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 DEFINE_PCI_DEVICE_TABLE(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	.mmap = qxl_mmap,
 88};
 89
 90static int qxl_drm_freeze(struct drm_device *dev)
 91{
 92	struct pci_dev *pdev = dev->pdev;
 93	struct qxl_device *qdev = dev->dev_private;
 94	struct drm_crtc *crtc;
 95
 96	drm_kms_helper_poll_disable(dev);
 97
 98	console_lock();
 99	qxl_fbdev_set_suspend(qdev, 1);
100	console_unlock();
101
102	/* unpin the front buffers */
103	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
104		struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
105		if (crtc->enabled)
106			(*crtc_funcs->disable)(crtc);
107	}
108
109	qxl_destroy_monitors_object(qdev);
110	qxl_surf_evict(qdev);
111	qxl_vram_evict(qdev);
112
113	while (!qxl_check_idle(qdev->command_ring));
114	while (!qxl_check_idle(qdev->release_ring))
115		qxl_queue_garbage_collect(qdev, 1);
116
117	pci_save_state(pdev);
118
119	return 0;
120}
121
122static int qxl_drm_resume(struct drm_device *dev, bool thaw)
123{
124	struct qxl_device *qdev = dev->dev_private;
125
126	qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
127	if (!thaw) {
128		qxl_reinit_memslots(qdev);
129		qxl_ring_init_hdr(qdev->release_ring);
130	}
131
132	qxl_create_monitors_object(qdev);
133	drm_helper_resume_force_mode(dev);
134
135	console_lock();
136	qxl_fbdev_set_suspend(qdev, 0);
137	console_unlock();
138
139	drm_kms_helper_poll_enable(dev);
140	return 0;
141}
142
143static int qxl_pm_suspend(struct device *dev)
144{
145	struct pci_dev *pdev = to_pci_dev(dev);
146	struct drm_device *drm_dev = pci_get_drvdata(pdev);
147	int error;
148
149	error = qxl_drm_freeze(drm_dev);
150	if (error)
151		return error;
152
153	pci_disable_device(pdev);
154	pci_set_power_state(pdev, PCI_D3hot);
155	return 0;
156}
157
158static int qxl_pm_resume(struct device *dev)
159{
160	struct pci_dev *pdev = to_pci_dev(dev);
161	struct drm_device *drm_dev = pci_get_drvdata(pdev);
162
163	pci_set_power_state(pdev, PCI_D0);
164	pci_restore_state(pdev);
165	if (pci_enable_device(pdev)) {
166		return -EIO;
167	}
168
169	return qxl_drm_resume(drm_dev, false);
170}
171
172static int qxl_pm_thaw(struct device *dev)
173{
174	struct pci_dev *pdev = to_pci_dev(dev);
175	struct drm_device *drm_dev = pci_get_drvdata(pdev);
176
177	return qxl_drm_resume(drm_dev, true);
178}
179
180static int qxl_pm_freeze(struct device *dev)
181{
182	struct pci_dev *pdev = to_pci_dev(dev);
183	struct drm_device *drm_dev = pci_get_drvdata(pdev);
184
185	return qxl_drm_freeze(drm_dev);
186}
187
188static int qxl_pm_restore(struct device *dev)
189{
190	struct pci_dev *pdev = to_pci_dev(dev);
191	struct drm_device *drm_dev = pci_get_drvdata(pdev);
192	struct qxl_device *qdev = drm_dev->dev_private;
193
194	qxl_io_reset(qdev);
195	return qxl_drm_resume(drm_dev, false);
196}
197
198static const struct dev_pm_ops qxl_pm_ops = {
199	.suspend = qxl_pm_suspend,
200	.resume = qxl_pm_resume,
201	.freeze = qxl_pm_freeze,
202	.thaw = qxl_pm_thaw,
203	.poweroff = qxl_pm_freeze,
204	.restore = qxl_pm_restore,
205};
206static struct pci_driver qxl_pci_driver = {
207	 .name = DRIVER_NAME,
208	 .id_table = pciidlist,
209	 .probe = qxl_pci_probe,
210	 .remove = qxl_pci_remove,
211	 .driver.pm = &qxl_pm_ops,
212};
213
214static struct drm_driver qxl_driver = {
215	.driver_features = DRIVER_GEM | DRIVER_MODESET |
216			   DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED,
217	.dev_priv_size = 0,
218	.load = qxl_driver_load,
219	.unload = qxl_driver_unload,
220
221	.dumb_create = qxl_mode_dumb_create,
222	.dumb_map_offset = qxl_mode_dumb_mmap,
223	.dumb_destroy = drm_gem_dumb_destroy,
224#if defined(CONFIG_DEBUG_FS)
225	.debugfs_init = qxl_debugfs_init,
226	.debugfs_cleanup = qxl_debugfs_takedown,
227#endif
228	.gem_free_object = qxl_gem_object_free,
229	.gem_open_object = qxl_gem_object_open,
230	.gem_close_object = qxl_gem_object_close,
231	.fops = &qxl_fops,
232	.ioctls = qxl_ioctls,
233	.irq_handler = qxl_irq_handler,
234	.name = DRIVER_NAME,
235	.desc = DRIVER_DESC,
236	.date = DRIVER_DATE,
237	.major = 0,
238	.minor = 1,
239	.patchlevel = 0,
240};
241
242static int __init qxl_init(void)
243{
244#ifdef CONFIG_VGA_CONSOLE
245	if (vgacon_text_force() && qxl_modeset == -1)
246		return -EINVAL;
247#endif
248
249	if (qxl_modeset == 0)
250		return -EINVAL;
251	qxl_driver.num_ioctls = qxl_max_ioctls;
252	return drm_pci_init(&qxl_driver, &qxl_pci_driver);
253}
254
255static void __exit qxl_exit(void)
256{
257	drm_pci_exit(&qxl_driver, &qxl_pci_driver);
258}
259
260module_init(qxl_init);
261module_exit(qxl_exit);
262
263MODULE_AUTHOR(DRIVER_AUTHOR);
264MODULE_DESCRIPTION(DRIVER_DESC);
265MODULE_LICENSE("GPL and additional rights");