[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>

4 files changed, 205 insertions, 1 deletions

diff --git a/arch/arm/mach-iop32x/Kconfig b/arch/arm/mach-iop32x/Kconfig
index 0a397a4..c072d94 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 9c62470..7b05b37 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 0000000..b9b7650
--- /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 17fb94e..69d6302 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;