/* The meaning of the Scsi_Pointer members in this driver is as follows:
* ptr: Chaining
- * this_residual: gdth_bufflen
- * buffer: gdth_sglist
+ * this_residual: unused
+ * buffer: unused
* dma_handle: unused
- * buffers_residual: gdth_sg_count
+ * buffers_residual: unused
* Status: unused
* Message: unused
* have_data_in: unused
#include <linux/timer.h>
#include <linux/dma-mapping.h>
#include <linux/list.h>
+#include <linux/smp_lock.h>
#ifdef GDTH_RTC
#include <linux/mc146818rtc.h>
.release = gdth_close,
};
-/*
- * gdth scsi_command access wrappers.
- * below 6 functions are used throughout the driver to access scsi_command's
- * io parameters. The reason we do not use the regular accessors from
- * scsi_cmnd.h is because of gdth_execute(). Since it is unrecommended for
- * llds to directly set scsi_cmnd's IO members. This driver will use SCp
- * members for IO parameters, and will copy scsi_cmnd's members to Scp
- * members in queuecommand. For internal commands through gdth_execute()
- * SCp's members will be set directly.
- */
-static inline unsigned gdth_bufflen(struct scsi_cmnd *cmd)
-{
- return (unsigned)cmd->SCp.this_residual;
-}
-
-static inline void gdth_set_bufflen(struct scsi_cmnd *cmd, unsigned bufflen)
-{
- cmd->SCp.this_residual = bufflen;
-}
-
-static inline unsigned gdth_sg_count(struct scsi_cmnd *cmd)
-{
- return (unsigned)cmd->SCp.buffers_residual;
-}
-
-static inline void gdth_set_sg_count(struct scsi_cmnd *cmd, unsigned sg_count)
-{
- cmd->SCp.buffers_residual = sg_count;
-}
-
-static inline struct scatterlist *gdth_sglist(struct scsi_cmnd *cmd)
-{
- return cmd->SCp.buffer;
-}
-
-static inline void gdth_set_sglist(struct scsi_cmnd *cmd,
- struct scatterlist *sglist)
-{
- cmd->SCp.buffer = sglist;
-}
-
#include "gdth_proc.h"
#include "gdth_proc.c"
/* use request field to save the ptr. to completion struct. */
scp->request = (struct request *)&wait;
- scp->timeout_per_command = timeout*HZ;
scp->cmd_len = 12;
- memcpy(scp->cmnd, cmnd, 12);
+ scp->cmnd = cmnd;
cmndinfo.priority = IOCTL_PRI;
cmndinfo.internal_cmd_str = gdtcmd;
cmndinfo.internal_command = 1;
#endif /* CONFIG_ISA */
#ifdef CONFIG_PCI
-static bool gdth_pci_registered;
static bool gdth_search_vortex(ushort device)
{
.remove = gdth_pci_remove_one,
};
-static void gdth_pci_remove_one(struct pci_dev *pdev)
+static void __devexit gdth_pci_remove_one(struct pci_dev *pdev)
{
gdth_ha_str *ha = pci_get_drvdata(pdev);
pci_disable_device(pdev);
}
-static int gdth_pci_init_one(struct pci_dev *pdev,
+static int __devinit gdth_pci_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
ushort vendor = pdev->vendor;
#endif /* CONFIG_ISA */
#ifdef CONFIG_PCI
-static int gdth_init_pci(struct pci_dev *pdev, gdth_pci_str *pcistr,
+static int __devinit gdth_init_pci(struct pci_dev *pdev, gdth_pci_str *pcistr,
gdth_ha_str *ha)
{
register gdt6_dpram_str __iomem *dp6_ptr;
/* controller protocol functions */
-static void __init gdth_enable_int(gdth_ha_str *ha)
+static void __devinit gdth_enable_int(gdth_ha_str *ha)
{
ulong flags;
gdt2_dpram_str __iomem *dp2_ptr;
/* search for devices */
-static int __init gdth_search_drives(gdth_ha_str *ha)
+static int __devinit gdth_search_drives(gdth_ha_str *ha)
{
ushort cdev_cnt, i;
int ok;
register Scsi_Cmnd *pscp;
register Scsi_Cmnd *nscp;
ulong flags;
- unchar b, t;
TRACE(("gdth_putq() priority %d\n",priority));
spin_lock_irqsave(&ha->smp_lock, flags);
- if (!cmndinfo->internal_command) {
+ if (!cmndinfo->internal_command)
cmndinfo->priority = priority;
- b = scp->device->channel;
- t = scp->device->id;
- if (priority >= DEFAULT_PRI) {
- if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
- (b==ha->virt_bus && t<MAX_HDRIVES && ha->hdr[t].lock)) {
- TRACE2(("gdth_putq(): locked IO ->update_timeout()\n"));
- cmndinfo->timeout = gdth_update_timeout(scp, 0);
- }
- }
- }
if (ha->req_first==NULL) {
ha->req_first = scp; /* queue was empty */
static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
char *buffer, ushort count)
{
- ushort cpcount,i, max_sg = gdth_sg_count(scp);
+ ushort cpcount,i, max_sg = scsi_sg_count(scp);
ushort cpsum,cpnow;
struct scatterlist *sl;
char *address;
- cpcount = min_t(ushort, count, gdth_bufflen(scp));
+ cpcount = min_t(ushort, count, scsi_bufflen(scp));
if (cpcount) {
cpsum=0;
unsigned long flags;
cpnow = (ushort)sl->length;
TRACE(("copy_internal() now %d sum %d count %d %d\n",
- cpnow, cpsum, cpcount, gdth_bufflen(scp)));
+ cpnow, cpsum, cpcount, scsi_bufflen(scp)));
if (cpsum+cpnow > cpcount)
cpnow = cpcount - cpsum;
cpsum += cpnow;
cmdp->u.cache.BlockCnt = blockcnt;
}
- if (gdth_bufflen(scp)) {
+ if (scsi_bufflen(scp)) {
cmndinfo->dma_dir = (read_write == 1 ?
PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
- sgcnt = pci_map_sg(ha->pdev, gdth_sglist(scp), gdth_sg_count(scp),
+ sgcnt = pci_map_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
cmndinfo->dma_dir);
if (mode64) {
struct scatterlist *sl;
cmdp->u.raw64.lun = l;
cmdp->u.raw64.bus = b;
cmdp->u.raw64.priority = 0;
- cmdp->u.raw64.sdlen = gdth_bufflen(scp);
+ cmdp->u.raw64.sdlen = scsi_bufflen(scp);
cmdp->u.raw64.sense_len = 16;
cmdp->u.raw64.sense_data = sense_paddr;
cmdp->u.raw64.direction =
cmdp->u.raw.bus = b;
cmdp->u.raw.priority = 0;
cmdp->u.raw.link_p = 0;
- cmdp->u.raw.sdlen = gdth_bufflen(scp);
+ cmdp->u.raw.sdlen = scsi_bufflen(scp);
cmdp->u.raw.sense_len = 16;
cmdp->u.raw.sense_data = sense_paddr;
cmdp->u.raw.direction =
cmdp->u.raw.sg_ranz = 0;
}
- if (gdth_bufflen(scp)) {
+ if (scsi_bufflen(scp)) {
cmndinfo->dma_dir = PCI_DMA_BIDIRECTIONAL;
- sgcnt = pci_map_sg(ha->pdev, gdth_sglist(scp), gdth_sg_count(scp),
+ sgcnt = pci_map_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
cmndinfo->dma_dir);
if (mode64) {
struct scatterlist *sl;
eindex = handle;
estr->event_source = 0;
- if (eindex >= MAX_EVENTS) {
+ if (eindex < 0 || eindex >= MAX_EVENTS) {
spin_unlock_irqrestore(&ha->smp_lock, flags);
return eindex;
}
/* retry */
return 2;
}
- if (gdth_bufflen(scp))
- pci_unmap_sg(ha->pdev, gdth_sglist(scp), gdth_sg_count(scp),
+ if (scsi_bufflen(scp))
+ pci_unmap_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
cmndinfo->dma_dir);
if (cmndinfo->sense_paddr)
}
#ifdef GDTH_STATISTICS
+static unchar gdth_timer_running;
+
static void gdth_timeout(ulong data)
{
ulong32 i;
gdth_ha_str *ha;
ulong flags;
- BUG_ON(list_empty(&gdth_instances));
+ if(unlikely(list_empty(&gdth_instances))) {
+ gdth_timer_running = 0;
+ return;
+ }
ha = list_first_entry(&gdth_instances, gdth_ha_str, list);
spin_lock_irqsave(&ha->smp_lock, flags);
add_timer(&gdth_timer);
spin_unlock_irqrestore(&ha->smp_lock, flags);
}
+
+static void gdth_timer_init(void)
+{
+ if (gdth_timer_running)
+ return;
+ gdth_timer_running = 1;
+ TRACE2(("gdth_detect(): Initializing timer !\n"));
+ gdth_timer.expires = jiffies + HZ;
+ gdth_timer.data = 0L;
+ gdth_timer.function = gdth_timeout;
+ add_timer(&gdth_timer);
+}
+#else
+static inline void gdth_timer_init(void)
+{
+}
#endif
static void __init internal_setup(char *str,int *ints)
return ((const char *)ha->binfo.type_string);
}
+static enum blk_eh_timer_return gdth_timed_out(struct scsi_cmnd *scp)
+{
+ gdth_ha_str *ha = shost_priv(scp->device->host);
+ struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
+ unchar b, t;
+ ulong flags;
+ enum blk_eh_timer_return retval = BLK_EH_NOT_HANDLED;
+
+ TRACE(("%s() cmd 0x%x\n", scp->cmnd[0], __func__));
+ b = scp->device->channel;
+ t = scp->device->id;
+
+ /*
+ * We don't really honor the command timeout, but we try to
+ * honor 6 times of the actual command timeout! So reset the
+ * timer if this is less than 6th timeout on this command!
+ */
+ if (++cmndinfo->timeout_count < 6)
+ retval = BLK_EH_RESET_TIMER;
+
+ /* Reset the timeout if it is locked IO */
+ spin_lock_irqsave(&ha->smp_lock, flags);
+ if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha, b)].lock) ||
+ (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock)) {
+ TRACE2(("%s(): locked IO, reset timeout\n", __func__));
+ retval = BLK_EH_RESET_TIMER;
+ }
+ spin_unlock_irqrestore(&ha->smp_lock, flags);
+
+ return retval;
+}
+
+
static int gdth_eh_bus_reset(Scsi_Cmnd *scp)
{
gdth_ha_str *ha = shost_priv(scp->device->host);
BUG_ON(!cmndinfo);
scp->scsi_done = done;
- gdth_update_timeout(scp, scp->timeout_per_command * 6);
+ cmndinfo->timeout_count = 0;
cmndinfo->priority = DEFAULT_PRI;
- gdth_set_bufflen(scp, scsi_bufflen(scp));
- gdth_set_sg_count(scp, scsi_sg_count(scp));
- gdth_set_sglist(scp, scsi_sglist(scp));
-
return __gdth_queuecommand(ha, scp, cmndinfo);
}
{
gdth_ha_str *ha;
+ lock_kernel();
list_for_each_entry(ha, &gdth_instances, list) {
if (!ha->sdev)
ha->sdev = scsi_get_host_dev(ha->shost);
}
+ unlock_kernel();
TRACE(("gdth_open()\n"));
return 0;
ha->hdr[j].lock = 1;
spin_unlock_irqrestore(&ha->smp_lock, flags);
gdth_wait_completion(ha, ha->bus_cnt, j);
- gdth_stop_timeout(ha, ha->bus_cnt, j);
} else {
spin_lock_irqsave(&ha->smp_lock, flags);
ha->hdr[j].lock = 0;
spin_unlock_irqrestore(&ha->smp_lock, flags);
- gdth_start_timeout(ha, ha->bus_cnt, j);
gdth_next(ha);
}
}
spin_lock_irqsave(&ha->smp_lock, flags);
ha->raw[i].lock = 1;
spin_unlock_irqrestore(&ha->smp_lock, flags);
- for (j = 0; j < ha->tid_cnt; ++j) {
+ for (j = 0; j < ha->tid_cnt; ++j)
gdth_wait_completion(ha, i, j);
- gdth_stop_timeout(ha, i, j);
- }
} else {
spin_lock_irqsave(&ha->smp_lock, flags);
ha->raw[i].lock = 0;
spin_unlock_irqrestore(&ha->smp_lock, flags);
- for (j = 0; j < ha->tid_cnt; ++j) {
- gdth_start_timeout(ha, i, j);
+ for (j = 0; j < ha->tid_cnt; ++j)
gdth_next(ha);
- }
}
}
break;
.slave_configure = gdth_slave_configure,
.bios_param = gdth_bios_param,
.proc_info = gdth_proc_info,
+ .eh_timed_out = gdth_timed_out,
.proc_name = "gdth",
.can_queue = GDTH_MAXCMDS,
.this_id = -1,
if (error)
goto out_free_coal_stat;
list_add_tail(&ha->list, &gdth_instances);
+ gdth_timer_init();
scsi_scan_host(shp);
if (error)
goto out_free_coal_stat;
list_add_tail(&ha->list, &gdth_instances);
+ gdth_timer_init();
scsi_scan_host(shp);
#endif /* CONFIG_EISA */
#ifdef CONFIG_PCI
-static int gdth_pci_probe_one(gdth_pci_str *pcistr,
+static int __devinit gdth_pci_probe_one(gdth_pci_str *pcistr,
gdth_ha_str **ha_out)
{
struct Scsi_Host *shp;
/* 64-bit DMA only supported from FW >= x.43 */
if (!(ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT) ||
!ha->dma64_support) {
- if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
+ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
printk(KERN_WARNING "GDT-PCI %d: "
"Unable to set 32-bit DMA\n", ha->hanum);
goto out_free_coal_stat;
}
} else {
shp->max_cmd_len = 16;
- if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
+ if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
printk("GDT-PCI %d: 64-bit DMA enabled\n", ha->hanum);
- } else if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
+ } else if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
printk(KERN_WARNING "GDT-PCI %d: "
"Unable to set 64/32-bit DMA\n", ha->hanum);
goto out_free_coal_stat;
list_add_tail(&ha->list, &gdth_instances);
pci_set_drvdata(ha->pdev, ha);
+ gdth_timer_init();
scsi_scan_host(shp);
/* initializations */
gdth_polling = TRUE;
gdth_clear_events();
+ init_timer(&gdth_timer);
/* As default we do not probe for EISA or ISA controllers */
if (probe_eisa_isa) {
#ifdef CONFIG_PCI
/* scanning for PCI controllers */
- if (pci_register_driver(&gdth_pci_driver) == 0)
- gdth_pci_registered = true;
+ if (pci_register_driver(&gdth_pci_driver)) {
+ gdth_ha_str *ha;
+
+ list_for_each_entry(ha, &gdth_instances, list)
+ gdth_remove_one(ha);
+ return -ENODEV;
+ }
#endif /* CONFIG_PCI */
TRACE2(("gdth_detect() %d controller detected\n", gdth_ctr_count));
- if (list_empty(&gdth_instances))
- return -ENODEV;
-
-#ifdef GDTH_STATISTICS
- TRACE2(("gdth_detect(): Initializing timer !\n"));
- init_timer(&gdth_timer);
- gdth_timer.expires = jiffies + HZ;
- gdth_timer.data = 0L;
- gdth_timer.function = gdth_timeout;
- add_timer(&gdth_timer);
-#endif
major = register_chrdev(0,"gdth", &gdth_fops);
register_reboot_notifier(&gdth_notifier);
gdth_polling = FALSE;
#endif
#ifdef CONFIG_PCI
- if (gdth_pci_registered)
- pci_unregister_driver(&gdth_pci_driver);
+ pci_unregister_driver(&gdth_pci_driver);
#endif
list_for_each_entry(ha, &gdth_instances, list)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff