1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright 2012 Red Hat 4 * 5 * Authors: Matthew Garrett 6 * Dave Airlie 7 */ 8 9 #include <linux/module.h> 10 #include <linux/console.h> 11 12 #include <drm/drm_drv.h> 13 #include <drm/drm_file.h> 14 #include <drm/drm_ioctl.h> 15 #include <drm/drm_pci.h> 16 #include <drm/drm_pciids.h> 17 18 #include "mgag200_drv.h" 19 20 /* 21 * This is the generic driver code. This binds the driver to the drm core, 22 * which then performs further device association and calls our graphics init 23 * functions 24 */ 25 int mgag200_modeset = -1; 26 27 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting"); 28 module_param_named(modeset, mgag200_modeset, int, 0400); 29 30 static struct drm_driver driver; 31 32 static const struct pci_device_id pciidlist[] = { 33 { PCI_VENDOR_ID_MATROX, 0x522, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 34 G200_SE_A | MGAG200_FLAG_HW_BUG_NO_STARTADD}, 35 { PCI_VENDOR_ID_MATROX, 0x524, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_B }, 36 { PCI_VENDOR_ID_MATROX, 0x530, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EV }, 37 { PCI_VENDOR_ID_MATROX, 0x532, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_WB }, 38 { PCI_VENDOR_ID_MATROX, 0x533, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH }, 39 { PCI_VENDOR_ID_MATROX, 0x534, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_ER }, 40 { PCI_VENDOR_ID_MATROX, 0x536, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EW3 }, 41 { PCI_VENDOR_ID_MATROX, 0x538, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH3 }, 42 {0,} 43 }; 44 45 MODULE_DEVICE_TABLE(pci, pciidlist); 46 47 48 static int mga_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 49 { 50 drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "mgag200drmfb"); 51 52 return drm_get_pci_dev(pdev, ent, &driver); 53 } 54 55 static void mga_pci_remove(struct pci_dev *pdev) 56 { 57 struct drm_device *dev = pci_get_drvdata(pdev); 58 59 drm_put_dev(dev); 60 } 61 62 DEFINE_DRM_GEM_FOPS(mgag200_driver_fops); 63 64 static bool mgag200_pin_bo_at_0(const struct mga_device *mdev) 65 { 66 return mdev->flags & MGAG200_FLAG_HW_BUG_NO_STARTADD; 67 } 68 69 int mgag200_driver_dumb_create(struct drm_file *file, 70 struct drm_device *dev, 71 struct drm_mode_create_dumb *args) 72 { 73 struct mga_device *mdev = dev->dev_private; 74 unsigned long pg_align; 75 76 if (WARN_ONCE(!dev->vram_mm, "VRAM MM not initialized")) 77 return -EINVAL; 78 79 pg_align = 0ul; 80 81 /* 82 * Aligning scanout buffers to the size of the video ram forces 83 * placement at offset 0. Works around a bug where HW does not 84 * respect 'startadd' field. 85 */ 86 if (mgag200_pin_bo_at_0(mdev)) 87 pg_align = PFN_UP(mdev->mc.vram_size); 88 89 return drm_gem_vram_fill_create_dumb(file, dev, &dev->vram_mm->bdev, 90 pg_align, false, args); 91 } 92 93 static struct drm_driver driver = { 94 .driver_features = DRIVER_GEM | DRIVER_MODESET, 95 .load = mgag200_driver_load, 96 .unload = mgag200_driver_unload, 97 .fops = &mgag200_driver_fops, 98 .name = DRIVER_NAME, 99 .desc = DRIVER_DESC, 100 .date = DRIVER_DATE, 101 .major = DRIVER_MAJOR, 102 .minor = DRIVER_MINOR, 103 .patchlevel = DRIVER_PATCHLEVEL, 104 .debugfs_init = drm_vram_mm_debugfs_init, 105 .dumb_create = mgag200_driver_dumb_create, 106 .dumb_map_offset = drm_gem_vram_driver_dumb_mmap_offset, 107 .gem_prime_mmap = drm_gem_prime_mmap, 108 }; 109 110 static struct pci_driver mgag200_pci_driver = { 111 .name = DRIVER_NAME, 112 .id_table = pciidlist, 113 .probe = mga_pci_probe, 114 .remove = mga_pci_remove, 115 }; 116 117 static int __init mgag200_init(void) 118 { 119 if (vgacon_text_force() && mgag200_modeset == -1) 120 return -EINVAL; 121 122 if (mgag200_modeset == 0) 123 return -EINVAL; 124 125 return pci_register_driver(&mgag200_pci_driver); 126 } 127 128 static void __exit mgag200_exit(void) 129 { 130 pci_unregister_driver(&mgag200_pci_driver); 131 } 132 133 module_init(mgag200_init); 134 module_exit(mgag200_exit); 135 136 MODULE_AUTHOR(DRIVER_AUTHOR); 137 MODULE_DESCRIPTION(DRIVER_DESC); 138 MODULE_LICENSE("GPL"); 139