qxl_drv.c revision 47c1296829505d119d7d58dd23d39cc5db344f12 
1/* vim: set ts=8 sw=8 tw=78 ai noexpandtab */
2/* qxl_drv.c -- QXL driver -*- linux-c -*-
3 *
4 * Copyright 2011 Red Hat, Inc.
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the next
15 * paragraph) shall be included in all copies or substantial portions of the
16 * Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
21 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
22 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
23 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
24 * OTHER DEALINGS IN THE SOFTWARE.
25 *
26 * Authors:
27 *    Dave Airlie <airlie@redhat.com>
28 *    Alon Levy <alevy@redhat.com>
29 */
30
31#include <linux/module.h>
32#include <linux/console.h>
33
34#include "drmP.h"
35#include "drm/drm.h"
36#include "drm_crtc_helper.h"
37#include "qxl_drv.h"
38#include "qxl_object.h"
39
40extern int qxl_max_ioctls;
41static const struct pci_device_id pciidlist[] = {
42	{ 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8,
43	  0xffff00, 0 },
44	{ 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_OTHER << 8,
45	  0xffff00, 0 },
46	{ 0, 0, 0 },
47};
48MODULE_DEVICE_TABLE(pci, pciidlist);
49
50static int qxl_modeset = -1;
51int qxl_num_crtc = 4;
52
53MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
54module_param_named(modeset, qxl_modeset, int, 0400);
55
56MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)");
57module_param_named(num_heads, qxl_num_crtc, int, 0400);
58
59static struct drm_driver qxl_driver;
60static struct pci_driver qxl_pci_driver;
61
62static int
63qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
64{
65	if (pdev->revision < 4) {
66		DRM_ERROR("qxl too old, doesn't support client_monitors_config,"
67			  " use xf86-video-qxl in user mode");
68		return -EINVAL; /* TODO: ENODEV ? */
69	}
70	return drm_get_pci_dev(pdev, ent, &qxl_driver);
71}
72
73static void
74qxl_pci_remove(struct pci_dev *pdev)
75{
76	struct drm_device *dev = pci_get_drvdata(pdev);
77
78	drm_put_dev(dev);
79}
80
81static const struct file_operations qxl_fops = {
82	.owner = THIS_MODULE,
83	.open = drm_open,
84	.release = drm_release,
85	.unlocked_ioctl = drm_ioctl,
86	.poll = drm_poll,
87	.read = drm_read,
88	.mmap = qxl_mmap,
89};
90
91static int qxl_drm_freeze(struct drm_device *dev)
92{
93	struct pci_dev *pdev = dev->pdev;
94	struct qxl_device *qdev = dev->dev_private;
95	struct drm_crtc *crtc;
96
97	drm_kms_helper_poll_disable(dev);
98
99	console_lock();
100	qxl_fbdev_set_suspend(qdev, 1);
101	console_unlock();
102
103	/* unpin the front buffers */
104	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
105		struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
106		if (crtc->enabled)
107			(*crtc_funcs->disable)(crtc);
108	}
109
110	qxl_destroy_monitors_object(qdev);
111	qxl_surf_evict(qdev);
112	qxl_vram_evict(qdev);
113
114	while (!qxl_check_idle(qdev->command_ring));
115	while (!qxl_check_idle(qdev->release_ring))
116		qxl_queue_garbage_collect(qdev, 1);
117
118	pci_save_state(pdev);
119
120	return 0;
121}
122
123static int qxl_drm_resume(struct drm_device *dev, bool thaw)
124{
125	struct qxl_device *qdev = dev->dev_private;
126
127	qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
128	if (!thaw) {
129		qxl_reinit_memslots(qdev);
130		qxl_ring_init_hdr(qdev->release_ring);
131	}
132
133	qxl_create_monitors_object(qdev);
134	drm_helper_resume_force_mode(dev);
135
136	console_lock();
137	qxl_fbdev_set_suspend(qdev, 0);
138	console_unlock();
139
140	drm_kms_helper_poll_enable(dev);
141	return 0;
142}
143
144static int qxl_pm_suspend(struct device *dev)
145{
146	struct pci_dev *pdev = to_pci_dev(dev);
147	struct drm_device *drm_dev = pci_get_drvdata(pdev);
148	int error;
149
150	error = qxl_drm_freeze(drm_dev);
151	if (error)
152		return error;
153
154	pci_disable_device(pdev);
155	pci_set_power_state(pdev, PCI_D3hot);
156	return 0;
157}
158
159static int qxl_pm_resume(struct device *dev)
160{
161	struct pci_dev *pdev = to_pci_dev(dev);
162	struct drm_device *drm_dev = pci_get_drvdata(pdev);
163
164	pci_set_power_state(pdev, PCI_D0);
165	pci_restore_state(pdev);
166	if (pci_enable_device(pdev)) {
167		return -EIO;
168	}
169
170	return qxl_drm_resume(drm_dev, false);
171}
172
173static int qxl_pm_thaw(struct device *dev)
174{
175	struct pci_dev *pdev = to_pci_dev(dev);
176	struct drm_device *drm_dev = pci_get_drvdata(pdev);
177
178	return qxl_drm_resume(drm_dev, true);
179}
180
181static int qxl_pm_freeze(struct device *dev)
182{
183	struct pci_dev *pdev = to_pci_dev(dev);
184	struct drm_device *drm_dev = pci_get_drvdata(pdev);
185
186	return qxl_drm_freeze(drm_dev);
187}
188
189static int qxl_pm_restore(struct device *dev)
190{
191	struct pci_dev *pdev = to_pci_dev(dev);
192	struct drm_device *drm_dev = pci_get_drvdata(pdev);
193	struct qxl_device *qdev = drm_dev->dev_private;
194
195	qxl_io_reset(qdev);
196	return qxl_drm_resume(drm_dev, false);
197}
198
199static u32 qxl_noop_get_vblank_counter(struct drm_device *dev, int crtc)
200{
201	return dev->vblank[crtc].count.counter;
202}
203
204static int qxl_noop_enable_vblank(struct drm_device *dev, int crtc)
205{
206	return 0;
207}
208
209static void qxl_noop_disable_vblank(struct drm_device *dev, int crtc)
210{
211}
212
213static const struct dev_pm_ops qxl_pm_ops = {
214	.suspend = qxl_pm_suspend,
215	.resume = qxl_pm_resume,
216	.freeze = qxl_pm_freeze,
217	.thaw = qxl_pm_thaw,
218	.poweroff = qxl_pm_freeze,
219	.restore = qxl_pm_restore,
220};
221static struct pci_driver qxl_pci_driver = {
222	 .name = DRIVER_NAME,
223	 .id_table = pciidlist,
224	 .probe = qxl_pci_probe,
225	 .remove = qxl_pci_remove,
226	 .driver.pm = &qxl_pm_ops,
227};
228
229static struct drm_driver qxl_driver = {
230	.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
231			   DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED,
232	.load = qxl_driver_load,
233	.unload = qxl_driver_unload,
234	.get_vblank_counter = qxl_noop_get_vblank_counter,
235	.enable_vblank = qxl_noop_enable_vblank,
236	.disable_vblank = qxl_noop_disable_vblank,
237
238	.dumb_create = qxl_mode_dumb_create,
239	.dumb_map_offset = qxl_mode_dumb_mmap,
240	.dumb_destroy = drm_gem_dumb_destroy,
241#if defined(CONFIG_DEBUG_FS)
242	.debugfs_init = qxl_debugfs_init,
243	.debugfs_cleanup = qxl_debugfs_takedown,
244#endif
245	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
246	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
247	.gem_prime_export = drm_gem_prime_export,
248	.gem_prime_import = drm_gem_prime_import,
249	.gem_prime_pin = qxl_gem_prime_pin,
250	.gem_prime_unpin = qxl_gem_prime_unpin,
251	.gem_prime_get_sg_table = qxl_gem_prime_get_sg_table,
252	.gem_prime_import_sg_table = qxl_gem_prime_import_sg_table,
253	.gem_prime_vmap = qxl_gem_prime_vmap,
254	.gem_prime_vunmap = qxl_gem_prime_vunmap,
255	.gem_prime_mmap = qxl_gem_prime_mmap,
256	.gem_free_object = qxl_gem_object_free,
257	.gem_open_object = qxl_gem_object_open,
258	.gem_close_object = qxl_gem_object_close,
259	.fops = &qxl_fops,
260	.ioctls = qxl_ioctls,
261	.irq_handler = qxl_irq_handler,
262	.name = DRIVER_NAME,
263	.desc = DRIVER_DESC,
264	.date = DRIVER_DATE,
265	.major = 0,
266	.minor = 1,
267	.patchlevel = 0,
268};
269
270static int __init qxl_init(void)
271{
272#ifdef CONFIG_VGA_CONSOLE
273	if (vgacon_text_force() && qxl_modeset == -1)
274		return -EINVAL;
275#endif
276
277	if (qxl_modeset == 0)
278		return -EINVAL;
279	qxl_driver.num_ioctls = qxl_max_ioctls;
280	return drm_pci_init(&qxl_driver, &qxl_pci_driver);
281}
282
283static void __exit qxl_exit(void)
284{
285	drm_pci_exit(&qxl_driver, &qxl_pci_driver);
286}
287
288module_init(qxl_init);
289module_exit(qxl_exit);
290
291MODULE_AUTHOR(DRIVER_AUTHOR);
292MODULE_DESCRIPTION(DRIVER_DESC);
293MODULE_LICENSE("GPL and additional rights");
294