patch-2.0.27 linux/drivers/scsi/u14-34f.c
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- Lines: 386
- Date:
Sat Nov 23 15:28:23 1996
- Orig file:
v2.0.26/linux/drivers/scsi/u14-34f.c
- Orig date:
Fri Nov 22 16:26:04 1996
diff -u --recursive --new-file v2.0.26/linux/drivers/scsi/u14-34f.c linux/drivers/scsi/u14-34f.c
@@ -1,6 +1,12 @@
/*
* u14-34f.c - Low-level driver for UltraStor 14F/34F SCSI host adapters.
*
+ * 21 Nov 1996 rev. 2.30 for linux 2.1.11 and 2.0.25
+ * The list of i/o ports to be probed can be overwritten by the
+ * "u14-34f=port0, port1,...." boot command line option.
+ * Scatter/gather lists are now allocated by a number of kmalloc
+ * calls, in order to avoid the previous size limit of 64Kb.
+ *
* 16 Nov 1996 rev. 2.20 for linux 2.1.10 and 2.0.25
* Added multichannel support.
*
@@ -74,6 +80,11 @@
*
* Copyright (C) 1994, 1995, 1996 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
+ * code retain the above copyright notice and this comment without
+ * modification.
+ *
* WARNING: if your 14/34F board has an old firmware revision (see below)
* you must change "#undef" into "#define" in the following
* statement.
@@ -149,6 +160,15 @@
* the latest firmware prom is 28008-006. Older firmware 28008-005 has
* problems when using more then 16 scatter/gather lists.
*
+ * The list of i/o ports to be probed can be totally replaced by the
+ * boot command line option: "u14-34f=port0, port1, port2,...", where the
+ * port0, port1... arguments are ISA/VESA addresses to be probed.
+ * For example using "u14-34f=0x230, 0x340", the driver probes only the two
+ * addresses 0x230 and 0x340 in this order; "u14-34f=0" totally disables
+ * this driver.
+ *
+ * The boards are named Ux4F0, Ux4F1,... according to the detection order.
+ *
* In order to support multiple ISA boards in a reliable way,
* the driver sets host->wish_block = TRUE for all ISA boards.
*/
@@ -205,11 +225,15 @@
#undef DEBUG_STATISTICS
#undef DEBUG_RESET
+#define MAX_ISA 3
+#define MAX_VESA 1
+#define MAX_EISA 0
+#define MAX_PCI 0
+#define MAX_BOARDS (MAX_ISA + MAX_VESA + MAX_EISA + MAX_PCI)
#define MAX_CHANNEL 1
#define MAX_LUN 8
#define MAX_TARGET 8
#define MAX_IRQ 16
-#define MAX_BOARDS 4
#define MAX_MAILBOXES 16
#define MAX_SGLIST 32
#define MAX_SAFE_SGLIST 16
@@ -223,7 +247,6 @@
#define LOCKED 2
#define IN_RESET 3
#define IGNORE 4
-#define NO_IRQ 0xff
#define NO_DMA 0xff
#define MAXLOOP 200000
@@ -251,6 +274,11 @@
#define PACKED __attribute__((packed))
+struct sg_list {
+ unsigned int address; /* Segment Address */
+ unsigned int num_bytes; /* Segment Length */
+ };
+
/* MailBox SCSI Command Packet */
struct mscp {
unsigned char opcode: 3; /* type of command */
@@ -272,15 +300,9 @@
unsigned char adapter_status; /* non-zero indicates HA error */
unsigned char target_status; /* non-zero indicates target error */
unsigned int sense_addr PACKED;
-
Scsi_Cmnd *SCpnt;
-
- struct sg_list {
- unsigned int address; /* Segment Address */
- unsigned int num_bytes; /* Segment Length */
- } sglist[MAX_SGLIST];
-
- unsigned int index; /* cp index */
+ unsigned int index; /* cp index */
+ struct sg_list *sglist;
};
struct hostdata {
@@ -309,6 +331,13 @@
static const char *driver_name = "Ux4F";
static unsigned int irqlist[MAX_IRQ], calls[MAX_IRQ];
+static unsigned int io_port[] = {
+ 0x330, 0x340, 0x230, 0x240, 0x210, 0x130, 0x140,
+
+ /* End of list */
+ 0x0
+ };
+
#define HD(board) ((struct hostdata *) &sh[board]->hostdata)
#define BN(board) (HD(board)->board_name)
@@ -328,6 +357,7 @@
static void u14_34f_interrupt_handler(int, void *, struct pt_regs *);
static int do_trace = FALSE;
+static int setup_done = FALSE;
static inline int wait_on_busy(unsigned int iobase) {
unsigned int loop = MAXLOOP;
@@ -381,9 +411,9 @@
return FALSE;
}
-static inline int port_detect(unsigned int *port_base, unsigned int j,
- Scsi_Host_Template *tpnt) {
- unsigned char irq, dma_channel, subversion, c;
+static inline int port_detect(unsigned int port_base, unsigned int j,
+ Scsi_Host_Template *tpnt) {
+ unsigned char irq, dma_channel, subversion, i;
unsigned char in_byte;
/* Allowed BIOS base addresses (NULL indicates reserved) */
@@ -425,28 +455,27 @@
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);
+ if(check_region(port_base, REGION_SIZE)) {
+ printk("%s: address 0x%03x in use, skipping probe.\n", name, port_base);
return FALSE;
}
- if (inb(*port_base + REG_PRODUCT_ID1) != PRODUCT_ID1) return FALSE;
+ if (inb(port_base + REG_PRODUCT_ID1) != PRODUCT_ID1) return FALSE;
- in_byte = inb(*port_base + REG_PRODUCT_ID2);
+ in_byte = inb(port_base + REG_PRODUCT_ID2);
if ((in_byte & 0xf0) != PRODUCT_ID2) return FALSE;
- *(char *)&config_1 = inb(*port_base + REG_CONFIG1);
- *(char *)&config_2 = inb(*port_base + REG_CONFIG2);
+ *(char *)&config_1 = inb(port_base + REG_CONFIG1);
+ *(char *)&config_2 = inb(port_base + REG_CONFIG2);
irq = interrupt_table[config_1.interrupt];
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] == NO_IRQ) && request_irq
- (irq, u14_34f_interrupt_handler, SA_INTERRUPT, driver_name, NULL))) {
+ if ((irq >= MAX_IRQ) || (!irqlist[irq] && request_irq(irq,
+ u14_34f_interrupt_handler, SA_INTERRUPT, driver_name, NULL))) {
printk("%s: unable to allocate IRQ %u, detaching.\n", name, irq);
return FALSE;
}
@@ -463,15 +492,15 @@
if (sh[j] == NULL) {
printk("%s: unable to register host, detaching.\n", name);
- if (irqlist[irq] == NO_IRQ) free_irq(irq, NULL);
+ if (!irqlist[irq]) free_irq(irq, NULL);
if (subversion == ISA) free_dma(dma_channel);
return FALSE;
}
- sh[j]->io_port = *port_base;
- sh[j]->unique_id = *port_base;
+ sh[j]->io_port = port_base;
+ sh[j]->unique_id = port_base;
sh[j]->n_io_port = REGION_SIZE;
sh[j]->base = bios_segment_table[config_1.bios_segment];
sh[j]->irq = irq;
@@ -494,14 +523,14 @@
if (sh[j]->base == 0) outb(CMD_ENA_INTR, sh[j]->io_port + REG_SYS_MASK);
/* Register the I/O space that we use */
- request_region(sh[j]->io_port, REGION_SIZE, driver_name);
+ request_region(sh[j]->io_port, sh[j]->n_io_port, driver_name);
memset(HD(j), 0, sizeof(struct hostdata));
HD(j)->heads = mapping_table[config_2.mapping_mode].heads;
HD(j)->sectors = mapping_table[config_2.mapping_mode].sectors;
HD(j)->subversion = subversion;
HD(j)->board_number = j;
- irqlist[irq] = j;
+ irqlist[irq]++;
if (HD(j)->subversion == ESA) {
@@ -546,6 +575,15 @@
}
}
+ for (i = 0; i < sh[j]->can_queue; i++)
+ if (! ((&HD(j)->cp[i])->sglist = kmalloc(
+ sh[j]->sg_tablesize * sizeof(struct sg_list),
+ (sh[j]->unchecked_isa_dma ? GFP_DMA : 0) | GFP_ATOMIC))) {
+ printk("%s: kmalloc SGlist failed, mbox %d, detaching.\n", BN(j), i);
+ u14_34f_release(sh[j]);
+ return FALSE;
+ }
+
printk("%s: PORT 0x%03x, BIOS 0x%05x, IRQ %u, DMA %u, SG %d, "\
"Mbox %d, CmdLun %d, C%d.\n", BN(j), sh[j]->io_port,
(int)sh[j]->base, sh[j]->irq, sh[j]->dma_channel,
@@ -556,21 +594,30 @@
printk("%s: wide SCSI support enabled, max_id %u, max_lun %u.\n",
BN(j), sh[j]->max_id, sh[j]->max_lun);
- for (c = 0; c <= sh[j]->max_channel; c++)
+ for (i = 0; i <= sh[j]->max_channel; i++)
printk("%s: SCSI channel %u enabled, host target ID %u.\n",
- BN(j), c, sh[j]->this_id);
+ BN(j), i, sh[j]->this_id);
return TRUE;
}
-int u14_34f_detect(Scsi_Host_Template *tpnt) {
- unsigned int j = 0, k, flags;
+void u14_34f_setup(char *str, int *ints) {
+ int i, argc = ints[0];
- unsigned int io_port[] = {
- 0x330, 0x340, 0x230, 0x240, 0x210, 0x130, 0x140, 0x0
- };
+ if (argc <= 0) return;
- unsigned int *port_base = io_port;
+ if (argc > MAX_BOARDS) argc = MAX_BOARDS;
+
+ for (i = 0; i < argc; i++) io_port[i] = ints[i + 1];
+
+ io_port[i] = 0;
+ setup_done = TRUE;
+ return;
+}
+
+int u14_34f_detect(Scsi_Host_Template *tpnt) {
+ unsigned long flags;
+ unsigned int j = 0, k;
tpnt->proc_dir = &proc_scsi_u14_34f;
@@ -578,18 +625,14 @@
cli();
for (k = 0; k < MAX_IRQ; k++) {
- irqlist[k] = NO_IRQ;
+ irqlist[k] = 0;
calls[k] = 0;
}
for (k = 0; k < MAX_BOARDS + 1; k++) sh[k] = NULL;
- while (*port_base) {
-
- if (j < MAX_BOARDS && port_detect(port_base, j, tpnt)) j++;
-
- port_base++;
- }
+ for (k = 0; io_port[k]; k++)
+ if (j < MAX_BOARDS && port_detect(io_port[k], j, tpnt)) j++;
if (j > 0)
printk("UltraStor 14F/34F: Copyright (C) 1994, 1995, 1996 Dario Ballabio.\n");
@@ -616,7 +659,8 @@
}
int u14_34f_queuecommand(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) {
- unsigned int i, j, k, flags;
+ unsigned long flags;
+ unsigned int i, j, k;
struct mscp *cpp;
static const unsigned char data_out_cmds[] = {
@@ -666,7 +710,7 @@
/* Set pointer to control packet structure */
cpp = &HD(j)->cp[i];
- memset(cpp, 0, sizeof(struct mscp));
+ memset(cpp, 0, sizeof(struct mscp) - sizeof(struct sg_list *));
SCpnt->scsi_done = done;
cpp->index = i;
SCpnt->host_scribble = (unsigned char *) &cpp->index;
@@ -726,7 +770,8 @@
}
int u14_34f_abort(Scsi_Cmnd *SCarg) {
- unsigned int i, j, flags;
+ unsigned long flags;
+ unsigned int i, j;
save_flags(flags);
cli();
@@ -765,6 +810,9 @@
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);
+
restore_flags(flags);
return SCSI_ABORT_SNOOZE;
}
@@ -785,7 +833,8 @@
}
int u14_34f_reset(Scsi_Cmnd *SCarg, unsigned int reset_flags) {
- unsigned int i, j, flags, time, k, c, limit = 0;
+ unsigned long flags;
+ unsigned int i, j, time, k, c, limit = 0;
int arg_done = FALSE;
Scsi_Cmnd *SCpnt;
@@ -909,19 +958,20 @@
dkinfo[0] = HD(j)->heads;
dkinfo[1] = HD(j)->sectors;
dkinfo[2] = size / (HD(j)->heads * HD(j)->sectors);
- return 0;
+ return FALSE;
}
static void u14_34f_interrupt_handler(int irq, void *dev_id,
struct pt_regs *regs) {
Scsi_Cmnd *SCpnt;
- unsigned int i, j, k, c, flags, status, tstatus, loops, total_loops = 0;
+ unsigned long flags;
+ unsigned int i, j, k, c, status, tstatus, loops, total_loops = 0;
struct mscp *spp;
save_flags(flags);
cli();
- if (irqlist[irq] == NO_IRQ) {
+ if (!irqlist[irq]) {
printk("%s, ihdlr, irq %d, unexpected interrupt.\n", driver_name, irq);
restore_flags(flags);
return;
@@ -1122,6 +1172,31 @@
restore_flags(flags);
return;
+}
+
+int u14_34f_release(struct Scsi_Host *shpnt) {
+ unsigned long flags;
+ unsigned int i, j;
+
+ save_flags(flags);
+ cli();
+
+ for (j = 0; sh[j] != NULL && sh[j] != shpnt; j++);
+
+ if (sh[j] == NULL) panic("%s: release, invalid Scsi_Host pointer.\n",
+ driver_name);
+
+ 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);
+
+ if (sh[j]->dma_channel != NO_DMA) free_dma(sh[j]->dma_channel);
+
+ release_region(sh[j]->io_port, sh[j]->n_io_port);
+ scsi_unregister(sh[j]);
+ restore_flags(flags);
+ return FALSE;
}
#if defined(MODULE)
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