Commit 7accbffd authored by Sergei Shtylyov's avatar Sergei Shtylyov Committed by Bartlomiej Zolnierkiewicz

cmd64x: add/fix enablebits (take 2)

The IDE core looks at the wrong bit when checking if the secondary channel is
enabled on PCI0646 -- CNTRL register bit 7 is read-ahead disable, bit 3 is the
correct one.
Starting with PCI0646U chip, the primary channel can also be enabled/disabled --
so, add 'enablebits' initializers to each 'ide_pci_device_t' structure, handling
the original PCI0646 via adding the init_setup() method and clearing the 'reg'
field there if necessary...
Signed-off-by: default avatarSergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent e51e2528
/* /*
* linux/drivers/ide/pci/cmd64x.c Version 1.44 Mar 12, 2007 * linux/drivers/ide/pci/cmd64x.c Version 1.45 Mar 14, 2007
* *
* cmd64x.c: Enable interrupts at initialization time on Ultra/PCI machines. * cmd64x.c: Enable interrupts at initialization time on Ultra/PCI machines.
* Due to massive hardware bugs, UltraDMA is only supported * Due to massive hardware bugs, UltraDMA is only supported
...@@ -684,42 +684,75 @@ static void __devinit init_hwif_cmd64x(ide_hwif_t *hwif) ...@@ -684,42 +684,75 @@ static void __devinit init_hwif_cmd64x(ide_hwif_t *hwif)
hwif->drives[1].autodma = hwif->autodma; hwif->drives[1].autodma = hwif->autodma;
} }
static int __devinit init_setup_cmd64x(struct pci_dev *dev, ide_pci_device_t *d)
{
return ide_setup_pci_device(dev, d);
}
static int __devinit init_setup_cmd646(struct pci_dev *dev, ide_pci_device_t *d)
{
u8 rev = 0;
/*
* The original PCI0646 didn't have the primary channel enable bit,
* it appeared starting with PCI0646U (i.e. revision ID 3).
*/
pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
if (rev < 3)
d->enablebits[0].reg = 0;
return ide_setup_pci_device(dev, d);
}
static ide_pci_device_t cmd64x_chipsets[] __devinitdata = { static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
{ /* 0 */ { /* 0 */
.name = "CMD643", .name = "CMD643",
.init_setup = init_setup_cmd64x,
.init_chipset = init_chipset_cmd64x, .init_chipset = init_chipset_cmd64x,
.init_hwif = init_hwif_cmd64x, .init_hwif = init_hwif_cmd64x,
.channels = 2, .channels = 2,
.autodma = AUTODMA, .autodma = AUTODMA,
.enablebits = {{0x00,0x00,0x00}, {0x51,0x08,0x08}},
.bootable = ON_BOARD, .bootable = ON_BOARD,
},{ /* 1 */ },{ /* 1 */
.name = "CMD646", .name = "CMD646",
.init_setup = init_setup_cmd646,
.init_chipset = init_chipset_cmd64x, .init_chipset = init_chipset_cmd64x,
.init_hwif = init_hwif_cmd64x, .init_hwif = init_hwif_cmd64x,
.channels = 2, .channels = 2,
.autodma = AUTODMA, .autodma = AUTODMA,
.enablebits = {{0x00,0x00,0x00}, {0x51,0x80,0x80}}, .enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
.bootable = ON_BOARD, .bootable = ON_BOARD,
},{ /* 2 */ },{ /* 2 */
.name = "CMD648", .name = "CMD648",
.init_setup = init_setup_cmd64x,
.init_chipset = init_chipset_cmd64x, .init_chipset = init_chipset_cmd64x,
.init_hwif = init_hwif_cmd64x, .init_hwif = init_hwif_cmd64x,
.channels = 2, .channels = 2,
.autodma = AUTODMA, .autodma = AUTODMA,
.enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
.bootable = ON_BOARD, .bootable = ON_BOARD,
},{ /* 3 */ },{ /* 3 */
.name = "CMD649", .name = "CMD649",
.init_setup = init_setup_cmd64x,
.init_chipset = init_chipset_cmd64x, .init_chipset = init_chipset_cmd64x,
.init_hwif = init_hwif_cmd64x, .init_hwif = init_hwif_cmd64x,
.channels = 2, .channels = 2,
.autodma = AUTODMA, .autodma = AUTODMA,
.enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
.bootable = ON_BOARD, .bootable = ON_BOARD,
} }
}; };
/*
* We may have to modify enablebits for PCI0646, so we'd better pass
* a local copy of the ide_pci_device_t structure down the call chain...
*/
static int __devinit cmd64x_init_one(struct pci_dev *dev, const struct pci_device_id *id) static int __devinit cmd64x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{ {
return ide_setup_pci_device(dev, &cmd64x_chipsets[id->driver_data]); ide_pci_device_t d = cmd64x_chipsets[id->driver_data];
return d.init_setup(dev, &d);
} }
static struct pci_device_id cmd64x_pci_tbl[] = { static struct pci_device_id cmd64x_pci_tbl[] = {
......
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