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#define LOG_TAG "GRALLOC-I915"
#include <cutils/log.h>
#include <stdlib.h>
#include <errno.h>
#include <drm.h>
#include <intel_bufmgr.h>
#include <i915_drm.h>
#include "gralloc_mod.h"
#include "gralloc_gem.h"
static void
drm_gem_intel_init_features(struct drm_module_t *drm)
{
struct drm_i915_getparam gp;
drm_intel_bufmgr *bufmgr = (drm_intel_bufmgr *) drm->gem;
drm->mode_dirty_fb = 0;
memset(&gp, 0, sizeof(gp));
gp.param = I915_PARAM_HAS_PAGEFLIPPING;
gp.value = &drm->mode_page_flip;
if (!drmCommandWriteRead(drm->fd, DRM_I915_GETPARAM, &gp, sizeof(gp)))
drm->mode_page_flip = *gp.value;
else
drm->mode_page_flip = 0;
drm->mode_page_flip_blocking = 0;
if (drm->resources) {
int pipe;
pipe = drm_intel_get_pipe_from_crtc_id(bufmgr, drm->crtc_id);
drm->swap_interval = (pipe >= 0) ? 1 : 0;
drm->vblank_secondary = (pipe > 0);
}
else {
drm->swap_interval = 0;
}
/* XXX there is a bug in the kernel module */
drm->mode_page_flip = 0;
}
static int
drm_gem_intel_init(struct drm_module_t *drm)
{
drm->gem = (void *) drm_intel_bufmgr_gem_init(drm->fd, 16 * 1024);
if (!drm->gem) {
LOGE("failed to create buffer manager");
return -ENOMEM;
}
drm_gem_intel_init_features(drm);
return 0;
}
static uint32_t
drm_gem_get_tiling(struct drm_bo_t *bo)
{
uint32_t tiling = I915_TILING_NONE;
if (bo->usage & GRALLOC_USAGE_SW_READ_OFTEN)
return tiling;
if (bo->usage & GRALLOC_USAGE_HW_FB ||
bo->usage & GRALLOC_USAGE_HW_TEXTURE) {
if (bo->width >= 64)
tiling = I915_TILING_X;
}
return tiling;
}
static struct drm_bo_t *
drm_gem_intel_alloc(struct drm_module_t *drm, int width, int height,
int format, int usage, int *stride)
{
drm_intel_bufmgr *bufmgr = (drm_intel_bufmgr *) drm->gem;
struct drm_bo_t *bo;
drm_intel_bo *ibo;
int aligned_width, aligned_height, cpp;
unsigned long pitch, flags;
uint32_t tiling;
const char *name;
bo = drm_gem_create_bo(width, height, format, usage);
if (!bo)
return NULL;
cpp = drm_mod_get_bpp(format);
if (!cpp) {
LOGE("unrecognized format 0x%x", format);
free(bo);
return NULL;
}
if (usage & GRALLOC_USAGE_HW_FB) {
name = "gralloc-fb";
aligned_width = (width + 63) & ~63;
}
if (usage & GRALLOC_USAGE_HW_TEXTURE) {
name = "gralloc-texture";
aligned_width = (width + 3) & ~3;
aligned_height = (height + 1) & ~1;
}
else {
name = "gralloc-buf";
aligned_width = width;
aligned_height = height;
}
tiling = drm_gem_get_tiling(bo);
flags = 0x0;
if (bo->usage & (GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_FB))
flags |= BO_ALLOC_FOR_RENDER;
ibo = drm_intel_bo_alloc_tiled(bufmgr, name,
aligned_width, aligned_height, cpp, &tiling, &pitch, flags);
if (!ibo) {
LOGE("failed to allocate ibo %dx%dx%d", width, height, cpp);
free(bo);
return NULL;
}
if (bo->usage & GRALLOC_USAGE_HW_FB) {
drm_intel_bo_disable_reuse(ibo);
bo->stride = pitch;
bo->fb_handle = ibo->handle;
}
if (drm_intel_bo_flink(ibo, (uint32_t *) &bo->name)) {
LOGE("failed to flink ibo");
drm_intel_bo_unreference(ibo);
free(bo);
return NULL;
}
bo->data = (int) ibo;
*stride = pitch;
return bo;
}
static void
drm_gem_intel_free(struct drm_module_t *drm, struct drm_bo_t *bo)
{
drm_intel_bo_unreference((drm_intel_bo *) bo->data);
free(bo);
}
static int
drm_gem_intel_map(struct drm_module_t *drm, struct drm_bo_t *bo,
int x, int y, int w, int h, int enable_write, void **addr)
{
drm_intel_bo *ibo = (drm_intel_bo *) bo->data;
int err;
if (!ibo) {
drm_intel_bufmgr *bufmgr = (drm_intel_bufmgr *) drm->gem;
ibo = drm_intel_bo_gem_create_from_name(bufmgr, "gralloc-r", bo->name);
if (!ibo) {
LOGE("failed to create ibo from name %u", bo->name);
return -EINVAL;
}
bo->data = (int) ibo;
}
if ((bo->usage & GRALLOC_USAGE_HW_FB) ||
drm_gem_get_tiling(bo) != I915_TILING_NONE)
err = drm_intel_gem_bo_map_gtt(ibo);
else
err = drm_intel_bo_map(ibo, enable_write);
if (!err)
*addr = ibo->virtual;
return err;
}
static void
drm_gem_intel_unmap(struct drm_module_t *drm, struct drm_bo_t *bo)
{
drm_intel_bo *ibo = (drm_intel_bo *) bo->data;
if ((bo->usage & GRALLOC_USAGE_HW_FB) ||
drm_gem_get_tiling(bo) != I915_TILING_NONE)
drm_intel_gem_bo_unmap_gtt(ibo);
else
drm_intel_bo_unmap(ibo);
}
const struct drm_gem_drv drm_gem_drv_intel = {
.init = drm_gem_intel_init,
.alloc = drm_gem_intel_alloc,
.free = drm_gem_intel_free,
.map = drm_gem_intel_map,
.unmap = drm_gem_intel_unmap,
};
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