^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) * dice_transaction.c - a part of driver for Dice based devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) Clemens Ladisch
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (c) 2014 Takashi Sakamoto
^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 "dice.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) static u64 get_subaddr(struct snd_dice *dice, enum snd_dice_addr_type type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) u64 offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) case SND_DICE_ADDR_TYPE_TX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) offset += dice->tx_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) case SND_DICE_ADDR_TYPE_RX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) offset += dice->rx_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) case SND_DICE_ADDR_TYPE_SYNC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) offset += dice->sync_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) case SND_DICE_ADDR_TYPE_RSRV:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) offset += dice->rsrv_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) case SND_DICE_ADDR_TYPE_GLOBAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) offset += dice->global_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) offset += DICE_PRIVATE_SPACE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) return offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) int snd_dice_transaction_write(struct snd_dice *dice,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) enum snd_dice_addr_type type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) unsigned int offset, void *buf, unsigned int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) return snd_fw_transaction(dice->unit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) (len == 4) ? TCODE_WRITE_QUADLET_REQUEST :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) TCODE_WRITE_BLOCK_REQUEST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) get_subaddr(dice, type, offset), buf, len, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int snd_dice_transaction_read(struct snd_dice *dice,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) enum snd_dice_addr_type type, unsigned int offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) void *buf, unsigned int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) return snd_fw_transaction(dice->unit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) (len == 4) ? TCODE_READ_QUADLET_REQUEST :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) TCODE_READ_BLOCK_REQUEST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) get_subaddr(dice, type, offset), buf, len, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) static unsigned int get_clock_info(struct snd_dice *dice, __be32 *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return snd_dice_transaction_read_global(dice, GLOBAL_CLOCK_SELECT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) info, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) int snd_dice_transaction_get_clock_source(struct snd_dice *dice,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) unsigned int *source)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) __be32 info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) err = get_clock_info(dice, &info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) if (err >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) *source = be32_to_cpu(info) & CLOCK_SOURCE_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return err;
^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_dice_transaction_get_rate(struct snd_dice *dice, unsigned int *rate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) __be32 info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) unsigned int index;
^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) err = get_clock_info(dice, &info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) index = (be32_to_cpu(info) & CLOCK_RATE_MASK) >> CLOCK_RATE_SHIFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) if (index >= SND_DICE_RATES_COUNT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) err = -ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) *rate = snd_dice_rates[index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) int snd_dice_transaction_set_enable(struct snd_dice *dice)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) __be32 value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) if (dice->global_enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) value = cpu_to_be32(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) err = snd_fw_transaction(dice->unit, TCODE_WRITE_QUADLET_REQUEST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) get_subaddr(dice, SND_DICE_ADDR_TYPE_GLOBAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) GLOBAL_ENABLE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) &value, 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) FW_FIXED_GENERATION | dice->owner_generation);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) dice->global_enabled = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) void snd_dice_transaction_clear_enable(struct snd_dice *dice)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) __be32 value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) value = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) snd_fw_transaction(dice->unit, TCODE_WRITE_QUADLET_REQUEST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) get_subaddr(dice, SND_DICE_ADDR_TYPE_GLOBAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) GLOBAL_ENABLE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) &value, 4, FW_QUIET |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) FW_FIXED_GENERATION | dice->owner_generation);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) dice->global_enabled = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) static void dice_notification(struct fw_card *card, struct fw_request *request,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) int tcode, int destination, int source,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) int generation, unsigned long long offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) void *data, size_t length, void *callback_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) struct snd_dice *dice = callback_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) u32 bits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if (tcode != TCODE_WRITE_QUADLET_REQUEST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) fw_send_response(card, request, RCODE_TYPE_ERROR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if ((offset & 3) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) fw_send_response(card, request, RCODE_ADDRESS_ERROR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) bits = be32_to_cpup(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) spin_lock_irqsave(&dice->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) dice->notification_bits |= bits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) spin_unlock_irqrestore(&dice->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) fw_send_response(card, request, RCODE_COMPLETE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) if (bits & NOTIFY_LOCK_CHG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) complete(&dice->clock_accepted);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) wake_up(&dice->hwdep_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static int register_notification_address(struct snd_dice *dice, bool retry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) struct fw_device *device = fw_parent_device(dice->unit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) __be64 *buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) unsigned int retries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) retries = (retry) ? 3 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) buffer = kmalloc(2 * 8, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (!buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) for (;;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) buffer[0] = cpu_to_be64(OWNER_NO_OWNER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) buffer[1] = cpu_to_be64(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) ((u64)device->card->node_id << OWNER_NODE_SHIFT) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) dice->notification_handler.offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) dice->owner_generation = device->generation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) smp_rmb(); /* node_id vs. generation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) err = snd_fw_transaction(dice->unit, TCODE_LOCK_COMPARE_SWAP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) get_subaddr(dice,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) SND_DICE_ADDR_TYPE_GLOBAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) GLOBAL_OWNER),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) buffer, 2 * 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) FW_FIXED_GENERATION |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) dice->owner_generation);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (err == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) /* success */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (buffer[0] == cpu_to_be64(OWNER_NO_OWNER))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) /* The address seems to be already registered. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) if (buffer[0] == buffer[1])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) dev_err(&dice->unit->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) "device is already in use\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) err = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) if (err != -EAGAIN || retries-- > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) msleep(20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) kfree(buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) dice->owner_generation = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) static void unregister_notification_address(struct snd_dice *dice)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) struct fw_device *device = fw_parent_device(dice->unit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) __be64 *buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) buffer = kmalloc(2 * 8, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (buffer == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) buffer[0] = cpu_to_be64(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) ((u64)device->card->node_id << OWNER_NODE_SHIFT) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) dice->notification_handler.offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) buffer[1] = cpu_to_be64(OWNER_NO_OWNER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) snd_fw_transaction(dice->unit, TCODE_LOCK_COMPARE_SWAP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) get_subaddr(dice, SND_DICE_ADDR_TYPE_GLOBAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) GLOBAL_OWNER),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) buffer, 2 * 8, FW_QUIET |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) FW_FIXED_GENERATION | dice->owner_generation);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) kfree(buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) dice->owner_generation = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) void snd_dice_transaction_destroy(struct snd_dice *dice)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) struct fw_address_handler *handler = &dice->notification_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) if (handler->callback_data == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) unregister_notification_address(dice);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) fw_core_remove_address_handler(handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) handler->callback_data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) int snd_dice_transaction_reinit(struct snd_dice *dice)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) struct fw_address_handler *handler = &dice->notification_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) if (handler->callback_data == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) return register_notification_address(dice, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) static int get_subaddrs(struct snd_dice *dice)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) static const int min_values[10] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 10, 0x60 / 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 10, 0x18 / 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 10, 0x18 / 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) __be32 *pointers;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) __be32 version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) u32 data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) pointers = kmalloc_array(ARRAY_SIZE(min_values), sizeof(__be32),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) if (pointers == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) * Check that the sub address spaces exist and are located inside the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) * private address space. The minimum values are chosen so that all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) * minimally required registers are included.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) err = snd_fw_transaction(dice->unit, TCODE_READ_BLOCK_REQUEST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) DICE_PRIVATE_SPACE, pointers,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) sizeof(__be32) * ARRAY_SIZE(min_values), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) for (i = 0; i < ARRAY_SIZE(min_values); ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) data = be32_to_cpu(pointers[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) if (data < min_values[i] || data >= 0x40000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) err = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) if (be32_to_cpu(pointers[1]) > 0x18) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) * Check that the implemented DICE driver specification major
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) * version number matches.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) err = snd_fw_transaction(dice->unit, TCODE_READ_QUADLET_REQUEST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) DICE_PRIVATE_SPACE +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) be32_to_cpu(pointers[0]) * 4 + GLOBAL_VERSION,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) &version, sizeof(version), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) if ((version & cpu_to_be32(0xff000000)) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) cpu_to_be32(0x01000000)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) dev_err(&dice->unit->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) "unknown DICE version: 0x%08x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) be32_to_cpu(version));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) err = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) /* Set up later. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) dice->clock_caps = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) dice->global_offset = be32_to_cpu(pointers[0]) * 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) dice->tx_offset = be32_to_cpu(pointers[2]) * 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) dice->rx_offset = be32_to_cpu(pointers[4]) * 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) /* Old firmware doesn't support these fields. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) if (pointers[7])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) dice->sync_offset = be32_to_cpu(pointers[6]) * 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) if (pointers[9])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) dice->rsrv_offset = be32_to_cpu(pointers[8]) * 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) kfree(pointers);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) int snd_dice_transaction_init(struct snd_dice *dice)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) struct fw_address_handler *handler = &dice->notification_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) err = get_subaddrs(dice);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) /* Allocation callback in address space over host controller */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) handler->length = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) handler->address_callback = dice_notification;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) handler->callback_data = dice;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) err = fw_core_add_address_handler(handler, &fw_high_memory_region);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) handler->callback_data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) /* Register the address space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) err = register_notification_address(dice, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) fw_core_remove_address_handler(handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) handler->callback_data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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