Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/ninjascsi32var.h
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1 /* $NetBSD: ninjascsi32var.h,v 1.6 2008/07/09 19:08:44 joerg Exp $ */ 2 3 /*- 4 * Copyright (c) 2004, 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by ITOH Yasufumi. 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 _NJSC32VAR_H_ 33 #define _NJSC32VAR_H_ 34 35 typedef unsigned njsc32_model_t; 36 #define NJSC32_MODEL_MASK 0xff 37 #define NJSC32_MODEL_INVALID 0 38 #define NJSC32_MODEL_32BI 1 39 #define NJSC32_MODEL_32UDE 2 40 #define NJSC32_FLAG_DUALEDGE 0x100 /* supports DualEdge */ 41 42 /* 43 * time parameters (25us per unit?) 44 */ 45 #define NJSC32_SEL_TIMEOUT_TIME 20000 /* selection timeout (500ms) */ 46 #define NJSC32_ARBITRATION_RETRY_TIME 4 /* 100us */ 47 48 /* in microseconds */ 49 #define NJSC32_REQ_TIMEOUT 10000 /* 10ms */ 50 #define NJSC32_RESET_HOLD_TIME 26 /* 25us min */ 51 52 /* 53 * DMA page 54 */ 55 #ifdef NJSC32_AUTOPARAM 56 #define NJSC32_NUM_CMD 14 /* # simultaneous commands */ 57 #else 58 #define NJSC32_NUM_CMD 15 /* # simultaneous commands */ 59 #endif 60 #define NJSC32_NUM_SG 17 /* # scatter/gather table entries per command */ 61 62 struct njsc32_dma_page { 63 /* 64 * scatter/gather transfer table 65 */ 66 struct njsc32_sgtable dp_sg[NJSC32_NUM_CMD][NJSC32_NUM_SG]; 67 #define NJSC32_SIZE_SGT \ 68 (sizeof(struct njsc32_sgtable) * NJSC32_NUM_SG) 69 70 #ifdef NJSC32_AUTOPARAM 71 /* 72 * device reads parameters from this structure (autoparam) 73 */ 74 struct njsc32_autoparam dp_ap; 75 #endif 76 }; 77 78 /* per command */ 79 struct njsc32_cmd { 80 TAILQ_ENTRY(njsc32_cmd) c_q; 81 struct njsc32_softc *c_sc; 82 83 /* on transfer */ 84 struct scsipi_xfer *c_xs; 85 struct njsc32_target *c_target; 86 struct njsc32_lu *c_lu; 87 u_int32_t c_datacnt; /* I/O buffer length */ 88 89 /* command status */ 90 int c_flags; 91 #define NJSC32_CMD_DMA_MAPPED 0x01 92 #define NJSC32_CMD_TAGGED 0x02 93 #define NJSC32_CMD_TAGGED_HEAD 0x04 94 95 /* SCSI pointer */ 96 u_int32_t c_dp_cur; /* current (or active) data pointer */ 97 u_int32_t c_dp_saved; /* saved data pointer */ 98 u_int32_t c_dp_max; /* max value of data pointer */ 99 100 /* last loaded scatter/gather table */ 101 unsigned c_sgoffset; /* # skip entries */ 102 u_int32_t c_sgfixcnt; /* # skip bytes in the top entry */ 103 104 /* command start/restart parameter */ 105 u_int8_t c_msg_identify; /* Identify message */ 106 u_int16_t c_xferctl; 107 u_int32_t c_sgtdmaaddr; 108 109 /* DMA resource */ 110 struct njsc32_sgtable *c_sgt; /* for host */ 111 bus_addr_t c_sgt_dma; /* for device */ 112 #define NJSC32_CMD_DMAADDR_SGT(cmd, n) \ 113 ((cmd)->c_sgt_dma + sizeof(struct njsc32_sgtable) * (n)) 114 bus_dmamap_t c_dmamap_xfer; 115 }; 116 117 /* -1 for unaligned acccess */ 118 #define NJSC32_MAX_XFER ((NJSC32_NUM_SG - 1) << PGSHIFT) 119 120 struct njsc32_softc { 121 device_t sc_dev; 122 123 /* device spec */ 124 njsc32_model_t sc_model; 125 126 int sc_clk; /* one of following */ 127 #define NJSC32_CLK_40M NJSC32_CLOCK_DIV_4 /* 20MB/s */ 128 #define NJSC32_CLK_20M NJSC32_CLOCK_DIV_2 /* 10MB/s */ 129 #define NJSC32_CLK_PCI_33M NJSC32_CLOCK_PCICLK /* 16.6MB/s */ 130 131 /* device register */ 132 bus_space_tag_t sc_regt; 133 bus_space_handle_t sc_regh; 134 135 unsigned sc_flags; 136 #define NJSC32_IO_MAPPED 0x00000001 137 #define NJSC32_MEM_MAPPED 0x00000002 138 #define NJSC32_CMDPG_MAPPED 0x00000004 139 #define NJSC32_CANNOT_SUPPLY_TERMPWR 0x00000100 140 141 /* 142 * controller state 143 */ 144 enum njsc32_stat { 145 NJSC32_STAT_IDLE, 146 NJSC32_STAT_ARBIT, /* initiator started arbitration */ 147 NJSC32_STAT_CONNECT, /* command is active (connection) */ 148 NJSC32_STAT_RESEL, /* a target did Reselection */ 149 NJSC32_STAT_RESEL_LUN, /* received Identify message */ 150 NJSC32_STAT_RECONNECT, /* command is active (reconnection) */ 151 NJSC32_STAT_RESET, /* resetting bus */ 152 NJSC32_STAT_RESET1, /* waiting for bus reset release */ 153 NJSC32_STAT_RESET2, /* waiting for bus reset release */ 154 NJSC32_STAT_DETACH /* detaching */ 155 } sc_stat; 156 157 /* interrupt handle */ 158 void *sc_ih; 159 160 /* for DMA */ 161 bus_dma_tag_t sc_dmat; 162 struct njsc32_dma_page *sc_cmdpg; /* scatter/gather table page */ 163 #if 0 164 bus_addr_t sc_cmdpg_dma; 165 #endif 166 bus_dma_segment_t sc_cmdpg_seg; 167 bus_dmamap_t sc_dmamap_cmdpg; 168 int sc_cmdpg_nsegs; 169 170 #ifdef NJSC32_AUTOPARAM 171 u_int32_t sc_ap_dma; /* autoparam DMA address */ 172 #endif 173 174 /* for monitoring bus reset */ 175 struct callout sc_callout; 176 177 /* 178 * command control structure 179 */ 180 struct njsc32_cmd sc_cmds[NJSC32_NUM_CMD]; 181 TAILQ_HEAD(njsc32_cmd_head, njsc32_cmd) 182 sc_freecmd, /* free list */ 183 sc_reqcmd; /* waiting commands */ 184 185 struct njsc32_cmd *sc_curcmd; /* currently active command */ 186 int sc_ncmd; /* total # commands available */ 187 int sc_nusedcmds; /* # used commands */ 188 189 /* reselection */ 190 int sc_reselid, sc_resellun; 191 192 /* message in buffer */ 193 #define NJSC32_MSGIN_LEN 20 194 u_int8_t sc_msginbuf[NJSC32_MSGIN_LEN]; 195 int sc_msgincnt; 196 197 /* message out buffer */ 198 #define NJSC32_MSGOUT_LEN 16 199 u_int8_t sc_msgout[NJSC32_MSGOUT_LEN]; 200 size_t sc_msgoutlen; 201 size_t sc_msgoutidx; 202 203 /* sync timing table */ 204 const struct njsc32_sync_param { 205 u_int8_t sp_period; /* transfer period */ 206 u_int8_t sp_ackw; /* ACK width parameter */ 207 u_int8_t sp_sample; /* sampling period */ 208 } *sc_synct; 209 int sc_sync_max; 210 211 /* for scsipi layer */ 212 struct device *sc_scsi; 213 struct scsipi_adapter sc_adapter; 214 struct scsipi_channel sc_channel; 215 216 /* per-target */ 217 struct njsc32_target { 218 enum njsc32_tarst { 219 NJSC32_TARST_DONE, /* negotiation done */ 220 NJSC32_TARST_INIT, 221 NJSC32_TARST_DE, /* negotiating DualEdge */ 222 NJSC32_TARST_WDTR, /* negotiating width */ 223 NJSC32_TARST_SDTR, /* negotiating sync */ 224 NJSC32_TARST_ASYNC /* negotiating async */ 225 } t_state; 226 int t_flags; 227 #define NJSC32_TARF_TAG 0x0001 /* tagged queueing is enabled */ 228 #define NJSC32_TARF_SYNC 0x0002 /* negotiate for sync transfer */ 229 #define NJSC32_TARF_DE 0x0004 /* negotiate for DualEdge transfer */ 230 231 int t_syncperiod; 232 int t_syncoffset; 233 234 u_int8_t t_sync; 235 u_int8_t t_ackwidth; 236 u_int8_t t_targetid; /* initiator and target id */ 237 u_int8_t t_sample; 238 239 u_int16_t t_xferctl; /* DualEdge flag */ 240 241 /* per logical unit */ 242 struct njsc32_lu { 243 /* 244 * disconnected commands 245 */ 246 struct njsc32_cmd *lu_cmd; /* untagged command */ 247 struct njsc32_cmd_head lu_q; /* tagged commands */ 248 } t_lus[NJSC32_NLU]; 249 } sc_targets[NJSC32_MAX_TARGET_ID + 1]; 250 }; 251 252 #ifdef _KERNEL 253 void njsc32_attach(struct njsc32_softc *); 254 int njsc32_detach(struct njsc32_softc *, int); 255 int njsc32_intr(void *); 256 #endif 257 258 #endif /* _NJSC32VAR_H_ */
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