NetBSD/sys/dev/ieee1394/fwohcivar.h

/*	$NetBSD: fwohcivar.h,v 1.14 2001/05/15 06:52:31 jmc Exp $	*/

/*-
 * Copyright (c) 2000 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Matt Thomas of the 3am Software Foundry.
 *
 * 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.
 */

#ifndef _DEV_IEEE1394_FWOHCIVAR_H_
#define	_DEV_IEEE1394_FWOHCIVAR_H_

#include <sys/mbuf.h>
#include <sys/callout.h>
#include <sys/queue.h>

#include <machine/bus.h>

#define	OHCI_PAGE_SIZE		0x0800
#define	OHCI_BUF_ARRQ_CNT	16
#define	OHCI_BUF_ARRS_CNT	8
#define	OHCI_BUF_ATRQ_CNT	(8*8)
#define	OHCI_BUF_ATRS_CNT	(8*8)
#define	OHCI_BUF_IR_CNT		16
#define	OHCI_BUF_CNT							\
	(OHCI_BUF_ARRQ_CNT + OHCI_BUF_ARRS_CNT + OHCI_BUF_ATRQ_CNT +	\
	    OHCI_BUF_ATRS_CNT + OHCI_BUF_IR_CNT + 1 + 1)

#define	OHCI_LOOP		1000
#define	OHCI_SELFID_TIMEOUT	(hz * 3)

struct fwohci_softc;
struct fwohci_pkt;

struct fwohci_buf {
	TAILQ_ENTRY(fwohci_buf) fb_list;
	bus_dma_segment_t fb_seg;
	int fb_nseg;
	bus_dmamap_t fb_dmamap;
	caddr_t fb_buf;
	struct fwohci_desc *fb_desc;
	bus_addr_t fb_daddr;
	int fb_off;
	struct mbuf *fb_m;
	void *fb_statusarg;
	void (*fb_callback)(struct device *, struct mbuf *);
	int (*fb_statuscb)(struct fwohci_softc *, void *, struct fwohci_pkt *);
};

struct fwohci_pkt {
	int	fp_tcode;
	int	fp_hlen;
	int	fp_dlen;
	u_int32_t fp_hdr[4];
	struct uio fp_uio;
	struct iovec fp_iov[6];
	u_int32_t *fp_trail;
	struct mbuf *fp_m;
	u_int16_t fp_status;
	void *fp_statusarg;
	int (*fp_statuscb)(struct fwohci_softc *, void *, struct fwohci_pkt *);
	void (*fp_callback)(struct device *, struct mbuf *);
};

struct fwohci_handler {
	LIST_ENTRY(fwohci_handler) fh_list;
	u_int32_t	fh_tcode;	/* ARRQ   / ARRS   / IR   */
	u_int32_t	fh_key1;	/* addrhi / srcid  / chan */
	u_int32_t	fh_key2;	/* addrlo / tlabel / tag  */
	int		(*fh_handler)(struct fwohci_softc *, void *,
	    struct fwohci_pkt *);
	void		*fh_handarg;
};

struct fwohci_ctx {
	int	fc_ctx;
	int	fc_isoch;
	int	fc_bufcnt;
	u_int32_t	*fc_branch;
	TAILQ_HEAD(fwohci_buf_s, fwohci_buf) fc_buf;
	LIST_HEAD(, fwohci_handler) fc_handler;
};

struct fwohci_uidtbl {
	int		fu_valid;
	u_int8_t	fu_uid[8];
};

/*
 * Needed to keep track of outstanding packets during a read op. Since the
 * packet stream is asynch it's possible to parse a response packet before the
 * ack bits are processed. In this case something needs to track whether the
 * abuf is still valid before possibly attempting to use items from within it.
 */

struct fwohci_cb {
	struct ieee1394_abuf *ab;
	int count;
	int abuf_valid;
};

struct fwohci_softc {
	struct ieee1394_softc sc_sc1394;
	struct evcnt sc_intrcnt;

	bus_space_tag_t sc_memt;
	bus_space_handle_t sc_memh;
	bus_dma_tag_t sc_dmat;
	bus_size_t sc_memsize;
#if 0

/* Mandatory structures to get the link enabled
 */
	bus_dmamap_t sc_configrom_map;
	bus_dmamap_t sc_selfid_map;
	u_int32_t *sc_selfid_buf;
	u_int32_t *sc_configrom;
#endif

	bus_dma_segment_t sc_dseg;
	int sc_dnseg;
	bus_dmamap_t sc_ddmamap;
	struct fwohci_desc *sc_desc;
	u_int8_t *sc_descmap;
	int sc_descsize;
	int sc_isoctx;

	void *sc_shutdownhook;
	void *sc_powerhook;
	struct callout sc_selfid_callout;
	int sc_selfid_fail;

	struct fwohci_ctx *sc_ctx_arrq;
	struct fwohci_ctx *sc_ctx_arrs;
	struct fwohci_ctx *sc_ctx_atrq;
	struct fwohci_ctx *sc_ctx_atrs;
	struct fwohci_ctx **sc_ctx_ir;
	struct fwohci_buf sc_buf_cnfrom;
	struct fwohci_buf sc_buf_selfid;

	struct proc *sc_event_thread;

	int sc_dying;
	u_int32_t sc_intmask;
	u_int32_t sc_iso;
    
	u_int8_t sc_csr[CSR_SB_END];

	struct fwohci_uidtbl *sc_uidtbl;
	u_int16_t sc_nodeid;			/* Full Node ID of this node */
	u_int8_t sc_rootid;			/* Phy ID of Root */
	u_int8_t sc_irmid;			/* Phy ID of IRM */
	u_int8_t sc_tlabel;			/* Transaction Label */
	
	LIST_HEAD(, ieee1394_softc) sc_nodelist;
};

int fwohci_init (struct fwohci_softc *, const struct evcnt *);
int fwohci_intr (void *);
int fwohci_print (void *, const char *);

/* Macros to read and write the OHCI registers
 */
#define	OHCI_CSR_WRITE(sc, reg, val) \
	bus_space_write_4((sc)->sc_memt, (sc)->sc_memh, reg, htole32(val))
#define	OHCI_CSR_READ(sc, reg) \
	le32toh(bus_space_read_4((sc)->sc_memt, (sc)->sc_memh, reg))

/* Locators. */

#include "locators.h"

#define fwbuscf_idhi cf_loc[FWBUSCF_IDHI]
#define FWBUS_UNK_IDHI FWBUSCF_IDHI_DEFAULT

#define fwbuscf_idlo cf_loc[FWBUSCF_IDLO]
#define FWBUS_UNK_IDLO FWBUSCF_IDLO_DEFAULT

#endif	/* _DEV_IEEE1394_FWOHCIVAR_H_ */