[deliverable/linux.git] / arch / arm / common / via82c505.c

#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/io.h>


#include <asm/mach/pci.h>

#define MAX_SLOTS		7

#define CONFIG_CMD(bus, devfn, where)   (0x80000000 | (bus->number << 16) | (devfn << 8) | (where & ~3))

static int
via82c505_read_config(struct pci_bus *bus, unsigned int devfn, int where,
		      int size, u32 *value)
{
	outl(CONFIG_CMD(bus,devfn,where),0xCF8);
	switch (size) {
	case 1:
		*value=inb(0xCFC + (where&3));
		break;
	case 2:
		*value=inw(0xCFC + (where&2));
		break;
	case 4:
		*value=inl(0xCFC);
		break;
	}
	return PCIBIOS_SUCCESSFUL;
}

static int
via82c505_write_config(struct pci_bus *bus, unsigned int devfn, int where,
		       int size, u32 value)
{
	outl(CONFIG_CMD(bus,devfn,where),0xCF8);
	switch (size) {
	case 1:
		outb(value, 0xCFC + (where&3));
		break;
	case 2:
		outw(value, 0xCFC + (where&2));
		break;
	case 4:
		outl(value, 0xCFC);
		break;
	}
	return PCIBIOS_SUCCESSFUL;
}

struct pci_ops via82c505_ops = {
	.read	= via82c505_read_config,
	.write	= via82c505_write_config,
};

void __init via82c505_preinit(void)
{
	printk(KERN_DEBUG "PCI: VIA 82c505\n");
	if (!request_region(0xA8,2,"via config")) {
		printk(KERN_WARNING"VIA 82c505: Unable to request region 0xA8\n");
		return;
	}
	if (!request_region(0xCF8,8,"pci config")) {
		printk(KERN_WARNING"VIA 82c505: Unable to request region 0xCF8\n");
		release_region(0xA8, 2);
		return;
	}

	/* Enable compatible Mode */
	outb(0x96,0xA8);
	outb(0x18,0xA9);
	outb(0x93,0xA8);
	outb(0xd0,0xA9);

}

int __init via82c505_setup(int nr, struct pci_sys_data *sys)
{
	return (nr == 0);
}
Commit	Line	Data
1da177e4 LT	1	#include <linux/kernel.h>
1da177e4 LT	2	#include <linux/pci.h>
1da177e4 LT	3	#include <linux/interrupt.h>
	4	#include <linux/mm.h>
	5	#include <linux/init.h>
	6	#include <linux/ioport.h>
fced80c7	7	#include <linux/io.h>
1da177e4	8
1da177e4 LT	9
	10	#include <asm/mach/pci.h>
	11
	12	#define MAX_SLOTS 7
	13
	14	#define CONFIG_CMD(bus, devfn, where) (0x80000000 \| (bus->number << 16) \| (devfn << 8) \| (where & ~3))
	15
	16	static int
	17	via82c505_read_config(struct pci_bus *bus, unsigned int devfn, int where,
	18	int size, u32 *value)
	19	{
	20	outl(CONFIG_CMD(bus,devfn,where),0xCF8);
	21	switch (size) {
	22	case 1:
	23	*value=inb(0xCFC + (where&3));
	24	break;
	25	case 2:
	26	*value=inw(0xCFC + (where&2));
	27	break;
	28	case 4:
	29	*value=inl(0xCFC);
	30	break;
	31	}
	32	return PCIBIOS_SUCCESSFUL;
	33	}
	34
	35	static int
	36	via82c505_write_config(struct pci_bus *bus, unsigned int devfn, int where,
	37	int size, u32 value)
	38	{
	39	outl(CONFIG_CMD(bus,devfn,where),0xCF8);
	40	switch (size) {
	41	case 1:
	42	outb(value, 0xCFC + (where&3));
	43	break;
	44	case 2:
	45	outw(value, 0xCFC + (where&2));
	46	break;
	47	case 4:
	48	outl(value, 0xCFC);
	49	break;
	50	}
	51	return PCIBIOS_SUCCESSFUL;
	52	}
	53
c23bfc38	54	struct pci_ops via82c505_ops = {
1da177e4 LT	55	.read = via82c505_read_config,
	56	.write = via82c505_write_config,
	57	};
	58
	59	void __init via82c505_preinit(void)
	60	{
	61	printk(KERN_DEBUG "PCI: VIA 82c505\n");
	62	if (!request_region(0xA8,2,"via config")) {
	63	printk(KERN_WARNING"VIA 82c505: Unable to request region 0xA8\n");
	64	return;
	65	}
	66	if (!request_region(0xCF8,8,"pci config")) {
	67	printk(KERN_WARNING"VIA 82c505: Unable to request region 0xCF8\n");
	68	release_region(0xA8, 2);
	69	return;
	70	}
	71
	72	/* Enable compatible Mode */
	73	outb(0x96,0xA8);
	74	outb(0x18,0xA9);
	75	outb(0x93,0xA8);
	76	outb(0xd0,0xA9);
	77
	78	}
	79
	80	int __init via82c505_setup(int nr, struct pci_sys_data *sys)
	81	{
	82	return (nr == 0);
	83	}