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android-kvm / linux / e0c38a4d1f196a4b17d2eba36afff8f656a4f1de / . / drivers / gpu / drm / vmwgfx / vmwgfx_kms.c
blob: b351fb5214d33b9b84f6223ba72a6210862e9b80 [file] [log] [blame]
// 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;
}