gpu: nvgpu: add placeholder for IPA to PA

Add __nvgpu_sgl_phys function that can be used to implement IPA
to PA translation in a subsequent change.
Adapt existing function prototypes to add pointer to gpu context,
as we will need to check if IPA to PA translation is needed.

JIRA EVLR-2442
Bug 200392719

Change-Id: I5a734c958c8277d1bf673c020dafb31263f142d6
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1673142
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
index 0def724d..5bd4dc57 100644
--- a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
@@ -867,6 +867,7 @@ static int gk20a_init_fifo_setup_sw(struct gk20a *g)
         struct fifo_gk20a *f = &g->fifo;
         unsigned int chid, i;
         int err = 0;
+        u64 userd_base;
 
         gk20a_dbg_fn("");
 
@@ -929,9 +930,9 @@ static int gk20a_init_fifo_setup_sw(struct gk20a *g)
         }
         gk20a_dbg(gpu_dbg_map, "userd gpu va = 0x%llx", f->userd.gpu_va);
 
+        userd_base = nvgpu_mem_get_addr(g, &f->userd);
         for (chid = 0; chid < f->num_channels; chid++) {
-                f->channel[chid].userd_iova =
-                        nvgpu_mem_get_addr(g, &f->userd) +
+                f->channel[chid].userd_iova = userd_base +
                         chid * f->userd_entry_size;
                 f->channel[chid].userd_gpu_va =
                         f->userd.gpu_va + chid * f->userd_entry_size;