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pata_legacy: resychronize with upstream changes and resubmit

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Update the legacy driver so it can handle VLB ports nicely, and has an
internal structure for nailing new ISA/VLB forms in.  Anyone got an ALI14xx
and a spare day ;)

Also adds an "all" parameter so you can load this driver after all the PCI
ones in a boot time kernel and tell it to grab anything ST412 compatible
even if it is an unknown PCI device.  That allows libata to offer the same
"just get me a disk somehow" fallback that old IDE did.

Obsoletes pata_qdi.

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Alan Cox 2008-01-10 14:33:10 -08:00 committed by Jeff Garzik
parent c294f1b329
commit defc9cd826
1 changed files with 607 additions and 147 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

742
drivers/ata/pata_legacy.c
View file

@ -68,8 +68,9 @@
#define NR_HOST 6 #define NR_HOST 6
static int legacy_port[NR_HOST] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 }; static int all;
static int legacy_irq[NR_HOST] = { 14, 15, 11, 10, 8, 12 }; module_param(all, int, 0444);
MODULE_PARM_DESC(all, "Grab all legacy port devices, even if PCI(0=off, 1=on)");
struct legacy_data { struct legacy_data {
unsigned long timing; unsigned long timing;
@ -80,20 +81,102 @@ struct legacy_data {
}; };
enum controller {
BIOS = 0,
SNOOP = 1,
PDC20230 = 2,
HT6560A = 3,
HT6560B = 4,
OPTI611A = 5,
OPTI46X = 6,
QDI6500 = 7,
QDI6580 = 8,
QDI6580DP = 9, /* Dual channel mode is different */
UNKNOWN = -1
};
struct legacy_probe {
unsigned char *name;
unsigned long port;
unsigned int irq;
unsigned int slot;
enum controller type;
unsigned long private;
};
struct legacy_controller {
const char *name;
struct ata_port_operations *ops;
unsigned int pio_mask;
unsigned int flags;
int (*setup)(struct legacy_probe *probe, struct legacy_data *data);
};
static int legacy_port[NR_HOST] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 };
static struct legacy_probe probe_list[NR_HOST];
static struct legacy_data legacy_data[NR_HOST]; static struct legacy_data legacy_data[NR_HOST];
static struct ata_host *legacy_host[NR_HOST]; static struct ata_host *legacy_host[NR_HOST];
static int nr_legacy_host; static int nr_legacy_host;
static int probe_all; /* Set to check all ISA port ranges */ static int probe_all; /* Set to check all ISA port ranges */
static int ht6560a; /* HT 6560A on primary 1, secondary 2, both 3 */ static int ht6560a; /* HT 6560A on primary 1, second 2, both 3 */
static int ht6560b; /* HT 6560A on primary 1, secondary 2, both 3 */ static int ht6560b; /* HT 6560A on primary 1, second 2, both 3 */
static int opti82c611a; /* Opti82c611A on primary 1, secondary 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 opti82c46x; /* Opti 82c465MV present(pri/sec autodetect) */
static int qdi; /* Set to probe QDI controllers */
static int autospeed; /* Chip present which snoops speed changes */ static int autospeed; /* Chip present which snoops speed changes */
static int pio_mask = 0x1F; /* PIO range for autospeed devices */ static int pio_mask = 0x1F; /* PIO range for autospeed devices */
static int iordy_mask = 0xFFFFFFFF; /* Use iordy if available */ static int iordy_mask = 0xFFFFFFFF; /* Use iordy if available */
/**
* legacy_probe_add - Add interface to probe list
* @port: Controller port
* @irq: IRQ number
* @type: Controller type
* @private: Controller specific info
*
* Add an entry into the probe list for ATA controllers. This is used
* to add the default ISA slots and then to build up the table
* further according to other ISA/VLB/Weird device scans
*
* An I/O port list is used to keep ordering stable and sane, as we
* don't have any good way to talk about ordering otherwise
*/
static int legacy_probe_add(unsigned long port, unsigned int irq,
enum controller type, unsigned long private)
{
struct legacy_probe *lp = &probe_list[0];
int i;
struct legacy_probe *free = NULL;
for (i = 0; i < NR_HOST; i++) {
if (lp->port == 0 && free == NULL)
free = lp;
/* Matching port, or the correct slot for ordering */
if (lp->port == port || legacy_port[i] == port) {
free = lp;
break;
}
lp++;
}
if (free == NULL) {
printk(KERN_ERR "pata_legacy: Too many interfaces.\n");
return -1;
}
/* Fill in the entry for later probing */
free->port = port;
free->irq = irq;
free->type = type;
free->private = private;
return 0;
}
/** /**
* legacy_set_mode - mode setting * legacy_set_mode - mode setting
* @link: IDE link * @link: IDE link
@ -113,7 +196,8 @@ static int legacy_set_mode(struct ata_link *link, struct ata_device **unused)
ata_link_for_each_dev(dev, link) { ata_link_for_each_dev(dev, link) {
if (ata_dev_enabled(dev)) { if (ata_dev_enabled(dev)) {
ata_dev_printk(dev, KERN_INFO, "configured for PIO\n"); ata_dev_printk(dev, KERN_INFO,
"configured for PIO\n");
dev->pio_mode = XFER_PIO_0; dev->pio_mode = XFER_PIO_0;
dev->xfer_mode = XFER_PIO_0; dev->xfer_mode = XFER_PIO_0;
dev->xfer_shift = ATA_SHIFT_PIO; dev->xfer_shift = ATA_SHIFT_PIO;
@ -171,7 +255,7 @@ static struct ata_port_operations simple_port_ops = {
.irq_clear = ata_bmdma_irq_clear, .irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on, .irq_on = ata_irq_on,
.port_start = ata_port_start, .port_start = ata_sff_port_start,
}; };
static struct ata_port_operations legacy_port_ops = { static struct ata_port_operations legacy_port_ops = {
@ -198,15 +282,16 @@ static struct ata_port_operations legacy_port_ops = {
.irq_clear = ata_bmdma_irq_clear, .irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on, .irq_on = ata_irq_on,
.port_start = ata_port_start, .port_start = ata_sff_port_start,
}; };
/* /*
* Promise 20230C and 20620 support * Promise 20230C and 20620 support
* *
* This controller supports PIO0 to PIO2. We set PIO timings conservatively to * This controller supports PIO0 to PIO2. We set PIO timings
* allow for 50MHz Vesa Local Bus. The 20620 DMA support is weird being DMA to * conservatively to allow for 50MHz Vesa Local Bus. The 20620 DMA
* controller and PIO'd to the host and not supported. * support is weird being DMA to controller and PIO'd to the host
* and not supported.
*/ */
static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev) static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev)
@ -221,8 +306,7 @@ static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev)
local_irq_save(flags); local_irq_save(flags);
/* Unlock the control interface */ /* Unlock the control interface */
do do {
{
inb(0x1F5); inb(0x1F5);
outb(inb(0x1F2) | 0x80, 0x1F2); outb(inb(0x1F2) | 0x80, 0x1F2);
inb(0x1F2); inb(0x1F2);
@ -231,7 +315,7 @@ static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev)
inb(0x1F2); inb(0x1F2);
inb(0x1F2); inb(0x1F2);
} }
while((inb(0x1F2) & 0x80) && --tries); while ((inb(0x1F2) & 0x80) && --tries);
local_irq_restore(flags); local_irq_restore(flags);
@ -312,14 +396,14 @@ static struct ata_port_operations pdc20230_port_ops = {
.irq_clear = ata_bmdma_irq_clear, .irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on, .irq_on = ata_irq_on,
.port_start = ata_port_start, .port_start = ata_sff_port_start,
}; };
/* /*
* Holtek 6560A support * Holtek 6560A support
* *
* This controller supports PIO0 to PIO2 (no IORDY even though higher timings * This controller supports PIO0 to PIO2 (no IORDY even though higher
* can be loaded). * timings can be loaded).
*/ */
static void ht6560a_set_piomode(struct ata_port *ap, struct ata_device *adev) static void ht6560a_set_piomode(struct ata_port *ap, struct ata_device *adev)
@ -366,14 +450,14 @@ static struct ata_port_operations ht6560a_port_ops = {
.irq_clear = ata_bmdma_irq_clear, .irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on, .irq_on = ata_irq_on,
.port_start = ata_port_start, .port_start = ata_sff_port_start,
}; };
/* /*
* Holtek 6560B support * Holtek 6560B support
* *
* This controller supports PIO0 to PIO4. We honour the BIOS/jumper FIFO setting * This controller supports PIO0 to PIO4. We honour the BIOS/jumper FIFO
* unless we see an ATAPI device in which case we force it off. * setting unless we see an ATAPI device in which case we force it off.
* *
* FIXME: need to implement 2nd channel support. * FIXME: need to implement 2nd channel support.
*/ */
@ -400,7 +484,7 @@ static void ht6560b_set_piomode(struct ata_port *ap, struct ata_device *adev)
if (adev->class != ATA_DEV_ATA) { if (adev->class != ATA_DEV_ATA) {
u8 rconf = inb(0x3E6); u8 rconf = inb(0x3E6);
if (rconf & 0x24) { if (rconf & 0x24) {
rconf &= ~ 0x24; rconf &= ~0x24;
outb(rconf, 0x3E6); outb(rconf, 0x3E6);
} }
} }
@ -431,7 +515,7 @@ static struct ata_port_operations ht6560b_port_ops = {
.irq_clear = ata_bmdma_irq_clear, .irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on, .irq_on = ata_irq_on,
.port_start = ata_port_start, .port_start = ata_sff_port_start,
}; };
/* /*
@ -464,7 +548,8 @@ static u8 opti_syscfg(u8 reg)
* This controller supports PIO0 to PIO3. * This controller supports PIO0 to PIO3.
*/ */
static void opti82c611a_set_piomode(struct ata_port *ap, struct ata_device *adev) static void opti82c611a_set_piomode(struct ata_port *ap,
struct ata_device *adev)
{ {
u8 active, recover, setup; u8 active, recover, setup;
struct ata_timing t; struct ata_timing t;
@ -551,7 +636,7 @@ static struct ata_port_operations opti82c611a_port_ops = {
.irq_clear = ata_bmdma_irq_clear, .irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on, .irq_on = ata_irq_on,
.port_start = ata_port_start, .port_start = ata_sff_port_start,
}; };
/* /*
@ -683,77 +768,282 @@ static struct ata_port_operations opti82c46x_port_ops = {
.irq_clear = ata_bmdma_irq_clear, .irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on, .irq_on = ata_irq_on,
.port_start = ata_port_start, .port_start = ata_sff_port_start,
}; };
static void qdi6500_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
struct ata_timing t;
struct legacy_data *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 (qdi->fast) {
active = 8 - FIT(t.active, 1, 8);
recovery = 18 - FIT(t.recover, 3, 18);
} else {
active = 9 - FIT(t.active, 2, 9);
recovery = 15 - FIT(t.recover, 0, 15);
}
timing = (recovery << 4) | active | 0x08;
qdi->clock[adev->devno] = timing;
outb(timing, qdi->timing);
}
/** /**
* legacy_init_one - attach a legacy interface * qdi6580dp_set_piomode - PIO setup for dual channel
* @port: port number * @ap: Port
* @io: I/O port start * @adev: Device
* @ctrl: control port
* @irq: interrupt line * @irq: interrupt line
* *
* Register an ISA bus IDE interface. Such interfaces are PIO and we * In dual channel mode the 6580 has one clock per channel and we have
* assume do not support IRQ sharing. * to software clockswitch in qc_issue_prot.
*/ */
static __init int legacy_init_one(int port, unsigned long io, unsigned long ctrl, int irq) static void qdi6580dp_set_piomode(struct ata_port *ap, struct ata_device *adev)
{ {
struct legacy_data *ld = &legacy_data[nr_legacy_host]; struct ata_timing t;
struct ata_host *host; struct legacy_data *qdi = ap->host->private_data;
struct ata_port *ap; int active, recovery;
struct platform_device *pdev; u8 timing;
struct ata_port_operations *ops = &legacy_port_ops;
void __iomem *io_addr, *ctrl_addr;
int pio_modes = pio_mask;
u32 mask = (1 << port);
u32 iordy = (iordy_mask & mask) ? 0: ATA_FLAG_NO_IORDY;
int ret;
pdev = platform_device_register_simple(DRV_NAME, nr_legacy_host, NULL, 0); /* Get the timing data in cycles */
if (IS_ERR(pdev)) ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000);
return PTR_ERR(pdev);
ret = -EBUSY; if (qdi->fast) {
if (devm_request_region(&pdev->dev, io, 8, "pata_legacy") == NULL || active = 8 - FIT(t.active, 1, 8);
devm_request_region(&pdev->dev, ctrl, 1, "pata_legacy") == NULL) recovery = 18 - FIT(t.recover, 3, 18);
goto fail; } else {
active = 9 - FIT(t.active, 2, 9);
ret = -ENOMEM; recovery = 15 - FIT(t.recover, 0, 15);
io_addr = devm_ioport_map(&pdev->dev, io, 8);
ctrl_addr = devm_ioport_map(&pdev->dev, ctrl, 1);
if (!io_addr || !ctrl_addr)
goto fail;
if (ht6560a & mask) {
ops = &ht6560a_port_ops;
pio_modes = 0x07;
iordy = ATA_FLAG_NO_IORDY;
}
if (ht6560b & mask) {
ops = &ht6560b_port_ops;
pio_modes = 0x1F;
}
if (opti82c611a & mask) {
ops = &opti82c611a_port_ops;
pio_modes = 0x0F;
}
if (opti82c46x & mask) {
ops = &opti82c46x_port_ops;
pio_modes = 0x0F;
} }
timing = (recovery << 4) | active | 0x08;
/* Probe for automatically detectable controllers */ qdi->clock[adev->devno] = timing;
if (io == 0x1F0 && ops == &legacy_port_ops) { outb(timing, qdi->timing + 2 * ap->port_no);
/* Clear the FIFO */
if (adev->class != ATA_DEV_ATA)
outb(0x5F, qdi->timing + 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 *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 (qdi->fast) {
active = 8 - FIT(t.active, 1, 8);
recovery = 18 - FIT(t.recover, 3, 18);
} else {
active = 9 - FIT(t.active, 2, 9);
recovery = 15 - FIT(t.recover, 0, 15);
}
timing = (recovery << 4) | active | 0x08;
qdi->clock[adev->devno] = timing;
outb(timing, qdi->timing + 2 * adev->devno);
/* Clear the FIFO */
if (adev->class != ATA_DEV_ATA)
outb(0x5F, qdi->timing + 3);
}
/**
* qdi_qc_issue_prot - command issue
* @qc: command pending
*
* Called when the libata layer is about to issue a command. We wrap
* this interface so that we can load the correct ATA timings.
*/
static unsigned int qdi_qc_issue_prot(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
struct ata_device *adev = qc->dev;
struct legacy_data *qdi = ap->host->private_data;
if (qdi->clock[adev->devno] != qdi->last) {
if (adev->pio_mode) {
qdi->last = qdi->clock[adev->devno];
outb(qdi->clock[adev->devno], qdi->timing +
2 * ap->port_no);
}
}
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,
unsigned int buflen, int rw)
{
struct ata_port *ap = adev->link->ap;
int slop = buflen & 3;
if (ata_id_has_dword_io(adev->id)) {
if (rw == WRITE)
iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
else
ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
if (unlikely(slop)) {
u32 pad;
if (rw == WRITE) {
memcpy(&pad, buf + buflen - slop, slop);
pad = le32_to_cpu(pad);
iowrite32(pad, ap->ioaddr.data_addr);
} else {
pad = ioread32(ap->ioaddr.data_addr);
pad = cpu_to_le32(pad);
memcpy(buf + buflen - slop, &pad, slop);
}
}
return (buflen + 3) & ~3;
} else
return ata_data_xfer(adev, buf, buflen, rw);
}
static struct ata_port_operations qdi6500_port_ops = {
.set_piomode = qdi6500_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 = qdi_qc_issue_prot,
.data_xfer = qdi_data_xfer,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
};
static struct ata_port_operations qdi6580_port_ops = {
.set_piomode = qdi6580_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 = qdi_data_xfer,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.irq_on = ata_irq_on,
.port_start = ata_sff_port_start,
};
static struct ata_port_operations qdi6580dp_port_ops = {
.set_piomode = qdi6580dp_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 = qdi_qc_issue_prot,
.data_xfer = qdi_data_xfer,
.irq_handler = ata_interrupt,
.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 },
{"Snooping", &simple_port_ops, 0x1F,
0 , NULL },
{"PDC20230", &pdc20230_port_ops, 0x7,
ATA_FLAG_NO_IORDY, NULL },
{"HT6560A", &ht6560a_port_ops, 0x07,
ATA_FLAG_NO_IORDY, NULL },
{"HT6560B", &ht6560b_port_ops, 0x1F,
ATA_FLAG_NO_IORDY, NULL },
{"OPTI82C611A", &opti82c611a_port_ops, 0x0F,
0 , NULL },
{"OPTI82C46X", &opti82c46x_port_ops, 0x0F,
0 , NULL },
{"QDI6500", &qdi6500_port_ops, 0x07,
ATA_FLAG_NO_IORDY, NULL },
{"QDI6580", &qdi6580_port_ops, 0x1F,
0 , NULL },
{"QDI6580DP", &qdi6580dp_port_ops, 0x1F,
0 , NULL }
};
/**
* probe_chip_type - Discover controller
* @probe: Probe entry to check
*
* Probe an ATA port and identify the type of controller. We don't
* check if the controller appears to be driveless at this point.
*/
static int probe_chip_type(struct legacy_probe *probe)
{
int mask = 1 << probe->slot;
if (probe->port == 0x1F0) {
unsigned long flags; unsigned long flags;
local_irq_save(flags); local_irq_save(flags);
/* Probes */ /* Probes */
inb(0x1F5);
outb(inb(0x1F2) | 0x80, 0x1F2); outb(inb(0x1F2) | 0x80, 0x1F2);
inb(0x1F5);
inb(0x1F2); inb(0x1F2);
inb(0x3F6); inb(0x3F6);
inb(0x3F6); inb(0x3F6);
@ -762,29 +1052,83 @@ static __init int legacy_init_one(int port, unsigned long io, unsigned long ctrl
if ((inb(0x1F2) & 0x80) == 0) { if ((inb(0x1F2) & 0x80) == 0) {
/* PDC20230c or 20630 ? */ /* PDC20230c or 20630 ? */
printk(KERN_INFO "PDC20230-C/20630 VLB ATA controller detected.\n"); printk(KERN_INFO "PDC20230-C/20630 VLB ATA controller"
pio_modes = 0x07; " detected.\n");
ops = &pdc20230_port_ops;
iordy = ATA_FLAG_NO_IORDY;
udelay(100); udelay(100);
inb(0x1F5); inb(0x1F5);
local_irq_restore(flags);
return PDC20230;
} else { } else {
outb(0x55, 0x1F2); outb(0x55, 0x1F2);
inb(0x1F2); inb(0x1F2);
inb(0x1F2); inb(0x1F2);
if (inb(0x1F2) == 0x00) { if (inb(0x1F2) == 0x00)
printk(KERN_INFO "PDC20230-B VLB ATA controller detected.\n"); printk(KERN_INFO "PDC20230-B VLB ATA "
} "controller detected.\n");
local_irq_restore(flags);
return BIOS;
} }
local_irq_restore(flags); local_irq_restore(flags);
} }
if (ht6560a & mask)
return HT6560A;
if (ht6560b & mask)
return HT6560B;
if (opti82c611a & mask)
return OPTI611A;
if (opti82c46x & mask)
return OPTI46X;
if (autospeed & mask)
return SNOOP;
return BIOS;
}
/* Chip does mode setting by command snooping */
if (ops == &legacy_port_ops && (autospeed & mask)) /**
ops = &simple_port_ops; * legacy_init_one - attach a legacy interface
* @pl: probe record
*
* Register an ISA bus IDE interface. Such interfaces are PIO and we
* assume do not support IRQ sharing.
*/
static __init int legacy_init_one(struct legacy_probe *probe)
{
struct legacy_controller *controller = &controllers[probe->type];
int pio_modes = controller->pio_mask;
unsigned long io = probe->port;
u32 mask = (1 << probe->slot);
struct ata_port_operations *ops = controller->ops;
struct legacy_data *ld = &legacy_data[probe->slot];
struct ata_host *host = NULL;
struct ata_port *ap;
struct platform_device *pdev;
struct ata_device *dev;
void __iomem *io_addr, *ctrl_addr;
u32 iordy = (iordy_mask & mask) ? 0: ATA_FLAG_NO_IORDY;
int ret;
iordy |= controller->flags;
pdev = platform_device_register_simple(DRV_NAME, probe->slot, NULL, 0);
if (IS_ERR(pdev))
return PTR_ERR(pdev);
ret = -EBUSY;
if (devm_request_region(&pdev->dev, io, 8, "pata_legacy") == NULL ||
devm_request_region(&pdev->dev, io + 0x0206, 1,
"pata_legacy") == NULL)
goto fail;
ret = -ENOMEM; ret = -ENOMEM;
io_addr = devm_ioport_map(&pdev->dev, io, 8);
ctrl_addr = devm_ioport_map(&pdev->dev, io + 0x0206, 1);
if (!io_addr || !ctrl_addr)
goto fail;
if (controller->setup)
if (controller->setup(probe, ld) < 0)
goto fail;
host = ata_host_alloc(&pdev->dev, 1); host = ata_host_alloc(&pdev->dev, 1);
if (!host) if (!host)
goto fail; goto fail;
@ -799,17 +1143,30 @@ static __init int legacy_init_one(int port, unsigned long io, unsigned long ctrl
ata_std_ports(&ap->ioaddr); ata_std_ports(&ap->ioaddr);
ap->private_data = ld; ap->private_data = ld;
ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io, ctrl); ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io, io + 0x0206);
ret = ata_host_activate(host, irq, ata_interrupt, 0, &legacy_sht); ret = ata_host_activate(host, probe->irq, ata_interrupt, 0,
&legacy_sht);
if (ret) if (ret)
goto fail; goto fail;
ld->platform_dev = pdev;
legacy_host[nr_legacy_host++] = dev_get_drvdata(&pdev->dev); /* Nothing found means we drop the port as its probably not there */
ret = -ENODEV;
ata_link_for_each_dev(dev, &ap->link) {
if (!ata_dev_absent(dev)) {
legacy_host[probe->slot] = host;
ld->platform_dev = pdev; ld->platform_dev = pdev;
return 0; return 0;
}
}
fail: fail:
if (host)
ata_host_detach(host);
/* FIXME: use devm for this */
if (ld->timing)
release_region(ld->timing, 2);
platform_device_unregister(pdev); platform_device_unregister(pdev);
return ret; return ret;
} }
@ -820,13 +1177,15 @@ static __init int legacy_init_one(int port, unsigned long io, unsigned long ctrl
* @master: set this if we find an ATA master * @master: set this if we find an ATA master
* @master: set this if we find an ATA secondary * @master: set this if we find an ATA secondary
* *
* A small number of vendors implemented early PCI ATA interfaces on bridge logic * A small number of vendors implemented early PCI ATA interfaces
* without the ATA interface being PCI visible. Where we have a matching PCI driver * on bridge logic without the ATA interface being PCI visible.
* we must skip the relevant device here. If we don't know about it then the legacy * Where we have a matching PCI driver we must skip the relevant
* driver is the right driver anyway. * device here. If we don't know about it then the legacy driver
* is the right driver anyway.
*/ */
static void legacy_check_special_cases(struct pci_dev *p, int *primary, int *secondary) static void legacy_check_special_cases(struct pci_dev *p, int *primary,
int *secondary)
{ {
/* Cyrix CS5510 pre SFF MWDMA ATA on the bridge */ /* Cyrix CS5510 pre SFF MWDMA ATA on the bridge */
if (p->vendor == 0x1078 && p->device == 0x0000) { if (p->vendor == 0x1078 && p->device == 0x0000) {
@ -842,7 +1201,8 @@ static void legacy_check_special_cases(struct pci_dev *p, int *primary, int *sec
if (p->vendor == 0x8086 && p->device == 0x1234) { if (p->vendor == 0x8086 && p->device == 0x1234) {
u16 r; u16 r;
pci_read_config_word(p, 0x6C, &r); pci_read_config_word(p, 0x6C, &r);
if (r & 0x8000) { /* ATA port enabled */ if (r & 0x8000) {
/* ATA port enabled */
if (r & 0x4000) if (r & 0x4000)
*secondary = 1; *secondary = 1;
else else
@ -852,6 +1212,117 @@ static void legacy_check_special_cases(struct pci_dev *p, int *primary, int *sec
} }
} }
static __init void probe_opti_vlb(void)
{
/* If an OPTI 82C46X is present find out where the channels are */
static const char *optis[4] = {
"3/463MV", "5MV",
"5MVA", "5MVB"
};
u8 chans = 1;
u8 ctrl = (opti_syscfg(0x30) & 0xC0) >> 6;
opti82c46x = 3; /* Assume master and slave first */
printk(KERN_INFO DRV_NAME ": Opti 82C46%s chipset support.\n",
optis[ctrl]);
if (ctrl == 3)
chans = (opti_syscfg(0x3F) & 0x20) ? 2 : 1;
ctrl = opti_syscfg(0xAC);
/* Check enabled and this port is the 465MV port. On the
MVB we may have two channels */
if (ctrl & 8) {
if (chans == 2) {
legacy_probe_add(0x1F0, 14, OPTI46X, 0);
legacy_probe_add(0x170, 15, OPTI46X, 0);
}
if (ctrl & 4)
legacy_probe_add(0x170, 15, OPTI46X, 0);
else
legacy_probe_add(0x1F0, 14, OPTI46X, 0);
} else
legacy_probe_add(0x1F0, 14, OPTI46X, 0);
}
static __init void qdi65_identify_port(u8 r, u8 res, unsigned long port)
{
static const unsigned long ide_port[2] = { 0x170, 0x1F0 };
/* Check card type */
if ((r & 0xF0) == 0xC0) {
/* QD6500: single channel */
if (r & 8) {
/* Disabled ? */
release_region(port, 2);
return;
}
legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01),
QDI6500, port);
}
if (((r & 0xF0) == 0xA0) || (r & 0xF0) == 0x50) {
/* QD6580: dual channel */
if (!request_region(port + 2 , 2, "pata_qdi")) {
release_region(port, 2);
return;
}
res = inb(port + 3);
/* Single channel mode ? */
if (res & 1)
legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01),
QDI6580, port);
else { /* Dual channel mode */
legacy_probe_add(0x1F0, 14, QDI6580DP, port);
/* port + 0x02, r & 0x04 */
legacy_probe_add(0x170, 15, QDI6580DP, port + 2);
}
}
}
static __init void probe_qdi_vlb(void)
{
unsigned long flags;
static const unsigned long qd_port[2] = { 0x30, 0xB0 };
int i;
/*
* Check each possible QD65xx base address
*/
for (i = 0; i < 2; i++) {
unsigned long port = qd_port[i];
u8 r, res;
if (request_region(port, 2, "pata_qdi")) {
/* Check for a card */
local_irq_save(flags);
/* I have no h/w that needs this delay but it
is present in the historic code */
r = inb(port);
udelay(1);
outb(0x19, port);
udelay(1);
res = inb(port);
udelay(1);
outb(r, port);
udelay(1);
local_irq_restore(flags);
/* Fail */
if (res == 0x19) {
release_region(port, 2);
continue;
}
/* Passes the presence test */
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);
}
}
}
/** /**
* legacy_init - attach legacy interfaces * legacy_init - attach legacy interfaces
@ -869,15 +1340,17 @@ static __init int legacy_init(void)
int ct = 0; int ct = 0;
int primary = 0; int primary = 0;
int secondary = 0; int secondary = 0;
int last_port = NR_HOST; int pci_present = 0;
struct legacy_probe *pl = &probe_list[0];
int slot = 0;
struct pci_dev *p = NULL; struct pci_dev *p = NULL;
for_each_pci_dev(p) { for_each_pci_dev(p) {
int r; int r;
/* Check for any overlap of the system ATA mappings. Native mode controllers /* Check for any overlap of the system ATA mappings. Native
stuck on these addresses or some devices in 'raid' mode won't be found by mode controllers stuck on these addresses or some devices
the storage class test */ in 'raid' mode won't be found by the storage class test */
for (r = 0; r < 6; r++) { for (r = 0; r < 6; r++) {
if (pci_resource_start(p, r) == 0x1f0) if (pci_resource_start(p, r) == 0x1f0)
primary = 1; primary = 1;
@ -887,49 +1360,37 @@ static __init int legacy_init(void)
/* Check for special cases */ /* Check for special cases */
legacy_check_special_cases(p, &primary, &secondary); legacy_check_special_cases(p, &primary, &secondary);
/* If PCI bus is present then don't probe for tertiary legacy ports */ /* If PCI bus is present then don't probe for tertiary
if (probe_all == 0) legacy ports */
last_port = 2; pci_present = 1;
} }
/* If an OPTI 82C46X is present find out where the channels are */ if (primary == 0 || all)
if (opti82c46x) { legacy_probe_add(0x1F0, 14, UNKNOWN, 0);
static const char *optis[4] = { if (secondary == 0 || all)
"3/463MV", "5MV", legacy_probe_add(0x170, 15, UNKNOWN, 0);
"5MVA", "5MVB"
};
u8 chans = 1;
u8 ctrl = (opti_syscfg(0x30) & 0xC0) >> 6;
opti82c46x = 3; /* Assume master and slave first */ if (probe_all || !pci_present) {
printk(KERN_INFO DRV_NAME ": Opti 82C46%s chipset support.\n", optis[ctrl]); /* ISA/VLB extra ports */
if (ctrl == 3) legacy_probe_add(0x1E8, 11, UNKNOWN, 0);
chans = (opti_syscfg(0x3F) & 0x20) ? 2 : 1; legacy_probe_add(0x168, 10, UNKNOWN, 0);
ctrl = opti_syscfg(0xAC); legacy_probe_add(0x1E0, 8, UNKNOWN, 0);
/* Check enabled and this port is the 465MV port. On the legacy_probe_add(0x160, 12, UNKNOWN, 0);
MVB we may have two channels */
if (ctrl & 8) {
if (ctrl & 4)
opti82c46x = 2; /* Slave */
else
opti82c46x = 1; /* Master */
if (chans == 2)
opti82c46x = 3; /* Master and Slave */
} /* Slave only */
else if (chans == 1)
opti82c46x = 1;
} }
for (i = 0; i < last_port; i++) { if (opti82c46x)
/* Skip primary if we have seen a PCI one */ probe_opti_vlb();
if (i == 0 && primary == 1) if (qdi)
probe_qdi_vlb();
for (i = 0; i < NR_HOST; i++, pl++) {
if (pl->port == 0)
continue; continue;
/* Skip secondary if we have seen a PCI one */ if (pl->type == UNKNOWN)
if (i == 1 && secondary == 1) pl->type = probe_chip_type(pl);
continue; pl->slot = slot++;
if (legacy_init_one(i, legacy_port[i], if (legacy_init_one(pl) == 0)
legacy_port[i] + 0x0206,
legacy_irq[i]) == 0)
ct++; ct++;
} }
if (ct != 0) if (ct != 0)
@ -943,7 +1404,6 @@ static __exit void legacy_exit(void)
for (i = 0; i < nr_legacy_host; i++) { for (i = 0; i < nr_legacy_host; i++) {
struct legacy_data *ld = &legacy_data[i]; struct legacy_data *ld = &legacy_data[i];
ata_host_detach(legacy_host[i]); ata_host_detach(legacy_host[i]);
platform_device_unregister(ld->platform_dev); platform_device_unregister(ld->platform_dev);
if (ld->timing) if (ld->timing)
@ -962,9 +1422,9 @@ module_param(ht6560a, int, 0);
module_param(ht6560b, int, 0); module_param(ht6560b, int, 0);
module_param(opti82c611a, int, 0); module_param(opti82c611a, int, 0);
module_param(opti82c46x, int, 0); module_param(opti82c46x, int, 0);
module_param(qdi, int, 0);
module_param(pio_mask, int, 0); module_param(pio_mask, int, 0);
module_param(iordy_mask, int, 0); module_param(iordy_mask, int, 0);
module_init(legacy_init); module_init(legacy_init);
module_exit(legacy_exit); module_exit(legacy_exit);