Commit 134240c3 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by James Bottomley

[PATCH] wd7000 updates

Avoid old APIs and fix a bad bug were the irq handler argument was
derefenced as struct Scsi_Host * instead of Adpater * which made the
driver instantly crash on SMP.
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent f354a51a
......@@ -183,7 +183,9 @@
#include <asm/dma.h>
#include <asm/io.h>
#include "scsi.h"
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsicam.h>
......@@ -218,7 +220,7 @@
* In this version, sg_tablesize now defaults to WD7000_SG, and will
* be set to SG_NONE for older boards. This is the reverse of the
* previous default, and was changed so that the driver-level
* Scsi_Host_Template would reflect the driver's support for scatter/
* scsi_host_template would reflect the driver's support for scatter/
* gather.
*
* Also, it has been reported that boards at Revision 6 support scatter/
......@@ -435,8 +437,8 @@ typedef struct initCmd {
* carrying SCB addresses to/from the 7000-FASST2.
*
* Note also since SCBs are not "permanently" associated with mailboxes,
* there is no need to keep a global list of Scsi_Cmnd pointers indexed
* by OGMB. Again, SCBs reference their Scsi_Cmnds directly, so mailbox
* there is no need to keep a global list of scsi_cmnd pointers indexed
* by OGMB. Again, SCBs reference their scsi_cmnds directly, so mailbox
* indices need not be involved.
*/
......@@ -463,7 +465,7 @@ typedef struct scb { /* Command Control Block 5.4.1 */
unchar direc; /* Transfer Direction */
unchar reserved2[6]; /* SCSI Command Descriptor Block */
/* end of hardware SCB */
Scsi_Cmnd *SCpnt; /* Scsi_Cmnd using this SCB */
struct scsi_cmnd *SCpnt;/* scsi_cmnd using this SCB */
Sgb sgb[WD7000_SG]; /* Scatter/gather list for this SCB */
Adapter *host; /* host adapter */
struct scb *next; /* for lists of scbs */
......@@ -799,8 +801,8 @@ static inline void wd7000_enable_dma(Adapter * host)
static inline short WAIT(unsigned port, unsigned mask, unsigned allof, unsigned noneof)
{
register unsigned WAITbits;
register unsigned long WAITtimeout = jiffies + WAITnexttimeout;
unsigned WAITbits;
unsigned long WAITtimeout = jiffies + WAITnexttimeout;
while (time_before_eq(jiffies, WAITtimeout)) {
WAITbits = inb(port) & mask;
......@@ -846,10 +848,10 @@ static inline int command_out(Adapter * host, unchar * cmd, int len)
*/
static inline Scb *alloc_scbs(struct Scsi_Host *host, int needed)
{
register Scb *scb, *p = NULL;
Scb *scb, *p = NULL;
unsigned long flags;
register unsigned long timeout = jiffies + WAITnexttimeout;
register unsigned long now;
unsigned long timeout = jiffies + WAITnexttimeout;
unsigned long now;
int i;
if (needed <= 0)
......@@ -936,7 +938,7 @@ static int mail_out(Adapter * host, Scb * scbptr)
* Note: this can also be used for ICBs; just cast to the parm type.
*/
{
register int i, ogmb;
int i, ogmb;
unsigned long flags;
unchar start_ogmb;
Mailbox *ogmbs = host->mb.ogmb;
......@@ -1034,23 +1036,26 @@ static int make_code(unsigned hosterr, unsigned scsierr)
#define wd7000_intr_ack(host) outb (0, host->iobase + ASC_INTR_ACK)
static void wd7000_intr_handle(int irq, void *dev_id, struct pt_regs *regs)
static irqreturn_t wd7000_intr(int irq, void *dev_id, struct pt_regs *regs)
{
register int flag, icmb, errstatus, icmb_status;
register int host_error, scsi_error;
register Scb *scb; /* for SCSI commands */
register IcbAny *icb; /* for host commands */
register Scsi_Cmnd *SCpnt;
Adapter *host = (Adapter *) dev_id;
int flag, icmb, errstatus, icmb_status;
int host_error, scsi_error;
Scb *scb; /* for SCSI commands */
IcbAny *icb; /* for host commands */
struct scsi_cmnd *SCpnt;
Mailbox *icmbs = host->mb.icmb;
unsigned long flags;
spin_lock_irqsave(host->sh->host_lock, flags);
host->int_counter++;
dprintk("wd7000_intr_handle: irq = %d, host = 0x%06lx\n", irq, (long) host);
dprintk("wd7000_intr: irq = %d, host = 0x%06lx\n", irq, (long) host);
flag = inb(host->iobase + ASC_INTR_STAT);
dprintk("wd7000_intr_handle: intr stat = 0x%02x\n", flag);
dprintk("wd7000_intr: intr stat = 0x%02x\n", flag);
if (!(inb(host->iobase + ASC_STAT) & INT_IM)) {
/* NB: these are _very_ possible if IRQ 15 is being used, since
......@@ -1061,35 +1066,42 @@ static void wd7000_intr_handle(int irq, void *dev_id, struct pt_regs *regs)
* can sort these out. Otherwise, electrical noise and other such
* problems would be indistinguishable from valid interrupts...
*/
dprintk("wd7000_intr_handle: phantom interrupt...\n");
wd7000_intr_ack(host);
return;
dprintk("wd7000_intr: phantom interrupt...\n");
goto ack;
}
if (flag & MB_INTR) {
if (!(flag & MB_INTR))
goto ack;
/* The interrupt is for a mailbox */
if (!(flag & IMB_INTR)) {
dprintk("wd7000_intr_handle: free outgoing mailbox\n");
dprintk("wd7000_intr: free outgoing mailbox\n");
/*
* If sleep_on() and the "interrupt on free OGMB" command are
* used in mail_out(), wake_up() should correspondingly be called
* here. For now, we don't need to do anything special.
*/
wd7000_intr_ack(host);
return;
} else {
goto ack;
}
/* The interrupt is for an incoming mailbox */
icmb = flag & MB_MASK;
icmb_status = icmbs[icmb].status;
if (icmb_status & 0x80) { /* unsolicited - result in ICMB */
dprintk("wd7000_intr_handle: unsolicited interrupt 0x%02x\n", icmb_status);
wd7000_intr_ack(host);
return;
dprintk("wd7000_intr: unsolicited interrupt 0x%02x\n", icmb_status);
goto ack;
}
/* Aaaargh! (Zaga) */
scb = isa_bus_to_virt(scsi2int((unchar *) icmbs[icmb].scbptr));
icmbs[icmb].status = 0;
if (!(scb->op & ICB_OP_MASK)) { /* an SCB is done */
if (scb->op & ICB_OP_MASK) { /* an SCB is done */
icb = (IcbAny *) scb;
icb->status = icmb_status;
icb->phase = 0;
goto ack;
}
SCpnt = scb->SCpnt;
if (--(SCpnt->SCp.phase) <= 0) { /* all scbs are done */
host_error = scb->vue | (icmb_status << 8);
......@@ -1101,39 +1113,23 @@ static void wd7000_intr_handle(int irq, void *dev_id, struct pt_regs *regs)
SCpnt->scsi_done(SCpnt);
}
} else { /* an ICB is done */
icb = (IcbAny *) scb;
icb->status = icmb_status;
icb->phase = 0;
}
} /* incoming mailbox */
}
ack:
dprintk("wd7000_intr: return from interrupt handler\n");
wd7000_intr_ack(host);
dprintk("wd7000_intr_handle: return from interrupt handler\n");
}
static irqreturn_t do_wd7000_intr_handle(int irq, void *dev_id,
struct pt_regs *regs)
{
unsigned long flags;
struct Scsi_Host *host = dev_id;
spin_lock_irqsave(host->host_lock, flags);
wd7000_intr_handle(irq, dev_id, regs);
spin_unlock_irqrestore(host->host_lock, flags);
spin_unlock_irqrestore(host->sh->host_lock, flags);
return IRQ_HANDLED;
}
static int wd7000_queuecommand(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
static int wd7000_queuecommand(struct scsi_cmnd *SCpnt,
void (*done)(struct scsi_cmnd *))
{
register Scb *scb;
register Sgb *sgb;
register unchar *cdb = (unchar *) SCpnt->cmnd;
register unchar idlun;
register short cdblen;
Scb *scb;
Sgb *sgb;
unchar *cdb = (unchar *) SCpnt->cmnd;
unchar idlun;
short cdblen;
Adapter *host = (Adapter *) SCpnt->device->host->hostdata;
cdblen = SCpnt->cmd_len;
......@@ -1293,7 +1289,7 @@ static int wd7000_init(Adapter * host)
return 0;
if (request_irq(host->irq, do_wd7000_intr_handle, SA_INTERRUPT, "wd7000", host)) {
if (request_irq(host->irq, wd7000_intr, SA_INTERRUPT, "wd7000", host)) {
printk("wd7000_init: can't get IRQ %d.\n", host->irq);
return (0);
}
......@@ -1434,7 +1430,7 @@ static int wd7000_proc_info(struct Scsi_Host *host, char *buffer, char **start,
*
*/
static int wd7000_detect(Scsi_Host_Template * tpnt)
static int wd7000_detect(struct scsi_host_template *tpnt)
{
short present = 0, biosaddr_ptr, sig_ptr, i, pass;
short biosptr[NUM_CONFIGS];
......@@ -1622,25 +1618,11 @@ static int wd7000_abort(Scsi_Cmnd * SCpnt)
}
#endif
/*
* I also have no idea how to do a reset...
*/
static int wd7000_bus_reset(Scsi_Cmnd * SCpnt)
{
return FAILED;
}
static int wd7000_device_reset(Scsi_Cmnd * SCpnt)
{
return FAILED;
}
/*
* Last resort. Reinitialize the board.
*/
static int wd7000_host_reset(Scsi_Cmnd * SCpnt)
static int wd7000_host_reset(struct scsi_cmnd *SCpnt)
{
Adapter *host = (Adapter *) SCpnt->device->host->hostdata;
......@@ -1650,7 +1632,6 @@ static int wd7000_host_reset(Scsi_Cmnd * SCpnt)
return SUCCESS;
}
/*
* This was borrowed directly from aha1542.c. (Zaga)
*/
......@@ -1706,15 +1687,13 @@ MODULE_AUTHOR("Thomas Wuensche, John Boyd, Miroslav Zagorac");
MODULE_DESCRIPTION("Driver for the WD7000 series ISA controllers");
MODULE_LICENSE("GPL");
static Scsi_Host_Template driver_template = {
static struct scsi_host_template driver_template = {
.proc_name = "wd7000",
.proc_info = wd7000_proc_info,
.name = "Western Digital WD-7000",
.detect = wd7000_detect,
.release = wd7000_release,
.queuecommand = wd7000_queuecommand,
.eh_bus_reset_handler = wd7000_bus_reset,
.eh_device_reset_handler = wd7000_device_reset,
.eh_host_reset_handler = wd7000_host_reset,
.bios_param = wd7000_biosparam,
.can_queue = WD7000_Q,
......
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