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gpu: nvgpu: set instance specific characteristics

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Update gk20a_ctrl_dev_ioctl() to fetch gpu_instance_id with
nvgpu_get_gpu_instance_id_from_cdev() and gr_instance_id with
nvgpu_grmgr_get_gr_instance_id().

Get instance specific GR engine configuration pointer with
nvgpu_gr_get_gpu_instance_config_ptr()

Update gk20a_ctrl_ioctl_gpu_characteristics() to return instance
specific characteristics with below changes :

- 0th GPU instance is a physical instance. Set a limited and relevant
  characteristics flags for 0th instance.
  For rest of the instances and non-MIG mode, continue fetching flags
  with nvgpu_ctrl_ioctl_gpu_characteristics_flags.

- nvgpu_set_preemption_mode_flags() should be set only for non-MIG mode
  and non-zero instance in MIG mode.

- In MIG mode, 0th instance does not support any classes. Rest of the
  instances support only compute, copy and gpfifo classes.
  Non-MIG mode supports all the classes including graphics ones.

- Fetch gpu_instance_id/gr_sys_pipe_id/gr_instance_id from gpu_instance
  pointer.

- Fetch max_veid_count_per_tsg from gpu_instance pointer.

Also update nvgpu_gr_get_zcull_ptr() and nvgpu_gr_get_zbc_ptr() to
return instance specific pointers. zcull/zbc are not supported in MIG
mode, this is just for consistency of the code.

Jira NVGPU-5648

Change-Id: I764526061542c48ed87659844e16dd0e0253c588
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2436752
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Deepak Nibade
2020-10-22 16:24:18 +05:30
committed by Alex Waterman
parent 7cdfcbafc0
commit 6e1495f45f
2 changed files with 62 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/nvgpu/common/gr/gr_utils.c
View File

@@ -74,12 +74,14 @@ void nvgpu_gr_override_ecc_val(struct nvgpu_gr *gr, u32 ecc_val)
#ifdef CONFIG_NVGPU_GRAPHICS
struct nvgpu_gr_zcull *nvgpu_gr_get_zcull_ptr(struct gk20a *g)
{
return g->gr->zcull;
struct nvgpu_gr *gr = nvgpu_gr_get_cur_instance_ptr(g);
return gr->zcull;
}
struct nvgpu_gr_zbc *nvgpu_gr_get_zbc_ptr(struct gk20a *g)
{
return g->gr->zbc;
struct nvgpu_gr *gr = nvgpu_gr_get_cur_instance_ptr(g);
return gr->zbc;
}
#endif

82
drivers/gpu/nvgpu/os/linux/ioctl_ctrl.c
View File

@@ -44,6 +44,7 @@
#endif
#include <nvgpu/gr/gr.h>
#include <nvgpu/gr/gr_utils.h>
#include <nvgpu/gr/gr_instances.h>
#include <nvgpu/gr/warpstate.h>
#include <nvgpu/channel.h>
#include <nvgpu/pmu/pmgr.h>
@@ -55,6 +56,7 @@
#include <nvgpu/nvgpu_init.h>
#include <nvgpu/user_fence.h>
#include <nvgpu/nvgpu_init.h>
#include <nvgpu/grmgr.h>
#include "ioctl_ctrl.h"
#include "ioctl_dbg.h"
@@ -338,14 +340,13 @@ static void nvgpu_set_preemption_mode_flags(struct gk20a *g,
default_compute_preempt_mode);
}
static long
gk20a_ctrl_ioctl_gpu_characteristics(
struct gk20a *g,
struct nvgpu_gpu_get_characteristics *request)
static long gk20a_ctrl_ioctl_gpu_characteristics(
struct gk20a *g, u32 gpu_instance_id, struct nvgpu_gr_config *gr_config,
struct nvgpu_gpu_get_characteristics *request)
{
struct nvgpu_gpu_characteristics gpu;
long err = 0;
struct nvgpu_gr_config *gr_config = nvgpu_gr_get_config_ptr(g);
struct nvgpu_gpu_instance *gpu_instance;
if (gk20a_busy(g)) {
nvgpu_err(g, "failed to power on gpu");
@@ -353,6 +354,7 @@ gk20a_ctrl_ioctl_gpu_characteristics(
}
(void) memset(&gpu, 0, sizeof(gpu));
gpu_instance = &g->mig.gpu_instance[gpu_instance_id];
gpu.L2_cache_size = g->ops.ltc.determine_L2_size_bytes(g);
gpu.on_board_video_memory_size = 0; /* integrated GPU */
@@ -365,7 +367,8 @@ gk20a_ctrl_ioctl_gpu_characteristics(
gpu.num_ppc_per_gpc = nvgpu_gr_config_get_pe_count_per_gpc(gr_config);
gpu.max_veid_count_per_tsg = g->fifo.max_subctx_count;
gpu.max_veid_count_per_tsg =
gpu_instance->gr_syspipe.max_veid_count_per_tsg;
gpu.bus_type = NVGPU_GPU_BUS_TYPE_AXI; /* always AXI for now */
@@ -377,7 +380,22 @@ gk20a_ctrl_ioctl_gpu_characteristics(
gpu.cbc_comptags_per_line = g->cbc->comptags_per_cacheline;
#endif
gpu.flags = nvgpu_ctrl_ioctl_gpu_characteristics_flags(g);
if (!nvgpu_is_enabled(g, NVGPU_SUPPORT_MIG) || (gpu_instance_id != 0U)) {
gpu.flags = nvgpu_ctrl_ioctl_gpu_characteristics_flags(g);
nvgpu_set_preemption_mode_flags(g, &gpu);
} else {
gpu.flags = (NVGPU_GPU_FLAGS_SUPPORT_CLOCK_CONTROLS |
NVGPU_GPU_FLAGS_SUPPORT_GET_VOLTAGE |
NVGPU_GPU_FLAGS_SUPPORT_GET_CURRENT |
NVGPU_GPU_FLAGS_SUPPORT_GET_POWER |
NVGPU_GPU_FLAGS_SUPPORT_GET_TEMPERATURE |
NVGPU_GPU_FLAGS_SUPPORT_SET_THERM_ALERT_LIMIT |
NVGPU_GPU_FLAGS_SUPPORT_DEVICE_EVENTS |
NVGPU_GPU_FLAGS_SUPPORT_SM_TTU |
NVGPU_GPU_FLAGS_SUPPORT_PROFILER_V2_DEVICE |
NVGPU_GPU_FLAGS_SUPPORT_PROFILER_V2_CONTEXT |
NVGPU_GPU_FLAGS_SUPPORT_SMPC_GLOBAL_MODE);
}
gpu.arch = g->params.gpu_arch;
gpu.impl = g->params.gpu_impl;
@@ -385,16 +403,26 @@ gk20a_ctrl_ioctl_gpu_characteristics(
gpu.reg_ops_limit = NVGPU_IOCTL_DBG_REG_OPS_LIMIT;
gpu.map_buffer_batch_limit = nvgpu_is_enabled(g, NVGPU_SUPPORT_MAP_BUFFER_BATCH) ?
NVGPU_IOCTL_AS_MAP_BUFFER_BATCH_LIMIT : 0;
if (nvgpu_is_enabled(g, NVGPU_SUPPORT_MIG)) {
if (gpu_instance_id != 0U) {
gpu.compute_class = g->ops.get_litter_value(g, GPU_LIT_COMPUTE_CLASS);
gpu.gpfifo_class = g->ops.get_litter_value(g, GPU_LIT_GPFIFO_CLASS);
gpu.dma_copy_class =
g->ops.get_litter_value(g, GPU_LIT_DMA_COPY_CLASS);
}
} else {
#ifdef CONFIG_NVGPU_GRAPHICS
gpu.twod_class = g->ops.get_litter_value(g, GPU_LIT_TWOD_CLASS);
gpu.threed_class = g->ops.get_litter_value(g, GPU_LIT_THREED_CLASS);
gpu.twod_class = g->ops.get_litter_value(g, GPU_LIT_TWOD_CLASS);
gpu.threed_class = g->ops.get_litter_value(g, GPU_LIT_THREED_CLASS);
#endif
gpu.compute_class = g->ops.get_litter_value(g, GPU_LIT_COMPUTE_CLASS);
gpu.gpfifo_class = g->ops.get_litter_value(g, GPU_LIT_GPFIFO_CLASS);
gpu.inline_to_memory_class =
g->ops.get_litter_value(g, GPU_LIT_I2M_CLASS);
gpu.dma_copy_class =
g->ops.get_litter_value(g, GPU_LIT_DMA_COPY_CLASS);
gpu.compute_class = g->ops.get_litter_value(g, GPU_LIT_COMPUTE_CLASS);
gpu.gpfifo_class = g->ops.get_litter_value(g, GPU_LIT_GPFIFO_CLASS);
gpu.inline_to_memory_class =
g->ops.get_litter_value(g, GPU_LIT_I2M_CLASS);
gpu.dma_copy_class =
g->ops.get_litter_value(g, GPU_LIT_DMA_COPY_CLASS);
}
#ifdef CONFIG_NVGPU_DGPU
gpu.vbios_version = nvgpu_bios_get_vbios_version(g);
@@ -458,12 +486,9 @@ gk20a_ctrl_ioctl_gpu_characteristics(
gpu.per_device_identifier = g->per_device_identifier;
nvgpu_set_preemption_mode_flags(g, &gpu);
/* Default values for legacy mode (non MIG) */
gpu.gpu_instance_id = 0x0;
gpu.gr_sys_pipe_id = 0x0;
gpu.gr_instance_id = 0x0;
gpu.gpu_instance_id = gpu_instance->gpu_instance_id;
gpu.gr_sys_pipe_id = gpu_instance->gr_syspipe.gr_syspipe_id;
gpu.gr_instance_id = gpu_instance->gr_syspipe.gr_instance_id;
if (request->gpu_characteristics_buf_size > 0) {
size_t write_size = sizeof(gpu);
@@ -1783,7 +1808,8 @@ long gk20a_ctrl_dev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg
struct gk20a_ctrl_priv *priv = filp->private_data;
struct gk20a *g = priv->g;
u8 buf[NVGPU_GPU_IOCTL_MAX_ARG_SIZE];
struct nvgpu_gr_config *gr_config = nvgpu_gr_get_config_ptr(g);
u32 gpu_instance_id, gr_instance_id;
struct nvgpu_gr_config *gr_config;
#ifdef CONFIG_NVGPU_GRAPHICS
struct nvgpu_gpu_zcull_get_ctx_size_args *get_ctx_size_args;
struct nvgpu_gpu_zcull_get_info_args *get_info_args;
@@ -1820,6 +1846,14 @@ long gk20a_ctrl_dev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg
gk20a_idle(g);
}
gpu_instance_id = nvgpu_get_gpu_instance_id_from_cdev(g, priv->cdev);
nvgpu_assert(gpu_instance_id < g->mig.num_gpu_instances);
gr_instance_id = nvgpu_grmgr_get_gr_instance_id(g, gpu_instance_id);
nvgpu_assert(gr_instance_id < g->num_gr_instances);
gr_config = nvgpu_gr_get_gpu_instance_config_ptr(g, gpu_instance_id);
nvgpu_speculation_barrier();
switch (cmd) {
#ifdef CONFIG_NVGPU_GRAPHICS
@@ -1939,8 +1973,8 @@ long gk20a_ctrl_dev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg
break;
#endif /* CONFIG_NVGPU_GRAPHICS */
case NVGPU_GPU_IOCTL_GET_CHARACTERISTICS:
err = gk20a_ctrl_ioctl_gpu_characteristics(
g, (struct nvgpu_gpu_get_characteristics *)buf);
err = gk20a_ctrl_ioctl_gpu_characteristics(g, gpu_instance_id, gr_config,
(struct nvgpu_gpu_get_characteristics *)buf);
break;
case NVGPU_GPU_IOCTL_PREPARE_COMPRESSIBLE_READ:
err = gk20a_ctrl_prepare_compressible_read(g,