1/* $NetBSD: oosiopvar.h,v 1.5 2007/12/25 18:33:39 perry Exp $ */ 2 3/* 4 * Copyright (c) 2001 Shuichiro URATA. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#define OOSIOP_NTGT 8 /* Max targets */ 30#define OOSIOP_NCB 32 /* Initial command buffers */ 31#define OOSIOP_NSG (MIN(btoc(MAXPHYS) + 1, 32)) /* Max S/G operation */ 32#define OOSIOP_MAX_XFER ctob(OOSIOP_NSG - 1) 33 34struct oosiop_xfer { 35 /* script for scatter/gather DMA (move*nsg+jump) */ 36 uint32_t datain_scr[(OOSIOP_NSG + 1) * 2]; 37 uint32_t dataout_scr[(OOSIOP_NSG + 1) * 2]; 38 39 uint8_t msgin[8]; 40 uint8_t msgout[8]; 41 uint8_t status; 42 uint8_t pad[7]; 43} __packed; 44 45#define SCSI_OOSIOP_NOSTATUS 0xff /* device didn't report status */ 46 47#define OOSIOP_XFEROFF(x) offsetof(struct oosiop_xfer, x) 48#define OOSIOP_DINSCROFF OOSIOP_XFEROFF(datain_scr[0]) 49#define OOSIOP_DOUTSCROFF OOSIOP_XFEROFF(dataout_scr[0]) 50#define OOSIOP_MSGINOFF OOSIOP_XFEROFF(msgin[0]) 51#define OOSIOP_MSGOUTOFF OOSIOP_XFEROFF(msgout[0]) 52 53#define OOSIOP_XFERSCR_SYNC(sc, cb, ops) \ 54 bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DINSCROFF, \ 55 OOSIOP_MSGINOFF - OOSIOP_DINSCROFF, (ops)) 56#define OOSIOP_DINSCR_SYNC(sc, cb, ops) \ 57 bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DINSCROFF, \ 58 OOSIOP_DOUTSCROFF - OOSIOP_DINSCROFF, (ops)) 59#define OOSIOP_DOUTSCR_SYNC(sc, cb, ops) \ 60 bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DOUTSCROFF,\ 61 OOSIOP_MSGINOFF - OOSIOP_DOUTSCROFF, (ops)) 62#define OOSIOP_XFERMSG_SYNC(sc, cb, ops) \ 63 bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_MSGINOFF, \ 64 sizeof(struct oosiop_xfer) - OOSIOP_MSGINOFF, (ops)) 65 66#define OOSIOP_SCRIPT_SYNC(sc, ops) \ 67 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_scrdma, \ 68 0, sizeof(oosiop_script), (ops)) 69 70struct oosiop_cb { 71 TAILQ_ENTRY(oosiop_cb) chain; 72 73 struct scsipi_xfer *xs; /* SCSI xfer ctrl block from above */ 74 int flags; 75 int id; /* target scsi id */ 76 int lun; /* target lun */ 77 78 bus_dmamap_t cmddma; /* DMA map for command out */ 79 bus_dmamap_t datadma; /* DMA map for data I/O */ 80 bus_dmamap_t xferdma; /* DMA map for xfer block */ 81 82 int curdp; /* current data pointer */ 83 int savedp; /* saved data pointer */ 84 int msgoutlen; 85 86 struct oosiop_xfer *xfer; /* DMA xfer block */ 87}; 88 89/* oosiop_cb flags */ 90#define CBF_SELTOUT 0x01 /* Selection timeout */ 91#define CBF_TIMEOUT 0x02 /* Command timeout */ 92 93TAILQ_HEAD(oosiop_cb_queue, oosiop_cb); 94 95struct oosiop_target { 96 struct oosiop_cb *nexus; 97 int flags; 98 uint8_t scf; /* synchronous clock divisor */ 99 uint8_t sxfer; /* synchronous period and offset */ 100}; 101 102/* target flags */ 103#define TGTF_SYNCNEG 0x01 /* Trigger synchronous negotiation */ 104#define TGTF_WAITSDTR 0x02 /* Waiting SDTR from target */ 105 106struct oosiop_softc { 107 device_t sc_dev; 108 109 bus_space_tag_t sc_bst; /* bus space tag */ 110 bus_space_handle_t sc_bsh; /* bus space handle */ 111 112 bus_dma_tag_t sc_dmat; /* bus DMA tag */ 113 bus_dmamap_t sc_scrdma; /* script DMA map */ 114 115 bus_addr_t sc_scrbase; /* script DMA base address */ 116 uint32_t *sc_scr; /* ptr to script memory */ 117 118 int sc_chip; /* 700 or 700-66 */ 119#define OOSIOP_700 0 120#define OOSIOP_700_66 1 121 122 int sc_id; /* SCSI ID of this interface */ 123 int sc_freq; /* SCLK frequency */ 124 int sc_ccf; /* asynchronous divisor (*10) */ 125 uint8_t sc_dcntl; 126 uint8_t sc_minperiod; 127 128 struct oosiop_target sc_tgt[OOSIOP_NTGT]; 129 130 struct scsipi_adapter sc_adapter; 131 struct scsipi_channel sc_channel; 132 133 /* Lists of command blocks */ 134 struct oosiop_cb_queue sc_free_cb; 135 struct oosiop_cb_queue sc_cbq; /* command issue queue */ 136 struct oosiop_cb *sc_curcb; /* current command */ 137 struct oosiop_cb *sc_lastcb; /* last activated command */ 138 139 bus_addr_t sc_reselbuf; /* msgin buffer for reselection */ 140 int sc_resid; /* reselected target id */ 141 142 int sc_active; 143 int sc_nextdsp; 144}; 145 146#define oosiop_read_1(sc, addr) \ 147 bus_space_read_1((sc)->sc_bst, (sc)->sc_bsh, (addr)) 148#define oosiop_write_1(sc, addr, data) \ 149 bus_space_write_1((sc)->sc_bst, (sc)->sc_bsh, (addr), (data)) 150/* XXX byte swapping should be handled by MD bus_space(9)? */ 151#define oosiop_read_4(sc, addr) \ 152 le32toh(bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (addr))) 153#define oosiop_write_4(sc, addr, data) \ 154 bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (addr), htole32(data)) 155 156void oosiop_attach(struct oosiop_softc *); 157int oosiop_intr(struct oosiop_softc *); 158