drivers/gpu/drm/mgag200/mgag200_drv.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright 2012 Red Hat
  *
  * Authors: Matthew Garrett
  *          Dave Airlie
  */

 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/vmalloc.h>

 #include <drm/drm_aperture.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_file.h>
 #include <drm/drm_ioctl.h>
 #include <drm/drm_pciids.h>

 #include "mgag200_drv.h"

 int mgag200_modeset = -1;
 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
 module_param_named(modeset, mgag200_modeset, int, 0400);

 /*
  * DRM driver
  */

 DEFINE_DRM_GEM_FOPS(mgag200_driver_fops);

 static const struct drm_driver mgag200_driver = {
 	.driver_features = DRIVER_ATOMIC | DRIVER_GEM | DRIVER_MODESET,
 	.fops = &mgag200_driver_fops,
 	.name = DRIVER_NAME,
 	.desc = DRIVER_DESC,
 	.date = DRIVER_DATE,
 	.major = DRIVER_MAJOR,
 	.minor = DRIVER_MINOR,
 	.patchlevel = DRIVER_PATCHLEVEL,
 	DRM_GEM_SHMEM_DRIVER_OPS,
 };

 /*
  * DRM device
  */

 static bool mgag200_has_sgram(struct mga_device *mdev)
 {
 	struct drm_device *dev = &mdev->base;
 	struct pci_dev *pdev = to_pci_dev(dev->dev);
 	u32 option;
 	int ret;

 	ret = pci_read_config_dword(pdev, PCI_MGA_OPTION, &option);
 	if (drm_WARN(dev, ret, "failed to read PCI config dword: %d\n", ret))
 		return false;

 	return !!(option & PCI_MGA_OPTION_HARDPWMSK);
 }

 static int mgag200_regs_init(struct mga_device *mdev)
 {
 	struct drm_device *dev = &mdev->base;
 	struct pci_dev *pdev = to_pci_dev(dev->dev);
 	u32 option, option2;
 	u8 crtcext3;

 	switch (mdev->type) {
 	case G200_PCI:
 	case G200_AGP:
 		if (mgag200_has_sgram(mdev))
 			option = 0x4049cd21;
 		else
 			option = 0x40499121;
 		option2 = 0x00008000;
 		break;
 	case G200_SE_A:
 	case G200_SE_B:
 		option = 0x40049120;
 		if (mgag200_has_sgram(mdev))
 			option |= PCI_MGA_OPTION_HARDPWMSK;
 		option2 = 0x00008000;
 		break;
 	case G200_WB:
 	case G200_EW3:
 		option = 0x41049120;
 		option2 = 0x0000b000;
 		break;
 	case G200_EV:
 		option = 0x00000120;
 		option2 = 0x0000b000;
 		break;
 	case G200_EH:
 	case G200_EH3:
 		option = 0x00000120;
 		option2 = 0x0000b000;
 		break;
 	default:
 		option = 0;
 		option2 = 0;
 	}

 	if (option)
 		pci_write_config_dword(pdev, PCI_MGA_OPTION, option);
 	if (option2)
 		pci_write_config_dword(pdev, PCI_MGA_OPTION2, option2);

 	/* BAR 1 contains registers */
 	mdev->rmmio_base = pci_resource_start(pdev, 1);
 	mdev->rmmio_size = pci_resource_len(pdev, 1);

 	if (!devm_request_mem_region(dev->dev, mdev->rmmio_base,
 				     mdev->rmmio_size, "mgadrmfb_mmio")) {
 		drm_err(dev, "can't reserve mmio registers\n");
 		return -ENOMEM;
 	}

 	mdev->rmmio = pcim_iomap(pdev, 1, 0);
 	if (mdev->rmmio == NULL)
 		return -ENOMEM;

 	RREG_ECRT(0x03, crtcext3);
 	crtcext3 |= MGAREG_CRTCEXT3_MGAMODE;
 	WREG_ECRT(0x03, crtcext3);

 	return 0;
 }

 static void mgag200_g200_interpret_bios(struct mga_device *mdev,
 					const unsigned char *bios,
 					size_t size)
 {
 	static const char matrox[] = {'M', 'A', 'T', 'R', 'O', 'X'};
 	static const unsigned int expected_length[6] = {
 		0, 64, 64, 64, 128, 128
 	};
 	struct drm_device *dev = &mdev->base;
 	const unsigned char *pins;
 	unsigned int pins_len, version;
 	int offset;
 	int tmp;

 	/* Test for MATROX string. */
 	if (size < 45 + sizeof(matrox))
 		return;
 	if (memcmp(&bios[45], matrox, sizeof(matrox)) != 0)
 		return;

 	/* Get the PInS offset. */
 	if (size < MGA_BIOS_OFFSET + 2)
 		return;
 	offset = (bios[MGA_BIOS_OFFSET + 1] << 8) | bios[MGA_BIOS_OFFSET];

 	/* Get PInS data structure. */

 	if (size < offset + 6)
 		return;
 	pins = bios + offset;
 	if (pins[0] == 0x2e && pins[1] == 0x41) {
 		version = pins[5];
 		pins_len = pins[2];
 	} else {
 		version = 1;
 		pins_len = pins[0] + (pins[1] << 8);
 	}

 	if (version < 1 || version > 5) {
 		drm_warn(dev, "Unknown BIOS PInS version: %d\n", version);
 		return;
 	}
 	if (pins_len != expected_length[version]) {
 		drm_warn(dev, "Unexpected BIOS PInS size: %d expected: %d\n",
 			 pins_len, expected_length[version]);
 		return;
 	}
 	if (size < offset + pins_len)
 		return;

 	drm_dbg_kms(dev, "MATROX BIOS PInS version %d size: %d found\n",
 		    version, pins_len);

 	/* Extract the clock values */

 	switch (version) {
 	case 1:
 		tmp = pins[24] + (pins[25] << 8);
 		if (tmp)
 			mdev->model.g200.pclk_max = tmp * 10;
 		break;
 	case 2:
 		if (pins[41] != 0xff)
 			mdev->model.g200.pclk_max = (pins[41] + 100) * 1000;
 		break;
 	case 3:
 		if (pins[36] != 0xff)
 			mdev->model.g200.pclk_max = (pins[36] + 100) * 1000;
 		if (pins[52] & 0x20)
 			mdev->model.g200.ref_clk = 14318;
 		break;
 	case 4:
 		if (pins[39] != 0xff)
 			mdev->model.g200.pclk_max = pins[39] * 4 * 1000;
 		if (pins[92] & 0x01)
 			mdev->model.g200.ref_clk = 14318;
 		break;
 	case 5:
 		tmp = pins[4] ? 8000 : 6000;
 		if (pins[123] != 0xff)
 			mdev->model.g200.pclk_min = pins[123] * tmp;
 		if (pins[38] != 0xff)
 			mdev->model.g200.pclk_max = pins[38] * tmp;
 		if (pins[110] & 0x01)
 			mdev->model.g200.ref_clk = 14318;
 		break;
 	default:
 		break;
 	}
 }

 static void mgag200_g200_init_refclk(struct mga_device *mdev)
 {
 	struct drm_device *dev = &mdev->base;
 	struct pci_dev *pdev = to_pci_dev(dev->dev);
 	unsigned char __iomem *rom;
 	unsigned char *bios;
 	size_t size;

 	mdev->model.g200.pclk_min = 50000;
 	mdev->model.g200.pclk_max = 230000;
 	mdev->model.g200.ref_clk = 27050;

 	rom = pci_map_rom(pdev, &size);
 	if (!rom)
 		return;

 	bios = vmalloc(size);
 	if (!bios)
 		goto out;
 	memcpy_fromio(bios, rom, size);

 	if (size != 0 && bios[0] == 0x55 && bios[1] == 0xaa)
 		mgag200_g200_interpret_bios(mdev, bios, size);

 	drm_dbg_kms(dev, "pclk_min: %ld pclk_max: %ld ref_clk: %ld\n",
 		    mdev->model.g200.pclk_min, mdev->model.g200.pclk_max,
 		    mdev->model.g200.ref_clk);

 	vfree(bios);
 out:
 	pci_unmap_rom(pdev, rom);
 }

 static void mgag200_g200se_init_unique_id(struct mga_device *mdev)
 {
 	struct drm_device *dev = &mdev->base;

 	/* stash G200 SE model number for later use */
 	mdev->model.g200se.unique_rev_id = RREG32(0x1e24);

 	drm_dbg(dev, "G200 SE unique revision id is 0x%x\n",
 		mdev->model.g200se.unique_rev_id);
 }

 static struct mga_device *
 mgag200_device_create(struct pci_dev *pdev, enum mga_type type, unsigned long flags)
 {
 	struct mga_device *mdev;
 	struct drm_device *dev;
 	int ret;

 	mdev = devm_drm_dev_alloc(&pdev->dev, &mgag200_driver, struct mga_device, base);
 	if (IS_ERR(mdev))
 		return mdev;
 	dev = &mdev->base;

 	pci_set_drvdata(pdev, dev);

 	mdev->flags = flags;
 	mdev->type = type;

 	ret = mgag200_regs_init(mdev);
 	if (ret)
 		return ERR_PTR(ret);

 	if (mdev->type == G200_PCI || mdev->type == G200_AGP)
 		mgag200_g200_init_refclk(mdev);
 	else if (IS_G200_SE(mdev))
 		mgag200_g200se_init_unique_id(mdev);

 	ret = mgag200_mm_init(mdev);
 	if (ret)
 		return ERR_PTR(ret);

 	ret = mgag200_modeset_init(mdev);
 	if (ret)
 		return ERR_PTR(ret);

 	return mdev;
 }

 /*
  * PCI driver
  */

 static const struct pci_device_id mgag200_pciidlist[] = {
 	{ PCI_VENDOR_ID_MATROX, 0x520, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_PCI },
 	{ PCI_VENDOR_ID_MATROX, 0x521, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_AGP },
 	{ PCI_VENDOR_ID_MATROX, 0x522, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 		G200_SE_A | MGAG200_FLAG_HW_BUG_NO_STARTADD},
 	{ PCI_VENDOR_ID_MATROX, 0x524, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_B },
 	{ PCI_VENDOR_ID_MATROX, 0x530, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EV },
 	{ PCI_VENDOR_ID_MATROX, 0x532, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_WB },
 	{ PCI_VENDOR_ID_MATROX, 0x533, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH },
 	{ PCI_VENDOR_ID_MATROX, 0x534, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_ER },
 	{ PCI_VENDOR_ID_MATROX, 0x536, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EW3 },
 	{ PCI_VENDOR_ID_MATROX, 0x538, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH3 },
 	{0,}
 };

 MODULE_DEVICE_TABLE(pci, mgag200_pciidlist);

 static enum mga_type mgag200_type_from_driver_data(kernel_ulong_t driver_data)
 {
 	return (enum mga_type)(driver_data & MGAG200_TYPE_MASK);
 }

 static unsigned long mgag200_flags_from_driver_data(kernel_ulong_t driver_data)
 {
 	return driver_data & MGAG200_FLAG_MASK;
 }

 static int
 mgag200_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
 	kernel_ulong_t driver_data = ent->driver_data;
 	enum mga_type type = mgag200_type_from_driver_data(driver_data);
 	unsigned long flags = mgag200_flags_from_driver_data(driver_data);
 	struct mga_device *mdev;
 	struct drm_device *dev;
 	int ret;

 	ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &mgag200_driver);
 	if (ret)
 		return ret;

 	ret = pcim_enable_device(pdev);
 	if (ret)
 		return ret;

 	mdev = mgag200_device_create(pdev, type, flags);
 	if (IS_ERR(mdev))
 		return PTR_ERR(mdev);
 	dev = &mdev->base;

 	ret = drm_dev_register(dev, 0);
 	if (ret)
 		return ret;

 	drm_fbdev_generic_setup(dev, 0);

 	return 0;
 }

 static void mgag200_pci_remove(struct pci_dev *pdev)
 {
 	struct drm_device *dev = pci_get_drvdata(pdev);

 	drm_dev_unregister(dev);
 }

 static struct pci_driver mgag200_pci_driver = {
 	.name = DRIVER_NAME,
 	.id_table = mgag200_pciidlist,
 	.probe = mgag200_pci_probe,
 	.remove = mgag200_pci_remove,
 };

 static int __init mgag200_init(void)
 {
 	if (drm_firmware_drivers_only() && mgag200_modeset == -1)
 		return -EINVAL;

 	if (mgag200_modeset == 0)
 		return -EINVAL;

 	return pci_register_driver(&mgag200_pci_driver);
 }

 static void __exit mgag200_exit(void)
 {
 	pci_unregister_driver(&mgag200_pci_driver);
 }

 module_init(mgag200_init);
 module_exit(mgag200_exit);

 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_LICENSE("GPL");
	// SPDX-License-Identifier: GPL-2.0-only
	/*
	* Copyright 2012 Red Hat
	*
	* Authors: Matthew Garrett
	* Dave Airlie
	*/

	#include <linux/module.h>
	#include <linux/pci.h>
	#include <linux/vmalloc.h>

	#include <drm/drm_aperture.h>
	#include <drm/drm_drv.h>
	#include <drm/drm_file.h>
	#include <drm/drm_ioctl.h>
	#include <drm/drm_pciids.h>

	#include "mgag200_drv.h"

	int mgag200_modeset = -1;
	MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
	module_param_named(modeset, mgag200_modeset, int, 0400);

	/*
	* DRM driver
	*/

	DEFINE_DRM_GEM_FOPS(mgag200_driver_fops);

	static const struct drm_driver mgag200_driver = {
	.driver_features = DRIVER_ATOMIC \| DRIVER_GEM \| DRIVER_MODESET,
	.fops = &mgag200_driver_fops,
	.name = DRIVER_NAME,
	.desc = DRIVER_DESC,
	.date = DRIVER_DATE,
	.major = DRIVER_MAJOR,
	.minor = DRIVER_MINOR,
	.patchlevel = DRIVER_PATCHLEVEL,
	DRM_GEM_SHMEM_DRIVER_OPS,
	};

	/*
	* DRM device
	*/

	static bool mgag200_has_sgram(struct mga_device *mdev)
	{
	struct drm_device *dev = &mdev->base;
	struct pci_dev *pdev = to_pci_dev(dev->dev);
	u32 option;
	int ret;

	ret = pci_read_config_dword(pdev, PCI_MGA_OPTION, &option);
	if (drm_WARN(dev, ret, "failed to read PCI config dword: %d\n", ret))
	return false;

	return !!(option & PCI_MGA_OPTION_HARDPWMSK);
	}

	static int mgag200_regs_init(struct mga_device *mdev)
	{
	struct drm_device *dev = &mdev->base;
	struct pci_dev *pdev = to_pci_dev(dev->dev);
	u32 option, option2;
	u8 crtcext3;

	switch (mdev->type) {
	case G200_PCI:
	case G200_AGP:
	if (mgag200_has_sgram(mdev))
	option = 0x4049cd21;
	else
	option = 0x40499121;
	option2 = 0x00008000;
	break;
	case G200_SE_A:
	case G200_SE_B:
	option = 0x40049120;
	if (mgag200_has_sgram(mdev))
	option \|= PCI_MGA_OPTION_HARDPWMSK;
	option2 = 0x00008000;
	break;
	case G200_WB:
	case G200_EW3:
	option = 0x41049120;
	option2 = 0x0000b000;
	break;
	case G200_EV:
	option = 0x00000120;
	option2 = 0x0000b000;
	break;
	case G200_EH:
	case G200_EH3:
	option = 0x00000120;
	option2 = 0x0000b000;
	break;
	default:
	option = 0;
	option2 = 0;
	}

	if (option)
	pci_write_config_dword(pdev, PCI_MGA_OPTION, option);
	if (option2)
	pci_write_config_dword(pdev, PCI_MGA_OPTION2, option2);

	/* BAR 1 contains registers */
	mdev->rmmio_base = pci_resource_start(pdev, 1);
	mdev->rmmio_size = pci_resource_len(pdev, 1);

	if (!devm_request_mem_region(dev->dev, mdev->rmmio_base,
	mdev->rmmio_size, "mgadrmfb_mmio")) {
	drm_err(dev, "can't reserve mmio registers\n");
	return -ENOMEM;
	}

	mdev->rmmio = pcim_iomap(pdev, 1, 0);
	if (mdev->rmmio == NULL)
	return -ENOMEM;

	RREG_ECRT(0x03, crtcext3);
	crtcext3 \|= MGAREG_CRTCEXT3_MGAMODE;
	WREG_ECRT(0x03, crtcext3);

	return 0;
	}

	static void mgag200_g200_interpret_bios(struct mga_device *mdev,
	const unsigned char *bios,
	size_t size)
	{
	static const char matrox[] = {'M', 'A', 'T', 'R', 'O', 'X'};
	static const unsigned int expected_length[6] = {
	0, 64, 64, 64, 128, 128
	};
	struct drm_device *dev = &mdev->base;
	const unsigned char *pins;
	unsigned int pins_len, version;
	int offset;
	int tmp;

	/* Test for MATROX string. */
	if (size < 45 + sizeof(matrox))
	return;
	if (memcmp(&bios[45], matrox, sizeof(matrox)) != 0)
	return;

	/* Get the PInS offset. */
	if (size < MGA_BIOS_OFFSET + 2)
	return;
	offset = (bios[MGA_BIOS_OFFSET + 1] << 8) \| bios[MGA_BIOS_OFFSET];

	/* Get PInS data structure. */

	if (size < offset + 6)
	return;
	pins = bios + offset;
	if (pins[0] == 0x2e && pins[1] == 0x41) {
	version = pins[5];
	pins_len = pins[2];
	} else {
	version = 1;
	pins_len = pins[0] + (pins[1] << 8);
	}

	if (version < 1 \|\| version > 5) {
	drm_warn(dev, "Unknown BIOS PInS version: %d\n", version);
	return;
	}
	if (pins_len != expected_length[version]) {
	drm_warn(dev, "Unexpected BIOS PInS size: %d expected: %d\n",
	pins_len, expected_length[version]);
	return;
	}
	if (size < offset + pins_len)
	return;

	drm_dbg_kms(dev, "MATROX BIOS PInS version %d size: %d found\n",
	version, pins_len);

	/* Extract the clock values */

	switch (version) {
	case 1:
	tmp = pins[24] + (pins[25] << 8);
	if (tmp)
	mdev->model.g200.pclk_max = tmp * 10;
	break;
	case 2:
	if (pins[41] != 0xff)
	mdev->model.g200.pclk_max = (pins[41] + 100) * 1000;
	break;
	case 3:
	if (pins[36] != 0xff)
	mdev->model.g200.pclk_max = (pins[36] + 100) * 1000;
	if (pins[52] & 0x20)
	mdev->model.g200.ref_clk = 14318;
	break;
	case 4:
	if (pins[39] != 0xff)
	mdev->model.g200.pclk_max = pins[39] * 4 * 1000;
	if (pins[92] & 0x01)
	mdev->model.g200.ref_clk = 14318;
	break;
	case 5:
	tmp = pins[4] ? 8000 : 6000;
	if (pins[123] != 0xff)
	mdev->model.g200.pclk_min = pins[123] * tmp;
	if (pins[38] != 0xff)
	mdev->model.g200.pclk_max = pins[38] * tmp;
	if (pins[110] & 0x01)
	mdev->model.g200.ref_clk = 14318;
	break;
	default:
	break;
	}
	}

	static void mgag200_g200_init_refclk(struct mga_device *mdev)
	{
	struct drm_device *dev = &mdev->base;
	struct pci_dev *pdev = to_pci_dev(dev->dev);
	unsigned char __iomem *rom;
	unsigned char *bios;
	size_t size;

	mdev->model.g200.pclk_min = 50000;
	mdev->model.g200.pclk_max = 230000;
	mdev->model.g200.ref_clk = 27050;

	rom = pci_map_rom(pdev, &size);
	if (!rom)
	return;

	bios = vmalloc(size);
	if (!bios)
	goto out;
	memcpy_fromio(bios, rom, size);

	if (size != 0 && bios[0] == 0x55 && bios[1] == 0xaa)
	mgag200_g200_interpret_bios(mdev, bios, size);

	drm_dbg_kms(dev, "pclk_min: %ld pclk_max: %ld ref_clk: %ld\n",
	mdev->model.g200.pclk_min, mdev->model.g200.pclk_max,
	mdev->model.g200.ref_clk);

	vfree(bios);
	out:
	pci_unmap_rom(pdev, rom);
	}

	static void mgag200_g200se_init_unique_id(struct mga_device *mdev)
	{
	struct drm_device *dev = &mdev->base;

	/* stash G200 SE model number for later use */
	mdev->model.g200se.unique_rev_id = RREG32(0x1e24);

	drm_dbg(dev, "G200 SE unique revision id is 0x%x\n",
	mdev->model.g200se.unique_rev_id);
	}

	static struct mga_device *
	mgag200_device_create(struct pci_dev *pdev, enum mga_type type, unsigned long flags)
	{
	struct mga_device *mdev;
	struct drm_device *dev;
	int ret;

	mdev = devm_drm_dev_alloc(&pdev->dev, &mgag200_driver, struct mga_device, base);
	if (IS_ERR(mdev))
	return mdev;
	dev = &mdev->base;

	pci_set_drvdata(pdev, dev);

	mdev->flags = flags;
	mdev->type = type;

	ret = mgag200_regs_init(mdev);
	if (ret)
	return ERR_PTR(ret);

	if (mdev->type == G200_PCI \|\| mdev->type == G200_AGP)
	mgag200_g200_init_refclk(mdev);
	else if (IS_G200_SE(mdev))
	mgag200_g200se_init_unique_id(mdev);

	ret = mgag200_mm_init(mdev);
	if (ret)
	return ERR_PTR(ret);

	ret = mgag200_modeset_init(mdev);
	if (ret)
	return ERR_PTR(ret);

	return mdev;
	}

	/*
	* PCI driver
	*/

	static const struct pci_device_id mgag200_pciidlist[] = {
	{ PCI_VENDOR_ID_MATROX, 0x520, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_PCI },
	{ PCI_VENDOR_ID_MATROX, 0x521, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_AGP },
	{ PCI_VENDOR_ID_MATROX, 0x522, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
	G200_SE_A \| MGAG200_FLAG_HW_BUG_NO_STARTADD},
	{ PCI_VENDOR_ID_MATROX, 0x524, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_B },
	{ PCI_VENDOR_ID_MATROX, 0x530, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EV },
	{ PCI_VENDOR_ID_MATROX, 0x532, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_WB },
	{ PCI_VENDOR_ID_MATROX, 0x533, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH },
	{ PCI_VENDOR_ID_MATROX, 0x534, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_ER },
	{ PCI_VENDOR_ID_MATROX, 0x536, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EW3 },
	{ PCI_VENDOR_ID_MATROX, 0x538, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH3 },
	{0,}
	};

	MODULE_DEVICE_TABLE(pci, mgag200_pciidlist);

	static enum mga_type mgag200_type_from_driver_data(kernel_ulong_t driver_data)
	{
	return (enum mga_type)(driver_data & MGAG200_TYPE_MASK);
	}

	static unsigned long mgag200_flags_from_driver_data(kernel_ulong_t driver_data)
	{
	return driver_data & MGAG200_FLAG_MASK;
	}

	static int
	mgag200_pci_probe(struct pci_dev pdev, const struct pci_device_id ent)
	{
	kernel_ulong_t driver_data = ent->driver_data;
	enum mga_type type = mgag200_type_from_driver_data(driver_data);
	unsigned long flags = mgag200_flags_from_driver_data(driver_data);
	struct mga_device *mdev;
	struct drm_device *dev;
	int ret;

	ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &mgag200_driver);
	if (ret)
	return ret;

	ret = pcim_enable_device(pdev);
	if (ret)
	return ret;

	mdev = mgag200_device_create(pdev, type, flags);
	if (IS_ERR(mdev))
	return PTR_ERR(mdev);
	dev = &mdev->base;

	ret = drm_dev_register(dev, 0);
	if (ret)
	return ret;

	drm_fbdev_generic_setup(dev, 0);

	return 0;
	}

	static void mgag200_pci_remove(struct pci_dev *pdev)
	{
	struct drm_device *dev = pci_get_drvdata(pdev);

	drm_dev_unregister(dev);
	}

	static struct pci_driver mgag200_pci_driver = {
	.name = DRIVER_NAME,
	.id_table = mgag200_pciidlist,
	.probe = mgag200_pci_probe,
	.remove = mgag200_pci_remove,
	};

	static int __init mgag200_init(void)
	{
	if (drm_firmware_drivers_only() && mgag200_modeset == -1)
	return -EINVAL;

	if (mgag200_modeset == 0)
	return -EINVAL;

	return pci_register_driver(&mgag200_pci_driver);
	}

	static void __exit mgag200_exit(void)
	{
	pci_unregister_driver(&mgag200_pci_driver);
	}

	module_init(mgag200_init);
	module_exit(mgag200_exit);

	MODULE_AUTHOR(DRIVER_AUTHOR);
	MODULE_DESCRIPTION(DRIVER_DESC);
	MODULE_LICENSE("GPL");