[PATCH] sata_sil24: convert to new probing mechanism and add hotplug support
Convert to new probing mechanism and add hotplug support by enabling PORT_IRQ_PHYRDY_CHG, marking ehi for hotplug and scheduling EH on PORT_IRQ_PHYRDY_CHG or PORT_IRQ_DEV_XCHG. Sil3124/32 family of controllers don't have any mechanism to wait for the first D2H FIS after hotplug, so ATA_FLAG_SKIP_D2H_BSY is used. Signed-off-by: Tejun Heo <htejun@gmail.com>
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@ -159,7 +159,8 @@ enum {
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PORT_IRQ_SDB_NOTIFY = (1 << 11), /* SDB notify received */
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DEF_PORT_IRQ = PORT_IRQ_COMPLETE | PORT_IRQ_ERROR |
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PORT_IRQ_DEV_XCHG | PORT_IRQ_UNK_FIS,
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PORT_IRQ_PHYRDY_CHG | PORT_IRQ_DEV_XCHG |
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PORT_IRQ_UNK_FIS,
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/* bits[27:16] are unmasked (raw) */
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PORT_IRQ_RAW_SHIFT = 16,
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@ -228,7 +229,7 @@ enum {
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/* host flags */
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SIL24_COMMON_FLAGS = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
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ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
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ATA_FLAG_NCQ,
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ATA_FLAG_NCQ | ATA_FLAG_SKIP_D2H_BSY,
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SIL24_FLAG_PCIX_IRQ_WOC = (1 << 24), /* IRQ loss errata on PCI-X */
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IRQ_STAT_4PORTS = 0xf,
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@ -325,7 +326,6 @@ static u8 sil24_check_status(struct ata_port *ap);
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static u32 sil24_scr_read(struct ata_port *ap, unsigned sc_reg);
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static void sil24_scr_write(struct ata_port *ap, unsigned sc_reg, u32 val);
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static void sil24_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
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static int sil24_probe_reset(struct ata_port *ap, unsigned int *classes);
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static void sil24_qc_prep(struct ata_queued_cmd *qc);
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static unsigned int sil24_qc_issue(struct ata_queued_cmd *qc);
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static void sil24_irq_clear(struct ata_port *ap);
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@ -385,8 +385,6 @@ static const struct ata_port_operations sil24_ops = {
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.tf_read = sil24_tf_read,
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.probe_reset = sil24_probe_reset,
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.qc_prep = sil24_qc_prep,
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.qc_issue = sil24_qc_issue,
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@ -635,13 +633,6 @@ static int sil24_hardreset(struct ata_port *ap, unsigned int *class)
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return -EIO;
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}
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static int sil24_probe_reset(struct ata_port *ap, unsigned int *classes)
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{
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return ata_drive_probe_reset(ap, ata_std_probeinit,
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sil24_softreset, sil24_hardreset,
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ata_std_postreset, classes);
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}
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static inline void sil24_fill_sg(struct ata_queued_cmd *qc,
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struct sil24_sge *sge)
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{
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@ -772,13 +763,11 @@ static void sil24_error_intr(struct ata_port *ap)
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ata_ehi_push_desc(ehi, "irq_stat 0x%08x", irq_stat);
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if (irq_stat & PORT_IRQ_DEV_XCHG) {
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ehi->err_mask |= AC_ERR_ATA_BUS;
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/* sil24 doesn't recover very well from phy
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* disconnection with a softreset. Force hardreset.
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*/
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ehi->action |= ATA_EH_HARDRESET;
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ata_ehi_push_desc(ehi, ", device_exchanged");
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if (irq_stat & (PORT_IRQ_PHYRDY_CHG | PORT_IRQ_DEV_XCHG)) {
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ata_ehi_hotplugged(ehi);
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ata_ehi_push_desc(ehi, ", %s",
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irq_stat & PORT_IRQ_PHYRDY_CHG ?
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"PHY RDY changed" : "device exchanged");
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freeze = 1;
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}
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