(I think this got missed first time around, so resubmitting here)
Here is an update to sata_qstor.c to enable full/proper
register access during eh_timeout handling.
Patch is against 2.6.11-rc5 + earlier sata_qstor cosmetic patch.
Signed-off-by: Mark Lord <[EMAIL PROTECTED]>
--
Mark Lord
Real-Time Remedies Inc.
[EMAIL PROTECTED]
--- linux-2.6.11-rc5+/drivers/scsi/sata_qstor.c 2005-02-24 11:28:33.000000000 -0500
+++ linux/drivers/scsi/sata_qstor.c 2005-02-28 11:19:31.000000000 -0500
@@ -38,7 +38,7 @@
#include <linux/libata.h>
#define DRV_NAME "sata_qstor"
-#define DRV_VERSION "0.03"
+#define DRV_VERSION "0.04"
enum {
QS_PORTS = 4,
@@ -120,6 +120,7 @@
static void qs_bmdma_stop(struct ata_port *ap);
static u8 qs_bmdma_status(struct ata_port *ap);
static void qs_irq_clear(struct ata_port *ap);
+static void qs_eng_timeout(struct ata_port *ap);
static Scsi_Host_Template qs_ata_sht = {
.module = THIS_MODULE,
@@ -152,7 +153,7 @@
.phy_reset = qs_phy_reset,
.qc_prep = qs_qc_prep,
.qc_issue = qs_qc_issue,
- .eng_timeout = ata_eng_timeout,
+ .eng_timeout = qs_eng_timeout,
.irq_handler = qs_intr,
.irq_clear = qs_irq_clear,
.scr_read = qs_scr_read,
@@ -212,7 +213,7 @@
/* nothing */
}
-static void qs_enter_reg_mode(struct ata_port *ap)
+static inline void qs_enter_reg_mode(struct ata_port *ap)
{
u8 __iomem *chan = ap->host_set->mmio_base + (ap->port_no * 0x4000);
@@ -220,17 +221,34 @@
readb(chan + QS_CCT_CTR0); /* flush */
}
-static void qs_phy_reset(struct ata_port *ap)
+static inline void qs_reset_channel_logic(struct ata_port *ap)
{
u8 __iomem *chan = ap->host_set->mmio_base + (ap->port_no * 0x4000);
- struct qs_port_priv *pp = ap->private_data;
- pp->state = qs_state_idle;
writeb(QS_CTR1_RCHN, chan + QS_CCT_CTR1);
+ readb(chan + QS_CCT_CTR0); /* flush */
qs_enter_reg_mode(ap);
+}
+
+static void qs_phy_reset(struct ata_port *ap)
+{
+ struct qs_port_priv *pp = ap->private_data;
+
+ pp->state = qs_state_idle;
+ qs_reset_channel_logic(ap);
sata_phy_reset(ap);
}
+static void qs_eng_timeout(struct ata_port *ap)
+{
+ struct qs_port_priv *pp = ap->private_data;
+
+ if (pp->state != qs_state_idle) /* healthy paranoia */
+ pp->state = qs_state_mmio;
+ qs_reset_channel_logic(ap);
+ ata_eng_timeout(ap);
+}
+
static u32 qs_scr_read (struct ata_port *ap, unsigned int sc_reg)
{
if (sc_reg > SCR_CONTROL)
