1/* 2 * linux/drivers/net/wireless/libertas/if_spi.c 3 * 4 * Driver for Marvell SPI WLAN cards. 5 * 6 * Copyright 2008 Analog Devices Inc. 7 * 8 * Authors: 9 * Andrey Yurovsky <andrey@cozybit.com> 10 * Colin McCabe <colin@cozybit.com> 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or (at 15 * your option) any later version. 16 */ 17 18#ifndef _LBS_IF_SPI_H_ 19#define _LBS_IF_SPI_H_ 20 21#define IPFIELD_ALIGN_OFFSET 2 22#define IF_SPI_CMD_BUF_SIZE 2400 23 24/***************** Firmware *****************/ 25 26#define IF_SPI_FW_NAME_MAX 30 27 28#define MAX_MAIN_FW_LOAD_CRC_ERR 10 29 30/* Chunk size when loading the helper firmware */ 31#define HELPER_FW_LOAD_CHUNK_SZ 64 32 33/* Value to write to indicate end of helper firmware dnld */ 34#define FIRMWARE_DNLD_OK 0x0000 35 36/* Value to check once the main firmware is downloaded */ 37#define SUCCESSFUL_FW_DOWNLOAD_MAGIC 0x88888888 38 39/***************** SPI Interface Unit *****************/ 40/* Masks used in SPI register read/write operations */ 41#define IF_SPI_READ_OPERATION_MASK 0x0 42#define IF_SPI_WRITE_OPERATION_MASK 0x8000 43 44/* SPI register offsets. 4-byte aligned. */ 45#define IF_SPI_DEVICEID_CTRL_REG 0x00 /* DeviceID controller reg */ 46#define IF_SPI_IO_READBASE_REG 0x04 /* Read I/O base reg */ 47#define IF_SPI_IO_WRITEBASE_REG 0x08 /* Write I/O base reg */ 48#define IF_SPI_IO_RDWRPORT_REG 0x0C /* Read/Write I/O port reg */ 49 50#define IF_SPI_CMD_READBASE_REG 0x10 /* Read command base reg */ 51#define IF_SPI_CMD_WRITEBASE_REG 0x14 /* Write command base reg */ 52#define IF_SPI_CMD_RDWRPORT_REG 0x18 /* Read/Write command port reg */ 53 54#define IF_SPI_DATA_READBASE_REG 0x1C /* Read data base reg */ 55#define IF_SPI_DATA_WRITEBASE_REG 0x20 /* Write data base reg */ 56#define IF_SPI_DATA_RDWRPORT_REG 0x24 /* Read/Write data port reg */ 57 58#define IF_SPI_SCRATCH_1_REG 0x28 /* Scratch reg 1 */ 59#define IF_SPI_SCRATCH_2_REG 0x2C /* Scratch reg 2 */ 60#define IF_SPI_SCRATCH_3_REG 0x30 /* Scratch reg 3 */ 61#define IF_SPI_SCRATCH_4_REG 0x34 /* Scratch reg 4 */ 62 63#define IF_SPI_TX_FRAME_SEQ_NUM_REG 0x38 /* Tx frame sequence number reg */ 64#define IF_SPI_TX_FRAME_STATUS_REG 0x3C /* Tx frame status reg */ 65 66#define IF_SPI_HOST_INT_CTRL_REG 0x40 /* Host interrupt controller reg */ 67 68#define IF_SPI_CARD_INT_CAUSE_REG 0x44 /* Card interrupt cause reg */ 69#define IF_SPI_CARD_INT_STATUS_REG 0x48 /* Card interrupt status reg */ 70#define IF_SPI_CARD_INT_EVENT_MASK_REG 0x4C /* Card interrupt event mask */ 71#define IF_SPI_CARD_INT_STATUS_MASK_REG 0x50 /* Card interrupt status mask */ 72 73#define IF_SPI_CARD_INT_RESET_SELECT_REG 0x54 /* Card interrupt reset select */ 74 75#define IF_SPI_HOST_INT_CAUSE_REG 0x58 /* Host interrupt cause reg */ 76#define IF_SPI_HOST_INT_STATUS_REG 0x5C /* Host interrupt status reg */ 77#define IF_SPI_HOST_INT_EVENT_MASK_REG 0x60 /* Host interrupt event mask */ 78#define IF_SPI_HOST_INT_STATUS_MASK_REG 0x64 /* Host interrupt status mask */ 79#define IF_SPI_HOST_INT_RESET_SELECT_REG 0x68 /* Host interrupt reset select */ 80 81#define IF_SPI_DELAY_READ_REG 0x6C /* Delay read reg */ 82#define IF_SPI_SPU_BUS_MODE_REG 0x70 /* SPU BUS mode reg */ 83 84/***************** IF_SPI_DEVICEID_CTRL_REG *****************/ 85#define IF_SPI_DEVICEID_CTRL_REG_TO_CARD_ID(dc) ((dc & 0xffff0000)>>16) 86#define IF_SPI_DEVICEID_CTRL_REG_TO_CARD_REV(dc) (dc & 0x000000ff) 87 88/***************** IF_SPI_HOST_INT_CTRL_REG *****************/ 89/* Host Interrupt Control bit : Wake up */ 90#define IF_SPI_HICT_WAKE_UP (1<<0) 91/* Host Interrupt Control bit : WLAN ready */ 92#define IF_SPI_HICT_WLAN_READY (1<<1) 93/*#define IF_SPI_HICT_FIFO_FIRST_HALF_EMPTY (1<<2) */ 94/*#define IF_SPI_HICT_FIFO_SECOND_HALF_EMPTY (1<<3) */ 95/*#define IF_SPI_HICT_IRQSRC_WLAN (1<<4) */ 96/* Host Interrupt Control bit : Tx auto download */ 97#define IF_SPI_HICT_TX_DOWNLOAD_OVER_AUTO (1<<5) 98/* Host Interrupt Control bit : Rx auto upload */ 99#define IF_SPI_HICT_RX_UPLOAD_OVER_AUTO (1<<6) 100/* Host Interrupt Control bit : Command auto download */ 101#define IF_SPI_HICT_CMD_DOWNLOAD_OVER_AUTO (1<<7) 102/* Host Interrupt Control bit : Command auto upload */ 103#define IF_SPI_HICT_CMD_UPLOAD_OVER_AUTO (1<<8) 104 105/***************** IF_SPI_CARD_INT_CAUSE_REG *****************/ 106/* Card Interrupt Case bit : Tx download over */ 107#define IF_SPI_CIC_TX_DOWNLOAD_OVER (1<<0) 108/* Card Interrupt Case bit : Rx upload over */ 109#define IF_SPI_CIC_RX_UPLOAD_OVER (1<<1) 110/* Card Interrupt Case bit : Command download over */ 111#define IF_SPI_CIC_CMD_DOWNLOAD_OVER (1<<2) 112/* Card Interrupt Case bit : Host event */ 113#define IF_SPI_CIC_HOST_EVENT (1<<3) 114/* Card Interrupt Case bit : Command upload over */ 115#define IF_SPI_CIC_CMD_UPLOAD_OVER (1<<4) 116/* Card Interrupt Case bit : Power down */ 117#define IF_SPI_CIC_POWER_DOWN (1<<5) 118 119/***************** IF_SPI_CARD_INT_STATUS_REG *****************/ 120#define IF_SPI_CIS_TX_DOWNLOAD_OVER (1<<0) 121#define IF_SPI_CIS_RX_UPLOAD_OVER (1<<1) 122#define IF_SPI_CIS_CMD_DOWNLOAD_OVER (1<<2) 123#define IF_SPI_CIS_HOST_EVENT (1<<3) 124#define IF_SPI_CIS_CMD_UPLOAD_OVER (1<<4) 125#define IF_SPI_CIS_POWER_DOWN (1<<5) 126 127/***************** IF_SPI_HOST_INT_CAUSE_REG *****************/ 128#define IF_SPI_HICU_TX_DOWNLOAD_RDY (1<<0) 129#define IF_SPI_HICU_RX_UPLOAD_RDY (1<<1) 130#define IF_SPI_HICU_CMD_DOWNLOAD_RDY (1<<2) 131#define IF_SPI_HICU_CARD_EVENT (1<<3) 132#define IF_SPI_HICU_CMD_UPLOAD_RDY (1<<4) 133#define IF_SPI_HICU_IO_WR_FIFO_OVERFLOW (1<<5) 134#define IF_SPI_HICU_IO_RD_FIFO_UNDERFLOW (1<<6) 135#define IF_SPI_HICU_DATA_WR_FIFO_OVERFLOW (1<<7) 136#define IF_SPI_HICU_DATA_RD_FIFO_UNDERFLOW (1<<8) 137#define IF_SPI_HICU_CMD_WR_FIFO_OVERFLOW (1<<9) 138#define IF_SPI_HICU_CMD_RD_FIFO_UNDERFLOW (1<<10) 139 140/***************** IF_SPI_HOST_INT_STATUS_REG *****************/ 141/* Host Interrupt Status bit : Tx download ready */ 142#define IF_SPI_HIST_TX_DOWNLOAD_RDY (1<<0) 143/* Host Interrupt Status bit : Rx upload ready */ 144#define IF_SPI_HIST_RX_UPLOAD_RDY (1<<1) 145/* Host Interrupt Status bit : Command download ready */ 146#define IF_SPI_HIST_CMD_DOWNLOAD_RDY (1<<2) 147/* Host Interrupt Status bit : Card event */ 148#define IF_SPI_HIST_CARD_EVENT (1<<3) 149/* Host Interrupt Status bit : Command upload ready */ 150#define IF_SPI_HIST_CMD_UPLOAD_RDY (1<<4) 151/* Host Interrupt Status bit : I/O write FIFO overflow */ 152#define IF_SPI_HIST_IO_WR_FIFO_OVERFLOW (1<<5) 153/* Host Interrupt Status bit : I/O read FIFO underflow */ 154#define IF_SPI_HIST_IO_RD_FIFO_UNDRFLOW (1<<6) 155/* Host Interrupt Status bit : Data write FIFO overflow */ 156#define IF_SPI_HIST_DATA_WR_FIFO_OVERFLOW (1<<7) 157/* Host Interrupt Status bit : Data read FIFO underflow */ 158#define IF_SPI_HIST_DATA_RD_FIFO_UNDERFLOW (1<<8) 159/* Host Interrupt Status bit : Command write FIFO overflow */ 160#define IF_SPI_HIST_CMD_WR_FIFO_OVERFLOW (1<<9) 161/* Host Interrupt Status bit : Command read FIFO underflow */ 162#define IF_SPI_HIST_CMD_RD_FIFO_UNDERFLOW (1<<10) 163 164/***************** IF_SPI_HOST_INT_STATUS_MASK_REG *****************/ 165/* Host Interrupt Status Mask bit : Tx download ready */ 166#define IF_SPI_HISM_TX_DOWNLOAD_RDY (1<<0) 167/* Host Interrupt Status Mask bit : Rx upload ready */ 168#define IF_SPI_HISM_RX_UPLOAD_RDY (1<<1) 169/* Host Interrupt Status Mask bit : Command download ready */ 170#define IF_SPI_HISM_CMD_DOWNLOAD_RDY (1<<2) 171/* Host Interrupt Status Mask bit : Card event */ 172#define IF_SPI_HISM_CARDEVENT (1<<3) 173/* Host Interrupt Status Mask bit : Command upload ready */ 174#define IF_SPI_HISM_CMD_UPLOAD_RDY (1<<4) 175/* Host Interrupt Status Mask bit : I/O write FIFO overflow */ 176#define IF_SPI_HISM_IO_WR_FIFO_OVERFLOW (1<<5) 177/* Host Interrupt Status Mask bit : I/O read FIFO underflow */ 178#define IF_SPI_HISM_IO_RD_FIFO_UNDERFLOW (1<<6) 179/* Host Interrupt Status Mask bit : Data write FIFO overflow */ 180#define IF_SPI_HISM_DATA_WR_FIFO_OVERFLOW (1<<7) 181/* Host Interrupt Status Mask bit : Data write FIFO underflow */ 182#define IF_SPI_HISM_DATA_RD_FIFO_UNDERFLOW (1<<8) 183/* Host Interrupt Status Mask bit : Command write FIFO overflow */ 184#define IF_SPI_HISM_CMD_WR_FIFO_OVERFLOW (1<<9) 185/* Host Interrupt Status Mask bit : Command write FIFO underflow */ 186#define IF_SPI_HISM_CMD_RD_FIFO_UNDERFLOW (1<<10) 187 188/***************** IF_SPI_SPU_BUS_MODE_REG *****************/ 189/* SCK edge on which the WLAN module outputs data on MISO */ 190#define IF_SPI_BUS_MODE_SPI_CLOCK_PHASE_FALLING 0x8 191#define IF_SPI_BUS_MODE_SPI_CLOCK_PHASE_RISING 0x0 192 193/* In a SPU read operation, there is a delay between writing the SPU 194 * register name and getting back data from the WLAN module. 195 * This can be specified in terms of nanoseconds or in terms of dummy 196 * clock cycles which the master must output before receiving a response. */ 197#define IF_SPI_BUS_MODE_DELAY_METHOD_DUMMY_CLOCK 0x4 198#define IF_SPI_BUS_MODE_DELAY_METHOD_TIMED 0x0 199 200/* Some different modes of SPI operation */ 201#define IF_SPI_BUS_MODE_8_BIT_ADDRESS_16_BIT_DATA 0x00 202#define IF_SPI_BUS_MODE_8_BIT_ADDRESS_32_BIT_DATA 0x01 203#define IF_SPI_BUS_MODE_16_BIT_ADDRESS_16_BIT_DATA 0x02 204#define IF_SPI_BUS_MODE_16_BIT_ADDRESS_32_BIT_DATA 0x03 205 206#endif 207