diff options
| author | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2008-05-24 16:41:09 +0200 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2008-07-14 13:06:03 +0200 |
| commit | e534fe16b987780744da351acece2a4699783096 (patch) | |
| tree | fdeafe1851b2b40b3def1f4135a7fc847deb595a /drivers/firewire/fw-transaction.c | |
| parent | 435f972697fcd4c424db941f0ea8f2e38eda2b39 (diff) | |
firewire: implement broadcast_channel CSR for 1394a compliance
See IEEE 1394a clause 8.3.2.3.11.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/firewire/fw-transaction.c')
| -rw-r--r-- | drivers/firewire/fw-transaction.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/firewire/fw-transaction.c b/drivers/firewire/fw-transaction.c index 03ae8a77c479..2f11ed1acf01 100644 --- a/drivers/firewire/fw-transaction.c +++ b/drivers/firewire/fw-transaction.c @@ -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 = { |