gpu: nvgpu: MSCG support

- update gp106 pg engine init/list/features HALs
  to support MS engine
- Added defines & interface for lpwr tables read  from vbios.
- lpwr module which reads idx/gr/ms table from vbios to
  map rppg/mscg support with respective p-state
- lpwr module public functions to control lpwr
  features enable/disable mscg/rppg & mclk-change
  request whenever change in mclk-change parameters
- lpwr public functions to know rppg/mscg support for
  requested pstate,
- added mutex t prevent PG transition while arbiter
  executes pstate transition
- nvgpu_clk_arb_get_current_pstate() of clk arbiter to
  get current pstate

JIRA DNVGPU-71

Change-Id: Ifcd640cc19ef630be1e2a9ba07ec84023d8202a0
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: http://git-master/r/1247553
(cherry picked from commit 8a441dea2410e1b5196ef24e56a7768b6980e46b)
Reviewed-on: http://git-master/r/1270989
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 92 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/lpwr/lpwr.h b/drivers/gpu/nvgpu/lpwr/lpwr.h
new file mode 100644
index 00000000..6b3259df
--- /dev/null
+++ b/drivers/gpu/nvgpu/lpwr/lpwr.h
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2016, 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 _MSCG_H_
+#define _MSCG_H_
+
+#define MAX_SWASR_MCLK_FREQ_WITHOUT_WR_TRAINING_MAXWELL_MHZ   540
+
+#define NV_PMU_PG_PARAM_MCLK_CHANGE_MS_SWASR_ENABLED BIT(0x1)
+#define NV_PMU_PG_PARAM_MCLK_CHANGE_GDDR5_WR_TRAINING_ENABLED BIT(0x3)
+
+#define LPWR_ENTRY_COUNT_MAX 0x06
+
+#define LPWR_VBIOS_IDX_ENTRY_COUNT_MAX (LPWR_ENTRY_COUNT_MAX)
+
+#define LPWR_VBIOS_IDX_ENTRY_RSVD \
+        (LPWR_VBIOS_IDX_ENTRY_COUNT_MAX - 1)
+
+#define LPWR_VBIOS_BASE_SAMPLING_PERIOD_DEFAULT    (500)
+
+struct nvgpu_lpwr_bios_idx_entry {
+        u8 pcie_idx;
+        u8 gr_idx;
+        u8 ms_idx;
+        u8 di_idx;
+        u8 gc6_idx;
+};
+
+struct nvgpu_lpwr_bios_idx_data {
+        u16 base_sampling_period;
+        struct nvgpu_lpwr_bios_idx_entry entry[LPWR_VBIOS_IDX_ENTRY_COUNT_MAX];
+};
+
+#define LPWR_VBIOS_MS_ENTRY_COUNT_MAX (LPWR_ENTRY_COUNT_MAX)
+
+struct nvgpu_lpwr_bios_ms_entry {
+        bool ms_enabled;
+        u32 feature_mask;
+        u32 asr_efficiency_thresholdl;
+        u16 dynamic_current_logic;
+        u16 dynamic_current_sram;
+};
+
+struct nvgpu_lpwr_bios_ms_data {
+        u8 default_entry_idx;
+        u32 idle_threshold_us;
+        struct nvgpu_lpwr_bios_ms_entry entry[LPWR_VBIOS_MS_ENTRY_COUNT_MAX];
+};
+
+#define LPWR_VBIOS_GR_ENTRY_COUNT_MAX (LPWR_ENTRY_COUNT_MAX)
+
+struct nvgpu_lpwr_bios_gr_entry {
+        bool  gr_enabled;
+        u32   feature_mask;
+};
+
+struct nvgpu_lpwr_bios_gr_data {
+        u8 default_entry_idx;
+        u32 idle_threshold_us;
+        u8 adaptive_gr_multiplier;
+        struct nvgpu_lpwr_bios_gr_entry  entry[LPWR_VBIOS_GR_ENTRY_COUNT_MAX];
+};
+
+struct nvgpu_lpwr_bios_data {
+        struct nvgpu_lpwr_bios_idx_data idx;
+        struct nvgpu_lpwr_bios_ms_data ms;
+        struct nvgpu_lpwr_bios_gr_data gr;
+};
+
+struct obj_lwpr {
+        struct nvgpu_lpwr_bios_data lwpr_bios_data;
+        u32 mclk_change_cache;
+};
+
+u32 nvgpu_lpwr_pg_setup(struct gk20a *g);
+int nvgpu_lwpr_mclk_change(struct gk20a *g, u32 pstate);
+int nvgpu_lpwr_enable_pg(struct gk20a *g, bool pstate_lock);
+int nvgpu_lpwr_disable_pg(struct gk20a *g, bool pstate_lock);
+u32 nvgpu_lpwr_is_mscg_supported(struct gk20a *g, u32 pstate_num);
+u32 nvgpu_lpwr_is_rppg_supported(struct gk20a *g, u32 pstate_num);
+u32 nvgpu_lpwr_post_init(struct gk20a *g);
+
+#endif