sync code with last improvements from OpenBSD
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88965415ff
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26235 changed files with 29195616 additions and 0 deletions
367
driver/xf86-video-amdgpu/src/amdgpu_drm_queue.c
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367
driver/xf86-video-amdgpu/src/amdgpu_drm_queue.c
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/*
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* Copyright © 2007 Red Hat, Inc.
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* Copyright © 2015 Advanced Micro Devices, Inc.
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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 "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* 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 NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Authors:
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* Dave Airlie <airlied@redhat.com>
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <errno.h>
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#include <xorg-server.h>
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#include <X11/Xdefs.h>
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#include <list.h>
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#include "amdgpu_drv.h"
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#include "amdgpu_drm_queue.h"
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struct amdgpu_drm_queue_entry {
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struct xorg_list list;
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uint64_t usec;
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uint64_t id;
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uintptr_t seq;
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void *data;
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ClientPtr client;
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xf86CrtcPtr crtc;
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amdgpu_drm_handler_proc handler;
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amdgpu_drm_abort_proc abort;
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Bool is_flip;
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unsigned int frame;
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};
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static int amdgpu_drm_queue_refcnt;
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static struct xorg_list amdgpu_drm_queue;
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static struct xorg_list amdgpu_drm_flip_signalled;
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static struct xorg_list amdgpu_drm_vblank_signalled;
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static struct xorg_list amdgpu_drm_vblank_deferred;
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static uintptr_t amdgpu_drm_queue_seq;
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/*
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* Process a DRM event
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*/
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static void
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amdgpu_drm_queue_handle_one(struct amdgpu_drm_queue_entry *e)
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{
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xorg_list_del(&e->list);
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if (e->handler) {
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e->handler(e->crtc, e->frame, e->usec, e->data);
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} else
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e->abort(e->crtc, e->data);
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free(e);
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}
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/*
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* Abort one queued DRM entry, removing it
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* from the list, calling the abort function and
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* freeing the memory
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*/
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static void
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amdgpu_drm_abort_one(struct amdgpu_drm_queue_entry *e)
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{
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xorg_list_del(&e->list);
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e->abort(e->crtc, e->data);
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free(e);
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}
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static void
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amdgpu_drm_queue_handler(int fd, unsigned int frame, unsigned int sec,
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unsigned int usec, void *user_ptr)
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{
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uintptr_t seq = (uintptr_t)user_ptr;
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struct amdgpu_drm_queue_entry *e, *tmp;
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xorg_list_for_each_entry_safe(e, tmp, &amdgpu_drm_queue, list) {
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if (e->seq == seq) {
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if (!e->handler) {
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amdgpu_drm_abort_one(e);
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break;
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}
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xorg_list_del(&e->list);
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e->usec = (uint64_t)sec * 1000000 + usec;
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e->frame = frame;
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xorg_list_append(&e->list, e->is_flip ?
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&amdgpu_drm_flip_signalled :
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&amdgpu_drm_vblank_signalled);
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break;
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}
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}
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}
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/*
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* Handle signalled vblank events. If we're waiting for a flip event,
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* put events for that CRTC in the vblank_deferred list.
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*/
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static void
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amdgpu_drm_handle_vblank_signalled(void)
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{
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drmmode_crtc_private_ptr drmmode_crtc;
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struct amdgpu_drm_queue_entry *e;
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while (!xorg_list_is_empty(&amdgpu_drm_vblank_signalled)) {
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e = xorg_list_first_entry(&amdgpu_drm_vblank_signalled,
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struct amdgpu_drm_queue_entry, list);
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drmmode_crtc = e->crtc->driver_private;
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if (drmmode_crtc->wait_flip_nesting_level == 0) {
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amdgpu_drm_queue_handle_one(e);
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continue;
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}
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xorg_list_del(&e->list);
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xorg_list_append(&e->list, &amdgpu_drm_vblank_deferred);
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}
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}
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/*
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* Handle deferred DRM vblank events
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*
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* This function must be called after amdgpu_drm_wait_pending_flip, once
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* it's safe to attempt queueing a flip again
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*/
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void
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amdgpu_drm_queue_handle_deferred(xf86CrtcPtr crtc)
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{
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drmmode_crtc_private_ptr drmmode_crtc = crtc->driver_private;
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struct amdgpu_drm_queue_entry *e, *tmp;
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if (drmmode_crtc->wait_flip_nesting_level == 0 ||
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--drmmode_crtc->wait_flip_nesting_level > 0)
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return;
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/* Put previously deferred vblank events for this CRTC back in the
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* signalled queue
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*/
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xorg_list_for_each_entry_safe(e, tmp, &amdgpu_drm_vblank_deferred, list) {
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if (e->crtc != crtc)
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continue;
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xorg_list_del(&e->list);
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xorg_list_append(&e->list, &amdgpu_drm_vblank_signalled);
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}
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amdgpu_drm_handle_vblank_signalled();
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}
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/*
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* Enqueue a potential drm response; when the associated response
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* appears, we've got data to pass to the handler from here
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*/
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uintptr_t
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amdgpu_drm_queue_alloc(xf86CrtcPtr crtc, ClientPtr client,
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uint64_t id, void *data,
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amdgpu_drm_handler_proc handler,
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amdgpu_drm_abort_proc abort,
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Bool is_flip)
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{
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struct amdgpu_drm_queue_entry *e;
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e = calloc(1, sizeof(struct amdgpu_drm_queue_entry));
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if (!e)
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return AMDGPU_DRM_QUEUE_ERROR;
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if (_X_UNLIKELY(amdgpu_drm_queue_seq == AMDGPU_DRM_QUEUE_ERROR))
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amdgpu_drm_queue_seq++;
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e->seq = amdgpu_drm_queue_seq++;
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e->client = client;
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e->crtc = crtc;
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e->id = id;
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e->data = data;
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e->handler = handler;
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e->abort = abort;
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e->is_flip = is_flip;
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xorg_list_append(&e->list, &amdgpu_drm_queue);
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return e->seq;
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}
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/*
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* Abort drm queue entries for a client
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*
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* NOTE: This keeps the entries in the list until the DRM event arrives,
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* but then it calls the abort functions instead of the handler
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* functions.
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*/
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void
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amdgpu_drm_abort_client(ClientPtr client)
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{
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struct amdgpu_drm_queue_entry *e;
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xorg_list_for_each_entry(e, &amdgpu_drm_queue, list) {
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if (e->client == client)
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e->handler = NULL;
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}
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}
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/*
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* Abort specific drm queue entry
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*/
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void
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amdgpu_drm_abort_entry(uintptr_t seq)
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{
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struct amdgpu_drm_queue_entry *e, *tmp;
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if (seq == AMDGPU_DRM_QUEUE_ERROR)
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return;
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xorg_list_for_each_entry_safe(e, tmp, &amdgpu_drm_vblank_signalled, list) {
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if (e->seq == seq) {
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amdgpu_drm_abort_one(e);
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return;
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}
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}
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xorg_list_for_each_entry_safe(e, tmp, &amdgpu_drm_vblank_deferred, list) {
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if (e->seq == seq) {
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amdgpu_drm_abort_one(e);
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return;
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}
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}
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xorg_list_for_each_entry_safe(e, tmp, &amdgpu_drm_queue, list) {
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if (e->seq == seq) {
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amdgpu_drm_abort_one(e);
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break;
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}
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}
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}
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/*
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* Abort specific drm queue entry by ID
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*/
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void
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amdgpu_drm_abort_id(uint64_t id)
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{
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struct amdgpu_drm_queue_entry *e, *tmp;
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xorg_list_for_each_entry_safe(e, tmp, &amdgpu_drm_queue, list) {
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if (e->id == id) {
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amdgpu_drm_abort_one(e);
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break;
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}
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}
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}
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/*
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* drmHandleEvent wrapper
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*/
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int
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amdgpu_drm_handle_event(int fd, drmEventContext *event_context)
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{
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struct amdgpu_drm_queue_entry *e;
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int r;
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/* Retry drmHandleEvent if it was interrupted by a signal in read() */
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do {
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r = drmHandleEvent(fd, event_context);
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} while (r < 0 && (errno == EINTR || errno == EAGAIN));
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if (r < 0) {
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static Bool printed;
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if (!printed) {
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ErrorF("%s: drmHandleEvent returned %d, errno=%d (%s)\n",
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__func__, r, errno, strerror(errno));
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printed = TRUE;
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}
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}
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while (!xorg_list_is_empty(&amdgpu_drm_flip_signalled)) {
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e = xorg_list_first_entry(&amdgpu_drm_flip_signalled,
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struct amdgpu_drm_queue_entry, list);
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amdgpu_drm_queue_handle_one(e);
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}
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amdgpu_drm_handle_vblank_signalled();
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return r;
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}
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/*
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* Wait for pending page flip on given CRTC to complete
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*/
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void amdgpu_drm_wait_pending_flip(xf86CrtcPtr crtc)
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{
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drmmode_crtc_private_ptr drmmode_crtc = crtc->driver_private;
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AMDGPUEntPtr pAMDGPUEnt = AMDGPUEntPriv(crtc->scrn);
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struct amdgpu_drm_queue_entry *e;
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drmmode_crtc->wait_flip_nesting_level++;
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while (drmmode_crtc->flip_pending &&
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!xorg_list_is_empty(&amdgpu_drm_flip_signalled)) {
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e = xorg_list_first_entry(&amdgpu_drm_flip_signalled,
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struct amdgpu_drm_queue_entry, list);
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amdgpu_drm_queue_handle_one(e);
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}
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while (drmmode_crtc->flip_pending
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&& amdgpu_drm_handle_event(pAMDGPUEnt->fd,
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&drmmode_crtc->drmmode->event_context) >= 0);
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}
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/*
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* Initialize the DRM event queue
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*/
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void
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amdgpu_drm_queue_init(ScrnInfoPtr scrn)
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{
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AMDGPUInfoPtr info = AMDGPUPTR(scrn);
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drmmode_ptr drmmode = &info->drmmode;
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drmmode->event_context.version = 2;
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drmmode->event_context.vblank_handler = amdgpu_drm_queue_handler;
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drmmode->event_context.page_flip_handler = amdgpu_drm_queue_handler;
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if (amdgpu_drm_queue_refcnt++)
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return;
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xorg_list_init(&amdgpu_drm_queue);
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xorg_list_init(&amdgpu_drm_flip_signalled);
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xorg_list_init(&amdgpu_drm_vblank_signalled);
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xorg_list_init(&amdgpu_drm_vblank_deferred);
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}
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/*
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* Deinitialize the DRM event queue
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*/
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void
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amdgpu_drm_queue_close(ScrnInfoPtr scrn)
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{
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struct amdgpu_drm_queue_entry *e, *tmp;
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xorg_list_for_each_entry_safe(e, tmp, &amdgpu_drm_queue, list) {
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if (e->crtc->scrn == scrn)
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amdgpu_drm_abort_one(e);
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}
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amdgpu_drm_queue_refcnt--;
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}
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