Lines Matching refs:chan
41 READ_GET(struct nouveau_channel *chan, uint64_t *prev_get, int *timeout)
45 val = nvif_rd32(&chan->user, chan->user_get);
46 if (chan->user_get_hi)
47 val |= (uint64_t)nvif_rd32(&chan->user, chan->user_get_hi) << 32;
64 if (val < chan->push.addr ||
65 val > chan->push.addr + (chan->dma.max << 2))
68 return (val - chan->push.addr) >> 2;
72 nv50_dma_push(struct nouveau_channel *chan, u64 offset, int length)
74 struct nvif_user *user = &chan->drm->client.device.user;
75 struct nouveau_bo *pb = chan->push.buffer;
76 int ip = (chan->dma.ib_put * 2) + chan->dma.ib_base;
78 BUG_ON(chan->dma.ib_free < 1);
83 chan->dma.ib_put = (chan->dma.ib_put + 1) & chan->dma.ib_max;
89 nvif_wr32(&chan->user, 0x8c, chan->dma.ib_put);
91 user->func->doorbell(user, chan->token);
92 chan->dma.ib_free--;
96 nv50_dma_push_wait(struct nouveau_channel *chan, int count)
100 while (chan->dma.ib_free < count) {
101 uint32_t get = nvif_rd32(&chan->user, 0x88);
113 chan->dma.ib_free = get - chan->dma.ib_put;
114 if (chan->dma.ib_free <= 0)
115 chan->dma.ib_free += chan->dma.ib_max;
122 nv50_dma_wait(struct nouveau_channel *chan, int slots, int count)
127 ret = nv50_dma_push_wait(chan, slots + 1);
131 while (chan->dma.free < count) {
132 int get = READ_GET(chan, &prev_get, &cnt);
140 if (get <= chan->dma.cur) {
141 chan->dma.free = chan->dma.max - chan->dma.cur;
142 if (chan->dma.free >= count)
145 FIRE_RING(chan);
147 get = READ_GET(chan, &prev_get, &cnt);
154 chan->dma.cur = 0;
155 chan->dma.put = 0;
158 chan->dma.free = get - chan->dma.cur - 1;
165 nouveau_dma_wait(struct nouveau_channel *chan, int slots, int size)
170 if (chan->dma.ib_max)
171 return nv50_dma_wait(chan, slots, size);
173 while (chan->dma.free < size) {
174 get = READ_GET(chan, &prev_get, &cnt);
190 if (get <= chan->dma.cur) {
204 chan->dma.free = chan->dma.max - chan->dma.cur;
205 if (chan->dma.free >= size)
212 OUT_RING(chan, chan->push.addr | 0x20000000);
220 get = READ_GET(chan, &prev_get, &cnt);
231 chan->dma.cur =
232 chan->dma.put = NOUVEAU_DMA_SKIPS;
241 chan->dma.free = get - chan->dma.cur - 1;