/**************************************************************************
*
* Copyright © 2009-2015 VMware, Inc., Palo Alto, CA., USA
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include "vmwgfx_kms.h"
#include <drm/drm_plane_helper.h>
#define vmw_crtc_to_ldu(x) \
container_of(x, struct vmw_legacy_display_unit, base.crtc)
#define vmw_encoder_to_ldu(x) \
container_of(x, struct vmw_legacy_display_unit, base.encoder)
#define vmw_connector_to_ldu(x) \
container_of(x, struct vmw_legacy_display_unit, base.connector)
struct vmw_legacy_display {
struct list_head active;
unsigned num_active;
unsigned last_num_active;
struct vmw_framebuffer *fb;
};
/**
* Display unit using the legacy register interface.
*/
struct vmw_legacy_display_unit {
struct vmw_display_unit base;
struct list_head active;
};
static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
{
list_del_init(&ldu->active);
vmw_du_cleanup(&ldu->base);
kfree(ldu);
}
/*
* Legacy Display Unit CRTC functions
*/
static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
{
vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
}
static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
{
struct vmw_legacy_display *lds = dev_priv->ldu_priv;
struct vmw_legacy_display_unit *entry;
struct vmw_display_unit *du = NULL;
struct drm_framebuffer *fb = NULL;
struct drm_crtc *crtc = NULL;
int i = 0, ret;
/* If there is no display topology the host just assumes
* that the guest will set the same layout as the host.
*/
if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
int w = 0, h = 0;
list_for_each_entry(entry, &lds->active, active) {
crtc = &entry->base.crtc;
w = max(w, crtc->x + crtc->mode.hdisplay);
h = max(h, crtc->y + crtc->mode.vdisplay);
i++;
}
if (crtc == NULL)
return 0;
fb = entry->base.crtc.primary->fb;
return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0],
fb->bits_per_pixel, fb->depth);
}
if (!list_empty(&lds->active)) {
entry = list_entry(lds->active.next, typeof(*entry), active);
fb = entry->base.crtc.primary->fb;
vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0],
fb->bits_per_pixel, fb->depth);
}
/* Make sure we always show something. */
vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS,
lds->num_active ? lds->num_active : 1);
i = 0;
list_for_each_entry(entry, &lds->active, active) {
crtc = &entry->base.crtc;
vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
i++;
}
BUG_ON(i != lds->num_active);
lds->last_num_active = lds->num_active;
/* Find the first du with a cursor. */
list_for_each_entry(entry, &lds->active, active) {
du = &entry->base;
if (!du->cursor_dmabuf)
continue;
// ret = vmw_cursor_update_dmabuf(dev_priv,
// du->cursor_dmabuf,
// 64, 64,
// du->hotspot_x,
// du->hotspot_y);
// if (ret == 0)
// break;
DRM_ERROR("Could not update cursor image\n");
}
return 0;
}
static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
struct vmw_legacy_display_unit *ldu)
{
struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
if (list_empty(&ldu->active))
return 0;
/* Must init otherwise list_empty(&ldu->active) will not work. */
list_del_init(&ldu->active);
if (--(ld->num_active) == 0) {
BUG_ON(!ld->fb);
if (ld->fb->unpin)
ld->fb->unpin(ld->fb);
ld->fb = NULL;
}
return 0;
}
static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
struct vmw_legacy_display_unit *ldu,
struct vmw_framebuffer *vfb)
{
struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
struct vmw_legacy_display_unit *entry;
struct list_head *at;
BUG_ON(!ld->num_active && ld->fb);
if (vfb != ld->fb) {
if (ld->fb && ld->fb->unpin)
ld->fb->unpin(ld->fb);
if (vfb->pin)
vfb->pin(vfb);
ld->fb = vfb;
}
if (!list_empty(&ldu->active))
return 0;
at = &ld->active;
list_for_each_entry(entry, &ld->active, active) {
if (entry->base.unit > ldu->base.unit)
break;
at = &entry->active;
}
list_add(&ldu->active, at);
ld->num_active++;
return 0;
}
static int vmw_ldu_crtc_set_config(struct drm_mode_set *set)
{
struct vmw_private *dev_priv;
struct vmw_legacy_display_unit *ldu;
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;
if (!set)
return -EINVAL;
if (!set->crtc)
return -EINVAL;
/* get the ldu */
crtc = set->crtc;
ldu = vmw_crtc_to_ldu(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] != &ldu->base.connector) {
DRM_ERROR("connector doesn't match %p %p\n",
set->connectors[0], &ldu->base.connector);
return -EINVAL;
}
/* ldu only supports one fb active at the time */
if (dev_priv->ldu_priv->fb && vfb &&
!(dev_priv->ldu_priv->num_active == 1 &&
!list_empty(&ldu->active)) &&
dev_priv->ldu_priv->fb != vfb) {
DRM_ERROR("Multiple framebuffers not supported\n");
return -EINVAL;
}
/* since they always map one to one these are safe */
connector = &ldu->base.connector;
encoder = &ldu->base.encoder;
/* should we turn the crtc off? */
if (set->num_connectors == 0 || !set->mode || !set->fb) {
connector->encoder = NULL;
encoder->crtc = NULL;
crtc->primary->fb = NULL;
crtc->enabled = false;
vmw_ldu_del_active(dev_priv, ldu);
return vmw_ldu_commit_list(dev_priv);
}
/* 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_svga_enable(dev_priv);
crtc->primary->fb = fb;
encoder->crtc = crtc;
connector->encoder = encoder;
crtc->x = set->x;
crtc->y = set->y;
crtc->mode = *mode;
crtc->enabled = true;
vmw_ldu_add_active(dev_priv, ldu, vfb);
return vmw_ldu_commit_list(dev_priv);
}
static struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
.save = vmw_du_crtc_save,
.restore = vmw_du_crtc_restore,
// .cursor_set2 = vmw_du_crtc_cursor_set2,
// .cursor_move = vmw_du_crtc_cursor_move,
.gamma_set = vmw_du_crtc_gamma_set,
.destroy = vmw_ldu_crtc_destroy,
.set_config = vmw_ldu_crtc_set_config,
};
/*
* Legacy Display Unit encoder functions
*/
static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
{
vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
}
static struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
.destroy = vmw_ldu_encoder_destroy,
};
/*
* Legacy Display Unit connector functions
*/
static void vmw_ldu_connector_destroy(struct drm_connector *connector)
{
vmw_ldu_destroy(vmw_connector_to_ldu(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_ldu_connector_destroy,
};
static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
{
struct vmw_legacy_display_unit *ldu;
struct drm_device *dev = dev_priv->dev;
struct drm_connector *connector;
struct drm_encoder *encoder;
struct drm_crtc *crtc;
ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
if (!ldu)
return -ENOMEM;
ldu->base.unit = unit;
crtc = &ldu->base.crtc;
encoder = &ldu->base.encoder;
connector = &ldu->base.connector;
INIT_LIST_HEAD(&ldu->active);
ldu->base.pref_active = (unit == 0);
ldu->base.pref_width = dev_priv->initial_width;
ldu->base.pref_height = dev_priv->initial_height;
ldu->base.pref_mode = NULL;
ldu->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_legacy_encoder_funcs,
DRM_MODE_ENCODER_VIRTUAL);
drm_mode_connector_attach_encoder(connector, encoder);
encoder->possible_crtcs = (1 << unit);
encoder->possible_clones = 0;
(void) drm_connector_register(connector);
drm_crtc_init(dev, crtc, &vmw_legacy_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_ldu_init_display(struct vmw_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
int i, ret;
if (dev_priv->ldu_priv) {
DRM_INFO("ldu system already on\n");
return -EINVAL;
}
dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL);
if (!dev_priv->ldu_priv)
return -ENOMEM;
INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
dev_priv->ldu_priv->num_active = 0;
dev_priv->ldu_priv->last_num_active = 0;
dev_priv->ldu_priv->fb = NULL;
/* for old hardware without multimon only enable one display */
if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
else
ret = drm_vblank_init(dev, 1);
if (ret != 0)
goto err_free;
ret = drm_mode_create_dirty_info_property(dev);
if (ret != 0)
goto err_vblank_cleanup;
if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
vmw_ldu_init(dev_priv, i);
else
vmw_ldu_init(dev_priv, 0);
dev_priv->active_display_unit = vmw_du_legacy;
DRM_INFO("Legacy Display Unit initialized\n");
return 0;
err_vblank_cleanup:
drm_vblank_cleanup(dev);
err_free:
kfree(dev_priv->ldu_priv);
dev_priv->ldu_priv = NULL;
return ret;
}
int vmw_kms_ldu_close_display(struct vmw_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
if (!dev_priv->ldu_priv)
return -ENOSYS;
drm_vblank_cleanup(dev);
BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
kfree(dev_priv->ldu_priv);
return 0;
}
int vmw_kms_ldu_do_dmabuf_dirty(struct vmw_private *dev_priv,
struct vmw_framebuffer *framebuffer,
unsigned flags, unsigned color,
struct drm_clip_rect *clips,
unsigned num_clips, int increment)
{
size_t fifo_size;
int i;
struct {
uint32_t header;
SVGAFifoCmdUpdate body;
} *cmd;
fifo_size = sizeof(*cmd) * num_clips;
cmd = vmw_fifo_reserve(dev_priv, fifo_size);
if (unlikely(cmd == NULL)) {
DRM_ERROR("Fifo reserve failed.\n");
return -ENOMEM;
}
for (i = 0; i < num_clips; i++, clips += increment) {
cmd[i].header = SVGA_CMD_UPDATE;
cmd[i].body.x = clips->x1;
cmd[i].body.y = clips->y1;
cmd[i].body.width = clips->x2 - clips->x1;
cmd[i].body.height = clips->y2 - clips->y1;
}
vmw_fifo_commit(dev_priv, fifo_size);
return 0;
}