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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [scsi/] [i91uscsi.c] - Rev 1765
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/************************************************************************** * Initio 9100 device driver for Linux. * * Copyright (c) 1994-1998 Initio Corporation * Copyright (c) 1998 Bas Vermeulen <bvermeul@blackstar.xs4all.nl> * All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * * -------------------------------------------------------------------------- * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification, immediately at the beginning of the file. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * Where this Software is combined with software released under the terms of * the GNU Public License ("GPL") and the terms of the GPL would require the * combined work to also be released under the terms of the GPL, the terms * and conditions of this License will apply in addition to those of the * GPL with the exception of any terms or conditions of this License that * conflict with, or are expressly prohibited by, the GPL. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * ************************************************************************ Module: i91uscsi.c Description: PCI I/F for INI-910 SCSI Bus Master Controller Revision History: 11/09/94 Tim Chen, Initiali Version 0.90A 01/17/95 TC, release ver 1.01 02/09/95 TC modify ReadPCIConfig, try both mechanisms; 02/15/95 TC add support for INI-9100W 06/04/96 HC, Change to fit LINUX from jaspci.c 11/18/96 HC, Port for tulip 07/08/98 hc, Support 0002134A 07/23/98 wh, Change the abort_srb routine. 09/16/98 hl, Support ALPHA, Rewrite the returnNumberAdapters <01> 12/09/98 bv, Removed unused code, changed tul_se2_wait to use udelay(30) and tul_do_pause to enable interrupts for >= 2.1.95 12/13/98 bv, Use spinlocks instead of cli() for serialized access to HCS_Semaph, HCS_FirstAvail and HCS_LastAvail members of the HCS structure. 01/09/98 bv, Fix a deadlock on SMP system. **********************************************************************/ #define DEBUG_INTERRUPT 0 #define DEBUG_QUEUE 0 #define DEBUG_STATE 0 #define INT_DISC 0 #ifndef CVT_LINUX_VERSION #define CVT_LINUX_VERSION(V,P,S) (V * 65536 + P * 256 + S) #endif #ifndef LINUX_VERSION_CODE #include <linux/version.h> #endif #include <linux/sched.h> #include <linux/delay.h> #include <linux/blk.h> #include <asm/io.h> #include "i91uscsi.h" /*--- external functions --*/ static void tul_se2_wait(void); /*--- forward refrence ---*/ static SCB *tul_find_busy_scb(HCS * pCurHcb, WORD tarlun); static SCB *tul_find_done_scb(HCS * pCurHcb); static int tulip_main(HCS * pCurHcb); static int tul_next_state(HCS * pCurHcb); static int tul_state_1(HCS * pCurHcb); static int tul_state_2(HCS * pCurHcb); static int tul_state_3(HCS * pCurHcb); static int tul_state_4(HCS * pCurHcb); static int tul_state_5(HCS * pCurHcb); static int tul_state_6(HCS * pCurHcb); static int tul_state_7(HCS * pCurHcb); static int tul_xfer_data_in(HCS * pCurHcb); static int tul_xfer_data_out(HCS * pCurHcb); static int tul_xpad_in(HCS * pCurHcb); static int tul_xpad_out(HCS * pCurHcb); static int tul_status_msg(HCS * pCurHcb); static int tul_msgin(HCS * pCurHcb); static int tul_msgin_sync(HCS * pCurHcb); static int tul_msgin_accept(HCS * pCurHcb); static int tul_msgout_reject(HCS * pCurHcb); static int tul_msgin_extend(HCS * pCurHcb); static int tul_msgout_ide(HCS * pCurHcb); static int tul_msgout_abort_targ(HCS * pCurHcb); static int tul_msgout_abort_tag(HCS * pCurHcb); static int tul_bus_device_reset(HCS * pCurHcb); static void tul_select_atn(HCS * pCurHcb, SCB * pCurScb); static void tul_select_atn3(HCS * pCurHcb, SCB * pCurScb); static void tul_select_atn_stop(HCS * pCurHcb, SCB * pCurScb); static int int_tul_busfree(HCS * pCurHcb); int int_tul_scsi_rst(HCS * pCurHcb); static int int_tul_bad_seq(HCS * pCurHcb); static int int_tul_resel(HCS * pCurHcb); static int tul_sync_done(HCS * pCurHcb); static int wdtr_done(HCS * pCurHcb); static int wait_tulip(HCS * pCurHcb); static int tul_wait_done_disc(HCS * pCurHcb); static int tul_wait_disc(HCS * pCurHcb); static void tulip_scsi(HCS * pCurHcb); static int tul_post_scsi_rst(HCS * pCurHcb); static void tul_se2_ew_en(WORD CurBase); static void tul_se2_ew_ds(WORD CurBase); static int tul_se2_rd_all(WORD CurBase); static void tul_se2_update_all(WORD CurBase); /* setup default pattern */ static void tul_read_eeprom(WORD CurBase); /* ---- EXTERNAL VARIABLES ---- */ HCS tul_hcs[MAX_SUPPORTED_ADAPTERS]; /* ---- INTERNAL VARIABLES ---- */ static INI_ADPT_STRUCT i91u_adpt[MAX_SUPPORTED_ADAPTERS]; /*NVRAM nvram, *nvramp = &nvram; */ static NVRAM i91unvram; static NVRAM *i91unvramp; static UCHAR i91udftNvRam[64] = { /*----------- header -----------*/ 0x25, 0xc9, /* Signature */ 0x40, /* Size */ 0x01, /* Revision */ /* -- Host Adapter Structure -- */ 0x95, /* ModelByte0 */ 0x00, /* ModelByte1 */ 0x00, /* ModelInfo */ 0x01, /* NumOfCh */ NBC1_DEFAULT, /* BIOSConfig1 */ 0, /* BIOSConfig2 */ 0, /* HAConfig1 */ 0, /* HAConfig2 */ /* SCSI channel 0 and target Structure */ 7, /* SCSIid */ NCC1_DEFAULT, /* SCSIconfig1 */ 0, /* SCSIconfig2 */ 0x10, /* NumSCSItarget */ NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, /* SCSI channel 1 and target Structure */ 7, /* SCSIid */ NCC1_DEFAULT, /* SCSIconfig1 */ 0, /* SCSIconfig2 */ 0x10, /* NumSCSItarget */ NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; /* - CheckSum - */ static UCHAR tul_rate_tbl[8] = /* fast 20 */ { /* nanosecond devide by 4 */ 12, /* 50ns, 20M */ 18, /* 75ns, 13.3M */ 25, /* 100ns, 10M */ 31, /* 125ns, 8M */ 37, /* 150ns, 6.6M */ 43, /* 175ns, 5.7M */ 50, /* 200ns, 5M */ 62 /* 250ns, 4M */ }; extern int tul_num_ch; static void tul_do_pause(unsigned amount) { /* Pause for amount*10 milliseconds */ unsigned long the_time = jiffies + amount; /* 0.01 seconds per jiffy */ #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) while (time_before_eq(jiffies, the_time)); #else while (jiffies < the_time); #endif } /*-- forward reference --*/ /******************************************************************* Use memeory refresh time ~ 15us * 2 ********************************************************************/ void tul_se2_wait() { #if 1 udelay(30); #else UCHAR readByte; readByte = TUL_RD(0, 0x61); if ((readByte & 0x10) == 0x10) { for (;;) { readByte = TUL_RD(0, 0x61); if ((readByte & 0x10) == 0x10) break; } for (;;) { readByte = TUL_RD(0, 0x61); if ((readByte & 0x10) != 0x10) break; } } else { for (;;) { readByte = TUL_RD(0, 0x61); if ((readByte & 0x10) == 0x10) break; } for (;;) { readByte = TUL_RD(0, 0x61); if ((readByte & 0x10) != 0x10) break; } } #endif } /****************************************************************** Input: instruction for Serial E2PROM EX: se2_rd(0 call se2_instr() to send address and read command StartBit OP_Code Address Data --------- -------- ------------------ ------- 1 1 , 0 A5,A4,A3,A2,A1,A0 D15-D0 +----------------------------------------------------- | CS -----+ +--+ +--+ +--+ +--+ +--+ ^ | ^ | ^ | ^ | ^ | | | | | | | | | | | CLK -------+ +--+ +--+ +--+ +--+ +-- (leading edge trigger) +--1-----1--+ | SB OP | OP A5 A4 DI ----+ +--0------------------ (address and cmd sent to nvram) -------------------------------------------+ | DO +--- (data sent from nvram) ******************************************************************/ void tul_se2_instr(WORD CurBase, UCHAR instr) { int i; UCHAR b; TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2DO); /* cs+start bit */ tul_se2_wait(); TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK | SE2DO); /* +CLK */ tul_se2_wait(); for (i = 0; i < 8; i++) { if (instr & 0x80) b = SE2CS | SE2DO; /* -CLK+dataBit */ else b = SE2CS; /* -CLK */ TUL_WR(CurBase + TUL_NVRAM, b); tul_se2_wait(); TUL_WR(CurBase + TUL_NVRAM, b | SE2CLK); /* +CLK */ tul_se2_wait(); instr <<= 1; } TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */ tul_se2_wait(); return; } /****************************************************************** Function name : tul_se2_ew_en Description : Enable erase/write state of serial EEPROM ******************************************************************/ void tul_se2_ew_en(WORD CurBase) { tul_se2_instr(CurBase, 0x30); /* EWEN */ TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */ tul_se2_wait(); return; } /************************************************************************ Disable erase/write state of serial EEPROM *************************************************************************/ void tul_se2_ew_ds(WORD CurBase) { tul_se2_instr(CurBase, 0); /* EWDS */ TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */ tul_se2_wait(); return; } /****************************************************************** Input :address of Serial E2PROM Output :value stored in Serial E2PROM *******************************************************************/ USHORT tul_se2_rd(WORD CurBase, ULONG adr) { UCHAR instr, readByte; USHORT readWord; int i; instr = (UCHAR) (adr | 0x80); tul_se2_instr(CurBase, instr); /* READ INSTR */ readWord = 0; for (i = 15; i >= 0; i--) { TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK); /* +CLK */ tul_se2_wait(); TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */ /* sample data after the following edge of clock */ readByte = TUL_RD(CurBase, TUL_NVRAM); readByte &= SE2DI; readWord += (readByte << i); tul_se2_wait(); /* 6/20/95 */ } TUL_WR(CurBase + TUL_NVRAM, 0); /* no chip select */ tul_se2_wait(); return readWord; } /****************************************************************** Input: new value in Serial E2PROM, address of Serial E2PROM *******************************************************************/ void tul_se2_wr(WORD CurBase, UCHAR adr, USHORT writeWord) { UCHAR readByte; UCHAR instr; int i; instr = (UCHAR) (adr | 0x40); tul_se2_instr(CurBase, instr); /* WRITE INSTR */ for (i = 15; i >= 0; i--) { if (writeWord & 0x8000) TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2DO); /* -CLK+dataBit 1 */ else TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK+dataBit 0 */ tul_se2_wait(); TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK); /* +CLK */ tul_se2_wait(); writeWord <<= 1; } TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */ tul_se2_wait(); TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */ tul_se2_wait(); TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* +CS */ tul_se2_wait(); for (;;) { TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK); /* +CLK */ tul_se2_wait(); TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */ tul_se2_wait(); if ((readByte = TUL_RD(CurBase, TUL_NVRAM)) & SE2DI) break; /* write complete */ } TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */ return; } /*********************************************************************** Read SCSI H/A configuration parameters from serial EEPROM ************************************************************************/ int tul_se2_rd_all(WORD CurBase) { int i; ULONG chksum = 0; USHORT *np; i91unvramp = &i91unvram; np = (USHORT *) i91unvramp; for (i = 0; i < 32; i++) { *np++ = tul_se2_rd(CurBase, i); } /*--------------------Is signature "ini" ok ? ----------------*/ if (i91unvramp->NVM_Signature != INI_SIGNATURE) return -1; /*---------------------- Is ckecksum ok ? ----------------------*/ np = (USHORT *) i91unvramp; for (i = 0; i < 31; i++) chksum += *np++; if (i91unvramp->NVM_CheckSum != (USHORT) chksum) return -1; return 1; } /*********************************************************************** Update SCSI H/A configuration parameters from serial EEPROM ************************************************************************/ void tul_se2_update_all(WORD CurBase) { /* setup default pattern */ int i; ULONG chksum = 0; USHORT *np, *np1; i91unvramp = &i91unvram; /* Calculate checksum first */ np = (USHORT *) i91udftNvRam; for (i = 0; i < 31; i++) chksum += *np++; *np = (USHORT) chksum; tul_se2_ew_en(CurBase); /* Enable write */ np = (USHORT *) i91udftNvRam; np1 = (USHORT *) i91unvramp; for (i = 0; i < 32; i++, np++, np1++) { if (*np != *np1) { tul_se2_wr(CurBase, i, *np); } } tul_se2_ew_ds(CurBase); /* Disable write */ return; } /************************************************************************* Function name : read_eeprom **************************************************************************/ void tul_read_eeprom(WORD CurBase) { UCHAR gctrl; i91unvramp = &i91unvram; /*------Enable EEProm programming ---*/ gctrl = TUL_RD(CurBase, TUL_GCTRL); TUL_WR(CurBase + TUL_GCTRL, gctrl | TUL_GCTRL_EEPROM_BIT); if (tul_se2_rd_all(CurBase) != 1) { tul_se2_update_all(CurBase); /* setup default pattern */ tul_se2_rd_all(CurBase); /* load again */ } /*------ Disable EEProm programming ---*/ gctrl = TUL_RD(CurBase, TUL_GCTRL); TUL_WR(CurBase + TUL_GCTRL, gctrl & ~TUL_GCTRL_EEPROM_BIT); } /* read_eeprom */ int Addi91u_into_Adapter_table(WORD wBIOS, WORD wBASE, BYTE bInterrupt, BYTE bBus, BYTE bDevice) { int i, j; for (i = 0; i < MAX_SUPPORTED_ADAPTERS; i++) { if (i91u_adpt[i].ADPT_BIOS < wBIOS) continue; if (i91u_adpt[i].ADPT_BIOS == wBIOS) { if (i91u_adpt[i].ADPT_BASE == wBASE) { if (i91u_adpt[i].ADPT_Bus != 0xFF) return (FAILURE); } else if (i91u_adpt[i].ADPT_BASE < wBASE) continue; } for (j = MAX_SUPPORTED_ADAPTERS - 1; j > i; j--) { i91u_adpt[j].ADPT_BASE = i91u_adpt[j - 1].ADPT_BASE; i91u_adpt[j].ADPT_INTR = i91u_adpt[j - 1].ADPT_INTR; i91u_adpt[j].ADPT_BIOS = i91u_adpt[j - 1].ADPT_BIOS; i91u_adpt[j].ADPT_Bus = i91u_adpt[j - 1].ADPT_Bus; i91u_adpt[j].ADPT_Device = i91u_adpt[j - 1].ADPT_Device; } i91u_adpt[i].ADPT_BASE = wBASE; i91u_adpt[i].ADPT_INTR = bInterrupt; i91u_adpt[i].ADPT_BIOS = wBIOS; i91u_adpt[i].ADPT_Bus = bBus; i91u_adpt[i].ADPT_Device = bDevice; return (SUCCESSFUL); } return (FAILURE); } void init_i91uAdapter_table(void) { int i; for (i = 0; i < MAX_SUPPORTED_ADAPTERS; i++) { /* Initialize adapter structure */ i91u_adpt[i].ADPT_BIOS = 0xffff; i91u_adpt[i].ADPT_BASE = 0xffff; i91u_adpt[i].ADPT_INTR = 0xff; i91u_adpt[i].ADPT_Bus = 0xff; i91u_adpt[i].ADPT_Device = 0xff; } return; } void tul_stop_bm(HCS * pCurHcb) { if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND) { /* if DMA xfer is pending, abort DMA xfer */ TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_ABT | TAX_X_CLR_FIFO); /* wait Abort DMA xfer done */ while ((TUL_RD(pCurHcb->HCS_Base, TUL_Int) & XABT) == 0); } TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); } /***************************************************************************/ void get_tulipPCIConfig(HCS * pCurHcb, int ch_idx) { pCurHcb->HCS_Base = i91u_adpt[ch_idx].ADPT_BASE; /* Supply base address */ pCurHcb->HCS_BIOS = i91u_adpt[ch_idx].ADPT_BIOS; /* Supply BIOS address */ pCurHcb->HCS_Intr = i91u_adpt[ch_idx].ADPT_INTR; /* Supply interrupt line */ return; } /***************************************************************************/ int tul_reset_scsi(HCS * pCurHcb, int seconds) { TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_RST_BUS); while (!((pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt)) & TSS_SCSIRST_INT)); /* reset tulip chip */ TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, 0); /* Stall for a while, wait for target's firmware ready,make it 2 sec ! */ /* SONY 5200 tape drive won't work if only stall for 1 sec */ tul_do_pause(seconds * 100); TUL_RD(pCurHcb->HCS_Base, TUL_SInt); return (SCSI_RESET_SUCCESS); } /***************************************************************************/ int init_tulip(HCS * pCurHcb, SCB * scbp, int tul_num_scb, BYTE * pbBiosAdr, int seconds) { int i; WORD *pwFlags; BYTE *pbHeads; SCB *pTmpScb, *pPrevScb = NULL; pCurHcb->HCS_NumScbs = tul_num_scb; pCurHcb->HCS_Semaph = 1; #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) pCurHcb->HCS_SemaphLock = SPIN_LOCK_UNLOCKED; #endif pCurHcb->HCS_JSStatus0 = 0; pCurHcb->HCS_Scb = scbp; pCurHcb->HCS_NxtPend = scbp; pCurHcb->HCS_NxtAvail = scbp; for (i = 0, pTmpScb = scbp; i < tul_num_scb; i++, pTmpScb++) { pTmpScb->SCB_TagId = i; if (i != 0) pPrevScb->SCB_NxtScb = pTmpScb; pPrevScb = pTmpScb; } pPrevScb->SCB_NxtScb = NULL; pCurHcb->HCS_ScbEnd = pTmpScb; pCurHcb->HCS_FirstAvail = scbp; pCurHcb->HCS_LastAvail = pPrevScb; #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) pCurHcb->HCS_AvailLock = SPIN_LOCK_UNLOCKED; #endif pCurHcb->HCS_FirstPend = NULL; pCurHcb->HCS_LastPend = NULL; pCurHcb->HCS_FirstBusy = NULL; pCurHcb->HCS_LastBusy = NULL; pCurHcb->HCS_FirstDone = NULL; pCurHcb->HCS_LastDone = NULL; pCurHcb->HCS_ActScb = NULL; pCurHcb->HCS_ActTcs = NULL; tul_read_eeprom(pCurHcb->HCS_Base); /*---------- get H/A configuration -------------*/ if (i91unvramp->NVM_SCSIInfo[0].NVM_NumOfTarg == 8) pCurHcb->HCS_MaxTar = 8; else pCurHcb->HCS_MaxTar = 16; pCurHcb->HCS_Config = i91unvramp->NVM_SCSIInfo[0].NVM_ChConfig1; pCurHcb->HCS_SCSI_ID = i91unvramp->NVM_SCSIInfo[0].NVM_ChSCSIID; pCurHcb->HCS_IdMask = ~(1 << pCurHcb->HCS_SCSI_ID); #if CHK_PARITY /* Enable parity error response */ TUL_WR(pCurHcb->HCS_Base + TUL_PCMD, TUL_RD(pCurHcb->HCS_Base, TUL_PCMD) | 0x40); #endif /* Mask all the interrupt */ TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F); tul_stop_bm(pCurHcb); /* --- Initialize the tulip --- */ TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_RST_CHIP); /* program HBA's SCSI ID */ TUL_WR(pCurHcb->HCS_Base + TUL_SScsiId, pCurHcb->HCS_SCSI_ID << 4); /* Enable Initiator Mode ,phase latch,alternate sync period mode, disable SCSI reset */ if (pCurHcb->HCS_Config & HCC_EN_PAR) pCurHcb->HCS_SConf1 = (TSC_INITDEFAULT | TSC_EN_SCSI_PAR); else pCurHcb->HCS_SConf1 = (TSC_INITDEFAULT); TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurHcb->HCS_SConf1); /* Enable HW reselect */ TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, 0); /* selection time out = 250 ms */ TUL_WR(pCurHcb->HCS_Base + TUL_STimeOut, 153); /*--------- Enable SCSI terminator -----*/ TUL_WR(pCurHcb->HCS_Base + TUL_XCtrl, (pCurHcb->HCS_Config & (HCC_ACT_TERM1 | HCC_ACT_TERM2))); TUL_WR(pCurHcb->HCS_Base + TUL_GCTRL1, ((pCurHcb->HCS_Config & HCC_AUTO_TERM) >> 4) | (TUL_RD(pCurHcb->HCS_Base, TUL_GCTRL1) & 0xFE)); for (i = 0, pwFlags = (WORD *) & (i91unvramp->NVM_SCSIInfo[0].NVM_Targ0Config), pbHeads = pbBiosAdr + 0x180; i < pCurHcb->HCS_MaxTar; i++, pwFlags++) { pCurHcb->HCS_Tcs[i].TCS_Flags = *pwFlags & ~(TCF_SYNC_DONE | TCF_WDTR_DONE); if (pCurHcb->HCS_Tcs[i].TCS_Flags & TCF_EN_255) pCurHcb->HCS_Tcs[i].TCS_DrvFlags = TCF_DRV_255_63; else pCurHcb->HCS_Tcs[i].TCS_DrvFlags = 0; pCurHcb->HCS_Tcs[i].TCS_JS_Period = 0; pCurHcb->HCS_Tcs[i].TCS_SConfig0 = pCurHcb->HCS_SConf1; pCurHcb->HCS_Tcs[i].TCS_DrvHead = *pbHeads++; if (pCurHcb->HCS_Tcs[i].TCS_DrvHead == 255) pCurHcb->HCS_Tcs[i].TCS_DrvFlags = TCF_DRV_255_63; else pCurHcb->HCS_Tcs[i].TCS_DrvFlags = 0; pCurHcb->HCS_Tcs[i].TCS_DrvSector = *pbHeads++; pCurHcb->HCS_Tcs[i].TCS_Flags &= ~TCF_BUSY; pCurHcb->HCS_ActTags[i] = 0; pCurHcb->HCS_MaxTags[i] = 0xFF; } /* for */ printk("i91u: PCI Base=0x%04X, IRQ=%d, BIOS=0x%04X0, SCSI ID=%d\n", pCurHcb->HCS_Base, pCurHcb->HCS_Intr, pCurHcb->HCS_BIOS, pCurHcb->HCS_SCSI_ID); /*------------------- reset SCSI Bus ---------------------------*/ if (pCurHcb->HCS_Config & HCC_SCSI_RESET) { printk("i91u: Reset SCSI Bus ... \n"); tul_reset_scsi(pCurHcb, seconds); } TUL_WR(pCurHcb->HCS_Base + TUL_SCFG1, 0x17); TUL_WR(pCurHcb->HCS_Base + TUL_SIntEnable, 0xE9); return (0); } /***************************************************************************/ SCB *tul_alloc_scb(HCS * hcsp) { SCB *pTmpScb; ULONG flags; #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_lock_irqsave(&(hcsp->HCS_AvailLock), flags); #else save_flags(flags); cli(); #endif if ((pTmpScb = hcsp->HCS_FirstAvail) != NULL) { #if DEBUG_QUEUE printk("find scb at %08lx\n", (ULONG) pTmpScb); #endif if ((hcsp->HCS_FirstAvail = pTmpScb->SCB_NxtScb) == NULL) hcsp->HCS_LastAvail = NULL; pTmpScb->SCB_NxtScb = NULL; pTmpScb->SCB_Status = SCB_RENT; } #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(hcsp->HCS_AvailLock), flags); #else restore_flags(flags); #endif return (pTmpScb); } /***************************************************************************/ void tul_release_scb(HCS * hcsp, SCB * scbp) { ULONG flags; #if DEBUG_QUEUE printk("Release SCB %lx; ", (ULONG) scbp); #endif #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_lock_irqsave(&(hcsp->HCS_AvailLock), flags); #else save_flags(flags); cli(); #endif scbp->SCB_Srb = 0; scbp->SCB_Status = 0; scbp->SCB_NxtScb = NULL; if (hcsp->HCS_LastAvail != NULL) { hcsp->HCS_LastAvail->SCB_NxtScb = scbp; hcsp->HCS_LastAvail = scbp; } else { hcsp->HCS_FirstAvail = scbp; hcsp->HCS_LastAvail = scbp; } #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(hcsp->HCS_AvailLock), flags); #else restore_flags(flags); #endif } /***************************************************************************/ void tul_append_pend_scb(HCS * pCurHcb, SCB * scbp) { #if DEBUG_QUEUE printk("Append pend SCB %lx; ", (ULONG) scbp); #endif scbp->SCB_Status = SCB_PEND; scbp->SCB_NxtScb = NULL; if (pCurHcb->HCS_LastPend != NULL) { pCurHcb->HCS_LastPend->SCB_NxtScb = scbp; pCurHcb->HCS_LastPend = scbp; } else { pCurHcb->HCS_FirstPend = scbp; pCurHcb->HCS_LastPend = scbp; } } /***************************************************************************/ void tul_push_pend_scb(HCS * pCurHcb, SCB * scbp) { #if DEBUG_QUEUE printk("Push pend SCB %lx; ", (ULONG) scbp); #endif scbp->SCB_Status = SCB_PEND; if ((scbp->SCB_NxtScb = pCurHcb->HCS_FirstPend) != NULL) { pCurHcb->HCS_FirstPend = scbp; } else { pCurHcb->HCS_FirstPend = scbp; pCurHcb->HCS_LastPend = scbp; } } /***************************************************************************/ SCB *tul_find_first_pend_scb(HCS * pCurHcb) { SCB *pFirstPend; pFirstPend = pCurHcb->HCS_FirstPend; while (pFirstPend != NULL) { if (pFirstPend->SCB_Opcode != ExecSCSI) { return (pFirstPend); } if (pFirstPend->SCB_TagMsg == 0) { if ((pCurHcb->HCS_ActTags[pFirstPend->SCB_Target] == 0) && !(pCurHcb->HCS_Tcs[pFirstPend->SCB_Target].TCS_Flags & TCF_BUSY)) { return (pFirstPend); } } else { if ((pCurHcb->HCS_ActTags[pFirstPend->SCB_Target] >= pCurHcb->HCS_MaxTags[pFirstPend->SCB_Target]) | (pCurHcb->HCS_Tcs[pFirstPend->SCB_Target].TCS_Flags & TCF_BUSY)) { pFirstPend = pFirstPend->SCB_NxtScb; continue; } return (pFirstPend); } pFirstPend = pFirstPend->SCB_NxtScb; } return (pFirstPend); } /***************************************************************************/ SCB *tul_pop_pend_scb(HCS * pCurHcb) { SCB *pTmpScb; if ((pTmpScb = pCurHcb->HCS_FirstPend) != NULL) { if ((pCurHcb->HCS_FirstPend = pTmpScb->SCB_NxtScb) == NULL) pCurHcb->HCS_LastPend = NULL; pTmpScb->SCB_NxtScb = NULL; } #if DEBUG_QUEUE printk("Pop pend SCB %lx; ", (ULONG) pTmpScb); #endif return (pTmpScb); } /***************************************************************************/ void tul_unlink_pend_scb(HCS * pCurHcb, SCB * pCurScb) { SCB *pTmpScb, *pPrevScb; #if DEBUG_QUEUE printk("unlink pend SCB %lx; ", (ULONG) pCurScb); #endif pPrevScb = pTmpScb = pCurHcb->HCS_FirstPend; while (pTmpScb != NULL) { if (pCurScb == pTmpScb) { /* Unlink this SCB */ if (pTmpScb == pCurHcb->HCS_FirstPend) { if ((pCurHcb->HCS_FirstPend = pTmpScb->SCB_NxtScb) == NULL) pCurHcb->HCS_LastPend = NULL; } else { pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb; if (pTmpScb == pCurHcb->HCS_LastPend) pCurHcb->HCS_LastPend = pPrevScb; } pTmpScb->SCB_NxtScb = NULL; break; } pPrevScb = pTmpScb; pTmpScb = pTmpScb->SCB_NxtScb; } return; } /***************************************************************************/ void tul_append_busy_scb(HCS * pCurHcb, SCB * scbp) { #if DEBUG_QUEUE printk("append busy SCB %lx; ", (ULONG) scbp); #endif if (scbp->SCB_TagMsg) pCurHcb->HCS_ActTags[scbp->SCB_Target]++; else pCurHcb->HCS_Tcs[scbp->SCB_Target].TCS_Flags |= TCF_BUSY; scbp->SCB_Status = SCB_BUSY; scbp->SCB_NxtScb = NULL; if (pCurHcb->HCS_LastBusy != NULL) { pCurHcb->HCS_LastBusy->SCB_NxtScb = scbp; pCurHcb->HCS_LastBusy = scbp; } else { pCurHcb->HCS_FirstBusy = scbp; pCurHcb->HCS_LastBusy = scbp; } } /***************************************************************************/ SCB *tul_pop_busy_scb(HCS * pCurHcb) { SCB *pTmpScb; if ((pTmpScb = pCurHcb->HCS_FirstBusy) != NULL) { if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL) pCurHcb->HCS_LastBusy = NULL; pTmpScb->SCB_NxtScb = NULL; if (pTmpScb->SCB_TagMsg) pCurHcb->HCS_ActTags[pTmpScb->SCB_Target]--; else pCurHcb->HCS_Tcs[pTmpScb->SCB_Target].TCS_Flags &= ~TCF_BUSY; } #if DEBUG_QUEUE printk("Pop busy SCB %lx; ", (ULONG) pTmpScb); #endif return (pTmpScb); } /***************************************************************************/ void tul_unlink_busy_scb(HCS * pCurHcb, SCB * pCurScb) { SCB *pTmpScb, *pPrevScb; #if DEBUG_QUEUE printk("unlink busy SCB %lx; ", (ULONG) pCurScb); #endif pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy; while (pTmpScb != NULL) { if (pCurScb == pTmpScb) { /* Unlink this SCB */ if (pTmpScb == pCurHcb->HCS_FirstBusy) { if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL) pCurHcb->HCS_LastBusy = NULL; } else { pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb; if (pTmpScb == pCurHcb->HCS_LastBusy) pCurHcb->HCS_LastBusy = pPrevScb; } pTmpScb->SCB_NxtScb = NULL; if (pTmpScb->SCB_TagMsg) pCurHcb->HCS_ActTags[pTmpScb->SCB_Target]--; else pCurHcb->HCS_Tcs[pTmpScb->SCB_Target].TCS_Flags &= ~TCF_BUSY; break; } pPrevScb = pTmpScb; pTmpScb = pTmpScb->SCB_NxtScb; } return; } /***************************************************************************/ SCB *tul_find_busy_scb(HCS * pCurHcb, WORD tarlun) { SCB *pTmpScb, *pPrevScb; WORD scbp_tarlun; pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy; while (pTmpScb != NULL) { scbp_tarlun = (pTmpScb->SCB_Lun << 8) | (pTmpScb->SCB_Target); if (scbp_tarlun == tarlun) { /* Unlink this SCB */ break; } pPrevScb = pTmpScb; pTmpScb = pTmpScb->SCB_NxtScb; } #if DEBUG_QUEUE printk("find busy SCB %lx; ", (ULONG) pTmpScb); #endif return (pTmpScb); } /***************************************************************************/ void tul_append_done_scb(HCS * pCurHcb, SCB * scbp) { #if DEBUG_QUEUE printk("append done SCB %lx; ", (ULONG) scbp); #endif scbp->SCB_Status = SCB_DONE; scbp->SCB_NxtScb = NULL; if (pCurHcb->HCS_LastDone != NULL) { pCurHcb->HCS_LastDone->SCB_NxtScb = scbp; pCurHcb->HCS_LastDone = scbp; } else { pCurHcb->HCS_FirstDone = scbp; pCurHcb->HCS_LastDone = scbp; } } /***************************************************************************/ SCB *tul_find_done_scb(HCS * pCurHcb) { SCB *pTmpScb; if ((pTmpScb = pCurHcb->HCS_FirstDone) != NULL) { if ((pCurHcb->HCS_FirstDone = pTmpScb->SCB_NxtScb) == NULL) pCurHcb->HCS_LastDone = NULL; pTmpScb->SCB_NxtScb = NULL; } #if DEBUG_QUEUE printk("find done SCB %lx; ", (ULONG) pTmpScb); #endif return (pTmpScb); } /***************************************************************************/ int tul_abort_srb(HCS * pCurHcb, ULONG srbp) { ULONG flags; SCB *pTmpScb, *pPrevScb; #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); #else save_flags(flags); cli(); #endif if ((pCurHcb->HCS_Semaph == 0) && (pCurHcb->HCS_ActScb == NULL)) { TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F); /* disable Jasmin SCSI Int */ #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #endif tulip_main(pCurHcb); #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); #endif pCurHcb->HCS_Semaph = 1; TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F); #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #else restore_flags(flags); #endif return SCSI_ABORT_SNOOZE; } pPrevScb = pTmpScb = pCurHcb->HCS_FirstPend; /* Check Pend queue */ while (pTmpScb != NULL) { /* 07/27/98 */ if (pTmpScb->SCB_Srb == (unsigned char *) srbp) { if (pTmpScb == pCurHcb->HCS_ActScb) { #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #else restore_flags(flags); #endif return SCSI_ABORT_BUSY; } else if (pTmpScb == pCurHcb->HCS_FirstPend) { if ((pCurHcb->HCS_FirstPend = pTmpScb->SCB_NxtScb) == NULL) pCurHcb->HCS_LastPend = NULL; } else { pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb; if (pTmpScb == pCurHcb->HCS_LastPend) pCurHcb->HCS_LastPend = pPrevScb; } pTmpScb->SCB_HaStat = HOST_ABORTED; pTmpScb->SCB_Flags |= SCF_DONE; if (pTmpScb->SCB_Flags & SCF_POST) (*pTmpScb->SCB_Post) ((BYTE *) pCurHcb, (BYTE *) pTmpScb); #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #else restore_flags(flags); #endif return SCSI_ABORT_SUCCESS; } pPrevScb = pTmpScb; pTmpScb = pTmpScb->SCB_NxtScb; } pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy; /* Check Busy queue */ while (pTmpScb != NULL) { if (pTmpScb->SCB_Srb == (unsigned char *) srbp) { if (pTmpScb == pCurHcb->HCS_ActScb) { #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #else restore_flags(flags); #endif return SCSI_ABORT_BUSY; } else if (pTmpScb->SCB_TagMsg == 0) { #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #else restore_flags(flags); #endif return SCSI_ABORT_BUSY; } else { pCurHcb->HCS_ActTags[pTmpScb->SCB_Target]--; if (pTmpScb == pCurHcb->HCS_FirstBusy) { if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL) pCurHcb->HCS_LastBusy = NULL; } else { pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb; if (pTmpScb == pCurHcb->HCS_LastBusy) pCurHcb->HCS_LastBusy = pPrevScb; } pTmpScb->SCB_NxtScb = NULL; pTmpScb->SCB_HaStat = HOST_ABORTED; pTmpScb->SCB_Flags |= SCF_DONE; if (pTmpScb->SCB_Flags & SCF_POST) (*pTmpScb->SCB_Post) ((BYTE *) pCurHcb, (BYTE *) pTmpScb); #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #else restore_flags(flags); #endif return SCSI_ABORT_SUCCESS; } } pPrevScb = pTmpScb; pTmpScb = pTmpScb->SCB_NxtScb; } #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #else restore_flags(flags); #endif return (SCSI_ABORT_NOT_RUNNING); } /***************************************************************************/ int tul_bad_seq(HCS * pCurHcb) { SCB *pCurScb; printk("tul_bad_seg c=%d\n", pCurHcb->HCS_Index); if ((pCurScb = pCurHcb->HCS_ActScb) != NULL) { tul_unlink_busy_scb(pCurHcb, pCurScb); pCurScb->SCB_HaStat = HOST_BAD_PHAS; pCurScb->SCB_TaStat = 0; tul_append_done_scb(pCurHcb, pCurScb); } tul_stop_bm(pCurHcb); tul_reset_scsi(pCurHcb, 8); /* 7/29/98 */ return (tul_post_scsi_rst(pCurHcb)); } /************************************************************************/ int tul_device_reset(HCS * pCurHcb, ULONG pSrb, unsigned int target, unsigned int ResetFlags) { ULONG flags; SCB *pScb; #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); #else save_flags(flags); cli(); #endif if (ResetFlags & SCSI_RESET_ASYNCHRONOUS) { if ((pCurHcb->HCS_Semaph == 0) && (pCurHcb->HCS_ActScb == NULL)) { TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F); /* disable Jasmin SCSI Int */ #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #endif tulip_main(pCurHcb); #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); #endif pCurHcb->HCS_Semaph = 1; TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F); #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #else restore_flags(flags); #endif return SCSI_RESET_SNOOZE; } pScb = pCurHcb->HCS_FirstBusy; /* Check Busy queue */ while (pScb != NULL) { if (pScb->SCB_Srb == (unsigned char *) pSrb) break; pScb = pScb->SCB_NxtScb; } if (pScb == NULL) { printk("Unable to Reset - No SCB Found\n"); #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #else restore_flags(flags); #endif return SCSI_RESET_NOT_RUNNING; } } if ((pScb = tul_alloc_scb(pCurHcb)) == NULL) { #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #else restore_flags(flags); #endif return SCSI_RESET_NOT_RUNNING; } pScb->SCB_Opcode = BusDevRst; pScb->SCB_Flags = SCF_POST; pScb->SCB_Target = target; pScb->SCB_Mode = 0; pScb->SCB_Srb = 0; if (ResetFlags & SCSI_RESET_SYNCHRONOUS) { pScb->SCB_Srb = (unsigned char *) pSrb; } tul_push_pend_scb(pCurHcb, pScb); /* push this SCB to Pending queue */ if (pCurHcb->HCS_Semaph == 1) { TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F); /* disable Jasmin SCSI Int */ pCurHcb->HCS_Semaph = 0; #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #endif tulip_main(pCurHcb); #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); #endif pCurHcb->HCS_Semaph = 1; TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F); } #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #else restore_flags(flags); #endif return SCSI_RESET_PENDING; } int tul_reset_scsi_bus(HCS * pCurHcb) { ULONG flags; #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); #else save_flags(flags); cli(); #endif TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F); pCurHcb->HCS_Semaph = 0; #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #else restore_flags(flags); #endif tul_stop_bm(pCurHcb); tul_reset_scsi(pCurHcb, 2); /* 7/29/98 */ #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); #else save_flags(flags); cli(); #endif tul_post_scsi_rst(pCurHcb); #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #endif tulip_main(pCurHcb); #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); #endif pCurHcb->HCS_Semaph = 1; TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F); #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #else restore_flags(flags); #endif return (SCSI_RESET_SUCCESS | SCSI_RESET_HOST_RESET); } /************************************************************************/ void tul_exec_scb(HCS * pCurHcb, SCB * pCurScb) { ULONG flags; pCurScb->SCB_Mode = 0; pCurScb->SCB_SGIdx = 0; pCurScb->SCB_SGMax = pCurScb->SCB_SGLen; #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); #else save_flags(flags); cli(); #endif tul_append_pend_scb(pCurHcb, pCurScb); /* Append this SCB to Pending queue */ /* VVVVV 07/21/98 */ if (pCurHcb->HCS_Semaph == 1) { TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F); /* disable Jasmin SCSI Int */ pCurHcb->HCS_Semaph = 0; #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #endif tulip_main(pCurHcb); #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); #endif pCurHcb->HCS_Semaph = 1; TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F); } #if LINUX_VERSION_CODE >= CVT_LINUX_VERSION(2,1,95) spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); #else restore_flags(flags); #endif return; } /***************************************************************************/ int tul_isr(HCS * pCurHcb) { /* Enter critical section */ if (TUL_RD(pCurHcb->HCS_Base, TUL_Int) & TSS_INT_PENDING) { if (pCurHcb->HCS_Semaph == 1) { TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F); /* Disable Tulip SCSI Int */ pCurHcb->HCS_Semaph = 0; tulip_main(pCurHcb); pCurHcb->HCS_Semaph = 1; TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F); return (1); } } return (0); } /***************************************************************************/ int tulip_main(HCS * pCurHcb) { SCB *pCurScb; for (;;) { tulip_scsi(pCurHcb); /* Call tulip_scsi */ while ((pCurScb = tul_find_done_scb(pCurHcb)) != NULL) { /* find done entry */ if (pCurScb->SCB_TaStat == QUEUE_FULL) { pCurHcb->HCS_MaxTags[pCurScb->SCB_Target] = pCurHcb->HCS_ActTags[pCurScb->SCB_Target] - 1; pCurScb->SCB_TaStat = 0; tul_append_pend_scb(pCurHcb, pCurScb); continue; } if (!(pCurScb->SCB_Mode & SCM_RSENS)) { /* not in auto req. sense mode */ if (pCurScb->SCB_TaStat == 2) { /* clr sync. nego flag */ if (pCurScb->SCB_Flags & SCF_SENSE) { BYTE len; len = pCurScb->SCB_SenseLen; if (len == 0) len = 1; pCurScb->SCB_BufLen = pCurScb->SCB_SenseLen; pCurScb->SCB_BufPtr = pCurScb->SCB_SensePtr; pCurScb->SCB_Flags &= ~(SCF_SG | SCF_DIR); /* for xfer_data_in */ /* pCurScb->SCB_Flags |= SCF_NO_DCHK; */ /* so, we won't report worng direction in xfer_data_in, and won't report HOST_DO_DU in state_6 */ pCurScb->SCB_Mode = SCM_RSENS; pCurScb->SCB_Ident &= 0xBF; /* Disable Disconnect */ pCurScb->SCB_TagMsg = 0; pCurScb->SCB_TaStat = 0; pCurScb->SCB_CDBLen = 6; pCurScb->SCB_CDB[0] = SCSICMD_RequestSense; pCurScb->SCB_CDB[1] = 0; pCurScb->SCB_CDB[2] = 0; pCurScb->SCB_CDB[3] = 0; pCurScb->SCB_CDB[4] = len; pCurScb->SCB_CDB[5] = 0; tul_push_pend_scb(pCurHcb, pCurScb); break; } } } else { /* in request sense mode */ if (pCurScb->SCB_TaStat == 2) { /* check contition status again after sending requset sense cmd 0x3 */ pCurScb->SCB_HaStat = HOST_BAD_PHAS; } pCurScb->SCB_TaStat = 2; } pCurScb->SCB_Flags |= SCF_DONE; if (pCurScb->SCB_Flags & SCF_POST) { (*pCurScb->SCB_Post) ((BYTE *) pCurHcb, (BYTE *) pCurScb); } } /* while */ /* find_active: */ if (TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0) & TSS_INT_PENDING) continue; if (pCurHcb->HCS_ActScb) { /* return to OS and wait for xfer_done_ISR/Selected_ISR */ return 1; /* return to OS, enable interrupt */ } /* Check pending SCB */ if (tul_find_first_pend_scb(pCurHcb) == NULL) { return 1; /* return to OS, enable interrupt */ } } /* End of for loop */ /* statement won't reach here */ } /*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */ /***************************************************************************/ /***************************************************************************/ /***************************************************************************/ /***************************************************************************/ /***************************************************************************/ void tulip_scsi(HCS * pCurHcb) { SCB *pCurScb; TCS *pCurTcb; /* make sure to service interrupt asap */ if ((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0)) & TSS_INT_PENDING) { pCurHcb->HCS_Phase = pCurHcb->HCS_JSStatus0 & TSS_PH_MASK; pCurHcb->HCS_JSStatus1 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1); pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt); if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) { /* SCSI bus reset detected */ int_tul_scsi_rst(pCurHcb); return; } if (pCurHcb->HCS_JSInt & TSS_RESEL_INT) { /* if selected/reselected interrupt */ if (int_tul_resel(pCurHcb) == 0) tul_next_state(pCurHcb); return; } if (pCurHcb->HCS_JSInt & TSS_SEL_TIMEOUT) { int_tul_busfree(pCurHcb); return; } if (pCurHcb->HCS_JSInt & TSS_DISC_INT) { /* BUS disconnection */ int_tul_busfree(pCurHcb); /* unexpected bus free or sel timeout */ return; } if (pCurHcb->HCS_JSInt & (TSS_FUNC_COMP | TSS_BUS_SERV)) { /* func complete or Bus service */ if ((pCurScb = pCurHcb->HCS_ActScb) != NULL) tul_next_state(pCurHcb); return; } } if (pCurHcb->HCS_ActScb != NULL) return; if ((pCurScb = tul_find_first_pend_scb(pCurHcb)) == NULL) return; /* program HBA's SCSI ID & target SCSI ID */ TUL_WR(pCurHcb->HCS_Base + TUL_SScsiId, (pCurHcb->HCS_SCSI_ID << 4) | (pCurScb->SCB_Target & 0x0F)); if (pCurScb->SCB_Opcode == ExecSCSI) { pCurTcb = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target]; if (pCurScb->SCB_TagMsg) pCurTcb->TCS_DrvFlags |= TCF_DRV_EN_TAG; else pCurTcb->TCS_DrvFlags &= ~TCF_DRV_EN_TAG; TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurTcb->TCS_JS_Period); if ((pCurTcb->TCS_Flags & (TCF_WDTR_DONE | TCF_NO_WDTR)) == 0) { /* do wdtr negotiation */ tul_select_atn_stop(pCurHcb, pCurScb); } else { if ((pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) { /* do sync negotiation */ tul_select_atn_stop(pCurHcb, pCurScb); } else { if (pCurScb->SCB_TagMsg) tul_select_atn3(pCurHcb, pCurScb); else tul_select_atn(pCurHcb, pCurScb); } } if (pCurScb->SCB_Flags & SCF_POLL) { while (wait_tulip(pCurHcb) != -1) { if (tul_next_state(pCurHcb) == -1) break; } } } else if (pCurScb->SCB_Opcode == BusDevRst) { tul_select_atn_stop(pCurHcb, pCurScb); pCurScb->SCB_NxtStat = 8; if (pCurScb->SCB_Flags & SCF_POLL) { while (wait_tulip(pCurHcb) != -1) { if (tul_next_state(pCurHcb) == -1) break; } } } else if (pCurScb->SCB_Opcode == AbortCmd) { ULONG srbp; srbp = (ULONG) pCurScb->SCB_Srb; /* 08/03/98 */ if (tul_abort_srb(pCurHcb, srbp) != 0) { tul_unlink_pend_scb(pCurHcb, pCurScb); tul_release_scb(pCurHcb, pCurScb); } else { pCurScb->SCB_Opcode = BusDevRst; tul_select_atn_stop(pCurHcb, pCurScb); pCurScb->SCB_NxtStat = 8; } /* 08/03/98 */ } else { tul_unlink_pend_scb(pCurHcb, pCurScb); pCurScb->SCB_HaStat = 0x16; /* bad command */ tul_append_done_scb(pCurHcb, pCurScb); } return; } /***************************************************************************/ int tul_next_state(HCS * pCurHcb) { int next; next = pCurHcb->HCS_ActScb->SCB_NxtStat; for (;;) { switch (next) { case 1: next = tul_state_1(pCurHcb); break; case 2: next = tul_state_2(pCurHcb); break; case 3: next = tul_state_3(pCurHcb); break; case 4: next = tul_state_4(pCurHcb); break; case 5: next = tul_state_5(pCurHcb); break; case 6: next = tul_state_6(pCurHcb); break; case 7: next = tul_state_7(pCurHcb); break; case 8: return (tul_bus_device_reset(pCurHcb)); default: return (tul_bad_seq(pCurHcb)); } if (next <= 0) return next; } } /***************************************************************************/ /* sTate after selection with attention & stop */ int tul_state_1(HCS * pCurHcb) { SCB *pCurScb = pCurHcb->HCS_ActScb; TCS *pCurTcb = pCurHcb->HCS_ActTcs; #if DEBUG_STATE printk("-s1-"); #endif tul_unlink_pend_scb(pCurHcb, pCurScb); tul_append_busy_scb(pCurHcb, pCurScb); TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurTcb->TCS_SConfig0); /* ATN on */ if (pCurHcb->HCS_Phase == MSG_OUT) { TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, (TSC_EN_BUS_IN | TSC_HW_RESELECT)); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_Ident); if (pCurScb->SCB_TagMsg) { TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagMsg); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagId); } if ((pCurTcb->TCS_Flags & (TCF_WDTR_DONE | TCF_NO_WDTR)) == 0) { pCurTcb->TCS_Flags |= TCF_WDTR_DONE; TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 2); /* Extended msg length */ TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3); /* Sync request */ TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1); /* Start from 16 bits */ } else if ((pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) { pCurTcb->TCS_Flags |= TCF_SYNC_DONE; TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3); /* extended msg length */ TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1); /* sync request */ TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, tul_rate_tbl[pCurTcb->TCS_Flags & TCF_SCSI_RATE]); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MAX_OFFSET); /* REQ/ACK offset */ } TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT); if (wait_tulip(pCurHcb) == -1) return (-1); } TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, (TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7))); return (3); } /***************************************************************************/ /* state after selection with attention */ /* state after selection with attention3 */ int tul_state_2(HCS * pCurHcb) { SCB *pCurScb = pCurHcb->HCS_ActScb; TCS *pCurTcb = pCurHcb->HCS_ActTcs; #if DEBUG_STATE printk("-s2-"); #endif tul_unlink_pend_scb(pCurHcb, pCurScb); tul_append_busy_scb(pCurHcb, pCurScb); TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurTcb->TCS_SConfig0); if (pCurHcb->HCS_JSStatus1 & TSS_CMD_PH_CMP) { return (4); } TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, (TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7))); return (3); } /***************************************************************************/ /* state before CDB xfer is done */ int tul_state_3(HCS * pCurHcb) { SCB *pCurScb = pCurHcb->HCS_ActScb; TCS *pCurTcb = pCurHcb->HCS_ActTcs; int i; #if DEBUG_STATE printk("-s3-"); #endif for (;;) { switch (pCurHcb->HCS_Phase) { case CMD_OUT: /* Command out phase */ for (i = 0; i < (int) pCurScb->SCB_CDBLen; i++) TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_CDB[i]); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT); if (wait_tulip(pCurHcb) == -1) return (-1); if (pCurHcb->HCS_Phase == CMD_OUT) { return (tul_bad_seq(pCurHcb)); } return (4); case MSG_IN: /* Message in phase */ pCurScb->SCB_NxtStat = 3; if (tul_msgin(pCurHcb) == -1) return (-1); break; case STATUS_IN: /* Status phase */ if (tul_status_msg(pCurHcb) == -1) return (-1); break; case MSG_OUT: /* Message out phase */ if (pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) { TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP); /* msg nop */ TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT); if (wait_tulip(pCurHcb) == -1) return (-1); } else { pCurTcb->TCS_Flags |= TCF_SYNC_DONE; TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3); /* ext. msg len */ TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1); /* sync request */ TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, tul_rate_tbl[pCurTcb->TCS_Flags & TCF_SCSI_RATE]); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MAX_OFFSET); /* REQ/ACK offset */ TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT); if (wait_tulip(pCurHcb) == -1) return (-1); TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)); } break; default: return (tul_bad_seq(pCurHcb)); } } } /***************************************************************************/ int tul_state_4(HCS * pCurHcb) { SCB *pCurScb = pCurHcb->HCS_ActScb; #if DEBUG_STATE printk("-s4-"); #endif if ((pCurScb->SCB_Flags & SCF_DIR) == SCF_NO_XF) { return (6); /* Go to state 6 */ } for (;;) { if (pCurScb->SCB_BufLen == 0) return (6); /* Go to state 6 */ switch (pCurHcb->HCS_Phase) { case STATUS_IN: /* Status phase */ if ((pCurScb->SCB_Flags & SCF_DIR) != 0) { /* if direction bit set then report data underrun */ pCurScb->SCB_HaStat = HOST_DO_DU; } if ((tul_status_msg(pCurHcb)) == -1) return (-1); break; case MSG_IN: /* Message in phase */ pCurScb->SCB_NxtStat = 0x4; if (tul_msgin(pCurHcb) == -1) return (-1); break; case MSG_OUT: /* Message out phase */ if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) { pCurScb->SCB_BufLen = 0; pCurScb->SCB_HaStat = HOST_DO_DU; if (tul_msgout_ide(pCurHcb) == -1) return (-1); return (6); /* Go to state 6 */ } else { TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP); /* msg nop */ TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT); if (wait_tulip(pCurHcb) == -1) return (-1); } break; case DATA_IN: /* Data in phase */ return (tul_xfer_data_in(pCurHcb)); case DATA_OUT: /* Data out phase */ return (tul_xfer_data_out(pCurHcb)); default: return (tul_bad_seq(pCurHcb)); } } } /***************************************************************************/ /* state after dma xfer done or phase change before xfer done */ int tul_state_5(HCS * pCurHcb) { SCB *pCurScb = pCurHcb->HCS_ActScb; long cnt, xcnt; /* cannot use unsigned !! code: if (xcnt < 0) */ #if DEBUG_STATE printk("-s5-"); #endif /*------ get remaining count -------*/ cnt = TUL_RDLONG(pCurHcb->HCS_Base, TUL_SCnt0) & 0x0FFFFFF; if (TUL_RD(pCurHcb->HCS_Base, TUL_XCmd) & 0x20) { /* ----------------------- DATA_IN ----------------------------- */ /* check scsi parity error */ if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) { pCurScb->SCB_HaStat = HOST_DO_DU; } if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND) { /* DMA xfer pending, Send STOP */ /* tell Hardware scsi xfer has been terminated */ TUL_WR(pCurHcb->HCS_Base + TUL_XCtrl, TUL_RD(pCurHcb->HCS_Base, TUL_XCtrl) | 0x80); /* wait until DMA xfer not pending */ while (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND); } } else { /*-------- DATA OUT -----------*/ if ((TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1) & TSS_XFER_CMP) == 0) { if (pCurHcb->HCS_ActTcs->TCS_JS_Period & TSC_WIDE_SCSI) cnt += (TUL_RD(pCurHcb->HCS_Base, TUL_SFifoCnt) & 0x1F) << 1; else cnt += (TUL_RD(pCurHcb->HCS_Base, TUL_SFifoCnt) & 0x1F); } if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND) { /* if DMA xfer is pending, abort DMA xfer */ TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_ABT); /* wait Abort DMA xfer done */ while ((TUL_RD(pCurHcb->HCS_Base, TUL_Int) & XABT) == 0); } if ((cnt == 1) && (pCurHcb->HCS_Phase == DATA_OUT)) { TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT); if (wait_tulip(pCurHcb) == -1) { return (-1); } cnt = 0; } else { if ((TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1) & TSS_XFER_CMP) == 0) TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); } } if (cnt == 0) { pCurScb->SCB_BufLen = 0; return (6); /* Go to state 6 */ } /* Update active data pointer */ xcnt = (long) pCurScb->SCB_BufLen - cnt; /* xcnt== bytes already xferred */ pCurScb->SCB_BufLen = (U32) cnt; /* cnt == bytes left to be xferred */ if (pCurScb->SCB_Flags & SCF_SG) { register SG *sgp; ULONG i; sgp = &pCurScb->SCB_SGList[pCurScb->SCB_SGIdx]; for (i = pCurScb->SCB_SGIdx; i < pCurScb->SCB_SGMax; sgp++, i++) { xcnt -= (long) sgp->SG_Len; if (xcnt < 0) { /* this sgp xfer half done */ xcnt += (long) sgp->SG_Len; /* xcnt == bytes xferred in this sgp */ sgp->SG_Ptr += (U32) xcnt; /* new ptr to be xfer */ sgp->SG_Len -= (U32) xcnt; /* new len to be xfer */ pCurScb->SCB_BufPtr += ((U32) (i - pCurScb->SCB_SGIdx) << 3); /* new SG table ptr */ pCurScb->SCB_SGLen = (BYTE) (pCurScb->SCB_SGMax - i); /* new SG table len */ pCurScb->SCB_SGIdx = (WORD) i; /* for next disc and come in this loop */ return (4); /* Go to state 4 */ } /* else (xcnt >= 0 , i.e. this sgp already xferred */ } /* for */ return (6); /* Go to state 6 */ } else { pCurScb->SCB_BufPtr += (U32) xcnt; } return (4); /* Go to state 4 */ } /***************************************************************************/ /* state after Data phase */ int tul_state_6(HCS * pCurHcb) { SCB *pCurScb = pCurHcb->HCS_ActScb; #if DEBUG_STATE printk("-s6-"); #endif for (;;) { switch (pCurHcb->HCS_Phase) { case STATUS_IN: /* Status phase */ if ((tul_status_msg(pCurHcb)) == -1) return (-1); break; case MSG_IN: /* Message in phase */ pCurScb->SCB_NxtStat = 6; if ((tul_msgin(pCurHcb)) == -1) return (-1); break; case MSG_OUT: /* Message out phase */ TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP); /* msg nop */ TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT); if (wait_tulip(pCurHcb) == -1) return (-1); break; case DATA_IN: /* Data in phase */ return (tul_xpad_in(pCurHcb)); case DATA_OUT: /* Data out phase */ return (tul_xpad_out(pCurHcb)); default: return (tul_bad_seq(pCurHcb)); } } } /***************************************************************************/ int tul_state_7(HCS * pCurHcb) { int cnt, i; #if DEBUG_STATE printk("-s7-"); #endif /* flush SCSI FIFO */ cnt = TUL_RD(pCurHcb->HCS_Base, TUL_SFifoCnt) & 0x1F; if (cnt) { for (i = 0; i < cnt; i++) TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); } switch (pCurHcb->HCS_Phase) { case DATA_IN: /* Data in phase */ case DATA_OUT: /* Data out phase */ return (tul_bad_seq(pCurHcb)); default: return (6); /* Go to state 6 */ } } /***************************************************************************/ int tul_xfer_data_in(HCS * pCurHcb) { SCB *pCurScb = pCurHcb->HCS_ActScb; if ((pCurScb->SCB_Flags & SCF_DIR) == SCF_DOUT) { return (6); /* wrong direction */ } TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, pCurScb->SCB_BufLen); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_DMA_IN); /* 7/25/95 */ if (pCurScb->SCB_Flags & SCF_SG) { /* S/G xfer */ TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, ((ULONG) pCurScb->SCB_SGLen) << 3); TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr); TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_SG_IN); } else { TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, pCurScb->SCB_BufLen); TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr); TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_IN); } pCurScb->SCB_NxtStat = 0x5; return (0); /* return to OS, wait xfer done , let jas_isr come in */ } /***************************************************************************/ int tul_xfer_data_out(HCS * pCurHcb) { SCB *pCurScb = pCurHcb->HCS_ActScb; if ((pCurScb->SCB_Flags & SCF_DIR) == SCF_DIN) { return (6); /* wrong direction */ } TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, pCurScb->SCB_BufLen); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_DMA_OUT); if (pCurScb->SCB_Flags & SCF_SG) { /* S/G xfer */ TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, ((ULONG) pCurScb->SCB_SGLen) << 3); TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr); TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_SG_OUT); } else { TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, pCurScb->SCB_BufLen); TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr); TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_OUT); } pCurScb->SCB_NxtStat = 0x5; return (0); /* return to OS, wait xfer done , let jas_isr come in */ } /***************************************************************************/ int tul_xpad_in(HCS * pCurHcb) { SCB *pCurScb = pCurHcb->HCS_ActScb; TCS *pCurTcb = pCurHcb->HCS_ActTcs; if ((pCurScb->SCB_Flags & SCF_DIR) != SCF_NO_DCHK) { pCurScb->SCB_HaStat = HOST_DO_DU; /* over run */ } for (;;) { if (pCurTcb->TCS_JS_Period & TSC_WIDE_SCSI) TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 2); else TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN); if ((wait_tulip(pCurHcb)) == -1) { return (-1); } if (pCurHcb->HCS_Phase != DATA_IN) { TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); return (6); } TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); } } int tul_xpad_out(HCS * pCurHcb) { SCB *pCurScb = pCurHcb->HCS_ActScb; TCS *pCurTcb = pCurHcb->HCS_ActTcs; if ((pCurScb->SCB_Flags & SCF_DIR) != SCF_NO_DCHK) { pCurScb->SCB_HaStat = HOST_DO_DU; /* over run */ } for (;;) { if (pCurTcb->TCS_JS_Period & TSC_WIDE_SCSI) TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 2); else TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 0); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT); if ((wait_tulip(pCurHcb)) == -1) { return (-1); } if (pCurHcb->HCS_Phase != DATA_OUT) { /* Disable wide CPU to allow read 16 bits */ TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); return (6); } } } /***************************************************************************/ int tul_status_msg(HCS * pCurHcb) { /* status & MSG_IN */ SCB *pCurScb = pCurHcb->HCS_ActScb; BYTE msg; TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_CMD_COMP); if ((wait_tulip(pCurHcb)) == -1) { return (-1); } /* get status */ pCurScb->SCB_TaStat = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); if (pCurHcb->HCS_Phase == MSG_OUT) { if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) { TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_PARITY); } else { TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP); } TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT); return (wait_tulip(pCurHcb)); } if (pCurHcb->HCS_Phase == MSG_IN) { msg = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) { /* Parity error */ if ((tul_msgin_accept(pCurHcb)) == -1) return (-1); if (pCurHcb->HCS_Phase != MSG_OUT) return (tul_bad_seq(pCurHcb)); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_PARITY); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT); return (wait_tulip(pCurHcb)); } if (msg == 0) { /* Command complete */ if ((pCurScb->SCB_TaStat & 0x18) == 0x10) { /* No link support */ return (tul_bad_seq(pCurHcb)); } TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT); return tul_wait_done_disc(pCurHcb); } if ((msg == MSG_LINK_COMP) || (msg == MSG_LINK_FLAG)) { if ((pCurScb->SCB_TaStat & 0x18) == 0x10) return (tul_msgin_accept(pCurHcb)); } } return (tul_bad_seq(pCurHcb)); } /***************************************************************************/ /* scsi bus free */ int int_tul_busfree(HCS * pCurHcb) { SCB *pCurScb = pCurHcb->HCS_ActScb; if (pCurScb != NULL) { if (pCurScb->SCB_Status & SCB_SELECT) { /* selection timeout */ tul_unlink_pend_scb(pCurHcb, pCurScb); pCurScb->SCB_HaStat = HOST_SEL_TOUT; tul_append_done_scb(pCurHcb, pCurScb); } else { /* Unexpected bus free */ tul_unlink_busy_scb(pCurHcb, pCurScb); pCurScb->SCB_HaStat = HOST_BUS_FREE; tul_append_done_scb(pCurHcb, pCurScb); } pCurHcb->HCS_ActScb = NULL; pCurHcb->HCS_ActTcs = NULL; } TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */ TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT); TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */ return (-1); } /***************************************************************************/ /* scsi bus reset */ int int_tul_scsi_rst(HCS * pCurHcb) { SCB *pCurScb; int i; /* if DMA xfer is pending, abort DMA xfer */ if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & 0x01) { TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_ABT | TAX_X_CLR_FIFO); /* wait Abort DMA xfer done */ while ((TUL_RD(pCurHcb->HCS_Base, TUL_Int) & 0x04) == 0); TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); } /* Abort all active & disconnected scb */ while ((pCurScb = tul_pop_busy_scb(pCurHcb)) != NULL) { pCurScb->SCB_HaStat = HOST_BAD_PHAS; tul_append_done_scb(pCurHcb, pCurScb); } pCurHcb->HCS_ActScb = NULL; pCurHcb->HCS_ActTcs = NULL; /* clr sync nego. done flag */ for (i = 0; i < pCurHcb->HCS_MaxTar; i++) { pCurHcb->HCS_Tcs[i].TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE); } return (-1); } /***************************************************************************/ /* scsi reselection */ int int_tul_resel(HCS * pCurHcb) { SCB *pCurScb; TCS *pCurTcb; BYTE tag, msg = 0; BYTE tar, lun; if ((pCurScb = pCurHcb->HCS_ActScb) != NULL) { if (pCurScb->SCB_Status & SCB_SELECT) { /* if waiting for selection complete */ pCurScb->SCB_Status &= ~SCB_SELECT; } pCurHcb->HCS_ActScb = NULL; } /* --------- get target id---------------------- */ tar = TUL_RD(pCurHcb->HCS_Base, TUL_SBusId); /* ------ get LUN from Identify message----------- */ lun = TUL_RD(pCurHcb->HCS_Base, TUL_SIdent) & 0x0F; /* 07/22/98 from 0x1F -> 0x0F */ pCurTcb = &pCurHcb->HCS_Tcs[tar]; pCurHcb->HCS_ActTcs = pCurTcb; TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurTcb->TCS_SConfig0); TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurTcb->TCS_JS_Period); /* ------------- tag queueing ? ------------------- */ if (pCurTcb->TCS_DrvFlags & TCF_DRV_EN_TAG) { if ((tul_msgin_accept(pCurHcb)) == -1) return (-1); if (pCurHcb->HCS_Phase != MSG_IN) goto no_tag; TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN); if ((wait_tulip(pCurHcb)) == -1) return (-1); msg = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); /* Read Tag Message */ if ((msg < MSG_STAG) || (msg > MSG_OTAG)) /* Is simple Tag */ goto no_tag; if ((tul_msgin_accept(pCurHcb)) == -1) return (-1); if (pCurHcb->HCS_Phase != MSG_IN) goto no_tag; TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN); if ((wait_tulip(pCurHcb)) == -1) return (-1); tag = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); /* Read Tag ID */ pCurScb = pCurHcb->HCS_Scb + tag; if ((pCurScb->SCB_Target != tar) || (pCurScb->SCB_Lun != lun)) { return tul_msgout_abort_tag(pCurHcb); } if (pCurScb->SCB_Status != SCB_BUSY) { /* 03/24/95 */ return tul_msgout_abort_tag(pCurHcb); } pCurHcb->HCS_ActScb = pCurScb; if ((tul_msgin_accept(pCurHcb)) == -1) return (-1); } else { /* No tag */ no_tag: if ((pCurScb = tul_find_busy_scb(pCurHcb, tar | (lun << 8))) == NULL) { return tul_msgout_abort_targ(pCurHcb); } pCurHcb->HCS_ActScb = pCurScb; if (!(pCurTcb->TCS_DrvFlags & TCF_DRV_EN_TAG)) { if ((tul_msgin_accept(pCurHcb)) == -1) return (-1); } } return 0; } /***************************************************************************/ int int_tul_bad_seq(HCS * pCurHcb) { /* target wrong phase */ SCB *pCurScb; int i; tul_reset_scsi(pCurHcb, 10); while ((pCurScb = tul_pop_busy_scb(pCurHcb)) != NULL) { pCurScb->SCB_HaStat = HOST_BAD_PHAS; tul_append_done_scb(pCurHcb, pCurScb); } for (i = 0; i < pCurHcb->HCS_MaxTar; i++) { pCurHcb->HCS_Tcs[i].TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);; } return (-1); } /***************************************************************************/ int tul_msgout_abort_targ(HCS * pCurHcb) { TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN)); if (tul_msgin_accept(pCurHcb) == -1) return (-1); if (pCurHcb->HCS_Phase != MSG_OUT) return (tul_bad_seq(pCurHcb)); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_ABORT); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT); return tul_wait_disc(pCurHcb); } /***************************************************************************/ int tul_msgout_abort_tag(HCS * pCurHcb) { TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN)); if (tul_msgin_accept(pCurHcb) == -1) return (-1); if (pCurHcb->HCS_Phase != MSG_OUT) return (tul_bad_seq(pCurHcb)); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_ABORT_TAG); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT); return tul_wait_disc(pCurHcb); } /***************************************************************************/ int tul_msgin(HCS * pCurHcb) { TCS *pCurTcb; for (;;) { TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN); if ((wait_tulip(pCurHcb)) == -1) return (-1); switch (TUL_RD(pCurHcb->HCS_Base, TUL_SFifo)) { case MSG_DISC: /* Disconnect msg */ TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT); return tul_wait_disc(pCurHcb); case MSG_SDP: case MSG_RESTORE: case MSG_NOP: tul_msgin_accept(pCurHcb); break; case MSG_REJ: /* Clear ATN first */ TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, (TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7))); pCurTcb = pCurHcb->HCS_ActTcs; if ((pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) { /* do sync nego */ TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN)); } tul_msgin_accept(pCurHcb); break; case MSG_EXTEND: /* extended msg */ tul_msgin_extend(pCurHcb); break; case MSG_IGNOREWIDE: tul_msgin_accept(pCurHcb); break; /* get */ TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN); if (wait_tulip(pCurHcb) == -1) return -1; TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 0); /* put pad */ TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); /* get IGNORE field */ TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); /* get pad */ tul_msgin_accept(pCurHcb); break; case MSG_COMP: { TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT); return tul_wait_done_disc(pCurHcb); } default: tul_msgout_reject(pCurHcb); break; } if (pCurHcb->HCS_Phase != MSG_IN) return (pCurHcb->HCS_Phase); } /* statement won't reach here */ } /***************************************************************************/ int tul_msgout_reject(HCS * pCurHcb) { TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN)); if ((tul_msgin_accept(pCurHcb)) == -1) return (-1); if (pCurHcb->HCS_Phase == MSG_OUT) { TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_REJ); /* Msg reject */ TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT); return (wait_tulip(pCurHcb)); } return (pCurHcb->HCS_Phase); } /***************************************************************************/ int tul_msgout_ide(HCS * pCurHcb) { TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_IDE); /* Initiator Detected Error */ TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT); return (wait_tulip(pCurHcb)); } /***************************************************************************/ int tul_msgin_extend(HCS * pCurHcb) { BYTE len, idx; if (tul_msgin_accept(pCurHcb) != MSG_IN) return (pCurHcb->HCS_Phase); /* Get extended msg length */ TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN); if (wait_tulip(pCurHcb) == -1) return (-1); len = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); pCurHcb->HCS_Msg[0] = len; for (idx = 1; len != 0; len--) { if ((tul_msgin_accept(pCurHcb)) != MSG_IN) return (pCurHcb->HCS_Phase); TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN); if (wait_tulip(pCurHcb) == -1) return (-1); pCurHcb->HCS_Msg[idx++] = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); } if (pCurHcb->HCS_Msg[1] == 1) { /* if it's synchronous data transfer request */ if (pCurHcb->HCS_Msg[0] != 3) /* if length is not right */ return (tul_msgout_reject(pCurHcb)); if (pCurHcb->HCS_ActTcs->TCS_Flags & TCF_NO_SYNC_NEGO) { /* Set OFFSET=0 to do async, nego back */ pCurHcb->HCS_Msg[3] = 0; } else { if ((tul_msgin_sync(pCurHcb) == 0) && (pCurHcb->HCS_ActTcs->TCS_Flags & TCF_SYNC_DONE)) { tul_sync_done(pCurHcb); return (tul_msgin_accept(pCurHcb)); } } TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN)); if ((tul_msgin_accept(pCurHcb)) != MSG_OUT) return (pCurHcb->HCS_Phase); /* sync msg out */ TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); tul_sync_done(pCurHcb); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurHcb->HCS_Msg[2]); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurHcb->HCS_Msg[3]); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT); return (wait_tulip(pCurHcb)); } if ((pCurHcb->HCS_Msg[0] != 2) || (pCurHcb->HCS_Msg[1] != 3)) return (tul_msgout_reject(pCurHcb)); /* if it's WIDE DATA XFER REQ */ if (pCurHcb->HCS_ActTcs->TCS_Flags & TCF_NO_WDTR) { pCurHcb->HCS_Msg[2] = 0; } else { if (pCurHcb->HCS_Msg[2] > 2) /* > 32 bits */ return (tul_msgout_reject(pCurHcb)); if (pCurHcb->HCS_Msg[2] == 2) { /* == 32 */ pCurHcb->HCS_Msg[2] = 1; } else { if ((pCurHcb->HCS_ActTcs->TCS_Flags & TCF_NO_WDTR) == 0) { wdtr_done(pCurHcb); if ((pCurHcb->HCS_ActTcs->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN)); return (tul_msgin_accept(pCurHcb)); } } } TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN)); if (tul_msgin_accept(pCurHcb) != MSG_OUT) return (pCurHcb->HCS_Phase); /* WDTR msg out */ TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 2); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurHcb->HCS_Msg[2]); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT); return (wait_tulip(pCurHcb)); } /***************************************************************************/ int tul_msgin_sync(HCS * pCurHcb) { char default_period; default_period = tul_rate_tbl[pCurHcb->HCS_ActTcs->TCS_Flags & TCF_SCSI_RATE]; if (pCurHcb->HCS_Msg[3] > MAX_OFFSET) { pCurHcb->HCS_Msg[3] = MAX_OFFSET; if (pCurHcb->HCS_Msg[2] < default_period) { pCurHcb->HCS_Msg[2] = default_period; return 1; } if (pCurHcb->HCS_Msg[2] >= 59) { /* Change to async */ pCurHcb->HCS_Msg[3] = 0; } return 1; } /* offset requests asynchronous transfers ? */ if (pCurHcb->HCS_Msg[3] == 0) { return 0; } if (pCurHcb->HCS_Msg[2] < default_period) { pCurHcb->HCS_Msg[2] = default_period; return 1; } if (pCurHcb->HCS_Msg[2] >= 59) { pCurHcb->HCS_Msg[3] = 0; return 1; } return 0; } /***************************************************************************/ int wdtr_done(HCS * pCurHcb) { pCurHcb->HCS_ActTcs->TCS_Flags &= ~TCF_SYNC_DONE; pCurHcb->HCS_ActTcs->TCS_Flags |= TCF_WDTR_DONE; pCurHcb->HCS_ActTcs->TCS_JS_Period = 0; if (pCurHcb->HCS_Msg[2]) { /* if 16 bit */ pCurHcb->HCS_ActTcs->TCS_JS_Period |= TSC_WIDE_SCSI; } pCurHcb->HCS_ActTcs->TCS_SConfig0 &= ~TSC_ALT_PERIOD; TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurHcb->HCS_ActTcs->TCS_SConfig0); TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurHcb->HCS_ActTcs->TCS_JS_Period); return 1; } /***************************************************************************/ int tul_sync_done(HCS * pCurHcb) { int i; pCurHcb->HCS_ActTcs->TCS_Flags |= TCF_SYNC_DONE; if (pCurHcb->HCS_Msg[3]) { pCurHcb->HCS_ActTcs->TCS_JS_Period |= pCurHcb->HCS_Msg[3]; for (i = 0; i < 8; i++) { if (tul_rate_tbl[i] >= pCurHcb->HCS_Msg[2]) /* pick the big one */ break; } pCurHcb->HCS_ActTcs->TCS_JS_Period |= (i << 4); pCurHcb->HCS_ActTcs->TCS_SConfig0 |= TSC_ALT_PERIOD; } TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurHcb->HCS_ActTcs->TCS_SConfig0); TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurHcb->HCS_ActTcs->TCS_JS_Period); return (-1); } int tul_post_scsi_rst(HCS * pCurHcb) { SCB *pCurScb; TCS *pCurTcb; int i; pCurHcb->HCS_ActScb = 0; pCurHcb->HCS_ActTcs = 0; pCurHcb->HCS_Flags = 0; while ((pCurScb = tul_pop_busy_scb(pCurHcb)) != NULL) { pCurScb->SCB_HaStat = HOST_BAD_PHAS; tul_append_done_scb(pCurHcb, pCurScb); } /* clear sync done flag */ pCurTcb = &pCurHcb->HCS_Tcs[0]; for (i = 0; i < pCurHcb->HCS_MaxTar; pCurTcb++, i++) { pCurTcb->TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE); /* Initialize the sync. xfer register values to an asyn xfer */ pCurTcb->TCS_JS_Period = 0; pCurTcb->TCS_SConfig0 = pCurHcb->HCS_SConf1; pCurHcb->HCS_ActTags[0] = 0; /* 07/22/98 */ pCurHcb->HCS_Tcs[i].TCS_Flags &= ~TCF_BUSY; /* 07/22/98 */ } /* for */ return (-1); } /***************************************************************************/ void tul_select_atn_stop(HCS * pCurHcb, SCB * pCurScb) { pCurScb->SCB_Status |= SCB_SELECT; pCurScb->SCB_NxtStat = 0x1; pCurHcb->HCS_ActScb = pCurScb; pCurHcb->HCS_ActTcs = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target]; TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_SELATNSTOP); return; } /***************************************************************************/ void tul_select_atn(HCS * pCurHcb, SCB * pCurScb) { int i; pCurScb->SCB_Status |= SCB_SELECT; pCurScb->SCB_NxtStat = 0x2; TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_Ident); for (i = 0; i < (int) pCurScb->SCB_CDBLen; i++) TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_CDB[i]); pCurHcb->HCS_ActTcs = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target]; pCurHcb->HCS_ActScb = pCurScb; TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_SEL_ATN); return; } /***************************************************************************/ void tul_select_atn3(HCS * pCurHcb, SCB * pCurScb) { int i; pCurScb->SCB_Status |= SCB_SELECT; pCurScb->SCB_NxtStat = 0x2; TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_Ident); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagMsg); TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagId); for (i = 0; i < (int) pCurScb->SCB_CDBLen; i++) TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_CDB[i]); pCurHcb->HCS_ActTcs = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target]; pCurHcb->HCS_ActScb = pCurScb; TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_SEL_ATN3); return; } /***************************************************************************/ /* SCSI Bus Device Reset */ int tul_bus_device_reset(HCS * pCurHcb) { SCB *pCurScb = pCurHcb->HCS_ActScb; TCS *pCurTcb = pCurHcb->HCS_ActTcs; SCB *pTmpScb, *pPrevScb; BYTE tar; if (pCurHcb->HCS_Phase != MSG_OUT) { return (int_tul_bad_seq(pCurHcb)); /* Unexpected phase */ } tul_unlink_pend_scb(pCurHcb, pCurScb); tul_release_scb(pCurHcb, pCurScb); tar = pCurScb->SCB_Target; /* target */ pCurTcb->TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE | TCF_BUSY); /* clr sync. nego & WDTR flags 07/22/98 */ /* abort all SCB with same target */ pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy; /* Check Busy queue */ while (pTmpScb != NULL) { if (pTmpScb->SCB_Target == tar) { /* unlink it */ if (pTmpScb == pCurHcb->HCS_FirstBusy) { if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL) pCurHcb->HCS_LastBusy = NULL; } else { pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb; if (pTmpScb == pCurHcb->HCS_LastBusy) pCurHcb->HCS_LastBusy = pPrevScb; } pTmpScb->SCB_HaStat = HOST_ABORTED; tul_append_done_scb(pCurHcb, pTmpScb); } /* Previous haven't change */ else { pPrevScb = pTmpScb; } pTmpScb = pTmpScb->SCB_NxtScb; } TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_DEVRST); TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT); return tul_wait_disc(pCurHcb); } /***************************************************************************/ int tul_msgin_accept(HCS * pCurHcb) { TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT); return (wait_tulip(pCurHcb)); } /***************************************************************************/ int wait_tulip(HCS * pCurHcb) { while (!((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0)) & TSS_INT_PENDING)); pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt); pCurHcb->HCS_Phase = pCurHcb->HCS_JSStatus0 & TSS_PH_MASK; pCurHcb->HCS_JSStatus1 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1); if (pCurHcb->HCS_JSInt & TSS_RESEL_INT) { /* if SCSI bus reset detected */ return (int_tul_resel(pCurHcb)); } if (pCurHcb->HCS_JSInt & TSS_SEL_TIMEOUT) { /* if selected/reselected timeout interrupt */ return (int_tul_busfree(pCurHcb)); } if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) { /* if SCSI bus reset detected */ return (int_tul_scsi_rst(pCurHcb)); } if (pCurHcb->HCS_JSInt & TSS_DISC_INT) { /* BUS disconnection */ if (pCurHcb->HCS_Flags & HCF_EXPECT_DONE_DISC) { TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */ tul_unlink_busy_scb(pCurHcb, pCurHcb->HCS_ActScb); pCurHcb->HCS_ActScb->SCB_HaStat = 0; tul_append_done_scb(pCurHcb, pCurHcb->HCS_ActScb); pCurHcb->HCS_ActScb = NULL; pCurHcb->HCS_ActTcs = NULL; pCurHcb->HCS_Flags &= ~HCF_EXPECT_DONE_DISC; TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT); TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */ return (-1); } if (pCurHcb->HCS_Flags & HCF_EXPECT_DISC) { TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */ pCurHcb->HCS_ActScb = NULL; pCurHcb->HCS_ActTcs = NULL; pCurHcb->HCS_Flags &= ~HCF_EXPECT_DISC; TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT); TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */ return (-1); } return (int_tul_busfree(pCurHcb)); } if (pCurHcb->HCS_JSInt & (TSS_FUNC_COMP | TSS_BUS_SERV)) { return (pCurHcb->HCS_Phase); } return (pCurHcb->HCS_Phase); } /***************************************************************************/ int tul_wait_disc(HCS * pCurHcb) { while (!((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0)) & TSS_INT_PENDING)); pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt); if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) { /* if SCSI bus reset detected */ return (int_tul_scsi_rst(pCurHcb)); } if (pCurHcb->HCS_JSInt & TSS_DISC_INT) { /* BUS disconnection */ TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */ TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT); TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */ pCurHcb->HCS_ActScb = NULL; return (-1); } return (tul_bad_seq(pCurHcb)); } /***************************************************************************/ int tul_wait_done_disc(HCS * pCurHcb) { while (!((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0)) & TSS_INT_PENDING)); pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt); if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) { /* if SCSI bus reset detected */ return (int_tul_scsi_rst(pCurHcb)); } if (pCurHcb->HCS_JSInt & TSS_DISC_INT) { /* BUS disconnection */ TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */ TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT); TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */ tul_unlink_busy_scb(pCurHcb, pCurHcb->HCS_ActScb); tul_append_done_scb(pCurHcb, pCurHcb->HCS_ActScb); pCurHcb->HCS_ActScb = NULL; return (-1); } return (tul_bad_seq(pCurHcb)); } /**************************** EOF *********************************/