diff options
Diffstat (limited to 'drivers/ieee1394')
| -rw-r--r-- | drivers/ieee1394/ieee1394_transactions.c | 388 |
1 files changed, 195 insertions, 193 deletions
diff --git a/drivers/ieee1394/ieee1394_transactions.c b/drivers/ieee1394/ieee1394_transactions.c index 81b983c7a7d0..3fe2f6c4a253 100644 --- a/drivers/ieee1394/ieee1394_transactions.c +++ b/drivers/ieee1394/ieee1394_transactions.c @@ -24,7 +24,6 @@ #include "nodemgr.h" #include "ieee1394_transactions.h" - #define PREP_ASYNC_HEAD_ADDRESS(tc) \ packet->tcode = tc; \ packet->header[0] = (packet->node_id << 16) | (packet->tlabel << 10) \ @@ -32,80 +31,82 @@ packet->header[1] = (packet->host->node_id << 16) | (addr >> 32); \ packet->header[2] = addr & 0xffffffff - static void fill_async_readquad(struct hpsb_packet *packet, u64 addr) { - PREP_ASYNC_HEAD_ADDRESS(TCODE_READQ); - packet->header_size = 12; - packet->data_size = 0; - packet->expect_response = 1; + PREP_ASYNC_HEAD_ADDRESS(TCODE_READQ); + packet->header_size = 12; + packet->data_size = 0; + packet->expect_response = 1; } -static void fill_async_readblock(struct hpsb_packet *packet, u64 addr, int length) +static void fill_async_readblock(struct hpsb_packet *packet, u64 addr, + int length) { - PREP_ASYNC_HEAD_ADDRESS(TCODE_READB); - packet->header[3] = length << 16; - packet->header_size = 16; - packet->data_size = 0; - packet->expect_response = 1; + PREP_ASYNC_HEAD_ADDRESS(TCODE_READB); + packet->header[3] = length << 16; + packet->header_size = 16; + packet->data_size = 0; + packet->expect_response = 1; } -static void fill_async_writequad(struct hpsb_packet *packet, u64 addr, quadlet_t data) +static void fill_async_writequad(struct hpsb_packet *packet, u64 addr, + quadlet_t data) { - PREP_ASYNC_HEAD_ADDRESS(TCODE_WRITEQ); - packet->header[3] = data; - packet->header_size = 16; - packet->data_size = 0; - packet->expect_response = 1; + PREP_ASYNC_HEAD_ADDRESS(TCODE_WRITEQ); + packet->header[3] = data; + packet->header_size = 16; + packet->data_size = 0; + packet->expect_response = 1; } -static void fill_async_writeblock(struct hpsb_packet *packet, u64 addr, int length) +static void fill_async_writeblock(struct hpsb_packet *packet, u64 addr, + int length) { - PREP_ASYNC_HEAD_ADDRESS(TCODE_WRITEB); - packet->header[3] = length << 16; - packet->header_size = 16; - packet->expect_response = 1; - packet->data_size = length + (length % 4 ? 4 - (length % 4) : 0); + PREP_ASYNC_HEAD_ADDRESS(TCODE_WRITEB); + packet->header[3] = length << 16; + packet->header_size = 16; + packet->expect_response = 1; + packet->data_size = length + (length % 4 ? 4 - (length % 4) : 0); } static void fill_async_lock(struct hpsb_packet *packet, u64 addr, int extcode, - int length) + int length) { - PREP_ASYNC_HEAD_ADDRESS(TCODE_LOCK_REQUEST); - packet->header[3] = (length << 16) | extcode; - packet->header_size = 16; - packet->data_size = length; - packet->expect_response = 1; + PREP_ASYNC_HEAD_ADDRESS(TCODE_LOCK_REQUEST); + packet->header[3] = (length << 16) | extcode; + packet->header_size = 16; + packet->data_size = length; + packet->expect_response = 1; } static void fill_iso_packet(struct hpsb_packet *packet, int length, int channel, - int tag, int sync) + int tag, int sync) { - packet->header[0] = (length << 16) | (tag << 14) | (channel << 8) - | (TCODE_ISO_DATA << 4) | sync; + packet->header[0] = (length << 16) | (tag << 14) | (channel << 8) + | (TCODE_ISO_DATA << 4) | sync; - packet->header_size = 4; - packet->data_size = length; - packet->type = hpsb_iso; - packet->tcode = TCODE_ISO_DATA; + packet->header_size = 4; + packet->data_size = length; + packet->type = hpsb_iso; + packet->tcode = TCODE_ISO_DATA; } static void fill_phy_packet(struct hpsb_packet *packet, quadlet_t data) { - packet->header[0] = data; - packet->header[1] = ~data; - packet->header_size = 8; - packet->data_size = 0; - packet->expect_response = 0; - packet->type = hpsb_raw; /* No CRC added */ - packet->speed_code = IEEE1394_SPEED_100; /* Force speed to be 100Mbps */ + packet->header[0] = data; + packet->header[1] = ~data; + packet->header_size = 8; + packet->data_size = 0; + packet->expect_response = 0; + packet->type = hpsb_raw; /* No CRC added */ + packet->speed_code = IEEE1394_SPEED_100; /* Force speed to be 100Mbps */ } static void fill_async_stream_packet(struct hpsb_packet *packet, int length, int channel, int tag, int sync) { packet->header[0] = (length << 16) | (tag << 14) | (channel << 8) - | (TCODE_STREAM_DATA << 4) | sync; + | (TCODE_STREAM_DATA << 4) | sync; packet->header_size = 4; packet->data_size = length; @@ -172,99 +173,96 @@ int hpsb_get_tlabel(struct hpsb_packet *packet) */ void hpsb_free_tlabel(struct hpsb_packet *packet) { - unsigned long flags; + unsigned long flags; struct hpsb_tlabel_pool *tp; tp = &packet->host->tpool[packet->node_id & NODE_MASK]; BUG_ON(packet->tlabel > 63 || packet->tlabel < 0); - spin_lock_irqsave(&tp->lock, flags); + spin_lock_irqsave(&tp->lock, flags); BUG_ON(!test_and_clear_bit(packet->tlabel, tp->pool)); - spin_unlock_irqrestore(&tp->lock, flags); + spin_unlock_irqrestore(&tp->lock, flags); up(&tp->count); } - - int hpsb_packet_success(struct hpsb_packet *packet) { - switch (packet->ack_code) { - case ACK_PENDING: - switch ((packet->header[1] >> 12) & 0xf) { - case RCODE_COMPLETE: - return 0; - case RCODE_CONFLICT_ERROR: - return -EAGAIN; - case RCODE_DATA_ERROR: - return -EREMOTEIO; - case RCODE_TYPE_ERROR: - return -EACCES; - case RCODE_ADDRESS_ERROR: - return -EINVAL; - default: - HPSB_ERR("received reserved rcode %d from node %d", - (packet->header[1] >> 12) & 0xf, - packet->node_id); - return -EAGAIN; - } - HPSB_PANIC("reached unreachable code 1 in %s", __FUNCTION__); - - case ACK_BUSY_X: - case ACK_BUSY_A: - case ACK_BUSY_B: - return -EBUSY; - - case ACK_TYPE_ERROR: - return -EACCES; - - case ACK_COMPLETE: - if (packet->tcode == TCODE_WRITEQ - || packet->tcode == TCODE_WRITEB) { - return 0; - } else { - HPSB_ERR("impossible ack_complete from node %d " - "(tcode %d)", packet->node_id, packet->tcode); - return -EAGAIN; - } - - - case ACK_DATA_ERROR: - if (packet->tcode == TCODE_WRITEB - || packet->tcode == TCODE_LOCK_REQUEST) { - return -EAGAIN; - } else { - HPSB_ERR("impossible ack_data_error from node %d " - "(tcode %d)", packet->node_id, packet->tcode); - return -EAGAIN; - } - - case ACK_ADDRESS_ERROR: - return -EINVAL; - - case ACK_TARDY: - case ACK_CONFLICT_ERROR: - case ACKX_NONE: - case ACKX_SEND_ERROR: - case ACKX_ABORTED: - case ACKX_TIMEOUT: - /* error while sending */ - return -EAGAIN; - - default: - HPSB_ERR("got invalid ack %d from node %d (tcode %d)", - packet->ack_code, packet->node_id, packet->tcode); - return -EAGAIN; - } - - HPSB_PANIC("reached unreachable code 2 in %s", __FUNCTION__); + switch (packet->ack_code) { + case ACK_PENDING: + switch ((packet->header[1] >> 12) & 0xf) { + case RCODE_COMPLETE: + return 0; + case RCODE_CONFLICT_ERROR: + return -EAGAIN; + case RCODE_DATA_ERROR: + return -EREMOTEIO; + case RCODE_TYPE_ERROR: + return -EACCES; + case RCODE_ADDRESS_ERROR: + return -EINVAL; + default: + HPSB_ERR("received reserved rcode %d from node %d", + (packet->header[1] >> 12) & 0xf, + packet->node_id); + return -EAGAIN; + } + HPSB_PANIC("reached unreachable code 1 in %s", __FUNCTION__); + + case ACK_BUSY_X: + case ACK_BUSY_A: + case ACK_BUSY_B: + return -EBUSY; + + case ACK_TYPE_ERROR: + return -EACCES; + + case ACK_COMPLETE: + if (packet->tcode == TCODE_WRITEQ + || packet->tcode == TCODE_WRITEB) { + return 0; + } else { + HPSB_ERR("impossible ack_complete from node %d " + "(tcode %d)", packet->node_id, packet->tcode); + return -EAGAIN; + } + + case ACK_DATA_ERROR: + if (packet->tcode == TCODE_WRITEB + || packet->tcode == TCODE_LOCK_REQUEST) { + return -EAGAIN; + } else { + HPSB_ERR("impossible ack_data_error from node %d " + "(tcode %d)", packet->node_id, packet->tcode); + return -EAGAIN; + } + + case ACK_ADDRESS_ERROR: + return -EINVAL; + + case ACK_TARDY: + case ACK_CONFLICT_ERROR: + case ACKX_NONE: + case ACKX_SEND_ERROR: + case ACKX_ABORTED: + case ACKX_TIMEOUT: + /* error while sending */ + return -EAGAIN; + + default: + HPSB_ERR("got invalid ack %d from node %d (tcode %d)", + packet->ack_code, packet->node_id, packet->tcode); + return -EAGAIN; + } + + HPSB_PANIC("reached unreachable code 2 in %s", __FUNCTION__); } struct hpsb_packet *hpsb_make_readpacket(struct hpsb_host *host, nodeid_t node, u64 addr, size_t length) { - struct hpsb_packet *packet; + struct hpsb_packet *packet; if (length == 0) return NULL; @@ -289,8 +287,9 @@ struct hpsb_packet *hpsb_make_readpacket(struct hpsb_host *host, nodeid_t node, return packet; } -struct hpsb_packet *hpsb_make_writepacket (struct hpsb_host *host, nodeid_t node, - u64 addr, quadlet_t *buffer, size_t length) +struct hpsb_packet *hpsb_make_writepacket(struct hpsb_host *host, nodeid_t node, + u64 addr, quadlet_t * buffer, + size_t length) { struct hpsb_packet *packet; @@ -301,7 +300,7 @@ struct hpsb_packet *hpsb_make_writepacket (struct hpsb_host *host, nodeid_t node if (!packet) return NULL; - if (length % 4) { /* zero padding bytes */ + if (length % 4) { /* zero padding bytes */ packet->data[length >> 2] = 0; } packet->host = host; @@ -323,8 +322,9 @@ struct hpsb_packet *hpsb_make_writepacket (struct hpsb_host *host, nodeid_t node return packet; } -struct hpsb_packet *hpsb_make_streampacket(struct hpsb_host *host, u8 *buffer, int length, - int channel, int tag, int sync) +struct hpsb_packet *hpsb_make_streampacket(struct hpsb_host *host, u8 * buffer, + int length, int channel, int tag, + int sync) { struct hpsb_packet *packet; @@ -335,7 +335,7 @@ struct hpsb_packet *hpsb_make_streampacket(struct hpsb_host *host, u8 *buffer, i if (!packet) return NULL; - if (length % 4) { /* zero padding bytes */ + if (length % 4) { /* zero padding bytes */ packet->data[length >> 2] = 0; } packet->host = host; @@ -353,14 +353,15 @@ struct hpsb_packet *hpsb_make_streampacket(struct hpsb_host *host, u8 *buffer, i } struct hpsb_packet *hpsb_make_lockpacket(struct hpsb_host *host, nodeid_t node, - u64 addr, int extcode, quadlet_t *data, - quadlet_t arg) + u64 addr, int extcode, + quadlet_t * data, quadlet_t arg) { struct hpsb_packet *p; u32 length; p = hpsb_alloc_packet(8); - if (!p) return NULL; + if (!p) + return NULL; p->host = host; p->node_id = node; @@ -389,15 +390,16 @@ struct hpsb_packet *hpsb_make_lockpacket(struct hpsb_host *host, nodeid_t node, return p; } -struct hpsb_packet *hpsb_make_lock64packet(struct hpsb_host *host, nodeid_t node, - u64 addr, int extcode, octlet_t *data, - octlet_t arg) +struct hpsb_packet *hpsb_make_lock64packet(struct hpsb_host *host, + nodeid_t node, u64 addr, int extcode, + octlet_t * data, octlet_t arg) { struct hpsb_packet *p; u32 length; p = hpsb_alloc_packet(16); - if (!p) return NULL; + if (!p) + return NULL; p->host = host; p->node_id = node; @@ -430,18 +432,18 @@ struct hpsb_packet *hpsb_make_lock64packet(struct hpsb_host *host, nodeid_t node return p; } -struct hpsb_packet *hpsb_make_phypacket(struct hpsb_host *host, - quadlet_t data) +struct hpsb_packet *hpsb_make_phypacket(struct hpsb_host *host, quadlet_t data) { - struct hpsb_packet *p; + struct hpsb_packet *p; - p = hpsb_alloc_packet(0); - if (!p) return NULL; + p = hpsb_alloc_packet(0); + if (!p) + return NULL; - p->host = host; - fill_phy_packet(p, data); + p->host = host; + fill_phy_packet(p, data); - return p; + return p; } struct hpsb_packet *hpsb_make_isopacket(struct hpsb_host *host, @@ -451,7 +453,8 @@ struct hpsb_packet *hpsb_make_isopacket(struct hpsb_host *host, struct hpsb_packet *p; p = hpsb_alloc_packet(length); - if (!p) return NULL; + if (!p) + return NULL; p->host = host; fill_iso_packet(p, length, channel, tag, sync); @@ -467,47 +470,46 @@ struct hpsb_packet *hpsb_make_isopacket(struct hpsb_host *host, */ int hpsb_read(struct hpsb_host *host, nodeid_t node, unsigned int generation, - u64 addr, quadlet_t *buffer, size_t length) + u64 addr, quadlet_t * buffer, size_t length) { - struct hpsb_packet *packet; - int retval = 0; + struct hpsb_packet *packet; + int retval = 0; - if (length == 0) - return -EINVAL; + if (length == 0) + return -EINVAL; - BUG_ON(in_interrupt()); // We can't be called in an interrupt, yet + BUG_ON(in_interrupt()); // We can't be called in an interrupt, yet packet = hpsb_make_readpacket(host, node, addr, length); - if (!packet) { - return -ENOMEM; - } + if (!packet) { + return -ENOMEM; + } packet->generation = generation; - retval = hpsb_send_packet_and_wait(packet); + retval = hpsb_send_packet_and_wait(packet); if (retval < 0) goto hpsb_read_fail; - retval = hpsb_packet_success(packet); + retval = hpsb_packet_success(packet); - if (retval == 0) { - if (length == 4) { - *buffer = packet->header[3]; - } else { - memcpy(buffer, packet->data, length); - } - } + if (retval == 0) { + if (length == 4) { + *buffer = packet->header[3]; + } else { + memcpy(buffer, packet->data, length); + } + } -hpsb_read_fail: - hpsb_free_tlabel(packet); - hpsb_free_packet(packet); + hpsb_read_fail: + hpsb_free_tlabel(packet); + hpsb_free_packet(packet); - return retval; + return retval; } - int hpsb_write(struct hpsb_host *host, nodeid_t node, unsigned int generation, - u64 addr, quadlet_t *buffer, size_t length) + u64 addr, quadlet_t * buffer, size_t length) { struct hpsb_packet *packet; int retval; @@ -515,62 +517,61 @@ int hpsb_write(struct hpsb_host *host, nodeid_t node, unsigned int generation, if (length == 0) return -EINVAL; - BUG_ON(in_interrupt()); // We can't be called in an interrupt, yet + BUG_ON(in_interrupt()); // We can't be called in an interrupt, yet - packet = hpsb_make_writepacket (host, node, addr, buffer, length); + packet = hpsb_make_writepacket(host, node, addr, buffer, length); if (!packet) return -ENOMEM; packet->generation = generation; - retval = hpsb_send_packet_and_wait(packet); + retval = hpsb_send_packet_and_wait(packet); if (retval < 0) goto hpsb_write_fail; - retval = hpsb_packet_success(packet); + retval = hpsb_packet_success(packet); -hpsb_write_fail: - hpsb_free_tlabel(packet); - hpsb_free_packet(packet); + hpsb_write_fail: + hpsb_free_tlabel(packet); + hpsb_free_packet(packet); - return retval; + return retval; } #if 0 int hpsb_lock(struct hpsb_host *host, nodeid_t node, unsigned int generation, - u64 addr, int extcode, quadlet_t *data, quadlet_t arg) + u64 addr, int extcode, quadlet_t * data, quadlet_t arg) { - struct hpsb_packet *packet; - int retval = 0; + struct hpsb_packet *packet; + int retval = 0; - BUG_ON(in_interrupt()); // We can't be called in an interrupt, yet + BUG_ON(in_interrupt()); // We can't be called in an interrupt, yet packet = hpsb_make_lockpacket(host, node, addr, extcode, data, arg); - if (!packet) - return -ENOMEM; + if (!packet) + return -ENOMEM; packet->generation = generation; - retval = hpsb_send_packet_and_wait(packet); + retval = hpsb_send_packet_and_wait(packet); if (retval < 0) goto hpsb_lock_fail; - retval = hpsb_packet_success(packet); + retval = hpsb_packet_success(packet); - if (retval == 0) { - *data = packet->data[0]; - } + if (retval == 0) { + *data = packet->data[0]; + } -hpsb_lock_fail: - hpsb_free_tlabel(packet); - hpsb_free_packet(packet); + hpsb_lock_fail: + hpsb_free_tlabel(packet); + hpsb_free_packet(packet); - return retval; + return retval; } - int hpsb_send_gasp(struct hpsb_host *host, int channel, unsigned int generation, - quadlet_t *buffer, size_t length, u32 specifier_id, + quadlet_t * buffer, size_t length, u32 specifier_id, unsigned int version) { struct hpsb_packet *packet; @@ -587,7 +588,8 @@ int hpsb_send_gasp(struct hpsb_host *host, int channel, unsigned int generation, return -ENOMEM; packet->data[0] = cpu_to_be32((host->node_id << 16) | specifier_id_hi); - packet->data[1] = cpu_to_be32((specifier_id_lo << 24) | (version & 0x00ffffff)); + packet->data[1] = + cpu_to_be32((specifier_id_lo << 24) | (version & 0x00ffffff)); memcpy(&(packet->data[2]), buffer, length - 8); @@ -602,4 +604,4 @@ int hpsb_send_gasp(struct hpsb_host *host, int channel, unsigned int generation, return retval; } -#endif /* 0 */ +#endif /* 0 */ |