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linux-stable/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
Zack Rusin 2e10cdc6e8 drm/vmwgfx: Remove explicit and broken vblank handling 
The explicit vblank handling was never finished. The driver never had
the full implementation of vblank and what was there is emulated
by DRM when the driver doesn't pretend to be implementing it itself.

Let DRM handle the vblank emulation and stop pretending the driver is
doing anything special with vblank. In the future it would make sense
to implement helpers for full vblank handling because vkms and
amdgpu_vkms already have that code. Exporting it to common helpers and
having all three drivers share it would make sense (that would be largely
just to allow more of igt to run).

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Maaz Mombasawala <mombasawalam@vmware.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Reviewed-by: Michael Banack <banackm@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221022040236.616490-15-zack@kde.org
2022-10-25 12:42:29 -04:00

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// SPDX-License-Identifier: GPL-2.0 OR MIT
/**************************************************************************
*
* Copyright 2011-2022 VMware, Inc., Palo Alto, CA., USA
*
* 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 <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_damage_helper.h>
#include <drm/drm_fourcc.h>
#include "vmwgfx_kms.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_bo_blit {
uint32 header;
SVGAFifoCmdBlitGMRFBToScreen body;
};
struct vmw_kms_sou_dirty_cmd {
SVGA3dCmdHeader header;
SVGA3dCmdBlitSurfaceToScreen body;
};
struct vmw_kms_sou_define_gmrfb {
uint32_t header;
SVGAFifoCmdDefineGMRFB body;
};
/*
* 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_buffer_object *buffer; /**< Backing store buffer */
bool defined;
};
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));
}
/*
* 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,
int x, int 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_CMD_RESERVE(dev_priv, fifo_size);
if (unlikely(cmd == NULL))
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;
cmd->obj.root.x = x;
cmd->obj.root.y = y;
sou->base.set_gui_x = cmd->obj.root.x;
sou->base.set_gui_y = cmd->obj.root.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_cmd_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_CMD_RESERVE(dev_priv, fifo_size);
if (unlikely(cmd == NULL))
return -ENOMEM;
memset(cmd, 0, fifo_size);
cmd->header.cmdType = SVGA_CMD_DESTROY_SCREEN;
cmd->body.screenId = sou->base.unit;
vmw_cmd_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;
}
/**
* vmw_sou_crtc_mode_set_nofb - Create new screen
*
* @crtc: CRTC associated with the new screen
*
* This function creates/destroys a screen. This function cannot fail, so if
* somehow we run into a failure, just do the best we can to get out.
*/
static void vmw_sou_crtc_mode_set_nofb(struct drm_crtc *crtc)
{
struct vmw_private *dev_priv;
struct vmw_screen_object_unit *sou;
struct vmw_framebuffer *vfb;
struct drm_framebuffer *fb;
struct drm_plane_state *ps;
struct vmw_plane_state *vps;
int ret;
sou = vmw_crtc_to_sou(crtc);
dev_priv = vmw_priv(crtc->dev);
ps = crtc->primary->state;
fb = ps->fb;
vps = vmw_plane_state_to_vps(ps);
vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
if (sou->defined) {
ret = vmw_sou_fifo_destroy(dev_priv, sou);
if (ret) {
DRM_ERROR("Failed to destroy Screen Object\n");
return;
}
}
if (vfb) {
struct drm_connector_state *conn_state;
struct vmw_connector_state *vmw_conn_state;
int x, y;
sou->buffer = vps->bo;
sou->buffer_size = vps->bo_size;
conn_state = sou->base.connector.state;
vmw_conn_state = vmw_connector_state_to_vcs(conn_state);
x = vmw_conn_state->gui_x;
y = vmw_conn_state->gui_y;
ret = vmw_sou_fifo_create(dev_priv, sou, x, y, &crtc->mode);
if (ret)
DRM_ERROR("Failed to define Screen Object %dx%d\n",
crtc->x, crtc->y);
} else {
sou->buffer = NULL;
sou->buffer_size = 0;
}
}
/**
* vmw_sou_crtc_helper_prepare - Noop
*
* @crtc: CRTC associated with the new screen
*
* Prepares the CRTC for a mode set, but we don't need to do anything here.
*/
static void vmw_sou_crtc_helper_prepare(struct drm_crtc *crtc)
{
}
/**
* vmw_sou_crtc_atomic_enable - Noop
*
* @crtc: CRTC associated with the new screen
* @state: Unused
*
* This is called after a mode set has been completed.
*/
static void vmw_sou_crtc_atomic_enable(struct drm_crtc *crtc,
struct drm_atomic_state *state)
{
}
/**
* vmw_sou_crtc_atomic_disable - Turns off CRTC
*
* @crtc: CRTC to be turned off
* @state: Unused
*/
static void vmw_sou_crtc_atomic_disable(struct drm_crtc *crtc,
struct drm_atomic_state *state)
{
struct vmw_private *dev_priv;
struct vmw_screen_object_unit *sou;
int ret;
if (!crtc) {
DRM_ERROR("CRTC is NULL\n");
return;
}
sou = vmw_crtc_to_sou(crtc);
dev_priv = vmw_priv(crtc->dev);
if (sou->defined) {
ret = vmw_sou_fifo_destroy(dev_priv, sou);
if (ret)
DRM_ERROR("Failed to destroy Screen Object\n");
}
}
static const struct drm_crtc_funcs vmw_screen_object_crtc_funcs = {
.gamma_set = vmw_du_crtc_gamma_set,
.destroy = vmw_sou_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 = drm_atomic_helper_set_config,
.page_flip = drm_atomic_helper_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 const 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 const struct drm_connector_funcs vmw_sou_connector_funcs = {
.dpms = vmw_du_connector_dpms,
.detect = vmw_du_connector_detect,
.fill_modes = vmw_du_connector_fill_modes,
.destroy = vmw_sou_connector_destroy,
.reset = vmw_du_connector_reset,
.atomic_duplicate_state = vmw_du_connector_duplicate_state,
.atomic_destroy_state = vmw_du_connector_destroy_state,
};
static const struct
drm_connector_helper_funcs vmw_sou_connector_helper_funcs = {
};
/*
* Screen Object Display Plane Functions
*/
/**
* vmw_sou_primary_plane_cleanup_fb - Frees sou backing buffer
*
* @plane: display plane
* @old_state: Contains the FB to clean up
*
* Unpins the display surface
*
* Returns 0 on success
*/
static void
vmw_sou_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);
struct drm_crtc *crtc = plane->state->crtc ?
plane->state->crtc : old_state->crtc;
if (vps->bo)
vmw_bo_unpin(vmw_priv(crtc->dev), vps->bo, false);
vmw_bo_unreference(&vps->bo);
vps->bo_size = 0;
vmw_du_plane_cleanup_fb(plane, old_state);
}
/**
* vmw_sou_primary_plane_prepare_fb - allocate backing buffer
*
* @plane: display plane
* @new_state: info on the new plane state, including the FB
*
* The SOU backing buffer is our equivalent of the display plane.
*
* Returns 0 on success
*/
static int
vmw_sou_primary_plane_prepare_fb(struct drm_plane *plane,
struct drm_plane_state *new_state)
{
struct drm_framebuffer *new_fb = new_state->fb;
struct drm_crtc *crtc = plane->state->crtc ?: new_state->crtc;
struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
struct vmw_private *dev_priv;
size_t size;
int ret;
if (!new_fb) {
vmw_bo_unreference(&vps->bo);
vps->bo_size = 0;
return 0;
}
size = new_state->crtc_w * new_state->crtc_h * 4;
dev_priv = vmw_priv(crtc->dev);
if (vps->bo) {
if (vps->bo_size == size) {
/*
* Note that this might temporarily up the pin-count
* to 2, until cleanup_fb() is called.
*/
return vmw_bo_pin_in_vram(dev_priv, vps->bo,
true);
}
vmw_bo_unreference(&vps->bo);
vps->bo_size = 0;
}
vmw_svga_enable(dev_priv);
/* 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_bo_create(dev_priv, size,
&vmw_vram_placement,
false, true, &vmw_bo_bo_free, &vps->bo);
vmw_overlay_resume_all(dev_priv);
if (ret) {
vps->bo = NULL; /* vmw_bo_init frees on error */
return ret;
}
vps->bo_size = size;
/*
* TTM already thinks the buffer is pinned, but make sure the
* pin_count is upped.
*/
return vmw_bo_pin_in_vram(dev_priv, vps->bo, true);
}
static uint32_t vmw_sou_bo_fifo_size(struct vmw_du_update_plane *update,
uint32_t num_hits)
{
return sizeof(struct vmw_kms_sou_define_gmrfb) +
sizeof(struct vmw_kms_sou_bo_blit) * num_hits;
}
static uint32_t vmw_sou_bo_define_gmrfb(struct vmw_du_update_plane *update,
void *cmd)
{
struct vmw_framebuffer_bo *vfbbo =
container_of(update->vfb, typeof(*vfbbo), base);
struct vmw_kms_sou_define_gmrfb *gmr = cmd;
int depth = update->vfb->base.format->depth;
/* 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;
gmr->header = SVGA_CMD_DEFINE_GMRFB;
gmr->body.format.bitsPerPixel = update->vfb->base.format->cpp[0] * 8;
gmr->body.format.colorDepth = depth;
gmr->body.format.reserved = 0;
gmr->body.bytesPerLine = update->vfb->base.pitches[0];
vmw_bo_get_guest_ptr(&vfbbo->buffer->base, &gmr->body.ptr);
return sizeof(*gmr);
}
static uint32_t vmw_sou_bo_populate_clip(struct vmw_du_update_plane *update,
void *cmd, struct drm_rect *clip,
uint32_t fb_x, uint32_t fb_y)
{
struct vmw_kms_sou_bo_blit *blit = cmd;
blit->header = SVGA_CMD_BLIT_GMRFB_TO_SCREEN;
blit->body.destScreenId = update->du->unit;
blit->body.srcOrigin.x = fb_x;
blit->body.srcOrigin.y = fb_y;
blit->body.destRect.left = clip->x1;
blit->body.destRect.top = clip->y1;
blit->body.destRect.right = clip->x2;
blit->body.destRect.bottom = clip->y2;
return sizeof(*blit);
}
static uint32_t vmw_stud_bo_post_clip(struct vmw_du_update_plane *update,
void *cmd, struct drm_rect *bb)
{
return 0;
}
/**
* vmw_sou_plane_update_bo - Update display unit for bo backed fb.
* @dev_priv: Device private.
* @plane: Plane state.
* @old_state: Old plane state.
* @vfb: Framebuffer which is blitted to display unit.
* @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj.
* The returned fence pointer may be NULL in which case the device
* has already synchronized.
*
* Return: 0 on success or a negative error code on failure.
*/
static int vmw_sou_plane_update_bo(struct vmw_private *dev_priv,
struct drm_plane *plane,
struct drm_plane_state *old_state,
struct vmw_framebuffer *vfb,
struct vmw_fence_obj **out_fence)
{
struct vmw_du_update_plane_buffer bo_update;
memset(&bo_update, 0, sizeof(struct vmw_du_update_plane_buffer));
bo_update.base.plane = plane;
bo_update.base.old_state = old_state;
bo_update.base.dev_priv = dev_priv;
bo_update.base.du = vmw_crtc_to_du(plane->state->crtc);
bo_update.base.vfb = vfb;
bo_update.base.out_fence = out_fence;
bo_update.base.mutex = NULL;
bo_update.base.cpu_blit = false;
bo_update.base.intr = true;
bo_update.base.calc_fifo_size = vmw_sou_bo_fifo_size;
bo_update.base.post_prepare = vmw_sou_bo_define_gmrfb;
bo_update.base.clip = vmw_sou_bo_populate_clip;
bo_update.base.post_clip = vmw_stud_bo_post_clip;
return vmw_du_helper_plane_update(&bo_update.base);
}
static uint32_t vmw_sou_surface_fifo_size(struct vmw_du_update_plane *update,
uint32_t num_hits)
{
return sizeof(struct vmw_kms_sou_dirty_cmd) + sizeof(SVGASignedRect) *
num_hits;
}
static uint32_t vmw_sou_surface_post_prepare(struct vmw_du_update_plane *update,
void *cmd)
{
struct vmw_du_update_plane_surface *srf_update;
srf_update = container_of(update, typeof(*srf_update), base);
/*
* SOU SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN is special in the sense that
* its bounding box is filled before iterating over all the clips. So
* store the FIFO start address and revisit to fill the details.
*/
srf_update->cmd_start = cmd;
return 0;
}
static uint32_t vmw_sou_surface_pre_clip(struct vmw_du_update_plane *update,
void *cmd, uint32_t num_hits)
{
struct vmw_kms_sou_dirty_cmd *blit = cmd;
struct vmw_framebuffer_surface *vfbs;
vfbs = container_of(update->vfb, typeof(*vfbs), base);
blit->header.id = SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN;
blit->header.size = sizeof(blit->body) + sizeof(SVGASignedRect) *
num_hits;
blit->body.srcImage.sid = vfbs->surface->res.id;
blit->body.destScreenId = update->du->unit;
/* Update the source and destination bounding box later in post_clip */
blit->body.srcRect.left = 0;
blit->body.srcRect.top = 0;
blit->body.srcRect.right = 0;
blit->body.srcRect.bottom = 0;
blit->body.destRect.left = 0;
blit->body.destRect.top = 0;
blit->body.destRect.right = 0;
blit->body.destRect.bottom = 0;
return sizeof(*blit);
}
static uint32_t vmw_sou_surface_clip_rect(struct vmw_du_update_plane *update,
void *cmd, struct drm_rect *clip,
uint32_t src_x, uint32_t src_y)
{
SVGASignedRect *rect = cmd;
/*
* rects are relative to dest bounding box rect on screen object, so
* translate to it later in post_clip
*/
rect->left = clip->x1;
rect->top = clip->y1;
rect->right = clip->x2;
rect->bottom = clip->y2;
return sizeof(*rect);
}
static uint32_t vmw_sou_surface_post_clip(struct vmw_du_update_plane *update,
void *cmd, struct drm_rect *bb)
{
struct vmw_du_update_plane_surface *srf_update;
struct drm_plane_state *state = update->plane->state;
struct drm_rect src_bb;
struct vmw_kms_sou_dirty_cmd *blit;
SVGASignedRect *rect;
uint32_t num_hits;
int translate_src_x;
int translate_src_y;
int i;
srf_update = container_of(update, typeof(*srf_update), base);
blit = srf_update->cmd_start;
rect = (SVGASignedRect *)&blit[1];
num_hits = (blit->header.size - sizeof(blit->body))/
sizeof(SVGASignedRect);
src_bb = *bb;
/* To translate bb back to fb src coord */
translate_src_x = (state->src_x >> 16) - state->crtc_x;
translate_src_y = (state->src_y >> 16) - state->crtc_y;
drm_rect_translate(&src_bb, translate_src_x, translate_src_y);
blit->body.srcRect.left = src_bb.x1;
blit->body.srcRect.top = src_bb.y1;
blit->body.srcRect.right = src_bb.x2;
blit->body.srcRect.bottom = src_bb.y2;
blit->body.destRect.left = bb->x1;
blit->body.destRect.top = bb->y1;
blit->body.destRect.right = bb->x2;
blit->body.destRect.bottom = bb->y2;
/* rects are relative to dest bb rect */
for (i = 0; i < num_hits; i++) {
rect->left -= bb->x1;
rect->top -= bb->y1;
rect->right -= bb->x1;
rect->bottom -= bb->y1;
rect++;
}
return 0;
}
/**
* vmw_sou_plane_update_surface - Update display unit for surface backed fb.
* @dev_priv: Device private.
* @plane: Plane state.
* @old_state: Old plane state.
* @vfb: Framebuffer which is blitted to display unit
* @out_fence: If non-NULL, will return a ref-counted pointer to vmw_fence_obj.
* The returned fence pointer may be NULL in which case the device
* has already synchronized.
*
* Return: 0 on success or a negative error code on failure.
*/
static int vmw_sou_plane_update_surface(struct vmw_private *dev_priv,
struct drm_plane *plane,
struct drm_plane_state *old_state,
struct vmw_framebuffer *vfb,
struct vmw_fence_obj **out_fence)
{
struct vmw_du_update_plane_surface srf_update;
memset(&srf_update, 0, sizeof(struct vmw_du_update_plane_surface));
srf_update.base.plane = plane;
srf_update.base.old_state = old_state;
srf_update.base.dev_priv = dev_priv;
srf_update.base.du = vmw_crtc_to_du(plane->state->crtc);
srf_update.base.vfb = vfb;
srf_update.base.out_fence = out_fence;
srf_update.base.mutex = &dev_priv->cmdbuf_mutex;
srf_update.base.cpu_blit = false;
srf_update.base.intr = true;
srf_update.base.calc_fifo_size = vmw_sou_surface_fifo_size;
srf_update.base.post_prepare = vmw_sou_surface_post_prepare;
srf_update.base.pre_clip = vmw_sou_surface_pre_clip;
srf_update.base.clip = vmw_sou_surface_clip_rect;
srf_update.base.post_clip = vmw_sou_surface_post_clip;
return vmw_du_helper_plane_update(&srf_update.base);
}
static void
vmw_sou_primary_plane_atomic_update(struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, plane);
struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane);
struct drm_crtc *crtc = new_state->crtc;
struct vmw_fence_obj *fence = NULL;
int ret;
/* In case of device error, maintain consistent atomic state */
if (crtc && new_state->fb) {
struct vmw_private *dev_priv = vmw_priv(crtc->dev);
struct vmw_framebuffer *vfb =
vmw_framebuffer_to_vfb(new_state->fb);
if (vfb->bo)
ret = vmw_sou_plane_update_bo(dev_priv, plane,
old_state, vfb, &fence);
else
ret = vmw_sou_plane_update_surface(dev_priv, plane,
old_state, vfb,
&fence);
if (ret != 0)
DRM_ERROR("Failed to update screen.\n");
} else {
/* Do nothing when fb and crtc is NULL (blank crtc) */
return;
}
if (fence)
vmw_fence_obj_unreference(&fence);
}
static const struct drm_plane_funcs vmw_sou_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_sou_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_sou_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_cursor_plane_cleanup_fb,
};
static const struct
drm_plane_helper_funcs vmw_sou_primary_plane_helper_funcs = {
.atomic_check = vmw_du_primary_plane_atomic_check,
.atomic_update = vmw_sou_primary_plane_atomic_update,
.prepare_fb = vmw_sou_primary_plane_prepare_fb,
.cleanup_fb = vmw_sou_primary_plane_cleanup_fb,
};
static const struct drm_crtc_helper_funcs vmw_sou_crtc_helper_funcs = {
.prepare = vmw_sou_crtc_helper_prepare,
.mode_set_nofb = vmw_sou_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_sou_crtc_atomic_enable,
.atomic_disable = vmw_sou_crtc_atomic_disable,
};
static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit)
{
struct vmw_screen_object_unit *sou;
struct drm_device *dev = &dev_priv->drm;
struct drm_connector *connector;
struct drm_encoder *encoder;
struct drm_plane *primary;
struct vmw_cursor_plane *cursor;
struct drm_crtc *crtc;
int ret;
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;
primary = &sou->base.primary;
cursor = &sou->base.cursor;
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;
/*
* Remove this after enabling atomic because property values can
* only exist in a state object
*/
sou->base.is_implicit = false;
/* Initialize primary plane */
ret = drm_universal_plane_init(dev, primary,
0, &vmw_sou_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_sou_primary_plane_helper_funcs);
drm_plane_enable_fb_damage_clips(primary);
/* Initialize cursor plane */
ret = drm_universal_plane_init(dev, &cursor->base,
0, &vmw_sou_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(&sou->base.primary);
goto err_free;
}
drm_plane_helper_add(&cursor->base, &vmw_sou_cursor_plane_helper_funcs);
ret = drm_connector_init(dev, connector, &vmw_sou_connector_funcs,
DRM_MODE_CONNECTOR_VIRTUAL);
if (ret) {
DRM_ERROR("Failed to initialize connector\n");
goto err_free;
}
drm_connector_helper_add(connector, &vmw_sou_connector_helper_funcs);
connector->status = vmw_du_connector_detect(connector, true);
ret = drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs,
DRM_MODE_ENCODER_VIRTUAL, NULL);
if (ret) {
DRM_ERROR("Failed to initialize encoder\n");
goto err_free_connector;
}
(void) drm_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;
}
ret = drm_crtc_init_with_planes(dev, crtc, primary,
&cursor->base,
&vmw_screen_object_crtc_funcs, NULL);
if (ret) {
DRM_ERROR("Failed to initialize CRTC\n");
goto err_free_unregister;
}
drm_crtc_helper_add(crtc, &vmw_sou_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);
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(sou);
return ret;
}
int vmw_kms_sou_init_display(struct vmw_private *dev_priv)
{
struct drm_device *dev = &dev_priv->drm;
int i;
if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) {
return -ENOSYS;
}
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_mode_config_reset(dev);
return 0;
}
static int do_bo_define_gmrfb(struct vmw_private *dev_priv,
struct vmw_framebuffer *framebuffer)
{
struct vmw_buffer_object *buf =
container_of(framebuffer, struct vmw_framebuffer_bo,
base)->buffer;
int depth = framebuffer->base.format->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_CMD_RESERVE(dev_priv, sizeof(*cmd));
if (!cmd)
return -ENOMEM;
cmd->header = SVGA_CMD_DEFINE_GMRFB;
cmd->body.format.bitsPerPixel = framebuffer->base.format->cpp[0] * 8;
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_cmd_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;
if (!dirty->num_hits) {
vmw_cmd_commit(dirty->dev_priv, 0);
return;
}
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_cmd_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.
* @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_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 drm_crtc *crtc)
{
struct vmw_framebuffer_surface *vfbs =
container_of(framebuffer, typeof(*vfbs), base);
struct vmw_kms_sou_surface_dirty sdirty;
DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
int ret;
if (!srf)
srf = &vfbs->surface->res;
ret = vmw_validation_add_resource(&val_ctx, srf, 0, VMW_RES_DIRTY_NONE,
NULL, NULL);
if (ret)
return ret;
ret = vmw_validation_prepare(&val_ctx, &dev_priv->cmdbuf_mutex, true);
if (ret)
goto out_unref;
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.base.crtc = crtc;
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_validation_finish(dev_priv, NULL, &val_ctx, out_fence,
NULL);
return ret;
out_unref:
vmw_validation_unref_lists(&val_ctx);
return ret;
}
/**
* vmw_sou_bo_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_bo_fifo_commit(struct vmw_kms_dirty *dirty)
{
if (!dirty->num_hits) {
vmw_cmd_commit(dirty->dev_priv, 0);
return;
}
vmw_cmd_commit(dirty->dev_priv,
sizeof(struct vmw_kms_sou_bo_blit) *
dirty->num_hits);
}
/**
* vmw_sou_bo_clip - Callback to encode a readback cliprect.
*
* @dirty: The closure structure
*
* Encodes a BLIT_GMRFB_TO_SCREEN cliprect.
*/
static void vmw_sou_bo_clip(struct vmw_kms_dirty *dirty)
{
struct vmw_kms_sou_bo_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_sou_do_bo_dirty - Dirty part of a buffer-object backed framebuffer
*
* @dev_priv: Pointer to the device private structure.
* @framebuffer: Pointer to the buffer-object backed framebuffer.
* @clips: Array of clip rects.
* @vclips: Alternate array of clip rects. Either @clips or @vclips must
* be NULL.
* @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.
* @crtc: If crtc is passed, perform bo dirty on that crtc only.
*
* Returns 0 on success, negative error code on failure. -ERESTARTSYS if
* interrupted.
*/
int vmw_kms_sou_do_bo_dirty(struct vmw_private *dev_priv,
struct vmw_framebuffer *framebuffer,
struct drm_clip_rect *clips,
struct drm_vmw_rect *vclips,
unsigned num_clips, int increment,
bool interruptible,
struct vmw_fence_obj **out_fence,
struct drm_crtc *crtc)
{
struct vmw_buffer_object *buf =
container_of(framebuffer, struct vmw_framebuffer_bo,
base)->buffer;
struct vmw_kms_dirty dirty;
DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
int ret;
ret = vmw_validation_add_bo(&val_ctx, buf, false, false);
if (ret)
return ret;
ret = vmw_validation_prepare(&val_ctx, NULL, interruptible);
if (ret)
goto out_unref;
ret = do_bo_define_gmrfb(dev_priv, framebuffer);
if (unlikely(ret != 0))
goto out_revert;
dirty.crtc = crtc;
dirty.fifo_commit = vmw_sou_bo_fifo_commit;
dirty.clip = vmw_sou_bo_clip;
dirty.fifo_reserve_size = sizeof(struct vmw_kms_sou_bo_blit) *
num_clips;
ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
0, 0, num_clips, increment, &dirty);
vmw_kms_helper_validation_finish(dev_priv, NULL, &val_ctx, out_fence,
NULL);
return ret;
out_revert:
vmw_validation_revert(&val_ctx);
out_unref:
vmw_validation_unref_lists(&val_ctx);
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)
{
if (!dirty->num_hits) {
vmw_cmd_commit(dirty->dev_priv, 0);
return;
}
vmw_cmd_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 buffer-object 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 buffer-object 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.
* @crtc: If crtc is passed, readback on that crtc only.
*
* 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 drm_crtc *crtc)
{
struct vmw_buffer_object *buf =
container_of(vfb, struct vmw_framebuffer_bo, base)->buffer;
struct vmw_kms_dirty dirty;
DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
int ret;
ret = vmw_validation_add_bo(&val_ctx, buf, false, false);
if (ret)
return ret;
ret = vmw_validation_prepare(&val_ctx, NULL, true);
if (ret)
goto out_unref;
ret = do_bo_define_gmrfb(dev_priv, vfb);
if (unlikely(ret != 0))
goto out_revert;
dirty.crtc = crtc;
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_validation_finish(dev_priv, file_priv, &val_ctx, NULL,
user_fence_rep);
return ret;
out_revert:
vmw_validation_revert(&val_ctx);
out_unref:
vmw_validation_unref_lists(&val_ctx);
return ret;
}
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