424 lines
10 KiB
C
424 lines
10 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 <pciaccess.h>
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#include "os.h"
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#include "Pci.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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/* Bus-specific globals */
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Bool pciSlotClaimed = FALSE;
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#define PCIINFOCLASSES(c) \
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( (((c) & 0x00ff0000) == (PCI_CLASS_PREHISTORIC << 16)) \
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|| (((c) & 0x00ff0000) == (PCI_CLASS_DISPLAY << 16)) \
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|| ((((c) & 0x00ffff00) \
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== ((PCI_CLASS_MULTIMEDIA << 16) | (PCI_SUBCLASS_MULTIMEDIA_VIDEO << 8)))) \
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|| ((((c) & 0x00ffff00) \
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== ((PCI_CLASS_PROCESSOR << 16) | (PCI_SUBCLASS_PROCESSOR_COPROC << 8)))) )
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/*
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* PCI classes that have messages printed always. The others are only
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* have a message printed when the vendor/dev IDs are recognised.
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*/
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#define PCIALWAYSPRINTCLASSES(c) \
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( (((c) & 0x00ffff00) \
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== ((PCI_CLASS_PREHISTORIC << 16) | (PCI_SUBCLASS_PREHISTORIC_VGA << 8))) \
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|| (((c) & 0x00ff0000) == (PCI_CLASS_DISPLAY << 16)) \
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|| ((((c) & 0x00ffff00) \
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== ((PCI_CLASS_MULTIMEDIA << 16) | (PCI_SUBCLASS_MULTIMEDIA_VIDEO << 8)))) )
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#define IS_VGA(c) \
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(((c) & 0x00ffff00) \
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== ((PCI_CLASS_DISPLAY << 16) | (PCI_SUBCLASS_DISPLAY_VGA << 8)))
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void
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xf86FormatPciBusNumber(int busnum, char *buffer)
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{
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/* 'buffer' should be at least 8 characters long */
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if (busnum < 256)
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sprintf(buffer, "%d", busnum);
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else
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sprintf(buffer, "%d@%d", busnum & 0x00ff, busnum >> 8);
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}
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/*
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* xf86Bus.c interface
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*/
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void
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xf86PciProbe(void)
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{
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int i = 0, k;
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int num = 0;
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struct pci_device *info;
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struct pci_device_iterator *iter;
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struct pci_device ** xf86PciVideoInfo = NULL;
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if (!xf86scanpci()) {
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xf86PciVideoInfo = NULL;
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return;
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}
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iter = pci_slot_match_iterator_create(& xf86IsolateDevice);
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while ((info = pci_device_next(iter)) != NULL) {
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if (PCIINFOCLASSES(info->device_class)) {
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num++;
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xf86PciVideoInfo = xnfrealloc(xf86PciVideoInfo,
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(sizeof(struct pci_device *)
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* (num + 1)));
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xf86PciVideoInfo[num] = NULL;
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xf86PciVideoInfo[num - 1] = info;
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pci_device_probe(info);
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#ifdef HAVE_PCI_DEVICE_IS_BOOT_VGA
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if (pci_device_is_boot_vga(info)) {
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primaryBus.type = BUS_PCI;
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primaryBus.id.pci = info;
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}
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#endif
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info->user_data = 0;
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}
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}
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free(iter);
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/* If we haven't found a primary device try a different heuristic */
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if (primaryBus.type == BUS_NONE && num) {
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for (i = 0; i < num; i++) {
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uint16_t command;
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info = xf86PciVideoInfo[i];
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pci_device_cfg_read_u16(info, & command, 4);
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if ((command & PCI_CMD_MEM_ENABLE)
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&& ((num == 1) || IS_VGA(info->device_class))) {
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if (primaryBus.type == BUS_NONE) {
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primaryBus.type = BUS_PCI;
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primaryBus.id.pci = info;
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} else {
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xf86Msg(X_NOTICE,
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"More than one possible primary device found\n");
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primaryBus.type ^= (BusType)(-1);
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}
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}
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}
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}
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/* Print a summary of the video devices found */
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for (k = 0; k < num; k++) {
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const char *vendorname = NULL, *chipname = NULL;
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const char *prim = " ";
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Bool memdone = FALSE, iodone = FALSE;
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info = xf86PciVideoInfo[k];
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vendorname = pci_device_get_vendor_name( info );
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chipname = pci_device_get_device_name( info );
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if ((!vendorname || !chipname) &&
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!PCIALWAYSPRINTCLASSES(info->device_class))
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continue;
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if (xf86IsPrimaryPci(info))
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prim = "*";
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xf86Msg(X_PROBED, "PCI:%s(%u:%u:%u:%u) %04x:%04x:%04x:%04x ", prim,
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info->domain, info->bus, info->dev, info->func,
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info->vendor_id, info->device_id,
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info->subvendor_id, info->subdevice_id);
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if (vendorname)
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xf86ErrorF("%s ", vendorname);
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if (chipname)
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xf86ErrorF("%s ", chipname);
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xf86ErrorF("rev %d", info->revision);
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for (i = 0; i < 6; i++) {
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struct pci_mem_region * r = & info->regions[i];
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if ( r->size && ! r->is_IO ) {
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if (!memdone) {
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xf86ErrorF(", Mem @ ");
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memdone = TRUE;
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} else
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xf86ErrorF(", ");
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xf86ErrorF("0x%08lx/%ld", (long)r->base_addr, (long)r->size);
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}
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}
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for (i = 0; i < 6; i++) {
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struct pci_mem_region * r = & info->regions[i];
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if ( r->size && r->is_IO ) {
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if (!iodone) {
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xf86ErrorF(", I/O @ ");
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iodone = TRUE;
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} else
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xf86ErrorF(", ");
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xf86ErrorF("0x%08lx/%ld", (long)r->base_addr, (long)r->size);
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}
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}
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if ( info->rom_size ) {
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xf86ErrorF(", BIOS @ 0x\?\?\?\?\?\?\?\?/%ld", (long)info->rom_size);
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}
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xf86ErrorF("\n");
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}
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xfree(xf86PciVideoInfo);
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}
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/*
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* If the slot requested is already in use, return -1.
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* Otherwise, claim the slot for the screen requesting it.
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*/
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int
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xf86ClaimPciSlot(struct pci_device * d, DriverPtr drvp,
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int chipset, GDevPtr dev, Bool active)
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{
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EntityPtr p = NULL;
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int num;
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if (xf86CheckPciSlot(d)) {
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num = xf86AllocateEntity();
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p = xf86Entities[num];
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p->driver = drvp;
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p->chipset = chipset;
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p->bus.type = BUS_PCI;
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p->bus.id.pci = d;
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p->active = active;
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p->inUse = FALSE;
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if (dev)
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xf86AddDevToEntity(num, dev);
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pciSlotClaimed = TRUE;
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if (active) {
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/* Map in this domain's I/O space */
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p->domainIO = xf86MapLegacyIO(d);
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}
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return num;
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} else
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return -1;
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}
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/*
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* Unclaim PCI slot, e.g. if probing failed, so that a different driver can claim.
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*/
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void
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xf86UnclaimPciSlot(struct pci_device *d)
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{
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int i;
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for (i = 0; i < xf86NumEntities; i++) {
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const EntityPtr p = xf86Entities[i];
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if ((p->bus.type == BUS_PCI) && (p->bus.id.pci == d)) {
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/* Probably the slot should be deallocated? */
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p->bus.type = BUS_NONE;
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return;
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}
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}
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}
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/*
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* Parse a BUS ID string, and return the PCI bus parameters if it was
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* in the correct format for a PCI bus id.
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*/
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Bool
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xf86ParsePciBusString(const char *busID, int *bus, int *device, int *func)
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{
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/*
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* The format is assumed to be "bus[@domain]:device[:func]", where domain,
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* bus, device and func are decimal integers. domain and func may be
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* omitted and assumed to be zero, although doing this isn't encouraged.
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*/
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char *p, *s, *d;
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const char *id;
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int i;
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if (StringToBusType(busID, &id) != BUS_PCI)
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return FALSE;
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s = xstrdup(id);
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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 FALSE;
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}
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d = strpbrk(p, "@");
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if (d != NULL) {
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*(d++) = 0;
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for (i = 0; d[i] != 0; i++) {
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if (!isdigit(d[i])) {
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xfree(s);
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return FALSE;
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}
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}
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}
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for (i = 0; p[i] != 0; i++) {
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if (!isdigit(p[i])) {
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xfree(s);
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return FALSE;
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}
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}
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*bus = atoi(p);
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if (d != NULL && *d != 0)
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*bus += atoi(d) << 8;
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p = strtok(NULL, ":");
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if (p == NULL || *p == 0) {
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xfree(s);
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return FALSE;
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}
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for (i = 0; p[i] != 0; i++) {
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if (!isdigit(p[i])) {
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xfree(s);
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return FALSE;
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}
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}
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*device = atoi(p);
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*func = 0;
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p = strtok(NULL, ":");
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if (p == NULL || *p == 0) {
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xfree(s);
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return TRUE;
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}
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for (i = 0; p[i] != 0; i++) {
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if (!isdigit(p[i])) {
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xfree(s);
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return FALSE;
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}
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}
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*func = atoi(p);
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xfree(s);
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return TRUE;
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}
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/*
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* Compare a BUS ID string with a PCI bus id. Return TRUE if they match.
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*/
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Bool
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xf86ComparePciBusString(const char *busID, int bus, int device, int func)
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{
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int ibus, idevice, ifunc;
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if (xf86ParsePciBusString(busID, &ibus, &idevice, &ifunc)) {
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return bus == ibus && device == idevice && func == ifunc;
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} else {
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return FALSE;
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}
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}
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/*
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* xf86IsPrimaryPci() -- return TRUE if primary device
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* is PCI and bus, dev and func numbers match.
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*/
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Bool
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xf86IsPrimaryPci(struct pci_device *pPci)
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{
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return ((primaryBus.type == BUS_PCI) && (pPci == primaryBus.id.pci));
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}
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/*
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* xf86GetPciInfoForEntity() -- Get the pciVideoRec of entity.
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*/
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struct pci_device *
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xf86GetPciInfoForEntity(int entityIndex)
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{
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EntityPtr p;
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if (entityIndex >= xf86NumEntities)
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return NULL;
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p = xf86Entities[entityIndex];
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return (p->bus.type == BUS_PCI) ? p->bus.id.pci : NULL;
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}
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/*
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* xf86CheckPciMemBase() checks that the memory base value matches one of the
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* PCI base address register values for the given PCI device.
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*/
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Bool
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xf86CheckPciMemBase( struct pci_device * pPci, memType base )
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{
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int i;
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for (i = 0; i < 6; i++)
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if (base == pPci->regions[i].base_addr)
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return TRUE;
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return FALSE;
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}
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/*
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* Check if the slot requested is free. If it is already in use, return FALSE.
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*/
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Bool
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xf86CheckPciSlot(const struct pci_device *d)
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{
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int i;
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for (i = 0; i < xf86NumEntities; i++) {
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const EntityPtr p = xf86Entities[i];
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if ((p->bus.type == BUS_PCI) && (p->bus.id.pci == d)) {
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return FALSE;
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}
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}
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return TRUE;
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}
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