gpu: nvgpu: Use GPU's own fuse registers

Read fuse values from GPU's own fuse registers instead of Tegra fuse
registers whenever possible. This reduces the number of dependencies
to Linux fuse code.

Some fuses do not have a corresponding register in GPU, so they're
left as is.

Change-Id: Id9f2f4da897f3e20b20c300a67f705e3fa5ba35a
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1318278
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>

3 files changed, 7 insertions, 18 deletions

diff --git a/drivers/gpu/nvgpu/gp10b/gp10b_sysfs.h b/drivers/gpu/nvgpu/gp10b/gp10b_sysfs.h
index 786a3bb0..f56ccfc7 100644
--- a/drivers/gpu/nvgpu/gp10b/gp10b_sysfs.h
+++ b/drivers/gpu/nvgpu/gp10b/gp10b_sysfs.h
@@ -16,13 +16,6 @@
 #ifndef _GP10B_SYSFS_H_
 #define _GP10B_SYSFS_H_
 
-#include <linux/version.h>
-
-/*ECC Fuse*/
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 4, 0)
-#define FUSE_OPT_ECC_EN  0x358
-#endif
-
 void gp10b_create_sysfs(struct device *dev);
 void gp10b_remove_sysfs(struct device *dev);
 
diff --git a/drivers/gpu/nvgpu/gp10b/gr_gp10b.c b/drivers/gpu/nvgpu/gp10b/gr_gp10b.c
index d084d5dc..96919d2e 100644
--- a/drivers/gpu/nvgpu/gp10b/gr_gp10b.c
+++ b/drivers/gpu/nvgpu/gp10b/gr_gp10b.c
@@ -36,6 +36,7 @@
 #include <nvgpu/hw/gp10b/hw_fifo_gp10b.h>
 #include <nvgpu/hw/gp10b/hw_ctxsw_prog_gp10b.h>
 #include <nvgpu/hw/gp10b/hw_mc_gp10b.h>
+#include <nvgpu/hw/gp10b/hw_fuse_gp10b.h>
 
 #define NVGPU_GFXP_WFI_TIMEOUT_US       100LL
 
@@ -1948,7 +1949,7 @@ static u32 get_ecc_override_val(struct gk20a *g)
 {
         u32 val;
 
-        tegra_fuse_readl(FUSE_OPT_ECC_EN, &val);
+        val = gk20a_readl(g, fuse_opt_ecc_en_r());
         if (val)
                 return gk20a_readl(g, gr_fecs_feature_override_ecc_r());
 
diff --git a/drivers/gpu/nvgpu/gp10b/hal_gp10b.c b/drivers/gpu/nvgpu/gp10b/hal_gp10b.c
index 5fa1ec85..b57fcb5f 100644
--- a/drivers/gpu/nvgpu/gp10b/hal_gp10b.c
+++ b/drivers/gpu/nvgpu/gp10b/hal_gp10b.c
@@ -17,7 +17,6 @@
 #include <linux/printk.h>
 #include <linux/version.h>
 #include <linux/types.h>
-#include <soc/tegra/fuse.h>
 
 #include "gk20a/gk20a.h"
 #include "gk20a/dbg_gpu_gk20a.h"
@@ -46,11 +45,7 @@
 #include "gp10b.h"
 
 #include <nvgpu/hw/gp10b/hw_proj_gp10b.h>
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 4, 0)
-#define FUSE_OPT_PRIV_SEC_EN_0 0x264
-#endif
-#define PRIV_SECURITY_ENABLED 0x01
+#include <nvgpu/hw/gp10b/hw_fuse_gp10b.h>
 
 static struct gpu_ops gp10b_ops = {
         .clock_gating = {
@@ -205,8 +200,8 @@ int gp10b_init_hal(struct gk20a *g)
                 gops->privsecurity = 0;
                 gops->securegpccs = 0;
         } else {
-                tegra_fuse_readl(FUSE_OPT_PRIV_SEC_EN_0, &val);
-                if (val & PRIV_SECURITY_ENABLED) {
+                val = gk20a_readl(g, fuse_opt_priv_sec_en_r());
+                if (val) {
                         gops->privsecurity = 1;
                         gops->securegpccs =1;
                 } else {
@@ -221,8 +216,8 @@ int gp10b_init_hal(struct gk20a *g)
                 gops->privsecurity = 0;
                 gops->securegpccs = 0;
         } else {
-                tegra_fuse_readl(FUSE_OPT_PRIV_SEC_EN_0, &val);
-                if (val & PRIV_SECURITY_ENABLED) {
+                val = gk20a_readl(g, fuse_opt_priv_sec_en_r());
+                if (val) {
                         gk20a_dbg_info("priv security is not supported but enabled");
                         gops->privsecurity = 1;
                         gops->securegpccs =1;