kernel_samsung_a34x-permissive/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c

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// SPDX-License-Identifier: GPL-2.0 OR MIT
/**************************************************************************
*
* Copyright 2009-2015 VMware, Inc., Palo Alto, CA., USA
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include "vmwgfx_kms.h"
#include <drm/drm_plane_helper.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#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 drm_framebuffer *fb = NULL;
struct drm_crtc *crtc = NULL;
int i;
/* 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);
}
if (crtc == NULL)
return 0;
fb = crtc->primary->state->fb;
return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0],
fb->format->cpp[0] * 8,
fb->format->depth);
}
if (!list_empty(&lds->active)) {
entry = list_entry(lds->active.next, typeof(*entry), active);
fb = entry->base.crtc.primary->state->fb;
vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0],
fb->format->cpp[0] * 8, fb->format->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;
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);
vmw_svga_enable(vmw_priv);
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;
}
/**
* vmw_ldu_crtc_mode_set_nofb - Enable svga
*
* @crtc: CRTC associated with the new screen
*
* For LDU, just enable the svga
*/
static void vmw_ldu_crtc_mode_set_nofb(struct drm_crtc *crtc)
{
}
/**
* vmw_ldu_crtc_atomic_enable - Noop
*
* @crtc: CRTC associated with the new screen
*
* This is called after a mode set has been completed. Here's
* usually a good place to call vmw_ldu_add_active/vmw_ldu_del_active
* but since for LDU the display plane is closely tied to the
* CRTC, it makes more sense to do those at plane update time.
*/
static void vmw_ldu_crtc_atomic_enable(struct drm_crtc *crtc,
struct drm_crtc_state *old_state)
{
}
/**
* vmw_ldu_crtc_atomic_disable - Turns off CRTC
*
* @crtc: CRTC to be turned off
*/
static void vmw_ldu_crtc_atomic_disable(struct drm_crtc *crtc,
struct drm_crtc_state *old_state)
{
}
static const struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
.gamma_set = vmw_du_crtc_gamma_set,
.destroy = vmw_ldu_crtc_destroy,
.reset = vmw_du_crtc_reset,
.atomic_duplicate_state = vmw_du_crtc_duplicate_state,
.atomic_destroy_state = vmw_du_crtc_destroy_state,
.set_config = vmw_kms_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 const 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 const struct drm_connector_funcs vmw_legacy_connector_funcs = {
.dpms = vmw_du_connector_dpms,
.detect = vmw_du_connector_detect,
.fill_modes = vmw_du_connector_fill_modes,
.set_property = vmw_du_connector_set_property,
.destroy = vmw_ldu_connector_destroy,
.reset = vmw_du_connector_reset,
.atomic_duplicate_state = vmw_du_connector_duplicate_state,
.atomic_destroy_state = vmw_du_connector_destroy_state,
.atomic_set_property = vmw_du_connector_atomic_set_property,
.atomic_get_property = vmw_du_connector_atomic_get_property,
};
static const struct
drm_connector_helper_funcs vmw_ldu_connector_helper_funcs = {
.best_encoder = drm_atomic_helper_best_encoder,
};
/*
* Legacy Display Plane Functions
*/
static void
vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct vmw_private *dev_priv;
struct vmw_legacy_display_unit *ldu;
struct vmw_framebuffer *vfb;
struct drm_framebuffer *fb;
struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc;
ldu = vmw_crtc_to_ldu(crtc);
dev_priv = vmw_priv(plane->dev);
fb = plane->state->fb;
vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
if (vfb)
vmw_ldu_add_active(dev_priv, ldu, vfb);
else
vmw_ldu_del_active(dev_priv, ldu);
vmw_ldu_commit_list(dev_priv);
}
static const struct drm_plane_funcs vmw_ldu_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = vmw_du_primary_plane_destroy,
.reset = vmw_du_plane_reset,
.atomic_duplicate_state = vmw_du_plane_duplicate_state,
.atomic_destroy_state = vmw_du_plane_destroy_state,
};
static const struct drm_plane_funcs vmw_ldu_cursor_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = vmw_du_cursor_plane_destroy,
.reset = vmw_du_plane_reset,
.atomic_duplicate_state = vmw_du_plane_duplicate_state,
.atomic_destroy_state = vmw_du_plane_destroy_state,
};
/*
* Atomic Helpers
*/
static const struct
drm_plane_helper_funcs vmw_ldu_cursor_plane_helper_funcs = {
.atomic_check = vmw_du_cursor_plane_atomic_check,
.atomic_update = vmw_du_cursor_plane_atomic_update,
.prepare_fb = vmw_du_cursor_plane_prepare_fb,
.cleanup_fb = vmw_du_plane_cleanup_fb,
};
static const struct
drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = {
.atomic_check = vmw_du_primary_plane_atomic_check,
.atomic_update = vmw_ldu_primary_plane_atomic_update,
};
static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = {
.mode_set_nofb = vmw_ldu_crtc_mode_set_nofb,
.atomic_check = vmw_du_crtc_atomic_check,
.atomic_begin = vmw_du_crtc_atomic_begin,
.atomic_flush = vmw_du_crtc_atomic_flush,
.atomic_enable = vmw_ldu_crtc_atomic_enable,
.atomic_disable = vmw_ldu_crtc_atomic_disable,
};
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_plane *primary, *cursor;
struct drm_crtc *crtc;
int ret;
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;
primary = &ldu->base.primary;
cursor = &ldu->base.cursor;
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;
/*
* Remove this after enabling atomic because property values can
* only exist in a state object
*/
ldu->base.is_implicit = true;
/* Initialize primary plane */
vmw_du_plane_reset(primary);
ret = drm_universal_plane_init(dev, &ldu->base.primary,
0, &vmw_ldu_plane_funcs,
vmw_primary_plane_formats,
ARRAY_SIZE(vmw_primary_plane_formats),
NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
if (ret) {
DRM_ERROR("Failed to initialize primary plane");
goto err_free;
}
drm_plane_helper_add(primary, &vmw_ldu_primary_plane_helper_funcs);
/* Initialize cursor plane */
vmw_du_plane_reset(cursor);
ret = drm_universal_plane_init(dev, &ldu->base.cursor,
0, &vmw_ldu_cursor_funcs,
vmw_cursor_plane_formats,
ARRAY_SIZE(vmw_cursor_plane_formats),
NULL, DRM_PLANE_TYPE_CURSOR, NULL);
if (ret) {
DRM_ERROR("Failed to initialize cursor plane");
drm_plane_cleanup(&ldu->base.primary);
goto err_free;
}
drm_plane_helper_add(cursor, &vmw_ldu_cursor_plane_helper_funcs);
vmw_du_connector_reset(connector);
ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
DRM_MODE_CONNECTOR_VIRTUAL);
if (ret) {
DRM_ERROR("Failed to initialize connector\n");
goto err_free;
}
drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs);
connector->status = vmw_du_connector_detect(connector, true);
vmw_connector_state_to_vcs(connector->state)->is_implicit = true;
ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
DRM_MODE_ENCODER_VIRTUAL, NULL);
if (ret) {
DRM_ERROR("Failed to initialize encoder\n");
goto err_free_connector;
}
(void) drm_connector_attach_encoder(connector, encoder);
encoder->possible_crtcs = (1 << unit);
encoder->possible_clones = 0;
ret = drm_connector_register(connector);
if (ret) {
DRM_ERROR("Failed to register connector\n");
goto err_free_encoder;
}
vmw_du_crtc_reset(crtc);
ret = drm_crtc_init_with_planes(dev, crtc, &ldu->base.primary,
&ldu->base.cursor,
&vmw_legacy_crtc_funcs, NULL);
if (ret) {
DRM_ERROR("Failed to initialize CRTC\n");
goto err_free_unregister;
}
drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs);
drm_mode_crtc_set_gamma_size(crtc, 256);
drm_object_attach_property(&connector->base,
dev_priv->hotplug_mode_update_property, 1);
drm_object_attach_property(&connector->base,
dev->mode_config.suggested_x_property, 0);
drm_object_attach_property(&connector->base,
dev->mode_config.suggested_y_property, 0);
if (dev_priv->implicit_placement_property)
drm_object_attach_property
(&connector->base,
dev_priv->implicit_placement_property,
1);
return 0;
err_free_unregister:
drm_connector_unregister(connector);
err_free_encoder:
drm_encoder_cleanup(encoder);
err_free_connector:
drm_connector_cleanup(connector);
err_free:
kfree(ldu);
return ret;
}
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;
vmw_kms_create_implicit_placement_property(dev_priv, true);
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_free:
kfree(dev_priv->ldu_priv);
dev_priv->ldu_priv = NULL;
return ret;
}
int vmw_kms_ldu_close_display(struct vmw_private *dev_priv)
{
if (!dev_priv->ldu_priv)
return -ENOSYS;
BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
kfree(dev_priv->ldu_priv);
return 0;
}
int vmw_kms_ldu_do_bo_dirty(struct vmw_private *dev_priv,
struct vmw_framebuffer *framebuffer,
unsigned int flags, unsigned int color,
struct drm_clip_rect *clips,
unsigned int 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;
}
memset(cmd, 0, fifo_size);
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;
}