Linux-2.6.12-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!
diff --git a/drivers/ieee1394/raw1394.c b/drivers/ieee1394/raw1394.c
new file mode 100644
index 0000000..6a08a89
--- /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_request)));
+ arm_resp->buffer = NULL;
+ memcpy((byte_t *) arm_resp + sizeof(struct arm_response),
+ data, length);
+ arm_req->buffer = int2ptr((arm_addr->recvb) +
+ sizeof(struct arm_request_response) +
+ sizeof(struct arm_request) +
+ sizeof(struct arm_response));
+ arm_req->buffer_length = length;
+ 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 = destid;
+ arm_req->tlabel = (flags >> 10) & 0x3f;
+ arm_req->tcode = (flags >> 4) & 0x0f;
+ arm_resp->buffer_length = 0;
+ arm_resp->response_code = rcode;
+ 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_lock(struct hpsb_host *host, int nodeid, quadlet_t * store,
+ u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode,
+ 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;
+ quadlet_t old, new;
+ struct arm_request_response *arm_req_resp = NULL;
+
+ if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) ||
+ ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) {
+ DBGMSG("arm_lock called by node: %X "
+ "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X",
+ nodeid, (u16) ((addr >> 32) & 0xFFFF),
+ (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF,
+ be32_to_cpu(data));
+ } else {
+ DBGMSG("arm_lock called by node: %X "
+ "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X arg: %8.8X",
+ nodeid, (u16) ((addr >> 32) & 0xFFFF),
+ (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF,
+ be32_to_cpu(data), be32_to_cpu(arg));
+ }
+ 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 + sizeof(*store)))) {
+ found = 1;
+ break;
+ }
+ entry = entry->next;
+ }
+ if (found) {
+ break;
+ }
+ }
+ }
+ rcode = -1;
+ if (!found) {
+ printk(KERN_ERR "raw1394: arm_lock FAILED addr_entry not found"
+ " -> rcode_address_error\n");
+ spin_unlock(&host_info_lock);
+ return (RCODE_ADDRESS_ERROR);
+ } else {
+ DBGMSG("arm_lock addr_entry FOUND");
+ }
+ if (rcode == -1) {
+ if (arm_addr->access_rights & ARM_LOCK) {
+ if (!(arm_addr->client_transactions & ARM_LOCK)) {
+ memcpy(&old,
+ (arm_addr->addr_space_buffer) + (addr -
+ (arm_addr->
+ start)),
+ sizeof(old));
+ switch (ext_tcode) {
+ case (EXTCODE_MASK_SWAP):
+ new = data | (old & ~arg);
+ break;
+ case (EXTCODE_COMPARE_SWAP):
+ if (old == arg) {
+ new = data;
+ } else {
+ new = old;
+ }
+ break;
+ case (EXTCODE_FETCH_ADD):
+ new =
+ cpu_to_be32(be32_to_cpu(data) +
+ be32_to_cpu(old));
+ break;
+ case (EXTCODE_LITTLE_ADD):
+ new =
+ cpu_to_le32(le32_to_cpu(data) +
+ le32_to_cpu(old));
+ break;
+ case (EXTCODE_BOUNDED_ADD):
+ if (old != arg) {
+ new =
+ cpu_to_be32(be32_to_cpu
+ (data) +
+ be32_to_cpu
+ (old));
+ } else {
+ new = old;
+ }
+ break;
+ case (EXTCODE_WRAP_ADD):
+ if (old != arg) {
+ new =
+ cpu_to_be32(be32_to_cpu
+ (data) +
+ be32_to_cpu
+ (old));
+ } else {
+ new = data;
+ }
+ break;
+ default:
+ rcode = RCODE_TYPE_ERROR; /* function not allowed */
+ printk(KERN_ERR
+ "raw1394: arm_lock FAILED "
+ "ext_tcode not allowed -> rcode_type_error\n");
+ break;
+ } /*switch */
+ if (rcode == -1) {
+ DBGMSG("arm_lock -> (rcode_complete)");
+ rcode = RCODE_COMPLETE;
+ memcpy(store, &old, sizeof(*store));
+ memcpy((arm_addr->addr_space_buffer) +
+ (addr - (arm_addr->start)),
+ &new, sizeof(*store));
+ }
+ }
+ } else {
+ rcode = RCODE_TYPE_ERROR; /* function not allowed */
+ DBGMSG("arm_lock -> rcode_type_error (access denied)");
+ }
+ }
+ if (arm_addr->notification_options & ARM_LOCK) {
+ byte_t *buf1, *buf2;
+ DBGMSG("arm_lock -> entering notification-section");
+ req = __alloc_pending_request(SLAB_ATOMIC);
+ if (!req) {
+ DBGMSG("arm_lock -> rcode_conflict_error");
+ spin_unlock(&host_info_lock);
+ return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
+ The request may be retried */
+ }
+ size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */
+ req->data = kmalloc(size, SLAB_ATOMIC);
+ if (!(req->data)) {
+ free_pending_request(req);
+ DBGMSG("arm_lock -> 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;
+ 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)));
+ buf1 = (byte_t *) arm_resp + sizeof(struct arm_response);
+ buf2 = buf1 + 2 * sizeof(*store);
+ if ((ext_tcode == EXTCODE_FETCH_ADD) ||
+ (ext_tcode == EXTCODE_LITTLE_ADD)) {
+ arm_req->buffer_length = sizeof(*store);
+ memcpy(buf1, &data, sizeof(*store));
+
+ } else {
+ arm_req->buffer_length = 2 * sizeof(*store);
+ memcpy(buf1, &arg, sizeof(*store));
+ memcpy(buf1 + sizeof(*store), &data, sizeof(*store));
+ }
+ if (rcode == RCODE_COMPLETE) {
+ arm_resp->buffer_length = sizeof(*store);
+ memcpy(buf2, &old, sizeof(*store));
+ } else {
+ arm_resp->buffer_length = 0;
+ }
+ req->file_info = fi;
+ req->req.type = RAW1394_REQ_ARM;
+ req->req.generation = get_hpsb_generation(host);
+ req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) |
+ (ARM_LOCK & 0xFF));
+ req->req.tag = arm_addr->arm_tag;
+ req->req.recvb = arm_addr->recvb;
+ req->req.length = size;
+ arm_req->generation = req->req.generation;
+ arm_req->extended_transaction_code = ext_tcode;
+ 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_resp->response_code = rcode;
+ 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));
+ arm_req->buffer =
+ int2ptr((arm_addr->recvb) +
+ sizeof(struct arm_request_response) +
+ sizeof(struct arm_request) +
+ sizeof(struct arm_response));
+ arm_resp->buffer =
+ int2ptr((arm_addr->recvb) +
+ sizeof(struct arm_request_response) +
+ sizeof(struct arm_request) +
+ sizeof(struct arm_response) + 2 * sizeof(*store));
+ queue_complete_req(req);
+ }
+ spin_unlock(&host_info_lock);
+ return (rcode);
+}
+
+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)
+{
+ 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;
+ octlet_t old, new;
+ struct arm_request_response *arm_req_resp = NULL;
+
+ if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) ||
+ ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) {
+ DBGMSG("arm_lock64 called by node: %X "
+ "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X ",
+ nodeid, (u16) ((addr >> 32) & 0xFFFF),
+ (u32) (addr & 0xFFFFFFFF),
+ ext_tcode & 0xFF,
+ (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF),
+ (u32) (be64_to_cpu(data) & 0xFFFFFFFF));
+ } else {
+ DBGMSG("arm_lock64 called by node: %X "
+ "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X arg: "
+ "%8.8X %8.8X ",
+ nodeid, (u16) ((addr >> 32) & 0xFFFF),
+ (u32) (addr & 0xFFFFFFFF),
+ ext_tcode & 0xFF,
+ (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF),
+ (u32) (be64_to_cpu(data) & 0xFFFFFFFF),
+ (u32) ((be64_to_cpu(arg) >> 32) & 0xFFFFFFFF),
+ (u32) (be64_to_cpu(arg) & 0xFFFFFFFF));
+ }
+ spin_lock(&host_info_lock);
+ hi = find_host_info(host); /* search addressentry in file_info's for host */
+ 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 + sizeof(*store)))) {
+ found = 1;
+ break;
+ }
+ entry = entry->next;
+ }
+ if (found) {
+ break;
+ }
+ }
+ }
+ rcode = -1;
+ if (!found) {
+ printk(KERN_ERR
+ "raw1394: arm_lock64 FAILED addr_entry not found"
+ " -> rcode_address_error\n");
+ spin_unlock(&host_info_lock);
+ return (RCODE_ADDRESS_ERROR);
+ } else {
+ DBGMSG("arm_lock64 addr_entry FOUND");
+ }
+ if (rcode == -1) {
+ if (arm_addr->access_rights & ARM_LOCK) {
+ if (!(arm_addr->client_transactions & ARM_LOCK)) {
+ memcpy(&old,
+ (arm_addr->addr_space_buffer) + (addr -
+ (arm_addr->
+ start)),
+ sizeof(old));
+ switch (ext_tcode) {
+ case (EXTCODE_MASK_SWAP):
+ new = data | (old & ~arg);
+ break;
+ case (EXTCODE_COMPARE_SWAP):
+ if (old == arg) {
+ new = data;
+ } else {
+ new = old;
+ }
+ break;
+ case (EXTCODE_FETCH_ADD):
+ new =
+ cpu_to_be64(be64_to_cpu(data) +
+ be64_to_cpu(old));
+ break;
+ case (EXTCODE_LITTLE_ADD):
+ new =
+ cpu_to_le64(le64_to_cpu(data) +
+ le64_to_cpu(old));
+ break;
+ case (EXTCODE_BOUNDED_ADD):
+ if (old != arg) {
+ new =
+ cpu_to_be64(be64_to_cpu
+ (data) +
+ be64_to_cpu
+ (old));
+ } else {
+ new = old;
+ }
+ break;
+ case (EXTCODE_WRAP_ADD):
+ if (old != arg) {
+ new =
+ cpu_to_be64(be64_to_cpu
+ (data) +
+ be64_to_cpu
+ (old));
+ } else {
+ new = data;
+ }
+ break;
+ default:
+ printk(KERN_ERR
+ "raw1394: arm_lock64 FAILED "
+ "ext_tcode not allowed -> rcode_type_error\n");
+ rcode = RCODE_TYPE_ERROR; /* function not allowed */
+ break;
+ } /*switch */
+ if (rcode == -1) {
+ DBGMSG
+ ("arm_lock64 -> (rcode_complete)");
+ rcode = RCODE_COMPLETE;
+ memcpy(store, &old, sizeof(*store));
+ memcpy((arm_addr->addr_space_buffer) +
+ (addr - (arm_addr->start)),
+ &new, sizeof(*store));
+ }
+ }
+ } else {
+ rcode = RCODE_TYPE_ERROR; /* function not allowed */
+ DBGMSG
+ ("arm_lock64 -> rcode_type_error (access denied)");
+ }
+ }
+ if (arm_addr->notification_options & ARM_LOCK) {
+ byte_t *buf1, *buf2;
+ DBGMSG("arm_lock64 -> entering notification-section");
+ req = __alloc_pending_request(SLAB_ATOMIC);
+ if (!req) {
+ spin_unlock(&host_info_lock);
+ DBGMSG("arm_lock64 -> rcode_conflict_error");
+ return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
+ The request may be retried */
+ }
+ size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */
+ req->data = kmalloc(size, SLAB_ATOMIC);
+ if (!(req->data)) {
+ free_pending_request(req);
+ spin_unlock(&host_info_lock);
+ DBGMSG("arm_lock64 -> rcode_conflict_error");
+ return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
+ The request may be retried */
+ }
+ req->free_data = 1;
+ 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)));
+ buf1 = (byte_t *) arm_resp + sizeof(struct arm_response);
+ buf2 = buf1 + 2 * sizeof(*store);
+ if ((ext_tcode == EXTCODE_FETCH_ADD) ||
+ (ext_tcode == EXTCODE_LITTLE_ADD)) {
+ arm_req->buffer_length = sizeof(*store);
+ memcpy(buf1, &data, sizeof(*store));
+
+ } else {
+ arm_req->buffer_length = 2 * sizeof(*store);
+ memcpy(buf1, &arg, sizeof(*store));
+ memcpy(buf1 + sizeof(*store), &data, sizeof(*store));
+ }
+ if (rcode == RCODE_COMPLETE) {
+ arm_resp->buffer_length = sizeof(*store);
+ memcpy(buf2, &old, sizeof(*store));
+ } else {
+ arm_resp->buffer_length = 0;
+ }
+ req->file_info = fi;
+ req->req.type = RAW1394_REQ_ARM;
+ req->req.generation = get_hpsb_generation(host);
+ req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) |
+ (ARM_LOCK & 0xFF));
+ req->req.tag = arm_addr->arm_tag;
+ req->req.recvb = arm_addr->recvb;
+ req->req.length = size;
+ arm_req->generation = req->req.generation;
+ arm_req->extended_transaction_code = ext_tcode;
+ 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_resp->response_code = rcode;
+ 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));
+ arm_req->buffer =
+ int2ptr((arm_addr->recvb) +
+ sizeof(struct arm_request_response) +
+ sizeof(struct arm_request) +
+ sizeof(struct arm_response));
+ arm_resp->buffer =
+ int2ptr((arm_addr->recvb) +
+ sizeof(struct arm_request_response) +
+ sizeof(struct arm_request) +
+ sizeof(struct arm_response) + 2 * sizeof(*store));
+ queue_complete_req(req);
+ }
+ spin_unlock(&host_info_lock);
+ return (rcode);
+}
+
+static int arm_register(struct file_info *fi, struct pending_request *req)
+{
+ int retval;
+ struct arm_addr *addr;
+ struct host_info *hi;
+ struct file_info *fi_hlp = NULL;
+ struct list_head *entry;
+ struct arm_addr *arm_addr = NULL;
+ int same_host, another_host;
+ unsigned long flags;
+
+ DBGMSG("arm_register called "
+ "addr(Offset): %8.8x %8.8x length: %u "
+ "rights: %2.2X notify: %2.2X "
+ "max_blk_len: %4.4X",
+ (u32) ((req->req.address >> 32) & 0xFFFF),
+ (u32) (req->req.address & 0xFFFFFFFF),
+ req->req.length, ((req->req.misc >> 8) & 0xFF),
+ (req->req.misc & 0xFF), ((req->req.misc >> 16) & 0xFFFF));
+ /* check addressrange */
+ if ((((req->req.address) & ~(0xFFFFFFFFFFFFULL)) != 0) ||
+ (((req->req.address + req->req.length) & ~(0xFFFFFFFFFFFFULL)) !=
+ 0)) {
+ req->req.length = 0;
+ return (-EINVAL);
+ }
+ /* addr-list-entry for fileinfo */
+ addr = (struct arm_addr *)kmalloc(sizeof(struct arm_addr), SLAB_KERNEL);
+ if (!addr) {
+ req->req.length = 0;
+ return (-ENOMEM);
+ }
+ /* allocation of addr_space_buffer */
+ addr->addr_space_buffer = (u8 *) vmalloc(req->req.length);
+ if (!(addr->addr_space_buffer)) {
+ kfree(addr);
+ req->req.length = 0;
+ return (-ENOMEM);
+ }
+ /* initialization of addr_space_buffer */
+ if ((req->req.sendb) == (unsigned long)NULL) {
+ /* init: set 0 */
+ memset(addr->addr_space_buffer, 0, req->req.length);
+ } else {
+ /* init: user -> kernel */
+ if (copy_from_user
+ (addr->addr_space_buffer, int2ptr(req->req.sendb),
+ req->req.length)) {
+ vfree(addr->addr_space_buffer);
+ kfree(addr);
+ return (-EFAULT);
+ }
+ }
+ INIT_LIST_HEAD(&addr->addr_list);
+ addr->arm_tag = req->req.tag;
+ addr->start = req->req.address;
+ addr->end = req->req.address + req->req.length;
+ addr->access_rights = (u8) (req->req.misc & 0x0F);
+ addr->notification_options = (u8) ((req->req.misc >> 4) & 0x0F);
+ addr->client_transactions = (u8) ((req->req.misc >> 8) & 0x0F);
+ addr->access_rights |= addr->client_transactions;
+ addr->notification_options |= addr->client_transactions;
+ addr->recvb = req->req.recvb;
+ addr->rec_length = (u16) ((req->req.misc >> 16) & 0xFFFF);
+ spin_lock_irqsave(&host_info_lock, flags);
+ hi = find_host_info(fi->host);
+ same_host = 0;
+ another_host = 0;
+ /* same host with address-entry containing same addressrange ? */
+ list_for_each_entry(fi_hlp, &hi->file_info_list, list) {
+ entry = fi_hlp->addr_list.next;
+ while (entry != &(fi_hlp->addr_list)) {
+ arm_addr =
+ list_entry(entry, struct arm_addr, addr_list);
+ if ((arm_addr->start == addr->start)
+ && (arm_addr->end == addr->end)) {
+ DBGMSG("same host ownes same "
+ "addressrange -> EALREADY");
+ same_host = 1;
+ break;
+ }
+ entry = entry->next;
+ }
+ if (same_host) {
+ break;
+ }
+ }
+ if (same_host) {
+ /* addressrange occupied by same host */
+ vfree(addr->addr_space_buffer);
+ kfree(addr);
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ return (-EALREADY);
+ }
+ /* another host with valid address-entry containing same addressrange */
+ list_for_each_entry(hi, &host_info_list, list) {
+ if (hi->host != fi->host) {
+ list_for_each_entry(fi_hlp, &hi->file_info_list, list) {
+ entry = fi_hlp->addr_list.next;
+ while (entry != &(fi_hlp->addr_list)) {
+ arm_addr =
+ list_entry(entry, struct arm_addr,
+ addr_list);
+ if ((arm_addr->start == addr->start)
+ && (arm_addr->end == addr->end)) {
+ DBGMSG
+ ("another host ownes same "
+ "addressrange");
+ another_host = 1;
+ break;
+ }
+ entry = entry->next;
+ }
+ if (another_host) {
+ break;
+ }
+ }
+ }
+ }
+ if (another_host) {
+ DBGMSG("another hosts entry is valid -> SUCCESS");
+ if (copy_to_user(int2ptr(req->req.recvb),
+ &addr->start, sizeof(u64))) {
+ printk(KERN_ERR "raw1394: arm_register failed "
+ " address-range-entry is invalid -> EFAULT !!!\n");
+ vfree(addr->addr_space_buffer);
+ kfree(addr);
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ return (-EFAULT);
+ }
+ free_pending_request(req); /* immediate success or fail */
+ /* INSERT ENTRY */
+ list_add_tail(&addr->addr_list, &fi->addr_list);
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ return sizeof(struct raw1394_request);
+ }
+ retval =
+ hpsb_register_addrspace(&raw1394_highlevel, fi->host, &arm_ops,
+ req->req.address,
+ req->req.address + req->req.length);
+ if (retval) {
+ /* INSERT ENTRY */
+ list_add_tail(&addr->addr_list, &fi->addr_list);
+ } else {
+ DBGMSG("arm_register failed errno: %d \n", retval);
+ vfree(addr->addr_space_buffer);
+ kfree(addr);
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ return (-EALREADY);
+ }
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ free_pending_request(req); /* immediate success or fail */
+ return sizeof(struct raw1394_request);
+}
+
+static int arm_unregister(struct file_info *fi, struct pending_request *req)
+{
+ int found = 0;
+ int retval = 0;
+ struct list_head *entry;
+ struct arm_addr *addr = NULL;
+ struct host_info *hi;
+ struct file_info *fi_hlp = NULL;
+ struct arm_addr *arm_addr = NULL;
+ int another_host;
+ unsigned long flags;
+
+ DBGMSG("arm_Unregister called addr(Offset): "
+ "%8.8x %8.8x",
+ (u32) ((req->req.address >> 32) & 0xFFFF),
+ (u32) (req->req.address & 0xFFFFFFFF));
+ spin_lock_irqsave(&host_info_lock, flags);
+ /* get addr */
+ entry = fi->addr_list.next;
+ while (entry != &(fi->addr_list)) {
+ addr = list_entry(entry, struct arm_addr, addr_list);
+ if (addr->start == req->req.address) {
+ found = 1;
+ break;
+ }
+ entry = entry->next;
+ }
+ if (!found) {
+ DBGMSG("arm_Unregister addr not found");
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ return (-EINVAL);
+ }
+ DBGMSG("arm_Unregister addr found");
+ another_host = 0;
+ /* another host with valid address-entry containing
+ same addressrange */
+ list_for_each_entry(hi, &host_info_list, list) {
+ if (hi->host != fi->host) {
+ list_for_each_entry(fi_hlp, &hi->file_info_list, list) {
+ entry = fi_hlp->addr_list.next;
+ while (entry != &(fi_hlp->addr_list)) {
+ arm_addr = list_entry(entry,
+ struct arm_addr,
+ addr_list);
+ if (arm_addr->start == addr->start) {
+ DBGMSG("another host ownes "
+ "same addressrange");
+ another_host = 1;
+ break;
+ }
+ entry = entry->next;
+ }
+ if (another_host) {
+ break;
+ }
+ }
+ }
+ }
+ if (another_host) {
+ DBGMSG("delete entry from list -> success");
+ list_del(&addr->addr_list);
+ vfree(addr->addr_space_buffer);
+ kfree(addr);
+ free_pending_request(req); /* immediate success or fail */
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ return sizeof(struct raw1394_request);
+ }
+ retval =
+ hpsb_unregister_addrspace(&raw1394_highlevel, fi->host,
+ addr->start);
+ if (!retval) {
+ printk(KERN_ERR "raw1394: arm_Unregister failed -> EINVAL\n");
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ return (-EINVAL);
+ }
+ DBGMSG("delete entry from list -> success");
+ list_del(&addr->addr_list);
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ vfree(addr->addr_space_buffer);
+ kfree(addr);
+ free_pending_request(req); /* immediate success or fail */
+ return sizeof(struct raw1394_request);
+}
+
+/* Copy data from ARM buffer(s) to user buffer. */
+static int arm_get_buf(struct file_info *fi, struct pending_request *req)
+{
+ struct arm_addr *arm_addr = NULL;
+ unsigned long flags;
+ unsigned long offset;
+
+ struct list_head *entry;
+
+ DBGMSG("arm_get_buf "
+ "addr(Offset): %04X %08X length: %u",
+ (u32) ((req->req.address >> 32) & 0xFFFF),
+ (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length);
+
+ spin_lock_irqsave(&host_info_lock, flags);
+ entry = fi->addr_list.next;
+ while (entry != &(fi->addr_list)) {
+ arm_addr = list_entry(entry, struct arm_addr, addr_list);
+ if ((arm_addr->start <= req->req.address) &&
+ (arm_addr->end > req->req.address)) {
+ if (req->req.address + req->req.length <= arm_addr->end) {
+ offset = req->req.address - arm_addr->start;
+
+ DBGMSG
+ ("arm_get_buf copy_to_user( %08X, %p, %u )",
+ (u32) req->req.recvb,
+ arm_addr->addr_space_buffer + offset,
+ (u32) req->req.length);
+
+ if (copy_to_user
+ (int2ptr(req->req.recvb),
+ arm_addr->addr_space_buffer + offset,
+ req->req.length)) {
+ spin_unlock_irqrestore(&host_info_lock,
+ flags);
+ return (-EFAULT);
+ }
+
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ /* We have to free the request, because we
+ * queue no response, and therefore nobody
+ * will free it. */
+ free_pending_request(req);
+ return sizeof(struct raw1394_request);
+ } else {
+ DBGMSG("arm_get_buf request exceeded mapping");
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ return (-EINVAL);
+ }
+ }
+ entry = entry->next;
+ }
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ return (-EINVAL);
+}
+
+/* Copy data from user buffer to ARM buffer(s). */
+static int arm_set_buf(struct file_info *fi, struct pending_request *req)
+{
+ struct arm_addr *arm_addr = NULL;
+ unsigned long flags;
+ unsigned long offset;
+
+ struct list_head *entry;
+
+ DBGMSG("arm_set_buf "
+ "addr(Offset): %04X %08X length: %u",
+ (u32) ((req->req.address >> 32) & 0xFFFF),
+ (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length);
+
+ spin_lock_irqsave(&host_info_lock, flags);
+ entry = fi->addr_list.next;
+ while (entry != &(fi->addr_list)) {
+ arm_addr = list_entry(entry, struct arm_addr, addr_list);
+ if ((arm_addr->start <= req->req.address) &&
+ (arm_addr->end > req->req.address)) {
+ if (req->req.address + req->req.length <= arm_addr->end) {
+ offset = req->req.address - arm_addr->start;
+
+ DBGMSG
+ ("arm_set_buf copy_from_user( %p, %08X, %u )",
+ arm_addr->addr_space_buffer + offset,
+ (u32) req->req.sendb,
+ (u32) req->req.length);
+
+ if (copy_from_user
+ (arm_addr->addr_space_buffer + offset,
+ int2ptr(req->req.sendb),
+ req->req.length)) {
+ spin_unlock_irqrestore(&host_info_lock,
+ flags);
+ return (-EFAULT);
+ }
+
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */
+ return sizeof(struct raw1394_request);
+ } else {
+ DBGMSG("arm_set_buf request exceeded mapping");
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ return (-EINVAL);
+ }
+ }
+ entry = entry->next;
+ }
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ return (-EINVAL);
+}
+
+static int reset_notification(struct file_info *fi, struct pending_request *req)
+{
+ DBGMSG("reset_notification called - switch %s ",
+ (req->req.misc == RAW1394_NOTIFY_OFF) ? "OFF" : "ON");
+ if ((req->req.misc == RAW1394_NOTIFY_OFF) ||
+ (req->req.misc == RAW1394_NOTIFY_ON)) {
+ fi->notification = (u8) req->req.misc;
+ free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */
+ return sizeof(struct raw1394_request);
+ }
+ /* error EINVAL (22) invalid argument */
+ return (-EINVAL);
+}
+
+static int write_phypacket(struct file_info *fi, struct pending_request *req)
+{
+ struct hpsb_packet *packet = NULL;
+ int retval = 0;
+ quadlet_t data;
+
+ data = be32_to_cpu((u32) req->req.sendb);
+ DBGMSG("write_phypacket called - quadlet 0x%8.8x ", data);
+ packet = hpsb_make_phypacket(fi->host, data);
+ if (!packet)
+ return -ENOMEM;
+ req->req.length = 0;
+ req->packet = packet;
+ 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;
+ retval = hpsb_send_packet(packet);
+ DBGMSG("write_phypacket send_packet called => retval: %d ", retval);
+ if (retval < 0) {
+ req->req.error = RAW1394_ERROR_SEND_ERROR;
+ req->req.length = 0;
+ queue_complete_req(req);
+ }
+ return sizeof(struct raw1394_request);
+}
+
+static int get_config_rom(struct file_info *fi, struct pending_request *req)
+{
+ int ret = sizeof(struct raw1394_request);
+ quadlet_t *data = kmalloc(req->req.length, SLAB_KERNEL);
+ int status;
+
+ if (!data)
+ return -ENOMEM;
+
+ status =
+ csr1212_read(fi->host->csr.rom, CSR1212_CONFIG_ROM_SPACE_OFFSET,
+ data, req->req.length);
+ if (copy_to_user(int2ptr(req->req.recvb), data, req->req.length))
+ ret = -EFAULT;
+ if (copy_to_user
+ (int2ptr(req->req.tag), &fi->host->csr.rom->cache_head->len,
+ sizeof(fi->host->csr.rom->cache_head->len)))
+ ret = -EFAULT;
+ if (copy_to_user(int2ptr(req->req.address), &fi->host->csr.generation,
+ sizeof(fi->host->csr.generation)))
+ ret = -EFAULT;
+ if (copy_to_user(int2ptr(req->req.sendb), &status, sizeof(status)))
+ ret = -EFAULT;
+ kfree(data);
+ if (ret >= 0) {
+ free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */
+ }
+ return ret;
+}
+
+static int update_config_rom(struct file_info *fi, struct pending_request *req)
+{
+ int ret = sizeof(struct raw1394_request);
+ quadlet_t *data = kmalloc(req->req.length, SLAB_KERNEL);
+ if (!data)
+ return -ENOMEM;
+ if (copy_from_user(data, int2ptr(req->req.sendb), req->req.length)) {
+ ret = -EFAULT;
+ } else {
+ int status = hpsb_update_config_rom(fi->host,
+ data, req->req.length,
+ (unsigned char)req->req.
+ misc);
+ if (copy_to_user
+ (int2ptr(req->req.recvb), &status, sizeof(status)))
+ ret = -ENOMEM;
+ }
+ kfree(data);
+ if (ret >= 0) {
+ free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */
+ fi->cfgrom_upd = 1;
+ }
+ return ret;
+}
+
+static int modify_config_rom(struct file_info *fi, struct pending_request *req)
+{
+ struct csr1212_keyval *kv;
+ struct csr1212_csr_rom_cache *cache;
+ struct csr1212_dentry *dentry;
+ u32 dr;
+ int ret = 0;
+
+ if (req->req.misc == ~0) {
+ if (req->req.length == 0)
+ return -EINVAL;
+
+ /* Find an unused slot */
+ for (dr = 0;
+ dr < RAW1394_MAX_USER_CSR_DIRS && fi->csr1212_dirs[dr];
+ dr++) ;
+
+ if (dr == RAW1394_MAX_USER_CSR_DIRS)
+ return -ENOMEM;
+
+ fi->csr1212_dirs[dr] =
+ csr1212_new_directory(CSR1212_KV_ID_VENDOR);
+ if (!fi->csr1212_dirs[dr])
+ return -ENOMEM;
+ } else {
+ dr = req->req.misc;
+ if (!fi->csr1212_dirs[dr])
+ return -EINVAL;
+
+ /* Delete old stuff */
+ for (dentry =
+ fi->csr1212_dirs[dr]->value.directory.dentries_head;
+ dentry; dentry = dentry->next) {
+ csr1212_detach_keyval_from_directory(fi->host->csr.rom->
+ root_kv,
+ dentry->kv);
+ }
+
+ if (req->req.length == 0) {
+ csr1212_release_keyval(fi->csr1212_dirs[dr]);
+ fi->csr1212_dirs[dr] = NULL;
+
+ hpsb_update_config_rom_image(fi->host);
+ free_pending_request(req);
+ return sizeof(struct raw1394_request);
+ }
+ }
+
+ cache = csr1212_rom_cache_malloc(0, req->req.length);
+ if (!cache) {
+ csr1212_release_keyval(fi->csr1212_dirs[dr]);
+ fi->csr1212_dirs[dr] = NULL;
+ return -ENOMEM;
+ }
+
+ cache->filled_head =
+ kmalloc(sizeof(struct csr1212_cache_region), GFP_KERNEL);
+ if (!cache->filled_head) {
+ csr1212_release_keyval(fi->csr1212_dirs[dr]);
+ fi->csr1212_dirs[dr] = NULL;
+ CSR1212_FREE(cache);
+ return -ENOMEM;
+ }
+ cache->filled_tail = cache->filled_head;
+
+ if (copy_from_user(cache->data, int2ptr(req->req.sendb),
+ req->req.length)) {
+ csr1212_release_keyval(fi->csr1212_dirs[dr]);
+ fi->csr1212_dirs[dr] = NULL;
+ CSR1212_FREE(cache);
+ ret = -EFAULT;
+ } else {
+ cache->len = req->req.length;
+ cache->filled_head->offset_start = 0;
+ cache->filled_head->offset_end = cache->size - 1;
+
+ cache->layout_head = cache->layout_tail = fi->csr1212_dirs[dr];
+
+ ret = CSR1212_SUCCESS;
+ /* parse all the items */
+ for (kv = cache->layout_head; ret == CSR1212_SUCCESS && kv;
+ kv = kv->next) {
+ ret = csr1212_parse_keyval(kv, cache);
+ }
+
+ /* attach top level items to the root directory */
+ for (dentry =
+ fi->csr1212_dirs[dr]->value.directory.dentries_head;
+ ret == CSR1212_SUCCESS && dentry; dentry = dentry->next) {
+ ret =
+ csr1212_attach_keyval_to_directory(fi->host->csr.
+ rom->root_kv,
+ dentry->kv);
+ }
+
+ if (ret == CSR1212_SUCCESS) {
+ ret = hpsb_update_config_rom_image(fi->host);
+
+ if (ret >= 0 && copy_to_user(int2ptr(req->req.recvb),
+ &dr, sizeof(dr))) {
+ ret = -ENOMEM;
+ }
+ }
+ }
+ kfree(cache->filled_head);
+ kfree(cache);
+
+ if (ret >= 0) {
+ /* we have to free the request, because we queue no response,
+ * and therefore nobody will free it */
+ free_pending_request(req);
+ return sizeof(struct raw1394_request);
+ } else {
+ for (dentry =
+ fi->csr1212_dirs[dr]->value.directory.dentries_head;
+ dentry; dentry = dentry->next) {
+ csr1212_detach_keyval_from_directory(fi->host->csr.rom->
+ root_kv,
+ dentry->kv);
+ }
+ csr1212_release_keyval(fi->csr1212_dirs[dr]);
+ fi->csr1212_dirs[dr] = NULL;
+ return ret;
+ }
+}
+
+static int state_connected(struct file_info *fi, struct pending_request *req)
+{
+ int node = req->req.address >> 48;
+
+ req->req.error = RAW1394_ERROR_NONE;
+
+ switch (req->req.type) {
+
+ case RAW1394_REQ_ECHO:
+ queue_complete_req(req);
+ return sizeof(struct raw1394_request);
+
+ case RAW1394_REQ_ISO_SEND:
+ return handle_iso_send(fi, req, node);
+
+ case RAW1394_REQ_ARM_REGISTER:
+ return arm_register(fi, req);
+
+ case RAW1394_REQ_ARM_UNREGISTER:
+ return arm_unregister(fi, req);
+
+ case RAW1394_REQ_ARM_SET_BUF:
+ return arm_set_buf(fi, req);
+
+ case RAW1394_REQ_ARM_GET_BUF:
+ return arm_get_buf(fi, req);
+
+ case RAW1394_REQ_RESET_NOTIFY:
+ return reset_notification(fi, req);
+
+ case RAW1394_REQ_ISO_LISTEN:
+ handle_iso_listen(fi, req);
+ return sizeof(struct raw1394_request);
+
+ case RAW1394_REQ_FCP_LISTEN:
+ handle_fcp_listen(fi, req);
+ return sizeof(struct raw1394_request);
+
+ case RAW1394_REQ_RESET_BUS:
+ if (req->req.misc == RAW1394_LONG_RESET) {
+ DBGMSG("busreset called (type: LONG)");
+ hpsb_reset_bus(fi->host, LONG_RESET);
+ free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */
+ return sizeof(struct raw1394_request);
+ }
+ if (req->req.misc == RAW1394_SHORT_RESET) {
+ DBGMSG("busreset called (type: SHORT)");
+ hpsb_reset_bus(fi->host, SHORT_RESET);
+ free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */
+ return sizeof(struct raw1394_request);
+ }
+ /* error EINVAL (22) invalid argument */
+ return (-EINVAL);
+ case RAW1394_REQ_GET_ROM:
+ return get_config_rom(fi, req);
+
+ case RAW1394_REQ_UPDATE_ROM:
+ return update_config_rom(fi, req);
+
+ case RAW1394_REQ_MODIFY_ROM:
+ return modify_config_rom(fi, req);
+ }
+
+ if (req->req.generation != get_hpsb_generation(fi->host)) {
+ req->req.error = RAW1394_ERROR_GENERATION;
+ req->req.generation = get_hpsb_generation(fi->host);
+ req->req.length = 0;
+ queue_complete_req(req);
+ return sizeof(struct raw1394_request);
+ }
+
+ switch (req->req.type) {
+ case RAW1394_REQ_PHYPACKET:
+ return write_phypacket(fi, req);
+ case RAW1394_REQ_ASYNC_SEND:
+ return handle_async_send(fi, req);
+ }
+
+ if (req->req.length == 0) {
+ req->req.error = RAW1394_ERROR_INVALID_ARG;
+ queue_complete_req(req);
+ return sizeof(struct raw1394_request);
+ }
+
+ return handle_async_request(fi, req, node);
+}
+
+static ssize_t raw1394_write(struct file *file, const char __user * buffer,
+ size_t count, loff_t * offset_is_ignored)
+{
+ struct file_info *fi = (struct file_info *)file->private_data;
+ struct pending_request *req;
+ ssize_t retval = 0;
+
+ if (count != sizeof(struct raw1394_request)) {
+ return -EINVAL;
+ }
+
+ req = alloc_pending_request();
+ if (req == NULL) {
+ return -ENOMEM;
+ }
+ req->file_info = fi;
+
+ if (copy_from_user(&req->req, buffer, sizeof(struct raw1394_request))) {
+ free_pending_request(req);
+ return -EFAULT;
+ }
+
+ switch (fi->state) {
+ case opened:
+ retval = state_opened(fi, req);
+ break;
+
+ case initialized:
+ retval = state_initialized(fi, req);
+ break;
+
+ case connected:
+ retval = state_connected(fi, req);
+ break;
+ }
+
+ if (retval < 0) {
+ free_pending_request(req);
+ }
+
+ return retval;
+}
+
+/* rawiso operations */
+
+/* check if any RAW1394_REQ_RAWISO_ACTIVITY event is already in the
+ * completion queue (reqlists_lock must be taken) */
+static inline int __rawiso_event_in_queue(struct file_info *fi)
+{
+ struct pending_request *req;
+
+ list_for_each_entry(req, &fi->req_complete, list)
+ if (req->req.type == RAW1394_REQ_RAWISO_ACTIVITY)
+ return 1;
+
+ return 0;
+}
+
+/* put a RAWISO_ACTIVITY event in the queue, if one isn't there already */
+static void queue_rawiso_event(struct file_info *fi)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&fi->reqlists_lock, flags);
+
+ /* only one ISO activity event may be in the queue */
+ if (!__rawiso_event_in_queue(fi)) {
+ struct pending_request *req =
+ __alloc_pending_request(SLAB_ATOMIC);
+
+ if (req) {
+ req->file_info = fi;
+ req->req.type = RAW1394_REQ_RAWISO_ACTIVITY;
+ req->req.generation = get_hpsb_generation(fi->host);
+ __queue_complete_req(req);
+ } else {
+ /* on allocation failure, signal an overflow */
+ if (fi->iso_handle) {
+ atomic_inc(&fi->iso_handle->overflows);
+ }
+ }
+ }
+ spin_unlock_irqrestore(&fi->reqlists_lock, flags);
+}
+
+static void rawiso_activity_cb(struct hpsb_iso *iso)
+{
+ unsigned long flags;
+ struct host_info *hi;
+ struct file_info *fi;
+
+ spin_lock_irqsave(&host_info_lock, flags);
+ hi = find_host_info(iso->host);
+
+ if (hi != NULL) {
+ list_for_each_entry(fi, &hi->file_info_list, list) {
+ if (fi->iso_handle == iso)
+ queue_rawiso_event(fi);
+ }
+ }
+
+ spin_unlock_irqrestore(&host_info_lock, flags);
+}
+
+/* helper function - gather all the kernel iso status bits for returning to user-space */
+static void raw1394_iso_fill_status(struct hpsb_iso *iso,
+ struct raw1394_iso_status *stat)
+{
+ stat->config.data_buf_size = iso->buf_size;
+ stat->config.buf_packets = iso->buf_packets;
+ stat->config.channel = iso->channel;
+ stat->config.speed = iso->speed;
+ stat->config.irq_interval = iso->irq_interval;
+ stat->n_packets = hpsb_iso_n_ready(iso);
+ stat->overflows = atomic_read(&iso->overflows);
+ stat->xmit_cycle = iso->xmit_cycle;
+}
+
+static int raw1394_iso_xmit_init(struct file_info *fi, void __user * uaddr)
+{
+ struct raw1394_iso_status stat;
+
+ if (!fi->host)
+ return -EINVAL;
+
+ if (copy_from_user(&stat, uaddr, sizeof(stat)))
+ return -EFAULT;
+
+ fi->iso_handle = hpsb_iso_xmit_init(fi->host,
+ stat.config.data_buf_size,
+ stat.config.buf_packets,
+ stat.config.channel,
+ stat.config.speed,
+ stat.config.irq_interval,
+ rawiso_activity_cb);
+ if (!fi->iso_handle)
+ return -ENOMEM;
+
+ fi->iso_state = RAW1394_ISO_XMIT;
+
+ raw1394_iso_fill_status(fi->iso_handle, &stat);
+ if (copy_to_user(uaddr, &stat, sizeof(stat)))
+ return -EFAULT;
+
+ /* queue an event to get things started */
+ rawiso_activity_cb(fi->iso_handle);
+
+ return 0;
+}
+
+static int raw1394_iso_recv_init(struct file_info *fi, void __user * uaddr)
+{
+ struct raw1394_iso_status stat;
+
+ if (!fi->host)
+ return -EINVAL;
+
+ if (copy_from_user(&stat, uaddr, sizeof(stat)))
+ return -EFAULT;
+
+ fi->iso_handle = hpsb_iso_recv_init(fi->host,
+ stat.config.data_buf_size,
+ stat.config.buf_packets,
+ stat.config.channel,
+ stat.config.dma_mode,
+ stat.config.irq_interval,
+ rawiso_activity_cb);
+ if (!fi->iso_handle)
+ return -ENOMEM;
+
+ fi->iso_state = RAW1394_ISO_RECV;
+
+ raw1394_iso_fill_status(fi->iso_handle, &stat);
+ if (copy_to_user(uaddr, &stat, sizeof(stat)))
+ return -EFAULT;
+ return 0;
+}
+
+static int raw1394_iso_get_status(struct file_info *fi, void __user * uaddr)
+{
+ struct raw1394_iso_status stat;
+ struct hpsb_iso *iso = fi->iso_handle;
+
+ raw1394_iso_fill_status(fi->iso_handle, &stat);
+ if (copy_to_user(uaddr, &stat, sizeof(stat)))
+ return -EFAULT;
+
+ /* reset overflow counter */
+ atomic_set(&iso->overflows, 0);
+
+ return 0;
+}
+
+/* copy N packet_infos out of the ringbuffer into user-supplied array */
+static int raw1394_iso_recv_packets(struct file_info *fi, void __user * uaddr)
+{
+ struct raw1394_iso_packets upackets;
+ unsigned int packet = fi->iso_handle->first_packet;
+ int i;
+
+ if (copy_from_user(&upackets, uaddr, sizeof(upackets)))
+ return -EFAULT;
+
+ if (upackets.n_packets > hpsb_iso_n_ready(fi->iso_handle))
+ return -EINVAL;
+
+ /* ensure user-supplied buffer is accessible and big enough */
+ if (!access_ok(VERIFY_WRITE, upackets.infos,
+ upackets.n_packets *
+ sizeof(struct raw1394_iso_packet_info)))
+ return -EFAULT;
+
+ /* copy the packet_infos out */
+ for (i = 0; i < upackets.n_packets; i++) {
+ if (__copy_to_user(&upackets.infos[i],
+ &fi->iso_handle->infos[packet],
+ sizeof(struct raw1394_iso_packet_info)))
+ return -EFAULT;
+
+ packet = (packet + 1) % fi->iso_handle->buf_packets;
+ }
+
+ return 0;
+}
+
+/* copy N packet_infos from user to ringbuffer, and queue them for transmission */
+static int raw1394_iso_send_packets(struct file_info *fi, void __user * uaddr)
+{
+ struct raw1394_iso_packets upackets;
+ int i, rv;
+
+ if (copy_from_user(&upackets, uaddr, sizeof(upackets)))
+ return -EFAULT;
+
+ if (upackets.n_packets > hpsb_iso_n_ready(fi->iso_handle))
+ return -EINVAL;
+
+ /* ensure user-supplied buffer is accessible and big enough */
+ if (!access_ok(VERIFY_READ, upackets.infos,
+ upackets.n_packets *
+ sizeof(struct raw1394_iso_packet_info)))
+ return -EFAULT;
+
+ /* copy the infos structs in and queue the packets */
+ for (i = 0; i < upackets.n_packets; i++) {
+ struct raw1394_iso_packet_info info;
+
+ if (__copy_from_user(&info, &upackets.infos[i],
+ sizeof(struct raw1394_iso_packet_info)))
+ return -EFAULT;
+
+ rv = hpsb_iso_xmit_queue_packet(fi->iso_handle, info.offset,
+ info.len, info.tag, info.sy);
+ if (rv)
+ return rv;
+ }
+
+ return 0;
+}
+
+static void raw1394_iso_shutdown(struct file_info *fi)
+{
+ if (fi->iso_handle)
+ hpsb_iso_shutdown(fi->iso_handle);
+
+ fi->iso_handle = NULL;
+ fi->iso_state = RAW1394_ISO_INACTIVE;
+}
+
+/* mmap the rawiso xmit/recv buffer */
+static int raw1394_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct file_info *fi = file->private_data;
+
+ if (fi->iso_state == RAW1394_ISO_INACTIVE)
+ return -EINVAL;
+
+ return dma_region_mmap(&fi->iso_handle->data_buf, file, vma);
+}
+
+/* ioctl is only used for rawiso operations */
+static int raw1394_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct file_info *fi = file->private_data;
+ void __user *argp = (void __user *)arg;
+
+ switch (fi->iso_state) {
+ case RAW1394_ISO_INACTIVE:
+ switch (cmd) {
+ case RAW1394_IOC_ISO_XMIT_INIT:
+ return raw1394_iso_xmit_init(fi, argp);
+ case RAW1394_IOC_ISO_RECV_INIT:
+ return raw1394_iso_recv_init(fi, argp);
+ default:
+ break;
+ }
+ break;
+ case RAW1394_ISO_RECV:
+ switch (cmd) {
+ case RAW1394_IOC_ISO_RECV_START:{
+ /* copy args from user-space */
+ int args[3];
+ if (copy_from_user
+ (&args[0], argp, sizeof(args)))
+ return -EFAULT;
+ return hpsb_iso_recv_start(fi->iso_handle,
+ args[0], args[1],
+ args[2]);
+ }
+ case RAW1394_IOC_ISO_XMIT_RECV_STOP:
+ hpsb_iso_stop(fi->iso_handle);
+ return 0;
+ case RAW1394_IOC_ISO_RECV_LISTEN_CHANNEL:
+ return hpsb_iso_recv_listen_channel(fi->iso_handle,
+ arg);
+ case RAW1394_IOC_ISO_RECV_UNLISTEN_CHANNEL:
+ return hpsb_iso_recv_unlisten_channel(fi->iso_handle,
+ arg);
+ case RAW1394_IOC_ISO_RECV_SET_CHANNEL_MASK:{
+ /* copy the u64 from user-space */
+ u64 mask;
+ if (copy_from_user(&mask, argp, sizeof(mask)))
+ return -EFAULT;
+ return hpsb_iso_recv_set_channel_mask(fi->
+ iso_handle,
+ mask);
+ }
+ case RAW1394_IOC_ISO_GET_STATUS:
+ return raw1394_iso_get_status(fi, argp);
+ case RAW1394_IOC_ISO_RECV_PACKETS:
+ return raw1394_iso_recv_packets(fi, argp);
+ case RAW1394_IOC_ISO_RECV_RELEASE_PACKETS:
+ return hpsb_iso_recv_release_packets(fi->iso_handle,
+ arg);
+ case RAW1394_IOC_ISO_RECV_FLUSH:
+ return hpsb_iso_recv_flush(fi->iso_handle);
+ case RAW1394_IOC_ISO_SHUTDOWN:
+ raw1394_iso_shutdown(fi);
+ return 0;
+ case RAW1394_IOC_ISO_QUEUE_ACTIVITY:
+ queue_rawiso_event(fi);
+ return 0;
+ }
+ break;
+ case RAW1394_ISO_XMIT:
+ switch (cmd) {
+ case RAW1394_IOC_ISO_XMIT_START:{
+ /* copy two ints from user-space */
+ int args[2];
+ if (copy_from_user
+ (&args[0], argp, sizeof(args)))
+ return -EFAULT;
+ return hpsb_iso_xmit_start(fi->iso_handle,
+ args[0], args[1]);
+ }
+ case RAW1394_IOC_ISO_XMIT_SYNC:
+ return hpsb_iso_xmit_sync(fi->iso_handle);
+ case RAW1394_IOC_ISO_XMIT_RECV_STOP:
+ hpsb_iso_stop(fi->iso_handle);
+ return 0;
+ case RAW1394_IOC_ISO_GET_STATUS:
+ return raw1394_iso_get_status(fi, argp);
+ case RAW1394_IOC_ISO_XMIT_PACKETS:
+ return raw1394_iso_send_packets(fi, argp);
+ case RAW1394_IOC_ISO_SHUTDOWN:
+ raw1394_iso_shutdown(fi);
+ return 0;
+ case RAW1394_IOC_ISO_QUEUE_ACTIVITY:
+ queue_rawiso_event(fi);
+ return 0;
+ }
+ break;
+ default:
+ break;
+ }
+
+ return -EINVAL;
+}
+
+static unsigned int raw1394_poll(struct file *file, poll_table * pt)
+{
+ struct file_info *fi = file->private_data;
+ unsigned int mask = POLLOUT | POLLWRNORM;
+
+ poll_wait(file, &fi->poll_wait_complete, pt);
+
+ spin_lock_irq(&fi->reqlists_lock);
+ if (!list_empty(&fi->req_complete)) {
+ mask |= POLLIN | POLLRDNORM;
+ }
+ spin_unlock_irq(&fi->reqlists_lock);
+
+ return mask;
+}
+
+static int raw1394_open(struct inode *inode, struct file *file)
+{
+ struct file_info *fi;
+
+ fi = kmalloc(sizeof(struct file_info), SLAB_KERNEL);
+ if (fi == NULL)
+ return -ENOMEM;
+
+ memset(fi, 0, sizeof(struct file_info));
+ fi->notification = (u8) RAW1394_NOTIFY_ON; /* busreset notification */
+
+ INIT_LIST_HEAD(&fi->list);
+ fi->state = opened;
+ INIT_LIST_HEAD(&fi->req_pending);
+ INIT_LIST_HEAD(&fi->req_complete);
+ sema_init(&fi->complete_sem, 0);
+ spin_lock_init(&fi->reqlists_lock);
+ init_waitqueue_head(&fi->poll_wait_complete);
+ INIT_LIST_HEAD(&fi->addr_list);
+
+ file->private_data = fi;
+
+ return 0;
+}
+
+static int raw1394_release(struct inode *inode, struct file *file)
+{
+ struct file_info *fi = file->private_data;
+ struct list_head *lh;
+ struct pending_request *req;
+ int done = 0, i, fail = 0;
+ int retval = 0;
+ struct list_head *entry;
+ struct arm_addr *addr = NULL;
+ struct host_info *hi;
+ struct file_info *fi_hlp = NULL;
+ struct arm_addr *arm_addr = NULL;
+ int another_host;
+ int csr_mod = 0;
+
+ if (fi->iso_state != RAW1394_ISO_INACTIVE)
+ raw1394_iso_shutdown(fi);
+
+ for (i = 0; i < 64; i++) {
+ if (fi->listen_channels & (1ULL << i)) {
+ hpsb_unlisten_channel(&raw1394_highlevel, fi->host, i);
+ }
+ }
+
+ spin_lock_irq(&host_info_lock);
+ fi->listen_channels = 0;
+ spin_unlock_irq(&host_info_lock);
+
+ fail = 0;
+ /* set address-entries invalid */
+ spin_lock_irq(&host_info_lock);
+
+ while (!list_empty(&fi->addr_list)) {
+ another_host = 0;
+ lh = fi->addr_list.next;
+ addr = list_entry(lh, struct arm_addr, addr_list);
+ /* another host with valid address-entry containing
+ same addressrange? */
+ list_for_each_entry(hi, &host_info_list, list) {
+ if (hi->host != fi->host) {
+ list_for_each_entry(fi_hlp, &hi->file_info_list,
+ list) {
+ entry = fi_hlp->addr_list.next;
+ while (entry != &(fi_hlp->addr_list)) {
+ arm_addr = list_entry(entry,
+ struct
+ arm_addr,
+ addr_list);
+ if (arm_addr->start ==
+ addr->start) {
+ DBGMSG
+ ("raw1394_release: "
+ "another host ownes "
+ "same addressrange");
+ another_host = 1;
+ break;
+ }
+ entry = entry->next;
+ }
+ if (another_host) {
+ break;
+ }
+ }
+ }
+ }
+ if (!another_host) {
+ DBGMSG("raw1394_release: call hpsb_arm_unregister");
+ retval =
+ hpsb_unregister_addrspace(&raw1394_highlevel,
+ fi->host, addr->start);
+ if (!retval) {
+ ++fail;
+ printk(KERN_ERR
+ "raw1394_release arm_Unregister failed\n");
+ }
+ }
+ DBGMSG("raw1394_release: delete addr_entry from list");
+ list_del(&addr->addr_list);
+ vfree(addr->addr_space_buffer);
+ kfree(addr);
+ } /* while */
+ spin_unlock_irq(&host_info_lock);
+ if (fail > 0) {
+ printk(KERN_ERR "raw1394: during addr_list-release "
+ "error(s) occurred \n");
+ }
+
+ while (!done) {
+ spin_lock_irq(&fi->reqlists_lock);
+
+ while (!list_empty(&fi->req_complete)) {
+ lh = fi->req_complete.next;
+ list_del(lh);
+
+ req = list_entry(lh, struct pending_request, list);
+
+ free_pending_request(req);
+ }
+
+ if (list_empty(&fi->req_pending))
+ done = 1;
+
+ spin_unlock_irq(&fi->reqlists_lock);
+
+ if (!done)
+ down_interruptible(&fi->complete_sem);
+ }
+
+ /* Remove any sub-trees left by user space programs */
+ for (i = 0; i < RAW1394_MAX_USER_CSR_DIRS; i++) {
+ struct csr1212_dentry *dentry;
+ if (!fi->csr1212_dirs[i])
+ continue;
+ for (dentry =
+ fi->csr1212_dirs[i]->value.directory.dentries_head; dentry;
+ dentry = dentry->next) {
+ csr1212_detach_keyval_from_directory(fi->host->csr.rom->
+ root_kv,
+ dentry->kv);
+ }
+ csr1212_release_keyval(fi->csr1212_dirs[i]);
+ fi->csr1212_dirs[i] = NULL;
+ csr_mod = 1;
+ }
+
+ if ((csr_mod || fi->cfgrom_upd)
+ && hpsb_update_config_rom_image(fi->host) < 0)
+ HPSB_ERR
+ ("Failed to generate Configuration ROM image for host %d",
+ fi->host->id);
+
+ if (fi->state == connected) {
+ spin_lock_irq(&host_info_lock);
+ list_del(&fi->list);
+ spin_unlock_irq(&host_info_lock);
+
+ put_device(&fi->host->device);
+ }
+
+ kfree(fi);
+
+ return 0;
+}
+
+/*** HOTPLUG STUFF **********************************************************/
+/*
+ * Export information about protocols/devices supported by this driver.
+ */
+static struct ieee1394_device_id raw1394_id_table[] = {
+ {
+ .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION,
+ .specifier_id = AVC_UNIT_SPEC_ID_ENTRY & 0xffffff,
+ .version = AVC_SW_VERSION_ENTRY & 0xffffff},
+ {
+ .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION,
+ .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff,
+ .version = CAMERA_SW_VERSION_ENTRY & 0xffffff},
+ {
+ .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION,
+ .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff,
+ .version = (CAMERA_SW_VERSION_ENTRY + 1) & 0xffffff},
+ {
+ .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION,
+ .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff,
+ .version = (CAMERA_SW_VERSION_ENTRY + 2) & 0xffffff},
+ {}
+};
+
+MODULE_DEVICE_TABLE(ieee1394, raw1394_id_table);
+
+static struct hpsb_protocol_driver raw1394_driver = {
+ .name = "raw1394 Driver",
+ .id_table = raw1394_id_table,
+ .driver = {
+ .name = "raw1394",
+ .bus = &ieee1394_bus_type,
+ },
+};
+
+/******************************************************************************/
+
+static struct hpsb_highlevel raw1394_highlevel = {
+ .name = RAW1394_DEVICE_NAME,
+ .add_host = add_host,
+ .remove_host = remove_host,
+ .host_reset = host_reset,
+ .iso_receive = iso_receive,
+ .fcp_request = fcp_request,
+};
+
+static struct cdev raw1394_cdev;
+static struct file_operations raw1394_fops = {
+ .owner = THIS_MODULE,
+ .read = raw1394_read,
+ .write = raw1394_write,
+ .mmap = raw1394_mmap,
+ .ioctl = raw1394_ioctl,
+ .poll = raw1394_poll,
+ .open = raw1394_open,
+ .release = raw1394_release,
+};
+
+static int __init init_raw1394(void)
+{
+ int ret = 0;
+
+ hpsb_register_highlevel(&raw1394_highlevel);
+
+ if (IS_ERR(class_simple_device_add(hpsb_protocol_class, MKDEV(
+ IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16),
+ NULL, RAW1394_DEVICE_NAME))) {
+ ret = -EFAULT;
+ goto out_unreg;
+ }
+
+ devfs_mk_cdev(MKDEV(
+ IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16),
+ S_IFCHR | S_IRUSR | S_IWUSR, RAW1394_DEVICE_NAME);
+
+ cdev_init(&raw1394_cdev, &raw1394_fops);
+ raw1394_cdev.owner = THIS_MODULE;
+ kobject_set_name(&raw1394_cdev.kobj, RAW1394_DEVICE_NAME);
+ ret = cdev_add(&raw1394_cdev, IEEE1394_RAW1394_DEV, 1);
+ if (ret) {
+ HPSB_ERR("raw1394 failed to register minor device block");
+ goto out_dev;
+ }
+
+ HPSB_INFO("raw1394: /dev/%s device initialized", RAW1394_DEVICE_NAME);
+
+ ret = hpsb_register_protocol(&raw1394_driver);
+ if (ret) {
+ HPSB_ERR("raw1394: failed to register protocol");
+ cdev_del(&raw1394_cdev);
+ goto out_dev;
+ }
+
+ goto out;
+
+out_dev:
+ devfs_remove(RAW1394_DEVICE_NAME);
+ class_simple_device_remove(MKDEV(
+ IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16));
+out_unreg:
+ hpsb_unregister_highlevel(&raw1394_highlevel);
+out:
+ return ret;
+}
+
+static void __exit cleanup_raw1394(void)
+{
+ class_simple_device_remove(MKDEV(
+ IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16));
+ cdev_del(&raw1394_cdev);
+ devfs_remove(RAW1394_DEVICE_NAME);
+ hpsb_unregister_highlevel(&raw1394_highlevel);
+ hpsb_unregister_protocol(&raw1394_driver);
+}
+
+module_init(init_raw1394);
+module_exit(cleanup_raw1394);
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_CHARDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16);