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gpu: nvgpu: sim: make ring buffer independent of PAGE_SIZE

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The simulator ring buffer DMA interface supports buffers of the following sizes:
4, 8, 12 and 16K. At present, it is configured to 4K and it  happens to match
with the kernel PAGE_SIZE, which is used to wrap back the GET/PUT pointers once
4K is reached. However, this is not always true; for instance, take 64K pages.
Hence, replace PAGE_SIZE with SIM_BFR_SIZE.

Introduce macro NVGPU_CPU_PAGE_SIZE which aliases to PAGE_SIZE and replace
latter with former.

Bug 200658101
Jira NVGPU-6018

Change-Id: I83cc62b87291734015c51f3e5a98173549e065de
Signed-off-by: Antony Clince Alex <aalex@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2420728
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Antony Clince Alex
2020-09-28 16:44:40 +05:30
committed by Alex Waterman
parent 09857ecd91
commit c36752fe3d
37 changed files with 120 additions and 103 deletions
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2
drivers/gpu/nvgpu/common/init/nvgpu_init.c
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@@ -529,7 +529,7 @@ static int nvgpu_init_syncpt_mem(struct gk20a *g)
if (nvgpu_has_syncpoints(g) && (g->syncpt_unit_size != 0UL)) {
if (!nvgpu_mem_is_valid(&g->syncpt_mem)) {
nr_pages = U64(DIV_ROUND_UP(g->syncpt_unit_size,
PAGE_SIZE));
NVGPU_CPU_PAGE_SIZE));
err = nvgpu_mem_create_from_phys(g, &g->syncpt_mem,
g->syncpt_unit_base, nr_pages);
if (err != 0) {