244 lines
5.8 KiB
C
244 lines
5.8 KiB
C
#include "radeonfb.h"
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#include "pci.h"
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#include "x86emu.h"
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#include "x86pcibios.h"
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extern unsigned short offset_port;
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int x86_pcibios_emulator()
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{
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int ret = 0;
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unsigned long dev;
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switch (X86_AX) {
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case PCI_BIOS_PRESENT:
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#ifdef DEBUG_X86EMU_PCI
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DPRINT("PCI_BIOS_PRESENT\r\n");
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#endif
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X86_AH = 0x00; /* no config space/special cycle support */
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X86_AL = 0x01; /* config mechanism 1 */
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X86_EDX = 'P' | 'C' << 8 | 'I' << 16 | ' ' << 24;
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X86_EBX = 0x0210; /* Version 2.10 */
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X86_ECX = 0xFF00; /* FixME: Max bus number */
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X86_EFLAGS &= ~FB_CF; /* clear carry flag */
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ret = 1;
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break;
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case FIND_PCI_DEVICE:
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/* FixME: support SI != 0 */
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// vendor, device
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#ifdef DEBUG_X86EMU_PCI
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DPRINTVALHEX("FIND_PCI_DEVICE vendor ", X86_DX);
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DPRINTVALHEX(" device ", X86_CX);
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#endif
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dev = pci_find_device((unsigned long) X86_DX, ((unsigned long)X86_CX), 0);
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if (dev != 0) {
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#ifdef DEBUG_X86EMU_PCI
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DPRINT(" ... OK\r\n");
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#endif
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X86_BH = PCI_BUS_FROM_HANDLE(dev);
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//X86_BH = (char)(dev >> 16) / PCI_MAX_FUNCTION); // dev->bus->secondary;
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X86_BL = PCI_DEVICE_FROM_HANDLE(dev) << 3 | PCI_FUNCTION_FROM_HANDLE(dev);
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//X86_BL = (char)dev; // dev->path.u.pci.devfn;
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X86_AH = SUCCESSFUL;
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X86_EFLAGS &= ~FB_CF; /* clear carry flag */
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ret = 1;
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} else {
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#ifdef DEBUG_X86EMU_PCI
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DPRINT(" ... error\r\n");
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#endif
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X86_AH = DEVICE_NOT_FOUND;
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X86_EFLAGS |= FB_CF; /* set carry flag */
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ret = 0;
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}
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break;
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case FIND_PCI_CLASS_CODE:
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/* FixME: support SI != 0 */
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#ifdef DEBUG_X86EMU_PCI
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DPRINTVALHEX("FIND_PCI_CLASS_CODE ", X86_ECX);
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#endif
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dev = pci_find_classcode(X86_ECX, 0);
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if (dev != 0) {
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#ifdef DEBUG_X86EMU_PCI
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DPRINT(" ... OK\r\n");
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#endif
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X86_BH = PCI_BUS_FROM_HANDLE(dev);
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X86_BL = PCI_DEVICE_FROM_HANDLE(dev) << 3 | PCI_FUNCTION_FROM_HANDLE(dev);
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X86_AH = SUCCESSFUL;
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X86_EFLAGS &= ~FB_CF; /* clear carry flag */
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ret = 1;
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} else {
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#ifdef DEBUG_X86EMU_PCI
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DPRINT(" ... error\r\n");
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#endif
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X86_AH = DEVICE_NOT_FOUND;
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X86_EFLAGS |= FB_CF; /* set carry flag */
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ret = 0;
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}
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break;
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case READ_CONFIG_BYTE:
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// bus, devfn
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#ifdef DEBUG_X86EMU_PCI
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DPRINTVAL("READ_CONFIG_BYTE bus ", X86_BH);
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DPRINTVAL(" devfn ", X86_BL);
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DPRINTVALHEX(" reg ", X86_DI);
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#endif
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X86_CL = pci_read_config_byte(dev, X86_DI);
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#ifdef DEBUG_X86EMU_PCI
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DPRINTVALHEX(" value ", X86_CL);
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DPRINT("\r\n");
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#endif
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X86_AH = SUCCESSFUL;
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X86_EFLAGS &= ~FB_CF; /* clear carry flag */
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ret = 1;
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break;
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case READ_CONFIG_WORD:
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// bus, devfn
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#ifdef DEBUG_X86EMU_PCI
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DPRINTVAL("READ_CONFIG_WORD bus ", X86_BH);
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DPRINTVAL(" devfn ", X86_BL);
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DPRINTVALHEX(" reg ", X86_DI);
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#endif
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if(X86_DI == PCIBAR1)
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X86_CX = offset_port + 1;
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else
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X86_CX = pci_read_config_word(dev, X86_DI);
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#ifdef DEBUG_X86EMU_PCI
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DPRINTVALHEX(" value ", X86_CX);
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DPRINT("\r\n");
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#endif
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X86_AH = SUCCESSFUL;
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X86_EFLAGS &= ~FB_CF; /* clear carry flag */
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ret = 1;
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break;
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case READ_CONFIG_DWORD:
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// bus, devfn
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#ifdef DEBUG_X86EMU_PCI
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DPRINTVAL("READ_CONFIG_DWORD bus ", X86_BH);
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DPRINTVAL(" devfn ", X86_BL);
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DPRINTVALHEX(" reg ", X86_DI);
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#endif
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if(X86_DI == PCIBAR1)
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X86_CX = (unsigned long)offset_port+1;
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else
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X86_ECX = pci_read_config_longword(dev, X86_DI);
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#ifdef DEBUG_X86EMU_PCI
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DPRINTVALHEX(" value ", X86_ECX);
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DPRINT("\r\n");
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#endif
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X86_AH = SUCCESSFUL;
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X86_EFLAGS &= ~FB_CF; /* clear carry flag */
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ret = 1;
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break;
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case WRITE_CONFIG_BYTE:
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// bus, devfn
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#ifdef DEBUG_X86EMU_PCI
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DPRINTVAL("READ_CONFIG_BYTE bus ", X86_BH);
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DPRINTVAL(" devfn ", X86_BL);
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DPRINTVALHEX(" reg ", X86_DI);
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DPRINTVALHEX(" value ", X86_CL);
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#endif
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if ((ret = pci_write_config_byte(dev, X86_DI, X86_CL)) == 0)
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{
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#ifdef DEBUG_X86EMU_PCI
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DPRINT(" ... OK\r\n");
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#endif
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X86_AH = SUCCESSFUL;
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X86_EFLAGS &= ~FB_CF; /* clear carry flag */
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ret = 1;
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} else {
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#ifdef DEBUG_X86EMU_PCI
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DPRINTVAL(" ... error ", ret);
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DPRINT("\r\n");
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#endif
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X86_AH = DEVICE_NOT_FOUND;
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X86_EFLAGS |= FB_CF; /* set carry flag */
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ret = 0;
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}
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break;
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case WRITE_CONFIG_WORD:
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// bus, devfn
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#ifdef DEBUG_X86EMU_PCI
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DPRINTVAL("WRITE_CONFIG_WORD bus ", X86_BH);
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DPRINTVAL(" devfn ", X86_BL);
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DPRINTVALHEX(" reg ", X86_DI);
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DPRINTVALHEX(" value ", X86_CX);
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#endif
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if(X86_DI == PCIBAR1) {
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offset_port = X86_CX;
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#ifdef DEBUG_X86EMU_PCI
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DPRINT(" ... OK\r\n");
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#endif
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X86_AH = SUCCESSFUL;
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X86_EFLAGS &= ~FB_CF; /* clear carry flag */
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ret = 1;
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break;
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}
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if ((ret = pci_write_config_word(dev, X86_DI, X86_CX)) == 0)
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{
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#ifdef DEBUG_X86EMU_PCI
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DPRINT(" ... OK\r\n");
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#endif
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X86_AH = SUCCESSFUL;
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X86_EFLAGS &= ~FB_CF; /* clear carry flag */
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ret = 1;
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} else {
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#ifdef DEBUG_X86EMU_PCI
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DPRINTVAL(" ... error ", ret);
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DPRINT("\r\n");
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#endif
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X86_AH = DEVICE_NOT_FOUND;
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X86_EFLAGS |= FB_CF; /* set carry flag */
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ret = 0;
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}
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break;
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case WRITE_CONFIG_DWORD:
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// bus, devfn
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#ifdef DEBUG_X86EMU_PCI
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DPRINTVAL("WRITE_CONFIG_DWORD bus ", X86_BH);
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DPRINTVAL(" devfn ", X86_BL);
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DPRINTVALHEX(" reg ", X86_DI);
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DPRINTVALHEX(" value ", X86_ECX);
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#endif
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if(X86_DI == PCIBAR1) {
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offset_port = (unsigned short)X86_ECX & 0xFFFC;
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#ifdef DEBUG_X86EMU_PCI
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DPRINT(" ... OK\r\n");
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#endif
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X86_AH = SUCCESSFUL;
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X86_EFLAGS &= ~FB_CF; /* clear carry flag */
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ret = 1;
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break;
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}
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if ((ret = pci_write_config_longword(dev, X86_DI, X86_ECX)) == 0)
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{
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#ifdef DEBUG_X86EMU_PCI
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DPRINT(" ... OK\r\n");
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#endif
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X86_AH = SUCCESSFUL;
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X86_EFLAGS &= ~FB_CF; /* clear carry flag */
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ret = 1;
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}
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else
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{
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#ifdef DEBUG_X86EMU_PCI
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DPRINTVAL(" ... error ", ret);
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DPRINT("\r\n");
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#endif
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X86_AH = DEVICE_NOT_FOUND;
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X86_EFLAGS |= FB_CF; /* set carry flag */
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ret = 0;
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}
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break;
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default:
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#ifdef DEBUG_X86EMU_PCI
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DPRINT("PCI_BIOS FUNC_NOT_SUPPORTED\r\n");
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#endif
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X86_AH = FUNC_NOT_SUPPORTED;
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X86_EFLAGS |= FB_CF;
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break;
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}
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return ret;
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}
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