1 /* $NetBSD: nouveau_nvkm_subdev_bios_pmu.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $ */
2
3 /*
4 * Copyright 2014 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 <bskeggs@redhat.com>
25 */
26 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_bios_pmu.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $");
28
29 #include <subdev/bios.h>
30 #include <subdev/bios/bit.h>
31 #include <subdev/bios/image.h>
32 #include <subdev/bios/pmu.h>
33
34 u32
nvbios_pmuTe(struct nvkm_bios * bios,u8 * ver,u8 * hdr,u8 * cnt,u8 * len)35 nvbios_pmuTe(struct nvkm_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
36 {
37 struct bit_entry bit_p;
38 u32 data = 0;
39
40 if (!bit_entry(bios, 'p', &bit_p)) {
41 if (bit_p.version == 2 && bit_p.length >= 4)
42 data = nvbios_rd32(bios, bit_p.offset + 0x00);
43 if (data) {
44 *ver = nvbios_rd08(bios, data + 0x00); /* maybe? */
45 *hdr = nvbios_rd08(bios, data + 0x01);
46 *len = nvbios_rd08(bios, data + 0x02);
47 *cnt = nvbios_rd08(bios, data + 0x03);
48 }
49 }
50
51 return data;
52 }
53
54 u32
nvbios_pmuEe(struct nvkm_bios * bios,int idx,u8 * ver,u8 * hdr)55 nvbios_pmuEe(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr)
56 {
57 u8 cnt, len;
58 u32 data = nvbios_pmuTe(bios, ver, hdr, &cnt, &len);
59 if (data && idx < cnt) {
60 data = data + *hdr + (idx * len);
61 *hdr = len;
62 return data;
63 }
64 return 0;
65 }
66
67 u32
nvbios_pmuEp(struct nvkm_bios * bios,int idx,u8 * ver,u8 * hdr,struct nvbios_pmuE * info)68 nvbios_pmuEp(struct nvkm_bios *bios, int idx, u8 *ver, u8 *hdr,
69 struct nvbios_pmuE *info)
70 {
71 u32 data = nvbios_pmuEe(bios, idx, ver, hdr);
72 memset(info, 0x00, sizeof(*info));
73 switch (!!data * *ver) {
74 default:
75 info->type = nvbios_rd08(bios, data + 0x00);
76 info->data = nvbios_rd32(bios, data + 0x02);
77 break;
78 }
79 return data;
80 }
81
82 bool
nvbios_pmuRm(struct nvkm_bios * bios,u8 type,struct nvbios_pmuR * info)83 nvbios_pmuRm(struct nvkm_bios *bios, u8 type, struct nvbios_pmuR *info)
84 {
85 struct nvbios_pmuE pmuE;
86 u8 ver, hdr, idx = 0;
87 u32 data;
88 memset(info, 0x00, sizeof(*info));
89 while ((data = nvbios_pmuEp(bios, idx++, &ver, &hdr, &pmuE))) {
90 if (pmuE.type == type && (data = pmuE.data)) {
91 info->init_addr_pmu = nvbios_rd32(bios, data + 0x08);
92 info->args_addr_pmu = nvbios_rd32(bios, data + 0x0c);
93 info->boot_addr = data + 0x30;
94 info->boot_addr_pmu = nvbios_rd32(bios, data + 0x10) +
95 nvbios_rd32(bios, data + 0x18);
96 info->boot_size = nvbios_rd32(bios, data + 0x1c) -
97 nvbios_rd32(bios, data + 0x18);
98 info->code_addr = info->boot_addr + info->boot_size;
99 info->code_addr_pmu = info->boot_addr_pmu +
100 info->boot_size;
101 info->code_size = nvbios_rd32(bios, data + 0x20);
102 info->data_addr = data + 0x30 +
103 nvbios_rd32(bios, data + 0x24);
104 info->data_addr_pmu = nvbios_rd32(bios, data + 0x28);
105 info->data_size = nvbios_rd32(bios, data + 0x2c);
106 return true;
107 }
108 }
109 return false;
110 }
111