1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2022-2023, Advanced Micro Devices, Inc.
*/
#include <linux/module.h>
#include "mcdi.h"
#include "mcdi_functions.h"
int cdx_mcdi_get_num_buses(struct cdx_mcdi *cdx)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_CDX_BUS_ENUM_BUSES_OUT_LEN);
size_t outlen;
int ret;
ret = cdx_mcdi_rpc(cdx, MC_CMD_CDX_BUS_ENUM_BUSES, NULL, 0,
outbuf, sizeof(outbuf), &outlen);
if (ret)
return ret;
if (outlen != MC_CMD_CDX_BUS_ENUM_BUSES_OUT_LEN)
return -EIO;
return MCDI_DWORD(outbuf, CDX_BUS_ENUM_BUSES_OUT_BUS_COUNT);
}
int cdx_mcdi_get_num_devs(struct cdx_mcdi *cdx, int bus_num)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_CDX_BUS_ENUM_DEVICES_OUT_LEN);
MCDI_DECLARE_BUF(inbuf, MC_CMD_CDX_BUS_ENUM_DEVICES_IN_LEN);
size_t outlen;
int ret;
MCDI_SET_DWORD(inbuf, CDX_BUS_ENUM_DEVICES_IN_BUS, bus_num);
ret = cdx_mcdi_rpc(cdx, MC_CMD_CDX_BUS_ENUM_DEVICES, inbuf, sizeof(inbuf),
outbuf, sizeof(outbuf), &outlen);
if (ret)
return ret;
if (outlen != MC_CMD_CDX_BUS_ENUM_DEVICES_OUT_LEN)
return -EIO;
return MCDI_DWORD(outbuf, CDX_BUS_ENUM_DEVICES_OUT_DEVICE_COUNT);
}
int cdx_mcdi_get_dev_config(struct cdx_mcdi *cdx,
u8 bus_num, u8 dev_num,
struct cdx_dev_params *dev_params)
{
MCDI_DECLARE_BUF(outbuf, MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_OUT_LEN);
MCDI_DECLARE_BUF(inbuf, MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_IN_LEN);
struct resource *res = &dev_params->res[0];
size_t outlen;
u32 req_id;
int ret;
MCDI_SET_DWORD(inbuf, CDX_BUS_GET_DEVICE_CONFIG_IN_BUS, bus_num);
MCDI_SET_DWORD(inbuf, CDX_BUS_GET_DEVICE_CONFIG_IN_DEVICE, dev_num);
ret = cdx_mcdi_rpc(cdx, MC_CMD_CDX_BUS_GET_DEVICE_CONFIG, inbuf, sizeof(inbuf),
outbuf, sizeof(outbuf), &outlen);
if (ret)
return ret;
if (outlen != MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_OUT_LEN)
return -EIO;
dev_params->bus_num = bus_num;
dev_params->dev_num = dev_num;
req_id = MCDI_DWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_REQUESTER_ID);
dev_params->req_id = req_id;
dev_params->res_count = 0;
if (MCDI_QWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION0_SIZE) != 0) {
res[dev_params->res_count].start =
MCDI_QWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION0_BASE);
res[dev_params->res_count].end =
MCDI_QWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION0_BASE) +
MCDI_QWORD(outbuf,
CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION0_SIZE) - 1;
res[dev_params->res_count].flags = IORESOURCE_MEM;
dev_params->res_count++;
}
if (MCDI_QWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION1_SIZE) != 0) {
res[dev_params->res_count].start =
MCDI_QWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION1_BASE);
res[dev_params->res_count].end =
MCDI_QWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION1_BASE) +
MCDI_QWORD(outbuf,
CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION1_SIZE) - 1;
res[dev_params->res_count].flags = IORESOURCE_MEM;
dev_params->res_count++;
}
if (MCDI_QWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION2_SIZE) != 0) {
res[dev_params->res_count].start =
MCDI_QWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION2_BASE);
res[dev_params->res_count].end =
MCDI_QWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION2_BASE) +
MCDI_QWORD(outbuf,
CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION2_SIZE) - 1;
res[dev_params->res_count].flags = IORESOURCE_MEM;
dev_params->res_count++;
}
if (MCDI_QWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION3_SIZE) != 0) {
res[dev_params->res_count].start =
MCDI_QWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION3_BASE);
res[dev_params->res_count].end =
MCDI_QWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION3_BASE) +
MCDI_QWORD(outbuf,
CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION3_SIZE) - 1;
res[dev_params->res_count].flags = IORESOURCE_MEM;
dev_params->res_count++;
}
dev_params->vendor = MCDI_WORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_VENDOR_ID);
dev_params->device = MCDI_WORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_DEVICE_ID);
return 0;
}
int cdx_mcdi_reset_device(struct cdx_mcdi *cdx, u8 bus_num, u8 dev_num)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_CDX_DEVICE_RESET_IN_LEN);
int ret;
MCDI_SET_DWORD(inbuf, CDX_DEVICE_RESET_IN_BUS, bus_num);
MCDI_SET_DWORD(inbuf, CDX_DEVICE_RESET_IN_DEVICE, dev_num);
ret = cdx_mcdi_rpc(cdx, MC_CMD_CDX_DEVICE_RESET, inbuf, sizeof(inbuf),
NULL, 0, NULL);
return ret;
}
static int cdx_mcdi_ctrl_flag_get(struct cdx_mcdi *cdx, u8 bus_num,
u8 dev_num, u32 *flags)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_CDX_DEVICE_CONTROL_GET_IN_LEN);
MCDI_DECLARE_BUF(outbuf, MC_CMD_CDX_DEVICE_CONTROL_GET_OUT_LEN);
size_t outlen;
int ret;
MCDI_SET_DWORD(inbuf, CDX_DEVICE_CONTROL_GET_IN_BUS, bus_num);
MCDI_SET_DWORD(inbuf, CDX_DEVICE_CONTROL_GET_IN_DEVICE, dev_num);
ret = cdx_mcdi_rpc(cdx, MC_CMD_CDX_DEVICE_CONTROL_GET, inbuf,
sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
if (ret)
return ret;
if (outlen != MC_CMD_CDX_DEVICE_CONTROL_GET_OUT_LEN)
return -EIO;
*flags = MCDI_DWORD(outbuf, CDX_DEVICE_CONTROL_GET_OUT_FLAGS);
return 0;
}
static int cdx_mcdi_ctrl_flag_set(struct cdx_mcdi *cdx, u8 bus_num,
u8 dev_num, bool enable, int bit_pos)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_CDX_DEVICE_CONTROL_SET_IN_LEN);
u32 flags;
int ret;
/*
* Get flags and then set/reset bit at bit_pos according to
* the input params.
*/
ret = cdx_mcdi_ctrl_flag_get(cdx, bus_num, dev_num, &flags);
if (ret)
return ret;
flags = flags & (u32)(~(BIT(bit_pos)));
if (enable)
flags |= (1 << bit_pos);
MCDI_SET_DWORD(inbuf, CDX_DEVICE_CONTROL_SET_IN_BUS, bus_num);
MCDI_SET_DWORD(inbuf, CDX_DEVICE_CONTROL_SET_IN_DEVICE, dev_num);
MCDI_SET_DWORD(inbuf, CDX_DEVICE_CONTROL_SET_IN_FLAGS, flags);
ret = cdx_mcdi_rpc(cdx, MC_CMD_CDX_DEVICE_CONTROL_SET, inbuf,
sizeof(inbuf), NULL, 0, NULL);
return ret;
}
int cdx_mcdi_bus_master_enable(struct cdx_mcdi *cdx, u8 bus_num,
u8 dev_num, bool enable)
{
return cdx_mcdi_ctrl_flag_set(cdx, bus_num, dev_num, enable,
MC_CMD_CDX_DEVICE_CONTROL_SET_IN_BUS_MASTER_ENABLE_LBN);
}
|
