gpu: nvgpu: Add interface for privileged channel allocation

Added interface for privileged channel allocation to execute
the privileged method  (ex. CE phys mode transfer).

JIRA DNVGPU-53

Change-Id: I1606f8c9d10f29d5a10738b5110ce9f6a2bb428d
Signed-off-by: Lakshmanan M <lm@nvidia.com>
Reviewed-on: http://git-master/r/1169320
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

3 files changed, 20 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gp10b/fifo_gp10b.c b/drivers/gpu/nvgpu/gp10b/fifo_gp10b.c
index 0aa6e29e..349f25fc 100644
--- a/drivers/gpu/nvgpu/gp10b/fifo_gp10b.c
+++ b/drivers/gpu/nvgpu/gp10b/fifo_gp10b.c
@@ -132,6 +132,14 @@ static int channel_gp10b_setup_ramfc(struct channel_gk20a *c,
 
         gk20a_mem_wr32(g, mem, ram_fc_chid_w(), ram_fc_chid_id_f(c->hw_chid));
 
+        if (c->is_privileged_channel) {
+                /* Set privilege level for channel */
+                gk20a_mem_wr32(g, mem, ram_fc_config_w(),
+                        pbdma_config_auth_level_privileged_f());
+
+                gk20a_channel_setup_ramfc_for_privileged_channel(c);
+        }
+
         return channel_gp10b_commit_userd(c);
 }
 
diff --git a/drivers/gpu/nvgpu/gp10b/hw_pbdma_gp10b.h b/drivers/gpu/nvgpu/gp10b/hw_pbdma_gp10b.h
index 0caffb22..65aedccd 100644
--- a/drivers/gpu/nvgpu/gp10b/hw_pbdma_gp10b.h
+++ b/drivers/gpu/nvgpu/gp10b/hw_pbdma_gp10b.h
@@ -342,6 +342,14 @@ static inline u32 pbdma_userd_hi_addr_f(u32 v)
 {
         return (v & 0xff) << 0;
 }
+static inline u32 pbdma_config_r(u32 i)
+{
+        return 0x000400f4 + i*8192;
+}
+static inline u32 pbdma_config_auth_level_privileged_f(void)
+{
+        return 0x100;
+}
 static inline u32 pbdma_hce_ctrl_r(u32 i)
 {
         return 0x000400e4 + i*8192;
diff --git a/drivers/gpu/nvgpu/gp10b/hw_ram_gp10b.h b/drivers/gpu/nvgpu/gp10b/hw_ram_gp10b.h
index 55323579..89dfbc21 100644
--- a/drivers/gpu/nvgpu/gp10b/hw_ram_gp10b.h
+++ b/drivers/gpu/nvgpu/gp10b/hw_ram_gp10b.h
@@ -382,6 +382,10 @@ static inline u32 ram_fc_chid_id_w(void)
 {
         return 0;
 }
+static inline u32 ram_fc_config_w(void)
+{
+        return 61;
+}
 static inline u32 ram_fc_runlist_timeslice_w(void)
 {
         return 62;