nouveau_pci.c revision 1.12 
1/*	$NetBSD: nouveau_pci.c,v 1.12 2018/08/27 06:41:35 riastradh Exp $	*/
2
3/*-
4 * Copyright (c) 2015 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Taylor R. Campbell.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: nouveau_pci.c,v 1.12 2018/08/27 06:41:35 riastradh Exp $");
34
35#include <sys/types.h>
36#include <sys/device.h>
37#include <sys/queue.h>
38#include <sys/workqueue.h>
39#include <sys/module.h>
40
41#include <drm/drmP.h>
42
43#include <core/device.h>
44
45#include "nouveau_drm.h"
46#include "nouveau_pci.h"
47
48MODULE(MODULE_CLASS_DRIVER, nouveau_pci, "nouveau,drmkms_pci");
49
50SIMPLEQ_HEAD(nouveau_pci_task_head, nouveau_pci_task);
51
52struct nouveau_pci_softc {
53	device_t		sc_dev;
54	enum {
55		NOUVEAU_TASK_ATTACH,
56		NOUVEAU_TASK_WORKQUEUE,
57	}			sc_task_state;
58	union {
59		struct workqueue		*workqueue;
60		struct nouveau_pci_task_head	attach;
61	}			sc_task_u;
62	struct drm_device	*sc_drm_dev;
63	struct pci_dev		sc_pci_dev;
64	struct nvkm_device	*sc_nv_dev;
65};
66
67static int	nouveau_pci_match(device_t, cfdata_t, void *);
68static void	nouveau_pci_attach(device_t, device_t, void *);
69static int	nouveau_pci_detach(device_t, int);
70
71static bool	nouveau_pci_suspend(device_t, const pmf_qual_t *);
72static bool	nouveau_pci_resume(device_t, const pmf_qual_t *);
73
74static void	nouveau_pci_task_work(struct work *, void *);
75
76CFATTACH_DECL_NEW(nouveau_pci, sizeof(struct nouveau_pci_softc),
77    nouveau_pci_match, nouveau_pci_attach, nouveau_pci_detach, NULL);
78
79/* Kludge to get this from nouveau_drm.c.  */
80extern struct drm_driver *const nouveau_drm_driver;
81
82static int
83nouveau_pci_match(device_t parent, cfdata_t match, void *aux)
84{
85	const struct pci_attach_args *const pa = aux;
86
87	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NVIDIA &&
88	    PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NVIDIA_SGS)
89		return 0;
90
91	if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY)
92		return 0;
93
94#define IS_BETWEEN(x,y) \
95	(PCI_PRODUCT(pa->pa_id) >= (x) && PCI_PRODUCT(pa->pa_id) <= (y))
96	/*
97	 * NetBSD drm2 needs missing-so-far firmware for Maxwell-based cards:
98	 *   0x1380-0x13bf 	GM107
99	 */
100	if (IS_BETWEEN(0x1380, 0x13bf))
101		return 0;
102
103	/*
104	 * NetBSD drm2 doesn't support Pascal-based cards:
105	 *   0x1580-0x15ff 	GP100
106	 *   0x1b00-0x1b7f 	GP102
107	 *   0x1b80-0x1bff 	GP104
108	 *   0x1c00-0x1c7f 	GP106
109	 *   0x1c80-0x1cff 	GP107
110	 *   0x1d00-0x1d7f 	GP108
111	 *   0x1d80-0x1dff 	GV100
112	 */
113
114	if (IS_BETWEEN(0x1580, 0x15ff) ||
115	    IS_BETWEEN(0x1b00, 0x1b7f) ||
116	    IS_BETWEEN(0x1b80, 0x1bff) ||
117	    IS_BETWEEN(0x1c00, 0x1c7f) ||
118	    IS_BETWEEN(0x1c80, 0x1cff) ||
119	    IS_BETWEEN(0x1d00, 0x1d7f) ||
120	    IS_BETWEEN(0x1d80, 0x1dff))
121		return 0;
122#undef IS_BETWEEN
123
124	return 6;		/* XXX Beat genfb_pci...  */
125}
126
127extern char *nouveau_config;
128extern char *nouveau_debug;
129
130static void
131nouveau_pci_attach(device_t parent, device_t self, void *aux)
132{
133	struct nouveau_pci_softc *const sc = device_private(self);
134	const struct pci_attach_args *const pa = aux;
135	uint64_t devname;
136	int error;
137
138	pci_aprint_devinfo(pa, NULL);
139
140	sc->sc_dev = self;
141
142	if (!pmf_device_register(self, &nouveau_pci_suspend,
143		&nouveau_pci_resume))
144		aprint_error_dev(self, "unable to establish power handler\n");
145
146	sc->sc_task_state = NOUVEAU_TASK_ATTACH;
147	SIMPLEQ_INIT(&sc->sc_task_u.attach);
148
149	devname = (uint64_t)device_unit(device_parent(self)) << 32;
150	devname |= pa->pa_bus << 16;
151	/* XXX errno Linux->NetBSD */
152	error = -nvkm_device_pci_new(&sc->sc_pci_dev,
153	    nouveau_config, nouveau_debug, true, true, ~0ULL,
154	    &sc->sc_nv_dev);
155	if (error) {
156		aprint_error_dev(self, "unable to create nouveau device: %d\n",
157		    error);
158		return;
159	}
160
161	/* XXX errno Linux->NetBSD */
162	error = -drm_pci_attach(self, pa, &sc->sc_pci_dev, nouveau_drm_driver,
163	    0, &sc->sc_drm_dev);
164	if (error) {
165		aprint_error_dev(self, "unable to attach drm: %d\n", error);
166		return;
167	}
168
169	while (!SIMPLEQ_EMPTY(&sc->sc_task_u.attach)) {
170		struct nouveau_pci_task *const task =
171		    SIMPLEQ_FIRST(&sc->sc_task_u.attach);
172
173		SIMPLEQ_REMOVE_HEAD(&sc->sc_task_u.attach, nt_u.queue);
174		(*task->nt_fn)(task);
175	}
176
177	sc->sc_task_state = NOUVEAU_TASK_WORKQUEUE;
178	error = workqueue_create(&sc->sc_task_u.workqueue, "nouveau_pci",
179	    &nouveau_pci_task_work, NULL, PRI_NONE, IPL_NONE, WQ_MPSAFE);
180	if (error) {
181		aprint_error_dev(self, "unable to create workqueue: %d\n",
182		    error);
183		sc->sc_task_u.workqueue = NULL;
184		return;
185	}
186}
187
188static int
189nouveau_pci_detach(device_t self, int flags)
190{
191	struct nouveau_pci_softc *const sc = device_private(self);
192	int error;
193
194	/* XXX Check for in-use before tearing it all down...  */
195	error = config_detach_children(self, flags);
196	if (error)
197		return error;
198
199	if (sc->sc_task_state == NOUVEAU_TASK_ATTACH)
200		goto out0;
201	if (sc->sc_task_u.workqueue != NULL) {
202		workqueue_destroy(sc->sc_task_u.workqueue);
203		sc->sc_task_u.workqueue = NULL;
204	}
205
206	if (sc->sc_nv_dev == NULL)
207		goto out0;
208
209	if (sc->sc_drm_dev == NULL)
210		goto out1;
211	/* XXX errno Linux->NetBSD */
212	error = -drm_pci_detach(sc->sc_drm_dev, flags);
213	if (error)
214		/* XXX Kinda too late to fail now...  */
215		return error;
216	sc->sc_drm_dev = NULL;
217
218out1:	nouveau_object_ref(NULL, (void *)&sc->sc_nv_dev);
219out0:	pmf_device_deregister(self);
220	return 0;
221}
222
223/*
224 * XXX Synchronize with nouveau_do_suspend in nouveau_drm.c.
225 */
226static bool
227nouveau_pci_suspend(device_t self, const pmf_qual_t *qual __unused)
228{
229	struct nouveau_pci_softc *const sc = device_private(self);
230
231	return nouveau_pmops_suspend(sc->sc_drm_dev) == 0;
232}
233
234static bool
235nouveau_pci_resume(device_t self, const pmf_qual_t *qual)
236{
237	struct nouveau_pci_softc *const sc = device_private(self);
238
239	return nouveau_pmops_resume(sc->sc_drm_dev) == 0;
240}
241
242static void
243nouveau_pci_task_work(struct work *work, void *cookie __unused)
244{
245	struct nouveau_pci_task *const task = container_of(work,
246	    struct nouveau_pci_task, nt_u.work);
247
248	(*task->nt_fn)(task);
249}
250
251int
252nouveau_pci_task_schedule(device_t self, struct nouveau_pci_task *task)
253{
254	struct nouveau_pci_softc *const sc = device_private(self);
255
256	switch (sc->sc_task_state) {
257	case NOUVEAU_TASK_ATTACH:
258		SIMPLEQ_INSERT_TAIL(&sc->sc_task_u.attach, task, nt_u.queue);
259		return 0;
260	case NOUVEAU_TASK_WORKQUEUE:
261		if (sc->sc_task_u.workqueue == NULL) {
262			aprint_error_dev(self, "unable to schedule task\n");
263			return EIO;
264		}
265		workqueue_enqueue(sc->sc_task_u.workqueue, &task->nt_u.work,
266		    NULL);
267		return 0;
268	default:
269		panic("nouveau in invalid task state: %d\n",
270		    (int)sc->sc_task_state);
271	}
272}
273
274static int
275nouveau_pci_modcmd(modcmd_t cmd, void *arg __unused)
276{
277	int error;
278
279	switch (cmd) {
280	case MODULE_CMD_INIT:
281		error = drm_pci_init(nouveau_drm_driver, NULL);
282		if (error) {
283			aprint_error("nouveau_pci: failed to init: %d\n",
284			    error);
285			return error;
286		}
287#if 0		/* XXX nouveau acpi */
288		nouveau_register_dsm_handler();
289#endif
290		break;
291	case MODULE_CMD_FINI:
292#if 0		/* XXX nouveau acpi */
293		nouveau_unregister_dsm_handler();
294#endif
295		drm_pci_exit(nouveau_drm_driver, NULL);
296		break;
297	default:
298		return ENOTTY;
299	}
300
301	return 0;
302}
303