xref: /linux/drivers/platform/x86/dell/dcdbas.h (revision 4f2c0a4acffbec01079c28f839422e64ddeff004)
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) \
60 struct bin_attribute bin_attr_##_name = { \
61 	.attr =  { .name = __stringify(_name), \
62 		   .mode = 0600 }, \
63 	.read =  _name##_read, \
64 	.write = _name##_write, \
65 }
66 
67 struct 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 
77 struct 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 
97 int dcdbas_smi_request(struct smi_cmd *smi_cmd);
98 
99 struct 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 
108 struct smi_buffer {
109 	u8 *virt;
110 	unsigned long size;
111 	dma_addr_t dma;
112 };
113 
114 int dcdbas_smi_alloc(struct smi_buffer *smi_buffer, unsigned long size);
115 void dcdbas_smi_free(struct smi_buffer *smi_buffer);
116 
117 #endif /* _DCDBAS_H_ */
118 
119