83d5cde47d
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1482 lines
39 KiB
C
1482 lines
39 KiB
C
/*
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* Sony MemoryStick Pro storage support
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*
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* Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Special thanks to Carlos Corbacho for providing various MemoryStick cards
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* that made this driver possible.
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*
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*/
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#include <linux/blkdev.h>
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#include <linux/idr.h>
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#include <linux/hdreg.h>
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#include <linux/kthread.h>
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#include <linux/delay.h>
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#include <linux/memstick.h>
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#define DRIVER_NAME "mspro_block"
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static int major;
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module_param(major, int, 0644);
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#define MSPRO_BLOCK_MAX_SEGS 32
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#define MSPRO_BLOCK_MAX_PAGES ((2 << 16) - 1)
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#define MSPRO_BLOCK_SIGNATURE 0xa5c3
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#define MSPRO_BLOCK_MAX_ATTRIBUTES 41
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#define MSPRO_BLOCK_PART_SHIFT 3
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enum {
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MSPRO_BLOCK_ID_SYSINFO = 0x10,
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MSPRO_BLOCK_ID_MODELNAME = 0x15,
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MSPRO_BLOCK_ID_MBR = 0x20,
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MSPRO_BLOCK_ID_PBR16 = 0x21,
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MSPRO_BLOCK_ID_PBR32 = 0x22,
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MSPRO_BLOCK_ID_SPECFILEVALUES1 = 0x25,
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MSPRO_BLOCK_ID_SPECFILEVALUES2 = 0x26,
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MSPRO_BLOCK_ID_DEVINFO = 0x30
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};
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struct mspro_sys_attr {
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size_t size;
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void *data;
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unsigned char id;
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char name[32];
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struct device_attribute dev_attr;
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};
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struct mspro_attr_entry {
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__be32 address;
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__be32 size;
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unsigned char id;
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unsigned char reserved[3];
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} __attribute__((packed));
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struct mspro_attribute {
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__be16 signature;
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unsigned short version;
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unsigned char count;
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unsigned char reserved[11];
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struct mspro_attr_entry entries[];
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} __attribute__((packed));
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struct mspro_sys_info {
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unsigned char class;
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unsigned char reserved0;
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__be16 block_size;
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__be16 block_count;
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__be16 user_block_count;
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__be16 page_size;
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unsigned char reserved1[2];
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unsigned char assembly_date[8];
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__be32 serial_number;
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unsigned char assembly_maker_code;
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unsigned char assembly_model_code[3];
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__be16 memory_maker_code;
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__be16 memory_model_code;
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unsigned char reserved2[4];
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unsigned char vcc;
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unsigned char vpp;
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__be16 controller_number;
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__be16 controller_function;
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__be16 start_sector;
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__be16 unit_size;
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unsigned char ms_sub_class;
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unsigned char reserved3[4];
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unsigned char interface_type;
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__be16 controller_code;
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unsigned char format_type;
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unsigned char reserved4;
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unsigned char device_type;
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unsigned char reserved5[7];
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unsigned char mspro_id[16];
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unsigned char reserved6[16];
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} __attribute__((packed));
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struct mspro_mbr {
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unsigned char boot_partition;
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unsigned char start_head;
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unsigned char start_sector;
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unsigned char start_cylinder;
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unsigned char partition_type;
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unsigned char end_head;
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unsigned char end_sector;
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unsigned char end_cylinder;
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unsigned int start_sectors;
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unsigned int sectors_per_partition;
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} __attribute__((packed));
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struct mspro_specfile {
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char name[8];
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char ext[3];
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unsigned char attr;
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unsigned char reserved[10];
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unsigned short time;
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unsigned short date;
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unsigned short cluster;
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unsigned int size;
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} __attribute__((packed));
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struct mspro_devinfo {
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__be16 cylinders;
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__be16 heads;
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__be16 bytes_per_track;
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__be16 bytes_per_sector;
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__be16 sectors_per_track;
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unsigned char reserved[6];
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} __attribute__((packed));
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struct mspro_block_data {
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struct memstick_dev *card;
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unsigned int usage_count;
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unsigned int caps;
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struct gendisk *disk;
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struct request_queue *queue;
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struct request *block_req;
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spinlock_t q_lock;
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unsigned short page_size;
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unsigned short cylinders;
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unsigned short heads;
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unsigned short sectors_per_track;
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unsigned char system;
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unsigned char read_only:1,
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eject:1,
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has_request:1,
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data_dir:1,
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active:1;
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unsigned char transfer_cmd;
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int (*mrq_handler)(struct memstick_dev *card,
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struct memstick_request **mrq);
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struct attribute_group attr_group;
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struct scatterlist req_sg[MSPRO_BLOCK_MAX_SEGS];
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unsigned int seg_count;
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unsigned int current_seg;
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unsigned int current_page;
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};
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static DEFINE_IDR(mspro_block_disk_idr);
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static DEFINE_MUTEX(mspro_block_disk_lock);
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static int mspro_block_complete_req(struct memstick_dev *card, int error);
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/*** Block device ***/
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static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
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{
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struct gendisk *disk = bdev->bd_disk;
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struct mspro_block_data *msb = disk->private_data;
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int rc = -ENXIO;
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mutex_lock(&mspro_block_disk_lock);
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if (msb && msb->card) {
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msb->usage_count++;
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if ((mode & FMODE_WRITE) && msb->read_only)
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rc = -EROFS;
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else
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rc = 0;
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}
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mutex_unlock(&mspro_block_disk_lock);
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return rc;
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}
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static int mspro_block_disk_release(struct gendisk *disk)
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{
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struct mspro_block_data *msb = disk->private_data;
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int disk_id = MINOR(disk_devt(disk)) >> MSPRO_BLOCK_PART_SHIFT;
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mutex_lock(&mspro_block_disk_lock);
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if (msb) {
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if (msb->usage_count)
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msb->usage_count--;
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if (!msb->usage_count) {
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kfree(msb);
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disk->private_data = NULL;
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idr_remove(&mspro_block_disk_idr, disk_id);
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put_disk(disk);
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}
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}
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mutex_unlock(&mspro_block_disk_lock);
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return 0;
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}
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static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
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{
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return mspro_block_disk_release(disk);
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}
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static int mspro_block_bd_getgeo(struct block_device *bdev,
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struct hd_geometry *geo)
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{
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struct mspro_block_data *msb = bdev->bd_disk->private_data;
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geo->heads = msb->heads;
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geo->sectors = msb->sectors_per_track;
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geo->cylinders = msb->cylinders;
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return 0;
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}
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static const struct block_device_operations ms_block_bdops = {
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.open = mspro_block_bd_open,
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.release = mspro_block_bd_release,
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.getgeo = mspro_block_bd_getgeo,
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.owner = THIS_MODULE
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};
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/*** Information ***/
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static struct mspro_sys_attr *mspro_from_sysfs_attr(struct attribute *attr)
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{
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struct device_attribute *dev_attr
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= container_of(attr, struct device_attribute, attr);
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return container_of(dev_attr, struct mspro_sys_attr, dev_attr);
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}
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static const char *mspro_block_attr_name(unsigned char tag)
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{
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switch (tag) {
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case MSPRO_BLOCK_ID_SYSINFO:
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return "attr_sysinfo";
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case MSPRO_BLOCK_ID_MODELNAME:
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return "attr_modelname";
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case MSPRO_BLOCK_ID_MBR:
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return "attr_mbr";
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case MSPRO_BLOCK_ID_PBR16:
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return "attr_pbr16";
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case MSPRO_BLOCK_ID_PBR32:
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return "attr_pbr32";
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case MSPRO_BLOCK_ID_SPECFILEVALUES1:
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return "attr_specfilevalues1";
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case MSPRO_BLOCK_ID_SPECFILEVALUES2:
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return "attr_specfilevalues2";
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case MSPRO_BLOCK_ID_DEVINFO:
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return "attr_devinfo";
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default:
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return NULL;
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};
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}
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typedef ssize_t (*sysfs_show_t)(struct device *dev,
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struct device_attribute *attr,
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char *buffer);
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static ssize_t mspro_block_attr_show_default(struct device *dev,
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struct device_attribute *attr,
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char *buffer)
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{
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struct mspro_sys_attr *s_attr = container_of(attr,
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struct mspro_sys_attr,
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dev_attr);
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ssize_t cnt, rc = 0;
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for (cnt = 0; cnt < s_attr->size; cnt++) {
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if (cnt && !(cnt % 16)) {
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if (PAGE_SIZE - rc)
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buffer[rc++] = '\n';
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}
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "%02x ",
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((unsigned char *)s_attr->data)[cnt]);
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}
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return rc;
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}
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static ssize_t mspro_block_attr_show_sysinfo(struct device *dev,
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struct device_attribute *attr,
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char *buffer)
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{
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struct mspro_sys_attr *x_attr = container_of(attr,
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struct mspro_sys_attr,
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dev_attr);
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struct mspro_sys_info *x_sys = x_attr->data;
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ssize_t rc = 0;
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int date_tz = 0, date_tz_f = 0;
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if (x_sys->assembly_date[0] > 0x80U) {
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date_tz = (~x_sys->assembly_date[0]) + 1;
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date_tz_f = date_tz & 3;
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date_tz >>= 2;
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date_tz = -date_tz;
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date_tz_f *= 15;
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} else if (x_sys->assembly_date[0] < 0x80U) {
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date_tz = x_sys->assembly_date[0];
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date_tz_f = date_tz & 3;
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date_tz >>= 2;
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date_tz_f *= 15;
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}
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "class: %x\n",
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x_sys->class);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block size: %x\n",
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be16_to_cpu(x_sys->block_size));
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "block count: %x\n",
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be16_to_cpu(x_sys->block_count));
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "user block count: %x\n",
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be16_to_cpu(x_sys->user_block_count));
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "page size: %x\n",
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be16_to_cpu(x_sys->page_size));
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly date: "
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"GMT%+d:%d %04u-%02u-%02u %02u:%02u:%02u\n",
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date_tz, date_tz_f,
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be16_to_cpup((__be16 *)&x_sys->assembly_date[1]),
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x_sys->assembly_date[3], x_sys->assembly_date[4],
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x_sys->assembly_date[5], x_sys->assembly_date[6],
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x_sys->assembly_date[7]);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "serial number: %x\n",
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be32_to_cpu(x_sys->serial_number));
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
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"assembly maker code: %x\n",
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x_sys->assembly_maker_code);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "assembly model code: "
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"%02x%02x%02x\n", x_sys->assembly_model_code[0],
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x_sys->assembly_model_code[1],
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x_sys->assembly_model_code[2]);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory maker code: %x\n",
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be16_to_cpu(x_sys->memory_maker_code));
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "memory model code: %x\n",
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be16_to_cpu(x_sys->memory_model_code));
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vcc: %x\n",
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x_sys->vcc);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "vpp: %x\n",
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x_sys->vpp);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller number: %x\n",
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be16_to_cpu(x_sys->controller_number));
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
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"controller function: %x\n",
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be16_to_cpu(x_sys->controller_function));
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
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be16_to_cpu(x_sys->start_sector));
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "unit size: %x\n",
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be16_to_cpu(x_sys->unit_size));
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sub class: %x\n",
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x_sys->ms_sub_class);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "interface type: %x\n",
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x_sys->interface_type);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "controller code: %x\n",
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be16_to_cpu(x_sys->controller_code));
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "format type: %x\n",
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x_sys->format_type);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "device type: %x\n",
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x_sys->device_type);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "mspro id: %s\n",
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x_sys->mspro_id);
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return rc;
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}
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static ssize_t mspro_block_attr_show_modelname(struct device *dev,
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struct device_attribute *attr,
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char *buffer)
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{
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struct mspro_sys_attr *s_attr = container_of(attr,
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struct mspro_sys_attr,
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dev_attr);
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return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
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}
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static ssize_t mspro_block_attr_show_mbr(struct device *dev,
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struct device_attribute *attr,
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char *buffer)
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{
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struct mspro_sys_attr *x_attr = container_of(attr,
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struct mspro_sys_attr,
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dev_attr);
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struct mspro_mbr *x_mbr = x_attr->data;
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ssize_t rc = 0;
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "boot partition: %x\n",
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x_mbr->boot_partition);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start head: %x\n",
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x_mbr->start_head);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sector: %x\n",
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x_mbr->start_sector);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cylinder: %x\n",
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x_mbr->start_cylinder);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "partition type: %x\n",
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x_mbr->partition_type);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end head: %x\n",
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x_mbr->end_head);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end sector: %x\n",
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x_mbr->end_sector);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "end cylinder: %x\n",
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x_mbr->end_cylinder);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start sectors: %x\n",
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x_mbr->start_sectors);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc,
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"sectors per partition: %x\n",
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x_mbr->sectors_per_partition);
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return rc;
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}
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static ssize_t mspro_block_attr_show_specfile(struct device *dev,
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struct device_attribute *attr,
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char *buffer)
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{
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struct mspro_sys_attr *x_attr = container_of(attr,
|
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struct mspro_sys_attr,
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dev_attr);
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struct mspro_specfile *x_spfile = x_attr->data;
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char name[9], ext[4];
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ssize_t rc = 0;
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memcpy(name, x_spfile->name, 8);
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name[8] = 0;
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memcpy(ext, x_spfile->ext, 3);
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ext[3] = 0;
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "name: %s\n", name);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "ext: %s\n", ext);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "attribute: %x\n",
|
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x_spfile->attr);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "time: %d:%d:%d\n",
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x_spfile->time >> 11,
|
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(x_spfile->time >> 5) & 0x3f,
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(x_spfile->time & 0x1f) * 2);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "date: %d-%d-%d\n",
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(x_spfile->date >> 9) + 1980,
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(x_spfile->date >> 5) & 0xf,
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x_spfile->date & 0x1f);
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "start cluster: %x\n",
|
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x_spfile->cluster);
|
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rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "size: %x\n",
|
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x_spfile->size);
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|
return rc;
|
|
}
|
|
|
|
static ssize_t mspro_block_attr_show_devinfo(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buffer)
|
|
{
|
|
struct mspro_sys_attr *x_attr = container_of(attr,
|
|
struct mspro_sys_attr,
|
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dev_attr);
|
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struct mspro_devinfo *x_devinfo = x_attr->data;
|
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ssize_t rc = 0;
|
|
|
|
rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "cylinders: %x\n",
|
|
be16_to_cpu(x_devinfo->cylinders));
|
|
rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "heads: %x\n",
|
|
be16_to_cpu(x_devinfo->heads));
|
|
rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per track: %x\n",
|
|
be16_to_cpu(x_devinfo->bytes_per_track));
|
|
rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "bytes per sector: %x\n",
|
|
be16_to_cpu(x_devinfo->bytes_per_sector));
|
|
rc += scnprintf(buffer + rc, PAGE_SIZE - rc, "sectors per track: %x\n",
|
|
be16_to_cpu(x_devinfo->sectors_per_track));
|
|
return rc;
|
|
}
|
|
|
|
static sysfs_show_t mspro_block_attr_show(unsigned char tag)
|
|
{
|
|
switch (tag) {
|
|
case MSPRO_BLOCK_ID_SYSINFO:
|
|
return mspro_block_attr_show_sysinfo;
|
|
case MSPRO_BLOCK_ID_MODELNAME:
|
|
return mspro_block_attr_show_modelname;
|
|
case MSPRO_BLOCK_ID_MBR:
|
|
return mspro_block_attr_show_mbr;
|
|
case MSPRO_BLOCK_ID_SPECFILEVALUES1:
|
|
case MSPRO_BLOCK_ID_SPECFILEVALUES2:
|
|
return mspro_block_attr_show_specfile;
|
|
case MSPRO_BLOCK_ID_DEVINFO:
|
|
return mspro_block_attr_show_devinfo;
|
|
default:
|
|
return mspro_block_attr_show_default;
|
|
}
|
|
}
|
|
|
|
/*** Protocol handlers ***/
|
|
|
|
/*
|
|
* Functions prefixed with "h_" are protocol callbacks. They can be called from
|
|
* interrupt context. Return value of 0 means that request processing is still
|
|
* ongoing, while special error value of -EAGAIN means that current request is
|
|
* finished (and request processor should come back some time later).
|
|
*/
|
|
|
|
static int h_mspro_block_req_init(struct memstick_dev *card,
|
|
struct memstick_request **mrq)
|
|
{
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
|
|
*mrq = &card->current_mrq;
|
|
card->next_request = msb->mrq_handler;
|
|
return 0;
|
|
}
|
|
|
|
static int h_mspro_block_default(struct memstick_dev *card,
|
|
struct memstick_request **mrq)
|
|
{
|
|
return mspro_block_complete_req(card, (*mrq)->error);
|
|
}
|
|
|
|
static int h_mspro_block_default_bad(struct memstick_dev *card,
|
|
struct memstick_request **mrq)
|
|
{
|
|
return -ENXIO;
|
|
}
|
|
|
|
static int h_mspro_block_get_ro(struct memstick_dev *card,
|
|
struct memstick_request **mrq)
|
|
{
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
|
|
if (!(*mrq)->error) {
|
|
if ((*mrq)->data[offsetof(struct ms_status_register, status0)]
|
|
& MEMSTICK_STATUS0_WP)
|
|
msb->read_only = 1;
|
|
else
|
|
msb->read_only = 0;
|
|
}
|
|
|
|
return mspro_block_complete_req(card, (*mrq)->error);
|
|
}
|
|
|
|
static int h_mspro_block_wait_for_ced(struct memstick_dev *card,
|
|
struct memstick_request **mrq)
|
|
{
|
|
dev_dbg(&card->dev, "wait for ced: value %x\n", (*mrq)->data[0]);
|
|
|
|
if (!(*mrq)->error) {
|
|
if ((*mrq)->data[0] & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR))
|
|
(*mrq)->error = -EFAULT;
|
|
else if (!((*mrq)->data[0] & MEMSTICK_INT_CED))
|
|
return 0;
|
|
}
|
|
|
|
return mspro_block_complete_req(card, (*mrq)->error);
|
|
}
|
|
|
|
static int h_mspro_block_transfer_data(struct memstick_dev *card,
|
|
struct memstick_request **mrq)
|
|
{
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
unsigned char t_val = 0;
|
|
struct scatterlist t_sg = { 0 };
|
|
size_t t_offset;
|
|
|
|
if ((*mrq)->error)
|
|
return mspro_block_complete_req(card, (*mrq)->error);
|
|
|
|
switch ((*mrq)->tpc) {
|
|
case MS_TPC_WRITE_REG:
|
|
memstick_init_req(*mrq, MS_TPC_SET_CMD, &msb->transfer_cmd, 1);
|
|
(*mrq)->need_card_int = 1;
|
|
return 0;
|
|
case MS_TPC_SET_CMD:
|
|
t_val = (*mrq)->int_reg;
|
|
memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
|
|
if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT)
|
|
goto has_int_reg;
|
|
return 0;
|
|
case MS_TPC_GET_INT:
|
|
t_val = (*mrq)->data[0];
|
|
has_int_reg:
|
|
if (t_val & (MEMSTICK_INT_CMDNAK | MEMSTICK_INT_ERR)) {
|
|
t_val = MSPRO_CMD_STOP;
|
|
memstick_init_req(*mrq, MS_TPC_SET_CMD, &t_val, 1);
|
|
card->next_request = h_mspro_block_default;
|
|
return 0;
|
|
}
|
|
|
|
if (msb->current_page
|
|
== (msb->req_sg[msb->current_seg].length
|
|
/ msb->page_size)) {
|
|
msb->current_page = 0;
|
|
msb->current_seg++;
|
|
|
|
if (msb->current_seg == msb->seg_count) {
|
|
if (t_val & MEMSTICK_INT_CED) {
|
|
return mspro_block_complete_req(card,
|
|
0);
|
|
} else {
|
|
card->next_request
|
|
= h_mspro_block_wait_for_ced;
|
|
memstick_init_req(*mrq, MS_TPC_GET_INT,
|
|
NULL, 1);
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!(t_val & MEMSTICK_INT_BREQ)) {
|
|
memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
|
|
return 0;
|
|
}
|
|
|
|
t_offset = msb->req_sg[msb->current_seg].offset;
|
|
t_offset += msb->current_page * msb->page_size;
|
|
|
|
sg_set_page(&t_sg,
|
|
nth_page(sg_page(&(msb->req_sg[msb->current_seg])),
|
|
t_offset >> PAGE_SHIFT),
|
|
msb->page_size, offset_in_page(t_offset));
|
|
|
|
memstick_init_req_sg(*mrq, msb->data_dir == READ
|
|
? MS_TPC_READ_LONG_DATA
|
|
: MS_TPC_WRITE_LONG_DATA,
|
|
&t_sg);
|
|
(*mrq)->need_card_int = 1;
|
|
return 0;
|
|
case MS_TPC_READ_LONG_DATA:
|
|
case MS_TPC_WRITE_LONG_DATA:
|
|
msb->current_page++;
|
|
if (msb->caps & MEMSTICK_CAP_AUTO_GET_INT) {
|
|
t_val = (*mrq)->int_reg;
|
|
goto has_int_reg;
|
|
} else {
|
|
memstick_init_req(*mrq, MS_TPC_GET_INT, NULL, 1);
|
|
return 0;
|
|
}
|
|
|
|
default:
|
|
BUG();
|
|
}
|
|
}
|
|
|
|
/*** Data transfer ***/
|
|
|
|
static int mspro_block_issue_req(struct memstick_dev *card, int chunk)
|
|
{
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
sector_t t_sec;
|
|
unsigned int count;
|
|
struct mspro_param_register param;
|
|
|
|
try_again:
|
|
while (chunk) {
|
|
msb->current_page = 0;
|
|
msb->current_seg = 0;
|
|
msb->seg_count = blk_rq_map_sg(msb->block_req->q,
|
|
msb->block_req,
|
|
msb->req_sg);
|
|
|
|
if (!msb->seg_count) {
|
|
chunk = __blk_end_request_cur(msb->block_req, -ENOMEM);
|
|
continue;
|
|
}
|
|
|
|
t_sec = blk_rq_pos(msb->block_req) << 9;
|
|
sector_div(t_sec, msb->page_size);
|
|
|
|
count = blk_rq_bytes(msb->block_req);
|
|
count /= msb->page_size;
|
|
|
|
param.system = msb->system;
|
|
param.data_count = cpu_to_be16(count);
|
|
param.data_address = cpu_to_be32((uint32_t)t_sec);
|
|
param.tpc_param = 0;
|
|
|
|
msb->data_dir = rq_data_dir(msb->block_req);
|
|
msb->transfer_cmd = msb->data_dir == READ
|
|
? MSPRO_CMD_READ_DATA
|
|
: MSPRO_CMD_WRITE_DATA;
|
|
|
|
dev_dbg(&card->dev, "data transfer: cmd %x, "
|
|
"lba %x, count %x\n", msb->transfer_cmd,
|
|
be32_to_cpu(param.data_address), count);
|
|
|
|
card->next_request = h_mspro_block_req_init;
|
|
msb->mrq_handler = h_mspro_block_transfer_data;
|
|
memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
|
|
¶m, sizeof(param));
|
|
memstick_new_req(card->host);
|
|
return 0;
|
|
}
|
|
|
|
dev_dbg(&card->dev, "blk_fetch\n");
|
|
msb->block_req = blk_fetch_request(msb->queue);
|
|
if (!msb->block_req) {
|
|
dev_dbg(&card->dev, "issue end\n");
|
|
return -EAGAIN;
|
|
}
|
|
|
|
dev_dbg(&card->dev, "trying again\n");
|
|
chunk = 1;
|
|
goto try_again;
|
|
}
|
|
|
|
static int mspro_block_complete_req(struct memstick_dev *card, int error)
|
|
{
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
int chunk, cnt;
|
|
unsigned int t_len = 0;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&msb->q_lock, flags);
|
|
dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0,
|
|
error);
|
|
|
|
if (msb->has_request) {
|
|
/* Nothing to do - not really an error */
|
|
if (error == -EAGAIN)
|
|
error = 0;
|
|
|
|
if (error || (card->current_mrq.tpc == MSPRO_CMD_STOP)) {
|
|
if (msb->data_dir == READ) {
|
|
for (cnt = 0; cnt < msb->current_seg; cnt++)
|
|
t_len += msb->req_sg[cnt].length
|
|
/ msb->page_size;
|
|
|
|
if (msb->current_page)
|
|
t_len += msb->current_page - 1;
|
|
|
|
t_len *= msb->page_size;
|
|
}
|
|
} else
|
|
t_len = blk_rq_bytes(msb->block_req);
|
|
|
|
dev_dbg(&card->dev, "transferred %x (%d)\n", t_len, error);
|
|
|
|
if (error && !t_len)
|
|
t_len = blk_rq_cur_bytes(msb->block_req);
|
|
|
|
chunk = __blk_end_request(msb->block_req, error, t_len);
|
|
|
|
error = mspro_block_issue_req(card, chunk);
|
|
|
|
if (!error)
|
|
goto out;
|
|
else
|
|
msb->has_request = 0;
|
|
} else {
|
|
if (!error)
|
|
error = -EAGAIN;
|
|
}
|
|
|
|
card->next_request = h_mspro_block_default_bad;
|
|
complete_all(&card->mrq_complete);
|
|
out:
|
|
spin_unlock_irqrestore(&msb->q_lock, flags);
|
|
return error;
|
|
}
|
|
|
|
static void mspro_block_stop(struct memstick_dev *card)
|
|
{
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
int rc = 0;
|
|
unsigned long flags;
|
|
|
|
while (1) {
|
|
spin_lock_irqsave(&msb->q_lock, flags);
|
|
if (!msb->has_request) {
|
|
blk_stop_queue(msb->queue);
|
|
rc = 1;
|
|
}
|
|
spin_unlock_irqrestore(&msb->q_lock, flags);
|
|
|
|
if (rc)
|
|
break;
|
|
|
|
wait_for_completion(&card->mrq_complete);
|
|
}
|
|
}
|
|
|
|
static void mspro_block_start(struct memstick_dev *card)
|
|
{
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&msb->q_lock, flags);
|
|
blk_start_queue(msb->queue);
|
|
spin_unlock_irqrestore(&msb->q_lock, flags);
|
|
}
|
|
|
|
static int mspro_block_prepare_req(struct request_queue *q, struct request *req)
|
|
{
|
|
if (!blk_fs_request(req) && !blk_pc_request(req)) {
|
|
blk_dump_rq_flags(req, "MSPro unsupported request");
|
|
return BLKPREP_KILL;
|
|
}
|
|
|
|
req->cmd_flags |= REQ_DONTPREP;
|
|
|
|
return BLKPREP_OK;
|
|
}
|
|
|
|
static void mspro_block_submit_req(struct request_queue *q)
|
|
{
|
|
struct memstick_dev *card = q->queuedata;
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
struct request *req = NULL;
|
|
|
|
if (msb->has_request)
|
|
return;
|
|
|
|
if (msb->eject) {
|
|
while ((req = blk_fetch_request(q)) != NULL)
|
|
__blk_end_request_all(req, -ENODEV);
|
|
|
|
return;
|
|
}
|
|
|
|
msb->has_request = 1;
|
|
if (mspro_block_issue_req(card, 0))
|
|
msb->has_request = 0;
|
|
}
|
|
|
|
/*** Initialization ***/
|
|
|
|
static int mspro_block_wait_for_ced(struct memstick_dev *card)
|
|
{
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
|
|
card->next_request = h_mspro_block_req_init;
|
|
msb->mrq_handler = h_mspro_block_wait_for_ced;
|
|
memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
|
|
memstick_new_req(card->host);
|
|
wait_for_completion(&card->mrq_complete);
|
|
return card->current_mrq.error;
|
|
}
|
|
|
|
static int mspro_block_set_interface(struct memstick_dev *card,
|
|
unsigned char sys_reg)
|
|
{
|
|
struct memstick_host *host = card->host;
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
struct mspro_param_register param = {
|
|
.system = sys_reg,
|
|
.data_count = 0,
|
|
.data_address = 0,
|
|
.tpc_param = 0
|
|
};
|
|
|
|
card->next_request = h_mspro_block_req_init;
|
|
msb->mrq_handler = h_mspro_block_default;
|
|
memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m,
|
|
sizeof(param));
|
|
memstick_new_req(host);
|
|
wait_for_completion(&card->mrq_complete);
|
|
return card->current_mrq.error;
|
|
}
|
|
|
|
static int mspro_block_switch_interface(struct memstick_dev *card)
|
|
{
|
|
struct memstick_host *host = card->host;
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
int rc = 0;
|
|
|
|
try_again:
|
|
if (msb->caps & MEMSTICK_CAP_PAR4)
|
|
rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR4);
|
|
else
|
|
return 0;
|
|
|
|
if (rc) {
|
|
printk(KERN_WARNING
|
|
"%s: could not switch to 4-bit mode, error %d\n",
|
|
dev_name(&card->dev), rc);
|
|
return 0;
|
|
}
|
|
|
|
msb->system = MEMSTICK_SYS_PAR4;
|
|
host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_PAR4);
|
|
printk(KERN_INFO "%s: switching to 4-bit parallel mode\n",
|
|
dev_name(&card->dev));
|
|
|
|
if (msb->caps & MEMSTICK_CAP_PAR8) {
|
|
rc = mspro_block_set_interface(card, MEMSTICK_SYS_PAR8);
|
|
|
|
if (!rc) {
|
|
msb->system = MEMSTICK_SYS_PAR8;
|
|
host->set_param(host, MEMSTICK_INTERFACE,
|
|
MEMSTICK_PAR8);
|
|
printk(KERN_INFO
|
|
"%s: switching to 8-bit parallel mode\n",
|
|
dev_name(&card->dev));
|
|
} else
|
|
printk(KERN_WARNING
|
|
"%s: could not switch to 8-bit mode, error %d\n",
|
|
dev_name(&card->dev), rc);
|
|
}
|
|
|
|
card->next_request = h_mspro_block_req_init;
|
|
msb->mrq_handler = h_mspro_block_default;
|
|
memstick_init_req(&card->current_mrq, MS_TPC_GET_INT, NULL, 1);
|
|
memstick_new_req(card->host);
|
|
wait_for_completion(&card->mrq_complete);
|
|
rc = card->current_mrq.error;
|
|
|
|
if (rc) {
|
|
printk(KERN_WARNING
|
|
"%s: interface error, trying to fall back to serial\n",
|
|
dev_name(&card->dev));
|
|
msb->system = MEMSTICK_SYS_SERIAL;
|
|
host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_OFF);
|
|
msleep(10);
|
|
host->set_param(host, MEMSTICK_POWER, MEMSTICK_POWER_ON);
|
|
host->set_param(host, MEMSTICK_INTERFACE, MEMSTICK_SERIAL);
|
|
|
|
rc = memstick_set_rw_addr(card);
|
|
if (!rc)
|
|
rc = mspro_block_set_interface(card, msb->system);
|
|
|
|
if (!rc) {
|
|
msleep(150);
|
|
rc = mspro_block_wait_for_ced(card);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (msb->caps & MEMSTICK_CAP_PAR8) {
|
|
msb->caps &= ~MEMSTICK_CAP_PAR8;
|
|
goto try_again;
|
|
}
|
|
}
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
/* Memory allocated for attributes by this function should be freed by
|
|
* mspro_block_data_clear, no matter if the initialization process succeded
|
|
* or failed.
|
|
*/
|
|
static int mspro_block_read_attributes(struct memstick_dev *card)
|
|
{
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
struct mspro_param_register param = {
|
|
.system = msb->system,
|
|
.data_count = cpu_to_be16(1),
|
|
.data_address = 0,
|
|
.tpc_param = 0
|
|
};
|
|
struct mspro_attribute *attr = NULL;
|
|
struct mspro_sys_attr *s_attr = NULL;
|
|
unsigned char *buffer = NULL;
|
|
int cnt, rc, attr_count;
|
|
unsigned int addr;
|
|
unsigned short page_count;
|
|
|
|
attr = kmalloc(msb->page_size, GFP_KERNEL);
|
|
if (!attr)
|
|
return -ENOMEM;
|
|
|
|
sg_init_one(&msb->req_sg[0], attr, msb->page_size);
|
|
msb->seg_count = 1;
|
|
msb->current_seg = 0;
|
|
msb->current_page = 0;
|
|
msb->data_dir = READ;
|
|
msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
|
|
|
|
card->next_request = h_mspro_block_req_init;
|
|
msb->mrq_handler = h_mspro_block_transfer_data;
|
|
memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG, ¶m,
|
|
sizeof(param));
|
|
memstick_new_req(card->host);
|
|
wait_for_completion(&card->mrq_complete);
|
|
if (card->current_mrq.error) {
|
|
rc = card->current_mrq.error;
|
|
goto out_free_attr;
|
|
}
|
|
|
|
if (be16_to_cpu(attr->signature) != MSPRO_BLOCK_SIGNATURE) {
|
|
printk(KERN_ERR "%s: unrecognized device signature %x\n",
|
|
dev_name(&card->dev), be16_to_cpu(attr->signature));
|
|
rc = -ENODEV;
|
|
goto out_free_attr;
|
|
}
|
|
|
|
if (attr->count > MSPRO_BLOCK_MAX_ATTRIBUTES) {
|
|
printk(KERN_WARNING "%s: way too many attribute entries\n",
|
|
dev_name(&card->dev));
|
|
attr_count = MSPRO_BLOCK_MAX_ATTRIBUTES;
|
|
} else
|
|
attr_count = attr->count;
|
|
|
|
msb->attr_group.attrs = kzalloc((attr_count + 1)
|
|
* sizeof(struct attribute),
|
|
GFP_KERNEL);
|
|
if (!msb->attr_group.attrs) {
|
|
rc = -ENOMEM;
|
|
goto out_free_attr;
|
|
}
|
|
msb->attr_group.name = "media_attributes";
|
|
|
|
buffer = kmalloc(msb->page_size, GFP_KERNEL);
|
|
if (!buffer) {
|
|
rc = -ENOMEM;
|
|
goto out_free_attr;
|
|
}
|
|
memcpy(buffer, (char *)attr, msb->page_size);
|
|
page_count = 1;
|
|
|
|
for (cnt = 0; cnt < attr_count; ++cnt) {
|
|
s_attr = kzalloc(sizeof(struct mspro_sys_attr), GFP_KERNEL);
|
|
if (!s_attr) {
|
|
rc = -ENOMEM;
|
|
goto out_free_buffer;
|
|
}
|
|
|
|
msb->attr_group.attrs[cnt] = &s_attr->dev_attr.attr;
|
|
addr = be32_to_cpu(attr->entries[cnt].address);
|
|
rc = be32_to_cpu(attr->entries[cnt].size);
|
|
dev_dbg(&card->dev, "adding attribute %d: id %x, address %x, "
|
|
"size %x\n", cnt, attr->entries[cnt].id, addr, rc);
|
|
s_attr->id = attr->entries[cnt].id;
|
|
if (mspro_block_attr_name(s_attr->id))
|
|
snprintf(s_attr->name, sizeof(s_attr->name), "%s",
|
|
mspro_block_attr_name(attr->entries[cnt].id));
|
|
else
|
|
snprintf(s_attr->name, sizeof(s_attr->name),
|
|
"attr_x%02x", attr->entries[cnt].id);
|
|
|
|
s_attr->dev_attr.attr.name = s_attr->name;
|
|
s_attr->dev_attr.attr.mode = S_IRUGO;
|
|
s_attr->dev_attr.show = mspro_block_attr_show(s_attr->id);
|
|
|
|
if (!rc)
|
|
continue;
|
|
|
|
s_attr->size = rc;
|
|
s_attr->data = kmalloc(rc, GFP_KERNEL);
|
|
if (!s_attr->data) {
|
|
rc = -ENOMEM;
|
|
goto out_free_buffer;
|
|
}
|
|
|
|
if (((addr / msb->page_size)
|
|
== be32_to_cpu(param.data_address))
|
|
&& (((addr + rc - 1) / msb->page_size)
|
|
== be32_to_cpu(param.data_address))) {
|
|
memcpy(s_attr->data, buffer + addr % msb->page_size,
|
|
rc);
|
|
continue;
|
|
}
|
|
|
|
if (page_count <= (rc / msb->page_size)) {
|
|
kfree(buffer);
|
|
page_count = (rc / msb->page_size) + 1;
|
|
buffer = kmalloc(page_count * msb->page_size,
|
|
GFP_KERNEL);
|
|
if (!buffer) {
|
|
rc = -ENOMEM;
|
|
goto out_free_attr;
|
|
}
|
|
}
|
|
|
|
param.system = msb->system;
|
|
param.data_count = cpu_to_be16((rc / msb->page_size) + 1);
|
|
param.data_address = cpu_to_be32(addr / msb->page_size);
|
|
param.tpc_param = 0;
|
|
|
|
sg_init_one(&msb->req_sg[0], buffer,
|
|
be16_to_cpu(param.data_count) * msb->page_size);
|
|
msb->seg_count = 1;
|
|
msb->current_seg = 0;
|
|
msb->current_page = 0;
|
|
msb->data_dir = READ;
|
|
msb->transfer_cmd = MSPRO_CMD_READ_ATRB;
|
|
|
|
dev_dbg(&card->dev, "reading attribute pages %x, %x\n",
|
|
be32_to_cpu(param.data_address),
|
|
be16_to_cpu(param.data_count));
|
|
|
|
card->next_request = h_mspro_block_req_init;
|
|
msb->mrq_handler = h_mspro_block_transfer_data;
|
|
memstick_init_req(&card->current_mrq, MS_TPC_WRITE_REG,
|
|
(char *)¶m, sizeof(param));
|
|
memstick_new_req(card->host);
|
|
wait_for_completion(&card->mrq_complete);
|
|
if (card->current_mrq.error) {
|
|
rc = card->current_mrq.error;
|
|
goto out_free_buffer;
|
|
}
|
|
|
|
memcpy(s_attr->data, buffer + addr % msb->page_size, rc);
|
|
}
|
|
|
|
rc = 0;
|
|
out_free_buffer:
|
|
kfree(buffer);
|
|
out_free_attr:
|
|
kfree(attr);
|
|
return rc;
|
|
}
|
|
|
|
static int mspro_block_init_card(struct memstick_dev *card)
|
|
{
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
struct memstick_host *host = card->host;
|
|
int rc = 0;
|
|
|
|
msb->system = MEMSTICK_SYS_SERIAL;
|
|
card->reg_addr.r_offset = offsetof(struct mspro_register, status);
|
|
card->reg_addr.r_length = sizeof(struct ms_status_register);
|
|
card->reg_addr.w_offset = offsetof(struct mspro_register, param);
|
|
card->reg_addr.w_length = sizeof(struct mspro_param_register);
|
|
|
|
if (memstick_set_rw_addr(card))
|
|
return -EIO;
|
|
|
|
msb->caps = host->caps;
|
|
|
|
msleep(150);
|
|
rc = mspro_block_wait_for_ced(card);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = mspro_block_switch_interface(card);
|
|
if (rc)
|
|
return rc;
|
|
|
|
dev_dbg(&card->dev, "card activated\n");
|
|
if (msb->system != MEMSTICK_SYS_SERIAL)
|
|
msb->caps |= MEMSTICK_CAP_AUTO_GET_INT;
|
|
|
|
card->next_request = h_mspro_block_req_init;
|
|
msb->mrq_handler = h_mspro_block_get_ro;
|
|
memstick_init_req(&card->current_mrq, MS_TPC_READ_REG, NULL,
|
|
sizeof(struct ms_status_register));
|
|
memstick_new_req(card->host);
|
|
wait_for_completion(&card->mrq_complete);
|
|
if (card->current_mrq.error)
|
|
return card->current_mrq.error;
|
|
|
|
dev_dbg(&card->dev, "card r/w status %d\n", msb->read_only ? 0 : 1);
|
|
|
|
msb->page_size = 512;
|
|
rc = mspro_block_read_attributes(card);
|
|
if (rc)
|
|
return rc;
|
|
|
|
dev_dbg(&card->dev, "attributes loaded\n");
|
|
return 0;
|
|
|
|
}
|
|
|
|
static int mspro_block_init_disk(struct memstick_dev *card)
|
|
{
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
struct memstick_host *host = card->host;
|
|
struct mspro_devinfo *dev_info = NULL;
|
|
struct mspro_sys_info *sys_info = NULL;
|
|
struct mspro_sys_attr *s_attr = NULL;
|
|
int rc, disk_id;
|
|
u64 limit = BLK_BOUNCE_HIGH;
|
|
unsigned long capacity;
|
|
|
|
if (host->dev.dma_mask && *(host->dev.dma_mask))
|
|
limit = *(host->dev.dma_mask);
|
|
|
|
for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
|
|
s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
|
|
|
|
if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
|
|
dev_info = s_attr->data;
|
|
else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
|
|
sys_info = s_attr->data;
|
|
}
|
|
|
|
if (!dev_info || !sys_info)
|
|
return -ENODEV;
|
|
|
|
msb->cylinders = be16_to_cpu(dev_info->cylinders);
|
|
msb->heads = be16_to_cpu(dev_info->heads);
|
|
msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
|
|
|
|
msb->page_size = be16_to_cpu(sys_info->unit_size);
|
|
|
|
if (!idr_pre_get(&mspro_block_disk_idr, GFP_KERNEL))
|
|
return -ENOMEM;
|
|
|
|
mutex_lock(&mspro_block_disk_lock);
|
|
rc = idr_get_new(&mspro_block_disk_idr, card, &disk_id);
|
|
mutex_unlock(&mspro_block_disk_lock);
|
|
|
|
if (rc)
|
|
return rc;
|
|
|
|
if ((disk_id << MSPRO_BLOCK_PART_SHIFT) > 255) {
|
|
rc = -ENOSPC;
|
|
goto out_release_id;
|
|
}
|
|
|
|
msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
|
|
if (!msb->disk) {
|
|
rc = -ENOMEM;
|
|
goto out_release_id;
|
|
}
|
|
|
|
msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
|
|
if (!msb->queue) {
|
|
rc = -ENOMEM;
|
|
goto out_put_disk;
|
|
}
|
|
|
|
msb->queue->queuedata = card;
|
|
blk_queue_prep_rq(msb->queue, mspro_block_prepare_req);
|
|
|
|
blk_queue_bounce_limit(msb->queue, limit);
|
|
blk_queue_max_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
|
|
blk_queue_max_phys_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
|
|
blk_queue_max_hw_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
|
|
blk_queue_max_segment_size(msb->queue,
|
|
MSPRO_BLOCK_MAX_PAGES * msb->page_size);
|
|
|
|
msb->disk->major = major;
|
|
msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
|
|
msb->disk->fops = &ms_block_bdops;
|
|
msb->usage_count = 1;
|
|
msb->disk->private_data = msb;
|
|
msb->disk->queue = msb->queue;
|
|
msb->disk->driverfs_dev = &card->dev;
|
|
|
|
sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
|
|
|
|
blk_queue_logical_block_size(msb->queue, msb->page_size);
|
|
|
|
capacity = be16_to_cpu(sys_info->user_block_count);
|
|
capacity *= be16_to_cpu(sys_info->block_size);
|
|
capacity *= msb->page_size >> 9;
|
|
set_capacity(msb->disk, capacity);
|
|
dev_dbg(&card->dev, "capacity set %ld\n", capacity);
|
|
|
|
add_disk(msb->disk);
|
|
msb->active = 1;
|
|
return 0;
|
|
|
|
out_put_disk:
|
|
put_disk(msb->disk);
|
|
out_release_id:
|
|
mutex_lock(&mspro_block_disk_lock);
|
|
idr_remove(&mspro_block_disk_idr, disk_id);
|
|
mutex_unlock(&mspro_block_disk_lock);
|
|
return rc;
|
|
}
|
|
|
|
static void mspro_block_data_clear(struct mspro_block_data *msb)
|
|
{
|
|
int cnt;
|
|
struct mspro_sys_attr *s_attr;
|
|
|
|
if (msb->attr_group.attrs) {
|
|
for (cnt = 0; msb->attr_group.attrs[cnt]; ++cnt) {
|
|
s_attr = mspro_from_sysfs_attr(msb->attr_group
|
|
.attrs[cnt]);
|
|
kfree(s_attr->data);
|
|
kfree(s_attr);
|
|
}
|
|
kfree(msb->attr_group.attrs);
|
|
}
|
|
|
|
msb->card = NULL;
|
|
}
|
|
|
|
static int mspro_block_check_card(struct memstick_dev *card)
|
|
{
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
|
|
return (msb->active == 1);
|
|
}
|
|
|
|
static int mspro_block_probe(struct memstick_dev *card)
|
|
{
|
|
struct mspro_block_data *msb;
|
|
int rc = 0;
|
|
|
|
msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
|
|
if (!msb)
|
|
return -ENOMEM;
|
|
memstick_set_drvdata(card, msb);
|
|
msb->card = card;
|
|
spin_lock_init(&msb->q_lock);
|
|
|
|
rc = mspro_block_init_card(card);
|
|
|
|
if (rc)
|
|
goto out_free;
|
|
|
|
rc = sysfs_create_group(&card->dev.kobj, &msb->attr_group);
|
|
if (rc)
|
|
goto out_free;
|
|
|
|
rc = mspro_block_init_disk(card);
|
|
if (!rc) {
|
|
card->check = mspro_block_check_card;
|
|
card->stop = mspro_block_stop;
|
|
card->start = mspro_block_start;
|
|
return 0;
|
|
}
|
|
|
|
sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
|
|
out_free:
|
|
memstick_set_drvdata(card, NULL);
|
|
mspro_block_data_clear(msb);
|
|
kfree(msb);
|
|
return rc;
|
|
}
|
|
|
|
static void mspro_block_remove(struct memstick_dev *card)
|
|
{
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
unsigned long flags;
|
|
|
|
del_gendisk(msb->disk);
|
|
dev_dbg(&card->dev, "mspro block remove\n");
|
|
spin_lock_irqsave(&msb->q_lock, flags);
|
|
msb->eject = 1;
|
|
blk_start_queue(msb->queue);
|
|
spin_unlock_irqrestore(&msb->q_lock, flags);
|
|
|
|
blk_cleanup_queue(msb->queue);
|
|
msb->queue = NULL;
|
|
|
|
sysfs_remove_group(&card->dev.kobj, &msb->attr_group);
|
|
|
|
mutex_lock(&mspro_block_disk_lock);
|
|
mspro_block_data_clear(msb);
|
|
mutex_unlock(&mspro_block_disk_lock);
|
|
|
|
mspro_block_disk_release(msb->disk);
|
|
memstick_set_drvdata(card, NULL);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
|
|
static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state)
|
|
{
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&msb->q_lock, flags);
|
|
blk_stop_queue(msb->queue);
|
|
msb->active = 0;
|
|
spin_unlock_irqrestore(&msb->q_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mspro_block_resume(struct memstick_dev *card)
|
|
{
|
|
struct mspro_block_data *msb = memstick_get_drvdata(card);
|
|
unsigned long flags;
|
|
int rc = 0;
|
|
|
|
#ifdef CONFIG_MEMSTICK_UNSAFE_RESUME
|
|
|
|
struct mspro_block_data *new_msb;
|
|
struct memstick_host *host = card->host;
|
|
struct mspro_sys_attr *s_attr, *r_attr;
|
|
unsigned char cnt;
|
|
|
|
mutex_lock(&host->lock);
|
|
new_msb = kzalloc(sizeof(struct mspro_block_data), GFP_KERNEL);
|
|
if (!new_msb) {
|
|
rc = -ENOMEM;
|
|
goto out_unlock;
|
|
}
|
|
|
|
new_msb->card = card;
|
|
memstick_set_drvdata(card, new_msb);
|
|
if (mspro_block_init_card(card))
|
|
goto out_free;
|
|
|
|
for (cnt = 0; new_msb->attr_group.attrs[cnt]
|
|
&& msb->attr_group.attrs[cnt]; ++cnt) {
|
|
s_attr = mspro_from_sysfs_attr(new_msb->attr_group.attrs[cnt]);
|
|
r_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[cnt]);
|
|
|
|
if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO
|
|
&& r_attr->id == s_attr->id) {
|
|
if (memcmp(s_attr->data, r_attr->data, s_attr->size))
|
|
break;
|
|
|
|
msb->active = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
out_free:
|
|
memstick_set_drvdata(card, msb);
|
|
mspro_block_data_clear(new_msb);
|
|
kfree(new_msb);
|
|
out_unlock:
|
|
mutex_unlock(&host->lock);
|
|
|
|
#endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */
|
|
|
|
spin_lock_irqsave(&msb->q_lock, flags);
|
|
blk_start_queue(msb->queue);
|
|
spin_unlock_irqrestore(&msb->q_lock, flags);
|
|
return rc;
|
|
}
|
|
|
|
#else
|
|
|
|
#define mspro_block_suspend NULL
|
|
#define mspro_block_resume NULL
|
|
|
|
#endif /* CONFIG_PM */
|
|
|
|
static struct memstick_device_id mspro_block_id_tbl[] = {
|
|
{MEMSTICK_MATCH_ALL, MEMSTICK_TYPE_PRO, MEMSTICK_CATEGORY_STORAGE_DUO,
|
|
MEMSTICK_CLASS_DUO},
|
|
{}
|
|
};
|
|
|
|
|
|
static struct memstick_driver mspro_block_driver = {
|
|
.driver = {
|
|
.name = DRIVER_NAME,
|
|
.owner = THIS_MODULE
|
|
},
|
|
.id_table = mspro_block_id_tbl,
|
|
.probe = mspro_block_probe,
|
|
.remove = mspro_block_remove,
|
|
.suspend = mspro_block_suspend,
|
|
.resume = mspro_block_resume
|
|
};
|
|
|
|
static int __init mspro_block_init(void)
|
|
{
|
|
int rc = -ENOMEM;
|
|
|
|
rc = register_blkdev(major, DRIVER_NAME);
|
|
if (rc < 0) {
|
|
printk(KERN_ERR DRIVER_NAME ": failed to register "
|
|
"major %d, error %d\n", major, rc);
|
|
return rc;
|
|
}
|
|
if (!major)
|
|
major = rc;
|
|
|
|
rc = memstick_register_driver(&mspro_block_driver);
|
|
if (rc)
|
|
unregister_blkdev(major, DRIVER_NAME);
|
|
return rc;
|
|
}
|
|
|
|
static void __exit mspro_block_exit(void)
|
|
{
|
|
memstick_unregister_driver(&mspro_block_driver);
|
|
unregister_blkdev(major, DRIVER_NAME);
|
|
idr_destroy(&mspro_block_disk_idr);
|
|
}
|
|
|
|
module_init(mspro_block_init);
|
|
module_exit(mspro_block_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Alex Dubov");
|
|
MODULE_DESCRIPTION("Sony MemoryStickPro block device driver");
|
|
MODULE_DEVICE_TABLE(memstick, mspro_block_id_tbl);
|