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linux_dsm_epyc7002/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
Deepak Rawat ac3069e67f drm/vmwgfx: Move the stdu vblank event to atomic function 
Atomic ioctl can also send the same page flip flags as legacy ioctl.
In those cases also need to send the vblank event to userspace.

vmwgfx does not support flag DRM_MODE_PAGE_FLIP_ASYNC, so this flag is
never expected.

Signed-off-by: Deepak Rawat <drawat@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
2018-03-22 10:57:28 +01:00

1664 lines
46 KiB
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/******************************************************************************
*
* 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);
int ret;
if (!stdu->defined || !vmw_kms_crtc_flippable(dev_priv, crtc))
return -EINVAL;
ret = drm_atomic_helper_page_flip(crtc, new_fb, event, flags, ctx);
if (ret) {
DRM_ERROR("Page flip error %d.\n", ret);
return ret;
}
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.
* @crtc: If crtc is passed, perform stdu dma on that crtc only.
*
* 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 drm_crtc *crtc)
{
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;
}
ddirty.base.crtc = crtc;
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.
* @crtc: If crtc is passed, perform surface dirty on that crtc only.
*
* 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 drm_crtc *crtc)
{
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.base.crtc = crtc;
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_plane_state *vps = vmw_plane_state_to_vps(plane->state);
struct drm_crtc *crtc = plane->state->crtc;
struct vmw_screen_target_display_unit *stdu;
struct drm_pending_vblank_event *event;
struct vmw_private *dev_priv;
int ret;
/*
* We cannot really fail this function, so if we do, then output an
* error and maintain consistent atomic state.
*/
if (crtc && plane->state->fb) {
struct vmw_framebuffer *vfb =
vmw_framebuffer_to_vfb(plane->state->fb);
struct drm_vmw_rect vclips;
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));
vclips.x = crtc->x;
vclips.y = crtc->y;
vclips.w = crtc->mode.hdisplay;
vclips.h = crtc->mode.vdisplay;
ret = vmw_stdu_bind_st(dev_priv, stdu, &stdu->display_srf->res);
if (ret)
DRM_ERROR("Failed to bind surface to STDU.\n");
if (vfb->dmabuf)
ret = vmw_kms_stdu_dma(dev_priv, NULL, vfb, NULL, NULL,
&vclips, 1, 1, true, false,
crtc);
else
ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL,
&vclips, NULL, 0, 0,
1, 1, NULL, crtc);
if (ret)
DRM_ERROR("Failed to update STDU.\n");
crtc->primary->fb = plane->state->fb;
} else {
crtc = old_state->crtc;
stdu = vmw_crtc_to_stdu(crtc);
dev_priv = vmw_priv(crtc->dev);
/*
* When disabling a plane, CRTC and FB should always be NULL
* together, otherwise it's an error.
* Here primary plane is being disable so blank the screen
* target display unit, if not already done.
*/
if (!stdu->defined)
return;
ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
if (ret)
DRM_ERROR("Failed to blank STDU\n");
ret = vmw_stdu_update_st(dev_priv, stdu);
if (ret)
DRM_ERROR("Failed to update STDU.\n");
return;
}
event = crtc->state->event;
/*
* In case of failure and other cases, vblank event will be sent in
* vmw_du_crtc_atomic_flush.
*/
if (event && (ret == 0)) {
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 is NULL, then already sync.
*/
if (fence) {
ret = vmw_event_fence_action_queue(
file_priv, fence, &event->base,
&event->event.vbl.tv_sec,
&event->event.vbl.tv_usec,
true);
if (ret)
DRM_ERROR("Failed to queue event on fence.\n");
else
crtc->state->event = NULL;
vmw_fence_obj_unreference(&fence);
}
} else {
(void) vmw_fifo_flush(dev_priv, false);
}
}
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;
}
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