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24#include "priv.h"
25#include "chan.h"
26
27#include <core/client.h>
28#include <core/gpuobj.h>
29#include <core/notify.h>
30
31#include <nvif/event.h>
32#include <nvif/unpack.h>
33
34void
35nvkm_fifo_pause(struct nvkm_fifo *fifo, unsigned long *flags)
36{
37 return fifo->func->pause(fifo, flags);
38}
39
40void
41nvkm_fifo_start(struct nvkm_fifo *fifo, unsigned long *flags)
42{
43 return fifo->func->start(fifo, flags);
44}
45
46void
47nvkm_fifo_chan_put(struct nvkm_fifo *fifo, unsigned long flags,
48 struct nvkm_fifo_chan **pchan)
49{
50 struct nvkm_fifo_chan *chan = *pchan;
51 if (likely(chan)) {
52 *pchan = NULL;
53 spin_unlock_irqrestore(&fifo->lock, flags);
54 }
55}
56
57struct nvkm_fifo_chan *
58nvkm_fifo_chan_inst(struct nvkm_fifo *fifo, u64 inst, unsigned long *rflags)
59{
60 struct nvkm_fifo_chan *chan;
61 unsigned long flags;
62 spin_lock_irqsave(&fifo->lock, flags);
63 list_for_each_entry(chan, &fifo->chan, head) {
64 if (chan->inst->addr == inst) {
65 list_del(&chan->head);
66 list_add(&chan->head, &fifo->chan);
67 *rflags = flags;
68 return chan;
69 }
70 }
71 spin_unlock_irqrestore(&fifo->lock, flags);
72 return NULL;
73}
74
75struct nvkm_fifo_chan *
76nvkm_fifo_chan_chid(struct nvkm_fifo *fifo, int chid, unsigned long *rflags)
77{
78 struct nvkm_fifo_chan *chan;
79 unsigned long flags;
80 spin_lock_irqsave(&fifo->lock, flags);
81 list_for_each_entry(chan, &fifo->chan, head) {
82 if (chan->chid == chid) {
83 list_del(&chan->head);
84 list_add(&chan->head, &fifo->chan);
85 *rflags = flags;
86 return chan;
87 }
88 }
89 spin_unlock_irqrestore(&fifo->lock, flags);
90 return NULL;
91}
92
93static int
94nvkm_fifo_event_ctor(struct nvkm_object *object, void *data, u32 size,
95 struct nvkm_notify *notify)
96{
97 if (size == 0) {
98 notify->size = 0;
99 notify->types = 1;
100 notify->index = 0;
101 return 0;
102 }
103 return -ENOSYS;
104}
105
106static const struct nvkm_event_func
107nvkm_fifo_event_func = {
108 .ctor = nvkm_fifo_event_ctor,
109};
110
111static void
112nvkm_fifo_uevent_fini(struct nvkm_event *event, int type, int index)
113{
114 struct nvkm_fifo *fifo = container_of(event, typeof(*fifo), uevent);
115 fifo->func->uevent_fini(fifo);
116}
117
118static void
119nvkm_fifo_uevent_init(struct nvkm_event *event, int type, int index)
120{
121 struct nvkm_fifo *fifo = container_of(event, typeof(*fifo), uevent);
122 fifo->func->uevent_init(fifo);
123}
124
125static int
126nvkm_fifo_uevent_ctor(struct nvkm_object *object, void *data, u32 size,
127 struct nvkm_notify *notify)
128{
129 union {
130 struct nvif_notify_uevent_req none;
131 } *req = data;
132 int ret = -ENOSYS;
133
134 if (!(ret = nvif_unvers(ret, &data, &size, req->none))) {
135 notify->size = sizeof(struct nvif_notify_uevent_rep);
136 notify->types = 1;
137 notify->index = 0;
138 }
139
140 return ret;
141}
142
143static const struct nvkm_event_func
144nvkm_fifo_uevent_func = {
145 .ctor = nvkm_fifo_uevent_ctor,
146 .init = nvkm_fifo_uevent_init,
147 .fini = nvkm_fifo_uevent_fini,
148};
149
150void
151nvkm_fifo_uevent(struct nvkm_fifo *fifo)
152{
153 struct nvif_notify_uevent_rep rep = {
154 };
155 nvkm_event_send(&fifo->uevent, 1, 0, &rep, sizeof(rep));
156}
157
158static int
159nvkm_fifo_class_new(struct nvkm_device *device,
160 const struct nvkm_oclass *oclass, void *data, u32 size,
161 struct nvkm_object **pobject)
162{
163 const struct nvkm_fifo_chan_oclass *sclass = oclass->engn;
164 struct nvkm_fifo *fifo = nvkm_fifo(oclass->engine);
165 return sclass->ctor(fifo, oclass, data, size, pobject);
166}
167
168static const struct nvkm_device_oclass
169nvkm_fifo_class = {
170 .ctor = nvkm_fifo_class_new,
171};
172
173static int
174nvkm_fifo_class_get(struct nvkm_oclass *oclass, int index,
175 const struct nvkm_device_oclass **class)
176{
177 struct nvkm_fifo *fifo = nvkm_fifo(oclass->engine);
178 const struct nvkm_fifo_chan_oclass *sclass;
179 int c = 0;
180
181 if (fifo->func->class_get) {
182 int ret = fifo->func->class_get(fifo, index, &sclass);
183 if (ret == 0) {
184 oclass->base = sclass->base;
185 oclass->engn = sclass;
186 *class = &nvkm_fifo_class;
187 return 0;
188 }
189 return ret;
190 }
191
192 while ((sclass = fifo->func->chan[c])) {
193 if (c++ == index) {
194 oclass->base = sclass->base;
195 oclass->engn = sclass;
196 *class = &nvkm_fifo_class;
197 return 0;
198 }
199 }
200
201 return c;
202}
203
204static void
205nvkm_fifo_intr(struct nvkm_engine *engine)
206{
207 struct nvkm_fifo *fifo = nvkm_fifo(engine);
208 fifo->func->intr(fifo);
209}
210
211static int
212nvkm_fifo_fini(struct nvkm_engine *engine, bool suspend)
213{
214 struct nvkm_fifo *fifo = nvkm_fifo(engine);
215 if (fifo->func->fini)
216 fifo->func->fini(fifo);
217 return 0;
218}
219
220static int
221nvkm_fifo_oneinit(struct nvkm_engine *engine)
222{
223 struct nvkm_fifo *fifo = nvkm_fifo(engine);
224 if (fifo->func->oneinit)
225 return fifo->func->oneinit(fifo);
226 return 0;
227}
228
229static int
230nvkm_fifo_init(struct nvkm_engine *engine)
231{
232 struct nvkm_fifo *fifo = nvkm_fifo(engine);
233 fifo->func->init(fifo);
234 return 0;
235}
236
237static void *
238nvkm_fifo_dtor(struct nvkm_engine *engine)
239{
240 struct nvkm_fifo *fifo = nvkm_fifo(engine);
241 void *data = fifo;
242 if (fifo->func->dtor)
243 data = fifo->func->dtor(fifo);
244 nvkm_event_fini(&fifo->cevent);
245 nvkm_event_fini(&fifo->uevent);
246 return data;
247}
248
249static const struct nvkm_engine_func
250nvkm_fifo = {
251 .dtor = nvkm_fifo_dtor,
252 .oneinit = nvkm_fifo_oneinit,
253 .init = nvkm_fifo_init,
254 .fini = nvkm_fifo_fini,
255 .intr = nvkm_fifo_intr,
256 .base.sclass = nvkm_fifo_class_get,
257};
258
259int
260nvkm_fifo_ctor(const struct nvkm_fifo_func *func, struct nvkm_device *device,
261 int index, int nr, struct nvkm_fifo *fifo)
262{
263 int ret;
264
265 fifo->func = func;
266 INIT_LIST_HEAD(&fifo->chan);
267 spin_lock_init(&fifo->lock);
268
269 if (WARN_ON(fifo->nr > NVKM_FIFO_CHID_NR))
270 fifo->nr = NVKM_FIFO_CHID_NR;
271 else
272 fifo->nr = nr;
273 bitmap_clear(fifo->mask, 0, fifo->nr);
274
275 ret = nvkm_engine_ctor(&nvkm_fifo, device, index, true, &fifo->engine);
276 if (ret)
277 return ret;
278
279 if (func->uevent_init) {
280 ret = nvkm_event_init(&nvkm_fifo_uevent_func, 1, 1,
281 &fifo->uevent);
282 if (ret)
283 return ret;
284 }
285
286 return nvkm_event_init(&nvkm_fifo_event_func, 1, 1, &fifo->cevent);
287}
288