684 lines
16 KiB
C
684 lines
16 KiB
C
/*
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* Copyright (c) 1997-2003 by The XFree86 Project, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of the copyright holder(s)
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* and author(s) shall not be used in advertising or otherwise to promote
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* the sale, use or other dealings in this Software without prior written
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* authorization from the copyright holder(s) and author(s).
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*/
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/*
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* This file contains the interfaces to the bus-specific code
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include <ctype.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <X11/X.h>
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#include "os.h"
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#include "xf86.h"
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#include "xf86Priv.h"
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/* Bus-specific headers */
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#include "xf86Bus.h"
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#define XF86_OS_PRIVS
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#include "xf86_OSproc.h"
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#include "xf86VGAarbiter.h"
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#include "Pci.h"
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/* Entity data */
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EntityPtr *xf86Entities = NULL; /* Bus slots claimed by drivers */
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int xf86NumEntities = 0;
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static int xf86EntityPrivateCount = 0;
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BusRec primaryBus = { BUS_NONE, { 0 } };
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static Bool xf86ResAccessEnter = FALSE;
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static Bool doFramebufferMode = FALSE;
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/*
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* Call the bus probes relevant to the architecture.
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*
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* The only one available so far is for PCI and SBUS.
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*/
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void
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xf86BusProbe(void)
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{
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xf86PciProbe();
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#if (defined(__sparc__) || defined(__sparc)) && !defined(__OpenBSD__)
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xf86SbusProbe();
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#endif
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}
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/*
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* Determine what bus type the busID string represents. The start of the
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* bus-dependent part of the string is returned as retID.
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*/
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BusType
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StringToBusType(const char* busID, const char **retID)
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{
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char *p, *s;
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BusType ret = BUS_NONE;
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/* If no type field, Default to PCI */
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if (isdigit(busID[0])) {
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if (retID)
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*retID = busID;
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return BUS_PCI;
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}
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s = xstrdup(busID);
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p = strtok(s, ":");
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if (p == NULL || *p == 0) {
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xfree(s);
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return BUS_NONE;
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}
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if (!xf86NameCmp(p, "pci") || !xf86NameCmp(p, "agp"))
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ret = BUS_PCI;
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if (!xf86NameCmp(p, "sbus"))
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ret = BUS_SBUS;
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if (ret != BUS_NONE)
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if (retID)
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*retID = busID + strlen(p) + 1;
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xfree(s);
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return ret;
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}
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/*
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* Entity related code.
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*/
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void
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xf86EntityInit(void)
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{
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int i;
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for (i = 0; i < xf86NumEntities; i++)
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if (xf86Entities[i]->entityInit) {
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xf86Entities[i]->entityInit(i,xf86Entities[i]->private);
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}
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}
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int
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xf86AllocateEntity(void)
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{
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xf86NumEntities++;
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xf86Entities = xnfrealloc(xf86Entities,
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sizeof(EntityPtr) * xf86NumEntities);
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xf86Entities[xf86NumEntities - 1] = xnfcalloc(1,sizeof(EntityRec));
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xf86Entities[xf86NumEntities - 1]->entityPrivates =
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xnfcalloc(sizeof(DevUnion) * xf86EntityPrivateCount, 1);
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return (xf86NumEntities - 1);
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}
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static void
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EntityEnter(void)
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{
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int i;
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for (i = 0; i < xf86NumEntities; i++)
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if (xf86Entities[i]->entityEnter) {
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xf86Entities[i]->entityEnter(i,xf86Entities[i]->private);
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}
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}
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static void
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EntityLeave(void)
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{
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int i;
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for (i = 0; i < xf86NumEntities; i++)
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if (xf86Entities[i]->entityLeave) {
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xf86Entities[i]->entityLeave(i,xf86Entities[i]->private);
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}
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}
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Bool
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xf86IsEntityPrimary(int entityIndex)
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{
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EntityPtr pEnt = xf86Entities[entityIndex];
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if (primaryBus.type != pEnt->bus.type) return FALSE;
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switch (pEnt->bus.type) {
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case BUS_PCI:
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return (pEnt->bus.id.pci == primaryBus.id.pci);
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case BUS_SBUS:
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return (pEnt->bus.id.sbus.fbNum == primaryBus.id.sbus.fbNum);
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default:
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return FALSE;
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}
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}
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Bool
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xf86SetEntityFuncs(int entityIndex, EntityProc init, EntityProc enter,
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EntityProc leave, pointer private)
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{
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if (entityIndex >= xf86NumEntities)
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return FALSE;
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xf86Entities[entityIndex]->entityInit = init;
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xf86Entities[entityIndex]->entityEnter = enter;
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xf86Entities[entityIndex]->entityLeave = leave;
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xf86Entities[entityIndex]->private = private;
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return TRUE;
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}
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Bool
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xf86DriverHasEntities(DriverPtr drvp)
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{
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int i;
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for (i = 0; i < xf86NumEntities; i++) {
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if (xf86Entities[i]->driver == drvp)
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return TRUE;
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}
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return FALSE;
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}
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void
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xf86AddEntityToScreen(ScrnInfoPtr pScrn, int entityIndex)
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{
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if (entityIndex == -1)
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return;
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if (xf86Entities[entityIndex]->inUse &&
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!(xf86Entities[entityIndex]->entityProp & IS_SHARED_ACCEL)) {
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ErrorF("Requested Entity already in use!\n");
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return;
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}
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pScrn->numEntities++;
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pScrn->entityList = xnfrealloc(pScrn->entityList,
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pScrn->numEntities * sizeof(int));
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pScrn->entityList[pScrn->numEntities - 1] = entityIndex;
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xf86Entities[entityIndex]->inUse = TRUE;
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pScrn->entityInstanceList = xnfrealloc(pScrn->entityInstanceList,
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pScrn->numEntities * sizeof(int));
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pScrn->entityInstanceList[pScrn->numEntities - 1] = 0;
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pScrn->domainIOBase = xf86Entities[entityIndex]->domainIO;
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}
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void
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xf86SetEntityInstanceForScreen(ScrnInfoPtr pScrn, int entityIndex, int instance)
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{
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int i;
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if (entityIndex == -1 || entityIndex >= xf86NumEntities)
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return;
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for (i = 0; i < pScrn->numEntities; i++) {
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if (pScrn->entityList[i] == entityIndex) {
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pScrn->entityInstanceList[i] = instance;
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break;
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}
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}
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}
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/*
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* XXX This needs to be updated for the case where a single entity may have
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* instances associated with more than one screen.
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*/
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ScrnInfoPtr
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xf86FindScreenForEntity(int entityIndex)
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{
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int i,j;
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if (entityIndex == -1) return NULL;
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if (xf86Screens) {
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for (i = 0; i < xf86NumScreens; i++) {
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for (j = 0; j < xf86Screens[i]->numEntities; j++) {
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if ( xf86Screens[i]->entityList[j] == entityIndex )
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return (xf86Screens[i]);
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}
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}
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}
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return NULL;
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}
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void
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xf86RemoveEntityFromScreen(ScrnInfoPtr pScrn, int entityIndex)
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{
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int i;
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for (i = 0; i < pScrn->numEntities; i++) {
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if (pScrn->entityList[i] == entityIndex) {
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for (i++; i < pScrn->numEntities; i++)
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pScrn->entityList[i-1] = pScrn->entityList[i];
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pScrn->numEntities--;
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xf86Entities[entityIndex]->inUse = FALSE;
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break;
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}
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}
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}
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/*
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* xf86ClearEntitiesForScreen() - called when a screen is deleted
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* to mark it's entities unused. Called by xf86DeleteScreen().
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*/
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void
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xf86ClearEntityListForScreen(int scrnIndex)
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{
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ScrnInfoPtr pScrn = xf86Screens[scrnIndex];
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int i, entityIndex;
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if (pScrn->entityList == NULL || pScrn->numEntities == 0) return;
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for (i = 0; i < pScrn->numEntities; i++) {
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entityIndex = pScrn->entityList[i];
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xf86Entities[entityIndex]->inUse = FALSE;
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/* disable resource: call the disable function */
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}
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xfree(pScrn->entityList);
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xfree(pScrn->entityInstanceList);
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pScrn->entityList = NULL;
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pScrn->entityInstanceList = NULL;
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}
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/*
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* Add an extra device section (GDevPtr) to an entity.
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*/
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void
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xf86AddDevToEntity(int entityIndex, GDevPtr dev)
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{
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EntityPtr pEnt;
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if (entityIndex >= xf86NumEntities)
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return;
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pEnt = xf86Entities[entityIndex];
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pEnt->numInstances++;
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pEnt->devices = xnfrealloc(pEnt->devices,
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pEnt->numInstances * sizeof(GDevPtr));
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pEnt->devices[pEnt->numInstances - 1] = dev;
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dev->claimed = TRUE;
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}
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/*
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* xf86GetEntityInfo() -- This function hands information from the
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* EntityRec struct to the drivers. The EntityRec structure itself
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* remains invisible to the driver.
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*/
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EntityInfoPtr
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xf86GetEntityInfo(int entityIndex)
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{
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EntityInfoPtr pEnt;
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int i;
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if (entityIndex == -1)
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return NULL;
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if (entityIndex >= xf86NumEntities)
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return NULL;
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pEnt = xnfcalloc(1,sizeof(EntityInfoRec));
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pEnt->index = entityIndex;
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pEnt->location = xf86Entities[entityIndex]->bus;
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pEnt->active = xf86Entities[entityIndex]->active;
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pEnt->chipset = xf86Entities[entityIndex]->chipset;
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pEnt->driver = xf86Entities[entityIndex]->driver;
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if ( (xf86Entities[entityIndex]->devices) &&
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(xf86Entities[entityIndex]->devices[0]) ) {
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for (i = 0; i < xf86Entities[entityIndex]->numInstances; i++)
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if (xf86Entities[entityIndex]->devices[i]->screen == 0)
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break;
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pEnt->device = xf86Entities[entityIndex]->devices[i];
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} else
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pEnt->device = NULL;
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return pEnt;
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}
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int
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xf86GetNumEntityInstances(int entityIndex)
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{
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if (entityIndex >= xf86NumEntities)
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return -1;
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return xf86Entities[entityIndex]->numInstances;
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}
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GDevPtr
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xf86GetDevFromEntity(int entityIndex, int instance)
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{
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int i;
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/* We might not use AddDevtoEntity */
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if ( (!xf86Entities[entityIndex]->devices) ||
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(!xf86Entities[entityIndex]->devices[0]) )
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return NULL;
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if (entityIndex >= xf86NumEntities ||
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instance >= xf86Entities[entityIndex]->numInstances)
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return NULL;
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for (i = 0; i < xf86Entities[entityIndex]->numInstances; i++)
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if (xf86Entities[entityIndex]->devices[i]->screen == instance)
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break;
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return xf86Entities[entityIndex]->devices[i];
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}
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/*
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* xf86AccessInit() - set up everything needed for access control
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* called only once on first server generation.
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*/
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void
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xf86AccessInit(void)
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{
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xf86ResAccessEnter = TRUE;
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}
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/*
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* xf86AccessEnter() -- gets called to save the text mode VGA IO
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* resources when reentering the server after a VT switch.
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*/
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void
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xf86AccessEnter(void)
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{
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if (xf86ResAccessEnter)
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return;
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/*
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* on enter we simply disable routing of special resources
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* to any bus and let the RAC code to "open" the right bridges.
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*/
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EntityEnter();
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xf86EnterServerState(SETUP);
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xf86ResAccessEnter = TRUE;
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}
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/*
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* xf86AccessLeave() -- prepares access for and calls the
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* entityLeave() functions.
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* xf86AccessLeaveState() --- gets called to restore the
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* access to the VGA IO resources when switching VT or on
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* server exit.
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* This was split to call xf86AccessLeaveState() from
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* ddxGiveUp().
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*/
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void
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xf86AccessLeave(void)
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{
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if (!xf86ResAccessEnter)
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return;
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EntityLeave();
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}
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/*
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* xf86EnableAccess() -- enable access to controlled resources.
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* To reduce latency when switching access the ScrnInfoRec has
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* a linked list of the EntityAccPtr of all screen entities.
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*/
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/*
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* switching access needs to be done in te following oder:
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* disable
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* 1. disable old entity
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* 2. reroute bus
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* 3. enable new entity
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* Otherwise resources needed for access control might be shadowed
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* by other resources!
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*/
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void
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xf86EnableAccess(ScrnInfoPtr pScrn)
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{
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DebugF("Enable access %i\n",pScrn->scrnIndex);
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return;
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}
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/*
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* xf86EnterServerState() -- set state the server is in.
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*/
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typedef enum { TRI_UNSET, TRI_TRUE, TRI_FALSE } TriState;
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static void
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SetSIGIOForState(xf86State state)
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{
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static int sigio_state;
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static TriState sigio_blocked = TRI_UNSET;
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if ((state == SETUP) && (sigio_blocked != TRI_TRUE)) {
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sigio_state = xf86BlockSIGIO();
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sigio_blocked = TRI_TRUE;
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} else if ((state == OPERATING) && (sigio_blocked != TRI_UNSET)) {
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xf86UnblockSIGIO(sigio_state);
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sigio_blocked = TRI_FALSE;
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}
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}
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void
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xf86EnterServerState(xf86State state)
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{
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/*
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* This is a good place to block SIGIO during SETUP state.
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* SIGIO should be blocked in SETUP state otherwise (u)sleep()
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* might get interrupted early.
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* We take care not to call xf86BlockSIGIO() twice.
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*/
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SetSIGIOForState(state);
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if (state == SETUP)
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DebugF("Entering SETUP state\n");
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else
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DebugF("Entering OPERATING state\n");
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return;
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}
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/*
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* xf86PostProbe() -- Allocate all non conflicting resources
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* This function gets called by xf86Init().
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*/
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void
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xf86PostProbe(void)
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{
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if (fbSlotClaimed) {
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if (pciSlotClaimed
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#if (defined(__sparc__) || defined(__sparc)) && !defined(__OpenBSD__)
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|| sbusSlotClaimed
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#endif
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) {
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FatalError("Cannot run in framebuffer mode. Please specify busIDs "
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" for all framebuffer devices\n");
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return;
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} else {
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xf86Msg(X_INFO,"Running in FRAMEBUFFER Mode\n");
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doFramebufferMode = TRUE;
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return;
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}
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}
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}
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void
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xf86PostScreenInit(void)
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{
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if (doFramebufferMode) {
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SetSIGIOForState(OPERATING);
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return;
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}
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xf86VGAarbiterWrapFunctions();
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DebugF("PostScreenInit generation: %i\n",serverGeneration);
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xf86EnterServerState(OPERATING);
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}
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/*
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* xf86FindPrimaryDevice() - Find the display device which
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* was active when the server was started.
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*/
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void
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xf86FindPrimaryDevice(void)
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{
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if (primaryBus.type != BUS_NONE) {
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char *bus;
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char loc[16];
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switch (primaryBus.type) {
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case BUS_PCI:
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bus = "PCI";
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snprintf(loc, sizeof(loc), " %2.2x@%2.2x:%2.2x:%1.1x",
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primaryBus.id.pci->bus,
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primaryBus.id.pci->domain,
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primaryBus.id.pci->dev,
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primaryBus.id.pci->func);
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break;
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case BUS_SBUS:
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bus = "SBUS";
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snprintf(loc, sizeof(loc), " %2.2x", primaryBus.id.sbus.fbNum);
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break;
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default:
|
|
bus = "";
|
|
loc[0] = '\0';
|
|
}
|
|
|
|
xf86MsgVerb(X_INFO, 2, "Primary Device is: %s%s\n",bus,loc);
|
|
}
|
|
}
|
|
|
|
int
|
|
xf86GetLastScrnFlag(int entityIndex)
|
|
{
|
|
if(entityIndex < xf86NumEntities) {
|
|
return(xf86Entities[entityIndex]->lastScrnFlag);
|
|
} else {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
void
|
|
xf86SetLastScrnFlag(int entityIndex, int scrnIndex)
|
|
{
|
|
if(entityIndex < xf86NumEntities) {
|
|
xf86Entities[entityIndex]->lastScrnFlag = scrnIndex;
|
|
}
|
|
}
|
|
|
|
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 = xnfrealloc(pEnt->entityPrivates,
|
|
xf86EntityPrivateCount * sizeof(DevUnion));
|
|
/* Zero the new private */
|
|
bzero(&nprivs[idx], 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]);
|
|
}
|
|
|