[ARM] 3851/1: iop3xx: add io-data glantank support

Add support for the IO-Data GLAN Tank, from Martin Michlmayr.

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

5 files changed, 206 insertions, 1 deletions

diff --git a/arch/arm/configs/iop32x_defconfig b/arch/arm/configs/iop32x_defconfig
index af3b40c0508a..0d67f66e78c2 100644
--- a/arch/arm/configs/iop32x_defconfig
+++ b/arch/arm/configs/iop32x_defconfig
@@ -126,6 +126,7 @@ CONFIG_ARCH_IOP32X=y
 #
 # IOP32x Platform Types
 #
+CONFIG_MACH_GLANTANK=y
 CONFIG_ARCH_IQ80321=y
 CONFIG_ARCH_IQ31244=y
 CONFIG_MACH_N2100=y
diff --git a/arch/arm/mach-iop32x/Kconfig b/arch/arm/mach-iop32x/Kconfig
index 0a397a4a6ac9..c072d94070da 100644
--- a/arch/arm/mach-iop32x/Kconfig
+++ b/arch/arm/mach-iop32x/Kconfig
@@ -4,6 +4,13 @@ menu "IOP32x Implementation Options"
 
 comment "IOP32x Platform Types"
 
+config MACH_GLANTANK
+        bool "Enable support for the IO-Data GLAN Tank"
+        help
+          Say Y here if you want to run your kernel on the GLAN Tank
+          NAS appliance or machines from IO-Data's HDL-Gxxx, HDL-GWxxx
+          and HDL-GZxxx series.
+
 config ARCH_IQ80321
         bool "Enable support for IQ80321"
         help
diff --git a/arch/arm/mach-iop32x/Makefile b/arch/arm/mach-iop32x/Makefile
index 9c62470cd4f5..7b05b37e1f94 100644
--- a/arch/arm/mach-iop32x/Makefile
+++ b/arch/arm/mach-iop32x/Makefile
@@ -7,6 +7,7 @@ obj-m			:=
 obj-n                   :=
 obj-                    :=
 
+obj-$(CONFIG_MACH_GLANTANK) += glantank.o
 obj-$(CONFIG_ARCH_IQ80321) += iq80321.o
 obj-$(CONFIG_ARCH_IQ31244) += iq31244.o
 obj-$(CONFIG_MACH_N2100) += n2100.o
diff --git a/arch/arm/mach-iop32x/glantank.c b/arch/arm/mach-iop32x/glantank.c
new file mode 100644
index 000000000000..b9b765057dbe
--- /dev/null
+++ b/arch/arm/mach-iop32x/glantank.c
@@ -0,0 +1,195 @@
+/*
+ * arch/arm/mach-iop32x/glantank.c
+ *
+ * Board support code for the GLAN Tank.
+ *
+ * Copyright (C) 2006 Martin Michlmayr <tbm@cyrius.com>
+ * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/serial_core.h>
+#include <linux/serial_8250.h>
+#include <linux/mtd/physmap.h>
+#include <linux/platform_device.h>
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/pci.h>
+#include <asm/mach/time.h>
+#include <asm/mach-types.h>
+#include <asm/page.h>
+
+/*
+ * GLAN Tank timer tick configuration.
+ */
+static void __init glantank_timer_init(void)
+{
+        /* 33.333 MHz crystal.  */
+        iop3xx_init_time(200000000);
+}
+
+static struct sys_timer glantank_timer = {
+        .init           = glantank_timer_init,
+        .offset         = iop3xx_gettimeoffset,
+};
+
+
+/*
+ * GLAN Tank I/O.
+ */
+static struct map_desc glantank_io_desc[] __initdata = {
+        {       /* on-board devices */
+                .virtual        = GLANTANK_UART,
+                .pfn            = __phys_to_pfn(GLANTANK_UART),
+                .length         = 0x00100000,
+                .type           = MT_DEVICE
+        },
+};
+
+void __init glantank_map_io(void)
+{
+        iop3xx_map_io();
+        iotable_init(glantank_io_desc, ARRAY_SIZE(glantank_io_desc));
+}
+
+
+/*
+ * GLAN Tank PCI.
+ */
+#define INTA    IRQ_IOP32X_XINT0
+#define INTB    IRQ_IOP32X_XINT1
+#define INTC    IRQ_IOP32X_XINT2
+#define INTD    IRQ_IOP32X_XINT3
+
+static inline int __init
+glantank_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+        static int pci_irq_table[][4] = {
+                /*
+                 * PCI IDSEL/INTPIN->INTLINE
+                 * A       B       C       D
+                 */
+                {INTD, INTD, INTD, INTD}, /* UART (8250) */
+                {INTA, INTA, INTA, INTA}, /* Ethernet (E1000) */
+                {INTB, INTB, INTB, INTB}, /* IDE (AEC6280R) */
+                {INTC, INTC, INTC, INTC}, /* USB (NEC) */
+        };
+
+        BUG_ON(pin < 1 || pin > 4);
+
+        return pci_irq_table[slot % 4][pin - 1];
+}
+
+static struct hw_pci glantank_pci __initdata = {
+        .swizzle        = pci_std_swizzle,
+        .nr_controllers = 1,
+        .setup          = iop3xx_pci_setup,
+        .preinit        = iop3xx_pci_preinit,
+        .scan           = iop3xx_pci_scan_bus,
+        .map_irq        = glantank_pci_map_irq,
+};
+
+static int __init glantank_pci_init(void)
+{
+        if (machine_is_glantank())
+                pci_common_init(&glantank_pci);
+
+        return 0;
+}
+
+subsys_initcall(glantank_pci_init);
+
+
+/*
+ * GLAN Tank machine initialization.
+ */
+static struct physmap_flash_data glantank_flash_data = {
+        .width          = 1,
+};
+
+static struct resource glantank_flash_resource = {
+        .start          = 0xf0000000,
+        .end            = 0xf007ffff,
+        .flags          = IORESOURCE_MEM,
+};
+
+static struct platform_device glantank_flash_device = {
+        .name           = "physmap-flash",
+        .id             = 0,
+        .dev            = {
+                .platform_data  = &glantank_flash_data,
+        },
+        .num_resources  = 1,
+        .resource       = &glantank_flash_resource,
+};
+
+static struct plat_serial8250_port glantank_serial_port[] = {
+        {
+                .mapbase        = GLANTANK_UART,
+                .membase        = (char *)GLANTANK_UART,
+                .irq            = IRQ_IOP32X_XINT3,
+                .flags          = UPF_SKIP_TEST,
+                .iotype         = UPIO_MEM,
+                .regshift       = 0,
+                .uartclk        = 1843200,
+        },
+        { },
+};
+
+static struct resource glantank_uart_resource = {
+        .start          = GLANTANK_UART,
+        .end            = GLANTANK_UART + 7,
+        .flags          = IORESOURCE_MEM,
+};
+
+static struct platform_device glantank_serial_device = {
+        .name           = "serial8250",
+        .id             = PLAT8250_DEV_PLATFORM,
+        .dev            = {
+                .platform_data          = glantank_serial_port,
+        },
+        .num_resources  = 1,
+        .resource       = &glantank_uart_resource,
+};
+
+static void glantank_power_off(void)
+{
+        __raw_writeb(0x01, 0xfe8d0004);
+
+        while (1)
+                ;
+}
+
+static void __init glantank_init_machine(void)
+{
+        platform_device_register(&iop3xx_i2c0_device);
+        platform_device_register(&iop3xx_i2c1_device);
+        platform_device_register(&glantank_flash_device);
+        platform_device_register(&glantank_serial_device);
+
+        pm_power_off = glantank_power_off;
+}
+
+MACHINE_START(GLANTANK, "GLAN Tank")
+        /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
+        .phys_io        = GLANTANK_UART,
+        .io_pg_offst    = ((GLANTANK_UART) >> 18) & 0xfffc,
+        .boot_params    = 0xa0000100,
+        .map_io         = glantank_map_io,
+        .init_irq       = iop32x_init_irq,
+        .timer          = &glantank_timer,
+        .init_machine   = glantank_init_machine,
+MACHINE_END
diff --git a/arch/arm/mach-iop32x/irq.c b/arch/arm/mach-iop32x/irq.c
index 17fb94e6e29f..69d6302f40cf 100644
--- a/arch/arm/mach-iop32x/irq.c
+++ b/arch/arm/mach-iop32x/irq.c
@@ -62,7 +62,8 @@ void __init iop32x_init_irq(void)
 
         intctl_write(0);
         intstr_write(0);
-        if (machine_is_iq80321() ||
+        if (machine_is_glantank() ||
+            machine_is_iq80321() ||
             machine_is_iq31244() ||
             machine_is_n2100())
                 *IOP3XX_PCIIRSR = 0x0f;