1 /* 2 * Copyright (c) 2008-2016 Solarflare Communications Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 21 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 22 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 23 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 24 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * The views and conclusions contained in the software and documentation are 27 * those of the authors and should not be interpreted as representing official 28 * policies, either expressed or implied, of the FreeBSD Project. 29 */ 30 31 #include <sys/types.h> 32 #include <sys/ddi.h> 33 #include <sys/sunddi.h> 34 35 #include "sfxge.h" 36 37 void 38 sfxge_sram_init(sfxge_t *sp) 39 { 40 sfxge_sram_t *ssp = &(sp->s_sram); 41 dev_info_t *dip = sp->s_dip; 42 char name[MAXNAMELEN]; 43 44 ASSERT3U(ssp->ss_state, ==, SFXGE_SRAM_UNINITIALIZED); 45 46 mutex_init(&(ssp->ss_lock), NULL, MUTEX_DRIVER, NULL); 47 48 (void) snprintf(name, MAXNAMELEN - 1, "%s%d_sram", ddi_driver_name(dip), 49 ddi_get_instance(dip)); 50 ssp->ss_buf_tbl_map = rmallocmap_wait(EFX_BUF_TBL_SIZE); 51 rmfree(ssp->ss_buf_tbl_map, EFX_BUF_TBL_SIZE - 1, 1); 52 ssp->ss_state = SFXGE_SRAM_INITIALIZED; 53 } 54 55 int 56 sfxge_sram_buf_tbl_alloc(sfxge_t *sp, size_t n, uint32_t *idp) 57 { 58 sfxge_sram_t *ssp = &(sp->s_sram); 59 unsigned long id; 60 int rc; 61 62 mutex_enter(&(ssp->ss_lock)); 63 64 ASSERT(ssp->ss_state != SFXGE_SRAM_UNINITIALIZED); 65 66 if ((id = rmalloc(ssp->ss_buf_tbl_map, n)) == 0) { 67 rc = ENOSPC; 68 goto fail1; 69 } 70 *idp = (uint32_t)id - 1; 71 mutex_exit(&(ssp->ss_lock)); 72 73 return (0); 74 75 fail1: 76 DTRACE_PROBE1(fail1, int, rc); 77 78 mutex_exit(&(ssp->ss_lock)); 79 80 return (rc); 81 } 82 83 int 84 sfxge_sram_start(sfxge_t *sp) 85 { 86 sfxge_sram_t *ssp = &(sp->s_sram); 87 88 mutex_enter(&(ssp->ss_lock)); 89 90 ASSERT3U(ssp->ss_state, ==, SFXGE_SRAM_INITIALIZED); 91 ASSERT3U(ssp->ss_count, ==, 0); 92 93 ssp->ss_state = SFXGE_SRAM_STARTED; 94 95 mutex_exit(&(ssp->ss_lock)); 96 97 return (0); 98 } 99 100 int 101 sfxge_sram_buf_tbl_set(sfxge_t *sp, uint32_t id, efsys_mem_t *esmp, 102 size_t n) 103 { 104 sfxge_sram_t *ssp = &(sp->s_sram); 105 int rc; 106 107 mutex_enter(&(ssp->ss_lock)); 108 109 ASSERT3U(ssp->ss_state, ==, SFXGE_SRAM_STARTED); 110 111 if ((rc = efx_sram_buf_tbl_set(sp->s_enp, id, esmp, n)) != 0) 112 goto fail1; 113 114 ssp->ss_count += n; 115 116 mutex_exit(&(ssp->ss_lock)); 117 118 return (0); 119 120 fail1: 121 DTRACE_PROBE1(fail1, int, rc); 122 123 mutex_exit(&(ssp->ss_lock)); 124 125 return (rc); 126 } 127 128 void 129 sfxge_sram_buf_tbl_clear(sfxge_t *sp, uint32_t id, size_t n) 130 { 131 sfxge_sram_t *ssp = &(sp->s_sram); 132 133 mutex_enter(&(ssp->ss_lock)); 134 135 ASSERT3U(ssp->ss_state, ==, SFXGE_SRAM_STARTED); 136 137 ASSERT3U(ssp->ss_count, >=, n); 138 ssp->ss_count -= n; 139 140 efx_sram_buf_tbl_clear(sp->s_enp, id, n); 141 142 mutex_exit(&(ssp->ss_lock)); 143 } 144 145 void 146 sfxge_sram_stop(sfxge_t *sp) 147 { 148 sfxge_sram_t *ssp = &(sp->s_sram); 149 150 mutex_enter(&(ssp->ss_lock)); 151 152 ASSERT3U(ssp->ss_state, ==, SFXGE_SRAM_STARTED); 153 ASSERT3U(ssp->ss_count, ==, 0); 154 155 ssp->ss_state = SFXGE_SRAM_INITIALIZED; 156 157 mutex_exit(&(ssp->ss_lock)); 158 } 159 160 void 161 sfxge_sram_buf_tbl_free(sfxge_t *sp, uint32_t id, size_t n) 162 { 163 sfxge_sram_t *ssp = &(sp->s_sram); 164 165 mutex_enter(&(ssp->ss_lock)); 166 167 ASSERT(ssp->ss_state != SFXGE_SRAM_UNINITIALIZED); 168 169 rmfree(ssp->ss_buf_tbl_map, n, (unsigned long)id + 1); 170 171 mutex_exit(&(ssp->ss_lock)); 172 } 173 174 void 175 sfxge_sram_fini(sfxge_t *sp) 176 { 177 sfxge_sram_t *ssp = &(sp->s_sram); 178 179 ASSERT3U(ssp->ss_state, ==, SFXGE_SRAM_INITIALIZED); 180 181 rmfreemap(ssp->ss_buf_tbl_map); 182 ssp->ss_buf_tbl_map = NULL; 183 184 mutex_destroy(&(ssp->ss_lock)); 185 186 ssp->ss_state = SFXGE_SRAM_UNINITIALIZED; 187 } 188