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/module.h>
33 #include <linux/pci.h>
34 #include <linux/vgaarb.h>
35
36 #include <drm/drm.h>
37 #include <drm/drm_aperture.h>
38 #include <drm/drm_atomic_helper.h>
39 #include <drm/drm_drv.h>
40 #include <drm/drm_fbdev_generic.h>
41 #include <drm/drm_file.h>
42 #include <drm/drm_gem_ttm_helper.h>
43 #include <drm/drm_module.h>
44 #include <drm/drm_modeset_helper.h>
45 #include <drm/drm_prime.h>
46 #include <drm/drm_probe_helper.h>
47
48 #include "qxl_object.h"
49
50 static const struct pci_device_id pciidlist[] = {
51 { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8,
52 0xffff00, 0 },
53 { 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_OTHER << 8,
54 0xffff00, 0 },
55 { 0, 0, 0 },
56 };
57 MODULE_DEVICE_TABLE(pci, pciidlist);
58
59 static int qxl_modeset = -1;
60 int qxl_num_crtc = 4;
61
62 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
63 module_param_named(modeset, qxl_modeset, int, 0400);
64
65 MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)");
66 module_param_named(num_heads, qxl_num_crtc, int, 0400);
67
68 static struct drm_driver qxl_driver;
69 static struct pci_driver qxl_pci_driver;
70
is_vga(struct pci_dev * pdev)71 static bool is_vga(struct pci_dev *pdev)
72 {
73 return pdev->class == PCI_CLASS_DISPLAY_VGA << 8;
74 }
75
76 static int
qxl_pci_probe(struct pci_dev * pdev,const struct pci_device_id * ent)77 qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
78 {
79 struct qxl_device *qdev;
80 int ret;
81
82 if (pdev->revision < 4) {
83 DRM_ERROR("qxl too old, doesn't support client_monitors_config,"
84 " use xf86-video-qxl in user mode");
85 return -EINVAL; /* TODO: ENODEV ? */
86 }
87
88 qdev = devm_drm_dev_alloc(&pdev->dev, &qxl_driver,
89 struct qxl_device, ddev);
90 if (IS_ERR(qdev)) {
91 pr_err("Unable to init drm dev");
92 return -ENOMEM;
93 }
94
95 ret = pci_enable_device(pdev);
96 if (ret)
97 return ret;
98
99 ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &qxl_driver);
100 if (ret)
101 goto disable_pci;
102
103 if (is_vga(pdev) && pdev->revision < 5) {
104 ret = vga_get_interruptible(pdev, VGA_RSRC_LEGACY_IO);
105 if (ret) {
106 DRM_ERROR("can't get legacy vga ioports\n");
107 goto disable_pci;
108 }
109 }
110
111 ret = qxl_device_init(qdev, pdev);
112 if (ret)
113 goto put_vga;
114
115 ret = qxl_modeset_init(qdev);
116 if (ret)
117 goto unload;
118
119 drm_kms_helper_poll_init(&qdev->ddev);
120
121 /* Complete initialization. */
122 ret = drm_dev_register(&qdev->ddev, ent->driver_data);
123 if (ret)
124 goto modeset_cleanup;
125
126 drm_fbdev_generic_setup(&qdev->ddev, 32);
127 return 0;
128
129 modeset_cleanup:
130 qxl_modeset_fini(qdev);
131 unload:
132 qxl_device_fini(qdev);
133 put_vga:
134 if (is_vga(pdev) && pdev->revision < 5)
135 vga_put(pdev, VGA_RSRC_LEGACY_IO);
136 disable_pci:
137 pci_disable_device(pdev);
138
139 return ret;
140 }
141
qxl_drm_release(struct drm_device * dev)142 static void qxl_drm_release(struct drm_device *dev)
143 {
144 struct qxl_device *qdev = to_qxl(dev);
145
146 /*
147 * TODO: qxl_device_fini() call should be in qxl_pci_remove(),
148 * reordering qxl_modeset_fini() + qxl_device_fini() calls is
149 * non-trivial though.
150 */
151 qxl_modeset_fini(qdev);
152 qxl_device_fini(qdev);
153 }
154
155 static void
qxl_pci_remove(struct pci_dev * pdev)156 qxl_pci_remove(struct pci_dev *pdev)
157 {
158 struct drm_device *dev = pci_get_drvdata(pdev);
159
160 drm_dev_unregister(dev);
161 drm_atomic_helper_shutdown(dev);
162 if (is_vga(pdev) && pdev->revision < 5)
163 vga_put(pdev, VGA_RSRC_LEGACY_IO);
164 }
165
166 DEFINE_DRM_GEM_FOPS(qxl_fops);
167
qxl_drm_freeze(struct drm_device * dev)168 static int qxl_drm_freeze(struct drm_device *dev)
169 {
170 struct pci_dev *pdev = to_pci_dev(dev->dev);
171 struct qxl_device *qdev = to_qxl(dev);
172 int ret;
173
174 ret = drm_mode_config_helper_suspend(dev);
175 if (ret)
176 return ret;
177
178 qxl_destroy_monitors_object(qdev);
179 qxl_surf_evict(qdev);
180 qxl_vram_evict(qdev);
181
182 while (!qxl_check_idle(qdev->command_ring));
183 while (!qxl_check_idle(qdev->release_ring))
184 qxl_queue_garbage_collect(qdev, 1);
185
186 pci_save_state(pdev);
187
188 return 0;
189 }
190
qxl_drm_resume(struct drm_device * dev,bool thaw)191 static int qxl_drm_resume(struct drm_device *dev, bool thaw)
192 {
193 struct qxl_device *qdev = to_qxl(dev);
194
195 qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
196 if (!thaw) {
197 qxl_reinit_memslots(qdev);
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 struct qxl_device *qdev = to_qxl(drm_dev);
224
225 pci_set_power_state(pdev, PCI_D0);
226 pci_restore_state(pdev);
227 if (pci_enable_device(pdev)) {
228 return -EIO;
229 }
230
231 qxl_io_reset(qdev);
232 return qxl_drm_resume(drm_dev, false);
233 }
234
qxl_pm_thaw(struct device * dev)235 static int qxl_pm_thaw(struct device *dev)
236 {
237 struct drm_device *drm_dev = dev_get_drvdata(dev);
238
239 return qxl_drm_resume(drm_dev, true);
240 }
241
qxl_pm_freeze(struct device * dev)242 static int qxl_pm_freeze(struct device *dev)
243 {
244 struct drm_device *drm_dev = dev_get_drvdata(dev);
245
246 return qxl_drm_freeze(drm_dev);
247 }
248
qxl_pm_restore(struct device * dev)249 static int qxl_pm_restore(struct device *dev)
250 {
251 struct pci_dev *pdev = to_pci_dev(dev);
252 struct drm_device *drm_dev = pci_get_drvdata(pdev);
253 struct qxl_device *qdev = to_qxl(drm_dev);
254
255 qxl_io_reset(qdev);
256 return qxl_drm_resume(drm_dev, false);
257 }
258
259 static const struct dev_pm_ops qxl_pm_ops = {
260 .suspend = qxl_pm_suspend,
261 .resume = qxl_pm_resume,
262 .freeze = qxl_pm_freeze,
263 .thaw = qxl_pm_thaw,
264 .poweroff = qxl_pm_freeze,
265 .restore = qxl_pm_restore,
266 };
267 static struct pci_driver qxl_pci_driver = {
268 .name = DRIVER_NAME,
269 .id_table = pciidlist,
270 .probe = qxl_pci_probe,
271 .remove = qxl_pci_remove,
272 .driver.pm = &qxl_pm_ops,
273 };
274
275 static const struct drm_ioctl_desc qxl_ioctls[] = {
276 DRM_IOCTL_DEF_DRV(QXL_ALLOC, qxl_alloc_ioctl, DRM_AUTH),
277 DRM_IOCTL_DEF_DRV(QXL_MAP, qxl_map_ioctl, DRM_AUTH),
278 DRM_IOCTL_DEF_DRV(QXL_EXECBUFFER, qxl_execbuffer_ioctl, DRM_AUTH),
279 DRM_IOCTL_DEF_DRV(QXL_UPDATE_AREA, qxl_update_area_ioctl, DRM_AUTH),
280 DRM_IOCTL_DEF_DRV(QXL_GETPARAM, qxl_getparam_ioctl, DRM_AUTH),
281 DRM_IOCTL_DEF_DRV(QXL_CLIENTCAP, qxl_clientcap_ioctl, DRM_AUTH),
282 DRM_IOCTL_DEF_DRV(QXL_ALLOC_SURF, qxl_alloc_surf_ioctl, DRM_AUTH),
283 };
284
285 static struct drm_driver qxl_driver = {
286 .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC | DRIVER_CURSOR_HOTSPOT,
287
288 .dumb_create = qxl_mode_dumb_create,
289 .dumb_map_offset = drm_gem_ttm_dumb_map_offset,
290 #if defined(CONFIG_DEBUG_FS)
291 .debugfs_init = qxl_debugfs_init,
292 #endif
293 .gem_prime_import_sg_table = qxl_gem_prime_import_sg_table,
294 .fops = &qxl_fops,
295 .ioctls = qxl_ioctls,
296 .num_ioctls = ARRAY_SIZE(qxl_ioctls),
297 .name = DRIVER_NAME,
298 .desc = DRIVER_DESC,
299 .date = DRIVER_DATE,
300 .major = 0,
301 .minor = 1,
302 .patchlevel = 0,
303
304 .release = qxl_drm_release,
305 };
306
307 drm_module_pci_driver_if_modeset(qxl_pci_driver, qxl_modeset);
308
309 MODULE_AUTHOR(DRIVER_AUTHOR);
310 MODULE_DESCRIPTION(DRIVER_DESC);
311 MODULE_LICENSE("GPL and additional rights");
312