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gpu: nvgpu: move cycle state buffer handler to linux

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We use dma_buf pointer cyclestate_buffer_handler in common code
But since this is linux specific, we need to move this out of common code and
into linux specific code

Move dma_buf pointer cyclestate_buffer_handler from common channel code to
struct nvgpu_channel_linux

Fix all pointer accesses to this handle

Move gk20a_channel_free_cycle_stats_buffer() to ioctl_channel.c since it is
mostly linux specific
And since gk20a_channel_free_cycle_stats_buffer() needs to be called while
closing the channel, call it from nvgpu_channel_close_linux()

Jira NVGPU-397
Jira NVGPU-415

Change-Id: Ifb429e49b8f7a1c9e2bc757f3efdd50b28ceca1f
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1603909
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Deepak Nibade
2017-11-23 03:59:14 -08:00
committed by mobile promotions
parent 861b11a968
commit ce06f74d6b
6 changed files with 30 additions and 33 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/gpu/nvgpu/common/linux/ioctl_channel.c
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@@ -102,17 +102,35 @@ struct channel_priv {
#if defined(CONFIG_GK20A_CYCLE_STATS)
void gk20a_channel_free_cycle_stats_buffer(struct channel_gk20a *ch)
{
struct nvgpu_channel_linux *priv = ch->os_priv;
/* disable existing cyclestats buffer */
nvgpu_mutex_acquire(&ch->cyclestate.cyclestate_buffer_mutex);
if (priv->cyclestate_buffer_handler) {
dma_buf_vunmap(priv->cyclestate_buffer_handler,
ch->cyclestate.cyclestate_buffer);
dma_buf_put(priv->cyclestate_buffer_handler);
priv->cyclestate_buffer_handler = NULL;
ch->cyclestate.cyclestate_buffer = NULL;
ch->cyclestate.cyclestate_buffer_size = 0;
}
nvgpu_mutex_release(&ch->cyclestate.cyclestate_buffer_mutex);
}
static int gk20a_channel_cycle_stats(struct channel_gk20a *ch,
struct nvgpu_cycle_stats_args *args)
{
struct dma_buf *dmabuf;
void *virtual_address;
struct nvgpu_channel_linux *priv = ch->os_priv;
/* is it allowed to handle calls for current GPU? */
if (!nvgpu_is_enabled(ch->g, NVGPU_SUPPORT_CYCLE_STATS))
return -ENOSYS;
if (args->dmabuf_fd && !ch->cyclestate.cyclestate_buffer_handler) {
if (args->dmabuf_fd && !priv->cyclestate_buffer_handler) {
/* set up new cyclestats buffer */
dmabuf = dma_buf_get(args->dmabuf_fd);
@@ -122,18 +140,16 @@ static int gk20a_channel_cycle_stats(struct channel_gk20a *ch,
if (!virtual_address)
return -ENOMEM;
ch->cyclestate.cyclestate_buffer_handler = dmabuf;
priv->cyclestate_buffer_handler = dmabuf;
ch->cyclestate.cyclestate_buffer = virtual_address;
ch->cyclestate.cyclestate_buffer_size = dmabuf->size;
return 0;
} else if (!args->dmabuf_fd &&
ch->cyclestate.cyclestate_buffer_handler) {
} else if (!args->dmabuf_fd && priv->cyclestate_buffer_handler) {
gk20a_channel_free_cycle_stats_buffer(ch);
return 0;
} else if (!args->dmabuf_fd &&
!ch->cyclestate.cyclestate_buffer_handler) {
} else if (!args->dmabuf_fd && !priv->cyclestate_buffer_handler) {
/* no requst from GL */
return 0;