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aha1542: convert to use the data buffer accessors 

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Jens Axboe 2007-07-16 10:00:31 +02:00
parent d274a9878b
commit 51cf22495a
1 changed files with 15 additions and 17 deletions
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32
drivers/scsi/aha1542.c
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@ -61,15 +61,15 @@ static void BAD_DMA(void *address, unsigned int length)
}
static void BAD_SG_DMA(Scsi_Cmnd * SCpnt,
struct scatterlist *sgpnt,
struct scatterlist *sgp,
int nseg,
int badseg)
{
printk(KERN_CRIT "sgpnt[%d:%d] page %p/0x%llx length %u\n",
badseg, nseg,
page_address(sgpnt[badseg].page) + sgpnt[badseg].offset,
(unsigned long long)SCSI_SG_PA(&sgpnt[badseg]),
sgpnt[badseg].length);
page_address(sgp->page) + sgp->offset,
(unsigned long long)SCSI_SG_PA(sgp),
sgp->length);
/*
* Not safe to continue.
@ -691,7 +691,7 @@ static int aha1542_queuecommand(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
memcpy(ccb[mbo].cdb, cmd, ccb[mbo].cdblen);
if (SCpnt->use_sg) {
struct scatterlist *sgpnt;
struct scatterlist *sg;
struct chain *cptr;
#ifdef DEBUG
unsigned char *ptr;
@ -699,23 +699,21 @@ static int aha1542_queuecommand(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
int i;
ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */
SCpnt->host_scribble = kmalloc(512, GFP_KERNEL | GFP_DMA);
sgpnt = (struct scatterlist *) SCpnt->request_buffer;
cptr = (struct chain *) SCpnt->host_scribble;
if (cptr == NULL) {
/* free the claimed mailbox slot */
HOSTDATA(SCpnt->device->host)->SCint[mbo] = NULL;
return SCSI_MLQUEUE_HOST_BUSY;
}
for (i = 0; i < SCpnt->use_sg; i++) {
if (sgpnt[i].length == 0 || SCpnt->use_sg > 16 ||
(((int) sgpnt[i].offset) & 1) || (sgpnt[i].length & 1)) {
scsi_for_each_sg(SCpnt, sg, SCpnt->use_sg, i) {
if (sg->length == 0 || SCpnt->use_sg > 16 ||
(((int) sg->offset) & 1) || (sg->length & 1)) {
unsigned char *ptr;
printk(KERN_CRIT "Bad segment list supplied to aha1542.c (%d, %d)\n", SCpnt->use_sg, i);
for (i = 0; i < SCpnt->use_sg; i++) {
scsi_for_each_sg(SCpnt, sg, SCpnt->use_sg, i) {
printk(KERN_CRIT "%d: %p %d\n", i,
(page_address(sgpnt[i].page) +
sgpnt[i].offset),
sgpnt[i].length);
(page_address(sg->page) +
sg->offset), sg->length);
};
printk(KERN_CRIT "cptr %x: ", (unsigned int) cptr);
ptr = (unsigned char *) &cptr[i];
@ -723,10 +721,10 @@ static int aha1542_queuecommand(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
printk("%02x ", ptr[i]);
panic("Foooooooood fight!");
};
any2scsi(cptr[i].dataptr, SCSI_SG_PA(&sgpnt[i]));
if (SCSI_SG_PA(&sgpnt[i]) + sgpnt[i].length - 1 > ISA_DMA_THRESHOLD)
BAD_SG_DMA(SCpnt, sgpnt, SCpnt->use_sg, i);
any2scsi(cptr[i].datalen, sgpnt[i].length);
any2scsi(cptr[i].dataptr, SCSI_SG_PA(sg));
if (SCSI_SG_PA(sg) + sg->length - 1 > ISA_DMA_THRESHOLD)
BAD_SG_DMA(SCpnt, sg, SCpnt->use_sg, i);
any2scsi(cptr[i].datalen, sg->length);
};
any2scsi(ccb[mbo].datalen, SCpnt->use_sg * sizeof(struct chain));
any2scsi(ccb[mbo].dataptr, SCSI_BUF_PA(cptr));