ref: 0.13.0
src/libs/mynewt-nimble/nimble/transport/da1469x/src/da1469x_ble_hci.c
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 |
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ #include <assert.h> #include <string.h> #include "os/mynewt.h" #include "nimble/ble.h" #include "nimble/ble_hci_trans.h" #include "nimble/hci_common.h" #include "cmac_driver/cmac_host.h" #define HCI_PKT_NONE 0x00 #define HCI_PKT_CMD 0x01 #define HCI_PKT_ACL 0x02 #define HCI_PKT_EVT 0x04 #define POOL_ACL_BLOCK_SIZE \ OS_ALIGN(MYNEWT_VAL(BLE_ACL_BUF_SIZE) + \ BLE_MBUF_MEMBLOCK_OVERHEAD + \ BLE_HCI_DATA_HDR_SZ, OS_ALIGNMENT) struct da1469x_ble_hci_host_api { ble_hci_trans_rx_cmd_fn *evt_cb; void *evt_arg; ble_hci_trans_rx_acl_fn *acl_cb; void *acl_arg; }; struct da1469x_ble_hci_rx_data { uint8_t type; uint8_t hdr[4]; uint8_t min_len; uint16_t len; uint16_t expected_len; union { uint8_t *buf; struct os_mbuf *om; }; }; struct da1469x_ble_hci_pool_cmd { uint8_t cmd[BLE_HCI_TRANS_CMD_SZ]; bool allocated; }; /* (Pseudo)pool for HCI commands */ static struct da1469x_ble_hci_pool_cmd da1469x_ble_hci_pool_cmd; /* Pools for HCI events (high and low priority) */ static uint8_t da1469x_ble_hci_pool_evt_hi_buf[ OS_MEMPOOL_BYTES( MYNEWT_VAL(BLE_HCI_EVT_HI_BUF_COUNT), MYNEWT_VAL(BLE_HCI_EVT_BUF_SIZE)) ]; static struct os_mempool da1469x_ble_hci_pool_evt_hi; static uint8_t da1469x_ble_hci_pool_evt_lo_buf[ OS_MEMPOOL_BYTES( MYNEWT_VAL(BLE_HCI_EVT_LO_BUF_COUNT), MYNEWT_VAL(BLE_HCI_EVT_BUF_SIZE)) ]; static struct os_mempool da1469x_ble_hci_pool_evt_lo; /* Pool for ACL data */ static uint8_t da1469x_ble_hci_pool_acl_buf[ OS_MEMPOOL_BYTES( MYNEWT_VAL(BLE_ACL_BUF_COUNT), POOL_ACL_BLOCK_SIZE) ]; static struct os_mempool da1469x_ble_hci_pool_acl; static struct os_mbuf_pool da1469x_ble_hci_pool_acl_mbuf; /* Interface to host */ static struct da1469x_ble_hci_host_api da1469x_ble_hci_host_api; /* State of RX currently in progress (needs to reassemble frame) */ static struct da1469x_ble_hci_rx_data da1469x_ble_hci_rx_data; int ble_hci_trans_reset(void) { /* XXX Should we do something with RF and/or BLE core? */ return 0; } void ble_hci_trans_cfg_hs(ble_hci_trans_rx_cmd_fn *evt_cb, void *evt_arg, ble_hci_trans_rx_acl_fn *acl_cb, void *acl_arg) { da1469x_ble_hci_host_api.evt_cb = evt_cb; da1469x_ble_hci_host_api.evt_arg = evt_arg; da1469x_ble_hci_host_api.acl_cb = acl_cb; da1469x_ble_hci_host_api.acl_arg = acl_arg; } uint8_t * ble_hci_trans_buf_alloc(int type) { uint8_t *buf; switch (type) { case BLE_HCI_TRANS_BUF_CMD: assert(!da1469x_ble_hci_pool_cmd.allocated); da1469x_ble_hci_pool_cmd.allocated = 1; buf = da1469x_ble_hci_pool_cmd.cmd; break; case BLE_HCI_TRANS_BUF_EVT_HI: buf = os_memblock_get(&da1469x_ble_hci_pool_evt_hi); if (buf) { break; } /* no break */ case BLE_HCI_TRANS_BUF_EVT_LO: buf = os_memblock_get(&da1469x_ble_hci_pool_evt_lo); break; default: assert(0); buf = NULL; } return buf; } void ble_hci_trans_buf_free(uint8_t *buf) { int rc; if (buf == da1469x_ble_hci_pool_cmd.cmd) { assert(da1469x_ble_hci_pool_cmd.allocated); da1469x_ble_hci_pool_cmd.allocated = 0; } else if (os_memblock_from(&da1469x_ble_hci_pool_evt_hi, buf)) { rc = os_memblock_put(&da1469x_ble_hci_pool_evt_hi, buf); assert(rc == 0); } else { assert(os_memblock_from(&da1469x_ble_hci_pool_evt_lo, buf)); rc = os_memblock_put(&da1469x_ble_hci_pool_evt_lo, buf); assert(rc == 0); } } int ble_hci_trans_hs_cmd_tx(uint8_t *cmd) { uint8_t ind = HCI_PKT_CMD; int len = 3 + cmd[2]; cmac_mbox_write(&ind, 1); cmac_mbox_write(cmd, len); ble_hci_trans_buf_free(cmd); return 0; } int ble_hci_trans_hs_acl_tx(struct os_mbuf *om) { uint8_t ind = HCI_PKT_ACL; struct os_mbuf *x; cmac_mbox_write(&ind, 1); x = om; while (x) { cmac_mbox_write(x->om_data, x->om_len); x = SLIST_NEXT(x, om_next); } os_mbuf_free_chain(om); return 0; } static int da1469x_ble_hci_trans_ll_rx(const uint8_t *buf, uint16_t len) { struct da1469x_ble_hci_rx_data *rxd = &da1469x_ble_hci_rx_data; void *data; int pool = BLE_HCI_TRANS_BUF_EVT_HI; int rc; assert(len); if (rxd->type == HCI_PKT_NONE) { rxd->type = buf[0]; rxd->len = 0; rxd->expected_len = 0; switch (rxd->type) { case HCI_PKT_ACL: rxd->min_len = 4; break; case HCI_PKT_EVT: rxd->min_len = 2; break; default: assert(0); break; } return 1; } /* Ensure we have minimum length of bytes required to process header */ if (rxd->len < rxd->min_len) { len = min(len, rxd->min_len - rxd->len); memcpy(&rxd->hdr[rxd->len], buf, len); rxd->len += len; return len; } /* Parse header and allocate proper buffer if not done yet */ if (rxd->expected_len == 0) { switch (rxd->type) { case HCI_PKT_ACL: data = os_mbuf_get_pkthdr(&da1469x_ble_hci_pool_acl_mbuf, sizeof(struct ble_mbuf_hdr)); if (!data) { return 0; } rxd->om = data; os_mbuf_append(rxd->om, rxd->hdr, rxd->len); rxd->expected_len = get_le16(&rxd->hdr[2]) + 4; break; case HCI_PKT_EVT: if (rxd->hdr[0] == BLE_HCI_EVCODE_LE_META) { /* For LE Meta event we need 3 bytes to parse header */ if (rxd->min_len < 3) { rxd->min_len = 3; return 0; } /* Advertising reports shall be allocated from low-prio pool */ if ((rxd->hdr[2] == BLE_HCI_LE_SUBEV_ADV_RPT) || (rxd->hdr[2] == BLE_HCI_LE_SUBEV_EXT_ADV_RPT)) { pool = BLE_HCI_TRANS_BUF_EVT_LO; } } data = ble_hci_trans_buf_alloc(pool); if (!data) { /* * Only care about valid buffer when shall be allocated from * high-prio pool, otherwise NULL is fine and we'll just skip * this event. */ if (pool != BLE_HCI_TRANS_BUF_EVT_LO) { data = ble_hci_trans_buf_alloc(BLE_HCI_TRANS_BUF_EVT_LO); if (!data) { return 0; } } } rxd->buf = data; memcpy(rxd->buf, rxd->hdr, rxd->len); rxd->expected_len = rxd->hdr[1] + 2; break; default: assert(0); return len; } } len = min(len, rxd->expected_len - rxd->len); switch (rxd->type) { case HCI_PKT_ACL: os_mbuf_append(rxd->om, buf, len); rxd->len += len; if (rxd->len == rxd->expected_len) { rc = da1469x_ble_hci_host_api.acl_cb(rxd->om, da1469x_ble_hci_host_api.acl_arg); if (rc != 0) { os_mbuf_free_chain(rxd->om); } rxd->type = HCI_PKT_NONE; } break; case HCI_PKT_EVT: if (rxd->buf) { memcpy(&rxd->buf[rxd->len], buf, len); } rxd->len += len; if (rxd->len == rxd->expected_len) { /* * XXX for unknown reason at startup controller sends command * complete for a vendor specific command which we never sent * and this messes up with our ack code - just discard this * event */ if ((rxd->buf[0] == 0x0E) && (get_le16(&rxd->buf[3]) == 0xfc11)) { ble_hci_trans_buf_free(rxd->buf); } else if (rxd->buf) { rc = da1469x_ble_hci_host_api.evt_cb(rxd->buf, da1469x_ble_hci_host_api.evt_arg); if (rc != 0) { ble_hci_trans_buf_free(rxd->buf); } } rxd->type = HCI_PKT_NONE; } break; default: assert(0); break; } return len; } static int da1469x_ble_hci_read_cb(const uint8_t *buf, uint16_t len) { return da1469x_ble_hci_trans_ll_rx(buf, len); } void da1469x_ble_hci_init(void) { int rc; SYSINIT_ASSERT_ACTIVE(); rc = os_mempool_init(&da1469x_ble_hci_pool_acl, MYNEWT_VAL(BLE_ACL_BUF_COUNT), POOL_ACL_BLOCK_SIZE, da1469x_ble_hci_pool_acl_buf, "da1469x_ble_hci_pool_acl"); SYSINIT_PANIC_ASSERT(rc == 0); rc = os_mbuf_pool_init(&da1469x_ble_hci_pool_acl_mbuf, &da1469x_ble_hci_pool_acl, POOL_ACL_BLOCK_SIZE, MYNEWT_VAL(BLE_ACL_BUF_COUNT)); SYSINIT_PANIC_ASSERT(rc == 0); rc = os_mempool_init(&da1469x_ble_hci_pool_evt_hi, MYNEWT_VAL(BLE_HCI_EVT_HI_BUF_COUNT), MYNEWT_VAL(BLE_HCI_EVT_BUF_SIZE), da1469x_ble_hci_pool_evt_hi_buf, "da1469x_ble_hci_pool_evt_hi"); SYSINIT_PANIC_ASSERT(rc == 0); rc = os_mempool_init(&da1469x_ble_hci_pool_evt_lo, MYNEWT_VAL(BLE_HCI_EVT_LO_BUF_COUNT), MYNEWT_VAL(BLE_HCI_EVT_BUF_SIZE), da1469x_ble_hci_pool_evt_lo_buf, "da1469x_ble_hci_pool_evt_lo"); SYSINIT_PANIC_ASSERT(rc == 0); } void da1469x_ble_hci_cmac_init(void) { cmac_mbox_set_read_cb(da1469x_ble_hci_read_cb); cmac_host_init(); } |