diff options
Diffstat (limited to 'target/linux/rb532/files-2.6.23/drivers/block/rb500/bdev.c')
| -rw-r--r-- | target/linux/rb532/files-2.6.23/drivers/block/rb500/bdev.c | 340 |
1 files changed, 0 insertions, 340 deletions
diff --git a/target/linux/rb532/files-2.6.23/drivers/block/rb500/bdev.c b/target/linux/rb532/files-2.6.23/drivers/block/rb500/bdev.c deleted file mode 100644 index f8a9b02d7..000000000 --- a/target/linux/rb532/files-2.6.23/drivers/block/rb500/bdev.c +++ /dev/null @@ -1,340 +0,0 @@ -/* CF-mips driver - This is a block driver for the direct (mmaped) interface to the CF-slot, - found in Routerboard.com's RB532 board - See SDK provided from routerboard.com. - - Module adapted By P.Christeas <p_christeas@yahoo.com>, 2005-6. - Cleaned up and adapted to platform_device by Felix Fietkau <nbd@openwrt.org> - - This work is redistributed under the terms of the GNU General Public License. -*/ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/time.h> -#include <linux/wait.h> -#include <linux/fs.h> -#include <linux/genhd.h> -#include <linux/blkdev.h> -#include <linux/blkpg.h> -#include <linux/hdreg.h> -#include <linux/platform_device.h> - -#include <asm/uaccess.h> -#include <asm/io.h> -#include <asm/gpio.h> - -#include <asm/rc32434/rb.h> - -#ifdef DEBUG -#define DEBUGP printk -#define DLEVEL 1 -#else -#define DEBUGP(format, args...) -#define DLEVEL 0 -#endif - -#define CF_MIPS_MAJOR 13 -#define MAJOR_NR CF_MIPS_MAJOR -#define CF_MAX_PART 16 /* max 15 partitions */ - -#include "ata.h" - -//extern struct block_device_operations cf_bdops; - -// static struct hd_struct cf_parts[CF_MAX_PART]; -// static int cf_part_sizes[CF_MAX_PART]; -// static int cf_hsect_sizes[CF_MAX_PART]; -// static int cf_max_sectors[CF_MAX_PART]; -// static int cf_blksize_sizes[CF_MAX_PART]; - -// static spinlock_t lock = SPIN_LOCK_UNLOCKED; - -// volatile int cf_busy = 0; - -static struct request *active_req = NULL; - -static int cf_open (struct inode *, struct file *); -static int cf_release (struct inode *, struct file *); -static int cf_ioctl (struct inode *, struct file *, unsigned, unsigned long); - -static void cf_request(request_queue_t * q); -static int cf_transfer(const struct request *req); - -/*long (*unlocked_ioctl) (struct file *, unsigned, unsigned long); -long (*compat_ioctl) (struct file *, unsigned, unsigned long);*/ -// int (*direct_access) (struct block_device *, sector_t, unsigned long *); -// int (*media_changed) (struct gendisk *); -// int (*revalidate_disk) (struct gendisk *); - -static struct block_device_operations cf_bdops = { - .owner = THIS_MODULE, - .open = cf_open, - .release = cf_release, - .ioctl = cf_ioctl, - .media_changed = NULL, - .unlocked_ioctl = NULL, - .revalidate_disk = NULL, - .compat_ioctl = NULL, - .direct_access = NULL -}; - - -int cf_mips_probe(struct platform_device *pdev) -{ - struct gendisk* cf_gendisk=NULL; - struct cf_device *cdev = (struct cf_device *) pdev->dev.platform_data; - struct cf_mips_dev *dev; - struct resource *r; - int reg_result; - - reg_result = register_blkdev(MAJOR_NR, "cf-mips"); - if (reg_result < 0) { - printk(KERN_WARNING "cf-mips: can't get major %d\n", MAJOR_NR); - return reg_result; - } - - dev = (struct cf_mips_dev *)kmalloc(sizeof(struct cf_mips_dev),GFP_KERNEL); - if (!dev) - goto out_err; - memset(dev, 0, sizeof(struct cf_mips_dev)); - cdev->dev = dev; - - dev->pin = cdev->gpio_pin; - dev->irq = platform_get_irq_byname(pdev, "cf_irq"); - r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cf_membase"); - dev->base = (void *) r->start; - - if (cf_init(dev)) goto out_err; - printk("init done"); - - spin_lock_init(&dev->lock); - dev->queue = blk_init_queue(cf_request,&dev->lock); - if (!dev->queue){ - printk(KERN_ERR "cf-mips: no mem for queue\n"); - goto out_err; - } - blk_queue_max_sectors(dev->queue,ATA_MAX_SECT_PER_CMD); - - /* For memory devices, it is always better to avoid crossing segments - inside the same request. */ -/* if (dev->dtype==0x848A){ - printk(KERN_INFO "Setting boundary for cf to 0x%x",(dev->block_size*512)-1); - blk_queue_segment_boundary(dev->queue, (dev->block_size*512)-1); - }*/ - - dev->gd = alloc_disk(CF_MAX_PART); - cf_gendisk = dev->gd; - cdev->gd = dev->gd; - if (!cf_gendisk) goto out_err; /* Last of these goto's */ - - cf_gendisk->major = MAJOR_NR; - cf_gendisk->first_minor = 0; - cf_gendisk->queue=dev->queue; - BUG_ON(cf_gendisk->minors != CF_MAX_PART); - strcpy(cf_gendisk->disk_name,"cfa"); - cf_gendisk->fops = &cf_bdops; - cf_gendisk->flags = 0 ; /* is not yet GENHD_FL_REMOVABLE */ - cf_gendisk->private_data=dev; - - set_capacity(cf_gendisk,dev->sectors * CF_KERNEL_MUL); - - /* Let the disk go live */ - add_disk(cf_gendisk); -#if 0 - result = cf_init(); - - /* default cfg for all partitions */ - memset(cf_parts, 0, sizeof (cf_parts[0]) * CF_MAX_PART); - memset(cf_part_sizes, 0, sizeof (cf_part_sizes[0]) * CF_MAX_PART); - for (i = 0; i < CF_MAX_PART; ++i) { - cf_hsect_sizes[i] = CF_SECT_SIZE; - cf_max_sectors[i] = ATA_MAX_SECT_PER_CMD; - cf_blksize_sizes[i] = BLOCK_SIZE; - } - - /* setup info for whole disk (partition 0) */ - cf_part_sizes[0] = cf_sectors / 2; - cf_parts[0].nr_sects = cf_sectors; - - blk_size[MAJOR_NR] = cf_part_sizes; - blksize_size[MAJOR_NR] = cf_blksize_sizes; - max_sectors[MAJOR_NR] = cf_max_sectors; - hardsect_size[MAJOR_NR] = cf_hsect_sizes; - read_ahead[MAJOR_NR] = 8; /* (4kB) */ - - blk_init_queue(BLK_DEFAULT_QUEUE(MAJOR_NR), DEVICE_REQUEST); - - add_gendisk(&cf_gendisk); -#endif -// printk(KERN_INFO "cf-mips partition check: \n"); -// register_disk(cf_gendisk, MKDEV(MAJOR_NR, 0), CF_MAX_PART, -// &cf_bdops, dev->sectors); - return 0; - -out_err: - if (dev->queue){ - blk_cleanup_queue(dev->queue); - } - if (reg_result) { - unregister_blkdev(MAJOR_NR, "cf-mips"); - return reg_result; - } - if (dev){ - cf_cleanup(dev); - kfree(dev); - } - return 1; -} - -static int -cf_mips_remove(struct platform_device *pdev) -{ - struct cf_device *cdev = (struct cf_device *) pdev->dev.platform_data; - struct cf_mips_dev *dev = (struct cf_mips_dev *) cdev->dev; - - unregister_blkdev(MAJOR_NR, "cf-mips"); - blk_cleanup_queue(dev->queue); - - del_gendisk(dev->gd); - cf_cleanup(dev); - return 0; -} - - -static struct platform_driver cf_driver = { - .driver.name = "rb500-cf", - .probe = cf_mips_probe, - .remove = cf_mips_remove, -}; - -static int __init cf_mips_init(void) -{ - printk(KERN_INFO "cf-mips module loaded\n"); - return platform_driver_register(&cf_driver); -} - -static void cf_mips_cleanup(void) -{ - platform_driver_unregister(&cf_driver); - printk(KERN_INFO "cf-mips module removed\n"); -} - -module_init(cf_mips_init); -module_exit(cf_mips_cleanup); - -MODULE_LICENSE("GPL"); -MODULE_ALIAS_BLOCKDEV_MAJOR(CF_MIPS_MAJOR); - - -static int cf_open(struct inode *inode, struct file *filp) -{ - struct cf_mips_dev *dev=inode->i_bdev->bd_disk->private_data; - int minor = MINOR(inode->i_rdev); - - if (minor >= CF_MAX_PART) - return -ENODEV; - //DEBUGP(KERN_INFO "cf-mips module opened, minor %d\n", minor); - spin_lock(&dev->lock); - dev->users++; - spin_unlock(&dev->lock); - filp->private_data=dev; - - /* dirty workaround to set CFRDY GPIO as an input when some other - program sets it as an output */ - gpio_set_value(dev->pin, 0); - return 0; /* success */ -} - -static int cf_release(struct inode *inode, struct file *filp) -{ - int minor = MINOR(inode->i_rdev); - struct cf_mips_dev *dev=inode->i_bdev->bd_disk->private_data; - spin_lock(&dev->lock); - dev->users--; - spin_unlock(&dev->lock); - return 0; -} - -static int cf_ioctl(struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg) -{ - unsigned minor = MINOR(inode->i_rdev); - struct cf_mips_dev *dev=inode->i_bdev->bd_disk->private_data; - - DEBUGP(KERN_INFO "cf_ioctl cmd %u\n", cmd); - switch (cmd) { - case BLKRRPART: /* re-read partition table */ - if (!capable(CAP_SYS_ADMIN)) - return -EACCES; - printk(KERN_INFO "cf-mips partition check: \n"); - register_disk(dev->gd); - return 0; - - case HDIO_GETGEO: - { - struct hd_geometry geo; - geo.cylinders = dev->cyl; - geo.heads = dev->head; - geo.sectors = dev->spt; - geo.start = (*dev->gd->part)[minor].start_sect; - if (copy_to_user((void *) arg, &geo, sizeof (geo))) - return -EFAULT; - } - return 0; - } - - return -EINVAL; /* unknown command */ -} - -static void cf_request(request_queue_t * q) -{ - struct cf_mips_dev* dev; - - struct request * req; - int status; - - /* We could have q->queuedata = dev , but haven't yet. */ - if (active_req) - return; - - while ((req=elv_next_request(q))!=NULL){ - dev=req->rq_disk->private_data; - status=cf_transfer(req); - if (status==CF_TRANS_IN_PROGRESS){ - active_req=req; - return; - } - end_request(req,status); - } -} - -static int cf_transfer(const struct request *req) -{ - struct cf_mips_dev* dev=req->rq_disk->private_data; - - if (!blk_fs_request(req)){ - if (printk_ratelimit()) - printk(KERN_WARNING "cf-mips: skipping non-fs request 0x%x\n",req->cmd[0]); - return CF_TRANS_FAILED; - } - - return cf_do_transfer(dev,req->sector,req->current_nr_sectors,req->buffer,rq_data_dir(req)); -} - -void cf_async_trans_done(struct cf_mips_dev * dev,int result) -{ - struct request *req; - - spin_lock(&dev->lock); - req=active_req; - active_req=NULL; - end_request(req,result); - spin_unlock(&dev->lock); - - spin_lock(&dev->lock); - cf_request(dev->queue); - spin_unlock(&dev->lock); -} - |