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kernel_optimize_test/drivers/scsi/qlogicpti.c
Boaz Harrosh c9eeb248f3 [SCSI] qlogicpti: fix sg list traversal error in continuation entries 
The current sg list traversal logic for the continuation entries
doesn't advance the list pointer once all seven slots are used, so the
next continuation entry (if there is one) wrongly begins again at the
start of the sg list.

Fix by advancing the sg pointer after the for_each_sg().

Reported-by: Meelis Roos <mroos@ut.ee>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-09-28 17:10:40 -05:00

1460 lines
40 KiB
C
Raw Blame History

/* qlogicpti.c: Performance Technologies QlogicISP sbus card driver.
*
* Copyright (C) 1996, 2006 David S. Miller (davem@davemloft.net)
*
* A lot of this driver was directly stolen from Erik H. Moe's PCI
* Qlogic ISP driver. Mucho kudos to him for this code.
*
* An even bigger kudos to John Grana at Performance Technologies
* for providing me with the hardware to write this driver, you rule
* John you really do.
*
* May, 2, 1997: Added support for QLGC,isp --jj
*/
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/proc_fs.h>
#include <linux/stat.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/jiffies.h>
#include <asm/byteorder.h>
#include "qlogicpti.h"
#include <asm/sbus.h>
#include <asm/dma.h>
#include <asm/system.h>
#include <asm/ptrace.h>
#include <asm/pgtable.h>
#include <asm/oplib.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_host.h>
#define MAX_TARGETS 16
#define MAX_LUNS 8 /* 32 for 1.31 F/W */
#define DEFAULT_LOOP_COUNT 10000
#include "qlogicpti_asm.c"
static struct qlogicpti *qptichain = NULL;
static DEFINE_SPINLOCK(qptichain_lock);
#define PACKB(a, b) (((a)<<4)|(b))
static const u_char mbox_param[] = {
PACKB(1, 1), /* MBOX_NO_OP */
PACKB(5, 5), /* MBOX_LOAD_RAM */
PACKB(2, 0), /* MBOX_EXEC_FIRMWARE */
PACKB(5, 5), /* MBOX_DUMP_RAM */
PACKB(3, 3), /* MBOX_WRITE_RAM_WORD */
PACKB(2, 3), /* MBOX_READ_RAM_WORD */
PACKB(6, 6), /* MBOX_MAILBOX_REG_TEST */
PACKB(2, 3), /* MBOX_VERIFY_CHECKSUM */
PACKB(1, 3), /* MBOX_ABOUT_FIRMWARE */
PACKB(0, 0), /* 0x0009 */
PACKB(0, 0), /* 0x000a */
PACKB(0, 0), /* 0x000b */
PACKB(0, 0), /* 0x000c */
PACKB(0, 0), /* 0x000d */
PACKB(1, 2), /* MBOX_CHECK_FIRMWARE */
PACKB(0, 0), /* 0x000f */
PACKB(5, 5), /* MBOX_INIT_REQ_QUEUE */
PACKB(6, 6), /* MBOX_INIT_RES_QUEUE */
PACKB(4, 4), /* MBOX_EXECUTE_IOCB */
PACKB(2, 2), /* MBOX_WAKE_UP */
PACKB(1, 6), /* MBOX_STOP_FIRMWARE */
PACKB(4, 4), /* MBOX_ABORT */
PACKB(2, 2), /* MBOX_ABORT_DEVICE */
PACKB(3, 3), /* MBOX_ABORT_TARGET */
PACKB(2, 2), /* MBOX_BUS_RESET */
PACKB(2, 3), /* MBOX_STOP_QUEUE */
PACKB(2, 3), /* MBOX_START_QUEUE */
PACKB(2, 3), /* MBOX_SINGLE_STEP_QUEUE */
PACKB(2, 3), /* MBOX_ABORT_QUEUE */
PACKB(2, 4), /* MBOX_GET_DEV_QUEUE_STATUS */
PACKB(0, 0), /* 0x001e */
PACKB(1, 3), /* MBOX_GET_FIRMWARE_STATUS */
PACKB(1, 2), /* MBOX_GET_INIT_SCSI_ID */
PACKB(1, 2), /* MBOX_GET_SELECT_TIMEOUT */
PACKB(1, 3), /* MBOX_GET_RETRY_COUNT */
PACKB(1, 2), /* MBOX_GET_TAG_AGE_LIMIT */
PACKB(1, 2), /* MBOX_GET_CLOCK_RATE */
PACKB(1, 2), /* MBOX_GET_ACT_NEG_STATE */
PACKB(1, 2), /* MBOX_GET_ASYNC_DATA_SETUP_TIME */
PACKB(1, 3), /* MBOX_GET_SBUS_PARAMS */
PACKB(2, 4), /* MBOX_GET_TARGET_PARAMS */
PACKB(2, 4), /* MBOX_GET_DEV_QUEUE_PARAMS */
PACKB(0, 0), /* 0x002a */
PACKB(0, 0), /* 0x002b */
PACKB(0, 0), /* 0x002c */
PACKB(0, 0), /* 0x002d */
PACKB(0, 0), /* 0x002e */
PACKB(0, 0), /* 0x002f */
PACKB(2, 2), /* MBOX_SET_INIT_SCSI_ID */
PACKB(2, 2), /* MBOX_SET_SELECT_TIMEOUT */
PACKB(3, 3), /* MBOX_SET_RETRY_COUNT */
PACKB(2, 2), /* MBOX_SET_TAG_AGE_LIMIT */
PACKB(2, 2), /* MBOX_SET_CLOCK_RATE */
PACKB(2, 2), /* MBOX_SET_ACTIVE_NEG_STATE */
PACKB(2, 2), /* MBOX_SET_ASYNC_DATA_SETUP_TIME */
PACKB(3, 3), /* MBOX_SET_SBUS_CONTROL_PARAMS */
PACKB(4, 4), /* MBOX_SET_TARGET_PARAMS */
PACKB(4, 4), /* MBOX_SET_DEV_QUEUE_PARAMS */
PACKB(0, 0), /* 0x003a */
PACKB(0, 0), /* 0x003b */
PACKB(0, 0), /* 0x003c */
PACKB(0, 0), /* 0x003d */
PACKB(0, 0), /* 0x003e */
PACKB(0, 0), /* 0x003f */
PACKB(0, 0), /* 0x0040 */
PACKB(0, 0), /* 0x0041 */
PACKB(0, 0) /* 0x0042 */
};
#define MAX_MBOX_COMMAND ARRAY_SIZE(mbox_param)
/* queue length's _must_ be power of two: */
#define QUEUE_DEPTH(in, out, ql) ((in - out) & (ql))
#define REQ_QUEUE_DEPTH(in, out) QUEUE_DEPTH(in, out, \
QLOGICPTI_REQ_QUEUE_LEN)
#define RES_QUEUE_DEPTH(in, out) QUEUE_DEPTH(in, out, RES_QUEUE_LEN)
static inline void qlogicpti_enable_irqs(struct qlogicpti *qpti)
{
sbus_writew(SBUS_CTRL_ERIRQ | SBUS_CTRL_GENAB,
qpti->qregs + SBUS_CTRL);
}
static inline void qlogicpti_disable_irqs(struct qlogicpti *qpti)
{
sbus_writew(0, qpti->qregs + SBUS_CTRL);
}
static inline void set_sbus_cfg1(struct qlogicpti *qpti)
{
u16 val;
u8 bursts = qpti->bursts;
#if 0 /* It appears that at least PTI cards do not support
* 64-byte bursts and that setting the B64 bit actually
* is a nop and the chip ends up using the smallest burst
* size. -DaveM
*/
if (sbus_can_burst64(qpti->sdev) && (bursts & DMA_BURST64)) {
val = (SBUS_CFG1_BENAB | SBUS_CFG1_B64);
} else
#endif
if (bursts & DMA_BURST32) {
val = (SBUS_CFG1_BENAB | SBUS_CFG1_B32);
} else if (bursts & DMA_BURST16) {
val = (SBUS_CFG1_BENAB | SBUS_CFG1_B16);
} else if (bursts & DMA_BURST8) {
val = (SBUS_CFG1_BENAB | SBUS_CFG1_B8);
} else {
val = 0; /* No sbus bursts for you... */
}
sbus_writew(val, qpti->qregs + SBUS_CFG1);
}
static int qlogicpti_mbox_command(struct qlogicpti *qpti, u_short param[], int force)
{
int loop_count;
u16 tmp;
if (mbox_param[param[0]] == 0)
return 1;
/* Set SBUS semaphore. */
tmp = sbus_readw(qpti->qregs + SBUS_SEMAPHORE);
tmp |= SBUS_SEMAPHORE_LCK;
sbus_writew(tmp, qpti->qregs + SBUS_SEMAPHORE);
/* Wait for host IRQ bit to clear. */
loop_count = DEFAULT_LOOP_COUNT;
while (--loop_count && (sbus_readw(qpti->qregs + HCCTRL) & HCCTRL_HIRQ)) {
barrier();
cpu_relax();
}
if (!loop_count)
printk(KERN_EMERG "qlogicpti%d: mbox_command loop timeout #1\n",
qpti->qpti_id);
/* Write mailbox command registers. */
switch (mbox_param[param[0]] >> 4) {
case 6: sbus_writew(param[5], qpti->qregs + MBOX5);
case 5: sbus_writew(param[4], qpti->qregs + MBOX4);
case 4: sbus_writew(param[3], qpti->qregs + MBOX3);
case 3: sbus_writew(param[2], qpti->qregs + MBOX2);
case 2: sbus_writew(param[1], qpti->qregs + MBOX1);
case 1: sbus_writew(param[0], qpti->qregs + MBOX0);
}
/* Clear RISC interrupt. */
tmp = sbus_readw(qpti->qregs + HCCTRL);
tmp |= HCCTRL_CRIRQ;
sbus_writew(tmp, qpti->qregs + HCCTRL);
/* Clear SBUS semaphore. */
sbus_writew(0, qpti->qregs + SBUS_SEMAPHORE);
/* Set HOST interrupt. */
tmp = sbus_readw(qpti->qregs + HCCTRL);
tmp |= HCCTRL_SHIRQ;
sbus_writew(tmp, qpti->qregs + HCCTRL);
/* Wait for HOST interrupt clears. */
loop_count = DEFAULT_LOOP_COUNT;
while (--loop_count &&
(sbus_readw(qpti->qregs + HCCTRL) & HCCTRL_CRIRQ))
udelay(20);
if (!loop_count)
printk(KERN_EMERG "qlogicpti%d: mbox_command[%04x] loop timeout #2\n",
qpti->qpti_id, param[0]);
/* Wait for SBUS semaphore to get set. */
loop_count = DEFAULT_LOOP_COUNT;
while (--loop_count &&
!(sbus_readw(qpti->qregs + SBUS_SEMAPHORE) & SBUS_SEMAPHORE_LCK)) {
udelay(20);
/* Workaround for some buggy chips. */
if (sbus_readw(qpti->qregs + MBOX0) & 0x4000)
break;
}
if (!loop_count)
printk(KERN_EMERG "qlogicpti%d: mbox_command[%04x] loop timeout #3\n",
qpti->qpti_id, param[0]);
/* Wait for MBOX busy condition to go away. */
loop_count = DEFAULT_LOOP_COUNT;
while (--loop_count && (sbus_readw(qpti->qregs + MBOX0) == 0x04))
udelay(20);
if (!loop_count)
printk(KERN_EMERG "qlogicpti%d: mbox_command[%04x] loop timeout #4\n",
qpti->qpti_id, param[0]);
/* Read back output parameters. */
switch (mbox_param[param[0]] & 0xf) {
case 6: param[5] = sbus_readw(qpti->qregs + MBOX5);
case 5: param[4] = sbus_readw(qpti->qregs + MBOX4);
case 4: param[3] = sbus_readw(qpti->qregs + MBOX3);
case 3: param[2] = sbus_readw(qpti->qregs + MBOX2);
case 2: param[1] = sbus_readw(qpti->qregs + MBOX1);
case 1: param[0] = sbus_readw(qpti->qregs + MBOX0);
}
/* Clear RISC interrupt. */
tmp = sbus_readw(qpti->qregs + HCCTRL);
tmp |= HCCTRL_CRIRQ;
sbus_writew(tmp, qpti->qregs + HCCTRL);
/* Release SBUS semaphore. */
tmp = sbus_readw(qpti->qregs + SBUS_SEMAPHORE);
tmp &= ~(SBUS_SEMAPHORE_LCK);
sbus_writew(tmp, qpti->qregs + SBUS_SEMAPHORE);
/* We're done. */
return 0;
}
static inline void qlogicpti_set_hostdev_defaults(struct qlogicpti *qpti)
{
int i;
qpti->host_param.initiator_scsi_id = qpti->scsi_id;
qpti->host_param.bus_reset_delay = 3;
qpti->host_param.retry_count = 0;
qpti->host_param.retry_delay = 5;
qpti->host_param.async_data_setup_time = 3;
qpti->host_param.req_ack_active_negation = 1;
qpti->host_param.data_line_active_negation = 1;
qpti->host_param.data_dma_burst_enable = 1;
qpti->host_param.command_dma_burst_enable = 1;
qpti->host_param.tag_aging = 8;
qpti->host_param.selection_timeout = 250;
qpti->host_param.max_queue_depth = 256;
for(i = 0; i < MAX_TARGETS; i++) {
/*
* disconnect, parity, arq, reneg on reset, and, oddly enough
* tags...the midlayer's notion of tagged support has to match
* our device settings, and since we base whether we enable a
* tag on a per-cmnd basis upon what the midlayer sez, we
* actually enable the capability here.
*/
qpti->dev_param[i].device_flags = 0xcd;
qpti->dev_param[i].execution_throttle = 16;
if (qpti->ultra) {
qpti->dev_param[i].synchronous_period = 12;
qpti->dev_param[i].synchronous_offset = 8;
} else {
qpti->dev_param[i].synchronous_period = 25;
qpti->dev_param[i].synchronous_offset = 12;
}
qpti->dev_param[i].device_enable = 1;
}
}
static int qlogicpti_reset_hardware(struct Scsi_Host *host)
{
struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
u_short param[6];
unsigned short risc_code_addr;
int loop_count, i;
unsigned long flags;
risc_code_addr = 0x1000; /* all load addresses are at 0x1000 */
spin_lock_irqsave(host->host_lock, flags);
sbus_writew(HCCTRL_PAUSE, qpti->qregs + HCCTRL);
/* Only reset the scsi bus if it is not free. */
if (sbus_readw(qpti->qregs + CPU_PCTRL) & CPU_PCTRL_BSY) {
sbus_writew(CPU_ORIDE_RMOD, qpti->qregs + CPU_ORIDE);
sbus_writew(CPU_CMD_BRESET, qpti->qregs + CPU_CMD);
udelay(400);
}
sbus_writew(SBUS_CTRL_RESET, qpti->qregs + SBUS_CTRL);
sbus_writew((DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ), qpti->qregs + CMD_DMA_CTRL);
sbus_writew((DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ), qpti->qregs + DATA_DMA_CTRL);
loop_count = DEFAULT_LOOP_COUNT;
while (--loop_count && ((sbus_readw(qpti->qregs + MBOX0) & 0xff) == 0x04))
udelay(20);
if (!loop_count)
printk(KERN_EMERG "qlogicpti%d: reset_hardware loop timeout\n",
qpti->qpti_id);
sbus_writew(HCCTRL_PAUSE, qpti->qregs + HCCTRL);
set_sbus_cfg1(qpti);
qlogicpti_enable_irqs(qpti);
if (sbus_readw(qpti->qregs + RISC_PSR) & RISC_PSR_ULTRA) {
qpti->ultra = 1;
sbus_writew((RISC_MTREG_P0ULTRA | RISC_MTREG_P1ULTRA),
qpti->qregs + RISC_MTREG);
} else {
qpti->ultra = 0;
sbus_writew((RISC_MTREG_P0DFLT | RISC_MTREG_P1DFLT),
qpti->qregs + RISC_MTREG);
}
/* reset adapter and per-device default values. */
/* do it after finding out whether we're ultra mode capable */
qlogicpti_set_hostdev_defaults(qpti);
/* Release the RISC processor. */
sbus_writew(HCCTRL_REL, qpti->qregs + HCCTRL);
/* Get RISC to start executing the firmware code. */
param[0] = MBOX_EXEC_FIRMWARE;
param[1] = risc_code_addr;
if (qlogicpti_mbox_command(qpti, param, 1)) {
printk(KERN_EMERG "qlogicpti%d: Cannot execute ISP firmware.\n",
qpti->qpti_id);
spin_unlock_irqrestore(host->host_lock, flags);
return 1;
}
/* Set initiator scsi ID. */
param[0] = MBOX_SET_INIT_SCSI_ID;
param[1] = qpti->host_param.initiator_scsi_id;
if (qlogicpti_mbox_command(qpti, param, 1) ||
(param[0] != MBOX_COMMAND_COMPLETE)) {
printk(KERN_EMERG "qlogicpti%d: Cannot set initiator SCSI ID.\n",
qpti->qpti_id);
spin_unlock_irqrestore(host->host_lock, flags);
return 1;
}
/* Initialize state of the queues, both hw and sw. */
qpti->req_in_ptr = qpti->res_out_ptr = 0;
param[0] = MBOX_INIT_RES_QUEUE;
param[1] = RES_QUEUE_LEN + 1;
param[2] = (u_short) (qpti->res_dvma >> 16);
param[3] = (u_short) (qpti->res_dvma & 0xffff);
param[4] = param[5] = 0;
if (qlogicpti_mbox_command(qpti, param, 1)) {
printk(KERN_EMERG "qlogicpti%d: Cannot init response queue.\n",
qpti->qpti_id);
spin_unlock_irqrestore(host->host_lock, flags);
return 1;
}
param[0] = MBOX_INIT_REQ_QUEUE;
param[1] = QLOGICPTI_REQ_QUEUE_LEN + 1;
param[2] = (u_short) (qpti->req_dvma >> 16);
param[3] = (u_short) (qpti->req_dvma & 0xffff);
param[4] = param[5] = 0;
if (qlogicpti_mbox_command(qpti, param, 1)) {
printk(KERN_EMERG "qlogicpti%d: Cannot init request queue.\n",
qpti->qpti_id);
spin_unlock_irqrestore(host->host_lock, flags);
return 1;
}
param[0] = MBOX_SET_RETRY_COUNT;
param[1] = qpti->host_param.retry_count;
param[2] = qpti->host_param.retry_delay;
qlogicpti_mbox_command(qpti, param, 0);
param[0] = MBOX_SET_TAG_AGE_LIMIT;
param[1] = qpti->host_param.tag_aging;
qlogicpti_mbox_command(qpti, param, 0);
for (i = 0; i < MAX_TARGETS; i++) {
param[0] = MBOX_GET_DEV_QUEUE_PARAMS;
param[1] = (i << 8);
qlogicpti_mbox_command(qpti, param, 0);
}
param[0] = MBOX_GET_FIRMWARE_STATUS;
qlogicpti_mbox_command(qpti, param, 0);
param[0] = MBOX_SET_SELECT_TIMEOUT;
param[1] = qpti->host_param.selection_timeout;
qlogicpti_mbox_command(qpti, param, 0);
for (i = 0; i < MAX_TARGETS; i++) {
param[0] = MBOX_SET_TARGET_PARAMS;
param[1] = (i << 8);
param[2] = (qpti->dev_param[i].device_flags << 8);
/*
* Since we're now loading 1.31 f/w, force narrow/async.
*/
param[2] |= 0xc0;
param[3] = 0; /* no offset, we do not have sync mode yet */
qlogicpti_mbox_command(qpti, param, 0);
}
/*
* Always (sigh) do an initial bus reset (kicks f/w).
*/
param[0] = MBOX_BUS_RESET;
param[1] = qpti->host_param.bus_reset_delay;
qlogicpti_mbox_command(qpti, param, 0);
qpti->send_marker = 1;
spin_unlock_irqrestore(host->host_lock, flags);
return 0;
}
#define PTI_RESET_LIMIT 400
static int __devinit qlogicpti_load_firmware(struct qlogicpti *qpti)
{
struct Scsi_Host *host = qpti->qhost;
unsigned short csum = 0;
unsigned short param[6];
unsigned short *risc_code, risc_code_addr, risc_code_length;
unsigned long flags;
int i, timeout;
risc_code = &sbus_risc_code01[0];
risc_code_addr = 0x1000; /* all f/w modules load at 0x1000 */
risc_code_length = sbus_risc_code_length01;
spin_lock_irqsave(host->host_lock, flags);
/* Verify the checksum twice, one before loading it, and once
* afterwards via the mailbox commands.
*/
for (i = 0; i < risc_code_length; i++)
csum += risc_code[i];
if (csum) {
spin_unlock_irqrestore(host->host_lock, flags);
printk(KERN_EMERG "qlogicpti%d: Aieee, firmware checksum failed!",
qpti->qpti_id);
return 1;
}
sbus_writew(SBUS_CTRL_RESET, qpti->qregs + SBUS_CTRL);
sbus_writew((DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ), qpti->qregs + CMD_DMA_CTRL);
sbus_writew((DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ), qpti->qregs + DATA_DMA_CTRL);
timeout = PTI_RESET_LIMIT;
while (--timeout && (sbus_readw(qpti->qregs + SBUS_CTRL) & SBUS_CTRL_RESET))
udelay(20);
if (!timeout) {
spin_unlock_irqrestore(host->host_lock, flags);
printk(KERN_EMERG "qlogicpti%d: Cannot reset the ISP.", qpti->qpti_id);
return 1;
}
sbus_writew(HCCTRL_RESET, qpti->qregs + HCCTRL);
mdelay(1);
sbus_writew((SBUS_CTRL_GENAB | SBUS_CTRL_ERIRQ), qpti->qregs + SBUS_CTRL);
set_sbus_cfg1(qpti);
sbus_writew(0, qpti->qregs + SBUS_SEMAPHORE);
if (sbus_readw(qpti->qregs + RISC_PSR) & RISC_PSR_ULTRA) {
qpti->ultra = 1;
sbus_writew((RISC_MTREG_P0ULTRA | RISC_MTREG_P1ULTRA),
qpti->qregs + RISC_MTREG);
} else {
qpti->ultra = 0;
sbus_writew((RISC_MTREG_P0DFLT | RISC_MTREG_P1DFLT),
qpti->qregs + RISC_MTREG);
}
sbus_writew(HCCTRL_REL, qpti->qregs + HCCTRL);
/* Pin lines are only stable while RISC is paused. */
sbus_writew(HCCTRL_PAUSE, qpti->qregs + HCCTRL);
if (sbus_readw(qpti->qregs + CPU_PDIFF) & CPU_PDIFF_MODE)
qpti->differential = 1;
else
qpti->differential = 0;
sbus_writew(HCCTRL_REL, qpti->qregs + HCCTRL);
/* This shouldn't be necessary- we've reset things so we should be
running from the ROM now.. */
param[0] = MBOX_STOP_FIRMWARE;
param[1] = param[2] = param[3] = param[4] = param[5] = 0;
if (qlogicpti_mbox_command(qpti, param, 1)) {
printk(KERN_EMERG "qlogicpti%d: Cannot stop firmware for reload.\n",
qpti->qpti_id);
spin_unlock_irqrestore(host->host_lock, flags);
return 1;
}
/* Load it up.. */
for (i = 0; i < risc_code_length; i++) {
param[0] = MBOX_WRITE_RAM_WORD;
param[1] = risc_code_addr + i;
param[2] = risc_code[i];
if (qlogicpti_mbox_command(qpti, param, 1) ||
param[0] != MBOX_COMMAND_COMPLETE) {
printk("qlogicpti%d: Firmware dload failed, I'm bolixed!\n",
qpti->qpti_id);
spin_unlock_irqrestore(host->host_lock, flags);
return 1;
}
}
/* Reset the ISP again. */
sbus_writew(HCCTRL_RESET, qpti->qregs + HCCTRL);
mdelay(1);
qlogicpti_enable_irqs(qpti);
sbus_writew(0, qpti->qregs + SBUS_SEMAPHORE);
sbus_writew(HCCTRL_REL, qpti->qregs + HCCTRL);
/* Ask ISP to verify the checksum of the new code. */
param[0] = MBOX_VERIFY_CHECKSUM;
param[1] = risc_code_addr;
if (qlogicpti_mbox_command(qpti, param, 1) ||
(param[0] != MBOX_COMMAND_COMPLETE)) {
printk(KERN_EMERG "qlogicpti%d: New firmware csum failure!\n",
qpti->qpti_id);
spin_unlock_irqrestore(host->host_lock, flags);
return 1;
}
/* Start using newly downloaded firmware. */
param[0] = MBOX_EXEC_FIRMWARE;
param[1] = risc_code_addr;
qlogicpti_mbox_command(qpti, param, 1);
param[0] = MBOX_ABOUT_FIRMWARE;
if (qlogicpti_mbox_command(qpti, param, 1) ||
(param[0] != MBOX_COMMAND_COMPLETE)) {
printk(KERN_EMERG "qlogicpti%d: AboutFirmware cmd fails.\n",
qpti->qpti_id);
spin_unlock_irqrestore(host->host_lock, flags);
return 1;
}
/* Snag the major and minor revisions from the result. */
qpti->fware_majrev = param[1];
qpti->fware_minrev = param[2];
qpti->fware_micrev = param[3];
/* Set the clock rate */
param[0] = MBOX_SET_CLOCK_RATE;
param[1] = qpti->clock;
if (qlogicpti_mbox_command(qpti, param, 1) ||
(param[0] != MBOX_COMMAND_COMPLETE)) {
printk(KERN_EMERG "qlogicpti%d: could not set clock rate.\n",
qpti->qpti_id);
spin_unlock_irqrestore(host->host_lock, flags);
return 1;
}
if (qpti->is_pti != 0) {
/* Load scsi initiator ID and interrupt level into sbus static ram. */
param[0] = MBOX_WRITE_RAM_WORD;
param[1] = 0xff80;
param[2] = (unsigned short) qpti->scsi_id;
qlogicpti_mbox_command(qpti, param, 1);
param[0] = MBOX_WRITE_RAM_WORD;
param[1] = 0xff00;
param[2] = (unsigned short) 3;
qlogicpti_mbox_command(qpti, param, 1);
}
spin_unlock_irqrestore(host->host_lock, flags);
return 0;
}
static int qlogicpti_verify_tmon(struct qlogicpti *qpti)
{
int curstat = sbus_readb(qpti->sreg);
curstat &= 0xf0;
if (!(curstat & SREG_FUSE) && (qpti->swsreg & SREG_FUSE))
printk("qlogicpti%d: Fuse returned to normal state.\n", qpti->qpti_id);
if (!(curstat & SREG_TPOWER) && (qpti->swsreg & SREG_TPOWER))
printk("qlogicpti%d: termpwr back to normal state.\n", qpti->qpti_id);
if (curstat != qpti->swsreg) {
int error = 0;
if (curstat & SREG_FUSE) {
error++;
printk("qlogicpti%d: Fuse is open!\n", qpti->qpti_id);
}
if (curstat & SREG_TPOWER) {
error++;
printk("qlogicpti%d: termpwr failure\n", qpti->qpti_id);
}
if (qpti->differential &&
(curstat & SREG_DSENSE) != SREG_DSENSE) {
error++;
printk("qlogicpti%d: You have a single ended device on a "
"differential bus! Please fix!\n", qpti->qpti_id);
}
qpti->swsreg = curstat;
return error;
}
return 0;
}
static irqreturn_t qpti_intr(int irq, void *dev_id);
static void __devinit qpti_chain_add(struct qlogicpti *qpti)
{
spin_lock_irq(&qptichain_lock);
if (qptichain != NULL) {
struct qlogicpti *qlink = qptichain;
while(qlink->next)
qlink = qlink->next;
qlink->next = qpti;
} else {
qptichain = qpti;
}
qpti->next = NULL;
spin_unlock_irq(&qptichain_lock);
}
static void __devexit qpti_chain_del(struct qlogicpti *qpti)
{
spin_lock_irq(&qptichain_lock);
if (qptichain == qpti) {
qptichain = qpti->next;
} else {
struct qlogicpti *qlink = qptichain;
while(qlink->next != qpti)
qlink = qlink->next;
qlink->next = qpti->next;
}
qpti->next = NULL;
spin_unlock_irq(&qptichain_lock);
}
static int __devinit qpti_map_regs(struct qlogicpti *qpti)
{
struct sbus_dev *sdev = qpti->sdev;
qpti->qregs = sbus_ioremap(&sdev->resource[0], 0,
sdev->reg_addrs[0].reg_size,
"PTI Qlogic/ISP");
if (!qpti->qregs) {
printk("PTI: Qlogic/ISP registers are unmappable\n");
return -1;
}
if (qpti->is_pti) {
qpti->sreg = sbus_ioremap(&sdev->resource[0], (16 * 4096),
sizeof(unsigned char),
"PTI Qlogic/ISP statreg");
if (!qpti->sreg) {
printk("PTI: Qlogic/ISP status register is unmappable\n");
return -1;
}
}
return 0;
}
static int __devinit qpti_register_irq(struct qlogicpti *qpti)
{
struct sbus_dev *sdev = qpti->sdev;
qpti->qhost->irq = qpti->irq = sdev->irqs[0];
/* We used to try various overly-clever things to
* reduce the interrupt processing overhead on
* sun4c/sun4m when multiple PTI's shared the
* same IRQ. It was too complex and messy to
* sanely maintain.
*/
if (request_irq(qpti->irq, qpti_intr,
IRQF_SHARED, "Qlogic/PTI", qpti))
goto fail;
printk("qlogicpti%d: IRQ %d ", qpti->qpti_id, qpti->irq);
return 0;
fail:
printk("qlogicpti%d: Cannot acquire irq line\n", qpti->qpti_id);
return -1;
}
static void __devinit qpti_get_scsi_id(struct qlogicpti *qpti)
{
qpti->scsi_id = prom_getintdefault(qpti->prom_node,
"initiator-id",
-1);
if (qpti->scsi_id == -1)
qpti->scsi_id = prom_getintdefault(qpti->prom_node,
"scsi-initiator-id",
-1);
if (qpti->scsi_id == -1)
qpti->scsi_id =
prom_getintdefault(qpti->sdev->bus->prom_node,
"scsi-initiator-id", 7);
qpti->qhost->this_id = qpti->scsi_id;
qpti->qhost->max_sectors = 64;
printk("SCSI ID %d ", qpti->scsi_id);
}
static void qpti_get_bursts(struct qlogicpti *qpti)
{
struct sbus_dev *sdev = qpti->sdev;
u8 bursts, bmask;
bursts = prom_getintdefault(qpti->prom_node, "burst-sizes", 0xff);
bmask = prom_getintdefault(sdev->bus->prom_node,
"burst-sizes", 0xff);
if (bmask != 0xff)
bursts &= bmask;
if (bursts == 0xff ||
(bursts & DMA_BURST16) == 0 ||
(bursts & DMA_BURST32) == 0)
bursts = (DMA_BURST32 - 1);
qpti->bursts = bursts;
}
static void qpti_get_clock(struct qlogicpti *qpti)
{
unsigned int cfreq;
/* Check for what the clock input to this card is.
* Default to 40Mhz.
*/
cfreq = prom_getintdefault(qpti->prom_node,"clock-frequency",40000000);
qpti->clock = (cfreq + 500000)/1000000;
if (qpti->clock == 0) /* bullshit */
qpti->clock = 40;
}
/* The request and response queues must each be aligned
* on a page boundary.
*/
static int __devinit qpti_map_queues(struct qlogicpti *qpti)
{
struct sbus_dev *sdev = qpti->sdev;
#define QSIZE(entries) (((entries) + 1) * QUEUE_ENTRY_LEN)
qpti->res_cpu = sbus_alloc_consistent(sdev,
QSIZE(RES_QUEUE_LEN),
&qpti->res_dvma);
if (qpti->res_cpu == NULL ||
qpti->res_dvma == 0) {
printk("QPTI: Cannot map response queue.\n");
return -1;
}
qpti->req_cpu = sbus_alloc_consistent(sdev,
QSIZE(QLOGICPTI_REQ_QUEUE_LEN),
&qpti->req_dvma);
if (qpti->req_cpu == NULL ||
qpti->req_dvma == 0) {
sbus_free_consistent(sdev, QSIZE(RES_QUEUE_LEN),
qpti->res_cpu, qpti->res_dvma);
printk("QPTI: Cannot map request queue.\n");
return -1;
}
memset(qpti->res_cpu, 0, QSIZE(RES_QUEUE_LEN));
memset(qpti->req_cpu, 0, QSIZE(QLOGICPTI_REQ_QUEUE_LEN));
return 0;
}
const char *qlogicpti_info(struct Scsi_Host *host)
{
static char buf[80];
struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
sprintf(buf, "PTI Qlogic,ISP SBUS SCSI irq %d regs at %p",
qpti->qhost->irq, qpti->qregs);
return buf;
}
/* I am a certified frobtronicist. */
static inline void marker_frob(struct Command_Entry *cmd)
{
struct Marker_Entry *marker = (struct Marker_Entry *) cmd;
memset(marker, 0, sizeof(struct Marker_Entry));
marker->hdr.entry_cnt = 1;
marker->hdr.entry_type = ENTRY_MARKER;
marker->modifier = SYNC_ALL;
marker->rsvd = 0;
}
static inline void cmd_frob(struct Command_Entry *cmd, struct scsi_cmnd *Cmnd,
struct qlogicpti *qpti)
{
memset(cmd, 0, sizeof(struct Command_Entry));
cmd->hdr.entry_cnt = 1;
cmd->hdr.entry_type = ENTRY_COMMAND;
cmd->target_id = Cmnd->device->id;
cmd->target_lun = Cmnd->device->lun;
cmd->cdb_length = Cmnd->cmd_len;
cmd->control_flags = 0;
if (Cmnd->device->tagged_supported) {
if (qpti->cmd_count[Cmnd->device->id] == 0)
qpti->tag_ages[Cmnd->device->id] = jiffies;
if (time_after(jiffies, qpti->tag_ages[Cmnd->device->id] + (5*HZ))) {
cmd->control_flags = CFLAG_ORDERED_TAG;
qpti->tag_ages[Cmnd->device->id] = jiffies;
} else
cmd->control_flags = CFLAG_SIMPLE_TAG;
}
if ((Cmnd->cmnd[0] == WRITE_6) ||
(Cmnd->cmnd[0] == WRITE_10) ||
(Cmnd->cmnd[0] == WRITE_12))
cmd->control_flags |= CFLAG_WRITE;
else
cmd->control_flags |= CFLAG_READ;
cmd->time_out = 30;
memcpy(cmd->cdb, Cmnd->cmnd, Cmnd->cmd_len);
}
/* Do it to it baby. */
static inline int load_cmd(struct scsi_cmnd *Cmnd, struct Command_Entry *cmd,
struct qlogicpti *qpti, u_int in_ptr, u_int out_ptr)
{
struct dataseg *ds;
struct scatterlist *sg, *s;
int i, n;
if (scsi_bufflen(Cmnd)) {
int sg_count;
sg = scsi_sglist(Cmnd);
sg_count = sbus_map_sg(qpti->sdev, sg, scsi_sg_count(Cmnd),
Cmnd->sc_data_direction);
ds = cmd->dataseg;
cmd->segment_cnt = sg_count;
/* Fill in first four sg entries: */
n = sg_count;
if (n > 4)
n = 4;
for_each_sg(sg, s, n, i) {
ds[i].d_base = sg_dma_address(s);
ds[i].d_count = sg_dma_len(s);
}
sg_count -= 4;
sg = s;
while (sg_count > 0) {
struct Continuation_Entry *cont;
++cmd->hdr.entry_cnt;
cont = (struct Continuation_Entry *) &qpti->req_cpu[in_ptr];
in_ptr = NEXT_REQ_PTR(in_ptr);
if (in_ptr == out_ptr)
return -1;
cont->hdr.entry_type = ENTRY_CONTINUATION;
cont->hdr.entry_cnt = 0;
cont->hdr.sys_def_1 = 0;
cont->hdr.flags = 0;
cont->reserved = 0;
ds = cont->dataseg;
n = sg_count;
if (n > 7)
n = 7;
for_each_sg(sg, s, n, i) {
ds[i].d_base = sg_dma_address(s);
ds[i].d_count = sg_dma_len(s);
}
sg_count -= n;
sg = s;
}
} else {
cmd->dataseg[0].d_base = 0;
cmd->dataseg[0].d_count = 0;
cmd->segment_cnt = 1; /* Shouldn't this be 0? */
}
/* Committed, record Scsi_Cmd so we can find it later. */
cmd->handle = in_ptr;
qpti->cmd_slots[in_ptr] = Cmnd;
qpti->cmd_count[Cmnd->device->id]++;
sbus_writew(in_ptr, qpti->qregs + MBOX4);
qpti->req_in_ptr = in_ptr;
return in_ptr;
}
static inline void update_can_queue(struct Scsi_Host *host, u_int in_ptr, u_int out_ptr)
{
/* Temporary workaround until bug is found and fixed (one bug has been found
already, but fixing it makes things even worse) -jj */
int num_free = QLOGICPTI_REQ_QUEUE_LEN - REQ_QUEUE_DEPTH(in_ptr, out_ptr) - 64;
host->can_queue = host->host_busy + num_free;
host->sg_tablesize = QLOGICPTI_MAX_SG(num_free);
}
static int qlogicpti_slave_configure(struct scsi_device *sdev)
{
struct qlogicpti *qpti = shost_priv(sdev->host);
int tgt = sdev->id;
u_short param[6];
/* tags handled in midlayer */
/* enable sync mode? */
if (sdev->sdtr) {
qpti->dev_param[tgt].device_flags |= 0x10;
} else {
qpti->dev_param[tgt].synchronous_offset = 0;
qpti->dev_param[tgt].synchronous_period = 0;
}
/* are we wide capable? */
if (sdev->wdtr)
qpti->dev_param[tgt].device_flags |= 0x20;
param[0] = MBOX_SET_TARGET_PARAMS;
param[1] = (tgt << 8);
param[2] = (qpti->dev_param[tgt].device_flags << 8);
if (qpti->dev_param[tgt].device_flags & 0x10) {
param[3] = (qpti->dev_param[tgt].synchronous_offset << 8) |
qpti->dev_param[tgt].synchronous_period;
} else {
param[3] = 0;
}
qlogicpti_mbox_command(qpti, param, 0);
return 0;
}
/*
* The middle SCSI layer ensures that queuecommand never gets invoked
* concurrently with itself or the interrupt handler (though the
* interrupt handler may call this routine as part of
* request-completion handling).
*
* "This code must fly." -davem
*/
static int qlogicpti_queuecommand(struct scsi_cmnd *Cmnd, void (*done)(struct scsi_cmnd *))
{
struct Scsi_Host *host = Cmnd->device->host;
struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
struct Command_Entry *cmd;
u_int out_ptr;
int in_ptr;
Cmnd->scsi_done = done;
in_ptr = qpti->req_in_ptr;
cmd = (struct Command_Entry *) &qpti->req_cpu[in_ptr];
out_ptr = sbus_readw(qpti->qregs + MBOX4);
in_ptr = NEXT_REQ_PTR(in_ptr);
if (in_ptr == out_ptr)
goto toss_command;
if (qpti->send_marker) {
marker_frob(cmd);
qpti->send_marker = 0;
if (NEXT_REQ_PTR(in_ptr) == out_ptr) {
sbus_writew(in_ptr, qpti->qregs + MBOX4);
qpti->req_in_ptr = in_ptr;
goto toss_command;
}
cmd = (struct Command_Entry *) &qpti->req_cpu[in_ptr];
in_ptr = NEXT_REQ_PTR(in_ptr);
}
cmd_frob(cmd, Cmnd, qpti);
if ((in_ptr = load_cmd(Cmnd, cmd, qpti, in_ptr, out_ptr)) == -1)
goto toss_command;
update_can_queue(host, in_ptr, out_ptr);
return 0;
toss_command:
printk(KERN_EMERG "qlogicpti%d: request queue overflow\n",
qpti->qpti_id);
/* Unfortunately, unless you use the new EH code, which
* we don't, the midlayer will ignore the return value,
* which is insane. We pick up the pieces like this.
*/
Cmnd->result = DID_BUS_BUSY;
done(Cmnd);
return 1;
}
static int qlogicpti_return_status(struct Status_Entry *sts, int id)
{
int host_status = DID_ERROR;
switch (sts->completion_status) {
case CS_COMPLETE:
host_status = DID_OK;
break;
case CS_INCOMPLETE:
if (!(sts->state_flags & SF_GOT_BUS))
host_status = DID_NO_CONNECT;
else if (!(sts->state_flags & SF_GOT_TARGET))
host_status = DID_BAD_TARGET;
else if (!(sts->state_flags & SF_SENT_CDB))
host_status = DID_ERROR;
else if (!(sts->state_flags & SF_TRANSFERRED_DATA))
host_status = DID_ERROR;
else if (!(sts->state_flags & SF_GOT_STATUS))
host_status = DID_ERROR;
else if (!(sts->state_flags & SF_GOT_SENSE))
host_status = DID_ERROR;
break;
case CS_DMA_ERROR:
case CS_TRANSPORT_ERROR:
host_status = DID_ERROR;
break;
case CS_RESET_OCCURRED:
case CS_BUS_RESET:
host_status = DID_RESET;
break;
case CS_ABORTED:
host_status = DID_ABORT;
break;
case CS_TIMEOUT:
host_status = DID_TIME_OUT;
break;
case CS_DATA_OVERRUN:
case CS_COMMAND_OVERRUN:
case CS_STATUS_OVERRUN:
case CS_BAD_MESSAGE:
case CS_NO_MESSAGE_OUT:
case CS_EXT_ID_FAILED:
case CS_IDE_MSG_FAILED:
case CS_ABORT_MSG_FAILED:
case CS_NOP_MSG_FAILED:
case CS_PARITY_ERROR_MSG_FAILED:
case CS_DEVICE_RESET_MSG_FAILED:
case CS_ID_MSG_FAILED:
case CS_UNEXP_BUS_FREE:
host_status = DID_ERROR;
break;
case CS_DATA_UNDERRUN:
host_status = DID_OK;
break;
default:
printk(KERN_EMERG "qlogicpti%d: unknown completion status 0x%04x\n",
id, sts->completion_status);
host_status = DID_ERROR;
break;
}
return (sts->scsi_status & STATUS_MASK) | (host_status << 16);
}
static struct scsi_cmnd *qlogicpti_intr_handler(struct qlogicpti *qpti)
{
struct scsi_cmnd *Cmnd, *done_queue = NULL;
struct Status_Entry *sts;
u_int in_ptr, out_ptr;
if (!(sbus_readw(qpti->qregs + SBUS_STAT) & SBUS_STAT_RINT))
return NULL;
in_ptr = sbus_readw(qpti->qregs + MBOX5);
sbus_writew(HCCTRL_CRIRQ, qpti->qregs + HCCTRL);
if (sbus_readw(qpti->qregs + SBUS_SEMAPHORE) & SBUS_SEMAPHORE_LCK) {
switch (sbus_readw(qpti->qregs + MBOX0)) {
case ASYNC_SCSI_BUS_RESET:
case EXECUTION_TIMEOUT_RESET:
qpti->send_marker = 1;
break;
case INVALID_COMMAND:
case HOST_INTERFACE_ERROR:
case COMMAND_ERROR:
case COMMAND_PARAM_ERROR:
break;
};
sbus_writew(0, qpti->qregs + SBUS_SEMAPHORE);
}
/* This looks like a network driver! */
out_ptr = qpti->res_out_ptr;
while (out_ptr != in_ptr) {
u_int cmd_slot;
sts = (struct Status_Entry *) &qpti->res_cpu[out_ptr];
out_ptr = NEXT_RES_PTR(out_ptr);
/* We store an index in the handle, not the pointer in
* some form. This avoids problems due to the fact
* that the handle provided is only 32-bits. -DaveM
*/
cmd_slot = sts->handle;
Cmnd = qpti->cmd_slots[cmd_slot];
qpti->cmd_slots[cmd_slot] = NULL;
if (sts->completion_status == CS_RESET_OCCURRED ||
sts->completion_status == CS_ABORTED ||
(sts->status_flags & STF_BUS_RESET))
qpti->send_marker = 1;
if (sts->state_flags & SF_GOT_SENSE)
memcpy(Cmnd->sense_buffer, sts->req_sense_data,
SCSI_SENSE_BUFFERSIZE);
if (sts->hdr.entry_type == ENTRY_STATUS)
Cmnd->result =
qlogicpti_return_status(sts, qpti->qpti_id);
else
Cmnd->result = DID_ERROR << 16;
if (scsi_bufflen(Cmnd))
sbus_unmap_sg(qpti->sdev,
scsi_sglist(Cmnd), scsi_sg_count(Cmnd),
Cmnd->sc_data_direction);
qpti->cmd_count[Cmnd->device->id]--;
sbus_writew(out_ptr, qpti->qregs + MBOX5);
Cmnd->host_scribble = (unsigned char *) done_queue;
done_queue = Cmnd;
}
qpti->res_out_ptr = out_ptr;
return done_queue;
}
static irqreturn_t qpti_intr(int irq, void *dev_id)
{
struct qlogicpti *qpti = dev_id;
unsigned long flags;
struct scsi_cmnd *dq;
spin_lock_irqsave(qpti->qhost->host_lock, flags);
dq = qlogicpti_intr_handler(qpti);
if (dq != NULL) {
do {
struct scsi_cmnd *next;
next = (struct scsi_cmnd *) dq->host_scribble;
dq->scsi_done(dq);
dq = next;
} while (dq != NULL);
}
spin_unlock_irqrestore(qpti->qhost->host_lock, flags);
return IRQ_HANDLED;
}
static int qlogicpti_abort(struct scsi_cmnd *Cmnd)
{
u_short param[6];
struct Scsi_Host *host = Cmnd->device->host;
struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
int return_status = SUCCESS;
u32 cmd_cookie;
int i;
printk(KERN_WARNING "qlogicpti%d: Aborting cmd for tgt[%d] lun[%d]\n",
qpti->qpti_id, (int)Cmnd->device->id, (int)Cmnd->device->lun);
qlogicpti_disable_irqs(qpti);
/* Find the 32-bit cookie we gave to the firmware for
* this command.
*/
for (i = 0; i < QLOGICPTI_REQ_QUEUE_LEN + 1; i++)
if (qpti->cmd_slots[i] == Cmnd)
break;
cmd_cookie = i;
param[0] = MBOX_ABORT;
param[1] = (((u_short) Cmnd->device->id) << 8) | Cmnd->device->lun;
param[2] = cmd_cookie >> 16;
param[3] = cmd_cookie & 0xffff;
if (qlogicpti_mbox_command(qpti, param, 0) ||
(param[0] != MBOX_COMMAND_COMPLETE)) {
printk(KERN_EMERG "qlogicpti%d: scsi abort failure: %x\n",
qpti->qpti_id, param[0]);
return_status = FAILED;
}
qlogicpti_enable_irqs(qpti);
return return_status;
}
static int qlogicpti_reset(struct scsi_cmnd *Cmnd)
{
u_short param[6];
struct Scsi_Host *host = Cmnd->device->host;
struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
int return_status = SUCCESS;
printk(KERN_WARNING "qlogicpti%d: Resetting SCSI bus!\n",
qpti->qpti_id);
qlogicpti_disable_irqs(qpti);
param[0] = MBOX_BUS_RESET;
param[1] = qpti->host_param.bus_reset_delay;
if (qlogicpti_mbox_command(qpti, param, 0) ||
(param[0] != MBOX_COMMAND_COMPLETE)) {
printk(KERN_EMERG "qlogicisp%d: scsi bus reset failure: %x\n",
qpti->qpti_id, param[0]);
return_status = FAILED;
}
qlogicpti_enable_irqs(qpti);
return return_status;
}
static struct scsi_host_template qpti_template = {
.module = THIS_MODULE,
.name = "qlogicpti",
.info = qlogicpti_info,
.queuecommand = qlogicpti_queuecommand,
.slave_configure = qlogicpti_slave_configure,
.eh_abort_handler = qlogicpti_abort,
.eh_bus_reset_handler = qlogicpti_reset,
.can_queue = QLOGICPTI_REQ_QUEUE_LEN,
.this_id = 7,
.sg_tablesize = QLOGICPTI_MAX_SG(QLOGICPTI_REQ_QUEUE_LEN),
.cmd_per_lun = 1,
.use_clustering = ENABLE_CLUSTERING,
};
static int __devinit qpti_sbus_probe(struct of_device *dev, const struct of_device_id *match)
{
static int nqptis;
struct sbus_dev *sdev = to_sbus_device(&dev->dev);
struct device_node *dp = dev->node;
struct scsi_host_template *tpnt = match->data;
struct Scsi_Host *host;
struct qlogicpti *qpti;
const char *fcode;
/* Sometimes Antares cards come up not completely
* setup, and we get a report of a zero IRQ.
*/
if (sdev->irqs[0] == 0)
return -ENODEV;
host = scsi_host_alloc(tpnt, sizeof(struct qlogicpti));
if (!host)
return -ENOMEM;
qpti = (struct qlogicpti *) host->hostdata;
host->max_id = MAX_TARGETS;
qpti->qhost = host;
qpti->sdev = sdev;
qpti->qpti_id = nqptis;
qpti->prom_node = sdev->prom_node;
strcpy(qpti->prom_name, sdev->ofdev.node->name);
qpti->is_pti = strcmp(qpti->prom_name, "QLGC,isp");
if (qpti_map_regs(qpti) < 0)
goto fail_unlink;
if (qpti_register_irq(qpti) < 0)
goto fail_unmap_regs;
qpti_get_scsi_id(qpti);
qpti_get_bursts(qpti);
qpti_get_clock(qpti);
/* Clear out scsi_cmnd array. */
memset(qpti->cmd_slots, 0, sizeof(qpti->cmd_slots));
if (qpti_map_queues(qpti) < 0)
goto fail_free_irq;
/* Load the firmware. */
if (qlogicpti_load_firmware(qpti))
goto fail_unmap_queues;
if (qpti->is_pti) {
/* Check the PTI status reg. */
if (qlogicpti_verify_tmon(qpti))
goto fail_unmap_queues;
}
/* Reset the ISP and init res/req queues. */
if (qlogicpti_reset_hardware(host))
goto fail_unmap_queues;
printk("(Firmware v%d.%d.%d)", qpti->fware_majrev,
qpti->fware_minrev, qpti->fware_micrev);
fcode = of_get_property(dp, "isp-fcode", NULL);
if (fcode && fcode[0])
printk("(FCode %s)", fcode);
if (of_find_property(dp, "differential", NULL) != NULL)
qpti->differential = 1;
printk("\nqlogicpti%d: [%s Wide, using %s interface]\n",
qpti->qpti_id,
(qpti->ultra ? "Ultra" : "Fast"),
(qpti->differential ? "differential" : "single ended"));
if (scsi_add_host(host, &dev->dev)) {
printk("qlogicpti%d: Failed scsi_add_host\n", qpti->qpti_id);
goto fail_unmap_queues;
}
dev_set_drvdata(&sdev->ofdev.dev, qpti);
qpti_chain_add(qpti);
scsi_scan_host(host);
nqptis++;
return 0;
fail_unmap_queues:
#define QSIZE(entries) (((entries) + 1) * QUEUE_ENTRY_LEN)
sbus_free_consistent(qpti->sdev,
QSIZE(RES_QUEUE_LEN),
qpti->res_cpu, qpti->res_dvma);
sbus_free_consistent(qpti->sdev,
QSIZE(QLOGICPTI_REQ_QUEUE_LEN),
qpti->req_cpu, qpti->req_dvma);
#undef QSIZE
fail_unmap_regs:
sbus_iounmap(qpti->qregs,
qpti->sdev->reg_addrs[0].reg_size);
if (qpti->is_pti)
sbus_iounmap(qpti->sreg, sizeof(unsigned char));
fail_free_irq:
free_irq(qpti->irq, qpti);
fail_unlink:
scsi_host_put(host);
return -ENODEV;
}
static int __devexit qpti_sbus_remove(struct of_device *dev)
{
struct qlogicpti *qpti = dev_get_drvdata(&dev->dev);
qpti_chain_del(qpti);
scsi_remove_host(qpti->qhost);
/* Shut up the card. */
sbus_writew(0, qpti->qregs + SBUS_CTRL);
/* Free IRQ handler and unmap Qlogic,ISP and PTI status regs. */
free_irq(qpti->irq, qpti);
#define QSIZE(entries) (((entries) + 1) * QUEUE_ENTRY_LEN)
sbus_free_consistent(qpti->sdev,
QSIZE(RES_QUEUE_LEN),
qpti->res_cpu, qpti->res_dvma);
sbus_free_consistent(qpti->sdev,
QSIZE(QLOGICPTI_REQ_QUEUE_LEN),
qpti->req_cpu, qpti->req_dvma);
#undef QSIZE
sbus_iounmap(qpti->qregs, qpti->sdev->reg_addrs[0].reg_size);
if (qpti->is_pti)
sbus_iounmap(qpti->sreg, sizeof(unsigned char));
scsi_host_put(qpti->qhost);
return 0;
}
static struct of_device_id qpti_match[] = {
{
.name = "ptisp",
.data = &qpti_template,
},
{
.name = "PTI,ptisp",
.data = &qpti_template,
},
{
.name = "QLGC,isp",
.data = &qpti_template,
},
{
.name = "SUNW,isp",
.data = &qpti_template,
},
{},
};
MODULE_DEVICE_TABLE(of, qpti_match);
static struct of_platform_driver qpti_sbus_driver = {
.name = "qpti",
.match_table = qpti_match,
.probe = qpti_sbus_probe,
.remove = __devexit_p(qpti_sbus_remove),
};
static int __init qpti_init(void)
{
return of_register_driver(&qpti_sbus_driver, &sbus_bus_type);
}
static void __exit qpti_exit(void)
{
of_unregister_driver(&qpti_sbus_driver);
}
MODULE_DESCRIPTION("QlogicISP SBUS driver");
MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
MODULE_LICENSE("GPL");
MODULE_VERSION("2.0");
module_init(qpti_init);
module_exit(qpti_exit);
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