4 * Raw interface to the bus
6 * Copyright (C) 1999, 2000 Andreas E. Bombe
7 * 2001, 2002 Manfred Weihs <weihs@ict.tuwien.ac.at>
8 * 2002 Christian Toegel <christian.toegel@gmx.at>
10 * This code is licensed under the GPL. See the file COPYING in the root
11 * directory of the kernel sources for details.
16 * Manfred Weihs <weihs@ict.tuwien.ac.at>
17 * configuration ROM manipulation
18 * address range mapping
19 * adaptation for new (transparent) loopback mechanism
20 * sending of arbitrary async packets
21 * Christian Toegel <christian.toegel@gmx.at>
22 * address range mapping
24 * transmit physical packet
25 * busreset notification control (switch on/off)
26 * busreset with selection of type (short/long)
30 #include <linux/kernel.h>
31 #include <linux/list.h>
32 #include <linux/sched.h>
33 #include <linux/string.h>
34 #include <linux/slab.h>
36 #include <linux/poll.h>
37 #include <linux/module.h>
38 #include <linux/mutex.h>
39 #include <linux/init.h>
40 #include <linux/interrupt.h>
41 #include <linux/vmalloc.h>
42 #include <linux/cdev.h>
43 #include <asm/uaccess.h>
44 #include <asm/atomic.h>
45 #include <linux/compat.h>
48 #include "highlevel.h"
51 #include "ieee1394_core.h"
52 #include "ieee1394_hotplug.h"
53 #include "ieee1394_transactions.h"
54 #include "ieee1394_types.h"
58 #include "raw1394-private.h"
60 #define int2ptr(x) ((void __user *)(unsigned long)x)
61 #define ptr2int(x) ((u64)(unsigned long)(void __user *)x)
63 #ifdef CONFIG_IEEE1394_VERBOSEDEBUG
68 #define DBGMSG(fmt, args...) \
69 printk(KERN_INFO "raw1394:" fmt "\n" , ## args)
71 #define DBGMSG(fmt, args...) do {} while (0)
74 static LIST_HEAD(host_info_list);
75 static int host_count;
76 static DEFINE_SPINLOCK(host_info_lock);
77 static atomic_t internal_generation = ATOMIC_INIT(0);
79 static atomic_t iso_buffer_size;
80 static const int iso_buffer_max = 4 * 1024 * 1024; /* 4 MB */
82 static struct hpsb_highlevel raw1394_highlevel;
84 static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer,
85 u64 addr, size_t length, u16 flags);
86 static int arm_write(struct hpsb_host *host, int nodeid, int destid,
87 quadlet_t * data, u64 addr, size_t length, u16 flags);
88 static int arm_lock(struct hpsb_host *host, int nodeid, quadlet_t * store,
89 u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode,
91 static int arm_lock64(struct hpsb_host *host, int nodeid, octlet_t * store,
92 u64 addr, octlet_t data, octlet_t arg, int ext_tcode,
94 static const struct hpsb_address_ops arm_ops = {
101 static void queue_complete_cb(struct pending_request *req);
103 static struct pending_request *__alloc_pending_request(gfp_t flags)
105 struct pending_request *req;
107 req = kzalloc(sizeof(*req), flags);
109 INIT_LIST_HEAD(&req->list);
114 static inline struct pending_request *alloc_pending_request(void)
116 return __alloc_pending_request(GFP_KERNEL);
119 static void free_pending_request(struct pending_request *req)
122 if (atomic_dec_and_test(&req->ibs->refcount)) {
123 atomic_sub(req->ibs->data_size, &iso_buffer_size);
126 } else if (req->free_data) {
129 hpsb_free_packet(req->packet);
133 /* fi->reqlists_lock must be taken */
134 static void __queue_complete_req(struct pending_request *req)
136 struct file_info *fi = req->file_info;
138 list_move_tail(&req->list, &fi->req_complete);
139 wake_up(&fi->wait_complete);
142 static void queue_complete_req(struct pending_request *req)
145 struct file_info *fi = req->file_info;
147 spin_lock_irqsave(&fi->reqlists_lock, flags);
148 __queue_complete_req(req);
149 spin_unlock_irqrestore(&fi->reqlists_lock, flags);
152 static void queue_complete_cb(struct pending_request *req)
154 struct hpsb_packet *packet = req->packet;
155 int rcode = (packet->header[1] >> 12) & 0xf;
157 switch (packet->ack_code) {
159 case ACKX_SEND_ERROR:
160 req->req.error = RAW1394_ERROR_SEND_ERROR;
163 req->req.error = RAW1394_ERROR_ABORTED;
166 req->req.error = RAW1394_ERROR_TIMEOUT;
169 req->req.error = (packet->ack_code << 16) | rcode;
173 if (!((packet->ack_code == ACK_PENDING) && (rcode == RCODE_COMPLETE))) {
177 if ((req->req.type == RAW1394_REQ_ASYNC_READ) ||
178 (req->req.type == RAW1394_REQ_ASYNC_WRITE) ||
179 (req->req.type == RAW1394_REQ_ASYNC_STREAM) ||
180 (req->req.type == RAW1394_REQ_LOCK) ||
181 (req->req.type == RAW1394_REQ_LOCK64))
182 hpsb_free_tlabel(packet);
184 queue_complete_req(req);
187 static void add_host(struct hpsb_host *host)
189 struct host_info *hi;
192 hi = kmalloc(sizeof(*hi), GFP_KERNEL);
195 INIT_LIST_HEAD(&hi->list);
197 INIT_LIST_HEAD(&hi->file_info_list);
199 spin_lock_irqsave(&host_info_lock, flags);
200 list_add_tail(&hi->list, &host_info_list);
202 spin_unlock_irqrestore(&host_info_lock, flags);
205 atomic_inc(&internal_generation);
208 static struct host_info *find_host_info(struct hpsb_host *host)
210 struct host_info *hi;
212 list_for_each_entry(hi, &host_info_list, list)
213 if (hi->host == host)
219 static void remove_host(struct hpsb_host *host)
221 struct host_info *hi;
224 spin_lock_irqsave(&host_info_lock, flags);
225 hi = find_host_info(host);
231 FIXME: address ranges should be removed
232 and fileinfo states should be initialized
233 (including setting generation to
234 internal-generation ...)
237 spin_unlock_irqrestore(&host_info_lock, flags);
240 printk(KERN_ERR "raw1394: attempt to remove unknown host "
247 atomic_inc(&internal_generation);
250 static void host_reset(struct hpsb_host *host)
253 struct host_info *hi;
254 struct file_info *fi;
255 struct pending_request *req;
257 spin_lock_irqsave(&host_info_lock, flags);
258 hi = find_host_info(host);
261 list_for_each_entry(fi, &hi->file_info_list, list) {
262 if (fi->notification == RAW1394_NOTIFY_ON) {
263 req = __alloc_pending_request(GFP_ATOMIC);
267 req->req.type = RAW1394_REQ_BUS_RESET;
268 req->req.generation =
269 get_hpsb_generation(host);
270 req->req.misc = (host->node_id << 16)
272 if (fi->protocol_version > 3) {
279 queue_complete_req(req);
284 spin_unlock_irqrestore(&host_info_lock, flags);
287 static void fcp_request(struct hpsb_host *host, int nodeid, int direction,
288 int cts, u8 * data, size_t length)
291 struct host_info *hi;
292 struct file_info *fi;
293 struct pending_request *req, *req_next;
294 struct iso_block_store *ibs = NULL;
297 if ((atomic_read(&iso_buffer_size) + length) > iso_buffer_max) {
298 HPSB_INFO("dropped fcp request");
302 spin_lock_irqsave(&host_info_lock, flags);
303 hi = find_host_info(host);
306 list_for_each_entry(fi, &hi->file_info_list, list) {
310 req = __alloc_pending_request(GFP_ATOMIC);
315 ibs = kmalloc(sizeof(*ibs) + length,
322 atomic_add(length, &iso_buffer_size);
323 atomic_set(&ibs->refcount, 0);
324 ibs->data_size = length;
325 memcpy(ibs->data, data, length);
328 atomic_inc(&ibs->refcount);
332 req->data = ibs->data;
333 req->req.type = RAW1394_REQ_FCP_REQUEST;
334 req->req.generation = get_hpsb_generation(host);
335 req->req.misc = nodeid | (direction << 16);
336 req->req.recvb = ptr2int(fi->fcp_buffer);
337 req->req.length = length;
339 list_add_tail(&req->list, &reqs);
342 spin_unlock_irqrestore(&host_info_lock, flags);
344 list_for_each_entry_safe(req, req_next, &reqs, list)
345 queue_complete_req(req);
349 struct compat_raw1394_req {
364 #if defined(CONFIG_X86_64) || defined(CONFIG_IA64)
365 __attribute__((packed))
369 static const char __user *raw1394_compat_write(const char __user *buf)
371 struct compat_raw1394_req __user *cr = (typeof(cr)) buf;
372 struct raw1394_request __user *r;
374 r = compat_alloc_user_space(sizeof(struct raw1394_request));
376 #define C(x) __copy_in_user(&r->x, &cr->x, sizeof(r->x))
378 if (copy_in_user(r, cr, sizeof(struct compat_raw1394_req)) ||
383 return (__force const char __user *)ERR_PTR(-EFAULT);
385 return (const char __user *)r;
389 #define P(x) __put_user(r->x, &cr->x)
392 raw1394_compat_read(const char __user *buf, struct raw1394_request *r)
394 struct compat_raw1394_req __user *cr = (typeof(cr)) buf;
396 if (!access_ok(VERIFY_WRITE, cr, sizeof(struct compat_raw1394_req)) ||
408 return sizeof(struct compat_raw1394_req);
414 /* get next completed request (caller must hold fi->reqlists_lock) */
415 static inline struct pending_request *__next_complete_req(struct file_info *fi)
417 struct list_head *lh;
418 struct pending_request *req = NULL;
420 if (!list_empty(&fi->req_complete)) {
421 lh = fi->req_complete.next;
423 req = list_entry(lh, struct pending_request, list);
428 /* atomically get next completed request */
429 static struct pending_request *next_complete_req(struct file_info *fi)
432 struct pending_request *req;
434 spin_lock_irqsave(&fi->reqlists_lock, flags);
435 req = __next_complete_req(fi);
436 spin_unlock_irqrestore(&fi->reqlists_lock, flags);
440 static ssize_t raw1394_read(struct file *file, char __user * buffer,
441 size_t count, loff_t * offset_is_ignored)
443 struct file_info *fi = (struct file_info *)file->private_data;
444 struct pending_request *req;
448 if (count == sizeof(struct compat_raw1394_req)) {
452 if (count != sizeof(struct raw1394_request)) {
456 if (!access_ok(VERIFY_WRITE, buffer, count)) {
460 if (file->f_flags & O_NONBLOCK) {
461 if (!(req = next_complete_req(fi)))
465 * NB: We call the macro wait_event_interruptible() with a
466 * condition argument with side effect. This is only possible
467 * because the side effect does not occur until the condition
468 * became true, and wait_event_interruptible() won't evaluate
469 * the condition again after that.
471 if (wait_event_interruptible(fi->wait_complete,
472 (req = next_complete_req(fi))))
476 if (req->req.length) {
477 if (copy_to_user(int2ptr(req->req.recvb), req->data,
479 req->req.error = RAW1394_ERROR_MEMFAULT;
484 if (count == sizeof(struct compat_raw1394_req) &&
485 sizeof(struct compat_raw1394_req) !=
486 sizeof(struct raw1394_request)) {
487 ret = raw1394_compat_read(buffer, &req->req);
491 if (copy_to_user(buffer, &req->req, sizeof(req->req))) {
495 ret = (ssize_t) sizeof(struct raw1394_request);
498 free_pending_request(req);
502 static int state_opened(struct file_info *fi, struct pending_request *req)
504 if (req->req.type == RAW1394_REQ_INITIALIZE) {
505 switch (req->req.misc) {
506 case RAW1394_KERNELAPI_VERSION:
508 fi->state = initialized;
509 fi->protocol_version = req->req.misc;
510 req->req.error = RAW1394_ERROR_NONE;
511 req->req.generation = atomic_read(&internal_generation);
515 req->req.error = RAW1394_ERROR_COMPAT;
516 req->req.misc = RAW1394_KERNELAPI_VERSION;
519 req->req.error = RAW1394_ERROR_STATE_ORDER;
523 queue_complete_req(req);
527 static int state_initialized(struct file_info *fi, struct pending_request *req)
530 struct host_info *hi;
531 struct raw1394_khost_list *khl;
533 if (req->req.generation != atomic_read(&internal_generation)) {
534 req->req.error = RAW1394_ERROR_GENERATION;
535 req->req.generation = atomic_read(&internal_generation);
537 queue_complete_req(req);
541 switch (req->req.type) {
542 case RAW1394_REQ_LIST_CARDS:
543 spin_lock_irqsave(&host_info_lock, flags);
544 khl = kmalloc(sizeof(*khl) * host_count, GFP_ATOMIC);
547 req->req.misc = host_count;
548 req->data = (quadlet_t *) khl;
550 list_for_each_entry(hi, &host_info_list, list) {
551 khl->nodes = hi->host->node_count;
552 strcpy(khl->name, hi->host->driver->name);
556 spin_unlock_irqrestore(&host_info_lock, flags);
559 req->req.error = RAW1394_ERROR_NONE;
560 req->req.length = min(req->req.length,
562 (struct raw1394_khost_list)
570 case RAW1394_REQ_SET_CARD:
571 spin_lock_irqsave(&host_info_lock, flags);
572 if (req->req.misc >= host_count) {
573 req->req.error = RAW1394_ERROR_INVALID_ARG;
576 list_for_each_entry(hi, &host_info_list, list)
577 if (!req->req.misc--)
579 get_device(&hi->host->device); /* FIXME handle failure case */
580 list_add_tail(&fi->list, &hi->file_info_list);
582 /* prevent unloading of the host's low-level driver */
583 if (!try_module_get(hi->host->driver->owner)) {
584 req->req.error = RAW1394_ERROR_ABORTED;
589 fi->state = connected;
591 req->req.error = RAW1394_ERROR_NONE;
592 req->req.generation = get_hpsb_generation(fi->host);
593 req->req.misc = (fi->host->node_id << 16)
594 | fi->host->node_count;
595 if (fi->protocol_version > 3)
596 req->req.misc |= NODEID_TO_NODE(fi->host->irm_id) << 8;
598 spin_unlock_irqrestore(&host_info_lock, flags);
604 req->req.error = RAW1394_ERROR_STATE_ORDER;
609 queue_complete_req(req);
613 static void handle_fcp_listen(struct file_info *fi, struct pending_request *req)
616 if (fi->fcp_buffer) {
617 req->req.error = RAW1394_ERROR_ALREADY;
619 fi->fcp_buffer = int2ptr(req->req.recvb);
622 if (!fi->fcp_buffer) {
623 req->req.error = RAW1394_ERROR_ALREADY;
625 fi->fcp_buffer = NULL;
630 queue_complete_req(req);
633 static int handle_async_request(struct file_info *fi,
634 struct pending_request *req, int node)
637 struct hpsb_packet *packet = NULL;
638 u64 addr = req->req.address & 0xffffffffffffULL;
640 switch (req->req.type) {
641 case RAW1394_REQ_ASYNC_READ:
642 DBGMSG("read_request called");
644 hpsb_make_readpacket(fi->host, node, addr, req->req.length);
649 if (req->req.length == 4)
650 req->data = &packet->header[3];
652 req->data = packet->data;
656 case RAW1394_REQ_ASYNC_WRITE:
657 DBGMSG("write_request called");
659 packet = hpsb_make_writepacket(fi->host, node, addr, NULL,
664 if (req->req.length == 4) {
666 (&packet->header[3], int2ptr(req->req.sendb),
668 req->req.error = RAW1394_ERROR_MEMFAULT;
671 (packet->data, int2ptr(req->req.sendb),
673 req->req.error = RAW1394_ERROR_MEMFAULT;
679 case RAW1394_REQ_ASYNC_STREAM:
680 DBGMSG("stream_request called");
683 hpsb_make_streampacket(fi->host, NULL, req->req.length,
684 node & 0x3f /*channel */ ,
685 (req->req.misc >> 16) & 0x3,
686 req->req.misc & 0xf);
690 if (copy_from_user(packet->data, int2ptr(req->req.sendb),
692 req->req.error = RAW1394_ERROR_MEMFAULT;
697 case RAW1394_REQ_LOCK:
698 DBGMSG("lock_request called");
699 if ((req->req.misc == EXTCODE_FETCH_ADD)
700 || (req->req.misc == EXTCODE_LITTLE_ADD)) {
701 if (req->req.length != 4) {
702 req->req.error = RAW1394_ERROR_INVALID_ARG;
706 if (req->req.length != 8) {
707 req->req.error = RAW1394_ERROR_INVALID_ARG;
712 packet = hpsb_make_lockpacket(fi->host, node, addr,
713 req->req.misc, NULL, 0);
717 if (copy_from_user(packet->data, int2ptr(req->req.sendb),
719 req->req.error = RAW1394_ERROR_MEMFAULT;
723 req->data = packet->data;
727 case RAW1394_REQ_LOCK64:
728 DBGMSG("lock64_request called");
729 if ((req->req.misc == EXTCODE_FETCH_ADD)
730 || (req->req.misc == EXTCODE_LITTLE_ADD)) {
731 if (req->req.length != 8) {
732 req->req.error = RAW1394_ERROR_INVALID_ARG;
736 if (req->req.length != 16) {
737 req->req.error = RAW1394_ERROR_INVALID_ARG;
741 packet = hpsb_make_lock64packet(fi->host, node, addr,
742 req->req.misc, NULL, 0);
746 if (copy_from_user(packet->data, int2ptr(req->req.sendb),
748 req->req.error = RAW1394_ERROR_MEMFAULT;
752 req->data = packet->data;
757 req->req.error = RAW1394_ERROR_STATE_ORDER;
760 req->packet = packet;
762 if (req->req.error) {
764 queue_complete_req(req);
768 hpsb_set_packet_complete_task(packet,
769 (void (*)(void *))queue_complete_cb, req);
771 spin_lock_irqsave(&fi->reqlists_lock, flags);
772 list_add_tail(&req->list, &fi->req_pending);
773 spin_unlock_irqrestore(&fi->reqlists_lock, flags);
775 packet->generation = req->req.generation;
777 if (hpsb_send_packet(packet) < 0) {
778 req->req.error = RAW1394_ERROR_SEND_ERROR;
780 hpsb_free_tlabel(packet);
781 queue_complete_req(req);
786 static int handle_async_send(struct file_info *fi, struct pending_request *req)
789 struct hpsb_packet *packet;
790 int header_length = req->req.misc & 0xffff;
791 int expect_response = req->req.misc >> 16;
794 if (header_length > req->req.length || header_length < 12 ||
795 header_length > FIELD_SIZEOF(struct hpsb_packet, header)) {
796 req->req.error = RAW1394_ERROR_INVALID_ARG;
798 queue_complete_req(req);
802 data_size = req->req.length - header_length;
803 packet = hpsb_alloc_packet(data_size);
804 req->packet = packet;
808 if (copy_from_user(packet->header, int2ptr(req->req.sendb),
810 req->req.error = RAW1394_ERROR_MEMFAULT;
812 queue_complete_req(req);
817 (packet->data, int2ptr(req->req.sendb) + header_length,
819 req->req.error = RAW1394_ERROR_MEMFAULT;
821 queue_complete_req(req);
825 packet->type = hpsb_async;
826 packet->node_id = packet->header[0] >> 16;
827 packet->tcode = (packet->header[0] >> 4) & 0xf;
828 packet->tlabel = (packet->header[0] >> 10) & 0x3f;
829 packet->host = fi->host;
830 packet->expect_response = expect_response;
831 packet->header_size = header_length;
832 packet->data_size = data_size;
835 hpsb_set_packet_complete_task(packet,
836 (void (*)(void *))queue_complete_cb, req);
838 spin_lock_irqsave(&fi->reqlists_lock, flags);
839 list_add_tail(&req->list, &fi->req_pending);
840 spin_unlock_irqrestore(&fi->reqlists_lock, flags);
842 /* Update the generation of the packet just before sending. */
843 packet->generation = req->req.generation;
845 if (hpsb_send_packet(packet) < 0) {
846 req->req.error = RAW1394_ERROR_SEND_ERROR;
847 queue_complete_req(req);
853 static int arm_read(struct hpsb_host *host, int nodeid, quadlet_t * buffer,
854 u64 addr, size_t length, u16 flags)
856 unsigned long irqflags;
857 struct pending_request *req;
858 struct host_info *hi;
859 struct file_info *fi = NULL;
860 struct list_head *entry;
861 struct arm_addr *arm_addr = NULL;
862 struct arm_request *arm_req = NULL;
863 struct arm_response *arm_resp = NULL;
864 int found = 0, size = 0, rcode = -1;
865 struct arm_request_response *arm_req_resp = NULL;
867 DBGMSG("arm_read called by node: %X "
868 "addr: %4.4x %8.8x length: %Zu", nodeid,
869 (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF),
871 spin_lock_irqsave(&host_info_lock, irqflags);
872 hi = find_host_info(host); /* search address-entry */
874 list_for_each_entry(fi, &hi->file_info_list, list) {
875 entry = fi->addr_list.next;
876 while (entry != &(fi->addr_list)) {
878 list_entry(entry, struct arm_addr,
880 if (((arm_addr->start) <= (addr))
881 && ((arm_addr->end) >= (addr + length))) {
894 printk(KERN_ERR "raw1394: arm_read FAILED addr_entry not found"
895 " -> rcode_address_error\n");
896 spin_unlock_irqrestore(&host_info_lock, irqflags);
897 return (RCODE_ADDRESS_ERROR);
899 DBGMSG("arm_read addr_entry FOUND");
901 if (arm_addr->rec_length < length) {
902 DBGMSG("arm_read blocklength too big -> rcode_data_error");
903 rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */
906 if (arm_addr->access_rights & ARM_READ) {
907 if (!(arm_addr->client_transactions & ARM_READ)) {
909 (arm_addr->addr_space_buffer) + (addr -
913 DBGMSG("arm_read -> (rcode_complete)");
914 rcode = RCODE_COMPLETE;
917 rcode = RCODE_TYPE_ERROR; /* function not allowed */
918 DBGMSG("arm_read -> rcode_type_error (access denied)");
921 if (arm_addr->notification_options & ARM_READ) {
922 DBGMSG("arm_read -> entering notification-section");
923 req = __alloc_pending_request(GFP_ATOMIC);
925 DBGMSG("arm_read -> rcode_conflict_error");
926 spin_unlock_irqrestore(&host_info_lock, irqflags);
927 return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
928 The request may be retried */
930 if (rcode == RCODE_COMPLETE) {
932 sizeof(struct arm_request) +
933 sizeof(struct arm_response) +
934 length * sizeof(byte_t) +
935 sizeof(struct arm_request_response);
938 sizeof(struct arm_request) +
939 sizeof(struct arm_response) +
940 sizeof(struct arm_request_response);
942 req->data = kmalloc(size, GFP_ATOMIC);
944 free_pending_request(req);
945 DBGMSG("arm_read -> rcode_conflict_error");
946 spin_unlock_irqrestore(&host_info_lock, irqflags);
947 return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
948 The request may be retried */
952 req->req.type = RAW1394_REQ_ARM;
953 req->req.generation = get_hpsb_generation(host);
955 (((length << 16) & (0xFFFF0000)) | (ARM_READ & 0xFF));
956 req->req.tag = arm_addr->arm_tag;
957 req->req.recvb = arm_addr->recvb;
958 req->req.length = size;
959 arm_req_resp = (struct arm_request_response *)(req->data);
960 arm_req = (struct arm_request *)((byte_t *) (req->data) +
963 arm_request_response)));
965 (struct arm_response *)((byte_t *) (arm_req) +
966 (sizeof(struct arm_request)));
967 arm_req->buffer = NULL;
968 arm_resp->buffer = NULL;
969 if (rcode == RCODE_COMPLETE) {
971 (byte_t *) arm_resp + sizeof(struct arm_response);
973 (arm_addr->addr_space_buffer) + (addr -
978 int2ptr((arm_addr->recvb) +
979 sizeof(struct arm_request_response) +
980 sizeof(struct arm_request) +
981 sizeof(struct arm_response));
983 arm_resp->buffer_length =
984 (rcode == RCODE_COMPLETE) ? length : 0;
985 arm_resp->response_code = rcode;
986 arm_req->buffer_length = 0;
987 arm_req->generation = req->req.generation;
988 arm_req->extended_transaction_code = 0;
989 arm_req->destination_offset = addr;
990 arm_req->source_nodeid = nodeid;
991 arm_req->destination_nodeid = host->node_id;
992 arm_req->tlabel = (flags >> 10) & 0x3f;
993 arm_req->tcode = (flags >> 4) & 0x0f;
994 arm_req_resp->request = int2ptr((arm_addr->recvb) +
996 arm_request_response));
997 arm_req_resp->response =
998 int2ptr((arm_addr->recvb) +
999 sizeof(struct arm_request_response) +
1000 sizeof(struct arm_request));
1001 queue_complete_req(req);
1003 spin_unlock_irqrestore(&host_info_lock, irqflags);
1007 static int arm_write(struct hpsb_host *host, int nodeid, int destid,
1008 quadlet_t * data, u64 addr, size_t length, u16 flags)
1010 unsigned long irqflags;
1011 struct pending_request *req;
1012 struct host_info *hi;
1013 struct file_info *fi = NULL;
1014 struct list_head *entry;
1015 struct arm_addr *arm_addr = NULL;
1016 struct arm_request *arm_req = NULL;
1017 struct arm_response *arm_resp = NULL;
1018 int found = 0, size = 0, rcode = -1, length_conflict = 0;
1019 struct arm_request_response *arm_req_resp = NULL;
1021 DBGMSG("arm_write called by node: %X "
1022 "addr: %4.4x %8.8x length: %Zu", nodeid,
1023 (u16) ((addr >> 32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF),
1025 spin_lock_irqsave(&host_info_lock, irqflags);
1026 hi = find_host_info(host); /* search address-entry */
1028 list_for_each_entry(fi, &hi->file_info_list, list) {
1029 entry = fi->addr_list.next;
1030 while (entry != &(fi->addr_list)) {
1032 list_entry(entry, struct arm_addr,
1034 if (((arm_addr->start) <= (addr))
1035 && ((arm_addr->end) >= (addr + length))) {
1039 entry = entry->next;
1048 printk(KERN_ERR "raw1394: arm_write FAILED addr_entry not found"
1049 " -> rcode_address_error\n");
1050 spin_unlock_irqrestore(&host_info_lock, irqflags);
1051 return (RCODE_ADDRESS_ERROR);
1053 DBGMSG("arm_write addr_entry FOUND");
1055 if (arm_addr->rec_length < length) {
1056 DBGMSG("arm_write blocklength too big -> rcode_data_error");
1057 length_conflict = 1;
1058 rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */
1061 if (arm_addr->access_rights & ARM_WRITE) {
1062 if (!(arm_addr->client_transactions & ARM_WRITE)) {
1063 memcpy((arm_addr->addr_space_buffer) +
1064 (addr - (arm_addr->start)), data,
1066 DBGMSG("arm_write -> (rcode_complete)");
1067 rcode = RCODE_COMPLETE;
1070 rcode = RCODE_TYPE_ERROR; /* function not allowed */
1071 DBGMSG("arm_write -> rcode_type_error (access denied)");
1074 if (arm_addr->notification_options & ARM_WRITE) {
1075 DBGMSG("arm_write -> entering notification-section");
1076 req = __alloc_pending_request(GFP_ATOMIC);
1078 DBGMSG("arm_write -> rcode_conflict_error");
1079 spin_unlock_irqrestore(&host_info_lock, irqflags);
1080 return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
1081 The request my be retried */
1084 sizeof(struct arm_request) + sizeof(struct arm_response) +
1085 (length) * sizeof(byte_t) +
1086 sizeof(struct arm_request_response);
1087 req->data = kmalloc(size, GFP_ATOMIC);
1089 free_pending_request(req);
1090 DBGMSG("arm_write -> rcode_conflict_error");
1091 spin_unlock_irqrestore(&host_info_lock, irqflags);
1092 return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
1093 The request may be retried */
1096 req->file_info = fi;
1097 req->req.type = RAW1394_REQ_ARM;
1098 req->req.generation = get_hpsb_generation(host);
1100 (((length << 16) & (0xFFFF0000)) | (ARM_WRITE & 0xFF));
1101 req->req.tag = arm_addr->arm_tag;
1102 req->req.recvb = arm_addr->recvb;
1103 req->req.length = size;
1104 arm_req_resp = (struct arm_request_response *)(req->data);
1105 arm_req = (struct arm_request *)((byte_t *) (req->data) +
1108 arm_request_response)));
1110 (struct arm_response *)((byte_t *) (arm_req) +
1111 (sizeof(struct arm_request)));
1112 arm_resp->buffer = NULL;
1113 memcpy((byte_t *) arm_resp + sizeof(struct arm_response),
1115 arm_req->buffer = int2ptr((arm_addr->recvb) +
1116 sizeof(struct arm_request_response) +
1117 sizeof(struct arm_request) +
1118 sizeof(struct arm_response));
1119 arm_req->buffer_length = length;
1120 arm_req->generation = req->req.generation;
1121 arm_req->extended_transaction_code = 0;
1122 arm_req->destination_offset = addr;
1123 arm_req->source_nodeid = nodeid;
1124 arm_req->destination_nodeid = destid;
1125 arm_req->tlabel = (flags >> 10) & 0x3f;
1126 arm_req->tcode = (flags >> 4) & 0x0f;
1127 arm_resp->buffer_length = 0;
1128 arm_resp->response_code = rcode;
1129 arm_req_resp->request = int2ptr((arm_addr->recvb) +
1131 arm_request_response));
1132 arm_req_resp->response =
1133 int2ptr((arm_addr->recvb) +
1134 sizeof(struct arm_request_response) +
1135 sizeof(struct arm_request));
1136 queue_complete_req(req);
1138 spin_unlock_irqrestore(&host_info_lock, irqflags);
1142 static int arm_lock(struct hpsb_host *host, int nodeid, quadlet_t * store,
1143 u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode,
1146 unsigned long irqflags;
1147 struct pending_request *req;
1148 struct host_info *hi;
1149 struct file_info *fi = NULL;
1150 struct list_head *entry;
1151 struct arm_addr *arm_addr = NULL;
1152 struct arm_request *arm_req = NULL;
1153 struct arm_response *arm_resp = NULL;
1154 int found = 0, size = 0, rcode = -1;
1156 struct arm_request_response *arm_req_resp = NULL;
1158 if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) ||
1159 ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) {
1160 DBGMSG("arm_lock called by node: %X "
1161 "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X",
1162 nodeid, (u16) ((addr >> 32) & 0xFFFF),
1163 (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF,
1166 DBGMSG("arm_lock called by node: %X "
1167 "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X arg: %8.8X",
1168 nodeid, (u16) ((addr >> 32) & 0xFFFF),
1169 (u32) (addr & 0xFFFFFFFF), ext_tcode & 0xFF,
1170 be32_to_cpu(data), be32_to_cpu(arg));
1172 spin_lock_irqsave(&host_info_lock, irqflags);
1173 hi = find_host_info(host); /* search address-entry */
1175 list_for_each_entry(fi, &hi->file_info_list, list) {
1176 entry = fi->addr_list.next;
1177 while (entry != &(fi->addr_list)) {
1179 list_entry(entry, struct arm_addr,
1181 if (((arm_addr->start) <= (addr))
1182 && ((arm_addr->end) >=
1183 (addr + sizeof(*store)))) {
1187 entry = entry->next;
1196 printk(KERN_ERR "raw1394: arm_lock FAILED addr_entry not found"
1197 " -> rcode_address_error\n");
1198 spin_unlock_irqrestore(&host_info_lock, irqflags);
1199 return (RCODE_ADDRESS_ERROR);
1201 DBGMSG("arm_lock addr_entry FOUND");
1204 if (arm_addr->access_rights & ARM_LOCK) {
1205 if (!(arm_addr->client_transactions & ARM_LOCK)) {
1207 (arm_addr->addr_space_buffer) + (addr -
1211 switch (ext_tcode) {
1212 case (EXTCODE_MASK_SWAP):
1213 new = data | (old & ~arg);
1215 case (EXTCODE_COMPARE_SWAP):
1222 case (EXTCODE_FETCH_ADD):
1224 cpu_to_be32(be32_to_cpu(data) +
1227 case (EXTCODE_LITTLE_ADD):
1229 cpu_to_le32(le32_to_cpu(data) +
1232 case (EXTCODE_BOUNDED_ADD):
1235 cpu_to_be32(be32_to_cpu
1243 case (EXTCODE_WRAP_ADD):
1246 cpu_to_be32(be32_to_cpu
1255 rcode = RCODE_TYPE_ERROR; /* function not allowed */
1257 "raw1394: arm_lock FAILED "
1258 "ext_tcode not allowed -> rcode_type_error\n");
1262 DBGMSG("arm_lock -> (rcode_complete)");
1263 rcode = RCODE_COMPLETE;
1264 memcpy(store, &old, sizeof(*store));
1265 memcpy((arm_addr->addr_space_buffer) +
1266 (addr - (arm_addr->start)),
1267 &new, sizeof(*store));
1271 rcode = RCODE_TYPE_ERROR; /* function not allowed */
1272 DBGMSG("arm_lock -> rcode_type_error (access denied)");
1275 if (arm_addr->notification_options & ARM_LOCK) {
1276 byte_t *buf1, *buf2;
1277 DBGMSG("arm_lock -> entering notification-section");
1278 req = __alloc_pending_request(GFP_ATOMIC);
1280 DBGMSG("arm_lock -> rcode_conflict_error");
1281 spin_unlock_irqrestore(&host_info_lock, irqflags);
1282 return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
1283 The request may be retried */
1285 size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */
1286 req->data = kmalloc(size, GFP_ATOMIC);
1288 free_pending_request(req);
1289 DBGMSG("arm_lock -> rcode_conflict_error");
1290 spin_unlock_irqrestore(&host_info_lock, irqflags);
1291 return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
1292 The request may be retried */
1295 arm_req_resp = (struct arm_request_response *)(req->data);
1296 arm_req = (struct arm_request *)((byte_t *) (req->data) +
1299 arm_request_response)));
1301 (struct arm_response *)((byte_t *) (arm_req) +
1302 (sizeof(struct arm_request)));
1303 buf1 = (byte_t *) arm_resp + sizeof(struct arm_response);
1304 buf2 = buf1 + 2 * sizeof(*store);
1305 if ((ext_tcode == EXTCODE_FETCH_ADD) ||
1306 (ext_tcode == EXTCODE_LITTLE_ADD)) {
1307 arm_req->buffer_length = sizeof(*store);
1308 memcpy(buf1, &data, sizeof(*store));
1311 arm_req->buffer_length = 2 * sizeof(*store);
1312 memcpy(buf1, &arg, sizeof(*store));
1313 memcpy(buf1 + sizeof(*store), &data, sizeof(*store));
1315 if (rcode == RCODE_COMPLETE) {
1316 arm_resp->buffer_length = sizeof(*store);
1317 memcpy(buf2, &old, sizeof(*store));
1319 arm_resp->buffer_length = 0;
1321 req->file_info = fi;
1322 req->req.type = RAW1394_REQ_ARM;
1323 req->req.generation = get_hpsb_generation(host);
1324 req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) |
1326 req->req.tag = arm_addr->arm_tag;
1327 req->req.recvb = arm_addr->recvb;
1328 req->req.length = size;
1329 arm_req->generation = req->req.generation;
1330 arm_req->extended_transaction_code = ext_tcode;
1331 arm_req->destination_offset = addr;
1332 arm_req->source_nodeid = nodeid;
1333 arm_req->destination_nodeid = host->node_id;
1334 arm_req->tlabel = (flags >> 10) & 0x3f;
1335 arm_req->tcode = (flags >> 4) & 0x0f;
1336 arm_resp->response_code = rcode;
1337 arm_req_resp->request = int2ptr((arm_addr->recvb) +
1339 arm_request_response));
1340 arm_req_resp->response =
1341 int2ptr((arm_addr->recvb) +
1342 sizeof(struct arm_request_response) +
1343 sizeof(struct arm_request));
1345 int2ptr((arm_addr->recvb) +
1346 sizeof(struct arm_request_response) +
1347 sizeof(struct arm_request) +
1348 sizeof(struct arm_response));
1350 int2ptr((arm_addr->recvb) +
1351 sizeof(struct arm_request_response) +
1352 sizeof(struct arm_request) +
1353 sizeof(struct arm_response) + 2 * sizeof(*store));
1354 queue_complete_req(req);
1356 spin_unlock_irqrestore(&host_info_lock, irqflags);
1360 static int arm_lock64(struct hpsb_host *host, int nodeid, octlet_t * store,
1361 u64 addr, octlet_t data, octlet_t arg, int ext_tcode,
1364 unsigned long irqflags;
1365 struct pending_request *req;
1366 struct host_info *hi;
1367 struct file_info *fi = NULL;
1368 struct list_head *entry;
1369 struct arm_addr *arm_addr = NULL;
1370 struct arm_request *arm_req = NULL;
1371 struct arm_response *arm_resp = NULL;
1372 int found = 0, size = 0, rcode = -1;
1374 struct arm_request_response *arm_req_resp = NULL;
1376 if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) ||
1377 ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) {
1378 DBGMSG("arm_lock64 called by node: %X "
1379 "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X ",
1380 nodeid, (u16) ((addr >> 32) & 0xFFFF),
1381 (u32) (addr & 0xFFFFFFFF),
1383 (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF),
1384 (u32) (be64_to_cpu(data) & 0xFFFFFFFF));
1386 DBGMSG("arm_lock64 called by node: %X "
1387 "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X arg: "
1389 nodeid, (u16) ((addr >> 32) & 0xFFFF),
1390 (u32) (addr & 0xFFFFFFFF),
1392 (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF),
1393 (u32) (be64_to_cpu(data) & 0xFFFFFFFF),
1394 (u32) ((be64_to_cpu(arg) >> 32) & 0xFFFFFFFF),
1395 (u32) (be64_to_cpu(arg) & 0xFFFFFFFF));
1397 spin_lock_irqsave(&host_info_lock, irqflags);
1398 hi = find_host_info(host); /* search addressentry in file_info's for host */
1400 list_for_each_entry(fi, &hi->file_info_list, list) {
1401 entry = fi->addr_list.next;
1402 while (entry != &(fi->addr_list)) {
1404 list_entry(entry, struct arm_addr,
1406 if (((arm_addr->start) <= (addr))
1407 && ((arm_addr->end) >=
1408 (addr + sizeof(*store)))) {
1412 entry = entry->next;
1422 "raw1394: arm_lock64 FAILED addr_entry not found"
1423 " -> rcode_address_error\n");
1424 spin_unlock_irqrestore(&host_info_lock, irqflags);
1425 return (RCODE_ADDRESS_ERROR);
1427 DBGMSG("arm_lock64 addr_entry FOUND");
1430 if (arm_addr->access_rights & ARM_LOCK) {
1431 if (!(arm_addr->client_transactions & ARM_LOCK)) {
1433 (arm_addr->addr_space_buffer) + (addr -
1437 switch (ext_tcode) {
1438 case (EXTCODE_MASK_SWAP):
1439 new = data | (old & ~arg);
1441 case (EXTCODE_COMPARE_SWAP):
1448 case (EXTCODE_FETCH_ADD):
1450 cpu_to_be64(be64_to_cpu(data) +
1453 case (EXTCODE_LITTLE_ADD):
1455 cpu_to_le64(le64_to_cpu(data) +
1458 case (EXTCODE_BOUNDED_ADD):
1461 cpu_to_be64(be64_to_cpu
1469 case (EXTCODE_WRAP_ADD):
1472 cpu_to_be64(be64_to_cpu
1482 "raw1394: arm_lock64 FAILED "
1483 "ext_tcode not allowed -> rcode_type_error\n");
1484 rcode = RCODE_TYPE_ERROR; /* function not allowed */
1489 ("arm_lock64 -> (rcode_complete)");
1490 rcode = RCODE_COMPLETE;
1491 memcpy(store, &old, sizeof(*store));
1492 memcpy((arm_addr->addr_space_buffer) +
1493 (addr - (arm_addr->start)),
1494 &new, sizeof(*store));
1498 rcode = RCODE_TYPE_ERROR; /* function not allowed */
1500 ("arm_lock64 -> rcode_type_error (access denied)");
1503 if (arm_addr->notification_options & ARM_LOCK) {
1504 byte_t *buf1, *buf2;
1505 DBGMSG("arm_lock64 -> entering notification-section");
1506 req = __alloc_pending_request(GFP_ATOMIC);
1508 spin_unlock_irqrestore(&host_info_lock, irqflags);
1509 DBGMSG("arm_lock64 -> rcode_conflict_error");
1510 return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
1511 The request may be retried */
1513 size = sizeof(struct arm_request) + sizeof(struct arm_response) + 3 * sizeof(*store) + sizeof(struct arm_request_response); /* maximum */
1514 req->data = kmalloc(size, GFP_ATOMIC);
1516 free_pending_request(req);
1517 spin_unlock_irqrestore(&host_info_lock, irqflags);
1518 DBGMSG("arm_lock64 -> rcode_conflict_error");
1519 return (RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
1520 The request may be retried */
1523 arm_req_resp = (struct arm_request_response *)(req->data);
1524 arm_req = (struct arm_request *)((byte_t *) (req->data) +
1527 arm_request_response)));
1529 (struct arm_response *)((byte_t *) (arm_req) +
1530 (sizeof(struct arm_request)));
1531 buf1 = (byte_t *) arm_resp + sizeof(struct arm_response);
1532 buf2 = buf1 + 2 * sizeof(*store);
1533 if ((ext_tcode == EXTCODE_FETCH_ADD) ||
1534 (ext_tcode == EXTCODE_LITTLE_ADD)) {
1535 arm_req->buffer_length = sizeof(*store);
1536 memcpy(buf1, &data, sizeof(*store));
1539 arm_req->buffer_length = 2 * sizeof(*store);
1540 memcpy(buf1, &arg, sizeof(*store));
1541 memcpy(buf1 + sizeof(*store), &data, sizeof(*store));
1543 if (rcode == RCODE_COMPLETE) {
1544 arm_resp->buffer_length = sizeof(*store);
1545 memcpy(buf2, &old, sizeof(*store));
1547 arm_resp->buffer_length = 0;
1549 req->file_info = fi;
1550 req->req.type = RAW1394_REQ_ARM;
1551 req->req.generation = get_hpsb_generation(host);
1552 req->req.misc = ((((sizeof(*store)) << 16) & (0xFFFF0000)) |
1554 req->req.tag = arm_addr->arm_tag;
1555 req->req.recvb = arm_addr->recvb;
1556 req->req.length = size;
1557 arm_req->generation = req->req.generation;
1558 arm_req->extended_transaction_code = ext_tcode;
1559 arm_req->destination_offset = addr;
1560 arm_req->source_nodeid = nodeid;
1561 arm_req->destination_nodeid = host->node_id;
1562 arm_req->tlabel = (flags >> 10) & 0x3f;
1563 arm_req->tcode = (flags >> 4) & 0x0f;
1564 arm_resp->response_code = rcode;
1565 arm_req_resp->request = int2ptr((arm_addr->recvb) +
1567 arm_request_response));
1568 arm_req_resp->response =
1569 int2ptr((arm_addr->recvb) +
1570 sizeof(struct arm_request_response) +
1571 sizeof(struct arm_request));
1573 int2ptr((arm_addr->recvb) +
1574 sizeof(struct arm_request_response) +
1575 sizeof(struct arm_request) +
1576 sizeof(struct arm_response));
1578 int2ptr((arm_addr->recvb) +
1579 sizeof(struct arm_request_response) +
1580 sizeof(struct arm_request) +
1581 sizeof(struct arm_response) + 2 * sizeof(*store));
1582 queue_complete_req(req);
1584 spin_unlock_irqrestore(&host_info_lock, irqflags);
1588 static int arm_register(struct file_info *fi, struct pending_request *req)
1591 struct arm_addr *addr;
1592 struct host_info *hi;
1593 struct file_info *fi_hlp = NULL;
1594 struct list_head *entry;
1595 struct arm_addr *arm_addr = NULL;
1596 int same_host, another_host;
1597 unsigned long flags;
1599 DBGMSG("arm_register called "
1600 "addr(Offset): %8.8x %8.8x length: %u "
1601 "rights: %2.2X notify: %2.2X "
1602 "max_blk_len: %4.4X",
1603 (u32) ((req->req.address >> 32) & 0xFFFF),
1604 (u32) (req->req.address & 0xFFFFFFFF),
1605 req->req.length, ((req->req.misc >> 8) & 0xFF),
1606 (req->req.misc & 0xFF), ((req->req.misc >> 16) & 0xFFFF));
1607 /* check addressrange */
1608 if ((((req->req.address) & ~(0xFFFFFFFFFFFFULL)) != 0) ||
1609 (((req->req.address + req->req.length) & ~(0xFFFFFFFFFFFFULL)) !=
1611 req->req.length = 0;
1614 /* addr-list-entry for fileinfo */
1615 addr = kmalloc(sizeof(*addr), GFP_KERNEL);
1617 req->req.length = 0;
1620 /* allocation of addr_space_buffer */
1621 addr->addr_space_buffer = vmalloc(req->req.length);
1622 if (!(addr->addr_space_buffer)) {
1624 req->req.length = 0;
1627 /* initialization of addr_space_buffer */
1628 if ((req->req.sendb) == (unsigned long)NULL) {
1630 memset(addr->addr_space_buffer, 0, req->req.length);
1632 /* init: user -> kernel */
1634 (addr->addr_space_buffer, int2ptr(req->req.sendb),
1636 vfree(addr->addr_space_buffer);
1641 INIT_LIST_HEAD(&addr->addr_list);
1642 addr->arm_tag = req->req.tag;
1643 addr->start = req->req.address;
1644 addr->end = req->req.address + req->req.length;
1645 addr->access_rights = (u8) (req->req.misc & 0x0F);
1646 addr->notification_options = (u8) ((req->req.misc >> 4) & 0x0F);
1647 addr->client_transactions = (u8) ((req->req.misc >> 8) & 0x0F);
1648 addr->access_rights |= addr->client_transactions;
1649 addr->notification_options |= addr->client_transactions;
1650 addr->recvb = req->req.recvb;
1651 addr->rec_length = (u16) ((req->req.misc >> 16) & 0xFFFF);
1653 spin_lock_irqsave(&host_info_lock, flags);
1654 hi = find_host_info(fi->host);
1657 /* same host with address-entry containing same addressrange ? */
1658 list_for_each_entry(fi_hlp, &hi->file_info_list, list) {
1659 entry = fi_hlp->addr_list.next;
1660 while (entry != &(fi_hlp->addr_list)) {
1662 list_entry(entry, struct arm_addr, addr_list);
1663 if ((arm_addr->start == addr->start)
1664 && (arm_addr->end == addr->end)) {
1665 DBGMSG("same host ownes same "
1666 "addressrange -> EALREADY");
1670 entry = entry->next;
1677 /* addressrange occupied by same host */
1678 spin_unlock_irqrestore(&host_info_lock, flags);
1679 vfree(addr->addr_space_buffer);
1683 /* another host with valid address-entry containing same addressrange */
1684 list_for_each_entry(hi, &host_info_list, list) {
1685 if (hi->host != fi->host) {
1686 list_for_each_entry(fi_hlp, &hi->file_info_list, list) {
1687 entry = fi_hlp->addr_list.next;
1688 while (entry != &(fi_hlp->addr_list)) {
1690 list_entry(entry, struct arm_addr,
1692 if ((arm_addr->start == addr->start)
1693 && (arm_addr->end == addr->end)) {
1695 ("another host ownes same "
1700 entry = entry->next;
1708 spin_unlock_irqrestore(&host_info_lock, flags);
1711 DBGMSG("another hosts entry is valid -> SUCCESS");
1712 if (copy_to_user(int2ptr(req->req.recvb),
1713 &addr->start, sizeof(u64))) {
1714 printk(KERN_ERR "raw1394: arm_register failed "
1715 " address-range-entry is invalid -> EFAULT !!!\n");
1716 vfree(addr->addr_space_buffer);
1720 free_pending_request(req); /* immediate success or fail */
1722 spin_lock_irqsave(&host_info_lock, flags);
1723 list_add_tail(&addr->addr_list, &fi->addr_list);
1724 spin_unlock_irqrestore(&host_info_lock, flags);
1728 hpsb_register_addrspace(&raw1394_highlevel, fi->host, &arm_ops,
1730 req->req.address + req->req.length);
1733 spin_lock_irqsave(&host_info_lock, flags);
1734 list_add_tail(&addr->addr_list, &fi->addr_list);
1735 spin_unlock_irqrestore(&host_info_lock, flags);
1737 DBGMSG("arm_register failed errno: %d \n", retval);
1738 vfree(addr->addr_space_buffer);
1742 free_pending_request(req); /* immediate success or fail */
1746 static int arm_unregister(struct file_info *fi, struct pending_request *req)
1750 struct list_head *entry;
1751 struct arm_addr *addr = NULL;
1752 struct host_info *hi;
1753 struct file_info *fi_hlp = NULL;
1754 struct arm_addr *arm_addr = NULL;
1756 unsigned long flags;
1758 DBGMSG("arm_Unregister called addr(Offset): "
1760 (u32) ((req->req.address >> 32) & 0xFFFF),
1761 (u32) (req->req.address & 0xFFFFFFFF));
1762 spin_lock_irqsave(&host_info_lock, flags);
1764 entry = fi->addr_list.next;
1765 while (entry != &(fi->addr_list)) {
1766 addr = list_entry(entry, struct arm_addr, addr_list);
1767 if (addr->start == req->req.address) {
1771 entry = entry->next;
1774 DBGMSG("arm_Unregister addr not found");
1775 spin_unlock_irqrestore(&host_info_lock, flags);
1778 DBGMSG("arm_Unregister addr found");
1780 /* another host with valid address-entry containing
1781 same addressrange */
1782 list_for_each_entry(hi, &host_info_list, list) {
1783 if (hi->host != fi->host) {
1784 list_for_each_entry(fi_hlp, &hi->file_info_list, list) {
1785 entry = fi_hlp->addr_list.next;
1786 while (entry != &(fi_hlp->addr_list)) {
1787 arm_addr = list_entry(entry,
1790 if (arm_addr->start == addr->start) {
1791 DBGMSG("another host ownes "
1792 "same addressrange");
1796 entry = entry->next;
1805 DBGMSG("delete entry from list -> success");
1806 list_del(&addr->addr_list);
1807 spin_unlock_irqrestore(&host_info_lock, flags);
1808 vfree(addr->addr_space_buffer);
1810 free_pending_request(req); /* immediate success or fail */
1814 hpsb_unregister_addrspace(&raw1394_highlevel, fi->host,
1817 printk(KERN_ERR "raw1394: arm_Unregister failed -> EINVAL\n");
1818 spin_unlock_irqrestore(&host_info_lock, flags);
1821 DBGMSG("delete entry from list -> success");
1822 list_del(&addr->addr_list);
1823 spin_unlock_irqrestore(&host_info_lock, flags);
1824 vfree(addr->addr_space_buffer);
1826 free_pending_request(req); /* immediate success or fail */
1830 /* Copy data from ARM buffer(s) to user buffer. */
1831 static int arm_get_buf(struct file_info *fi, struct pending_request *req)
1833 struct arm_addr *arm_addr = NULL;
1834 unsigned long flags;
1835 unsigned long offset;
1837 struct list_head *entry;
1839 DBGMSG("arm_get_buf "
1840 "addr(Offset): %04X %08X length: %u",
1841 (u32) ((req->req.address >> 32) & 0xFFFF),
1842 (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length);
1844 spin_lock_irqsave(&host_info_lock, flags);
1845 entry = fi->addr_list.next;
1846 while (entry != &(fi->addr_list)) {
1847 arm_addr = list_entry(entry, struct arm_addr, addr_list);
1848 if ((arm_addr->start <= req->req.address) &&
1849 (arm_addr->end > req->req.address)) {
1850 if (req->req.address + req->req.length <= arm_addr->end) {
1851 offset = req->req.address - arm_addr->start;
1852 spin_unlock_irqrestore(&host_info_lock, flags);
1855 ("arm_get_buf copy_to_user( %08X, %p, %u )",
1856 (u32) req->req.recvb,
1857 arm_addr->addr_space_buffer + offset,
1858 (u32) req->req.length);
1860 (int2ptr(req->req.recvb),
1861 arm_addr->addr_space_buffer + offset,
1865 /* We have to free the request, because we
1866 * queue no response, and therefore nobody
1868 free_pending_request(req);
1871 DBGMSG("arm_get_buf request exceeded mapping");
1872 spin_unlock_irqrestore(&host_info_lock, flags);
1876 entry = entry->next;
1878 spin_unlock_irqrestore(&host_info_lock, flags);
1882 /* Copy data from user buffer to ARM buffer(s). */
1883 static int arm_set_buf(struct file_info *fi, struct pending_request *req)
1885 struct arm_addr *arm_addr = NULL;
1886 unsigned long flags;
1887 unsigned long offset;
1889 struct list_head *entry;
1891 DBGMSG("arm_set_buf "
1892 "addr(Offset): %04X %08X length: %u",
1893 (u32) ((req->req.address >> 32) & 0xFFFF),
1894 (u32) (req->req.address & 0xFFFFFFFF), (u32) req->req.length);
1896 spin_lock_irqsave(&host_info_lock, flags);
1897 entry = fi->addr_list.next;
1898 while (entry != &(fi->addr_list)) {
1899 arm_addr = list_entry(entry, struct arm_addr, addr_list);
1900 if ((arm_addr->start <= req->req.address) &&
1901 (arm_addr->end > req->req.address)) {
1902 if (req->req.address + req->req.length <= arm_addr->end) {
1903 offset = req->req.address - arm_addr->start;
1904 spin_unlock_irqrestore(&host_info_lock, flags);
1907 ("arm_set_buf copy_from_user( %p, %08X, %u )",
1908 arm_addr->addr_space_buffer + offset,
1909 (u32) req->req.sendb,
1910 (u32) req->req.length);
1912 (arm_addr->addr_space_buffer + offset,
1913 int2ptr(req->req.sendb),
1917 /* We have to free the request, because we
1918 * queue no response, and therefore nobody
1920 free_pending_request(req);
1923 DBGMSG("arm_set_buf request exceeded mapping");
1924 spin_unlock_irqrestore(&host_info_lock, flags);
1928 entry = entry->next;
1930 spin_unlock_irqrestore(&host_info_lock, flags);
1934 static int reset_notification(struct file_info *fi, struct pending_request *req)
1936 DBGMSG("reset_notification called - switch %s ",
1937 (req->req.misc == RAW1394_NOTIFY_OFF) ? "OFF" : "ON");
1938 if ((req->req.misc == RAW1394_NOTIFY_OFF) ||
1939 (req->req.misc == RAW1394_NOTIFY_ON)) {
1940 fi->notification = (u8) req->req.misc;
1941 free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */
1944 /* error EINVAL (22) invalid argument */
1948 static int write_phypacket(struct file_info *fi, struct pending_request *req)
1950 struct hpsb_packet *packet = NULL;
1953 unsigned long flags;
1955 data = be32_to_cpu((u32) req->req.sendb);
1956 DBGMSG("write_phypacket called - quadlet 0x%8.8x ", data);
1957 packet = hpsb_make_phypacket(fi->host, data);
1960 req->req.length = 0;
1961 req->packet = packet;
1962 hpsb_set_packet_complete_task(packet,
1963 (void (*)(void *))queue_complete_cb, req);
1964 spin_lock_irqsave(&fi->reqlists_lock, flags);
1965 list_add_tail(&req->list, &fi->req_pending);
1966 spin_unlock_irqrestore(&fi->reqlists_lock, flags);
1967 packet->generation = req->req.generation;
1968 retval = hpsb_send_packet(packet);
1969 DBGMSG("write_phypacket send_packet called => retval: %d ", retval);
1971 req->req.error = RAW1394_ERROR_SEND_ERROR;
1972 req->req.length = 0;
1973 queue_complete_req(req);
1978 static int get_config_rom(struct file_info *fi, struct pending_request *req)
1981 quadlet_t *data = kmalloc(req->req.length, GFP_KERNEL);
1988 csr1212_read(fi->host->csr.rom, CSR1212_CONFIG_ROM_SPACE_OFFSET,
1989 data, req->req.length);
1990 if (copy_to_user(int2ptr(req->req.recvb), data, req->req.length))
1993 (int2ptr(req->req.tag), &fi->host->csr.rom->cache_head->len,
1994 sizeof(fi->host->csr.rom->cache_head->len)))
1996 if (copy_to_user(int2ptr(req->req.address), &fi->host->csr.generation,
1997 sizeof(fi->host->csr.generation)))
1999 if (copy_to_user(int2ptr(req->req.sendb), &status, sizeof(status)))
2003 free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */
2008 static int update_config_rom(struct file_info *fi, struct pending_request *req)
2011 quadlet_t *data = kmalloc(req->req.length, GFP_KERNEL);
2014 if (copy_from_user(data, int2ptr(req->req.sendb), req->req.length)) {
2017 int status = hpsb_update_config_rom(fi->host,
2018 data, req->req.length,
2019 (unsigned char)req->req.
2022 (int2ptr(req->req.recvb), &status, sizeof(status)))
2027 free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */
2033 static int modify_config_rom(struct file_info *fi, struct pending_request *req)
2035 struct csr1212_keyval *kv;
2036 struct csr1212_csr_rom_cache *cache;
2037 struct csr1212_dentry *dentry;
2041 if (req->req.misc == ~0) {
2042 if (req->req.length == 0)
2045 /* Find an unused slot */
2047 dr < RAW1394_MAX_USER_CSR_DIRS && fi->csr1212_dirs[dr];
2050 if (dr == RAW1394_MAX_USER_CSR_DIRS)
2053 fi->csr1212_dirs[dr] =
2054 csr1212_new_directory(CSR1212_KV_ID_VENDOR);
2055 if (!fi->csr1212_dirs[dr])
2059 if (!fi->csr1212_dirs[dr])
2062 /* Delete old stuff */
2064 fi->csr1212_dirs[dr]->value.directory.dentries_head;
2065 dentry; dentry = dentry->next) {
2066 csr1212_detach_keyval_from_directory(fi->host->csr.rom->
2071 if (req->req.length == 0) {
2072 csr1212_release_keyval(fi->csr1212_dirs[dr]);
2073 fi->csr1212_dirs[dr] = NULL;
2075 hpsb_update_config_rom_image(fi->host);
2076 free_pending_request(req);
2081 cache = csr1212_rom_cache_malloc(0, req->req.length);
2083 csr1212_release_keyval(fi->csr1212_dirs[dr]);
2084 fi->csr1212_dirs[dr] = NULL;
2088 cache->filled_head = kmalloc(sizeof(*cache->filled_head), GFP_KERNEL);
2089 if (!cache->filled_head) {
2090 csr1212_release_keyval(fi->csr1212_dirs[dr]);
2091 fi->csr1212_dirs[dr] = NULL;
2092 CSR1212_FREE(cache);
2095 cache->filled_tail = cache->filled_head;
2097 if (copy_from_user(cache->data, int2ptr(req->req.sendb),
2099 csr1212_release_keyval(fi->csr1212_dirs[dr]);
2100 fi->csr1212_dirs[dr] = NULL;
2103 cache->len = req->req.length;
2104 cache->filled_head->offset_start = 0;
2105 cache->filled_head->offset_end = cache->size - 1;
2107 cache->layout_head = cache->layout_tail = fi->csr1212_dirs[dr];
2109 ret = CSR1212_SUCCESS;
2110 /* parse all the items */
2111 for (kv = cache->layout_head; ret == CSR1212_SUCCESS && kv;
2113 ret = csr1212_parse_keyval(kv, cache);
2116 /* attach top level items to the root directory */
2118 fi->csr1212_dirs[dr]->value.directory.dentries_head;
2119 ret == CSR1212_SUCCESS && dentry; dentry = dentry->next) {
2121 csr1212_attach_keyval_to_directory(fi->host->csr.
2126 if (ret == CSR1212_SUCCESS) {
2127 ret = hpsb_update_config_rom_image(fi->host);
2129 if (ret >= 0 && copy_to_user(int2ptr(req->req.recvb),
2135 kfree(cache->filled_head);
2136 CSR1212_FREE(cache);
2139 /* we have to free the request, because we queue no response,
2140 * and therefore nobody will free it */
2141 free_pending_request(req);
2145 fi->csr1212_dirs[dr]->value.directory.dentries_head;
2146 dentry; dentry = dentry->next) {
2147 csr1212_detach_keyval_from_directory(fi->host->csr.rom->
2151 csr1212_release_keyval(fi->csr1212_dirs[dr]);
2152 fi->csr1212_dirs[dr] = NULL;
2157 static int state_connected(struct file_info *fi, struct pending_request *req)
2159 int node = req->req.address >> 48;
2161 req->req.error = RAW1394_ERROR_NONE;
2163 switch (req->req.type) {
2165 case RAW1394_REQ_ECHO:
2166 queue_complete_req(req);
2169 case RAW1394_REQ_ARM_REGISTER:
2170 return arm_register(fi, req);
2172 case RAW1394_REQ_ARM_UNREGISTER:
2173 return arm_unregister(fi, req);
2175 case RAW1394_REQ_ARM_SET_BUF:
2176 return arm_set_buf(fi, req);
2178 case RAW1394_REQ_ARM_GET_BUF:
2179 return arm_get_buf(fi, req);
2181 case RAW1394_REQ_RESET_NOTIFY:
2182 return reset_notification(fi, req);
2184 case RAW1394_REQ_ISO_SEND:
2185 case RAW1394_REQ_ISO_LISTEN:
2186 printk(KERN_DEBUG "raw1394: old iso ABI has been removed\n");
2187 req->req.error = RAW1394_ERROR_COMPAT;
2188 req->req.misc = RAW1394_KERNELAPI_VERSION;
2189 queue_complete_req(req);
2192 case RAW1394_REQ_FCP_LISTEN:
2193 handle_fcp_listen(fi, req);
2196 case RAW1394_REQ_RESET_BUS:
2197 if (req->req.misc == RAW1394_LONG_RESET) {
2198 DBGMSG("busreset called (type: LONG)");
2199 hpsb_reset_bus(fi->host, LONG_RESET);
2200 free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */
2203 if (req->req.misc == RAW1394_SHORT_RESET) {
2204 DBGMSG("busreset called (type: SHORT)");
2205 hpsb_reset_bus(fi->host, SHORT_RESET);
2206 free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */
2209 /* error EINVAL (22) invalid argument */
2211 case RAW1394_REQ_GET_ROM:
2212 return get_config_rom(fi, req);
2214 case RAW1394_REQ_UPDATE_ROM:
2215 return update_config_rom(fi, req);
2217 case RAW1394_REQ_MODIFY_ROM:
2218 return modify_config_rom(fi, req);
2221 if (req->req.generation != get_hpsb_generation(fi->host)) {
2222 req->req.error = RAW1394_ERROR_GENERATION;
2223 req->req.generation = get_hpsb_generation(fi->host);
2224 req->req.length = 0;
2225 queue_complete_req(req);
2229 switch (req->req.type) {
2230 case RAW1394_REQ_PHYPACKET:
2231 return write_phypacket(fi, req);
2232 case RAW1394_REQ_ASYNC_SEND:
2233 return handle_async_send(fi, req);
2236 if (req->req.length == 0) {
2237 req->req.error = RAW1394_ERROR_INVALID_ARG;
2238 queue_complete_req(req);
2242 return handle_async_request(fi, req, node);
2245 static ssize_t raw1394_write(struct file *file, const char __user * buffer,
2246 size_t count, loff_t * offset_is_ignored)
2248 struct file_info *fi = (struct file_info *)file->private_data;
2249 struct pending_request *req;
2250 ssize_t retval = -EBADFD;
2252 #ifdef CONFIG_COMPAT
2253 if (count == sizeof(struct compat_raw1394_req) &&
2254 sizeof(struct compat_raw1394_req) !=
2255 sizeof(struct raw1394_request)) {
2256 buffer = raw1394_compat_write(buffer);
2257 if (IS_ERR((__force void *)buffer))
2258 return PTR_ERR((__force void *)buffer);
2261 if (count != sizeof(struct raw1394_request)) {
2265 req = alloc_pending_request();
2269 req->file_info = fi;
2271 if (copy_from_user(&req->req, buffer, sizeof(struct raw1394_request))) {
2272 free_pending_request(req);
2276 if (!mutex_trylock(&fi->state_mutex)) {
2277 free_pending_request(req);
2281 switch (fi->state) {
2283 retval = state_opened(fi, req);
2287 retval = state_initialized(fi, req);
2291 retval = state_connected(fi, req);
2295 mutex_unlock(&fi->state_mutex);
2298 free_pending_request(req);
2307 /* rawiso operations */
2309 /* check if any RAW1394_REQ_RAWISO_ACTIVITY event is already in the
2310 * completion queue (reqlists_lock must be taken) */
2311 static inline int __rawiso_event_in_queue(struct file_info *fi)
2313 struct pending_request *req;
2315 list_for_each_entry(req, &fi->req_complete, list)
2316 if (req->req.type == RAW1394_REQ_RAWISO_ACTIVITY)
2322 /* put a RAWISO_ACTIVITY event in the queue, if one isn't there already */
2323 static void queue_rawiso_event(struct file_info *fi)
2325 unsigned long flags;
2327 spin_lock_irqsave(&fi->reqlists_lock, flags);
2329 /* only one ISO activity event may be in the queue */
2330 if (!__rawiso_event_in_queue(fi)) {
2331 struct pending_request *req =
2332 __alloc_pending_request(GFP_ATOMIC);
2335 req->file_info = fi;
2336 req->req.type = RAW1394_REQ_RAWISO_ACTIVITY;
2337 req->req.generation = get_hpsb_generation(fi->host);
2338 __queue_complete_req(req);
2340 /* on allocation failure, signal an overflow */
2341 if (fi->iso_handle) {
2342 atomic_inc(&fi->iso_handle->overflows);
2346 spin_unlock_irqrestore(&fi->reqlists_lock, flags);
2349 static void rawiso_activity_cb(struct hpsb_iso *iso)
2351 unsigned long flags;
2352 struct host_info *hi;
2353 struct file_info *fi;
2355 spin_lock_irqsave(&host_info_lock, flags);
2356 hi = find_host_info(iso->host);
2359 list_for_each_entry(fi, &hi->file_info_list, list) {
2360 if (fi->iso_handle == iso)
2361 queue_rawiso_event(fi);
2365 spin_unlock_irqrestore(&host_info_lock, flags);
2368 /* helper function - gather all the kernel iso status bits for returning to user-space */
2369 static void raw1394_iso_fill_status(struct hpsb_iso *iso,
2370 struct raw1394_iso_status *stat)
2372 int overflows = atomic_read(&iso->overflows);
2373 int skips = atomic_read(&iso->skips);
2375 stat->config.data_buf_size = iso->buf_size;
2376 stat->config.buf_packets = iso->buf_packets;
2377 stat->config.channel = iso->channel;
2378 stat->config.speed = iso->speed;
2379 stat->config.irq_interval = iso->irq_interval;
2380 stat->n_packets = hpsb_iso_n_ready(iso);
2381 stat->overflows = ((skips & 0xFFFF) << 16) | ((overflows & 0xFFFF));
2382 stat->xmit_cycle = iso->xmit_cycle;
2385 static int raw1394_iso_xmit_init(struct file_info *fi, void __user * uaddr)
2387 struct raw1394_iso_status stat;
2392 if (copy_from_user(&stat, uaddr, sizeof(stat)))
2395 fi->iso_handle = hpsb_iso_xmit_init(fi->host,
2396 stat.config.data_buf_size,
2397 stat.config.buf_packets,
2398 stat.config.channel,
2400 stat.config.irq_interval,
2401 rawiso_activity_cb);
2402 if (!fi->iso_handle)
2405 fi->iso_state = RAW1394_ISO_XMIT;
2407 raw1394_iso_fill_status(fi->iso_handle, &stat);
2408 if (copy_to_user(uaddr, &stat, sizeof(stat)))
2411 /* queue an event to get things started */
2412 rawiso_activity_cb(fi->iso_handle);
2417 static int raw1394_iso_recv_init(struct file_info *fi, void __user * uaddr)
2419 struct raw1394_iso_status stat;
2424 if (copy_from_user(&stat, uaddr, sizeof(stat)))
2427 fi->iso_handle = hpsb_iso_recv_init(fi->host,
2428 stat.config.data_buf_size,
2429 stat.config.buf_packets,
2430 stat.config.channel,
2431 stat.config.dma_mode,
2432 stat.config.irq_interval,
2433 rawiso_activity_cb);
2434 if (!fi->iso_handle)
2437 fi->iso_state = RAW1394_ISO_RECV;
2439 raw1394_iso_fill_status(fi->iso_handle, &stat);
2440 if (copy_to_user(uaddr, &stat, sizeof(stat)))
2445 static int raw1394_iso_get_status(struct file_info *fi, void __user * uaddr)
2447 struct raw1394_iso_status stat;
2448 struct hpsb_iso *iso = fi->iso_handle;
2450 raw1394_iso_fill_status(fi->iso_handle, &stat);
2451 if (copy_to_user(uaddr, &stat, sizeof(stat)))
2454 /* reset overflow counter */
2455 atomic_set(&iso->overflows, 0);
2456 /* reset skip counter */
2457 atomic_set(&iso->skips, 0);
2462 /* copy N packet_infos out of the ringbuffer into user-supplied array */
2463 static int raw1394_iso_recv_packets(struct file_info *fi, void __user * uaddr)
2465 struct raw1394_iso_packets upackets;
2466 unsigned int packet = fi->iso_handle->first_packet;
2469 if (copy_from_user(&upackets, uaddr, sizeof(upackets)))
2472 if (upackets.n_packets > hpsb_iso_n_ready(fi->iso_handle))
2475 /* ensure user-supplied buffer is accessible and big enough */
2476 if (!access_ok(VERIFY_WRITE, upackets.infos,
2477 upackets.n_packets *
2478 sizeof(struct raw1394_iso_packet_info)))
2481 /* copy the packet_infos out */
2482 for (i = 0; i < upackets.n_packets; i++) {
2483 if (__copy_to_user(&upackets.infos[i],
2484 &fi->iso_handle->infos[packet],
2485 sizeof(struct raw1394_iso_packet_info)))
2488 packet = (packet + 1) % fi->iso_handle->buf_packets;
2494 /* copy N packet_infos from user to ringbuffer, and queue them for transmission */
2495 static int raw1394_iso_send_packets(struct file_info *fi, void __user * uaddr)
2497 struct raw1394_iso_packets upackets;
2500 if (copy_from_user(&upackets, uaddr, sizeof(upackets)))
2503 if (upackets.n_packets >= fi->iso_handle->buf_packets)
2506 if (upackets.n_packets >= hpsb_iso_n_ready(fi->iso_handle))
2509 /* ensure user-supplied buffer is accessible and big enough */
2510 if (!access_ok(VERIFY_READ, upackets.infos,
2511 upackets.n_packets *
2512 sizeof(struct raw1394_iso_packet_info)))
2515 /* copy the infos structs in and queue the packets */
2516 for (i = 0; i < upackets.n_packets; i++) {
2517 struct raw1394_iso_packet_info info;
2519 if (__copy_from_user(&info, &upackets.infos[i],
2520 sizeof(struct raw1394_iso_packet_info)))
2523 rv = hpsb_iso_xmit_queue_packet(fi->iso_handle, info.offset,
2524 info.len, info.tag, info.sy);
2532 static void raw1394_iso_shutdown(struct file_info *fi)
2535 hpsb_iso_shutdown(fi->iso_handle);
2537 fi->iso_handle = NULL;
2538 fi->iso_state = RAW1394_ISO_INACTIVE;
2541 static int raw1394_read_cycle_timer(struct file_info *fi, void __user * uaddr)
2543 struct raw1394_cycle_timer ct;
2546 err = hpsb_read_cycle_timer(fi->host, &ct.cycle_timer, &ct.local_time);
2548 if (copy_to_user(uaddr, &ct, sizeof(ct)))
2553 /* mmap the rawiso xmit/recv buffer */
2554 static int raw1394_mmap(struct file *file, struct vm_area_struct *vma)
2556 struct file_info *fi = file->private_data;
2559 if (!mutex_trylock(&fi->state_mutex))
2562 if (fi->iso_state == RAW1394_ISO_INACTIVE)
2565 ret = dma_region_mmap(&fi->iso_handle->data_buf, file, vma);
2567 mutex_unlock(&fi->state_mutex);
2572 static long raw1394_ioctl_inactive(struct file_info *fi, unsigned int cmd,
2576 case RAW1394_IOC_ISO_XMIT_INIT:
2577 return raw1394_iso_xmit_init(fi, argp);
2578 case RAW1394_IOC_ISO_RECV_INIT:
2579 return raw1394_iso_recv_init(fi, argp);
2585 static long raw1394_ioctl_recv(struct file_info *fi, unsigned int cmd,
2588 void __user *argp = (void __user *)arg;
2591 case RAW1394_IOC_ISO_RECV_START:{
2594 if (copy_from_user(&args[0], argp, sizeof(args)))
2596 return hpsb_iso_recv_start(fi->iso_handle,
2597 args[0], args[1], args[2]);
2599 case RAW1394_IOC_ISO_XMIT_RECV_STOP:
2600 hpsb_iso_stop(fi->iso_handle);
2602 case RAW1394_IOC_ISO_RECV_LISTEN_CHANNEL:
2603 return hpsb_iso_recv_listen_channel(fi->iso_handle, arg);
2604 case RAW1394_IOC_ISO_RECV_UNLISTEN_CHANNEL:
2605 return hpsb_iso_recv_unlisten_channel(fi->iso_handle, arg);
2606 case RAW1394_IOC_ISO_RECV_SET_CHANNEL_MASK:{
2609 if (copy_from_user(&mask, argp, sizeof(mask)))
2611 return hpsb_iso_recv_set_channel_mask(fi->iso_handle,
2614 case RAW1394_IOC_ISO_GET_STATUS:
2615 return raw1394_iso_get_status(fi, argp);
2616 case RAW1394_IOC_ISO_RECV_PACKETS:
2617 return raw1394_iso_recv_packets(fi, argp);
2618 case RAW1394_IOC_ISO_RECV_RELEASE_PACKETS:
2619 return hpsb_iso_recv_release_packets(fi->iso_handle, arg);
2620 case RAW1394_IOC_ISO_RECV_FLUSH:
2621 return hpsb_iso_recv_flush(fi->iso_handle);
2622 case RAW1394_IOC_ISO_SHUTDOWN:
2623 raw1394_iso_shutdown(fi);
2625 case RAW1394_IOC_ISO_QUEUE_ACTIVITY:
2626 queue_rawiso_event(fi);
2633 static long raw1394_ioctl_xmit(struct file_info *fi, unsigned int cmd,
2637 case RAW1394_IOC_ISO_XMIT_START:{
2640 if (copy_from_user(&args[0], argp, sizeof(args)))
2642 return hpsb_iso_xmit_start(fi->iso_handle,
2645 case RAW1394_IOC_ISO_XMIT_SYNC:
2646 return hpsb_iso_xmit_sync(fi->iso_handle);
2647 case RAW1394_IOC_ISO_XMIT_RECV_STOP:
2648 hpsb_iso_stop(fi->iso_handle);
2650 case RAW1394_IOC_ISO_GET_STATUS:
2651 return raw1394_iso_get_status(fi, argp);
2652 case RAW1394_IOC_ISO_XMIT_PACKETS:
2653 return raw1394_iso_send_packets(fi, argp);
2654 case RAW1394_IOC_ISO_SHUTDOWN:
2655 raw1394_iso_shutdown(fi);
2657 case RAW1394_IOC_ISO_QUEUE_ACTIVITY:
2658 queue_rawiso_event(fi);
2665 /* ioctl is only used for rawiso operations */
2666 static long raw1394_ioctl(struct file *file, unsigned int cmd,
2669 struct file_info *fi = file->private_data;
2670 void __user *argp = (void __user *)arg;
2673 /* state-independent commands */
2675 case RAW1394_IOC_GET_CYCLE_TIMER:
2676 return raw1394_read_cycle_timer(fi, argp);
2681 if (!mutex_trylock(&fi->state_mutex))
2684 switch (fi->iso_state) {
2685 case RAW1394_ISO_INACTIVE:
2686 ret = raw1394_ioctl_inactive(fi, cmd, argp);
2688 case RAW1394_ISO_RECV:
2689 ret = raw1394_ioctl_recv(fi, cmd, arg);
2691 case RAW1394_ISO_XMIT:
2692 ret = raw1394_ioctl_xmit(fi, cmd, argp);
2699 mutex_unlock(&fi->state_mutex);
2704 #ifdef CONFIG_COMPAT
2705 struct raw1394_iso_packets32 {
2707 compat_uptr_t infos;
2708 } __attribute__((packed));
2710 struct raw1394_cycle_timer32 {
2714 #if defined(CONFIG_X86_64) || defined(CONFIG_IA64)
2715 __attribute__((packed))
2719 #define RAW1394_IOC_ISO_RECV_PACKETS32 \
2720 _IOW ('#', 0x25, struct raw1394_iso_packets32)
2721 #define RAW1394_IOC_ISO_XMIT_PACKETS32 \
2722 _IOW ('#', 0x27, struct raw1394_iso_packets32)
2723 #define RAW1394_IOC_GET_CYCLE_TIMER32 \
2724 _IOR ('#', 0x30, struct raw1394_cycle_timer32)
2726 static long raw1394_iso_xmit_recv_packets32(struct file *file, unsigned int cmd,
2727 struct raw1394_iso_packets32 __user *arg)
2729 compat_uptr_t infos32;
2732 struct raw1394_iso_packets __user *dst = compat_alloc_user_space(sizeof(struct raw1394_iso_packets));
2734 if (!copy_in_user(&dst->n_packets, &arg->n_packets, sizeof arg->n_packets) &&
2735 !copy_from_user(&infos32, &arg->infos, sizeof infos32)) {
2736 infos = compat_ptr(infos32);
2737 if (!copy_to_user(&dst->infos, &infos, sizeof infos))
2738 err = raw1394_ioctl(file, cmd, (unsigned long)dst);
2743 static long raw1394_read_cycle_timer32(struct file_info *fi, void __user * uaddr)
2745 struct raw1394_cycle_timer32 ct;
2748 err = hpsb_read_cycle_timer(fi->host, &ct.cycle_timer, &ct.local_time);
2750 if (copy_to_user(uaddr, &ct, sizeof(ct)))
2755 static long raw1394_compat_ioctl(struct file *file,
2756 unsigned int cmd, unsigned long arg)
2758 struct file_info *fi = file->private_data;
2759 void __user *argp = (void __user *)arg;
2763 /* These requests have same format as long as 'int' has same size. */
2764 case RAW1394_IOC_ISO_RECV_INIT:
2765 case RAW1394_IOC_ISO_RECV_START:
2766 case RAW1394_IOC_ISO_RECV_LISTEN_CHANNEL:
2767 case RAW1394_IOC_ISO_RECV_UNLISTEN_CHANNEL:
2768 case RAW1394_IOC_ISO_RECV_SET_CHANNEL_MASK:
2769 case RAW1394_IOC_ISO_RECV_RELEASE_PACKETS:
2770 case RAW1394_IOC_ISO_RECV_FLUSH:
2771 case RAW1394_IOC_ISO_XMIT_RECV_STOP:
2772 case RAW1394_IOC_ISO_XMIT_INIT:
2773 case RAW1394_IOC_ISO_XMIT_START:
2774 case RAW1394_IOC_ISO_XMIT_SYNC:
2775 case RAW1394_IOC_ISO_GET_STATUS:
2776 case RAW1394_IOC_ISO_SHUTDOWN:
2777 case RAW1394_IOC_ISO_QUEUE_ACTIVITY:
2778 err = raw1394_ioctl(file, cmd, arg);
2780 /* These request have different format. */
2781 case RAW1394_IOC_ISO_RECV_PACKETS32:
2782 err = raw1394_iso_xmit_recv_packets32(file, RAW1394_IOC_ISO_RECV_PACKETS, argp);
2784 case RAW1394_IOC_ISO_XMIT_PACKETS32:
2785 err = raw1394_iso_xmit_recv_packets32(file, RAW1394_IOC_ISO_XMIT_PACKETS, argp);
2787 case RAW1394_IOC_GET_CYCLE_TIMER32:
2788 err = raw1394_read_cycle_timer32(fi, argp);
2799 static unsigned int raw1394_poll(struct file *file, poll_table * pt)
2801 struct file_info *fi = file->private_data;
2802 unsigned int mask = POLLOUT | POLLWRNORM;
2803 unsigned long flags;
2805 poll_wait(file, &fi->wait_complete, pt);
2807 spin_lock_irqsave(&fi->reqlists_lock, flags);
2808 if (!list_empty(&fi->req_complete)) {
2809 mask |= POLLIN | POLLRDNORM;
2811 spin_unlock_irqrestore(&fi->reqlists_lock, flags);
2816 static int raw1394_open(struct inode *inode, struct file *file)
2818 struct file_info *fi;
2820 fi = kzalloc(sizeof(*fi), GFP_KERNEL);
2824 fi->notification = (u8) RAW1394_NOTIFY_ON; /* busreset notification */
2826 INIT_LIST_HEAD(&fi->list);
2827 mutex_init(&fi->state_mutex);
2829 INIT_LIST_HEAD(&fi->req_pending);
2830 INIT_LIST_HEAD(&fi->req_complete);
2831 spin_lock_init(&fi->reqlists_lock);
2832 init_waitqueue_head(&fi->wait_complete);
2833 INIT_LIST_HEAD(&fi->addr_list);
2835 file->private_data = fi;
2840 static int raw1394_release(struct inode *inode, struct file *file)
2842 struct file_info *fi = file->private_data;
2843 struct list_head *lh;
2844 struct pending_request *req;
2847 struct list_head *entry;
2848 struct arm_addr *addr = NULL;
2849 struct host_info *hi;
2850 struct file_info *fi_hlp = NULL;
2851 struct arm_addr *arm_addr = NULL;
2854 unsigned long flags;
2856 if (fi->iso_state != RAW1394_ISO_INACTIVE)
2857 raw1394_iso_shutdown(fi);
2859 spin_lock_irqsave(&host_info_lock, flags);
2862 /* set address-entries invalid */
2864 while (!list_empty(&fi->addr_list)) {
2866 lh = fi->addr_list.next;
2867 addr = list_entry(lh, struct arm_addr, addr_list);
2868 /* another host with valid address-entry containing
2869 same addressrange? */
2870 list_for_each_entry(hi, &host_info_list, list) {
2871 if (hi->host != fi->host) {
2872 list_for_each_entry(fi_hlp, &hi->file_info_list,
2874 entry = fi_hlp->addr_list.next;
2875 while (entry != &(fi_hlp->addr_list)) {
2876 arm_addr = list_entry(entry, struct
2879 if (arm_addr->start ==
2882 ("raw1394_release: "
2883 "another host ownes "
2884 "same addressrange");
2888 entry = entry->next;
2896 if (!another_host) {
2897 DBGMSG("raw1394_release: call hpsb_arm_unregister");
2899 hpsb_unregister_addrspace(&raw1394_highlevel,
2900 fi->host, addr->start);
2904 "raw1394_release arm_Unregister failed\n");
2907 DBGMSG("raw1394_release: delete addr_entry from list");
2908 list_del(&addr->addr_list);
2909 vfree(addr->addr_space_buffer);
2912 spin_unlock_irqrestore(&host_info_lock, flags);
2914 printk(KERN_ERR "raw1394: during addr_list-release "
2915 "error(s) occurred \n");
2919 /* This locked section guarantees that neither
2920 * complete nor pending requests exist once i!=0 */
2921 spin_lock_irqsave(&fi->reqlists_lock, flags);
2922 while ((req = __next_complete_req(fi)))
2923 free_pending_request(req);
2925 i = list_empty(&fi->req_pending);
2926 spin_unlock_irqrestore(&fi->reqlists_lock, flags);
2931 * Sleep until more requests can be freed.
2933 * NB: We call the macro wait_event() with a condition argument
2934 * with side effect. This is only possible because the side
2935 * effect does not occur until the condition became true, and
2936 * wait_event() won't evaluate the condition again after that.
2938 wait_event(fi->wait_complete, (req = next_complete_req(fi)));
2939 free_pending_request(req);
2942 /* Remove any sub-trees left by user space programs */
2943 for (i = 0; i < RAW1394_MAX_USER_CSR_DIRS; i++) {
2944 struct csr1212_dentry *dentry;
2945 if (!fi->csr1212_dirs[i])
2948 fi->csr1212_dirs[i]->value.directory.dentries_head; dentry;
2949 dentry = dentry->next) {
2950 csr1212_detach_keyval_from_directory(fi->host->csr.rom->
2954 csr1212_release_keyval(fi->csr1212_dirs[i]);
2955 fi->csr1212_dirs[i] = NULL;
2959 if ((csr_mod || fi->cfgrom_upd)
2960 && hpsb_update_config_rom_image(fi->host) < 0)
2962 ("Failed to generate Configuration ROM image for host %d",
2965 if (fi->state == connected) {
2966 spin_lock_irqsave(&host_info_lock, flags);
2967 list_del(&fi->list);
2968 spin_unlock_irqrestore(&host_info_lock, flags);
2970 put_device(&fi->host->device);
2973 spin_lock_irqsave(&host_info_lock, flags);
2975 module_put(fi->host->driver->owner);
2976 spin_unlock_irqrestore(&host_info_lock, flags);
2983 /*** HOTPLUG STUFF **********************************************************/
2985 * Export information about protocols/devices supported by this driver.
2988 static const struct ieee1394_device_id raw1394_id_table[] = {
2990 .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION,
2991 .specifier_id = AVC_UNIT_SPEC_ID_ENTRY & 0xffffff,
2992 .version = AVC_SW_VERSION_ENTRY & 0xffffff},
2994 .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION,
2995 .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff,
2996 .version = CAMERA_SW_VERSION_ENTRY & 0xffffff},
2998 .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION,
2999 .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff,
3000 .version = (CAMERA_SW_VERSION_ENTRY + 1) & 0xffffff},
3002 .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION,
3003 .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff,
3004 .version = (CAMERA_SW_VERSION_ENTRY + 2) & 0xffffff},
3008 MODULE_DEVICE_TABLE(ieee1394, raw1394_id_table);
3011 static struct hpsb_protocol_driver raw1394_driver = {
3015 /******************************************************************************/
3017 static struct hpsb_highlevel raw1394_highlevel = {
3018 .name = RAW1394_DEVICE_NAME,
3019 .add_host = add_host,
3020 .remove_host = remove_host,
3021 .host_reset = host_reset,
3022 .fcp_request = fcp_request,
3025 static struct cdev raw1394_cdev;
3026 static const struct file_operations raw1394_fops = {
3027 .owner = THIS_MODULE,
3028 .read = raw1394_read,
3029 .write = raw1394_write,
3030 .mmap = raw1394_mmap,
3031 .unlocked_ioctl = raw1394_ioctl,
3032 #ifdef CONFIG_COMPAT
3033 .compat_ioctl = raw1394_compat_ioctl,
3035 .poll = raw1394_poll,
3036 .open = raw1394_open,
3037 .release = raw1394_release,
3040 static int __init init_raw1394(void)
3044 hpsb_register_highlevel(&raw1394_highlevel);
3047 (device_create(hpsb_protocol_class, NULL,
3048 MKDEV(IEEE1394_MAJOR,
3049 IEEE1394_MINOR_BLOCK_RAW1394 * 16),
3050 NULL, RAW1394_DEVICE_NAME))) {
3055 cdev_init(&raw1394_cdev, &raw1394_fops);
3056 raw1394_cdev.owner = THIS_MODULE;
3057 ret = cdev_add(&raw1394_cdev, IEEE1394_RAW1394_DEV, 1);
3059 HPSB_ERR("raw1394 failed to register minor device block");
3063 HPSB_INFO("raw1394: /dev/%s device initialized", RAW1394_DEVICE_NAME);
3065 ret = hpsb_register_protocol(&raw1394_driver);
3067 HPSB_ERR("raw1394: failed to register protocol");
3068 cdev_del(&raw1394_cdev);
3075 device_destroy(hpsb_protocol_class,
3076 MKDEV(IEEE1394_MAJOR,
3077 IEEE1394_MINOR_BLOCK_RAW1394 * 16));
3079 hpsb_unregister_highlevel(&raw1394_highlevel);
3084 static void __exit cleanup_raw1394(void)
3086 device_destroy(hpsb_protocol_class,
3087 MKDEV(IEEE1394_MAJOR,
3088 IEEE1394_MINOR_BLOCK_RAW1394 * 16));
3089 cdev_del(&raw1394_cdev);
3090 hpsb_unregister_highlevel(&raw1394_highlevel);
3091 hpsb_unregister_protocol(&raw1394_driver);
3094 module_init(init_raw1394);
3095 module_exit(cleanup_raw1394);
3096 MODULE_LICENSE("GPL");