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gpu: nvgpu: add supported preemptions to gpu characteristics

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Add below flag fields to gpu characteristics to indicate
supported and default preemption modes on platform for
graphics and compute

__u32 graphics_preemption_mode_flags;
__u32 compute_preemption_mode_flags;
__u32 default_graphics_preempt_mode;
__u32 default_compute_preempt_mode;

Add struct nvgpu_preemption_modes_rec to struct gr_gk20a
to store these values locally

Use platform specific get_preemption_mode_flags() to
get the flags and define gk20a/gm20b specific
get_preemption_mode_flags() API

Bug 1646259

Change-Id: I80193c0d988dc93bd96585f9aa631fd817f4dfa3
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1133595
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Deepak Nibade
2016-04-27 19:02:43 +05:30
committed by Terje Bergstrom
parent d868b65441
commit 771f742703
6 changed files with 64 additions and 0 deletions
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11
drivers/gpu/nvgpu/gk20a/gk20a.c
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@@ -2142,6 +2142,17 @@ int gk20a_init_gpu_characteristics(struct gk20a *g)
if (platform->clk_round_rate)
gpu->max_freq = platform->clk_round_rate(g->dev, UINT_MAX);
g->ops.gr.get_preemption_mode_flags(g, &g->gr.preemption_mode_rec);
gpu->graphics_preemption_mode_flags =
g->gr.preemption_mode_rec.graphics_preemption_mode_flags;
gpu->compute_preemption_mode_flags =
g->gr.preemption_mode_rec.compute_preemption_mode_flags;
gpu->default_graphics_preempt_mode =
g->gr.preemption_mode_rec.default_graphics_preempt_mode;
gpu->default_compute_preempt_mode =
g->gr.preemption_mode_rec.default_compute_preempt_mode;
return 0;
}