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| 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 | |
| parent | 435f972697fcd4c424db941f0ea8f2e38eda2b39 (diff) | |
| download | linux-e534fe16b987780744da351acece2a4699783096.tar.bz2 | |
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>
| -rw-r--r-- | drivers/firewire/fw-card.c | 1 | ||||
| -rw-r--r-- | drivers/firewire/fw-transaction.c | 20 | ||||
| -rw-r--r-- | drivers/firewire/fw-transaction.h | 4 |
3 files changed, 22 insertions, 3 deletions
diff --git a/drivers/firewire/fw-card.c b/drivers/firewire/fw-card.c index 5b4c0d9f5173..96340ce690d4 100644 --- a/drivers/firewire/fw-card.c +++ b/drivers/firewire/fw-card.c @@ -403,6 +403,7 @@ fw_card_initialize(struct fw_card *card, const struct fw_card_driver *driver, card->current_tlabel = 0; card->tlabel_mask = 0; card->color = 0; + card->broadcast_channel = BROADCAST_CHANNEL_INITIAL; INIT_LIST_HEAD(&card->transaction_list); spin_lock_init(&card->lock); 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 = { diff --git a/drivers/firewire/fw-transaction.h b/drivers/firewire/fw-transaction.h index 04d3854f6560..f3a493d596cc 100644 --- a/drivers/firewire/fw-transaction.h +++ b/drivers/firewire/fw-transaction.h @@ -80,6 +80,9 @@ #define CSR_SPEED_MAP 0x2000 #define CSR_SPEED_MAP_END 0x3000 +#define BROADCAST_CHANNEL_INITIAL (1 << 31 | 31) +#define BROADCAST_CHANNEL_VALID (1 << 30) + #define fw_notify(s, args...) printk(KERN_NOTICE KBUILD_MODNAME ": " s, ## args) #define fw_error(s, args...) printk(KERN_ERR KBUILD_MODNAME ": " s, ## args) @@ -236,6 +239,7 @@ struct fw_card { */ int self_id_count; u32 topology_map[252 + 3]; + u32 broadcast_channel; spinlock_t lock; /* Take this lock when handling the lists in * this struct. */ |