drivers/net/wireless/mwifiex/sdio.h

   1 /*
   2  * Marvell Wireless LAN device driver: SDIO specific definitions
   3  *
   4  * Copyright (C) 2011, Marvell International Ltd.
   5  *
   6  * This software file (the "File") is distributed by Marvell International
   7  * Ltd. 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 #ifndef _MWIFIEX_SDIO_H
  21 #define _MWIFIEX_SDIO_H
  22
  23
  24 #include <linux/mmc/sdio.h>
  25 #include <linux/mmc/sdio_ids.h>
  26 #include <linux/mmc/sdio_func.h>
  27 #include <linux/mmc/card.h>
  28
  29 #include "main.h"
  30
  31 #define BLOCK_MODE      1
  32 #define BYTE_MODE       0
  33
  34 #define REG_PORT                        0
  35 #define RD_BITMAP_L                     0x04
  36 #define RD_BITMAP_U                     0x05
  37 #define WR_BITMAP_L                     0x06
  38 #define WR_BITMAP_U                     0x07
  39 #define RD_LEN_P0_L                     0x08
  40 #define RD_LEN_P0_U                     0x09
  41
  42 #define MWIFIEX_SDIO_IO_PORT_MASK               0xfffff
  43
  44 #define MWIFIEX_SDIO_BYTE_MODE_MASK     0x80000000
  45
  46 #define CTRL_PORT                       0
  47 #define CTRL_PORT_MASK                  0x0001
  48 #define DATA_PORT_MASK                  0xfffe
  49
  50 #define MAX_MP_REGS                     64
  51 #define MAX_PORT                        16
  52
  53 #define SDIO_MP_AGGR_DEF_PKT_LIMIT      8
  54
  55 #define SDIO_MP_TX_AGGR_DEF_BUF_SIZE        (4096)      /* 4K */
  56
  57 /* Multi port RX aggregation buffer size */
  58 #define SDIO_MP_RX_AGGR_DEF_BUF_SIZE        (4096)      /* 4K */
  59
  60 /* Misc. Config Register : Auto Re-enable interrupts */
  61 #define AUTO_RE_ENABLE_INT              BIT(4)
  62
  63 /* Host Control Registers */
  64 /* Host Control Registers : I/O port 0 */
  65 #define IO_PORT_0_REG                   0x78
  66 /* Host Control Registers : I/O port 1 */
  67 #define IO_PORT_1_REG                   0x79
  68 /* Host Control Registers : I/O port 2 */
  69 #define IO_PORT_2_REG                   0x7A
  70
  71 /* Host Control Registers : Configuration */
  72 #define CONFIGURATION_REG               0x00
  73 /* Host Control Registers : Host without Command 53 finish host*/
  74 #define HOST_TO_CARD_EVENT       (0x1U << 3)
  75 /* Host Control Registers : Host without Command 53 finish host */
  76 #define HOST_WO_CMD53_FINISH_HOST       (0x1U << 2)
  77 /* Host Control Registers : Host power up */
  78 #define HOST_POWER_UP                   (0x1U << 1)
  79 /* Host Control Registers : Host power down */
  80 #define HOST_POWER_DOWN                 (0x1U << 0)
  81
  82 /* Host Control Registers : Host interrupt mask */
  83 #define HOST_INT_MASK_REG               0x02
  84 /* Host Control Registers : Upload host interrupt mask */
  85 #define UP_LD_HOST_INT_MASK             (0x1U)
  86 /* Host Control Registers : Download host interrupt mask */
  87 #define DN_LD_HOST_INT_MASK             (0x2U)
  88 /* Enable Host interrupt mask */
  89 #define HOST_INT_ENABLE (UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK)
  90 /* Disable Host interrupt mask */
  91 #define HOST_INT_DISABLE                0xff
  92
  93 /* Host Control Registers : Host interrupt status */
  94 #define HOST_INTSTATUS_REG              0x03
  95 /* Host Control Registers : Upload host interrupt status */
  96 #define UP_LD_HOST_INT_STATUS           (0x1U)
  97 /* Host Control Registers : Download host interrupt status */
  98 #define DN_LD_HOST_INT_STATUS           (0x2U)
  99
 100 /* Host Control Registers : Host interrupt RSR */
 101 #define HOST_INT_RSR_REG                0x01
 102 /* Host Control Registers : Upload host interrupt RSR */
 103 #define UP_LD_HOST_INT_RSR              (0x1U)
 104 #define SDIO_INT_MASK                   0x3F
 105
 106 /* Host Control Registers : Host interrupt status */
 107 #define HOST_INT_STATUS_REG             0x28
 108 /* Host Control Registers : Upload CRC error */
 109 #define UP_LD_CRC_ERR                   (0x1U << 2)
 110 /* Host Control Registers : Upload restart */
 111 #define UP_LD_RESTART                   (0x1U << 1)
 112 /* Host Control Registers : Download restart */
 113 #define DN_LD_RESTART                   (0x1U << 0)
 114
 115 /* Card Control Registers : Card status register */
 116 #define CARD_STATUS_REG                 0x30
 117 /* Card Control Registers : Card I/O ready */
 118 #define CARD_IO_READY                   (0x1U << 3)
 119 /* Card Control Registers : CIS card ready */
 120 #define CIS_CARD_RDY                    (0x1U << 2)
 121 /* Card Control Registers : Upload card ready */
 122 #define UP_LD_CARD_RDY                  (0x1U << 1)
 123 /* Card Control Registers : Download card ready */
 124 #define DN_LD_CARD_RDY                  (0x1U << 0)
 125
 126 /* Card Control Registers : Host interrupt mask register */
 127 #define HOST_INTERRUPT_MASK_REG         0x34
 128 /* Card Control Registers : Host power interrupt mask */
 129 #define HOST_POWER_INT_MASK             (0x1U << 3)
 130 /* Card Control Registers : Abort card interrupt mask */
 131 #define ABORT_CARD_INT_MASK             (0x1U << 2)
 132 /* Card Control Registers : Upload card interrupt mask */
 133 #define UP_LD_CARD_INT_MASK             (0x1U << 1)
 134 /* Card Control Registers : Download card interrupt mask */
 135 #define DN_LD_CARD_INT_MASK             (0x1U << 0)
 136
 137 /* Card Control Registers : Card interrupt status register */
 138 #define CARD_INTERRUPT_STATUS_REG       0x38
 139 /* Card Control Registers : Power up interrupt */
 140 #define POWER_UP_INT                    (0x1U << 4)
 141 /* Card Control Registers : Power down interrupt */
 142 #define POWER_DOWN_INT                  (0x1U << 3)
 143
 144 /* Card Control Registers : Card interrupt RSR register */
 145 #define CARD_INTERRUPT_RSR_REG          0x3c
 146 /* Card Control Registers : Power up RSR */
 147 #define POWER_UP_RSR                    (0x1U << 4)
 148 /* Card Control Registers : Power down RSR */
 149 #define POWER_DOWN_RSR                  (0x1U << 3)
 150
 151 /* Card Control Registers : Miscellaneous Configuration Register */
 152 #define CARD_MISC_CFG_REG               0x6C
 153
 154 /* Host F1 read base 0 */
 155 #define HOST_F1_RD_BASE_0               0x0040
 156 /* Host F1 read base 1 */
 157 #define HOST_F1_RD_BASE_1               0x0041
 158 /* Host F1 card ready */
 159 #define HOST_F1_CARD_RDY                0x0020
 160
 161 /* Firmware status 0 register */
 162 #define CARD_FW_STATUS0_REG             0x60
 163 /* Firmware status 1 register */
 164 #define CARD_FW_STATUS1_REG             0x61
 165 /* Rx length register */
 166 #define CARD_RX_LEN_REG                 0x62
 167 /* Rx unit register */
 168 #define CARD_RX_UNIT_REG                0x63
 169
 170 /* Event header Len*/
 171 #define MWIFIEX_EVENT_HEADER_LEN           8
 172
 173 /* Max retry number of CMD53 write */
 174 #define MAX_WRITE_IOMEM_RETRY           2
 175
 176 /* SDIO Tx aggregation in progress ? */
 177 #define MP_TX_AGGR_IN_PROGRESS(a) (a->mpa_tx.pkt_cnt > 0)
 178
 179 /* SDIO Tx aggregation buffer room for next packet ? */
 180 #define MP_TX_AGGR_BUF_HAS_ROOM(a, len) ((a->mpa_tx.buf_len+len)        \
 181                                                 <= a->mpa_tx.buf_size)
 182
 183 /* Copy current packet (SDIO Tx aggregation buffer) to SDIO buffer */
 184 #define MP_TX_AGGR_BUF_PUT(a, payload, pkt_len, port) do {              \
 185         memmove(&a->mpa_tx.buf[a->mpa_tx.buf_len],                      \
 186                         payload, pkt_len);                              \
 187         a->mpa_tx.buf_len += pkt_len;                                   \
 188         if (!a->mpa_tx.pkt_cnt)                                         \
 189                 a->mpa_tx.start_port = port;                            \
 190         if (a->mpa_tx.start_port <= port)                               \
 191                 a->mpa_tx.ports |= (1<<(a->mpa_tx.pkt_cnt));            \
 192         else                                                            \
 193                 a->mpa_tx.ports |= (1<<(a->mpa_tx.pkt_cnt+1+(MAX_PORT - \
 194                                                 a->mp_end_port)));      \
 195         a->mpa_tx.pkt_cnt++;                                            \
 196 } while (0);
 197
 198 /* SDIO Tx aggregation limit ? */
 199 #define MP_TX_AGGR_PKT_LIMIT_REACHED(a)                                 \
 200                         (a->mpa_tx.pkt_cnt == a->mpa_tx.pkt_aggr_limit)
 201
 202 /* SDIO Tx aggregation port limit ? */
 203 #define MP_TX_AGGR_PORT_LIMIT_REACHED(a) ((a->curr_wr_port <            \
 204                         a->mpa_tx.start_port) && (((MAX_PORT -          \
 205                         a->mpa_tx.start_port) + a->curr_wr_port) >=     \
 206                                 SDIO_MP_AGGR_DEF_PKT_LIMIT))
 207
 208 /* Reset SDIO Tx aggregation buffer parameters */
 209 #define MP_TX_AGGR_BUF_RESET(a) do {                                    \
 210         a->mpa_tx.pkt_cnt = 0;                                          \
 211         a->mpa_tx.buf_len = 0;                                          \
 212         a->mpa_tx.ports = 0;                                            \
 213         a->mpa_tx.start_port = 0;                                       \
 214 } while (0);
 215
 216 /* SDIO Rx aggregation limit ? */
 217 #define MP_RX_AGGR_PKT_LIMIT_REACHED(a)                                 \
 218                         (a->mpa_rx.pkt_cnt == a->mpa_rx.pkt_aggr_limit)
 219
 220 /* SDIO Tx aggregation port limit ? */
 221 #define MP_RX_AGGR_PORT_LIMIT_REACHED(a) ((a->curr_rd_port <            \
 222                         a->mpa_rx.start_port) && (((MAX_PORT -          \
 223                         a->mpa_rx.start_port) + a->curr_rd_port) >=     \
 224                         SDIO_MP_AGGR_DEF_PKT_LIMIT))
 225
 226 /* SDIO Rx aggregation in progress ? */
 227 #define MP_RX_AGGR_IN_PROGRESS(a) (a->mpa_rx.pkt_cnt > 0)
 228
 229 /* SDIO Rx aggregation buffer room for next packet ? */
 230 #define MP_RX_AGGR_BUF_HAS_ROOM(a, rx_len)                              \
 231                         ((a->mpa_rx.buf_len+rx_len) <= a->mpa_rx.buf_size)
 232
 233 /* Prepare to copy current packet from card to SDIO Rx aggregation buffer */
 234 #define MP_RX_AGGR_SETUP(a, skb, port) do {                             \
 235         a->mpa_rx.buf_len += skb->len;                                  \
 236         if (!a->mpa_rx.pkt_cnt)                                         \
 237                 a->mpa_rx.start_port = port;                            \
 238         if (a->mpa_rx.start_port <= port)                               \
 239                 a->mpa_rx.ports |= (1<<(a->mpa_rx.pkt_cnt));            \
 240         else                                                            \
 241                 a->mpa_rx.ports |= (1<<(a->mpa_rx.pkt_cnt+1));          \
 242         a->mpa_rx.skb_arr[a->mpa_rx.pkt_cnt] = skb;                     \
 243         a->mpa_rx.len_arr[a->mpa_rx.pkt_cnt] = skb->len;                \
 244         a->mpa_rx.pkt_cnt++;                                            \
 245 } while (0);
 246
 247 /* Reset SDIO Rx aggregation buffer parameters */
 248 #define MP_RX_AGGR_BUF_RESET(a) do {                                    \
 249         a->mpa_rx.pkt_cnt = 0;                                          \
 250         a->mpa_rx.buf_len = 0;                                          \
 251         a->mpa_rx.ports = 0;                                            \
 252         a->mpa_rx.start_port = 0;                                       \
 253 } while (0);
 254
 255
 256 /* data structure for SDIO MPA TX */
 257 struct mwifiex_sdio_mpa_tx {
 258         /* multiport tx aggregation buffer pointer */
 259         u8 *buf;
 260         u32 buf_len;
 261         u32 pkt_cnt;
 262         u16 ports;
 263         u16 start_port;
 264         u8 enabled;
 265         u32 buf_size;
 266         u32 pkt_aggr_limit;
 267 };
 268
 269 struct mwifiex_sdio_mpa_rx {
 270         u8 *buf;
 271         u32 buf_len;
 272         u32 pkt_cnt;
 273         u16 ports;
 274         u16 start_port;
 275
 276         struct sk_buff *skb_arr[SDIO_MP_AGGR_DEF_PKT_LIMIT];
 277         u32 len_arr[SDIO_MP_AGGR_DEF_PKT_LIMIT];
 278
 279         u8 enabled;
 280         u32 buf_size;
 281         u32 pkt_aggr_limit;
 282 };
 283
 284 int mwifiex_bus_register(void);
 285 void mwifiex_bus_unregister(void);
 286
 287 struct sdio_mmc_card {
 288         struct sdio_func *func;
 289         struct mwifiex_adapter *adapter;
 290
 291         u16 mp_rd_bitmap;
 292         u16 mp_wr_bitmap;
 293
 294         u16 mp_end_port;
 295         u16 mp_data_port_mask;
 296
 297         u8 curr_rd_port;
 298         u8 curr_wr_port;
 299
 300         u8 *mp_regs;
 301
 302         struct mwifiex_sdio_mpa_tx mpa_tx;
 303         struct mwifiex_sdio_mpa_rx mpa_rx;
 304 };
 305 #endif /* _MWIFIEX_SDIO_H */