dcdbas.h

  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
 59struct smi_cmd {
 60	__u32 magic;
 61	__u32 ebx;
 62	__u32 ecx;
 63	__u16 command_address;
 64	__u8 command_code;
 65	__u8 reserved;
 66	__u8 command_buffer[1];
 67} __attribute__ ((packed));
 68
 69struct apm_cmd {
 70	__u8 command;
 71	__s8 status;
 72	__u16 reserved;
 73	union {
 74		struct {
 75			__u8 parm[MAX_SYSMGMT_SHORTCMD_PARMBUF_LEN];
 76		} __attribute__ ((packed)) shortreq;
 77
 78		struct {
 79			__u16 num_sg_entries;
 80			struct {
 81				__u32 size;
 82				__u64 addr;
 83			} __attribute__ ((packed))
 84			    sglist[MAX_SYSMGMT_LONGCMD_SGENTRY_NUM];
 85		} __attribute__ ((packed)) longreq;
 86	} __attribute__ ((packed)) parameters;
 87} __attribute__ ((packed));
 88
 89int dcdbas_smi_request(struct smi_cmd *smi_cmd);
 90
 91struct smm_eps_table {
 92	char smm_comm_buff_anchor[4];
 93	u8 length;
 94	u8 checksum;
 95	u8 version;
 96	u64 smm_comm_buff_addr;
 97	u64 num_of_4k_pages;
 98} __packed;
 99
100struct smi_buffer {
101	u8 *virt;
102	unsigned long size;
103	dma_addr_t dma;
104};
105
106int dcdbas_smi_alloc(struct smi_buffer *smi_buffer, unsigned long size);
107void dcdbas_smi_free(struct smi_buffer *smi_buffer);
108
109#endif /* _DCDBAS_H_ */
110