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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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10
drivers/gpu/nvgpu/os/linux/kmem.c
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2017-2019, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2017-2020, 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,
@@ -40,7 +40,7 @@ void *nvgpu_big_alloc_impl(struct gk20a *g, size_t size, bool clear)
{
void *p;
if (size > PAGE_SIZE) {
if (size > NVGPU_CPU_PAGE_SIZE) {
if (clear)
p = nvgpu_vzalloc(g, size);
else
@@ -314,12 +314,12 @@ static int __nvgpu_free_kmem_alloc(struct nvgpu_mem_alloc_tracker *tracker,
static void __nvgpu_check_valloc_size(unsigned long size)
{
WARN(size < PAGE_SIZE, "Alloc smaller than page size! (%lu)!\n", size);
WARN(size < NVGPU_CPU_PAGE_SIZE, "Alloc smaller than page size! (%lu)!\n", size);
}
static void __nvgpu_check_kalloc_size(size_t size)
{
WARN(size > PAGE_SIZE, "Alloc larger than page size! (%zu)!\n", size);
WARN(size > NVGPU_CPU_PAGE_SIZE, "Alloc larger than page size! (%zu)!\n", size);
}
void *__nvgpu_track_vmalloc(struct gk20a *g, unsigned long size,
@@ -570,7 +570,7 @@ int nvgpu_kmem_init(struct gk20a *g)
nvgpu_mutex_init(&g->vmallocs->lock);
nvgpu_mutex_init(&g->kmallocs->lock);
g->vmallocs->min_alloc = PAGE_SIZE;
g->vmallocs->min_alloc = NVGPU_CPU_PAGE_SIZE;
g->kmallocs->min_alloc = KMALLOC_MIN_SIZE;
/*