1 /*
2 * Copyright 2023 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 */
22 #include "priv.h"
23 #include "ram.h"
24
25 #include <subdev/gsp.h>
26
27 static const struct nvkm_ram_func
28 r535_fb_ram = {
29 };
30
31 static int
r535_fb_ram_new(struct nvkm_fb * fb,struct nvkm_ram ** pram)32 r535_fb_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
33 {
34 struct nvkm_gsp *gsp = fb->subdev.device->gsp;
35 struct nvkm_ram *ram;
36 int ret;
37
38 if (!(ram = *pram = kzalloc(sizeof(*ram), GFP_KERNEL)))
39 return -ENOMEM;
40
41 ram->func = &r535_fb_ram;
42 ram->fb = fb;
43 ram->type = NVKM_RAM_TYPE_UNKNOWN; /*TODO: pull this from GSP. */
44 ram->size = gsp->fb.size;
45 ram->stolen = false;
46 mutex_init(&ram->mutex);
47
48 for (int i = 0; i < gsp->fb.region_nr; i++) {
49 ret = nvkm_mm_init(&ram->vram, NVKM_RAM_MM_NORMAL,
50 gsp->fb.region[i].addr >> NVKM_RAM_MM_SHIFT,
51 gsp->fb.region[i].size >> NVKM_RAM_MM_SHIFT,
52 1);
53 if (ret)
54 return ret;
55 }
56
57 return 0;
58 }
59
60 static void *
r535_fb_dtor(struct nvkm_fb * fb)61 r535_fb_dtor(struct nvkm_fb *fb)
62 {
63 kfree(fb->func);
64 return fb;
65 }
66
67 int
r535_fb_new(const struct nvkm_fb_func * hw,struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_fb ** pfb)68 r535_fb_new(const struct nvkm_fb_func *hw,
69 struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
70 {
71 struct nvkm_fb_func *rm;
72 int ret;
73
74 if (!(rm = kzalloc(sizeof(*rm), GFP_KERNEL)))
75 return -ENOMEM;
76
77 rm->dtor = r535_fb_dtor;
78 rm->sysmem.flush_page_init = hw->sysmem.flush_page_init;
79 rm->vidmem.size = hw->vidmem.size;
80 rm->ram_new = r535_fb_ram_new;
81
82 ret = nvkm_fb_new_(rm, device, type, inst, pfb);
83 if (ret)
84 kfree(rm);
85
86 return ret;
87 }
88