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pata_legacy: Merge winbond support 

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@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Alan Cox 2008-01-19 15:47:23 +00:00 committed by Jeff Garzik
parent 5e8f757cb2
commit b832548773
1 changed files with 144 additions and 34 deletions
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178
drivers/ata/pata_legacy.c
View File

@ -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 @@ enum controller {
QDI6500 = 7,
QDI6580 = 8,
QDI6580DP = 9, /* Dual channel mode is different */
W83759A = 10,
UNKNOWN = -1
};
@ -111,7 +108,8 @@ struct legacy_controller {
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 ht6560b; /* HT 6560A on primary 1, second 2, both 3 */
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 @@ static unsigned int qdi_qc_issue_prot(struct ata_queued_cmd *qc)
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 @@ static unsigned int qdi_data_xfer(struct ata_device *adev, unsigned char *buf,
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 @@ static struct ata_port_operations qdi6500_port_ops = {
.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 @@ static struct ata_port_operations qdi6580_port_ops = {
.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 @@ static struct ata_port_operations qdi6580dp_port_ops = {
.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 @@ static struct ata_port_operations qdi6580dp_port_ops = {
.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 @@ static struct legacy_controller controllers[] = {
{"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 @@ static struct legacy_controller controllers[] = {
* 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 @@ static __init int legacy_init_one(struct legacy_probe *probe)
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 @@ static __init int legacy_init_one(struct legacy_probe *probe)
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 @@ static __init int legacy_init_one(struct legacy_probe *probe)
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 @@ fail:
* 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 @@ static __init void qdi65_identify_port(u8 r, u8 res, unsigned long port)
/* 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 @@ static __init void qdi65_identify_port(u8 r, u8 res, unsigned long port)
/* port + 0x02, r & 0x04 */
legacy_probe_add(0x170, 15, QDI6580DP, port + 2);
}
release_region(port + 2, 2);
}
}
@ -1315,11 +1427,9 @@ static __init void probe_qdi_vlb(void)
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);
}
}
}
@ -1365,6 +1475,9 @@ static __init int legacy_init(void)
pci_present = 1;
}
if (winbond == 1)
winbond = 0x130; /* Default port, alt is 1B0 */
if (primary == 0 || all)
legacy_probe_add(0x1F0, 14, UNKNOWN, 0);
if (secondary == 0 || all)
@ -1383,7 +1496,6 @@ static __init int legacy_init(void)
if (qdi)
probe_qdi_vlb();
for (i = 0; i < NR_HOST; i++, pl++) {
if (pl->port == 0)
continue;
@ -1406,8 +1518,6 @@ static __exit void legacy_exit(void)
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);
}
}