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_VENDOR_ID_SUN, 0x4852, 0, 0, 34 G200_SE_A | MGAG200_FLAG_HW_BUG_NO_STARTADD}, 35 { PCI_VENDOR_ID_MATROX, 0x522, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_A }, 36 { PCI_VENDOR_ID_MATROX, 0x524, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_B }, 37 { PCI_VENDOR_ID_MATROX, 0x530, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EV }, 38 { PCI_VENDOR_ID_MATROX, 0x532, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_WB }, 39 { PCI_VENDOR_ID_MATROX, 0x533, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH }, 40 { PCI_VENDOR_ID_MATROX, 0x534, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_ER }, 41 { PCI_VENDOR_ID_MATROX, 0x536, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EW3 }, 42 { PCI_VENDOR_ID_MATROX, 0x538, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH3 }, 43 {0,} 44 }; 45 46 MODULE_DEVICE_TABLE(pci, pciidlist); 47 48 49 static int mga_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 50 { 51 drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "mgag200drmfb"); 52 53 return drm_get_pci_dev(pdev, ent, &driver); 54 } 55 56 static void mga_pci_remove(struct pci_dev *pdev) 57 { 58 struct drm_device *dev = pci_get_drvdata(pdev); 59 60 drm_put_dev(dev); 61 } 62 63 DEFINE_DRM_GEM_FOPS(mgag200_driver_fops); 64 65 static bool mgag200_pin_bo_at_0(const struct mga_device *mdev) 66 { 67 return mdev->flags & MGAG200_FLAG_HW_BUG_NO_STARTADD; 68 } 69 70 int mgag200_driver_dumb_create(struct drm_file *file, 71 struct drm_device *dev, 72 struct drm_mode_create_dumb *args) 73 { 74 struct mga_device *mdev = dev->dev_private; 75 unsigned long pg_align; 76 77 if (WARN_ONCE(!dev->vram_mm, "VRAM MM not initialized")) 78 return -EINVAL; 79 80 pg_align = 0ul; 81 82 /* 83 * Aligning scanout buffers to the size of the video ram forces 84 * placement at offset 0. Works around a bug where HW does not 85 * respect 'startadd' field. 86 */ 87 if (mgag200_pin_bo_at_0(mdev)) 88 pg_align = PFN_UP(mdev->mc.vram_size); 89 90 return drm_gem_vram_fill_create_dumb(file, dev, &dev->vram_mm->bdev, 91 pg_align, false, args); 92 } 93 94 static struct drm_driver driver = { 95 .driver_features = DRIVER_GEM | DRIVER_MODESET, 96 .load = mgag200_driver_load, 97 .unload = mgag200_driver_unload, 98 .fops = &mgag200_driver_fops, 99 .name = DRIVER_NAME, 100 .desc = DRIVER_DESC, 101 .date = DRIVER_DATE, 102 .major = DRIVER_MAJOR, 103 .minor = DRIVER_MINOR, 104 .patchlevel = DRIVER_PATCHLEVEL, 105 .debugfs_init = drm_vram_mm_debugfs_init, 106 .dumb_create = mgag200_driver_dumb_create, 107 .dumb_map_offset = drm_gem_vram_driver_dumb_mmap_offset, 108 .gem_prime_mmap = drm_gem_prime_mmap, 109 }; 110 111 static struct pci_driver mgag200_pci_driver = { 112 .name = DRIVER_NAME, 113 .id_table = pciidlist, 114 .probe = mga_pci_probe, 115 .remove = mga_pci_remove, 116 }; 117 118 static int __init mgag200_init(void) 119 { 120 if (vgacon_text_force() && mgag200_modeset == -1) 121 return -EINVAL; 122 123 if (mgag200_modeset == 0) 124 return -EINVAL; 125 126 return pci_register_driver(&mgag200_pci_driver); 127 } 128 129 static void __exit mgag200_exit(void) 130 { 131 pci_unregister_driver(&mgag200_pci_driver); 132 } 133 134 module_init(mgag200_init); 135 module_exit(mgag200_exit); 136 137 MODULE_AUTHOR(DRIVER_AUTHOR); 138 MODULE_DESCRIPTION(DRIVER_DESC); 139 MODULE_LICENSE("GPL"); 140