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octeon_fauvar.h revision 1.2 
      1 /*	$NetBSD: octeon_fauvar.h,v 1.2 2020/05/31 06:27:06 simonb Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2007 Internet Initiative Japan, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _OCTEON_FAUVAR_H_
     30 #define _OCTEON_FAUVAR_H_
     31 
     32 /* ---- API */
     33 
     34 struct octfau_desc {
     35 	/* offset in scratch buffer */
     36 	size_t		fd_scroff;	/* XXX offset_t */
     37 	/* FAU register number */
     38 	size_t		fd_regno;	/* XXX offset_t */
     39 };
     40 
     41 void		octfau_op_init(struct octfau_desc *, size_t, size_t);
     42 uint64_t	octfau_op_save(struct octfau_desc *);
     43 void		octfau_op_restore(struct octfau_desc *, uint64_t);
     44 int64_t		octfau_op_inc_8(struct octfau_desc *, int64_t);
     45 int32_t		octfau_op_inc_4(struct octfau_desc *, int32_t);
     46 int16_t		octfau_op_inc_2(struct octfau_desc *, int16_t);
     47 int8_t		octfau_op_inc_1(struct octfau_desc *, int8_t);
     48 int64_t		octfau_op_incwait_8(struct octfau_desc *, int);
     49 int32_t		octfau_op_incwait_4(struct octfau_desc *, int);
     50 int16_t		octfau_op_incwait_2(struct octfau_desc *, int);
     51 int8_t		octfau_op_incwait_1(struct octfau_desc *, int);
     52 int64_t		octfau_op_get_8(struct octfau_desc *);
     53 int32_t		octfau_op_get_4(struct octfau_desc *);
     54 int16_t		octfau_op_get_2(struct octfau_desc *);
     55 int8_t		octfau_op_get_1(struct octfau_desc *);
     56 int64_t		octfau_op_getwait_8(struct octfau_desc *);
     57 int32_t		octfau_op_getwait_4(struct octfau_desc *);
     58 int16_t		octfau_op_getwait_2(struct octfau_desc *);
     59 int8_t		octfau_op_getwait_1(struct octfau_desc *);
     60 void		octfau_op_add_8(struct octfau_desc *, int64_t);
     61 void		octfau_op_add_4(struct octfau_desc *, int32_t);
     62 void		octfau_op_add_2(struct octfau_desc *, int16_t);
     63 void		octfau_op_add_1(struct octfau_desc *, int8_t);
     64 void		octfau_op_set_8(struct octfau_desc *, int64_t);
     65 void		octfau_op_set_4(struct octfau_desc *, int32_t);
     66 void		octfau_op_set_2(struct octfau_desc *, int16_t);
     67 void		octfau_op_set_1(struct octfau_desc *, int8_t);
     68 
     69 /* ---- old API */
     70 
     71 /* XXX */
     72 #define OCT_FAU_REG_OQ_ADDR_INDEX (0)
     73 #define OCT_FAU_REG_ADDR_END (256)
     74 /* XXX */
     75 
     76 /* XXX */
     77 typedef enum {
     78 	OCT_FAU_OP_SIZE_8  = 0,
     79 	OCT_FAU_OP_SIZE_16 = 1,
     80 	OCT_FAU_OP_SIZE_32 = 2,
     81 	OCT_FAU_OP_SIZE_64 = 3
     82 } fau_op_size_t;
     83 /* XXX */
     84 
     85 /*
     86  * XXX
     87  * `scraddr' parameter of IOBDMA operation is actually `index';
     88  */
     89 static inline void
     90 octfau_op_iobdma(int index, uint64_t args)
     91 {
     92 	uint64_t value;
     93 
     94 	value =
     95 	    ((uint64_t)(index & 0xff) << 56) |
     96 	    ((uint64_t)1 << 48) |
     97 	    ((uint64_t)(CN30XXFAU_MAJORDID & 0x1f) << 43) |
     98 	    ((uint64_t)(CN30XXFAU_SUBDID & 0x7) << 40) |
     99 	    ((uint64_t)args & 0xfffffffffULL);
    100 	octeon_iobdma_write_8(value);
    101 }
    102 
    103 /* IOBDMA Operations */
    104 
    105 /* IOBDMA Store Data for FAU Operations */
    106 
    107 static inline void
    108 octfau_op_iobdma_store_data(int scraddr, int incval, int tagwait,
    109     int size, int reg)
    110 {
    111 	uint64_t args;
    112 
    113 	args =
    114 	    ((uint64_t)(incval & 0x3fffff) << 14) |
    115 	    ((uint64_t)(tagwait & 0x1) << 13) |
    116 	    ((uint64_t)(size & 0x3) << 11) |
    117 	    ((uint64_t)(reg & 0x7ff) << 0);
    118 	/*
    119 	 * `scraddr' parameter of IOBDMA operation is actually `index';
    120 	 */
    121 	octfau_op_iobdma((int)((uint32_t)scraddr >> 3) /* XXX */, args);
    122 }
    123 
    124 static inline void
    125 octfau_op_inc_fetch_8(struct octfau_desc *fd, int64_t v)
    126 {
    127 	octfau_op_iobdma_store_data(fd->fd_scroff, v, 0, OCT_FAU_OP_SIZE_64/* XXX */,
    128 	    fd->fd_regno);
    129 }
    130 
    131 static inline int64_t
    132 octfau_op_inc_read_8(struct octfau_desc *fd)
    133 {
    134 	OCTEON_SYNCIOBDMA;
    135 	return octeon_cvmseg_read_8(fd->fd_scroff);
    136 }
    137 
    138 #endif /* _OCTEON_FAUVAR_H_ */
    139