From 0169e284f6b6b263cc7c2ed25986b96cd6fda610 Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Sat, 29 Oct 2005 21:25:10 -0400 Subject: [PATCH] [libata] remove ata_chk_err(), ->check_err() hook. We now depend on ->tf_read() to provide us with the contents of the Error shadow register. --- drivers/scsi/ahci.c | 9 --------- drivers/scsi/libata-core.c | 41 +++++++++----------------------------- drivers/scsi/sata_mv.c | 18 ----------------- drivers/scsi/sata_sil24.c | 8 -------- include/linux/libata.h | 2 -- 5 files changed, 9 insertions(+), 69 deletions(-) diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c index fe8187d6f58b..03829aedfd39 100644 --- a/drivers/scsi/ahci.c +++ b/drivers/scsi/ahci.c @@ -192,7 +192,6 @@ static void ahci_port_stop(struct ata_port *ap); static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf); static void ahci_qc_prep(struct ata_queued_cmd *qc); static u8 ahci_check_status(struct ata_port *ap); -static u8 ahci_check_err(struct ata_port *ap); static inline int ahci_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc); static void ahci_remove_one (struct pci_dev *pdev); @@ -221,7 +220,6 @@ static const struct ata_port_operations ahci_ops = { .check_status = ahci_check_status, .check_altstatus = ahci_check_status, - .check_err = ahci_check_err, .dev_select = ata_noop_dev_select, .tf_read = ahci_tf_read, @@ -458,13 +456,6 @@ static u8 ahci_check_status(struct ata_port *ap) return readl(mmio + PORT_TFDATA) & 0xFF; } -static u8 ahci_check_err(struct ata_port *ap) -{ - void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr; - - return (readl(mmio + PORT_TFDATA) >> 8) & 0xFF; -} - static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf) { struct ahci_port_priv *pp = ap->private_data; diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index b1b1c6f01419..d2f71a2331bb 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -371,7 +371,7 @@ static void ata_tf_read_pio(struct ata_port *ap, struct ata_taskfile *tf) struct ata_ioports *ioaddr = &ap->ioaddr; tf->command = ata_check_status(ap); - tf->feature = ata_chk_err(ap); + tf->feature = inb(ioaddr->error_addr); tf->nsect = inb(ioaddr->nsect_addr); tf->lbal = inb(ioaddr->lbal_addr); tf->lbam = inb(ioaddr->lbam_addr); @@ -405,7 +405,7 @@ static void ata_tf_read_mmio(struct ata_port *ap, struct ata_taskfile *tf) struct ata_ioports *ioaddr = &ap->ioaddr; tf->command = ata_check_status(ap); - tf->feature = ata_chk_err(ap); + tf->feature = readb((void __iomem *)ioaddr->error_addr); tf->nsect = readb((void __iomem *)ioaddr->nsect_addr); tf->lbal = readb((void __iomem *)ioaddr->lbal_addr); tf->lbam = readb((void __iomem *)ioaddr->lbam_addr); @@ -525,30 +525,6 @@ u8 ata_altstatus(struct ata_port *ap) } -/** - * ata_chk_err - Read device error reg - * @ap: port where the device is - * - * Reads ATA taskfile error register for - * currently-selected device and return its value. - * - * Note: may NOT be used as the check_err() entry in - * ata_port_operations. - * - * LOCKING: - * Inherited from caller. - */ -u8 ata_chk_err(struct ata_port *ap) -{ - if (ap->ops->check_err) - return ap->ops->check_err(ap); - - if (ap->flags & ATA_FLAG_MMIO) { - return readb((void __iomem *) ap->ioaddr.error_addr); - } - return inb(ap->ioaddr.error_addr); -} - /** * ata_tf_to_fis - Convert ATA taskfile to SATA FIS structure * @tf: Taskfile to convert @@ -901,8 +877,8 @@ static u8 ata_dev_try_classify(struct ata_port *ap, unsigned int device) memset(&tf, 0, sizeof(tf)); - err = ata_chk_err(ap); ap->ops->tf_read(ap, &tf); + err = tf.feature; dev->class = ATA_DEV_NONE; @@ -1139,7 +1115,6 @@ static void ata_dev_identify(struct ata_port *ap, unsigned int device) unsigned int major_version; u16 tmp; unsigned long xfer_modes; - u8 status; unsigned int using_edd; DECLARE_COMPLETION(wait); struct ata_queued_cmd *qc; @@ -1193,8 +1168,11 @@ static void ata_dev_identify(struct ata_port *ap, unsigned int device) else wait_for_completion(&wait); - status = ata_chk_status(ap); - if (status & ATA_ERR) { + spin_lock_irqsave(&ap->host_set->lock, flags); + ap->ops->tf_read(ap, &qc->tf); + spin_unlock_irqrestore(&ap->host_set->lock, flags); + + if (qc->tf.command & ATA_ERR) { /* * arg! EDD works for all test cases, but seems to return * the ATA signature for some ATAPI devices. Until the @@ -1207,7 +1185,7 @@ static void ata_dev_identify(struct ata_port *ap, unsigned int device) * to have this problem. */ if ((using_edd) && (qc->tf.command == ATA_CMD_ID_ATA)) { - u8 err = ata_chk_err(ap); + u8 err = qc->tf.feature; if (err & ATA_ABORTED) { dev->class = ATA_DEV_ATAPI; qc->cursg = 0; @@ -4873,7 +4851,6 @@ EXPORT_SYMBOL_GPL(ata_tf_to_fis); EXPORT_SYMBOL_GPL(ata_tf_from_fis); EXPORT_SYMBOL_GPL(ata_check_status); EXPORT_SYMBOL_GPL(ata_altstatus); -EXPORT_SYMBOL_GPL(ata_chk_err); EXPORT_SYMBOL_GPL(ata_exec_command); EXPORT_SYMBOL_GPL(ata_port_start); EXPORT_SYMBOL_GPL(ata_port_stop); diff --git a/drivers/scsi/sata_mv.c b/drivers/scsi/sata_mv.c index 422e0b6f603a..dcef5fe8600b 100644 --- a/drivers/scsi/sata_mv.c +++ b/drivers/scsi/sata_mv.c @@ -258,7 +258,6 @@ struct mv_host_priv { static void mv_irq_clear(struct ata_port *ap); static u32 mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in); static void mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val); -static u8 mv_check_err(struct ata_port *ap); static void mv_phy_reset(struct ata_port *ap); static void mv_host_stop(struct ata_host_set *host_set); static int mv_port_start(struct ata_port *ap); @@ -296,7 +295,6 @@ static const struct ata_port_operations mv_ops = { .tf_load = ata_tf_load, .tf_read = ata_tf_read, .check_status = ata_check_status, - .check_err = mv_check_err, .exec_command = ata_exec_command, .dev_select = ata_std_dev_select, @@ -1184,22 +1182,6 @@ static irqreturn_t mv_interrupt(int irq, void *dev_instance, return IRQ_RETVAL(handled); } -/** - * mv_check_err - Return the error shadow register to caller. - * @ap: ATA channel to manipulate - * - * Marvell requires DMA to be stopped before accessing shadow - * registers. So we do that, then return the needed register. - * - * LOCKING: - * Inherited from caller. FIXME: protect mv_stop_dma with lock? - */ -static u8 mv_check_err(struct ata_port *ap) -{ - mv_stop_dma(ap); /* can't read shadow regs if DMA on */ - return readb((void __iomem *) ap->ioaddr.error_addr); -} - /** * mv_phy_reset - Perform eDMA reset followed by COMRESET * @ap: ATA channel to manipulate diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c index 51855d3bac64..e18a1e2bb65e 100644 --- a/drivers/scsi/sata_sil24.c +++ b/drivers/scsi/sata_sil24.c @@ -225,7 +225,6 @@ struct sil24_host_priv { }; static u8 sil24_check_status(struct ata_port *ap); -static u8 sil24_check_err(struct ata_port *ap); static u32 sil24_scr_read(struct ata_port *ap, unsigned sc_reg); static void sil24_scr_write(struct ata_port *ap, unsigned sc_reg, u32 val); static void sil24_tf_read(struct ata_port *ap, struct ata_taskfile *tf); @@ -280,7 +279,6 @@ static const struct ata_port_operations sil24_ops = { .check_status = sil24_check_status, .check_altstatus = sil24_check_status, - .check_err = sil24_check_err, .dev_select = ata_noop_dev_select, .tf_read = sil24_tf_read, @@ -363,12 +361,6 @@ static u8 sil24_check_status(struct ata_port *ap) return pp->tf.command; } -static u8 sil24_check_err(struct ata_port *ap) -{ - struct sil24_port_priv *pp = ap->private_data; - return pp->tf.feature; -} - static int sil24_scr_map[] = { [SCR_CONTROL] = 0, [SCR_STATUS] = 1, diff --git a/include/linux/libata.h b/include/linux/libata.h index 00a8a5738858..a4cce9936a80 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -347,7 +347,6 @@ struct ata_port_operations { void (*exec_command)(struct ata_port *ap, const struct ata_taskfile *tf); u8 (*check_status)(struct ata_port *ap); u8 (*check_altstatus)(struct ata_port *ap); - u8 (*check_err)(struct ata_port *ap); void (*dev_select)(struct ata_port *ap, unsigned int device); void (*phy_reset) (struct ata_port *ap); @@ -434,7 +433,6 @@ extern void ata_noop_dev_select (struct ata_port *ap, unsigned int device); extern void ata_std_dev_select (struct ata_port *ap, unsigned int device); extern u8 ata_check_status(struct ata_port *ap); extern u8 ata_altstatus(struct ata_port *ap); -extern u8 ata_chk_err(struct ata_port *ap); extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf); extern int ata_port_start (struct ata_port *ap); extern void ata_port_stop (struct ata_port *ap); -- GitLab