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ubuntu-linux-kernel/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c

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2024-04-01 15:06:58 +00:00
/******************************************************************************
*
* COPYRIGHT © 2014-2015 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 "device_include/svga3d_surfacedefs.h"
#include <drm/drm_plane_helper.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#define vmw_crtc_to_stdu(x) \
container_of(x, struct vmw_screen_target_display_unit, base.crtc)
#define vmw_encoder_to_stdu(x) \
container_of(x, struct vmw_screen_target_display_unit, base.encoder)
#define vmw_connector_to_stdu(x) \
container_of(x, struct vmw_screen_target_display_unit, base.connector)
enum stdu_content_type {
SAME_AS_DISPLAY = 0,
SEPARATE_SURFACE,
SEPARATE_DMA
};
/**
* struct vmw_stdu_dirty - closure structure for the update functions
*
* @base: The base type we derive from. Used by vmw_kms_helper_dirty().
* @transfer: Transfer direction for DMA command.
* @left: Left side of bounding box.
* @right: Right side of bounding box.
* @top: Top side of bounding box.
* @bottom: Bottom side of bounding box.
* @fb_left: Left side of the framebuffer/content bounding box
* @fb_top: Top of the framebuffer/content bounding box
* @buf: DMA buffer when DMA-ing between buffer and screen targets.
* @sid: Surface ID when copying between surface and screen targets.
*/
struct vmw_stdu_dirty {
struct vmw_kms_dirty base;
SVGA3dTransferType transfer;
s32 left, right, top, bottom;
s32 fb_left, fb_top;
u32 pitch;
union {
struct vmw_dma_buffer *buf;
u32 sid;
};
};
/*
* SVGA commands that are used by this code. Please see the device headers
* for explanation.
*/
struct vmw_stdu_update {
SVGA3dCmdHeader header;
SVGA3dCmdUpdateGBScreenTarget body;
};
struct vmw_stdu_dma {
SVGA3dCmdHeader header;
SVGA3dCmdSurfaceDMA body;
};
struct vmw_stdu_surface_copy {
SVGA3dCmdHeader header;
SVGA3dCmdSurfaceCopy body;
};
/**
* struct vmw_screen_target_display_unit
*
* @base: VMW specific DU structure
* @display_srf: surface to be displayed. The dimension of this will always
* match the display mode. If the display mode matches
* content_vfbs dimensions, then this is a pointer into the
* corresponding field in content_vfbs. If not, then this
* is a separate buffer to which content_vfbs will blit to.
* @content_type: content_fb type
* @defined: true if the current display unit has been initialized
*/
struct vmw_screen_target_display_unit {
struct vmw_display_unit base;
const struct vmw_surface *display_srf;
enum stdu_content_type content_fb_type;
s32 display_width, display_height;
bool defined;
/* For CPU Blit */
struct ttm_bo_kmap_obj host_map;
unsigned int cpp;
};
static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu);
/******************************************************************************
* Screen Target Display Unit CRTC Functions
*****************************************************************************/
/**
* vmw_stdu_crtc_destroy - cleans up the STDU
*
* @crtc: used to get a reference to the containing STDU
*/
static void vmw_stdu_crtc_destroy(struct drm_crtc *crtc)
{
vmw_stdu_destroy(vmw_crtc_to_stdu(crtc));
}
/**
* vmw_stdu_define_st - Defines a Screen Target
*
* @dev_priv: VMW DRM device
* @stdu: display unit to create a Screen Target for
* @mode: The mode to set.
* @crtc_x: X coordinate of screen target relative to framebuffer origin.
* @crtc_y: Y coordinate of screen target relative to framebuffer origin.
*
* Creates a STDU that we can used later. This function is called whenever the
* framebuffer size changes.
*
* RETURNs:
* 0 on success, error code on failure
*/
static int vmw_stdu_define_st(struct vmw_private *dev_priv,
struct vmw_screen_target_display_unit *stdu,
struct drm_display_mode *mode,
int crtc_x, int crtc_y)
{
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDefineGBScreenTarget body;
} *cmd;
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (unlikely(cmd == NULL)) {
DRM_ERROR("Out of FIFO space defining Screen Target\n");
return -ENOMEM;
}
cmd->header.id = SVGA_3D_CMD_DEFINE_GB_SCREENTARGET;
cmd->header.size = sizeof(cmd->body);
cmd->body.stid = stdu->base.unit;
cmd->body.width = mode->hdisplay;
cmd->body.height = mode->vdisplay;
cmd->body.flags = (0 == cmd->body.stid) ? SVGA_STFLAG_PRIMARY : 0;
cmd->body.dpi = 0;
if (stdu->base.is_implicit) {
cmd->body.xRoot = crtc_x;
cmd->body.yRoot = crtc_y;
} else {
cmd->body.xRoot = stdu->base.gui_x;
cmd->body.yRoot = stdu->base.gui_y;
}
stdu->base.set_gui_x = cmd->body.xRoot;
stdu->base.set_gui_y = cmd->body.yRoot;
vmw_fifo_commit(dev_priv, sizeof(*cmd));
stdu->defined = true;
stdu->display_width = mode->hdisplay;
stdu->display_height = mode->vdisplay;
return 0;
}
/**
* vmw_stdu_bind_st - Binds a surface to a Screen Target
*
* @dev_priv: VMW DRM device
* @stdu: display unit affected
* @res: Buffer to bind to the screen target. Set to NULL to blank screen.
*
* Binding a surface to a Screen Target the same as flipping
*/
static int vmw_stdu_bind_st(struct vmw_private *dev_priv,
struct vmw_screen_target_display_unit *stdu,
const struct vmw_resource *res)
{
SVGA3dSurfaceImageId image;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdBindGBScreenTarget body;
} *cmd;
if (!stdu->defined) {
DRM_ERROR("No screen target defined\n");
return -EINVAL;
}
/* Set up image using information in vfb */
memset(&image, 0, sizeof(image));
image.sid = res ? res->id : SVGA3D_INVALID_ID;
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (unlikely(cmd == NULL)) {
DRM_ERROR("Out of FIFO space binding a screen target\n");
return -ENOMEM;
}
cmd->header.id = SVGA_3D_CMD_BIND_GB_SCREENTARGET;
cmd->header.size = sizeof(cmd->body);
cmd->body.stid = stdu->base.unit;
cmd->body.image = image;
vmw_fifo_commit(dev_priv, sizeof(*cmd));
return 0;
}
/**
* vmw_stdu_populate_update - populate an UPDATE_GB_SCREENTARGET command with a
* bounding box.
*
* @cmd: Pointer to command stream.
* @unit: Screen target unit.
* @left: Left side of bounding box.
* @right: Right side of bounding box.
* @top: Top side of bounding box.
* @bottom: Bottom side of bounding box.
*/
static void vmw_stdu_populate_update(void *cmd, int unit,
s32 left, s32 right, s32 top, s32 bottom)
{
struct vmw_stdu_update *update = cmd;
update->header.id = SVGA_3D_CMD_UPDATE_GB_SCREENTARGET;
update->header.size = sizeof(update->body);
update->body.stid = unit;
update->body.rect.x = left;
update->body.rect.y = top;
update->body.rect.w = right - left;
update->body.rect.h = bottom - top;
}
/**
* vmw_stdu_update_st - Full update of a Screen Target
*
* @dev_priv: VMW DRM device
* @stdu: display unit affected
*
* This function needs to be called whenever the content of a screen
* target has changed completely. Typically as a result of a backing
* surface change.
*
* RETURNS:
* 0 on success, error code on failure
*/
static int vmw_stdu_update_st(struct vmw_private *dev_priv,
struct vmw_screen_target_display_unit *stdu)
{
struct vmw_stdu_update *cmd;
if (!stdu->defined) {
DRM_ERROR("No screen target defined");
return -EINVAL;
}
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (unlikely(cmd == NULL)) {
DRM_ERROR("Out of FIFO space updating a Screen Target\n");
return -ENOMEM;
}
vmw_stdu_populate_update(cmd, stdu->base.unit,
0, stdu->display_width,
0, stdu->display_height);
vmw_fifo_commit(dev_priv, sizeof(*cmd));
return 0;
}
/**
* vmw_stdu_destroy_st - Destroy a Screen Target
*
* @dev_priv: VMW DRM device
* @stdu: display unit to destroy
*/
static int vmw_stdu_destroy_st(struct vmw_private *dev_priv,
struct vmw_screen_target_display_unit *stdu)
{
int ret;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDestroyGBScreenTarget body;
} *cmd;
/* Nothing to do if not successfully defined */
if (unlikely(!stdu->defined))
return 0;
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (unlikely(cmd == NULL)) {
DRM_ERROR("Out of FIFO space, screen target not destroyed\n");
return -ENOMEM;
}
cmd->header.id = SVGA_3D_CMD_DESTROY_GB_SCREENTARGET;
cmd->header.size = sizeof(cmd->body);
cmd->body.stid = stdu->base.unit;
vmw_fifo_commit(dev_priv, sizeof(*cmd));
/* 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");
stdu->defined = false;
stdu->display_width = 0;
stdu->display_height = 0;
return ret;
}
/**
* vmw_stdu_crtc_mode_set_nofb - Updates screen target size
*
* @crtc: CRTC associated with the screen target
*
* This function defines/destroys a screen target
*
*/
static void vmw_stdu_crtc_mode_set_nofb(struct drm_crtc *crtc)
{
struct vmw_private *dev_priv;
struct vmw_screen_target_display_unit *stdu;
int ret;
stdu = vmw_crtc_to_stdu(crtc);
dev_priv = vmw_priv(crtc->dev);
if (stdu->defined) {
ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
if (ret)
DRM_ERROR("Failed to blank CRTC\n");
(void) vmw_stdu_update_st(dev_priv, stdu);
ret = vmw_stdu_destroy_st(dev_priv, stdu);
if (ret)
DRM_ERROR("Failed to destroy Screen Target\n");
stdu->content_fb_type = SAME_AS_DISPLAY;
}
if (!crtc->state->enable)
return;
vmw_svga_enable(dev_priv);
ret = vmw_stdu_define_st(dev_priv, stdu, &crtc->mode, crtc->x, crtc->y);
if (ret)
DRM_ERROR("Failed to define Screen Target of size %dx%d\n",
crtc->x, crtc->y);
}
static void vmw_stdu_crtc_helper_prepare(struct drm_crtc *crtc)
{
}
static void vmw_stdu_crtc_atomic_enable(struct drm_crtc *crtc,
struct drm_crtc_state *old_state)
{
struct vmw_private *dev_priv;
struct vmw_screen_target_display_unit *stdu;
struct vmw_framebuffer *vfb;
struct drm_framebuffer *fb;
stdu = vmw_crtc_to_stdu(crtc);
dev_priv = vmw_priv(crtc->dev);
fb = crtc->primary->fb;
vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
if (vfb)
vmw_kms_add_active(dev_priv, &stdu->base, vfb);
else
vmw_kms_del_active(dev_priv, &stdu->base);
}
static void vmw_stdu_crtc_atomic_disable(struct drm_crtc *crtc,
struct drm_crtc_state *old_state)
{
struct vmw_private *dev_priv;
struct vmw_screen_target_display_unit *stdu;
int ret;
if (!crtc) {
DRM_ERROR("CRTC is NULL\n");
return;
}
stdu = vmw_crtc_to_stdu(crtc);
dev_priv = vmw_priv(crtc->dev);
if (stdu->defined) {
ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
if (ret)
DRM_ERROR("Failed to blank CRTC\n");
(void) vmw_stdu_update_st(dev_priv, stdu);
ret = vmw_stdu_destroy_st(dev_priv, stdu);
if (ret)
DRM_ERROR("Failed to destroy Screen Target\n");
stdu->content_fb_type = SAME_AS_DISPLAY;
}
}
/**
* vmw_stdu_crtc_page_flip - Binds a buffer to a screen target
*
* @crtc: CRTC to attach FB to
* @fb: FB to attach
* @event: Event to be posted. This event should've been alloced
* using k[mz]alloc, and should've been completely initialized.
* @page_flip_flags: Input flags.
*
* If the STDU uses the same display and content buffers, i.e. a true flip,
* this function will replace the existing display buffer with the new content
* buffer.
*
* If the STDU uses different display and content buffers, i.e. a blit, then
* only the content buffer will be updated.
*
* RETURNS:
* 0 on success, error code on failure
*/
static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
struct drm_framebuffer *new_fb,
struct drm_pending_vblank_event *event,
uint32_t flags,
struct drm_modeset_acquire_ctx *ctx)
{
struct vmw_private *dev_priv = vmw_priv(crtc->dev);
struct vmw_screen_target_display_unit *stdu = vmw_crtc_to_stdu(crtc);
struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(new_fb);
struct drm_vmw_rect vclips;
int ret;
dev_priv = vmw_priv(crtc->dev);
stdu = vmw_crtc_to_stdu(crtc);
if (!stdu->defined || !vmw_kms_crtc_flippable(dev_priv, crtc))
return -EINVAL;
/*
* We're always async, but the helper doesn't know how to set async
* so lie to the helper. Also, the helper expects someone
* to pick the event up from the crtc state, and if nobody does,
* it will free it. Since we handle the event in this function,
* don't hand it to the helper.
*/
flags &= ~DRM_MODE_PAGE_FLIP_ASYNC;
ret = drm_atomic_helper_page_flip(crtc, new_fb, NULL, flags, ctx);
if (ret) {
DRM_ERROR("Page flip error %d.\n", ret);
return ret;
}
if (stdu->base.is_implicit)
vmw_kms_update_implicit_fb(dev_priv, crtc);
/*
* Now that we've bound a new surface to the screen target,
* update the contents.
*/
vclips.x = crtc->x;
vclips.y = crtc->y;
vclips.w = crtc->mode.hdisplay;
vclips.h = crtc->mode.vdisplay;
if (vfb->dmabuf)
ret = vmw_kms_stdu_dma(dev_priv, NULL, vfb, NULL, NULL, &vclips,
1, 1, true, false);
else
ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, &vclips,
NULL, 0, 0, 1, 1, NULL);
if (ret) {
DRM_ERROR("Page flip update error %d.\n", ret);
return ret;
}
if (event) {
struct vmw_fence_obj *fence = NULL;
struct drm_file *file_priv = event->base.file_priv;
vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
if (!fence)
return -ENOMEM;
ret = vmw_event_fence_action_queue(file_priv, fence,
&event->base,
&event->event.vbl.tv_sec,
&event->event.vbl.tv_usec,
true);
vmw_fence_obj_unreference(&fence);
} else {
(void) vmw_fifo_flush(dev_priv, false);
}
return 0;
}
/**
* vmw_stdu_dmabuf_clip - Callback to encode a suface DMA command cliprect
*
* @dirty: The closure structure.
*
* Encodes a surface DMA command cliprect and updates the bounding box
* for the DMA.
*/
static void vmw_stdu_dmabuf_clip(struct vmw_kms_dirty *dirty)
{
struct vmw_stdu_dirty *ddirty =
container_of(dirty, struct vmw_stdu_dirty, base);
struct vmw_stdu_dma *cmd = dirty->cmd;
struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
blit += dirty->num_hits;
blit->srcx = dirty->fb_x;
blit->srcy = dirty->fb_y;
blit->x = dirty->unit_x1;
blit->y = dirty->unit_y1;
blit->d = 1;
blit->w = dirty->unit_x2 - dirty->unit_x1;
blit->h = dirty->unit_y2 - dirty->unit_y1;
dirty->num_hits++;
if (ddirty->transfer != SVGA3D_WRITE_HOST_VRAM)
return;
/* Destination bounding box */
ddirty->left = min_t(s32, ddirty->left, dirty->unit_x1);
ddirty->top = min_t(s32, ddirty->top, dirty->unit_y1);
ddirty->right = max_t(s32, ddirty->right, dirty->unit_x2);
ddirty->bottom = max_t(s32, ddirty->bottom, dirty->unit_y2);
}
/**
* vmw_stdu_dmabuf_fifo_commit - Callback to fill in and submit a DMA command.
*
* @dirty: The closure structure.
*
* Fills in the missing fields in a DMA command, and optionally encodes
* a screen target update command, depending on transfer direction.
*/
static void vmw_stdu_dmabuf_fifo_commit(struct vmw_kms_dirty *dirty)
{
struct vmw_stdu_dirty *ddirty =
container_of(dirty, struct vmw_stdu_dirty, base);
struct vmw_screen_target_display_unit *stdu =
container_of(dirty->unit, typeof(*stdu), base);
struct vmw_stdu_dma *cmd = dirty->cmd;
struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
SVGA3dCmdSurfaceDMASuffix *suffix =
(SVGA3dCmdSurfaceDMASuffix *) &blit[dirty->num_hits];
size_t blit_size = sizeof(*blit) * dirty->num_hits + sizeof(*suffix);
if (!dirty->num_hits) {
vmw_fifo_commit(dirty->dev_priv, 0);
return;
}
cmd->header.id = SVGA_3D_CMD_SURFACE_DMA;
cmd->header.size = sizeof(cmd->body) + blit_size;
vmw_bo_get_guest_ptr(&ddirty->buf->base, &cmd->body.guest.ptr);
cmd->body.guest.pitch = ddirty->pitch;
cmd->body.host.sid = stdu->display_srf->res.id;
cmd->body.host.face = 0;
cmd->body.host.mipmap = 0;
cmd->body.transfer = ddirty->transfer;
suffix->suffixSize = sizeof(*suffix);
suffix->maximumOffset = ddirty->buf->base.num_pages * PAGE_SIZE;
if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM) {
blit_size += sizeof(struct vmw_stdu_update);
vmw_stdu_populate_update(&suffix[1], stdu->base.unit,
ddirty->left, ddirty->right,
ddirty->top, ddirty->bottom);
}
vmw_fifo_commit(dirty->dev_priv, sizeof(*cmd) + blit_size);
ddirty->left = ddirty->top = S32_MAX;
ddirty->right = ddirty->bottom = S32_MIN;
}
/**
* vmw_stdu_dmabuf_cpu_clip - Callback to encode a CPU blit
*
* @dirty: The closure structure.
*
* This function calculates the bounding box for all the incoming clips.
*/
static void vmw_stdu_dmabuf_cpu_clip(struct vmw_kms_dirty *dirty)
{
struct vmw_stdu_dirty *ddirty =
container_of(dirty, struct vmw_stdu_dirty, base);
dirty->num_hits = 1;
/* Calculate destination bounding box */
ddirty->left = min_t(s32, ddirty->left, dirty->unit_x1);
ddirty->top = min_t(s32, ddirty->top, dirty->unit_y1);
ddirty->right = max_t(s32, ddirty->right, dirty->unit_x2);
ddirty->bottom = max_t(s32, ddirty->bottom, dirty->unit_y2);
/*
* Calculate content bounding box. We only need the top-left
* coordinate because width and height will be the same as the
* destination bounding box above
*/
ddirty->fb_left = min_t(s32, ddirty->fb_left, dirty->fb_x);
ddirty->fb_top = min_t(s32, ddirty->fb_top, dirty->fb_y);
}
/**
* vmw_stdu_dmabuf_cpu_commit - Callback to do a CPU blit from DMAbuf
*
* @dirty: The closure structure.
*
* For the special case when we cannot create a proxy surface in a
* 2D VM, we have to do a CPU blit ourselves.
*/
static void vmw_stdu_dmabuf_cpu_commit(struct vmw_kms_dirty *dirty)
{
struct vmw_stdu_dirty *ddirty =
container_of(dirty, struct vmw_stdu_dirty, base);
struct vmw_screen_target_display_unit *stdu =
container_of(dirty->unit, typeof(*stdu), base);
s32 width, height;
s32 src_pitch, dst_pitch;
u8 *src, *dst;
bool not_used;
struct ttm_bo_kmap_obj guest_map;
int ret;
if (!dirty->num_hits)
return;
width = ddirty->right - ddirty->left;
height = ddirty->bottom - ddirty->top;
if (width == 0 || height == 0)
return;
ret = ttm_bo_kmap(&ddirty->buf->base, 0, ddirty->buf->base.num_pages,
&guest_map);
if (ret) {
DRM_ERROR("Failed mapping framebuffer for blit: %d\n",
ret);
goto out_cleanup;
}
/* Assume we are blitting from Host (display_srf) to Guest (dmabuf) */
src_pitch = stdu->display_srf->base_size.width * stdu->cpp;
src = ttm_kmap_obj_virtual(&stdu->host_map, &not_used);
src += ddirty->top * src_pitch + ddirty->left * stdu->cpp;
dst_pitch = ddirty->pitch;
dst = ttm_kmap_obj_virtual(&guest_map, &not_used);
dst += ddirty->fb_top * dst_pitch + ddirty->fb_left * stdu->cpp;
/* Figure out the real direction */
if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM) {
u8 *tmp;
s32 tmp_pitch;
tmp = src;
tmp_pitch = src_pitch;
src = dst;
src_pitch = dst_pitch;
dst = tmp;
dst_pitch = tmp_pitch;
}
/* CPU Blit */
while (height-- > 0) {
memcpy(dst, src, width * stdu->cpp);
dst += dst_pitch;
src += src_pitch;
}
if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM) {
struct vmw_private *dev_priv;
struct vmw_stdu_update *cmd;
struct drm_clip_rect region;
int ret;
/* We are updating the actual surface, not a proxy */
region.x1 = ddirty->left;
region.x2 = ddirty->right;
region.y1 = ddirty->top;
region.y2 = ddirty->bottom;
ret = vmw_kms_update_proxy(
(struct vmw_resource *) &stdu->display_srf->res,
(const struct drm_clip_rect *) &region, 1, 1);
if (ret)
goto out_cleanup;
dev_priv = vmw_priv(stdu->base.crtc.dev);
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (!cmd) {
DRM_ERROR("Cannot reserve FIFO space to update STDU");
goto out_cleanup;
}
vmw_stdu_populate_update(cmd, stdu->base.unit,
ddirty->left, ddirty->right,
ddirty->top, ddirty->bottom);
vmw_fifo_commit(dev_priv, sizeof(*cmd));
}
ttm_bo_kunmap(&guest_map);
out_cleanup:
ddirty->left = ddirty->top = ddirty->fb_left = ddirty->fb_top = S32_MAX;
ddirty->right = ddirty->bottom = S32_MIN;
}
/**
* vmw_kms_stdu_dma - Perform a DMA transfer between a dma-buffer backed
* framebuffer and the screen target system.
*
* @dev_priv: Pointer to the device private structure.
* @file_priv: Pointer to a struct drm-file identifying the caller. May be
* set to NULL, but then @user_fence_rep must also be set to NULL.
* @vfb: Pointer to the dma-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.
* @num_clips: Number of clip rects in @clips or @vclips.
* @increment: Increment to use when looping over @clips or @vclips.
* @to_surface: Whether to DMA to the screen target system as opposed to
* from the screen target system.
* @interruptible: Whether to perform waits interruptible if possible.
*
* If DMA-ing till the screen target system, the function will also notify
* the screen target system that a bounding box of the cliprects has been
* updated.
* Returns 0 on success, negative error code on failure. -ERESTARTSYS if
* interrupted.
*/
int vmw_kms_stdu_dma(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_clip_rect *clips,
struct drm_vmw_rect *vclips,
uint32_t num_clips,
int increment,
bool to_surface,
bool interruptible)
{
struct vmw_dma_buffer *buf =
container_of(vfb, struct vmw_framebuffer_dmabuf, base)->buffer;
struct vmw_stdu_dirty ddirty;
int ret;
ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, interruptible,
false);
if (ret)
return ret;
ddirty.transfer = (to_surface) ? SVGA3D_WRITE_HOST_VRAM :
SVGA3D_READ_HOST_VRAM;
ddirty.left = ddirty.top = S32_MAX;
ddirty.right = ddirty.bottom = S32_MIN;
ddirty.fb_left = ddirty.fb_top = S32_MAX;
ddirty.pitch = vfb->base.pitches[0];
ddirty.buf = buf;
ddirty.base.fifo_commit = vmw_stdu_dmabuf_fifo_commit;
ddirty.base.clip = vmw_stdu_dmabuf_clip;
ddirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_dma) +
num_clips * sizeof(SVGA3dCopyBox) +
sizeof(SVGA3dCmdSurfaceDMASuffix);
if (to_surface)
ddirty.base.fifo_reserve_size += sizeof(struct vmw_stdu_update);
/* 2D VMs cannot use SVGA_3D_CMD_SURFACE_DMA so do CPU blit instead */
if (!(dev_priv->capabilities & SVGA_CAP_3D)) {
ddirty.base.fifo_commit = vmw_stdu_dmabuf_cpu_commit;
ddirty.base.clip = vmw_stdu_dmabuf_cpu_clip;
ddirty.base.fifo_reserve_size = 0;
}
ret = vmw_kms_helper_dirty(dev_priv, vfb, clips, vclips,
0, 0, num_clips, increment, &ddirty.base);
vmw_kms_helper_buffer_finish(dev_priv, file_priv, buf, NULL,
user_fence_rep);
return ret;
}
/**
* vmw_stdu_surface_clip - Callback to encode a surface copy command cliprect
*
* @dirty: The closure structure.
*
* Encodes a surface copy command cliprect and updates the bounding box
* for the copy.
*/
static void vmw_kms_stdu_surface_clip(struct vmw_kms_dirty *dirty)
{
struct vmw_stdu_dirty *sdirty =
container_of(dirty, struct vmw_stdu_dirty, base);
struct vmw_stdu_surface_copy *cmd = dirty->cmd;
struct vmw_screen_target_display_unit *stdu =
container_of(dirty->unit, typeof(*stdu), base);
if (sdirty->sid != stdu->display_srf->res.id) {
struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
blit += dirty->num_hits;
blit->srcx = dirty->fb_x;
blit->srcy = dirty->fb_y;
blit->x = dirty->unit_x1;
blit->y = dirty->unit_y1;
blit->d = 1;
blit->w = dirty->unit_x2 - dirty->unit_x1;
blit->h = dirty->unit_y2 - dirty->unit_y1;
}
dirty->num_hits++;
/* 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);
}
/**
* vmw_stdu_surface_fifo_commit - Callback to fill in and submit a surface
* copy command.
*
* @dirty: The closure structure.
*
* Fills in the missing fields in a surface copy command, and encodes a screen
* target update command.
*/
static void vmw_kms_stdu_surface_fifo_commit(struct vmw_kms_dirty *dirty)
{
struct vmw_stdu_dirty *sdirty =
container_of(dirty, struct vmw_stdu_dirty, base);
struct vmw_screen_target_display_unit *stdu =
container_of(dirty->unit, typeof(*stdu), base);
struct vmw_stdu_surface_copy *cmd = dirty->cmd;
struct vmw_stdu_update *update;
size_t blit_size = sizeof(SVGA3dCopyBox) * dirty->num_hits;
size_t commit_size;
if (!dirty->num_hits) {
vmw_fifo_commit(dirty->dev_priv, 0);
return;
}
if (sdirty->sid != stdu->display_srf->res.id) {
struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
cmd->header.id = SVGA_3D_CMD_SURFACE_COPY;
cmd->header.size = sizeof(cmd->body) + blit_size;
cmd->body.src.sid = sdirty->sid;
cmd->body.dest.sid = stdu->display_srf->res.id;
update = (struct vmw_stdu_update *) &blit[dirty->num_hits];
commit_size = sizeof(*cmd) + blit_size + sizeof(*update);
} else {
update = dirty->cmd;
commit_size = sizeof(*update);
}
vmw_stdu_populate_update(update, stdu->base.unit, sdirty->left,
sdirty->right, sdirty->top, sdirty->bottom);
vmw_fifo_commit(dirty->dev_priv, commit_size);
sdirty->left = sdirty->top = S32_MAX;
sdirty->right = sdirty->bottom = S32_MIN;
}
/**
* vmw_kms_stdu_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_stdu_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_stdu_dirty sdirty;
int ret;
if (!srf)
srf = &vfbs->surface->res;
ret = vmw_kms_helper_resource_prepare(srf, true);
if (ret)
return ret;
if (vfbs->is_dmabuf_proxy) {
ret = vmw_kms_update_proxy(srf, clips, num_clips, inc);
if (ret)
goto out_finish;
}
sdirty.base.fifo_commit = vmw_kms_stdu_surface_fifo_commit;
sdirty.base.clip = vmw_kms_stdu_surface_clip;
sdirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_surface_copy) +
sizeof(SVGA3dCopyBox) * num_clips +
sizeof(struct vmw_stdu_update);
sdirty.sid = srf->id;
sdirty.left = sdirty.top = S32_MAX;
sdirty.right = sdirty.bottom = S32_MIN;
ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
dest_x, dest_y, num_clips, inc,
&sdirty.base);
out_finish:
vmw_kms_helper_resource_finish(srf, out_fence);
return ret;
}
/*
* Screen Target CRTC dispatch table
*/
static const struct drm_crtc_funcs vmw_stdu_crtc_funcs = {
.gamma_set = vmw_du_crtc_gamma_set,
.destroy = vmw_stdu_crtc_destroy,
.reset = vmw_du_crtc_reset,
.atomic_duplicate_state = vmw_du_crtc_duplicate_state,
.atomic_destroy_state = vmw_du_crtc_destroy_state,
.set_config = vmw_kms_set_config,
.page_flip = vmw_stdu_crtc_page_flip,
};
/******************************************************************************
* Screen Target Display Unit Encoder Functions
*****************************************************************************/
/**
* vmw_stdu_encoder_destroy - cleans up the STDU
*
* @encoder: used the get the containing STDU
*
* vmwgfx cleans up crtc/encoder/connector all at the same time so technically
* this can be a no-op. Nevertheless, it doesn't hurt of have this in case
* the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't
* get called.
*/
static void vmw_stdu_encoder_destroy(struct drm_encoder *encoder)
{
vmw_stdu_destroy(vmw_encoder_to_stdu(encoder));
}
static const struct drm_encoder_funcs vmw_stdu_encoder_funcs = {
.destroy = vmw_stdu_encoder_destroy,
};
/******************************************************************************
* Screen Target Display Unit Connector Functions
*****************************************************************************/
/**
* vmw_stdu_connector_destroy - cleans up the STDU
*
* @connector: used to get the containing STDU
*
* vmwgfx cleans up crtc/encoder/connector all at the same time so technically
* this can be a no-op. Nevertheless, it doesn't hurt of have this in case
* the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't
* get called.
*/
static void vmw_stdu_connector_destroy(struct drm_connector *connector)
{
vmw_stdu_destroy(vmw_connector_to_stdu(connector));
}
static const struct drm_connector_funcs vmw_stdu_connector_funcs = {
.dpms = vmw_du_connector_dpms,
.detect = vmw_du_connector_detect,
.fill_modes = vmw_du_connector_fill_modes,
.set_property = vmw_du_connector_set_property,
.destroy = vmw_stdu_connector_destroy,
.reset = vmw_du_connector_reset,
.atomic_duplicate_state = vmw_du_connector_duplicate_state,
.atomic_destroy_state = vmw_du_connector_destroy_state,
.atomic_set_property = vmw_du_connector_atomic_set_property,
.atomic_get_property = vmw_du_connector_atomic_get_property,
};
static const struct
drm_connector_helper_funcs vmw_stdu_connector_helper_funcs = {
.best_encoder = drm_atomic_helper_best_encoder,
};
/******************************************************************************
* Screen Target Display Plane Functions
*****************************************************************************/
/**
* vmw_stdu_primary_plane_cleanup_fb - Unpins the display surface
*
* @plane: display plane
* @old_state: Contains the FB to clean up
*
* Unpins the display surface
*
* Returns 0 on success
*/
static void
vmw_stdu_primary_plane_cleanup_fb(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state);
if (vps->host_map.virtual)
ttm_bo_kunmap(&vps->host_map);
if (vps->surf)
WARN_ON(!vps->pinned);
vmw_du_plane_cleanup_fb(plane, old_state);
vps->content_fb_type = SAME_AS_DISPLAY;
vps->cpp = 0;
}
/**
* vmw_stdu_primary_plane_prepare_fb - Readies the display surface
*
* @plane: display plane
* @new_state: info on the new plane state, including the FB
*
* This function allocates a new display surface if the content is
* backed by a DMA. The display surface is pinned here, and it'll
* be unpinned in .cleanup_fb()
*
* Returns 0 on success
*/
static int
vmw_stdu_primary_plane_prepare_fb(struct drm_plane *plane,
struct drm_plane_state *new_state)
{
struct vmw_private *dev_priv = vmw_priv(plane->dev);
struct drm_framebuffer *new_fb = new_state->fb;
struct vmw_framebuffer *vfb;
struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
enum stdu_content_type new_content_type;
struct vmw_framebuffer_surface *new_vfbs;
struct drm_crtc *crtc = new_state->crtc;
uint32_t hdisplay = new_state->crtc_w, vdisplay = new_state->crtc_h;
int ret;
/* No FB to prepare */
if (!new_fb) {
if (vps->surf) {
WARN_ON(vps->pinned != 0);
vmw_surface_unreference(&vps->surf);
}
return 0;
}
vfb = vmw_framebuffer_to_vfb(new_fb);
new_vfbs = (vfb->dmabuf) ? NULL : vmw_framebuffer_to_vfbs(new_fb);
if (new_vfbs && new_vfbs->surface->base_size.width == hdisplay &&
new_vfbs->surface->base_size.height == vdisplay)
new_content_type = SAME_AS_DISPLAY;
else if (vfb->dmabuf)
new_content_type = SEPARATE_DMA;
else
new_content_type = SEPARATE_SURFACE;
if (new_content_type != SAME_AS_DISPLAY) {
struct vmw_surface content_srf;
struct drm_vmw_size display_base_size = {0};
display_base_size.width = hdisplay;
display_base_size.height = vdisplay;
display_base_size.depth = 1;
/*
* If content buffer is a DMA buf, then we have to construct
* surface info
*/
if (new_content_type == SEPARATE_DMA) {
switch (new_fb->format->cpp[0]*8) {
case 32:
content_srf.format = SVGA3D_X8R8G8B8;
break;
case 16:
content_srf.format = SVGA3D_R5G6B5;
break;
case 8:
content_srf.format = SVGA3D_P8;
break;
default:
DRM_ERROR("Invalid format\n");
return -EINVAL;
}
content_srf.flags = 0;
content_srf.mip_levels[0] = 1;
content_srf.multisample_count = 0;
} else {
content_srf = *new_vfbs->surface;
}
if (vps->surf) {
struct drm_vmw_size cur_base_size = vps->surf->base_size;
if (cur_base_size.width != display_base_size.width ||
cur_base_size.height != display_base_size.height ||
vps->surf->format != content_srf.format) {
WARN_ON(vps->pinned != 0);
vmw_surface_unreference(&vps->surf);
}
}
if (!vps->surf) {
ret = vmw_surface_gb_priv_define
(crtc->dev,
/* Kernel visible only */
0,
content_srf.flags,
content_srf.format,
true, /* a scanout buffer */
content_srf.mip_levels[0],
content_srf.multisample_count,
0,
display_base_size,
&vps->surf);
if (ret != 0) {
DRM_ERROR("Couldn't allocate STDU surface.\n");
return ret;
}
}
} else {
/*
* prepare_fb and clean_fb should only take care of pinning
* and unpinning. References are tracked by state objects.
* The only time we add a reference in prepare_fb is if the
* state object doesn't have a reference to begin with
*/
if (vps->surf) {
WARN_ON(vps->pinned != 0);
vmw_surface_unreference(&vps->surf);
}
vps->surf = vmw_surface_reference(new_vfbs->surface);
}
if (vps->surf) {
/* Pin new surface before flipping */
ret = vmw_resource_pin(&vps->surf->res, false);
if (ret)
goto out_srf_unref;
vps->pinned++;
}
vps->content_fb_type = new_content_type;
/*
* This should only happen if the DMA buf is too large to create a
* proxy surface for.
* If we are a 2D VM with a DMA buffer then we have to use CPU blit
* so cache these mappings
*/
if (vps->content_fb_type == SEPARATE_DMA &&
!(dev_priv->capabilities & SVGA_CAP_3D)) {
ret = ttm_bo_kmap(&vps->surf->res.backup->base, 0,
vps->surf->res.backup->base.num_pages,
&vps->host_map);
if (ret) {
DRM_ERROR("Failed to map display buffer to CPU\n");
goto out_srf_unpin;
}
vps->cpp = new_fb->pitches[0] / new_fb->width;
}
return 0;
out_srf_unpin:
vmw_resource_unpin(&vps->surf->res);
vps->pinned--;
out_srf_unref:
vmw_surface_unreference(&vps->surf);
return ret;
}
/**
* vmw_stdu_primary_plane_atomic_update - formally switches STDU to new plane
*
* @plane: display plane
* @old_state: Only used to get crtc info
*
* Formally update stdu->display_srf to the new plane, and bind the new
* plane STDU. This function is called during the commit phase when
* all the preparation have been done and all the configurations have
* been checked.
*/
static void
vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct vmw_private *dev_priv;
struct vmw_screen_target_display_unit *stdu;
struct vmw_plane_state *vps = vmw_plane_state_to_vps(plane->state);
struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc;
int ret;
stdu = vmw_crtc_to_stdu(crtc);
dev_priv = vmw_priv(crtc->dev);
stdu->display_srf = vps->surf;
stdu->content_fb_type = vps->content_fb_type;
stdu->cpp = vps->cpp;
memcpy(&stdu->host_map, &vps->host_map, sizeof(vps->host_map));
if (!stdu->defined)
return;
if (plane->state->fb)
ret = vmw_stdu_bind_st(dev_priv, stdu, &stdu->display_srf->res);
else
ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
/*
* We cannot really fail this function, so if we do, then output an
* error and quit
*/
if (ret)
DRM_ERROR("Failed to bind surface to STDU.\n");
else
crtc->primary->fb = plane->state->fb;
ret = vmw_stdu_update_st(dev_priv, stdu);
if (ret)
DRM_ERROR("Failed to update STDU.\n");
}
static const struct drm_plane_funcs vmw_stdu_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = vmw_du_primary_plane_destroy,
.reset = vmw_du_plane_reset,
.atomic_duplicate_state = vmw_du_plane_duplicate_state,
.atomic_destroy_state = vmw_du_plane_destroy_state,
};
static const struct drm_plane_funcs vmw_stdu_cursor_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = vmw_du_cursor_plane_destroy,
.reset = vmw_du_plane_reset,
.atomic_duplicate_state = vmw_du_plane_duplicate_state,
.atomic_destroy_state = vmw_du_plane_destroy_state,
};
/*
* Atomic Helpers
*/
static const struct
drm_plane_helper_funcs vmw_stdu_cursor_plane_helper_funcs = {
.atomic_check = vmw_du_cursor_plane_atomic_check,
.atomic_update = vmw_du_cursor_plane_atomic_update,
.prepare_fb = vmw_du_cursor_plane_prepare_fb,
.cleanup_fb = vmw_du_plane_cleanup_fb,
};
static const struct
drm_plane_helper_funcs vmw_stdu_primary_plane_helper_funcs = {
.atomic_check = vmw_du_primary_plane_atomic_check,
.atomic_update = vmw_stdu_primary_plane_atomic_update,
.prepare_fb = vmw_stdu_primary_plane_prepare_fb,
.cleanup_fb = vmw_stdu_primary_plane_cleanup_fb,
};
static const struct drm_crtc_helper_funcs vmw_stdu_crtc_helper_funcs = {
.prepare = vmw_stdu_crtc_helper_prepare,
.mode_set_nofb = vmw_stdu_crtc_mode_set_nofb,
.atomic_check = vmw_du_crtc_atomic_check,
.atomic_begin = vmw_du_crtc_atomic_begin,
.atomic_flush = vmw_du_crtc_atomic_flush,
.atomic_enable = vmw_stdu_crtc_atomic_enable,
.atomic_disable = vmw_stdu_crtc_atomic_disable,
};
/**
* vmw_stdu_init - Sets up a Screen Target Display Unit
*
* @dev_priv: VMW DRM device
* @unit: unit number range from 0 to VMWGFX_NUM_DISPLAY_UNITS
*
* This function is called once per CRTC, and allocates one Screen Target
* display unit to represent that CRTC. Since the SVGA device does not separate
* out encoder and connector, they are represented as part of the STDU as well.
*/
static int vmw_stdu_init(struct vmw_private *dev_priv, unsigned unit)
{
struct vmw_screen_target_display_unit *stdu;
struct drm_device *dev = dev_priv->dev;
struct drm_connector *connector;
struct drm_encoder *encoder;
struct drm_plane *primary, *cursor;
struct drm_crtc *crtc;
int ret;
stdu = kzalloc(sizeof(*stdu), GFP_KERNEL);
if (!stdu)
return -ENOMEM;
stdu->base.unit = unit;
crtc = &stdu->base.crtc;
encoder = &stdu->base.encoder;
connector = &stdu->base.connector;
primary = &stdu->base.primary;
cursor = &stdu->base.cursor;
stdu->base.pref_active = (unit == 0);
stdu->base.pref_width = dev_priv->initial_width;
stdu->base.pref_height = dev_priv->initial_height;
/*
* Remove this after enabling atomic because property values can
* only exist in a state object
*/
stdu->base.is_implicit = false;
/* Initialize primary plane */
vmw_du_plane_reset(primary);
ret = drm_universal_plane_init(dev, primary,
0, &vmw_stdu_plane_funcs,
vmw_primary_plane_formats,
ARRAY_SIZE(vmw_primary_plane_formats),
NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
if (ret) {
DRM_ERROR("Failed to initialize primary plane");
goto err_free;
}
drm_plane_helper_add(primary, &vmw_stdu_primary_plane_helper_funcs);
/* Initialize cursor plane */
vmw_du_plane_reset(cursor);
ret = drm_universal_plane_init(dev, cursor,
0, &vmw_stdu_cursor_funcs,
vmw_cursor_plane_formats,
ARRAY_SIZE(vmw_cursor_plane_formats),
NULL, DRM_PLANE_TYPE_CURSOR, NULL);
if (ret) {
DRM_ERROR("Failed to initialize cursor plane");
drm_plane_cleanup(&stdu->base.primary);
goto err_free;
}
drm_plane_helper_add(cursor, &vmw_stdu_cursor_plane_helper_funcs);
vmw_du_connector_reset(connector);
ret = drm_connector_init(dev, connector, &vmw_stdu_connector_funcs,
DRM_MODE_CONNECTOR_VIRTUAL);
if (ret) {
DRM_ERROR("Failed to initialize connector\n");
goto err_free;
}
drm_connector_helper_add(connector, &vmw_stdu_connector_helper_funcs);
connector->status = vmw_du_connector_detect(connector, false);
vmw_connector_state_to_vcs(connector->state)->is_implicit = false;
ret = drm_encoder_init(dev, encoder, &vmw_stdu_encoder_funcs,
DRM_MODE_ENCODER_VIRTUAL, NULL);
if (ret) {
DRM_ERROR("Failed to initialize encoder\n");
goto err_free_connector;
}
(void) drm_mode_connector_attach_encoder(connector, encoder);
encoder->possible_crtcs = (1 << unit);
encoder->possible_clones = 0;
ret = drm_connector_register(connector);
if (ret) {
DRM_ERROR("Failed to register connector\n");
goto err_free_encoder;
}
vmw_du_crtc_reset(crtc);
ret = drm_crtc_init_with_planes(dev, crtc, &stdu->base.primary,
&stdu->base.cursor,
&vmw_stdu_crtc_funcs, NULL);
if (ret) {
DRM_ERROR("Failed to initialize CRTC\n");
goto err_free_unregister;
}
drm_crtc_helper_add(crtc, &vmw_stdu_crtc_helper_funcs);
drm_mode_crtc_set_gamma_size(crtc, 256);
drm_object_attach_property(&connector->base,
dev_priv->hotplug_mode_update_property, 1);
drm_object_attach_property(&connector->base,
dev->mode_config.suggested_x_property, 0);
drm_object_attach_property(&connector->base,
dev->mode_config.suggested_y_property, 0);
if (dev_priv->implicit_placement_property)
drm_object_attach_property
(&connector->base,
dev_priv->implicit_placement_property,
stdu->base.is_implicit);
return 0;
err_free_unregister:
drm_connector_unregister(connector);
err_free_encoder:
drm_encoder_cleanup(encoder);
err_free_connector:
drm_connector_cleanup(connector);
err_free:
kfree(stdu);
return ret;
}
/**
* vmw_stdu_destroy - Cleans up a vmw_screen_target_display_unit
*
* @stdu: Screen Target Display Unit to be destroyed
*
* Clean up after vmw_stdu_init
*/
static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu)
{
vmw_du_cleanup(&stdu->base);
kfree(stdu);
}
/******************************************************************************
* Screen Target Display KMS Functions
*
* These functions are called by the common KMS code in vmwgfx_kms.c
*****************************************************************************/
/**
* vmw_kms_stdu_init_display - Initializes a Screen Target based display
*
* @dev_priv: VMW DRM device
*
* This function initialize a Screen Target based display device. It checks
* the capability bits to make sure the underlying hardware can support
* screen targets, and then creates the maximum number of CRTCs, a.k.a Display
* Units, as supported by the display hardware.
*
* RETURNS:
* 0 on success, error code otherwise
*/
int vmw_kms_stdu_init_display(struct vmw_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
int i, ret;
/* Do nothing if Screen Target support is turned off */
if (!VMWGFX_ENABLE_SCREEN_TARGET_OTABLE)
return -ENOSYS;
if (!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS))
return -ENOSYS;
ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
if (unlikely(ret != 0))
return ret;
dev_priv->active_display_unit = vmw_du_screen_target;
if (dev_priv->capabilities & SVGA_CAP_3D) {
/*
* For 3D VMs, display (scanout) buffer size is the smaller of
* max texture and max STDU
*/
uint32_t max_width, max_height;
max_width = min(dev_priv->texture_max_width,
dev_priv->stdu_max_width);
max_height = min(dev_priv->texture_max_height,
dev_priv->stdu_max_height);
dev->mode_config.max_width = max_width;
dev->mode_config.max_height = max_height;
} else {
/*
* Given various display aspect ratios, there's no way to
* estimate these using prim_bb_mem. So just set these to
* something arbitrarily large and we will reject any layout
* that doesn't fit prim_bb_mem later
*/
dev->mode_config.max_width = 8192;
dev->mode_config.max_height = 8192;
}
vmw_kms_create_implicit_placement_property(dev_priv, false);
for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) {
ret = vmw_stdu_init(dev_priv, i);
if (unlikely(ret != 0)) {
DRM_ERROR("Failed to initialize STDU %d", i);
return ret;
}
}
DRM_INFO("Screen Target Display device initialized\n");
return 0;
}