gpu: nvgpu: Introduce queries for big page sizes

Introduce query functions for default big page size and available
big page sizes. Move initialization of GPU characteristics big
page sizes to the GPU characteristics query function.

JIRA NVGPU-259

Change-Id: Ie66cc2fbfcd88205593056f8d5010ac2539c8bc2
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1593685
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/ioctl_ctrl.c b/drivers/gpu/nvgpu/common/linux/ioctl_ctrl.c
index d3961f79..02dedc9f 100644
--- a/drivers/gpu/nvgpu/common/linux/ioctl_ctrl.c
+++ b/drivers/gpu/nvgpu/common/linux/ioctl_ctrl.c
@@ -211,6 +211,11 @@ gk20a_ctrl_ioctl_gpu_characteristics(
         pgpu->vbios_version = g->bios.vbios_version;
         pgpu->vbios_oem_version = g->bios.vbios_oem_version;
 
+        pgpu->big_page_size = nvgpu_mm_get_default_big_page_size(g);
+        pgpu->pde_coverage_bit_count =
+                g->ops.mm.get_mmu_levels(g, pgpu->big_page_size)[0].lo_bit[0];
+        pgpu->available_big_page_sizes = nvgpu_mm_get_available_big_page_sizes(g);
+
         if (request->gpu_characteristics_buf_size > 0) {
                 size_t write_size = sizeof(*pgpu);