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path: root/drivers/ieee1394/ieee1394_core.c
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Diffstat (limited to 'drivers/ieee1394/ieee1394_core.c')
-rw-r--r--drivers/ieee1394/ieee1394_core.c827
1 files changed, 412 insertions, 415 deletions
diff --git a/drivers/ieee1394/ieee1394_core.c b/drivers/ieee1394/ieee1394_core.c
index 32a1e016c85..25ef5a86f5f 100644
--- a/drivers/ieee1394/ieee1394_core.c
+++ b/drivers/ieee1394/ieee1394_core.c
@@ -179,34 +179,34 @@ void hpsb_free_packet(struct hpsb_packet *packet)
int hpsb_reset_bus(struct hpsb_host *host, int type)
{
- if (!host->in_bus_reset) {
- host->driver->devctl(host, RESET_BUS, type);
- return 0;
- } else {
- return 1;
- }
+ if (!host->in_bus_reset) {
+ host->driver->devctl(host, RESET_BUS, type);
+ return 0;
+ } else {
+ return 1;
+ }
}
int hpsb_bus_reset(struct hpsb_host *host)
{
- if (host->in_bus_reset) {
- HPSB_NOTICE("%s called while bus reset already in progress",
+ if (host->in_bus_reset) {
+ HPSB_NOTICE("%s called while bus reset already in progress",
__FUNCTION__);
- return 1;
- }
+ return 1;
+ }
- abort_requests(host);
- host->in_bus_reset = 1;
- host->irm_id = -1;
+ abort_requests(host);
+ host->in_bus_reset = 1;
+ host->irm_id = -1;
host->is_irm = 0;
- host->busmgr_id = -1;
+ host->busmgr_id = -1;
host->is_busmgr = 0;
host->is_cycmst = 0;
- host->node_count = 0;
- host->selfid_count = 0;
+ host->node_count = 0;
+ host->selfid_count = 0;
- return 0;
+ return 0;
}
@@ -216,150 +216,156 @@ int hpsb_bus_reset(struct hpsb_host *host)
*/
static int check_selfids(struct hpsb_host *host)
{
- int nodeid = -1;
- int rest_of_selfids = host->selfid_count;
- struct selfid *sid = (struct selfid *)host->topology_map;
- struct ext_selfid *esid;
- int esid_seq = 23;
+ int nodeid = -1;
+ int rest_of_selfids = host->selfid_count;
+ struct selfid *sid = (struct selfid *)host->topology_map;
+ struct ext_selfid *esid;
+ int esid_seq = 23;
host->nodes_active = 0;
- while (rest_of_selfids--) {
- if (!sid->extended) {
- nodeid++;
- esid_seq = 0;
+ while (rest_of_selfids--) {
+ if (!sid->extended) {
+ nodeid++;
+ esid_seq = 0;
- if (sid->phy_id != nodeid) {
- HPSB_INFO("SelfIDs failed monotony check with "
- "%d", sid->phy_id);
- return 0;
- }
+ if (sid->phy_id != nodeid) {
+ HPSB_INFO("SelfIDs failed monotony check with "
+ "%d", sid->phy_id);
+ return 0;
+ }
if (sid->link_active) {
host->nodes_active++;
if (sid->contender)
host->irm_id = LOCAL_BUS | sid->phy_id;
}
- } else {
- esid = (struct ext_selfid *)sid;
-
- if ((esid->phy_id != nodeid)
- || (esid->seq_nr != esid_seq)) {
- HPSB_INFO("SelfIDs failed monotony check with "
- "%d/%d", esid->phy_id, esid->seq_nr);
- return 0;
- }
- esid_seq++;
- }
- sid++;
- }
-
- esid = (struct ext_selfid *)(sid - 1);
- while (esid->extended) {
- if ((esid->porta == 0x2) || (esid->portb == 0x2)
- || (esid->portc == 0x2) || (esid->portd == 0x2)
- || (esid->porte == 0x2) || (esid->portf == 0x2)
- || (esid->portg == 0x2) || (esid->porth == 0x2)) {
+ } else {
+ esid = (struct ext_selfid *)sid;
+
+ if ((esid->phy_id != nodeid)
+ || (esid->seq_nr != esid_seq)) {
+ HPSB_INFO("SelfIDs failed monotony check with "
+ "%d/%d", esid->phy_id, esid->seq_nr);
+ return 0;
+ }
+ esid_seq++;
+ }
+ sid++;
+ }
+
+ esid = (struct ext_selfid *)(sid - 1);
+ while (esid->extended) {
+ if ((esid->porta == SELFID_PORT_PARENT) ||
+ (esid->portb == SELFID_PORT_PARENT) ||
+ (esid->portc == SELFID_PORT_PARENT) ||
+ (esid->portd == SELFID_PORT_PARENT) ||
+ (esid->porte == SELFID_PORT_PARENT) ||
+ (esid->portf == SELFID_PORT_PARENT) ||
+ (esid->portg == SELFID_PORT_PARENT) ||
+ (esid->porth == SELFID_PORT_PARENT)) {
HPSB_INFO("SelfIDs failed root check on "
"extended SelfID");
return 0;
- }
- esid--;
- }
+ }
+ esid--;
+ }
- sid = (struct selfid *)esid;
- if ((sid->port0 == 0x2) || (sid->port1 == 0x2) || (sid->port2 == 0x2)) {
+ sid = (struct selfid *)esid;
+ if ((sid->port0 == SELFID_PORT_PARENT) ||
+ (sid->port1 == SELFID_PORT_PARENT) ||
+ (sid->port2 == SELFID_PORT_PARENT)) {
HPSB_INFO("SelfIDs failed root check");
return 0;
- }
+ }
host->node_count = nodeid + 1;
- return 1;
+ return 1;
}
static void build_speed_map(struct hpsb_host *host, int nodecount)
{
u8 speedcap[nodecount];
u8 cldcnt[nodecount];
- u8 *map = host->speed_map;
- struct selfid *sid;
- struct ext_selfid *esid;
- int i, j, n;
-
- for (i = 0; i < (nodecount * 64); i += 64) {
- for (j = 0; j < nodecount; j++) {
- map[i+j] = IEEE1394_SPEED_MAX;
- }
- }
-
- for (i = 0; i < nodecount; i++) {
- cldcnt[i] = 0;
- }
-
- /* find direct children count and speed */
- for (sid = (struct selfid *)&host->topology_map[host->selfid_count-1],
- n = nodecount - 1;
- (void *)sid >= (void *)host->topology_map; sid--) {
- if (sid->extended) {
- esid = (struct ext_selfid *)sid;
-
- if (esid->porta == 0x3) cldcnt[n]++;
- if (esid->portb == 0x3) cldcnt[n]++;
- if (esid->portc == 0x3) cldcnt[n]++;
- if (esid->portd == 0x3) cldcnt[n]++;
- if (esid->porte == 0x3) cldcnt[n]++;
- if (esid->portf == 0x3) cldcnt[n]++;
- if (esid->portg == 0x3) cldcnt[n]++;
- if (esid->porth == 0x3) cldcnt[n]++;
+ u8 *map = host->speed_map;
+ struct selfid *sid;
+ struct ext_selfid *esid;
+ int i, j, n;
+
+ for (i = 0; i < (nodecount * 64); i += 64) {
+ for (j = 0; j < nodecount; j++) {
+ map[i+j] = IEEE1394_SPEED_MAX;
+ }
+ }
+
+ for (i = 0; i < nodecount; i++) {
+ cldcnt[i] = 0;
+ }
+
+ /* find direct children count and speed */
+ for (sid = (struct selfid *)&host->topology_map[host->selfid_count-1],
+ n = nodecount - 1;
+ (void *)sid >= (void *)host->topology_map; sid--) {
+ if (sid->extended) {
+ esid = (struct ext_selfid *)sid;
+
+ if (esid->porta == SELFID_PORT_CHILD) cldcnt[n]++;
+ if (esid->portb == SELFID_PORT_CHILD) cldcnt[n]++;
+ if (esid->portc == SELFID_PORT_CHILD) cldcnt[n]++;
+ if (esid->portd == SELFID_PORT_CHILD) cldcnt[n]++;
+ if (esid->porte == SELFID_PORT_CHILD) cldcnt[n]++;
+ if (esid->portf == SELFID_PORT_CHILD) cldcnt[n]++;
+ if (esid->portg == SELFID_PORT_CHILD) cldcnt[n]++;
+ if (esid->porth == SELFID_PORT_CHILD) cldcnt[n]++;
} else {
- if (sid->port0 == 0x3) cldcnt[n]++;
- if (sid->port1 == 0x3) cldcnt[n]++;
- if (sid->port2 == 0x3) cldcnt[n]++;
-
- speedcap[n] = sid->speed;
- n--;
- }
- }
-
- /* set self mapping */
- for (i = 0; i < nodecount; i++) {
- map[64*i + i] = speedcap[i];
- }
-
- /* fix up direct children count to total children count;
- * also fix up speedcaps for sibling and parent communication */
- for (i = 1; i < nodecount; i++) {
- for (j = cldcnt[i], n = i - 1; j > 0; j--) {
- cldcnt[i] += cldcnt[n];
- speedcap[n] = min(speedcap[n], speedcap[i]);
- n -= cldcnt[n] + 1;
- }
- }
-
- for (n = 0; n < nodecount; n++) {
- for (i = n - cldcnt[n]; i <= n; i++) {
- for (j = 0; j < (n - cldcnt[n]); j++) {
- map[j*64 + i] = map[i*64 + j] =
- min(map[i*64 + j], speedcap[n]);
- }
- for (j = n + 1; j < nodecount; j++) {
- map[j*64 + i] = map[i*64 + j] =
- min(map[i*64 + j], speedcap[n]);
- }
- }
- }
+ if (sid->port0 == SELFID_PORT_CHILD) cldcnt[n]++;
+ if (sid->port1 == SELFID_PORT_CHILD) cldcnt[n]++;
+ if (sid->port2 == SELFID_PORT_CHILD) cldcnt[n]++;
+
+ speedcap[n] = sid->speed;
+ n--;
+ }
+ }
+
+ /* set self mapping */
+ for (i = 0; i < nodecount; i++) {
+ map[64*i + i] = speedcap[i];
+ }
+
+ /* fix up direct children count to total children count;
+ * also fix up speedcaps for sibling and parent communication */
+ for (i = 1; i < nodecount; i++) {
+ for (j = cldcnt[i], n = i - 1; j > 0; j--) {
+ cldcnt[i] += cldcnt[n];
+ speedcap[n] = min(speedcap[n], speedcap[i]);
+ n -= cldcnt[n] + 1;
+ }
+ }
+
+ for (n = 0; n < nodecount; n++) {
+ for (i = n - cldcnt[n]; i <= n; i++) {
+ for (j = 0; j < (n - cldcnt[n]); j++) {
+ map[j*64 + i] = map[i*64 + j] =
+ min(map[i*64 + j], speedcap[n]);
+ }
+ for (j = n + 1; j < nodecount; j++) {
+ map[j*64 + i] = map[i*64 + j] =
+ min(map[i*64 + j], speedcap[n]);
+ }
+ }
+ }
}
void hpsb_selfid_received(struct hpsb_host *host, quadlet_t sid)
{
- if (host->in_bus_reset) {
- HPSB_VERBOSE("Including SelfID 0x%x", sid);
- host->topology_map[host->selfid_count++] = sid;
- } else {
- HPSB_NOTICE("Spurious SelfID packet (0x%08x) received from bus %d",
+ if (host->in_bus_reset) {
+ HPSB_VERBOSE("Including SelfID 0x%x", sid);
+ host->topology_map[host->selfid_count++] = sid;
+ } else {
+ HPSB_NOTICE("Spurious SelfID packet (0x%08x) received from bus %d",
sid, NODEID_TO_BUS(host->node_id));
- }
+ }
}
void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot)
@@ -367,50 +373,50 @@ void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot)
if (!host->in_bus_reset)
HPSB_NOTICE("SelfID completion called outside of bus reset!");
- host->node_id = LOCAL_BUS | phyid;
- host->is_root = isroot;
+ host->node_id = LOCAL_BUS | phyid;
+ host->is_root = isroot;
- if (!check_selfids(host)) {
- if (host->reset_retries++ < 20) {
- /* selfid stage did not complete without error */
- HPSB_NOTICE("Error in SelfID stage, resetting");
+ if (!check_selfids(host)) {
+ if (host->reset_retries++ < 20) {
+ /* selfid stage did not complete without error */
+ HPSB_NOTICE("Error in SelfID stage, resetting");
host->in_bus_reset = 0;
/* this should work from ohci1394 now... */
- hpsb_reset_bus(host, LONG_RESET);
- return;
- } else {
- HPSB_NOTICE("Stopping out-of-control reset loop");
- HPSB_NOTICE("Warning - topology map and speed map will not be valid");
+ hpsb_reset_bus(host, LONG_RESET);
+ return;
+ } else {
+ HPSB_NOTICE("Stopping out-of-control reset loop");
+ HPSB_NOTICE("Warning - topology map and speed map will not be valid");
host->reset_retries = 0;
- }
- } else {
+ }
+ } else {
host->reset_retries = 0;
- build_speed_map(host, host->node_count);
- }
+ build_speed_map(host, host->node_count);
+ }
HPSB_VERBOSE("selfid_complete called with successful SelfID stage "
"... irm_id: 0x%X node_id: 0x%X",host->irm_id,host->node_id);
- /* irm_id is kept up to date by check_selfids() */
- if (host->irm_id == host->node_id) {
- host->is_irm = 1;
- } else {
- host->is_busmgr = 0;
- host->is_irm = 0;
- }
+ /* irm_id is kept up to date by check_selfids() */
+ if (host->irm_id == host->node_id) {
+ host->is_irm = 1;
+ } else {
+ host->is_busmgr = 0;
+ host->is_irm = 0;
+ }
- if (isroot) {
+ if (isroot) {
host->driver->devctl(host, ACT_CYCLE_MASTER, 1);
host->is_cycmst = 1;
}
atomic_inc(&host->generation);
host->in_bus_reset = 0;
- highlevel_host_reset(host);
+ highlevel_host_reset(host);
}
void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet,
- int ackcode)
+ int ackcode)
{
unsigned long flags;
@@ -457,6 +463,7 @@ void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet,
int hpsb_send_phy_config(struct hpsb_host *host, int rootid, int gapcnt)
{
struct hpsb_packet *packet;
+ quadlet_t d = 0;
int retval = 0;
if (rootid >= ALL_NODES || rootid < -1 || gapcnt > 0x3f || gapcnt < -1 ||
@@ -466,26 +473,16 @@ int hpsb_send_phy_config(struct hpsb_host *host, int rootid, int gapcnt)
return -EINVAL;
}
- packet = hpsb_alloc_packet(0);
- if (!packet)
- return -ENOMEM;
-
- packet->host = host;
- packet->header_size = 8;
- packet->data_size = 0;
- packet->expect_response = 0;
- packet->no_waiter = 0;
- packet->type = hpsb_raw;
- packet->header[0] = 0;
if (rootid != -1)
- packet->header[0] |= rootid << 24 | 1 << 23;
+ d |= PHYPACKET_PHYCONFIG_R | rootid << PHYPACKET_PORT_SHIFT;
if (gapcnt != -1)
- packet->header[0] |= gapcnt << 16 | 1 << 22;
+ d |= PHYPACKET_PHYCONFIG_T | gapcnt << PHYPACKET_GAPCOUNT_SHIFT;
- packet->header[1] = ~packet->header[0];
+ packet = hpsb_make_phypacket(host, d);
+ if (!packet)
+ return -ENOMEM;
packet->generation = get_hpsb_generation(host);
-
retval = hpsb_send_packet_and_wait(packet);
hpsb_free_packet(packet);
@@ -510,13 +507,13 @@ int hpsb_send_packet(struct hpsb_packet *packet)
{
struct hpsb_host *host = packet->host;
- if (host->is_shutdown)
+ if (host->is_shutdown)
return -EINVAL;
if (host->in_bus_reset ||
(packet->generation != get_hpsb_generation(host)))
- return -EAGAIN;
+ return -EAGAIN;
- packet->state = hpsb_queued;
+ packet->state = hpsb_queued;
/* This just seems silly to me */
WARN_ON(packet->no_waiter && packet->expect_response);
@@ -530,42 +527,42 @@ int hpsb_send_packet(struct hpsb_packet *packet)
skb_queue_tail(&host->pending_packet_queue, packet->skb);
}
- if (packet->node_id == host->node_id) {
+ if (packet->node_id == host->node_id) {
/* it is a local request, so handle it locally */
- quadlet_t *data;
- size_t size = packet->data_size + packet->header_size;
+ quadlet_t *data;
+ size_t size = packet->data_size + packet->header_size;
- data = kmalloc(size, GFP_ATOMIC);
- if (!data) {
- HPSB_ERR("unable to allocate memory for concatenating header and data");
- return -ENOMEM;
- }
+ data = kmalloc(size, GFP_ATOMIC);
+ if (!data) {
+ HPSB_ERR("unable to allocate memory for concatenating header and data");
+ return -ENOMEM;
+ }
- memcpy(data, packet->header, packet->header_size);
+ memcpy(data, packet->header, packet->header_size);
- if (packet->data_size)
+ if (packet->data_size)
memcpy(((u8*)data) + packet->header_size, packet->data, packet->data_size);
- dump_packet("send packet local", packet->header, packet->header_size, -1);
+ dump_packet("send packet local", packet->header, packet->header_size, -1);
- hpsb_packet_sent(host, packet, packet->expect_response ? ACK_PENDING : ACK_COMPLETE);
- hpsb_packet_received(host, data, size, 0);
+ hpsb_packet_sent(host, packet, packet->expect_response ? ACK_PENDING : ACK_COMPLETE);
+ hpsb_packet_received(host, data, size, 0);
- kfree(data);
+ kfree(data);
- return 0;
- }
+ return 0;
+ }
- if (packet->type == hpsb_async && packet->node_id != ALL_NODES) {
- packet->speed_code =
- host->speed_map[NODEID_TO_NODE(host->node_id) * 64
- + NODEID_TO_NODE(packet->node_id)];
- }
+ if (packet->type == hpsb_async && packet->node_id != ALL_NODES) {
+ packet->speed_code =
+ host->speed_map[NODEID_TO_NODE(host->node_id) * 64
+ + NODEID_TO_NODE(packet->node_id)];
+ }
- dump_packet("send packet", packet->header, packet->header_size, packet->speed_code);
+ dump_packet("send packet", packet->header, packet->header_size, packet->speed_code);
- return host->driver->transmit_packet(host, packet);
+ return host->driver->transmit_packet(host, packet);
}
/* We could just use complete() directly as the packet complete
@@ -593,81 +590,81 @@ int hpsb_send_packet_and_wait(struct hpsb_packet *packet)
static void send_packet_nocare(struct hpsb_packet *packet)
{
- if (hpsb_send_packet(packet) < 0) {
- hpsb_free_packet(packet);
- }
+ if (hpsb_send_packet(packet) < 0) {
+ hpsb_free_packet(packet);
+ }
}
static void handle_packet_response(struct hpsb_host *host, int tcode,
quadlet_t *data, size_t size)
{
- struct hpsb_packet *packet = NULL;
+ struct hpsb_packet *packet = NULL;
struct sk_buff *skb;
- int tcode_match = 0;
- int tlabel;
- unsigned long flags;
+ int tcode_match = 0;
+ int tlabel;
+ unsigned long flags;
- tlabel = (data[0] >> 10) & 0x3f;
+ tlabel = (data[0] >> 10) & 0x3f;
spin_lock_irqsave(&host->pending_packet_queue.lock, flags);
skb_queue_walk(&host->pending_packet_queue, skb) {
packet = (struct hpsb_packet *)skb->data;
- if ((packet->tlabel == tlabel)
- && (packet->node_id == (data[1] >> 16))){
- break;
- }
+ if ((packet->tlabel == tlabel)
+ && (packet->node_id == (data[1] >> 16))){
+ break;
+ }
packet = NULL;
- }
+ }
if (packet == NULL) {
- HPSB_DEBUG("unsolicited response packet received - no tlabel match");
- dump_packet("contents", data, 16, -1);
+ HPSB_DEBUG("unsolicited response packet received - no tlabel match");
+ dump_packet("contents", data, 16, -1);
spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
- return;
- }
+ return;
+ }
- switch (packet->tcode) {
- case TCODE_WRITEQ:
- case TCODE_WRITEB:
- if (tcode != TCODE_WRITE_RESPONSE)
+ switch (packet->tcode) {
+ case TCODE_WRITEQ:
+ case TCODE_WRITEB:
+ if (tcode != TCODE_WRITE_RESPONSE)
break;
tcode_match = 1;
memcpy(packet->header, data, 12);
- break;
- case TCODE_READQ:
- if (tcode != TCODE_READQ_RESPONSE)
+ break;
+ case TCODE_READQ:
+ if (tcode != TCODE_READQ_RESPONSE)
break;
tcode_match = 1;
memcpy(packet->header, data, 16);
- break;
- case TCODE_READB:
- if (tcode != TCODE_READB_RESPONSE)
+ break;
+ case TCODE_READB:
+ if (tcode != TCODE_READB_RESPONSE)
break;
tcode_match = 1;
BUG_ON(packet->skb->len - sizeof(*packet) < size - 16);
memcpy(packet->header, data, 16);
memcpy(packet->data, data + 4, size - 16);
- break;
- case TCODE_LOCK_REQUEST:
- if (tcode != TCODE_LOCK_RESPONSE)
+ break;
+ case TCODE_LOCK_REQUEST:
+ if (tcode != TCODE_LOCK_RESPONSE)
break;
tcode_match = 1;
size = min((size - 16), (size_t)8);
BUG_ON(packet->skb->len - sizeof(*packet) < size);
memcpy(packet->header, data, 16);
memcpy(packet->data, data + 4, size);
- break;
- }
+ break;
+ }
- if (!tcode_match) {
+ if (!tcode_match) {
spin_unlock_irqrestore(&host->pending_packet_queue.lock, flags);
- HPSB_INFO("unsolicited response packet received - tcode mismatch");
- dump_packet("contents", data, 16, -1);
- return;
- }
+ HPSB_INFO("unsolicited response packet received - tcode mismatch");
+ dump_packet("contents", data, 16, -1);
+ return;
+ }
__skb_unlink(skb, &host->pending_packet_queue);
@@ -686,27 +683,27 @@ static void handle_packet_response(struct hpsb_host *host, int tcode,
static struct hpsb_packet *create_reply_packet(struct hpsb_host *host,
quadlet_t *data, size_t dsize)
{
- struct hpsb_packet *p;
+ struct hpsb_packet *p;
- p = hpsb_alloc_packet(dsize);
- if (unlikely(p == NULL)) {
- /* FIXME - send data_error response */
- return NULL;
- }
+ p = hpsb_alloc_packet(dsize);
+ if (unlikely(p == NULL)) {
+ /* FIXME - send data_error response */
+ return NULL;
+ }
- p->type = hpsb_async;
- p->state = hpsb_unused;
- p->host = host;
- p->node_id = data[1] >> 16;
- p->tlabel = (data[0] >> 10) & 0x3f;
- p->no_waiter = 1;
+ p->type = hpsb_async;
+ p->state = hpsb_unused;
+ p->host = host;
+ p->node_id = data[1] >> 16;
+ p->tlabel = (data[0] >> 10) & 0x3f;
+ p->no_waiter = 1;
p->generation = get_hpsb_generation(host);
if (dsize % 4)
p->data[dsize / 4] = 0;
- return p;
+ return p;
}
#define PREP_ASYNC_HEAD_RCODE(tc) \
@@ -717,7 +714,7 @@ static struct hpsb_packet *create_reply_packet(struct hpsb_host *host,
packet->header[2] = 0
static void fill_async_readquad_resp(struct hpsb_packet *packet, int rcode,
- quadlet_t data)
+ quadlet_t data)
{
PREP_ASYNC_HEAD_RCODE(TCODE_READQ_RESPONSE);
packet->header[3] = data;
@@ -726,7 +723,7 @@ static void fill_async_readquad_resp(struct hpsb_packet *packet, int rcode,
}
static void fill_async_readblock_resp(struct hpsb_packet *packet, int rcode,
- int length)
+ int length)
{
if (rcode != RCODE_COMPLETE)
length = 0;
@@ -746,7 +743,7 @@ static void fill_async_write_resp(struct hpsb_packet *packet, int rcode)
}
static void fill_async_lock_resp(struct hpsb_packet *packet, int rcode, int extcode,
- int length)
+ int length)
{
if (rcode != RCODE_COMPLETE)
length = 0;
@@ -758,184 +755,184 @@ static void fill_async_lock_resp(struct hpsb_packet *packet, int rcode, int extc
}
#define PREP_REPLY_PACKET(length) \
- packet = create_reply_packet(host, data, length); \
- if (packet == NULL) break
+ packet = create_reply_packet(host, data, length); \
+ if (packet == NULL) break
static void handle_incoming_packet(struct hpsb_host *host, int tcode,
quadlet_t *data, size_t size, int write_acked)
{
- struct hpsb_packet *packet;
- int length, rcode, extcode;
- quadlet_t buffer;
- nodeid_t source = data[1] >> 16;
- nodeid_t dest = data[0] >> 16;
- u16 flags = (u16) data[0];
- u64 addr;
-
- /* big FIXME - no error checking is done for an out of bounds length */
-
- switch (tcode) {
- case TCODE_WRITEQ:
- addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
- rcode = highlevel_write(host, source, dest, data+3,
+ struct hpsb_packet *packet;
+ int length, rcode, extcode;
+ quadlet_t buffer;
+ nodeid_t source = data[1] >> 16;
+ nodeid_t dest = data[0] >> 16;
+ u16 flags = (u16) data[0];
+ u64 addr;
+
+ /* big FIXME - no error checking is done for an out of bounds length */
+
+ switch (tcode) {
+ case TCODE_WRITEQ:
+ addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
+ rcode = highlevel_write(host, source, dest, data+3,
addr, 4, flags);
- if (!write_acked
- && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
- && (rcode >= 0)) {
- /* not a broadcast write, reply */
- PREP_REPLY_PACKET(0);
- fill_async_write_resp(packet, rcode);
- send_packet_nocare(packet);
- }
- break;
-
- case TCODE_WRITEB:
- addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
- rcode = highlevel_write(host, source, dest, data+4,
+ if (!write_acked
+ && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
+ && (rcode >= 0)) {
+ /* not a broadcast write, reply */
+ PREP_REPLY_PACKET(0);
+ fill_async_write_resp(packet, rcode);
+ send_packet_nocare(packet);
+ }
+ break;
+
+ case TCODE_WRITEB:
+ addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
+ rcode = highlevel_write(host, source, dest, data+4,
addr, data[3]>>16, flags);
- if (!write_acked
- && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
- && (rcode >= 0)) {
- /* not a broadcast write, reply */
- PREP_REPLY_PACKET(0);
- fill_async_write_resp(packet, rcode);
- send_packet_nocare(packet);
- }
- break;
-
- case TCODE_READQ:
- addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
- rcode = highlevel_read(host, source, &buffer, addr, 4, flags);
-
- if (rcode >= 0) {
- PREP_REPLY_PACKET(0);
- fill_async_readquad_resp(packet, rcode, buffer);
- send_packet_nocare(packet);
- }
- break;
-
- case TCODE_READB:
- length = data[3] >> 16;
- PREP_REPLY_PACKET(length);
-
- addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
- rcode = highlevel_read(host, source, packet->data, addr,
- length, flags);
-
- if (rcode >= 0) {
- fill_async_readblock_resp(packet, rcode, length);
- send_packet_nocare(packet);
- } else {
- hpsb_free_packet(packet);
- }
- break;
-
- case TCODE_LOCK_REQUEST:
- length = data[3] >> 16;
- extcode = data[3] & 0xffff;
- addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
-
- PREP_REPLY_PACKET(8);
-
- if ((extcode == 0) || (extcode >= 7)) {
- /* let switch default handle error */
- length = 0;
- }
-
- switch (length) {
- case 4:
- rcode = highlevel_lock(host, source, packet->data, addr,
- data[4], 0, extcode,flags);
- fill_async_lock_resp(packet, rcode, extcode, 4);
- break;
- case 8:
- if ((extcode != EXTCODE_FETCH_ADD)
- && (extcode != EXTCODE_LITTLE_ADD)) {
- rcode = highlevel_lock(host, source,
- packet->data, addr,
- data[5], data[4],
- extcode, flags);
- fill_async_lock_resp(packet, rcode, extcode, 4);
- } else {
- rcode = highlevel_lock64(host, source,
- (octlet_t *)packet->data, addr,
- *(octlet_t *)(data + 4), 0ULL,
- extcode, flags);
- fill_async_lock_resp(packet, rcode, extcode, 8);
- }
- break;
- case 16:
- rcode = highlevel_lock64(host, source,
- (octlet_t *)packet->data, addr,
- *(octlet_t *)(data + 6),
- *(octlet_t *)(data + 4),
- extcode, flags);
- fill_async_lock_resp(packet, rcode, extcode, 8);
- break;
- default:
- rcode = RCODE_TYPE_ERROR;
- fill_async_lock_resp(packet, rcode,
- extcode, 0);
- }
-
- if (rcode >= 0) {
- send_packet_nocare(packet);
- } else {
- hpsb_free_packet(packet);
- }
- break;
- }
+ if (!write_acked
+ && (NODEID_TO_NODE(data[0] >> 16) != NODE_MASK)
+ && (rcode >= 0)) {
+ /* not a broadcast write, reply */
+ PREP_REPLY_PACKET(0);
+ fill_async_write_resp(packet, rcode);
+ send_packet_nocare(packet);
+ }
+ break;
+
+ case TCODE_READQ:
+ addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
+ rcode = highlevel_read(host, source, &buffer, addr, 4, flags);
+
+ if (rcode >= 0) {
+ PREP_REPLY_PACKET(0);
+ fill_async_readquad_resp(packet, rcode, buffer);
+ send_packet_nocare(packet);
+ }
+ break;
+
+ case TCODE_READB:
+ length = data[3] >> 16;
+ PREP_REPLY_PACKET(length);
+
+ addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
+ rcode = highlevel_read(host, source, packet->data, addr,
+ length, flags);
+
+ if (rcode >= 0) {
+ fill_async_readblock_resp(packet, rcode, length);
+ send_packet_nocare(packet);
+ } else {
+ hpsb_free_packet(packet);
+ }
+ break;
+
+ case TCODE_LOCK_REQUEST:
+ length = data[3] >> 16;
+ extcode = data[3] & 0xffff;
+ addr = (((u64)(data[1] & 0xffff)) << 32) | data[2];
+
+ PREP_REPLY_PACKET(8);
+
+ if ((extcode == 0) || (extcode >= 7)) {
+ /* let switch default handle error */
+ length = 0;
+ }
+
+ switch (length) {
+ case 4:
+ rcode = highlevel_lock(host, source, packet->data, addr,
+ data[4], 0, extcode,flags);
+ fill_async_lock_resp(packet, rcode, extcode, 4);
+ break;
+ case 8:
+ if ((extcode != EXTCODE_FETCH_ADD)
+ && (extcode != EXTCODE_LITTLE_ADD)) {
+ rcode = highlevel_lock(host, source,
+ packet->data, addr,
+ data[5], data[4],
+ extcode, flags);
+ fill_async_lock_resp(packet, rcode, extcode, 4);
+ } else {
+ rcode = highlevel_lock64(host, source,
+ (octlet_t *)packet->data, addr,
+ *(octlet_t *)(data + 4), 0ULL,
+ extcode, flags);
+ fill_async_lock_resp(packet, rcode, extcode, 8);
+ }
+ break;
+ case 16:
+ rcode = highlevel_lock64(host, source,
+ (octlet_t *)packet->data, addr,
+ *(octlet_t *)(data + 6),
+ *(octlet_t *)(data + 4),
+ extcode, flags);
+ fill_async_lock_resp(packet, rcode, extcode, 8);
+ break;
+ default:
+ rcode = RCODE_TYPE_ERROR;
+ fill_async_lock_resp(packet, rcode,
+ extcode, 0);
+ }
+
+ if (rcode >= 0) {
+ send_packet_nocare(packet);
+ } else {
+ hpsb_free_packet(packet);
+ }
+ break;
+ }
}
#undef PREP_REPLY_PACKET
void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size,
- int write_acked)
+ int write_acked)
{
- int tcode;
-
- if (host->in_bus_reset) {
- HPSB_INFO("received packet during reset; ignoring");
- return;
- }
-
- dump_packet("received packet", data, size, -1);
-
- tcode = (data[0] >> 4) & 0xf;
-
- switch (tcode) {
- case TCODE_WRITE_RESPONSE:
- case TCODE_READQ_RESPONSE:
- case TCODE_READB_RESPONSE:
- case TCODE_LOCK_RESPONSE:
- handle_packet_response(host, tcode, data, size);
- break;
-
- case TCODE_WRITEQ:
- case TCODE_WRITEB:
- case TCODE_READQ:
- case TCODE_READB:
- case TCODE_LOCK_REQUEST:
- handle_incoming_packet(host, tcode, data, size, write_acked);
- break;
-
-
- case TCODE_ISO_DATA:
- highlevel_iso_receive(host, data, size);
- break;
-
- case TCODE_CYCLE_START:
- /* simply ignore this packet if it is passed on */
- break;
-
- default:
- HPSB_NOTICE("received packet with bogus transaction code %d",
- tcode);
- break;
- }
+ int tcode;
+
+ if (host->in_bus_reset) {
+ HPSB_INFO("received packet during reset; ignoring");
+ return;
+ }
+
+ dump_packet("received packet", data, size, -1);
+
+ tcode = (data[0] >> 4) & 0xf;
+
+ switch (tcode) {
+ case TCODE_WRITE_RESPONSE:
+ case TCODE_READQ_RESPONSE:
+ case TCODE_READB_RESPONSE:
+ case TCODE_LOCK_RESPONSE:
+ handle_packet_response(host, tcode, data, size);
+ break;
+
+ case TCODE_WRITEQ:
+ case TCODE_WRITEB:
+ case TCODE_READQ:
+ case TCODE_READB:
+ case TCODE_LOCK_REQUEST:
+ handle_incoming_packet(host, tcode, data, size, write_acked);
+ break;
+
+
+ case TCODE_ISO_DATA:
+ highlevel_iso_receive(host, data, size);
+ break;
+
+ case TCODE_CYCLE_START:
+ /* simply ignore this packet if it is passed on */
+ break;
+
+ default:
+ HPSB_NOTICE("received packet with bogus transaction code %d",
+ tcode);
+ break;
+ }
}
@@ -1030,10 +1027,10 @@ static int hpsbpkt_thread(void *__hi)
daemonize("khpsbpkt");
+ current->flags |= PF_NOFREEZE;
+
while (1) {
if (down_interruptible(&khpsbpkt_sig)) {
- if (try_to_freeze())
- continue;
printk("khpsbpkt: received unexpected signal?!\n" );
break;
}
@@ -1129,7 +1126,7 @@ static int __init ieee1394_init(void)
nodemgr implements functionality required of ieee1394a-2000
IRMs */
hpsb_disable_irm = 1;
-
+
return 0;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-25 16:02:51 +0000