sh: L-BOX RE2 support.

This adds support for the L-BOX RE2 router.

	http://www.nttcom.co.jp/l-box/

L-BOX RE2 is a SH7751R-based router. It has CF, Cardbus, serial,
and LAN x2. This is one of the very few SH boards that a general
person can obtain now.

The L-BOX shipped with a 2.4.28 kernel, this is a rewritten patch
adding it to current git.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

4 files changed, 106 insertions, 1 deletions

diff --git a/arch/sh/drivers/pci/Makefile b/arch/sh/drivers/pci/Makefile
index 8a7e70651939..b1391cb080d1 100644
--- a/arch/sh/drivers/pci/Makefile
+++ b/arch/sh/drivers/pci/Makefile
@@ -18,3 +18,4 @@ obj-$(CONFIG_SH_SH03)			+= ops-sh03.o fixups-sh03.o
 obj-$(CONFIG_SH_HIGHLANDER)             += ops-r7780rp.o fixups-r7780rp.o
 obj-$(CONFIG_SH_TITAN)                  += ops-titan.o
 obj-$(CONFIG_SH_LANDISK)                += ops-landisk.o
+obj-$(CONFIG_SH_LBOX_RE2)               += ops-lboxre2.o fixups-lboxre2.o
diff --git a/arch/sh/drivers/pci/fixups-lboxre2.c b/arch/sh/drivers/pci/fixups-lboxre2.c
new file mode 100644
index 000000000000..40b19bdfb891
--- /dev/null
+++ b/arch/sh/drivers/pci/fixups-lboxre2.c
@@ -0,0 +1,41 @@
+/*
+ * arch/sh/drivers/pci/fixups-lboxre2.c
+ *
+ * L-BOX RE2 PCI fixups
+ *
+ * Copyright (C) 2007 Nobuhiro Iwamatsu
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include "pci-sh4.h"
+
+#define PCIMCR_MRSET_OFF        0xBFFFFFFF
+#define PCIMCR_RFSH_OFF         0xFFFFFFFB
+
+int pci_fixup_pcic(void)
+{
+        unsigned long bcr1, mcr;
+
+        bcr1 = inl(SH7751_BCR1);
+        bcr1 |= 0x40080000;     /* Enable Bit 19 BREQEN, set PCIC to slave */
+        pci_write_reg(bcr1, SH4_PCIBCR1);
+
+        /* Enable all interrupts, so we known what to fix */
+        pci_write_reg(0x0000c3ff, SH4_PCIINTM);
+        pci_write_reg(0x0000380f, SH4_PCIAINTM);
+        pci_write_reg(0xfb900047, SH7751_PCICONF1);
+        pci_write_reg(0xab000001, SH7751_PCICONF4);
+
+        mcr = inl(SH7751_MCR);
+        mcr = (mcr & PCIMCR_MRSET_OFF) & PCIMCR_RFSH_OFF;
+        pci_write_reg(mcr, SH4_PCIMCR);
+
+        pci_write_reg(0x0c000000, SH7751_PCICONF5);
+        pci_write_reg(0xd0000000, SH7751_PCICONF6);
+        pci_write_reg(0x0c000000, SH4_PCILAR0);
+        pci_write_reg(0x00000000, SH4_PCILAR1);
+
+        return 0;
+}
diff --git a/arch/sh/drivers/pci/ops-lboxre2.c b/arch/sh/drivers/pci/ops-lboxre2.c
new file mode 100644
index 000000000000..a13cb764b0b9
--- /dev/null
+++ b/arch/sh/drivers/pci/ops-lboxre2.c
@@ -0,0 +1,63 @@
+/*
+ * linux/arch/sh/drivers/pci/ops-lboxre2.c
+ *
+ * Copyright (C) 2007 Nobuhiro Iwamatsu
+ *
+ * PCI initialization for the NTT COMWARE L-BOX RE2
+ */
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/io.h>
+#include <asm/lboxre2.h>
+#include "pci-sh4.h"
+
+static char lboxre2_irq_tab[] __initdata = {
+        IRQ_ETH0, IRQ_ETH1, IRQ_INTA, IRQ_INTD,
+};
+
+int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
+{
+        return lboxre2_irq_tab[slot];
+}
+
+static struct resource sh7751_io_resource = {
+        .name   = "SH7751_IO",
+        .start  = SH7751_PCI_IO_BASE ,
+        .end    = SH7751_PCI_IO_BASE + SH7751_PCI_IO_SIZE - 1,
+        .flags  = IORESOURCE_IO
+};
+
+static struct resource sh7751_mem_resource = {
+        .name   = "SH7751_mem",
+        .start  = SH7751_PCI_MEMORY_BASE,
+        .end    = SH7751_PCI_MEMORY_BASE + SH7751_PCI_MEM_SIZE - 1,
+        .flags  = IORESOURCE_MEM
+};
+
+extern struct pci_ops sh7751_pci_ops;
+
+struct pci_channel board_pci_channels[] = {
+        { &sh4_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0xff },
+        { NULL, NULL, NULL, 0, 0 },
+};
+
+EXPORT_SYMBOL(board_pci_channels);
+
+static struct sh4_pci_address_map sh7751_pci_map = {
+        .window0        = {
+                .base   = SH7751_CS3_BASE_ADDR,
+                .size   = 0x04000000,
+        },
+        .window1        = {
+                .base   = 0x00000000,   /* Unused */
+                .size   = 0x00000000,   /* Unused */
+        },
+        .flags  = SH4_PCIC_NO_RESET,
+};
+
+int __init pcibios_init_platform(void)
+{
+        return sh7751_pcic_init(&sh7751_pci_map);
+}
diff --git a/arch/sh/drivers/pci/pci-sh7751.c b/arch/sh/drivers/pci/pci-sh7751.c
index 9ddff760d3c6..f3ead58a9519 100644
--- a/arch/sh/drivers/pci/pci-sh7751.c
+++ b/arch/sh/drivers/pci/pci-sh7751.c
@@ -194,7 +194,7 @@ int __init sh7751_pcic_init(struct sh4_pci_address_map *map)
          * DMA interrupts...
          */
 
-#ifdef CONFIG_SH_RTS7751R2D
+#if defined(CONFIG_SH_RTS7751R2D) || defined(CONFIG_SH_LBOX_RE2)
         pci_fixup_pcic();
 #endif