1/*
2 * Copyright 2012 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 */
24#define nvkm_udevice(p) container_of((p), struct nvkm_udevice, object)
25#include "priv.h"
26#include "ctrl.h"
27
28#include <core/client.h>
29#include <subdev/fb.h>
30#include <subdev/instmem.h>
31#include <subdev/timer.h>
32
33#include <nvif/class.h>
34#include <nvif/unpack.h>
35
36struct nvkm_udevice {
37	struct nvkm_object object;
38	struct nvkm_device *device;
39};
40
41static int
42nvkm_udevice_info(struct nvkm_udevice *udev, void *data, u32 size)
43{
44	struct nvkm_object *object = &udev->object;
45	struct nvkm_device *device = udev->device;
46	struct nvkm_fb *fb = device->fb;
47	struct nvkm_instmem *imem = device->imem;
48	union {
49		struct nv_device_info_v0 v0;
50	} *args = data;
51	int ret;
52
53	nvif_ioctl(object, "device info size %d\n", size);
54	if (nvif_unpack(args->v0, 0, 0, false)) {
55		nvif_ioctl(object, "device info vers %d\n", args->v0.version);
56	} else
57		return ret;
58
59	switch (device->chipset) {
60	case 0x01a:
61	case 0x01f:
62	case 0x04c:
63	case 0x04e:
64	case 0x063:
65	case 0x067:
66	case 0x068:
67	case 0x0aa:
68	case 0x0ac:
69	case 0x0af:
70		args->v0.platform = NV_DEVICE_INFO_V0_IGP;
71		break;
72	default:
73		switch (device->type) {
74		case NVKM_DEVICE_PCI:
75			args->v0.platform = NV_DEVICE_INFO_V0_PCI;
76			break;
77		case NVKM_DEVICE_AGP:
78			args->v0.platform = NV_DEVICE_INFO_V0_AGP;
79			break;
80		case NVKM_DEVICE_PCIE:
81			args->v0.platform = NV_DEVICE_INFO_V0_PCIE;
82			break;
83		case NVKM_DEVICE_TEGRA:
84			args->v0.platform = NV_DEVICE_INFO_V0_SOC;
85			break;
86		default:
87			WARN_ON(1);
88			break;
89		}
90		break;
91	}
92
93	switch (device->card_type) {
94	case NV_04: args->v0.family = NV_DEVICE_INFO_V0_TNT; break;
95	case NV_10:
96	case NV_11: args->v0.family = NV_DEVICE_INFO_V0_CELSIUS; break;
97	case NV_20: args->v0.family = NV_DEVICE_INFO_V0_KELVIN; break;
98	case NV_30: args->v0.family = NV_DEVICE_INFO_V0_RANKINE; break;
99	case NV_40: args->v0.family = NV_DEVICE_INFO_V0_CURIE; break;
100	case NV_50: args->v0.family = NV_DEVICE_INFO_V0_TESLA; break;
101	case NV_C0: args->v0.family = NV_DEVICE_INFO_V0_FERMI; break;
102	case NV_E0: args->v0.family = NV_DEVICE_INFO_V0_KEPLER; break;
103	case GM100: args->v0.family = NV_DEVICE_INFO_V0_MAXWELL; break;
104	default:
105		args->v0.family = 0;
106		break;
107	}
108
109	args->v0.chipset  = device->chipset;
110	args->v0.revision = device->chiprev;
111	if (fb && fb->ram)
112		args->v0.ram_size = args->v0.ram_user = fb->ram->size;
113	else
114		args->v0.ram_size = args->v0.ram_user = 0;
115	if (imem && args->v0.ram_size > 0)
116		args->v0.ram_user = args->v0.ram_user - imem->reserved;
117
118	strncpy(args->v0.chip, device->chip->name, sizeof(args->v0.chip));
119	strncpy(args->v0.name, device->name, sizeof(args->v0.name));
120	return 0;
121}
122
123static int
124nvkm_udevice_time(struct nvkm_udevice *udev, void *data, u32 size)
125{
126	struct nvkm_device *device = udev->device;
127	union {
128		struct nv_device_time_v0 v0;
129	} *args = data;
130	int ret;
131
132	if (nvif_unpack(args->v0, 0, 0, false)) {
133		args->v0.time = nvkm_timer_read(device->timer);
134	}
135
136	return ret;
137}
138
139static int
140nvkm_udevice_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
141{
142	struct nvkm_udevice *udev = nvkm_udevice(object);
143	switch (mthd) {
144	case NV_DEVICE_V0_INFO:
145		return nvkm_udevice_info(udev, data, size);
146	case NV_DEVICE_V0_TIME:
147		return nvkm_udevice_time(udev, data, size);
148	default:
149		break;
150	}
151	return -EINVAL;
152}
153
154static int
155nvkm_udevice_rd08(struct nvkm_object *object, u64 addr, u8 *data)
156{
157	struct nvkm_udevice *udev = nvkm_udevice(object);
158	*data = nvkm_rd08(udev->device, addr);
159	return 0;
160}
161
162static int
163nvkm_udevice_rd16(struct nvkm_object *object, u64 addr, u16 *data)
164{
165	struct nvkm_udevice *udev = nvkm_udevice(object);
166	*data = nvkm_rd16(udev->device, addr);
167	return 0;
168}
169
170static int
171nvkm_udevice_rd32(struct nvkm_object *object, u64 addr, u32 *data)
172{
173	struct nvkm_udevice *udev = nvkm_udevice(object);
174	*data = nvkm_rd32(udev->device, addr);
175	return 0;
176}
177
178static int
179nvkm_udevice_wr08(struct nvkm_object *object, u64 addr, u8 data)
180{
181	struct nvkm_udevice *udev = nvkm_udevice(object);
182	nvkm_wr08(udev->device, addr, data);
183	return 0;
184}
185
186static int
187nvkm_udevice_wr16(struct nvkm_object *object, u64 addr, u16 data)
188{
189	struct nvkm_udevice *udev = nvkm_udevice(object);
190	nvkm_wr16(udev->device, addr, data);
191	return 0;
192}
193
194static int
195nvkm_udevice_wr32(struct nvkm_object *object, u64 addr, u32 data)
196{
197	struct nvkm_udevice *udev = nvkm_udevice(object);
198	nvkm_wr32(udev->device, addr, data);
199	return 0;
200}
201
202static int
203nvkm_udevice_map(struct nvkm_object *object, u64 *addr, u32 *size)
204{
205	struct nvkm_udevice *udev = nvkm_udevice(object);
206	struct nvkm_device *device = udev->device;
207	*addr = device->func->resource_addr(device, 0);
208	*size = device->func->resource_size(device, 0);
209	return 0;
210}
211
212static int
213nvkm_udevice_fini(struct nvkm_object *object, bool suspend)
214{
215	struct nvkm_udevice *udev = nvkm_udevice(object);
216	struct nvkm_device *device = udev->device;
217	int ret = 0;
218
219	mutex_lock(&device->mutex);
220	if (!--device->refcount) {
221		ret = nvkm_device_fini(device, suspend);
222		if (ret && suspend) {
223			device->refcount++;
224			goto done;
225		}
226	}
227
228done:
229	mutex_unlock(&device->mutex);
230	return ret;
231}
232
233static int
234nvkm_udevice_init(struct nvkm_object *object)
235{
236	struct nvkm_udevice *udev = nvkm_udevice(object);
237	struct nvkm_device *device = udev->device;
238	int ret = 0;
239
240	mutex_lock(&device->mutex);
241	if (!device->refcount++) {
242		ret = nvkm_device_init(device);
243		if (ret) {
244			device->refcount--;
245			goto done;
246		}
247	}
248
249done:
250	mutex_unlock(&device->mutex);
251	return ret;
252}
253
254static int
255nvkm_udevice_child_new(const struct nvkm_oclass *oclass,
256		       void *data, u32 size, struct nvkm_object **pobject)
257{
258	struct nvkm_udevice *udev = nvkm_udevice(oclass->parent);
259	const struct nvkm_device_oclass *sclass = oclass->priv;
260	return sclass->ctor(udev->device, oclass, data, size, pobject);
261}
262
263static int
264nvkm_udevice_child_get(struct nvkm_object *object, int index,
265		       struct nvkm_oclass *oclass)
266{
267	struct nvkm_udevice *udev = nvkm_udevice(object);
268	struct nvkm_device *device = udev->device;
269	struct nvkm_engine *engine;
270	u64 mask = (1ULL << NVKM_ENGINE_DMAOBJ) |
271		   (1ULL << NVKM_ENGINE_FIFO) |
272		   (1ULL << NVKM_ENGINE_DISP) |
273		   (1ULL << NVKM_ENGINE_PM);
274	const struct nvkm_device_oclass *sclass = NULL;
275	int i;
276
277	for (; i = __ffs64(mask), mask && !sclass; mask &= ~(1ULL << i)) {
278		if (!(engine = nvkm_device_engine(device, i)) ||
279		    !(engine->func->base.sclass))
280			continue;
281		oclass->engine = engine;
282
283		index -= engine->func->base.sclass(oclass, index, &sclass);
284	}
285
286	if (!sclass) {
287		switch (index) {
288		case 0: sclass = &nvkm_control_oclass; break;
289		default:
290			return -EINVAL;
291		}
292		oclass->base = sclass->base;
293	}
294
295	oclass->ctor = nvkm_udevice_child_new;
296	oclass->priv = sclass;
297	return 0;
298}
299
300static const struct nvkm_object_func
301nvkm_udevice_super = {
302	.init = nvkm_udevice_init,
303	.fini = nvkm_udevice_fini,
304	.mthd = nvkm_udevice_mthd,
305	.map = nvkm_udevice_map,
306	.rd08 = nvkm_udevice_rd08,
307	.rd16 = nvkm_udevice_rd16,
308	.rd32 = nvkm_udevice_rd32,
309	.wr08 = nvkm_udevice_wr08,
310	.wr16 = nvkm_udevice_wr16,
311	.wr32 = nvkm_udevice_wr32,
312	.sclass = nvkm_udevice_child_get,
313};
314
315static const struct nvkm_object_func
316nvkm_udevice = {
317	.init = nvkm_udevice_init,
318	.fini = nvkm_udevice_fini,
319	.mthd = nvkm_udevice_mthd,
320	.sclass = nvkm_udevice_child_get,
321};
322
323int
324nvkm_udevice_new(const struct nvkm_oclass *oclass, void *data, u32 size,
325		 struct nvkm_object **pobject)
326{
327	union {
328		struct nv_device_v0 v0;
329	} *args = data;
330	struct nvkm_client *client = oclass->client;
331	struct nvkm_object *parent = &client->object;
332	const struct nvkm_object_func *func;
333	struct nvkm_udevice *udev;
334	int ret;
335
336	nvif_ioctl(parent, "create device size %d\n", size);
337	if (nvif_unpack(args->v0, 0, 0, false)) {
338		nvif_ioctl(parent, "create device v%d device %016llx\n",
339			   args->v0.version, args->v0.device);
340	} else
341		return ret;
342
343	/* give priviledged clients register access */
344	if (client->super)
345		func = &nvkm_udevice_super;
346	else
347		func = &nvkm_udevice;
348
349	if (!(udev = kzalloc(sizeof(*udev), GFP_KERNEL)))
350		return -ENOMEM;
351	nvkm_object_ctor(func, oclass, &udev->object);
352	*pobject = &udev->object;
353
354	/* find the device that matches what the client requested */
355	if (args->v0.device != ~0)
356		udev->device = nvkm_device_find(args->v0.device);
357	else
358		udev->device = nvkm_device_find(client->device);
359	if (!udev->device)
360		return -ENODEV;
361
362	return 0;
363}
364
365const struct nvkm_sclass
366nvkm_udevice_sclass = {
367	.oclass = NV_DEVICE,
368	.minver = 0,
369	.maxver = 0,
370	.ctor = nvkm_udevice_new,
371};
372