From e1211e3fa7fd05ff0d4f597fd37e40de8acc6784 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sat, 1 Apr 2006 01:38:18 +0900 Subject: [PATCH] libata: implement ata_dev_enabled and disabled() This patch renames ata_dev_present() to ata_dev_enabled() and adds ata_dev_disabled(). This is to discern the state where a device is present but disabled from not-present state. This disctinction is necessary when configuring transfer mode because device selection timing must not be violated even if a device fails to configure. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/scsi/libata-core.c | 24 ++++++++++++------------ drivers/scsi/libata-scsi.c | 4 ++-- drivers/scsi/sata_mv.c | 2 +- drivers/scsi/sata_sil.c | 2 +- include/linux/libata.h | 16 +++++++++++++--- 5 files changed, 29 insertions(+), 19 deletions(-) diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index 559abe4ea4e9..c10c550da38b 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -411,7 +411,7 @@ static const char *sata_spd_string(unsigned int spd) static void ata_dev_disable(struct ata_port *ap, struct ata_device *dev) { - if (ata_dev_present(dev)) { + if (ata_dev_enabled(dev)) { printk(KERN_WARNING "ata%u: dev %u disabled\n", ap->id, dev->devno); dev->class++; @@ -1222,7 +1222,7 @@ static int ata_dev_configure(struct ata_port *ap, struct ata_device *dev, unsigned int xfer_mask; int i, rc; - if (!ata_dev_present(dev)) { + if (!ata_dev_enabled(dev)) { DPRINTK("ENTER/EXIT (host %u, dev %u) -- nodev\n", ap->id, dev->devno); return 0; @@ -1401,7 +1401,7 @@ static int ata_bus_probe(struct ata_port *ap) dev->class = classes[i]; - if (!ata_dev_present(dev)) + if (!ata_dev_enabled(dev)) continue; WARN_ON(dev->id != NULL); @@ -1565,7 +1565,7 @@ void sata_phy_reset(struct ata_port *ap) struct ata_device *ata_dev_pair(struct ata_port *ap, struct ata_device *adev) { struct ata_device *pair = &ap->device[1 - adev->devno]; - if (!ata_dev_present(pair)) + if (!ata_dev_enabled(pair)) return NULL; return pair; } @@ -1778,7 +1778,7 @@ static int ata_host_set_pio(struct ata_port *ap) for (i = 0; i < ATA_MAX_DEVICES; i++) { struct ata_device *dev = &ap->device[i]; - if (!ata_dev_present(dev)) + if (!ata_dev_enabled(dev)) continue; if (!dev->pio_mode) { @@ -1802,7 +1802,7 @@ static void ata_host_set_dma(struct ata_port *ap) for (i = 0; i < ATA_MAX_DEVICES; i++) { struct ata_device *dev = &ap->device[i]; - if (!ata_dev_present(dev) || !dev->dma_mode) + if (!ata_dev_enabled(dev) || !dev->dma_mode) continue; dev->xfer_mode = dev->dma_mode; @@ -1830,7 +1830,7 @@ static void ata_set_mode(struct ata_port *ap) struct ata_device *dev = &ap->device[i]; unsigned int pio_mask, dma_mask; - if (!ata_dev_present(dev)) + if (!ata_dev_enabled(dev)) continue; ata_dev_xfermask(ap, dev); @@ -1858,7 +1858,7 @@ static void ata_set_mode(struct ata_port *ap) for (i = 0; i < ATA_MAX_DEVICES; i++) { struct ata_device *dev = &ap->device[i]; - if (!ata_dev_present(dev)) + if (!ata_dev_enabled(dev)) continue; rc = ata_dev_set_mode(ap, dev); @@ -2550,7 +2550,7 @@ int ata_dev_revalidate(struct ata_port *ap, struct ata_device *dev, u16 *id; int rc; - if (!ata_dev_present(dev)) + if (!ata_dev_enabled(dev)) return -ENODEV; class = dev->class; @@ -2679,7 +2679,7 @@ static void ata_dev_xfermask(struct ata_port *ap, struct ata_device *dev) /* FIXME: Use port-wide xfermask for now */ for (i = 0; i < ATA_MAX_DEVICES; i++) { struct ata_device *d = &ap->device[i]; - if (!ata_dev_present(d)) + if (!ata_dev_enabled(d)) continue; xfer_mask &= ata_pack_xfermask(d->pio_mask, d->mwdma_mask, d->udma_mask); @@ -4299,7 +4299,7 @@ int ata_device_resume(struct ata_port *ap, struct ata_device *dev) ap->flags &= ~ATA_FLAG_SUSPENDED; ata_set_mode(ap); } - if (!ata_dev_present(dev)) + if (!ata_dev_enabled(dev)) return 0; if (dev->class == ATA_DEV_ATA) ata_start_drive(ap, dev); @@ -4317,7 +4317,7 @@ int ata_device_resume(struct ata_port *ap, struct ata_device *dev) */ int ata_device_suspend(struct ata_port *ap, struct ata_device *dev, pm_message_t state) { - if (!ata_dev_present(dev)) + if (!ata_dev_enabled(dev)) return 0; if (dev->class == ATA_DEV_ATA) ata_flush_cache(ap, dev); diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index 53f5b0d9161c..c1a4b29a9ae1 100644 --- a/drivers/scsi/libata-scsi.c +++ b/drivers/scsi/libata-scsi.c @@ -2349,7 +2349,7 @@ ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev) (scsidev->lun != 0))) return NULL; - if (unlikely(!ata_dev_present(dev))) + if (unlikely(!ata_dev_enabled(dev))) return NULL; if (!atapi_enabled || (ap->flags & ATA_FLAG_NO_ATAPI)) { @@ -2743,7 +2743,7 @@ void ata_scsi_scan_host(struct ata_port *ap) for (i = 0; i < ATA_MAX_DEVICES; i++) { dev = &ap->device[i]; - if (ata_dev_present(dev)) + if (ata_dev_enabled(dev)) scsi_scan_target(&ap->host->shost_gendev, 0, i, 0, 0); } } diff --git a/drivers/scsi/sata_mv.c b/drivers/scsi/sata_mv.c index fa901fd65085..0f7d334aadcc 100644 --- a/drivers/scsi/sata_mv.c +++ b/drivers/scsi/sata_mv.c @@ -1991,7 +1991,7 @@ comreset_retry: tf.nsect = readb((void __iomem *) ap->ioaddr.nsect_addr); dev->class = ata_dev_classify(&tf); - if (!ata_dev_present(dev)) { + if (!ata_dev_enabled(dev)) { VPRINTK("Port disabled post-sig: No device present.\n"); ata_port_disable(ap); } diff --git a/drivers/scsi/sata_sil.c b/drivers/scsi/sata_sil.c index 18c296c56899..d6c7086a5379 100644 --- a/drivers/scsi/sata_sil.c +++ b/drivers/scsi/sata_sil.c @@ -264,7 +264,7 @@ static void sil_post_set_mode (struct ata_port *ap) for (i = 0; i < 2; i++) { dev = &ap->device[i]; - if (!ata_dev_present(dev)) + if (!ata_dev_enabled(dev)) dev_mode[i] = 0; /* PIO0/1/2 */ else if (dev->flags & ATA_DFLAG_PIO) dev_mode[i] = 1; /* PIO3/4 */ diff --git a/include/linux/libata.h b/include/linux/libata.h index 0d61357604d5..c6883ba8cba9 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -672,14 +672,24 @@ static inline unsigned int ata_tag_valid(unsigned int tag) return (tag < ATA_MAX_QUEUE) ? 1 : 0; } -static inline unsigned int ata_class_present(unsigned int class) +static inline unsigned int ata_class_enabled(unsigned int class) { return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI; } -static inline unsigned int ata_dev_present(const struct ata_device *dev) +static inline unsigned int ata_class_disabled(unsigned int class) { - return ata_class_present(dev->class); + return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP; +} + +static inline unsigned int ata_dev_enabled(const struct ata_device *dev) +{ + return ata_class_enabled(dev->class); +} + +static inline unsigned int ata_dev_disabled(const struct ata_device *dev) +{ + return ata_class_disabled(dev->class); } static inline u8 ata_chk_status(struct ata_port *ap) -- cgit v1.2.2