blob: 769e6a33c67eb8aa7fff70ae7028aae73df8af90 [file] [log] [blame]
/*
* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifdef DRV_I915
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <sys/mman.h>
#include <xf86drm.h>
#include <i915_drm.h>
#include "drv_priv.h"
#include "helpers.h"
#include "util.h"
static struct supported_combination combos[18] = {
{DRM_FORMAT_ARGB1555, DRM_FORMAT_MOD_NONE,
BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
{DRM_FORMAT_ABGR8888, DRM_FORMAT_MOD_NONE,
BO_USE_RENDERING | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN},
{DRM_FORMAT_ABGR8888, DRM_FORMAT_MOD_NONE,
BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
{DRM_FORMAT_ARGB8888, DRM_FORMAT_MOD_NONE,
BO_USE_CURSOR | BO_USE_LINEAR | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN},
{DRM_FORMAT_ARGB8888, DRM_FORMAT_MOD_NONE,
BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
{DRM_FORMAT_GR88, DRM_FORMAT_MOD_NONE,
BO_USE_LINEAR | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN},
{DRM_FORMAT_R8, DRM_FORMAT_MOD_NONE,
BO_USE_LINEAR | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN},
{DRM_FORMAT_RGB565, DRM_FORMAT_MOD_NONE,
BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
{DRM_FORMAT_UYVY, DRM_FORMAT_MOD_NONE,
BO_USE_LINEAR | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN},
{DRM_FORMAT_UYVY, DRM_FORMAT_MOD_NONE,
BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
{DRM_FORMAT_XBGR8888, DRM_FORMAT_MOD_NONE,
BO_USE_RENDERING | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN},
{DRM_FORMAT_XBGR8888, DRM_FORMAT_MOD_NONE,
BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
{DRM_FORMAT_XRGB1555, DRM_FORMAT_MOD_NONE,
BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
{DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_NONE,
BO_USE_CURSOR | BO_USE_LINEAR | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN},
{DRM_FORMAT_XRGB8888, DRM_FORMAT_MOD_NONE,
BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
{DRM_FORMAT_YUYV, DRM_FORMAT_MOD_NONE,
BO_USE_LINEAR | BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN},
{DRM_FORMAT_YUYV, DRM_FORMAT_MOD_NONE,
BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
{DRM_FORMAT_YVU420, DRM_FORMAT_MOD_NONE,
BO_USE_RENDERING | BO_USE_SW_READ_RARELY | BO_USE_SW_WRITE_RARELY},
};
struct i915_device
{
int gen;
};
static int get_gen(int device_id)
{
const uint16_t gen3_ids[] = {0x2582, 0x2592, 0x2772, 0x27A2, 0x27AE,
0x29C2, 0x29B2, 0x29D2, 0xA001, 0xA011};
unsigned i;
for(i = 0; i < ARRAY_SIZE(gen3_ids); i++)
if (gen3_ids[i] == device_id)
return 3;
return 4;
}
static int i915_init(struct driver *drv)
{
struct i915_device *i915_drv;
drm_i915_getparam_t get_param;
int device_id;
int ret;
i915_drv = (struct i915_device*)malloc(sizeof(*i915_drv));
if (!i915_drv)
return -1;
memset(&get_param, 0, sizeof(get_param));
get_param.param = I915_PARAM_CHIPSET_ID;
get_param.value = &device_id;
ret = drmIoctl(drv->fd, DRM_IOCTL_I915_GETPARAM, &get_param);
if (ret) {
fprintf(stderr, "drv: DRM_IOCTL_I915_GETPARAM failed\n");
free(i915_drv);
return -1;
}
i915_drv->gen = get_gen(device_id);
drv->priv = i915_drv;
drv_insert_combinations(drv, combos, ARRAY_SIZE(combos));
return drv_add_kms_flags(drv);
}
static void i915_close(struct driver *drv)
{
free(drv->priv);
drv->priv = NULL;
}
static void i915_align_dimensions(struct driver *drv, uint32_t tiling_mode,
uint32_t *width, uint32_t *height, int bpp)
{
struct i915_device *i915_drv = (struct i915_device *)drv->priv;
uint32_t width_alignment = 4, height_alignment = 4;
switch (tiling_mode) {
default:
case I915_TILING_NONE:
width_alignment = 64 / bpp;
break;
case I915_TILING_X:
width_alignment = 512 / bpp;
height_alignment = 8;
break;
case I915_TILING_Y:
if (i915_drv->gen == 3) {
width_alignment = 512 / bpp;
height_alignment = 8;
} else {
width_alignment = 128 / bpp;
height_alignment = 32;
}
break;
}
if (i915_drv->gen > 3) {
*width = ALIGN(*width, width_alignment);
*height = ALIGN(*height, height_alignment);
} else {
uint32_t w;
for (w = width_alignment; w < *width; w <<= 1)
;
*width = w;
*height = ALIGN(*height, height_alignment);
}
}
static int i915_verify_dimensions(struct driver *drv, uint32_t stride,
uint32_t height)
{
struct i915_device *i915_drv = (struct i915_device *)drv->priv;
if (i915_drv->gen <= 3 && stride > 8192)
return 0;
return 1;
}
static int i915_bo_create(struct bo *bo, uint32_t width, uint32_t height,
uint32_t format, uint32_t flags)
{
struct driver *drv = bo->drv;
int bpp = drv_stride_from_format(format, 1, 0);
struct drm_i915_gem_create gem_create;
struct drm_i915_gem_set_tiling gem_set_tiling;
uint32_t tiling_mode = I915_TILING_NONE;
size_t plane;
int ret;
if (flags & (BO_USE_CURSOR | BO_USE_LINEAR |
BO_USE_SW_READ_OFTEN | BO_USE_SW_WRITE_OFTEN))
tiling_mode = I915_TILING_NONE;
else if (flags & BO_USE_SCANOUT)
tiling_mode = I915_TILING_X;
else
tiling_mode = I915_TILING_Y;
i915_align_dimensions(drv, tiling_mode, &width, &height, bpp);
drv_bo_from_format(bo, width, height, format);
if (!i915_verify_dimensions(drv, bo->strides[0], height))
return EINVAL;
memset(&gem_create, 0, sizeof(gem_create));
gem_create.size = bo->total_size;
ret = drmIoctl(drv->fd, DRM_IOCTL_I915_GEM_CREATE, &gem_create);
if (ret) {
fprintf(stderr, "drv: DRM_IOCTL_I915_GEM_CREATE failed "
"(size=%llu)\n", gem_create.size);
return ret;
}
for (plane = 0; plane < bo->num_planes; plane++)
bo->handles[plane].u32 = gem_create.handle;
memset(&gem_set_tiling, 0, sizeof(gem_set_tiling));
do {
gem_set_tiling.handle = bo->handles[0].u32;
gem_set_tiling.tiling_mode = tiling_mode;
gem_set_tiling.stride = bo->strides[0];
ret = drmIoctl(drv->fd, DRM_IOCTL_I915_GEM_SET_TILING,
&gem_set_tiling);
} while (ret == -1 && (errno == EINTR || errno == EAGAIN));
if (ret == -1) {
struct drm_gem_close gem_close;
gem_close.handle = bo->handles[0].u32;
fprintf(stderr, "drv: DRM_IOCTL_I915_GEM_SET_TILING failed "
"errno=%x (handle=%x, tiling=%x, stride=%x)\n",
errno,
gem_set_tiling.handle,
gem_set_tiling.tiling_mode,
gem_set_tiling.stride);
drmIoctl(drv->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
return -errno;
}
return 0;
}
static void *i915_bo_map(struct bo *bo, struct map_info *data, size_t plane)
{
int ret;
struct drm_i915_gem_mmap_gtt gem_map;
memset(&gem_map, 0, sizeof(gem_map));
gem_map.handle = bo->handles[0].u32;
ret = drmIoctl(bo->drv->fd, DRM_IOCTL_I915_GEM_MMAP_GTT, &gem_map);
if (ret) {
fprintf(stderr, "drv: DRM_IOCTL_I915_GEM_MMAP_GTT failed\n");
return MAP_FAILED;
}
data->length = bo->total_size;
return mmap(0, bo->total_size, PROT_READ | PROT_WRITE, MAP_SHARED,
bo->drv->fd, gem_map.offset);
}
static uint32_t i915_resolve_format(uint32_t format)
{
switch (format) {
case DRM_FORMAT_FLEX_IMPLEMENTATION_DEFINED:
/*HACK: See b/28671744 */
return DRM_FORMAT_XBGR8888;
case DRM_FORMAT_FLEX_YCbCr_420_888:
return DRM_FORMAT_YVU420;
default:
return format;
}
}
struct backend backend_i915 =
{
.name = "i915",
.init = i915_init,
.close = i915_close,
.bo_create = i915_bo_create,
.bo_destroy = drv_gem_bo_destroy,
.bo_map = i915_bo_map,
.resolve_format = i915_resolve_format,
};
#endif