patch-2.4.21 linux-2.4.21/drivers/ieee1394/raw1394.c
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- Lines: 2227
- Date:
2003-06-13 07:51:34.000000000 -0700
- Orig file:
linux-2.4.20/drivers/ieee1394/raw1394.c
- Orig date:
2002-11-28 15:53:13.000000000 -0800
diff -urN linux-2.4.20/drivers/ieee1394/raw1394.c linux-2.4.21/drivers/ieee1394/raw1394.c
@@ -4,9 +4,27 @@
* 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>
@@ -28,9 +46,11 @@
#include "ieee1394_core.h"
#include "hosts.h"
#include "highlevel.h"
+#include "iso.h"
#include "ieee1394_transactions.h"
+#include "ieee1394_hotplug.h"
#include "raw1394.h"
-
+#include "raw1394-private.h"
#if BITS_PER_LONG == 64
#define int2ptr(x) ((void *)x)
@@ -40,6 +60,16 @@
#define ptr2int(x) ((u64)(u32)x)
#endif
+#ifdef CONFIG_IEEE1394_VERBOSEDEBUG
+#define RAW1394_DEBUG
+#endif
+
+#ifdef RAW1394_DEBUG
+#define DBGMSG(fmt, args...) \
+printk(KERN_INFO "raw1394:" fmt "\n" , ## args)
+#else
+#define DBGMSG(fmt, args...)
+#endif
static devfs_handle_t devfs_handle;
@@ -48,11 +78,26 @@
static spinlock_t host_info_lock = SPIN_LOCK_UNLOCKED;
static atomic_t internal_generation = ATOMIC_INIT(0);
-static struct hpsb_highlevel *hl_handle;
-
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, unsigned int length, u16 flags);
+static int arm_write (struct hpsb_host *host, int nodeid, int destid,
+ quadlet_t *data, u64 addr, unsigned int length, u16 flags);
+static int arm_lock (struct hpsb_host *host, int nodeid, quadlet_t *store,
+ u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, u16 flags);
+static int arm_lock64 (struct hpsb_host *host, int nodeid, octlet_t *store,
+ u64 addr, octlet_t data, octlet_t arg, int ext_tcode, u16 flags);
+static struct hpsb_address_ops arm_ops = {
+ .read = arm_read,
+ .write = arm_write,
+ .lock = arm_lock,
+ .lock64 = arm_lock64,
+};
+
static void queue_complete_cb(struct pending_request *req);
static struct pending_request *__alloc_pending_request(int flags)
@@ -64,7 +109,6 @@
if (req != NULL) {
memset(req, 0, sizeof(struct pending_request));
INIT_LIST_HEAD(&req->list);
- INIT_TQUEUE(&req->tq, (void(*)(void*))queue_complete_cb, NULL);
}
return req;
@@ -89,18 +133,25 @@
kfree(req);
}
+/* fi->reqlists_lock must be taken */
+static void __queue_complete_req(struct pending_request *req)
+{
+ struct file_info *fi = req->file_info;
+ list_del(&req->list);
+ list_add_tail(&req->list, &fi->req_complete);
+
+ up(&fi->complete_sem);
+ wake_up_interruptible(&fi->poll_wait_complete);
+}
+
static void queue_complete_req(struct pending_request *req)
{
unsigned long flags;
struct file_info *fi = req->file_info;
spin_lock_irqsave(&fi->reqlists_lock, flags);
- list_del(&req->list);
- list_add_tail(&req->list, &fi->req_complete);
+ __queue_complete_req(req);
spin_unlock_irqrestore(&fi->reqlists_lock, flags);
-
- up(&fi->complete_sem);
- wake_up_interruptible(&fi->poll_wait_complete);
}
static void queue_complete_cb(struct pending_request *req)
@@ -128,7 +179,11 @@
req->req.length = 0;
}
- free_tlabel(packet->host, packet->node_id, packet->tlabel);
+ if ((req->req.type == RAW1394_REQ_ASYNC_READ) ||
+ (req->req.type == RAW1394_REQ_ASYNC_WRITE) ||
+ (req->req.type == RAW1394_REQ_LOCK) ||
+ (req->req.type == RAW1394_REQ_LOCK64))
+ hpsb_free_tlabel(packet);
queue_complete_req(req);
}
@@ -137,17 +192,19 @@
static void add_host(struct hpsb_host *host)
{
struct host_info *hi;
+ unsigned long flags;
+
+ hi = (struct host_info *)kmalloc(sizeof(struct host_info), GFP_KERNEL);
- hi = (struct host_info *)kmalloc(sizeof(struct host_info), SLAB_KERNEL);
if (hi != NULL) {
INIT_LIST_HEAD(&hi->list);
hi->host = host;
INIT_LIST_HEAD(&hi->file_info_list);
- spin_lock_irq(&host_info_lock);
+ spin_lock_irqsave(&host_info_lock, flags);
list_add_tail(&hi->list, &host_info_list);
host_count++;
- spin_unlock_irq(&host_info_lock);
+ spin_unlock_irqrestore(&host_info_lock, flags);
}
atomic_inc(&internal_generation);
@@ -172,15 +229,22 @@
static void remove_host(struct hpsb_host *host)
{
struct host_info *hi;
+ unsigned long flags;
- spin_lock_irq(&host_info_lock);
+ 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_irq(&host_info_lock);
+ spin_unlock_irqrestore(&host_info_lock, flags);
if (hi == NULL) {
printk(KERN_ERR "raw1394: attempt to remove unknown host "
@@ -207,20 +271,22 @@
if (hi != NULL) {
list_for_each(lh, &hi->file_info_list) {
fi = list_entry(lh, struct file_info, list);
- req = __alloc_pending_request(SLAB_ATOMIC);
+ if (fi->notification == RAW1394_NOTIFY_ON) {
+ req = __alloc_pending_request(SLAB_ATOMIC);
- if (req != NULL) {
- req->file_info = fi;
- req->req.type = RAW1394_REQ_BUS_RESET;
- req->req.generation = get_hpsb_generation(host);
- req->req.misc = (host->node_id << 16)
- | host->node_count;
- if (fi->protocol_version > 3) {
- req->req.misc |= ((host->irm_id
- & NODE_MASK) << 8);
- }
+ 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);
+ queue_complete_req(req);
+ }
}
}
}
@@ -492,7 +558,7 @@
lh = lh->next;
}
hi = list_entry(lh, struct host_info, list);
- hpsb_ref_host(hi->host);
+ hpsb_ref_host(hi->host); // XXX Need to handle failure case
list_add_tail(&fi->list, &hi->file_info_list);
fi->host = hi->host;
fi->state = connected;
@@ -505,8 +571,7 @@
req->req.misc = (fi->host->node_id << 16)
| fi->host->node_count;
if (fi->protocol_version > 3) {
- req->req.misc |=
- (fi->host->irm_id & NODE_MASK) << 8;
+ req->req.misc |= NODEID_TO_NODE(fi->host->irm_id) << 8;
}
} else {
req->req.error = RAW1394_ERROR_INVALID_ARG;
@@ -529,7 +594,7 @@
{
int channel = req->req.misc;
- spin_lock(&host_info_lock);
+ spin_lock_irq(&host_info_lock);
if ((channel > 63) || (channel < -64)) {
req->req.error = RAW1394_ERROR_INVALID_ARG;
} else if (channel >= 0) {
@@ -537,17 +602,20 @@
if (fi->listen_channels & (1ULL << channel)) {
req->req.error = RAW1394_ERROR_ALREADY;
} else {
- fi->listen_channels |= 1ULL << channel;
- hpsb_listen_channel(hl_handle, fi->host, channel);
- fi->iso_buffer = int2ptr(req->req.recvb);
- fi->iso_buffer_length = req->req.length;
+ if(hpsb_listen_channel(&raw1394_highlevel, fi->host, channel)) {
+ req->req.error = RAW1394_ERROR_ALREADY;
+ } else {
+ fi->listen_channels |= 1ULL << channel;
+ fi->iso_buffer = int2ptr(req->req.recvb);
+ fi->iso_buffer_length = req->req.length;
+ }
}
} else {
/* deallocate channel (one's complement neg) req.misc */
channel = ~channel;
if (fi->listen_channels & (1ULL << channel)) {
- hpsb_unlisten_channel(hl_handle, fi->host, channel);
+ hpsb_unlisten_channel(&raw1394_highlevel, fi->host, channel);
fi->listen_channels &= ~(1ULL << channel);
} else {
req->req.error = RAW1394_ERROR_INVALID_ARG;
@@ -556,7 +624,7 @@
req->req.length = 0;
queue_complete_req(req);
- spin_unlock(&host_info_lock);
+ spin_unlock_irq(&host_info_lock);
}
static void handle_fcp_listen(struct file_info *fi, struct pending_request *req)
@@ -579,34 +647,51 @@
queue_complete_req(req);
}
-static int handle_local_request(struct file_info *fi,
+
+static int handle_async_request(struct file_info *fi,
struct pending_request *req, int node)
{
+ struct hpsb_packet *packet = NULL;
u64 addr = req->req.address & 0xffffffffffffULL;
- req->data = kmalloc(req->req.length, SLAB_KERNEL);
- if (!req->data) return -ENOMEM;
- req->free_data = 1;
-
switch (req->req.type) {
case RAW1394_REQ_ASYNC_READ:
- req->req.error = highlevel_read(fi->host, node, req->data, addr,
- req->req.length);
- break;
+ DBGMSG("read_request called");
+ packet = hpsb_make_readpacket(fi->host, node, addr, req->req.length);
- case RAW1394_REQ_ASYNC_WRITE:
- if (copy_from_user(req->data, int2ptr(req->req.sendb),
- req->req.length)) {
- req->req.error = RAW1394_ERROR_MEMFAULT;
- break;
- }
+ if (!packet)
+ return -ENOMEM;
- req->req.error = highlevel_write(fi->host, node, node, req->data,
- addr, req->req.length);
- req->req.length = 0;
+ 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_LOCK:
+ DBGMSG("lock_request called");
if ((req->req.misc == EXTCODE_FETCH_ADD)
|| (req->req.misc == EXTCODE_LITTLE_ADD)) {
if (req->req.length != 4) {
@@ -620,103 +705,36 @@
}
}
- if (copy_from_user(req->data, int2ptr(req->req.sendb),
+ 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;
}
- if (req->req.length == 8) {
- req->req.error = highlevel_lock(fi->host, node,
- req->data, addr,
- req->data[1],
- req->data[0],
- req->req.misc);
- req->req.length = 4;
- } else {
- req->req.error = highlevel_lock(fi->host, node,
- req->data, addr,
- req->data[0], 0,
- req->req.misc);
- }
+ req->data = packet->data;
+ req->req.length = 4;
break;
case RAW1394_REQ_LOCK64:
- default:
- req->req.error = RAW1394_ERROR_STATE_ORDER;
- }
-
- if (req->req.error)
- req->req.length = 0;
- if (req->req.error >= 0)
- req->req.error |= ACK_PENDING << 16;
-
- queue_complete_req(req);
- return sizeof(struct raw1394_request);
-}
-
-static int handle_remote_request(struct file_info *fi,
- struct pending_request *req, int node)
-{
- struct hpsb_packet *packet = NULL;
- u64 addr = req->req.address & 0xffffffffffffULL;
-
- switch (req->req.type) {
- case RAW1394_REQ_ASYNC_READ:
- if (req->req.length == 4) {
- packet = hpsb_make_readqpacket(fi->host, node, addr);
- if (!packet) return -ENOMEM;
-
- req->data = &packet->header[3];
- } else {
- packet = hpsb_make_readbpacket(fi->host, node, addr,
- req->req.length);
- if (!packet) return -ENOMEM;
-
- req->data = packet->data;
- }
- break;
-
- case RAW1394_REQ_ASYNC_WRITE:
- if (req->req.length == 4) {
- quadlet_t x;
-
- if (copy_from_user(&x, int2ptr(req->req.sendb), 4)) {
- req->req.error = RAW1394_ERROR_MEMFAULT;
- }
-
- packet = hpsb_make_writeqpacket(fi->host, node, addr,
- x);
- if (!packet) return -ENOMEM;
- } else {
- packet = hpsb_make_writebpacket(fi->host, node, addr,
- req->req.length);
- 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("lock64_request called");
if ((req->req.misc == EXTCODE_FETCH_ADD)
|| (req->req.misc == EXTCODE_LITTLE_ADD)) {
- if (req->req.length != 4) {
+ if (req->req.length != 8) {
req->req.error = RAW1394_ERROR_INVALID_ARG;
break;
}
} else {
- if (req->req.length != 8) {
+ if (req->req.length != 16) {
req->req.error = RAW1394_ERROR_INVALID_ARG;
break;
}
}
-
- packet = hpsb_make_lockpacket(fi->host, node, addr,
- req->req.misc);
+ 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),
@@ -726,10 +744,9 @@
}
req->data = packet->data;
- req->req.length = 4;
+ req->req.length = 8;
break;
- case RAW1394_REQ_LOCK64:
default:
req->req.error = RAW1394_ERROR_STATE_ORDER;
}
@@ -742,8 +759,7 @@
return sizeof(struct raw1394_request);
}
- req->tq.data = req;
- hpsb_add_packet_complete_task(packet, &req->tq);
+ hpsb_set_packet_complete_task(packet, (void(*)(void*))queue_complete_cb, req);
spin_lock_irq(&fi->reqlists_lock);
list_add_tail(&req->list, &fi->req_pending);
@@ -754,7 +770,7 @@
if (!hpsb_send_packet(packet)) {
req->req.error = RAW1394_ERROR_SEND_ERROR;
req->req.length = 0;
- free_tlabel(packet->host, packet->node_id, packet->tlabel);
+ hpsb_free_tlabel(packet);
queue_complete_req(req);
}
return sizeof(struct raw1394_request);
@@ -765,15 +781,14 @@
{
struct hpsb_packet *packet;
- packet = alloc_hpsb_packet(req->req.length);
- if (!packet) return -ENOMEM;
- req->packet = packet;
+ packet = hpsb_make_isopacket(fi->host, req->req.length, channel & 0x3f,
+ (req->req.misc >> 16) & 0x3, req->req.misc & 0xf);
+ if (!packet)
+ return -ENOMEM;
- fill_iso_packet(packet, req->req.length, channel & 0x3f,
- (req->req.misc >> 16) & 0x3, req->req.misc & 0xf);
- packet->type = hpsb_iso;
packet->speed_code = req->req.address & 0x3;
- packet->host = fi->host;
+
+ req->packet = packet;
if (copy_from_user(packet->data, int2ptr(req->req.sendb),
req->req.length)) {
@@ -783,17 +798,15 @@
return sizeof(struct raw1394_request);
}
- req->tq.data = req;
- req->tq.routine = (void (*)(void*))queue_complete_req;
req->req.length = 0;
- hpsb_add_packet_complete_task(packet, &req->tq);
+ hpsb_set_packet_complete_task(packet, (void (*)(void*))queue_complete_req, req);
spin_lock_irq(&fi->reqlists_lock);
list_add_tail(&req->list, &fi->req_pending);
spin_unlock_irq(&fi->reqlists_lock);
/* Update the generation of the packet just before sending. */
- packet->generation = get_hpsb_generation(fi->host);
+ packet->generation = req->req.generation;
if (!hpsb_send_packet(packet)) {
req->req.error = RAW1394_ERROR_SEND_ERROR;
@@ -803,25 +816,1090 @@
return sizeof(struct raw1394_request);
}
-static int state_connected(struct file_info *fi, struct pending_request *req)
+static int handle_async_send(struct file_info *fi, struct pending_request *req)
{
- int node = req->req.address >> 48;
+ struct hpsb_packet *packet;
+ int header_length = req->req.misc & 0xffff;
+ int expect_response = req->req.misc >> 16;
- req->req.error = RAW1394_ERROR_NONE;
+ if ((header_length > req->req.length) ||
+ (header_length < 12))
+ {
+ req->req.error = RAW1394_ERROR_INVALID_ARG;
+ req->req.length = 0;
+ queue_complete_req(req);
+ return sizeof(struct raw1394_request);
+ }
- if (req->req.type == RAW1394_REQ_ISO_SEND) {
- return handle_iso_send(fi, req, node);
+ packet = alloc_hpsb_packet(req->req.length-header_length);
+ req->packet = packet;
+ if (!packet) return -ENOMEM;
+
+ if (copy_from_user(packet->header, int2ptr(req->req.sendb),
+ header_length)) {
+ req->req.error = RAW1394_ERROR_MEMFAULT;
+ req->req.length = 0;
+ queue_complete_req(req);
+ return sizeof(struct raw1394_request);
}
- if (req->req.generation != get_hpsb_generation(fi->host)) {
- req->req.error = RAW1394_ERROR_GENERATION;
- req->req.generation = get_hpsb_generation(fi->host);
+ if (copy_from_user(packet->data, ((u8*) int2ptr(req->req.sendb)) + header_length,
+ packet->data_size)) {
+ req->req.error = RAW1394_ERROR_MEMFAULT;
req->req.length = 0;
queue_complete_req(req);
return sizeof(struct raw1394_request);
}
+ packet->type = hpsb_async;
+ packet->node_id = packet->header[0] >> 16;
+ packet->tcode = (packet->header[0] >> 4) & 0xf;
+ packet->tlabel = (packet->header[0] >> 10) &0x3f;
+ packet->host = fi->host;
+ packet->expect_response = expect_response;
+ packet->header_size=header_length;
+ packet->data_size=req->req.length-header_length;
+
+ req->req.length = 0;
+ hpsb_set_packet_complete_task(packet, (void(*)(void*))queue_complete_cb, req);
+
+ spin_lock_irq(&fi->reqlists_lock);
+ list_add_tail(&req->list, &fi->req_pending);
+ spin_unlock_irq(&fi->reqlists_lock);
+
+ /* Update the generation of the packet just before sending. */
+ packet->generation = req->req.generation;
+
+ if (!hpsb_send_packet(packet)) {
+ req->req.error = RAW1394_ERROR_SEND_ERROR;
+ queue_complete_req(req);
+ }
+
+ return sizeof(struct raw1394_request);
+}
+
+static int arm_read (struct hpsb_host *host, int nodeid, quadlet_t *buffer,
+ u64 addr, unsigned int length, u16 flags)
+{
+ struct pending_request *req;
+ struct list_head *lh;
+ 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: %u", nodeid,
+ (u16) ((addr >>32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF),
+ length);
+ spin_lock(&host_info_lock);
+ hi = find_host_info(host); /* search address-entry */
+ if (hi != NULL) {
+ list_for_each(lh, &hi->file_info_list) {
+ fi = list_entry(lh, struct file_info, list);
+ entry = fi->addr_list.next;
+ while (entry != &(fi->addr_list)) {
+ arm_addr = list_entry(entry, struct arm_addr, addr_list);
+ if (((arm_addr->start) <= (addr)) &&
+ ((arm_addr->end) >= (addr+length))) {
+ found = 1;
+ break;
+ }
+ entry = entry->next;
+ }
+ if (found) {
+ break;
+ }
+ }
+ }
+ rcode = -1;
+ if (!found) {
+ printk(KERN_ERR "raw1394: arm_read FAILED addr_entry not found"
+ " -> rcode_address_error\n");
+ spin_unlock(&host_info_lock);
+ return (RCODE_ADDRESS_ERROR);
+ } else {
+ DBGMSG("arm_read addr_entry FOUND");
+ }
+ if (arm_addr->rec_length < length) {
+ DBGMSG("arm_read blocklength too big -> rcode_data_error");
+ rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */
+ }
+ if (rcode == -1) {
+ if (arm_addr->access_rights & ARM_READ) {
+ if (!(arm_addr->client_transactions & ARM_READ)) {
+ memcpy(buffer,(arm_addr->addr_space_buffer)+(addr-(arm_addr->start)),
+ length);
+ DBGMSG("arm_read -> (rcode_complete)");
+ rcode = RCODE_COMPLETE;
+ }
+ } else {
+ rcode = RCODE_TYPE_ERROR; /* function not allowed */
+ DBGMSG("arm_read -> rcode_type_error (access denied)");
+ }
+ }
+ if (arm_addr->notification_options & ARM_READ) {
+ DBGMSG("arm_read -> entering notification-section");
+ req = __alloc_pending_request(SLAB_ATOMIC);
+ if (!req) {
+ DBGMSG("arm_read -> rcode_conflict_error");
+ spin_unlock(&host_info_lock);
+ return(RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
+ The request may be retried */
+ }
+ if (rcode == RCODE_COMPLETE) {
+ size = sizeof(struct arm_request)+sizeof(struct arm_response) +
+ length * sizeof(byte_t) +
+ sizeof (struct arm_request_response);
+ } else {
+ size = sizeof(struct arm_request)+sizeof(struct arm_response) +
+ sizeof (struct arm_request_response);
+ }
+ req->data = kmalloc(size, SLAB_ATOMIC);
+ if (!(req->data)) {
+ free_pending_request(req);
+ DBGMSG("arm_read -> rcode_conflict_error");
+ spin_unlock(&host_info_lock);
+ return(RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
+ The request may be retried */
+ }
+ req->free_data=1;
+ req->file_info = fi;
+ req->req.type = RAW1394_REQ_ARM;
+ req->req.generation = get_hpsb_generation(host);
+ req->req.misc = ( ((length << 16) & (0xFFFF0000)) | (ARM_READ & 0xFF));
+ req->req.tag = arm_addr->arm_tag;
+ req->req.recvb = arm_addr->recvb;
+ req->req.length = size;
+ arm_req_resp = (struct arm_request_response *) (req->data);
+ arm_req = (struct arm_request *) ((byte_t *)(req->data) +
+ (sizeof (struct arm_request_response)));
+ arm_resp = (struct arm_response *) ((byte_t *)(arm_req) +
+ (sizeof(struct arm_request)));
+ arm_req->buffer = NULL;
+ arm_resp->buffer = NULL;
+ if (rcode == RCODE_COMPLETE) {
+ arm_resp->buffer = ((byte_t *)(arm_resp) +
+ (sizeof(struct arm_response)));
+ memcpy (arm_resp->buffer,
+ (arm_addr->addr_space_buffer)+(addr-(arm_addr->start)),
+ length);
+ arm_resp->buffer = int2ptr((arm_addr->recvb) +
+ sizeof (struct arm_request_response) +
+ sizeof (struct arm_request) +
+ sizeof (struct arm_response));
+ }
+ arm_resp->buffer_length = (rcode == RCODE_COMPLETE) ? length : 0;
+ arm_resp->response_code = rcode;
+ arm_req->buffer_length = 0;
+ arm_req->generation = req->req.generation;
+ arm_req->extended_transaction_code = 0;
+ arm_req->destination_offset = addr;
+ arm_req->source_nodeid = nodeid;
+ arm_req->destination_nodeid = host->node_id;
+ arm_req->tlabel = (flags >> 10) & 0x3f;
+ arm_req->tcode = (flags >> 4) & 0x0f;
+ arm_req_resp->request = int2ptr((arm_addr->recvb) +
+ sizeof (struct arm_request_response));
+ arm_req_resp->response = int2ptr((arm_addr->recvb) +
+ sizeof (struct arm_request_response) +
+ sizeof (struct arm_request));
+ queue_complete_req(req);
+ }
+ spin_unlock(&host_info_lock);
+ return(rcode);
+}
+
+static int arm_write (struct hpsb_host *host, int nodeid, int destid,
+ quadlet_t *data, u64 addr, unsigned int length, u16 flags)
+{
+ struct pending_request *req;
+ struct list_head *lh;
+ struct host_info *hi;
+ struct file_info *fi = NULL;
+ struct list_head *entry;
+ struct arm_addr *arm_addr = NULL;
+ struct arm_request *arm_req = NULL;
+ struct arm_response *arm_resp = NULL;
+ int found=0, size=0, rcode=-1, length_conflict=0;
+ struct arm_request_response *arm_req_resp = NULL;
+
+ DBGMSG("arm_write called by node: %X"
+ "addr: %4.4x %8.8x length: %u", nodeid,
+ (u16) ((addr >>32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF),
+ length);
+ spin_lock(&host_info_lock);
+ hi = find_host_info(host); /* search address-entry */
+ if (hi != NULL) {
+ list_for_each(lh, &hi->file_info_list) {
+ fi = list_entry(lh, struct file_info, list);
+ entry = fi->addr_list.next;
+ while (entry != &(fi->addr_list)) {
+ arm_addr = list_entry(entry, struct arm_addr, addr_list);
+ if (((arm_addr->start) <= (addr)) &&
+ ((arm_addr->end) >= (addr+length))) {
+ found = 1;
+ break;
+ }
+ entry = entry->next;
+ }
+ if (found) {
+ break;
+ }
+ }
+ }
+ rcode = -1;
+ if (!found) {
+ printk(KERN_ERR "raw1394: arm_write FAILED addr_entry not found"
+ " -> rcode_address_error\n");
+ spin_unlock(&host_info_lock);
+ return (RCODE_ADDRESS_ERROR);
+ } else {
+ DBGMSG("arm_write addr_entry FOUND");
+ }
+ if (arm_addr->rec_length < length) {
+ DBGMSG("arm_write blocklength too big -> rcode_data_error");
+ length_conflict = 1;
+ rcode = RCODE_DATA_ERROR; /* hardware error, data is unavailable */
+ }
+ if (rcode == -1) {
+ if (arm_addr->access_rights & ARM_WRITE) {
+ if (!(arm_addr->client_transactions & ARM_WRITE)) {
+ memcpy((arm_addr->addr_space_buffer)+(addr-(arm_addr->start)),
+ data, length);
+ DBGMSG("arm_write -> (rcode_complete)");
+ rcode = RCODE_COMPLETE;
+ }
+ } else {
+ rcode = RCODE_TYPE_ERROR; /* function not allowed */
+ DBGMSG("arm_write -> rcode_type_error (access denied)");
+ }
+ }
+ if (arm_addr->notification_options & ARM_WRITE) {
+ DBGMSG("arm_write -> entering notification-section");
+ req = __alloc_pending_request(SLAB_ATOMIC);
+ if (!req) {
+ DBGMSG("arm_write -> rcode_conflict_error");
+ spin_unlock(&host_info_lock);
+ return(RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
+ The request my be retried */
+ }
+ size = sizeof(struct arm_request)+sizeof(struct arm_response) +
+ (length) * sizeof(byte_t) +
+ sizeof (struct arm_request_response);
+ req->data = kmalloc(size, SLAB_ATOMIC);
+ if (!(req->data)) {
+ free_pending_request(req);
+ DBGMSG("arm_write -> rcode_conflict_error");
+ spin_unlock(&host_info_lock);
+ return(RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
+ The request may be retried */
+ }
+ req->free_data=1;
+ req->file_info = fi;
+ req->req.type = RAW1394_REQ_ARM;
+ req->req.generation = get_hpsb_generation(host);
+ req->req.misc = ( ((length << 16) & (0xFFFF0000)) | (ARM_WRITE & 0xFF));
+ req->req.tag = arm_addr->arm_tag;
+ req->req.recvb = arm_addr->recvb;
+ req->req.length = size;
+ arm_req_resp = (struct arm_request_response *) (req->data);
+ arm_req = (struct arm_request *) ((byte_t *)(req->data) +
+ (sizeof (struct arm_request_response)));
+ arm_resp = (struct arm_response *) ((byte_t *)(arm_req) +
+ (sizeof(struct arm_request)));
+ arm_req->buffer = ((byte_t *)(arm_resp) +
+ (sizeof(struct arm_response)));
+ arm_resp->buffer = NULL;
+ memcpy (arm_req->buffer, data, length);
+ arm_req->buffer = int2ptr((arm_addr->recvb) +
+ sizeof (struct arm_request_response) +
+ sizeof (struct arm_request) +
+ sizeof (struct arm_response));
+ arm_req->buffer_length = length;
+ arm_req->generation = req->req.generation;
+ arm_req->extended_transaction_code = 0;
+ arm_req->destination_offset = addr;
+ arm_req->source_nodeid = nodeid;
+ arm_req->destination_nodeid = destid;
+ arm_req->tlabel = (flags >> 10) & 0x3f;
+ arm_req->tcode = (flags >> 4) & 0x0f;
+ arm_resp->buffer_length = 0;
+ arm_resp->response_code = rcode;
+ arm_req_resp->request = int2ptr((arm_addr->recvb) +
+ sizeof (struct arm_request_response));
+ arm_req_resp->response = int2ptr((arm_addr->recvb) +
+ sizeof (struct arm_request_response) +
+ sizeof (struct arm_request));
+ queue_complete_req(req);
+ }
+ spin_unlock(&host_info_lock);
+ return(rcode);
+}
+
+static int arm_lock (struct hpsb_host *host, int nodeid, quadlet_t *store,
+ u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, u16 flags)
+{
+ struct pending_request *req;
+ struct list_head *lh;
+ struct host_info *hi;
+ struct file_info *fi = NULL;
+ struct list_head *entry;
+ struct arm_addr *arm_addr = NULL;
+ struct arm_request *arm_req = NULL;
+ struct arm_response *arm_resp = NULL;
+ int found=0, size=0, rcode=-1;
+ quadlet_t old, new;
+ struct arm_request_response *arm_req_resp = NULL;
+
+ if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) ||
+ ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) {
+ DBGMSG("arm_lock called by node: %X "
+ "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X",
+ nodeid, (u16) ((addr >>32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF),
+ ext_tcode & 0xFF , be32_to_cpu(data));
+ } else {
+ DBGMSG("arm_lock called by node: %X "
+ "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X arg: %8.8X",
+ nodeid, (u16) ((addr >>32) & 0xFFFF), (u32) (addr & 0xFFFFFFFF),
+ ext_tcode & 0xFF , be32_to_cpu(data), be32_to_cpu(arg));
+ }
+ spin_lock(&host_info_lock);
+ hi = find_host_info(host); /* search address-entry */
+ if (hi != NULL) {
+ list_for_each(lh, &hi->file_info_list) {
+ fi = list_entry(lh, struct file_info, list);
+ entry = fi->addr_list.next;
+ while (entry != &(fi->addr_list)) {
+ arm_addr = list_entry(entry, struct arm_addr, addr_list);
+ if (((arm_addr->start) <= (addr)) &&
+ ((arm_addr->end) >= (addr+sizeof(*store)))) {
+ found = 1;
+ break;
+ }
+ entry = entry->next;
+ }
+ if (found) {
+ break;
+ }
+ }
+ }
+ rcode = -1;
+ if (!found) {
+ printk(KERN_ERR "raw1394: arm_lock FAILED addr_entry not found"
+ " -> rcode_address_error\n");
+ spin_unlock(&host_info_lock);
+ return (RCODE_ADDRESS_ERROR);
+ } else {
+ DBGMSG("arm_lock addr_entry FOUND");
+ }
+ if (rcode == -1) {
+ if (arm_addr->access_rights & ARM_LOCK) {
+ if (!(arm_addr->client_transactions & ARM_LOCK)) {
+ memcpy(&old,(arm_addr->addr_space_buffer)+(addr-(arm_addr->start)),
+ sizeof(old));
+ switch (ext_tcode) {
+ case (EXTCODE_MASK_SWAP):
+ new = data | (old & ~arg);
+ break;
+ case (EXTCODE_COMPARE_SWAP):
+ if (old == arg) {
+ new = data;
+ } else {
+ new = old;
+ }
+ break;
+ case (EXTCODE_FETCH_ADD):
+ new = cpu_to_be32(be32_to_cpu(data) + be32_to_cpu(old));
+ break;
+ case (EXTCODE_LITTLE_ADD):
+ new = cpu_to_le32(le32_to_cpu(data) + le32_to_cpu(old));
+ break;
+ case (EXTCODE_BOUNDED_ADD):
+ if (old != arg) {
+ new = cpu_to_be32(be32_to_cpu(data) +
+ be32_to_cpu(old));
+ } else {
+ new = old;
+ }
+ break;
+ case (EXTCODE_WRAP_ADD):
+ if (old != arg) {
+ new = cpu_to_be32(be32_to_cpu(data) +
+ be32_to_cpu(old));
+ } else {
+ new = data;
+ }
+ break;
+ default:
+ rcode = RCODE_TYPE_ERROR; /* function not allowed */
+ printk(KERN_ERR "raw1394: arm_lock FAILED "
+ "ext_tcode not allowed -> rcode_type_error\n");
+ break;
+ } /*switch*/
+ if (rcode == -1) {
+ DBGMSG("arm_lock -> (rcode_complete)");
+ rcode = RCODE_COMPLETE;
+ memcpy (store, &old, sizeof(*store));
+ memcpy ((arm_addr->addr_space_buffer)+
+ (addr-(arm_addr->start)),
+ &new, sizeof(*store));
+ }
+ }
+ } else {
+ rcode = RCODE_TYPE_ERROR; /* function not allowed */
+ DBGMSG("arm_lock -> rcode_type_error (access denied)");
+ }
+ }
+ if (arm_addr->notification_options & ARM_LOCK) {
+ DBGMSG("arm_lock -> entering notification-section");
+ req = __alloc_pending_request(SLAB_ATOMIC);
+ if (!req) {
+ DBGMSG("arm_lock -> rcode_conflict_error");
+ spin_unlock(&host_info_lock);
+ return(RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
+ The request may be retried */
+ }
+ size = sizeof(struct arm_request)+sizeof(struct arm_response) +
+ 3 * sizeof(*store) +
+ sizeof (struct arm_request_response); /* maximum */
+ req->data = kmalloc(size, SLAB_ATOMIC);
+ if (!(req->data)) {
+ free_pending_request(req);
+ DBGMSG("arm_lock -> rcode_conflict_error");
+ spin_unlock(&host_info_lock);
+ return(RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
+ The request may be retried */
+ }
+ req->free_data=1;
+ arm_req_resp = (struct arm_request_response *) (req->data);
+ arm_req = (struct arm_request *) ((byte_t *)(req->data) +
+ (sizeof (struct arm_request_response)));
+ arm_resp = (struct arm_response *) ((byte_t *)(arm_req) +
+ (sizeof(struct arm_request)));
+ arm_req->buffer = ((byte_t *)(arm_resp) +
+ (sizeof(struct arm_response)));
+ arm_resp->buffer = ((byte_t *)(arm_req->buffer) +
+ (2* sizeof(*store)));
+ if ((ext_tcode == EXTCODE_FETCH_ADD) ||
+ (ext_tcode == EXTCODE_LITTLE_ADD)) {
+ arm_req->buffer_length = sizeof(*store);
+ memcpy (arm_req->buffer, &data, sizeof(*store));
+
+ } else {
+ arm_req->buffer_length = 2 * sizeof(*store);
+ memcpy (arm_req->buffer, &arg, sizeof(*store));
+ memcpy (((arm_req->buffer) + sizeof(*store)),
+ &data, sizeof(*store));
+ }
+ if (rcode == RCODE_COMPLETE) {
+ arm_resp->buffer_length = sizeof(*store);
+ memcpy (arm_resp->buffer, &old, sizeof(*store));
+ } else {
+ arm_resp->buffer = NULL;
+ arm_resp->buffer_length = 0;
+ }
+ req->file_info = fi;
+ req->req.type = RAW1394_REQ_ARM;
+ req->req.generation = get_hpsb_generation(host);
+ req->req.misc = ( (((sizeof(*store)) << 16) & (0xFFFF0000)) |
+ (ARM_LOCK & 0xFF));
+ req->req.tag = arm_addr->arm_tag;
+ req->req.recvb = arm_addr->recvb;
+ req->req.length = size;
+ arm_req->generation = req->req.generation;
+ arm_req->extended_transaction_code = ext_tcode;
+ arm_req->destination_offset = addr;
+ arm_req->source_nodeid = nodeid;
+ arm_req->destination_nodeid = host->node_id;
+ arm_req->tlabel = (flags >> 10) & 0x3f;
+ arm_req->tcode = (flags >> 4) & 0x0f;
+ arm_resp->response_code = rcode;
+ arm_req_resp->request = int2ptr((arm_addr->recvb) +
+ sizeof (struct arm_request_response));
+ arm_req_resp->response = int2ptr((arm_addr->recvb) +
+ sizeof (struct arm_request_response) +
+ sizeof (struct arm_request));
+ arm_req->buffer = int2ptr((arm_addr->recvb) +
+ sizeof (struct arm_request_response) +
+ sizeof (struct arm_request) +
+ sizeof (struct arm_response));
+ arm_resp->buffer = int2ptr((arm_addr->recvb) +
+ sizeof (struct arm_request_response) +
+ sizeof (struct arm_request) +
+ sizeof (struct arm_response) +
+ 2* sizeof (*store));
+ queue_complete_req(req);
+ }
+ spin_unlock(&host_info_lock);
+ return(rcode);
+}
+
+static int arm_lock64 (struct hpsb_host *host, int nodeid, octlet_t *store,
+ u64 addr, octlet_t data, octlet_t arg, int ext_tcode, u16 flags)
+{
+ struct pending_request *req;
+ struct list_head *lh;
+ struct host_info *hi;
+ struct file_info *fi = NULL;
+ struct list_head *entry;
+ struct arm_addr *arm_addr = NULL;
+ struct arm_request *arm_req = NULL;
+ struct arm_response *arm_resp = NULL;
+ int found=0, size=0, rcode=-1;
+ octlet_t old, new;
+ struct arm_request_response *arm_req_resp = NULL;
+
+ if (((ext_tcode & 0xFF) == EXTCODE_FETCH_ADD) ||
+ ((ext_tcode & 0xFF) == EXTCODE_LITTLE_ADD)) {
+ DBGMSG("arm_lock64 called by node: %X "
+ "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X ",
+ nodeid, (u16) ((addr >>32) & 0xFFFF),
+ (u32) (addr & 0xFFFFFFFF),
+ ext_tcode & 0xFF ,
+ (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF),
+ (u32) (be64_to_cpu(data) & 0xFFFFFFFF));
+ } else {
+ DBGMSG("arm_lock64 called by node: %X "
+ "addr: %4.4x %8.8x extcode: %2.2X data: %8.8X %8.8X arg: "
+ "%8.8X %8.8X ",
+ nodeid, (u16) ((addr >>32) & 0xFFFF),
+ (u32) (addr & 0xFFFFFFFF),
+ ext_tcode & 0xFF ,
+ (u32) ((be64_to_cpu(data) >> 32) & 0xFFFFFFFF),
+ (u32) (be64_to_cpu(data) & 0xFFFFFFFF),
+ (u32) ((be64_to_cpu(arg) >> 32) & 0xFFFFFFFF),
+ (u32) (be64_to_cpu(arg) & 0xFFFFFFFF));
+ }
+ spin_lock(&host_info_lock);
+ hi = find_host_info(host); /* search addressentry in file_info's for host */
+ if (hi != NULL) {
+ list_for_each(lh, &hi->file_info_list) {
+ fi = list_entry(lh, struct file_info, list);
+ entry = fi->addr_list.next;
+ while (entry != &(fi->addr_list)) {
+ arm_addr = list_entry(entry, struct arm_addr, addr_list);
+ if (((arm_addr->start) <= (addr)) &&
+ ((arm_addr->end) >= (addr+sizeof(*store)))) {
+ found = 1;
+ break;
+ }
+ entry = entry->next;
+ }
+ if (found) {
+ break;
+ }
+ }
+ }
+ rcode = -1;
+ if (!found) {
+ printk(KERN_ERR "raw1394: arm_lock64 FAILED addr_entry not found"
+ " -> rcode_address_error\n");
+ spin_unlock(&host_info_lock);
+ return (RCODE_ADDRESS_ERROR);
+ } else {
+ DBGMSG("arm_lock64 addr_entry FOUND");
+ }
+ if (rcode == -1) {
+ if (arm_addr->access_rights & ARM_LOCK) {
+ if (!(arm_addr->client_transactions & ARM_LOCK)) {
+ memcpy(&old,(arm_addr->addr_space_buffer)+(addr-(arm_addr->start)),
+ sizeof(old));
+ switch (ext_tcode) {
+ case (EXTCODE_MASK_SWAP):
+ new = data | (old & ~arg);
+ break;
+ case (EXTCODE_COMPARE_SWAP):
+ if (old == arg) {
+ new = data;
+ } else {
+ new = old;
+ }
+ break;
+ case (EXTCODE_FETCH_ADD):
+ new = cpu_to_be64(be64_to_cpu(data) + be64_to_cpu(old));
+ break;
+ case (EXTCODE_LITTLE_ADD):
+ new = cpu_to_le64(le64_to_cpu(data) + le64_to_cpu(old));
+ break;
+ case (EXTCODE_BOUNDED_ADD):
+ if (old != arg) {
+ new = cpu_to_be64(be64_to_cpu(data) +
+ be64_to_cpu(old));
+ } else {
+ new = old;
+ }
+ break;
+ case (EXTCODE_WRAP_ADD):
+ if (old != arg) {
+ new = cpu_to_be64(be64_to_cpu(data) +
+ be64_to_cpu(old));
+ } else {
+ new = data;
+ }
+ break;
+ default:
+ printk(KERN_ERR "raw1394: arm_lock64 FAILED "
+ "ext_tcode not allowed -> rcode_type_error\n");
+ rcode = RCODE_TYPE_ERROR; /* function not allowed */
+ break;
+ } /*switch*/
+ if (rcode == -1) {
+ DBGMSG("arm_lock64 -> (rcode_complete)");
+ rcode = RCODE_COMPLETE;
+ memcpy (store, &old, sizeof(*store));
+ memcpy ((arm_addr->addr_space_buffer)+
+ (addr-(arm_addr->start)),
+ &new, sizeof(*store));
+ }
+ }
+ } else {
+ rcode = RCODE_TYPE_ERROR; /* function not allowed */
+ DBGMSG("arm_lock64 -> rcode_type_error (access denied)");
+ }
+ }
+ if (arm_addr->notification_options & ARM_LOCK) {
+ DBGMSG("arm_lock64 -> entering notification-section");
+ req = __alloc_pending_request(SLAB_ATOMIC);
+ if (!req) {
+ spin_unlock(&host_info_lock);
+ DBGMSG("arm_lock64 -> rcode_conflict_error");
+ return(RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
+ The request may be retried */
+ }
+ size = sizeof(struct arm_request)+sizeof(struct arm_response) +
+ 3 * sizeof(*store) +
+ sizeof (struct arm_request_response); /* maximum */
+ req->data = kmalloc(size, SLAB_ATOMIC);
+ if (!(req->data)) {
+ free_pending_request(req);
+ spin_unlock(&host_info_lock);
+ DBGMSG("arm_lock64 -> rcode_conflict_error");
+ return(RCODE_CONFLICT_ERROR); /* A resource conflict was detected.
+ The request may be retried */
+ }
+ req->free_data=1;
+ arm_req_resp = (struct arm_request_response *) (req->data);
+ arm_req = (struct arm_request *) ((byte_t *)(req->data) +
+ (sizeof (struct arm_request_response)));
+ arm_resp = (struct arm_response *) ((byte_t *)(arm_req) +
+ (sizeof(struct arm_request)));
+ arm_req->buffer = ((byte_t *)(arm_resp) +
+ (sizeof(struct arm_response)));
+ arm_resp->buffer = ((byte_t *)(arm_req->buffer) +
+ (2* sizeof(*store)));
+ if ((ext_tcode == EXTCODE_FETCH_ADD) ||
+ (ext_tcode == EXTCODE_LITTLE_ADD)) {
+ arm_req->buffer_length = sizeof(*store);
+ memcpy (arm_req->buffer, &data, sizeof(*store));
+
+ } else {
+ arm_req->buffer_length = 2 * sizeof(*store);
+ memcpy (arm_req->buffer, &arg, sizeof(*store));
+ memcpy (((arm_req->buffer) + sizeof(*store)),
+ &data, sizeof(*store));
+ }
+ if (rcode == RCODE_COMPLETE) {
+ arm_resp->buffer_length = sizeof(*store);
+ memcpy (arm_resp->buffer, &old, sizeof(*store));
+ } else {
+ arm_resp->buffer = NULL;
+ arm_resp->buffer_length = 0;
+ }
+ req->file_info = fi;
+ req->req.type = RAW1394_REQ_ARM;
+ req->req.generation = get_hpsb_generation(host);
+ req->req.misc = ( (((sizeof(*store)) << 16) & (0xFFFF0000)) |
+ (ARM_LOCK & 0xFF));
+ req->req.tag = arm_addr->arm_tag;
+ req->req.recvb = arm_addr->recvb;
+ req->req.length = size;
+ arm_req->generation = req->req.generation;
+ arm_req->extended_transaction_code = ext_tcode;
+ arm_req->destination_offset = addr;
+ arm_req->source_nodeid = nodeid;
+ arm_req->destination_nodeid = host->node_id;
+ arm_req->tlabel = (flags >> 10) & 0x3f;
+ arm_req->tcode = (flags >> 4) & 0x0f;
+ arm_resp->response_code = rcode;
+ arm_req_resp->request = int2ptr((arm_addr->recvb) +
+ sizeof (struct arm_request_response));
+ arm_req_resp->response = int2ptr((arm_addr->recvb) +
+ sizeof (struct arm_request_response) +
+ sizeof (struct arm_request));
+ arm_req->buffer = int2ptr((arm_addr->recvb) +
+ sizeof (struct arm_request_response) +
+ sizeof (struct arm_request) +
+ sizeof (struct arm_response));
+ arm_resp->buffer = int2ptr((arm_addr->recvb) +
+ sizeof (struct arm_request_response) +
+ sizeof (struct arm_request) +
+ sizeof (struct arm_response) +
+ 2* sizeof (*store));
+ queue_complete_req(req);
+ }
+ spin_unlock(&host_info_lock);
+ return(rcode);
+}
+
+static int arm_register(struct file_info *fi, struct pending_request *req)
+{
+ int retval;
+ struct arm_addr *addr;
+ struct list_head *lh, *lh_1, *lh_2;
+ 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) & ~(0xFFFFFFFFFFFF)) != 0) ||
+ (((req->req.address + req->req.length) & ~(0xFFFFFFFFFFFF)) != 0)) {
+ req->req.length = 0;
+ return (-EINVAL);
+ }
+ /* addr-list-entry for fileinfo */
+ addr = (struct arm_addr *)kmalloc(sizeof(struct arm_addr), SLAB_KERNEL);
+ if (!addr) {
+ req->req.length = 0;
+ return (-ENOMEM);
+ }
+ /* allocation of addr_space_buffer */
+ addr->addr_space_buffer = (u8 *)kmalloc(req->req.length,SLAB_KERNEL);
+ 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)) {
+ kfree(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(lh, &hi->file_info_list) {
+ fi_hlp = list_entry(lh, struct file_info, 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 */
+ kfree(addr->addr_space_buffer);
+ kfree(addr);
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ return (-EALREADY);
+ }
+ /* another host with valid address-entry containing same addressrange */
+ list_for_each(lh_1, &host_info_list) {
+ hi = list_entry(lh_1, struct host_info, list);
+ if (hi->host != fi->host) {
+ list_for_each(lh_2, &hi->file_info_list) {
+ fi_hlp = list_entry(lh_2, struct file_info, list);
+ entry = fi_hlp->addr_list.next;
+ while (entry != &(fi_hlp->addr_list)) {
+ arm_addr = list_entry(entry, struct arm_addr, addr_list);
+ if ( (arm_addr->start == addr->start) &&
+ (arm_addr->end == addr->end)) {
+ DBGMSG("another host ownes same "
+ "addressrange");
+ another_host = 1;
+ break;
+ }
+ entry = entry->next;
+ }
+ if (another_host) {
+ break;
+ }
+ }
+ }
+ }
+ if (another_host) {
+ DBGMSG("another hosts entry is valid -> SUCCESS");
+ if (copy_to_user(int2ptr(req->req.recvb),
+ int2ptr(&addr->start),sizeof(u64))) {
+ printk(KERN_ERR "raw1394: arm_register failed "
+ " address-range-entry is invalid -> EFAULT !!!\n");
+ kfree(addr->addr_space_buffer);
+ kfree(addr);
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ return (-EFAULT);
+ }
+ free_pending_request(req); /* immediate success or fail */
+ /* INSERT ENTRY */
+ list_add_tail(&addr->addr_list, &fi->addr_list);
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ return sizeof(struct raw1394_request);
+ }
+ retval = hpsb_register_addrspace(&raw1394_highlevel, &arm_ops, req->req.address,
+ req->req.address + req->req.length);
+ if (retval) {
+ /* INSERT ENTRY */
+ list_add_tail(&addr->addr_list, &fi->addr_list);
+ } else {
+ DBGMSG("arm_register failed errno: %d \n",retval);
+ kfree(addr->addr_space_buffer);
+ kfree(addr);
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ return (-EALREADY);
+ }
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ free_pending_request(req); /* immediate success or fail */
+ return sizeof(struct raw1394_request);
+}
+
+static int arm_unregister(struct file_info *fi, struct pending_request *req)
+{
+ int found = 0;
+ int retval = 0;
+ struct list_head *entry;
+ struct arm_addr *addr = NULL;
+ struct list_head *lh_1, *lh_2;
+ 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(lh_1, &host_info_list) {
+ hi = list_entry(lh_1, struct host_info, list);
+ if (hi->host != fi->host) {
+ list_for_each(lh_2, &hi->file_info_list) {
+ fi_hlp = list_entry(lh_2, struct file_info, 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);
+ kfree(addr->addr_space_buffer);
+ kfree(addr);
+ free_pending_request(req); /* immediate success or fail */
+ spin_unlock_irqrestore(&host_info_lock, flags);
+ return sizeof(struct raw1394_request);
+ }
+ retval = hpsb_unregister_addrspace(&raw1394_highlevel, 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);
+ kfree(addr->addr_space_buffer);
+ kfree(addr);
+ free_pending_request(req); /* immediate success or fail */
+ return sizeof(struct raw1394_request);
+}
+
+static int reset_notification(struct file_info *fi, struct pending_request *req)
+{
+ DBGMSG("reset_notification called - switch %s ",
+ (req->req.misc == RAW1394_NOTIFY_OFF)?"OFF":"ON");
+ if ((req->req.misc == RAW1394_NOTIFY_OFF) ||
+ (req->req.misc == RAW1394_NOTIFY_ON)) {
+ fi->notification=(u8)req->req.misc;
+ free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */
+ return sizeof(struct raw1394_request);
+ }
+ /* error EINVAL (22) invalid argument */
+ return (-EINVAL);
+}
+
+static int write_phypacket(struct file_info *fi, struct pending_request *req)
+{
+ struct hpsb_packet *packet = NULL;
+ int retval=0;
+ quadlet_t data;
+
+ data = be32_to_cpu((u32)req->req.sendb);
+ DBGMSG("write_phypacket called - quadlet 0x%8.8x ",data);
+ packet = hpsb_make_phypacket (fi->host, data);
+ if (!packet) return -ENOMEM;
+ req->req.length=0;
+ req->packet=packet;
+ hpsb_set_packet_complete_task(packet, (void(*)(void*))queue_complete_cb, req);
+ spin_lock_irq(&fi->reqlists_lock);
+ list_add_tail(&req->list, &fi->req_pending);
+ spin_unlock_irq(&fi->reqlists_lock);
+ packet->generation = req->req.generation;
+ retval = hpsb_send_packet(packet);
+ DBGMSG("write_phypacket send_packet called => retval: %d ",
+ retval);
+ if (! retval) {
+ req->req.error = RAW1394_ERROR_SEND_ERROR;
+ req->req.length = 0;
+ queue_complete_req(req);
+ }
+ return sizeof(struct raw1394_request);
+}
+
+static int get_config_rom(struct file_info *fi, struct pending_request *req)
+{
+ size_t return_size;
+ unsigned char rom_version;
+ int ret=sizeof(struct raw1394_request);
+ quadlet_t *data = kmalloc(req->req.length, SLAB_KERNEL);
+ int status;
+ if (!data) return -ENOMEM;
+ status = hpsb_get_config_rom(fi->host, data,
+ req->req.length, &return_size, &rom_version);
+ if (copy_to_user(int2ptr(req->req.recvb), data,
+ req->req.length))
+ ret = -EFAULT;
+ if (copy_to_user(int2ptr(req->req.tag), &return_size,
+ sizeof(return_size)))
+ ret = -EFAULT;
+ if (copy_to_user(int2ptr(req->req.address), &rom_version,
+ sizeof(rom_version)))
+ ret = -EFAULT;
+ if (copy_to_user(int2ptr(req->req.sendb), &status,
+ sizeof(status)))
+ ret = -EFAULT;
+ kfree(data);
+ if (ret >= 0) {
+ free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */
+ }
+ return ret;
+}
+
+static int update_config_rom(struct file_info *fi, struct pending_request *req)
+{
+ int ret=sizeof(struct raw1394_request);
+ quadlet_t *data = kmalloc(req->req.length, SLAB_KERNEL);
+ if (!data) return -ENOMEM;
+ if (copy_from_user(data,int2ptr(req->req.sendb),
+ req->req.length)) {
+ ret= -EFAULT;
+ } else {
+ int status = hpsb_update_config_rom(fi->host,
+ data, req->req.length,
+ (unsigned char) req->req.misc);
+ if (copy_to_user(int2ptr(req->req.recvb),
+ &status, sizeof(status)))
+ ret = -ENOMEM;
+ }
+ kfree(data);
+ if (ret >= 0) {
+ free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */
+ }
+ return ret;
+}
+
+static int state_connected(struct file_info *fi, struct pending_request *req)
+{
+ int node = req->req.address >> 48;
+
+ req->req.error = RAW1394_ERROR_NONE;
+
switch (req->req.type) {
+
+ case RAW1394_REQ_ECHO:
+ queue_complete_req(req);
+ return sizeof(struct raw1394_request);
+
+ case RAW1394_REQ_ISO_SEND:
+ return handle_iso_send(fi, req, node);
+
+ case RAW1394_REQ_ARM_REGISTER:
+ return arm_register(fi, req);
+
+ case RAW1394_REQ_ARM_UNREGISTER:
+ return arm_unregister(fi, req);
+
+ case RAW1394_REQ_RESET_NOTIFY:
+ return reset_notification(fi, req);
+
case RAW1394_REQ_ISO_LISTEN:
handle_iso_listen(fi, req);
return sizeof(struct raw1394_request);
@@ -831,21 +1909,49 @@
return sizeof(struct raw1394_request);
case RAW1394_REQ_RESET_BUS:
- hpsb_reset_bus(fi->host, LONG_RESET);
+ if (req->req.misc == RAW1394_LONG_RESET) {
+ DBGMSG("busreset called (type: LONG)");
+ hpsb_reset_bus(fi->host, LONG_RESET);
+ free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */
+ return sizeof(struct raw1394_request);
+ }
+ if (req->req.misc == RAW1394_SHORT_RESET) {
+ DBGMSG("busreset called (type: SHORT)");
+ hpsb_reset_bus(fi->host, SHORT_RESET);
+ free_pending_request(req); /* we have to free the request, because we queue no response, and therefore nobody will free it */
+ return sizeof(struct raw1394_request);
+ }
+ /* error EINVAL (22) invalid argument */
+ return (-EINVAL);
+ case RAW1394_REQ_GET_ROM:
+ return get_config_rom(fi, req);
+
+ case RAW1394_REQ_UPDATE_ROM:
+ return update_config_rom(fi, req);
+ }
+
+ if (req->req.generation != get_hpsb_generation(fi->host)) {
+ req->req.error = RAW1394_ERROR_GENERATION;
+ req->req.generation = get_hpsb_generation(fi->host);
+ req->req.length = 0;
+ queue_complete_req(req);
return sizeof(struct raw1394_request);
}
+ switch (req->req.type) {
+ case RAW1394_REQ_PHYPACKET:
+ return write_phypacket(fi, req);
+ case RAW1394_REQ_ASYNC_SEND:
+ return handle_async_send(fi, req);
+ }
+
if (req->req.length == 0) {
req->req.error = RAW1394_ERROR_INVALID_ARG;
queue_complete_req(req);
return sizeof(struct raw1394_request);
}
- if (fi->host->node_id == node) {
- return handle_local_request(fi, req, node);
- }
-
- return handle_remote_request(fi, req, node);
+ return handle_async_request(fi, req, node);
}
@@ -892,6 +1998,323 @@
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 list_head *lh;
+ struct pending_request *req;
+
+ list_for_each(lh, &fi->req_complete) {
+ req = list_entry(lh, struct pending_request, list);
+ if(req->req.type == RAW1394_REQ_RAWISO_ACTIVITY) {
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+/* put a RAWISO_ACTIVITY event in the queue, if one isn't there already */
+static void queue_rawiso_event(struct file_info *fi)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&fi->reqlists_lock, flags);
+
+ /* only one ISO activity event may be in the queue */
+ if(!__rawiso_event_in_queue(fi)) {
+ struct pending_request *req = __alloc_pending_request(SLAB_ATOMIC);
+
+ if(req) {
+ req->file_info = fi;
+ req->req.type = RAW1394_REQ_RAWISO_ACTIVITY;
+ req->req.generation = get_hpsb_generation(fi->host);
+ __queue_complete_req(req);
+ } else {
+ /* on allocation failure, signal an overflow */
+ if(fi->iso_handle) {
+ atomic_inc(&fi->iso_handle->overflows);
+ }
+ }
+ }
+ spin_unlock_irqrestore(&fi->reqlists_lock, flags);
+}
+
+static void rawiso_activity_cb(struct hpsb_iso *iso)
+{
+ unsigned long flags;
+ struct list_head *lh;
+ struct host_info *hi;
+
+ spin_lock_irqsave(&host_info_lock, flags);
+ hi = find_host_info(iso->host);
+
+ if (hi != NULL) {
+ list_for_each(lh, &hi->file_info_list) {
+ struct file_info *fi = list_entry(lh, struct file_info, list);
+ if(fi->iso_handle == iso)
+ queue_rawiso_event(fi);
+ }
+ }
+
+ spin_unlock_irqrestore(&host_info_lock, flags);
+}
+
+/* helper function - gather all the kernel iso status bits for returning to user-space */
+static void raw1394_iso_fill_status(struct hpsb_iso *iso, struct raw1394_iso_status *stat)
+{
+ stat->config.data_buf_size = iso->buf_size;
+ stat->config.buf_packets = iso->buf_packets;
+ stat->config.channel = iso->channel;
+ stat->config.speed = iso->speed;
+ stat->config.irq_interval = iso->irq_interval;
+ stat->n_packets = hpsb_iso_n_ready(iso);
+ stat->overflows = atomic_read(&iso->overflows);
+ stat->xmit_cycle = iso->xmit_cycle;
+}
+
+static int raw1394_iso_xmit_init(struct file_info *fi, void *uaddr)
+{
+ struct raw1394_iso_status stat;
+
+ 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 *uaddr)
+{
+ struct raw1394_iso_status stat;
+
+ 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.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 *uaddr)
+{
+ struct raw1394_iso_status stat;
+ struct hpsb_iso *iso = fi->iso_handle;
+
+ raw1394_iso_fill_status(fi->iso_handle, &stat);
+ if(copy_to_user(uaddr, &stat, sizeof(stat)))
+ return -EFAULT;
+
+ /* reset overflow counter */
+ atomic_set(&iso->overflows, 0);
+
+ return 0;
+}
+
+/* copy N packet_infos out of the ringbuffer into user-supplied array */
+static int raw1394_iso_recv_packets(struct file_info *fi, void *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(verify_area(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 *uaddr)
+{
+ struct raw1394_iso_packets upackets;
+ int i, rv;
+
+ if(copy_from_user(&upackets, uaddr, sizeof(upackets)))
+ return -EFAULT;
+
+ if(upackets.n_packets > hpsb_iso_n_ready(fi->iso_handle))
+ return -EINVAL;
+
+ /* ensure user-supplied buffer is accessible and big enough */
+ if(verify_area(VERIFY_READ, upackets.infos,
+ upackets.n_packets * sizeof(struct raw1394_iso_packet_info)))
+ return -EFAULT;
+
+ /* copy the infos structs in and queue the packets */
+ for(i = 0; i < upackets.n_packets; i++) {
+ struct raw1394_iso_packet_info info;
+
+ if(__copy_from_user(&info, &upackets.infos[i],
+ sizeof(struct raw1394_iso_packet_info)))
+ return -EFAULT;
+
+ rv = hpsb_iso_xmit_queue_packet(fi->iso_handle, info.offset,
+ info.len, info.tag, info.sy);
+ if(rv)
+ return rv;
+ }
+
+ return 0;
+}
+
+static void raw1394_iso_shutdown(struct file_info *fi)
+{
+ if(fi->iso_handle)
+ hpsb_iso_shutdown(fi->iso_handle);
+
+ fi->iso_handle = NULL;
+ fi->iso_state = RAW1394_ISO_INACTIVE;
+}
+
+/* mmap the rawiso xmit/recv buffer */
+static int raw1394_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct file_info *fi = file->private_data;
+
+ if(fi->iso_state == RAW1394_ISO_INACTIVE)
+ return -EINVAL;
+
+ return dma_region_mmap(&fi->iso_handle->data_buf, file, vma);
+}
+
+/* ioctl is only used for rawiso operations */
+static int raw1394_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct file_info *fi = file->private_data;
+
+ switch(fi->iso_state) {
+ case RAW1394_ISO_INACTIVE:
+ switch(cmd) {
+ case RAW1394_IOC_ISO_XMIT_INIT:
+ return raw1394_iso_xmit_init(fi, (void*) arg);
+ case RAW1394_IOC_ISO_RECV_INIT:
+ return raw1394_iso_recv_init(fi, (void*) arg);
+ default:
+ break;
+ }
+ break;
+ case RAW1394_ISO_RECV:
+ switch(cmd) {
+ case RAW1394_IOC_ISO_RECV_START: {
+ /* copy args from user-space */
+ int args[3];
+ if(copy_from_user(&args[0], (void*) arg, sizeof(args)))
+ return -EFAULT;
+ return hpsb_iso_recv_start(fi->iso_handle, args[0], args[1], args[2]);
+ }
+ case RAW1394_IOC_ISO_XMIT_RECV_STOP:
+ hpsb_iso_stop(fi->iso_handle);
+ return 0;
+ case RAW1394_IOC_ISO_RECV_LISTEN_CHANNEL:
+ return hpsb_iso_recv_listen_channel(fi->iso_handle, arg);
+ case RAW1394_IOC_ISO_RECV_UNLISTEN_CHANNEL:
+ return hpsb_iso_recv_unlisten_channel(fi->iso_handle, arg);
+ case RAW1394_IOC_ISO_RECV_SET_CHANNEL_MASK: {
+ /* copy the u64 from user-space */
+ u64 mask;
+ if(copy_from_user(&mask, (void*) arg, 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, (void*) arg);
+ case RAW1394_IOC_ISO_RECV_PACKETS:
+ return raw1394_iso_recv_packets(fi, (void*) arg);
+ case RAW1394_IOC_ISO_RECV_RELEASE_PACKETS:
+ return hpsb_iso_recv_release_packets(fi->iso_handle, arg);
+ case RAW1394_IOC_ISO_SHUTDOWN:
+ raw1394_iso_shutdown(fi);
+ return 0;
+ case RAW1394_IOC_ISO_QUEUE_ACTIVITY:
+ queue_rawiso_event(fi);
+ return 0;
+ }
+ break;
+ case RAW1394_ISO_XMIT:
+ switch(cmd) {
+ case RAW1394_IOC_ISO_XMIT_START: {
+ /* copy two ints from user-space */
+ int args[2];
+ if(copy_from_user(&args[0], (void*) arg, 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, (void*) arg);
+ case RAW1394_IOC_ISO_XMIT_PACKETS:
+ return raw1394_iso_send_packets(fi, (void*) arg);
+ case RAW1394_IOC_ISO_SHUTDOWN:
+ raw1394_iso_shutdown(fi);
+ return 0;
+ case RAW1394_IOC_ISO_QUEUE_ACTIVITY:
+ queue_rawiso_event(fi);
+ return 0;
+ }
+ break;
+ default:
+ break;
+ }
+
+ return -EINVAL;
+}
+
static unsigned int raw1394_poll(struct file *file, poll_table *pt)
{
struct file_info *fi = file->private_data;
@@ -921,6 +2344,7 @@
return -ENOMEM;
memset(fi, 0, sizeof(struct file_info));
+ fi->notification = (u8) RAW1394_NOTIFY_ON; /* busreset notification */
INIT_LIST_HEAD(&fi->list);
fi->state = opened;
@@ -929,6 +2353,7 @@
sema_init(&fi->complete_sem, 0);
spin_lock_init(&fi->reqlists_lock);
init_waitqueue_head(&fi->poll_wait_complete);
+ INIT_LIST_HEAD(&fi->addr_list);
file->private_data = fi;
@@ -940,17 +2365,82 @@
struct file_info *fi = file->private_data;
struct list_head *lh;
struct pending_request *req;
- int done = 0, i;
+ int done = 0, i, fail = 0;
+ int retval = 0;
+ struct list_head *entry;
+ struct arm_addr *addr = NULL;
+ struct list_head *lh_1, *lh_2;
+ struct host_info *hi;
+ struct file_info *fi_hlp = NULL;
+ struct arm_addr *arm_addr = NULL;
+ int another_host;
+
+ if(fi->iso_state != RAW1394_ISO_INACTIVE)
+ raw1394_iso_shutdown(fi);
for (i = 0; i < 64; i++) {
if (fi->listen_channels & (1ULL << i)) {
- hpsb_unlisten_channel(hl_handle, fi->host, i);
+ hpsb_unlisten_channel(&raw1394_highlevel, fi->host, i);
}
}
- spin_lock(&host_info_lock);
+ spin_lock_irq(&host_info_lock);
fi->listen_channels = 0;
- spin_unlock(&host_info_lock);
+ spin_unlock_irq(&host_info_lock);
+
+ fail = 0;
+ /* set address-entries invalid */
+ spin_lock_irq(&host_info_lock);
+
+ while (!list_empty(&fi->addr_list)) {
+ another_host = 0;
+ lh = fi->addr_list.next;
+ addr = list_entry(lh, struct arm_addr, addr_list);
+ /* another host with valid address-entry containing
+ same addressrange? */
+ list_for_each(lh_1, &host_info_list) {
+ hi = list_entry(lh_1, struct host_info, list);
+ if (hi->host != fi->host) {
+ list_for_each(lh_2, &hi->file_info_list) {
+ fi_hlp = list_entry(lh_2, struct file_info, 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, 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);
+ kfree(addr->addr_space_buffer);
+ kfree(addr);
+ } /* while */
+ spin_unlock_irq(&host_info_lock);
+ if (fail > 0) {
+ printk(KERN_ERR "raw1394: during addr_list-release "
+ "error(s) occurred \n");
+ }
while (!done) {
spin_lock_irq(&fi->reqlists_lock);
@@ -984,7 +2474,38 @@
return 0;
}
-static struct hpsb_highlevel_ops hl_ops = {
+
+/*** HOTPLUG STUFF **********************************************************/
+/*
+ * Export information about protocols/devices supported by this driver.
+ */
+static struct ieee1394_device_id raw1394_id_table[] = {
+ {
+ .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION,
+ .specifier_id = AVC_UNIT_SPEC_ID_ENTRY & 0xffffff,
+ .version = AVC_SW_VERSION_ENTRY & 0xffffff
+ },
+ {
+ .match_flags = IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION,
+ .specifier_id = CAMERA_UNIT_SPEC_ID_ENTRY & 0xffffff,
+ .version = CAMERA_SW_VERSION_ENTRY & 0xffffff
+ },
+ { }
+};
+
+MODULE_DEVICE_TABLE(ieee1394, raw1394_id_table);
+
+static struct hpsb_protocol_driver raw1394_driver = {
+ .name = "raw1394 Driver",
+ .id_table = raw1394_id_table,
+};
+
+
+/******************************************************************************/
+
+
+static struct hpsb_highlevel raw1394_highlevel = {
+ .name = RAW1394_DEVICE_NAME,
.add_host = add_host,
.remove_host = remove_host,
.host_reset = host_reset,
@@ -995,7 +2516,9 @@
static struct file_operations file_ops = {
.owner = THIS_MODULE,
.read = raw1394_read,
- .write = raw1394_write,
+ .write = raw1394_write,
+ .mmap = raw1394_mmap,
+ .ioctl = raw1394_ioctl,
.poll = raw1394_poll,
.open = raw1394_open,
.release = raw1394_release,
@@ -1003,35 +2526,36 @@
static int __init init_raw1394(void)
{
- hl_handle = hpsb_register_highlevel(RAW1394_DEVICE_NAME, &hl_ops);
- if (hl_handle == NULL) {
- HPSB_ERR("raw1394 failed to register with ieee1394 highlevel");
- return -ENOMEM;
- }
+ hpsb_register_highlevel(&raw1394_highlevel);
- devfs_handle = devfs_register(NULL,
- RAW1394_DEVICE_NAME, DEVFS_FL_NONE,
+ devfs_handle = devfs_register(NULL,
+ RAW1394_DEVICE_NAME, DEVFS_FL_NONE,
IEEE1394_MAJOR,
- IEEE1394_MINOR_BLOCK_RAW1394 * 16,
+ IEEE1394_MINOR_BLOCK_RAW1394 * 16,
S_IFCHR | S_IRUSR | S_IWUSR, &file_ops,
NULL);
if (ieee1394_register_chardev(IEEE1394_MINOR_BLOCK_RAW1394,
- THIS_MODULE, &file_ops)) {
+ THIS_MODULE, &file_ops)) {
HPSB_ERR("raw1394 failed to register minor device block");
- devfs_unregister(devfs_handle);
- hpsb_unregister_highlevel(hl_handle);
+ devfs_unregister(devfs_handle);
+ hpsb_unregister_highlevel(&raw1394_highlevel);
return -EBUSY;
}
- printk(KERN_INFO "raw1394: /dev/%s device initialized\n", RAW1394_DEVICE_NAME);
+
+ printk(KERN_INFO "raw1394: /dev/%s device initialized\n", RAW1394_DEVICE_NAME);
+
+ hpsb_register_protocol(&raw1394_driver);
+
return 0;
}
static void __exit cleanup_raw1394(void)
{
+ hpsb_unregister_protocol(&raw1394_driver);
ieee1394_unregister_chardev(IEEE1394_MINOR_BLOCK_RAW1394);
- devfs_unregister(devfs_handle);
- hpsb_unregister_highlevel(hl_handle);
+ devfs_unregister(devfs_handle);
+ hpsb_unregister_highlevel(&raw1394_highlevel);
}
module_init(init_raw1394);
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)