625 lines
17 KiB
C
625 lines
17 KiB
C
/*
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* Copyright © 2012 Red Hat.
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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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Author: Dave Airlie <airlied@redhat.com>
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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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#ifdef XSERVER_PLATFORM_BUS
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#include <errno.h>
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#include <pciaccess.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "os.h"
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#include "hotplug.h"
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#include "systemd-logind.h"
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#include "xf86.h"
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#include "xf86_OSproc.h"
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#include "xf86Priv.h"
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#include "xf86str.h"
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#include "xf86Bus.h"
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#include "Pci.h"
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#include "xf86platformBus.h"
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#include "xf86Config.h"
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#include "randrstr.h"
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int platformSlotClaimed;
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int xf86_num_platform_devices;
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struct xf86_platform_device *xf86_platform_devices;
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int
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xf86_add_platform_device(struct OdevAttributes *attribs, Bool unowned)
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{
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xf86_platform_devices = xnfreallocarray(xf86_platform_devices,
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xf86_num_platform_devices + 1,
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sizeof(struct xf86_platform_device));
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xf86_platform_devices[xf86_num_platform_devices].attribs = attribs;
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xf86_platform_devices[xf86_num_platform_devices].pdev = NULL;
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xf86_platform_devices[xf86_num_platform_devices].flags =
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unowned ? XF86_PDEV_UNOWNED : 0;
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xf86_num_platform_devices++;
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return 0;
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}
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int
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xf86_remove_platform_device(int dev_index)
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{
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int j;
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config_odev_free_attributes(xf86_platform_devices[dev_index].attribs);
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for (j = dev_index; j < xf86_num_platform_devices - 1; j++)
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memcpy(&xf86_platform_devices[j], &xf86_platform_devices[j + 1], sizeof(struct xf86_platform_device));
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xf86_num_platform_devices--;
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return 0;
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}
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Bool
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xf86_get_platform_device_unowned(int index)
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{
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return (xf86_platform_devices[index].flags & XF86_PDEV_UNOWNED) ?
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TRUE : FALSE;
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}
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struct xf86_platform_device *
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xf86_find_platform_device_by_devnum(int major, int minor)
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{
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int i, attr_major, attr_minor;
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for (i = 0; i < xf86_num_platform_devices; i++) {
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attr_major = xf86_platform_odev_attributes(i)->major;
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attr_minor = xf86_platform_odev_attributes(i)->minor;
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if (attr_major == major && attr_minor == minor)
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return &xf86_platform_devices[i];
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}
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return NULL;
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}
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/*
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* xf86IsPrimaryPlatform() -- return TRUE if primary device
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* is a platform device and it matches this one.
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*/
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static Bool
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xf86IsPrimaryPlatform(struct xf86_platform_device *plat)
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{
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return ((primaryBus.type == BUS_PLATFORM) && (plat == primaryBus.id.plat));
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}
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static void
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platform_find_pci_info(struct xf86_platform_device *pd, char *busid)
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{
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struct pci_slot_match devmatch;
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struct pci_device *info;
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struct pci_device_iterator *iter;
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int ret;
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ret = sscanf(busid, "pci:%04x:%02x:%02x.%u",
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&devmatch.domain, &devmatch.bus, &devmatch.dev,
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&devmatch.func);
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if (ret != 4)
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return;
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iter = pci_slot_match_iterator_create(&devmatch);
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info = pci_device_next(iter);
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if (info) {
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pd->pdev = info;
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pci_device_probe(info);
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if (pci_device_is_boot_vga(info)) {
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primaryBus.type = BUS_PLATFORM;
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primaryBus.id.plat = pd;
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}
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}
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pci_iterator_destroy(iter);
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}
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static Bool
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xf86_check_platform_slot(const struct xf86_platform_device *pd)
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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 u = xf86Entities[i];
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if (pd->pdev && u->bus.type == BUS_PCI &&
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MATCH_PCI_DEVICES(pd->pdev, u->bus.id.pci)) {
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return FALSE;
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}
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if ((u->bus.type == BUS_PLATFORM) && (pd == u->bus.id.plat)) {
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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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static Bool
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MatchToken(const char *value, struct xorg_list *patterns,
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int (*compare)(const char *, const char *))
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{
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const xf86MatchGroup *group;
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/* If there are no patterns, accept the match */
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if (xorg_list_is_empty(patterns))
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return TRUE;
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/* If there are patterns but no attribute, reject the match */
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if (!value)
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return FALSE;
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/*
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* Otherwise, iterate the list of patterns ensuring each entry has a
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* match. Each list entry is a separate Match line of the same type.
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*/
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xorg_list_for_each_entry(group, patterns, entry) {
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Bool match = FALSE;
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char *const *cur;
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for (cur = group->values; *cur; cur++) {
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if ((*compare)(value, *cur) == 0) {
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match = TRUE;
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break;
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}
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}
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if (!match)
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return FALSE;
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}
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/* All the entries in the list matched the attribute */
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return TRUE;
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}
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static Bool
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OutputClassMatches(const XF86ConfOutputClassPtr oclass, int index)
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{
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char *driver = xf86_platform_odev_attributes(index)->driver;
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if (!MatchToken(driver, &oclass->match_driver, strcmp))
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return FALSE;
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return TRUE;
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}
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static int
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xf86OutputClassDriverList(int index, char *matches[], int nmatches)
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{
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XF86ConfOutputClassPtr cl;
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int i = 0;
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if (nmatches == 0)
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return 0;
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for (cl = xf86configptr->conf_outputclass_lst; cl; cl = cl->list.next) {
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if (OutputClassMatches(cl, index)) {
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char *path = xf86_platform_odev_attributes(index)->path;
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xf86Msg(X_INFO, "Applying OutputClass \"%s\" to %s\n",
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cl->identifier, path);
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xf86Msg(X_NONE, "\tloading driver: %s\n", cl->driver);
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matches[i++] = xstrdup(cl->driver);
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}
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if (i >= nmatches)
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break;
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}
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return i;
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}
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/**
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* @return The numbers of found devices that match with the current system
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* drivers.
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*/
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int
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xf86PlatformMatchDriver(char *matches[], int nmatches)
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{
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int i, j = 0;
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struct pci_device *info = NULL;
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int pass = 0;
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for (pass = 0; pass < 2; pass++) {
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for (i = 0; i < xf86_num_platform_devices; i++) {
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if (xf86IsPrimaryPlatform(&xf86_platform_devices[i]) && (pass == 1))
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continue;
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else if (!xf86IsPrimaryPlatform(&xf86_platform_devices[i]) && (pass == 0))
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continue;
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j += xf86OutputClassDriverList(i, &matches[j], nmatches - j);
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info = xf86_platform_devices[i].pdev;
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#ifdef __linux__
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if (info)
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j += xf86MatchDriverFromFiles(info->vendor_id, info->device_id,
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&matches[j], nmatches - j);
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#endif
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if ((info != NULL) && (j < nmatches)) {
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j += xf86VideoPtrToDriverList(info, &(matches[j]), nmatches - j);
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}
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}
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}
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return j;
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}
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int
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xf86platformProbe(void)
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{
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int i;
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Bool pci = TRUE;
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config_odev_probe(xf86PlatformDeviceProbe);
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if (!xf86scanpci()) {
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pci = FALSE;
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}
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for (i = 0; i < xf86_num_platform_devices; i++) {
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char *busid = xf86_platform_odev_attributes(i)->busid;
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if (pci && (strncmp(busid, "pci:", 4) == 0)) {
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platform_find_pci_info(&xf86_platform_devices[i], busid);
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}
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}
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return 0;
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}
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static int
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xf86ClaimPlatformSlot(struct xf86_platform_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 (xf86_check_platform_slot(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_PLATFORM;
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p->bus.id.plat = 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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platformSlotClaimed++;
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return num;
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}
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else
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return -1;
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}
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static int
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xf86UnclaimPlatformSlot(struct xf86_platform_device *d, GDevPtr dev)
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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_PLATFORM) && (p->bus.id.plat == d)) {
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if (dev)
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xf86RemoveDevFromEntity(i, dev);
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platformSlotClaimed--;
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p->bus.type = BUS_NONE;
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return 0;
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}
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}
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return 0;
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}
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#define END_OF_MATCHES(m) \
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(((m).vendor_id == 0) && ((m).device_id == 0) && ((m).subvendor_id == 0))
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static Bool doPlatformProbe(struct xf86_platform_device *dev, DriverPtr drvp,
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GDevPtr gdev, int flags, intptr_t match_data)
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{
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Bool foundScreen = FALSE;
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int entity;
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if (gdev && gdev->screen == 0 && !xf86_check_platform_slot(dev))
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return FALSE;
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entity = xf86ClaimPlatformSlot(dev, drvp, 0,
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gdev, gdev ? gdev->active : 0);
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if ((entity == -1) && gdev && (gdev->screen > 0)) {
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unsigned nent;
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for (nent = 0; nent < xf86NumEntities; nent++) {
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EntityPtr pEnt = xf86Entities[nent];
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if (pEnt->bus.type != BUS_PLATFORM)
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continue;
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if (pEnt->bus.id.plat == dev) {
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entity = nent;
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xf86AddDevToEntity(nent, gdev);
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break;
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}
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}
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}
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if (entity != -1) {
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if ((dev->flags & XF86_PDEV_SERVER_FD) && (!drvp->driverFunc ||
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!drvp->driverFunc(NULL, SUPPORTS_SERVER_FDS, NULL))) {
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systemd_logind_release_fd(dev->attribs->major, dev->attribs->minor, dev->attribs->fd);
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dev->attribs->fd = -1;
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dev->flags &= ~XF86_PDEV_SERVER_FD;
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}
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if (drvp->platformProbe(drvp, entity, flags, dev, match_data))
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foundScreen = TRUE;
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else
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xf86UnclaimPlatformSlot(dev, gdev);
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}
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return foundScreen;
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}
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static Bool
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probeSingleDevice(struct xf86_platform_device *dev, DriverPtr drvp, GDevPtr gdev, int flags)
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{
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int k;
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Bool foundScreen = FALSE;
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struct pci_device *pPci;
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const struct pci_id_match *const devices = drvp->supported_devices;
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if (dev->pdev && devices) {
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int device_id = dev->pdev->device_id;
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pPci = dev->pdev;
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for (k = 0; !END_OF_MATCHES(devices[k]); k++) {
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if (PCI_ID_COMPARE(devices[k].vendor_id, pPci->vendor_id)
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&& PCI_ID_COMPARE(devices[k].device_id, device_id)
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&& ((devices[k].device_class_mask & pPci->device_class)
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== devices[k].device_class)) {
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foundScreen = doPlatformProbe(dev, drvp, gdev, flags, devices[k].match_data);
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if (foundScreen)
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break;
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}
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}
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}
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else if (dev->pdev && !devices)
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return FALSE;
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else
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foundScreen = doPlatformProbe(dev, drvp, gdev, flags, 0);
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return foundScreen;
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}
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int
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xf86platformProbeDev(DriverPtr drvp)
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{
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Bool foundScreen = FALSE;
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GDevPtr *devList;
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const unsigned numDevs = xf86MatchDevice(drvp->driverName, &devList);
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int i, j;
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/* find the main device or any device specificed in xorg.conf */
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for (i = 0; i < numDevs; i++) {
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/* skip inactive devices */
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if (!devList[i]->active)
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continue;
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for (j = 0; j < xf86_num_platform_devices; j++) {
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if (devList[i]->busID && *devList[i]->busID) {
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if (xf86PlatformDeviceCheckBusID(&xf86_platform_devices[j], devList[i]->busID))
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break;
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}
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else {
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/* for non-seat0 servers assume first device is the master */
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if (ServerIsNotSeat0())
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break;
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if (xf86IsPrimaryPlatform(&xf86_platform_devices[j]))
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break;
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}
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}
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if (j == xf86_num_platform_devices)
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continue;
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foundScreen = probeSingleDevice(&xf86_platform_devices[j], drvp, devList[i], 0);
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if (!foundScreen)
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continue;
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}
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/* if autoaddgpu devices is enabled then go find any unclaimed platform
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* devices and add them as GPU screens */
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if (xf86Info.autoAddGPU) {
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for (j = 0; j < xf86_num_platform_devices; j++) {
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if (probeSingleDevice(&xf86_platform_devices[j], drvp,
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devList ? devList[0] : NULL,
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PLATFORM_PROBE_GPU_SCREEN))
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foundScreen = TRUE;
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}
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}
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return foundScreen;
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}
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int
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xf86platformAddDevice(int index)
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{
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int i, old_screens, scr_index;
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DriverPtr drvp = NULL;
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screenLayoutPtr layout;
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static const char *hotplug_driver_name = "modesetting";
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if (!xf86Info.autoAddGPU)
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return -1;
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/* force load the driver for now */
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xf86LoadOneModule(hotplug_driver_name, NULL);
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for (i = 0; i < xf86NumDrivers; i++) {
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if (!xf86DriverList[i])
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continue;
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if (!strcmp(xf86DriverList[i]->driverName, hotplug_driver_name)) {
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drvp = xf86DriverList[i];
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break;
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}
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}
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if (i == xf86NumDrivers)
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return -1;
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old_screens = xf86NumGPUScreens;
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doPlatformProbe(&xf86_platform_devices[index], drvp, NULL,
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PLATFORM_PROBE_GPU_SCREEN, 0);
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if (old_screens == xf86NumGPUScreens)
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return -1;
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i = old_screens;
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for (layout = xf86ConfigLayout.screens; layout->screen != NULL;
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layout++) {
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xf86GPUScreens[i]->confScreen = layout->screen;
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break;
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}
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if (xf86GPUScreens[i]->PreInit &&
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xf86GPUScreens[i]->PreInit(xf86GPUScreens[i], 0))
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xf86GPUScreens[i]->configured = TRUE;
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if (!xf86GPUScreens[i]->configured) {
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ErrorF("hotplugged device %d didn't configure\n", i);
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xf86DeleteScreen(xf86GPUScreens[i]);
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return -1;
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}
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scr_index = AddGPUScreen(xf86GPUScreens[i]->ScreenInit, 0, NULL);
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if (scr_index == -1) {
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xf86DeleteScreen(xf86GPUScreens[i]);
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xf86UnclaimPlatformSlot(&xf86_platform_devices[index], NULL);
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xf86NumGPUScreens = old_screens;
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return -1;
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}
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dixSetPrivate(&xf86GPUScreens[i]->pScreen->devPrivates,
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xf86ScreenKey, xf86GPUScreens[i]);
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CreateScratchPixmapsForScreen(xf86GPUScreens[i]->pScreen);
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if (xf86GPUScreens[i]->pScreen->CreateScreenResources &&
|
|
!(*xf86GPUScreens[i]->pScreen->CreateScreenResources) (xf86GPUScreens[i]->pScreen)) {
|
|
RemoveGPUScreen(xf86GPUScreens[i]->pScreen);
|
|
xf86DeleteScreen(xf86GPUScreens[i]);
|
|
xf86UnclaimPlatformSlot(&xf86_platform_devices[index], NULL);
|
|
xf86NumGPUScreens = old_screens;
|
|
return -1;
|
|
}
|
|
/* attach unbound to 0 protocol screen */
|
|
AttachUnboundGPU(xf86Screens[0]->pScreen, xf86GPUScreens[i]->pScreen);
|
|
|
|
RRResourcesChanged(xf86Screens[0]->pScreen);
|
|
RRTellChanged(xf86Screens[0]->pScreen);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
xf86platformRemoveDevice(int index)
|
|
{
|
|
EntityPtr entity;
|
|
int ent_num, i, j;
|
|
Bool found;
|
|
|
|
for (ent_num = 0; ent_num < xf86NumEntities; ent_num++) {
|
|
entity = xf86Entities[ent_num];
|
|
if (entity->bus.type == BUS_PLATFORM &&
|
|
entity->bus.id.plat == &xf86_platform_devices[index])
|
|
break;
|
|
}
|
|
if (ent_num == xf86NumEntities)
|
|
goto out;
|
|
|
|
found = FALSE;
|
|
for (i = 0; i < xf86NumGPUScreens; i++) {
|
|
for (j = 0; j < xf86GPUScreens[i]->numEntities; j++)
|
|
if (xf86GPUScreens[i]->entityList[j] == ent_num) {
|
|
found = TRUE;
|
|
break;
|
|
}
|
|
if (found)
|
|
break;
|
|
}
|
|
if (!found) {
|
|
ErrorF("failed to find screen to remove\n");
|
|
goto out;
|
|
}
|
|
|
|
xf86GPUScreens[i]->pScreen->CloseScreen(xf86GPUScreens[i]->pScreen);
|
|
|
|
RemoveGPUScreen(xf86GPUScreens[i]->pScreen);
|
|
xf86DeleteScreen(xf86GPUScreens[i]);
|
|
|
|
xf86UnclaimPlatformSlot(&xf86_platform_devices[index], NULL);
|
|
|
|
xf86_remove_platform_device(index);
|
|
|
|
RRResourcesChanged(xf86Screens[0]->pScreen);
|
|
RRTellChanged(xf86Screens[0]->pScreen);
|
|
out:
|
|
return;
|
|
}
|
|
|
|
/* called on return from VT switch to find any new devices */
|
|
void xf86platformVTProbe(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < xf86_num_platform_devices; i++) {
|
|
if (!(xf86_platform_devices[i].flags & XF86_PDEV_UNOWNED))
|
|
continue;
|
|
|
|
xf86_platform_devices[i].flags &= ~XF86_PDEV_UNOWNED;
|
|
xf86PlatformReprobeDevice(i, xf86_platform_devices[i].attribs);
|
|
}
|
|
}
|
|
|
|
void xf86platformPrimary(void)
|
|
{
|
|
/* use the first platform device as a fallback */
|
|
if (primaryBus.type == BUS_NONE) {
|
|
xf86Msg(X_INFO, "no primary bus or device found\n");
|
|
|
|
if (xf86_num_platform_devices > 0) {
|
|
primaryBus.id.plat = &xf86_platform_devices[0];
|
|
primaryBus.type = BUS_PLATFORM;
|
|
|
|
xf86Msg(X_NONE, "\tfalling back to %s\n", primaryBus.id.plat->attribs->syspath);
|
|
}
|
|
}
|
|
}
|
|
#endif
|