blob: 13926ff192e3d6ce55b0e741ef66a04c9377596b [file] [log] [blame]
/**************************************************************************
*
* Copyright © 2011-2015 VMware, Inc., Palo Alto, CA., USA
* All Rights Reserved.
*
* 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, 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 COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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 "vmwgfx_kms.h"
#include <drm/drm_plane_helper.h>
#define vmw_crtc_to_sou(x) \
container_of(x, struct vmw_screen_object_unit, base.crtc)
#define vmw_encoder_to_sou(x) \
container_of(x, struct vmw_screen_object_unit, base.encoder)
#define vmw_connector_to_sou(x) \
container_of(x, struct vmw_screen_object_unit, base.connector)
/**
* struct vmw_kms_sou_surface_dirty - Closure structure for
* blit surface to screen command.
* @base: The base type we derive from. Used by vmw_kms_helper_dirty().
* @left: Left side of bounding box.
* @right: Right side of bounding box.
* @top: Top side of bounding box.
* @bottom: Bottom side of bounding box.
* @dst_x: Difference between source clip rects and framebuffer coordinates.
* @dst_y: Difference between source clip rects and framebuffer coordinates.
* @sid: Surface id of surface to copy from.
*/
struct vmw_kms_sou_surface_dirty {
struct vmw_kms_dirty base;
s32 left, right, top, bottom;
s32 dst_x, dst_y;
u32 sid;
};
/*
* SVGA commands that are used by this code. Please see the device headers
* for explanation.
*/
struct vmw_kms_sou_readback_blit {
uint32 header;
SVGAFifoCmdBlitScreenToGMRFB body;
};
struct vmw_kms_sou_dmabuf_blit {
uint32 header;
SVGAFifoCmdBlitGMRFBToScreen body;
};
struct vmw_kms_sou_dirty_cmd {
SVGA3dCmdHeader header;
SVGA3dCmdBlitSurfaceToScreen body;
};
/*
* Other structs.
*/
struct vmw_screen_object_display {
unsigned num_implicit;
struct vmw_framebuffer *implicit_fb;
SVGAFifoCmdDefineGMRFB cur;
struct vmw_dma_buffer *pinned_gmrfb;
};
/**
* Display unit using screen objects.
*/
struct vmw_screen_object_unit {
struct vmw_display_unit base;
unsigned long buffer_size; /**< Size of allocated buffer */
struct vmw_dma_buffer *buffer; /**< Backing store buffer */
bool defined;
bool active_implicit;
};
static void vmw_sou_destroy(struct vmw_screen_object_unit *sou)
{
vmw_du_cleanup(&sou->base);
kfree(sou);
}
/*
* Screen Object Display Unit CRTC functions
*/
static void vmw_sou_crtc_destroy(struct drm_crtc *crtc)
{
vmw_sou_destroy(vmw_crtc_to_sou(crtc));
}
static void vmw_sou_del_active(struct vmw_private *vmw_priv,
struct vmw_screen_object_unit *sou)
{
struct vmw_screen_object_display *ld = vmw_priv->sou_priv;
if (sou->active_implicit) {
if (--(ld->num_implicit) == 0)
ld->implicit_fb = NULL;
sou->active_implicit = false;
}
}
static void vmw_sou_add_active(struct vmw_private *vmw_priv,
struct vmw_screen_object_unit *sou,
struct vmw_framebuffer *vfb)
{
struct vmw_screen_object_display *ld = vmw_priv->sou_priv;
BUG_ON(!ld->num_implicit && ld->implicit_fb);
if (!sou->active_implicit && sou->base.is_implicit) {
ld->implicit_fb = vfb;
sou->active_implicit = true;
ld->num_implicit++;
}
}
/**
* Send the fifo command to create a screen.
*/
static int vmw_sou_fifo_create(struct vmw_private *dev_priv,
struct vmw_screen_object_unit *sou,
uint32_t x, uint32_t y,
struct drm_display_mode *mode)
{
size_t fifo_size;
struct {
struct {
uint32_t cmdType;
} header;
SVGAScreenObject obj;
} *cmd;
BUG_ON(!sou->buffer);
fifo_size = sizeof(*cmd);
cmd = vmw_fifo_reserve(dev_priv, fifo_size);
/* The hardware has hung, nothing we can do about it here. */
if (unlikely(cmd == NULL)) {
DRM_ERROR("Fifo reserve failed.\n");
return -ENOMEM;
}
memset(cmd, 0, fifo_size);
cmd->header.cmdType = SVGA_CMD_DEFINE_SCREEN;
cmd->obj.structSize = sizeof(SVGAScreenObject);
cmd->obj.id = sou->base.unit;
cmd->obj.flags = SVGA_SCREEN_HAS_ROOT |
(sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0);
cmd->obj.size.width = mode->hdisplay;
cmd->obj.size.height = mode->vdisplay;
if (sou->base.is_implicit) {
cmd->obj.root.x = x;
cmd->obj.root.y = y;
} else {
cmd->obj.root.x = sou->base.gui_x;
cmd->obj.root.y = sou->base.gui_y;
}
/* Ok to assume that buffer is pinned in vram */
vmw_bo_get_guest_ptr(&sou->buffer->base, &cmd->obj.backingStore.ptr);
cmd->obj.backingStore.pitch = mode->hdisplay * 4;
vmw_fifo_commit(dev_priv, fifo_size);
sou->defined = true;
return 0;
}
/**
* Send the fifo command to destroy a screen.
*/
static int vmw_sou_fifo_destroy(struct vmw_private *dev_priv,
struct vmw_screen_object_unit *sou)
{
size_t fifo_size;
int ret;
struct {
struct {
uint32_t cmdType;
} header;
SVGAFifoCmdDestroyScreen body;
} *cmd;
/* no need to do anything */
if (unlikely(!sou->defined))
return 0;
fifo_size = sizeof(*cmd);
cmd = vmw_fifo_reserve(dev_priv, fifo_size);
/* the hardware has hung, nothing we can do about it here */
if (unlikely(cmd == NULL)) {
DRM_ERROR("Fifo reserve failed.\n");
return -ENOMEM;
}
memset(cmd, 0, fifo_size);
cmd->header.cmdType = SVGA_CMD_DESTROY_SCREEN;
cmd->body.screenId = sou->base.unit;
vmw_fifo_commit(dev_priv, fifo_size);
/* Force sync */
ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ);
if (unlikely(ret != 0))
DRM_ERROR("Failed to sync with HW");
else
sou->defined = false;
return ret;
}
/**
* Free the backing store.
*/
static void vmw_sou_backing_free(struct vmw_private *dev_priv,
struct vmw_screen_object_unit *sou)
{
vmw_dmabuf_unreference(&sou->buffer);
sou->buffer_size = 0;
}
/**
* Allocate the backing store for the buffer.
*/
static int vmw_sou_backing_alloc(struct vmw_private *dev_priv,
struct vmw_screen_object_unit *sou,
unsigned long size)
{
int ret;
if (sou->buffer_size == size)
return 0;
if (sou->buffer)
vmw_sou_backing_free(dev_priv, sou);
sou->buffer = kzalloc(sizeof(*sou->buffer), GFP_KERNEL);
if (unlikely(sou->buffer == NULL))
return -ENOMEM;
/* After we have alloced the backing store might not be able to
* resume the overlays, this is preferred to failing to alloc.
*/
vmw_overlay_pause_all(dev_priv);
ret = vmw_dmabuf_init(dev_priv, sou->buffer, size,
&vmw_vram_ne_placement,
false, &vmw_dmabuf_bo_free);
vmw_overlay_resume_all(dev_priv);
if (unlikely(ret != 0))
sou->buffer = NULL; /* vmw_dmabuf_init frees on error */
else
sou->buffer_size = size;
return ret;
}
static int vmw_sou_crtc_set_config(struct drm_mode_set *set)
{
struct vmw_private *dev_priv;
struct vmw_screen_object_unit *sou;
struct drm_connector *connector;
struct drm_display_mode *mode;
struct drm_encoder *encoder;
struct vmw_framebuffer *vfb;
struct drm_framebuffer *fb;
struct drm_crtc *crtc;
int ret = 0;
if (!set)
return -EINVAL;
if (!set->crtc)
return -EINVAL;
/* get the sou */
crtc = set->crtc;
sou = vmw_crtc_to_sou(crtc);
vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
dev_priv = vmw_priv(crtc->dev);
if (set->num_connectors > 1) {
DRM_ERROR("Too many connectors\n");
return -EINVAL;
}
if (set->num_connectors == 1 &&
set->connectors[0] != &sou->base.connector) {
DRM_ERROR("Connector doesn't match %p %p\n",
set->connectors[0], &sou->base.connector);
return -EINVAL;
}
/* sou only supports one fb active at the time */
if (sou->base.is_implicit &&
dev_priv->sou_priv->implicit_fb && vfb &&
!(dev_priv->sou_priv->num_implicit == 1 &&
sou->active_implicit) &&
dev_priv->sou_priv->implicit_fb != vfb) {
DRM_ERROR("Multiple framebuffers not supported\n");
return -EINVAL;
}
/* since they always map one to one these are safe */
connector = &sou->base.connector;
encoder = &sou->base.encoder;
/* should we turn the crtc off */
if (set->num_connectors == 0 || !set->mode || !set->fb) {
ret = vmw_sou_fifo_destroy(dev_priv, sou);
/* the hardware has hung don't do anything more */
if (unlikely(ret != 0))
return ret;
connector->encoder = NULL;
encoder->crtc = NULL;
crtc->primary->fb = NULL;
crtc->x = 0;
crtc->y = 0;
crtc->enabled = false;
vmw_sou_del_active(dev_priv, sou);
vmw_sou_backing_free(dev_priv, sou);
return 0;
}
/* we now know we want to set a mode */
mode = set->mode;
fb = set->fb;
if (set->x + mode->hdisplay > fb->width ||
set->y + mode->vdisplay > fb->height) {
DRM_ERROR("set outside of framebuffer\n");
return -EINVAL;
}
vmw_svga_enable(dev_priv);
if (mode->hdisplay != crtc->mode.hdisplay ||
mode->vdisplay != crtc->mode.vdisplay) {
/* no need to check if depth is different, because backing
* store depth is forced to 4 by the device.
*/
ret = vmw_sou_fifo_destroy(dev_priv, sou);
/* the hardware has hung don't do anything more */
if (unlikely(ret != 0))
return ret;
vmw_sou_backing_free(dev_priv, sou);
}
if (!sou->buffer) {
/* forced to depth 4 by the device */
size_t size = mode->hdisplay * mode->vdisplay * 4;
ret = vmw_sou_backing_alloc(dev_priv, sou, size);
if (unlikely(ret != 0))
return ret;
}
ret = vmw_sou_fifo_create(dev_priv, sou, set->x, set->y, mode);
if (unlikely(ret != 0)) {
/*
* We are in a bit of a situation here, the hardware has
* hung and we may or may not have a buffer hanging of
* the screen object, best thing to do is not do anything
* if we where defined, if not just turn the crtc of.
* Not what userspace wants but it needs to htfu.
*/
if (sou->defined)
return ret;
connector->encoder = NULL;
encoder->crtc = NULL;
crtc->primary->fb = NULL;
crtc->x = 0;
crtc->y = 0;
crtc->enabled = false;
return ret;
}
vmw_sou_add_active(dev_priv, sou, vfb);
connector->encoder = encoder;
encoder->crtc = crtc;
crtc->mode = *mode;
crtc->primary->fb = fb;
crtc->x = set->x;
crtc->y = set->y;
crtc->enabled = true;
return 0;
}
/**
* Returns if this unit can be page flipped.
* Must be called with the mode_config mutex held.
*/
static bool vmw_sou_screen_object_flippable(struct vmw_private *dev_priv,
struct drm_crtc *crtc)
{
struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc);
if (!sou->base.is_implicit)
return true;
if (dev_priv->sou_priv->num_implicit != 1)
return false;
return true;
}
/**
* Update the implicit fb to the current fb of this crtc.
* Must be called with the mode_config mutex held.
*/
static void vmw_sou_update_implicit_fb(struct vmw_private *dev_priv,
struct drm_crtc *crtc)
{
struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc);
BUG_ON(!sou->base.is_implicit);
dev_priv->sou_priv->implicit_fb =
vmw_framebuffer_to_vfb(sou->base.crtc.primary->fb);
}
static int vmw_sou_crtc_page_flip(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_pending_vblank_event *event,
uint32_t flags)
{
struct vmw_private *dev_priv = vmw_priv(crtc->dev);
struct drm_framebuffer *old_fb = crtc->primary->fb;
struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(fb);
struct vmw_fence_obj *fence = NULL;
struct drm_clip_rect clips;
int ret;
/* require ScreenObject support for page flipping */
if (!dev_priv->sou_priv)
return -ENOSYS;
if (!vmw_sou_screen_object_flippable(dev_priv, crtc))
return -EINVAL;
crtc->primary->fb = fb;
/* do a full screen dirty update */
clips.x1 = clips.y1 = 0;
clips.x2 = fb->width;
clips.y2 = fb->height;
if (vfb->dmabuf)
ret = vmw_kms_sou_do_dmabuf_dirty(dev_priv, vfb,
&clips, 1, 1,
true, &fence);
else
ret = vmw_kms_sou_do_surface_dirty(dev_priv, vfb,
&clips, NULL, NULL,
0, 0, 1, 1, &fence);
if (ret != 0)
goto out_no_fence;
if (!fence) {
ret = -EINVAL;
goto out_no_fence;
}
if (event) {
struct drm_file *file_priv = event->base.file_priv;
ret = vmw_event_fence_action_queue(file_priv, fence,
&event->base,
&event->event.tv_sec,
&event->event.tv_usec,
true);
}
/*
* No need to hold on to this now. The only cleanup
* we need to do if we fail is unref the fence.
*/
vmw_fence_obj_unreference(&fence);
if (vmw_crtc_to_du(crtc)->is_implicit)
vmw_sou_update_implicit_fb(dev_priv, crtc);
return ret;
out_no_fence:
crtc->primary->fb = old_fb;
return ret;
}
static struct drm_crtc_funcs vmw_screen_object_crtc_funcs = {
.save = vmw_du_crtc_save,
.restore = vmw_du_crtc_restore,
.cursor_set2 = vmw_du_crtc_cursor_set2,
.cursor_move = vmw_du_crtc_cursor_move,
.gamma_set = vmw_du_crtc_gamma_set,
.destroy = vmw_sou_crtc_destroy,
.set_config = vmw_sou_crtc_set_config,
.page_flip = vmw_sou_crtc_page_flip,
};
/*
* Screen Object Display Unit encoder functions
*/
static void vmw_sou_encoder_destroy(struct drm_encoder *encoder)
{
vmw_sou_destroy(vmw_encoder_to_sou(encoder));
}
static struct drm_encoder_funcs vmw_screen_object_encoder_funcs = {
.destroy = vmw_sou_encoder_destroy,
};
/*
* Screen Object Display Unit connector functions
*/
static void vmw_sou_connector_destroy(struct drm_connector *connector)
{
vmw_sou_destroy(vmw_connector_to_sou(connector));
}
static struct drm_connector_funcs vmw_sou_connector_funcs = {
.dpms = vmw_du_connector_dpms,
.save = vmw_du_connector_save,
.restore = vmw_du_connector_restore,
.detect = vmw_du_connector_detect,
.fill_modes = vmw_du_connector_fill_modes,
.set_property = vmw_du_connector_set_property,
.destroy = vmw_sou_connector_destroy,
};
static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit)
{
struct vmw_screen_object_unit *sou;
struct drm_device *dev = dev_priv->dev;
struct drm_connector *connector;
struct drm_encoder *encoder;
struct drm_crtc *crtc;
sou = kzalloc(sizeof(*sou), GFP_KERNEL);
if (!sou)
return -ENOMEM;
sou->base.unit = unit;
crtc = &sou->base.crtc;
encoder = &sou->base.encoder;
connector = &sou->base.connector;
sou->active_implicit = false;
sou->base.pref_active = (unit == 0);
sou->base.pref_width = dev_priv->initial_width;
sou->base.pref_height = dev_priv->initial_height;
sou->base.pref_mode = NULL;
sou->base.is_implicit = true;
drm_connector_init(dev, connector, &vmw_sou_connector_funcs,
DRM_MODE_CONNECTOR_VIRTUAL);
connector->status = vmw_du_connector_detect(connector, true);
drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs,
DRM_MODE_ENCODER_VIRTUAL);
drm_mode_connector_attach_encoder(connector, encoder);
encoder->possible_crtcs = (1 << unit);
encoder->possible_clones = 0;
(void) drm_connector_register(connector);
drm_crtc_init(dev, crtc, &vmw_screen_object_crtc_funcs);
drm_mode_crtc_set_gamma_size(crtc, 256);
drm_object_attach_property(&connector->base,
dev->mode_config.dirty_info_property,
1);
return 0;
}
int vmw_kms_sou_init_display(struct vmw_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
int i, ret;
if (dev_priv->sou_priv) {
DRM_INFO("sou system already on\n");
return -EINVAL;
}
if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) {
DRM_INFO("Not using screen objects,"
" missing cap SCREEN_OBJECT_2\n");
return -ENOSYS;
}
ret = -ENOMEM;
dev_priv->sou_priv = kmalloc(sizeof(*dev_priv->sou_priv), GFP_KERNEL);
if (unlikely(!dev_priv->sou_priv))
goto err_no_mem;
dev_priv->sou_priv->num_implicit = 0;
dev_priv->sou_priv->implicit_fb = NULL;
ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
if (unlikely(ret != 0))
goto err_free;
ret = drm_mode_create_dirty_info_property(dev);
if (unlikely(ret != 0))
goto err_vblank_cleanup;
for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
vmw_sou_init(dev_priv, i);
dev_priv->active_display_unit = vmw_du_screen_object;
DRM_INFO("Screen Objects Display Unit initialized\n");
return 0;
err_vblank_cleanup:
drm_vblank_cleanup(dev);
err_free:
kfree(dev_priv->sou_priv);
dev_priv->sou_priv = NULL;
err_no_mem:
return ret;
}
int vmw_kms_sou_close_display(struct vmw_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
if (!dev_priv->sou_priv)
return -ENOSYS;
drm_vblank_cleanup(dev);
kfree(dev_priv->sou_priv);
return 0;
}
static int do_dmabuf_define_gmrfb(struct vmw_private *dev_priv,
struct vmw_framebuffer *framebuffer)
{
struct vmw_dma_buffer *buf =
container_of(framebuffer, struct vmw_framebuffer_dmabuf,
base)->buffer;
int depth = framebuffer->base.depth;
struct {
uint32_t header;
SVGAFifoCmdDefineGMRFB body;
} *cmd;
/* Emulate RGBA support, contrary to svga_reg.h this is not
* supported by hosts. This is only a problem if we are reading
* this value later and expecting what we uploaded back.
*/
if (depth == 32)
depth = 24;
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (!cmd) {
DRM_ERROR("Out of fifo space for dirty framebuffer command.\n");
return -ENOMEM;
}
cmd->header = SVGA_CMD_DEFINE_GMRFB;
cmd->body.format.bitsPerPixel = framebuffer->base.bits_per_pixel;
cmd->body.format.colorDepth = depth;
cmd->body.format.reserved = 0;
cmd->body.bytesPerLine = framebuffer->base.pitches[0];
/* Buffer is reserved in vram or GMR */
vmw_bo_get_guest_ptr(&buf->base, &cmd->body.ptr);
vmw_fifo_commit(dev_priv, sizeof(*cmd));
return 0;
}
/**
* vmw_sou_surface_fifo_commit - Callback to fill in and submit a
* blit surface to screen command.
*
* @dirty: The closure structure.
*
* Fills in the missing fields in the command, and translates the cliprects
* to match the destination bounding box encoded.
*/
static void vmw_sou_surface_fifo_commit(struct vmw_kms_dirty *dirty)
{
struct vmw_kms_sou_surface_dirty *sdirty =
container_of(dirty, typeof(*sdirty), base);
struct vmw_kms_sou_dirty_cmd *cmd = dirty->cmd;
s32 trans_x = dirty->unit->crtc.x - sdirty->dst_x;
s32 trans_y = dirty->unit->crtc.y - sdirty->dst_y;
size_t region_size = dirty->num_hits * sizeof(SVGASignedRect);
SVGASignedRect *blit = (SVGASignedRect *) &cmd[1];
int i;
cmd->header.id = SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN;
cmd->header.size = sizeof(cmd->body) + region_size;
/*
* Use the destination bounding box to specify destination - and
* source bounding regions.
*/
cmd->body.destRect.left = sdirty->left;
cmd->body.destRect.right = sdirty->right;
cmd->body.destRect.top = sdirty->top;
cmd->body.destRect.bottom = sdirty->bottom;
cmd->body.srcRect.left = sdirty->left + trans_x;
cmd->body.srcRect.right = sdirty->right + trans_x;
cmd->body.srcRect.top = sdirty->top + trans_y;
cmd->body.srcRect.bottom = sdirty->bottom + trans_y;
cmd->body.srcImage.sid = sdirty->sid;
cmd->body.destScreenId = dirty->unit->unit;
/* Blits are relative to the destination rect. Translate. */
for (i = 0; i < dirty->num_hits; ++i, ++blit) {
blit->left -= sdirty->left;
blit->right -= sdirty->left;
blit->top -= sdirty->top;
blit->bottom -= sdirty->top;
}
vmw_fifo_commit(dirty->dev_priv, region_size + sizeof(*cmd));
sdirty->left = sdirty->top = S32_MAX;
sdirty->right = sdirty->bottom = S32_MIN;
}
/**
* vmw_sou_surface_clip - Callback to encode a blit surface to screen cliprect.
*
* @dirty: The closure structure
*
* Encodes a SVGASignedRect cliprect and updates the bounding box of the
* BLIT_SURFACE_TO_SCREEN command.
*/
static void vmw_sou_surface_clip(struct vmw_kms_dirty *dirty)
{
struct vmw_kms_sou_surface_dirty *sdirty =
container_of(dirty, typeof(*sdirty), base);
struct vmw_kms_sou_dirty_cmd *cmd = dirty->cmd;
SVGASignedRect *blit = (SVGASignedRect *) &cmd[1];
/* Destination rect. */
blit += dirty->num_hits;
blit->left = dirty->unit_x1;
blit->top = dirty->unit_y1;
blit->right = dirty->unit_x2;
blit->bottom = dirty->unit_y2;
/* Destination bounding box */
sdirty->left = min_t(s32, sdirty->left, dirty->unit_x1);
sdirty->top = min_t(s32, sdirty->top, dirty->unit_y1);
sdirty->right = max_t(s32, sdirty->right, dirty->unit_x2);
sdirty->bottom = max_t(s32, sdirty->bottom, dirty->unit_y2);
dirty->num_hits++;
}
/**
* vmw_kms_sou_do_surface_dirty - Dirty part of a surface backed framebuffer
*
* @dev_priv: Pointer to the device private structure.
* @framebuffer: Pointer to the surface-buffer backed framebuffer.
* @clips: Array of clip rects. Either @clips or @vclips must be NULL.
* @vclips: Alternate array of clip rects. Either @clips or @vclips must
* be NULL.
* @srf: Pointer to surface to blit from. If NULL, the surface attached
* to @framebuffer will be used.
* @dest_x: X coordinate offset to align @srf with framebuffer coordinates.
* @dest_y: Y coordinate offset to align @srf with framebuffer coordinates.
* @num_clips: Number of clip rects in @clips.
* @inc: Increment to use when looping over @clips.
* @out_fence: If non-NULL, will return a ref-counted pointer to a
* struct vmw_fence_obj. The returned fence pointer may be NULL in which
* case the device has already synchronized.
*
* Returns 0 on success, negative error code on failure. -ERESTARTSYS if
* interrupted.
*/
int vmw_kms_sou_do_surface_dirty(struct vmw_private *dev_priv,
struct vmw_framebuffer *framebuffer,
struct drm_clip_rect *clips,
struct drm_vmw_rect *vclips,
struct vmw_resource *srf,
s32 dest_x,
s32 dest_y,
unsigned num_clips, int inc,
struct vmw_fence_obj **out_fence)
{
struct vmw_framebuffer_surface *vfbs =
container_of(framebuffer, typeof(*vfbs), base);
struct vmw_kms_sou_surface_dirty sdirty;
int ret;
if (!srf)
srf = &vfbs->surface->res;
ret = vmw_kms_helper_resource_prepare(srf, true);
if (ret)
return ret;
sdirty.base.fifo_commit = vmw_sou_surface_fifo_commit;
sdirty.base.clip = vmw_sou_surface_clip;
sdirty.base.dev_priv = dev_priv;
sdirty.base.fifo_reserve_size = sizeof(struct vmw_kms_sou_dirty_cmd) +
sizeof(SVGASignedRect) * num_clips;
sdirty.sid = srf->id;
sdirty.left = sdirty.top = S32_MAX;
sdirty.right = sdirty.bottom = S32_MIN;
sdirty.dst_x = dest_x;
sdirty.dst_y = dest_y;
ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
dest_x, dest_y, num_clips, inc,
&sdirty.base);
vmw_kms_helper_resource_finish(srf, out_fence);
return ret;
}
/**
* vmw_sou_dmabuf_fifo_commit - Callback to submit a set of readback clips.
*
* @dirty: The closure structure.
*
* Commits a previously built command buffer of readback clips.
*/
static void vmw_sou_dmabuf_fifo_commit(struct vmw_kms_dirty *dirty)
{
vmw_fifo_commit(dirty->dev_priv,
sizeof(struct vmw_kms_sou_dmabuf_blit) *
dirty->num_hits);
}
/**
* vmw_sou_dmabuf_clip - Callback to encode a readback cliprect.
*
* @dirty: The closure structure
*
* Encodes a BLIT_GMRFB_TO_SCREEN cliprect.
*/
static void vmw_sou_dmabuf_clip(struct vmw_kms_dirty *dirty)
{
struct vmw_kms_sou_dmabuf_blit *blit = dirty->cmd;
blit += dirty->num_hits;
blit->header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN;
blit->body.destScreenId = dirty->unit->unit;
blit->body.srcOrigin.x = dirty->fb_x;
blit->body.srcOrigin.y = dirty->fb_y;
blit->body.destRect.left = dirty->unit_x1;
blit->body.destRect.top = dirty->unit_y1;
blit->body.destRect.right = dirty->unit_x2;
blit->body.destRect.bottom = dirty->unit_y2;
dirty->num_hits++;
}
/**
* vmw_kms_do_dmabuf_dirty - Dirty part of a dma-buffer backed framebuffer
*
* @dev_priv: Pointer to the device private structure.
* @framebuffer: Pointer to the dma-buffer backed framebuffer.
* @clips: Array of clip rects.
* @num_clips: Number of clip rects in @clips.
* @increment: Increment to use when looping over @clips.
* @interruptible: Whether to perform waits interruptible if possible.
* @out_fence: If non-NULL, will return a ref-counted pointer to a
* struct vmw_fence_obj. The returned fence pointer may be NULL in which
* case the device has already synchronized.
*
* Returns 0 on success, negative error code on failure. -ERESTARTSYS if
* interrupted.
*/
int vmw_kms_sou_do_dmabuf_dirty(struct vmw_private *dev_priv,
struct vmw_framebuffer *framebuffer,
struct drm_clip_rect *clips,
unsigned num_clips, int increment,
bool interruptible,
struct vmw_fence_obj **out_fence)
{
struct vmw_dma_buffer *buf =
container_of(framebuffer, struct vmw_framebuffer_dmabuf,
base)->buffer;
struct vmw_kms_dirty dirty;
int ret;
ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, interruptible,
false);
if (ret)
return ret;
ret = do_dmabuf_define_gmrfb(dev_priv, framebuffer);
if (unlikely(ret != 0))
goto out_revert;
dirty.fifo_commit = vmw_sou_dmabuf_fifo_commit;
dirty.clip = vmw_sou_dmabuf_clip;
dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_dmabuf_blit) *
num_clips;
ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, NULL,
0, 0, num_clips, increment, &dirty);
vmw_kms_helper_buffer_finish(dev_priv, NULL, buf, out_fence, NULL);
return ret;
out_revert:
vmw_kms_helper_buffer_revert(buf);
return ret;
}
/**
* vmw_sou_readback_fifo_commit - Callback to submit a set of readback clips.
*
* @dirty: The closure structure.
*
* Commits a previously built command buffer of readback clips.
*/
static void vmw_sou_readback_fifo_commit(struct vmw_kms_dirty *dirty)
{
vmw_fifo_commit(dirty->dev_priv,
sizeof(struct vmw_kms_sou_readback_blit) *
dirty->num_hits);
}
/**
* vmw_sou_readback_clip - Callback to encode a readback cliprect.
*
* @dirty: The closure structure
*
* Encodes a BLIT_SCREEN_TO_GMRFB cliprect.
*/
static void vmw_sou_readback_clip(struct vmw_kms_dirty *dirty)
{
struct vmw_kms_sou_readback_blit *blit = dirty->cmd;
blit += dirty->num_hits;
blit->header = SVGA_CMD_BLIT_SCREEN_TO_GMRFB;
blit->body.srcScreenId = dirty->unit->unit;
blit->body.destOrigin.x = dirty->fb_x;
blit->body.destOrigin.y = dirty->fb_y;
blit->body.srcRect.left = dirty->unit_x1;
blit->body.srcRect.top = dirty->unit_y1;
blit->body.srcRect.right = dirty->unit_x2;
blit->body.srcRect.bottom = dirty->unit_y2;
dirty->num_hits++;
}
/**
* vmw_kms_sou_readback - Perform a readback from the screen object system to
* a dma-buffer backed framebuffer.
*
* @dev_priv: Pointer to the device private structure.
* @file_priv: Pointer to a struct drm_file identifying the caller.
* Must be set to NULL if @user_fence_rep is NULL.
* @vfb: Pointer to the dma-buffer backed framebuffer.
* @user_fence_rep: User-space provided structure for fence information.
* Must be set to non-NULL if @file_priv is non-NULL.
* @vclips: Array of clip rects.
* @num_clips: Number of clip rects in @vclips.
*
* Returns 0 on success, negative error code on failure. -ERESTARTSYS if
* interrupted.
*/
int vmw_kms_sou_readback(struct vmw_private *dev_priv,
struct drm_file *file_priv,
struct vmw_framebuffer *vfb,
struct drm_vmw_fence_rep __user *user_fence_rep,
struct drm_vmw_rect *vclips,
uint32_t num_clips)
{
struct vmw_dma_buffer *buf =
container_of(vfb, struct vmw_framebuffer_dmabuf, base)->buffer;
struct vmw_kms_dirty dirty;
int ret;
ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, true, false);
if (ret)
return ret;
ret = do_dmabuf_define_gmrfb(dev_priv, vfb);
if (unlikely(ret != 0))
goto out_revert;
dirty.fifo_commit = vmw_sou_readback_fifo_commit;
dirty.clip = vmw_sou_readback_clip;
dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_readback_blit) *
num_clips;
ret = vmw_kms_helper_dirty(dev_priv, vfb, NULL, vclips,
0, 0, num_clips, 1, &dirty);
vmw_kms_helper_buffer_finish(dev_priv, file_priv, buf, NULL,
user_fence_rep);
return ret;
out_revert:
vmw_kms_helper_buffer_revert(buf);
return ret;
}