^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) * NFC hardware simulation driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (c) 2013, Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/debugfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/nfc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <net/nfc/nfc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <net/nfc/digital.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define NFCSIM_ERR(d, fmt, args...) nfc_err(&d->nfc_digital_dev->nfc_dev->dev, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) "%s: " fmt, __func__, ## args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define NFCSIM_DBG(d, fmt, args...) dev_dbg(&d->nfc_digital_dev->nfc_dev->dev, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) "%s: " fmt, __func__, ## args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define NFCSIM_VERSION "0.2"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define NFCSIM_MODE_NONE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define NFCSIM_MODE_INITIATOR 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define NFCSIM_MODE_TARGET 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define NFCSIM_CAPABILITIES (NFC_DIGITAL_DRV_CAPS_IN_CRC | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) NFC_DIGITAL_DRV_CAPS_TG_CRC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct nfcsim {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct nfc_digital_dev *nfc_digital_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) struct work_struct recv_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct delayed_work send_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct nfcsim_link *link_in;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct nfcsim_link *link_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) bool up;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) u8 mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) u8 rf_tech;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) u16 recv_timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) nfc_digital_cmd_complete_t cb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) void *arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) u8 dropframe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct nfcsim_link {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct mutex lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) u8 rf_tech;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) u8 mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) u8 shutdown;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) wait_queue_head_t recv_wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) u8 cond;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static struct nfcsim_link *nfcsim_link_new(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) struct nfcsim_link *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) link = kzalloc(sizeof(struct nfcsim_link), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) if (!link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) mutex_init(&link->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) init_waitqueue_head(&link->recv_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static void nfcsim_link_free(struct nfcsim_link *link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) dev_kfree_skb(link->skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) kfree(link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static void nfcsim_link_recv_wake(struct nfcsim_link *link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) link->cond = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) wake_up_interruptible(&link->recv_wait);
^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) static void nfcsim_link_set_skb(struct nfcsim_link *link, struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) u8 rf_tech, u8 mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) mutex_lock(&link->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) dev_kfree_skb(link->skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) link->skb = skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) link->rf_tech = rf_tech;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) link->mode = mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) mutex_unlock(&link->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static void nfcsim_link_recv_cancel(struct nfcsim_link *link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) mutex_lock(&link->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) link->mode = NFCSIM_MODE_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) mutex_unlock(&link->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) nfcsim_link_recv_wake(link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static void nfcsim_link_shutdown(struct nfcsim_link *link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) mutex_lock(&link->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) link->shutdown = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) link->mode = NFCSIM_MODE_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) mutex_unlock(&link->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) nfcsim_link_recv_wake(link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) static struct sk_buff *nfcsim_link_recv_skb(struct nfcsim_link *link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) int timeout, u8 rf_tech, u8 mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) rc = wait_event_interruptible_timeout(link->recv_wait,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) link->cond,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) msecs_to_jiffies(timeout));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) mutex_lock(&link->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) skb = link->skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) link->skb = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (!rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) rc = -ETIMEDOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) if (!skb || link->rf_tech != rf_tech || link->mode == mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) if (link->shutdown) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) rc = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) mutex_unlock(&link->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) if (rc < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) dev_kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) skb = ERR_PTR(rc);
^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) link->cond = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) return skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) static void nfcsim_send_wq(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) struct nfcsim *dev = container_of(work, struct nfcsim, send_work.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * To effectively send data, the device just wake up its link_out which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * is the link_in of the peer device. The exchanged skb has already been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * stored in the dev->link_out through nfcsim_link_set_skb().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) nfcsim_link_recv_wake(dev->link_out);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) static void nfcsim_recv_wq(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) struct nfcsim *dev = container_of(work, struct nfcsim, recv_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) skb = nfcsim_link_recv_skb(dev->link_in, dev->recv_timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) dev->rf_tech, dev->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) if (!dev->up) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) NFCSIM_ERR(dev, "Device is down\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (!IS_ERR(skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) dev_kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) dev->cb(dev->nfc_digital_dev, dev->arg, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) static int nfcsim_send(struct nfc_digital_dev *ddev, struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) u16 timeout, nfc_digital_cmd_complete_t cb, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) struct nfcsim *dev = nfc_digital_get_drvdata(ddev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) u8 delay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (!dev->up) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) NFCSIM_ERR(dev, "Device is down\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) dev->recv_timeout = timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) dev->cb = cb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) dev->arg = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) schedule_work(&dev->recv_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) if (dev->dropframe) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) NFCSIM_DBG(dev, "dropping frame (out of %d)\n", dev->dropframe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) dev_kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) dev->dropframe--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) if (skb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) nfcsim_link_set_skb(dev->link_out, skb, dev->rf_tech,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) dev->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) /* Add random delay (between 3 and 10 ms) before sending data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) get_random_bytes(&delay, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) delay = 3 + (delay & 0x07);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) schedule_delayed_work(&dev->send_work, msecs_to_jiffies(delay));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) static void nfcsim_abort_cmd(struct nfc_digital_dev *ddev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) struct nfcsim *dev = nfc_digital_get_drvdata(ddev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) nfcsim_link_recv_cancel(dev->link_in);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) static int nfcsim_switch_rf(struct nfc_digital_dev *ddev, bool on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) struct nfcsim *dev = nfc_digital_get_drvdata(ddev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) dev->up = on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) static int nfcsim_in_configure_hw(struct nfc_digital_dev *ddev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) int type, int param)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) struct nfcsim *dev = nfc_digital_get_drvdata(ddev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) case NFC_DIGITAL_CONFIG_RF_TECH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) dev->up = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) dev->mode = NFCSIM_MODE_INITIATOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) dev->rf_tech = param;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) case NFC_DIGITAL_CONFIG_FRAMING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) NFCSIM_ERR(dev, "Invalid configuration type: %d\n", type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) static int nfcsim_in_send_cmd(struct nfc_digital_dev *ddev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) struct sk_buff *skb, u16 timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) nfc_digital_cmd_complete_t cb, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) return nfcsim_send(ddev, skb, timeout, cb, arg);
^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) static int nfcsim_tg_configure_hw(struct nfc_digital_dev *ddev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) int type, int param)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) struct nfcsim *dev = nfc_digital_get_drvdata(ddev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) case NFC_DIGITAL_CONFIG_RF_TECH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) dev->up = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) dev->mode = NFCSIM_MODE_TARGET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) dev->rf_tech = param;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) case NFC_DIGITAL_CONFIG_FRAMING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) NFCSIM_ERR(dev, "Invalid configuration type: %d\n", type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) static int nfcsim_tg_send_cmd(struct nfc_digital_dev *ddev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) struct sk_buff *skb, u16 timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) nfc_digital_cmd_complete_t cb, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) return nfcsim_send(ddev, skb, timeout, cb, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) static int nfcsim_tg_listen(struct nfc_digital_dev *ddev, u16 timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) nfc_digital_cmd_complete_t cb, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) return nfcsim_send(ddev, NULL, timeout, cb, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) static struct nfc_digital_ops nfcsim_digital_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) .in_configure_hw = nfcsim_in_configure_hw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) .in_send_cmd = nfcsim_in_send_cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) .tg_listen = nfcsim_tg_listen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) .tg_configure_hw = nfcsim_tg_configure_hw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) .tg_send_cmd = nfcsim_tg_send_cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) .abort_cmd = nfcsim_abort_cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) .switch_rf = nfcsim_switch_rf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) static struct dentry *nfcsim_debugfs_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) static void nfcsim_debugfs_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) nfcsim_debugfs_root = debugfs_create_dir("nfcsim", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) if (!nfcsim_debugfs_root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) pr_err("Could not create debugfs entry\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) static void nfcsim_debugfs_remove(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) debugfs_remove_recursive(nfcsim_debugfs_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) static void nfcsim_debugfs_init_dev(struct nfcsim *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) struct dentry *dev_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) char devname[5]; /* nfcX\0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) u32 idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) int n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) if (!nfcsim_debugfs_root) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) NFCSIM_ERR(dev, "nfcsim debugfs not initialized\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) idx = dev->nfc_digital_dev->nfc_dev->idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) n = snprintf(devname, sizeof(devname), "nfc%d", idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) if (n >= sizeof(devname)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) NFCSIM_ERR(dev, "Could not compute dev name for dev %d\n", idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) dev_dir = debugfs_create_dir(devname, nfcsim_debugfs_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) if (!dev_dir) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) NFCSIM_ERR(dev, "Could not create debugfs entries for nfc%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) debugfs_create_u8("dropframe", 0664, dev_dir, &dev->dropframe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) static struct nfcsim *nfcsim_device_new(struct nfcsim_link *link_in,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) struct nfcsim_link *link_out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) struct nfcsim *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) dev = kzalloc(sizeof(struct nfcsim), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) if (!dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) INIT_DELAYED_WORK(&dev->send_work, nfcsim_send_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) INIT_WORK(&dev->recv_work, nfcsim_recv_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) dev->nfc_digital_dev =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) nfc_digital_allocate_device(&nfcsim_digital_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) NFC_PROTO_NFC_DEP_MASK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) NFCSIM_CAPABILITIES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) if (!dev->nfc_digital_dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) kfree(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) nfc_digital_set_drvdata(dev->nfc_digital_dev, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) dev->link_in = link_in;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) dev->link_out = link_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) rc = nfc_digital_register_device(dev->nfc_digital_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) pr_err("Could not register digital device (%d)\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) nfc_digital_free_device(dev->nfc_digital_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) kfree(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) return ERR_PTR(rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) nfcsim_debugfs_init_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) return dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) static void nfcsim_device_free(struct nfcsim *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) nfc_digital_unregister_device(dev->nfc_digital_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) dev->up = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) nfcsim_link_shutdown(dev->link_in);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) cancel_delayed_work_sync(&dev->send_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) cancel_work_sync(&dev->recv_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) nfc_digital_free_device(dev->nfc_digital_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) kfree(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) static struct nfcsim *dev0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) static struct nfcsim *dev1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) static int __init nfcsim_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) struct nfcsim_link *link0, *link1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) link0 = nfcsim_link_new();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) link1 = nfcsim_link_new();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) if (!link0 || !link1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) goto exit_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) nfcsim_debugfs_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) dev0 = nfcsim_device_new(link0, link1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) if (IS_ERR(dev0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) rc = PTR_ERR(dev0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) goto exit_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) dev1 = nfcsim_device_new(link1, link0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) if (IS_ERR(dev1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) nfcsim_device_free(dev0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) rc = PTR_ERR(dev1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) goto exit_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) pr_info("nfcsim " NFCSIM_VERSION " initialized\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) exit_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) pr_err("Failed to initialize nfcsim driver (%d)\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) if (link0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) nfcsim_link_free(link0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) if (link1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) nfcsim_link_free(link1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) static void __exit nfcsim_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) struct nfcsim_link *link0, *link1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) link0 = dev0->link_in;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) link1 = dev0->link_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) nfcsim_device_free(dev0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) nfcsim_device_free(dev1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) nfcsim_link_free(link0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) nfcsim_link_free(link1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) nfcsim_debugfs_remove();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) module_init(nfcsim_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) module_exit(nfcsim_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) MODULE_DESCRIPTION("NFCSim driver ver " NFCSIM_VERSION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) MODULE_VERSION(NFCSIM_VERSION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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