include/linux/mtd/qinfo.h
Source file repositories/reference/linux-study-clean/include/linux/mtd/qinfo.h
File Facts
- System
- Linux kernel
- Corpus path
include/linux/mtd/qinfo.h- Extension
.h- Size
- 2553 bytes
- Lines
- 93
- Domain
- Core OS
- Bucket
- Core Kernel Interface
- Inferred role
- Core OS: implementation source
- Status
- source implementation candidate
Why This File Exists
Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
- Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/mtd/map.hlinux/wait.hlinux/spinlock.hlinux/delay.hlinux/mtd/mtd.hlinux/mtd/flashchip.hlinux/mtd/partitions.h
Detected Declarations
struct lpddr_privatestruct qinfo_query_infostruct qinfo_chipfunction lpddr_build_cmd
Annotated Snippet
struct lpddr_private {
uint16_t ManufactId;
uint16_t DevId;
struct qinfo_chip *qinfo;
int numchips;
unsigned long chipshift;
struct flchip chips[] __counted_by(numchips);
};
/* qinfo_query_info structure contains request information for
* each qinfo record
* @major - major number of qinfo record
* @major - minor number of qinfo record
* @id_str - descriptive string to access the record
* @desc - detailed description for the qinfo record
*/
struct qinfo_query_info {
uint8_t major;
uint8_t minor;
char *id_str;
char *desc;
};
/*
* qinfo_chip structure contains necessary qinfo records data
* @DevSizeShift - Device size 2^n bytes
* @BufSizeShift - Program buffer size 2^n bytes
* @TotalBlocksNum - Total number of blocks
* @UniformBlockSizeShift - Uniform block size 2^UniformBlockSizeShift bytes
* @HWPartsNum - Number of hardware partitions
* @SuspEraseSupp - Suspend erase supported
* @SingleWordProgTime - Single word program 2^SingleWordProgTime u-sec
* @ProgBufferTime - Program buffer write 2^ProgBufferTime u-sec
* @BlockEraseTime - Block erase 2^BlockEraseTime m-sec
*/
struct qinfo_chip {
/* General device info */
uint16_t DevSizeShift;
uint16_t BufSizeShift;
/* Erase block information */
uint16_t TotalBlocksNum;
uint16_t UniformBlockSizeShift;
/* Partition information */
uint16_t HWPartsNum;
/* Optional features */
uint16_t SuspEraseSupp;
/* Operation typical time */
uint16_t SingleWordProgTime;
uint16_t ProgBufferTime;
uint16_t BlockEraseTime;
};
/* defines for fixup usage */
#define LPDDR_MFR_ANY 0xffff
#define LPDDR_ID_ANY 0xffff
#define NUMONYX_MFGR_ID 0x0089
#define R18_DEVICE_ID_1G 0x893c
static inline map_word lpddr_build_cmd(u_long cmd, struct map_info *map)
{
map_word val = { {0} };
val.x[0] = cmd;
return val;
}
#define CMD(x) lpddr_build_cmd(x, map)
#define CMDVAL(cmd) cmd.x[0]
struct mtd_info *lpddr_cmdset(struct map_info *);
#endif
Annotation
- Immediate include surface: `linux/mtd/map.h`, `linux/wait.h`, `linux/spinlock.h`, `linux/delay.h`, `linux/mtd/mtd.h`, `linux/mtd/flashchip.h`, `linux/mtd/partitions.h`.
- Detected declarations: `struct lpddr_private`, `struct qinfo_query_info`, `struct qinfo_chip`, `function lpddr_build_cmd`.
- Atlas domain: Core OS / Core Kernel Interface.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.