gpu: nvgpu: Move FB MMU query to FB HAL

Move queries of FB MMU configuration to FB HAL. Also use g->ltc_count
instead of reading the number of LTCs from FB. These changes together
remove last direct uses of FB registers from GR.

JIRA NVGPU-714

Change-Id: I1b4b46fc2f636f5c1904e4174040a47a27948999
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1773076
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/fb_gm20b.c b/drivers/gpu/nvgpu/gm20b/fb_gm20b.c
index 2ca8d86c..37a7944b 100644
--- a/drivers/gpu/nvgpu/gm20b/fb_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/fb_gm20b.c
@@ -68,6 +68,26 @@ bool gm20b_fb_set_use_full_comp_tag_line(struct gk20a *g)
         return true;
 }
 
+u32 gm20b_fb_mmu_ctrl(struct gk20a *g)
+{
+        return gk20a_readl(g, fb_mmu_ctrl_r());
+}
+
+u32 gm20b_fb_mmu_debug_ctrl(struct gk20a *g)
+{
+        return gk20a_readl(g, fb_mmu_debug_ctrl_r());
+}
+
+u32 gm20b_fb_mmu_debug_wr(struct gk20a *g)
+{
+        return gk20a_readl(g, fb_mmu_debug_wr_r());
+}
+
+u32 gm20b_fb_mmu_debug_rd(struct gk20a *g)
+{
+        return gk20a_readl(g, fb_mmu_debug_rd_r());
+}
+
 unsigned int gm20b_fb_compression_page_size(struct gk20a *g)
 {
         return SZ_128K;