1 /* $NetBSD: ahavar.h,v 1.15 2009/09/21 08:12:47 tsutsui 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 * 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_AHAVAR_H_ 34 #define _DEV_IC_AHAVAR_H_ 35 36 #include <sys/queue.h> 37 38 /* 39 * Mail box defs etc. 40 * these could be bigger but we need the aha_softc to fit on a single page.. 41 */ 42 #define AHA_MBX_SIZE 16 /* mail box size (MAX 255 MBxs) */ 43 /* don't need that many really */ 44 #define AHA_CCB_MAX 16 /* store up to 16 CCBs at one time */ 45 #define CCB_HASH_SIZE 16 /* hash table size for phystokv */ 46 #define CCB_HASH_SHIFT 9 47 #define CCB_HASH(x) ((((long)(x))>>CCB_HASH_SHIFT) & (CCB_HASH_SIZE - 1)) 48 49 #define aha_nextmbx(wmb, mbx, mbio) \ 50 if ((wmb) == &(mbx)->mbio[AHA_MBX_SIZE - 1]) \ 51 (wmb) = &(mbx)->mbio[0]; \ 52 else \ 53 (wmb)++; 54 55 struct aha_mbx { 56 struct aha_mbx_out mbo[AHA_MBX_SIZE]; 57 struct aha_mbx_in mbi[AHA_MBX_SIZE]; 58 struct aha_mbx_out *cmbo; /* Collection Mail Box out */ 59 struct aha_mbx_out *tmbo; /* Target Mail Box out */ 60 struct aha_mbx_in *tmbi; /* Target Mail Box in */ 61 }; 62 63 struct aha_control { 64 struct aha_mbx ac_mbx; /* all our mailboxes */ 65 struct aha_ccb ac_ccbs[AHA_CCB_MAX]; /* all our control blocks */ 66 }; 67 68 struct aha_softc { 69 device_t sc_dev; 70 71 bus_space_tag_t sc_iot; 72 bus_space_handle_t sc_ioh; 73 bus_dma_tag_t sc_dmat; 74 bus_dmamap_t sc_dmamap_control; /* maps the control structures */ 75 void *sc_ih; 76 77 struct aha_control *sc_control; /* control structures */ 78 79 #define wmbx (&sc->sc_control->ac_mbx) 80 81 struct aha_ccb *sc_ccbhash[CCB_HASH_SIZE]; 82 TAILQ_HEAD(, aha_ccb) sc_free_ccb, sc_waiting_ccb; 83 int sc_mbofull; 84 85 struct scsipi_adapter sc_adapter; 86 struct scsipi_channel sc_channel; 87 88 char sc_model[18], 89 sc_firmware[4]; 90 }; 91 92 /* 93 * Offset of a Mail Box In from the beginning of the control DMA mapping. 94 */ 95 #define AHA_MBI_OFF(m) (offsetof(struct aha_control, ac_mbx.mbi[0]) + \ 96 (((u_long)(m)) - ((u_long)&wmbx->mbi[0]))) 97 98 /* 99 * Offset of a Mail Box Out from the beginning of the control DMA mapping. 100 */ 101 #define AHA_MBO_OFF(m) (offsetof(struct aha_control, ac_mbx.mbo[0]) + \ 102 (((u_long)(m)) - ((u_long)&wmbx->mbo[0]))) 103 104 /* 105 * Offset of a CCB from the beginning of the control DMA mapping. 106 */ 107 #define AHA_CCB_OFF(c) (offsetof(struct aha_control, ac_ccbs[0]) + \ 108 (((u_long)(c)) - ((u_long)&sc->sc_control->ac_ccbs[0]))) 109 110 struct aha_probe_data { 111 int sc_irq, sc_drq; 112 int sc_scsi_dev; /* adapters scsi id */ 113 }; 114 115 int aha_find(bus_space_tag_t, bus_space_handle_t, 116 struct aha_probe_data *); 117 void aha_attach(struct aha_softc *, struct aha_probe_data *); 118 int aha_intr(void *); 119 120 #endif /* _DEV_IC_AHAVAR_H_ */ 121