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[MIPS] Support for several more SNI RM models.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Thomas Bogendoerfer 2006-12-28 18:22:32 +01:00 • committed by Ralf Baechle
parent 5759906ca9
commit c066a32a89
17 changed files with 1875 additions and 396 deletions
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77
arch/mips/pci/ops-sni.c
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@ -83,7 +83,82 @@ static int pcimt_write(struct pci_bus *bus, unsigned int devfn, int reg,
return 0;
}
struct pci_ops sni_pci_ops = {
struct pci_ops sni_pcimt_ops = {
.read = pcimt_read,
.write = pcimt_write,
};
static int pcit_set_config_address(unsigned int busno, unsigned int devfn, int reg)
{
if ((devfn > 255) || (reg > 255) || (busno > 255))
return PCIBIOS_BAD_REGISTER_NUMBER;
outl ((1 << 31) | ((busno & 0xff) << 16) | ((devfn & 0xff) << 8) | (reg & 0xfc), 0xcf8);
return PCIBIOS_SUCCESSFUL;
}
static int pcit_read(struct pci_bus *bus, unsigned int devfn, int reg,
int size, u32 * val)
{
int res;
/*
* on bus 0 we need to check, whether there is a device answering
* for the devfn by doing a config write and checking the result. If
* we don't do it, we will get a data bus error
*/
if (bus->number == 0) {
pcit_set_config_address (0, 0, 0x68);
outl (inl (0xcfc) | 0xc0000000, 0xcfc);
if ((res = pcit_set_config_address(0, devfn, 0)))
return res;
outl (0xffffffff, 0xcfc);
pcit_set_config_address (0, 0, 0x68);
if (inl(0xcfc) & 0x100000)
return PCIBIOS_DEVICE_NOT_FOUND;
}
if ((res = pcit_set_config_address(bus->number, devfn, reg)))
return res;
switch (size) {
case 1:
*val = inb(PCIMT_CONFIG_DATA + (reg & 3));
break;
case 2:
*val = inw(PCIMT_CONFIG_DATA + (reg & 2));
break;
case 4:
*val = inl(PCIMT_CONFIG_DATA);
break;
}
return 0;
}
static int pcit_write(struct pci_bus *bus, unsigned int devfn, int reg,
int size, u32 val)
{
int res;
if ((res = pcit_set_config_address(bus->number, devfn, reg)))
return res;
switch (size) {
case 1:
outb (val, PCIMT_CONFIG_DATA + (reg & 3));
break;
case 2:
outw (val, PCIMT_CONFIG_DATA + (reg & 2));
break;
case 4:
outl (val, PCIMT_CONFIG_DATA);
break;
}
return 0;
}
struct pci_ops sni_pcit_ops = {
.read = pcit_read,
.write = pcit_write,
};