sata_promise: separate SATA and PATA ops
This patch changes sata_promise so that the PATA ports
on TX2plus chips are bound to the pdc_pata_ops structure.
This means that operations called from the SATA ops
structures don't need any SATA-vs-PATA tests any more.
Instead, operations that depend on a port being SATA or
PATA are separated into different procedures.
* pdc_cable_type() is split into a PATA version and a
SATA version
* pdc_error_handler() is split into a PATA version and a
SATA version, that both call a common version after
setting up the `hardreset' function pointer
* pdc_old_check_atapi_dma() is now only used for SATAI
ports, so is renamed to pdc_old_sata_check_atapi_dma()
and simplified
* pdc_sata_scr_{read,write}() are now only used for SATA
ports, so their is-not-SATA tests are removed
* pdc_port_start() is split into three procedures: a wrapper
which performs the ->ops adjustment on TX2plus PATA ports,
a procedure with the common code, and a procedure with
the SATA-specific code (this bit might be cleaned up by
Tejun's new init model)
Tested on 20619, 20575, and 20775 chips.
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Mikael Pettersson
Jeff Garzik
Родитель
799331fda0
Коммит
724114a573
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@ -45,7 +45,7 @@
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#include "sata_promise.h"
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#define DRV_NAME "sata_promise"
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#define DRV_VERSION "2.02"
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#define DRV_VERSION "2.03"
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enum {
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@ -124,14 +124,16 @@ static void pdc_qc_prep(struct ata_queued_cmd *qc);
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static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
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static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
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static int pdc_check_atapi_dma(struct ata_queued_cmd *qc);
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static int pdc_old_check_atapi_dma(struct ata_queued_cmd *qc);
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static int pdc_old_sata_check_atapi_dma(struct ata_queued_cmd *qc);
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static void pdc_irq_clear(struct ata_port *ap);
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static unsigned int pdc_qc_issue_prot(struct ata_queued_cmd *qc);
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static void pdc_freeze(struct ata_port *ap);
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static void pdc_thaw(struct ata_port *ap);
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static void pdc_error_handler(struct ata_port *ap);
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static void pdc_pata_error_handler(struct ata_port *ap);
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static void pdc_sata_error_handler(struct ata_port *ap);
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static void pdc_post_internal_cmd(struct ata_queued_cmd *qc);
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static int pdc_cable_detect(struct ata_port *ap);
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static int pdc_pata_cable_detect(struct ata_port *ap);
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static int pdc_sata_cable_detect(struct ata_port *ap);
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static struct scsi_host_template pdc_ata_sht = {
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.module = THIS_MODULE,
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@ -164,9 +166,9 @@ static const struct ata_port_operations pdc_sata_ops = {
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.qc_issue = pdc_qc_issue_prot,
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.freeze = pdc_freeze,
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.thaw = pdc_thaw,
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.error_handler = pdc_error_handler,
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.error_handler = pdc_sata_error_handler,
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.post_internal_cmd = pdc_post_internal_cmd,
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.cable_detect = pdc_cable_detect,
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.cable_detect = pdc_sata_cable_detect,
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.data_xfer = ata_data_xfer,
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.irq_handler = pdc_interrupt,
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.irq_clear = pdc_irq_clear,
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@ -186,15 +188,15 @@ static const struct ata_port_operations pdc_old_sata_ops = {
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.check_status = ata_check_status,
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.exec_command = pdc_exec_command_mmio,
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.dev_select = ata_std_dev_select,
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.check_atapi_dma = pdc_old_check_atapi_dma,
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.check_atapi_dma = pdc_old_sata_check_atapi_dma,
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.qc_prep = pdc_qc_prep,
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.qc_issue = pdc_qc_issue_prot,
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.freeze = pdc_freeze,
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.thaw = pdc_thaw,
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.error_handler = pdc_error_handler,
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.error_handler = pdc_sata_error_handler,
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.post_internal_cmd = pdc_post_internal_cmd,
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.cable_detect = pdc_cable_detect,
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.cable_detect = pdc_sata_cable_detect,
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.data_xfer = ata_data_xfer,
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.irq_handler = pdc_interrupt,
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.irq_clear = pdc_irq_clear,
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@ -219,9 +221,9 @@ static const struct ata_port_operations pdc_pata_ops = {
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.qc_issue = pdc_qc_issue_prot,
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.freeze = pdc_freeze,
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.thaw = pdc_thaw,
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.error_handler = pdc_error_handler,
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.error_handler = pdc_pata_error_handler,
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.post_internal_cmd = pdc_post_internal_cmd,
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.cable_detect = pdc_cable_detect,
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.cable_detect = pdc_pata_cable_detect,
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.data_xfer = ata_data_xfer,
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.irq_handler = pdc_interrupt,
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.irq_clear = pdc_irq_clear,
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@ -316,18 +318,12 @@ static struct pci_driver pdc_ata_pci_driver = {
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};
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static int pdc_port_start(struct ata_port *ap)
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static int pdc_common_port_start(struct ata_port *ap)
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{
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struct device *dev = ap->host->dev;
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struct pdc_host_priv *hp = ap->host->private_data;
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struct pdc_port_priv *pp;
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int rc;
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/* fix up port flags and cable type for SATA+PATA chips */
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ap->flags |= hp->port_flags[ap->port_no];
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if (ap->flags & ATA_FLAG_SATA)
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ap->cbl = ATA_CBL_SATA;
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rc = ata_port_start(ap);
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if (rc)
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return rc;
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@ -342,8 +338,20 @@ static int pdc_port_start(struct ata_port *ap)
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ap->private_data = pp;
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return 0;
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}
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static int pdc_sata_port_start(struct ata_port *ap)
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{
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struct pdc_host_priv *hp = ap->host->private_data;
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int rc;
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rc = pdc_common_port_start(ap);
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if (rc)
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return rc;
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/* fix up PHYMODE4 align timing */
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if ((hp->flags & PDC_FLAG_GEN_II) && sata_scr_valid(ap)) {
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if (hp->flags & PDC_FLAG_GEN_II) {
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void __iomem *mmio = (void __iomem *) ap->ioaddr.scr_addr;
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unsigned int tmp;
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@ -355,6 +363,21 @@ static int pdc_port_start(struct ata_port *ap)
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return 0;
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}
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static int pdc_port_start(struct ata_port *ap)
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{
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struct pdc_host_priv *hp = ap->host->private_data;
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/* fix up port flags and cable type for SATA+PATA chips */
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ap->flags |= hp->port_flags[ap->port_no];
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if (ap->flags & ATA_FLAG_SATA) {
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ap->cbl = ATA_CBL_SATA;
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return pdc_sata_port_start(ap);
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} else {
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ap->ops = &pdc_pata_ops;
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return pdc_common_port_start(ap);
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}
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}
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static void pdc_reset_port(struct ata_port *ap)
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{
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void __iomem *mmio = ap->ioaddr.cmd_addr + PDC_CTLSTAT;
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@ -377,23 +400,25 @@ static void pdc_reset_port(struct ata_port *ap)
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readl(mmio); /* flush */
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}
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static int pdc_cable_detect(struct ata_port *ap)
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static int pdc_pata_cable_detect(struct ata_port *ap)
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{
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u8 tmp;
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void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr + PDC_CTLSTAT + 0x03;
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if (!sata_scr_valid(ap)) {
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tmp = readb(mmio);
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if (tmp & 0x01)
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return ATA_CBL_PATA40;
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return ATA_CBL_PATA80;
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}
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tmp = readb(mmio);
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if (tmp & 0x01)
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return ATA_CBL_PATA40;
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return ATA_CBL_PATA80;
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}
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static int pdc_sata_cable_detect(struct ata_port *ap)
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{
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return ATA_CBL_SATA;
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}
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static u32 pdc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg)
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{
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if (sc_reg > SCR_CONTROL || ap->cbl != ATA_CBL_SATA)
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if (sc_reg > SCR_CONTROL)
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return 0xffffffffU;
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return readl(ap->ioaddr.scr_addr + (sc_reg * 4));
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}
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@ -402,7 +427,7 @@ static u32 pdc_sata_scr_read (struct ata_port *ap, unsigned int sc_reg)
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static void pdc_sata_scr_write (struct ata_port *ap, unsigned int sc_reg,
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u32 val)
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{
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if (sc_reg > SCR_CONTROL || ap->cbl != ATA_CBL_SATA)
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if (sc_reg > SCR_CONTROL)
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return;
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writel(val, ap->ioaddr.scr_addr + (sc_reg * 4));
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}
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@ -558,22 +583,26 @@ static void pdc_thaw(struct ata_port *ap)
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readl(mmio + PDC_CTLSTAT); /* flush */
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}
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static void pdc_error_handler(struct ata_port *ap)
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static void pdc_common_error_handler(struct ata_port *ap, ata_reset_fn_t hardreset)
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{
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ata_reset_fn_t hardreset;
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if (!(ap->pflags & ATA_PFLAG_FROZEN))
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pdc_reset_port(ap);
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hardreset = NULL;
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if (sata_scr_valid(ap))
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hardreset = sata_std_hardreset;
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/* perform recovery */
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ata_do_eh(ap, ata_std_prereset, ata_std_softreset, hardreset,
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ata_std_postreset);
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}
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static void pdc_pata_error_handler(struct ata_port *ap)
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{
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pdc_common_error_handler(ap, NULL);
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}
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static void pdc_sata_error_handler(struct ata_port *ap)
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{
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pdc_common_error_handler(ap, sata_std_hardreset);
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}
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static void pdc_post_internal_cmd(struct ata_queued_cmd *qc)
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{
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struct ata_port *ap = qc->ap;
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@ -763,14 +792,10 @@ static int pdc_check_atapi_dma(struct ata_queued_cmd *qc)
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return pio;
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}
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static int pdc_old_check_atapi_dma(struct ata_queued_cmd *qc)
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static int pdc_old_sata_check_atapi_dma(struct ata_queued_cmd *qc)
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{
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struct ata_port *ap = qc->ap;
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/* First generation chips cannot use ATAPI DMA on SATA ports */
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if (sata_scr_valid(ap))
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return 1;
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return pdc_check_atapi_dma(qc);
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return 1;
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}
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static void pdc_ata_setup_port(struct ata_ioports *port, void __iomem *base,
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