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ata: Report 16/32bit PIO as best we can

瀏覽代碼 
The legacy old IDE ioctl API for this is a bit primitive so we try
and map stuff sensibly onto it.

- Set PIO over DMA devices to report 32bit
- Add ability to change the PIO32 settings if the controller permits it
- Add that functionality into the sff drivers
- Add that functionality into the VLB legacy driver
- Turn on the 32bit PIO on the ninja32 and add support there

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Alan Cox
2009-04-09 17:31:17 +01:00
committed by Jeff Garzik
父節點 62afe5d744
當前提交 e3cf95dd6d
共有 5 個文件被更改，包括 84 次插入 和 18 次删除
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33
drivers/ata/pata_legacy.c
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@@ -108,6 +108,7 @@ struct legacy_controller {
struct ata_port_operations *ops;
unsigned int pio_mask;
unsigned int flags;
unsigned int pflags;
int (*setup)(struct platform_device *, struct legacy_probe *probe,
struct legacy_data *data);
};
@@ -285,7 +286,8 @@ static unsigned int pdc_data_xfer_vlb(struct ata_device *dev,
{
int slop = buflen & 3;
/* 32bit I/O capable *and* we need to write a whole number of dwords */
if (ata_id_has_dword_io(dev->id) && (slop == 0 || slop == 3)) {
if (ata_id_has_dword_io(dev->id) && (slop == 0 || slop == 3)
&& (ap->pflags & ATA_PFLAG_PIO32)) {
struct ata_port *ap = dev->link->ap;
unsigned long flags;
@@ -736,7 +738,8 @@ static unsigned int vlb32_data_xfer(struct ata_device *adev, unsigned char *buf,
struct ata_port *ap = adev->link->ap;
int slop = buflen & 3;
if (ata_id_has_dword_io(adev->id) && (slop == 0 || slop == 3)) {
if (ata_id_has_dword_io(adev->id) && (slop == 0 || slop == 3)
&& (ap->pflags & ATA_PFLAG_PIO32)) {
if (rw == WRITE)
iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2);
else
@@ -858,27 +861,30 @@ static struct ata_port_operations winbond_port_ops = {
static struct legacy_controller controllers[] = {
{"BIOS", &legacy_port_ops, 0x1F,
ATA_FLAG_NO_IORDY, NULL },
ATA_FLAG_NO_IORDY, 0, NULL },
{"Snooping", &simple_port_ops, 0x1F,
0 , NULL },
0, 0, NULL },
{"PDC20230", &pdc20230_port_ops, 0x7,
ATA_FLAG_NO_IORDY, NULL },
ATA_FLAG_NO_IORDY,
ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32_CHANGE, NULL },
{"HT6560A", &ht6560a_port_ops, 0x07,
ATA_FLAG_NO_IORDY, NULL },
ATA_FLAG_NO_IORDY, 0, NULL },
{"HT6560B", &ht6560b_port_ops, 0x1F,
ATA_FLAG_NO_IORDY, NULL },
ATA_FLAG_NO_IORDY, 0, NULL },
{"OPTI82C611A", &opti82c611a_port_ops, 0x0F,
0 , NULL },
0, 0, NULL },
{"OPTI82C46X", &opti82c46x_port_ops, 0x0F,
0 , NULL },
0, 0, NULL },
{"QDI6500", &qdi6500_port_ops, 0x07,
ATA_FLAG_NO_IORDY, qdi_port },
ATA_FLAG_NO_IORDY,
ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32_CHANGE, qdi_port },
{"QDI6580", &qdi6580_port_ops, 0x1F,
0 , qdi_port },
0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32_CHANGE, qdi_port },
{"QDI6580DP", &qdi6580dp_port_ops, 0x1F,
0 , qdi_port },
0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32_CHANGE, qdi_port },
{"W83759A", &winbond_port_ops, 0x1F,
0 , winbond_port }
0, ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32_CHANGE,
winbond_port }
};
/**
@@ -1008,6 +1014,7 @@ static __init int legacy_init_one(struct legacy_probe *probe)
ap->ops = ops;
ap->pio_mask = pio_modes;
ap->flags |= ATA_FLAG_SLAVE_POSS | iordy;
ap->pflags |= controller->pflags;
ap->ioaddr.cmd_addr = io_addr;
ap->ioaddr.altstatus_addr = ctrl_addr;
ap->ioaddr.ctl_addr = ctrl_addr;