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/*
* Copyright 2014 Red Hat 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Ben Skeggs <bskeggs@redhat.com>
*/
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <xf86drm.h>
#include <nvif/client.h>
#include <nvif/driver.h>
#include <nvif/notify.h>
#include <nvif/unpack.h>
#include <nvif/event.h>
#include <nvif/ioctl.h>
#include <drm/uapi/drm/nouveau_drm.h>
struct drm_client_priv {
int fd;
u32 version;
pthread_t event;
bool done;
};
static void
drm_client_unmap(void *priv, void *ptr, u32 size)
{
}
static void *
drm_client_map(void *priv, u64 handle, u32 size)
{
return NULL;
}
static int
drm_client_ioctl(void *priv, bool super, void *data, u32 size, void **hack)
{
const unsigned long request = DRM_IOC(DRM_IOC_READWRITE, DRM_IOCTL_BASE,
DRM_COMMAND_BASE +
DRM_NOUVEAU_NVIF, size);
struct drm_client_priv *drm = priv;
int ret = ioctl(drm->fd, request, data);
if (ret < 0)
return -errno;
return ret;
}
static int
drm_client_resume(void *priv)
{
return -EINVAL;
}
static int
drm_client_suspend(void *priv)
{
return -ENOSYS;
}
static void
drm_client_notify(void *repv, u32 repc)
{
union {
struct nvif_notify_rep_v0 v0;
} *rep = repv;
void *data = repv;
u32 size = repc;
u64 token;
u8 route;
int ret;
printf("notify %d\n", repc);
if (nvif_unpack(rep->v0, 0, 0, true)) {
token = rep->v0.token;
route = rep->v0.route;
} else
assert(0);
switch (route) {
case NVIF_NOTIFY_V0_ROUTE_NVIF: {
struct nvif_notify *notify = (void *)(unsigned long)token;
assert(notify);
nvif_notify(repv, sizeof(rep->v0), data, size);
}
break;
default:
assert(0);
break;
}
}
static void *
drm_client_event(void *arg)
{
struct drm_client_priv *drm = arg;
struct drm_event *e;
char data[1024];
ssize_t size;
int i;
while (1) {
if ((size = read(drm->fd, data, sizeof(data))) <= 0)
continue;
for (i = 0; e = (void *)&data[i], i < size; i += e->length) {
u32 size = e->length - sizeof(*e);
u8 *data = (u8 *)e + sizeof(*e);
switch (e->type) {
case DRM_NOUVEAU_EVENT_NVIF:
drm_client_notify(data, size);
continue;
default:
break;
}
fprintf(stderr, "event %08x, %d\n", e->type, size);
}
}
return NULL;
}
static void
drm_client_fini(void *priv)
{
struct drm_client_priv *drm = priv;
if (drm) {
if (drm->fd >= 0) {
if (drm->done) {
pthread_cancel(drm->event);
pthread_join(drm->event, NULL);
}
close(drm->fd);
}
free(drm);
}
}
#define DRM_RENDER_PATH "/dev/dri/renderD"
#define DRM_RENDER_MIN 128
#define DRM_RENDER_MAX (128 + 63)
static int
drm_client_init(const char *name, u64 device, const char *cfg,
const char *dbg, void **ppriv)
{
struct drm_client_priv *drm;
drmVersionPtr ver;
int ret, minor;
char path[128];
if (ret = -ENOMEM, !(drm = *ppriv = malloc(sizeof(*drm))))
goto fail;
for (minor = DRM_RENDER_MIN; minor <= DRM_RENDER_MAX; minor++) {
snprintf(path, sizeof(path), "/dev/dri/renderD%d", minor);
if ((drm->fd = open(path, O_RDWR, 0)) < 0)
continue;
if ((ver = drmGetVersion(drm->fd)) == NULL)
continue;
if (!strcmp(ver->name, "nouveau"))
break;
free(ver);
}
if (ret = -ENODEV, minor > DRM_RENDER_MAX)
goto fail;
drm->version = (ver->version_major << 24) |
(ver->version_minor << 8) |
ver->version_patchlevel;
free(ver);
if (ret = -ENOSYS, drm->version < 0x01000200)
goto fail;
if ((ret = pthread_create(&drm->event, NULL, drm_client_event, drm)))
goto fail;
drm->done = true;
return 0;
fail:
drm_client_fini(drm);
return ret;
}
const struct nvif_driver
nvif_driver_drm = {
.name = "drm",
.init = drm_client_init,
.fini = drm_client_fini,
.suspend = drm_client_suspend,
.resume = drm_client_resume,
.ioctl = drm_client_ioctl,
.map = drm_client_map,
.unmap = drm_client_unmap,
.keep = true,
};
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