252 lines
6.5 KiB
C
252 lines
6.5 KiB
C
/*
|
|
* Copyright (C) 2013 Red Hat
|
|
* Author: Rob Clark <robdclark@gmail.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 as published by
|
|
* the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <drm/drm_crtc.h>
|
|
#include <drm/drm_crtc_helper.h>
|
|
#include <drm/drm_gem_framebuffer_helper.h>
|
|
|
|
#include "msm_drv.h"
|
|
#include "msm_kms.h"
|
|
#include "msm_gem.h"
|
|
|
|
struct msm_framebuffer {
|
|
struct drm_framebuffer base;
|
|
const struct msm_format *format;
|
|
};
|
|
#define to_msm_framebuffer(x) container_of(x, struct msm_framebuffer, base)
|
|
|
|
static struct drm_framebuffer *msm_framebuffer_init(struct drm_device *dev,
|
|
const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos);
|
|
|
|
static const struct drm_framebuffer_funcs msm_framebuffer_funcs = {
|
|
.create_handle = drm_gem_fb_create_handle,
|
|
.destroy = drm_gem_fb_destroy,
|
|
};
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
void msm_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m)
|
|
{
|
|
int i, n = fb->format->num_planes;
|
|
|
|
seq_printf(m, "fb: %dx%d@%4.4s (%2d, ID:%d)\n",
|
|
fb->width, fb->height, (char *)&fb->format->format,
|
|
drm_framebuffer_read_refcount(fb), fb->base.id);
|
|
|
|
for (i = 0; i < n; i++) {
|
|
seq_printf(m, " %d: offset=%d pitch=%d, obj: ",
|
|
i, fb->offsets[i], fb->pitches[i]);
|
|
msm_gem_describe(fb->obj[i], m);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* prepare/pin all the fb's bo's for scanout. Note that it is not valid
|
|
* to prepare an fb more multiple different initiator 'id's. But that
|
|
* should be fine, since only the scanout (mdpN) side of things needs
|
|
* this, the gpu doesn't care about fb's.
|
|
*/
|
|
int msm_framebuffer_prepare(struct drm_framebuffer *fb,
|
|
struct msm_gem_address_space *aspace)
|
|
{
|
|
int ret, i, n = fb->format->num_planes;
|
|
uint64_t iova;
|
|
|
|
for (i = 0; i < n; i++) {
|
|
ret = msm_gem_get_iova(fb->obj[i], aspace, &iova);
|
|
DBG("FB[%u]: iova[%d]: %08llx (%d)", fb->base.id, i, iova, ret);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void msm_framebuffer_cleanup(struct drm_framebuffer *fb,
|
|
struct msm_gem_address_space *aspace)
|
|
{
|
|
int i, n = fb->format->num_planes;
|
|
|
|
for (i = 0; i < n; i++)
|
|
msm_gem_put_iova(fb->obj[i], aspace);
|
|
}
|
|
|
|
uint32_t msm_framebuffer_iova(struct drm_framebuffer *fb,
|
|
struct msm_gem_address_space *aspace, int plane)
|
|
{
|
|
if (!fb->obj[plane])
|
|
return 0;
|
|
return msm_gem_iova(fb->obj[plane], aspace) + fb->offsets[plane];
|
|
}
|
|
|
|
struct drm_gem_object *msm_framebuffer_bo(struct drm_framebuffer *fb, int plane)
|
|
{
|
|
return drm_gem_fb_get_obj(fb, plane);
|
|
}
|
|
|
|
const struct msm_format *msm_framebuffer_format(struct drm_framebuffer *fb)
|
|
{
|
|
struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
|
|
return msm_fb->format;
|
|
}
|
|
|
|
struct drm_framebuffer *msm_framebuffer_create(struct drm_device *dev,
|
|
struct drm_file *file, const struct drm_mode_fb_cmd2 *mode_cmd)
|
|
{
|
|
struct drm_gem_object *bos[4] = {0};
|
|
struct drm_framebuffer *fb;
|
|
int ret, i, n = drm_format_num_planes(mode_cmd->pixel_format);
|
|
|
|
for (i = 0; i < n; i++) {
|
|
bos[i] = drm_gem_object_lookup(file, mode_cmd->handles[i]);
|
|
if (!bos[i]) {
|
|
ret = -ENXIO;
|
|
goto out_unref;
|
|
}
|
|
}
|
|
|
|
fb = msm_framebuffer_init(dev, mode_cmd, bos);
|
|
if (IS_ERR(fb)) {
|
|
ret = PTR_ERR(fb);
|
|
goto out_unref;
|
|
}
|
|
|
|
return fb;
|
|
|
|
out_unref:
|
|
for (i = 0; i < n; i++)
|
|
drm_gem_object_put_unlocked(bos[i]);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
static struct drm_framebuffer *msm_framebuffer_init(struct drm_device *dev,
|
|
const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos)
|
|
{
|
|
struct msm_drm_private *priv = dev->dev_private;
|
|
struct msm_kms *kms = priv->kms;
|
|
struct msm_framebuffer *msm_fb = NULL;
|
|
struct drm_framebuffer *fb;
|
|
const struct msm_format *format;
|
|
int ret, i, n;
|
|
unsigned int hsub, vsub;
|
|
|
|
DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)",
|
|
dev, mode_cmd, mode_cmd->width, mode_cmd->height,
|
|
(char *)&mode_cmd->pixel_format);
|
|
|
|
n = drm_format_num_planes(mode_cmd->pixel_format);
|
|
hsub = drm_format_horz_chroma_subsampling(mode_cmd->pixel_format);
|
|
vsub = drm_format_vert_chroma_subsampling(mode_cmd->pixel_format);
|
|
|
|
format = kms->funcs->get_format(kms, mode_cmd->pixel_format,
|
|
mode_cmd->modifier[0]);
|
|
if (!format) {
|
|
dev_err(dev->dev, "unsupported pixel format: %4.4s\n",
|
|
(char *)&mode_cmd->pixel_format);
|
|
ret = -EINVAL;
|
|
goto fail;
|
|
}
|
|
|
|
msm_fb = kzalloc(sizeof(*msm_fb), GFP_KERNEL);
|
|
if (!msm_fb) {
|
|
ret = -ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
fb = &msm_fb->base;
|
|
|
|
msm_fb->format = format;
|
|
|
|
if (n > ARRAY_SIZE(fb->obj)) {
|
|
ret = -EINVAL;
|
|
goto fail;
|
|
}
|
|
|
|
for (i = 0; i < n; i++) {
|
|
unsigned int width = mode_cmd->width / (i ? hsub : 1);
|
|
unsigned int height = mode_cmd->height / (i ? vsub : 1);
|
|
unsigned int min_size;
|
|
|
|
min_size = (height - 1) * mode_cmd->pitches[i]
|
|
+ width * drm_format_plane_cpp(mode_cmd->pixel_format, i)
|
|
+ mode_cmd->offsets[i];
|
|
|
|
if (bos[i]->size < min_size) {
|
|
ret = -EINVAL;
|
|
goto fail;
|
|
}
|
|
|
|
msm_fb->base.obj[i] = bos[i];
|
|
}
|
|
|
|
drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
|
|
|
|
ret = drm_framebuffer_init(dev, fb, &msm_framebuffer_funcs);
|
|
if (ret) {
|
|
dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
|
|
goto fail;
|
|
}
|
|
|
|
DBG("create: FB ID: %d (%p)", fb->base.id, fb);
|
|
|
|
return fb;
|
|
|
|
fail:
|
|
kfree(msm_fb);
|
|
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
struct drm_framebuffer *
|
|
msm_alloc_stolen_fb(struct drm_device *dev, int w, int h, int p, uint32_t format)
|
|
{
|
|
struct drm_mode_fb_cmd2 mode_cmd = {
|
|
.pixel_format = format,
|
|
.width = w,
|
|
.height = h,
|
|
.pitches = { p },
|
|
};
|
|
struct drm_gem_object *bo;
|
|
struct drm_framebuffer *fb;
|
|
int size;
|
|
|
|
/* allocate backing bo */
|
|
size = mode_cmd.pitches[0] * mode_cmd.height;
|
|
DBG("allocating %d bytes for fb %d", size, dev->primary->index);
|
|
bo = msm_gem_new(dev, size, MSM_BO_SCANOUT | MSM_BO_WC | MSM_BO_STOLEN);
|
|
if (IS_ERR(bo)) {
|
|
dev_warn(dev->dev, "could not allocate stolen bo\n");
|
|
/* try regular bo: */
|
|
bo = msm_gem_new(dev, size, MSM_BO_SCANOUT | MSM_BO_WC);
|
|
}
|
|
if (IS_ERR(bo)) {
|
|
dev_err(dev->dev, "failed to allocate buffer object\n");
|
|
return ERR_CAST(bo);
|
|
}
|
|
|
|
fb = msm_framebuffer_init(dev, &mode_cmd, &bo);
|
|
if (IS_ERR(fb)) {
|
|
dev_err(dev->dev, "failed to allocate fb\n");
|
|
/* note: if fb creation failed, we can't rely on fb destroy
|
|
* to unref the bo:
|
|
*/
|
|
drm_gem_object_put_unlocked(bo);
|
|
return ERR_CAST(fb);
|
|
}
|
|
|
|
return fb;
|
|
}
|