xref: /openbmc/linux/include/linux/mtd/qinfo.h (revision 11399346)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __LINUX_MTD_QINFO_H
3 #define __LINUX_MTD_QINFO_H
4 
5 #include <linux/mtd/map.h>
6 #include <linux/wait.h>
7 #include <linux/spinlock.h>
8 #include <linux/delay.h>
9 #include <linux/mtd/mtd.h>
10 #include <linux/mtd/flashchip.h>
11 #include <linux/mtd/partitions.h>
12 
13 /* lpddr_private describes lpddr flash chip in memory map
14  * @ManufactId - Chip Manufacture ID
15  * @DevId - Chip Device ID
16  * @qinfo - pointer to qinfo records describing the chip
17  * @numchips - number of chips including virual RWW partitions
18  * @chipshift - Chip/partition size 2^chipshift
19  * @chips - per-chip data structure
20  */
21 struct lpddr_private {
22 	uint16_t ManufactId;
23 	uint16_t DevId;
24 	struct qinfo_chip *qinfo;
25 	int numchips;
26 	unsigned long chipshift;
27 	struct flchip chips[];
28 };
29 
30 /* qinfo_query_info structure contains request information for
31  * each qinfo record
32  * @major - major number of qinfo record
33  * @major - minor number of qinfo record
34  * @id_str - descriptive string to access the record
35  * @desc - detailed description for the qinfo record
36  */
37 struct qinfo_query_info {
38 	uint8_t	major;
39 	uint8_t	minor;
40 	char *id_str;
41 	char *desc;
42 };
43 
44 /*
45  * qinfo_chip structure contains necessary qinfo records data
46  * @DevSizeShift - Device size 2^n bytes
47  * @BufSizeShift - Program buffer size 2^n bytes
48  * @TotalBlocksNum - Total number of blocks
49  * @UniformBlockSizeShift - Uniform block size 2^UniformBlockSizeShift bytes
50  * @HWPartsNum - Number of hardware partitions
51  * @SuspEraseSupp - Suspend erase supported
52  * @SingleWordProgTime - Single word program 2^SingleWordProgTime u-sec
53  * @ProgBufferTime - Program buffer write 2^ProgBufferTime u-sec
54  * @BlockEraseTime - Block erase 2^BlockEraseTime m-sec
55  */
56 struct qinfo_chip {
57 	/* General device info */
58 	uint16_t DevSizeShift;
59 	uint16_t BufSizeShift;
60 	/* Erase block information */
61 	uint16_t TotalBlocksNum;
62 	uint16_t UniformBlockSizeShift;
63 	/* Partition information */
64 	uint16_t HWPartsNum;
65 	/* Optional features */
66 	uint16_t SuspEraseSupp;
67 	/* Operation typical time */
68 	uint16_t SingleWordProgTime;
69 	uint16_t ProgBufferTime;
70 	uint16_t BlockEraseTime;
71 };
72 
73 /* defines for fixup usage */
74 #define LPDDR_MFR_ANY		0xffff
75 #define LPDDR_ID_ANY		0xffff
76 #define NUMONYX_MFGR_ID		0x0089
77 #define R18_DEVICE_ID_1G	0x893c
78 
lpddr_build_cmd(u_long cmd,struct map_info * map)79 static inline map_word lpddr_build_cmd(u_long cmd, struct map_info *map)
80 {
81 	map_word val = { {0} };
82 	val.x[0] = cmd;
83 	return val;
84 }
85 
86 #define CMD(x) lpddr_build_cmd(x, map)
87 #define CMDVAL(cmd) cmd.x[0]
88 
89 struct mtd_info *lpddr_cmdset(struct map_info *);
90 
91 #endif
92 
93