patch-2.1.30 linux/include/linux/pi2.h

• Lines: 131
• Date: Thu Mar 20 18:17:11 1997
• Orig file: v2.1.29/linux/include/linux/pi2.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.29/linux/include/linux/pi2.h linux/include/linux/pi2.h
@@ -0,0 +1,130 @@
+
+#define DMA_BUFF_SIZE 2200
+
+#define ON 1
+#define OFF 0
+
+
+/* Register offset info, specific to the PI
+ * E.g., to read the data port on channel A, use
+ *  inportb(pichan[dev].base + CHANA + DATA)
+ */
+#define CHANB   0   /* Base of channel B regs */
+#define CHANA   2   /* Base of channel A regs */
+
+/* 8530 ports on each channel */
+#define CTL 0
+#define DATA    1
+
+#define DMAEN   0x4 /* Offset off DMA Enable register */
+
+/* Timer chip offsets */
+#define TMR0    0x8 /* Offset of timer 0 register */
+#define TMR1    0x9 /* Offset of timer 1 register */
+#define TMR2    0xA /* Offset of timer 2 register */
+#define TMRCMD  0xB /* Offset of timer command register */
+
+/* Timer chip equates */
+#define SC0 0x00 /* Select counter 0 */
+#define SC1 0x40 /* Select counter 1 */
+#define SC2 0x80 /* Select counter 2 */
+#define CLATCH  0x00 /* Counter latching operation */
+#define MSB 0x20 /* Read/load MSB only */
+#define LSB 0x10 /* Read/load LSB only */
+#define LSB_MSB 0x30 /* Read/load LSB, then MSB */
+#define MODE0   0x00 /* Interrupt on terminal count */
+#define MODE1   0x02 /* Programmable one shot */
+#define MODE2   0x04 /* Rate generator */
+#define MODE3   0x06 /* Square wave rate generator */
+#define MODE4   0x08 /* Software triggered strobe */
+#define MODE5   0x0a /* Hardware triggered strobe */
+#define BCD 0x01 /* BCD counter */
+
+/* DMA controller registers */
+#define DMA_STAT    8   /* DMA controller status register */
+#define DMA_CMD     8   /* DMA controller command register */
+#define DMA_MASK        10  /* DMA controller mask register */
+#define DMA_MODE        11  /* DMA controller mode register */
+#define DMA_RESETFF 12  /* DMA controller first/last flip flop  */
+/* DMA data */
+#define DMA_DISABLE (0x04)  /* Disable channel n */
+#define DMA_ENABLE  (0x00)  /* Enable channel n */
+/* Single transfers, incr. address, auto init, writes, ch. n */
+#define DMA_RX_MODE (0x54)
+/* Single transfers, incr. address, no auto init, reads, ch. n */
+#define DMA_TX_MODE (0x48)
+
+#define SINGLE 3686400
+#define DOUBLE 7372800
+
+#define SIOCGPIPARAM		0x5000	/* get PI parameters */
+#define SIOCSPIPARAM		0x5001	/* set */
+#define SIOCGPIBAUD		0x5002	/* get only baud rate */
+#define SIOCSPIBAUD		0x5003	
+#define SIOCGPIDMA		0x5004	/* get only DMA */
+#define SIOCSPIDMA		0x5005	
+#define SIOCGPIIRQ		0x5006	/* get only IRQ */
+#define SIOCSPIIRQ		0x5007	
+
+struct pi_req  {
+    int cmd;
+    int speed;
+    int clockmode;
+    int txdelay;
+    unsigned char persist;
+    int slotime; 
+    int squeldelay;
+    int dmachan;    
+    int irq;    
+};
+
+#ifdef __KERNEL__
+
+/* Information that needs to be kept for each channel. */
+struct pi_local {
+    struct net_device_stats stats; 
+    long open_time;             /* Useless example local info. */
+    unsigned long xtal; 
+
+    struct mbuf *rcvbuf;/* Buffer for current rx packet */
+    struct mbuf *rxdmabuf1; /* DMA rx buffer */
+    struct mbuf *rxdmabuf2; /* DMA rx buffer */
+
+    int bufsiz;         /* Size of rcvbuf */
+    char *rcp;          /* Pointer into rcvbuf */
+
+    struct sk_buff_head sndq;  /* Packets awaiting transmission */
+    int sndcnt;         /* Number of packets on sndq */
+    struct sk_buff *sndbuf;	/* Current buffer being transmitted */
+    char *txdmabuf;     /* Transmit DMA buffer */
+	char *txptr;		/* Used by B port tx */
+	int txcnt;			
+    char tstate;        /* Transmitter state */
+#define IDLE    0       /* Transmitter off, no data pending */
+#define ACTIVE  1       /* Transmitter on, sending data */
+#define UNDERRUN 2      /* Transmitter on, flushing CRC */
+#define FLAGOUT 3       /* CRC sent - attempt to start next frame */
+#define DEFER 4         /* Receive Active - DEFER Transmit */
+#define ST_TXDELAY 5    /* Sending leading flags */
+#define CRCOUT 6
+    char rstate;        /* Set when !DCD goes to 0 (TRUE) */
+/* Normal state is ACTIVE if Receive enabled */
+#define RXERROR 2       /* Error -- Aborting current Frame */
+#define RXABORT 3       /* ABORT sequence detected */
+#define TOOBIG 4        /* too large a frame to store */
+    int dev;            /* Device number */
+    int base;       /* Base of I/O registers */
+    int cardbase;     /* Base address of card */
+    int stata;        /* address of Channel A status regs */
+    int statb;        /* address of Channel B status regs */
+    int speed;        /* Line speed, bps */
+    int clockmode;    /* tapr 9600 modem clocking option */
+    int txdelay;      /* Transmit Delay 10 ms/cnt */
+    unsigned char persist;       /* Persistence (0-255) as a % */
+    int slotime;      /* Delay to wait on persistence hit */
+    int squeldelay;   /* Delay after XMTR OFF for squelch tail */
+    struct iface *iface;    /* Associated interface */
+    int dmachan;           /* DMA channel for this port */
+};
+
+#endif