sh: se7780 PCI support.

Add support for the SH7780 PCIC on the Solution Engine 7780,
missing from the previous board-support patch.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.zh@hitachi.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

3 files changed, 157 insertions, 0 deletions

diff --git a/arch/sh/drivers/pci/Makefile b/arch/sh/drivers/pci/Makefile
index b1391cb080d1..0e9b532b9fbc 100644
--- a/arch/sh/drivers/pci/Makefile
+++ b/arch/sh/drivers/pci/Makefile
@@ -19,3 +19,4 @@ 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
+obj-$(CONFIG_SH_7780_SOLUTION_ENGINE)   += ops-se7780.o fixups-se7780.o
diff --git a/arch/sh/drivers/pci/fixups-se7780.c b/arch/sh/drivers/pci/fixups-se7780.c
new file mode 100644
index 000000000000..880cea1c0d89
--- /dev/null
+++ b/arch/sh/drivers/pci/fixups-se7780.c
@@ -0,0 +1,60 @@
+/*
+ * arch/sh/drivers/pci/fixups-se7780.c
+ *
+ * HITACHI UL Solution Engine 7780  PCI fixups
+ *
+ * Copyright (C) 2003  Lineo uSolutions, Inc.
+ * Copyright (C) 2004 - 2006  Paul Mundt
+ * Copyright (C) 2006  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 <linux/pci.h>
+#include "pci-sh4.h"
+#include <asm/io.h>
+
+int pci_fixup_pcic(void)
+{
+        ctrl_outl(0x00000001, SH7780_PCI_VCR2);
+
+        /* Enable all interrupts, so we know what to fix */
+        pci_write_reg(0x0000C3FF, SH7780_PCIIMR);
+        pci_write_reg(0x0000380F, SH7780_PCIAINTM);
+
+        /* Set up standard PCI config registers */
+        ctrl_outw(0xFB00, PCI_REG(SH7780_PCISTATUS));
+        ctrl_outw(0x0047, PCI_REG(SH7780_PCICMD));
+        ctrl_outb(  0x00, PCI_REG(SH7780_PCIPIF));
+        ctrl_outb(  0x00, PCI_REG(SH7780_PCISUB));
+        ctrl_outb(  0x06, PCI_REG(SH7780_PCIBCC));
+        ctrl_outw(0x1912, PCI_REG(SH7780_PCISVID));
+        ctrl_outw(0x0001, PCI_REG(SH7780_PCISID));
+
+        pci_write_reg(0x08000000, SH7780_PCIMBAR0);     /* PCI */
+        pci_write_reg(0x08000000, SH7780_PCILAR0);     /* SHwy */
+        pci_write_reg(0x07F00001, SH7780_PCILSR);      /* size 128M w/ MBAR */
+
+        pci_write_reg(0x00000000, SH7780_PCIMBAR1);
+        pci_write_reg(0x00000000, SH7780_PCILAR1);
+        pci_write_reg(0x00000000, SH7780_PCILSR1);
+
+        pci_write_reg(0xAB000801, SH7780_PCIIBAR);
+
+        /*
+         * Set the MBR so PCI address is one-to-one with window,
+         * meaning all calls go straight through... use ifdef to
+         * catch erroneous assumption.
+         */
+        pci_write_reg(0xFD000000 , SH7780_PCIMBR0);
+        pci_write_reg(0x00FC0000 , SH7780_PCIMBMR0);    /* 16M */
+
+        /* Set IOBR for window containing area specified in pci.h */
+        pci_write_reg(PCIBIOS_MIN_IO & ~(SH7780_PCI_IO_SIZE-1), SH7780_PCIIOBR);
+        pci_write_reg((SH7780_PCI_IO_SIZE-1) & (7 << 18), SH7780_PCIIOBMR);
+
+        pci_write_reg(0xA5000C01, SH7780_PCICR);
+
+        return 0;
+}
diff --git a/arch/sh/drivers/pci/ops-se7780.c b/arch/sh/drivers/pci/ops-se7780.c
new file mode 100644
index 000000000000..212674df5e13
--- /dev/null
+++ b/arch/sh/drivers/pci/ops-se7780.c
@@ -0,0 +1,96 @@
+/*
+ * linux/arch/sh/drivers/pci/ops-se7780.c
+ *
+ * Copyright (C) 2006  Nobuhiro Iwamatsu
+ *
+ * PCI initialization for the Hitachi UL Solution Engine 7780SE03
+ *
+ * May be copied or modified under the terms of the GNU General Public
+ * License.  See linux/COPYING for more information.
+ */
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <asm/se7780.h>
+#include <asm/io.h>
+#include "pci-sh4.h"
+
+/*
+ * IDSEL = AD16  PCI slot
+ * IDSEL = AD17  PCI slot
+ * IDSEL = AD18  Serial ATA Controller (Silicon Image SiL3512A)
+ * IDSEL = AD19  USB Host Controller (NEC uPD7210100A)
+ */
+
+/* IDSEL [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] */
+static char se7780_irq_tab[4][16] __initdata = {
+        /* INTA */
+        { 65, 68, 67, 68, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
+        /* INTB */
+        { 66, 65, -1, 65, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
+        /* INTC */
+        { 67, 66, -1, 66, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
+        /* INTD */
+        { 68, 67, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 },
+};
+
+int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
+{
+       return se7780_irq_tab[pin-1][slot];
+}
+
+static struct resource se7780_io_resource = {
+        .name   = "SH7780_IO",
+        .start  = 0x2000,
+        .end    = 0x2000 + SH7780_PCI_IO_SIZE - 1,
+        .flags  = IORESOURCE_IO
+};
+
+static struct resource se7780_mem_resource = {
+        .name   = "SH7780_mem",
+        .start  = SH7780_PCI_MEMORY_BASE,
+        .end    = SH7780_PCI_MEMORY_BASE + SH7780_PCI_MEM_SIZE - 1,
+        .flags  = IORESOURCE_MEM
+};
+
+extern struct pci_ops se7780_pci_ops;
+
+struct pci_channel board_pci_channels[] = {
+        { &sh4_pci_ops, &se7780_io_resource, &se7780_mem_resource, 0, 0xff },
+        { NULL, NULL, NULL, 0, 0 },
+};
+EXPORT_SYMBOL(board_pci_channels);
+
+static struct sh4_pci_address_map se7780_pci_map = {
+        .window0        = {
+                .base   = SH7780_CS2_BASE_ADDR,
+                .size   = 0x04000000,
+        },
+        .flags  = SH4_PCIC_NO_RESET,
+};
+
+int __init pcibios_init_platform(void)
+{
+        printk("SH7780 PCI: Finished initialization of the PCI controller\n");
+
+        /*
+         * FPGA PCISEL register initialize
+         *
+         *  CPU  || SLOT1 | SLOT2 | S-ATA | USB
+         *  -------------------------------------
+         *  INTA || INTA  | INTD  |  --   | INTB
+         *  -------------------------------------
+         *  INTB || INTB  | INTA  |  --   | INTC
+         *  -------------------------------------
+         *  INTC || INTC  | INTB  | INTA  |  --
+         *  -------------------------------------
+         *  INTD || INTD  | INTC  |  --   | INTA
+         *  -------------------------------------
+         */
+        ctrl_outw(0x0013, FPGA_PCI_INTSEL1);
+        ctrl_outw(0xE402, FPGA_PCI_INTSEL2);
+
+        return sh7780_pcic_init(&se7780_pci_map);
+}