[src/trunk]: src/sys/arch/powerpc Add IBM405GPr "External Bus" driver.

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

details:   https://anonhg.NetBSD.org/src/rev/2fa4c7f4f00b
branches:  trunk
changeset: 758511:2fa4c7f4f00b
user:      uebayasi <uebayasi%NetBSD.org@localhost>
date:      Sat Nov 06 16:30:15 2010 +0000

description:
Add IBM405GPr "External Bus" driver.

diffstat:

 sys/arch/powerpc/conf/files.ibm4xx   |    7 +-
 sys/arch/powerpc/ibm4xx/dev/exb.c    |  138 +++++++++++++++++++++++++++++++++++
 sys/arch/powerpc/ibm4xx/dev/exbvar.h |   46 +++++++++++
 sys/arch/powerpc/ibm4xx/dev/plb.c    |    5 +-
 4 files changed, 193 insertions(+), 3 deletions(-)

diffs (236 lines):

diff -r 66679f0abb7b -r 2fa4c7f4f00b sys/arch/powerpc/conf/files.ibm4xx
--- a/sys/arch/powerpc/conf/files.ibm4xx        Sat Nov 06 16:23:35 2010 +0000
+++ b/sys/arch/powerpc/conf/files.ibm4xx        Sat Nov 06 16:30:15 2010 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: files.ibm4xx,v 1.11 2010/03/18 13:58:38 kiyohara Exp $
+#      $NetBSD: files.ibm4xx,v 1.12 2010/11/06 16:30:15 uebayasi Exp $
 #
 # IBM 4xx specific configuration info
 
@@ -69,3 +69,8 @@
 device gpiic: i2cbus, i2c_bitbang
 attach gpiic at opb
 file   arch/powerpc/ibm4xx/dev/gpiic_opb.c     gpiic
+
+# External bus
+#device exb {[addr = -1]}
+#attach exb at plb
+#file  arch/powerpc/ibm4xx/dev/exb.c           exb
diff -r 66679f0abb7b -r 2fa4c7f4f00b sys/arch/powerpc/ibm4xx/dev/exb.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/powerpc/ibm4xx/dev/exb.c Sat Nov 06 16:30:15 2010 +0000
@@ -0,0 +1,138 @@
+/*     $Id: exb.c,v 1.2 2010/11/06 16:30:15 uebayasi Exp $     */
+
+/*-
+ * Copyright (c) 2010 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software developed for The NetBSD Foundation
+ * by Masao Uebayashi.
+ *
+ * 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.
+ *
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: exb.c,v 1.2 2010/11/06 16:30:15 uebayasi Exp $");
+
+#include "locators.h"
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/extent.h>
+#include <sys/bus.h>
+
+#include <powerpc/ibm4xx/dcr4xx.h>
+#include <powerpc/ibm4xx/dev/exbvar.h>
+
+struct exb_softc {
+};
+
+extern const struct exb_conf exb_confs[];
+
+static int exb_match(device_t, struct cfdata *, void *);
+static void exb_attach(device_t, struct device *, void *);
+static int exb_print(void *, const char *);
+
+CFATTACH_DECL_NEW(exb, sizeof(struct exb_softc), exb_match, exb_attach,
+    NULL, NULL);
+
+static struct powerpc_bus_space exb_bus_space_tag =
+    { _BUS_SPACE_BIG_ENDIAN | _BUS_SPACE_MEM_TYPE, 0 };
+
+static int
+exb_match(device_t parent, struct cfdata *cf, void *aux)
+{
+
+       return 1;
+}
+
+static void
+exb_attach(device_t parent, device_t self, void *aux)
+{
+       const struct exb_conf *ec = exb_confs;
+       uint32_t ebc0_bNcr;
+       bus_addr_t base, size;
+       int locs[EXBCF_NLOCS];
+
+       printf("\n");
+
+       /* mtdcr needs a constant */
+       switch (device_unit(self)) {
+       case 0: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B0CR); break;
+       case 1: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B1CR); break;
+       case 2: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B2CR); break;
+       case 3: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B3CR); break;
+       case 4: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B4CR); break;
+       case 5: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B5CR); break;
+       case 6: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B6CR); break;
+       case 7: mtdcr(DCR_EBC0_CFGADDR, DCR_EBC0_B7CR); break;
+       }
+       ebc0_bNcr = mfdcr(DCR_EBC0_CFGDATA);
+       base = ebc0_bNcr & 0xfff00000;
+       size = 0x00100000 << ((ebc0_bNcr & 0x000e0000) >> 17);
+
+       exb_bus_space_tag.pbs_base = base;
+       exb_bus_space_tag.pbs_limit = base + size - 1;
+
+       while (ec->ec_name) {
+               struct exb_conf ec1;
+
+               locs[EXBCF_ADDR] = ec->ec_addr;
+
+               ec1 = *ec;
+               ec1.ec_bust = exb_get_bus_space_tag();
+
+               config_found_sm_loc(self, "exb", locs, &ec1, exb_print,
+                   config_stdsubmatch);
+               ec++;
+       }
+}
+
+static int
+exb_print(void *aux, const char *bus)
+{
+       struct exb_conf *ec = aux;
+
+       if (bus)
+               return QUIET;
+
+       if (ec->ec_addr)
+               printf(" addr %"PRIxBUSADDR, ec->ec_addr);
+
+       return UNCONF;
+}
+
+bus_space_tag_t
+exb_get_bus_space_tag(void)
+{
+       static char ex_storage[EXTENT_FIXED_STORAGE_SIZE(8)]
+           __attribute__((aligned(8)));
+       static int exb_bus_space_tag_inited;
+
+       if (exb_bus_space_tag_inited == 0) {
+               if (bus_space_init(&exb_bus_space_tag, "exbtag",
+                   ex_storage, sizeof(ex_storage)))
+                       panic("exb_attach: Failed to initialise exb_bus_space_tag");
+               exb_bus_space_tag_inited = 1;
+       }
+       return &exb_bus_space_tag;
+}
diff -r 66679f0abb7b -r 2fa4c7f4f00b sys/arch/powerpc/ibm4xx/dev/exbvar.h
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/powerpc/ibm4xx/dev/exbvar.h      Sat Nov 06 16:30:15 2010 +0000
@@ -0,0 +1,46 @@
+/*     $Id: exbvar.h,v 1.2 2010/11/06 16:30:15 uebayasi Exp $  */
+
+/*-
+ * Copyright (c) 2010 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software developed for The NetBSD Foundation
+ * by Masao Uebayashi.
+ *
+ * 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.
+ *
+ * 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.
+ */
+
+#ifndef _POWERPC_IBM4XX_DEV_EXBVAR_H_
+#define _POWERPC_IBM4XX_DEV_EXBVAR_H_
+
+struct exb_conf {
+       const char *ec_name;
+
+       bus_addr_t ec_addr;
+       bus_size_t ec_size;
+
+       bus_space_tag_t ec_bust;
+};
+
+bus_space_tag_t exb_get_bus_space_tag(void);
+
+#endif /* _POWERPC_IBM4XX_DEV_EXBVAR_H_ */
diff -r 66679f0abb7b -r 2fa4c7f4f00b sys/arch/powerpc/ibm4xx/dev/plb.c
--- a/sys/arch/powerpc/ibm4xx/dev/plb.c Sat Nov 06 16:23:35 2010 +0000
+++ b/sys/arch/powerpc/ibm4xx/dev/plb.c Sat Nov 06 16:30:15 2010 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: plb.c,v 1.15 2010/03/18 13:47:04 kiyohara Exp $ */
+/* $NetBSD: plb.c,v 1.16 2010/11/06 16:30:15 uebayasi Exp $ */
 
 /*
  * Copyright 2001 Wasabi Systems, Inc.
@@ -66,7 +66,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: plb.c,v 1.15 2010/03/18 13:47:04 kiyohara Exp $");
+__KERNEL_RCSID(0, "$NetBSD: plb.c,v 1.16 2010/11/06 16:30:15 uebayasi Exp $");
 
 #include "locators.h"
 #include "emac.h"
@@ -100,6 +100,7 @@
        { IBM405GPR,    "ecc", },
        { IBM405GPR,    "opb", },
        { IBM405GPR,    "pchb", },
+       { IBM405GPR,    "exb", },
 
        /* AMCC 405EX / EXR */
        { AMCC405EX,    "cpu", },