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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [scsi/] [u14-34f.c] - Rev 1777
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/* * u14-34f.c - Low-level driver for UltraStor 14F/34F SCSI host adapters. * * 26 Jul 1998 Rev. 4.33 for linux 2.0.35 and 2.1.111 * Added command line option (et:[y|n]) to use the existing * translation (returned by scsicam_bios_param) as disk geometry. * The default is et:n, which uses the disk geometry jumpered * on the board. * The default value et:n is compatible with all previous revisions * of this driver. * * 28 May 1998 Rev. 4.32 for linux 2.0.33 and 2.1.104 * Increased busy timeout from 10 msec. to 200 msec. while * processing interrupts. * * 18 May 1998 Rev. 4.31 for linux 2.0.33 and 2.1.102 * Improved abort handling during the eh recovery process. * * 13 May 1998 Rev. 4.30 for linux 2.0.33 and 2.1.101 * The driver is now fully SMP safe, including the * abort and reset routines. * Added command line options (eh:[y|n]) to choose between * new_eh_code and the old scsi code. * If linux version >= 2.1.101 the default is eh:y, while the eh * option is ignored for previous releases and the old scsi code * is used. * * 18 Apr 1998 Rev. 4.20 for linux 2.0.33 and 2.1.97 * Reworked interrupt handler. * * 11 Apr 1998 rev. 4.05 for linux 2.0.33 and 2.1.95 * Major reliability improvement: when a batch with overlapping * requests is detected, requests are queued one at a time * eliminating any possible board or drive reordering. * * 10 Apr 1998 rev. 4.04 for linux 2.0.33 and 2.1.95 * Improved SMP support (if linux version >= 2.1.95). * * 9 Apr 1998 rev. 4.03 for linux 2.0.33 and 2.1.94 * Performance improvement: when sequential i/o is detected, * always use direct sort instead of reverse sort. * * 4 Apr 1998 rev. 4.02 for linux 2.0.33 and 2.1.92 * io_port is now unsigned long. * * 17 Mar 1998 rev. 4.01 for linux 2.0.33 and 2.1.88 * Use new scsi error handling code (if linux version >= 2.1.88). * Use new interrupt code. * * 12 Sep 1997 rev. 3.11 for linux 2.0.30 and 2.1.55 * Use of udelay inside the wait loops to avoid timeout * problems with fast cpus. * Removed check about useless calls to the interrupt service * routine (reported on SMP systems only). * At initialization time "sorted/unsorted" is displayed instead * of "linked/unlinked" to reinforce the fact that "linking" is * nothing but "elevator sorting" in the actual implementation. * * 17 May 1997 rev. 3.10 for linux 2.0.30 and 2.1.38 * Use of serial_number_at_timeout in abort and reset processing. * Use of the __initfunc and __initdata macro in setup code. * Minor cleanups in the list_statistics code. * * 24 Feb 1997 rev. 3.00 for linux 2.0.29 and 2.1.26 * When loading as a module, parameter passing is now supported * both in 2.0 and in 2.1 style. * Fixed data transfer direction for some SCSI opcodes. * Immediate acknowledge to request sense commands. * Linked commands to each disk device are now reordered by elevator * sorting. Rare cases in which reordering of write requests could * cause wrong results are managed. * * 18 Jan 1997 rev. 2.60 for linux 2.1.21 and 2.0.28 * Added command line options to enable/disable linked commands * (lc:[y|n]), old firmware support (of:[y|n]) and to set the max * queue depth (mq:xx). Default is "u14-34f=lc:n,of:n,mq:8". * Improved command linking. * * 8 Jan 1997 rev. 2.50 for linux 2.1.20 and 2.0.27 * Added linked command support. * * 3 Dec 1996 rev. 2.40 for linux 2.1.14 and 2.0.27 * Added queue depth adjustment. * * 22 Nov 1996 rev. 2.30 for linux 2.1.12 and 2.0.26 * The list of i/o ports to be probed can be overwritten by the * "u14-34f=port0,port1,...." boot command line option. * Scatter/gather lists are now allocated by a number of kmalloc * calls, in order to avoid the previous size limit of 64Kb. * * 16 Nov 1996 rev. 2.20 for linux 2.1.10 and 2.0.25 * Added multichannel support. * * 27 Sep 1996 rev. 2.12 for linux 2.1.0 * Portability cleanups (virtual/bus addressing, little/big endian * support). * * 09 Jul 1996 rev. 2.11 for linux 2.0.4 * "Data over/under-run" no longer implies a redo on all targets. * Number of internal retries is now limited. * * 16 Apr 1996 rev. 2.10 for linux 1.3.90 * New argument "reset_flags" to the reset routine. * * 21 Jul 1995 rev. 2.02 for linux 1.3.11 * Fixed Data Transfer Direction for some SCSI commands. * * 13 Jun 1995 rev. 2.01 for linux 1.2.10 * HAVE_OLD_UX4F_FIRMWARE should be defined for U34F boards when * the firmware prom is not the latest one (28008-006). * * 11 Mar 1995 rev. 2.00 for linux 1.2.0 * Fixed a bug which prevented media change detection for removable * disk drives. * * 23 Feb 1995 rev. 1.18 for linux 1.1.94 * Added a check for scsi_register returning NULL. * * 11 Feb 1995 rev. 1.17 for linux 1.1.91 * U14F qualified to run with 32 sglists. * Now DEBUG_RESET is disabled by default. * * 9 Feb 1995 rev. 1.16 for linux 1.1.90 * Use host->wish_block instead of host->block. * * 8 Feb 1995 rev. 1.15 for linux 1.1.89 * Cleared target_time_out counter while performing a reset. * * 28 Jan 1995 rev. 1.14 for linux 1.1.86 * Added module support. * Log and do a retry when a disk drive returns a target status * different from zero on a recovered error. * Auto detects if U14F boards have an old firmware revision. * Max number of scatter/gather lists set to 16 for all boards * (most installation run fine using 33 sglists, while other * has problems when using more then 16). * * 16 Jan 1995 rev. 1.13 for linux 1.1.81 * Display a message if check_region detects a port address * already in use. * * 15 Dec 1994 rev. 1.12 for linux 1.1.74 * The host->block flag is set for all the detected ISA boards. * * 30 Nov 1994 rev. 1.11 for linux 1.1.68 * Redo i/o on target status CHECK_CONDITION for TYPE_DISK only. * Added optional support for using a single board at a time. * * 14 Nov 1994 rev. 1.10 for linux 1.1.63 * * 28 Oct 1994 rev. 1.09 for linux 1.1.58 Final BETA release. * 16 Jul 1994 rev. 1.00 for linux 1.1.29 Initial ALPHA release. * * This driver is a total replacement of the original UltraStor * scsi driver, but it supports ONLY the 14F and 34F boards. * It can be configured in the same kernel in which the original * ultrastor driver is configured to allow the original U24F * support. * * Multiple U14F and/or U34F host adapters are supported. * * Copyright (C) 1994-1998 Dario Ballabio (dario@milano.europe.dg.com) * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that redistributions of source * code retain the above copyright notice and this comment without * modification. * * WARNING: if your 14/34F board has an old firmware revision (see below) * you must change "#undef" into "#define" in the following * statement. */ #undef HAVE_OLD_UX4F_FIRMWARE /* * The UltraStor 14F, 24F, and 34F are a family of intelligent, high * performance SCSI-2 host adapters. * Here is the scoop on the various models: * * 14F - ISA first-party DMA HA with floppy support and WD1003 emulation. * 24F - EISA Bus Master HA with floppy support and WD1003 emulation. * 34F - VESA Local-Bus Bus Master HA (no WD1003 emulation). * * This code has been tested with up to two U14F boards, using both * firmware 28004-005/38004-004 (BIOS rev. 2.00) and the latest firmware * 28004-006/38004-005 (BIOS rev. 2.01). * * The latest firmware is required in order to get reliable operations when * clustering is enabled. ENABLE_CLUSTERING provides a performance increase * up to 50% on sequential access. * * Since the Scsi_Host_Template structure is shared among all 14F and 34F, * the last setting of use_clustering is in effect for all of these boards. * * Here a sample configuration using two U14F boards: * U14F0: ISA 0x330, BIOS 0xc8000, IRQ 11, DMA 5, SG 32, MB 16, of:n, lc:y, mq:8. U14F1: ISA 0x340, BIOS 0x00000, IRQ 10, DMA 6, SG 32, MB 16, of:n, lc:y, mq:8. * * The boot controller must have its BIOS enabled, while other boards can * have their BIOS disabled, or enabled to an higher address. * Boards are named Ux4F0, Ux4F1..., according to the port address order in * the io_port[] array. * * The following facts are based on real testing results (not on * documentation) on the above U14F board. * * - The U14F board should be jumpered for bus on time less or equal to 7 * microseconds, while the default is 11 microseconds. This is order to * get acceptable performance while using floppy drive and hard disk * together. The jumpering for 7 microseconds is: JP13 pin 15-16, * JP14 pin 7-8 and pin 9-10. * The reduction has a little impact on scsi performance. * * - If scsi bus length exceeds 3m., the scsi bus speed needs to be reduced * from 10Mhz to 5Mhz (do this by inserting a jumper on JP13 pin 7-8). * * - If U14F on board firmware is older than 28004-006/38004-005, * the U14F board is unable to provide reliable operations if the scsi * request length exceeds 16Kbyte. When this length is exceeded the * behavior is: * - adapter_status equal 0x96 or 0xa3 or 0x93 or 0x94; * - adapter_status equal 0 and target_status equal 2 on for all targets * in the next operation following the reset. * This sequence takes a long time (>3 seconds), so in the meantime * the SD_TIMEOUT in sd.c could expire giving rise to scsi aborts * (SD_TIMEOUT has been increased from 3 to 6 seconds in 1.1.31). * Because of this I had to DISABLE_CLUSTERING and to work around the * bus reset in the interrupt service routine, returning DID_BUS_BUSY * so that the operations are retried without complains from the scsi.c * code. * Any reset of the scsi bus is going to kill tape operations, since * no retry is allowed for tapes. Bus resets are more likely when the * scsi bus is under heavy load. * Requests using scatter/gather have a maximum length of 16 x 1024 bytes * when DISABLE_CLUSTERING is in effect, but unscattered requests could be * larger than 16Kbyte. * * The new firmware has fixed all the above problems. * * For U34F boards the latest bios prom is 38008-002 (BIOS rev. 2.01), * the latest firmware prom is 28008-006. Older firmware 28008-005 has * problems when using more then 16 scatter/gather lists. * * The list of i/o ports to be probed can be totally replaced by the * boot command line option: "u14-34f=port0,port1,port2,...", where the * port0, port1... arguments are ISA/VESA addresses to be probed. * For example using "u14-34f=0x230,0x340", the driver probes only the two * addresses 0x230 and 0x340 in this order; "u14-34f=0" totally disables * this driver. * * After the optional list of detection probes, other possible command line * options are: * * eh:y use new scsi code (linux 2.2 only); * eh:n use old scsi code; * et:y use disk geometry returned by scsicam_bios_param; * et:n use disk geometry jumpered on the board; * lc:y enables linked commands; * lc:n disables linked commands; * of:y enables old firmware support; * of:n disables old firmware support; * mq:xx set the max queue depth to the value xx (2 <= xx <= 8). * * The default value is: "u14-34f=lc:n,of:n,mq:8,et:n". * An example using the list of detection probes could be: * "u14-34f=0x230,0x340,lc:y,of:n,mq:4,eh:n,et:n". * * When loading as a module, parameters can be specified as well. * The above example would be (use 1 in place of y and 0 in place of n): * * modprobe u14-34f io_port=0x230,0x340 linked_comm=1 have_old_firmware=0 \ * max_queue_depth=4 use_new_eh_code=0 ext_tran=0 * * ---------------------------------------------------------------------------- * In this implementation, linked commands are designed to work with any DISK * or CD-ROM, since this linking has only the intent of clustering (time-wise) * and reordering by elevator sorting commands directed to each device, * without any relation with the actual SCSI protocol between the controller * and the device. * If Q is the queue depth reported at boot time for each device (also named * cmds/lun) and Q > 2, whenever there is already an active command to the * device all other commands to the same device (up to Q-1) are kept waiting * in the elevator sorting queue. When the active command completes, the * commands in this queue are sorted by sector address. The sort is chosen * between increasing or decreasing by minimizing the seek distance between * the sector of the commands just completed and the sector of the first * command in the list to be sorted. * Trivial math assures that the unsorted average seek distance when doing * random seeks over S sectors is S/3. * When (Q-1) requests are uniformly distributed over S sectors, the average * distance between two adjacent requests is S/((Q-1) + 1), so the sorted * average seek distance for (Q-1) random requests over S sectors is S/Q. * The elevator sorting hence divides the seek distance by a factor Q/3. * The above pure geometric remarks are valid in all cases and the * driver effectively reduces the seek distance by the predicted factor * when there are Q concurrent read i/o operations on the device, but this * does not necessarily results in a noticeable performance improvement: * your mileage may vary.... * * Note: command reordering inside a batch of queued commands could cause * wrong results only if there is at least one write request and the * intersection (sector-wise) of all requests is not empty. * When the driver detects a batch including overlapping requests * (a really rare event) strict serial (pid) order is enforced. * ---------------------------------------------------------------------------- * * The boards are named Ux4F0, Ux4F1,... according to the detection order. * * In order to support multiple ISA boards in a reliable way, * the driver sets host->wish_block = TRUE for all ISA boards. */ #include <linux/version.h> #define LinuxVersionCode(v, p, s) (((v)<<16)+((p)<<8)+(s)) #define MAX_INT_PARAM 10 #if defined(MODULE) #include <linux/module.h> #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,26) MODULE_PARM(io_port, "1-" __MODULE_STRING(MAX_INT_PARAM) "i"); MODULE_PARM(linked_comm, "i"); MODULE_PARM(have_old_firmware, "i"); MODULE_PARM(link_statistics, "i"); MODULE_PARM(max_queue_depth, "i"); MODULE_PARM(use_new_eh_code, "i"); MODULE_PARM(ext_tran, "i"); MODULE_AUTHOR("Dario Ballabio"); #endif #endif #include <linux/string.h> #include <linux/sched.h> #include <linux/kernel.h> #include <linux/ioport.h> #include <linux/delay.h> #include <asm/io.h> #include <asm/system.h> #include <asm/byteorder.h> #include <linux/proc_fs.h> #include <linux/blk.h> #include "scsi.h" #include "hosts.h" #include "sd.h" #include <asm/dma.h> #include <asm/irq.h> #include "u14-34f.h" #include <linux/stat.h> #include <linux/config.h> #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,36) #include <linux/init.h> #else #define __initfunc(A) A #define __initdata #define __init #endif #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,101) #include <asm/spinlock.h> #define IRQ_FLAGS #define IRQ_LOCK #define IRQ_LOCK_SAVE #define IRQ_UNLOCK #define IRQ_UNLOCK_RESTORE #define SPIN_FLAGS unsigned long spin_flags; #define SPIN_LOCK spin_lock_irq(&io_request_lock); #define SPIN_LOCK_SAVE spin_lock_irqsave(&io_request_lock, spin_flags); #define SPIN_UNLOCK spin_unlock_irq(&io_request_lock); #define SPIN_UNLOCK_RESTORE \ spin_unlock_irqrestore(&io_request_lock, spin_flags); static int use_new_eh_code = TRUE; #else #define IRQ_FLAGS unsigned long irq_flags; #define IRQ_LOCK cli(); #define IRQ_LOCK_SAVE do {save_flags(irq_flags); cli();} while (0); #define IRQ_UNLOCK sti(); #define IRQ_UNLOCK_RESTORE do {restore_flags(irq_flags);} while (0); #define SPIN_FLAGS #define SPIN_LOCK #define SPIN_LOCK_SAVE #define SPIN_UNLOCK #define SPIN_UNLOCK_RESTORE static int use_new_eh_code = FALSE; #endif struct proc_dir_entry proc_scsi_u14_34f = { PROC_SCSI_U14_34F, 6, "u14_34f", S_IFDIR | S_IRUGO | S_IXUGO, 2 }; /* Values for the PRODUCT_ID ports for the 14/34F */ #define PRODUCT_ID1 0x56 #define PRODUCT_ID2 0x40 /* NOTE: Only upper nibble is used */ /* Subversion values */ #define ISA 0 #define ESA 1 #define OP_HOST_ADAPTER 0x1 #define OP_SCSI 0x2 #define OP_RESET 0x4 #define DTD_SCSI 0x0 #define DTD_IN 0x1 #define DTD_OUT 0x2 #define DTD_NONE 0x3 #define HA_CMD_INQUIRY 0x1 #define HA_CMD_SELF_DIAG 0x2 #define HA_CMD_READ_BUFF 0x3 #define HA_CMD_WRITE_BUFF 0x4 #undef DEBUG_LINKED_COMMANDS #undef DEBUG_DETECT #undef DEBUG_INTERRUPT #undef DEBUG_RESET #undef DEBUG_GENERATE_ERRORS #undef DEBUG_GENERATE_ABORTS #undef DEBUG_GEOMETRY #define MAX_ISA 3 #define MAX_VESA 1 #define MAX_EISA 0 #define MAX_PCI 0 #define MAX_BOARDS (MAX_ISA + MAX_VESA + MAX_EISA + MAX_PCI) #define MAX_CHANNEL 1 #define MAX_LUN 8 #define MAX_TARGET 8 #define MAX_MAILBOXES 16 #define MAX_SGLIST 32 #define MAX_SAFE_SGLIST 16 #define MAX_INTERNAL_RETRIES 64 #define MAX_CMD_PER_LUN 2 #define MAX_TAGGED_CMD_PER_LUN (MAX_MAILBOXES - MAX_CMD_PER_LUN) #define SKIP ULONG_MAX #define FALSE 0 #define TRUE 1 #define FREE 0 #define IN_USE 1 #define LOCKED 2 #define IN_RESET 3 #define IGNORE 4 #define READY 5 #define ABORTING 6 #define NO_DMA 0xff #define MAXLOOP 10000 #define REG_LCL_MASK 0 #define REG_LCL_INTR 1 #define REG_SYS_MASK 2 #define REG_SYS_INTR 3 #define REG_PRODUCT_ID1 4 #define REG_PRODUCT_ID2 5 #define REG_CONFIG1 6 #define REG_CONFIG2 7 #define REG_OGM 8 #define REG_ICM 12 #define REGION_SIZE 13 #define BSY_ASSERTED 0x01 #define IRQ_ASSERTED 0x01 #define CMD_RESET 0xc0 #define CMD_OGM_INTR 0x01 #define CMD_CLR_INTR 0x01 #define CMD_ENA_INTR 0x81 #define ASOK 0x00 #define ASST 0x91 #define ARRAY_SIZE(arr) (sizeof (arr) / sizeof (arr)[0]) #define YESNO(a) ((a) ? 'y' : 'n') #define TLDEV(type) ((type) == TYPE_DISK || (type) == TYPE_ROM) #define PACKED __attribute__((packed)) struct sg_list { unsigned int address; /* Segment Address */ unsigned int num_bytes; /* Segment Length */ }; /* MailBox SCSI Command Packet */ struct mscp { unsigned char opcode: 3; /* type of command */ unsigned char xdir: 2; /* data transfer direction */ unsigned char dcn: 1; /* disable disconnect */ unsigned char ca: 1; /* use cache (if available) */ unsigned char sg: 1; /* scatter/gather operation */ unsigned char target: 3; /* SCSI target id */ unsigned char channel: 2; /* SCSI channel number */ unsigned char lun: 3; /* SCSI logical unit number */ unsigned int data_address PACKED; /* transfer data pointer */ unsigned int data_len PACKED; /* length in bytes */ unsigned int link_address PACKED; /* for linking command chains */ unsigned char clink_id; /* identifies command in chain */ unsigned char use_sg; /* (if sg is set) 8 bytes per list */ unsigned char sense_len; unsigned char scsi_cdbs_len; /* 6, 10, or 12 */ unsigned char scsi_cdbs[12]; /* SCSI commands */ unsigned char adapter_status; /* non-zero indicates HA error */ unsigned char target_status; /* non-zero indicates target error */ unsigned int sense_addr PACKED; Scsi_Cmnd *SCpnt; unsigned int index; /* cp index */ struct sg_list *sglist; }; struct hostdata { struct mscp cp[MAX_MAILBOXES]; /* Mailboxes for this board */ unsigned int cp_stat[MAX_MAILBOXES]; /* FREE, IN_USE, LOCKED, IN_RESET */ unsigned int last_cp_used; /* Index of last mailbox used */ unsigned int iocount; /* Total i/o done for this board */ int board_number; /* Number of this board */ char board_name[16]; /* Name of this board */ char board_id[256]; /* data from INQUIRY on this board */ int in_reset; /* True if board is doing a reset */ int target_to[MAX_TARGET][MAX_CHANNEL]; /* N. of timeout errors on target */ int target_redo[MAX_TARGET][MAX_CHANNEL]; /* If TRUE redo i/o on target */ unsigned int retries; /* Number of internal retries */ unsigned long last_retried_pid; /* Pid of last retried command */ unsigned char subversion; /* Bus type, either ISA or ESA */ unsigned char heads; unsigned char sectors; /* slot != 0 for the U24F, slot == 0 for both the U14F and U34F */ unsigned char slot; }; static struct Scsi_Host *sh[MAX_BOARDS + 1]; static const char *driver_name = "Ux4F"; static char sha[MAX_BOARDS]; /* Initialize num_boards so that ihdlr can work while detect is in progress */ static unsigned int num_boards = MAX_BOARDS; static unsigned long io_port[] __initdata = { /* Space for MAX_INT_PARAM ports usable while loading as a module */ SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, /* Possible ISA/VESA ports */ 0x330, 0x340, 0x230, 0x240, 0x210, 0x130, 0x140, /* End of list */ 0x0 }; #define HD(board) ((struct hostdata *) &sh[board]->hostdata) #define BN(board) (HD(board)->board_name) #define SWAP_BYTE(x) ((unsigned long)( \ (((unsigned long)(x) & 0x000000ffU) << 24) | \ (((unsigned long)(x) & 0x0000ff00U) << 8) | \ (((unsigned long)(x) & 0x00ff0000U) >> 8) | \ (((unsigned long)(x) & 0xff000000U) >> 24))) #if defined(__BIG_ENDIAN) #define H2DEV(x) SWAP_BYTE(x) #else #define H2DEV(x) (x) #endif #define DEV2H(x) H2DEV(x) #define V2DEV(addr) ((addr) ? H2DEV(virt_to_bus((void *)addr)) : 0) #define DEV2V(addr) ((addr) ? DEV2H(bus_to_virt((unsigned long)addr)) : 0) static void do_interrupt_handler(int, void *, struct pt_regs *); static void flush_dev(Scsi_Device *, unsigned long, unsigned int, unsigned int); static int do_trace = FALSE; static int setup_done = FALSE; static int link_statistics = 0; static int ext_tran = FALSE; #if defined(HAVE_OLD_UX4F_FIRMWARE) static int have_old_firmware = TRUE; #else static int have_old_firmware = FALSE; #endif #if defined(CONFIG_SCSI_U14_34F_LINKED_COMMANDS) static int linked_comm = TRUE; #else static int linked_comm = FALSE; #endif #if defined(CONFIG_SCSI_U14_34F_MAX_TAGS) static int max_queue_depth = CONFIG_SCSI_U14_34F_MAX_TAGS; #else static int max_queue_depth = MAX_CMD_PER_LUN; #endif static void select_queue_depths(struct Scsi_Host *host, Scsi_Device *devlist) { Scsi_Device *dev; int j, ntag = 0, nuntag = 0, tqd, utqd; IRQ_FLAGS IRQ_LOCK_SAVE j = ((struct hostdata *) host->hostdata)->board_number; for(dev = devlist; dev; dev = dev->next) { if (dev->host != host) continue; if (TLDEV(dev->type) && (dev->tagged_supported || linked_comm)) ntag++; else nuntag++; } utqd = MAX_CMD_PER_LUN; tqd = (host->can_queue - utqd * nuntag) / (ntag ? ntag : 1); if (tqd > max_queue_depth) tqd = max_queue_depth; if (tqd < MAX_CMD_PER_LUN) tqd = MAX_CMD_PER_LUN; for(dev = devlist; dev; dev = dev->next) { char *tag_suffix = "", *link_suffix = ""; if (dev->host != host) continue; if (TLDEV(dev->type) && (dev->tagged_supported || linked_comm)) dev->queue_depth = tqd; else dev->queue_depth = utqd; if (TLDEV(dev->type)) { if (linked_comm && dev->queue_depth > 2) link_suffix = ", sorted"; else link_suffix = ", unsorted"; } if (dev->tagged_supported && TLDEV(dev->type) && dev->tagged_queue) tag_suffix = ", tagged"; else if (dev->tagged_supported && TLDEV(dev->type)) tag_suffix = ", untagged"; printk("%s: scsi%d, channel %d, id %d, lun %d, cmds/lun %d%s%s.\n", BN(j), host->host_no, dev->channel, dev->id, dev->lun, dev->queue_depth, link_suffix, tag_suffix); } IRQ_UNLOCK_RESTORE return; } static inline int wait_on_busy(unsigned long iobase, unsigned int loop) { while (inb(iobase + REG_LCL_INTR) & BSY_ASSERTED) { udelay(1L); if (--loop == 0) return TRUE; } return FALSE; } static int board_inquiry(unsigned int j) { struct mscp *cpp; unsigned int time, limit = 0; cpp = &HD(j)->cp[0]; memset(cpp, 0, sizeof(struct mscp)); cpp->opcode = OP_HOST_ADAPTER; cpp->xdir = DTD_IN; cpp->data_address = V2DEV(HD(j)->board_id); cpp->data_len = H2DEV(sizeof(HD(j)->board_id)); cpp->scsi_cdbs_len = 6; cpp->scsi_cdbs[0] = HA_CMD_INQUIRY; if (wait_on_busy(sh[j]->io_port, MAXLOOP)) { printk("%s: board_inquiry, adapter busy.\n", BN(j)); return TRUE; } HD(j)->cp_stat[0] = IGNORE; /* Clear the interrupt indication */ outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR); /* Store pointer in OGM address bytes */ outl(V2DEV(cpp), sh[j]->io_port + REG_OGM); /* Issue OGM interrupt */ outb(CMD_OGM_INTR, sh[j]->io_port + REG_LCL_INTR); SPIN_UNLOCK IRQ_UNLOCK time = jiffies; while ((jiffies - time) < HZ && limit++ < 20000) udelay(100L); IRQ_LOCK SPIN_LOCK if (cpp->adapter_status || HD(j)->cp_stat[0] != FREE) { HD(j)->cp_stat[0] = FREE; printk("%s: board_inquiry, err 0x%x.\n", BN(j), cpp->adapter_status); return TRUE; } return FALSE; } __initfunc (static inline int port_detect \ (unsigned long port_base, unsigned int j, Scsi_Host_Template *tpnt)) { unsigned char irq, dma_channel, subversion, i; unsigned char in_byte; char *bus_type, dma_name[16]; /* Allowed BIOS base addresses (NULL indicates reserved) */ void *bios_segment_table[8] = { NULL, (void *) 0xc4000, (void *) 0xc8000, (void *) 0xcc000, (void *) 0xd0000, (void *) 0xd4000, (void *) 0xd8000, (void *) 0xdc000 }; /* Allowed IRQs */ unsigned char interrupt_table[4] = { 15, 14, 11, 10 }; /* Allowed DMA channels for ISA (0 indicates reserved) */ unsigned char dma_channel_table[4] = { 5, 6, 7, 0 }; /* Head/sector mappings */ struct { unsigned char heads; unsigned char sectors; } mapping_table[4] = { { 16, 63 }, { 64, 32 }, { 64, 63 }, { 64, 32 } }; struct config_1 { unsigned char bios_segment: 3; unsigned char removable_disks_as_fixed: 1; unsigned char interrupt: 2; unsigned char dma_channel: 2; } config_1; struct config_2 { unsigned char ha_scsi_id: 3; unsigned char mapping_mode: 2; unsigned char bios_drive_number: 1; unsigned char tfr_port: 2; } config_2; char name[16]; sprintf(name, "%s%d", driver_name, j); if(check_region(port_base, REGION_SIZE)) { printk("%s: address 0x%03lx in use, skipping probe.\n", name, port_base); return FALSE; } if (inb(port_base + REG_PRODUCT_ID1) != PRODUCT_ID1) return FALSE; in_byte = inb(port_base + REG_PRODUCT_ID2); if ((in_byte & 0xf0) != PRODUCT_ID2) return FALSE; *(char *)&config_1 = inb(port_base + REG_CONFIG1); *(char *)&config_2 = inb(port_base + REG_CONFIG2); irq = interrupt_table[config_1.interrupt]; dma_channel = dma_channel_table[config_1.dma_channel]; subversion = (in_byte & 0x0f); /* Board detected, allocate its IRQ */ if (request_irq(irq, do_interrupt_handler, SA_INTERRUPT | ((subversion == ESA) ? SA_SHIRQ : 0), driver_name, (void *) &sha[j])) { printk("%s: unable to allocate IRQ %u, detaching.\n", name, irq); return FALSE; } if (subversion == ISA && request_dma(dma_channel, driver_name)) { printk("%s: unable to allocate DMA channel %u, detaching.\n", name, dma_channel); free_irq(irq, &sha[j]); return FALSE; } if (have_old_firmware) tpnt->use_clustering = DISABLE_CLUSTERING; #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,101) tpnt->use_new_eh_code = use_new_eh_code; #else use_new_eh_code = FALSE; #endif sh[j] = scsi_register(tpnt, sizeof(struct hostdata)); if (sh[j] == NULL) { printk("%s: unable to register host, detaching.\n", name); free_irq(irq, &sha[j]); if (subversion == ISA) free_dma(dma_channel); return FALSE; } sh[j]->io_port = port_base; sh[j]->unique_id = port_base; sh[j]->n_io_port = REGION_SIZE; sh[j]->base = bios_segment_table[config_1.bios_segment]; sh[j]->irq = irq; sh[j]->sg_tablesize = MAX_SGLIST; sh[j]->this_id = config_2.ha_scsi_id; sh[j]->can_queue = MAX_MAILBOXES; sh[j]->cmd_per_lun = MAX_CMD_PER_LUN; sh[j]->select_queue_depths = select_queue_depths; #if defined(DEBUG_DETECT) { unsigned char sys_mask, lcl_mask; sys_mask = inb(sh[j]->io_port + REG_SYS_MASK); lcl_mask = inb(sh[j]->io_port + REG_LCL_MASK); printk("SYS_MASK 0x%x, LCL_MASK 0x%x.\n", sys_mask, lcl_mask); } #endif /* Probably a bogus host scsi id, set it to the dummy value */ if (sh[j]->this_id == 0) sh[j]->this_id = -1; /* If BIOS is disabled, force enable interrupts */ if (sh[j]->base == 0) outb(CMD_ENA_INTR, sh[j]->io_port + REG_SYS_MASK); /* Register the I/O space that we use */ request_region(sh[j]->io_port, sh[j]->n_io_port, driver_name); memset(HD(j), 0, sizeof(struct hostdata)); HD(j)->heads = mapping_table[config_2.mapping_mode].heads; HD(j)->sectors = mapping_table[config_2.mapping_mode].sectors; HD(j)->subversion = subversion; HD(j)->board_number = j; if (have_old_firmware) sh[j]->sg_tablesize = MAX_SAFE_SGLIST; if (HD(j)->subversion == ESA) { sh[j]->unchecked_isa_dma = FALSE; sh[j]->dma_channel = NO_DMA; sprintf(BN(j), "U34F%d", j); bus_type = "VESA"; } else { sh[j]->wish_block = TRUE; sh[j]->unchecked_isa_dma = TRUE; disable_dma(dma_channel); clear_dma_ff(dma_channel); set_dma_mode(dma_channel, DMA_MODE_CASCADE); enable_dma(dma_channel); sh[j]->dma_channel = dma_channel; sprintf(BN(j), "U14F%d", j); bus_type = "ISA"; } sh[j]->max_channel = MAX_CHANNEL - 1; sh[j]->max_id = MAX_TARGET; sh[j]->max_lun = MAX_LUN; if (HD(j)->subversion == ISA && !board_inquiry(j)) { HD(j)->board_id[40] = 0; if (strcmp(&HD(j)->board_id[32], "06000600")) { printk("%s: %s.\n", BN(j), &HD(j)->board_id[8]); printk("%s: firmware %s is outdated, FW PROM should be 28004-006.\n", BN(j), &HD(j)->board_id[32]); sh[j]->hostt->use_clustering = DISABLE_CLUSTERING; sh[j]->sg_tablesize = MAX_SAFE_SGLIST; } } if (dma_channel == NO_DMA) sprintf(dma_name, "%s", "BMST"); else sprintf(dma_name, "DMA %u", dma_channel); for (i = 0; i < sh[j]->can_queue; i++) if (! ((&HD(j)->cp[i])->sglist = kmalloc( sh[j]->sg_tablesize * sizeof(struct sg_list), (sh[j]->unchecked_isa_dma ? GFP_DMA : 0) | GFP_ATOMIC))) { printk("%s: kmalloc SGlist failed, mbox %d, detaching.\n", BN(j), i); u14_34f_release(sh[j]); return FALSE; } if (max_queue_depth > MAX_TAGGED_CMD_PER_LUN) max_queue_depth = MAX_TAGGED_CMD_PER_LUN; if (max_queue_depth < MAX_CMD_PER_LUN) max_queue_depth = MAX_CMD_PER_LUN; if (j == 0) { printk("UltraStor 14F/34F: Copyright (C) 1994-1998 Dario Ballabio.\n"); printk("%s config options -> of:%c, lc:%c, mq:%d, eh:%c, et:%c.\n", driver_name, YESNO(have_old_firmware), YESNO(linked_comm), max_queue_depth, YESNO(use_new_eh_code), YESNO(ext_tran)); } printk("%s: %s 0x%03lx, BIOS 0x%05x, IRQ %u, %s, SG %d, MB %d.\n", BN(j), bus_type, (unsigned long)sh[j]->io_port, (int)sh[j]->base, sh[j]->irq, dma_name, sh[j]->sg_tablesize, sh[j]->can_queue); if (sh[j]->max_id > 8 || sh[j]->max_lun > 8) printk("%s: wide SCSI support enabled, max_id %u, max_lun %u.\n", BN(j), sh[j]->max_id, sh[j]->max_lun); for (i = 0; i <= sh[j]->max_channel; i++) printk("%s: SCSI channel %u enabled, host target ID %d.\n", BN(j), i, sh[j]->this_id); return TRUE; } __initfunc (void u14_34f_setup(char *str, int *ints)) { int i, argc = ints[0]; char *cur = str, *pc; if (argc > 0) { if (argc > MAX_INT_PARAM) argc = MAX_INT_PARAM; for (i = 0; i < argc; i++) io_port[i] = ints[i + 1]; io_port[i] = 0; setup_done = TRUE; } while (cur && (pc = strchr(cur, ':'))) { int val = 0, c = *++pc; if (c == 'n' || c == 'N') val = FALSE; else if (c == 'y' || c == 'Y') val = TRUE; else val = (int) simple_strtoul(pc, NULL, 0); if (!strncmp(cur, "lc:", 3)) linked_comm = val; else if (!strncmp(cur, "of:", 3)) have_old_firmware = val; else if (!strncmp(cur, "mq:", 3)) max_queue_depth = val; else if (!strncmp(cur, "ls:", 3)) link_statistics = val; else if (!strncmp(cur, "eh:", 3)) use_new_eh_code = val; else if (!strncmp(cur, "et:", 3)) ext_tran = val; if ((cur = strchr(cur, ','))) ++cur; } return; } __initfunc (int u14_34f_detect(Scsi_Host_Template *tpnt)) { unsigned int j = 0, k; IRQ_FLAGS IRQ_LOCK_SAVE tpnt->proc_dir = &proc_scsi_u14_34f; #if defined(MODULE) /* io_port could have been modified when loading as a module */ if(io_port[0] != SKIP) { setup_done = TRUE; io_port[MAX_INT_PARAM] = 0; } #endif for (k = 0; k < MAX_BOARDS + 1; k++) sh[k] = NULL; for (k = 0; io_port[k]; k++) { if (io_port[k] == SKIP) continue; if (j < MAX_BOARDS && port_detect(io_port[k], j, tpnt)) j++; } num_boards = j; IRQ_UNLOCK_RESTORE return j; } static inline void build_sg_list(struct mscp *cpp, Scsi_Cmnd *SCpnt) { unsigned int k, data_len = 0; struct scatterlist *sgpnt; sgpnt = (struct scatterlist *) SCpnt->request_buffer; for (k = 0; k < SCpnt->use_sg; k++) { cpp->sglist[k].address = V2DEV(sgpnt[k].address); cpp->sglist[k].num_bytes = H2DEV(sgpnt[k].length); data_len += sgpnt[k].length; } cpp->use_sg = SCpnt->use_sg; cpp->data_address = V2DEV(cpp->sglist); cpp->data_len = H2DEV(data_len); } static inline int do_qcomm(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) { unsigned int i, j, k; struct mscp *cpp; static const unsigned char data_out_cmds[] = { 0x0a, 0x2a, 0x15, 0x55, 0x04, 0x07, 0x18, 0x1d, 0x24, 0x2e, 0x30, 0x31, 0x32, 0x38, 0x39, 0x3a, 0x3b, 0x3d, 0x3f, 0x40, 0x41, 0x4c, 0xaa, 0xae, 0xb0, 0xb1, 0xb2, 0xb6, 0xea, 0x1b }; static const unsigned char data_none_cmds[] = { 0x01, 0x0b, 0x10, 0x11, 0x13, 0x16, 0x17, 0x19, 0x2b, 0x1e, 0x2c, 0xac, 0x2f, 0xaf, 0x33, 0xb3, 0x35, 0x36, 0x45, 0x47, 0x48, 0x49, 0xa9, 0x4b, 0xa5, 0xa6, 0xb5 }; /* j is the board number */ j = ((struct hostdata *) SCpnt->host->hostdata)->board_number; if (SCpnt->host_scribble) panic("%s: qcomm, pid %ld, SCpnt %p already active.\n", BN(j), SCpnt->pid, SCpnt); /* i is the mailbox number, look for the first free mailbox starting from last_cp_used */ i = HD(j)->last_cp_used + 1; for (k = 0; k < sh[j]->can_queue; k++, i++) { if (i >= sh[j]->can_queue) i = 0; if (HD(j)->cp_stat[i] == FREE) { HD(j)->last_cp_used = i; break; } } if (k == sh[j]->can_queue) { printk("%s: qcomm, no free mailbox.\n", BN(j)); return 1; } /* Set pointer to control packet structure */ cpp = &HD(j)->cp[i]; memset(cpp, 0, sizeof(struct mscp) - sizeof(struct sg_list *)); SCpnt->scsi_done = done; cpp->index = i; SCpnt->host_scribble = (unsigned char *) &cpp->index; if (do_trace) printk("%s: qcomm, mbox %d, target %d.%d:%d, pid %ld.\n", BN(j), i, SCpnt->channel, SCpnt->target, SCpnt->lun, SCpnt->pid); cpp->xdir = DTD_IN; for (k = 0; k < ARRAY_SIZE(data_out_cmds); k++) if (SCpnt->cmnd[0] == data_out_cmds[k]) { cpp->xdir = DTD_OUT; break; } if (cpp->xdir == DTD_IN) for (k = 0; k < ARRAY_SIZE(data_none_cmds); k++) if (SCpnt->cmnd[0] == data_none_cmds[k]) { cpp->xdir = DTD_NONE; break; } cpp->opcode = OP_SCSI; cpp->channel = SCpnt->channel; cpp->target = SCpnt->target; cpp->lun = SCpnt->lun; cpp->SCpnt = SCpnt; cpp->sense_addr = V2DEV(SCpnt->sense_buffer); cpp->sense_len = sizeof SCpnt->sense_buffer; if (SCpnt->use_sg) { cpp->sg = TRUE; build_sg_list(cpp, SCpnt); } else { cpp->data_address = V2DEV(SCpnt->request_buffer); cpp->data_len = H2DEV(SCpnt->request_bufflen); } cpp->scsi_cdbs_len = SCpnt->cmd_len; memcpy(cpp->scsi_cdbs, SCpnt->cmnd, cpp->scsi_cdbs_len); if (linked_comm && SCpnt->device->queue_depth > 2 && TLDEV(SCpnt->device->type)) { HD(j)->cp_stat[i] = READY; flush_dev(SCpnt->device, SCpnt->request.sector, j, FALSE); return 0; } if (wait_on_busy(sh[j]->io_port, MAXLOOP)) { SCpnt->host_scribble = NULL; printk("%s: qcomm, target %d.%d:%d, pid %ld, adapter busy.\n", BN(j), SCpnt->channel, SCpnt->target, SCpnt->lun, SCpnt->pid); return 1; } /* Store pointer in OGM address bytes */ outl(V2DEV(cpp), sh[j]->io_port + REG_OGM); /* Issue OGM interrupt */ outb(CMD_OGM_INTR, sh[j]->io_port + REG_LCL_INTR); HD(j)->cp_stat[i] = IN_USE; return 0; } int u14_34f_queuecommand(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) { int rtn; IRQ_FLAGS IRQ_LOCK_SAVE rtn = do_qcomm(SCpnt, done); IRQ_UNLOCK_RESTORE return rtn; } static inline int do_old_abort(Scsi_Cmnd *SCarg) { unsigned int i, j; j = ((struct hostdata *) SCarg->host->hostdata)->board_number; if (SCarg->host_scribble == NULL || (SCarg->serial_number_at_timeout && (SCarg->serial_number != SCarg->serial_number_at_timeout))) { printk("%s: abort, target %d.%d:%d, pid %ld inactive.\n", BN(j), SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid); return SCSI_ABORT_NOT_RUNNING; } i = *(unsigned int *)SCarg->host_scribble; printk("%s: abort, mbox %d, target %d.%d:%d, pid %ld.\n", BN(j), i, SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid); if (i >= sh[j]->can_queue) panic("%s: abort, invalid SCarg->host_scribble.\n", BN(j)); if (wait_on_busy(sh[j]->io_port, MAXLOOP)) { printk("%s: abort, timeout error.\n", BN(j)); return SCSI_ABORT_ERROR; } if (HD(j)->cp_stat[i] == FREE) { printk("%s: abort, mbox %d is free.\n", BN(j), i); return SCSI_ABORT_NOT_RUNNING; } if (HD(j)->cp_stat[i] == IN_USE) { printk("%s: abort, mbox %d is in use.\n", BN(j), i); if (SCarg != HD(j)->cp[i].SCpnt) panic("%s: abort, mbox %d, SCarg %p, cp SCpnt %p.\n", BN(j), i, SCarg, HD(j)->cp[i].SCpnt); if (inb(sh[j]->io_port + REG_SYS_INTR) & IRQ_ASSERTED) printk("%s: abort, mbox %d, interrupt pending.\n", BN(j), i); return SCSI_ABORT_SNOOZE; } if (HD(j)->cp_stat[i] == IN_RESET) { printk("%s: abort, mbox %d is in reset.\n", BN(j), i); return SCSI_ABORT_ERROR; } if (HD(j)->cp_stat[i] == LOCKED) { printk("%s: abort, mbox %d is locked.\n", BN(j), i); return SCSI_ABORT_NOT_RUNNING; } if (HD(j)->cp_stat[i] == READY || HD(j)->cp_stat[i] == ABORTING) { SCarg->result = DID_ABORT << 16; SCarg->host_scribble = NULL; HD(j)->cp_stat[i] = FREE; printk("%s, abort, mbox %d ready, DID_ABORT, pid %ld done.\n", BN(j), i, SCarg->pid); SCarg->scsi_done(SCarg); return SCSI_ABORT_SUCCESS; } panic("%s: abort, mbox %d, invalid cp_stat.\n", BN(j), i); } int u14_34f_old_abort(Scsi_Cmnd *SCarg) { int rtn; IRQ_FLAGS IRQ_LOCK_SAVE rtn = do_old_abort(SCarg); IRQ_UNLOCK_RESTORE return rtn; } #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,101) static inline int do_abort(Scsi_Cmnd *SCarg) { unsigned int i, j; j = ((struct hostdata *) SCarg->host->hostdata)->board_number; if (SCarg->host_scribble == NULL) { printk("%s: abort, target %d.%d:%d, pid %ld inactive.\n", BN(j), SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid); return SUCCESS; } i = *(unsigned int *)SCarg->host_scribble; printk("%s: abort, mbox %d, target %d.%d:%d, pid %ld.\n", BN(j), i, SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid); if (i >= sh[j]->can_queue) panic("%s: abort, invalid SCarg->host_scribble.\n", BN(j)); if (wait_on_busy(sh[j]->io_port, MAXLOOP)) { printk("%s: abort, timeout error.\n", BN(j)); return FAILED; } if (HD(j)->cp_stat[i] == FREE) { printk("%s: abort, mbox %d is free.\n", BN(j), i); return SUCCESS; } if (HD(j)->cp_stat[i] == IN_USE) { printk("%s: abort, mbox %d is in use.\n", BN(j), i); if (SCarg != HD(j)->cp[i].SCpnt) panic("%s: abort, mbox %d, SCarg %p, cp SCpnt %p.\n", BN(j), i, SCarg, HD(j)->cp[i].SCpnt); if (inb(sh[j]->io_port + REG_SYS_INTR) & IRQ_ASSERTED) printk("%s: abort, mbox %d, interrupt pending.\n", BN(j), i); if (SCarg->eh_state == SCSI_STATE_TIMEOUT) { SCarg->host_scribble = NULL; HD(j)->cp_stat[i] = FREE; printk("%s, abort, mbox %d, eh_state timeout, pid %ld.\n", BN(j), i, SCarg->pid); return SUCCESS; } return FAILED; } if (HD(j)->cp_stat[i] == IN_RESET) { printk("%s: abort, mbox %d is in reset.\n", BN(j), i); return FAILED; } if (HD(j)->cp_stat[i] == LOCKED) { printk("%s: abort, mbox %d is locked.\n", BN(j), i); return SUCCESS; } if (HD(j)->cp_stat[i] == READY || HD(j)->cp_stat[i] == ABORTING) { SCarg->result = DID_ABORT << 16; SCarg->host_scribble = NULL; HD(j)->cp_stat[i] = FREE; printk("%s, abort, mbox %d ready, DID_ABORT, pid %ld done.\n", BN(j), i, SCarg->pid); SCarg->scsi_done(SCarg); return SUCCESS; } panic("%s: abort, mbox %d, invalid cp_stat.\n", BN(j), i); } int u14_34f_abort(Scsi_Cmnd *SCarg) { return do_abort(SCarg); } #endif /* new_eh_code */ static inline int do_old_reset(Scsi_Cmnd *SCarg) { unsigned int i, j, time, k, c, limit = 0; int arg_done = FALSE; Scsi_Cmnd *SCpnt; j = ((struct hostdata *) SCarg->host->hostdata)->board_number; printk("%s: reset, enter, target %d.%d:%d, pid %ld.\n", BN(j), SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid); if (SCarg->host_scribble == NULL) printk("%s: reset, pid %ld inactive.\n", BN(j), SCarg->pid); if (SCarg->serial_number_at_timeout && (SCarg->serial_number != SCarg->serial_number_at_timeout)) { printk("%s: reset, pid %ld, reset not running.\n", BN(j), SCarg->pid); return SCSI_RESET_NOT_RUNNING; } if (HD(j)->in_reset) { printk("%s: reset, exit, already in reset.\n", BN(j)); return SCSI_RESET_ERROR; } if (wait_on_busy(sh[j]->io_port, MAXLOOP)) { printk("%s: reset, exit, timeout error.\n", BN(j)); return SCSI_RESET_ERROR; } HD(j)->retries = 0; for (c = 0; c <= sh[j]->max_channel; c++) for (k = 0; k < sh[j]->max_id; k++) { HD(j)->target_redo[k][c] = TRUE; HD(j)->target_to[k][c] = 0; } for (i = 0; i < sh[j]->can_queue; i++) { if (HD(j)->cp_stat[i] == FREE) continue; if (HD(j)->cp_stat[i] == LOCKED) { HD(j)->cp_stat[i] = FREE; printk("%s: reset, locked mbox %d forced free.\n", BN(j), i); continue; } if (!(SCpnt = HD(j)->cp[i].SCpnt)) panic("%s: reset, mbox %d, SCpnt == NULL.\n", BN(j), i); if (HD(j)->cp_stat[i] == READY || HD(j)->cp_stat[i] == ABORTING) { HD(j)->cp_stat[i] = ABORTING; printk("%s: reset, mbox %d aborting, pid %ld.\n", BN(j), i, SCpnt->pid); } else { HD(j)->cp_stat[i] = IN_RESET; printk("%s: reset, mbox %d in reset, pid %ld.\n", BN(j), i, SCpnt->pid); } if (SCpnt->host_scribble == NULL) panic("%s: reset, mbox %d, garbled SCpnt.\n", BN(j), i); if (*(unsigned int *)SCpnt->host_scribble != i) panic("%s: reset, mbox %d, index mismatch.\n", BN(j), i); if (SCpnt->scsi_done == NULL) panic("%s: reset, mbox %d, SCpnt->scsi_done == NULL.\n", BN(j), i); if (SCpnt == SCarg) arg_done = TRUE; } if (wait_on_busy(sh[j]->io_port, MAXLOOP)) { printk("%s: reset, cannot reset, timeout error.\n", BN(j)); return SCSI_RESET_ERROR; } outb(CMD_RESET, sh[j]->io_port + REG_LCL_INTR); printk("%s: reset, board reset done, enabling interrupts.\n", BN(j)); #if defined(DEBUG_RESET) do_trace = TRUE; #endif HD(j)->in_reset = TRUE; SPIN_UNLOCK IRQ_UNLOCK time = jiffies; while ((jiffies - time) < (10 * HZ) && limit++ < 200000) udelay(100L); IRQ_LOCK SPIN_LOCK printk("%s: reset, interrupts disabled, loops %d.\n", BN(j), limit); for (i = 0; i < sh[j]->can_queue; i++) { if (HD(j)->cp_stat[i] == IN_RESET) { SCpnt = HD(j)->cp[i].SCpnt; SCpnt->result = DID_RESET << 16; SCpnt->host_scribble = NULL; /* This mailbox is still waiting for its interrupt */ HD(j)->cp_stat[i] = LOCKED; printk("%s, reset, mbox %d locked, DID_RESET, pid %ld done.\n", BN(j), i, SCpnt->pid); } else if (HD(j)->cp_stat[i] == ABORTING) { SCpnt = HD(j)->cp[i].SCpnt; SCpnt->result = DID_RESET << 16; SCpnt->host_scribble = NULL; /* This mailbox was never queued to the adapter */ HD(j)->cp_stat[i] = FREE; printk("%s, reset, mbox %d aborting, DID_RESET, pid %ld done.\n", BN(j), i, SCpnt->pid); } else /* Any other mailbox has already been set free by interrupt */ continue; SCpnt->scsi_done(SCpnt); IRQ_LOCK } HD(j)->in_reset = FALSE; do_trace = FALSE; if (arg_done) { printk("%s: reset, exit, success.\n", BN(j)); return SCSI_RESET_SUCCESS; } else { printk("%s: reset, exit, wakeup.\n", BN(j)); return SCSI_RESET_PUNT; } } int u14_34f_old_reset(Scsi_Cmnd *SCarg, unsigned int reset_flags) { int rtn; IRQ_FLAGS IRQ_LOCK_SAVE rtn = do_old_reset(SCarg); IRQ_UNLOCK_RESTORE return rtn; } #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,101) static inline int do_reset(Scsi_Cmnd *SCarg) { unsigned int i, j, time, k, c, limit = 0; int arg_done = FALSE; Scsi_Cmnd *SCpnt; j = ((struct hostdata *) SCarg->host->hostdata)->board_number; printk("%s: reset, enter, target %d.%d:%d, pid %ld.\n", BN(j), SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid); if (SCarg->host_scribble == NULL) printk("%s: reset, pid %ld inactive.\n", BN(j), SCarg->pid); if (HD(j)->in_reset) { printk("%s: reset, exit, already in reset.\n", BN(j)); return FAILED; } if (wait_on_busy(sh[j]->io_port, MAXLOOP)) { printk("%s: reset, exit, timeout error.\n", BN(j)); return FAILED; } HD(j)->retries = 0; for (c = 0; c <= sh[j]->max_channel; c++) for (k = 0; k < sh[j]->max_id; k++) { HD(j)->target_redo[k][c] = TRUE; HD(j)->target_to[k][c] = 0; } for (i = 0; i < sh[j]->can_queue; i++) { if (HD(j)->cp_stat[i] == FREE) continue; if (HD(j)->cp_stat[i] == LOCKED) { HD(j)->cp_stat[i] = FREE; printk("%s: reset, locked mbox %d forced free.\n", BN(j), i); continue; } if (!(SCpnt = HD(j)->cp[i].SCpnt)) panic("%s: reset, mbox %d, SCpnt == NULL.\n", BN(j), i); if (HD(j)->cp_stat[i] == READY || HD(j)->cp_stat[i] == ABORTING) { HD(j)->cp_stat[i] = ABORTING; printk("%s: reset, mbox %d aborting, pid %ld.\n", BN(j), i, SCpnt->pid); } else { HD(j)->cp_stat[i] = IN_RESET; printk("%s: reset, mbox %d in reset, pid %ld.\n", BN(j), i, SCpnt->pid); } if (SCpnt->host_scribble == NULL) panic("%s: reset, mbox %d, garbled SCpnt.\n", BN(j), i); if (*(unsigned int *)SCpnt->host_scribble != i) panic("%s: reset, mbox %d, index mismatch.\n", BN(j), i); if (SCpnt->scsi_done == NULL) panic("%s: reset, mbox %d, SCpnt->scsi_done == NULL.\n", BN(j), i); if (SCpnt == SCarg) arg_done = TRUE; } if (wait_on_busy(sh[j]->io_port, MAXLOOP)) { printk("%s: reset, cannot reset, timeout error.\n", BN(j)); return FAILED; } outb(CMD_RESET, sh[j]->io_port + REG_LCL_INTR); printk("%s: reset, board reset done, enabling interrupts.\n", BN(j)); #if defined(DEBUG_RESET) do_trace = TRUE; #endif HD(j)->in_reset = TRUE; SPIN_UNLOCK IRQ_UNLOCK time = jiffies; while ((jiffies - time) < (10 * HZ) && limit++ < 200000) udelay(100L); IRQ_LOCK SPIN_LOCK printk("%s: reset, interrupts disabled, loops %d.\n", BN(j), limit); for (i = 0; i < sh[j]->can_queue; i++) { if (HD(j)->cp_stat[i] == IN_RESET) { SCpnt = HD(j)->cp[i].SCpnt; SCpnt->result = DID_RESET << 16; SCpnt->host_scribble = NULL; /* This mailbox is still waiting for its interrupt */ HD(j)->cp_stat[i] = LOCKED; printk("%s, reset, mbox %d locked, DID_RESET, pid %ld done.\n", BN(j), i, SCpnt->pid); } else if (HD(j)->cp_stat[i] == ABORTING) { SCpnt = HD(j)->cp[i].SCpnt; SCpnt->result = DID_RESET << 16; SCpnt->host_scribble = NULL; /* This mailbox was never queued to the adapter */ HD(j)->cp_stat[i] = FREE; printk("%s, reset, mbox %d aborting, DID_RESET, pid %ld done.\n", BN(j), i, SCpnt->pid); } else /* Any other mailbox has already been set free by interrupt */ continue; SCpnt->scsi_done(SCpnt); IRQ_LOCK } HD(j)->in_reset = FALSE; do_trace = FALSE; if (arg_done) printk("%s: reset, exit, pid %ld done.\n", BN(j), SCarg->pid); else printk("%s: reset, exit.\n", BN(j)); return SUCCESS; } int u14_34f_reset(Scsi_Cmnd *SCarg) { return do_reset(SCarg); } #endif /* new_eh_code */ int u14_34f_biosparam(Disk *disk, kdev_t dev, int *dkinfo) { unsigned int j = 0; int size = disk->capacity; dkinfo[0] = HD(j)->heads; dkinfo[1] = HD(j)->sectors; dkinfo[2] = size / (HD(j)->heads * HD(j)->sectors); if (ext_tran && (scsicam_bios_param(disk, dev, dkinfo) < 0)) { dkinfo[0] = 255; dkinfo[1] = 63; dkinfo[2] = size / (dkinfo[0] * dkinfo[1]); } #if defined (DEBUG_GEOMETRY) printk ("%s: biosparam, head=%d, sec=%d, cyl=%d.\n", driver_name, dkinfo[0], dkinfo[1], dkinfo[2]); #endif return FALSE; } static void sort(unsigned long sk[], unsigned int da[], unsigned int n, unsigned int rev) { unsigned int i, j, k, y; unsigned long x; for (i = 0; i < n - 1; i++) { k = i; for (j = k + 1; j < n; j++) if (rev) { if (sk[j] > sk[k]) k = j; } else { if (sk[j] < sk[k]) k = j; } if (k != i) { x = sk[k]; sk[k] = sk[i]; sk[i] = x; y = da[k]; da[k] = da[i]; da[i] = y; } } return; } static inline int reorder(unsigned int j, unsigned long cursec, unsigned int ihdlr, unsigned int il[], unsigned int n_ready) { Scsi_Cmnd *SCpnt; struct mscp *cpp; unsigned int k, n; unsigned int rev = FALSE, s = TRUE, r = TRUE; unsigned int input_only = TRUE, overlap = FALSE; unsigned long sl[n_ready], pl[n_ready], ll[n_ready]; unsigned long maxsec = 0, minsec = ULONG_MAX, seek = 0, iseek = 0; unsigned long ioseek = 0; static unsigned int flushcount = 0, batchcount = 0, sortcount = 0; static unsigned int readycount = 0, ovlcount = 0, inputcount = 0; static unsigned int readysorted = 0, revcount = 0; static unsigned long seeksorted = 0, seeknosort = 0; if (link_statistics && !(++flushcount % link_statistics)) printk("fc %d bc %d ic %d oc %d rc %d rs %d sc %d re %d"\ " av %ldK as %ldK.\n", flushcount, batchcount, inputcount, ovlcount, readycount, readysorted, sortcount, revcount, seeknosort / (readycount + 1), seeksorted / (readycount + 1)); if (n_ready <= 1) return FALSE; for (n = 0; n < n_ready; n++) { k = il[n]; cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt; if (!(cpp->xdir == DTD_IN)) input_only = FALSE; if (SCpnt->request.sector < minsec) minsec = SCpnt->request.sector; if (SCpnt->request.sector > maxsec) maxsec = SCpnt->request.sector; sl[n] = SCpnt->request.sector; ioseek += SCpnt->request.nr_sectors; if (!n) continue; if (sl[n] < sl[n - 1]) s = FALSE; if (sl[n] > sl[n - 1]) r = FALSE; if (link_statistics) { if (sl[n] > sl[n - 1]) seek += sl[n] - sl[n - 1]; else seek += sl[n - 1] - sl[n]; } } if (link_statistics) { if (cursec > sl[0]) seek += cursec - sl[0]; else seek += sl[0] - cursec; } if (cursec > ((maxsec + minsec) / 2)) rev = TRUE; if (ioseek > ((maxsec - minsec) / 2)) rev = FALSE; if (!((rev && r) || (!rev && s))) sort(sl, il, n_ready, rev); if (!input_only) for (n = 0; n < n_ready; n++) { k = il[n]; cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt; ll[n] = SCpnt->request.nr_sectors; pl[n] = SCpnt->pid; if (!n) continue; if ((sl[n] == sl[n - 1]) || (!rev && ((sl[n - 1] + ll[n - 1]) > sl[n])) || (rev && ((sl[n] + ll[n]) > sl[n - 1]))) overlap = TRUE; } if (overlap) sort(pl, il, n_ready, FALSE); if (link_statistics) { if (cursec > sl[0]) iseek = cursec - sl[0]; else iseek = sl[0] - cursec; batchcount++; readycount += n_ready, seeknosort += seek / 1024; if (input_only) inputcount++; if (overlap) { ovlcount++; seeksorted += iseek / 1024; } else seeksorted += (iseek + maxsec - minsec) / 1024; if (rev && !r) { revcount++; readysorted += n_ready; } if (!rev && !s) { sortcount++; readysorted += n_ready; } } #if defined(DEBUG_LINKED_COMMANDS) if (link_statistics && (overlap || !(flushcount % link_statistics))) for (n = 0; n < n_ready; n++) { k = il[n]; cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt; printk("%s %d.%d:%d pid %ld mb %d fc %d nr %d sec %ld ns %ld"\ " cur %ld s:%c r:%c rev:%c in:%c ov:%c xd %d.\n", (ihdlr ? "ihdlr" : "qcomm"), SCpnt->channel, SCpnt->target, SCpnt->lun, SCpnt->pid, k, flushcount, n_ready, SCpnt->request.sector, SCpnt->request.nr_sectors, cursec, YESNO(s), YESNO(r), YESNO(rev), YESNO(input_only), YESNO(overlap), cpp->xdir); } #endif return overlap; } static void flush_dev(Scsi_Device *dev, unsigned long cursec, unsigned int j, unsigned int ihdlr) { Scsi_Cmnd *SCpnt; struct mscp *cpp; unsigned int k, n, n_ready = 0, il[MAX_MAILBOXES]; for (k = 0; k < sh[j]->can_queue; k++) { if (HD(j)->cp_stat[k] != READY && HD(j)->cp_stat[k] != IN_USE) continue; cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt; if (SCpnt->device != dev) continue; if (HD(j)->cp_stat[k] == IN_USE) return; il[n_ready++] = k; } if (reorder(j, cursec, ihdlr, il, n_ready)) n_ready = 1; for (n = 0; n < n_ready; n++) { k = il[n]; cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt; if (wait_on_busy(sh[j]->io_port, MAXLOOP)) { printk("%s: %s, target %d.%d:%d, pid %ld, mbox %d, adapter"\ " busy, will abort.\n", BN(j), (ihdlr ? "ihdlr" : "qcomm"), SCpnt->channel, SCpnt->target, SCpnt->lun, SCpnt->pid, k); HD(j)->cp_stat[k] = ABORTING; continue; } outl(V2DEV(cpp), sh[j]->io_port + REG_OGM); outb(CMD_OGM_INTR, sh[j]->io_port + REG_LCL_INTR); HD(j)->cp_stat[k] = IN_USE; } } static inline void ihdlr(int irq, unsigned int j) { Scsi_Cmnd *SCpnt; unsigned int i, k, c, status, tstatus, reg, ret; struct mscp *spp, *cpp; if (sh[j]->irq != irq) panic("%s: ihdlr, irq %d, sh[j]->irq %d.\n", BN(j), irq, sh[j]->irq); /* Check if this board need to be serviced */ if (!((reg = inb(sh[j]->io_port + REG_SYS_INTR)) & IRQ_ASSERTED)) return; HD(j)->iocount++; if (do_trace) printk("%s: ihdlr, enter, irq %d, count %d.\n", BN(j), irq, HD(j)->iocount); /* Check if this board is still busy */ if (wait_on_busy(sh[j]->io_port, 20 * MAXLOOP)) { outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR); printk("%s: ihdlr, busy timeout error, irq %d, reg 0x%x, count %d.\n", BN(j), irq, reg, HD(j)->iocount); return; } spp = (struct mscp *)DEV2V(ret = inl(sh[j]->io_port + REG_ICM)); cpp = spp; /* Clear interrupt pending flag */ outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR); #if defined(DEBUG_GENERATE_ABORTS) if ((HD(j)->iocount > 500) && ((HD(j)->iocount % 500) < 3)) return; #endif /* Find the mailbox to be serviced on this board */ i = cpp - HD(j)->cp; if (cpp < HD(j)->cp || cpp >= HD(j)->cp + sh[j]->can_queue || i >= sh[j]->can_queue) panic("%s: ihdlr, invalid mscp bus address %p, cp0 %p.\n", BN(j), (void *)ret, HD(j)->cp); if (HD(j)->cp_stat[i] == IGNORE) { HD(j)->cp_stat[i] = FREE; return; } else if (HD(j)->cp_stat[i] == LOCKED) { HD(j)->cp_stat[i] = FREE; printk("%s: ihdlr, mbox %d unlocked, count %d.\n", BN(j), i, HD(j)->iocount); return; } else if (HD(j)->cp_stat[i] == FREE) { printk("%s: ihdlr, mbox %d is free, count %d.\n", BN(j), i, HD(j)->iocount); return; } else if (HD(j)->cp_stat[i] == IN_RESET) printk("%s: ihdlr, mbox %d is in reset.\n", BN(j), i); else if (HD(j)->cp_stat[i] != IN_USE) panic("%s: ihdlr, mbox %d, invalid cp_stat: %d.\n", BN(j), i, HD(j)->cp_stat[i]); HD(j)->cp_stat[i] = FREE; SCpnt = cpp->SCpnt; if (SCpnt == NULL) panic("%s: ihdlr, mbox %d, SCpnt == NULL.\n", BN(j), i); if (SCpnt->host_scribble == NULL) panic("%s: ihdlr, mbox %d, pid %ld, SCpnt %p garbled.\n", BN(j), i, SCpnt->pid, SCpnt); if (*(unsigned int *)SCpnt->host_scribble != i) panic("%s: ihdlr, mbox %d, pid %ld, index mismatch %d.\n", BN(j), i, SCpnt->pid, *(unsigned int *)SCpnt->host_scribble); if (linked_comm && SCpnt->device->queue_depth > 2 && TLDEV(SCpnt->device->type)) flush_dev(SCpnt->device, SCpnt->request.sector, j, TRUE); tstatus = status_byte(spp->target_status); #if defined(DEBUG_GENERATE_ERRORS) if ((HD(j)->iocount > 500) && ((HD(j)->iocount % 200) < 2)) spp->adapter_status = 0x01; #endif switch (spp->adapter_status) { case ASOK: /* status OK */ /* Forces a reset if a disk drive keeps returning BUSY */ if (tstatus == BUSY && SCpnt->device->type != TYPE_TAPE) status = DID_ERROR << 16; /* If there was a bus reset, redo operation on each target */ else if (tstatus != GOOD && SCpnt->device->type == TYPE_DISK && HD(j)->target_redo[SCpnt->target][SCpnt->channel]) status = DID_BUS_BUSY << 16; /* Works around a flaw in scsi.c */ else if (tstatus == CHECK_CONDITION && SCpnt->device->type == TYPE_DISK && (SCpnt->sense_buffer[2] & 0xf) == RECOVERED_ERROR) status = DID_BUS_BUSY << 16; else status = DID_OK << 16; if (tstatus == GOOD) HD(j)->target_redo[SCpnt->target][SCpnt->channel] = FALSE; if (spp->target_status && SCpnt->device->type == TYPE_DISK) printk("%s: ihdlr, target %d.%d:%d, pid %ld, "\ "target_status 0x%x, sense key 0x%x.\n", BN(j), SCpnt->channel, SCpnt->target, SCpnt->lun, SCpnt->pid, spp->target_status, SCpnt->sense_buffer[2]); HD(j)->target_to[SCpnt->target][SCpnt->channel] = 0; if (HD(j)->last_retried_pid == SCpnt->pid) HD(j)->retries = 0; break; case ASST: /* Selection Time Out */ if (HD(j)->target_to[SCpnt->target][SCpnt->channel] > 1) status = DID_ERROR << 16; else { status = DID_TIME_OUT << 16; HD(j)->target_to[SCpnt->target][SCpnt->channel]++; } break; /* Perform a limited number of internal retries */ case 0x93: /* Unexpected bus free */ case 0x94: /* Target bus phase sequence failure */ case 0x96: /* Illegal SCSI command */ case 0xa3: /* SCSI bus reset error */ for (c = 0; c <= sh[j]->max_channel; c++) for (k = 0; k < sh[j]->max_id; k++) HD(j)->target_redo[k][c] = TRUE; case 0x92: /* Data over/under-run */ if (SCpnt->device->type != TYPE_TAPE && HD(j)->retries < MAX_INTERNAL_RETRIES) { #if defined(DID_SOFT_ERROR) status = DID_SOFT_ERROR << 16; #else status = DID_BUS_BUSY << 16; #endif HD(j)->retries++; HD(j)->last_retried_pid = SCpnt->pid; } else status = DID_ERROR << 16; break; case 0x01: /* Invalid command */ case 0x02: /* Invalid parameters */ case 0x03: /* Invalid data list */ case 0x84: /* SCSI bus abort error */ case 0x9b: /* Auto request sense error */ case 0x9f: /* Unexpected command complete message error */ case 0xff: /* Invalid parameter in the S/G list */ default: status = DID_ERROR << 16; break; } SCpnt->result = status | spp->target_status; #if defined(DEBUG_INTERRUPT) if (SCpnt->result || do_trace) #else if ((spp->adapter_status != ASOK && HD(j)->iocount > 1000) || (spp->adapter_status != ASOK && spp->adapter_status != ASST && HD(j)->iocount <= 1000) || do_trace || msg_byte(spp->target_status)) #endif printk("%s: ihdlr, mbox %2d, err 0x%x:%x,"\ " target %d.%d:%d, pid %ld, reg 0x%x, count %d.\n", BN(j), i, spp->adapter_status, spp->target_status, SCpnt->channel, SCpnt->target, SCpnt->lun, SCpnt->pid, reg, HD(j)->iocount); /* Set the command state to inactive */ SCpnt->host_scribble = NULL; SCpnt->scsi_done(SCpnt); if (do_trace) printk("%s: ihdlr, exit, irq %d, count %d.\n", BN(j), irq, HD(j)->iocount); return; } static void do_interrupt_handler(int irq, void *shap, struct pt_regs *regs) { unsigned int j; IRQ_FLAGS SPIN_FLAGS /* Check if the interrupt must be processed by this handler */ if ((j = (unsigned int)((char *)shap - sha)) >= num_boards) return; SPIN_LOCK_SAVE IRQ_LOCK_SAVE ihdlr(irq, j); IRQ_UNLOCK_RESTORE SPIN_UNLOCK_RESTORE } int u14_34f_release(struct Scsi_Host *shpnt) { unsigned int i, j; IRQ_FLAGS IRQ_LOCK_SAVE for (j = 0; sh[j] != NULL && sh[j] != shpnt; j++); if (sh[j] == NULL) panic("%s: release, invalid Scsi_Host pointer.\n", driver_name); for (i = 0; i < sh[j]->can_queue; i++) if ((&HD(j)->cp[i])->sglist) kfree((&HD(j)->cp[i])->sglist); free_irq(sh[j]->irq, &sha[j]); if (sh[j]->dma_channel != NO_DMA) free_dma(sh[j]->dma_channel); release_region(sh[j]->io_port, sh[j]->n_io_port); scsi_unregister(sh[j]); IRQ_UNLOCK_RESTORE return FALSE; } #if defined(MODULE) Scsi_Host_Template driver_template = ULTRASTOR_14_34F; #include "scsi_module.c" #endif
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