Repopulate TCDS dual channel SCSI adapter to MI dev/tc, squashing
internals for better layering between TCDS DMA ASIC and ASC SCSI controller.
This commit is contained in:
nisimura
parent
29cea83095
commit
1de4ec68b4
@ -1,4 +1,4 @@
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/* $NetBSD: dec_3000_300.c,v 1.30 2000/05/22 20:13:32 thorpej Exp $ */
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/* $NetBSD: dec_3000_300.c,v 1.31 2000/07/04 02:22:08 nisimura Exp $ */
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/*
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* Copyright (c) 1995, 1996 Carnegie-Mellon University.
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@ -33,7 +33,7 @@
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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: dec_3000_300.c,v 1.30 2000/05/22 20:13:32 thorpej Exp $");
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__KERNEL_RCSID(0, "$NetBSD: dec_3000_300.c,v 1.31 2000/07/04 02:22:08 nisimura Exp $");
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#include "opt_new_scc_driver.h"
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@ -47,7 +47,7 @@ __KERNEL_RCSID(0, "$NetBSD: dec_3000_300.c,v 1.30 2000/05/22 20:13:32 thorpej Ex
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#include <machine/conf.h>
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#include <dev/tc/tcvar.h>
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#include <alpha/tc/tcdsvar.h>
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#include <dev/tc/tcdsvar.h>
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#include <alpha/tc/tc_3000_300.h>
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#ifndef NEW_SCC_DRIVER
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#include <alpha/tc/sccvar.h>
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@ -1,4 +1,4 @@
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/* $NetBSD: dec_3000_500.c,v 1.29 2000/05/22 20:13:32 thorpej Exp $ */
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/* $NetBSD: dec_3000_500.c,v 1.30 2000/07/04 02:22:09 nisimura Exp $ */
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/*
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* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
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@ -32,7 +32,7 @@
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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: dec_3000_500.c,v 1.29 2000/05/22 20:13:32 thorpej Exp $");
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__KERNEL_RCSID(0, "$NetBSD: dec_3000_500.c,v 1.30 2000/07/04 02:22:09 nisimura Exp $");
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#include "opt_new_scc_driver.h"
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@ -47,7 +47,7 @@ __KERNEL_RCSID(0, "$NetBSD: dec_3000_500.c,v 1.29 2000/05/22 20:13:32 thorpej Ex
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#include <machine/conf.h>
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#include <dev/tc/tcvar.h>
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#include <alpha/tc/tcdsvar.h>
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#include <dev/tc/tcdsvar.h>
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#include <alpha/tc/tc_3000_500.h>
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#ifndef NEW_SCC_DRIVER
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#include <alpha/tc/sccvar.h>
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@ -1,4 +1,4 @@
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# $NetBSD: files.alpha,v 1.119 2000/06/25 17:21:57 thorpej Exp $
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# $NetBSD: files.alpha,v 1.120 2000/07/04 02:22:10 nisimura Exp $
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#
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# alpha-specific configuration info
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@ -193,13 +193,12 @@ file dev/dec/zskbd.c zskbd needs-flag
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# the TCDS ASIC
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device tcds { chip = -1 }
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attach tcds at tc
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file arch/alpha/tc/tcds.c tcds
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file dev/tc/tcds.c tcds
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# 53C[F]90 SCSI
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device asc: scsi, ncr53c9x
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attach asc at tcds with asc_tcds
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file arch/alpha/tc/asc.c asc
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file arch/alpha/tc/tcds_dma.c asc
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file dev/tc/asc_tcds.c asc_tcds
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# TC and baseboard ioasic Lance ethernet are in files.tc
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@ -1,340 +0,0 @@
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/* $NetBSD: asc.c,v 1.17 2000/06/05 07:59:50 nisimura Exp $ */
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/*-
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* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace
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* Simulation Facility, NASA Ames Research Center; Paul Kranenburg.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1994 Peter Galbavy
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* 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Peter Galbavy
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* 4. 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
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Based on aic6360 by Jarle Greipsland
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*
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* Acknowledgements: Many of the algorithms used in this driver are
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* inspired by the work of Julian Elischer (julian@tfs.com) and
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* Charles Hannum (mycroft@duality.gnu.ai.mit.edu). Thanks a million!
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*/
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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: asc.c,v 1.17 2000/06/05 07:59:50 nisimura Exp $");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/errno.h>
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#include <sys/ioctl.h>
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#include <sys/device.h>
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#include <sys/buf.h>
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#include <sys/proc.h>
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#include <sys/user.h>
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#include <sys/queue.h>
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#include <dev/scsipi/scsi_all.h>
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#include <dev/scsipi/scsipi_all.h>
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#include <dev/scsipi/scsiconf.h>
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#include <dev/scsipi/scsi_message.h>
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#include <machine/bus.h>
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#include <machine/cpu.h>
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#include <dev/ic/ncr53c9xreg.h>
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#include <dev/ic/ncr53c9xvar.h>
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#include <dev/tc/tcvar.h>
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#include <alpha/tc/tcdsvar.h>
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#include <alpha/tc/ascvar.h>
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int asc_tcds_match __P((struct device *, struct cfdata *, void *));
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void asc_tcds_attach __P((struct device *, struct device *, void *));
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/* Linkup to the rest of the kernel */
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struct cfattach asc_tcds_ca = {
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sizeof(struct asc_tcds_softc), asc_tcds_match, asc_tcds_attach
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};
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/*
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* Functions and the switch for the MI code.
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*/
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u_char asc_tcds_read_reg __P((struct ncr53c9x_softc *, int));
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void asc_tcds_write_reg __P((struct ncr53c9x_softc *, int, u_char));
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int asc_tcds_dma_isintr __P((struct ncr53c9x_softc *));
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void asc_tcds_dma_reset __P((struct ncr53c9x_softc *));
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int asc_tcds_dma_intr __P((struct ncr53c9x_softc *));
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int asc_tcds_dma_setup __P((struct ncr53c9x_softc *, caddr_t *,
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size_t *, int, size_t *));
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void asc_tcds_dma_go __P((struct ncr53c9x_softc *));
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void asc_tcds_dma_stop __P((struct ncr53c9x_softc *));
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int asc_tcds_dma_isactive __P((struct ncr53c9x_softc *));
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void asc_tcds_clear_latched_intr __P((struct ncr53c9x_softc *));
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struct ncr53c9x_glue asc_tcds_glue = {
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asc_tcds_read_reg,
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asc_tcds_write_reg,
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asc_tcds_dma_isintr,
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asc_tcds_dma_reset,
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asc_tcds_dma_intr,
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asc_tcds_dma_setup,
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asc_tcds_dma_go,
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asc_tcds_dma_stop,
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asc_tcds_dma_isactive,
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asc_tcds_clear_latched_intr,
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};
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int
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asc_tcds_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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/* We always exist. */
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return (1);
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}
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/*
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* Attach this instance, and then all the sub-devices
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*/
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void
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asc_tcds_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct tcdsdev_attach_args *tcdsdev = aux;
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struct asc_tcds_softc *asc = (void *)self;
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struct ncr53c9x_softc *sc = &asc->sc_ncr53c9x;
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/*
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* Set up glue for MI code early; we use some of it here.
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*/
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sc->sc_glue = &asc_tcds_glue;
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asc->sc_bst = tcdsdev->tcdsda_bst;
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asc->sc_bsh = tcdsdev->tcdsda_bsh;
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asc->sc_dma = tcdsdev->tcdsda_sc;
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sc->sc_id = tcdsdev->tcdsda_id;
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sc->sc_freq = tcdsdev->tcdsda_freq;
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/* gimme Mhz */
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sc->sc_freq /= 1000000;
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asc->sc_dma->sc_asc = asc; /* XXX */
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tcds_intr_establish(parent, tcdsdev->tcdsda_chip, ncr53c9x_intr, sc);
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/*
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* XXX More of this should be in ncr53c9x_attach(), but
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* XXX should we really poke around the chip that much in
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* XXX the MI code? Think about this more...
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*/
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/*
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* Set up static configuration info.
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*/
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sc->sc_cfg1 = sc->sc_id | NCRCFG1_PARENB;
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sc->sc_cfg2 = NCRCFG2_SCSI2;
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sc->sc_cfg3 = NCRCFG3_CDB;
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if (sc->sc_freq > 25)
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sc->sc_cfg3 |= NCRF9XCFG3_FCLK;
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sc->sc_rev = tcdsdev->tcdsda_variant;
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if (tcdsdev->tcdsda_fast) {
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sc->sc_features |= NCR_F_FASTSCSI;
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sc->sc_cfg3_fscsi = NCRF9XCFG3_FSCSI;
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}
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/*
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* XXX minsync and maxxfer _should_ be set up in MI code,
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* XXX but it appears to have some dependency on what sort
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* XXX of DMA we're hooked up to, etc.
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*/
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/*
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* This is the value used to start sync negotiations
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* Note that the NCR register "SYNCTP" is programmed
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* in "clocks per byte", and has a minimum value of 4.
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* The SCSI period used in negotiation is one-fourth
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* of the time (in nanoseconds) needed to transfer one byte.
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* Since the chip's clock is given in MHz, we have the following
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* formula: 4 * period = (1000 / freq) * 4
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*/
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sc->sc_minsync = (1000 / sc->sc_freq) * tcdsdev->tcdsda_period / 4;
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sc->sc_maxxfer = 64 * 1024;
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/* Do the common parts of attachment. */
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ncr53c9x_attach(sc, NULL, NULL);
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}
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/*
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* Glue functions.
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*/
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u_char
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asc_tcds_read_reg(sc, reg)
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struct ncr53c9x_softc *sc;
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int reg;
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{
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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u_char v;
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v = bus_space_read_4(asc->sc_bst, asc->sc_bsh,
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reg * sizeof(u_int32_t)) & 0xff;
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return (v);
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}
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void
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asc_tcds_write_reg(sc, reg, val)
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struct ncr53c9x_softc *sc;
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int reg;
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u_char val;
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{
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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bus_space_write_4(asc->sc_bst, asc->sc_bsh,
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reg * sizeof(u_int32_t), val);
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}
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int
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asc_tcds_dma_isintr(sc)
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struct ncr53c9x_softc *sc;
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{
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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return (tcds_dma_isintr(asc->sc_dma));
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}
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void
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asc_tcds_dma_reset(sc)
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struct ncr53c9x_softc *sc;
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{
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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tcds_dma_reset(asc->sc_dma);
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}
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int
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asc_tcds_dma_intr(sc)
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struct ncr53c9x_softc *sc;
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{
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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return (tcds_dma_intr(asc->sc_dma));
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}
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int
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asc_tcds_dma_setup(sc, addr, len, datain, dmasize)
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struct ncr53c9x_softc *sc;
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caddr_t *addr;
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size_t *len;
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int datain;
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size_t *dmasize;
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{
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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return (tcds_dma_setup(asc->sc_dma, addr, len, datain, dmasize));
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}
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void
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asc_tcds_dma_go(sc)
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struct ncr53c9x_softc *sc;
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{
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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tcds_dma_go(asc->sc_dma);
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}
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void
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asc_tcds_dma_stop(sc)
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struct ncr53c9x_softc *sc;
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{
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#if 0
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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#endif
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/*
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* XXX STOP DMA HERE!
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*/
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}
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int
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asc_tcds_dma_isactive(sc)
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struct ncr53c9x_softc *sc;
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{
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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return (tcds_dma_isactive(asc->sc_dma));
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}
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void
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asc_tcds_clear_latched_intr(sc)
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struct ncr53c9x_softc *sc;
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{
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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/* Clear the TCDS interrupt bit. */
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(void)tcds_scsi_isintr(asc->sc_dma, 1);
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}
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@ -1,47 +0,0 @@
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/* $NetBSD: ascvar.h,v 1.6 1998/05/26 23:37:44 thorpej Exp $ */
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/*-
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* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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||||
*
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||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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||||
*
|
||||
* 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. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the NetBSD
|
||||
* Foundation, Inc. and its contributors.
|
||||
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
* ``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 FOUNDATION OR CONTRIBUTORS
|
||||
* 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.
|
||||
*/
|
||||
|
||||
struct asc_tcds_softc {
|
||||
struct ncr53c9x_softc sc_ncr53c9x; /* glue to MI code */
|
||||
|
||||
bus_space_tag_t sc_bst; /* bus space tag */
|
||||
bus_space_handle_t sc_bsh; /* bus space handle */
|
||||
|
||||
struct tcds_slotconfig *sc_dma; /* DMA/slot info lives here */
|
||||
};
|
||||
@ -1,359 +0,0 @@
|
||||
/* $NetBSD: tcds_dma.c,v 1.30 2000/06/29 09:02:58 mrg Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 1998 The NetBSD Foundation, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
|
||||
* NASA Ames Research Center.
|
||||
*
|
||||
* 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. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the NetBSD
|
||||
* Foundation, Inc. and its contributors.
|
||||
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
* ``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 FOUNDATION OR CONTRIBUTORS
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Copyright (c) 1994 Peter Galbavy. 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. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by Peter Galbavy.
|
||||
* 4. 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 <sys/cdefs.h> /* RCS ID & Copyright macro defns */
|
||||
|
||||
__KERNEL_RCSID(0, "$NetBSD: tcds_dma.c,v 1.30 2000/06/29 09:02:58 mrg Exp $");
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/errno.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include <sys/device.h>
|
||||
#include <sys/malloc.h>
|
||||
#include <sys/buf.h>
|
||||
#include <sys/proc.h>
|
||||
#include <sys/user.h>
|
||||
|
||||
#include <uvm/uvm_extern.h>
|
||||
|
||||
#include <dev/scsipi/scsi_all.h>
|
||||
#include <dev/scsipi/scsipi_all.h>
|
||||
#include <dev/scsipi/scsiconf.h>
|
||||
|
||||
#include <dev/ic/ncr53c9xreg.h>
|
||||
#include <dev/ic/ncr53c9xvar.h>
|
||||
|
||||
#include <machine/bus.h>
|
||||
|
||||
#include <dev/tc/tcvar.h>
|
||||
#include <alpha/tc/tcdsreg.h>
|
||||
#include <alpha/tc/tcdsvar.h>
|
||||
#include <alpha/tc/ascvar.h>
|
||||
|
||||
void
|
||||
tcds_dma_reset(sc)
|
||||
struct tcds_slotconfig *sc;
|
||||
{
|
||||
/* TCDS SCSI disable/reset/enable. */
|
||||
tcds_scsi_reset(sc); /* XXX */
|
||||
|
||||
sc->sc_active = 0; /* and of course we aren't */
|
||||
}
|
||||
|
||||
int
|
||||
tcds_dma_isintr(sc)
|
||||
struct tcds_slotconfig *sc;
|
||||
{
|
||||
int x;
|
||||
|
||||
x = tcds_scsi_isintr(sc, 1);
|
||||
|
||||
/* XXX */
|
||||
return x;
|
||||
}
|
||||
|
||||
/*
|
||||
* Pseudo (chained) interrupt from the asc driver to kick the
|
||||
* current running DMA transfer. I am relying on ascintr() to
|
||||
* pickup and clean errors for now
|
||||
*
|
||||
* return 1 if it was a DMA continue.
|
||||
*/
|
||||
int
|
||||
tcds_dma_intr(sc)
|
||||
struct tcds_slotconfig *sc;
|
||||
{
|
||||
struct ncr53c9x_softc *nsc = &sc->sc_asc->sc_ncr53c9x;
|
||||
bus_dmamap_t map = sc->sc_dmamap;
|
||||
u_int32_t dud;
|
||||
int trans, resid;
|
||||
u_int32_t *addr, dudmask;
|
||||
u_int8_t tcl, tcm, tch;
|
||||
bus_addr_t pa;
|
||||
|
||||
NCR_DMA(("tcds_dma %d: intr", sc->sc_slot));
|
||||
|
||||
if (tcds_scsi_iserr(sc))
|
||||
return (0);
|
||||
|
||||
/* This is an "assertion" :) */
|
||||
if (sc->sc_active == 0)
|
||||
panic("tcds_dma_intr: DMA wasn't active");
|
||||
|
||||
/* DMA has stopped */
|
||||
tcds_dma_enable(sc, 0);
|
||||
sc->sc_active = 0;
|
||||
|
||||
if (sc->sc_dmasize == 0) {
|
||||
/* A "Transfer Pad" operation completed */
|
||||
tcl = NCR_READ_REG(nsc, NCR_TCL);
|
||||
tcm = NCR_READ_REG(nsc, NCR_TCM);
|
||||
NCR_DMA(("tcds_dma_intr: discarded %d bytes (tcl=%d, tcm=%d)\n",
|
||||
tcl | (tcm << 8), tcl, tcm));
|
||||
return 0;
|
||||
}
|
||||
|
||||
resid = 0;
|
||||
if (!sc->sc_ispullup &&
|
||||
(resid = (NCR_READ_REG(nsc, NCR_FFLAG) & NCRFIFO_FF)) != 0) {
|
||||
NCR_DMA(("dmaintr: empty esp FIFO of %d ", resid));
|
||||
DELAY(1);
|
||||
}
|
||||
|
||||
resid += (tcl = NCR_READ_REG(nsc, NCR_TCL));
|
||||
resid += (tcm = NCR_READ_REG(nsc, NCR_TCM)) << 8;
|
||||
if (nsc->sc_rev == NCR_VARIANT_ESP200)
|
||||
resid += (tch = NCR_READ_REG(nsc, NCR_TCH)) << 16;
|
||||
else
|
||||
tch = 0;
|
||||
|
||||
if (resid == 0 && (nsc->sc_rev <= NCR_VARIANT_ESP100A) &&
|
||||
(nsc->sc_espstat & NCRSTAT_TC) == 0)
|
||||
resid = 65536;
|
||||
|
||||
trans = sc->sc_dmasize - resid;
|
||||
if (trans < 0) { /* transferred < 0 ? */
|
||||
printf("tcds_dma %d: xfer (%d) > req (%d)\n",
|
||||
sc->sc_slot, trans, (int)sc->sc_dmasize);
|
||||
trans = sc->sc_dmasize;
|
||||
}
|
||||
|
||||
NCR_DMA(("tcds_dma_intr: tcl=%d, tcm=%d, tch=%d; trans=%d, resid=%d\n",
|
||||
tcl, tcm, tch, trans, resid));
|
||||
|
||||
bus_dmamap_sync(sc->sc_dmat, map, 0, map->dm_mapsize,
|
||||
(sc->sc_ispullup ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE));
|
||||
|
||||
/*
|
||||
* Clean up unaligned DMAs into main memory.
|
||||
*/
|
||||
if (sc->sc_ispullup) {
|
||||
/* Handle unaligned starting address, length. */
|
||||
dud = bus_space_read_4(sc->sc_bst, sc->sc_bsh, sc->sc_dud0);
|
||||
if ((dud & TCDS_DUD0_VALIDBITS) != 0) {
|
||||
addr = (u_int32_t *)
|
||||
((paddr_t)*sc->sc_dmaaddr & ~0x3);
|
||||
dudmask = 0;
|
||||
if (dud & TCDS_DUD0_VALID00)
|
||||
panic("tcds_dma: dud0 byte 0 valid");
|
||||
if (dud & TCDS_DUD0_VALID01)
|
||||
dudmask |= TCDS_DUD_BYTE01;
|
||||
if (dud & TCDS_DUD0_VALID10)
|
||||
dudmask |= TCDS_DUD_BYTE10;
|
||||
#ifdef DIAGNOSTIC
|
||||
if (dud & TCDS_DUD0_VALID11)
|
||||
dudmask |= TCDS_DUD_BYTE11;
|
||||
#endif
|
||||
NCR_DMA(("dud0 at 0x%p dudmask 0x%x\n",
|
||||
addr, dudmask));
|
||||
*addr = (*addr & ~dudmask) | (dud & dudmask);
|
||||
}
|
||||
dud = bus_space_read_4(sc->sc_bst, sc->sc_bsh, sc->sc_dud1);
|
||||
if ((dud & TCDS_DUD1_VALIDBITS) != 0) {
|
||||
pa = bus_space_read_4(sc->sc_bst, sc->sc_bsh,
|
||||
sc->sc_sda) << 2;
|
||||
dudmask = 0;
|
||||
if (dud & TCDS_DUD1_VALID00)
|
||||
dudmask |= TCDS_DUD_BYTE00;
|
||||
if (dud & TCDS_DUD1_VALID01)
|
||||
dudmask |= TCDS_DUD_BYTE01;
|
||||
if (dud & TCDS_DUD1_VALID10)
|
||||
dudmask |= TCDS_DUD_BYTE10;
|
||||
#ifdef DIAGNOSTIC
|
||||
if (dud & TCDS_DUD1_VALID11)
|
||||
panic("tcds_dma: dud1 byte 3 valid");
|
||||
#endif
|
||||
NCR_DMA(("dud1 at 0x%lx dudmask 0x%x\n",
|
||||
pa, dudmask));
|
||||
/* XXX Fix TC_PHYS_TO_UNCACHED() */
|
||||
#if defined(__alpha__)
|
||||
addr = (u_int32_t *)ALPHA_PHYS_TO_K0SEG(pa);
|
||||
#elif defined(__mips__)
|
||||
addr = (u_int32_t *)MIPS_PHYS_TO_KSEG1(pa);
|
||||
#else
|
||||
#error TurboChannel only exists on DECs, folks...
|
||||
#endif
|
||||
*addr = (*addr & ~dudmask) | (dud & dudmask);
|
||||
}
|
||||
/* XXX deal with saved residual byte? */
|
||||
}
|
||||
|
||||
bus_dmamap_unload(sc->sc_dmat, map);
|
||||
|
||||
*sc->sc_dmalen -= trans;
|
||||
*sc->sc_dmaaddr += trans;
|
||||
|
||||
#if 0 /* this is not normal operation just yet */
|
||||
if (*sc->sc_dmalen == 0 ||
|
||||
nsc->sc_phase != nsc->sc_prevphase)
|
||||
return 0;
|
||||
|
||||
/* and again */
|
||||
dma_start(sc, sc->sc_dmaaddr, sc->sc_dmalen, sc->sc_ispullup);
|
||||
return 1;
|
||||
#endif
|
||||
return 0;
|
||||
}
|
||||
|
||||
#define DMAMAX(a) (0x02000 - ((a) & 0x1fff))
|
||||
|
||||
/*
|
||||
* start a dma transfer or keep it going
|
||||
*/
|
||||
int
|
||||
tcds_dma_setup(sc, addr, len, datain, dmasize)
|
||||
struct tcds_slotconfig *sc;
|
||||
caddr_t *addr;
|
||||
size_t *len, *dmasize;
|
||||
int datain; /* DMA into main memory */
|
||||
{
|
||||
bus_dmamap_t map = sc->sc_dmamap;
|
||||
u_int32_t dic;
|
||||
size_t size;
|
||||
|
||||
sc->sc_dmaaddr = addr;
|
||||
sc->sc_dmalen = len;
|
||||
sc->sc_ispullup = datain;
|
||||
|
||||
NCR_DMA(("tcds_dma %d: start %d@%p,%d\n", sc->sc_slot,
|
||||
(int)*sc->sc_dmalen, *sc->sc_dmaaddr, sc->sc_ispullup));
|
||||
|
||||
/*
|
||||
* the rules say we cannot transfer more than the limit
|
||||
* of this DMA chip (64k) and we cannot cross a 8k boundary.
|
||||
*/
|
||||
|
||||
size = min(*dmasize, DMAMAX((size_t) *sc->sc_dmaaddr));
|
||||
*dmasize = sc->sc_dmasize = size;
|
||||
|
||||
NCR_DMA(("dma_start: dmasize = %d\n", (int)sc->sc_dmasize));
|
||||
|
||||
if (bus_dmamap_load(sc->sc_dmat, map, *addr, size,
|
||||
NULL, BUS_DMA_NOWAIT)) {
|
||||
/*
|
||||
* XXX Should return an error, here, but the upper-layer
|
||||
* XXX doesn't check the return value!
|
||||
*/
|
||||
panic("tcds_dma_setup: dmamap load failed");
|
||||
}
|
||||
|
||||
bus_dmamap_sync(sc->sc_dmat, map, 0, map->dm_mapsize,
|
||||
(sc->sc_ispullup ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE));
|
||||
|
||||
/* Load address, set/clear unaligned transfer and read/write bits. */
|
||||
bus_space_write_4(sc->sc_bst, sc->sc_bsh, sc->sc_sda,
|
||||
map->dm_segs[0].ds_addr >> 2);
|
||||
dic = bus_space_read_4(sc->sc_bst, sc->sc_bsh, sc->sc_dic);
|
||||
dic &= ~TCDS_DIC_ADDRMASK;
|
||||
dic |= map->dm_segs[0].ds_addr & TCDS_DIC_ADDRMASK;
|
||||
if (datain)
|
||||
dic |= TCDS_DIC_WRITE;
|
||||
else
|
||||
dic &= ~TCDS_DIC_WRITE;
|
||||
bus_space_write_4(sc->sc_bst, sc->sc_bsh, sc->sc_dic, dic);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
void
|
||||
tcds_dma_go(sc)
|
||||
struct tcds_slotconfig *sc;
|
||||
{
|
||||
|
||||
/* mark unit as DMA-active */
|
||||
sc->sc_active = 1;
|
||||
|
||||
/* Start DMA */
|
||||
tcds_dma_enable(sc, 1);
|
||||
}
|
||||
|
||||
int
|
||||
tcds_dma_isactive(sc)
|
||||
struct tcds_slotconfig *sc;
|
||||
{
|
||||
|
||||
return (sc->sc_active);
|
||||
}
|
||||
|
||||
int
|
||||
tcds_dma_init(sc)
|
||||
struct tcds_slotconfig *sc;
|
||||
{
|
||||
|
||||
/*
|
||||
* The TCDS ASIC cannot DMA across 8k boundaries, and this
|
||||
* driver is written such that each DMA segment gets a new
|
||||
* call to tcds_dma_setup(). Thus, the DMA map only needs
|
||||
* to support 8k transfers.
|
||||
*/
|
||||
return (bus_dmamap_create(sc->sc_dmat, 0x2000, 1, 0x2000,
|
||||
0x2000, BUS_DMA_NOWAIT, &sc->sc_dmamap));
|
||||
}
|
||||
534
sys/dev/tc/asc_tcds.c
Normal file
534
sys/dev/tc/asc_tcds.c
Normal file
@ -0,0 +1,534 @@
|
||||
/* $NetBSD: asc_tcds.c,v 1.1 2000/07/04 02:22:19 nisimura Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 1998 The NetBSD Foundation, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
|
||||
* NASA Ames Research Center.
|
||||
*
|
||||
* 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. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the NetBSD
|
||||
* Foundation, Inc. and its contributors.
|
||||
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
* ``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 FOUNDATION OR CONTRIBUTORS
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Copyright (c) 1994 Peter Galbavy. 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. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by Peter Galbavy.
|
||||
* 4. 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 <sys/cdefs.h> /* RCS ID & Copyright macro defns */
|
||||
|
||||
__KERNEL_RCSID(0, "$NetBSD: asc_tcds.c,v 1.1 2000/07/04 02:22:19 nisimura Exp $");
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/device.h>
|
||||
|
||||
#include <dev/scsipi/scsi_all.h>
|
||||
#include <dev/scsipi/scsipi_all.h>
|
||||
#include <dev/scsipi/scsiconf.h>
|
||||
|
||||
#include <dev/ic/ncr53c9xreg.h>
|
||||
#include <dev/ic/ncr53c9xvar.h>
|
||||
|
||||
#include <machine/bus.h>
|
||||
|
||||
#include <dev/tc/tcvar.h>
|
||||
#include <dev/tc/tcdsreg.h>
|
||||
#include <dev/tc/tcdsvar.h>
|
||||
|
||||
struct asc_softc {
|
||||
struct ncr53c9x_softc sc_ncr53c9x; /* glue to MI code */
|
||||
bus_space_tag_t sc_bst; /* bus space tag */
|
||||
bus_space_handle_t sc_scsi_bsh; /* ASC register handle */
|
||||
bus_dma_tag_t sc_dmat; /* bus dma tag */
|
||||
bus_dmamap_t sc_dmamap; /* bus dmamap */
|
||||
caddr_t *sc_dmaaddr;
|
||||
size_t *sc_dmalen;
|
||||
size_t sc_dmasize;
|
||||
unsigned sc_flags;
|
||||
#define ASC_ISPULLUP 0x01
|
||||
#define ASC_DMAACTIVE 0x02
|
||||
#define ASC_MAPLOADED 0x04
|
||||
struct tcds_slotconfig *sc_tcds; /* DMA/slot info lives here */
|
||||
};
|
||||
|
||||
static int asc_tcds_match __P((struct device *, struct cfdata *, void *));
|
||||
static void asc_tcds_attach __P((struct device *, struct device *, void *));
|
||||
|
||||
/* Linkup to the rest of the kernel */
|
||||
struct cfattach asc_tcds_ca = {
|
||||
sizeof(struct asc_softc), asc_tcds_match, asc_tcds_attach
|
||||
};
|
||||
|
||||
/*
|
||||
* Functions and the switch for the MI code.
|
||||
*/
|
||||
static u_char asc_read_reg __P((struct ncr53c9x_softc *, int));
|
||||
static void asc_write_reg __P((struct ncr53c9x_softc *, int, u_char));
|
||||
static int tcds_dma_isintr __P((struct ncr53c9x_softc *));
|
||||
static void tcds_dma_reset __P((struct ncr53c9x_softc *));
|
||||
static int tcds_dma_intr __P((struct ncr53c9x_softc *));
|
||||
static int tcds_dma_setup __P((struct ncr53c9x_softc *, caddr_t *,
|
||||
size_t *, int, size_t *));
|
||||
static void tcds_dma_go __P((struct ncr53c9x_softc *));
|
||||
static void tcds_dma_stop __P((struct ncr53c9x_softc *));
|
||||
static int tcds_dma_isactive __P((struct ncr53c9x_softc *));
|
||||
static void tcds_clear_latched_intr __P((struct ncr53c9x_softc *));
|
||||
|
||||
static struct ncr53c9x_glue asc_tcds_glue = {
|
||||
asc_read_reg,
|
||||
asc_write_reg,
|
||||
tcds_dma_isintr,
|
||||
tcds_dma_reset,
|
||||
tcds_dma_intr,
|
||||
tcds_dma_setup,
|
||||
tcds_dma_go,
|
||||
tcds_dma_stop,
|
||||
tcds_dma_isactive,
|
||||
tcds_clear_latched_intr,
|
||||
};
|
||||
|
||||
static int
|
||||
asc_tcds_match(parent, cf, aux)
|
||||
struct device *parent;
|
||||
struct cfdata *cf;
|
||||
void *aux;
|
||||
{
|
||||
|
||||
/* We always exist. */
|
||||
return 1;
|
||||
}
|
||||
|
||||
#define DMAMAX(a) (NBPG - ((a) & (NBPG - 1)))
|
||||
|
||||
/*
|
||||
* Attach this instance, and then all the sub-devices
|
||||
*/
|
||||
static void
|
||||
asc_tcds_attach(parent, self, aux)
|
||||
struct device *parent, *self;
|
||||
void *aux;
|
||||
{
|
||||
struct tcdsdev_attach_args *tcdsdev = aux;
|
||||
struct asc_softc *asc = (struct asc_softc *)self;
|
||||
struct ncr53c9x_softc *sc = &asc->sc_ncr53c9x;
|
||||
int error;
|
||||
|
||||
/*
|
||||
* Set up glue for MI code early; we use some of it here.
|
||||
*/
|
||||
sc->sc_glue = &asc_tcds_glue;
|
||||
|
||||
asc->sc_bst = tcdsdev->tcdsda_bst;
|
||||
asc->sc_scsi_bsh = tcdsdev->tcdsda_bsh;
|
||||
asc->sc_tcds = tcdsdev->tcdsda_sc;
|
||||
|
||||
/*
|
||||
* The TCDS ASIC cannot DMA across 8k boundaries, and this
|
||||
* driver is written such that each DMA segment gets a new
|
||||
* call to tcds_dma_setup(). Thus, the DMA map only needs
|
||||
* to support 8k transfers.
|
||||
*/
|
||||
asc->sc_dmat = tcdsdev->tcdsda_dmat;
|
||||
if ((error = bus_dmamap_create(asc->sc_dmat, NBPG, 1, NBPG,
|
||||
NBPG, BUS_DMA_NOWAIT, &asc->sc_dmamap)) < 0) {
|
||||
printf("failed to create dma map, error = %d\n", error);
|
||||
}
|
||||
|
||||
sc->sc_id = tcdsdev->tcdsda_id;
|
||||
sc->sc_freq = tcdsdev->tcdsda_freq;
|
||||
|
||||
/* gimme Mhz */
|
||||
sc->sc_freq /= 1000000;
|
||||
|
||||
tcds_intr_establish(parent, tcdsdev->tcdsda_chip, ncr53c9x_intr, sc);
|
||||
|
||||
/*
|
||||
* XXX More of this should be in ncr53c9x_attach(), but
|
||||
* XXX should we really poke around the chip that much in
|
||||
* XXX the MI code? Think about this more...
|
||||
*/
|
||||
|
||||
/*
|
||||
* Set up static configuration info.
|
||||
*/
|
||||
sc->sc_cfg1 = sc->sc_id | NCRCFG1_PARENB;
|
||||
sc->sc_cfg2 = NCRCFG2_SCSI2;
|
||||
sc->sc_cfg3 = NCRCFG3_CDB;
|
||||
if (sc->sc_freq > 25)
|
||||
sc->sc_cfg3 |= NCRF9XCFG3_FCLK;
|
||||
sc->sc_rev = tcdsdev->tcdsda_variant;
|
||||
if (tcdsdev->tcdsda_fast) {
|
||||
sc->sc_features |= NCR_F_FASTSCSI;
|
||||
sc->sc_cfg3_fscsi = NCRF9XCFG3_FSCSI;
|
||||
}
|
||||
|
||||
/*
|
||||
* XXX minsync and maxxfer _should_ be set up in MI code,
|
||||
* XXX but it appears to have some dependency on what sort
|
||||
* XXX of DMA we're hooked up to, etc.
|
||||
*/
|
||||
|
||||
/*
|
||||
* This is the value used to start sync negotiations
|
||||
* Note that the NCR register "SYNCTP" is programmed
|
||||
* in "clocks per byte", and has a minimum value of 4.
|
||||
* The SCSI period used in negotiation is one-fourth
|
||||
* of the time (in nanoseconds) needed to transfer one byte.
|
||||
* Since the chip's clock is given in MHz, we have the following
|
||||
* formula: 4 * period = (1000 / freq) * 4
|
||||
*/
|
||||
sc->sc_minsync = (1000 / sc->sc_freq) * tcdsdev->tcdsda_period / 4;
|
||||
|
||||
sc->sc_maxxfer = 64 * 1024;
|
||||
|
||||
/* Do the common parts of attachment. */
|
||||
ncr53c9x_attach(sc, NULL, NULL);
|
||||
}
|
||||
|
||||
static void
|
||||
tcds_dma_reset(sc)
|
||||
struct ncr53c9x_softc *sc;
|
||||
{
|
||||
struct asc_softc *asc = (struct asc_softc *)sc;
|
||||
|
||||
/* TCDS SCSI disable/reset/enable. */
|
||||
tcds_scsi_reset(asc->sc_tcds); /* XXX */
|
||||
|
||||
if (asc->sc_flags & ASC_MAPLOADED)
|
||||
bus_dmamap_unload(asc->sc_dmat, asc->sc_dmamap);
|
||||
asc->sc_flags &= ~(ASC_DMAACTIVE|ASC_MAPLOADED);
|
||||
}
|
||||
|
||||
/*
|
||||
* start a dma transfer or keep it going
|
||||
*/
|
||||
int
|
||||
tcds_dma_setup(sc, addr, len, ispullup, dmasize)
|
||||
struct ncr53c9x_softc *sc;
|
||||
caddr_t *addr;
|
||||
size_t *len, *dmasize;
|
||||
int ispullup; /* DMA into main memory */
|
||||
{
|
||||
struct asc_softc *asc = (struct asc_softc *)sc;
|
||||
struct tcds_slotconfig *tcds = asc->sc_tcds;
|
||||
size_t size;
|
||||
u_int32_t dic;
|
||||
|
||||
NCR_DMA(("tcds_dma %d: start %d@%p,%s\n", tcds->sc_slot,
|
||||
(int)*asc->sc_dmalen, *asc->sc_dmaaddr,
|
||||
(ispullup) ? "IN" : "OUT"));
|
||||
|
||||
/*
|
||||
* the rules say we cannot transfer more than the limit
|
||||
* of this DMA chip (64k) and we cannot cross a 8k boundary.
|
||||
*/
|
||||
size = min(*dmasize, DMAMAX((size_t)*addr));
|
||||
asc->sc_dmaaddr = addr;
|
||||
asc->sc_dmalen = len;
|
||||
asc->sc_flags = (ispullup) ? ASC_ISPULLUP : 0;
|
||||
*dmasize = asc->sc_dmasize = size;
|
||||
|
||||
NCR_DMA(("dma_start: dmasize = %d\n", (int)size));
|
||||
|
||||
if (size == 0)
|
||||
return 0;
|
||||
|
||||
if (bus_dmamap_load(asc->sc_dmat, asc->sc_dmamap, *addr, size,
|
||||
NULL, BUS_DMA_NOWAIT)) {
|
||||
/*
|
||||
* XXX Should return an error, here, but the upper-layer
|
||||
* XXX doesn't check the return value!
|
||||
*/
|
||||
panic("tcds_dma_setup: dmamap load failed");
|
||||
}
|
||||
|
||||
/* synchronize dmamap contents with memory image */
|
||||
bus_dmamap_sync(asc->sc_dmat, asc->sc_dmamap, 0, size,
|
||||
(ispullup) ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
|
||||
|
||||
/* load address, set/clear unaligned transfer and read/write bits. */
|
||||
bus_space_write_4(tcds->sc_bst, tcds->sc_bsh, tcds->sc_sda,
|
||||
asc->sc_dmamap->dm_segs[0].ds_addr >> 2);
|
||||
dic = bus_space_read_4(tcds->sc_bst, tcds->sc_bsh, tcds->sc_dic);
|
||||
dic &= ~TCDS_DIC_ADDRMASK;
|
||||
dic |= asc->sc_dmamap->dm_segs[0].ds_addr & TCDS_DIC_ADDRMASK;
|
||||
if (ispullup)
|
||||
dic |= TCDS_DIC_WRITE;
|
||||
else
|
||||
dic &= ~TCDS_DIC_WRITE;
|
||||
bus_space_write_4(tcds->sc_bst, tcds->sc_bsh, tcds->sc_dic, dic);
|
||||
|
||||
asc->sc_flags |= ASC_MAPLOADED;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
tcds_dma_go(sc)
|
||||
struct ncr53c9x_softc *sc;
|
||||
{
|
||||
struct asc_softc *asc = (struct asc_softc *)sc;
|
||||
|
||||
/* mark unit as DMA-active */
|
||||
asc->sc_flags |= ASC_DMAACTIVE;
|
||||
|
||||
/* start DMA */
|
||||
tcds_dma_enable(asc->sc_tcds, 1);
|
||||
}
|
||||
|
||||
static void
|
||||
tcds_dma_stop(sc)
|
||||
struct ncr53c9x_softc *sc;
|
||||
{
|
||||
#if 0
|
||||
struct asc_softc *asc = (struct asc_softc *)sc;
|
||||
#endif
|
||||
|
||||
/*
|
||||
* XXX STOP DMA HERE!
|
||||
*/
|
||||
}
|
||||
|
||||
/*
|
||||
* Pseudo (chained) interrupt from the asc driver to kick the
|
||||
* current running DMA transfer. Called from ncr53c9x_intr()
|
||||
* for now.
|
||||
*
|
||||
* return 1 if it was a DMA continue.
|
||||
*/
|
||||
static int
|
||||
tcds_dma_intr(sc)
|
||||
struct ncr53c9x_softc *sc;
|
||||
{
|
||||
struct asc_softc *asc = (struct asc_softc *)sc;
|
||||
struct tcds_slotconfig *tcds = asc->sc_tcds;
|
||||
int trans, resid;
|
||||
u_int32_t tcl, tcm;
|
||||
u_int32_t dud, dudmask, *addr;
|
||||
bus_addr_t pa;
|
||||
|
||||
NCR_DMA(("tcds_dma %d: intr", tcds->sc_slot));
|
||||
|
||||
if (tcds_scsi_iserr(tcds))
|
||||
return 0;
|
||||
|
||||
/* This is an "assertion" :) */
|
||||
if ((asc->sc_flags & ASC_DMAACTIVE) == 0)
|
||||
panic("tcds_dma_intr: DMA wasn't active");
|
||||
|
||||
/* DMA has stopped */
|
||||
tcds_dma_enable(tcds, 0);
|
||||
asc->sc_flags &= ~ASC_DMAACTIVE;
|
||||
|
||||
if (asc->sc_dmasize == 0) {
|
||||
/* A "Transfer Pad" operation completed */
|
||||
tcl = NCR_READ_REG(sc, NCR_TCL);
|
||||
tcm = NCR_READ_REG(sc, NCR_TCM);
|
||||
NCR_DMA(("dma_intr: discarded %d bytes (tcl=%d, tcm=%d)\n",
|
||||
tcl | (tcm << 8), tcl, tcm));
|
||||
return 0;
|
||||
}
|
||||
|
||||
resid = 0;
|
||||
if ((asc->sc_flags & ASC_ISPULLUP) == 0 &&
|
||||
(resid = (NCR_READ_REG(sc, NCR_FFLAG) & NCRFIFO_FF)) != 0) {
|
||||
NCR_DMA(("dma_intr: empty esp FIFO of %d ", resid));
|
||||
DELAY(1);
|
||||
}
|
||||
|
||||
resid += (tcl = NCR_READ_REG(sc, NCR_TCL));
|
||||
resid += (tcm = NCR_READ_REG(sc, NCR_TCM)) << 8;
|
||||
|
||||
trans = asc->sc_dmasize - resid;
|
||||
if (trans < 0) { /* transferred < 0 ? */
|
||||
printf("tcds_dma %d: xfer (%d) > req (%d)\n",
|
||||
tcds->sc_slot, trans, (int)asc->sc_dmasize);
|
||||
trans = asc->sc_dmasize;
|
||||
}
|
||||
|
||||
NCR_DMA(("dma_intr: tcl=%d, tcm=%d; trans=%d, resid=%d\n",
|
||||
tcl, tcm, trans, resid));
|
||||
|
||||
*asc->sc_dmalen -= trans;
|
||||
*asc->sc_dmaaddr += trans;
|
||||
|
||||
bus_dmamap_sync(asc->sc_dmat, asc->sc_dmamap,
|
||||
0, asc->sc_dmamap->dm_mapsize,
|
||||
(sc->sc_flags & ASC_ISPULLUP)
|
||||
? BUS_DMASYNC_POSTREAD
|
||||
: BUS_DMASYNC_POSTWRITE);
|
||||
|
||||
/*
|
||||
* Clean up unaligned DMAs into main memory.
|
||||
*/
|
||||
if (asc->sc_flags & ASC_ISPULLUP) {
|
||||
/* Handle unaligned starting address, length. */
|
||||
dud = bus_space_read_4(tcds->sc_bst,
|
||||
tcds->sc_bsh, tcds->sc_dud0);
|
||||
if ((dud & TCDS_DUD0_VALIDBITS) != 0) {
|
||||
addr = (u_int32_t *)
|
||||
((paddr_t)*asc->sc_dmaaddr & ~0x3);
|
||||
dudmask = 0;
|
||||
if (dud & TCDS_DUD0_VALID00)
|
||||
panic("tcds_dma: dud0 byte 0 valid");
|
||||
if (dud & TCDS_DUD0_VALID01)
|
||||
dudmask |= TCDS_DUD_BYTE01;
|
||||
if (dud & TCDS_DUD0_VALID10)
|
||||
dudmask |= TCDS_DUD_BYTE10;
|
||||
#ifdef DIAGNOSTIC
|
||||
if (dud & TCDS_DUD0_VALID11)
|
||||
dudmask |= TCDS_DUD_BYTE11;
|
||||
#endif
|
||||
NCR_DMA(("dud0 at 0x%p dudmask 0x%x\n",
|
||||
addr, dudmask));
|
||||
*addr = (*addr & ~dudmask) | (dud & dudmask);
|
||||
}
|
||||
dud = bus_space_read_4(tcds->sc_bst,
|
||||
tcds->sc_bsh, tcds->sc_dud1);
|
||||
if ((dud & TCDS_DUD1_VALIDBITS) != 0) {
|
||||
pa = bus_space_read_4(tcds->sc_bst, tcds->sc_bsh,
|
||||
tcds->sc_sda) << 2;
|
||||
dudmask = 0;
|
||||
if (dud & TCDS_DUD1_VALID00)
|
||||
dudmask |= TCDS_DUD_BYTE00;
|
||||
if (dud & TCDS_DUD1_VALID01)
|
||||
dudmask |= TCDS_DUD_BYTE01;
|
||||
if (dud & TCDS_DUD1_VALID10)
|
||||
dudmask |= TCDS_DUD_BYTE10;
|
||||
#ifdef DIAGNOSTIC
|
||||
if (dud & TCDS_DUD1_VALID11)
|
||||
panic("tcds_dma: dud1 byte 3 valid");
|
||||
#endif
|
||||
NCR_DMA(("dud1 at 0x%lx dudmask 0x%x\n",
|
||||
pa, dudmask));
|
||||
/* XXX Fix TC_PHYS_TO_UNCACHED() */
|
||||
#if defined(__alpha__)
|
||||
addr = (u_int32_t *)ALPHA_PHYS_TO_K0SEG(pa);
|
||||
#elif defined(__mips__)
|
||||
addr = (u_int32_t *)MIPS_PHYS_TO_KSEG1(pa);
|
||||
#else
|
||||
#error TURBOchannel only exists on DECs, folks...
|
||||
#endif
|
||||
*addr = (*addr & ~dudmask) | (dud & dudmask);
|
||||
}
|
||||
/* XXX deal with saved residual byte? */
|
||||
}
|
||||
|
||||
bus_dmamap_unload(asc->sc_dmat, asc->sc_dmamap);
|
||||
asc->sc_flags &= ~ASC_MAPLOADED;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Glue functions.
|
||||
*/
|
||||
static u_char
|
||||
asc_read_reg(sc, reg)
|
||||
struct ncr53c9x_softc *sc;
|
||||
int reg;
|
||||
{
|
||||
struct asc_softc *asc = (struct asc_softc *)sc;
|
||||
u_int32_t v;
|
||||
|
||||
v = bus_space_read_4(asc->sc_bst, asc->sc_scsi_bsh,
|
||||
reg * sizeof(u_int32_t));
|
||||
|
||||
return v & 0xff;
|
||||
}
|
||||
|
||||
static void
|
||||
asc_write_reg(sc, reg, val)
|
||||
struct ncr53c9x_softc *sc;
|
||||
int reg;
|
||||
u_char val;
|
||||
{
|
||||
struct asc_softc *asc = (struct asc_softc *)sc;
|
||||
|
||||
bus_space_write_4(asc->sc_bst, asc->sc_scsi_bsh,
|
||||
reg * sizeof(u_int32_t), val);
|
||||
}
|
||||
|
||||
static int
|
||||
tcds_dma_isintr(sc)
|
||||
struct ncr53c9x_softc *sc;
|
||||
{
|
||||
struct asc_softc *asc = (struct asc_softc *)sc;
|
||||
int x;
|
||||
|
||||
x = tcds_scsi_isintr(asc->sc_tcds, 1);
|
||||
|
||||
/* XXX */
|
||||
return x;
|
||||
}
|
||||
|
||||
static int
|
||||
tcds_dma_isactive(sc)
|
||||
struct ncr53c9x_softc *sc;
|
||||
{
|
||||
struct asc_softc *asc = (struct asc_softc *)sc;
|
||||
|
||||
return !!(asc->sc_flags & ASC_DMAACTIVE);
|
||||
}
|
||||
|
||||
static void
|
||||
tcds_clear_latched_intr(sc)
|
||||
struct ncr53c9x_softc *sc;
|
||||
{
|
||||
struct asc_softc *asc = (struct asc_softc *)sc;
|
||||
|
||||
/* Clear the TCDS interrupt bit. */
|
||||
(void)tcds_scsi_isintr(asc->sc_tcds, 1);
|
||||
}
|
||||
@ -1,4 +1,4 @@
|
||||
/* $NetBSD: tcds.c,v 1.30 2000/06/05 21:47:32 thorpej Exp $ */
|
||||
/* $NetBSD: tcds.c,v 1.1 2000/07/04 02:22:19 nisimura Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 1998 The NetBSD Foundation, Inc.
|
||||
@ -66,7 +66,7 @@
|
||||
|
||||
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
|
||||
|
||||
__KERNEL_RCSID(0, "$NetBSD: tcds.c,v 1.30 2000/06/05 21:47:32 thorpej Exp $");
|
||||
__KERNEL_RCSID(0, "$NetBSD: tcds.c,v 1.1 2000/07/04 02:22:19 nisimura Exp $");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/kernel.h>
|
||||
@ -78,33 +78,27 @@ __KERNEL_RCSID(0, "$NetBSD: tcds.c,v 1.30 2000/06/05 21:47:32 thorpej Exp $");
|
||||
#include <machine/rpb.h>
|
||||
#endif /* __alpha__ */
|
||||
|
||||
#include <machine/bus.h>
|
||||
|
||||
#include <dev/tc/tcreg.h>
|
||||
#include <dev/tc/tcvar.h>
|
||||
#include <alpha/tc/tcdsreg.h>
|
||||
#include <alpha/tc/tcdsvar.h>
|
||||
|
||||
#include <dev/scsipi/scsipi_all.h>
|
||||
#include <dev/scsipi/scsi_all.h>
|
||||
#include <dev/scsipi/scsipiconf.h>
|
||||
#include <dev/scsipi/scsipi_all.h>
|
||||
#include <dev/scsipi/scsiconf.h>
|
||||
|
||||
#include <dev/ic/ncr53c9xvar.h>
|
||||
|
||||
#include <machine/bus.h>
|
||||
|
||||
#include <dev/tc/tcvar.h>
|
||||
#include <dev/tc/tcdsreg.h>
|
||||
#include <dev/tc/tcdsvar.h>
|
||||
|
||||
#include "locators.h"
|
||||
|
||||
struct tcds_softc {
|
||||
struct device sc_dv;
|
||||
|
||||
bus_space_tag_t sc_bst;
|
||||
bus_space_handle_t sc_bsh;
|
||||
|
||||
bus_dma_tag_t sc_dmat;
|
||||
|
||||
void *sc_cookie;
|
||||
|
||||
int sc_flags;
|
||||
|
||||
struct tcds_slotconfig sc_slots[2];
|
||||
};
|
||||
|
||||
@ -176,7 +170,7 @@ tcdsattach(parent, self, aux)
|
||||
struct tcds_slotconfig *slotc;
|
||||
struct tcds_device *td;
|
||||
bus_space_handle_t sbsh[2];
|
||||
int i, error, gpi2;
|
||||
int i, gpi2;
|
||||
const struct evcnt *pevcnt;
|
||||
char *cp;
|
||||
|
||||
@ -255,15 +249,8 @@ tcdsattach(parent, self, aux)
|
||||
slotc->sc_slot = i;
|
||||
slotc->sc_bst = sc->sc_bst;
|
||||
slotc->sc_bsh = sc->sc_bsh;
|
||||
slotc->sc_asc = NULL;
|
||||
slotc->sc_intrhand = tcds_intrnull;
|
||||
slotc->sc_intrarg = (void *)(long)i;
|
||||
slotc->sc_dmat = sc->sc_dmat;
|
||||
if ((error = tcds_dma_init(slotc)) != 0) {
|
||||
printf("%s: tcds_dma_init failed, error = %d\n",
|
||||
sc->sc_dv.dv_xname, error);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
/* information for slot 0 */
|
||||
@ -299,6 +286,7 @@ tcdsattach(parent, self, aux)
|
||||
|
||||
tcdsdev.tcdsda_bst = sc->sc_bst;
|
||||
tcdsdev.tcdsda_bsh = sbsh[i];
|
||||
tcdsdev.tcdsda_dmat = sc->sc_dmat;
|
||||
tcdsdev.tcdsda_chip = i;
|
||||
tcdsdev.tcdsda_sc = &sc->sc_slots[i];
|
||||
/*
|
||||
@ -1,4 +1,4 @@
|
||||
/* $NetBSD: tcdsreg.h,v 1.5 1998/05/26 22:48:01 thorpej Exp $ */
|
||||
/* $NetBSD: tcdsreg.h,v 1.1 2000/07/04 02:22:20 nisimura Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1994, 1995 Carnegie-Mellon University.
|
||||
@ -1,4 +1,4 @@
|
||||
/* $NetBSD: tcdsvar.h,v 1.13 2000/06/05 21:47:33 thorpej Exp $ */
|
||||
/* $NetBSD: tcdsvar.h,v 1.1 2000/07/04 02:22:21 nisimura Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
|
||||
@ -36,8 +36,6 @@ struct tcds_slotconfig {
|
||||
bus_space_tag_t sc_bst; /* to frob TCDS regs */
|
||||
bus_space_handle_t sc_bsh;
|
||||
|
||||
struct asc_tcds_softc *sc_asc; /* to frob child's regs */
|
||||
|
||||
int (*sc_intrhand) __P((void *)); /* intr. handler */
|
||||
void *sc_intrarg; /* intr. handler arg. */
|
||||
struct evcnt sc_evcnt; /* intr. count */
|
||||
@ -59,22 +57,12 @@ struct tcds_slotconfig {
|
||||
bus_size_t sc_dic;
|
||||
bus_size_t sc_dud0;
|
||||
bus_size_t sc_dud1;
|
||||
|
||||
/*
|
||||
* DMA bookkeeping information.
|
||||
*/
|
||||
bus_dma_tag_t sc_dmat;
|
||||
bus_dmamap_t sc_dmamap;
|
||||
int sc_active; /* DMA active ? */
|
||||
int sc_ispullup; /* DMA into main memory? */
|
||||
size_t sc_dmasize;
|
||||
caddr_t *sc_dmaaddr;
|
||||
size_t *sc_dmalen;
|
||||
};
|
||||
|
||||
struct tcdsdev_attach_args {
|
||||
bus_space_tag_t tcdsda_bst; /* bus space tag */
|
||||
bus_space_handle_t tcdsda_bsh; /* bus space handle */
|
||||
bus_dma_tag_t tcdsda_dmat; /* bus dma tag */
|
||||
struct tcds_slotconfig *tcdsda_sc; /* slot configuration */
|
||||
int tcdsda_chip; /* chip number */
|
||||
int tcdsda_id; /* SCSI ID */
|
||||
@ -95,19 +83,3 @@ void tcds_scsi_enable __P((struct tcds_slotconfig *, int));
|
||||
int tcds_scsi_iserr __P((struct tcds_slotconfig *));
|
||||
int tcds_scsi_isintr __P((struct tcds_slotconfig *, int));
|
||||
void tcds_scsi_reset __P((struct tcds_slotconfig *));
|
||||
|
||||
/*
|
||||
* TCDS DMA functions (used by the 53c94 driver)
|
||||
*/
|
||||
int tcds_dma_isintr __P((struct tcds_slotconfig *));
|
||||
void tcds_dma_reset __P((struct tcds_slotconfig *));
|
||||
int tcds_dma_intr __P((struct tcds_slotconfig *));
|
||||
int tcds_dma_setup __P((struct tcds_slotconfig *, caddr_t *, size_t *,
|
||||
int, size_t *));
|
||||
void tcds_dma_go __P((struct tcds_slotconfig *));
|
||||
int tcds_dma_isactive __P((struct tcds_slotconfig *));
|
||||
|
||||
/*
|
||||
* TCDS DMA functions (private to TCDS)
|
||||
*/
|
||||
int tcds_dma_init __P((struct tcds_slotconfig *));
|
||||
Loading…
Reference in New Issue
Block a user