gpu: nvgpu: move mss nvlink credit init to os specific code

The code uses ioremap, readl_relaxed/writel_relaxed, which only exists
on linux. So move them to linux folder.

Also fix build errors on qnx.

Jira VQRM-2344

Change-Id: Ide1176d0bf954a804187aa842a6bbfdecbdb0286
Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1698973
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/nvlink.c b/drivers/gpu/nvgpu/common/linux/nvlink.c
index f2faa682..5a2f4ded 100644
--- a/drivers/gpu/nvgpu/common/linux/nvlink.c
+++ b/drivers/gpu/nvgpu/common/linux/nvlink.c
@@ -539,3 +539,37 @@ free_ndev:
 #endif
 }
 
+void nvgpu_mss_nvlink_init_credits(struct gk20a *g)
+{
+                /* MSS_NVLINK_1_BASE */
+                void __iomem *soc1 = ioremap(0x01f20010, 4096);
+                /* MSS_NVLINK_2_BASE */
+                void __iomem *soc2 = ioremap(0x01f40010, 4096);
+                /* MSS_NVLINK_3_BASE */
+                void __iomem *soc3 = ioremap(0x01f60010, 4096);
+                /* MSS_NVLINK_4_BASE */
+                void __iomem *soc4 = ioremap(0x01f80010, 4096);
+                u32 val;
+
+                nvgpu_log(g, gpu_dbg_info, "init nvlink soc credits");
+
+                val = readl_relaxed(soc1);
+                writel_relaxed(val, soc1);
+                val = readl_relaxed(soc1 + 4);
+                writel_relaxed(val, soc1 + 4);
+
+                val = readl_relaxed(soc2);
+                writel_relaxed(val, soc2);
+                val = readl_relaxed(soc2 + 4);
+                writel_relaxed(val, soc2 + 4);
+
+                val = readl_relaxed(soc3);
+                writel_relaxed(val, soc3);
+                val = readl_relaxed(soc3 + 4);
+                writel_relaxed(val, soc3 + 4);
+
+                val = readl_relaxed(soc4);
+                writel_relaxed(val, soc4);
+                val = readl_relaxed(soc4 + 4);
+                writel_relaxed(val, soc4 + 4);
+}