i82586/96 MI stuff currently in 586 mode, tested on hppa; from netbsd i82586

1 files changed, 298 insertions, 0 deletions

diff --git a/sys/dev/ic/i82596var.h b/sys/dev/ic/i82596var.h
new file mode 100644
index 00000000000..7fbd7b30daa
--- /dev/null
+++ b/sys/dev/ic/i82596var.h
@@ -0,0 +1,298 @@
+/*	$OpenBSD: i82596var.h,v 1.1 1999/08/15 23:49:30 mickey Exp $	*/
+/*	$NetBSD: i82586var.h,v 1.10 1998/08/15 04:42:42 mycroft Exp $	*/
+
+/*-
+ * Copyright (c) 1998 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Paul Kranenburg and Charles M. Hannum.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*-
+ * Copyright (c) 1992, 1993, University of Vermont and State
+ *  Agricultural College.
+ * Copyright (c) 1992, 1993, Garrett A. Wollman.
+ *
+ * Portions:
+ * Copyright (c) 1994, 1995, Rafal K. Boni
+ * Copyright (c) 1990, 1991, William F. Jolitz
+ * Copyright (c) 1990, The Regents of the University of California
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of Vermont
+ *	and State Agricultural College and Garrett A. Wollman, by William F.
+ *	Jolitz, and by the University of California, Berkeley, Lawrence
+ *	Berkeley Laboratory, and its contributors.
+ * 4. Neither the names of the Universities nor the names of the authors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE UNIVERSITY OR AUTHORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * Intel 82586/82596 Ethernet chip
+ * Register, bit, and structure definitions.
+ *
+ * Original StarLAN driver written by Garrett Wollman with reference to the
+ * Clarkson Packet Driver code for this chip written by Russ Nelson and others.
+ *
+ * BPF support code taken from hpdev/if_le.c, supplied with tcpdump.
+ *
+ * 3C507 support is loosely based on code donated to NetBSD by Rafal Boni.
+ *
+ * Majorly cleaned up and 3C507 code merged by Charles Hannum.
+ *
+ * Converted to SUN ie driver by Charles D. Cranor,
+ *		October 1994, January 1995.
+ * This sun version based on i386 version 1.30.
+ */
+
+#undef I82596_DEBUG
+
+/* Debug elements */
+#define	IED_RINT	0x01
+#define	IED_TINT	0x02
+#define	IED_RNR		0x04
+#define	IED_CNA		0x08
+#define	IED_READFRAME	0x10
+#define IED_ENQ		0x20
+#define IED_XMIT	0x40
+#define IED_CMDS	0x80
+#define	IED_ALL		0xff
+
+#define	ETHER_MIN_LEN	64
+#define	ETHER_MAX_LEN	1518
+
+#define B_PER_F		3		/* recv buffers per frame */
+#define	IE_RBUF_SIZE	256		/* size of each receive buffer;
+						MUST BE POWER OF TWO */
+#define	NTXBUF		2		/* number of transmit commands */
+#define	IE_TBUF_SIZE	ETHER_MAX_LEN	/* length of transmit buffer */
+
+#define IE_MAXMCAST	(IE_TBUF_SIZE/6)/* must fit in transmit buffer */
+
+
+#define INTR_ENTER	0		/* intr hook called on ISR entry */
+#define INTR_EXIT	1		/* intr hook called on ISR exit */
+#define INTR_LOOP	2		/* intr hook called on ISR loop */
+
+#define CHIP_PROBE	0		/* reset called from chip probe */
+#define CARD_RESET	1		/* reset called from card reset */
+
+/*
+ * Ethernet status, per interface.
+ *
+ * The chip uses two types of pointers: 16 bit and 24 bit
+ *   24 bit pointers cover the board's memory.
+ *   16 bit pointers are offsets from the ISCP's `ie_base'
+ *
+ * The board's memory is represented by the bus handle `bh'. The MI
+ * i82586/596 driver deals exclusively with offsets relative to the
+ * board memory bus handle. The `ie_softc' fields below that are marked
+ * `MD' are in the domain of the front-end driver; they opaque to the
+ * MI driver part.
+ *
+ * The front-end is required to manage the SCP and ISCP structures. i.e.
+ * allocate room for them on the board's memory, and arrange to point the
+ * chip at the SCB stucture, the offset of which is passed to the MI
+ * driver in `sc_scb'.
+ *
+ * The following functions provide the glue necessary to deal with
+ * host and bus idiosyncracies:
+ *
+ *	hwreset		- board reset
+ *	hwinit		- board initialization
+ *	chan_attn	- get chip to look at prepared commands
+ *	intrhook	- board dependent interrupt processing
+ *
+ *	All of the following shared-memory access function use an offset
+ *	relative to the bus handle to indicate the shared memory location.
+ *	The bus_{read/write}N function take or return offset into the
+ *	shared memory in the host's byte-order.
+ *
+ *	memcopyin	- copy device memory: board to KVA
+ *	memcopyout	- copy device memory: KVA to board
+ *	bus_read16	- read a 16-bit i82586 pointer
+			  `offset' argument will be 16-bit aligned
+ *	bus_write16	- write a 16-bit i82586 pointer
+			  `offset' argument will be 16-bit aligned
+ *	bus_write24	- write a 24-bit i82586 pointer
+			  `offset' argument will be 32-bit aligned
+ *
+ */
+
+struct ie_softc {
+	struct device sc_dev;   /* device structure */
+	void *sc_ih;
+
+	bus_space_tag_t	iot;	/* bus-space tag of card registers */
+	bus_space_handle_t ioh;	/* bus-space handle of card registers */
+
+	bus_space_tag_t	bt;	/* bus-space tag of card memory */
+	bus_space_handle_t bh;	/* bus-space handle of card memory */
+
+	const char *sc_type;	/* (MD) hardware type */
+	int	sc_vers;	/* (MD) hardvare version */
+	int	sc_irq;		/* (MD) irq in md format */
+	void	*sc_iobase;	/* (MD) KVA of base of 24 bit addr space */
+	u_long	sc_maddr;	/* (MD) base of chip's RAM (16bit addr space) */
+	u_int	sc_msize;	/* (MD) how much RAM we have/use */
+	void	*sc_reg;	/* (MD) KVA of car's register (also iot/ioh) */
+	u_int	sc_flags;	/* (MI/MD) flags */
+#define	IEMD_FLAG0	0x00010000
+#define	IEMD_FLAG1	0x00020000
+#define	IEMD_FLAG2	0x00040000
+#define	IEMD_FLAG3	0x00080000
+#define	IEMD_FLAG4	0x00100000
+#define	IEMD_FLAG5	0x00200000
+#define	IEMD_FLAG6	0x00400000
+#define	IEMD_FLAG7	0x00800000
+	struct	arpcom sc_arpcom;	/* system ethercom structure */
+	struct	ifmedia sc_media;	/* supported media information */
+
+	/* Bus glue */
+	void	(*hwreset) __P((struct ie_softc *, int));
+	void	(*hwinit) __P((struct ie_softc *));
+	void	(*chan_attn) __P((struct ie_softc *));
+	int	(*intrhook) __P((struct ie_softc *, int where));
+
+	void	(*memcopyin) __P((struct ie_softc *, void *, int, size_t));
+	void	(*memcopyout) __P((struct ie_softc *, const void *,
+				   int, size_t));
+	u_int16_t (*ie_bus_read16) __P((struct ie_softc *, int offset));
+	void	(*ie_bus_write16) __P((struct ie_softc *, int offset,
+					u_int16_t value));
+	void	(*ie_bus_write24) __P((struct ie_softc *, int offset,
+					int addr));
+
+	/* Media management */
+        int  (*sc_mediachange) __P((struct ie_softc *));
+				/* card dependent media change */
+        void (*sc_mediastatus) __P((struct ie_softc *, struct ifmediareq *));
+				/* card dependent media status */
+
+
+	/*
+	 * Offsets (relative to bus handle) of the i82586 SYSTEM structures.
+	 */
+	int	scp;		/* Offset to the SCP (set by front-end) */
+	int	iscp;		/* Offset to the ISCP (set by front-end) */
+	int	scb;		/* Offset to SCB (set by front-end) */
+
+	/*
+	 * Offset and size of a block of board memory where the buffers
+	 * are to be allocated from (initialized by front-end).
+	 */
+	int	buf_area;	/* Start of descriptors and buffers */
+	int	buf_area_sz;	/* Size of above */
+
+	/*
+	 * The buffers & descriptors (recv and xmit)
+	 */
+	int	rframes;	/* Offset to `nrxbuf' frame descriptors */
+	int	rbds;		/* Offset to `nrxbuf' buffer descriptors */
+	int	rbufs;		/* Offset to `nrxbuf' receive buffers */
+#define IE_RBUF_ADDR(sc, i)	(sc->rbufs + ((i) * IE_RBUF_SIZE))
+        int	rfhead, rftail;
+	int	rbhead, rbtail;
+	int	nframes;	/* number of frames in use */
+	int	nrxbuf;		/* number of recv buffs in use */
+	int	rnr_expect;	/* XXX - expect a RCVR not ready interrupt */
+
+	int	nop_cmds;	/* Offset to NTXBUF no-op commands */
+	int	xmit_cmds;	/* Offset to NTXBUF transmit commands */
+	int	xbds;		/* Offset to NTXBUF buffer descriptors */
+	int	xbufs;		/* Offset to NTXBUF transmit buffers */
+#define IE_XBUF_ADDR(sc, i)	(sc->xbufs + ((i) * IE_TBUF_SIZE))
+
+	int	xchead, xctail;
+	int	xmit_busy;
+	int	do_xmitnopchain;	/* Controls use of xmit NOP chains */
+
+	/* Multicast addresses */
+	char	*mcast_addrs;		/* Current MC filter addresses */
+	int	mcast_addrs_size;	/* Current size of MC buffer */
+	int	mcast_count;		/* Current # of addrs in buffer */
+	int	want_mcsetup;		/* run mcsetup at next opportunity */
+
+	int	promisc;		/* are we in promisc mode? */
+	int	async_cmd_inprogress;	/* we didn't wait for 586 to accept
+					   a command */
+
+#ifdef I82596_DEBUG
+	int	sc_debug;
+#endif
+};
+
+/* Exported functions */
+int 	i82596_intr	__P((void *));
+int 	i82596_probe	__P((struct ie_softc *));
+int 	i82596_proberam	__P((struct ie_softc *));
+void 	i82596_attach	__P((struct ie_softc *, const char *, u_int8_t *, 
+			     int*, int, int));
+int 	i82596_start_cmd __P((struct ie_softc *, int, int, int, int));
+
+/*
+ * Interrupt Acknowledge.
+ */
+static __inline__ void
+ie_ack(struct ie_softc *sc, u_int mask) /* in native byte-order */
+{
+	register u_int status;
+
+	bus_space_barrier(sc->bt, sc->bh, 0, 0, BUS_SPACE_BARRIER_READ);
+	status = (sc->ie_bus_read16)(sc, IE_SCB_STATUS(sc->scb));
+	i82596_start_cmd(sc, status & mask, 0, 0, 0);
+}
+