diff options
Diffstat (limited to 'drivers/staging/westbridge/astoria/block/cyasblkdev_block.c')
| -rw-r--r-- | drivers/staging/westbridge/astoria/block/cyasblkdev_block.c | 1628 |
1 files changed, 1628 insertions, 0 deletions
diff --git a/drivers/staging/westbridge/astoria/block/cyasblkdev_block.c b/drivers/staging/westbridge/astoria/block/cyasblkdev_block.c new file mode 100644 index 0000000..f428a7a --- /dev/null +++ b/drivers/staging/westbridge/astoria/block/cyasblkdev_block.c @@ -0,0 +1,1628 @@ +/* cyanblkdev_block.c - West Bridge Linux Block Driver source file +## =========================== +## Copyright (C) 2010 Cypress Semiconductor +## +## This program is free software; you can redistribute it and/or +## modify it under the terms of the GNU General Public License +## as published by the Free Software Foundation; either version 2 +## of the License, or (at your option) any later version. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program; if not, write to the Free Software +## Foundation, Inc., 51 Franklin Street, Fifth Floor +## Boston, MA 02110-1301, USA. +## =========================== +*/ + +/* + * Linux block driver implementation for Cypress West Bridge. + * Based on the mmc block driver implementation by Andrew Christian + * for the linux 2.6.26 kernel. + * mmc_block.c, 5/28/2002 + */ + +/* + * Block driver for media (i.e., flash cards) + * + * Copyright 2002 Hewlett-Packard Company + * + * Use consistent with the GNU GPL is permitted, + * provided that this copyright notice is + * preserved in its entirety in all copies and derived works. + * + * HEWLETT-PACKARD COMPANY MAKES NO WARRANTIES, EXPRESSED OR IMPLIED, + * AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS + * FITNESS FOR ANY PARTICULAR PURPOSE. + * + * Many thanks to Alessandro Rubini and Jonathan Corbet! + * + * Author: Andrew Christian + * 28 May 2002 + */ + +#include <linux/moduleparam.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/fs.h> +#include <linux/errno.h> +#include <linux/hdreg.h> +#include <linux/kdev_t.h> +#include <linux/blkdev.h> + +#include <asm/system.h> +#include <linux/uaccess.h> + +#include <linux/scatterlist.h> +#include <linux/time.h> +#include <linux/signal.h> +#include <linux/delay.h> + +#include "cyasblkdev_queue.h" + +#define CYASBLKDEV_SHIFT 0 /* Only a single partition. */ +#define CYASBLKDEV_MAX_REQ_LEN (256) +#define CYASBLKDEV_NUM_MINORS (256 >> CYASBLKDEV_SHIFT) +#define CY_AS_TEST_NUM_BLOCKS (64) +#define CYASBLKDEV_MINOR_0 1 +#define CYASBLKDEV_MINOR_1 2 +#define CYASBLKDEV_MINOR_2 3 + +static int major; +module_param(major, int, 0444); +MODULE_PARM_DESC(major, + "specify the major device number for cyasblkdev block driver"); + +/* parameters passed from the user space */ +static int vfat_search; +module_param(vfat_search, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(vfat_search, + "dynamically find the location of the first sector"); + +static int private_partition_bus = -1; +module_param(private_partition_bus, int, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(private_partition_bus, + "bus number for private partition"); + +static int private_partition_size = -1; +module_param(private_partition_size, int, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(private_partition_size, + "size of the private partition"); + +/* + * There is one cyasblkdev_blk_data per slot. + */ +struct cyasblkdev_blk_data { + spinlock_t lock; + int media_count[2]; + const struct block_device_operations *blkops; + unsigned int usage; + unsigned int suspended; + + /* handle to the west bridge device this handle, typdefed as *void */ + cy_as_device_handle dev_handle; + + /* our custom structure, in addition to request queue, + * adds lock & semaphore items*/ + struct cyasblkdev_queue queue; + + /* 16 entries is enough given max request size + * 16 * 4K (64 K per request)*/ + struct scatterlist sg[16]; + + /* non-zero enables printk of executed reqests */ + unsigned int dbgprn_flags; + + /*gen_disk for private, system disk */ + struct gendisk *system_disk; + cy_as_media_type system_disk_type; + cy_bool system_disk_read_only; + cy_bool system_disk_bus_num; + + /* sector size for the medium */ + unsigned int system_disk_blk_size; + unsigned int system_disk_first_sector; + unsigned int system_disk_unit_no; + + /*gen_disk for bus 0 */ + struct gendisk *user_disk_0; + cy_as_media_type user_disk_0_type; + cy_bool user_disk_0_read_only; + cy_bool user_disk_0_bus_num; + + /* sector size for the medium */ + unsigned int user_disk_0_blk_size; + unsigned int user_disk_0_first_sector; + unsigned int user_disk_0_unit_no; + + /*gen_disk for bus 1 */ + struct gendisk *user_disk_1; + cy_as_media_type user_disk_1_type; + cy_bool user_disk_1_read_only; + cy_bool user_disk_1_bus_num; + + /* sector size for the medium */ + unsigned int user_disk_1_blk_size; + unsigned int user_disk_1_first_sector; + unsigned int user_disk_1_unit_no; +}; + +/* pointer to west bridge block data device superstructure */ +static struct cyasblkdev_blk_data *gl_bd; + +static DECLARE_MUTEX(open_lock); + +/* local forwardd declarationss */ +static cy_as_device_handle *cyas_dev_handle; +static void cyasblkdev_blk_deinit(struct cyasblkdev_blk_data *bd); + +/*change debug print options */ + #define DBGPRN_RD_RQ (1 < 0) + #define DBGPRN_WR_RQ (1 < 1) + #define DBGPRN_RQ_END (1 < 2) + +int blkdev_ctl_dbgprn( + int prn_flags + ) +{ + int cur_options = gl_bd->dbgprn_flags; + + DBGPRN_FUNC_NAME; + + /* set new debug print options */ + gl_bd->dbgprn_flags = prn_flags; + + /* return previous */ + return cur_options; +} +EXPORT_SYMBOL(blkdev_ctl_dbgprn); + +static struct cyasblkdev_blk_data *cyasblkdev_blk_get( + struct gendisk *disk + ) +{ + struct cyasblkdev_blk_data *bd; + + DBGPRN_FUNC_NAME; + + down(&open_lock); + + bd = disk->private_data; + + if (bd && (bd->usage == 0)) + bd = NULL; + + if (bd) { + bd->usage++; + #ifndef NBDEBUG + cy_as_hal_print_message( + "cyasblkdev_blk_get: usage = %d\n", bd->usage); + #endif + } + up(&open_lock); + + return bd; +} + +static void cyasblkdev_blk_put( + struct cyasblkdev_blk_data *bd + ) +{ + DBGPRN_FUNC_NAME; + + down(&open_lock); + + if (bd) { + bd->usage--; + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + " cyasblkdev_blk_put , bd->usage= %d\n", bd->usage); + #endif + } else { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "cyasblkdev: blk_put(bd) on bd = NULL!: usage = %d\n", + bd->usage); + #endif + up(&open_lock); + return; + } + + if (bd->usage == 0) { + put_disk(bd->user_disk_0); + put_disk(bd->user_disk_1); + put_disk(bd->system_disk); + cyasblkdev_cleanup_queue(&bd->queue); + + if (CY_AS_ERROR_SUCCESS != + cy_as_storage_release(bd->dev_handle, 0, 0, 0, 0)) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "cyasblkdev: cannot release bus 0\n"); + #endif + } + + if (CY_AS_ERROR_SUCCESS != + cy_as_storage_release(bd->dev_handle, 1, 0, 0, 0)) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "cyasblkdev: cannot release bus 1\n"); + #endif + } + + if (CY_AS_ERROR_SUCCESS != + cy_as_storage_stop(bd->dev_handle, 0, 0)) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "cyasblkdev: cannot stop storage stack\n"); + #endif + } + + #ifdef __CY_ASTORIA_SCM_KERNEL_HAL__ + /* If the SCM Kernel HAL is being used, disable the use + * of scatter/gather lists at the end of block driver usage. + */ + cy_as_hal_disable_scatter_list(cyasdevice_gethaltag()); + #endif + + /*ptr to global struct cyasblkdev_blk_data */ + gl_bd = NULL; + kfree(bd); + } + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "cyasblkdev (blk_put): usage = %d\n", + bd->usage); + #endif + up(&open_lock); +} + +static int cyasblkdev_blk_open( + struct block_device *bdev, + fmode_t mode + ) +{ + struct cyasblkdev_blk_data *bd = cyasblkdev_blk_get(bdev->bd_disk); + int ret = -ENXIO; + + DBGPRN_FUNC_NAME; + + if (bd) { + if (bd->usage == 2) + check_disk_change(bdev); + + ret = 0; + + if (bdev->bd_disk == bd->user_disk_0) { + if ((mode & FMODE_WRITE) && bd->user_disk_0_read_only) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "device marked as readonly " + "and write requested\n"); + #endif + + cyasblkdev_blk_put(bd); + ret = -EROFS; + } + } else if (bdev->bd_disk == bd->user_disk_1) { + if ((mode & FMODE_WRITE) && bd->user_disk_1_read_only) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "device marked as readonly " + "and write requested\n"); + #endif + + cyasblkdev_blk_put(bd); + ret = -EROFS; + } + } else if (bdev->bd_disk == bd->system_disk) { + if ((mode & FMODE_WRITE) && bd->system_disk_read_only) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "device marked as readonly " + "and write requested\n"); + #endif + + cyasblkdev_blk_put(bd); + ret = -EROFS; + } + } + } + + return ret; +} + +static int cyasblkdev_blk_release( + struct gendisk *disk, + fmode_t mode + ) +{ + struct cyasblkdev_blk_data *bd = disk->private_data; + + DBGPRN_FUNC_NAME; + + cyasblkdev_blk_put(bd); + return 0; +} + +static int cyasblkdev_blk_ioctl( + struct block_device *bdev, + fmode_t mode, + unsigned int cmd, + unsigned long arg + ) +{ + DBGPRN_FUNC_NAME; + + if (cmd == HDIO_GETGEO) { + /*for now we only process geometry IOCTL*/ + struct hd_geometry geo; + + memset(&geo, 0, sizeof(struct hd_geometry)); + + geo.cylinders = get_capacity(bdev->bd_disk) / (4 * 16); + geo.heads = 4; + geo.sectors = 16; + geo.start = get_start_sect(bdev); + + /* copy to user space */ + return copy_to_user((void __user *)arg, &geo, sizeof(geo)) + ? -EFAULT : 0; + } + + return -ENOTTY; +} + +/* Media_changed block_device opp + * this one is called by kernel to confirm if the media really changed + * as we indicated by issuing check_disk_change() call */ +int cyasblkdev_media_changed(struct gendisk *gd) +{ + struct cyasblkdev_blk_data *bd; + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("cyasblkdev_media_changed() is called\n"); + #endif + + if (gd) + bd = gd->private_data; + else { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "cyasblkdev_media_changed() is called, " + "but gd is null\n"); + #endif + } + + /* return media change state "1" yes, 0 no */ + return 0; +} + +/* this one called by kernel to give us a chence + * to prep the new media before it starts to rescaning + * of the newlly inserted SD media */ +int cyasblkdev_revalidate_disk(struct gendisk *gd) +{ + /*int (*revalidate_disk) (struct gendisk *); */ + + #ifndef WESTBRIDGE_NDEBUG + if (gd) + cy_as_hal_print_message( + "cyasblkdev_revalidate_disk() is called, " + "(gl_bd->usage:%d)\n", gl_bd->usage); + #endif + + /* 0 means ok, kern can go ahead with partition rescan */ + return 0; +} + + +/*standard block device driver interface */ +static struct block_device_operations cyasblkdev_bdops = { + .open = cyasblkdev_blk_open, + .release = cyasblkdev_blk_release, + .ioctl = cyasblkdev_blk_ioctl, + /* .getgeo = cyasblkdev_blk_getgeo, */ + /* added to support media removal( real and simulated) media */ + .media_changed = cyasblkdev_media_changed, + /* added to support media removal( real and simulated) media */ + .revalidate_disk = cyasblkdev_revalidate_disk, + .owner = THIS_MODULE, +}; + +/* west bridge block device prep request function */ +static int cyasblkdev_blk_prep_rq( + struct cyasblkdev_queue *bq, + struct request *req + ) +{ + struct cyasblkdev_blk_data *bd = bq->data; + int stat = BLKPREP_OK; + + DBGPRN_FUNC_NAME; + + /* If we have no device, we haven't finished initialising. */ + if (!bd || !bd->dev_handle) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message(KERN_ERR + "cyasblkdev %s: killing request - no device/host\n", + req->rq_disk->disk_name); + #endif + stat = BLKPREP_KILL; + } + + if (bd->suspended) { + blk_plug_device(bd->queue.queue); + stat = BLKPREP_DEFER; + } + + /* Check for excessive requests.*/ + if (blk_rq_pos(req) + blk_rq_sectors(req) > get_capacity(req->rq_disk)) { + cy_as_hal_print_message("cyasblkdev: bad request address\n"); + stat = BLKPREP_KILL; + } + + return stat; +} + +/*west bridge storage async api on_completed callback */ +static void cyasblkdev_issuecallback( + /* Handle to the device completing the storage operation */ + cy_as_device_handle handle, + /* The media type completing the operation */ + cy_as_media_type type, + /* The device completing the operation */ + uint32_t device, + /* The unit completing the operation */ + uint32_t unit, + /* The block number of the completed operation */ + uint32_t block_number, + /* The type of operation */ + cy_as_oper_type op, + /* The error status */ + cy_as_return_status_t status + ) +{ + int retry_cnt = 0; + DBGPRN_FUNC_NAME; + + if (status != CY_AS_ERROR_SUCCESS) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: async r/w: op:%d failed with error %d at address %d\n", + __func__, op, status, block_number); + #endif + } + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s calling blk_end_request from issue_callback " + "req=0x%x, status=0x%x, nr_sectors=0x%x\n", + __func__, (unsigned int) gl_bd->queue.req, status, + (unsigned int) blk_rq_sectors(gl_bd->queue.req)); + #endif + + /* note: blk_end_request w/o __ prefix should + * not require spinlocks on the queue*/ + while (blk_end_request(gl_bd->queue.req, + status, blk_rq_sectors(gl_bd->queue.req)*512)) { + retry_cnt++; + }; + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s blkdev_callback: ended rq on %d sectors, " + "with err:%d, n:%d times\n", __func__, + (int)blk_rq_sectors(gl_bd->queue.req), status, + retry_cnt + ); + #endif + + spin_lock_irq(&gl_bd->lock); + + /*elevate next request, if there is one*/ + if (!blk_queue_plugged(gl_bd->queue.queue)) { + /* queue is not plugged */ + gl_bd->queue.req = blk_fetch_request(gl_bd->queue.queue); + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s blkdev_callback: " + "blk_fetch_request():%p\n", + __func__, gl_bd->queue.req); + #endif + } + + if (gl_bd->queue.req) { + spin_unlock_irq(&gl_bd->lock); + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s blkdev_callback: about to " + "call issue_fn:%p\n", __func__, gl_bd->queue.req); + #endif + + gl_bd->queue.issue_fn(&gl_bd->queue, gl_bd->queue.req); + } else { + spin_unlock_irq(&gl_bd->lock); + } +} + +/* issue astoria blkdev request (issue_fn) */ +static int cyasblkdev_blk_issue_rq( + struct cyasblkdev_queue *bq, + struct request *req + ) +{ + struct cyasblkdev_blk_data *bd = bq->data; + int index = 0; + int ret = CY_AS_ERROR_SUCCESS; + uint32_t req_sector = 0; + uint32_t req_nr_sectors = 0; + int bus_num = 0; + int lcl_unit_no = 0; + + DBGPRN_FUNC_NAME; + + /* + * will construct a scatterlist for the given request; + * the return value is the number of actually used + * entries in the resulting list. Then, this scatterlist + * can be used for the actual DMA prep operation. + */ + spin_lock_irq(&bd->lock); + index = blk_rq_map_sg(bq->queue, req, bd->sg); + + if (req->rq_disk == bd->user_disk_0) { + bus_num = bd->user_disk_0_bus_num; + req_sector = blk_rq_pos(req) + gl_bd->user_disk_0_first_sector; + req_nr_sectors = blk_rq_sectors(req); + lcl_unit_no = gl_bd->user_disk_0_unit_no; + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: request made to disk 0 " + "for sector=%d, num_sectors=%d, unit_no=%d\n", + __func__, req_sector, (int) blk_rq_sectors(req), + lcl_unit_no); + #endif + } else if (req->rq_disk == bd->user_disk_1) { + bus_num = bd->user_disk_1_bus_num; + req_sector = blk_rq_pos(req) + gl_bd->user_disk_1_first_sector; + /*SECT_NUM_TRANSLATE(blk_rq_sectors(req));*/ + req_nr_sectors = blk_rq_sectors(req); + lcl_unit_no = gl_bd->user_disk_1_unit_no; + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: request made to disk 1 for " + "sector=%d, num_sectors=%d, unit_no=%d\n", __func__, + req_sector, (int) blk_rq_sectors(req), lcl_unit_no); + #endif + } else if (req->rq_disk == bd->system_disk) { + bus_num = bd->system_disk_bus_num; + req_sector = blk_rq_pos(req) + gl_bd->system_disk_first_sector; + req_nr_sectors = blk_rq_sectors(req); + lcl_unit_no = gl_bd->system_disk_unit_no; + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: request made to system disk " + "for sector=%d, num_sectors=%d, unit_no=%d\n", __func__, + req_sector, (int) blk_rq_sectors(req), lcl_unit_no); + #endif + } + #ifndef WESTBRIDGE_NDEBUG + else { + cy_as_hal_print_message( + "%s: invalid disk used for request\n", __func__); + } + #endif + + spin_unlock_irq(&bd->lock); + + if (rq_data_dir(req) == READ) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: calling readasync() " + "req_sector=0x%x, req_nr_sectors=0x%x, bd->sg:%x\n\n", + __func__, req_sector, req_nr_sectors, (uint32_t)bd->sg); + #endif + + ret = cy_as_storage_read_async(bd->dev_handle, bus_num, 0, + lcl_unit_no, req_sector, bd->sg, req_nr_sectors, + (cy_as_storage_callback)cyasblkdev_issuecallback); + + if (ret != CY_AS_ERROR_SUCCESS) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s:readasync() error %d at " + "address %ld, unit no %d\n", __func__, ret, + blk_rq_pos(req), lcl_unit_no); + cy_as_hal_print_message("%s:ending i/o request " + "on reg:%x\n", __func__, (uint32_t)req); + #endif + + while (blk_end_request(req, + (ret == CY_AS_ERROR_SUCCESS), + req_nr_sectors*512)) + ; + + bq->req = NULL; + } + } else { + ret = cy_as_storage_write_async(bd->dev_handle, bus_num, 0, + lcl_unit_no, req_sector, bd->sg, req_nr_sectors, + (cy_as_storage_callback)cyasblkdev_issuecallback); + + if (ret != CY_AS_ERROR_SUCCESS) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: write failed with " + "error %d at address %ld, unit no %d\n", + __func__, ret, blk_rq_pos(req), lcl_unit_no); + #endif + + /*end IO op on this request(does both + * end_that_request_... _first & _last) */ + while (blk_end_request(req, + (ret == CY_AS_ERROR_SUCCESS), + req_nr_sectors*512)) + ; + + bq->req = NULL; + } + } + + return ret; +} + +static unsigned long +dev_use[CYASBLKDEV_NUM_MINORS / (8 * sizeof(unsigned long))]; + + +/* storage event callback (note: called in astoria isr context) */ +static void cyasblkdev_storage_callback( + cy_as_device_handle dev_h, + cy_as_bus_number_t bus, + uint32_t device, + cy_as_storage_event evtype, + void *evdata + ) +{ + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: bus:%d, device:%d, evtype:%d, " + "evdata:%p\n ", __func__, bus, device, evtype, evdata); + #endif + + switch (evtype) { + case cy_as_storage_processor: + break; + + case cy_as_storage_removed: + break; + + case cy_as_storage_inserted: + break; + + default: + break; + } +} + +#define SECTORS_TO_SCAN 4096 + +uint32_t cyasblkdev_get_vfat_offset(int bus_num, int unit_no) +{ + /* + * for sd media, vfat partition boot record is not always + * located at sector it greatly depends on the system and + * software that was used to format the sd however, linux + * fs layer always expects it at sector 0, this function + * finds the offset and then uses it in all media r/w + * operations + */ + int sect_no, stat; + uint8_t *sect_buf; + bool br_found = false; + + DBGPRN_FUNC_NAME; + + sect_buf = kmalloc(1024, GFP_KERNEL); + + /* since HAL layer always uses sg lists instead of the + * buffer (for hw dmas) we need to initialize the sg list + * for local buffer*/ + sg_init_one(gl_bd->sg, sect_buf, 512); + + /* + * Check MPR partition table 1st, then try to scan through + * 1st 384 sectors until BR signature(intel JMP istruction + * code and ,0x55AA) is found + */ + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s scanning media for vfat partition...\n", __func__); + #endif + + for (sect_no = 0; sect_no < SECTORS_TO_SCAN; sect_no++) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s before cyasstorageread " + "gl_bd->sg addr=0x%x\n", __func__, + (unsigned int) gl_bd->sg); + #endif + + stat = cy_as_storage_read( + /* Handle to the device of interest */ + gl_bd->dev_handle, + /* The bus to access */ + bus_num, + /* The device to access */ + 0, + /* The unit to access */ + unit_no, + /* absolute sector number */ + sect_no, + /* sg structure */ + gl_bd->sg, + /* The number of blocks to be read */ + 1 + ); + + /* try only sectors with boot signature */ + if ((sect_buf[510] == 0x55) && (sect_buf[511] == 0xaa)) { + /* vfat boot record may also be located at + * sector 0, check it first */ + if (sect_buf[0] == 0xEB) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s vfat partition found " + "at sector:%d\n", + __func__, sect_no); + #endif + + br_found = true; + break; + } + } + + if (stat != 0) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s sector scan error\n", + __func__); + #endif + break; + } + } + + kfree(sect_buf); + + if (br_found) { + return sect_no; + } else { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s vfat partition is not found, using 0 offset\n", + __func__); + #endif + return 0; + } +} + +cy_as_storage_query_device_data dev_data = {0}; + +static int cyasblkdev_add_disks(int bus_num, + struct cyasblkdev_blk_data *bd, + int total_media_count, + int devidx) +{ + int ret = 0; + uint64_t disk_cap; + int lcl_unit_no; + cy_as_storage_query_unit_data unit_data = {0}; + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s:query device: " + "type:%d, removable:%d, writable:%d, " + "blksize %d, units:%d, locked:%d, " + "erase_sz:%d\n", + __func__, + dev_data.desc_p.type, + dev_data.desc_p.removable, + dev_data.desc_p.writeable, + dev_data.desc_p.block_size, + dev_data.desc_p.number_units, + dev_data.desc_p.locked, + dev_data.desc_p.erase_unit_size + ); + #endif + + /* make sure that device is not locked */ + if (dev_data.desc_p.locked) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: device is locked\n", __func__); + #endif + ret = cy_as_storage_release( + bd->dev_handle, bus_num, 0, 0, 0); + if (ret != CY_AS_ERROR_SUCCESS) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s cannot release" + " storage\n", __func__); + #endif + goto out; + } + goto out; + } + + unit_data.device = 0; + unit_data.unit = 0; + unit_data.bus = bus_num; + ret = cy_as_storage_query_unit(bd->dev_handle, + &unit_data, 0, 0); + if (ret != CY_AS_ERROR_SUCCESS) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: cannot query " + "%d device unit - reason code %d\n", + __func__, bus_num, ret); + #endif + goto out; + } + + if (private_partition_bus == bus_num) { + if (private_partition_size > 0) { + ret = cy_as_storage_create_p_partition( + bd->dev_handle, bus_num, 0, + private_partition_size, 0, 0); + if ((ret != CY_AS_ERROR_SUCCESS) && + (ret != CY_AS_ERROR_ALREADY_PARTITIONED)) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: cy_as_storage_" + "create_p_partition after size > 0 check " + "failed with error code %d\n", + __func__, ret); + #endif + + disk_cap = (uint64_t) + (unit_data.desc_p.unit_size); + lcl_unit_no = 0; + + } else if (ret == CY_AS_ERROR_ALREADY_PARTITIONED) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: cy_as_storage_create_p_partition " + "indicates memory already partitioned\n", + __func__); + #endif + + /*check to see that partition + * matches size */ + if (unit_data.desc_p.unit_size != + private_partition_size) { + ret = cy_as_storage_remove_p_partition( + bd->dev_handle, + bus_num, 0, 0, 0); + if (ret == CY_AS_ERROR_SUCCESS) { + ret = cy_as_storage_create_p_partition( + bd->dev_handle, bus_num, 0, + private_partition_size, 0, 0); + if (ret == CY_AS_ERROR_SUCCESS) { + unit_data.bus = bus_num; + unit_data.device = 0; + unit_data.unit = 1; + } else { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: cy_as_storage_create_p_partition " + "after removal unexpectedly failed " + "with error %d\n", __func__, ret); + #endif + + /* need to requery bus + * seeing as delete + * successful and create + * failed we have changed + * the disk properties */ + unit_data.bus = bus_num; + unit_data.device = 0; + unit_data.unit = 0; + } + + ret = cy_as_storage_query_unit( + bd->dev_handle, + &unit_data, 0, 0); + if (ret != CY_AS_ERROR_SUCCESS) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: cannot query %d " + "device unit - reason code %d\n", + __func__, bus_num, ret); + #endif + goto out; + } else { + disk_cap = (uint64_t) + (unit_data.desc_p.unit_size); + lcl_unit_no = + unit_data.unit; + } + } else { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: cy_as_storage_remove_p_partition " + "failed with error %d\n", + __func__, ret); + #endif + + unit_data.bus = bus_num; + unit_data.device = 0; + unit_data.unit = 1; + + ret = cy_as_storage_query_unit( + bd->dev_handle, &unit_data, 0, 0); + if (ret != CY_AS_ERROR_SUCCESS) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: cannot query %d " + "device unit - reason " + "code %d\n", __func__, + bus_num, ret); + #endif + goto out; + } + + disk_cap = (uint64_t) + (unit_data.desc_p.unit_size); + lcl_unit_no = + unit_data.unit; + } + } else { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: partition " + "exists and sizes equal\n", + __func__); + #endif + + /*partition already existed, + * need to query second unit*/ + unit_data.bus = bus_num; + unit_data.device = 0; + unit_data.unit = 1; + + ret = cy_as_storage_query_unit( + bd->dev_handle, &unit_data, 0, 0); + if (ret != CY_AS_ERROR_SUCCESS) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: cannot query %d " + "device unit " + "- reason code %d\n", + __func__, bus_num, ret); + #endif + goto out; + } else { + disk_cap = (uint64_t) + (unit_data.desc_p.unit_size); + lcl_unit_no = unit_data.unit; + } + } + } else { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: cy_as_storage_create_p_partition " + "created successfully\n", __func__); + #endif + + disk_cap = (uint64_t) + (unit_data.desc_p.unit_size - + private_partition_size); + + lcl_unit_no = 1; + } + } + #ifndef WESTBRIDGE_NDEBUG + else { + cy_as_hal_print_message( + "%s: invalid partition_size%d\n", __func__, + private_partition_size); + + disk_cap = (uint64_t) + (unit_data.desc_p.unit_size); + lcl_unit_no = 0; + } + #endif + } else { + disk_cap = (uint64_t) + (unit_data.desc_p.unit_size); + lcl_unit_no = 0; + } + + if ((bus_num == 0) || + (total_media_count == 1)) { + sprintf(bd->user_disk_0->disk_name, + "cyasblkdevblk%d", devidx); + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: disk unit_sz:%lu blk_sz:%d, " + "start_blk:%lu, capacity:%llu\n", + __func__, (unsigned long) + unit_data.desc_p.unit_size, + unit_data.desc_p.block_size, + (unsigned long) + unit_data.desc_p.start_block, + (uint64_t)disk_cap + ); + #endif + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: setting gendisk disk " + "capacity to %d\n", __func__, (int) disk_cap); + #endif + + /* initializing bd->queue */ + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: init bd->queue\n", + __func__); + #endif + + /* this will create a + * queue kernel thread */ + cyasblkdev_init_queue( + &bd->queue, &bd->lock); + + bd->queue.prep_fn = cyasblkdev_blk_prep_rq; + bd->queue.issue_fn = cyasblkdev_blk_issue_rq; + bd->queue.data = bd; + + /*blk_size should always + * be a multiple of 512, + * set to the max to ensure + * that all accesses aligned + * to the greatest multiple, + * can adjust request to + * smaller block sizes + * dynamically*/ + + bd->user_disk_0_read_only = !dev_data.desc_p.writeable; + bd->user_disk_0_blk_size = dev_data.desc_p.block_size; + bd->user_disk_0_type = dev_data.desc_p.type; + bd->user_disk_0_bus_num = bus_num; + bd->user_disk_0->major = major; + bd->user_disk_0->first_minor = devidx << CYASBLKDEV_SHIFT; + bd->user_disk_0->minors = 8; + bd->user_disk_0->fops = &cyasblkdev_bdops; + bd->user_disk_0->private_data = bd; + bd->user_disk_0->queue = bd->queue.queue; + bd->dbgprn_flags = DBGPRN_RD_RQ; + bd->user_disk_0_unit_no = lcl_unit_no; + + blk_queue_logical_block_size(bd->queue.queue, + bd->user_disk_0_blk_size); + + set_capacity(bd->user_disk_0, + disk_cap); + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: returned from set_capacity %d\n", + __func__, (int) disk_cap); + #endif + + /* need to start search from + * public partition beginning */ + if (vfat_search) { + bd->user_disk_0_first_sector = + cyasblkdev_get_vfat_offset( + bd->user_disk_0_bus_num, + bd->user_disk_0_unit_no); + } else { + bd->user_disk_0_first_sector = 0; + } + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: set user_disk_0_first " + "sector to %d\n", __func__, + bd->user_disk_0_first_sector); + cy_as_hal_print_message( + "%s: add_disk: disk->major=0x%x\n", + __func__, + bd->user_disk_0->major); + cy_as_hal_print_message( + "%s: add_disk: " + "disk->first_minor=0x%x\n", __func__, + bd->user_disk_0->first_minor); + cy_as_hal_print_message( + "%s: add_disk: " + "disk->minors=0x%x\n", __func__, + bd->user_disk_0->minors); + cy_as_hal_print_message( + "%s: add_disk: " + "disk->disk_name=%s\n", + __func__, + bd->user_disk_0->disk_name); + cy_as_hal_print_message( + "%s: add_disk: " + "disk->part_tbl=0x%x\n", __func__, + (unsigned int) + bd->user_disk_0->part_tbl); + cy_as_hal_print_message( + "%s: add_disk: " + "disk->queue=0x%x\n", __func__, + (unsigned int) + bd->user_disk_0->queue); + cy_as_hal_print_message( + "%s: add_disk: " + "disk->flags=0x%x\n", + __func__, (unsigned int) + bd->user_disk_0->flags); + cy_as_hal_print_message( + "%s: add_disk: " + "disk->driverfs_dev=0x%x\n", + __func__, (unsigned int) + bd->user_disk_0->driverfs_dev); + cy_as_hal_print_message( + "%s: add_disk: " + "disk->slave_dir=0x%x\n", + __func__, (unsigned int) + bd->user_disk_0->slave_dir); + cy_as_hal_print_message( + "%s: add_disk: " + "disk->random=0x%x\n", + __func__, (unsigned int) + bd->user_disk_0->random); + cy_as_hal_print_message( + "%s: add_disk: " + "disk->node_id=0x%x\n", + __func__, (unsigned int) + bd->user_disk_0->node_id); + + #endif + + add_disk(bd->user_disk_0); + + } else if ((bus_num == 1) && + (total_media_count == 2)) { + bd->user_disk_1_read_only = !dev_data.desc_p.writeable; + bd->user_disk_1_blk_size = dev_data.desc_p.block_size; + bd->user_disk_1_type = dev_data.desc_p.type; + bd->user_disk_1_bus_num = bus_num; + bd->user_disk_1->major = major; + bd->user_disk_1->first_minor = (devidx + 1) << CYASBLKDEV_SHIFT; + bd->user_disk_1->minors = 8; + bd->user_disk_1->fops = &cyasblkdev_bdops; + bd->user_disk_1->private_data = bd; + bd->user_disk_1->queue = bd->queue.queue; + bd->dbgprn_flags = DBGPRN_RD_RQ; + bd->user_disk_1_unit_no = lcl_unit_no; + + sprintf(bd->user_disk_1->disk_name, + "cyasblkdevblk%d", (devidx + 1)); + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: disk unit_sz:%lu " + "blk_sz:%d, " + "start_blk:%lu, " + "capacity:%llu\n", + __func__, + (unsigned long) + unit_data.desc_p.unit_size, + unit_data.desc_p.block_size, + (unsigned long) + unit_data.desc_p.start_block, + (uint64_t)disk_cap + ); + #endif + + /*blk_size should always be a + * multiple of 512, set to the max + * to ensure that all accesses + * aligned to the greatest multiple, + * can adjust request to smaller + * block sizes dynamically*/ + if (bd->user_disk_0_blk_size > + bd->user_disk_1_blk_size) { + blk_queue_logical_block_size(bd->queue.queue, + bd->user_disk_0_blk_size); + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: set hard sect_sz:%d\n", + __func__, + bd->user_disk_0_blk_size); + #endif + } else { + blk_queue_logical_block_size(bd->queue.queue, + bd->user_disk_1_blk_size); + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: set hard sect_sz:%d\n", + __func__, + bd->user_disk_1_blk_size); + #endif + } + + set_capacity(bd->user_disk_1, disk_cap); + if (vfat_search) { + bd->user_disk_1_first_sector = + cyasblkdev_get_vfat_offset( + bd->user_disk_1_bus_num, + bd->user_disk_1_unit_no); + } else { + bd->user_disk_1_first_sector + = 0; + } + + add_disk(bd->user_disk_1); + } + + if (lcl_unit_no > 0) { + if (bd->system_disk == NULL) { + bd->system_disk = + alloc_disk(8); + + if (bd->system_disk == NULL) { + kfree(bd); + bd = ERR_PTR(-ENOMEM); + return bd; + } + disk_cap = (uint64_t) + (private_partition_size); + + /* set properties of + * system disk */ + bd->system_disk_read_only = !dev_data.desc_p.writeable; + bd->system_disk_blk_size = dev_data.desc_p.block_size; + bd->system_disk_bus_num = bus_num; + bd->system_disk->major = major; + bd->system_disk->first_minor = + (devidx + 2) << CYASBLKDEV_SHIFT; + bd->system_disk->minors = 8; + bd->system_disk->fops = &cyasblkdev_bdops; + bd->system_disk->private_data = bd; + bd->system_disk->queue = bd->queue.queue; + /* don't search for vfat + * with system disk */ + bd->system_disk_first_sector = 0; + sprintf( + bd->system_disk->disk_name, + "cyasblkdevblk%d", (devidx + 2)); + + set_capacity(bd->system_disk, + disk_cap); + + add_disk(bd->system_disk); + } + #ifndef WESTBRIDGE_NDEBUG + else { + cy_as_hal_print_message( + "%s: system disk already allocated %d\n", + __func__, bus_num); + } + #endif + } +out: + return ret; +} + +static struct cyasblkdev_blk_data *cyasblkdev_blk_alloc(void) +{ + struct cyasblkdev_blk_data *bd; + int ret = 0; + cy_as_return_status_t stat = -1; + int bus_num = 0; + int total_media_count = 0; + int devidx = 0; + DBGPRN_FUNC_NAME; + + total_media_count = 0; + devidx = find_first_zero_bit(dev_use, CYASBLKDEV_NUM_MINORS); + if (devidx >= CYASBLKDEV_NUM_MINORS) + return ERR_PTR(-ENOSPC); + + __set_bit(devidx, dev_use); + __set_bit(devidx + 1, dev_use); + + bd = kzalloc(sizeof(struct cyasblkdev_blk_data), GFP_KERNEL); + if (bd) { + gl_bd = bd; + + spin_lock_init(&bd->lock); + bd->usage = 1; + + /* setup the block_dev_ops pointer*/ + bd->blkops = &cyasblkdev_bdops; + + /* Get the device handle */ + bd->dev_handle = cyasdevice_getdevhandle(); + if (0 == bd->dev_handle) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: get device failed\n", __func__); + #endif + ret = ENODEV; + goto out; + } + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s west bridge device handle:%x\n", + __func__, (uint32_t)bd->dev_handle); + #endif + + /* start the storage api and get a handle to the + * device we are interested in. */ + + /* Error code to use if the conditions are not satisfied. */ + ret = ENOMEDIUM; + + stat = cy_as_misc_release_resource(bd->dev_handle, cy_as_bus_0); + if ((stat != CY_AS_ERROR_SUCCESS) && + (stat != CY_AS_ERROR_RESOURCE_NOT_OWNED)) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: cannot release " + "resource bus 0 - reason code %d\n", + __func__, stat); + #endif + } + + stat = cy_as_misc_release_resource(bd->dev_handle, cy_as_bus_1); + if ((stat != CY_AS_ERROR_SUCCESS) && + (stat != CY_AS_ERROR_RESOURCE_NOT_OWNED)) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: cannot release " + "resource bus 0 - reason code %d\n", + __func__, stat); + #endif + } + + /* start storage stack*/ + stat = cy_as_storage_start(bd->dev_handle, 0, 0x101); + if (stat != CY_AS_ERROR_SUCCESS) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: cannot start storage " + "stack - reason code %d\n", __func__, stat); + #endif + goto out; + } + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: storage started:%d ok\n", + __func__, stat); + #endif + + stat = cy_as_storage_register_callback(bd->dev_handle, + cyasblkdev_storage_callback); + if (stat != CY_AS_ERROR_SUCCESS) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: cannot register callback " + "- reason code %d\n", __func__, stat); + #endif + goto out; + } + + for (bus_num = 0; bus_num < 2; bus_num++) { + stat = cy_as_storage_query_bus(bd->dev_handle, + bus_num, &bd->media_count[bus_num], 0, 0); + if (stat == CY_AS_ERROR_SUCCESS) { + total_media_count = total_media_count + + bd->media_count[bus_num]; + } else { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: cannot query %d, " + "reason code: %d\n", + __func__, bus_num, stat); + #endif + goto out; + } + } + + if (total_media_count == 0) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: no storage media was found\n", __func__); + #endif + goto out; + } else if (total_media_count >= 1) { + if (bd->user_disk_0 == NULL) { + + bd->user_disk_0 = + alloc_disk(8); + if (bd->user_disk_0 == NULL) { + kfree(bd); + bd = ERR_PTR(-ENOMEM); + return bd; + } + } + #ifndef WESTBRIDGE_NDEBUG + else { + cy_as_hal_print_message("%s: no available " + "gen_disk for disk 0, " + "physically inconsistent\n", __func__); + } + #endif + } + + if (total_media_count == 2) { + if (bd->user_disk_1 == NULL) { + bd->user_disk_1 = + alloc_disk(8); + if (bd->user_disk_1 == NULL) { + kfree(bd); + bd = ERR_PTR(-ENOMEM); + return bd; + } + } + #ifndef WESTBRIDGE_NDEBUG + else { + cy_as_hal_print_message("%s: no available " + "gen_disk for media, " + "physically inconsistent\n", __func__); + } + #endif + } + #ifndef WESTBRIDGE_NDEBUG + else if (total_media_count > 2) { + cy_as_hal_print_message("%s: count corrupted = 0x%d\n", + __func__, total_media_count); + } + #endif + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("%s: %d device(s) found\n", + __func__, total_media_count); + #endif + + for (bus_num = 0; bus_num <= 1; bus_num++) { + /*claim storage for cpu */ + stat = cy_as_storage_claim(bd->dev_handle, + bus_num, 0, 0, 0); + if (stat != CY_AS_ERROR_SUCCESS) { + cy_as_hal_print_message("%s: cannot claim " + "%d bus - reason code %d\n", + __func__, bus_num, stat); + goto out; + } + + dev_data.bus = bus_num; + dev_data.device = 0; + + stat = cy_as_storage_query_device(bd->dev_handle, + &dev_data, 0, 0); + if (stat == CY_AS_ERROR_SUCCESS) { + cyasblkdev_add_disks(bus_num, bd, + total_media_count, devidx); + } else if (stat == CY_AS_ERROR_NO_SUCH_DEVICE) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: no device on bus %d\n", + __func__, bus_num); + #endif + } else { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: cannot query %d device " + "- reason code %d\n", + __func__, bus_num, stat); + #endif + goto out; + } + } /* end for (bus_num = 0; bus_num <= 1; bus_num++)*/ + + return bd; + } +out: + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s: bd failed to initialize\n", __func__); + #endif + + kfree(bd); + bd = ERR_PTR(-ret); + return bd; +} + + +/*init west bridge block device */ +static int cyasblkdev_blk_initialize(void) +{ + struct cyasblkdev_blk_data *bd; + int res; + + DBGPRN_FUNC_NAME; + + res = register_blkdev(major, "cyasblkdev"); + + if (res < 0) { + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message(KERN_WARNING + "%s unable to get major %d for cyasblkdev media: %d\n", + __func__, major, res); + #endif + return res; + } + + if (major == 0) + major = res; + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message( + "%s cyasblkdev registered with major number: %d\n", + __func__, major); + #endif + + bd = cyasblkdev_blk_alloc(); + if (IS_ERR(bd)) + return PTR_ERR(bd); + + return 0; +} + +/* start block device */ +static int __init cyasblkdev_blk_init(void) +{ + int res = -ENOMEM; + + DBGPRN_FUNC_NAME; + + /* get the cyasdev handle for future use*/ + cyas_dev_handle = cyasdevice_getdevhandle(); + + if (cyasblkdev_blk_initialize() == 0) + return 0; + + #ifndef WESTBRIDGE_NDEBUG + cy_as_hal_print_message("cyasblkdev init error:%d\n", res); + #endif + return res; +} + + +static void cyasblkdev_blk_deinit(struct cyasblkdev_blk_data *bd) +{ + DBGPRN_FUNC_NAME; + + if (bd) { + int devidx; + + if (bd->user_disk_0 != NULL) { + del_gendisk(bd->user_disk_0); + devidx = bd->user_disk_0->first_minor + >> CYASBLKDEV_SHIFT; + __clear_bit(devidx, dev_use); + } + + if (bd->user_disk_1 != NULL) { + del_gendisk(bd->user_disk_1); + devidx = bd->user_disk_1->first_minor + >> CYASBLKDEV_SHIFT; + __clear_bit(devidx, dev_use); + } + + if (bd->system_disk != NULL) { + del_gendisk(bd->system_disk); + devidx = bd->system_disk->first_minor + >> CYASBLKDEV_SHIFT; + __clear_bit(devidx, dev_use); + } + + cyasblkdev_blk_put(bd); + } +} + +/* block device exit */ +static void __exit cyasblkdev_blk_exit(void) +{ + DBGPRN_FUNC_NAME; + + cyasblkdev_blk_deinit(gl_bd); + unregister_blkdev(major, "cyasblkdev"); + +} + +module_init(cyasblkdev_blk_init); +module_exit(cyasblkdev_blk_exit); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("antioch (cyasblkdev) block device driver"); +MODULE_AUTHOR("cypress semiconductor"); + +/*[]*/ |
