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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
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/nvgpu/os/linux/vgpu/sysfs_vgpu.c
View File

@@ -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,
@@ -37,7 +37,7 @@ static ssize_t vgpu_load_show(struct device *dev,
if (err)
return err;
return snprintf(buf, PAGE_SIZE, "%u\n", p->load);
return snprintf(buf, NVGPU_CPU_PAGE_SIZE, "%u\n", p->load);
}
static DEVICE_ATTR(load, S_IRUGO, vgpu_load_show, NULL);
@@ -64,7 +64,7 @@ static ssize_t vgpu_ecc_stat_show(struct device *dev,
return err;
}
return snprintf(buf, PAGE_SIZE, "%u\n", p->value);
return snprintf(buf, NVGPU_CPU_PAGE_SIZE, "%u\n", p->value);
}
static int vgpu_create_ecc_sysfs(struct device *dev)

2
drivers/gpu/nvgpu/os/linux/vgpu/vgpu_linux.c
View File

@@ -111,7 +111,7 @@ static void vgpu_init_vars(struct gk20a *g, struct gk20a_platform *platform)
nvgpu_set_enabled(g, NVGPU_CAN_RAILGATE, platform->can_railgate_init);
g->railgate_delay = platform->railgate_delay_init;
g->mm.disable_bigpage = PAGE_SIZE < SZ_64K;
g->mm.disable_bigpage = NVGPU_CPU_PAGE_SIZE < SZ_64K;
nvgpu_set_enabled(g, NVGPU_MM_UNIFIED_MEMORY,
platform->unified_memory);
nvgpu_set_enabled(g, NVGPU_MM_UNIFY_ADDRESS_SPACES,