https://github.com/torvalds/linux
Tip revision: ae99a78af33f00565a05dbbc6ca9b247fed002c5 authored by Linus Torvalds on 31 October 2006, 03:37:36 UTC
Linux 2.6.19-rc4
Linux 2.6.19-rc4
Tip revision: ae99a78
initio.c
/**************************************************************************
* 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/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 <linux/dma-mapping.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 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 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);
/* PCI Devices supported by this driver */
static struct pci_device_id i91u_pci_devices[] __devinitdata = {
{ PCI_VENDOR_ID_INIT, I950_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{ PCI_VENDOR_ID_INIT, I940_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{ PCI_VENDOR_ID_INIT, I935_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{ PCI_VENDOR_ID_INIT, I920_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{ PCI_VENDOR_ID_DOMEX, I920_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
{ }
};
MODULE_DEVICE_TABLE(pci, i91u_pci_devices);
#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);
static 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);
/* ---- INTERNAL VARIABLES ---- */
static HCS tul_hcs[MAX_SUPPORTED_ADAPTERS];
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)
******************************************************************/
static 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
*******************************************************************/
static 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
*******************************************************************/
static 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 */
static 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;
}
static 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;
}
static 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);
}
/***************************************************************************/
static 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;
}
/***************************************************************************/
static 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);
}
/***************************************************************************/
static 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);
#ifdef 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);
}
/***************************************************************************/
static 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);
}
/***************************************************************************/
static 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);
}
/***************************************************************************/
static 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;
}
}
/***************************************************************************/
static 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;
}
}
/***************************************************************************/
static 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);
}
/***************************************************************************/
static 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;
}
/***************************************************************************/
static 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;
}
}
/***************************************************************************/
static 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);
}
/***************************************************************************/
static 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);
}
/***************************************************************************/
static 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);
}
/***************************************************************************/
static 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);
}
/***************************************************************************/
static 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));
}
#if 0
/************************************************************************/
static 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;
}
static 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);
}
#endif /* 0 */
/************************************************************************/
static 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;
}
/***************************************************************************/
static 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 */
static 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;
}
/***************************************************************************/
static 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 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 < ARRAY_SIZE(i91u_pci_devices); i++)
{
while ((pDev = pci_find_device(i91u_pci_devices[i].vendor, i91u_pci_devices[i].device, 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, DMA_32BIT_MASK)) {
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, IRQF_DISABLED | IRQF_SHARED, "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;
spin_lock_irq(SCpnt->device->host->host_lock);
tul_reset_scsi(pHCB, 0);
spin_unlock_irq(SCpnt->device->host->host_lock);
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"
