xref: /linux/drivers/gpu/drm/qxl/qxl_drv.c (revision 03c305861c70d6db898dd2379b882e7772a5c5d0)
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 
71 static int
72 qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
73 {
74 	struct qxl_device *qdev;
75 	int ret;
76 
77 	if (pdev->revision < 4) {
78 		DRM_ERROR("qxl too old, doesn't support client_monitors_config,"
79 			  " use xf86-video-qxl in user mode");
80 		return -EINVAL; /* TODO: ENODEV ? */
81 	}
82 
83 	qdev = devm_drm_dev_alloc(&pdev->dev, &qxl_driver,
84 				  struct qxl_device, ddev);
85 	if (IS_ERR(qdev)) {
86 		pr_err("Unable to init drm dev");
87 		return -ENOMEM;
88 	}
89 
90 	ret = pci_enable_device(pdev);
91 	if (ret)
92 		return ret;
93 
94 	ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &qxl_driver);
95 	if (ret)
96 		goto disable_pci;
97 
98 	if (pci_is_vga(pdev) && pdev->revision < 5) {
99 		ret = vga_get_interruptible(pdev, VGA_RSRC_LEGACY_IO);
100 		if (ret) {
101 			DRM_ERROR("can't get legacy vga ioports\n");
102 			goto disable_pci;
103 		}
104 	}
105 
106 	ret = qxl_device_init(qdev, pdev);
107 	if (ret)
108 		goto put_vga;
109 
110 	ret = qxl_modeset_init(qdev);
111 	if (ret)
112 		goto unload;
113 
114 	drm_kms_helper_poll_init(&qdev->ddev);
115 
116 	/* Complete initialization. */
117 	ret = drm_dev_register(&qdev->ddev, ent->driver_data);
118 	if (ret)
119 		goto modeset_cleanup;
120 
121 	drm_fbdev_generic_setup(&qdev->ddev, 32);
122 	return 0;
123 
124 modeset_cleanup:
125 	qxl_modeset_fini(qdev);
126 unload:
127 	qxl_device_fini(qdev);
128 put_vga:
129 	if (pci_is_vga(pdev) && pdev->revision < 5)
130 		vga_put(pdev, VGA_RSRC_LEGACY_IO);
131 disable_pci:
132 	pci_disable_device(pdev);
133 
134 	return ret;
135 }
136 
137 static void qxl_drm_release(struct drm_device *dev)
138 {
139 	struct qxl_device *qdev = to_qxl(dev);
140 
141 	/*
142 	 * TODO: qxl_device_fini() call should be in qxl_pci_remove(),
143 	 * reordering qxl_modeset_fini() + qxl_device_fini() calls is
144 	 * non-trivial though.
145 	 */
146 	qxl_modeset_fini(qdev);
147 	qxl_device_fini(qdev);
148 }
149 
150 static void
151 qxl_pci_remove(struct pci_dev *pdev)
152 {
153 	struct drm_device *dev = pci_get_drvdata(pdev);
154 
155 	drm_dev_unregister(dev);
156 	drm_atomic_helper_shutdown(dev);
157 	if (pci_is_vga(pdev) && pdev->revision < 5)
158 		vga_put(pdev, VGA_RSRC_LEGACY_IO);
159 }
160 
161 static void
162 qxl_pci_shutdown(struct pci_dev *pdev)
163 {
164 	drm_atomic_helper_shutdown(pci_get_drvdata(pdev));
165 }
166 
167 DEFINE_DRM_GEM_FOPS(qxl_fops);
168 
169 static int qxl_drm_freeze(struct drm_device *dev)
170 {
171 	struct pci_dev *pdev = to_pci_dev(dev->dev);
172 	struct qxl_device *qdev = to_qxl(dev);
173 	int ret;
174 
175 	ret = drm_mode_config_helper_suspend(dev);
176 	if (ret)
177 		return ret;
178 
179 	qxl_destroy_monitors_object(qdev);
180 	qxl_surf_evict(qdev);
181 	qxl_vram_evict(qdev);
182 
183 	while (!qxl_check_idle(qdev->command_ring));
184 	while (!qxl_check_idle(qdev->release_ring))
185 		qxl_queue_garbage_collect(qdev, 1);
186 
187 	pci_save_state(pdev);
188 
189 	return 0;
190 }
191 
192 static int qxl_drm_resume(struct drm_device *dev, bool thaw)
193 {
194 	struct qxl_device *qdev = to_qxl(dev);
195 
196 	qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
197 	if (!thaw) {
198 		qxl_reinit_memslots(qdev);
199 	}
200 
201 	qxl_create_monitors_object(qdev);
202 	return drm_mode_config_helper_resume(dev);
203 }
204 
205 static int qxl_pm_suspend(struct device *dev)
206 {
207 	struct pci_dev *pdev = to_pci_dev(dev);
208 	struct drm_device *drm_dev = pci_get_drvdata(pdev);
209 	int error;
210 
211 	error = qxl_drm_freeze(drm_dev);
212 	if (error)
213 		return error;
214 
215 	pci_disable_device(pdev);
216 	pci_set_power_state(pdev, PCI_D3hot);
217 	return 0;
218 }
219 
220 static int qxl_pm_resume(struct device *dev)
221 {
222 	struct pci_dev *pdev = to_pci_dev(dev);
223 	struct drm_device *drm_dev = pci_get_drvdata(pdev);
224 	struct qxl_device *qdev = to_qxl(drm_dev);
225 
226 	pci_set_power_state(pdev, PCI_D0);
227 	pci_restore_state(pdev);
228 	if (pci_enable_device(pdev)) {
229 		return -EIO;
230 	}
231 
232 	qxl_io_reset(qdev);
233 	return qxl_drm_resume(drm_dev, false);
234 }
235 
236 static int qxl_pm_thaw(struct device *dev)
237 {
238 	struct drm_device *drm_dev = dev_get_drvdata(dev);
239 
240 	return qxl_drm_resume(drm_dev, true);
241 }
242 
243 static int qxl_pm_freeze(struct device *dev)
244 {
245 	struct drm_device *drm_dev = dev_get_drvdata(dev);
246 
247 	return qxl_drm_freeze(drm_dev);
248 }
249 
250 static int qxl_pm_restore(struct device *dev)
251 {
252 	struct pci_dev *pdev = to_pci_dev(dev);
253 	struct drm_device *drm_dev = pci_get_drvdata(pdev);
254 	struct qxl_device *qdev = to_qxl(drm_dev);
255 
256 	qxl_io_reset(qdev);
257 	return qxl_drm_resume(drm_dev, false);
258 }
259 
260 static const struct dev_pm_ops qxl_pm_ops = {
261 	.suspend = qxl_pm_suspend,
262 	.resume = qxl_pm_resume,
263 	.freeze = qxl_pm_freeze,
264 	.thaw = qxl_pm_thaw,
265 	.poweroff = qxl_pm_freeze,
266 	.restore = qxl_pm_restore,
267 };
268 static struct pci_driver qxl_pci_driver = {
269 	 .name = DRIVER_NAME,
270 	 .id_table = pciidlist,
271 	 .probe = qxl_pci_probe,
272 	 .remove = qxl_pci_remove,
273 	 .shutdown = qxl_pci_shutdown,
274 	 .driver.pm = &qxl_pm_ops,
275 };
276 
277 static const struct drm_ioctl_desc qxl_ioctls[] = {
278 	DRM_IOCTL_DEF_DRV(QXL_ALLOC, qxl_alloc_ioctl, DRM_AUTH),
279 	DRM_IOCTL_DEF_DRV(QXL_MAP, qxl_map_ioctl, DRM_AUTH),
280 	DRM_IOCTL_DEF_DRV(QXL_EXECBUFFER, qxl_execbuffer_ioctl, DRM_AUTH),
281 	DRM_IOCTL_DEF_DRV(QXL_UPDATE_AREA, qxl_update_area_ioctl, DRM_AUTH),
282 	DRM_IOCTL_DEF_DRV(QXL_GETPARAM, qxl_getparam_ioctl, DRM_AUTH),
283 	DRM_IOCTL_DEF_DRV(QXL_CLIENTCAP, qxl_clientcap_ioctl, DRM_AUTH),
284 	DRM_IOCTL_DEF_DRV(QXL_ALLOC_SURF, qxl_alloc_surf_ioctl, DRM_AUTH),
285 };
286 
287 static struct drm_driver qxl_driver = {
288 	.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
289 
290 	.dumb_create = qxl_mode_dumb_create,
291 	.dumb_map_offset = drm_gem_ttm_dumb_map_offset,
292 #if defined(CONFIG_DEBUG_FS)
293 	.debugfs_init = qxl_debugfs_init,
294 #endif
295 	.gem_prime_import_sg_table = qxl_gem_prime_import_sg_table,
296 	.fops = &qxl_fops,
297 	.ioctls = qxl_ioctls,
298 	.num_ioctls = ARRAY_SIZE(qxl_ioctls),
299 	.name = DRIVER_NAME,
300 	.desc = DRIVER_DESC,
301 	.date = DRIVER_DATE,
302 	.major = 0,
303 	.minor = 1,
304 	.patchlevel = 0,
305 
306 	.release = qxl_drm_release,
307 };
308 
309 drm_module_pci_driver_if_modeset(qxl_pci_driver, qxl_modeset);
310 
311 MODULE_AUTHOR(DRIVER_AUTHOR);
312 MODULE_DESCRIPTION(DRIVER_DESC);
313 MODULE_LICENSE("GPL and additional rights");
314