[linux-block.git] / arch / powerpc / platforms / embedded6xx / storcenter.c

/*
 * Board setup routines for the storcenter
 *
 * Copyright 2007 (C) Oyvind Repvik (nail@nslu2-linux.org)
 * Copyright 2007 Andy Wilcox, Jon Loeliger
 *
 * Based on linkstation.c by G. Liakhovetski
 *
 * This file is licensed under the terms of the GNU General Public License
 * version 2.  This program is licensed "as is" without any warranty of
 * any kind, whether express or implied.
 */

#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/initrd.h>
#include <linux/of_platform.h>

#include <asm/system.h>
#include <asm/time.h>
#include <asm/prom.h>
#include <asm/mpic.h>
#include <asm/pci-bridge.h>

#include "mpc10x.h"


static __initdata struct of_device_id storcenter_of_bus[] = {
	{ .name = "soc", },
	{},
};

static int __init storcenter_device_probe(void)
{
	of_platform_bus_probe(NULL, storcenter_of_bus, NULL);
	return 0;
}
machine_device_initcall(storcenter, storcenter_device_probe);


static int __init storcenter_add_bridge(struct device_node *dev)
{
#ifdef CONFIG_PCI
	int len;
	struct pci_controller *hose;
	const int *bus_range;

	printk("Adding PCI host bridge %s\n", dev->full_name);

	hose = pcibios_alloc_controller(dev);
	if (hose == NULL)
		return -ENOMEM;

	bus_range = of_get_property(dev, "bus-range", &len);
	hose->first_busno = bus_range ? bus_range[0] : 0;
	hose->last_busno = bus_range ? bus_range[1] : 0xff;

	setup_indirect_pci(hose, MPC10X_MAPB_CNFG_ADDR, MPC10X_MAPB_CNFG_DATA, 0);

	/* Interpret the "ranges" property */
	/* This also maps the I/O region and sets isa_io/mem_base */
	pci_process_bridge_OF_ranges(hose, dev, 1);
#endif

	return 0;
}

static void __init storcenter_setup_arch(void)
{
	struct device_node *np;

	/* Lookup PCI host bridges */
	for_each_compatible_node(np, "pci", "mpc10x-pci")
		storcenter_add_bridge(np);

	printk(KERN_INFO "IOMEGA StorCenter\n");
}

/*
 * Interrupt setup and service.  Interrrupts on the turbostation come
 * from the four PCI slots plus onboard 8241 devices: I2C, DUART.
 */
static void __init storcenter_init_IRQ(void)
{
	struct mpic *mpic;
	struct device_node *dnp;
	const void *prop;
	int size;
	phys_addr_t paddr;

	dnp = of_find_node_by_type(NULL, "open-pic");
	if (dnp == NULL)
		return;

	prop = of_get_property(dnp, "reg", &size);
	if (prop == NULL) {
		of_node_put(dnp);
		return;
	}

	paddr = (phys_addr_t)of_translate_address(dnp, prop);
	mpic = mpic_alloc(dnp, paddr, MPIC_PRIMARY | MPIC_WANTS_RESET,
			16, 32, " OpenPIC  ");

	of_node_put(dnp);

	BUG_ON(mpic == NULL);

	/*
	 * 16 Serial Interrupts followed by 16 Internal Interrupts.
	 * I2C is the second internal, so it is at 17, 0x11020.
	 */
	mpic_assign_isu(mpic, 0, paddr + 0x10200);
	mpic_assign_isu(mpic, 1, paddr + 0x11000);

	mpic_init(mpic);
}

static void storcenter_restart(char *cmd)
{
	local_irq_disable();

	/* Set exception prefix high - to the firmware */
	_nmask_and_or_msr(0, MSR_IP);

	/* Wait for reset to happen */
	for (;;) ;
}

static int __init storcenter_probe(void)
{
	unsigned long root = of_get_flat_dt_root();

	return of_flat_dt_is_compatible(root, "iomega,storcenter");
}

define_machine(storcenter){
	.name 			= "IOMEGA StorCenter",
	.probe 			= storcenter_probe,
	.setup_arch 		= storcenter_setup_arch,
	.init_IRQ 		= storcenter_init_IRQ,
	.get_irq 		= mpic_get_irq,
	.restart 		= storcenter_restart,
	.calibrate_decr 	= generic_calibrate_decr,
};
Commit	Line	Data
3490cba5 JL	1	/*
	2	* Board setup routines for the storcenter
	3	*
	4	* Copyright 2007 (C) Oyvind Repvik (nail@nslu2-linux.org)
	5	* Copyright 2007 Andy Wilcox, Jon Loeliger
	6	*
	7	* Based on linkstation.c by G. Liakhovetski
	8	*
	9	* This file is licensed under the terms of the GNU General Public License
	10	* version 2. This program is licensed "as is" without any warranty of
	11	* any kind, whether express or implied.
	12	*/
	13
	14	#include <linux/kernel.h>
	15	#include <linux/pci.h>
	16	#include <linux/initrd.h>
3490cba5 JL	17	#include <linux/of_platform.h>
	18
	19	#include <asm/system.h>
	20	#include <asm/time.h>
	21	#include <asm/prom.h>
	22	#include <asm/mpic.h>
	23	#include <asm/pci-bridge.h>
	24
	25	#include "mpc10x.h"
	26
	27
3490cba5 JL	28	static __initdata struct of_device_id storcenter_of_bus[] = {
	29	{ .name = "soc", },
	30	{},
	31	};
	32
	33	static int __init storcenter_device_probe(void)
	34	{
	35	of_platform_bus_probe(NULL, storcenter_of_bus, NULL);
	36	return 0;
	37	}
	38	machine_device_initcall(storcenter, storcenter_device_probe);
	39
	40
	41	static int __init storcenter_add_bridge(struct device_node *dev)
	42	{
	43	#ifdef CONFIG_PCI
	44	int len;
	45	struct pci_controller *hose;
	46	const int *bus_range;
	47
	48	printk("Adding PCI host bridge %s\n", dev->full_name);
	49
	50	hose = pcibios_alloc_controller(dev);
	51	if (hose == NULL)
	52	return -ENOMEM;
	53
	54	bus_range = of_get_property(dev, "bus-range", &len);
	55	hose->first_busno = bus_range ? bus_range[0] : 0;
	56	hose->last_busno = bus_range ? bus_range[1] : 0xff;
	57
	58	setup_indirect_pci(hose, MPC10X_MAPB_CNFG_ADDR, MPC10X_MAPB_CNFG_DATA, 0);
	59
	60	/* Interpret the "ranges" property */
	61	/* This also maps the I/O region and sets isa_io/mem_base */
	62	pci_process_bridge_OF_ranges(hose, dev, 1);
	63	#endif
	64
	65	return 0;
	66	}
	67
	68	static void __init storcenter_setup_arch(void)
	69	{
	70	struct device_node *np;
	71
3490cba5 JL	72	/* Lookup PCI host bridges */
	73	for_each_compatible_node(np, "pci", "mpc10x-pci")
	74	storcenter_add_bridge(np);
	75
	76	printk(KERN_INFO "IOMEGA StorCenter\n");
	77	}
	78
	79	/*
	80	* Interrupt setup and service. Interrrupts on the turbostation come
	81	* from the four PCI slots plus onboard 8241 devices: I2C, DUART.
	82	*/
	83	static void __init storcenter_init_IRQ(void)
	84	{
	85	struct mpic *mpic;
	86	struct device_node *dnp;
	87	const void *prop;
	88	int size;
	89	phys_addr_t paddr;
	90
	91	dnp = of_find_node_by_type(NULL, "open-pic");
	92	if (dnp == NULL)
	93	return;
	94
	95	prop = of_get_property(dnp, "reg", &size);
	96	if (prop == NULL) {
	97	of_node_put(dnp);
	98	return;
	99	}
	100
	101	paddr = (phys_addr_t)of_translate_address(dnp, prop);
	102	mpic = mpic_alloc(dnp, paddr, MPIC_PRIMARY \| MPIC_WANTS_RESET,
0367aad1	103	16, 32, " OpenPIC ");
3490cba5 JL	104
	105	of_node_put(dnp);
	106
	107	BUG_ON(mpic == NULL);
	108
3490cba5	109	/*
0367aad1 JL	110	* 16 Serial Interrupts followed by 16 Internal Interrupts.
0367aad1 JL	111	* I2C is the second internal, so it is at 17, 0x11020.
3490cba5 JL	112	*/
3490cba5 JL	113	mpic_assign_isu(mpic, 0, paddr + 0x10200);
0367aad1	114	mpic_assign_isu(mpic, 1, paddr + 0x11000);
3490cba5 JL	115
	116	mpic_init(mpic);
	117	}
	118
	119	static void storcenter_restart(char *cmd)
	120	{
	121	local_irq_disable();
	122
	123	/* Set exception prefix high - to the firmware */
	124	_nmask_and_or_msr(0, MSR_IP);
	125
	126	/* Wait for reset to happen */
	127	for (;;) ;
	128	}
	129
	130	static int __init storcenter_probe(void)
	131	{
	132	unsigned long root = of_get_flat_dt_root();
	133
0367aad1	134	return of_flat_dt_is_compatible(root, "iomega,storcenter");
3490cba5 JL	135	}
	136
	137	define_machine(storcenter){
	138	.name = "IOMEGA StorCenter",
	139	.probe = storcenter_probe,
	140	.setup_arch = storcenter_setup_arch,
	141	.init_IRQ = storcenter_init_IRQ,
	142	.get_irq = mpic_get_irq,
	143	.restart = storcenter_restart,
	144	.calibrate_decr = generic_calibrate_decr,
	145	};