/* * Intel(R) Matrix Storage Manager hardware and firmware support routines * * Copyright (C) 2008 Intel Corporation * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. * * This program is distributed in the hope 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. */ #include #include /* The IMSM Capability (IMSM AHCI and ISCU OROM/EFI variable) Version Table definition */ struct imsm_orom { __u8 signature[4]; #define IMSM_OROM_SIGNATURE "$VER" #define IMSM_NVME_OROM_COMPAT_SIGNATURE "$NVM" __u8 table_ver_major; /* Currently 2 (can change with future revs) */ __u8 table_ver_minor; /* Currently 2 (can change with future revs) */ __u16 major_ver; /* Example: 8 as in 8.6.0.1020 */ __u16 minor_ver; /* Example: 6 as in 8.6.0.1020 */ __u16 hotfix_ver; /* Example: 0 as in 8.6.0.1020 */ __u16 build; /* Example: 1020 as in 8.6.0.1020 */ __u8 len; /* number of bytes in this entire table */ __u8 checksum; /* checksum of all the bytes in this table */ __u16 rlc; /* RAID Level Capability */ /* we assume the cpu is x86 as the orom should not be found * anywhere else */ #define IMSM_OROM_RLC_RAID0 (1 << 0) #define IMSM_OROM_RLC_RAID1 (1 << 1) #define IMSM_OROM_RLC_RAID10 (1 << 2) #define IMSM_OROM_RLC_RAID1E (1 << 3) #define IMSM_OROM_RLC_RAID5 (1 << 4) #define IMSM_OROM_RLC_RAID_CNG (1 << 5) __u16 sss; /* Strip Size Supported */ #define IMSM_OROM_SSS_2kB (1 << 0) #define IMSM_OROM_SSS_4kB (1 << 1) #define IMSM_OROM_SSS_8kB (1 << 2) #define IMSM_OROM_SSS_16kB (1 << 3) #define IMSM_OROM_SSS_32kB (1 << 4) #define IMSM_OROM_SSS_64kB (1 << 5) #define IMSM_OROM_SSS_128kB (1 << 6) #define IMSM_OROM_SSS_256kB (1 << 7) #define IMSM_OROM_SSS_512kB (1 << 8) #define IMSM_OROM_SSS_1MB (1 << 9) #define IMSM_OROM_SSS_2MB (1 << 10) #define IMSM_OROM_SSS_4MB (1 << 11) #define IMSM_OROM_SSS_8MB (1 << 12) #define IMSM_OROM_SSS_16MB (1 << 13) #define IMSM_OROM_SSS_32MB (1 << 14) #define IMSM_OROM_SSS_64MB (1 << 15) __u16 dpa; /* Disks Per Array supported */ #define IMSM_OROM_DISKS_PER_ARRAY 6 #define IMSM_OROM_DISKS_PER_ARRAY_NVME 12 __u16 tds; /* Total Disks Supported */ #define IMSM_OROM_TOTAL_DISKS 6 #define IMSM_OROM_TOTAL_DISKS_NVME 12 __u8 vpa; /* # Volumes Per Array supported */ #define IMSM_OROM_VOLUMES_PER_ARRAY 2 __u8 vphba; /* # Volumes Per Host Bus Adapter supported */ #define IMSM_OROM_VOLUMES_PER_HBA 4 #define IMSM_OROM_VOLUMES_PER_HBA_NVME 4 /* Attributes supported. This should map to the * attributes in the MPB. Also, lower 16 bits * should match/duplicate RLC bits above. */ __u32 attr; #define IMSM_OROM_ATTR_RAID0 IMSM_OROM_RLC_RAID0 #define IMSM_OROM_ATTR_RAID1 IMSM_OROM_RLC_RAID1 #define IMSM_OROM_ATTR_RAID10 IMSM_OROM_RLC_RAID10 #define IMSM_OROM_ATTR_RAID1E IMSM_OROM_RLC_RAID1E #define IMSM_OROM_ATTR_RAID5 IMSM_OROM_RLC_RAID5 #define IMSM_OROM_ATTR_RAID_CNG IMSM_OROM_RLC_RAID_CNG #define IMSM_OROM_ATTR_2TB_DISK (1 << 26) #define IMSM_OROM_ATTR_2TB (1 << 29) #define IMSM_OROM_ATTR_PM (1 << 30) #define IMSM_OROM_ATTR_ChecksumVerify (1 << 31) __u32 capabilities; #define IMSM_OROM_CAPABILITIES_Ext_SATA (1 << 0) #define IMSM_OROM_CAPABILITIES_TurboMemory (1 << 1) #define IMSM_OROM_CAPABILITIES_HddPassword (1 << 2) #define IMSM_OROM_CAPABILITIES_DiskCoercion (1 << 3) __u32 driver_features; #define IMSM_OROM_CAPABILITIES_HDDUnlock (1 << 0) #define IMSM_OROM_CAPABILITIES_LEDLoc (1 << 1) #define IMSM_OROM_CAPABILITIES_EnterpriseSystem (1 << 2) #define IMSM_OROM_CAPABILITIES_Zpodd (1 << 3) #define IMSM_OROM_CAPABILITIES_LargeDramCache (1 << 4) #define IMSM_OROM_CAPABILITIES_Rohi (1 << 5) #define IMSM_OROM_CAPABILITIES_ReadPatrol (1 << 6) #define IMSM_OROM_CAPABILITIES_XorHw (1 << 7) } __attribute__((packed)); static inline int imsm_orom_has_raid0(const struct imsm_orom *orom) { return !!(orom->rlc & IMSM_OROM_RLC_RAID0); } static inline int imsm_orom_has_raid1(const struct imsm_orom *orom) { return !!(orom->rlc & IMSM_OROM_RLC_RAID1); } static inline int imsm_orom_has_raid1e(const struct imsm_orom *orom) { return !!(orom->rlc & IMSM_OROM_RLC_RAID1E); } static inline int imsm_orom_has_raid10(const struct imsm_orom *orom) { return !!(orom->rlc & IMSM_OROM_RLC_RAID10); } static inline int imsm_orom_has_raid5(const struct imsm_orom *orom) { return !!(orom->rlc & IMSM_OROM_RLC_RAID5); } /** * imsm_orom_has_chunk - check if the orom supports the given chunk size * @orom: orom pointer from find_imsm_orom * @chunk: chunk size in kibibytes */ static inline int imsm_orom_has_chunk(const struct imsm_orom *orom, int chunk) { int fs = ffs(chunk); if (!fs) return 0; fs--; /* bit num to bit index */ if (chunk & (chunk-1)) return 0; /* not a power of 2 */ return !!(orom->sss & (1 << (fs - 1))); } /** * fls - find last (most-significant) bit set * @x: the word to search * The funciton is borrowed from Linux kernel code * include/asm-generic/bitops/fls.h */ static inline int fls(int x) { int r = 32; if (!x) return 0; if (!(x & 0xffff0000u)) { x <<= 16; r -= 16; } if (!(x & 0xff000000u)) { x <<= 8; r -= 8; } if (!(x & 0xf0000000u)) { x <<= 4; r -= 4; } if (!(x & 0xc0000000u)) { x <<= 2; r -= 2; } if (!(x & 0x80000000u)) { x <<= 1; r -= 1; } return r; } static inline int imsm_orom_is_enterprise(const struct imsm_orom *orom) { return !!(orom->driver_features & IMSM_OROM_CAPABILITIES_EnterpriseSystem); } static inline int imsm_orom_is_nvme(const struct imsm_orom *orom) { return memcmp(orom->signature, IMSM_NVME_OROM_COMPAT_SIGNATURE, sizeof(orom->signature)) == 0; } enum sys_dev_type { SYS_DEV_UNKNOWN = 0, SYS_DEV_SAS, SYS_DEV_SATA, SYS_DEV_NVME, SYS_DEV_MAX }; struct sys_dev { enum sys_dev_type type; char *path; char *pci_id; __u16 dev_id; __u32 class; struct sys_dev *next; }; struct efi_guid { __u8 b[16]; }; struct devid_list { __u16 devid; struct devid_list *next; }; struct orom_entry { struct imsm_orom orom; struct devid_list *devid_list; struct orom_entry *next; }; extern struct orom_entry *orom_entries; static inline char *guid_str(char *buf, struct efi_guid guid) { sprintf(buf, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x", guid.b[3], guid.b[2], guid.b[1], guid.b[0], guid.b[5], guid.b[4], guid.b[7], guid.b[6], guid.b[8], guid.b[9], guid.b[10], guid.b[11], guid.b[12], guid.b[13], guid.b[14], guid.b[15]); return buf; } char *diskfd_to_devpath(int fd); struct sys_dev *find_driver_devices(const char *bus, const char *driver); struct sys_dev *find_intel_devices(void); const struct imsm_orom *find_imsm_capability(struct sys_dev *hba); const struct imsm_orom *find_imsm_orom(void); int disk_attached_to_hba(int fd, const char *hba_path); int devt_attached_to_hba(dev_t dev, const char *hba_path); char *devt_to_devpath(dev_t dev); int path_attached_to_hba(const char *disk_path, const char *hba_path); const char *get_sys_dev_type(enum sys_dev_type); const struct orom_entry *get_orom_entry_by_device_id(__u16 dev_id); const struct imsm_orom *get_orom_by_device_id(__u16 device_id); struct sys_dev *device_by_id(__u16 device_id);