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loader: introduce the loader util lib

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All the various window system integration layers duplicate roughly the
same code for figuring out device and driver name, pci-id's, etc.  Which
is sad.  So extract it out into a loader util lib.

v2 (Emil)
* Separate the introduction of libloader from the code de-duplication.
* Strip out non-pci devices support.
* Add scons + Android build system support.
* Add VISIBILITY_CFLAGS to avoid exporting the loader funcs.

v3 (Emil)
* PIPE_OS_ANDROID is undefined at this scope, use ANDROID
* Make sure we define _EGL_NO_DRM when building only swrast

Signed-off-by: Rob Clark <robclark@freedesktop.org>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Emil Velikov
2014-01-10 23:36:16 +00:00
parent 1c5e2965a0
commit 8c2e7fd846
22 changed files with 506 additions and 15 deletions
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304
src/loader/loader.c Normal file
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/*
* Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
*
* This code is derived from the following files.
*
* * src/glx/dri3_common.c
* Copyright © 2013 Keith Packard
*
* * src/egl/drivers/dri2/common.c
* * src/gbm/backends/dri/driver_name.c
* Copyright © 2011 Intel Corporation
*
* Authors:
* Kristian Høgsberg <krh@bitplanet.net>
* Benjamin Franzke <benjaminfranzke@googlemail.com>
*
* * src/gallium/targets/egl-static/egl.c
* Copyright (C) 2010-2011 LunarG Inc.
*
* Authors:
* Chia-I Wu <olv@lunarg.com>
*
* * src/gallium/state_trackers/egl/drm/native_drm.c
* Copyright (C) 2010 Chia-I Wu <olv@0xlab.org>
*
* * src/egl/drivers/dri2/platform_android.c
*
* Copyright (C) 2010-2011 Chia-I Wu <olvaffe@gmail.com>
* Copyright (C) 2010-2011 LunarG Inc.
*
* Based on platform_x11, which has
*
* Copyright © 2011 Intel Corporation
*
* * src/gallium/auxiliary/pipe-loader/pipe_loader_drm.c
* Copyright 2011 Intel Corporation
* Copyright 2012 Francisco Jerez
* All Rights Reserved.
*
* Authors:
* Kristian Høgsberg <krh@bitplanet.net>
* Benjamin Franzke <benjaminfranzke@googlemail.com>
*
* 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, sublicense,
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*
* Authors:
* Rob Clark <robclark@freedesktop.org>
*/
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include "loader.h"
#include <xf86drm.h>
#define __IS_LOADER
#include "pci_ids/pci_id_driver_map.h"
static void default_logger(int level, const char *fmt, ...)
{
if (level >= _LOADER_WARNING) {
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
fprintf(stderr, "\n");
}
}
static void (*log)(int level, const char *fmt, ...) = default_logger;
#ifdef HAVE_LIBUDEV
#include <libudev.h>
static inline struct udev_device *
udev_device_new_from_fd(struct udev *udev, int fd)
{
struct udev_device *device;
struct stat buf;
if (fstat(fd, &buf) < 0) {
log(_LOADER_WARNING, "MESA-LOADER: failed to stat fd %d", fd);
return NULL;
}
device = udev_device_new_from_devnum(udev, 'c', buf.st_rdev);
if (device == NULL) {
log(_LOADER_WARNING,
"MESA-LOADER: could not create udev device for fd %d", fd);
return NULL;
}
return device;
}
int
loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
{
struct udev *udev = NULL;
struct udev_device *device = NULL, *parent;
struct stat buf;
const char *pci_id;
*chip_id = -1;
udev = udev_new();
device = udev_device_new_from_fd(udev, fd);
if (!device)
goto out;
parent = udev_device_get_parent(device);
if (parent == NULL) {
log(_LOADER_WARNING, "MESA-LOADER: could not get parent device");
goto out;
}
pci_id = udev_device_get_property_value(parent, "PCI_ID");
if (pci_id == NULL ||
sscanf(pci_id, "%x:%x", vendor_id, chip_id) != 2) {
log(_LOADER_WARNING, "MESA-LOADER: malformed or no PCI ID");
*chip_id = -1;
goto out;
}
out:
if (device)
udev_device_unref(device);
if (udev)
udev_unref(udev);
return (*chip_id >= 0);
}
#elif defined(ANDROID) && !defined(_EGL_NO_DRM)
/* for i915 */
#include <i915_drm.h>
/* for radeon */
#include <radeon_drm.h>
int
loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
{
drmVersionPtr version;
*chip_id = -1;
version = drmGetVersion(fd);
if (!version) {
log(_LOADER_WARNING, "MESA-LOADER: invalid drm fd");
return FALSE;
}
if (!version->name) {
log(_LOADER_WARNING, "MESA-LOADER: unable to determine the driver name");
drmFreeVersion(version);
return FALSE;
}
if (strcmp(version->name, "i915") == 0) {
struct drm_i915_getparam gp;
int ret;
*vendor_id = 0x8086;
memset(&gp, 0, sizeof(gp));
gp.param = I915_PARAM_CHIPSET_ID;
gp.value = chip_id;
ret = drmCommandWriteRead(fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
if (ret) {
log(_LOADER_WARNING, "MESA-LOADER: failed to get param for i915");
*chip_id = -1;
}
}
else if (strcmp(version->name, "radeon") == 0) {
struct drm_radeon_info info;
int ret;
*vendor_id = 0x1002;
memset(&info, 0, sizeof(info));
info.request = RADEON_INFO_DEVICE_ID;
info.value = (unsigned long) chip_id;
ret = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
if (ret) {
log(_LOADER_WARNING, "MESA-LOADER: failed to get info for radeon");
*chip_id = -1;
}
}
else if (strcmp(version->name, "nouveau") == 0) {
*vendor_id = 0x10de;
/* not used */
*chip_id = 0;
}
else if (strcmp(version->name, "vmwgfx") == 0) {
*vendor_id = 0x15ad;
/* assume SVGA II */
*chip_id = 0x0405;
}
drmFreeVersion(version);
return (*chip_id >= 0);
}
#else
int
loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id)
{
return 0;
}
#endif
char *
loader_get_device_name_for_fd(int fd)
{
char *device_name = NULL;
#ifdef HAVE_LIBUDEV
struct udev *udev;
struct udev_device *device;
const char *const_device_name;
udev = udev_new();
device = udev_device_new_from_fd(udev, fd);
if (device == NULL)
return NULL;
const_device_name = udev_device_get_devnode(device);
if (!const_device_name)
goto out;
device_name = strdup(const_device_name);
out:
udev_device_unref(device);
udev_unref(udev);
#endif
return device_name;
}
char *
loader_get_driver_for_fd(int fd, unsigned driver_types)
{
int vendor_id, chip_id, i, j;
char *driver = NULL;
if (!driver_types)
driver_types = _LOADER_GALLIUM | _LOADER_DRI;
if (!loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) {
log(_LOADER_WARNING, "failed to get driver name for fd %d", fd);
return NULL;
}
for (i = 0; driver_map[i].driver; i++) {
if (vendor_id != driver_map[i].vendor_id)
continue;
if (!(driver_types & driver_map[i].driver_types))
continue;
if (driver_map[i].num_chips_ids == -1) {
driver = strdup(driver_map[i].driver);
goto out;
}
for (j = 0; j < driver_map[i].num_chips_ids; j++)
if (driver_map[i].chip_ids[j] == chip_id) {
driver = strdup(driver_map[i].driver);
goto out;
}
}
out:
log(driver ? _LOADER_INFO : _LOADER_WARNING,
"pci id for fd %d: %04x:%04x, driver %s",
fd, vendor_id, chip_id, driver);
return driver;
}
void
loader_set_logger(void (*logger)(int level, const char *fmt, ...))
{
log = logger;
}