1 /* $NetBSD: bhavar.h,v 1.23 2005/12/11 12:21:26 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace 9 * Simulation Facility, NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 #ifndef _DEV_IC_BHAVAR_H_ 41 #define _DEV_IC_BHAVAR_H_ 42 43 #include <sys/queue.h> 44 45 /* XXX adjust hash for large numbers of CCBs */ 46 #define CCB_HASH_SIZE 32 /* hash table size for phystokv */ 47 #define CCB_HASH_SHIFT 9 48 #define CCB_HASH(x) ((((long)(x))>>CCB_HASH_SHIFT) & (CCB_HASH_SIZE - 1)) 49 50 /* 51 * A CCB allocation group. Each group is a page size. We can find 52 * the allocation group for a CCB by truncating the CCB address to 53 * a page boundary, and the offset from the group's DMA mapping 54 * by taking the offset of the CCB into the page. 55 */ 56 #define BHA_CCBS_PER_GROUP ((PAGE_SIZE - sizeof(bus_dmamap_t)) / \ 57 sizeof(struct bha_ccb)) 58 struct bha_ccb_group { 59 bus_dmamap_t bcg_dmamap; 60 struct bha_ccb bcg_ccbs[1]; /* determined at run-time */ 61 }; 62 63 #define BHA_CCB_GROUP(ccb) \ 64 (struct bha_ccb_group *)(trunc_page((vaddr_t)ccb)) 65 #define BHA_CCB_OFFSET(ccb) ((vaddr_t)(ccb) & PAGE_MASK) 66 67 #define BHA_CCB_SYNC(sc, ccb, ops) \ 68 do { \ 69 struct bha_ccb_group *bcg = BHA_CCB_GROUP((ccb)); \ 70 \ 71 bus_dmamap_sync((sc)->sc_dmat, bcg->bcg_dmamap, \ 72 BHA_CCB_OFFSET(ccb), sizeof(struct bha_ccb), (ops)); \ 73 } while (0) 74 75 /* 76 * Offset in the DMA mapping for mailboxes. 77 * Since all mailboxes are allocated on a single DMA'able memory 78 * due to the hardware limitation, an offset of any mailboxes can be 79 * calculated using same expression. 80 */ 81 #define BHA_MBX_OFFSET(sc, mbx) ((u_long)(mbx) - (u_long)(sc)->sc_mbo) 82 83 #define BHA_MBI_SYNC(sc, mbi, ops) \ 84 do { \ 85 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap_mbox, \ 86 BHA_MBX_OFFSET((sc), (mbi)), sizeof(struct bha_mbx_in), (ops)); \ 87 } while (0) 88 89 #define BHA_MBO_SYNC(sc, mbo, ops) \ 90 do { \ 91 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap_mbox, \ 92 BHA_MBX_OFFSET((sc), (mbo)), sizeof(struct bha_mbx_out), (ops)); \ 93 } while (0) 94 95 struct bha_softc { 96 struct device sc_dev; 97 98 bus_space_tag_t sc_iot; 99 bus_space_handle_t sc_ioh; 100 bus_dma_tag_t sc_dmat; 101 bus_dmamap_t sc_dmamap_mbox; /* maps the mailboxes */ 102 int sc_dmaflags; /* bus-specific dma map flags */ 103 void *sc_ih; 104 105 int sc_scsi_id; /* host adapter SCSI ID */ 106 107 int sc_flags; 108 #define BHAF_WIDE 0x01 /* device is wide */ 109 #define BHAF_DIFFERENTIAL 0x02 /* device is differential */ 110 #define BHAF_ULTRA 0x04 /* device is ultra-scsi */ 111 #define BHAF_TAGGED_QUEUEING 0x08 /* device supports tagged queueing */ 112 #define BHAF_WIDE_LUN 0x10 /* device supported wide lun CCBs */ 113 #define BHAF_STRICT_ROUND_ROBIN 0x20 /* device supports strict RR mode */ 114 115 int sc_max_dmaseg; /* maximum number of DMA segments */ 116 int sc_max_ccbs; /* maximum number of CCBs (HW) */ 117 int sc_cur_ccbs; /* current number of CCBs */ 118 119 int sc_disc_mask; /* mask of targets allowing discnnct */ 120 int sc_ultra_mask; /* mask of targets allowing ultra */ 121 int sc_fast_mask; /* mask of targets allowing fast */ 122 int sc_sync_mask; /* mask of targets allowing sync */ 123 int sc_wide_mask; /* mask of targets allowing wide */ 124 int sc_tag_mask; /* mask of targets allowing t/q'ing */ 125 126 /* 127 * In and Out mailboxes. 128 */ 129 struct bha_mbx_out *sc_mbo; 130 struct bha_mbx_in *sc_mbi; 131 132 struct bha_mbx_out *sc_cmbo; /* Collection Mail Box out */ 133 struct bha_mbx_out *sc_tmbo; /* Target Mail Box out */ 134 135 int sc_mbox_count; /* number of mailboxes */ 136 int sc_mbofull; /* number of full Mail Box Out */ 137 138 struct bha_mbx_in *sc_tmbi; /* Target Mail Box in */ 139 140 struct bha_ccb *sc_ccbhash[CCB_HASH_SIZE]; 141 TAILQ_HEAD(, bha_ccb) sc_free_ccb, 142 sc_waiting_ccb, 143 sc_allocating_ccbs; 144 145 struct scsipi_adapter sc_adapter; 146 struct scsipi_channel sc_channel; 147 148 char sc_model[7], 149 sc_firmware[6]; 150 }; 151 152 struct bha_probe_data { 153 int sc_irq, sc_drq; 154 }; 155 156 int bha_find(bus_space_tag_t, bus_space_handle_t); 157 int bha_inquire_config(bus_space_tag_t, bus_space_handle_t, 158 struct bha_probe_data *); 159 void bha_attach(struct bha_softc *); 160 int bha_info(struct bha_softc *); 161 int bha_intr(void *); 162 163 int bha_disable_isacompat(struct bha_softc *); 164 int bha_probe_inquiry(bus_space_tag_t, bus_space_handle_t, 165 struct bha_probe_data *); 166 167 #endif /* _DEV_IC_BHAVAR_H_ */ 168