Convert sata_sil to new EH. As these controllers have hardware
interrupt mask and are known to have screaming interrupts issues, use
hardware IRQ masking for freezing. sil_freeze() masks interrupts for
the port and sil_postreset() thaws it. As ports are automatically
frozen before probing reset, there is no need to initialize interrupt
masks sil_init_onde(). Remove related code.
Other than freezing, sata_sil uses stock BMDMA EH routines.a
Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
---
drivers/scsi/sata_sil.c | 62 +++++++++++++++++++++++++++++++++++------------
1 files changed, 46 insertions(+), 16 deletions(-)
32a0f7961c59f9de17e29356f06a072367c64c43
diff --git a/drivers/scsi/sata_sil.c b/drivers/scsi/sata_sil.c
index f29c3e7..4b9b2d1 100644
--- a/drivers/scsi/sata_sil.c
+++ b/drivers/scsi/sata_sil.c
@@ -95,7 +95,10 @@ static int sil_init_one (struct pci_dev
static void sil_dev_config(struct ata_port *ap, struct ata_device *dev);
static u32 sil_scr_read (struct ata_port *ap, unsigned int sc_reg);
static void sil_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
+static int sil_probe_reset(struct ata_port *ap, unsigned int *classes);
static void sil_post_set_mode (struct ata_port *ap);
+static void sil_freeze(struct ata_port *ap);
+static void sil_error_handler(struct ata_port *ap);
static const struct pci_device_id sil_pci_tbl[] = {
@@ -167,7 +170,7 @@ static const struct ata_port_operations
.check_status = ata_check_status,
.exec_command = ata_exec_command,
.dev_select = ata_std_dev_select,
- .probe_reset = ata_std_probe_reset,
+ .probe_reset = sil_probe_reset,
.post_set_mode = sil_post_set_mode,
.bmdma_setup = ata_bmdma_setup,
.bmdma_start = ata_bmdma_start,
@@ -175,7 +178,9 @@ static const struct ata_port_operations
.bmdma_status = ata_bmdma_status,
.qc_prep = ata_qc_prep,
.qc_issue = ata_qc_issue_prot,
- .eng_timeout = ata_eng_timeout,
+ .freeze = sil_freeze,
+ .error_handler = sil_error_handler,
+ .post_internal_cmd = ata_bmdma_post_internal_cmd,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.scr_read = sil_scr_read,
@@ -315,6 +320,44 @@ static void sil_scr_write (struct ata_po
writel(val, mmio);
}
+static void sil_postreset(struct ata_port *ap, unsigned int *classes)
+{
+ void __iomem *mmio_base = ap->host_set->mmio_base;
+ u32 tmp;
+
+ ata_std_postreset(ap, classes);
+
+ /* everything is back to normal, turn on IRQ */
+ tmp = readl(mmio_base + SIL_SYSCFG);
+ tmp &= ~(SIL_MASK_IDE0_INT << ap->port_no);
+ writel(tmp, mmio_base + SIL_SYSCFG);
+}
+
+static int sil_probe_reset(struct ata_port *ap, unsigned int *classes)
+{
+ return ata_drive_probe_reset(ap, ata_std_probeinit,
+ ata_std_softreset, sata_std_hardreset,
+ sil_postreset, classes);
+}
+
+static void sil_freeze(struct ata_port *ap)
+{
+ void __iomem *mmio_base = ap->host_set->mmio_base;
+ u32 tmp;
+
+ /* plug IRQ */
+ tmp = readl(mmio_base + SIL_SYSCFG);
+ tmp |= SIL_MASK_IDE0_INT << ap->port_no;
+ writel(tmp, mmio_base + SIL_SYSCFG);
+ readl(mmio_base + SIL_SYSCFG); /* flush */
+}
+
+static void sil_error_handler(struct ata_port *ap)
+{
+ ata_bmdma_drive_eh(ap, ata_std_softreset, sata_std_hardreset,
+ sil_postreset);
+}
+
/**
* sil_dev_config - Apply device/host-specific errata fixups
* @ap: Port containing device to be examined
@@ -385,7 +428,7 @@ static int sil_init_one (struct pci_dev
int rc;
unsigned int i;
int pci_dev_busy = 0;
- u32 tmp, irq_mask;
+ u32 tmp;
u8 cls;
if (!printed_version++)
@@ -475,24 +518,11 @@ static int sil_init_one (struct pci_dev
}
if (ent->driver_data == sil_3114) {
- irq_mask = SIL_MASK_4PORT;
-
/* flip the magic "make 4 ports work" bit */
tmp = readl(mmio_base + sil_port[2].bmdma);
if ((tmp & SIL_INTR_STEERING) == 0)
writel(tmp | SIL_INTR_STEERING,
mmio_base + sil_port[2].bmdma);
-
- } else {
- irq_mask = SIL_MASK_2PORT;
- }
-
- /* make sure IDE0/1/2/3 interrupts are not masked */
- tmp = readl(mmio_base + SIL_SYSCFG);
- if (tmp & irq_mask) {
- tmp &= ~irq_mask;
- writel(tmp, mmio_base + SIL_SYSCFG);
- readl(mmio_base + SIL_SYSCFG); /* flush */
}
/* mask all SATA phy-related interrupts */
--
1.2.4
-
: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
