diff options
Diffstat (limited to 'sound/firewire/fireface/ff-transaction.c')
| -rw-r--r-- | sound/firewire/fireface/ff-transaction.c | 143 |
1 files changed, 25 insertions, 118 deletions
diff --git a/sound/firewire/fireface/ff-transaction.c b/sound/firewire/fireface/ff-transaction.c index 5f4ddfd55403..0d6ad19363b8 100644 --- a/sound/firewire/fireface/ff-transaction.c +++ b/sound/firewire/fireface/ff-transaction.c @@ -8,72 +8,6 @@ #include "ff.h" -#define SND_FF_REG_MIDI_RX_PORT_0 0x000080180000ull -#define SND_FF_REG_MIDI_RX_PORT_1 0x000080190000ull - -int snd_ff_transaction_get_clock(struct snd_ff *ff, unsigned int *rate, - enum snd_ff_clock_src *src) -{ - __le32 reg; - u32 data; - int err; - - err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST, - SND_FF_REG_CLOCK_CONFIG, ®, sizeof(reg), 0); - if (err < 0) - return err; - data = le32_to_cpu(reg); - - /* Calculate sampling rate. */ - switch ((data >> 1) & 0x03) { - case 0x01: - *rate = 32000; - break; - case 0x00: - *rate = 44100; - break; - case 0x03: - *rate = 48000; - break; - case 0x02: - default: - return -EIO; - } - - if (data & 0x08) - *rate *= 2; - else if (data & 0x10) - *rate *= 4; - - /* Calculate source of clock. */ - if (data & 0x01) { - *src = SND_FF_CLOCK_SRC_INTERNAL; - } else { - /* TODO: 0x02, 0x06, 0x07? */ - switch ((data >> 10) & 0x07) { - case 0x00: - *src = SND_FF_CLOCK_SRC_ADAT1; - break; - case 0x01: - *src = SND_FF_CLOCK_SRC_ADAT2; - break; - case 0x03: - *src = SND_FF_CLOCK_SRC_SPDIF; - break; - case 0x04: - *src = SND_FF_CLOCK_SRC_WORD; - break; - case 0x05: - *src = SND_FF_CLOCK_SRC_LTC; - break; - default: - return -EIO; - } - } - - return 0; -} - static void finish_transmit_midi_msg(struct snd_ff *ff, unsigned int port, int rcode) { @@ -117,23 +51,17 @@ static void finish_transmit_midi1_msg(struct fw_card *card, int rcode, finish_transmit_midi_msg(ff, 1, rcode); } -static inline void fill_midi_buf(struct snd_ff *ff, unsigned int port, - unsigned int index, u8 byte) -{ - ff->msg_buf[port][index] = cpu_to_le32(byte); -} - static void transmit_midi_msg(struct snd_ff *ff, unsigned int port) { struct snd_rawmidi_substream *substream = READ_ONCE(ff->rx_midi_substreams[port]); - u8 *buf = (u8 *)ff->msg_buf[port]; - int i, len; + int quad_count; struct fw_device *fw_dev = fw_parent_device(ff->unit); unsigned long long addr; int generation; fw_transaction_callback_t callback; + int tcode; if (substream == NULL || snd_rawmidi_transmit_empty(substream)) return; @@ -147,26 +75,26 @@ static void transmit_midi_msg(struct snd_ff *ff, unsigned int port) return; } - len = snd_rawmidi_transmit_peek(substream, buf, - SND_FF_MAXIMIM_MIDI_QUADS); - if (len <= 0) + quad_count = ff->spec->protocol->fill_midi_msg(ff, substream, port); + if (quad_count <= 0) return; - for (i = len - 1; i >= 0; i--) - fill_midi_buf(ff, port, i, buf[i]); - if (port == 0) { - addr = SND_FF_REG_MIDI_RX_PORT_0; + addr = ff->spec->midi_rx_addrs[0]; callback = finish_transmit_midi0_msg; } else { - addr = SND_FF_REG_MIDI_RX_PORT_1; + addr = ff->spec->midi_rx_addrs[1]; callback = finish_transmit_midi1_msg; } /* Set interval to next transaction. */ ff->next_ktime[port] = ktime_add_ns(ktime_get(), - len * 8 * NSEC_PER_SEC / 31250); - ff->rx_bytes[port] = len; + ff->rx_bytes[port] * 8 * NSEC_PER_SEC / 31250); + + if (quad_count == 1) + tcode = TCODE_WRITE_QUADLET_REQUEST; + else + tcode = TCODE_WRITE_BLOCK_REQUEST; /* * In Linux FireWire core, when generation is updated with memory @@ -178,10 +106,9 @@ static void transmit_midi_msg(struct snd_ff *ff, unsigned int port) */ generation = fw_dev->generation; smp_rmb(); - fw_send_request(fw_dev->card, &ff->transactions[port], - TCODE_WRITE_BLOCK_REQUEST, + fw_send_request(fw_dev->card, &ff->transactions[port], tcode, fw_dev->node_id, generation, fw_dev->max_speed, - addr, &ff->msg_buf[port], len * 4, + addr, &ff->msg_buf[port], quad_count * 4, callback, &ff->transactions[port]); } @@ -209,7 +136,9 @@ static void handle_midi_msg(struct fw_card *card, struct fw_request *request, fw_send_response(card, request, RCODE_COMPLETE); - ff->spec->protocol->handle_midi_msg(ff, buf, length); + offset -= ff->async_handler.offset; + ff->spec->protocol->handle_midi_msg(ff, (unsigned int)offset, buf, + length); } static int allocate_own_address(struct snd_ff *ff, int i) @@ -217,7 +146,7 @@ static int allocate_own_address(struct snd_ff *ff, int i) struct fw_address_region midi_msg_region; int err; - ff->async_handler.length = SND_FF_MAXIMIM_MIDI_QUADS * 4; + ff->async_handler.length = ff->spec->midi_addr_range; ff->async_handler.address_callback = handle_midi_msg; ff->async_handler.callback_data = ff; @@ -236,35 +165,13 @@ static int allocate_own_address(struct snd_ff *ff, int i) return err; } -/* - * Controllers are allowed to register higher 4 bytes of address to receive - * the transactions. Different models have different registers for this purpose; - * e.g. 0x'0000'8010'03f4 for Fireface 400. - * The controllers are not allowed to register lower 4 bytes of the address. - * They are forced to select one of 4 options for the part of address by writing - * corresponding bits to 0x'0000'8010'051f. - * - * The 3rd-6th bits of this register are flags to indicate lower 4 bytes of - * address to which the device transferrs the transactions. In short: - * - 0x20: 0x'....'....'0000'0180 - * - 0x10: 0x'....'....'0000'0100 - * - 0x08: 0x'....'....'0000'0080 - * - 0x04: 0x'....'....'0000'0000 - * - * This driver configure 0x'....'....'0000'0000 to receive MIDI messages from - * units. The 3rd bit of the register should be configured, however this driver - * deligates this task to userspace applications due to a restriction that this - * register is write-only and the other bits have own effects. - * - * Unlike Fireface 800, Fireface 400 cancels transferring asynchronous - * transactions when the 1st and 2nd of the register stand. These two bits have - * the same effect. - * - 0x02, 0x01: cancel transferring - * - * On the other hand, the bits have no effect on Fireface 800. This model - * cancels asynchronous transactions when the higher 4 bytes of address is - * overwritten with zero. - */ +// Controllers are allowed to register higher 4 bytes of destination address to +// receive asynchronous transactions for MIDI messages, while the way to +// register lower 4 bytes of address is different depending on protocols. For +// details, please refer to comments in protocol implementations. +// +// This driver expects userspace applications to configure registers for the +// lower address because in most cases such registers has the other settings. int snd_ff_transaction_reregister(struct snd_ff *ff) { struct fw_card *fw_card = fw_parent_device(ff->unit)->card; |