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/*
* Copyright © 2007, 2011 Intel Corporation
*
* 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:
* Eric Anholt <eric@anholt.net>
* Daniel Vetter <daniel.vetter@ffwll.ch>
*
*/
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <string.h>
#include "drmtest.h"
#include "i915_drm.h"
#include "intel_chipset.h"
/* This file contains a bunch of wrapper functions to directly use gem ioctls.
* Mostly useful to write kernel tests. */
static int
is_intel(int fd)
{
struct drm_i915_getparam gp;
int devid;
gp.param = I915_PARAM_CHIPSET_ID;
gp.value = &devid;
if (ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp, sizeof(gp)))
return 0;
return IS_INTEL(devid);
}
/** Open the first DRM device we can find, searching up to 16 device nodes */
int drm_open_any(void)
{
char name[20];
int i, fd;
for (i = 0; i < 16; i++) {
sprintf(name, "/dev/dri/card%d", i);
fd = open(name, O_RDWR);
if (fd == -1)
continue;
if (is_intel(fd))
return fd;
close(fd);
}
fprintf(stderr, "failed to open any drm device. retry as root?\n");
abort();
}
/**
* Open the first DRM device we can find where we end up being the master.
*/
int drm_open_any_master(void)
{
char name[20];
int i, fd;
for (i = 0; i < 16; i++) {
drm_client_t client;
int ret;
sprintf(name, "/dev/dri/card%d", i);
fd = open(name, O_RDWR);
if (fd == -1)
continue;
if (!is_intel(fd)) {
close(fd);
continue;
}
/* Check that we're the only opener and authed. */
client.idx = 0;
ret = ioctl(fd, DRM_IOCTL_GET_CLIENT, &client);
assert (ret == 0);
if (!client.auth) {
close(fd);
continue;
}
client.idx = 1;
ret = ioctl(fd, DRM_IOCTL_GET_CLIENT, &client);
if (ret != -1 || errno != EINVAL) {
close(fd);
continue;
}
return fd;
}
fprintf(stderr, "Couldn't find an un-controlled DRM device\n");
abort();
}
void gem_set_tiling(int fd, uint32_t handle, int tiling, int stride)
{
struct drm_i915_gem_set_tiling st;
int ret;
memset(&st, 0, sizeof(st));
do {
st.handle = handle;
st.tiling_mode = tiling;
st.stride = tiling ? stride : 0;
ret = ioctl(fd, DRM_IOCTL_I915_GEM_SET_TILING, &st);
} while (ret == -1 && (errno == EINTR || errno == EAGAIN));
assert(ret == 0);
assert(st.tiling_mode == tiling);
}
void gem_close(int fd, uint32_t handle)
{
struct drm_gem_close close_bo;
int ret;
close_bo.handle = handle;
ret = drmIoctl(fd, DRM_IOCTL_GEM_CLOSE, &close_bo);
assert(ret == 0);
}
void gem_write(int fd, uint32_t handle, uint32_t offset, const void *buf, uint32_t size)
{
struct drm_i915_gem_pwrite gem_pwrite;
int ret;
gem_pwrite.handle = handle;
gem_pwrite.offset = offset;
gem_pwrite.size = size;
gem_pwrite.data_ptr = (uintptr_t)buf;
ret = drmIoctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &gem_pwrite);
assert(ret == 0);
}
void gem_read(int fd, uint32_t handle, uint32_t offset, void *buf, uint32_t length)
{
struct drm_i915_gem_pread gem_pread;
int ret;
gem_pread.handle = handle;
gem_pread.offset = offset;
gem_pread.size = length;
gem_pread.data_ptr = (uintptr_t)buf;
ret = drmIoctl(fd, DRM_IOCTL_I915_GEM_PREAD, &gem_pread);
assert(ret == 0);
}
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