588 lines
14 KiB
C
588 lines
14 KiB
C
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// SPDX-License-Identifier: GPL-2.0 OR MIT
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/**************************************************************************
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*
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* Copyright 2009-2014 VMware, Inc., Palo Alto, CA., USA
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#include <drm/ttm/ttm_placement.h>
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#include "device_include/svga_overlay.h"
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#include "device_include/svga_escape.h"
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#include "vmwgfx_drv.h"
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#define VMW_MAX_NUM_STREAMS 1
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#define VMW_OVERLAY_CAP_MASK (SVGA_FIFO_CAP_VIDEO | SVGA_FIFO_CAP_ESCAPE)
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struct vmw_stream {
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struct vmw_buffer_object *buf;
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bool claimed;
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bool paused;
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struct drm_vmw_control_stream_arg saved;
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};
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/*
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* Overlay control
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*/
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struct vmw_overlay {
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/*
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* Each stream is a single overlay. In Xv these are called ports.
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*/
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struct mutex mutex;
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struct vmw_stream stream[VMW_MAX_NUM_STREAMS];
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};
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static inline struct vmw_overlay *vmw_overlay(struct drm_device *dev)
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{
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struct vmw_private *dev_priv = vmw_priv(dev);
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return dev_priv ? dev_priv->overlay_priv : NULL;
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}
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struct vmw_escape_header {
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uint32_t cmd;
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SVGAFifoCmdEscape body;
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};
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struct vmw_escape_video_flush {
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struct vmw_escape_header escape;
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SVGAEscapeVideoFlush flush;
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};
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static inline void fill_escape(struct vmw_escape_header *header,
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uint32_t size)
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{
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header->cmd = SVGA_CMD_ESCAPE;
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header->body.nsid = SVGA_ESCAPE_NSID_VMWARE;
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header->body.size = size;
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}
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static inline void fill_flush(struct vmw_escape_video_flush *cmd,
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uint32_t stream_id)
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{
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fill_escape(&cmd->escape, sizeof(cmd->flush));
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cmd->flush.cmdType = SVGA_ESCAPE_VMWARE_VIDEO_FLUSH;
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cmd->flush.streamId = stream_id;
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}
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/*
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* Send put command to hw.
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*
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* Returns
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* -ERESTARTSYS if interrupted by a signal.
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*/
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static int vmw_overlay_send_put(struct vmw_private *dev_priv,
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struct vmw_buffer_object *buf,
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struct drm_vmw_control_stream_arg *arg,
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bool interruptible)
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{
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struct vmw_escape_video_flush *flush;
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size_t fifo_size;
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bool have_so = (dev_priv->active_display_unit == vmw_du_screen_object);
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int i, num_items;
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SVGAGuestPtr ptr;
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struct {
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struct vmw_escape_header escape;
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struct {
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uint32_t cmdType;
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uint32_t streamId;
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} header;
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} *cmds;
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struct {
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uint32_t registerId;
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uint32_t value;
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} *items;
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/* defines are a index needs + 1 */
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if (have_so)
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num_items = SVGA_VIDEO_DST_SCREEN_ID + 1;
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else
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num_items = SVGA_VIDEO_PITCH_3 + 1;
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fifo_size = sizeof(*cmds) + sizeof(*flush) + sizeof(*items) * num_items;
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cmds = VMW_CMD_RESERVE(dev_priv, fifo_size);
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/* hardware has hung, can't do anything here */
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if (!cmds)
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return -ENOMEM;
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items = (typeof(items))&cmds[1];
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flush = (struct vmw_escape_video_flush *)&items[num_items];
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/* the size is header + number of items */
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fill_escape(&cmds->escape, sizeof(*items) * (num_items + 1));
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cmds->header.cmdType = SVGA_ESCAPE_VMWARE_VIDEO_SET_REGS;
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cmds->header.streamId = arg->stream_id;
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/* the IDs are neatly numbered */
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for (i = 0; i < num_items; i++)
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items[i].registerId = i;
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vmw_bo_get_guest_ptr(&buf->base, &ptr);
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ptr.offset += arg->offset;
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items[SVGA_VIDEO_ENABLED].value = true;
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items[SVGA_VIDEO_FLAGS].value = arg->flags;
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items[SVGA_VIDEO_DATA_OFFSET].value = ptr.offset;
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items[SVGA_VIDEO_FORMAT].value = arg->format;
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items[SVGA_VIDEO_COLORKEY].value = arg->color_key;
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items[SVGA_VIDEO_SIZE].value = arg->size;
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items[SVGA_VIDEO_WIDTH].value = arg->width;
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items[SVGA_VIDEO_HEIGHT].value = arg->height;
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items[SVGA_VIDEO_SRC_X].value = arg->src.x;
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items[SVGA_VIDEO_SRC_Y].value = arg->src.y;
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items[SVGA_VIDEO_SRC_WIDTH].value = arg->src.w;
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items[SVGA_VIDEO_SRC_HEIGHT].value = arg->src.h;
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items[SVGA_VIDEO_DST_X].value = arg->dst.x;
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items[SVGA_VIDEO_DST_Y].value = arg->dst.y;
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items[SVGA_VIDEO_DST_WIDTH].value = arg->dst.w;
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items[SVGA_VIDEO_DST_HEIGHT].value = arg->dst.h;
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items[SVGA_VIDEO_PITCH_1].value = arg->pitch[0];
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items[SVGA_VIDEO_PITCH_2].value = arg->pitch[1];
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items[SVGA_VIDEO_PITCH_3].value = arg->pitch[2];
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if (have_so) {
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items[SVGA_VIDEO_DATA_GMRID].value = ptr.gmrId;
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items[SVGA_VIDEO_DST_SCREEN_ID].value = SVGA_ID_INVALID;
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}
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fill_flush(flush, arg->stream_id);
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vmw_cmd_commit(dev_priv, fifo_size);
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return 0;
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}
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/*
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* Send stop command to hw.
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*
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* Returns
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* -ERESTARTSYS if interrupted by a signal.
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*/
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static int vmw_overlay_send_stop(struct vmw_private *dev_priv,
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uint32_t stream_id,
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bool interruptible)
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{
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struct {
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struct vmw_escape_header escape;
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SVGAEscapeVideoSetRegs body;
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struct vmw_escape_video_flush flush;
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} *cmds;
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int ret;
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for (;;) {
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cmds = VMW_CMD_RESERVE(dev_priv, sizeof(*cmds));
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if (cmds)
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break;
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ret = vmw_fallback_wait(dev_priv, false, true, 0,
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interruptible, 3*HZ);
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if (interruptible && ret == -ERESTARTSYS)
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return ret;
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else
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BUG_ON(ret != 0);
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}
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fill_escape(&cmds->escape, sizeof(cmds->body));
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cmds->body.header.cmdType = SVGA_ESCAPE_VMWARE_VIDEO_SET_REGS;
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cmds->body.header.streamId = stream_id;
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cmds->body.items[0].registerId = SVGA_VIDEO_ENABLED;
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cmds->body.items[0].value = false;
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fill_flush(&cmds->flush, stream_id);
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vmw_cmd_commit(dev_priv, sizeof(*cmds));
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return 0;
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}
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/*
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* Move a buffer to vram or gmr if @pin is set, else unpin the buffer.
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*
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* With the introduction of screen objects buffers could now be
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* used with GMRs instead of being locked to vram.
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*/
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static int vmw_overlay_move_buffer(struct vmw_private *dev_priv,
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struct vmw_buffer_object *buf,
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bool pin, bool inter)
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{
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if (!pin)
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return vmw_bo_unpin(dev_priv, buf, inter);
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if (dev_priv->active_display_unit == vmw_du_legacy)
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return vmw_bo_pin_in_vram(dev_priv, buf, inter);
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return vmw_bo_pin_in_vram_or_gmr(dev_priv, buf, inter);
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}
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/*
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* Stop or pause a stream.
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*
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* If the stream is paused the no evict flag is removed from the buffer
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* but left in vram. This allows for instance mode_set to evict it
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* should it need to.
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*
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* The caller must hold the overlay lock.
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*
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* @stream_id which stream to stop/pause.
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* @pause true to pause, false to stop completely.
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*/
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static int vmw_overlay_stop(struct vmw_private *dev_priv,
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uint32_t stream_id, bool pause,
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bool interruptible)
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{
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struct vmw_overlay *overlay = dev_priv->overlay_priv;
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struct vmw_stream *stream = &overlay->stream[stream_id];
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int ret;
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/* no buffer attached the stream is completely stopped */
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if (!stream->buf)
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return 0;
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/* If the stream is paused this is already done */
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if (!stream->paused) {
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ret = vmw_overlay_send_stop(dev_priv, stream_id,
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interruptible);
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if (ret)
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return ret;
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/* We just remove the NO_EVICT flag so no -ENOMEM */
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ret = vmw_overlay_move_buffer(dev_priv, stream->buf, false,
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interruptible);
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if (interruptible && ret == -ERESTARTSYS)
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return ret;
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else
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BUG_ON(ret != 0);
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}
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if (!pause) {
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vmw_bo_unreference(&stream->buf);
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stream->paused = false;
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} else {
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stream->paused = true;
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}
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return 0;
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}
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/*
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* Update a stream and send any put or stop fifo commands needed.
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*
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* The caller must hold the overlay lock.
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*
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* Returns
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* -ENOMEM if buffer doesn't fit in vram.
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* -ERESTARTSYS if interrupted.
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*/
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static int vmw_overlay_update_stream(struct vmw_private *dev_priv,
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struct vmw_buffer_object *buf,
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struct drm_vmw_control_stream_arg *arg,
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bool interruptible)
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{
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struct vmw_overlay *overlay = dev_priv->overlay_priv;
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struct vmw_stream *stream = &overlay->stream[arg->stream_id];
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int ret = 0;
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if (!buf)
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return -EINVAL;
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DRM_DEBUG(" %s: old %p, new %p, %spaused\n", __func__,
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stream->buf, buf, stream->paused ? "" : "not ");
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if (stream->buf != buf) {
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ret = vmw_overlay_stop(dev_priv, arg->stream_id,
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false, interruptible);
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if (ret)
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return ret;
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} else if (!stream->paused) {
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/* If the buffers match and not paused then just send
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* the put command, no need to do anything else.
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*/
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ret = vmw_overlay_send_put(dev_priv, buf, arg, interruptible);
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if (ret == 0)
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stream->saved = *arg;
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else
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BUG_ON(!interruptible);
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return ret;
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}
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/* We don't start the old stream if we are interrupted.
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* Might return -ENOMEM if it can't fit the buffer in vram.
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*/
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ret = vmw_overlay_move_buffer(dev_priv, buf, true, interruptible);
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if (ret)
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return ret;
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ret = vmw_overlay_send_put(dev_priv, buf, arg, interruptible);
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if (ret) {
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/* This one needs to happen no matter what. We only remove
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* the NO_EVICT flag so this is safe from -ENOMEM.
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*/
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BUG_ON(vmw_overlay_move_buffer(dev_priv, buf, false, false)
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!= 0);
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return ret;
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}
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if (stream->buf != buf)
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stream->buf = vmw_bo_reference(buf);
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stream->saved = *arg;
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/* stream is no longer stopped/paused */
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stream->paused = false;
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return 0;
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}
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/*
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* Try to resume all paused streams.
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*
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* Used by the kms code after moving a new scanout buffer to vram.
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*
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* Takes the overlay lock.
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*/
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int vmw_overlay_resume_all(struct vmw_private *dev_priv)
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{
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struct vmw_overlay *overlay = dev_priv->overlay_priv;
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int i, ret;
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if (!overlay)
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return 0;
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mutex_lock(&overlay->mutex);
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|
|
for (i = 0; i < VMW_MAX_NUM_STREAMS; i++) {
|
||
|
|
struct vmw_stream *stream = &overlay->stream[i];
|
||
|
|
if (!stream->paused)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
ret = vmw_overlay_update_stream(dev_priv, stream->buf,
|
||
|
|
&stream->saved, false);
|
||
|
|
if (ret != 0)
|
||
|
|
DRM_INFO("%s: *warning* failed to resume stream %i\n",
|
||
|
|
__func__, i);
|
||
|
|
}
|
||
|
|
|
||
|
|
mutex_unlock(&overlay->mutex);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Pauses all active streams.
|
||
|
|
*
|
||
|
|
* Used by the kms code when moving a new scanout buffer to vram.
|
||
|
|
*
|
||
|
|
* Takes the overlay lock.
|
||
|
|
*/
|
||
|
|
int vmw_overlay_pause_all(struct vmw_private *dev_priv)
|
||
|
|
{
|
||
|
|
struct vmw_overlay *overlay = dev_priv->overlay_priv;
|
||
|
|
int i, ret;
|
||
|
|
|
||
|
|
if (!overlay)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
mutex_lock(&overlay->mutex);
|
||
|
|
|
||
|
|
for (i = 0; i < VMW_MAX_NUM_STREAMS; i++) {
|
||
|
|
if (overlay->stream[i].paused)
|
||
|
|
DRM_INFO("%s: *warning* stream %i already paused\n",
|
||
|
|
__func__, i);
|
||
|
|
ret = vmw_overlay_stop(dev_priv, i, true, false);
|
||
|
|
WARN_ON(ret != 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
mutex_unlock(&overlay->mutex);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static bool vmw_overlay_available(const struct vmw_private *dev_priv)
|
||
|
|
{
|
||
|
|
return (dev_priv->overlay_priv != NULL &&
|
||
|
|
((vmw_fifo_caps(dev_priv) & VMW_OVERLAY_CAP_MASK) ==
|
||
|
|
VMW_OVERLAY_CAP_MASK));
|
||
|
|
}
|
||
|
|
|
||
|
|
int vmw_overlay_ioctl(struct drm_device *dev, void *data,
|
||
|
|
struct drm_file *file_priv)
|
||
|
|
{
|
||
|
|
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
|
||
|
|
struct vmw_private *dev_priv = vmw_priv(dev);
|
||
|
|
struct vmw_overlay *overlay = dev_priv->overlay_priv;
|
||
|
|
struct drm_vmw_control_stream_arg *arg =
|
||
|
|
(struct drm_vmw_control_stream_arg *)data;
|
||
|
|
struct vmw_buffer_object *buf;
|
||
|
|
struct vmw_resource *res;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
if (!vmw_overlay_available(dev_priv))
|
||
|
|
return -ENOSYS;
|
||
|
|
|
||
|
|
ret = vmw_user_stream_lookup(dev_priv, tfile, &arg->stream_id, &res);
|
||
|
|
if (ret)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
mutex_lock(&overlay->mutex);
|
||
|
|
|
||
|
|
if (!arg->enabled) {
|
||
|
|
ret = vmw_overlay_stop(dev_priv, arg->stream_id, false, true);
|
||
|
|
goto out_unlock;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = vmw_user_bo_lookup(file_priv, arg->handle, &buf);
|
||
|
|
if (ret)
|
||
|
|
goto out_unlock;
|
||
|
|
|
||
|
|
ret = vmw_overlay_update_stream(dev_priv, buf, arg, true);
|
||
|
|
|
||
|
|
vmw_bo_unreference(&buf);
|
||
|
|
drm_gem_object_put(&buf->base.base);
|
||
|
|
|
||
|
|
out_unlock:
|
||
|
|
mutex_unlock(&overlay->mutex);
|
||
|
|
vmw_resource_unreference(&res);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
int vmw_overlay_num_overlays(struct vmw_private *dev_priv)
|
||
|
|
{
|
||
|
|
if (!vmw_overlay_available(dev_priv))
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
return VMW_MAX_NUM_STREAMS;
|
||
|
|
}
|
||
|
|
|
||
|
|
int vmw_overlay_num_free_overlays(struct vmw_private *dev_priv)
|
||
|
|
{
|
||
|
|
struct vmw_overlay *overlay = dev_priv->overlay_priv;
|
||
|
|
int i, k;
|
||
|
|
|
||
|
|
if (!vmw_overlay_available(dev_priv))
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
mutex_lock(&overlay->mutex);
|
||
|
|
|
||
|
|
for (i = 0, k = 0; i < VMW_MAX_NUM_STREAMS; i++)
|
||
|
|
if (!overlay->stream[i].claimed)
|
||
|
|
k++;
|
||
|
|
|
||
|
|
mutex_unlock(&overlay->mutex);
|
||
|
|
|
||
|
|
return k;
|
||
|
|
}
|
||
|
|
|
||
|
|
int vmw_overlay_claim(struct vmw_private *dev_priv, uint32_t *out)
|
||
|
|
{
|
||
|
|
struct vmw_overlay *overlay = dev_priv->overlay_priv;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
if (!overlay)
|
||
|
|
return -ENOSYS;
|
||
|
|
|
||
|
|
mutex_lock(&overlay->mutex);
|
||
|
|
|
||
|
|
for (i = 0; i < VMW_MAX_NUM_STREAMS; i++) {
|
||
|
|
|
||
|
|
if (overlay->stream[i].claimed)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
overlay->stream[i].claimed = true;
|
||
|
|
*out = i;
|
||
|
|
mutex_unlock(&overlay->mutex);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
mutex_unlock(&overlay->mutex);
|
||
|
|
return -ESRCH;
|
||
|
|
}
|
||
|
|
|
||
|
|
int vmw_overlay_unref(struct vmw_private *dev_priv, uint32_t stream_id)
|
||
|
|
{
|
||
|
|
struct vmw_overlay *overlay = dev_priv->overlay_priv;
|
||
|
|
|
||
|
|
BUG_ON(stream_id >= VMW_MAX_NUM_STREAMS);
|
||
|
|
|
||
|
|
if (!overlay)
|
||
|
|
return -ENOSYS;
|
||
|
|
|
||
|
|
mutex_lock(&overlay->mutex);
|
||
|
|
|
||
|
|
WARN_ON(!overlay->stream[stream_id].claimed);
|
||
|
|
vmw_overlay_stop(dev_priv, stream_id, false, false);
|
||
|
|
overlay->stream[stream_id].claimed = false;
|
||
|
|
|
||
|
|
mutex_unlock(&overlay->mutex);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int vmw_overlay_init(struct vmw_private *dev_priv)
|
||
|
|
{
|
||
|
|
struct vmw_overlay *overlay;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
if (dev_priv->overlay_priv)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
|
||
|
|
if (!overlay)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
mutex_init(&overlay->mutex);
|
||
|
|
for (i = 0; i < VMW_MAX_NUM_STREAMS; i++) {
|
||
|
|
overlay->stream[i].buf = NULL;
|
||
|
|
overlay->stream[i].paused = false;
|
||
|
|
overlay->stream[i].claimed = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
dev_priv->overlay_priv = overlay;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int vmw_overlay_close(struct vmw_private *dev_priv)
|
||
|
|
{
|
||
|
|
struct vmw_overlay *overlay = dev_priv->overlay_priv;
|
||
|
|
bool forgotten_buffer = false;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
if (!overlay)
|
||
|
|
return -ENOSYS;
|
||
|
|
|
||
|
|
for (i = 0; i < VMW_MAX_NUM_STREAMS; i++) {
|
||
|
|
if (overlay->stream[i].buf) {
|
||
|
|
forgotten_buffer = true;
|
||
|
|
vmw_overlay_stop(dev_priv, i, false, false);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
WARN_ON(forgotten_buffer);
|
||
|
|
|
||
|
|
dev_priv->overlay_priv = NULL;
|
||
|
|
kfree(overlay);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|