7b4697bdbe
This "oosiop" driver was originally written by Shuichiro URATA for arc port, and then it was modified by me to make it work also on hp700. This driver has been tested on my NEC Express5800/240 with 53c700-66 for several months, and also tested on HP9000 735/125 with 53c700 (though current hp700 port has been broken since SA merge). Both sync transfer and disconnect/reselect work fine, but tagged queuing is not implemented yet.
158 lines
5.7 KiB
C
158 lines
5.7 KiB
C
/* $NetBSD: oosiopvar.h,v 1.1 2003/04/06 09:48:43 tsutsui Exp $ */
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/*
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* Copyright (c) 2001 Shuichiro URATA. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#define OOSIOP_NTGT 8 /* Max targets */
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#define OOSIOP_NCB 32 /* Initial command buffers */
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#define OOSIOP_NSG (MIN(btoc(MAXPHYS) + 1, 32)) /* Max S/G operation */
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#define OOSIOP_MAX_XFER ctob(OOSIOP_NSG - 1)
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struct oosiop_xfer {
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/* script for scatter/gather DMA (move*nsg+jump) */
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u_int32_t datain_scr[(OOSIOP_NSG + 1) * 2];
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u_int32_t dataout_scr[(OOSIOP_NSG + 1) * 2];
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u_int8_t msgin[8];
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u_int8_t msgout[8];
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u_int8_t status;
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u_int8_t pad[7];
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} __attribute__((__packed__));
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#define SCSI_OOSIOP_NOSTATUS 0xff /* device didn't report status */
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#define OOSIOP_XFEROFF(x) offsetof(struct oosiop_xfer, x)
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#define OOSIOP_DINSCROFF OOSIOP_XFEROFF(datain_scr[0])
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#define OOSIOP_DOUTSCROFF OOSIOP_XFEROFF(dataout_scr[0])
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#define OOSIOP_MSGINOFF OOSIOP_XFEROFF(msgin[0])
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#define OOSIOP_MSGOUTOFF OOSIOP_XFEROFF(msgout[0])
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#define OOSIOP_XFERSCR_SYNC(sc, cb, ops) \
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bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DINSCROFF, \
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OOSIOP_MSGINOFF - OOSIOP_DINSCROFF, (ops))
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#define OOSIOP_DINSCR_SYNC(sc, cb, ops) \
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bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DINSCROFF, \
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OOSIOP_DOUTSCROFF - OOSIOP_DINSCROFF, (ops))
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#define OOSIOP_DOUTSCR_SYNC(sc, cb, ops) \
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bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DOUTSCROFF,\
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OOSIOP_MSGINOFF - OOSIOP_DOUTSCROFF, (ops))
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#define OOSIOP_XFERMSG_SYNC(sc, cb, ops) \
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bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_MSGINOFF, \
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sizeof(struct oosiop_xfer) - OOSIOP_MSGINOFF, (ops))
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#define OOSIOP_SCRIPT_SYNC(sc, ops) \
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bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_scrdma, \
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0, sizeof(oosiop_script), (ops))
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struct oosiop_cb {
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TAILQ_ENTRY(oosiop_cb) chain;
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struct scsipi_xfer *xs; /* SCSI xfer ctrl block from above */
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int flags;
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int id; /* target scsi id */
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int lun; /* target lun */
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bus_dmamap_t cmddma; /* DMA map for command out */
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bus_dmamap_t datadma; /* DMA map for data I/O */
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bus_dmamap_t xferdma; /* DMA map for xfer block */
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int curdp; /* current data pointer */
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int savedp; /* saved data pointer */
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int msgoutlen;
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struct oosiop_xfer *xfer; /* DMA xfer block */
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};
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/* oosiop_cb flags */
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#define CBF_SELTOUT 0x01 /* Selection timeout */
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#define CBF_TIMEOUT 0x02 /* Command timeout */
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TAILQ_HEAD(oosiop_cb_queue, oosiop_cb);
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struct oosiop_target {
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struct oosiop_cb *nexus;
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int flags;
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u_int8_t scf; /* synchronous clock divisor */
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u_int8_t sxfer; /* synchronous period and offset */
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};
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/* target flags */
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#define TGTF_SYNCNEG 0x01 /* Trigger synchronous negotiation */
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#define TGTF_WAITSDTR 0x02 /* Waiting SDTR from target */
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struct oosiop_softc {
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struct device sc_dev;
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bus_space_tag_t sc_bst; /* bus space tag */
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bus_space_handle_t sc_bsh; /* bus space handle */
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bus_dma_tag_t sc_dmat; /* bus dma tag */
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bus_dmamap_t sc_scrdma; /* script dma map */
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bus_addr_t sc_scrbase; /* script dma base address */
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u_int32_t *sc_scr; /* ptr to script memory */
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int sc_chip; /* 700 or 700-66 */
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#define OOSIOP_700 0
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#define OOSIOP_700_66 1
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int sc_id; /* SCSI ID of this interface */
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int sc_freq; /* SCLK frequency */
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int sc_ccf; /* asynchronous divisor (*10) */
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u_int8_t sc_dcntl;
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u_int8_t sc_minperiod;
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struct oosiop_target sc_tgt[OOSIOP_NTGT];
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struct scsipi_adapter sc_adapter;
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struct scsipi_channel sc_channel;
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/* Lists of command blocks */
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struct oosiop_cb_queue sc_free_cb;
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struct oosiop_cb_queue sc_cbq; /* command issue queue */
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struct oosiop_cb *sc_curcb; /* current command */
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struct oosiop_cb *sc_lastcb; /* last activated command */
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bus_addr_t sc_reselbuf; /* msgin buffer for reselection */
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int sc_resid; /* reselected target id */
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int sc_active;
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int sc_nextdsp;
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};
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#define oosiop_read_1(sc, addr) \
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bus_space_read_1((sc)->sc_bst, (sc)->sc_bsh, (addr))
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#define oosiop_write_1(sc, addr, data) \
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bus_space_write_1((sc)->sc_bst, (sc)->sc_bsh, (addr), (data))
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/* XXX byte swapping should be handled by MD bus_space(9)? */
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#define oosiop_read_4(sc, addr) \
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le32toh(bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (addr)))
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#define oosiop_write_4(sc, addr, data) \
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bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (addr), htole32(data))
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void oosiop_attach(struct oosiop_softc *);
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int oosiop_intr(struct oosiop_softc *);
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