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
32extern const u8 nvc0_pte_storage_type_map[256];
33
34bool
35nvc0_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
41static void
42nvc0_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
56int
57nvc0_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
76void
77nvc0_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
102int
103nvc0_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) {
129fail0: 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) {
138fail1: 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) {
146fail2: 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) {
155fail3: __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
174struct nouveau_oclass *
175nvc0_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