diff options
Diffstat (limited to 'drivers/firewire/fw-transaction.c')
| -rw-r--r-- | drivers/firewire/fw-transaction.c | 32 |
1 files changed, 23 insertions, 9 deletions
diff --git a/drivers/firewire/fw-transaction.c b/drivers/firewire/fw-transaction.c index 03ae8a77c479..40db80752272 100644 --- a/drivers/firewire/fw-transaction.c +++ b/drivers/firewire/fw-transaction.c @@ -55,6 +55,9 @@ #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 PHY_CONFIG_GAP_COUNT(gap_count) (((gap_count) << 16) | (1 << 22)) #define PHY_CONFIG_ROOT_ID(node_id) ((((node_id) & 0x3f) << 24) | (1 << 23)) #define PHY_IDENTIFIER(id) ((id) << 30) @@ -624,12 +627,9 @@ allocate_request(struct fw_packet *p) void fw_send_response(struct fw_card *card, struct fw_request *request, int rcode) { - /* - * Broadcast packets are reported as ACK_COMPLETE, so this - * check is sufficient to ensure we don't send response to - * broadcast packets or posted writes. - */ - if (request->ack != ACK_PENDING) { + /* unified transaction or broadcast transaction: don't respond */ + if (request->ack != ACK_PENDING || + HEADER_DESTINATION_IS_BROADCAST(request->request_header[0])) { kfree(request); return; } @@ -817,12 +817,13 @@ handle_registers(struct fw_card *card, struct fw_request *request, int reg = offset & ~CSR_REGISTER_BASE; unsigned long long bus_time; __be32 *data = payload; + int rcode = RCODE_COMPLETE; switch (reg) { case CSR_CYCLE_TIME: case CSR_BUS_TIME: if (!TCODE_IS_READ_REQUEST(tcode) || length != 4) { - fw_send_response(card, request, RCODE_TYPE_ERROR); + rcode = RCODE_TYPE_ERROR; break; } @@ -831,7 +832,17 @@ handle_registers(struct fw_card *card, struct fw_request *request, *data = cpu_to_be32(bus_time); else *data = cpu_to_be32(bus_time >> 25); - fw_send_response(card, request, RCODE_COMPLETE); + break; + + case CSR_BROADCAST_CHANNEL: + if (tcode == TCODE_READ_QUADLET_REQUEST) + *data = cpu_to_be32(card->broadcast_channel); + else if (tcode == TCODE_WRITE_QUADLET_REQUEST) + card->broadcast_channel = + (be32_to_cpu(*data) & BROADCAST_CHANNEL_VALID) | + BROADCAST_CHANNEL_INITIAL; + else + rcode = RCODE_TYPE_ERROR; break; case CSR_BUS_MANAGER_ID: @@ -850,10 +861,13 @@ handle_registers(struct fw_card *card, struct fw_request *request, case CSR_BUSY_TIMEOUT: /* FIXME: Implement this. */ + default: - fw_send_response(card, request, RCODE_ADDRESS_ERROR); + rcode = RCODE_ADDRESS_ERROR; break; } + + fw_send_response(card, request, rcode); } static struct fw_address_handler registers = { |