Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 2958 insertions, 0 deletions

diff --git a/drivers/ieee1394/raw1394.c b/drivers/ieee1394/raw1394.c
new file mode 100644
index 00000000000..6a08a8982ea
--- /dev/null
+++ b/drivers/ieee1394/raw1394.c
@@ -0,0 +1,2958 @@
+/*
+ * IEEE 1394 for Linux
+ *
+ * Raw interface to the bus
+ *
+ * Copyright (C) 1999, 2000 Andreas E. Bombe
+ *               2001, 2002 Manfred Weihs <weihs@ict.tuwien.ac.at>
+ *                     2002 Christian Toegel <christian.toegel@gmx.at>
+ *
+ * This code is licensed under the GPL.  See the file COPYING in the root
+ * directory of the kernel sources for details.
+ *
+ *
+ * Contributions:
+ *
+ * Manfred Weihs <weihs@ict.tuwien.ac.at>
+ *        configuration ROM manipulation
+ *        address range mapping
+ *        adaptation for new (transparent) loopback mechanism
+ *        sending of arbitrary async packets
+ * Christian Toegel <christian.toegel@gmx.at>
+ *        address range mapping
+ *        lock64 request
+ *        transmit physical packet
+ *        busreset notification control (switch on/off)
+ *        busreset with selection of type (short/long)
+ *        request_reply
+ */
+
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include <linux/poll.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/smp_lock.h>
+#include <linux/interrupt.h>
+#include <linux/vmalloc.h>
+#include <linux/cdev.h>
+#include <asm/uaccess.h>
+#include <asm/atomic.h>
+#include <linux/devfs_fs_kernel.h>
+
+#include "csr1212.h"
+#include "ieee1394.h"
+#include "ieee1394_types.h"
+#include "ieee1394_core.h"
+#include "nodemgr.h"
+#include "hosts.h"
+#include "highlevel.h"
+#include "iso.h"
+#include "ieee1394_transactions.h"
+#include "raw1394.h"
+#include "raw1394-private.h"
+
+#define int2ptr(x) ((void __user *)(unsigned long)x)
+#define ptr2int(x) ((u64)(unsigned long)(void __user *)x)
+
+#ifdef CONFIG_IEEE1394_VERBOSEDEBUG
+#define RAW1394_DEBUG
+#endif
+
+#ifdef RAW1394_DEBUG
+#define DBGMSG(fmt, args...) \
+printk(KERN_INFO "raw1394:" fmt "\n" , ## args)
+#else
+#define DBGMSG(fmt, args...)
+#endif
+
+static LIST_HEAD(host_info_list);
+static int host_count;
+static DEFINE_SPINLOCK(host_info_lock);
+static atomic_t internal_generation = ATOMIC_INIT(0);
+
+static atomic_t iso_buffer_size;
+static const int iso_buffer_max = 4 * 1024 * 1024;	/* 4 MB */
+
+static struct hpsb_highlevel raw1394_highlevel;
+
+static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer,
+		    u64 addr, size_t length, u16 flags);
+static int arm_write(struct hpsb_host *host, int nodeid, int destid,
+		     quadlet_t * data, u64 addr, size_t length, u16 flags);
+static int arm_lock(struct hpsb_host *host, int nodeid, quadlet_t * store,
+		    u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode,
+		    u16 flags);
+static int arm_lock64(struct hpsb_host *host, int nodeid, octlet_t * store,
+		      u64 addr, octlet_t data, octlet_t arg, int ext_tcode,
+		      u16 flags);
+static struct hpsb_address_ops arm_ops = {
+	.read = arm_read,
+	.write = arm_write,
+	.lock = arm_lock,
+	.lock64 = arm_lock64,
+};
+
+static void queue_complete_cb(struct pending_request *req);
+
+static struct pending_request *__alloc_pending_request(int flags)
+{
+	struct pending_request *req;
+
+	req = (struct pending_request *)kmalloc(sizeof(struct pending_request),
+						flags);
+	if (req != NULL) {
+		memset(req, 0, sizeof(struct pending_request));
+		INIT_LIST_HEAD(&req->list);
+	}
+
+	return req;
+}
+
+static inline struct pending_request *alloc_pending_request(void)
+{
+	return __alloc_pending_request(SLAB_KERNEL);
+}
+
+static void free_pending_request(struct pending_request *req)
+{
+	if (req->ibs) {
+		if (atomic_dec_and_test(&req->ibs->refcount)) {
+			atomic_sub(req->ibs->data_size, &iso_buffer_size);
+			kfree(req->ibs);
+		}
+	} else if (req->free_data) {
+		kfree(req->data);
+	}
+	hpsb_free_packet(req->packet);
+	kfree(req);
+}
+
+/* fi->reqlists_lock must be taken */
+static void __queue_complete_req(struct pending_request *req)
+{
+	struct file_info *fi = req->file_info;
+	list_del(&req->list);
+	list_add_tail(&req->list, &fi->req_complete);
+
+	up(&fi->complete_sem);
+	wake_up_interruptible(&fi->poll_wait_complete);
+}
+
+static void queue_complete_req(struct pending_request *req)
+{
+	unsigned long flags;
+	struct file_info *fi = req->file_info;
+
+	spin_lock_irqsave(&fi->reqlists_lock, flags);
+	__queue_complete_req(req);
+	spin_unlock_irqrestore(&fi->reqlists_lock, flags);
+}
+
+static void queue_complete_cb(struct pending_request *req)
+{
+	struct hpsb_packet *packet = req->packet;
+	int rcode = (packet->header[1] >> 12) & 0xf;
+
+	switch (packet->ack_code) {
+	case ACKX_NONE:
+	case ACKX_SEND_ERROR:
+		req->req.error = RAW1394_ERROR_SEND_ERROR;
+		break;
+	case ACKX_ABORTED:
+		req->req.error = RAW1394_ERROR_ABORTED;
+		break;
+	case ACKX_TIMEOUT:
+		req->req.error = RAW1394_ERROR_TIMEOUT;
+		break;
+	default:
+		req->req.error = (packet->ack_code << 16) | rcode;
+		break;
+	}
+
+	if (!((packet->ack_code == ACK_PENDING) && (rcode == RCODE_COMPLETE))) {
+		req->req.length = 0;
+	}
+
+	if ((req->req.type == RAW1394_REQ_ASYNC_READ) ||
+	    (req->req.type == RAW1394_REQ_ASYNC_WRITE) ||
+	    (req->req.type == RAW1394_REQ_ASYNC_STREAM) ||
+	    (req->req.type == RAW1394_REQ_LOCK) ||
+	    (req->req.type == RAW1394_REQ_LOCK64))
+		hpsb_free_tlabel(packet);
+
+	queue_complete_req(req);
+}
+
+static void add_host(struct hpsb_host *host)
+{
+	struct host_info *hi;
+	unsigned long flags;
+
+	hi = (struct host_info *)kmalloc(sizeof(struct host_info), GFP_KERNEL);
+
+	if (hi != NULL) {
+		INIT_LIST_HEAD(&hi->list);
+		hi->host = host;
+		INIT_LIST_HEAD(&hi->file_info_list);
+
+		spin_lock_irqsave(&host_info_lock, flags);
+		list_add_tail(&hi->list, &host_info_list);
+		host_count++;
+		spin_unlock_irqrestore(&host_info_lock, flags);
+	}
+
+	atomic_inc(&internal_generation);
+}
+
+static struct host_info *find_host_info(struct hpsb_host *host)
+{
+	struct host_info *hi;
+
+	list_for_each_entry(hi, &host_info_list, list)
+	    if (hi->host == host)
+		return hi;
+
+	return NULL;
+}
+
+static void remove_host(struct hpsb_host *host)
+{
+	struct host_info *hi;
+	unsigned long flags;
+
+	spin_lock_irqsave(&host_info_lock, flags);
+	hi = find_host_info(host);
+
+	if (hi != NULL) {
+		list_del(&hi->list);
+		host_count--;
+		/*
+		   FIXME: address ranges should be removed
+		   and fileinfo states should be initialized
+		   (including setting generation to
+		   internal-generation ...)
+		 */
+	}
+	spin_unlock_irqrestore(&host_info_lock, flags);
+
+	if (hi == NULL) {
+		printk(KERN_ERR "raw1394: attempt to remove unknown host "
+		       "0x%p\n", host);
+		return;
+	}
+
+	kfree(hi);
+
+	atomic_inc(&internal_generation);
+}
+
+static void host_reset(struct hpsb_host *host)
+{
+	unsigned long flags;
+	struct host_info *hi;
+	struct file_info *fi;
+	struct pending_request *req;
+
+	spin_lock_irqsave(&host_info_lock, flags);
+	hi = find_host_info(host);
+
+	if (hi != NULL) {
+		list_for_each_entry(fi, &hi->file_info_list, list) {
+			if (fi->notification == RAW1394_NOTIFY_ON) {
+				req = __alloc_pending_request(SLAB_ATOMIC);
+
+				if (req != NULL) {
+					req->file_info = fi;
+					req->req.type = RAW1394_REQ_BUS_RESET;
+					req->req.generation =
+					    get_hpsb_generation(host);
+					req->req.misc = (host->node_id << 16)
+					    | host->node_count;
+					if (fi->protocol_version > 3) {
+						req->req.misc |=
+						    (NODEID_TO_NODE
+						     (host->irm_id)
+						     << 8);
+					}
+
+					queue_complete_req(req);
+				}
+			}
+		}
+	}
+	spin_unlock_irqrestore(&host_info_lock, flags);
+}
+
+static void iso_receive(struct hpsb_host *host, int channel, quadlet_t * data,
+			size_t length)
+{
+	unsigned long flags;
+	struct host_info *hi;
+	struct file_info *fi;
+	struct pending_request *req, *req_next;
+	struct iso_block_store *ibs = NULL;
+	LIST_HEAD(reqs);
+
+	if ((atomic_read(&iso_buffer_size) + length) > iso_buffer_max) {
+		HPSB_INFO("dropped iso packet");
+		return;
+	}
+
+	spin_lock_irqsave(&host_info_lock, flags);
+	hi = find_host_info(host);
+
+	if (hi != NULL) {
+		list_for_each_entry(fi, &hi->file_info_list, list) {
+			if (!(fi->listen_channels & (1ULL << channel)))
+				continue;
+
+			req = __alloc_pending_request(SLAB_ATOMIC);
+			if (!req)
+				break;
+
+			if (!ibs) {
+				ibs = kmalloc(sizeof(struct iso_block_store)
+					      + length, SLAB_ATOMIC);
+				if (!ibs) {
+					kfree(req);
+					break;
+				}
+
+				atomic_add(length, &iso_buffer_size);
+				atomic_set(&ibs->refcount, 0);
+				ibs->data_size = length;
+				memcpy(ibs->data, data, length);
+			}
+
+			atomic_inc(&ibs->refcount);
+
+			req->file_info = fi;
+			req->ibs = ibs;
+			req->data = ibs->data;
+			req->req.type = RAW1394_REQ_ISO_RECEIVE;
+			req->req.generation = get_hpsb_generation(host);
+			req->req.misc = 0;
+			req->req.recvb = ptr2int(fi->iso_buffer);
+			req->req.length = min(length, fi->iso_buffer_length);
+
+			list_add_tail(&req->list, &reqs);
+		}
+	}
+	spin_unlock_irqrestore(&host_info_lock, flags);
+
+	list_for_each_entry_safe(req, req_next, &reqs, list)
+	    queue_complete_req(req);
+}
+
+static void fcp_request(struct hpsb_host *host, int nodeid, int direction,
+			int cts, u8 * data, size_t length)
+{
+	unsigned long flags;
+	struct host_info *hi;
+	struct file_info *fi;
+	struct pending_request *req, *req_next;
+	struct iso_block_store *ibs = NULL;
+	LIST_HEAD(reqs);
+
+	if ((atomic_read(&iso_buffer_size) + length) > iso_buffer_max) {
+		HPSB_INFO("dropped fcp request");
+		return;
+	}
+
+	spin_lock_irqsave(&host_info_lock, flags);
+	hi = find_host_info(host);
+
+	if (hi != NULL) {
+		list_for_each_entry(fi, &hi->file_info_list, list) {
+			if (!fi->fcp_buffer)
+				continue;
+
+			req = __alloc_pending_request(SLAB_ATOMIC);
+			if (!req)
+				break;
+
+			if (!ibs) {
+				ibs = kmalloc(sizeof(struct iso_block_store)
+					      + length, SLAB_ATOMIC);
+				if (!ibs) {
+					kfree(req);
+					break;
+				}
+
+				atomic_add(length, &iso_buffer_size);
+				atomic_set(&ibs->refcount, 0);
+				ibs->data_size = length;
+				memcpy(ibs->data, data, length);
+			}
+
+			atomic_inc(&ibs->refcount);
+
+			req->file_info = fi;
+			req->ibs = ibs;
+			req->data = ibs->data;
+			req->req.type = RAW1394_REQ_FCP_REQUEST;
+			req->req.generation = get_hpsb_generation(host);
+			req->req.misc = nodeid | (direction << 16);
+			req->req.recvb = ptr2int(fi->fcp_buffer);
+			req->req.length = length;
+
+			list_add_tail(&req->list, &reqs);
+		}
+	}
+	spin_unlock_irqrestore(&host_info_lock, flags);
+
+	list_for_each_entry_safe(req, req_next, &reqs, list)
+	    queue_complete_req(req);
+}
+
+static ssize_t raw1394_read(struct file *file, char __user * buffer,
+			    size_t count, loff_t * offset_is_ignored)
+{
+	struct file_info *fi = (struct file_info *)file->private_data;
+	struct list_head *lh;
+	struct pending_request *req;
+	ssize_t ret;
+
+	if (count != sizeof(struct raw1394_request)) {
+		return -EINVAL;
+	}
+
+	if (!access_ok(VERIFY_WRITE, buffer, count)) {
+		return -EFAULT;
+	}
+
+	if (file->f_flags & O_NONBLOCK) {
+		if (down_trylock(&fi->complete_sem)) {
+			return -EAGAIN;
+		}
+	} else {
+		if (down_interruptible(&fi->complete_sem)) {
+			return -ERESTARTSYS;
+		}
+	}
+
+	spin_lock_irq(&fi->reqlists_lock);
+	lh = fi->req_complete.next;
+	list_del(lh);
+	spin_unlock_irq(&fi->reqlists_lock);
+
+	req = list_entry(lh, struct pending_request, list);
+
+	if (req->req.length) {
+		if (copy_to_user(int2ptr(req->req.recvb), req->data,
+				 req->req.length)) {
+			req->req.error = RAW1394_ERROR_MEMFAULT;
+		}
+	}
+	if (copy_to_user(buffer, &req->req, sizeof(req->req))) {
+		ret = -EFAULT;
+		goto out;
+	}
+
+	ret = (ssize_t) sizeof(struct raw1394_request);
+      out:
+	free_pending_request(req);
+	return ret;
+}
+
+static int state_opened(struct file_info *fi, struct pending_request *req)
+{
+	if (req->req.type == RAW1394_REQ_INITIALIZE) {
+		switch (req->req.misc) {
+		case RAW1394_KERNELAPI_VERSION:
+		case 3:
+			fi->state = initialized;
+			fi->protocol_version = req->req.misc;
+			req->req.error = RAW1394_ERROR_NONE;
+			req->req.generation = atomic_read(&internal_generation);
+			break;
+
+		default:
+			req->req.error = RAW1394_ERROR_COMPAT;
+			req->req.misc = RAW1394_KERNELAPI_VERSION;
+		}
+	} else {
+		req->req.error = RAW1394_ERROR_STATE_ORDER;
+	}
+
+	req->req.length = 0;
+	queue_complete_req(req);
+	return sizeof(struct raw1394_request);
+}
+
+static int state_initialized(struct file_info *fi, struct pending_request *req)
+{
+	struct host_info *hi;
+	struct raw1394_khost_list *khl;
+
+	if (req->req.generation != atomic_read(&internal_generation)) {
+		req->req.error = RAW1394_ERROR_GENERATION;
+		req->req.generation = atomic_read(&internal_generation);
+		req->req.length = 0;
+		queue_complete_req(req);
+		return sizeof(struct raw1394_request);
+	}
+
+	switch (req->req.type) {
+	case RAW1394_REQ_LIST_CARDS:
+		spin_lock_irq(&host_info_lock);
+		khl = kmalloc(sizeof(struct raw1394_khost_list) * host_count,
+			      SLAB_ATOMIC);
+
+		if (khl != NULL) {
+			req->req.misc = host_count;
+			req->data = (quadlet_t *) khl;
+
+			list_for_each_entry(hi, &host_info_list, list) {
+				khl->nodes = hi->host->node_count;
+				strcpy(khl->name, hi->host->driver->name);
+				khl++;
+			}
+		}
+		spin_unlock_irq(&host_info_lock);
+
+		if (khl != NULL) {
+			req->req.error = RAW1394_ERROR_NONE;
+			req->req.length = min(req->req.length,
+					      (u32) (sizeof
+						     (struct raw1394_khost_list)
+						     * req->req.misc));
+			req->free_data = 1;
+		} else {
+			return -ENOMEM;
+		}
+		break;
+
+	case RAW1394_REQ_SET_CARD:
+		spin_lock_irq(&host_info_lock);
+		if (req->req.misc < host_count) {
+			list_for_each_entry(hi, &host_info_list, list) {
+				if (!req->req.misc--)
+					break;
+			}
+			get_device(&hi->host->device);	// XXX Need to handle failure case
+			list_add_tail(&fi->list, &hi->file_info_list);
+			fi->host = hi->host;
+			fi->state = connected;
+
+			req->req.error = RAW1394_ERROR_NONE;
+			req->req.generation = get_hpsb_generation(fi->host);
+			req->req.misc = (fi->host->node_id << 16)
+			    | fi->host->node_count;
+			if (fi->protocol_version > 3) {
+				req->req.misc |=
+				    NODEID_TO_NODE(fi->host->irm_id) << 8;
+			}
+		} else {
+			req->req.error = RAW1394_ERROR_INVALID_ARG;
+		}
+		spin_unlock_irq(&host_info_lock);
+
+		req->req.length = 0;
+		break;
+
+	default:
+		req->req.error = RAW1394_ERROR_STATE_ORDER;
+		req->req.length = 0;
+		break;
+	}
+
+	queue_complete_req(req);
+	return sizeof(struct raw1394_request);
+}
+
+static void handle_iso_listen(struct file_info *fi, struct pending_request *req)
+{
+	int channel = req->req.misc;
+
+	spin_lock_irq(&host_info_lock);
+	if ((channel > 63) || (channel < -64)) {
+		req->req.error = RAW1394_ERROR_INVALID_ARG;
+	} else if (channel >= 0) {
+		/* allocate channel req.misc */
+		if (fi->listen_channels & (1ULL << channel)) {
+			req->req.error = RAW1394_ERROR_ALREADY;
+		} else {
+			if (hpsb_listen_channel
+			    (&raw1394_highlevel, fi->host, channel)) {
+				req->req.error = RAW1394_ERROR_ALREADY;
+			} else {
+				fi->listen_channels |= 1ULL << channel;
+				fi->iso_buffer = int2ptr(req->req.recvb);
+				fi->iso_buffer_length = req->req.length;
+			}
+		}
+	} else {
+		/* deallocate channel (one's complement neg) req.misc */
+		channel = ~channel;
+
+		if (fi->listen_channels & (1ULL << channel)) {
+			hpsb_unlisten_channel(&raw1394_highlevel, fi->host,
+					      channel);
+			fi->listen_channels &= ~(1ULL << channel);
+		} else {
+			req->req.error = RAW1394_ERROR_INVALID_ARG;
+		}
+	}
+
+	req->req.length = 0;
+	queue_complete_req(req);
+	spin_unlock_irq(&host_info_lock);
+}
+
+static void handle_fcp_listen(struct file_info *fi, struct pending_request *req)
+{
+	if (req->req.misc) {
+		if (fi->fcp_buffer) {
+			req->req.error = RAW1394_ERROR_ALREADY;
+		} else {
+			fi->fcp_buffer = int2ptr(req->req.recvb);
+		}
+	} else {
+		if (!fi->fcp_buffer) {
+			req->req.error = RAW1394_ERROR_ALREADY;
+		} else {
+			fi->fcp_buffer = NULL;
+		}
+	}
+
+	req->req.length = 0;
+	queue_complete_req(req);
+}
+
+static int handle_async_request(struct file_info *fi,
+				struct pending_request *req, int node)
+{
+	struct hpsb_packet *packet = NULL;
+	u64 addr = req->req.address & 0xffffffffffffULL;
+
+	switch (req->req.type) {
+	case RAW1394_REQ_ASYNC_READ:
+		DBGMSG("read_request called");
+		packet =
+		    hpsb_make_readpacket(fi->host, node, addr, req->req.length);
+
+		if (!packet)
+			return -ENOMEM;
+
+		if (req->req.length == 4)
+			req->data = &packet->header[3];
+		else
+			req->data = packet->data;
+
+		break;
+
+	case RAW1394_REQ_ASYNC_WRITE:
+		DBGMSG("write_request called");
+
+		packet = hpsb_make_writepacket(fi->host, node, addr, NULL,
+					       req->req.length);
+		if (!packet)
+			return -ENOMEM;
+
+		if (req->req.length == 4) {
+			if (copy_from_user
+			    (&packet->header[3], int2ptr(req->req.sendb),
+			     req->req.length))
+				req->req.error = RAW1394_ERROR_MEMFAULT;
+		} else {
+			if (copy_from_user
+			    (packet->data, int2ptr(req->req.sendb),
+			     req->req.length))
+				req->req.error = RAW1394_ERROR_MEMFAULT;
+		}
+
+		req->req.length = 0;
+		break;
+
+	case RAW1394_REQ_ASYNC_STREAM:
+		DBGMSG("stream_request called");
+
+		packet =
+		    hpsb_make_streampacket(fi->host, NULL, req->req.length,
+					   node & 0x3f /*channel */ ,
+					   (req->req.misc >> 16) & 0x3,
+					   req->req.misc & 0xf);
+		if (!packet)
+			return -ENOMEM;
+
+		if (copy_from_user(packet->data, int2ptr(req->req.sendb),
+				   req->req.length))
+			req->req.error = RAW1394_ERROR_MEMFAULT;
+
+		req->req.length = 0;
+		break;
+
+	case RAW1394_REQ_LOCK:
+		DBGMSG("lock_request called");
+		if ((req->req.misc == EXTCODE_FETCH_ADD)
+		    || (req->req.misc == EXTCODE_LITTLE_ADD)) {
+			if (req->req.length != 4) {
+				req->req.error = RAW1394_ERROR_INVALID_ARG;
+				break;
+			}
+		} else {
+			if (req->req.length != 8) {
+				req->req.error = RAW1394_ERROR_INVALID_ARG;
+				break;
+			}
+		}
+
+		packet = hpsb_make_lockpacket(fi->host, node, addr,
+					      req->req.misc, NULL, 0);
+		if (!packet)
+			return -ENOMEM;
+
+		if (copy_from_user(packet->data, int2ptr(req->req.sendb),
+				   req->req.length)) {
+			req->req.error = RAW1394_ERROR_MEMFAULT;
+			break;
+		}
+
+		req->data = packet->data;
+		req->req.length = 4;
+		break;
+
+	case RAW1394_REQ_LOCK64:
+		DBGMSG("lock64_request called");
+		if ((req->req.misc == EXTCODE_FETCH_ADD)
+		    || (req->req.misc == EXTCODE_LITTLE_ADD)) {
+			if (req->req.length != 8) {
+				req->req.error = RAW1394_ERROR_INVALID_ARG;
+				break;
+			}
+		} else {
+			if (req->req.length != 16) {
+				req->req.error = RAW1394_ERROR_INVALID_ARG;
+				break;
+			}
+		}
+		packet = hpsb_make_lock64packet(fi->host, node, addr,
+						req->req.misc, NULL, 0);
+		if (!packet)
+			return -ENOMEM;
+
+		if (copy_from_user(packet->data, int2ptr(req->req.sendb),
+				   req->req.length)) {
+			req->req.error = RAW1394_ERROR_MEMFAULT;
+			break;
+		}
+
+		req->data = packet->data;
+		req->req.length = 8;
+		break;
+
+	default:
+		req->req.error = RAW1394_ERROR_STATE_ORDER;
+	}
+
+	req->packet = packet;
+
+	if (req->req.error) {
+		req->req.length = 0;
+		queue_complete_req(req);
+		return sizeof(struct raw1394_request);
+	}
+
+	hpsb_set_packet_complete_task(packet,
+				      (void (*)(void *))queue_complete_cb, req);
+
+	spin_lock_irq(&fi->reqlists_lock);
+	list_add_tail(&req->list, &fi->req_pending);
+	spin_unlock_irq(&fi->reqlists_lock);
+
+	packet->generation = req->req.generation;
+
+	if (hpsb_send_packet(packet) < 0) {
+		req->req.error = RAW1394_ERROR_SEND_ERROR;
+		req->req.length = 0;
+		hpsb_free_tlabel(packet);
+		queue_complete_req(req);
+	}
+	return sizeof(struct raw1394_request);
+}
+
+static int handle_iso_send(struct file_info *fi, struct pending_request *req,
+			   int channel)
+{
+	struct hpsb_packet *packet;
+
+	packet = hpsb_make_isopacket(fi->host, req->req.length, channel & 0x3f,
+				     (req->req.misc >> 16) & 0x3,
+				     req->req.misc & 0xf);
+	if (!packet)
+		return -ENOMEM;
+
+	packet->speed_code = req->req.address & 0x3;
+
+	req->packet = packet;
+
+	if (copy_from_user(packet->data, int2ptr(req->req.sendb),
+			   req->req.length)) {
+		req->req.error = RAW1394_ERROR_MEMFAULT;
+		req->req.length = 0;
+		queue_complete_req(req);
+		return sizeof(struct raw1394_request);
+	}
+
+	req->req.length = 0;
+	hpsb_set_packet_complete_task(packet,
+				      (void (*)(void *))queue_complete_req,
+				      req);
+
+	spin_lock_irq(&fi->reqlists_lock);
+	list_add_tail(&req->list, &fi->req_pending);
+	spin_unlock_irq(&fi->reqlists_lock);
+
+	/* Update the generation of the packet just before sending. */
+	packet->generation = req->req.generation;
+
+	if (hpsb_send_packet(packet) < 0) {
+		req->req.error = RAW1394_ERROR_SEND_ERROR;
+		queue_complete_req(req);
+	}
+
+	return sizeof(struct raw1394_request);
+}
+
+static int handle_async_send(struct file_info *fi, struct pending_request *req)
+{
+	struct hpsb_packet *packet;
+	int header_length = req->req.misc & 0xffff;
+	int expect_response = req->req.misc >> 16;
+
+	if ((header_length > req->req.length) || (header_length < 12)) {
+		req->req.error = RAW1394_ERROR_INVALID_ARG;
+		req->req.length = 0;
+		queue_complete_req(req);
+		return sizeof(struct raw1394_request);
+	}
+
+	packet = hpsb_alloc_packet(req->req.length - header_length);
+	req->packet = packet;
+	if (!packet)
+		return -ENOMEM;
+
+	if (copy_from_user(packet->header, int2ptr(req->req.sendb),
+			   header_length)) {
+		req->req.error = RAW1394_ERROR_MEMFAULT;
+		req->req.length = 0;
+		queue_complete_req(req);
+		return sizeof(struct raw1394_request);
+	}
+
+	if (copy_from_user
+	    (packet->data, int2ptr(req->req.sendb) + header_length,
+	     packet->data_size)) {
+		req->req.error = RAW1394_ERROR_MEMFAULT;
+		req->req.length = 0;
+		queue_complete_req(req);
+		return sizeof(struct raw1394_request);
+	}
+
+	packet->type = hpsb_async;
+	packet->node_id = packet->header[0] >> 16;
+	packet->tcode = (packet->header[0] >> 4) & 0xf;
+	packet->tlabel = (packet->header[0] >> 10) & 0x3f;
+	packet->host = fi->host;
+	packet->expect_response = expect_response;
+	packet->header_size = header_length;
+	packet->data_size = req->req.length - header_length;
+
+	req->req.length = 0;
+	hpsb_set_packet_complete_task(packet,
+				      (void (*)(void *))queue_complete_cb, req);
+
+	spin_lock_irq(&fi->reqlists_lock);
+	list_add_tail(&req->list, &fi->req_pending);
+	spin_unlock_irq(&fi->reqlists_lock);
+
+	/* Update the generation of the packet just before sending. */
+	packet->generation = req->req.generation;
+
+	if (hpsb_send_packet(packet) < 0) {
+		req->req.error = RAW1394_ERROR_SEND_ERROR;
+		queue_complete_req(req);
+	}
+
+	return sizeof(struct raw1394_request);
+}
+
+static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer,
+		    u64 addr, size_t length, u16 flags)
+{
+	struct pending_request *req;
+	struct host_info *hi;
+	struct file_info *fi = NULL;
+	struct list_head *entry;
+	struct arm_addr *arm_addr = NULL;
+	struct arm_request *arm_req = NULL;
+	struct arm_response *arm_resp = NULL;
+	int found = 0, size = 0, rcode = -1;
+	struct arm_request_response *arm_req_resp = NULL;
+
+	DBGMSG("arm_read  called by node: %X"
+	       "addr: %4.4x %8.8x length: %Zu", nodeid,
+	       (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF),
+	       length);
+	spin_lock(&host_info_lock);
+	hi = find_host_info(host);	/* search address-entry */
+	if (hi != NULL) {
+		list_for_each_entry(fi, &hi->file_info_list, list) {
+			entry = fi->addr_list.next;
+			while (entry != &(fi->addr_list)) {
+				arm_addr =
+				    list_entry(entry, struct arm_addr,
+					       addr_list);
+				if (((arm_addr->start) <= (addr))
+				    && ((arm_addr->end) >= (addr + length))) {
+					found = 1;
+					break;
+				}
+				entry = entry->next;
+			}
+			if (found) {
+				break;
+			}
+		}
+	}
+	rcode = -1;
+	if (!found) {
+		printk(KERN_ERR "raw1394: arm_read FAILED addr_entry not found"
+		       " -> rcode_address_error\n");
+		spin_unlock(&host_info_lock);
+		return (RCODE_ADDRESS_ERROR);
+	} else {
+		DBGMSG("arm_read addr_entry FOUND");
+	}
+	if (arm_addr->rec_length < length) {
+		DBGMSG("arm_read blocklength too big -> rcode_data_error");
+		rcode = RCODE_DATA_ERROR;	/* hardware error, data is unavailable */
+	}
+	if (rcode == -1) {
+		if (arm_addr->access_rights & ARM_READ) {
+			if (!(arm_addr->client_transactions & ARM_READ)) {
+				memcpy(buffer,
+				       (arm_addr->addr_space_buffer) + (addr -
+									(arm_addr->
+									 start)),
+				       length);
+				DBGMSG("arm_read -> (rcode_complete)");
+				rcode = RCODE_COMPLETE;
+			}
+		} else {
+			rcode = RCODE_TYPE_ERROR;	/* function not allowed */
+			DBGMSG("arm_read -> rcode_type_error (access denied)");
+		}
+	}
+	if (arm_addr->notification_options & ARM_READ) {
+		DBGMSG("arm_read -> entering notification-section");
+		req = __alloc_pending_request(SLAB_ATOMIC);
+		if (!req) {
+			DBGMSG("arm_read -> rcode_conflict_error");
+			spin_unlock(&host_info_lock);
+			return (RCODE_CONFLICT_ERROR);	/* A resource conflict was detected.
+							   The request may be retried */
+		}
+		if (rcode == RCODE_COMPLETE) {
+			size =
+			    sizeof(struct arm_request) +
+			    sizeof(struct arm_response) +
+			    length * sizeof(byte_t) +
+			    sizeof(struct arm_request_response);
+		} else {
+			size =
+			    sizeof(struct arm_request) +
+			    sizeof(struct arm_response) +
+			    sizeof(struct arm_request_response);
+		}
+		req->data = kmalloc(size, SLAB_ATOMIC);
+		if (!(req->data)) {
+			free_pending_request(req);
+			DBGMSG("arm_read -> rcode_conflict_error");
+			spin_unlock(&host_info_lock);
+			return (RCODE_CONFLICT_ERROR);	/* A resource conflict was detected.
+							   The request may be retried */
+		}
+		req->free_data = 1;
+		req->file_info = fi;
+		req->req.type = RAW1394_REQ_ARM;
+		req->req.generation = get_hpsb_generation(host);
+		req->req.misc =
+		    (((length << 16) & (0xFFFF0000)) | (ARM_READ & 0xFF));
+		req->req.tag = arm_addr->arm_tag;
+		req->req.recvb = arm_addr->recvb;
+		req->req.length = size;
+		arm_req_resp = (struct arm_request_response *)(req->data);
+		arm_req = (struct arm_request *)((byte_t *) (req->data) +
+						 (sizeof
+						  (struct
+						   arm_request_response)));
+		arm_resp =
+		    (struct arm_response *)((byte_t *) (arm_req) +
+					    (sizeof(struct arm_request)));
+		arm_req->buffer = NULL;
+		arm_resp->buffer = NULL;
+		if (rcode == RCODE_COMPLETE) {
+			byte_t *buf =
+			    (byte_t *) arm_resp + sizeof(struct arm_response);
+			memcpy(buf,
+			       (arm_addr->addr_space_buffer) + (addr -
+								(arm_addr->
+								 start)),
+			       length);
+			arm_resp->buffer =
+			    int2ptr((arm_addr->recvb) +
+				    sizeof(struct arm_request_response) +
+				    sizeof(struct arm_request) +
+				    sizeof(struct arm_response));
+		}
+		arm_resp->buffer_length =
+		    (rcode == RCODE_COMPLETE) ? length : 0;
+		arm_resp->response_code = rcode;
+		arm_req->buffer_length = 0;
+		arm_req->generation = req->req.generation;
+		arm_req->extended_transaction_code = 0;
+		arm_req->destination_offset = addr;
+		arm_req->source_nodeid = nodeid;
+		arm_req->destination_nodeid = host->node_id;
+		arm_req->tlabel = (flags >> 10) & 0x3f;
+		arm_req->tcode = (flags >> 4) & 0x0f;
+		arm_req_resp->request = int2ptr((arm_addr->recvb) +
+						sizeof(struct
+						       arm_request_response));
+		arm_req_resp->response =
+		    int2ptr((arm_addr->recvb) +
+			    sizeof(struct arm_request_response) +
+			    sizeof(struct arm_request));
+		queue_complete_req(req);
+	}
+	spin_unlock(&host_info_lock);
+	return (rcode);
+}
+
+static int arm_write(struct hpsb_host *host, int nodeid, int destid,
+		     quadlet_t * data, u64 addr, size_t length, u16 flags)
+{
+	struct pending_request *req;
+	struct host_info *hi;
+	struct file_info *fi = NULL;
+	struct list_head *entry;
+	struct arm_addr *arm_addr = NULL;
+	struct arm_request *arm_req = NULL;
+	struct arm_response *arm_resp = NULL;
+	int found = 0, size = 0, rcode = -1, length_conflict = 0;
+	struct arm_request_response *arm_req_resp = NULL;
+
+	DBGMSG("arm_write called by node: %X"
+	       "addr: %4.4x %8.8x length: %Zu", nodeid,
+	       (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF),
+	       length);
+	spin_lock(&host_info_lock);
+	hi = find_host_info(host);	/* search address-entry */
+	if (hi != NULL) {
+		list_for_each_entry(fi, &hi->file_info_list, list) {
+			entry = fi->addr_list.next;
+			while (entry != &(fi->addr_list)) {
+				arm_addr =
+				    list_entry(entry, struct arm_addr,
+					       addr_list);
+				if (((arm_addr->start) <= (addr))
+				    && ((arm_addr->end) >= (addr + length))) {
+					found = 1;
+					break;
+				}
+				entry = entry->next;
+			}
+			if (found) {
+				break;
+			}
+		}
+	}
+	rcode = -1;
+	if (!found) {
+		printk(KERN_ERR "raw1394: arm_write FAILED addr_entry not found"
+		       " -> rcode_address_error\n");
+		spin_unlock(&host_info_lock);
+		return (RCODE_ADDRESS_ERROR);
+	} else {
+		DBGMSG("arm_write addr_entry FOUND");
+	}
+	if (arm_addr->rec_length < length) {
+		DBGMSG("arm_write blocklength too big -> rcode_data_error");
+		length_conflict = 1;
+		rcode = RCODE_DATA_ERROR;	/* hardware error, data is unavailable */
+	}
+	if (rcode == -1) {
+		if (arm_addr->access_rights & ARM_WRITE) {
+			if (!(arm_addr->client_transactions & ARM_WRITE)) {
+				memcpy((arm_addr->addr_space_buffer) +
+				       (addr - (arm_addr->start)), data,
+				       length);
+				DBGMSG("arm_write -> (rcode_complete)");
+				rcode = RCODE_COMPLETE;
+			}
+		} else {
+			rcode = RCODE_TYPE_ERROR;	/* function not allowed */
+			DBGMSG("arm_write -> rcode_type_error (access denied)");
+		}
+	}
+	if (arm_addr->notification_options & ARM_WRITE) {
+		DBGMSG("arm_write -> entering notification-section");
+		req = __alloc_pending_request(SLAB_ATOMIC);
+		if (!req) {
+			DBGMSG("arm_write -> rcode_conflict_error");
+			spin_unlock(&host_info_lock);
+			return (RCODE_CONFLICT_ERROR);	/* A resource conflict was detected.
+							   The request my be retried */
+		}
+		size =
+		    sizeof(struct arm_request) + sizeof(struct arm_response) +
+		    (length) * sizeof(byte_t) +
+		    sizeof(struct arm_request_response);
+		req->data = kmalloc(size, SLAB_ATOMIC);
+		if (!(req->data)) {
+			free_pending_request(req);
+			DBGMSG("arm_write -> rcode_conflict_error");
+			spin_unlock(&host_info_lock);
+			return (RCODE_CONFLICT_ERROR);	/* A resource conflict was detected.
+							   The request may be retried */
+		}
+		req->free_data = 1;
+		req->file_info = fi;
+		req->req.type = RAW1394_REQ_ARM;
+		req->req.generation = get_hpsb_generation(host);
+		req->req.misc =
+		    (((length << 16) & (0xFFFF0000)) | (ARM_WRITE & 0xFF));
+		req->req.tag = arm_addr->arm_tag;
+		req->req.recvb = arm_addr->recvb;
+		req->req.length = size;
+		arm_req_resp = (struct arm_request_response *)(req->data);
+		arm_req = (struct arm_request *)((byte_t *) (req->data) +
+						 (sizeof
+						  (struct
+						   arm_request_response)));
+		arm_resp =
+		    (struct arm_response *)((byte_t *) (arm_req) +
+					    (sizeof(struct arm_r