luckfox-pico-sdk/sysdrv/source/kernel/arch/arm64/mm/dma-mapping.c
luckfox-eng29 8f34c2760d project:build.sh: Added fastboot support; custom modifications to U-Boot and kernel implemented using patches.
project:cfg:BoardConfig_IPC: Added fastboot BoardConfig file and firmware post-scripts, distinguishing between
the BoardConfigs for Luckfox Pico Pro and Luckfox Pico Max. project:app: Added fastboot_client and rk_smart_door
for quick boot applications; updated rkipc app to adapt to the latest media library. media:samples: Added more
usage examples. media:rockit: Fixed bugs; removed support for retrieving data frames from VPSS. media:isp:
Updated rkaiq library and related tools to support connection to RKISP_Tuner. sysdrv:Makefile: Added support for
compiling drv_ko on Luckfox Pico Ultra W using Ubuntu; added support for custom root filesystem.
sysdrv:tools:board: Updated Buildroot optional mirror sources, updated some software versions, and stored device
tree files and configuration files that undergo multiple modifications for U-Boot and kernel separately.
sysdrv:source:mcu: Used RISC-V MCU SDK with RT-Thread system, mainly for initializing camera AE during quick
boot. sysdrv:source:uboot: Added support for fastboot; added high baud rate DDR bin for serial firmware upgrades.
sysdrv:source:kernel: Upgraded to version 5.10.160; increased NPU frequency for RV1106G3; added support for
fastboot.

Signed-off-by: luckfox-eng29 <eng29@luckfox.com>
2024-10-14 09:47:04 +08:00

73 lines
1.7 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2012 ARM Ltd.
* Author: Catalin Marinas <catalin.marinas@arm.com>
*/
#include <linux/gfp.h>
#include <linux/cache.h>
#include <linux/dma-map-ops.h>
#include <linux/dma-iommu.h>
#include <xen/xen.h>
#include <xen/swiotlb-xen.h>
#include <trace/hooks/iommu.h>
#include <trace/hooks/dma_noalias.h>
#include <asm/cacheflush.h>
void arch_sync_dma_for_device(phys_addr_t paddr, size_t size,
enum dma_data_direction dir)
{
__dma_map_area(phys_to_virt(paddr), size, dir);
}
void arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size,
enum dma_data_direction dir)
{
__dma_unmap_area(phys_to_virt(paddr), size, dir);
}
void arch_dma_prep_coherent(struct page *page, size_t size)
{
__dma_flush_area(page_address(page), size);
}
#ifdef CONFIG_IOMMU_DMA
void arch_teardown_dma_ops(struct device *dev)
{
dev->dma_ops = NULL;
}
#endif
void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
const struct iommu_ops *iommu, bool coherent)
{
int cls = cache_line_size_of_cpu();
WARN_TAINT(!coherent && cls > ARCH_DMA_MINALIGN,
TAINT_CPU_OUT_OF_SPEC,
"%s %s: ARCH_DMA_MINALIGN smaller than CTR_EL0.CWG (%d < %d)",
dev_driver_string(dev), dev_name(dev),
ARCH_DMA_MINALIGN, cls);
dev->dma_coherent = coherent;
if (iommu) {
iommu_setup_dma_ops(dev, dma_base, size);
trace_android_vh_iommu_setup_dma_ops(dev, dma_base, size);
trace_android_rvh_iommu_setup_dma_ops(dev, dma_base, size);
}
/* Allow vendor modules to opt-in for the 2454944 erratum workaround */
trace_android_rvh_setup_dma_ops(dev);
#ifdef CONFIG_XEN
if (xen_initial_domain())
dev->dma_ops = &xen_swiotlb_dma_ops;
#endif
}
#ifdef CONFIG_NO_GKI
EXPORT_SYMBOL(__dma_map_area);
EXPORT_SYMBOL(__dma_unmap_area);
#endif