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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 <pciaccess.h>
#include "os.h"
#include "Pci.h"
#include "xf86.h"
#include "xf86Priv.h"
#include "dirent.h" /* DIR, FILE type definitions */
/* Bus-specific headers */
#include "xf86Bus.h"
#define XF86_OS_PRIVS
#include "xf86_OSproc.h"
/* Bus-specific globals */
Bool pciSlotClaimed = FALSE;
#define PCIINFOCLASSES(c) \
( (((c) & 0x00ff0000) == (PCI_CLASS_PREHISTORIC << 16)) \
|| (((c) & 0x00ff0000) == (PCI_CLASS_DISPLAY << 16)) \
|| ((((c) & 0x00ffff00) \
== ((PCI_CLASS_MULTIMEDIA << 16) | (PCI_SUBCLASS_MULTIMEDIA_VIDEO << 8)))) \
|| ((((c) & 0x00ffff00) \
== ((PCI_CLASS_PROCESSOR << 16) | (PCI_SUBCLASS_PROCESSOR_COPROC << 8)))) )
/*
* PCI classes that have messages printed always. The others are only
* have a message printed when the vendor/dev IDs are recognised.
*/
#define PCIALWAYSPRINTCLASSES(c) \
( (((c) & 0x00ffff00) \
== ((PCI_CLASS_PREHISTORIC << 16) | (PCI_SUBCLASS_PREHISTORIC_VGA << 8))) \
|| (((c) & 0x00ff0000) == (PCI_CLASS_DISPLAY << 16)) \
|| ((((c) & 0x00ffff00) \
== ((PCI_CLASS_MULTIMEDIA << 16) | (PCI_SUBCLASS_MULTIMEDIA_VIDEO << 8)))) )
#define IS_VGA(c) \
(((c) & 0x00ffff00) \
== ((PCI_CLASS_DISPLAY << 16) | (PCI_SUBCLASS_DISPLAY_VGA << 8)))
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);
}
/*
* xf86Bus.c interface
*/
void
xf86PciProbe(void)
{
int i = 0, k;
int num = 0;
struct pci_device *info;
struct pci_device_iterator *iter;
struct pci_device ** xf86PciVideoInfo = NULL;
if (!xf86scanpci()) {
xf86PciVideoInfo = NULL;
return;
}
iter = pci_slot_match_iterator_create(& xf86IsolateDevice);
while ((info = pci_device_next(iter)) != NULL) {
if (PCIINFOCLASSES(info->device_class)) {
num++;
xf86PciVideoInfo = xnfrealloc(xf86PciVideoInfo,
(sizeof(struct pci_device *)
* (num + 1)));
xf86PciVideoInfo[num] = NULL;
xf86PciVideoInfo[num - 1] = info;
pci_device_probe(info);
#ifdef HAVE_PCI_DEVICE_IS_BOOT_VGA
if (pci_device_is_boot_vga(info)) {
primaryBus.type = BUS_PCI;
primaryBus.id.pci = info;
}
#endif
info->user_data = 0;
}
}
free(iter);
/* If we haven't found a primary device try a different heuristic */
if (primaryBus.type == BUS_NONE && num) {
for (i = 0; i < num; i++) {
uint16_t command;
info = xf86PciVideoInfo[i];
pci_device_cfg_read_u16(info, & command, 4);
if ((command & PCI_CMD_MEM_ENABLE)
&& ((num == 1) || IS_VGA(info->device_class))) {
if (primaryBus.type == BUS_NONE) {
primaryBus.type = BUS_PCI;
primaryBus.id.pci = info;
} 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 = " ";
Bool memdone = FALSE, iodone = FALSE;
info = xf86PciVideoInfo[k];
vendorname = pci_device_get_vendor_name( info );
chipname = pci_device_get_device_name( info );
if ((!vendorname || !chipname) &&
!PCIALWAYSPRINTCLASSES(info->device_class))
continue;
if (xf86IsPrimaryPci(info))
prim = "*";
xf86Msg(X_PROBED, "PCI:%s(%u:%u:%u:%u) %04x:%04x:%04x:%04x ", prim,
info->domain, info->bus, info->dev, info->func,
info->vendor_id, info->device_id,
info->subvendor_id, info->subdevice_id);
if (vendorname)
xf86ErrorF("%s ", vendorname);
if (chipname)
xf86ErrorF("%s ", chipname);
xf86ErrorF("rev %d", info->revision);
for (i = 0; i < 6; i++) {
struct pci_mem_region * r = & info->regions[i];
if ( r->size && ! r->is_IO ) {
if (!memdone) {
xf86ErrorF(", Mem @ ");
memdone = TRUE;
} else
xf86ErrorF(", ");
xf86ErrorF("0x%08lx/%ld", (long)r->base_addr, (long)r->size);
}
}
for (i = 0; i < 6; i++) {
struct pci_mem_region * r = & info->regions[i];
if ( r->size && r->is_IO ) {
if (!iodone) {
xf86ErrorF(", I/O @ ");
iodone = TRUE;
} else
xf86ErrorF(", ");
xf86ErrorF("0x%08lx/%ld", (long)r->base_addr, (long)r->size);
}
}
if ( info->rom_size ) {
xf86ErrorF(", BIOS @ 0x\?\?\?\?\?\?\?\?/%ld", (long)info->rom_size);
}
xf86ErrorF("\n");
}
free(xf86PciVideoInfo);
}
/*
* If the slot requested is already in use, return -1.
* Otherwise, claim the slot for the screen requesting it.
*/
int
xf86ClaimPciSlot(struct pci_device * d, DriverPtr drvp,
int chipset, GDevPtr dev, Bool active)
{
EntityPtr p = NULL;
int num;
if (xf86CheckPciSlot(d)) {
num = xf86AllocateEntity();
p = xf86Entities[num];
p->driver = drvp;
p->chipset = chipset;
p->bus.type = BUS_PCI;
p->bus.id.pci = d;
p->active = active;
p->inUse = FALSE;
if (dev)
xf86AddDevToEntity(num, dev);
pciSlotClaimed = TRUE;
if (active) {
/* Map in this domain's I/O space */
p->domainIO = xf86MapLegacyIO(d);
}
return num;
} else
return -1;
}
/*
* Unclaim PCI slot, e.g. if probing failed, so that a different driver can claim.
*/
void
xf86UnclaimPciSlot(struct pci_device *d)
{
int i;
for (i = 0; i < xf86NumEntities; i++) {
const EntityPtr p = xf86Entities[i];
if ((p->bus.type == BUS_PCI) && (p->bus.id.pci == d)) {
/* Probably the slot should be deallocated? */
p->bus.type = BUS_NONE;
return;
}
}
}
/*
* Parse a BUS ID string, and return the PCI bus parameters if it was
* in the correct format for a PCI bus id.
*/
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) {
free(s);
return FALSE;
}
d = strpbrk(p, "@");
if (d != NULL) {
*(d++) = 0;
for (i = 0; d[i] != 0; i++) {
if (!isdigit(d[i])) {
free(s);
return FALSE;
}
}
}
for (i = 0; p[i] != 0; i++) {
if (!isdigit(p[i])) {
free(s);
return FALSE;
}
}
*bus = atoi(p);
if (d != NULL && *d != 0)
*bus += atoi(d) << 8;
p = strtok(NULL, ":");
if (p == NULL || *p == 0) {
free(s);
return FALSE;
}
for (i = 0; p[i] != 0; i++) {
if (!isdigit(p[i])) {
free(s);
return FALSE;
}
}
*device = atoi(p);
*func = 0;
p = strtok(NULL, ":");
if (p == NULL || *p == 0) {
free(s);
return TRUE;
}
for (i = 0; p[i] != 0; i++) {
if (!isdigit(p[i])) {
free(s);
return FALSE;
}
}
*func = atoi(p);
free(s);
return TRUE;
}
/*
* Compare a BUS ID string with a PCI bus id. Return TRUE if they match.
*/
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.
*/
Bool
xf86IsPrimaryPci(struct pci_device *pPci)
{
return ((primaryBus.type == BUS_PCI) && (pPci == primaryBus.id.pci));
}
/*
* xf86GetPciInfoForEntity() -- Get the pciVideoRec of entity.
*/
struct pci_device *
xf86GetPciInfoForEntity(int entityIndex)
{
EntityPtr p;
if (entityIndex >= xf86NumEntities)
return NULL;
p = xf86Entities[entityIndex];
return (p->bus.type == BUS_PCI) ? p->bus.id.pci : NULL;
}
/*
* xf86CheckPciMemBase() checks that the memory base value matches one of the
* PCI base address register values for the given PCI device.
*/
Bool
xf86CheckPciMemBase( struct pci_device * pPci, memType base )
{
int i;
for (i = 0; i < 6; i++)
if (base == pPci->regions[i].base_addr)
return TRUE;
return FALSE;
}
/*
* Check if the slot requested is free. If it is already in use, return FALSE.
*/
Bool
xf86CheckPciSlot(const struct pci_device *d)
{
int i;
for (i = 0; i < xf86NumEntities; i++) {
const EntityPtr p = xf86Entities[i];
if ((p->bus.type == BUS_PCI) && (p->bus.id.pci == d)) {
return FALSE;
}
}
return TRUE;
}
#define END_OF_MATCHES(m) \
(((m).vendor_id == 0) && ((m).device_id == 0) && ((m).subvendor_id == 0))
Bool
xf86PciAddMatchingDev(DriverPtr drvp)
{
const struct pci_id_match * const devices = drvp->supported_devices;
int j;
struct pci_device *pPci;
struct pci_device_iterator *iter;
int numFound = 0;
iter = pci_id_match_iterator_create(NULL);
while ((pPci = pci_device_next(iter)) != NULL) {
/* Determine if this device is supported by the driver. If it is,
* add it to the list of devices to configure.
*/
for (j = 0 ; ! END_OF_MATCHES(devices[j]) ; j++) {
if ( PCI_ID_COMPARE( devices[j].vendor_id, pPci->vendor_id )
&& PCI_ID_COMPARE( devices[j].device_id, pPci->device_id )
&& ((devices[j].device_class_mask & pPci->device_class)
== devices[j].device_class) ) {
if (xf86CheckPciSlot(pPci)) {
GDevPtr pGDev = xf86AddBusDeviceToConfigure(
drvp->driverName, BUS_PCI, pPci, -1);
if (pGDev != NULL) {
/* After configure pass 1, chipID and chipRev are
* treated as over-rides, so clobber them here.
*/
pGDev->chipID = -1;
pGDev->chipRev = -1;
}
numFound++;
}
break;
}
}
}
pci_iterator_destroy(iter);
return numFound != 0;
}
Bool
xf86PciProbeDev(DriverPtr drvp)
{
int i, j;
struct pci_device * pPci;
Bool foundScreen = FALSE;
const struct pci_id_match * const devices = drvp->supported_devices;
GDevPtr *devList;
const unsigned numDevs = xf86MatchDevice(drvp->driverName, & devList);
for ( i = 0 ; i < numDevs ; i++ ) {
struct pci_device_iterator *iter;
unsigned device_id;
/* Find the pciVideoRec associated with this device section.
*/
iter = pci_id_match_iterator_create(NULL);
while ((pPci = pci_device_next(iter)) != NULL) {
if (devList[i]->busID && *devList[i]->busID) {
if (xf86ComparePciBusString(devList[i]->busID,
((pPci->domain << 8)
| pPci->bus),
pPci->dev,
pPci->func)) {
break;
}
}
else if (xf86IsPrimaryPci(pPci)) {
break;
}
}
pci_iterator_destroy(iter);
if (pPci == NULL) {
continue;
}
device_id = (devList[i]->chipID > 0)
? devList[i]->chipID : pPci->device_id;
/* Once the pciVideoRec is found, determine if the device is supported
* by the driver. If it is, probe it!
*/
for ( j = 0 ; ! END_OF_MATCHES( devices[j] ) ; j++ ) {
if ( PCI_ID_COMPARE( devices[j].vendor_id, pPci->vendor_id )
&& PCI_ID_COMPARE( devices[j].device_id, device_id )
&& ((devices[j].device_class_mask & pPci->device_class)
== devices[j].device_class) ) {
int entry;
/* Allow the same entity to be used more than once for
* devices with multiple screens per entity. This assumes
* implicitly that there will be a screen == 0 instance.
*
* FIXME Need to make sure that two different drivers don't
* FIXME claim the same screen > 0 instance.
*/
if ((devList[i]->screen == 0) && !xf86CheckPciSlot(pPci))
continue;
DebugF("%s: card at %d:%d:%d is claimed by a Device section\n",
drvp->driverName, pPci->bus, pPci->dev, pPci->func);
/* Allocate an entry in the lists to be returned */
entry = xf86ClaimPciSlot(pPci, drvp, device_id,
devList[i], devList[i]->active);
if ((entry == -1) && (devList[i]->screen > 0)) {
unsigned k;
for (k = 0; k < xf86NumEntities; k++ ) {
EntityPtr pEnt = xf86Entities[k];
if (pEnt->bus.type != BUS_PCI)
continue;
if (pEnt->bus.id.pci == pPci) {
entry = k;
xf86AddDevToEntity(k, devList[i]);
break;
}
}
}
if (entry != -1) {
if ((*drvp->PciProbe)(drvp, entry, pPci,
devices[j].match_data)) {
foundScreen = TRUE;
} else
xf86UnclaimPciSlot(pPci);
}
break;
}
}
}
free(devList);
return foundScreen;
}
void
xf86PciIsolateDevice(char *argument)
{
int bus, device, func;
if (sscanf(argument, "PCI:%d:%d:%d", &bus, &device, &func) == 3) {
xf86IsolateDevice.domain = PCI_DOM_FROM_BUS(bus);
xf86IsolateDevice.bus = PCI_BUS_NO_DOMAIN(bus);
xf86IsolateDevice.dev = device;
xf86IsolateDevice.func = func;
} else
FatalError("Invalid isolated device specification\n");
}
static Bool
pciDeviceHasBars(struct pci_device *pci)
{
int i;
for (i = 0; i < 6; i++)
if (pci->regions[i].size)
return TRUE;
if (pci->rom_size)
return TRUE;
return FALSE;
}
struct Inst {
struct pci_device * pci;
GDevPtr dev;
Bool foundHW; /* PCIid in list of supported chipsets */
Bool claimed; /* BusID matches with a device section */
int chip;
int screen;
};
/**
* Find set of unclaimed devices matching a given vendor ID.
*
* Used by drivers to find as yet unclaimed devices matching the specified
* vendor ID.
*
* \param driverName Name of the driver. This is used to find Device
* sections in the config file.
* \param vendorID PCI vendor ID of associated devices. If zero, then
* the true vendor ID must be encoded in the \c PCIid
* fields of the \c PCIchipsets entries.
* \param chipsets Symbol table used to associate chipset names with
* PCI IDs.
* \param devList List of Device sections parsed from the config file.
* \param numDevs Number of entries in \c devList.
* \param drvp Pointer the driver's control structure.
* \param foundEntities Returned list of entity indicies associated with the
* driver.
*
* \returns
* The number of elements in returned in \c foundEntities on success or zero
* on failure.
*
* \todo
* This function does a bit more than short description says. Fill in some
* more of the details of its operation.
*
* \todo
* The \c driverName parameter is redundant. It is the same as
* \c DriverRec::driverName. In a future version of this function, remove
* that parameter.
*/
int
xf86MatchPciInstances(const char *driverName, int vendorID,
SymTabPtr chipsets, PciChipsets *PCIchipsets,
GDevPtr *devList, int numDevs, DriverPtr drvp,
int **foundEntities)
{
int i,j;
struct pci_device * pPci;
struct pci_device_iterator *iter;
struct Inst *instances = NULL;
int numClaimedInstances = 0;
int allocatedInstances = 0;
int numFound = 0;
SymTabRec *c;
PciChipsets *id;
int *retEntities = NULL;
*foundEntities = NULL;
/* Each PCI device will contribute at least one entry. Each device
* section can contribute at most one entry. The sum of the two is
* guaranteed to be larger than the maximum possible number of entries.
* Do this calculation and memory allocation once now to eliminate the
* need for realloc calls inside the loop.
*/
if (!(xf86DoConfigure && xf86DoConfigurePass1)) {
unsigned max_entries = numDevs;
iter = pci_slot_match_iterator_create(NULL);
while ((pPci = pci_device_next(iter)) != NULL) {
max_entries++;
}
pci_iterator_destroy(iter);
instances = xnfalloc(max_entries * sizeof(struct Inst));
}
iter = pci_slot_match_iterator_create(NULL);
while ((pPci = pci_device_next(iter)) != NULL) {
unsigned device_class = pPci->device_class;
Bool foundVendor = FALSE;
/* Convert the pre-PCI 2.0 device class for a VGA adapter to the
* 2.0 version of the same class.
*/
if ( device_class == 0x00000101 ) {
device_class = 0x00030000;
}
/* Find PCI devices that match the given vendor ID. The vendor ID is
* either specified explicitly as a parameter to the function or
* implicitly encoded in the high bits of id->PCIid.
*
* The first device with a matching vendor is recorded, even if the
* device ID doesn't match. This is done because the Device section
* in the xorg.conf file can over-ride the device ID. A matching PCI
* ID might not be found now, but after the device ID over-ride is
* applied there /might/ be a match.
*/
for (id = PCIchipsets; id->PCIid != -1; id++) {
const unsigned vendor_id = ((id->PCIid & 0xFFFF0000) >> 16)
| vendorID;
const unsigned device_id = (id->PCIid & 0x0000FFFF);
const unsigned match_class = 0x00030000 | id->PCIid;
if ((vendor_id == pPci->vendor_id)
|| ((vendorID == PCI_VENDOR_GENERIC) && (match_class == device_class))) {
if (!foundVendor && (instances != NULL)) {
++allocatedInstances;
instances[allocatedInstances - 1].pci = pPci;
instances[allocatedInstances - 1].dev = NULL;
instances[allocatedInstances - 1].claimed = FALSE;
instances[allocatedInstances - 1].foundHW = FALSE;
instances[allocatedInstances - 1].screen = 0;
}
foundVendor = TRUE;
if ( (device_id == pPci->device_id)
|| ((vendorID == PCI_VENDOR_GENERIC)
&& (match_class == device_class)) ) {
if ( instances != NULL ) {
instances[allocatedInstances - 1].foundHW = TRUE;
instances[allocatedInstances - 1].chip = id->numChipset;
}
if ( xf86DoConfigure && xf86DoConfigurePass1 ) {
if (xf86CheckPciSlot(pPci)) {
GDevPtr pGDev =
xf86AddBusDeviceToConfigure(drvp->driverName,
BUS_PCI, pPci, -1);
if (pGDev) {
/* After configure pass 1, chipID and chipRev
* are treated as over-rides, so clobber them
* here.
*/
pGDev->chipID = -1;
pGDev->chipRev = -1;
}
numFound++;
}
}
else {
numFound++;
}
break;
}
}
}
}
pci_iterator_destroy(iter);
/* In "probe only" or "configure" mode (signaled by instances being NULL),
* our work is done. Return the number of detected devices.
*/
if ( instances == NULL ) {
return numFound;
}
/*
* This may be debatable, but if no PCI devices with a matching vendor
* type is found, return zero now. It is probably not desirable to
* allow the config file to override this.
*/
if (allocatedInstances <= 0) {
free(instances);
return 0;
}
DebugF("%s instances found: %d\n", driverName, allocatedInstances);
/*
* Check for devices that need duplicated instances. This is required
* when there is more than one screen per entity.
*
* XXX This currently doesn't work for cases where the BusID isn't
* specified explicitly in the config file.
*/
for (j = 0; j < numDevs; j++) {
if (devList[j]->screen > 0 && devList[j]->busID
&& *devList[j]->busID) {
for (i = 0; i < allocatedInstances; i++) {
pPci = instances[i].pci;
if (xf86ComparePciBusString(devList[j]->busID,
PCI_MAKE_BUS( pPci->domain, pPci->bus ),
pPci->dev,
pPci->func)) {
allocatedInstances++;
instances[allocatedInstances - 1] = instances[i];
instances[allocatedInstances - 1].screen = devList[j]->screen;
numFound++;
break;
}
}
}
}
for (i = 0; i < allocatedInstances; i++) {
GDevPtr dev = NULL;
GDevPtr devBus = NULL;
pPci = instances[i].pci;
for (j = 0; j < numDevs; j++) {
if (devList[j]->busID && *devList[j]->busID) {
if (xf86ComparePciBusString(devList[j]->busID,
PCI_MAKE_BUS( pPci->domain, pPci->bus ),
pPci->dev,
pPci->func) &&
devList[j]->screen == instances[i].screen) {
if (devBus)
xf86MsgVerb(X_WARNING,0,
"%s: More than one matching Device section for "
"instances\n\t(BusID: %s) found: %s\n",
driverName, devList[j]->busID,
devList[j]->identifier);
else
devBus = devList[j];
}
} else {
/*
* if device section without BusID is found
* only assign to it to the primary device.
*/
if (xf86IsPrimaryPci(pPci)) {
xf86Msg(X_PROBED, "Assigning device section with no busID"
" to primary device\n");
if (dev || devBus)
xf86MsgVerb(X_WARNING, 0,
"%s: More than one matching Device section "
"found: %s\n", driverName, devList[j]->identifier);
else
dev = devList[j];
}
}
}
if (devBus) dev = devBus; /* busID preferred */
if (!dev) {
if (xf86CheckPciSlot(pPci) && pciDeviceHasBars(pPci)) {
xf86MsgVerb(X_WARNING, 0, "%s: No matching Device section "
"for instance (BusID PCI:%u@%u:%u:%u) found\n",
driverName, pPci->domain, pPci->bus, pPci->dev,
pPci->func);
}
} else {
numClaimedInstances++;
instances[i].claimed = TRUE;
instances[i].dev = dev;
}
}
DebugF("%s instances found: %d\n", driverName, numClaimedInstances);
/*
* Now check that a chipset or chipID override in the device section
* is valid. Chipset has precedence over chipID.
* If chipset is not valid ignore BusSlot completely.
*/
for (i = 0; i < allocatedInstances && numClaimedInstances > 0; i++) {
MessageType from = X_PROBED;
if (!instances[i].claimed) {
continue;
}
if (instances[i].dev->chipset) {
for (c = chipsets; c->token >= 0; c++) {
if (xf86NameCmp(c->name, instances[i].dev->chipset) == 0)
break;
}
if (c->token == -1) {
instances[i].claimed = FALSE;
numClaimedInstances--;
xf86MsgVerb(X_WARNING, 0, "%s: Chipset \"%s\" in Device "
"section \"%s\" isn't valid for this driver\n",
driverName, instances[i].dev->chipset,
instances[i].dev->identifier);
} else {
instances[i].chip = c->token;
for (id = PCIchipsets; id->numChipset >= 0; id++) {
if (id->numChipset == instances[i].chip)
break;
}
if(id->numChipset >=0){
xf86Msg(X_CONFIG,"Chipset override: %s\n",
instances[i].dev->chipset);
from = X_CONFIG;
} else {
instances[i].claimed = FALSE;
numClaimedInstances--;
xf86MsgVerb(X_WARNING, 0, "%s: Chipset \"%s\" in Device "
"section \"%s\" isn't a valid PCI chipset\n",
driverName, instances[i].dev->chipset,
instances[i].dev->identifier);
}
}
} else if (instances[i].dev->chipID > 0) {
for (id = PCIchipsets; id->numChipset >= 0; id++) {
if (id->PCIid == instances[i].dev->chipID)
break;
}
if (id->numChipset == -1) {
instances[i].claimed = FALSE;
numClaimedInstances--;
xf86MsgVerb(X_WARNING, 0, "%s: ChipID 0x%04X in Device "
"section \"%s\" isn't valid for this driver\n",
driverName, instances[i].dev->chipID,
instances[i].dev->identifier);
} else {
instances[i].chip = id->numChipset;
xf86Msg( X_CONFIG,"ChipID override: 0x%04X\n",
instances[i].dev->chipID);
from = X_CONFIG;
}
} else if (!instances[i].foundHW) {
/*
* This means that there was no override and the PCI chipType
* doesn't match one that is supported
*/
instances[i].claimed = FALSE;
numClaimedInstances--;
}
if (instances[i].claimed == TRUE){
for (c = chipsets; c->token >= 0; c++) {
if (c->token == instances[i].chip)
break;
}
xf86Msg(from,"Chipset %s found\n",
c->name);
}
}
/*
* Of the claimed instances, check that another driver hasn't already
* claimed its slot.
*/
numFound = 0;
for (i = 0; i < allocatedInstances && numClaimedInstances > 0; i++) {
if (!instances[i].claimed)
continue;
pPci = instances[i].pci;
/*
* Allow the same entity to be used more than once for devices with
* multiple screens per entity. This assumes implicitly that there
* will be a screen == 0 instance.
*
* XXX Need to make sure that two different drivers don't claim
* the same screen > 0 instance.
*/
if (instances[i].screen == 0 && !xf86CheckPciSlot( pPci ))
continue;
DebugF("%s: card at %d:%d:%d is claimed by a Device section\n",
driverName, pPci->bus, pPci->dev, pPci->func);
/* Allocate an entry in the lists to be returned */
numFound++;
retEntities = xnfrealloc(retEntities, numFound * sizeof(int));
retEntities[numFound - 1] = xf86ClaimPciSlot( pPci, drvp,
instances[i].chip,
instances[i].dev,
instances[i].dev->active);
if (retEntities[numFound - 1] == -1 && instances[i].screen > 0) {
for (j = 0; j < xf86NumEntities; j++) {
EntityPtr pEnt = xf86Entities[j];
if (pEnt->bus.type != BUS_PCI)
continue;
if (pEnt->bus.id.pci == pPci) {
retEntities[numFound - 1] = j;
xf86AddDevToEntity(j, instances[i].dev);
break;
}
}
}
}
free(instances);
if (numFound > 0) {
*foundEntities = retEntities;
}
return numFound;
}
/*
* xf86ConfigPciEntityInactive() -- This function can be used
* to configure an inactive entity as well as to reconfigure an
* previously active entity inactive. If the entity has been
* assigned to a screen before it will be removed. If p_chip is
* non-NULL all static resources listed there will be registered.
*/
static void
xf86ConfigPciEntityInactive(EntityInfoPtr pEnt, PciChipsets *p_chip,
EntityProc init, EntityProc enter,
EntityProc leave, pointer private)
{
ScrnInfoPtr pScrn;
if ((pScrn = xf86FindScreenForEntity(pEnt->index)))
xf86RemoveEntityFromScreen(pScrn,pEnt->index);
/* shared resources are only needed when entity is active: remove */
xf86SetEntityFuncs(pEnt->index,init,enter,leave,private);
}
ScrnInfoPtr
xf86ConfigPciEntity(ScrnInfoPtr pScrn, int scrnFlag, int entityIndex,
PciChipsets *p_chip, void *dummy, EntityProc init,
EntityProc enter, EntityProc leave, pointer private)
{
EntityInfoPtr pEnt = xf86GetEntityInfo(entityIndex);
if (!pEnt) return pScrn;
if (!(pEnt->location.type == BUS_PCI)
|| !xf86GetPciInfoForEntity(entityIndex)) {
free(pEnt);
return pScrn;
}
if (!pEnt->active) {
xf86ConfigPciEntityInactive(pEnt, p_chip, init, enter,
leave, private);
free(pEnt);
return pScrn;
}
if (!pScrn)
pScrn = xf86AllocateScreen(pEnt->driver,scrnFlag);
if (xf86IsEntitySharable(entityIndex)) {
xf86SetEntityShared(entityIndex);
}
xf86AddEntityToScreen(pScrn,entityIndex);
if (xf86IsEntityShared(entityIndex)) {
return pScrn;
}
free(pEnt);
xf86SetEntityFuncs(entityIndex,init,enter,leave,private);
return pScrn;
}
/*
* OBSOLETE ! xf86ConfigActivePciEntity() is an obsolete function.
* It is likely to be removed. Don't use!
*/
Bool
xf86ConfigActivePciEntity(ScrnInfoPtr pScrn, int entityIndex,
PciChipsets *p_chip, void *dummy, EntityProc init,
EntityProc enter, EntityProc leave, pointer private)
{
EntityInfoPtr pEnt = xf86GetEntityInfo(entityIndex);
if (!pEnt) return FALSE;
if (!pEnt->active || !(pEnt->location.type == BUS_PCI)) {
free(pEnt);
return FALSE;
}
xf86AddEntityToScreen(pScrn,entityIndex);
free(pEnt);
if (!xf86SetEntityFuncs(entityIndex,init,enter,leave,private))
return FALSE;
return TRUE;
}
static int
videoPtrToDriverList(struct pci_device *dev,
char *returnList[], int returnListMax)
{
int i;
/* Add more entries here if we ever return more than 4 drivers for
any device */
char *driverList[5] = { NULL, NULL, NULL, NULL, NULL };
switch (dev->vendor_id)
{
/* AMD Geode LX */
case 0x1022:
if (dev->device_id == 0x2081)
driverList[0] = "geode";
break;
/* older Geode products acquired by AMD still carry an NSC vendor_id */
case 0x100b:
if (dev->device_id == 0x0030) {
/* NSC Geode GX2 specifically */
driverList[0] = "geode";
/* GX2 support started its life in the NSC tree and was later
forked by AMD for GEODE so we keep it as a backup */
driverList[1] = "nsc";
} else
/* other NSC variant e.g. 0x0104 (SC1400), 0x0504 (SCx200) */
driverList[0] = "nsc";
break;
/* Cyrix Geode GX1 */
case 0x1078:
if (dev->device_id == 0x0104)
driverList[0] = "cyrix";
break;
case 0x1142: driverList[0] = "apm"; break;
case 0xedd8: driverList[0] = "ark"; break;
case 0x1a03: driverList[0] = "ast"; break;
case 0x1002: driverList[0] = "ati"; break;
case 0x102c: driverList[0] = "chips"; break;
case 0x1013: driverList[0] = "cirrus"; break;
case 0x3d3d: driverList[0] = "glint"; break;
case 0x105d: driverList[0] = "i128"; break;
case 0x8086:
if ((dev->device_id == 0x00d1) || (dev->device_id == 0x7800)) {
driverList[0] = "i740";
} else if (dev->device_id == 0x8108) {
break; /* "hooray" for poulsbo */
} else {
driverList[0] = "intel";
}
break;
case 0x102b: driverList[0] = "mga"; break;
case 0x10c8: driverList[0] = "neomagic"; break;
case 0x10de: case 0x12d2: driverList[0] = "nv"; break;
case 0x1106: driverList[0] = "openchrome"; break;
case 0x1b36: driverList[0] = "qxl"; break;
case 0x1163: driverList[0] = "rendition"; break;
case 0x5333:
switch (dev->device_id)
{
case 0x88d0: case 0x88d1: case 0x88f0: case 0x8811:
case 0x8812: case 0x8814: case 0x8901:
driverList[0] = "s3"; break;
case 0x5631: case 0x883d: case 0x8a01: case 0x8a10:
case 0x8c01: case 0x8c03: case 0x8904: case 0x8a13:
driverList[0] = "s3virge"; break;
default:
driverList[0] = "savage"; break;
}
break;
case 0x1039: driverList[0] = "sis"; break;
case 0x126f: driverList[0] = "siliconmotion"; break;
case 0x121a:
if (dev->device_id < 0x0003)
driverList[0] = "voodoo";
else
driverList[0] = "tdfx";
break;
case 0x1011: driverList[0] = "tga"; break;
case 0x1023: driverList[0] = "trident"; break;
case 0x100c: driverList[0] = "tseng"; break;
case 0x80ee: driverList[0] = "vboxvideo"; break;
case 0x15ad: driverList[0] = "vmware"; break;
case 0x18ca:
if (dev->device_id == 0x47)
driverList[0] = "xgixp";
else
driverList[0] = "xgi";
break;
default: break;
}
for (i = 0; (i < returnListMax) && (driverList[i] != NULL); i++) {
returnList[i] = xnfstrdup(driverList[i]);
}
return i; /* Number of entries added */
}
static int
xchomp(char *line)
{
size_t len = 0;
if (!line) {
return 1;
}
len = strlen(line);
if (line[len - 1] == '\n' && len > 0) {
line[len - 1] = '\0';
}
return 0;
}
#ifdef __linux__
/* This function is used to provide a workaround for binary drivers that
* don't export their PCI ID's properly. If distros don't end up using this
* feature it can and should be removed because the symbol-based resolution
* scheme should be the primary one */
static void
matchDriverFromFiles (char** matches, uint16_t match_vendor, uint16_t match_chip)
{
DIR *idsdir;
FILE *fp;
struct dirent *direntry;
char *line = NULL;
size_t len;
ssize_t read;
char path_name[256], vendor_str[5], chip_str[5];
uint16_t vendor, chip;
int i, j;
idsdir = opendir(PCI_TXT_IDS_PATH);
if (!idsdir)
return;
xf86Msg(X_INFO, "Scanning %s directory for additional PCI ID's supported by the drivers\n", PCI_TXT_IDS_PATH);
direntry = readdir(idsdir);
/* Read the directory */
while (direntry) {
if (direntry->d_name[0] == '.') {
direntry = readdir(idsdir);
continue;
}
len = strlen(direntry->d_name);
/* A tiny bit of sanity checking. We should probably do better */
if (strncmp(&(direntry->d_name[len-4]), ".ids", 4) == 0) {
/* We need the full path name to open the file */
strncpy(path_name, PCI_TXT_IDS_PATH, 256);
strncat(path_name, "/", 1);
strncat(path_name, direntry->d_name, (256 - strlen(path_name) - 1));
fp = fopen(path_name, "r");
if (fp == NULL) {
xf86Msg(X_ERROR, "Could not open %s for reading. Exiting.\n", path_name);
goto end;
}
/* Read the file */
#ifdef __GLIBC__
while ((read = getline(&line, &len, fp)) != -1) {
#else
while ((line = fgetln(fp, &len)) != (char *)NULL) {
#endif /* __GLIBC __ */
xchomp(line);
if (isdigit(line[0])) {
strncpy(vendor_str, line, 4);
vendor_str[4] = '\0';
vendor = (int)strtol(vendor_str, NULL, 16);
if ((strlen(&line[4])) == 0) {
chip_str[0] = '\0';
chip = -1;
} else {
/* Handle trailing whitespace */
if (isspace(line[4])) {
chip_str[0] = '\0';
chip = -1;
} else {
/* Ok, it's a real ID */
strncpy(chip_str, &line[4], 4);
chip_str[4] = '\0';
chip = (int)strtol(chip_str, NULL, 16);
}
}
if (vendor == match_vendor && chip == match_chip ) {
i = 0;
while (matches[i]) {
i++;
}
matches[i] = (char*)malloc(sizeof(char) * strlen(direntry->d_name) - 3);
if (!matches[i]) {
xf86Msg(X_ERROR, "Could not allocate space for the module name. Exiting.\n");
goto end;
}
/* hack off the .ids suffix. This should guard
* against other problems, but it will end up
* taking off anything after the first '.' */
for (j = 0; j < (strlen(direntry->d_name) - 3) ; j++) {
if (direntry->d_name[j] == '.') {
matches[i][j] = '\0';
break;
} else {
matches[i][j] = direntry->d_name[j];
}
}
xf86Msg(X_INFO, "Matched %s from file name %s\n", matches[i], direntry->d_name);
}
} else {
/* TODO Handle driver overrides here */
}
}
fclose(fp);
}
direntry = readdir(idsdir);
}
end:
free(line);
closedir(idsdir);
}
#endif /* __linux__ */
/**
* @return The numbers of found devices that match with the current system
* drivers.
*/
int
xf86PciMatchDriver(char* matches[], int nmatches) {
int i;
struct pci_device * info = NULL;
struct pci_device_iterator *iter;
/* Find the primary device, and get some information about it. */
iter = pci_slot_match_iterator_create(NULL);
while ((info = pci_device_next(iter)) != NULL) {
if (xf86IsPrimaryPci(info)) {
break;
}
}
pci_iterator_destroy(iter);
if (!info) {
ErrorF("Primary device is not PCI\n");
}
#ifdef __linux__
else {
matchDriverFromFiles(matches, info->vendor_id, info->device_id);
}
#endif /* __linux__ */
for (i = 0; (i < nmatches) && (matches[i]); i++) {
/* find end of matches list */
}
if ((info != NULL) && (i < nmatches)) {
i += videoPtrToDriverList(info, &(matches[i]), nmatches - i);
}
return i;
}
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