diff options
| author | David Milburn <dmilburn@redhat.com> | 2009-05-13 18:02:21 -0500 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2009-05-15 14:08:10 -0400 |
| commit | 19799bfc5da476ad72eecc5f0f9018c5d351cbd5 (patch) | |
| tree | 44dfb7e03f353e74ca37da20630ddc5eb1529ea9 /drivers/ata/sata_sx4.c | |
| parent | 67651ee5710c45ea62fae68b768d65395ccf47c2 (diff) | |
[libata] sata_sx4: fixup interrupt handling
Issuing ATA_CMD_SET_FEATURES (0xef) times out because
pdc20621_interrupt ignores command completion since
ATA_TFLAG_POLLING flag is set.
This has already been fixed for sata_promise:
commit 51b94d2a5a90d4800e74d7348bcde098a28f4fb3
Author: Tejun Heo <htejun@gmail.com>
Date: Fri Jun 8 13:46:55 2007 -0700
sata_promise: use TF interface for polling NODATA commands
Also, this patch includes Mikael's original patches:
http://marc.info/?l=linux-ide&m=121135828227724&w=2
http://marc.info/?l=linux-ide&m=121144512109826&w=2
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: David Milburn <dmilburn@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/sata_sx4.c')
| -rw-r--r-- | drivers/ata/sata_sx4.c | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/drivers/ata/sata_sx4.c b/drivers/ata/sata_sx4.c index 1ce98afa69b..eb05a3c82a9 100644 --- a/drivers/ata/sata_sx4.c +++ b/drivers/ata/sata_sx4.c @@ -687,8 +687,11 @@ static void pdc20621_packet_start(struct ata_queued_cmd *qc) static unsigned int pdc20621_qc_issue(struct ata_queued_cmd *qc) { switch (qc->tf.protocol) { - case ATA_PROT_DMA: case ATA_PROT_NODATA: + if (qc->tf.flags & ATA_TFLAG_POLLING) + break; + /*FALLTHROUGH*/ + case ATA_PROT_DMA: pdc20621_packet_start(qc); return 0; @@ -787,12 +790,7 @@ static inline unsigned int pdc20621_host_intr(struct ata_port *ap, static void pdc20621_irq_clear(struct ata_port *ap) { - struct ata_host *host = ap->host; - void __iomem *mmio = host->iomap[PDC_MMIO_BAR]; - - mmio += PDC_CHIP0_OFS; - - readl(mmio + PDC_20621_SEQMASK); + ioread8(ap->ioaddr.status_addr); } static irqreturn_t pdc20621_interrupt(int irq, void *dev_instance) @@ -877,14 +875,12 @@ static void pdc_freeze(struct ata_port *ap) static void pdc_thaw(struct ata_port *ap) { void __iomem *mmio = ap->ioaddr.cmd_addr; - void __iomem *mmio_base; u32 tmp; /* FIXME: start HDMA engine, if zero ATA engines running */ - /* reading SEQ mask register clears IRQ */ - mmio_base = ap->host->iomap[PDC_MMIO_BAR] + PDC_CHIP0_OFS; - readl(mmio_base + PDC_20621_SEQMASK); + /* clear IRQ */ + ioread8(ap->ioaddr.status_addr); /* turn IRQ back on */ tmp = readl(mmio + PDC_CTLSTAT); @@ -974,7 +970,7 @@ static int pdc_check_atapi_dma(struct ata_queued_cmd *qc) static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf) { WARN_ON(tf->protocol == ATA_PROT_DMA || - tf->protocol == ATA_PROT_NODATA); + tf->protocol == ATAPI_PROT_DMA); ata_sff_tf_load(ap, tf); } @@ -982,7 +978,7 @@ static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf) static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf) { WARN_ON(tf->protocol == ATA_PROT_DMA || - tf->protocol == ATA_PROT_NODATA); + tf->protocol == ATAPI_PROT_DMA); ata_sff_exec_command(ap, tf); } |