[PATCH 49/86] pata_legacy: unify QDI ->set_piomode methods

Bartlomiej Zolnierkiewicz
2009-11-25T17:08:53Z

From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] pata_legacy: unify QDI ->set_piomode methods

Add controller type field to struct legacy_data and then use it
to merge together all ->set_piomode methods for QDI controllers.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ata/pata_legacy.c | 98 ++++++++++------------------------------------
1 file changed, 23 insertions(+), 75 deletions(-)

Index: b/drivers/ata/pata_legacy.c
===================================================================
--- a/drivers/ata/pata_legacy.c
+++ b/drivers/ata/pata_legacy.c
@@ -76,15 +76,6 @@ static int all;
module_param(all, int, 0444);
MODULE_PARM_DESC(all, "Grab all legacy port devices, even if PCI(0=off, 1=on)");

-struct legacy_data {
- unsigned long timing;
- u8 clock[2];
- u8 last;
- int fast;
- struct platform_device *platform_dev;
-
-};
-
enum controller {
BIOS = 0,
SNOOP = 1,
@@ -101,6 +92,14 @@ enum controller {
UNKNOWN = -1
};

+struct legacy_data {
+ unsigned long timing;
+ u8 clock[2];
+ u8 last;
+ int fast;
+ enum controller type;
+ struct platform_device *platform_dev;
+};

struct legacy_probe {
unsigned char *name;
@@ -622,40 +621,20 @@ static struct ata_port_operations opti82
.qc_issue = opti82c46x_qc_issue,
};

-static void qdi6500_set_piomode(struct ata_port *ap, struct ata_device *adev)
-{
- struct ata_timing t;
- struct legacy_data *ld_qdi = ap->host->private_data;
- int active, recovery;
- u8 timing;
-
- /* Get the timing data in cycles */
- ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
-
- if (ld_qdi->fast) {
- active = 8 - clamp_val(t.active, 1, 8);
- recovery = 18 - clamp_val(t.recover, 3, 18);
- } else {
- active = 9 - clamp_val(t.active, 2, 9);
- recovery = 15 - clamp_val(t.recover, 0, 15);
- }
- timing = (recovery << 4) | active | 0x08;
-
- ld_qdi->clock[adev->devno] = timing;
-
- outb(timing, ld_qdi->timing);
-}
-
/**
- * qdi6580dp_set_piomode - PIO setup for dual channel
+ * qdi65x0_set_piomode - PIO setup for QDI65x0
* @ap: Port
* @adev: Device
*
+ * In single channel mode the 6580 has one clock per device and we can
+ * avoid the requirement to clock switch. We also have to load the timing
+ * into the right clock according to whether we are master or slave.
+ *
* In dual channel mode the 6580 has one clock per channel and we have
* to software clockswitch in qc_issue.
*/

-static void qdi6580dp_set_piomode(struct ata_port *ap, struct ata_device *adev)
+static void qdi65x0_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
struct ata_timing t;
struct legacy_data *ld_qdi = ap->host->private_data;
@@ -673,47 +652,15 @@ static void qdi6580dp_set_piomode(struct
recovery = 15 - clamp_val(t.recover, 0, 15);
}
timing = (recovery << 4) | active | 0x08;
-
ld_qdi->clock[adev->devno] = timing;

- outb(timing, ld_qdi->timing + 2 * ap->port_no);
- /* Clear the FIFO */
- if (adev->class != ATA_DEV_ATA)
- outb(0x5F, (ld_qdi->timing & 0xFFF0) + 3);
-}
-
-/**
- * qdi6580_set_piomode - PIO setup for single channel
- * @ap: Port
- * @adev: Device
- *
- * In single channel mode the 6580 has one clock per device and we can
- * avoid the requirement to clock switch. We also have to load the timing
- * into the right clock according to whether we are master or slave.
- */
-
-static void qdi6580_set_piomode(struct ata_port *ap, struct ata_device *adev)
-{
- struct ata_timing t;
- struct legacy_data *ld_qdi = ap->host->private_data;
- int active, recovery;
- u8 timing;
-
- /* Get the timing data in cycles */
- ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
+ if (ld_qdi->type == QDI6580)
+ outb(timing, ld_qdi->timing + 2 * adev->devno);
+ else
+ outb(timing, ld_qdi->timing + 2 * ap->port_no);

- if (ld_qdi->fast) {
- active = 8 - clamp_val(t.active, 1, 8);
- recovery = 18 - clamp_val(t.recover, 3, 18);
- } else {
- active = 9 - clamp_val(t.active, 2, 9);
- recovery = 15 - clamp_val(t.recover, 0, 15);
- }
- timing = (recovery << 4) | active | 0x08;
- ld_qdi->clock[adev->devno] = timing;
- outb(timing, ld_qdi->timing + 2 * adev->devno);
/* Clear the FIFO */
- if (adev->class != ATA_DEV_ATA)
+ if (ld_qdi->type != QDI6500 && adev->class != ATA_DEV_ATA)
outb(0x5F, (ld_qdi->timing & 0xFFF0) + 3);
}

@@ -780,20 +727,20 @@ static int qdi_port(struct platform_devi

static struct ata_port_operations qdi6500_port_ops = {
.inherits = &legacy_base_port_ops,
- .set_piomode = qdi6500_set_piomode,
+ .set_piomode = qdi65x0_set_piomode,
.qc_issue = qdi_qc_issue,
.sff_data_xfer = vlb32_data_xfer,
};

static struct ata_port_operations qdi6580_port_ops = {
.inherits = &legacy_base_port_ops,
- .set_piomode = qdi6580_set_piomode,
+ .set_piomode = qdi65x0_set_piomode,
.sff_data_xfer = vlb32_data_xfer,
};

static struct ata_port_operations qdi6580dp_port_ops = {
.inherits = &legacy_base_port_ops,
- .set_piomode = qdi6580dp_set_piomode,
+ .set_piomode = qdi65x0_set_piomode,
.qc_issue = qdi_qc_issue,
.sff_data_xfer = vlb32_data_xfer,
};
@@ -1013,6 +960,7 @@ static __init int legacy_init_one(struct
ctrl_addr = devm_ioport_map(&pdev->dev, io + 0x0206, 1);
if (!io_addr || !ctrl_addr)
goto fail;
+ ld->type = probe->type;
if (controller->setup)
if (controller->setup(pdev, probe, ld) < 0)
goto fail;