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/*
* Freescale UUT driver
*
* Copyright 2008-2010 Freescale Semiconductor, Inc.
* Copyright 2008-2009 Embedded Alley Solutions, Inc All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#ifndef __FSL_UPDATER_H
#define __FSL_UPDATER_H
#include <linux/miscdevice.h>
#include <linux/list.h>
#include <linux/vmalloc.h>
static int utp_init(struct fsg_dev *fsg);
static void utp_exit(struct fsg_dev *fsg);
static ssize_t utp_file_read(struct file *file,
char __user *buf,
size_t size,
loff_t *off);
static ssize_t utp_file_write(struct file *file,
const char __user *buf,
size_t size,
loff_t *off);
static struct utp_user_data *utp_user_data_alloc(size_t size);
static void utp_user_data_free(struct utp_user_data *uud);
static int utp_get_sense(struct fsg_dev *fsg);
static int utp_do_read(struct fsg_dev *fsg, void *data, size_t size);
static int utp_do_write(struct fsg_dev *fsg, void *data, size_t size);
static inline void utp_set_sense(struct fsg_dev *fsg, u16 code, u64 reply);
static int utp_handle_message(struct fsg_dev *fsg,
char *cdb_data,
int default_reply);
#define UTP_REPLY_PASS 0
#define UTP_REPLY_EXIT 0x8001
#define UTP_REPLY_BUSY 0x8002
#define UTP_REPLY_SIZE 0x8003
#define UTP_SENSE_KEY 9
#define UTP_MINOR 222
/* MISC_DYNAMIC_MINOR would be better, but... */
#define UTP_COMMAND_SIZE 80
#define UTP_SS_EXIT(fsg, r) utp_set_sense(fsg, UTP_REPLY_EXIT, (u64)r)
#define UTP_SS_PASS(fsg) utp_set_sense(fsg, UTP_REPLY_PASS, 0)
#define UTP_SS_BUSY(fsg, r) utp_set_sense(fsg, UTP_REPLY_BUSY, (u64)r)
#define UTP_SS_SIZE(fsg, r) utp_set_sense(fsg, UTP_REPLY_SIZE, (u64)r)
/* the structure of utp message which is mapped to 16-byte SCSI CBW's CDB */
#pragma pack(1)
struct utp_msg {
u8 f0;
u8 utp_msg_type;
u32 utp_msg_tag;
union {
struct {
u32 param_lsb;
u32 param_msb;
};
u64 param;
};
};
enum utp_msg_type {
UTP_POLL = 0,
UTP_EXEC,
UTP_GET,
UTP_PUT,
};
static struct utp_context {
wait_queue_head_t wq;
wait_queue_head_t list_full_wq;
struct mutex lock;
struct list_head read;
struct list_head write;
u32 sd, sdinfo, sdinfo_h; /* sense data */
int processed;
u8 *buffer;
u32 counter;
u64 utp_version;
} utp_context;
static const struct file_operations utp_fops = {
.open = nonseekable_open,
.read = utp_file_read,
.write = utp_file_write,
};
static struct miscdevice utp_dev = {
.minor = UTP_MINOR,
.name = "utp",
.fops = &utp_fops,
};
#define UTP_FLAG_COMMAND 0x00000001
#define UTP_FLAG_DATA 0x00000002
#define UTP_FLAG_STATUS 0x00000004
#define UTP_FLAG_REPORT_BUSY 0x10000000
struct utp_message {
u32 flags;
size_t size;
union {
struct {
u64 payload;
char command[1];
};
struct {
size_t bufsize;
u8 data[1];
};
u32 status;
};
};
struct utp_user_data {
struct list_head link;
struct utp_message data;
};
#pragma pack()
static inline struct utp_context *UTP_CTX(struct fsg_dev *fsg)
{
return (struct utp_context *)fsg->utp;
}
#endif /* __FSL_UPDATER_H */
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