210 lines
6.5 KiB
C
210 lines
6.5 KiB
C
/*
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* Intel(R) Matrix Storage Manager hardware and firmware support routines
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*
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* Copyright (C) 2008 Intel Corporation
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <asm/types.h>
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#include <strings.h>
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/* The IMSM Capability (IMSM AHCI and ISCU OROM/EFI variable) Version Table definition */
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struct imsm_orom {
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__u8 signature[4];
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__u8 table_ver_major; /* Currently 2 (can change with future revs) */
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__u8 table_ver_minor; /* Currently 2 (can change with future revs) */
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__u16 major_ver; /* Example: 8 as in 8.6.0.1020 */
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__u16 minor_ver; /* Example: 6 as in 8.6.0.1020 */
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__u16 hotfix_ver; /* Example: 0 as in 8.6.0.1020 */
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__u16 build; /* Example: 1020 as in 8.6.0.1020 */
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__u8 len; /* number of bytes in this entire table */
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__u8 checksum; /* checksum of all the bytes in this table */
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__u16 rlc; /* RAID Level Capability */
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/* we assume the cpu is x86 as the orom should not be found
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* anywhere else
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*/
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#define IMSM_OROM_RLC_RAID0 (1 << 0)
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#define IMSM_OROM_RLC_RAID1 (1 << 1)
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#define IMSM_OROM_RLC_RAID10 (1 << 2)
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#define IMSM_OROM_RLC_RAID1E (1 << 3)
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#define IMSM_OROM_RLC_RAID5 (1 << 4)
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#define IMSM_OROM_RLC_RAID_CNG (1 << 5)
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__u16 sss; /* Strip Size Supported */
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#define IMSM_OROM_SSS_2kB (1 << 0)
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#define IMSM_OROM_SSS_4kB (1 << 1)
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#define IMSM_OROM_SSS_8kB (1 << 2)
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#define IMSM_OROM_SSS_16kB (1 << 3)
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#define IMSM_OROM_SSS_32kB (1 << 4)
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#define IMSM_OROM_SSS_64kB (1 << 5)
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#define IMSM_OROM_SSS_128kB (1 << 6)
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#define IMSM_OROM_SSS_256kB (1 << 7)
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#define IMSM_OROM_SSS_512kB (1 << 8)
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#define IMSM_OROM_SSS_1MB (1 << 9)
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#define IMSM_OROM_SSS_2MB (1 << 10)
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#define IMSM_OROM_SSS_4MB (1 << 11)
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#define IMSM_OROM_SSS_8MB (1 << 12)
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#define IMSM_OROM_SSS_16MB (1 << 13)
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#define IMSM_OROM_SSS_32MB (1 << 14)
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#define IMSM_OROM_SSS_64MB (1 << 15)
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__u16 dpa; /* Disks Per Array supported */
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#define IMSM_OROM_DISKS_PER_ARRAY 6
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__u16 tds; /* Total Disks Supported */
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#define IMSM_OROM_TOTAL_DISKS 6
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__u8 vpa; /* # Volumes Per Array supported */
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#define IMSM_OROM_VOLUMES_PER_ARRAY 2
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__u8 vphba; /* # Volumes Per Host Bus Adapter supported */
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#define IMSM_OROM_VOLUMES_PER_HBA 4
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/* Attributes supported. This should map to the
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* attributes in the MPB. Also, lower 16 bits
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* should match/duplicate RLC bits above.
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*/
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__u32 attr;
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#define IMSM_OROM_ATTR_RAID0 IMSM_OROM_RLC_RAID0
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#define IMSM_OROM_ATTR_RAID1 IMSM_OROM_RLC_RAID1
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#define IMSM_OROM_ATTR_RAID10 IMSM_OROM_RLC_RAID10
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#define IMSM_OROM_ATTR_RAID1E IMSM_OROM_RLC_RAID1E
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#define IMSM_OROM_ATTR_RAID5 IMSM_OROM_RLC_RAID5
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#define IMSM_OROM_ATTR_RAID_CNG IMSM_OROM_RLC_RAID_CNG
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#define IMSM_OROM_ATTR_2TB_DISK (1 << 26)
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#define IMSM_OROM_ATTR_2TB (1 << 29)
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#define IMSM_OROM_ATTR_PM (1 << 30)
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#define IMSM_OROM_ATTR_ChecksumVerify (1 << 31)
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__u32 capabilities;
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#define IMSM_OROM_CAPABILITIES_Ext_SATA (1 << 0)
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#define IMSM_OROM_CAPABILITIES_TurboMemory (1 << 1)
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#define IMSM_OROM_CAPABILITIES_HddPassword (1 << 2)
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#define IMSM_OROM_CAPABILITIES_DiskCoercion (1 << 3)
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__u32 driver_features;
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#define IMSM_OROM_CAPABILITIES_HDDUnlock (1 << 0)
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#define IMSM_OROM_CAPABILITIES_LEDLoc (1 << 1)
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#define IMSM_OROM_CAPABILITIES_EnterpriseSystem (1 << 2)
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#define IMSM_OROM_CAPABILITIES_Zpodd (1 << 3)
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#define IMSM_OROM_CAPABILITIES_LargeDramCache (1 << 4)
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#define IMSM_OROM_CAPABILITIES_Rohi (1 << 5)
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#define IMSM_OROM_CAPABILITIES_ReadPatrol (1 << 6)
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#define IMSM_OROM_CAPABILITIES_XorHw (1 << 7)
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} __attribute__((packed));
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static inline int imsm_orom_has_raid0(const struct imsm_orom *orom)
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{
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return !!(orom->rlc & IMSM_OROM_RLC_RAID0);
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}
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static inline int imsm_orom_has_raid1(const struct imsm_orom *orom)
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{
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return !!(orom->rlc & IMSM_OROM_RLC_RAID1);
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}
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static inline int imsm_orom_has_raid1e(const struct imsm_orom *orom)
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{
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return !!(orom->rlc & IMSM_OROM_RLC_RAID1E);
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}
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static inline int imsm_orom_has_raid10(const struct imsm_orom *orom)
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{
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return !!(orom->rlc & IMSM_OROM_RLC_RAID10);
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}
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static inline int imsm_orom_has_raid5(const struct imsm_orom *orom)
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{
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return !!(orom->rlc & IMSM_OROM_RLC_RAID5);
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}
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/**
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* imsm_orom_has_chunk - check if the orom supports the given chunk size
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* @orom: orom pointer from find_imsm_orom
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* @chunk: chunk size in kibibytes
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*/
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static inline int imsm_orom_has_chunk(const struct imsm_orom *orom, int chunk)
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{
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int fs = ffs(chunk);
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if (!fs)
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return 0;
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fs--; /* bit num to bit index */
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if (chunk & (chunk-1))
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return 0; /* not a power of 2 */
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return !!(orom->sss & (1 << (fs - 1)));
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}
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/**
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* fls - find last (most-significant) bit set
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* @x: the word to search
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* The funciton is borrowed from Linux kernel code
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* include/asm-generic/bitops/fls.h
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*/
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static inline int fls(int x)
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{
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int r = 32;
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if (!x)
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return 0;
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if (!(x & 0xffff0000u)) {
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x <<= 16;
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r -= 16;
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}
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if (!(x & 0xff000000u)) {
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x <<= 8;
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r -= 8;
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}
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if (!(x & 0xf0000000u)) {
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x <<= 4;
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r -= 4;
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}
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if (!(x & 0xc0000000u)) {
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x <<= 2;
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r -= 2;
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}
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if (!(x & 0x80000000u)) {
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x <<= 1;
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r -= 1;
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}
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return r;
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}
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enum sys_dev_type {
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SYS_DEV_UNKNOWN = 0,
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SYS_DEV_SAS,
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SYS_DEV_SATA,
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SYS_DEV_MAX
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};
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struct sys_dev {
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enum sys_dev_type type;
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char *path;
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char *pci_id;
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__u16 dev_id;
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struct sys_dev *next;
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};
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struct efi_guid {
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__u8 b[16];
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};
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static inline char *guid_str(char *buf, struct efi_guid guid)
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{
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sprintf(buf, "%02x%02x%02x%02x-%02x%02x-%02x%02x-"
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"%02x%02x-%02x%02x%02x%02x%02x%02x",
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guid.b[3], guid.b[2], guid.b[1], guid.b[0],
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guid.b[5], guid.b[4], guid.b[7], guid.b[6],
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guid.b[8], guid.b[9], guid.b[10], guid.b[11],
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guid.b[12], guid.b[13], guid.b[14], guid.b[15]);
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return buf;
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}
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char *diskfd_to_devpath(int fd);
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struct sys_dev *find_driver_devices(const char *bus, const char *driver);
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struct sys_dev *find_intel_devices(void);
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const struct imsm_orom *find_imsm_capability(enum sys_dev_type hba_id);
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const struct imsm_orom *find_imsm_orom(void);
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int disk_attached_to_hba(int fd, const char *hba_path);
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char *devt_to_devpath(dev_t dev);
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int path_attached_to_hba(const char *disk_path, const char *hba_path);
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const char *get_sys_dev_type(enum sys_dev_type);
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