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/*
* Copyright (c) 2024, sakumisu
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <nuttx/fs/fs.h>
#include "usbh_core.h"
#include "usbh_msc.h"
#ifndef CONFIG_FS_FAT
#error "CONFIG_FS_FAT must be enabled"
#endif
#ifdef CONFIG_ARCH_DCACHE
#ifndef CONFIG_FAT_DMAMEMORY
#error "USBH MSC requires CONFIG_FAT_DMAMEMORY"
#endif
#endif
#define DEV_FORMAT "/dev/sd%c"
static int nuttx_errorcode(int error)
{
int err = 0;
switch (error) {
case -USB_ERR_NOMEM:
err = -EIO;
break;
case -USB_ERR_INVAL:
err = -EINVAL;
break;
case -USB_ERR_NODEV:
err = -ENODEV;
break;
case -USB_ERR_NOTCONN:
err = -ENOTCONN;
break;
case -USB_ERR_NOTSUPP:
err = -EIO;
break;
case -USB_ERR_BUSY:
err = -EBUSY;
break;
case -USB_ERR_RANGE:
err = -ERANGE;
break;
case -USB_ERR_STALL:
err = -EPERM;
break;
case -USB_ERR_NAK:
err = -EAGAIN;
break;
case -USB_ERR_DT:
err = -EIO;
break;
case -USB_ERR_IO:
err = -EIO;
break;
case -USB_ERR_SHUTDOWN:
err = -ESHUTDOWN;
break;
case -USB_ERR_TIMEOUT:
err = -ETIMEDOUT;
break;
default:
break;
}
return err;
}
static int usbhost_open(FAR struct inode *inode);
static int usbhost_close(FAR struct inode *inode);
static ssize_t usbhost_read(FAR struct inode *inode, unsigned char *buffer,
blkcnt_t startsector, unsigned int nsectors);
static ssize_t usbhost_write(FAR struct inode *inode,
FAR const unsigned char *buffer,
blkcnt_t startsector, unsigned int nsectors);
static int usbhost_geometry(FAR struct inode *inode,
FAR struct geometry *geometry);
static int usbhost_ioctl(FAR struct inode *inode, int cmd, unsigned long arg);
/* Block driver operations. This is the interface exposed to NuttX by the
* class that permits it to behave like a block driver.
*/
static const struct block_operations g_bops = {
usbhost_open, /* open */
usbhost_close, /* close */
usbhost_read, /* read */
usbhost_write, /* write */
usbhost_geometry, /* geometry */
usbhost_ioctl /* ioctl */
};
static int usbhost_open(FAR struct inode *inode)
{
struct usbh_msc *msc_class;
DEBUGASSERT(inode->i_private);
msc_class = (struct usbh_msc *)inode->i_private;
if (usbh_msc_scsi_init(msc_class) < 0) {
return -ENODEV;
}
return OK;
}
static int usbhost_close(FAR struct inode *inode)
{
DEBUGASSERT(inode->i_private);
return 0;
}
static ssize_t usbhost_read(FAR struct inode *inode, unsigned char *buffer,
blkcnt_t startsector, unsigned int nsectors)
{
struct usbh_msc *msc_class;
int ret;
DEBUGASSERT(inode->i_private);
msc_class = (struct usbh_msc *)inode->i_private;
ret = usbh_msc_scsi_read10(msc_class, startsector, (uint8_t *)buffer, nsectors);
if (ret < 0) {
return nuttx_errorcode(ret);
} else {
#if defined(CONFIG_ARCH_DCACHE) && !defined(CONFIG_USB_DCACHE_ENABLE)
up_invalidate_dcache((uintptr_t)buffer, (uintptr_t)(buffer + nsectors * msc_class->blocksize));
#endif
return nsectors;
}
}
static ssize_t usbhost_write(FAR struct inode *inode,
FAR const unsigned char *buffer,
blkcnt_t startsector, unsigned int nsectors)
{
struct usbh_msc *msc_class;
int ret;
DEBUGASSERT(inode->i_private);
msc_class = (struct usbh_msc *)inode->i_private;
#if defined(CONFIG_ARCH_DCACHE) && !defined(CONFIG_USB_DCACHE_ENABLE)
up_clean_dcache((uintptr_t)buffer, (uintptr_t)(buffer + nsectors * msc_class->blocksize));
#endif
ret = usbh_msc_scsi_write10(msc_class, startsector, (uint8_t *)buffer, nsectors);
if (ret < 0) {
return nuttx_errorcode(ret);
} else {
return nsectors;
}
}
static int usbhost_geometry(FAR struct inode *inode,
FAR struct geometry *geometry)
{
struct usbh_msc *msc_class;
DEBUGASSERT(inode->i_private);
msc_class = (struct usbh_msc *)inode->i_private;
if (msc_class->hport && msc_class->hport->connected) {
memset(geometry, 0, sizeof(*geometry));
geometry->geo_available = true;
geometry->geo_mediachanged = false;
geometry->geo_writeenabled = true;
geometry->geo_nsectors = msc_class->blocknum;
geometry->geo_sectorsize = msc_class->blocksize;
USB_LOG_DBG("nsectors: %ld, sectorsize: %ld\n",
geometry->geo_nsectors, geometry->geo_sectorsize);
return OK;
} else {
return -ENODEV;
}
return 0;
}
static int usbhost_ioctl(FAR struct inode *inode, int cmd, unsigned long arg)
{
struct usbh_msc *msc_class;
DEBUGASSERT(inode->i_private);
msc_class = (struct usbh_msc *)inode->i_private;
if (msc_class->hport && msc_class->hport->connected) {
return -ENOTTY;
} else {
return -ENODEV;
}
return 0;
}
void usbh_msc_run(struct usbh_msc *msc_class)
{
char devname[32];
snprintf(devname, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT, msc_class->sdchar);
register_blockdriver(devname, &g_bops, 0, msc_class);
}
void usbh_msc_stop(struct usbh_msc *msc_class)
{
char devname[32];
snprintf(devname, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT, msc_class->sdchar);
unregister_blockdriver(devname);
}
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