[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / char / agp / ati-agp.c

/*
 * ATi AGPGART routines.
 */

#include <linux/types.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/agp_backend.h>
#include <asm/agp.h>
#include "agp.h"

#define ATI_GART_MMBASE_ADDR	0x14
#define ATI_RS100_APSIZE	0xac
#define ATI_RS100_IG_AGPMODE	0xb0
#define ATI_RS300_APSIZE	0xf8
#define ATI_RS300_IG_AGPMODE	0xfc
#define ATI_GART_FEATURE_ID		0x00
#define ATI_GART_BASE			0x04
#define ATI_GART_CACHE_SZBASE		0x08
#define ATI_GART_CACHE_CNTRL		0x0c
#define ATI_GART_CACHE_ENTRY_CNTRL	0x10


static const struct aper_size_info_lvl2 ati_generic_sizes[7] =
{
	{2048, 524288, 0x0000000c},
	{1024, 262144, 0x0000000a},
	{512, 131072, 0x00000008},
	{256, 65536, 0x00000006},
	{128, 32768, 0x00000004},
	{64, 16384, 0x00000002},
	{32, 8192, 0x00000000}
};

static struct gatt_mask ati_generic_masks[] =
{
	{ .mask = 1, .type = 0}
};


struct ati_page_map {
	unsigned long *real;
	unsigned long __iomem *remapped;
};

static struct _ati_generic_private {
	volatile u8 __iomem *registers;
	struct ati_page_map **gatt_pages;
	int num_tables;
} ati_generic_private;

static int ati_create_page_map(struct ati_page_map *page_map)
{
	int i, err = 0;

	page_map->real = (unsigned long *) __get_free_page(GFP_KERNEL);
	if (page_map->real == NULL)
		return -ENOMEM;

	set_memory_uc((unsigned long)page_map->real, 1);
	err = map_page_into_agp(virt_to_page(page_map->real));
	page_map->remapped = page_map->real;

	for (i = 0; i < PAGE_SIZE / sizeof(unsigned long); i++) {
		writel(agp_bridge->scratch_page, page_map->remapped+i);
		readl(page_map->remapped+i);	/* PCI Posting. */
	}

	return 0;
}


static void ati_free_page_map(struct ati_page_map *page_map)
{
	unmap_page_from_agp(virt_to_page(page_map->real));
	set_memory_wb((unsigned long)page_map->real, 1);
	free_page((unsigned long) page_map->real);
}


static void ati_free_gatt_pages(void)
{
	int i;
	struct ati_page_map **tables;
	struct ati_page_map *entry;

	tables = ati_generic_private.gatt_pages;
	for (i = 0; i < ati_generic_private.num_tables; i++) {
		entry = tables[i];
		if (entry != NULL) {
			if (entry->real != NULL)
				ati_free_page_map(entry);
			kfree(entry);
		}
	}
	kfree(tables);
}


static int ati_create_gatt_pages(int nr_tables)
{
	struct ati_page_map **tables;
	struct ati_page_map *entry;
	int retval = 0;
	int i;

	tables = kzalloc((nr_tables + 1) * sizeof(struct ati_page_map *),GFP_KERNEL);
	if (tables == NULL)
		return -ENOMEM;

	for (i = 0; i < nr_tables; i++) {
		entry = kzalloc(sizeof(struct ati_page_map), GFP_KERNEL);
		tables[i] = entry;
		if (entry == NULL) {
			retval = -ENOMEM;
			break;
		}
		retval = ati_create_page_map(entry);
		if (retval != 0)
			break;
	}
	ati_generic_private.num_tables = i;
	ati_generic_private.gatt_pages = tables;

	if (retval != 0)
		ati_free_gatt_pages();

	return retval;
}

static int is_r200(void)
{
	if ((agp_bridge->dev->device == PCI_DEVICE_ID_ATI_RS100) ||
	    (agp_bridge->dev->device == PCI_DEVICE_ID_ATI_RS200) ||
	    (agp_bridge->dev->device == PCI_DEVICE_ID_ATI_RS200_B) ||
	    (agp_bridge->dev->device == PCI_DEVICE_ID_ATI_RS250))
		return 1;
	return 0;
}

static int ati_fetch_size(void)
{
	int i;
	u32 temp;
	struct aper_size_info_lvl2 *values;

	if (is_r200())
		pci_read_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, &temp);
	else
		pci_read_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, &temp);

	temp = (temp & 0x0000000e);
	values = A_SIZE_LVL2(agp_bridge->driver->aperture_sizes);
	for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
		if (temp == values[i].size_value) {
			agp_bridge->previous_size =
			    agp_bridge->current_size = (void *) (values + i);

			agp_bridge->aperture_size_idx = i;
			return values[i].size;
		}
	}

	return 0;
}

static void ati_tlbflush(struct agp_memory * mem)
{
	writel(1, ati_generic_private.registers+ATI_GART_CACHE_CNTRL);
	readl(ati_generic_private.registers+ATI_GART_CACHE_CNTRL);	/* PCI Posting. */
}

static void ati_cleanup(void)
{
	struct aper_size_info_lvl2 *previous_size;
	u32 temp;

	previous_size = A_SIZE_LVL2(agp_bridge->previous_size);

	/* Write back the previous size and disable gart translation */
	if (is_r200()) {
		pci_read_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, &temp);
		temp = ((temp & ~(0x0000000f)) | previous_size->size_value);
		pci_write_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, temp);
	} else {
		pci_read_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, &temp);
		temp = ((temp & ~(0x0000000f)) | previous_size->size_value);
		pci_write_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, temp);
	}
	iounmap((volatile u8 __iomem *)ati_generic_private.registers);
}


static int ati_configure(void)
{
	u32 temp;

	/* Get the memory mapped registers */
	pci_read_config_dword(agp_bridge->dev, ATI_GART_MMBASE_ADDR, &temp);
	temp = (temp & 0xfffff000);
	ati_generic_private.registers = (volatile u8 __iomem *) ioremap(temp, 4096);

	if (!ati_generic_private.registers)
		return -ENOMEM;

	if (is_r200())
		pci_write_config_dword(agp_bridge->dev, ATI_RS100_IG_AGPMODE, 0x20000);
	else
		pci_write_config_dword(agp_bridge->dev, ATI_RS300_IG_AGPMODE, 0x20000);

	/* address to map too */
	/*
	pci_read_config_dword(agp_bridge.dev, AGP_APBASE, &temp);
	agp_bridge.gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
	printk(KERN_INFO PFX "IGP320 gart_bus_addr: %x\n", agp_bridge.gart_bus_addr);
	*/
	writel(0x60000, ati_generic_private.registers+ATI_GART_FEATURE_ID);
	readl(ati_generic_private.registers+ATI_GART_FEATURE_ID);	/* PCI Posting.*/

	/* SIGNALED_SYSTEM_ERROR @ NB_STATUS */
	pci_read_config_dword(agp_bridge->dev, 4, &temp);
	pci_write_config_dword(agp_bridge->dev, 4, temp | (1<<14));

	/* Write out the address of the gatt table */
	writel(agp_bridge->gatt_bus_addr, ati_generic_private.registers+ATI_GART_BASE);
	readl(ati_generic_private.registers+ATI_GART_BASE);	/* PCI Posting. */

	return 0;
}


#ifdef CONFIG_PM
static int agp_ati_suspend(struct pci_dev *dev, pm_message_t state)
{
	pci_save_state(dev);
	pci_set_power_state(dev, 3);

	return 0;
}

static int agp_ati_resume(struct pci_dev *dev)
{
	pci_set_power_state(dev, 0);
	pci_restore_state(dev);

	return ati_configure();
}
#endif

/*
 *Since we don't need contiguous memory we just try
 * to get the gatt table once
 */

#define GET_PAGE_DIR_OFF(addr) (addr >> 22)
#define GET_PAGE_DIR_IDX(addr) (GET_PAGE_DIR_OFF(addr) - \
	GET_PAGE_DIR_OFF(agp_bridge->gart_bus_addr))
#define GET_GATT_OFF(addr) ((addr & 0x003ff000) >> 12)
#undef  GET_GATT
#define GET_GATT(addr) (ati_generic_private.gatt_pages[\
	GET_PAGE_DIR_IDX(addr)]->remapped)

static int ati_insert_memory(struct agp_memory * mem,
			     off_t pg_start, int type)
{
	int i, j, num_entries;
	unsigned long __iomem *cur_gatt;
	unsigned long addr;
	int mask_type;

	num_entries = A_SIZE_LVL2(agp_bridge->current_size)->num_entries;

	mask_type = agp_generic_type_to_mask_type(mem->bridge, type);
	if (mask_type != 0 || type != mem->type)
		return -EINVAL;

	if (mem->page_count == 0)
		return 0;

	if ((pg_start + mem->page_count) > num_entries)
		return -EINVAL;

	j = pg_start;
	while (j < (pg_start + mem->page_count)) {
		addr = (j * PAGE_SIZE) + agp_bridge->gart_bus_addr;
		cur_gatt = GET_GATT(addr);
		if (!PGE_EMPTY(agp_bridge,readl(cur_gatt+GET_GATT_OFF(addr))))
			return -EBUSY;
		j++;
	}

	if (!mem->is_flushed) {
		/*CACHE_FLUSH(); */
		global_cache_flush();
		mem->is_flushed = true;
	}

	for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
		addr = (j * PAGE_SIZE) + agp_bridge->gart_bus_addr;
		cur_gatt = GET_GATT(addr);
		writel(agp_bridge->driver->mask_memory(agp_bridge,	
						       mem->pages[i], mem->type),
		       cur_gatt+GET_GATT_OFF(addr));
	}
	readl(GET_GATT(agp_bridge->gart_bus_addr)); /* PCI posting */
	agp_bridge->driver->tlb_flush(mem);
	return 0;
}

static int ati_remove_memory(struct agp_memory * mem, off_t pg_start,
			     int type)
{
	int i;
	unsigned long __iomem *cur_gatt;
	unsigned long addr;
	int mask_type;

	mask_type = agp_generic_type_to_mask_type(mem->bridge, type);
	if (mask_type != 0 || type != mem->type)
		return -EINVAL;

	if (mem->page_count == 0)
		return 0;

	for (i = pg_start; i < (mem->page_count + pg_start); i++) {
		addr = (i * PAGE_SIZE) + agp_bridge->gart_bus_addr;
		cur_gatt = GET_GATT(addr);
		writel(agp_bridge->scratch_page, cur_gatt+GET_GATT_OFF(addr));
	}

	readl(GET_GATT(agp_bridge->gart_bus_addr)); /* PCI posting */
	agp_bridge->driver->tlb_flush(mem);
	return 0;
}

static int ati_create_gatt_table(struct agp_bridge_data *bridge)
{
	struct aper_size_info_lvl2 *value;
	struct ati_page_map page_dir;
	unsigned long addr;
	int retval;
	u32 temp;
	int i;
	struct aper_size_info_lvl2 *current_size;

	value = A_SIZE_LVL2(agp_bridge->current_size);
	retval = ati_create_page_map(&page_dir);
	if (retval != 0)
		return retval;

	retval = ati_create_gatt_pages(value->num_entries / 1024);
	if (retval != 0) {
		ati_free_page_map(&page_dir);
		return retval;
	}

	agp_bridge->gatt_table_real = (u32 *)page_dir.real;
	agp_bridge->gatt_table = (u32 __iomem *) page_dir.remapped;
	agp_bridge->gatt_bus_addr = virt_to_gart(page_dir.real);

	/* Write out the size register */
	current_size = A_SIZE_LVL2(agp_bridge->current_size);

	if (is_r200()) {
		pci_read_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, &temp);
		temp = (((temp & ~(0x0000000e)) | current_size->size_value)
			| 0x00000001);
		pci_write_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, temp);
		pci_read_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, &temp);
	} else {
		pci_read_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, &temp);
		temp = (((temp & ~(0x0000000e)) | current_size->size_value)
			| 0x00000001);
		pci_write_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, temp);
		pci_read_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, &temp);
	}

	/*
	 * Get the address for the gart region.
	 * This is a bus address even on the alpha, b/c its
	 * used to program the agp master not the cpu
	 */
	pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
	addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
	agp_bridge->gart_bus_addr = addr;

	/* Calculate the agp offset */
	for (i = 0; i < value->num_entries / 1024; i++, addr += 0x00400000) {
		writel(virt_to_gart(ati_generic_private.gatt_pages[i]->real) | 1,
			page_dir.remapped+GET_PAGE_DIR_OFF(addr));
		readl(page_dir.remapped+GET_PAGE_DIR_OFF(addr));	/* PCI Posting. */
	}

	return 0;
}

static int ati_free_gatt_table(struct agp_bridge_data *bridge)
{
	struct ati_page_map page_dir;

	page_dir.real = (unsigned long *)agp_bridge->gatt_table_real;
	page_dir.remapped = (unsigned long __iomem *)agp_bridge->gatt_table;

	ati_free_gatt_pages();
	ati_free_page_map(&page_dir);
	return 0;
}

static const struct agp_bridge_driver ati_generic_bridge = {
	.owner			= THIS_MODULE,
	.aperture_sizes		= ati_generic_sizes,
	.size_type		= LVL2_APER_SIZE,
	.num_aperture_sizes	= 7,
	.configure		= ati_configure,
	.fetch_size		= ati_fetch_size,
	.cleanup		= ati_cleanup,
	.tlb_flush		= ati_tlbflush,
	.mask_memory		= agp_generic_mask_memory,
	.masks			= ati_generic_masks,
	.agp_enable		= agp_generic_enable,
	.cache_flush		= global_cache_flush,
	.create_gatt_table	= ati_create_gatt_table,
	.free_gatt_table	= ati_free_gatt_table,
	.insert_memory		= ati_insert_memory,
	.remove_memory		= ati_remove_memory,
	.alloc_by_type		= agp_generic_alloc_by_type,
	.free_by_type		= agp_generic_free_by_type,
	.agp_alloc_page		= agp_generic_alloc_page,
	.agp_alloc_pages	= agp_generic_alloc_pages,
	.agp_destroy_page	= agp_generic_destroy_page,
	.agp_destroy_pages	= agp_generic_destroy_pages,
	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
};


static struct agp_device_ids ati_agp_device_ids[] __devinitdata =
{
	{
		.device_id	= PCI_DEVICE_ID_ATI_RS100,
		.chipset_name	= "IGP320/M",
	},
	{
		.device_id	= PCI_DEVICE_ID_ATI_RS200,
		.chipset_name	= "IGP330/340/345/350/M",
	},
	{
		.device_id	= PCI_DEVICE_ID_ATI_RS200_B,
		.chipset_name	= "IGP345M",
	},
	{
		.device_id	= PCI_DEVICE_ID_ATI_RS250,
		.chipset_name	= "IGP7000/M",
	},
	{
		.device_id	= PCI_DEVICE_ID_ATI_RS300_100,
		.chipset_name	= "IGP9100/M",
	},
	{
		.device_id	= PCI_DEVICE_ID_ATI_RS300_133,
		.chipset_name	= "IGP9100/M",
	},
	{
		.device_id	= PCI_DEVICE_ID_ATI_RS300_166,
		.chipset_name	= "IGP9100/M",
	},
	{
		.device_id	= PCI_DEVICE_ID_ATI_RS300_200,
		.chipset_name	= "IGP9100/M",
	},
	{
		.device_id	= PCI_DEVICE_ID_ATI_RS350_133,
		.chipset_name	= "IGP9000/M",
	},
	{
		.device_id	= PCI_DEVICE_ID_ATI_RS350_200,
		.chipset_name	= "IGP9100/M",
	},
	{ }, /* dummy final entry, always present */
};

static int __devinit agp_ati_probe(struct pci_dev *pdev,
				   const struct pci_device_id *ent)
{
	struct agp_device_ids *devs = ati_agp_device_ids;
	struct agp_bridge_data *bridge;
	u8 cap_ptr;
	int j;

	cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
	if (!cap_ptr)
		return -ENODEV;

	/* probe for known chipsets */
	for (j = 0; devs[j].chipset_name; j++) {
		if (pdev->device == devs[j].device_id)
			goto found;
	}

	dev_err(&pdev->dev, "unsupported Ati chipset [%04x/%04x])\n",
		pdev->vendor, pdev->device);
	return -ENODEV;

found:
	bridge = agp_alloc_bridge();
	if (!bridge)
		return -ENOMEM;

	bridge->dev = pdev;
	bridge->capndx = cap_ptr;

	bridge->driver = &ati_generic_bridge;

	dev_info(&pdev->dev, "Ati %s chipset\n", devs[j].chipset_name);

	/* Fill in the mode register */
	pci_read_config_dword(pdev,
			bridge->capndx+PCI_AGP_STATUS,
			&bridge->mode);

	pci_set_drvdata(pdev, bridge);
	return agp_add_bridge(bridge);
}

static void __devexit agp_ati_remove(struct pci_dev *pdev)
{
	struct agp_bridge_data *bridge = pci_get_drvdata(pdev);

	agp_remove_bridge(bridge);
	agp_put_bridge(bridge);
}

static struct pci_device_id agp_ati_pci_table[] = {
	{
	.class		= (PCI_CLASS_BRIDGE_HOST << 8),
	.class_mask	= ~0,
	.vendor		= PCI_VENDOR_ID_ATI,
	.device		= PCI_ANY_ID,
	.subvendor	= PCI_ANY_ID,
	.subdevice	= PCI_ANY_ID,
	},
	{ }
};

MODULE_DEVICE_TABLE(pci, agp_ati_pci_table);

static struct pci_driver agp_ati_pci_driver = {
	.name		= "agpgart-ati",
	.id_table	= agp_ati_pci_table,
	.probe		= agp_ati_probe,
	.remove		= agp_ati_remove,
#ifdef CONFIG_PM
	.suspend	= agp_ati_suspend,
	.resume		= agp_ati_resume,
#endif
};

static int __init agp_ati_init(void)
{
	if (agp_off)
		return -EINVAL;
	return pci_register_driver(&agp_ati_pci_driver);
}

static void __exit agp_ati_cleanup(void)
{
	pci_unregister_driver(&agp_ati_pci_driver);
}

module_init(agp_ati_init);
module_exit(agp_ati_cleanup);

MODULE_AUTHOR("Dave Jones <davej@redhat.com>");
MODULE_LICENSE("GPL and additional rights");
Commit	Line	Data
1da177e4 LT	1	/*
	2	* ATi AGPGART routines.
	3	*/
	4
	5	#include <linux/types.h>
	6	#include <linux/module.h>
	7	#include <linux/pci.h>
	8	#include <linux/init.h>
4e57b681 TS	9	#include <linux/string.h>
4e57b681 TS	10	#include <linux/slab.h>
1da177e4 LT	11	#include <linux/agp_backend.h>
	12	#include <asm/agp.h>
	13	#include "agp.h"
	14
	15	#define ATI_GART_MMBASE_ADDR 0x14
	16	#define ATI_RS100_APSIZE 0xac
	17	#define ATI_RS100_IG_AGPMODE 0xb0
	18	#define ATI_RS300_APSIZE 0xf8
	19	#define ATI_RS300_IG_AGPMODE 0xfc
	20	#define ATI_GART_FEATURE_ID 0x00
	21	#define ATI_GART_BASE 0x04
	22	#define ATI_GART_CACHE_SZBASE 0x08
	23	#define ATI_GART_CACHE_CNTRL 0x0c
	24	#define ATI_GART_CACHE_ENTRY_CNTRL 0x10
	25
	26
e5524f35	27	static const struct aper_size_info_lvl2 ati_generic_sizes[7] =
1da177e4 LT	28	{
	29	{2048, 524288, 0x0000000c},
	30	{1024, 262144, 0x0000000a},
	31	{512, 131072, 0x00000008},
	32	{256, 65536, 0x00000006},
	33	{128, 32768, 0x00000004},
	34	{64, 16384, 0x00000002},
	35	{32, 8192, 0x00000000}
	36	};
	37
	38	static struct gatt_mask ati_generic_masks[] =
	39	{
	40	{ .mask = 1, .type = 0}
	41	};
	42
	43
87a17f31	44	struct ati_page_map {
1da177e4 LT	45	unsigned long *real;
1da177e4 LT	46	unsigned long __iomem *remapped;
87a17f31	47	};
1da177e4 LT	48
	49	static struct _ati_generic_private {
	50	volatile u8 __iomem *registers;
87a17f31	51	struct ati_page_map **gatt_pages;
1da177e4 LT	52	int num_tables;
	53	} ati_generic_private;
	54
87a17f31	55	static int ati_create_page_map(struct ati_page_map *page_map)
1da177e4 LT	56	{
	57	int i, err = 0;
	58
	59	page_map->real = (unsigned long *) __get_free_page(GFP_KERNEL);
	60	if (page_map->real == NULL)
	61	return -ENOMEM;
	62
44a207fc	63	set_memory_uc((unsigned long)page_map->real, 1);
1da177e4	64	err = map_page_into_agp(virt_to_page(page_map->real));
fcea424d	65	page_map->remapped = page_map->real;
1da177e4	66
6a92a4e0	67	for (i = 0; i < PAGE_SIZE / sizeof(unsigned long); i++) {
1da177e4 LT	68	writel(agp_bridge->scratch_page, page_map->remapped+i);
	69	readl(page_map->remapped+i); /* PCI Posting. */
	70	}
	71
	72	return 0;
	73	}
	74
	75
87a17f31	76	static void ati_free_page_map(struct ati_page_map *page_map)
1da177e4 LT	77	{
1da177e4 LT	78	unmap_page_from_agp(virt_to_page(page_map->real));
44a207fc	79	set_memory_wb((unsigned long)page_map->real, 1);
1da177e4 LT	80	free_page((unsigned long) page_map->real);
	81	}
	82
	83
	84	static void ati_free_gatt_pages(void)
	85	{
	86	int i;
87a17f31 DJ	87	struct ati_page_map **tables;
87a17f31 DJ	88	struct ati_page_map *entry;
1da177e4 LT	89
1da177e4 LT	90	tables = ati_generic_private.gatt_pages;
6a92a4e0	91	for (i = 0; i < ati_generic_private.num_tables; i++) {
1da177e4 LT	92	entry = tables[i];
	93	if (entry != NULL) {
	94	if (entry->real != NULL)
	95	ati_free_page_map(entry);
	96	kfree(entry);
	97	}
	98	}
	99	kfree(tables);
	100	}
	101
	102
	103	static int ati_create_gatt_pages(int nr_tables)
	104	{
87a17f31 DJ	105	struct ati_page_map **tables;
87a17f31 DJ	106	struct ati_page_map *entry;
1da177e4 LT	107	int retval = 0;
	108	int i;
	109
87a17f31	110	tables = kzalloc((nr_tables + 1) * sizeof(struct ati_page_map *),GFP_KERNEL);
1da177e4 LT	111	if (tables == NULL)
	112	return -ENOMEM;
	113
1da177e4	114	for (i = 0; i < nr_tables; i++) {
87a17f31	115	entry = kzalloc(sizeof(struct ati_page_map), GFP_KERNEL);
190644e1	116	tables[i] = entry;
1da177e4	117	if (entry == NULL) {
1da177e4 LT	118	retval = -ENOMEM;
	119	break;
	120	}
1da177e4	121	retval = ati_create_page_map(entry);
7707ea3b DJ	122	if (retval != 0)
7707ea3b DJ	123	break;
1da177e4	124	}
190644e1	125	ati_generic_private.num_tables = i;
1da177e4 LT	126	ati_generic_private.gatt_pages = tables;
1da177e4 LT	127
89d17b96 DJ	128	if (retval != 0)
89d17b96 DJ	129	ati_free_gatt_pages();
1da177e4 LT	130
	131	return retval;
	132	}
	133
	134	static int is_r200(void)
	135	{
	136	if ((agp_bridge->dev->device == PCI_DEVICE_ID_ATI_RS100) \|\|
	137	(agp_bridge->dev->device == PCI_DEVICE_ID_ATI_RS200) \|\|
	138	(agp_bridge->dev->device == PCI_DEVICE_ID_ATI_RS200_B) \|\|
	139	(agp_bridge->dev->device == PCI_DEVICE_ID_ATI_RS250))
	140	return 1;
	141	return 0;
	142	}
	143
	144	static int ati_fetch_size(void)
	145	{
	146	int i;
	147	u32 temp;
	148	struct aper_size_info_lvl2 *values;
	149
	150	if (is_r200())
	151	pci_read_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, &temp);
	152	else
	153	pci_read_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, &temp);
	154
	155	temp = (temp & 0x0000000e);
	156	values = A_SIZE_LVL2(agp_bridge->driver->aperture_sizes);
	157	for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
	158	if (temp == values[i].size_value) {
	159	agp_bridge->previous_size =
	160	agp_bridge->current_size = (void *) (values + i);
	161
	162	agp_bridge->aperture_size_idx = i;
	163	return values[i].size;
	164	}
	165	}
	166
	167	return 0;
	168	}
	169
	170	static void ati_tlbflush(struct agp_memory * mem)
	171	{
	172	writel(1, ati_generic_private.registers+ATI_GART_CACHE_CNTRL);
	173	readl(ati_generic_private.registers+ATI_GART_CACHE_CNTRL); /* PCI Posting. */
	174	}
	175
	176	static void ati_cleanup(void)
	177	{
	178	struct aper_size_info_lvl2 *previous_size;
	179	u32 temp;
	180
	181	previous_size = A_SIZE_LVL2(agp_bridge->previous_size);
	182
	183	/* Write back the previous size and disable gart translation */
	184	if (is_r200()) {
	185	pci_read_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, &temp);
	186	temp = ((temp & ~(0x0000000f)) \| previous_size->size_value);
	187	pci_write_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, temp);
	188	} else {
	189	pci_read_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, &temp);
	190	temp = ((temp & ~(0x0000000f)) \| previous_size->size_value);
	191	pci_write_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, temp);
	192	}
	193	iounmap((volatile u8 __iomem *)ati_generic_private.registers);
194	}
195
196
197	static int ati_configure(void)
198	{
199	u32 temp;
200
201	/* Get the memory mapped registers */
202	pci_read_config_dword(agp_bridge->dev, ATI_GART_MMBASE_ADDR, &temp);
203	temp = (temp & 0xfffff000);
204	ati_generic_private.registers = (volatile u8 __iomem *) ioremap(temp, 4096);
205
5bdbc7dc ST	206	if (!ati_generic_private.registers)
	207	return -ENOMEM;
	208
1da177e4	209	if (is_r200())
89d17b96	210	pci_write_config_dword(agp_bridge->dev, ATI_RS100_IG_AGPMODE, 0x20000);
1da177e4 LT	211	else
	212	pci_write_config_dword(agp_bridge->dev, ATI_RS300_IG_AGPMODE, 0x20000);
	213
	214	/* address to map too */
89d17b96	215	/*
1da177e4 LT	216	pci_read_config_dword(agp_bridge.dev, AGP_APBASE, &temp);
	217	agp_bridge.gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
	218	printk(KERN_INFO PFX "IGP320 gart_bus_addr: %x\n", agp_bridge.gart_bus_addr);
89d17b96	219	*/
1da177e4 LT	220	writel(0x60000, ati_generic_private.registers+ATI_GART_FEATURE_ID);
	221	readl(ati_generic_private.registers+ATI_GART_FEATURE_ID); /* PCI Posting.*/
	222
	223	/* SIGNALED_SYSTEM_ERROR @ NB_STATUS */
	224	pci_read_config_dword(agp_bridge->dev, 4, &temp);
	225	pci_write_config_dword(agp_bridge->dev, 4, temp \| (1<<14));
	226
	227	/* Write out the address of the gatt table */
	228	writel(agp_bridge->gatt_bus_addr, ati_generic_private.registers+ATI_GART_BASE);
	229	readl(ati_generic_private.registers+ATI_GART_BASE); /* PCI Posting. */
	230
	231	return 0;
	232	}
	233
	234
5dda4986	235	#ifdef CONFIG_PM
a4aec262	236	static int agp_ati_suspend(struct pci_dev *dev, pm_message_t state)
5dda4986	237	{
a4aec262	238	pci_save_state(dev);
b3818ed4	239	pci_set_power_state(dev, 3);
5dda4986	240
a4aec262	241	return 0;
5dda4986 AM	242	}
5dda4986 AM	243
a4aec262	244	static int agp_ati_resume(struct pci_dev *dev)
5dda4986	245	{
b3818ed4	246	pci_set_power_state(dev, 0);
a4aec262	247	pci_restore_state(dev);
5dda4986	248
a4aec262	249	return ati_configure();
5dda4986 AM	250	}
	251	#endif
	252
1da177e4	253	/*
d6e05edc	254	*Since we don't need contiguous memory we just try
1da177e4 LT	255	* to get the gatt table once
	256	*/
	257
	258	#define GET_PAGE_DIR_OFF(addr) (addr >> 22)
	259	#define GET_PAGE_DIR_IDX(addr) (GET_PAGE_DIR_OFF(addr) - \
	260	GET_PAGE_DIR_OFF(agp_bridge->gart_bus_addr))
	261	#define GET_GATT_OFF(addr) ((addr & 0x003ff000) >> 12)
	262	#undef GET_GATT
	263	#define GET_GATT(addr) (ati_generic_private.gatt_pages[\
	264	GET_PAGE_DIR_IDX(addr)]->remapped)
	265
	266	static int ati_insert_memory(struct agp_memory * mem,
	267	off_t pg_start, int type)
	268	{
	269	int i, j, num_entries;
	270	unsigned long __iomem *cur_gatt;
	271	unsigned long addr;
a95fe463	272	int mask_type;
1da177e4 LT	273
	274	num_entries = A_SIZE_LVL2(agp_bridge->current_size)->num_entries;
	275
a95fe463 DA	276	mask_type = agp_generic_type_to_mask_type(mem->bridge, type);
a95fe463 DA	277	if (mask_type != 0 \|\| type != mem->type)
1da177e4 LT	278	return -EINVAL;
1da177e4 LT	279
a95fe463 DA	280	if (mem->page_count == 0)
	281	return 0;
	282
1da177e4 LT	283	if ((pg_start + mem->page_count) > num_entries)
	284	return -EINVAL;
	285
	286	j = pg_start;
	287	while (j < (pg_start + mem->page_count)) {
	288	addr = (j * PAGE_SIZE) + agp_bridge->gart_bus_addr;
	289	cur_gatt = GET_GATT(addr);
	290	if (!PGE_EMPTY(agp_bridge,readl(cur_gatt+GET_GATT_OFF(addr))))
	291	return -EBUSY;
	292	j++;
	293	}
	294
c7258012	295	if (!mem->is_flushed) {
1da177e4 LT	296	/CACHE_FLUSH(); /
1da177e4 LT	297	global_cache_flush();
c7258012	298	mem->is_flushed = true;
1da177e4 LT	299	}
	300
	301	for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
	302	addr = (j * PAGE_SIZE) + agp_bridge->gart_bus_addr;
	303	cur_gatt = GET_GATT(addr);
07613ba2 DA	304	writel(agp_bridge->driver->mask_memory(agp_bridge,
	305	mem->pages[i], mem->type),
	306	cur_gatt+GET_GATT_OFF(addr));
1da177e4	307	}
a95fe463	308	readl(GET_GATT(agp_bridge->gart_bus_addr)); /* PCI posting */
1da177e4 LT	309	agp_bridge->driver->tlb_flush(mem);
	310	return 0;
	311	}
	312
	313	static int ati_remove_memory(struct agp_memory * mem, off_t pg_start,
	314	int type)
	315	{
	316	int i;
	317	unsigned long __iomem *cur_gatt;
	318	unsigned long addr;
a95fe463	319	int mask_type;
1da177e4	320
a95fe463 DA	321	mask_type = agp_generic_type_to_mask_type(mem->bridge, type);
a95fe463 DA	322	if (mask_type != 0 \|\| type != mem->type)
1da177e4	323	return -EINVAL;
89d17b96	324
a95fe463 DA	325	if (mem->page_count == 0)
	326	return 0;
	327
1da177e4 LT	328	for (i = pg_start; i < (mem->page_count + pg_start); i++) {
	329	addr = (i * PAGE_SIZE) + agp_bridge->gart_bus_addr;
	330	cur_gatt = GET_GATT(addr);
	331	writel(agp_bridge->scratch_page, cur_gatt+GET_GATT_OFF(addr));
1da177e4 LT	332	}
1da177e4 LT	333
a95fe463	334	readl(GET_GATT(agp_bridge->gart_bus_addr)); /* PCI posting */
1da177e4 LT	335	agp_bridge->driver->tlb_flush(mem);
	336	return 0;
	337	}
	338
	339	static int ati_create_gatt_table(struct agp_bridge_data *bridge)
	340	{
	341	struct aper_size_info_lvl2 *value;
87a17f31	342	struct ati_page_map page_dir;
1da177e4 LT	343	unsigned long addr;
	344	int retval;
	345	u32 temp;
	346	int i;
	347	struct aper_size_info_lvl2 *current_size;
	348
	349	value = A_SIZE_LVL2(agp_bridge->current_size);
	350	retval = ati_create_page_map(&page_dir);
	351	if (retval != 0)
	352	return retval;
	353
	354	retval = ati_create_gatt_pages(value->num_entries / 1024);
	355	if (retval != 0) {
	356	ati_free_page_map(&page_dir);
	357	return retval;
	358	}
	359
	360	agp_bridge->gatt_table_real = (u32 *)page_dir.real;
	361	agp_bridge->gatt_table = (u32 __iomem *) page_dir.remapped;
07eee78e	362	agp_bridge->gatt_bus_addr = virt_to_gart(page_dir.real);
1da177e4 LT	363
	364	/* Write out the size register */
	365	current_size = A_SIZE_LVL2(agp_bridge->current_size);
	366
	367	if (is_r200()) {
	368	pci_read_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, &temp);
	369	temp = (((temp & ~(0x0000000e)) \| current_size->size_value)
	370	\| 0x00000001);
	371	pci_write_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, temp);
	372	pci_read_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, &temp);
	373	} else {
	374	pci_read_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, &temp);
	375	temp = (((temp & ~(0x0000000e)) \| current_size->size_value)
	376	\| 0x00000001);
	377	pci_write_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, temp);
	378	pci_read_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, &temp);
	379	}
	380
	381	/*
	382	* Get the address for the gart region.
	383	* This is a bus address even on the alpha, b/c its
	384	* used to program the agp master not the cpu
	385	*/
	386	pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
	387	addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
	388	agp_bridge->gart_bus_addr = addr;
	389
	390	/* Calculate the agp offset */
6a92a4e0	391	for (i = 0; i < value->num_entries / 1024; i++, addr += 0x00400000) {
07eee78e	392	writel(virt_to_gart(ati_generic_private.gatt_pages[i]->real) \| 1,
1da177e4 LT	393	page_dir.remapped+GET_PAGE_DIR_OFF(addr));
	394	readl(page_dir.remapped+GET_PAGE_DIR_OFF(addr)); /* PCI Posting. */
	395	}
	396
	397	return 0;
	398	}
	399
	400	static int ati_free_gatt_table(struct agp_bridge_data *bridge)
	401	{
87a17f31	402	struct ati_page_map page_dir;
1da177e4 LT	403
	404	page_dir.real = (unsigned long *)agp_bridge->gatt_table_real;
	405	page_dir.remapped = (unsigned long __iomem *)agp_bridge->gatt_table;
	406
	407	ati_free_gatt_pages();
	408	ati_free_page_map(&page_dir);
	409	return 0;
	410	}
	411
e5524f35	412	static const struct agp_bridge_driver ati_generic_bridge = {
1da177e4 LT	413	.owner = THIS_MODULE,
	414	.aperture_sizes = ati_generic_sizes,
	415	.size_type = LVL2_APER_SIZE,
	416	.num_aperture_sizes = 7,
	417	.configure = ati_configure,
	418	.fetch_size = ati_fetch_size,
	419	.cleanup = ati_cleanup,
	420	.tlb_flush = ati_tlbflush,
	421	.mask_memory = agp_generic_mask_memory,
	422	.masks = ati_generic_masks,
	423	.agp_enable = agp_generic_enable,
	424	.cache_flush = global_cache_flush,
	425	.create_gatt_table = ati_create_gatt_table,
	426	.free_gatt_table = ati_free_gatt_table,
	427	.insert_memory = ati_insert_memory,
	428	.remove_memory = ati_remove_memory,
	429	.alloc_by_type = agp_generic_alloc_by_type,
	430	.free_by_type = agp_generic_free_by_type,
	431	.agp_alloc_page = agp_generic_alloc_page,
5f310b63	432	.agp_alloc_pages = agp_generic_alloc_pages,
1da177e4	433	.agp_destroy_page = agp_generic_destroy_page,
5f310b63	434	.agp_destroy_pages = agp_generic_destroy_pages,
a030ce44	435	.agp_type_to_mask_type = agp_generic_type_to_mask_type,
1da177e4 LT	436	};
	437
	438
	439	static struct agp_device_ids ati_agp_device_ids[] __devinitdata =
	440	{
	441	{
	442	.device_id = PCI_DEVICE_ID_ATI_RS100,
	443	.chipset_name = "IGP320/M",
	444	},
	445	{
	446	.device_id = PCI_DEVICE_ID_ATI_RS200,
	447	.chipset_name = "IGP330/340/345/350/M",
	448	},
	449	{
	450	.device_id = PCI_DEVICE_ID_ATI_RS200_B,
	451	.chipset_name = "IGP345M",
	452	},
	453	{
	454	.device_id = PCI_DEVICE_ID_ATI_RS250,
	455	.chipset_name = "IGP7000/M",
	456	},
	457	{
	458	.device_id = PCI_DEVICE_ID_ATI_RS300_100,
	459	.chipset_name = "IGP9100/M",
	460	},
	461	{
	462	.device_id = PCI_DEVICE_ID_ATI_RS300_133,
	463	.chipset_name = "IGP9100/M",
	464	},
	465	{
	466	.device_id = PCI_DEVICE_ID_ATI_RS300_166,
	467	.chipset_name = "IGP9100/M",
	468	},
	469	{
	470	.device_id = PCI_DEVICE_ID_ATI_RS300_200,
	471	.chipset_name = "IGP9100/M",
	472	},
df0bcab2 AK	473	{
	474	.device_id = PCI_DEVICE_ID_ATI_RS350_133,
	475	.chipset_name = "IGP9000/M",
	476	},
9d1ef8a6 DJ	477	{
	478	.device_id = PCI_DEVICE_ID_ATI_RS350_200,
	479	.chipset_name = "IGP9100/M",
	480	},
1da177e4 LT	481	{ }, /* dummy final entry, always present */
	482	};
	483
	484	static int __devinit agp_ati_probe(struct pci_dev *pdev,
	485	const struct pci_device_id *ent)
	486	{
	487	struct agp_device_ids *devs = ati_agp_device_ids;
	488	struct agp_bridge_data *bridge;
	489	u8 cap_ptr;
	490	int j;
	491
	492	cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
	493	if (!cap_ptr)
	494	return -ENODEV;
	495
	496	/* probe for known chipsets */
	497	for (j = 0; devs[j].chipset_name; j++) {
	498	if (pdev->device == devs[j].device_id)
	499	goto found;
	500	}
	501
e3cf6951 BH	502	dev_err(&pdev->dev, "unsupported Ati chipset [%04x/%04x])\n",
e3cf6951 BH	503	pdev->vendor, pdev->device);
1da177e4 LT	504	return -ENODEV;
	505
	506	found:
	507	bridge = agp_alloc_bridge();
	508	if (!bridge)
	509	return -ENOMEM;
	510
	511	bridge->dev = pdev;
	512	bridge->capndx = cap_ptr;
1da177e4	513
89d17b96	514	bridge->driver = &ati_generic_bridge;
1da177e4	515
e3cf6951	516	dev_info(&pdev->dev, "Ati %s chipset\n", devs[j].chipset_name);
1da177e4 LT	517
	518	/* Fill in the mode register */
	519	pci_read_config_dword(pdev,
	520	bridge->capndx+PCI_AGP_STATUS,
	521	&bridge->mode);
	522
	523	pci_set_drvdata(pdev, bridge);
	524	return agp_add_bridge(bridge);
	525	}
	526
	527	static void __devexit agp_ati_remove(struct pci_dev *pdev)
	528	{
	529	struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
	530
	531	agp_remove_bridge(bridge);
	532	agp_put_bridge(bridge);
	533	}
	534
	535	static struct pci_device_id agp_ati_pci_table[] = {
	536	{
	537	.class = (PCI_CLASS_BRIDGE_HOST << 8),
	538	.class_mask = ~0,
	539	.vendor = PCI_VENDOR_ID_ATI,
	540	.device = PCI_ANY_ID,
	541	.subvendor = PCI_ANY_ID,
	542	.subdevice = PCI_ANY_ID,
	543	},
	544	{ }
	545	};
	546
	547	MODULE_DEVICE_TABLE(pci, agp_ati_pci_table);
	548
	549	static struct pci_driver agp_ati_pci_driver = {
	550	.name = "agpgart-ati",
	551	.id_table = agp_ati_pci_table,
	552	.probe = agp_ati_probe,
	553	.remove = agp_ati_remove,
5dda4986	554	#ifdef CONFIG_PM
5dda4986	555	.suspend = agp_ati_suspend,
a4aec262	556	.resume = agp_ati_resume,
5dda4986	557	#endif
1da177e4 LT	558	};
	559
	560	static int __init agp_ati_init(void)
	561	{
	562	if (agp_off)
	563	return -EINVAL;
	564	return pci_register_driver(&agp_ati_pci_driver);
	565	}
	566
	567	static void __exit agp_ati_cleanup(void)
	568	{
	569	pci_unregister_driver(&agp_ati_pci_driver);
	570	}
	571
	572	module_init(agp_ati_init);
	573	module_exit(agp_ati_cleanup);
	574
f4432c5c	575	MODULE_AUTHOR("Dave Jones <davej@redhat.com>");
1da177e4 LT	576	MODULE_LICENSE("GPL and additional rights");
1da177e4 LT	577