/*
 * Copyright (c) 2003 Hidetoshi Shimokawa
 * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa
 * 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 acknowledgement as bellow:
 *
 *    This product includes software developed by K. Kobayashi and H. Shimokawa
 *
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 * 
 * $FreeBSD$
 *
 */

#ifdef __DragonFly__
typedef	d_thread_t fw_proc;
#include <sys/select.h>
#elif __FreeBSD_version >= 500000
typedef	struct thread fw_proc;
#include <sys/selinfo.h>
#else
typedef	struct proc fw_proc;
#include <sys/select.h>
#endif

#include <sys/uio.h>

#define	splfw splimp

struct fw_device{
	u_int16_t dst;
	struct fw_eui64 eui;
	u_int8_t speed;
	u_int8_t maxrec;
	u_int8_t nport;
	u_int8_t power;
#define CSRROMOFF 0x400
#define CSRROMSIZE 0x400
	int rommax;	/* offset from 0xffff f000 0000 */
	u_int32_t csrrom[CSRROMSIZE/4];
	int rcnt;
	struct firewire_comm *fc;
	u_int32_t status;
#define FWDEVINIT	1
#define FWDEVATTACHED	2
#define FWDEVINVAL	3
	STAILQ_ENTRY(fw_device) link;
};

struct firewire_softc {
#if defined(__FreeBSD__) && __FreeBSD_version >= 500000
	dev_t dev;
#endif
	struct firewire_comm *fc;
};

#define FW_MAX_DMACH 0x20
#define FW_MAX_DEVCH FW_MAX_DMACH
#define FW_XFERTIMEOUT 1

struct firewire_dev_comm {
	device_t dev;
	struct firewire_comm *fc;
	void (*post_busreset) (void *);
	void (*post_explore) (void *);
};

struct tcode_info {
	u_char hdr_len;	/* IEEE1394 header length */
	u_char flag;
#define FWTI_REQ	(1 << 0)
#define FWTI_RES	(1 << 1)
#define FWTI_TLABEL	(1 << 2)
#define FWTI_BLOCK_STR	(1 << 3)
#define FWTI_BLOCK_ASY	(1 << 4)
};

struct firewire_comm{
	device_t dev;
	device_t bdev;
	u_int16_t busid:10,
		  nodeid:6;
	u_int mode;
	u_int nport;
	u_int speed;
	u_int maxrec;
	u_int irm;
	u_int max_node;
	u_int max_hop;
	u_int max_asyretry;
#define FWPHYASYST (1 << 0)
	u_int retry_count;
	u_int32_t ongobus:10,
		  ongonode:6,
		  ongoaddr:16;
	struct fw_device *ongodev;
	struct fw_eui64 ongoeui;
#define	FWMAXCSRDIR     16
	SLIST_HEAD(, csrdir) ongocsr;
	SLIST_HEAD(, csrdir) csrfree;
	u_int32_t status;
#define	FWBUSNOTREADY	(-1)
#define	FWBUSRESET	0
#define	FWBUSINIT	1
#define	FWBUSCYMELECT	2
#define	FWBUSMGRELECT	3
#define	FWBUSMGRDONE	4
#define	FWBUSEXPLORE	5
#define	FWBUSPHYCONF	6
#define	FWBUSEXPDONE	7
#define	FWBUSCOMPLETION	10
	int nisodma;
	struct fw_eui64 eui;
	struct fw_xferq
		*arq, *atq, *ars, *ats, *it[FW_MAX_DMACH],*ir[FW_MAX_DMACH];
	STAILQ_HEAD(, tlabel) tlabels[0x40];
	STAILQ_HEAD(, fw_bind) binds;
	STAILQ_HEAD(, fw_device) devices;
	u_int  sid_cnt;
#define CSRSIZE 0x4000
	u_int32_t csr_arc[CSRSIZE/4];
#define CROMSIZE 0x400
	u_int32_t *config_rom;
	struct crom_src_buf *crom_src_buf;
	struct crom_src *crom_src;
	struct crom_chunk *crom_root;
	struct fw_topology_map *topology_map;
	struct fw_speed_map *speed_map;
	struct callout busprobe_callout;
	struct callout bmr_callout;
	struct callout timeout_callout;
	struct callout retry_probe_callout;
	u_int32_t (*cyctimer) (struct  firewire_comm *);
	void (*ibr) (struct firewire_comm *);
	u_int32_t (*set_bmr) (struct firewire_comm *, u_int32_t);
	int (*ioctl) (dev_t, u_long, caddr_t, int, fw_proc *);
	int (*irx_enable) (struct firewire_comm *, int);
	int (*irx_disable) (struct firewire_comm *, int);
	int (*itx_enable) (struct firewire_comm *, int);
	int (*itx_disable) (struct firewire_comm *, int);
	void (*timeout) (void *);
	void (*poll) (struct firewire_comm *, int, int);
	void (*set_intr) (struct firewire_comm *, int);
	void (*irx_post) (struct firewire_comm *, u_int32_t *);
	void (*itx_post) (struct firewire_comm *, u_int32_t *);
	struct tcode_info *tcode;
	bus_dma_tag_t dmat;
};
#define CSRARC(sc, offset) ((sc)->csr_arc[(offset)/4])

struct csrdir{
	u_int32_t ongoaddr;
	u_int32_t off;
	SLIST_ENTRY(csrdir) link;
};

struct fw_xferq {
	int flag;
#define FWXFERQ_CHTAGMASK 0xff
#define FWXFERQ_RUNNING (1 << 8)
#define FWXFERQ_STREAM (1 << 9)

#define FWXFERQ_BULK (1 << 11)
#define FWXFERQ_MODEMASK (7 << 10)

#define FWXFERQ_EXTBUF (1 << 13)
#define FWXFERQ_OPEN (1 << 14)

#define FWXFERQ_HANDLER (1 << 16)
#define FWXFERQ_WAKEUP (1 << 17)
	void (*start) (struct firewire_comm*);
	int dmach;
	STAILQ_HEAD(, fw_xfer) q;
	u_int queued;
	u_int maxq;
	u_int psize;
	STAILQ_HEAD(, fw_bind) binds;
	struct fwdma_alloc_multi *buf;
	u_int bnchunk;
	u_int bnpacket;
	struct fw_bulkxfer *bulkxfer;
	STAILQ_HEAD(, fw_bulkxfer) stvalid;
	STAILQ_HEAD(, fw_bulkxfer) stfree;
	STAILQ_HEAD(, fw_bulkxfer) stdma;
	struct fw_bulkxfer *stproc;
	struct selinfo rsel;
	caddr_t sc;
	void (*hand) (struct fw_xferq *);
};

struct fw_bulkxfer{
	int poffset;
	struct mbuf *mbuf;
	STAILQ_ENTRY(fw_bulkxfer) link;
	caddr_t start;
	caddr_t end;
	int resp;
};

struct tlabel{
	struct fw_xfer  *xfer;
	STAILQ_ENTRY(tlabel) link;
};

struct fw_bind{
	u_int64_t start;
	u_int64_t end;
	STAILQ_HEAD(, fw_xfer) xferlist;
	STAILQ_ENTRY(fw_bind) fclist;
	STAILQ_ENTRY(fw_bind) chlist;
#define FWACT_NULL	0
#define FWACT_XFER	2
#define FWACT_CH	3
	u_int8_t act_type;
	u_int8_t sub;
};

struct fw_xfer{
	caddr_t sc;
	struct firewire_comm *fc;
	struct fw_xferq *q;
	struct timeval tv;
	int8_t resp;
#define FWXF_INIT 0
#define FWXF_INQ 1
#define FWXF_START 2
#define FWXF_SENT 3
#define FWXF_SENTERR 4
#define FWXF_BUSY 8
#define FWXF_RCVD 10
	u_int8_t state;
	u_int8_t retry;
	u_int8_t tl;
	void (*retry_req) (struct fw_xfer *);
	union{
		void (*hand) (struct fw_xfer *);
	} act;
	struct {
		struct fw_pkt hdr;
		u_int32_t *payload;
		u_int16_t pay_len;
		u_int8_t spd;
	} send, recv;
	struct mbuf *mbuf;
	STAILQ_ENTRY(fw_xfer) link;
	struct malloc_type *malloc;
};

struct fw_rcv_buf {
	struct firewire_comm *fc;
	struct fw_xfer *xfer;
	struct iovec *vec;
	u_int nvec;
	u_int8_t spd;
};

void fw_sidrcv (struct firewire_comm *, u_int32_t *, u_int);
void fw_rcv (struct fw_rcv_buf *);
void fw_xfer_unload ( struct fw_xfer*);
void fw_xfer_free_buf ( struct fw_xfer*);
void fw_xfer_free ( struct fw_xfer*);
struct fw_xfer *fw_xfer_alloc (struct malloc_type *);
struct fw_xfer *fw_xfer_alloc_buf (struct malloc_type *, int, int);
void fw_init (struct firewire_comm *);
int fw_tbuf_update (struct firewire_comm *, int, int);
int fw_rbuf_update (struct firewire_comm *, int, int);
void fw_asybusy (struct fw_xfer *);
int fw_bindadd (struct firewire_comm *, struct fw_bind *);
int fw_bindremove (struct firewire_comm *, struct fw_bind *);
int fw_asyreq (struct firewire_comm *, int, struct fw_xfer*);
void fw_busreset (struct firewire_comm *);
u_int16_t fw_crc16 (u_int32_t *, u_int32_t);
void fw_xfer_timeout (void *);
void fw_xfer_done (struct fw_xfer *);
void fw_asy_callback (struct fw_xfer *);
void fw_asy_callback_free (struct fw_xfer *);
struct fw_device *fw_noderesolve_nodeid (struct firewire_comm *, int);
struct fw_device *fw_noderesolve_eui64 (struct firewire_comm *, struct fw_eui64 *);
struct fw_bind *fw_bindlookup (struct firewire_comm *, u_int16_t, u_int32_t);
void fw_drain_txq (struct firewire_comm *);
int fwdev_makedev (struct firewire_softc *);
int fwdev_destroydev (struct firewire_softc *);
void fwdev_clone (void *, char *, int, dev_t *);

extern int firewire_debug;
extern devclass_t firewire_devclass;

#ifdef __DragonFly__
#define		FWPRI		PCATCH
#else
#define		FWPRI		((PZERO+8)|PCATCH)
#endif

#if defined(__DragonFly__) || __FreeBSD_version < 500000
#define CALLOUT_INIT(x) callout_init(x)
#else
#define CALLOUT_INIT(x) callout_init(x, 0 /* mpsafe */)
#endif

#if defined(__DragonFly__) || __FreeBSD_version < 500000
/* compatibility shim for 4.X */
#define bio buf
#define bio_bcount b_bcount
#define bio_cmd b_flags
#define bio_count b_count
#define bio_data b_data
#define bio_dev b_dev
#define bio_error b_error
#define bio_flags b_flags
#define bio_offset b_offset
#define bio_resid b_resid
#define BIO_ERROR B_ERROR
#define BIO_READ B_READ
#define BIO_WRITE B_WRITE
#define MIN(a,b) (((a)<(b))?(a):(b))
#define MAX(a,b) (((a)>(b))?(a):(b))
#endif

MALLOC_DECLARE(M_FW);
MALLOC_DECLARE(M_FWXFER);