535 lines
15 KiB
C
535 lines
15 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 "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 "randrstr.h"
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int platformSlotClaimed;
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int xf86_num_platform_devices;
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static struct xf86_platform_device *xf86_platform_devices;
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int
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xf86_add_platform_device(struct OdevAttributes *attribs)
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{
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xf86_platform_devices = xnfrealloc(xf86_platform_devices,
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(sizeof(struct xf86_platform_device)
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* (xf86_num_platform_devices + 1)));
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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_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_attribute_list(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_add_platform_device_attrib(int index, int attrib_id, char *attrib_name)
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{
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struct xf86_platform_device *device = &xf86_platform_devices[index];
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return config_odev_add_attribute(device->attribs, attrib_id, attrib_name);
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}
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char *
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xf86_get_platform_attrib(int index, int attrib_id)
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{
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struct xf86_platform_device *device = &xf86_platform_devices[index];
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struct OdevAttribute *oa;
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xorg_list_for_each_entry(oa, &device->attribs->list, member) {
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if (oa->attrib_id == attrib_id)
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return oa->attrib_name;
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}
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return NULL;
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}
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char *
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xf86_get_platform_device_attrib(struct xf86_platform_device *device, int attrib_id)
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{
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struct OdevAttribute *oa;
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xorg_list_for_each_entry(oa, &device->attribs->list, member) {
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if (oa->attrib_id == attrib_id)
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return oa->attrib_name;
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}
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return NULL;
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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].attribs->unowned;
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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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return !MATCH_PCI_DEVICES(pd->pdev, u->bus.id.pci);
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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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/**
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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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info = xf86_platform_devices[i].pdev;
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#ifdef __linux__
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if (info)
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xf86MatchDriverFromFiles(matches, info->vendor_id, info->device_id);
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#endif
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for (j = 0; (j < nmatches) && (matches[j]); j++) {
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/* find end of matches list */
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}
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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_get_platform_attrib(i, ODEV_ATTRIB_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->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->active);
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if ((entity == -1) && (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 (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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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 (xf86_platform_devices[j].pdev) {
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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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}
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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 a few more and add them as GPU screens */
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if (xf86Info.autoAddGPU && numDevs) {
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for (j = 0; j < xf86_num_platform_devices; j++) {
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probeSingleDevice(&xf86_platform_devices[j], drvp, devList[0], PLATFORM_PROBE_GPU_SCREEN);
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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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int entity;
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screenLayoutPtr layout;
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static const char *hotplug_driver_name = "modesetting";
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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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entity = xf86ClaimPlatformSlot(&xf86_platform_devices[index],
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drvp, 0, 0, 0);
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if (!drvp->platformProbe(drvp, entity, PLATFORM_PROBE_GPU_SCREEN, &xf86_platform_devices[index], 0)) {
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xf86UnclaimPlatformSlot(&xf86_platform_devices[index], NULL);
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}
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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 &&
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!(*xf86GPUScreens[i]->pScreen->CreateScreenResources) (xf86GPUScreens[i]->pScreen)) {
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RemoveGPUScreen(xf86GPUScreens[i]->pScreen);
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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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/* attach unbound to 0 protocol screen */
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AttachUnboundGPU(xf86Screens[0]->pScreen, xf86GPUScreens[i]->pScreen);
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RRResourcesChanged(xf86Screens[0]->pScreen);
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RRTellChanged(xf86Screens[0]->pScreen);
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return 0;
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}
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void
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xf86platformRemoveDevice(int index)
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{
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EntityPtr entity;
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int ent_num, i, j;
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Bool found;
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for (ent_num = 0; ent_num < xf86NumEntities; ent_num++) {
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entity = xf86Entities[ent_num];
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if (entity->bus.type == BUS_PLATFORM &&
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entity->bus.id.plat == &xf86_platform_devices[index])
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break;
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}
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if (ent_num == xf86NumEntities)
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goto out;
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found = FALSE;
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for (i = 0; i < xf86NumGPUScreens; i++) {
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for (j = 0; j < xf86GPUScreens[i]->numEntities; j++)
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if (xf86GPUScreens[i]->entityList[j] == ent_num) {
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found = TRUE;
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break;
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}
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if (found)
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break;
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}
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if (!found) {
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ErrorF("failed to find screen to remove\n");
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goto out;
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}
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xf86GPUScreens[i]->pScreen->CloseScreen(xf86GPUScreens[i]->pScreen);
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RemoveGPUScreen(xf86GPUScreens[i]->pScreen);
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xf86DeleteScreen(xf86GPUScreens[i]);
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xf86UnclaimPlatformSlot(&xf86_platform_devices[index], NULL);
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xf86_remove_platform_device(index);
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RRResourcesChanged(xf86Screens[0]->pScreen);
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RRTellChanged(xf86Screens[0]->pScreen);
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out:
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return;
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}
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/* called on return from VT switch to find any new devices */
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void xf86platformVTProbe(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < xf86_num_platform_devices; i++) {
|
|
if (xf86_platform_devices[i].attribs->unowned == FALSE)
|
|
continue;
|
|
|
|
xf86_platform_devices[i].attribs->unowned = FALSE;
|
|
xf86PlatformReprobeDevice(i, xf86_platform_devices[i].attribs);
|
|
}
|
|
}
|
|
#endif
|