diff options
Diffstat (limited to 'util/x86emu/x86_interrupts.c')
| -rw-r--r-- | util/x86emu/x86_interrupts.c | 75 |
1 files changed, 37 insertions, 38 deletions
diff --git a/util/x86emu/x86_interrupts.c b/util/x86emu/x86_interrupts.c index 73bfe51099..2c63f438e3 100644 --- a/util/x86emu/x86_interrupts.c +++ b/util/x86emu/x86_interrupts.c @@ -34,19 +34,22 @@ #endif enum { - CHECK = 0xb001, - FINDDEV = 0xb102, - READCONFBYTE = 0xb108, - READCONFWORD = 0xb109, - READCONFDWORD = 0xb10a, - WRITECONFBYTE = 0xb10b, - WRITECONFWORD = 0xb10c, - WRITECONFDWORD = 0xb10d + PCIBIOS_CHECK = 0xb101, + PCIBIOS_FINDDEV = 0xb102, + PCIBIOS_READCONFBYTE = 0xb108, + PCIBIOS_READCONFWORD = 0xb109, + PCIBIOS_READCONFDWORD = 0xb10a, + PCIBIOS_WRITECONFBYTE = 0xb10b, + PCIBIOS_WRITECONFWORD = 0xb10c, + PCIBIOS_WRITECONFDWORD = 0xb10d }; // errors go in AH. Just set these up so that word assigns // will work. KISS. enum { + PCIBIOS_SUCCESSFUL = 0x0000, + PCIBIOS_UNSUPPORTED = 0x8100, + PCIBIOS_BADVENDOR = 0x8300, PCIBIOS_NODEV = 0x8600, PCIBIOS_BADREG = 0x8700 }; @@ -63,7 +66,7 @@ int int12_handler(struct eregs *regs) int int1a_handler(struct eregs *regs) { - unsigned short func = (unsigned short) regs->eax; + unsigned short func = (unsigned short)regs->eax; int retval = 0; unsigned short devid, vendorid, devfn; /* Use short to get rid of gabage in upper half of 32-bit register */ @@ -71,14 +74,13 @@ int int1a_handler(struct eregs *regs) unsigned char bus; struct device *dev; - switch(func) { - case CHECK: - regs->edx = 0x4350; - regs->ecx = 0x2049; + switch (func) { + case PCIBIOS_CHECK: + regs->edx = 0x20494350; /* ' ICP' */ + regs->edi = 0x00000000; /* protected mode entry */ retval = 0; break; - case FINDDEV: - { + case PCIBIOS_FINDDEV: devid = regs->ecx; vendorid = regs->edx; devindex = regs->esi; @@ -98,7 +100,7 @@ int int1a_handler(struct eregs *regs) // busnum is an unsigned char; // devfn is an int, so we mask it off. busdevfn = (dev->bus->secondary << 8) - | (dev->path.pci.devfn & 0xff); + | (dev->path.pci.devfn & 0xff); printk(BIOS_DEBUG, "0x%x: return 0x%x\n", func, busdevfn); regs->ebx = busdevfn; retval = 0; @@ -106,15 +108,13 @@ int int1a_handler(struct eregs *regs) regs->eax = PCIBIOS_NODEV; retval = -1; } - } - break; - case READCONFDWORD: - case READCONFWORD: - case READCONFBYTE: - case WRITECONFDWORD: - case WRITECONFWORD: - case WRITECONFBYTE: - { + break; + case PCIBIOS_READCONFDWORD: + case PCIBIOS_READCONFWORD: + case PCIBIOS_READCONFBYTE: + case PCIBIOS_WRITECONFDWORD: + case PCIBIOS_WRITECONFWORD: + case PCIBIOS_WRITECONFBYTE: unsigned long dword; unsigned short word; unsigned char byte; @@ -124,49 +124,48 @@ int int1a_handler(struct eregs *regs) bus = regs->ebx >> 8; reg = regs->edi; dev = dev_find_slot(bus, devfn); - if (! dev) { + if (!dev) { printk(BIOS_DEBUG, "0x%x: BAD DEVICE bus %d devfn 0x%x\n", func, bus, devfn); // idiots. the pcibios guys assumed you'd never pass a bad bus/devfn! regs->eax = PCIBIOS_BADREG; retval = -1; + return retval; } - switch(func) { - case READCONFBYTE: + switch (func) { + case PCIBIOS_READCONFBYTE: byte = pci_read_config8(dev, reg); regs->ecx = byte; break; - case READCONFWORD: + case PCIBIOS_READCONFWORD: word = pci_read_config16(dev, reg); regs->ecx = word; break; - case READCONFDWORD: + case PCIBIOS_READCONFDWORD: dword = pci_read_config32(dev, reg); regs->ecx = dword; break; - case WRITECONFBYTE: + case PCIBIOS_WRITECONFBYTE: byte = regs->ecx; pci_write_config8(dev, reg, byte); break; - case WRITECONFWORD: + case PCIBIOS_WRITECONFWORD: word = regs->ecx; pci_write_config16(dev, reg, word); break; - case WRITECONFDWORD: + case PCIBIOS_WRITECONFDWORD: dword = regs->ecx; pci_write_config32(dev, reg, dword); break; } - if (retval) - retval = PCIBIOS_BADREG; printk(BIOS_DEBUG, "0x%x: bus %d devfn 0x%x reg 0x%x val 0x%x\n", func, bus, devfn, reg, regs->ecx); regs->eax = 0; retval = 0; - } - break; + break; default: - printk(BIOS_ERR, "UNSUPPORTED PCIBIOS FUNCTION 0x%x\n", func); + printk(BIOS_ERR, "UNSUPPORTED PCIBIOS FUNCTION 0x%x\n", func); + retval = -1; break; } |