gpu: nvgpu: get voltage, current, power and temperature

Add ioctls to retrieve voltage, current, power and temperature.
Add flags in GPU characteristics to indicate if feature is supported.

Jira DNVGPU-166

Change-Id: Idd5a767326c9d43630e8289ca7d2c27bb96a9f14
Signed-off-by: David Nieto <dmartineznie@nvidia.com>
Reviewed-on: http://git-master/r/1241862
Tested-by: Thomas Fleury <tfleury@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-on: http://git-master/r/1267153

1 files changed, 33 insertions, 0 deletions

diff --git a/include/uapi/linux/nvgpu.h b/include/uapi/linux/nvgpu.h
index 13492e0d..f45be911 100644
--- a/include/uapi/linux/nvgpu.h
+++ b/include/uapi/linux/nvgpu.h
@@ -721,6 +721,31 @@ struct nvgpu_gpu_get_fbp_l2_masks_args {
         __u64 mask_buf_addr;
 };
 
+#define NVGPU_GPU_VOLTAGE_CORE          1
+#define NVGPU_GPU_VOLTAGE_SRAM          2
+#define NVGPU_GPU_VOLTAGE_BUS           3       /* input to regulator */
+
+struct nvgpu_gpu_get_voltage_args {
+        __u64 reserved;
+        __u32 which;            /* in: NVGPU_GPU_VOLTAGE_* */
+        __u32 voltage;          /* uV */
+};
+
+struct nvgpu_gpu_get_current_args {
+        __u32 reserved[3];
+        __u32 currnt;           /* mA */
+};
+
+struct nvgpu_gpu_get_power_args {
+        __u32 reserved[3];
+        __u32 power;            /* mW */
+};
+
+struct nvgpu_gpu_get_temperature_args {
+        __u32 reserved[3];
+        __u32 temperature;      /* mC */
+};
+
 #define NVGPU_GPU_IOCTL_ZCULL_GET_CTX_SIZE \
         _IOR(NVGPU_GPU_IOCTL_MAGIC, 1, struct nvgpu_gpu_zcull_get_ctx_size_args)
 #define NVGPU_GPU_IOCTL_ZCULL_GET_INFO \
@@ -792,6 +817,14 @@ struct nvgpu_gpu_get_fbp_l2_masks_args {
 #define NVGPU_GPU_IOCTL_GET_MEMORY_STATE \
         _IOWR(NVGPU_GPU_IOCTL_MAGIC, 33, \
                         struct nvgpu_gpu_get_memory_state_args)
+#define NVGPU_GPU_IOCTL_GET_VOLTAGE \
+        _IOWR(NVGPU_GPU_IOCTL_MAGIC, 33, struct nvgpu_gpu_get_voltage_args)
+#define NVGPU_GPU_IOCTL_GET_CURRENT \
+        _IOWR(NVGPU_GPU_IOCTL_MAGIC, 34, struct nvgpu_gpu_get_current_args)
+#define NVGPU_GPU_IOCTL_GET_POWER \
+        _IOWR(NVGPU_GPU_IOCTL_MAGIC, 35, struct nvgpu_gpu_get_power_args)
+#define NVGPU_GPU_IOCTL_GET_TEMPERATURE \
+        _IOWR(NVGPU_GPU_IOCTL_MAGIC, 36, struct nvgpu_gpu_get_temperature_args)
 #define NVGPU_GPU_IOCTL_GET_FBP_L2_MASKS \
         _IOWR(NVGPU_GPU_IOCTL_MAGIC, 38, struct nvgpu_gpu_get_fbp_l2_masks_args)
 #define NVGPU_GPU_IOCTL_LAST            \