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xserver/hw/xfree86/common/xf86pciBus.c

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/*
* Copyright (c) 1997-2003 by The XFree86 Project, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of the copyright holder(s)
* and author(s) shall not be used in advertising or otherwise to promote
* the sale, use or other dealings in this Software without prior written
* authorization from the copyright holder(s) and author(s).
*/
/*
* This file contains the interfaces to the bus-specific code
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <ctype.h>
#include <stdlib.h>
#include <unistd.h>
#include <X11/X.h>
#include "os.h"
#include "Pci.h"
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86Resources.h"
/* Bus-specific headers */
#include "xf86PciData.h"
#include "xf86Bus.h"
#define XF86_OS_PRIVS
#define NEED_OS_RAC_PROTOS
#include "xf86_OSproc.h"
#include "xf86RAC.h"
/* Bus-specific globals */
Bool pciSlotClaimed = FALSE;
pciConfigPtr *xf86PciInfo = NULL; /* Full PCI probe info */
pciVideoPtr *xf86PciVideoInfo = NULL; /* PCI probe for video hw */
pciAccPtr * xf86PciAccInfo = NULL; /* PCI access related */
/* pcidata globals */
ScanPciSetupProcPtr xf86SetupPciIds = NULL;
ScanPciCloseProcPtr xf86ClosePciIds = NULL;
ScanPciFindByDeviceProcPtr xf86FindPciNamesByDevice = NULL;
ScanPciFindBySubsysProcPtr xf86FindPciNamesBySubsys = NULL;
static resPtr pciAvoidRes = NULL;
/* PCI buses */
static PciBusPtr xf86PciBus = NULL;
/* Bus-specific probe/sorting functions */
/* PCI classes that get included in xf86PciVideoInfo */
#define PCIINFOCLASSES(b,s) \
(((b) == PCI_CLASS_PREHISTORIC) || \
((b) == PCI_CLASS_DISPLAY) || \
((b) == PCI_CLASS_MULTIMEDIA && (s) == PCI_SUBCLASS_MULTIMEDIA_VIDEO) || \
((b) == PCI_CLASS_PROCESSOR && (s) == PCI_SUBCLASS_PROCESSOR_COPROC))
/*
* PCI classes that have messages printed always. The others are only
* have a message printed when the vendor/dev IDs are recognised.
*/
#define PCIALWAYSPRINTCLASSES(b,s) \
(((b) == PCI_CLASS_PREHISTORIC && (s) == PCI_SUBCLASS_PREHISTORIC_VGA) || \
((b) == PCI_CLASS_DISPLAY) || \
((b) == PCI_CLASS_MULTIMEDIA && (s) == PCI_SUBCLASS_MULTIMEDIA_VIDEO))
/*
* PCI classes for which potentially destructive checking of the map sizes
* may be done. Any classes where this may be unsafe should be omitted
* from this list.
*/
#define PCINONSYSTEMCLASSES(b,s) PCIALWAYSPRINTCLASSES(b,s)
/*
* PCI classes that use RAC
*/
#define PCISHAREDIOCLASSES(b,s) \
(((b) == PCI_CLASS_PREHISTORIC && (s) == PCI_SUBCLASS_PREHISTORIC_VGA) || \
((b) == PCI_CLASS_DISPLAY && (s) == PCI_SUBCLASS_DISPLAY_VGA))
#define PCI_MEM32_LENGTH_MAX 0xFFFFFFFF
#define B2M(tag,base) pciBusAddrToHostAddr(tag,PCI_MEM,base)
#define B2I(tag,base) pciBusAddrToHostAddr(tag,PCI_IO,base)
#define B2H(tag,base,type) (((type & ResPhysMask) == ResMem) ? \
B2M(tag, base) : B2I(tag, base))
#define M2B(tag,base) pciHostAddrToBusAddr(tag,PCI_MEM,base)
#define I2B(tag,base) pciHostAddrToBusAddr(tag,PCI_IO,base)
#define H2B(tag,base,type) (((type & ResPhysMask) == ResMem) ? \
M2B(tag, base) : I2B(tag, base))
#define TAG(pvp) (pciTag(pvp->bus,pvp->device,pvp->func))
#define SIZE(size) ((1 << size) - 1)
#define PCI_SIZE(type,tag,size) (((type & ResPhysMask) == ResMem) \
? pciBusAddrToHostAddr(tag,PCI_MEM_SIZE,size) \
: pciBusAddrToHostAddr(tag,PCI_IO_SIZE,size))
#define PCI_M_RANGE(range,tag,begin,end,type) \
{ \
RANGE(range, B2M(tag, begin), B2M(tag, end), \
RANGE_TYPE(type, xf86GetPciDomain(tag))); \
}
#define PCI_I_RANGE(range,tag,begin,end,type) \
{ \
RANGE(range, B2I(tag, begin), B2I(tag, end), \
RANGE_TYPE(type, xf86GetPciDomain(tag))); \
}
#define PCI_X_RANGE(range,tag,begin,end,type) \
{ if ((type & ResPhysMask) == ResMem) PCI_M_RANGE(range,tag,begin,end,type); \
else PCI_I_RANGE(range,tag,begin,end,type); }
#define P_M_RANGE(range,tag,begin,size,type) \
PCI_M_RANGE(range,tag,begin,(begin + SIZE(size)),type)
#define P_I_RANGE(range,tag,begin,size,type) \
PCI_I_RANGE(range,tag,begin,(begin + SIZE(size)),type)
#define P_X_RANGE(range,tag,begin,size,type) \
{ if ((type & ResPhysMask) == ResMem) P_M_RANGE(range,tag,begin,size,type); \
else P_I_RANGE(range,tag,begin,size,type); }
#define PV_M_RANGE(range,pvp,i,type) \
P_M_RANGE(range,TAG(pvp),pvp->memBase[i],pvp->size[i],type)
#define PV_B_RANGE(range,pvp,type) \
P_M_RANGE(range,TAG(pvp),pvp->biosBase,pvp->biosSize,type)
#define PV_I_RANGE(range,pvp,i,type) \
P_I_RANGE(range,TAG(pvp),pvp->ioBase[i],pvp->size[i],type)
static void pciConvertListToHost(int bus, int dev, int func, resPtr list);
static PciBusPtr xf86GetPciBridgeInfo(void);
_X_EXPORT void
xf86FormatPciBusNumber(int busnum, char *buffer)
{
/* 'buffer' should be at least 8 characters long */
if (busnum < 256)
sprintf(buffer, "%d", busnum);
else
sprintf(buffer, "%d@%d", busnum & 0x00ff, busnum >> 8);
}
static Bool
IsBaseUnassigned(CARD32 base)
{
CARD32 mask;
if (base & PCI_MAP_IO)
mask = ~PCI_MAP_IO_ATTR_MASK;
else
mask = ~PCI_MAP_MEMORY_ATTR_MASK;
base &= mask;
return (!base || (base == mask));
}
static Bool
IsBaseUnassigned64(CARD32 base0, CARD32 base1)
{
base0 &= ~PCI_MAP_MEMORY_ATTR_MASK;
base1 &= 0xffffffff;
return ((!base0 && !base1)
|| ((base0 == ~PCI_MAP_MEMORY_ATTR_MASK)
&& (base1 == 0xffffffff)));
}
static void
FindPCIVideoInfo(void)
{
pciConfigPtr pcrp, *pcrpp;
int i = 0, j, k;
int num = 0;
pciVideoPtr info;
int DoIsolateDeviceCheck = 0;
if (xf86IsolateDevice.bus || xf86IsolateDevice.device || xf86IsolateDevice.func)
DoIsolateDeviceCheck = 1;
pcrpp = xf86PciInfo = xf86scanpci(0);
if (pcrpp == NULL) {
xf86PciVideoInfo = NULL;
return;
}
xf86PciBus = xf86GetPciBridgeInfo();
while ((pcrp = pcrpp[i])) {
const int baseclass = pcrp->pci_base_class;
const int subclass = pcrp->pci_sub_class;
if ( PCIINFOCLASSES(baseclass, subclass) &&
(!DoIsolateDeviceCheck ||
(xf86IsolateDevice.bus == pcrp->busnum &&
xf86IsolateDevice.device == pcrp->devnum &&
xf86IsolateDevice.func == pcrp->funcnum)) ) {
num++;
xf86PciVideoInfo = xnfrealloc(xf86PciVideoInfo,
sizeof(pciVideoPtr) * (num + 1));
xf86PciVideoInfo[num] = NULL;
info = xf86PciVideoInfo[num - 1] = xnfalloc(sizeof(pciVideoRec));
info->validSize = FALSE;
info->vendor = pcrp->pci_vendor;
info->chipType = pcrp->pci_device;
info->chipRev = pcrp->pci_rev_id;
info->subsysVendor = pcrp->pci_subsys_vendor;
info->subsysCard = pcrp->pci_subsys_card;
info->bus = pcrp->busnum;
info->device = pcrp->devnum;
info->func = pcrp->funcnum;
info->class = baseclass;
info->subclass = pcrp->pci_sub_class;
info->interface = pcrp->pci_prog_if;
info->biosBase = PCIGETROM(pcrp->pci_baserom);
info->biosSize = pciGetBaseSize(pcrp->tag, 6, TRUE, NULL);
info->thisCard = pcrp;
info->validate = FALSE;
#ifdef INCLUDE_XF86_NO_DOMAIN
if ((PCISHAREDIOCLASSES(baseclass, subclass))
&& (pcrp->pci_command & PCI_CMD_IO_ENABLE) &&
(pcrp->pci_prog_if == 0)) {
/*
* Attempt to ensure that VGA is actually routed to this
* adapter on entry. This needs to be fixed when we finally
* grok host bridges (and multiple bus trees).
*/
j = info->bus;
while (TRUE) {
PciBusPtr pBus = xf86PciBus;
while (pBus && j != pBus->secondary)
pBus = pBus->next;
if (!pBus || !(pBus->brcontrol & PCI_PCI_BRIDGE_VGA_EN))
break;
if (j == pBus->primary) {
if (primaryBus.type == BUS_NONE) {
/* assumption: primary adapter is always VGA */
primaryBus.type = BUS_PCI;
primaryBus.id.pci.bus = pcrp->busnum;
primaryBus.id.pci.device = pcrp->devnum;
primaryBus.id.pci.func = pcrp->funcnum;
} else if (primaryBus.type < BUS_last) {
xf86Msg(X_NOTICE,
"More than one primary device found\n");
primaryBus.type ^= (BusType)(-1);
}
break;
}
j = pBus->primary;
}
}
#endif
for (j = 0; j < 6; j++) {
info->memBase[j] = 0;
info->ioBase[j] = 0;
if (PCINONSYSTEMCLASSES(baseclass, subclass)) {
info->size[j] =
pciGetBaseSize(pcrp->tag, j, TRUE, &info->validSize);
pcrp->minBasesize = info->validSize;
} else {
info->size[j] = pcrp->basesize[j];
info->validSize = pcrp->minBasesize;
}
info->type[j] = 0;
}
if (PCINONSYSTEMCLASSES(baseclass, subclass)) {
/*
* Check of a PCI base is unassigned. If so
* attempt to fix it. Validation will determine
* if the value was correct later on.
*/
CARD32 *base = &pcrp->pci_base0;
for (j = 0; j < 6; j++) {
if (!PCI_MAP_IS64BITMEM(base[j])) {
if (info->size[j] && IsBaseUnassigned(base[j]))
base[j] = pciCheckForBrokenBase(pcrp->tag, j);
} else {
if (j == 5) /* bail out */
break;
if (info->size[j]
&& IsBaseUnassigned64(base[j],base[j+1])) {
base[j] = pciCheckForBrokenBase(pcrp->tag, j);
j++;
base[j] = pciCheckForBrokenBase(pcrp->tag, j);
}
}
}
}
/*
* 64-bit base addresses are checked for and avoided on 32-bit
* platforms.
*/
for (j = 0; j < 6; ++j) {
CARD32 bar = (&pcrp->pci_base0)[j];
if (bar != 0) {
if (bar & PCI_MAP_IO) {
info->ioBase[j] = (memType)PCIGETIO(bar);
info->type[j] = bar & PCI_MAP_IO_ATTR_MASK;
} else {
info->type[j] = bar & PCI_MAP_MEMORY_ATTR_MASK;
info->memBase[j] = (memType)PCIGETMEMORY(bar);
if (PCI_MAP_IS64BITMEM(bar)) {
if (j == 5) {
xf86MsgVerb(X_WARNING, 0,
"****BAR5 specified as 64-bit wide, "
"which is not possible. "
"Ignoring BAR5.****\n");
info->memBase[j] = 0;
} else {
CARD32 bar_hi = PCIGETMEMORY64HIGH((&pcrp->pci_base0)[j]);
#if defined(LONG64) || defined(WORD64)
/* 64 bit architecture */
info->memBase[j] |=
(memType)bar_hi << 32;
#else
if (bar_hi != 0)
info->memBase[j] = 0;
#endif
++j; /* Step over the next BAR */
}
}
}
}
}
}
i++;
}
/* If we haven't found a primary device try a different heuristic */
if (primaryBus.type == BUS_NONE && num) {
for (i = 0; i < num; i++) {
info = xf86PciVideoInfo[i];
pcrp = info->thisCard;
if ((pcrp->pci_command & PCI_CMD_MEM_ENABLE) &&
(num == 1 ||
((info->class == PCI_CLASS_DISPLAY) &&
(info->subclass == PCI_SUBCLASS_DISPLAY_VGA)))) {
if (primaryBus.type == BUS_NONE) {
primaryBus.type = BUS_PCI;
primaryBus.id.pci.bus = pcrp->busnum;
primaryBus.id.pci.device = pcrp->devnum;
primaryBus.id.pci.func = pcrp->funcnum;
} else {
xf86Msg(X_NOTICE,
"More than one possible primary device found\n");
primaryBus.type ^= (BusType)(-1);
}
}
}
}
/* Print a summary of the video devices found */
for (k = 0; k < num; k++) {
const char *vendorname = NULL, *chipname = NULL;
const char *prim = " ";
char busnum[8];
Bool memdone = FALSE, iodone = FALSE;
i = 0;
info = xf86PciVideoInfo[k];
xf86FormatPciBusNumber(info->bus, busnum);
xf86FindPciNamesByDevice(info->vendor, info->chipType,
NOVENDOR, NOSUBSYS,
&vendorname, &chipname, NULL, NULL);
if ((!vendorname || !chipname) &&
!PCIALWAYSPRINTCLASSES(info->class, info->subclass))
continue;
if (xf86IsPrimaryPci(info))
prim = "*";
xf86Msg(X_PROBED, "PCI:%s(%s:%d:%d) ", prim, busnum, info->device,
info->func);
if (vendorname)
xf86ErrorF("%s ", vendorname);
else
xf86ErrorF("unknown vendor (0x%04x) ", info->vendor);
if (chipname)
xf86ErrorF("%s ", chipname);
else
xf86ErrorF("unknown chipset (0x%04x) ", info->chipType);
xf86ErrorF("rev %d", info->chipRev);
for (i = 0; i < 6; i++) {
if (info->memBase[i] &&
(info->memBase[i] < (memType)(-1 << info->size[i]))) {
if (!memdone) {
xf86ErrorF(", Mem @ ");
memdone = TRUE;
} else
xf86ErrorF(", ");
xf86ErrorF("0x%08lx/%d", info->memBase[i], info->size[i]);
}
}
for (i = 0; i < 6; i++) {
if (info->ioBase[i] &&
(info->ioBase[i] < (memType)(-1 << info->size[i]))) {
if (!iodone) {
xf86ErrorF(", I/O @ ");
iodone = TRUE;
} else
xf86ErrorF(", ");
xf86ErrorF("0x%04lx/%d", info->ioBase[i], info->size[i]);
}
}
if (info->biosBase &&
(info->biosBase < (memType)(-1 << info->biosSize)))
xf86ErrorF(", BIOS @ 0x%08lx/%d", info->biosBase, info->biosSize);
xf86ErrorF("\n");
}
}
/*
* fixPciSizeInfo() -- fix pci size info by testing it destructively
* (if not already done), fix pciVideoInfo and entry in the resource
* list.
*/
/*
* Note: once we have OS support to read the sizes GetBaseSize() will
* have to be wrapped by the OS layer. fixPciSizeInfo() should also
* be wrapped by the OS layer to do nothing if the size is always
* returned correctly by GetBaseSize(). It should however set validate
* in pciVideoRec if validation is required. ValidatePci() also needs
* to be wrapped by the OS layer. This may do nothing if the OS has
* already taken care of validation. fixPciResource() may be moved to
* OS layer with minimal changes. Once the wrapping layer is in place
* the common level and drivers should not reference these functions
* directly but thru the OS layer.
*/
static void
fixPciSizeInfo(int entityIndex)
{
pciVideoPtr pvp;
resPtr pAcc;
PCITAG tag;
int j;
if (! (pvp = xf86GetPciInfoForEntity(entityIndex))) return;
if (pvp->validSize) return;
tag = pciTag(pvp->bus,pvp->device,pvp->func);
for (j = 0; j < 6; j++) {
pAcc = Acc;
if (pvp->memBase[j])
while (pAcc) {
if (((pAcc->res_type & (ResPhysMask | ResBlock))
== (ResMem | ResBlock))
&& (pAcc->block_begin == B2M(TAG(pvp),pvp->memBase[j]))
&& (pAcc->block_end == B2M(TAG(pvp),pvp->memBase[j]
+ SIZE(pvp->size[j])))) break;
pAcc = pAcc->next;
}
else if (pvp->ioBase[j])
while (pAcc) {
if (((pAcc->res_type & (ResPhysMask | ResBlock)) ==
(ResIo | ResBlock))
&& (pAcc->block_begin == B2I(TAG(pvp),pvp->ioBase[j]))
&& (pAcc->block_end == B2I(TAG(pvp),pvp->ioBase[j]
+ SIZE(pvp->size[j])))) break;
pAcc = pAcc->next;
}
else continue;
pvp->size[j] = pciGetBaseSize(tag, j, TRUE, &pvp->validSize);
if (pAcc) {
pAcc->block_end = pvp->memBase[j] ?
B2M(TAG(pvp),pvp->memBase[j] + SIZE(pvp->size[j]))
: B2I(TAG(pvp),pvp->ioBase[j] + SIZE(pvp->size[j]));
pAcc->res_type &= ~ResEstimated;
pAcc->res_type |= ResBios;
}
}
if (pvp->biosBase) {
pAcc = Acc;
while (pAcc) {
if (((pAcc->res_type & (ResPhysMask | ResBlock)) ==
(ResMem | ResBlock))
&& (pAcc->block_begin == B2M(TAG(pvp),pvp->biosBase))
&& (pAcc->block_end == B2M(TAG(pvp),pvp->biosBase
+ SIZE(pvp->biosSize)))) break;
pAcc = pAcc->next;
}
pvp->biosSize = pciGetBaseSize(tag, 6, TRUE, &pvp->validSize);
if (pAcc) {
pAcc->block_end = B2M(TAG(pvp),pvp->biosBase+SIZE(pvp->biosSize));
pAcc->res_type &= ~ResEstimated;
pAcc->res_type |= ResBios;
}
}
}
/*
* IO enable/disable related routines for PCI
*/
#define pArg ((pciArg*)arg)
#define SETBITS PCI_CMD_IO_ENABLE
static void
pciIoAccessEnable(void* arg)
{
#ifdef DEBUG
ErrorF("pciIoAccessEnable: 0x%05lx\n", *(PCITAG *)arg);
#endif
pArg->ctrl |= SETBITS | PCI_CMD_MASTER_ENABLE;
pciWriteLong(pArg->tag, PCI_CMD_STAT_REG, pArg->ctrl);
}
static void
pciIoAccessDisable(void* arg)
{
#ifdef DEBUG
ErrorF("pciIoAccessDisable: 0x%05lx\n", *(PCITAG *)arg);
#endif
pArg->ctrl &= ~SETBITS;
pciWriteLong(pArg->tag, PCI_CMD_STAT_REG, pArg->ctrl);
}
#undef SETBITS
#define SETBITS (PCI_CMD_IO_ENABLE | PCI_CMD_MEM_ENABLE)
static void
pciIo_MemAccessEnable(void* arg)
{
#ifdef DEBUG
ErrorF("pciIo_MemAccessEnable: 0x%05lx\n", *(PCITAG *)arg);
#endif
pArg->ctrl |= SETBITS | PCI_CMD_MASTER_ENABLE;
pciWriteLong(pArg->tag, PCI_CMD_STAT_REG, pArg->ctrl);
}
static void
pciIo_MemAccessDisable(void* arg)
{
#ifdef DEBUG
ErrorF("pciIo_MemAccessDisable: 0x%05lx\n", *(PCITAG *)arg);
#endif
pArg->ctrl &= ~SETBITS;
pciWriteLong(pArg->tag, PCI_CMD_STAT_REG, pArg->ctrl);
}
#undef SETBITS
#define SETBITS (PCI_CMD_MEM_ENABLE)
static void
pciMemAccessEnable(void* arg)
{
#ifdef DEBUG
ErrorF("pciMemAccessEnable: 0x%05lx\n", *(PCITAG *)arg);
#endif
pArg->ctrl |= SETBITS | PCI_CMD_MASTER_ENABLE;
pciWriteLong(pArg->tag, PCI_CMD_STAT_REG, pArg->ctrl);
}
static void
pciMemAccessDisable(void* arg)
{
#ifdef DEBUG
ErrorF("pciMemAccessDisable: 0x%05lx\n", *(PCITAG *)arg);
#endif
pArg->ctrl &= ~SETBITS;
pciWriteLong(pArg->tag, PCI_CMD_STAT_REG, pArg->ctrl);
}
#undef SETBITS
#undef pArg
/* move to OS layer */
#define MASKBITS (PCI_PCI_BRIDGE_VGA_EN | PCI_PCI_BRIDGE_MASTER_ABORT_EN)
static void
pciBusAccessEnable(BusAccPtr ptr)
{
PCITAG tag = ptr->busdep.pci.acc;
CARD16 ctrl;
#ifdef DEBUG
ErrorF("pciBusAccessEnable: bus=%d\n", ptr->busdep.pci.bus);
#endif
ctrl = pciReadWord(tag, PCI_PCI_BRIDGE_CONTROL_REG);
if ((ctrl & MASKBITS) != PCI_PCI_BRIDGE_VGA_EN) {
ctrl = (ctrl | PCI_PCI_BRIDGE_VGA_EN) &
~(PCI_PCI_BRIDGE_MASTER_ABORT_EN | PCI_PCI_BRIDGE_SECONDARY_RESET);
pciWriteWord(tag, PCI_PCI_BRIDGE_CONTROL_REG, ctrl);
}
}
/* move to OS layer */
static void
pciBusAccessDisable(BusAccPtr ptr)
{
PCITAG tag = ptr->busdep.pci.acc;
CARD16 ctrl;
#ifdef DEBUG
ErrorF("pciBusAccessDisable: bus=%d\n", ptr->busdep.pci.bus);
#endif
ctrl = pciReadWord(tag, PCI_PCI_BRIDGE_CONTROL_REG);
if (ctrl & MASKBITS) {
ctrl &= ~(MASKBITS | PCI_PCI_BRIDGE_SECONDARY_RESET);
pciWriteWord(tag, PCI_PCI_BRIDGE_CONTROL_REG, ctrl);
}
}
#undef MASKBITS
/* move to OS layer */
static void
pciDrvBusAccessEnable(BusAccPtr ptr)
{
int bus = ptr->busdep.pci.bus;
#ifdef DEBUG
ErrorF("pciDrvBusAccessEnable: bus=%d\n", bus);
#endif
(*pciBusInfo[bus]->funcs->pciControlBridge)(bus,
PCI_PCI_BRIDGE_VGA_EN,
PCI_PCI_BRIDGE_VGA_EN);
}
/* move to OS layer */
static void
pciDrvBusAccessDisable(BusAccPtr ptr)
{
int bus = ptr->busdep.pci.bus;
#ifdef DEBUG
ErrorF("pciDrvBusAccessDisable: bus=%d\n", bus);
#endif
(*pciBusInfo[bus]->funcs->pciControlBridge)(bus,
PCI_PCI_BRIDGE_VGA_EN, 0);
}
static void
pciSetBusAccess(BusAccPtr ptr)
{
#ifdef DEBUG
ErrorF("pciSetBusAccess: route VGA to bus %d\n", ptr->busdep.pci.bus);
#endif
if (!ptr->primary && !ptr->current)
return;
if (ptr->current && ptr->current->disable_f)
(*ptr->current->disable_f)(ptr->current);
ptr->current = NULL;
/* walk down */
while (ptr->primary) { /* No enable for root bus */
if (ptr != ptr->primary->current) {
if (ptr->primary->current && ptr->primary->current->disable_f)
(*ptr->primary->current->disable_f)(ptr->primary->current);
if (ptr->enable_f)
(*ptr->enable_f)(ptr);
ptr->primary->current = ptr;
}
ptr = ptr->primary;
}
}
/* move to OS layer */
static void
savePciState(PCITAG tag, pciSavePtr ptr)
{
int i;
ptr->command = pciReadLong(tag, PCI_CMD_STAT_REG);
for (i=0; i < 6; i++)
ptr->base[i] = pciReadLong(tag, PCI_CMD_BASE_REG + i*4);
ptr->biosBase = pciReadLong(tag, PCI_CMD_BIOS_REG);
}
/* move to OS layer */
static void
restorePciState(PCITAG tag, pciSavePtr ptr)
{
int i;
/* disable card before setting anything */
pciSetBitsLong(tag, PCI_CMD_STAT_REG,
PCI_CMD_MEM_ENABLE | PCI_CMD_IO_ENABLE , 0);
pciWriteLong(tag,PCI_CMD_BIOS_REG, ptr->biosBase);
for (i=0; i<6; i++)
pciWriteLong(tag, PCI_CMD_BASE_REG + i*4, ptr->base[i]);
pciWriteLong(tag, PCI_CMD_STAT_REG, ptr->command);
}
/* move to OS layer */
static void
savePciBusState(BusAccPtr ptr)
{
PCITAG tag = ptr->busdep.pci.acc;
ptr->busdep.pci.save.control =
pciReadWord(tag, PCI_PCI_BRIDGE_CONTROL_REG) &
~PCI_PCI_BRIDGE_SECONDARY_RESET;
/* Allow master aborts to complete normally on non-root buses */
if (ptr->busdep.pci.save.control & PCI_PCI_BRIDGE_MASTER_ABORT_EN)
pciWriteWord(tag, PCI_PCI_BRIDGE_CONTROL_REG,
ptr->busdep.pci.save.control & ~PCI_PCI_BRIDGE_MASTER_ABORT_EN);
}
/* move to OS layer */
#define MASKBITS (PCI_PCI_BRIDGE_VGA_EN | PCI_PCI_BRIDGE_MASTER_ABORT_EN)
static void
restorePciBusState(BusAccPtr ptr)
{
PCITAG tag = ptr->busdep.pci.acc;
CARD16 ctrl;
/* Only restore the bits we've changed (and don't cause resets) */
ctrl = pciReadWord(tag, PCI_PCI_BRIDGE_CONTROL_REG);
if ((ctrl ^ ptr->busdep.pci.save.control) & MASKBITS) {
ctrl &= ~(MASKBITS | PCI_PCI_BRIDGE_SECONDARY_RESET);
ctrl |= ptr->busdep.pci.save.control & MASKBITS;
pciWriteWord(tag, PCI_PCI_BRIDGE_CONTROL_REG, ctrl);
}
}
#undef MASKBITS
/* move to OS layer */
static void
savePciDrvBusState(BusAccPtr ptr)
{
int bus = ptr->busdep.pci.bus;
ptr->busdep.pci.save.control =
(*pciBusInfo[bus]->funcs->pciControlBridge)(bus, 0, 0);
/* Allow master aborts to complete normally on this bus */
(*pciBusInfo[bus]->funcs->pciControlBridge)(bus,
PCI_PCI_BRIDGE_MASTER_ABORT_EN,
0);
}
/* move to OS layer */
static void
restorePciDrvBusState(BusAccPtr ptr)
{
int bus = ptr->busdep.pci.bus;
(*pciBusInfo[bus]->funcs->pciControlBridge)(bus, (CARD16)(-1),
ptr->busdep.pci.save.control);
}
static void
disablePciBios(PCITAG tag)
{
pciSetBitsLong(tag, PCI_CMD_BIOS_REG, PCI_CMD_BIOS_ENABLE, 0);
}
/* ????? */
static void
correctPciSize(memType base, memType oldsize, memType newsize,
unsigned long type)
{
pciConfigPtr pcrp, *pcrpp;
pciVideoPtr pvp, *pvpp;
CARD32 *basep;
int i;
int old_bits = 0, new_bits = 0;
if (oldsize + 1) while (oldsize & 1) {
old_bits ++;
oldsize >>= 1;
}
if (newsize + 1) while (newsize & 1) {
new_bits ++;
newsize >>= 1;
}
for (pcrpp = xf86PciInfo, pcrp = *pcrpp; pcrp; pcrp = *++(pcrpp)) {
/* Only process devices with type 0 headers */
if ((pcrp->pci_header_type & 0x7f) != 0)
continue;
basep = &pcrp->pci_base0;
for (i = 0; i < 6; i++) {
if (basep[i] && (pcrp->basesize[i] == old_bits)) {
if ((((type & ResPhysMask) == ResIo) &&
PCI_MAP_IS_IO(basep[i]) &&
B2I(pcrp->tag,PCIGETIO(basep[i]) == base)) ||
(((type & ResPhysMask) == ResMem) &&
PCI_MAP_IS_MEM(basep[i]) &&
(((!PCI_MAP_IS64BITMEM(basep[i])) &&
(B2M(pcrp->tag,PCIGETMEMORY(basep[i])) == base))
#if defined(LONG64) || defined(WORD64)
||
(B2M(pcrp->tag,PCIGETMEMORY64(basep[i])) == base)
#else
||
(!basep[i+1]
&& (B2M(pcrp->tag,PCIGETMEMORY(basep[i])) == base))
#endif
))) {
pcrp->basesize[i] = new_bits;
break; /* to next device */
}
}
if (PCI_MAP_IS64BITMEM(basep[i])) i++;
}
}
if (xf86PciVideoInfo) {
for (pvpp = xf86PciVideoInfo, pvp = *pvpp; pvp; pvp = *(++pvpp)) {
for (i = 0; i < 6; i++) {
if (pvp->size[i] == old_bits) {
if ((((type & ResPhysMask) == ResIo) && pvp->ioBase[i]
&& (B2I(TAG(pvp),pvp->ioBase[i]) == base)) ||
(((type & ResPhysMask) == ResMem) && pvp->memBase[i]
&& (B2M(TAG(pvp),pvp->memBase[i]) == base))) {
pvp->size[i] = new_bits;
break; /* to next device */
}
}
}
}
}
}
/* ????? */
static void
removeOverlapsWithBridges(int busIndex, resPtr target)
{
PciBusPtr pbp;
resPtr tmp,bridgeRes = NULL;
resRange range;
if (!target)
return;
if (!ResCanOverlap(&target->val))
return;
range = target->val;
for (pbp=xf86PciBus; pbp; pbp = pbp->next) {
if (pbp->primary == busIndex) {
tmp = xf86DupResList(pbp->preferred_io);
bridgeRes = xf86JoinResLists(tmp,bridgeRes);
tmp = xf86DupResList(pbp->preferred_mem);
bridgeRes = xf86JoinResLists(tmp,bridgeRes);
tmp = xf86DupResList(pbp->preferred_pmem);
bridgeRes = xf86JoinResLists(tmp,bridgeRes);
}
}
RemoveOverlaps(target, bridgeRes, TRUE, TRUE);
if (range.rEnd > target->block_end) {
correctPciSize(range.rBegin, range.rEnd - range.rBegin,
target->block_end - target->block_begin,
target->res_type);
xf86MsgVerb(X_INFO, 3,
"PCI %s resource overlap reduced 0x%08lx from 0x%08lx to 0x%08lx\n",
((target->res_type & ResPhysMask) == ResMem) ? "Memory" : "I/O",
range.rBegin, range.rEnd, target->block_end);
}
xf86FreeResList(bridgeRes);
}
/* ????? */
static void
xf86GetPciRes(resPtr *activeRes, resPtr *inactiveRes)
{
pciConfigPtr pcrp, *pcrpp;
pciVideoPtr pvp, *pvpp;
CARD32 *basep;
int i;
resPtr pRes, tmp;
resRange range;
long resMisc;
if (activeRes)
*activeRes = NULL;
if (inactiveRes)
*inactiveRes = NULL;
if (!activeRes || !inactiveRes || !xf86PciInfo)
return;
if (xf86PciVideoInfo)
for (pvpp = xf86PciVideoInfo, pvp = *pvpp; pvp; pvp = *(++pvpp)) {
resPtr *res;
if (PCINONSYSTEMCLASSES(pvp->class, pvp->subclass))
resMisc = ResBios;
else
resMisc = 0;
if (((pciConfigPtr)pvp->thisCard)->pci_command
& (PCI_CMD_IO_ENABLE | PCI_CMD_MEM_ENABLE))
res = activeRes;
else
res = inactiveRes;
if (!pvp->validSize)
resMisc |= ResEstimated;
for (i = 0; i < 6; i++) {
if (pvp->ioBase[i] &&
(pvp->ioBase[i] < (memType)(-1 << pvp->size[i]))) {
PV_I_RANGE(range,pvp,i,ResExcIoBlock | resMisc);
tmp = xf86AddResToList(NULL, &range, -1);
removeOverlapsWithBridges(pvp->bus,tmp);
*res = xf86JoinResLists(tmp,*res);
} else if (pvp->memBase[i] &&
(pvp->memBase[i] < (memType)(-1 << pvp->size[i]))) {
PV_M_RANGE(range, pvp,i, ResExcMemBlock | resMisc);
tmp = xf86AddResToList(NULL, &range, -1);
removeOverlapsWithBridges(pvp->bus,tmp);
*res = xf86JoinResLists(tmp,*res);
}
}
/* FIXME!!!: Don't use BIOS resources for overlap
* checking but reserve them!
*/
if (pvp->biosBase &&
(pvp->biosBase < (memType)(-1 << pvp->biosSize))) {
PV_B_RANGE(range, pvp, ResExcMemBlock | resMisc);
tmp = xf86AddResToList(NULL, &range, -1);
removeOverlapsWithBridges(pvp->bus,tmp);
*res = xf86JoinResLists(tmp,*res);
}
}
for (pcrpp = xf86PciInfo, pcrp = *pcrpp; pcrp; pcrp = *++(pcrpp)) {
resPtr *res;
const CARD8 baseclass = pcrp->pci_base_class;
const CARD8 subclass = pcrp->pci_sub_class;
if (PCIINFOCLASSES(baseclass, subclass))
continue;
/* Only process devices with type 0 headers */
if ((pcrp->pci_header_type & 0x7f) != 0)
continue;
if (!pcrp->minBasesize)
resMisc = ResEstimated;
else
resMisc = 0;
/*
* Allow resources allocated to host bridges to overlap. Perhaps, this
* needs to be specific to AGP-capable chipsets. AGP "memory"
* sometimes gets allocated within the range routed to the AGP bus.
*/
if ((baseclass == PCI_CLASS_BRIDGE) &&
(subclass == PCI_SUBCLASS_BRIDGE_HOST))
resMisc |= ResOverlap;
basep = &pcrp->pci_base0;
for (i = 0; i < 6; i++) {
if (basep[i]) {
if (PCI_MAP_IS_IO(basep[i])) {
if (pcrp->pci_command & PCI_CMD_IO_ENABLE)
res = activeRes;
else
res = inactiveRes;
P_I_RANGE(range, pcrp->tag, PCIGETIO(basep[i]),
pcrp->basesize[i], ResExcIoBlock | resMisc)
} else if (!PCI_MAP_IS64BITMEM(basep[i])) {
if (pcrp->pci_command & PCI_CMD_MEM_ENABLE)
res = activeRes;
else
res = inactiveRes;
P_M_RANGE(range, pcrp->tag, PCIGETMEMORY(basep[i]),
pcrp->basesize[i], ResExcMemBlock | resMisc)
} else {
i++;
#if defined(LONG64) || defined(WORD64)
P_M_RANGE(range,pcrp->tag,PCIGETMEMORY64(basep[i - 1]),
pcrp->basesize[i - 1], ResExcMemBlock | resMisc)
#else
if (basep[i])
continue;
P_M_RANGE(range, pcrp->tag, PCIGETMEMORY(basep[i - 1]),
pcrp->basesize[i - 1], ResExcMemBlock | resMisc)
#endif
if (pcrp->pci_command & PCI_CMD_MEM_ENABLE)
res = activeRes;
else
res = inactiveRes;
}
if (range.rBegin) { /* catch cases where PCI base is unset */
tmp = xf86AddResToList(NULL, &range, -1);
removeOverlapsWithBridges(pcrp->busnum,tmp);
*res = xf86JoinResLists(tmp,*res);
}
}
}
/* Ignore disabled non-video ROMs */
if ((pcrp->pci_command & PCI_CMD_MEM_ENABLE) &&
(pcrp->pci_baserom & PCI_MAP_ROM_DECODE_ENABLE)) {
P_M_RANGE(range,pcrp->tag,PCIGETROM(pcrp->pci_baserom),
pcrp->basesize[6], ResExcMemBlock | resMisc);
if (range.rBegin) {
tmp = xf86AddResToList(NULL, &range, -1);
removeOverlapsWithBridges(pcrp->busnum, tmp);
*activeRes = xf86JoinResLists(tmp, *activeRes);
}
}
}
if (*activeRes) {
xf86MsgVerb(X_INFO, 3, "Active PCI resource ranges:\n");
xf86PrintResList(3, *activeRes);
}
if (*inactiveRes) {
xf86MsgVerb(X_INFO, 3, "Inactive PCI resource ranges:\n");
xf86PrintResList(3, *inactiveRes);
}
/*
* Adjust ranges based on the assumption that there are no real
* overlaps in the PCI base allocations. This assumption should be
* reasonable in most cases. It may be possible to refine the
* approximated PCI base sizes by considering bus mapping information
* from PCI-PCI bridges.
*/
if (*activeRes) {
/* Check for overlaps */
for (pRes = *activeRes; pRes; pRes = pRes->next) {
if (ResCanOverlap(&pRes->val)) {
range = pRes->val;
RemoveOverlaps(pRes, *activeRes, TRUE, TRUE);
RemoveOverlaps(pRes, *inactiveRes, TRUE,
(xf86Info.estimateSizesAggressively > 0));
if (range.rEnd > pRes->block_end) {
correctPciSize(range.rBegin, range.rEnd - range.rBegin,
pRes->block_end - pRes->block_begin,
pRes->res_type);
xf86MsgVerb(X_INFO, 3,
"PCI %s resource overlap reduced 0x%08lx"
" from 0x%08lx to 0x%08lx\n",
((pRes->res_type & ResPhysMask) == ResMem) ?
"Memory" : "I/O",
range.rBegin, range.rEnd, pRes->block_end);
}
}
}
xf86MsgVerb(X_INFO, 3,
"Active PCI resource ranges after removing overlaps:\n");
xf86PrintResList(3, *activeRes);
}
if (*inactiveRes) {
/* Check for overlaps */
for (pRes = *inactiveRes; pRes; pRes = pRes->next) {
if (ResCanOverlap(&pRes->val)) {
range = pRes->val;
RemoveOverlaps(pRes, *activeRes, TRUE,
(xf86Info.estimateSizesAggressively > 1));
RemoveOverlaps(pRes, *inactiveRes, TRUE,
(xf86Info.estimateSizesAggressively > 1));
if (range.rEnd > pRes->block_end) {
correctPciSize(range.rBegin, range.rEnd - range.rBegin,
pRes->block_end - pRes->block_begin,
pRes->res_type);
xf86MsgVerb(X_INFO, 3,
"PCI %s resource overlap reduced 0x%08lx"
" from 0x%08lx to 0x%08lx\n",
((pRes->res_type & ResPhysMask) == ResMem) ?
"Memory" : "I/O",
range.rBegin, range.rEnd, pRes->block_end);
}
}
}
xf86MsgVerb(X_INFO, 3,
"Inactive PCI resource ranges after removing overlaps:\n");
xf86PrintResList(3, *inactiveRes);
}
}
resPtr
ResourceBrokerInitPci(resPtr *osRes)
{
resPtr activeRes, inactiveRes;
resPtr tmp;
/* Get bus-specific system resources (PCI) */
xf86GetPciRes(&activeRes, &inactiveRes);
/*
* Adjust OS-reported resource ranges based on the assumption that there
* are no overlaps with the PCI base allocations. This should be a good
* assumption because writes to PCI address space won't be routed directly
* to host memory.
*/
for (tmp = *osRes; tmp; tmp = tmp->next)
RemoveOverlaps(tmp, activeRes, FALSE, TRUE);
xf86MsgVerb(X_INFO, 3, "OS-reported resource ranges after removing"
" overlaps with PCI:\n");
xf86PrintResList(3, *osRes);
pciAvoidRes = xf86AddRangesToList(pciAvoidRes,PciAvoid,-1);
for (tmp = pciAvoidRes; tmp; tmp = tmp->next)
RemoveOverlaps(tmp, activeRes, FALSE, TRUE);
tmp = xf86DupResList(*osRes);
pciAvoidRes = xf86JoinResLists(pciAvoidRes,tmp);
return (xf86JoinResLists(activeRes,inactiveRes));
}
/*
* PCI Resource modification
*/
static Bool
fixPciResource(int prt, memType alignment, pciVideoPtr pvp, unsigned long type)
{
int res_n;
memType *p_base;
int *p_size;
unsigned char p_type;
resPtr AccTmp = NULL;
resPtr orgAcc = NULL;
resPtr *pAcc = &AccTmp;
resPtr avoid = NULL;
resRange range;
resPtr resSize = NULL;
resPtr w_tmp, w = NULL, w_2nd = NULL;
PCITAG tag;
PciBusPtr pbp = xf86PciBus;
pciConfigPtr pcp;
resPtr tmp;
if (!pvp) return FALSE;
tag = pciTag(pvp->bus,pvp->device,pvp->func);
pcp = pvp->thisCard;
type &= ResAccMask;
if (!type) type = ResShared;
if (prt < 6) {
if (pvp->memBase[prt]) {
type |= ResMem;
res_n = prt;
p_base = &(pvp->memBase[res_n]);
p_size = &(pvp->size[res_n]);
p_type = pvp->type[res_n];
if (!PCI_MAP_IS64BITMEM(pvp->type[res_n])) {
PCI_M_RANGE(range,tag,0,0xffffffff,ResExcMemBlock);
resSize = xf86AddResToList(resSize,&range,-1);
}
} else if (pvp->ioBase[prt]){
type |= ResIo;
res_n = prt;
p_base = &(pvp->ioBase[res_n]);
p_size = &(pvp->size[res_n]);
p_type = pvp->type[res_n];
PCI_I_RANGE(range, tag, 0, 0xffffffff, ResExcIoBlock);
resSize = xf86AddResToList(resSize, &range, -1);
} else return FALSE;
} else if (prt == 6) {
type |= ResMem;
res_n = 0xff; /* special flag for bios rom */
p_base = &(pvp->biosBase);
p_size = &(pvp->biosSize);
/* XXX This should also include the PCI_MAP_MEMORY_TYPE_MASK part */
p_type = 0;
PCI_M_RANGE(range,tag,0,0xffffffff,ResExcMemBlock);
resSize = xf86AddResToList(resSize,&range,-1);
} else return FALSE;
if (! *p_base) return FALSE;
type |= (range.type & ResDomain) | ResBlock;
/* setup avoid: PciAvoid is bus range: convert later */
avoid = xf86DupResList(pciAvoidRes);
while (pbp) {
if (pbp->secondary == pvp->bus) {
if ((type & ResPhysMask) == ResMem) {
if (((p_type & PCI_MAP_MEMORY_CACHABLE)
#if 0 /*EE*/
|| (res_n == 0xff)/* bios should also be prefetchable */
#endif
)) {
if (pbp->preferred_pmem)
w = xf86FindIntersectOfLists(pbp->preferred_pmem,
ResRange);
else if (pbp->pmem)
w = xf86FindIntersectOfLists(pbp->pmem,ResRange);
if (pbp->preferred_mem)
w_2nd = xf86FindIntersectOfLists(pbp->preferred_mem,
ResRange);
else if (pbp->mem)
w_2nd = xf86FindIntersectOfLists(pbp->mem,
ResRange);
} else {
if (pbp->preferred_mem)
w = xf86FindIntersectOfLists(pbp->preferred_mem,
ResRange);
else if (pbp->mem)
w = xf86FindIntersectOfLists(pbp->mem,ResRange);
}
} else {
if (pbp->preferred_io)
w = xf86FindIntersectOfLists(pbp->preferred_io,ResRange);
if (pbp->io)
w = xf86FindIntersectOfLists(pbp->io,ResRange);
}
} else if (pbp->primary == pvp->bus) {
if ((type & ResPhysMask) == ResMem) {
tmp = xf86DupResList(pbp->preferred_pmem);
avoid = xf86JoinResLists(avoid, tmp);
tmp = xf86DupResList(pbp->preferred_mem);
avoid = xf86JoinResLists(avoid, tmp);
} else {
tmp = xf86DupResList(pbp->preferred_io);
avoid = xf86JoinResLists(avoid, tmp);
}
}
pbp = pbp->next;
}
/* convert bus based entries in avoid list to host base */
pciConvertListToHost(pvp->bus,pvp->device,pvp->func, avoid);
if (!w)
w = xf86DupResList(ResRange);
xf86MsgVerb(X_INFO, 3, "window:\n");
xf86PrintResList(3, w);
xf86MsgVerb(X_INFO, 3, "resSize:\n");
xf86PrintResList(3, resSize);
if (resSize) {
w_tmp = w;
w = xf86FindIntersectOfLists(w,resSize);
xf86FreeResList(w_tmp);
if (w_2nd) {
w_tmp = w_2nd;
w_2nd = xf86FindIntersectOfLists(w_2nd,resSize);
xf86FreeResList(w_tmp);
}
xf86FreeResList(resSize);
}
xf86MsgVerb(X_INFO, 3, "window fixed:\n");
xf86PrintResList(3, w);
if (!alignment)
alignment = (1 << (*p_size)) - 1;
/* Access list holds bios resources -- remove this one */
#ifdef NOTYET
AccTmp = xf86DupResList(Acc);
while ((*pAcc)) {
if ((((*pAcc)->res_type & (type & ~ResAccMask))
== (type & ~ResAccMask))
&& ((*pAcc)->block_begin == (B2H(tag,(*p_base),type)))
&& ((*pAcc)->block_end == (B2H(tag,
(*p_base)+SIZE(*p_size),type)))) {
resPtr acc_tmp = (*pAcc)->next;
xfree((*pAcc));
(*pAcc) = acc_tmp;
break;
} else
pAcc = &((*pAcc)->next);
}
/* check if we really need to fix anything */
P_X_RANGE(range,tag,(*p_base),(*p_base) + SIZE((*p_size)),type);
if (!ChkConflict(&range,avoid,SETUP)
&& !ChkConflict(&range,AccTmp,SETUP)
&& ((B2H(tag,(*p_base),type) & PCI_SIZE(type,tag,alignment)
== range->block_begin)
&& ((xf86IsSubsetOf(range,w)
|| (w_2nd && xf86IsSubsetOf(range,w_2n))))) {
#ifdef DEBUG
ErrorF("nothing to fix\n");
#endif
xf86FreeResList(AccTmp);
xf86FreeResList(w);
xf86FreeResList(w_2nd);
xf86FreeResList(avoid);
return TRUE;
}
#ifdef DEBUG
ErrorF("removing old resource\n");
#endif
orgAcc = Acc;
Acc = AccTmp;
#else
orgAcc = xf86DupResList(Acc);
pAcc = &Acc;
while (*pAcc) {
if ((((*pAcc)->res_type & (ResTypeMask|ResExtMask)) ==
(type & ~ResAccMask))
&& ((*pAcc)->block_begin == B2H(tag,(*p_base),type))
&& ((*pAcc)->block_end == B2H(tag,(*p_base) + SIZE(*p_size),
type))) {
#ifdef DEBUG
ErrorF("removing old resource\n");
#endif
tmp = *pAcc;
*pAcc = (*pAcc)->next;
tmp->next = NULL;
xf86FreeResList(tmp);
break;
} else
pAcc = &((*pAcc)->next);
}
#endif
#ifdef DEBUG
ErrorF("base: 0x%lx alignment: 0x%lx host alignment: 0x%lx size[bit]: 0x%x\n",
(*p_base),alignment,PCI_SIZE(type,tag,alignment),(*p_size));
xf86MsgVerb(X_INFO, 3, "window:\n");
xf86PrintResList(3, w);
if (w_2nd)
xf86MsgVerb(X_INFO, 3, "2nd window:\n");
xf86PrintResList(3, w_2nd);
xf86ErrorFVerb(3,"avoid:\n");
xf86PrintResList(3,avoid);
#endif
w_tmp = w;
while (w) {
if ((type & ResTypeMask) == (w->res_type & ResTypeMask)) {
#ifdef DEBUG
ErrorF("block_begin: 0x%lx block_end: 0x%lx\n",w->block_begin,
w->block_end);
#endif
range = xf86GetBlock(type,PCI_SIZE(type,tag,alignment + 1),
w->block_begin, w->block_end,
PCI_SIZE(type,tag,alignment),avoid);
if (range.type != ResEnd)
break;
}
w = w->next;
}
xf86FreeResList(w_tmp);
/* if unsuccessful and memory prefetchable try non-prefetchable */
if (range.type == ResEnd && w_2nd) {
w_tmp = w_2nd;
while (w_2nd) {
if ((type & ResTypeMask) == (w_2nd->res_type & ResTypeMask)) {
#ifdef DEBUG
ErrorF("block_begin: 0x%lx block_end: 0x%lx\n",w_2nd->block_begin,
w_2nd->block_end);
#endif
range = xf86GetBlock(type,PCI_SIZE(type,tag,alignment + 1),
w_2nd->block_begin, w_2nd->block_end,
PCI_SIZE(type,tag,alignment),avoid);
if (range.type != ResEnd)
break;
}
w_2nd = w_2nd->next;
}
xf86FreeResList(w_tmp);
}
xf86FreeResList(avoid);
if (range.type == ResEnd) {
xf86MsgVerb(X_ERROR,3,"Cannot find a replacement memory range\n");
xf86FreeResList(Acc);
Acc = orgAcc;
return FALSE;
}
xf86FreeResList(orgAcc);
#ifdef DEBUG
ErrorF("begin: 0x%lx, end: 0x%lx\n",range.a,range.b);
#endif
(*p_size) = 0;
while (alignment >> (*p_size))
(*p_size)++;
(*p_base) = H2B(tag,range.rBegin,type);
#ifdef DEBUG
ErrorF("New PCI res %i base: 0x%lx, size: 0x%lx, type %s\n",
res_n,(*p_base),(1L << (*p_size)),
((type & ResPhysMask) == ResMem) ? "Mem" : "Io");
#endif
if (res_n != 0xff) {
if ((type & ResPhysMask) == ResMem)
pvp->memBase[prt] = range.rBegin;
else
pvp->ioBase[prt] = range.rBegin;
((CARD32 *)(&(pcp->pci_base0)))[res_n] =
(CARD32)(*p_base) | (CARD32)(p_type);
pciWriteLong(tag, PCI_CMD_BASE_REG + res_n * sizeof(CARD32),
((CARD32 *)(&(pcp->pci_base0)))[res_n]);
if (PCI_MAP_IS64BITMEM(p_type)) {
#if defined(LONG64) || defined(WORD64)
((CARD32 *)(&(pcp->pci_base0)))[res_n + 1] =
(CARD32)(*p_base >> 32);
pciWriteLong(tag, PCI_CMD_BASE_REG + (res_n + 1) * sizeof(CARD32),
((CARD32 *)(&(pcp->pci_base0)))[res_n + 1]);
#else
((CARD32 *)(&(pcp->pci_base0)))[res_n + 1] = 0;
pciWriteLong(tag, PCI_CMD_BASE_REG + (res_n + 1) * sizeof(CARD32),
0);
#endif
}
} else {
pvp->biosBase = range.rBegin;
pcp->pci_baserom = (pciReadLong(tag,PCI_CMD_BIOS_REG) & 0x01) |
(CARD32)(*p_base);
pciWriteLong(tag, PCI_CMD_BIOS_REG, pcp->pci_baserom);
}
/* @@@ fake BIOS allocated resource */
range.type |= ResBios;
Acc = xf86AddResToList(Acc, &range,-1);
return TRUE;
}
_X_EXPORT Bool
xf86FixPciResource(int entityIndex, int prt, memType alignment,
unsigned long type)
{
pciVideoPtr pvp = xf86GetPciInfoForEntity(entityIndex);
return fixPciResource(prt, alignment, pvp, type);
}
_X_EXPORT resPtr
xf86ReallocatePciResources(int entityIndex, resPtr pRes)
{
pciVideoPtr pvp = xf86GetPciInfoForEntity(entityIndex);
resPtr pBad = NULL,pResTmp;
unsigned int prt = 0;
int i;
if (!pvp) return pRes;
while (pRes) {
switch (pRes->res_type & ResPhysMask) {
case ResMem:
if (pRes->block_begin == B2M(TAG(pvp),pvp->biosBase) &&
pRes->block_end == B2M(TAG(pvp),pvp->biosBase
+ SIZE(pvp->biosSize)))
prt = 6;
else for (i = 0 ; i < 6; i++)
if ((pRes->block_begin == B2M(TAG(pvp),pvp->memBase[i]))
&& (pRes->block_end == B2M(TAG(pvp),pvp->memBase[i]
+ SIZE(pvp->size[i])))) {
prt = i;
break;
}
break;
case ResIo:
for (i = 0 ; i < 6; i++)
if (pRes->block_begin == B2I(TAG(pvp),pvp->ioBase[i])
&& pRes->block_end == B2I(TAG(pvp),pvp->ioBase[i]
+ SIZE(pvp->size[i]))) {
prt = i;
break;
}
break;
}
if (!prt) return pRes;
pResTmp = pRes->next;
if (! fixPciResource(prt, 0, pvp, pRes->res_type)) {
pRes->next = pBad;
pBad = pRes;
} else
xfree(pRes);
pRes = pResTmp;
}
return pBad;
}
/*
* BIOS releated
*/
static resPtr
getOwnResources(pciVideoPtr pvp, resPtr mem)
{
resRange range;
int i;
/* Make sure we don't conflict with our own mem resources */
for (i = 0; i < 6; i++) {
if (!pvp->memBase[i])
continue;
P_M_RANGE(range,TAG(pvp),pvp->memBase[i],pvp->size[i],
ResExcMemBlock);
mem = xf86AddResToList(mem,&range,-1);
}
return mem;
}
static void
getPciRangesForMapping(pciVideoPtr pvp, resPtr *map, resPtr *avoid)
{
PciBusPtr pbp;
resPtr tmp;
*avoid = xf86DupResList(pciAvoidRes);
pbp = xf86PciBus;
while (pbp) {
if (pbp->secondary == pvp->bus) {
if (pbp->preferred_pmem)
tmp = xf86DupResList(pbp->preferred_pmem);
else
tmp = xf86DupResList(pbp->pmem);
*map = xf86JoinResLists(*map,tmp);
if (pbp->preferred_mem)
tmp = xf86DupResList(pbp->preferred_mem);
else
tmp = xf86DupResList(pbp->mem);
*map = xf86JoinResLists(*map,tmp);
tmp = *map;
while (tmp) {
tmp->block_end = min(tmp->block_end,PCI_MEM32_LENGTH_MAX);
tmp = tmp->next;
}
} else if ((pbp->primary == pvp->bus) &&
(pbp->secondary >= 0) &&
(pbp->primary != pbp->secondary)) {
tmp = xf86DupResList(pbp->preferred_pmem);
*avoid = xf86JoinResLists(*avoid, tmp);
tmp = xf86DupResList(pbp->pmem);
*avoid = xf86JoinResLists(*avoid, tmp);
tmp = xf86DupResList(pbp->preferred_mem);
*avoid = xf86JoinResLists(*avoid, tmp);
tmp = xf86DupResList(pbp->mem);
*avoid = xf86JoinResLists(*avoid, tmp);
}
pbp = pbp->next;
}
pciConvertListToHost(pvp->bus,pvp->device,pvp->func, *avoid);
pciConvertListToHost(pvp->bus,pvp->device,pvp->func, *map);
}
static memType
findPciRange(PCITAG tag, resPtr m, resPtr avoid, CARD32 size)
{
resRange range;
CARD32 alignment = (1 << size) - 1;
while (m) {
range = xf86GetBlock(RANGE_TYPE(ResExcMemBlock, xf86GetPciDomain(tag)),
PCI_SIZE(ResMem, tag, 1 << size),
m->block_begin, m->block_end,
PCI_SIZE(ResMem, tag, alignment),
avoid);
if (range.type != ResEnd) {
return M2B(tag, range.rBase);
}
m = m->next;
}
return 0;
}
static pciVideoPtr
getPciVideoPtr(PCITAG tag)
{
int n = 0;
pciVideoPtr pvp = NULL;
if (!xf86PciVideoInfo) return 0;
while ((pvp = xf86PciVideoInfo[n++])) {
if (pciTag(pvp->bus,pvp->device,pvp->func) == tag)
return pvp;
}
return NULL;
}
memType
getValidBIOSBase(PCITAG tag, int num)
{
pciVideoPtr pvp = NULL;
memType ret;
CARD32 biosSize;
resPtr mem = NULL;
resPtr avoid = NULL, m = NULL;
resRange range;
pvp = getPciVideoPtr(tag);
if (!pvp) return 0;
biosSize = pvp->biosSize;
if (biosSize > 24)
biosSize = 24;
switch ((romBaseSource)num) {
case ROM_BASE_PRESET:
return 0; /* This should not happen */
case ROM_BASE_BIOS:
/* In some cases the BIOS base register contains the size mask */
if ((memType)(-1 << biosSize) == PCIGETROM(pvp->biosBase))
return 0;
mem = getOwnResources(pvp,mem);
P_M_RANGE(range, tag, pvp->biosBase,biosSize,ResExcMemBlock);
ret = pvp->biosBase;
break;
case ROM_BASE_MEM0:
case ROM_BASE_MEM1:
case ROM_BASE_MEM2:
case ROM_BASE_MEM3:
case ROM_BASE_MEM4:
case ROM_BASE_MEM5:
if (!pvp->memBase[num] || (pvp->size[num] < biosSize))
return 0;
P_M_RANGE(range, tag ,pvp->memBase[num],biosSize,
ResExcMemBlock);
ret = pvp->memBase[num];
break;
case ROM_BASE_FIND:
ret = 0;
break;
default:
return 0; /* This should not happen */
}
/* Now find the ranges for validation */
getPciRangesForMapping(pvp,&m,&avoid);
if (!ret) {
/* Return a possible window */
ret = findPciRange(tag,m,avoid,biosSize);
} else {
#if !defined(__ia64__) /* on ia64, trust the kernel, don't look for overlaps */
if (mem)
pciConvertListToHost(pvp->bus,pvp->device,pvp->func, mem);
if (!xf86IsSubsetOf(range, m) ||
ChkConflict(&range, avoid, SETUP)
|| (mem && ChkConflict(&range, mem, SETUP)))
ret = 0;
#endif
}
xf86FreeResList(avoid);
xf86FreeResList(m);
return ret;
}
memType
getEmptyPciRange(PCITAG tag, int base_reg)
{
resPtr avoid = NULL, m = NULL;
memType ret;
pciVideoPtr pvp = getPciVideoPtr(tag);
if (!pvp) return 0;
getPciRangesForMapping(pvp,&m,&avoid);
ret = findPciRange(tag,m,avoid,pvp->size[base_reg]);
xf86FreeResList(avoid);
xf86FreeResList(m);
return ret;
}
/*
* xf86Bus.c interface
*/
void
xf86PciProbe(void)
{
/*
* Initialise the pcidata entry points.
*/
xf86SetupPciIds = (ScanPciSetupProcPtr)LoaderSymbol("ScanPciSetupPciIds");
xf86ClosePciIds = (ScanPciCloseProcPtr)LoaderSymbol("ScanPciClosePciIds");
xf86FindPciNamesByDevice =
(ScanPciFindByDeviceProcPtr)LoaderSymbol("ScanPciFindPciNamesByDevice");
xf86FindPciNamesBySubsys =
(ScanPciFindBySubsysProcPtr)LoaderSymbol("ScanPciFindPciNamesBySubsys");
if (!xf86SetupPciIds())
FatalError("xf86SetupPciIds() failed\n");
FindPCIVideoInfo();
}
static void alignBridgeRanges(PciBusPtr PciBusBase, PciBusPtr primary);
static void
printBridgeInfo(PciBusPtr PciBus)
{
char primary[8], secondary[8], subordinate[8], brbus[8];
xf86FormatPciBusNumber(PciBus->primary, primary);
xf86FormatPciBusNumber(PciBus->secondary, secondary);
xf86FormatPciBusNumber(PciBus->subordinate, subordinate);
xf86FormatPciBusNumber(PciBus->brbus, brbus);
xf86MsgVerb(X_INFO, 3, "Bus %s: bridge is at (%s:%d:%d), (%s,%s,%s),"
" BCTRL: 0x%04x (VGA_EN is %s)\n",
secondary, brbus, PciBus->brdev, PciBus->brfunc,
primary, secondary, subordinate, PciBus->brcontrol,
(PciBus->brcontrol & PCI_PCI_BRIDGE_VGA_EN) ?
"set" : "cleared");
if (PciBus->preferred_io) {
xf86MsgVerb(X_INFO, 3,
"Bus %s I/O range:\n", secondary);
xf86PrintResList(3, PciBus->preferred_io);
}
if (PciBus->preferred_mem) {
xf86MsgVerb(X_INFO, 3,
"Bus %s non-prefetchable memory range:\n", secondary);
xf86PrintResList(3, PciBus->preferred_mem);
}
if (PciBus->preferred_pmem) {
xf86MsgVerb(X_INFO, 3,
"Bus %s prefetchable memory range:\n", secondary);
xf86PrintResList(3, PciBus->preferred_pmem);
}
}
static PciBusPtr
xf86GetPciBridgeInfo(void)
{
const pciConfigPtr *pcrpp;
pciConfigPtr pcrp;
pciBusInfo_t *pBusInfo;
resRange range;
PciBusPtr PciBus, PciBusBase = NULL;
PciBusPtr *pnPciBus = &PciBusBase;
int MaxBus = 0;
int i, domain;
int primary, secondary, subordinate;
memType base, limit;
resPtr pciBusAccWindows = xf86PciBusAccWindowsFromOS();
if (xf86PciInfo == NULL)
return NULL;
/* Add each bridge */
for (pcrpp = xf86PciInfo, pcrp = *pcrpp; pcrp; pcrp = *(++pcrpp)) {
if (pcrp->busnum > MaxBus)
MaxBus = pcrp->busnum;
if ( pcrp->pci_base_class == PCI_CLASS_BRIDGE ) {
const int sub_class = pcrp->pci_sub_class;
domain = xf86GetPciDomain(pcrp->tag);
switch (sub_class) {
case PCI_SUBCLASS_BRIDGE_PCI:
/* something fishy about the header? If so: just ignore! */
if ((pcrp->pci_header_type & 0x7f) != 0x01) {
xf86MsgVerb(X_WARNING, 3, "PCI-PCI bridge at %x:%x:%x has"
" unexpected header: 0x%x",
pcrp->busnum, pcrp->devnum,
pcrp->funcnum, pcrp->pci_header_type);
break;
}
domain = pcrp->busnum & 0x0000FF00;
primary = pcrp->busnum;
secondary = domain | pcrp->pci_secondary_bus_number;
subordinate = domain | pcrp->pci_subordinate_bus_number;
/* Is this the correct bridge? If not, ignore it */
pBusInfo = pcrp->businfo;
if (pBusInfo && (pcrp != pBusInfo->bridge)) {
xf86MsgVerb(X_WARNING, 3, "PCI bridge mismatch for bus %x:"
" %x:%x:%x and %x:%x:%x\n", secondary,
pcrp->busnum, pcrp->devnum, pcrp->funcnum,
pBusInfo->bridge->busnum,
pBusInfo->bridge->devnum,
pBusInfo->bridge->funcnum);
break;
}
if (pBusInfo && pBusInfo->funcs->pciGetBridgeBuses)
(*pBusInfo->funcs->pciGetBridgeBuses)(secondary,
&primary,
&secondary,
&subordinate);
if (!pcrp->fakeDevice && (primary >= secondary)) {
xf86MsgVerb(X_WARNING, 3, "Misconfigured PCI bridge"
" %x:%x:%x (%x,%x)\n",
pcrp->busnum, pcrp->devnum, pcrp->funcnum,
primary, secondary);
break;
}
*pnPciBus = PciBus = xnfcalloc(1, sizeof(PciBusRec));
pnPciBus = &PciBus->next;
PciBus->primary = primary;
PciBus->secondary = secondary;
PciBus->subordinate = subordinate;
PciBus->brbus = pcrp->busnum;
PciBus->brdev = pcrp->devnum;
PciBus->brfunc = pcrp->funcnum;
PciBus->subclass = sub_class;
/* The Intel bridges don't report as transparent
but guess what they are - from Linux kernel - airlied */
if ((pcrp->pci_vendor == PCI_VENDOR_INTEL) &&
((pcrp->pci_device & 0xff00) == 0x2400)) {
xf86MsgVerb(X_INFO, 3, "Intel Bridge workaround enabled\n");
PciBus->interface = PCI_IF_BRIDGE_PCI_SUBTRACTIVE;
} else {
PciBus->interface = pcrp->pci_prog_if;
}
if (pBusInfo && pBusInfo->funcs->pciControlBridge)
PciBus->brcontrol =
(*pBusInfo->funcs->pciControlBridge)(secondary, 0, 0);
else
PciBus->brcontrol = pcrp->pci_bridge_control;
if (pBusInfo && pBusInfo->funcs->pciGetBridgeResources) {
(*pBusInfo->funcs->pciGetBridgeResources)(secondary,
(pointer *)&PciBus->preferred_io,
(pointer *)&PciBus->preferred_mem,
(pointer *)&PciBus->preferred_pmem);
break;
}
if ((pcrp->pci_command & PCI_CMD_IO_ENABLE) &&
(pcrp->pci_upper_io_base || pcrp->pci_io_base ||
pcrp->pci_upper_io_limit || pcrp->pci_io_limit)) {
base = (pcrp->pci_upper_io_base << 16) |
((pcrp->pci_io_base & 0xf0u) << 8);
limit = (pcrp->pci_upper_io_limit << 16) |
((pcrp->pci_io_limit & 0xf0u) << 8) | 0x0fff;
/*
* Deal with bridge ISA mode (256 wide ranges spaced 1K
* apart, but only in the first 64K).
*/
if (pcrp->pci_bridge_control & PCI_PCI_BRIDGE_ISA_EN) {
while ((base <= (CARD16)(-1)) && (base <= limit)) {
PCI_I_RANGE(range, pcrp->tag,
base, base + (CARD8)(-1),
ResIo | ResBlock | ResExclusive);
PciBus->preferred_io =
xf86AddResToList(PciBus->preferred_io,
&range, -1);
base += 0x0400;
}
}
if (base <= limit) {
PCI_I_RANGE(range, pcrp->tag, base, limit,
ResIo | ResBlock | ResExclusive);
PciBus->preferred_io =
xf86AddResToList(PciBus->preferred_io, &range, -1);
}
}
if (pcrp->pci_command & PCI_CMD_MEM_ENABLE) {
/*
* The P2P spec requires these next two, but some bridges
* don't comply. Err on the side of caution, making the not
* so bold assumption that no bridge would ever re-route the
* bottom megabyte.
*/
if (pcrp->pci_mem_base || pcrp->pci_mem_limit) {
base = pcrp->pci_mem_base & 0xfff0u;
limit = pcrp->pci_mem_limit & 0xfff0u;
if (base <= limit) {
PCI_M_RANGE(range, pcrp->tag,
base << 16, (limit << 16) | 0x0fffff,
ResMem | ResBlock | ResExclusive);
PciBus->preferred_mem =
xf86AddResToList(PciBus->preferred_mem, &range, -1);
}
}
if (pcrp->pci_prefetch_mem_base ||
pcrp->pci_prefetch_mem_limit ||
pcrp->pci_prefetch_upper_mem_base ||
pcrp->pci_prefetch_upper_mem_limit) {
base = pcrp->pci_prefetch_mem_base & 0xfff0u;
limit = pcrp->pci_prefetch_mem_limit & 0xfff0u;
#if defined(LONG64) || defined(WORD64)
base |= (memType)pcrp->pci_prefetch_upper_mem_base << 16;
limit |= (memType)pcrp->pci_prefetch_upper_mem_limit << 16;
#endif
if (base <= limit) {
PCI_M_RANGE(range, pcrp->tag,
base << 16, (limit << 16) | 0xfffff,
ResMem | ResBlock | ResExclusive);
PciBus->preferred_pmem =
xf86AddResToList(PciBus->preferred_pmem,
&range, -1);
}
}
}
break;
case PCI_SUBCLASS_BRIDGE_CARDBUS:
/* something fishy about the header? If so: just ignore! */
if ((pcrp->pci_header_type & 0x7f) != 0x02) {
xf86MsgVerb(X_WARNING, 3, "PCI-CardBus bridge at %x:%x:%x"
" has unexpected header: 0x%x",
pcrp->busnum, pcrp->devnum,
pcrp->funcnum, pcrp->pci_header_type);
break;
}
domain = pcrp->busnum & 0x0000FF00;
primary = pcrp->busnum;
secondary = domain | pcrp->pci_cb_cardbus_bus_number;
subordinate = domain | pcrp->pci_subordinate_bus_number;
/* Is this the correct bridge? If not, ignore it */
pBusInfo = pcrp->businfo;
if (pBusInfo && (pcrp != pBusInfo->bridge)) {
xf86MsgVerb(X_WARNING, 3, "CardBus bridge mismatch for bus"
" %x: %x:%x:%x and %x:%x:%x\n", secondary,
pcrp->busnum, pcrp->devnum, pcrp->funcnum,
pBusInfo->bridge->busnum,
pBusInfo->bridge->devnum,
pBusInfo->bridge->funcnum);
break;
}
if (pBusInfo && pBusInfo->funcs->pciGetBridgeBuses)
(*pBusInfo->funcs->pciGetBridgeBuses)(secondary,
&primary,
&secondary,
&subordinate);
if (primary >= secondary) {
if (pcrp->pci_cb_cardbus_bus_number != 0)
xf86MsgVerb(X_WARNING, 3, "Misconfigured CardBus"
" bridge %x:%x:%x (%x,%x)\n",
pcrp->busnum, pcrp->devnum, pcrp->funcnum,
primary, secondary);
break;
}
*pnPciBus = PciBus = xnfcalloc(1, sizeof(PciBusRec));
pnPciBus = &PciBus->next;
PciBus->primary = primary;
PciBus->secondary = secondary;
PciBus->subordinate = subordinate;
PciBus->brbus = pcrp->busnum;
PciBus->brdev = pcrp->devnum;
PciBus->brfunc = pcrp->funcnum;
PciBus->subclass = sub_class;
PciBus->interface = pcrp->pci_prog_if;
if (pBusInfo && pBusInfo->funcs->pciControlBridge)
PciBus->brcontrol =
(*pBusInfo->funcs->pciControlBridge)(secondary, 0, 0);
else
PciBus->brcontrol = pcrp->pci_bridge_control;
if (pBusInfo && pBusInfo->funcs->pciGetBridgeResources) {
(*pBusInfo->funcs->pciGetBridgeResources)(secondary,
(pointer *)&PciBus->preferred_io,
(pointer *)&PciBus->preferred_mem,
(pointer *)&PciBus->preferred_pmem);
break;
}
if (pcrp->pci_command & PCI_CMD_IO_ENABLE) {
if (pcrp->pci_cb_iobase0) {
base = PCI_CB_IOBASE(pcrp->pci_cb_iobase0);
limit = PCI_CB_IOLIMIT(pcrp->pci_cb_iolimit0);
/*
* Deal with bridge ISA mode (256-wide ranges spaced 1K
* apart (start to start), but only in the first 64K).
*/
if (pcrp->pci_bridge_control & PCI_PCI_BRIDGE_ISA_EN) {
while ((base <= (CARD16)(-1)) &&
(base <= limit)) {
PCI_I_RANGE(range, pcrp->tag,
base, base + (CARD8)(-1),
ResIo | ResBlock | ResExclusive);
PciBus->preferred_io =
xf86AddResToList(PciBus->preferred_io,
&range, -1);
base += 0x0400;
}
}
if (base <= limit) {
PCI_I_RANGE(range, pcrp->tag, base, limit,
ResIo | ResBlock | ResExclusive);
PciBus->preferred_io =
xf86AddResToList(PciBus->preferred_io,
&range, -1);
}
}
if (pcrp->pci_cb_iobase1) {
base = PCI_CB_IOBASE(pcrp->pci_cb_iobase1);
limit = PCI_CB_IOLIMIT(pcrp->pci_cb_iolimit1);
/*
* Deal with bridge ISA mode (256-wide ranges spaced 1K
* apart (start to start), but only in the first 64K).
*/
if (pcrp->pci_bridge_control & PCI_PCI_BRIDGE_ISA_EN) {
while ((base <= (CARD16)(-1)) &&
(base <= limit)) {
PCI_I_RANGE(range, pcrp->tag,
base, base + (CARD8)(-1),
ResIo | ResBlock | ResExclusive);
PciBus->preferred_io =
xf86AddResToList(PciBus->preferred_io,
&range, -1);
base += 0x0400;
}
}
if (base <= limit) {
PCI_I_RANGE(range, pcrp->tag, base, limit,
ResIo | ResBlock | ResExclusive);
PciBus->preferred_io =
xf86AddResToList(PciBus->preferred_io,
&range, -1);
}
}
}
if (pcrp->pci_command & PCI_CMD_MEM_ENABLE) {
if ((pcrp->pci_cb_membase0) &&
(pcrp->pci_cb_membase0 <= pcrp->pci_cb_memlimit0)) {
PCI_M_RANGE(range, pcrp->tag,
pcrp->pci_cb_membase0 & ~0x0fff,
pcrp->pci_cb_memlimit0 | 0x0fff,
ResMem | ResBlock | ResExclusive);
if (pcrp->pci_bridge_control &
PCI_CB_BRIDGE_CTL_PREFETCH_MEM0)
PciBus->preferred_pmem =
xf86AddResToList(PciBus->preferred_pmem,
&range, -1);
else
PciBus->preferred_mem =
xf86AddResToList(PciBus->preferred_mem,
&range, -1);
}
if ((pcrp->pci_cb_membase1) &&
(pcrp->pci_cb_membase1 <= pcrp->pci_cb_memlimit1)) {
PCI_M_RANGE(range, pcrp->tag,
pcrp->pci_cb_membase1 & ~0x0fff,
pcrp->pci_cb_memlimit1 | 0x0fff,
ResMem | ResBlock | ResExclusive);
if (pcrp->pci_bridge_control &
PCI_CB_BRIDGE_CTL_PREFETCH_MEM1)
PciBus->preferred_pmem =
xf86AddResToList(PciBus->preferred_pmem,
&range, -1);
else
PciBus->preferred_mem =
xf86AddResToList(PciBus->preferred_mem,
&range, -1);
}
}
break;
case PCI_SUBCLASS_BRIDGE_ISA:
case PCI_SUBCLASS_BRIDGE_EISA:
case PCI_SUBCLASS_BRIDGE_MC:
*pnPciBus = PciBus = xnfcalloc(1, sizeof(PciBusRec));
pnPciBus = &PciBus->next;
PciBus->primary = pcrp->busnum;
PciBus->secondary = PciBus->subordinate = -1;
PciBus->brbus = pcrp->busnum;
PciBus->brdev = pcrp->devnum;
PciBus->brfunc = pcrp->funcnum;
PciBus->subclass = sub_class;
PciBus->brcontrol = PCI_PCI_BRIDGE_VGA_EN;
break;
case PCI_SUBCLASS_BRIDGE_HOST:
/* Is this the correct bridge? If not, ignore bus info */
pBusInfo = pcrp->businfo;
if (!pBusInfo || pBusInfo == HOST_NO_BUS)
break;
secondary = 0;
/* Find "secondary" bus segment */
while (pBusInfo != pciBusInfo[secondary])
secondary++;
if (pcrp != pBusInfo->bridge) {
xf86MsgVerb(X_WARNING, 3, "Host bridge mismatch for"
" bus %x: %x:%x:%x and %x:%x:%x\n",
pBusInfo->primary_bus,
pcrp->busnum, pcrp->devnum, pcrp->funcnum,
pBusInfo->bridge->busnum,
pBusInfo->bridge->devnum,
pBusInfo->bridge->funcnum);
pBusInfo = NULL;
}
*pnPciBus = PciBus = xnfcalloc(1, sizeof(PciBusRec));
pnPciBus = &PciBus->next;
PciBus->primary = PciBus->secondary = secondary;
PciBus->subordinate = pciNumBuses - 1;
if (pBusInfo->funcs->pciGetBridgeBuses)
(*pBusInfo->funcs->pciGetBridgeBuses)
(secondary,
&PciBus->primary,
&PciBus->secondary,
&PciBus->subordinate);
PciBus->brbus = pcrp->busnum;
PciBus->brdev = pcrp->devnum;
PciBus->brfunc = pcrp->funcnum;
PciBus->subclass = sub_class;
if (pBusInfo && pBusInfo->funcs->pciControlBridge)
PciBus->brcontrol =
(*pBusInfo->funcs->pciControlBridge)(secondary, 0, 0);
else
PciBus->brcontrol = PCI_PCI_BRIDGE_VGA_EN;
if (pBusInfo && pBusInfo->funcs->pciGetBridgeResources) {
(*pBusInfo->funcs->pciGetBridgeResources)
(secondary,
(pointer *)&PciBus->preferred_io,
(pointer *)&PciBus->preferred_mem,
(pointer *)&PciBus->preferred_pmem);
break;
}
PciBus->preferred_io =
xf86ExtractTypeFromList(pciBusAccWindows,
RANGE_TYPE(ResIo, domain));
PciBus->preferred_mem =
xf86ExtractTypeFromList(pciBusAccWindows,
RANGE_TYPE(ResMem, domain));
PciBus->preferred_pmem =
xf86ExtractTypeFromList(pciBusAccWindows,
RANGE_TYPE(ResMem, domain));
break;
default:
break;
}
}
}
for (i = 0; i <= MaxBus; i++) { /* find PCI buses not attached to bridge */
if (!pciBusInfo[i])
continue;
for (PciBus = PciBusBase; PciBus; PciBus = PciBus->next)
if (PciBus->secondary == i) break;
if (!PciBus) { /* We assume it's behind a HOST-PCI bridge */
/*
* Find the 'smallest' free HOST-PCI bridge, where 'small' is in
* the order of pciTag().
*/
PCITAG minTag = 0xFFFFFFFF, tag;
PciBusPtr PciBusFound = NULL;
for (PciBus = PciBusBase; PciBus; PciBus = PciBus->next)
if ((PciBus->subclass == PCI_SUBCLASS_BRIDGE_HOST) &&
(PciBus->secondary == -1) &&
((tag = pciTag(PciBus->brbus,PciBus->brdev,PciBus->brfunc))
< minTag) ) {
minTag = tag;
PciBusFound = PciBus;
}
if (PciBusFound)
PciBusFound->secondary = i;
else { /* if nothing found it may not be visible: create new */
/* Find a device on this bus */
domain = 0;
for (pcrpp = xf86PciInfo; (pcrp = *pcrpp); pcrpp++) {
if (pcrp->busnum == i) {
domain = xf86GetPciDomain(pcrp->tag);
break;
}
}
*pnPciBus = PciBus = xnfcalloc(1, sizeof(PciBusRec));
pnPciBus = &PciBus->next;
PciBus->primary = PciBus->secondary = i;
PciBus->subclass = PCI_SUBCLASS_BRIDGE_HOST;
PciBus->brcontrol = PCI_PCI_BRIDGE_VGA_EN;
PciBus->preferred_io =
xf86ExtractTypeFromList(pciBusAccWindows,
RANGE_TYPE(ResIo, domain));
PciBus->preferred_mem =
xf86ExtractTypeFromList(pciBusAccWindows,
RANGE_TYPE(ResMem, domain));
PciBus->preferred_pmem =
xf86ExtractTypeFromList(pciBusAccWindows,
RANGE_TYPE(ResMem, domain));
}
}
}
for (PciBus = PciBusBase; PciBus; PciBus = PciBus->next) {
if (PciBus->primary == PciBus->secondary) {
alignBridgeRanges(PciBusBase, PciBus);
}
}
for (PciBus = PciBusBase; PciBus; PciBus = PciBus->next) {
switch (PciBus->subclass) {
case PCI_SUBCLASS_BRIDGE_PCI:
if (PciBus->interface == PCI_IF_BRIDGE_PCI_SUBTRACTIVE)
xf86MsgVerb(X_INFO, 3, "Subtractive PCI-to-PCI bridge:\n");
else
xf86MsgVerb(X_INFO, 3, "PCI-to-PCI bridge:\n");
break;
case PCI_SUBCLASS_BRIDGE_CARDBUS:
xf86MsgVerb(X_INFO, 3, "PCI-to-CardBus bridge:\n");
break;
case PCI_SUBCLASS_BRIDGE_HOST:
xf86MsgVerb(X_INFO, 3, "Host-to-PCI bridge:\n");
break;
case PCI_SUBCLASS_BRIDGE_ISA:
xf86MsgVerb(X_INFO, 3, "PCI-to-ISA bridge:\n");
break;
case PCI_SUBCLASS_BRIDGE_EISA:
xf86MsgVerb(X_INFO, 3, "PCI-to-EISA bridge:\n");
break;
case PCI_SUBCLASS_BRIDGE_MC:
xf86MsgVerb(X_INFO, 3, "PCI-to-MCA bridge:\n");
break;
default:
break;
}
printBridgeInfo(PciBus);
}
xf86FreeResList(pciBusAccWindows);
return PciBusBase;
}
static void
alignBridgeRanges(PciBusPtr PciBusBase, PciBusPtr primary)
{
PciBusPtr PciBus;
for (PciBus = PciBusBase; PciBus; PciBus = PciBus->next) {
if ((PciBus != primary) && (PciBus->primary != -1)
&& (PciBus->primary == primary->secondary)) {
resPtr tmp;
tmp = xf86FindIntersectOfLists(primary->preferred_io,
PciBus->preferred_io);
xf86FreeResList(PciBus->preferred_io);
PciBus->preferred_io = tmp;
tmp = xf86FindIntersectOfLists(primary->preferred_pmem,
PciBus->preferred_pmem);
xf86FreeResList(PciBus->preferred_pmem);
PciBus->preferred_pmem = tmp;
tmp = xf86FindIntersectOfLists(primary->preferred_mem,
PciBus->preferred_mem);
xf86FreeResList(PciBus->preferred_mem);
PciBus->preferred_mem = tmp;
/* Deal with subtractive decoding */
switch (PciBus->subclass) {
case PCI_SUBCLASS_BRIDGE_PCI:
if (PciBus->interface != PCI_IF_BRIDGE_PCI_SUBTRACTIVE)
break;
/* Fall through */
#if 0 /* Not yet */
case PCI_SUBCLASS_BRIDGE_ISA:
case PCI_SUBCLASS_BRIDGE_EISA:
case PCI_SUBCLASS_BRIDGE_MC:
#endif
if (!(PciBus->io = primary->io))
PciBus->io = primary->preferred_io;
if (!(PciBus->mem = primary->mem))
PciBus->mem = primary->preferred_mem;
if (!(PciBus->pmem = primary->pmem))
PciBus->pmem = primary->preferred_pmem;
default:
break;
}
alignBridgeRanges(PciBusBase, PciBus);
}
}
}
void
ValidatePci(void)
{
pciVideoPtr pvp, pvp1;
PciBusPtr pbp;
pciConfigPtr pcrp, *pcrpp;
CARD32 *basep;
resPtr Sys;
resRange range;
int n = 0, m, i;
if (!xf86PciVideoInfo) return;
/*
* Mark all pciInfoRecs that need to be validated. These are
* the ones which have been assigned to a screen.
*/
Sys = xf86DupResList(osRes);
/* Only validate graphics devices in use */
for (i=0; i<xf86NumScreens; i++) {
for (m = 0; m < xf86Screens[i]->numEntities; m++)
if ((pvp = xf86GetPciInfoForEntity(xf86Screens[i]->entityList[m])))
pvp->validate = TRUE;
}
/*
* Collect all background PCI resources we need to validate against.
* These are all resources which don't belong to PCINONSYSTEMCLASSES
* and which have not been assigned to an entity.
*/
/* First get the PCIINFOCLASSES */
m = 0;
while ((pvp = xf86PciVideoInfo[m++])) {
/* is it a PCINONSYSTEMCLASS? */
if (PCINONSYSTEMCLASSES(pvp->class, pvp->subclass))
continue;
/* has it an Entity assigned to it? */
for (i=0; i<xf86NumEntities; i++) {
EntityPtr p = xf86Entities[i];
if (p->busType != BUS_PCI)
continue;
if (p->pciBusId.bus == pvp->bus
&& p->pciBusId.device == pvp->device
&& p->pciBusId.func == pvp->func)
break;
}
if (i != xf86NumEntities) /* found an Entity for this one */
continue;
for (i = 0; i<6; i++) {
if (pvp->ioBase[i]) {
PV_I_RANGE(range,pvp,i,ResExcIoBlock);
Sys = xf86AddResToList(Sys,&range,-1);
} else if (pvp->memBase[i]) {
PV_M_RANGE(range,pvp,i,ResExcMemBlock);
Sys = xf86AddResToList(Sys,&range,-1);
}
}
}
for (pcrpp = xf86PciInfo, pcrp = *pcrpp; pcrp; pcrp = *++(pcrpp)) {
/* These were handled above */
if (PCIINFOCLASSES(pcrp->pci_base_class, pcrp->pci_sub_class))
continue;
if ((pcrp->pci_header_type & 0x7f) ||
!(pcrp->pci_command & (PCI_CMD_IO_ENABLE | PCI_CMD_MEM_ENABLE)))
continue;
basep = &pcrp->pci_base0;
for (i = 0; i < 6; i++) {
if (basep[i]) {
if (PCI_MAP_IS_IO(basep[i])) {
if (!(pcrp->pci_command & PCI_CMD_IO_ENABLE))
continue;
P_I_RANGE(range, pcrp->tag, PCIGETIO(basep[i]),
pcrp->basesize[i], ResExcIoBlock)
} else if (!PCI_MAP_IS64BITMEM(basep[i])) {
if (!(pcrp->pci_command & PCI_CMD_MEM_ENABLE))
continue;
P_M_RANGE(range, pcrp->tag, PCIGETMEMORY(basep[i]),
pcrp->basesize[i], ResExcMemBlock)
} else {
i++;
if (!(pcrp->pci_command & PCI_CMD_MEM_ENABLE))
continue;
#if defined(LONG64) || defined(WORD64)
P_M_RANGE(range, pcrp->tag, PCIGETMEMORY64(basep[i-1]),
pcrp->basesize[i-1], ResExcMemBlock)
#else
if (basep[i])
continue;
P_M_RANGE(range, pcrp->tag, PCIGETMEMORY(basep[i-1]),
pcrp->basesize[i-1], ResExcMemBlock)
#endif
}
Sys = xf86AddResToList(Sys, &range, -1);
}
}
if ((pcrp->pci_baserom) &&
(pcrp->pci_command & PCI_CMD_MEM_ENABLE) &&
(pcrp->pci_baserom & PCI_MAP_ROM_DECODE_ENABLE)) {
P_M_RANGE(range,pcrp->tag,PCIGETROM(pcrp->pci_baserom),
pcrp->basesize[6],ResExcMemBlock);
Sys = xf86AddResToList(Sys, &range, -1);
}
}
#ifdef DEBUG
xf86MsgVerb(X_INFO, 3,"Sys:\n");
xf86PrintResList(3,Sys);
#endif
/*
* The order the video devices are listed in is
* just right: the lower buses come first.
* This way we attempt to fix a conflict of
* a lower bus device with a higher bus device
* where we have more room to find different
* resources.
*/
while ((pvp = xf86PciVideoInfo[n++])) {
resPtr res_mp = NULL, res_m_io = NULL;
resPtr NonSys;
resPtr tmp, avoid = NULL;
if (!pvp->validate) continue;
NonSys = xf86DupResList(Sys);
m = n;
while ((pvp1 = xf86PciVideoInfo[m++])) {
if (!pvp1->validate) continue;
for (i = 0; i<6; i++) {
if (pvp1->ioBase[i]) {
PV_I_RANGE(range,pvp1,i,ResExcIoBlock);
NonSys = xf86AddResToList(NonSys,&range,-1);
} else if (pvp1->memBase[i]) {
PV_M_RANGE(range,pvp1,i,ResExcMemBlock);
NonSys = xf86AddResToList(NonSys,&range,-1);
}
}
}
#ifdef DEBUG
xf86MsgVerb(X_INFO, 3,"NonSys:\n");
xf86PrintResList(3,NonSys);
#endif
pbp = xf86PciBus;
while (pbp) {
if (pbp->secondary == pvp->bus) {
if (pbp->preferred_pmem) {
/* keep prefetchable separate */
res_mp =
xf86FindIntersectOfLists(pbp->preferred_pmem, ResRange);
}
if (pbp->pmem) {
res_mp = xf86FindIntersectOfLists(pbp->pmem, ResRange);
}
if (pbp->preferred_mem) {
res_m_io =
xf86FindIntersectOfLists(pbp->preferred_mem, ResRange);
}
if (pbp->mem) {
res_m_io = xf86FindIntersectOfLists(pbp->mem, ResRange);
}
if (pbp->preferred_io) {
res_m_io = xf86JoinResLists(res_m_io,
xf86FindIntersectOfLists(pbp->preferred_io, ResRange));
}
if (pbp->io) {
res_m_io = xf86JoinResLists(res_m_io,
xf86FindIntersectOfLists(pbp->preferred_io, ResRange));
}
} else if ((pbp->primary == pvp->bus) &&
(pbp->secondary >= 0) &&
(pbp->primary != pbp->secondary)) {
tmp = xf86DupResList(pbp->preferred_pmem);
avoid = xf86JoinResLists(avoid, tmp);
tmp = xf86DupResList(pbp->preferred_mem);
avoid = xf86JoinResLists(avoid, tmp);
tmp = xf86DupResList(pbp->preferred_io);
avoid = xf86JoinResLists(avoid, tmp);
}
pbp = pbp->next;
}
if (res_m_io == NULL)
res_m_io = xf86DupResList(ResRange);
pciConvertListToHost(pvp->bus,pvp->device,pvp->func, avoid);
#ifdef DEBUG
xf86MsgVerb(X_INFO, 3,"avoid:\n");
xf86PrintResList(3,avoid);
xf86MsgVerb(X_INFO, 3,"prefetchable Memory:\n");
xf86PrintResList(3,res_mp);
xf86MsgVerb(X_INFO, 3,"MEM/IO:\n");
xf86PrintResList(3,res_m_io);
#endif
for (i = 0; i < 6; i++) {
int j;
resPtr own = NULL;
for (j = i+1; j < 6; j++) {
if (pvp->ioBase[j]) {
PV_I_RANGE(range,pvp,j,ResExcIoBlock);
own = xf86AddResToList(own,&range,-1);
} else if (pvp->memBase[j]) {
PV_M_RANGE(range,pvp,j,ResExcMemBlock);
own = xf86AddResToList(own,&range,-1);
}
}
#ifdef DEBUG
xf86MsgVerb(X_INFO, 3, "own:\n");
xf86PrintResList(3, own);
#endif
if (pvp->ioBase[i]) {
PV_I_RANGE(range,pvp,i,ResExcIoBlock);
if (xf86IsSubsetOf(range,res_m_io)
&& ! ChkConflict(&range,own,SETUP)
&& ! ChkConflict(&range,avoid,SETUP)
&& ! ChkConflict(&range,NonSys,SETUP)) {
xf86FreeResList(own);
continue;
}
xf86MsgVerb(X_WARNING, 0,
"****INVALID IO ALLOCATION**** b: 0x%lx e: 0x%lx "
"correcting\a\n", range.rBegin,range.rEnd);
#ifdef DEBUG
sleep(2);
#endif
fixPciResource(i, 0, pvp, range.type);
} else if (pvp->memBase[i]) {
PV_M_RANGE(range,pvp,i,ResExcMemBlock);
if (pvp->type[i] & PCI_MAP_MEMORY_CACHABLE) {
if (xf86IsSubsetOf(range,res_mp)
&& ! ChkConflict(&range,own,SETUP)
&& ! ChkConflict(&range,avoid,SETUP)
&& ! ChkConflict(&range,NonSys,SETUP)) {
xf86FreeResList(own);
continue;
}
}
if (xf86IsSubsetOf(range,res_m_io)
&& ! ChkConflict(&range,own,SETUP)
&& ! ChkConflict(&range,avoid,SETUP)
&& ! ChkConflict(&range,NonSys,SETUP)) {
xf86FreeResList(own);
continue;
}
xf86MsgVerb(X_WARNING, 0,
"****INVALID MEM ALLOCATION**** b: 0x%lx e: 0x%lx "
"correcting\a\n", range.rBegin,range.rEnd);
if (ChkConflict(&range,own,SETUP)) {
xf86MsgVerb(X_INFO,3,"own\n");
xf86PrintResList(3,own);
}
if (ChkConflict(&range,avoid,SETUP)) {
xf86MsgVerb(X_INFO,3,"avoid\n");
xf86PrintResList(3,avoid);
}
if (ChkConflict(&range,NonSys,SETUP)) {
xf86MsgVerb(X_INFO,3,"NonSys\n");
xf86PrintResList(3,NonSys);
}
#ifdef DEBUG
sleep(2);
#endif
fixPciResource(i, 0, pvp, range.type);
}
xf86FreeResList(own);
}
xf86FreeResList(avoid);
xf86FreeResList(NonSys);
xf86FreeResList(res_mp);
xf86FreeResList(res_m_io);
}
xf86FreeResList(Sys);
}
resList
GetImplicitPciResources(int entityIndex)
{
pciVideoPtr pvp;
int i;
resList list = NULL;
int num = 0;
if (! (pvp = xf86GetPciInfoForEntity(entityIndex))) return NULL;
for (i = 0; i < 6; i++) {
if (pvp->ioBase[i]) {
list = xnfrealloc(list,sizeof(resRange) * (++num));
PV_I_RANGE(list[num - 1],pvp,i,ResShrIoBlock | ResBios);
} else if (pvp->memBase[i]) {
list = xnfrealloc(list,sizeof(resRange) * (++num));
PV_M_RANGE(list[num - 1],pvp,i,ResShrMemBlock | ResBios);
}
}
#if 0
if (pvp->biosBase) {
list = xnfrealloc(list,sizeof(resRange) * (++num));
PV_B_RANGE(list[num - 1],pvp,ResShrMemBlock | ResBios);
}
#endif
list = xnfrealloc(list,sizeof(resRange) * (++num));
list[num - 1].type = ResEnd;
return list;
}
void
initPciState(void)
{
int i = 0;
int j = 0;
pciVideoPtr pvp;
pciAccPtr pcaccp;
if (xf86PciAccInfo != NULL)
return;
if (xf86PciVideoInfo == NULL)
return;
while ((pvp = xf86PciVideoInfo[i]) != NULL) {
i++;
j++;
xf86PciAccInfo = xnfrealloc(xf86PciAccInfo,
sizeof(pciAccPtr) * (j + 1));
xf86PciAccInfo[j] = NULL;
pcaccp = xf86PciAccInfo[j - 1] = xnfalloc(sizeof(pciAccRec));
pcaccp->busnum = pvp->bus;
pcaccp->devnum = pvp->device;
pcaccp->funcnum = pvp->func;
pcaccp->arg.tag = pciTag(pvp->bus, pvp->device, pvp->func);
pcaccp->ioAccess.AccessDisable = pciIoAccessDisable;
pcaccp->ioAccess.AccessEnable = pciIoAccessEnable;
pcaccp->ioAccess.arg = &pcaccp->arg;
pcaccp->io_memAccess.AccessDisable = pciIo_MemAccessDisable;
pcaccp->io_memAccess.AccessEnable = pciIo_MemAccessEnable;
pcaccp->io_memAccess.arg = &pcaccp->arg;
pcaccp->memAccess.AccessDisable = pciMemAccessDisable;
pcaccp->memAccess.AccessEnable = pciMemAccessEnable;
pcaccp->memAccess.arg = &pcaccp->arg;
if (PCISHAREDIOCLASSES(pvp->class, pvp->subclass))
pcaccp->ctrl = TRUE;
else
pcaccp->ctrl = FALSE;
savePciState(pcaccp->arg.tag, &pcaccp->save);
pcaccp->arg.ctrl = pcaccp->save.command;
}
}
/*
* initPciBusState() - fill out the BusAccRec for a PCI bus.
* Theory: each bus is associated with one bridge connecting it
* to its parent bus. The address of a bridge is therefore stored
* in the BusAccRec of the bus it connects to. Each bus can
* have several bridges connecting secondary buses to it. Only one
* of these bridges can be open. Therefore the status of a bridge
* associated with a bus is stored in the BusAccRec of the parent
* the bridge connects to. The first member of the structure is
* a pointer to a function that open access to this bus. This function
* receives a pointer to the structure itself as argument. This
* design should be common to BusAccRecs of any type of buses we
* support. The remeinder of the structure is bus type specific.
* In this case it contains a pointer to the structure of the
* parent bus. Thus enabling access to a specific bus is simple:
* 1. Close any bridge going to secondary buses.
* 2. Climb down the ladder and enable any bridge on buses
* on the path from the CPU to this bus.
*/
void
initPciBusState(void)
{
BusAccPtr pbap, pbap_tmp;
PciBusPtr pbp = xf86PciBus;
pciBusInfo_t *pBusInfo;
while (pbp) {
pbap = xnfcalloc(1,sizeof(BusAccRec));
pbap->busdep.pci.bus = pbp->secondary;
pbap->busdep.pci.primary_bus = pbp->primary;
pbap->busdep_type = BUS_PCI;
pbap->busdep.pci.acc = PCITAG_SPECIAL;
if ((pbp->secondary >= 0) && (pbp->secondary < pciNumBuses) &&
(pBusInfo = pciBusInfo[pbp->secondary]) &&
pBusInfo->funcs->pciControlBridge) {
pbap->type = BUS_PCI;
pbap->save_f = savePciDrvBusState;
pbap->restore_f = restorePciDrvBusState;
pbap->set_f = pciSetBusAccess;
pbap->enable_f = pciDrvBusAccessEnable;
pbap->disable_f = pciDrvBusAccessDisable;
savePciDrvBusState(pbap);
} else switch (pbp->subclass) {
case PCI_SUBCLASS_BRIDGE_HOST:
pbap->type = BUS_PCI;
pbap->set_f = pciSetBusAccess;
break;
case PCI_SUBCLASS_BRIDGE_PCI:
case PCI_SUBCLASS_BRIDGE_CARDBUS:
pbap->type = BUS_PCI;
pbap->save_f = savePciBusState;
pbap->restore_f = restorePciBusState;
pbap->set_f = pciSetBusAccess;
pbap->enable_f = pciBusAccessEnable;
pbap->disable_f = pciBusAccessDisable;
pbap->busdep.pci.acc = pciTag(pbp->brbus,pbp->brdev,pbp->brfunc);
savePciBusState(pbap);
break;
case PCI_SUBCLASS_BRIDGE_ISA:
case PCI_SUBCLASS_BRIDGE_EISA:
case PCI_SUBCLASS_BRIDGE_MC:
pbap->type = BUS_ISA;
pbap->set_f = pciSetBusAccess;
break;
}
pbap->next = xf86BusAccInfo;
xf86BusAccInfo = pbap;
pbp = pbp->next;
}
pbap = xf86BusAccInfo;
while (pbap) {
pbap->primary = NULL;
if (pbap->busdep_type == BUS_PCI
&& pbap->busdep.pci.primary_bus > -1) {
pbap_tmp = xf86BusAccInfo;
while (pbap_tmp) {
if (pbap_tmp->busdep_type == BUS_PCI &&
pbap_tmp->busdep.pci.bus == pbap->busdep.pci.primary_bus) {
/* Don't create loops */
if (pbap == pbap_tmp)
break;
pbap->primary = pbap_tmp;
break;
}
pbap_tmp = pbap_tmp->next;
}
}
pbap = pbap->next;
}
}
void
PciStateEnter(void)
{
pciAccPtr paccp;
int i = 0;
if (xf86PciAccInfo == NULL)
return;
while ((paccp = xf86PciAccInfo[i]) != NULL) {
i++;
if (!paccp->ctrl)
continue;
savePciState(paccp->arg.tag, &paccp->save);
restorePciState(paccp->arg.tag, &paccp->restore);
paccp->arg.ctrl = paccp->restore.command;
}
}
void
PciBusStateEnter(void)
{
BusAccPtr pbap = xf86BusAccInfo;
while (pbap) {
if (pbap->save_f)
pbap->save_f(pbap);
pbap = pbap->next;
}
}
void
PciStateLeave(void)
{
pciAccPtr paccp;
int i = 0;
if (xf86PciAccInfo == NULL)
return;
while ((paccp = xf86PciAccInfo[i]) != NULL) {
i++;
if (!paccp->ctrl)
continue;
savePciState(paccp->arg.tag, &paccp->restore);
restorePciState(paccp->arg.tag, &paccp->save);
}
}
void
PciBusStateLeave(void)
{
BusAccPtr pbap = xf86BusAccInfo;
while (pbap) {
if (pbap->restore_f)
pbap->restore_f(pbap);
pbap = pbap->next;
}
}
void
DisablePciAccess(void)
{
int i = 0;
pciAccPtr paccp;
if (xf86PciAccInfo == NULL)
return;
while ((paccp = xf86PciAccInfo[i]) != NULL) {
i++;
if (!paccp->ctrl) /* disable devices that are under control initially*/
continue;
pciIo_MemAccessDisable(paccp->io_memAccess.arg);
}
}
void
DisablePciBusAccess(void)
{
BusAccPtr pbap = xf86BusAccInfo;
while (pbap) {
if (pbap->disable_f)
pbap->disable_f(pbap);
if (pbap->primary)
pbap->primary->current = NULL;
pbap = pbap->next;
}
}
/*
* Public functions
*/
_X_EXPORT Bool
xf86IsPciDevPresent(int bus, int dev, int func)
{
int i = 0;
pciConfigPtr pcp;
while ((pcp = xf86PciInfo[i]) != NULL) {
if ((pcp->busnum == bus)
&& (pcp->devnum == dev)
&& (pcp->funcnum == func))
return TRUE;
i++;
}
return FALSE;
}
/*
* If the slot requested is already in use, return -1.
* Otherwise, claim the slot for the screen requesting it.
*/
_X_EXPORT int
xf86ClaimPciSlot(int bus, int device, int func, DriverPtr drvp,
int chipset, GDevPtr dev, Bool active)
{
EntityPtr p = NULL;
pciAccPtr *ppaccp = xf86PciAccInfo;
BusAccPtr pbap = xf86BusAccInfo;
int num;
if (xf86CheckPciSlot(bus, device, func)) {
num = xf86AllocateEntity();
p = xf86Entities[num];
p->driver = drvp;
p->chipset = chipset;
p->busType = BUS_PCI;
p->pciBusId.bus = bus;
p->pciBusId.device = device;
p->pciBusId.func = func;
p->active = active;
p->inUse = FALSE;
if (dev)
xf86AddDevToEntity(num, dev);
/* Here we initialize the access structure */
p->access = xnfcalloc(1,sizeof(EntityAccessRec));
while (ppaccp && *ppaccp) {
if ((*ppaccp)->busnum == bus
&& (*ppaccp)->devnum == device
&& (*ppaccp)->funcnum == func) {
p->access->fallback = &(*ppaccp)->io_memAccess;
p->access->pAccess = &(*ppaccp)->io_memAccess;
(*ppaccp)->ctrl = TRUE; /* mark control if not already */
break;
}
ppaccp++;
}
if (!ppaccp || !*ppaccp) {
p->access->fallback = &AccessNULL;
p->access->pAccess = &AccessNULL;
}
p->busAcc = NULL;
while (pbap) {
if (pbap->type == BUS_PCI && pbap->busdep.pci.bus == bus)
p->busAcc = pbap;
pbap = pbap->next;
}
fixPciSizeInfo(num);
/* in case bios is enabled disable it */
disablePciBios(pciTag(bus,device,func));
pciSlotClaimed = TRUE;
if (active) {
/* Map in this domain's I/O space */
p->domainIO = xf86MapDomainIO(-1, VIDMEM_MMIO,
pciTag(bus, device, func), 0, 1);
}
return num;
} else
return -1;
}
/*
* Get xf86PciVideoInfo for a driver.
*/
_X_EXPORT pciVideoPtr *
xf86GetPciVideoInfo(void)
{
return xf86PciVideoInfo;
}
/* --- Used by ATI driver, but also more generally useful */
/*
* Get the full xf86scanpci data.
*/
_X_EXPORT pciConfigPtr *
xf86GetPciConfigInfo(void)
{
return xf86PciInfo;
}
/*
* Enable a device and route VGA to it. This is intended for a driver's
* Probe(), before creating EntityRec's. Only one device can be thus enabled
* at any one time, and should be disabled when the driver is done with it.
*
* The following special calls are also available:
*
* pvp == NULL && rt == NONE disable previously enabled device
* pvp != NULL && rt == NONE ensure device is disabled
* pvp == NULL && rt != NONE disable >all< subsequent calls to this function
* (done from xf86PostProbe())
* The last combination has been removed! To do this cleanly we have
* to implement stages and need to test at each stage dependent function
* if it is allowed to execute.
*
* The device represented by pvp may not have been previously claimed.
*/
_X_EXPORT void
xf86SetPciVideo(pciVideoPtr pvp, resType rt)
{
static BusAccPtr pbap = NULL;
static xf86AccessPtr pAcc = NULL;
static Bool DoneProbes = FALSE;
pciAccPtr pcaccp;
int i;
if (DoneProbes)
return;
/* Disable previous access */
if (pAcc) {
if (pAcc->AccessDisable)
(*pAcc->AccessDisable)(pAcc->arg);
pAcc = NULL;
}
if (pbap) {
while (pbap->primary) {
if (pbap->disable_f)
(*pbap->disable_f)(pbap);
pbap->primary->current = NULL;
pbap = pbap->primary;
}
pbap = NULL;
}
/* Check for xf86PostProbe's magic combo */
if (!pvp) {
if (rt != NONE)
DoneProbes = TRUE;
return;
}
/* Validate device */
if (!xf86PciVideoInfo || !xf86PciAccInfo || !xf86BusAccInfo)
return;
for (i = 0; pvp != xf86PciVideoInfo[i]; i++)
if (!xf86PciVideoInfo[i])
return;
/* Ignore request for claimed adapters */
if (!xf86CheckPciSlot(pvp->bus, pvp->device, pvp->func))
return;
/* Find pciAccRec structure */
for (i = 0; ; i++) {
if (!(pcaccp = xf86PciAccInfo[i]))
return;
if ((pvp->bus == pcaccp->busnum) &&
(pvp->device == pcaccp->devnum) &&
(pvp->func == pcaccp->funcnum))
break;
}
if (rt == NONE) {
/* This is a call to ensure the adapter is disabled */
if (pcaccp->io_memAccess.AccessDisable)
(*pcaccp->io_memAccess.AccessDisable)(pcaccp->io_memAccess.arg);
return;
}
/* Find BusAccRec structure */
for (pbap = xf86BusAccInfo; ; pbap = pbap->next) {
if (!pbap)
return;
if (pvp->bus == pbap->busdep.pci.bus)
break;
}
/* Route VGA */
if (pbap->set_f)
(*pbap->set_f)(pbap);
/* Enable device */
switch (rt) {
case IO:
pAcc = &pcaccp->ioAccess;
break;
case MEM_IO:
pAcc = &pcaccp->io_memAccess;
break;
case MEM:
pAcc = &pcaccp->memAccess;
break;
default: /* no compiler noise */
break;
}
if (pAcc && pAcc->AccessEnable)
(*pAcc->AccessEnable)(pAcc->arg);
}
/*
* Parse a BUS ID string, and return the PCI bus parameters if it was
* in the correct format for a PCI bus id.
*/
_X_EXPORT Bool
xf86ParsePciBusString(const char *busID, int *bus, int *device, int *func)
{
/*
* The format is assumed to be "bus[@domain]:device[:func]", where domain,
* bus, device and func are decimal integers. domain and func may be
* omitted and assumed to be zero, although doing this isn't encouraged.
*/
char *p, *s, *d;
const char *id;
int i;
if (StringToBusType(busID, &id) != BUS_PCI)
return FALSE;
s = xstrdup(id);
p = strtok(s, ":");
if (p == NULL || *p == 0) {
xfree(s);
return FALSE;
}
d = strpbrk(p, "@");
if (d != NULL) {
*(d++) = 0;
for (i = 0; d[i] != 0; i++) {
if (!isdigit(d[i])) {
xfree(s);
return FALSE;
}
}
}
for (i = 0; p[i] != 0; i++) {
if (!isdigit(p[i])) {
xfree(s);
return FALSE;
}
}
*bus = atoi(p);
if (d != NULL && *d != 0)
*bus += atoi(d) << 8;
p = strtok(NULL, ":");
if (p == NULL || *p == 0) {
xfree(s);
return FALSE;
}
for (i = 0; p[i] != 0; i++) {
if (!isdigit(p[i])) {
xfree(s);
return FALSE;
}
}
*device = atoi(p);
*func = 0;
p = strtok(NULL, ":");
if (p == NULL || *p == 0) {
xfree(s);
return TRUE;
}
for (i = 0; p[i] != 0; i++) {
if (!isdigit(p[i])) {
xfree(s);
return FALSE;
}
}
*func = atoi(p);
xfree(s);
return TRUE;
}
/*
* Compare a BUS ID string with a PCI bus id. Return TRUE if they match.
*/
_X_EXPORT Bool
xf86ComparePciBusString(const char *busID, int bus, int device, int func)
{
int ibus, idevice, ifunc;
if (xf86ParsePciBusString(busID, &ibus, &idevice, &ifunc)) {
return bus == ibus && device == idevice && func == ifunc;
} else {
return FALSE;
}
}
/*
* xf86IsPrimaryPci() -- return TRUE if primary device
* is PCI and bus, dev and func numbers match.
*/
_X_EXPORT Bool
xf86IsPrimaryPci(pciVideoPtr pPci)
{
if (primaryBus.type != BUS_PCI) return FALSE;
return (pPci->bus == primaryBus.id.pci.bus &&
pPci->device == primaryBus.id.pci.device &&
pPci->func == primaryBus.id.pci.func);
}
/*
* xf86GetPciInfoForEntity() -- Get the pciVideoRec of entity.
*/
_X_EXPORT pciVideoPtr
xf86GetPciInfoForEntity(int entityIndex)
{
pciVideoPtr *ppPci;
EntityPtr p;
if (entityIndex >= xf86NumEntities)
return NULL;
p = xf86Entities[entityIndex];
if (p->busType != BUS_PCI)
return NULL;
for (ppPci = xf86PciVideoInfo; *ppPci != NULL; ppPci++) {
if (p->pciBusId.bus == (*ppPci)->bus &&
p->pciBusId.device == (*ppPci)->device &&
p->pciBusId.func == (*ppPci)->func)
return (*ppPci);
}
return NULL;
}
_X_EXPORT int
xf86GetPciEntity(int bus, int dev, int func)
{
int i;
for (i = 0; i < xf86NumEntities; i++) {
EntityPtr p = xf86Entities[i];
if (p->busType != BUS_PCI) continue;
if (p->pciBusId.bus == bus &&
p->pciBusId.device == dev &&
p->pciBusId.func == func)
return i;
}
return -1;
}
/*
* xf86CheckPciMemBase() checks that the memory base value matches one of the
* PCI base address register values for the given PCI device.
*/
_X_EXPORT Bool
xf86CheckPciMemBase(pciVideoPtr pPci, memType base)
{
int i;
for (i = 0; i < 6; i++)
if (base == pPci->memBase[i])
return TRUE;
return FALSE;
}
/*
* Check if the slot requested is free. If it is already in use, return FALSE.
*/
_X_EXPORT Bool
xf86CheckPciSlot(int bus, int device, int func)
{
int i;
EntityPtr p;
for (i = 0; i < xf86NumEntities; i++) {
p = xf86Entities[i];
/* Check if this PCI slot is taken */
if (p->busType == BUS_PCI && p->pciBusId.bus == bus &&
p->pciBusId.device == device && p->pciBusId.func == func)
return FALSE;
}
return TRUE;
}
/*
* xf86FindPciVendorDevice() xf86FindPciClass(): These functions
* are meant to be used by the pci bios emulation. Some bioses
* need to see if there are _other_ chips of the same type around
* so by setting pvp_exclude one pci device can be explicitely
* _excluded if required.
*/
_X_EXPORT pciVideoPtr
xf86FindPciDeviceVendor(CARD16 vendorID, CARD16 deviceID,
char n, pciVideoPtr pvp_exclude)
{
pciVideoPtr pvp, *ppvp;
n++;
for (ppvp = xf86PciVideoInfo, pvp =*ppvp; pvp ; pvp = *(++ppvp)) {
if (pvp == pvp_exclude) continue;
if ((pvp->vendor == vendorID) && (pvp->chipType == deviceID)) {
if (!(--n)) break;
}
}
return pvp;
}
_X_EXPORT pciVideoPtr
xf86FindPciClass(CARD8 intf, CARD8 subClass, CARD16 class,
char n, pciVideoPtr pvp_exclude)
{
pciVideoPtr pvp, *ppvp;
n++;
for (ppvp = xf86PciVideoInfo, pvp =*ppvp; pvp ; pvp = *(++ppvp)) {
if (pvp == pvp_exclude) continue;
if ((pvp->interface == intf) && (pvp->subclass == subClass)
&& (pvp->class == class)) {
if (!(--n)) break;
}
}
return pvp;
}
/*
* This attempts to detect a multi-device card and sets up a list
* of pci tags of the devices of this card. On some of these
* cards the BIOS is not visible from all chipsets. We therefore
* need to use the BIOS from a chipset where it is visible.
* We do the following heuristics:
* If we detect only identical pci devices on a bus we assume it's
* a multi-device card. This assumption isn't true always, however.
* One might just use identical cards on a bus. We therefore don't
* detect this situation when we set up the PCI video info. Instead
* we wait until an attempt to read the BIOS fails.
*/
int
pciTestMultiDeviceCard(int bus, int dev, int func, PCITAG** pTag)
{
pciConfigPtr *ppcrp = xf86PciInfo;
pciConfigPtr pcrp = NULL;
int i,j;
Bool multicard = FALSE;
Bool multifunc = FALSE;
char str[256];
char *str1;
str1 = str;
if (!pTag)
return 0;
*pTag = NULL;
for (i=0; i < 8; i++) {
j = 0;
while (ppcrp[j]) {
if (ppcrp[j]->busnum == bus && ppcrp[j]->funcnum == i) {
pcrp = ppcrp[j];
break;
}
j++;
}
if (!pcrp) return 0;
/*
* we check all functions here: since multifunc devices need
* to implement func 0 we catch all devices on the bus when
* i = 0
*/
if (pcrp->pci_header_type &0x80)
multifunc = TRUE;
j = 0;
while (ppcrp[j]) {
if (ppcrp[j]->busnum == bus && ppcrp[j]->funcnum == i
&& ppcrp[j]->devnum != pcrp->devnum) {
/* don't test subsys ID here. It might be set by POST
- however some cards might not have been POSTed */
if (ppcrp[j]->pci_device_vendor != pcrp->pci_device_vendor
|| ppcrp[j]->pci_header_type != pcrp->pci_header_type )
return 0;
else
multicard = TRUE;
}
j++;
}
if (!multifunc)
break;
}
if (!multicard)
return 0;
j = 0;
i = 0;
while (ppcrp[i]) {
if (ppcrp[i]->busnum == bus && ppcrp[i]->funcnum == func) {
str1 += sprintf(str1,"[%x:%x:%x]",ppcrp[i]->busnum,
ppcrp[i]->devnum,ppcrp[i]->funcnum);
*pTag = xnfrealloc(*pTag,sizeof(PCITAG) * (j + 1));
(*pTag)[j++] = pciTag(ppcrp[i]->busnum,
ppcrp[i]->devnum,ppcrp[i]->funcnum);
}
i++;
}
xf86MsgVerb(X_INFO,3,"Multi Device Card detected: %s\n",str);
return j;
}
static void
pciTagConvertRange2Host(PCITAG tag, resRange *pRange)
{
if (!(pRange->type & ResBus))
return;
switch(pRange->type & ResPhysMask) {
case ResMem:
switch(pRange->type & ResExtMask) {
case ResBlock:
pRange->rBegin = pciBusAddrToHostAddr(tag,PCI_MEM, pRange->rBegin);
pRange->rEnd = pciBusAddrToHostAddr(tag,PCI_MEM, pRange->rEnd);
break;
case ResSparse:
pRange->rBase = pciBusAddrToHostAddr(tag,PCI_MEM_SPARSE_BASE,
pRange->rBegin);
pRange->rMask = pciBusAddrToHostAddr(tag,PCI_MEM_SPARSE_MASK,
pRange->rEnd);
break;
}
break;
case ResIo:
switch(pRange->type & ResExtMask) {
case ResBlock:
pRange->rBegin = pciBusAddrToHostAddr(tag,PCI_IO, pRange->rBegin);
pRange->rEnd = pciBusAddrToHostAddr(tag,PCI_IO, pRange->rEnd);
break;
case ResSparse:
pRange->rBase = pciBusAddrToHostAddr(tag,PCI_IO_SPARSE_BASE
, pRange->rBegin);
pRange->rMask = pciBusAddrToHostAddr(tag,PCI_IO_SPARSE_MASK
, pRange->rEnd);
break;
}
break;
}
/* Set domain number */
pRange->type &= ~(ResDomain | ResBus);
pRange->type |= xf86GetPciDomain(tag) << 24;
}
static void
pciConvertListToHost(int bus, int dev, int func, resPtr list)
{
PCITAG tag = pciTag(bus,dev,func);
while (list) {
pciTagConvertRange2Host(tag, &list->val);
list = list->next;
}
}
static void
updateAccessInfoStatusControlInfo(PCITAG tag, CARD32 ctrl)
{
int i;
if (!xf86PciAccInfo)
return;
for (i = 0; xf86PciAccInfo[i] != NULL; i++) {
if (xf86PciAccInfo[i]->arg.tag == tag)
xf86PciAccInfo[i]->arg.ctrl = ctrl;
}
}
void
pciConvertRange2Host(int entityIndex, resRange *pRange)
{
PCITAG tag;
pciVideoPtr pvp;
pvp = xf86GetPciInfoForEntity(entityIndex);
if (!pvp) return;
tag = TAG(pvp);
pciTagConvertRange2Host(tag, pRange);
}
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