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m68k: Atari SCSI revival

Sfoglia il codice sorgente 
SCSI should be working on a TT (but someone should really try!) but causes
trouble on a Falcon (as in: it ate a filesystem of mine) at least when
used concurrently with IDE. I have the notion it's because locking of the
ST-DMA interrupt by IDE is broken in 2.6 (the IDE driver always complains
about trying to release an already-released ST-DMA). Needs more work, but
that's on the IDE or m68k interrupt side rather than SCSI.

Signed-off-by: Michael Schmitz <schmitz@debian.org>
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Michael Schmitz
2007-05-01 22:32:35 +02:00
committato da Linus Torvalds
parent 8d41f0e8d5
commit fb810d121b
4 ha cambiato i file con 77 aggiunte e 17 eliminazioni
Scarica il file Patch Scarica il file Diff Expand all files Collapse all files

52
drivers/scsi/atari_NCR5380.c
Vedi File

@@ -264,7 +264,7 @@ static struct scsi_host_template *the_template = NULL;
(struct NCR5380_hostdata *)(in)->hostdata
#define HOSTDATA(in) ((struct NCR5380_hostdata *)(in)->hostdata)
#define NEXT(cmd) ((Scsi_Cmnd *)((cmd)->host_scribble))
#define NEXT(cmd) ((cmd)->host_scribble)
#define NEXTADDR(cmd) ((Scsi_Cmnd **)&((cmd)->host_scribble))
#define HOSTNO instance->host_no
@@ -716,7 +716,7 @@ static void NCR5380_print_status (struct Scsi_Host *instance)
printk("NCR5380_print_status: no memory for print buffer\n");
return;
}
len = NCR5380_proc_info(pr_bfr, &start, 0, PAGE_SIZE, HOSTNO, 0);
len = NCR5380_proc_info(instance, pr_bfr, &start, 0, PAGE_SIZE, 0);
pr_bfr[len] = 0;
printk("\n%s\n", pr_bfr);
free_page((unsigned long) pr_bfr);
@@ -877,6 +877,46 @@ static int NCR5380_init (struct Scsi_Host *instance, int flags)
return 0;
}
/*
* our own old-style timeout update
*/
/*
* The strategy is to cause the timer code to call scsi_times_out()
* when the soonest timeout is pending.
* The arguments are used when we are queueing a new command, because
* we do not want to subtract the time used from this time, but when we
* set the timer, we want to take this value into account.
*/
int atari_scsi_update_timeout(Scsi_Cmnd * SCset, int timeout)
{
int rtn;
/*
* We are using the new error handling code to actually register/deregister
* timers for timeout.
*/
if (!timer_pending(&SCset->eh_timeout)) {
rtn = 0;
} else {
rtn = SCset->eh_timeout.expires - jiffies;
}
if (timeout == 0) {
del_timer(&SCset->eh_timeout);
SCset->eh_timeout.data = (unsigned long) NULL;
SCset->eh_timeout.expires = 0;
} else {
if (SCset->eh_timeout.data != (unsigned long) NULL)
del_timer(&SCset->eh_timeout);
SCset->eh_timeout.data = (unsigned long) SCset;
SCset->eh_timeout.expires = jiffies + timeout;
add_timer(&SCset->eh_timeout);
}
return rtn;
}
/*
* Function : int NCR5380_queue_command (Scsi_Cmnd *cmd,
* void (*done)(Scsi_Cmnd *))
@@ -902,7 +942,7 @@ int NCR5380_queue_command (Scsi_Cmnd *cmd, void (*done)(Scsi_Cmnd *))
Scsi_Cmnd *tmp;
int oldto;
unsigned long flags;
extern int update_timeout(Scsi_Cmnd * SCset, int timeout);
// extern int update_timeout(Scsi_Cmnd * SCset, int timeout);
#if (NDEBUG & NDEBUG_NO_WRITE)
switch (cmd->cmnd[0]) {
@@ -978,9 +1018,9 @@ int NCR5380_queue_command (Scsi_Cmnd *cmd, void (*done)(Scsi_Cmnd *))
* alter queues and touch the lock.
*/
if (!IS_A_TT()) {
oldto = update_timeout(cmd, 0);
oldto = atari_scsi_update_timeout(cmd, 0);
falcon_get_lock();
update_timeout(cmd, oldto);
atari_scsi_update_timeout(cmd, oldto);
}
if (!(hostdata->issue_queue) || (cmd->cmnd[0] == REQUEST_SENSE)) {
LIST(cmd, hostdata->issue_queue);
@@ -1435,7 +1475,7 @@ static int NCR5380_select (struct Scsi_Host *instance, Scsi_Cmnd *cmd, int tag)
local_irq_restore(flags);
/* Wait for arbitration logic to complete */
#if NCR_TIMEOUT
#if defined(NCR_TIMEOUT)
{
unsigned long timeout = jiffies + 2*NCR_TIMEOUT;