ali-agp.c 9.7 KB
Newer Older
L
Linus Torvalds 已提交
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152
/*
 * ALi AGPGART routines.
 */

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

#define ALI_AGPCTRL	0xb8
#define ALI_ATTBASE	0xbc
#define ALI_TLBCTRL	0xc0
#define ALI_TAGCTRL	0xc4
#define ALI_CACHE_FLUSH_CTRL	0xD0
#define ALI_CACHE_FLUSH_ADDR_MASK	0xFFFFF000
#define ALI_CACHE_FLUSH_EN	0x100

static int ali_fetch_size(void)
{
	int i;
	u32 temp;
	struct aper_size_info_32 *values;

	pci_read_config_dword(agp_bridge->dev, ALI_ATTBASE, &temp);
	temp &= ~(0xfffffff0);
	values = A_SIZE_32(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 ali_tlbflush(struct agp_memory *mem)
{
	u32 temp;

	pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp);
	temp &= 0xfffffff0;
	temp |= (1<<0 | 1<<1);
	pci_write_config_dword(agp_bridge->dev, ALI_TAGCTRL, temp);
}

static void ali_cleanup(void)
{
	struct aper_size_info_32 *previous_size;
	u32 temp;

	previous_size = A_SIZE_32(agp_bridge->previous_size);

	pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp);
// clear tag
	pci_write_config_dword(agp_bridge->dev, ALI_TAGCTRL,
			((temp & 0xffffff00) | 0x00000001|0x00000002));

	pci_read_config_dword(agp_bridge->dev,  ALI_ATTBASE, &temp);
	pci_write_config_dword(agp_bridge->dev, ALI_ATTBASE,
			((temp & 0x00000ff0) | previous_size->size_value));
}

static int ali_configure(void)
{
	u32 temp;
	struct aper_size_info_32 *current_size;

	current_size = A_SIZE_32(agp_bridge->current_size);

	/* aperture size and gatt addr */
	pci_read_config_dword(agp_bridge->dev, ALI_ATTBASE, &temp);
	temp = (((temp & 0x00000ff0) | (agp_bridge->gatt_bus_addr & 0xfffff000))
			| (current_size->size_value & 0xf));
	pci_write_config_dword(agp_bridge->dev, ALI_ATTBASE, temp);

	/* tlb control */
	pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp);
	pci_write_config_dword(agp_bridge->dev, ALI_TLBCTRL, ((temp & 0xffffff00) | 0x00000010));

	/* address to map to */
	pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
	agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);

#if 0
	if (agp_bridge->type == ALI_M1541) {
		u32 nlvm_addr = 0;

		switch (current_size->size_value) {
			case 0:  break;
			case 1:  nlvm_addr = 0x100000;break;
			case 2:  nlvm_addr = 0x200000;break;
			case 3:  nlvm_addr = 0x400000;break;
			case 4:  nlvm_addr = 0x800000;break;
			case 6:  nlvm_addr = 0x1000000;break;
			case 7:  nlvm_addr = 0x2000000;break;
			case 8:  nlvm_addr = 0x4000000;break;
			case 9:  nlvm_addr = 0x8000000;break;
			case 10: nlvm_addr = 0x10000000;break;
			default: break;
		}
		nlvm_addr--;
		nlvm_addr&=0xfff00000;

		nlvm_addr+= agp_bridge->gart_bus_addr;
		nlvm_addr|=(agp_bridge->gart_bus_addr>>12);
		printk(KERN_INFO PFX "nlvm top &base = %8x\n",nlvm_addr);
	}
#endif

	pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp);
	temp &= 0xffffff7f;		//enable TLB
	pci_write_config_dword(agp_bridge->dev, ALI_TLBCTRL, temp);

	return 0;
}


static void m1541_cache_flush(void)
{
	int i, page_count;
	u32 temp;

	global_cache_flush();

	page_count = 1 << A_SIZE_32(agp_bridge->current_size)->page_order;
	for (i = 0; i < PAGE_SIZE * page_count; i += PAGE_SIZE) {
		pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
				&temp);
		pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
				(((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
				  (agp_bridge->gatt_bus_addr + i)) |
				 ALI_CACHE_FLUSH_EN));
	}
}

static void *m1541_alloc_page(struct agp_bridge_data *bridge)
{
	void *addr = agp_generic_alloc_page(agp_bridge);
	u32 temp;

	if (!addr)
		return NULL;
	
	pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp);
	pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
			(((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
K
Keir Fraser 已提交
153
			  virt_to_gart(addr)) | ALI_CACHE_FLUSH_EN ));
L
Linus Torvalds 已提交
154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176
	return addr;
}

static void ali_destroy_page(void * addr)
{
	if (addr) {
		global_cache_flush();	/* is this really needed?  --hch */
		agp_generic_destroy_page(addr);
	}
}

static void m1541_destroy_page(void * addr)
{
	u32 temp;

	if (addr == NULL)
		return;

	global_cache_flush();

	pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp);
	pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
			(((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
K
Keir Fraser 已提交
177
			  virt_to_gart(addr)) | ALI_CACHE_FLUSH_EN));
L
Linus Torvalds 已提交
178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194
	agp_generic_destroy_page(addr);
}


/* Setup function */

static struct aper_size_info_32 ali_generic_sizes[7] =
{
	{256, 65536, 6, 10},
	{128, 32768, 5, 9},
	{64, 16384, 4, 8},
	{32, 8192, 3, 7},
	{16, 4096, 2, 6},
	{8, 2048, 1, 4},
	{4, 1024, 0, 3}
};

A
Adrian Bunk 已提交
195
static struct agp_bridge_driver ali_generic_bridge = {
L
Linus Torvalds 已提交
196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217
	.owner			= THIS_MODULE,
	.aperture_sizes		= ali_generic_sizes,
	.size_type		= U32_APER_SIZE,
	.num_aperture_sizes	= 7,
	.configure		= ali_configure,
	.fetch_size		= ali_fetch_size,
	.cleanup		= ali_cleanup,
	.tlb_flush		= ali_tlbflush,
	.mask_memory		= agp_generic_mask_memory,
	.masks			= NULL,
	.agp_enable		= agp_generic_enable,
	.cache_flush		= global_cache_flush,
	.create_gatt_table	= agp_generic_create_gatt_table,
	.free_gatt_table	= agp_generic_free_gatt_table,
	.insert_memory		= agp_generic_insert_memory,
	.remove_memory		= agp_generic_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_destroy_page	= ali_destroy_page,
};

A
Adrian Bunk 已提交
218
static struct agp_bridge_driver ali_m1541_bridge = {
L
Linus Torvalds 已提交
219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414
	.owner			= THIS_MODULE,
	.aperture_sizes		= ali_generic_sizes,
	.size_type		= U32_APER_SIZE,
	.num_aperture_sizes	= 7,
	.configure		= ali_configure,
	.fetch_size		= ali_fetch_size,
	.cleanup		= ali_cleanup,
	.tlb_flush		= ali_tlbflush,
	.mask_memory		= agp_generic_mask_memory,
	.masks			= NULL,
	.agp_enable		= agp_generic_enable,
	.cache_flush		= m1541_cache_flush,
	.create_gatt_table	= agp_generic_create_gatt_table,
	.free_gatt_table	= agp_generic_free_gatt_table,
	.insert_memory		= agp_generic_insert_memory,
	.remove_memory		= agp_generic_remove_memory,
	.alloc_by_type		= agp_generic_alloc_by_type,
	.free_by_type		= agp_generic_free_by_type,
	.agp_alloc_page		= m1541_alloc_page,
	.agp_destroy_page	= m1541_destroy_page,
};


static struct agp_device_ids ali_agp_device_ids[] __devinitdata =
{
	{
		.device_id	= PCI_DEVICE_ID_AL_M1541,
		.chipset_name	= "M1541",
	},
	{
		.device_id	= PCI_DEVICE_ID_AL_M1621,
		.chipset_name	= "M1621",
	},
	{
		.device_id	= PCI_DEVICE_ID_AL_M1631,
		.chipset_name	= "M1631",
	},
	{
		.device_id	= PCI_DEVICE_ID_AL_M1632,
		.chipset_name	= "M1632",
	},
	{
		.device_id	= PCI_DEVICE_ID_AL_M1641,
		.chipset_name	= "M1641",
	},
	{
		.device_id	= PCI_DEVICE_ID_AL_M1644,
		.chipset_name	= "M1644",
	},
	{
		.device_id	= PCI_DEVICE_ID_AL_M1647,
		.chipset_name	= "M1647",
	},
	{
		.device_id	= PCI_DEVICE_ID_AL_M1651,
		.chipset_name	= "M1651",
	},
	{
		.device_id	= PCI_DEVICE_ID_AL_M1671,
		.chipset_name	= "M1671",
	},
	{
		.device_id	= PCI_DEVICE_ID_AL_M1681,
		.chipset_name	= "M1681",
	},
	{
		.device_id	= PCI_DEVICE_ID_AL_M1683,
		.chipset_name	= "M1683",
	},

	{ }, /* dummy final entry, always present */
};

static int __devinit agp_ali_probe(struct pci_dev *pdev,
				const struct pci_device_id *ent)
{
	struct agp_device_ids *devs = ali_agp_device_ids;
	struct agp_bridge_data *bridge;
	u8 hidden_1621_id, 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;
	}

	printk(KERN_ERR PFX "Unsupported ALi chipset (device id: %04x)\n",
	     pdev->device);
	return -ENODEV;


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

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

	switch (pdev->device) {
	case PCI_DEVICE_ID_AL_M1541:
		bridge->driver = &ali_m1541_bridge;
		break;
	case PCI_DEVICE_ID_AL_M1621:
		pci_read_config_byte(pdev, 0xFB, &hidden_1621_id);
		switch (hidden_1621_id) {
		case 0x31:
			devs[j].chipset_name = "M1631";
			break;
		case 0x32:
			devs[j].chipset_name = "M1632";
			break;
		case 0x41:
			devs[j].chipset_name = "M1641";
			break;
		case 0x43:
			devs[j].chipset_name = "M????";
			break;
		case 0x47:
			devs[j].chipset_name = "M1647";
			break;
		case 0x51:
			devs[j].chipset_name = "M1651";
			break;
		default:
			break;
		}
		/*FALLTHROUGH*/
	default:
		bridge->driver = &ali_generic_bridge;
	}

	printk(KERN_INFO PFX "Detected ALi %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_ali_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_ali_pci_table[] = {
	{
	.class		= (PCI_CLASS_BRIDGE_HOST << 8),
	.class_mask	= ~0,
	.vendor		= PCI_VENDOR_ID_AL,
	.device		= PCI_ANY_ID,
	.subvendor	= PCI_ANY_ID,
	.subdevice	= PCI_ANY_ID,
	},
	{ }
};

MODULE_DEVICE_TABLE(pci, agp_ali_pci_table);

static struct pci_driver agp_ali_pci_driver = {
	.name		= "agpgart-ali",
	.id_table	= agp_ali_pci_table,
	.probe		= agp_ali_probe,
	.remove		= agp_ali_remove,
};

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

static void __exit agp_ali_cleanup(void)
{
	pci_unregister_driver(&agp_ali_pci_driver);
}

module_init(agp_ali_init);
module_exit(agp_ali_cleanup);

MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>");
MODULE_LICENSE("GPL and additional rights");