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Commit c7a4e6c2 authored by Alan Cox's avatar Alan Cox Committed by Linus Torvalds
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[PATCH] resurrect the NCR53c406a

parent ec765df5
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Showing with 777 additions and 806 deletions
drivers/scsi/NCR53c406a.c
View file @ c7a4e6c2
......@@ -26,9 +26,9 @@
#define USE_PIO 1
#define USE_BIOS 0
/* #define BIOS_ADDR 0xD8000 */ /* define this if autoprobe fails */
/* #define PORT_BASE 0x330 */ /* define this if autoprobe fails */
/* #define IRQ_LEV 0 */ /* define this if autoprobe fails */
/* #define BIOS_ADDR 0xD8000 *//* define this if autoprobe fails */
/* #define PORT_BASE 0x330 *//* define this if autoprobe fails */
/* #define IRQ_LEV 0 *//* define this if autoprobe fails */
#define DMA_CHAN 5 /* this is ignored if DMA is disabled */
/* Set this to 0 if you encounter kernel lockups while transferring
......@@ -196,7 +196,7 @@ static int port_base;
#if IRQ_LEV
static int irq_level = IRQ_LEV;
#else
static int irq_level = -1; /* 0 is 'no irq', so use -1 for 'uninitialized'*/
static int irq_level = -1; /* 0 is 'no irq', so use -1 for 'uninitialized' */
#endif
#if USE_DMA
......@@ -217,15 +217,14 @@ static char info_msg[256];
/* possible BIOS locations */
#if USE_BIOS
static void *addresses[] = {
(void *)0xd8000,
(void *)0xc8000
(void *) 0xd8000,
(void *) 0xc8000
};
#define ADDRESS_COUNT (sizeof( addresses ) / sizeof( unsigned ))
#endif /* USE_BIOS */
/* possible i/o port addresses */
static unsigned short ports[] =
{ 0x230, 0x330, 0x280, 0x290, 0x330, 0x340, 0x300, 0x310, 0x348, 0x350 };
static unsigned short ports[] = { 0x230, 0x330, 0x280, 0x290, 0x330, 0x340, 0x300, 0x310, 0x348, 0x350 };
#define PORT_COUNT (sizeof( ports ) / sizeof( unsigned short ))
/* possible interrupt channels */
......@@ -241,8 +240,9 @@ struct signature {
} signatures[] __initdata = {
/* 1 2 3 4 5 6 */
/* 123456789012345678901234567890123456789012345678901234567890 */
{ "Copyright (C) Acculogic, Inc.\r\n2.8M Diskette Extension Bios ver 4.04.03 03/01/1993", 61, 82 },
};
{
"Copyright (C) Acculogic, Inc.\r\n2.8M Diskette Extension Bios ver 4.04.03 03/01/1993", 61, 82},};
#define SIGNATURE_COUNT (sizeof( signatures ) / sizeof( struct signature ))
#endif /* USE_BIOS */
......@@ -263,57 +263,56 @@ static int FIFO_FLAGS; /* indicates # of bytes in fifo */
static int SYNCOFF; /* synchronous offset register */
static int CONFIG1; /* configuration register */
static int CLKCONV; /* clock conversion reg */
/*static int TESTREG;*/ /* test mode register */
/*static int TESTREG;*//* test mode register */
static int CONFIG2; /* Configuration 2 Register */
static int CONFIG3; /* Configuration 3 Register */
static int CONFIG4; /* Configuration 4 Register */
static int TC_HIGH; /* Transfer Counter High */
/*static int FIFO_BOTTOM;*/ /* Reserve FIFO byte register */
/*static int FIFO_BOTTOM;*//* Reserve FIFO byte register */
/* Control Register Set 1 */
/*static int JUMPER_SENSE;*/ /* Jumper sense port reg (r/w) */
/*static int SRAM_PTR;*/ /* SRAM address pointer reg (r/w) */
/*static int SRAM_DATA;*/ /* SRAM data register (r/w) */
/*static int JUMPER_SENSE;*//* Jumper sense port reg (r/w) */
/*static int SRAM_PTR;*//* SRAM address pointer reg (r/w) */
/*static int SRAM_DATA;*//* SRAM data register (r/w) */
static int PIO_FIFO; /* PIO FIFO registers (r/w) */
/*static int PIO_FIFO1;*/ /* */
/*static int PIO_FIFO2;*/ /* */
/*static int PIO_FIFO3;*/ /* */
/*static int PIO_FIFO1;*//* */
/*static int PIO_FIFO2;*//* */
/*static int PIO_FIFO3;*//* */
static int PIO_STATUS; /* PIO status (r/w) */
/*static int ATA_CMD;*/ /* ATA command/status reg (r/w) */
/*static int ATA_ERR;*/ /* ATA features/error register (r/w)*/
/*static int ATA_CMD;*//* ATA command/status reg (r/w) */
/*static int ATA_ERR;*//* ATA features/error register (r/w) */
static int PIO_FLAG; /* PIO flag interrupt enable (r/w) */
static int CONFIG5; /* Configuration 5 register (r/w) */
/*static int SIGNATURE;*/ /* Signature Register (r) */
/*static int CONFIG6;*/ /* Configuration 6 register (r) */
/*static int SIGNATURE;*//* Signature Register (r) */
/*static int CONFIG6;*//* Configuration 6 register (r) */
/* ============================================================== */
#if USE_DMA
static __inline__ int
NCR53c406a_dma_setup (unsigned char *ptr,
unsigned int count,
unsigned char mode) {
static __inline__ int NCR53c406a_dma_setup(unsigned char *ptr, unsigned int count, unsigned char mode)
{
unsigned limit;
unsigned long flags = 0;
VDEB(printk("dma: before count=%d ", count));
if (dma_chan <=3) {
if (dma_chan <= 3) {
if (count > 65536)
count = 65536;
limit = 65536 - (((unsigned) ptr) & 0xFFFF);
} else {
if (count > (65536<<1))
count = (65536<<1);
limit = (65536<<1) - (((unsigned) ptr) & 0x1FFFF);
if (count > (65536 << 1))
count = (65536 << 1);
limit = (65536 << 1) - (((unsigned) ptr) & 0x1FFFF);
}
if (count > limit) count = limit;
if (count > limit)
count = limit;
VDEB(printk("after count=%d\n", count));
if ((count & 1) || (((unsigned) ptr) & 1))
panic ("NCR53c406a: attempted unaligned DMA transfer\n");
panic("NCR53c406a: attempted unaligned DMA transfer\n");
flags=claim_dma_lock();
flags = claim_dma_lock();
disable_dma(dma_chan);
clear_dma_ff(dma_chan);
set_dma_addr(dma_chan, (long) ptr);
......@@ -325,22 +324,22 @@ NCR53c406a_dma_setup (unsigned char *ptr,
return count;
}
static __inline__ int
NCR53c406a_dma_write(unsigned char *src, unsigned int count) {
return NCR53c406a_dma_setup (src, count, DMA_MODE_WRITE);
static __inline__ int NCR53c406a_dma_write(unsigned char *src, unsigned int count)
{
return NCR53c406a_dma_setup(src, count, DMA_MODE_WRITE);
}
static __inline__ int
NCR53c406a_dma_read(unsigned char *src, unsigned int count) {
return NCR53c406a_dma_setup (src, count, DMA_MODE_READ);
static __inline__ int NCR53c406a_dma_read(unsigned char *src, unsigned int count)
{
return NCR53c406a_dma_setup(src, count, DMA_MODE_READ);
}
static __inline__ int
NCR53c406a_dma_residual (void) {
static __inline__ int NCR53c406a_dma_residual(void)
{
register int tmp;
unsigned long flags;
flags=claim_dma_lock();
flags = claim_dma_lock();
clear_dma_ff(dma_chan);
tmp = get_dma_residue(dma_chan);
release_dma_lock(flags);
......@@ -350,12 +349,10 @@ NCR53c406a_dma_residual (void) {
#endif /* USE_DMA */
#if USE_PIO
static __inline__ int NCR53c406a_pio_read(unsigned char *request,
unsigned int reqlen)
static __inline__ int NCR53c406a_pio_read(unsigned char *request, unsigned int reqlen)
{
int i;
int len; /* current scsi fifo size */
unsigned long flags = 0;
REG1;
while (reqlen) {
......@@ -364,18 +361,23 @@ static __inline__ int NCR53c406a_pio_read(unsigned char *request,
if (i & 0x80)
return 0;
switch( i & 0x1e ) {
switch (i & 0x1e) {
default:
case 0x10:
len=0; break;
len = 0;
break;
case 0x0:
len=1; break;
len = 1;
break;
case 0x8:
len=42; break;
len = 42;
break;
case 0xc:
len=84; break;
len = 84;
break;
case 0xe:
len=128; break;
len = 128;
break;
}
if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */
......@@ -383,82 +385,77 @@ static __inline__ int NCR53c406a_pio_read(unsigned char *request,
}
if (len) {
if( len > reqlen )
if (len > reqlen)
len = reqlen;
save_flags(flags);
cli();
if( fast_pio && len > 3 ) {
insl(PIO_FIFO,request,len>>2);
if (fast_pio && len > 3) {
insl(PIO_FIFO, request, len >> 2);
request += len & 0xfc;
reqlen -= len & 0xfc;
}
else {
while(len--) {
} else {
while (len--) {
*request++ = inb(PIO_FIFO);
reqlen--;
}
}
restore_flags(flags);
}
}
return 0;
}
static __inline__ int NCR53c406a_pio_write(unsigned char *request,
unsigned int reqlen)
static __inline__ int NCR53c406a_pio_write(unsigned char *request, unsigned int reqlen)
{
int i = 0;
int len; /* current scsi fifo size */
unsigned long flags = 0;
REG1;
while (reqlen && !(i&0x40)) {
while (reqlen && !(i & 0x40)) {
i = inb(PIO_STATUS);
/* VDEB(printk("pio_status=%x\n", i)); */
if (i & 0x80) /* error */
return 0;
switch( i & 0x1e ) {
switch (i & 0x1e) {
case 0x10:
len=128; break;
len = 128;
break;
case 0x0:
len=84; break;
len = 84;
break;
case 0x8:
len=42; break;
len = 42;
break;
case 0xc:
len=1; break;
len = 1;
break;
default:
case 0xe:
len=0; break;
len = 0;
break;
}
if (len) {
if( len > reqlen )
if (len > reqlen)
len = reqlen;
save_flags(flags);
cli();
if( fast_pio && len > 3 ) {
outsl(PIO_FIFO,request,len>>2);
if (fast_pio && len > 3) {
outsl(PIO_FIFO, request, len >> 2);
request += len & 0xfc;
reqlen -= len & 0xfc;
}
else {
while(len--) {
} else {
while (len--) {
outb(*request++, PIO_FIFO);
reqlen--;
}
}
restore_flags(flags);
}
}
return 0;
}
#endif /* USE_PIO */
int __init
NCR53c406a_detect(Scsi_Host_Template * tpnt){
static int __init NCR53c406a_detect(Scsi_Host_Template * tpnt)
{
struct Scsi_Host *shpnt = NULL;
#ifndef PORT_BASE
int i;
......@@ -468,19 +465,18 @@ NCR53c406a_detect(Scsi_Host_Template * tpnt){
int ii, jj;
bios_base = 0;
/* look for a valid signature */
for( ii=0; ii < ADDRESS_COUNT && !bios_base; ii++)
for( jj=0; (jj < SIGNATURE_COUNT) && !bios_base; jj++)
if(!memcmp((void *) addresses[ii]+signatures[jj].sig_offset,
(void *) signatures[jj].signature,
(int) signatures[jj].sig_length))
bios_base=addresses[ii];
if(!bios_base){
for (ii = 0; ii < ADDRESS_COUNT && !bios_base; ii++)
for (jj = 0; (jj < SIGNATURE_COUNT) && !bios_base; jj++)
if (!memcmp((void *) addresses[ii] + signatures[jj].sig_offset, (void *) signatures[jj].signature, (int) signatures[jj].sig_length))
bios_base = addresses[ii];
if (!bios_base) {
printk("NCR53c406a: BIOS signature not found\n");
return 0;
}
DEB(printk("NCR53c406a BIOS found at %X\n", (unsigned int) bios_base););
DEB(printk("NCR53c406a BIOS found at %X\n", (unsigned int) bios_base);
);
#endif /* USE_BIOS */
#ifdef PORT_BASE
......@@ -491,18 +487,14 @@ NCR53c406a_detect(Scsi_Host_Template * tpnt){
if (port_base) { /* LILO override */
if (!request_region(port_base, 0x10, "NCR53c406a"))
port_base = 0;
}
else {
for(i=0; i<PORT_COUNT && !port_base; i++){
if(!request_region(ports[i], 0x10, "NCR53c406a")){
} else {
for (i = 0; i < PORT_COUNT && !port_base; i++) {
if (!request_region(ports[i], 0x10, "NCR53c406a")) {
DEB(printk("NCR53c406a: port %x in use\n", ports[i]));
}
else {
} else {
VDEB(printk("NCR53c406a: port %x available\n", ports[i]));
outb(C5_IMG, ports[i] + 0x0d); /* reg set 1 */
if( (inb(ports[i] + 0x0e) ^ inb(ports[i] + 0x0e)) == 7
&& (inb(ports[i] + 0x0e) ^ inb(ports[i] + 0x0e)) == 7
&& (inb(ports[i] + 0x0e) & 0xf8) == 0x58 ) {
if ((inb(ports[i] + 0x0e) ^ inb(ports[i] + 0x0e)) == 7 && (inb(ports[i] + 0x0e) ^ inb(ports[i] + 0x0e)) == 7 && (inb(ports[i] + 0x0e) & 0xf8) == 0x58) {
port_base = ports[i];
VDEB(printk("NCR53c406a: Sig register valid\n"));
VDEB(printk("port_base=%x\n", port_base));
......@@ -514,7 +506,7 @@ NCR53c406a_detect(Scsi_Host_Template * tpnt){
}
#endif /* PORT_BASE */
if(!port_base){ /* no ports found */
if (!port_base) { /* no ports found */
printk("NCR53c406a: no available ports found\n");
return 0;
}
......@@ -525,8 +517,8 @@ NCR53c406a_detect(Scsi_Host_Template * tpnt){
chip_init();
#ifndef IRQ_LEV
if (irq_level < 0) { /* LILO override if >= 0*/
irq_level=irq_probe();
if (irq_level < 0) { /* LILO override if >= 0 */
irq_level = irq_probe();
if (irq_level < 0) { /* Trouble */
printk("NCR53c406a: IRQ problem, irq_level=%d, giving up\n", irq_level);
goto err_release;
......@@ -545,30 +537,28 @@ NCR53c406a_detect(Scsi_Host_Template * tpnt){
goto err_release;
}
if(irq_level > 0) {
if(request_irq(irq_level, do_NCR53c406a_intr, 0, "NCR53c406a", shpnt)){
if (irq_level > 0) {
if (request_irq(irq_level, do_NCR53c406a_intr, 0, "NCR53c406a", shpnt)) {
printk("NCR53c406a: unable to allocate IRQ %d\n", irq_level);
goto err_free_scsi;
}
tpnt->can_queue = 1;
DEB(printk("NCR53c406a: allocated IRQ %d\n", irq_level));
}
else if (irq_level == 0) {
} else if (irq_level == 0) {
tpnt->can_queue = 0;
DEB(printk("NCR53c406a: No interrupts detected\n"));
#if USE_DMA
printk("NCR53c406a: No interrupts found and DMA mode defined. Giving up.\n");
goto err_free_scsi;
#endif /* USE_DMA */
}
else {
} else {
DEB(printk("NCR53c406a: Shouldn't get here!\n"));
goto err_free_scsi;
}
#if USE_DMA
dma_chan = DMA_CHAN;
if(request_dma(dma_chan, "NCR53c406a") != 0){
if (request_dma(dma_chan, "NCR53c406a") != 0) {
printk("NCR53c406a: unable to allocate DMA channel %d\n", dma_chan);
goto err_free_irq;
}
......@@ -584,18 +574,16 @@ NCR53c406a_detect(Scsi_Host_Template * tpnt){
#endif
#if USE_DMA
sprintf(info_msg, "NCR53c406a at 0x%x, IRQ %d, DMA channel %d.",
port_base, irq_level, dma_chan);
sprintf(info_msg, "NCR53c406a at 0x%x, IRQ %d, DMA channel %d.", port_base, irq_level, dma_chan);
#else
sprintf(info_msg, "NCR53c406a at 0x%x, IRQ %d, %s PIO mode.",
port_base, irq_level, fast_pio ? "fast" : "slow");
sprintf(info_msg, "NCR53c406a at 0x%x, IRQ %d, %s PIO mode.", port_base, irq_level, fast_pio ? "fast" : "slow");
#endif
return (tpnt->present);
#if USE_DMA
err_free_irq:
if(irq_level)
if (irq_level)
free_irq(irq_level, shpnt);
#endif
err_free_scsi:
......@@ -606,12 +594,13 @@ NCR53c406a_detect(Scsi_Host_Template * tpnt){
}
/* called from init/main.c */
void __init NCR53c406a_setup(char *str, int *ints)
static void __init NCR53c406a_setup(char *str, int *ints)
{
static size_t setup_idx = 0;
size_t i;
DEB(printk("NCR53c406a: Setup called\n"););
DEB(printk("NCR53c406a: Setup called\n");
);
if (setup_idx >= PORT_COUNT - 1) {
printk("NCR53c406a: Setup called too many times. Bad LILO params?\n");
......@@ -625,7 +614,8 @@ void __init NCR53c406a_setup(char *str, int *ints)
for (i = 0; i < PORT_COUNT && !port_base; i++)
if (ports[i] == ints[1]) {
port_base = ints[1];
DEB(printk("NCR53c406a: Specified port_base 0x%X\n", port_base);)
DEB(printk("NCR53c406a: Specified port_base 0x%X\n", port_base);
)
}
if (!port_base) {
printk("NCR53c406a: Invalid PORTBASE 0x%X specified\n", ints[1]);
......@@ -635,13 +625,14 @@ void __init NCR53c406a_setup(char *str, int *ints)
if (ints[0] > 1) {
if (ints[2] == 0) {
irq_level = 0;
DEB(printk("NCR53c406a: Specified irq %d\n", irq_level);)
}
else
DEB(printk("NCR53c406a: Specified irq %d\n", irq_level);
)
} else
for (i = 0; i < INTR_COUNT && irq_level < 0; i++)
if (intrs[i] == ints[2]) {
irq_level = ints[2];
DEB(printk("NCR53c406a: Specified irq %d\n", port_base);)
DEB(printk("NCR53c406a: Specified irq %d\n", port_base);
)
}
if (irq_level < 0)
printk("NCR53c406a: Invalid IRQ %d specified\n", ints[2]);
......@@ -650,29 +641,34 @@ void __init NCR53c406a_setup(char *str, int *ints)
if (ints[0] > 2)
fast_pio = ints[3];
DEB(printk("NCR53c406a: port_base=0x%X, irq=%d, fast_pio=%d\n",
port_base, irq_level, fast_pio);)
DEB(printk("NCR53c406a: port_base=0x%X, irq=%d, fast_pio=%d\n", port_base, irq_level, fast_pio);)
}
const char*
NCR53c406a_info(struct Scsi_Host *SChost){
__setup("ncr53c406a=", NCR53c406a_setup);
static const char *NCR53c406a_info(struct Scsi_Host *SChost)
{
DEB(printk("NCR53c406a_info called\n"));
return (info_msg);
}
static void internal_done(Scsi_Cmnd *SCpnt) {
static void internal_done(Scsi_Cmnd * SCpnt)
{
internal_done_errcode = SCpnt->result;
++internal_done_flag;
}
static void wait_intr(void) {
static void wait_intr(void)
{
int i = jiffies + WATCHDOG;
while(time_after(i,jiffies) && !(inb(STAT_REG)&0xe0)) /* wait for a pseudo-interrupt */
while (time_after(i, jiffies) && !(inb(STAT_REG) & 0xe0)) { /* wait for a pseudo-interrupt */
cpu_relax();
barrier();
}
if (time_before_eq(i,jiffies)) { /* Timed out */
if (time_before_eq(i, jiffies)) { /* Timed out */
rtrc(0);
current_SC->result = DID_TIME_OUT << 16;
current_SC->SCp.phase = idle;
......@@ -683,11 +679,13 @@ static void wait_intr(void) {
NCR53c406a_intr(0, NULL, NULL);
}
int NCR53c406a_command(Scsi_Cmnd *SCpnt){
static int NCR53c406a_command(Scsi_Cmnd * SCpnt)
{
DEB(printk("NCR53c406a_command called\n"));
NCR53c406a_queue(SCpnt, internal_done);
if(irq_level)
while (!internal_done_flag);
if (irq_level)
while (!internal_done_flag)
cpu_relax();
else /* interrupts not supported */
while (!internal_done_flag)
wait_intr();
......@@ -697,21 +695,15 @@ int NCR53c406a_command(Scsi_Cmnd *SCpnt){
}
int
NCR53c406a_queue(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)){
static int NCR53c406a_queue(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
{
int i;
unsigned long flags = 0;
VDEB(printk("NCR53c406a_queue called\n"));
DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n",
SCpnt->cmnd[0],
SCpnt->cmd_len,
SCpnt->target,
SCpnt->lun,
SCpnt->request_bufflen));
DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n", SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->target, SCpnt->lun, SCpnt->request_bufflen));
#if 0
VDEB(for(i=0; i<SCpnt->cmd_len; i++)
VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i]));
VDEB(printk("\n"));
#endif
......@@ -722,30 +714,28 @@ NCR53c406a_queue(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)){
current_SC->SCp.Status = 0;
current_SC->SCp.Message = 0;
save_flags(flags);
cli();
/* We are locked here already by the mid layer */
REG0;
outb(SCpnt->target, DEST_ID); /* set destination */
outb(FLUSH_FIFO, CMD_REG); /* reset the fifos */
for(i=0; i<SCpnt->cmd_len; i++){
for (i = 0; i < SCpnt->cmd_len; i++) {
outb(SCpnt->cmnd[i], SCSI_FIFO);
}
outb(SELECT_NO_ATN, CMD_REG);
restore_flags(flags);
rtrc(1);
return 0;
}
int
NCR53c406a_abort(Scsi_Cmnd *SCpnt){
static int NCR53c406a_abort(Scsi_Cmnd * SCpnt)
{
DEB(printk("NCR53c406a_abort called\n"));
return SCSI_ABORT_SNOOZE; /* Don't know how to abort */
return FAILED; /* Don't know how to abort */
}
int
NCR53c406a_reset(Scsi_Cmnd *SCpnt, unsigned int ignored){
static int NCR53c406a_host_reset(Scsi_Cmnd * SCpnt)
{
DEB(printk("NCR53c406a_reset called\n"));
outb(C4_IMG, CONFIG4); /* Select reg set 0 */
outb(CHIP_RESET, CMD_REG);
......@@ -754,14 +744,21 @@ NCR53c406a_reset(Scsi_Cmnd *SCpnt, unsigned int ignored){
chip_init();
rtrc(2);
if (irq_level)
return SCSI_RESET_PENDING; /* should get an interrupt */
else
return SCSI_RESET_WAKEUP; /* won't get any interrupts */
return SUCCESS;
}
int
NCR53c406a_biosparm(Scsi_Disk *disk, struct block_device *dev, int* info_array){
static int NCR53c406a_device_reset(Scsi_Cmnd * SCpnt)
{
return FAILED;
}
static int NCR53c406a_bus_reset(Scsi_Cmnd * SCpnt)
{
return FAILED;
}
static int NCR53c406a_biosparm(Scsi_Disk * disk, struct block_device *dev, int *info_array)
{
int size;
DEB(printk("NCR53c406a_biosparm called\n"));
......@@ -769,31 +766,32 @@ NCR53c406a_biosparm(Scsi_Disk *disk, struct block_device *dev, int* info_array){
size = disk->capacity;
info_array[0] = 64; /* heads */
info_array[1] = 32; /* sectors */
info_array[2] = size>>11; /* cylinders */
info_array[2] = size >> 11; /* cylinders */
if (info_array[2] > 1024) { /* big disk */
info_array[0] = 255;
info_array[1] = 63;
info_array[2] = size / (255*63);
info_array[2] = size / (255 * 63);
}
return 0;
}
}
static void
do_NCR53c406a_intr(int unused, void *dev_id, struct pt_regs *regs){
static void do_NCR53c406a_intr(int unused, void *dev_id, struct pt_regs *regs)
{
unsigned long flags;
struct Scsi_Host * dev = dev_id;
struct Scsi_Host *dev = dev_id;
spin_lock_irqsave(dev->host_lock, flags);
NCR53c406a_intr(0, dev_id, regs);
spin_unlock_irqrestore(dev->host_lock, flags);
}
static void
NCR53c406a_intr(int unused, void *dev_id, struct pt_regs *regs){
DEB(unsigned char fifo_size;)
DEB(unsigned char seq_reg;)
static void NCR53c406a_intr(int unused, void *dev_id, struct pt_regs *regs)
{
DEB(unsigned char fifo_size;
)
DEB(unsigned char seq_reg;
)
unsigned char status, int_reg;
unsigned long flags = 0;
#if USE_PIO
unsigned char pio_status;
struct scatterlist *sglist;
......@@ -802,8 +800,6 @@ NCR53c406a_intr(int unused, void *dev_id, struct pt_regs *regs){
VDEB(printk("NCR53c406a_intr called\n"));
save_flags(flags);
cli();
#if USE_PIO
REG1;
pio_status = inb(PIO_STATUS);
......@@ -813,11 +809,9 @@ NCR53c406a_intr(int unused, void *dev_id, struct pt_regs *regs){
DEB(seq_reg = inb(SEQ_REG));
int_reg = inb(INT_REG);
DEB(fifo_size = inb(FIFO_FLAGS) & 0x1f);
restore_flags(flags);
#if NCR53C406A_DEBUG
printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x",
status, seq_reg, int_reg, fifo_size);
printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x", status, seq_reg, int_reg, fifo_size);
#if (USE_DMA)
printk("\n");
#else
......@@ -825,7 +819,7 @@ NCR53c406a_intr(int unused, void *dev_id, struct pt_regs *regs){
#endif /* USE_DMA */
#endif /* NCR53C406A_DEBUG */
if(int_reg & 0x80){ /* SCSI reset intr */
if (int_reg & 0x80) { /* SCSI reset intr */
rtrc(3);
DEB(printk("NCR53c406a: reset intr received\n"));
current_SC->SCp.phase = idle;
......@@ -833,9 +827,8 @@ NCR53c406a_intr(int unused, void *dev_id, struct pt_regs *regs){
current_SC->scsi_done(current_SC);
return;
}
#if USE_PIO
if(pio_status & 0x80) {
if (pio_status & 0x80) {
printk("NCR53C406A: Warning: PIO error!\n");
current_SC->SCp.phase = idle;
current_SC->result = DID_ERROR << 16;
......@@ -844,7 +837,7 @@ NCR53c406a_intr(int unused, void *dev_id, struct pt_regs *regs){
}
#endif /* USE_PIO */
if(status & 0x20) { /* Parity error */
if (status & 0x20) { /* Parity error */
printk("NCR53c406a: Warning: parity error!\n");
current_SC->SCp.phase = idle;
current_SC->result = DID_PARITY << 16;
......@@ -852,7 +845,7 @@ NCR53c406a_intr(int unused, void *dev_id, struct pt_regs *regs){
return;
}
if(status & 0x40) { /* Gross error */
if (status & 0x40) { /* Gross error */
printk("NCR53c406a: Warning: gross error!\n");
current_SC->SCp.phase = idle;
current_SC->result = DID_ERROR << 16;
......@@ -860,43 +853,40 @@ NCR53c406a_intr(int unused, void *dev_id, struct pt_regs *regs){
return;
}
if(int_reg & 0x20){ /* Disconnect */
if (int_reg & 0x20) { /* Disconnect */
DEB(printk("NCR53c406a: disconnect intr received\n"));
if(current_SC->SCp.phase != message_in){ /* Unexpected disconnect */
if (current_SC->SCp.phase != message_in) { /* Unexpected disconnect */
current_SC->result = DID_NO_CONNECT << 16;
}
else{ /* Command complete, return status and message */
} else { /* Command complete, return status and message */
current_SC->result = (current_SC->SCp.Status & 0xff)
| ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16);
}
rtrc(0);
current_SC->SCp.phase = idle;
current_SC->scsi_done( current_SC );
current_SC->scsi_done(current_SC);
return;
}
switch(status & 0x07){ /* scsi phase */
switch (status & 0x07) { /* scsi phase */
case 0x00: /* DATA-OUT */
if(int_reg & 0x10){ /* Target requesting info transfer */
if (int_reg & 0x10) { /* Target requesting info transfer */
rtrc(5);
current_SC->SCp.phase = data_out;
VDEB(printk("NCR53c406a: Data-Out phase\n"));
outb(FLUSH_FIFO, CMD_REG);
LOAD_DMA_COUNT(current_SC->request_bufflen); /* Max transfer size */
#if USE_DMA /* No s/g support for DMA */
NCR53c406a_dma_write(current_SC->request_buffer,
current_SC->request_bufflen);
NCR53c406a_dma_write(current_SC->request_buffer, current_SC->request_bufflen);
#endif /* USE_DMA */
outb(TRANSFER_INFO | DMA_OP, CMD_REG);
#if USE_PIO
if (!current_SC->use_sg) /* Don't use scatter-gather */
NCR53c406a_pio_write(current_SC->request_buffer,
current_SC->request_bufflen);
NCR53c406a_pio_write(current_SC->request_buffer, current_SC->request_bufflen);
else { /* use scatter-gather */
sgcount = current_SC->use_sg;
sglist = current_SC->request_buffer;
while( sgcount-- ) {
while (sgcount--) {
NCR53c406a_pio_write(page_address(sglist->page) + sglist->offset, sglist->length);
sglist++;
}
......@@ -907,25 +897,23 @@ NCR53c406a_intr(int unused, void *dev_id, struct pt_regs *regs){
break;
case 0x01: /* DATA-IN */
if(int_reg & 0x10){ /* Target requesting info transfer */
if (int_reg & 0x10) { /* Target requesting info transfer */
rtrc(6);
current_SC->SCp.phase = data_in;
VDEB(printk("NCR53c406a: Data-In phase\n"));
outb(FLUSH_FIFO, CMD_REG);
LOAD_DMA_COUNT(current_SC->request_bufflen); /* Max transfer size */
#if USE_DMA /* No s/g support for DMA */
NCR53c406a_dma_read(current_SC->request_buffer,
current_SC->request_bufflen);
NCR53c406a_dma_read(current_SC->request_buffer, current_SC->request_bufflen);
#endif /* USE_DMA */
outb(TRANSFER_INFO | DMA_OP, CMD_REG);
#if USE_PIO
if (!current_SC->use_sg) /* Don't use scatter-gather */
NCR53c406a_pio_read(current_SC->request_buffer,
current_SC->request_bufflen);
NCR53c406a_pio_read(current_SC->request_buffer, current_SC->request_bufflen);
else { /* Use scatter-gather */
sgcount = current_SC->use_sg;
sglist = current_SC->request_buffer;
while( sgcount-- ) {
while (sgcount--) {
NCR53c406a_pio_read(page_address(sglist->page) + sglist->offset, sglist->length);
sglist++;
}
......@@ -969,11 +957,9 @@ NCR53c406a_intr(int unused, void *dev_id, struct pt_regs *regs){
current_SC->SCp.Message = inb(SCSI_FIFO);
VDEB(printk("SCSI FIFO size=%d\n", inb(FIFO_FLAGS) & 0x1f));
DEB(printk("Status = %02x Message = %02x\n",
current_SC->SCp.Status, current_SC->SCp.Message));
DEB(printk("Status = %02x Message = %02x\n", current_SC->SCp.Status, current_SC->SCp.Message));
if(current_SC->SCp.Message == SAVE_POINTERS ||
current_SC->SCp.Message == DISCONNECT) {
if (current_SC->SCp.Message == SAVE_POINTERS || current_SC->SCp.Message == DISCONNECT) {
outb(SET_ATN, CMD_REG); /* Reject message */
DEB(printk("Discarding SAVE_POINTERS message\n"));
}
......@@ -997,7 +983,7 @@ static int irq_probe(void)
/* Wait for the interrupt to occur */
i = jiffies + WATCHDOG;
while(time_after(i, jiffies) && !(inb(STAT_REG) & 0x80))
while (time_after(i, jiffies) && !(inb(STAT_REG) & 0x80))
barrier();
if (time_before_eq(i, jiffies)) { /* Timed out, must be hardware trouble */
probe_irq_off(irqs);
......@@ -1036,46 +1022,47 @@ static void chip_init(void)
outb(SYNC_MODE, SYNCOFF); /* synchronous mode */
}
void __init calc_port_addr(void)
static void __init calc_port_addr(void)
{
/* Control Register Set 0 */
TC_LSB = (port_base+0x00);
TC_MSB = (port_base+0x01);
SCSI_FIFO = (port_base+0x02);
CMD_REG = (port_base+0x03);
STAT_REG = (port_base+0x04);
DEST_ID = (port_base+0x04);
INT_REG = (port_base+0x05);
SRTIMOUT = (port_base+0x05);
SEQ_REG = (port_base+0x06);
SYNCPRD = (port_base+0x06);
FIFO_FLAGS = (port_base+0x07);
SYNCOFF = (port_base+0x07);
CONFIG1 = (port_base+0x08);
CLKCONV = (port_base+0x09);
TC_LSB = (port_base + 0x00);
TC_MSB = (port_base + 0x01);
SCSI_FIFO = (port_base + 0x02);
CMD_REG = (port_base + 0x03);
STAT_REG = (port_base + 0x04);
DEST_ID = (port_base + 0x04);
INT_REG = (port_base + 0x05);
SRTIMOUT = (port_base + 0x05);
SEQ_REG = (port_base + 0x06);
SYNCPRD = (port_base + 0x06);
FIFO_FLAGS = (port_base + 0x07);
SYNCOFF = (port_base + 0x07);
CONFIG1 = (port_base + 0x08);
CLKCONV = (port_base + 0x09);
/* TESTREG = (port_base+0x0A); */
CONFIG2 = (port_base+0x0B);
CONFIG3 = (port_base+0x0C);
CONFIG4 = (port_base+0x0D);
TC_HIGH = (port_base+0x0E);
CONFIG2 = (port_base + 0x0B);
CONFIG3 = (port_base + 0x0C);
CONFIG4 = (port_base + 0x0D);
TC_HIGH = (port_base + 0x0E);
/* FIFO_BOTTOM = (port_base+0x0F); */
/* Control Register Set 1 */
/* JUMPER_SENSE = (port_base+0x00);*/
/* SRAM_PTR = (port_base+0x01);*/
/* SRAM_DATA = (port_base+0x02);*/
PIO_FIFO = (port_base+0x04);
/* PIO_FIFO1 = (port_base+0x05);*/
/* PIO_FIFO2 = (port_base+0x06);*/
/* PIO_FIFO3 = (port_base+0x07);*/
PIO_STATUS = (port_base+0x08);
/* ATA_CMD = (port_base+0x09);*/
/* ATA_ERR = (port_base+0x0A);*/
PIO_FLAG = (port_base+0x0B);
CONFIG5 = (port_base+0x0D);
/* SIGNATURE = (port_base+0x0E);*/
/* CONFIG6 = (port_base+0x0F);*/
/* JUMPER_SENSE = (port_base+0x00); */
/* SRAM_PTR = (port_base+0x01); */
/* SRAM_DATA = (port_base+0x02); */
PIO_FIFO = (port_base + 0x04);
/* PIO_FIFO1 = (port_base+0x05); */
/* PIO_FIFO2 = (port_base+0x06); */
/* PIO_FIFO3 = (port_base+0x07); */
PIO_STATUS = (port_base + 0x08);
/* ATA_CMD = (port_base+0x09); */
/* ATA_ERR = (port_base+0x0A); */
PIO_FLAG = (port_base + 0x0B);
CONFIG5 = (port_base + 0x0D);
/* SIGNATURE = (port_base+0x0E); */
/* CONFIG6 = (port_base+0x0F); */
}
MODULE_LICENSE("GPL");
/* Eventually this will go into an include file, but this will be later */
......
drivers/scsi/NCR53c406a.h
View file @ c7a4e6c2
......@@ -32,8 +32,10 @@
info: NCR53c406a_info /* info */, \
command: NCR53c406a_command /* command */, \
queuecommand: NCR53c406a_queue /* queuecommand */, \
abort: NCR53c406a_abort /* abort */, \
reset: NCR53c406a_reset /* reset */, \
eh_abort_handler: NCR53c406a_abort /* abort */, \
eh_bus_reset_handler: NCR53c406a_bus_reset /* reset */, \
eh_device_reset_handler: NCR53c406a_device_reset /* reset */, \
eh_host_reset_handler: NCR53c406a_host_reset /* reset */, \
bios_param: NCR53c406a_biosparm /* biosparm */, \
can_queue: 1 /* can_queue */, \
this_id: 7 /* SCSI ID of the chip */, \
......@@ -43,33 +45,15 @@
use_clustering: ENABLE_CLUSTERING \
}
int NCR53c406a_detect(Scsi_Host_Template *);
const char* NCR53c406a_info(struct Scsi_Host *);
static int NCR53c406a_detect(Scsi_Host_Template *);
static const char *NCR53c406a_info(struct Scsi_Host *);
int NCR53c406a_command(Scsi_Cmnd *);
int NCR53c406a_queue(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
int NCR53c406a_abort(Scsi_Cmnd *);
int NCR53c406a_reset(Scsi_Cmnd *, unsigned int);
int NCR53c406a_biosparm(Disk *, struct block_device *, int []);
static int NCR53c406a_command(Scsi_Cmnd *);
static int NCR53c406a_queue(Scsi_Cmnd *, void (*done) (Scsi_Cmnd *));
static int NCR53c406a_abort(Scsi_Cmnd *);
static int NCR53c406a_bus_reset(Scsi_Cmnd *);
static int NCR53c406a_device_reset(Scsi_Cmnd *);
static int NCR53c406a_host_reset(Scsi_Cmnd *);
static int NCR53c406a_biosparm(Disk *, struct block_device *, int[]);
#endif /* _NCR53C406A_H */
/*
* Overrides for Emacs so that we get a uniform tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-indent-level: 4
* c-brace-imaginary-offset: 0
* c-brace-offset: -4
* c-argdecl-indent: 4
* c-label-offset: -4
* c-continued-statement-offset: 4
* c-continued-brace-offset: 0
* indent-tabs-mode: nil
* tab-width: 8
* End:
*/
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