nouveau_pci.c revision 1.19 
1/*	$NetBSD: nouveau_pci.c,v 1.19 2018/08/27 14:12:29 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 1.19 2018/08/27 14:12:29 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#include <core/pci.h>
45
46#include "nouveau_drm.h"
47#include "nouveau_pci.h"
48
49MODULE(MODULE_CLASS_DRIVER, nouveau_pci, "nouveau,drmkms_pci");
50
51SIMPLEQ_HEAD(nouveau_pci_task_head, nouveau_pci_task);
52
53struct nouveau_pci_softc {
54	device_t		sc_dev;
55	enum {
56		NOUVEAU_TASK_ATTACH,
57		NOUVEAU_TASK_WORKQUEUE,
58	}			sc_task_state;
59	union {
60		struct workqueue		*workqueue;
61		struct nouveau_pci_task_head	attach;
62	}			sc_task_u;
63	struct drm_device	*sc_drm_dev;
64	struct pci_dev		sc_pci_dev;
65	struct nvkm_device	*sc_nv_dev;
66};
67
68static int	nouveau_pci_match(device_t, cfdata_t, void *);
69static void	nouveau_pci_attach(device_t, device_t, void *);
70static int	nouveau_pci_detach(device_t, int);
71
72static bool	nouveau_pci_suspend(device_t, const pmf_qual_t *);
73static bool	nouveau_pci_resume(device_t, const pmf_qual_t *);
74
75static void	nouveau_pci_task_work(struct work *, void *);
76
77CFATTACH_DECL_NEW(nouveau_pci, sizeof(struct nouveau_pci_softc),
78    nouveau_pci_match, nouveau_pci_attach, nouveau_pci_detach, NULL);
79
80/* Kludge to get this from nouveau_drm.c.  */
81extern struct drm_driver *const nouveau_drm_driver_pci;
82
83static int
84nouveau_pci_match(device_t parent, cfdata_t match, void *aux)
85{
86	const struct pci_attach_args *const pa = aux;
87	struct pci_dev pdev;
88	struct nvkm_device *device;
89	int ret;
90
91	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NVIDIA &&
92	    PCI_VENDOR(pa->pa_id) != PCI_VENDOR_NVIDIA_SGS)
93		return 0;
94
95	if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY)
96		return 0;
97
98#define IS_BETWEEN(x,y) \
99	(PCI_PRODUCT(pa->pa_id) >= (x) && PCI_PRODUCT(pa->pa_id) <= (y))
100	/*
101	 * NetBSD drm2 needs missing-so-far firmware for Maxwell-based cards:
102	 *   0x1380-0x13bf 	GM107
103	 */
104	if (IS_BETWEEN(0x1380, 0x13bf))
105		return 0;
106
107	/*
108	 * NetBSD drm2 doesn't support Pascal-based cards:
109	 *   0x1580-0x15ff 	GP100
110	 *   0x1b00-0x1b7f 	GP102
111	 *   0x1b80-0x1bff 	GP104
112	 *   0x1c00-0x1c7f 	GP106
113	 *   0x1c80-0x1cff 	GP107
114	 *   0x1d00-0x1d7f 	GP108
115	 *   0x1d80-0x1dff 	GV100
116	 */
117
118	if (IS_BETWEEN(0x1580, 0x15ff) ||
119	    IS_BETWEEN(0x1b00, 0x1b7f) ||
120	    IS_BETWEEN(0x1b80, 0x1bff) ||
121	    IS_BETWEEN(0x1c00, 0x1c7f) ||
122	    IS_BETWEEN(0x1c80, 0x1cff) ||
123	    IS_BETWEEN(0x1d00, 0x1d7f) ||
124	    IS_BETWEEN(0x1d80, 0x1dff))
125		return 0;
126#undef IS_BETWEEN
127
128	linux_pci_dev_init(&pdev, NULL, parent, pa, 0);
129	ret = nvkm_device_pci_new(&pdev, NULL, "error", true, false, 0,
130	    &device);
131	if (ret == 0)		/* don't want to hang onto it */
132		nvkm_device_del(&device);
133	linux_pci_dev_destroy(&pdev);
134	if (ret)		/* failure */
135		return 0;
136
137	return 6;		/* XXX Beat genfb_pci...  */
138}
139
140extern char *nouveau_config;
141extern char *nouveau_debug;
142
143static void
144nouveau_pci_attach(device_t parent, device_t self, void *aux)
145{
146	struct nouveau_pci_softc *const sc = device_private(self);
147	const struct pci_attach_args *const pa = aux;
148	int error;
149
150	pci_aprint_devinfo(pa, NULL);
151
152	sc->sc_dev = self;
153
154	/* Initialize the Linux PCI device descriptor.  */
155	linux_pci_dev_init(&sc->sc_pci_dev, self, device_parent(self), pa, 0);
156
157	if (!pmf_device_register(self, &nouveau_pci_suspend,
158		&nouveau_pci_resume))
159		aprint_error_dev(self, "unable to establish power handler\n");
160
161	sc->sc_task_state = NOUVEAU_TASK_ATTACH;
162	SIMPLEQ_INIT(&sc->sc_task_u.attach);
163
164	/* XXX errno Linux->NetBSD */
165	error = -nvkm_device_pci_new(&sc->sc_pci_dev,
166	    nouveau_config, nouveau_debug, true, true, ~0ULL,
167	    &sc->sc_nv_dev);
168	if (error) {
169		aprint_error_dev(self, "unable to create nouveau device: %d\n",
170		    error);
171		return;
172	}
173
174	/* XXX errno Linux->NetBSD */
175	error = -drm_pci_attach(self, pa, &sc->sc_pci_dev,
176	    nouveau_drm_driver_pci, 0, &sc->sc_drm_dev);
177	if (error) {
178		aprint_error_dev(self, "unable to attach drm: %d\n", error);
179		return;
180	}
181
182	while (!SIMPLEQ_EMPTY(&sc->sc_task_u.attach)) {
183		struct nouveau_pci_task *const task =
184		    SIMPLEQ_FIRST(&sc->sc_task_u.attach);
185
186		SIMPLEQ_REMOVE_HEAD(&sc->sc_task_u.attach, nt_u.queue);
187		(*task->nt_fn)(task);
188	}
189
190	sc->sc_task_state = NOUVEAU_TASK_WORKQUEUE;
191	error = workqueue_create(&sc->sc_task_u.workqueue, "nouveau_pci",
192	    &nouveau_pci_task_work, NULL, PRI_NONE, IPL_NONE, WQ_MPSAFE);
193	if (error) {
194		aprint_error_dev(self, "unable to create workqueue: %d\n",
195		    error);
196		sc->sc_task_u.workqueue = NULL;
197		return;
198	}
199}
200
201static int
202nouveau_pci_detach(device_t self, int flags)
203{
204	struct nouveau_pci_softc *const sc = device_private(self);
205	int error;
206
207	/* XXX Check for in-use before tearing it all down...  */
208	error = config_detach_children(self, flags);
209	if (error)
210		return error;
211
212	if (sc->sc_task_state == NOUVEAU_TASK_ATTACH)
213		goto out0;
214	if (sc->sc_task_u.workqueue != NULL) {
215		workqueue_destroy(sc->sc_task_u.workqueue);
216		sc->sc_task_u.workqueue = NULL;
217	}
218
219	if (sc->sc_nv_dev == NULL)
220		goto out0;
221
222	if (sc->sc_drm_dev == NULL)
223		goto out1;
224	/* XXX errno Linux->NetBSD */
225	error = -drm_pci_detach(sc->sc_drm_dev, flags);
226	if (error)
227		/* XXX Kinda too late to fail now...  */
228		return error;
229	sc->sc_drm_dev = NULL;
230
231out1:	nvkm_device_del(&sc->sc_nv_dev);
232out0:	linux_pci_dev_destroy(&sc->sc_pci_dev);
233	pmf_device_deregister(self);
234	return 0;
235}
236
237/*
238 * XXX Synchronize with nouveau_do_suspend in nouveau_drm.c.
239 */
240static bool
241nouveau_pci_suspend(device_t self, const pmf_qual_t *qual __unused)
242{
243	struct nouveau_pci_softc *const sc = device_private(self);
244
245	return nouveau_pmops_suspend(sc->sc_drm_dev) == 0;
246}
247
248static bool
249nouveau_pci_resume(device_t self, const pmf_qual_t *qual)
250{
251	struct nouveau_pci_softc *const sc = device_private(self);
252
253	return nouveau_pmops_resume(sc->sc_drm_dev) == 0;
254}
255
256static void
257nouveau_pci_task_work(struct work *work, void *cookie __unused)
258{
259	struct nouveau_pci_task *const task = container_of(work,
260	    struct nouveau_pci_task, nt_u.work);
261
262	(*task->nt_fn)(task);
263}
264
265int
266nouveau_pci_task_schedule(device_t self, struct nouveau_pci_task *task)
267{
268	struct nouveau_pci_softc *const sc = device_private(self);
269
270	switch (sc->sc_task_state) {
271	case NOUVEAU_TASK_ATTACH:
272		SIMPLEQ_INSERT_TAIL(&sc->sc_task_u.attach, task, nt_u.queue);
273		return 0;
274	case NOUVEAU_TASK_WORKQUEUE:
275		if (sc->sc_task_u.workqueue == NULL) {
276			aprint_error_dev(self, "unable to schedule task\n");
277			return EIO;
278		}
279		workqueue_enqueue(sc->sc_task_u.workqueue, &task->nt_u.work,
280		    NULL);
281		return 0;
282	default:
283		panic("nouveau in invalid task state: %d\n",
284		    (int)sc->sc_task_state);
285	}
286}
287
288static int
289nouveau_pci_modcmd(modcmd_t cmd, void *arg __unused)
290{
291	int error;
292
293	switch (cmd) {
294	case MODULE_CMD_INIT:
295		error = drm_pci_init(nouveau_drm_driver_pci, NULL);
296		if (error) {
297			aprint_error("nouveau_pci: failed to init: %d\n",
298			    error);
299			return error;
300		}
301#if 0		/* XXX nouveau acpi */
302		nouveau_register_dsm_handler();
303#endif
304		break;
305	case MODULE_CMD_FINI:
306#if 0		/* XXX nouveau acpi */
307		nouveau_unregister_dsm_handler();
308#endif
309		drm_pci_exit(nouveau_drm_driver_pci, NULL);
310		break;
311	default:
312		return ENOTTY;
313	}
314
315	return 0;
316}
317