patch-2.1.93 linux/drivers/scsi/u14-34f.c
Next file: linux/drivers/scsi/u14-34f.h
Previous file: linux/drivers/scsi/tmscsim.h
Back to the patch index
Back to the overall index
- Lines: 773
- Date:
Sun Apr 5 11:26:29 1998
- Orig file:
v2.1.92/linux/drivers/scsi/u14-34f.c
- Orig date:
Mon Sep 15 09:41:09 1997
diff -u --recursive --new-file v2.1.92/linux/drivers/scsi/u14-34f.c linux/drivers/scsi/u14-34f.c
@@ -1,6 +1,13 @@
/*
* u14-34f.c - Low-level driver for UltraStor 14F/34F SCSI host adapters.
*
+ * 4 Apr 1998 rev. 4.02 for linux 2.0.33 and 2.1.92
+ * io_port is now unsigned long.
+ *
+ * 17 Mar 1998 rev. 4.01 for linux 2.0.33 and 2.1.88
+ * Use new scsi error handling code (if linux version >= 2.1.88).
+ * Use new interrupt code.
+ *
* 12 Sep 1997 rev. 3.11 for linux 2.0.30 and 2.1.55
* Use of udelay inside the wait loops to avoid timeout
* problems with fast cpus.
@@ -113,7 +120,7 @@
*
* Multiple U14F and/or U34F host adapters are supported.
*
- * Copyright (C) 1994-1997 Dario Ballabio (dario@milano.europe.dg.com)
+ * Copyright (C) 1994-1998 Dario Ballabio (dario@milano.europe.dg.com)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that redistributions of source
@@ -329,9 +336,7 @@
#undef DEBUG_LINKED_COMMANDS
#undef DEBUG_DETECT
#undef DEBUG_INTERRUPT
-#undef DEBUG_STATISTICS
#undef DEBUG_RESET
-#undef DEBUG_SMP
#define MAX_ISA 3
#define MAX_VESA 1
@@ -341,7 +346,6 @@
#define MAX_CHANNEL 1
#define MAX_LUN 8
#define MAX_TARGET 8
-#define MAX_IRQ 16
#define MAX_MAILBOXES 16
#define MAX_SGLIST 32
#define MAX_SAFE_SGLIST 16
@@ -349,7 +353,7 @@
#define MAX_CMD_PER_LUN 2
#define MAX_TAGGED_CMD_PER_LUN (MAX_MAILBOXES - MAX_CMD_PER_LUN)
-#define SKIP UINT_MAX
+#define SKIP ULONG_MAX
#define FALSE 0
#define TRUE 1
#define FREE 0
@@ -424,7 +428,6 @@
unsigned int cp_stat[MAX_MAILBOXES]; /* FREE, IN_USE, LOCKED, IN_RESET */
unsigned int last_cp_used; /* Index of last mailbox used */
unsigned int iocount; /* Total i/o done for this board */
- unsigned int multicount; /* Total ... in second ihdlr loop */
int board_number; /* Number of this board */
char board_name[16]; /* Name of this board */
char board_id[256]; /* data from INQUIRY on this board */
@@ -443,9 +446,12 @@
static struct Scsi_Host *sh[MAX_BOARDS + 1];
static const char *driver_name = "Ux4F";
-static unsigned int irqlist[MAX_IRQ], calls[MAX_IRQ];
+static char sha[MAX_BOARDS];
-static unsigned int io_port[] __initdata = {
+/* Initialize num_boards so that ihdlr can work while detect is in progress */
+static unsigned int num_boards = MAX_BOARDS;
+
+static unsigned long io_port[] __initdata = {
/* Space for MAX_INT_PARAM ports usable while loading as a module */
SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP,
@@ -462,10 +468,10 @@
#define BN(board) (HD(board)->board_name)
#define SWAP_BYTE(x) ((unsigned long)( \
- (((unsigned long)(x) & 0x000000ffU) << 24) | \
- (((unsigned long)(x) & 0x0000ff00U) << 8) | \
- (((unsigned long)(x) & 0x00ff0000U) >> 8) | \
- (((unsigned long)(x) & 0xff000000U) >> 24)))
+ (((unsigned long)(x) & 0x000000ffU) << 24) | \
+ (((unsigned long)(x) & 0x0000ff00U) << 8) | \
+ (((unsigned long)(x) & 0x00ff0000U) >> 8) | \
+ (((unsigned long)(x) & 0xff000000U) >> 24)))
#if defined(__BIG_ENDIAN)
#define H2DEV(x) SWAP_BYTE(x)
@@ -560,7 +566,7 @@
return;
}
-static inline int wait_on_busy(unsigned int iobase, unsigned int loop) {
+static inline int wait_on_busy(unsigned long iobase, unsigned int loop) {
while (inb(iobase + REG_LCL_INTR) & BSY_ASSERTED) {
udelay(1L);
@@ -614,7 +620,7 @@
}
__initfunc (static inline int port_detect \
- (unsigned int port_base, unsigned int j, Scsi_Host_Template *tpnt)) {
+ (unsigned long port_base, unsigned int j, Scsi_Host_Template *tpnt)) {
unsigned char irq, dma_channel, subversion, i;
unsigned char in_byte;
char *bus_type, dma_name[16];
@@ -637,8 +643,8 @@
unsigned char heads;
unsigned char sectors;
} mapping_table[4] = {
- { 16, 63 }, { 64, 32 }, { 64, 63 }, { 64, 32 }
- };
+ { 16, 63 }, { 64, 32 }, { 64, 63 }, { 64, 32 }
+ };
struct config_1 {
unsigned char bios_segment: 3;
@@ -659,7 +665,7 @@
sprintf(name, "%s%d", driver_name, j);
if(check_region(port_base, REGION_SIZE)) {
- printk("%s: address 0x%03x in use, skipping probe.\n", name, port_base);
+ printk("%s: address 0x%03lx in use, skipping probe.\n", name, port_base);
return FALSE;
}
@@ -676,17 +682,18 @@
dma_channel = dma_channel_table[config_1.dma_channel];
subversion = (in_byte & 0x0f);
- /* Board detected, allocate its IRQ if not already done */
- if ((irq >= MAX_IRQ) || (!irqlist[irq] && request_irq(irq,
- u14_34f_interrupt_handler, SA_INTERRUPT, driver_name, NULL))) {
+ /* Board detected, allocate its IRQ */
+ if (request_irq(irq, u14_34f_interrupt_handler,
+ SA_INTERRUPT | ((subversion == ESA) ? SA_SHIRQ : 0),
+ driver_name, (void *) &sha[j])) {
printk("%s: unable to allocate IRQ %u, detaching.\n", name, irq);
return FALSE;
}
if (subversion == ISA && request_dma(dma_channel, driver_name)) {
printk("%s: unable to allocate DMA channel %u, detaching.\n",
- name, dma_channel);
- free_irq(irq, NULL);
+ name, dma_channel);
+ free_irq(irq, &sha[j]);
return FALSE;
}
@@ -695,7 +702,7 @@
if (sh[j] == NULL) {
printk("%s: unable to register host, detaching.\n", name);
- if (!irqlist[irq]) free_irq(irq, NULL);
+ free_irq(irq, &sha[j]);
if (subversion == ISA) free_dma(dma_channel);
@@ -734,7 +741,6 @@
HD(j)->sectors = mapping_table[config_2.mapping_mode].sectors;
HD(j)->subversion = subversion;
HD(j)->board_number = j;
- irqlist[irq]++;
if (have_old_firmware) sh[j]->sg_tablesize = MAX_SAFE_SGLIST;
@@ -767,12 +773,12 @@
HD(j)->board_id[40] = 0;
if (strcmp(&HD(j)->board_id[32], "06000600")) {
- printk("%s: %s.\n", BN(j), &HD(j)->board_id[8]);
- printk("%s: firmware %s is outdated, FW PROM should be 28004-006.\n",
- BN(j), &HD(j)->board_id[32]);
- sh[j]->hostt->use_clustering = DISABLE_CLUSTERING;
- sh[j]->sg_tablesize = MAX_SAFE_SGLIST;
- }
+ printk("%s: %s.\n", BN(j), &HD(j)->board_id[8]);
+ printk("%s: firmware %s is outdated, FW PROM should be 28004-006.\n",
+ BN(j), &HD(j)->board_id[32]);
+ sh[j]->hostt->use_clustering = DISABLE_CLUSTERING;
+ sh[j]->sg_tablesize = MAX_SAFE_SGLIST;
+ }
}
if (dma_channel == NO_DMA) sprintf(dma_name, "%s", "BMST");
@@ -792,10 +798,11 @@
if (max_queue_depth < MAX_CMD_PER_LUN) max_queue_depth = MAX_CMD_PER_LUN;
- printk("%s: %s 0x%03x, BIOS 0x%05x, IRQ %u, %s, SG %d, MB %d, of:%c, "\
- "lc:%c, mq:%d.\n", BN(j), bus_type, sh[j]->io_port, (int)sh[j]->base,
- sh[j]->irq, dma_name, sh[j]->sg_tablesize, sh[j]->can_queue,
- YESNO(have_old_firmware), YESNO(linked_comm), max_queue_depth);
+ printk("%s: %s 0x%03lx, BIOS 0x%05x, IRQ %u, %s, SG %d, MB %d, of:%c, "\
+ "lc:%c, mq:%d.\n", BN(j), bus_type, (unsigned long)sh[j]->io_port,
+ (int)sh[j]->base, sh[j]->irq, dma_name, sh[j]->sg_tablesize,
+ sh[j]->can_queue, YESNO(have_old_firmware), YESNO(linked_comm),
+ max_queue_depth);
if (sh[j]->max_id > 8 || sh[j]->max_lun > 8)
printk("%s: wide SCSI support enabled, max_id %u, max_lun %u.\n",
@@ -857,11 +864,6 @@
}
#endif
- for (k = 0; k < MAX_IRQ; k++) {
- irqlist[k] = 0;
- calls[k] = 0;
- }
-
for (k = 0; k < MAX_BOARDS + 1; k++) sh[k] = NULL;
for (k = 0; io_port[k]; k++) {
@@ -872,8 +874,9 @@
}
if (j > 0)
- printk("UltraStor 14F/34F: Copyright (C) 1994-1997 Dario Ballabio.\n");
+ printk("UltraStor 14F/34F: Copyright (C) 1994-1998 Dario Ballabio.\n");
+ num_boards = j;
restore_flags(flags);
return j;
}
@@ -938,26 +941,26 @@
if (i >= sh[j]->can_queue) i = 0;
if (HD(j)->cp_stat[i] == FREE) {
- HD(j)->last_cp_used = i;
- break;
- }
+ HD(j)->last_cp_used = i;
+ break;
+ }
}
if (k == sh[j]->can_queue) {
printk("%s: qcomm, no free mailbox, resetting.\n", BN(j));
if (HD(j)->in_reset)
- printk("%s: qcomm, already in reset.\n", BN(j));
+ printk("%s: qcomm, already in reset.\n", BN(j));
else if (u14_34f_reset(SCpnt, SCSI_RESET_SUGGEST_BUS_RESET)
== SCSI_RESET_SUCCESS)
- panic("%s: qcomm, SCSI_RESET_SUCCESS.\n", BN(j));
+ panic("%s: qcomm, SCSI_RESET_SUCCESS.\n", BN(j));
SCpnt->result = DID_BUS_BUSY << 16;
SCpnt->host_scribble = NULL;
printk("%s: qcomm, pid %ld, DID_BUS_BUSY, done.\n", BN(j), SCpnt->pid);
restore_flags(flags);
done(SCpnt);
- return 0;
+ return 1;
}
/* Set pointer to control packet structure */
@@ -969,16 +972,16 @@
SCpnt->host_scribble = (unsigned char *) &cpp->index;
if (do_trace) printk("%s: qcomm, mbox %d, target %d.%d:%d, pid %ld.\n",
- BN(j), i, SCpnt->channel, SCpnt->target,
+ BN(j), i, SCpnt->channel, SCpnt->target,
SCpnt->lun, SCpnt->pid);
cpp->xdir = DTD_IN;
for (k = 0; k < ARRAY_SIZE(data_out_cmds); k++)
if (SCpnt->cmnd[0] == data_out_cmds[k]) {
- cpp->xdir = DTD_OUT;
- break;
- }
+ cpp->xdir = DTD_OUT;
+ break;
+ }
if (cpp->xdir == DTD_IN)
for (k = 0; k < ARRAY_SIZE(data_none_cmds); k++)
@@ -1023,7 +1026,7 @@
SCpnt->pid);
restore_flags(flags);
done(SCpnt);
- return 0;
+ return 1;
}
/* Store pointer in OGM address bytes */
@@ -1048,14 +1051,14 @@
if (SCarg->host_scribble == NULL
|| SCarg->serial_number != SCarg->serial_number_at_timeout) {
printk("%s: abort, target %d.%d:%d, pid %ld inactive.\n",
- BN(j), SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid);
+ BN(j), SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid);
restore_flags(flags);
return SCSI_ABORT_NOT_RUNNING;
}
i = *(unsigned int *)SCarg->host_scribble;
printk("%s: abort, mbox %d, target %d.%d:%d, pid %ld.\n",
- BN(j), i, SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid);
+ BN(j), i, SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid);
if (i >= sh[j]->can_queue)
panic("%s: abort, invalid SCarg->host_scribble.\n", BN(j));
@@ -1076,8 +1079,8 @@
printk("%s: abort, mbox %d is in use.\n", BN(j), i);
if (SCarg != HD(j)->cp[i].SCpnt)
- panic("%s: abort, mbox %d, SCarg %p, cp SCpnt %p.\n",
- BN(j), i, SCarg, HD(j)->cp[i].SCpnt);
+ panic("%s: abort, mbox %d, SCarg %p, cp SCpnt %p.\n",
+ BN(j), i, SCarg, HD(j)->cp[i].SCpnt);
if (inb(sh[j]->io_port + REG_SYS_INTR) & IRQ_ASSERTED)
printk("%s: abort, mbox %d, interrupt pending.\n", BN(j), i);
@@ -1103,7 +1106,7 @@
SCarg->host_scribble = NULL;
HD(j)->cp_stat[i] = FREE;
printk("%s, abort, mbox %d ready, DID_ABORT, pid %ld done.\n",
- BN(j), i, SCarg->pid);
+ BN(j), i, SCarg->pid);
SCarg->scsi_done(SCarg);
restore_flags(flags);
return SCSI_ABORT_SUCCESS;
@@ -1123,7 +1126,7 @@
cli();
j = ((struct hostdata *) SCarg->host->hostdata)->board_number;
printk("%s: reset, enter, target %d.%d:%d, pid %ld, reset_flags %u.\n",
- BN(j), SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid,
+ BN(j), SCarg->channel, SCarg->target, SCarg->lun, SCarg->pid,
reset_flags);
if (SCarg->host_scribble == NULL)
@@ -1160,13 +1163,13 @@
if (HD(j)->cp_stat[i] == FREE) continue;
if (HD(j)->cp_stat[i] == LOCKED) {
- HD(j)->cp_stat[i] = FREE;
- printk("%s: reset, locked mbox %d forced free.\n", BN(j), i);
- continue;
- }
+ HD(j)->cp_stat[i] = FREE;
+ printk("%s: reset, locked mbox %d forced free.\n", BN(j), i);
+ continue;
+ }
if (!(SCpnt = HD(j)->cp[i].SCpnt))
- panic("%s: reset, mbox %d, SCpnt == NULL.\n", BN(j), i);
+ panic("%s: reset, mbox %d, SCpnt == NULL.\n", BN(j), i);
if (HD(j)->cp_stat[i] == READY || HD(j)->cp_stat[i] == ABORTING) {
HD(j)->cp_stat[i] = ABORTING;
@@ -1181,13 +1184,13 @@
}
if (SCpnt->host_scribble == NULL)
- panic("%s: reset, mbox %d, garbled SCpnt.\n", BN(j), i);
+ panic("%s: reset, mbox %d, garbled SCpnt.\n", BN(j), i);
if (*(unsigned int *)SCpnt->host_scribble != i)
- panic("%s: reset, mbox %d, index mismatch.\n", BN(j), i);
+ panic("%s: reset, mbox %d, index mismatch.\n", BN(j), i);
if (SCpnt->scsi_done == NULL)
- panic("%s: reset, mbox %d, SCpnt->scsi_done == NULL.\n", BN(j), i);
+ panic("%s: reset, mbox %d, SCpnt->scsi_done == NULL.\n", BN(j), i);
if (SCpnt == SCarg) arg_done = TRUE;
}
@@ -1223,7 +1226,7 @@
HD(j)->cp_stat[i] = LOCKED;
printk("%s, reset, mbox %d locked, DID_RESET, pid %ld done.\n",
- BN(j), i, SCpnt->pid);
+ BN(j), i, SCpnt->pid);
}
else if (HD(j)->cp_stat[i] == ABORTING) {
@@ -1235,7 +1238,7 @@
HD(j)->cp_stat[i] = FREE;
printk("%s, reset, mbox %d aborting, DID_RESET, pid %ld done.\n",
- BN(j), i, SCpnt->pid);
+ BN(j), i, SCpnt->pid);
}
else
@@ -1428,224 +1431,182 @@
}
}
-static void u14_34f_interrupt_handler(int irq, void *dev_id,
- struct pt_regs *regs) {
+static void u14_34f_interrupt_handler(int irq, void *shap,
+ struct pt_regs *regs) {
Scsi_Cmnd *SCpnt;
- unsigned long flags;
- unsigned int i, j, k, c, status, tstatus, loops, total_loops = 0, reg, ret;
+ unsigned int i, j, k, c, status, tstatus, reg, ret;
struct mscp *spp;
- save_flags(flags);
- cli();
+ /* Check if the interrupt must be processed by this handler */
+ if ((j = (unsigned int)((char *)shap - sha)) >= num_boards) return;
- if (!irqlist[irq]) {
- printk("%s, ihdlr, irq %d, unexpected interrupt.\n", driver_name, irq);
- restore_flags(flags);
+ if (sh[j]->irq != irq)
+ panic("%s: ihdlr, irq %d, sh[j]->irq %d.\n", BN(j), irq, sh[j]->irq);
+
+ if (do_trace) printk("%s: ihdlr, enter, irq %d, count %d.\n", BN(j), irq,
+ HD(j)->iocount);
+
+ /* Check if this board need to be serviced */
+ if (!((reg = inb(sh[j]->io_port + REG_SYS_INTR)) & IRQ_ASSERTED)) return;
+
+ spp = (struct mscp *)DEV2V(ret = inl(sh[j]->io_port + REG_ICM));
+
+ /* Clear interrupt pending flag */
+ outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR);
+
+ i = spp - HD(j)->cp;
+
+ if (spp < HD(j)->cp || spp >= HD(j)->cp + sh[j]->can_queue
+ || i >= sh[j]->can_queue)
+ panic("%s: ihdlr, invalid mscp bus address %p, cp0 %p.\n", BN(j),
+ (void *)ret, HD(j)->cp);
+
+ if (HD(j)->cp_stat[i] == IGNORE) {
+ HD(j)->cp_stat[i] = FREE;
+ return;
+ }
+ else if (HD(j)->cp_stat[i] == LOCKED) {
+ HD(j)->cp_stat[i] = FREE;
+ printk("%s: ihdlr, mbox %d unlocked, count %d.\n", BN(j), i,
+ HD(j)->iocount);
+ return;
+ }
+ else if (HD(j)->cp_stat[i] == FREE) {
+ printk("%s: ihdlr, mbox %d is free, count %d.\n", BN(j), i,
+ HD(j)->iocount);
return;
}
+ else if (HD(j)->cp_stat[i] == IN_RESET)
+ printk("%s: ihdlr, mbox %d is in reset.\n", BN(j), i);
+ else if (HD(j)->cp_stat[i] != IN_USE)
+ panic("%s: ihdlr, mbox %d, invalid cp_stat.\n", BN(j), i);
+
+ HD(j)->cp_stat[i] = FREE;
+ SCpnt = spp->SCpnt;
+
+ if (SCpnt == NULL) panic("%s: ihdlr, mbox %d, SCpnt == NULL.\n", BN(j), i);
+
+ if (SCpnt->host_scribble == NULL)
+ panic("%s: ihdlr, mbox %d, pid %ld, SCpnt %p garbled.\n", BN(j), i,
+ SCpnt->pid, SCpnt);
+
+ if (*(unsigned int *)SCpnt->host_scribble != i)
+ panic("%s: ihdlr, mbox %d, pid %ld, index mismatch %d, irq %d.\n",
+ BN(j), i, SCpnt->pid, *(unsigned int *)SCpnt->host_scribble, irq);
- if (do_trace) printk("%s: ihdlr, enter, irq %d, calls %d.\n",
- driver_name, irq, calls[irq]);
+ if (linked_comm && SCpnt->device->queue_depth > 2
+ && TLDEV(SCpnt->device->type))
+ flush_dev(SCpnt->device, SCpnt->request.sector, j, TRUE);
- /* Service all the boards configured on this irq */
- for (j = 0; sh[j] != NULL; j++) {
+ tstatus = status_byte(spp->target_status);
- if (sh[j]->irq != irq) continue;
+ switch (spp->adapter_status) {
+ case ASOK: /* status OK */
- loops = 0;
-
- /* Loop until all interrupts for a board are serviced */
- while ((reg = inb(sh[j]->io_port + REG_SYS_INTR)) & IRQ_ASSERTED) {
- total_loops++;
- loops++;
-
- if (do_trace) printk("%s: ihdlr, start service, count %d.\n",
- BN(j), HD(j)->iocount);
-
- spp = (struct mscp *)DEV2V(ret = inl(sh[j]->io_port + REG_ICM));
-
- /* Clear interrupt pending flag */
- outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR);
-
- i = spp - HD(j)->cp;
-
- if (spp < HD(j)->cp || spp >= HD(j)->cp + sh[j]->can_queue
- || i >= sh[j]->can_queue)
- panic("%s: ihdlr, invalid mscp bus address %p, cp0 %p.\n",
- BN(j), (void *)ret, HD(j)->cp);
-
- if (HD(j)->cp_stat[i] == IGNORE) {
- HD(j)->cp_stat[i] = FREE;
- continue;
- }
- else if (HD(j)->cp_stat[i] == LOCKED) {
- HD(j)->cp_stat[i] = FREE;
- printk("%s: ihdlr, mbox %d unlocked, count %d.\n",
- BN(j), i, HD(j)->iocount);
- continue;
- }
- else if (HD(j)->cp_stat[i] == FREE) {
- printk("%s: ihdlr, mbox %d is free, count %d.\n",
- BN(j), i, HD(j)->iocount);
- continue;
- }
- else if (HD(j)->cp_stat[i] == IN_RESET)
- printk("%s: ihdlr, mbox %d is in reset.\n", BN(j), i);
- else if (HD(j)->cp_stat[i] != IN_USE)
- panic("%s: ihdlr, mbox %d, invalid cp_stat.\n", BN(j), i);
-
- HD(j)->cp_stat[i] = FREE;
- SCpnt = spp->SCpnt;
-
- if (SCpnt == NULL)
- panic("%s: ihdlr, mbox %d, SCpnt == NULL.\n", BN(j), i);
-
- if (SCpnt->host_scribble == NULL)
- panic("%s: ihdlr, mbox %d, pid %ld, SCpnt %p garbled.\n",
- BN(j), i, SCpnt->pid, SCpnt);
-
- if (*(unsigned int *)SCpnt->host_scribble != i)
- panic("%s: ihdlr, mbox %d, pid %ld, index mismatch %d,"\
- " irq %d.\n", BN(j), i, SCpnt->pid,
- *(unsigned int *)SCpnt->host_scribble, irq);
-
- if (linked_comm && SCpnt->device->queue_depth > 2
- && TLDEV(SCpnt->device->type))
- flush_dev(SCpnt->device, SCpnt->request.sector, j, TRUE);
-
- tstatus = status_byte(spp->target_status);
-
- switch (spp->adapter_status) {
- case ASOK: /* status OK */
-
- /* Forces a reset if a disk drive keeps returning BUSY */
- if (tstatus == BUSY && SCpnt->device->type != TYPE_TAPE)
- status = DID_ERROR << 16;
-
- /* If there was a bus reset, redo operation on each target */
- else if (tstatus != GOOD && SCpnt->device->type == TYPE_DISK
- && HD(j)->target_redo[SCpnt->target][SCpnt->channel])
- status = DID_BUS_BUSY << 16;
-
- /* Works around a flaw in scsi.c */
- else if (tstatus == CHECK_CONDITION
- && SCpnt->device->type == TYPE_DISK
- && (SCpnt->sense_buffer[2] & 0xf) == RECOVERED_ERROR)
- status = DID_BUS_BUSY << 16;
-
- else
- status = DID_OK << 16;
-
- if (tstatus == GOOD)
- HD(j)->target_redo[SCpnt->target][SCpnt->channel] = FALSE;
-
- if (spp->target_status && SCpnt->device->type == TYPE_DISK)
- printk("%s: ihdlr, target %d.%d:%d, pid %ld, "\
- "target_status 0x%x, sense key 0x%x.\n", BN(j),
- SCpnt->channel, SCpnt->target, SCpnt->lun,
- SCpnt->pid, spp->target_status,
- SCpnt->sense_buffer[2]);
-
- HD(j)->target_to[SCpnt->target][SCpnt->channel] = 0;
-
- if (HD(j)->last_retried_pid == SCpnt->pid) HD(j)->retries = 0;
-
- break;
- case ASST: /* Selection Time Out */
-
- if (HD(j)->target_to[SCpnt->target][SCpnt->channel] > 1)
- status = DID_ERROR << 16;
- else {
- status = DID_TIME_OUT << 16;
- HD(j)->target_to[SCpnt->target][SCpnt->channel]++;
- }
-
- break;
-
- /* Perform a limited number of internal retries */
- case 0x93: /* Unexpected bus free */
- case 0x94: /* Target bus phase sequence failure */
- case 0x96: /* Illegal SCSI command */
- case 0xa3: /* SCSI bus reset error */
-
- for (c = 0; c <= sh[j]->max_channel; c++)
- for (k = 0; k < sh[j]->max_id; k++)
- HD(j)->target_redo[k][c] = TRUE;
-
+ /* Forces a reset if a disk drive keeps returning BUSY */
+ if (tstatus == BUSY && SCpnt->device->type != TYPE_TAPE)
+ status = DID_ERROR << 16;
+
+ /* If there was a bus reset, redo operation on each target */
+ else if (tstatus != GOOD && SCpnt->device->type == TYPE_DISK
+ && HD(j)->target_redo[SCpnt->target][SCpnt->channel])
+ status = DID_BUS_BUSY << 16;
+
+ /* Works around a flaw in scsi.c */
+ else if (tstatus == CHECK_CONDITION
+ && SCpnt->device->type == TYPE_DISK
+ && (SCpnt->sense_buffer[2] & 0xf) == RECOVERED_ERROR)
+ status = DID_BUS_BUSY << 16;
- case 0x92: /* Data over/under-run */
+ else
+ status = DID_OK << 16;
- if (SCpnt->device->type != TYPE_TAPE
- && HD(j)->retries < MAX_INTERNAL_RETRIES) {
- status = DID_BUS_BUSY << 16;
- HD(j)->retries++;
- HD(j)->last_retried_pid = SCpnt->pid;
- }
- else
- status = DID_ERROR << 16;
-
- break;
- case 0x01: /* Invalid command */
- case 0x02: /* Invalid parameters */
- case 0x03: /* Invalid data list */
- case 0x84: /* SCSI bus abort error */
- case 0x9b: /* Auto request sense error */
- case 0x9f: /* Unexpected command complete message error */
- case 0xff: /* Invalid parameter in the S/G list */
- default:
- status = DID_ERROR << 16;
- break;
- }
+ if (tstatus == GOOD)
+ HD(j)->target_redo[SCpnt->target][SCpnt->channel] = FALSE;
- SCpnt->result = status | spp->target_status;
- HD(j)->iocount++;
+ if (spp->target_status && SCpnt->device->type == TYPE_DISK)
+ printk("%s: ihdlr, target %d.%d:%d, pid %ld, "\
+ "target_status 0x%x, sense key 0x%x.\n", BN(j),
+ SCpnt->channel, SCpnt->target, SCpnt->lun,
+ SCpnt->pid, spp->target_status,
+ SCpnt->sense_buffer[2]);
- if (loops > 1) HD(j)->multicount++;
+ HD(j)->target_to[SCpnt->target][SCpnt->channel] = 0;
-#if defined (DEBUG_INTERRUPT)
- if (SCpnt->result || do_trace)
-#else
- if ((spp->adapter_status != ASOK && HD(j)->iocount > 1000) ||
- (spp->adapter_status != ASOK &&
- spp->adapter_status != ASST && HD(j)->iocount <= 1000) ||
- do_trace || msg_byte(spp->target_status))
-#endif
- printk("%s: ihdlr, mbox %2d, err 0x%x:%x,"\
- " target %d.%d:%d, pid %ld, reg 0x%x, count %d.\n",
- BN(j), i, spp->adapter_status, spp->target_status,
- SCpnt->channel, SCpnt->target, SCpnt->lun, SCpnt->pid,
- reg, HD(j)->iocount);
+ if (HD(j)->last_retried_pid == SCpnt->pid) HD(j)->retries = 0;
- /* Set the command state to inactive */
- SCpnt->host_scribble = NULL;
+ break;
+ case ASST: /* Selection Time Out */
- restore_flags(flags);
- SCpnt->scsi_done(SCpnt);
- cli();
+ if (HD(j)->target_to[SCpnt->target][SCpnt->channel] > 1)
+ status = DID_ERROR << 16;
+ else {
+ status = DID_TIME_OUT << 16;
+ HD(j)->target_to[SCpnt->target][SCpnt->channel]++;
+ }
- } /* Multiple command loop */
+ break;
- } /* Boards loop */
+ /* Perform a limited number of internal retries */
+ case 0x93: /* Unexpected bus free */
+ case 0x94: /* Target bus phase sequence failure */
+ case 0x96: /* Illegal SCSI command */
+ case 0xa3: /* SCSI bus reset error */
+
+ for (c = 0; c <= sh[j]->max_channel; c++)
+ for (k = 0; k < sh[j]->max_id; k++)
+ HD(j)->target_redo[k][c] = TRUE;
+
- calls[irq]++;
+ case 0x92: /* Data over/under-run */
-#if defined (DEBUG_SMP)
- if (total_loops == 0)
- printk("%s: ihdlr, irq %d, no command completed, calls %d.\n",
- driver_name, irq, calls[irq]);
-#endif
+ if (SCpnt->device->type != TYPE_TAPE
+ && HD(j)->retries < MAX_INTERNAL_RETRIES) {
+ status = DID_BUS_BUSY << 16;
+ HD(j)->retries++;
+ HD(j)->last_retried_pid = SCpnt->pid;
+ }
+ else
+ status = DID_ERROR << 16;
+
+ break;
+ case 0x01: /* Invalid command */
+ case 0x02: /* Invalid parameters */
+ case 0x03: /* Invalid data list */
+ case 0x84: /* SCSI bus abort error */
+ case 0x9b: /* Auto request sense error */
+ case 0x9f: /* Unexpected command complete message error */
+ case 0xff: /* Invalid parameter in the S/G list */
+ default:
+ status = DID_ERROR << 16;
+ break;
+ }
- if (do_trace) printk("%s: ihdlr, exit, irq %d, calls %d.\n",
- driver_name, irq, calls[irq]);
+ SCpnt->result = status | spp->target_status;
+ HD(j)->iocount++;
-#if defined (DEBUG_STATISTICS)
- if ((calls[irq] % 100000) == 10000)
- for (j = 0; sh[j] != NULL; j++)
- printk("%s: ihdlr, calls %d, count %d, multi %d.\n", BN(j),
- calls[(sh[j]->irq)], HD(j)->iocount, HD(j)->multicount);
+#if defined (DEBUG_INTERRUPT)
+ if (SCpnt->result || do_trace)
+#else
+ if ((spp->adapter_status != ASOK && HD(j)->iocount > 1000) ||
+ (spp->adapter_status != ASOK &&
+ spp->adapter_status != ASST && HD(j)->iocount <= 1000) ||
+ do_trace || msg_byte(spp->target_status))
#endif
+ printk("%s: ihdlr, mbox %2d, err 0x%x:%x,"\
+ " target %d.%d:%d, pid %ld, reg 0x%x, count %d.\n",
+ BN(j), i, spp->adapter_status, spp->target_status,
+ SCpnt->channel, SCpnt->target, SCpnt->lun, SCpnt->pid,
+ reg, HD(j)->iocount);
+
+ /* Set the command state to inactive */
+ SCpnt->host_scribble = NULL;
+
+ SCpnt->scsi_done(SCpnt);
+
+ if (do_trace) printk("%s: ihdlr, exit, irq %d, count %d.\n", BN(j), irq,
+ HD(j)->iocount);
- restore_flags(flags);
return;
}
@@ -1664,7 +1625,7 @@
for (i = 0; i < sh[j]->can_queue; i++)
if ((&HD(j)->cp[i])->sglist) kfree((&HD(j)->cp[i])->sglist);
- if (! --irqlist[sh[j]->irq]) free_irq(sh[j]->irq, NULL);
+ free_irq(sh[j]->irq, &sha[j]);
if (sh[j]->dma_channel != NO_DMA) free_dma(sh[j]->dma_channel);
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov