^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2017 HiSilicon Limited, All Rights Reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Author: Gabriele Paoloni <gabriele.paoloni@huawei.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Author: Zhichang Yuan <yuanzhichang@hisilicon.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Author: John Garry <john.garry@huawei.com>
^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) #define pr_fmt(fmt) "LOGIC PIO: " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/logic_pio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/rculist.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/sizes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) /* The unique hardware address list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static LIST_HEAD(io_range_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static DEFINE_MUTEX(io_range_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /* Consider a kernel general helper for this */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define in_range(b, first, len) ((b) >= (first) && (b) < (first) + (len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * logic_pio_register_range - register logical PIO range for a host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * @new_range: pointer to the IO range to be registered.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * Returns 0 on success, the error code in case of failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * If the range already exists, -EEXIST will be returned, which should be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * considered a success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * Register a new IO range node in the IO range list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) int logic_pio_register_range(struct logic_pio_hwaddr *new_range)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct logic_pio_hwaddr *range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) resource_size_t start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) resource_size_t end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) resource_size_t mmio_end = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) resource_size_t iio_sz = MMIO_UPPER_LIMIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) if (!new_range || !new_range->fwnode || !new_range->size ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) (new_range->flags == LOGIC_PIO_INDIRECT && !new_range->ops))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) start = new_range->hw_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) end = new_range->hw_start + new_range->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) mutex_lock(&io_range_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) list_for_each_entry(range, &io_range_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) if (range->fwnode == new_range->fwnode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /* range already there */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) ret = -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) goto end_register;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) if (range->flags == LOGIC_PIO_CPU_MMIO &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) new_range->flags == LOGIC_PIO_CPU_MMIO) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) /* for MMIO ranges we need to check for overlap */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) if (start >= range->hw_start + range->size ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) end < range->hw_start) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) mmio_end = range->io_start + range->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) ret = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) goto end_register;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) } else if (range->flags == LOGIC_PIO_INDIRECT &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) new_range->flags == LOGIC_PIO_INDIRECT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) iio_sz += range->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^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) /* range not registered yet, check for available space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) if (new_range->flags == LOGIC_PIO_CPU_MMIO) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) if (mmio_end + new_range->size - 1 > MMIO_UPPER_LIMIT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) /* if it's too big check if 64K space can be reserved */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (mmio_end + SZ_64K - 1 > MMIO_UPPER_LIMIT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) ret = -E2BIG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) goto end_register;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) new_range->size = SZ_64K;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) pr_warn("Requested IO range too big, new size set to 64K\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) new_range->io_start = mmio_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) } else if (new_range->flags == LOGIC_PIO_INDIRECT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (iio_sz + new_range->size - 1 > IO_SPACE_LIMIT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) ret = -E2BIG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) goto end_register;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) new_range->io_start = iio_sz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) /* invalid flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) goto end_register;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) list_add_tail_rcu(&new_range->list, &io_range_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) end_register:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) mutex_unlock(&io_range_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * logic_pio_unregister_range - unregister a logical PIO range for a host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * @range: pointer to the IO range which has been already registered.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * Unregister a previously-registered IO range node.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) void logic_pio_unregister_range(struct logic_pio_hwaddr *range)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) mutex_lock(&io_range_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) list_del_rcu(&range->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) mutex_unlock(&io_range_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) synchronize_rcu();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^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) * find_io_range_by_fwnode - find logical PIO range for given FW node
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * @fwnode: FW node handle associated with logical PIO range
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * Returns pointer to node on success, NULL otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * Traverse the io_range_list to find the registered node for @fwnode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct logic_pio_hwaddr *find_io_range_by_fwnode(struct fwnode_handle *fwnode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct logic_pio_hwaddr *range, *found_range = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) list_for_each_entry_rcu(range, &io_range_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) if (range->fwnode == fwnode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) found_range = range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) return found_range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) /* Return a registered range given an input PIO token */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static struct logic_pio_hwaddr *find_io_range(unsigned long pio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) struct logic_pio_hwaddr *range, *found_range = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) list_for_each_entry_rcu(range, &io_range_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) if (in_range(pio, range->io_start, range->size)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) found_range = range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) if (!found_range)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) pr_err("PIO entry token 0x%lx invalid\n", pio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) return found_range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * logic_pio_to_hwaddr - translate logical PIO to HW address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * @pio: logical PIO value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * Returns HW address if valid, ~0 otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * Translate the input logical PIO to the corresponding hardware address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) * The input PIO should be unique in the whole logical PIO space.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) resource_size_t logic_pio_to_hwaddr(unsigned long pio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) struct logic_pio_hwaddr *range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) range = find_io_range(pio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) if (range)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) return range->hw_start + pio - range->io_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) return (resource_size_t)~0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * logic_pio_trans_hwaddr - translate HW address to logical PIO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * @fwnode: FW node reference for the host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * @addr: Host-relative HW address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * @size: size to translate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) * Returns Logical PIO value if successful, ~0UL otherwise
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) unsigned long logic_pio_trans_hwaddr(struct fwnode_handle *fwnode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) resource_size_t addr, resource_size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) struct logic_pio_hwaddr *range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) range = find_io_range_by_fwnode(fwnode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) if (!range || range->flags == LOGIC_PIO_CPU_MMIO) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) pr_err("IO range not found or invalid\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) return ~0UL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) if (range->size < size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) pr_err("resource size %pa cannot fit in IO range size %pa\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) &size, &range->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) return ~0UL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) return addr - range->hw_start + range->io_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) unsigned long logic_pio_trans_cpuaddr(resource_size_t addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) struct logic_pio_hwaddr *range;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) list_for_each_entry_rcu(range, &io_range_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) if (range->flags != LOGIC_PIO_CPU_MMIO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) if (in_range(addr, range->hw_start, range->size)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) unsigned long cpuaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) cpuaddr = addr - range->hw_start + range->io_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return cpuaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) pr_err("addr %pa not registered in io_range_list\n", &addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) return ~0UL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) #if defined(CONFIG_INDIRECT_PIO) && defined(PCI_IOBASE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) #define BUILD_LOGIC_IO(bwl, type) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) type logic_in##bwl(unsigned long addr) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) type ret = (type)~0; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) if (addr < MMIO_UPPER_LIMIT) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) ret = _in##bwl(addr); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) } else if (addr >= MMIO_UPPER_LIMIT && addr < IO_SPACE_LIMIT) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) struct logic_pio_hwaddr *entry = find_io_range(addr); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) if (entry) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) ret = entry->ops->in(entry->hostdata, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) addr, sizeof(type)); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) else \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) WARN_ON_ONCE(1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) return ret; \
^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) void logic_out##bwl(type value, unsigned long addr) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (addr < MMIO_UPPER_LIMIT) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) _out##bwl(value, addr); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) } else if (addr >= MMIO_UPPER_LIMIT && addr < IO_SPACE_LIMIT) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) struct logic_pio_hwaddr *entry = find_io_range(addr); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) if (entry) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) entry->ops->out(entry->hostdata, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) addr, value, sizeof(type)); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) else \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) WARN_ON_ONCE(1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) void logic_ins##bwl(unsigned long addr, void *buffer, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) unsigned int count) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) if (addr < MMIO_UPPER_LIMIT) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) reads##bwl(PCI_IOBASE + addr, buffer, count); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) } else if (addr >= MMIO_UPPER_LIMIT && addr < IO_SPACE_LIMIT) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) struct logic_pio_hwaddr *entry = find_io_range(addr); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) if (entry) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) entry->ops->ins(entry->hostdata, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) addr, buffer, sizeof(type), count); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) else \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) WARN_ON_ONCE(1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) } \
^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) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) void logic_outs##bwl(unsigned long addr, const void *buffer, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) unsigned int count) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) if (addr < MMIO_UPPER_LIMIT) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) writes##bwl(PCI_IOBASE + addr, buffer, count); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) } else if (addr >= MMIO_UPPER_LIMIT && addr < IO_SPACE_LIMIT) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) struct logic_pio_hwaddr *entry = find_io_range(addr); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) if (entry) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) entry->ops->outs(entry->hostdata, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) addr, buffer, sizeof(type), count); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) else \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) WARN_ON_ONCE(1); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) } \
^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) BUILD_LOGIC_IO(b, u8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) EXPORT_SYMBOL(logic_inb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) EXPORT_SYMBOL(logic_insb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) EXPORT_SYMBOL(logic_outb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) EXPORT_SYMBOL(logic_outsb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) BUILD_LOGIC_IO(w, u16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) EXPORT_SYMBOL(logic_inw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) EXPORT_SYMBOL(logic_insw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) EXPORT_SYMBOL(logic_outw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) EXPORT_SYMBOL(logic_outsw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) BUILD_LOGIC_IO(l, u32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) EXPORT_SYMBOL(logic_inl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) EXPORT_SYMBOL(logic_insl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) EXPORT_SYMBOL(logic_outl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) EXPORT_SYMBOL(logic_outsl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) #endif /* CONFIG_INDIRECT_PIO && PCI_IOBASE */