1/*
  2 * Copyright 2012 Red Hat <mjg@redhat.com>
  3 *
  4 * This file is subject to the terms and conditions of the GNU General
  5 * Public License version 2. See the file COPYING in the main
  6 * directory of this archive for more details.
  7 *
  8 * Authors: Matthew Garrett
  9 *          Dave Airlie
 10 */
 11#include <linux/module.h>
 12#include <linux/console.h>
 13#include "drmP.h"
 14#include "drm.h"
 15
 16#include "cirrus_drv.h"
 17
 18int cirrus_modeset = -1;
 19
 20MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
 21module_param_named(modeset, cirrus_modeset, int, 0400);
 22
 23/*
 24 * This is the generic driver code. This binds the driver to the drm core,
 25 * which then performs further device association and calls our graphics init
 26 * functions
 27 */
 28
 29static struct drm_driver driver;
 30
 31/* only bind to the cirrus chip in qemu */
 32static DEFINE_PCI_DEVICE_TABLE(pciidlist) = {
 33	{ PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446, 0x1af4, 0x1100, 0,
 34	  0, 0 },
 35	{0,}
 36};
 37
 38
 39static void cirrus_kick_out_firmware_fb(struct pci_dev *pdev)
 40{
 41	struct apertures_struct *ap;
 42	bool primary = false;
 43
 44	ap = alloc_apertures(1);
 45	ap->ranges[0].base = pci_resource_start(pdev, 0);
 46	ap->ranges[0].size = pci_resource_len(pdev, 0);
 47
 48#ifdef CONFIG_X86
 49	primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
 50#endif
 51	remove_conflicting_framebuffers(ap, "cirrusdrmfb", primary);
 52	kfree(ap);
 53}
 54
 55static int __devinit
 56cirrus_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 57{
 58	cirrus_kick_out_firmware_fb(pdev);
 59
 60	return drm_get_pci_dev(pdev, ent, &driver);
 61}
 62
 63static void cirrus_pci_remove(struct pci_dev *pdev)
 64{
 65	struct drm_device *dev = pci_get_drvdata(pdev);
 66
 67	drm_put_dev(dev);
 68}
 69
 70static const struct file_operations cirrus_driver_fops = {
 71	.owner = THIS_MODULE,
 72	.open = drm_open,
 73	.release = drm_release,
 74	.unlocked_ioctl = drm_ioctl,
 75	.mmap = cirrus_mmap,
 76	.poll = drm_poll,
 77	.fasync = drm_fasync,
 78};
 79static struct drm_driver driver = {
 80	.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_USE_MTRR,
 81	.load = cirrus_driver_load,
 82	.unload = cirrus_driver_unload,
 83	.fops = &cirrus_driver_fops,
 84	.name = DRIVER_NAME,
 85	.desc = DRIVER_DESC,
 86	.date = DRIVER_DATE,
 87	.major = DRIVER_MAJOR,
 88	.minor = DRIVER_MINOR,
 89	.patchlevel = DRIVER_PATCHLEVEL,
 90	.gem_init_object = cirrus_gem_init_object,
 91	.gem_free_object = cirrus_gem_free_object,
 92	.dumb_create = cirrus_dumb_create,
 93	.dumb_map_offset = cirrus_dumb_mmap_offset,
 94	.dumb_destroy = cirrus_dumb_destroy,
 95};
 96
 97static struct pci_driver cirrus_pci_driver = {
 98	.name = DRIVER_NAME,
 99	.id_table = pciidlist,
100	.probe = cirrus_pci_probe,
101	.remove = cirrus_pci_remove,
102};
103
104static int __init cirrus_init(void)
105{
106#ifdef CONFIG_VGA_CONSOLE
107	if (vgacon_text_force() && cirrus_modeset == -1)
108		return -EINVAL;
109#endif
110
111	if (cirrus_modeset == 0)
112		return -EINVAL;
113	return drm_pci_init(&driver, &cirrus_pci_driver);
114}
115
116static void __exit cirrus_exit(void)
117{
118	drm_pci_exit(&driver, &cirrus_pci_driver);
119}
120
121module_init(cirrus_init);
122module_exit(cirrus_exit);
123
124MODULE_DEVICE_TABLE(pci, pciidlist);
125MODULE_AUTHOR(DRIVER_AUTHOR);
126MODULE_DESCRIPTION(DRIVER_DESC);
127MODULE_LICENSE("GPL");