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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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f1a9be986c
Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct lpddr_private. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Miquel Raynal <miquel.raynal@bootlin.com> Cc: Richard Weinberger <richard@nod.at> Cc: Vignesh Raghavendra <vigneshr@ti.com> Cc: linux-mtd@lists.infradead.org Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20230915201159.never.112-kees@kernel.org
93 lines
2.5 KiB
C
93 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __LINUX_MTD_QINFO_H
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#define __LINUX_MTD_QINFO_H
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#include <linux/mtd/map.h>
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#include <linux/wait.h>
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#include <linux/spinlock.h>
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#include <linux/delay.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/flashchip.h>
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#include <linux/mtd/partitions.h>
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/* lpddr_private describes lpddr flash chip in memory map
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* @ManufactId - Chip Manufacture ID
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* @DevId - Chip Device ID
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* @qinfo - pointer to qinfo records describing the chip
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* @numchips - number of chips including virual RWW partitions
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* @chipshift - Chip/partition size 2^chipshift
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* @chips - per-chip data structure
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*/
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struct lpddr_private {
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uint16_t ManufactId;
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uint16_t DevId;
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struct qinfo_chip *qinfo;
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int numchips;
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unsigned long chipshift;
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struct flchip chips[] __counted_by(numchips);
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};
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/* qinfo_query_info structure contains request information for
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* each qinfo record
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* @major - major number of qinfo record
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* @major - minor number of qinfo record
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* @id_str - descriptive string to access the record
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* @desc - detailed description for the qinfo record
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*/
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struct qinfo_query_info {
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uint8_t major;
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uint8_t minor;
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char *id_str;
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char *desc;
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};
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/*
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* qinfo_chip structure contains necessary qinfo records data
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* @DevSizeShift - Device size 2^n bytes
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* @BufSizeShift - Program buffer size 2^n bytes
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* @TotalBlocksNum - Total number of blocks
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* @UniformBlockSizeShift - Uniform block size 2^UniformBlockSizeShift bytes
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* @HWPartsNum - Number of hardware partitions
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* @SuspEraseSupp - Suspend erase supported
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* @SingleWordProgTime - Single word program 2^SingleWordProgTime u-sec
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* @ProgBufferTime - Program buffer write 2^ProgBufferTime u-sec
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* @BlockEraseTime - Block erase 2^BlockEraseTime m-sec
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*/
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struct qinfo_chip {
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/* General device info */
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uint16_t DevSizeShift;
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uint16_t BufSizeShift;
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/* Erase block information */
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uint16_t TotalBlocksNum;
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uint16_t UniformBlockSizeShift;
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/* Partition information */
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uint16_t HWPartsNum;
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/* Optional features */
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uint16_t SuspEraseSupp;
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/* Operation typical time */
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uint16_t SingleWordProgTime;
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uint16_t ProgBufferTime;
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uint16_t BlockEraseTime;
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};
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/* defines for fixup usage */
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#define LPDDR_MFR_ANY 0xffff
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#define LPDDR_ID_ANY 0xffff
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#define NUMONYX_MFGR_ID 0x0089
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#define R18_DEVICE_ID_1G 0x893c
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static inline map_word lpddr_build_cmd(u_long cmd, struct map_info *map)
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{
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map_word val = { {0} };
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val.x[0] = cmd;
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return val;
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}
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#define CMD(x) lpddr_build_cmd(x, map)
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#define CMDVAL(cmd) cmd.x[0]
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struct mtd_info *lpddr_cmdset(struct map_info *);
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#endif
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