From 4c9bf4e799ce06a7378f1196587084802a414c03 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 7 Apr 2008 22:47:20 +0900 Subject: [PATCH] libata: replace tf_read with qc_fill_rtf for non-SFF drivers Now that all SFF stuff is separated out of core layer, core layer doesn't call ops->tf_read directly. It gets called only via ops->qc_fill_rtf() for non-SFF drivers. This patch directly implements private ops->qc_fill_rtf() for non-SFF controllers and kill ops->tf_read(). This is much cleaner for non-SFF controllers as some of them have to cache SFF register values in private data structure and report the cached values via ops->tf_read(). Also, ops->tf_read() gets nasty for controllers which don't have clear notion of TF registers when operation is not in progress. As this change makes default ops->qc_fill_rtf unnecessary, move ata_sff_qc_fill_rtf() form ata_base_port_ops to ata_sff_port_ops where it belongs. Signed-off-by: Tejun Heo --- drivers/ata/ahci.c | 21 +++++++------ drivers/ata/libata-core.c | 1 - drivers/ata/libata-sff.c | 1 + drivers/ata/sata_fsl.c | 24 ++++++++------ drivers/ata/sata_sil24.c | 8 ----- drivers/scsi/ipr.c | 59 ++++++++++++++++++----------------- drivers/scsi/libsas/sas_ata.c | 17 +++++----- 7 files changed, 66 insertions(+), 65 deletions(-) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 1389c64e002..ad5b6f384ba 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -243,9 +243,9 @@ static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val); static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val); static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent); static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc); +static bool ahci_qc_fill_rtf(struct ata_queued_cmd *qc); static int ahci_port_start(struct ata_port *ap); 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 void ahci_freeze(struct ata_port *ap); @@ -295,10 +295,10 @@ static struct ata_port_operations ahci_ops = { .sff_check_status = ahci_check_status, .sff_check_altstatus = ahci_check_status, - .sff_tf_read = ahci_tf_read, .qc_defer = sata_pmp_qc_defer_cmd_switch, .qc_prep = ahci_qc_prep, .qc_issue = ahci_qc_issue, + .qc_fill_rtf = ahci_qc_fill_rtf, .freeze = ahci_freeze, .thaw = ahci_thaw, @@ -1473,14 +1473,6 @@ static u8 ahci_check_status(struct ata_port *ap) return readl(mmio + PORT_TFDATA) & 0xFF; } -static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf) -{ - struct ahci_port_priv *pp = ap->private_data; - u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG; - - ata_tf_from_fis(d2h_fis, tf); -} - static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl) { struct scatterlist *sg; @@ -1779,6 +1771,15 @@ static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc) return 0; } +static bool ahci_qc_fill_rtf(struct ata_queued_cmd *qc) +{ + struct ahci_port_priv *pp = qc->ap->private_data; + u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG; + + ata_tf_from_fis(d2h_fis, &qc->result_tf); + return true; +} + static void ahci_freeze(struct ata_port *ap) { void __iomem *port_mmio = ahci_port_base(ap); diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index dcc5a28e26c..e8598eeeec3 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -74,7 +74,6 @@ const unsigned long sata_deb_timing_hotplug[] = { 25, 500, 2000 }; const unsigned long sata_deb_timing_long[] = { 100, 2000, 5000 }; const struct ata_port_operations ata_base_port_ops = { - .qc_fill_rtf = ata_sff_qc_fill_rtf, .prereset = ata_std_prereset, .postreset = ata_std_postreset, .error_handler = ata_std_error_handler, diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index 5ae813f5442..8e6c78ac70f 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -44,6 +44,7 @@ const struct ata_port_operations ata_sff_port_ops = { .qc_prep = ata_sff_qc_prep, .qc_issue = ata_sff_qc_issue, + .qc_fill_rtf = ata_sff_qc_fill_rtf, .freeze = ata_sff_freeze, .thaw = ata_sff_thaw, diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c index 37482d4e883..e880b7ec060 100644 --- a/drivers/ata/sata_fsl.c +++ b/drivers/ata/sata_fsl.c @@ -464,6 +464,20 @@ static unsigned int sata_fsl_qc_issue(struct ata_queued_cmd *qc) return 0; } +static bool sata_fsl_qc_fill_rtf(struct ata_queued_cmd *qc) +{ + struct sata_fsl_port_priv *pp = qc->ap->private_data; + struct sata_fsl_host_priv *host_priv = qc->ap->host->private_data; + void __iomem *hcr_base = host_priv->hcr_base; + unsigned int tag = sata_fsl_tag(qc->tag, hcr_base); + struct command_desc *cd; + + cd = pp->cmdentry + tag; + + ata_tf_from_fis(cd->sfis, &qc->result_tf); + return true; +} + static int sata_fsl_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val) { @@ -580,13 +594,6 @@ static u8 sata_fsl_check_status(struct ata_port *ap) return pp->tf.command; } -static void sata_fsl_tf_read(struct ata_port *ap, struct ata_taskfile *tf) -{ - struct sata_fsl_port_priv *pp = ap->private_data; - - *tf = pp->tf; -} - static int sata_fsl_port_start(struct ata_port *ap) { struct device *dev = ap->host->dev; @@ -1193,10 +1200,9 @@ static const struct ata_port_operations sata_fsl_ops = { .sff_check_status = sata_fsl_check_status, .sff_check_altstatus = sata_fsl_check_status, - .sff_tf_read = sata_fsl_tf_read, - .qc_prep = sata_fsl_qc_prep, .qc_issue = sata_fsl_qc_issue, + .qc_fill_rtf = sata_fsl_qc_fill_rtf, .scr_read = sata_fsl_scr_read, .scr_write = sata_fsl_scr_write, diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c index 79952f825b4..51a7c06803d 100644 --- a/drivers/ata/sata_sil24.c +++ b/drivers/ata/sata_sil24.c @@ -344,7 +344,6 @@ static void sil24_dev_config(struct ata_device *dev); static u8 sil24_check_status(struct ata_port *ap); static int sil24_scr_read(struct ata_port *ap, unsigned sc_reg, u32 *val); static int 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); static int sil24_qc_defer(struct ata_queued_cmd *qc); static void sil24_qc_prep(struct ata_queued_cmd *qc); static unsigned int sil24_qc_issue(struct ata_queued_cmd *qc); @@ -404,7 +403,6 @@ static struct ata_port_operations sil24_ops = { .sff_check_status = sil24_check_status, .sff_check_altstatus = sil24_check_status, - .sff_tf_read = sil24_tf_read, .qc_defer = sil24_qc_defer, .qc_prep = sil24_qc_prep, .qc_issue = sil24_qc_issue, @@ -533,12 +531,6 @@ static int sil24_scr_write(struct ata_port *ap, unsigned sc_reg, u32 val) return -EINVAL; } -static void sil24_tf_read(struct ata_port *ap, struct ata_taskfile *tf) -{ - struct sil24_port_priv *pp = ap->private_data; - *tf = pp->tf; -} - static void sil24_config_port(struct ata_port *ap) { void __iomem *port = ap->ioaddr.cmd_addr; diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 2ecd3299152..b079f6c3371 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -5040,33 +5040,6 @@ static void ipr_ata_post_internal(struct ata_queued_cmd *qc) spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags); } -/** - * ipr_tf_read - Read the current ATA taskfile for the ATA port - * @ap: ATA port - * @tf: destination ATA taskfile - * - * Return value: - * none - **/ -static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf) -{ - struct ipr_sata_port *sata_port = ap->private_data; - struct ipr_ioasa_gata *g = &sata_port->ioasa; - - tf->feature = g->error; - tf->nsect = g->nsect; - tf->lbal = g->lbal; - tf->lbam = g->lbam; - tf->lbah = g->lbah; - tf->device = g->device; - tf->command = g->status; - tf->hob_nsect = g->hob_nsect; - tf->hob_lbal = g->hob_lbal; - tf->hob_lbam = g->hob_lbam; - tf->hob_lbah = g->hob_lbah; - tf->ctl = g->alt_status; -} - /** * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure * @regs: destination @@ -5244,6 +5217,35 @@ static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) return 0; } +/** + * ipr_qc_fill_rtf - Read result TF + * @qc: ATA queued command + * + * Return value: + * true + **/ +static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc) +{ + struct ipr_sata_port *sata_port = qc->ap->private_data; + struct ipr_ioasa_gata *g = &sata_port->ioasa; + struct ata_taskfile *tf = &qc->result_tf; + + tf->feature = g->error; + tf->nsect = g->nsect; + tf->lbal = g->lbal; + tf->lbam = g->lbam; + tf->lbah = g->lbah; + tf->device = g->device; + tf->command = g->status; + tf->hob_nsect = g->hob_nsect; + tf->hob_lbal = g->hob_lbal; + tf->hob_lbam = g->hob_lbam; + tf->hob_lbah = g->hob_lbah; + tf->ctl = g->alt_status; + + return true; +} + /** * ipr_ata_check_status - Return last ATA status * @ap: ATA port @@ -5277,10 +5279,9 @@ static struct ata_port_operations ipr_sata_ops = { .phy_reset = ipr_ata_phy_reset, .hardreset = ipr_sata_reset, .post_internal_cmd = ipr_ata_post_internal, - .sff_tf_read = ipr_tf_read, .qc_prep = ata_noop_qc_prep, .qc_issue = ipr_qc_issue, - .qc_fill_rtf = ata_sff_qc_fill_rtf, + .qc_fill_rtf = ipr_qc_fill_rtf, .port_start = ata_sas_port_start, .port_stop = ata_sas_port_stop }; diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c index 2ec255839dc..e81f2fd8ba8 100644 --- a/drivers/scsi/libsas/sas_ata.c +++ b/drivers/scsi/libsas/sas_ata.c @@ -225,6 +225,14 @@ static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc) return 0; } +static bool sas_ata_qc_fill_rtf(struct ata_queued_cmd *qc) +{ + struct domain_device *dev = qc->ap->private_data; + + memcpy(&qc->result_tf, &dev->sata_dev.tf, sizeof(qc->result_tf)); + return true; +} + static u8 sas_ata_check_status(struct ata_port *ap) { struct domain_device *dev = ap->private_data; @@ -292,12 +300,6 @@ static void sas_ata_post_internal(struct ata_queued_cmd *qc) } } -static void sas_ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf) -{ - struct domain_device *dev = ap->private_data; - memcpy(tf, &dev->sata_dev.tf, sizeof (*tf)); -} - static int sas_ata_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val) { @@ -353,10 +355,9 @@ static struct ata_port_operations sas_sata_ops = { .sff_dev_select = ata_noop_dev_select, .phy_reset = sas_ata_phy_reset, .post_internal_cmd = sas_ata_post_internal, - .sff_tf_read = sas_ata_tf_read, .qc_prep = ata_noop_qc_prep, .qc_issue = sas_ata_qc_issue, - .qc_fill_rtf = ata_sff_qc_fill_rtf, + .qc_fill_rtf = sas_ata_qc_fill_rtf, .port_start = ata_sas_port_start, .port_stop = ata_sas_port_stop, .scr_read = sas_ata_scr_read, -- 2.20.1