diff options
author | Len Brown <len.brown@intel.com> | 2006-01-07 03:50:18 -0500 |
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committer | Len Brown <len.brown@intel.com> | 2006-01-07 03:50:18 -0500 |
commit | ed03f430cdc8c802652467e9097606fedc2c7abc (patch) | |
tree | 30941ec1e6f93e99358fefe18175e5dd800a4379 /drivers/ieee1394/ieee1394_core.c | |
parent | ed349a8a0a780ed27e2a765f16cee54d9b63bfee (diff) | |
parent | 6f957eaf79356a32e838f5f262ee9a60544b1d5b (diff) | |
download | op-kernel-dev-ed03f430cdc8c802652467e9097606fedc2c7abc.zip op-kernel-dev-ed03f430cdc8c802652467e9097606fedc2c7abc.tar.gz |
Pull pnpacpi into acpica branch
Diffstat (limited to 'drivers/ieee1394/ieee1394_core.c')
-rw-r--r-- | drivers/ieee1394/ieee1394_core.c | 827 |
1 files changed, 412 insertions, 415 deletions
diff --git a/drivers/ieee1394/ieee1394_core.c b/drivers/ieee1394/ieee1394_core.c index 32a1e01..25ef5a8 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; } |