frederik
/
xserver
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
xserver/hw/xfree86/common/xf86Bus.c

674 lines
18 KiB
C
Raw Blame History

/*
* 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 "config/hotplug_priv.h"
#include "os.h"
#include "xf86.h"
#include "xf86Priv.h"
/* Bus-specific headers */
#include "xf86Bus.h"
#include "xf86_OSproc.h"
#ifdef XSERVER_LIBPCIACCESS
#include "xf86VGAarbiter_priv.h"
#endif
/* Entity data */
EntityPtr *xf86Entities = NULL; /* Bus slots claimed by drivers */
int xf86NumEntities = 0;
static int xf86EntityPrivateCount = 0;
BusRec primaryBus = { BUS_NONE, {0} };
/**
* Call the driver's correct probe function.
*
* If the driver implements the \c DriverRec::PciProbe entry-point and an
* appropriate PCI device (with matching Device section in the xorg.conf file)
* is found, it is called. If \c DriverRec::PciProbe or no devices can be
* successfully probed with it (e.g., only non-PCI devices are available),
* the driver's \c DriverRec::Probe function is called.
*
* \param drv Driver to probe
*
* \return
* If a device can be successfully probed by the driver, \c TRUE is
* returned. Otherwise, \c FALSE is returned.
*/
Bool
xf86CallDriverProbe(DriverPtr drv, Bool detect_only)
{
Bool foundScreen = FALSE;
#ifdef XSERVER_PLATFORM_BUS
/* xf86platformBus.c does not support Xorg -configure */
if (!xf86DoConfigure && drv->platformProbe != NULL) {
foundScreen = xf86platformProbeDev(drv);
}
#endif
#ifdef XSERVER_LIBPCIACCESS
if (!foundScreen && (drv->PciProbe != NULL)) {
if (xf86DoConfigure && xf86DoConfigurePass1) {
assert(detect_only);
foundScreen = xf86PciAddMatchingDev(drv);
}
else {
assert(!detect_only);
foundScreen = xf86PciProbeDev(drv);
}
}
#endif
if (!foundScreen && (drv->Probe != NULL)) {
LogMessageVerb(X_WARNING, 1, "Falling back to old probe method for %s\n",
drv->driverName);
foundScreen = (*drv->Probe) (drv, (detect_only) ? PROBE_DETECT
: PROBE_DEFAULT);
}
return foundScreen;
}
static screenLayoutPtr
xf86BusConfigMatch(ScrnInfoPtr scrnInfo, Bool is_gpu) {
screenLayoutPtr layout;
int i, j;
for (layout = xf86ConfigLayout.screens; layout->screen != NULL;
layout++) {
for (i = 0; i < scrnInfo->numEntities; i++) {
GDevPtr dev =
xf86GetDevFromEntity(scrnInfo->entityList[i],
scrnInfo->entityInstanceList[i]);
if (is_gpu) {
for (j = 0; j < layout->screen->num_gpu_devices; j++) {
if (dev == layout->screen->gpu_devices[j]) {
/* A match has been found */
return layout;
}
}
} else {
if (dev == layout->screen->device) {
/* A match has been found */
return layout;
}
}
}
}
return NULL;
}
/**
* @return TRUE if all buses are configured and set up correctly and FALSE
* otherwise.
*/
Bool
xf86BusConfig(void)
{
screenLayoutPtr layout;
int i;
/*
* 3 step probe to (hopefully) ensure that we always find at least 1
* (non GPU) screen:
*
* 1. Call each drivers probe function normally,
* Each successful probe will result in an extra entry added to the
* xf86Screens[] list for each instance of the hardware found.
*/
for (i = 0; i < xf86NumDrivers; i++) {
xf86CallDriverProbe(xf86DriverList[i], FALSE);
}
/*
* 2. If no Screens were found, call each drivers probe function with
* ignorePrimary = TRUE, to ensure that we do actually get a
* Screen if there is at least one supported video card.
*/
if (xf86NumScreens == 0) {
xf86ProbeIgnorePrimary = TRUE;
for (i = 0; i < xf86NumDrivers && xf86NumScreens == 0; i++) {
xf86CallDriverProbe(xf86DriverList[i], FALSE);
}
xf86ProbeIgnorePrimary = FALSE;
}
/*
* 3. Call xf86platformAddGPUDevices() to add any additional video cards as
* GPUScreens (GPUScreens are only supported by platformBus drivers).
*/
for (i = 0; i < xf86NumDrivers; i++) {
xf86platformAddGPUDevices(xf86DriverList[i]);
}
/* If nothing was detected, return now */
if (xf86NumScreens == 0) {
LogMessageVerb(X_ERROR, 1, "No devices detected.\n");
return FALSE;
}
xf86VGAarbiterInit();
/*
* Match up the screens found by the probes against those specified
* in the config file. Remove the ones that won't be used. Sort
* them in the order specified.
*
* What is the best way to do this?
*
* For now, go through the screens allocated by the probes, and
* look for screen config entry which refers to the same device
* section as picked out by the probe.
*
*/
for (i = 0; i < xf86NumScreens; i++) {
layout = xf86BusConfigMatch(xf86Screens[i], FALSE);
if (layout && layout->screen)
xf86Screens[i]->confScreen = layout->screen;
else {
/* No match found */
LogMessageVerb(X_ERROR, 1,
"Screen %d deleted because of no matching config section.\n",
i);
xf86DeleteScreen(xf86Screens[i--]);
}
}
/* bind GPU conf screen to the configured protocol screen, or 0 if not configured */
for (i = 0; i < xf86NumGPUScreens; i++) {
layout = xf86BusConfigMatch(xf86GPUScreens[i], TRUE);
int scrnum = (layout && layout->screen) ? layout->screen->screennum : 0;
xf86GPUScreens[i]->confScreen = xf86Screens[scrnum]->confScreen;
}
/* If no screens left, return now. */
if (xf86NumScreens == 0) {
LogMessageVerb(X_ERROR, 1,
"Device(s) detected, but none match those in the config file.\n");
return FALSE;
}
return TRUE;
}
/*
* Call the bus probes relevant to the architecture.
*
* The only one available so far is for PCI and SBUS.
*/
void
xf86BusProbe(void)
{
#ifdef XSERVER_PLATFORM_BUS
xf86platformProbe();
if (ServerIsNotSeat0() && xf86_num_platform_devices > 0)
return;
#endif
#ifdef XSERVER_LIBPCIACCESS
xf86PciProbe();
#endif
#if (defined(__sparc__) || defined(__sparc)) && !defined(__OpenBSD__)
xf86SbusProbe();
#endif
#ifdef XSERVER_PLATFORM_BUS
xf86platformPrimary();
#endif
}
/*
* Determine what bus type the busID string represents. The start of the
* bus-dependent part of the string is returned as retID.
*/
BusType
StringToBusType(const char *busID, const char **retID)
{
char *p, *s;
BusType ret = BUS_NONE;
/* If no type field, Default to PCI */
if (isdigit((unsigned char)busID[0])) {
if (retID)
*retID = busID;
return BUS_PCI;
}
s = Xstrdup(busID);
p = strtok(s, ":");
if (p == NULL || *p == 0) {
free(s);
return BUS_NONE;
}
if (!xf86NameCmp(p, "pci") || !xf86NameCmp(p, "agp"))
ret = BUS_PCI;
if (!xf86NameCmp(p, "sbus"))
ret = BUS_SBUS;
if (!xf86NameCmp(p, "platform"))
ret = BUS_PLATFORM;
if (!xf86NameCmp(p, "usb"))
ret = BUS_USB;
if (ret != BUS_NONE)
if (retID)
*retID = busID + strlen(p) + 1;
free(s);
return ret;
}
int
xf86AllocateEntity(void)
{
xf86NumEntities++;
xf86Entities = XNFreallocarray(xf86Entities,
xf86NumEntities, sizeof(EntityPtr));
xf86Entities[xf86NumEntities - 1] = XNFcallocarray(1, sizeof(EntityRec));
xf86Entities[xf86NumEntities - 1]->entityPrivates =
XNFcallocarray(xf86EntityPrivateCount, sizeof(DevUnion));
return xf86NumEntities - 1;
}
Bool
xf86IsEntityPrimary(int entityIndex)
{
EntityPtr pEnt = xf86Entities[entityIndex];
#ifdef XSERVER_LIBPCIACCESS
if (primaryBus.type == BUS_PLATFORM && pEnt->bus.type == BUS_PCI)
if (primaryBus.id.plat->pdev)
return MATCH_PCI_DEVICES(pEnt->bus.id.pci, primaryBus.id.plat->pdev);
#endif
if (primaryBus.type != pEnt->bus.type)
return FALSE;
switch (pEnt->bus.type) {
case BUS_PCI:
return pEnt->bus.id.pci == primaryBus.id.pci;
case BUS_SBUS:
return pEnt->bus.id.sbus.fbNum == primaryBus.id.sbus.fbNum;
case BUS_PLATFORM:
return pEnt->bus.id.plat == primaryBus.id.plat;
default:
return FALSE;
}
}
Bool
xf86DriverHasEntities(DriverPtr drvp)
{
int i;
for (i = 0; i < xf86NumEntities; i++) {
if (xf86Entities[i]->driver == drvp)
return TRUE;
}
return FALSE;
}
void
xf86AddEntityToScreen(ScrnInfoPtr pScrn, int entityIndex)
{
if (entityIndex == -1)
return;
if (xf86Entities[entityIndex]->inUse &&
!(xf86Entities[entityIndex]->entityProp & IS_SHARED_ACCEL)) {
ErrorF("Requested Entity already in use!\n");
return;
}
pScrn->numEntities++;
pScrn->entityList = XNFreallocarray(pScrn->entityList,
pScrn->numEntities, sizeof(int));
pScrn->entityList[pScrn->numEntities - 1] = entityIndex;
xf86Entities[entityIndex]->inUse = TRUE;
pScrn->entityInstanceList = XNFreallocarray(pScrn->entityInstanceList,
pScrn->numEntities,
sizeof(int));
pScrn->entityInstanceList[pScrn->numEntities - 1] = 0;
}
void
xf86SetEntityInstanceForScreen(ScrnInfoPtr pScrn, int entityIndex, int instance)
{
int i;
if (entityIndex == -1 || entityIndex >= xf86NumEntities)
return;
for (i = 0; i < pScrn->numEntities; i++) {
if (pScrn->entityList[i] == entityIndex) {
pScrn->entityInstanceList[i] = instance;
break;
}
}
}
/*
* XXX This needs to be updated for the case where a single entity may have
* instances associated with more than one screen.
*/
ScrnInfoPtr
xf86FindScreenForEntity(int entityIndex)
{
int i, j;
if (entityIndex == -1)
return NULL;
if (xf86Screens) {
for (i = 0; i < xf86NumScreens; i++) {
for (j = 0; j < xf86Screens[i]->numEntities; j++) {
if (xf86Screens[i]->entityList[j] == entityIndex)
return xf86Screens[i];
}
}
}
return NULL;
}
void
xf86RemoveEntityFromScreen(ScrnInfoPtr pScrn, int entityIndex)
{
int i;
for (i = 0; i < pScrn->numEntities; i++) {
if (pScrn->entityList[i] == entityIndex) {
for (i++; i < pScrn->numEntities; i++)
pScrn->entityList[i - 1] = pScrn->entityList[i];
pScrn->numEntities--;
xf86Entities[entityIndex]->inUse = FALSE;
break;
}
}
}
/*
* xf86ClearEntityListForScreen() - called when a screen is deleted
* to mark its entities unused. Called by xf86DeleteScreen().
*/
void
xf86ClearEntityListForScreen(ScrnInfoPtr pScrn)
{
int i, entityIndex;
if (pScrn->entityList == NULL || pScrn->numEntities == 0)
return;
for (i = 0; i < pScrn->numEntities; i++) {
entityIndex = pScrn->entityList[i];
xf86Entities[entityIndex]->inUse = FALSE;
/* disable resource: call the disable function */
}
free(pScrn->entityList);
free(pScrn->entityInstanceList);
pScrn->entityList = NULL;
pScrn->entityInstanceList = NULL;
}
/*
* Add an extra device section (GDevPtr) to an entity.
*/
void
xf86AddDevToEntity(int entityIndex, GDevPtr dev)
{
EntityPtr pEnt;
if (entityIndex >= xf86NumEntities)
return;
pEnt = xf86Entities[entityIndex];
pEnt->numInstances++;
pEnt->devices = XNFreallocarray(pEnt->devices,
pEnt->numInstances, sizeof(GDevPtr));
pEnt->devices[pEnt->numInstances - 1] = dev;
dev->claimed = TRUE;
}
void
xf86RemoveDevFromEntity(int entityIndex, GDevPtr dev)
{
EntityPtr pEnt;
int i, j;
if (entityIndex >= xf86NumEntities)
return;
pEnt = xf86Entities[entityIndex];
for (i = 0; i < pEnt->numInstances; i++) {
if (pEnt->devices[i] == dev) {
for (j = i; j < pEnt->numInstances - 1; j++)
pEnt->devices[j] = pEnt->devices[j + 1];
break;
}
}
pEnt->numInstances--;
dev->claimed = FALSE;
}
/*
* xf86GetEntityInfo() -- This function hands information from the
* EntityRec struct to the drivers. The EntityRec structure itself
* remains invisible to the driver.
*/
EntityInfoPtr
xf86GetEntityInfo(int entityIndex)
{
EntityInfoPtr pEnt;
int i;
if (entityIndex == -1)
return NULL;
if (entityIndex >= xf86NumEntities)
return NULL;
pEnt = XNFcallocarray(1, sizeof(EntityInfoRec));
pEnt->index = entityIndex;
pEnt->location = xf86Entities[entityIndex]->bus;
pEnt->active = xf86Entities[entityIndex]->active;
pEnt->chipset = xf86Entities[entityIndex]->chipset;
pEnt->driver = xf86Entities[entityIndex]->driver;
if ((xf86Entities[entityIndex]->devices) &&
(xf86Entities[entityIndex]->devices[0])) {
for (i = 0; i < xf86Entities[entityIndex]->numInstances; i++)
if (xf86Entities[entityIndex]->devices[i]->screen == 0)
break;
pEnt->device = xf86Entities[entityIndex]->devices[i];
}
else
pEnt->device = NULL;
return pEnt;
}
int
xf86GetNumEntityInstances(int entityIndex)
{
if (entityIndex >= xf86NumEntities)
return -1;
return xf86Entities[entityIndex]->numInstances;
}
GDevPtr
xf86GetDevFromEntity(int entityIndex, int instance)
{
int i;
/* We might not use AddDevtoEntity */
if ((!xf86Entities[entityIndex]->devices) ||
(!xf86Entities[entityIndex]->devices[0]))
return NULL;
if (entityIndex >= xf86NumEntities ||
instance >= xf86Entities[entityIndex]->numInstances)
return NULL;
for (i = 0; i < xf86Entities[entityIndex]->numInstances; i++)
if (xf86Entities[entityIndex]->devices[i]->screen == instance)
return xf86Entities[entityIndex]->devices[i];
return NULL;
}
/*
* xf86PostProbe() -- Allocate all non conflicting resources
* This function gets called by xf86Init().
*/
void
xf86PostProbe(void)
{
if (fbSlotClaimed && (
#if (defined(__sparc__) || defined(__sparc)) && !defined(__OpenBSD__)
sbusSlotClaimed ||
#endif
#ifdef XSERVER_PLATFORM_BUS
platformSlotClaimed ||
#endif
#ifdef XSERVER_LIBPCIACCESS
pciSlotClaimed
#else
TRUE
#endif
))
FatalError("Cannot run in framebuffer mode. Please specify busIDs "
" for all framebuffer devices\n");
}
Bool
xf86IsEntityShared(int entityIndex)
{
if (entityIndex < xf86NumEntities) {
if (xf86Entities[entityIndex]->entityProp & IS_SHARED_ACCEL) {
return TRUE;
}
}
return FALSE;
}
void
xf86SetEntityShared(int entityIndex)
{
if (entityIndex < xf86NumEntities) {
xf86Entities[entityIndex]->entityProp |= IS_SHARED_ACCEL;
}
}
Bool
xf86IsEntitySharable(int entityIndex)
{
if (entityIndex < xf86NumEntities) {
if (xf86Entities[entityIndex]->entityProp & ACCEL_IS_SHARABLE) {
return TRUE;
}
}
return FALSE;
}
void
xf86SetEntitySharable(int entityIndex)
{
if (entityIndex < xf86NumEntities) {
xf86Entities[entityIndex]->entityProp |= ACCEL_IS_SHARABLE;
}
}
Bool
xf86IsPrimInitDone(int entityIndex)
{
if (entityIndex < xf86NumEntities) {
if (xf86Entities[entityIndex]->entityProp & SA_PRIM_INIT_DONE) {
return TRUE;
}
}
return FALSE;
}
void
xf86SetPrimInitDone(int entityIndex)
{
if (entityIndex < xf86NumEntities) {
xf86Entities[entityIndex]->entityProp |= SA_PRIM_INIT_DONE;
}
}
void
xf86ClearPrimInitDone(int entityIndex)
{
if (entityIndex < xf86NumEntities) {
xf86Entities[entityIndex]->entityProp &= ~SA_PRIM_INIT_DONE;
}
}
/*
* Allocate a private in the entities.
*/
int
xf86AllocateEntityPrivateIndex(void)
{
int idx, i;
EntityPtr pEnt;
DevUnion *nprivs;
idx = xf86EntityPrivateCount++;
for (i = 0; i < xf86NumEntities; i++) {
pEnt = xf86Entities[i];
nprivs = XNFreallocarray(pEnt->entityPrivates,
xf86EntityPrivateCount, sizeof(DevUnion));
/* Zero the new private */
memset(&nprivs[idx], 0, sizeof(DevUnion));
pEnt->entityPrivates = nprivs;
}
return idx;
}
DevUnion *
xf86GetEntityPrivate(int entityIndex, int privIndex)
{
if (entityIndex >= xf86NumEntities || privIndex >= xf86EntityPrivateCount)
return NULL;
return &(xf86Entities[entityIndex]->entityPrivates[privIndex]);
}
Reference in New Issue View Git Blame Copy Permalink