Merge branch 'for-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
[firefly-linux-kernel-4.4.55.git] / drivers / gpu / drm / nouveau / nv17_fifo.c
1 /*
2  * Copyright (C) 2012 Ben Skeggs.
3  * All Rights Reserved.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining
6  * a copy of this software and associated documentation files (the
7  * "Software"), to deal in the Software without restriction, including
8  * without limitation the rights to use, copy, modify, merge, publish,
9  * distribute, sublicense, and/or sell copies of the Software, and to
10  * permit persons to whom the Software is furnished to do so, subject to
11  * the following conditions:
12  *
13  * The above copyright notice and this permission notice (including the
14  * next paragraph) shall be included in all copies or substantial
15  * portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24  *
25  */
26
27 #include "drmP.h"
28 #include "drm.h"
29 #include "nouveau_drv.h"
30 #include "nouveau_fifo.h"
31 #include "nouveau_util.h"
32 #include "nouveau_ramht.h"
33
34 static struct ramfc_desc {
35         unsigned bits:6;
36         unsigned ctxs:5;
37         unsigned ctxp:8;
38         unsigned regs:5;
39         unsigned regp;
40 } nv17_ramfc[] = {
41         { 32,  0, 0x00,  0, NV04_PFIFO_CACHE1_DMA_PUT },
42         { 32,  0, 0x04,  0, NV04_PFIFO_CACHE1_DMA_GET },
43         { 32,  0, 0x08,  0, NV10_PFIFO_CACHE1_REF_CNT },
44         { 16,  0, 0x0c,  0, NV04_PFIFO_CACHE1_DMA_INSTANCE },
45         { 16, 16, 0x0c,  0, NV04_PFIFO_CACHE1_DMA_DCOUNT },
46         { 32,  0, 0x10,  0, NV04_PFIFO_CACHE1_DMA_STATE },
47         { 32,  0, 0x14,  0, NV04_PFIFO_CACHE1_DMA_FETCH },
48         { 32,  0, 0x18,  0, NV04_PFIFO_CACHE1_ENGINE },
49         { 32,  0, 0x1c,  0, NV04_PFIFO_CACHE1_PULL1 },
50         { 32,  0, 0x20,  0, NV10_PFIFO_CACHE1_ACQUIRE_VALUE },
51         { 32,  0, 0x24,  0, NV10_PFIFO_CACHE1_ACQUIRE_TIMESTAMP },
52         { 32,  0, 0x28,  0, NV10_PFIFO_CACHE1_ACQUIRE_TIMEOUT },
53         { 32,  0, 0x2c,  0, NV10_PFIFO_CACHE1_SEMAPHORE },
54         { 32,  0, 0x30,  0, NV10_PFIFO_CACHE1_DMA_SUBROUTINE },
55         {}
56 };
57
58 struct nv17_fifo_priv {
59         struct nouveau_fifo_priv base;
60         struct ramfc_desc *ramfc_desc;
61 };
62
63 struct nv17_fifo_chan {
64         struct nouveau_fifo_chan base;
65         struct nouveau_gpuobj *ramfc;
66 };
67
68 static int
69 nv17_fifo_context_new(struct nouveau_channel *chan, int engine)
70 {
71         struct drm_device *dev = chan->dev;
72         struct drm_nouveau_private *dev_priv = dev->dev_private;
73         struct nv17_fifo_priv *priv = nv_engine(dev, engine);
74         struct nv17_fifo_chan *fctx;
75         unsigned long flags;
76         int ret;
77
78         fctx = chan->engctx[engine] = kzalloc(sizeof(*fctx), GFP_KERNEL);
79         if (!fctx)
80                 return -ENOMEM;
81
82         /* map channel control registers */
83         chan->user = ioremap(pci_resource_start(dev->pdev, 0) +
84                              NV03_USER(chan->id), PAGE_SIZE);
85         if (!chan->user) {
86                 ret = -ENOMEM;
87                 goto error;
88         }
89
90         /* initialise default fifo context */
91         ret = nouveau_gpuobj_new_fake(dev, dev_priv->ramfc->pinst +
92                                       chan->id * 64, ~0, 64,
93                                       NVOBJ_FLAG_ZERO_ALLOC |
94                                       NVOBJ_FLAG_ZERO_FREE, &fctx->ramfc);
95         if (ret)
96                 goto error;
97
98         nv_wo32(fctx->ramfc, 0x00, chan->pushbuf_base);
99         nv_wo32(fctx->ramfc, 0x04, chan->pushbuf_base);
100         nv_wo32(fctx->ramfc, 0x0c, chan->pushbuf->pinst >> 4);
101         nv_wo32(fctx->ramfc, 0x14, NV_PFIFO_CACHE1_DMA_FETCH_TRIG_128_BYTES |
102                                    NV_PFIFO_CACHE1_DMA_FETCH_SIZE_128_BYTES |
103 #ifdef __BIG_ENDIAN
104                                    NV_PFIFO_CACHE1_BIG_ENDIAN |
105 #endif
106                                    NV_PFIFO_CACHE1_DMA_FETCH_MAX_REQS_8);
107
108         /* enable dma mode on the channel */
109         spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
110         nv_mask(dev, NV04_PFIFO_MODE, (1 << chan->id), (1 << chan->id));
111         spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
112
113 error:
114         if (ret)
115                 priv->base.base.context_del(chan, engine);
116         return ret;
117 }
118
119 static int
120 nv17_fifo_init(struct drm_device *dev, int engine)
121 {
122         struct drm_nouveau_private *dev_priv = dev->dev_private;
123         struct nv17_fifo_priv *priv = nv_engine(dev, engine);
124         int i;
125
126         nv_mask(dev, NV03_PMC_ENABLE, NV_PMC_ENABLE_PFIFO, 0);
127         nv_mask(dev, NV03_PMC_ENABLE, NV_PMC_ENABLE_PFIFO, NV_PMC_ENABLE_PFIFO);
128
129         nv_wr32(dev, NV04_PFIFO_DELAY_0, 0x000000ff);
130         nv_wr32(dev, NV04_PFIFO_DMA_TIMESLICE, 0x0101ffff);
131
132         nv_wr32(dev, NV03_PFIFO_RAMHT, (0x03 << 24) /* search 128 */ |
133                                        ((dev_priv->ramht->bits - 9) << 16) |
134                                        (dev_priv->ramht->gpuobj->pinst >> 8));
135         nv_wr32(dev, NV03_PFIFO_RAMRO, dev_priv->ramro->pinst >> 8);
136         nv_wr32(dev, NV03_PFIFO_RAMFC, 0x00010000 |
137                                        dev_priv->ramfc->pinst >> 8);
138
139         nv_wr32(dev, NV03_PFIFO_CACHE1_PUSH1, priv->base.channels);
140
141         nv_wr32(dev, NV03_PFIFO_INTR_0, 0xffffffff);
142         nv_wr32(dev, NV03_PFIFO_INTR_EN_0, 0xffffffff);
143
144         nv_wr32(dev, NV03_PFIFO_CACHE1_PUSH0, 1);
145         nv_wr32(dev, NV04_PFIFO_CACHE1_PULL0, 1);
146         nv_wr32(dev, NV03_PFIFO_CACHES, 1);
147
148         for (i = 0; i < priv->base.channels; i++) {
149                 if (dev_priv->channels.ptr[i])
150                         nv_mask(dev, NV04_PFIFO_MODE, (1 << i), (1 << i));
151         }
152
153         return 0;
154 }
155
156 int
157 nv17_fifo_create(struct drm_device *dev)
158 {
159         struct drm_nouveau_private *dev_priv = dev->dev_private;
160         struct nv17_fifo_priv *priv;
161
162         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
163         if (!priv)
164                 return -ENOMEM;
165
166         priv->base.base.destroy = nv04_fifo_destroy;
167         priv->base.base.init = nv17_fifo_init;
168         priv->base.base.fini = nv04_fifo_fini;
169         priv->base.base.context_new = nv17_fifo_context_new;
170         priv->base.base.context_del = nv04_fifo_context_del;
171         priv->base.channels = 31;
172         priv->ramfc_desc = nv17_ramfc;
173         dev_priv->eng[NVOBJ_ENGINE_FIFO] = &priv->base.base;
174
175         nouveau_irq_register(dev, 8, nv04_fifo_isr);
176         return 0;
177 }