blob: 4c8863a748d32201a90dc512f048290ce49dcb49 [file] [log] [blame]
/**************************************************************************
* 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
**************************************************************************/
#define CVT_LINUX_VERSION(V,P,S) (V * 65536 + P * 256 + S)
#error Please convert me to Documentation/DMA-mapping.txt
#ifndef LINUX_VERSION_CODE
#include <linux/version.h>
#endif
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/blk.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 <asm/io.h>
#include "scsi.h"
#include "hosts.h"
#include "ini9100u.h"
#ifdef DEBUG_i91u
unsigned int i91u_debug = DEBUG_DEFAULT;
#endif
static Scsi_Host_Template driver_template = INI9100U;
#include "scsi_module.c"
char *i91uCopyright = "Copyright (C) 1996-98";
char *i91uInitioName = "by Initio Corporation";
char *i91uProductName = "INI-9X00U/UW";
char *i91uVersion = "v1.03g";
#define TULSZ(sz) (sizeof(sz) / sizeof(sz[0]))
#define TUL_RDWORD(x,y) (short)(inl((int)((ULONG)((ULONG)x+(UCHAR)y)) ))
/* set by i91_setup according to the command line */
static int setup_called = 0;
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 char *setup_str = (char *) NULL;
static void i91u_intr0(int irq, void *dev_id, struct pt_regs *);
static void i91u_intr1(int irq, void *dev_id, struct pt_regs *);
static void i91u_intr2(int irq, void *dev_id, struct pt_regs *);
static void i91u_intr3(int irq, void *dev_id, struct pt_regs *);
static void i91u_intr4(int irq, void *dev_id, struct pt_regs *);
static void i91u_intr5(int irq, void *dev_id, struct pt_regs *);
static void i91u_intr6(int irq, void *dev_id, struct pt_regs *);
static void i91u_intr7(int irq, void *dev_id, struct pt_regs *);
static void i91u_panic(char *msg);
static void i91uSCBPost(BYTE * pHcb, BYTE * pScb);
/* ---- EXTERNAL FUNCTIONS ---- */
/* Get total number of adapters */
extern void init_i91uAdapter_table(void);
extern int Addi91u_into_Adapter_table(WORD, WORD, BYTE, BYTE, BYTE);
extern int tul_ReturnNumberOfAdapters(void);
extern void get_tulipPCIConfig(HCS * pHCB, int iChannel_index);
extern int init_tulip(HCS * pHCB, SCB * pSCB, int tul_num_scb, BYTE * pbBiosAdr, int reset_time);
extern SCB *tul_alloc_scb(HCS * pHCB);
extern int tul_abort_srb(HCS * pHCB, Scsi_Cmnd * pSRB);
extern void tul_exec_scb(HCS * pHCB, SCB * pSCB);
extern void tul_release_scb(HCS * pHCB, SCB * pSCB);
extern void tul_stop_bm(HCS * pHCB);
extern int tul_reset_scsi(HCS * pCurHcb, int seconds);
extern int tul_isr(HCS * pHCB);
extern int tul_reset(HCS * pHCB, Scsi_Cmnd * pSRB, unsigned char target);
extern int tul_reset_scsi_bus(HCS * pCurHcb);
extern int tul_device_reset(HCS * pCurHcb, ULONG pSrb, unsigned int target, unsigned int ResetFlags);
/* ---- EXTERNAL VARIABLES ---- */
extern HCS tul_hcs[];
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 },
};
/*
* queue services:
*/
/*****************************************************************************
Function name : i91uAppendSRBToQueue
Description : This function will push current request into save list
Input : pSRB - Pointer to SCSI request block.
pHCB - Pointer to host adapter structure
Output : None.
Return : None.
*****************************************************************************/
static void i91uAppendSRBToQueue(HCS * pHCB, Scsi_Cmnd * pSRB)
{
ULONG flags;
spin_lock_irqsave(&(pHCB->pSRB_lock), flags);
pSRB->next = NULL; /* Pointer to next */
if (pHCB->pSRB_head == NULL)
pHCB->pSRB_head = pSRB;
else
pHCB->pSRB_tail->next = pSRB; /* Pointer to next */
pHCB->pSRB_tail = pSRB;
spin_unlock_irqrestore(&(pHCB->pSRB_lock), flags);
return;
}
/*****************************************************************************
Function name : i91uPopSRBFromQueue
Description : This function will pop current request from save list
Input : pHCB - Pointer to host adapter structure
Output : None.
Return : pSRB - Pointer to SCSI request block.
*****************************************************************************/
static Scsi_Cmnd *i91uPopSRBFromQueue(HCS * pHCB)
{
Scsi_Cmnd *pSRB;
ULONG flags;
spin_lock_irqsave(&(pHCB->pSRB_lock), flags);
if ((pSRB = pHCB->pSRB_head) != NULL) {
pHCB->pSRB_head = pHCB->pSRB_head->next;
pSRB->next = NULL;
}
spin_unlock_irqrestore(&(pHCB->pSRB_lock), flags);
return (pSRB);
}
/* called from init/main.c */
void i91u_setup(char *str, int *ints)
{
if (setup_called)
i91u_panic("i91u: i91u_setup called twice.\n");
setup_called = ints[0];
setup_str = str;
#ifdef DEBUG_i91u
setup_debug = ints[0] >= 1 ? ints[1] : DEBUG_DEFAULT;
#endif
}
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 (Addi91u_into_Adapter_table(wBIOS,
(pDev->resource[0].start),
pDev->irq,
pDev->bus->number,
(pDev->devfn >> 3)
) == 0)
iAdapters++;
}
}
return (iAdapters);
}
int i91u_detect(Scsi_Host_Template * tpnt)
{
SCB *pSCB;
HCS *pHCB;
struct Scsi_Host *hreg;
unsigned long i; /* 01/14/98 */
int ok = 0, iAdapters;
ULONG dBiosAdr;
BYTE *pbBiosAdr;
tpnt->proc_name = "INI9100U";
if (setup_called) { /* Setup by i91u_setup */
printk("i91u: processing commandline: ");
#ifdef DEBUG_i91u
if (setup_called > 1) {
printk("\ni91u: %s\n", setup_str);
printk("i91u: usage: i91u[=<DEBUG>]\n");
i91u_panic("i91u panics in line %d", __LINE__);
}
i91u_debug = setup_debug;
#endif
}
/* Get total number of adapters in the motherboard */
#ifdef CONFIG_PCI
iAdapters = tul_NewReturnNumberOfAdapters();
#else
iAdapters = tul_ReturnNumberOfAdapters();
#endif
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);
pSCB = tul_scb;
for (i = 0; i < tul_num_ch * tul_num_scb; i++, pSCB++) {
pSCB->SCB_SGPAddr = (U32) VIRT_TO_BUS(&pSCB->SCB_SGList[0]);
}
for (i = 0, pHCB = &tul_hcs[0]; /* Get pointer for control block */
i < tul_num_ch;
i++, pHCB++) {
pHCB->pSRB_head = NULL; /* Initial SRB save queue */
pHCB->pSRB_tail = NULL; /* Initial SRB save queue */
pHCB->pSRB_lock = SPIN_LOCK_UNLOCKED; /* SRB save queue lock */
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 */
switch (i) {
case 0:
ok = request_irq(pHCB->HCS_Intr, i91u_intr0, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg);
break;
case 1:
ok = request_irq(pHCB->HCS_Intr, i91u_intr1, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg);
break;
case 2:
ok = request_irq(pHCB->HCS_Intr, i91u_intr2, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg);
break;
case 3:
ok = request_irq(pHCB->HCS_Intr, i91u_intr3, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg);
break;
case 4:
ok = request_irq(pHCB->HCS_Intr, i91u_intr4, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg);
break;
case 5:
ok = request_irq(pHCB->HCS_Intr, i91u_intr5, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg);
break;
case 6:
ok = request_irq(pHCB->HCS_Intr, i91u_intr6, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg);
break;
case 7:
ok = request_irq(pHCB->HCS_Intr, i91u_intr7, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg);
break;
default:
i91u_panic("i91u: Too many host adapters\n");
break;
}
if (ok < 0) {
if (ok == -EINVAL) {
printk("i91u: bad IRQ %d.\n", pHCB->HCS_Intr);
printk(" Contact author.\n");
} else if (ok == -EBUSY)
printk("i91u: IRQ %d already in use. Configure another.\n",
pHCB->HCS_Intr);
else {
printk("\ni91u: Unexpected error code on requesting IRQ %d.\n",
pHCB->HCS_Intr);
printk(" Contact author.\n");
}
i91u_panic("i91u: driver needs an IRQ.\n");
}
}
tpnt->this_id = -1;
tpnt->can_queue = 1;
return 1;
}
static void i91uBuildSCB(HCS * pHCB, SCB * pSCB, Scsi_Cmnd * SCpnt)
{ /* Create corresponding SCB */
struct scatterlist *pSrbSG;
SG *pSG; /* Pointer to SG list */
int i;
long TotalLen;
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 */
pSCB->SCB_SensePtr = (U32) VIRT_TO_BUS(SCpnt->sense_buffer);
pSCB->SCB_SenseLen = SENSE_SIZE;
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 */
}
if (SCpnt->use_sg) {
pSrbSG = (struct scatterlist *) SCpnt->request_buffer;
if (SCpnt->use_sg == 1) { /* If only one entry in the list *//* treat it as regular I/O */
pSCB->SCB_BufPtr = (U32) VIRT_TO_BUS(pSrbSG->address);
TotalLen = pSrbSG->length;
pSCB->SCB_SGLen = 0;
} else { /* Assign SG physical address */
pSCB->SCB_BufPtr = pSCB->SCB_SGPAddr;
pSCB->SCB_Flags |= SCF_SG; /* Turn on SG list flag */
for (i = 0, TotalLen = 0, pSG = &pSCB->SCB_SGList[0]; /* 1.01g */
i < SCpnt->use_sg;
i++, pSG++, pSrbSG++) {
pSG->SG_Ptr = (U32) VIRT_TO_BUS(pSrbSG->address);
TotalLen += pSG->SG_Len = pSrbSG->length;
}
pSCB->SCB_SGLen = i;
}
pSCB->SCB_BufLen = (SCpnt->request_bufflen > TotalLen) ?
TotalLen : SCpnt->request_bufflen;
} else { /* Non SG */
pSCB->SCB_BufPtr = (U32) VIRT_TO_BUS(SCpnt->request_buffer);
pSCB->SCB_BufLen = SCpnt->request_bufflen;
pSCB->SCB_SGLen = 0;
}
return;
}
/*
* Queue a command and setup interrupts for a free bus.
*/
int i91u_queue(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
{
register SCB *pSCB;
HCS *pHCB; /* Point to Host adapter control block */
if (SCpnt->device->lun > 16) { /* 07/22/98 */
SCpnt->result = (DID_TIME_OUT << 16);
done(SCpnt); /* Notify system DONE */
return (0);
}
pHCB = (HCS *) SCpnt->device->host->base;
SCpnt->scsi_done = done;
/* Get free SCSI control block */
if ((pSCB = tul_alloc_scb(pHCB)) == NULL) {
i91uAppendSRBToQueue(pHCB, SCpnt); /* Buffer this request */
return (0);
}
i91uBuildSCB(pHCB, pSCB, SCpnt);
tul_exec_scb(pHCB, pSCB); /* Start execute SCB */
return (0);
}
/*
* We only support command in interrupt-driven fashion
*/
int i91u_command(Scsi_Cmnd * SCpnt)
{
printk("i91u: interrupt driven driver; use i91u_queue()\n");
return -1;
}
/*
* Abort a queued command
* (commands that are on the bus can't be aborted easily)
*/
int i91u_abort(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
*/
int i91u_reset(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, (ULONG) SCpnt, SCpnt->device->id, reset_flags);
}
/*
* Return the "logical geometry"
*/
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;
}
/*****************************************************************************
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)
{
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");
}
pSRB->scsi_done(pSRB); /* Notify system DONE */
if ((pSRB = i91uPopSRBFromQueue(pHCB)) != NULL)
/* Find the next pending SRB */
{ /* Assume resend will success */
/* Reuse old SCB */
i91uBuildSCB(pHCB, pSCB, pSRB); /* Create corresponding SCB */
tul_exec_scb(pHCB, pSCB); /* Start execute SCB */
} else { /* No Pending SRB */
tul_release_scb(pHCB, pSCB); /* Release SCB for current channel */
}
return;
}
/*
* Interrupts handler (main routine of the driver)
*/
static void i91u_intr0(int irqno, void *dev_id, struct pt_regs *regs)
{
unsigned long flags;
struct Scsi_Host *dev = dev_id;
if (tul_hcs[0].HCS_Intr != irqno)
return;
spin_lock_irqsave(dev->host_lock, flags);
tul_isr(&tul_hcs[0]);
spin_unlock_irqrestore(dev->host_lock, flags);
}
static void i91u_intr1(int irqno, void *dev_id, struct pt_regs *regs)
{
unsigned long flags;
struct Scsi_Host *dev = dev_id;
if (tul_hcs[1].HCS_Intr != irqno)
return;
spin_lock_irqsave(dev->host_lock, flags);
tul_isr(&tul_hcs[1]);
spin_unlock_irqrestore(dev->host_lock, flags);
}
static void i91u_intr2(int irqno, void *dev_id, struct pt_regs *regs)
{
unsigned long flags;
struct Scsi_Host *dev = dev_id;
if (tul_hcs[2].HCS_Intr != irqno)
return;
spin_lock_irqsave(dev->host_lock, flags);
tul_isr(&tul_hcs[2]);
spin_unlock_irqrestore(dev->host_lock, flags);
}
static void i91u_intr3(int irqno, void *dev_id, struct pt_regs *regs)
{
unsigned long flags;
struct Scsi_Host *dev = dev_id;
if (tul_hcs[3].HCS_Intr != irqno)
return;
spin_lock_irqsave(dev->host_lock, flags);
tul_isr(&tul_hcs[3]);
spin_unlock_irqrestore(dev->host_lock, flags);
}
static void i91u_intr4(int irqno, void *dev_id, struct pt_regs *regs)
{
unsigned long flags;
struct Scsi_Host *dev = dev_id;
if (tul_hcs[4].HCS_Intr != irqno)
return;
spin_lock_irqsave(dev->host_lock, flags);
tul_isr(&tul_hcs[4]);
spin_unlock_irqrestore(dev->host_lock, flags);
}
static void i91u_intr5(int irqno, void *dev_id, struct pt_regs *regs)
{
unsigned long flags;
struct Scsi_Host *dev = dev_id;
if (tul_hcs[5].HCS_Intr != irqno)
return;
spin_lock_irqsave(dev->host_lock, flags);
tul_isr(&tul_hcs[5]);
spin_unlock_irqrestore(dev->host_lock, flags);
}
static void i91u_intr6(int irqno, void *dev_id, struct pt_regs *regs)
{
unsigned long flags;
struct Scsi_Host *dev = dev_id;
if (tul_hcs[6].HCS_Intr != irqno)
return;
spin_lock_irqsave(dev->host_lock, flags);
tul_isr(&tul_hcs[6]);
spin_unlock_irqrestore(dev->host_lock, flags);
}
static void i91u_intr7(int irqno, void *dev_id, struct pt_regs *regs)
{
unsigned long flags;
struct Scsi_Host *dev = dev_id;
if (tul_hcs[7].HCS_Intr != irqno)
return;
spin_lock_irqsave(dev->host_lock, flags);
tul_isr(&tul_hcs[7]);
spin_unlock_irqrestore(dev->host_lock, flags);
}
/*
* Dump the current driver status and panic...
*/
static void i91u_panic(char *msg)
{
printk("\ni91u_panic: %s\n", msg);
panic("i91u panic");
}
/*
* Release ressources
*/
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");