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 <drm/drmP.h>
 35#include <drm/drm.h>
 36#include <drm/drm_crtc_helper.h>
 37#include "qxl_drv.h"
 38#include "qxl_object.h"
 39
 40static const struct pci_device_id pciidlist[] = {
 41	{ 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8,
 42	  0xffff00, 0 },
 43	{ 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_OTHER << 8,
 44	  0xffff00, 0 },
 45	{ 0, 0, 0 },
 46};
 47MODULE_DEVICE_TABLE(pci, pciidlist);
 48
 49static int qxl_modeset = -1;
 50int qxl_num_crtc = 4;
 51
 52MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
 53module_param_named(modeset, qxl_modeset, int, 0400);
 54
 55MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)");
 56module_param_named(num_heads, qxl_num_crtc, int, 0400);
 57
 58static struct drm_driver qxl_driver;
 59static struct pci_driver qxl_pci_driver;
 60
 61static int
 62qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 63{
 64	struct qxl_device *qdev;
 65	int ret;
 66
 67	if (pdev->revision < 4) {
 68		DRM_ERROR("qxl too old, doesn't support client_monitors_config,"
 69			  " use xf86-video-qxl in user mode");
 70		return -EINVAL; /* TODO: ENODEV ? */
 71	}
 72
 73	qdev = kzalloc(sizeof(struct qxl_device), GFP_KERNEL);
 74	if (!qdev)
 75		return -ENOMEM;
 76
 77	ret = pci_enable_device(pdev);
 78	if (ret)
 79		goto free_dev;
 80
 81	ret = qxl_device_init(qdev, &qxl_driver, pdev);
 82	if (ret)
 83		goto disable_pci;
 84
 85	ret = qxl_modeset_init(qdev);
 86	if (ret)
 87		goto unload;
 88
 89	drm_kms_helper_poll_init(&qdev->ddev);
 90
 91	/* Complete initialization. */
 92	ret = drm_dev_register(&qdev->ddev, ent->driver_data);
 93	if (ret)
 94		goto modeset_cleanup;
 95
 96	return 0;
 97
 98modeset_cleanup:
 99	qxl_modeset_fini(qdev);
100unload:
101	qxl_device_fini(qdev);
102disable_pci:
103	pci_disable_device(pdev);
104free_dev:
105	kfree(qdev);
106	return ret;
107}
108
109static void
110qxl_pci_remove(struct pci_dev *pdev)
111{
112	struct drm_device *dev = pci_get_drvdata(pdev);
113	struct qxl_device *qdev = dev->dev_private;
114
115	drm_dev_unregister(dev);
116
117	qxl_modeset_fini(qdev);
118	qxl_device_fini(qdev);
119
120	dev->dev_private = NULL;
121	kfree(qdev);
122	drm_dev_unref(dev);
123}
124
125static const struct file_operations qxl_fops = {
126	.owner = THIS_MODULE,
127	.open = drm_open,
128	.release = drm_release,
129	.unlocked_ioctl = drm_ioctl,
130	.poll = drm_poll,
131	.read = drm_read,
132	.mmap = qxl_mmap,
133};
134
135static int qxl_drm_freeze(struct drm_device *dev)
136{
137	struct pci_dev *pdev = dev->pdev;
138	struct qxl_device *qdev = dev->dev_private;
139	struct drm_crtc *crtc;
140
141	drm_kms_helper_poll_disable(dev);
142
143	console_lock();
144	qxl_fbdev_set_suspend(qdev, 1);
145	console_unlock();
146
147	/* unpin the front buffers */
148	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
149		const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
150		if (crtc->enabled)
151			(*crtc_funcs->disable)(crtc);
152	}
153
154	qxl_destroy_monitors_object(qdev);
155	qxl_surf_evict(qdev);
156	qxl_vram_evict(qdev);
157
158	while (!qxl_check_idle(qdev->command_ring));
159	while (!qxl_check_idle(qdev->release_ring))
160		qxl_queue_garbage_collect(qdev, 1);
161
162	pci_save_state(pdev);
163
164	return 0;
165}
166
167static int qxl_drm_resume(struct drm_device *dev, bool thaw)
168{
169	struct qxl_device *qdev = dev->dev_private;
170
171	qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
172	if (!thaw) {
173		qxl_reinit_memslots(qdev);
174		qxl_ring_init_hdr(qdev->release_ring);
175	}
176
177	qxl_create_monitors_object(qdev);
178	drm_helper_resume_force_mode(dev);
179
180	console_lock();
181	qxl_fbdev_set_suspend(qdev, 0);
182	console_unlock();
183
184	drm_kms_helper_poll_enable(dev);
185	return 0;
186}
187
188static int qxl_pm_suspend(struct device *dev)
189{
190	struct pci_dev *pdev = to_pci_dev(dev);
191	struct drm_device *drm_dev = pci_get_drvdata(pdev);
192	int error;
193
194	error = qxl_drm_freeze(drm_dev);
195	if (error)
196		return error;
197
198	pci_disable_device(pdev);
199	pci_set_power_state(pdev, PCI_D3hot);
200	return 0;
201}
202
203static int qxl_pm_resume(struct device *dev)
204{
205	struct pci_dev *pdev = to_pci_dev(dev);
206	struct drm_device *drm_dev = pci_get_drvdata(pdev);
207
208	pci_set_power_state(pdev, PCI_D0);
209	pci_restore_state(pdev);
210	if (pci_enable_device(pdev)) {
211		return -EIO;
212	}
213
214	return qxl_drm_resume(drm_dev, false);
215}
216
217static int qxl_pm_thaw(struct device *dev)
218{
219	struct pci_dev *pdev = to_pci_dev(dev);
220	struct drm_device *drm_dev = pci_get_drvdata(pdev);
221
222	return qxl_drm_resume(drm_dev, true);
223}
224
225static int qxl_pm_freeze(struct device *dev)
226{
227	struct pci_dev *pdev = to_pci_dev(dev);
228	struct drm_device *drm_dev = pci_get_drvdata(pdev);
229
230	return qxl_drm_freeze(drm_dev);
231}
232
233static int qxl_pm_restore(struct device *dev)
234{
235	struct pci_dev *pdev = to_pci_dev(dev);
236	struct drm_device *drm_dev = pci_get_drvdata(pdev);
237	struct qxl_device *qdev = drm_dev->dev_private;
238
239	qxl_io_reset(qdev);
240	return qxl_drm_resume(drm_dev, false);
241}
242
243static const struct dev_pm_ops qxl_pm_ops = {
244	.suspend = qxl_pm_suspend,
245	.resume = qxl_pm_resume,
246	.freeze = qxl_pm_freeze,
247	.thaw = qxl_pm_thaw,
248	.poweroff = qxl_pm_freeze,
249	.restore = qxl_pm_restore,
250};
251static struct pci_driver qxl_pci_driver = {
252	 .name = DRIVER_NAME,
253	 .id_table = pciidlist,
254	 .probe = qxl_pci_probe,
255	 .remove = qxl_pci_remove,
256	 .driver.pm = &qxl_pm_ops,
257};
258
259static struct drm_driver qxl_driver = {
260	.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
261			   DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
262			   DRIVER_ATOMIC,
263
264	.dumb_create = qxl_mode_dumb_create,
265	.dumb_map_offset = qxl_mode_dumb_mmap,
266#if defined(CONFIG_DEBUG_FS)
267	.debugfs_init = qxl_debugfs_init,
268#endif
269	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
270	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
271	.gem_prime_export = drm_gem_prime_export,
272	.gem_prime_import = drm_gem_prime_import,
273	.gem_prime_pin = qxl_gem_prime_pin,
274	.gem_prime_unpin = qxl_gem_prime_unpin,
275	.gem_prime_get_sg_table = qxl_gem_prime_get_sg_table,
276	.gem_prime_import_sg_table = qxl_gem_prime_import_sg_table,
277	.gem_prime_vmap = qxl_gem_prime_vmap,
278	.gem_prime_vunmap = qxl_gem_prime_vunmap,
279	.gem_prime_mmap = qxl_gem_prime_mmap,
280	.gem_free_object_unlocked = qxl_gem_object_free,
281	.gem_open_object = qxl_gem_object_open,
282	.gem_close_object = qxl_gem_object_close,
283	.fops = &qxl_fops,
284	.ioctls = qxl_ioctls,
285	.irq_handler = qxl_irq_handler,
286	.name = DRIVER_NAME,
287	.desc = DRIVER_DESC,
288	.date = DRIVER_DATE,
289	.major = 0,
290	.minor = 1,
291	.patchlevel = 0,
292};
293
294static int __init qxl_init(void)
295{
296	if (vgacon_text_force() && qxl_modeset == -1)
297		return -EINVAL;
298
299	if (qxl_modeset == 0)
300		return -EINVAL;
301	qxl_driver.num_ioctls = qxl_max_ioctls;
302	return pci_register_driver(&qxl_pci_driver);
303}
304
305static void __exit qxl_exit(void)
306{
307	pci_unregister_driver(&qxl_pci_driver);
308}
309
310module_init(qxl_init);
311module_exit(qxl_exit);
312
313MODULE_AUTHOR(DRIVER_AUTHOR);
314MODULE_DESCRIPTION(DRIVER_DESC);
315MODULE_LICENSE("GPL and additional rights");