linux/drivers/gpu/drm/qxl/qxl_draw.c
Dave Airlie 8002db6336 qxl: convert qxl driver to proper use for reservations
The recent addition of lockdep support to reservations and their subsequent
use by TTM showed up a number of potential problems with the way qxl was using
TTM objects.

a) it was allocating objects, and reserving them later without validating
underneath the reservation, which meant in extreme conditions the objects could
be evicted before the reservation ever used them.

b) it was reserving objects straight after allocating them, but with no
ability to back off should the reservations fail. It now allocates the necessary
objects then does a complete reservation pass on them to avoid deadlocks.

c) it had two lists per release tracking objects, unnecessary complicating
the reservation process.

This patch removes the dual object tracking, adds reservations ticket support
to the release and fence object handling. It then ports the internal fb
drawing code and the userspace facing ioctl to use the new interfaces properly,
along with cleanup up the error path handling in some codepaths.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-07-24 11:58:10 +10:00

488 lines
14 KiB
C

/*
* Copyright 2011 Red Hat, Inc.
*
* 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
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS 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.
*/
#include "qxl_drv.h"
#include "qxl_object.h"
static int alloc_clips(struct qxl_device *qdev,
struct qxl_release *release,
unsigned num_clips,
struct qxl_bo **clips_bo)
{
int size = sizeof(struct qxl_clip_rects) + sizeof(struct qxl_rect) * num_clips;
return qxl_alloc_bo_reserved(qdev, release, size, clips_bo);
}
/* returns a pointer to the already allocated qxl_rect array inside
* the qxl_clip_rects. This is *not* the same as the memory allocated
* on the device, it is offset to qxl_clip_rects.chunk.data */
static struct qxl_rect *drawable_set_clipping(struct qxl_device *qdev,
struct qxl_drawable *drawable,
unsigned num_clips,
struct qxl_bo *clips_bo)
{
struct qxl_clip_rects *dev_clips;
int ret;
ret = qxl_bo_kmap(clips_bo, (void **)&dev_clips);
if (ret) {
return NULL;
}
dev_clips->num_rects = num_clips;
dev_clips->chunk.next_chunk = 0;
dev_clips->chunk.prev_chunk = 0;
dev_clips->chunk.data_size = sizeof(struct qxl_rect) * num_clips;
return (struct qxl_rect *)dev_clips->chunk.data;
}
static int
alloc_drawable(struct qxl_device *qdev, struct qxl_release **release)
{
int ret;
ret = qxl_alloc_release_reserved(qdev, sizeof(struct qxl_drawable),
QXL_RELEASE_DRAWABLE, release,
NULL);
return ret;
}
static void
free_drawable(struct qxl_device *qdev, struct qxl_release *release)
{
qxl_release_free(qdev, release);
}
/* release needs to be reserved at this point */
static int
make_drawable(struct qxl_device *qdev, int surface, uint8_t type,
const struct qxl_rect *rect,
struct qxl_release *release)
{
struct qxl_drawable *drawable;
int i;
drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
if (!drawable)
return -ENOMEM;
drawable->type = type;
drawable->surface_id = surface; /* Only primary for now */
drawable->effect = QXL_EFFECT_OPAQUE;
drawable->self_bitmap = 0;
drawable->self_bitmap_area.top = 0;
drawable->self_bitmap_area.left = 0;
drawable->self_bitmap_area.bottom = 0;
drawable->self_bitmap_area.right = 0;
/* FIXME: add clipping */
drawable->clip.type = SPICE_CLIP_TYPE_NONE;
/*
* surfaces_dest[i] should apparently be filled out with the
* surfaces that we depend on, and surface_rects should be
* filled with the rectangles of those surfaces that we
* are going to use.
*/
for (i = 0; i < 3; ++i)
drawable->surfaces_dest[i] = -1;
if (rect)
drawable->bbox = *rect;
drawable->mm_time = qdev->rom->mm_clock;
qxl_release_unmap(qdev, release, &drawable->release_info);
return 0;
}
static int alloc_palette_object(struct qxl_device *qdev,
struct qxl_release *release,
struct qxl_bo **palette_bo)
{
return qxl_alloc_bo_reserved(qdev, release,
sizeof(struct qxl_palette) + sizeof(uint32_t) * 2,
palette_bo);
}
static int qxl_palette_create_1bit(struct qxl_bo *palette_bo,
struct qxl_release *release,
const struct qxl_fb_image *qxl_fb_image)
{
const struct fb_image *fb_image = &qxl_fb_image->fb_image;
uint32_t visual = qxl_fb_image->visual;
const uint32_t *pseudo_palette = qxl_fb_image->pseudo_palette;
struct qxl_palette *pal;
int ret;
uint32_t fgcolor, bgcolor;
static uint64_t unique; /* we make no attempt to actually set this
* correctly globaly, since that would require
* tracking all of our palettes. */
ret = qxl_bo_kmap(palette_bo, (void **)&pal);
pal->num_ents = 2;
pal->unique = unique++;
if (visual == FB_VISUAL_TRUECOLOR || visual == FB_VISUAL_DIRECTCOLOR) {
/* NB: this is the only used branch currently. */
fgcolor = pseudo_palette[fb_image->fg_color];
bgcolor = pseudo_palette[fb_image->bg_color];
} else {
fgcolor = fb_image->fg_color;
bgcolor = fb_image->bg_color;
}
pal->ents[0] = bgcolor;
pal->ents[1] = fgcolor;
qxl_bo_kunmap(palette_bo);
return 0;
}
void qxl_draw_opaque_fb(const struct qxl_fb_image *qxl_fb_image,
int stride /* filled in if 0 */)
{
struct qxl_device *qdev = qxl_fb_image->qdev;
struct qxl_drawable *drawable;
struct qxl_rect rect;
const struct fb_image *fb_image = &qxl_fb_image->fb_image;
int x = fb_image->dx;
int y = fb_image->dy;
int width = fb_image->width;
int height = fb_image->height;
const char *src = fb_image->data;
int depth = fb_image->depth;
struct qxl_release *release;
struct qxl_image *image;
int ret;
struct qxl_drm_image *dimage;
struct qxl_bo *palette_bo = NULL;
if (stride == 0)
stride = depth * width / 8;
ret = alloc_drawable(qdev, &release);
if (ret)
return;
ret = qxl_image_alloc_objects(qdev, release,
&dimage,
height, stride);
if (ret)
goto out_free_drawable;
if (depth == 1) {
ret = alloc_palette_object(qdev, release, &palette_bo);
if (ret)
goto out_free_image;
}
/* do a reservation run over all the objects we just allocated */
ret = qxl_release_reserve_list(release, true);
if (ret)
goto out_free_palette;
rect.left = x;
rect.right = x + width;
rect.top = y;
rect.bottom = y + height;
ret = make_drawable(qdev, 0, QXL_DRAW_COPY, &rect, release);
if (ret) {
qxl_release_backoff_reserve_list(release);
goto out_free_palette;
}
ret = qxl_image_init(qdev, release, dimage,
(const uint8_t *)src, 0, 0,
width, height, depth, stride);
if (ret) {
qxl_release_backoff_reserve_list(release);
qxl_release_free(qdev, release);
return;
}
if (depth == 1) {
void *ptr;
ret = qxl_palette_create_1bit(palette_bo, release, qxl_fb_image);
ptr = qxl_bo_kmap_atomic_page(qdev, dimage->bo, 0);
image = ptr;
image->u.bitmap.palette =
qxl_bo_physical_address(qdev, palette_bo, 0);
qxl_bo_kunmap_atomic_page(qdev, dimage->bo, ptr);
}
drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
drawable->u.copy.src_area.top = 0;
drawable->u.copy.src_area.bottom = height;
drawable->u.copy.src_area.left = 0;
drawable->u.copy.src_area.right = width;
drawable->u.copy.rop_descriptor = SPICE_ROPD_OP_PUT;
drawable->u.copy.scale_mode = 0;
drawable->u.copy.mask.flags = 0;
drawable->u.copy.mask.pos.x = 0;
drawable->u.copy.mask.pos.y = 0;
drawable->u.copy.mask.bitmap = 0;
drawable->u.copy.src_bitmap =
qxl_bo_physical_address(qdev, dimage->bo, 0);
qxl_release_unmap(qdev, release, &drawable->release_info);
qxl_push_command_ring_release(qdev, release, QXL_CMD_DRAW, false);
qxl_release_fence_buffer_objects(release);
out_free_palette:
if (palette_bo)
qxl_bo_unref(&palette_bo);
out_free_image:
qxl_image_free_objects(qdev, dimage);
out_free_drawable:
if (ret)
free_drawable(qdev, release);
}
/* push a draw command using the given clipping rectangles as
* the sources from the shadow framebuffer.
*
* Right now implementing with a single draw and a clip list. Clip
* lists are known to be a problem performance wise, this can be solved
* by treating them differently in the server.
*/
void qxl_draw_dirty_fb(struct qxl_device *qdev,
struct qxl_framebuffer *qxl_fb,
struct qxl_bo *bo,
unsigned flags, unsigned color,
struct drm_clip_rect *clips,
unsigned num_clips, int inc)
{
/*
* TODO: if flags & DRM_MODE_FB_DIRTY_ANNOTATE_FILL then we should
* send a fill command instead, much cheaper.
*
* See include/drm/drm_mode.h
*/
struct drm_clip_rect *clips_ptr;
int i;
int left, right, top, bottom;
int width, height;
struct qxl_drawable *drawable;
struct qxl_rect drawable_rect;
struct qxl_rect *rects;
int stride = qxl_fb->base.pitches[0];
/* depth is not actually interesting, we don't mask with it */
int depth = qxl_fb->base.bits_per_pixel;
uint8_t *surface_base;
struct qxl_release *release;
struct qxl_bo *clips_bo;
struct qxl_drm_image *dimage;
int ret;
ret = alloc_drawable(qdev, &release);
if (ret)
return;
left = clips->x1;
right = clips->x2;
top = clips->y1;
bottom = clips->y2;
/* skip the first clip rect */
for (i = 1, clips_ptr = clips + inc;
i < num_clips; i++, clips_ptr += inc) {
left = min_t(int, left, (int)clips_ptr->x1);
right = max_t(int, right, (int)clips_ptr->x2);
top = min_t(int, top, (int)clips_ptr->y1);
bottom = max_t(int, bottom, (int)clips_ptr->y2);
}
width = right - left;
height = bottom - top;
ret = alloc_clips(qdev, release, num_clips, &clips_bo);
if (ret)
goto out_free_drawable;
ret = qxl_image_alloc_objects(qdev, release,
&dimage,
height, stride);
if (ret)
goto out_free_clips;
/* do a reservation run over all the objects we just allocated */
ret = qxl_release_reserve_list(release, true);
if (ret)
goto out_free_image;
drawable_rect.left = left;
drawable_rect.right = right;
drawable_rect.top = top;
drawable_rect.bottom = bottom;
ret = make_drawable(qdev, 0, QXL_DRAW_COPY, &drawable_rect,
release);
if (ret)
goto out_release_backoff;
ret = qxl_bo_kmap(bo, (void **)&surface_base);
if (ret)
goto out_release_backoff;
ret = qxl_image_init(qdev, release, dimage, surface_base,
left, top, width, height, depth, stride);
qxl_bo_kunmap(bo);
if (ret)
goto out_release_backoff;
rects = drawable_set_clipping(qdev, drawable, num_clips, clips_bo);
if (!rects)
goto out_release_backoff;
drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
drawable->clip.type = SPICE_CLIP_TYPE_RECTS;
drawable->clip.data = qxl_bo_physical_address(qdev,
clips_bo, 0);
drawable->u.copy.src_area.top = 0;
drawable->u.copy.src_area.bottom = height;
drawable->u.copy.src_area.left = 0;
drawable->u.copy.src_area.right = width;
drawable->u.copy.rop_descriptor = SPICE_ROPD_OP_PUT;
drawable->u.copy.scale_mode = 0;
drawable->u.copy.mask.flags = 0;
drawable->u.copy.mask.pos.x = 0;
drawable->u.copy.mask.pos.y = 0;
drawable->u.copy.mask.bitmap = 0;
drawable->u.copy.src_bitmap = qxl_bo_physical_address(qdev, dimage->bo, 0);
qxl_release_unmap(qdev, release, &drawable->release_info);
clips_ptr = clips;
for (i = 0; i < num_clips; i++, clips_ptr += inc) {
rects[i].left = clips_ptr->x1;
rects[i].right = clips_ptr->x2;
rects[i].top = clips_ptr->y1;
rects[i].bottom = clips_ptr->y2;
}
qxl_bo_kunmap(clips_bo);
qxl_push_command_ring_release(qdev, release, QXL_CMD_DRAW, false);
qxl_release_fence_buffer_objects(release);
out_release_backoff:
if (ret)
qxl_release_backoff_reserve_list(release);
out_free_image:
qxl_image_free_objects(qdev, dimage);
out_free_clips:
qxl_bo_unref(&clips_bo);
out_free_drawable:
/* only free drawable on error */
if (ret)
free_drawable(qdev, release);
}
void qxl_draw_copyarea(struct qxl_device *qdev,
u32 width, u32 height,
u32 sx, u32 sy,
u32 dx, u32 dy)
{
struct qxl_drawable *drawable;
struct qxl_rect rect;
struct qxl_release *release;
int ret;
ret = alloc_drawable(qdev, &release);
if (ret)
return;
/* do a reservation run over all the objects we just allocated */
ret = qxl_release_reserve_list(release, true);
if (ret)
goto out_free_release;
rect.left = dx;
rect.top = dy;
rect.right = dx + width;
rect.bottom = dy + height;
ret = make_drawable(qdev, 0, QXL_COPY_BITS, &rect, release);
if (ret) {
qxl_release_backoff_reserve_list(release);
goto out_free_release;
}
drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
drawable->u.copy_bits.src_pos.x = sx;
drawable->u.copy_bits.src_pos.y = sy;
qxl_release_unmap(qdev, release, &drawable->release_info);
qxl_push_command_ring_release(qdev, release, QXL_CMD_DRAW, false);
qxl_release_fence_buffer_objects(release);
out_free_release:
if (ret)
free_drawable(qdev, release);
}
void qxl_draw_fill(struct qxl_draw_fill *qxl_draw_fill_rec)
{
struct qxl_device *qdev = qxl_draw_fill_rec->qdev;
struct qxl_rect rect = qxl_draw_fill_rec->rect;
uint32_t color = qxl_draw_fill_rec->color;
uint16_t rop = qxl_draw_fill_rec->rop;
struct qxl_drawable *drawable;
struct qxl_release *release;
int ret;
ret = alloc_drawable(qdev, &release);
if (ret)
return;
/* do a reservation run over all the objects we just allocated */
ret = qxl_release_reserve_list(release, true);
if (ret)
goto out_free_release;
ret = make_drawable(qdev, 0, QXL_DRAW_FILL, &rect, release);
if (ret) {
qxl_release_backoff_reserve_list(release);
goto out_free_release;
}
drawable = (struct qxl_drawable *)qxl_release_map(qdev, release);
drawable->u.fill.brush.type = SPICE_BRUSH_TYPE_SOLID;
drawable->u.fill.brush.u.color = color;
drawable->u.fill.rop_descriptor = rop;
drawable->u.fill.mask.flags = 0;
drawable->u.fill.mask.pos.x = 0;
drawable->u.fill.mask.pos.y = 0;
drawable->u.fill.mask.bitmap = 0;
qxl_release_unmap(qdev, release, &drawable->release_info);
qxl_push_command_ring_release(qdev, release, QXL_CMD_DRAW, false);
qxl_release_fence_buffer_objects(release);
out_free_release:
if (ret)
free_drawable(qdev, release);
}