1 /* $NetBSD: bhavar.h,v 1.25 2012/10/27 17:18:19 chs 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef _DEV_IC_BHAVAR_H_ 34 #define _DEV_IC_BHAVAR_H_ 35 36 #include <sys/queue.h> 37 38 /* XXX adjust hash for large numbers of CCBs */ 39 #define CCB_HASH_SIZE 32 /* hash table size for phystokv */ 40 #define CCB_HASH_SHIFT 9 41 #define CCB_HASH(x) ((((long)(x))>>CCB_HASH_SHIFT) & (CCB_HASH_SIZE - 1)) 42 43 /* 44 * A CCB allocation group. Each group is a page size. We can find 45 * the allocation group for a CCB by truncating the CCB address to 46 * a page boundary, and the offset from the group's DMA mapping 47 * by taking the offset of the CCB into the page. 48 */ 49 #define BHA_CCBS_PER_GROUP ((PAGE_SIZE - sizeof(bus_dmamap_t)) / \ 50 sizeof(struct bha_ccb)) 51 struct bha_ccb_group { 52 bus_dmamap_t bcg_dmamap; 53 struct bha_ccb bcg_ccbs[1]; /* determined at run-time */ 54 }; 55 56 #define BHA_CCB_GROUP(ccb) \ 57 (struct bha_ccb_group *)(trunc_page((vaddr_t)ccb)) 58 #define BHA_CCB_OFFSET(ccb) ((vaddr_t)(ccb) & PAGE_MASK) 59 60 #define BHA_CCB_SYNC(sc, ccb, ops) \ 61 do { \ 62 struct bha_ccb_group *bcg = BHA_CCB_GROUP((ccb)); \ 63 \ 64 bus_dmamap_sync((sc)->sc_dmat, bcg->bcg_dmamap, \ 65 BHA_CCB_OFFSET(ccb), sizeof(struct bha_ccb), (ops)); \ 66 } while (0) 67 68 /* 69 * Offset in the DMA mapping for mailboxes. 70 * Since all mailboxes are allocated on a single DMA'able memory 71 * due to the hardware limitation, an offset of any mailboxes can be 72 * calculated using same expression. 73 */ 74 #define BHA_MBX_OFFSET(sc, mbx) ((u_long)(mbx) - (u_long)(sc)->sc_mbo) 75 76 #define BHA_MBI_SYNC(sc, mbi, ops) \ 77 do { \ 78 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap_mbox, \ 79 BHA_MBX_OFFSET((sc), (mbi)), sizeof(struct bha_mbx_in), (ops)); \ 80 } while (0) 81 82 #define BHA_MBO_SYNC(sc, mbo, ops) \ 83 do { \ 84 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap_mbox, \ 85 BHA_MBX_OFFSET((sc), (mbo)), sizeof(struct bha_mbx_out), (ops)); \ 86 } while (0) 87 88 struct bha_softc { 89 device_t sc_dev; 90 91 bus_space_tag_t sc_iot; 92 bus_space_handle_t sc_ioh; 93 bus_dma_tag_t sc_dmat; 94 bus_dmamap_t sc_dmamap_mbox; /* maps the mailboxes */ 95 int sc_dmaflags; /* bus-specific dma map flags */ 96 void *sc_ih; 97 98 int sc_scsi_id; /* host adapter SCSI ID */ 99 100 int sc_flags; 101 #define BHAF_WIDE 0x01 /* device is wide */ 102 #define BHAF_DIFFERENTIAL 0x02 /* device is differential */ 103 #define BHAF_ULTRA 0x04 /* device is ultra-scsi */ 104 #define BHAF_TAGGED_QUEUEING 0x08 /* device supports tagged queueing */ 105 #define BHAF_WIDE_LUN 0x10 /* device supported wide lun CCBs */ 106 #define BHAF_STRICT_ROUND_ROBIN 0x20 /* device supports strict RR mode */ 107 108 int sc_max_dmaseg; /* maximum number of DMA segments */ 109 int sc_max_ccbs; /* maximum number of CCBs (HW) */ 110 int sc_cur_ccbs; /* current number of CCBs */ 111 112 int sc_disc_mask; /* mask of targets allowing discnnct */ 113 int sc_ultra_mask; /* mask of targets allowing ultra */ 114 int sc_fast_mask; /* mask of targets allowing fast */ 115 int sc_sync_mask; /* mask of targets allowing sync */ 116 int sc_wide_mask; /* mask of targets allowing wide */ 117 int sc_tag_mask; /* mask of targets allowing t/q'ing */ 118 119 /* 120 * In and Out mailboxes. 121 */ 122 struct bha_mbx_out *sc_mbo; 123 struct bha_mbx_in *sc_mbi; 124 125 struct bha_mbx_out *sc_cmbo; /* Collection Mail Box out */ 126 struct bha_mbx_out *sc_tmbo; /* Target Mail Box out */ 127 128 int sc_mbox_count; /* number of mailboxes */ 129 int sc_mbofull; /* number of full Mail Box Out */ 130 131 struct bha_mbx_in *sc_tmbi; /* Target Mail Box in */ 132 133 struct bha_ccb *sc_ccbhash[CCB_HASH_SIZE]; 134 TAILQ_HEAD(, bha_ccb) sc_free_ccb, 135 sc_waiting_ccb, 136 sc_allocating_ccbs; 137 138 struct scsipi_adapter sc_adapter; 139 struct scsipi_channel sc_channel; 140 141 char sc_model[7], 142 sc_firmware[6]; 143 }; 144 145 struct bha_probe_data { 146 int sc_irq, sc_drq; 147 }; 148 149 int bha_find(bus_space_tag_t, bus_space_handle_t); 150 int bha_inquire_config(bus_space_tag_t, bus_space_handle_t, 151 struct bha_probe_data *); 152 void bha_attach(struct bha_softc *); 153 int bha_info(struct bha_softc *); 154 int bha_intr(void *); 155 156 int bha_disable_isacompat(struct bha_softc *); 157 int bha_probe_inquiry(bus_space_tag_t, bus_space_handle_t, 158 struct bha_probe_data *); 159 160 #endif /* _DEV_IC_BHAVAR_H_ */ 161
Indexes created Sat Sep 20 22:09:52 GMT 2025