From 506f1a31932747f56a5029d5b3c14b1b68f41ccc Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Thu, 10 Jun 2010 08:25:19 +0200 Subject: firewire: add CSR NODE_IDS support The NODE_IDS register, and especially its bus_id field, is quite useless because 1394.1 requires that the bus_id field always stays 0x3ff. However, the 1394 specification requires this register on all transaction capable nodes, and the Base 1394 Test Suite tests for it, so we better implement it. Signed-off-by: Clemens Ladisch --- drivers/firewire/core-transaction.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/firewire/core-transaction.c') diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c index a4d8109edec2..16ffa27d23b7 100644 --- a/drivers/firewire/core-transaction.c +++ b/drivers/firewire/core-transaction.c @@ -1023,6 +1023,17 @@ static void handle_registers(struct fw_card *card, struct fw_request *request, } break; + case CSR_NODE_IDS: + if (tcode == TCODE_READ_QUADLET_REQUEST) + *data = cpu_to_be32(card->driver-> + read_csr_reg(card, CSR_NODE_IDS)); + else if (tcode == TCODE_WRITE_QUADLET_REQUEST) + card->driver->write_csr_reg(card, CSR_NODE_IDS, + be32_to_cpu(*data)); + else + rcode = RCODE_TYPE_ERROR; + break; + case CSR_CYCLE_TIME: if (TCODE_IS_READ_REQUEST(tcode) && length == 4) *data = cpu_to_be32(card->driver-> -- cgit