intel-agp.c

linux 内核源代码

	.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	= agp_generic_destroy_page,
	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
};

static const struct agp_bridge_driver intel_915_driver = {
	.owner			= THIS_MODULE,
	.aperture_sizes		= intel_i830_sizes,
	.size_type		= FIXED_APER_SIZE,
	.num_aperture_sizes	= 4,
	.needs_scratch_page	= TRUE,
	.configure		= intel_i915_configure,
	.fetch_size		= intel_i9xx_fetch_size,
	.cleanup		= intel_i915_cleanup,
	.tlb_flush		= intel_i810_tlbflush,
	.mask_memory		= intel_i810_mask_memory,
	.masks			= intel_i810_masks,
	.agp_enable		= intel_i810_agp_enable,
	.cache_flush		= global_cache_flush,
	.create_gatt_table	= intel_i915_create_gatt_table,
	.free_gatt_table	= intel_i830_free_gatt_table,
	.insert_memory		= intel_i915_insert_entries,
	.remove_memory		= intel_i915_remove_entries,
	.alloc_by_type		= intel_i830_alloc_by_type,
	.free_by_type		= intel_i810_free_by_type,
	.agp_alloc_page		= agp_generic_alloc_page,
	.agp_destroy_page	= agp_generic_destroy_page,
	.agp_type_to_mask_type  = intel_i830_type_to_mask_type,
};

static const struct agp_bridge_driver intel_i965_driver = {
       .owner                  = THIS_MODULE,
       .aperture_sizes         = intel_i830_sizes,
       .size_type              = FIXED_APER_SIZE,
       .num_aperture_sizes     = 4,
       .needs_scratch_page     = TRUE,
       .configure              = intel_i915_configure,
       .fetch_size             = intel_i9xx_fetch_size,
       .cleanup                = intel_i915_cleanup,
       .tlb_flush              = intel_i810_tlbflush,
       .mask_memory            = intel_i965_mask_memory,
       .masks                  = intel_i810_masks,
       .agp_enable             = intel_i810_agp_enable,
       .cache_flush            = global_cache_flush,
       .create_gatt_table      = intel_i965_create_gatt_table,
       .free_gatt_table        = intel_i830_free_gatt_table,
       .insert_memory          = intel_i915_insert_entries,
       .remove_memory          = intel_i915_remove_entries,
       .alloc_by_type          = intel_i830_alloc_by_type,
       .free_by_type           = intel_i810_free_by_type,
       .agp_alloc_page         = agp_generic_alloc_page,
       .agp_destroy_page       = agp_generic_destroy_page,
       .agp_type_to_mask_type  = intel_i830_type_to_mask_type,
};

static const struct agp_bridge_driver intel_7505_driver = {
	.owner			= THIS_MODULE,
	.aperture_sizes		= intel_8xx_sizes,
	.size_type		= U8_APER_SIZE,
	.num_aperture_sizes	= 7,
	.configure		= intel_7505_configure,
	.fetch_size		= intel_8xx_fetch_size,
	.cleanup		= intel_8xx_cleanup,
	.tlb_flush		= intel_8xx_tlbflush,
	.mask_memory		= agp_generic_mask_memory,
	.masks			= intel_generic_masks,
	.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	= agp_generic_destroy_page,
	.agp_type_to_mask_type  = agp_generic_type_to_mask_type,
};

static const struct agp_bridge_driver intel_g33_driver = {
	.owner                  = THIS_MODULE,
	.aperture_sizes         = intel_i830_sizes,
	.size_type              = FIXED_APER_SIZE,
	.num_aperture_sizes     = 4,
	.needs_scratch_page     = TRUE,
	.configure              = intel_i915_configure,
	.fetch_size             = intel_i9xx_fetch_size,
	.cleanup                = intel_i915_cleanup,
	.tlb_flush              = intel_i810_tlbflush,
	.mask_memory            = intel_i965_mask_memory,
	.masks                  = intel_i810_masks,
	.agp_enable             = intel_i810_agp_enable,
	.cache_flush            = global_cache_flush,
	.create_gatt_table      = intel_i915_create_gatt_table,
	.free_gatt_table        = intel_i830_free_gatt_table,
	.insert_memory          = intel_i915_insert_entries,
	.remove_memory          = intel_i915_remove_entries,
	.alloc_by_type          = intel_i830_alloc_by_type,
	.free_by_type           = intel_i810_free_by_type,
	.agp_alloc_page         = agp_generic_alloc_page,
	.agp_destroy_page       = agp_generic_destroy_page,
	.agp_type_to_mask_type  = intel_i830_type_to_mask_type,
};

static int find_gmch(u16 device)
{
	struct pci_dev *gmch_device;

	gmch_device = pci_get_device(PCI_VENDOR_ID_INTEL, device, NULL);
	if (gmch_device && PCI_FUNC(gmch_device->devfn) != 0) {
		gmch_device = pci_get_device(PCI_VENDOR_ID_INTEL,
                                device, gmch_device);
	}

	if (!gmch_device)
		return 0;

	intel_private.pcidev = gmch_device;
	return 1;
}

/* Table to describe Intel GMCH and AGP/PCIE GART drivers.  At least one of
 * driver and gmch_driver must be non-null, and find_gmch will determine
 * which one should be used if a gmch_chip_id is present.
 */
static const struct intel_driver_description {
	unsigned int chip_id;
	unsigned int gmch_chip_id;
	unsigned int multi_gmch_chip; /* if we have more gfx chip type on this HB. */
	char *name;
	const struct agp_bridge_driver *driver;
	const struct agp_bridge_driver *gmch_driver;
} intel_agp_chipsets[] = {
	{ PCI_DEVICE_ID_INTEL_82443LX_0, 0, 0, "440LX", &intel_generic_driver, NULL },
	{ PCI_DEVICE_ID_INTEL_82443BX_0, 0, 0, "440BX", &intel_generic_driver, NULL },
	{ PCI_DEVICE_ID_INTEL_82443GX_0, 0, 0, "440GX", &intel_generic_driver, NULL },
	{ PCI_DEVICE_ID_INTEL_82810_MC1, PCI_DEVICE_ID_INTEL_82810_IG1, 0, "i810",
		NULL, &intel_810_driver },
	{ PCI_DEVICE_ID_INTEL_82810_MC3, PCI_DEVICE_ID_INTEL_82810_IG3, 0, "i810",
		NULL, &intel_810_driver },
	{ PCI_DEVICE_ID_INTEL_82810E_MC, PCI_DEVICE_ID_INTEL_82810E_IG, 0, "i810",
		NULL, &intel_810_driver },
	{ PCI_DEVICE_ID_INTEL_82815_MC, PCI_DEVICE_ID_INTEL_82815_CGC, 0, "i815",
		&intel_815_driver, &intel_810_driver },
	{ PCI_DEVICE_ID_INTEL_82820_HB, 0, 0, "i820", &intel_820_driver, NULL },
	{ PCI_DEVICE_ID_INTEL_82820_UP_HB, 0, 0, "i820", &intel_820_driver, NULL },
	{ PCI_DEVICE_ID_INTEL_82830_HB, PCI_DEVICE_ID_INTEL_82830_CGC, 0, "830M",
		&intel_830mp_driver, &intel_830_driver },
	{ PCI_DEVICE_ID_INTEL_82840_HB, 0, 0, "i840", &intel_840_driver, NULL },
	{ PCI_DEVICE_ID_INTEL_82845_HB, 0, 0, "845G", &intel_845_driver, NULL },
	{ PCI_DEVICE_ID_INTEL_82845G_HB, PCI_DEVICE_ID_INTEL_82845G_IG, 0, "830M",
		&intel_845_driver, &intel_830_driver },
	{ PCI_DEVICE_ID_INTEL_82850_HB, 0, 0, "i850", &intel_850_driver, NULL },
	{ PCI_DEVICE_ID_INTEL_82855PM_HB, 0, 0, "855PM", &intel_845_driver, NULL },
	{ PCI_DEVICE_ID_INTEL_82855GM_HB, PCI_DEVICE_ID_INTEL_82855GM_IG, 0, "855GM",
		&intel_845_driver, &intel_830_driver },
	{ PCI_DEVICE_ID_INTEL_82860_HB, 0, 0, "i860", &intel_860_driver, NULL },
	{ PCI_DEVICE_ID_INTEL_82865_HB, PCI_DEVICE_ID_INTEL_82865_IG, 0, "865",
		&intel_845_driver, &intel_830_driver },
	{ PCI_DEVICE_ID_INTEL_82875_HB, 0, 0, "i875", &intel_845_driver, NULL },
	{ PCI_DEVICE_ID_INTEL_E7221_HB, PCI_DEVICE_ID_INTEL_E7221_IG, 0, "E7221 (i915)",
		NULL, &intel_915_driver },
	{ PCI_DEVICE_ID_INTEL_82915G_HB, PCI_DEVICE_ID_INTEL_82915G_IG, 0, "915G",
		NULL, &intel_915_driver },
	{ PCI_DEVICE_ID_INTEL_82915GM_HB, PCI_DEVICE_ID_INTEL_82915GM_IG, 0, "915GM",
		NULL, &intel_915_driver },
	{ PCI_DEVICE_ID_INTEL_82945G_HB, PCI_DEVICE_ID_INTEL_82945G_IG, 0, "945G",
		NULL, &intel_915_driver },
	{ PCI_DEVICE_ID_INTEL_82945GM_HB, PCI_DEVICE_ID_INTEL_82945GM_IG, 0, "945GM",
		NULL, &intel_915_driver },
	{ PCI_DEVICE_ID_INTEL_82945GME_HB, PCI_DEVICE_ID_INTEL_82945GME_IG, 0, "945GME",
		NULL, &intel_915_driver },
	{ PCI_DEVICE_ID_INTEL_82946GZ_HB, PCI_DEVICE_ID_INTEL_82946GZ_IG, 0, "946GZ",
		NULL, &intel_i965_driver },
	{ PCI_DEVICE_ID_INTEL_82965G_1_HB, PCI_DEVICE_ID_INTEL_82965G_1_IG, 0, "965G",
		NULL, &intel_i965_driver },
	{ PCI_DEVICE_ID_INTEL_82965Q_HB, PCI_DEVICE_ID_INTEL_82965Q_IG, 0, "965Q",
		NULL, &intel_i965_driver },
	{ PCI_DEVICE_ID_INTEL_82965G_HB, PCI_DEVICE_ID_INTEL_82965G_IG, 0, "965G",
		NULL, &intel_i965_driver },
	{ PCI_DEVICE_ID_INTEL_82965GM_HB, PCI_DEVICE_ID_INTEL_82965GM_IG, 0, "965GM",
		NULL, &intel_i965_driver },
	{ PCI_DEVICE_ID_INTEL_82965GME_HB, PCI_DEVICE_ID_INTEL_82965GME_IG, 0, "965GME/GLE",
		NULL, &intel_i965_driver },
	{ PCI_DEVICE_ID_INTEL_7505_0, 0, 0, "E7505", &intel_7505_driver, NULL },
	{ PCI_DEVICE_ID_INTEL_7205_0, 0, 0, "E7205", &intel_7505_driver, NULL },
	{ PCI_DEVICE_ID_INTEL_G33_HB, PCI_DEVICE_ID_INTEL_G33_IG, 0, "G33",
		NULL, &intel_g33_driver },
	{ PCI_DEVICE_ID_INTEL_Q35_HB, PCI_DEVICE_ID_INTEL_Q35_IG, 0, "Q35",
		NULL, &intel_g33_driver },
	{ PCI_DEVICE_ID_INTEL_Q33_HB, PCI_DEVICE_ID_INTEL_Q33_IG, 0, "Q33",
		NULL, &intel_g33_driver },
	{ 0, 0, 0, NULL, NULL, NULL }
};

static int __devinit agp_intel_probe(struct pci_dev *pdev,
				     const struct pci_device_id *ent)
{
	struct agp_bridge_data *bridge;
	u8 cap_ptr = 0;
	struct resource *r;
	int i;

	cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);

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

	for (i = 0; intel_agp_chipsets[i].name != NULL; i++) {
		/* In case that multiple models of gfx chip may
		   stand on same host bridge type, this can be
		   sure we detect the right IGD. */
		if (pdev->device == intel_agp_chipsets[i].chip_id) {
			if ((intel_agp_chipsets[i].gmch_chip_id != 0) &&
				find_gmch(intel_agp_chipsets[i].gmch_chip_id)) {
				bridge->driver =
					intel_agp_chipsets[i].gmch_driver;
				break;
			} else if (intel_agp_chipsets[i].multi_gmch_chip) {
				continue;
			} else {
				bridge->driver = intel_agp_chipsets[i].driver;
				break;
			}
		}
	}

	if (intel_agp_chipsets[i].name == NULL) {
		if (cap_ptr)
			printk(KERN_WARNING PFX "Unsupported Intel chipset"
                               "(device id: %04x)\n", pdev->device);
		agp_put_bridge(bridge);
		return -ENODEV;
	}

	if (bridge->driver == NULL) {
		/* bridge has no AGP and no IGD detected */
		if (cap_ptr)
			printk(KERN_WARNING PFX "Failed to find bridge device "
				"(chip_id: %04x)\n",
				intel_agp_chipsets[i].gmch_chip_id);
		agp_put_bridge(bridge);
		return -ENODEV;
        }

	bridge->dev = pdev;
	bridge->capndx = cap_ptr;
	bridge->dev_private_data = &intel_private;

	printk(KERN_INFO PFX "Detected an Intel %s Chipset.\n",
		intel_agp_chipsets[i].name);

	/*
	* The following fixes the case where the BIOS has "forgotten" to
	* provide an address range for the GART.
	* 20030610 - [e-mail]
	*/
	r = &pdev->resource[0];
	if (!r->start && r->end) {
		if (pci_assign_resource(pdev, 0)) {
			printk(KERN_ERR PFX "could not assign resource 0\n");
			agp_put_bridge(bridge);
			return -ENODEV;
		}
	}

	/*
	* If the device has not been properly setup, the following will catch
	* the problem and should stop the system from crashing.
	* 20030610 - [e-mail]
	*/
	if (pci_enable_device(pdev)) {
		printk(KERN_ERR PFX "Unable to Enable PCI device\n");
		agp_put_bridge(bridge);
		return -ENODEV;
	}

	/* Fill in the mode register */
	if (cap_ptr) {
		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_intel_remove(struct pci_dev *pdev)
{
	struct agp_bridge_data *bridge = pci_get_drvdata(pdev);

	agp_remove_bridge(bridge);

	if (intel_private.pcidev)
		pci_dev_put(intel_private.pcidev);

	agp_put_bridge(bridge);
}

#ifdef CONFIG_PM
static int agp_intel_resume(struct pci_dev *pdev)
{
	struct agp_bridge_data *bridge = pci_get_drvdata(pdev);

	pci_restore_state(pdev);

	/* We should restore our graphics device's config space,
	 * as host bridge (00:00) resumes before graphics device (02:00),
	 * then our access to its pci space can work right.
	 */
	if (intel_private.pcidev)
		pci_restore_state(intel_private.pcidev);

	if (bridge->driver == &intel_generic_driver)
		intel_configure();
	else if (bridge->driver == &intel_850_driver)
		intel_850_configure();
	else if (bridge->driver == &intel_845_driver)
		intel_845_configure();
	else if (bridge->driver == &intel_830mp_driver)
		intel_830mp_configure();
	else if (bridge->driver == &intel_915_driver)
		intel_i915_configure();
	else if (bridge->driver == &intel_830_driver)
		intel_i830_configure();
	else if (bridge->driver == &intel_810_driver)
		intel_i810_configure();
	else if (bridge->driver == &intel_i965_driver)
		intel_i915_configure();

	return 0;
}
#endif

static struct pci_device_id agp_intel_pci_table[] = {
#define ID(x)						\
	{						\
	.class		= (PCI_CLASS_BRIDGE_HOST << 8),	\
	.class_mask	= ~0,				\
	.vendor		= PCI_VENDOR_ID_INTEL,		\
	.device		= x,				\
	.subvendor	= PCI_ANY_ID,			\
	.subdevice	= PCI_ANY_ID,			\
	}
	ID(PCI_DEVICE_ID_INTEL_82443LX_0),
	ID(PCI_DEVICE_ID_INTEL_82443BX_0),
	ID(PCI_DEVICE_ID_INTEL_82443GX_0),
	ID(PCI_DEVICE_ID_INTEL_82810_MC1),
	ID(PCI_DEVICE_ID_INTEL_82810_MC3),
	ID(PCI_DEVICE_ID_INTEL_82810E_MC),
	ID(PCI_DEVICE_ID_INTEL_82815_MC),
	ID(PCI_DEVICE_ID_INTEL_82820_HB),
	ID(PCI_DEVICE_ID_INTEL_82820_UP_HB),
	ID(PCI_DEVICE_ID_INTEL_82830_HB),
	ID(PCI_DEVICE_ID_INTEL_82840_HB),
	ID(PCI_DEVICE_ID_INTEL_82845_HB),
	ID(PCI_DEVICE_ID_INTEL_82845G_HB),
	ID(PCI_DEVICE_ID_INTEL_82850_HB),
	ID(PCI_DEVICE_ID_INTEL_82855PM_HB),
	ID(PCI_DEVICE_ID_INTEL_82855GM_HB),
	ID(PCI_DEVICE_ID_INTEL_82860_HB),
	ID(PCI_DEVICE_ID_INTEL_82865_HB),
	ID(PCI_DEVICE_ID_INTEL_82875_HB),
	ID(PCI_DEVICE_ID_INTEL_7505_0),
	ID(PCI_DEVICE_ID_INTEL_7205_0),
	ID(PCI_DEVICE_ID_INTEL_E7221_HB),
	ID(PCI_DEVICE_ID_INTEL_82915G_HB),
	ID(PCI_DEVICE_ID_INTEL_82915GM_HB),
	ID(PCI_DEVICE_ID_INTEL_82945G_HB),
	ID(PCI_DEVICE_ID_INTEL_82945GM_HB),
	ID(PCI_DEVICE_ID_INTEL_82945GME_HB),
	ID(PCI_DEVICE_ID_INTEL_82946GZ_HB),
	ID(PCI_DEVICE_ID_INTEL_82965G_1_HB),
	ID(PCI_DEVICE_ID_INTEL_82965Q_HB),
	ID(PCI_DEVICE_ID_INTEL_82965G_HB),
	ID(PCI_DEVICE_ID_INTEL_82965GM_HB),
	ID(PCI_DEVICE_ID_INTEL_82965GME_HB),
	ID(PCI_DEVICE_ID_INTEL_G33_HB),
	ID(PCI_DEVICE_ID_INTEL_Q35_HB),
	ID(PCI_DEVICE_ID_INTEL_Q33_HB),
	{ }
};

MODULE_DEVICE_TABLE(pci, agp_intel_pci_table);

static struct pci_driver agp_intel_pci_driver = {
	.name		= "agpgart-intel",
	.id_table	= agp_intel_pci_table,
	.probe		= agp_intel_probe,
	.remove		= __devexit_p(agp_intel_remove),
#ifdef CONFIG_PM
	.resume		= agp_intel_resume,
#endif
};

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

static void __exit agp_intel_cleanup(void)
{
	pci_unregister_driver(&agp_intel_pci_driver);
}

module_init(agp_intel_init);
module_exit(agp_intel_cleanup);

MODULE_AUTHOR("Dave Jones <[e-mail]>");
MODULE_LICENSE("GPL and additional rights");