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/*
* Copyright © 2007 Red Hat, Inc.
* Copyright © 2015 Advanced Micro Devices, Inc.
*
* 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, sublicense,
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*
* Authors:
* Dave Airlie <airlied@redhat.com>
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <xorg-server.h>
#include <X11/Xdefs.h>
#include <list.h>
#include "amdgpu_drv.h"
#include "amdgpu_drm_queue.h"
struct amdgpu_drm_queue_entry {
struct xorg_list list;
uint64_t id;
uintptr_t seq;
void *data;
ClientPtr client;
xf86CrtcPtr crtc;
amdgpu_drm_handler_proc handler;
amdgpu_drm_abort_proc abort;
};
static int amdgpu_drm_queue_refcnt;
static struct xorg_list amdgpu_drm_queue;
static uintptr_t amdgpu_drm_queue_seq;
/*
* Handle a DRM event
*/
void
amdgpu_drm_queue_handler(int fd, unsigned int frame, unsigned int sec,
unsigned int usec, void *user_ptr)
{
uintptr_t seq = (uintptr_t)user_ptr;
struct amdgpu_drm_queue_entry *e, *tmp;
xorg_list_for_each_entry_safe(e, tmp, &amdgpu_drm_queue, list) {
if (e->seq == seq) {
xorg_list_del(&e->list);
if (e->handler)
e->handler(e->crtc, frame,
(uint64_t)sec * 1000000 + usec,
e->data);
else
e->abort(e->crtc, e->data);
free(e);
break;
}
}
}
/*
* Enqueue a potential drm response; when the associated response
* appears, we've got data to pass to the handler from here
*/
uintptr_t
amdgpu_drm_queue_alloc(xf86CrtcPtr crtc, ClientPtr client,
uint64_t id, void *data,
amdgpu_drm_handler_proc handler,
amdgpu_drm_abort_proc abort)
{
struct amdgpu_drm_queue_entry *e;
e = calloc(1, sizeof(struct amdgpu_drm_queue_entry));
if (!e)
return AMDGPU_DRM_QUEUE_ERROR;
if (_X_UNLIKELY(amdgpu_drm_queue_seq == AMDGPU_DRM_QUEUE_ERROR))
amdgpu_drm_queue_seq++;
e->seq = amdgpu_drm_queue_seq++;
e->client = client;
e->crtc = crtc;
e->id = id;
e->data = data;
e->handler = handler;
e->abort = abort;
xorg_list_append(&e->list, &amdgpu_drm_queue);
return e->seq;
}
/*
* Abort one queued DRM entry, removing it
* from the list, calling the abort function and
* freeing the memory
*/
static void
amdgpu_drm_abort_one(struct amdgpu_drm_queue_entry *e)
{
xorg_list_del(&e->list);
e->abort(e->crtc, e->data);
free(e);
}
/*
* Abort drm queue entries for a client
*
* NOTE: This keeps the entries in the list until the DRM event arrives,
* but then it calls the abort functions instead of the handler
* functions.
*/
void
amdgpu_drm_abort_client(ClientPtr client)
{
struct amdgpu_drm_queue_entry *e;
xorg_list_for_each_entry(e, &amdgpu_drm_queue, list) {
if (e->client == client)
e->handler = NULL;
}
}
/*
* Abort specific drm queue entry
*/
void
amdgpu_drm_abort_entry(uintptr_t seq)
{
struct amdgpu_drm_queue_entry *e, *tmp;
xorg_list_for_each_entry_safe(e, tmp, &amdgpu_drm_queue, list) {
if (e->seq == seq) {
amdgpu_drm_abort_one(e);
break;
}
}
}
/*
* Abort specific drm queue entry by ID
*/
void
amdgpu_drm_abort_id(uint64_t id)
{
struct amdgpu_drm_queue_entry *e, *tmp;
xorg_list_for_each_entry_safe(e, tmp, &amdgpu_drm_queue, list) {
if (e->id == id) {
amdgpu_drm_abort_one(e);
break;
}
}
}
/*
* Initialize the DRM event queue
*/
void
amdgpu_drm_queue_init()
{
if (amdgpu_drm_queue_refcnt++)
return;
xorg_list_init(&amdgpu_drm_queue);
}
/*
* Deinitialize the DRM event queue
*/
void
amdgpu_drm_queue_close(ScrnInfoPtr scrn)
{
struct amdgpu_drm_queue_entry *e, *tmp;
xorg_list_for_each_entry_safe(e, tmp, &amdgpu_drm_queue, list) {
if (e->crtc->scrn == scrn)
amdgpu_drm_abort_one(e);
}
amdgpu_drm_queue_refcnt--;
}
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