1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * dcdbas.h: Definitions for Dell Systems Management Base driver
4 *
5 * Copyright (C) 1995-2005 Dell Inc.
6 */
7
8#ifndef _DCDBAS_H_
9#define _DCDBAS_H_
10
11#include <linux/device.h>
12#include <linux/sysfs.h>
13#include <linux/types.h>
14
15#define MAX_SMI_DATA_BUF_SIZE (256 * 1024)
16
17#define HC_ACTION_NONE (0)
18#define HC_ACTION_HOST_CONTROL_POWEROFF BIT(1)
19#define HC_ACTION_HOST_CONTROL_POWERCYCLE BIT(2)
20
21#define HC_SMITYPE_NONE (0)
22#define HC_SMITYPE_TYPE1 (1)
23#define HC_SMITYPE_TYPE2 (2)
24#define HC_SMITYPE_TYPE3 (3)
25
26#define ESM_APM_CMD (0x0A0)
27#define ESM_APM_POWER_CYCLE (0x10)
28#define ESM_STATUS_CMD_UNSUCCESSFUL (-1)
29
30#define CMOS_BASE_PORT (0x070)
31#define CMOS_PAGE1_INDEX_PORT (0)
32#define CMOS_PAGE1_DATA_PORT (1)
33#define CMOS_PAGE2_INDEX_PORT_PIIX4 (2)
34#define CMOS_PAGE2_DATA_PORT_PIIX4 (3)
35#define PE1400_APM_CONTROL_PORT (0x0B0)
36#define PCAT_APM_CONTROL_PORT (0x0B2)
37#define PCAT_APM_STATUS_PORT (0x0B3)
38#define PE1300_CMOS_CMD_STRUCT_PTR (0x38)
39#define PE1400_CMOS_CMD_STRUCT_PTR (0x70)
40
41#define MAX_SYSMGMT_SHORTCMD_PARMBUF_LEN (14)
42#define MAX_SYSMGMT_LONGCMD_SGENTRY_NUM (16)
43
44#define TIMEOUT_USEC_SHORT_SEMA_BLOCKING (10000)
45#define EXPIRED_TIMER (0)
46
47#define SMI_CMD_MAGIC (0x534D4931)
48#define SMM_EPS_SIG "$SCB"
49
50#define DCDBAS_DEV_ATTR_RW(_name) \
51 DEVICE_ATTR(_name,0600,_name##_show,_name##_store);
52
53#define DCDBAS_DEV_ATTR_RO(_name) \
54 DEVICE_ATTR(_name,0400,_name##_show,NULL);
55
56#define DCDBAS_DEV_ATTR_WO(_name) \
57 DEVICE_ATTR(_name,0200,NULL,_name##_store);
58
59#define DCDBAS_BIN_ATTR_RW(_name) \
60struct bin_attribute bin_attr_##_name = { \
61 .attr = { .name = __stringify(_name), \
62 .mode = 0600 }, \
63 .read = _name##_read, \
64 .write = _name##_write, \
65}
66
67struct smi_cmd {
68 __u32 magic;
69 __u32 ebx;
70 __u32 ecx;
71 __u16 command_address;
72 __u8 command_code;
73 __u8 reserved;
74 __u8 command_buffer[1];
75} __attribute__ ((packed));
76
77struct apm_cmd {
78 __u8 command;
79 __s8 status;
80 __u16 reserved;
81 union {
82 struct {
83 __u8 parm[MAX_SYSMGMT_SHORTCMD_PARMBUF_LEN];
84 } __attribute__ ((packed)) shortreq;
85
86 struct {
87 __u16 num_sg_entries;
88 struct {
89 __u32 size;
90 __u64 addr;
91 } __attribute__ ((packed))
92 sglist[MAX_SYSMGMT_LONGCMD_SGENTRY_NUM];
93 } __attribute__ ((packed)) longreq;
94 } __attribute__ ((packed)) parameters;
95} __attribute__ ((packed));
96
97int dcdbas_smi_request(struct smi_cmd *smi_cmd);
98
99struct smm_eps_table {
100 char smm_comm_buff_anchor[4];
101 u8 length;
102 u8 checksum;
103 u8 version;
104 u64 smm_comm_buff_addr;
105 u64 num_of_4k_pages;
106} __packed;
107
108struct smi_buffer {
109 u8 *virt;
110 unsigned long size;
111 dma_addr_t dma;
112};
113
114int dcdbas_smi_alloc(struct smi_buffer *smi_buffer, unsigned long size);
115void dcdbas_smi_free(struct smi_buffer *smi_buffer);
116
117#endif /* _DCDBAS_H_ */
118
119

source code of linux/drivers/platform/x86/dell/dcdbas.h