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/* $OpenBSD: oosiopvar.h,v 1.4 2010/04/20 20:21:56 miod Exp $ */
/* $NetBSD: oosiopvar.h,v 1.2 2003/05/03 18:11:23 wiz Exp $ */
/*
* Copyright (c) 2001 Shuichiro URATA. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <uvm/uvm_extern.h>
#define OOSIOP_NTGT 8 /* Max targets */
#define OOSIOP_NCB 32 /* Initial command buffers */
#define OOSIOP_NSG (MIN(atop(MAXPHYS) + 1, 32)) /* Max S/G operation */
#define OOSIOP_MAX_XFER ptoa(OOSIOP_NSG - 1)
struct oosiop_xfer {
/* script for scatter/gather DMA (move*nsg+jump) */
u_int32_t datain_scr[(OOSIOP_NSG + 1) * 2];
u_int32_t dataout_scr[(OOSIOP_NSG + 1) * 2];
u_int8_t msgin[8];
u_int8_t msgout[8];
u_int8_t status;
u_int8_t pad[7];
} __packed;
#define SCSI_OOSIOP_NOSTATUS 0xff /* device didn't report status */
#define OOSIOP_XFEROFF(x) offsetof(struct oosiop_xfer, x)
#define OOSIOP_DINSCROFF OOSIOP_XFEROFF(datain_scr[0])
#define OOSIOP_DOUTSCROFF OOSIOP_XFEROFF(dataout_scr[0])
#define OOSIOP_MSGINOFF OOSIOP_XFEROFF(msgin[0])
#define OOSIOP_MSGOUTOFF OOSIOP_XFEROFF(msgout[0])
#define OOSIOP_XFERSCR_SYNC(sc, cb, ops) \
bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DINSCROFF, \
OOSIOP_MSGINOFF - OOSIOP_DINSCROFF, (ops))
#define OOSIOP_DINSCR_SYNC(sc, cb, ops) \
bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DINSCROFF, \
OOSIOP_DOUTSCROFF - OOSIOP_DINSCROFF, (ops))
#define OOSIOP_DOUTSCR_SYNC(sc, cb, ops) \
bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DOUTSCROFF,\
OOSIOP_MSGINOFF - OOSIOP_DOUTSCROFF, (ops))
#define OOSIOP_XFERMSG_SYNC(sc, cb, ops) \
bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_MSGINOFF, \
sizeof(struct oosiop_xfer) - OOSIOP_MSGINOFF, (ops))
#define OOSIOP_SCRIPT_SYNC(sc, ops) \
bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_scrdma, \
0, sizeof(oosiop_script), (ops))
struct oosiop_cb {
TAILQ_ENTRY(oosiop_cb) chain;
struct scsi_xfer *xs; /* SCSI xfer ctrl block from above */
int flags;
int id; /* target scsi id */
int lun; /* target lun */
bus_dmamap_t cmddma; /* DMA map for command out */
bus_dmamap_t datadma; /* DMA map for data I/O */
bus_dmamap_t xferdma; /* DMA map for xfer block */
int curdp; /* current data pointer */
int savedp; /* saved data pointer */
int msgoutlen;
int xsflags; /* copy of xs->flags */
int datalen; /* copy of xs->datalen */
int cmdlen; /* copy of xs->cmdlen */
struct oosiop_xfer *xfer; /* DMA xfer block */
};
/* oosiop_cb flags */
#define CBF_SELTOUT 0x01 /* Selection timeout */
#define CBF_TIMEOUT 0x02 /* Command timeout */
#define CBF_AUTOSENSE 0x04 /* Request sense due to SCSI_CHECK */
struct oosiop_target {
struct oosiop_cb *nexus;
int flags;
u_int8_t scf; /* synchronous clock divisor */
u_int8_t sxfer; /* synchronous period and offset */
};
/* target flags */
#define TGTF_SYNCNEG 0x01 /* Trigger synchronous negotiation */
#define TGTF_WAITSDTR 0x02 /* Waiting SDTR from target */
struct oosiop_softc {
struct device sc_dev;
bus_space_tag_t sc_bst; /* bus space tag */
bus_space_handle_t sc_bsh; /* bus space handle */
bus_dma_tag_t sc_dmat; /* bus DMA tag */
bus_dmamap_t sc_scrdma; /* script DMA map */
bus_addr_t sc_scrbase; /* script DMA base address */
u_int32_t *sc_scr; /* ptr to script memory */
int sc_chip; /* 700 or 700-66 */
#define OOSIOP_700 0
#define OOSIOP_700_66 1
int sc_id; /* SCSI ID of this interface */
int sc_freq; /* SCLK frequency */
int sc_ccf; /* asynchronous divisor (*10) */
u_int8_t sc_dcntl;
u_int8_t sc_minperiod;
struct oosiop_target sc_tgt[OOSIOP_NTGT];
struct scsi_link sc_link;
/* Lists of command blocks */
TAILQ_HEAD(oosiop_cb_queue, oosiop_cb) sc_free_cb,
sc_cbq;
struct oosiop_cb *sc_curcb; /* current command */
struct oosiop_cb *sc_lastcb; /* last activated command */
bus_addr_t sc_reselbuf; /* msgin buffer for reselection */
int sc_resid; /* reselected target id */
int sc_active;
int sc_nextdsp;
uint8_t sc_scntl0;
uint8_t sc_dmode;
uint8_t sc_dwt;
uint8_t sc_ctest7;
};
#define oosiop_read_1(sc, addr) \
bus_space_read_1((sc)->sc_bst, (sc)->sc_bsh, (addr))
#define oosiop_write_1(sc, addr, data) \
bus_space_write_1((sc)->sc_bst, (sc)->sc_bsh, (addr), (data))
/* XXX byte swapping should be handled by MD bus_space(9)? */
#define oosiop_read_4(sc, addr) \
letoh32(bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (addr)))
#define oosiop_write_4(sc, addr, data) \
bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (addr), htole32(data))
void oosiop_attach(struct oosiop_softc *);
int oosiop_intr(struct oosiop_softc *);
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