renesas/drm.git - libdrm, cloned from git://anongit.freedesktop.org/mesa/drm

diff options

author	Ian Romanick <idr@us.ibm.com>	2005-05-16 17:37:10 +0000
committer	Ian Romanick <idr@us.ibm.com>	2005-05-16 17:37:10 +0000
commit	e051cd19c00ed28997ff6fece0d1d4308b171229 (patch)
tree	ac705c230e9f7a5c1c6dcc5144cc2fc3d6fdbeb3 /shared/sis_drm.h
parent	bd72c6990f22381af61f62bffe70619f726d5923 (diff)

Added device_is_agp callback to drm_driver. This function is called by the

platform-specific drm_device_is_agp function. Added implementation of this function the the Linux-specific portion of the MGA driver to detect PCI G450 cards. Added code to the Linux-specific portion of the generic DRM layer to not initialize AGP infrastructure if the card is not AGP (this matches what already existed in BSD). Bumped the driver date and the driver patch-level for MGA. This mostly fixes bugzilla #3248. The BSD side still needs an implementation of mga_driver_device_is_agp.

Diffstat (limited to 'shared/sis_drm.h')

0 files changed, 0 insertions, 0 deletions

/************************************************************************** * * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEALINGS IN THE SOFTWARE. * **************************************************************************/ /* * Thanks to krh and jcristau for the tips on * going from fd to pci id via fstat and udev. */ #include "config.h" #include <errno.h> #include <stdio.h> #include <stdlib.h> #include <xf86drm.h> #include <string.h> #include <unistd.h> #include <sys/stat.h> #include "internal.h" #define PATH_SIZE 512 static int linux_name_from_sysfs(int fd, char **out) { char path[PATH_SIZE+1] = ""; /* initialize to please valgrind */ char link[PATH_SIZE+1] = ""; struct stat buffer; unsigned maj, min; char* slash_name; int ret; /* * Inside the sysfs directory for the device there is a symlink * to the directory representing the driver module, that path * happens to hold the name of the driver. * * So lets get the symlink for the drm device. Then read the link * and filter out the last directory which happens to be the name * of the driver, which we can use to load the correct interface. * * Thanks to Ray Strode of Plymouth for the code. */ ret = fstat(fd, &buffer); if (ret) return ret; if (!S_ISCHR(buffer.st_mode)) return -EINVAL; maj = major(buffer.st_rdev); min = minor(buffer.st_rdev); snprintf(path, PATH_SIZE, "/sys/dev/char/%d:%d/device/driver", maj, min); if (readlink(path, link, PATH_SIZE) < 0) return -EINVAL; /* link looks something like this: ../../../bus/pci/drivers/intel */ slash_name = strrchr(link, '/'); if (!slash_name) return -EINVAL; /* copy name and at the same time remove the slash */ *out = strdup(slash_name + 1); return 0; } static int linux_from_sysfs(int fd, struct kms_driver **out) { char *name; int ret; ret = linux_name_from_sysfs(fd, &name); if (ret) return ret; if (!strcmp(name, "intel")) ret = intel_create(fd, out); #ifdef HAVE_VMWGFX else if (!strcmp(name, "vmwgfx")) ret = vmwgfx_create(fd, out); #endif else ret = -ENOSYS; free(name); return ret; } #if 0 #define LIBUDEV_I_KNOW_THE_API_IS_SUBJECT_TO_CHANGE #include <libudev.h> struct create_record { unsigned vendor; unsigned chip; int (*func)(int fd, struct kms_driver **out); }; static struct create_record table[] = { { 0x8086, 0x2a42, intel_create }, /* i965 */ #ifdef HAVE_VMWGFX { 0x15ad, 0x0405, vmwgfx_create }, /* VMware vGPU */ #endif { 0, 0, NULL }, }; static int linux_get_pciid_from_fd(int fd, unsigned *vendor_id, unsigned *chip_id) { struct udev *udev; struct udev_device *device; struct udev_device *parent; const char *pci_id; struct stat buffer; int ret; ret = fstat(fd, &buffer); if (ret) return -EINVAL; if (!S_ISCHR(buffer.st_mode)) return -EINVAL; udev = udev_new(); if (!udev) return -ENOMEM; device = udev_device_new_from_devnum(udev, 'c', buffer.st_rdev); if (!device) goto err_free_udev; parent = udev_device_get_parent(device); if (!parent) goto err_free_device; pci_id = udev_device_get_property_value(parent, "PCI_ID"); if (!pci_id) goto err_free_device; if (sscanf(pci_id, "%x:%x", vendor_id, chip_id) != 2) goto err_free_device; udev_device_unref(device); udev_unref(udev); return 0; err_free_device: udev_device_unref(device); err_free_udev: udev_unref(udev); return -EINVAL; } static int linux_from_udev(int fd, struct kms_driver **out) { unsigned vendor_id, chip_id; int ret, i; ret = linux_get_pciid_from_fd(fd, &vendor_id, &chip_id); if (ret) return ret; for (i = 0; table[i].func; i++) if (table[i].vendor == vendor_id && table[i].chip == chip_id) return table[i].func(fd, out); return -ENOSYS; } #else static int linux_from_udev(int fd, struct kms_driver **out) { return -ENOSYS; } #endif int linux_create(int fd, struct kms_driver **out) { if (!linux_from_udev(fd, out)) return 0; return linux_from_sysfs(fd, out); }


context:
space:
mode: