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gpu: nvgpu: tu104: implement l2 sector promotion

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Introduce new HAL gops_ltc.set_l2_sector_promotion to configure L2
sector promotion policy. The follow three promotion settings are support:
- NVGPU_GPU_IOCTL_TSG_L2_SECTOR_PROMOTE_FLAG_NONE
- NVGPU_GPU_IOCTL_TSG_L2_SECTOR_PROMOTE_FLAG_64B
- NVGPU_GPU_IOCTL_TSG_L2_SECTOR_PROMOTE_FLAG_128B

Add ioctl "NVGPU_TSG_IOCTL_SET_L2_SECTOR_PROMOTION" to the gpu tsg node
to support l2 sector promotion. On chips which do not support sector
promotion, the ioctl returns 0.

Bug 200656177

Change-Id: Iad835a5c954d3b10da436cfafb388aaaa04f44c7
Signed-off-by: Antony Clince Alex <aalex@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2460553
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Antony Clince Alex
2020-12-16 12:09:03 +05:30
committed by mobile promotions
parent 5517e14e57
commit 95bfa039f5
8 changed files with 246 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

83
drivers/gpu/nvgpu/os/linux/ioctl_tsg.c
View File

@@ -34,6 +34,7 @@
#include <nvgpu/fifo.h>
#include <nvgpu/nvgpu_init.h>
#include <nvgpu/grmgr.h>
#include <nvgpu/ltc.h>
#include "platform_gk20a.h"
#include "ioctl_tsg.h"
@@ -681,6 +682,67 @@ static int nvgpu_gpu_ioctl_get_l2_max_ways_evict_last(
return err;
}
static u32 nvgpu_translate_l2_sector_promotion_flag(struct gk20a *g, u32 flag)
{
u32 promotion_flag = NVGPU_L2_SECTOR_PROMOTE_FLAG_INVALID;
switch (flag) {
case NVGPU_GPU_IOCTL_TSG_L2_SECTOR_PROMOTE_FLAG_NONE:
promotion_flag = NVGPU_L2_SECTOR_PROMOTE_FLAG_NONE;
break;
case NVGPU_GPU_IOCTL_TSG_L2_SECTOR_PROMOTE_FLAG_64B:
promotion_flag = NVGPU_L2_SECTOR_PROMOTE_FLAG_64B;
break;
case NVGPU_GPU_IOCTL_TSG_L2_SECTOR_PROMOTE_FLAG_128B:
promotion_flag = NVGPU_L2_SECTOR_PROMOTE_FLAG_128B;
break;
default:
nvgpu_err(g, "invalid sector promotion flag(%d)",
flag);
break;
}
return promotion_flag;
}
static int nvgpu_gpu_ioctl_set_l2_sector_promotion(struct gk20a *g,
struct nvgpu_tsg *tsg,
struct nvgpu_tsg_set_l2_sector_promotion_args *args)
{
u32 promotion_flag = 0U;
int err = 0;
/*
* L2 sector promotion is a perf feature so return silently without
* error if not supported.
*/
if (g->ops.ltc.set_l2_sector_promotion == NULL) {
return 0;
}
promotion_flag =
nvgpu_translate_l2_sector_promotion_flag(g,
args->promotion_flag);
if (promotion_flag ==
NVGPU_L2_SECTOR_PROMOTE_FLAG_INVALID) {
return -EINVAL;
}
err = gk20a_busy(g);
if (err) {
nvgpu_err(g, "failed to power on gpu");
return err;
}
err = g->ops.ltc.set_l2_sector_promotion(g, tsg,
promotion_flag);
gk20a_idle(g);
return err;
}
long nvgpu_ioctl_tsg_dev_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg)
{
@@ -826,15 +888,36 @@ long nvgpu_ioctl_tsg_dev_ioctl(struct file *filp, unsigned int cmd,
case NVGPU_TSG_IOCTL_SET_L2_MAX_WAYS_EVICT_LAST:
{
err = gk20a_busy(g);
if (err) {
nvgpu_err(g,
"failed to power on gpu for ioctl cmd: 0x%x", cmd);
break;
}
err = nvgpu_gpu_ioctl_set_l2_max_ways_evict_last(g, tsg,
(struct nvgpu_tsg_l2_max_ways_evict_last_args *)buf);
gk20a_idle(g);
break;
}
case NVGPU_TSG_IOCTL_GET_L2_MAX_WAYS_EVICT_LAST:
{
err = gk20a_busy(g);
if (err) {
nvgpu_err(g,
"failed to power on gpu for ioctl cmd: 0x%x", cmd);
break;
}
err = nvgpu_gpu_ioctl_get_l2_max_ways_evict_last(g, tsg,
(struct nvgpu_tsg_l2_max_ways_evict_last_args *)buf);
gk20a_idle(g);
break;
}
case NVGPU_TSG_IOCTL_SET_L2_SECTOR_PROMOTION:
{
err = nvgpu_gpu_ioctl_set_l2_sector_promotion(g, tsg,
(struct nvgpu_tsg_set_l2_sector_promotion_args *)buf);
break;
}