ieee1394: remove old isochronous ABI

Based on patch "the scheduled removal of RAW1394_REQ_ISO_{SEND,LISTEN}"
from Adrian Bunk, November 20 2006.

This patch also removes the underlying facilities in ohci1394 and
disables them in pcilynx.  That is, hpsb_host_driver.devctl() and
hpsb_host_driver.transmit_packet() are no longer used for iso reception
and transmission.

Since video1394 and dv1394 only work with ohci1394 and raw1394's rawiso
interface has never been implemented in pcilynx, pcilynx is now no
longer useful for isochronous applications.

raw1394 will still handle the request types but will complete the
requests with errors that indicate API version conflicts.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

1 files changed, 5 insertions, 171 deletions

diff --git a/drivers/ieee1394/raw1394.c b/drivers/ieee1394/raw1394.c
index 1dadd5a15ba..336e5ff4cfc 100644
--- a/drivers/ieee1394/raw1394.c
+++ b/drivers/ieee1394/raw1394.c
@@ -98,21 +98,6 @@ static struct hpsb_address_ops arm_ops = {
 
 static void queue_complete_cb(struct pending_request *req);
 
-#include <asm/current.h>
-static void print_old_iso_deprecation(void)
-{
-	static pid_t p;
-
-	if (p == current->pid)
-		return;
-	p = current->pid;
-	printk(KERN_WARNING "raw1394: WARNING - Program \"%s\" uses unsupported"
-	       " isochronous request types which will be removed in a next"
-	       " kernel release\n", current->comm);
-	printk(KERN_WARNING "raw1394: Update your software to use libraw1394's"
-	       " newer interface\n");
-}
-
 static struct pending_request *__alloc_pending_request(gfp_t flags)
 {
 	struct pending_request *req;
@@ -297,67 +282,6 @@ static void host_reset(struct hpsb_host *host)
 	spin_unlock_irqrestore(&host_info_lock, flags);
 }
 
-static void iso_receive(struct hpsb_host *host, int channel, quadlet_t * data,
-			size_t length)
-{
-	unsigned long flags;
-	struct host_info *hi;
-	struct file_info *fi;
-	struct pending_request *req, *req_next;
-	struct iso_block_store *ibs = NULL;
-	LIST_HEAD(reqs);
-
-	if ((atomic_read(&iso_buffer_size) + length) > iso_buffer_max) {
-		HPSB_INFO("dropped iso packet");
-		return;
-	}
-
-	spin_lock_irqsave(&host_info_lock, flags);
-	hi = find_host_info(host);
-
-	if (hi != NULL) {
-		list_for_each_entry(fi, &hi->file_info_list, list) {
-			if (!(fi->listen_channels & (1ULL << channel)))
-				continue;
-
-			req = __alloc_pending_request(GFP_ATOMIC);
-			if (!req)
-				break;
-
-			if (!ibs) {
-				ibs = kmalloc(sizeof(*ibs) + length,
-					      GFP_ATOMIC);
-				if (!ibs) {
-					kfree(req);
-					break;
-				}
-
-				atomic_add(length, &iso_buffer_size);
-				atomic_set(&ibs->refcount, 0);
-				ibs->data_size = length;
-				memcpy(ibs->data, data, length);
-			}
-
-			atomic_inc(&ibs->refcount);
-
-			req->file_info = fi;
-			req->ibs = ibs;
-			req->data = ibs->data;
-			req->req.type = RAW1394_REQ_ISO_RECEIVE;
-			req->req.generation = get_hpsb_generation(host);
-			req->req.misc = 0;
-			req->req.recvb = ptr2int(fi->iso_buffer);
-			req->req.length = min(length, fi->iso_buffer_length);
-
-			list_add_tail(&req->list, &reqs);
-		}
-	}
-	spin_unlock_irqrestore(&host_info_lock, flags);
-
-	list_for_each_entry_safe(req, req_next, &reqs, list)
-	    queue_complete_req(req);
-}
-
 static void fcp_request(struct hpsb_host *host, int nodeid, int direction,
 			int cts, u8 * data, size_t length)
 {
@@ -680,43 +604,6 @@ out_set_card:
 	return 0;
 }
 
-static void handle_iso_listen(struct file_info *fi, struct pending_request *req)
-{
-	int channel = req->req.misc;
-
-	if ((channel > 63) || (channel < -64)) {
-		req->req.error = RAW1394_ERROR_INVALID_ARG;
-	} else if (channel >= 0) {
-		/* allocate channel req.misc */
-		if (fi->listen_channels & (1ULL << channel)) {
-			req->req.error = RAW1394_ERROR_ALREADY;
-		} else {
-			if (hpsb_listen_channel
-			    (&raw1394_highlevel, fi->host, channel)) {
-				req->req.error = RAW1394_ERROR_ALREADY;
-			} else {
-				fi->listen_channels |= 1ULL << channel;
-				fi->iso_buffer = int2ptr(req->req.recvb);
-				fi->iso_buffer_length = req->req.length;
-			}
-		}
-	} else {
-		/* deallocate channel (one's complement neg) req.misc */
-		channel = ~channel;
-
-		if (fi->listen_channels & (1ULL << channel)) {
-			hpsb_unlisten_channel(&raw1394_highlevel, fi->host,
-					      channel);
-			fi->listen_channels &= ~(1ULL << channel);
-		} else {
-			req->req.error = RAW1394_ERROR_INVALID_ARG;
-		}
-	}
-
-	req->req.length = 0;
-	queue_complete_req(req);
-}
-
 static void handle_fcp_listen(struct file_info *fi, struct pending_request *req)
 {
 	if (req->req.misc) {
@@ -890,50 +777,6 @@ static int handle_async_request(struct file_info *fi,
 	return 0;
 }
 
-static int handle_iso_send(struct file_info *fi, struct pending_request *req,
-			   int channel)
-{
-	unsigned long flags;
-	struct hpsb_packet *packet;
-
-	packet = hpsb_make_isopacket(fi->host, req->req.length, channel & 0x3f,
-				     (req->req.misc >> 16) & 0x3,
-				     req->req.misc & 0xf);
-	if (!packet)
-		return -ENOMEM;
-
-	packet->speed_code = req->req.address & 0x3;
-
-	req->packet = packet;
-
-	if (copy_from_user(packet->data, int2ptr(req->req.sendb),
-			   req->req.length)) {
-		req->req.error = RAW1394_ERROR_MEMFAULT;
-		req->req.length = 0;
-		queue_complete_req(req);
-		return 0;
-	}
-
-	req->req.length = 0;
-	hpsb_set_packet_complete_task(packet,
-				      (void (*)(void *))queue_complete_req,
-				      req);
-
-	spin_lock_irqsave(&fi->reqlists_lock, flags);
-	list_add_tail(&req->list, &fi->req_pending);
-	spin_unlock_irqrestore(&fi->reqlists_lock, flags);
-
-	/* Update the generation of the packet just before sending. */
-	packet->generation = req->req.generation;
-
-	if (hpsb_send_packet(packet) < 0) {
-		req->req.error = RAW1394_ERROR_SEND_ERROR;
-		queue_complete_req(req);
-	}
-
-	return 0;
-}
-
 static int handle_async_send(struct file_info *fi, struct pending_request *req)
 {
 	unsigned long flags;
@@ -2317,10 +2160,6 @@ static int state_connected(struct file_info *fi, struct pending_request *req)
 		queue_complete_req(req);
 		return 0;
 
-	case RAW1394_REQ_ISO_SEND:
-		print_old_iso_deprecation();
-		return handle_iso_send(fi, req, node);
-
 	case RAW1394_REQ_ARM_REGISTER:
 		return arm_register(fi, req);
 
@@ -2336,9 +2175,12 @@ static int state_connected(struct file_info *fi, struct pending_request *req)
 	case RAW1394_REQ_RESET_NOTIFY:
 		return reset_notification(fi, req);
 
+	case RAW1394_REQ_ISO_SEND:
 	case RAW1394_REQ_ISO_LISTEN:
-		print_old_iso_deprecation();
-		handle_iso_listen(fi, req);
+		printk(KERN_DEBUG "raw1394: old iso ABI has been removed\n");
+		req->req.error = RAW1394_ERROR_COMPAT;
+		req->req.misc = RAW1394_KERNELAPI_VERSION;
+		queue_complete_req(req);
 		return 0;
 
 	case RAW1394_REQ_FCP_LISTEN:
@@ -2965,14 +2807,7 @@ static int raw1394_release(struct inode *inode, struct file *file)
 	if (fi->iso_state != RAW1394_ISO_INACTIVE)
 		raw1394_iso_shutdown(fi);
 
-	for (i = 0; i < 64; i++) {
-		if (fi->listen_channels & (1ULL << i)) {
-			hpsb_unlisten_channel(&raw1394_highlevel, fi->host, i);
-		}
-	}
-
 	spin_lock_irqsave(&host_info_lock, flags);
-	fi->listen_channels = 0;
 
 	fail = 0;
 	/* set address-entries invalid */
@@ -3134,7 +2969,6 @@ static struct hpsb_highlevel raw1394_highlevel = {
 	.add_host = add_host,
 	.remove_host = remove_host,
 	.host_reset = host_reset,
-	.iso_receive = iso_receive,
 	.fcp_request = fcp_request,
 };