twevar.h revision 1.5
1 /* $NetBSD: twevar.h,v 1.5 2001/01/22 17:32:11 ad 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 /*- 40 * Copyright (c) 2000 Michael Smith 41 * Copyright (c) 2000 BSDi 42 * All rights reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. Redistributions in binary form must reproduce the above copyright 50 * notice, this list of conditions and the following disclaimer in the 51 * documentation and/or other materials provided with the distribution. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * from FreeBSD: twevar.h,v 1.1 2000/05/24 23:35:23 msmith Exp 66 */ 67 68 #ifndef _PCI_TWEVAR_H_ 69 #define _PCI_TWEVAR_H_ 70 71 #include "locators.h" 72 73 #define TWE_MAX_QUEUECNT 129 74 75 /* XXX NBPG */ 76 #if TWE_SG_SIZE > (((MAXPHYS + NBPG - 1) / NBPG) + 1) 77 #define TWE_MAX_SEGS (((MAXPHYS + NBPG - 1) / NBPG) + 1) 78 #else 79 #define TWE_MAX_SEGS TWE_SG_SIZE 80 #endif 81 #define TWE_MAX_XFER ((TWE_MAX_SEGS - 1) * NBPG) 82 83 /* Per-controller state. */ 84 struct twe_softc { 85 struct device sc_dv; 86 bus_space_tag_t sc_iot; 87 bus_space_handle_t sc_ioh; 88 bus_dma_tag_t sc_dmat; 89 bus_dmamap_t sc_dmamap; 90 void *sc_ih; 91 caddr_t sc_cmds; 92 bus_addr_t sc_cmds_paddr; 93 int sc_nccbs; 94 struct twe_ccb *sc_ccbs; 95 SIMPLEQ_HEAD(, twe_ccb) sc_ccb_queue; 96 SLIST_HEAD(, twe_ccb) sc_ccb_freelist; 97 int sc_nunits; 98 u_int sc_dsize[TWE_MAX_UNITS]; 99 }; 100 101 /* Optional per-command context. */ 102 struct twe_context { 103 void (*tx_handler)(struct twe_ccb *, int); 104 void *tx_context; 105 struct device *tx_dv; 106 }; 107 108 /* Command control block. */ 109 struct twe_ccb { 110 union { 111 SIMPLEQ_ENTRY(twe_ccb) simpleq; 112 SLIST_ENTRY(twe_ccb) slist; 113 } ccb_chain; 114 struct twe_cmd *ccb_cmd; 115 int ccb_cmdid; 116 int ccb_flags; 117 void *ccb_data; 118 int ccb_datasize; 119 vaddr_t ccb_abuf; 120 bus_dmamap_t ccb_dmamap_xfer; 121 struct twe_context ccb_tx; 122 }; 123 #define TWE_CCB_DATA_IN 0x01 /* Map describes inbound xfer */ 124 #define TWE_CCB_DATA_OUT 0x02 /* Map describes outbound xfer */ 125 #define TWE_CCB_COMPLETE 0x04 /* Command completed */ 126 #define TWE_CCB_ACTIVE 0x08 /* Command active */ 127 #define TWE_CCB_PARAM 0x10 /* For parameter retrieval */ 128 #define TWE_CCB_ALLOCED 0x20 /* CCB allocated */ 129 130 struct twe_attach_args { 131 int twea_unit; 132 }; 133 134 #define tweacf_unit cf_loc[TWECF_UNIT] 135 136 int twe_ccb_alloc(struct twe_softc *, struct twe_ccb **, int); 137 void twe_ccb_enqueue(struct twe_softc *sc, struct twe_ccb *ccb); 138 void twe_ccb_free(struct twe_softc *sc, struct twe_ccb *); 139 int twe_ccb_map(struct twe_softc *, struct twe_ccb *); 140 int twe_ccb_poll(struct twe_softc *, struct twe_ccb *, int); 141 int twe_ccb_submit(struct twe_softc *, struct twe_ccb *); 142 void twe_ccb_unmap(struct twe_softc *, struct twe_ccb *); 143 144 #endif /* !_PCI_TWEVAR_H_ */ 145
Indexes created Tue Sep 23 14:10:03 GMT 2025