gpu: nvgpu: Unify querying stream id

Stream ID for gp10b is retrieved directly from DT headers in common
code. Introduce instead a variable to store the stream ID and move the
query to platform_gp10b_tegra.c.

JIRA NVGPU-4

Change-Id: I123024e13e470283bb691883f8f963eb72c997d8
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1648013
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

5 files changed, 17 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/driver_common.c b/drivers/gpu/nvgpu/common/linux/driver_common.c
index f2373e00..b90574e0 100644
--- a/drivers/gpu/nvgpu/common/linux/driver_common.c
+++ b/drivers/gpu/nvgpu/common/linux/driver_common.c
@@ -170,6 +170,13 @@ static void nvgpu_init_vbios_vars(struct gk20a *g)
         g->vbios_min_version = platform->vbios_min_version;
 }
 
+static void  nvgpu_init_ltc_vars(struct gk20a *g)
+{
+        struct gk20a_platform *platform = dev_get_drvdata(dev_from_gk20a(g));
+
+        g->ltc_streamid = platform->ltc_streamid;
+}
+
 static void nvgpu_init_mm_vars(struct gk20a *g)
 {
         struct gk20a_platform *platform = dev_get_drvdata(dev_from_gk20a(g));
@@ -202,6 +209,7 @@ int nvgpu_probe(struct gk20a *g,
         nvgpu_init_timeslice(g);
         nvgpu_init_pm_vars(g);
         nvgpu_init_vbios_vars(g);
+        nvgpu_init_ltc_vars(g);
 
         /* Initialize the platform interface. */
         err = platform->probe(dev);
diff --git a/drivers/gpu/nvgpu/common/linux/platform_gk20a.h b/drivers/gpu/nvgpu/common/linux/platform_gk20a.h
index 9325eab7..b0c089e6 100644
--- a/drivers/gpu/nvgpu/common/linux/platform_gk20a.h
+++ b/drivers/gpu/nvgpu/common/linux/platform_gk20a.h
@@ -239,6 +239,9 @@ struct gk20a_platform {
         u32 ina3221_dcb_index;
         u32 ina3221_i2c_address;
         u32 ina3221_i2c_port;
+
+        /* stream id to use */
+        u32 ltc_streamid;
 };
 
 static inline struct gk20a_platform *gk20a_get_platform(
diff --git a/drivers/gpu/nvgpu/common/linux/platform_gp10b_tegra.c b/drivers/gpu/nvgpu/common/linux/platform_gp10b_tegra.c
index 8a964caf..00cbe48e 100644
--- a/drivers/gpu/nvgpu/common/linux/platform_gp10b_tegra.c
+++ b/drivers/gpu/nvgpu/common/linux/platform_gp10b_tegra.c
@@ -25,6 +25,8 @@
 #include <soc/tegra/tegra_bpmp.h>
 #include <soc/tegra/tegra_powergate.h>
 
+#include <dt-bindings/memory/tegra-swgroup.h>
+
 #include <nvgpu/kmem.h>
 #include <nvgpu/bug.h>
 #include <nvgpu/enabled.h>
@@ -417,6 +419,8 @@ struct gk20a_platform gp10b_tegra_platform = {
         .soc_name = "tegra18x",
 
         .unified_memory = true,
+
+        .ltc_streamid = TEGRA_SID_GPUB,
 };
 
 
diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index f187f730..8bddad11 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -1304,6 +1304,7 @@ struct gk20a {
         int irq_nonstall;
         u32 max_ltc_count;
         u32 ltc_count;
+        u32 ltc_streamid;
 
         struct gk20a_channel_worker {
                 struct nvgpu_thread poll_task;
diff --git a/drivers/gpu/nvgpu/gp10b/ltc_gp10b.c b/drivers/gpu/nvgpu/gp10b/ltc_gp10b.c
index 7735d1ae..d52a10ad 100644
--- a/drivers/gpu/nvgpu/gp10b/ltc_gp10b.c
+++ b/drivers/gpu/nvgpu/gp10b/ltc_gp10b.c
@@ -24,8 +24,6 @@
 
 #include <trace/events/gk20a.h>
 
-#include <dt-bindings/memory/tegra-swgroup.h>
-
 #include <nvgpu/ltc.h>
 #include <nvgpu/log.h>
 #include <nvgpu/enabled.h>
@@ -299,7 +297,7 @@ void gp10b_ltc_init_fs_state(struct gk20a *g)
         gm20b_ltc_init_fs_state(g);
 
         gk20a_writel(g, ltc_ltca_g_axi_pctrl_r(),
-                        ltc_ltca_g_axi_pctrl_user_sid_f(TEGRA_SID_GPUB));
+                        ltc_ltca_g_axi_pctrl_user_sid_f(g->ltc_streamid));
 
         /* Enable ECC interrupts */
         ltc_intr = gk20a_readl(g, ltc_ltcs_ltss_intr_r());