iopvar.h revision 1.2.2.2
1 /* $NetBSD: iopvar.h,v 1.2.2.2 2000/11/22 17:34:20 bouyer Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _I2O_IOPVAR_H_ 40 #define _I2O_IOPVAR_H_ 41 42 /* Per-IOP statistics; not particularly useful at the moment. */ 43 struct iop_stat { 44 int is_cur_swqueue; 45 int is_peak_swqueue; 46 int is_cur_hwqueue; 47 int is_peak_hwqueue; 48 int64_t is_requests; 49 int64_t is_bytes; 50 }; 51 52 #ifdef _KERNEL 53 54 #include "locators.h" 55 56 /* XXX. Tunables. */ 57 #define IOP_MAX_INITIATORS 32 58 #define IOP_MAX_PI_QUEUECNT 128 59 #define IOP_MAX_HW_QUEUECNT 256 60 #define IOP_MAX_HW_REPLYCNT 128 61 62 /* 63 * XXX The following should be adjusted if and when: 64 * 65 * o MAXPHYS exceeds 64kB. 66 * o A new message or reply is defined in i2o.h. 67 * 68 * As it stands, these make for a message frame of 200 bytes. 69 */ 70 #define IOP_MAX_SGL_SIZE 132 /* Maximum S/G list size */ 71 #define IOP_MAX_BASE_MSG_SIZE 68 /* Maximum base message size */ 72 #define IOP_MAX_XFER 65536 /* Maximum transfer size */ 73 #define IOP_MAX_MSG_XFERS 3 /* Maximum transfer count per msg */ 74 75 #define IOP_MAX_SGL_ENTRIES (IOP_MAX_SGL_SIZE / 8) 76 #define IOP_MAX_MSG_SIZE (IOP_MAX_BASE_MSG_SIZE + IOP_MAX_SGL_SIZE) 77 78 /* 79 * Transfer descriptor. 80 */ 81 struct iop_xfer { 82 bus_dmamap_t ix_map; 83 u_int ix_size; 84 u_int ix_flags; 85 }; 86 #define IX_IN 0x0001 /* Data transfer from IOP */ 87 #define IX_OUT 0x0002 /* Data transfer to IOP */ 88 89 /* 90 * Message wrapper. 91 */ 92 struct iop_msg { 93 SIMPLEQ_ENTRY(iop_msg) im_queue; /* Next queued message */ 94 TAILQ_ENTRY(iop_msg) im_hash; /* Hash chain */ 95 u_int im_flags; /* Control flags */ 96 u_int im_tctx; /* Transaction context */ 97 u_int im_tid; /* TID we're addressing */ 98 void *im_dvcontext; /* Un*x device context */ 99 u_int32_t im_msg[IOP_MAX_MSG_SIZE / sizeof(u_int32_t)]; 100 struct iop_xfer im_xfer[IOP_MAX_MSG_XFERS]; 101 }; 102 103 #define IM_SYSMASK 0x00ff 104 #define IM_REPLIED 0x0001 /* Message has been replied to */ 105 #define IM_ALLOCED 0x0002 /* This message wrapper is allocated */ 106 #define IM_WAITING 0x0004 /* Somebody is waiting for reply */ 107 #define IM_SGLOFFADJ 0x0008 /* S/G list offset adjusted */ 108 #define IM_DISCARD 0x0010 /* Discard message wrapper once sent */ 109 110 #define IM_USERMASK 0xff00 111 #define IM_NOWAIT 0x0100 /* Don't sleep when processing */ 112 #define IM_NOICTX 0x0200 /* No initiator context field */ 113 #define IM_NOINTR 0x0400 /* Don't interrupt when complete */ 114 115 struct iop_initiator { 116 struct device *ii_dv; 117 void (*ii_intr)(struct device *, struct iop_msg *, void *); 118 int ii_flags; 119 int ii_ictx; 120 }; 121 #define II_DISCARD 0x0001 /* Don't track state; discard msg wrappers */ 122 123 #define IOP_ICTX 0 124 125 /* 126 * Per-IOP context. 127 */ 128 struct iop_softc { 129 struct device sc_dv; /* generic device data */ 130 bus_space_handle_t sc_ioh; /* bus space handle */ 131 bus_space_tag_t sc_iot; /* bus space tag */ 132 bus_dma_tag_t sc_dmat; /* bus DMA tag */ 133 void *sc_ih; /* interrupt handler cookie */ 134 135 struct i2o_hrt *sc_hrt; /* hardware resource table */ 136 struct i2o_lct *sc_lct; /* logical configuration table */ 137 int sc_nlctent; /* number of LCT entries */ 138 u_int8_t *sc_lctmap; /* lct map (per-entry flags) */ 139 struct i2o_status sc_status; /* status */ 140 struct iop_stat sc_stat; /* counters */ 141 int sc_flags; /* IOP-wide flags */ 142 int sc_maxreplycnt; /* reply queue size */ 143 144 SIMPLEQ_HEAD(,iop_msg) sc_queue;/* software queue */ 145 int sc_maxqueuecnt; /* maximum # of msgs on h/w queue */ 146 147 /* 148 * Reply queue. 149 */ 150 bus_dmamap_t sc_rep_dmamap; 151 int sc_rep_size; 152 bus_addr_t sc_rep_phys; 153 caddr_t sc_rep; 154 155 /* 156 * Initiator table. 157 */ 158 struct iop_initiator *sc_itab[IOP_MAX_INITIATORS]; 159 160 /* 161 * The following are used only when posting the system table to 162 * the IOP. They describe PCI memory and I/O port regions. 163 */ 164 bus_addr_t sc_memaddr; 165 int sc_memsize; 166 int sc_ioaddr; 167 int sc_iosize; 168 }; 169 170 #define IOP_OPEN 0x01 /* Device interface open */ 171 #define IOP_LCTLKHELD 0x02 /* sc_lct lock held */ 172 #define IOP_LCTLKWANTED 0x04 /* sc_lct lock wanted */ 173 #define IOP_DRAIN 0x08 /* Draining IOP */ 174 175 #define IOP_LCTMAP_INUSE 0x01 /* target is in use */ 176 177 struct iop_attach_args { 178 int ia_class; /* device class */ 179 int ia_tid; /* target ID */ 180 }; 181 #define iopcf_tid cf_loc[IOPCF_TID] /* TID */ 182 183 int iop_init(struct iop_softc *, const char *); 184 int iop_intr(void *); 185 int iop_params_get(struct iop_softc *, int, int, void *, int); 186 int iop_simple_cmd(struct iop_softc *, int, int, int); 187 void iop_strvis(const char *, int, char *, int); 188 189 int iop_initiator_register(struct iop_softc *, struct iop_initiator *); 190 void iop_initiator_unregister(struct iop_softc *, struct iop_initiator *); 191 192 int iop_lct_get(struct iop_softc *); 193 int iop_lct_lock(struct iop_softc *); 194 void iop_lct_unlock(struct iop_softc *); 195 196 int iop_msg_alloc(struct iop_softc *, struct iop_initiator *, 197 struct iop_msg **, int); 198 int iop_msg_enqueue(struct iop_softc *, struct iop_msg *); 199 void iop_msg_free(struct iop_softc *, struct iop_initiator *, 200 struct iop_msg *); 201 int iop_msg_map(struct iop_softc *, struct iop_msg *, void *, int, int); 202 int iop_msg_send(struct iop_softc *, struct iop_msg *, int); 203 void iop_msg_unmap(struct iop_softc *, struct iop_msg *); 204 int iop_msg_wait(struct iop_softc *, struct iop_msg *, int); 205 206 int iop_tid_claim(struct iop_softc *, int, int, int); 207 int iop_tid_inuse(struct iop_softc *, int); 208 int iop_tid_lct_index(struct iop_softc *, int); 209 void iop_tid_markallused(struct iop_softc *, int); 210 211 #endif /* _KERNEL */ 212 213 #endif /* !_I2O_IOPVAR_H_ */ 214
Indexes created Thu Oct 02 14:10:14 GMT 2025