d23c46dd3e
permissions when no access to HW registers is required. For API changes
which mostly involve the modifications to make the RRFunc (introduced
with 6.8) more flexible please check Bugzilla #2407. NOTE: This patch
applies changes to OS specific files for other OSes which I cannot
test.
610 lines
17 KiB
C
610 lines
17 KiB
C
/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/bus/linuxPci.c,v 1.9 2002/09/24 16:14:16 tsi Exp $ */
|
|
/*
|
|
* Copyright 1998 by Concurrent Computer Corporation
|
|
*
|
|
* 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 Concurrent Computer
|
|
* Corporation not be used in advertising or publicity pertaining to
|
|
* distribution of the software without specific, written prior
|
|
* permission. Concurrent Computer Corporation makes no representations
|
|
* about the suitability of this software for any purpose. It is
|
|
* provided "as is" without express or implied warranty.
|
|
*
|
|
* CONCURRENT COMPUTER CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD
|
|
* TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
* AND FITNESS, IN NO EVENT SHALL CONCURRENT COMPUTER CORPORATION 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.
|
|
*
|
|
* Copyright 1998 by Metro Link Incorporated
|
|
*
|
|
* 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 Metro Link
|
|
* Incorporated not be used in advertising or publicity pertaining to
|
|
* distribution of the software without specific, written prior
|
|
* permission. Metro Link Incorporated makes no representations
|
|
* about the suitability of this software for any purpose. It is
|
|
* provided "as is" without express or implied warranty.
|
|
*
|
|
* METRO LINK INCORPORATED DISCLAIMS ALL WARRANTIES WITH REGARD
|
|
* TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
* AND FITNESS, IN NO EVENT SHALL METRO LINK INCORPORATED 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 <stdio.h>
|
|
#include "compiler.h"
|
|
#include "xf86.h"
|
|
#include "xf86Priv.h"
|
|
#include "xf86_OSlib.h"
|
|
#include "Pci.h"
|
|
|
|
/*
|
|
* linux platform specific PCI access functions -- using /proc/bus/pci
|
|
* needs kernel version 2.2.x
|
|
*/
|
|
static CARD32 linuxPciCfgRead(PCITAG tag, int off);
|
|
static void linuxPciCfgWrite(PCITAG, int off, CARD32 val);
|
|
static void linuxPciCfgSetBits(PCITAG tag, int off, CARD32 mask, CARD32 bits);
|
|
|
|
static pciBusFuncs_t linuxFuncs0 = {
|
|
/* pciReadLong */ linuxPciCfgRead,
|
|
/* pciWriteLong */ linuxPciCfgWrite,
|
|
/* pciSetBitsLong */ linuxPciCfgSetBits,
|
|
/* pciAddrHostToBus */ pciAddrNOOP,
|
|
/* pciAddrBusToHost */ pciAddrNOOP
|
|
};
|
|
|
|
static pciBusInfo_t linuxPci0 = {
|
|
/* configMech */ PCI_CFG_MECH_OTHER,
|
|
/* numDevices */ 32,
|
|
/* secondary */ FALSE,
|
|
/* primary_bus */ 0,
|
|
#ifdef PowerMAX_OS
|
|
/* ppc_io_base */ 0,
|
|
/* ppc_io_size */ 0,
|
|
#endif
|
|
/* funcs */ &linuxFuncs0,
|
|
/* pciBusPriv */ NULL,
|
|
/* bridge */ NULL
|
|
};
|
|
|
|
void
|
|
linuxPciInit()
|
|
{
|
|
struct stat st;
|
|
if ((xf86Info.pciFlags == PCIForceNone) ||
|
|
(-1 == stat("/proc/bus/pci", &st))) {
|
|
/* when using this as default for all linux architectures,
|
|
we'll need a fallback for 2.0 kernels here */
|
|
return;
|
|
}
|
|
pciNumBuses = 1;
|
|
pciBusInfo[0] = &linuxPci0;
|
|
pciFindFirstFP = pciGenFindFirst;
|
|
pciFindNextFP = pciGenFindNext;
|
|
}
|
|
|
|
static int
|
|
linuxPciOpenFile(PCITAG tag, Bool write)
|
|
{
|
|
static int lbus,ldev,lfunc,fd = -1,is_write = 0;
|
|
int bus, dev, func;
|
|
char file[32];
|
|
struct stat ignored;
|
|
|
|
bus = PCI_BUS_FROM_TAG(tag);
|
|
dev = PCI_DEV_FROM_TAG(tag);
|
|
func = PCI_FUNC_FROM_TAG(tag);
|
|
if (fd == -1 || (write && (!is_write))
|
|
|| bus != lbus || dev != ldev || func != lfunc) {
|
|
if (fd != -1)
|
|
close(fd);
|
|
if (bus < 256) {
|
|
sprintf(file,"/proc/bus/pci/%02x",bus);
|
|
if (stat(file, &ignored) < 0)
|
|
sprintf(file, "/proc/bus/pci/0000:%02x/%02x.%1x",
|
|
bus, dev, func);
|
|
else
|
|
sprintf(file, "/proc/bus/pci/%02x/%02x.%1x",
|
|
bus, dev, func);
|
|
} else {
|
|
sprintf(file,"/proc/bus/pci/%04x",bus);
|
|
if (stat(file, &ignored) < 0)
|
|
sprintf(file, "/proc/bus/pci/0000:%04x/%02x.%1x",
|
|
bus, dev, func);
|
|
else
|
|
sprintf(file, "/proc/bus/pci/%04x/%02x.%1x",
|
|
bus, dev, func);
|
|
}
|
|
if (write) {
|
|
fd = open(file,O_RDWR);
|
|
if (fd != -1) is_write = TRUE;
|
|
} else switch (is_write) {
|
|
case TRUE:
|
|
fd = open(file,O_RDWR);
|
|
if (fd > -1)
|
|
break;
|
|
default:
|
|
fd = open(file,O_RDONLY);
|
|
is_write = FALSE;
|
|
}
|
|
|
|
lbus = bus;
|
|
ldev = dev;
|
|
lfunc = func;
|
|
}
|
|
return fd;
|
|
}
|
|
|
|
static CARD32
|
|
linuxPciCfgRead(PCITAG tag, int off)
|
|
{
|
|
int fd;
|
|
CARD32 val = 0xffffffff;
|
|
|
|
if (-1 != (fd = linuxPciOpenFile(tag,FALSE))) {
|
|
lseek(fd,off,SEEK_SET);
|
|
read(fd,&val,4);
|
|
}
|
|
return PCI_CPU(val);
|
|
}
|
|
|
|
static void
|
|
linuxPciCfgWrite(PCITAG tag, int off, CARD32 val)
|
|
{
|
|
int fd;
|
|
|
|
if (-1 != (fd = linuxPciOpenFile(tag,TRUE))) {
|
|
lseek(fd,off,SEEK_SET);
|
|
val = PCI_CPU(val);
|
|
write(fd,&val,4);
|
|
}
|
|
}
|
|
|
|
static void
|
|
linuxPciCfgSetBits(PCITAG tag, int off, CARD32 mask, CARD32 bits)
|
|
{
|
|
int fd;
|
|
CARD32 val = 0xffffffff;
|
|
|
|
if (-1 != (fd = linuxPciOpenFile(tag,TRUE))) {
|
|
lseek(fd,off,SEEK_SET);
|
|
read(fd,&val,4);
|
|
val = PCI_CPU(val);
|
|
val = (val & ~mask) | (bits & mask);
|
|
val = PCI_CPU(val);
|
|
lseek(fd,off,SEEK_SET);
|
|
write(fd,&val,4);
|
|
}
|
|
}
|
|
|
|
#ifndef INCLUDE_XF86_NO_DOMAIN
|
|
|
|
/*
|
|
* Compiling the following simply requires the presence of <linux/pci.c>.
|
|
* Actually running this is another matter altogether...
|
|
*
|
|
* This scheme requires that the kernel allow mmap()'ing of a host bridge's I/O
|
|
* and memory spaces through its /proc/bus/pci/BUS/DFN entry. Which one is
|
|
* determined by a prior ioctl().
|
|
*
|
|
* For the sparc64 port, this means 2.4.12 or later. For ppc, this
|
|
* functionality is almost, but not quite there yet. Alpha and other kernel
|
|
* ports to multi-domain architectures still need to implement this.
|
|
*
|
|
* This scheme is also predicated on the use of an IOADDRESS compatible type to
|
|
* designate I/O addresses. Although IOADDRESS is defined as an unsigned
|
|
* integral type, it is actually the virtual address of, i.e. a pointer to, the
|
|
* I/O port to access. And so, the inX/outX macros in "compiler.h" need to be
|
|
* #define'd appropriately (as is done on SPARC's).
|
|
*
|
|
* Another requirement to port this scheme to another multi-domain architecture
|
|
* is to add the appropriate entries in the pciControllerSizes array below.
|
|
*
|
|
* TO DO: Address the deleterious reaction some host bridges have to master
|
|
* aborts. This is already done for secondary PCI buses, but not yet
|
|
* for accesses to primary buses (except for the SPARC port, where
|
|
* master aborts are avoided during PCI scans).
|
|
*/
|
|
|
|
#include <linux/pci.h>
|
|
|
|
#ifndef PCIIOC_BASE /* Ioctls for /proc/bus/pci/X/Y nodes. */
|
|
#define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8)
|
|
|
|
/* Get controller for PCI device. */
|
|
#define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00)
|
|
/* Set mmap state to I/O space. */
|
|
#define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01)
|
|
/* Set mmap state to MEM space. */
|
|
#define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02)
|
|
/* Enable/disable write-combining. */
|
|
#define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03)
|
|
|
|
#endif
|
|
|
|
/* This probably shouldn't be Linux-specific */
|
|
static pciConfigPtr
|
|
xf86GetPciHostConfigFromTag(PCITAG Tag)
|
|
{
|
|
int bus = PCI_BUS_FROM_TAG(Tag);
|
|
pciBusInfo_t *pBusInfo;
|
|
|
|
while ((bus < pciNumBuses) && (pBusInfo = pciBusInfo[bus])) {
|
|
if (bus == pBusInfo->primary_bus)
|
|
return pBusInfo->bridge;
|
|
bus = pBusInfo->primary_bus;
|
|
}
|
|
|
|
return NULL; /* Bad data */
|
|
}
|
|
|
|
/*
|
|
* This is ugly, but until I can extract this information from the kernel,
|
|
* it'll have to do. The default I/O space size is 64K, and 4G for memory.
|
|
* Anything else needs to go in this table. (PowerPC folk take note.)
|
|
*
|
|
* Note that Linux/SPARC userland is 32-bit, so 4G overflows to zero here.
|
|
*
|
|
* Please keep this table in ascending vendor/device order.
|
|
*/
|
|
static struct pciSizes {
|
|
unsigned short vendor, device;
|
|
unsigned long io_size, mem_size;
|
|
} pciControllerSizes[] = {
|
|
{
|
|
PCI_VENDOR_SUN, PCI_CHIP_PSYCHO,
|
|
1U << 16, 1U << 31
|
|
},
|
|
{
|
|
PCI_VENDOR_SUN, PCI_CHIP_SCHIZO,
|
|
1U << 24, 1U << 31 /* ??? */
|
|
},
|
|
{
|
|
PCI_VENDOR_SUN, PCI_CHIP_SABRE,
|
|
1U << 24, (unsigned long)(1ULL << 32)
|
|
},
|
|
{
|
|
PCI_VENDOR_SUN, PCI_CHIP_HUMMINGBIRD,
|
|
1U << 24, (unsigned long)(1ULL << 32)
|
|
}
|
|
};
|
|
#define NUM_SIZES (sizeof(pciControllerSizes) / sizeof(pciControllerSizes[0]))
|
|
|
|
static unsigned long
|
|
linuxGetIOSize(PCITAG Tag)
|
|
{
|
|
pciConfigPtr pPCI;
|
|
int i;
|
|
|
|
/* Find host bridge */
|
|
if ((pPCI = xf86GetPciHostConfigFromTag(Tag))) {
|
|
/* Look up vendor/device */
|
|
for (i = 0; i < NUM_SIZES; i++) {
|
|
if (pPCI->pci_vendor > pciControllerSizes[i].vendor)
|
|
continue;
|
|
if (pPCI->pci_vendor < pciControllerSizes[i].vendor)
|
|
break;
|
|
if (pPCI->pci_device > pciControllerSizes[i].device)
|
|
continue;
|
|
if (pPCI->pci_device < pciControllerSizes[i].device)
|
|
break;
|
|
return pciControllerSizes[i].io_size;
|
|
}
|
|
}
|
|
|
|
return 1U << 16; /* Default to 64K */
|
|
}
|
|
|
|
static void
|
|
linuxGetSizes(PCITAG Tag, unsigned long *io_size, unsigned long *mem_size)
|
|
{
|
|
pciConfigPtr pPCI;
|
|
int i;
|
|
|
|
*io_size = (1U << 16); /* Default to 64K */
|
|
*mem_size = (unsigned long)(1ULL << 32); /* Default to 4G */
|
|
|
|
/* Find host bridge */
|
|
if ((pPCI = xf86GetPciHostConfigFromTag(Tag))) {
|
|
/* Look up vendor/device */
|
|
for (i = 0; i < NUM_SIZES; i++) {
|
|
if (pPCI->pci_vendor > pciControllerSizes[i].vendor)
|
|
continue;
|
|
if (pPCI->pci_vendor < pciControllerSizes[i].vendor)
|
|
break;
|
|
if (pPCI->pci_device > pciControllerSizes[i].device)
|
|
continue;
|
|
if (pPCI->pci_device < pciControllerSizes[i].device)
|
|
break;
|
|
*io_size = pciControllerSizes[i].io_size;
|
|
*mem_size = pciControllerSizes[i].mem_size;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
xf86GetPciDomain(PCITAG Tag)
|
|
{
|
|
pciConfigPtr pPCI;
|
|
int fd, result;
|
|
|
|
pPCI = xf86GetPciHostConfigFromTag(Tag);
|
|
|
|
if (pPCI && (result = PCI_DOM_FROM_BUS(pPCI->busnum)))
|
|
return result;
|
|
|
|
if ((fd = linuxPciOpenFile(pPCI ? pPCI->tag : 0,FALSE)) < 0)
|
|
return 0;
|
|
|
|
if ((result = ioctl(fd, PCIIOC_CONTROLLER, 0)) < 0)
|
|
return 0;
|
|
|
|
return result + 1; /* Domain 0 is reserved */
|
|
}
|
|
|
|
static pointer
|
|
linuxMapPci(int ScreenNum, int Flags, PCITAG Tag,
|
|
ADDRESS Base, unsigned long Size, int mmap_ioctl)
|
|
{
|
|
do {
|
|
pciConfigPtr pPCI;
|
|
unsigned char *result;
|
|
ADDRESS realBase, Offset;
|
|
int fd, mmapflags, prot;
|
|
|
|
xf86InitVidMem();
|
|
|
|
pPCI = xf86GetPciHostConfigFromTag(Tag);
|
|
|
|
if (((fd = linuxPciOpenFile(pPCI ? pPCI->tag : 0,FALSE)) < 0) ||
|
|
(ioctl(fd, mmap_ioctl, 0) < 0))
|
|
break;
|
|
|
|
/* Note: IA-64 doesn't compile this and doesn't need to */
|
|
#ifdef __ia64__
|
|
|
|
# ifndef MAP_WRITECOMBINED
|
|
# define MAP_WRITECOMBINED 0x00010000
|
|
# endif
|
|
# ifndef MAP_NONCACHED
|
|
# define MAP_NONCACHED 0x00020000
|
|
# endif
|
|
|
|
if (Flags & VIDMEM_FRAMEBUFFER)
|
|
mmapflags = MAP_SHARED | MAP_WRITECOMBINED;
|
|
else
|
|
mmapflags = MAP_SHARED | MAP_NONCACHED
|
|
|
|
#else /* !__ia64__ */
|
|
|
|
mmapflags = (Flags & VIDMEM_FRAMEBUFFER) / VIDMEM_FRAMEBUFFER;
|
|
|
|
if (ioctl(fd, PCIIOC_WRITE_COMBINE, mmapflags) < 0)
|
|
break;
|
|
|
|
mmapflags = MAP_SHARED;
|
|
|
|
#endif /* ?__ia64__ */
|
|
|
|
/* Align to page boundary */
|
|
realBase = Base & ~(getpagesize() - 1);
|
|
Offset = Base - realBase;
|
|
|
|
if (Flags & VIDMEM_READONLY)
|
|
prot = PROT_READ;
|
|
else
|
|
prot = PROT_READ | PROT_WRITE;
|
|
|
|
result = mmap(NULL, Size + Offset, prot, mmapflags, fd, realBase);
|
|
|
|
if (!result || ((pointer)result == MAP_FAILED))
|
|
FatalError("linuxMapPci() mmap failure: %s\n", strerror(errno));
|
|
|
|
xf86MakeNewMapping(ScreenNum, Flags, realBase, Size + Offset, result);
|
|
|
|
return result + Offset;
|
|
} while (0);
|
|
|
|
if (mmap_ioctl == PCIIOC_MMAP_IS_MEM)
|
|
return xf86MapVidMem(ScreenNum, Flags, Base, Size);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
pointer
|
|
xf86MapDomainMemory(int ScreenNum, int Flags, PCITAG Tag,
|
|
ADDRESS Base, unsigned long Size)
|
|
{
|
|
return linuxMapPci(ScreenNum, Flags, Tag, Base, Size, PCIIOC_MMAP_IS_MEM);
|
|
}
|
|
|
|
#define MAX_DOMAINS 257
|
|
static pointer DomainMmappedIO[MAX_DOMAINS];
|
|
|
|
/* This has no means of returning failure, so all errors are fatal */
|
|
IOADDRESS
|
|
xf86MapDomainIO(int ScreenNum, int Flags, PCITAG Tag,
|
|
IOADDRESS Base, unsigned long Size)
|
|
{
|
|
int domain = xf86GetPciDomain(Tag);
|
|
|
|
if ((domain <= 0) || (domain >= MAX_DOMAINS))
|
|
FatalError("xf86MapDomainIO(): domain out of range\n");
|
|
|
|
/* Permanently map all of I/O space */
|
|
if (!DomainMmappedIO[domain]) {
|
|
DomainMmappedIO[domain] = linuxMapPci(ScreenNum, Flags, Tag,
|
|
0, linuxGetIOSize(Tag),
|
|
PCIIOC_MMAP_IS_IO);
|
|
if (!DomainMmappedIO[domain])
|
|
FatalError("xf86MapDomainIO(): mmap() failure\n");
|
|
}
|
|
|
|
return (IOADDRESS)DomainMmappedIO[domain] + Base;
|
|
}
|
|
|
|
int
|
|
xf86ReadDomainMemory(PCITAG Tag, ADDRESS Base, int Len, unsigned char *Buf)
|
|
{
|
|
unsigned char *ptr, *src;
|
|
ADDRESS offset;
|
|
unsigned long size;
|
|
int len, pagemask = getpagesize() - 1;
|
|
|
|
/* Ensure page boundaries */
|
|
offset = Base & ~pagemask;
|
|
size = ((Base + Len + pagemask) & ~pagemask) - offset;
|
|
|
|
ptr = xf86MapDomainMemory(-1, VIDMEM_READONLY, Tag, offset, size);
|
|
|
|
if (!ptr)
|
|
return -1;
|
|
|
|
/* Using memcpy() here can hang the system */
|
|
src = ptr + (Base - offset);
|
|
for (len = Len; len-- > 0;)
|
|
*Buf++ = *src++;
|
|
|
|
xf86UnMapVidMem(-1, ptr, size);
|
|
|
|
return Len;
|
|
}
|
|
|
|
resPtr
|
|
xf86BusAccWindowsFromOS(void)
|
|
{
|
|
pciConfigPtr *ppPCI, pPCI;
|
|
resPtr pRes = NULL;
|
|
resRange range;
|
|
unsigned long io_size, mem_size;
|
|
int domain;
|
|
|
|
if ((ppPCI = xf86scanpci(0))) {
|
|
for (; (pPCI = *ppPCI); ppPCI++) {
|
|
if ((pPCI->pci_base_class != PCI_CLASS_BRIDGE) ||
|
|
(pPCI->pci_sub_class != PCI_SUBCLASS_BRIDGE_HOST))
|
|
continue;
|
|
|
|
domain = xf86GetPciDomain(pPCI->tag);
|
|
linuxGetSizes(pPCI->tag, &io_size, &mem_size);
|
|
|
|
RANGE(range, 0, (ADDRESS)(mem_size - 1),
|
|
RANGE_TYPE(ResExcMemBlock, domain));
|
|
pRes = xf86AddResToList(pRes, &range, -1);
|
|
|
|
RANGE(range, 0, (IOADDRESS)(io_size - 1),
|
|
RANGE_TYPE(ResExcIoBlock, domain));
|
|
pRes = xf86AddResToList(pRes, &range, -1);
|
|
|
|
if (domain <= 0)
|
|
break;
|
|
}
|
|
}
|
|
|
|
return pRes;
|
|
}
|
|
|
|
resPtr
|
|
xf86PciBusAccWindowsFromOS(void)
|
|
{
|
|
pciConfigPtr *ppPCI, pPCI;
|
|
resPtr pRes = NULL;
|
|
resRange range;
|
|
unsigned long io_size, mem_size;
|
|
int domain;
|
|
|
|
if ((ppPCI = xf86scanpci(0))) {
|
|
for (; (pPCI = *ppPCI); ppPCI++) {
|
|
if ((pPCI->pci_base_class != PCI_CLASS_BRIDGE) ||
|
|
(pPCI->pci_sub_class != PCI_SUBCLASS_BRIDGE_HOST))
|
|
continue;
|
|
|
|
domain = xf86GetPciDomain(pPCI->tag);
|
|
linuxGetSizes(pPCI->tag, &io_size, &mem_size);
|
|
|
|
RANGE(range, 0, (ADDRESS)(mem_size - 1),
|
|
RANGE_TYPE(ResExcMemBlock, domain));
|
|
pRes = xf86AddResToList(pRes, &range, -1);
|
|
|
|
RANGE(range, 0, (IOADDRESS)(io_size - 1),
|
|
RANGE_TYPE(ResExcIoBlock, domain));
|
|
pRes = xf86AddResToList(pRes, &range, -1);
|
|
|
|
if (domain <= 0)
|
|
break;
|
|
}
|
|
}
|
|
|
|
return pRes;
|
|
}
|
|
|
|
|
|
resPtr
|
|
xf86AccResFromOS(resPtr pRes)
|
|
{
|
|
pciConfigPtr *ppPCI, pPCI;
|
|
resRange range;
|
|
unsigned long io_size, mem_size;
|
|
int domain;
|
|
|
|
if ((ppPCI = xf86scanpci(0))) {
|
|
for (; (pPCI = *ppPCI); ppPCI++) {
|
|
if ((pPCI->pci_base_class != PCI_CLASS_BRIDGE) ||
|
|
(pPCI->pci_sub_class != PCI_SUBCLASS_BRIDGE_HOST))
|
|
continue;
|
|
|
|
domain = xf86GetPciDomain(pPCI->tag);
|
|
linuxGetSizes(pPCI->tag, &io_size, &mem_size);
|
|
|
|
/*
|
|
* At minimum, the top and bottom resources must be claimed, so
|
|
* that resources that are (or appear to be) unallocated can be
|
|
* relocated.
|
|
*/
|
|
RANGE(range, 0x00000000u, 0x0009ffffu,
|
|
RANGE_TYPE(ResExcMemBlock, domain));
|
|
pRes = xf86AddResToList(pRes, &range, -1);
|
|
RANGE(range, 0x000c0000u, 0x000effffu,
|
|
RANGE_TYPE(ResExcMemBlock, domain));
|
|
pRes = xf86AddResToList(pRes, &range, -1);
|
|
RANGE(range, 0x000f0000u, 0x000fffffu,
|
|
RANGE_TYPE(ResExcMemBlock, domain));
|
|
pRes = xf86AddResToList(pRes, &range, -1);
|
|
|
|
RANGE(range, (ADDRESS)(mem_size - 1), (ADDRESS)(mem_size - 1),
|
|
RANGE_TYPE(ResExcMemBlock, domain));
|
|
pRes = xf86AddResToList(pRes, &range, -1);
|
|
|
|
RANGE(range, 0x00000000u, 0x00000000u,
|
|
RANGE_TYPE(ResExcIoBlock, domain));
|
|
pRes = xf86AddResToList(pRes, &range, -1);
|
|
RANGE(range, (IOADDRESS)(io_size - 1), (IOADDRESS)(io_size - 1),
|
|
RANGE_TYPE(ResExcIoBlock, domain));
|
|
pRes = xf86AddResToList(pRes, &range, -1);
|
|
|
|
if (domain <= 0)
|
|
break;
|
|
}
|
|
}
|
|
|
|
return pRes;
|
|
}
|
|
|
|
#endif /* !INCLUDE_XF86_NO_DOMAIN */
|