gpu: nvgpu: get bios perf and clk table ptr

Implement support for reading perf and clk tables from VBIOS.

JIRA DNVGPU-83

Change-Id: I095fea08479161362e4c2ffa7500ee6a57d6d447
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: http://git-master/r/1202602
(cherry picked from commit fb7c7356f131a198bd655a25fc6ff17067477e1b)
Reviewed-on: http://git-master/r/1217299
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 48 insertions, 7 deletions

diff --git a/drivers/gpu/nvgpu/gm206/bios_gm206.c b/drivers/gpu/nvgpu/gm206/bios_gm206.c
index 212fae62..7159ef83 100644
--- a/drivers/gpu/nvgpu/gm206/bios_gm206.c
+++ b/drivers/gpu/nvgpu/gm206/bios_gm206.c
@@ -21,6 +21,7 @@
 #include "hw_mc_gm206.h"
 #include "hw_xve_gm206.h"
 #include "hw_top_gm206.h"
+#include "bios_gm206.h"
 
 #define BIT_HEADER_ID 0xb8ff
 #define BIT_HEADER_SIGNATURE 0x00544942
@@ -54,15 +55,10 @@ struct bit {
         u8 header_checksum;
 } __packed;
 
-struct bit_token {
-        u8 token_id;
-        u8 data_version;
-        u16 data_size;
-        u16 data_ptr;
-} __packed;
-
 #define TOKEN_ID_NVINIT_PTRS 0x49
 #define TOKEN_ID_FALCON_DATA 0x70
+#define TOKEN_ID_PERF_PTRS 0x50
+#define TOKEN_ID_CLOCK_PTRS 0x43
 
 struct nvinit_ptrs {
         u16 initscript_table_ptr;
@@ -423,6 +419,42 @@ static void gm206_bios_parse_falcon_data_v2(struct gk20a *g, int offset)
                           "could not parse falcon ucode table");
 }
 
+static void *gm206_bios_get_perf_table_ptrs(struct gk20a *g,
+                struct bit_token *ptoken, u8 table_id)
+{
+        u32 perf_table_id_offset = 0;
+        u8 *perf_table_ptr = NULL;
+
+        if (ptoken != NULL &&
+                table_id < (ptoken->data_size/sizeof(u32))) {
+
+                perf_table_id_offset = *((u32 *)&g->bios.data[
+                                ptoken->data_ptr +
+                                (table_id * PERF_PTRS_WIDTH)]);
+
+                gk20a_dbg_info("Perf_Tbl_ID-offset 0x%x Tbl_ID_Ptr-offset- 0x%x",
+                                        (ptoken->data_ptr +
+                                        (table_id * PERF_PTRS_WIDTH)),
+                                        perf_table_id_offset);
+
+                if (perf_table_id_offset != 0) {
+                        /* check is perf_table_id_offset is > 64k */
+                        if (perf_table_id_offset & ~0xFFFF)
+                                perf_table_ptr =
+                                        &g->bios.data[g->bios.expansion_rom_offset +
+                                                perf_table_id_offset];
+                        else
+                                perf_table_ptr =
+                                        &g->bios.data[perf_table_id_offset];
+                } else
+                        gk20a_warn(g->dev, "PERF TABLE ID %d is NULL",
+                                        table_id);
+        } else
+                gk20a_warn(g->dev, "INVALID PERF TABLE ID - %d ", table_id);
+
+        return (void *)perf_table_ptr;
+}
+
 static void gm206_bios_parse_bit(struct gk20a *g, int offset)
 {
         struct bit bit;
@@ -453,6 +485,14 @@ static void gm206_bios_parse_bit(struct gk20a *g, int offset)
                                 gm206_bios_parse_falcon_data_v2(g,
                                                 bit_token.data_ptr);
                         break;
+                case TOKEN_ID_PERF_PTRS:
+                        g->bios.perf_token =
+                                (struct bit_token *)&g->bios.data[offset];
+                        break;
+                case TOKEN_ID_CLOCK_PTRS:
+                        g->bios.clock_token =
+                                (struct bit_token *)&g->bios.data[offset];
+                        break;
                 default:
                         break;
                 }
@@ -715,4 +755,5 @@ static int gm206_bios_init(struct gk20a *g)
 void gm206_init_bios(struct gpu_ops *gops)
 {
         gops->bios.init = gm206_bios_init;
+        gops->bios.get_perf_table_ptrs = gm206_bios_get_perf_table_ptrs;
 }