gpu: nvgpu: Add bus HAL

Add bus HAL and move all bus related hardware sequencing to that file:
BAR1 binding, timer access, and interrupt handling.

Change-Id: Ibc5f5797dc338de10749b446a7bdbcae600fecb4
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1323353
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 0 insertions, 34 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/mm_gm20b.c b/drivers/gpu/nvgpu/gm20b/mm_gm20b.c
index 18f9eec1..949a5c5d 100644
--- a/drivers/gpu/nvgpu/gm20b/mm_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/mm_gm20b.c
@@ -13,17 +13,12 @@
  * more details.
  */
 
-#include <linux/delay.h>
-
 #include "gk20a/gk20a.h"
 
 #include "mm_gm20b.h"
 
-#include <nvgpu/timers.h>
-
 #include <nvgpu/hw/gm20b/hw_gmmu_gm20b.h>
 #include <nvgpu/hw/gm20b/hw_ram_gm20b.h>
-#include <nvgpu/hw/gm20b/hw_bus_gm20b.h>
 
 static void gm20b_mm_set_big_page_size(struct gk20a *g,
                                 struct mem_desc *mem, int size)
@@ -55,34 +50,6 @@ static bool gm20b_mm_support_sparse(struct gk20a *g)
         return true;
 }
 
-static int gm20b_mm_bar1_bind(struct gk20a *g, struct mem_desc *bar1_inst)
-{
-        int retry = 1000;
-        u64 iova = gk20a_mm_inst_block_addr(g, bar1_inst);
-        u32 ptr_v = (u32)(iova >> bar1_instance_block_shift_gk20a());
-
-        gk20a_dbg_info("bar1 inst block ptr: 0x%08x", ptr_v);
-
-        gk20a_writel(g, bus_bar1_block_r(),
-                     gk20a_aperture_mask(g, bar1_inst,
-                       bus_bar1_block_target_sys_mem_ncoh_f(),
-                       bus_bar1_block_target_vid_mem_f()) |
-                     bus_bar1_block_mode_virtual_f() |
-                     bus_bar1_block_ptr_f(ptr_v));
-        do {
-                u32 val = gk20a_readl(g, bus_bind_status_r());
-                u32 pending = bus_bind_status_bar1_pending_v(val);
-                u32 outstanding = bus_bind_status_bar1_outstanding_v(val);
-                if (!pending && !outstanding)
-                        break;
-
-                udelay(5);
-                retry--;
-        } while (retry >= 0 || !tegra_platform_is_silicon());
-
-        return retry ? -EINVAL : 0;
-}
-
 static bool gm20b_mm_is_bar1_supported(struct gk20a *g)
 {
         return true;
@@ -107,7 +74,6 @@ void gm20b_init_mm(struct gpu_ops *gops)
         gops->mm.get_mmu_levels = gk20a_mm_get_mmu_levels;
         gops->mm.init_pdb = gk20a_mm_init_pdb;
         gops->mm.init_mm_setup_hw = gk20a_init_mm_setup_hw;
-        gops->mm.bar1_bind = gm20b_mm_bar1_bind;
         gops->mm.is_bar1_supported = gm20b_mm_is_bar1_supported;
         gops->mm.init_inst_block = gk20a_init_inst_block;
         gops->mm.mmu_fault_pending = gk20a_fifo_mmu_fault_pending;