/**************************************************************************
*
* Copyright © 2011 VMware, Inc., Palo Alto, CA., USA
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include "vmwgfx_kms.h"
#define vmw_crtc_to_sou(x) \
container_of(x, struct vmw_screen_object_unit, base.crtc)
#define vmw_encoder_to_sou(x) \
container_of(x, struct vmw_screen_object_unit, base.encoder)
#define vmw_connector_to_sou(x) \
container_of(x, struct vmw_screen_object_unit, base.connector)
struct vmw_screen_object_display {
unsigned num_implicit;
struct vmw_framebuffer *implicit_fb;
};
/**
* Display unit using screen objects.
*/
struct vmw_screen_object_unit {
struct vmw_display_unit base;
unsigned long buffer_size; /**< Size of allocated buffer */
struct vmw_dma_buffer *buffer; /**< Backing store buffer */
bool defined;
bool active_implicit;
};
static void vmw_sou_destroy(struct vmw_screen_object_unit *sou)
{
// vmw_display_unit_cleanup(&sou->base);
kfree(sou);
}
/*
* Screen Object Display Unit CRTC functions
*/
static void vmw_sou_crtc_destroy(struct drm_crtc *crtc)
{
vmw_sou_destroy(vmw_crtc_to_sou(crtc));
}
static void vmw_sou_del_active(struct vmw_private *vmw_priv,
struct vmw_screen_object_unit *sou)
{
struct vmw_screen_object_display *ld = vmw_priv->sou_priv;
if (sou->active_implicit) {
if (--(ld->num_implicit) == 0)
ld->implicit_fb = NULL;
sou->active_implicit = false;
}
}
static void vmw_sou_add_active(struct vmw_private *vmw_priv,
struct vmw_screen_object_unit *sou,
struct vmw_framebuffer *vfb)
{
struct vmw_screen_object_display *ld = vmw_priv->sou_priv;
BUG_ON(!ld->num_implicit && ld->implicit_fb);
if (!sou->active_implicit && sou->base.is_implicit) {
ld->implicit_fb = vfb;
sou->active_implicit = true;
ld->num_implicit++;
}
}
/**
* Send the fifo command to create a screen.
*/
static int vmw_sou_fifo_create(struct vmw_private *dev_priv,
struct vmw_screen_object_unit *sou,
uint32_t x, uint32_t y,
struct drm_display_mode *mode)
{
size_t fifo_size;
struct {
struct {
uint32_t cmdType;
} header;
SVGAScreenObject obj;
} *cmd;
BUG_ON(!sou->buffer);
fifo_size = sizeof(*cmd);
cmd = vmw_fifo_reserve(dev_priv, fifo_size);
/* The hardware has hung, nothing we can do about it here. */
if (unlikely(cmd == NULL)) {
DRM_ERROR("Fifo reserve failed.\n");
return -ENOMEM;
}
cmd->header.cmdType = SVGA_CMD_DEFINE_SCREEN;
cmd->obj.structSize = sizeof(SVGAScreenObject);
cmd->obj.id = sou->base.unit;
cmd->obj.flags = SVGA_SCREEN_HAS_ROOT |
(sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0);
cmd->obj.size.width = mode->hdisplay;
cmd->obj.size.height = mode->vdisplay;
if (sou->base.is_implicit) {
cmd->obj.root.x = x;
cmd->obj.root.y = y;
} else {
cmd->obj.root.x = sou->base.gui_x;
cmd->obj.root.y = sou->base.gui_y;
}
/* Ok to assume that buffer is pinned in vram */
vmw_bo_get_guest_ptr(&sou->buffer->base, &cmd->obj.backingStore.ptr);
cmd->obj.backingStore.pitch = mode->hdisplay * 4;
vmw_fifo_commit(dev_priv, fifo_size);
sou->defined = true;
return 0;
}
/**
* Send the fifo command to destroy a screen.
*/
static int vmw_sou_fifo_destroy(struct vmw_private *dev_priv,
struct vmw_screen_object_unit *sou)
{
size_t fifo_size;
int ret;
struct {
struct {
uint32_t cmdType;
} header;
SVGAFifoCmdDestroyScreen body;
} *cmd;
/* no need to do anything */
if (unlikely(!sou->defined))
return 0;
fifo_size = sizeof(*cmd);
cmd = vmw_fifo_reserve(dev_priv, fifo_size);
/* the hardware has hung, nothing we can do about it here */
if (unlikely(cmd == NULL)) {
DRM_ERROR("Fifo reserve failed.\n");
return -ENOMEM;
}
cmd->header.cmdType = SVGA_CMD_DESTROY_SCREEN;
cmd->body.screenId = sou->base.unit;
vmw_fifo_commit(dev_priv, fifo_size);
/* Force sync */
ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ);
if (unlikely(ret != 0))
DRM_ERROR("Failed to sync with HW");
else
sou->defined = false;
return ret;
}
/**
* Free the backing store.
*/
static void vmw_sou_backing_free(struct vmw_private *dev_priv,
struct vmw_screen_object_unit *sou)
{
struct ttm_buffer_object *bo;
if (unlikely(sou->buffer == NULL))
return;
bo = &sou->buffer->base;
ttm_bo_unref(&bo);
sou->buffer = NULL;
sou->buffer_size = 0;
}
/**
* Allocate the backing store for the buffer.
*/
static int vmw_sou_backing_alloc(struct vmw_private *dev_priv,
struct vmw_screen_object_unit *sou,
unsigned long size)
{
int ret;
if (sou->buffer_size == size)
return 0;
if (sou->buffer)
vmw_sou_backing_free(dev_priv, sou);
sou->buffer = kzalloc(sizeof(*sou->buffer), GFP_KERNEL);
if (unlikely(sou->buffer == NULL))
return -ENOMEM;
/* After we have alloced the backing store might not be able to
* resume the overlays, this is preferred to failing to alloc.
*/
// vmw_overlay_pause_all(dev_priv);
ret = vmw_dmabuf_init(dev_priv, sou->buffer, size,
&vmw_vram_ne_placement,
false, &vmw_dmabuf_bo_free);
// vmw_overlay_resume_all(dev_priv);
if (unlikely(ret != 0))
sou->buffer = NULL; /* vmw_dmabuf_init frees on error */
else
sou->buffer_size = size;
return ret;
}
static int vmw_sou_crtc_set_config(struct drm_mode_set *set)
{
struct vmw_private *dev_priv;
struct vmw_screen_object_unit *sou;
struct drm_connector *connector;
struct drm_display_mode *mode;
struct drm_encoder *encoder;
struct vmw_framebuffer *vfb;
struct drm_framebuffer *fb;
struct drm_crtc *crtc;
int ret = 0;
if (!set)
return -EINVAL;
if (!set->crtc)
return -EINVAL;
/* get the sou */
crtc = set->crtc;
sou = vmw_crtc_to_sou(crtc);
vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
dev_priv = vmw_priv(crtc->dev);
if (set->num_connectors > 1) {
DRM_ERROR("to many connectors\n");
return -EINVAL;
}
if (set->num_connectors == 1 &&
set->connectors[0] != &sou->base.connector) {
DRM_ERROR("connector doesn't match %p %p\n",
set->connectors[0], &sou->base.connector);
return -EINVAL;
}
/* sou only supports one fb active at the time */
if (sou->base.is_implicit &&
dev_priv->sou_priv->implicit_fb && vfb &&
!(dev_priv->sou_priv->num_implicit == 1 &&
sou->active_implicit) &&
dev_priv->sou_priv->implicit_fb != vfb) {
DRM_ERROR("Multiple framebuffers not supported\n");
return -EINVAL;
}
/* since they always map one to one these are safe */
connector = &sou->base.connector;
encoder = &sou->base.encoder;
/* should we turn the crtc off */
if (set->num_connectors == 0 || !set->mode || !set->fb) {
ret = vmw_sou_fifo_destroy(dev_priv, sou);
/* the hardware has hung don't do anything more */
if (unlikely(ret != 0))
return ret;
connector->encoder = NULL;
encoder->crtc = NULL;
crtc->fb = NULL;
crtc->x = 0;
crtc->y = 0;
vmw_sou_del_active(dev_priv, sou);
vmw_sou_backing_free(dev_priv, sou);
return 0;
}
/* we now know we want to set a mode */
mode = set->mode;
fb = set->fb;
if (set->x + mode->hdisplay > fb->width ||
set->y + mode->vdisplay > fb->height) {
DRM_ERROR("set outside of framebuffer\n");
return -EINVAL;
}
// vmw_fb_off(dev_priv);
if (mode->hdisplay != crtc->mode.hdisplay ||
mode->vdisplay != crtc->mode.vdisplay) {
/* no need to check if depth is different, because backing
* store depth is forced to 4 by the device.
*/
ret = vmw_sou_fifo_destroy(dev_priv, sou);
/* the hardware has hung don't do anything more */
if (unlikely(ret != 0))
return ret;
vmw_sou_backing_free(dev_priv, sou);
}
if (!sou->buffer) {
/* forced to depth 4 by the device */
size_t size = mode->hdisplay * mode->vdisplay * 4;
ret = vmw_sou_backing_alloc(dev_priv, sou, size);
if (unlikely(ret != 0))
return ret;
}
ret = vmw_sou_fifo_create(dev_priv, sou, set->x, set->y, mode);
if (unlikely(ret != 0)) {
/*
* We are in a bit of a situation here, the hardware has
* hung and we may or may not have a buffer hanging of
* the screen object, best thing to do is not do anything
* if we where defined, if not just turn the crtc of.
* Not what userspace wants but it needs to htfu.
*/
if (sou->defined)
return ret;
connector->encoder = NULL;
encoder->crtc = NULL;
crtc->fb = NULL;
crtc->x = 0;
crtc->y = 0;
return ret;
}
vmw_sou_add_active(dev_priv, sou, vfb);
connector->encoder = encoder;
encoder->crtc = crtc;
crtc->mode = *mode;
crtc->fb = fb;
crtc->x = set->x;
crtc->y = set->y;
return 0;
}
static struct drm_crtc_funcs vmw_screen_object_crtc_funcs = {
.save = vmw_du_crtc_save,
.restore = vmw_du_crtc_restore,
// .cursor_set = vmw_du_crtc_cursor_set,
// .cursor_move = vmw_du_crtc_cursor_move,
.gamma_set = vmw_du_crtc_gamma_set,
.destroy = vmw_sou_crtc_destroy,
.set_config = vmw_sou_crtc_set_config,
// .page_flip = vmw_du_page_flip,
};
/*
* Screen Object Display Unit encoder functions
*/
static void vmw_sou_encoder_destroy(struct drm_encoder *encoder)
{
vmw_sou_destroy(vmw_encoder_to_sou(encoder));
}
static struct drm_encoder_funcs vmw_screen_object_encoder_funcs = {
.destroy = vmw_sou_encoder_destroy,
};
/*
* Screen Object Display Unit connector functions
*/
static void vmw_sou_connector_destroy(struct drm_connector *connector)
{
vmw_sou_destroy(vmw_connector_to_sou(connector));
}
static struct drm_connector_funcs vmw_legacy_connector_funcs = {
.dpms = vmw_du_connector_dpms,
.save = vmw_du_connector_save,
.restore = vmw_du_connector_restore,
.detect = vmw_du_connector_detect,
.fill_modes = vmw_du_connector_fill_modes,
.set_property = vmw_du_connector_set_property,
.destroy = vmw_sou_connector_destroy,
};
static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit)
{
struct vmw_screen_object_unit *sou;
struct drm_device *dev = dev_priv->dev;
struct drm_connector *connector;
struct drm_encoder *encoder;
struct drm_crtc *crtc;
sou = kzalloc(sizeof(*sou), GFP_KERNEL);
if (!sou)
return -ENOMEM;
sou->base.unit = unit;
crtc = &sou->base.crtc;
encoder = &sou->base.encoder;
connector = &sou->base.connector;
sou->active_implicit = false;
sou->base.pref_active = (unit == 0);
sou->base.pref_width = dev_priv->initial_width;
sou->base.pref_height = dev_priv->initial_height;
sou->base.pref_mode = NULL;
sou->base.is_implicit = true;
drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
DRM_MODE_CONNECTOR_VIRTUAL);
connector->status = vmw_du_connector_detect(connector, true);
drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs,
DRM_MODE_ENCODER_VIRTUAL);
drm_mode_connector_attach_encoder(connector, encoder);
encoder->possible_crtcs = (1 << unit);
encoder->possible_clones = 0;
drm_crtc_init(dev, crtc, &vmw_screen_object_crtc_funcs);
drm_mode_crtc_set_gamma_size(crtc, 256);
drm_object_attach_property(&connector->base,
dev->mode_config.dirty_info_property,
1);
return 0;
}
int vmw_kms_init_screen_object_display(struct vmw_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
int i, ret;
ENTER();
if (dev_priv->sou_priv) {
DRM_INFO("sou system already on\n");
return -EINVAL;
}
if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) {
DRM_INFO("Not using screen objects,"
" missing cap SCREEN_OBJECT_2\n");
return -ENOSYS;
}
ret = -ENOMEM;
dev_priv->sou_priv = kmalloc(sizeof(*dev_priv->sou_priv), GFP_KERNEL);
if (unlikely(!dev_priv->sou_priv))
goto err_no_mem;
dev_priv->sou_priv->num_implicit = 0;
dev_priv->sou_priv->implicit_fb = NULL;
// ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
// if (unlikely(ret != 0))
// goto err_free;
ret = drm_mode_create_dirty_info_property(dev);
if (unlikely(ret != 0))
goto err_vblank_cleanup;
for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
vmw_sou_init(dev_priv, i);
DRM_INFO("Screen objects system initialized\n");
LEAVE();
return 0;
err_vblank_cleanup:
// drm_vblank_cleanup(dev);
err_free:
kfree(dev_priv->sou_priv);
dev_priv->sou_priv = NULL;
err_no_mem:
return ret;
}
int vmw_kms_close_screen_object_display(struct vmw_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
if (!dev_priv->sou_priv)
return -ENOSYS;
// drm_vblank_cleanup(dev);
kfree(dev_priv->sou_priv);
return 0;
}
/**
* Returns if this unit can be page flipped.
* Must be called with the mode_config mutex held.
*/
bool vmw_kms_screen_object_flippable(struct vmw_private *dev_priv,
struct drm_crtc *crtc)
{
struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc);
if (!sou->base.is_implicit)
return true;
if (dev_priv->sou_priv->num_implicit != 1)
return false;
return true;
}
/**
* Update the implicit fb to the current fb of this crtc.
* Must be called with the mode_config mutex held.
*/
void vmw_kms_screen_object_update_implicit_fb(struct vmw_private *dev_priv,
struct drm_crtc *crtc)
{
struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc);
BUG_ON(!sou->base.is_implicit);
dev_priv->sou_priv->implicit_fb =
vmw_framebuffer_to_vfb(sou->base.crtc.fb);
}