1 | /* $NetBSD: nouveau_subdev_fb_nvc0.c,v 1.3 2015/10/14 00:12:55 mrg Exp $ */ |
2 | |
3 | /* |
4 | * Copyright 2012 Red Hat Inc. |
5 | * |
6 | * Permission is hereby granted, free of charge, to any person obtaining a |
7 | * copy of this software and associated documentation files (the "Software"), |
8 | * to deal in the Software without restriction, including without limitation |
9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
10 | * and/or sell copies of the Software, and to permit persons to whom the |
11 | * Software is furnished to do so, subject to the following conditions: |
12 | * |
13 | * The above copyright notice and this permission notice shall be included in |
14 | * all copies or substantial portions of the Software. |
15 | * |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
22 | * OTHER DEALINGS IN THE SOFTWARE. |
23 | * |
24 | * Authors: Ben Skeggs |
25 | */ |
26 | |
27 | #include <sys/cdefs.h> |
28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_fb_nvc0.c,v 1.3 2015/10/14 00:12:55 mrg Exp $" ); |
29 | |
30 | #include "nvc0.h" |
31 | |
32 | extern const u8 nvc0_pte_storage_type_map[256]; |
33 | |
34 | bool |
35 | nvc0_fb_memtype_valid(struct nouveau_fb *pfb, u32 tile_flags) |
36 | { |
37 | u8 memtype = (tile_flags & 0x0000ff00) >> 8; |
38 | return likely((nvc0_pte_storage_type_map[memtype] != 0xff)); |
39 | } |
40 | |
41 | static void |
42 | nvc0_fb_intr(struct nouveau_subdev *subdev) |
43 | { |
44 | struct nvc0_fb_priv *priv = (void *)subdev; |
45 | u32 intr = nv_rd32(priv, 0x000100); |
46 | if (intr & 0x08000000) { |
47 | nv_debug(priv, "PFFB intr\n" ); |
48 | intr &= ~0x08000000; |
49 | } |
50 | if (intr & 0x00002000) { |
51 | nv_debug(priv, "PBFB intr\n" ); |
52 | intr &= ~0x00002000; |
53 | } |
54 | } |
55 | |
56 | int |
57 | nvc0_fb_init(struct nouveau_object *object) |
58 | { |
59 | struct nvc0_fb_priv *priv = (void *)object; |
60 | int ret; |
61 | |
62 | ret = nouveau_fb_init(&priv->base); |
63 | if (ret) |
64 | return ret; |
65 | |
66 | #ifdef __NetBSD__ |
67 | if (priv->r100c10_map) |
68 | nv_wr32(priv, 0x100c10, priv->r100c10 >> 8); |
69 | #else |
70 | if (priv->r100c10_page) |
71 | nv_wr32(priv, 0x100c10, priv->r100c10 >> 8); |
72 | #endif |
73 | return 0; |
74 | } |
75 | |
76 | void |
77 | nvc0_fb_dtor(struct nouveau_object *object) |
78 | { |
79 | struct nouveau_device *device = nv_device(object); |
80 | struct nvc0_fb_priv *priv = (void *)object; |
81 | |
82 | #ifdef __NetBSD__ |
83 | if (priv->r100c10_map) { |
84 | const bus_dma_tag_t dmat = pci_dma64_available(&device->pdev->pd_pa) ? |
85 | device->pdev->pd_pa.pa_dmat64 : device->pdev->pd_pa.pa_dmat; |
86 | |
87 | bus_dmamap_unload(dmat, priv->r100c10_map); |
88 | bus_dmamem_unmap(dmat, priv->r100c10_kva, PAGE_SIZE); |
89 | bus_dmamap_destroy(dmat, priv->r100c10_map); |
90 | bus_dmamem_free(dmat, &priv->r100c10_seg, 1); |
91 | } |
92 | #else |
93 | if (priv->r100c10_page) { |
94 | nv_device_unmap_page(device, priv->r100c10); |
95 | __free_page(priv->r100c10_page); |
96 | } |
97 | #endif |
98 | |
99 | nouveau_fb_destroy(&priv->base); |
100 | } |
101 | |
102 | int |
103 | nvc0_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine, |
104 | struct nouveau_oclass *oclass, void *data, u32 size, |
105 | struct nouveau_object **pobject) |
106 | { |
107 | struct nouveau_device *device = nv_device(parent); |
108 | struct nvc0_fb_priv *priv; |
109 | int ret; |
110 | |
111 | ret = nouveau_fb_create(parent, engine, oclass, &priv); |
112 | *pobject = nv_object(priv); |
113 | if (ret) |
114 | return ret; |
115 | |
116 | #ifdef __NetBSD__ |
117 | { |
118 | const bus_dma_tag_t dmat = pci_dma64_available(&device->pdev->pd_pa) ? |
119 | device->pdev->pd_pa.pa_dmat64 : device->pdev->pd_pa.pa_dmat; |
120 | int nsegs; |
121 | |
122 | priv->r100c10_map = NULL; /* paranoia */ |
123 | priv->r100c10_kva = NULL; |
124 | |
125 | /* XXX errno NetBSD->Linux */ |
126 | ret = -bus_dmamem_alloc(dmat, PAGE_SIZE, PAGE_SIZE, 0, |
127 | &priv->r100c10_seg, 1, &nsegs, BUS_DMA_WAITOK); |
128 | if (ret) { |
129 | fail0: nouveau_fb_destroy(&priv->base); |
130 | return ret; |
131 | } |
132 | KASSERT(nsegs == 1); |
133 | |
134 | /* XXX errno NetBSD->Linux */ |
135 | ret = -bus_dmamap_create(dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, |
136 | BUS_DMA_WAITOK, &priv->r100c10_map); |
137 | if (ret) { |
138 | fail1: bus_dmamem_free(dmat, &priv->r100c10_seg, 1); |
139 | goto fail0; |
140 | } |
141 | |
142 | /* XXX errno NetBSD->Linux */ |
143 | ret = -bus_dmamem_map(dmat, &priv->r100c10_seg, 1, PAGE_SIZE, |
144 | &priv->r100c10_kva, BUS_DMA_WAITOK); |
145 | if (ret) { |
146 | fail2: bus_dmamap_destroy(dmat, priv->r100c10_map); |
147 | goto fail1; |
148 | } |
149 | (void)memset(priv->r100c10_kva, 0, PAGE_SIZE); |
150 | |
151 | /* XXX errno NetBSD->Linux */ |
152 | ret = -bus_dmamap_load(dmat, priv->r100c10_map, priv->r100c10_kva, |
153 | PAGE_SIZE, NULL, BUS_DMA_WAITOK); |
154 | if (ret) { |
155 | fail3: __unused bus_dmamem_unmap(dmat, priv->r100c10_kva, PAGE_SIZE); |
156 | goto fail2; |
157 | } |
158 | |
159 | priv->r100c10 = priv->r100c10_map->dm_segs[0].ds_addr; |
160 | } |
161 | #else |
162 | priv->r100c10_page = alloc_page(GFP_KERNEL | __GFP_ZERO); |
163 | if (priv->r100c10_page) { |
164 | priv->r100c10 = nv_device_map_page(device, priv->r100c10_page); |
165 | if (!priv->r100c10) |
166 | return -EFAULT; |
167 | } |
168 | #endif |
169 | |
170 | nv_subdev(priv)->intr = nvc0_fb_intr; |
171 | return 0; |
172 | } |
173 | |
174 | struct nouveau_oclass * |
175 | nvc0_fb_oclass = &(struct nouveau_fb_impl) { |
176 | .base.handle = NV_SUBDEV(FB, 0xc0), |
177 | .base.ofuncs = &(struct nouveau_ofuncs) { |
178 | .ctor = nvc0_fb_ctor, |
179 | .dtor = nvc0_fb_dtor, |
180 | .init = nvc0_fb_init, |
181 | .fini = _nouveau_fb_fini, |
182 | }, |
183 | .memtype = nvc0_fb_memtype_valid, |
184 | .ram = &nvc0_ram_oclass, |
185 | }.base; |
186 | |