1 /* $OpenBSD: cn30xxfau.c,v 1.7 2022/12/28 01:39:21 yasuoka 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 AUTHORS 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 AUTHORS 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 #include <sys/param.h> 30 #include <sys/systm.h> 31 32 #include <machine/octeonvar.h> 33 34 #include <octeon/dev/cn30xxfaureg.h> 35 #include <octeon/dev/cn30xxfauvar.h> 36 37 int64_t cn30xxfau_op_load(uint64_t); 38 void cn30xxfau_op_iobdma(int, uint64_t); 39 void cn30xxfau_op_store(uint64_t, int64_t); 40 int64_t cn30xxfau_op_load_paddr(int, int, int) __unused; 41 void cn30xxfau_op_iobdma_store_data(int, int, int, int, int); 42 void cn30xxfau_op_store_paddr(int, int, int64_t); 43 44 45 /* ---- utilities */ 46 47 int64_t 48 cn30xxfau_op_load(uint64_t args) 49 { 50 paddr_t addr; 51 52 addr = 53 ((uint64_t)1 << 48) | 54 ((uint64_t)(CN30XXFAU_MAJORDID & 0x1f) << 43) | 55 ((uint64_t)(CN30XXFAU_SUBDID & 0x7) << 40) | 56 ((uint64_t)(args & 0xfffffffffULL) << 0); 57 return octeon_xkphys_read_8(addr); 58 } 59 60 void 61 cn30xxfau_op_store(uint64_t args, int64_t value) 62 { 63 paddr_t addr; 64 65 addr = 66 ((uint64_t)1 << 48) | 67 ((uint64_t)(CN30XXFAU_MAJORDID & 0x1f) << 43) | 68 ((uint64_t)(CN30XXFAU_SUBDID & 0x7) << 40) | 69 ((uint64_t)(args & 0xfffffffffULL) << 0); 70 octeon_xkphys_write_8(addr, value); 71 } 72 73 /* ---- operation primitives */ 74 75 /* 76 * 3.4 Fetch-and-Add Operations 77 */ 78 79 /* 3.4.1 Load Operations */ 80 81 /* Load Physical Address for FAU Operations */ 82 83 int64_t 84 cn30xxfau_op_load_paddr(int incval, int tagwait, int reg) 85 { 86 uint64_t args; 87 88 args = 89 ((uint64_t)(incval & 0x3fffff) << 14) | 90 ((uint64_t)(tagwait & 0x1) << 13) | 91 ((uint64_t)(reg & 0x7ff) << 0); 92 return cn30xxfau_op_load(args); 93 } 94 95 /* 3.4.3 Store Operations */ 96 97 /* Store Physical Address for FAU Operations */ 98 99 void 100 cn30xxfau_op_store_paddr(int noadd, int reg, int64_t value) 101 { 102 uint64_t args; 103 104 args = 105 ((uint64_t)(noadd & 0x1) << 13) | 106 ((uint64_t)(reg & 0x7ff) << 0); 107 cn30xxfau_op_store(args, value); 108 } 109 110 /* ---- API */ 111 112 void 113 cn30xxfau_op_init(struct cn30xxfau_desc *fd, size_t scroff, size_t regno) 114 { 115 fd->fd_scroff = scroff; 116 fd->fd_regno = regno; 117 } 118 119 uint64_t 120 cn30xxfau_op_save(struct cn30xxfau_desc *fd) 121 { 122 octeon_synciobdma(); 123 return octeon_cvmseg_read_8(fd->fd_scroff); 124 } 125 126 void 127 cn30xxfau_op_restore(struct cn30xxfau_desc *fd, uint64_t backup) 128 { 129 octeon_cvmseg_write_8(fd->fd_scroff, backup); 130 } 131 132 int64_t 133 cn30xxfau_op_inc_8(struct cn30xxfau_desc *fd, int64_t v) 134 { 135 cn30xxfau_op_iobdma_store_data(fd->fd_scroff, v, 0, OCT_FAU_OP_SIZE_64/* XXX */, 136 fd->fd_regno); 137 octeon_synciobdma(); 138 return octeon_cvmseg_read_8(fd->fd_scroff)/* XXX */; 139 } 140 141 int64_t 142 cn30xxfau_op_incwait_8(struct cn30xxfau_desc *fd, int v) 143 { 144 cn30xxfau_op_iobdma_store_data(fd->fd_scroff, v, 1, OCT_FAU_OP_SIZE_64/* XXX */, 145 fd->fd_regno); 146 octeon_synciobdma(); 147 return octeon_cvmseg_read_8(fd->fd_scroff)/* XXX */; 148 } 149 150 void 151 cn30xxfau_op_add_8(struct cn30xxfau_desc *fd, int64_t v) 152 { 153 cn30xxfau_op_store_paddr(0, fd->fd_regno, v); 154 } 155 156 void 157 cn30xxfau_op_set_8(struct cn30xxfau_desc *fd, int64_t v) 158 { 159 cn30xxfau_op_store_paddr(1, fd->fd_regno, v); 160 } 161