gpu: nvgpu: Move semaphore impl to nvgpu_mem

Use struct nvgpu_mem for DMA allocations (and the corresponding
nvgpu_dma_alloc_sys()) instead of custom rolled code. This migrates
away from using linux scatter gather tables directly. Instead this
is hidden in the nvgpu_mem struct. With this change the semaphore.c
code no longer has any direct Linux dependencies.

JIRA NVGPU-12
JIRA NVGPU-30

Change-Id: I92167c98aac9b413ae87496744dcee051cd60207
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1464081
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
index b509c5c4..3fb35e94 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/channel_sync_gk20a.c
@@ -576,16 +576,16 @@ static void add_sema_cmd(struct gk20a *g, struct channel_gk20a *c,
         }
 
         if (acquire)
-                gpu_sema_verbose_dbg("(A) c=%d ACQ_GE %-4u owner=%-3d"
+                gpu_sema_verbose_dbg(g, "(A) c=%d ACQ_GE %-4u owner=%-3d"
                                      "va=0x%llx cmd_mem=0x%llx b=0x%llx off=%u",
                                      ch, nvgpu_semaphore_get_value(s),
                                      s->hw_sema->ch->hw_chid, va, cmd->gva,
                                      cmd->mem->gpu_va, ob);
         else
-                gpu_sema_verbose_dbg("(R) c=%d INCR %u (%u) va=0x%llx "
+                gpu_sema_verbose_dbg(g, "(R) c=%d INCR %u (%u) va=0x%llx "
                                      "cmd_mem=0x%llx b=0x%llx off=%u",
                                      ch, nvgpu_semaphore_get_value(s),
-                                     readl(s->hw_sema->value), va, cmd->gva,
+                                     nvgpu_semaphore_read(s), va, cmd->gva,
                                      cmd->mem->gpu_va, ob);
 }