gpu: nvgpu: gv100: enable syncpt shim for nvlink

Get host1x node reference from c1_rp device tree node, and
enable syncpoints shim in case of nvlink.

JIRA EVLR-2441
JIRA EVLR-2585

Change-Id: Idbf1edf656557f2ed2d3bd27393c2f4d5d1ad75a
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1663360
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/pci.c b/drivers/gpu/nvgpu/common/linux/pci.c
index bb44efbc..3c7de4ff 100644
--- a/drivers/gpu/nvgpu/common/linux/pci.c
+++ b/drivers/gpu/nvgpu/common/linux/pci.c
@@ -20,6 +20,7 @@
 #include <linux/of_platform.h>
 #include <linux/of_address.h>
 
+#include <nvgpu/nvhost.h>
 #include <nvgpu/nvgpu_common.h>
 #include <nvgpu/kmem.h>
 #include <nvgpu/enabled.h>
@@ -316,6 +317,7 @@ static struct gk20a_platform nvgpu_pci_device[] = {
         .vbios_min_version = 0x88000126,
         .hardcode_sw_threshold = false,
         .run_preos = true,
+        .has_syncpoints = true,
         },
         { /* SKU250 */
         /* ptimer src frequency in hz */
@@ -350,6 +352,7 @@ static struct gk20a_platform nvgpu_pci_device[] = {
         .vbios_min_version = 0x1,
         .hardcode_sw_threshold = false,
         .run_preos = true,
+        .has_syncpoints = true,
         },
         { /* SKU 0x1e3f */
         /* ptimer src frequency in hz */
@@ -700,6 +703,17 @@ static int nvgpu_pci_probe(struct pci_dev *pdev,
                         nvgpu_err(g, "fatal error probing nvlink, bailing out");
                         goto err_free_irq;
                 }
+                /* Enable Semaphore SHIM on nvlink only for now. */
+                __nvgpu_set_enabled(g, NVGPU_SUPPORT_NVLINK, false);
+                g->has_syncpoints = false;
+        } else {
+                err = nvgpu_nvhost_syncpt_init(g);
+                if (err) {
+                        if (err != -ENOSYS) {
+                                nvgpu_err(g, "syncpt init failed");
+                                goto err_free_irq;
+                        }
+                }
         }
 
         g->mm.has_physical_mode = false;