, rq->sector, (unsigned long) rq->buffer,
|
nsect, rq->nr_sectors - nsect);
|
nsect, rq->nr_sectors - nsect);
|
#endif
|
#endif
|
if ((rq->nr_sectors -= nsect) <= 0)
|
if ((rq->nr_sectors -= nsect) <= 0)
|
break;
|
break;
|
if ((rq->current_nr_sectors -= nsect) == 0) {
|
if ((rq->current_nr_sectors -= nsect) == 0) {
|
if ((rq->bh = rq->bh->b_reqnext) != NULL) {
|
if ((rq->bh = rq->bh->b_reqnext) != NULL) {
|
rq->current_nr_sectors = rq->bh->b_size>>9;
|
rq->current_nr_sectors = rq->bh->b_size>>9;
|
rq->buffer = rq->bh->b_data;
|
rq->buffer = rq->bh->b_data;
|
} else {
|
} else {
|
panic("%s: buffer list corrupted\n", drive->name);
|
panic("%s: buffer list corrupted\n", drive->name);
|
break;
|
break;
|
}
|
}
|
} else {
|
} else {
|
rq->buffer += nsect << 9;
|
rq->buffer += nsect << 9;
|
}
|
}
|
} while (mcount);
|
} while (mcount);
|
}
|
}
|
|
|
/*
|
/*
|
* multwrite_intr() is the handler for disk multwrite interrupts
|
* multwrite_intr() is the handler for disk multwrite interrupts
|
*/
|
*/
|
static void multwrite_intr (ide_drive_t *drive)
|
static void multwrite_intr (ide_drive_t *drive)
|
{
|
{
|
byte stat;
|
byte stat;
|
int i;
|
int i;
|
ide_hwgroup_t *hwgroup = HWGROUP(drive);
|
ide_hwgroup_t *hwgroup = HWGROUP(drive);
|
struct request *rq = &hwgroup->wrq;
|
struct request *rq = &hwgroup->wrq;
|
|
|
if (OK_STAT(stat=GET_STAT(),DRIVE_READY,drive->bad_wstat)) {
|
if (OK_STAT(stat=GET_STAT(),DRIVE_READY,drive->bad_wstat)) {
|
if (stat & DRQ_STAT) {
|
if (stat & DRQ_STAT) {
|
if (rq->nr_sectors) {
|
if (rq->nr_sectors) {
|
ide_multwrite(drive, drive->mult_count);
|
ide_multwrite(drive, drive->mult_count);
|
ide_set_handler (drive, &multwrite_intr, WAIT_CMD);
|
ide_set_handler (drive, &multwrite_intr, WAIT_CMD);
|
return;
|
return;
|
}
|
}
|
} else {
|
} else {
|
if (!rq->nr_sectors) { /* all done? */
|
if (!rq->nr_sectors) { /* all done? */
|
rq = hwgroup->rq;
|
rq = hwgroup->rq;
|
for (i = rq->nr_sectors; i > 0;){
|
for (i = rq->nr_sectors; i > 0;){
|
i -= rq->current_nr_sectors;
|
i -= rq->current_nr_sectors;
|
ide_end_request(1, hwgroup);
|
ide_end_request(1, hwgroup);
|
}
|
}
|
return;
|
return;
|
}
|
}
|
}
|
}
|
}
|
}
|
ide_error(drive, "multwrite_intr", stat);
|
ide_error(drive, "multwrite_intr", stat);
|
}
|
}
|
|
|
/*
|
/*
|
* Issue a simple drive command
|
* Issue a simple drive command
|
* The drive must be selected beforehand.
|
* The drive must be selected beforehand.
|
*/
|
*/
|
static void ide_cmd(ide_drive_t *drive, byte cmd, byte nsect, ide_handler_t *handler)
|
static void ide_cmd(ide_drive_t *drive, byte cmd, byte nsect, ide_handler_t *handler)
|
{
|
{
|
ide_set_handler (drive, handler, WAIT_CMD);
|
ide_set_handler (drive, handler, WAIT_CMD);
|
OUT_BYTE(drive->ctl,IDE_CONTROL_REG);
|
OUT_BYTE(drive->ctl,IDE_CONTROL_REG);
|
OUT_BYTE(nsect,IDE_NSECTOR_REG);
|
OUT_BYTE(nsect,IDE_NSECTOR_REG);
|
OUT_BYTE(cmd,IDE_COMMAND_REG);
|
OUT_BYTE(cmd,IDE_COMMAND_REG);
|
}
|
}
|
|
|
/*
|
/*
|
* set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd.
|
* set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd.
|
*/
|
*/
|
static void set_multmode_intr (ide_drive_t *drive)
|
static void set_multmode_intr (ide_drive_t *drive)
|
{
|
{
|
byte stat = GET_STAT();
|
byte stat = GET_STAT();
|
|
|
sti();
|
sti();
|
if (OK_STAT(stat,READY_STAT,BAD_STAT)) {
|
if (OK_STAT(stat,READY_STAT,BAD_STAT)) {
|
drive->mult_count = drive->mult_req;
|
drive->mult_count = drive->mult_req;
|
} else {
|
} else {
|
drive->mult_req = drive->mult_count = 0;
|
drive->mult_req = drive->mult_count = 0;
|
drive->special.b.recalibrate = 1;
|
drive->special.b.recalibrate = 1;
|
(void) ide_dump_status(drive, "set_multmode", stat);
|
(void) ide_dump_status(drive, "set_multmode", stat);
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd.
|
* set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd.
|
*/
|
*/
|
static void set_geometry_intr (ide_drive_t *drive)
|
static void set_geometry_intr (ide_drive_t *drive)
|
{
|
{
|
byte stat = GET_STAT();
|
byte stat = GET_STAT();
|
|
|
sti();
|
sti();
|
if (!OK_STAT(stat,READY_STAT,BAD_STAT))
|
if (!OK_STAT(stat,READY_STAT,BAD_STAT))
|
ide_error(drive, "set_geometry_intr", stat);
|
ide_error(drive, "set_geometry_intr", stat);
|
}
|
}
|
|
|
/*
|
/*
|
* recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd.
|
* recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd.
|
*/
|
*/
|
static void recal_intr (ide_drive_t *drive)
|
static void recal_intr (ide_drive_t *drive)
|
{
|
{
|
byte stat = GET_STAT();
|
byte stat = GET_STAT();
|
|
|
sti();
|
sti();
|
if (!OK_STAT(stat,READY_STAT,BAD_STAT))
|
if (!OK_STAT(stat,READY_STAT,BAD_STAT))
|
ide_error(drive, "recal_intr", stat);
|
ide_error(drive, "recal_intr", stat);
|
}
|
}
|
|
|
/*
|
/*
|
* mc_intr() is invoked on completion of a WIN_ACKMC cmd.
|
* mc_intr() is invoked on completion of a WIN_ACKMC cmd.
|
*/
|
*/
|
static void mc_intr (ide_drive_t *drive)
|
static void mc_intr (ide_drive_t *drive)
|
{
|
{
|
byte stat = GET_STAT();
|
byte stat = GET_STAT();
|
|
|
sti();
|
sti();
|
if (!OK_STAT(stat,READY_STAT,BAD_STAT))
|
if (!OK_STAT(stat,READY_STAT,BAD_STAT))
|
ide_error(drive, "mc_intr", stat);
|
ide_error(drive, "mc_intr", stat);
|
drive->special.b.mc = 0;
|
drive->special.b.mc = 0;
|
}
|
}
|
|
|
/*
|
/*
|
* drive_cmd_intr() is invoked on completion of a special DRIVE_CMD.
|
* drive_cmd_intr() is invoked on completion of a special DRIVE_CMD.
|
*/
|
*/
|
static void drive_cmd_intr (ide_drive_t *drive)
|
static void drive_cmd_intr (ide_drive_t *drive)
|
{
|
{
|
struct request *rq = HWGROUP(drive)->rq;
|
struct request *rq = HWGROUP(drive)->rq;
|
byte *args = (byte *) rq->buffer;
|
byte *args = (byte *) rq->buffer;
|
byte stat = GET_STAT();
|
byte stat = GET_STAT();
|
|
|
sti();
|
sti();
|
if ((stat & DRQ_STAT) && args && args[3]) {
|
if ((stat & DRQ_STAT) && args && args[3]) {
|
byte io_32bit = drive->io_32bit;
|
byte io_32bit = drive->io_32bit;
|
drive->io_32bit = 0;
|
drive->io_32bit = 0;
|
ide_input_data(drive, &args[4], args[3] * SECTOR_WORDS);
|
ide_input_data(drive, &args[4], args[3] * SECTOR_WORDS);
|
drive->io_32bit = io_32bit;
|
drive->io_32bit = io_32bit;
|
stat = GET_STAT();
|
stat = GET_STAT();
|
}
|
}
|
if (OK_STAT(stat,READY_STAT,BAD_STAT))
|
if (OK_STAT(stat,READY_STAT,BAD_STAT))
|
ide_end_drive_cmd (drive, stat, GET_ERR());
|
ide_end_drive_cmd (drive, stat, GET_ERR());
|
else
|
else
|
ide_error(drive, "drive_cmd", stat); /* calls ide_end_drive_cmd */
|
ide_error(drive, "drive_cmd", stat); /* calls ide_end_drive_cmd */
|
}
|
}
|
|
|
/*
|
/*
|
* do_special() is used to issue WIN_SPECIFY, WIN_RESTORE, and WIN_SETMULT
|
* do_special() is used to issue WIN_SPECIFY, WIN_RESTORE, and WIN_SETMULT
|
* commands to a drive. It used to do much more, but has been scaled back.
|
* commands to a drive. It used to do much more, but has been scaled back.
|
*/
|
*/
|
static inline void do_special (ide_drive_t *drive)
|
static inline void do_special (ide_drive_t *drive)
|
{
|
{
|
special_t *s = &drive->special;
|
special_t *s = &drive->special;
|
|
|
#ifdef DEBUG
|
#ifdef DEBUG
|
printk("%s: do_special: 0x%02x\n", drive->name, s->all);
|
printk("%s: do_special: 0x%02x\n", drive->name, s->all);
|
#endif
|
#endif
|
if (s->b.set_geometry) {
|
if (s->b.set_geometry) {
|
s->b.set_geometry = 0;
|
s->b.set_geometry = 0;
|
if (drive->media == ide_disk && !drive->no_geom) {
|
if (drive->media == ide_disk && !drive->no_geom) {
|
OUT_BYTE(drive->sect,IDE_SECTOR_REG);
|
OUT_BYTE(drive->sect,IDE_SECTOR_REG);
|
OUT_BYTE(drive->cyl,IDE_LCYL_REG);
|
OUT_BYTE(drive->cyl,IDE_LCYL_REG);
|
OUT_BYTE(drive->cyl>>8,IDE_HCYL_REG);
|
OUT_BYTE(drive->cyl>>8,IDE_HCYL_REG);
|
OUT_BYTE(((drive->head-1)|drive->select.all)&0xBF,IDE_SELECT_REG);
|
OUT_BYTE(((drive->head-1)|drive->select.all)&0xBF,IDE_SELECT_REG);
|
if (!IS_PROMISE_DRIVE)
|
if (!IS_PROMISE_DRIVE)
|
ide_cmd(drive, WIN_SPECIFY, drive->sect, &set_geometry_intr);
|
ide_cmd(drive, WIN_SPECIFY, drive->sect, &set_geometry_intr);
|
}
|
}
|
} else if (s->b.recalibrate) {
|
} else if (s->b.recalibrate) {
|
s->b.recalibrate = 0;
|
s->b.recalibrate = 0;
|
if (drive->media == ide_disk && !IS_PROMISE_DRIVE)
|
if (drive->media == ide_disk && !IS_PROMISE_DRIVE)
|
ide_cmd(drive, WIN_RESTORE, drive->sect, &recal_intr);
|
ide_cmd(drive, WIN_RESTORE, drive->sect, &recal_intr);
|
} else if (s->b.set_tune) {
|
} else if (s->b.set_tune) {
|
ide_tuneproc_t *tuneproc = HWIF(drive)->tuneproc;
|
ide_tuneproc_t *tuneproc = HWIF(drive)->tuneproc;
|
s->b.set_tune = 0;
|
s->b.set_tune = 0;
|
if (tuneproc != NULL)
|
if (tuneproc != NULL)
|
tuneproc(drive, drive->tune_req);
|
tuneproc(drive, drive->tune_req);
|
} else if (s->b.set_multmode) {
|
} else if (s->b.set_multmode) {
|
s->b.set_multmode = 0;
|
s->b.set_multmode = 0;
|
if (drive->media == ide_disk) {
|
if (drive->media == ide_disk) {
|
if (drive->id && drive->mult_req > drive->id->max_multsect)
|
if (drive->id && drive->mult_req > drive->id->max_multsect)
|
drive->mult_req = drive->id->max_multsect;
|
drive->mult_req = drive->id->max_multsect;
|
if (!IS_PROMISE_DRIVE)
|
if (!IS_PROMISE_DRIVE)
|
ide_cmd(drive, WIN_SETMULT, drive->mult_req, &set_multmode_intr);
|
ide_cmd(drive, WIN_SETMULT, drive->mult_req, &set_multmode_intr);
|
} else
|
} else
|
drive->mult_req = 0;
|
drive->mult_req = 0;
|
} else if (s->b.mc) {
|
} else if (s->b.mc) {
|
s->b.mc = 0;
|
s->b.mc = 0;
|
if (drive->media == ide_disk && !IS_PROMISE_DRIVE)
|
if (drive->media == ide_disk && !IS_PROMISE_DRIVE)
|
ide_cmd(drive, WIN_ACKMC, drive->sect, &mc_intr);
|
ide_cmd(drive, WIN_ACKMC, drive->sect, &mc_intr);
|
} else if (s->all) {
|
} else if (s->all) {
|
int special = s->all;
|
int special = s->all;
|
s->all = 0;
|
s->all = 0;
|
printk("%s: bad special flag: 0x%02x\n", drive->name, special);
|
printk("%s: bad special flag: 0x%02x\n", drive->name, special);
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* This routine busy-waits for the drive status to be not "busy".
|
* This routine busy-waits for the drive status to be not "busy".
|
* It then checks the status for all of the "good" bits and none
|
* It then checks the status for all of the "good" bits and none
|
* of the "bad" bits, and if all is okay it returns 0. All other
|
* of the "bad" bits, and if all is okay it returns 0. All other
|
* cases return 1 after invoking ide_error() -- caller should just return.
|
* cases return 1 after invoking ide_error() -- caller should just return.
|
*
|
*
|
* This routine should get fixed to not hog the cpu during extra long waits..
|
* This routine should get fixed to not hog the cpu during extra long waits..
|
* That could be done by busy-waiting for the first jiffy or two, and then
|
* That could be done by busy-waiting for the first jiffy or two, and then
|
* setting a timer to wake up at half second intervals thereafter,
|
* setting a timer to wake up at half second intervals thereafter,
|
* until timeout is achieved, before timing out.
|
* until timeout is achieved, before timing out.
|
*/
|
*/
|
int ide_wait_stat (ide_drive_t *drive, byte good, byte bad, unsigned long timeout)
|
int ide_wait_stat (ide_drive_t *drive, byte good, byte bad, unsigned long timeout)
|
{
|
{
|
byte stat;
|
byte stat;
|
unsigned long flags;
|
unsigned long flags;
|
|
|
udelay(1); /* spec allows drive 400ns to assert "BUSY" */
|
udelay(1); /* spec allows drive 400ns to assert "BUSY" */
|
if ((stat = GET_STAT()) & BUSY_STAT) {
|
if ((stat = GET_STAT()) & BUSY_STAT) {
|
save_flags(flags);
|
save_flags(flags);
|
sti();
|
sti();
|
timeout += jiffies;
|
timeout += jiffies;
|
while ((stat = GET_STAT()) & BUSY_STAT) {
|
while ((stat = GET_STAT()) & BUSY_STAT) {
|
if (jiffies > timeout) {
|
if (jiffies > timeout) {
|
restore_flags(flags);
|
restore_flags(flags);
|
ide_error(drive, "status timeout", stat);
|
ide_error(drive, "status timeout", stat);
|
return 1;
|
return 1;
|
}
|
}
|
}
|
}
|
restore_flags(flags);
|
restore_flags(flags);
|
}
|
}
|
udelay(1); /* allow status to settle, then read it again */
|
udelay(1); /* allow status to settle, then read it again */
|
if (OK_STAT((stat = GET_STAT()), good, bad))
|
if (OK_STAT((stat = GET_STAT()), good, bad))
|
return 0;
|
return 0;
|
ide_error(drive, "status error", stat);
|
ide_error(drive, "status error", stat);
|
return 1;
|
return 1;
|
}
|
}
|
|
|
/*
|
/*
|
* do_rw_disk() issues READ and WRITE commands to a disk,
|
* do_rw_disk() issues READ and WRITE commands to a disk,
|
* using LBA if supported, or CHS otherwise, to address sectors.
|
* using LBA if supported, or CHS otherwise, to address sectors.
|
* It also takes care of issuing special DRIVE_CMDs.
|
* It also takes care of issuing special DRIVE_CMDs.
|
*/
|
*/
|
static inline void do_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long block)
|
static inline void do_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long block)
|
{
|
{
|
ide_hwif_t *hwif = HWIF(drive);
|
ide_hwif_t *hwif = HWIF(drive);
|
unsigned long io_base = hwif->io.io_base;
|
unsigned long io_base = hwif->io.io_base;
|
unsigned long io_shift = hwif->io.io_shift;
|
unsigned long io_shift = hwif->io.io_shift;
|
#ifdef CONFIG_BLK_DEV_PROMISE
|
#ifdef CONFIG_BLK_DEV_PROMISE
|
int use_promise_io = 0;
|
int use_promise_io = 0;
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
|
|
OUT_BYTE(drive->ctl,IDE_CONTROL_REG);
|
OUT_BYTE(drive->ctl,IDE_CONTROL_REG);
|
OUT_BYTE(rq->nr_sectors,io_base + (IDE_NSECTOR_OFFSET << io_shift));
|
OUT_BYTE(rq->nr_sectors,io_base + (IDE_NSECTOR_OFFSET << io_shift));
|
#ifdef CONFIG_BLK_DEV_PROMISE
|
#ifdef CONFIG_BLK_DEV_PROMISE
|
if (IS_PROMISE_DRIVE) {
|
if (IS_PROMISE_DRIVE) {
|
if (hwif->is_promise2 || rq->cmd == READ) {
|
if (hwif->is_promise2 || rq->cmd == READ) {
|
use_promise_io = 1;
|
use_promise_io = 1;
|
}
|
}
|
}
|
}
|
if (drive->select.b.lba || use_promise_io) {
|
if (drive->select.b.lba || use_promise_io) {
|
#else /* !CONFIG_BLK_DEV_PROMISE */
|
#else /* !CONFIG_BLK_DEV_PROMISE */
|
if (drive->select.b.lba) {
|
if (drive->select.b.lba) {
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
#ifdef DEBUG
|
#ifdef DEBUG
|
printk("%s: %sing: LBAsect=%ld, sectors=%ld, buffer=0x%08lx\n",
|
printk("%s: %sing: LBAsect=%ld, sectors=%ld, buffer=0x%08lx\n",
|
drive->name, (rq->cmd==READ)?"read":"writ",
|
drive->name, (rq->cmd==READ)?"read":"writ",
|
block, rq->nr_sectors, (unsigned long) rq->buffer);
|
block, rq->nr_sectors, (unsigned long) rq->buffer);
|
#endif
|
#endif
|
OUT_BYTE(block,io_base + (IDE_SECTOR_OFFSET << io_shift));
|
OUT_BYTE(block,io_base + (IDE_SECTOR_OFFSET << io_shift));
|
OUT_BYTE(block>>=8,io_base + (IDE_LCYL_OFFSET << io_shift));
|
OUT_BYTE(block>>=8,io_base + (IDE_LCYL_OFFSET << io_shift));
|
OUT_BYTE(block>>=8,io_base + (IDE_HCYL_OFFSET << io_shift));
|
OUT_BYTE(block>>=8,io_base + (IDE_HCYL_OFFSET << io_shift));
|
OUT_BYTE(((block>>8)&0x0f)|drive->select.all,io_base + (IDE_SELECT_OFFSET << io_shift));
|
OUT_BYTE(((block>>8)&0x0f)|drive->select.all,io_base + (IDE_SELECT_OFFSET << io_shift));
|
} else {
|
} else {
|
unsigned int sect,head,cyl,track;
|
unsigned int sect,head,cyl,track;
|
track = block / drive->sect;
|
track = block / drive->sect;
|
sect = block % drive->sect + 1;
|
sect = block % drive->sect + 1;
|
OUT_BYTE(sect,io_base + (IDE_SECTOR_OFFSET << io_shift));
|
OUT_BYTE(sect,io_base + (IDE_SECTOR_OFFSET << io_shift));
|
head = track % drive->head;
|
head = track % drive->head;
|
cyl = track / drive->head;
|
cyl = track / drive->head;
|
OUT_BYTE(cyl,io_base + (IDE_LCYL_OFFSET << io_shift));
|
OUT_BYTE(cyl,io_base + (IDE_LCYL_OFFSET << io_shift));
|
OUT_BYTE(cyl>>8,io_base + (IDE_HCYL_OFFSET << io_shift));
|
OUT_BYTE(cyl>>8,io_base + (IDE_HCYL_OFFSET << io_shift));
|
OUT_BYTE(head|drive->select.all,io_base + (IDE_SELECT_OFFSET << io_shift));
|
OUT_BYTE(head|drive->select.all,io_base + (IDE_SELECT_OFFSET << io_shift));
|
#ifdef DEBUG
|
#ifdef DEBUG
|
printk("%s: %sing: CHS=%d/%d/%d, sectors=%ld, buffer=0x%08lx\n",
|
printk("%s: %sing: CHS=%d/%d/%d, sectors=%ld, buffer=0x%08lx\n",
|
drive->name, (rq->cmd==READ)?"read":"writ", cyl,
|
drive->name, (rq->cmd==READ)?"read":"writ", cyl,
|
head, sect, rq->nr_sectors, (unsigned long) rq->buffer);
|
head, sect, rq->nr_sectors, (unsigned long) rq->buffer);
|
#endif
|
#endif
|
}
|
}
|
#ifdef CONFIG_BLK_DEV_PROMISE
|
#ifdef CONFIG_BLK_DEV_PROMISE
|
if (use_promise_io) {
|
if (use_promise_io) {
|
do_promise_io (drive, rq);
|
do_promise_io (drive, rq);
|
return;
|
return;
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
if (rq->cmd == READ) {
|
if (rq->cmd == READ) {
|
#ifdef CONFIG_BLK_DEV_TRITON
|
#ifdef CONFIG_BLK_DEV_TRITON
|
if (drive->using_dma && !(HWIF(drive)->dmaproc(ide_dma_read, drive)))
|
if (drive->using_dma && !(HWIF(drive)->dmaproc(ide_dma_read, drive)))
|
return;
|
return;
|
#endif /* CONFIG_BLK_DEV_TRITON */
|
#endif /* CONFIG_BLK_DEV_TRITON */
|
ide_set_handler(drive, &read_intr, WAIT_CMD);
|
ide_set_handler(drive, &read_intr, WAIT_CMD);
|
OUT_BYTE(drive->mult_count ? WIN_MULTREAD : WIN_READ, io_base + (IDE_COMMAND_OFFSET << io_shift));
|
OUT_BYTE(drive->mult_count ? WIN_MULTREAD : WIN_READ, io_base + (IDE_COMMAND_OFFSET << io_shift));
|
return;
|
return;
|
}
|
}
|
if (rq->cmd == WRITE) {
|
if (rq->cmd == WRITE) {
|
#ifdef CONFIG_BLK_DEV_TRITON
|
#ifdef CONFIG_BLK_DEV_TRITON
|
if (drive->using_dma && !(HWIF(drive)->dmaproc(ide_dma_write, drive)))
|
if (drive->using_dma && !(HWIF(drive)->dmaproc(ide_dma_write, drive)))
|
return;
|
return;
|
#endif /* CONFIG_BLK_DEV_TRITON */
|
#endif /* CONFIG_BLK_DEV_TRITON */
|
OUT_BYTE(drive->mult_count ? WIN_MULTWRITE : WIN_WRITE, io_base + (IDE_COMMAND_OFFSET << io_shift));
|
OUT_BYTE(drive->mult_count ? WIN_MULTWRITE : WIN_WRITE, io_base + (IDE_COMMAND_OFFSET << io_shift));
|
if (ide_wait_stat(drive, DATA_READY, drive->bad_wstat, WAIT_DRQ)) {
|
if (ide_wait_stat(drive, DATA_READY, drive->bad_wstat, WAIT_DRQ)) {
|
printk("%s: no DRQ after issuing %s\n", drive->name,
|
printk("%s: no DRQ after issuing %s\n", drive->name,
|
drive->mult_count ? "MULTWRITE" : "WRITE");
|
drive->mult_count ? "MULTWRITE" : "WRITE");
|
return;
|
return;
|
}
|
}
|
if (!drive->unmask)
|
if (!drive->unmask)
|
cli();
|
cli();
|
if (drive->mult_count) {
|
if (drive->mult_count) {
|
HWGROUP(drive)->wrq = *rq; /* scratchpad */
|
HWGROUP(drive)->wrq = *rq; /* scratchpad */
|
ide_set_handler (drive, &multwrite_intr, WAIT_CMD);
|
ide_set_handler (drive, &multwrite_intr, WAIT_CMD);
|
ide_multwrite(drive, drive->mult_count);
|
ide_multwrite(drive, drive->mult_count);
|
} else {
|
} else {
|
ide_set_handler (drive, &write_intr, WAIT_CMD);
|
ide_set_handler (drive, &write_intr, WAIT_CMD);
|
ide_output_data(drive, rq->buffer, SECTOR_WORDS);
|
ide_output_data(drive, rq->buffer, SECTOR_WORDS);
|
}
|
}
|
return;
|
return;
|
}
|
}
|
printk("%s: bad command: %d\n", drive->name, rq->cmd);
|
printk("%s: bad command: %d\n", drive->name, rq->cmd);
|
ide_end_request(0, HWGROUP(drive));
|
ide_end_request(0, HWGROUP(drive));
|
}
|
}
|
|
|
/*
|
/*
|
* execute_drive_cmd() issues a special drive command,
|
* execute_drive_cmd() issues a special drive command,
|
* usually initiated by ioctl() from the external hdparm program.
|
* usually initiated by ioctl() from the external hdparm program.
|
*/
|
*/
|
static void execute_drive_cmd (ide_drive_t *drive, struct request *rq)
|
static void execute_drive_cmd (ide_drive_t *drive, struct request *rq)
|
{
|
{
|
ide_hwif_t *hwif = HWIF(drive);
|
ide_hwif_t *hwif = HWIF(drive);
|
unsigned long io_base = hwif->io.io_base;
|
unsigned long io_base = hwif->io.io_base;
|
unsigned long io_shift = hwif->io.io_shift;
|
unsigned long io_shift = hwif->io.io_shift;
|
byte *args = rq->buffer;
|
byte *args = rq->buffer;
|
if (args) {
|
if (args) {
|
#ifdef DEBUG
|
#ifdef DEBUG
|
printk("%s: DRIVE_CMD cmd=0x%02x sc=0x%02x fr=0x%02x xx=0x%02x\n",
|
printk("%s: DRIVE_CMD cmd=0x%02x sc=0x%02x fr=0x%02x xx=0x%02x\n",
|
drive->name, args[0], args[1], args[2], args[3]);
|
drive->name, args[0], args[1], args[2], args[3]);
|
#endif
|
#endif
|
OUT_BYTE(args[2],io_base + (IDE_FEATURE_OFFSET << io_shift));
|
OUT_BYTE(args[2],io_base + (IDE_FEATURE_OFFSET << io_shift));
|
ide_cmd(drive, args[0], args[1], &drive_cmd_intr);
|
ide_cmd(drive, args[0], args[1], &drive_cmd_intr);
|
return;
|
return;
|
} else {
|
} else {
|
/*
|
/*
|
* NULL is actually a valid way of waiting for
|
* NULL is actually a valid way of waiting for
|
* all current requests to be flushed from the queue.
|
* all current requests to be flushed from the queue.
|
*/
|
*/
|
#ifdef DEBUG
|
#ifdef DEBUG
|
printk("%s: DRIVE_CMD (null)\n", drive->name);
|
printk("%s: DRIVE_CMD (null)\n", drive->name);
|
#endif
|
#endif
|
ide_end_drive_cmd(drive, GET_STAT(), GET_ERR());
|
ide_end_drive_cmd(drive, GET_STAT(), GET_ERR());
|
return;
|
return;
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* do_request() initiates handling of a new I/O request
|
* do_request() initiates handling of a new I/O request
|
*/
|
*/
|
static inline void do_request (ide_hwif_t *hwif, struct request *rq)
|
static inline void do_request (ide_hwif_t *hwif, struct request *rq)
|
{
|
{
|
unsigned int minor, unit;
|
unsigned int minor, unit;
|
unsigned long block, blockend;
|
unsigned long block, blockend;
|
ide_drive_t *drive;
|
ide_drive_t *drive;
|
|
|
sti();
|
sti();
|
#ifdef DEBUG
|
#ifdef DEBUG
|
printk("%s: do_request: current=0x%08lx\n", hwif->name, (unsigned long) rq);
|
printk("%s: do_request: current=0x%08lx\n", hwif->name, (unsigned long) rq);
|
#endif
|
#endif
|
minor = MINOR(rq->rq_dev);
|
minor = MINOR(rq->rq_dev);
|
unit = minor >> PARTN_BITS;
|
unit = minor >> PARTN_BITS;
|
if (MAJOR(rq->rq_dev) != hwif->major || unit >= MAX_DRIVES) {
|
if (MAJOR(rq->rq_dev) != hwif->major || unit >= MAX_DRIVES) {
|
printk("%s: bad device number: %s\n",
|
printk("%s: bad device number: %s\n",
|
hwif->name, kdevname(rq->rq_dev));
|
hwif->name, kdevname(rq->rq_dev));
|
goto kill_rq;
|
goto kill_rq;
|
}
|
}
|
drive = &hwif->drives[unit];
|
drive = &hwif->drives[unit];
|
#ifdef DEBUG
|
#ifdef DEBUG
|
if (rq->bh && !buffer_locked(rq->bh)) {
|
if (rq->bh && !buffer_locked(rq->bh)) {
|
printk("%s: block not locked\n", drive->name);
|
printk("%s: block not locked\n", drive->name);
|
goto kill_rq;
|
goto kill_rq;
|
}
|
}
|
#endif
|
#endif
|
block = rq->sector;
|
block = rq->sector;
|
blockend = block + rq->nr_sectors;
|
blockend = block + rq->nr_sectors;
|
if ((blockend < block) || (blockend > drive->part[minor&PARTN_MASK].nr_sects)) {
|
if ((blockend < block) || (blockend > drive->part[minor&PARTN_MASK].nr_sects)) {
|
printk("%s%c: bad access: block=%ld, count=%ld\n", drive->name,
|
printk("%s%c: bad access: block=%ld, count=%ld\n", drive->name,
|
(minor&PARTN_MASK)?'0'+(minor&PARTN_MASK):' ', block, rq->nr_sectors);
|
(minor&PARTN_MASK)?'0'+(minor&PARTN_MASK):' ', block, rq->nr_sectors);
|
goto kill_rq;
|
goto kill_rq;
|
}
|
}
|
block += drive->part[minor&PARTN_MASK].start_sect + drive->sect0;
|
block += drive->part[minor&PARTN_MASK].start_sect + drive->sect0;
|
#if FAKE_FDISK_FOR_EZDRIVE
|
#if FAKE_FDISK_FOR_EZDRIVE
|
if (block == 0 && drive->remap_0_to_1)
|
if (block == 0 && drive->remap_0_to_1)
|
block = 1; /* redirect MBR access to EZ-Drive partn table */
|
block = 1; /* redirect MBR access to EZ-Drive partn table */
|
#endif /* FAKE_FDISK_FOR_EZDRIVE */
|
#endif /* FAKE_FDISK_FOR_EZDRIVE */
|
((ide_hwgroup_t *)hwif->hwgroup)->drive = drive;
|
((ide_hwgroup_t *)hwif->hwgroup)->drive = drive;
|
#if (DISK_RECOVERY_TIME > 0)
|
#if (DISK_RECOVERY_TIME > 0)
|
while ((read_timer() - hwif->last_time) < DISK_RECOVERY_TIME);
|
while ((read_timer() - hwif->last_time) < DISK_RECOVERY_TIME);
|
#endif
|
#endif
|
|
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
POLL_HWIF_TAPE_DRIVE; /* macro from ide-tape.h */
|
POLL_HWIF_TAPE_DRIVE; /* macro from ide-tape.h */
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
|
|
SELECT_DRIVE(hwif,drive);
|
SELECT_DRIVE(hwif,drive);
|
if (ide_wait_stat(drive, drive->ready_stat, BUSY_STAT|DRQ_STAT, WAIT_READY)) {
|
if (ide_wait_stat(drive, drive->ready_stat, BUSY_STAT|DRQ_STAT, WAIT_READY)) {
|
printk("%s: drive not ready for command\n", drive->name);
|
printk("%s: drive not ready for command\n", drive->name);
|
return;
|
return;
|
}
|
}
|
|
|
if (!drive->special.all) {
|
if (!drive->special.all) {
|
if (rq->cmd == IDE_DRIVE_CMD) {
|
if (rq->cmd == IDE_DRIVE_CMD) {
|
execute_drive_cmd(drive, rq);
|
execute_drive_cmd(drive, rq);
|
return;
|
return;
|
}
|
}
|
#ifdef CONFIG_BLK_DEV_IDEATAPI
|
#ifdef CONFIG_BLK_DEV_IDEATAPI
|
switch (drive->media) {
|
switch (drive->media) {
|
case ide_disk:
|
case ide_disk:
|
do_rw_disk (drive, rq, block);
|
do_rw_disk (drive, rq, block);
|
return;
|
return;
|
#ifdef CONFIG_BLK_DEV_IDECD
|
#ifdef CONFIG_BLK_DEV_IDECD
|
case ide_cdrom:
|
case ide_cdrom:
|
ide_do_rw_cdrom (drive, block);
|
ide_do_rw_cdrom (drive, block);
|
return;
|
return;
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
case ide_tape:
|
case ide_tape:
|
idetape_do_request (drive, rq, block);
|
idetape_do_request (drive, rq, block);
|
return;
|
return;
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
case ide_floppy:
|
case ide_floppy:
|
idefloppy_do_request (drive, rq, block);
|
idefloppy_do_request (drive, rq, block);
|
return;
|
return;
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
#ifdef CONFIG_BLK_DEV_IDESCSI
|
#ifdef CONFIG_BLK_DEV_IDESCSI
|
case ide_scsi:
|
case ide_scsi:
|
idescsi_do_request (drive, rq, block);
|
idescsi_do_request (drive, rq, block);
|
return;
|
return;
|
#endif /* CONFIG_BLK_DEV_IDESCSI */
|
#endif /* CONFIG_BLK_DEV_IDESCSI */
|
|
|
default:
|
default:
|
printk("%s: media type %d not supported\n",
|
printk("%s: media type %d not supported\n",
|
drive->name, drive->media);
|
drive->name, drive->media);
|
goto kill_rq;
|
goto kill_rq;
|
}
|
}
|
#else
|
#else
|
do_rw_disk (drive, rq, block); /* simpler and faster */
|
do_rw_disk (drive, rq, block); /* simpler and faster */
|
return;
|
return;
|
#endif /* CONFIG_BLK_DEV_IDEATAPI */;
|
#endif /* CONFIG_BLK_DEV_IDEATAPI */;
|
}
|
}
|
do_special(drive);
|
do_special(drive);
|
return;
|
return;
|
kill_rq:
|
kill_rq:
|
ide_end_request(0, hwif->hwgroup);
|
ide_end_request(0, hwif->hwgroup);
|
}
|
}
|
|
|
/*
|
/*
|
* The driver enables interrupts as much as possible. In order to do this,
|
* The driver enables interrupts as much as possible. In order to do this,
|
* (a) the device-interrupt is always masked before entry, and
|
* (a) the device-interrupt is always masked before entry, and
|
* (b) the timeout-interrupt is always disabled before entry.
|
* (b) the timeout-interrupt is always disabled before entry.
|
*
|
*
|
* If we enter here from, say irq14, and then start a new request for irq15,
|
* If we enter here from, say irq14, and then start a new request for irq15,
|
* (possible with "serialize" option) then we cannot ensure that we exit
|
* (possible with "serialize" option) then we cannot ensure that we exit
|
* before the irq15 hits us. So, we must be careful not to let this bother us.
|
* before the irq15 hits us. So, we must be careful not to let this bother us.
|
*
|
*
|
* Interrupts are still masked (by default) whenever we are exchanging
|
* Interrupts are still masked (by default) whenever we are exchanging
|
* data/cmds with a drive, because some drives seem to have very poor
|
* data/cmds with a drive, because some drives seem to have very poor
|
* tolerance for latency during I/O. For devices which don't suffer from
|
* tolerance for latency during I/O. For devices which don't suffer from
|
* this problem (most don't), the unmask flag can be set using the "hdparm"
|
* this problem (most don't), the unmask flag can be set using the "hdparm"
|
* utility, to permit other interrupts during data/cmd transfers.
|
* utility, to permit other interrupts during data/cmd transfers.
|
*/
|
*/
|
void ide_do_request (ide_hwgroup_t *hwgroup)
|
void ide_do_request (ide_hwgroup_t *hwgroup)
|
{
|
{
|
cli(); /* paranoia */
|
cli(); /* paranoia */
|
if (hwgroup->handler != NULL) {
|
if (hwgroup->handler != NULL) {
|
printk("%s: EEeekk!! handler not NULL in ide_do_request()\n", hwgroup->hwif->name);
|
printk("%s: EEeekk!! handler not NULL in ide_do_request()\n", hwgroup->hwif->name);
|
return;
|
return;
|
}
|
}
|
do {
|
do {
|
ide_hwif_t *hwif = hwgroup->hwif;
|
ide_hwif_t *hwif = hwgroup->hwif;
|
struct request *rq;
|
struct request *rq;
|
if ((rq = hwgroup->rq) == NULL) {
|
if ((rq = hwgroup->rq) == NULL) {
|
if (hwif->sharing_irq && hwgroup->drive) /* set nIEN */
|
if (hwif->sharing_irq && hwgroup->drive) /* set nIEN */
|
OUT_BYTE(hwgroup->drive->ctl|2,hwif->io.ctl_port);
|
OUT_BYTE(hwgroup->drive->ctl|2,hwif->io.ctl_port);
|
/*
|
/*
|
* hwgroup->next_hwif is different from hwgroup->hwif
|
* hwgroup->next_hwif is different from hwgroup->hwif
|
* only when a request is inserted using "ide_next".
|
* only when a request is inserted using "ide_next".
|
* This saves wear and tear on IDE tapes.
|
* This saves wear and tear on IDE tapes.
|
*/
|
*/
|
hwif = hwgroup->next_hwif;
|
hwif = hwgroup->next_hwif;
|
do {
|
do {
|
rq = blk_dev[hwif->major].current_request;
|
rq = blk_dev[hwif->major].current_request;
|
if (rq != NULL && rq->rq_status != RQ_INACTIVE)
|
if (rq != NULL && rq->rq_status != RQ_INACTIVE)
|
goto got_rq;
|
goto got_rq;
|
} while ((hwif = hwif->next) != hwgroup->next_hwif);
|
} while ((hwif = hwif->next) != hwgroup->next_hwif);
|
hwgroup->active = 0;
|
hwgroup->active = 0;
|
return; /* no work left for this hwgroup */
|
return; /* no work left for this hwgroup */
|
}
|
}
|
got_rq:
|
got_rq:
|
do_request(hwgroup->hwif = hwgroup->next_hwif = hwif, hwgroup->rq = rq);
|
do_request(hwgroup->hwif = hwgroup->next_hwif = hwif, hwgroup->rq = rq);
|
cli();
|
cli();
|
} while (hwgroup->handler == NULL);
|
} while (hwgroup->handler == NULL);
|
}
|
}
|
|
|
/*
|
/*
|
* do_hwgroup_request() invokes ide_do_request() after first masking
|
* do_hwgroup_request() invokes ide_do_request() after first masking
|
* all possible interrupts for the current hwgroup. This prevents race
|
* all possible interrupts for the current hwgroup. This prevents race
|
* conditions in the event that an unexpected interrupt occurs while
|
* conditions in the event that an unexpected interrupt occurs while
|
* we are in the driver.
|
* we are in the driver.
|
*
|
*
|
* Note that when an interrupt is used to reenter the driver, the first level
|
* Note that when an interrupt is used to reenter the driver, the first level
|
* handler will already have masked the irq that triggered, but any other ones
|
* handler will already have masked the irq that triggered, but any other ones
|
* for the hwgroup will still be unmasked. The driver tries to be careful
|
* for the hwgroup will still be unmasked. The driver tries to be careful
|
* about such things.
|
* about such things.
|
*/
|
*/
|
static void do_hwgroup_request (ide_hwgroup_t *hwgroup)
|
static void do_hwgroup_request (ide_hwgroup_t *hwgroup)
|
{
|
{
|
if (hwgroup->handler == NULL) {
|
if (hwgroup->handler == NULL) {
|
ide_hwif_t *hgif = hwgroup->hwif;
|
ide_hwif_t *hgif = hwgroup->hwif;
|
ide_hwif_t *hwif = hgif;
|
ide_hwif_t *hwif = hgif;
|
hwgroup->active = 1;
|
hwgroup->active = 1;
|
do {
|
do {
|
disable_irq(hwif->irq);
|
disable_irq(hwif->irq);
|
} while ((hwif = hwif->next) != hgif);
|
} while ((hwif = hwif->next) != hgif);
|
ide_do_request (hwgroup);
|
ide_do_request (hwgroup);
|
do {
|
do {
|
enable_irq(hwif->irq);
|
enable_irq(hwif->irq);
|
} while ((hwif = hwif->next) != hgif);
|
} while ((hwif = hwif->next) != hgif);
|
}
|
}
|
}
|
}
|
|
|
static void do_ide0_request (void) /* invoked with cli() */
|
static void do_ide0_request (void) /* invoked with cli() */
|
{
|
{
|
do_hwgroup_request (ide_hwifs[0].hwgroup);
|
do_hwgroup_request (ide_hwifs[0].hwgroup);
|
}
|
}
|
|
|
#if MAX_HWIFS > 1
|
#if MAX_HWIFS > 1
|
static void do_ide1_request (void) /* invoked with cli() */
|
static void do_ide1_request (void) /* invoked with cli() */
|
{
|
{
|
do_hwgroup_request (ide_hwifs[1].hwgroup);
|
do_hwgroup_request (ide_hwifs[1].hwgroup);
|
}
|
}
|
#endif
|
#endif
|
|
|
#if MAX_HWIFS > 2
|
#if MAX_HWIFS > 2
|
static void do_ide2_request (void) /* invoked with cli() */
|
static void do_ide2_request (void) /* invoked with cli() */
|
{
|
{
|
do_hwgroup_request (ide_hwifs[2].hwgroup);
|
do_hwgroup_request (ide_hwifs[2].hwgroup);
|
}
|
}
|
#endif
|
#endif
|
|
|
#if MAX_HWIFS > 3
|
#if MAX_HWIFS > 3
|
static void do_ide3_request (void) /* invoked with cli() */
|
static void do_ide3_request (void) /* invoked with cli() */
|
{
|
{
|
do_hwgroup_request (ide_hwifs[3].hwgroup);
|
do_hwgroup_request (ide_hwifs[3].hwgroup);
|
}
|
}
|
#endif
|
#endif
|
|
|
static void timer_expiry (unsigned long data)
|
static void timer_expiry (unsigned long data)
|
{
|
{
|
ide_hwgroup_t *hwgroup = (ide_hwgroup_t *) data;
|
ide_hwgroup_t *hwgroup = (ide_hwgroup_t *) data;
|
ide_drive_t *drive = hwgroup->drive;
|
ide_drive_t *drive = hwgroup->drive;
|
unsigned long flags;
|
unsigned long flags;
|
|
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
|
|
if (hwgroup->poll_timeout != 0) { /* polling in progress? */
|
if (hwgroup->poll_timeout != 0) { /* polling in progress? */
|
ide_handler_t *handler = hwgroup->handler;
|
ide_handler_t *handler = hwgroup->handler;
|
hwgroup->handler = NULL;
|
hwgroup->handler = NULL;
|
handler(drive);
|
handler(drive);
|
} else if (hwgroup->handler == NULL) { /* not waiting for anything? */
|
} else if (hwgroup->handler == NULL) { /* not waiting for anything? */
|
sti(); /* drive must have responded just as the timer expired */
|
sti(); /* drive must have responded just as the timer expired */
|
printk("%s: marginal timeout\n", drive->name);
|
printk("%s: marginal timeout\n", drive->name);
|
} else {
|
} else {
|
hwgroup->handler = NULL; /* abort the operation */
|
hwgroup->handler = NULL; /* abort the operation */
|
if (hwgroup->hwif->dmaproc)
|
if (hwgroup->hwif->dmaproc)
|
(void) hwgroup->hwif->dmaproc (ide_dma_abort, drive);
|
(void) hwgroup->hwif->dmaproc (ide_dma_abort, drive);
|
ide_error(drive, "irq timeout", GET_STAT());
|
ide_error(drive, "irq timeout", GET_STAT());
|
}
|
}
|
if (hwgroup->handler == NULL)
|
if (hwgroup->handler == NULL)
|
do_hwgroup_request (hwgroup);
|
do_hwgroup_request (hwgroup);
|
restore_flags(flags);
|
restore_flags(flags);
|
}
|
}
|
|
|
/*
|
/*
|
* There's nothing really useful we can do with an unexpected interrupt,
|
* There's nothing really useful we can do with an unexpected interrupt,
|
* other than reading the status register (to clear it), and logging it.
|
* other than reading the status register (to clear it), and logging it.
|
* There should be no way that an irq can happen before we're ready for it,
|
* There should be no way that an irq can happen before we're ready for it,
|
* so we needn't worry much about losing an "important" interrupt here.
|
* so we needn't worry much about losing an "important" interrupt here.
|
*
|
*
|
* On laptops (and "green" PCs), an unexpected interrupt occurs whenever the
|
* On laptops (and "green" PCs), an unexpected interrupt occurs whenever the
|
* drive enters "idle", "standby", or "sleep" mode, so if the status looks
|
* drive enters "idle", "standby", or "sleep" mode, so if the status looks
|
* "good", we just ignore the interrupt completely.
|
* "good", we just ignore the interrupt completely.
|
*
|
*
|
* This routine assumes cli() is in effect when called.
|
* This routine assumes cli() is in effect when called.
|
*
|
*
|
* If an unexpected interrupt happens on irq15 while we are handling irq14
|
* If an unexpected interrupt happens on irq15 while we are handling irq14
|
* and if the two interfaces are "serialized" (CMD640), then it looks like
|
* and if the two interfaces are "serialized" (CMD640), then it looks like
|
* we could screw up by interfering with a new request being set up for irq15.
|
* we could screw up by interfering with a new request being set up for irq15.
|
*
|
*
|
* In reality, this is a non-issue. The new command is not sent unless the
|
* In reality, this is a non-issue. The new command is not sent unless the
|
* drive is ready to accept one, in which case we know the drive is not
|
* drive is ready to accept one, in which case we know the drive is not
|
* trying to interrupt us. And ide_set_handler() is always invoked before
|
* trying to interrupt us. And ide_set_handler() is always invoked before
|
* completing the issuance of any new drive command, so we will not be
|
* completing the issuance of any new drive command, so we will not be
|
* accidently invoked as a result of any valid command completion interrupt.
|
* accidently invoked as a result of any valid command completion interrupt.
|
*
|
*
|
*/
|
*/
|
static void unexpected_intr (int irq, ide_hwgroup_t *hwgroup)
|
static void unexpected_intr (int irq, ide_hwgroup_t *hwgroup)
|
{
|
{
|
byte stat;
|
byte stat;
|
unsigned int unit;
|
unsigned int unit;
|
ide_hwif_t *hwif = hwgroup->hwif;
|
ide_hwif_t *hwif = hwgroup->hwif;
|
|
|
/*
|
/*
|
* handle the unexpected interrupt
|
* handle the unexpected interrupt
|
*/
|
*/
|
do {
|
do {
|
if (hwif->irq == irq) {
|
if (hwif->irq == irq) {
|
for (unit = 0; unit < MAX_DRIVES; ++unit) {
|
for (unit = 0; unit < MAX_DRIVES; ++unit) {
|
ide_drive_t *drive = &hwif->drives[unit];
|
ide_drive_t *drive = &hwif->drives[unit];
|
if (!drive->present)
|
if (!drive->present)
|
continue;
|
continue;
|
SELECT_DRIVE(hwif,drive);
|
SELECT_DRIVE(hwif,drive);
|
udelay(100); /* Ugly, but wait_stat() may not be safe here */
|
udelay(100); /* Ugly, but wait_stat() may not be safe here */
|
if (!OK_STAT(stat=GET_STAT(), drive->ready_stat, BAD_STAT)) {
|
if (!OK_STAT(stat=GET_STAT(), drive->ready_stat, BAD_STAT)) {
|
/* Try to not flood the console with msgs */
|
/* Try to not flood the console with msgs */
|
static unsigned long last_msgtime = 0;
|
static unsigned long last_msgtime = 0;
|
if ((last_msgtime + (HZ/2)) < jiffies) {
|
if ((last_msgtime + (HZ/2)) < jiffies) {
|
last_msgtime = jiffies;
|
last_msgtime = jiffies;
|
(void) ide_dump_status(drive, "unexpected_intr", stat);
|
(void) ide_dump_status(drive, "unexpected_intr", stat);
|
}
|
}
|
}
|
}
|
if ((stat & DRQ_STAT))
|
if ((stat & DRQ_STAT))
|
try_to_flush_leftover_data(drive);
|
try_to_flush_leftover_data(drive);
|
}
|
}
|
}
|
}
|
} while ((hwif = hwif->next) != hwgroup->hwif);
|
} while ((hwif = hwif->next) != hwgroup->hwif);
|
SELECT_DRIVE(hwif,hwgroup->drive); /* Ugh.. probably interrupts current I/O */
|
SELECT_DRIVE(hwif,hwgroup->drive); /* Ugh.. probably interrupts current I/O */
|
udelay(100); /* Ugly, but wait_stat() may not be safe here */
|
udelay(100); /* Ugly, but wait_stat() may not be safe here */
|
}
|
}
|
|
|
/*
|
/*
|
* entry point for all interrupts, caller does cli() for us
|
* entry point for all interrupts, caller does cli() for us
|
*/
|
*/
|
void ide_intr (int irq, void *dev_id, struct pt_regs *regs)
|
void ide_intr (int irq, void *dev_id, struct pt_regs *regs)
|
{
|
{
|
ide_hwgroup_t *hwgroup = dev_id;
|
ide_hwgroup_t *hwgroup = dev_id;
|
ide_handler_t *handler;
|
ide_handler_t *handler;
|
|
|
if (irq == hwgroup->hwif->irq && (handler = hwgroup->handler) != NULL) {
|
if (irq == hwgroup->hwif->irq && (handler = hwgroup->handler) != NULL) {
|
ide_drive_t *drive = hwgroup->drive;
|
ide_drive_t *drive = hwgroup->drive;
|
hwgroup->handler = NULL;
|
hwgroup->handler = NULL;
|
del_timer(&(hwgroup->timer));
|
del_timer(&(hwgroup->timer));
|
if (drive->unmask)
|
if (drive->unmask)
|
sti();
|
sti();
|
handler(drive);
|
handler(drive);
|
cli(); /* this is necessary, as next rq may be different irq */
|
cli(); /* this is necessary, as next rq may be different irq */
|
if (hwgroup->handler == NULL) {
|
if (hwgroup->handler == NULL) {
|
SET_RECOVERY_TIMER(HWIF(drive));
|
SET_RECOVERY_TIMER(HWIF(drive));
|
ide_do_request(hwgroup);
|
ide_do_request(hwgroup);
|
}
|
}
|
} else {
|
} else {
|
unexpected_intr(irq, hwgroup);
|
unexpected_intr(irq, hwgroup);
|
}
|
}
|
cli();
|
cli();
|
}
|
}
|
|
|
/*
|
/*
|
* get_info_ptr() returns the (ide_drive_t *) for a given device number.
|
* get_info_ptr() returns the (ide_drive_t *) for a given device number.
|
* It returns NULL if the given device number does not match any present drives.
|
* It returns NULL if the given device number does not match any present drives.
|
*/
|
*/
|
static ide_drive_t *get_info_ptr (kdev_t i_rdev)
|
static ide_drive_t *get_info_ptr (kdev_t i_rdev)
|
{
|
{
|
int major = MAJOR(i_rdev);
|
int major = MAJOR(i_rdev);
|
unsigned int h;
|
unsigned int h;
|
|
|
for (h = 0; h < MAX_HWIFS; ++h) {
|
for (h = 0; h < MAX_HWIFS; ++h) {
|
ide_hwif_t *hwif = &ide_hwifs[h];
|
ide_hwif_t *hwif = &ide_hwifs[h];
|
if (hwif->present && major == hwif->major) {
|
if (hwif->present && major == hwif->major) {
|
unsigned unit = DEVICE_NR(i_rdev);
|
unsigned unit = DEVICE_NR(i_rdev);
|
if (unit < MAX_DRIVES) {
|
if (unit < MAX_DRIVES) {
|
ide_drive_t *drive = &hwif->drives[unit];
|
ide_drive_t *drive = &hwif->drives[unit];
|
if (drive->present)
|
if (drive->present)
|
return drive;
|
return drive;
|
} else if (major == IDE0_MAJOR && unit < 4) {
|
} else if (major == IDE0_MAJOR && unit < 4) {
|
printk("ide: probable bad entry for /dev/hd%c\n", 'a'+unit);
|
printk("ide: probable bad entry for /dev/hd%c\n", 'a'+unit);
|
printk("ide: to fix it, run: /usr/src/linux/scripts/MAKEDEV.ide\n");
|
printk("ide: to fix it, run: /usr/src/linux/scripts/MAKEDEV.ide\n");
|
}
|
}
|
break;
|
break;
|
}
|
}
|
}
|
}
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
/*
|
/*
|
* This function is intended to be used prior to invoking ide_do_drive_cmd().
|
* This function is intended to be used prior to invoking ide_do_drive_cmd().
|
*/
|
*/
|
void ide_init_drive_cmd (struct request *rq)
|
void ide_init_drive_cmd (struct request *rq)
|
{
|
{
|
rq->buffer = NULL;
|
rq->buffer = NULL;
|
rq->cmd = IDE_DRIVE_CMD;
|
rq->cmd = IDE_DRIVE_CMD;
|
rq->sector = 0;
|
rq->sector = 0;
|
rq->nr_sectors = 0;
|
rq->nr_sectors = 0;
|
rq->current_nr_sectors = 0;
|
rq->current_nr_sectors = 0;
|
rq->sem = NULL;
|
rq->sem = NULL;
|
rq->bh = NULL;
|
rq->bh = NULL;
|
rq->bhtail = NULL;
|
rq->bhtail = NULL;
|
rq->next = NULL;
|
rq->next = NULL;
|
|
|
#if 0 /* these are done each time through ide_do_drive_cmd() */
|
#if 0 /* these are done each time through ide_do_drive_cmd() */
|
rq->errors = 0;
|
rq->errors = 0;
|
rq->rq_status = RQ_ACTIVE;
|
rq->rq_status = RQ_ACTIVE;
|
rq->rq_dev = ????;
|
rq->rq_dev = ????;
|
#endif
|
#endif
|
}
|
}
|
|
|
/*
|
/*
|
* This function issues a special IDE device request
|
* This function issues a special IDE device request
|
* onto the request queue.
|
* onto the request queue.
|
*
|
*
|
* If action is ide_wait, then then rq is queued at the end of
|
* If action is ide_wait, then then rq is queued at the end of
|
* the request queue, and the function sleeps until it has been
|
* the request queue, and the function sleeps until it has been
|
* processed. This is for use when invoked from an ioctl handler.
|
* processed. This is for use when invoked from an ioctl handler.
|
*
|
*
|
* If action is ide_preempt, then the rq is queued at the head of
|
* If action is ide_preempt, then the rq is queued at the head of
|
* the request queue, displacing the currently-being-processed
|
* the request queue, displacing the currently-being-processed
|
* request and this function returns immediately without waiting
|
* request and this function returns immediately without waiting
|
* for the new rq to be completed. This is VERY DANGEROUS, and is
|
* for the new rq to be completed. This is VERY DANGEROUS, and is
|
* intended for careful use by the ATAPI tape/cdrom driver code.
|
* intended for careful use by the ATAPI tape/cdrom driver code.
|
*
|
*
|
* If action is ide_next, then the rq is queued immediately after
|
* If action is ide_next, then the rq is queued immediately after
|
* the currently-being-processed-request (if any), and the function
|
* the currently-being-processed-request (if any), and the function
|
* returns without waiting for the new rq to be completed. As above,
|
* returns without waiting for the new rq to be completed. As above,
|
* This is VERY DANGEROUS, and is intended for careful use by the
|
* This is VERY DANGEROUS, and is intended for careful use by the
|
* ATAPI tape/cdrom driver code.
|
* ATAPI tape/cdrom driver code.
|
*
|
*
|
* If action is ide_end, then the rq is queued at the end of the
|
* If action is ide_end, then the rq is queued at the end of the
|
* request queue, and the function returns immediately without waiting
|
* request queue, and the function returns immediately without waiting
|
* for the new rq to be completed. This is again intended for careful
|
* for the new rq to be completed. This is again intended for careful
|
* use by the ATAPI tape/cdrom driver code. (Currently used by ide-tape.c,
|
* use by the ATAPI tape/cdrom driver code. (Currently used by ide-tape.c,
|
* when operating in the pipelined operation mode).
|
* when operating in the pipelined operation mode).
|
*/
|
*/
|
int ide_do_drive_cmd (ide_drive_t *drive, struct request *rq, ide_action_t action)
|
int ide_do_drive_cmd (ide_drive_t *drive, struct request *rq, ide_action_t action)
|
{
|
{
|
unsigned long flags;
|
unsigned long flags;
|
unsigned int major = HWIF(drive)->major;
|
unsigned int major = HWIF(drive)->major;
|
struct request *cur_rq;
|
struct request *cur_rq;
|
struct blk_dev_struct *bdev = &blk_dev[major];
|
struct blk_dev_struct *bdev = &blk_dev[major];
|
struct semaphore sem = MUTEX_LOCKED;
|
struct semaphore sem = MUTEX_LOCKED;
|
|
|
if (IS_PROMISE_DRIVE && rq->buffer != NULL)
|
if (IS_PROMISE_DRIVE && rq->buffer != NULL)
|
return -ENOSYS; /* special drive cmds not supported */
|
return -ENOSYS; /* special drive cmds not supported */
|
rq->errors = 0;
|
rq->errors = 0;
|
rq->rq_status = RQ_ACTIVE;
|
rq->rq_status = RQ_ACTIVE;
|
rq->rq_dev = MKDEV(major,(drive->select.b.unit)<<PARTN_BITS);
|
rq->rq_dev = MKDEV(major,(drive->select.b.unit)<<PARTN_BITS);
|
if (action == ide_wait)
|
if (action == ide_wait)
|
rq->sem = &sem;
|
rq->sem = &sem;
|
unplug_device(bdev);
|
unplug_device(bdev);
|
|
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
if (action == ide_next)
|
if (action == ide_next)
|
HWGROUP(drive)->next_hwif = HWIF(drive);
|
HWGROUP(drive)->next_hwif = HWIF(drive);
|
cur_rq = bdev->current_request;
|
cur_rq = bdev->current_request;
|
|
|
if (cur_rq == NULL || action == ide_preempt) {
|
if (cur_rq == NULL || action == ide_preempt) {
|
rq->next = cur_rq;
|
rq->next = cur_rq;
|
bdev->current_request = rq;
|
bdev->current_request = rq;
|
if (action == ide_preempt)
|
if (action == ide_preempt)
|
HWGROUP(drive)->rq = NULL;
|
HWGROUP(drive)->rq = NULL;
|
} else {
|
} else {
|
if (action == ide_wait || action == ide_end) {
|
if (action == ide_wait || action == ide_end) {
|
while (cur_rq->next != NULL) /* find end of list */
|
while (cur_rq->next != NULL) /* find end of list */
|
cur_rq = cur_rq->next;
|
cur_rq = cur_rq->next;
|
}
|
}
|
rq->next = cur_rq->next;
|
rq->next = cur_rq->next;
|
cur_rq->next = rq;
|
cur_rq->next = rq;
|
}
|
}
|
if (!HWGROUP(drive)->active) {
|
if (!HWGROUP(drive)->active) {
|
do_hwgroup_request(HWGROUP(drive));
|
do_hwgroup_request(HWGROUP(drive));
|
cli();
|
cli();
|
}
|
}
|
if (action == ide_wait && rq->rq_status != RQ_INACTIVE)
|
if (action == ide_wait && rq->rq_status != RQ_INACTIVE)
|
down(&sem); /* wait for it to be serviced */
|
down(&sem); /* wait for it to be serviced */
|
restore_flags(flags);
|
restore_flags(flags);
|
return rq->errors ? -EIO : 0; /* return -EIO if errors */
|
return rq->errors ? -EIO : 0; /* return -EIO if errors */
|
}
|
}
|
|
|
static int ide_open(struct inode * inode, struct file * filp)
|
static int ide_open(struct inode * inode, struct file * filp)
|
{
|
{
|
ide_drive_t *drive;
|
ide_drive_t *drive;
|
unsigned long flags;
|
unsigned long flags;
|
|
|
if ((drive = get_info_ptr(inode->i_rdev)) == NULL)
|
if ((drive = get_info_ptr(inode->i_rdev)) == NULL)
|
return -ENXIO;
|
return -ENXIO;
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
while (drive->busy)
|
while (drive->busy)
|
sleep_on(&drive->wqueue);
|
sleep_on(&drive->wqueue);
|
drive->usage++;
|
drive->usage++;
|
restore_flags(flags);
|
restore_flags(flags);
|
#ifdef CONFIG_BLK_DEV_IDECD
|
#ifdef CONFIG_BLK_DEV_IDECD
|
if (drive->media == ide_cdrom)
|
if (drive->media == ide_cdrom)
|
return ide_cdrom_open (inode, filp, drive);
|
return ide_cdrom_open (inode, filp, drive);
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
if (drive->media == ide_tape)
|
if (drive->media == ide_tape)
|
return idetape_blkdev_open (inode, filp, drive);
|
return idetape_blkdev_open (inode, filp, drive);
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
if (drive->media == ide_floppy)
|
if (drive->media == ide_floppy)
|
return idefloppy_open (inode, filp, drive);
|
return idefloppy_open (inode, filp, drive);
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
#ifdef CONFIG_BLK_DEV_IDESCSI
|
#ifdef CONFIG_BLK_DEV_IDESCSI
|
if (drive->media == ide_scsi)
|
if (drive->media == ide_scsi)
|
return idescsi_open (inode, filp, drive);
|
return idescsi_open (inode, filp, drive);
|
#endif /* CONFIG_BLK_DEV_IDESCSI */
|
#endif /* CONFIG_BLK_DEV_IDESCSI */
|
if (drive->removable && drive->usage == 1) {
|
if (drive->removable && drive->usage == 1) {
|
byte door_lock[] = {WIN_DOORLOCK,0,0,0};
|
byte door_lock[] = {WIN_DOORLOCK,0,0,0};
|
struct request rq;
|
struct request rq;
|
check_disk_change(inode->i_rdev);
|
check_disk_change(inode->i_rdev);
|
ide_init_drive_cmd (&rq);
|
ide_init_drive_cmd (&rq);
|
rq.buffer = door_lock;
|
rq.buffer = door_lock;
|
/*
|
/*
|
* Ignore the return code from door_lock,
|
* Ignore the return code from door_lock,
|
* since the open() has already succeeded,
|
* since the open() has already succeeded,
|
* and the door_lock is irrelevant at this point.
|
* and the door_lock is irrelevant at this point.
|
*/
|
*/
|
(void) ide_do_drive_cmd(drive, &rq, ide_wait);
|
(void) ide_do_drive_cmd(drive, &rq, ide_wait);
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/*
|
/*
|
* Releasing a block device means we sync() it, so that it can safely
|
* Releasing a block device means we sync() it, so that it can safely
|
* be forgotten about...
|
* be forgotten about...
|
*/
|
*/
|
static void ide_release(struct inode * inode, struct file * file)
|
static void ide_release(struct inode * inode, struct file * file)
|
{
|
{
|
ide_drive_t *drive;
|
ide_drive_t *drive;
|
|
|
if ((drive = get_info_ptr(inode->i_rdev)) != NULL) {
|
if ((drive = get_info_ptr(inode->i_rdev)) != NULL) {
|
fsync_dev(inode->i_rdev);
|
fsync_dev(inode->i_rdev);
|
drive->usage--;
|
drive->usage--;
|
#ifdef CONFIG_BLK_DEV_IDECD
|
#ifdef CONFIG_BLK_DEV_IDECD
|
if (drive->media == ide_cdrom) {
|
if (drive->media == ide_cdrom) {
|
ide_cdrom_release (inode, file, drive);
|
ide_cdrom_release (inode, file, drive);
|
return;
|
return;
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
if (drive->media == ide_tape) {
|
if (drive->media == ide_tape) {
|
idetape_blkdev_release (inode, file, drive);
|
idetape_blkdev_release (inode, file, drive);
|
return;
|
return;
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
if (drive->media == ide_floppy) {
|
if (drive->media == ide_floppy) {
|
idefloppy_release (inode, file, drive);
|
idefloppy_release (inode, file, drive);
|
return;
|
return;
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
#ifdef CONFIG_BLK_DEV_IDESCSI
|
#ifdef CONFIG_BLK_DEV_IDESCSI
|
if (drive->media == ide_scsi) {
|
if (drive->media == ide_scsi) {
|
idescsi_ide_release (inode, file, drive);
|
idescsi_ide_release (inode, file, drive);
|
return;
|
return;
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_IDESCSI */
|
#endif /* CONFIG_BLK_DEV_IDESCSI */
|
if (drive->removable && !drive->usage) {
|
if (drive->removable && !drive->usage) {
|
byte door_unlock[] = {WIN_DOORUNLOCK,0,0,0};
|
byte door_unlock[] = {WIN_DOORUNLOCK,0,0,0};
|
struct request rq;
|
struct request rq;
|
invalidate_buffers(inode->i_rdev);
|
invalidate_buffers(inode->i_rdev);
|
ide_init_drive_cmd (&rq);
|
ide_init_drive_cmd (&rq);
|
rq.buffer = door_unlock;
|
rq.buffer = door_unlock;
|
(void) ide_do_drive_cmd(drive, &rq, ide_wait);
|
(void) ide_do_drive_cmd(drive, &rq, ide_wait);
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* This routine is called to flush all partitions and partition tables
|
* This routine is called to flush all partitions and partition tables
|
* for a changed disk, and then re-read the new partition table.
|
* for a changed disk, and then re-read the new partition table.
|
* If we are revalidating a disk because of a media change, then we
|
* If we are revalidating a disk because of a media change, then we
|
* enter with usage == 0. If we are using an ioctl, we automatically have
|
* enter with usage == 0. If we are using an ioctl, we automatically have
|
* usage == 1 (we need an open channel to use an ioctl :-), so this
|
* usage == 1 (we need an open channel to use an ioctl :-), so this
|
* is our limit.
|
* is our limit.
|
*/
|
*/
|
static int revalidate_disk(kdev_t i_rdev)
|
static int revalidate_disk(kdev_t i_rdev)
|
{
|
{
|
ide_drive_t *drive;
|
ide_drive_t *drive;
|
unsigned int p, major, minor;
|
unsigned int p, major, minor;
|
long flags;
|
long flags;
|
|
|
if ((drive = get_info_ptr(i_rdev)) == NULL)
|
if ((drive = get_info_ptr(i_rdev)) == NULL)
|
return -ENODEV;
|
return -ENODEV;
|
|
|
major = MAJOR(i_rdev);
|
major = MAJOR(i_rdev);
|
minor = drive->select.b.unit << PARTN_BITS;
|
minor = drive->select.b.unit << PARTN_BITS;
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
if (drive->busy || (drive->usage > 1)) {
|
if (drive->busy || (drive->usage > 1)) {
|
restore_flags(flags);
|
restore_flags(flags);
|
return -EBUSY;
|
return -EBUSY;
|
};
|
};
|
drive->busy = 1;
|
drive->busy = 1;
|
restore_flags(flags);
|
restore_flags(flags);
|
|
|
for (p = 0; p < (1<<PARTN_BITS); ++p) {
|
for (p = 0; p < (1<<PARTN_BITS); ++p) {
|
if (drive->part[p].nr_sects > 0) {
|
if (drive->part[p].nr_sects > 0) {
|
kdev_t devp = MKDEV(major, minor+p);
|
kdev_t devp = MKDEV(major, minor+p);
|
fsync_dev (devp);
|
fsync_dev (devp);
|
invalidate_inodes (devp);
|
invalidate_inodes (devp);
|
invalidate_buffers (devp);
|
invalidate_buffers (devp);
|
set_blocksize(devp, 1024);
|
set_blocksize(devp, 1024);
|
}
|
}
|
drive->part[p].start_sect = 0;
|
drive->part[p].start_sect = 0;
|
drive->part[p].nr_sects = 0;
|
drive->part[p].nr_sects = 0;
|
};
|
};
|
|
|
drive->part[0].nr_sects = current_capacity(drive);
|
drive->part[0].nr_sects = current_capacity(drive);
|
if ((drive->media != ide_disk && drive->media != ide_floppy) || !drive->part[0].nr_sects)
|
if ((drive->media != ide_disk && drive->media != ide_floppy) || !drive->part[0].nr_sects)
|
drive->part[0].start_sect = -1;
|
drive->part[0].start_sect = -1;
|
resetup_one_dev(HWIF(drive)->gd, drive->select.b.unit);
|
resetup_one_dev(HWIF(drive)->gd, drive->select.b.unit);
|
|
|
drive->busy = 0;
|
drive->busy = 0;
|
wake_up(&drive->wqueue);
|
wake_up(&drive->wqueue);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static int write_fs_long (unsigned long useraddr, long value)
|
static int write_fs_long (unsigned long useraddr, long value)
|
{
|
{
|
int err;
|
int err;
|
|
|
if (NULL == (long *)useraddr)
|
if (NULL == (long *)useraddr)
|
return -EINVAL;
|
return -EINVAL;
|
if ((err = verify_area(VERIFY_WRITE, (long *)useraddr, sizeof(long))))
|
if ((err = verify_area(VERIFY_WRITE, (long *)useraddr, sizeof(long))))
|
return err;
|
return err;
|
put_user((unsigned)value, (long *) useraddr);
|
put_user((unsigned)value, (long *) useraddr);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static int ide_ioctl (struct inode *inode, struct file *file,
|
static int ide_ioctl (struct inode *inode, struct file *file,
|
unsigned int cmd, unsigned long arg)
|
unsigned int cmd, unsigned long arg)
|
{
|
{
|
int err;
|
int err;
|
ide_drive_t *drive;
|
ide_drive_t *drive;
|
unsigned long flags;
|
unsigned long flags;
|
struct request rq;
|
struct request rq;
|
|
|
if (!inode || !(inode->i_rdev))
|
if (!inode || !(inode->i_rdev))
|
return -EINVAL;
|
return -EINVAL;
|
if ((drive = get_info_ptr(inode->i_rdev)) == NULL)
|
if ((drive = get_info_ptr(inode->i_rdev)) == NULL)
|
return -ENODEV;
|
return -ENODEV;
|
ide_init_drive_cmd (&rq);
|
ide_init_drive_cmd (&rq);
|
switch (cmd) {
|
switch (cmd) {
|
case HDIO_GETGEO:
|
case HDIO_GETGEO:
|
{
|
{
|
struct hd_geometry *loc = (struct hd_geometry *) arg;
|
struct hd_geometry *loc = (struct hd_geometry *) arg;
|
if (!loc || (drive->media != ide_disk && drive->media != ide_floppy)) return -EINVAL;
|
if (!loc || (drive->media != ide_disk && drive->media != ide_floppy)) return -EINVAL;
|
err = verify_area(VERIFY_WRITE, loc, sizeof(*loc));
|
err = verify_area(VERIFY_WRITE, loc, sizeof(*loc));
|
if (err) return err;
|
if (err) return err;
|
put_user(drive->bios_head, (byte *) &loc->heads);
|
put_user(drive->bios_head, (byte *) &loc->heads);
|
put_user(drive->bios_sect, (byte *) &loc->sectors);
|
put_user(drive->bios_sect, (byte *) &loc->sectors);
|
put_user(drive->bios_cyl, (unsigned short *) &loc->cylinders);
|
put_user(drive->bios_cyl, (unsigned short *) &loc->cylinders);
|
put_user((unsigned)drive->part[MINOR(inode->i_rdev)&PARTN_MASK].start_sect,
|
put_user((unsigned)drive->part[MINOR(inode->i_rdev)&PARTN_MASK].start_sect,
|
(unsigned long *) &loc->start);
|
(unsigned long *) &loc->start);
|
return 0;
|
return 0;
|
}
|
}
|
case BLKFLSBUF:
|
case BLKFLSBUF:
|
if (!suser()) return -EACCES;
|
if (!suser()) return -EACCES;
|
fsync_dev(inode->i_rdev);
|
fsync_dev(inode->i_rdev);
|
invalidate_buffers(inode->i_rdev);
|
invalidate_buffers(inode->i_rdev);
|
return 0;
|
return 0;
|
|
|
case BLKRASET:
|
case BLKRASET:
|
if (!suser()) return -EACCES;
|
if (!suser()) return -EACCES;
|
if(arg > 0xff) return -EINVAL;
|
if(arg > 0xff) return -EINVAL;
|
read_ahead[MAJOR(inode->i_rdev)] = arg;
|
read_ahead[MAJOR(inode->i_rdev)] = arg;
|
return 0;
|
return 0;
|
|
|
case BLKRAGET:
|
case BLKRAGET:
|
return write_fs_long(arg, read_ahead[MAJOR(inode->i_rdev)]);
|
return write_fs_long(arg, read_ahead[MAJOR(inode->i_rdev)]);
|
|
|
case BLKGETSIZE: /* Return device size */
|
case BLKGETSIZE: /* Return device size */
|
return write_fs_long(arg, drive->part[MINOR(inode->i_rdev)&PARTN_MASK].nr_sects);
|
return write_fs_long(arg, drive->part[MINOR(inode->i_rdev)&PARTN_MASK].nr_sects);
|
case BLKRRPART: /* Re-read partition tables */
|
case BLKRRPART: /* Re-read partition tables */
|
if (!suser()) return -EACCES;
|
if (!suser()) return -EACCES;
|
return revalidate_disk(inode->i_rdev);
|
return revalidate_disk(inode->i_rdev);
|
|
|
case HDIO_GET_KEEPSETTINGS:
|
case HDIO_GET_KEEPSETTINGS:
|
return write_fs_long(arg, drive->keep_settings);
|
return write_fs_long(arg, drive->keep_settings);
|
|
|
case HDIO_GET_UNMASKINTR:
|
case HDIO_GET_UNMASKINTR:
|
return write_fs_long(arg, drive->unmask);
|
return write_fs_long(arg, drive->unmask);
|
|
|
case HDIO_GET_DMA:
|
case HDIO_GET_DMA:
|
return write_fs_long(arg, drive->using_dma);
|
return write_fs_long(arg, drive->using_dma);
|
|
|
case HDIO_GET_32BIT:
|
case HDIO_GET_32BIT:
|
return write_fs_long(arg, drive->io_32bit);
|
return write_fs_long(arg, drive->io_32bit);
|
|
|
case HDIO_GET_MULTCOUNT:
|
case HDIO_GET_MULTCOUNT:
|
return write_fs_long(arg, drive->mult_count);
|
return write_fs_long(arg, drive->mult_count);
|
|
|
case HDIO_GET_IDENTITY:
|
case HDIO_GET_IDENTITY:
|
if (!arg || (MINOR(inode->i_rdev) & PARTN_MASK))
|
if (!arg || (MINOR(inode->i_rdev) & PARTN_MASK))
|
return -EINVAL;
|
return -EINVAL;
|
if (drive->id == NULL)
|
if (drive->id == NULL)
|
return -ENOMSG;
|
return -ENOMSG;
|
err = verify_area(VERIFY_WRITE, (char *)arg, sizeof(*drive->id));
|
err = verify_area(VERIFY_WRITE, (char *)arg, sizeof(*drive->id));
|
if (!err)
|
if (!err)
|
memcpy_tofs((char *)arg, (char *)drive->id, sizeof(*drive->id));
|
memcpy_tofs((char *)arg, (char *)drive->id, sizeof(*drive->id));
|
return err;
|
return err;
|
|
|
case HDIO_GET_NOWERR:
|
case HDIO_GET_NOWERR:
|
return write_fs_long(arg, drive->bad_wstat == BAD_R_STAT);
|
return write_fs_long(arg, drive->bad_wstat == BAD_R_STAT);
|
|
|
case HDIO_SET_DMA:
|
case HDIO_SET_DMA:
|
if (!suser()) return -EACCES;
|
if (!suser()) return -EACCES;
|
#ifdef CONFIG_BLK_DEV_IDECD
|
#ifdef CONFIG_BLK_DEV_IDECD
|
if (drive->media == ide_cdrom)
|
if (drive->media == ide_cdrom)
|
return -EPERM;
|
return -EPERM;
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
if (!drive->id || !(drive->id->capability & 1) || !HWIF(drive)->dmaproc)
|
if (!drive->id || !(drive->id->capability & 1) || !HWIF(drive)->dmaproc)
|
return -EPERM;
|
return -EPERM;
|
case HDIO_SET_KEEPSETTINGS:
|
case HDIO_SET_KEEPSETTINGS:
|
case HDIO_SET_UNMASKINTR:
|
case HDIO_SET_UNMASKINTR:
|
case HDIO_SET_NOWERR:
|
case HDIO_SET_NOWERR:
|
if (arg > 1)
|
if (arg > 1)
|
return -EINVAL;
|
return -EINVAL;
|
case HDIO_SET_32BIT:
|
case HDIO_SET_32BIT:
|
if (!suser()) return -EACCES;
|
if (!suser()) return -EACCES;
|
if ((MINOR(inode->i_rdev) & PARTN_MASK))
|
if ((MINOR(inode->i_rdev) & PARTN_MASK))
|
return -EINVAL;
|
return -EINVAL;
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
switch (cmd) {
|
switch (cmd) {
|
case HDIO_SET_DMA:
|
case HDIO_SET_DMA:
|
if (!(HWIF(drive)->dmaproc)) {
|
if (!(HWIF(drive)->dmaproc)) {
|
restore_flags(flags);
|
restore_flags(flags);
|
return -EPERM;
|
return -EPERM;
|
}
|
}
|
drive->using_dma = arg;
|
drive->using_dma = arg;
|
break;
|
break;
|
case HDIO_SET_KEEPSETTINGS:
|
case HDIO_SET_KEEPSETTINGS:
|
drive->keep_settings = arg;
|
drive->keep_settings = arg;
|
break;
|
break;
|
case HDIO_SET_UNMASKINTR:
|
case HDIO_SET_UNMASKINTR:
|
if (arg && drive->no_unmask) {
|
if (arg && drive->no_unmask) {
|
restore_flags(flags);
|
restore_flags(flags);
|
return -EPERM;
|
return -EPERM;
|
}
|
}
|
drive->unmask = arg;
|
drive->unmask = arg;
|
break;
|
break;
|
case HDIO_SET_NOWERR:
|
case HDIO_SET_NOWERR:
|
drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT;
|
drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT;
|
break;
|
break;
|
case HDIO_SET_32BIT:
|
case HDIO_SET_32BIT:
|
if (arg > (1 + (SUPPORT_VLB_SYNC<<1))) {
|
if (arg > (1 + (SUPPORT_VLB_SYNC<<1))) {
|
restore_flags(flags);
|
restore_flags(flags);
|
return -EINVAL;
|
return -EINVAL;
|
}
|
}
|
if (arg && drive->no_io_32bit) {
|
if (arg && drive->no_io_32bit) {
|
restore_flags(flags);
|
restore_flags(flags);
|
return -EPERM;
|
return -EPERM;
|
}
|
}
|
drive->io_32bit = arg;
|
drive->io_32bit = arg;
|
#ifdef CONFIG_BLK_DEV_DTC2278
|
#ifdef CONFIG_BLK_DEV_DTC2278
|
if (HWIF(drive)->chipset == ide_dtc2278)
|
if (HWIF(drive)->chipset == ide_dtc2278)
|
HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg;
|
HWIF(drive)->drives[!drive->select.b.unit].io_32bit = arg;
|
#endif /* CONFIG_BLK_DEV_DTC2278 */
|
#endif /* CONFIG_BLK_DEV_DTC2278 */
|
break;
|
break;
|
}
|
}
|
restore_flags(flags);
|
restore_flags(flags);
|
return 0;
|
return 0;
|
|
|
case HDIO_SET_MULTCOUNT:
|
case HDIO_SET_MULTCOUNT:
|
if (!suser()) return -EACCES;
|
if (!suser()) return -EACCES;
|
if (MINOR(inode->i_rdev) & PARTN_MASK)
|
if (MINOR(inode->i_rdev) & PARTN_MASK)
|
return -EINVAL;
|
return -EINVAL;
|
if (drive->id && arg > drive->id->max_multsect)
|
if (drive->id && arg > drive->id->max_multsect)
|
return -EINVAL;
|
return -EINVAL;
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
if (drive->special.b.set_multmode) {
|
if (drive->special.b.set_multmode) {
|
restore_flags(flags);
|
restore_flags(flags);
|
return -EBUSY;
|
return -EBUSY;
|
}
|
}
|
drive->mult_req = arg;
|
drive->mult_req = arg;
|
drive->special.b.set_multmode = 1;
|
drive->special.b.set_multmode = 1;
|
restore_flags(flags);
|
restore_flags(flags);
|
(void) ide_do_drive_cmd (drive, &rq, ide_wait);
|
(void) ide_do_drive_cmd (drive, &rq, ide_wait);
|
return (drive->mult_count == arg) ? 0 : -EIO;
|
return (drive->mult_count == arg) ? 0 : -EIO;
|
|
|
case HDIO_DRIVE_CMD:
|
case HDIO_DRIVE_CMD:
|
{
|
{
|
byte args[4], *argbuf = args;
|
byte args[4], *argbuf = args;
|
int argsize = 4;
|
int argsize = 4;
|
if (!suser() || securelevel > 0) return -EACCES;
|
if (!suser() || securelevel > 0) return -EACCES;
|
if (NULL == (void *) arg) {
|
if (NULL == (void *) arg) {
|
err = ide_do_drive_cmd(drive, &rq, ide_wait);
|
err = ide_do_drive_cmd(drive, &rq, ide_wait);
|
} else if (!(err = verify_area(VERIFY_READ,(void *)arg, 4))) {
|
} else if (!(err = verify_area(VERIFY_READ,(void *)arg, 4))) {
|
memcpy_fromfs(args, (void *)arg, 4);
|
memcpy_fromfs(args, (void *)arg, 4);
|
if (args[3]) {
|
if (args[3]) {
|
argsize = 4 + (SECTOR_WORDS * 4 * args[3]);
|
argsize = 4 + (SECTOR_WORDS * 4 * args[3]);
|
argbuf = kmalloc(argsize, GFP_KERNEL);
|
argbuf = kmalloc(argsize, GFP_KERNEL);
|
if (argbuf == NULL)
|
if (argbuf == NULL)
|
return -ENOMEM;
|
return -ENOMEM;
|
argbuf[0] = args[0];
|
argbuf[0] = args[0];
|
argbuf[1] = args[1];
|
argbuf[1] = args[1];
|
argbuf[2] = args[2];
|
argbuf[2] = args[2];
|
argbuf[3] = args[3];
|
argbuf[3] = args[3];
|
}
|
}
|
if (!(err = verify_area(VERIFY_WRITE,(void *)arg, argsize))) {
|
if (!(err = verify_area(VERIFY_WRITE,(void *)arg, argsize))) {
|
rq.buffer = argbuf;
|
rq.buffer = argbuf;
|
err = ide_do_drive_cmd(drive, &rq, ide_wait);
|
err = ide_do_drive_cmd(drive, &rq, ide_wait);
|
memcpy_tofs((void *)arg, argbuf, argsize);
|
memcpy_tofs((void *)arg, argbuf, argsize);
|
}
|
}
|
if (argsize > 4)
|
if (argsize > 4)
|
kfree(argbuf);
|
kfree(argbuf);
|
}
|
}
|
return err;
|
return err;
|
}
|
}
|
case HDIO_SET_PIO_MODE:
|
case HDIO_SET_PIO_MODE:
|
if (!suser()) return -EACCES;
|
if (!suser()) return -EACCES;
|
if (MINOR(inode->i_rdev) & PARTN_MASK)
|
if (MINOR(inode->i_rdev) & PARTN_MASK)
|
return -EINVAL;
|
return -EINVAL;
|
if (!HWIF(drive)->tuneproc)
|
if (!HWIF(drive)->tuneproc)
|
return -ENOSYS;
|
return -ENOSYS;
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
if (drive->special.b.set_tune) {
|
if (drive->special.b.set_tune) {
|
restore_flags(flags);
|
restore_flags(flags);
|
return -EBUSY;
|
return -EBUSY;
|
}
|
}
|
drive->tune_req = (byte) arg;
|
drive->tune_req = (byte) arg;
|
drive->special.b.set_tune = 1;
|
drive->special.b.set_tune = 1;
|
restore_flags(flags);
|
restore_flags(flags);
|
(void) ide_do_drive_cmd (drive, &rq, ide_wait);
|
(void) ide_do_drive_cmd (drive, &rq, ide_wait);
|
return 0;
|
return 0;
|
|
|
RO_IOCTLS(inode->i_rdev, arg);
|
RO_IOCTLS(inode->i_rdev, arg);
|
|
|
default:
|
default:
|
#ifdef CONFIG_BLK_DEV_IDECD
|
#ifdef CONFIG_BLK_DEV_IDECD
|
if (drive->media == ide_cdrom)
|
if (drive->media == ide_cdrom)
|
return ide_cdrom_ioctl(drive, inode, file, cmd, arg);
|
return ide_cdrom_ioctl(drive, inode, file, cmd, arg);
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
if (drive->media == ide_tape)
|
if (drive->media == ide_tape)
|
return idetape_blkdev_ioctl(drive, inode, file, cmd, arg);
|
return idetape_blkdev_ioctl(drive, inode, file, cmd, arg);
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
if (drive->media == ide_floppy)
|
if (drive->media == ide_floppy)
|
return idefloppy_ioctl(drive, inode, file, cmd, arg);
|
return idefloppy_ioctl(drive, inode, file, cmd, arg);
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
#ifdef CONFIG_BLK_DEV_IDESCSI
|
#ifdef CONFIG_BLK_DEV_IDESCSI
|
if (drive->media == ide_scsi)
|
if (drive->media == ide_scsi)
|
return idescsi_ioctl(drive, inode, file, cmd, arg);
|
return idescsi_ioctl(drive, inode, file, cmd, arg);
|
#endif /* CONFIG_BLK_DEV_IDESCSI */
|
#endif /* CONFIG_BLK_DEV_IDESCSI */
|
return -EPERM;
|
return -EPERM;
|
}
|
}
|
}
|
}
|
|
|
static int ide_check_media_change (kdev_t i_rdev)
|
static int ide_check_media_change (kdev_t i_rdev)
|
{
|
{
|
ide_drive_t *drive;
|
ide_drive_t *drive;
|
|
|
if ((drive = get_info_ptr(i_rdev)) == NULL)
|
if ((drive = get_info_ptr(i_rdev)) == NULL)
|
return -ENODEV;
|
return -ENODEV;
|
#ifdef CONFIG_BLK_DEV_IDECD
|
#ifdef CONFIG_BLK_DEV_IDECD
|
if (drive->media == ide_cdrom)
|
if (drive->media == ide_cdrom)
|
return ide_cdrom_check_media_change (drive);
|
return ide_cdrom_check_media_change (drive);
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
if (drive->media == ide_floppy)
|
if (drive->media == ide_floppy)
|
return idefloppy_media_change (drive);
|
return idefloppy_media_change (drive);
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
if (drive->removable) /* for disks */
|
if (drive->removable) /* for disks */
|
return 1; /* always assume it was changed */
|
return 1; /* always assume it was changed */
|
return 0;
|
return 0;
|
}
|
}
|
|
|
void ide_fixstring (byte *s, const int bytecount, const int byteswap)
|
void ide_fixstring (byte *s, const int bytecount, const int byteswap)
|
{
|
{
|
byte *p = s, *end = &s[bytecount & ~1]; /* bytecount must be even */
|
byte *p = s, *end = &s[bytecount & ~1]; /* bytecount must be even */
|
|
|
if (byteswap) {
|
if (byteswap) {
|
/* convert from big-endian to host byte order */
|
/* convert from big-endian to host byte order */
|
for (p = end ; p != s;) {
|
for (p = end ; p != s;) {
|
unsigned short *pp = (unsigned short *) (p -= 2);
|
unsigned short *pp = (unsigned short *) (p -= 2);
|
*pp = ntohs(*pp);
|
*pp = ntohs(*pp);
|
}
|
}
|
}
|
}
|
|
|
/* strip leading blanks */
|
/* strip leading blanks */
|
while (s != end && *s == ' ')
|
while (s != end && *s == ' ')
|
++s;
|
++s;
|
|
|
/* compress internal blanks and strip trailing blanks */
|
/* compress internal blanks and strip trailing blanks */
|
while (s != end && *s) {
|
while (s != end && *s) {
|
if (*s++ != ' ' || (s != end && *s && *s != ' '))
|
if (*s++ != ' ' || (s != end && *s && *s != ' '))
|
*p++ = *(s-1);
|
*p++ = *(s-1);
|
}
|
}
|
|
|
/* wipe out trailing garbage */
|
/* wipe out trailing garbage */
|
while (p != end)
|
while (p != end)
|
*p++ = '\0';
|
*p++ = '\0';
|
}
|
}
|
|
|
static inline void do_identify (ide_drive_t *drive, byte cmd)
|
static inline void do_identify (ide_drive_t *drive, byte cmd)
|
{
|
{
|
int bswap;
|
int bswap;
|
struct hd_driveid *id;
|
struct hd_driveid *id;
|
unsigned long capacity, check;
|
unsigned long capacity, check;
|
|
|
id = drive->id = kmalloc (SECTOR_WORDS*4, GFP_KERNEL);
|
id = drive->id = kmalloc (SECTOR_WORDS*4, GFP_KERNEL);
|
ide_input_data(drive, id, SECTOR_WORDS);/* read 512 bytes of id info */
|
ide_input_data(drive, id, SECTOR_WORDS);/* read 512 bytes of id info */
|
sti();
|
sti();
|
|
|
#if defined (CONFIG_SCSI_EATA_DMA) || defined (CONFIG_SCSI_EATA_PIO) || defined (CONFIG_SCSI_EATA)
|
#if defined (CONFIG_SCSI_EATA_DMA) || defined (CONFIG_SCSI_EATA_PIO) || defined (CONFIG_SCSI_EATA)
|
/*
|
/*
|
* EATA SCSI controllers do a hardware ATA emulation:
|
* EATA SCSI controllers do a hardware ATA emulation:
|
* Ignore them if there is a driver for them available.
|
* Ignore them if there is a driver for them available.
|
*/
|
*/
|
if ((id->model[0] == 'P' && id->model[1] == 'M')
|
if ((id->model[0] == 'P' && id->model[1] == 'M')
|
|| (id->model[0] == 'S' && id->model[1] == 'K')) {
|
|| (id->model[0] == 'S' && id->model[1] == 'K')) {
|
printk("%s: EATA SCSI HBA %.10s\n", drive->name, id->model);
|
printk("%s: EATA SCSI HBA %.10s\n", drive->name, id->model);
|
drive->present = 0;
|
drive->present = 0;
|
return;
|
return;
|
}
|
}
|
#endif
|
#endif
|
|
|
/*
|
/*
|
* WIN_IDENTIFY returns little-endian info,
|
* WIN_IDENTIFY returns little-endian info,
|
* WIN_PIDENTIFY *usually* returns little-endian info.
|
* WIN_PIDENTIFY *usually* returns little-endian info.
|
*/
|
*/
|
bswap = 1;
|
bswap = 1;
|
if (cmd == WIN_PIDENTIFY) {
|
if (cmd == WIN_PIDENTIFY) {
|
if ((id->model[0] == 'N' && id->model[1] == 'E') /* NEC */
|
if ((id->model[0] == 'N' && id->model[1] == 'E') /* NEC */
|
|| (id->model[0] == 'F' && id->model[1] == 'X') /* Mitsumi */
|
|| (id->model[0] == 'F' && id->model[1] == 'X') /* Mitsumi */
|
|| (id->model[0] == 'P' && id->model[1] == 'i'))/* Pioneer */
|
|| (id->model[0] == 'P' && id->model[1] == 'i'))/* Pioneer */
|
bswap = 0; /* Vertos drives may still be weird */
|
bswap = 0; /* Vertos drives may still be weird */
|
}
|
}
|
ide_fixstring (id->model, sizeof(id->model), bswap);
|
ide_fixstring (id->model, sizeof(id->model), bswap);
|
ide_fixstring (id->fw_rev, sizeof(id->fw_rev), bswap);
|
ide_fixstring (id->fw_rev, sizeof(id->fw_rev), bswap);
|
ide_fixstring (id->serial_no, sizeof(id->serial_no), bswap);
|
ide_fixstring (id->serial_no, sizeof(id->serial_no), bswap);
|
|
|
if (strstr(id->model, "E X A B Y T E N E S T"))
|
if (strstr(id->model, "E X A B Y T E N E S T"))
|
return;
|
return;
|
|
|
#ifdef CONFIG_BLK_DEV_IDEATAPI
|
#ifdef CONFIG_BLK_DEV_IDEATAPI
|
/*
|
/*
|
* Check for an ATAPI device
|
* Check for an ATAPI device
|
*/
|
*/
|
if (cmd == WIN_PIDENTIFY) {
|
if (cmd == WIN_PIDENTIFY) {
|
byte type = (id->config >> 8) & 0x1f;
|
byte type = (id->config >> 8) & 0x1f;
|
printk("%s: %s, ATAPI ", drive->name, id->model);
|
printk("%s: %s, ATAPI ", drive->name, id->model);
|
#ifdef CONFIG_BLK_DEV_PROMISE
|
#ifdef CONFIG_BLK_DEV_PROMISE
|
if (HWIF(drive)->is_promise2) {
|
if (HWIF(drive)->is_promise2) {
|
printk(" -- not supported on 2nd Promise port\n");
|
printk(" -- not supported on 2nd Promise port\n");
|
drive->present = 0;
|
drive->present = 0;
|
return;
|
return;
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
if (!drive->ide_scsi) switch (type) {
|
if (!drive->ide_scsi) switch (type) {
|
case 0:
|
case 0:
|
if (!strstr(id->model, "oppy") && !strstr(id->model, "poyp") && !strstr(id->model, "ZIP"))
|
if (!strstr(id->model, "oppy") && !strstr(id->model, "poyp") && !strstr(id->model, "ZIP"))
|
printk("cdrom or floppy?, assuming ");
|
printk("cdrom or floppy?, assuming ");
|
if (drive->media != ide_cdrom && !strstr(id->model, "CD-ROM")) {
|
if (drive->media != ide_cdrom && !strstr(id->model, "CD-ROM")) {
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
#ifdef CONFIG_BLK_DEV_IDEFLOPPY
|
printk("FLOPPY drive\n");
|
printk("FLOPPY drive\n");
|
drive->media = ide_floppy;
|
drive->media = ide_floppy;
|
if (idefloppy_identify_device(drive, id))
|
if (idefloppy_identify_device(drive, id))
|
drive->present = 1;
|
drive->present = 1;
|
return;
|
return;
|
#else
|
#else
|
printk("FLOPPY ");
|
printk("FLOPPY ");
|
break;
|
break;
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
#endif /* CONFIG_BLK_DEV_IDEFLOPPY */
|
}
|
}
|
/* Early cdrom models used zero */
|
/* Early cdrom models used zero */
|
case 5:
|
case 5:
|
#ifdef CONFIG_BLK_DEV_IDECD
|
#ifdef CONFIG_BLK_DEV_IDECD
|
printk ("CDROM drive\n");
|
printk ("CDROM drive\n");
|
drive->media = ide_cdrom;
|
drive->media = ide_cdrom;
|
drive->present = 1;
|
drive->present = 1;
|
drive->removable = 1;
|
drive->removable = 1;
|
return;
|
return;
|
#else
|
#else
|
printk ("CDROM ");
|
printk ("CDROM ");
|
break;
|
break;
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
case 1:
|
case 1:
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
printk ("TAPE drive");
|
printk ("TAPE drive");
|
if (idetape_identify_device (drive,id)) {
|
if (idetape_identify_device (drive,id)) {
|
drive->media = ide_tape;
|
drive->media = ide_tape;
|
drive->present = 1;
|
drive->present = 1;
|
drive->removable = 1;
|
drive->removable = 1;
|
if (drive->autotune != 2 && HWIF(drive)->dmaproc != NULL) {
|
if (drive->autotune != 2 && HWIF(drive)->dmaproc != NULL) {
|
if (!HWIF(drive)->dmaproc(ide_dma_check, drive))
|
if (!HWIF(drive)->dmaproc(ide_dma_check, drive))
|
printk(", DMA");
|
printk(", DMA");
|
}
|
}
|
printk("\n");
|
printk("\n");
|
}
|
}
|
else {
|
else {
|
drive->present = 0;
|
drive->present = 0;
|
printk ("\nide-tape: the tape is not supported by this version of the driver\n");
|
printk ("\nide-tape: the tape is not supported by this version of the driver\n");
|
}
|
}
|
return;
|
return;
|
#else
|
#else
|
printk ("TAPE ");
|
printk ("TAPE ");
|
break;
|
break;
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
default:
|
default:
|
drive->present = 0;
|
drive->present = 0;
|
printk("Type %d - Unknown device\n", type);
|
printk("Type %d - Unknown device\n", type);
|
return;
|
return;
|
}
|
}
|
#ifdef CONFIG_BLK_DEV_IDESCSI
|
#ifdef CONFIG_BLK_DEV_IDESCSI
|
printk("drive - enabling SCSI emulation\n");
|
printk("drive - enabling SCSI emulation\n");
|
drive->media = ide_scsi;
|
drive->media = ide_scsi;
|
drive->present = 1;
|
drive->present = 1;
|
idescsi_setup(drive);
|
idescsi_setup(drive);
|
#else
|
#else
|
drive->present = 0;
|
drive->present = 0;
|
printk("- not supported by this kernel\n");
|
printk("- not supported by this kernel\n");
|
#endif /* CONFIG_BLK_DEV_IDESCSI */
|
#endif /* CONFIG_BLK_DEV_IDESCSI */
|
return;
|
return;
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_IDEATAPI */
|
#endif /* CONFIG_BLK_DEV_IDEATAPI */
|
|
|
/* check for removable disks (eg. SYQUEST), ignore 'WD' drives */
|
/* check for removable disks (eg. SYQUEST), ignore 'WD' drives */
|
if (id->config & (1<<7)) { /* removable disk ? */
|
if (id->config & (1<<7)) { /* removable disk ? */
|
if (id->model[0] != 'W' || id->model[1] != 'D')
|
if (id->model[0] != 'W' || id->model[1] != 'D')
|
drive->removable = 1;
|
drive->removable = 1;
|
}
|
}
|
|
|
/* SunDisk drives: treat as non-removable, force one unit */
|
/* SunDisk drives: treat as non-removable, force one unit */
|
if (id->model[0] == 'S' && id->model[1] == 'u') {
|
if (id->model[0] == 'S' && id->model[1] == 'u') {
|
drive->removable = 0;
|
drive->removable = 0;
|
if (drive->select.all & (1<<4)) {
|
if (drive->select.all & (1<<4)) {
|
drive->present = 0;
|
drive->present = 0;
|
return;
|
return;
|
}
|
}
|
}
|
}
|
|
|
drive->media = ide_disk;
|
drive->media = ide_disk;
|
/* Extract geometry if we did not already have one for the drive */
|
/* Extract geometry if we did not already have one for the drive */
|
if (!drive->present) {
|
if (!drive->present) {
|
drive->present = 1;
|
drive->present = 1;
|
drive->cyl = drive->bios_cyl = id->cyls;
|
drive->cyl = drive->bios_cyl = id->cyls;
|
drive->head = drive->bios_head = id->heads;
|
drive->head = drive->bios_head = id->heads;
|
drive->sect = drive->bios_sect = id->sectors;
|
drive->sect = drive->bios_sect = id->sectors;
|
}
|
}
|
/* Handle logical geometry translation by the drive */
|
/* Handle logical geometry translation by the drive */
|
if ((id->field_valid & 1) && id->cur_cyls && id->cur_heads
|
if ((id->field_valid & 1) && id->cur_cyls && id->cur_heads
|
&& (id->cur_heads <= 16) && id->cur_sectors)
|
&& (id->cur_heads <= 16) && id->cur_sectors)
|
{
|
{
|
/*
|
/*
|
* Extract the physical drive geometry for our use.
|
* Extract the physical drive geometry for our use.
|
* Note that we purposely do *not* update the bios info.
|
* Note that we purposely do *not* update the bios info.
|
* This way, programs that use it (like fdisk) will
|
* This way, programs that use it (like fdisk) will
|
* still have the same logical view as the BIOS does,
|
* still have the same logical view as the BIOS does,
|
* which keeps the partition table from being screwed.
|
* which keeps the partition table from being screwed.
|
*
|
*
|
* An exception to this is the cylinder count,
|
* An exception to this is the cylinder count,
|
* which we reexamine later on to correct for 1024 limitations.
|
* which we reexamine later on to correct for 1024 limitations.
|
*/
|
*/
|
drive->cyl = id->cur_cyls;
|
drive->cyl = id->cur_cyls;
|
drive->head = id->cur_heads;
|
drive->head = id->cur_heads;
|
drive->sect = id->cur_sectors;
|
drive->sect = id->cur_sectors;
|
|
|
/* check for word-swapped "capacity" field in id information */
|
/* check for word-swapped "capacity" field in id information */
|
capacity = drive->cyl * drive->head * drive->sect;
|
capacity = drive->cyl * drive->head * drive->sect;
|
check = (id->cur_capacity0 << 16) | id->cur_capacity1;
|
check = (id->cur_capacity0 << 16) | id->cur_capacity1;
|
if (check == capacity) { /* was it swapped? */
|
if (check == capacity) { /* was it swapped? */
|
/* yes, bring it into little-endian order: */
|
/* yes, bring it into little-endian order: */
|
id->cur_capacity0 = (capacity >> 0) & 0xffff;
|
id->cur_capacity0 = (capacity >> 0) & 0xffff;
|
id->cur_capacity1 = (capacity >> 16) & 0xffff;
|
id->cur_capacity1 = (capacity >> 16) & 0xffff;
|
}
|
}
|
}
|
}
|
/* Use physical geometry if what we have still makes no sense */
|
/* Use physical geometry if what we have still makes no sense */
|
if ((!drive->head || drive->head > 16) && id->heads && id->heads <= 16) {
|
if ((!drive->head || drive->head > 16) && id->heads && id->heads <= 16) {
|
drive->cyl = id->cyls;
|
drive->cyl = id->cyls;
|
drive->head = id->heads;
|
drive->head = id->heads;
|
drive->sect = id->sectors;
|
drive->sect = id->sectors;
|
}
|
}
|
|
|
/* calculate drive capacity, and select LBA if possible */
|
/* calculate drive capacity, and select LBA if possible */
|
(void) current_capacity (drive);
|
(void) current_capacity (drive);
|
|
|
/* Correct the number of cyls if the bios value is too small */
|
/* Correct the number of cyls if the bios value is too small */
|
if (drive->sect == drive->bios_sect && drive->head == drive->bios_head) {
|
if (drive->sect == drive->bios_sect && drive->head == drive->bios_head) {
|
if (drive->cyl > drive->bios_cyl)
|
if (drive->cyl > drive->bios_cyl)
|
drive->bios_cyl = drive->cyl;
|
drive->bios_cyl = drive->cyl;
|
}
|
}
|
|
|
if (!strncmp(id->model, "BMI ", 4) &&
|
if (!strncmp(id->model, "BMI ", 4) &&
|
strstr(id->model, " ENHANCED IDE ") &&
|
strstr(id->model, " ENHANCED IDE ") &&
|
drive->select.b.lba)
|
drive->select.b.lba)
|
drive->no_geom = 1;
|
drive->no_geom = 1;
|
|
|
printk ("%s: %.40s, %ldMB w/%dkB Cache, CHS=%d/%d/%d",
|
printk ("%s: %.40s, %ldMB w/%dkB Cache, CHS=%d/%d/%d",
|
drive->name, id->model, current_capacity(drive)/2048L, id->buf_size/2,
|
drive->name, id->model, current_capacity(drive)/2048L, id->buf_size/2,
|
drive->bios_cyl, drive->bios_head, drive->bios_sect);
|
drive->bios_cyl, drive->bios_head, drive->bios_sect);
|
|
|
drive->mult_count = 0;
|
drive->mult_count = 0;
|
if (id->max_multsect) {
|
if (id->max_multsect) {
|
drive->mult_req = INITIAL_MULT_COUNT;
|
drive->mult_req = INITIAL_MULT_COUNT;
|
if (drive->mult_req > id->max_multsect)
|
if (drive->mult_req > id->max_multsect)
|
drive->mult_req = id->max_multsect;
|
drive->mult_req = id->max_multsect;
|
if (drive->mult_req || ((id->multsect_valid & 1) && id->multsect))
|
if (drive->mult_req || ((id->multsect_valid & 1) && id->multsect))
|
drive->special.b.set_multmode = 1;
|
drive->special.b.set_multmode = 1;
|
}
|
}
|
if (drive->autotune != 2 && HWIF(drive)->dmaproc != NULL) {
|
if (drive->autotune != 2 && HWIF(drive)->dmaproc != NULL) {
|
if (!(HWIF(drive)->dmaproc(ide_dma_check, drive))) {
|
if (!(HWIF(drive)->dmaproc(ide_dma_check, drive))) {
|
if ((id->field_valid & 4) && (id->dma_ultra & (id->dma_ultra >> 8) & 7))
|
if ((id->field_valid & 4) && (id->dma_ultra & (id->dma_ultra >> 8) & 7))
|
printk(", UDMA");
|
printk(", UDMA");
|
else
|
else
|
printk(", DMA");
|
printk(", DMA");
|
}
|
}
|
}
|
}
|
printk("\n");
|
printk("\n");
|
}
|
}
|
|
|
/*
|
/*
|
* Delay for *at least* 50ms. As we don't know how much time is left
|
* Delay for *at least* 50ms. As we don't know how much time is left
|
* until the next tick occurs, we wait an extra tick to be safe.
|
* until the next tick occurs, we wait an extra tick to be safe.
|
* This is used only during the probing/polling for drives at boot time.
|
* This is used only during the probing/polling for drives at boot time.
|
*/
|
*/
|
static void delay_50ms (void)
|
static void delay_50ms (void)
|
{
|
{
|
unsigned long timer = jiffies + ((HZ + 19)/20) + 1;
|
unsigned long timer = jiffies + ((HZ + 19)/20) + 1;
|
while (timer > jiffies);
|
while (timer > jiffies);
|
}
|
}
|
|
|
/*
|
/*
|
* try_to_identify() sends an ATA(PI) IDENTIFY request to a drive
|
* try_to_identify() sends an ATA(PI) IDENTIFY request to a drive
|
* and waits for a response. It also monitors irqs while this is
|
* and waits for a response. It also monitors irqs while this is
|
* happening, in hope of automatically determining which one is
|
* happening, in hope of automatically determining which one is
|
* being used by the interface.
|
* being used by the interface.
|
*
|
*
|
* Returns: 0 device was identified
|
* Returns: 0 device was identified
|
* 1 device timed-out (no response to identify request)
|
* 1 device timed-out (no response to identify request)
|
* 2 device aborted the command (refused to identify itself)
|
* 2 device aborted the command (refused to identify itself)
|
*/
|
*/
|
static int try_to_identify (ide_drive_t *drive, byte cmd)
|
static int try_to_identify (ide_drive_t *drive, byte cmd)
|
{
|
{
|
int hd_status, rc;
|
int hd_status, rc;
|
unsigned long timeout;
|
unsigned long timeout;
|
unsigned long irqs_on = 0;
|
unsigned long irqs_on = 0;
|
int irq_off;
|
int irq_off;
|
|
|
if (!HWIF(drive)->irq) { /* already got an IRQ? */
|
if (!HWIF(drive)->irq) { /* already got an IRQ? */
|
probe_irq_off(probe_irq_on()); /* clear dangling irqs */
|
probe_irq_off(probe_irq_on()); /* clear dangling irqs */
|
irqs_on = probe_irq_on(); /* start monitoring irqs */
|
irqs_on = probe_irq_on(); /* start monitoring irqs */
|
OUT_BYTE(drive->ctl,IDE_CONTROL_REG); /* enable device irq */
|
OUT_BYTE(drive->ctl,IDE_CONTROL_REG); /* enable device irq */
|
}
|
}
|
|
|
delay_50ms(); /* take a deep breath */
|
delay_50ms(); /* take a deep breath */
|
if ((IN_BYTE(IDE_ALTSTATUS_REG) ^ IN_BYTE(IDE_STATUS_REG)) & ~INDEX_STAT) {
|
if ((IN_BYTE(IDE_ALTSTATUS_REG) ^ IN_BYTE(IDE_STATUS_REG)) & ~INDEX_STAT) {
|
printk("%s: probing with STATUS instead of ALTSTATUS\n", drive->name);
|
printk("%s: probing with STATUS instead of ALTSTATUS\n", drive->name);
|
hd_status = IDE_STATUS_REG; /* ancient Seagate drives */
|
hd_status = IDE_STATUS_REG; /* ancient Seagate drives */
|
} else
|
} else
|
hd_status = IDE_ALTSTATUS_REG; /* use non-intrusive polling */
|
hd_status = IDE_ALTSTATUS_REG; /* use non-intrusive polling */
|
|
|
#if CONFIG_BLK_DEV_PROMISE
|
#if CONFIG_BLK_DEV_PROMISE
|
if (IS_PROMISE_DRIVE) {
|
if (IS_PROMISE_DRIVE) {
|
if (promise_cmd(drive,PROMISE_IDENTIFY)) {
|
if (promise_cmd(drive,PROMISE_IDENTIFY)) {
|
if (irqs_on)
|
if (irqs_on)
|
(void) probe_irq_off(irqs_on);
|
(void) probe_irq_off(irqs_on);
|
return 1;
|
return 1;
|
}
|
}
|
} else
|
} else
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
OUT_BYTE(cmd,IDE_COMMAND_REG); /* ask drive for ID */
|
OUT_BYTE(cmd,IDE_COMMAND_REG); /* ask drive for ID */
|
timeout = ((cmd == WIN_IDENTIFY) ? WAIT_WORSTCASE : WAIT_PIDENTIFY) / 2;
|
timeout = ((cmd == WIN_IDENTIFY) ? WAIT_WORSTCASE : WAIT_PIDENTIFY) / 2;
|
timeout += jiffies;
|
timeout += jiffies;
|
do {
|
do {
|
if (jiffies > timeout) {
|
if (jiffies > timeout) {
|
if (irqs_on)
|
if (irqs_on)
|
(void) probe_irq_off(irqs_on);
|
(void) probe_irq_off(irqs_on);
|
return 1; /* drive timed-out */
|
return 1; /* drive timed-out */
|
}
|
}
|
delay_50ms(); /* give drive a breather */
|
delay_50ms(); /* give drive a breather */
|
} while (IN_BYTE(hd_status) & BUSY_STAT);
|
} while (IN_BYTE(hd_status) & BUSY_STAT);
|
|
|
delay_50ms(); /* wait for IRQ and DRQ_STAT */
|
delay_50ms(); /* wait for IRQ and DRQ_STAT */
|
if (OK_STAT(GET_STAT(),DRQ_STAT,BAD_R_STAT)) {
|
if (OK_STAT(GET_STAT(),DRQ_STAT,BAD_R_STAT)) {
|
unsigned long flags;
|
unsigned long flags;
|
save_flags(flags);
|
save_flags(flags);
|
cli(); /* some systems need this */
|
cli(); /* some systems need this */
|
do_identify(drive, cmd); /* drive returned ID */
|
do_identify(drive, cmd); /* drive returned ID */
|
rc = 0; /* drive responded with ID */
|
rc = 0; /* drive responded with ID */
|
(void) GET_STAT(); /* clear drive IRQ */
|
(void) GET_STAT(); /* clear drive IRQ */
|
restore_flags(flags);
|
restore_flags(flags);
|
} else
|
} else
|
rc = 2; /* drive refused ID */
|
rc = 2; /* drive refused ID */
|
if (!HWIF(drive)->irq) {
|
if (!HWIF(drive)->irq) {
|
irq_off = probe_irq_off(irqs_on); /* get our irq number */
|
irq_off = probe_irq_off(irqs_on); /* get our irq number */
|
if (irq_off > 0) {
|
if (irq_off > 0) {
|
HWIF(drive)->irq = irq_off; /* save it for later */
|
HWIF(drive)->irq = irq_off; /* save it for later */
|
irqs_on = probe_irq_on();
|
irqs_on = probe_irq_on();
|
OUT_BYTE(drive->ctl|2,IDE_CONTROL_REG); /* mask device irq */
|
OUT_BYTE(drive->ctl|2,IDE_CONTROL_REG); /* mask device irq */
|
udelay(5);
|
udelay(5);
|
(void) probe_irq_off(irqs_on);
|
(void) probe_irq_off(irqs_on);
|
(void) probe_irq_off(probe_irq_on()); /* clear self-inflicted irq */
|
(void) probe_irq_off(probe_irq_on()); /* clear self-inflicted irq */
|
(void) GET_STAT(); /* clear drive IRQ */
|
(void) GET_STAT(); /* clear drive IRQ */
|
|
|
} else { /* Mmmm.. multiple IRQs.. don't know which was ours */
|
} else { /* Mmmm.. multiple IRQs.. don't know which was ours */
|
printk("%s: IRQ probe failed (%d)\n", drive->name, irq_off);
|
printk("%s: IRQ probe failed (%d)\n", drive->name, irq_off);
|
#ifdef CONFIG_BLK_DEV_CMD640
|
#ifdef CONFIG_BLK_DEV_CMD640
|
#ifdef CMD640_DUMP_REGS
|
#ifdef CMD640_DUMP_REGS
|
if (HWIF(drive)->chipset == ide_cmd640) {
|
if (HWIF(drive)->chipset == ide_cmd640) {
|
printk("%s: Hmmm.. probably a driver problem.\n", drive->name);
|
printk("%s: Hmmm.. probably a driver problem.\n", drive->name);
|
CMD640_DUMP_REGS;
|
CMD640_DUMP_REGS;
|
}
|
}
|
#endif /* CMD640_DUMP_REGS */
|
#endif /* CMD640_DUMP_REGS */
|
#endif /* CONFIG_BLK_DEV_CMD640 */
|
#endif /* CONFIG_BLK_DEV_CMD640 */
|
}
|
}
|
}
|
}
|
return rc;
|
return rc;
|
}
|
}
|
|
|
/*
|
/*
|
* do_probe() has the difficult job of finding a drive if it exists,
|
* do_probe() has the difficult job of finding a drive if it exists,
|
* without getting hung up if it doesn't exist, without trampling on
|
* without getting hung up if it doesn't exist, without trampling on
|
* ethernet cards, and without leaving any IRQs dangling to haunt us later.
|
* ethernet cards, and without leaving any IRQs dangling to haunt us later.
|
*
|
*
|
* If a drive is "known" to exist (from CMOS or kernel parameters),
|
* If a drive is "known" to exist (from CMOS or kernel parameters),
|
* but does not respond right away, the probe will "hang in there"
|
* but does not respond right away, the probe will "hang in there"
|
* for the maximum wait time (about 30 seconds), otherwise it will
|
* for the maximum wait time (about 30 seconds), otherwise it will
|
* exit much more quickly.
|
* exit much more quickly.
|
*
|
*
|
* Returns: 0 device was identified
|
* Returns: 0 device was identified
|
* 1 device timed-out (no response to identify request)
|
* 1 device timed-out (no response to identify request)
|
* 2 device aborted the command (refused to identify itself)
|
* 2 device aborted the command (refused to identify itself)
|
* 3 bad status from device (possible for ATAPI drives)
|
* 3 bad status from device (possible for ATAPI drives)
|
* 4 probe was not attempted because failure was obvious
|
* 4 probe was not attempted because failure was obvious
|
*/
|
*/
|
static int do_probe (ide_drive_t *drive, byte cmd)
|
static int do_probe (ide_drive_t *drive, byte cmd)
|
{
|
{
|
int rc;
|
int rc;
|
ide_hwif_t *hwif = HWIF(drive);
|
ide_hwif_t *hwif = HWIF(drive);
|
unsigned long timeout;
|
unsigned long timeout;
|
#ifdef CONFIG_BLK_DEV_IDEATAPI
|
#ifdef CONFIG_BLK_DEV_IDEATAPI
|
if (drive->present) { /* avoid waiting for inappropriate probes */
|
if (drive->present) { /* avoid waiting for inappropriate probes */
|
if ((drive->media != ide_disk) && (cmd == WIN_IDENTIFY))
|
if ((drive->media != ide_disk) && (cmd == WIN_IDENTIFY))
|
return 4;
|
return 4;
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_IDEATAPI */
|
#endif /* CONFIG_BLK_DEV_IDEATAPI */
|
#ifdef DEBUG
|
#ifdef DEBUG
|
printk("probing for %s: present=%d, media=%d, probetype=%s\n",
|
printk("probing for %s: present=%d, media=%d, probetype=%s\n",
|
drive->name, drive->present, drive->media,
|
drive->name, drive->present, drive->media,
|
(cmd == WIN_IDENTIFY) ? "ATA" : "ATAPI");
|
(cmd == WIN_IDENTIFY) ? "ATA" : "ATAPI");
|
#endif
|
#endif
|
SELECT_DRIVE(hwif,drive);
|
SELECT_DRIVE(hwif,drive);
|
delay_50ms();
|
delay_50ms();
|
if (IN_BYTE(IDE_SELECT_REG) != drive->select.all && !drive->present) {
|
if (IN_BYTE(IDE_SELECT_REG) != drive->select.all && !drive->present) {
|
OUT_BYTE(0xa0,IDE_SELECT_REG); /* exit with drive0 selected */
|
OUT_BYTE(0xa0,IDE_SELECT_REG); /* exit with drive0 selected */
|
delay_50ms(); /* allow BUSY_STAT to assert & clear */
|
delay_50ms(); /* allow BUSY_STAT to assert & clear */
|
return 3; /* no i/f present: avoid killing ethernet cards */
|
return 3; /* no i/f present: avoid killing ethernet cards */
|
}
|
}
|
|
|
if (OK_STAT(GET_STAT(),READY_STAT,BUSY_STAT)
|
if (OK_STAT(GET_STAT(),READY_STAT,BUSY_STAT)
|
|| drive->present || cmd == WIN_PIDENTIFY)
|
|| drive->present || cmd == WIN_PIDENTIFY)
|
{
|
{
|
if ((rc = try_to_identify(drive,cmd))) /* send cmd and wait */
|
if ((rc = try_to_identify(drive,cmd))) /* send cmd and wait */
|
rc = try_to_identify(drive,cmd); /* failed: try again */
|
rc = try_to_identify(drive,cmd); /* failed: try again */
|
if (rc == 1 && cmd == WIN_PIDENTIFY && drive->autotune != 2) {
|
if (rc == 1 && cmd == WIN_PIDENTIFY && drive->autotune != 2) {
|
printk("%s: no response (status = 0x%02x), resetting drive\n", drive->name, GET_STAT());
|
printk("%s: no response (status = 0x%02x), resetting drive\n", drive->name, GET_STAT());
|
delay_50ms();
|
delay_50ms();
|
OUT_BYTE (drive->select.all, IDE_SELECT_REG);
|
OUT_BYTE (drive->select.all, IDE_SELECT_REG);
|
delay_50ms();
|
delay_50ms();
|
OUT_BYTE(WIN_SRST, IDE_COMMAND_REG);
|
OUT_BYTE(WIN_SRST, IDE_COMMAND_REG);
|
timeout = jiffies;
|
timeout = jiffies;
|
while ((GET_STAT() & BUSY_STAT) && jiffies < timeout + WAIT_WORSTCASE)
|
while ((GET_STAT() & BUSY_STAT) && jiffies < timeout + WAIT_WORSTCASE)
|
delay_50ms();
|
delay_50ms();
|
rc = try_to_identify(drive, cmd);
|
rc = try_to_identify(drive, cmd);
|
}
|
}
|
if (rc == 1)
|
if (rc == 1)
|
printk("%s: no response (status = 0x%02x)\n", drive->name, GET_STAT());
|
printk("%s: no response (status = 0x%02x)\n", drive->name, GET_STAT());
|
(void) GET_STAT(); /* ensure drive irq is clear */
|
(void) GET_STAT(); /* ensure drive irq is clear */
|
} else {
|
} else {
|
rc = 3; /* not present or maybe ATAPI */
|
rc = 3; /* not present or maybe ATAPI */
|
}
|
}
|
if (drive->select.b.unit != 0) {
|
if (drive->select.b.unit != 0) {
|
OUT_BYTE(0xa0,IDE_SELECT_REG); /* exit with drive0 selected */
|
OUT_BYTE(0xa0,IDE_SELECT_REG); /* exit with drive0 selected */
|
delay_50ms();
|
delay_50ms();
|
(void) GET_STAT(); /* ensure drive irq is clear */
|
(void) GET_STAT(); /* ensure drive irq is clear */
|
}
|
}
|
return rc;
|
return rc;
|
}
|
}
|
|
|
static void enable_nest (ide_drive_t *drive)
|
static void enable_nest (ide_drive_t *drive)
|
{
|
{
|
unsigned long timeout;
|
unsigned long timeout;
|
|
|
printk("%s: enabling %s -- ", HWIF(drive)->name, drive->id->model);
|
printk("%s: enabling %s -- ", HWIF(drive)->name, drive->id->model);
|
SELECT_DRIVE(HWIF(drive), drive);
|
SELECT_DRIVE(HWIF(drive), drive);
|
delay_50ms();
|
delay_50ms();
|
OUT_BYTE(EXABYTE_ENABLE_NEST, IDE_COMMAND_REG);
|
OUT_BYTE(EXABYTE_ENABLE_NEST, IDE_COMMAND_REG);
|
timeout = jiffies + WAIT_WORSTCASE;
|
timeout = jiffies + WAIT_WORSTCASE;
|
do {
|
do {
|
if (jiffies > timeout) {
|
if (jiffies > timeout) {
|
printk("failed (timeout)\n");
|
printk("failed (timeout)\n");
|
return;
|
return;
|
}
|
}
|
delay_50ms();
|
delay_50ms();
|
} while (GET_STAT() & BUSY_STAT);
|
} while (GET_STAT() & BUSY_STAT);
|
delay_50ms();
|
delay_50ms();
|
if (!OK_STAT(GET_STAT(), 0, BAD_STAT))
|
if (!OK_STAT(GET_STAT(), 0, BAD_STAT))
|
printk("failed (status = 0x%02x)\n", GET_STAT());
|
printk("failed (status = 0x%02x)\n", GET_STAT());
|
else
|
else
|
printk("success\n");
|
printk("success\n");
|
if (do_probe(drive, WIN_IDENTIFY) >= 2) { /* if !(success||timed-out) */
|
if (do_probe(drive, WIN_IDENTIFY) >= 2) { /* if !(success||timed-out) */
|
#ifdef CONFIG_BLK_DEV_IDEATAPI
|
#ifdef CONFIG_BLK_DEV_IDEATAPI
|
(void) do_probe(drive, WIN_PIDENTIFY); /* look for ATAPI device */
|
(void) do_probe(drive, WIN_PIDENTIFY); /* look for ATAPI device */
|
#endif /* CONFIG_BLK_DEV_IDEATAPI */
|
#endif /* CONFIG_BLK_DEV_IDEATAPI */
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* probe_for_drive() tests for existence of a given drive using do_probe().
|
* probe_for_drive() tests for existence of a given drive using do_probe().
|
*
|
*
|
* Returns: 0 no device was found
|
* Returns: 0 no device was found
|
* 1 device was found (note: drive->present might still be 0)
|
* 1 device was found (note: drive->present might still be 0)
|
*/
|
*/
|
static inline byte probe_for_drive (ide_drive_t *drive)
|
static inline byte probe_for_drive (ide_drive_t *drive)
|
{
|
{
|
if (drive->noprobe) /* skip probing? */
|
if (drive->noprobe) /* skip probing? */
|
return drive->present;
|
return drive->present;
|
if (do_probe(drive, WIN_IDENTIFY) >= 2) { /* if !(success||timed-out) */
|
if (do_probe(drive, WIN_IDENTIFY) >= 2) { /* if !(success||timed-out) */
|
#ifdef CONFIG_BLK_DEV_IDEATAPI
|
#ifdef CONFIG_BLK_DEV_IDEATAPI
|
(void) do_probe(drive, WIN_PIDENTIFY); /* look for ATAPI device */
|
(void) do_probe(drive, WIN_PIDENTIFY); /* look for ATAPI device */
|
#endif /* CONFIG_BLK_DEV_IDEATAPI */
|
#endif /* CONFIG_BLK_DEV_IDEATAPI */
|
}
|
}
|
if (drive->id && strstr(drive->id->model, "E X A B Y T E N E S T"))
|
if (drive->id && strstr(drive->id->model, "E X A B Y T E N E S T"))
|
enable_nest(drive);
|
enable_nest(drive);
|
if (!drive->present)
|
if (!drive->present)
|
return 0; /* drive not found */
|
return 0; /* drive not found */
|
if (drive->id == NULL) { /* identification failed? */
|
if (drive->id == NULL) { /* identification failed? */
|
if (drive->media == ide_disk) {
|
if (drive->media == ide_disk) {
|
printk ("%s: non-IDE drive, CHS=%d/%d/%d\n",
|
printk ("%s: non-IDE drive, CHS=%d/%d/%d\n",
|
drive->name, drive->cyl, drive->head, drive->sect);
|
drive->name, drive->cyl, drive->head, drive->sect);
|
}
|
}
|
#ifdef CONFIG_BLK_DEV_IDECD
|
#ifdef CONFIG_BLK_DEV_IDECD
|
else if (drive->media == ide_cdrom) {
|
else if (drive->media == ide_cdrom) {
|
printk("%s: ATAPI cdrom (?)\n", drive->name);
|
printk("%s: ATAPI cdrom (?)\n", drive->name);
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
else {
|
else {
|
drive->present = 0; /* nuke it */
|
drive->present = 0; /* nuke it */
|
}
|
}
|
}
|
}
|
return 1; /* drive was found */
|
return 1; /* drive was found */
|
}
|
}
|
|
|
/*
|
/*
|
* We query CMOS about hard disks : it could be that we have a SCSI/ESDI/etc
|
* We query CMOS about hard disks : it could be that we have a SCSI/ESDI/etc
|
* controller that is BIOS compatible with ST-506, and thus showing up in our
|
* controller that is BIOS compatible with ST-506, and thus showing up in our
|
* BIOS table, but not register compatible, and therefore not present in CMOS.
|
* BIOS table, but not register compatible, and therefore not present in CMOS.
|
*
|
*
|
* Furthermore, we will assume that our ST-506 drives <if any> are the primary
|
* Furthermore, we will assume that our ST-506 drives <if any> are the primary
|
* drives in the system -- the ones reflected as drive 1 or 2. The first
|
* drives in the system -- the ones reflected as drive 1 or 2. The first
|
* drive is stored in the high nibble of CMOS byte 0x12, the second in the low
|
* drive is stored in the high nibble of CMOS byte 0x12, the second in the low
|
* nibble. This will be either a 4 bit drive type or 0xf indicating use byte
|
* nibble. This will be either a 4 bit drive type or 0xf indicating use byte
|
* 0x19 for an 8 bit type, drive 1, 0x1a for drive 2 in CMOS. A non-zero value
|
* 0x19 for an 8 bit type, drive 1, 0x1a for drive 2 in CMOS. A non-zero value
|
* means we have an AT controller hard disk for that drive.
|
* means we have an AT controller hard disk for that drive.
|
*
|
*
|
* Of course, there is no guarantee that either drive is actually on the
|
* Of course, there is no guarantee that either drive is actually on the
|
* "primary" IDE interface, but we don't bother trying to sort that out here.
|
* "primary" IDE interface, but we don't bother trying to sort that out here.
|
* If a drive is not actually on the primary interface, then these parameters
|
* If a drive is not actually on the primary interface, then these parameters
|
* will be ignored. This results in the user having to supply the logical
|
* will be ignored. This results in the user having to supply the logical
|
* drive geometry as a boot parameter for each drive not on the primary i/f.
|
* drive geometry as a boot parameter for each drive not on the primary i/f.
|
*
|
*
|
* The only "perfect" way to handle this would be to modify the setup.[cS] code
|
* The only "perfect" way to handle this would be to modify the setup.[cS] code
|
* to do BIOS calls Int13h/Fn08h and Int13h/Fn48h to get all of the drive info
|
* to do BIOS calls Int13h/Fn08h and Int13h/Fn48h to get all of the drive info
|
* for us during initialization. I have the necessary docs -- any takers? -ml
|
* for us during initialization. I have the necessary docs -- any takers? -ml
|
*/
|
*/
|
static void probe_cmos_for_drives (ide_hwif_t *hwif)
|
static void probe_cmos_for_drives (ide_hwif_t *hwif)
|
{
|
{
|
#ifdef __i386__
|
#ifdef __i386__
|
extern struct drive_info_struct drive_info;
|
extern struct drive_info_struct drive_info;
|
byte cmos_disks, *BIOS = (byte *) &drive_info;
|
byte cmos_disks, *BIOS = (byte *) &drive_info;
|
int unit;
|
int unit;
|
|
|
#ifdef CONFIG_BLK_DEV_PROMISE
|
#ifdef CONFIG_BLK_DEV_PROMISE
|
if (hwif->is_promise2)
|
if (hwif->is_promise2)
|
return;
|
return;
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
outb_p(0x12,0x70); /* specify CMOS address 0x12 */
|
outb_p(0x12,0x70); /* specify CMOS address 0x12 */
|
cmos_disks = inb_p(0x71); /* read the data from 0x12 */
|
cmos_disks = inb_p(0x71); /* read the data from 0x12 */
|
/* Extract drive geometry from CMOS+BIOS if not already setup */
|
/* Extract drive geometry from CMOS+BIOS if not already setup */
|
for (unit = 0; unit < MAX_DRIVES; ++unit) {
|
for (unit = 0; unit < MAX_DRIVES; ++unit) {
|
ide_drive_t *drive = &hwif->drives[unit];
|
ide_drive_t *drive = &hwif->drives[unit];
|
if ((cmos_disks & (0xf0 >> (unit*4))) && !drive->present && !drive->nobios) {
|
if ((cmos_disks & (0xf0 >> (unit*4))) && !drive->present && !drive->nobios) {
|
drive->cyl = drive->bios_cyl = *(unsigned short *)BIOS;
|
drive->cyl = drive->bios_cyl = *(unsigned short *)BIOS;
|
drive->head = drive->bios_head = *(BIOS+2);
|
drive->head = drive->bios_head = *(BIOS+2);
|
drive->sect = drive->bios_sect = *(BIOS+14);
|
drive->sect = drive->bios_sect = *(BIOS+14);
|
drive->ctl = *(BIOS+8);
|
drive->ctl = *(BIOS+8);
|
drive->present = 1;
|
drive->present = 1;
|
}
|
}
|
BIOS += 16;
|
BIOS += 16;
|
}
|
}
|
#endif
|
#endif
|
}
|
}
|
|
|
/*
|
/*
|
* This routine only knows how to look for drive units 0 and 1
|
* This routine only knows how to look for drive units 0 and 1
|
* on an interface, so any setting of MAX_DRIVES > 2 won't work here.
|
* on an interface, so any setting of MAX_DRIVES > 2 won't work here.
|
*/
|
*/
|
static void probe_hwif (ide_hwif_t *hwif)
|
static void probe_hwif (ide_hwif_t *hwif)
|
{
|
{
|
unsigned int unit;
|
unsigned int unit;
|
|
|
if (hwif->noprobe)
|
if (hwif->noprobe)
|
return;
|
return;
|
if (hwif->io.io_base == HD_DATA)
|
if (hwif->io.io_base == HD_DATA)
|
probe_cmos_for_drives (hwif);
|
probe_cmos_for_drives (hwif);
|
#if CONFIG_BLK_DEV_PROMISE
|
#if CONFIG_BLK_DEV_PROMISE
|
if (!hwif->is_promise2 &&
|
if (!hwif->is_promise2 &&
|
(check_region(hwif->io_base,8) || check_region(hwif->ctl_port,1))) {
|
(check_region(hwif->io_base,8) || check_region(hwif->ctl_port,1))) {
|
#else
|
#else
|
if (check_region(hwif->io.io_base,8) || check_region(hwif->io.ctl_port,1)) {
|
if (check_region(hwif->io.io_base,8) || check_region(hwif->io.ctl_port,1)) {
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
int msgout = 0;
|
int msgout = 0;
|
for (unit = 0; unit < MAX_DRIVES; ++unit) {
|
for (unit = 0; unit < MAX_DRIVES; ++unit) {
|
ide_drive_t *drive = &hwif->drives[unit];
|
ide_drive_t *drive = &hwif->drives[unit];
|
if (drive->present) {
|
if (drive->present) {
|
drive->present = 0;
|
drive->present = 0;
|
printk("%s: ERROR, PORTS ALREADY IN USE\n", drive->name);
|
printk("%s: ERROR, PORTS ALREADY IN USE\n", drive->name);
|
msgout = 1;
|
msgout = 1;
|
}
|
}
|
}
|
}
|
if (!msgout)
|
if (!msgout)
|
printk("%s: ports already in use, skipping probe\n", hwif->name);
|
printk("%s: ports already in use, skipping probe\n", hwif->name);
|
} else {
|
} else {
|
unsigned long flags;
|
unsigned long flags;
|
save_flags(flags);
|
save_flags(flags);
|
|
|
sti(); /* needed for jiffies and irq probing */
|
sti(); /* needed for jiffies and irq probing */
|
/*
|
/*
|
* Second drive should only exist if first drive was found,
|
* Second drive should only exist if first drive was found,
|
* but a lot of cdrom drives are configured as single slaves.
|
* but a lot of cdrom drives are configured as single slaves.
|
*/
|
*/
|
for (unit = 0; unit < MAX_DRIVES; ++unit) {
|
for (unit = 0; unit < MAX_DRIVES; ++unit) {
|
ide_drive_t *drive = &hwif->drives[unit];
|
ide_drive_t *drive = &hwif->drives[unit];
|
(void) probe_for_drive (drive);
|
(void) probe_for_drive (drive);
|
if (drive->present && drive->media == ide_disk) {
|
if (drive->present && drive->media == ide_disk) {
|
if ((!drive->head || drive->head > 16) && !drive->select.b.lba) {
|
if ((!drive->head || drive->head > 16) && !drive->select.b.lba) {
|
printk("%s: INVALID GEOMETRY: %d PHYSICAL HEADS?\n",
|
printk("%s: INVALID GEOMETRY: %d PHYSICAL HEADS?\n",
|
drive->name, drive->head);
|
drive->name, drive->head);
|
drive->present = 0;
|
drive->present = 0;
|
}
|
}
|
}
|
}
|
if (drive->present && !hwif->present) {
|
if (drive->present && !hwif->present) {
|
hwif->present = 1;
|
hwif->present = 1;
|
request_region(hwif->io.io_base, 8, hwif->name);
|
request_region(hwif->io.io_base, 8, hwif->name);
|
request_region(hwif->io.ctl_port, 1, hwif->name);
|
request_region(hwif->io.ctl_port, 1, hwif->name);
|
}
|
}
|
}
|
}
|
restore_flags(flags);
|
restore_flags(flags);
|
for (unit = 0; unit < MAX_DRIVES; ++unit) {
|
for (unit = 0; unit < MAX_DRIVES; ++unit) {
|
ide_drive_t *drive = &hwif->drives[unit];
|
ide_drive_t *drive = &hwif->drives[unit];
|
if (drive->present && drive->media != ide_tape) {
|
if (drive->present && drive->media != ide_tape) {
|
ide_tuneproc_t *tuneproc = HWIF(drive)->tuneproc;
|
ide_tuneproc_t *tuneproc = HWIF(drive)->tuneproc;
|
if (tuneproc != NULL && drive->autotune == 1)
|
if (tuneproc != NULL && drive->autotune == 1)
|
tuneproc(drive, 255); /* auto-tune PIO mode */
|
tuneproc(drive, 255); /* auto-tune PIO mode */
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* stridx() returns the offset of c within s,
|
* stridx() returns the offset of c within s,
|
* or -1 if c is '\0' or not found within s.
|
* or -1 if c is '\0' or not found within s.
|
*/
|
*/
|
static int stridx (const char *s, char c)
|
static int stridx (const char *s, char c)
|
{
|
{
|
char *i = strchr(s, c);
|
char *i = strchr(s, c);
|
return (i && c) ? i - s : -1;
|
return (i && c) ? i - s : -1;
|
}
|
}
|
|
|
/*
|
/*
|
* match_parm() does parsing for ide_setup():
|
* match_parm() does parsing for ide_setup():
|
*
|
*
|
* 1. the first char of s must be '='.
|
* 1. the first char of s must be '='.
|
* 2. if the remainder matches one of the supplied keywords,
|
* 2. if the remainder matches one of the supplied keywords,
|
* the index (1 based) of the keyword is negated and returned.
|
* the index (1 based) of the keyword is negated and returned.
|
* 3. if the remainder is a series of no more than max_vals numbers
|
* 3. if the remainder is a series of no more than max_vals numbers
|
* separated by commas, the numbers are saved in vals[] and a
|
* separated by commas, the numbers are saved in vals[] and a
|
* count of how many were saved is returned. Base10 is assumed,
|
* count of how many were saved is returned. Base10 is assumed,
|
* and base16 is allowed when prefixed with "0x".
|
* and base16 is allowed when prefixed with "0x".
|
* 4. otherwise, zero is returned.
|
* 4. otherwise, zero is returned.
|
*/
|
*/
|
static int match_parm (char *s, const char *keywords[], int vals[], int max_vals)
|
static int match_parm (char *s, const char *keywords[], int vals[], int max_vals)
|
{
|
{
|
static const char *decimal = "0123456789";
|
static const char *decimal = "0123456789";
|
static const char *hex = "0123456789abcdef";
|
static const char *hex = "0123456789abcdef";
|
int i, n;
|
int i, n;
|
|
|
if (*s++ == '=') {
|
if (*s++ == '=') {
|
/*
|
/*
|
* Try matching against the supplied keywords,
|
* Try matching against the supplied keywords,
|
* and return -(index+1) if we match one
|
* and return -(index+1) if we match one
|
*/
|
*/
|
if (keywords != NULL) {
|
if (keywords != NULL) {
|
for (i = 0; *keywords != NULL; ++i) {
|
for (i = 0; *keywords != NULL; ++i) {
|
if (!strcmp(s, *keywords++))
|
if (!strcmp(s, *keywords++))
|
return -(i+1);
|
return -(i+1);
|
}
|
}
|
}
|
}
|
/*
|
/*
|
* Look for a series of no more than "max_vals"
|
* Look for a series of no more than "max_vals"
|
* numeric values separated by commas, in base10,
|
* numeric values separated by commas, in base10,
|
* or base16 when prefixed with "0x".
|
* or base16 when prefixed with "0x".
|
* Return a count of how many were found.
|
* Return a count of how many were found.
|
*/
|
*/
|
for (n = 0; (i = stridx(decimal, *s)) >= 0;) {
|
for (n = 0; (i = stridx(decimal, *s)) >= 0;) {
|
vals[n] = i;
|
vals[n] = i;
|
while ((i = stridx(decimal, *++s)) >= 0)
|
while ((i = stridx(decimal, *++s)) >= 0)
|
vals[n] = (vals[n] * 10) + i;
|
vals[n] = (vals[n] * 10) + i;
|
if (*s == 'x' && !vals[n]) {
|
if (*s == 'x' && !vals[n]) {
|
while ((i = stridx(hex, *++s)) >= 0)
|
while ((i = stridx(hex, *++s)) >= 0)
|
vals[n] = (vals[n] * 0x10) + i;
|
vals[n] = (vals[n] * 0x10) + i;
|
}
|
}
|
if (++n == max_vals)
|
if (++n == max_vals)
|
break;
|
break;
|
if (*s == ',')
|
if (*s == ',')
|
++s;
|
++s;
|
}
|
}
|
if (!*s)
|
if (!*s)
|
return n;
|
return n;
|
}
|
}
|
return 0; /* zero = nothing matched */
|
return 0; /* zero = nothing matched */
|
}
|
}
|
|
|
/*
|
/*
|
* ide_setup() gets called VERY EARLY during initialization,
|
* ide_setup() gets called VERY EARLY during initialization,
|
* to handle kernel "command line" strings beginning with "hdx="
|
* to handle kernel "command line" strings beginning with "hdx="
|
* or "ide". Here is the complete set currently supported:
|
* or "ide". Here is the complete set currently supported:
|
*
|
*
|
* "hdx=" is recognized for all "x" from "a" to "h", such as "hdc".
|
* "hdx=" is recognized for all "x" from "a" to "h", such as "hdc".
|
* "idex=" is recognized for all "x" from "0" to "3", such as "ide1".
|
* "idex=" is recognized for all "x" from "0" to "3", such as "ide1".
|
*
|
*
|
* "hdx=noprobe" : drive may be present, but do not probe for it
|
* "hdx=noprobe" : drive may be present, but do not probe for it
|
* "hdx=none" : drive is NOT present, ignore cmos and do not probe
|
* "hdx=none" : drive is NOT present, ignore cmos and do not probe
|
* "hdx=nowerr" : ignore the WRERR_STAT bit on this drive
|
* "hdx=nowerr" : ignore the WRERR_STAT bit on this drive
|
* "hdx=cdrom" : drive is present, and is a cdrom drive
|
* "hdx=cdrom" : drive is present, and is a cdrom drive
|
* "hdx=cyl,head,sect" : disk drive is present, with specified geometry
|
* "hdx=cyl,head,sect" : disk drive is present, with specified geometry
|
* "hdx=autotune" : driver will attempt to tune interface speed
|
* "hdx=autotune" : driver will attempt to tune interface speed
|
* to the fastest PIO mode supported,
|
* to the fastest PIO mode supported,
|
* if possible for this drive only.
|
* if possible for this drive only.
|
* Not fully supported by all chipset types,
|
* Not fully supported by all chipset types,
|
* and quite likely to cause trouble with
|
* and quite likely to cause trouble with
|
* older/odd IDE drives.
|
* older/odd IDE drives.
|
*
|
*
|
* "idebus=xx" : inform IDE driver of VESA/PCI bus speed in Mhz,
|
* "idebus=xx" : inform IDE driver of VESA/PCI bus speed in Mhz,
|
* where "xx" is between 20 and 66 inclusive,
|
* where "xx" is between 20 and 66 inclusive,
|
* used when tuning chipset PIO modes.
|
* used when tuning chipset PIO modes.
|
* For PCI bus, 25 is correct for a P75 system,
|
* For PCI bus, 25 is correct for a P75 system,
|
* 30 is correct for P90,P120,P180 systems,
|
* 30 is correct for P90,P120,P180 systems,
|
* and 33 is used for P100,P133,P166 systems.
|
* and 33 is used for P100,P133,P166 systems.
|
* If in doubt, use idebus=33 for PCI.
|
* If in doubt, use idebus=33 for PCI.
|
* As for VLB, it is safest to not specify it.
|
* As for VLB, it is safest to not specify it.
|
*
|
*
|
* "idex=noprobe" : do not attempt to access/use this interface
|
* "idex=noprobe" : do not attempt to access/use this interface
|
* "idex=base" : probe for an interface at the addr specified,
|
* "idex=base" : probe for an interface at the addr specified,
|
* where "base" is usually 0x1f0 or 0x170
|
* where "base" is usually 0x1f0 or 0x170
|
* and "ctl" is assumed to be "base"+0x206
|
* and "ctl" is assumed to be "base"+0x206
|
* "idex=base,ctl" : specify both base and ctl
|
* "idex=base,ctl" : specify both base and ctl
|
* "idex=base,ctl,irq" : specify base, ctl, and irq number
|
* "idex=base,ctl,irq" : specify base, ctl, and irq number
|
* "idex=autotune" : driver will attempt to tune interface speed
|
* "idex=autotune" : driver will attempt to tune interface speed
|
* to the fastest PIO mode supported,
|
* to the fastest PIO mode supported,
|
* for all drives on this interface.
|
* for all drives on this interface.
|
* Not fully supported by all chipset types,
|
* Not fully supported by all chipset types,
|
* and quite likely to cause trouble with
|
* and quite likely to cause trouble with
|
* older/odd IDE drives.
|
* older/odd IDE drives.
|
* "idex=noautotune" : driver will NOT attempt to tune interface speed
|
* "idex=noautotune" : driver will NOT attempt to tune interface speed
|
* This is the default for most chipsets,
|
* This is the default for most chipsets,
|
* except the cmd640.
|
* except the cmd640.
|
* "idex=serialize" : do not overlap operations on idex and ide(x^1)
|
* "idex=serialize" : do not overlap operations on idex and ide(x^1)
|
*
|
*
|
* The following are valid ONLY on ide0,
|
* The following are valid ONLY on ide0,
|
* and the defaults for the base,ctl ports must not be altered.
|
* and the defaults for the base,ctl ports must not be altered.
|
*
|
*
|
* "ide0=dtc2278" : probe/support DTC2278 interface
|
* "ide0=dtc2278" : probe/support DTC2278 interface
|
* "ide0=ht6560b" : probe/support HT6560B interface
|
* "ide0=ht6560b" : probe/support HT6560B interface
|
* "ide0=cmd640_vlb" : *REQUIRED* for VLB cards with the CMD640 chip
|
* "ide0=cmd640_vlb" : *REQUIRED* for VLB cards with the CMD640 chip
|
* (not for PCI -- automatically detected)
|
* (not for PCI -- automatically detected)
|
* "ide0=qd6580" : probe/support qd6580 interface
|
* "ide0=qd6580" : probe/support qd6580 interface
|
* "ide0=ali14xx" : probe/support ali14xx chipsets (ALI M1439, M1443, M1445)
|
* "ide0=ali14xx" : probe/support ali14xx chipsets (ALI M1439, M1443, M1445)
|
* "ide0=umc8672" : probe/support umc8672 chipsets
|
* "ide0=umc8672" : probe/support umc8672 chipsets
|
*/
|
*/
|
void ide_setup (char *s)
|
void ide_setup (char *s)
|
{
|
{
|
int i, vals[3];
|
int i, vals[3];
|
ide_hwif_t *hwif;
|
ide_hwif_t *hwif;
|
ide_drive_t *drive;
|
ide_drive_t *drive;
|
unsigned int hw, unit;
|
unsigned int hw, unit;
|
const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1);
|
const char max_drive = 'a' + ((MAX_HWIFS * MAX_DRIVES) - 1);
|
const char max_hwif = '0' + (MAX_HWIFS - 1);
|
const char max_hwif = '0' + (MAX_HWIFS - 1);
|
|
|
printk("ide_setup: %s", s);
|
printk("ide_setup: %s", s);
|
init_ide_data ();
|
init_ide_data ();
|
|
|
/*
|
/*
|
* Look for drive options: "hdx="
|
* Look for drive options: "hdx="
|
*/
|
*/
|
if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) {
|
if (s[0] == 'h' && s[1] == 'd' && s[2] >= 'a' && s[2] <= max_drive) {
|
const char *hd_words[] = {"none", "noprobe", "nowerr", "cdrom",
|
const char *hd_words[] = {"none", "noprobe", "nowerr", "cdrom",
|
"serialize", "autotune", "noautotune",
|
"serialize", "autotune", "noautotune",
|
"slow", "ide-scsi", NULL};
|
"slow", "ide-scsi", NULL};
|
unit = s[2] - 'a';
|
unit = s[2] - 'a';
|
hw = unit / MAX_DRIVES;
|
hw = unit / MAX_DRIVES;
|
unit = unit % MAX_DRIVES;
|
unit = unit % MAX_DRIVES;
|
hwif = &ide_hwifs[hw];
|
hwif = &ide_hwifs[hw];
|
drive = &hwif->drives[unit];
|
drive = &hwif->drives[unit];
|
switch (match_parm(&s[3], hd_words, vals, 3)) {
|
switch (match_parm(&s[3], hd_words, vals, 3)) {
|
case -1: /* "none" */
|
case -1: /* "none" */
|
drive->nobios = 1; /* drop into "noprobe" */
|
drive->nobios = 1; /* drop into "noprobe" */
|
case -2: /* "noprobe" */
|
case -2: /* "noprobe" */
|
drive->noprobe = 1;
|
drive->noprobe = 1;
|
goto done;
|
goto done;
|
case -3: /* "nowerr" */
|
case -3: /* "nowerr" */
|
drive->bad_wstat = BAD_R_STAT;
|
drive->bad_wstat = BAD_R_STAT;
|
hwif->noprobe = 0;
|
hwif->noprobe = 0;
|
goto done;
|
goto done;
|
case -4: /* "cdrom" */
|
case -4: /* "cdrom" */
|
drive->present = 1;
|
drive->present = 1;
|
drive->media = ide_cdrom;
|
drive->media = ide_cdrom;
|
hwif->noprobe = 0;
|
hwif->noprobe = 0;
|
goto done;
|
goto done;
|
case -5: /* "serialize" */
|
case -5: /* "serialize" */
|
printk(" -- USE \"ide%d=serialize\" INSTEAD", hw);
|
printk(" -- USE \"ide%d=serialize\" INSTEAD", hw);
|
goto do_serialize;
|
goto do_serialize;
|
case -6: /* "autotune" */
|
case -6: /* "autotune" */
|
drive->autotune = 1;
|
drive->autotune = 1;
|
goto done;
|
goto done;
|
case -7: /* "noautotune" */
|
case -7: /* "noautotune" */
|
drive->autotune = 2;
|
drive->autotune = 2;
|
goto done;
|
goto done;
|
case -8: /* "slow" */
|
case -8: /* "slow" */
|
drive->slow = 1;
|
drive->slow = 1;
|
goto done;
|
goto done;
|
case -9: /* "ide-scsi" */
|
case -9: /* "ide-scsi" */
|
drive->ide_scsi = 1;
|
drive->ide_scsi = 1;
|
goto done;
|
goto done;
|
case 3: /* cyl,head,sect */
|
case 3: /* cyl,head,sect */
|
drive->media = ide_disk;
|
drive->media = ide_disk;
|
drive->cyl = drive->bios_cyl = vals[0];
|
drive->cyl = drive->bios_cyl = vals[0];
|
drive->head = drive->bios_head = vals[1];
|
drive->head = drive->bios_head = vals[1];
|
drive->sect = drive->bios_sect = vals[2];
|
drive->sect = drive->bios_sect = vals[2];
|
drive->present = 1;
|
drive->present = 1;
|
drive->forced_geom = 1;
|
drive->forced_geom = 1;
|
hwif->noprobe = 0;
|
hwif->noprobe = 0;
|
goto done;
|
goto done;
|
default:
|
default:
|
goto bad_option;
|
goto bad_option;
|
}
|
}
|
}
|
}
|
|
|
if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e')
|
if (s[0] != 'i' || s[1] != 'd' || s[2] != 'e')
|
goto bad_option;
|
goto bad_option;
|
/*
|
/*
|
* Look for bus speed option: "idebus="
|
* Look for bus speed option: "idebus="
|
*/
|
*/
|
if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') {
|
if (s[3] == 'b' && s[4] == 'u' && s[5] == 's') {
|
if (match_parm(&s[6], NULL, vals, 1) != 1)
|
if (match_parm(&s[6], NULL, vals, 1) != 1)
|
goto bad_option;
|
goto bad_option;
|
if (vals[0] >= 20 && vals[0] <= 66)
|
if (vals[0] >= 20 && vals[0] <= 66)
|
idebus_parameter = vals[0];
|
idebus_parameter = vals[0];
|
else
|
else
|
printk(" -- BAD BUS SPEED! Expected value from 20 to 66");
|
printk(" -- BAD BUS SPEED! Expected value from 20 to 66");
|
goto done;
|
goto done;
|
}
|
}
|
/*
|
/*
|
* Look for interface options: "idex="
|
* Look for interface options: "idex="
|
*/
|
*/
|
if (s[3] >= '0' && s[3] <= max_hwif) {
|
if (s[3] >= '0' && s[3] <= max_hwif) {
|
/*
|
/*
|
* Be VERY CAREFUL changing this: note hardcoded indexes below
|
* Be VERY CAREFUL changing this: note hardcoded indexes below
|
*/
|
*/
|
const char *ide_words[] = {"noprobe", "serialize", "autotune", "noautotune",
|
const char *ide_words[] = {"noprobe", "serialize", "autotune", "noautotune",
|
"qd6580", "ht6560b", "cmd640_vlb", "dtc2278", "umc8672", "ali14xx", "dc4030", NULL};
|
"qd6580", "ht6560b", "cmd640_vlb", "dtc2278", "umc8672", "ali14xx", "dc4030", NULL};
|
hw = s[3] - '0';
|
hw = s[3] - '0';
|
hwif = &ide_hwifs[hw];
|
hwif = &ide_hwifs[hw];
|
i = match_parm(&s[4], ide_words, vals, 3);
|
i = match_parm(&s[4], ide_words, vals, 3);
|
|
|
/*
|
/*
|
* Cryptic check to ensure chipset not already set for hwif:
|
* Cryptic check to ensure chipset not already set for hwif:
|
*/
|
*/
|
if (i > 0 || i <= -5) {
|
if (i > 0 || i <= -5) {
|
if (hwif->chipset != ide_unknown)
|
if (hwif->chipset != ide_unknown)
|
goto bad_option;
|
goto bad_option;
|
if (i <= -5) {
|
if (i <= -5) {
|
if (ide_hwifs[1].chipset != ide_unknown)
|
if (ide_hwifs[1].chipset != ide_unknown)
|
goto bad_option;
|
goto bad_option;
|
/*
|
/*
|
* Interface keywords work only for ide0:
|
* Interface keywords work only for ide0:
|
*/
|
*/
|
if (hw != 0)
|
if (hw != 0)
|
goto bad_hwif;
|
goto bad_hwif;
|
}
|
}
|
}
|
}
|
|
|
switch (i) {
|
switch (i) {
|
#ifdef CONFIG_BLK_DEV_PROMISE
|
#ifdef CONFIG_BLK_DEV_PROMISE
|
case -11: /* "dc4030" */
|
case -11: /* "dc4030" */
|
{
|
{
|
setup_dc4030(hwif);
|
setup_dc4030(hwif);
|
goto done;
|
goto done;
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
#endif /* CONFIG_BLK_DEV_PROMISE */
|
#ifdef CONFIG_BLK_DEV_ALI14XX
|
#ifdef CONFIG_BLK_DEV_ALI14XX
|
case -10: /* "ali14xx" */
|
case -10: /* "ali14xx" */
|
{
|
{
|
extern void init_ali14xx (void);
|
extern void init_ali14xx (void);
|
init_ali14xx();
|
init_ali14xx();
|
goto done;
|
goto done;
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_ALI14XX */
|
#endif /* CONFIG_BLK_DEV_ALI14XX */
|
#ifdef CONFIG_BLK_DEV_UMC8672
|
#ifdef CONFIG_BLK_DEV_UMC8672
|
case -9: /* "umc8672" */
|
case -9: /* "umc8672" */
|
{
|
{
|
extern void init_umc8672 (void);
|
extern void init_umc8672 (void);
|
init_umc8672();
|
init_umc8672();
|
goto done;
|
goto done;
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_UMC8672 */
|
#endif /* CONFIG_BLK_DEV_UMC8672 */
|
#ifdef CONFIG_BLK_DEV_DTC2278
|
#ifdef CONFIG_BLK_DEV_DTC2278
|
case -8: /* "dtc2278" */
|
case -8: /* "dtc2278" */
|
{
|
{
|
extern void init_dtc2278 (void);
|
extern void init_dtc2278 (void);
|
init_dtc2278();
|
init_dtc2278();
|
goto done;
|
goto done;
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_DTC2278 */
|
#endif /* CONFIG_BLK_DEV_DTC2278 */
|
#ifdef CONFIG_BLK_DEV_CMD640
|
#ifdef CONFIG_BLK_DEV_CMD640
|
case -7: /* "cmd640_vlb" */
|
case -7: /* "cmd640_vlb" */
|
{
|
{
|
extern int cmd640_vlb; /* flag for cmd640.c */
|
extern int cmd640_vlb; /* flag for cmd640.c */
|
cmd640_vlb = 1;
|
cmd640_vlb = 1;
|
goto done;
|
goto done;
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_CMD640 */
|
#endif /* CONFIG_BLK_DEV_CMD640 */
|
#ifdef CONFIG_BLK_DEV_HT6560B
|
#ifdef CONFIG_BLK_DEV_HT6560B
|
case -6: /* "ht6560b" */
|
case -6: /* "ht6560b" */
|
{
|
{
|
extern void init_ht6560b (void);
|
extern void init_ht6560b (void);
|
init_ht6560b();
|
init_ht6560b();
|
goto done;
|
goto done;
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_HT6560B */
|
#endif /* CONFIG_BLK_DEV_HT6560B */
|
#if CONFIG_BLK_DEV_QD6580
|
#if CONFIG_BLK_DEV_QD6580
|
case -5: /* "qd6580" (has secondary i/f) */
|
case -5: /* "qd6580" (has secondary i/f) */
|
{
|
{
|
extern void init_qd6580 (void);
|
extern void init_qd6580 (void);
|
init_qd6580();
|
init_qd6580();
|
goto done;
|
goto done;
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_QD6580 */
|
#endif /* CONFIG_BLK_DEV_QD6580 */
|
case -4: /* "noautotune" */
|
case -4: /* "noautotune" */
|
hwif->drives[0].autotune = 2;
|
hwif->drives[0].autotune = 2;
|
hwif->drives[1].autotune = 2;
|
hwif->drives[1].autotune = 2;
|
goto done;
|
goto done;
|
case -3: /* "autotune" */
|
case -3: /* "autotune" */
|
hwif->drives[0].autotune = 1;
|
hwif->drives[0].autotune = 1;
|
hwif->drives[1].autotune = 1;
|
hwif->drives[1].autotune = 1;
|
goto done;
|
goto done;
|
case -2: /* "serialize" */
|
case -2: /* "serialize" */
|
do_serialize:
|
do_serialize:
|
ide_hwifs[hw].serialized = 1; /* serialize */
|
ide_hwifs[hw].serialized = 1; /* serialize */
|
ide_hwifs[hw^1].serialized = 1; /* with mate */
|
ide_hwifs[hw^1].serialized = 1; /* with mate */
|
goto done;
|
goto done;
|
|
|
case -1: /* "noprobe" */
|
case -1: /* "noprobe" */
|
hwif->noprobe = 1;
|
hwif->noprobe = 1;
|
goto done;
|
goto done;
|
|
|
case 1: /* base */
|
case 1: /* base */
|
vals[1] = vals[0] + 0x206; /* default ctl */
|
vals[1] = vals[0] + 0x206; /* default ctl */
|
case 2: /* base,ctl */
|
case 2: /* base,ctl */
|
vals[2] = 0; /* default irq = probe for it */
|
vals[2] = 0; /* default irq = probe for it */
|
case 3: /* base,ctl,irq */
|
case 3: /* base,ctl,irq */
|
hwif->io.io_base = vals[0];
|
hwif->io.io_base = vals[0];
|
hwif->io.ctl_port = vals[1];
|
hwif->io.ctl_port = vals[1];
|
hwif->io.io_shift = 0;
|
hwif->io.io_shift = 0;
|
hwif->irq = vals[2];
|
hwif->irq = vals[2];
|
hwif->noprobe = 0;
|
hwif->noprobe = 0;
|
hwif->chipset = ide_generic;
|
hwif->chipset = ide_generic;
|
goto done;
|
goto done;
|
|
|
case 0: goto bad_option;
|
case 0: goto bad_option;
|
default:
|
default:
|
printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n");
|
printk(" -- SUPPORT NOT CONFIGURED IN THIS KERNEL\n");
|
return;
|
return;
|
}
|
}
|
}
|
}
|
bad_option:
|
bad_option:
|
printk(" -- BAD OPTION\n");
|
printk(" -- BAD OPTION\n");
|
return;
|
return;
|
bad_hwif:
|
bad_hwif:
|
printk("-- NOT SUPPORTED ON ide%d", hw);
|
printk("-- NOT SUPPORTED ON ide%d", hw);
|
done:
|
done:
|
printk("\n");
|
printk("\n");
|
}
|
}
|
|
|
/*
|
/*
|
* This routine is called from the partition-table code in genhd.c
|
* This routine is called from the partition-table code in genhd.c
|
* to "convert" a drive to a logical geometry with fewer than 1024 cyls.
|
* to "convert" a drive to a logical geometry with fewer than 1024 cyls.
|
*
|
*
|
* The second parameter, "xparm", determines exactly how the translation
|
* The second parameter, "xparm", determines exactly how the translation
|
* will be handled:
|
* will be handled:
|
* 0 = convert to CHS with fewer than 1024 cyls
|
* 0 = convert to CHS with fewer than 1024 cyls
|
* using the same method as Ontrack DiskManager.
|
* using the same method as Ontrack DiskManager.
|
* 1 = same as "0", plus offset everything by 63 sectors.
|
* 1 = same as "0", plus offset everything by 63 sectors.
|
* -1 = similar to "0", plus redirect sector 0 to sector 1.
|
* -1 = similar to "0", plus redirect sector 0 to sector 1.
|
* >1 = convert to a CHS geometry with "xparm" heads.
|
* >1 = convert to a CHS geometry with "xparm" heads.
|
*
|
*
|
* Returns 0 if the translation was not possible, if the device was not
|
* Returns 0 if the translation was not possible, if the device was not
|
* an IDE disk drive, or if a geometry was "forced" on the commandline.
|
* an IDE disk drive, or if a geometry was "forced" on the commandline.
|
* Returns 1 if the geometry translation was successful.
|
* Returns 1 if the geometry translation was successful.
|
*/
|
*/
|
int ide_xlate_1024 (kdev_t i_rdev, int xparm, const char *msg)
|
int ide_xlate_1024 (kdev_t i_rdev, int xparm, const char *msg)
|
{
|
{
|
ide_drive_t *drive;
|
ide_drive_t *drive;
|
static const byte head_vals[] = {4, 8, 16, 32, 64, 128, 255, 0};
|
static const byte head_vals[] = {4, 8, 16, 32, 64, 128, 255, 0};
|
const byte *heads = head_vals;
|
const byte *heads = head_vals;
|
unsigned long tracks;
|
unsigned long tracks;
|
|
|
if ((drive = get_info_ptr(i_rdev)) == NULL || drive->forced_geom)
|
if ((drive = get_info_ptr(i_rdev)) == NULL || drive->forced_geom)
|
return 0;
|
return 0;
|
|
|
if (xparm > 1 && xparm <= drive->bios_head && drive->bios_sect == 63)
|
if (xparm > 1 && xparm <= drive->bios_head && drive->bios_sect == 63)
|
return 0; /* we already have a translation */
|
return 0; /* we already have a translation */
|
|
|
printk("%s ", msg);
|
printk("%s ", msg);
|
|
|
if (drive->id) {
|
if (drive->id) {
|
drive->cyl = drive->id->cyls;
|
drive->cyl = drive->id->cyls;
|
drive->head = drive->id->heads;
|
drive->head = drive->id->heads;
|
drive->sect = drive->id->sectors;
|
drive->sect = drive->id->sectors;
|
}
|
}
|
drive->bios_cyl = drive->cyl;
|
drive->bios_cyl = drive->cyl;
|
drive->bios_head = drive->head;
|
drive->bios_head = drive->head;
|
drive->bios_sect = drive->sect;
|
drive->bios_sect = drive->sect;
|
drive->special.b.set_geometry = 1;
|
drive->special.b.set_geometry = 1;
|
|
|
tracks = drive->bios_cyl * drive->bios_head * drive->bios_sect / 63;
|
tracks = drive->bios_cyl * drive->bios_head * drive->bios_sect / 63;
|
drive->bios_sect = 63;
|
drive->bios_sect = 63;
|
if (xparm > 1) {
|
if (xparm > 1) {
|
drive->bios_head = xparm;
|
drive->bios_head = xparm;
|
drive->bios_cyl = tracks / drive->bios_head;
|
drive->bios_cyl = tracks / drive->bios_head;
|
} else {
|
} else {
|
while (drive->bios_cyl >= 1024) {
|
while (drive->bios_cyl >= 1024) {
|
drive->bios_head = *heads;
|
drive->bios_head = *heads;
|
drive->bios_cyl = tracks / drive->bios_head;
|
drive->bios_cyl = tracks / drive->bios_head;
|
if (0 == *++heads)
|
if (0 == *++heads)
|
break;
|
break;
|
}
|
}
|
#if FAKE_FDISK_FOR_EZDRIVE
|
#if FAKE_FDISK_FOR_EZDRIVE
|
if (xparm == -1) {
|
if (xparm == -1) {
|
drive->remap_0_to_1 = 1;
|
drive->remap_0_to_1 = 1;
|
msg = "0->1";
|
msg = "0->1";
|
} else
|
} else
|
#endif /* FAKE_FDISK_FOR_EZDRIVE */
|
#endif /* FAKE_FDISK_FOR_EZDRIVE */
|
if (xparm == 1) {
|
if (xparm == 1) {
|
drive->sect0 = 63;
|
drive->sect0 = 63;
|
drive->bios_cyl = (tracks - 1) / drive->bios_head;
|
drive->bios_cyl = (tracks - 1) / drive->bios_head;
|
msg = "+63";
|
msg = "+63";
|
}
|
}
|
printk("[remap %s] ", msg);
|
printk("[remap %s] ", msg);
|
}
|
}
|
drive->part[0].nr_sects = current_capacity(drive);
|
drive->part[0].nr_sects = current_capacity(drive);
|
printk("[%d/%d/%d]", drive->bios_cyl, drive->bios_head, drive->bios_sect);
|
printk("[%d/%d/%d]", drive->bios_cyl, drive->bios_head, drive->bios_sect);
|
return 1;
|
return 1;
|
}
|
}
|
|
|
#if MAX_HWIFS > 1
|
#if MAX_HWIFS > 1
|
/*
|
/*
|
* save_match() is used to simplify logic in init_irq() below.
|
* save_match() is used to simplify logic in init_irq() below.
|
*
|
*
|
* A loophole here is that we may not know about a particular
|
* A loophole here is that we may not know about a particular
|
* hwif's irq until after that hwif is actually probed/initialized..
|
* hwif's irq until after that hwif is actually probed/initialized..
|
* This could be a problem for the case where an hwif is on a
|
* This could be a problem for the case where an hwif is on a
|
* dual interface that requires serialization (eg. cmd640) and another
|
* dual interface that requires serialization (eg. cmd640) and another
|
* hwif using one of the same irqs is initialized beforehand.
|
* hwif using one of the same irqs is initialized beforehand.
|
*
|
*
|
* This routine detects and reports such situations, but does not fix them.
|
* This routine detects and reports such situations, but does not fix them.
|
*/
|
*/
|
static void save_match (ide_hwif_t *hwif, ide_hwif_t *new, ide_hwif_t **match)
|
static void save_match (ide_hwif_t *hwif, ide_hwif_t *new, ide_hwif_t **match)
|
{
|
{
|
ide_hwif_t *m = *match;
|
ide_hwif_t *m = *match;
|
|
|
if (m && m->hwgroup && m->hwgroup != new->hwgroup) {
|
if (m && m->hwgroup && m->hwgroup != new->hwgroup) {
|
if (!new->hwgroup)
|
if (!new->hwgroup)
|
return;
|
return;
|
printk("%s: potential irq problem with %s and %s\n", hwif->name, new->name, m->name);
|
printk("%s: potential irq problem with %s and %s\n", hwif->name, new->name, m->name);
|
}
|
}
|
if (!m || m->irq != hwif->irq) /* don't undo a prior perfect match */
|
if (!m || m->irq != hwif->irq) /* don't undo a prior perfect match */
|
*match = new;
|
*match = new;
|
}
|
}
|
#endif /* MAX_HWIFS > 1 */
|
#endif /* MAX_HWIFS > 1 */
|
|
|
/*
|
/*
|
* This routine sets up the irq for an ide interface, and creates a new
|
* This routine sets up the irq for an ide interface, and creates a new
|
* hwgroup for the irq/hwif if none was previously assigned.
|
* hwgroup for the irq/hwif if none was previously assigned.
|
*
|
*
|
* Much of the code is for correctly detecting/handling irq sharing
|
* Much of the code is for correctly detecting/handling irq sharing
|
* and irq serialization situations. This is somewhat complex because
|
* and irq serialization situations. This is somewhat complex because
|
* it handles static as well as dynamic (PCMCIA) IDE interfaces.
|
* it handles static as well as dynamic (PCMCIA) IDE interfaces.
|
*
|
*
|
* The SA_INTERRUPT in sa_flags means ide_intr() is always entered with
|
* The SA_INTERRUPT in sa_flags means ide_intr() is always entered with
|
* interrupts completely disabled. This can be bad for interrupt latency,
|
* interrupts completely disabled. This can be bad for interrupt latency,
|
* but anything else has led to problems on some machines. We re-enable
|
* but anything else has led to problems on some machines. We re-enable
|
* interrupts as much as we can safely do in most places.
|
* interrupts as much as we can safely do in most places.
|
*/
|
*/
|
static int init_irq (ide_hwif_t *hwif)
|
static int init_irq (ide_hwif_t *hwif)
|
{
|
{
|
unsigned long flags;
|
unsigned long flags;
|
#if MAX_HWIFS > 1
|
#if MAX_HWIFS > 1
|
unsigned int index;
|
unsigned int index;
|
#endif /* MAX_HWIFS > 1 */
|
#endif /* MAX_HWIFS > 1 */
|
ide_hwgroup_t *hwgroup;
|
ide_hwgroup_t *hwgroup;
|
ide_hwif_t *match = NULL;
|
ide_hwif_t *match = NULL;
|
|
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
|
|
hwif->hwgroup = NULL;
|
hwif->hwgroup = NULL;
|
#if MAX_HWIFS > 1
|
#if MAX_HWIFS > 1
|
/*
|
/*
|
* Group up with any other hwifs that share our irq(s).
|
* Group up with any other hwifs that share our irq(s).
|
*/
|
*/
|
for (index = 0; index < MAX_HWIFS; index++) {
|
for (index = 0; index < MAX_HWIFS; index++) {
|
ide_hwif_t *h = &ide_hwifs[index];
|
ide_hwif_t *h = &ide_hwifs[index];
|
if (h->hwgroup) { /* scan only initialized hwif's */
|
if (h->hwgroup) { /* scan only initialized hwif's */
|
if (hwif->irq == h->irq) {
|
if (hwif->irq == h->irq) {
|
hwif->sharing_irq = h->sharing_irq = 1;
|
hwif->sharing_irq = h->sharing_irq = 1;
|
save_match(hwif, h, &match);
|
save_match(hwif, h, &match);
|
}
|
}
|
if (hwif->serialized) {
|
if (hwif->serialized) {
|
ide_hwif_t *mate = &ide_hwifs[hwif->index^1];
|
ide_hwif_t *mate = &ide_hwifs[hwif->index^1];
|
if (index == mate->index || h->irq == mate->irq)
|
if (index == mate->index || h->irq == mate->irq)
|
save_match(hwif, h, &match);
|
save_match(hwif, h, &match);
|
}
|
}
|
if (h->serialized) {
|
if (h->serialized) {
|
ide_hwif_t *mate = &ide_hwifs[h->index^1];
|
ide_hwif_t *mate = &ide_hwifs[h->index^1];
|
if (hwif->irq == mate->irq)
|
if (hwif->irq == mate->irq)
|
save_match(hwif, h, &match);
|
save_match(hwif, h, &match);
|
}
|
}
|
}
|
}
|
}
|
}
|
#endif /* MAX_HWIFS > 1 */
|
#endif /* MAX_HWIFS > 1 */
|
/*
|
/*
|
* If we are still without a hwgroup, then form a new one
|
* If we are still without a hwgroup, then form a new one
|
*/
|
*/
|
if (match) {
|
if (match) {
|
hwgroup = match->hwgroup;
|
hwgroup = match->hwgroup;
|
} else {
|
} else {
|
hwgroup = kmalloc(sizeof(ide_hwgroup_t), GFP_KERNEL);
|
hwgroup = kmalloc(sizeof(ide_hwgroup_t), GFP_KERNEL);
|
hwgroup->hwif = hwgroup->next_hwif = hwif->next = hwif;
|
hwgroup->hwif = hwgroup->next_hwif = hwif->next = hwif;
|
hwgroup->rq = NULL;
|
hwgroup->rq = NULL;
|
hwgroup->handler = NULL;
|
hwgroup->handler = NULL;
|
if (hwif->drives[0].present)
|
if (hwif->drives[0].present)
|
hwgroup->drive = &hwif->drives[0];
|
hwgroup->drive = &hwif->drives[0];
|
else
|
else
|
hwgroup->drive = &hwif->drives[1];
|
hwgroup->drive = &hwif->drives[1];
|
hwgroup->poll_timeout = 0;
|
hwgroup->poll_timeout = 0;
|
hwgroup->active = 0;
|
hwgroup->active = 0;
|
init_timer(&hwgroup->timer);
|
init_timer(&hwgroup->timer);
|
hwgroup->timer.function = &timer_expiry;
|
hwgroup->timer.function = &timer_expiry;
|
hwgroup->timer.data = (unsigned long) hwgroup;
|
hwgroup->timer.data = (unsigned long) hwgroup;
|
}
|
}
|
|
|
/*
|
/*
|
* Allocate the irq, if not already obtained for another hwif
|
* Allocate the irq, if not already obtained for another hwif
|
*/
|
*/
|
if (!match || match->irq != hwif->irq) {
|
if (!match || match->irq != hwif->irq) {
|
if (request_irq(hwif->irq, ide_intr, SA_INTERRUPT, hwif->name, hwgroup)) {
|
if (request_irq(hwif->irq, ide_intr, SA_INTERRUPT, hwif->name, hwgroup)) {
|
if (!match)
|
if (!match)
|
kfree(hwgroup);
|
kfree(hwgroup);
|
restore_flags(flags);
|
restore_flags(flags);
|
return 1;
|
return 1;
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* Everything is okay, so link us into the hwgroup
|
* Everything is okay, so link us into the hwgroup
|
*/
|
*/
|
hwif->hwgroup = hwgroup;
|
hwif->hwgroup = hwgroup;
|
hwif->next = hwgroup->hwif->next;
|
hwif->next = hwgroup->hwif->next;
|
hwgroup->hwif->next = hwif;
|
hwgroup->hwif->next = hwif;
|
|
|
restore_flags(flags); /* safe now that hwif->hwgroup is set up */
|
restore_flags(flags); /* safe now that hwif->hwgroup is set up */
|
|
|
printk("%s at 0x%03lx-0x%03lx,0x%03lx on irq %d", hwif->name,
|
printk("%s at 0x%03lx-0x%03lx,0x%03lx on irq %d", hwif->name,
|
hwif->io.io_base, hwif->io.io_base+7, hwif->io.ctl_port, hwif->irq);
|
hwif->io.io_base, hwif->io.io_base+7, hwif->io.ctl_port, hwif->irq);
|
if (match)
|
if (match)
|
printk(" (%sed with %s)", hwif->sharing_irq ? "shar" : "serializ", match->name);
|
printk(" (%sed with %s)", hwif->sharing_irq ? "shar" : "serializ", match->name);
|
printk("\n");
|
printk("\n");
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static struct file_operations ide_fops = {
|
static struct file_operations ide_fops = {
|
NULL, /* lseek - default */
|
NULL, /* lseek - default */
|
block_read, /* read - general block-dev read */
|
block_read, /* read - general block-dev read */
|
block_write, /* write - general block-dev write */
|
block_write, /* write - general block-dev write */
|
NULL, /* readdir - bad */
|
NULL, /* readdir - bad */
|
NULL, /* select */
|
NULL, /* select */
|
ide_ioctl, /* ioctl */
|
ide_ioctl, /* ioctl */
|
NULL, /* mmap */
|
NULL, /* mmap */
|
ide_open, /* open */
|
ide_open, /* open */
|
ide_release, /* release */
|
ide_release, /* release */
|
block_fsync /* fsync */
|
block_fsync /* fsync */
|
,NULL, /* fasync */
|
,NULL, /* fasync */
|
ide_check_media_change, /* check_media_change */
|
ide_check_media_change, /* check_media_change */
|
revalidate_disk /* revalidate */
|
revalidate_disk /* revalidate */
|
};
|
};
|
|
|
#ifdef CONFIG_PCI
|
#ifdef CONFIG_PCI
|
#if defined(CONFIG_BLK_DEV_RZ1000) || defined(CONFIG_BLK_DEV_TRITON)
|
#if defined(CONFIG_BLK_DEV_RZ1000) || defined(CONFIG_BLK_DEV_TRITON)
|
|
|
typedef void (ide_pci_init_proc_t)(byte, byte);
|
typedef void (ide_pci_init_proc_t)(byte, byte);
|
|
|
/*
|
/*
|
* ide_probe_pci() scans PCI for a specific vendor/device function,
|
* ide_probe_pci() scans PCI for a specific vendor/device function,
|
* and invokes the supplied init routine for each instance detected.
|
* and invokes the supplied init routine for each instance detected.
|
*/
|
*/
|
static void ide_probe_pci (unsigned short vendor, unsigned short device, ide_pci_init_proc_t *init, int func_adj)
|
static void ide_probe_pci (unsigned short vendor, unsigned short device, ide_pci_init_proc_t *init, int func_adj)
|
{
|
{
|
unsigned long flags;
|
unsigned long flags;
|
unsigned index;
|
unsigned index;
|
byte fn, bus;
|
byte fn, bus;
|
|
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
for (index = 0; !pcibios_find_device (vendor, device, index, &bus, &fn); ++index) {
|
for (index = 0; !pcibios_find_device (vendor, device, index, &bus, &fn); ++index) {
|
init (bus, fn + func_adj);
|
init (bus, fn + func_adj);
|
}
|
}
|
restore_flags(flags);
|
restore_flags(flags);
|
}
|
}
|
|
|
#endif /* defined(CONFIG_BLK_DEV_RZ1000) || defined(CONFIG_BLK_DEV_TRITON) */
|
#endif /* defined(CONFIG_BLK_DEV_RZ1000) || defined(CONFIG_BLK_DEV_TRITON) */
|
|
|
static void ide_probe_promise_20246(void)
|
static void ide_probe_promise_20246(void)
|
{
|
{
|
byte fn, bus;
|
byte fn, bus;
|
unsigned short io[6], count = 0;
|
unsigned short io[6], count = 0;
|
unsigned int reg, tmp, i;
|
unsigned int reg, tmp, i;
|
ide_hwif_t *hwif;
|
ide_hwif_t *hwif;
|
|
|
memset(io, 0, 6 * sizeof(unsigned short));
|
memset(io, 0, 6 * sizeof(unsigned short));
|
if (pcibios_find_device(PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20246, 0, &bus, &fn))
|
if (pcibios_find_device(PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20246, 0, &bus, &fn))
|
return;
|
return;
|
printk("ide: Promise Technology IDE Ultra-DMA 33 on PCI bus %d function %d\n", bus, fn);
|
printk("ide: Promise Technology IDE Ultra-DMA 33 on PCI bus %d function %d\n", bus, fn);
|
for (reg = PCI_BASE_ADDRESS_0; reg <= PCI_BASE_ADDRESS_5; reg += 4) {
|
for (reg = PCI_BASE_ADDRESS_0; reg <= PCI_BASE_ADDRESS_5; reg += 4) {
|
pcibios_read_config_dword(bus, fn, reg, &tmp);
|
pcibios_read_config_dword(bus, fn, reg, &tmp);
|
if (tmp & PCI_BASE_ADDRESS_SPACE_IO)
|
if (tmp & PCI_BASE_ADDRESS_SPACE_IO)
|
io[count++] = tmp & PCI_BASE_ADDRESS_IO_MASK;
|
io[count++] = tmp & PCI_BASE_ADDRESS_IO_MASK;
|
}
|
}
|
for (i = 2; i < 4; i++) {
|
for (i = 2; i < 4; i++) {
|
hwif = ide_hwifs + i;
|
hwif = ide_hwifs + i;
|
if (hwif->chipset == ide_generic) {
|
if (hwif->chipset == ide_generic) {
|
printk("ide%d: overridden with command line parameter\n", i);
|
printk("ide%d: overridden with command line parameter\n", i);
|
return;
|
return;
|
}
|
}
|
tmp = (i - 2) * 2;
|
tmp = (i - 2) * 2;
|
if (!io[tmp] || !io[tmp + 1]) {
|
if (!io[tmp] || !io[tmp + 1]) {
|
printk("ide%d: invalid port address %x, %x -- aborting\n", i, io[tmp], io[tmp + 1]);
|
printk("ide%d: invalid port address %x, %x -- aborting\n", i, io[tmp], io[tmp + 1]);
|
return;
|
return;
|
}
|
}
|
hwif->io_base = io[tmp];
|
hwif->io_base = io[tmp];
|
hwif->ctl_port = io[tmp + 1] + 2;
|
hwif->ctl_port = io[tmp + 1] + 2;
|
hwif->noprobe = 0;
|
hwif->noprobe = 0;
|
}
|
}
|
#ifdef CONFIG_BLK_DEV_TRITON
|
#ifdef CONFIG_BLK_DEV_TRITON
|
ide_init_promise (bus, fn, &ide_hwifs[2], &ide_hwifs[3], io[4]);
|
ide_init_promise (bus, fn, &ide_hwifs[2], &ide_hwifs[3], io[4]);
|
#endif
|
#endif
|
}
|
}
|
|
|
#endif /* CONFIG_PCI */
|
#endif /* CONFIG_PCI */
|
|
|
/*
|
/*
|
* ide_init_pci() finds/initializes "known" PCI IDE interfaces
|
* ide_init_pci() finds/initializes "known" PCI IDE interfaces
|
*
|
*
|
* This routine should ideally be using pcibios_find_class() to find
|
* This routine should ideally be using pcibios_find_class() to find
|
* all IDE interfaces, but that function causes some systems to "go weird".
|
* all IDE interfaces, but that function causes some systems to "go weird".
|
*/
|
*/
|
static void probe_for_hwifs (void)
|
static void probe_for_hwifs (void)
|
{
|
{
|
#ifdef CONFIG_PCI
|
#ifdef CONFIG_PCI
|
/*
|
/*
|
* Find/initialize PCI IDE interfaces
|
* Find/initialize PCI IDE interfaces
|
*/
|
*/
|
if (pcibios_present()) {
|
if (pcibios_present()) {
|
#ifdef CONFIG_BLK_DEV_RZ1000
|
#ifdef CONFIG_BLK_DEV_RZ1000
|
ide_pci_init_proc_t init_rz1000;
|
ide_pci_init_proc_t init_rz1000;
|
ide_probe_pci (PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_RZ1000, &init_rz1000, 0);
|
ide_probe_pci (PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_RZ1000, &init_rz1000, 0);
|
ide_probe_pci (PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_RZ1001, &init_rz1000, 0);
|
ide_probe_pci (PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_RZ1001, &init_rz1000, 0);
|
#endif /* CONFIG_BLK_DEV_RZ1000 */
|
#endif /* CONFIG_BLK_DEV_RZ1000 */
|
#ifdef CONFIG_BLK_DEV_TRITON
|
#ifdef CONFIG_BLK_DEV_TRITON
|
/*
|
/*
|
* Apparently the BIOS32 services on Intel motherboards are
|
* Apparently the BIOS32 services on Intel motherboards are
|
* buggy and won't find the PCI_DEVICE_ID_INTEL_82371_1 for us.
|
* buggy and won't find the PCI_DEVICE_ID_INTEL_82371_1 for us.
|
* So instead, we search for PCI_DEVICE_ID_INTEL_82371_0,
|
* So instead, we search for PCI_DEVICE_ID_INTEL_82371_0,
|
* and then add 1.
|
* and then add 1.
|
*/
|
*/
|
ide_probe_pci (PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371_0, &ide_init_triton, 1);
|
ide_probe_pci (PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371_0, &ide_init_triton, 1);
|
ide_probe_pci (PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_1, &ide_init_triton, 0);
|
ide_probe_pci (PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_1, &ide_init_triton, 0);
|
ide_probe_pci (PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB, &ide_init_triton, 0);
|
ide_probe_pci (PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB, &ide_init_triton, 0);
|
#endif /* CONFIG_BLK_DEV_TRITON */
|
#endif /* CONFIG_BLK_DEV_TRITON */
|
ide_probe_promise_20246();
|
ide_probe_promise_20246();
|
}
|
}
|
#endif /* CONFIG_PCI */
|
#endif /* CONFIG_PCI */
|
#ifdef CONFIG_BLK_DEV_CMD640
|
#ifdef CONFIG_BLK_DEV_CMD640
|
{
|
{
|
extern void ide_probe_for_cmd640x (void);
|
extern void ide_probe_for_cmd640x (void);
|
ide_probe_for_cmd640x();
|
ide_probe_for_cmd640x();
|
}
|
}
|
#endif
|
#endif
|
#ifdef CONFIG_BLK_DEV_PROMISE
|
#ifdef CONFIG_BLK_DEV_PROMISE
|
init_dc4030();
|
init_dc4030();
|
#endif
|
#endif
|
#ifdef CONFIG_BLK_DEV_IDE_ICSIDE
|
#ifdef CONFIG_BLK_DEV_IDE_ICSIDE
|
icside_init ();
|
icside_init ();
|
#endif
|
#endif
|
#ifdef CONFIG_BLK_DEV_IDE_RAPIDE
|
#ifdef CONFIG_BLK_DEV_IDE_RAPIDE
|
rapide_init ();
|
rapide_init ();
|
#endif
|
#endif
|
}
|
}
|
|
|
static int hwif_init (int h)
|
static int hwif_init (int h)
|
{
|
{
|
ide_hwif_t *hwif = &ide_hwifs[h];
|
ide_hwif_t *hwif = &ide_hwifs[h];
|
void (*rfn)(void);
|
void (*rfn)(void);
|
|
|
if (!hwif->present)
|
if (!hwif->present)
|
return 0;
|
return 0;
|
if (!hwif->irq) {
|
if (!hwif->irq) {
|
if (!(hwif->irq = default_irqs[h])) {
|
if (!(hwif->irq = default_irqs[h])) {
|
printk("%s: DISABLED, NO IRQ\n", hwif->name);
|
printk("%s: DISABLED, NO IRQ\n", hwif->name);
|
return (hwif->present = 0);
|
return (hwif->present = 0);
|
}
|
}
|
}
|
}
|
#ifdef CONFIG_BLK_DEV_HD
|
#ifdef CONFIG_BLK_DEV_HD
|
if (hwif->irq == HD_IRQ && hwif->io_base != HD_DATA) {
|
if (hwif->irq == HD_IRQ && hwif->io_base != HD_DATA) {
|
printk("%s: CANNOT SHARE IRQ WITH OLD HARDDISK DRIVER (hd.c)\n", hwif->name);
|
printk("%s: CANNOT SHARE IRQ WITH OLD HARDDISK DRIVER (hd.c)\n", hwif->name);
|
return (hwif->present = 0);
|
return (hwif->present = 0);
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_HD */
|
#endif /* CONFIG_BLK_DEV_HD */
|
|
|
hwif->present = 0; /* we set it back to 1 if all is ok below */
|
hwif->present = 0; /* we set it back to 1 if all is ok below */
|
switch (hwif->major) {
|
switch (hwif->major) {
|
case IDE0_MAJOR: rfn = &do_ide0_request; break;
|
case IDE0_MAJOR: rfn = &do_ide0_request; break;
|
#if MAX_HWIFS > 1
|
#if MAX_HWIFS > 1
|
case IDE1_MAJOR: rfn = &do_ide1_request; break;
|
case IDE1_MAJOR: rfn = &do_ide1_request; break;
|
#endif
|
#endif
|
#if MAX_HWIFS > 2
|
#if MAX_HWIFS > 2
|
case IDE2_MAJOR: rfn = &do_ide2_request; break;
|
case IDE2_MAJOR: rfn = &do_ide2_request; break;
|
#endif
|
#endif
|
#if MAX_HWIFS > 3
|
#if MAX_HWIFS > 3
|
case IDE3_MAJOR: rfn = &do_ide3_request; break;
|
case IDE3_MAJOR: rfn = &do_ide3_request; break;
|
#endif
|
#endif
|
default:
|
default:
|
printk("%s: request_fn NOT DEFINED\n", hwif->name);
|
printk("%s: request_fn NOT DEFINED\n", hwif->name);
|
return (hwif->present = 0);
|
return (hwif->present = 0);
|
}
|
}
|
if (register_blkdev (hwif->major, hwif->name, &ide_fops)) {
|
if (register_blkdev (hwif->major, hwif->name, &ide_fops)) {
|
printk("%s: UNABLE TO GET MAJOR NUMBER %d\n", hwif->name, hwif->major);
|
printk("%s: UNABLE TO GET MAJOR NUMBER %d\n", hwif->name, hwif->major);
|
} else if (init_irq (hwif)) {
|
} else if (init_irq (hwif)) {
|
printk("%s: UNABLE TO GET IRQ %d\n", hwif->name, hwif->irq);
|
printk("%s: UNABLE TO GET IRQ %d\n", hwif->name, hwif->irq);
|
(void) unregister_blkdev (hwif->major, hwif->name);
|
(void) unregister_blkdev (hwif->major, hwif->name);
|
} else {
|
} else {
|
init_gendisk(hwif);
|
init_gendisk(hwif);
|
blk_dev[hwif->major].request_fn = rfn;
|
blk_dev[hwif->major].request_fn = rfn;
|
read_ahead[hwif->major] = 8; /* (4kB) */
|
read_ahead[hwif->major] = 8; /* (4kB) */
|
hwif->present = 1; /* success */
|
hwif->present = 1; /* success */
|
}
|
}
|
return hwif->present;
|
return hwif->present;
|
}
|
}
|
|
|
/*
|
/*
|
* A variable so that we know if we're adding drives at boot time,
|
* A variable so that we know if we're adding drives at boot time,
|
* so we don't do a partition check on it.
|
* so we don't do a partition check on it.
|
*/
|
*/
|
static int ide_at_boot;
|
static int ide_at_boot;
|
/*
|
/*
|
* This is gets invoked once during initialization, to set *everything* up
|
* This is gets invoked once during initialization, to set *everything* up
|
*/
|
*/
|
int ide_init (void)
|
int ide_init (void)
|
{
|
{
|
int index;
|
int index;
|
|
|
ide_at_boot = 1;
|
ide_at_boot = 1;
|
|
|
init_ide_data ();
|
init_ide_data ();
|
/*
|
/*
|
* Probe for special "known" interface chipsets
|
* Probe for special "known" interface chipsets
|
*/
|
*/
|
probe_for_hwifs ();
|
probe_for_hwifs ();
|
|
|
/*
|
/*
|
* Probe for drives in the usual way.. CMOS/BIOS, then poke at ports
|
* Probe for drives in the usual way.. CMOS/BIOS, then poke at ports
|
*/
|
*/
|
for (index = 0; index < MAX_HWIFS; ++index)
|
for (index = 0; index < MAX_HWIFS; ++index)
|
probe_hwif (&ide_hwifs[index]);
|
probe_hwif (&ide_hwifs[index]);
|
for (index = 0; index < MAX_HWIFS; ++index)
|
for (index = 0; index < MAX_HWIFS; ++index)
|
hwif_init (index);
|
hwif_init (index);
|
|
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
#ifdef CONFIG_BLK_DEV_IDETAPE
|
idetape_register_chrdev(); /* Register character device interface to the ide tape */
|
idetape_register_chrdev(); /* Register character device interface to the ide tape */
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
#endif /* CONFIG_BLK_DEV_IDETAPE */
|
|
|
ide_at_boot = 0;
|
ide_at_boot = 0;
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
#ifdef CONFIG_BLK_DEV_IDE_CARDS
|
#ifdef CONFIG_BLK_DEV_IDE_CARDS
|
int ide_register_port (int io_base, int ctl_port, int stepping, int irq)
|
int ide_register_port (int io_base, int ctl_port, int stepping, int irq)
|
{
|
{
|
int index, i, rc = -1;
|
int index, i, rc = -1;
|
ide_hwif_t *hwif;
|
ide_hwif_t *hwif;
|
ide_drive_t *drive;
|
ide_drive_t *drive;
|
unsigned long flags;
|
unsigned long flags;
|
|
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
for (index = 0; index < MAX_HWIFS; ++index) {
|
for (index = 0; index < MAX_HWIFS; ++index) {
|
hwif = &ide_hwifs[index];
|
hwif = &ide_hwifs[index];
|
if (hwif->present) {
|
if (hwif->present) {
|
if (hwif->io.io_base == io_base || hwif->io.ctl_port == ctl_port)
|
if (hwif->io.io_base == io_base || hwif->io.ctl_port == ctl_port)
|
break; /* this ide port already exists */
|
break; /* this ide port already exists */
|
} else {
|
} else {
|
if (ide_at_boot) {
|
if (ide_at_boot) {
|
if (hwif->io.io_base == 0) {
|
if (hwif->io.io_base == 0) {
|
hwif->io.io_base = io_base;
|
hwif->io.io_base = io_base;
|
hwif->io.ctl_port = ctl_port;
|
hwif->io.ctl_port = ctl_port;
|
hwif->io.io_shift = stepping;
|
hwif->io.io_shift = stepping;
|
hwif->irq = irq;
|
hwif->irq = irq;
|
hwif->noprobe = 0;
|
hwif->noprobe = 0;
|
rc = index;
|
rc = index;
|
break;
|
break;
|
}
|
}
|
} else {
|
} else {
|
hwif->io.io_base = io_base;
|
hwif->io.io_base = io_base;
|
hwif->io.ctl_port = ctl_port;
|
hwif->io.ctl_port = ctl_port;
|
hwif->io.io_shift = stepping;
|
hwif->io.io_shift = stepping;
|
hwif->irq = irq;
|
hwif->irq = irq;
|
hwif->noprobe = 0;
|
hwif->noprobe = 0;
|
probe_hwif(hwif);
|
probe_hwif(hwif);
|
if (!hwif_init(index))
|
if (!hwif_init(index))
|
break;
|
break;
|
for (i = 0; i < hwif->gd->nr_real; i++) {
|
for (i = 0; i < hwif->gd->nr_real; i++) {
|
drive = &hwif->drives[i];
|
drive = &hwif->drives[i];
|
revalidate_disk(MKDEV(hwif->major, i<<PARTN_BITS));
|
revalidate_disk(MKDEV(hwif->major, i<<PARTN_BITS));
|
#ifdef CONFIG_BLK_DEV_IDECD
|
#ifdef CONFIG_BLK_DEV_IDECD
|
if (drive->present && drive->media == ide_cdrom)
|
if (drive->present && drive->media == ide_cdrom)
|
ide_cdrom_setup(drive);
|
ide_cdrom_setup(drive);
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
}
|
}
|
rc = index;
|
rc = index;
|
break;
|
break;
|
}
|
}
|
}
|
}
|
}
|
}
|
restore_flags(flags);
|
restore_flags(flags);
|
return rc;
|
return rc;
|
}
|
}
|
#endif
|
#endif
|
|
|
#ifdef CONFIG_BLK_DEV_IDE_PCMCIA
|
#ifdef CONFIG_BLK_DEV_IDE_PCMCIA
|
int ide_register(int io_base, int ctl_port, int irq)
|
int ide_register(int io_base, int ctl_port, int irq)
|
{
|
{
|
int index, i, rc = -1;
|
int index, i, rc = -1;
|
ide_hwif_t *hwif;
|
ide_hwif_t *hwif;
|
ide_drive_t *drive;
|
ide_drive_t *drive;
|
unsigned long flags;
|
unsigned long flags;
|
|
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
for (index = 0; index < MAX_HWIFS; ++index) {
|
for (index = 0; index < MAX_HWIFS; ++index) {
|
hwif = &ide_hwifs[index];
|
hwif = &ide_hwifs[index];
|
if (hwif->present) {
|
if (hwif->present) {
|
if (hwif->io.io_base == io_base || hwif->io.ctl_port == ctl_port)
|
if (hwif->io.io_base == io_base || hwif->io.ctl_port == ctl_port)
|
break; /* this ide port already exists */
|
break; /* this ide port already exists */
|
} else {
|
} else {
|
hwif->io.io_base = io_base;
|
hwif->io.io_base = io_base;
|
hwif->io.ctl_port = ctl_port;
|
hwif->io.ctl_port = ctl_port;
|
hwif->io.io_shift = 0;
|
hwif->io.io_shift = 0;
|
hwif->irq = irq;
|
hwif->irq = irq;
|
hwif->noprobe = 0;
|
hwif->noprobe = 0;
|
probe_hwif(hwif);
|
probe_hwif(hwif);
|
if (!hwif_init(index))
|
if (!hwif_init(index))
|
break;
|
break;
|
for (i = 0; i < hwif->gd->nr_real; i++) {
|
for (i = 0; i < hwif->gd->nr_real; i++) {
|
drive = &hwif->drives[i];
|
drive = &hwif->drives[i];
|
revalidate_disk(MKDEV(hwif->major, i<<PARTN_BITS));
|
revalidate_disk(MKDEV(hwif->major, i<<PARTN_BITS));
|
#ifdef CONFIG_BLK_DEV_IDECD
|
#ifdef CONFIG_BLK_DEV_IDECD
|
if (drive->present && drive->media == ide_cdrom)
|
if (drive->present && drive->media == ide_cdrom)
|
ide_cdrom_setup(drive);
|
ide_cdrom_setup(drive);
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
#endif /* CONFIG_BLK_DEV_IDECD */
|
}
|
}
|
rc = index;
|
rc = index;
|
break;
|
break;
|
}
|
}
|
}
|
}
|
restore_flags(flags);
|
restore_flags(flags);
|
return rc;
|
return rc;
|
}
|
}
|
#endif
|
#endif
|
|
|
#if defined(CONFIG_BLK_DEV_IDE_PCMCIA) || defined(CONFIG_BLK_DEV_IDE_CARDS)
|
#if defined(CONFIG_BLK_DEV_IDE_PCMCIA) || defined(CONFIG_BLK_DEV_IDE_CARDS)
|
void ide_unregister (unsigned int index)
|
void ide_unregister (unsigned int index)
|
{
|
{
|
struct gendisk *gd, **gdp;
|
struct gendisk *gd, **gdp;
|
ide_hwif_t *hwif, *g;
|
ide_hwif_t *hwif, *g;
|
ide_hwgroup_t *hwgroup;
|
ide_hwgroup_t *hwgroup;
|
int irq_count = 0;
|
int irq_count = 0;
|
unsigned long flags;
|
unsigned long flags;
|
|
|
if (index >= MAX_HWIFS)
|
if (index >= MAX_HWIFS)
|
return;
|
return;
|
save_flags(flags);
|
save_flags(flags);
|
cli();
|
cli();
|
hwif = &ide_hwifs[index];
|
hwif = &ide_hwifs[index];
|
if (!hwif->present || hwif->drives[0].busy || hwif->drives[1].busy) {
|
if (!hwif->present || hwif->drives[0].busy || hwif->drives[1].busy) {
|
restore_flags(flags);
|
restore_flags(flags);
|
return;
|
return;
|
}
|
}
|
hwif->present = 0;
|
hwif->present = 0;
|
hwgroup = hwif->hwgroup;
|
hwgroup = hwif->hwgroup;
|
|
|
/*
|
/*
|
* free the irq if we were the only hwif using it
|
* free the irq if we were the only hwif using it
|
*/
|
*/
|
g = hwgroup->hwif;
|
g = hwgroup->hwif;
|
do {
|
do {
|
if (g->irq == hwif->irq)
|
if (g->irq == hwif->irq)
|
++irq_count;
|
++irq_count;
|
g = g->next;
|
g = g->next;
|
} while (g != hwgroup->hwif);
|
} while (g != hwgroup->hwif);
|
if (irq_count == 1)
|
if (irq_count == 1)
|
free_irq(hwif->irq, hwgroup);
|
free_irq(hwif->irq, hwgroup);
|
|
|
/*
|
/*
|
* Note that we only release the standard ports,
|
* Note that we only release the standard ports,
|
* and do not even try to handle any extra ports
|
* and do not even try to handle any extra ports
|
* allocated for weird IDE interface chipsets.
|
* allocated for weird IDE interface chipsets.
|
*/
|
*/
|
release_region(hwif->io.io_base, 8 << hwif->io.io_shift);
|
release_region(hwif->io.io_base, 8 << hwif->io.io_shift);
|
release_region(hwif->io.ctl_port, 1);
|
release_region(hwif->io.ctl_port, 1);
|
|
|
/*
|
/*
|
* Remove us from the hwgroup, and free
|
* Remove us from the hwgroup, and free
|
* the hwgroup if we were the only member
|
* the hwgroup if we were the only member
|
*/
|
*/
|
while (hwgroup->hwif->next != hwif)
|
while (hwgroup->hwif->next != hwif)
|
hwgroup->hwif = hwgroup->hwif->next;
|
hwgroup->hwif = hwgroup->hwif->next;
|
hwgroup->hwif->next = hwif->next;
|
hwgroup->hwif->next = hwif->next;
|
if (hwgroup->hwif == hwif)
|
if (hwgroup->hwif == hwif)
|
hwgroup->hwif = hwif->next;
|
hwgroup->hwif = hwif->next;
|
if (hwgroup->next_hwif == hwif)
|
if (hwgroup->next_hwif == hwif)
|
hwgroup->next_hwif = hwif->next;
|
hwgroup->next_hwif = hwif->next;
|
if (hwgroup->hwif == hwif)
|
if (hwgroup->hwif == hwif)
|
kfree(hwgroup);
|
kfree(hwgroup);
|
|
|
/*
|
/*
|
* Remove us from the kernel's knowledge
|
* Remove us from the kernel's knowledge
|
*/
|
*/
|
unregister_blkdev(hwif->major, hwif->name);
|
unregister_blkdev(hwif->major, hwif->name);
|
kfree(blksize_size[hwif->major]);
|
kfree(blksize_size[hwif->major]);
|
blk_dev[hwif->major].request_fn = NULL;
|
blk_dev[hwif->major].request_fn = NULL;
|
blksize_size[hwif->major] = NULL;
|
blksize_size[hwif->major] = NULL;
|
for (gdp = &gendisk_head; *gdp; gdp = &((*gdp)->next))
|
for (gdp = &gendisk_head; *gdp; gdp = &((*gdp)->next))
|
if (*gdp == hwif->gd)
|
if (*gdp == hwif->gd)
|
break;
|
break;
|
if (*gdp == NULL)
|
if (*gdp == NULL)
|
printk("gd not in disk chain!\n");
|
printk("gd not in disk chain!\n");
|
else {
|
else {
|
gd = *gdp; *gdp = gd->next;
|
gd = *gdp; *gdp = gd->next;
|
kfree(gd->sizes);
|
kfree(gd->sizes);
|
kfree(gd->part);
|
kfree(gd->part);
|
kfree(gd);
|
kfree(gd);
|
}
|
}
|
init_hwif_data (index); /* restore hwif data to pristine status */
|
init_hwif_data (index); /* restore hwif data to pristine status */
|
restore_flags(flags);
|
restore_flags(flags);
|
}
|
}
|
#endif /* CONFIG_BLK_DEV_IDE_PCMCIA */
|
#endif /* CONFIG_BLK_DEV_IDE_PCMCIA */
|
|
|
