[S390]: Adapt vmlogrdr driver to new IUCV API
Adapt vmlogrdr character device driver to new IUCV API Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Martin Schwidefsky
David S. Miller
parent
c667aac800
commit
c9101c5b3f
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@ -3,7 +3,7 @@
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* character device driver for reading z/VM system service records
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*
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*
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* Copyright (C) 2004 IBM Corporation
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* Copyright 2004 IBM Corporation
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* character device driver for reading z/VM system service records,
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* Version 1.0
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* Author(s): Xenia Tkatschow <xenia@us.ibm.com>
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@ -21,7 +21,7 @@
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#include <asm/cpcmd.h>
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#include <asm/debug.h>
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#include <asm/ebcdic.h>
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#include "../net/iucv.h"
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#include <net/iucv/iucv.h>
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#include <linux/kmod.h>
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#include <linux/cdev.h>
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#include <linux/device.h>
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@ -60,12 +60,11 @@ struct vmlogrdr_priv_t {
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char system_service[8];
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char internal_name[8];
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char recording_name[8];
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u16 pathid;
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struct iucv_path *path;
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int connection_established;
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int iucv_path_severed;
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iucv_MessagePending local_interrupt_buffer;
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struct iucv_message local_interrupt_buffer;
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atomic_t receive_ready;
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iucv_handle_t iucv_handle;
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int minor_num;
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char * buffer;
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char * current_position;
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@ -97,37 +96,19 @@ static struct file_operations vmlogrdr_fops = {
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};
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static u8 iucvMagic[16] = {
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0xF0, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
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0xF0, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40
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static void vmlogrdr_iucv_path_complete(struct iucv_path *, u8 ipuser[16]);
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static void vmlogrdr_iucv_path_severed(struct iucv_path *, u8 ipuser[16]);
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static void vmlogrdr_iucv_message_pending(struct iucv_path *,
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struct iucv_message *);
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static struct iucv_handler vmlogrdr_iucv_handler = {
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.path_complete = vmlogrdr_iucv_path_complete,
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.path_severed = vmlogrdr_iucv_path_severed,
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.message_pending = vmlogrdr_iucv_message_pending,
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};
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static u8 mask[] = {
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
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};
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static u8 iucv_host[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
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static void
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vmlogrdr_iucv_ConnectionComplete(iucv_ConnectionComplete *eib, void *pgm_data);
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static void
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vmlogrdr_iucv_ConnectionSevered(iucv_ConnectionSevered *eib, void *pgm_data);
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static void
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vmlogrdr_iucv_MessagePending(iucv_MessagePending *eib, void *pgm_data);
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static iucv_interrupt_ops_t vmlogrdr_iucvops = {
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.ConnectionComplete = vmlogrdr_iucv_ConnectionComplete,
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.ConnectionSevered = vmlogrdr_iucv_ConnectionSevered,
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.MessagePending = vmlogrdr_iucv_MessagePending,
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};
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static DECLARE_WAIT_QUEUE_HEAD(conn_wait_queue);
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static DECLARE_WAIT_QUEUE_HEAD(read_wait_queue);
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@ -176,28 +157,29 @@ static struct cdev *vmlogrdr_cdev = NULL;
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static int recording_class_AB;
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static void
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vmlogrdr_iucv_ConnectionComplete (iucv_ConnectionComplete * eib,
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void * pgm_data)
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static void vmlogrdr_iucv_path_complete(struct iucv_path *path, u8 ipuser[16])
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{
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struct vmlogrdr_priv_t * logptr = pgm_data;
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struct vmlogrdr_priv_t * logptr = path->private;
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spin_lock(&logptr->priv_lock);
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logptr->connection_established = 1;
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spin_unlock(&logptr->priv_lock);
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wake_up(&conn_wait_queue);
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return;
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}
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static void
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vmlogrdr_iucv_ConnectionSevered (iucv_ConnectionSevered * eib, void * pgm_data)
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static void vmlogrdr_iucv_path_severed(struct iucv_path *path, u8 ipuser[16])
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{
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u8 reason = (u8) eib->ipuser[8];
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struct vmlogrdr_priv_t * logptr = pgm_data;
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struct vmlogrdr_priv_t * logptr = path->private;
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u8 reason = (u8) ipuser[8];
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printk (KERN_ERR "vmlogrdr: connection severed with"
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" reason %i\n", reason);
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iucv_path_sever(path, NULL);
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kfree(path);
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logptr->path = NULL;
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spin_lock(&logptr->priv_lock);
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logptr->connection_established = 0;
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logptr->iucv_path_severed = 1;
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@ -209,10 +191,10 @@ vmlogrdr_iucv_ConnectionSevered (iucv_ConnectionSevered * eib, void * pgm_data)
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}
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static void
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vmlogrdr_iucv_MessagePending (iucv_MessagePending * eib, void * pgm_data)
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static void vmlogrdr_iucv_message_pending(struct iucv_path *path,
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struct iucv_message *msg)
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{
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struct vmlogrdr_priv_t * logptr = pgm_data;
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struct vmlogrdr_priv_t * logptr = path->private;
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/*
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* This function is the bottom half so it should be quick.
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@ -220,15 +202,15 @@ vmlogrdr_iucv_MessagePending (iucv_MessagePending * eib, void * pgm_data)
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* the usage count
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*/
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spin_lock(&logptr->priv_lock);
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memcpy(&(logptr->local_interrupt_buffer), eib, sizeof(*eib));
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memcpy(&logptr->local_interrupt_buffer, msg, sizeof(*msg));
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atomic_inc(&logptr->receive_ready);
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spin_unlock(&logptr->priv_lock);
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wake_up_interruptible(&read_wait_queue);
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}
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static int
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vmlogrdr_get_recording_class_AB(void) {
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static int vmlogrdr_get_recording_class_AB(void)
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{
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char cp_command[]="QUERY COMMAND RECORDING ";
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char cp_response[80];
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char *tail;
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@ -258,8 +240,9 @@ vmlogrdr_get_recording_class_AB(void) {
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}
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static int
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vmlogrdr_recording(struct vmlogrdr_priv_t * logptr, int action, int purge) {
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static int vmlogrdr_recording(struct vmlogrdr_priv_t * logptr,
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int action, int purge)
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{
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char cp_command[80];
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char cp_response[160];
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@ -317,8 +300,7 @@ vmlogrdr_recording(struct vmlogrdr_priv_t * logptr, int action, int purge) {
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}
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static int
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vmlogrdr_open (struct inode *inode, struct file *filp)
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static int vmlogrdr_open (struct inode *inode, struct file *filp)
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{
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int dev_num = 0;
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struct vmlogrdr_priv_t * logptr = NULL;
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@ -328,10 +310,7 @@ vmlogrdr_open (struct inode *inode, struct file *filp)
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dev_num = iminor(inode);
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if (dev_num > MAXMINOR)
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return -ENODEV;
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logptr = &sys_ser[dev_num];
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if (logptr == NULL)
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return -ENODEV;
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/*
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* only allow for blocking reads to be open
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@ -344,52 +323,38 @@ vmlogrdr_open (struct inode *inode, struct file *filp)
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if (logptr->dev_in_use) {
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spin_unlock_bh(&logptr->priv_lock);
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return -EBUSY;
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} else {
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logptr->dev_in_use = 1;
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spin_unlock_bh(&logptr->priv_lock);
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}
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logptr->dev_in_use = 1;
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logptr->connection_established = 0;
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logptr->iucv_path_severed = 0;
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atomic_set(&logptr->receive_ready, 0);
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logptr->buffer_free = 1;
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spin_unlock_bh(&logptr->priv_lock);
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/* set the file options */
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filp->private_data = logptr;
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filp->f_op = &vmlogrdr_fops;
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/* start recording for this service*/
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ret=0;
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if (logptr->autorecording)
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if (logptr->autorecording) {
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ret = vmlogrdr_recording(logptr,1,logptr->autopurge);
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if (ret)
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printk (KERN_WARNING "vmlogrdr: failed to start "
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"recording automatically\n");
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/* Register with iucv driver */
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logptr->iucv_handle = iucv_register_program(iucvMagic,
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logptr->system_service, mask, &vmlogrdr_iucvops,
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logptr);
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if (logptr->iucv_handle == NULL) {
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printk (KERN_ERR "vmlogrdr: failed to register with"
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"iucv driver\n");
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goto not_registered;
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if (ret)
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printk (KERN_WARNING "vmlogrdr: failed to start "
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"recording automatically\n");
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}
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/* create connection to the system service */
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spin_lock_bh(&logptr->priv_lock);
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logptr->connection_established = 0;
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logptr->iucv_path_severed = 0;
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spin_unlock_bh(&logptr->priv_lock);
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connect_rc = iucv_connect (&(logptr->pathid), 10, iucvMagic,
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logptr->system_service, iucv_host, 0,
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NULL, NULL,
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logptr->iucv_handle, NULL);
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logptr->path = iucv_path_alloc(10, 0, GFP_KERNEL);
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if (!logptr->path)
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goto out_dev;
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connect_rc = iucv_path_connect(logptr->path, &vmlogrdr_iucv_handler,
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logptr->system_service, NULL, NULL,
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logptr);
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if (connect_rc) {
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printk (KERN_ERR "vmlogrdr: iucv connection to %s "
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"failed with rc %i \n", logptr->system_service,
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connect_rc);
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goto not_connected;
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goto out_path;
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}
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/* We've issued the connect and now we must wait for a
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@ -398,35 +363,28 @@ vmlogrdr_open (struct inode *inode, struct file *filp)
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*/
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wait_event(conn_wait_queue, (logptr->connection_established)
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|| (logptr->iucv_path_severed));
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if (logptr->iucv_path_severed) {
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goto not_connected;
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}
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if (logptr->iucv_path_severed)
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goto out_record;
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return nonseekable_open(inode, filp);
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not_connected:
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iucv_unregister_program(logptr->iucv_handle);
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logptr->iucv_handle = NULL;
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not_registered:
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out_record:
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if (logptr->autorecording)
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vmlogrdr_recording(logptr,0,logptr->autopurge);
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out_path:
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kfree(logptr->path); /* kfree(NULL) is ok. */
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logptr->path = NULL;
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out_dev:
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logptr->dev_in_use = 0;
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return -EIO;
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}
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static int
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vmlogrdr_release (struct inode *inode, struct file *filp)
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static int vmlogrdr_release (struct inode *inode, struct file *filp)
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{
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int ret;
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struct vmlogrdr_priv_t * logptr = filp->private_data;
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iucv_unregister_program(logptr->iucv_handle);
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logptr->iucv_handle = NULL;
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if (logptr->autorecording) {
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ret = vmlogrdr_recording(logptr,0,logptr->autopurge);
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if (ret)
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@ -439,8 +397,8 @@ vmlogrdr_release (struct inode *inode, struct file *filp)
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}
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static int
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vmlogrdr_receive_data(struct vmlogrdr_priv_t *priv) {
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static int vmlogrdr_receive_data(struct vmlogrdr_priv_t *priv)
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{
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int rc, *temp;
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/* we need to keep track of two data sizes here:
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* The number of bytes we need to receive from iucv and
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@ -461,8 +419,7 @@ vmlogrdr_receive_data(struct vmlogrdr_priv_t *priv) {
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* We need to return the total length of the record
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* + size of FENCE in the first 4 bytes of the buffer.
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*/
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iucv_data_count =
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priv->local_interrupt_buffer.ln1msg2.ipbfln1f;
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iucv_data_count = priv->local_interrupt_buffer.length;
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user_data_count = sizeof(int);
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temp = (int*)priv->buffer;
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*temp= iucv_data_count + sizeof(FENCE);
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@ -474,14 +431,10 @@ vmlogrdr_receive_data(struct vmlogrdr_priv_t *priv) {
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*/
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if (iucv_data_count > NET_BUFFER_SIZE)
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iucv_data_count = NET_BUFFER_SIZE;
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rc = iucv_receive(priv->pathid,
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priv->local_interrupt_buffer.ipmsgid,
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priv->local_interrupt_buffer.iptrgcls,
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buffer,
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iucv_data_count,
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NULL,
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NULL,
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&priv->residual_length);
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rc = iucv_message_receive(priv->path,
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&priv->local_interrupt_buffer,
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0, buffer, iucv_data_count,
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&priv->residual_length);
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spin_unlock_bh(&priv->priv_lock);
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/* An rc of 5 indicates that the record was bigger then
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* the buffer, which is OK for us. A 9 indicates that the
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@ -513,8 +466,8 @@ vmlogrdr_receive_data(struct vmlogrdr_priv_t *priv) {
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}
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static ssize_t
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vmlogrdr_read(struct file *filp, char __user *data, size_t count, loff_t * ppos)
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static ssize_t vmlogrdr_read(struct file *filp, char __user *data,
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size_t count, loff_t * ppos)
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{
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int rc;
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struct vmlogrdr_priv_t * priv = filp->private_data;
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@ -546,8 +499,10 @@ vmlogrdr_read(struct file *filp, char __user *data, size_t count, loff_t * ppos)
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return count;
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}
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static ssize_t
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vmlogrdr_autopurge_store(struct device * dev, struct device_attribute *attr, const char * buf, size_t count) {
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static ssize_t vmlogrdr_autopurge_store(struct device * dev,
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struct device_attribute *attr,
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const char * buf, size_t count)
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{
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struct vmlogrdr_priv_t *priv = dev->driver_data;
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ssize_t ret = count;
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@ -565,8 +520,10 @@ vmlogrdr_autopurge_store(struct device * dev, struct device_attribute *attr, con
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}
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static ssize_t
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vmlogrdr_autopurge_show(struct device *dev, struct device_attribute *attr, char *buf) {
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static ssize_t vmlogrdr_autopurge_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct vmlogrdr_priv_t *priv = dev->driver_data;
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return sprintf(buf, "%u\n", priv->autopurge);
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}
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@ -576,8 +533,10 @@ static DEVICE_ATTR(autopurge, 0644, vmlogrdr_autopurge_show,
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vmlogrdr_autopurge_store);
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static ssize_t
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vmlogrdr_purge_store(struct device * dev, struct device_attribute *attr, const char * buf, size_t count) {
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static ssize_t vmlogrdr_purge_store(struct device * dev,
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struct device_attribute *attr,
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const char * buf, size_t count)
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{
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char cp_command[80];
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char cp_response[80];
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@ -617,9 +576,10 @@ vmlogrdr_purge_store(struct device * dev, struct device_attribute *attr, const c
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static DEVICE_ATTR(purge, 0200, NULL, vmlogrdr_purge_store);
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static ssize_t
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vmlogrdr_autorecording_store(struct device *dev, struct device_attribute *attr, const char *buf,
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size_t count) {
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static ssize_t vmlogrdr_autorecording_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct vmlogrdr_priv_t *priv = dev->driver_data;
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ssize_t ret = count;
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@ -637,8 +597,10 @@ vmlogrdr_autorecording_store(struct device *dev, struct device_attribute *attr,
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}
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static ssize_t
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vmlogrdr_autorecording_show(struct device *dev, struct device_attribute *attr, char *buf) {
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static ssize_t vmlogrdr_autorecording_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct vmlogrdr_priv_t *priv = dev->driver_data;
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return sprintf(buf, "%u\n", priv->autorecording);
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}
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|
|
@ -648,9 +610,10 @@ static DEVICE_ATTR(autorecording, 0644, vmlogrdr_autorecording_show,
|
|||
vmlogrdr_autorecording_store);
|
||||
|
||||
|
||||
static ssize_t
|
||||
vmlogrdr_recording_store(struct device * dev, struct device_attribute *attr, const char * buf, size_t count) {
|
||||
|
||||
static ssize_t vmlogrdr_recording_store(struct device * dev,
|
||||
struct device_attribute *attr,
|
||||
const char * buf, size_t count)
|
||||
{
|
||||
struct vmlogrdr_priv_t *priv = dev->driver_data;
|
||||
ssize_t ret;
|
||||
|
||||
|
|
@ -675,8 +638,9 @@ vmlogrdr_recording_store(struct device * dev, struct device_attribute *attr, con
|
|||
static DEVICE_ATTR(recording, 0200, NULL, vmlogrdr_recording_store);
|
||||
|
||||
|
||||
static ssize_t
|
||||
vmlogrdr_recording_status_show(struct device_driver *driver, char *buf) {
|
||||
static ssize_t vmlogrdr_recording_status_show(struct device_driver *driver,
|
||||
char *buf)
|
||||
{
|
||||
|
||||
char cp_command[] = "QUERY RECORDING ";
|
||||
int len;
|
||||
|
|
@ -709,52 +673,63 @@ static struct device_driver vmlogrdr_driver = {
|
|||
};
|
||||
|
||||
|
||||
static int
|
||||
vmlogrdr_register_driver(void) {
|
||||
static int vmlogrdr_register_driver(void)
|
||||
{
|
||||
int ret;
|
||||
|
||||
/* Register with iucv driver */
|
||||
ret = iucv_register(&vmlogrdr_iucv_handler, 1);
|
||||
if (ret) {
|
||||
printk (KERN_ERR "vmlogrdr: failed to register with"
|
||||
"iucv driver\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
ret = driver_register(&vmlogrdr_driver);
|
||||
if (ret) {
|
||||
printk(KERN_ERR "vmlogrdr: failed to register driver.\n");
|
||||
return ret;
|
||||
goto out_iucv;
|
||||
}
|
||||
|
||||
ret = driver_create_file(&vmlogrdr_driver,
|
||||
&driver_attr_recording_status);
|
||||
if (ret) {
|
||||
printk(KERN_ERR "vmlogrdr: failed to add driver attribute.\n");
|
||||
goto unregdriver;
|
||||
goto out_driver;
|
||||
}
|
||||
|
||||
vmlogrdr_class = class_create(THIS_MODULE, "vmlogrdr");
|
||||
if (IS_ERR(vmlogrdr_class)) {
|
||||
printk(KERN_ERR "vmlogrdr: failed to create class.\n");
|
||||
ret=PTR_ERR(vmlogrdr_class);
|
||||
vmlogrdr_class=NULL;
|
||||
goto unregattr;
|
||||
ret = PTR_ERR(vmlogrdr_class);
|
||||
vmlogrdr_class = NULL;
|
||||
goto out_attr;
|
||||
}
|
||||
return 0;
|
||||
|
||||
unregattr:
|
||||
out_attr:
|
||||
driver_remove_file(&vmlogrdr_driver, &driver_attr_recording_status);
|
||||
unregdriver:
|
||||
out_driver:
|
||||
driver_unregister(&vmlogrdr_driver);
|
||||
out_iucv:
|
||||
iucv_unregister(&vmlogrdr_iucv_handler, 1);
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
vmlogrdr_unregister_driver(void) {
|
||||
static void vmlogrdr_unregister_driver(void)
|
||||
{
|
||||
class_destroy(vmlogrdr_class);
|
||||
vmlogrdr_class = NULL;
|
||||
driver_remove_file(&vmlogrdr_driver, &driver_attr_recording_status);
|
||||
driver_unregister(&vmlogrdr_driver);
|
||||
return;
|
||||
iucv_unregister(&vmlogrdr_iucv_handler, 1);
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
vmlogrdr_register_device(struct vmlogrdr_priv_t *priv) {
|
||||
static int vmlogrdr_register_device(struct vmlogrdr_priv_t *priv)
|
||||
{
|
||||
struct device *dev;
|
||||
int ret;
|
||||
|
||||
|
|
@ -803,9 +778,10 @@ vmlogrdr_register_device(struct vmlogrdr_priv_t *priv) {
|
|||
}
|
||||
|
||||
|
||||
static int
|
||||
vmlogrdr_unregister_device(struct vmlogrdr_priv_t *priv ) {
|
||||
class_device_destroy(vmlogrdr_class, MKDEV(vmlogrdr_major, priv->minor_num));
|
||||
static int vmlogrdr_unregister_device(struct vmlogrdr_priv_t *priv)
|
||||
{
|
||||
class_device_destroy(vmlogrdr_class,
|
||||
MKDEV(vmlogrdr_major, priv->minor_num));
|
||||
if (priv->device != NULL) {
|
||||
sysfs_remove_group(&priv->device->kobj, &vmlogrdr_attr_group);
|
||||
device_unregister(priv->device);
|
||||
|
|
@ -815,8 +791,8 @@ vmlogrdr_unregister_device(struct vmlogrdr_priv_t *priv ) {
|
|||
}
|
||||
|
||||
|
||||
static int
|
||||
vmlogrdr_register_cdev(dev_t dev) {
|
||||
static int vmlogrdr_register_cdev(dev_t dev)
|
||||
{
|
||||
int rc = 0;
|
||||
vmlogrdr_cdev = cdev_alloc();
|
||||
if (!vmlogrdr_cdev) {
|
||||
|
|
@ -836,9 +812,10 @@ vmlogrdr_register_cdev(dev_t dev) {
|
|||
}
|
||||
|
||||
|
||||
static void
|
||||
vmlogrdr_cleanup(void) {
|
||||
static void vmlogrdr_cleanup(void)
|
||||
{
|
||||
int i;
|
||||
|
||||
if (vmlogrdr_cdev) {
|
||||
cdev_del(vmlogrdr_cdev);
|
||||
vmlogrdr_cdev=NULL;
|
||||
|
|
@ -855,8 +832,7 @@ vmlogrdr_cleanup(void) {
|
|||
}
|
||||
|
||||
|
||||
static int
|
||||
vmlogrdr_init(void)
|
||||
static int vmlogrdr_init(void)
|
||||
{
|
||||
int rc;
|
||||
int i;
|
||||
|
|
@ -906,8 +882,7 @@ cleanup:
|
|||
}
|
||||
|
||||
|
||||
static void
|
||||
vmlogrdr_exit(void)
|
||||
static void vmlogrdr_exit(void)
|
||||
{
|
||||
vmlogrdr_cleanup();
|
||||
printk (KERN_INFO "vmlogrdr: driver unloaded\n");
|
||||
|
|
|
|||
Loading…
Reference in New Issue