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gpu: nvgpu: configure nvgpu lpwr with module parameters

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Support nvgpu lpwr configuration with module
parameter, setting for each lpwr feature
would be profiled with bit operation.

module parameter: lpwr_enable
┌───────┬───────┬───────────────────────────────────────────┐
│  Bit  │ Reset │ Description                               │
╞═══════╪═══════╪═══════════════════════════════════════════╡
│ 0:1   │ 0x0   │ BLCG enablement.                          │
│       │       │ 0b00, 0b01: default platform configuration│
│       │       │ 0b10: disable feature                     │
│       │       │ 0b11: enable feature                      │
├───────┼───────┼───────────────────────────────────────────┤
│ 2:3   │ 0x0   │ ELCG enablement                           │
│       │       │ 0b00, 0b01: default platform configuration│
│       │       │ 0b10: disable feature                     │
│       │       │ 0b11: enable feature                      │
├───────┼───────┼───────────────────────────────────────────┤
│ 4:5   │ 0x0   │ ELPG enablement.                          │
│       │       │ 0b00, 0b01: default platform configuration│
│       │       │ 0b10: disable feature                     │
│       │       │ 0b11: enable feature                      │
├───────┼───────┼───────────────────────────────────────────┤
│ 6:7   │ 0x0   │ FLCG enablement.                          │
│       │       │ 0b00, 0b01: default platform configuration│
│       │       │ 0b10: disable feature                     │
│       │       │ 0b11: enable feature                      │
├───────┼───────┼───────────────────────────────────────────┤
│ 8:9   │ 0x0   │ SLCG enalement.                           │
│       │       │ 0b00, 0b01: default platform configuration│
│       │       │ 0b10: disable feature                     │
│       │       │ 0b11: enable feature                      │
├───────┼───────┼───────────────────────────────────────────┤
│ 10:11 │ 0x0   │ AELPG enablement.                         │
│       │       │ 0b00, 0b01: default platform configuration│
│       │       │ 0b10: disable feature                     │
│       │       │ 0b11: enable feature                      │
├───────┼───────┼───────────────────────────────────────────┤
│ 12:13 │ 0x0   │ MSCG enablement.                          │
│       │       │ 0b00, 0b01: default platform configuration│
│       │       │ 0b10: disable feature                     │
│       │       │ 0b11: enable feature                      │
└───────┴───────┴───────────────────────────────────────────┘

Bug 4084478

Change-Id: I7f1e506fec3196d3b4f90006dc2f4162da6c4990
Signed-off-by: shaochunk <shaochunk@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2978579
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: Divya Singhatwaria <dsinghatwari@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
shaochunk
2023-09-12 11:51:19 +08:00
committed by mobile promotions
parent f2afbafcfd
commit d28dda7149
3 changed files with 47 additions and 0 deletions
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37
drivers/gpu/nvgpu/os/linux/driver_common.c
View File

@@ -45,8 +45,16 @@
#include "sysfs.h"
#include "ioctl.h"
#include "scale.h"
#include "driver_common.h"
#define EMC3D_DEFAULT_RATIO 750
#define NVGPU_BLCG_ENABLEMENT BIT(1)
#define NVGPU_ELCG_ENABLEMENT BIT(3)
#define NVGPU_ELPG_ENABLEMENT BIT(5)
#define NVGPU_FLCG_ENABLEMENT BIT(7)
#define NVGPU_SLCG_ENABLEMENT BIT(9)
#define NVGPU_AELPG_ENABLEMENT BIT(11)
#define NVGPU_MSCG_ENABLEMENT BIT(13)
void nvgpu_kernel_restart(void *cmd)
{
@@ -225,6 +233,35 @@ static void nvgpu_init_pm_vars(struct gk20a *g)
struct device *dev = dev_from_gk20a(g);
struct gk20a_platform *platform = dev_get_drvdata(dev);
/* Consider the power setting from module parameter */
platform->enable_blcg = nvgpu_lpwr_enable & NVGPU_BLCG_ENABLEMENT ?
nvgpu_lpwr_enable & (NVGPU_BLCG_ENABLEMENT >> 1) :
platform->enable_blcg;
platform->enable_elcg = nvgpu_lpwr_enable & NVGPU_ELCG_ENABLEMENT ?
nvgpu_lpwr_enable & (NVGPU_ELCG_ENABLEMENT >> 1) :
platform->enable_elcg;
platform->enable_elpg = nvgpu_lpwr_enable & NVGPU_ELPG_ENABLEMENT ?
nvgpu_lpwr_enable & (NVGPU_ELPG_ENABLEMENT >> 1) :
platform->enable_elpg;
platform->enable_flcg = nvgpu_lpwr_enable & NVGPU_FLCG_ENABLEMENT ?
nvgpu_lpwr_enable & (NVGPU_FLCG_ENABLEMENT >> 1) :
platform->enable_flcg;
platform->enable_slcg = nvgpu_lpwr_enable & NVGPU_SLCG_ENABLEMENT ?
nvgpu_lpwr_enable & (NVGPU_SLCG_ENABLEMENT >> 1) :
platform->enable_slcg;
platform->enable_aelpg = nvgpu_lpwr_enable & NVGPU_AELPG_ENABLEMENT ?
nvgpu_lpwr_enable & (NVGPU_AELPG_ENABLEMENT >> 1) :
platform->enable_aelpg;
platform->enable_mscg = nvgpu_lpwr_enable & NVGPU_MSCG_ENABLEMENT ?
nvgpu_lpwr_enable & (NVGPU_MSCG_ENABLEMENT >> 1) :
platform->enable_mscg;
/*
* Set up initial power settings. For non-slicon platforms, disable
* power features and for silicon platforms, read from platform data

2
drivers/gpu/nvgpu/os/linux/driver_common.h
View File

@@ -17,6 +17,8 @@
#ifndef NVGPU_LINUX_DRIVER_COMMON
#define NVGPU_LINUX_DRIVER_COMMON
extern int nvgpu_lpwr_enable;
struct gk20a;
int nvgpu_probe(struct gk20a *g,

8
drivers/gpu/nvgpu/os/linux/module.c
View File

@@ -115,6 +115,14 @@
#define CREATE_TRACE_POINTS
#include <nvgpu/trace.h>
int nvgpu_lpwr_enable;
module_param_named(lpwr_enable, nvgpu_lpwr_enable, int, 0400);
MODULE_PARM_DESC(lpwr_enable,
"Enable/Disable nvgpu low power features with module parameter.\n"
"Each feature corresponds to two bits.\n"
"Odd bit indicates triggering the configuraion or not,\n"
"even bit indicates enabling/disabling a lpwr feature.");
static int nvgpu_wait_for_idle(struct gk20a *g)
{
int wait_length = 150; /* 3 second overall max wait. */