/******************************************************************************
*
* Copyright © 2014 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 "svga3d_surfacedefs.h"
#include <drm/drm_plane_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_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_fb: holds the rendered content, can be a surface or DMA buffer
* @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;
struct vmw_surface *display_srf;
struct drm_framebuffer *content_fb;
enum stdu_content_type content_fb_type;
bool defined;
};
static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu);
/******************************************************************************
* Screen Target Display Unit helper Functions
*****************************************************************************/
/**
* vmw_stdu_pin_display - pins the resource associated with the display surface
*
* @stdu: contains the display surface
*
* Since the display surface can either be a private surface allocated by us,
* or it can point to the content surface, we use this function to not pin the
* same resource twice.
*/
static int vmw_stdu_pin_display(struct vmw_screen_target_display_unit *stdu)
{
return vmw_resource_pin(&stdu->display_srf->res, false);
}
/**
* vmw_stdu_unpin_display - unpins the resource associated with display surface
*
* @stdu: contains the display surface
*
* If the display surface was privatedly allocated by
* vmw_surface_gb_priv_define() and not registered as a framebuffer, then it
* won't be automatically cleaned up when all the framebuffers are freed. As
* such, we have to explicitly call vmw_resource_unreference() to get it freed.
*/
static void vmw_stdu_unpin_display(struct vmw_screen_target_display_unit *stdu)
{
if (stdu->display_srf) {
struct vmw_resource *res = &stdu->display_srf->res;
vmw_resource_unpin(res);
if (stdu->content_fb_type != SAME_AS_DISPLAY) {
vmw_resource_unreference(&res);
stdu->content_fb_type = SAME_AS_DISPLAY;
}
stdu->display_srf = NULL;
}
}
/******************************************************************************
* 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_dma_update - Update DMA buf dirty region on the SVGA device
*
* @dev_priv: VMW DRM device
* @file_priv: Pointer to a drm file private structure
* @vfbs: VMW framebuffer surface that may need a DMA buf update
* @x: top/left corner of the content area to blit from
* @y: top/left corner of the content area to blit from
* @width: width of the blit area
* @height: height of the blit area
*
* The SVGA device may have the DMA buf cached, so before letting the
* device use it as the source image for a subsequent operation, we
* update the cached copy.
*
* RETURNs:
* 0 on success, error code on failure
*/
static int vmw_stdu_dma_update(struct vmw_private *dev_priv,
struct drm_file *file_priv,
struct vmw_framebuffer_surface *vfbs,
uint32_t x, uint32_t y,
uint32_t width, uint32_t height)
{
size_t fifo_size;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdUpdateGBImage body;
} img_update_cmd;
/* Only need to do this if the surface is a DMA buf proxy */
if (!vfbs->is_dmabuf_proxy)
return 0;
fifo_size = sizeof(img_update_cmd);
memset(&img_update_cmd, 0, fifo_size);
img_update_cmd.header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
img_update_cmd.header.size = sizeof(img_update_cmd.body);
img_update_cmd.body.image.sid = vfbs->surface->res.id;
img_update_cmd.body.box.x = x;
img_update_cmd.body.box.y = y;
img_update_cmd.body.box.w = width;
img_update_cmd.body.box.h = height;
img_update_cmd.body.box.d = 1;
return vmw_execbuf_process(file_priv, dev_priv, NULL,
(void *) &img_update_cmd,
fifo_size, 0, VMW_QUIRK_SRC_SID_OK,
NULL, NULL);
}
/**
* vmw_stdu_content_copy - copies an area from the content to display surface
*
* @dev_priv: VMW DRM device
* @file_priv: Pointer to a drm file private structure
* @stdu: STDU whose display surface will be blitted to
* @content_x: top/left corner of the content area to blit from
* @content_y: top/left corner of the content area to blit from
* @width: width of the blit area
* @height: height of the blit area
* @display_x: top/left corner of the display area to blit to
* @display_y: top/left corner of the display area to blit to
*
* Copies an area from the content surface to the display surface.
*
* RETURNs:
* 0 on success, error code on failure
*/
static int vmw_stdu_content_copy(struct vmw_private *dev_priv,
struct drm_file *file_priv,
struct vmw_screen_target_display_unit *stdu,
uint32_t content_x, uint32_t content_y,
uint32_t width, uint32_t height,
uint32_t display_x, uint32_t display_y)
{
struct vmw_framebuffer_surface *content_vfbs;
size_t fifo_size;
int ret;
void *cmd;
u32 quirks = VMW_QUIRK_DST_SID_OK;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdSurfaceDMA body;
SVGA3dCopyBox area;
SVGA3dCmdSurfaceDMASuffix suffix;
} surface_dma_cmd;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdSurfaceCopy body;
SVGA3dCopyBox area;
} surface_cpy_cmd;
/*
* Can only copy if content and display surfaces exist and are not
* the same surface
*/
if (stdu->display_srf == NULL || stdu->content_fb == NULL ||
stdu->content_fb_type == SAME_AS_DISPLAY) {
return -EINVAL;
}
if (stdu->content_fb_type == SEPARATE_DMA) {
struct vmw_framebuffer *content_vfb;
struct drm_vmw_size cur_size = {0};
const struct svga3d_surface_desc *desc;
enum SVGA3dSurfaceFormat format;
SVGA3dCmdSurfaceDMASuffix *suffix;
SVGAGuestPtr ptr;
content_vfb = vmw_framebuffer_to_vfb(stdu->content_fb);
cur_size.width = width;
cur_size.height = height;
cur_size.depth = 1;
/* Derive a SVGA3dSurfaceFormat for the DMA buf */
switch (content_vfb->base.bits_per_pixel) {
case 32:
format = SVGA3D_A8R8G8B8;
break;
case 24:
format = SVGA3D_X8R8G8B8;
break;
case 16:
format = SVGA3D_R5G6B5;
break;
case 15:
format = SVGA3D_A1R5G5B5;
break;
default:
DRM_ERROR("Invalid color depth: %d\n",
content_vfb->base.depth);
return -EINVAL;
}
desc = svga3dsurface_get_desc(format);
fifo_size = sizeof(surface_dma_cmd);
memset(&surface_dma_cmd, 0, fifo_size);
ptr.gmrId = content_vfb->user_handle;
ptr.offset = 0;
surface_dma_cmd.header.id = SVGA_3D_CMD_SURFACE_DMA;
surface_dma_cmd.header.size = sizeof(surface_dma_cmd.body) +
sizeof(surface_dma_cmd.area) +
sizeof(surface_dma_cmd.suffix);
surface_dma_cmd.body.guest.ptr = ptr;
surface_dma_cmd.body.guest.pitch = stdu->content_fb->pitches[0];
surface_dma_cmd.body.host.sid = stdu->display_srf->res.id;
surface_dma_cmd.body.host.face = 0;
surface_dma_cmd.body.host.mipmap = 0;
surface_dma_cmd.body.transfer = SVGA3D_WRITE_HOST_VRAM;
surface_dma_cmd.area.srcx = content_x;
surface_dma_cmd.area.srcy = content_y;
surface_dma_cmd.area.x = display_x;
surface_dma_cmd.area.y = display_y;
surface_dma_cmd.area.d = 1;
surface_dma_cmd.area.w = width;
surface_dma_cmd.area.h = height;
suffix = &surface_dma_cmd.suffix;
suffix->suffixSize = sizeof(*suffix);
suffix->maximumOffset = svga3dsurface_get_image_buffer_size(
desc,
&cur_size,
stdu->content_fb->pitches[0]);
cmd = (void *) &surface_dma_cmd;
} else {
u32 src_id;
content_vfbs = vmw_framebuffer_to_vfbs(stdu->content_fb);
if (content_vfbs->is_dmabuf_proxy) {
ret = vmw_stdu_dma_update(dev_priv, file_priv,
content_vfbs,
content_x, content_y,
width, height);
if (ret != 0) {
DRM_ERROR("Failed to update cached DMA buf\n");
return ret;
}
quirks |= VMW_QUIRK_SRC_SID_OK;
src_id = content_vfbs->surface->res.id;
} else {
struct vmw_framebuffer *content_vfb;
content_vfb = vmw_framebuffer_to_vfb(stdu->content_fb);
src_id = content_vfb->user_handle;
}
fifo_size = sizeof(surface_cpy_cmd);
memset(&surface_cpy_cmd, 0, fifo_size);
surface_cpy_cmd.header.id = SVGA_3D_CMD_SURFACE_COPY;
surface_cpy_cmd.header.size = sizeof(surface_cpy_cmd.body) +
sizeof(surface_cpy_cmd.area);
surface_cpy_cmd.body.src.sid = src_id;
surface_cpy_cmd.body.dest.sid = stdu->display_srf->res.id;
surface_cpy_cmd.area.srcx = content_x;
surface_cpy_cmd.area.srcy = content_y;
surface_cpy_cmd.area.x = display_x;
surface_cpy_cmd.area.y = display_y;
surface_cpy_cmd.area.d = 1;
surface_cpy_cmd.area.w = width;
surface_cpy_cmd.area.h = height;
cmd = (void *) &surface_cpy_cmd;
}
ret = vmw_execbuf_process(file_priv, dev_priv, NULL,
(void *) cmd,
fifo_size, 0, quirks,
NULL, NULL);
return ret;
}
/**
* vmw_stdu_define_st - Defines a Screen Target
*
* @dev_priv: VMW DRM device
* @stdu: display unit to create a Screen Target for
*
* 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 {
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 = stdu->display_srf->base_size.width;
cmd->body.height = stdu->display_srf->base_size.height;
cmd->body.flags = (0 == cmd->body.stid) ? SVGA_STFLAG_PRIMARY : 0;
cmd->body.dpi = 0;
cmd->body.xRoot = stdu->base.crtc.x;
cmd->body.yRoot = stdu->base.crtc.y;
if (!stdu->base.is_implicit) {
cmd->body.xRoot = stdu->base.gui_x;
cmd->body.yRoot = stdu->base.gui_y;
}
vmw_fifo_commit(dev_priv, sizeof(*cmd));
stdu->defined = true;
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,
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_update_st - Updates a Screen Target
*
* @dev_priv: VMW DRM device
* @file_priv: Pointer to DRM file private structure. Set to NULL when
* we want to blank display.
* @stdu: display unit affected
* @update_area: area that needs to be updated
*
* This function needs to be called whenever the content of a screen
* target changes.
* If the display and content buffers are different, then this function does
* a blit first from the content buffer to the display buffer before issuing
* the Screen Target update command.
*
* RETURNS:
* 0 on success, error code on failure
*/
static int vmw_stdu_update_st(struct vmw_private *dev_priv,
struct drm_file *file_priv,
struct vmw_screen_target_display_unit *stdu,
struct drm_clip_rect *update_area)
{
u32 width, height;
u32 display_update_x, display_update_y;
unsigned short display_x1, display_y1, display_x2, display_y2;
int ret;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdUpdateGBScreenTarget body;
} *cmd;
if (!stdu->defined) {
DRM_ERROR("No screen target defined");
return -EINVAL;
}
/* Display coordinates relative to its position in content surface */
display_x1 = stdu->base.crtc.x;
display_y1 = stdu->base.crtc.y;
display_x2 = display_x1 + stdu->display_srf->base_size.width;
display_y2 = display_y1 + stdu->display_srf->base_size.height;
/* Do nothing if the update area is outside of the display surface */
if (update_area->x2 <= display_x1 || update_area->x1 >= display_x2 ||
update_area->y2 <= display_y1 || update_area->y1 >= display_y2)
return 0;
/* The top-left hand corner of the update area in display surface */
display_update_x = max(update_area->x1 - display_x1, 0);
display_update_y = max(update_area->y1 - display_y1, 0);
width = min(update_area->x2, display_x2) -
max(update_area->x1, display_x1);
height = min(update_area->y2, display_y2) -
max(update_area->y1, display_y1);
/*
* If content is on a separate surface, then copy the dirty area to
* the display surface
*/
if (file_priv && stdu->content_fb_type != SAME_AS_DISPLAY) {
ret = vmw_stdu_content_copy(dev_priv, file_priv,
stdu,
max(update_area->x1, display_x1),
max(update_area->y1, display_y1),
width, height,
display_update_x, display_update_y);
if (unlikely(ret != 0)) {
DRM_ERROR("Failed to blit content\n");
return ret;
}
}
/*
* If the display surface is the same as the content surface, then
* it may be backed by a DMA buf. If it is then we need to update
* the device's cached copy of the DMA buf before issuing the screen
* target update.
*/
if (file_priv && stdu->content_fb_type == SAME_AS_DISPLAY) {
struct vmw_framebuffer_surface *vfbs;
vfbs = vmw_framebuffer_to_vfbs(stdu->content_fb);
ret = vmw_stdu_dma_update(dev_priv, file_priv,
vfbs,
max(update_area->x1, display_x1),
max(update_area->y1, display_y1),
width, height);
if (ret != 0) {
DRM_ERROR("Failed to update cached DMA buffer\n");
return ret;
}
}
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;
}
cmd->header.id = SVGA_3D_CMD_UPDATE_GB_SCREENTARGET;
cmd->header.size = sizeof(cmd->body);
cmd->body.stid = stdu->base.unit;
cmd->body.rect.x = display_update_x;
cmd->body.rect.y = display_update_y;
cmd->body.rect.w = width;
cmd->body.rect.h = 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;
return ret;
}
/**
* vmw_stdu_crtc_set_config - Sets a mode
*
* @set: mode parameters
*
* This function is the device-specific portion of the DRM CRTC mode set.
* For the SVGA device, we do this by defining a Screen Target, binding a
* GB Surface to that target, and finally update the screen target.
*
* RETURNS:
* 0 on success, error code otherwise
*/
static int vmw_stdu_crtc_set_config(struct drm_mode_set *set)
{
struct vmw_private *dev_priv;
struct vmw_screen_target_display_unit *stdu;
struct vmw_framebuffer *vfb;
struct vmw_framebuffer_surface *new_vfbs;
struct drm_display_mode *mode;
struct drm_framebuffer *new_fb;
struct drm_crtc *crtc;
struct drm_encoder *encoder;
struct drm_connector *connector;
struct drm_clip_rect update_area = {0};
int ret;
if (!set || !set->crtc)
return -EINVAL;
crtc = set->crtc;
crtc->x = set->x;
crtc->y = set->y;
stdu = vmw_crtc_to_stdu(crtc);
mode = set->mode;
new_fb = set->fb;
dev_priv = vmw_priv(crtc->dev);
if (set->num_connectors > 1) {
DRM_ERROR("Too many connectors\n");
return -EINVAL;
}
if (set->num_connectors == 1 &&
set->connectors[0] != &stdu->base.connector) {
DRM_ERROR("Connectors don't match %p %p\n",
set->connectors[0], &stdu->base.connector);
return -EINVAL;
}
/* Since they always map one to one these are safe */
connector = &stdu->base.connector;
encoder = &stdu->base.encoder;
/*
* After this point the CRTC will be considered off unless a new fb
* is bound
*/
if (stdu->defined) {
/* Unbind current surface by binding an invalid one */
ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
if (unlikely(ret != 0))
return ret;
/* Update Screen Target, display will now be blank */
if (crtc->primary->fb) {
update_area.x2 = crtc->primary->fb->width;
update_area.y2 = crtc->primary->fb->height;
ret = vmw_stdu_update_st(dev_priv, NULL,
stdu,
&update_area);
if (unlikely(ret != 0))
return ret;
}
crtc->primary->fb = NULL;
crtc->enabled = false;
encoder->crtc = NULL;
connector->encoder = NULL;
vmw_stdu_unpin_display(stdu);
stdu->content_fb = NULL;
stdu->content_fb_type = SAME_AS_DISPLAY;
ret = vmw_stdu_destroy_st(dev_priv, stdu);
/* The hardware is hung, give up */
if (unlikely(ret != 0))
return ret;
}
/* Any of these conditions means the caller wants CRTC off */
if (set->num_connectors == 0 || !mode || !new_fb)
return 0;
if (set->x + mode->hdisplay > new_fb->width ||
set->y + mode->vdisplay > new_fb->height) {
DRM_ERROR("Set outside of framebuffer\n");
return -EINVAL;
}
stdu->content_fb = new_fb;
vfb = vmw_framebuffer_to_vfb(stdu->content_fb);
if (vfb->dmabuf)
stdu->content_fb_type = SEPARATE_DMA;
/*
* If the requested mode is different than the width and height
* of the FB or if the content buffer is a DMA buf, then allocate
* a display FB that matches the dimension of the mode
*/
if (mode->hdisplay != new_fb->width ||
mode->vdisplay != new_fb->height ||
stdu->content_fb_type != SAME_AS_DISPLAY) {
struct vmw_surface content_srf;
struct drm_vmw_size display_base_size = {0};
struct vmw_surface *display_srf;
display_base_size.width = mode->hdisplay;
display_base_size.height = mode->vdisplay;
display_base_size.depth = 1;
/*
* If content buffer is a DMA buf, then we have to construct
* surface info
*/
if (stdu->content_fb_type == SEPARATE_DMA) {
switch (new_fb->bits_per_pixel) {
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");
ret = -EINVAL;
goto err_unref_content;
}
content_srf.flags = 0;
content_srf.mip_levels[0] = 1;
content_srf.multisample_count = 0;
} else {
stdu->content_fb_type = SEPARATE_SURFACE;
new_vfbs = vmw_framebuffer_to_vfbs(new_fb);
content_srf = *new_vfbs->surface;
}
ret = vmw_surface_gb_priv_define(crtc->dev,
0, /* because kernel visible only */
content_srf.flags,
content_srf.format,
true, /* a scanout buffer */
content_srf.mip_levels[0],
content_srf.multisample_count,
display_base_size,
&display_srf);
if (unlikely(ret != 0)) {
DRM_ERROR("Cannot allocate a display FB.\n");
goto err_unref_content;
}
stdu->display_srf = display_srf;
} else {
new_vfbs = vmw_framebuffer_to_vfbs(new_fb);
stdu->display_srf = new_vfbs->surface;
}
ret = vmw_stdu_pin_display(stdu);
if (unlikely(ret != 0)) {
stdu->display_srf = NULL;
goto err_unref_content;
}
vmw_fb_off(dev_priv);
vmw_svga_enable(dev_priv);
/*
* Steps to displaying a surface, assume surface is already
* bound:
* 1. define a screen target
* 2. bind a fb to the screen target
* 3. update that screen target (this is done later by
* vmw_kms_stdu_do_surface_dirty_or_present)
*/
ret = vmw_stdu_define_st(dev_priv, stdu);
if (unlikely(ret != 0))
goto err_unpin_display_and_content;
ret = vmw_stdu_bind_st(dev_priv, stdu, &stdu->display_srf->res);
if (unlikely(ret != 0))
goto err_unpin_destroy_st;
connector->encoder = encoder;
encoder->crtc = crtc;
crtc->mode = *mode;
crtc->primary->fb = new_fb;
crtc->enabled = true;
return ret;
err_unpin_destroy_st:
vmw_stdu_destroy_st(dev_priv, stdu);
err_unpin_display_and_content:
vmw_stdu_unpin_display(stdu);
err_unref_content:
stdu->content_fb = NULL;
return ret;
}
/**
* 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 vmw_private *dev_priv = vmw_priv(crtc->dev);
struct vmw_screen_target_display_unit *stdu;
struct drm_file *file_priv;
struct drm_clip_rect update_area = {0};
int ret;
/*
* Temporarily don't support event == NULL. We need the
* @file_priv pointer!
*/
if (event == NULL)
return -EINVAL;
if (crtc == NULL)
return -EINVAL;
dev_priv = vmw_priv(crtc->dev);
stdu = vmw_crtc_to_stdu(crtc);
crtc->primary->fb = new_fb;
stdu->content_fb = new_fb;
if (stdu->display_srf) {
update_area.x2 = stdu->display_srf->base_size.width;
update_area.y2 = stdu->display_srf->base_size.height;
/*
* If the display surface is the same as the content surface
* then remove the reference
*/
if (stdu->content_fb_type == SAME_AS_DISPLAY) {
if (stdu->defined) {
/* Unbind the current surface */
ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
if (unlikely(ret != 0))
goto err_out;
}
vmw_stdu_unpin_display(stdu);
stdu->display_srf = NULL;
}
}
if (!new_fb) {
/* Blanks the display */
(void) vmw_stdu_update_st(dev_priv, NULL, stdu, &update_area);
return 0;
}
if (stdu->content_fb_type == SAME_AS_DISPLAY) {
stdu->display_srf = vmw_framebuffer_to_vfbs(new_fb)->surface;
ret = vmw_stdu_pin_display(stdu);
if (ret) {
stdu->display_srf = NULL;
goto err_out;
}
/* Bind display surface */
ret = vmw_stdu_bind_st(dev_priv, stdu, &stdu->display_srf->res);
if (unlikely(ret != 0))
goto err_unpin_display_and_content;
}
/* Update display surface: after this point everything is bound */
update_area.x2 = stdu->display_srf->base_size.width;
update_area.y2 = stdu->display_srf->base_size.height;
file_priv = event->base.file_priv;
ret = vmw_stdu_update_st(dev_priv, file_priv, stdu, &update_area);
if (unlikely(ret != 0))
return ret;
if (event) {
struct vmw_fence_obj *fence = NULL;
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.tv_sec,
&event->event.tv_usec,
true);
vmw_fence_obj_unreference(&fence);
}
return ret;
err_unpin_display_and_content:
vmw_stdu_unpin_display(stdu);
err_out:
crtc->primary->fb = NULL;
stdu->content_fb = NULL;
return ret;
}
/*
* Screen Target CRTC dispatch table
*/
static struct drm_crtc_funcs vmw_stdu_crtc_funcs = {
.save = vmw_du_crtc_save,
.restore = vmw_du_crtc_restore,
.cursor_set = vmw_du_crtc_cursor_set,
.cursor_move = vmw_du_crtc_cursor_move,
.gamma_set = vmw_du_crtc_gamma_set,
.destroy = vmw_stdu_crtc_destroy,
.set_config = vmw_stdu_crtc_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 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 struct drm_connector_funcs vmw_stdu_connector_funcs = {
.dpms = vmw_du_connector_dpms,
.save = vmw_du_connector_save,
.restore = vmw_du_connector_restore,
.detect = vmw_du_connector_detect,
.fill_modes = vmw_du_connector_fill_modes,
.set_property = vmw_du_connector_set_property,
.destroy = vmw_stdu_connector_destroy,
};
/**
* 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_crtc *crtc;
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;
stdu->base.pref_active = (unit == 0);
stdu->base.pref_width = dev_priv->initial_width;
stdu->base.pref_height = dev_priv->initial_height;
stdu->base.pref_mode = NULL;
stdu->base.is_implicit = true;
drm_connector_init(dev, connector, &vmw_stdu_connector_funcs,
DRM_MODE_CONNECTOR_VIRTUAL);
connector->status = vmw_du_connector_detect(connector, false);
drm_encoder_init(dev, encoder, &vmw_stdu_encoder_funcs,
DRM_MODE_ENCODER_VIRTUAL);
drm_mode_connector_attach_encoder(connector, encoder);
encoder->possible_crtcs = (1 << unit);
encoder->possible_clones = 0;
(void) drm_connector_register(connector);
drm_crtc_init(dev, crtc, &vmw_stdu_crtc_funcs);
drm_mode_crtc_set_gamma_size(crtc, 256);
drm_object_attach_property(&connector->base,
dev->mode_config.dirty_info_property,
1);
return 0;
}
/**
* 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_stdu_unpin_display(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;
ret = drm_mode_create_dirty_info_property(dev);
if (unlikely(ret != 0))
goto err_vblank_cleanup;
for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) {
ret = vmw_stdu_init(dev_priv, i);
if (unlikely(ret != 0)) {
DRM_ERROR("Failed to initialize STDU %d", i);
goto err_vblank_cleanup;
}
}
dev_priv->active_display_unit = vmw_du_screen_target;
DRM_INFO("Screen Target Display device initialized\n");
return 0;
err_vblank_cleanup:
drm_vblank_cleanup(dev);
return ret;
}
/**
* vmw_kms_stdu_close_display - Cleans up after vmw_kms_stdu_init_display
*
* @dev_priv: VMW DRM device
*
* Frees up any resources allocated by vmw_kms_stdu_init_display
*
* RETURNS:
* 0 on success
*/
int vmw_kms_stdu_close_display(struct vmw_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
drm_vblank_cleanup(dev);
return 0;
}
/**
* vmw_kms_stdu_do_surface_dirty - updates a dirty rectange to SVGA device
*
* @dev_priv: VMW DRM device
* @file_priv: Pointer to a drm file private structure
* @framebuffer: FB with the new content to be copied to SVGA device
* @clip_rects: array of dirty rectanges
* @num_of_clip_rects: number of rectanges in @clips
* @increment: increment to the next dirty rect in @clips
*
* This function sends an Update command to the SVGA device. This will notify
* the device that a region needs to be copied to the screen. At this time
* we are not coalescing clip rects into one large clip rect because the SVGA
* device will do it for us.
*
* RETURNS:
* 0 on success, error code otherwise
*/
int vmw_kms_stdu_do_surface_dirty(struct vmw_private *dev_priv,
struct drm_file *file_priv,
struct vmw_framebuffer *framebuffer,
struct drm_clip_rect *clip_rects,
unsigned num_of_clip_rects, int increment)
{
struct vmw_screen_target_display_unit *stdu[VMWGFX_NUM_DISPLAY_UNITS];
struct drm_clip_rect *cur_rect;
struct drm_crtc *crtc;
unsigned num_of_du = 0, cur_du, count = 0;
int ret = 0;
BUG_ON(!clip_rects || !num_of_clip_rects);
/* Figure out all the DU affected by this surface */
list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list,
head) {
if (crtc->primary->fb != &framebuffer->base)
continue;
stdu[num_of_du++] = vmw_crtc_to_stdu(crtc);
}
for (cur_du = 0; cur_du < num_of_du; cur_du++)
for (cur_rect = clip_rects, count = 0;
count < num_of_clip_rects && ret == 0;
cur_rect += increment, count++) {
ret = vmw_stdu_update_st(dev_priv, file_priv,
stdu[cur_du],
cur_rect);
}
return ret;
}
/**
* vmw_kms_stdu_present - present a surface to the display surface
*
* @dev_priv: VMW DRM device
* @file_priv: Pointer to a drm file private structure
* @vfb: Used to pick which STDU(s) is affected
* @user_handle: user handle for the source surface
* @dest_x: top/left corner of the display area to blit to
* @dest_y: top/left corner of the display area to blit to
* @clip_rects: array of dirty rectanges
* @num_of_clip_rects: number of rectanges in @clips
*
* This function copies a surface onto the display surface, and
* updates the screen target. Strech blit is currently not
* supported.
*
* RETURNS:
* 0 on success, error code otherwise
*/
int vmw_kms_stdu_present(struct vmw_private *dev_priv,
struct drm_file *file_priv,
struct vmw_framebuffer *vfb,
uint32_t user_handle,
int32_t dest_x, int32_t dest_y,
struct drm_vmw_rect *clip_rects,
uint32_t num_of_clip_rects)
{
struct vmw_screen_target_display_unit *stdu[VMWGFX_NUM_DISPLAY_UNITS];
struct drm_clip_rect *update_area;
struct drm_crtc *crtc;
size_t fifo_size;
int num_of_du = 0, cur_du, i;
int ret = 0;
struct vmw_clip_rect src_bb;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdSurfaceCopy body;
} *cmd;
SVGA3dCopyBox *blits;
BUG_ON(!clip_rects || !num_of_clip_rects);
list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list, head) {
if (crtc->primary->fb != &vfb->base)
continue;
stdu[num_of_du++] = vmw_crtc_to_stdu(crtc);
}
update_area = kcalloc(num_of_clip_rects, sizeof(*update_area),
GFP_KERNEL);
if (unlikely(update_area == NULL)) {
DRM_ERROR("Temporary clip rect memory alloc failed.\n");
return -ENOMEM;
}
fifo_size = sizeof(*cmd) + sizeof(SVGA3dCopyBox) * num_of_clip_rects;
cmd = kmalloc(fifo_size, GFP_KERNEL);
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed to allocate memory for surface copy.\n");
ret = -ENOMEM;
goto out_free_update_area;
}
memset(cmd, 0, fifo_size);
cmd->header.id = SVGA_3D_CMD_SURFACE_COPY;
blits = (SVGA3dCopyBox *)&cmd[1];
/* Figure out the source bounding box */
src_bb.x1 = clip_rects->x;
src_bb.y1 = clip_rects->y;
src_bb.x2 = clip_rects->x + clip_rects->w;
src_bb.y2 = clip_rects->y + clip_rects->h;
for (i = 1; i < num_of_clip_rects; i++) {
src_bb.x1 = min_t(int, src_bb.x1, clip_rects[i].x);
src_bb.x2 = max_t(int, src_bb.x2,
clip_rects[i].x + (int) clip_rects[i].w);
src_bb.y1 = min_t(int, src_bb.y1, clip_rects[i].y);
src_bb.y2 = max_t(int, src_bb.y2,
clip_rects[i].y + (int) clip_rects[i].h);
}
for (i = 0; i < num_of_clip_rects; i++) {
update_area[i].x1 = clip_rects[i].x - src_bb.x1;
update_area[i].x2 = update_area[i].x1 + clip_rects[i].w;
update_area[i].y1 = clip_rects[i].y - src_bb.y1;
update_area[i].y2 = update_area[i].y1 + clip_rects[i].h;
}
for (cur_du = 0; cur_du < num_of_du; cur_du++) {
struct vmw_clip_rect dest_bb;
int num_of_blits;
crtc = &stdu[cur_du]->base.crtc;
dest_bb.x1 = src_bb.x1 + dest_x - crtc->x;
dest_bb.y1 = src_bb.y1 + dest_y - crtc->y;
dest_bb.x2 = src_bb.x2 + dest_x - crtc->x;
dest_bb.y2 = src_bb.y2 + dest_y - crtc->y;
/* Skip any STDU outside of the destination bounding box */
if (dest_bb.x1 >= crtc->mode.hdisplay ||
dest_bb.y1 >= crtc->mode.vdisplay ||
dest_bb.x2 <= 0 || dest_bb.y2 <= 0)
continue;
/* Normalize to top-left of src bounding box in dest coord */
dest_bb.x2 = crtc->mode.hdisplay - dest_bb.x1;
dest_bb.y2 = crtc->mode.vdisplay - dest_bb.y1;
dest_bb.x1 = 0 - dest_bb.x1;
dest_bb.y1 = 0 - dest_bb.y1;
for (i = 0, num_of_blits = 0; i < num_of_clip_rects; i++) {
int x1 = max_t(int, dest_bb.x1, (int)update_area[i].x1);
int y1 = max_t(int, dest_bb.y1, (int)update_area[i].y1);
int x2 = min_t(int, dest_bb.x2, (int)update_area[i].x2);
int y2 = min_t(int, dest_bb.y2, (int)update_area[i].y2);
if (x1 >= x2)
continue;
if (y1 >= y2)
continue;
blits[num_of_blits].srcx = src_bb.x1 + x1;
blits[num_of_blits].srcy = src_bb.y1 + y1;
blits[num_of_blits].x = -dest_bb.x1 + x1;
blits[num_of_blits].y = -dest_bb.y1 + y1;
blits[num_of_blits].d = 1;
blits[num_of_blits].w = x2 - x1;
blits[num_of_blits].h = y2 - y1;
num_of_blits++;
}
if (num_of_blits == 0)
continue;
/* Calculate new command size */
fifo_size = sizeof(*cmd) + sizeof(SVGA3dCopyBox) * num_of_blits;
cmd->header.size = cpu_to_le32(fifo_size - sizeof(cmd->header));
cmd->body.src.sid = user_handle;
cmd->body.dest.sid = stdu[cur_du]->display_srf->res.id;
ret = vmw_execbuf_process(file_priv, dev_priv, NULL, cmd,
fifo_size, 0, VMW_QUIRK_DST_SID_OK,
NULL, NULL);
if (unlikely(ret != 0))
break;
for (i = 0; i < num_of_blits; i++) {
struct drm_clip_rect blit_area;
/*
* Add crtc offset because vmw_stdu_update_st expects
* desktop coordinates
*/
blit_area.x1 = blits[i].x + crtc->x;
blit_area.x2 = blit_area.x1 + blits[i].w;
blit_area.y1 = blits[i].y + crtc->y;
blit_area.y2 = blit_area.y1 + blits[i].h;
(void) vmw_stdu_update_st(dev_priv, NULL, stdu[cur_du],
&blit_area);
}
}
kfree(cmd);
out_free_update_area:
kfree(update_area);
return ret;
}