diff options
Diffstat (limited to 'drivers/scsi/aha152x.c')
| -rw-r--r-- | drivers/scsi/aha152x.c | 85 |
1 files changed, 52 insertions, 33 deletions
diff --git a/drivers/scsi/aha152x.c b/drivers/scsi/aha152x.c index cb2ee25f213f..531a1f9ceb51 100644 --- a/drivers/scsi/aha152x.c +++ b/drivers/scsi/aha152x.c @@ -1260,16 +1260,15 @@ static void free_hard_reset_SCs(struct Scsi_Host *shpnt, Scsi_Cmnd **SCs) * Reset the bus * */ -static int aha152x_bus_reset(Scsi_Cmnd *SCpnt) +static int aha152x_bus_reset_host(struct Scsi_Host *shpnt) { - struct Scsi_Host *shpnt = SCpnt->device->host; unsigned long flags; DO_LOCK(flags); #if defined(AHA152X_DEBUG) if(HOSTDATA(shpnt)->debug & debug_eh) { - printk(DEBUG_LEAD "aha152x_bus_reset(%p)", CMDINFO(SCpnt), SCpnt); + printk(KERN_DEBUG "scsi%d: bus reset", shpnt->host_no); show_queues(shpnt); } #endif @@ -1277,14 +1276,14 @@ static int aha152x_bus_reset(Scsi_Cmnd *SCpnt) free_hard_reset_SCs(shpnt, &ISSUE_SC); free_hard_reset_SCs(shpnt, &DISCONNECTED_SC); - DPRINTK(debug_eh, DEBUG_LEAD "resetting bus\n", CMDINFO(SCpnt)); + DPRINTK(debug_eh, KERN_DEBUG "scsi%d: resetting bus\n", shpnt->host_no); SETPORT(SCSISEQ, SCSIRSTO); mdelay(256); SETPORT(SCSISEQ, 0); mdelay(DELAY); - DPRINTK(debug_eh, DEBUG_LEAD "bus resetted\n", CMDINFO(SCpnt)); + DPRINTK(debug_eh, KERN_DEBUG "scsi%d: bus resetted\n", shpnt->host_no); setup_expected_interrupts(shpnt); if(HOSTDATA(shpnt)->commands==0) @@ -1295,6 +1294,14 @@ static int aha152x_bus_reset(Scsi_Cmnd *SCpnt) return SUCCESS; } +/* + * Reset the bus + * + */ +static int aha152x_bus_reset(Scsi_Cmnd *SCpnt) +{ + return aha152x_bus_reset_host(SCpnt->device->host); +} /* * Restore default values to the AIC-6260 registers and reset the fifos @@ -1337,23 +1344,28 @@ static void reset_ports(struct Scsi_Host *shpnt) * Reset the host (bus and controller) * */ -int aha152x_host_reset(Scsi_Cmnd * SCpnt) +int aha152x_host_reset_host(struct Scsi_Host *shpnt) { -#if defined(AHA152X_DEBUG) - struct Scsi_Host *shpnt = SCpnt->device->host; -#endif - - DPRINTK(debug_eh, DEBUG_LEAD "aha152x_host_reset(%p)\n", CMDINFO(SCpnt), SCpnt); + DPRINTK(debug_eh, KERN_DEBUG "scsi%d: host reset\n", shpnt->host_no); - aha152x_bus_reset(SCpnt); + aha152x_bus_reset_host(shpnt); - DPRINTK(debug_eh, DEBUG_LEAD "resetting ports\n", CMDINFO(SCpnt)); - reset_ports(SCpnt->device->host); + DPRINTK(debug_eh, KERN_DEBUG "scsi%d: resetting ports\n", shpnt->host_no); + reset_ports(shpnt); return SUCCESS; } /* + * Reset the host (bus and controller) + * + */ +static int aha152x_host_reset(Scsi_Cmnd *SCpnt) +{ + return aha152x_host_reset_host(SCpnt->device->host); +} + +/* * Return the "logical geometry" * */ @@ -1431,22 +1443,18 @@ static void run(void) { int i; for (i = 0; i<ARRAY_SIZE(aha152x_host); i++) { - struct Scsi_Host *shpnt = aha152x_host[i]; - if (shpnt && HOSTDATA(shpnt)->service) { - HOSTDATA(shpnt)->service=0; - is_complete(shpnt); - } + is_complete(aha152x_host[i]); } } /* - * Interrupts handler + * Interrupt handler * */ - static irqreturn_t intr(int irqno, void *dev_id, struct pt_regs *regs) { struct Scsi_Host *shpnt = lookup_irq(irqno); + unsigned long flags; unsigned char rev, dmacntrl0; if (!shpnt) { @@ -1472,23 +1480,23 @@ static irqreturn_t intr(int irqno, void *dev_id, struct pt_regs *regs) if ((rev == 0xFF) && (dmacntrl0 == 0xFF)) return IRQ_NONE; + if( TESTLO(DMASTAT, INTSTAT) ) + return IRQ_NONE; + /* no more interrupts from the controller, while we're busy. INTEN is restored by the BH handler */ CLRBITS(DMACNTRL0, INTEN); -#if 0 - /* check if there is already something to be - serviced; should not happen */ - if(HOSTDATA(shpnt)->service) { - printk(KERN_ERR "aha152x%d: lost interrupt (%d)\n", HOSTNO, HOSTDATA(shpnt)->service); - show_queues(shpnt); + DO_LOCK(flags); + if( HOSTDATA(shpnt)->service==0 ) { + HOSTDATA(shpnt)->service=1; + + /* Poke the BH handler */ + INIT_WORK(&aha152x_tq, (void *) run, NULL); + schedule_work(&aha152x_tq); } -#endif - - /* Poke the BH handler */ - HOSTDATA(shpnt)->service++; - INIT_WORK(&aha152x_tq, (void *) run, NULL); - schedule_work(&aha152x_tq); + DO_UNLOCK(flags); + return IRQ_HANDLED; } @@ -2527,7 +2535,18 @@ static void is_complete(struct Scsi_Host *shpnt) unsigned long flags; int pending; + if(!shpnt) + return; + DO_LOCK(flags); + + if( HOSTDATA(shpnt)->service==0 ) { + DO_UNLOCK(flags); + return; + } + + HOSTDATA(shpnt)->service = 0; + if(HOSTDATA(shpnt)->in_intr) { DO_UNLOCK(flags); /* aha152x_error never returns.. */ |
