drivers/net/wireless/intersil/p54/p54spi.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2008 Christian Lamparter <chunkeey@web.de>
   4  *
   5  * This driver is a port from stlc45xx:
   6  *      Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
   7  */
   8
   9 #ifndef P54SPI_H
  10 #define P54SPI_H
  11
  12 #include <linux/mutex.h>
  13 #include <linux/list.h>
  14 #include <net/mac80211.h>
  15
  16 #include "p54.h"
  17
  18 /* Bit 15 is read/write bit; ON = READ, OFF = WRITE */
  19 #define SPI_ADRS_READ_BIT_15            0x8000
  20
  21 #define SPI_ADRS_ARM_INTERRUPTS         0x00
  22 #define SPI_ADRS_ARM_INT_EN             0x04
  23
  24 #define SPI_ADRS_HOST_INTERRUPTS        0x08
  25 #define SPI_ADRS_HOST_INT_EN            0x0c
  26 #define SPI_ADRS_HOST_INT_ACK           0x10
  27
  28 #define SPI_ADRS_GEN_PURP_1             0x14
  29 #define SPI_ADRS_GEN_PURP_2             0x18
  30
  31 #define SPI_ADRS_DEV_CTRL_STAT          0x26    /* high word */
  32
  33 #define SPI_ADRS_DMA_DATA               0x28
  34
  35 #define SPI_ADRS_DMA_WRITE_CTRL         0x2c
  36 #define SPI_ADRS_DMA_WRITE_LEN          0x2e
  37 #define SPI_ADRS_DMA_WRITE_BASE         0x30
  38
  39 #define SPI_ADRS_DMA_READ_CTRL          0x34
  40 #define SPI_ADRS_DMA_READ_LEN           0x36
  41 #define SPI_ADRS_DMA_READ_BASE          0x38
  42
  43 #define SPI_CTRL_STAT_HOST_OVERRIDE     0x8000
  44 #define SPI_CTRL_STAT_START_HALTED      0x4000
  45 #define SPI_CTRL_STAT_RAM_BOOT          0x2000
  46 #define SPI_CTRL_STAT_HOST_RESET        0x1000
  47 #define SPI_CTRL_STAT_HOST_CPU_EN       0x0800
  48
  49 #define SPI_DMA_WRITE_CTRL_ENABLE       0x0001
  50 #define SPI_DMA_READ_CTRL_ENABLE        0x0001
  51 #define HOST_ALLOWED                    (1 << 7)
  52
  53 #define SPI_TIMEOUT                     100         /* msec */
  54
  55 #define SPI_MAX_TX_PACKETS              32
  56
  57 #define SPI_MAX_PACKET_SIZE             32767
  58
  59 #define SPI_TARGET_INT_WAKEUP           0x00000001
  60 #define SPI_TARGET_INT_SLEEP            0x00000002
  61 #define SPI_TARGET_INT_RDDONE           0x00000004
  62
  63 #define SPI_TARGET_INT_CTS              0x00004000
  64 #define SPI_TARGET_INT_DR               0x00008000
  65
  66 #define SPI_HOST_INT_READY              0x00000001
  67 #define SPI_HOST_INT_WR_READY           0x00000002
  68 #define SPI_HOST_INT_SW_UPDATE          0x00000004
  69 #define SPI_HOST_INT_UPDATE             0x10000000
  70
  71 /* clear to send */
  72 #define SPI_HOST_INT_CR                 0x00004000
  73
  74 /* data ready */
  75 #define SPI_HOST_INT_DR                 0x00008000
  76
  77 #define SPI_HOST_INTS_DEFAULT                                               \
  78         (SPI_HOST_INT_READY | SPI_HOST_INT_UPDATE | SPI_HOST_INT_SW_UPDATE)
  79
  80 #define TARGET_BOOT_SLEEP 50
  81
  82 struct p54s_dma_regs {
  83         __le16 cmd;
  84         __le16 len;
  85         __le32 addr;
  86 } __packed;
  87
  88 struct p54s_tx_info {
  89         struct list_head tx_list;
  90 };
  91
  92 struct p54s_priv {
  93         /* p54_common has to be the first entry */
  94         struct p54_common common;
  95         struct ieee80211_hw *hw;
  96         struct spi_device *spi;
  97
  98         struct work_struct work;
  99
 100         struct mutex mutex;
 101         struct completion fw_comp;
 102
 103         spinlock_t tx_lock;
 104
 105         /* protected by tx_lock */
 106         struct list_head tx_pending;
 107
 108         enum fw_state fw_state;
 109         const struct firmware *firmware;
 110 };
 111
 112 #endif /* P54SPI_H */