1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright 2012 Red Hat
5 * Authors: Matthew Garrett
9 #include <linux/console.h>
10 #include <linux/module.h>
11 #include <linux/pci.h>
13 #include <drm/drm_drv.h>
14 #include <drm/drm_file.h>
15 #include <drm/drm_ioctl.h>
16 #include <drm/drm_pciids.h>
18 #include "mgag200_drv.h"
20 int mgag200_modeset = -1;
21 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
22 module_param_named(modeset, mgag200_modeset, int, 0400);
28 DEFINE_DRM_GEM_FOPS(mgag200_driver_fops);
30 static struct drm_driver mgag200_driver = {
31 .driver_features = DRIVER_ATOMIC | DRIVER_GEM | DRIVER_MODESET,
32 .fops = &mgag200_driver_fops,
36 .major = DRIVER_MAJOR,
37 .minor = DRIVER_MINOR,
38 .patchlevel = DRIVER_PATCHLEVEL,
39 .gem_create_object = drm_gem_shmem_create_object_cached,
40 DRM_GEM_SHMEM_DRIVER_OPS,
47 static bool mgag200_has_sgram(struct mga_device *mdev)
49 struct drm_device *dev = &mdev->base;
53 ret = pci_read_config_dword(dev->pdev, PCI_MGA_OPTION, &option);
54 if (drm_WARN(dev, ret, "failed to read PCI config dword: %d\n", ret))
57 return !!(option & PCI_MGA_OPTION_HARDPWMSK);
60 static int mgag200_regs_init(struct mga_device *mdev)
62 struct drm_device *dev = &mdev->base;
69 if (mgag200_has_sgram(mdev))
70 option |= PCI_MGA_OPTION_HARDPWMSK;
93 pci_write_config_dword(dev->pdev, PCI_MGA_OPTION, option);
95 pci_write_config_dword(dev->pdev, PCI_MGA_OPTION2, option2);
97 /* BAR 1 contains registers */
98 mdev->rmmio_base = pci_resource_start(dev->pdev, 1);
99 mdev->rmmio_size = pci_resource_len(dev->pdev, 1);
101 if (!devm_request_mem_region(dev->dev, mdev->rmmio_base,
102 mdev->rmmio_size, "mgadrmfb_mmio")) {
103 drm_err(dev, "can't reserve mmio registers\n");
107 mdev->rmmio = pcim_iomap(dev->pdev, 1, 0);
108 if (mdev->rmmio == NULL)
111 RREG_ECRT(0x03, crtcext3);
112 crtcext3 |= MGAREG_CRTCEXT3_MGAMODE;
113 WREG_ECRT(0x03, crtcext3);
118 static int mgag200_device_init(struct mga_device *mdev, unsigned long flags)
120 struct drm_device *dev = &mdev->base;
123 mdev->flags = mgag200_flags_from_driver_data(flags);
124 mdev->type = mgag200_type_from_driver_data(flags);
126 ret = mgag200_regs_init(mdev);
130 /* stash G200 SE model number for later use */
131 if (IS_G200_SE(mdev)) {
132 mdev->unique_rev_id = RREG32(0x1e24);
133 drm_dbg(dev, "G200 SE unique revision id is 0x%x\n",
134 mdev->unique_rev_id);
137 ret = mgag200_mm_init(mdev);
141 ret = mgag200_modeset_init(mdev);
143 drm_err(dev, "Fatal error during modeset init: %d\n", ret);
150 static struct mga_device *
151 mgag200_device_create(struct pci_dev *pdev, unsigned long flags)
153 struct drm_device *dev;
154 struct mga_device *mdev;
157 mdev = devm_drm_dev_alloc(&pdev->dev, &mgag200_driver,
158 struct mga_device, base);
164 pci_set_drvdata(pdev, dev);
166 ret = mgag200_device_init(mdev, flags);
177 static const struct pci_device_id mgag200_pciidlist[] = {
178 { PCI_VENDOR_ID_MATROX, 0x522, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
179 G200_SE_A | MGAG200_FLAG_HW_BUG_NO_STARTADD},
180 { PCI_VENDOR_ID_MATROX, 0x524, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_B },
181 { PCI_VENDOR_ID_MATROX, 0x530, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EV },
182 { PCI_VENDOR_ID_MATROX, 0x532, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_WB },
183 { PCI_VENDOR_ID_MATROX, 0x533, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH },
184 { PCI_VENDOR_ID_MATROX, 0x534, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_ER },
185 { PCI_VENDOR_ID_MATROX, 0x536, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EW3 },
186 { PCI_VENDOR_ID_MATROX, 0x538, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH3 },
190 MODULE_DEVICE_TABLE(pci, mgag200_pciidlist);
193 mgag200_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
195 struct mga_device *mdev;
196 struct drm_device *dev;
199 drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "mgag200drmfb");
201 ret = pcim_enable_device(pdev);
205 mdev = mgag200_device_create(pdev, ent->driver_data);
207 return PTR_ERR(mdev);
210 ret = drm_dev_register(dev, ent->driver_data);
214 drm_fbdev_generic_setup(dev, 0);
219 static void mgag200_pci_remove(struct pci_dev *pdev)
221 struct drm_device *dev = pci_get_drvdata(pdev);
223 drm_dev_unregister(dev);
226 static struct pci_driver mgag200_pci_driver = {
228 .id_table = mgag200_pciidlist,
229 .probe = mgag200_pci_probe,
230 .remove = mgag200_pci_remove,
233 static int __init mgag200_init(void)
235 if (vgacon_text_force() && mgag200_modeset == -1)
238 if (mgag200_modeset == 0)
241 return pci_register_driver(&mgag200_pci_driver);
244 static void __exit mgag200_exit(void)
246 pci_unregister_driver(&mgag200_pci_driver);
249 module_init(mgag200_init);
250 module_exit(mgag200_exit);
252 MODULE_AUTHOR(DRIVER_AUTHOR);
253 MODULE_DESCRIPTION(DRIVER_DESC);
254 MODULE_LICENSE("GPL");