1 /*
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2025 The FreeBSD Foundation
5 *
6 * This software was developed by Aymeric Wibo <obiwac@freebsd.org>
7 * under sponsorship from the FreeBSD Foundation.
8 */
9 #ifndef _AMDSMU_H_
10 #define _AMDSMU_H_
11
12 #include <sys/param.h>
13 #include <sys/bus.h>
14 #include <sys/kernel.h>
15 #include <machine/bus.h>
16 #include <x86/cputypes.h>
17
18 #include <dev/amdsmu/amdsmu_reg.h>
19
20 #define SMU_RES_READ_PERIOD_US 50
21 #define SMU_RES_READ_MAX 20000
22
23 static const struct amdsmu_product {
24 uint16_t amdsmu_vendorid;
25 uint16_t amdsmu_deviceid;
26 } amdsmu_products[] = {
27 { CPU_VENDOR_AMD, PCI_DEVICEID_AMD_REMBRANDT_ROOT },
28 { CPU_VENDOR_AMD, PCI_DEVICEID_AMD_PHOENIX_ROOT },
29 { CPU_VENDOR_AMD, PCI_DEVICEID_AMD_STRIX_POINT_ROOT },
30 };
31
32 static const char *const amdsmu_ip_blocks_names[] = {
33 "DISPLAY",
34 "CPU",
35 "GFX",
36 "VDD",
37 "ACP",
38 "VCN",
39 "ISP",
40 "NBIO",
41 "DF",
42 "USB3_0",
43 "USB3_1",
44 "LAPIC",
45 "USB3_2",
46 "USB3_3",
47 "USB3_4",
48 "USB4_0",
49 "USB4_1",
50 "MPM",
51 "JPEG",
52 "IPU",
53 "UMSCH",
54 "VPE",
55 };
56
57 CTASSERT(nitems(amdsmu_ip_blocks_names) <= 32);
58
59 struct amdsmu_softc {
60 struct sysctl_ctx_list *sysctlctx;
61 struct sysctl_oid *sysctlnode;
62
63 struct resource *res;
64 bus_space_tag_t bus_tag;
65
66 bus_space_handle_t smu_space;
67 bus_space_handle_t reg_space;
68
69 uint8_t smu_program;
70 uint8_t smu_maj, smu_min, smu_rev;
71
72 uint32_t active_ip_blocks;
73 struct sysctl_oid *ip_blocks_sysctlnode;
74 size_t ip_block_count;
75 struct sysctl_oid *ip_block_sysctlnodes[nitems(amdsmu_ip_blocks_names)];
76 bool ip_blocks_active[nitems(amdsmu_ip_blocks_names)];
77
78 bus_space_handle_t metrics_space;
79 struct amdsmu_metrics metrics;
80 uint32_t idlemask;
81 };
82
83 static inline uint32_t
amdsmu_read4(const struct amdsmu_softc * sc,bus_size_t reg)84 amdsmu_read4(const struct amdsmu_softc *sc, bus_size_t reg)
85 {
86 return (bus_space_read_4(sc->bus_tag, sc->reg_space, reg));
87 }
88
89 static inline void
amdsmu_write4(const struct amdsmu_softc * sc,bus_size_t reg,uint32_t val)90 amdsmu_write4(const struct amdsmu_softc *sc, bus_size_t reg, uint32_t val)
91 {
92 bus_space_write_4(sc->bus_tag, sc->reg_space, reg, val);
93 }
94
95 #endif /* _AMDSMU_H_ */
96