64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
|
/*
|
||
|
|
* drivers/video/tegra/nvmap/nvmap_cache_t19x.c
|
||
|
|
*
|
||
|
|
* Copyright (c) 2016-2021, 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,
|
||
|
|
* version 2, as published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
||
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||
|
|
* more details.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define pr_fmt(fmt) "nvmap: %s() " fmt, __func__
|
||
|
|
|
||
|
|
#include <linux/miscdevice.h>
|
||
|
|
#include <linux/nvmap_t19x.h>
|
||
|
|
|
||
|
|
#include "nvmap_priv.h"
|
||
|
|
|
||
|
|
struct static_key nvmap_updated_cache_config;
|
||
|
|
|
||
|
|
static void nvmap_handle_get_cacheability(struct nvmap_handle *h,
|
||
|
|
bool *inner, bool *outer)
|
||
|
|
{
|
||
|
|
struct nvmap_handle_t19x *handle_t19x;
|
||
|
|
struct device *dev = nvmap_dev->dev_user.parent;
|
||
|
|
|
||
|
|
handle_t19x = dma_buf_get_drvdata(h->dmabuf, dev);
|
||
|
|
if (handle_t19x && atomic_read(&handle_t19x->nc_pin)) {
|
||
|
|
*inner = *outer = false;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
*inner = h->flags == NVMAP_HANDLE_CACHEABLE ||
|
||
|
|
h->flags == NVMAP_HANDLE_INNER_CACHEABLE;
|
||
|
|
*outer = h->flags == NVMAP_HANDLE_CACHEABLE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void nvmap_t19x_flush_cache(void)
|
||
|
|
{
|
||
|
|
void *unused = NULL;
|
||
|
|
|
||
|
|
tegra_flush_dcache_all(unused);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void nvmap_t19x_clean_cache(void)
|
||
|
|
{
|
||
|
|
void *unused = NULL;
|
||
|
|
|
||
|
|
tegra_clean_dcache_all(unused);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void nvmap_setup_t19x_cache_ops(struct nvmap_chip_cache_op *op)
|
||
|
|
{
|
||
|
|
op->inner_flush_cache_all = nvmap_t19x_flush_cache;
|
||
|
|
op->inner_clean_cache_all = nvmap_t19x_clean_cache;
|
||
|
|
op->nvmap_get_cacheability = nvmap_handle_get_cacheability;
|
||
|
|
op->name = kstrdup("scf", GFP_KERNEL);
|
||
|
|
}
|
||
|
|
NVMAP_CACHE_OF_DECLARE("nvidia,carveouts-t19x", nvmap_setup_t19x_cache_ops);
|