1/*- 2 * Based on BSD-licensed source modules in the Linux iwlwifi driver, 3 * which were used as the reference documentation for this implementation. 4 * 5 * Driver version we are currently based off of is 6 * Linux 4.7.3 (tag id d7f6728f57e3ecbb7ef34eb7d9f564d514775d75) 7 * 8 *********************************************************************** 9 * 10 * This file is provided under a dual BSD/GPLv2 license. When using or 11 * redistributing this file, you may do so under either license. 12 * 13 * GPL LICENSE SUMMARY 14 * 15 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 16 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 17 * Copyright(c) 2016 Intel Deutschland GmbH 18 * 19 * This program is free software; you can redistribute it and/or modify 20 * it under the terms of version 2 of the GNU General Public License as 21 * published by the Free Software Foundation. 22 * 23 * This program is distributed in the hope that it will be useful, but 24 * WITHOUT ANY WARRANTY; without even the implied warranty of 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 26 * General Public License for more details. 27 * 28 * You should have received a copy of the GNU General Public License 29 * along with this program; if not, write to the Free Software 30 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 31 * USA 32 * 33 * The full GNU General Public License is included in this distribution 34 * in the file called COPYING. 35 * 36 * Contact Information: 37 * Intel Linux Wireless <linuxwifi@intel.com> 38 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 39 * 40 * BSD LICENSE 41 * 42 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. 43 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 44 * All rights reserved. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 50 * * Redistributions of source code must retain the above copyright 51 * notice, this list of conditions and the following disclaimer. 52 * * Redistributions in binary form must reproduce the above copyright 53 * notice, this list of conditions and the following disclaimer in 54 * the documentation and/or other materials provided with the 55 * distribution. 56 * * Neither the name Intel Corporation nor the names of its 57 * contributors may be used to endorse or promote products derived 58 * from this software without specific prior written permission. 59 * 60 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 61 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 62 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 63 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 64 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 65 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 66 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 67 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 68 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 69 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 70 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 71 */ 72 73#include <sys/cdefs.h> 74#include "opt_wlan.h" 75#include "opt_iwm.h" 76 77#include <sys/param.h> 78#include <sys/bus.h> 79#include <sys/conf.h> 80#include <sys/endian.h> 81#include <sys/firmware.h> 82#include <sys/kernel.h> 83#include <sys/malloc.h> 84#include <sys/mbuf.h> 85#include <sys/mutex.h> 86#include <sys/module.h> 87#include <sys/proc.h> 88#include <sys/rman.h> 89#include <sys/socket.h> 90#include <sys/sockio.h> 91#include <sys/sysctl.h> 92#include <sys/linker.h> 93 94#include <machine/bus.h> 95#include <machine/endian.h> 96#include <machine/resource.h> 97 98#include <dev/pci/pcivar.h> 99#include <dev/pci/pcireg.h> 100 101#include <net/bpf.h> 102 103#include <net/if.h> 104#include <net/if_var.h> 105#include <net/if_arp.h> 106#include <net/if_dl.h> 107#include <net/if_media.h> 108#include <net/if_types.h> 109 110#include <netinet/in.h> 111#include <netinet/in_systm.h> 112#include <netinet/if_ether.h> 113#include <netinet/ip.h> 114 115#include <net80211/ieee80211_var.h> 116#include <net80211/ieee80211_regdomain.h> 117#include <net80211/ieee80211_ratectl.h> 118#include <net80211/ieee80211_radiotap.h> 119 120#include <dev/iwm/if_iwmreg.h> 121#include <dev/iwm/if_iwmvar.h> 122#include <dev/iwm/if_iwm_debug.h> 123#include <dev/iwm/if_iwm_util.h> 124#include <dev/iwm/if_iwm_fw.h> 125 126void 127iwm_free_fw_paging(struct iwm_softc *sc) 128{ 129 int i; 130 131 if (sc->fw_paging_db[0].fw_paging_block.vaddr == NULL) 132 return; 133 134 for (i = 0; i < IWM_NUM_OF_FW_PAGING_BLOCKS; i++) { 135 iwm_dma_contig_free(&sc->fw_paging_db[i].fw_paging_block); 136 } 137 138 memset(sc->fw_paging_db, 0, sizeof(sc->fw_paging_db)); 139} 140 141static int 142iwm_fill_paging_mem(struct iwm_softc *sc, const struct iwm_fw_img *image) 143{ 144 int sec_idx, idx; 145 uint32_t offset = 0; 146 147 /* 148 * find where is the paging image start point: 149 * if CPU2 exist and it's in paging format, then the image looks like: 150 * CPU1 sections (2 or more) 151 * CPU1_CPU2_SEPARATOR_SECTION delimiter - separate between CPU1 to CPU2 152 * CPU2 sections (not paged) 153 * PAGING_SEPARATOR_SECTION delimiter - separate between CPU2 154 * non paged to CPU2 paging sec 155 * CPU2 paging CSS 156 * CPU2 paging image (including instruction and data) 157 */ 158 for (sec_idx = 0; sec_idx < IWM_UCODE_SECTION_MAX; sec_idx++) { 159 if (image->sec[sec_idx].offset == IWM_PAGING_SEPARATOR_SECTION) { 160 sec_idx++; 161 break; 162 } 163 } 164 165 /* 166 * If paging is enabled there should be at least 2 more sections left 167 * (one for CSS and one for Paging data) 168 */ 169 if (sec_idx >= nitems(image->sec) - 1) { 170 device_printf(sc->sc_dev, 171 "Paging: Missing CSS and/or paging sections\n"); 172 iwm_free_fw_paging(sc); 173 return EINVAL; 174 } 175 176 /* copy the CSS block to the dram */ 177 IWM_DPRINTF(sc, IWM_DEBUG_FW, 178 "Paging: load paging CSS to FW, sec = %d\n", 179 sec_idx); 180 181 memcpy(sc->fw_paging_db[0].fw_paging_block.vaddr, 182 image->sec[sec_idx].data, 183 sc->fw_paging_db[0].fw_paging_size); 184 185 IWM_DPRINTF(sc, IWM_DEBUG_FW, 186 "Paging: copied %d CSS bytes to first block\n", 187 sc->fw_paging_db[0].fw_paging_size); 188 189 sec_idx++; 190 191 /* 192 * copy the paging blocks to the dram 193 * loop index start from 1 since that CSS block already copied to dram 194 * and CSS index is 0. 195 * loop stop at num_of_paging_blk since that last block is not full. 196 */ 197 for (idx = 1; idx < sc->num_of_paging_blk; idx++) { 198 memcpy(sc->fw_paging_db[idx].fw_paging_block.vaddr, 199 (const char *)image->sec[sec_idx].data + offset, 200 sc->fw_paging_db[idx].fw_paging_size); 201 202 IWM_DPRINTF(sc, IWM_DEBUG_FW, 203 "Paging: copied %d paging bytes to block %d\n", 204 sc->fw_paging_db[idx].fw_paging_size, 205 idx); 206 207 offset += sc->fw_paging_db[idx].fw_paging_size; 208 } 209 210 /* copy the last paging block */ 211 if (sc->num_of_pages_in_last_blk > 0) { 212 memcpy(sc->fw_paging_db[idx].fw_paging_block.vaddr, 213 (const char *)image->sec[sec_idx].data + offset, 214 IWM_FW_PAGING_SIZE * sc->num_of_pages_in_last_blk); 215 216 IWM_DPRINTF(sc, IWM_DEBUG_FW, 217 "Paging: copied %d pages in the last block %d\n", 218 sc->num_of_pages_in_last_blk, idx); 219 } 220 221 return 0; 222} 223 224static int 225iwm_alloc_fw_paging_mem(struct iwm_softc *sc, const struct iwm_fw_img *image) 226{ 227 int blk_idx = 0; 228 int error, num_of_pages; 229 230 if (sc->fw_paging_db[0].fw_paging_block.vaddr != NULL) { 231 int i; 232 /* Device got reset, and we setup firmware paging again */ 233 for (i = 0; i < sc->num_of_paging_blk + 1; i++) { 234 bus_dmamap_sync(sc->sc_dmat, 235 sc->fw_paging_db[i].fw_paging_block.map, 236 BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD); 237 } 238 return 0; 239 } 240 241 /* ensure IWM_BLOCK_2_EXP_SIZE is power of 2 of IWM_PAGING_BLOCK_SIZE */ 242 _Static_assert((1 << IWM_BLOCK_2_EXP_SIZE) == IWM_PAGING_BLOCK_SIZE, 243 "IWM_BLOCK_2_EXP_SIZE must be power of 2 of IWM_PAGING_BLOCK_SIZE"); 244 245 num_of_pages = image->paging_mem_size / IWM_FW_PAGING_SIZE; 246 sc->num_of_paging_blk = ((num_of_pages - 1) / 247 IWM_NUM_OF_PAGE_PER_GROUP) + 1; 248 249 sc->num_of_pages_in_last_blk = 250 num_of_pages - 251 IWM_NUM_OF_PAGE_PER_GROUP * (sc->num_of_paging_blk - 1); 252 253 IWM_DPRINTF(sc, IWM_DEBUG_FW, 254 "Paging: allocating mem for %d paging blocks, each block holds 8 pages, last block holds %d pages\n", 255 sc->num_of_paging_blk, 256 sc->num_of_pages_in_last_blk); 257 258 /* allocate block of 4Kbytes for paging CSS */ 259 error = iwm_dma_contig_alloc(sc->sc_dmat, 260 &sc->fw_paging_db[blk_idx].fw_paging_block, IWM_FW_PAGING_SIZE, 261 4096); 262 if (error) { 263 /* free all the previous pages since we failed */ 264 iwm_free_fw_paging(sc); 265 return ENOMEM; 266 } 267 268 sc->fw_paging_db[blk_idx].fw_paging_size = IWM_FW_PAGING_SIZE; 269 270 IWM_DPRINTF(sc, IWM_DEBUG_FW, 271 "Paging: allocated 4K(CSS) bytes for firmware paging.\n"); 272 273 /* 274 * allocate blocks in dram. 275 * since that CSS allocated in fw_paging_db[0] loop start from index 1 276 */ 277 for (blk_idx = 1; blk_idx < sc->num_of_paging_blk + 1; blk_idx++) { 278 /* allocate block of IWM_PAGING_BLOCK_SIZE (32K) */ 279 /* XXX Use iwm_dma_contig_alloc for allocating */ 280 error = iwm_dma_contig_alloc(sc->sc_dmat, 281 &sc->fw_paging_db[blk_idx].fw_paging_block, 282 IWM_PAGING_BLOCK_SIZE, 4096); 283 if (error) { 284 /* free all the previous pages since we failed */ 285 iwm_free_fw_paging(sc); 286 return ENOMEM; 287 } 288 289 sc->fw_paging_db[blk_idx].fw_paging_size = IWM_PAGING_BLOCK_SIZE; 290 291 IWM_DPRINTF(sc, IWM_DEBUG_FW, 292 "Paging: allocated 32K bytes for firmware paging.\n"); 293 } 294 295 return 0; 296} 297 298int 299iwm_save_fw_paging(struct iwm_softc *sc, const struct iwm_fw_img *fw) 300{ 301 int ret; 302 303 ret = iwm_alloc_fw_paging_mem(sc, fw); 304 if (ret) 305 return ret; 306 307 return iwm_fill_paging_mem(sc, fw); 308} 309 310/* send paging cmd to FW in case CPU2 has paging image */ 311int 312iwm_send_paging_cmd(struct iwm_softc *sc, const struct iwm_fw_img *fw) 313{ 314 int blk_idx; 315 uint32_t dev_phy_addr; 316 struct iwm_fw_paging_cmd fw_paging_cmd = { 317 .flags = 318 htole32(IWM_PAGING_CMD_IS_SECURED | 319 IWM_PAGING_CMD_IS_ENABLED | 320 (sc->num_of_pages_in_last_blk << 321 IWM_PAGING_CMD_NUM_OF_PAGES_IN_LAST_GRP_POS)), 322 .block_size = htole32(IWM_BLOCK_2_EXP_SIZE), 323 .block_num = htole32(sc->num_of_paging_blk), 324 }; 325 326 /* loop for all paging blocks + CSS block */ 327 for (blk_idx = 0; blk_idx < sc->num_of_paging_blk + 1; blk_idx++) { 328 dev_phy_addr = htole32( 329 sc->fw_paging_db[blk_idx].fw_paging_block.paddr >> 330 IWM_PAGE_2_EXP_SIZE); 331 fw_paging_cmd.device_phy_addr[blk_idx] = dev_phy_addr; 332 bus_dmamap_sync(sc->sc_dmat, 333 sc->fw_paging_db[blk_idx].fw_paging_block.map, 334 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 335 } 336 337 return iwm_send_cmd_pdu(sc, iwm_cmd_id(IWM_FW_PAGING_BLOCK_CMD, 338 IWM_ALWAYS_LONG_GROUP, 0), 339 0, sizeof(fw_paging_cmd), &fw_paging_cmd); 340} 341