[src/netbsd-1-4]: src/sys/arch/sun3/dev Better implementation of driver "matc...

[gwr <gwr%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/740d4cd717b8
branches:  netbsd-1-4
changeset: 468134:740d4cd717b8
user:      gwr <gwr%NetBSD.org@localhost>
date:      Fri Apr 09 04:26:28 1999 +0000

description:
Better implementation of driver "match" function,
and warning/error cleanup.

diffstat:

 sys/arch/sun3/dev/sebuf.c    |  198 +++++++++++
 sys/arch/sun3/dev/si_sebuf.c |  762 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 960 insertions(+), 0 deletions(-)

diffs (truncated from 968 to 300 lines):

diff -r 0954a56bd666 -r 740d4cd717b8 sys/arch/sun3/dev/sebuf.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/sun3/dev/sebuf.c Fri Apr 09 04:26:28 1999 +0000
@@ -0,0 +1,198 @@
+/*     $NetBSD: sebuf.c,v 1.5.2.2 1999/04/09 04:26:28 gwr Exp $        */
+
+/*-
+ * Copyright (c) 1997 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Gordon W. Ross.
+ *
+ * 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.
+ */
+
+/*
+ * Sun3/E SCSI/Ethernet board.  This is a VME board with some memory,
+ * an Intel Ether, and an NCR5380 SCSI with a cheap DMA engine.
+ * Note that the SCSI DMA engine can ONLY access the memory on
+ * the SE board, NOT the main memory, because it can not master
+ * VME transfers.
+ *
+ * This driver ("sebuf") is the parent of two child drivers:
+ *   se: yet another variant of NCR 5380 SCSI H/W
+ *   ie: yet anotehr variant of Intel 82586 Ethernet
+ *
+ * The job of this parent is to map the memory and partition it for
+ * the two children.  This driver has no device nodes.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/conf.h>
+#include <sys/device.h>
+#include <sys/ioctl.h>
+#include <sys/malloc.h>
+#include <sys/mman.h>
+#include <sys/proc.h>
+#include <sys/tty.h>
+
+#include <vm/vm.h>
+
+#include <machine/autoconf.h>
+#include <machine/cpu.h>
+
+#include "sereg.h"
+#include "sevar.h"
+
+#define        offsetof(type, member) ((size_t)(&((type *)0)->member))
+
+struct sebuf_softc {
+       struct  device sc_dev;          /* base device (required) */
+       struct sebuf_regs *sc_regs;
+};
+
+/*
+ * Autoconfig attachment
+ */
+
+static int  sebuf_match __P((struct device *, struct cfdata *, void *));
+static void sebuf_attach __P((struct device *, struct device *, void *));
+static int  sebuf_print __P((void *, const char *));
+
+struct cfattach sebuf_ca = {
+       sizeof(struct sebuf_softc), sebuf_match, sebuf_attach
+};
+
+static int
+sebuf_match(parent, cf, args)
+       struct device *parent;
+       struct cfdata *cf;
+       void *args;
+{
+       struct confargs *ca = args;
+       struct se_regs *sreg;
+       struct ie_regs *ereg;
+       int pa, x;
+
+       if (ca->ca_paddr == -1)
+               return (0);
+
+       /* Is it there at all? */
+       pa = ca->ca_paddr;
+       x = bus_peek(ca->ca_bustype, pa, 2);
+       if (x == -1)
+               return (0);
+
+       /* Look at the CSR for the SCSI part. */
+       pa = ca->ca_paddr + offsetof(struct sebuf_regs, se_scsi_regs);
+       sreg = bus_tmapin(ca->ca_bustype, pa);
+       /* Write some bits that are wired to zero. */
+       sreg->se_csr = 0xFFF3;
+       x = peek_word((caddr_t)(&sreg->se_csr));
+       bus_tmapout(sreg);
+       if ((x == -1) || (x & 0xFCF0)) {
+#ifdef DEBUG
+               printf("sebuf_match: SCSI csr=0x%x\n", x);
+#endif
+               return (0);
+       }
+
+       /* Look at the CSR for the Ethernet part. */
+       pa = ca->ca_paddr + offsetof(struct sebuf_regs, se_eth_regs);
+       ereg = bus_tmapin(ca->ca_bustype, pa);
+       /* Write some bits that are wired to zero. */
+       ereg->ie_csr = 0x0FFF;
+       x = peek_word((caddr_t)(&ereg->ie_csr));
+       bus_tmapout(ereg);
+       if ((x == -1) || (x & 0xFFF)) {
+#ifdef DEBUG
+               printf("sebuf_match: Ether csr=0x%x\n", x);
+#endif
+               return (0);
+       }
+
+       /* Default interrupt priority always splbio==2 */
+       if (ca->ca_intpri == -1)
+               ca->ca_intpri = 2;
+
+       return (1);
+}
+
+static void
+sebuf_attach(parent, self, args)
+       struct device *parent, *self;
+       void *args;
+{
+       struct sebuf_softc *sc = (struct sebuf_softc *)self;
+       struct confargs *ca = args;
+       struct sebuf_attach_args aa;
+       struct sebuf_regs *regs;
+
+       printf("\n");
+
+       if (ca->ca_intpri != 2)
+               panic("sebuf: bad level");
+
+       /* Map in the whole board. */
+       regs = (struct sebuf_regs *)
+               bus_mapin(ca->ca_bustype, ca->ca_paddr,
+                         sizeof(struct sebuf_regs));
+       if (regs == NULL)
+               panic("sebuf_attach");
+       sc->sc_regs = regs;
+
+       /* Attach the SCSI child. */
+       aa.ca = *ca;    /* structure copy */
+       aa.ca.ca_paddr = 0; /* prevent misuse */
+       aa.name = "se";
+       aa.buf  = &regs->se_scsi_buf[0];
+       aa.blen = SE_NCRBUFSIZE;
+       aa.regs = &regs->se_scsi_regs;
+       (void) config_found(self, (void *) &aa, sebuf_print);
+
+       /* Attach the Ethernet child. */
+       aa.ca.ca_intpri++;
+       aa.ca.ca_intvec++;
+       aa.name = "ie";
+       aa.buf  = &regs->se_eth_buf[0];
+       aa.blen = SE_IEBUFSIZE;
+       aa.regs = &regs->se_eth_regs;
+       (void) config_found(self, (void *) &aa, sebuf_print);
+}
+
+static int
+sebuf_print(aux, name)
+       void *aux;
+       const char *name;
+{
+
+       if (name != NULL)
+               printf("%s: ", name);
+
+       return UNCONF;
+}
diff -r 0954a56bd666 -r 740d4cd717b8 sys/arch/sun3/dev/si_sebuf.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/sun3/dev/si_sebuf.c      Fri Apr 09 04:26:28 1999 +0000
@@ -0,0 +1,762 @@
+/*     $NetBSD: si_sebuf.c,v 1.8.2.2 1999/04/09 04:26:28 gwr Exp $     */
+
+/*-
+ * Copyright (c) 1996 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Gordon W. Ross.
+ *
+ * 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.
+ */
+
+/*
+ * Sun3/E SCSI driver (machine-dependent portion).
+ * The machine-independent parts are in ncr5380sbc.c
+ *
+ * XXX - Mostly from the si driver.  Merge?
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/errno.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+#include <sys/device.h>
+#include <sys/buf.h>
+#include <sys/proc.h>
+#include <sys/user.h>
+
+#include <dev/scsipi/scsi_all.h>
+#include <dev/scsipi/scsipi_all.h>
+#include <dev/scsipi/scsipi_debug.h>
+#include <dev/scsipi/scsiconf.h>
+
+#include <machine/autoconf.h>
+
+/* #define DEBUG XXX */
+
+#include <dev/ic/ncr5380reg.h>
+#include <dev/ic/ncr5380var.h>
+
+#include "sereg.h"
+#include "sevar.h"
+
+/*
+ * Transfers smaller than this are done using PIO
+ * (on assumption they're not worth DMA overhead)
+ */
+#define        MIN_DMA_LEN 128
+
+/*
+ * Transfers lager than 65535 bytes need to be split-up.
+ * (Some of the FIFO logic has only 16 bits counters.)
+ * Make the size an integer multiple of the page size
+ * to avoid buf/cluster remap problems.  (paranoid?)
+ */
+#define        MAX_DMA_LEN 0xE000
+
+/*
+ * This structure is used to keep track of mapped DMA requests.
+ */
+struct se_dma_handle {
+       int             dh_flags;
+#define        SIDH_BUSY       1               /* This DH is in use */
+#define        SIDH_OUT        2               /* DMA does data out (write) */
+       u_char *        dh_addr;        /* KVA of start of buffer */
+       int             dh_maplen;      /* Length of KVA mapping. */
+       long            dh_dma;         /* Offset in DMA buffer. */