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linux/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
Thomas Hellstrom 9da6e26c0a drm/vmwgfx: Fix a layout race condition 
This fixes a layout update race condition. We make sure
the crtc mutex is locked before we dereference crtc->state. Otherwise the
state might change under us.

Since now we're already holding the crtc mutexes when reading the gui
coordinates, protect them with the crtc mutexes rather than with the
requested_layout mutex.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Deepak Rawat <drawat@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
2018-12-05 10:08:53 +01:00

2903 lines
75 KiB
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// SPDX-License-Identifier: GPL-2.0 OR MIT
/**************************************************************************
*
* Copyright 2009-2015 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 "vmwgfx_kms.h"
#include <drm/drm_plane_helper.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_rect.h>
#include <drm/drm_damage_helper.h>
/* Might need a hrtimer here? */
#define VMWGFX_PRESENT_RATE ((HZ / 60 > 0) ? HZ / 60 : 1)
void vmw_du_cleanup(struct vmw_display_unit *du)
{
drm_plane_cleanup(&du->primary);
drm_plane_cleanup(&du->cursor);
drm_connector_unregister(&du->connector);
drm_crtc_cleanup(&du->crtc);
drm_encoder_cleanup(&du->encoder);
drm_connector_cleanup(&du->connector);
}
/*
* Display Unit Cursor functions
*/
static int vmw_cursor_update_image(struct vmw_private *dev_priv,
u32 *image, u32 width, u32 height,
u32 hotspotX, u32 hotspotY)
{
struct {
u32 cmd;
SVGAFifoCmdDefineAlphaCursor cursor;
} *cmd;
u32 image_size = width * height * 4;
u32 cmd_size = sizeof(*cmd) + image_size;
if (!image)
return -EINVAL;
cmd = vmw_fifo_reserve(dev_priv, cmd_size);
if (unlikely(cmd == NULL)) {
DRM_ERROR("Fifo reserve failed.\n");
return -ENOMEM;
}
memset(cmd, 0, sizeof(*cmd));
memcpy(&cmd[1], image, image_size);
cmd->cmd = SVGA_CMD_DEFINE_ALPHA_CURSOR;
cmd->cursor.id = 0;
cmd->cursor.width = width;
cmd->cursor.height = height;
cmd->cursor.hotspotX = hotspotX;
cmd->cursor.hotspotY = hotspotY;
vmw_fifo_commit_flush(dev_priv, cmd_size);
return 0;
}
static int vmw_cursor_update_bo(struct vmw_private *dev_priv,
struct vmw_buffer_object *bo,
u32 width, u32 height,
u32 hotspotX, u32 hotspotY)
{
struct ttm_bo_kmap_obj map;
unsigned long kmap_offset;
unsigned long kmap_num;
void *virtual;
bool dummy;
int ret;
kmap_offset = 0;
kmap_num = (width*height*4 + PAGE_SIZE - 1) >> PAGE_SHIFT;
ret = ttm_bo_reserve(&bo->base, true, false, NULL);
if (unlikely(ret != 0)) {
DRM_ERROR("reserve failed\n");
return -EINVAL;
}
ret = ttm_bo_kmap(&bo->base, kmap_offset, kmap_num, &map);
if (unlikely(ret != 0))
goto err_unreserve;
virtual = ttm_kmap_obj_virtual(&map, &dummy);
ret = vmw_cursor_update_image(dev_priv, virtual, width, height,
hotspotX, hotspotY);
ttm_bo_kunmap(&map);
err_unreserve:
ttm_bo_unreserve(&bo->base);
return ret;
}
static void vmw_cursor_update_position(struct vmw_private *dev_priv,
bool show, int x, int y)
{
u32 *fifo_mem = dev_priv->mmio_virt;
uint32_t count;
spin_lock(&dev_priv->cursor_lock);
vmw_mmio_write(show ? 1 : 0, fifo_mem + SVGA_FIFO_CURSOR_ON);
vmw_mmio_write(x, fifo_mem + SVGA_FIFO_CURSOR_X);
vmw_mmio_write(y, fifo_mem + SVGA_FIFO_CURSOR_Y);
count = vmw_mmio_read(fifo_mem + SVGA_FIFO_CURSOR_COUNT);
vmw_mmio_write(++count, fifo_mem + SVGA_FIFO_CURSOR_COUNT);
spin_unlock(&dev_priv->cursor_lock);
}
void vmw_kms_cursor_snoop(struct vmw_surface *srf,
struct ttm_object_file *tfile,
struct ttm_buffer_object *bo,
SVGA3dCmdHeader *header)
{
struct ttm_bo_kmap_obj map;
unsigned long kmap_offset;
unsigned long kmap_num;
SVGA3dCopyBox *box;
unsigned box_count;
void *virtual;
bool dummy;
struct vmw_dma_cmd {
SVGA3dCmdHeader header;
SVGA3dCmdSurfaceDMA dma;
} *cmd;
int i, ret;
cmd = container_of(header, struct vmw_dma_cmd, header);
/* No snooper installed */
if (!srf->snooper.image)
return;
if (cmd->dma.host.face != 0 || cmd->dma.host.mipmap != 0) {
DRM_ERROR("face and mipmap for cursors should never != 0\n");
return;
}
if (cmd->header.size < 64) {
DRM_ERROR("at least one full copy box must be given\n");
return;
}
box = (SVGA3dCopyBox *)&cmd[1];
box_count = (cmd->header.size - sizeof(SVGA3dCmdSurfaceDMA)) /
sizeof(SVGA3dCopyBox);
if (cmd->dma.guest.ptr.offset % PAGE_SIZE ||
box->x != 0 || box->y != 0 || box->z != 0 ||
box->srcx != 0 || box->srcy != 0 || box->srcz != 0 ||
box->d != 1 || box_count != 1) {
/* TODO handle none page aligned offsets */
/* TODO handle more dst & src != 0 */
/* TODO handle more then one copy */
DRM_ERROR("Cant snoop dma request for cursor!\n");
DRM_ERROR("(%u, %u, %u) (%u, %u, %u) (%ux%ux%u) %u %u\n",
box->srcx, box->srcy, box->srcz,
box->x, box->y, box->z,
box->w, box->h, box->d, box_count,
cmd->dma.guest.ptr.offset);
return;
}
kmap_offset = cmd->dma.guest.ptr.offset >> PAGE_SHIFT;
kmap_num = (64*64*4) >> PAGE_SHIFT;
ret = ttm_bo_reserve(bo, true, false, NULL);
if (unlikely(ret != 0)) {
DRM_ERROR("reserve failed\n");
return;
}
ret = ttm_bo_kmap(bo, kmap_offset, kmap_num, &map);
if (unlikely(ret != 0))
goto err_unreserve;
virtual = ttm_kmap_obj_virtual(&map, &dummy);
if (box->w == 64 && cmd->dma.guest.pitch == 64*4) {
memcpy(srf->snooper.image, virtual, 64*64*4);
} else {
/* Image is unsigned pointer. */
for (i = 0; i < box->h; i++)
memcpy(srf->snooper.image + i * 64,
virtual + i * cmd->dma.guest.pitch,
box->w * 4);
}
srf->snooper.age++;
ttm_bo_kunmap(&map);
err_unreserve:
ttm_bo_unreserve(bo);
}
/**
* vmw_kms_legacy_hotspot_clear - Clear legacy hotspots
*
* @dev_priv: Pointer to the device private struct.
*
* Clears all legacy hotspots.
*/
void vmw_kms_legacy_hotspot_clear(struct vmw_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
struct vmw_display_unit *du;
struct drm_crtc *crtc;
drm_modeset_lock_all(dev);
drm_for_each_crtc(crtc, dev) {
du = vmw_crtc_to_du(crtc);
du->hotspot_x = 0;
du->hotspot_y = 0;
}
drm_modeset_unlock_all(dev);
}
void vmw_kms_cursor_post_execbuf(struct vmw_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
struct vmw_display_unit *du;
struct drm_crtc *crtc;
mutex_lock(&dev->mode_config.mutex);
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
du = vmw_crtc_to_du(crtc);
if (!du->cursor_surface ||
du->cursor_age == du->cursor_surface->snooper.age)
continue;
du->cursor_age = du->cursor_surface->snooper.age;
vmw_cursor_update_image(dev_priv,
du->cursor_surface->snooper.image,
64, 64,
du->hotspot_x + du->core_hotspot_x,
du->hotspot_y + du->core_hotspot_y);
}
mutex_unlock(&dev->mode_config.mutex);
}
void vmw_du_cursor_plane_destroy(struct drm_plane *plane)
{
vmw_cursor_update_position(plane->dev->dev_private, false, 0, 0);
drm_plane_cleanup(plane);
}
void vmw_du_primary_plane_destroy(struct drm_plane *plane)
{
drm_plane_cleanup(plane);
/* Planes are static in our case so we don't free it */
}
/**
* vmw_du_vps_unpin_surf - unpins resource associated with a framebuffer surface
*
* @vps: plane state associated with the display surface
* @unreference: true if we also want to unreference the display.
*/
void vmw_du_plane_unpin_surf(struct vmw_plane_state *vps,
bool unreference)
{
if (vps->surf) {
if (vps->pinned) {
vmw_resource_unpin(&vps->surf->res);
vps->pinned--;
}
if (unreference) {
if (vps->pinned)
DRM_ERROR("Surface still pinned\n");
vmw_surface_unreference(&vps->surf);
}
}
}
/**
* vmw_du_plane_cleanup_fb - Unpins the cursor
*
* @plane: display plane
* @old_state: Contains the FB to clean up
*
* Unpins the framebuffer surface
*
* Returns 0 on success
*/
void
vmw_du_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);
vmw_du_plane_unpin_surf(vps, false);
}
/**
* vmw_du_cursor_plane_prepare_fb - Readies the cursor by referencing it
*
* @plane: display plane
* @new_state: info on the new plane state, including the FB
*
* Returns 0 on success
*/
int
vmw_du_cursor_plane_prepare_fb(struct drm_plane *plane,
struct drm_plane_state *new_state)
{
struct drm_framebuffer *fb = new_state->fb;
struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
if (vps->surf)
vmw_surface_unreference(&vps->surf);
if (vps->bo)
vmw_bo_unreference(&vps->bo);
if (fb) {
if (vmw_framebuffer_to_vfb(fb)->bo) {
vps->bo = vmw_framebuffer_to_vfbd(fb)->buffer;
vmw_bo_reference(vps->bo);
} else {
vps->surf = vmw_framebuffer_to_vfbs(fb)->surface;
vmw_surface_reference(vps->surf);
}
}
return 0;
}
void
vmw_du_cursor_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc;
struct vmw_private *dev_priv = vmw_priv(crtc->dev);
struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
struct vmw_plane_state *vps = vmw_plane_state_to_vps(plane->state);
s32 hotspot_x, hotspot_y;
int ret = 0;
hotspot_x = du->hotspot_x;
hotspot_y = du->hotspot_y;
if (plane->state->fb) {
hotspot_x += plane->state->fb->hot_x;
hotspot_y += plane->state->fb->hot_y;
}
du->cursor_surface = vps->surf;
du->cursor_bo = vps->bo;
if (vps->surf) {
du->cursor_age = du->cursor_surface->snooper.age;
ret = vmw_cursor_update_image(dev_priv,
vps->surf->snooper.image,
64, 64, hotspot_x,
hotspot_y);
} else if (vps->bo) {
ret = vmw_cursor_update_bo(dev_priv, vps->bo,
plane->state->crtc_w,
plane->state->crtc_h,
hotspot_x, hotspot_y);
} else {
vmw_cursor_update_position(dev_priv, false, 0, 0);
return;
}
if (!ret) {
du->cursor_x = plane->state->crtc_x + du->set_gui_x;
du->cursor_y = plane->state->crtc_y + du->set_gui_y;
vmw_cursor_update_position(dev_priv, true,
du->cursor_x + hotspot_x,
du->cursor_y + hotspot_y);
du->core_hotspot_x = hotspot_x - du->hotspot_x;
du->core_hotspot_y = hotspot_y - du->hotspot_y;
} else {
DRM_ERROR("Failed to update cursor image\n");
}
}
/**
* vmw_du_primary_plane_atomic_check - check if the new state is okay
*
* @plane: display plane
* @state: info on the new plane state, including the FB
*
* Check if the new state is settable given the current state. Other
* than what the atomic helper checks, we care about crtc fitting
* the FB and maintaining one active framebuffer.
*
* Returns 0 on success
*/
int vmw_du_primary_plane_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct drm_crtc_state *crtc_state = NULL;
struct drm_framebuffer *new_fb = state->fb;
int ret;
if (state->crtc)
crtc_state = drm_atomic_get_new_crtc_state(state->state, state->crtc);
ret = drm_atomic_helper_check_plane_state(state, crtc_state,
DRM_PLANE_HELPER_NO_SCALING,
DRM_PLANE_HELPER_NO_SCALING,
false, true);
if (!ret && new_fb) {
struct drm_crtc *crtc = state->crtc;
struct vmw_connector_state *vcs;
struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
vcs = vmw_connector_state_to_vcs(du->connector.state);
}
return ret;
}
/**
* vmw_du_cursor_plane_atomic_check - check if the new state is okay
*
* @plane: cursor plane
* @state: info on the new plane state
*
* This is a chance to fail if the new cursor state does not fit
* our requirements.
*
* Returns 0 on success
*/
int vmw_du_cursor_plane_atomic_check(struct drm_plane *plane,
struct drm_plane_state *new_state)
{
int ret = 0;
struct drm_crtc_state *crtc_state = NULL;
struct vmw_surface *surface = NULL;
struct drm_framebuffer *fb = new_state->fb;
if (new_state->crtc)
crtc_state = drm_atomic_get_new_crtc_state(new_state->state,
new_state->crtc);
ret = drm_atomic_helper_check_plane_state(new_state, crtc_state,
DRM_PLANE_HELPER_NO_SCALING,
DRM_PLANE_HELPER_NO_SCALING,
true, true);
if (ret)
return ret;
/* Turning off */
if (!fb)
return 0;
/* A lot of the code assumes this */
if (new_state->crtc_w != 64 || new_state->crtc_h != 64) {
DRM_ERROR("Invalid cursor dimensions (%d, %d)\n",
new_state->crtc_w, new_state->crtc_h);
ret = -EINVAL;
}
if (!vmw_framebuffer_to_vfb(fb)->bo)
surface = vmw_framebuffer_to_vfbs(fb)->surface;
if (surface && !surface->snooper.image) {
DRM_ERROR("surface not suitable for cursor\n");
ret = -EINVAL;
}
return ret;
}
int vmw_du_crtc_atomic_check(struct drm_crtc *crtc,
struct drm_crtc_state *new_state)
{
struct vmw_display_unit *du = vmw_crtc_to_du(new_state->crtc);
int connector_mask = drm_connector_mask(&du->connector);
bool has_primary = new_state->plane_mask &
drm_plane_mask(crtc->primary);
/* We always want to have an active plane with an active CRTC */
if (has_primary != new_state->enable)
return -EINVAL;
if (new_state->connector_mask != connector_mask &&
new_state->connector_mask != 0) {
DRM_ERROR("Invalid connectors configuration\n");
return -EINVAL;
}
/*
* Our virtual device does not have a dot clock, so use the logical
* clock value as the dot clock.
*/
if (new_state->mode.crtc_clock == 0)
new_state->adjusted_mode.crtc_clock = new_state->mode.clock;
return 0;
}
void vmw_du_crtc_atomic_begin(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state)
{
}
void vmw_du_crtc_atomic_flush(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state)
{
struct drm_pending_vblank_event *event = crtc->state->event;
if (event) {
crtc->state->event = NULL;
spin_lock_irq(&crtc->dev->event_lock);
drm_crtc_send_vblank_event(crtc, event);
spin_unlock_irq(&crtc->dev->event_lock);
}
}
/**
* vmw_du_crtc_duplicate_state - duplicate crtc state
* @crtc: DRM crtc
*
* Allocates and returns a copy of the crtc state (both common and
* vmw-specific) for the specified crtc.
*
* Returns: The newly allocated crtc state, or NULL on failure.
*/
struct drm_crtc_state *
vmw_du_crtc_duplicate_state(struct drm_crtc *crtc)
{
struct drm_crtc_state *state;
struct vmw_crtc_state *vcs;
if (WARN_ON(!crtc->state))
return NULL;
vcs = kmemdup(crtc->state, sizeof(*vcs), GFP_KERNEL);
if (!vcs)
return NULL;
state = &vcs->base;
__drm_atomic_helper_crtc_duplicate_state(crtc, state);
return state;
}
/**
* vmw_du_crtc_reset - creates a blank vmw crtc state
* @crtc: DRM crtc
*
* Resets the atomic state for @crtc by freeing the state pointer (which
* might be NULL, e.g. at driver load time) and allocating a new empty state
* object.
*/
void vmw_du_crtc_reset(struct drm_crtc *crtc)
{
struct vmw_crtc_state *vcs;
if (crtc->state) {
__drm_atomic_helper_crtc_destroy_state(crtc->state);
kfree(vmw_crtc_state_to_vcs(crtc->state));
}
vcs = kzalloc(sizeof(*vcs), GFP_KERNEL);
if (!vcs) {
DRM_ERROR("Cannot allocate vmw_crtc_state\n");
return;
}
crtc->state = &vcs->base;
crtc->state->crtc = crtc;
}
/**
* vmw_du_crtc_destroy_state - destroy crtc state
* @crtc: DRM crtc
* @state: state object to destroy
*
* Destroys the crtc state (both common and vmw-specific) for the
* specified plane.
*/
void
vmw_du_crtc_destroy_state(struct drm_crtc *crtc,
struct drm_crtc_state *state)
{
drm_atomic_helper_crtc_destroy_state(crtc, state);
}
/**
* vmw_du_plane_duplicate_state - duplicate plane state
* @plane: drm plane
*
* Allocates and returns a copy of the plane state (both common and
* vmw-specific) for the specified plane.
*
* Returns: The newly allocated plane state, or NULL on failure.
*/
struct drm_plane_state *
vmw_du_plane_duplicate_state(struct drm_plane *plane)
{
struct drm_plane_state *state;
struct vmw_plane_state *vps;
vps = kmemdup(plane->state, sizeof(*vps), GFP_KERNEL);
if (!vps)
return NULL;
vps->pinned = 0;
vps->cpp = 0;
/* Each ref counted resource needs to be acquired again */
if (vps->surf)
(void) vmw_surface_reference(vps->surf);
if (vps->bo)
(void) vmw_bo_reference(vps->bo);
state = &vps->base;
__drm_atomic_helper_plane_duplicate_state(plane, state);
return state;
}
/**
* vmw_du_plane_reset - creates a blank vmw plane state
* @plane: drm plane
*
* Resets the atomic state for @plane by freeing the state pointer (which might
* be NULL, e.g. at driver load time) and allocating a new empty state object.
*/
void vmw_du_plane_reset(struct drm_plane *plane)
{
struct vmw_plane_state *vps;
if (plane->state)
vmw_du_plane_destroy_state(plane, plane->state);
vps = kzalloc(sizeof(*vps), GFP_KERNEL);
if (!vps) {
DRM_ERROR("Cannot allocate vmw_plane_state\n");
return;
}
__drm_atomic_helper_plane_reset(plane, &vps->base);
}
/**
* vmw_du_plane_destroy_state - destroy plane state
* @plane: DRM plane
* @state: state object to destroy
*
* Destroys the plane state (both common and vmw-specific) for the
* specified plane.
*/
void
vmw_du_plane_destroy_state(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct vmw_plane_state *vps = vmw_plane_state_to_vps(state);
/* Should have been freed by cleanup_fb */
if (vps->surf)
vmw_surface_unreference(&vps->surf);
if (vps->bo)
vmw_bo_unreference(&vps->bo);
drm_atomic_helper_plane_destroy_state(plane, state);
}
/**
* vmw_du_connector_duplicate_state - duplicate connector state
* @connector: DRM connector
*
* Allocates and returns a copy of the connector state (both common and
* vmw-specific) for the specified connector.
*
* Returns: The newly allocated connector state, or NULL on failure.
*/
struct drm_connector_state *
vmw_du_connector_duplicate_state(struct drm_connector *connector)
{
struct drm_connector_state *state;
struct vmw_connector_state *vcs;
if (WARN_ON(!connector->state))
return NULL;
vcs = kmemdup(connector->state, sizeof(*vcs), GFP_KERNEL);
if (!vcs)
return NULL;
state = &vcs->base;
__drm_atomic_helper_connector_duplicate_state(connector, state);
return state;
}
/**
* vmw_du_connector_reset - creates a blank vmw connector state
* @connector: DRM connector
*
* Resets the atomic state for @connector by freeing the state pointer (which
* might be NULL, e.g. at driver load time) and allocating a new empty state
* object.
*/
void vmw_du_connector_reset(struct drm_connector *connector)
{
struct vmw_connector_state *vcs;
if (connector->state) {
__drm_atomic_helper_connector_destroy_state(connector->state);
kfree(vmw_connector_state_to_vcs(connector->state));
}
vcs = kzalloc(sizeof(*vcs), GFP_KERNEL);
if (!vcs) {
DRM_ERROR("Cannot allocate vmw_connector_state\n");
return;
}
__drm_atomic_helper_connector_reset(connector, &vcs->base);
}
/**
* vmw_du_connector_destroy_state - destroy connector state
* @connector: DRM connector
* @state: state object to destroy
*
* Destroys the connector state (both common and vmw-specific) for the
* specified plane.
*/
void
vmw_du_connector_destroy_state(struct drm_connector *connector,
struct drm_connector_state *state)
{
drm_atomic_helper_connector_destroy_state(connector, state);
}
/*
* Generic framebuffer code
*/
/*
* Surface framebuffer code
*/
static void vmw_framebuffer_surface_destroy(struct drm_framebuffer *framebuffer)
{
struct vmw_framebuffer_surface *vfbs =
vmw_framebuffer_to_vfbs(framebuffer);
drm_framebuffer_cleanup(framebuffer);
vmw_surface_unreference(&vfbs->surface);
if (vfbs->base.user_obj)
ttm_base_object_unref(&vfbs->base.user_obj);
kfree(vfbs);
}
/**
* vmw_kms_readback - Perform a readback from the screen 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.
*
* Returns 0 on success, negative error code on failure. -ERESTARTSYS if
* interrupted.
*/
int vmw_kms_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)
{
switch (dev_priv->active_display_unit) {
case vmw_du_screen_object:
return vmw_kms_sou_readback(dev_priv, file_priv, vfb,
user_fence_rep, vclips, num_clips,
NULL);
case vmw_du_screen_target:
return vmw_kms_stdu_dma(dev_priv, file_priv, vfb,
user_fence_rep, NULL, vclips, num_clips,
1, false, true, NULL);
default:
WARN_ONCE(true,
"Readback called with invalid display system.\n");
}
return -ENOSYS;
}
static const struct drm_framebuffer_funcs vmw_framebuffer_surface_funcs = {
.destroy = vmw_framebuffer_surface_destroy,
.dirty = drm_atomic_helper_dirtyfb,
};
static int vmw_kms_new_framebuffer_surface(struct vmw_private *dev_priv,
struct vmw_surface *surface,
struct vmw_framebuffer **out,
const struct drm_mode_fb_cmd2
*mode_cmd,
bool is_bo_proxy)
{
struct drm_device *dev = dev_priv->dev;
struct vmw_framebuffer_surface *vfbs;
enum SVGA3dSurfaceFormat format;
int ret;
struct drm_format_name_buf format_name;
/* 3D is only supported on HWv8 and newer hosts */
if (dev_priv->active_display_unit == vmw_du_legacy)
return -ENOSYS;
/*
* Sanity checks.
*/
/* Surface must be marked as a scanout. */
if (unlikely(!surface->scanout))
return -EINVAL;
if (unlikely(surface->mip_levels[0] != 1 ||
surface->num_sizes != 1 ||
surface->base_size.width < mode_cmd->width ||
surface->base_size.height < mode_cmd->height ||
surface->base_size.depth != 1)) {
DRM_ERROR("Incompatible surface dimensions "
"for requested mode.\n");
return -EINVAL;
}
switch (mode_cmd->pixel_format) {
case DRM_FORMAT_ARGB8888:
format = SVGA3D_A8R8G8B8;
break;
case DRM_FORMAT_XRGB8888:
format = SVGA3D_X8R8G8B8;
break;
case DRM_FORMAT_RGB565:
format = SVGA3D_R5G6B5;
break;
case DRM_FORMAT_XRGB1555:
format = SVGA3D_A1R5G5B5;
break;
default:
DRM_ERROR("Invalid pixel format: %s\n",
drm_get_format_name(mode_cmd->pixel_format, &format_name));
return -EINVAL;
}
/*
* For DX, surface format validation is done when surface->scanout
* is set.
*/
if (!dev_priv->has_dx && format != surface->format) {
DRM_ERROR("Invalid surface format for requested mode.\n");
return -EINVAL;
}
vfbs = kzalloc(sizeof(*vfbs), GFP_KERNEL);
if (!vfbs) {
ret = -ENOMEM;
goto out_err1;
}
drm_helper_mode_fill_fb_struct(dev, &vfbs->base.base, mode_cmd);
vfbs->surface = vmw_surface_reference(surface);
vfbs->base.user_handle = mode_cmd->handles[0];
vfbs->is_bo_proxy = is_bo_proxy;
*out = &vfbs->base;
ret = drm_framebuffer_init(dev, &vfbs->base.base,
&vmw_framebuffer_surface_funcs);
if (ret)
goto out_err2;
return 0;
out_err2:
vmw_surface_unreference(&surface);
kfree(vfbs);
out_err1:
return ret;
}
/*
* Buffer-object framebuffer code
*/
static void vmw_framebuffer_bo_destroy(struct drm_framebuffer *framebuffer)
{
struct vmw_framebuffer_bo *vfbd =
vmw_framebuffer_to_vfbd(framebuffer);
drm_framebuffer_cleanup(framebuffer);
vmw_bo_unreference(&vfbd->buffer);
if (vfbd->base.user_obj)
ttm_base_object_unref(&vfbd->base.user_obj);
kfree(vfbd);
}
static int vmw_framebuffer_bo_dirty(struct drm_framebuffer *framebuffer,
struct drm_file *file_priv,
unsigned int flags, unsigned int color,
struct drm_clip_rect *clips,
unsigned int num_clips)
{
struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
struct vmw_framebuffer_bo *vfbd =
vmw_framebuffer_to_vfbd(framebuffer);
struct drm_clip_rect norect;
int ret, increment = 1;
drm_modeset_lock_all(dev_priv->dev);
ret = ttm_read_lock(&dev_priv->reservation_sem, true);
if (unlikely(ret != 0)) {
drm_modeset_unlock_all(dev_priv->dev);
return ret;
}
if (!num_clips) {
num_clips = 1;
clips = &norect;
norect.x1 = norect.y1 = 0;
norect.x2 = framebuffer->width;
norect.y2 = framebuffer->height;
} else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
num_clips /= 2;
increment = 2;
}
switch (dev_priv->active_display_unit) {
case vmw_du_legacy:
ret = vmw_kms_ldu_do_bo_dirty(dev_priv, &vfbd->base, 0, 0,
clips, num_clips, increment);
break;
default:
ret = -EINVAL;
WARN_ONCE(true, "Dirty called with invalid display system.\n");
break;
}
vmw_fifo_flush(dev_priv, false);
ttm_read_unlock(&dev_priv->reservation_sem);
drm_modeset_unlock_all(dev_priv->dev);
return ret;
}
static int vmw_framebuffer_bo_dirty_ext(struct drm_framebuffer *framebuffer,
struct drm_file *file_priv,
unsigned int flags, unsigned int color,
struct drm_clip_rect *clips,
unsigned int num_clips)
{
struct vmw_private *dev_priv = vmw_priv(framebuffer->dev);
if (dev_priv->active_display_unit == vmw_du_legacy)
return vmw_framebuffer_bo_dirty(framebuffer, file_priv, flags,
color, clips, num_clips);
return drm_atomic_helper_dirtyfb(framebuffer, file_priv, flags, color,
clips, num_clips);
}
static const struct drm_framebuffer_funcs vmw_framebuffer_bo_funcs = {
.destroy = vmw_framebuffer_bo_destroy,
.dirty = vmw_framebuffer_bo_dirty_ext,
};
/**
* Pin the bofer in a location suitable for access by the
* display system.
*/
static int vmw_framebuffer_pin(struct vmw_framebuffer *vfb)
{
struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
struct vmw_buffer_object *buf;
struct ttm_placement *placement;
int ret;
buf = vfb->bo ? vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
if (!buf)
return 0;
switch (dev_priv->active_display_unit) {
case vmw_du_legacy:
vmw_overlay_pause_all(dev_priv);
ret = vmw_bo_pin_in_start_of_vram(dev_priv, buf, false);
vmw_overlay_resume_all(dev_priv);
break;
case vmw_du_screen_object:
case vmw_du_screen_target:
if (vfb->bo) {
if (dev_priv->capabilities & SVGA_CAP_3D) {
/*
* Use surface DMA to get content to
* sreen target surface.
*/
placement = &vmw_vram_gmr_placement;
} else {
/* Use CPU blit. */
placement = &vmw_sys_placement;
}
} else {
/* Use surface / image update */
placement = &vmw_mob_placement;
}
return vmw_bo_pin_in_placement(dev_priv, buf, placement, false);
default:
return -EINVAL;
}
return ret;
}
static int vmw_framebuffer_unpin(struct vmw_framebuffer *vfb)
{
struct vmw_private *dev_priv = vmw_priv(vfb->base.dev);
struct vmw_buffer_object *buf;
buf = vfb->bo ? vmw_framebuffer_to_vfbd(&vfb->base)->buffer :
vmw_framebuffer_to_vfbs(&vfb->base)->surface->res.backup;
if (WARN_ON(!buf))
return 0;
return vmw_bo_unpin(dev_priv, buf, false);
}
/**
* vmw_create_bo_proxy - create a proxy surface for the buffer object
*
* @dev: DRM device
* @mode_cmd: parameters for the new surface
* @bo_mob: MOB backing the buffer object
* @srf_out: newly created surface
*
* When the content FB is a buffer object, we create a surface as a proxy to the
* same buffer. This way we can do a surface copy rather than a surface DMA.
* This is a more efficient approach
*
* RETURNS:
* 0 on success, error code otherwise
*/
static int vmw_create_bo_proxy(struct drm_device *dev,
const struct drm_mode_fb_cmd2 *mode_cmd,
struct vmw_buffer_object *bo_mob,
struct vmw_surface **srf_out)
{
uint32_t format;
struct drm_vmw_size content_base_size = {0};
struct vmw_resource *res;
unsigned int bytes_pp;
struct drm_format_name_buf format_name;
int ret;
switch (mode_cmd->pixel_format) {
case DRM_FORMAT_ARGB8888:
case DRM_FORMAT_XRGB8888:
format = SVGA3D_X8R8G8B8;
bytes_pp = 4;
break;
case DRM_FORMAT_RGB565:
case DRM_FORMAT_XRGB1555:
format = SVGA3D_R5G6B5;
bytes_pp = 2;
break;
case 8:
format = SVGA3D_P8;
bytes_pp = 1;
break;
default:
DRM_ERROR("Invalid framebuffer format %s\n",
drm_get_format_name(mode_cmd->pixel_format, &format_name));
return -EINVAL;
}
content_base_size.width = mode_cmd->pitches[0] / bytes_pp;
content_base_size.height = mode_cmd->height;
content_base_size.depth = 1;
ret = vmw_surface_gb_priv_define(dev,
0, /* kernel visible only */
0, /* flags */
format,
true, /* can be a scanout buffer */
1, /* num of mip levels */
0,
0,
content_base_size,
SVGA3D_MS_PATTERN_NONE,
SVGA3D_MS_QUALITY_NONE,
srf_out);
if (ret) {
DRM_ERROR("Failed to allocate proxy content buffer\n");
return ret;
}
res = &(*srf_out)->res;
/* Reserve and switch the backing mob. */
mutex_lock(&res->dev_priv->cmdbuf_mutex);
(void) vmw_resource_reserve(res, false, true);
vmw_bo_unreference(&res->backup);
res->backup = vmw_bo_reference(bo_mob);
res->backup_offset = 0;
vmw_resource_unreserve(res, false, NULL, 0);
mutex_unlock(&res->dev_priv->cmdbuf_mutex);
return 0;
}
static int vmw_kms_new_framebuffer_bo(struct vmw_private *dev_priv,
struct vmw_buffer_object *bo,
struct vmw_framebuffer **out,
const struct drm_mode_fb_cmd2
*mode_cmd)
{
struct drm_device *dev = dev_priv->dev;
struct vmw_framebuffer_bo *vfbd;
unsigned int requested_size;
struct drm_format_name_buf format_name;
int ret;
requested_size = mode_cmd->height * mode_cmd->pitches[0];
if (unlikely(requested_size > bo->base.num_pages * PAGE_SIZE)) {
DRM_ERROR("Screen buffer object size is too small "
"for requested mode.\n");
return -EINVAL;
}
/* Limited framebuffer color depth support for screen objects */
if (dev_priv->active_display_unit == vmw_du_screen_object) {
switch (mode_cmd->pixel_format) {
case DRM_FORMAT_XRGB8888:
case DRM_FORMAT_ARGB8888:
break;
case DRM_FORMAT_XRGB1555:
case DRM_FORMAT_RGB565:
break;
default:
DRM_ERROR("Invalid pixel format: %s\n",
drm_get_format_name(mode_cmd->pixel_format, &format_name));
return -EINVAL;
}
}
vfbd = kzalloc(sizeof(*vfbd), GFP_KERNEL);
if (!vfbd) {
ret = -ENOMEM;
goto out_err1;
}
drm_helper_mode_fill_fb_struct(dev, &vfbd->base.base, mode_cmd);
vfbd->base.bo = true;
vfbd->buffer = vmw_bo_reference(bo);
vfbd->base.user_handle = mode_cmd->handles[0];
*out = &vfbd->base;
ret = drm_framebuffer_init(dev, &vfbd->base.base,
&vmw_framebuffer_bo_funcs);
if (ret)
goto out_err2;
return 0;
out_err2:
vmw_bo_unreference(&bo);
kfree(vfbd);
out_err1:
return ret;
}
/**
* vmw_kms_srf_ok - check if a surface can be created
*
* @width: requested width
* @height: requested height
*
* Surfaces need to be less than texture size
*/
static bool
vmw_kms_srf_ok(struct vmw_private *dev_priv, uint32_t width, uint32_t height)
{
if (width > dev_priv->texture_max_width ||
height > dev_priv->texture_max_height)
return false;
return true;
}
/**
* vmw_kms_new_framebuffer - Create a new framebuffer.
*
* @dev_priv: Pointer to device private struct.
* @bo: Pointer to buffer object to wrap the kms framebuffer around.
* Either @bo or @surface must be NULL.
* @surface: Pointer to a surface to wrap the kms framebuffer around.
* Either @bo or @surface must be NULL.
* @only_2d: No presents will occur to this buffer object based framebuffer.
* This helps the code to do some important optimizations.
* @mode_cmd: Frame-buffer metadata.
*/
struct vmw_framebuffer *
vmw_kms_new_framebuffer(struct vmw_private *dev_priv,
struct vmw_buffer_object *bo,
struct vmw_surface *surface,
bool only_2d,
const struct drm_mode_fb_cmd2 *mode_cmd)
{
struct vmw_framebuffer *vfb = NULL;
bool is_bo_proxy = false;
int ret;
/*
* We cannot use the SurfaceDMA command in an non-accelerated VM,
* therefore, wrap the buffer object in a surface so we can use the
* SurfaceCopy command.
*/
if (vmw_kms_srf_ok(dev_priv, mode_cmd->width, mode_cmd->height) &&
bo && only_2d &&
mode_cmd->width > 64 && /* Don't create a proxy for cursor */
dev_priv->active_display_unit == vmw_du_screen_target) {
ret = vmw_create_bo_proxy(dev_priv->dev, mode_cmd,
bo, &surface);
if (ret)
return ERR_PTR(ret);
is_bo_proxy = true;
}
/* Create the new framebuffer depending one what we have */
if (surface) {
ret = vmw_kms_new_framebuffer_surface(dev_priv, surface, &vfb,
mode_cmd,
is_bo_proxy);
/*
* vmw_create_bo_proxy() adds a reference that is no longer
* needed
*/
if (is_bo_proxy)
vmw_surface_unreference(&surface);
} else if (bo) {
ret = vmw_kms_new_framebuffer_bo(dev_priv, bo, &vfb,
mode_cmd);
} else {
BUG();
}
if (ret)
return ERR_PTR(ret);
vfb->pin = vmw_framebuffer_pin;
vfb->unpin = vmw_framebuffer_unpin;
return vfb;
}
/*
* Generic Kernel modesetting functions
*/
static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
struct drm_file *file_priv,
const struct drm_mode_fb_cmd2 *mode_cmd)
{
struct vmw_private *dev_priv = vmw_priv(dev);
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
struct vmw_framebuffer *vfb = NULL;
struct vmw_surface *surface = NULL;
struct vmw_buffer_object *bo = NULL;
struct ttm_base_object *user_obj;
int ret;
/*
* Take a reference on the user object of the resource
* backing the kms fb. This ensures that user-space handle
* lookups on that resource will always work as long as
* it's registered with a kms framebuffer. This is important,
* since vmw_execbuf_process identifies resources in the
* command stream using user-space handles.
*/
user_obj = ttm_base_object_lookup(tfile, mode_cmd->handles[0]);
if (unlikely(user_obj == NULL)) {
DRM_ERROR("Could not locate requested kms frame buffer.\n");
return ERR_PTR(-ENOENT);
}
/**
* End conditioned code.
*/
/* returns either a bo or surface */
ret = vmw_user_lookup_handle(dev_priv, tfile,
mode_cmd->handles[0],
&surface, &bo);
if (ret)
goto err_out;
if (!bo &&
!vmw_kms_srf_ok(dev_priv, mode_cmd->width, mode_cmd->height)) {
DRM_ERROR("Surface size cannot exceed %dx%d",
dev_priv->texture_max_width,
dev_priv->texture_max_height);
goto err_out;
}
vfb = vmw_kms_new_framebuffer(dev_priv, bo, surface,
!(dev_priv->capabilities & SVGA_CAP_3D),
mode_cmd);
if (IS_ERR(vfb)) {
ret = PTR_ERR(vfb);
goto err_out;
}
err_out:
/* vmw_user_lookup_handle takes one ref so does new_fb */
if (bo)
vmw_bo_unreference(&bo);
if (surface)
vmw_surface_unreference(&surface);
if (ret) {
DRM_ERROR("failed to create vmw_framebuffer: %i\n", ret);
ttm_base_object_unref(&user_obj);
return ERR_PTR(ret);
} else
vfb->user_obj = user_obj;
return &vfb->base;
}
/**
* vmw_kms_check_display_memory - Validates display memory required for a
* topology
* @dev: DRM device
* @num_rects: number of drm_rect in rects
* @rects: array of drm_rect representing the topology to validate indexed by
* crtc index.
*
* Returns:
* 0 on success otherwise negative error code
*/
static int vmw_kms_check_display_memory(struct drm_device *dev,
uint32_t num_rects,
struct drm_rect *rects)
{
struct vmw_private *dev_priv = vmw_priv(dev);
struct drm_rect bounding_box = {0};
u64 total_pixels = 0, pixel_mem, bb_mem;
int i;
for (i = 0; i < num_rects; i++) {
/*
* For STDU only individual screen (screen target) is limited by
* SCREENTARGET_MAX_WIDTH/HEIGHT registers.
*/
if (dev_priv->active_display_unit == vmw_du_screen_target &&
(drm_rect_width(&rects[i]) > dev_priv->stdu_max_width ||
drm_rect_height(&rects[i]) > dev_priv->stdu_max_height)) {
DRM_ERROR("Screen size not supported.\n");
return -EINVAL;
}
/* Bounding box upper left is at (0,0). */
if (rects[i].x2 > bounding_box.x2)
bounding_box.x2 = rects[i].x2;
if (rects[i].y2 > bounding_box.y2)
bounding_box.y2 = rects[i].y2;
total_pixels += (u64) drm_rect_width(&rects[i]) *
(u64) drm_rect_height(&rects[i]);
}
/* Virtual svga device primary limits are always in 32-bpp. */
pixel_mem = total_pixels * 4;
/*
* For HV10 and below prim_bb_mem is vram size. When
* SVGA_REG_MAX_PRIMARY_BOUNDING_BOX_MEM is not present vram size is
* limit on primary bounding box
*/
if (pixel_mem > dev_priv->prim_bb_mem) {
DRM_ERROR("Combined output size too large.\n");
return -EINVAL;
}
/* SVGA_CAP_NO_BB_RESTRICTION is available for STDU only. */
if (dev_priv->active_display_unit != vmw_du_screen_target ||
!(dev_priv->capabilities & SVGA_CAP_NO_BB_RESTRICTION)) {
bb_mem = (u64) bounding_box.x2 * bounding_box.y2 * 4;
if (bb_mem > dev_priv->prim_bb_mem) {
DRM_ERROR("Topology is beyond supported limits.\n");
return -EINVAL;
}
}
return 0;
}
/**
* vmw_crtc_state_and_lock - Return new or current crtc state with locked
* crtc mutex
* @state: The atomic state pointer containing the new atomic state
* @crtc: The crtc
*
* This function returns the new crtc state if it's part of the state update.
* Otherwise returns the current crtc state. It also makes sure that the
* crtc mutex is locked.
*
* Returns: A valid crtc state pointer or NULL. It may also return a
* pointer error, in particular -EDEADLK if locking needs to be rerun.
*/
static struct drm_crtc_state *
vmw_crtc_state_and_lock(struct drm_atomic_state *state, struct drm_crtc *crtc)
{
struct drm_crtc_state *crtc_state;
crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
if (crtc_state) {
lockdep_assert_held(&crtc->mutex.mutex.base);
} else {
int ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx);
if (ret != 0 && ret != -EALREADY)
return ERR_PTR(ret);
crtc_state = crtc->state;
}
return crtc_state;
}
/**
* vmw_kms_check_implicit - Verify that all implicit display units scan out
* from the same fb after the new state is committed.
* @dev: The drm_device.
* @state: The new state to be checked.
*
* Returns:
* Zero on success,
* -EINVAL on invalid state,
* -EDEADLK if modeset locking needs to be rerun.
*/
static int vmw_kms_check_implicit(struct drm_device *dev,
struct drm_atomic_state *state)
{
struct drm_framebuffer *implicit_fb = NULL;
struct drm_crtc *crtc;
struct drm_crtc_state *crtc_state;
struct drm_plane_state *plane_state;
drm_for_each_crtc(crtc, dev) {
struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
if (!du->is_implicit)
continue;
crtc_state = vmw_crtc_state_and_lock(state, crtc);
if (IS_ERR(crtc_state))
return PTR_ERR(crtc_state);
if (!crtc_state || !crtc_state->enable)
continue;
/*
* Can't move primary planes across crtcs, so this is OK.
* It also means we don't need to take the plane mutex.
*/
plane_state = du->primary.state;
if (plane_state->crtc != crtc)
continue;
if (!implicit_fb)
implicit_fb = plane_state->fb;
else if (implicit_fb != plane_state->fb)
return -EINVAL;
}
return 0;
}
/**
* vmw_kms_check_topology - Validates topology in drm_atomic_state
* @dev: DRM device
* @state: the driver state object
*
* Returns:
* 0 on success otherwise negative error code
*/
static int vmw_kms_check_topology(struct drm_device *dev,
struct drm_atomic_state *state)
{
struct drm_crtc_state *old_crtc_state, *new_crtc_state;
struct drm_rect *rects;
struct drm_crtc *crtc;
uint32_t i;
int ret = 0;
rects = kcalloc(dev->mode_config.num_crtc, sizeof(struct drm_rect),
GFP_KERNEL);
if (!rects)
return -ENOMEM;
drm_for_each_crtc(crtc, dev) {
struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
struct drm_crtc_state *crtc_state;
i = drm_crtc_index(crtc);
crtc_state = vmw_crtc_state_and_lock(state, crtc);
if (IS_ERR(crtc_state)) {
ret = PTR_ERR(crtc_state);
goto clean;
}
if (!crtc_state)
continue;
if (crtc_state->enable) {
rects[i].x1 = du->gui_x;
rects[i].y1 = du->gui_y;
rects[i].x2 = du->gui_x + crtc_state->mode.hdisplay;
rects[i].y2 = du->gui_y + crtc_state->mode.vdisplay;
} else {
rects[i].x1 = 0;
rects[i].y1 = 0;
rects[i].x2 = 0;
rects[i].y2 = 0;
}
}
/* Determine change to topology due to new atomic state */
for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state,
new_crtc_state, i) {
struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
struct drm_connector *connector;
struct drm_connector_state *conn_state;
struct vmw_connector_state *vmw_conn_state;
if (!du->pref_active) {
ret = -EINVAL;
goto clean;
}
/*
* For vmwgfx each crtc has only one connector attached and it
* is not changed so don't really need to check the
* crtc->connector_mask and iterate over it.
*/
connector = &du->connector;
conn_state = drm_atomic_get_connector_state(state, connector);
if (IS_ERR(conn_state)) {
ret = PTR_ERR(conn_state);
goto clean;
}
vmw_conn_state = vmw_connector_state_to_vcs(conn_state);
vmw_conn_state->gui_x = du->gui_x;
vmw_conn_state->gui_y = du->gui_y;
}
ret = vmw_kms_check_display_memory(dev, dev->mode_config.num_crtc,
rects);
clean:
kfree(rects);
return ret;
}
/**
* vmw_kms_atomic_check_modeset- validate state object for modeset changes
*
* @dev: DRM device
* @state: the driver state object
*
* This is a simple wrapper around drm_atomic_helper_check_modeset() for
* us to assign a value to mode->crtc_clock so that
* drm_calc_timestamping_constants() won't throw an error message
*
* Returns:
* Zero for success or -errno
*/
static int
vmw_kms_atomic_check_modeset(struct drm_device *dev,
struct drm_atomic_state *state)
{
struct drm_crtc *crtc;
struct drm_crtc_state *crtc_state;
bool need_modeset = false;
int i, ret;
ret = drm_atomic_helper_check(dev, state);
if (ret)
return ret;
ret = vmw_kms_check_implicit(dev, state);
if (ret)
return ret;
if (!state->allow_modeset)
return ret;
/*
* Legacy path do not set allow_modeset properly like
* @drm_atomic_helper_update_plane, This will result in unnecessary call
* to vmw_kms_check_topology. So extra set of check.
*/
for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
if (drm_atomic_crtc_needs_modeset(crtc_state))
need_modeset = true;
}
if (need_modeset)
return vmw_kms_check_topology(dev, state);
return ret;
}
static const struct drm_mode_config_funcs vmw_kms_funcs = {
.fb_create = vmw_kms_fb_create,
.atomic_check = vmw_kms_atomic_check_modeset,
.atomic_commit = drm_atomic_helper_commit,
};
static int vmw_kms_generic_present(struct vmw_private *dev_priv,
struct drm_file *file_priv,
struct vmw_framebuffer *vfb,
struct vmw_surface *surface,
uint32_t sid,
int32_t destX, int32_t destY,
struct drm_vmw_rect *clips,
uint32_t num_clips)
{
return vmw_kms_sou_do_surface_dirty(dev_priv, vfb, NULL, clips,
&surface->res, destX, destY,
num_clips, 1, NULL, NULL);
}
int vmw_kms_present(struct vmw_private *dev_priv,
struct drm_file *file_priv,
struct vmw_framebuffer *vfb,
struct vmw_surface *surface,
uint32_t sid,
int32_t destX, int32_t destY,
struct drm_vmw_rect *clips,
uint32_t num_clips)
{
int ret;
switch (dev_priv->active_display_unit) {
case vmw_du_screen_target:
ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, clips,
&surface->res, destX, destY,
num_clips, 1, NULL, NULL);
break;
case vmw_du_screen_object:
ret = vmw_kms_generic_present(dev_priv, file_priv, vfb, surface,
sid, destX, destY, clips,
num_clips);
break;
default:
WARN_ONCE(true,
"Present called with invalid display system.\n");
ret = -ENOSYS;
break;
}
if (ret)
return ret;
vmw_fifo_flush(dev_priv, false);
return 0;
}
static void
vmw_kms_create_hotplug_mode_update_property(struct vmw_private *dev_priv)
{
if (dev_priv->hotplug_mode_update_property)
return;
dev_priv->hotplug_mode_update_property =
drm_property_create_range(dev_priv->dev,
DRM_MODE_PROP_IMMUTABLE,
"hotplug_mode_update", 0, 1);
if (!dev_priv->hotplug_mode_update_property)
return;
}
int vmw_kms_init(struct vmw_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
int ret;
drm_mode_config_init(dev);
dev->mode_config.funcs = &vmw_kms_funcs;
dev->mode_config.min_width = 1;
dev->mode_config.min_height = 1;
dev->mode_config.max_width = dev_priv->texture_max_width;
dev->mode_config.max_height = dev_priv->texture_max_height;
drm_mode_create_suggested_offset_properties(dev);
vmw_kms_create_hotplug_mode_update_property(dev_priv);
ret = vmw_kms_stdu_init_display(dev_priv);
if (ret) {
ret = vmw_kms_sou_init_display(dev_priv);
if (ret) /* Fallback */
ret = vmw_kms_ldu_init_display(dev_priv);
}
return ret;
}
int vmw_kms_close(struct vmw_private *dev_priv)
{
int ret = 0;
/*
* Docs says we should take the lock before calling this function
* but since it destroys encoders and our destructor calls
* drm_encoder_cleanup which takes the lock we deadlock.
*/
drm_mode_config_cleanup(dev_priv->dev);
if (dev_priv->active_display_unit == vmw_du_legacy)
ret = vmw_kms_ldu_close_display(dev_priv);
return ret;
}
int vmw_kms_cursor_bypass_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_vmw_cursor_bypass_arg *arg = data;
struct vmw_display_unit *du;
struct drm_crtc *crtc;
int ret = 0;
mutex_lock(&dev->mode_config.mutex);
if (arg->flags & DRM_VMW_CURSOR_BYPASS_ALL) {
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
du = vmw_crtc_to_du(crtc);
du->hotspot_x = arg->xhot;
du->hotspot_y = arg->yhot;
}
mutex_unlock(&dev->mode_config.mutex);
return 0;
}
crtc = drm_crtc_find(dev, file_priv, arg->crtc_id);
if (!crtc) {
ret = -ENOENT;
goto out;
}
du = vmw_crtc_to_du(crtc);
du->hotspot_x = arg->xhot;
du->hotspot_y = arg->yhot;
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
int vmw_kms_write_svga(struct vmw_private *vmw_priv,
unsigned width, unsigned height, unsigned pitch,
unsigned bpp, unsigned depth)
{
if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
vmw_write(vmw_priv, SVGA_REG_PITCHLOCK, pitch);
else if (vmw_fifo_have_pitchlock(vmw_priv))
vmw_mmio_write(pitch, vmw_priv->mmio_virt +
SVGA_FIFO_PITCHLOCK);
vmw_write(vmw_priv, SVGA_REG_WIDTH, width);
vmw_write(vmw_priv, SVGA_REG_HEIGHT, height);
vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, bpp);
if (vmw_read(vmw_priv, SVGA_REG_DEPTH) != depth) {
DRM_ERROR("Invalid depth %u for %u bpp, host expects %u\n",
depth, bpp, vmw_read(vmw_priv, SVGA_REG_DEPTH));
return -EINVAL;
}
return 0;
}
int vmw_kms_save_vga(struct vmw_private *vmw_priv)
{
struct vmw_vga_topology_state *save;
uint32_t i;
vmw_priv->vga_width = vmw_read(vmw_priv, SVGA_REG_WIDTH);
vmw_priv->vga_height = vmw_read(vmw_priv, SVGA_REG_HEIGHT);
vmw_priv->vga_bpp = vmw_read(vmw_priv, SVGA_REG_BITS_PER_PIXEL);
if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
vmw_priv->vga_pitchlock =
vmw_read(vmw_priv, SVGA_REG_PITCHLOCK);
else if (vmw_fifo_have_pitchlock(vmw_priv))
vmw_priv->vga_pitchlock = vmw_mmio_read(vmw_priv->mmio_virt +
SVGA_FIFO_PITCHLOCK);
if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
return 0;
vmw_priv->num_displays = vmw_read(vmw_priv,
SVGA_REG_NUM_GUEST_DISPLAYS);
if (vmw_priv->num_displays == 0)
vmw_priv->num_displays = 1;
for (i = 0; i < vmw_priv->num_displays; ++i) {
save = &vmw_priv->vga_save[i];
vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
save->primary = vmw_read(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY);
save->pos_x = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_X);
save->pos_y = vmw_read(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y);
save->width = vmw_read(vmw_priv, SVGA_REG_DISPLAY_WIDTH);
save->height = vmw_read(vmw_priv, SVGA_REG_DISPLAY_HEIGHT);
vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
if (i == 0 && vmw_priv->num_displays == 1 &&
save->width == 0 && save->height == 0) {
/*
* It should be fairly safe to assume that these
* values are uninitialized.
*/
save->width = vmw_priv->vga_width - save->pos_x;
save->height = vmw_priv->vga_height - save->pos_y;
}
}
return 0;
}
int vmw_kms_restore_vga(struct vmw_private *vmw_priv)
{
struct vmw_vga_topology_state *save;
uint32_t i;
vmw_write(vmw_priv, SVGA_REG_WIDTH, vmw_priv->vga_width);
vmw_write(vmw_priv, SVGA_REG_HEIGHT, vmw_priv->vga_height);
vmw_write(vmw_priv, SVGA_REG_BITS_PER_PIXEL, vmw_priv->vga_bpp);
if (vmw_priv->capabilities & SVGA_CAP_PITCHLOCK)
vmw_write(vmw_priv, SVGA_REG_PITCHLOCK,
vmw_priv->vga_pitchlock);
else if (vmw_fifo_have_pitchlock(vmw_priv))
vmw_mmio_write(vmw_priv->vga_pitchlock,
vmw_priv->mmio_virt + SVGA_FIFO_PITCHLOCK);
if (!(vmw_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY))
return 0;
for (i = 0; i < vmw_priv->num_displays; ++i) {
save = &vmw_priv->vga_save[i];
vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, i);
vmw_write(vmw_priv, SVGA_REG_DISPLAY_IS_PRIMARY, save->primary);
vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_X, save->pos_x);
vmw_write(vmw_priv, SVGA_REG_DISPLAY_POSITION_Y, save->pos_y);
vmw_write(vmw_priv, SVGA_REG_DISPLAY_WIDTH, save->width);
vmw_write(vmw_priv, SVGA_REG_DISPLAY_HEIGHT, save->height);
vmw_write(vmw_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
}
return 0;
}
bool vmw_kms_validate_mode_vram(struct vmw_private *dev_priv,
uint32_t pitch,
uint32_t height)
{
return ((u64) pitch * (u64) height) < (u64)
((dev_priv->active_display_unit == vmw_du_screen_target) ?
dev_priv->prim_bb_mem : dev_priv->vram_size);
}
/**
* Function called by DRM code called with vbl_lock held.
*/
u32 vmw_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
{
return 0;
}
/**
* Function called by DRM code called with vbl_lock held.
*/
int vmw_enable_vblank(struct drm_device *dev, unsigned int pipe)
{
return -EINVAL;
}
/**
* Function called by DRM code called with vbl_lock held.
*/
void vmw_disable_vblank(struct drm_device *dev, unsigned int pipe)
{
}
/**
* vmw_du_update_layout - Update the display unit with topology from resolution
* plugin and generate DRM uevent
* @dev_priv: device private
* @num_rects: number of drm_rect in rects
* @rects: toplogy to update
*/
static int vmw_du_update_layout(struct vmw_private *dev_priv,
unsigned int num_rects, struct drm_rect *rects)
{
struct drm_device *dev = dev_priv->dev;
struct vmw_display_unit *du;
struct drm_connector *con;
struct drm_connector_list_iter conn_iter;
struct drm_modeset_acquire_ctx ctx;
struct drm_crtc *crtc;
int ret;
/* Currently gui_x/y is protected with the crtc mutex */
mutex_lock(&dev->mode_config.mutex);
drm_modeset_acquire_init(&ctx, 0);
retry:
drm_for_each_crtc(crtc, dev) {
ret = drm_modeset_lock(&crtc->mutex, &ctx);
if (ret < 0) {
if (ret == -EDEADLK) {
drm_modeset_backoff(&ctx);
goto retry;
}
goto out_fini;
}
}
drm_connector_list_iter_begin(dev, &conn_iter);
drm_for_each_connector_iter(con, &conn_iter) {
du = vmw_connector_to_du(con);
if (num_rects > du->unit) {
du->pref_width = drm_rect_width(&rects[du->unit]);
du->pref_height = drm_rect_height(&rects[du->unit]);
du->pref_active = true;
du->gui_x = rects[du->unit].x1;
du->gui_y = rects[du->unit].y1;
} else {
du->pref_width = 800;
du->pref_height = 600;
du->pref_active = false;
du->gui_x = 0;
du->gui_y = 0;
}
}
drm_connector_list_iter_end(&conn_iter);
list_for_each_entry(con, &dev->mode_config.connector_list, head) {
du = vmw_connector_to_du(con);
if (num_rects > du->unit) {
drm_object_property_set_value
(&con->base, dev->mode_config.suggested_x_property,
du->gui_x);
drm_object_property_set_value
(&con->base, dev->mode_config.suggested_y_property,
du->gui_y);
} else {
drm_object_property_set_value
(&con->base, dev->mode_config.suggested_x_property,
0);
drm_object_property_set_value
(&con->base, dev->mode_config.suggested_y_property,
0);
}
con->status = vmw_du_connector_detect(con, true);
}
drm_sysfs_hotplug_event(dev);
out_fini:
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
mutex_unlock(&dev->mode_config.mutex);
return 0;
}
int vmw_du_crtc_gamma_set(struct drm_crtc *crtc,
u16 *r, u16 *g, u16 *b,
uint32_t size,
struct drm_modeset_acquire_ctx *ctx)
{
struct vmw_private *dev_priv = vmw_priv(crtc->dev);
int i;
for (i = 0; i < size; i++) {
DRM_DEBUG("%d r/g/b = 0x%04x / 0x%04x / 0x%04x\n", i,
r[i], g[i], b[i]);
vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 0, r[i] >> 8);
vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 1, g[i] >> 8);
vmw_write(dev_priv, SVGA_PALETTE_BASE + i * 3 + 2, b[i] >> 8);
}
return 0;
}
int vmw_du_connector_dpms(struct drm_connector *connector, int mode)
{
return 0;
}
enum drm_connector_status
vmw_du_connector_detect(struct drm_connector *connector, bool force)
{
uint32_t num_displays;
struct drm_device *dev = connector->dev;
struct vmw_private *dev_priv = vmw_priv(dev);
struct vmw_display_unit *du = vmw_connector_to_du(connector);
num_displays = vmw_read(dev_priv, SVGA_REG_NUM_DISPLAYS);
return ((vmw_connector_to_du(connector)->unit < num_displays &&
du->pref_active) ?
connector_status_connected : connector_status_disconnected);
}
static struct drm_display_mode vmw_kms_connector_builtin[] = {
/* 640x480@60Hz */
{ DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
752, 800, 0, 480, 489, 492, 525, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 800x600@60Hz */
{ DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 40000, 800, 840,
968, 1056, 0, 600, 601, 605, 628, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1024x768@60Hz */
{ DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 65000, 1024, 1048,
1184, 1344, 0, 768, 771, 777, 806, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1152x864@75Hz */
{ DRM_MODE("1152x864", DRM_MODE_TYPE_DRIVER, 108000, 1152, 1216,
1344, 1600, 0, 864, 865, 868, 900, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1280x768@60Hz */
{ DRM_MODE("1280x768", DRM_MODE_TYPE_DRIVER, 79500, 1280, 1344,
1472, 1664, 0, 768, 771, 778, 798, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1280x800@60Hz */
{ DRM_MODE("1280x800", DRM_MODE_TYPE_DRIVER, 83500, 1280, 1352,
1480, 1680, 0, 800, 803, 809, 831, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC) },
/* 1280x960@60Hz */
{ DRM_MODE("1280x960", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1376,
1488, 1800, 0, 960, 961, 964, 1000, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1280x1024@60Hz */
{ DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 108000, 1280, 1328,
1440, 1688, 0, 1024, 1025, 1028, 1066, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1360x768@60Hz */
{ DRM_MODE("1360x768", DRM_MODE_TYPE_DRIVER, 85500, 1360, 1424,
1536, 1792, 0, 768, 771, 777, 795, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1440x1050@60Hz */
{ DRM_MODE("1400x1050", DRM_MODE_TYPE_DRIVER, 121750, 1400, 1488,
1632, 1864, 0, 1050, 1053, 1057, 1089, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1440x900@60Hz */
{ DRM_MODE("1440x900", DRM_MODE_TYPE_DRIVER, 106500, 1440, 1520,
1672, 1904, 0, 900, 903, 909, 934, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1600x1200@60Hz */
{ DRM_MODE("1600x1200", DRM_MODE_TYPE_DRIVER, 162000, 1600, 1664,
1856, 2160, 0, 1200, 1201, 1204, 1250, 0,
DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1680x1050@60Hz */
{ DRM_MODE("1680x1050", DRM_MODE_TYPE_DRIVER, 146250, 1680, 1784,
1960, 2240, 0, 1050, 1053, 1059, 1089, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1792x1344@60Hz */
{ DRM_MODE("1792x1344", DRM_MODE_TYPE_DRIVER, 204750, 1792, 1920,
2120, 2448, 0, 1344, 1345, 1348, 1394, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1853x1392@60Hz */
{ DRM_MODE("1856x1392", DRM_MODE_TYPE_DRIVER, 218250, 1856, 1952,
2176, 2528, 0, 1392, 1393, 1396, 1439, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1920x1200@60Hz */
{ DRM_MODE("1920x1200", DRM_MODE_TYPE_DRIVER, 193250, 1920, 2056,
2256, 2592, 0, 1200, 1203, 1209, 1245, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 1920x1440@60Hz */
{ DRM_MODE("1920x1440", DRM_MODE_TYPE_DRIVER, 234000, 1920, 2048,
2256, 2600, 0, 1440, 1441, 1444, 1500, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* 2560x1600@60Hz */
{ DRM_MODE("2560x1600", DRM_MODE_TYPE_DRIVER, 348500, 2560, 2752,
3032, 3504, 0, 1600, 1603, 1609, 1658, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC) },
/* Terminate */
{ DRM_MODE("", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) },
};
/**
* vmw_guess_mode_timing - Provide fake timings for a
* 60Hz vrefresh mode.
*
* @mode - Pointer to a struct drm_display_mode with hdisplay and vdisplay
* members filled in.
*/
void vmw_guess_mode_timing(struct drm_display_mode *mode)
{
mode->hsync_start = mode->hdisplay + 50;
mode->hsync_end = mode->hsync_start + 50;
mode->htotal = mode->hsync_end + 50;
mode->vsync_start = mode->vdisplay + 50;
mode->vsync_end = mode->vsync_start + 50;
mode->vtotal = mode->vsync_end + 50;
mode->clock = (u32)mode->htotal * (u32)mode->vtotal / 100 * 6;
mode->vrefresh = drm_mode_vrefresh(mode);
}
int vmw_du_connector_fill_modes(struct drm_connector *connector,
uint32_t max_width, uint32_t max_height)
{
struct vmw_display_unit *du = vmw_connector_to_du(connector);
struct drm_device *dev = connector->dev;
struct vmw_private *dev_priv = vmw_priv(dev);
struct drm_display_mode *mode = NULL;
struct drm_display_mode *bmode;
struct drm_display_mode prefmode = { DRM_MODE("preferred",
DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC)
};
int i;
u32 assumed_bpp = 4;
if (dev_priv->assume_16bpp)
assumed_bpp = 2;
max_width = min(max_width, dev_priv->texture_max_width);
max_height = min(max_height, dev_priv->texture_max_height);
/*
* For STDU extra limit for a mode on SVGA_REG_SCREENTARGET_MAX_WIDTH/
* HEIGHT registers.
*/
if (dev_priv->active_display_unit == vmw_du_screen_target) {
max_width = min(max_width, dev_priv->stdu_max_width);
max_height = min(max_height, dev_priv->stdu_max_height);
}
/* Add preferred mode */
mode = drm_mode_duplicate(dev, &prefmode);
if (!mode)
return 0;
mode->hdisplay = du->pref_width;
mode->vdisplay = du->pref_height;
vmw_guess_mode_timing(mode);
if (vmw_kms_validate_mode_vram(dev_priv,
mode->hdisplay * assumed_bpp,
mode->vdisplay)) {
drm_mode_probed_add(connector, mode);
} else {
drm_mode_destroy(dev, mode);
mode = NULL;
}
if (du->pref_mode) {
list_del_init(&du->pref_mode->head);
drm_mode_destroy(dev, du->pref_mode);
}
/* mode might be null here, this is intended */
du->pref_mode = mode;
for (i = 0; vmw_kms_connector_builtin[i].type != 0; i++) {
bmode = &vmw_kms_connector_builtin[i];
if (bmode->hdisplay > max_width ||
bmode->vdisplay > max_height)
continue;
if (!vmw_kms_validate_mode_vram(dev_priv,
bmode->hdisplay * assumed_bpp,
bmode->vdisplay))
continue;
mode = drm_mode_duplicate(dev, bmode);
if (!mode)
return 0;
mode->vrefresh = drm_mode_vrefresh(mode);
drm_mode_probed_add(connector, mode);
}
drm_connector_list_update(connector);
/* Move the prefered mode first, help apps pick the right mode. */
drm_mode_sort(&connector->modes);
return 1;
}
/**
* vmw_kms_update_layout_ioctl - Handler for DRM_VMW_UPDATE_LAYOUT ioctl
* @dev: drm device for the ioctl
* @data: data pointer for the ioctl
* @file_priv: drm file for the ioctl call
*
* Update preferred topology of display unit as per ioctl request. The topology
* is expressed as array of drm_vmw_rect.
* e.g.
* [0 0 640 480] [640 0 800 600] [0 480 640 480]
*
* NOTE:
* The x and y offset (upper left) in drm_vmw_rect cannot be less than 0. Beside
* device limit on topology, x + w and y + h (lower right) cannot be greater
* than INT_MAX. So topology beyond these limits will return with error.
*
* Returns:
* Zero on success, negative errno on failure.
*/
int vmw_kms_update_layout_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct vmw_private *dev_priv = vmw_priv(dev);
struct drm_mode_config *mode_config = &dev->mode_config;
struct drm_vmw_update_layout_arg *arg =
(struct drm_vmw_update_layout_arg *)data;
void __user *user_rects;
struct drm_vmw_rect *rects;
struct drm_rect *drm_rects;
unsigned rects_size;
int ret, i;
if (!arg->num_outputs) {
struct drm_rect def_rect = {0, 0, 800, 600};
vmw_du_update_layout(dev_priv, 1, &def_rect);
return 0;
}
rects_size = arg->num_outputs * sizeof(struct drm_vmw_rect);
rects = kcalloc(arg->num_outputs, sizeof(struct drm_vmw_rect),
GFP_KERNEL);
if (unlikely(!rects))
return -ENOMEM;
user_rects = (void __user *)(unsigned long)arg->rects;
ret = copy_from_user(rects, user_rects, rects_size);
if (unlikely(ret != 0)) {
DRM_ERROR("Failed to get rects.\n");
ret = -EFAULT;
goto out_free;
}
drm_rects = (struct drm_rect *)rects;
for (i = 0; i < arg->num_outputs; i++) {
struct drm_vmw_rect curr_rect;
/* Verify user-space for overflow as kernel use drm_rect */
if ((rects[i].x + rects[i].w > INT_MAX) ||
(rects[i].y + rects[i].h > INT_MAX)) {
ret = -ERANGE;
goto out_free;
}
curr_rect = rects[i];
drm_rects[i].x1 = curr_rect.x;
drm_rects[i].y1 = curr_rect.y;
drm_rects[i].x2 = curr_rect.x + curr_rect.w;
drm_rects[i].y2 = curr_rect.y + curr_rect.h;
/*
* Currently this check is limiting the topology within
* mode_config->max (which actually is max texture size
* supported by virtual device). This limit is here to address
* window managers that create a big framebuffer for whole
* topology.
*/
if (drm_rects[i].x1 < 0 || drm_rects[i].y1 < 0 ||
drm_rects[i].x2 > mode_config->max_width ||
drm_rects[i].y2 > mode_config->max_height) {
DRM_ERROR("Invalid GUI layout.\n");
ret = -EINVAL;
goto out_free;
}
}
ret = vmw_kms_check_display_memory(dev, arg->num_outputs, drm_rects);
if (ret == 0)
vmw_du_update_layout(dev_priv, arg->num_outputs, drm_rects);
out_free:
kfree(rects);
return ret;
}
/**
* vmw_kms_helper_dirty - Helper to build commands and perform actions based
* on a set of cliprects and a set of display units.
*
* @dev_priv: Pointer to a device private structure.
* @framebuffer: Pointer to the framebuffer on which to perform the actions.
* @clips: A set of struct drm_clip_rect. Either this os @vclips must be NULL.
* Cliprects are given in framebuffer coordinates.
* @vclips: A set of struct drm_vmw_rect cliprects. Either this or @clips must
* be NULL. Cliprects are given in source coordinates.
* @dest_x: X coordinate offset for the crtc / destination clip rects.
* @dest_y: Y coordinate offset for the crtc / destination clip rects.
* @num_clips: Number of cliprects in the @clips or @vclips array.
* @increment: Integer with which to increment the clip counter when looping.
* Used to skip a predetermined number of clip rects.
* @dirty: Closure structure. See the description of struct vmw_kms_dirty.
*/
int vmw_kms_helper_dirty(struct vmw_private *dev_priv,
struct vmw_framebuffer *framebuffer,
const struct drm_clip_rect *clips,
const struct drm_vmw_rect *vclips,
s32 dest_x, s32 dest_y,
int num_clips,
int increment,
struct vmw_kms_dirty *dirty)
{
struct vmw_display_unit *units[VMWGFX_NUM_DISPLAY_UNITS];
struct drm_crtc *crtc;
u32 num_units = 0;
u32 i, k;
dirty->dev_priv = dev_priv;
/* If crtc is passed, no need to iterate over other display units */
if (dirty->crtc) {
units[num_units++] = vmw_crtc_to_du(dirty->crtc);
} else {
list_for_each_entry(crtc, &dev_priv->dev->mode_config.crtc_list,
head) {
struct drm_plane *plane = crtc->primary;
if (plane->state->fb == &framebuffer->base)
units[num_units++] = vmw_crtc_to_du(crtc);
}
}
for (k = 0; k < num_units; k++) {
struct vmw_display_unit *unit = units[k];
s32 crtc_x = unit->crtc.x;
s32 crtc_y = unit->crtc.y;
s32 crtc_width = unit->crtc.mode.hdisplay;
s32 crtc_height = unit->crtc.mode.vdisplay;
const struct drm_clip_rect *clips_ptr = clips;
const struct drm_vmw_rect *vclips_ptr = vclips;
dirty->unit = unit;
if (dirty->fifo_reserve_size > 0) {
dirty->cmd = vmw_fifo_reserve(dev_priv,
dirty->fifo_reserve_size);
if (!dirty->cmd) {
DRM_ERROR("Couldn't reserve fifo space "
"for dirty blits.\n");
return -ENOMEM;
}
memset(dirty->cmd, 0, dirty->fifo_reserve_size);
}
dirty->num_hits = 0;
for (i = 0; i < num_clips; i++, clips_ptr += increment,
vclips_ptr += increment) {
s32 clip_left;
s32 clip_top;
/*
* Select clip array type. Note that integer type
* in @clips is unsigned short, whereas in @vclips
* it's 32-bit.
*/
if (clips) {
dirty->fb_x = (s32) clips_ptr->x1;
dirty->fb_y = (s32) clips_ptr->y1;
dirty->unit_x2 = (s32) clips_ptr->x2 + dest_x -
crtc_x;
dirty->unit_y2 = (s32) clips_ptr->y2 + dest_y -
crtc_y;
} else {
dirty->fb_x = vclips_ptr->x;
dirty->fb_y = vclips_ptr->y;
dirty->unit_x2 = dirty->fb_x + vclips_ptr->w +
dest_x - crtc_x;
dirty->unit_y2 = dirty->fb_y + vclips_ptr->h +
dest_y - crtc_y;
}
dirty->unit_x1 = dirty->fb_x + dest_x - crtc_x;
dirty->unit_y1 = dirty->fb_y + dest_y - crtc_y;
/* Skip this clip if it's outside the crtc region */
if (dirty->unit_x1 >= crtc_width ||
dirty->unit_y1 >= crtc_height ||
dirty->unit_x2 <= 0 || dirty->unit_y2 <= 0)
continue;
/* Clip right and bottom to crtc limits */
dirty->unit_x2 = min_t(s32, dirty->unit_x2,
crtc_width);
dirty->unit_y2 = min_t(s32, dirty->unit_y2,
crtc_height);
/* Clip left and top to crtc limits */
clip_left = min_t(s32, dirty->unit_x1, 0);
clip_top = min_t(s32, dirty->unit_y1, 0);
dirty->unit_x1 -= clip_left;
dirty->unit_y1 -= clip_top;
dirty->fb_x -= clip_left;
dirty->fb_y -= clip_top;
dirty->clip(dirty);
}
dirty->fifo_commit(dirty);
}
return 0;
}
/**
* vmw_kms_helper_validation_finish - Helper for post KMS command submission
* cleanup and fencing
* @dev_priv: Pointer to the device-private struct
* @file_priv: Pointer identifying the client when user-space fencing is used
* @ctx: Pointer to the validation context
* @out_fence: If non-NULL, returned refcounted fence-pointer
* @user_fence_rep: If non-NULL, pointer to user-space address area
* in which to copy user-space fence info
*/
void vmw_kms_helper_validation_finish(struct vmw_private *dev_priv,
struct drm_file *file_priv,
struct vmw_validation_context *ctx,
struct vmw_fence_obj **out_fence,
struct drm_vmw_fence_rep __user *
user_fence_rep)
{
struct vmw_fence_obj *fence = NULL;
uint32_t handle;
int ret;
if (file_priv || user_fence_rep || vmw_validation_has_bos(ctx) ||
out_fence)
ret = vmw_execbuf_fence_commands(file_priv, dev_priv, &fence,
file_priv ? &handle : NULL);
vmw_validation_done(ctx, fence);
if (file_priv)
vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv),
ret, user_fence_rep, fence,
handle, -1, NULL);
if (out_fence)
*out_fence = fence;
else
vmw_fence_obj_unreference(&fence);
}
/**
* vmw_kms_update_proxy - Helper function to update a proxy surface from
* its backing MOB.
*
* @res: Pointer to the surface resource
* @clips: Clip rects in framebuffer (surface) space.
* @num_clips: Number of clips in @clips.
* @increment: Integer with which to increment the clip counter when looping.
* Used to skip a predetermined number of clip rects.
*
* This function makes sure the proxy surface is updated from its backing MOB
* using the region given by @clips. The surface resource @res and its backing
* MOB needs to be reserved and validated on call.
*/
int vmw_kms_update_proxy(struct vmw_resource *res,
const struct drm_clip_rect *clips,
unsigned num_clips,
int increment)
{
struct vmw_private *dev_priv = res->dev_priv;
struct drm_vmw_size *size = &vmw_res_to_srf(res)->base_size;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdUpdateGBImage body;
} *cmd;
SVGA3dBox *box;
size_t copy_size = 0;
int i;
if (!clips)
return 0;
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd) * num_clips);
if (!cmd) {
DRM_ERROR("Couldn't reserve fifo space for proxy surface "
"update.\n");
return -ENOMEM;
}
for (i = 0; i < num_clips; ++i, clips += increment, ++cmd) {
box = &cmd->body.box;
cmd->header.id = SVGA_3D_CMD_UPDATE_GB_IMAGE;
cmd->header.size = sizeof(cmd->body);
cmd->body.image.sid = res->id;
cmd->body.image.face = 0;
cmd->body.image.mipmap = 0;
if (clips->x1 > size->width || clips->x2 > size->width ||
clips->y1 > size->height || clips->y2 > size->height) {
DRM_ERROR("Invalid clips outsize of framebuffer.\n");
return -EINVAL;
}
box->x = clips->x1;
box->y = clips->y1;
box->z = 0;
box->w = clips->x2 - clips->x1;
box->h = clips->y2 - clips->y1;
box->d = 1;
copy_size += sizeof(*cmd);
}
vmw_fifo_commit(dev_priv, copy_size);
return 0;
}
int vmw_kms_fbdev_init_data(struct vmw_private *dev_priv,
unsigned unit,
u32 max_width,
u32 max_height,
struct drm_connector **p_con,
struct drm_crtc **p_crtc,
struct drm_display_mode **p_mode)
{
struct drm_connector *con;
struct vmw_display_unit *du;
struct drm_display_mode *mode;
int i = 0;
int ret = 0;
mutex_lock(&dev_priv->dev->mode_config.mutex);
list_for_each_entry(con, &dev_priv->dev->mode_config.connector_list,
head) {
if (i == unit)
break;
++i;
}
if (i != unit) {
DRM_ERROR("Could not find initial display unit.\n");
ret = -EINVAL;
goto out_unlock;
}
if (list_empty(&con->modes))
(void) vmw_du_connector_fill_modes(con, max_width, max_height);
if (list_empty(&con->modes)) {
DRM_ERROR("Could not find initial display mode.\n");
ret = -EINVAL;
goto out_unlock;
}
du = vmw_connector_to_du(con);
*p_con = con;
*p_crtc = &du->crtc;
list_for_each_entry(mode, &con->modes, head) {
if (mode->type & DRM_MODE_TYPE_PREFERRED)
break;
}
if (mode->type & DRM_MODE_TYPE_PREFERRED)
*p_mode = mode;
else {
WARN_ONCE(true, "Could not find initial preferred mode.\n");
*p_mode = list_first_entry(&con->modes,
struct drm_display_mode,
head);
}
out_unlock:
mutex_unlock(&dev_priv->dev->mode_config.mutex);
return ret;
}
/**
* vmw_kms_create_implicit_placement_proparty - Set up the implicit placement
* property.
*
* @dev_priv: Pointer to a device private struct.
*
* Sets up the implicit placement property unless it's already set up.
*/
void
vmw_kms_create_implicit_placement_property(struct vmw_private *dev_priv)
{
if (dev_priv->implicit_placement_property)
return;
dev_priv->implicit_placement_property =
drm_property_create_range(dev_priv->dev,
DRM_MODE_PROP_IMMUTABLE,
"implicit_placement", 0, 1);
}
/**
* vmw_kms_suspend - Save modesetting state and turn modesetting off.
*
* @dev: Pointer to the drm device
* Return: 0 on success. Negative error code on failure.
*/
int vmw_kms_suspend(struct drm_device *dev)
{
struct vmw_private *dev_priv = vmw_priv(dev);
dev_priv->suspend_state = drm_atomic_helper_suspend(dev);
if (IS_ERR(dev_priv->suspend_state)) {
int ret = PTR_ERR(dev_priv->suspend_state);
DRM_ERROR("Failed kms suspend: %d\n", ret);
dev_priv->suspend_state = NULL;
return ret;
}
return 0;
}
/**
* vmw_kms_resume - Re-enable modesetting and restore state
*
* @dev: Pointer to the drm device
* Return: 0 on success. Negative error code on failure.
*
* State is resumed from a previous vmw_kms_suspend(). It's illegal
* to call this function without a previous vmw_kms_suspend().
*/
int vmw_kms_resume(struct drm_device *dev)
{
struct vmw_private *dev_priv = vmw_priv(dev);
int ret;
if (WARN_ON(!dev_priv->suspend_state))
return 0;
ret = drm_atomic_helper_resume(dev, dev_priv->suspend_state);
dev_priv->suspend_state = NULL;
return ret;
}
/**
* vmw_kms_lost_device - Notify kms that modesetting capabilities will be lost
*
* @dev: Pointer to the drm device
*/
void vmw_kms_lost_device(struct drm_device *dev)
{
drm_atomic_helper_shutdown(dev);
}
/**
* vmw_du_helper_plane_update - Helper to do plane update on a display unit.
* @update: The closure structure.
*
* Call this helper after setting callbacks in &vmw_du_update_plane to do plane
* update on display unit.
*
* Return: 0 on success or a negative error code on failure.
*/
int vmw_du_helper_plane_update(struct vmw_du_update_plane *update)
{
struct drm_plane_state *state = update->plane->state;
struct drm_plane_state *old_state = update->old_state;
struct drm_atomic_helper_damage_iter iter;
struct drm_rect clip;
struct drm_rect bb;
DECLARE_VAL_CONTEXT(val_ctx, NULL, 0);
uint32_t reserved_size = 0;
uint32_t submit_size = 0;
uint32_t curr_size = 0;
uint32_t num_hits = 0;
void *cmd_start;
char *cmd_next;
int ret;
/*
* Iterate in advance to check if really need plane update and find the
* number of clips that actually are in plane src for fifo allocation.
*/
drm_atomic_helper_damage_iter_init(&iter, old_state, state);
drm_atomic_for_each_plane_damage(&iter, &clip)
num_hits++;
if (num_hits == 0)
return 0;
if (update->vfb->bo) {
struct vmw_framebuffer_bo *vfbbo =
container_of(update->vfb, typeof(*vfbbo), base);
ret = vmw_validation_add_bo(&val_ctx, vfbbo->buffer, false,
update->cpu_blit);
} else {
struct vmw_framebuffer_surface *vfbs =
container_of(update->vfb, typeof(*vfbs), base);
ret = vmw_validation_add_resource(&val_ctx, &vfbs->surface->res,
0, NULL, NULL);
}
if (ret)
return ret;
ret = vmw_validation_prepare(&val_ctx, update->mutex, update->intr);
if (ret)
goto out_unref;
reserved_size = update->calc_fifo_size(update, num_hits);
cmd_start = vmw_fifo_reserve(update->dev_priv, reserved_size);
if (!cmd_start) {
ret = -ENOMEM;
goto out_revert;
}
cmd_next = cmd_start;
if (update->post_prepare) {
curr_size = update->post_prepare(update, cmd_next);
cmd_next += curr_size;
submit_size += curr_size;
}
if (update->pre_clip) {
curr_size = update->pre_clip(update, cmd_next, num_hits);
cmd_next += curr_size;
submit_size += curr_size;
}
bb.x1 = INT_MAX;
bb.y1 = INT_MAX;
bb.x2 = INT_MIN;
bb.y2 = INT_MIN;
drm_atomic_helper_damage_iter_init(&iter, old_state, state);
drm_atomic_for_each_plane_damage(&iter, &clip) {
uint32_t fb_x = clip.x1;
uint32_t fb_y = clip.y1;
vmw_du_translate_to_crtc(state, &clip);
if (update->clip) {
curr_size = update->clip(update, cmd_next, &clip, fb_x,
fb_y);
cmd_next += curr_size;
submit_size += curr_size;
}
bb.x1 = min_t(int, bb.x1, clip.x1);
bb.y1 = min_t(int, bb.y1, clip.y1);
bb.x2 = max_t(int, bb.x2, clip.x2);
bb.y2 = max_t(int, bb.y2, clip.y2);
}
curr_size = update->post_clip(update, cmd_next, &bb);
submit_size += curr_size;
if (reserved_size < submit_size)
submit_size = 0;
vmw_fifo_commit(update->dev_priv, submit_size);
vmw_kms_helper_validation_finish(update->dev_priv, NULL, &val_ctx,
update->out_fence, NULL);
return ret;
out_revert:
vmw_validation_revert(&val_ctx);
out_unref:
vmw_validation_unref_lists(&val_ctx);
return ret;
}
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