drivers/net/wireless/marvell/mwifiex/sdio.c

   1 /*
   2  * NXP Wireless LAN device driver: SDIO specific handling
   3  *
   4  * Copyright 2011-2020 NXP
   5  *
   6  * This software file (the "File") is distributed by NXP
   7  * under the terms of the GNU General Public License Version 2, June 1991
   8  * (the "License").  You may use, redistribute and/or modify this File in
   9  * accordance with the terms and conditions of the License, a copy of which
  10  * is available by writing to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13  *
  14  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  17  * this warranty disclaimer.
  18  */
  19
  20 #include <linux/firmware.h>
  21
  22 #include "decl.h"
  23 #include "ioctl.h"
  24 #include "util.h"
  25 #include "fw.h"
  26 #include "main.h"
  27 #include "wmm.h"
  28 #include "11n.h"
  29 #include "sdio.h"
  30
  31
  32 #define SDIO_VERSION    "1.0"
  33
  34 static void mwifiex_sdio_work(struct work_struct *work);
  35
  36 static struct mwifiex_if_ops sdio_ops;
  37
  38 static const struct mwifiex_sdio_card_reg mwifiex_reg_sd87xx = {
  39         .start_rd_port = 1,
  40         .start_wr_port = 1,
  41         .base_0_reg = 0x0040,
  42         .base_1_reg = 0x0041,
  43         .poll_reg = 0x30,
  44         .host_int_enable = UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK,
  45         .host_int_rsr_reg = 0x1,
  46         .host_int_mask_reg = 0x02,
  47         .host_int_status_reg = 0x03,
  48         .status_reg_0 = 0x60,
  49         .status_reg_1 = 0x61,
  50         .sdio_int_mask = 0x3f,
  51         .data_port_mask = 0x0000fffe,
  52         .io_port_0_reg = 0x78,
  53         .io_port_1_reg = 0x79,
  54         .io_port_2_reg = 0x7A,
  55         .max_mp_regs = 64,
  56         .rd_bitmap_l = 0x04,
  57         .rd_bitmap_u = 0x05,
  58         .wr_bitmap_l = 0x06,
  59         .wr_bitmap_u = 0x07,
  60         .rd_len_p0_l = 0x08,
  61         .rd_len_p0_u = 0x09,
  62         .card_misc_cfg_reg = 0x6c,
  63         .func1_dump_reg_start = 0x0,
  64         .func1_dump_reg_end = 0x9,
  65         .func1_scratch_reg = 0x60,
  66         .func1_spec_reg_num = 5,
  67         .func1_spec_reg_table = {0x28, 0x30, 0x34, 0x38, 0x3c},
  68 };
  69
  70 static const struct mwifiex_sdio_card_reg mwifiex_reg_sd8897 = {
  71         .start_rd_port = 0,
  72         .start_wr_port = 0,
  73         .base_0_reg = 0x60,
  74         .base_1_reg = 0x61,
  75         .poll_reg = 0x50,
  76         .host_int_enable = UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK |
  77                         CMD_PORT_UPLD_INT_MASK | CMD_PORT_DNLD_INT_MASK,
  78         .host_int_rsr_reg = 0x1,
  79         .host_int_status_reg = 0x03,
  80         .host_int_mask_reg = 0x02,
  81         .status_reg_0 = 0xc0,
  82         .status_reg_1 = 0xc1,
  83         .sdio_int_mask = 0xff,
  84         .data_port_mask = 0xffffffff,
  85         .io_port_0_reg = 0xD8,
  86         .io_port_1_reg = 0xD9,
  87         .io_port_2_reg = 0xDA,
  88         .max_mp_regs = 184,
  89         .rd_bitmap_l = 0x04,
  90         .rd_bitmap_u = 0x05,
  91         .rd_bitmap_1l = 0x06,
  92         .rd_bitmap_1u = 0x07,
  93         .wr_bitmap_l = 0x08,
  94         .wr_bitmap_u = 0x09,
  95         .wr_bitmap_1l = 0x0a,
  96         .wr_bitmap_1u = 0x0b,
  97         .rd_len_p0_l = 0x0c,
  98         .rd_len_p0_u = 0x0d,
  99         .card_misc_cfg_reg = 0xcc,
 100         .card_cfg_2_1_reg = 0xcd,
 101         .cmd_rd_len_0 = 0xb4,
 102         .cmd_rd_len_1 = 0xb5,
 103         .cmd_rd_len_2 = 0xb6,
 104         .cmd_rd_len_3 = 0xb7,
 105         .cmd_cfg_0 = 0xb8,
 106         .cmd_cfg_1 = 0xb9,
 107         .cmd_cfg_2 = 0xba,
 108         .cmd_cfg_3 = 0xbb,
 109         .fw_dump_host_ready = 0xee,
 110         .fw_dump_ctrl = 0xe2,
 111         .fw_dump_start = 0xe3,
 112         .fw_dump_end = 0xea,
 113         .func1_dump_reg_start = 0x0,
 114         .func1_dump_reg_end = 0xb,
 115         .func1_scratch_reg = 0xc0,
 116         .func1_spec_reg_num = 8,
 117         .func1_spec_reg_table = {0x4C, 0x50, 0x54, 0x55, 0x58,
 118                                  0x59, 0x5c, 0x5d},
 119 };
 120
 121 static const struct mwifiex_sdio_card_reg mwifiex_reg_sd8977 = {
 122         .start_rd_port = 0,
 123         .start_wr_port = 0,
 124         .base_0_reg = 0xF8,
 125         .base_1_reg = 0xF9,
 126         .poll_reg = 0x5C,
 127         .host_int_enable = UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK |
 128                 CMD_PORT_UPLD_INT_MASK | CMD_PORT_DNLD_INT_MASK,
 129         .host_int_rsr_reg = 0x4,
 130         .host_int_status_reg = 0x0C,
 131         .host_int_mask_reg = 0x08,
 132         .status_reg_0 = 0xE8,
 133         .status_reg_1 = 0xE9,
 134         .sdio_int_mask = 0xff,
 135         .data_port_mask = 0xffffffff,
 136         .io_port_0_reg = 0xE4,
 137         .io_port_1_reg = 0xE5,
 138         .io_port_2_reg = 0xE6,
 139         .max_mp_regs = 196,
 140         .rd_bitmap_l = 0x10,
 141         .rd_bitmap_u = 0x11,
 142         .rd_bitmap_1l = 0x12,
 143         .rd_bitmap_1u = 0x13,
 144         .wr_bitmap_l = 0x14,
 145         .wr_bitmap_u = 0x15,
 146         .wr_bitmap_1l = 0x16,
 147         .wr_bitmap_1u = 0x17,
 148         .rd_len_p0_l = 0x18,
 149         .rd_len_p0_u = 0x19,
 150         .card_misc_cfg_reg = 0xd8,
 151         .card_cfg_2_1_reg = 0xd9,
 152         .cmd_rd_len_0 = 0xc0,
 153         .cmd_rd_len_1 = 0xc1,
 154         .cmd_rd_len_2 = 0xc2,
 155         .cmd_rd_len_3 = 0xc3,
 156         .cmd_cfg_0 = 0xc4,
 157         .cmd_cfg_1 = 0xc5,
 158         .cmd_cfg_2 = 0xc6,
 159         .cmd_cfg_3 = 0xc7,
 160         .fw_dump_host_ready = 0xcc,
 161         .fw_dump_ctrl = 0xf0,
 162         .fw_dump_start = 0xf1,
 163         .fw_dump_end = 0xf8,
 164         .func1_dump_reg_start = 0x10,
 165         .func1_dump_reg_end = 0x17,
 166         .func1_scratch_reg = 0xe8,
 167         .func1_spec_reg_num = 13,
 168         .func1_spec_reg_table = {0x08, 0x58, 0x5C, 0x5D,
 169                                  0x60, 0x61, 0x62, 0x64,
 170                                  0x65, 0x66, 0x68, 0x69,
 171                                  0x6a},
 172 };
 173
 174 static const struct mwifiex_sdio_card_reg mwifiex_reg_sd8997 = {
 175         .start_rd_port = 0,
 176         .start_wr_port = 0,
 177         .base_0_reg = 0xF8,
 178         .base_1_reg = 0xF9,
 179         .poll_reg = 0x5C,
 180         .host_int_enable = UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK |
 181                         CMD_PORT_UPLD_INT_MASK | CMD_PORT_DNLD_INT_MASK,
 182         .host_int_rsr_reg = 0x4,
 183         .host_int_status_reg = 0x0C,
 184         .host_int_mask_reg = 0x08,
 185         .host_strap_reg = 0xF4,
 186         .host_strap_mask = 0x01,
 187         .host_strap_value = 0x00,
 188         .status_reg_0 = 0xE8,
 189         .status_reg_1 = 0xE9,
 190         .sdio_int_mask = 0xff,
 191         .data_port_mask = 0xffffffff,
 192         .io_port_0_reg = 0xE4,
 193         .io_port_1_reg = 0xE5,
 194         .io_port_2_reg = 0xE6,
 195         .max_mp_regs = 196,
 196         .rd_bitmap_l = 0x10,
 197         .rd_bitmap_u = 0x11,
 198         .rd_bitmap_1l = 0x12,
 199         .rd_bitmap_1u = 0x13,
 200         .wr_bitmap_l = 0x14,
 201         .wr_bitmap_u = 0x15,
 202         .wr_bitmap_1l = 0x16,
 203         .wr_bitmap_1u = 0x17,
 204         .rd_len_p0_l = 0x18,
 205         .rd_len_p0_u = 0x19,
 206         .card_misc_cfg_reg = 0xd8,
 207         .card_cfg_2_1_reg = 0xd9,
 208         .cmd_rd_len_0 = 0xc0,
 209         .cmd_rd_len_1 = 0xc1,
 210         .cmd_rd_len_2 = 0xc2,
 211         .cmd_rd_len_3 = 0xc3,
 212         .cmd_cfg_0 = 0xc4,
 213         .cmd_cfg_1 = 0xc5,
 214         .cmd_cfg_2 = 0xc6,
 215         .cmd_cfg_3 = 0xc7,
 216         .fw_dump_host_ready = 0xcc,
 217         .fw_dump_ctrl = 0xf0,
 218         .fw_dump_start = 0xf1,
 219         .fw_dump_end = 0xf8,
 220         .func1_dump_reg_start = 0x10,
 221         .func1_dump_reg_end = 0x17,
 222         .func1_scratch_reg = 0xe8,
 223         .func1_spec_reg_num = 13,
 224         .func1_spec_reg_table = {0x08, 0x58, 0x5C, 0x5D,
 225                                  0x60, 0x61, 0x62, 0x64,
 226                                  0x65, 0x66, 0x68, 0x69,
 227                                  0x6a},
 228 };
 229
 230 static const struct mwifiex_sdio_card_reg mwifiex_reg_sd8887 = {
 231         .start_rd_port = 0,
 232         .start_wr_port = 0,
 233         .base_0_reg = 0x6C,
 234         .base_1_reg = 0x6D,
 235         .poll_reg = 0x5C,
 236         .host_int_enable = UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK |
 237                         CMD_PORT_UPLD_INT_MASK | CMD_PORT_DNLD_INT_MASK,
 238         .host_int_rsr_reg = 0x4,
 239         .host_int_status_reg = 0x0C,
 240         .host_int_mask_reg = 0x08,
 241         .status_reg_0 = 0x90,
 242         .status_reg_1 = 0x91,
 243         .sdio_int_mask = 0xff,
 244         .data_port_mask = 0xffffffff,
 245         .io_port_0_reg = 0xE4,
 246         .io_port_1_reg = 0xE5,
 247         .io_port_2_reg = 0xE6,
 248         .max_mp_regs = 196,
 249         .rd_bitmap_l = 0x10,
 250         .rd_bitmap_u = 0x11,
 251         .rd_bitmap_1l = 0x12,
 252         .rd_bitmap_1u = 0x13,
 253         .wr_bitmap_l = 0x14,
 254         .wr_bitmap_u = 0x15,
 255         .wr_bitmap_1l = 0x16,
 256         .wr_bitmap_1u = 0x17,
 257         .rd_len_p0_l = 0x18,
 258         .rd_len_p0_u = 0x19,
 259         .card_misc_cfg_reg = 0xd8,
 260         .card_cfg_2_1_reg = 0xd9,
 261         .cmd_rd_len_0 = 0xc0,
 262         .cmd_rd_len_1 = 0xc1,
 263         .cmd_rd_len_2 = 0xc2,
 264         .cmd_rd_len_3 = 0xc3,
 265         .cmd_cfg_0 = 0xc4,
 266         .cmd_cfg_1 = 0xc5,
 267         .cmd_cfg_2 = 0xc6,
 268         .cmd_cfg_3 = 0xc7,
 269         .func1_dump_reg_start = 0x10,
 270         .func1_dump_reg_end = 0x17,
 271         .func1_scratch_reg = 0x90,
 272         .func1_spec_reg_num = 13,
 273         .func1_spec_reg_table = {0x08, 0x58, 0x5C, 0x5D, 0x60,
 274                                  0x61, 0x62, 0x64, 0x65, 0x66,
 275                                  0x68, 0x69, 0x6a},
 276 };
 277
 278 static const struct mwifiex_sdio_card_reg mwifiex_reg_sd8987 = {
 279         .start_rd_port = 0,
 280         .start_wr_port = 0,
 281         .base_0_reg = 0xF8,
 282         .base_1_reg = 0xF9,
 283         .poll_reg = 0x5C,
 284         .host_int_enable = UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK |
 285                         CMD_PORT_UPLD_INT_MASK | CMD_PORT_DNLD_INT_MASK,
 286         .host_int_rsr_reg = 0x4,
 287         .host_int_status_reg = 0x0C,
 288         .host_int_mask_reg = 0x08,
 289         .host_strap_reg = 0xF4,
 290         .host_strap_mask = 0x01,
 291         .host_strap_value = 0x00,
 292         .status_reg_0 = 0xE8,
 293         .status_reg_1 = 0xE9,
 294         .sdio_int_mask = 0xff,
 295         .data_port_mask = 0xffffffff,
 296         .io_port_0_reg = 0xE4,
 297         .io_port_1_reg = 0xE5,
 298         .io_port_2_reg = 0xE6,
 299         .max_mp_regs = 196,
 300         .rd_bitmap_l = 0x10,
 301         .rd_bitmap_u = 0x11,
 302         .rd_bitmap_1l = 0x12,
 303         .rd_bitmap_1u = 0x13,
 304         .wr_bitmap_l = 0x14,
 305         .wr_bitmap_u = 0x15,
 306         .wr_bitmap_1l = 0x16,
 307         .wr_bitmap_1u = 0x17,
 308         .rd_len_p0_l = 0x18,
 309         .rd_len_p0_u = 0x19,
 310         .card_misc_cfg_reg = 0xd8,
 311         .card_cfg_2_1_reg = 0xd9,
 312         .cmd_rd_len_0 = 0xc0,
 313         .cmd_rd_len_1 = 0xc1,
 314         .cmd_rd_len_2 = 0xc2,
 315         .cmd_rd_len_3 = 0xc3,
 316         .cmd_cfg_0 = 0xc4,
 317         .cmd_cfg_1 = 0xc5,
 318         .cmd_cfg_2 = 0xc6,
 319         .cmd_cfg_3 = 0xc7,
 320         .fw_dump_host_ready = 0xcc,
 321         .fw_dump_ctrl = 0xf9,
 322         .fw_dump_start = 0xf1,
 323         .fw_dump_end = 0xf8,
 324         .func1_dump_reg_start = 0x10,
 325         .func1_dump_reg_end = 0x17,
 326         .func1_scratch_reg = 0xE8,
 327         .func1_spec_reg_num = 13,
 328         .func1_spec_reg_table = {0x08, 0x58, 0x5C, 0x5D, 0x60,
 329                                  0x61, 0x62, 0x64, 0x65, 0x66,
 330                                  0x68, 0x69, 0x6a},
 331 };
 332
 333 static const struct mwifiex_sdio_device mwifiex_sdio_sd8786 = {
 334         .firmware = SD8786_DEFAULT_FW_NAME,
 335         .reg = &mwifiex_reg_sd87xx,
 336         .max_ports = 16,
 337         .mp_agg_pkt_limit = 8,
 338         .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K,
 339         .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
 340         .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
 341         .supports_sdio_new_mode = false,
 342         .has_control_mask = true,
 343         .can_dump_fw = false,
 344         .can_auto_tdls = false,
 345         .can_ext_scan = false,
 346 };
 347
 348 static const struct mwifiex_sdio_device mwifiex_sdio_sd8787 = {
 349         .firmware = SD8787_DEFAULT_FW_NAME,
 350         .reg = &mwifiex_reg_sd87xx,
 351         .max_ports = 16,
 352         .mp_agg_pkt_limit = 8,
 353         .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K,
 354         .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
 355         .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
 356         .supports_sdio_new_mode = false,
 357         .has_control_mask = true,
 358         .can_dump_fw = false,
 359         .can_auto_tdls = false,
 360         .can_ext_scan = true,
 361 };
 362
 363 static const struct mwifiex_sdio_device mwifiex_sdio_sd8797 = {
 364         .firmware = SD8797_DEFAULT_FW_NAME,
 365         .reg = &mwifiex_reg_sd87xx,
 366         .max_ports = 16,
 367         .mp_agg_pkt_limit = 8,
 368         .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K,
 369         .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
 370         .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
 371         .supports_sdio_new_mode = false,
 372         .has_control_mask = true,
 373         .can_dump_fw = false,
 374         .can_auto_tdls = false,
 375         .can_ext_scan = true,
 376 };
 377
 378 static const struct mwifiex_sdio_device mwifiex_sdio_sd8897 = {
 379         .firmware = SD8897_DEFAULT_FW_NAME,
 380         .reg = &mwifiex_reg_sd8897,
 381         .max_ports = 32,
 382         .mp_agg_pkt_limit = 16,
 383         .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K,
 384         .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
 385         .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
 386         .supports_sdio_new_mode = true,
 387         .has_control_mask = false,
 388         .can_dump_fw = true,
 389         .can_auto_tdls = false,
 390         .can_ext_scan = true,
 391 };
 392
 393 static const struct mwifiex_sdio_device mwifiex_sdio_sd8977 = {
 394         .firmware = SD8977_DEFAULT_FW_NAME,
 395         .reg = &mwifiex_reg_sd8977,
 396         .max_ports = 32,
 397         .mp_agg_pkt_limit = 16,
 398         .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K,
 399         .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
 400         .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
 401         .supports_sdio_new_mode = true,
 402         .has_control_mask = false,
 403         .can_dump_fw = true,
 404         .fw_dump_enh = true,
 405         .can_auto_tdls = false,
 406         .can_ext_scan = true,
 407 };
 408
 409 static const struct mwifiex_sdio_device mwifiex_sdio_sd8997 = {
 410         .firmware = SD8997_DEFAULT_FW_NAME,
 411         .firmware_sdiouart = SD8997_SDIOUART_FW_NAME,
 412         .reg = &mwifiex_reg_sd8997,
 413         .max_ports = 32,
 414         .mp_agg_pkt_limit = 16,
 415         .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K,
 416         .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
 417         .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
 418         .supports_sdio_new_mode = true,
 419         .has_control_mask = false,
 420         .can_dump_fw = true,
 421         .fw_dump_enh = true,
 422         .can_auto_tdls = false,
 423         .can_ext_scan = true,
 424 };
 425
 426 static const struct mwifiex_sdio_device mwifiex_sdio_sd8887 = {
 427         .firmware = SD8887_DEFAULT_FW_NAME,
 428         .reg = &mwifiex_reg_sd8887,
 429         .max_ports = 32,
 430         .mp_agg_pkt_limit = 16,
 431         .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K,
 432         .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_32K,
 433         .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_32K,
 434         .supports_sdio_new_mode = true,
 435         .has_control_mask = false,
 436         .can_dump_fw = false,
 437         .can_auto_tdls = true,
 438         .can_ext_scan = true,
 439 };
 440
 441 static const struct mwifiex_sdio_device mwifiex_sdio_sd8987 = {
 442         .firmware = SD8987_DEFAULT_FW_NAME,
 443         .reg = &mwifiex_reg_sd8987,
 444         .max_ports = 32,
 445         .mp_agg_pkt_limit = 16,
 446         .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K,
 447         .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
 448         .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_MAX,
 449         .supports_sdio_new_mode = true,
 450         .has_control_mask = false,
 451         .can_dump_fw = true,
 452         .fw_dump_enh = true,
 453         .can_auto_tdls = true,
 454         .can_ext_scan = true,
 455 };
 456
 457 static const struct mwifiex_sdio_device mwifiex_sdio_sd8801 = {
 458         .firmware = SD8801_DEFAULT_FW_NAME,
 459         .reg = &mwifiex_reg_sd87xx,
 460         .max_ports = 16,
 461         .mp_agg_pkt_limit = 8,
 462         .supports_sdio_new_mode = false,
 463         .has_control_mask = true,
 464         .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K,
 465         .mp_tx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
 466         .mp_rx_agg_buf_size = MWIFIEX_MP_AGGR_BUF_SIZE_16K,
 467         .can_dump_fw = false,
 468         .can_auto_tdls = false,
 469         .can_ext_scan = true,
 470 };
 471
 472 static struct memory_type_mapping generic_mem_type_map[] = {
 473         {"DUMP", NULL, 0, 0xDD},
 474 };
 475
 476 static struct memory_type_mapping mem_type_mapping_tbl[] = {
 477         {"ITCM", NULL, 0, 0xF0},
 478         {"DTCM", NULL, 0, 0xF1},
 479         {"SQRAM", NULL, 0, 0xF2},
 480         {"APU", NULL, 0, 0xF3},
 481         {"CIU", NULL, 0, 0xF4},
 482         {"ICU", NULL, 0, 0xF5},
 483         {"MAC", NULL, 0, 0xF6},
 484         {"EXT7", NULL, 0, 0xF7},
 485         {"EXT8", NULL, 0, 0xF8},
 486         {"EXT9", NULL, 0, 0xF9},
 487         {"EXT10", NULL, 0, 0xFA},
 488         {"EXT11", NULL, 0, 0xFB},
 489         {"EXT12", NULL, 0, 0xFC},
 490         {"EXT13", NULL, 0, 0xFD},
 491         {"EXTLAST", NULL, 0, 0xFE},
 492 };
 493
 494 static const struct of_device_id mwifiex_sdio_of_match_table[] = {
 495         { .compatible = "marvell,sd8897" },
 496         { .compatible = "marvell,sd8997" },
 497         { }
 498 };
 499
 500 /* This function parse device tree node using mmc subnode devicetree API.
 501  * The device node is saved in card->plt_of_node.
 502  * if the device tree node exist and include interrupts attributes, this
 503  * function will also request platform specific wakeup interrupt.
 504  */
 505 static int mwifiex_sdio_probe_of(struct device *dev)
 506 {
 507         if (!of_match_node(mwifiex_sdio_of_match_table, dev->of_node)) {
 508                 dev_err(dev, "required compatible string missing\n");
 509                 return -EINVAL;
 510         }
 511
 512         return 0;
 513 }
 514
 515 /*
 516  * SDIO probe.
 517  *
 518  * This function probes an mwifiex device and registers it. It allocates
 519  * the card structure, enables SDIO function number and initiates the
 520  * device registration and initialization procedure by adding a logical
 521  * interface.
 522  */
 523 static int
 524 mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id)
 525 {
 526         int ret;
 527         struct sdio_mmc_card *card = NULL;
 528
 529         pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n",
 530                  func->vendor, func->device, func->class, func->num);
 531
 532         card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
 533         if (!card)
 534                 return -ENOMEM;
 535
 536         init_completion(&card->fw_done);
 537
 538         card->func = func;
 539
 540         func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE;
 541
 542         if (id->driver_data) {
 543                 struct mwifiex_sdio_device *data = (void *)id->driver_data;
 544
 545                 card->firmware = data->firmware;
 546                 card->firmware_sdiouart = data->firmware_sdiouart;
 547                 card->reg = data->reg;
 548                 card->max_ports = data->max_ports;
 549                 card->mp_agg_pkt_limit = data->mp_agg_pkt_limit;
 550                 card->supports_sdio_new_mode = data->supports_sdio_new_mode;
 551                 card->has_control_mask = data->has_control_mask;
 552                 card->tx_buf_size = data->tx_buf_size;
 553                 card->mp_tx_agg_buf_size = data->mp_tx_agg_buf_size;
 554                 card->mp_rx_agg_buf_size = data->mp_rx_agg_buf_size;
 555                 card->can_dump_fw = data->can_dump_fw;
 556                 card->fw_dump_enh = data->fw_dump_enh;
 557                 card->can_auto_tdls = data->can_auto_tdls;
 558                 card->can_ext_scan = data->can_ext_scan;
 559                 INIT_WORK(&card->work, mwifiex_sdio_work);
 560         }
 561
 562         sdio_claim_host(func);
 563         ret = sdio_enable_func(func);
 564         sdio_release_host(func);
 565
 566         if (ret) {
 567                 dev_err(&func->dev, "failed to enable function\n");
 568                 return ret;
 569         }
 570
 571         /* device tree node parsing and platform specific configuration*/
 572         if (func->dev.of_node) {
 573                 ret = mwifiex_sdio_probe_of(&func->dev);
 574                 if (ret)
 575                         goto err_disable;
 576         }
 577
 578         ret = mwifiex_add_card(card, &card->fw_done, &sdio_ops,
 579                                MWIFIEX_SDIO, &func->dev);
 580         if (ret) {
 581                 dev_err(&func->dev, "add card failed\n");
 582                 goto err_disable;
 583         }
 584
 585         return 0;
 586
 587 err_disable:
 588         sdio_claim_host(func);
 589         sdio_disable_func(func);
 590         sdio_release_host(func);
 591
 592         return ret;
 593 }
 594
 595 /*
 596  * SDIO resume.
 597  *
 598  * Kernel needs to suspend all functions separately. Therefore all
 599  * registered functions must have drivers with suspend and resume
 600  * methods. Failing that the kernel simply removes the whole card.
 601  *
 602  * If already not resumed, this function turns on the traffic and
 603  * sends a host sleep cancel request to the firmware.
 604  */
 605 static int mwifiex_sdio_resume(struct device *dev)
 606 {
 607         struct sdio_func *func = dev_to_sdio_func(dev);
 608         struct sdio_mmc_card *card;
 609         struct mwifiex_adapter *adapter;
 610
 611         card = sdio_get_drvdata(func);
 612         if (!card || !card->adapter) {
 613                 dev_err(dev, "resume: invalid card or adapter\n");
 614                 return 0;
 615         }
 616
 617         adapter = card->adapter;
 618
 619         if (!test_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags)) {
 620                 mwifiex_dbg(adapter, WARN,
 621                             "device already resumed\n");
 622                 return 0;
 623         }
 624
 625         clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
 626
 627         /* Disable Host Sleep */
 628         mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
 629                           MWIFIEX_SYNC_CMD);
 630
 631         mwifiex_disable_wake(adapter);
 632
 633         return 0;
 634 }
 635
 636 /* Write data into SDIO card register. Caller claims SDIO device. */
 637 static int
 638 mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data)
 639 {
 640         int ret = -1;
 641
 642         sdio_writeb(func, data, reg, &ret);
 643         return ret;
 644 }
 645
 646 /* This function writes data into SDIO card register.
 647  */
 648 static int
 649 mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data)
 650 {
 651         struct sdio_mmc_card *card = adapter->card;
 652         int ret;
 653
 654         sdio_claim_host(card->func);
 655         ret = mwifiex_write_reg_locked(card->func, reg, data);
 656         sdio_release_host(card->func);
 657
 658         return ret;
 659 }
 660
 661 /* This function reads data from SDIO card register.
 662  */
 663 static int
 664 mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data)
 665 {
 666         struct sdio_mmc_card *card = adapter->card;
 667         int ret = -1;
 668         u8 val;
 669
 670         sdio_claim_host(card->func);
 671         val = sdio_readb(card->func, reg, &ret);
 672         sdio_release_host(card->func);
 673
 674         *data = val;
 675
 676         return ret;
 677 }
 678
 679 /* This function writes multiple data into SDIO card memory.
 680  *
 681  * This does not work in suspended mode.
 682  */
 683 static int
 684 mwifiex_write_data_sync(struct mwifiex_adapter *adapter,
 685                         u8 *buffer, u32 pkt_len, u32 port)
 686 {
 687         struct sdio_mmc_card *card = adapter->card;
 688         int ret;
 689         u8 blk_mode =
 690                 (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE;
 691         u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
 692         u32 blk_cnt =
 693                 (blk_mode ==
 694                  BLOCK_MODE) ? (pkt_len /
 695                                 MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len;
 696         u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
 697
 698         if (test_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags)) {
 699                 mwifiex_dbg(adapter, ERROR,
 700                             "%s: not allowed while suspended\n", __func__);
 701                 return -1;
 702         }
 703
 704         sdio_claim_host(card->func);
 705
 706         ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size);
 707
 708         sdio_release_host(card->func);
 709
 710         return ret;
 711 }
 712
 713 /* This function reads multiple data from SDIO card memory.
 714  */
 715 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer,
 716                                   u32 len, u32 port, u8 claim)
 717 {
 718         struct sdio_mmc_card *card = adapter->card;
 719         int ret;
 720         u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE
 721                        : BLOCK_MODE;
 722         u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1;
 723         u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE)
 724                         : len;
 725         u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK);
 726
 727         if (claim)
 728                 sdio_claim_host(card->func);
 729
 730         ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size);
 731
 732         if (claim)
 733                 sdio_release_host(card->func);
 734
 735         return ret;
 736 }
 737
 738 /* This function reads the firmware status.
 739  */
 740 static int
 741 mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat)
 742 {
 743         struct sdio_mmc_card *card = adapter->card;
 744         const struct mwifiex_sdio_card_reg *reg = card->reg;
 745         u8 fws0, fws1;
 746
 747         if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0))
 748                 return -1;
 749
 750         if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1))
 751                 return -1;
 752
 753         *dat = (u16)((fws1 << 8) | fws0);
 754         return 0;
 755 }
 756
 757 /* This function checks the firmware status in card.
 758  */
 759 static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter,
 760                                    u32 poll_num)
 761 {
 762         int ret = 0;
 763         u16 firmware_stat;
 764         u32 tries;
 765
 766         for (tries = 0; tries < poll_num; tries++) {
 767                 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
 768                 if (ret)
 769                         continue;
 770                 if (firmware_stat == FIRMWARE_READY_SDIO) {
 771                         ret = 0;
 772                         break;
 773                 }
 774
 775                 msleep(100);
 776                 ret = -1;
 777         }
 778
 779         return ret;
 780 }
 781
 782 /* This function checks if WLAN is the winner.
 783  */
 784 static int mwifiex_check_winner_status(struct mwifiex_adapter *adapter)
 785 {
 786         int ret = 0;
 787         u8 winner = 0;
 788         struct sdio_mmc_card *card = adapter->card;
 789
 790         if (mwifiex_read_reg(adapter, card->reg->status_reg_0, &winner))
 791                 return -1;
 792
 793         if (winner)
 794                 adapter->winner = 0;
 795         else
 796                 adapter->winner = 1;
 797
 798         return ret;
 799 }
 800
 801 /*
 802  * SDIO remove.
 803  *
 804  * This function removes the interface and frees up the card structure.
 805  */
 806 static void
 807 mwifiex_sdio_remove(struct sdio_func *func)
 808 {
 809         struct sdio_mmc_card *card;
 810         struct mwifiex_adapter *adapter;
 811         struct mwifiex_private *priv;
 812         int ret = 0;
 813         u16 firmware_stat;
 814
 815         card = sdio_get_drvdata(func);
 816         if (!card)
 817                 return;
 818
 819         wait_for_completion(&card->fw_done);
 820
 821         adapter = card->adapter;
 822         if (!adapter || !adapter->priv_num)
 823                 return;
 824
 825         mwifiex_dbg(adapter, INFO, "info: SDIO func num=%d\n", func->num);
 826
 827         ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat);
 828         if (!ret && firmware_stat == FIRMWARE_READY_SDIO &&
 829             !adapter->mfg_mode) {
 830                 mwifiex_deauthenticate_all(adapter);
 831
 832                 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 833                 mwifiex_disable_auto_ds(priv);
 834                 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
 835         }
 836
 837         mwifiex_remove_card(adapter);
 838 }
 839
 840 /*
 841  * SDIO suspend.
 842  *
 843  * Kernel needs to suspend all functions separately. Therefore all
 844  * registered functions must have drivers with suspend and resume
 845  * methods. Failing that the kernel simply removes the whole card.
 846  *
 847  * If already not suspended, this function allocates and sends a host
 848  * sleep activate request to the firmware and turns off the traffic.
 849  */
 850 static int mwifiex_sdio_suspend(struct device *dev)
 851 {
 852         struct sdio_func *func = dev_to_sdio_func(dev);
 853         struct sdio_mmc_card *card;
 854         struct mwifiex_adapter *adapter;
 855         mmc_pm_flag_t pm_flag = 0;
 856         int ret = 0;
 857
 858         pm_flag = sdio_get_host_pm_caps(func);
 859         pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
 860                  sdio_func_id(func), pm_flag);
 861         if (!(pm_flag & MMC_PM_KEEP_POWER)) {
 862                 dev_err(dev, "%s: cannot remain alive while host is"
 863                         " suspended\n", sdio_func_id(func));
 864                 return -ENOSYS;
 865         }
 866
 867         card = sdio_get_drvdata(func);
 868         if (!card) {
 869                 dev_err(dev, "suspend: invalid card\n");
 870                 return 0;
 871         }
 872
 873         /* Might still be loading firmware */
 874         wait_for_completion(&card->fw_done);
 875
 876         adapter = card->adapter;
 877         if (!adapter) {
 878                 dev_err(dev, "adapter is not valid\n");
 879                 return 0;
 880         }
 881
 882         if (!adapter->is_up)
 883                 return -EBUSY;
 884
 885         mwifiex_enable_wake(adapter);
 886
 887         /* Enable the Host Sleep */
 888         if (!mwifiex_enable_hs(adapter)) {
 889                 mwifiex_dbg(adapter, ERROR,
 890                             "cmd: failed to suspend\n");
 891                 clear_bit(MWIFIEX_IS_HS_ENABLING, &adapter->work_flags);
 892                 mwifiex_disable_wake(adapter);
 893                 return -EFAULT;
 894         }
 895
 896         mwifiex_dbg(adapter, INFO,
 897                     "cmd: suspend with MMC_PM_KEEP_POWER\n");
 898         ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
 899
 900         /* Indicate device suspended */
 901         set_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
 902         clear_bit(MWIFIEX_IS_HS_ENABLING, &adapter->work_flags);
 903
 904         return ret;
 905 }
 906
 907 static void mwifiex_sdio_coredump(struct device *dev)
 908 {
 909         struct sdio_func *func = dev_to_sdio_func(dev);
 910         struct sdio_mmc_card *card;
 911
 912         card = sdio_get_drvdata(func);
 913         if (!test_and_set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP,
 914                               &card->work_flags))
 915                 schedule_work(&card->work);
 916 }
 917
 918 /* WLAN IDs */
 919 static const struct sdio_device_id mwifiex_ids[] = {
 920         {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786_WLAN),
 921                 .driver_data = (unsigned long) &mwifiex_sdio_sd8786},
 922         {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787_WLAN),
 923                 .driver_data = (unsigned long) &mwifiex_sdio_sd8787},
 924         {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797_WLAN),
 925                 .driver_data = (unsigned long) &mwifiex_sdio_sd8797},
 926         {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897_WLAN),
 927                 .driver_data = (unsigned long) &mwifiex_sdio_sd8897},
 928         {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887_WLAN),
 929                 .driver_data = (unsigned long)&mwifiex_sdio_sd8887},
 930         {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8801_WLAN),
 931                 .driver_data = (unsigned long)&mwifiex_sdio_sd8801},
 932         {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8977_WLAN),
 933                 .driver_data = (unsigned long)&mwifiex_sdio_sd8977},
 934         {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8987_WLAN),
 935                 .driver_data = (unsigned long)&mwifiex_sdio_sd8987},
 936         {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8997_WLAN),
 937                 .driver_data = (unsigned long)&mwifiex_sdio_sd8997},
 938         {},
 939 };
 940
 941 MODULE_DEVICE_TABLE(sdio, mwifiex_ids);
 942
 943 static const struct dev_pm_ops mwifiex_sdio_pm_ops = {
 944         .suspend = mwifiex_sdio_suspend,
 945         .resume = mwifiex_sdio_resume,
 946 };
 947
 948 static struct sdio_driver mwifiex_sdio = {
 949         .name = "mwifiex_sdio",
 950         .id_table = mwifiex_ids,
 951         .probe = mwifiex_sdio_probe,
 952         .remove = mwifiex_sdio_remove,
 953         .drv = {
 954                 .owner = THIS_MODULE,
 955                 .coredump = mwifiex_sdio_coredump,
 956                 .pm = &mwifiex_sdio_pm_ops,
 957         }
 958 };
 959
 960 /*
 961  * This function wakes up the card.
 962  *
 963  * A host power up command is written to the card configuration
 964  * register to wake up the card.
 965  */
 966 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
 967 {
 968         mwifiex_dbg(adapter, EVENT,
 969                     "event: wakeup device...\n");
 970
 971         return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP);
 972 }
 973
 974 /*
 975  * This function is called after the card has woken up.
 976  *
 977  * The card configuration register is reset.
 978  */
 979 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
 980 {
 981         mwifiex_dbg(adapter, EVENT,
 982                     "cmd: wakeup device completed\n");
 983
 984         return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0);
 985 }
 986
 987 static int mwifiex_sdio_dnld_fw(struct mwifiex_adapter *adapter,
 988                         struct mwifiex_fw_image *fw)
 989 {
 990         struct sdio_mmc_card *card = adapter->card;
 991         int ret;
 992
 993         sdio_claim_host(card->func);
 994         ret = mwifiex_dnld_fw(adapter, fw);
 995         sdio_release_host(card->func);
 996
 997         return ret;
 998 }
 999
1000 /*
1001  * This function is used to initialize IO ports for the
1002  * chipsets supporting SDIO new mode eg SD8897.
1003  */
1004 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter)
1005 {
1006         u8 reg;
1007         struct sdio_mmc_card *card = adapter->card;
1008
1009         adapter->ioport = MEM_PORT;
1010
1011         /* enable sdio new mode */
1012         if (mwifiex_read_reg(adapter, card->reg->card_cfg_2_1_reg, &reg))
1013                 return -1;
1014         if (mwifiex_write_reg(adapter, card->reg->card_cfg_2_1_reg,
1015                               reg | CMD53_NEW_MODE))
1016                 return -1;
1017
1018         /* Configure cmd port and enable reading rx length from the register */
1019         if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_0, &reg))
1020                 return -1;
1021         if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_0,
1022                               reg | CMD_PORT_RD_LEN_EN))
1023                 return -1;
1024
1025         /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is
1026          * completed
1027          */
1028         if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_1, &reg))
1029                 return -1;
1030         if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_1,
1031                               reg | CMD_PORT_AUTO_EN))
1032                 return -1;
1033
1034         return 0;
1035 }
1036
1037 /* This function initializes the IO ports.
1038  *
1039  * The following operations are performed -
1040  *      - Read the IO ports (0, 1 and 2)
1041  *      - Set host interrupt Reset-To-Read to clear
1042  *      - Set auto re-enable interrupt
1043  */
1044 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter)
1045 {
1046         u8 reg;
1047         struct sdio_mmc_card *card = adapter->card;
1048
1049         adapter->ioport = 0;
1050
1051         if (card->supports_sdio_new_mode) {
1052                 if (mwifiex_init_sdio_new_mode(adapter))
1053                         return -1;
1054                 goto cont;
1055         }
1056
1057         /* Read the IO port */
1058         if (!mwifiex_read_reg(adapter, card->reg->io_port_0_reg, &reg))
1059                 adapter->ioport |= (reg & 0xff);
1060         else
1061                 return -1;
1062
1063         if (!mwifiex_read_reg(adapter, card->reg->io_port_1_reg, &reg))
1064                 adapter->ioport |= ((reg & 0xff) << 8);
1065         else
1066                 return -1;
1067
1068         if (!mwifiex_read_reg(adapter, card->reg->io_port_2_reg, &reg))
1069                 adapter->ioport |= ((reg & 0xff) << 16);
1070         else
1071                 return -1;
1072 cont:
1073         mwifiex_dbg(adapter, INFO,
1074                     "info: SDIO FUNC1 IO port: %#x\n", adapter->ioport);
1075
1076         /* Set Host interrupt reset to read to clear */
1077         if (!mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, &reg))
1078                 mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg,
1079                                   reg | card->reg->sdio_int_mask);
1080         else
1081                 return -1;
1082
1083         /* Dnld/Upld ready set to auto reset */
1084         if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, &reg))
1085                 mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg,
1086                                   reg | AUTO_RE_ENABLE_INT);
1087         else
1088                 return -1;
1089
1090         return 0;
1091 }
1092
1093 /*
1094  * This function sends data to the card.
1095  */
1096 static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter,
1097                                       u8 *payload, u32 pkt_len, u32 port)
1098 {
1099         u32 i = 0;
1100         int ret;
1101
1102         do {
1103                 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port);
1104                 if (ret) {
1105                         i++;
1106                         mwifiex_dbg(adapter, ERROR,
1107                                     "host_to_card, write iomem\t"
1108                                     "(%d) failed: %d\n", i, ret);
1109                         if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
1110                                 mwifiex_dbg(adapter, ERROR,
1111                                             "write CFG reg failed\n");
1112
1113                         ret = -1;
1114                         if (i > MAX_WRITE_IOMEM_RETRY)
1115                                 return ret;
1116                 }
1117         } while (ret == -1);
1118
1119         return ret;
1120 }
1121
1122 /*
1123  * This function gets the read port.
1124  *
1125  * If control port bit is set in MP read bitmap, the control port
1126  * is returned, otherwise the current read port is returned and
1127  * the value is increased (provided it does not reach the maximum
1128  * limit, in which case it is reset to 1)
1129  */
1130 static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port)
1131 {
1132         struct sdio_mmc_card *card = adapter->card;
1133         const struct mwifiex_sdio_card_reg *reg = card->reg;
1134         u32 rd_bitmap = card->mp_rd_bitmap;
1135
1136         mwifiex_dbg(adapter, DATA,
1137                     "data: mp_rd_bitmap=0x%08x\n", rd_bitmap);
1138
1139         if (card->supports_sdio_new_mode) {
1140                 if (!(rd_bitmap & reg->data_port_mask))
1141                         return -1;
1142         } else {
1143                 if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask)))
1144                         return -1;
1145         }
1146
1147         if ((card->has_control_mask) &&
1148             (card->mp_rd_bitmap & CTRL_PORT_MASK)) {
1149                 card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK);
1150                 *port = CTRL_PORT;
1151                 mwifiex_dbg(adapter, DATA,
1152                             "data: port=%d mp_rd_bitmap=0x%08x\n",
1153                             *port, card->mp_rd_bitmap);
1154                 return 0;
1155         }
1156
1157         if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port)))
1158                 return -1;
1159
1160         /* We are now handling the SDIO data ports */
1161         card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port));
1162         *port = card->curr_rd_port;
1163
1164         if (++card->curr_rd_port == card->max_ports)
1165                 card->curr_rd_port = reg->start_rd_port;
1166
1167         mwifiex_dbg(adapter, DATA,
1168                     "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n",
1169                     *port, rd_bitmap, card->mp_rd_bitmap);
1170
1171         return 0;
1172 }
1173
1174 /*
1175  * This function gets the write port for data.
1176  *
1177  * The current write port is returned if available and the value is
1178  * increased (provided it does not reach the maximum limit, in which
1179  * case it is reset to 1)
1180  */
1181 static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port)
1182 {
1183         struct sdio_mmc_card *card = adapter->card;
1184         const struct mwifiex_sdio_card_reg *reg = card->reg;
1185         u32 wr_bitmap = card->mp_wr_bitmap;
1186
1187         mwifiex_dbg(adapter, DATA,
1188                     "data: mp_wr_bitmap=0x%08x\n", wr_bitmap);
1189
1190         if (!(wr_bitmap & card->mp_data_port_mask)) {
1191                 adapter->data_sent = true;
1192                 return -EBUSY;
1193         }
1194
1195         if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) {
1196                 card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port));
1197                 *port = card->curr_wr_port;
1198                 if (++card->curr_wr_port == card->mp_end_port)
1199                         card->curr_wr_port = reg->start_wr_port;
1200         } else {
1201                 adapter->data_sent = true;
1202                 return -EBUSY;
1203         }
1204
1205         if ((card->has_control_mask) && (*port == CTRL_PORT)) {
1206                 mwifiex_dbg(adapter, ERROR,
1207                             "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
1208                             *port, card->curr_wr_port, wr_bitmap,
1209                             card->mp_wr_bitmap);
1210                 return -1;
1211         }
1212
1213         mwifiex_dbg(adapter, DATA,
1214                     "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n",
1215                     *port, wr_bitmap, card->mp_wr_bitmap);
1216
1217         return 0;
1218 }
1219
1220 /*
1221  * This function polls the card status.
1222  */
1223 static int
1224 mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits)
1225 {
1226         struct sdio_mmc_card *card = adapter->card;
1227         u32 tries;
1228         u8 cs;
1229
1230         for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
1231                 if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs))
1232                         break;
1233                 else if ((cs & bits) == bits)
1234                         return 0;
1235
1236                 usleep_range(10, 20);
1237         }
1238
1239         mwifiex_dbg(adapter, ERROR,
1240                     "poll card status failed, tries = %d\n", tries);
1241
1242         return -1;
1243 }
1244
1245 /*
1246  * This function disables the host interrupt.
1247  *
1248  * The host interrupt mask is read, the disable bit is reset and
1249  * written back to the card host interrupt mask register.
1250  */
1251 static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter)
1252 {
1253         struct sdio_mmc_card *card = adapter->card;
1254         struct sdio_func *func = card->func;
1255
1256         sdio_claim_host(func);
1257         mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 0);
1258         sdio_release_irq(func);
1259         sdio_release_host(func);
1260 }
1261
1262 /*
1263  * This function reads the interrupt status from card.
1264  */
1265 static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter)
1266 {
1267         struct sdio_mmc_card *card = adapter->card;
1268         u8 sdio_ireg;
1269         unsigned long flags;
1270
1271         if (mwifiex_read_data_sync(adapter, card->mp_regs,
1272                                    card->reg->max_mp_regs,
1273                                    REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) {
1274                 mwifiex_dbg(adapter, ERROR, "read mp_regs failed\n");
1275                 return;
1276         }
1277
1278         sdio_ireg = card->mp_regs[card->reg->host_int_status_reg];
1279         if (sdio_ireg) {
1280                 /*
1281                  * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
1282                  * For SDIO new mode CMD port interrupts
1283                  *      DN_LD_CMD_PORT_HOST_INT_STATUS and/or
1284                  *      UP_LD_CMD_PORT_HOST_INT_STATUS
1285                  * Clear the interrupt status register
1286                  */
1287                 mwifiex_dbg(adapter, INTR,
1288                             "int: sdio_ireg = %#x\n", sdio_ireg);
1289                 spin_lock_irqsave(&adapter->int_lock, flags);
1290                 adapter->int_status |= sdio_ireg;
1291                 spin_unlock_irqrestore(&adapter->int_lock, flags);
1292         }
1293 }
1294
1295 /*
1296  * SDIO interrupt handler.
1297  *
1298  * This function reads the interrupt status from firmware and handles
1299  * the interrupt in current thread (ksdioirqd) right away.
1300  */
1301 static void
1302 mwifiex_sdio_interrupt(struct sdio_func *func)
1303 {
1304         struct mwifiex_adapter *adapter;
1305         struct sdio_mmc_card *card;
1306
1307         card = sdio_get_drvdata(func);
1308         if (!card || !card->adapter) {
1309                 pr_err("int: func=%p card=%p adapter=%p\n",
1310                        func, card, card ? card->adapter : NULL);
1311                 return;
1312         }
1313         adapter = card->adapter;
1314
1315         if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP)
1316                 adapter->ps_state = PS_STATE_AWAKE;
1317
1318         mwifiex_interrupt_status(adapter);
1319         mwifiex_main_process(adapter);
1320 }
1321
1322 /*
1323  * This function enables the host interrupt.
1324  *
1325  * The host interrupt enable mask is written to the card
1326  * host interrupt mask register.
1327  */
1328 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter)
1329 {
1330         struct sdio_mmc_card *card = adapter->card;
1331         struct sdio_func *func = card->func;
1332         int ret;
1333
1334         sdio_claim_host(func);
1335
1336         /* Request the SDIO IRQ */
1337         ret = sdio_claim_irq(func, mwifiex_sdio_interrupt);
1338         if (ret) {
1339                 mwifiex_dbg(adapter, ERROR,
1340                             "claim irq failed: ret=%d\n", ret);
1341                 goto out;
1342         }
1343
1344         /* Simply write the mask to the register */
1345         ret = mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg,
1346                                        card->reg->host_int_enable);
1347         if (ret) {
1348                 mwifiex_dbg(adapter, ERROR,
1349                             "enable host interrupt failed\n");
1350                 sdio_release_irq(func);
1351         }
1352
1353 out:
1354         sdio_release_host(func);
1355         return ret;
1356 }
1357
1358 /*
1359  * This function sends a data buffer to the card.
1360  */
1361 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter,
1362                                      u32 *type, u8 *buffer,
1363                                      u32 npayload, u32 ioport)
1364 {
1365         int ret;
1366         u32 nb;
1367
1368         if (!buffer) {
1369                 mwifiex_dbg(adapter, ERROR,
1370                             "%s: buffer is NULL\n", __func__);
1371                 return -1;
1372         }
1373
1374         ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1);
1375
1376         if (ret) {
1377                 mwifiex_dbg(adapter, ERROR,
1378                             "%s: read iomem failed: %d\n", __func__,
1379                         ret);
1380                 return -1;
1381         }
1382
1383         nb = get_unaligned_le16((buffer));
1384         if (nb > npayload) {
1385                 mwifiex_dbg(adapter, ERROR,
1386                             "%s: invalid packet, nb=%d npayload=%d\n",
1387                             __func__, nb, npayload);
1388                 return -1;
1389         }
1390
1391         *type = get_unaligned_le16((buffer + 2));
1392
1393         return ret;
1394 }
1395
1396 /*
1397  * This function downloads the firmware to the card.
1398  *
1399  * Firmware is downloaded to the card in blocks. Every block download
1400  * is tested for CRC errors, and retried a number of times before
1401  * returning failure.
1402  */
1403 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
1404                                     struct mwifiex_fw_image *fw)
1405 {
1406         struct sdio_mmc_card *card = adapter->card;
1407         const struct mwifiex_sdio_card_reg *reg = card->reg;
1408         int ret;
1409         u8 *firmware = fw->fw_buf;
1410         u32 firmware_len = fw->fw_len;
1411         u32 offset = 0;
1412         u8 base0, base1;
1413         u8 *fwbuf;
1414         u16 len = 0;
1415         u32 txlen, tx_blocks = 0, tries;
1416         u32 i = 0;
1417
1418         if (!firmware_len) {
1419                 mwifiex_dbg(adapter, ERROR,
1420                             "firmware image not found! Terminating download\n");
1421                 return -1;
1422         }
1423
1424         mwifiex_dbg(adapter, INFO,
1425                     "info: downloading FW image (%d bytes)\n",
1426                     firmware_len);
1427
1428         /* Assume that the allocated buffer is 8-byte aligned */
1429         fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL);
1430         if (!fwbuf)
1431                 return -ENOMEM;
1432
1433         sdio_claim_host(card->func);
1434
1435         /* Perform firmware data transfer */
1436         do {
1437                 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
1438                    bits */
1439                 ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY |
1440                                                     DN_LD_CARD_RDY);
1441                 if (ret) {
1442                         mwifiex_dbg(adapter, ERROR,
1443                                     "FW download with helper:\t"
1444                                     "poll status timeout @ %d\n", offset);
1445                         goto done;
1446                 }
1447
1448                 /* More data? */
1449                 if (offset >= firmware_len)
1450                         break;
1451
1452                 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
1453                         ret = mwifiex_read_reg(adapter, reg->base_0_reg,
1454                                                &base0);
1455                         if (ret) {
1456                                 mwifiex_dbg(adapter, ERROR,
1457                                             "dev BASE0 register read failed:\t"
1458                                             "base0=%#04X(%d). Terminating dnld\n",
1459                                             base0, base0);
1460                                 goto done;
1461                         }
1462                         ret = mwifiex_read_reg(adapter, reg->base_1_reg,
1463                                                &base1);
1464                         if (ret) {
1465                                 mwifiex_dbg(adapter, ERROR,
1466                                             "dev BASE1 register read failed:\t"
1467                                             "base1=%#04X(%d). Terminating dnld\n",
1468                                             base1, base1);
1469                                 goto done;
1470                         }
1471                         len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff));
1472
1473                         if (len)
1474                                 break;
1475
1476                         usleep_range(10, 20);
1477                 }
1478
1479                 if (!len) {
1480                         break;
1481                 } else if (len > MWIFIEX_UPLD_SIZE) {
1482                         mwifiex_dbg(adapter, ERROR,
1483                                     "FW dnld failed @ %d, invalid length %d\n",
1484                                     offset, len);
1485                         ret = -1;
1486                         goto done;
1487                 }
1488
1489                 txlen = len;
1490
1491                 if (len & BIT(0)) {
1492                         i++;
1493                         if (i > MAX_WRITE_IOMEM_RETRY) {
1494                                 mwifiex_dbg(adapter, ERROR,
1495                                             "FW dnld failed @ %d, over max retry\n",
1496                                             offset);
1497                                 ret = -1;
1498                                 goto done;
1499                         }
1500                         mwifiex_dbg(adapter, ERROR,
1501                                     "CRC indicated by the helper:\t"
1502                                     "len = 0x%04X, txlen = %d\n", len, txlen);
1503                         len &= ~BIT(0);
1504                         /* Setting this to 0 to resend from same offset */
1505                         txlen = 0;
1506                 } else {
1507                         i = 0;
1508
1509                         /* Set blocksize to transfer - checking for last
1510                            block */
1511                         if (firmware_len - offset < txlen)
1512                                 txlen = firmware_len - offset;
1513
1514                         tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1)
1515                                     / MWIFIEX_SDIO_BLOCK_SIZE;
1516
1517                         /* Copy payload to buffer */
1518                         memmove(fwbuf, &firmware[offset], txlen);
1519                 }
1520
1521                 ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks *
1522                                               MWIFIEX_SDIO_BLOCK_SIZE,
1523                                               adapter->ioport);
1524                 if (ret) {
1525                         mwifiex_dbg(adapter, ERROR,
1526                                     "FW download, write iomem (%d) failed @ %d\n",
1527                                     i, offset);
1528                         if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04))
1529                                 mwifiex_dbg(adapter, ERROR,
1530                                             "write CFG reg failed\n");
1531
1532                         ret = -1;
1533                         goto done;
1534                 }
1535
1536                 offset += txlen;
1537         } while (true);
1538
1539         mwifiex_dbg(adapter, MSG,
1540                     "info: FW download over, size %d bytes\n", offset);
1541
1542         ret = 0;
1543 done:
1544         sdio_release_host(card->func);
1545         kfree(fwbuf);
1546         return ret;
1547 }
1548
1549 /*
1550  * This function decode sdio aggreation pkt.
1551  *
1552  * Based on the the data block size and pkt_len,
1553  * skb data will be decoded to few packets.
1554  */
1555 static void mwifiex_deaggr_sdio_pkt(struct mwifiex_adapter *adapter,
1556                                     struct sk_buff *skb)
1557 {
1558         u32 total_pkt_len, pkt_len;
1559         struct sk_buff *skb_deaggr;
1560         u16 blk_size;
1561         u8 blk_num;
1562         u8 *data;
1563
1564         data = skb->data;
1565         total_pkt_len = skb->len;
1566
1567         while (total_pkt_len >= (SDIO_HEADER_OFFSET + adapter->intf_hdr_len)) {
1568                 if (total_pkt_len < adapter->sdio_rx_block_size)
1569                         break;
1570                 blk_num = *(data + BLOCK_NUMBER_OFFSET);
1571                 blk_size = adapter->sdio_rx_block_size * blk_num;
1572                 if (blk_size > total_pkt_len) {
1573                         mwifiex_dbg(adapter, ERROR,
1574                                     "%s: error in blk_size,\t"
1575                                     "blk_num=%d, blk_size=%d, total_pkt_len=%d\n",
1576                                     __func__, blk_num, blk_size, total_pkt_len);
1577                         break;
1578                 }
1579                 pkt_len = get_unaligned_le16((data +
1580                                              SDIO_HEADER_OFFSET));
1581                 if ((pkt_len + SDIO_HEADER_OFFSET) > blk_size) {
1582                         mwifiex_dbg(adapter, ERROR,
1583                                     "%s: error in pkt_len,\t"
1584                                     "pkt_len=%d, blk_size=%d\n",
1585                                     __func__, pkt_len, blk_size);
1586                         break;
1587                 }
1588
1589                 skb_deaggr = mwifiex_alloc_dma_align_buf(pkt_len, GFP_KERNEL);
1590                 if (!skb_deaggr)
1591                         break;
1592                 skb_put(skb_deaggr, pkt_len);
1593                 memcpy(skb_deaggr->data, data + SDIO_HEADER_OFFSET, pkt_len);
1594                 skb_pull(skb_deaggr, adapter->intf_hdr_len);
1595
1596                 mwifiex_handle_rx_packet(adapter, skb_deaggr);
1597                 data += blk_size;
1598                 total_pkt_len -= blk_size;
1599         }
1600 }
1601
1602 /*
1603  * This function decodes a received packet.
1604  *
1605  * Based on the type, the packet is treated as either a data, or
1606  * a command response, or an event, and the correct handler
1607  * function is invoked.
1608  */
1609 static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter,
1610                                     struct sk_buff *skb, u32 upld_typ)
1611 {
1612         u8 *cmd_buf;
1613         u16 pkt_len;
1614         struct mwifiex_rxinfo *rx_info;
1615
1616         pkt_len = get_unaligned_le16(skb->data);
1617
1618         if (upld_typ != MWIFIEX_TYPE_AGGR_DATA) {
1619                 skb_trim(skb, pkt_len);
1620                 skb_pull(skb, adapter->intf_hdr_len);
1621         }
1622
1623         switch (upld_typ) {
1624         case MWIFIEX_TYPE_AGGR_DATA:
1625                 mwifiex_dbg(adapter, INFO,
1626                             "info: --- Rx: Aggr Data packet ---\n");
1627                 rx_info = MWIFIEX_SKB_RXCB(skb);
1628                 rx_info->buf_type = MWIFIEX_TYPE_AGGR_DATA;
1629                 if (adapter->rx_work_enabled) {
1630                         skb_queue_tail(&adapter->rx_data_q, skb);
1631                         atomic_inc(&adapter->rx_pending);
1632                         adapter->data_received = true;
1633                 } else {
1634                         mwifiex_deaggr_sdio_pkt(adapter, skb);
1635                         dev_kfree_skb_any(skb);
1636                 }
1637                 break;
1638
1639         case MWIFIEX_TYPE_DATA:
1640                 mwifiex_dbg(adapter, DATA,
1641                             "info: --- Rx: Data packet ---\n");
1642                 if (adapter->rx_work_enabled) {
1643                         skb_queue_tail(&adapter->rx_data_q, skb);
1644                         adapter->data_received = true;
1645                         atomic_inc(&adapter->rx_pending);
1646                 } else {
1647                         mwifiex_handle_rx_packet(adapter, skb);
1648                 }
1649                 break;
1650
1651         case MWIFIEX_TYPE_CMD:
1652                 mwifiex_dbg(adapter, CMD,
1653                             "info: --- Rx: Cmd Response ---\n");
1654                 /* take care of curr_cmd = NULL case */
1655                 if (!adapter->curr_cmd) {
1656                         cmd_buf = adapter->upld_buf;
1657
1658                         if (adapter->ps_state == PS_STATE_SLEEP_CFM)
1659                                 mwifiex_process_sleep_confirm_resp(adapter,
1660                                                                    skb->data,
1661                                                                    skb->len);
1662
1663                         memcpy(cmd_buf, skb->data,
1664                                min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER,
1665                                      skb->len));
1666
1667                         dev_kfree_skb_any(skb);
1668                 } else {
1669                         adapter->cmd_resp_received = true;
1670                         adapter->curr_cmd->resp_skb = skb;
1671                 }
1672                 break;
1673
1674         case MWIFIEX_TYPE_EVENT:
1675                 mwifiex_dbg(adapter, EVENT,
1676                             "info: --- Rx: Event ---\n");
1677                 adapter->event_cause = get_unaligned_le32(skb->data);
1678
1679                 if ((skb->len > 0) && (skb->len  < MAX_EVENT_SIZE))
1680                         memcpy(adapter->event_body,
1681                                skb->data + MWIFIEX_EVENT_HEADER_LEN,
1682                                skb->len);
1683
1684                 /* event cause has been saved to adapter->event_cause */
1685                 adapter->event_received = true;
1686                 adapter->event_skb = skb;
1687
1688                 break;
1689
1690         default:
1691                 mwifiex_dbg(adapter, ERROR,
1692                             "unknown upload type %#x\n", upld_typ);
1693                 dev_kfree_skb_any(skb);
1694                 break;
1695         }
1696
1697         return 0;
1698 }
1699
1700 /*
1701  * This function transfers received packets from card to driver, performing
1702  * aggregation if required.
1703  *
1704  * For data received on control port, or if aggregation is disabled, the
1705  * received buffers are uploaded as separate packets. However, if aggregation
1706  * is enabled and required, the buffers are copied onto an aggregation buffer,
1707  * provided there is space left, processed and finally uploaded.
1708  */
1709 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter,
1710                                              u16 rx_len, u8 port)
1711 {
1712         struct sdio_mmc_card *card = adapter->card;
1713         s32 f_do_rx_aggr = 0;
1714         s32 f_do_rx_cur = 0;
1715         s32 f_aggr_cur = 0;
1716         s32 f_post_aggr_cur = 0;
1717         struct sk_buff *skb_deaggr;
1718         struct sk_buff *skb = NULL;
1719         u32 pkt_len, pkt_type, mport, pind;
1720         u8 *curr_ptr;
1721
1722         if ((card->has_control_mask) && (port == CTRL_PORT)) {
1723                 /* Read the command Resp without aggr */
1724                 mwifiex_dbg(adapter, CMD,
1725                             "info: %s: no aggregation for cmd\t"
1726                             "response\n", __func__);
1727
1728                 f_do_rx_cur = 1;
1729                 goto rx_curr_single;
1730         }
1731
1732         if (!card->mpa_rx.enabled) {
1733                 mwifiex_dbg(adapter, WARN,
1734                             "info: %s: rx aggregation disabled\n",
1735                             __func__);
1736
1737                 f_do_rx_cur = 1;
1738                 goto rx_curr_single;
1739         }
1740
1741         if ((!card->has_control_mask && (card->mp_rd_bitmap &
1742                                          card->reg->data_port_mask)) ||
1743             (card->has_control_mask && (card->mp_rd_bitmap &
1744                                         (~((u32) CTRL_PORT_MASK))))) {
1745                 /* Some more data RX pending */
1746                 mwifiex_dbg(adapter, INFO,
1747                             "info: %s: not last packet\n", __func__);
1748
1749                 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1750                         if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) {
1751                                 f_aggr_cur = 1;
1752                         } else {
1753                                 /* No room in Aggr buf, do rx aggr now */
1754                                 f_do_rx_aggr = 1;
1755                                 f_post_aggr_cur = 1;
1756                         }
1757                 } else {
1758                         /* Rx aggr not in progress */
1759                         f_aggr_cur = 1;
1760                 }
1761
1762         } else {
1763                 /* No more data RX pending */
1764                 mwifiex_dbg(adapter, INFO,
1765                             "info: %s: last packet\n", __func__);
1766
1767                 if (MP_RX_AGGR_IN_PROGRESS(card)) {
1768                         f_do_rx_aggr = 1;
1769                         if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len))
1770                                 f_aggr_cur = 1;
1771                         else
1772                                 /* No room in Aggr buf, do rx aggr now */
1773                                 f_do_rx_cur = 1;
1774                 } else {
1775                         f_do_rx_cur = 1;
1776                 }
1777         }
1778
1779         if (f_aggr_cur) {
1780                 mwifiex_dbg(adapter, INFO,
1781                             "info: current packet aggregation\n");
1782                 /* Curr pkt can be aggregated */
1783                 mp_rx_aggr_setup(card, rx_len, port);
1784
1785                 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) ||
1786                     mp_rx_aggr_port_limit_reached(card)) {
1787                         mwifiex_dbg(adapter, INFO,
1788                                     "info: %s: aggregated packet\t"
1789                                     "limit reached\n", __func__);
1790                         /* No more pkts allowed in Aggr buf, rx it */
1791                         f_do_rx_aggr = 1;
1792                 }
1793         }
1794
1795         if (f_do_rx_aggr) {
1796                 /* do aggr RX now */
1797                 mwifiex_dbg(adapter, DATA,
1798                             "info: do_rx_aggr: num of packets: %d\n",
1799                             card->mpa_rx.pkt_cnt);
1800
1801                 if (card->supports_sdio_new_mode) {
1802                         int i;
1803                         u32 port_count;
1804
1805                         for (i = 0, port_count = 0; i < card->max_ports; i++)
1806                                 if (card->mpa_rx.ports & BIT(i))
1807                                         port_count++;
1808
1809                         /* Reading data from "start_port + 0" to "start_port +
1810                          * port_count -1", so decrease the count by 1
1811                          */
1812                         port_count--;
1813                         mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1814                                  (port_count << 8)) + card->mpa_rx.start_port;
1815                 } else {
1816                         mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
1817                                  (card->mpa_rx.ports << 4)) +
1818                                  card->mpa_rx.start_port;
1819                 }
1820
1821                 if (card->mpa_rx.pkt_cnt == 1)
1822                         mport = adapter->ioport + card->mpa_rx.start_port;
1823
1824                 if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf,
1825                                            card->mpa_rx.buf_len, mport, 1))
1826                         goto error;
1827
1828                 curr_ptr = card->mpa_rx.buf;
1829
1830                 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) {
1831                         u32 *len_arr = card->mpa_rx.len_arr;
1832
1833                         /* get curr PKT len & type */
1834                         pkt_len = get_unaligned_le16(&curr_ptr[0]);
1835                         pkt_type = get_unaligned_le16(&curr_ptr[2]);
1836
1837                         /* copy pkt to deaggr buf */
1838                         skb_deaggr = mwifiex_alloc_dma_align_buf(len_arr[pind],
1839                                                                  GFP_KERNEL);
1840                         if (!skb_deaggr) {
1841                                 mwifiex_dbg(adapter, ERROR, "skb allocation failure\t"
1842                                             "drop pkt len=%d type=%d\n",
1843                                             pkt_len, pkt_type);
1844                                 curr_ptr += len_arr[pind];
1845                                 continue;
1846                         }
1847
1848                         skb_put(skb_deaggr, len_arr[pind]);
1849
1850                         if ((pkt_type == MWIFIEX_TYPE_DATA ||
1851                              (pkt_type == MWIFIEX_TYPE_AGGR_DATA &&
1852                               adapter->sdio_rx_aggr_enable)) &&
1853                             (pkt_len <= len_arr[pind])) {
1854
1855                                 memcpy(skb_deaggr->data, curr_ptr, pkt_len);
1856
1857                                 skb_trim(skb_deaggr, pkt_len);
1858
1859                                 /* Process de-aggr packet */
1860                                 mwifiex_decode_rx_packet(adapter, skb_deaggr,
1861                                                          pkt_type);
1862                         } else {
1863                                 mwifiex_dbg(adapter, ERROR,
1864                                             "drop wrong aggr pkt:\t"
1865                                             "sdio_single_port_rx_aggr=%d\t"
1866                                             "type=%d len=%d max_len=%d\n",
1867                                             adapter->sdio_rx_aggr_enable,
1868                                             pkt_type, pkt_len, len_arr[pind]);
1869                                 dev_kfree_skb_any(skb_deaggr);
1870                         }
1871                         curr_ptr += len_arr[pind];
1872                 }
1873                 MP_RX_AGGR_BUF_RESET(card);
1874         }
1875
1876 rx_curr_single:
1877         if (f_do_rx_cur) {
1878                 mwifiex_dbg(adapter, INFO, "info: RX: port: %d, rx_len: %d\n",
1879                             port, rx_len);
1880
1881                 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL);
1882                 if (!skb) {
1883                         mwifiex_dbg(adapter, ERROR,
1884                                     "single skb allocated fail,\t"
1885                                     "drop pkt port=%d len=%d\n", port, rx_len);
1886                         if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1887                                                       card->mpa_rx.buf, rx_len,
1888                                                       adapter->ioport + port))
1889                                 goto error;
1890                         return 0;
1891                 }
1892
1893                 skb_put(skb, rx_len);
1894
1895                 if (mwifiex_sdio_card_to_host(adapter, &pkt_type,
1896                                               skb->data, skb->len,
1897                                               adapter->ioport + port))
1898                         goto error;
1899                 if (!adapter->sdio_rx_aggr_enable &&
1900                     pkt_type == MWIFIEX_TYPE_AGGR_DATA) {
1901                         mwifiex_dbg(adapter, ERROR, "drop wrong pkt type %d\t"
1902                                     "current SDIO RX Aggr not enabled\n",
1903                                     pkt_type);
1904                         dev_kfree_skb_any(skb);
1905                         return 0;
1906                 }
1907
1908                 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
1909         }
1910         if (f_post_aggr_cur) {
1911                 mwifiex_dbg(adapter, INFO,
1912                             "info: current packet aggregation\n");
1913                 /* Curr pkt can be aggregated */
1914                 mp_rx_aggr_setup(card, rx_len, port);
1915         }
1916
1917         return 0;
1918 error:
1919         if (MP_RX_AGGR_IN_PROGRESS(card))
1920                 MP_RX_AGGR_BUF_RESET(card);
1921
1922         if (f_do_rx_cur && skb)
1923                 /* Single transfer pending. Free curr buff also */
1924                 dev_kfree_skb_any(skb);
1925
1926         return -1;
1927 }
1928
1929 /*
1930  * This function checks the current interrupt status.
1931  *
1932  * The following interrupts are checked and handled by this function -
1933  *      - Data sent
1934  *      - Command sent
1935  *      - Packets received
1936  *
1937  * Since the firmware does not generate download ready interrupt if the
1938  * port updated is command port only, command sent interrupt checking
1939  * should be done manually, and for every SDIO interrupt.
1940  *
1941  * In case of Rx packets received, the packets are uploaded from card to
1942  * host and processed accordingly.
1943  */
1944 static int mwifiex_process_int_status(struct mwifiex_adapter *adapter)
1945 {
1946         struct sdio_mmc_card *card = adapter->card;
1947         const struct mwifiex_sdio_card_reg *reg = card->reg;
1948         int ret = 0;
1949         u8 sdio_ireg;
1950         struct sk_buff *skb;
1951         u8 port = CTRL_PORT;
1952         u32 len_reg_l, len_reg_u;
1953         u32 rx_blocks;
1954         u16 rx_len;
1955         unsigned long flags;
1956         u32 bitmap;
1957         u8 cr;
1958
1959         spin_lock_irqsave(&adapter->int_lock, flags);
1960         sdio_ireg = adapter->int_status;
1961         adapter->int_status = 0;
1962         spin_unlock_irqrestore(&adapter->int_lock, flags);
1963
1964         if (!sdio_ireg)
1965                 return ret;
1966
1967         /* Following interrupt is only for SDIO new mode */
1968         if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent)
1969                 adapter->cmd_sent = false;
1970
1971         /* Following interrupt is only for SDIO new mode */
1972         if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) {
1973                 u32 pkt_type;
1974
1975                 /* read the len of control packet */
1976                 rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8;
1977                 rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0];
1978                 rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE);
1979                 if (rx_len <= adapter->intf_hdr_len ||
1980                     (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
1981                      MWIFIEX_RX_DATA_BUF_SIZE)
1982                         return -1;
1983                 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
1984                 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n", rx_len);
1985
1986                 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL);
1987                 if (!skb)
1988                         return -1;
1989
1990                 skb_put(skb, rx_len);
1991
1992                 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data,
1993                                               skb->len, adapter->ioport |
1994                                                         CMD_PORT_SLCT)) {
1995                         mwifiex_dbg(adapter, ERROR,
1996                                     "%s: failed to card_to_host", __func__);
1997                         dev_kfree_skb_any(skb);
1998                         goto term_cmd;
1999                 }
2000
2001                 if ((pkt_type != MWIFIEX_TYPE_CMD) &&
2002                     (pkt_type != MWIFIEX_TYPE_EVENT))
2003                         mwifiex_dbg(adapter, ERROR,
2004                                     "%s:Received wrong packet on cmd port",
2005                                     __func__);
2006
2007                 mwifiex_decode_rx_packet(adapter, skb, pkt_type);
2008         }
2009
2010         if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
2011                 bitmap = (u32) card->mp_regs[reg->wr_bitmap_l];
2012                 bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8;
2013                 if (card->supports_sdio_new_mode) {
2014                         bitmap |=
2015                                 ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16;
2016                         bitmap |=
2017                                 ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24;
2018                 }
2019                 card->mp_wr_bitmap = bitmap;
2020
2021                 mwifiex_dbg(adapter, INTR,
2022                             "int: DNLD: wr_bitmap=0x%x\n",
2023                             card->mp_wr_bitmap);
2024                 if (adapter->data_sent &&
2025                     (card->mp_wr_bitmap & card->mp_data_port_mask)) {
2026                         mwifiex_dbg(adapter, INTR,
2027                                     "info:  <--- Tx DONE Interrupt --->\n");
2028                         adapter->data_sent = false;
2029                 }
2030         }
2031
2032         /* As firmware will not generate download ready interrupt if the port
2033            updated is command port only, cmd_sent should be done for any SDIO
2034            interrupt. */
2035         if (card->has_control_mask && adapter->cmd_sent) {
2036                 /* Check if firmware has attach buffer at command port and
2037                    update just that in wr_bit_map. */
2038                 card->mp_wr_bitmap |=
2039                         (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK;
2040                 if (card->mp_wr_bitmap & CTRL_PORT_MASK)
2041                         adapter->cmd_sent = false;
2042         }
2043
2044         mwifiex_dbg(adapter, INTR, "info: cmd_sent=%d data_sent=%d\n",
2045                     adapter->cmd_sent, adapter->data_sent);
2046         if (sdio_ireg & UP_LD_HOST_INT_STATUS) {
2047                 bitmap = (u32) card->mp_regs[reg->rd_bitmap_l];
2048                 bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8;
2049                 if (card->supports_sdio_new_mode) {
2050                         bitmap |=
2051                                 ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16;
2052                         bitmap |=
2053                                 ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24;
2054                 }
2055                 card->mp_rd_bitmap = bitmap;
2056                 mwifiex_dbg(adapter, INTR,
2057                             "int: UPLD: rd_bitmap=0x%x\n",
2058                             card->mp_rd_bitmap);
2059
2060                 while (true) {
2061                         ret = mwifiex_get_rd_port(adapter, &port);
2062                         if (ret) {
2063                                 mwifiex_dbg(adapter, INFO,
2064                                             "info: no more rd_port available\n");
2065                                 break;
2066                         }
2067                         len_reg_l = reg->rd_len_p0_l + (port << 1);
2068                         len_reg_u = reg->rd_len_p0_u + (port << 1);
2069                         rx_len = ((u16) card->mp_regs[len_reg_u]) << 8;
2070                         rx_len |= (u16) card->mp_regs[len_reg_l];
2071                         mwifiex_dbg(adapter, INFO,
2072                                     "info: RX: port=%d rx_len=%u\n",
2073                                     port, rx_len);
2074                         rx_blocks =
2075                                 (rx_len + MWIFIEX_SDIO_BLOCK_SIZE -
2076                                  1) / MWIFIEX_SDIO_BLOCK_SIZE;
2077                         if (rx_len <= adapter->intf_hdr_len ||
2078                             (card->mpa_rx.enabled &&
2079                              ((rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) >
2080                               card->mpa_rx.buf_size))) {
2081                                 mwifiex_dbg(adapter, ERROR,
2082                                             "invalid rx_len=%d\n",
2083                                             rx_len);
2084                                 return -1;
2085                         }
2086
2087                         rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE);
2088                         mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n",
2089                                     rx_len);
2090
2091                         if (mwifiex_sdio_card_to_host_mp_aggr(adapter, rx_len,
2092                                                               port)) {
2093                                 mwifiex_dbg(adapter, ERROR,
2094                                             "card_to_host_mpa failed: int status=%#x\n",
2095                                             sdio_ireg);
2096                                 goto term_cmd;
2097                         }
2098                 }
2099         }
2100
2101         return 0;
2102
2103 term_cmd:
2104         /* terminate cmd */
2105         if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
2106                 mwifiex_dbg(adapter, ERROR, "read CFG reg failed\n");
2107         else
2108                 mwifiex_dbg(adapter, INFO,
2109                             "info: CFG reg val = %d\n", cr);
2110
2111         if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04)))
2112                 mwifiex_dbg(adapter, ERROR,
2113                             "write CFG reg failed\n");
2114         else
2115                 mwifiex_dbg(adapter, INFO, "info: write success\n");
2116
2117         if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr))
2118                 mwifiex_dbg(adapter, ERROR,
2119                             "read CFG reg failed\n");
2120         else
2121                 mwifiex_dbg(adapter, INFO,
2122                             "info: CFG reg val =%x\n", cr);
2123
2124         return -1;
2125 }
2126
2127 /*
2128  * This function aggregates transmission buffers in driver and downloads
2129  * the aggregated packet to card.
2130  *
2131  * The individual packets are aggregated by copying into an aggregation
2132  * buffer and then downloaded to the card. Previous unsent packets in the
2133  * aggregation buffer are pre-copied first before new packets are added.
2134  * Aggregation is done till there is space left in the aggregation buffer,
2135  * or till new packets are available.
2136  *
2137  * The function will only download the packet to the card when aggregation
2138  * stops, otherwise it will just aggregate the packet in aggregation buffer
2139  * and return.
2140  */
2141 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter,
2142                                         u8 *payload, u32 pkt_len, u32 port,
2143                                         u32 next_pkt_len)
2144 {
2145         struct sdio_mmc_card *card = adapter->card;
2146         int ret = 0;
2147         s32 f_send_aggr_buf = 0;
2148         s32 f_send_cur_buf = 0;
2149         s32 f_precopy_cur_buf = 0;
2150         s32 f_postcopy_cur_buf = 0;
2151         u32 mport;
2152         int index;
2153
2154         if (!card->mpa_tx.enabled ||
2155             (card->has_control_mask && (port == CTRL_PORT)) ||
2156             (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) {
2157                 mwifiex_dbg(adapter, WARN,
2158                             "info: %s: tx aggregation disabled\n",
2159                             __func__);
2160
2161                 f_send_cur_buf = 1;
2162                 goto tx_curr_single;
2163         }
2164
2165         if (next_pkt_len) {
2166                 /* More pkt in TX queue */
2167                 mwifiex_dbg(adapter, INFO,
2168                             "info: %s: more packets in queue.\n",
2169                             __func__);
2170
2171                 if (MP_TX_AGGR_IN_PROGRESS(card)) {
2172                         if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) {
2173                                 f_precopy_cur_buf = 1;
2174
2175                                 if (!(card->mp_wr_bitmap &
2176                                       (1 << card->curr_wr_port)) ||
2177                                     !MP_TX_AGGR_BUF_HAS_ROOM(
2178                                             card, pkt_len + next_pkt_len))
2179                                         f_send_aggr_buf = 1;
2180                         } else {
2181                                 /* No room in Aggr buf, send it */
2182                                 f_send_aggr_buf = 1;
2183
2184                                 if (!(card->mp_wr_bitmap &
2185                                       (1 << card->curr_wr_port)))
2186                                         f_send_cur_buf = 1;
2187                                 else
2188                                         f_postcopy_cur_buf = 1;
2189                         }
2190                 } else {
2191                         if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) &&
2192                             (card->mp_wr_bitmap & (1 << card->curr_wr_port)))
2193                                 f_precopy_cur_buf = 1;
2194                         else
2195                                 f_send_cur_buf = 1;
2196                 }
2197         } else {
2198                 /* Last pkt in TX queue */
2199                 mwifiex_dbg(adapter, INFO,
2200                             "info: %s: Last packet in Tx Queue.\n",
2201                             __func__);
2202
2203                 if (MP_TX_AGGR_IN_PROGRESS(card)) {
2204                         /* some packs in Aggr buf already */
2205                         f_send_aggr_buf = 1;
2206
2207                         if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len))
2208                                 f_precopy_cur_buf = 1;
2209                         else
2210                                 /* No room in Aggr buf, send it */
2211                                 f_send_cur_buf = 1;
2212                 } else {
2213                         f_send_cur_buf = 1;
2214                 }
2215         }
2216
2217         if (f_precopy_cur_buf) {
2218                 mwifiex_dbg(adapter, DATA,
2219                             "data: %s: precopy current buffer\n",
2220                             __func__);
2221                 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
2222
2223                 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) ||
2224                     mp_tx_aggr_port_limit_reached(card))
2225                         /* No more pkts allowed in Aggr buf, send it */
2226                         f_send_aggr_buf = 1;
2227         }
2228
2229         if (f_send_aggr_buf) {
2230                 mwifiex_dbg(adapter, DATA,
2231                             "data: %s: send aggr buffer: %d %d\n",
2232                             __func__, card->mpa_tx.start_port,
2233                             card->mpa_tx.ports);
2234                 if (card->supports_sdio_new_mode) {
2235                         u32 port_count;
2236                         int i;
2237
2238                         for (i = 0, port_count = 0; i < card->max_ports; i++)
2239                                 if (card->mpa_tx.ports & BIT(i))
2240                                         port_count++;
2241
2242                         /* Writing data from "start_port + 0" to "start_port +
2243                          * port_count -1", so decrease the count by 1
2244                          */
2245                         port_count--;
2246                         mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
2247                                  (port_count << 8)) + card->mpa_tx.start_port;
2248                 } else {
2249                         mport = (adapter->ioport | SDIO_MPA_ADDR_BASE |
2250                                  (card->mpa_tx.ports << 4)) +
2251                                  card->mpa_tx.start_port;
2252                 }
2253
2254                 if (card->mpa_tx.pkt_cnt == 1)
2255                         mport = adapter->ioport + card->mpa_tx.start_port;
2256
2257                 ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf,
2258                                                  card->mpa_tx.buf_len, mport);
2259
2260                 /* Save the last multi port tx aggreagation info to debug log */
2261                 index = adapter->dbg.last_sdio_mp_index;
2262                 index = (index + 1) % MWIFIEX_DBG_SDIO_MP_NUM;
2263                 adapter->dbg.last_sdio_mp_index = index;
2264                 adapter->dbg.last_mp_wr_ports[index] = mport;
2265                 adapter->dbg.last_mp_wr_bitmap[index] = card->mp_wr_bitmap;
2266                 adapter->dbg.last_mp_wr_len[index] = card->mpa_tx.buf_len;
2267                 adapter->dbg.last_mp_curr_wr_port[index] = card->curr_wr_port;
2268
2269                 MP_TX_AGGR_BUF_RESET(card);
2270         }
2271
2272 tx_curr_single:
2273         if (f_send_cur_buf) {
2274                 mwifiex_dbg(adapter, DATA,
2275                             "data: %s: send current buffer %d\n",
2276                             __func__, port);
2277                 ret = mwifiex_write_data_to_card(adapter, payload, pkt_len,
2278                                                  adapter->ioport + port);
2279         }
2280
2281         if (f_postcopy_cur_buf) {
2282                 mwifiex_dbg(adapter, DATA,
2283                             "data: %s: postcopy current buffer\n",
2284                             __func__);
2285                 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port);
2286         }
2287
2288         return ret;
2289 }
2290
2291 /*
2292  * This function downloads data from driver to card.
2293  *
2294  * Both commands and data packets are transferred to the card by this
2295  * function.
2296  *
2297  * This function adds the SDIO specific header to the front of the buffer
2298  * before transferring. The header contains the length of the packet and
2299  * the type. The firmware handles the packets based upon this set type.
2300  */
2301 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter,
2302                                      u8 type, struct sk_buff *skb,
2303                                      struct mwifiex_tx_param *tx_param)
2304 {
2305         struct sdio_mmc_card *card = adapter->card;
2306         int ret;
2307         u32 buf_block_len;
2308         u32 blk_size;
2309         u32 port = CTRL_PORT;
2310         u8 *payload = (u8 *)skb->data;
2311         u32 pkt_len = skb->len;
2312
2313         /* Allocate buffer and copy payload */
2314         blk_size = MWIFIEX_SDIO_BLOCK_SIZE;
2315         buf_block_len = (pkt_len + blk_size - 1) / blk_size;
2316         put_unaligned_le16((u16)pkt_len, payload + 0);
2317         put_unaligned_le16((u32)type, payload + 2);
2318
2319
2320         /*
2321          * This is SDIO specific header
2322          *  u16 length,
2323          *  u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1,
2324          *  MWIFIEX_TYPE_EVENT = 3)
2325          */
2326         if (type == MWIFIEX_TYPE_DATA) {
2327                 ret = mwifiex_get_wr_port_data(adapter, &port);
2328                 if (ret) {
2329                         mwifiex_dbg(adapter, ERROR,
2330                                     "%s: no wr_port available\n",
2331                                     __func__);
2332                         return ret;
2333                 }
2334         } else {
2335                 adapter->cmd_sent = true;
2336                 /* Type must be MWIFIEX_TYPE_CMD */
2337
2338                 if (pkt_len <= adapter->intf_hdr_len ||
2339                     pkt_len > MWIFIEX_UPLD_SIZE)
2340                         mwifiex_dbg(adapter, ERROR,
2341                                     "%s: payload=%p, nb=%d\n",
2342                                     __func__, payload, pkt_len);
2343
2344                 if (card->supports_sdio_new_mode)
2345                         port = CMD_PORT_SLCT;
2346         }
2347
2348         /* Transfer data to card */
2349         pkt_len = buf_block_len * blk_size;
2350
2351         if (tx_param)
2352                 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
2353                                                    port, tx_param->next_pkt_len
2354                                                    );
2355         else
2356                 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len,
2357                                                    port, 0);
2358
2359         if (ret) {
2360                 if (type == MWIFIEX_TYPE_CMD)
2361                         adapter->cmd_sent = false;
2362                 if (type == MWIFIEX_TYPE_DATA) {
2363                         adapter->data_sent = false;
2364                         /* restore curr_wr_port in error cases */
2365                         card->curr_wr_port = port;
2366                         card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port);
2367                 }
2368         } else {
2369                 if (type == MWIFIEX_TYPE_DATA) {
2370                         if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port)))
2371                                 adapter->data_sent = true;
2372                         else
2373                                 adapter->data_sent = false;
2374                 }
2375         }
2376
2377         return ret;
2378 }
2379
2380 /*
2381  * This function allocates the MPA Tx and Rx buffers.
2382  */
2383 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter,
2384                                    u32 mpa_tx_buf_size, u32 mpa_rx_buf_size)
2385 {
2386         struct sdio_mmc_card *card = adapter->card;
2387         u32 rx_buf_size;
2388         int ret = 0;
2389
2390         card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL);
2391         if (!card->mpa_tx.buf) {
2392                 ret = -1;
2393                 goto error;
2394         }
2395
2396         card->mpa_tx.buf_size = mpa_tx_buf_size;
2397
2398         rx_buf_size = max_t(u32, mpa_rx_buf_size,
2399                             (u32)SDIO_MAX_AGGR_BUF_SIZE);
2400         card->mpa_rx.buf = kzalloc(rx_buf_size, GFP_KERNEL);
2401         if (!card->mpa_rx.buf) {
2402                 ret = -1;
2403                 goto error;
2404         }
2405
2406         card->mpa_rx.buf_size = rx_buf_size;
2407
2408 error:
2409         if (ret) {
2410                 kfree(card->mpa_tx.buf);
2411                 kfree(card->mpa_rx.buf);
2412                 card->mpa_tx.buf_size = 0;
2413                 card->mpa_rx.buf_size = 0;
2414                 card->mpa_tx.buf = NULL;
2415                 card->mpa_rx.buf = NULL;
2416         }
2417
2418         return ret;
2419 }
2420
2421 /*
2422  * This function unregisters the SDIO device.
2423  *
2424  * The SDIO IRQ is released, the function is disabled and driver
2425  * data is set to null.
2426  */
2427 static void
2428 mwifiex_unregister_dev(struct mwifiex_adapter *adapter)
2429 {
2430         struct sdio_mmc_card *card = adapter->card;
2431
2432         if (adapter->card) {
2433                 card->adapter = NULL;
2434                 sdio_claim_host(card->func);
2435                 sdio_disable_func(card->func);
2436                 sdio_release_host(card->func);
2437         }
2438 }
2439
2440 /*
2441  * This function registers the SDIO device.
2442  *
2443  * SDIO IRQ is claimed, block size is set and driver data is initialized.
2444  */
2445 static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
2446 {
2447         int ret;
2448         struct sdio_mmc_card *card = adapter->card;
2449         struct sdio_func *func = card->func;
2450         const char *firmware = card->firmware;
2451
2452         /* save adapter pointer in card */
2453         card->adapter = adapter;
2454         adapter->tx_buf_size = card->tx_buf_size;
2455
2456         sdio_claim_host(func);
2457
2458         /* Set block size */
2459         ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
2460         sdio_release_host(func);
2461         if (ret) {
2462                 mwifiex_dbg(adapter, ERROR,
2463                             "cannot set SDIO block size\n");
2464                 return ret;
2465         }
2466
2467         /* Select correct firmware (sdsd or sdiouart) firmware based on the strapping
2468          * option
2469          */
2470         if (card->firmware_sdiouart) {
2471                 u8 val;
2472
2473                 mwifiex_read_reg(adapter, card->reg->host_strap_reg, &val);
2474                 if ((val & card->reg->host_strap_mask) == card->reg->host_strap_value)
2475                         firmware = card->firmware_sdiouart;
2476         }
2477         strcpy(adapter->fw_name, firmware);
2478
2479         if (card->fw_dump_enh) {
2480                 adapter->mem_type_mapping_tbl = generic_mem_type_map;
2481                 adapter->num_mem_types = 1;
2482         } else {
2483                 adapter->mem_type_mapping_tbl = mem_type_mapping_tbl;
2484                 adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl);
2485         }
2486
2487         return 0;
2488 }
2489
2490 /*
2491  * This function initializes the SDIO driver.
2492  *
2493  * The following initializations steps are followed -
2494  *      - Read the Host interrupt status register to acknowledge
2495  *        the first interrupt got from bootloader
2496  *      - Disable host interrupt mask register
2497  *      - Get SDIO port
2498  *      - Initialize SDIO variables in card
2499  *      - Allocate MP registers
2500  *      - Allocate MPA Tx and Rx buffers
2501  */
2502 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter)
2503 {
2504         struct sdio_mmc_card *card = adapter->card;
2505         const struct mwifiex_sdio_card_reg *reg = card->reg;
2506         int ret;
2507         u8 sdio_ireg;
2508
2509         sdio_set_drvdata(card->func, card);
2510
2511         /*
2512          * Read the host_int_status_reg for ACK the first interrupt got
2513          * from the bootloader. If we don't do this we get a interrupt
2514          * as soon as we register the irq.
2515          */
2516         mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
2517
2518         /* Get SDIO ioport */
2519         mwifiex_init_sdio_ioport(adapter);
2520
2521         /* Initialize SDIO variables in card */
2522         card->mp_rd_bitmap = 0;
2523         card->mp_wr_bitmap = 0;
2524         card->curr_rd_port = reg->start_rd_port;
2525         card->curr_wr_port = reg->start_wr_port;
2526
2527         card->mp_data_port_mask = reg->data_port_mask;
2528
2529         card->mpa_tx.buf_len = 0;
2530         card->mpa_tx.pkt_cnt = 0;
2531         card->mpa_tx.start_port = 0;
2532
2533         card->mpa_tx.enabled = 1;
2534         card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit;
2535
2536         card->mpa_rx.buf_len = 0;
2537         card->mpa_rx.pkt_cnt = 0;
2538         card->mpa_rx.start_port = 0;
2539
2540         card->mpa_rx.enabled = 1;
2541         card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit;
2542
2543         /* Allocate buffers for SDIO MP-A */
2544         card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL);
2545         if (!card->mp_regs)
2546                 return -ENOMEM;
2547
2548         /* Allocate skb pointer buffers */
2549         card->mpa_rx.skb_arr = kcalloc(card->mp_agg_pkt_limit, sizeof(void *),
2550                                        GFP_KERNEL);
2551         if (!card->mpa_rx.skb_arr) {
2552                 kfree(card->mp_regs);
2553                 return -ENOMEM;
2554         }
2555
2556         card->mpa_rx.len_arr = kcalloc(card->mp_agg_pkt_limit,
2557                                        sizeof(*card->mpa_rx.len_arr),
2558                                        GFP_KERNEL);
2559         if (!card->mpa_rx.len_arr) {
2560                 kfree(card->mp_regs);
2561                 kfree(card->mpa_rx.skb_arr);
2562                 return -ENOMEM;
2563         }
2564
2565         ret = mwifiex_alloc_sdio_mpa_buffers(adapter,
2566                                              card->mp_tx_agg_buf_size,
2567                                              card->mp_rx_agg_buf_size);
2568
2569         /* Allocate 32k MPA Tx/Rx buffers if 64k memory allocation fails */
2570         if (ret && (card->mp_tx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX ||
2571                     card->mp_rx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX)) {
2572                 /* Disable rx single port aggregation */
2573                 adapter->host_disable_sdio_rx_aggr = true;
2574
2575                 ret = mwifiex_alloc_sdio_mpa_buffers
2576                         (adapter, MWIFIEX_MP_AGGR_BUF_SIZE_32K,
2577                          MWIFIEX_MP_AGGR_BUF_SIZE_32K);
2578                 if (ret) {
2579                         /* Disable multi port aggregation */
2580                         card->mpa_tx.enabled = 0;
2581                         card->mpa_rx.enabled = 0;
2582                 }
2583         }
2584
2585         adapter->auto_tdls = card->can_auto_tdls;
2586         adapter->ext_scan = card->can_ext_scan;
2587         return 0;
2588 }
2589
2590 /*
2591  * This function resets the MPA Tx and Rx buffers.
2592  */
2593 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter)
2594 {
2595         struct sdio_mmc_card *card = adapter->card;
2596
2597         MP_TX_AGGR_BUF_RESET(card);
2598         MP_RX_AGGR_BUF_RESET(card);
2599 }
2600
2601 /*
2602  * This function cleans up the allocated card buffers.
2603  *
2604  * The following are freed by this function -
2605  *      - MP registers
2606  *      - MPA Tx buffer
2607  *      - MPA Rx buffer
2608  */
2609 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter)
2610 {
2611         struct sdio_mmc_card *card = adapter->card;
2612
2613         cancel_work_sync(&card->work);
2614
2615         kfree(card->mp_regs);
2616         kfree(card->mpa_rx.skb_arr);
2617         kfree(card->mpa_rx.len_arr);
2618         kfree(card->mpa_tx.buf);
2619         kfree(card->mpa_rx.buf);
2620 }
2621
2622 /*
2623  * This function updates the MP end port in card.
2624  */
2625 static void
2626 mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port)
2627 {
2628         struct sdio_mmc_card *card = adapter->card;
2629         const struct mwifiex_sdio_card_reg *reg = card->reg;
2630         int i;
2631
2632         card->mp_end_port = port;
2633
2634         card->mp_data_port_mask = reg->data_port_mask;
2635
2636         if (reg->start_wr_port) {
2637                 for (i = 1; i <= card->max_ports - card->mp_end_port; i++)
2638                         card->mp_data_port_mask &=
2639                                         ~(1 << (card->max_ports - i));
2640         }
2641
2642         card->curr_wr_port = reg->start_wr_port;
2643
2644         mwifiex_dbg(adapter, CMD,
2645                     "cmd: mp_end_port %d, data port mask 0x%x\n",
2646                     port, card->mp_data_port_mask);
2647 }
2648
2649 static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter)
2650 {
2651         struct sdio_mmc_card *card = adapter->card;
2652         struct sdio_func *func = card->func;
2653         int ret;
2654
2655         /* Prepare the adapter for the reset. */
2656         mwifiex_shutdown_sw(adapter);
2657         clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &card->work_flags);
2658         clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags);
2659
2660         /* Run a HW reset of the SDIO interface. */
2661         sdio_claim_host(func);
2662         ret = mmc_hw_reset(func->card);
2663         sdio_release_host(func);
2664
2665         switch (ret) {
2666         case 1:
2667                 dev_dbg(&func->dev, "SDIO HW reset asynchronous\n");
2668                 complete_all(adapter->fw_done);
2669                 break;
2670         case 0:
2671                 ret = mwifiex_reinit_sw(adapter);
2672                 if (ret)
2673                         dev_err(&func->dev, "reinit failed: %d\n", ret);
2674                 break;
2675         default:
2676                 dev_err(&func->dev, "SDIO HW reset failed: %d\n", ret);
2677                 break;
2678         }
2679 }
2680
2681 /* This function read/write firmware */
2682 static enum
2683 rdwr_status mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter *adapter,
2684                                        u8 doneflag)
2685 {
2686         struct sdio_mmc_card *card = adapter->card;
2687         int ret, tries;
2688         u8 ctrl_data = 0;
2689
2690         sdio_writeb(card->func, card->reg->fw_dump_host_ready,
2691                     card->reg->fw_dump_ctrl, &ret);
2692         if (ret) {
2693                 mwifiex_dbg(adapter, ERROR, "SDIO Write ERR\n");
2694                 return RDWR_STATUS_FAILURE;
2695         }
2696         for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2697                 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
2698                                        &ret);
2699                 if (ret) {
2700                         mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
2701                         return RDWR_STATUS_FAILURE;
2702                 }
2703                 if (ctrl_data == FW_DUMP_DONE)
2704                         break;
2705                 if (doneflag && ctrl_data == doneflag)
2706                         return RDWR_STATUS_DONE;
2707                 if (ctrl_data != card->reg->fw_dump_host_ready) {
2708                         mwifiex_dbg(adapter, WARN,
2709                                     "The ctrl reg was changed, re-try again\n");
2710                         sdio_writeb(card->func, card->reg->fw_dump_host_ready,
2711                                     card->reg->fw_dump_ctrl, &ret);
2712                         if (ret) {
2713                                 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
2714                                 return RDWR_STATUS_FAILURE;
2715                         }
2716                 }
2717                 usleep_range(100, 200);
2718         }
2719         if (ctrl_data == card->reg->fw_dump_host_ready) {
2720                 mwifiex_dbg(adapter, ERROR,
2721                             "Fail to pull ctrl_data\n");
2722                 return RDWR_STATUS_FAILURE;
2723         }
2724
2725         return RDWR_STATUS_SUCCESS;
2726 }
2727
2728 /* This function dump firmware memory to file */
2729 static void mwifiex_sdio_fw_dump(struct mwifiex_adapter *adapter)
2730 {
2731         struct sdio_mmc_card *card = adapter->card;
2732         int ret = 0;
2733         unsigned int reg, reg_start, reg_end;
2734         u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0;
2735         enum rdwr_status stat;
2736         u32 memory_size;
2737
2738         if (!card->can_dump_fw)
2739                 return;
2740
2741         for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
2742                 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2743
2744                 if (entry->mem_ptr) {
2745                         vfree(entry->mem_ptr);
2746                         entry->mem_ptr = NULL;
2747                 }
2748                 entry->mem_size = 0;
2749         }
2750
2751         mwifiex_pm_wakeup_card(adapter);
2752         sdio_claim_host(card->func);
2753
2754         mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
2755
2756         stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2757         if (stat == RDWR_STATUS_FAILURE)
2758                 goto done;
2759
2760         reg = card->reg->fw_dump_start;
2761         /* Read the number of the memories which will dump */
2762         dump_num = sdio_readb(card->func, reg, &ret);
2763         if (ret) {
2764                 mwifiex_dbg(adapter, ERROR, "SDIO read memory length err\n");
2765                 goto done;
2766         }
2767
2768         /* Read the length of every memory which will dump */
2769         for (idx = 0; idx < dump_num; idx++) {
2770                 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
2771
2772                 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2773                 if (stat == RDWR_STATUS_FAILURE)
2774                         goto done;
2775
2776                 memory_size = 0;
2777                 reg = card->reg->fw_dump_start;
2778                 for (i = 0; i < 4; i++) {
2779                         read_reg = sdio_readb(card->func, reg, &ret);
2780                         if (ret) {
2781                                 mwifiex_dbg(adapter, ERROR, "SDIO read err\n");
2782                                 goto done;
2783                         }
2784                         memory_size |= (read_reg << i*8);
2785                         reg++;
2786                 }
2787
2788                 if (memory_size == 0) {
2789                         mwifiex_dbg(adapter, DUMP, "Firmware dump Finished!\n");
2790                         ret = mwifiex_write_reg(adapter,
2791                                                 card->reg->fw_dump_ctrl,
2792                                                 FW_DUMP_READ_DONE);
2793                         if (ret) {
2794                                 mwifiex_dbg(adapter, ERROR, "SDIO write err\n");
2795                                 return;
2796                         }
2797                         break;
2798                 }
2799
2800                 mwifiex_dbg(adapter, DUMP,
2801                             "%s_SIZE=0x%x\n", entry->mem_name, memory_size);
2802                 entry->mem_ptr = vmalloc(memory_size + 1);
2803                 entry->mem_size = memory_size;
2804                 if (!entry->mem_ptr) {
2805                         mwifiex_dbg(adapter, ERROR, "Vmalloc %s failed\n",
2806                                     entry->mem_name);
2807                         goto done;
2808                 }
2809                 dbg_ptr = entry->mem_ptr;
2810                 end_ptr = dbg_ptr + memory_size;
2811
2812                 doneflag = entry->done_flag;
2813                 mwifiex_dbg(adapter, DUMP,
2814                             "Start %s output, please wait...\n",
2815                             entry->mem_name);
2816
2817                 do {
2818                         stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag);
2819                         if (stat == RDWR_STATUS_FAILURE)
2820                                 goto done;
2821
2822                         reg_start = card->reg->fw_dump_start;
2823                         reg_end = card->reg->fw_dump_end;
2824                         for (reg = reg_start; reg <= reg_end; reg++) {
2825                                 *dbg_ptr = sdio_readb(card->func, reg, &ret);
2826                                 if (ret) {
2827                                         mwifiex_dbg(adapter, ERROR,
2828                                                     "SDIO read err\n");
2829                                         goto done;
2830                                 }
2831                                 if (dbg_ptr < end_ptr)
2832                                         dbg_ptr++;
2833                                 else
2834                                         mwifiex_dbg(adapter, ERROR,
2835                                                     "Allocated buf not enough\n");
2836                         }
2837
2838                         if (stat != RDWR_STATUS_DONE)
2839                                 continue;
2840
2841                         mwifiex_dbg(adapter, DUMP, "%s done: size=0x%tx\n",
2842                                     entry->mem_name, dbg_ptr - entry->mem_ptr);
2843                         break;
2844                 } while (1);
2845         }
2846         mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
2847
2848 done:
2849         sdio_release_host(card->func);
2850 }
2851
2852 static void mwifiex_sdio_generic_fw_dump(struct mwifiex_adapter *adapter)
2853 {
2854         struct sdio_mmc_card *card = adapter->card;
2855         struct memory_type_mapping *entry = &generic_mem_type_map[0];
2856         unsigned int reg, reg_start, reg_end;
2857         u8 start_flag = 0, done_flag = 0;
2858         u8 *dbg_ptr, *end_ptr;
2859         enum rdwr_status stat;
2860         int ret = -1, tries;
2861
2862         if (!card->fw_dump_enh)
2863                 return;
2864
2865         if (entry->mem_ptr) {
2866                 vfree(entry->mem_ptr);
2867                 entry->mem_ptr = NULL;
2868         }
2869         entry->mem_size = 0;
2870
2871         mwifiex_pm_wakeup_card(adapter);
2872         sdio_claim_host(card->func);
2873
2874         mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n");
2875
2876         stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2877         if (stat == RDWR_STATUS_FAILURE)
2878                 goto done;
2879
2880         reg_start = card->reg->fw_dump_start;
2881         reg_end = card->reg->fw_dump_end;
2882         for (reg = reg_start; reg <= reg_end; reg++) {
2883                 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
2884                         start_flag = sdio_readb(card->func, reg, &ret);
2885                         if (ret) {
2886                                 mwifiex_dbg(adapter, ERROR,
2887                                             "SDIO read err\n");
2888                                 goto done;
2889                         }
2890                         if (start_flag == 0)
2891                                 break;
2892                         if (tries == MAX_POLL_TRIES) {
2893                                 mwifiex_dbg(adapter, ERROR,
2894                                             "FW not ready to dump\n");
2895                                 ret = -1;
2896                                 goto done;
2897                         }
2898                 }
2899                 usleep_range(100, 200);
2900         }
2901
2902         entry->mem_ptr = vmalloc(0xf0000 + 1);
2903         if (!entry->mem_ptr) {
2904                 ret = -1;
2905                 goto done;
2906         }
2907         dbg_ptr = entry->mem_ptr;
2908         entry->mem_size = 0xf0000;
2909         end_ptr = dbg_ptr + entry->mem_size;
2910
2911         done_flag = entry->done_flag;
2912         mwifiex_dbg(adapter, DUMP,
2913                     "Start %s output, please wait...\n", entry->mem_name);
2914
2915         while (true) {
2916                 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag);
2917                 if (stat == RDWR_STATUS_FAILURE)
2918                         goto done;
2919                 for (reg = reg_start; reg <= reg_end; reg++) {
2920                         *dbg_ptr = sdio_readb(card->func, reg, &ret);
2921                         if (ret) {
2922                                 mwifiex_dbg(adapter, ERROR,
2923                                             "SDIO read err\n");
2924                                 goto done;
2925                         }
2926                         dbg_ptr++;
2927                         if (dbg_ptr >= end_ptr) {
2928                                 u8 *tmp_ptr;
2929
2930                                 tmp_ptr = vmalloc(entry->mem_size + 0x4000 + 1);
2931                                 if (!tmp_ptr)
2932                                         goto done;
2933
2934                                 memcpy(tmp_ptr, entry->mem_ptr,
2935                                        entry->mem_size);
2936                                 vfree(entry->mem_ptr);
2937                                 entry->mem_ptr = tmp_ptr;
2938                                 tmp_ptr = NULL;
2939                                 dbg_ptr = entry->mem_ptr + entry->mem_size;
2940                                 entry->mem_size += 0x4000;
2941                                 end_ptr = entry->mem_ptr + entry->mem_size;
2942                         }
2943                 }
2944                 if (stat == RDWR_STATUS_DONE) {
2945                         entry->mem_size = dbg_ptr - entry->mem_ptr;
2946                         mwifiex_dbg(adapter, DUMP, "dump %s done size=0x%x\n",
2947                                     entry->mem_name, entry->mem_size);
2948                         ret = 0;
2949                         break;
2950                 }
2951         }
2952         mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n");
2953
2954 done:
2955         if (ret) {
2956                 mwifiex_dbg(adapter, ERROR, "firmware dump failed\n");
2957                 if (entry->mem_ptr) {
2958                         vfree(entry->mem_ptr);
2959                         entry->mem_ptr = NULL;
2960                 }
2961                 entry->mem_size = 0;
2962         }
2963         sdio_release_host(card->func);
2964 }
2965
2966 static void mwifiex_sdio_device_dump_work(struct mwifiex_adapter *adapter)
2967 {
2968         struct sdio_mmc_card *card = adapter->card;
2969
2970         adapter->devdump_data = vzalloc(MWIFIEX_FW_DUMP_SIZE);
2971         if (!adapter->devdump_data) {
2972                 mwifiex_dbg(adapter, ERROR,
2973                             "vzalloc devdump data failure!\n");
2974                 return;
2975         }
2976
2977         mwifiex_drv_info_dump(adapter);
2978         if (card->fw_dump_enh)
2979                 mwifiex_sdio_generic_fw_dump(adapter);
2980         else
2981                 mwifiex_sdio_fw_dump(adapter);
2982         mwifiex_prepare_fw_dump_info(adapter);
2983         mwifiex_upload_device_dump(adapter);
2984 }
2985
2986 static void mwifiex_sdio_work(struct work_struct *work)
2987 {
2988         struct sdio_mmc_card *card =
2989                 container_of(work, struct sdio_mmc_card, work);
2990
2991         if (test_and_clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP,
2992                                &card->work_flags))
2993                 mwifiex_sdio_device_dump_work(card->adapter);
2994         if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET,
2995                                &card->work_flags))
2996                 mwifiex_sdio_card_reset_work(card->adapter);
2997 }
2998
2999 /* This function resets the card */
3000 static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter)
3001 {
3002         struct sdio_mmc_card *card = adapter->card;
3003
3004         if (!test_and_set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags))
3005                 schedule_work(&card->work);
3006 }
3007
3008 /* This function dumps FW information */
3009 static void mwifiex_sdio_device_dump(struct mwifiex_adapter *adapter)
3010 {
3011         struct sdio_mmc_card *card = adapter->card;
3012
3013         if (!test_and_set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP,
3014                               &card->work_flags))
3015                 schedule_work(&card->work);
3016 }
3017
3018 /* Function to dump SDIO function registers and SDIO scratch registers in case
3019  * of FW crash
3020  */
3021 static int
3022 mwifiex_sdio_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf)
3023 {
3024         char *p = drv_buf;
3025         struct sdio_mmc_card *cardp = adapter->card;
3026         int ret = 0;
3027         u8 count, func, data, index = 0, size = 0;
3028         u8 reg, reg_start, reg_end;
3029         char buf[256], *ptr;
3030
3031         if (!p)
3032                 return 0;
3033
3034         mwifiex_dbg(adapter, MSG, "SDIO register dump start\n");
3035
3036         mwifiex_pm_wakeup_card(adapter);
3037
3038         sdio_claim_host(cardp->func);
3039
3040         for (count = 0; count < 5; count++) {
3041                 memset(buf, 0, sizeof(buf));
3042                 ptr = buf;
3043
3044                 switch (count) {
3045                 case 0:
3046                         /* Read the registers of SDIO function0 */
3047                         func = count;
3048                         reg_start = 0;
3049                         reg_end = 9;
3050                         break;
3051                 case 1:
3052                         /* Read the registers of SDIO function1 */
3053                         func = count;
3054                         reg_start = cardp->reg->func1_dump_reg_start;
3055                         reg_end = cardp->reg->func1_dump_reg_end;
3056                         break;
3057                 case 2:
3058                         index = 0;
3059                         func = 1;
3060                         reg_start = cardp->reg->func1_spec_reg_table[index++];
3061                         size = cardp->reg->func1_spec_reg_num;
3062                         reg_end = cardp->reg->func1_spec_reg_table[size-1];
3063                         break;
3064                 default:
3065                         /* Read the scratch registers of SDIO function1 */
3066                         if (count == 4)
3067                                 mdelay(100);
3068                         func = 1;
3069                         reg_start = cardp->reg->func1_scratch_reg;
3070                         reg_end = reg_start + MWIFIEX_SDIO_SCRATCH_SIZE;
3071                 }
3072
3073                 if (count != 2)
3074                         ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
3075                                        func, reg_start, reg_end);
3076                 else
3077                         ptr += sprintf(ptr, "SDIO Func%d: ", func);
3078
3079                 for (reg = reg_start; reg <= reg_end;) {
3080                         if (func == 0)
3081                                 data = sdio_f0_readb(cardp->func, reg, &ret);
3082                         else
3083                                 data = sdio_readb(cardp->func, reg, &ret);
3084
3085                         if (count == 2)
3086                                 ptr += sprintf(ptr, "(%#x) ", reg);
3087                         if (!ret) {
3088                                 ptr += sprintf(ptr, "%02x ", data);
3089                         } else {
3090                                 ptr += sprintf(ptr, "ERR");
3091                                 break;
3092                         }
3093
3094                         if (count == 2 && reg < reg_end)
3095                                 reg = cardp->reg->func1_spec_reg_table[index++];
3096                         else
3097                                 reg++;
3098                 }
3099
3100                 mwifiex_dbg(adapter, MSG, "%s\n", buf);
3101                 p += sprintf(p, "%s\n", buf);
3102         }
3103
3104         sdio_release_host(cardp->func);
3105
3106         mwifiex_dbg(adapter, MSG, "SDIO register dump end\n");
3107
3108         return p - drv_buf;
3109 }
3110
3111 /* sdio device/function initialization, code is extracted
3112  * from init_if handler and register_dev handler.
3113  */
3114 static void mwifiex_sdio_up_dev(struct mwifiex_adapter *adapter)
3115 {
3116         struct sdio_mmc_card *card = adapter->card;
3117         u8 sdio_ireg;
3118
3119         sdio_claim_host(card->func);
3120         sdio_enable_func(card->func);
3121         sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE);
3122         sdio_release_host(card->func);
3123
3124         /* tx_buf_size might be changed to 3584 by firmware during
3125          * data transfer, we will reset to default size.
3126          */
3127         adapter->tx_buf_size = card->tx_buf_size;
3128
3129         /* Read the host_int_status_reg for ACK the first interrupt got
3130          * from the bootloader. If we don't do this we get a interrupt
3131          * as soon as we register the irq.
3132          */
3133         mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg);
3134
3135         mwifiex_init_sdio_ioport(adapter);
3136 }
3137
3138 static struct mwifiex_if_ops sdio_ops = {
3139         .init_if = mwifiex_init_sdio,
3140         .cleanup_if = mwifiex_cleanup_sdio,
3141         .check_fw_status = mwifiex_check_fw_status,
3142         .check_winner_status = mwifiex_check_winner_status,
3143         .prog_fw = mwifiex_prog_fw_w_helper,
3144         .register_dev = mwifiex_register_dev,
3145         .unregister_dev = mwifiex_unregister_dev,
3146         .enable_int = mwifiex_sdio_enable_host_int,
3147         .disable_int = mwifiex_sdio_disable_host_int,
3148         .process_int_status = mwifiex_process_int_status,
3149         .host_to_card = mwifiex_sdio_host_to_card,
3150         .wakeup = mwifiex_pm_wakeup_card,
3151         .wakeup_complete = mwifiex_pm_wakeup_card_complete,
3152
3153         /* SDIO specific */
3154         .update_mp_end_port = mwifiex_update_mp_end_port,
3155         .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf,
3156         .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete,
3157         .event_complete = mwifiex_sdio_event_complete,
3158         .dnld_fw = mwifiex_sdio_dnld_fw,
3159         .card_reset = mwifiex_sdio_card_reset,
3160         .reg_dump = mwifiex_sdio_reg_dump,
3161         .device_dump = mwifiex_sdio_device_dump,
3162         .deaggr_pkt = mwifiex_deaggr_sdio_pkt,
3163         .up_dev = mwifiex_sdio_up_dev,
3164 };
3165
3166 module_driver(mwifiex_sdio, sdio_register_driver, sdio_unregister_driver);
3167
3168 MODULE_AUTHOR("Marvell International Ltd.");
3169 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION);
3170 MODULE_VERSION(SDIO_VERSION);
3171 MODULE_LICENSE("GPL v2");
3172 /*(DEBLOBBED)*/