1 /* $NetBSD: ahavar.h,v 1.11 2001/04/25 17:53:30 bouyer Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 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 /* 43 * Mail box defs etc. 44 * these could be bigger but we need the aha_softc to fit on a single page.. 45 */ 46 #define AHA_MBX_SIZE 16 /* mail box size (MAX 255 MBxs) */ 47 /* don't need that many really */ 48 #define AHA_CCB_MAX 16 /* store up to 16 CCBs at one time */ 49 #define CCB_HASH_SIZE 16 /* hash table size for phystokv */ 50 #define CCB_HASH_SHIFT 9 51 #define CCB_HASH(x) ((((long)(x))>>CCB_HASH_SHIFT) & (CCB_HASH_SIZE - 1)) 52 53 #define aha_nextmbx(wmb, mbx, mbio) \ 54 if ((wmb) == &(mbx)->mbio[AHA_MBX_SIZE - 1]) \ 55 (wmb) = &(mbx)->mbio[0]; \ 56 else \ 57 (wmb)++; 58 59 struct aha_mbx { 60 struct aha_mbx_out mbo[AHA_MBX_SIZE]; 61 struct aha_mbx_in mbi[AHA_MBX_SIZE]; 62 struct aha_mbx_out *cmbo; /* Collection Mail Box out */ 63 struct aha_mbx_out *tmbo; /* Target Mail Box out */ 64 struct aha_mbx_in *tmbi; /* Target Mail Box in */ 65 }; 66 67 struct aha_control { 68 struct aha_mbx ac_mbx; /* all our mailboxes */ 69 struct aha_ccb ac_ccbs[AHA_CCB_MAX]; /* all our control blocks */ 70 }; 71 72 struct aha_softc { 73 struct device sc_dev; 74 75 bus_space_tag_t sc_iot; 76 bus_space_handle_t sc_ioh; 77 bus_dma_tag_t sc_dmat; 78 bus_dmamap_t sc_dmamap_control; /* maps the control structures */ 79 void *sc_ih; 80 81 struct aha_control *sc_control; /* control structures */ 82 83 #define wmbx (&sc->sc_control->ac_mbx) 84 85 struct aha_ccb *sc_ccbhash[CCB_HASH_SIZE]; 86 TAILQ_HEAD(, aha_ccb) sc_free_ccb, sc_waiting_ccb; 87 int sc_mbofull; 88 89 struct scsipi_adapter sc_adapter; 90 struct scsipi_channel sc_channel; 91 92 char sc_model[18], 93 sc_firmware[4]; 94 }; 95 96 /* 97 * Offset of a Mail Box In from the beginning of the control DMA mapping. 98 */ 99 #define AHA_MBI_OFF(m) (offsetof(struct aha_control, ac_mbx.mbi[0]) + \ 100 (((u_long)(m)) - ((u_long)&wmbx->mbi[0]))) 101 102 /* 103 * Offset of a Mail Box Out from the beginning of the control DMA mapping. 104 */ 105 #define AHA_MBO_OFF(m) (offsetof(struct aha_control, ac_mbx.mbo[0]) + \ 106 (((u_long)(m)) - ((u_long)&wmbx->mbo[0]))) 107 108 /* 109 * Offset of a CCB from the beginning of the control DMA mapping. 110 */ 111 #define AHA_CCB_OFF(c) (offsetof(struct aha_control, ac_ccbs[0]) + \ 112 (((u_long)(c)) - ((u_long)&sc->sc_control->ac_ccbs[0]))) 113 114 struct aha_probe_data { 115 int sc_irq, sc_drq; 116 int sc_scsi_dev; /* adapters scsi id */ 117 }; 118 119 int aha_find __P((bus_space_tag_t, bus_space_handle_t, 120 struct aha_probe_data *)); 121 void aha_attach __P((struct aha_softc *, struct aha_probe_data *)); 122 int aha_intr __P((void *)); 123