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gpu: nvgpu: ga10b: fix fetching of FBP_L2 FS mask

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On all chips except ga10b, the number of ROP, L2 units per FBP
were in sync, hence, their FS masks could be represented by a single
fuse register NV_FUSE_STATUS_OPT_ROP_L2_FBP. However, on ga10b, the ROP
unit was moved out from FBP to GPC and it no longer matches the number
of L2 units, so the previous fuse register was broken into two -
NV_FUSE_CTRL_OPT_LTC_FBP, NV_FUSE_CTRL_OPT_ROP_GPC.

At present, the driver reads the NV_FUSE_CTRL_OPT_ROP_GPC register
and reports incorrect L2 mask. Introduce HAL function
ga10b_fuse_status_opt_l2_fbp to fix this.

In addition, rename fields and functions to exclusively fetch L2 masks,
this should help accommadate ga10b and future chips in which L2 and ROP units
are not in same. As part of this, the following functions and
fields have been renamed.
- nvgpu_fbp_get_rop_l2_en_mask => nvgpu_fbp_get_l2_en_mask
- fuse.fuse_status_opt_rop_l2_fbp => fuse.fuse_status_opt_l2_fbp
- nvgpu_fbp.fbp_rop_l2_en_mask => nvgpu_fbp.fbp_l2_en_mask

The HAL ga10b_fuse_status_opt_rop_gpc is removed as rop mask is not
used anywhere in the driver nor exposed to userspace.

Bug 200737717
Bug 200747149

Change-Id: If40fe7ecd1f47c23f7683369a60d8dd686590ca4
Signed-off-by: Antony Clince Alex <aalex@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2551998
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Antony Clince Alex
2021-06-30 13:25:55 +00:00
committed by mobile promotions
parent d8fe976dc2
commit f51a43b579
27 changed files with 66 additions and 67 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/nvgpu/os/linux/ioctl_ctrl.c
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@@ -734,8 +734,8 @@ static int gk20a_ctrl_get_fbp_l2_masks(
int err = 0;
const u32 fbp_l2_mask_size = sizeof(u32) *
nvgpu_grmgr_get_max_fbps_count(g);
u32 *fbp_rop_l2_en_mask =
nvgpu_grmgr_get_fbp_rop_l2_en_mask(g, gpu_instance_id);
u32 *fbp_l2_en_mask =
nvgpu_grmgr_get_fbp_l2_en_mask(g, gpu_instance_id);
if (args->mask_buf_size > 0) {
size_t write_size = fbp_l2_mask_size;
@@ -746,7 +746,7 @@ static int gk20a_ctrl_get_fbp_l2_masks(
err = copy_to_user((void __user *)(uintptr_t)
args->mask_buf_addr,
fbp_rop_l2_en_mask, write_size);
fbp_l2_en_mask, write_size);
}
if (err == 0)