intel-agp.c

linux-2.6.15.6

	.agp_alloc_page		= agp_generic_alloc_page,
	.agp_destroy_page	= agp_generic_destroy_page,
};

static struct agp_bridge_driver intel_845_driver = {
	.owner			= THIS_MODULE,
	.aperture_sizes		= intel_8xx_sizes,
	.size_type		= U8_APER_SIZE,
	.num_aperture_sizes	= 7,
	.configure		= intel_845_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,
};

static struct agp_bridge_driver intel_850_driver = {
	.owner			= THIS_MODULE,
	.aperture_sizes		= intel_8xx_sizes,
	.size_type		= U8_APER_SIZE,
	.num_aperture_sizes	= 7,
	.configure		= intel_850_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,
};

static struct agp_bridge_driver intel_860_driver = {
	.owner			= THIS_MODULE,
	.aperture_sizes		= intel_8xx_sizes,
	.size_type		= U8_APER_SIZE,
	.num_aperture_sizes	= 7,
	.configure		= intel_860_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,
};

static struct agp_bridge_driver intel_915_driver = {
	.owner			= THIS_MODULE,
	.aperture_sizes		= intel_i830_sizes,
	.size_type		= FIXED_APER_SIZE,
	.num_aperture_sizes	= 3,
	.needs_scratch_page	= TRUE,
	.configure		= intel_i915_configure,
	.fetch_size		= intel_i915_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,
};


static 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,
};

static int find_i810(u16 device)
{
	struct pci_dev *i810_dev;

	i810_dev = pci_get_device(PCI_VENDOR_ID_INTEL, device, NULL);
	if (!i810_dev)
		return 0;
	intel_i810_private.i810_dev = i810_dev;
	return 1;
}

static int find_i830(u16 device)
{
	struct pci_dev *i830_dev;

	i830_dev = pci_get_device(PCI_VENDOR_ID_INTEL, device, NULL);
	if (i830_dev && PCI_FUNC(i830_dev->devfn) != 0) {
		i830_dev = pci_get_device(PCI_VENDOR_ID_INTEL,
				device, i830_dev);
	}

	if (!i830_dev)
		return 0;

	intel_i830_private.i830_dev = i830_dev;
	return 1;
}

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

	cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);

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

	switch (pdev->device) {
	case PCI_DEVICE_ID_INTEL_82443LX_0:
		bridge->driver = &intel_generic_driver;
		name = "440LX";
		break;
	case PCI_DEVICE_ID_INTEL_82443BX_0:
		bridge->driver = &intel_generic_driver;
		name = "440BX";
		break;
	case PCI_DEVICE_ID_INTEL_82443GX_0:
		bridge->driver = &intel_generic_driver;
		name = "440GX";
		break;
	case PCI_DEVICE_ID_INTEL_82810_MC1:
		name = "i810";
		if (!find_i810(PCI_DEVICE_ID_INTEL_82810_IG1))
			goto fail;
		bridge->driver = &intel_810_driver;
		break;
	case PCI_DEVICE_ID_INTEL_82810_MC3:
		name = "i810 DC100";
		if (!find_i810(PCI_DEVICE_ID_INTEL_82810_IG3))
			goto fail;
		bridge->driver = &intel_810_driver;
		break;
	case PCI_DEVICE_ID_INTEL_82810E_MC:
		name = "i810 E";
		if (!find_i810(PCI_DEVICE_ID_INTEL_82810E_IG))
			goto fail;
		bridge->driver = &intel_810_driver;
		break;
	 case PCI_DEVICE_ID_INTEL_82815_MC:
		/*
		 * The i815 can operate either as an i810 style
		 * integrated device, or as an AGP4X motherboard.
		 */
		if (find_i810(PCI_DEVICE_ID_INTEL_82815_CGC))
			bridge->driver = &intel_810_driver;
		else
			bridge->driver = &intel_815_driver;
		name = "i815";
		break;
	case PCI_DEVICE_ID_INTEL_82820_HB:
	case PCI_DEVICE_ID_INTEL_82820_UP_HB:
		bridge->driver = &intel_820_driver;
		name = "i820";
		break;
	case PCI_DEVICE_ID_INTEL_82830_HB:
		if (find_i830(PCI_DEVICE_ID_INTEL_82830_CGC)) {
			bridge->driver = &intel_830_driver;
		} else {
			bridge->driver = &intel_830mp_driver;
		}
		name = "830M";
		break;
	case PCI_DEVICE_ID_INTEL_82840_HB:
		bridge->driver = &intel_840_driver;
		name = "i840";
		break;
	case PCI_DEVICE_ID_INTEL_82845_HB:
		bridge->driver = &intel_845_driver;
		name = "i845";
		break;
	case PCI_DEVICE_ID_INTEL_82845G_HB:
		if (find_i830(PCI_DEVICE_ID_INTEL_82845G_IG)) {
			bridge->driver = &intel_830_driver;
		} else {
			bridge->driver = &intel_845_driver;
		}
		name = "845G";
		break;
	case PCI_DEVICE_ID_INTEL_82850_HB:
		bridge->driver = &intel_850_driver;
		name = "i850";
		break;
	case PCI_DEVICE_ID_INTEL_82855PM_HB:
		bridge->driver = &intel_845_driver;
		name = "855PM";
		break;
	case PCI_DEVICE_ID_INTEL_82855GM_HB:
		if (find_i830(PCI_DEVICE_ID_INTEL_82855GM_IG)) {
			bridge->driver = &intel_830_driver;
			name = "855";
		} else {
			bridge->driver = &intel_845_driver;
			name = "855GM";
		}
		break;
	case PCI_DEVICE_ID_INTEL_82860_HB:
		bridge->driver = &intel_860_driver;
		name = "i860";
		break;
	case PCI_DEVICE_ID_INTEL_82865_HB:
		if (find_i830(PCI_DEVICE_ID_INTEL_82865_IG)) {
			bridge->driver = &intel_830_driver;
		} else {
			bridge->driver = &intel_845_driver;
		}
		name = "865";
		break;
	case PCI_DEVICE_ID_INTEL_82875_HB:
		bridge->driver = &intel_845_driver;
		name = "i875";
		break;
	case PCI_DEVICE_ID_INTEL_82915G_HB:
		if (find_i830(PCI_DEVICE_ID_INTEL_82915G_IG)) {
			bridge->driver = &intel_915_driver;
		} else {
			bridge->driver = &intel_845_driver;
		}
		name = "915G";
		break;
	case PCI_DEVICE_ID_INTEL_82915GM_HB:
		if (find_i830(PCI_DEVICE_ID_INTEL_82915GM_IG)) {
			bridge->driver = &intel_915_driver;
		} else {
			bridge->driver = &intel_845_driver;
		}
		name = "915GM";
		break;
	case PCI_DEVICE_ID_INTEL_82945G_HB:
		if (find_i830(PCI_DEVICE_ID_INTEL_82945G_IG)) {
			bridge->driver = &intel_915_driver;
		} else {
			bridge->driver = &intel_845_driver;
		}
		name = "945G";
		break;
	case PCI_DEVICE_ID_INTEL_7505_0:
		bridge->driver = &intel_7505_driver;
		name = "E7505";
		break;
	case PCI_DEVICE_ID_INTEL_7205_0:
		bridge->driver = &intel_7505_driver;
		name = "E7205";
		break;
	default:
		if (cap_ptr)
			printk(KERN_WARNING PFX "Unsupported Intel chipset (device id: %04x)\n",
			    pdev->device);
		agp_put_bridge(bridge);
		return -ENODEV;
	};

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

	if (bridge->driver == &intel_810_driver)
		bridge->dev_private_data = &intel_i810_private;
	else if (bridge->driver == &intel_830_driver)
		bridge->dev_private_data = &intel_i830_private;

	printk(KERN_INFO PFX "Detected an Intel %s Chipset.\n", 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);

fail:
	printk(KERN_ERR PFX "Detected an Intel %s chipset, "
		"but could not find the secondary device.\n", name);
	agp_put_bridge(bridge);
	return -ENODEV;
}

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_i810_private.i810_dev)
		pci_dev_put(intel_i810_private.i810_dev);
	if (intel_i830_private.i830_dev)
		pci_dev_put(intel_i830_private.i830_dev);

	agp_put_bridge(bridge);
}

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

	pci_restore_state(pdev);

	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();

	return 0;
}

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_82915G_HB),
	ID(PCI_DEVICE_ID_INTEL_82915GM_HB),
	ID(PCI_DEVICE_ID_INTEL_82945G_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),
	.resume		= agp_intel_resume,
};

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");