X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fchar%2Fviotape.c;h=042c8149a6d12248cdbbf2e212628cf497f8f1ea;hb=66d2a5952eab875f1286e04f738ef029afdaf013;hp=232da8c5e66aff5168fd3f37d91465caf1251842;hpb=c0a8d05c8a5db835b20a3465b1be1cfe4752a13c;p=safe%2Fjmp%2Flinux-2.6 diff --git a/drivers/char/viotape.c b/drivers/char/viotape.c index 232da8c..042c814 100644 --- a/drivers/char/viotape.c +++ b/drivers/char/viotape.c @@ -6,7 +6,7 @@ * Authors: Dave Boutcher * Ryan Arnold * Colin Devilbiss - * Stephen Rothwell + * Stephen Rothwell * * (C) Copyright 2000-2004 IBM Corporation * @@ -29,10 +29,8 @@ * * All tape operations are performed by sending messages back and forth to * the OS/400 partition. The format of the messages is defined in - * iSeries/vio.h + * iseries/vio.h */ -#include -#include #include #include #include @@ -44,20 +42,20 @@ #include #include #include -#include #include #include #include #include +#include #include #include - +#include #include -#include -#include +#include +#include #include -#include +#include #define VIOTAPE_VERSION "1.2" #define VIOTAPE_MAXREQ 1 @@ -95,47 +93,6 @@ struct viot_devinfo_struct { #define VIOTAPOP_SETPART 14 #define VIOTAPOP_UNLOAD 15 -struct viotapelpevent { - struct HvLpEvent event; - u32 reserved; - u16 version; - u16 sub_type_result; - u16 tape; - u16 flags; - u32 token; - u64 len; - union { - struct { - u32 tape_op; - u32 count; - } op; - struct { - u32 type; - u32 resid; - u32 dsreg; - u32 gstat; - u32 erreg; - u32 file_no; - u32 block_no; - } get_status; - struct { - u32 block_no; - } get_pos; - } u; -}; - -enum viotapesubtype { - viotapeopen = 0x0001, - viotapeclose = 0x0002, - viotaperead = 0x0003, - viotapewrite = 0x0004, - viotapegetinfo = 0x0005, - viotapeop = 0x0006, - viotapegetpos = 0x0007, - viotapesetpos = 0x0008, - viotapegetstatus = 0x0009 -}; - enum viotaperc { viotape_InvalidRange = 0x0601, viotape_InvalidToken = 0x0602, @@ -226,14 +183,11 @@ static const struct vio_error_entry viotape_err_table[] = { #define VIOT_WRITING 2 /* Our info on the tapes */ -struct tape_descr { - char rsrcname[10]; - char type[4]; - char model[3]; -}; - -static struct tape_descr *viotape_unitinfo; -static dma_addr_t viotape_unitinfo_token; +static struct { + const char *rsrcname; + const char *type; + const char *model; +} viotape_unitinfo[VIOTAPE_MAX_TAPE]; static struct mtget viomtget[VIOTAPE_MAX_TAPE]; @@ -247,7 +201,6 @@ static struct device *tape_device[VIOTAPE_MAX_TAPE]; */ static struct { unsigned char cur_part; - int dev_handle; unsigned char part_stat_rwi[MAX_PARTITIONS]; } state[VIOTAPE_MAX_TAPE]; @@ -296,7 +249,8 @@ static int proc_viotape_open(struct inode *inode, struct file *file) return single_open(file, proc_viotape_show, NULL); } -static struct file_operations proc_viotape_operations = { +static const struct file_operations proc_viotape_operations = { + .owner = THIS_MODULE, .open = proc_viotape_open, .read = seq_read, .llseek = seq_lseek, @@ -385,53 +339,6 @@ int tape_rc_to_errno(int tape_rc, char *operation, int tapeno) return -err->errno; } -/* Get info on all tapes from OS/400 */ -static int get_viotape_info(void) -{ - HvLpEvent_Rc hvrc; - int i; - size_t len = sizeof(*viotape_unitinfo) * VIOTAPE_MAX_TAPE; - struct op_struct *op = get_op_struct(); - - if (op == NULL) - return -ENOMEM; - - viotape_unitinfo = dma_alloc_coherent(iSeries_vio_dev, len, - &viotape_unitinfo_token, GFP_ATOMIC); - if (viotape_unitinfo == NULL) { - free_op_struct(op); - return -ENOMEM; - } - - memset(viotape_unitinfo, 0, len); - - hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp, - HvLpEvent_Type_VirtualIo, - viomajorsubtype_tape | viotapegetinfo, - HvLpEvent_AckInd_DoAck, HvLpEvent_AckType_ImmediateAck, - viopath_sourceinst(viopath_hostLp), - viopath_targetinst(viopath_hostLp), - (u64) (unsigned long) op, VIOVERSION << 16, - viotape_unitinfo_token, len, 0, 0); - if (hvrc != HvLpEvent_Rc_Good) { - printk(VIOTAPE_KERN_WARN "hv error on op %d\n", - (int)hvrc); - free_op_struct(op); - return -EIO; - } - - wait_for_completion(&op->com); - - free_op_struct(op); - - for (i = 0; - ((i < VIOTAPE_MAX_TAPE) && (viotape_unitinfo[i].rsrcname[0])); - i++) - viotape_numdev++; - return 0; -} - - /* Write */ static ssize_t viotap_write(struct file *file, const char *buf, size_t count, loff_t * ppos) @@ -446,7 +353,7 @@ static ssize_t viotap_write(struct file *file, const char *buf, if (op == NULL) return -ENOMEM; - get_dev_info(file->f_dentry->d_inode, &devi); + get_dev_info(file->f_path.dentry->d_inode, &devi); /* * We need to make sure we can send a request. We use @@ -536,7 +443,7 @@ static ssize_t viotap_read(struct file *file, char *buf, size_t count, if (op == NULL) return -ENOMEM; - get_dev_info(file->f_dentry->d_inode, &devi); + get_dev_info(file->f_path.dentry->d_inode, &devi); /* * We need to make sure we can send a request. We use @@ -616,7 +523,7 @@ static int viotap_ioctl(struct inode *inode, struct file *file, if (op == NULL) return -ENOMEM; - get_dev_info(file->f_dentry->d_inode, &devi); + get_dev_info(file->f_path.dentry->d_inode, &devi); down(&reqSem); @@ -771,6 +678,17 @@ free_op: return ret; } +static long viotap_unlocked_ioctl(struct file *file, + unsigned int cmd, unsigned long arg) +{ + long rc; + + lock_kernel(); + rc = viotap_ioctl(file->f_path.dentry->d_inode, file, cmd, arg); + unlock_kernel(); + return rc; +} + static int viotap_open(struct inode *inode, struct file *file) { HvLpEvent_Rc hvrc; @@ -781,7 +699,8 @@ static int viotap_open(struct inode *inode, struct file *file) if (op == NULL) return -ENOMEM; - get_dev_info(file->f_dentry->d_inode, &devi); + lock_kernel(); + get_dev_info(file->f_path.dentry->d_inode, &devi); /* Note: We currently only support one mode! */ if ((devi.devno >= viotape_numdev) || (devi.mode)) { @@ -811,6 +730,7 @@ static int viotap_open(struct inode *inode, struct file *file) free_op: free_op_struct(op); + unlock_kernel(); return ret; } @@ -826,7 +746,7 @@ static int viotap_release(struct inode *inode, struct file *file) return -ENOMEM; init_completion(&op->com); - get_dev_info(file->f_dentry->d_inode, &devi); + get_dev_info(file->f_path.dentry->d_inode, &devi); if (devi.devno >= viotape_numdev) { ret = -ENODEV; @@ -876,13 +796,13 @@ free_op: return ret; } -struct file_operations viotap_fops = { - owner: THIS_MODULE, - read: viotap_read, - write: viotap_write, - ioctl: viotap_ioctl, - open: viotap_open, - release: viotap_release, +const struct file_operations viotap_fops = { + .owner = THIS_MODULE, + .read = viotap_read, + .write = viotap_write, + .unlocked_ioctl = viotap_unlocked_ioctl, + .open = viotap_open, + .release = viotap_release, }; /* Handle interrupt events for tape */ @@ -903,7 +823,6 @@ static void vioHandleTapeEvent(struct HvLpEvent *event) tapeminor = event->xSubtype & VIOMINOR_SUBTYPE_MASK; op = (struct op_struct *)event->xCorrelationToken; switch (tapeminor) { - case viotapegetinfo: case viotapeopen: case viotapeclose: op->rc = tevent->sub_type_result; @@ -944,31 +863,36 @@ static void vioHandleTapeEvent(struct HvLpEvent *event) static int viotape_probe(struct vio_dev *vdev, const struct vio_device_id *id) { - char tapename[32]; int i = vdev->unit_address; int j; + struct device_node *node = vdev->dev.archdata.of_node; - if (i >= viotape_numdev) + if (i >= VIOTAPE_MAX_TAPE) + return -ENODEV; + if (!node) return -ENODEV; + if (i >= viotape_numdev) + viotape_numdev = i + 1; + tape_device[i] = &vdev->dev; + viotape_unitinfo[i].rsrcname = of_get_property(node, + "linux,vio_rsrcname", NULL); + viotape_unitinfo[i].type = of_get_property(node, "linux,vio_type", + NULL); + viotape_unitinfo[i].model = of_get_property(node, "linux,vio_model", + NULL); state[i].cur_part = 0; for (j = 0; j < MAX_PARTITIONS; ++j) state[i].part_stat_rwi[j] = VIOT_IDLE; - class_device_create(tape_class, NULL, MKDEV(VIOTAPE_MAJOR, i), NULL, - "iseries!vt%d", i); - class_device_create(tape_class, NULL, MKDEV(VIOTAPE_MAJOR, i | 0x80), - NULL, "iseries!nvt%d", i); - devfs_mk_cdev(MKDEV(VIOTAPE_MAJOR, i), S_IFCHR | S_IRUSR | S_IWUSR, - "iseries/vt%d", i); - devfs_mk_cdev(MKDEV(VIOTAPE_MAJOR, i | 0x80), - S_IFCHR | S_IRUSR | S_IWUSR, "iseries/nvt%d", i); - sprintf(tapename, "iseries/vt%d", i); - state[i].dev_handle = devfs_register_tape(tapename); - printk(VIOTAPE_KERN_INFO "tape %s is iSeries " + device_create(tape_class, NULL, MKDEV(VIOTAPE_MAJOR, i), NULL, + "iseries!vt%d", i); + device_create(tape_class, NULL, MKDEV(VIOTAPE_MAJOR, i | 0x80), NULL, + "iseries!nvt%d", i); + printk(VIOTAPE_KERN_INFO "tape iseries/vt%d is iSeries " "resource %10.10s type %4.4s, model %3.3s\n", - tapename, viotape_unitinfo[i].rsrcname, + i, viotape_unitinfo[i].rsrcname, viotape_unitinfo[i].type, viotape_unitinfo[i].model); return 0; } @@ -977,11 +901,8 @@ static int viotape_remove(struct vio_dev *vdev) { int i = vdev->unit_address; - devfs_remove("iseries/nvt%d", i); - devfs_remove("iseries/vt%d", i); - devfs_unregister_tape(state[i].dev_handle); - class_device_destroy(tape_class, MKDEV(VIOTAPE_MAJOR, i | 0x80)); - class_device_destroy(tape_class, MKDEV(VIOTAPE_MAJOR, i)); + device_destroy(tape_class, MKDEV(VIOTAPE_MAJOR, i | 0x80)); + device_destroy(tape_class, MKDEV(VIOTAPE_MAJOR, i)); return 0; } @@ -990,7 +911,7 @@ static int viotape_remove(struct vio_dev *vdev) * support. */ static struct vio_device_id viotape_device_table[] __devinitdata = { - { "viotape", "" }, + { "byte", "IBM,iSeries-viotape" }, { "", "" } }; MODULE_DEVICE_TABLE(vio, viotape_device_table); @@ -1009,7 +930,9 @@ static struct vio_driver viotape_driver = { int __init viotap_init(void) { int ret; - struct proc_dir_entry *e; + + if (!firmware_has_feature(FW_FEATURE_ISERIES)) + return -ENODEV; op_struct_list = NULL; if ((ret = add_op_structs(VIOTAPE_MAXREQ)) < 0) { @@ -1055,20 +978,12 @@ int __init viotap_init(void) goto unreg_chrdev; } - if ((ret = get_viotape_info()) < 0) { - printk(VIOTAPE_KERN_WARN "Unable to obtain virtual device information"); - goto unreg_class; - } - ret = vio_register_driver(&viotape_driver); if (ret) goto unreg_class; - e = create_proc_entry("iSeries/viotape", S_IFREG|S_IRUGO, NULL); - if (e) { - e->owner = THIS_MODULE; - e->proc_fops = &proc_viotape_operations; - } + proc_create("iSeries/viotape", S_IFREG|S_IRUGO, NULL, + &proc_viotape_operations); return 0; @@ -1109,19 +1024,10 @@ static int chg_state(int index, unsigned char new_state, struct file *file) /* Cleanup */ static void __exit viotap_exit(void) { - int ret; - remove_proc_entry("iSeries/viotape", NULL); vio_unregister_driver(&viotape_driver); class_destroy(tape_class); - ret = unregister_chrdev(VIOTAPE_MAJOR, "viotape"); - if (ret < 0) - printk(VIOTAPE_KERN_WARN "Error unregistering device: %d\n", - ret); - if (viotape_unitinfo) - dma_free_coherent(iSeries_vio_dev, - sizeof(viotape_unitinfo[0]) * VIOTAPE_MAX_TAPE, - viotape_unitinfo, viotape_unitinfo_token); + unregister_chrdev(VIOTAPE_MAJOR, "viotape"); viopath_close(viopath_hostLp, viomajorsubtype_tape, VIOTAPE_MAXREQ + 2); vio_clearHandler(viomajorsubtype_tape); clear_op_struct_pool();