sync with 0430.

1 files changed, 121 insertions, 0 deletions

diff --git a/sys/arch/sun3/dev/if_ievar.h b/sys/arch/sun3/dev/if_ievar.h
new file mode 100644
index 00000000000..a68c5142d00
--- /dev/null
+++ b/sys/arch/sun3/dev/if_ievar.h
@@ -0,0 +1,121 @@
+/*	$NetBSD: if_ievar.h,v 1.6 1996/03/26 14:38:33 gwr Exp $	*/
+
+/*
+ * Machine-dependent glue for the Intel Ethernet (ie) driver.
+ */
+
+#define B_PER_F         3	/* number of buffers to allocate per frame */
+#define	MXFRAMES	256	/* max number of frames to allow for receive */
+#define	MXRXBUF (MXFRAMES*B_PER_F)	/* max number of buffers to allocate */
+#define	IE_RBUF_SIZE	256	/* size of each buffer, MUST BE POWER OF TWO */
+#define	NTXBUF		2	/* number of transmit buffer/command pairs */
+#define	IE_TBUF_SIZE	(3*512)	/* length of transmit buffer */
+
+enum ie_hardware {
+	IE_VME,			/* multibus to VME ie card */
+	IE_OBIO,		/* on board */
+	IE_VME3E,		/* sun 3e VME card */
+	IE_UNKNOWN
+};
+
+/*
+ * Ethernet status, per interface.
+ *
+ * hardware addresses/sizes to know (all KVA):
+ *   sc_iobase = base of chip's 24 bit address space
+ *   sc_maddr  = base address of chip RAM as stored in ie_base of iscp
+ *   sc_msize  = size of chip's RAM
+ *   sc_reg    = address of card dependent registers
+ *
+ * the chip uses two types of pointers: 16 bit and 24 bit
+ *   16 bit pointers are offsets from sc_maddr/ie_base
+ *      KVA(16 bit offset) = offset + sc_maddr
+ *   24 bit pointers are offset from sc_iobase in KVA
+ *      KVA(24 bit address) = address + sc_iobase
+ *
+ * on the vme/multibus we have the page map to control where ram appears
+ * in the address space.   we choose to have RAM start at 0 in the
+ * 24 bit address space.   this means that sc_iobase == sc_maddr!
+ * to get the phyiscal address of the board's RAM you must take the
+ * top 12 bits of the physical address of the register address
+ * and or in the 4 bits from the status word as bits 17-20 (remember that
+ * the board ignores the chip's top 4 address lines).
+ * For example:
+ *   if the register is @ 0xffe88000, then the top 12 bits are 0xffe00000.
+ *   to get the 4 bits from the the status word just do status & IEVME_HADDR.
+ *   suppose the value is "4".   Then just shift it left 16 bits to get
+ *   it into bits 17-20 (e.g. 0x40000).    Then or it to get the
+ *   address of RAM (in our example: 0xffe40000).   see the attach routine!
+ *
+ * In the onboard ie interface, the 24 bit address space is hardwired
+ * to be 0xff000000 -> 0xffffffff of KVA.   this means that sc_iobase
+ * will be 0xff000000.   sc_maddr will be where ever we allocate RAM
+ * in KVA.    note that since the SCP is at a fixed address it means
+ * that we have to use some memory at a fixed KVA for the SCP.
+ * The Sun PROM leaves a page for us at the end of KVA space.
+ */
+struct ie_softc {
+	struct device sc_dev;	/* device structure */
+
+	struct arpcom sc_arpcom;/* system arpcom structure */
+#define	sc_if	sc_arpcom.ac_if 		/* network-visible interface */
+#define	sc_addr	sc_arpcom.ac_enaddr		/* hardware Ethernet address */
+
+	caddr_t sc_iobase;	/* KVA of base of 24bit addr space */
+	caddr_t sc_maddr;	/* KVA of base of chip's RAM */
+	u_int   sc_msize;	/* how much RAM we have/use */
+	caddr_t sc_reg;		/* KVA of card's register */
+
+	enum ie_hardware hard_type;	/* card type */
+	void    (*reset_586)();	/* card dependent reset function */
+	void    (*chan_attn)();	/* card dependent attn function */
+	void    (*run_586)();	/* card dependent "go on-line" function */
+	void (*sc_bcopy) __P((const void *, void *, u_int));
+	void (*sc_bzero) __P((void *, u_int));
+
+	int     want_mcsetup;	/* flag for multicast setup */
+	int     promisc;	/* are we in promisc mode? */
+
+	/*
+	 * pointers to the 3 major control structures
+	 */
+	volatile struct ie_sys_conf_ptr *scp;
+	volatile struct ie_int_sys_conf_ptr *iscp;
+	volatile struct ie_sys_ctl_block *scb;
+
+	/*
+	 * pointer and size of a block of KVA where the buffers
+	 * are to be allocated from
+	 */
+	caddr_t buf_area;
+	int     buf_area_sz;
+
+	/*
+	 * the actual buffers (recv and xmit)
+	 */
+	volatile struct ie_recv_frame_desc *rframes[MXFRAMES];
+	volatile struct ie_recv_buf_desc *rbuffs[MXRXBUF];
+	volatile char *cbuffs[MXRXBUF];
+	int     rfhead, rftail, rbhead, rbtail;
+
+	volatile struct ie_xmit_cmd *xmit_cmds[NTXBUF];
+	volatile struct ie_xmit_buf *xmit_buffs[NTXBUF];
+	u_char *xmit_cbuffs[NTXBUF];
+	int xmit_busy;
+	int xmit_free;
+	int xchead, xctail;
+
+	struct ie_en_addr mcast_addrs[MAXMCAST + 1];
+	int     mcast_count;
+
+	int nframes;      /* number of frames in use */
+	int nrxbuf;       /* number of recv buffs in use */
+
+#ifdef IEDEBUG
+	int     sc_debug;
+#endif
+};
+
+
+extern void    ie_attach __P((struct ie_softc *));
+extern int  ie_intr __P((void *));