forked from Minki/linux
SFI: create linux/sfi.h
include/linux/include/sfi.h defines everything that customers of SFI need to know in order to use the SFI suport in the kernel. The primary API is sfi_table_parse(), where a driver or another part of the kernel can supply a handler to parse the named table. sfi.h also includes the currently defined table signatures and table formats. Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Feng Tang
Len Brown
parent
6349d9979b
commit
117a9ac777
206
include/linux/sfi.h
Normal file
206
include/linux/sfi.h
Normal file
@ -0,0 +1,206 @@
|
||||
/* sfi.h Simple Firmware Interface */
|
||||
|
||||
/*
|
||||
|
||||
This file is provided under a dual BSD/GPLv2 license. When using or
|
||||
redistributing this file, you may do so under either license.
|
||||
|
||||
GPL LICENSE SUMMARY
|
||||
|
||||
Copyright(c) 2009 Intel Corporation. All rights reserved.
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of version 2 of the GNU General Public License as
|
||||
published by the Free Software Foundation.
|
||||
|
||||
This program is distributed in the hope that it will be useful, but
|
||||
WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
The full GNU General Public License is included in this distribution
|
||||
in the file called LICENSE.GPL.
|
||||
|
||||
BSD LICENSE
|
||||
|
||||
Copyright(c) 2009 Intel Corporation. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions
|
||||
are met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above copyright
|
||||
notice, this list of conditions and the following disclaimer in
|
||||
the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
* Neither the name of Intel Corporation nor the names of its
|
||||
contributors may be used to endorse or promote products derived
|
||||
from this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
*/
|
||||
|
||||
#ifndef _LINUX_SFI_H
|
||||
#define _LINUX_SFI_H
|
||||
|
||||
/* Table signatures reserved by the SFI specification */
|
||||
#define SFI_SIG_SYST "SYST"
|
||||
#define SFI_SIG_FREQ "FREQ"
|
||||
#define SFI_SIG_IDLE "IDLE"
|
||||
#define SFI_SIG_CPUS "CPUS"
|
||||
#define SFI_SIG_MTMR "MTMR"
|
||||
#define SFI_SIG_MRTC "MRTC"
|
||||
#define SFI_SIG_MMAP "MMAP"
|
||||
#define SFI_SIG_APIC "APIC"
|
||||
#define SFI_SIG_XSDT "XSDT"
|
||||
#define SFI_SIG_WAKE "WAKE"
|
||||
#define SFI_SIG_SPIB "SPIB"
|
||||
#define SFI_SIG_I2CB "I2CB"
|
||||
#define SFI_SIG_GPEM "GPEM"
|
||||
|
||||
#define SFI_SIGNATURE_SIZE 4
|
||||
#define SFI_OEM_ID_SIZE 6
|
||||
#define SFI_OEM_TABLE_ID_SIZE 8
|
||||
|
||||
#define SFI_SYST_SEARCH_BEGIN 0x000E0000
|
||||
#define SFI_SYST_SEARCH_END 0x000FFFFF
|
||||
|
||||
#define SFI_GET_NUM_ENTRIES(ptable, entry_type) \
|
||||
((ptable->header.len - sizeof(struct sfi_table_header)) / \
|
||||
(sizeof(entry_type)))
|
||||
/*
|
||||
* Table structures must be byte-packed to match the SFI specification,
|
||||
* as they are provided by the BIOS.
|
||||
*/
|
||||
struct sfi_table_header {
|
||||
char sig[SFI_SIGNATURE_SIZE];
|
||||
u32 len;
|
||||
u8 rev;
|
||||
u8 csum;
|
||||
char oem_id[SFI_OEM_ID_SIZE];
|
||||
char oem_table_id[SFI_OEM_TABLE_ID_SIZE];
|
||||
} __packed;
|
||||
|
||||
struct sfi_table_simple {
|
||||
struct sfi_table_header header;
|
||||
u64 pentry[1];
|
||||
} __packed;
|
||||
|
||||
/* Comply with UEFI spec 2.1 */
|
||||
struct sfi_mem_entry {
|
||||
u32 type;
|
||||
u64 phys_start;
|
||||
u64 virt_start;
|
||||
u64 pages;
|
||||
u64 attrib;
|
||||
} __packed;
|
||||
|
||||
struct sfi_cpu_table_entry {
|
||||
u32 apic_id;
|
||||
} __packed;
|
||||
|
||||
struct sfi_cstate_table_entry {
|
||||
u32 hint; /* MWAIT hint */
|
||||
u32 latency; /* latency in ms */
|
||||
} __packed;
|
||||
|
||||
struct sfi_apic_table_entry {
|
||||
u64 phys_addr; /* phy base addr for APIC reg */
|
||||
} __packed;
|
||||
|
||||
struct sfi_freq_table_entry {
|
||||
u32 freq_mhz; /* in MHZ */
|
||||
u32 latency; /* transition latency in ms */
|
||||
u32 ctrl_val; /* value to write to PERF_CTL */
|
||||
} __packed;
|
||||
|
||||
struct sfi_wake_table_entry {
|
||||
u64 phys_addr; /* pointer to where the wake vector locates */
|
||||
} __packed;
|
||||
|
||||
struct sfi_timer_table_entry {
|
||||
u64 phys_addr; /* phy base addr for the timer */
|
||||
u32 freq_hz; /* in HZ */
|
||||
u32 irq;
|
||||
} __packed;
|
||||
|
||||
struct sfi_rtc_table_entry {
|
||||
u64 phys_addr; /* phy base addr for the RTC */
|
||||
u32 irq;
|
||||
} __packed;
|
||||
|
||||
struct sfi_spi_table_entry {
|
||||
u16 host_num; /* attached to host 0, 1...*/
|
||||
u16 cs; /* chip select */
|
||||
u16 irq_info;
|
||||
char name[16];
|
||||
u8 dev_info[10];
|
||||
} __packed;
|
||||
|
||||
struct sfi_i2c_table_entry {
|
||||
u16 host_num;
|
||||
u16 addr; /* slave addr */
|
||||
u16 irq_info;
|
||||
char name[16];
|
||||
u8 dev_info[10];
|
||||
} __packed;
|
||||
|
||||
struct sfi_gpe_table_entry {
|
||||
u16 logical_id; /* logical id */
|
||||
u16 phys_id; /* physical GPE id */
|
||||
} __packed;
|
||||
|
||||
|
||||
typedef int (*sfi_table_handler) (struct sfi_table_header *table);
|
||||
|
||||
#ifdef CONFIG_SFI
|
||||
extern void __init sfi_init(void);
|
||||
extern int __init sfi_platform_init(void);
|
||||
extern void __init sfi_init_late(void);
|
||||
extern int sfi_table_parse(char *signature, char *oem_id, char *oem_table_id,
|
||||
sfi_table_handler handler);
|
||||
|
||||
extern int sfi_disabled;
|
||||
static inline void disable_sfi(void)
|
||||
{
|
||||
sfi_disabled = 1;
|
||||
}
|
||||
|
||||
#else /* !CONFIG_SFI */
|
||||
|
||||
static inline void sfi_init(void)
|
||||
{
|
||||
}
|
||||
|
||||
static inline void sfi_init_late(void)
|
||||
{
|
||||
}
|
||||
|
||||
#define sfi_disabled 0
|
||||
|
||||
static inline int sfi_table_parse(char *signature, char *oem_id,
|
||||
char *oem_table_id,
|
||||
sfi_table_handler handler)
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
|
||||
#endif /* !CONFIG_SFI */
|
||||
|
||||
#endif /*_LINUX_SFI_H*/
|
||||
Loading…
Reference in New Issue
Block a user