diff options
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/block/Makefile | 1 | ||||
| -rw-r--r-- | drivers/block/swim_iop.c | 578 |
3 files changed, 0 insertions, 586 deletions
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig index ce9cfcb6071..58c1debf86f 100644 --- a/drivers/block/Kconfig +++ b/drivers/block/Kconfig @@ -28,13 +28,6 @@ config ATARI_FLOPPY tristate "Atari floppy support" depends on ATARI -config BLK_DEV_SWIM_IOP - bool "Macintosh IIfx/Quadra 900/Quadra 950 floppy support (EXPERIMENTAL)" - depends on MAC && EXPERIMENTAL && BROKEN - help - Say Y here to support the SWIM (Super Woz Integrated Machine) IOP - floppy controller on the Macintosh IIfx and Quadra 900/950. - config MAC_FLOPPY tristate "Support for PowerMac floppy" depends on PPC_PMAC && !PPC_PMAC64 diff --git a/drivers/block/Makefile b/drivers/block/Makefile index 410f259a803..dd88e33c1eb 100644 --- a/drivers/block/Makefile +++ b/drivers/block/Makefile @@ -9,7 +9,6 @@ obj-$(CONFIG_MAC_FLOPPY) += swim3.o obj-$(CONFIG_BLK_DEV_FD) += floppy.o obj-$(CONFIG_AMIGA_FLOPPY) += amiflop.o obj-$(CONFIG_ATARI_FLOPPY) += ataflop.o -obj-$(CONFIG_BLK_DEV_SWIM_IOP) += swim_iop.o obj-$(CONFIG_ATARI_ACSI) += acsi.o obj-$(CONFIG_ATARI_SLM) += acsi_slm.o obj-$(CONFIG_AMIGA_Z2RAM) += z2ram.o diff --git a/drivers/block/swim_iop.c b/drivers/block/swim_iop.c deleted file mode 100644 index ed7b06cf3e6..00000000000 --- a/drivers/block/swim_iop.c +++ /dev/null @@ -1,578 +0,0 @@ -/* - * Driver for the SWIM (Super Woz Integrated Machine) IOP - * floppy controller on the Macintosh IIfx and Quadra 900/950 - * - * Written by Joshua M. Thompson (funaho@jurai.org) - * based on the SWIM3 driver (c) 1996 by Paul Mackerras. - * - * 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. - * - * 1999-06-12 (jmt) - Initial implementation. - */ - -/* - * ------------------- - * Theory of Operation - * ------------------- - * - * Since the SWIM IOP is message-driven we implement a simple request queue - * system. One outstanding request may be queued at any given time (this is - * an IOP limitation); only when that request has completed can a new request - * be sent. - */ - -#include <linux/stddef.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/timer.h> -#include <linux/delay.h> -#include <linux/fd.h> -#include <linux/ioctl.h> -#include <linux/blkdev.h> -#include <asm/io.h> -#include <asm/uaccess.h> -#include <asm/mac_iop.h> -#include <asm/swim_iop.h> - -#define DRIVER_VERSION "Version 0.1 (1999-06-12)" - -#define MAX_FLOPPIES 4 - -enum swim_state { - idle, - available, - revalidating, - transferring, - ejecting -}; - -struct floppy_state { - enum swim_state state; - int drive_num; /* device number */ - int secpercyl; /* disk geometry information */ - int secpertrack; - int total_secs; - int write_prot; /* 1 if write-protected, 0 if not, -1 dunno */ - int ref_count; - struct timer_list timeout; - int ejected; - struct wait_queue *wait; - int wanted; - int timeout_pending; -}; - -struct swim_iop_req { - int sent; - int complete; - __u8 command[32]; - struct floppy_state *fs; - void (*done)(struct swim_iop_req *); -}; - -static struct swim_iop_req *current_req; -static int floppy_count; - -static struct floppy_state floppy_states[MAX_FLOPPIES]; -static DEFINE_SPINLOCK(swim_iop_lock); - -#define CURRENT elv_next_request(swim_queue) - -static char *drive_names[7] = { - "not installed", /* DRV_NONE */ - "unknown (1)", /* DRV_UNKNOWN */ - "a 400K drive", /* DRV_400K */ - "an 800K drive" /* DRV_800K */ - "unknown (4)", /* ???? */ - "an FDHD", /* DRV_FDHD */ - "unknown (6)", /* ???? */ - "an Apple HD20" /* DRV_HD20 */ -}; - -int swimiop_init(void); -static void swimiop_init_request(struct swim_iop_req *); -static int swimiop_send_request(struct swim_iop_req *); -static void swimiop_receive(struct iop_msg *); -static void swimiop_status_update(int, struct swim_drvstatus *); -static int swimiop_eject(struct floppy_state *fs); - -static int floppy_ioctl(struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long param); -static int floppy_open(struct inode *inode, struct file *filp); -static int floppy_release(struct inode *inode, struct file *filp); -static int floppy_check_change(struct gendisk *disk); -static int floppy_revalidate(struct gendisk *disk); -static int grab_drive(struct floppy_state *fs, enum swim_state state, - int interruptible); -static void release_drive(struct floppy_state *fs); -static void set_timeout(struct floppy_state *fs, int nticks, - void (*proc)(unsigned long)); -static void fd_request_timeout(unsigned long); -static void do_fd_request(request_queue_t * q); -static void start_request(struct floppy_state *fs); - -static struct block_device_operations floppy_fops = { - .open = floppy_open, - .release = floppy_release, - .ioctl = floppy_ioctl, - .media_changed = floppy_check_change, - .revalidate_disk= floppy_revalidate, -}; - -static struct request_queue *swim_queue; -/* - * SWIM IOP initialization - */ - -int swimiop_init(void) -{ - volatile struct swim_iop_req req; - struct swimcmd_status *cmd = (struct swimcmd_status *) &req.command[0]; - struct swim_drvstatus *ds = &cmd->status; - struct floppy_state *fs; - int i; - - current_req = NULL; - floppy_count = 0; - - if (!iop_ism_present) - return -ENODEV; - - if (register_blkdev(FLOPPY_MAJOR, "fd")) - return -EBUSY; - - swim_queue = blk_init_queue(do_fd_request, &swim_iop_lock); - if (!swim_queue) { - unregister_blkdev(FLOPPY_MAJOR, "fd"); - return -ENOMEM; - } - - printk("SWIM-IOP: %s by Joshua M. Thompson (funaho@jurai.org)\n", - DRIVER_VERSION); - - if (iop_listen(SWIM_IOP, SWIM_CHAN, swimiop_receive, "SWIM") != 0) { - printk(KERN_ERR "SWIM-IOP: IOP channel already in use; can't initialize.\n"); - unregister_blkdev(FLOPPY_MAJOR, "fd"); - blk_cleanup_queue(swim_queue); - return -EBUSY; - } - - printk(KERN_ERR "SWIM_IOP: probing for installed drives.\n"); - - for (i = 0 ; i < MAX_FLOPPIES ; i++) { - memset(&floppy_states[i], 0, sizeof(struct floppy_state)); - fs = &floppy_states[floppy_count]; - - swimiop_init_request(&req); - cmd->code = CMD_STATUS; - cmd->drive_num = i + 1; - if (swimiop_send_request(&req) != 0) continue; - while (!req.complete); - if (cmd->error != 0) { - printk(KERN_ERR "SWIM-IOP: probe on drive %d returned error %d\n", i, (uint) cmd->error); - continue; - } - if (ds->installed != 0x01) continue; - printk("SWIM-IOP: drive %d is %s (%s, %s, %s, %s)\n", i, - drive_names[ds->info.type], - ds->info.external? "ext" : "int", - ds->info.scsi? "scsi" : "floppy", - ds->info.fixed? "fixed" : "removable", - ds->info.secondary? "secondary" : "primary"); - swimiop_status_update(floppy_count, ds); - fs->state = idle; - - init_timer(&fs->timeout); - floppy_count++; - } - printk("SWIM-IOP: detected %d installed drives.\n", floppy_count); - - for (i = 0; i < floppy_count; i++) { - struct gendisk *disk = alloc_disk(1); - if (!disk) - continue; - disk->major = FLOPPY_MAJOR; - disk->first_minor = i; - disk->fops = &floppy_fops; - sprintf(disk->disk_name, "fd%d", i); - disk->private_data = &floppy_states[i]; - disk->queue = swim_queue; - set_capacity(disk, 2880 * 2); - add_disk(disk); - } - - return 0; -} - -static void swimiop_init_request(struct swim_iop_req *req) -{ - req->sent = 0; - req->complete = 0; - req->done = NULL; -} - -static int swimiop_send_request(struct swim_iop_req *req) -{ - unsigned long flags; - int err; - - /* It's doubtful an interrupt routine would try to send */ - /* a SWIM request, but I'd rather play it safe here. */ - - local_irq_save(flags); - - if (current_req != NULL) { - local_irq_restore(flags); - return -ENOMEM; - } - - current_req = req; - - /* Interrupts should be back on for iop_send_message() */ - - local_irq_restore(flags); - - err = iop_send_message(SWIM_IOP, SWIM_CHAN, (void *) req, - sizeof(req->command), (__u8 *) &req->command[0], - swimiop_receive); - - /* No race condition here; we own current_req at this point */ - - if (err) { - current_req = NULL; - } else { - req->sent = 1; - } - return err; -} - -/* - * Receive a SWIM message from the IOP. - * - * This will be called in two cases: - * - * 1. A message has been successfully sent to the IOP. - * 2. An unsolicited message was received from the IOP. - */ - -void swimiop_receive(struct iop_msg *msg) -{ - struct swim_iop_req *req; - struct swimmsg_status *sm; - struct swim_drvstatus *ds; - - req = current_req; - - switch(msg->status) { - case IOP_MSGSTATUS_COMPLETE: - memcpy(&req->command[0], &msg->reply[0], sizeof(req->command)); - req->complete = 1; - if (req->done) (*req->done)(req); - current_req = NULL; - break; - case IOP_MSGSTATUS_UNSOL: - sm = (struct swimmsg_status *) &msg->message[0]; - ds = &sm->status; - swimiop_status_update(sm->drive_num, ds); - iop_complete_message(msg); - break; - } -} - -static void swimiop_status_update(int drive_num, struct swim_drvstatus *ds) -{ - struct floppy_state *fs = &floppy_states[drive_num]; - - fs->write_prot = (ds->write_prot == 0x80); - if ((ds->disk_in_drive != 0x01) && (ds->disk_in_drive != 0x02)) { - fs->ejected = 1; - } else { - fs->ejected = 0; - } - switch(ds->info.type) { - case DRV_400K: - fs->secpercyl = 10; - fs->secpertrack = 10; - fs->total_secs = 800; - break; - case DRV_800K: - fs->secpercyl = 20; - fs->secpertrack = 10; - fs->total_secs = 1600; - break; - case DRV_FDHD: - fs->secpercyl = 36; - fs->secpertrack = 18; - fs->total_secs = 2880; - break; - default: - fs->secpercyl = 0; - fs->secpertrack = 0; - fs->total_secs = 0; - break; - } -} - -static int swimiop_eject(struct floppy_state *fs) -{ - int err, n; - struct swim_iop_req req; - struct swimcmd_eject *cmd = (struct swimcmd_eject *) &req.command[0]; - - err = grab_drive(fs, ejecting, 1); - if (err) return err; - - swimiop_init_request(&req); - cmd->code = CMD_EJECT; - cmd->drive_num = fs->drive_num; - err = swimiop_send_request(&req); - if (err) { - release_drive(fs); - return err; - } - for (n = 2*HZ; n > 0; --n) { - if (req.complete) break; - if (signal_pending(current)) { - err = -EINTR; - break; - } - schedule_timeout_interruptible(1); - } - release_drive(fs); - return cmd->error; -} - -static struct floppy_struct floppy_type = - { 2880,18,2,80,0,0x1B,0x00,0xCF,0x6C,NULL }; /* 7 1.44MB 3.5" */ - -static int floppy_ioctl(struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long param) -{ - struct floppy_state *fs = inode->i_bdev->bd_disk->private_data; - int err; - - if ((cmd & 0x80) && !capable(CAP_SYS_ADMIN)) - return -EPERM; - - switch (cmd) { - case FDEJECT: - if (fs->ref_count != 1) - return -EBUSY; - err = swimiop_eject(fs); - return err; - case FDGETPRM: - if (copy_to_user((void *) param, (void *) &floppy_type, - sizeof(struct floppy_struct))) - return -EFAULT; - return 0; - } - return -ENOTTY; -} - -static int floppy_open(struct inode *inode, struct file *filp) -{ - struct floppy_state *fs = inode->i_bdev->bd_disk->private_data; - - if (fs->ref_count == -1 || filp->f_flags & O_EXCL) - return -EBUSY; - - if ((filp->f_flags & O_NDELAY) == 0 && (filp->f_mode & 3)) { - check_disk_change(inode->i_bdev); - if (fs->ejected) - return -ENXIO; - } - - if ((filp->f_mode & 2) && fs->write_prot) - return -EROFS; - - if (filp->f_flags & O_EXCL) - fs->ref_count = -1; - else - ++fs->ref_count; - - return 0; -} - -static int floppy_release(struct inode *inode, struct file *filp) -{ - struct floppy_state *fs = inode->i_bdev->bd_disk->private_data; - if (fs->ref_count > 0) - fs->ref_count--; - return 0; -} - -static int floppy_check_change(struct gendisk *disk) -{ - struct floppy_state *fs = disk->private_data; - return fs->ejected; -} - -static int floppy_revalidate(struct gendisk *disk) -{ - struct floppy_state *fs = disk->private_data; - grab_drive(fs, revalidating, 0); - /* yadda, yadda */ - release_drive(fs); - return 0; -} - -static void floppy_off(unsigned int nr) -{ -} - -static int grab_drive(struct floppy_state *fs, enum swim_state state, - int interruptible) -{ - unsigned long flags; - - local_irq_save(flags); - if (fs->state != idle) { - ++fs->wanted; - while (fs->state != available) { - if (interruptible && signal_pending(current)) { - --fs->wanted; - local_irq_restore(flags); - return -EINTR; - } - interruptible_sleep_on(&fs->wait); - } - --fs->wanted; - } - fs->state = state; - local_irq_restore(flags); - return 0; -} - -static void release_drive(struct floppy_state *fs) -{ - unsigned long flags; - - local_irq_save(flags); - fs->state = idle; - start_request(fs); - local_irq_restore(flags); -} - -static void set_timeout(struct floppy_state *fs, int nticks, - void (*proc)(unsigned long)) -{ - unsigned long flags; - - local_irq_save(flags); - if (fs->timeout_pending) - del_timer(&fs->timeout); - init_timer(&fs->timeout); - fs->timeout.expires = jiffies + nticks; - fs->timeout.function = proc; - fs->timeout.data = (unsigned long) fs; - add_timer(&fs->timeout); - fs->timeout_pending = 1; - local_irq_restore(flags); -} - -static void do_fd_request(request_queue_t * q) -{ - int i; - - for (i = 0 ; i < floppy_count ; i++) { - start_request(&floppy_states[i]); - } -} - -static void fd_request_complete(struct swim_iop_req *req) -{ - struct floppy_state *fs = req->fs; - struct swimcmd_rw *cmd = (struct swimcmd_rw *) &req->command[0]; - - del_timer(&fs->timeout); - fs->timeout_pending = 0; - fs->state = idle; - if (cmd->error) { - printk(KERN_ERR "SWIM-IOP: error %d on read/write request.\n", cmd->error); - end_request(CURRENT, 0); - } else { - CURRENT->sector += cmd->num_blocks; - CURRENT->current_nr_sectors -= cmd->num_blocks; - if (CURRENT->current_nr_sectors <= 0) { - end_request(CURRENT, 1); - return; - } - } - start_request(fs); -} - -static void fd_request_timeout(unsigned long data) -{ - struct floppy_state *fs = (struct floppy_state *) data; - - fs->timeout_pending = 0; - end_request(CURRENT, 0); - fs->state = idle; -} - -static void start_request(struct floppy_state *fs) -{ - volatile struct swim_iop_req req; - struct swimcmd_rw *cmd = (struct swimcmd_rw *) &req.command[0]; - - if (fs->state == idle && fs->wanted) { - fs->state = available; - wake_up(&fs->wait); - return; - } - while (CURRENT && fs->state == idle) { - if (CURRENT->bh && !buffer_locked(CURRENT->bh)) - panic("floppy: block not locked"); -#if 0 - printk("do_fd_req: dev=%s cmd=%d sec=%ld nr_sec=%ld buf=%p\n", - CURRENT->rq_disk->disk_name, CURRENT->cmd, - CURRENT->sector, CURRENT->nr_sectors, CURRENT->buffer); - printk(" errors=%d current_nr_sectors=%ld\n", - CURRENT->errors, CURRENT->current_nr_sectors); -#endif - - if (CURRENT->sector < 0 || CURRENT->sector >= fs->total_secs) { - end_request(CURRENT, 0); - continue; - } - if (CURRENT->current_nr_sectors == 0) { - end_request(CURRENT, 1); - continue; - } - if (fs->ejected) { - end_request(CURRENT, 0); - continue; - } - - swimiop_init_request(&req); - req.fs = fs; - req.done = fd_request_complete; - - if (CURRENT->cmd == WRITE) { - if (fs->write_prot) { - end_request(CURRENT, 0); - continue; - } - cmd->code = CMD_WRITE; - } else { - cmd->code = CMD_READ; - - } - cmd->drive_num = fs->drive_num; - cmd->buffer = CURRENT->buffer; - cmd->first_block = CURRENT->sector; - cmd->num_blocks = CURRENT->current_nr_sectors; - - if (swimiop_send_request(&req)) { - end_request(CURRENT, 0); - continue; - } - - set_timeout(fs, HZ*CURRENT->current_nr_sectors, - fd_request_timeout); - - fs->state = transferring; - } -} |