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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 */
25int mgag200_modeset = -1;
26
27MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
28module_param_named(modeset, mgag200_modeset, int, 0400);
29
30static struct drm_driver driver;
31
32static const struct pci_device_id pciidlist[] = {
33 { PCI_VENDOR_ID_MATROX, 0x522, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_A },
34 { PCI_VENDOR_ID_MATROX, 0x524, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_B },
35 { PCI_VENDOR_ID_MATROX, 0x530, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EV },
36 { PCI_VENDOR_ID_MATROX, 0x532, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_WB },
37 { PCI_VENDOR_ID_MATROX, 0x533, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH },
38 { PCI_VENDOR_ID_MATROX, 0x534, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_ER },
39 { PCI_VENDOR_ID_MATROX, 0x536, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EW3 },
40 { PCI_VENDOR_ID_MATROX, 0x538, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH3 },
41 {0,}
42};
43
44MODULE_DEVICE_TABLE(pci, pciidlist);
45
46
47static int mga_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
48{
49 drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, 0, "mgag200drmfb");
50
51 return drm_get_pci_dev(pdev, ent, &driver);
52}
53
54static void mga_pci_remove(struct pci_dev *pdev)
55{
56 struct drm_device *dev = pci_get_drvdata(pdev);
57
58 drm_put_dev(dev);
59}
60
61static const struct file_operations mgag200_driver_fops = {
62 .owner = THIS_MODULE,
63 DRM_VRAM_MM_FILE_OPERATIONS
64};
65
66static struct drm_driver driver = {
67 .driver_features = DRIVER_GEM | DRIVER_MODESET,
68 .load = mgag200_driver_load,
69 .unload = mgag200_driver_unload,
70 .fops = &mgag200_driver_fops,
71 .name = DRIVER_NAME,
72 .desc = DRIVER_DESC,
73 .date = DRIVER_DATE,
74 .major = DRIVER_MAJOR,
75 .minor = DRIVER_MINOR,
76 .patchlevel = DRIVER_PATCHLEVEL,
77 DRM_GEM_VRAM_DRIVER
78};
79
80static struct pci_driver mgag200_pci_driver = {
81 .name = DRIVER_NAME,
82 .id_table = pciidlist,
83 .probe = mga_pci_probe,
84 .remove = mga_pci_remove,
85};
86
87static int __init mgag200_init(void)
88{
89 if (vgacon_text_force() && mgag200_modeset == -1)
90 return -EINVAL;
91
92 if (mgag200_modeset == 0)
93 return -EINVAL;
94
95 return pci_register_driver(&mgag200_pci_driver);
96}
97
98static void __exit mgag200_exit(void)
99{
100 pci_unregister_driver(&mgag200_pci_driver);
101}
102
103module_init(mgag200_init);
104module_exit(mgag200_exit);
105
106MODULE_AUTHOR(DRIVER_AUTHOR);
107MODULE_DESCRIPTION(DRIVER_DESC);
108MODULE_LICENSE("GPL");
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/pci.h>
11
12#include <drm/drm_aperture.h>
13#include <drm/drm_atomic_helper.h>
14#include <drm/drm_drv.h>
15#include <drm/drm_fbdev_generic.h>
16#include <drm/drm_file.h>
17#include <drm/drm_ioctl.h>
18#include <drm/drm_managed.h>
19#include <drm/drm_module.h>
20#include <drm/drm_pciids.h>
21
22#include "mgag200_drv.h"
23
24static int mgag200_modeset = -1;
25MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
26module_param_named(modeset, mgag200_modeset, int, 0400);
27
28int mgag200_init_pci_options(struct pci_dev *pdev, u32 option, u32 option2)
29{
30 struct device *dev = &pdev->dev;
31 int err;
32
33 err = pci_write_config_dword(pdev, PCI_MGA_OPTION, option);
34 if (err != PCIBIOS_SUCCESSFUL) {
35 dev_err(dev, "pci_write_config_dword(PCI_MGA_OPTION) failed: %d\n", err);
36 return pcibios_err_to_errno(err);
37 }
38
39 err = pci_write_config_dword(pdev, PCI_MGA_OPTION2, option2);
40 if (err != PCIBIOS_SUCCESSFUL) {
41 dev_err(dev, "pci_write_config_dword(PCI_MGA_OPTION2) failed: %d\n", err);
42 return pcibios_err_to_errno(err);
43 }
44
45 return 0;
46}
47
48resource_size_t mgag200_probe_vram(void __iomem *mem, resource_size_t size)
49{
50 int offset;
51 int orig;
52 int test1, test2;
53 int orig1, orig2;
54 size_t vram_size;
55
56 /* Probe */
57 orig = ioread16(mem);
58 iowrite16(0, mem);
59
60 vram_size = size;
61
62 for (offset = 0x100000; offset < vram_size; offset += 0x4000) {
63 orig1 = ioread8(mem + offset);
64 orig2 = ioread8(mem + offset + 0x100);
65
66 iowrite16(0xaa55, mem + offset);
67 iowrite16(0xaa55, mem + offset + 0x100);
68
69 test1 = ioread16(mem + offset);
70 test2 = ioread16(mem);
71
72 iowrite16(orig1, mem + offset);
73 iowrite16(orig2, mem + offset + 0x100);
74
75 if (test1 != 0xaa55)
76 break;
77
78 if (test2)
79 break;
80 }
81
82 iowrite16(orig, mem);
83
84 return offset - 65536;
85}
86
87#if defined(CONFIG_DRM_MGAG200_IOBURST_WORKAROUND)
88static struct drm_gem_object *mgag200_create_object(struct drm_device *dev, size_t size)
89{
90 struct drm_gem_shmem_object *shmem;
91
92 shmem = kzalloc(sizeof(*shmem), GFP_KERNEL);
93 if (!shmem)
94 return NULL;
95
96 shmem->map_wc = true;
97 return &shmem->base;
98}
99#endif
100
101/*
102 * DRM driver
103 */
104
105DEFINE_DRM_GEM_FOPS(mgag200_driver_fops);
106
107static const struct drm_driver mgag200_driver = {
108 .driver_features = DRIVER_ATOMIC | DRIVER_GEM | DRIVER_MODESET,
109 .fops = &mgag200_driver_fops,
110 .name = DRIVER_NAME,
111 .desc = DRIVER_DESC,
112 .date = DRIVER_DATE,
113 .major = DRIVER_MAJOR,
114 .minor = DRIVER_MINOR,
115 .patchlevel = DRIVER_PATCHLEVEL,
116#if defined(CONFIG_DRM_MGAG200_IOBURST_WORKAROUND)
117 .gem_create_object = mgag200_create_object,
118#endif
119 DRM_GEM_SHMEM_DRIVER_OPS,
120};
121
122/*
123 * DRM device
124 */
125
126resource_size_t mgag200_device_probe_vram(struct mga_device *mdev)
127{
128 return mgag200_probe_vram(mdev->vram, resource_size(mdev->vram_res));
129}
130
131int mgag200_device_preinit(struct mga_device *mdev)
132{
133 struct drm_device *dev = &mdev->base;
134 struct pci_dev *pdev = to_pci_dev(dev->dev);
135 resource_size_t start, len;
136 struct resource *res;
137
138 /* BAR 1 contains registers */
139
140 start = pci_resource_start(pdev, 1);
141 len = pci_resource_len(pdev, 1);
142
143 res = devm_request_mem_region(dev->dev, start, len, "mgadrmfb_mmio");
144 if (!res) {
145 drm_err(dev, "devm_request_mem_region(MMIO) failed\n");
146 return -ENXIO;
147 }
148 mdev->rmmio_res = res;
149
150 mdev->rmmio = pcim_iomap(pdev, 1, 0);
151 if (!mdev->rmmio)
152 return -ENOMEM;
153
154 /* BAR 0 is VRAM */
155
156 start = pci_resource_start(pdev, 0);
157 len = pci_resource_len(pdev, 0);
158
159 res = devm_request_mem_region(dev->dev, start, len, "mgadrmfb_vram");
160 if (!res) {
161 drm_err(dev, "devm_request_mem_region(VRAM) failed\n");
162 return -ENXIO;
163 }
164 mdev->vram_res = res;
165
166 mdev->vram = devm_ioremap_wc(dev->dev, res->start, resource_size(res));
167 if (!mdev->vram)
168 return -ENOMEM;
169
170 /* Don't fail on errors, but performance might be reduced. */
171 devm_arch_phys_wc_add(dev->dev, res->start, resource_size(res));
172
173 return 0;
174}
175
176int mgag200_device_init(struct mga_device *mdev,
177 const struct mgag200_device_info *info,
178 const struct mgag200_device_funcs *funcs)
179{
180 struct drm_device *dev = &mdev->base;
181 u8 crtcext3, misc;
182 int ret;
183
184 mdev->info = info;
185 mdev->funcs = funcs;
186
187 ret = drmm_mutex_init(dev, &mdev->rmmio_lock);
188 if (ret)
189 return ret;
190
191 mutex_lock(&mdev->rmmio_lock);
192
193 RREG_ECRT(0x03, crtcext3);
194 crtcext3 |= MGAREG_CRTCEXT3_MGAMODE;
195 WREG_ECRT(0x03, crtcext3);
196
197 WREG_ECRT(0x04, 0x00);
198
199 misc = RREG8(MGA_MISC_IN);
200 misc |= MGAREG_MISC_RAMMAPEN |
201 MGAREG_MISC_HIGH_PG_SEL;
202 WREG8(MGA_MISC_OUT, misc);
203
204 mutex_unlock(&mdev->rmmio_lock);
205
206 return 0;
207}
208
209/*
210 * PCI driver
211 */
212
213static const struct pci_device_id mgag200_pciidlist[] = {
214 { PCI_VENDOR_ID_MATROX, 0x520, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_PCI },
215 { PCI_VENDOR_ID_MATROX, 0x521, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_AGP },
216 { PCI_VENDOR_ID_MATROX, 0x522, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_A },
217 { PCI_VENDOR_ID_MATROX, 0x524, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_B },
218 { PCI_VENDOR_ID_MATROX, 0x530, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EV },
219 { PCI_VENDOR_ID_MATROX, 0x532, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_WB },
220 { PCI_VENDOR_ID_MATROX, 0x533, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH },
221 { PCI_VENDOR_ID_MATROX, 0x534, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_ER },
222 { PCI_VENDOR_ID_MATROX, 0x536, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EW3 },
223 { PCI_VENDOR_ID_MATROX, 0x538, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH3 },
224 {0,}
225};
226
227MODULE_DEVICE_TABLE(pci, mgag200_pciidlist);
228
229static int
230mgag200_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
231{
232 enum mga_type type = (enum mga_type)ent->driver_data;
233 struct mga_device *mdev;
234 struct drm_device *dev;
235 int ret;
236
237 ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &mgag200_driver);
238 if (ret)
239 return ret;
240
241 ret = pcim_enable_device(pdev);
242 if (ret)
243 return ret;
244
245 switch (type) {
246 case G200_PCI:
247 case G200_AGP:
248 mdev = mgag200_g200_device_create(pdev, &mgag200_driver);
249 break;
250 case G200_SE_A:
251 case G200_SE_B:
252 mdev = mgag200_g200se_device_create(pdev, &mgag200_driver, type);
253 break;
254 case G200_WB:
255 mdev = mgag200_g200wb_device_create(pdev, &mgag200_driver);
256 break;
257 case G200_EV:
258 mdev = mgag200_g200ev_device_create(pdev, &mgag200_driver);
259 break;
260 case G200_EH:
261 mdev = mgag200_g200eh_device_create(pdev, &mgag200_driver);
262 break;
263 case G200_EH3:
264 mdev = mgag200_g200eh3_device_create(pdev, &mgag200_driver);
265 break;
266 case G200_ER:
267 mdev = mgag200_g200er_device_create(pdev, &mgag200_driver);
268 break;
269 case G200_EW3:
270 mdev = mgag200_g200ew3_device_create(pdev, &mgag200_driver);
271 break;
272 default:
273 dev_err(&pdev->dev, "Device type %d is unsupported\n", type);
274 return -ENODEV;
275 }
276 if (IS_ERR(mdev))
277 return PTR_ERR(mdev);
278 dev = &mdev->base;
279
280 ret = drm_dev_register(dev, 0);
281 if (ret)
282 return ret;
283
284 /*
285 * FIXME: A 24-bit color depth does not work with 24 bpp on
286 * G200ER. Force 32 bpp.
287 */
288 drm_fbdev_generic_setup(dev, 32);
289
290 return 0;
291}
292
293static void mgag200_pci_remove(struct pci_dev *pdev)
294{
295 struct drm_device *dev = pci_get_drvdata(pdev);
296
297 drm_dev_unregister(dev);
298 drm_atomic_helper_shutdown(dev);
299}
300
301static void mgag200_pci_shutdown(struct pci_dev *pdev)
302{
303 drm_atomic_helper_shutdown(pci_get_drvdata(pdev));
304}
305
306static struct pci_driver mgag200_pci_driver = {
307 .name = DRIVER_NAME,
308 .id_table = mgag200_pciidlist,
309 .probe = mgag200_pci_probe,
310 .remove = mgag200_pci_remove,
311 .shutdown = mgag200_pci_shutdown,
312};
313
314drm_module_pci_driver_if_modeset(mgag200_pci_driver, mgag200_modeset);
315
316MODULE_AUTHOR(DRIVER_AUTHOR);
317MODULE_DESCRIPTION(DRIVER_DESC);
318MODULE_LICENSE("GPL");