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[MIPS] SMTC: Fix crash on bootup with idebus= command line argument. 

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2007-08-07 17:18:28 +01:00
parent de4b214740
commit b543858209
1 changed files with 25 additions and 51 deletions
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76
include/asm-mips/mach-generic/ide.h
View File

@ -29,68 +29,42 @@
#define IDE_ARCH_OBSOLETE_DEFAULTS
static __inline__ int ide_probe_legacy(void)
{
#ifdef CONFIG_PCI
struct pci_dev *dev;
if ((dev = pci_get_class(PCI_CLASS_BRIDGE_EISA << 8, NULL)) != NULL ||
(dev = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL)) != NULL) {
pci_dev_put(dev);
return 1;
}
return 0;
#elif defined(CONFIG_EISA) || defined(CONFIG_ISA)
return 1;
#else
return 0;
#endif
}
static __inline__ int ide_default_irq(unsigned long base)
{
if (ide_probe_legacy())
switch (base) {
case 0x1f0:
return 14;
case 0x170:
return 15;
case 0x1e8:
return 11;
case 0x168:
return 10;
case 0x1e0:
return 8;
case 0x160:
return 12;
switch (base) {
case 0x1f0: return 14;
case 0x170: return 15;
case 0x1e8: return 11;
case 0x168: return 10;
case 0x1e0: return 8;
case 0x160: return 12;
default:
return 0;
}
else
return 0;
}
}
static __inline__ unsigned long ide_default_io_base(int index)
{
if (ide_probe_legacy())
/*
* If PCI is present then it is not safe to poke around
* the other legacy IDE ports. Only 0x1f0 and 0x170 are
* defined compatibility mode ports for PCI. A user can
* override this using ide= but we must default safe.
*/
if (no_pci_devices()) {
switch (index) {
case 0:
return 0x1f0;
case 1:
return 0x170;
case 2:
return 0x1e8;
case 3:
return 0x168;
case 4:
return 0x1e0;
case 5:
return 0x160;
default:
return 0;
case 2: return 0x1e8;
case 3: return 0x168;
case 4: return 0x1e0;
case 5: return 0x160;
}
else
}
switch (index) {
case 0: return 0x1f0;
case 1: return 0x170;
default:
return 0;
}
}
#define IDE_ARCH_OBSOLETE_INIT