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Diffstat (limited to 'drivers/ieee1394/raw1394.c')
-rw-r--r--drivers/ieee1394/raw1394.c3096
1 files changed, 0 insertions, 3096 deletions
diff --git a/drivers/ieee1394/raw1394.c b/drivers/ieee1394/raw1394.c
deleted file mode 100644
index f340142..0000000
--- a/drivers/ieee1394/raw1394.c
+++ /dev/null
@@ -1,3096 +0,0 @@
-/*
- * 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/sched.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/fs.h>
-#include <linux/poll.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/vmalloc.h>
-#include <linux/cdev.h>
-#include <asm/uaccess.h>
-#include <asm/atomic.h>
-#include <linux/compat.h>
-
-#include "csr1212.h"
-#include "highlevel.h"
-#include "hosts.h"
-#include "ieee1394.h"
-#include "ieee1394_core.h"
-#include "ieee1394_hotplug.h"
-#include "ieee1394_transactions.h"
-#include "ieee1394_types.h"
-#include "iso.h"
-#include "nodemgr.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...) do {} while (0)
-#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 const 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(gfp_t flags)
-{
- struct pending_request *req;
-
- req = kzalloc(sizeof(*req), flags);
- if (req)
- INIT_LIST_HEAD(&req->list);
-
- return req;
-}
-
-static inline struct pending_request *alloc_pending_request(void)
-{
- return __alloc_pending_request(GFP_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_move_tail(&req->list, &fi->req_complete);
- wake_up(&fi->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 = kmalloc(sizeof(*hi), GFP_KERNEL);
-
- if (hi) {
- 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(GFP_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 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(GFP_ATOMIC);
- if (!req)
- break;
-
- if (!ibs) {
- ibs = kmalloc(sizeof(*ibs) + length,
- GFP_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);
-}
-
-#ifdef CONFIG_COMPAT
-struct compat_raw1394_req {
- __u32 type;
- __s32 error;
- __u32 misc;
-
- __u32 generation;
- __u32 length;
-
- __u64 address;
-
- __u64 tag;
-
- __u64 sendb;
- __u64 recvb;
-}
-#if defined(CONFIG_X86_64) || defined(CONFIG_IA64)
-__attribute__((packed))
-#endif
-;
-
-static const char __user *raw1394_compat_write(const char __user *buf)
-{
- struct compat_raw1394_req __user *cr = (typeof(cr)) buf;
- struct raw1394_request __user *r;
-
- r = compat_alloc_user_space(sizeof(struct raw1394_request));
-
-#define C(x) __copy_in_user(&r->x, &cr->x, sizeof(r->x))
-
- if (copy_in_user(r, cr, sizeof(struct compat_raw1394_req)) ||
- C(address) ||
- C(tag) ||
- C(sendb) ||
- C(recvb))
- return (__force const char __user *)ERR_PTR(-EFAULT);
-
- return (const char __user *)r;
-}
-#undef C
-
-#define P(x) __put_user(r->x, &cr->x)
-
-static int
-raw1394_compat_read(const char __user *buf, struct raw1394_request *r)
-{
- struct compat_raw1394_req __user *cr = (typeof(cr)) buf;
-
- if (!access_ok(VERIFY_WRITE, cr, sizeof(struct compat_raw1394_req)) ||
- P(type) ||
- P(error) ||
- P(misc) ||
- P(generation) ||
- P(length) ||
- P(address) ||
- P(tag) ||
- P(sendb) ||
- P(recvb))
- return -EFAULT;
-
- return sizeof(struct compat_raw1394_req);
-}
-#undef P
-
-#endif
-
-/* get next completed request (caller must hold fi->reqlists_lock) */
-static inline struct pending_request *__next_complete_req(struct file_info *fi)
-{
- struct list_head *lh;
- struct pending_request *req = NULL;
-
- if (!list_empty(&fi->req_complete)) {
- lh = fi->req_complete.next;
- list_del(lh);
- req = list_entry(lh, struct pending_request, list);
- }
- return req;
-}
-
-/* atomically get next completed request */
-static struct pending_request *next_complete_req(struct file_info *fi)
-{
- unsigned long flags;
- struct pending_request *req;
-
- spin_lock_irqsave(&fi->reqlists_lock, flags);
- req = __next_complete_req(fi);
- spin_unlock_irqrestore(&fi->reqlists_lock, flags);
- return req;
-}
-
-static ssize_t raw1394_read(struct file *file, char __user * buffer,
- size_t count, loff_t * offset_is_ignored)
-{
- struct file_info *fi = file->private_data;
- struct pending_request *req;
- ssize_t ret;
-
-#ifdef CONFIG_COMPAT
- if (count == sizeof(struct compat_raw1394_req)) {
- /* ok */
- } else
-#endif
- if (count != sizeof(struct raw1394_request)) {
- return -EINVAL;
- }
-
- if (!access_ok(VERIFY_WRITE, buffer, count)) {
- return -EFAULT;
- }
-
- if (file->f_flags & O_NONBLOCK) {
- if (!(req = next_complete_req(fi)))
- return -EAGAIN;
- } else {
- /*
- * NB: We call the macro wait_event_interruptible() with a
- * condition argument with side effect. This is only possible
- * because the side effect does not occur until the condition
- * became true, and wait_event_interruptible() won't evaluate
- * the condition again after that.
- */
- if (wait_event_interruptible(fi->wait_complete,
- (req = next_complete_req(fi))))
- return -ERESTARTSYS;
- }
-
- if (req->req.length) {
- if (copy_to_user(int2ptr(req->req.recvb), req->data,
- req->req.length)) {
- req->req.error = RAW1394_ERROR_MEMFAULT;
- }
- }
-
-#ifdef CONFIG_COMPAT
- if (count == sizeof(struct compat_raw1394_req) &&
- sizeof(struct compat_raw1394_req) !=
- sizeof(struct raw1394_request)) {
- ret = raw1394_compat_read(buffer, &req->req);
- } else
-#endif
- {
- 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 0;
-}
-
-static int state_initialized(struct file_info *fi, struct pending_request *req)
-{
- unsigned long flags;
- 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 0;
- }
-
- switch (req->req.type) {
- case RAW1394_REQ_LIST_CARDS:
- spin_lock_irqsave(&host_info_lock, flags);
- khl = kmalloc(sizeof(*khl) * host_count, GFP_ATOMIC);
-
- if (khl) {
- 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_irqrestore(&host_info_lock, flags);
-
- if (khl) {
- 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_irqsave(&host_info_lock, flags);
- if (req->req.misc >= host_count) {
- req->req.error = RAW1394_ERROR_INVALID_ARG;
- goto out_set_card;
- }
- list_for_each_entry(hi, &host_info_list, list)
- if (!req->req.misc--)
- break;
- get_device(&hi->host->device); /* FIXME handle failure case */
- list_add_tail(&fi->list, &hi->file_info_list);
-
- /* prevent unloading of the host's low-level driver */
- if (!try_module_get(hi->host->driver->owner)) {
- req->req.error = RAW1394_ERROR_ABORTED;
- goto out_set_card;
- }
- WARN_ON(fi->host);
- 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;
-out_set_card:
- spin_unlock_irqrestore(&host_info_lock, flags);
-
- req->req.length = 0;
- break;
-
- default:
- req->req.error = RAW1394_ERROR_STATE_ORDER;
- req->req.length = 0;
- break;
- }
-
- queue_complete_req(req);
- return 0;
-}
-
-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)
-{
- unsigned long flags;
- 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 0;
- }
-
- hpsb_set_packet_complete_task(packet,
- (void (*)(void *))queue_complete_cb, req);
-
- spin_lock_irqsave(&fi->reqlists_lock, flags);
- list_add_tail(&req->list, &fi->req_pending);
- spin_unlock_irqrestore(&fi->reqlists_lock, flags);
-
- 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 0;
-}
-
-static int handle_async_send(struct file_info *fi, struct pending_request *req)
-{
- unsigned long flags;
- struct hpsb_packet *packet;
- int header_length = req->req.misc & 0xffff;
- int expect_response = req->req.misc >> 16;
- size_t data_size;
-
- if (header_length > req->req.length || header_length < 12 ||
- header_length > FIELD_SIZEOF(struct hpsb_packet, header)) {
- req->req.error = RAW1394_ERROR_INVALID_ARG;
- req->req.length = 0;
- queue_complete_req(req);
- return 0;
- }
-
- data_size = req->req.length - header_length;
- packet = hpsb_alloc_packet(data_size);
- 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 0;
- }
-
- if (copy_from_user
- (packet->data, int2ptr(req->req.sendb) + header_length,
- data_size)) {
- req->req.error = RAW1394_ERROR_MEMFAULT;
- req->req.length = 0;
- queue_complete_req(req);
- return 0;
- }
-
- 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 = data_size;
-
- req->req.length = 0;
- hpsb_set_packet_complete_task(packet,
- (void (*)(void *))queue_complete_cb, req);
-
- spin_lock_irqsave(&fi->reqlists_lock, flags);
- list_add_tail(&req->list, &fi->req_pending);
- spin_unlock_irqrestore(&fi->reqlists_lock, flags);
-
- /* 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 0;
-}
-
-static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer,
- u64 addr, size_t length, u16 flags)
-{
- unsigned long irqflags;
- 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_irqsave(&host_info_lock, irqflags);
- 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_irqrestore(&host_info_lock, irqflags);
- 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(GFP_ATOMIC);
- if (!req) {
- DBGMSG("arm_read -> rcode_conflict_error");
- spin_unlock_irqrestore(&host_info_lock, irqflags);
- 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, GFP_ATOMIC);
- if (!(req->data)) {
- free_pending_request(req);
- DBGMSG("arm_read -> rcode_conflict_error");
- spin_unlock_irqrestore(&host_info_lock, irqflags);
- 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_irqrestore(&host_info_lock, irqflags);
- return (rcode);
-}
-
-static int arm_write(struct hpsb_host *host, int nodeid, int destid,
- quadlet_t * data, u64 addr, size_t length, u16 flags)
-{
- unsigned long irqflags;
- 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_write called by node: %X "
- "addr: %4.4x %8.8x length: %Zu", nodeid,
- (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF),
- length);
- spin_lock_irqsave(&host_info_lock, irqflags);
- 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_irqrestore(&host_info_lock, irqflags);
- 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");
- 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(GFP_ATOMIC);
- if (!req) {
- DBGMSG("arm_write -> rcode_conflict_error");
- spin_unlock_irqrestore(&host_info_lock, irqflags);
- 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, GFP_ATOMIC);
- if (!(req->data)) {
- free_pending_request(req);
- DBGMSG("arm_write -> rcode_conflict_error");
- spin_unlock_irqrestore(&host_info_lock, irqflags);
- 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_irqrestore(&host_info_lock, irqflags);
- 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)
-{
- unsigned long irqflags;
- 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_irqsave(&host_info_lock, irqflags);
- 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_irqrestore(&host_info_lock, irqflags);
- 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(GFP_ATOMIC);
- if (!req) {
- DBGMSG("arm_lock -> rcode_conflict_error");
- spin_unlock_irqrestore(&host_info_lock, irqflags);
- 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, GFP_ATOMIC);
- if (!(req->data)) {
- free_pending_request(req);
- DBGMSG("arm_lock -> rcode_conflict_error");
- spin_unlock_irqrestore(&host_info_lock, irqflags);
- 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_irqrestore(&host_info_lock, irqflags);
- 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)
-{
- unsigned long irqflags;
- 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_irqsave(&host_info_lock, irqflags);
- 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_irqrestore(&host_info_lock, irqflags);
- 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(GFP_ATOMIC);
- if (!req) {
- spin_unlock_irqrestore(&host_info_lock, irqflags);
- 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, GFP_ATOMIC);
- if (!(req->data)) {
- free_pending_request(req);
- spin_unlock_irqrestore(&host_info_lock, irqflags);
- 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_irqrestore(&host_info_lock, irqflags);
- 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 = kmalloc(sizeof(*addr), GFP_KERNEL);
- if (!addr) {
- req->req.length = 0;
- return (-ENOMEM);
- }
- /* allocation of addr_space_buffer */
- addr->addr_space_buffer = 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 */
- spin_unlock_irqrestore(&host_info_lock, flags);
- vfree(addr->addr_space_buffer);
- kfree(addr);
- 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;
- }
- }
- }
- }
- spin_unlock_irqrestore(&host_info_lock, flags);
-
- 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);
- return (-EFAULT);
- }
- free_pending_request(req); /* immediate success or fail */
- /* INSERT ENTRY */
- spin_lock_irqsave(&host_info_lock, flags);
- list_add_tail(&addr->addr_list, &fi->addr_list);
- spin_unlock_irqrestore(&host_info_lock, flags);
- return 0;
- }
- retval =
- hpsb_register_addrspace(&raw1394_highlevel, fi->host, &arm_ops,
- req->req.address,
- req->req.address + req->req.length);
- if (retval) {
- /* INSERT ENTRY */
- spin_lock_irqsave(&host_info_lock, flags);
- list_add_tail(&addr->addr_list, &fi->addr_list);
- spin_unlock_irqrestore(&host_info_lock, flags);
- } else {
- DBGMSG("arm_register failed errno: %d \n", retval);
- vfree(addr->addr_space_buffer);
- kfree(addr);
- return (-EALREADY);
- }
- free_pending_request(req); /* immediate success or fail */
- return 0;
-}
-
-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);
- spin_unlock_irqrestore(&host_info_lock, flags);
- vfree(addr->addr_space_buffer);
- kfree(addr);
- free_pending_request(req); /* immediate success or fail */
- return 0;
- }
- 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 0;
-}
-
-/* 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;
- spin_unlock_irqrestore(&host_info_lock, flags);
-
- 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))
- return (-EFAULT);
-
- /* We have to free the request, because we
- * queue no response, and therefore nobody
- * will free it. */
- free_pending_request(req);
- return 0;
- } 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;
- spin_unlock_irqrestore(&host_info_lock, flags);
-
- 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))
- return (-EFAULT);
-
- /* We have to free the request, because we
- * queue no response, and therefore nobody
- * will free it. */
- free_pending_request(req);
- return 0;
- } 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 0;
- }
- /* 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;
- unsigned long flags;
-
- 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_irqsave(&fi->reqlists_lock, flags);
- list_add_tail(&req->list, &fi->req_pending);
- spin_unlock_irqrestore(&fi->reqlists_lock, flags);
- 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 0;
-}
-
-static int get_config_rom(struct file_info *fi, struct pending_request *req)
-{
- int ret = 0;
- quadlet_t *data = kmalloc(req->req.length, GFP_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 = 0;
- quadlet_t *data = kmalloc(req->req.length, GFP_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 0;
- }
- }
-
- 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(*cache->filled_head), 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;
- 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);
- CSR1212_FREE(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 0;
- } 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 0;
-
- 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_SEND:
- case RAW1394_REQ_ISO_LISTEN:
- printk(KERN_DEBUG "raw1394: old iso ABI has been removed\n");
- req->req.error = RAW1394_ERROR_COMPAT;
- req->req.misc = RAW1394_KERNELAPI_VERSION;
- queue_complete_req(req);
- return 0;
-
- case RAW1394_REQ_FCP_LISTEN:
- handle_fcp_listen(fi, req);
- return 0;
-
- 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 0;
- }
- 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 0;
- }
- /* 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 0;
- }
-
- 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 0;
- }
-
- 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 = file->private_data;
- struct pending_request *req;
- ssize_t retval = -EBADFD;
-
-#ifdef CONFIG_COMPAT
- if (count == sizeof(struct compat_raw1394_req) &&
- sizeof(struct compat_raw1394_req) !=
- sizeof(struct raw1394_request)) {
- buffer = raw1394_compat_write(buffer);
- if (IS_ERR((__force void *)buffer))
- return PTR_ERR((__force void *)buffer);
- } else
-#endif
- 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;
- }
-
- if (!mutex_trylock(&fi->state_mutex)) {
- free_pending_request(req);
- return -EAGAIN;
- }
-
- 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;
- }
-
- mutex_unlock(&fi->state_mutex);
-
- if (retval < 0) {
- free_pending_request(req);
- } else {
- BUG_ON(retval);
- retval = count;
- }
-
- 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(GFP_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)
-{
- int overflows = atomic_read(&iso->overflows);
- int skips = atomic_read(&iso->skips);
-
- 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 = ((skips & 0xFFFF) << 16) | ((overflows & 0xFFFF));
- 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);
- /* reset skip counter */
- atomic_set(&iso->skips, 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 >= fi->iso_handle->buf_packets)
- return -EINVAL;
-
- if (upackets.n_packets >= hpsb_iso_n_ready(fi->iso_handle))
- return -EAGAIN;
-
- /* 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;
-}
-
-static int raw1394_read_cycle_timer(struct file_info *fi, void __user * uaddr)
-{
- struct raw1394_cycle_timer ct;
- int err;
-
- err = hpsb_read_cycle_timer(fi->host, &ct.cycle_timer, &ct.local_time);
- if (!err)
- if (copy_to_user(uaddr, &ct, sizeof(ct)))
- err = -EFAULT;
- return err;
-}
-
-/* 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;
- int ret;
-
- if (!mutex_trylock(&fi->state_mutex))
- return -EAGAIN;
-
- if (fi->iso_state == RAW1394_ISO_INACTIVE)
- ret = -EINVAL;
- else
- ret = dma_region_mmap(&fi->iso_handle->data_buf, file, vma);
-
- mutex_unlock(&fi->state_mutex);
-
- return ret;
-}
-
-static long raw1394_ioctl_inactive(struct file_info *fi, unsigned int cmd,
- void __user *argp)
-{
- 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:
- return -EINVAL;
- }
-}
-
-static long raw1394_ioctl_recv(struct file_info *fi, unsigned int cmd,
- unsigned long arg)
-{
- void __user *argp = (void __user *)arg;
-
- switch (cmd) {
- case RAW1394_IOC_ISO_RECV_START:{
- 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:{
- 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;
- default:
- return -EINVAL;
- }
-}
-
-static long raw1394_ioctl_xmit(struct file_info *fi, unsigned int cmd,
- void __user *argp)
-{
- switch (cmd) {
- case RAW1394_IOC_ISO_XMIT_START:{
- 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;
- default:
- return -EINVAL;
- }
-}
-
-/* ioctl is only used for rawiso operations */
-static long raw1394_ioctl(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- struct file_info *fi = file->private_data;
- void __user *argp = (void __user *)arg;
- long ret;
-
- /* state-independent commands */
- switch(cmd) {
- case RAW1394_IOC_GET_CYCLE_TIMER:
- return raw1394_read_cycle_timer(fi, argp);
- default:
- break;
- }
-
- if (!mutex_trylock(&fi->state_mutex))
- return -EAGAIN;
-
- switch (fi->iso_state) {
- case RAW1394_ISO_INACTIVE:
- ret = raw1394_ioctl_inactive(fi, cmd, argp);
- break;
- case RAW1394_ISO_RECV:
- ret = raw1394_ioctl_recv(fi, cmd, arg);
- break;
- case RAW1394_ISO_XMIT:
- ret = raw1394_ioctl_xmit(fi, cmd, argp);
- break;
- default:
- ret = -EINVAL;
- break;
- }
-
- mutex_unlock(&fi->state_mutex);
-
- return ret;
-}
-
-#ifdef CONFIG_COMPAT
-struct raw1394_iso_packets32 {
- __u32 n_packets;
- compat_uptr_t infos;
-} __attribute__((packed));
-
-struct raw1394_cycle_timer32 {
- __u32 cycle_timer;
- __u64 local_time;
-}
-#if defined(CONFIG_X86_64) || defined(CONFIG_IA64)
-__attribute__((packed))
-#endif
-;
-
-#define RAW1394_IOC_ISO_RECV_PACKETS32 \
- _IOW ('#', 0x25, struct raw1394_iso_packets32)
-#define RAW1394_IOC_ISO_XMIT_PACKETS32 \
- _IOW ('#', 0x27, struct raw1394_iso_packets32)
-#define RAW1394_IOC_GET_CYCLE_TIMER32 \
- _IOR ('#', 0x30, struct raw1394_cycle_timer32)
-
-static long raw1394_iso_xmit_recv_packets32(struct file *file, unsigned int cmd,
- struct raw1394_iso_packets32 __user *arg)
-{
- compat_uptr_t infos32;
- void __user *infos;
- long err = -EFAULT;
- struct raw1394_iso_packets __user *dst = compat_alloc_user_space(sizeof(struct raw1394_iso_packets));
-
- if (!copy_in_user(&dst->n_packets, &arg->n_packets, sizeof arg->n_packets) &&
- !copy_from_user(&infos32, &arg->infos, sizeof infos32)) {
- infos = compat_ptr(infos32);
- if (!copy_to_user(&dst->infos, &infos, sizeof infos))
- err = raw1394_ioctl(file, cmd, (unsigned long)dst);
- }
- return err;
-}
-
-static long raw1394_read_cycle_timer32(struct file_info *fi, void __user * uaddr)
-{
- struct raw1394_cycle_timer32 ct;
- int err;
-
- err = hpsb_read_cycle_timer(fi->host, &ct.cycle_timer, &ct.local_time);
- if (!err)
- if (copy_to_user(uaddr, &ct, sizeof(ct)))
- err = -EFAULT;
- return err;
-}
-
-static long raw1394_compat_ioctl(struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- struct file_info *fi = file->private_data;
- void __user *argp = (void __user *)arg;
- long err;
-
- switch (cmd) {
- /* These requests have same format as long as 'int' has same size. */
- case RAW1394_IOC_ISO_RECV_INIT:
- case RAW1394_IOC_ISO_RECV_START:
- case RAW1394_IOC_ISO_RECV_LISTEN_CHANNEL:
- case RAW1394_IOC_ISO_RECV_UNLISTEN_CHANNEL:
- case RAW1394_IOC_ISO_RECV_SET_CHANNEL_MASK:
- case RAW1394_IOC_ISO_RECV_RELEASE_PACKETS:
- case RAW1394_IOC_ISO_RECV_FLUSH:
- case RAW1394_IOC_ISO_XMIT_RECV_STOP:
- case RAW1394_IOC_ISO_XMIT_INIT:
- case RAW1394_IOC_ISO_XMIT_START:
- case RAW1394_IOC_ISO_XMIT_SYNC:
- case RAW1394_IOC_ISO_GET_STATUS:
- case RAW1394_IOC_ISO_SHUTDOWN:
- case RAW1394_IOC_ISO_QUEUE_ACTIVITY:
- err = raw1394_ioctl(file, cmd, arg);
- break;
- /* These request have different format. */
- case RAW1394_IOC_ISO_RECV_PACKETS32:
- err = raw1394_iso_xmit_recv_packets32(file, RAW1394_IOC_ISO_RECV_PACKETS, argp);
- break;
- case RAW1394_IOC_ISO_XMIT_PACKETS32:
- err = raw1394_iso_xmit_recv_packets32(file, RAW1394_IOC_ISO_XMIT_PACKETS, argp);
- break;
- case RAW1394_IOC_GET_CYCLE_TIMER32:
- err = raw1394_read_cycle_timer32(fi, argp);
- break;
- default:
- err = -EINVAL;
- break;
- }
-
- return err;
-}
-#endif
-
-static unsigned int raw1394_poll(struct file *file, poll_table * pt)
-{
- struct file_info *fi = file->private_data;
- unsigned int mask = POLLOUT | POLLWRNORM;
- unsigned long flags;
-
- poll_wait(file, &fi->wait_complete, pt);
-
- spin_lock_irqsave(&fi->reqlists_lock, flags);
- if (!list_empty(&fi->req_complete)) {
- mask |= POLLIN | POLLRDNORM;
- }
- spin_unlock_irqrestore(&fi->reqlists_lock, flags);
-
- return mask;
-}
-
-static int raw1394_open(struct inode *inode, struct file *file)
-{
- struct file_info *fi;
-
- fi = kzalloc(sizeof(*fi), GFP_KERNEL);
- if (!fi)
- return -ENOMEM;
-
- fi->notification = (u8) RAW1394_NOTIFY_ON; /* busreset notification */
-
- INIT_LIST_HEAD(&fi->list);
- mutex_init(&fi->state_mutex);
- fi->state = opened;
- INIT_LIST_HEAD(&fi->req_pending);
- INIT_LIST_HEAD(&fi->req_complete);
- spin_lock_init(&fi->reqlists_lock);
- init_waitqueue_head(&fi->wait_complete);
- INIT_LIST_HEAD(&fi->addr_list);
-
- file->private_data = fi;
-
- return nonseekable_open(inode, file);
-}
-
-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 i, fail;
- 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;
- unsigned long flags;
-
- if (fi->iso_state != RAW1394_ISO_INACTIVE)
- raw1394_iso_shutdown(fi);
-
- spin_lock_irqsave(&host_info_lock, flags);
-
- fail = 0;
- /* set address-entries invalid */
-
- 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_irqrestore(&host_info_lock, flags);
- if (fail > 0) {
- printk(KERN_ERR "raw1394: during addr_list-release "
- "error(s) occurred \n");
- }
-
- for (;;) {
- /* This locked section guarantees that neither
- * complete nor pending requests exist once i!=0 */
- spin_lock_irqsave(&fi->reqlists_lock, flags);
- while ((req = __next_complete_req(fi)))
- free_pending_request(req);
-
- i = list_empty(&fi->req_pending);
- spin_unlock_irqrestore(&fi->reqlists_lock, flags);
-
- if (i)
- break;
- /*
- * Sleep until more requests can be freed.
- *
- * NB: We call the macro wait_event() with a condition argument
- * with side effect. This is only possible because the side
- * effect does not occur until the condition became true, and
- * wait_event() won't evaluate the condition again after that.
- */
- wait_event(fi->wait_complete, (req = next_complete_req(fi)));
- free_pending_request(req);
- }
-
- /* 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_irqsave(&host_info_lock, flags);
- list_del(&fi->list);
- spin_unlock_irqrestore(&host_info_lock, flags);
-
- put_device(&fi->host->device);
- }
-
- spin_lock_irqsave(&host_info_lock, flags);
- if (fi->host)
- module_put(fi->host->driver->owner);
- spin_unlock_irqrestore(&host_info_lock, flags);
-
- kfree(fi);
-
- return 0;
-}
-
-/*** HOTPLUG STUFF **********************************************************/
-/*
- * Export information about protocols/devices supported by this driver.
- */
-#ifdef MODULE
-static const 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);
-#endif /* MODULE */
-
-static struct hpsb_protocol_driver raw1394_driver = {
- .name = "raw1394",
-};
-
-/******************************************************************************/
-
-static struct hpsb_highlevel raw1394_highlevel = {
- .name = RAW1394_DEVICE_NAME,
- .add_host = add_host,
- .remove_host = remove_host,
- .host_reset = host_reset,
- .fcp_request = fcp_request,
-};
-
-static struct cdev raw1394_cdev;
-static const struct file_operations raw1394_fops = {
- .owner = THIS_MODULE,
- .read = raw1394_read,
- .write = raw1394_write,
- .mmap = raw1394_mmap,
- .unlocked_ioctl = raw1394_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = raw1394_compat_ioctl,
-#endif
- .poll = raw1394_poll,
- .open = raw1394_open,
- .release = raw1394_release,
- .llseek = no_llseek,
-};
-
-static int __init init_raw1394(void)
-{
- int ret = 0;
-
- hpsb_register_highlevel(&raw1394_highlevel);
-
- if (IS_ERR
- (device_create(hpsb_protocol_class, NULL,
- MKDEV(IEEE1394_MAJOR,
- IEEE1394_MINOR_BLOCK_RAW1394 * 16),
- NULL, RAW1394_DEVICE_NAME))) {
- ret = -EFAULT;
- goto out_unreg;
- }
-
- cdev_init(&raw1394_cdev, &raw1394_fops);
- raw1394_cdev.owner = THIS_MODULE;
- 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:
- device_destroy(hpsb_protocol_class,
- MKDEV(IEEE1394_MAJOR,
- IEEE1394_MINOR_BLOCK_RAW1394 * 16));
- out_unreg:
- hpsb_unregister_highlevel(&raw1394_highlevel);
- out:
- return ret;
-}
-
-static void __exit cleanup_raw1394(void)
-{
- device_destroy(hpsb_protocol_class,
- MKDEV(IEEE1394_MAJOR,
- IEEE1394_MINOR_BLOCK_RAW1394 * 16));
- cdev_del(&raw1394_cdev);
- hpsb_unregister_highlevel(&raw1394_highlevel);
- hpsb_unregister_protocol(&raw1394_driver);
-}
-
-module_init(init_raw1394);
-module_exit(cleanup_raw1394);
-MODULE_LICENSE("GPL");
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