a1b77fd589
git grep -l 'u\(8\|16\|32\|64\)_t' | \ xargs sed -i "s/u\(8\|16\|32\|64\)_t/uint\1_t/g" git grep -l 's\(8\|16\|32\|64\)_t' | \ xargs sed -i "s/s\(8\|16\|32\|64\)_t/int\1_t/g" Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
106 lines
2.4 KiB
C
106 lines
2.4 KiB
C
/*
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* Copyright (c) 2016 Intel Corporation.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <string.h>
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#include <zephyr/types.h>
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#include <sys/__assert.h>
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#include <disk/disk_access.h>
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#include <errno.h>
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#include <init.h>
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#include <device.h>
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#define RAMDISK_SECTOR_SIZE 512
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#if defined(CONFIG_USB_MASS_STORAGE)
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/* A 16KB initialized RAMdisk which will fit on most target's RAM. It
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* is initialized with a valid file system for validating USB mass storage.
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*/
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#include "fat12_ramdisk.h"
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#else
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/* RAM Disk of configurable size. Fit for qemu testing (as it may exceed
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* target's RAM limits).
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*/
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#define RAMDISK_VOLUME_SIZE (CONFIG_DISK_RAM_VOLUME_SIZE * 1024)
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static uint8_t ramdisk_buf[RAMDISK_VOLUME_SIZE];
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#endif
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static void *lba_to_address(uint32_t lba)
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{
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__ASSERT(((lba * RAMDISK_SECTOR_SIZE) < RAMDISK_VOLUME_SIZE),
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"FS bound error");
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return &ramdisk_buf[(lba * RAMDISK_SECTOR_SIZE)];
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}
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static int disk_ram_access_status(struct disk_info *disk)
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{
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return DISK_STATUS_OK;
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}
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static int disk_ram_access_init(struct disk_info *disk)
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{
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return 0;
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}
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static int disk_ram_access_read(struct disk_info *disk, uint8_t *buff,
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uint32_t sector, uint32_t count)
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{
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memcpy(buff, lba_to_address(sector), count * RAMDISK_SECTOR_SIZE);
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return 0;
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}
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static int disk_ram_access_write(struct disk_info *disk, const uint8_t *buff,
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uint32_t sector, uint32_t count)
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{
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memcpy(lba_to_address(sector), buff, count * RAMDISK_SECTOR_SIZE);
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return 0;
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}
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static int disk_ram_access_ioctl(struct disk_info *disk, uint8_t cmd, void *buff)
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{
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switch (cmd) {
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case DISK_IOCTL_CTRL_SYNC:
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break;
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case DISK_IOCTL_GET_SECTOR_COUNT:
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*(uint32_t *)buff = RAMDISK_VOLUME_SIZE / RAMDISK_SECTOR_SIZE;
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break;
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case DISK_IOCTL_GET_SECTOR_SIZE:
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*(uint32_t *)buff = RAMDISK_SECTOR_SIZE;
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break;
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case DISK_IOCTL_GET_ERASE_BLOCK_SZ:
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*(uint32_t *)buff = 1U;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static const struct disk_operations ram_disk_ops = {
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.init = disk_ram_access_init,
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.status = disk_ram_access_status,
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.read = disk_ram_access_read,
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.write = disk_ram_access_write,
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.ioctl = disk_ram_access_ioctl,
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};
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static struct disk_info ram_disk = {
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.name = CONFIG_DISK_RAM_VOLUME_NAME,
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.ops = &ram_disk_ops,
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};
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static int disk_ram_init(struct device *dev)
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{
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ARG_UNUSED(dev);
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return disk_access_register(&ram_disk);
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}
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SYS_INIT(disk_ram_init, APPLICATION, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
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