diff options
Diffstat (limited to 'drivers/scsi/initio.c')
| -rw-r--r-- | drivers/scsi/initio.c | 3184 |
1 files changed, 3184 insertions, 0 deletions
diff --git a/drivers/scsi/initio.c b/drivers/scsi/initio.c new file mode 100644 index 00000000000..a7b74d8c53b --- /dev/null +++ b/drivers/scsi/initio.c @@ -0,0 +1,3184 @@ +/************************************************************************** + * 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 General 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. + * + ************************************************************************* + * + * DESCRIPTION: + * + * This is the Linux low-level SCSI driver for Initio INI-9X00U/UW SCSI host + * adapters + * + * 08/06/97 hc - v1.01h + * - Support inic-940 and inic-935 + * 09/26/97 hc - v1.01i + * - Make correction from J.W. Schultz suggestion + * 10/13/97 hc - Support reset function + * 10/21/97 hc - v1.01j + * - Support 32 LUN (SCSI 3) + * 01/14/98 hc - v1.01k + * - Fix memory allocation problem + * 03/04/98 hc - v1.01l + * - Fix tape rewind which will hang the system problem + * - Set can_queue to tul_num_scb + * 06/25/98 hc - v1.01m + * - Get it work for kernel version >= 2.1.75 + * - Dynamic assign SCSI bus reset holding time in init_tulip() + * 07/02/98 hc - v1.01n + * - Support 0002134A + * 08/07/98 hc - v1.01o + * - Change the tul_abort_srb routine to use scsi_done. <01> + * 09/07/98 hl - v1.02 + * - Change the INI9100U define and proc_dir_entry to + * reflect the newer Kernel 2.1.118, but the v1.o1o + * should work with Kernel 2.1.118. + * 09/20/98 wh - v1.02a + * - Support Abort command. + * - Handle reset routine. + * 09/21/98 hl - v1.03 + * - remove comments. + * 12/09/98 bv - v1.03a + * - Removed unused code + * 12/13/98 bv - v1.03b + * - Remove cli() locking for kernels >= 2.1.95. This uses + * spinlocks to serialize access to the pSRB_head and + * pSRB_tail members of the HCS structure. + * 09/01/99 bv - v1.03d + * - Fixed a deadlock problem in SMP. + * 21/01/99 bv - v1.03e + * - Add support for the Domex 3192U PCI SCSI + * This is a slightly modified patch by + * Brian Macy <bmacy@sunshinecomputing.com> + * 22/02/99 bv - v1.03f + * - Didn't detect the INIC-950 in 2.0.x correctly. + * Now fixed. + * 05/07/99 bv - v1.03g + * - Changed the assumption that HZ = 100 + * 10/17/03 mc - v1.04 + * - added new DMA API support + * 06/01/04 jmd - v1.04a + * - Re-add reset_bus support + **************************************************************************/ + +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/delay.h> +#include <linux/pci.h> +#include <linux/init.h> +#include <linux/blkdev.h> +#include <linux/spinlock.h> +#include <linux/stat.h> +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/proc_fs.h> +#include <linux/string.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/jiffies.h> +#include <asm/io.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_tcq.h> + +#include "initio.h" + +#define SENSE_SIZE 14 + +#define i91u_MAXQUEUE 2 +#define i91u_REVID "Initio INI-9X00U/UW SCSI device driver; Revision: 1.04a" + +#define INI_VENDOR_ID 0x1101 /* Initio's PCI vendor ID */ +#define DMX_VENDOR_ID 0x134a /* Domex's PCI vendor ID */ +#define I950_DEVICE_ID 0x9500 /* Initio's inic-950 product ID */ +#define I940_DEVICE_ID 0x9400 /* Initio's inic-940 product ID */ +#define I935_DEVICE_ID 0x9401 /* Initio's inic-935 product ID */ +#define I920_DEVICE_ID 0x0002 /* Initio's other product ID */ + +#ifdef DEBUG_i91u +static unsigned int i91u_debug = DEBUG_DEFAULT; +#endif + +#define TULSZ(sz) (sizeof(sz) / sizeof(sz[0])) +#define TUL_RDWORD(x,y) (short)(inl((int)((ULONG)((ULONG)x+(UCHAR)y)) )) + +typedef struct PCI_ID_Struc { + unsigned short vendor_id; + unsigned short device_id; +} PCI_ID; + +static int tul_num_ch = 4; /* Maximum 4 adapters */ +static int tul_num_scb; +static int tul_tag_enable = 1; +static SCB *tul_scb; + +#ifdef DEBUG_i91u +static int setup_debug = 0; +#endif + +static void i91uSCBPost(BYTE * pHcb, BYTE * pScb); + +static const PCI_ID i91u_pci_devices[] = { + { INI_VENDOR_ID, I950_DEVICE_ID }, + { INI_VENDOR_ID, I940_DEVICE_ID }, + { INI_VENDOR_ID, I935_DEVICE_ID }, + { INI_VENDOR_ID, I920_DEVICE_ID }, + { DMX_VENDOR_ID, I920_DEVICE_ID }, +}; + +#define DEBUG_INTERRUPT 0 +#define DEBUG_QUEUE 0 +#define DEBUG_STATE 0 +#define INT_DISC 0 + +/*--- 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 */ +}; + +static void tul_do_pause(unsigned amount) +{ /* Pause for amount jiffies */ + unsigned long the_time = jiffies + amount; + + while (time_before_eq(jiffies, the_time)); +} + +/*-- forward reference --*/ + +/******************************************************************* + Use memeory refresh time ~ 15us * 2 +********************************************************************/ +void tul_se2_wait(void) +{ +#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 1; + } 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 0; + } + return 1; +} + +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 * HZ); + + 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; + BYTE *pwFlags; + BYTE *pbHeads; + SCB *pTmpScb, *pPrevScb = NULL; + + pCurHcb->HCS_NumScbs = tul_num_scb; + pCurHcb->HCS_Semaph = 1; + spin_lock_init(&pCurHcb->HCS_SemaphLock); + 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; + spin_lock_init(&pCurHcb->HCS_AvailLock); + 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 = & (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; + spin_lock_irqsave(&(hcsp->HCS_AvailLock), flags); + 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; + } + spin_unlock_irqrestore(&(hcsp->HCS_AvailLock), flags); + return (pTmpScb); +} + +/***************************************************************************/ +void tul_release_scb(HCS * hcsp, SCB * scbp) +{ + ULONG flags; + +#if DEBUG_QUEUE + printk("Release SCB %lx; ", (ULONG) scbp); +#endif + spin_lock_irqsave(&(hcsp->HCS_AvailLock), flags); + scbp->SCB_Srb = NULL; + 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; + } + spin_unlock_irqrestore(&(hcsp->HCS_AvailLock), flags); +} + +/***************************************************************************/ +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, struct scsi_cmnd *srbp) +{ + ULONG flags; + SCB *pTmpScb, *pPrevScb; + + spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); + + if ((pCurHcb->HCS_Semaph == 0) && (pCurHcb->HCS_ActScb == NULL)) { + TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F); + /* disable Jasmin SCSI Int */ + + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + + tulip_main(pCurHcb); + + spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); + + pCurHcb->HCS_Semaph = 1; + TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F); + + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + + return SCSI_ABORT_SNOOZE; + } + pPrevScb = pTmpScb = pCurHcb->HCS_FirstPend; /* Check Pend queue */ + while (pTmpScb != NULL) { + /* 07/27/98 */ + if (pTmpScb->SCB_Srb == srbp) { + if (pTmpScb == pCurHcb->HCS_ActScb) { + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + 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); + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + 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 == srbp) { + + if (pTmpScb == pCurHcb->HCS_ActScb) { + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + return SCSI_ABORT_BUSY; + } else if (pTmpScb->SCB_TagMsg == 0) { + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + 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); + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + return SCSI_ABORT_SUCCESS; + } + } + pPrevScb = pTmpScb; + pTmpScb = pTmpScb->SCB_NxtScb; + } + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + 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, struct scsi_cmnd *pSrb, + unsigned int target, unsigned int ResetFlags) +{ + ULONG flags; + SCB *pScb; + spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); + + 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 */ + + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + + tulip_main(pCurHcb); + + spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); + + pCurHcb->HCS_Semaph = 1; + TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F); + + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + + return SCSI_RESET_SNOOZE; + } + pScb = pCurHcb->HCS_FirstBusy; /* Check Busy queue */ + while (pScb != NULL) { + if (pScb->SCB_Srb == pSrb) + break; + pScb = pScb->SCB_NxtScb; + } + if (pScb == NULL) { + printk("Unable to Reset - No SCB Found\n"); + + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + return SCSI_RESET_NOT_RUNNING; + } + } + if ((pScb = tul_alloc_scb(pCurHcb)) == NULL) { + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + 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 = NULL; + if (ResetFlags & SCSI_RESET_SYNCHRONOUS) { + pScb->SCB_Srb = 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; + + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + + tulip_main(pCurHcb); + + spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); + + pCurHcb->HCS_Semaph = 1; + TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F); + } + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + return SCSI_RESET_PENDING; +} + +int tul_reset_scsi_bus(HCS * pCurHcb) +{ + ULONG flags; + + spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); + TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F); + pCurHcb->HCS_Semaph = 0; + + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + + tul_stop_bm(pCurHcb); + + tul_reset_scsi(pCurHcb, 2); /* 7/29/98 */ + + spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); + tul_post_scsi_rst(pCurHcb); + + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + + tulip_main(pCurHcb); + + spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); + + pCurHcb->HCS_Semaph = 1; + TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F); + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + 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; + + spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); + + 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; + + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + + tulip_main(pCurHcb); + + spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags); + + pCurHcb->HCS_Semaph = 1; + TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F); + } + spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags); + 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 == INI_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) { + if (tul_abort_srb(pCurHcb, pCurScb->SCB_Srb) != 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 = NULL; + pCurHcb->HCS_ActTcs = NULL; + 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)); +} + +static irqreturn_t i91u_intr(int irqno, void *dev_id, struct pt_regs *regs) +{ + struct Scsi_Host *dev = dev_id; + unsigned long flags; + + spin_lock_irqsave(dev->host_lock, flags); + tul_isr((HCS *)dev->base); + spin_unlock_irqrestore(dev->host_lock, flags); + return IRQ_HANDLED; +} + +static int tul_NewReturnNumberOfAdapters(void) +{ + struct pci_dev *pDev = NULL; /* Start from none */ + int iAdapters = 0; + long dRegValue; + WORD wBIOS; + int i = 0; + + init_i91uAdapter_table(); + + for (i = 0; i < TULSZ(i91u_pci_devices); i++) + { + while ((pDev = pci_find_device(i91u_pci_devices[i].vendor_id, i91u_pci_devices[i].device_id, pDev)) != NULL) { + if (pci_enable_device(pDev)) + continue; + pci_read_config_dword(pDev, 0x44, (u32 *) & dRegValue); + wBIOS = (UWORD) (dRegValue & 0xFF); + if (((dRegValue & 0xFF00) >> 8) == 0xFF) + dRegValue = 0; + wBIOS = (wBIOS << 8) + ((UWORD) ((dRegValue & 0xFF00) >> 8)); + if (pci_set_dma_mask(pDev, 0xffffffff)) { + printk(KERN_WARNING + "i91u: Could not set 32 bit DMA mask\n"); + continue; + } + + if (Addi91u_into_Adapter_table(wBIOS, + (pDev->resource[0].start), + pDev->irq, + pDev->bus->number, + (pDev->devfn >> 3) + ) == 0) + iAdapters++; + } + } + + return (iAdapters); +} + +static int i91u_detect(struct scsi_host_template * tpnt) +{ + HCS *pHCB; + struct Scsi_Host *hreg; + unsigned long i; /* 01/14/98 */ + int ok = 0, iAdapters; + ULONG dBiosAdr; + BYTE *pbBiosAdr; + + /* Get total number of adapters in the motherboard */ + iAdapters = tul_NewReturnNumberOfAdapters(); + if (iAdapters == 0) /* If no tulip founded, return */ + return (0); + + tul_num_ch = (iAdapters > tul_num_ch) ? tul_num_ch : iAdapters; + /* Update actually channel number */ + if (tul_tag_enable) { /* 1.01i */ + tul_num_scb = MAX_TARGETS * i91u_MAXQUEUE; + } else { + tul_num_scb = MAX_TARGETS + 3; /* 1-tape, 1-CD_ROM, 1- extra */ + } /* Update actually SCBs per adapter */ + + /* Get total memory needed for HCS */ + i = tul_num_ch * sizeof(HCS); + memset((unsigned char *) &tul_hcs[0], 0, i); /* Initialize tul_hcs 0 */ + /* Get total memory needed for SCB */ + + for (; tul_num_scb >= MAX_TARGETS + 3; tul_num_scb--) { + i = tul_num_ch * tul_num_scb * sizeof(SCB); + if ((tul_scb = (SCB *) kmalloc(i, GFP_ATOMIC | GFP_DMA)) != NULL) + break; + } + if (tul_scb == NULL) { + printk("i91u: SCB memory allocation error\n"); + return (0); + } + memset((unsigned char *) tul_scb, 0, i); + + for (i = 0, pHCB = &tul_hcs[0]; /* Get pointer for control block */ + i < tul_num_ch; + i++, pHCB++) { + get_tulipPCIConfig(pHCB, i); + + dBiosAdr = pHCB->HCS_BIOS; + dBiosAdr = (dBiosAdr << 4); + + pbBiosAdr = phys_to_virt(dBiosAdr); + + init_tulip(pHCB, tul_scb + (i * tul_num_scb), tul_num_scb, pbBiosAdr, 10); + request_region(pHCB->HCS_Base, 256, "i91u"); /* Register */ + + pHCB->HCS_Index = i; /* 7/29/98 */ + hreg = scsi_register(tpnt, sizeof(HCS)); + if(hreg == NULL) { + release_region(pHCB->HCS_Base, 256); + return 0; + } + hreg->io_port = pHCB->HCS_Base; + hreg->n_io_port = 0xff; + hreg->can_queue = tul_num_scb; /* 03/05/98 */ + hreg->unique_id = pHCB->HCS_Base; + hreg->max_id = pHCB->HCS_MaxTar; + hreg->max_lun = 32; /* 10/21/97 */ + hreg->irq = pHCB->HCS_Intr; + hreg->this_id = pHCB->HCS_SCSI_ID; /* Assign HCS index */ + hreg->base = (unsigned long)pHCB; + hreg->sg_tablesize = TOTAL_SG_ENTRY; /* Maximun support is 32 */ + + /* Initial tulip chip */ + ok = request_irq(pHCB->HCS_Intr, i91u_intr, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg); + if (ok < 0) { + printk(KERN_WARNING "i91u: unable to request IRQ %d\n\n", pHCB->HCS_Intr); + return 0; + } + } + + tpnt->this_id = -1; + tpnt->can_queue = 1; + + return 1; +} + +static void i91uBuildSCB(HCS * pHCB, SCB * pSCB, struct scsi_cmnd * SCpnt) +{ /* Create corresponding SCB */ + struct scatterlist *pSrbSG; + SG *pSG; /* Pointer to SG list */ + int i; + long TotalLen; + dma_addr_t dma_addr; + + pSCB->SCB_Post = i91uSCBPost; /* i91u's callback routine */ + pSCB->SCB_Srb = SCpnt; + pSCB->SCB_Opcode = ExecSCSI; + pSCB->SCB_Flags = SCF_POST; /* After SCSI done, call post routine */ + pSCB->SCB_Target = SCpnt->device->id; + pSCB->SCB_Lun = SCpnt->device->lun; + pSCB->SCB_Ident = SCpnt->device->lun | DISC_ALLOW; + + pSCB->SCB_Flags |= SCF_SENSE; /* Turn on auto request sense */ + dma_addr = dma_map_single(&pHCB->pci_dev->dev, SCpnt->sense_buffer, + SENSE_SIZE, DMA_FROM_DEVICE); + pSCB->SCB_SensePtr = cpu_to_le32((u32)dma_addr); + pSCB->SCB_SenseLen = cpu_to_le32(SENSE_SIZE); + SCpnt->SCp.ptr = (char *)(unsigned long)dma_addr; + + pSCB->SCB_CDBLen = SCpnt->cmd_len; + pSCB->SCB_HaStat = 0; + pSCB->SCB_TaStat = 0; + memcpy(&pSCB->SCB_CDB[0], &SCpnt->cmnd, SCpnt->cmd_len); + + if (SCpnt->device->tagged_supported) { /* Tag Support */ + pSCB->SCB_TagMsg = SIMPLE_QUEUE_TAG; /* Do simple tag only */ + } else { + pSCB->SCB_TagMsg = 0; /* No tag support */ + } + /* todo handle map_sg error */ + if (SCpnt->use_sg) { + dma_addr = dma_map_single(&pHCB->pci_dev->dev, &pSCB->SCB_SGList[0], + sizeof(struct SG_Struc) * TOTAL_SG_ENTRY, + DMA_BIDIRECTIONAL); + pSCB->SCB_BufPtr = cpu_to_le32((u32)dma_addr); + SCpnt->SCp.dma_handle = dma_addr; + + pSrbSG = (struct scatterlist *) SCpnt->request_buffer; + pSCB->SCB_SGLen = dma_map_sg(&pHCB->pci_dev->dev, pSrbSG, + SCpnt->use_sg, SCpnt->sc_data_direction); + + pSCB->SCB_Flags |= SCF_SG; /* Turn on SG list flag */ + for (i = 0, TotalLen = 0, pSG = &pSCB->SCB_SGList[0]; /* 1.01g */ + i < pSCB->SCB_SGLen; i++, pSG++, pSrbSG++) { + pSG->SG_Ptr = cpu_to_le32((u32)sg_dma_address(pSrbSG)); + TotalLen += pSG->SG_Len = cpu_to_le32((u32)sg_dma_len(pSrbSG)); + } + + pSCB->SCB_BufLen = (SCpnt->request_bufflen > TotalLen) ? + TotalLen : SCpnt->request_bufflen; + } else if (SCpnt->request_bufflen) { /* Non SG */ + dma_addr = dma_map_single(&pHCB->pci_dev->dev, SCpnt->request_buffer, + SCpnt->request_bufflen, + SCpnt->sc_data_direction); + SCpnt->SCp.dma_handle = dma_addr; + pSCB->SCB_BufPtr = cpu_to_le32((u32)dma_addr); + pSCB->SCB_BufLen = cpu_to_le32((u32)SCpnt->request_bufflen); + pSCB->SCB_SGLen = 0; + } else { + pSCB->SCB_BufLen = 0; + pSCB->SCB_SGLen = 0; + } +} + +static int i91u_queuecommand(struct scsi_cmnd *cmd, + void (*done)(struct scsi_cmnd *)) +{ + HCS *pHCB = (HCS *) cmd->device->host->base; + register SCB *pSCB; + + cmd->scsi_done = done; + + pSCB = tul_alloc_scb(pHCB); + if (!pSCB) + return SCSI_MLQUEUE_HOST_BUSY; + + i91uBuildSCB(pHCB, pSCB, cmd); + tul_exec_scb(pHCB, pSCB); + return 0; +} + +#if 0 /* no new EH yet */ +/* + * Abort a queued command + * (commands that are on the bus can't be aborted easily) + */ +static int i91u_abort(struct scsi_cmnd * SCpnt) +{ + HCS *pHCB; + + pHCB = (HCS *) SCpnt->device->host->base; + return tul_abort_srb(pHCB, SCpnt); +} + +/* + * Reset registers, reset a hanging bus and + * kill active and disconnected commands for target w/o soft reset + */ +static int i91u_reset(struct scsi_cmnd * SCpnt, unsigned int reset_flags) +{ /* I need Host Control Block Information */ + HCS *pHCB; + + pHCB = (HCS *) SCpnt->device->host->base; + + if (reset_flags & (SCSI_RESET_SUGGEST_BUS_RESET | SCSI_RESET_SUGGEST_HOST_RESET)) + return tul_reset_scsi_bus(pHCB); + else + return tul_device_reset(pHCB, SCpnt, SCpnt->device->id, reset_flags); +} +#endif + +static int i91u_bus_reset(struct scsi_cmnd * SCpnt) +{ + HCS *pHCB; + + pHCB = (HCS *) SCpnt->device->host->base; + tul_reset_scsi(pHCB, 0); + return SUCCESS; +} + +/* + * Return the "logical geometry" + */ +static int i91u_biosparam(struct scsi_device *sdev, struct block_device *dev, + sector_t capacity, int *info_array) +{ + HCS *pHcb; /* Point to Host adapter control block */ + TCS *pTcb; + + pHcb = (HCS *) sdev->host->base; + pTcb = &pHcb->HCS_Tcs[sdev->id]; + + if (pTcb->TCS_DrvHead) { + info_array[0] = pTcb->TCS_DrvHead; + info_array[1] = pTcb->TCS_DrvSector; + info_array[2] = (unsigned long)capacity / pTcb->TCS_DrvHead / pTcb->TCS_DrvSector; + } else { + if (pTcb->TCS_DrvFlags & TCF_DRV_255_63) { + info_array[0] = 255; + info_array[1] = 63; + info_array[2] = (unsigned long)capacity / 255 / 63; + } else { + info_array[0] = 64; + info_array[1] = 32; + info_array[2] = (unsigned long)capacity >> 11; + } + } + +#if defined(DEBUG_BIOSPARAM) + if (i91u_debug & debug_biosparam) { + printk("bios geometry: head=%d, sec=%d, cyl=%d\n", + info_array[0], info_array[1], info_array[2]); + printk("WARNING: check, if the bios geometry is correct.\n"); + } +#endif + + return 0; +} + +static void i91u_unmap_cmnd(struct pci_dev *pci_dev, struct scsi_cmnd *cmnd) +{ + /* auto sense buffer */ + if (cmnd->SCp.ptr) { + dma_unmap_single(&pci_dev->dev, + (dma_addr_t)((unsigned long)cmnd->SCp.ptr), + SENSE_SIZE, DMA_FROM_DEVICE); + cmnd->SCp.ptr = NULL; + } + + /* request buffer */ + if (cmnd->use_sg) { + dma_unmap_single(&pci_dev->dev, cmnd->SCp.dma_handle, + sizeof(struct SG_Struc) * TOTAL_SG_ENTRY, + DMA_BIDIRECTIONAL); + + dma_unmap_sg(&pci_dev->dev, cmnd->request_buffer, + cmnd->use_sg, + cmnd->sc_data_direction); + } else if (cmnd->request_bufflen) { + dma_unmap_single(&pci_dev->dev, cmnd->SCp.dma_handle, + cmnd->request_bufflen, + cmnd->sc_data_direction); + } +} + +/***************************************************************************** + Function name : i91uSCBPost + Description : This is callback routine be called when tulip finish one + SCSI command. + Input : pHCB - Pointer to host adapter control block. + pSCB - Pointer to SCSI control block. + Output : None. + Return : None. +*****************************************************************************/ +static void i91uSCBPost(BYTE * pHcb, BYTE * pScb) +{ + struct scsi_cmnd *pSRB; /* Pointer to SCSI request block */ + HCS *pHCB; + SCB *pSCB; + + pHCB = (HCS *) pHcb; + pSCB = (SCB *) pScb; + if ((pSRB = pSCB->SCB_Srb) == 0) { + printk("i91uSCBPost: SRB pointer is empty\n"); + + tul_release_scb(pHCB, pSCB); /* Release SCB for current channel */ + return; + } + switch (pSCB->SCB_HaStat) { + case 0x0: + case 0xa: /* Linked command complete without error and linked normally */ + case 0xb: /* Linked command complete without error interrupt generated */ + pSCB->SCB_HaStat = 0; + break; + + case 0x11: /* Selection time out-The initiator selection or target + reselection was not complete within the SCSI Time out period */ + pSCB->SCB_HaStat = DID_TIME_OUT; + break; + + case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus + phase sequence was requested by the target. The host adapter + will generate a SCSI Reset Condition, notifying the host with + a SCRD interrupt */ + pSCB->SCB_HaStat = DID_RESET; + break; + + case 0x1a: /* SCB Aborted. 07/21/98 */ + pSCB->SCB_HaStat = DID_ABORT; + break; + + case 0x12: /* Data overrun/underrun-The target attempted to transfer more data + than was allocated by the Data Length field or the sum of the + Scatter / Gather Data Length fields. */ + case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */ + case 0x16: /* Invalid SCB Operation Code. */ + + default: + printk("ini9100u: %x %x\n", pSCB->SCB_HaStat, pSCB->SCB_TaStat); + pSCB->SCB_HaStat = DID_ERROR; /* Couldn't find any better */ + break; + } + + pSRB->result = pSCB->SCB_TaStat | (pSCB->SCB_HaStat << 16); + + if (pSRB == NULL) { + printk("pSRB is NULL\n"); + } + + i91u_unmap_cmnd(pHCB->pci_dev, pSRB); + pSRB->scsi_done(pSRB); /* Notify system DONE */ + + tul_release_scb(pHCB, pSCB); /* Release SCB for current channel */ +} + +/* + * Release ressources + */ +static int i91u_release(struct Scsi_Host *hreg) +{ + free_irq(hreg->irq, hreg); + release_region(hreg->io_port, 256); + return 0; +} +MODULE_LICENSE("Dual BSD/GPL"); + +static struct scsi_host_template driver_template = { + .proc_name = "INI9100U", + .name = i91u_REVID, + .detect = i91u_detect, + .release = i91u_release, + .queuecommand = i91u_queuecommand, +// .abort = i91u_abort, +// .reset = i91u_reset, + .eh_bus_reset_handler = i91u_bus_reset, + .bios_param = i91u_biosparam, + .can_queue = 1, + .this_id = 1, + .sg_tablesize = SG_ALL, + .cmd_per_lun = 1, + .use_clustering = ENABLE_CLUSTERING, +}; +#include "scsi_module.c" + |