This puts winbond VLB in with the other ISA/VLB support and means we can
lose pata_winbond.c. With all the VLB/ISA probe in one space (and out of
the core libata) this makes legacy probing work sanely.
Also switch to devm_ for resource handling on the ports post probe
Signed-off-by: Alan Cox <alan@xxxxxxxxxx>
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.24-rc8-mm1/drivers/ata/pata_legacy.c linux-2.6.24-rc8-mm1/drivers/ata/pata_legacy.c
--- linux.vanilla-2.6.24-rc8-mm1/drivers/ata/pata_legacy.c 2008-01-19 14:47:56.000000000 +0000
+++ linux-2.6.24-rc8-mm1/drivers/ata/pata_legacy.c 2008-01-19 15:18:06.000000000 +0000
@@ -28,7 +28,6 @@
*
* Unsupported but docs exist:
* Appian/Adaptec AIC25VL01/Cirrus Logic PD7220
- * Winbond W83759A
*
* This driver handles legacy (that is "ISA/VLB side") IDE ports found
* on PC class systems. There are three hybrid devices that are exceptions
@@ -36,7 +35,7 @@
* the MPIIX where the tuning is PCI side but the IDE is "ISA side".
*
* Specific support is included for the ht6560a/ht6560b/opti82c611a/
- * opti82c465mv/promise 20230c/20630
+ * opti82c465mv/promise 20230c/20630/winbond83759A
*
* Use the autospeed and pio_mask options with:
* Appian ADI/2 aka CLPD7220 or AIC25VL01.
@@ -47,9 +46,6 @@
* For now use autospeed and pio_mask as above with the W83759A. This may
* change.
*
- * TODO
- * Merge existing pata_qdi driver
- *
*/
#include <linux/kernel.h>
@@ -64,7 +60,7 @@
#include <linux/platform_device.h>
#define DRV_NAME "pata_legacy"
-#define DRV_VERSION "0.5.5"
+#define DRV_VERSION "0.6.5"
#define NR_HOST 6
@@ -92,6 +88,7 @@
QDI6500 = 7,
QDI6580 = 8,
QDI6580DP = 9, /* Dual channel mode is different */
+ W83759A = 10,
UNKNOWN = -1
};
@@ -111,7 +108,8 @@
struct ata_port_operations *ops;
unsigned int pio_mask;
unsigned int flags;
- int (*setup)(struct legacy_probe *probe, struct legacy_data *data);
+ int (*setup)(struct platform_device *, struct legacy_probe *probe,
+ struct legacy_data *data);
};
static int legacy_port[NR_HOST] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 };
@@ -128,6 +126,8 @@
static int opti82c611a; /* Opti82c611A on primary 1, sec 2, both 3 */
static int opti82c46x; /* Opti 82c465MV present(pri/sec autodetect) */
static int qdi; /* Set to probe QDI controllers */
+static int winbond; /* Set to probe Winbond controllers,
+ give I/O port if non stdanard */
static int autospeed; /* Chip present which snoops speed changes */
static int pio_mask = 0x1F; /* PIO range for autospeed devices */
static int iordy_mask = 0xFFFFFFFF; /* Use iordy if available */
@@ -891,9 +891,7 @@
return ata_qc_issue_prot(qc);
}
-/* For the 6580 can we flip the FIFO on/off at this point ? */
-
-static unsigned int qdi_data_xfer(struct ata_device *adev, unsigned char *buf,
+static unsigned int vlb32_data_xfer(struct ata_device *adev, unsigned char *buf,
unsigned int buflen, int rw)
{
struct ata_port *ap = adev->link->ap;
@@ -922,6 +920,15 @@
return ata_data_xfer(adev, buf, buflen, rw);
}
+static int qdi_port(struct platform_device *dev,
+ struct legacy_probe *lp, struct legacy_data *ld)
+{
+ if (devm_request_region(&dev->dev, lp->private, 4, "qdi") == NULL)
+ return -EBUSY;
+ ld->timing = lp->private;
+ return 0;
+}
+
static struct ata_port_operations qdi6500_port_ops = {
.set_piomode = qdi6500_set_piomode,
@@ -940,7 +947,7 @@
.qc_prep = ata_qc_prep,
.qc_issue = qdi_qc_issue_prot,
- .data_xfer = qdi_data_xfer,
+ .data_xfer = vlb32_data_xfer,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
@@ -967,7 +974,7 @@
.qc_prep = ata_qc_prep,
.qc_issue = ata_qc_issue_prot,
- .data_xfer = qdi_data_xfer,
+ .data_xfer = vlb32_data_xfer,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
@@ -994,7 +1001,7 @@
.qc_prep = ata_qc_prep,
.qc_issue = qdi_qc_issue_prot,
- .data_xfer = qdi_data_xfer,
+ .data_xfer = vlb32_data_xfer,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
@@ -1003,6 +1010,97 @@
.port_start = ata_sff_port_start,
};
+static DEFINE_SPINLOCK(winbond_lock);
+
+static void winbond_writecfg(unsigned long port, u8 reg, u8 val)
+{
+ unsigned long flags;
+ spin_lock_irqsave(&winbond_lock, flags);
+ outb(reg, port + 0x01);
+ outb(val, port + 0x02);
+ spin_unlock_irqrestore(&winbond_lock, flags);
+}
+
+static u8 winbond_readcfg(unsigned long port, u8 reg)
+{
+ u8 val;
+
+ unsigned long flags;
+ spin_lock_irqsave(&winbond_lock, flags);
+ outb(reg, port + 0x01);
+ val = inb(port + 0x02);
+ spin_unlock_irqrestore(&winbond_lock, flags);
+
+ return val;
+}
+
+static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev)
+{
+ struct ata_timing t;
+ struct legacy_data *winbond = ap->host->private_data;
+ int active, recovery;
+ u8 reg;
+ int timing = 0x88 + (ap->port_no * 4) + (adev->devno * 2);
+
+ reg = winbond_readcfg(winbond->timing, 0x81);
+
+ /* Get the timing data in cycles */
+ if (reg & 0x40) /* Fast VLB bus, assume 50MHz */
+ ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000);
+ else
+ ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
+
+ active = (FIT(t.active, 3, 17) - 1) & 0x0F;
+ recovery = (FIT(t.recover, 1, 15) + 1) & 0x0F;
+ timing = (active << 4) | recovery;
+ winbond_writecfg(winbond->timing, timing, reg);
+
+ /* Load the setup timing */
+
+ reg = 0x35;
+ if (adev->class != ATA_DEV_ATA)
+ reg |= 0x08; /* FIFO off */
+ if (!ata_pio_need_iordy(adev))
+ reg |= 0x02; /* IORDY off */
+ reg |= (FIT(t.setup, 0, 3) << 6);
+ winbond_writecfg(winbond->timing, timing + 1, reg);
+}
+
+static int winbond_port(struct platform_device *dev,
+ struct legacy_probe *lp, struct legacy_data *ld)
+{
+ if (devm_request_region(&dev->dev, lp->private, 4, "winbond") == NULL)
+ return -EBUSY;
+ ld->timing = lp->private;
+ return 0;
+}
+
+static struct ata_port_operations winbond_port_ops = {
+ .set_piomode = winbond_set_piomode,
+
+ .tf_load = ata_tf_load,
+ .tf_read = ata_tf_read,
+ .check_status = ata_check_status,
+ .exec_command = ata_exec_command,
+ .dev_select = ata_std_dev_select,
+
+ .freeze = ata_bmdma_freeze,
+ .thaw = ata_bmdma_thaw,
+ .error_handler = ata_bmdma_error_handler,
+ .post_internal_cmd = ata_bmdma_post_internal_cmd,
+ .cable_detect = ata_cable_40wire,
+
+ .qc_prep = ata_qc_prep,
+ .qc_issue = ata_qc_issue_prot,
+
+ .data_xfer = vlb32_data_xfer,
+
+ .irq_clear = ata_bmdma_irq_clear,
+ .irq_on = ata_irq_on,
+
+ .port_start = ata_sff_port_start,
+};
+
static struct legacy_controller controllers[] = {
{"BIOS", &legacy_port_ops, 0x1F,
ATA_FLAG_NO_IORDY, NULL },
@@ -1019,11 +1117,13 @@
{"OPTI82C46X", &opti82c46x_port_ops, 0x0F,
0 , NULL },
{"QDI6500", &qdi6500_port_ops, 0x07,
- ATA_FLAG_NO_IORDY, NULL },
+ ATA_FLAG_NO_IORDY, qdi_port },
{"QDI6580", &qdi6580_port_ops, 0x1F,
- 0 , NULL },
+ 0 , qdi_port },
{"QDI6580DP", &qdi6580dp_port_ops, 0x1F,
- 0 , NULL }
+ 0 , qdi_port },
+ {"W83759A", &winbond_port_ops, 0x1F,
+ 0 , winbond_port }
};
/**
@@ -1034,10 +1134,26 @@
* check if the controller appears to be driveless at this point.
*/
-static int probe_chip_type(struct legacy_probe *probe)
+static __init int probe_chip_type(struct legacy_probe *probe)
{
int mask = 1 << probe->slot;
+ if (winbond && (probe->port == 0x1F0 || probe->port == 0x170)) {
+ u8 reg = winbond_readcfg(winbond, 0x81);
+ reg |= 0x80; /* jumpered mode off */
+ winbond_writecfg(winbond, 0x81, reg);
+ reg = winbond_readcfg(winbond, 0x83);
+ reg |= 0xF0; /* local control */
+ winbond_writecfg(winbond, 0x83, reg);
+ reg = winbond_readcfg(winbond, 0x85);
+ reg |= 0xF0; /* programmable timing */
+ winbond_writecfg(winbond, 0x85, reg);
+
+ reg = winbond_readcfg(winbond, 0x81);
+
+ if (reg & mask)
+ return W83759A;
+ }
if (probe->port == 0x1F0) {
unsigned long flags;
local_irq_save(flags);
@@ -1127,7 +1243,7 @@
if (!io_addr || !ctrl_addr)
goto fail;
if (controller->setup)
- if (controller->setup(probe, ld) < 0)
+ if (controller->setup(pdev, probe, ld) < 0)
goto fail;
host = ata_host_alloc(&pdev->dev, 1);
if (!host)
@@ -1141,7 +1257,7 @@
ap->ioaddr.altstatus_addr = ctrl_addr;
ap->ioaddr.ctl_addr = ctrl_addr;
ata_std_ports(&ap->ioaddr);
- ap->private_data = ld;
+ ap->host->private_data = ld;
ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io, io + 0x0206);
@@ -1164,9 +1280,6 @@
fail:
if (host)
ata_host_detach(host);
- /* FIXME: use devm for this */
- if (ld->timing)
- release_region(ld->timing, 2);
platform_device_unregister(pdev);
return ret;
}
@@ -1184,7 +1297,7 @@
* is the right driver anyway.
*/
-static void legacy_check_special_cases(struct pci_dev *p, int *primary,
+static void __init legacy_check_special_cases(struct pci_dev *p, int *primary,
int *secondary)
{
/* Cyrix CS5510 pre SFF MWDMA ATA on the bridge */
@@ -1249,11 +1362,9 @@
/* Check card type */
if ((r & 0xF0) == 0xC0) {
/* QD6500: single channel */
- if (r & 8) {
+ if (r & 8)
/* Disabled ? */
- release_region(port, 2);
return;
- }
legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01),
QDI6500, port);
}
@@ -1273,6 +1384,7 @@
/* port + 0x02, r & 0x04 */
legacy_probe_add(0x170, 15, QDI6580DP, port + 2);
}
+ release_region(port + 2, 2);
}
}
@@ -1315,11 +1427,9 @@
r = inb(port + 1);
udelay(1);
/* Check port agrees with port set */
- if ((r & 2) >> 1 != i) {
- release_region(port, 2);
- continue;
- }
- qdi65_identify_port(r, res, port);
+ if ((r & 2) >> 1 == i)
+ qdi65_identify_port(r, res, port);
+ release_region(port, 2);
}
}
}
@@ -1364,6 +1474,9 @@
legacy ports */
pci_present = 1;
}
+
+ if (winbond == 1)
+ winbond = 0x130; /* Default port, alt is 1B0 */
if (primary == 0 || all)
legacy_probe_add(0x1F0, 14, UNKNOWN, 0);
@@ -1383,7 +1496,6 @@
if (qdi)
probe_qdi_vlb();
-
for (i = 0; i < NR_HOST; i++, pl++) {
if (pl->port == 0)
continue;
@@ -1406,8 +1518,6 @@
struct legacy_data *ld = &legacy_data[i];
ata_host_detach(legacy_host[i]);
platform_device_unregister(ld->platform_dev);
- if (ld->timing)
- release_region(ld->timing, 2);
}
}
-
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