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gpu: nvgpu: separate IOCTL to set preemption mode

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Add separate IOCTL NVGPU_IOCTL_CHANNEL_SET_PREEMPTION_MODE
to allow setting preemption modes from UMD

Define preemption modes in nvgpu.h and use them everywhere
Remove mode definitions from mm_gk20a.h

Also, we support setting only one preemption mode in a channel
But it is possible to have multiple preemption modes (one from
graphics and one from compute) set simultaneously

Hence, update struct gr_ctx_desc to include two separate
preemption modes (graphics_preempt_mode and compute_preempt_mode)

API NVGPU_IOCTL_CHANNEL_SET_PREEMPTION_MODE also supports
setting two separate preemption modes i.e. one for graphics
and one for compute

Make necessary changes in code to support two preemption
modes

Bug 1646259

Change-Id: Ia1dea19e609ba8cc0de2f39ab6c0c4cd6b0a752c
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1131805
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Deepak Nibade
2016-04-19 16:57:49 +05:30
committed by Terje Bergstrom
parent f14152c081
commit d868b65441
8 changed files with 89 additions and 34 deletions
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14
include/uapi/linux/nvgpu.h
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@@ -999,6 +999,16 @@ struct nvgpu_event_id_ctrl_args {
#define NVGPU_IOCTL_CHANNEL_EVENT_ID_CMD_ENABLE 1
struct nvgpu_preemption_mode_args {
/* only one should be enabled at a time */
#define NVGPU_GRAPHICS_PREEMPTION_MODE_WFI BIT(0)
__u32 graphics_preempt_mode; /* in */
/* only one should be enabled at a time */
#define NVGPU_COMPUTE_PREEMPTION_MODE_WFI BIT(0)
#define NVGPU_COMPUTE_PREEMPTION_MODE_CTA BIT(1)
__u32 compute_preempt_mode; /* in */
};
#define NVGPU_IOCTL_CHANNEL_SET_NVMAP_FD \
_IOW(NVGPU_IOCTL_MAGIC, 5, struct nvgpu_set_nvmap_fd_args)
@@ -1046,9 +1056,11 @@ struct nvgpu_event_id_ctrl_args {
_IOW(NVGPU_IOCTL_MAGIC, 120, struct nvgpu_runlist_interleave_args)
#define NVGPU_IOCTL_CHANNEL_SET_TIMESLICE \
_IOW(NVGPU_IOCTL_MAGIC, 121, struct nvgpu_timeslice_args)
#define NVGPU_IOCTL_CHANNEL_SET_PREEMPTION_MODE \
_IOW(NVGPU_IOCTL_MAGIC, 122, struct nvgpu_preemption_mode_args)
#define NVGPU_IOCTL_CHANNEL_LAST \
_IOC_NR(NVGPU_IOCTL_CHANNEL_SET_TIMESLICE)
_IOC_NR(NVGPU_IOCTL_CHANNEL_SET_PREEMPTION_MODE)
#define NVGPU_IOCTL_CHANNEL_MAX_ARG_SIZE sizeof(struct nvgpu_submit_gpfifo_args)
/*