drivers/net/irda/nsc-ircc.h

   1 /*********************************************************************
   2  *
   3  * Filename:      nsc-ircc.h
   4  * Version:
   5  * Description:
   6  * Status:        Experimental.
   7  * Author:        Dag Brattli <dagb@cs.uit.no>
   8  * Created at:    Fri Nov 13 14:37:40 1998
   9  * Modified at:   Sun Jan 23 17:47:00 2000
  10  * Modified by:   Dag Brattli <dagb@cs.uit.no>
  11  *
  12  *     Copyright (c) 1998-2000 Dag Brattli <dagb@cs.uit.no>
  13  *     Copyright (c) 1998 Lichen Wang, <lwang@actisys.com>
  14  *     Copyright (c) 1998 Actisys Corp., www.actisys.com
  15  *     All Rights Reserved
  16  *
  17  *     This program is free software; you can redistribute it and/or
  18  *     modify it under the terms of the GNU General Public License as
  19  *     published by the Free Software Foundation; either version 2 of
  20  *     the License, or (at your option) any later version.
  21  *
  22  *     Neither Dag Brattli nor University of Tromsø admit liability nor
  23  *     provide warranty for any of this software. This material is
  24  *     provided "AS-IS" and at no charge.
  25  *
  26  ********************************************************************/
  27
  28 #ifndef NSC_IRCC_H
  29 #define NSC_IRCC_H
  30
  31 #include <linux/time.h>
  32
  33 #include <linux/spinlock.h>
  34 #include <linux/pm.h>
  35 #include <linux/types.h>
  36 #include <asm/io.h>
  37
  38 /* DMA modes needed */
  39 #define DMA_TX_MODE     0x08    /* Mem to I/O, ++, demand. */
  40 #define DMA_RX_MODE     0x04    /* I/O to mem, ++, demand. */
  41
  42 /* Config registers for the '108 */
  43 #define CFG_108_BAIC 0x00
  44 #define CFG_108_CSRT 0x01
  45 #define CFG_108_MCTL 0x02
  46
  47 /* Config registers for the '338 */
  48 #define CFG_338_FER  0x00
  49 #define CFG_338_FAR  0x01
  50 #define CFG_338_PTR  0x02
  51 #define CFG_338_PNP0 0x1b
  52 #define CFG_338_PNP1 0x1c
  53 #define CFG_338_PNP3 0x4f
  54
  55 /* Config registers for the '39x (in the logical device bank) */
  56 #define CFG_39X_LDN     0x07    /* Logical device number (Super I/O bank) */
  57 #define CFG_39X_SIOCF1  0x21    /* SuperI/O Config */
  58 #define CFG_39X_ACT     0x30    /* Device activation */
  59 #define CFG_39X_BASEH   0x60    /* Device base address (high bits) */
  60 #define CFG_39X_BASEL   0x61    /* Device base address (low bits) */
  61 #define CFG_39X_IRQNUM  0x70    /* Interrupt number & wake up enable */
  62 #define CFG_39X_IRQSEL  0x71    /* Interrupt select (edge/level + polarity) */
  63 #define CFG_39X_DMA0    0x74    /* DMA 0 configuration */
  64 #define CFG_39X_DMA1    0x75    /* DMA 1 configuration */
  65 #define CFG_39X_SPC     0xF0    /* Serial port configuration register */
  66
  67 /* Flags for configuration register CRF0 */
  68 #define APEDCRC         0x02
  69 #define ENBNKSEL        0x01
  70
  71 /* Set 0 */
  72 #define TXD             0x00 /* Transmit data port */
  73 #define RXD             0x00 /* Receive data port */
  74
  75 /* Register 1 */
  76 #define IER             0x01 /* Interrupt Enable Register*/
  77 #define IER_RXHDL_IE    0x01 /* Receiver high data level interrupt */
  78 #define IER_TXLDL_IE    0x02 /* Transeiver low data level interrupt */
  79 #define IER_LS_IE       0x04//* Link Status Interrupt */
  80 #define IER_ETXURI      0x04 /* Tx underrun */
  81 #define IER_DMA_IE      0x10 /* DMA finished interrupt */
  82 #define IER_TXEMP_IE    0x20
  83 #define IER_SFIF_IE     0x40 /* Frame status FIFO intr */
  84 #define IER_TMR_IE      0x80 /* Timer event */
  85
  86 #define FCR             0x02 /* (write only) */
  87 #define FCR_FIFO_EN     0x01 /* Enable FIFO's */
  88 #define FCR_RXSR        0x02 /* Rx FIFO soft reset */
  89 #define FCR_TXSR        0x04 /* Tx FIFO soft reset */
  90 #define FCR_RXTH        0x40 /* Rx FIFO threshold (set to 16) */
  91 #define FCR_TXTH        0x20 /* Tx FIFO threshold (set to 17) */
  92
  93 #define EIR             0x02 /* (read only) */
  94 #define EIR_RXHDL_EV    0x01
  95 #define EIR_TXLDL_EV    0x02
  96 #define EIR_LS_EV       0x04
  97 #define EIR_DMA_EV      0x10
  98 #define EIR_TXEMP_EV    0x20
  99 #define EIR_SFIF_EV     0x40
 100 #define EIR_TMR_EV      0x80
 101
 102 #define LCR             0x03 /* Link control register */
 103 #define LCR_WLS_8       0x03 /* 8 bits */
 104
 105 #define BSR             0x03 /* Bank select register */
 106 #define BSR_BKSE        0x80
 107 #define BANK0           LCR_WLS_8 /* Must make sure that we set 8N1 */
 108 #define BANK1           0x80
 109 #define BANK2           0xe0
 110 #define BANK3           0xe4
 111 #define BANK4           0xe8
 112 #define BANK5           0xec
 113 #define BANK6           0xf0
 114 #define BANK7           0xf4
 115
 116 #define MCR             0x04 /* Mode Control Register */
 117 #define MCR_MODE_MASK   ~(0xd0)
 118 #define MCR_UART        0x00
 119 #define MCR_RESERVED    0x20
 120 #define MCR_SHARP_IR    0x40
 121 #define MCR_SIR         0x60
 122 #define MCR_MIR         0x80
 123 #define MCR_FIR         0xa0
 124 #define MCR_CEIR        0xb0
 125 #define MCR_IR_PLS      0x10
 126 #define MCR_DMA_EN      0x04
 127 #define MCR_EN_IRQ      0x08
 128 #define MCR_TX_DFR      0x08
 129
 130 #define LSR             0x05 /* Link status register */
 131 #define LSR_RXDA        0x01 /* Receiver data available */
 132 #define LSR_TXRDY       0x20 /* Transmitter ready */
 133 #define LSR_TXEMP       0x40 /* Transmitter empty */
 134
 135 #define ASCR            0x07 /* Auxillary Status and Control Register */
 136 #define ASCR_RXF_TOUT   0x01 /* Rx FIFO timeout */
 137 #define ASCR_FEND_INF   0x02 /* Frame end bytes in rx FIFO */
 138 #define ASCR_S_EOT      0x04 /* Set end of transmission */
 139 #define ASCT_RXBSY      0x20 /* Rx busy */
 140 #define ASCR_TXUR       0x40 /* Transeiver underrun */
 141 #define ASCR_CTE        0x80 /* Clear timer event */
 142
 143 /* Bank 2 */
 144 #define BGDL            0x00 /* Baud Generator Divisor Port (Low Byte) */
 145 #define BGDH            0x01 /* Baud Generator Divisor Port (High Byte) */
 146
 147 #define ECR1            0x02 /* Extended Control Register 1 */
 148 #define ECR1_EXT_SL     0x01 /* Extended Mode Select */
 149 #define ECR1_DMANF      0x02 /* DMA Fairness */
 150 #define ECR1_DMATH      0x04 /* DMA Threshold */
 151 #define ECR1_DMASWP     0x08 /* DMA Swap */
 152
 153 #define EXCR2           0x04
 154 #define EXCR2_TFSIZ     0x01 /* Rx FIFO size = 32 */
 155 #define EXCR2_RFSIZ     0x04 /* Tx FIFO size = 32 */
 156
 157 #define TXFLV           0x06 /* Tx FIFO level */
 158 #define RXFLV           0x07 /* Rx FIFO level */
 159
 160 /* Bank 3 */
 161 #define MID             0x00
 162
 163 /* Bank 4 */
 164 #define TMRL            0x00 /* Timer low byte */
 165 #define TMRH            0x01 /* Timer high byte */
 166 #define IRCR1           0x02 /* Infrared control register 1 */
 167 #define IRCR1_TMR_EN    0x01 /* Timer enable */
 168
 169 #define TFRLL           0x04
 170 #define TFRLH           0x05
 171 #define RFRLL           0x06
 172 #define RFRLH           0x07
 173
 174 /* Bank 5 */
 175 #define IRCR2           0x04 /* Infrared control register 2 */
 176 #define IRCR2_MDRS      0x04 /* MIR data rate select */
 177 #define IRCR2_FEND_MD   0x20 /* */
 178
 179 #define FRM_ST          0x05 /* Frame status FIFO */
 180 #define FRM_ST_VLD      0x80 /* Frame status FIFO data valid */
 181 #define FRM_ST_ERR_MSK  0x5f
 182 #define FRM_ST_LOST_FR  0x40 /* Frame lost */
 183 #define FRM_ST_MAX_LEN  0x10 /* Max frame len exceeded */
 184 #define FRM_ST_PHY_ERR  0x08 /* Physical layer error */
 185 #define FRM_ST_BAD_CRC  0x04
 186 #define FRM_ST_OVR1     0x02 /* Rx FIFO overrun */
 187 #define FRM_ST_OVR2     0x01 /* Frame status FIFO overrun */
 188
 189 #define RFLFL           0x06
 190 #define RFLFH           0x07
 191
 192 /* Bank 6 */
 193 #define IR_CFG2         0x00
 194 #define IR_CFG2_DIS_CRC 0x02
 195
 196 /* Bank 7 */
 197 #define IRM_CR          0x07 /* Infrared module control register */
 198 #define IRM_CR_IRX_MSL  0x40
 199 #define IRM_CR_AF_MNT   0x80 /* Automatic format */
 200
 201 /* NSC chip information */
 202 struct nsc_chip {
 203         char *name;          /* Name of chipset */
 204         int cfg[3];          /* Config registers */
 205         u_int8_t cid_index;  /* Chip identification index reg */
 206         u_int8_t cid_value;  /* Chip identification expected value */
 207         u_int8_t cid_mask;   /* Chip identification revision mask */
 208
 209         /* Functions for probing and initializing the specific chip */
 210         int (*probe)(struct nsc_chip *chip, chipio_t *info);
 211         int (*init)(struct nsc_chip *chip, chipio_t *info);
 212 };
 213 typedef struct nsc_chip nsc_chip_t;
 214
 215 /* For storing entries in the status FIFO */
 216 struct st_fifo_entry {
 217         int status;
 218         int len;
 219 };
 220
 221 #define MAX_TX_WINDOW 7
 222 #define MAX_RX_WINDOW 7
 223
 224 struct st_fifo {
 225         struct st_fifo_entry entries[MAX_RX_WINDOW];
 226         int pending_bytes;
 227         int head;
 228         int tail;
 229         int len;
 230 };
 231
 232 struct frame_cb {
 233         void *start; /* Start of frame in DMA mem */
 234         int len;     /* Length of frame in DMA mem */
 235 };
 236
 237 struct tx_fifo {
 238         struct frame_cb queue[MAX_TX_WINDOW]; /* Info about frames in queue */
 239         int             ptr;                  /* Currently being sent */
 240         int             len;                  /* Length of queue */
 241         int             free;                 /* Next free slot */
 242         void           *tail;                 /* Next free start in DMA mem */
 243 };
 244
 245 /* Private data for each instance */
 246 struct nsc_ircc_cb {
 247         struct st_fifo st_fifo;    /* Info about received frames */
 248         struct tx_fifo tx_fifo;    /* Info about frames to be transmitted */
 249
 250         struct net_device *netdev;     /* Yes! we are some kind of netdevice */
 251         struct net_device_stats stats;
 252
 253         struct irlap_cb *irlap;    /* The link layer we are binded to */
 254         struct qos_info qos;       /* QoS capabilities for this device */
 255
 256         chipio_t io;               /* IrDA controller information */
 257         iobuff_t tx_buff;          /* Transmit buffer */
 258         iobuff_t rx_buff;          /* Receive buffer */
 259         dma_addr_t tx_buff_dma;
 260         dma_addr_t rx_buff_dma;
 261
 262         __u8 ier;                  /* Interrupt enable register */
 263
 264         struct timeval stamp;
 265         struct timeval now;
 266
 267         spinlock_t lock;           /* For serializing operations */
 268
 269         __u32 new_speed;
 270         int index;                 /* Instance index */
 271
 272         struct platform_device *pldev;
 273 };
 274
 275 static inline void switch_bank(int iobase, int bank)
 276 {
 277                 outb(bank, iobase+BSR);
 278 }
 279
 280 #endif /* NSC_IRCC_H */