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1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 | /* qlogicpti.c: Performance Technologies QlogicISP sbus card driver.
*
* Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu)
*
* 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/malloc.h>
#include <linux/blk.h>
#include <linux/proc_fs.h>
#include <linux/stat.h>
#include <linux/init.h>
#include <asm/byteorder.h>
#include "scsi.h"
#include "hosts.h"
#include "qlogicpti.h"
#include <asm/sbus.h>
#include <asm/dma.h>
#include <asm/system.h>
#include <asm/spinlock.h>
#include <asm/machines.h>
#include <asm/ptrace.h>
#include <asm/pgtable.h>
#include <asm/oplib.h>
#include <asm/vaddrs.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <linux/module.h>
#define MAX_TARGETS 16
#define MAX_LUNS 8
#define DEFAULT_LOOP_COUNT 1000000
#include "qlogicpti_asm.c"
static struct qlogicpti *qptichain;
static int qptis_running = 0;
#define PACKB(a, b) (((a)<<4)|(b))
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 (sizeof(mbox_param)/sizeof(u_short))
/* 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, \
QLOGICISP_REQ_QUEUE_LEN)
#define RES_QUEUE_DEPTH(in, out) QUEUE_DEPTH(in, out, RES_QUEUE_LEN)
static struct proc_dir_entry proc_scsi_qlogicpti = {
PROC_SCSI_QLOGICPTI, 7, "qlogicpti",
S_IFDIR | S_IRUGO | S_IXUGO, 2
};
static inline void qlogicpti_enable_irqs(struct qlogicpti_regs *qregs)
{
qregs->sbus_ctrl = SBUS_CTRL_ERIRQ | SBUS_CTRL_GENAB;
}
static inline void qlogicpti_disable_irqs(struct qlogicpti_regs *qregs)
{
qregs->sbus_ctrl = 0;
}
static inline void set_sbus_cfg1(struct qlogicpti_regs *qregs, unsigned char bursts)
{
if(bursts & DMA_BURST32) {
qregs->sbus_cfg1 = (SBUS_CFG1_BENAB | SBUS_CFG1_B32);
} else if(bursts & DMA_BURST16) {
qregs->sbus_cfg1 = (SBUS_CFG1_BENAB | SBUS_CFG1_B16);
} else if(bursts & DMA_BURST8) {
qregs->sbus_cfg1 = (SBUS_CFG1_BENAB | SBUS_CFG1_B8);
} else {
qregs->sbus_cfg1 = 0; /* No sbus bursts for you... */
}
}
static int qlogicpti_mbox_command(struct qlogicpti *qpti, u_short param[], int force)
{
struct qlogicpti_regs *qregs = qpti->qregs;
int loop_count;
if(mbox_param[param[0]] == 0)
return 1;
loop_count = DEFAULT_LOOP_COUNT;
while(--loop_count && (qregs->hcctrl & HCCTRL_HIRQ))
barrier();
if(!loop_count)
printk(KERN_EMERG "qlogicpti: mbox_command loop timeout #1\n");
switch(mbox_param[param[0]] >> 4) {
case 6: qregs->mbox5 = param[5];
case 5: qregs->mbox4 = param[4];
case 4: qregs->mbox3 = param[3];
case 3: qregs->mbox2 = param[2];
case 2: qregs->mbox1 = param[1];
case 1: qregs->mbox0 = param[0];
}
qregs->hcctrl |= HCCTRL_SHIRQ;
loop_count = DEFAULT_LOOP_COUNT;
while(--loop_count && !(qregs->sbus_semaphore & SBUS_SEMAPHORE_LCK))
udelay(20);
if(!loop_count)
printk(KERN_EMERG "qlogicpti: mbox_command loop timeout #2\n");
loop_count = DEFAULT_LOOP_COUNT;
while(--loop_count && (qregs->mbox0 == 0x04))
udelay(20);
if(!loop_count)
printk(KERN_EMERG "qlogicpti: mbox_command loop timeout #3\n");
if(force) {
qregs->hcctrl = HCCTRL_CRIRQ;
} else {
if((qregs->mbox5 - qpti->res_out_ptr) == 0)
qregs->hcctrl = HCCTRL_CRIRQ;
}
switch(mbox_param[param[0]] & 0xf) {
case 6: param[5] = qregs->mbox5;
case 5: param[4] = qregs->mbox4;
case 4: param[3] = qregs->mbox3;
case 3: param[2] = qregs->mbox2;
case 2: param[1] = qregs->mbox1;
case 1: param[0] = qregs->mbox0;
}
qregs->sbus_semaphore &= ~(SBUS_SEMAPHORE_LCK);
return 0;
}
static int qlogicpti_reset_hardware(struct Scsi_Host *host)
{
struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
struct qlogicpti_regs *qregs = qpti->qregs;
u_short param[6];
unsigned short risc_code_addr;
int loop_count, i;
unsigned long flags;
if(qpti->is_pti != 0)
risc_code_addr = pti_risc_code_addr01;
else
risc_code_addr = sbus_risc_code_addr01;
save_flags(flags); cli();
qregs->hcctrl = HCCTRL_PAUSE;
/* Only reset the scsi bus if it is not free. */
if(qregs->cpu_pctrl & CPU_PCTRL_BSY) {
qregs->cpu_oride = CPU_ORIDE_RMOD;
qregs->cpu_cmd = CPU_CMD_BRESET;
udelay(400);
}
qregs->sbus_ctrl = SBUS_CTRL_RESET;
qregs->cmd_dma_ctrl = (DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ);
qregs->data_dma_ctrl = (DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ);
loop_count = DEFAULT_LOOP_COUNT;
while(--loop_count && ((qregs->mbox0 & 0xff) == 0x04))
udelay(20);
if(!loop_count)
printk(KERN_EMERG "qlogicpti: reset_hardware loop timeout\n");
qregs->hcctrl = HCCTRL_PAUSE;
set_sbus_cfg1(qregs, qpti->bursts);
qlogicpti_enable_irqs(qregs);
if(qregs->risc_psr & RISC_PSR_ULTRA) {
qpti->ultra = 1;
qregs->risc_mtreg = (RISC_MTREG_P0ULTRA | RISC_MTREG_P1ULTRA);
} else {
qpti->ultra = 0;
qregs->risc_mtreg = (RISC_MTREG_P0DFLT | RISC_MTREG_P1DFLT);
}
/* Release the RISC processor. */
qregs->hcctrl = HCCTRL_REL;
/* 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);
restore_flags(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);
restore_flags(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);
restore_flags(flags);
return 1;
}
param[0] = MBOX_INIT_REQ_QUEUE;
param[1] = QLOGICISP_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);
restore_flags(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);
param[3] = (qpti->dev_param[i].synchronous_offset << 8) |
qpti->dev_param[i].synchronous_period;
qlogicpti_mbox_command(qpti, param, 0);
}
restore_flags(flags);
return 0;
}
#define PTI_RESET_LIMIT 400
__initfunc(static int qlogicpti_load_firmware(struct qlogicpti *qpti))
{
struct qlogicpti_regs *qregs = qpti->qregs;
unsigned short csum = 0;
unsigned short param[6];
unsigned short *risc_code, risc_code_addr, risc_code_length;
unsigned long flags;
#if !defined(MODULE) && !defined(__sparc_v9__)
unsigned long dvma_addr;
#endif
int i, timeout;
if(qpti->is_pti != 0) {
risc_code = &pti_risc_code01[0];
risc_code_addr = pti_risc_code_addr01;
risc_code_length = pti_risc_code_length01;
} else {
risc_code = &sbus_risc_code01[0];
risc_code_addr = sbus_risc_code_addr01;
risc_code_length = sbus_risc_code_length01;
}
save_flags(flags); cli();
/* 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) {
printk(KERN_EMERG "qlogicpti%d: Aieee, firmware checksum failed!",
qpti->qpti_id);
return 1;
}
qregs->sbus_ctrl = SBUS_CTRL_RESET;
qregs->cmd_dma_ctrl = (DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ);
qregs->data_dma_ctrl = (DMA_CTRL_CCLEAR | DMA_CTRL_CIRQ);
timeout = PTI_RESET_LIMIT;
while(--timeout && (qregs->sbus_ctrl & SBUS_CTRL_RESET))
udelay(20);
if(!timeout) {
printk(KERN_EMERG "qlogicpti%d: Cannot reset the ISP.", qpti->qpti_id);
return 1;
}
qregs->hcctrl = HCCTRL_RESET;
mdelay(1);
qregs->sbus_ctrl = (SBUS_CTRL_GENAB | SBUS_CTRL_ERIRQ);
set_sbus_cfg1(qregs, qpti->bursts);
qregs->sbus_semaphore = 0;
if(qregs->risc_psr & RISC_PSR_ULTRA) {
qpti->ultra = 1;
qregs->risc_mtreg = (RISC_MTREG_P0ULTRA | RISC_MTREG_P1ULTRA);
} else {
qpti->ultra = 0;
qregs->risc_mtreg = (RISC_MTREG_P0DFLT | RISC_MTREG_P1DFLT);
}
qregs->hcctrl = HCCTRL_REL;
/* Pin lines are only stable while RISC is paused. */
qregs->hcctrl = HCCTRL_PAUSE;
if(qregs->cpu_pdiff & CPU_PDIFF_MODE)
qpti->differential = 1;
else
qpti->differential = 0;
qregs->hcctrl = HCCTRL_REL;
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);
restore_flags(flags);
return 1;
}
/* Load the firmware. */
#if !defined(MODULE) && !defined(__sparc_v9__)
if (sparc_cpu_model != sun4d) {
dvma_addr = (unsigned long) mmu_lockarea((char *)&risc_code[0],
(sizeof(u_short) * risc_code_length));
param[0] = MBOX_LOAD_RAM;
param[1] = risc_code_addr;
param[2] = (dvma_addr >> 16);
param[3] = (dvma_addr & 0xffff);
param[4] = (sizeof(u_short) * risc_code_length);
if(qlogicpti_mbox_command(qpti, param, 1) ||
(param[0] != MBOX_COMMAND_COMPLETE)) {
printk(KERN_EMERG "qlogicpti%d: Firmware dload failed, I'm bolixed!\n",
qpti->qpti_id);
restore_flags(flags);
return 1;
}
mmu_unlockarea((char *)dvma_addr, (sizeof(u_short) * risc_code_length));
} else
#endif
/* We need to do it this slow way always on Ultra, SS[12]000. */
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);
restore_flags(flags);
return 1;
}
}
/* Reset the ISP again. */
qregs->hcctrl = HCCTRL_RESET;
mdelay(1);
qlogicpti_enable_irqs(qregs);
qregs->sbus_semaphore = 0;
qregs->hcctrl = HCCTRL_REL;
/* 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);
restore_flags(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);
restore_flags(flags);
return 1;
}
/* Snag the major and minor revisions from the result. */
qpti->fware_majrev = param[1];
qpti->fware_minrev = param[2];
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);
}
restore_flags(flags);
return 0;
}
static int qlogicpti_verify_tmon(struct qlogicpti *qpti)
{
int curstat = *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 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++) {
qpti->dev_param[i].device_flags = 0xf9;
qpti->dev_param[i].execution_throttle = 16;
qpti->dev_param[i].synchronous_period = 16;
qpti->dev_param[i].synchronous_offset = 12;
qpti->dev_param[i].device_enable = 1;
}
}
static void do_qlogicpti_intr_handler(int irq, void *dev_id, struct pt_regs *regs);
#ifndef __sparc_v9__
static void do_qlogicpti_intr_handler_sun4m(int irq, void *dev_id, struct pt_regs *regs);
#endif
/* Detect all PTI Qlogic ISP's in the machine. */
__initfunc(int qlogicpti_detect(Scsi_Host_Template *tpnt))
{
struct qlogicpti *qpti, *qlink;
struct Scsi_Host *qpti_host;
struct linux_sbus *sbus;
struct linux_sbus_device *qpti_dev, *sbdev_iter;
struct qlogicpti_regs *qregs;
volatile unsigned char *sreg;
unsigned char bsizes, bsizes_more;
int nqptis = 0, nqptis_in_use = 0;
int qpti_node;
int is_pti;
tpnt->proc_dir = &proc_scsi_qlogicpti;
qptichain = 0;
if(!SBus_chain)
return 0;
for_each_sbus(sbus) {
for_each_sbusdev(sbdev_iter, sbus) {
qpti_dev = sbdev_iter;
/* Is this a red snapper? */
if(strcmp(qpti_dev->prom_name, "ptisp") &&
strcmp(qpti_dev->prom_name, "PTI,ptisp") &&
strcmp(qpti_dev->prom_name, "QLGC,isp"))
continue;
/* Sometimes Antares cards come up not completely
* setup, and we get a report of a zero IRQ.
* Skip over them in such cases so we survive.
*/
if(qpti_dev->irqs[0] == 0) {
printk("qpti%d: Adapter reports no interrupt, "
"skipping over this card.", nqptis);
continue;
}
/* Yep, register and allocate software state. */
qpti_host = scsi_register(tpnt, sizeof(struct qlogicpti));
if(!qpti_host)
panic("Cannot register PTI Qlogic ISP SCSI host");
qpti = (struct qlogicpti *) qpti_host->hostdata;
if(!qpti)
panic("No qpti in hostdata");
/* We are wide capable, 16 targets. */
qpti_host->max_id = MAX_TARGETS;
#ifdef __sparc_v9__
qpti_host->unchecked_isa_dma = 1;
#endif
/* Setup back pointers and misc. state. */
qpti->qhost = qpti_host;
qpti->qdev = qpti_dev;
qpti->qpti_id = nqptis++;
/* Insert this one into the global interrupt service chain. */
if(qptichain) {
qlink = qptichain;
while(qlink->next) qlink = qlink->next;
qlink->next = qpti;
} else {
qptichain = qpti;
}
qpti->next = 0;
/* More misc. prom information. */
qpti_node = qpti_dev->prom_node;
prom_getstring(qpti_node, "name", qpti->prom_name,
sizeof(qpti->prom_name));
qpti->prom_node = qpti_node;
qpti->is_pti = is_pti =
(strcmp (qpti->prom_name, "QLGC,isp") != 0);
/* Setup the reg property for this device. */
prom_apply_sbus_ranges(qpti->qdev->my_bus,
qpti->qdev->reg_addrs,
1, qpti->qdev);
/* Map in Qlogic,ISP regs and the PTI status reg. */
qpti->qregs = qregs = (struct qlogicpti_regs *)
sparc_alloc_io(qpti->qdev->reg_addrs[0].phys_addr, 0,
qpti->qdev->reg_addrs[0].reg_size,
"PTI Qlogic/ISP Registers",
qpti->qdev->reg_addrs[0].which_io, 0x0);
if(!qregs)
panic("PTI Qlogic/ISP registers unmappable");
if(is_pti) {
/* Map this one read only. */
qpti->sreg = sreg = (volatile unsigned char *)
sparc_alloc_io((qpti->qdev->reg_addrs[0].phys_addr +
(16 * 4096)), 0,
sizeof(unsigned char),
"PTI Qlogic/ISP Status Reg",
qpti->qdev->reg_addrs[0].which_io, 1);
if(!sreg)
panic("PTI Qlogic/ISP status reg unmappable");
qpti->swsreg = 0;
}
qpti_host->base = (unsigned char *)qregs;
qpti_host->io_port = (unsigned int) ((unsigned long)qregs);
qpti_host->n_io_port = (unsigned char)
qpti->qdev->reg_addrs[0].reg_size;
qpti_host->irq = qpti->irq = qpti->qdev->irqs[0];
/* On Ultra and S{S1,C2}000 we must always call request_irq for each
* qpti, so that imap registers get setup etc.
* But irq values are different in that case anyway...
* Otherwise allocate the irq only if necessary.
*/
for_each_qlogicpti(qlink) {
if((qlink != qpti) && (qpti->irq == qlink->irq)) {
goto qpti_irq_acquired; /* BASIC rulez */
}
}
if(request_irq(qpti->qhost->irq,
#ifndef __sparc_v9__
(sparc_cpu_model == sun4m || sparc_cpu_model == sun4c) ?
do_qlogicpti_intr_handler_sun4m :
#endif
do_qlogicpti_intr_handler,
SA_SHIRQ, "PTI Qlogic/ISP SCSI", qpti)) {
printk("Cannot acquire PTI Qlogic/ISP irq line\n");
/* XXX Unmap regs, unregister scsi host, free things. */
continue;
}
qpti_irq_acquired:
printk("qpti%d: IRQ %s ",
qpti->qpti_id, __irq_itoa(qpti->qhost->irq));
/* Figure out our scsi ID on the bus */
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->qdev->my_bus->prom_node,
"scsi-initiator-id", 7);
qpti->qhost->this_id = qpti->scsi_id;
printk("SCSI ID %d ", qpti->scsi_id);
/* Check for what the best SBUS burst we can use happens
* to be on this machine.
*/
bsizes = prom_getintdefault(qpti->prom_node,"burst-sizes",0xff);
bsizes &= 0xff;
bsizes_more = prom_getintdefault(qpti->qdev->my_bus->prom_node,
"burst-sizes", 0xff);
if(bsizes_more != 0xff)
bsizes &= bsizes_more;
if(bsizes == 0xff || (bsizes & DMA_BURST16)==0 ||
(bsizes & DMA_BURST32) == 0)
bsizes = (DMA_BURST32 - 1);
qpti->bursts = bsizes;
/* Clear out Scsi_Cmnd array. */
memset(qpti->cmd_slots, 0, sizeof(qpti->cmd_slots));
/* The request and response queues must each be aligned
* on a page boundry.
*/
#define QSIZE(entries) (((entries) + 1) * QUEUE_ENTRY_LEN)
qpti->res_cpu = sparc_dvma_malloc(QSIZE(RES_QUEUE_LEN),
"PTISP Response Queue",
&qpti->res_dvma);
qpti->req_cpu = sparc_dvma_malloc(QSIZE(QLOGICISP_REQ_QUEUE_LEN),
"PTISP Request Queue",
&qpti->req_dvma);
#undef QSIZE
/* Set adapter and per-device default values. */
qlogicpti_set_hostdev_defaults(qpti);
/* Load the firmware. */
/* XXX Find out where is it possible to download
our sbus_risc_code on non-PTI ISP1000. */
if(is_pti && qlogicpti_load_firmware(qpti))
panic("SBUS Qlogic/ISP firmware load failed");
if (is_pti) {
/* Check the PTI status reg. */
if(qlogicpti_verify_tmon(qpti))
panic("PTI Qlogic/ISP tmon verification failed");
}
/* Reset the ISP and init res/req queues. */
if(qlogicpti_reset_hardware(qpti_host))
panic("PTI Qlogic/ISP cannot be reset");
if (is_pti) {
printk("(Firmware v%d.%d)",
qpti->fware_majrev, qpti->fware_minrev);
} else {
char buffer[60];
prom_getstring (qpti_node, "isp-fcode", buffer, 60);
if (buffer[0])
printk("(Firmware %s)", buffer);
if (prom_getbool(qpti_node, "differential"))
qpti->differential = 1;
}
printk (" [%s Wide, using %s interface]\n",
(qpti->ultra ? "Ultra" : "Fast"),
(qpti->differential ? "differential" : "single ended"));
nqptis_in_use++;
}
}
if (nqptis)
printk("QPTI: Total of %d PTI Qlogic/ISP hosts found, %d actually in use.\n",
nqptis, nqptis_in_use);
qptis_running = nqptis_in_use;
return nqptis;
}
int qlogicpti_release(struct Scsi_Host *host)
{
struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
struct qlogicpti_regs *qregs = qpti->qregs;
/* Shut up the card. */
qregs->sbus_ctrl = 0;
/* Free IRQ handler and unmap Qlogic,ISP and PTI status regs. */
free_irq(host->irq, NULL);
unmapioaddr((unsigned long)qregs);
/* QLGC,isp doesn't have status reg */
if (strcmp (qpti->prom_name, "QLGC,isp"))
unmapioaddr((unsigned long)qpti->sreg);
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 %s regs at %08lx",
__irq_itoa(qpti->qhost->irq), (unsigned long) 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, 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->target;
cmd->target_lun = Cmnd->lun;
cmd->cdb_length = Cmnd->cmd_len;
cmd->control_flags = 0;
if(Cmnd->device->tagged_supported) {
if(qpti->cmd_count[Cmnd->target] == 0)
qpti->tag_ages[Cmnd->target] = jiffies;
if((jiffies - qpti->tag_ages[Cmnd->target]) > (5*HZ)) {
cmd->control_flags = CFLAG_ORDERED_TAG;
qpti->tag_ages[Cmnd->target] = 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 u_int load_cmd(Scsi_Cmnd *Cmnd, struct Command_Entry *cmd,
struct qlogicpti *qpti, struct qlogicpti_regs *qregs,
u_int in_ptr, u_int out_ptr)
{
struct dataseg * ds;
struct scatterlist *sg;
int sg_count = Cmnd->use_sg;
int i, n;
if(sg_count) {
mmu_get_scsi_sgl((struct mmu_sglist *)Cmnd->buffer, (Cmnd->use_sg - 1),
qpti->qdev->my_bus);
cmd->segment_cnt = sg_count;
sg = (struct scatterlist *) Cmnd->request_buffer;
ds = cmd->dataseg;
/* Fill in first four sg entries: */
n = sg_count;
if(n > 4)
n = 4;
for(i = 0; i < n; i++, sg++) {
ds[i].d_base = (u_int) sg->dvma_address;
ds[i].d_count = (u_int) sg->length;
}
sg_count -= 4;
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) {
printk(KERN_EMERG "qlogicpti: Unexpected request queue overflow\n");
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(i = 0; i < n; i++, sg++) {
ds[i].d_base = (u_int) sg->dvma_address;
ds[i].d_count = (u_int) sg->length;
}
sg_count -= n;
}
} else {
/* XXX Casts are extremely gross, but with 64-bit cpu addresses
* XXX and 32-bit SBUS DVMA addresses what am I to do? -DaveM
*/
Cmnd->SCp.ptr = (char *)((unsigned long)
mmu_get_scsi_one((char *)Cmnd->request_buffer,
Cmnd->request_bufflen,
qpti->qdev->my_bus));
cmd->dataseg[0].d_base = (u_int) ((unsigned long)Cmnd->SCp.ptr);
cmd->dataseg[0].d_count = Cmnd->request_bufflen;
cmd->segment_cnt = 1;
}
/* Committed, record Scsi_Cmd so we can find it later. */
cmd->handle = in_ptr;
qpti->cmd_slots[in_ptr] = Cmnd;
qpti->cmd_count[Cmnd->target]++;
qregs->mbox4 = in_ptr;
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 = QLOGICISP_REQ_QUEUE_LEN - REQ_QUEUE_DEPTH(in_ptr, out_ptr) - 64;
host->can_queue = host->host_busy + num_free;
host->sg_tablesize = QLOGICISP_MAX_SG(num_free);
}
/*
* 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
*/
int qlogicpti_queuecommand(Scsi_Cmnd *Cmnd, void (*done)(Scsi_Cmnd *))
{
struct Scsi_Host *host = Cmnd->host;
struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
struct qlogicpti_regs *qregs = qpti->qregs;
u_int in_ptr = qpti->req_in_ptr;
u_int out_ptr = qregs->mbox4;
struct Command_Entry *cmd = (struct Command_Entry *) &qpti->req_cpu[in_ptr];
Cmnd->scsi_done = done;
in_ptr = NEXT_REQ_PTR(in_ptr);
if(in_ptr == out_ptr) {
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;
}
if(qpti->send_marker) {
marker_frob(cmd);
qpti->send_marker = 0;
if(NEXT_REQ_PTR(in_ptr) == out_ptr) {
qregs->mbox4 = in_ptr;
qpti->req_in_ptr = in_ptr;
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;
}
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, qregs, in_ptr, out_ptr)) == -1) {
/* 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;
}
update_can_queue(host, in_ptr, out_ptr);
return 0;
}
static int qlogicpti_return_status(struct Status_Entry *sts)
{
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 : unknown completion status 0x%04x\n",
sts->completion_status);
host_status = DID_ERROR;
break;
}
return (sts->scsi_status & STATUS_MASK) | (host_status << 16);
}
static __inline__ int qlogicpti_intr_handler(struct qlogicpti *qpti)
{
Scsi_Cmnd *Cmnd;
struct Status_Entry *sts;
u_int in_ptr, out_ptr;
struct qlogicpti_regs *qregs;
if(!(qpti->qregs->sbus_stat & SBUS_STAT_RINT))
return 0;
qregs = qpti->qregs;
in_ptr = qregs->mbox5;
qregs->hcctrl = HCCTRL_CRIRQ;
if(qregs->sbus_semaphore & SBUS_SEMAPHORE_LCK) {
switch(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;
}
qregs->sbus_semaphore = 0;
}
/* 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,
sizeof(Cmnd->sense_buffer));
if(sts->hdr.entry_type == ENTRY_STATUS)
Cmnd->result = qlogicpti_return_status(sts);
else
Cmnd->result = DID_ERROR << 16;
if(Cmnd->use_sg)
mmu_release_scsi_sgl((struct mmu_sglist *)
Cmnd->buffer,
Cmnd->use_sg - 1,
qpti->qdev->my_bus);
else
mmu_release_scsi_one((__u32)((unsigned long)Cmnd->SCp.ptr),
Cmnd->request_bufflen,
qpti->qdev->my_bus);
qpti->cmd_count[Cmnd->target]--;
qregs->mbox5 = out_ptr;
Cmnd->scsi_done(Cmnd);
}
qpti->res_out_ptr = out_ptr;
return 1;
}
#ifndef __sparc_v9__
static void do_qlogicpti_intr_handler_sun4m(int irq, void *dev_id, struct pt_regs *regs)
{
unsigned long flags;
struct qlogicpti *qpti;
int again;
spin_lock_irqsave(&io_request_lock, flags);
do {
again = 0;
for_each_qlogicpti(qpti)
again |= qlogicpti_intr_handler(qpti);
} while (again);
spin_unlock_irqrestore(&io_request_lock, flags);
}
#endif
static void do_qlogicpti_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
{
unsigned long flags;
spin_lock_irqsave(&io_request_lock, flags);
qlogicpti_intr_handler((struct qlogicpti *)dev_id);
spin_unlock_irqrestore(&io_request_lock, flags);
}
int qlogicpti_abort(Scsi_Cmnd *Cmnd)
{
u_short param[6];
struct Scsi_Host *host = Cmnd->host;
struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
int return_status = SCSI_ABORT_SUCCESS;
printk(KERN_WARNING "qlogicpti : Aborting cmd for tgt[%d] lun[%d]\n",
(int)Cmnd->target, (int)Cmnd->lun);
qlogicpti_disable_irqs(qpti->qregs);
param[0] = MBOX_ABORT;
param[1] = (((u_short) Cmnd->target) << 8) | Cmnd->lun;
param[2] = ((unsigned int)((unsigned long)Cmnd)) >> 16;
param[3] = ((unsigned int)((unsigned long)Cmnd)) & 0xffff;
if(qlogicpti_mbox_command(qpti, param, 0) ||
(param[0] != MBOX_COMMAND_COMPLETE)) {
printk(KERN_EMERG "qlogicpti : scsi abort failure: %x\n", param[0]);
return_status = SCSI_ABORT_ERROR;
}
qlogicpti_enable_irqs(qpti->qregs);
return return_status;
}
int qlogicpti_reset(Scsi_Cmnd *Cmnd, unsigned int reset_flags)
{
u_short param[6];
struct Scsi_Host *host = Cmnd->host;
struct qlogicpti *qpti = (struct qlogicpti *) host->hostdata;
int return_status = SCSI_RESET_SUCCESS;
printk(KERN_WARNING "qlogicpti : Resetting SCSI bus!\n");
qlogicpti_disable_irqs(qpti->qregs);
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 : scsi bus reset failure: %x\n", param[0]);
return_status = SCSI_RESET_ERROR;
}
qlogicpti_enable_irqs(qpti->qregs);
return return_status;
}
#ifdef MODULE
Scsi_Host_Template driver_template = QLOGICPTI;
#include "scsi_module.c"
EXPORT_NO_SYMBOLS;
#endif /* MODULE */
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