drivers/net/wireless/p54/p54spi.h

   1 /*
   2  * Copyright (C) 2008 Christian Lamparter <chunkeey@web.de>
   3  *
   4  * This driver is a port from stlc45xx:
   5  *      Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * version 2 as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  19  * 02110-1301 USA
  20  */
  21
  22 #ifndef P54SPI_H
  23 #define P54SPI_H
  24
  25 #include <linux/mutex.h>
  26 #include <linux/list.h>
  27 #include <net/mac80211.h>
  28
  29 #include "p54.h"
  30
  31 /* Bit 15 is read/write bit; ON = READ, OFF = WRITE */
  32 #define SPI_ADRS_READ_BIT_15            0x8000
  33
  34 #define SPI_ADRS_ARM_INTERRUPTS         0x00
  35 #define SPI_ADRS_ARM_INT_EN             0x04
  36
  37 #define SPI_ADRS_HOST_INTERRUPTS        0x08
  38 #define SPI_ADRS_HOST_INT_EN            0x0c
  39 #define SPI_ADRS_HOST_INT_ACK           0x10
  40
  41 #define SPI_ADRS_GEN_PURP_1             0x14
  42 #define SPI_ADRS_GEN_PURP_2             0x18
  43
  44 #define SPI_ADRS_DEV_CTRL_STAT          0x26    /* high word */
  45
  46 #define SPI_ADRS_DMA_DATA               0x28
  47
  48 #define SPI_ADRS_DMA_WRITE_CTRL         0x2c
  49 #define SPI_ADRS_DMA_WRITE_LEN          0x2e
  50 #define SPI_ADRS_DMA_WRITE_BASE         0x30
  51
  52 #define SPI_ADRS_DMA_READ_CTRL          0x34
  53 #define SPI_ADRS_DMA_READ_LEN           0x36
  54 #define SPI_ADRS_DMA_READ_BASE          0x38
  55
  56 #define SPI_CTRL_STAT_HOST_OVERRIDE     0x8000
  57 #define SPI_CTRL_STAT_START_HALTED      0x4000
  58 #define SPI_CTRL_STAT_RAM_BOOT          0x2000
  59 #define SPI_CTRL_STAT_HOST_RESET        0x1000
  60 #define SPI_CTRL_STAT_HOST_CPU_EN       0x0800
  61
  62 #define SPI_DMA_WRITE_CTRL_ENABLE       0x0001
  63 #define SPI_DMA_READ_CTRL_ENABLE        0x0001
  64 #define HOST_ALLOWED                    (1 << 7)
  65
  66 #define SPI_TIMEOUT                     100         /* msec */
  67
  68 #define SPI_MAX_TX_PACKETS              32
  69
  70 #define SPI_MAX_PACKET_SIZE             32767
  71
  72 #define SPI_TARGET_INT_WAKEUP           0x00000001
  73 #define SPI_TARGET_INT_SLEEP            0x00000002
  74 #define SPI_TARGET_INT_RDDONE           0x00000004
  75
  76 #define SPI_TARGET_INT_CTS              0x00004000
  77 #define SPI_TARGET_INT_DR               0x00008000
  78
  79 #define SPI_HOST_INT_READY              0x00000001
  80 #define SPI_HOST_INT_WR_READY           0x00000002
  81 #define SPI_HOST_INT_SW_UPDATE          0x00000004
  82 #define SPI_HOST_INT_UPDATE             0x10000000
  83
  84 /* clear to send */
  85 #define SPI_HOST_INT_CR                 0x00004000
  86
  87 /* data ready */
  88 #define SPI_HOST_INT_DR                 0x00008000
  89
  90 #define SPI_HOST_INTS_DEFAULT                                               \
  91         (SPI_HOST_INT_READY | SPI_HOST_INT_UPDATE | SPI_HOST_INT_SW_UPDATE)
  92
  93 #define TARGET_BOOT_SLEEP 50
  94
  95 struct p54s_dma_regs {
  96         __le16 cmd;
  97         __le16 len;
  98         __le32 addr;
  99 } __packed;
 100
 101 struct p54s_tx_info {
 102         struct list_head tx_list;
 103 };
 104
 105 struct p54s_priv {
 106         /* p54_common has to be the first entry */
 107         struct p54_common common;
 108         struct ieee80211_hw *hw;
 109         struct spi_device *spi;
 110
 111         struct work_struct work;
 112
 113         struct mutex mutex;
 114         struct completion fw_comp;
 115
 116         spinlock_t tx_lock;
 117
 118         /* protected by tx_lock */
 119         struct list_head tx_pending;
 120
 121         enum fw_state fw_state;
 122         const struct firmware *firmware;
 123 };
 124
 125 #endif /* P54SPI_H */