From f6aae27ed002ba9c0a98aff811dbde32ce749d28 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 15 May 2006 20:58:27 +0900 Subject: [PATCH] [PATCH] sata_sil: convert to new EH 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_thaw() unmasks them. 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. Signed-off-by: Tejun Heo --- drivers/scsi/sata_sil.c | 49 ++++++++++++++++++++++++++++------------- 1 file changed, 34 insertions(+), 15 deletions(-) diff --git a/drivers/scsi/sata_sil.c b/drivers/scsi/sata_sil.c index bfcece18a7cb..aa63044eed2e 100644 --- a/drivers/scsi/sata_sil.c +++ b/drivers/scsi/sata_sil.c @@ -96,6 +96,8 @@ 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 void sil_post_set_mode (struct ata_port *ap); +static void sil_freeze(struct ata_port *ap); +static void sil_thaw(struct ata_port *ap); static const struct pci_device_id sil_pci_tbl[] = { @@ -174,7 +176,10 @@ static const struct ata_port_operations sil_ops = { .bmdma_status = ata_bmdma_status, .qc_prep = ata_qc_prep, .qc_issue = ata_qc_issue_prot, - .eng_timeout = ata_eng_timeout, + .freeze = sil_freeze, + .thaw = sil_thaw, + .error_handler = ata_bmdma_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, @@ -314,6 +319,33 @@ static void sil_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val) writel(val, mmio); } +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_thaw(struct ata_port *ap) +{ + void __iomem *mmio_base = ap->host_set->mmio_base; + u32 tmp; + + /* clear IRQ */ + ata_chk_status(ap); + ata_bmdma_irq_clear(ap); + + /* turn on IRQ */ + tmp = readl(mmio_base + SIL_SYSCFG); + tmp &= ~(SIL_MASK_IDE0_INT << ap->port_no); + writel(tmp, mmio_base + SIL_SYSCFG); +} + /** * sil_dev_config - Apply device/host-specific errata fixups * @ap: Port containing device to be examined @@ -384,7 +416,7 @@ static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) int rc; unsigned int i; int pci_dev_busy = 0; - u32 tmp, irq_mask; + u32 tmp; u8 cls; if (!printed_version++) @@ -474,24 +506,11 @@ static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) } 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 */ -- 2.20.1