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/*
* Copyright (c) 2024, sakumisu
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "usbh_core.h"
#include "usbh_msc.h"
#include "rtthread.h"
#include <dfs_fs.h>
#define DEV_FORMAT "/dev/sd%c"
#ifndef RT_USING_DFS_ELMFAT
#error "RT_USING_DFS_ELMFAT must be enabled to use USB mass storage device"
#endif
#ifndef CONFIG_USB_DFS_MOUNT_POINT
#define CONFIG_USB_DFS_MOUNT_POINT "/"
#endif
static rt_err_t rt_udisk_init(rt_device_t dev)
{
struct usbh_msc *msc_class = (struct usbh_msc *)dev->user_data;
if (usbh_msc_scsi_init(msc_class) < 0) {
return -RT_ERROR;
}
return RT_EOK;
}
static rt_ssize_t rt_udisk_read(rt_device_t dev, rt_off_t pos, void *buffer,
rt_size_t size)
{
struct usbh_msc *msc_class = (struct usbh_msc *)dev->user_data;
int ret;
rt_uint8_t *align_buf;
align_buf = (rt_uint8_t *)buffer;
if ((uint32_t)buffer & (CONFIG_USB_ALIGN_SIZE - 1)) {
align_buf = rt_malloc_align(size * msc_class->blocksize, CONFIG_USB_ALIGN_SIZE);
if (!align_buf) {
rt_kprintf("msc get align buf failed\n");
return 0;
}
} else {
}
ret = usbh_msc_scsi_read10(msc_class, pos, (uint8_t *)align_buf, size);
if (ret < 0) {
rt_kprintf("usb mass_storage read failed\n");
return 0;
}
if ((uint32_t)buffer & (CONFIG_USB_ALIGN_SIZE - 1)) {
usb_memcpy(buffer, align_buf, size * msc_class->blocksize);
rt_free_align(align_buf);
}
return size;
}
static rt_ssize_t rt_udisk_write(rt_device_t dev, rt_off_t pos, const void *buffer,
rt_size_t size)
{
struct usbh_msc *msc_class = (struct usbh_msc *)dev->user_data;
int ret;
rt_uint8_t *align_buf;
align_buf = (rt_uint8_t *)buffer;
if ((uint32_t)buffer & (CONFIG_USB_ALIGN_SIZE - 1)) {
align_buf = rt_malloc_align(size * msc_class->blocksize, CONFIG_USB_ALIGN_SIZE);
if (!align_buf) {
rt_kprintf("msc get align buf failed\n");
return 0;
}
usb_memcpy(align_buf, buffer, size * msc_class->blocksize);
}
ret = usbh_msc_scsi_write10(msc_class, pos, (uint8_t *)align_buf, size);
if (ret < 0) {
rt_kprintf("usb mass_storage write failed\n");
return 0;
}
if ((uint32_t)buffer & (CONFIG_USB_ALIGN_SIZE - 1)) {
rt_free_align(align_buf);
}
return size;
}
static rt_err_t rt_udisk_control(rt_device_t dev, int cmd, void *args)
{
/* check parameter */
RT_ASSERT(dev != RT_NULL);
struct usbh_msc *msc_class = (struct usbh_msc *)dev->user_data;
if (cmd == RT_DEVICE_CTRL_BLK_GETGEOME) {
struct rt_device_blk_geometry *geometry;
geometry = (struct rt_device_blk_geometry *)args;
if (geometry == RT_NULL)
return -RT_ERROR;
geometry->bytes_per_sector = msc_class->blocksize;
geometry->block_size = msc_class->blocksize;
geometry->sector_count = msc_class->blocknum;
}
return RT_EOK;
}
#ifdef RT_USING_DEVICE_OPS
const static struct rt_device_ops udisk_device_ops = {
rt_udisk_init,
RT_NULL,
RT_NULL,
rt_udisk_read,
rt_udisk_write,
rt_udisk_control
};
#endif
static void usbh_msc_thread(CONFIG_USB_OSAL_THREAD_SET_ARGV)
{
struct usbh_msc *msc_class = (struct usbh_msc *)CONFIG_USB_OSAL_THREAD_GET_ARGV;
char name[CONFIG_USBHOST_DEV_NAMELEN];
char mount_point[CONFIG_USBHOST_DEV_NAMELEN];
int ret;
snprintf(name, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT, msc_class->sdchar);
snprintf(mount_point, CONFIG_USBHOST_DEV_NAMELEN, CONFIG_USB_DFS_MOUNT_POINT, msc_class->sdchar);
ret = dfs_mount(name, mount_point, "elm", 0, 0);
if (ret == 0) {
rt_kprintf("udisk: %s mount successfully\n", name);
} else {
rt_kprintf("udisk: %s mount failed, ret = %d\n", name, ret);
}
usb_osal_thread_delete(NULL);
}
void usbh_msc_run(struct usbh_msc *msc_class)
{
struct rt_device *dev;
char name[CONFIG_USBHOST_DEV_NAMELEN];
dev = rt_malloc(sizeof(struct rt_device));
memset(dev, 0, sizeof(struct rt_device));
snprintf(name, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT, msc_class->sdchar);
dev->type = RT_Device_Class_Block;
#ifdef RT_USING_DEVICE_OPS
dev->ops = &udisk_device_ops;
#else
dev->init = rt_udisk_init;
dev->read = rt_udisk_read;
dev->write = rt_udisk_write;
dev->control = rt_udisk_control;
#endif
dev->user_data = msc_class;
rt_device_register(dev, name, RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE);
usb_osal_thread_create("usbh_msc", 2048, CONFIG_USBHOST_PSC_PRIO + 1, usbh_msc_thread, msc_class);
}
void usbh_msc_stop(struct usbh_msc *msc_class)
{
struct rt_device *dev;
char name[CONFIG_USBHOST_DEV_NAMELEN];
char mount_point[CONFIG_USBHOST_DEV_NAMELEN];
snprintf(name, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT, msc_class->sdchar);
snprintf(mount_point, CONFIG_USBHOST_DEV_NAMELEN, CONFIG_USB_DFS_MOUNT_POINT, msc_class->sdchar);
dfs_unmount(mount_point);
dev = rt_device_find(name);
if (dev) {
rt_device_unregister(dev);
rt_free(dev);
}
}
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