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_atomic_helper.h>
38#include <drm/drm_drv.h>
39#include <drm/drm_file.h>
40#include <drm/drm_modeset_helper.h>
41#include <drm/drm_prime.h>
42#include <drm/drm_probe_helper.h>
43
44#include "qxl_object.h"
45
46static const struct pci_device_id pciidlist[] = {
47	{ 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA << 8,
48	  0xffff00, 0 },
49	{ 0x1b36, 0x100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_OTHER << 8,
50	  0xffff00, 0 },
51	{ 0, 0, 0 },
52};
53MODULE_DEVICE_TABLE(pci, pciidlist);
54
55static int qxl_modeset = -1;
56int qxl_num_crtc = 4;
57
58MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
59module_param_named(modeset, qxl_modeset, int, 0400);
60
61MODULE_PARM_DESC(num_heads, "Number of virtual crtcs to expose (default 4)");
62module_param_named(num_heads, qxl_num_crtc, int, 0400);
63
64static struct drm_driver qxl_driver;
65static struct pci_driver qxl_pci_driver;
66
67static bool is_vga(struct pci_dev *pdev)
68{
69	return pdev->class == PCI_CLASS_DISPLAY_VGA << 8;
70}
71
72static int
73qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
74{
75	struct qxl_device *qdev;
76	int ret;
77
78	if (pdev->revision < 4) {
79		DRM_ERROR("qxl too old, doesn't support client_monitors_config,"
80			  " use xf86-video-qxl in user mode");
81		return -EINVAL; /* TODO: ENODEV ? */
82	}
83
84	qdev = devm_drm_dev_alloc(&pdev->dev, &qxl_driver,
85				  struct qxl_device, ddev);
86	if (IS_ERR(qdev)) {
87		pr_err("Unable to init drm dev");
88		return -ENOMEM;
89	}
90
91	ret = pci_enable_device(pdev);
92	if (ret)
93		return ret;
94
95	ret = drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, "qxl");
96	if (ret)
97		goto disable_pci;
98
99	if (is_vga(pdev) && pdev->revision < 5) {
100		ret = vga_get_interruptible(pdev, VGA_RSRC_LEGACY_IO);
101		if (ret) {
102			DRM_ERROR("can't get legacy vga ioports\n");
103			goto disable_pci;
104		}
105	}
106
107	ret = qxl_device_init(qdev, pdev);
108	if (ret)
109		goto put_vga;
110
111	ret = qxl_modeset_init(qdev);
112	if (ret)
113		goto unload;
114
115	drm_kms_helper_poll_init(&qdev->ddev);
116
117	/* Complete initialization. */
118	ret = drm_dev_register(&qdev->ddev, ent->driver_data);
119	if (ret)
120		goto modeset_cleanup;
121
122	drm_fbdev_generic_setup(&qdev->ddev, 32);
123	return 0;
124
125modeset_cleanup:
126	qxl_modeset_fini(qdev);
127unload:
128	qxl_device_fini(qdev);
129put_vga:
130	if (is_vga(pdev) && pdev->revision < 5)
131		vga_put(pdev, VGA_RSRC_LEGACY_IO);
132disable_pci:
133	pci_disable_device(pdev);
134
135	return ret;
136}
137
138static void qxl_drm_release(struct drm_device *dev)
139{
140	struct qxl_device *qdev = to_qxl(dev);
141
142	/*
143	 * TODO: qxl_device_fini() call should be in qxl_pci_remove(),
144	 * reodering qxl_modeset_fini() + qxl_device_fini() calls is
145	 * non-trivial though.
146	 */
147	qxl_modeset_fini(qdev);
148	qxl_device_fini(qdev);
149}
150
151static void
152qxl_pci_remove(struct pci_dev *pdev)
153{
154	struct drm_device *dev = pci_get_drvdata(pdev);
155
156	drm_dev_unregister(dev);
157	drm_atomic_helper_shutdown(dev);
158	if (is_vga(pdev) && pdev->revision < 5)
159		vga_put(pdev, VGA_RSRC_LEGACY_IO);
160}
161
162DEFINE_DRM_GEM_FOPS(qxl_fops);
163
164static int qxl_drm_freeze(struct drm_device *dev)
165{
166	struct pci_dev *pdev = dev->pdev;
167	struct qxl_device *qdev = to_qxl(dev);
168	int ret;
169
170	ret = drm_mode_config_helper_suspend(dev);
171	if (ret)
172		return ret;
173
174	qxl_destroy_monitors_object(qdev);
175	qxl_surf_evict(qdev);
176	qxl_vram_evict(qdev);
177
178	while (!qxl_check_idle(qdev->command_ring));
179	while (!qxl_check_idle(qdev->release_ring))
180		qxl_queue_garbage_collect(qdev, 1);
181
182	pci_save_state(pdev);
183
184	return 0;
185}
186
187static int qxl_drm_resume(struct drm_device *dev, bool thaw)
188{
189	struct qxl_device *qdev = to_qxl(dev);
190
191	qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
192	if (!thaw) {
193		qxl_reinit_memslots(qdev);
194		qxl_ring_init_hdr(qdev->release_ring);
195	}
196
197	qxl_create_monitors_object(qdev);
198	return drm_mode_config_helper_resume(dev);
199}
200
201static int qxl_pm_suspend(struct device *dev)
202{
203	struct pci_dev *pdev = to_pci_dev(dev);
204	struct drm_device *drm_dev = pci_get_drvdata(pdev);
205	int error;
206
207	error = qxl_drm_freeze(drm_dev);
208	if (error)
209		return error;
210
211	pci_disable_device(pdev);
212	pci_set_power_state(pdev, PCI_D3hot);
213	return 0;
214}
215
216static int qxl_pm_resume(struct device *dev)
217{
218	struct pci_dev *pdev = to_pci_dev(dev);
219	struct drm_device *drm_dev = pci_get_drvdata(pdev);
220
221	pci_set_power_state(pdev, PCI_D0);
222	pci_restore_state(pdev);
223	if (pci_enable_device(pdev)) {
224		return -EIO;
225	}
226
227	return qxl_drm_resume(drm_dev, false);
228}
229
230static int qxl_pm_thaw(struct device *dev)
231{
232	struct drm_device *drm_dev = dev_get_drvdata(dev);
233
234	return qxl_drm_resume(drm_dev, true);
235}
236
237static int qxl_pm_freeze(struct device *dev)
238{
239	struct drm_device *drm_dev = dev_get_drvdata(dev);
240
241	return qxl_drm_freeze(drm_dev);
242}
243
244static int qxl_pm_restore(struct device *dev)
245{
246	struct pci_dev *pdev = to_pci_dev(dev);
247	struct drm_device *drm_dev = pci_get_drvdata(pdev);
248	struct qxl_device *qdev = to_qxl(drm_dev);
249
250	qxl_io_reset(qdev);
251	return qxl_drm_resume(drm_dev, false);
252}
253
254static const struct dev_pm_ops qxl_pm_ops = {
255	.suspend = qxl_pm_suspend,
256	.resume = qxl_pm_resume,
257	.freeze = qxl_pm_freeze,
258	.thaw = qxl_pm_thaw,
259	.poweroff = qxl_pm_freeze,
260	.restore = qxl_pm_restore,
261};
262static struct pci_driver qxl_pci_driver = {
263	 .name = DRIVER_NAME,
264	 .id_table = pciidlist,
265	 .probe = qxl_pci_probe,
266	 .remove = qxl_pci_remove,
267	 .driver.pm = &qxl_pm_ops,
268};
269
270static struct drm_driver qxl_driver = {
271	.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
272
273	.dumb_create = qxl_mode_dumb_create,
274	.dumb_map_offset = qxl_mode_dumb_mmap,
275#if defined(CONFIG_DEBUG_FS)
276	.debugfs_init = qxl_debugfs_init,
277#endif
278	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
279	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
280	.gem_prime_import_sg_table = qxl_gem_prime_import_sg_table,
281	.gem_prime_mmap = qxl_gem_prime_mmap,
282	.fops = &qxl_fops,
283	.ioctls = qxl_ioctls,
284	.irq_handler = qxl_irq_handler,
285	.name = DRIVER_NAME,
286	.desc = DRIVER_DESC,
287	.date = DRIVER_DATE,
288	.major = 0,
289	.minor = 1,
290	.patchlevel = 0,
291
292	.release = qxl_drm_release,
293};
294
295static int __init qxl_init(void)
296{
297	if (vgacon_text_force() && qxl_modeset == -1)
298		return -EINVAL;
299
300	if (qxl_modeset == 0)
301		return -EINVAL;
302	qxl_driver.num_ioctls = qxl_max_ioctls;
303	return pci_register_driver(&qxl_pci_driver);
304}
305
306static void __exit qxl_exit(void)
307{
308	pci_unregister_driver(&qxl_pci_driver);
309}
310
311module_init(qxl_init);
312module_exit(qxl_exit);
313
314MODULE_AUTHOR(DRIVER_AUTHOR);
315MODULE_DESCRIPTION(DRIVER_DESC);
316MODULE_LICENSE("GPL and additional rights");
317