drivers/net/wireless/rsi/rsi_sdio.h

   1 /**
   2  * @section LICENSE
   3  * Copyright (c) 2014 Redpine Signals Inc.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  *
  17  */
  18
  19 #ifndef __RSI_SDIO_INTF__
  20 #define __RSI_SDIO_INTF__
  21
  22 #include <linux/mmc/card.h>
  23 #include <linux/mmc/mmc.h>
  24 #include <linux/mmc/host.h>
  25 #include <linux/mmc/sdio_func.h>
  26 #include <linux/mmc/sdio.h>
  27 #include <linux/mmc/sd.h>
  28 #include <linux/mmc/sdio_ids.h>
  29 #include "rsi_main.h"
  30
  31 enum sdio_interrupt_type {
  32         BUFFER_FULL         = 0x0,
  33         BUFFER_AVAILABLE    = 0x2,
  34         FIRMWARE_ASSERT_IND = 0x3,
  35         MSDU_PACKET_PENDING = 0x4,
  36         UNKNOWN_INT         = 0XE
  37 };
  38
  39 /* Buffer status register related info */
  40 #define PKT_BUFF_SEMI_FULL                      0
  41 #define PKT_BUFF_FULL                           1
  42 #define PKT_MGMT_BUFF_FULL                      2
  43 #define MSDU_PKT_PENDING                        3
  44 #define RECV_NUM_BLOCKS                         4
  45 /* Interrupt Bit Related Macros */
  46 #define PKT_BUFF_AVAILABLE                      1
  47 #define FW_ASSERT_IND                           2
  48
  49 #define RSI_MASTER_REG_BUF_SIZE                 12
  50
  51 #define RSI_DEVICE_BUFFER_STATUS_REGISTER       0xf3
  52 #define RSI_FN1_INT_REGISTER                    0xf9
  53 #define RSI_INT_ENABLE_REGISTER                 0x04
  54 #define RSI_INT_ENABLE_MASK                     0xfc
  55 #define RSI_SD_REQUEST_MASTER                   0x10000
  56
  57 /* FOR SD CARD ONLY */
  58 #define SDIO_RX_NUM_BLOCKS_REG                  0x000F1
  59 #define SDIO_FW_STATUS_REG                      0x000F2
  60 #define SDIO_NXT_RD_DELAY2                      0x000F5
  61 #define SDIO_MASTER_ACCESS_MSBYTE               0x000FA
  62 #define SDIO_MASTER_ACCESS_LSBYTE               0x000FB
  63 #define SDIO_READ_START_LVL                     0x000FC
  64 #define SDIO_READ_FIFO_CTL                      0x000FD
  65 #define SDIO_WRITE_FIFO_CTL                     0x000FE
  66 #define SDIO_WAKEUP_REG                         0x000FF
  67 #define SDIO_FUN1_INTR_CLR_REG                  0x0008
  68 #define SDIO_REG_HIGH_SPEED                     0x0013
  69
  70 #define RSI_GET_SDIO_INTERRUPT_TYPE(_I, TYPE)      \
  71         {                                          \
  72                 TYPE =                             \
  73                 (_I & (1 << PKT_BUFF_AVAILABLE)) ? \
  74                 BUFFER_AVAILABLE :                 \
  75                 (_I & (1 << MSDU_PKT_PENDING)) ?   \
  76                 MSDU_PACKET_PENDING :              \
  77                 (_I & (1 << FW_ASSERT_IND)) ?      \
  78                 FIRMWARE_ASSERT_IND : UNKNOWN_INT; \
  79         }
  80
  81 /* common registers in SDIO function1 */
  82 #define TA_SOFT_RESET_REG            0x0004
  83 #define TA_TH0_PC_REG                0x0400
  84 #define TA_HOLD_THREAD_REG           0x0844
  85 #define TA_RELEASE_THREAD_REG        0x0848
  86
  87 #define TA_SOFT_RST_CLR              0
  88 #define TA_SOFT_RST_SET              BIT(0)
  89 #define TA_PC_ZERO                   0
  90 #define TA_HOLD_THREAD_VALUE         0xF
  91 #define TA_RELEASE_THREAD_VALUE      cpu_to_le32(0xF)
  92 #define TA_BASE_ADDR                 0x2200
  93 #define MISC_CFG_BASE_ADDR           0x4105
  94
  95 struct receive_info {
  96         bool buffer_full;
  97         bool semi_buffer_full;
  98         bool mgmt_buffer_full;
  99         u32 mgmt_buf_full_counter;
 100         u32 buf_semi_full_counter;
 101         u8 watch_bufferfull_count;
 102         u32 sdio_intr_status_zero;
 103         u32 sdio_int_counter;
 104         u32 total_sdio_msdu_pending_intr;
 105         u32 total_sdio_unknown_intr;
 106         u32 buf_full_counter;
 107         u32 buf_available_counter;
 108 };
 109
 110 struct rsi_sdio_rx_q {
 111         u8 num_rx_pkts;
 112         struct sk_buff_head head;
 113 };
 114
 115 struct rsi_91x_sdiodev {
 116         struct sdio_func *pfunction;
 117         struct task_struct *sdio_irq_task;
 118         struct receive_info rx_info;
 119         u32 next_read_delay;
 120         u32 sdio_high_speed_enable;
 121         u8 sdio_clock_speed;
 122         u32 cardcapability;
 123         u8 prev_desc[16];
 124         u16 tx_blk_size;
 125         u8 write_fail;
 126         bool buff_status_updated;
 127         struct rsi_sdio_rx_q rx_q;
 128         struct rsi_thread rx_thread;
 129 };
 130
 131 void rsi_interrupt_handler(struct rsi_hw *adapter);
 132 int rsi_init_sdio_slave_regs(struct rsi_hw *adapter);
 133 int rsi_sdio_read_register(struct rsi_hw *adapter, u32 addr, u8 *data);
 134 int rsi_sdio_host_intf_read_pkt(struct rsi_hw *adapter, u8 *pkt, u32 length);
 135 int rsi_sdio_write_register(struct rsi_hw *adapter, u8 function,
 136                             u32 addr, u8 *data);
 137 int rsi_sdio_write_register_multiple(struct rsi_hw *adapter, u32 addr,
 138                                      u8 *data, u16 count);
 139 int rsi_sdio_master_access_msword(struct rsi_hw *adapter, u16 ms_word);
 140 void rsi_sdio_ack_intr(struct rsi_hw *adapter, u8 int_bit);
 141 int rsi_sdio_determine_event_timeout(struct rsi_hw *adapter);
 142 int rsi_sdio_check_buffer_status(struct rsi_hw *adapter, u8 q_num);
 143 void rsi_sdio_rx_thread(struct rsi_common *common);
 144 #endif