static int ff800_begin_session(struct snd_ff *ff, unsigned int rate)
{
__le32 reg;
int err;
reg = cpu_to_le32(rate);
err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
FF800_STF, ®, sizeof(reg), 0);
if (err < 0)
return err;
// If starting isochronous communication immediately, change of STF has
// no effect. In this case, the communication runs based on former STF.
// Let's sleep for a bit.
msleep(100);
err = allocate_rx_resources(ff);
if (err < 0)
return err;
err = allocate_tx_resources(ff);
if (err < 0)
return err;
reg = cpu_to_le32(0x80000000);
reg |= cpu_to_le32(ff->tx_stream.data_block_quadlets);
if (fw_parent_device(ff->unit)->max_speed == SCODE_800)
reg |= cpu_to_le32(FF800_TX_S800_FLAG);
return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
FF800_ISOC_COMM_START, ®, sizeof(reg), 0);
}
static void ff800_finish_session(struct snd_ff *ff)
{
__le32 reg;
reg = cpu_to_le32(0x80000000);
snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
FF800_ISOC_COMM_STOP, ®, sizeof(reg), 0);
}
static int name_card(struct snd_oxfw *oxfw)
{
struct fw_device *fw_dev = fw_parent_device(oxfw->unit);
const struct compat_info *info;
char vendor[24];
char model[32];
const char *d, *v, *m;
u32 firmware;
int err;
/* get vendor name from root directory */
err = fw_csr_string(fw_dev->config_rom + 5, CSR_VENDOR,
vendor, sizeof(vendor));
if (err < 0)
goto end;
/* get model name from unit directory */
err = fw_csr_string(oxfw->unit->directory, CSR_MODEL,
model, sizeof(model));
if (err < 0)
goto end;
err = snd_fw_transaction(oxfw->unit, TCODE_READ_QUADLET_REQUEST,
OXFORD_FIRMWARE_ID_ADDRESS, &firmware, 4, 0);
if (err < 0)
goto end;
be32_to_cpus(&firmware);
/* to apply card definitions */
if (oxfw->entry->vendor_id == VENDOR_GRIFFIN ||
oxfw->entry->vendor_id == VENDOR_LACIE) {
info = (const struct compat_info *)oxfw->entry->driver_data;
d = info->driver_name;
v = info->vendor_name;
m = info->model_name;
} else {
d = "OXFW";
v = vendor;
m = model;
}
strcpy(oxfw->card->driver, d);
strcpy(oxfw->card->mixername, m);
strcpy(oxfw->card->shortname, m);
snprintf(oxfw->card->longname, sizeof(oxfw->card->longname),
"%s %s (OXFW%x %04x), GUID %08x%08x at %s, S%d",
v, m, firmware >> 20, firmware & 0xffff,
fw_dev->config_rom[3], fw_dev->config_rom[4],
dev_name(&oxfw->unit->device), 100 << fw_dev->max_speed);
end:
return err;
}
static int allocate_tx_resources(struct snd_ff *ff)
{
__le32 reg;
unsigned int count;
unsigned int tx_isoc_channel;
int err;
reg = cpu_to_le32(ff->tx_stream.data_block_quadlets);
err = snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
FF800_ALLOC_TX_STREAM, ®, sizeof(reg), 0);
if (err < 0)
return err;
// Wait till the format of tx packet is available.
count = 0;
while (count++ < 10) {
u32 data;
err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST,
FF800_TX_PACKET_ISOC_CH, ®, sizeof(reg), 0);
if (err < 0)
return err;
data = le32_to_cpu(reg);
if (data != 0xffffffff) {
tx_isoc_channel = data;
break;
}
msleep(50);
}
if (count >= 10)
return -ETIMEDOUT;
// NOTE: this is a makeshift to start OHCI 1394 IR context in the
// channel. On the other hand, 'struct fw_iso_resources.allocated' is
// not true and it's not deallocated at stop.
ff->tx_resources.channel = tx_isoc_channel;
return 0;
}
static int get_optical_iface_mode(struct snd_dg00x *dg00x,
enum snd_dg00x_optical_mode *mode)
{
__be32 data;
int err;
err = snd_fw_transaction(dg00x->unit, TCODE_READ_QUADLET_REQUEST,
DG00X_ADDR_BASE + DG00X_OFFSET_OPT_IFACE_MODE,
&data, sizeof(data), 0);
if (err >= 0)
*mode = be32_to_cpu(data) & 0x01;
return err;
}
static int allocate_rx_resources(struct snd_ff *ff)
{
u32 data;
__le32 reg;
int err;
// Controllers should allocate isochronous resources for rx stream.
err = fw_iso_resources_allocate(&ff->rx_resources,
amdtp_stream_get_max_payload(&ff->rx_stream),
fw_parent_device(ff->unit)->max_speed);
if (err < 0)
return err;
// Set isochronous channel and the number of quadlets of rx packets.
data = ff->rx_stream.data_block_quadlets << 3;
data = (data << 8) | ff->rx_resources.channel;
reg = cpu_to_le32(data);
return snd_fw_transaction(ff->unit, TCODE_WRITE_QUADLET_REQUEST,
FF800_RX_PACKET_FORMAT, ®, sizeof(reg), 0);
}
