^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * motu-transaction.c - a part of driver for MOTU FireWire series
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include "motu.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define SND_MOTU_ADDR_BASE 0xfffff0000000ULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define ASYNC_ADDR_HI 0x0b04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define ASYNC_ADDR_LO 0x0b08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) int snd_motu_transaction_read(struct snd_motu *motu, u32 offset, __be32 *reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) int tcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) if (size % sizeof(__be32) > 0 || size <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) if (size == sizeof(__be32))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) tcode = TCODE_READ_QUADLET_REQUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) tcode = TCODE_READ_BLOCK_REQUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) return snd_fw_transaction(motu->unit, tcode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) SND_MOTU_ADDR_BASE + offset, reg, size, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) int snd_motu_transaction_write(struct snd_motu *motu, u32 offset, __be32 *reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) int tcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) if (size % sizeof(__be32) > 0 || size <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) if (size == sizeof(__be32))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) tcode = TCODE_WRITE_QUADLET_REQUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) tcode = TCODE_WRITE_BLOCK_REQUEST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) return snd_fw_transaction(motu->unit, tcode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) SND_MOTU_ADDR_BASE + offset, reg, size, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static void handle_message(struct fw_card *card, struct fw_request *request,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) int tcode, int destination, int source,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int generation, unsigned long long offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) void *data, size_t length, void *callback_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct snd_motu *motu = callback_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) __be32 *buf = (__be32 *)data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) if (tcode != TCODE_WRITE_QUADLET_REQUEST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) fw_send_response(card, request, RCODE_COMPLETE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) if (offset != motu->async_handler.offset || length != 4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) fw_send_response(card, request, RCODE_ADDRESS_ERROR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) spin_lock_irqsave(&motu->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) motu->msg = be32_to_cpu(*buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) spin_unlock_irqrestore(&motu->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) fw_send_response(card, request, RCODE_COMPLETE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) wake_up(&motu->hwdep_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) int snd_motu_transaction_reregister(struct snd_motu *motu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) struct fw_device *device = fw_parent_device(motu->unit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) __be32 data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if (motu->async_handler.callback_data == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) /* Register messaging address. Block transaction is not allowed. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) data = cpu_to_be32((device->card->node_id << 16) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) (motu->async_handler.offset >> 32));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) err = snd_motu_transaction_write(motu, ASYNC_ADDR_HI, &data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) sizeof(data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) data = cpu_to_be32(motu->async_handler.offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return snd_motu_transaction_write(motu, ASYNC_ADDR_LO, &data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) sizeof(data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) int snd_motu_transaction_register(struct snd_motu *motu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) static const struct fw_address_region resp_register_region = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) .start = 0xffffe0000000ull,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) .end = 0xffffe000ffffull,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /* Perhaps, 4 byte messages are transferred. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) motu->async_handler.length = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) motu->async_handler.address_callback = handle_message;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) motu->async_handler.callback_data = motu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) err = fw_core_add_address_handler(&motu->async_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) &resp_register_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) err = snd_motu_transaction_reregister(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) fw_core_remove_address_handler(&motu->async_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) motu->async_handler.address_callback = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) void snd_motu_transaction_unregister(struct snd_motu *motu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) __be32 data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) if (motu->async_handler.address_callback != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) fw_core_remove_address_handler(&motu->async_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) motu->async_handler.address_callback = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) /* Unregister the address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) data = cpu_to_be32(0x00000000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) snd_motu_transaction_write(motu, ASYNC_ADDR_HI, &data, sizeof(data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) snd_motu_transaction_write(motu, ASYNC_ADDR_LO, &data, sizeof(data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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