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gpu: nvgpu: cyclestats mode E snapshots support

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That is a kernel supporting code for cyclestats mode E.
Cyclestats mode E implemented following Windows-design in user-space
and required the following operations to be implemented:
- attach a client for shared hardware buffer of device
- detach client from shared hardware buffer
- flush means copy of available data from hardware buffer to private
  client buffers according to perfmon IDs assigned for clients
- perfmon IDs management for user-space clients
- a NVGPU_GPU_FLAGS_SUPPORT_CYCLE_STATS_SNAPSHOT capability added

Bug 1573150

Change-Id: I9e09f0fbb2be5a95c47e6d80a2e23fa839b46f9a
Signed-off-by: Leonid Moiseichuk <lmoiseichuk@nvidia.com>
Reviewed-on: http://git-master/r/740653
(cherry picked from commit 79fe89fd4cea39d8ab9dbef0558cd806ddfda87f)
Reviewed-on: http://git-master/r/753274
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Leonid Moiseichuk
2015-05-08 15:06:42 +03:00
committed by Terje Bergstrom
parent ef8fa4999f
commit 837ceffcab
10 changed files with 1225 additions and 2 deletions
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21
include/uapi/linux/nvgpu.h
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@@ -106,6 +106,8 @@ struct nvgpu_gpu_zbc_query_table_args {
#define NVGPU_GPU_FLAGS_SUPPORT_CYCLE_STATS (1 << 4)
/* MAP_BUFFER_EX with unmapped PTE */
#define NVGPU_GPU_FLAGS_SUPPORT_UNMAPPED_PTE (1 << 5)
/* NVGPU_IOCTL_CHANNEL_CYCLE_STATS_SNAPSHOT is available */
#define NVGPU_GPU_FLAGS_SUPPORT_CYCLE_STATS_SNAPSHOT (1 << 6)
struct nvgpu_gpu_characteristics {
__u32 arch;
@@ -731,6 +733,21 @@ struct nvgpu_channel_events_ctrl_args {
#define NVGPU_IOCTL_CHANNEL_EVENTS_CTRL_CMD_ENABLE 1
#define NVGPU_IOCTL_CHANNEL_EVENTS_CTRL_CMD_CLEAR 2
/* cycle stats snapshot buffer support for mode E */
struct nvgpu_cycle_stats_snapshot_args {
__u32 cmd; /* in: command to handle */
__u32 dmabuf_fd; /* in: dma buffer handler */
__u32 extra; /* in/out: extra payload e.g.*/
/* counter/start perfmon */
__u32 pad0[1];
};
/* valid commands to control cycle stats shared buffer */
#define NVGPU_IOCTL_CHANNEL_CYCLE_STATS_SNAPSHOT_CMD_FLUSH 0
#define NVGPU_IOCTL_CHANNEL_CYCLE_STATS_SNAPSHOT_CMD_ATTACH 1
#define NVGPU_IOCTL_CHANNEL_CYCLE_STATS_SNAPSHOT_CMD_DETACH 2
#define NVGPU_IOCTL_CHANNEL_SET_NVMAP_FD \
_IOW(NVGPU_IOCTL_MAGIC, 5, struct nvgpu_set_nvmap_fd_args)
#define NVGPU_IOCTL_CHANNEL_SET_TIMEOUT \
@@ -769,9 +786,11 @@ struct nvgpu_channel_events_ctrl_args {
_IO(NVGPU_IOCTL_MAGIC, 116)
#define NVGPU_IOCTL_CHANNEL_EVENTS_CTRL \
_IOW(NVGPU_IOCTL_MAGIC, 117, struct nvgpu_channel_events_ctrl_args)
#define NVGPU_IOCTL_CHANNEL_CYCLE_STATS_SNAPSHOT \
_IOWR(NVGPU_IOCTL_MAGIC, 118, struct nvgpu_cycle_stats_snapshot_args)
#define NVGPU_IOCTL_CHANNEL_LAST \
_IOC_NR(NVGPU_IOCTL_CHANNEL_EVENTS_CTRL)
_IOC_NR(NVGPU_IOCTL_CHANNEL_CYCLE_STATS_SNAPSHOT)
#define NVGPU_IOCTL_CHANNEL_MAX_ARG_SIZE sizeof(struct nvgpu_submit_gpfifo_args)
/*