drivers/net/wireless/marvell/mwifiex/pcie.h

   1 /* @file mwifiex_pcie.h
   2  *
   3  * @brief This file contains definitions for PCI-E interface.
   4  * driver.
   5  *
   6  * Copyright (C) 2011-2014, Marvell International Ltd.
   7  *
   8  * This software file (the "File") is distributed by Marvell International
   9  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
  10  * (the "License").  You may use, redistribute and/or modify this File in
  11  * accordance with the terms and conditions of the License, a copy of which
  12  * is available by writing to the Free Software Foundation, Inc.,
  13  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  14  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  15  *
  16  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  19  * this warranty disclaimer.
  20  */
  21
  22 #ifndef _MWIFIEX_PCIE_H
  23 #define _MWIFIEX_PCIE_H
  24
  25 #include    <linux/completion.h>
  26 #include    <linux/pci.h>
  27 #include    <linux/interrupt.h>
  28
  29 #include    "decl.h"
  30 #include    "main.h"
  31
  32 #define PCIE8766_DEFAULT_FW_NAME "mrvl/pcie8766_uapsta.bin"
  33 #define PCIE8897_DEFAULT_FW_NAME "mrvl/pcie8897_uapsta.bin"
  34 #define PCIE8897_A0_FW_NAME "mrvl/pcie8897_uapsta_a0.bin"
  35 #define PCIE8897_B0_FW_NAME "mrvl/pcie8897_uapsta.bin"
  36 #define PCIEUART8997_FW_NAME_V4 "mrvl/pcieuart8997_combo_v4.bin"
  37 #define PCIEUSB8997_FW_NAME_V4 "mrvl/pcieusb8997_combo_v4.bin"
  38
  39 #define PCIE_VENDOR_ID_MARVELL              (0x11ab)
  40 #define PCIE_VENDOR_ID_V2_MARVELL           (0x1b4b)
  41 #define PCIE_DEVICE_ID_MARVELL_88W8766P         (0x2b30)
  42 #define PCIE_DEVICE_ID_MARVELL_88W8897          (0x2b38)
  43 #define PCIE_DEVICE_ID_MARVELL_88W8997          (0x2b42)
  44
  45 #define PCIE8897_A0     0x1100
  46 #define PCIE8897_B0     0x1200
  47 #define PCIE8997_A0     0x10
  48 #define PCIE8997_A1     0x11
  49 #define CHIP_VER_PCIEUART       0x3
  50 #define CHIP_MAGIC_VALUE        0x24
  51
  52 /* Constants for Buffer Descriptor (BD) rings */
  53 #define MWIFIEX_MAX_TXRX_BD                     0x20
  54 #define MWIFIEX_TXBD_MASK                       0x3F
  55 #define MWIFIEX_RXBD_MASK                       0x3F
  56
  57 #define MWIFIEX_MAX_EVT_BD                      0x08
  58 #define MWIFIEX_EVTBD_MASK                      0x0f
  59
  60 /* PCIE INTERNAL REGISTERS */
  61 #define PCIE_SCRATCH_0_REG                              0xC10
  62 #define PCIE_SCRATCH_1_REG                              0xC14
  63 #define PCIE_CPU_INT_EVENT                              0xC18
  64 #define PCIE_CPU_INT_STATUS                             0xC1C
  65 #define PCIE_HOST_INT_STATUS                            0xC30
  66 #define PCIE_HOST_INT_MASK                              0xC34
  67 #define PCIE_HOST_INT_STATUS_MASK                       0xC3C
  68 #define PCIE_SCRATCH_2_REG                              0xC40
  69 #define PCIE_SCRATCH_3_REG                              0xC44
  70 #define PCIE_SCRATCH_4_REG                              0xCD0
  71 #define PCIE_SCRATCH_5_REG                              0xCD4
  72 #define PCIE_SCRATCH_6_REG                              0xCD8
  73 #define PCIE_SCRATCH_7_REG                              0xCDC
  74 #define PCIE_SCRATCH_8_REG                              0xCE0
  75 #define PCIE_SCRATCH_9_REG                              0xCE4
  76 #define PCIE_SCRATCH_10_REG                             0xCE8
  77 #define PCIE_SCRATCH_11_REG                             0xCEC
  78 #define PCIE_SCRATCH_12_REG                             0xCF0
  79 #define PCIE_SCRATCH_13_REG                             0xCF4
  80 #define PCIE_SCRATCH_14_REG                             0xCF8
  81 #define PCIE_SCRATCH_15_REG                             0xCFC
  82 #define PCIE_RD_DATA_PTR_Q0_Q1                          0xC08C
  83 #define PCIE_WR_DATA_PTR_Q0_Q1                          0xC05C
  84
  85 #define CPU_INTR_DNLD_RDY                               BIT(0)
  86 #define CPU_INTR_DOOR_BELL                              BIT(1)
  87 #define CPU_INTR_SLEEP_CFM_DONE                 BIT(2)
  88 #define CPU_INTR_RESET                                  BIT(3)
  89 #define CPU_INTR_EVENT_DONE                             BIT(5)
  90
  91 #define HOST_INTR_DNLD_DONE                             BIT(0)
  92 #define HOST_INTR_UPLD_RDY                              BIT(1)
  93 #define HOST_INTR_CMD_DONE                              BIT(2)
  94 #define HOST_INTR_EVENT_RDY                             BIT(3)
  95 #define HOST_INTR_MASK                                  (HOST_INTR_DNLD_DONE | \
  96                                                          HOST_INTR_UPLD_RDY  | \
  97                                                          HOST_INTR_CMD_DONE  | \
  98                                                          HOST_INTR_EVENT_RDY)
  99
 100 #define MWIFIEX_BD_FLAG_ROLLOVER_IND                    BIT(7)
 101 #define MWIFIEX_BD_FLAG_FIRST_DESC                      BIT(0)
 102 #define MWIFIEX_BD_FLAG_LAST_DESC                       BIT(1)
 103 #define MWIFIEX_BD_FLAG_SOP                             BIT(0)
 104 #define MWIFIEX_BD_FLAG_EOP                             BIT(1)
 105 #define MWIFIEX_BD_FLAG_XS_SOP                          BIT(2)
 106 #define MWIFIEX_BD_FLAG_XS_EOP                          BIT(3)
 107 #define MWIFIEX_BD_FLAG_EVT_ROLLOVER_IND                BIT(7)
 108 #define MWIFIEX_BD_FLAG_RX_ROLLOVER_IND                 BIT(10)
 109 #define MWIFIEX_BD_FLAG_TX_START_PTR                    BIT(16)
 110 #define MWIFIEX_BD_FLAG_TX_ROLLOVER_IND                 BIT(26)
 111
 112 /* Max retry number of command write */
 113 #define MAX_WRITE_IOMEM_RETRY                           2
 114 /* Define PCIE block size for firmware download */
 115 #define MWIFIEX_PCIE_BLOCK_SIZE_FW_DNLD         256
 116 /* FW awake cookie after FW ready */
 117 #define FW_AWAKE_COOKIE                                         (0xAA55AA55)
 118 #define MWIFIEX_DEF_SLEEP_COOKIE                        0xBEEFBEEF
 119 #define MWIFIEX_SLEEP_COOKIE_SIZE                       4
 120 #define MWIFIEX_MAX_DELAY_COUNT                         100
 121
 122 #define MWIFIEX_PCIE_FLR_HAPPENS 0xFEDCBABA
 123
 124 struct mwifiex_pcie_card_reg {
 125         u16 cmd_addr_lo;
 126         u16 cmd_addr_hi;
 127         u16 fw_status;
 128         u16 cmd_size;
 129         u16 cmdrsp_addr_lo;
 130         u16 cmdrsp_addr_hi;
 131         u16 tx_rdptr;
 132         u16 tx_wrptr;
 133         u16 rx_rdptr;
 134         u16 rx_wrptr;
 135         u16 evt_rdptr;
 136         u16 evt_wrptr;
 137         u16 drv_rdy;
 138         u16 tx_start_ptr;
 139         u32 tx_mask;
 140         u32 tx_wrap_mask;
 141         u32 rx_mask;
 142         u32 rx_wrap_mask;
 143         u32 tx_rollover_ind;
 144         u32 rx_rollover_ind;
 145         u32 evt_rollover_ind;
 146         u8 ring_flag_sop;
 147         u8 ring_flag_eop;
 148         u8 ring_flag_xs_sop;
 149         u8 ring_flag_xs_eop;
 150         u32 ring_tx_start_ptr;
 151         u8 pfu_enabled;
 152         u8 sleep_cookie;
 153         u16 fw_dump_ctrl;
 154         u16 fw_dump_start;
 155         u16 fw_dump_end;
 156         u8 fw_dump_host_ready;
 157         u8 fw_dump_read_done;
 158         u8 msix_support;
 159 };
 160
 161 static const struct mwifiex_pcie_card_reg mwifiex_reg_8766 = {
 162         .cmd_addr_lo = PCIE_SCRATCH_0_REG,
 163         .cmd_addr_hi = PCIE_SCRATCH_1_REG,
 164         .cmd_size = PCIE_SCRATCH_2_REG,
 165         .fw_status = PCIE_SCRATCH_3_REG,
 166         .cmdrsp_addr_lo = PCIE_SCRATCH_4_REG,
 167         .cmdrsp_addr_hi = PCIE_SCRATCH_5_REG,
 168         .tx_rdptr = PCIE_SCRATCH_6_REG,
 169         .tx_wrptr = PCIE_SCRATCH_7_REG,
 170         .rx_rdptr = PCIE_SCRATCH_8_REG,
 171         .rx_wrptr = PCIE_SCRATCH_9_REG,
 172         .evt_rdptr = PCIE_SCRATCH_10_REG,
 173         .evt_wrptr = PCIE_SCRATCH_11_REG,
 174         .drv_rdy = PCIE_SCRATCH_12_REG,
 175         .tx_start_ptr = 0,
 176         .tx_mask = MWIFIEX_TXBD_MASK,
 177         .tx_wrap_mask = 0,
 178         .rx_mask = MWIFIEX_RXBD_MASK,
 179         .rx_wrap_mask = 0,
 180         .tx_rollover_ind = MWIFIEX_BD_FLAG_ROLLOVER_IND,
 181         .rx_rollover_ind = MWIFIEX_BD_FLAG_ROLLOVER_IND,
 182         .evt_rollover_ind = MWIFIEX_BD_FLAG_ROLLOVER_IND,
 183         .ring_flag_sop = 0,
 184         .ring_flag_eop = 0,
 185         .ring_flag_xs_sop = 0,
 186         .ring_flag_xs_eop = 0,
 187         .ring_tx_start_ptr = 0,
 188         .pfu_enabled = 0,
 189         .sleep_cookie = 1,
 190         .msix_support = 0,
 191 };
 192
 193 static const struct mwifiex_pcie_card_reg mwifiex_reg_8897 = {
 194         .cmd_addr_lo = PCIE_SCRATCH_0_REG,
 195         .cmd_addr_hi = PCIE_SCRATCH_1_REG,
 196         .cmd_size = PCIE_SCRATCH_2_REG,
 197         .fw_status = PCIE_SCRATCH_3_REG,
 198         .cmdrsp_addr_lo = PCIE_SCRATCH_4_REG,
 199         .cmdrsp_addr_hi = PCIE_SCRATCH_5_REG,
 200         .tx_rdptr = PCIE_RD_DATA_PTR_Q0_Q1,
 201         .tx_wrptr = PCIE_WR_DATA_PTR_Q0_Q1,
 202         .rx_rdptr = PCIE_WR_DATA_PTR_Q0_Q1,
 203         .rx_wrptr = PCIE_RD_DATA_PTR_Q0_Q1,
 204         .evt_rdptr = PCIE_SCRATCH_10_REG,
 205         .evt_wrptr = PCIE_SCRATCH_11_REG,
 206         .drv_rdy = PCIE_SCRATCH_12_REG,
 207         .tx_start_ptr = 16,
 208         .tx_mask = 0x03FF0000,
 209         .tx_wrap_mask = 0x07FF0000,
 210         .rx_mask = 0x000003FF,
 211         .rx_wrap_mask = 0x000007FF,
 212         .tx_rollover_ind = MWIFIEX_BD_FLAG_TX_ROLLOVER_IND,
 213         .rx_rollover_ind = MWIFIEX_BD_FLAG_RX_ROLLOVER_IND,
 214         .evt_rollover_ind = MWIFIEX_BD_FLAG_EVT_ROLLOVER_IND,
 215         .ring_flag_sop = MWIFIEX_BD_FLAG_SOP,
 216         .ring_flag_eop = MWIFIEX_BD_FLAG_EOP,
 217         .ring_flag_xs_sop = MWIFIEX_BD_FLAG_XS_SOP,
 218         .ring_flag_xs_eop = MWIFIEX_BD_FLAG_XS_EOP,
 219         .ring_tx_start_ptr = MWIFIEX_BD_FLAG_TX_START_PTR,
 220         .pfu_enabled = 1,
 221         .sleep_cookie = 0,
 222         .fw_dump_ctrl = PCIE_SCRATCH_13_REG,
 223         .fw_dump_start = PCIE_SCRATCH_14_REG,
 224         .fw_dump_end = 0xcff,
 225         .fw_dump_host_ready = 0xee,
 226         .fw_dump_read_done = 0xfe,
 227         .msix_support = 0,
 228 };
 229
 230 static const struct mwifiex_pcie_card_reg mwifiex_reg_8997 = {
 231         .cmd_addr_lo = PCIE_SCRATCH_0_REG,
 232         .cmd_addr_hi = PCIE_SCRATCH_1_REG,
 233         .cmd_size = PCIE_SCRATCH_2_REG,
 234         .fw_status = PCIE_SCRATCH_3_REG,
 235         .cmdrsp_addr_lo = PCIE_SCRATCH_4_REG,
 236         .cmdrsp_addr_hi = PCIE_SCRATCH_5_REG,
 237         .tx_rdptr = 0xC1A4,
 238         .tx_wrptr = 0xC174,
 239         .rx_rdptr = 0xC174,
 240         .rx_wrptr = 0xC1A4,
 241         .evt_rdptr = PCIE_SCRATCH_10_REG,
 242         .evt_wrptr = PCIE_SCRATCH_11_REG,
 243         .drv_rdy = PCIE_SCRATCH_12_REG,
 244         .tx_start_ptr = 16,
 245         .tx_mask = 0x0FFF0000,
 246         .tx_wrap_mask = 0x1FFF0000,
 247         .rx_mask = 0x00000FFF,
 248         .rx_wrap_mask = 0x00001FFF,
 249         .tx_rollover_ind = BIT(28),
 250         .rx_rollover_ind = BIT(12),
 251         .evt_rollover_ind = MWIFIEX_BD_FLAG_EVT_ROLLOVER_IND,
 252         .ring_flag_sop = MWIFIEX_BD_FLAG_SOP,
 253         .ring_flag_eop = MWIFIEX_BD_FLAG_EOP,
 254         .ring_flag_xs_sop = MWIFIEX_BD_FLAG_XS_SOP,
 255         .ring_flag_xs_eop = MWIFIEX_BD_FLAG_XS_EOP,
 256         .ring_tx_start_ptr = MWIFIEX_BD_FLAG_TX_START_PTR,
 257         .pfu_enabled = 1,
 258         .sleep_cookie = 0,
 259         .fw_dump_ctrl = PCIE_SCRATCH_13_REG,
 260         .fw_dump_start = PCIE_SCRATCH_14_REG,
 261         .fw_dump_end = 0xcff,
 262         .fw_dump_host_ready = 0xcc,
 263         .fw_dump_read_done = 0xdd,
 264         .msix_support = 0,
 265 };
 266
 267 static struct memory_type_mapping mem_type_mapping_tbl_w8897[] = {
 268         {"ITCM", NULL, 0, 0xF0},
 269         {"DTCM", NULL, 0, 0xF1},
 270         {"SQRAM", NULL, 0, 0xF2},
 271         {"IRAM", NULL, 0, 0xF3},
 272         {"APU", NULL, 0, 0xF4},
 273         {"CIU", NULL, 0, 0xF5},
 274         {"ICU", NULL, 0, 0xF6},
 275         {"MAC", NULL, 0, 0xF7},
 276 };
 277
 278 static struct memory_type_mapping mem_type_mapping_tbl_w8997[] = {
 279         {"DUMP", NULL, 0, 0xDD},
 280 };
 281
 282 struct mwifiex_pcie_device {
 283         const struct mwifiex_pcie_card_reg *reg;
 284         u16 blksz_fw_dl;
 285         u16 tx_buf_size;
 286         bool can_dump_fw;
 287         struct memory_type_mapping *mem_type_mapping_tbl;
 288         u8 num_mem_types;
 289         bool can_ext_scan;
 290 };
 291
 292 static const struct mwifiex_pcie_device mwifiex_pcie8766 = {
 293         .reg            = &mwifiex_reg_8766,
 294         .blksz_fw_dl = MWIFIEX_PCIE_BLOCK_SIZE_FW_DNLD,
 295         .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K,
 296         .can_dump_fw = false,
 297         .can_ext_scan = true,
 298 };
 299
 300 static const struct mwifiex_pcie_device mwifiex_pcie8897 = {
 301         .reg            = &mwifiex_reg_8897,
 302         .blksz_fw_dl = MWIFIEX_PCIE_BLOCK_SIZE_FW_DNLD,
 303         .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K,
 304         .can_dump_fw = true,
 305         .mem_type_mapping_tbl = mem_type_mapping_tbl_w8897,
 306         .num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl_w8897),
 307         .can_ext_scan = true,
 308 };
 309
 310 static const struct mwifiex_pcie_device mwifiex_pcie8997 = {
 311         .reg            = &mwifiex_reg_8997,
 312         .blksz_fw_dl = MWIFIEX_PCIE_BLOCK_SIZE_FW_DNLD,
 313         .tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_4K,
 314         .can_dump_fw = true,
 315         .mem_type_mapping_tbl = mem_type_mapping_tbl_w8997,
 316         .num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl_w8997),
 317         .can_ext_scan = true,
 318 };
 319
 320 struct mwifiex_evt_buf_desc {
 321         u64 paddr;
 322         u16 len;
 323         u16 flags;
 324 } __packed;
 325
 326 struct mwifiex_pcie_buf_desc {
 327         u64 paddr;
 328         u16 len;
 329         u16 flags;
 330 } __packed;
 331
 332 struct mwifiex_pfu_buf_desc {
 333         u16 flags;
 334         u16 offset;
 335         u16 frag_len;
 336         u16 len;
 337         u64 paddr;
 338         u32 reserved;
 339 } __packed;
 340
 341 #define MWIFIEX_NUM_MSIX_VECTORS   4
 342
 343 struct mwifiex_msix_context {
 344         struct pci_dev *dev;
 345         u16 msg_id;
 346 };
 347
 348 struct pcie_service_card {
 349         struct pci_dev *dev;
 350         struct mwifiex_adapter *adapter;
 351         struct mwifiex_pcie_device pcie;
 352         struct completion fw_done;
 353
 354         u8 txbd_flush;
 355         u32 txbd_wrptr;
 356         u32 txbd_rdptr;
 357         u32 txbd_ring_size;
 358         u8 *txbd_ring_vbase;
 359         dma_addr_t txbd_ring_pbase;
 360         void *txbd_ring[MWIFIEX_MAX_TXRX_BD];
 361         struct sk_buff *tx_buf_list[MWIFIEX_MAX_TXRX_BD];
 362
 363         u32 rxbd_wrptr;
 364         u32 rxbd_rdptr;
 365         u32 rxbd_ring_size;
 366         u8 *rxbd_ring_vbase;
 367         dma_addr_t rxbd_ring_pbase;
 368         void *rxbd_ring[MWIFIEX_MAX_TXRX_BD];
 369         struct sk_buff *rx_buf_list[MWIFIEX_MAX_TXRX_BD];
 370
 371         u32 evtbd_wrptr;
 372         u32 evtbd_rdptr;
 373         u32 evtbd_ring_size;
 374         u8 *evtbd_ring_vbase;
 375         dma_addr_t evtbd_ring_pbase;
 376         void *evtbd_ring[MWIFIEX_MAX_EVT_BD];
 377         struct sk_buff *evt_buf_list[MWIFIEX_MAX_EVT_BD];
 378
 379         struct sk_buff *cmd_buf;
 380         struct sk_buff *cmdrsp_buf;
 381         u8 *sleep_cookie_vbase;
 382         dma_addr_t sleep_cookie_pbase;
 383         void __iomem *pci_mmap;
 384         void __iomem *pci_mmap1;
 385         int msi_enable;
 386         int msix_enable;
 387 #ifdef CONFIG_PCI
 388         struct msix_entry msix_entries[MWIFIEX_NUM_MSIX_VECTORS];
 389 #endif
 390         struct mwifiex_msix_context msix_ctx[MWIFIEX_NUM_MSIX_VECTORS];
 391         struct mwifiex_msix_context share_irq_ctx;
 392         struct work_struct work;
 393         unsigned long work_flags;
 394 };
 395
 396 static inline int
 397 mwifiex_pcie_txbd_empty(struct pcie_service_card *card, u32 rdptr)
 398 {
 399         const struct mwifiex_pcie_card_reg *reg = card->pcie.reg;
 400
 401         switch (card->dev->device) {
 402         case PCIE_DEVICE_ID_MARVELL_88W8766P:
 403                 if (((card->txbd_wrptr & reg->tx_mask) ==
 404                      (rdptr & reg->tx_mask)) &&
 405                     ((card->txbd_wrptr & reg->tx_rollover_ind) !=
 406                      (rdptr & reg->tx_rollover_ind)))
 407                         return 1;
 408                 break;
 409         case PCIE_DEVICE_ID_MARVELL_88W8897:
 410         case PCIE_DEVICE_ID_MARVELL_88W8997:
 411                 if (((card->txbd_wrptr & reg->tx_mask) ==
 412                      (rdptr & reg->tx_mask)) &&
 413                     ((card->txbd_wrptr & reg->tx_rollover_ind) ==
 414                         (rdptr & reg->tx_rollover_ind)))
 415                         return 1;
 416                 break;
 417         }
 418
 419         return 0;
 420 }
 421
 422 static inline int
 423 mwifiex_pcie_txbd_not_full(struct pcie_service_card *card)
 424 {
 425         const struct mwifiex_pcie_card_reg *reg = card->pcie.reg;
 426
 427         switch (card->dev->device) {
 428         case PCIE_DEVICE_ID_MARVELL_88W8766P:
 429                 if (((card->txbd_wrptr & reg->tx_mask) !=
 430                      (card->txbd_rdptr & reg->tx_mask)) ||
 431                     ((card->txbd_wrptr & reg->tx_rollover_ind) !=
 432                      (card->txbd_rdptr & reg->tx_rollover_ind)))
 433                         return 1;
 434                 break;
 435         case PCIE_DEVICE_ID_MARVELL_88W8897:
 436         case PCIE_DEVICE_ID_MARVELL_88W8997:
 437                 if (((card->txbd_wrptr & reg->tx_mask) !=
 438                      (card->txbd_rdptr & reg->tx_mask)) ||
 439                     ((card->txbd_wrptr & reg->tx_rollover_ind) ==
 440                      (card->txbd_rdptr & reg->tx_rollover_ind)))
 441                         return 1;
 442                 break;
 443         }
 444
 445         return 0;
 446 }
 447
 448 #endif /* _MWIFIEX_PCIE_H */