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 "qxl_drv.h"
 32#include <linux/console.h>
 33#include <linux/module.h>
 34#include <linux/pci.h>
 35
 36#include <drm/drm.h>
 37#include <drm/drm_drv.h>
 38#include <drm/drm_file.h>
 39#include <drm/drm_modeset_helper.h>
 40#include <drm/drm_prime.h>
 41#include <drm/drm_probe_helper.h>
 42
 43#include "qxl_object.h"
 44
 45static const struct pci_device_id pciidlist[] = {
 46	{ 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8,
 47	  0xffff00, 0 },
 48	{ 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_OTHER << 8,
 49	  0xffff00, 0 },
 50	{ 0, 0, 0 },
 51};
 52MODULE_DEVICE_TABLE(pci, pciidlist);
 53
 54static int qxl_modeset = -1;
 55int qxl_num_crtc = 4;
 56
 57MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
 58module_param_named(modeset, qxl_modeset, int, 0400);
 59
 60MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)");
 61module_param_named(num_heads, qxl_num_crtc, int, 0400);
 62
 63static struct drm_driver qxl_driver;
 64static struct pci_driver qxl_pci_driver;
 65
 66static bool is_vga(struct pci_dev *pdev)
 67{
 68	return pdev->class == PCI_CLASS_DISPLAY_VGA << 8;
 69}
 70
 71static int
 72qxl_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 = kzalloc(sizeof(struct qxl_device), GFP_KERNEL);
 84	if (!qdev)
 85		return -ENOMEM;
 86
 87	ret = pci_enable_device(pdev);
 88	if (ret)
 89		goto free_dev;
 90
 91	ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, 0, "qxl");
 92	if (ret)
 93		goto disable_pci;
 94
 95	if (is_vga(pdev)) {
 96		ret = vga_get_interruptible(pdev, VGA_RSRC_LEGACY_IO);
 97		if (ret) {
 98			DRM_ERROR("can't get legacy vga ioports\n");
 99			goto disable_pci;
100		}
101	}
102
103	ret = qxl_device_init(qdev, &qxl_driver, pdev);
104	if (ret)
105		goto put_vga;
106
107	ret = qxl_modeset_init(qdev);
108	if (ret)
109		goto unload;
110
111	drm_kms_helper_poll_init(&qdev->ddev);
112
113	/* Complete initialization. */
114	ret = drm_dev_register(&qdev->ddev, ent->driver_data);
115	if (ret)
116		goto modeset_cleanup;
117
118	drm_fbdev_generic_setup(&qdev->ddev, 32);
119	return 0;
120
121modeset_cleanup:
122	qxl_modeset_fini(qdev);
123unload:
124	qxl_device_fini(qdev);
125put_vga:
126	if (is_vga(pdev))
127		vga_put(pdev, VGA_RSRC_LEGACY_IO);
128disable_pci:
129	pci_disable_device(pdev);
130free_dev:
131	kfree(qdev);
132	return ret;
133}
134
135static void
136qxl_pci_remove(struct pci_dev *pdev)
137{
138	struct drm_device *dev = pci_get_drvdata(pdev);
139	struct qxl_device *qdev = dev->dev_private;
140
141	drm_dev_unregister(dev);
142
143	qxl_modeset_fini(qdev);
144	qxl_device_fini(qdev);
145	if (is_vga(pdev))
146		vga_put(pdev, VGA_RSRC_LEGACY_IO);
147
148	dev->dev_private = NULL;
149	kfree(qdev);
150	drm_dev_put(dev);
151}
152
153static const struct file_operations qxl_fops = {
154	.owner = THIS_MODULE,
155	.open = drm_open,
156	.release = drm_release,
157	.unlocked_ioctl = drm_ioctl,
158	.poll = drm_poll,
159	.read = drm_read,
160	.mmap = qxl_mmap,
161};
162
163static int qxl_drm_freeze(struct drm_device *dev)
164{
165	struct pci_dev *pdev = dev->pdev;
166	struct qxl_device *qdev = dev->dev_private;
167	int ret;
168
169	ret = drm_mode_config_helper_suspend(dev);
170	if (ret)
171		return ret;
172
173	qxl_destroy_monitors_object(qdev);
174	qxl_surf_evict(qdev);
175	qxl_vram_evict(qdev);
176
177	while (!qxl_check_idle(qdev->command_ring));
178	while (!qxl_check_idle(qdev->release_ring))
179		qxl_queue_garbage_collect(qdev, 1);
180
181	pci_save_state(pdev);
182
183	return 0;
184}
185
186static int qxl_drm_resume(struct drm_device *dev, bool thaw)
187{
188	struct qxl_device *qdev = dev->dev_private;
189
190	qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
191	if (!thaw) {
192		qxl_reinit_memslots(qdev);
193		qxl_ring_init_hdr(qdev->release_ring);
194	}
195
196	qxl_create_monitors_object(qdev);
197	return drm_mode_config_helper_resume(dev);
198}
199
200static int qxl_pm_suspend(struct device *dev)
201{
202	struct pci_dev *pdev = to_pci_dev(dev);
203	struct drm_device *drm_dev = pci_get_drvdata(pdev);
204	int error;
205
206	error = qxl_drm_freeze(drm_dev);
207	if (error)
208		return error;
209
210	pci_disable_device(pdev);
211	pci_set_power_state(pdev, PCI_D3hot);
212	return 0;
213}
214
215static int qxl_pm_resume(struct device *dev)
216{
217	struct pci_dev *pdev = to_pci_dev(dev);
218	struct drm_device *drm_dev = pci_get_drvdata(pdev);
219
220	pci_set_power_state(pdev, PCI_D0);
221	pci_restore_state(pdev);
222	if (pci_enable_device(pdev)) {
223		return -EIO;
224	}
225
226	return qxl_drm_resume(drm_dev, false);
227}
228
229static int qxl_pm_thaw(struct device *dev)
230{
231	struct drm_device *drm_dev = dev_get_drvdata(dev);
232
233	return qxl_drm_resume(drm_dev, true);
234}
235
236static int qxl_pm_freeze(struct device *dev)
237{
238	struct drm_device *drm_dev = dev_get_drvdata(dev);
239
240	return qxl_drm_freeze(drm_dev);
241}
242
243static int qxl_pm_restore(struct device *dev)
244{
245	struct pci_dev *pdev = to_pci_dev(dev);
246	struct drm_device *drm_dev = pci_get_drvdata(pdev);
247	struct qxl_device *qdev = drm_dev->dev_private;
248
249	qxl_io_reset(qdev);
250	return qxl_drm_resume(drm_dev, false);
251}
252
253static const struct dev_pm_ops qxl_pm_ops = {
254	.suspend = qxl_pm_suspend,
255	.resume = qxl_pm_resume,
256	.freeze = qxl_pm_freeze,
257	.thaw = qxl_pm_thaw,
258	.poweroff = qxl_pm_freeze,
259	.restore = qxl_pm_restore,
260};
261static struct pci_driver qxl_pci_driver = {
262	 .name = DRIVER_NAME,
263	 .id_table = pciidlist,
264	 .probe = qxl_pci_probe,
265	 .remove = qxl_pci_remove,
266	 .driver.pm = &qxl_pm_ops,
267};
268
269static struct drm_driver qxl_driver = {
270	.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
271
272	.dumb_create = qxl_mode_dumb_create,
273	.dumb_map_offset = qxl_mode_dumb_mmap,
274#if defined(CONFIG_DEBUG_FS)
275	.debugfs_init = qxl_debugfs_init,
276#endif
277	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
278	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
279	.gem_prime_pin = qxl_gem_prime_pin,
280	.gem_prime_unpin = qxl_gem_prime_unpin,
281	.gem_prime_get_sg_table = qxl_gem_prime_get_sg_table,
282	.gem_prime_import_sg_table = qxl_gem_prime_import_sg_table,
283	.gem_prime_vmap = qxl_gem_prime_vmap,
284	.gem_prime_vunmap = qxl_gem_prime_vunmap,
285	.gem_prime_mmap = qxl_gem_prime_mmap,
286	.gem_free_object_unlocked = qxl_gem_object_free,
287	.gem_open_object = qxl_gem_object_open,
288	.gem_close_object = qxl_gem_object_close,
289	.fops = &qxl_fops,
290	.ioctls = qxl_ioctls,
291	.irq_handler = qxl_irq_handler,
292	.name = DRIVER_NAME,
293	.desc = DRIVER_DESC,
294	.date = DRIVER_DATE,
295	.major = 0,
296	.minor = 1,
297	.patchlevel = 0,
298};
299
300static int __init qxl_init(void)
301{
302	if (vgacon_text_force() && qxl_modeset == -1)
303		return -EINVAL;
304
305	if (qxl_modeset == 0)
306		return -EINVAL;
307	qxl_driver.num_ioctls = qxl_max_ioctls;
308	return pci_register_driver(&qxl_pci_driver);
309}
310
311static void __exit qxl_exit(void)
312{
313	pci_unregister_driver(&qxl_pci_driver);
314}
315
316module_init(qxl_init);
317module_exit(qxl_exit);
318
319MODULE_AUTHOR(DRIVER_AUTHOR);
320MODULE_DESCRIPTION(DRIVER_DESC);
321MODULE_LICENSE("GPL and additional rights");