drivers/staging/media/atomisp/pci/hive_isp_css_common/host/mmu.c

Source file repositories/reference/linux-study-clean/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/mmu.c

File Facts

System
Linux kernel
Corpus path
drivers/staging/media/atomisp/pci/hive_isp_css_common/host/mmu.c
Extension
.c
Size
793 bytes
Lines
38
Domain
Driver Families
Bucket
drivers/staging
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
/*
 * Support for Intel Camera Imaging ISP subsystem.
 * Copyright (c) 2010-2015, Intel Corporation.
 */

/* The name "mmu.h is already taken" */
#include "mmu_device.h"

void mmu_set_page_table_base_index(
    const mmu_ID_t		ID,
    const hrt_data		base_index)
{
	mmu_reg_store(ID, _HRT_MMU_PAGE_TABLE_BASE_ADDRESS_REG_IDX, base_index);
	return;
}

hrt_data mmu_get_page_table_base_index(
    const mmu_ID_t		ID)
{
	return mmu_reg_load(ID, _HRT_MMU_PAGE_TABLE_BASE_ADDRESS_REG_IDX);
}

void mmu_invalidate_cache(
    const mmu_ID_t		ID)
{
	mmu_reg_store(ID, _HRT_MMU_INVALIDATE_TLB_REG_IDX, 1);
	return;
}

void mmu_invalidate_cache_all(void)
{
	mmu_ID_t	mmu_id;

	for (mmu_id = (mmu_ID_t)0; mmu_id < N_MMU_ID; mmu_id++)
		mmu_invalidate_cache(mmu_id);
}

Annotation

Implementation Notes