diff options
Diffstat (limited to 'arch/mips/pci/ops-mace.c')
| -rw-r--r-- | arch/mips/pci/ops-mace.c | 36 |
1 files changed, 23 insertions, 13 deletions
diff --git a/arch/mips/pci/ops-mace.c b/arch/mips/pci/ops-mace.c index 8008e31c5e8..6b5821febc3 100644 --- a/arch/mips/pci/ops-mace.c +++ b/arch/mips/pci/ops-mace.c @@ -6,7 +6,6 @@ * Copyright (C) 2000, 2001 Keith M Wesolowski */ #include <linux/kernel.h> -#include <linux/init.h> #include <linux/pci.h> #include <linux/types.h> #include <asm/pci.h> @@ -29,22 +28,24 @@ * 4 N/C */ -#define chkslot(_bus,_devfn) \ -do { \ - if ((_bus)->number > 0 || PCI_SLOT (_devfn) < 1 \ - || PCI_SLOT (_devfn) > 3) \ - return PCIBIOS_DEVICE_NOT_FOUND; \ -} while (0) +static inline int mkaddr(struct pci_bus *bus, unsigned int devfn, + unsigned int reg) +{ + return ((bus->number & 0xff) << 16) | + ((devfn & 0xff) << 8) | + (reg & 0xfc); +} -#define mkaddr(_devfn, _reg) \ -((((_devfn) & 0xffUL) << 8) | ((_reg) & 0xfcUL)) static int mace_pci_read_config(struct pci_bus *bus, unsigned int devfn, int reg, int size, u32 *val) { - chkslot(bus, devfn); - mace->pci.config_addr = mkaddr(devfn, reg); + u32 control = mace->pci.control; + + /* disable master aborts interrupts during config read */ + mace->pci.control = control & ~MACEPCI_CONTROL_MAR_INT; + mace->pci.config_addr = mkaddr(bus, devfn, reg); switch (size) { case 1: *val = mace->pci.config_data.b[(reg & 3) ^ 3]; @@ -56,6 +57,16 @@ mace_pci_read_config(struct pci_bus *bus, unsigned int devfn, *val = mace->pci.config_data.l; break; } + /* ack possible master abort */ + mace->pci.error &= ~MACEPCI_ERROR_MASTER_ABORT; + mace->pci.control = control; + /* + * someone forgot to set the ultra bit for the onboard + * scsi chips; we fake it here + */ + if (bus->number == 0 && reg == 0x40 && size == 4 && + (devfn == (1 << 3) || devfn == (2 << 3))) + *val |= 0x1000; DPRINTK("read%d: reg=%08x,val=%02x\n", size * 8, reg, *val); @@ -66,8 +77,7 @@ static int mace_pci_write_config(struct pci_bus *bus, unsigned int devfn, int reg, int size, u32 val) { - chkslot(bus, devfn); - mace->pci.config_addr = mkaddr(devfn, reg); + mace->pci.config_addr = mkaddr(bus, devfn, reg); switch (size) { case 1: mace->pci.config_data.b[(reg & 3) ^ 3] = val; |