/*
* Copyright 1999 Egbert Eich
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the authors not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. The authors makes no representations
* about the suitability of this software for any purpose. It is provided
* "as is" without express or implied warranty.
*
* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include "debug.h"
#include <fcntl.h>
#include <unistd.h>
#include <malloc.h>
#include <stdio.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#if defined (__alpha__) || defined (__ia64__)
#include <sys/io.h>
#endif
#include "AsmMacros.h"
#include "pci.h"
/*
* I'm rather simple mindend - therefore I do a poor man's
* pci scan without all the fancy stuff that is done in
* scanpci. However that's all we need.
*/
PciStructPtr PciStruct = NULL;
PciBusPtr PciBuses = NULL;
PciStructPtr CurrentPci = NULL;
PciStructPtr PciList = NULL;
PciStructPtr BootBios = NULL;
int pciMaxBus = 0;
static CARD32 PciCfg1Addr;
static void readConfigSpaceCfg1(CARD32 bus, CARD32 dev, CARD32 func,
CARD32 *reg);
static int checkSlotCfg1(CARD32 bus, CARD32 dev, CARD32 func);
static int checkSlotCfg2(CARD32 bus, int dev);
static void readConfigSpaceCfg2(CARD32 bus, int dev, CARD32 *reg);
static CARD8 interpretConfigSpace(CARD32 *reg, int busidx,
CARD8 dev, CARD8 func);
static CARD32 findBIOSMap(PciStructPtr pciP, CARD32 *biosSize);
static void restoreMem(PciStructPtr pciP);
#ifdef __alpha__
#define PCI_BUS_FROM_TAG(tag) (((tag) & 0x00ff0000) >> 16)
#define PCI_DFN_FROM_TAG(tag) (((tag) & 0x0000ff00) >> 8)
#include <asm/unistd.h>
CARD32
axpPciCfgRead(CARD32 tag)
{
int bus, dfn;
CARD32 val = 0xffffffff;
bus = PCI_BUS_FROM_TAG(tag);
dfn = PCI_DFN_FROM_TAG(tag);
syscall(__NR_pciconfig_read, bus, dfn, tag & 0xff, 4, &val);
return(val);
}
void
axpPciCfgWrite(CARD32 tag, CARD32 val)
{
int bus, dfn;
bus = PCI_BUS_FROM_TAG(tag);
dfn = PCI_DFN_FROM_TAG(tag);
syscall(__NR_pciconfig_write, bus, dfn, tag & 0xff, 4, &val);
}
static CARD32 (*readPci)(CARD32 reg) = axpPciCfgRead;
static void (*writePci)(CARD32 reg, CARD32 val) = axpPciCfgWrite;
#else
static CARD32 readPciCfg1(CARD32 reg);
static void writePciCfg1(CARD32 reg, CARD32 val);
static CARD32 readPciCfg2(CARD32 reg);
static void writePciCfg2(CARD32 reg, CARD32 val);
static CARD32 (*readPci)(CARD32 reg) = readPciCfg1;
static void (*writePci)(CARD32 reg, CARD32 val) = writePciCfg1;
#endif
#if defined(__alpha__) || defined(__sparc__)
#define PCI_EN 0x00000000
#else
#define PCI_EN 0x80000000
#endif
static int numbus;
static int hostbridges = 1;
static unsigned long pciMinMemReg = ~0;
void
scan_pci(void)
{
unsigned short configtype;
CARD32 reg[64];
int busidx;
CARD8 cardnum;
CARD8 func;
int idx;
int i;
PciStructPtr pci1;
PciBusPtr pci_b1,pci_b2;
#if defined(__alpha__) || defined(__powerpc__) || defined(__sparc__) || defined(__ia64__)
configtype = 1;
#else
CARD8 tmp1, tmp2;
CARD32 tmp32_1, tmp32_2;
outb(PCI_MODE2_ENABLE_REG, 0x00);
outb(PCI_MODE2_FORWARD_REG, 0x00);
tmp1 = inb(PCI_MODE2_ENABLE_REG);
tmp2 = inb(PCI_MODE2_FORWARD_REG);
if ((tmp1 == 0x00) && (tmp2 == 0x00)) {
configtype = 2;
readPci = readPciCfg2;
writePci = writePciCfg2;
P_printf("PCI says configuration type 2\n");
} else {
tmp32_1 = inl(PCI_MODE1_ADDRESS_REG);
outl(PCI_MODE1_ADDRESS_REG, PCI_EN);
tmp32_2 = inl(PCI_MODE1_ADDRESS_REG);
outl(PCI_MODE1_ADDRESS_REG, tmp32_1);
if (tmp32_2 == PCI_EN) {
configtype = 1;
P_printf("PCI says configuration type 1\n");
} else {
P_printf("No PCI !\n");
return;
}
}
#endif
if (configtype == 1) {
P_printf("PCI probing configuration type 1\n");
busidx = 0;
numbus = 1;
idx = 0;
do {
P_printf("\nProbing for devices on PCI bus %d:\n", busidx);
for (cardnum = 0; cardnum < MAX_DEV_PER_VENDOR_CFG1; cardnum++) {
func = 0;
do {
/* loop over the different functions, if present */
if (!checkSlotCfg1(busidx,cardnum,func))
break;
readConfigSpaceCfg1(busidx,cardnum,func,reg);
func = interpretConfigSpace(reg,busidx,
cardnum,func);
if (idx++ > MAX_PCI_DEVICES)
continue;
} while (func < 8);
}
} while (++busidx < PCI_MAXBUS);
#if defined(__alpha__) || defined(__powerpc__) || defined(__sparc__) || defined(__ia64__)
/* don't use outl() ;-) */
#else
outl(PCI_MODE1_ADDRESS_REG, 0);
#endif
} else {
int slot;
P_printf("PCI probing configuration type 2\n");
busidx = 0;
numbus = 1;
idx = 0;
do {
for (slot=0xc0; slot<0xd0; i++) {
if (!checkSlotCfg2(busidx,slot))
break;
readConfigSpaceCfg2(busidx,slot,reg);
interpretConfigSpace(reg,busidx,
slot,0);
if (idx++ > MAX_PCI_DEVICES)
continue;
}
} while (++busidx < PCI_MAXBUS);
}
pciMaxBus = numbus - 1;
P_printf("Number of buses in system: %i\n",pciMaxBus + 1);
P_printf("Min PCI mem address: 0x%lx\n",pciMinMemReg);
/* link buses */
pci_b1 = PciBuses;
while (pci_b1) {
pci_b2 = PciBuses;
pci_b1->pBus = NULL;
while (pci_b2) {
if (pci_b1->primary == pci_b2->secondary)
pci_b1->pBus = pci_b2;
pci_b2 = pci_b2->next;
}
pci_b1 = pci_b1->next;
}
pci1 = PciStruct;
while (pci1) {
pci_b2 = PciBuses;
pci1->pBus = NULL;
while (pci_b2) {
if (pci1->bus == pci_b2->secondary)
pci1->pBus = pci_b2;
pci_b2 = pci_b2->next;
}
pci1 = pci1->next;
}
if (RESORT) {
PciStructPtr tmp = PciStruct, tmp1;
PciStruct = NULL;
while (tmp) {
tmp1 = tmp->next;
tmp->next = PciStruct;
PciStruct = tmp;
tmp = tmp1;
}
}
PciList = CurrentPci = PciStruct;
}
#ifndef __alpha__
static CARD32
readPciCfg1(CARD32 reg)
{
CARD32 val;
outl(PCI_MODE1_ADDRESS_REG, reg);
val = inl(PCI_MODE1_DATA_REG);
outl(PCI_MODE1_ADDRESS_REG, 0);
P_printf("reading: 0x%x from 0x%x\n",val,reg);
return val;
}
static void
writePciCfg1(CARD32 reg, CARD32 val)
{
P_printf("writing: 0x%x to 0x%x\n",val,reg);
outl(PCI_MODE1_ADDRESS_REG, reg);
outl(PCI_MODE1_DATA_REG,val);
outl(PCI_MODE1_ADDRESS_REG, 0);
}
static CARD32
readPciCfg2(CARD32 reg)
{
CARD32 val;
CARD8 bus = (reg >> 16) & 0xff;
CARD8 dev = (reg >> 11) & 0x1f;
CARD8 num = reg & 0xff;
outb(PCI_MODE2_ENABLE_REG, 0xF1);
outb(PCI_MODE2_FORWARD_REG, bus);
val = inl((dev << 8) + num);
outb(PCI_MODE2_ENABLE_REG, 0x00);
P_printf("reading: 0x%x from 0x%x\n",val,reg);
return val;
}
static void
writePciCfg2(CARD32 reg, CARD32 val)
{
CARD8 bus = (reg >> 16) & 0xff;
CARD8 dev = (reg >> 11) & 0x1f;
CARD8 num = reg & 0xff;
P_printf("writing: 0x%x to 0x%x\n",val,reg);
outb(PCI_MODE2_ENABLE_REG, 0xF1);
outb(PCI_MODE2_FORWARD_REG, bus);
outl((dev << 8) + num,val);
outb(PCI_MODE2_ENABLE_REG, 0x00);
}
#endif
void
pciVideoDisable(void)
{
/* disable VGA routing on bridges */
PciBusPtr pbp = PciBuses;
PciStructPtr pcp = PciStruct;
while (pbp) {
writePci(pbp->Slot.l | 0x3c, pbp->bctl & ~(CARD32)(8<<16));
pbp = pbp->next;
}
/* disable display devices */
while (pcp) {
writePci(pcp->Slot.l | 0x04, pcp->cmd_st & ~(CARD32)3);
writePci(pcp->Slot.l | 0x30, pcp->RomBase & ~(CARD32)1);
pcp = pcp->next;
}
}
void
pciVideoRestore(void)
{
/* disable VGA routing on bridges */
PciBusPtr pbp = PciBuses;
PciStructPtr pcp = PciStruct;
while (pbp) {
writePci(pbp->Slot.l | 0x3c, pbp->bctl);
pbp = pbp->next;
}
/* disable display devices */
while (pcp) {
writePci(pcp->Slot.l | 0x04, pcp->cmd_st);
writePci(pcp->Slot.l | 0x30, pcp->RomBase);
pcp = pcp->next;
}
}
void
EnableCurrent()
{
PciBusPtr pbp;
PciStructPtr pcp = CurrentPci;
pciVideoDisable();
pbp = pcp->pBus;
while (pbp) { /* enable bridges */
writePci(pbp->Slot.l | 0x3c, pbp->bctl | (CARD32)(8<<16));
pbp = pbp->pBus;
}
writePci(pcp->Slot.l | 0x04, pcp->cmd_st | (CARD32)3);
writePci(pcp->Slot.l | 0x30, pcp->RomBase | (CARD32)1);
}
CARD8
PciRead8(int offset, CARD32 Slot)
{
int shift = offset & 0x3;
offset = offset & 0xFC;
return ((readPci(Slot | offset) >> (shift << 3)) & 0xff);
}
CARD16
PciRead16(int offset, CARD32 Slot)
{
int shift = offset & 0x2;
offset = offset & 0xFC;
return ((readPci(Slot | offset) >> (shift << 3)) & 0xffff);
}
CARD32
PciRead32(int offset, CARD32 Slot)
{
offset = offset & 0xFC;
return (readPci(Slot | offset));
}
void
PciWrite8(int offset, CARD8 byte, CARD32 Slot)
{
CARD32 val;
int shift = offset & 0x3;
offset = offset & 0xFC;
val = readPci(Slot | offset);
val &= ~(CARD32)(0xff << (shift << 3));
val |= byte << (shift << 3);
writePci(Slot | offset, val);
}
void
PciWrite16(int offset, CARD16 word, CARD32 Slot)
{
CARD32 val;
int shift = offset & 0x2;
offset = offset & 0xFC;
val = readPci(Slot | offset);
val &= ~(CARD32)(0xffff << (shift << 3));
val |= word << (shift << 3);
writePci(Slot | offset, val);
}
void
PciWrite32(int offset, CARD32 lg, CARD32 Slot)
{
offset = offset & 0xFC;
writePci(Slot | offset, lg);
}
int
mapPciRom(PciStructPtr pciP)
{
unsigned long RomBase = 0;
int mem_fd;
unsigned char *mem, *ptr;
unsigned char *scratch = NULL;
int length = 0;
CARD32 biosSize = 0x1000000;
CARD32 enablePci;
if (!pciP)
pciP = CurrentPci;
if (FIX_ROM) {
RomBase = findBIOSMap(pciP, &biosSize);
if (!RomBase) {
fprintf(stderr,"Cannot remap BIOS of %i:%i:%i "
"- trying preset address\n",pciP->bus,pciP->dev,
pciP->func);
RomBase = pciP->RomBase & ~(CARD32)0xFF;
}
} else {
RomBase = pciP->RomBase & ~(CARD32)0xFF;
if (~RomBase + 1 < biosSize || !RomBase)
RomBase = findBIOSMap(pciP, &biosSize);
}
P_printf("RomBase: 0x%lx\n",RomBase);
if ((mem_fd = open(MEM_FILE,O_RDONLY))<0) {
perror("opening memory");
restoreMem(pciP);
return (0);
}
PciWrite32(0x30,RomBase | 1,pciP->Slot.l);
#ifdef __alpha__
mem = ptr = (unsigned char *)mmap(0, biosSize, PROT_READ,
MAP_SHARED, mem_fd, RomBase | _bus_base());
#else
mem = ptr = (unsigned char *)mmap(0, biosSize, PROT_READ,
MAP_SHARED, mem_fd, RomBase);
#endif
if (pciP != CurrentPci) {
enablePci = PciRead32(0x4,pciP->Slot.l);
PciWrite32(0x4,enablePci | 0x2,pciP->Slot.l);
}
#ifdef PRINT_PCI
dprint((unsigned long)ptr,0x30);
#endif
while ( *ptr == 0x55 && *(ptr+1) == 0xAA) {
unsigned short data_off = *(ptr+0x18) | (*(ptr+0x19)<< 8);
unsigned char *data = ptr + data_off;
unsigned char type;
int i;
if (*data!='P' || *(data+1)!='C' || *(data+2)!='I' || *(data+3)!='R') {
break;
}
type = *(data + 0x14);
P_printf("data segment in BIOS: 0x%x, type: 0x%x ",data_off,type);
if (type != 0) { /* not PC-AT image: find next one */
unsigned int image_length;
unsigned char indicator = *(data + 0x15);
if (indicator & 0x80) /* last image */
break;
image_length = (*(data + 0x10)
| (*(data + 0x11) << 8)) << 9;
P_printf("data image length: 0x%x, ind: 0x%x\n",
image_length,indicator);
ptr = ptr + image_length;
continue;
}
/* OK, we have a PC Image */
length = (*(ptr + 2) << 9);
P_printf("BIOS length: 0x%x\n",length);
scratch = (unsigned char *)malloc(length);
/* don't use memcpy() here: Reading from bus! */
for (i=0;i<length;i++)
*(scratch + i)=*(ptr + i);
break;
}
if (pciP != CurrentPci)
PciWrite32(0x4,enablePci,pciP->Slot.l);
/* unmap/close/disable PCI bios mem */
munmap(mem, biosSize);
close(mem_fd);
/* disable and restore mapping */
writePci(pciP->Slot.l | 0x30, pciP->RomBase & ~(CARD32)1);
if (scratch && length) {
memcpy((unsigned char *)V_BIOS, scratch, length);
free(scratch);
}
restoreMem(pciP);
return length;
}
CARD32
findPci(CARD16 slotBX)
{
CARD32 slot = slotBX << 8;
if (slot == (CurrentPci->Slot.l & ~PCI_EN))
return (CurrentPci->Slot.l | PCI_EN);
else {
#if !SHOW_ALL_DEV
PciBusPtr pBus = CurrentPci->pBus;
while (pBus) {
/* fprintf(stderr,"slot: 0x%x bridge: 0x%x\n",slot, pBus->Slot.l); */
if (slot == (pBus->Slot.l & ~PCI_EN))
return pBus->Slot.l | PCI_EN;
pBus = pBus->next;
}
#else
PciStructPtr pPci = PciStruct;
while (pPci) {
/*fprintf(stderr,"slot: 0x%x bridge: 0x%x\n",slot, pPci->Slot.l); */
if (slot == (pPci->Slot.l & ~PCI_EN))
return pPci->Slot.l | PCI_EN;
pPci = pPci->next;
}
#endif
}
return 0;
}
CARD16
pciSlotBX(PciStructPtr pPci)
{
return (CARD16)((pPci->Slot.l >> 8) & 0xFFFF);
}
PciStructPtr
findPciDevice(CARD16 vendorID, CARD16 deviceID, char n)
{
PciStructPtr pPci = CurrentPci;
n++;
while (pPci) {
if ((pPci->VendorID == vendorID) && (pPci->DeviceID == deviceID)) {
if (!(--n)) break;
}
pPci = pPci->next;
}
return pPci;
}
PciStructPtr
findPciClass(CARD8 intf, CARD8 subClass, CARD16 class, char n)
{
PciStructPtr pPci = CurrentPci;
n++;
while (pPci) {
if ((pPci->Interface == intf) && (pPci->SubClass == subClass)
&& (pPci->BaseClass == class)) {
if (!(--n)) break;
}
pPci = pPci->next;
}
return pPci;
}
static void
readConfigSpaceCfg1(CARD32 bus, CARD32 dev, CARD32 func, CARD32 *reg)
{
CARD32 config_cmd = PCI_EN | (bus<<16) |
(dev<<11) | (func<<8);
int i;
for (i = 0; i<64;i+=4) {
#ifdef __alpha__
reg[i] = axpPciCfgRead(config_cmd | i);
#else
outl(PCI_MODE1_ADDRESS_REG, config_cmd | i);
reg[i] = inl(PCI_MODE1_DATA_REG);
#endif
#ifdef V86BIOS_DEBUG
P_printf("0x%lx\n",reg[i]);
#endif
}
}
static int
checkSlotCfg1(CARD32 bus, CARD32 dev, CARD32 func)
{
CARD32 config_cmd = PCI_EN | (bus<<16) |
(dev<<11) | (func<<8);
CARD32 reg;
#ifdef __alpha__
reg = axpPciCfgRead(config_cmd);
#else
outl(PCI_MODE1_ADDRESS_REG, config_cmd);
reg = inl(PCI_MODE1_DATA_REG);
#endif
if (reg != 0xFFFFFFFF)
return 1;
else
return 0;
}
static int
checkSlotCfg2(CARD32 bus, int dev)
{
CARD32 val;
outb(PCI_MODE2_ENABLE_REG, 0xF1);
outb(PCI_MODE2_FORWARD_REG, bus);
val = inl(dev << 8);
outb(PCI_MODE2_FORWARD_REG, 0x00);
outb(PCI_MODE2_ENABLE_REG, 0x00);
if (val == 0xFFFFFFFF)
return 0;
if (val == 0xF0F0F0F0)
return 0;
return 1;
}
static void
readConfigSpaceCfg2(CARD32 bus, int dev, CARD32 *reg)
{
int i;
outb(PCI_MODE2_ENABLE_REG, 0xF1);
outb(PCI_MODE2_FORWARD_REG, bus);
for (i = 0; i<64;i+=4) {
reg[i] = inl((dev << 8) + i);
#ifdef V86BIOS_DEBUG
P_printf("0x%lx\n",reg[i]);
#endif
}
outb(PCI_MODE2_ENABLE_REG, 0x00);
}
static CARD8
interpretConfigSpace(CARD32 *reg, int busidx, CARD8 dev, CARD8 func)
{
CARD32 config_cmd;
CARD16 vendor, device;
CARD8 baseclass, subclass;
CARD8 primary, secondary;
CARD8 header, interface;
int i;
config_cmd = PCI_EN | busidx<<16 |
(dev<<11) | (func<<8);
for (i = 0x10; i < 0x28; i+=4) {
if (IS_MEM32(reg[i]))
if ((reg[i] & 0xFFFFFFF0) < pciMinMemReg)
pciMinMemReg = (reg[i] & 0xFFFFFFF0);
#ifdef __alpha__
if (IS_MEM64(reg[i])) {
unsigned long addr = reg[i] |
(unsigned long)(reg[i+4]) << 32;
if ((addr & ~0xfL) < pciMinMemReg)
pciMinMemReg = (addr & ~0xfL);
i+=4;
}
#endif
}
vendor = reg[0] & 0xFFFF;
device = reg[0] >> 16;
P_printf("bus: %i card: %i func %i reg0: 0x%x ", busidx,dev,func,reg[0]);
baseclass = reg[8] >> 24;
subclass = (reg[8] >> 16) & 0xFF;
interface = (reg[8] >> 8) & 0xFF;
header = (reg[0x0c] >> 16) & 0xff;
P_printf("bc 0x%x, sub 0x%x, if 0x%x, hdr 0x%x\n",
baseclass,subclass,interface,header);
if (BRIDGE_CLASS(baseclass)) {
if (BRIDGE_PCI_CLASS(subclass)) {
PciBusPtr pbp = malloc(sizeof(PciBusRec));
P_printf("Pci-Pci Bridge found; ");
primary = reg[0x18] & 0xFF;
secondary = (reg[0x18] >> 8) & 0xFF;
P_printf("primary: 0x%x secondary: 0x%x\n",
primary,secondary);
pbp->bctl = reg[0x3c];
pbp->primary = primary;
pbp->secondary = secondary;
pbp->Slot.l = config_cmd;
pbp->next = PciBuses;
PciBuses = pbp;
numbus++;
} else if (BRIDGE_HOST_CLASS(subclass)
&& (hostbridges++ > 1)) {
numbus++;
}
} else if (VIDEO_CLASS(baseclass,subclass)) {
PciStructPtr pcp = malloc(sizeof(PciStructRec));
P_printf("Display adapter found\n");
pcp->RomBase = reg[0x30];
pcp->cmd_st = reg[4];
pcp->active = (reg[4] & 0x03) == 3 ? 1 : 0;
pcp->VendorID = vendor;
pcp->DeviceID = device;
pcp->Interface = interface;
pcp->BaseClass = baseclass;
pcp->SubClass = subclass;
pcp->Slot.l = config_cmd;
pcp->bus = busidx;
pcp->dev = dev;
pcp->func = func;
pcp->next = PciStruct;
PciStruct = pcp;
}
if ((func == 0)
&& ((header & PCI_MULTIFUNC_DEV) == 0))
func = 8;
else
func++;
return func;
}
static CARD32 remapMEM_val;
static int remapMEM_num;
static int /* map it on some other video device */
remapMem(PciStructPtr pciP, int num, CARD32 size)
{
PciStructPtr pciPtr = PciStruct;
int i;
CARD32 org;
CARD32 val;
CARD32 size_n;
org = PciRead32(num + 0x10,pciP->Slot.l);
while (pciPtr) {
for (i = 0; i < 20; i=i+4) {
val = PciRead32(i + 0x10,pciPtr->Slot.l);
/* don't map it on itself */
if ((org & 0xfffffff0) == (val & 0xfffffff0))
continue;
if (val && !(val & 1))
PciWrite32(i + 0x10,0xffffffff,pciPtr->Slot.l);
else
continue;
size_n = PciRead32(i + 0x10,pciPtr->Slot.l);
PciWrite32(i + 0x10,val,pciPtr->Slot.l);
size_n = ~(CARD32)(size_n & 0xfffffff0) + 1;
if (size_n >= size) {
PciWrite32(num + 0x10,val,pciP->Slot.l);
return 1;
}
}
pciPtr = pciPtr->next;
}
/* last resort: try to go below lowest PCI mem address */
val = ((pciMinMemReg & ~(CARD32)(size - 1)) - size);
if (val > 0x7fffffff) {
PciWrite32(num + 0x10,val, pciP->Slot.l);
return 1;
}
return 0;
}
static void
restoreMem(PciStructPtr pciP)
{
if (remapMEM_val == 0) return;
PciWrite32(remapMEM_num + 0x10,remapMEM_val,pciP->Slot.l);
return;
}
static CARD32
findBIOSMap(PciStructPtr pciP, CARD32 *biosSize)
{
PciStructPtr pciPtr = PciStruct;
int i;
CARD32 val;
CARD32 size;
PciWrite32(0x30,0xffffffff,pciP->Slot.l);
*biosSize = PciRead32(0x30,pciP->Slot.l);
P_printf("bios size: 0x%x\n",*biosSize);
PciWrite32(0x30,pciP->RomBase,pciP->Slot.l);
*biosSize = ~(*biosSize & 0xFFFFFF00) + 1;
P_printf("bios size masked: 0x%x\n",*biosSize);
if (*biosSize > (1024 * 1024 * 16)) {
*biosSize = 1024 * 1024 * 16;
P_printf("fixing broken BIOS size: 0x%x\n",*biosSize);
}
while (pciPtr) {
if (pciPtr->bus != pciP->bus) {
pciPtr = pciPtr->next;
continue;
}
for (i = 0; i < 20; i=i+4) {
val = PciRead32(i + 0x10,pciPtr->Slot.l);
if (!(val & 1))
PciWrite32(i + 0x10,0xffffffff,pciPtr->Slot.l);
else
continue;
size = PciRead32(i + 0x10,pciPtr->Slot.l);
PciWrite32(i + 0x10,val,pciPtr->Slot.l);
size = ~(CARD32)(size & 0xFFFFFFF0) + 1;
#ifdef V86_BIOS_DEBUG
P_printf("size: 0x%x\n",size);
#endif
if (size >= *biosSize) {
if (pciP == pciPtr) { /* if same device remap ram*/
if (!(remapMem(pciP,i,size)))
continue;
remapMEM_val = val;
remapMEM_num = i;
} else {
remapMEM_val = 0;
}
return val & 0xFFFFFF00;
}
}
pciPtr = pciPtr->next;
}
remapMEM_val = 0;
/* very last resort */
if (pciP->bus == 0 && (pciMinMemReg > *biosSize))
return (pciMinMemReg - size) & ~(size - 1);
return 0;
}
int
cfg1out(CARD16 addr, CARD32 val)
{
if (addr == 0xCF8) {
PciCfg1Addr = val;
return 1;
} else if (addr == 0xCFC) {
writePci(PciCfg1Addr, val);
return 1;
}
return 0;
}
int
cfg1in(CARD16 addr, CARD32 *val)
{
if (addr == 0xCF8) {
*val = PciCfg1Addr;
return 1;
} else if (addr == 0xCFC) {
*val = readPci(PciCfg1Addr);
return 1;
}
return 0;
}
void
list_pci(void)
{
PciStructPtr pci = PciList;
while (pci) {
printf("[0x%x:0x%x:0x%x] vendor: 0x%4.4x dev: 0x%4.4x class: 0x%4.4x"
" subclass: 0x%4.4x\n",pci->bus,pci->dev,pci->func,
pci->VendorID,pci->DeviceID,pci->BaseClass,pci->SubClass);
pci = pci->next;
}
}
PciStructPtr
findPciByIDs(int bus, int dev, int func)
{
PciStructPtr pciP = PciList;
while (pciP) {
if (pciP->bus == bus && pciP->dev == dev && pciP->func == func)
return pciP;
pciP = pciP->next;
}
return NULL;
}
