gpu: nvgpu: Prepare for per-GPU CDE program numbers

Add gpu_ops for CDE, and add get_program_numbers function pointer for
determining horizontal and vertical CDE swizzler programs. This allows
different GPUs to have their own specific requirements for choosing
the CDE firmware programs.

Bug 1604102

Change-Id: Ib37c13abb017c8eb1c32adc8cbc6b5984488222e
Signed-off-by: Sami Kiminki <skiminki@nvidia.com>
Reviewed-on: http://git-master/r/784899
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

3 files changed, 78 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/cde_gm20b.c b/drivers/gpu/nvgpu/gm20b/cde_gm20b.c
new file mode 100644
index 00000000..d23ba8c5
--- /dev/null
+++ b/drivers/gpu/nvgpu/gm20b/cde_gm20b.c
@@ -0,0 +1,53 @@
+/*
+ * GM20B CDE
+ *
+ * Copyright (c) 2015, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#include "gk20a/gk20a.h"
+#include "cde_gm20b.h"
+
+enum programs {
+        PROG_HPASS              = 0,
+        PROG_VPASS_LARGE        = 1,
+        PROG_VPASS_SMALL        = 2,
+        PROG_HPASS_DEBUG        = 3,
+        PROG_VPASS_LARGE_DEBUG  = 4,
+        PROG_VPASS_SMALL_DEBUG  = 5,
+        PROG_PASSTHROUGH        = 6,
+};
+
+static void gm20b_cde_get_program_numbers(struct gk20a *g,
+                                          u32 block_height_log2,
+                                          int *hprog_out, int *vprog_out)
+{
+        int hprog = PROG_HPASS;
+        int vprog = (block_height_log2 >= 2) ?
+                PROG_VPASS_LARGE : PROG_VPASS_SMALL;
+        if (g->cde_app.shader_parameter == 1) {
+                hprog = PROG_PASSTHROUGH;
+                vprog = PROG_PASSTHROUGH;
+        } else if (g->cde_app.shader_parameter == 2) {
+                hprog = PROG_HPASS_DEBUG;
+                vprog = (block_height_log2 >= 2) ?
+                        PROG_VPASS_LARGE_DEBUG :
+                        PROG_VPASS_SMALL_DEBUG;
+        }
+
+        *hprog_out = hprog;
+        *vprog_out = vprog;
+}
+
+void gm20b_init_cde_ops(struct gpu_ops *gops)
+{
+        gops->cde.get_program_numbers = gm20b_cde_get_program_numbers;
+}
diff --git a/drivers/gpu/nvgpu/gm20b/cde_gm20b.h b/drivers/gpu/nvgpu/gm20b/cde_gm20b.h
new file mode 100644
index 00000000..66e303f5
--- /dev/null
+++ b/drivers/gpu/nvgpu/gm20b/cde_gm20b.h
@@ -0,0 +1,23 @@
+/*
+ * GM20B CDE
+ *
+ * Copyright (c) 2015, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef _NVHOST_GM20B_CDE
+#define _NVHOST_GM20B_CDE
+
+struct gpu_ops;
+
+void gm20b_init_cde_ops(struct gpu_ops *gops);
+
+#endif
diff --git a/drivers/gpu/nvgpu/gm20b/hal_gm20b.c b/drivers/gpu/nvgpu/gm20b/hal_gm20b.c
index 1ab65836..e32f8943 100644
--- a/drivers/gpu/nvgpu/gm20b/hal_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/hal_gm20b.c
@@ -32,6 +32,7 @@
 #include <linux/tegra-fuse.h>
 #include "regops_gm20b.h"
 #include "debug_gm20b.h"
+#include "cde_gm20b.h"
 
 #define FUSE_OPT_PRIV_SEC_DIS_0 0x264
 #define PRIV_SECURITY_DISABLE 0x01
@@ -133,6 +134,7 @@ int gm20b_init_hal(struct gk20a *g)
         gm20b_init_clk_ops(gops);
         gm20b_init_regops(gops);
         gm20b_init_debug_ops(gops);
+        gm20b_init_cde_ops(gops);
         gops->name = "gm20b";
 
         c->twod_class = FERMI_TWOD_A;