gpu: nvgpu: vgpu: support clk-arb

1. Implement the following vgpu functions to support clk-arb:
- vgpu_clk_get_range() to return min and max freqs from
supported frequencies
- implement vgpu_clk_get_round_rate() which sets rounded
rate to input rate. Rounding is handled in RM Server
- modify vgpu_clk_get_freqs() to retrieve freq table in IVM
memory instead of copying the value in array as part of cmd
message.

2. Add support for clk-arb related HALs for vgpu.

3. support_clk_freq_controller is assigned true for vgpu
provided guest VM has the privilege to set clock frequency.

Bug 200422845
Bug 2363882
Jira EVLR-3254

Change-Id: I91fc392db381c5db1d52b19d45ec0481fdc27554
Signed-off-by: Aparna Das <aparnad@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1812379
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2 files changed, 5 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/include/nvgpu/vgpu/tegra_vgpu.h b/drivers/gpu/nvgpu/include/nvgpu/vgpu/tegra_vgpu.h
index f7a58c87..5ee50b18 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/vgpu/tegra_vgpu.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/vgpu/tegra_vgpu.h
@@ -519,6 +519,7 @@ struct tegra_vgpu_constants_params {
         u16 gpc_tpc_mask[TEGRA_VGPU_MAX_GPC_COUNT];
         u32 hwpm_ctx_size;
         u8 force_preempt_mode;
+        u8 can_set_clkrate;
         u32 default_timeslice_us;
         u32 preempt_ctx_size;
         u32 channel_base;
@@ -578,7 +579,6 @@ struct tegra_vgpu_perfbuf_mgt_params {
 
 struct tegra_vgpu_get_gpu_freq_table_params {
         u32 num_freqs;
-        u32 freqs[TEGRA_VGPU_GPU_FREQ_TABLE_SIZE]; /* in kHz */
 };
 
 struct tegra_vgpu_vsms_mapping_params {
diff --git a/drivers/gpu/nvgpu/include/nvgpu/vgpu/vgpu.h b/drivers/gpu/nvgpu/include/nvgpu/vgpu/vgpu.h
index 762bc229..15ab879e 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/vgpu/vgpu.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/vgpu/vgpu.h
@@ -26,6 +26,7 @@
 #include <nvgpu/types.h>
 #include <nvgpu/thread.h>
 #include <nvgpu/log.h>
+#include <nvgpu/lock.h>
 #include <nvgpu/vgpu/tegra_vgpu.h>
 
 struct device;
@@ -45,6 +46,9 @@ struct vgpu_priv_data {
         struct tegra_vgpu_constants_params constants;
         struct vgpu_ecc_stat *ecc_stats;
         int ecc_stats_count;
+        u32 num_freqs;
+        unsigned long *freqs;
+        struct nvgpu_mutex vgpu_clk_get_freq_lock;
 };
 
 struct vgpu_priv_data *vgpu_get_priv_data(struct gk20a *g);