diff options
Diffstat (limited to 'drivers/staging/irda/drivers/ali-ircc.h')
| -rw-r--r-- | drivers/staging/irda/drivers/ali-ircc.h | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/drivers/staging/irda/drivers/ali-ircc.h b/drivers/staging/irda/drivers/ali-ircc.h new file mode 100644 index 000000000000..c2d9747a5108 --- /dev/null +++ b/drivers/staging/irda/drivers/ali-ircc.h @@ -0,0 +1,227 @@ +/********************************************************************* + * + * Filename: ali-ircc.h + * Version: 0.5 + * Description: Driver for the ALI M1535D and M1543C FIR Controller + * Status: Experimental. + * Author: Benjamin Kong <benjamin_kong@ali.com.tw> + * Created at: 2000/10/16 03:46PM + * Modified at: 2001/1/3 02:56PM + * Modified by: Benjamin Kong <benjamin_kong@ali.com.tw> + * + * Copyright (c) 2000 Benjamin Kong <benjamin_kong@ali.com.tw> + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + ********************************************************************/ + +#ifndef ALI_IRCC_H +#define ALI_IRCC_H + +#include <linux/ktime.h> + +#include <linux/spinlock.h> +#include <linux/pm.h> +#include <linux/types.h> +#include <asm/io.h> + +/* SIR Register */ +/* Usr definition of linux/serial_reg.h */ + +/* FIR Register */ +#define BANK0 0x20 +#define BANK1 0x21 +#define BANK2 0x22 +#define BANK3 0x23 + +#define FIR_MCR 0x07 /* Master Control Register */ + +/* Bank 0 */ +#define FIR_DR 0x00 /* Alias 0, FIR Data Register (R/W) */ +#define FIR_IER 0x01 /* Alias 1, FIR Interrupt Enable Register (R/W) */ +#define FIR_IIR 0x02 /* Alias 2, FIR Interrupt Identification Register (Read only) */ +#define FIR_LCR_A 0x03 /* Alias 3, FIR Line Control Register A (R/W) */ +#define FIR_LCR_B 0x04 /* Alias 4, FIR Line Control Register B (R/W) */ +#define FIR_LSR 0x05 /* Alias 5, FIR Line Status Register (R/W) */ +#define FIR_BSR 0x06 /* Alias 6, FIR Bus Status Register (Read only) */ + + + /* Alias 1 */ + #define IER_FIFO 0x10 /* FIR FIFO Interrupt Enable */ + #define IER_TIMER 0x20 /* Timer Interrupt Enable */ + #define IER_EOM 0x40 /* End of Message Interrupt Enable */ + #define IER_ACT 0x80 /* Active Frame Interrupt Enable */ + + /* Alias 2 */ + #define IIR_FIFO 0x10 /* FIR FIFO Interrupt */ + #define IIR_TIMER 0x20 /* Timer Interrupt */ + #define IIR_EOM 0x40 /* End of Message Interrupt */ + #define IIR_ACT 0x80 /* Active Frame Interrupt */ + + /* Alias 3 */ + #define LCR_A_FIFO_RESET 0x80 /* FIFO Reset */ + + /* Alias 4 */ + #define LCR_B_BW 0x10 /* Brick Wall */ + #define LCR_B_SIP 0x20 /* SIP Enable */ + #define LCR_B_TX_MODE 0x40 /* Transmit Mode */ + #define LCR_B_RX_MODE 0x80 /* Receive Mode */ + + /* Alias 5 */ + #define LSR_FIR_LSA 0x00 /* FIR Line Status Address */ + #define LSR_FRAME_ABORT 0x08 /* Frame Abort */ + #define LSR_CRC_ERROR 0x10 /* CRC Error */ + #define LSR_SIZE_ERROR 0x20 /* Size Error */ + #define LSR_FRAME_ERROR 0x40 /* Frame Error */ + #define LSR_FIFO_UR 0x80 /* FIFO Underrun */ + #define LSR_FIFO_OR 0x80 /* FIFO Overrun */ + + /* Alias 6 */ + #define BSR_FIFO_NOT_EMPTY 0x80 /* FIFO Not Empty */ + +/* Bank 1 */ +#define FIR_CR 0x00 /* Alias 0, FIR Configuration Register (R/W) */ +#define FIR_FIFO_TR 0x01 /* Alias 1, FIR FIFO Threshold Register (R/W) */ +#define FIR_DMA_TR 0x02 /* Alias 2, FIR DMA Threshold Register (R/W) */ +#define FIR_TIMER_IIR 0x03 /* Alias 3, FIR Timer interrupt interval register (W/O) */ +#define FIR_FIFO_FR 0x03 /* Alias 3, FIR FIFO Flag register (R/O) */ +#define FIR_FIFO_RAR 0x04 /* Alias 4, FIR FIFO Read Address register (R/O) */ +#define FIR_FIFO_WAR 0x05 /* Alias 5, FIR FIFO Write Address register (R/O) */ +#define FIR_TR 0x06 /* Alias 6, Test REgister (W/O) */ + + /* Alias 0 */ + #define CR_DMA_EN 0x01 /* DMA Enable */ + #define CR_DMA_BURST 0x02 /* DMA Burst Mode */ + #define CR_TIMER_EN 0x08 /* Timer Enable */ + + /* Alias 3 */ + #define TIMER_IIR_500 0x00 /* 500 us */ + #define TIMER_IIR_1ms 0x01 /* 1 ms */ + #define TIMER_IIR_2ms 0x02 /* 2 ms */ + #define TIMER_IIR_4ms 0x03 /* 4 ms */ + +/* Bank 2 */ +#define FIR_IRDA_CR 0x00 /* Alias 0, IrDA Control Register (R/W) */ +#define FIR_BOF_CR 0x01 /* Alias 1, BOF Count Register (R/W) */ +#define FIR_BW_CR 0x02 /* Alias 2, Brick Wall Count Register (R/W) */ +#define FIR_TX_DSR_HI 0x03 /* Alias 3, TX Data Size Register (high) (R/W) */ +#define FIR_TX_DSR_LO 0x04 /* Alias 4, TX Data Size Register (low) (R/W) */ +#define FIR_RX_DSR_HI 0x05 /* Alias 5, RX Data Size Register (high) (R/W) */ +#define FIR_RX_DSR_LO 0x06 /* Alias 6, RX Data Size Register (low) (R/W) */ + + /* Alias 0 */ + #define IRDA_CR_HDLC1152 0x80 /* 1.152Mbps HDLC Select */ + #define IRDA_CR_CRC 0X40 /* CRC Select. */ + #define IRDA_CR_HDLC 0x20 /* HDLC select. */ + #define IRDA_CR_HP_MODE 0x10 /* HP mode (read only) */ + #define IRDA_CR_SD_ST 0x08 /* SD/MODE State. */ + #define IRDA_CR_FIR_SIN 0x04 /* FIR SIN Select. */ + #define IRDA_CR_ITTX_0 0x02 /* SOUT State. IRTX force to 0 */ + #define IRDA_CR_ITTX_1 0x03 /* SOUT State. IRTX force to 1 */ + +/* Bank 3 */ +#define FIR_ID_VR 0x00 /* Alias 0, FIR ID Version Register (R/O) */ +#define FIR_MODULE_CR 0x01 /* Alias 1, FIR Module Control Register (R/W) */ +#define FIR_IO_BASE_HI 0x02 /* Alias 2, FIR Higher I/O Base Address Register (R/O) */ +#define FIR_IO_BASE_LO 0x03 /* Alias 3, FIR Lower I/O Base Address Register (R/O) */ +#define FIR_IRQ_CR 0x04 /* Alias 4, FIR IRQ Channel Register (R/O) */ +#define FIR_DMA_CR 0x05 /* Alias 5, FIR DMA Channel Register (R/O) */ + +struct ali_chip { + char *name; + int cfg[2]; + unsigned char entr1; + unsigned char entr2; + unsigned char cid_index; + unsigned char cid_value; + int (*probe)(struct ali_chip *chip, chipio_t *info); + int (*init)(struct ali_chip *chip, chipio_t *info); +}; +typedef struct ali_chip ali_chip_t; + + +/* DMA modes needed */ +#define DMA_TX_MODE 0x08 /* Mem to I/O, ++, demand. */ +#define DMA_RX_MODE 0x04 /* I/O to mem, ++, demand. */ + +#define MAX_TX_WINDOW 7 +#define MAX_RX_WINDOW 7 + +#define TX_FIFO_Threshold 8 +#define RX_FIFO_Threshold 1 +#define TX_DMA_Threshold 1 +#define RX_DMA_Threshold 1 + +/* For storing entries in the status FIFO */ + +struct st_fifo_entry { + int status; + int len; +}; + +struct st_fifo { + struct st_fifo_entry entries[MAX_RX_WINDOW]; + int pending_bytes; + int head; + int tail; + int len; +}; + +struct frame_cb { + void *start; /* Start of frame in DMA mem */ + int len; /* Length of frame in DMA mem */ +}; + +struct tx_fifo { + struct frame_cb queue[MAX_TX_WINDOW]; /* Info about frames in queue */ + int ptr; /* Currently being sent */ + int len; /* Length of queue */ + int free; /* Next free slot */ + void *tail; /* Next free start in DMA mem */ +}; + +/* Private data for each instance */ +struct ali_ircc_cb { + + struct st_fifo st_fifo; /* Info about received frames */ + struct tx_fifo tx_fifo; /* Info about frames to be transmitted */ + + struct net_device *netdev; /* Yes! we are some kind of netdevice */ + + struct irlap_cb *irlap; /* The link layer we are binded to */ + struct qos_info qos; /* QoS capabilities for this device */ + + chipio_t io; /* IrDA controller information */ + iobuff_t tx_buff; /* Transmit buffer */ + iobuff_t rx_buff; /* Receive buffer */ + dma_addr_t tx_buff_dma; + dma_addr_t rx_buff_dma; + + __u8 ier; /* Interrupt enable register */ + + __u8 InterruptID; /* Interrupt ID */ + __u8 BusStatus; /* Bus Status */ + __u8 LineStatus; /* Line Status */ + + unsigned char rcvFramesOverflow; + + ktime_t stamp; + + spinlock_t lock; /* For serializing operations */ + + __u32 new_speed; + int index; /* Instance index */ + + unsigned char fifo_opti_buf; +}; + +static inline void switch_bank(int iobase, int bank) +{ + outb(bank, iobase+FIR_MCR); +} + +#endif /* ALI_IRCC_H */ |