+++ /dev/null
-/* -*- linux-c -*-
- * drivers/cdrom/viocd.c
- *
- * iSeries Virtual CD Rom
- *
- * Authors: Dave Boutcher <boutcher@us.ibm.com>
- * Ryan Arnold <ryanarn@us.ibm.com>
- * Colin Devilbiss <devilbis@us.ibm.com>
- * Stephen Rothwell
- *
- * (C) Copyright 2000-2004 IBM Corporation
- *
- * 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) anyu 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * This routine provides access to CD ROM drives owned and managed by an
- * OS/400 partition running on the same box as this Linux partition.
- *
- * All operations are performed by sending messages back and forth to
- * the OS/400 partition.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/major.h>
-#include <linux/blkdev.h>
-#include <linux/cdrom.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/dma-mapping.h>
-#include <linux/module.h>
-#include <linux/completion.h>
-#include <linux/proc_fs.h>
-#include <linux/mutex.h>
-#include <linux/seq_file.h>
-#include <linux/scatterlist.h>
-
-#include <asm/vio.h>
-#include <asm/iseries/hv_types.h>
-#include <asm/iseries/hv_lp_event.h>
-#include <asm/iseries/vio.h>
-#include <asm/firmware.h>
-
-#define VIOCD_DEVICE "iseries/vcd"
-
-#define VIOCD_VERS "1.06"
-
-/*
- * Should probably make this a module parameter....sigh
- */
-#define VIOCD_MAX_CD HVMAXARCHITECTEDVIRTUALCDROMS
-
-static DEFINE_MUTEX(viocd_mutex);
-static const struct vio_error_entry viocd_err_table[] = {
- {0x0201, EINVAL, "Invalid Range"},
- {0x0202, EINVAL, "Invalid Token"},
- {0x0203, EIO, "DMA Error"},
- {0x0204, EIO, "Use Error"},
- {0x0205, EIO, "Release Error"},
- {0x0206, EINVAL, "Invalid CD"},
- {0x020C, EROFS, "Read Only Device"},
- {0x020D, ENOMEDIUM, "Changed or Missing Volume (or Varied Off?)"},
- {0x020E, EIO, "Optical System Error (Varied Off?)"},
- {0x02FF, EIO, "Internal Error"},
- {0x3010, EIO, "Changed Volume"},
- {0xC100, EIO, "Optical System Error"},
- {0x0000, 0, NULL},
-};
-
-/*
- * This is the structure we use to exchange info between driver and interrupt
- * handler
- */
-struct viocd_waitevent {
- struct completion com;
- int rc;
- u16 sub_result;
- int changed;
-};
-
-/* this is a lookup table for the true capabilities of a device */
-struct capability_entry {
- char *type;
- int capability;
-};
-
-static struct capability_entry capability_table[] __initdata = {
- { "6330", CDC_LOCK | CDC_DVD_RAM | CDC_RAM },
- { "6331", CDC_LOCK | CDC_DVD_RAM | CDC_RAM },
- { "6333", CDC_LOCK | CDC_DVD_RAM | CDC_RAM },
- { "632A", CDC_LOCK | CDC_DVD_RAM | CDC_RAM },
- { "6321", CDC_LOCK },
- { "632B", 0 },
- { NULL , CDC_LOCK },
-};
-
-/* These are our internal structures for keeping track of devices */
-static int viocd_numdev;
-
-struct disk_info {
- struct gendisk *viocd_disk;
- struct cdrom_device_info viocd_info;
- struct device *dev;
- const char *rsrcname;
- const char *type;
- const char *model;
-};
-static struct disk_info viocd_diskinfo[VIOCD_MAX_CD];
-
-#define DEVICE_NR(di) ((di) - &viocd_diskinfo[0])
-
-static spinlock_t viocd_reqlock;
-
-#define MAX_CD_REQ 1
-
-/* procfs support */
-static int proc_viocd_show(struct seq_file *m, void *v)
-{
- int i;
-
- for (i = 0; i < viocd_numdev; i++) {
- seq_printf(m, "viocd device %d is iSeries resource %10.10s"
- "type %4.4s, model %3.3s\n",
- i, viocd_diskinfo[i].rsrcname,
- viocd_diskinfo[i].type,
- viocd_diskinfo[i].model);
- }
- return 0;
-}
-
-static int proc_viocd_open(struct inode *inode, struct file *file)
-{
- return single_open(file, proc_viocd_show, NULL);
-}
-
-static const struct file_operations proc_viocd_operations = {
- .owner = THIS_MODULE,
- .open = proc_viocd_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static int viocd_blk_open(struct block_device *bdev, fmode_t mode)
-{
- struct disk_info *di = bdev->bd_disk->private_data;
- int ret;
-
- mutex_lock(&viocd_mutex);
- ret = cdrom_open(&di->viocd_info, bdev, mode);
- mutex_unlock(&viocd_mutex);
-
- return ret;
-}
-
-static int viocd_blk_release(struct gendisk *disk, fmode_t mode)
-{
- struct disk_info *di = disk->private_data;
- mutex_lock(&viocd_mutex);
- cdrom_release(&di->viocd_info, mode);
- mutex_unlock(&viocd_mutex);
- return 0;
-}
-
-static int viocd_blk_ioctl(struct block_device *bdev, fmode_t mode,
- unsigned cmd, unsigned long arg)
-{
- struct disk_info *di = bdev->bd_disk->private_data;
- int ret;
-
- mutex_lock(&viocd_mutex);
- ret = cdrom_ioctl(&di->viocd_info, bdev, mode, cmd, arg);
- mutex_unlock(&viocd_mutex);
-
- return ret;
-}
-
-static unsigned int viocd_blk_check_events(struct gendisk *disk,
- unsigned int clearing)
-{
- struct disk_info *di = disk->private_data;
- return cdrom_check_events(&di->viocd_info, clearing);
-}
-
-static const struct block_device_operations viocd_fops = {
- .owner = THIS_MODULE,
- .open = viocd_blk_open,
- .release = viocd_blk_release,
- .ioctl = viocd_blk_ioctl,
- .check_events = viocd_blk_check_events,
-};
-
-static int viocd_open(struct cdrom_device_info *cdi, int purpose)
-{
- struct disk_info *diskinfo = cdi->handle;
- int device_no = DEVICE_NR(diskinfo);
- HvLpEvent_Rc hvrc;
- struct viocd_waitevent we;
-
- init_completion(&we.com);
- hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp,
- HvLpEvent_Type_VirtualIo,
- viomajorsubtype_cdio | viocdopen,
- HvLpEvent_AckInd_DoAck, HvLpEvent_AckType_ImmediateAck,
- viopath_sourceinst(viopath_hostLp),
- viopath_targetinst(viopath_hostLp),
- (u64)&we, VIOVERSION << 16, ((u64)device_no << 48),
- 0, 0, 0);
- if (hvrc != 0) {
- pr_warning("bad rc on HvCallEvent_signalLpEventFast %d\n",
- (int)hvrc);
- return -EIO;
- }
-
- wait_for_completion(&we.com);
-
- if (we.rc) {
- const struct vio_error_entry *err =
- vio_lookup_rc(viocd_err_table, we.sub_result);
- pr_warning("bad rc %d:0x%04X on open: %s\n",
- we.rc, we.sub_result, err->msg);
- return -err->errno;
- }
-
- return 0;
-}
-
-static void viocd_release(struct cdrom_device_info *cdi)
-{
- int device_no = DEVICE_NR((struct disk_info *)cdi->handle);
- HvLpEvent_Rc hvrc;
-
- hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp,
- HvLpEvent_Type_VirtualIo,
- viomajorsubtype_cdio | viocdclose,
- HvLpEvent_AckInd_NoAck, HvLpEvent_AckType_ImmediateAck,
- viopath_sourceinst(viopath_hostLp),
- viopath_targetinst(viopath_hostLp), 0,
- VIOVERSION << 16, ((u64)device_no << 48), 0, 0, 0);
- if (hvrc != 0)
- pr_warning("bad rc on HvCallEvent_signalLpEventFast %d\n",
- (int)hvrc);
-}
-
-/* Send a read or write request to OS/400 */
-static int send_request(struct request *req)
-{
- HvLpEvent_Rc hvrc;
- struct disk_info *diskinfo = req->rq_disk->private_data;
- u64 len;
- dma_addr_t dmaaddr;
- int direction;
- u16 cmd;
- struct scatterlist sg;
-
- BUG_ON(req->nr_phys_segments > 1);
-
- if (rq_data_dir(req) == READ) {
- direction = DMA_FROM_DEVICE;
- cmd = viomajorsubtype_cdio | viocdread;
- } else {
- direction = DMA_TO_DEVICE;
- cmd = viomajorsubtype_cdio | viocdwrite;
- }
-
- sg_init_table(&sg, 1);
- if (blk_rq_map_sg(req->q, req, &sg) == 0) {
- pr_warning("error setting up scatter/gather list\n");
- return -1;
- }
-
- if (dma_map_sg(diskinfo->dev, &sg, 1, direction) == 0) {
- pr_warning("error allocating sg tce\n");
- return -1;
- }
- dmaaddr = sg_dma_address(&sg);
- len = sg_dma_len(&sg);
-
- hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp,
- HvLpEvent_Type_VirtualIo, cmd,
- HvLpEvent_AckInd_DoAck,
- HvLpEvent_AckType_ImmediateAck,
- viopath_sourceinst(viopath_hostLp),
- viopath_targetinst(viopath_hostLp),
- (u64)req, VIOVERSION << 16,
- ((u64)DEVICE_NR(diskinfo) << 48) | dmaaddr,
- (u64)blk_rq_pos(req) * 512, len, 0);
- if (hvrc != HvLpEvent_Rc_Good) {
- pr_warning("hv error on op %d\n", (int)hvrc);
- return -1;
- }
-
- return 0;
-}
-
-static int rwreq;
-
-static void do_viocd_request(struct request_queue *q)
-{
- struct request *req;
-
- while ((rwreq == 0) && ((req = blk_fetch_request(q)) != NULL)) {
- if (req->cmd_type != REQ_TYPE_FS)
- __blk_end_request_all(req, -EIO);
- else if (send_request(req) < 0) {
- pr_warning("unable to send message to OS/400!\n");
- __blk_end_request_all(req, -EIO);
- } else
- rwreq++;
- }
-}
-
-static unsigned int viocd_check_events(struct cdrom_device_info *cdi,
- unsigned int clearing, int disc_nr)
-{
- struct viocd_waitevent we;
- HvLpEvent_Rc hvrc;
- int device_no = DEVICE_NR((struct disk_info *)cdi->handle);
-
- init_completion(&we.com);
-
- /* Send the open event to OS/400 */
- hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp,
- HvLpEvent_Type_VirtualIo,
- viomajorsubtype_cdio | viocdcheck,
- HvLpEvent_AckInd_DoAck, HvLpEvent_AckType_ImmediateAck,
- viopath_sourceinst(viopath_hostLp),
- viopath_targetinst(viopath_hostLp),
- (u64)&we, VIOVERSION << 16, ((u64)device_no << 48),
- 0, 0, 0);
- if (hvrc != 0) {
- pr_warning("bad rc on HvCallEvent_signalLpEventFast %d\n",
- (int)hvrc);
- return 0;
- }
-
- wait_for_completion(&we.com);
-
- /* Check the return code. If bad, assume no change */
- if (we.rc) {
- const struct vio_error_entry *err =
- vio_lookup_rc(viocd_err_table, we.sub_result);
- pr_warning("bad rc %d:0x%04X on check_change: %s; Assuming no change\n",
- we.rc, we.sub_result, err->msg);
- return 0;
- }
-
- return we.changed ? DISK_EVENT_MEDIA_CHANGE : 0;
-}
-
-static int viocd_lock_door(struct cdrom_device_info *cdi, int locking)
-{
- HvLpEvent_Rc hvrc;
- u64 device_no = DEVICE_NR((struct disk_info *)cdi->handle);
- /* NOTE: flags is 1 or 0 so it won't overwrite the device_no */
- u64 flags = !!locking;
- struct viocd_waitevent we;
-
- init_completion(&we.com);
-
- /* Send the lockdoor event to OS/400 */
- hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp,
- HvLpEvent_Type_VirtualIo,
- viomajorsubtype_cdio | viocdlockdoor,
- HvLpEvent_AckInd_DoAck, HvLpEvent_AckType_ImmediateAck,
- viopath_sourceinst(viopath_hostLp),
- viopath_targetinst(viopath_hostLp),
- (u64)&we, VIOVERSION << 16,
- (device_no << 48) | (flags << 32), 0, 0, 0);
- if (hvrc != 0) {
- pr_warning("bad rc on HvCallEvent_signalLpEventFast %d\n",
- (int)hvrc);
- return -EIO;
- }
-
- wait_for_completion(&we.com);
-
- if (we.rc != 0)
- return -EIO;
- return 0;
-}
-
-static int viocd_packet(struct cdrom_device_info *cdi,
- struct packet_command *cgc)
-{
- unsigned int buflen = cgc->buflen;
- int ret = -EIO;
-
- switch (cgc->cmd[0]) {
- case GPCMD_READ_DISC_INFO:
- {
- disc_information *di = (disc_information *)cgc->buffer;
-
- if (buflen >= 2) {
- di->disc_information_length = cpu_to_be16(1);
- ret = 0;
- }
- if (buflen >= 3)
- di->erasable =
- (cdi->ops->capability & ~cdi->mask
- & (CDC_DVD_RAM | CDC_RAM)) != 0;
- }
- break;
- case GPCMD_GET_CONFIGURATION:
- if (cgc->cmd[3] == CDF_RWRT) {
- struct rwrt_feature_desc *rfd = (struct rwrt_feature_desc *)(cgc->buffer + sizeof(struct feature_header));
-
- if ((buflen >=
- (sizeof(struct feature_header) + sizeof(*rfd))) &&
- (cdi->ops->capability & ~cdi->mask
- & (CDC_DVD_RAM | CDC_RAM))) {
- rfd->feature_code = cpu_to_be16(CDF_RWRT);
- rfd->curr = 1;
- ret = 0;
- }
- }
- break;
- default:
- if (cgc->sense) {
- /* indicate Unknown code */
- cgc->sense->sense_key = 0x05;
- cgc->sense->asc = 0x20;
- cgc->sense->ascq = 0x00;
- }
- break;
- }
-
- cgc->stat = ret;
- return ret;
-}
-
-static void restart_all_queues(int first_index)
-{
- int i;
-
- for (i = first_index + 1; i < viocd_numdev; i++)
- if (viocd_diskinfo[i].viocd_disk)
- blk_run_queue(viocd_diskinfo[i].viocd_disk->queue);
- for (i = 0; i <= first_index; i++)
- if (viocd_diskinfo[i].viocd_disk)
- blk_run_queue(viocd_diskinfo[i].viocd_disk->queue);
-}
-
-/* This routine handles incoming CD LP events */
-static void vio_handle_cd_event(struct HvLpEvent *event)
-{
- struct viocdlpevent *bevent;
- struct viocd_waitevent *pwe;
- struct disk_info *di;
- unsigned long flags;
- struct request *req;
-
-
- if (event == NULL)
- /* Notification that a partition went away! */
- return;
- /* First, we should NEVER get an int here...only acks */
- if (hvlpevent_is_int(event)) {
- pr_warning("Yikes! got an int in viocd event handler!\n");
- if (hvlpevent_need_ack(event)) {
- event->xRc = HvLpEvent_Rc_InvalidSubtype;
- HvCallEvent_ackLpEvent(event);
- }
- }
-
- bevent = (struct viocdlpevent *)event;
-
- switch (event->xSubtype & VIOMINOR_SUBTYPE_MASK) {
- case viocdopen:
- if (event->xRc == 0) {
- di = &viocd_diskinfo[bevent->disk];
- blk_queue_logical_block_size(di->viocd_disk->queue,
- bevent->block_size);
- set_capacity(di->viocd_disk,
- bevent->media_size *
- bevent->block_size / 512);
- }
- /* FALLTHROUGH !! */
- case viocdlockdoor:
- pwe = (struct viocd_waitevent *)event->xCorrelationToken;
-return_complete:
- pwe->rc = event->xRc;
- pwe->sub_result = bevent->sub_result;
- complete(&pwe->com);
- break;
-
- case viocdcheck:
- pwe = (struct viocd_waitevent *)event->xCorrelationToken;
- pwe->changed = bevent->flags;
- goto return_complete;
-
- case viocdclose:
- break;
-
- case viocdwrite:
- case viocdread:
- /*
- * Since this is running in interrupt mode, we need to
- * make sure we're not stepping on any global I/O operations
- */
- di = &viocd_diskinfo[bevent->disk];
- spin_lock_irqsave(&viocd_reqlock, flags);
- dma_unmap_single(di->dev, bevent->token, bevent->len,
- ((event->xSubtype & VIOMINOR_SUBTYPE_MASK) == viocdread)
- ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
- req = (struct request *)bevent->event.xCorrelationToken;
- rwreq--;
-
- if (event->xRc != HvLpEvent_Rc_Good) {
- const struct vio_error_entry *err =
- vio_lookup_rc(viocd_err_table,
- bevent->sub_result);
- pr_warning("request %p failed with rc %d:0x%04X: %s\n",
- req, event->xRc,
- bevent->sub_result, err->msg);
- __blk_end_request_all(req, -EIO);
- } else
- __blk_end_request_all(req, 0);
-
- /* restart handling of incoming requests */
- spin_unlock_irqrestore(&viocd_reqlock, flags);
- restart_all_queues(bevent->disk);
- break;
-
- default:
- pr_warning("message with invalid subtype %0x04X!\n",
- event->xSubtype & VIOMINOR_SUBTYPE_MASK);
- if (hvlpevent_need_ack(event)) {
- event->xRc = HvLpEvent_Rc_InvalidSubtype;
- HvCallEvent_ackLpEvent(event);
- }
- }
-}
-
-static int viocd_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
- void *arg)
-{
- return -EINVAL;
-}
-
-static struct cdrom_device_ops viocd_dops = {
- .open = viocd_open,
- .release = viocd_release,
- .check_events = viocd_check_events,
- .lock_door = viocd_lock_door,
- .generic_packet = viocd_packet,
- .audio_ioctl = viocd_audio_ioctl,
- .capability = CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_GENERIC_PACKET | CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_RAM
-};
-
-static int find_capability(const char *type)
-{
- struct capability_entry *entry;
-
- for(entry = capability_table; entry->type; ++entry)
- if(!strncmp(entry->type, type, 4))
- break;
- return entry->capability;
-}
-
-static int viocd_probe(struct vio_dev *vdev, const struct vio_device_id *id)
-{
- struct gendisk *gendisk;
- int deviceno;
- struct disk_info *d;
- struct cdrom_device_info *c;
- struct request_queue *q;
- struct device_node *node = vdev->dev.of_node;
-
- deviceno = vdev->unit_address;
- if (deviceno >= VIOCD_MAX_CD)
- return -ENODEV;
- if (!node)
- return -ENODEV;
-
- if (deviceno >= viocd_numdev)
- viocd_numdev = deviceno + 1;
-
- d = &viocd_diskinfo[deviceno];
- d->rsrcname = of_get_property(node, "linux,vio_rsrcname", NULL);
- d->type = of_get_property(node, "linux,vio_type", NULL);
- d->model = of_get_property(node, "linux,vio_model", NULL);
-
- c = &d->viocd_info;
-
- c->ops = &viocd_dops;
- c->speed = 4;
- c->capacity = 1;
- c->handle = d;
- c->mask = ~find_capability(d->type);
- sprintf(c->name, VIOCD_DEVICE "%c", 'a' + deviceno);
-
- if (register_cdrom(c) != 0) {
- pr_warning("Cannot register viocd CD-ROM %s!\n", c->name);
- goto out;
- }
- pr_info("cd %s is iSeries resource %10.10s type %4.4s, model %3.3s\n",
- c->name, d->rsrcname, d->type, d->model);
- q = blk_init_queue(do_viocd_request, &viocd_reqlock);
- if (q == NULL) {
- pr_warning("Cannot allocate queue for %s!\n", c->name);
- goto out_unregister_cdrom;
- }
- gendisk = alloc_disk(1);
- if (gendisk == NULL) {
- pr_warning("Cannot create gendisk for %s!\n", c->name);
- goto out_cleanup_queue;
- }
- gendisk->major = VIOCD_MAJOR;
- gendisk->first_minor = deviceno;
- strncpy(gendisk->disk_name, c->name,
- sizeof(gendisk->disk_name));
- blk_queue_max_segments(q, 1);
- blk_queue_max_hw_sectors(q, 4096 / 512);
- gendisk->queue = q;
- gendisk->fops = &viocd_fops;
- gendisk->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE |
- GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE;
- set_capacity(gendisk, 0);
- gendisk->private_data = d;
- d->viocd_disk = gendisk;
- d->dev = &vdev->dev;
- gendisk->driverfs_dev = d->dev;
- add_disk(gendisk);
- return 0;
-
-out_cleanup_queue:
- blk_cleanup_queue(q);
-out_unregister_cdrom:
- unregister_cdrom(c);
-out:
- return -ENODEV;
-}
-
-static int viocd_remove(struct vio_dev *vdev)
-{
- struct disk_info *d = &viocd_diskinfo[vdev->unit_address];
-
- unregister_cdrom(&d->viocd_info);
- del_gendisk(d->viocd_disk);
- blk_cleanup_queue(d->viocd_disk->queue);
- put_disk(d->viocd_disk);
- return 0;
-}
-
-/**
- * viocd_device_table: Used by vio.c to match devices that we
- * support.
- */
-static struct vio_device_id viocd_device_table[] __devinitdata = {
- { "block", "IBM,iSeries-viocd" },
- { "", "" }
-};
-MODULE_DEVICE_TABLE(vio, viocd_device_table);
-
-static struct vio_driver viocd_driver = {
- .id_table = viocd_device_table,
- .probe = viocd_probe,
- .remove = viocd_remove,
- .driver = {
- .name = "viocd",
- .owner = THIS_MODULE,
- }
-};
-
-static int __init viocd_init(void)
-{
- int ret = 0;
-
- if (!firmware_has_feature(FW_FEATURE_ISERIES))
- return -ENODEV;
-
- if (viopath_hostLp == HvLpIndexInvalid) {
- vio_set_hostlp();
- /* If we don't have a host, bail out */
- if (viopath_hostLp == HvLpIndexInvalid)
- return -ENODEV;
- }
-
- pr_info("vers " VIOCD_VERS ", hosting partition %d\n", viopath_hostLp);
-
- if (register_blkdev(VIOCD_MAJOR, VIOCD_DEVICE) != 0) {
- pr_warning("Unable to get major %d for %s\n",
- VIOCD_MAJOR, VIOCD_DEVICE);
- return -EIO;
- }
-
- ret = viopath_open(viopath_hostLp, viomajorsubtype_cdio,
- MAX_CD_REQ + 2);
- if (ret) {
- pr_warning("error opening path to host partition %d\n",
- viopath_hostLp);
- goto out_unregister;
- }
-
- /* Initialize our request handler */
- vio_setHandler(viomajorsubtype_cdio, vio_handle_cd_event);
-
- spin_lock_init(&viocd_reqlock);
-
- ret = vio_register_driver(&viocd_driver);
- if (ret)
- goto out_free_info;
-
- proc_create("iSeries/viocd", S_IFREG|S_IRUGO, NULL,
- &proc_viocd_operations);
- return 0;
-
-out_free_info:
- vio_clearHandler(viomajorsubtype_cdio);
- viopath_close(viopath_hostLp, viomajorsubtype_cdio, MAX_CD_REQ + 2);
-out_unregister:
- unregister_blkdev(VIOCD_MAJOR, VIOCD_DEVICE);
- return ret;
-}
-
-static void __exit viocd_exit(void)
-{
- remove_proc_entry("iSeries/viocd", NULL);
- vio_unregister_driver(&viocd_driver);
- viopath_close(viopath_hostLp, viomajorsubtype_cdio, MAX_CD_REQ + 2);
- vio_clearHandler(viomajorsubtype_cdio);
- unregister_blkdev(VIOCD_MAJOR, VIOCD_DEVICE);
-}
-
-module_init(viocd_init);
-module_exit(viocd_exit);
-MODULE_LICENSE("GPL");
projects / karo-tx-linux.git / blobdiff