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      1 /*	$NetBSD: amrvar.h,v 1.10 2015/03/02 15:26:57 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2002, 2003 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Andrew Doran.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef	_PCI_AMRVAR_H_
     33 #define	_PCI_AMRVAR_H_
     34 
     35 #define	AMR_MAX_UNITS		16
     36 #define	AMR_WDOG_TICKS		(hz * 5)
     37 #define	AMR_NCCB_RESV		2
     38 #define	AMR_ENQUIRY_BUFSIZE	2048
     39 #define	AMR_SGL_SIZE		(sizeof(struct amr_sgentry) * AMR_MAX_SEGS)
     40 #define	AMR_TIMEOUT		30
     41 
     42 /*
     43  * Logical drive information.
     44  */
     45 struct amr_logdrive {
     46 	u_int		al_size;
     47 	u_short		al_state;
     48 	u_short		al_properties;
     49 	device_t	al_dv;
     50 };
     51 
     52 /*
     53  * Per-controller state.
     54  */
     55 struct amr_softc {
     56 	device_t		amr_dv;
     57 	bus_space_tag_t		amr_iot;
     58 	bus_space_handle_t	amr_ioh;
     59 	bus_size_t		amr_ios;
     60 	bus_dma_tag_t		amr_dmat;
     61 	pci_chipset_tag_t	amr_pc;
     62 	void			*amr_ih;
     63 	struct lwp		*amr_thread;
     64 	int			amr_flags;
     65 
     66 	struct amr_mailbox	*amr_mbox;
     67 	bus_addr_t		amr_mbox_paddr;
     68 	bus_dmamap_t		amr_dmamap;
     69         bus_dma_segment_t	amr_dmaseg;
     70         int			amr_dmasize;
     71         void			*amr_enqbuf;
     72 
     73 	struct amr_sgentry	*amr_sgls;
     74 	bus_addr_t		amr_sgls_paddr;
     75 
     76 	struct amr_ccb		*amr_ccbs;
     77 	SLIST_HEAD(, amr_ccb)	amr_ccb_freelist;
     78 	SIMPLEQ_HEAD(, amr_ccb)	amr_ccb_queue;
     79 	TAILQ_HEAD(, amr_ccb)	amr_ccb_active;
     80 	int			amr_maxqueuecnt;
     81 
     82 	int	(*amr_get_work)(struct amr_softc *, struct amr_mailbox_resp *);
     83 	int	(*amr_submit)(struct amr_softc *sc, struct amr_ccb *);
     84 
     85 	kmutex_t		amr_mutex;
     86 
     87 	int			amr_numdrives;
     88 	struct amr_logdrive	amr_drive[AMR_MAX_UNITS];
     89 };
     90 
     91 /* What resources are allocated? */
     92 #define	AMRF_INTR		0x00000001
     93 #define	AMRF_DMA_LOAD		0x00000002
     94 #define	AMRF_DMA_MAP		0x00000004
     95 #define	AMRF_DMA_ALLOC		0x00000008
     96 #define	AMRF_DMA_CREATE		0x00000010
     97 #define	AMRF_PCI_INTR		0x00000020
     98 #define	AMRF_PCI_REGS		0x00000040
     99 #define	AMRF_CCBS		0x00000080
    100 #define	AMRF_ENQBUF		0x00000100
    101 #define	AMRF_THREAD		0x00000200
    102 
    103 /* General flags. */
    104 #define	AMRF_THREAD_EXIT	0x00010000
    105 #define	AMRF_OPEN		0x00020000
    106 
    107 /*
    108  * Command control block.
    109  */
    110 struct amr_ccb {
    111 	union {
    112 		SIMPLEQ_ENTRY(amr_ccb) simpleq;
    113 		SLIST_ENTRY(amr_ccb) slist;
    114 		TAILQ_ENTRY(amr_ccb) tailq;
    115 	} ac_chain;
    116 
    117 	u_int		ac_flags;
    118 	u_int		ac_status;
    119 	u_int		ac_ident;
    120 	u_int		ac_xfer_size;
    121 	time_t		ac_start_time;
    122 	bus_dmamap_t	ac_xfer_map;
    123 	void		(*ac_handler)(struct amr_ccb *);
    124 	void 		*ac_context;
    125 	device_t	ac_dv;
    126 	struct amr_mailbox_cmd	ac_cmd;
    127 	kmutex_t	ac_mutex;
    128 	kcondvar_t	ac_cv;
    129 };
    130 #define	AC_XFER_IN	0x01	/* Map describes inbound xfer */
    131 #define	AC_XFER_OUT	0x02	/* Map describes outbound xfer */
    132 #define	AC_COMPLETE	0x04	/* Command completed */
    133 #define	AC_ACTIVE	0x08	/* Command active */
    134 #define	AC_NOSGL	0x10	/* No scatter/gather list */
    135 #define AC_MOAN		0x20	/* We have already moaned */
    136 
    137 struct amr_attach_args {
    138 	int		amra_unit;
    139 };
    140 
    141 int	amr_ccb_alloc(struct amr_softc *, struct amr_ccb **);
    142 void	amr_ccb_enqueue(struct amr_softc *, struct amr_ccb *);
    143 void	amr_ccb_free(struct amr_softc *, struct amr_ccb *);
    144 int	amr_ccb_map(struct amr_softc *, struct amr_ccb *, void *, int, int);
    145 int	amr_ccb_poll(struct amr_softc *, struct amr_ccb *, int);
    146 void	amr_ccb_unmap(struct amr_softc *, struct amr_ccb *);
    147 int	amr_ccb_wait(struct amr_softc *, struct amr_ccb *);
    148 const char	*amr_drive_state(int, int *);
    149 
    150 extern int	amr_max_xfer;
    151 
    152 #endif	/* !_PCI_AMRVAR_H_ */
    153