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firewire: add CSR BUSY_TIMEOUT support

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Implement the BUSY_TIMEOUT register, which is required for nodes that
support retries.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
This commit is contained in:
Clemens Ladisch
2010-06-10 08:34:13 +02:00
parent a48777e03a
commit 27a2329f82
2 changed files with 24 additions and 4 deletions
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14
drivers/firewire/core-transaction.c
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@ -1115,6 +1115,17 @@ static void handle_registers(struct fw_card *card, struct fw_request *request,
rcode = RCODE_TYPE_ERROR;
break;
case CSR_BUSY_TIMEOUT:
if (tcode == TCODE_READ_QUADLET_REQUEST)
*data = cpu_to_be32(card->driver->
read_csr_reg(card, CSR_BUSY_TIMEOUT));
else if (tcode == TCODE_WRITE_QUADLET_REQUEST)
card->driver->write_csr_reg(card, CSR_BUSY_TIMEOUT,
be32_to_cpu(*data));
else
rcode = RCODE_TYPE_ERROR;
break;
case CSR_BROADCAST_CHANNEL:
if (tcode == TCODE_READ_QUADLET_REQUEST)
*data = cpu_to_be32(card->broadcast_channel);
@ -1140,9 +1151,6 @@ static void handle_registers(struct fw_card *card, struct fw_request *request,
BUG();
break;
case CSR_BUSY_TIMEOUT:
/* FIXME: Implement this. */
default:
rcode = RCODE_ADDRESS_ERROR;
break;