1 /* $NetBSD: bhavar.h,v 1.21 2001/05/03 20:34:54 ross 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 #include <sys/queue.h> 41 42 /* XXX adjust hash for large numbers of CCBs */ 43 #define CCB_HASH_SIZE 32 /* hash table size for phystokv */ 44 #define CCB_HASH_SHIFT 9 45 #define CCB_HASH(x) ((((long)(x))>>CCB_HASH_SHIFT) & (CCB_HASH_SIZE - 1)) 46 47 /* 48 * A CCB allocation group. Each group is a page size. We can find 49 * the allocation group for a CCB by truncating the CCB address to 50 * a page boundary, and the offset from the group's DMA mapping 51 * by taking the offset of the CCB into the page. 52 */ 53 #define BHA_CCBS_PER_GROUP ((PAGE_SIZE - sizeof(bus_dmamap_t)) / \ 54 sizeof(struct bha_ccb)) 55 struct bha_ccb_group { 56 bus_dmamap_t bcg_dmamap; 57 struct bha_ccb bcg_ccbs[1]; /* determined at run-time */ 58 }; 59 60 #define BHA_CCB_GROUP(ccb) \ 61 (struct bha_ccb_group *)(trunc_page((vaddr_t)ccb)) 62 #define BHA_CCB_OFFSET(ccb) ((vaddr_t)(ccb) & PAGE_MASK) 63 64 #define BHA_CCB_SYNC(sc, ccb, ops) \ 65 do { \ 66 struct bha_ccb_group *bcg = BHA_CCB_GROUP((ccb)); \ 67 \ 68 bus_dmamap_sync((sc)->sc_dmat, bcg->bcg_dmamap, \ 69 BHA_CCB_OFFSET(ccb), sizeof(struct bha_ccb), (ops)); \ 70 } while (0) 71 72 /* 73 * Offset in the DMA mapping for mailboxes. 74 * Since all mailboxes are allocated on a single DMA'able memory 75 * due to the hardware limitation, an offset of any mailboxes can be 76 * calculated using same expression. 77 */ 78 #define BHA_MBX_OFFSET(sc, mbx) ((u_long)(mbx) - (u_long)(sc)->sc_mbo) 79 80 #define BHA_MBI_SYNC(sc, mbi, ops) \ 81 do { \ 82 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap_mbox, \ 83 BHA_MBX_OFFSET((sc), (mbi)), sizeof(struct bha_mbx_in), (ops)); \ 84 } while (0) 85 86 #define BHA_MBO_SYNC(sc, mbo, ops) \ 87 do { \ 88 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_dmamap_mbox, \ 89 BHA_MBX_OFFSET((sc), (mbo)), sizeof(struct bha_mbx_out), (ops)); \ 90 } while (0) 91 92 struct bha_softc { 93 struct device sc_dev; 94 95 bus_space_tag_t sc_iot; 96 bus_space_handle_t sc_ioh; 97 bus_dma_tag_t sc_dmat; 98 bus_dmamap_t sc_dmamap_mbox; /* maps the mailboxes */ 99 int sc_dmaflags; /* bus-specific dma map flags */ 100 void *sc_ih; 101 102 int sc_scsi_id; /* host adapter SCSI ID */ 103 104 int sc_flags; 105 #define BHAF_WIDE 0x01 /* device is wide */ 106 #define BHAF_DIFFERENTIAL 0x02 /* device is differential */ 107 #define BHAF_ULTRA 0x04 /* device is ultra-scsi */ 108 #define BHAF_TAGGED_QUEUEING 0x08 /* device supports tagged queueing */ 109 #define BHAF_WIDE_LUN 0x10 /* device supported wide lun CCBs */ 110 #define BHAF_STRICT_ROUND_ROBIN 0x20 /* device supports strict RR mode */ 111 112 int sc_max_dmaseg; /* maximum number of DMA segments */ 113 int sc_max_ccbs; /* maximum number of CCBs (HW) */ 114 int sc_cur_ccbs; /* current number of CCBs */ 115 116 int sc_disc_mask; /* mask of targets allowing discnnct */ 117 int sc_ultra_mask; /* mask of targets allowing ultra */ 118 int sc_fast_mask; /* mask of targets allowing fast */ 119 int sc_sync_mask; /* mask of targets allowing sync */ 120 int sc_wide_mask; /* mask of targets allowing wide */ 121 int sc_tag_mask; /* mask of targets allowing t/q'ing */ 122 123 /* 124 * In and Out mailboxes. 125 */ 126 struct bha_mbx_out *sc_mbo; 127 struct bha_mbx_in *sc_mbi; 128 129 struct bha_mbx_out *sc_cmbo; /* Collection Mail Box out */ 130 struct bha_mbx_out *sc_tmbo; /* Target Mail Box out */ 131 132 int sc_mbox_count; /* number of mailboxes */ 133 int sc_mbofull; /* number of full Mail Box Out */ 134 135 struct bha_mbx_in *sc_tmbi; /* Target Mail Box in */ 136 137 struct bha_ccb *sc_ccbhash[CCB_HASH_SIZE]; 138 TAILQ_HEAD(, bha_ccb) sc_free_ccb, 139 sc_waiting_ccb, 140 sc_allocating_ccbs; 141 142 struct scsipi_adapter sc_adapter; 143 struct scsipi_channel sc_channel; 144 145 char sc_model[7], 146 sc_firmware[6]; 147 }; 148 149 struct bha_probe_data { 150 int sc_irq, sc_drq; 151 }; 152 153 int bha_find __P((bus_space_tag_t, bus_space_handle_t)); 154 int bha_inquire_config __P((bus_space_tag_t, bus_space_handle_t, 155 struct bha_probe_data *)); 156 void bha_attach __P((struct bha_softc *)); 157 int bha_info __P((struct bha_softc *)); 158 int bha_intr __P((void *)); 159 160 int bha_disable_isacompat __P((struct bha_softc *)); 161 int bha_probe_inquiry __P((bus_space_tag_t, bus_space_handle_t, 162 struct bha_probe_data *)); 163