1 /* qxl_drv.c -- QXL driver -*- linux-c -*-
2 *
3 * Copyright 2011 Red Hat, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
15 * Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
24 *
25 * Authors:
26 * Dave Airlie <airlie@redhat.com>
27 * Alon Levy <alevy@redhat.com>
28 */
29
30 #include "qxl_drv.h"
31
32 #include <linux/console.h>
33 #include <linux/module.h>
34 #include <linux/pci.h>
35 #include <linux/vgaarb.h>
36
37 #include <drm/drm.h>
38 #include <drm/drm_aperture.h>
39 #include <drm/drm_atomic_helper.h>
40 #include <drm/drm_drv.h>
41 #include <drm/drm_file.h>
42 #include <drm/drm_gem_ttm_helper.h>
43 #include <drm/drm_modeset_helper.h>
44 #include <drm/drm_prime.h>
45 #include <drm/drm_probe_helper.h>
46
47 #include "qxl_object.h"
48
49 static const struct pci_device_id pciidlist[] = {
50 { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8,
51 0xffff00, 0 },
52 { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_OTHER << 8,
53 0xffff00, 0 },
54 { 0, 0, 0 },
55 };
56 MODULE_DEVICE_TABLE(pci, pciidlist);
57
58 static int qxl_modeset = -1;
59 int qxl_num_crtc = 4;
60
61 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
62 module_param_named(modeset, qxl_modeset, int, 0400);
63
64 MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)");
65 module_param_named(num_heads, qxl_num_crtc, int, 0400);
66
67 static struct drm_driver qxl_driver;
68 static struct pci_driver qxl_pci_driver;
69
is_vga(struct pci_dev * pdev)70 static bool is_vga(struct pci_dev *pdev)
71 {
72 return pdev->class == PCI_CLASS_DISPLAY_VGA << 8;
73 }
74
75 static int
qxl_pci_probe(struct pci_dev * pdev,const struct pci_device_id * ent)76 qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
77 {
78 struct qxl_device *qdev;
79 int ret;
80
81 if (pdev->revision < 4) {
82 DRM_ERROR("qxl too old, doesn't support client_monitors_config,"
83 " use xf86-video-qxl in user mode");
84 return -EINVAL; /* TODO: ENODEV ? */
85 }
86
87 qdev = devm_drm_dev_alloc(&pdev->dev, &qxl_driver,
88 struct qxl_device, ddev);
89 if (IS_ERR(qdev)) {
90 pr_err("Unable to init drm dev");
91 return -ENOMEM;
92 }
93
94 ret = pci_enable_device(pdev);
95 if (ret)
96 return ret;
97
98 ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &qxl_driver);
99 if (ret)
100 goto disable_pci;
101
102 if (is_vga(pdev) && pdev->revision < 5) {
103 ret = vga_get_interruptible(pdev, VGA_RSRC_LEGACY_IO);
104 if (ret) {
105 DRM_ERROR("can't get legacy vga ioports\n");
106 goto disable_pci;
107 }
108 }
109
110 ret = qxl_device_init(qdev, pdev);
111 if (ret)
112 goto put_vga;
113
114 ret = qxl_modeset_init(qdev);
115 if (ret)
116 goto unload;
117
118 drm_kms_helper_poll_init(&qdev->ddev);
119
120 /* Complete initialization. */
121 ret = drm_dev_register(&qdev->ddev, ent->driver_data);
122 if (ret)
123 goto modeset_cleanup;
124
125 drm_fbdev_generic_setup(&qdev->ddev, 32);
126 return 0;
127
128 modeset_cleanup:
129 qxl_modeset_fini(qdev);
130 unload:
131 qxl_device_fini(qdev);
132 put_vga:
133 if (is_vga(pdev) && pdev->revision < 5)
134 vga_put(pdev, VGA_RSRC_LEGACY_IO);
135 disable_pci:
136 pci_disable_device(pdev);
137
138 return ret;
139 }
140
qxl_drm_release(struct drm_device * dev)141 static void qxl_drm_release(struct drm_device *dev)
142 {
143 struct qxl_device *qdev = to_qxl(dev);
144
145 /*
146 * TODO: qxl_device_fini() call should be in qxl_pci_remove(),
147 * reordering qxl_modeset_fini() + qxl_device_fini() calls is
148 * non-trivial though.
149 */
150 qxl_modeset_fini(qdev);
151 qxl_device_fini(qdev);
152 }
153
154 static void
qxl_pci_remove(struct pci_dev * pdev)155 qxl_pci_remove(struct pci_dev *pdev)
156 {
157 struct drm_device *dev = pci_get_drvdata(pdev);
158
159 drm_dev_unregister(dev);
160 drm_atomic_helper_shutdown(dev);
161 if (is_vga(pdev) && pdev->revision < 5)
162 vga_put(pdev, VGA_RSRC_LEGACY_IO);
163 }
164
165 DEFINE_DRM_GEM_FOPS(qxl_fops);
166
qxl_drm_freeze(struct drm_device * dev)167 static int qxl_drm_freeze(struct drm_device *dev)
168 {
169 struct pci_dev *pdev = to_pci_dev(dev->dev);
170 struct qxl_device *qdev = to_qxl(dev);
171 int ret;
172
173 ret = drm_mode_config_helper_suspend(dev);
174 if (ret)
175 return ret;
176
177 qxl_destroy_monitors_object(qdev);
178 qxl_surf_evict(qdev);
179 qxl_vram_evict(qdev);
180
181 while (!qxl_check_idle(qdev->command_ring));
182 while (!qxl_check_idle(qdev->release_ring))
183 qxl_queue_garbage_collect(qdev, 1);
184
185 pci_save_state(pdev);
186
187 return 0;
188 }
189
qxl_drm_resume(struct drm_device * dev,bool thaw)190 static int qxl_drm_resume(struct drm_device *dev, bool thaw)
191 {
192 struct qxl_device *qdev = to_qxl(dev);
193
194 qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
195 if (!thaw) {
196 qxl_reinit_memslots(qdev);
197 qxl_ring_init_hdr(qdev->release_ring);
198 }
199
200 qxl_create_monitors_object(qdev);
201 return drm_mode_config_helper_resume(dev);
202 }
203
qxl_pm_suspend(struct device * dev)204 static int qxl_pm_suspend(struct device *dev)
205 {
206 struct pci_dev *pdev = to_pci_dev(dev);
207 struct drm_device *drm_dev = pci_get_drvdata(pdev);
208 int error;
209
210 error = qxl_drm_freeze(drm_dev);
211 if (error)
212 return error;
213
214 pci_disable_device(pdev);
215 pci_set_power_state(pdev, PCI_D3hot);
216 return 0;
217 }
218
qxl_pm_resume(struct device * dev)219 static int qxl_pm_resume(struct device *dev)
220 {
221 struct pci_dev *pdev = to_pci_dev(dev);
222 struct drm_device *drm_dev = pci_get_drvdata(pdev);
223
224 pci_set_power_state(pdev, PCI_D0);
225 pci_restore_state(pdev);
226 if (pci_enable_device(pdev)) {
227 return -EIO;
228 }
229
230 return qxl_drm_resume(drm_dev, false);
231 }
232
qxl_pm_thaw(struct device * dev)233 static int qxl_pm_thaw(struct device *dev)
234 {
235 struct drm_device *drm_dev = dev_get_drvdata(dev);
236
237 return qxl_drm_resume(drm_dev, true);
238 }
239
qxl_pm_freeze(struct device * dev)240 static int qxl_pm_freeze(struct device *dev)
241 {
242 struct drm_device *drm_dev = dev_get_drvdata(dev);
243
244 return qxl_drm_freeze(drm_dev);
245 }
246
qxl_pm_restore(struct device * dev)247 static int qxl_pm_restore(struct device *dev)
248 {
249 struct pci_dev *pdev = to_pci_dev(dev);
250 struct drm_device *drm_dev = pci_get_drvdata(pdev);
251 struct qxl_device *qdev = to_qxl(drm_dev);
252
253 qxl_io_reset(qdev);
254 return qxl_drm_resume(drm_dev, false);
255 }
256
257 static const struct dev_pm_ops qxl_pm_ops = {
258 .suspend = qxl_pm_suspend,
259 .resume = qxl_pm_resume,
260 .freeze = qxl_pm_freeze,
261 .thaw = qxl_pm_thaw,
262 .poweroff = qxl_pm_freeze,
263 .restore = qxl_pm_restore,
264 };
265 static struct pci_driver qxl_pci_driver = {
266 .name = DRIVER_NAME,
267 .id_table = pciidlist,
268 .probe = qxl_pci_probe,
269 .remove = qxl_pci_remove,
270 .driver.pm = &qxl_pm_ops,
271 };
272
273 static struct drm_driver qxl_driver = {
274 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
275
276 .dumb_create = qxl_mode_dumb_create,
277 .dumb_map_offset = drm_gem_ttm_dumb_map_offset,
278 #if defined(CONFIG_DEBUG_FS)
279 .debugfs_init = qxl_debugfs_init,
280 #endif
281 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
282 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
283 .gem_prime_import_sg_table = qxl_gem_prime_import_sg_table,
284 .fops = &qxl_fops,
285 .ioctls = qxl_ioctls,
286 .name = DRIVER_NAME,
287 .desc = DRIVER_DESC,
288 .date = DRIVER_DATE,
289 .major = 0,
290 .minor = 1,
291 .patchlevel = 0,
292
293 .release = qxl_drm_release,
294 };
295
qxl_init(void)296 static int __init qxl_init(void)
297 {
298 if (vgacon_text_force() && qxl_modeset == -1)
299 return -EINVAL;
300
301 if (qxl_modeset == 0)
302 return -EINVAL;
303 qxl_driver.num_ioctls = qxl_max_ioctls;
304 return pci_register_driver(&qxl_pci_driver);
305 }
306
qxl_exit(void)307 static void __exit qxl_exit(void)
308 {
309 pci_unregister_driver(&qxl_pci_driver);
310 }
311
312 module_init(qxl_init);
313 module_exit(qxl_exit);
314
315 MODULE_AUTHOR(DRIVER_AUTHOR);
316 MODULE_DESCRIPTION(DRIVER_DESC);
317 MODULE_LICENSE("GPL and additional rights");
318
