diff options
| -rw-r--r-- | drivers/firewire/core-transaction.c | 138 |
1 files changed, 56 insertions, 82 deletions
diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c index c427b7861eaf..a113f801cf33 100644 --- a/drivers/firewire/core-transaction.c +++ b/drivers/firewire/core-transaction.c @@ -29,29 +29,13 @@ #include <asm/byteorder.h> #include "core.h" +#include "packet-header-definitions.h" -#define HEADER_PRI(pri) ((pri) << 0) #define HEADER_TCODE(tcode) ((tcode) << 4) -#define HEADER_RETRY(retry) ((retry) << 8) -#define HEADER_TLABEL(tlabel) ((tlabel) << 10) -#define HEADER_DESTINATION(destination) ((destination) << 16) -#define HEADER_SOURCE(source) ((source) << 16) -#define HEADER_RCODE(rcode) ((rcode) << 12) -#define HEADER_OFFSET_HIGH(offset_high) ((offset_high) << 0) #define HEADER_DATA_LENGTH(length) ((length) << 16) -#define HEADER_EXTENDED_TCODE(tcode) ((tcode) << 0) -#define HEADER_GET_TCODE(q) (((q) >> 4) & 0x0f) -#define HEADER_GET_TLABEL(q) (((q) >> 10) & 0x3f) -#define HEADER_GET_RCODE(q) (((q) >> 12) & 0x0f) -#define HEADER_GET_DESTINATION(q) (((q) >> 16) & 0xffff) -#define HEADER_GET_SOURCE(q) (((q) >> 16) & 0xffff) -#define HEADER_GET_OFFSET_HIGH(q) (((q) >> 0) & 0xffff) -#define HEADER_GET_DATA_LENGTH(q) (((q) >> 16) & 0xffff) -#define HEADER_GET_EXTENDED_TCODE(q) (((q) >> 0) & 0xffff) - -#define HEADER_DESTINATION_IS_BROADCAST(q) \ - (((q) & HEADER_DESTINATION(0x3f)) == HEADER_DESTINATION(0x3f)) +#define HEADER_DESTINATION_IS_BROADCAST(header) \ + ((async_header_get_destination(header) & 0x3f) == 0x3f) #define PHY_PACKET_CONFIG 0x0 #define PHY_PACKET_LINK_ON 0x1 @@ -248,28 +232,24 @@ static void fw_fill_request(struct fw_packet *packet, int tcode, int tlabel, } else ext_tcode = 0; - packet->header[0] = - HEADER_RETRY(RETRY_X) | - HEADER_TLABEL(tlabel) | - HEADER_TCODE(tcode) | - HEADER_DESTINATION(destination_id); - packet->header[1] = - HEADER_OFFSET_HIGH(offset >> 32) | HEADER_SOURCE(source_id); - packet->header[2] = - offset; + async_header_set_retry(packet->header, RETRY_X); + async_header_set_tlabel(packet->header, tlabel); + async_header_set_tcode(packet->header, tcode); + async_header_set_destination(packet->header, destination_id); + async_header_set_source(packet->header, source_id); + async_header_set_offset(packet->header, offset); switch (tcode) { case TCODE_WRITE_QUADLET_REQUEST: - packet->header[3] = *(u32 *)payload; + async_header_set_quadlet_data(packet->header, *(u32 *)payload); packet->header_length = 16; packet->payload_length = 0; break; case TCODE_LOCK_REQUEST: case TCODE_WRITE_BLOCK_REQUEST: - packet->header[3] = - HEADER_DATA_LENGTH(length) | - HEADER_EXTENDED_TCODE(ext_tcode); + async_header_set_data_length(packet->header, length); + async_header_set_extended_tcode(packet->header, ext_tcode); packet->header_length = 16; packet->payload = payload; packet->payload_length = length; @@ -281,9 +261,8 @@ static void fw_fill_request(struct fw_packet *packet, int tcode, int tlabel, break; case TCODE_READ_BLOCK_REQUEST: - packet->header[3] = - HEADER_DATA_LENGTH(length) | - HEADER_EXTENDED_TCODE(ext_tcode); + async_header_set_data_length(packet->header, length); + async_header_set_extended_tcode(packet->header, ext_tcode); packet->header_length = 16; packet->payload_length = 0; break; @@ -655,7 +634,7 @@ EXPORT_SYMBOL(fw_core_remove_address_handler); struct fw_request { struct kref kref; struct fw_packet response; - u32 request_header[4]; + u32 request_header[ASYNC_HEADER_QUADLET_COUNT]; int ack; u32 timestamp; u32 length; @@ -695,7 +674,7 @@ int fw_get_response_length(struct fw_request *r) { int tcode, ext_tcode, data_length; - tcode = HEADER_GET_TCODE(r->request_header[0]); + tcode = async_header_get_tcode(r->request_header); switch (tcode) { case TCODE_WRITE_QUADLET_REQUEST: @@ -706,12 +685,12 @@ int fw_get_response_length(struct fw_request *r) return 4; case TCODE_READ_BLOCK_REQUEST: - data_length = HEADER_GET_DATA_LENGTH(r->request_header[3]); + data_length = async_header_get_data_length(r->request_header); return data_length; case TCODE_LOCK_REQUEST: - ext_tcode = HEADER_GET_EXTENDED_TCODE(r->request_header[3]); - data_length = HEADER_GET_DATA_LENGTH(r->request_header[3]); + ext_tcode = async_header_get_extended_tcode(r->request_header); + data_length = async_header_get_data_length(r->request_header); switch (ext_tcode) { case EXTCODE_FETCH_ADD: case EXTCODE_LITTLE_ADD: @@ -731,46 +710,42 @@ void fw_fill_response(struct fw_packet *response, u32 *request_header, { int tcode, tlabel, extended_tcode, source, destination; - tcode = HEADER_GET_TCODE(request_header[0]); - tlabel = HEADER_GET_TLABEL(request_header[0]); - source = HEADER_GET_DESTINATION(request_header[0]); - destination = HEADER_GET_SOURCE(request_header[1]); - extended_tcode = HEADER_GET_EXTENDED_TCODE(request_header[3]); - - response->header[0] = - HEADER_RETRY(RETRY_1) | - HEADER_TLABEL(tlabel) | - HEADER_DESTINATION(destination); - response->header[1] = - HEADER_SOURCE(source) | - HEADER_RCODE(rcode); - response->header[2] = 0; + tcode = async_header_get_tcode(request_header); + tlabel = async_header_get_tlabel(request_header); + source = async_header_get_destination(request_header); // Exchange. + destination = async_header_get_source(request_header); // Exchange. + extended_tcode = async_header_get_extended_tcode(request_header); + + async_header_set_retry(response->header, RETRY_1); + async_header_set_tlabel(response->header, tlabel); + async_header_set_destination(response->header, destination); + async_header_set_source(response->header, source); + async_header_set_rcode(response->header, rcode); + response->header[2] = 0; // The field is reserved. switch (tcode) { case TCODE_WRITE_QUADLET_REQUEST: case TCODE_WRITE_BLOCK_REQUEST: - response->header[0] |= HEADER_TCODE(TCODE_WRITE_RESPONSE); + async_header_set_tcode(response->header, TCODE_WRITE_RESPONSE); response->header_length = 12; response->payload_length = 0; break; case TCODE_READ_QUADLET_REQUEST: - response->header[0] |= - HEADER_TCODE(TCODE_READ_QUADLET_RESPONSE); + async_header_set_tcode(response->header, TCODE_READ_QUADLET_RESPONSE); if (payload != NULL) - response->header[3] = *(u32 *)payload; + async_header_set_quadlet_data(response->header, *(u32 *)payload); else - response->header[3] = 0; + async_header_set_quadlet_data(response->header, 0); response->header_length = 16; response->payload_length = 0; break; case TCODE_READ_BLOCK_REQUEST: case TCODE_LOCK_REQUEST: - response->header[0] |= HEADER_TCODE(tcode + 2); - response->header[3] = - HEADER_DATA_LENGTH(length) | - HEADER_EXTENDED_TCODE(extended_tcode); + async_header_set_tcode(response->header, tcode + 2); + async_header_set_data_length(response->header, length); + async_header_set_extended_tcode(response->header, extended_tcode); response->header_length = 16; response->payload = payload; response->payload_length = length; @@ -807,7 +782,7 @@ static struct fw_request *allocate_request(struct fw_card *card, u32 *data, length; int request_tcode; - request_tcode = HEADER_GET_TCODE(p->header[0]); + request_tcode = async_header_get_tcode(p->header); switch (request_tcode) { case TCODE_WRITE_QUADLET_REQUEST: data = &p->header[3]; @@ -817,7 +792,7 @@ static struct fw_request *allocate_request(struct fw_card *card, case TCODE_WRITE_BLOCK_REQUEST: case TCODE_LOCK_REQUEST: data = p->payload; - length = HEADER_GET_DATA_LENGTH(p->header[3]); + length = async_header_get_data_length(p->header); break; case TCODE_READ_QUADLET_REQUEST: @@ -827,7 +802,7 @@ static struct fw_request *allocate_request(struct fw_card *card, case TCODE_READ_BLOCK_REQUEST: data = NULL; - length = HEADER_GET_DATA_LENGTH(p->header[3]); + length = async_header_get_data_length(p->header); break; default: @@ -872,7 +847,7 @@ void fw_send_response(struct fw_card *card, { /* unified transaction or broadcast transaction: don't respond */ if (request->ack != ACK_PENDING || - HEADER_DESTINATION_IS_BROADCAST(request->request_header[0])) { + HEADER_DESTINATION_IS_BROADCAST(request->request_header)) { fw_request_put(request); return; } @@ -926,11 +901,11 @@ static void handle_exclusive_region_request(struct fw_card *card, struct fw_address_handler *handler; int tcode, destination, source; - destination = HEADER_GET_DESTINATION(p->header[0]); - source = HEADER_GET_SOURCE(p->header[1]); - tcode = HEADER_GET_TCODE(p->header[0]); + destination = async_header_get_destination(p->header); + source = async_header_get_source(p->header); + tcode = async_header_get_tcode(p->header); if (tcode == TCODE_LOCK_REQUEST) - tcode = 0x10 + HEADER_GET_EXTENDED_TCODE(p->header[3]); + tcode = 0x10 + async_header_get_extended_tcode(p->header); rcu_read_lock(); handler = lookup_enclosing_address_handler(&address_handler_list, @@ -963,9 +938,9 @@ static void handle_fcp_region_request(struct fw_card *card, return; } - tcode = HEADER_GET_TCODE(p->header[0]); - destination = HEADER_GET_DESTINATION(p->header[0]); - source = HEADER_GET_SOURCE(p->header[1]); + tcode = async_header_get_tcode(p->header); + destination = async_header_get_destination(p->header); + source = async_header_get_source(p->header); if (tcode != TCODE_WRITE_QUADLET_REQUEST && tcode != TCODE_WRITE_BLOCK_REQUEST) { @@ -997,7 +972,7 @@ void fw_core_handle_request(struct fw_card *card, struct fw_packet *p) if (p->ack != ACK_PENDING && p->ack != ACK_COMPLETE) return; - if (TCODE_IS_LINK_INTERNAL(HEADER_GET_TCODE(p->header[0]))) { + if (TCODE_IS_LINK_INTERNAL(async_header_get_tcode(p->header))) { fw_cdev_handle_phy_packet(card, p); return; } @@ -1008,8 +983,7 @@ void fw_core_handle_request(struct fw_card *card, struct fw_packet *p) return; } - offset = ((u64)HEADER_GET_OFFSET_HIGH(p->header[1]) << 32) | - p->header[2]; + offset = async_header_get_offset(p->header); if (!is_in_fcp_region(offset, request->length)) handle_exclusive_region_request(card, p, request, offset); @@ -1027,10 +1001,10 @@ void fw_core_handle_response(struct fw_card *card, struct fw_packet *p) size_t data_length; int tcode, tlabel, source, rcode; - tcode = HEADER_GET_TCODE(p->header[0]); - tlabel = HEADER_GET_TLABEL(p->header[0]); - source = HEADER_GET_SOURCE(p->header[1]); - rcode = HEADER_GET_RCODE(p->header[1]); + tcode = async_header_get_tcode(p->header); + tlabel = async_header_get_tlabel(p->header); + source = async_header_get_source(p->header); + rcode = async_header_get_rcode(p->header); spin_lock_irqsave(&card->lock, flags); list_for_each_entry(iter, &card->transaction_list, link) { @@ -1073,7 +1047,7 @@ void fw_core_handle_response(struct fw_card *card, struct fw_packet *p) case TCODE_READ_BLOCK_RESPONSE: case TCODE_LOCK_RESPONSE: data = p->payload; - data_length = HEADER_GET_DATA_LENGTH(p->header[3]); + data_length = async_header_get_data_length(p->header); break; default: |