linux-kernel - [PATCH 17/21] mtd: spinand: Define octal read from cache operations

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250307-winbond-6-14-rc1-octal-v1-17-45c1e074ad74@bootlin.com>
Date: Fri, 07 Mar 2025 16:08:36 +0100
From: Miquel Raynal <miquel.raynal@...tlin.com>
To: Richard Weinberger <richard@....at>, 
 Vignesh Raghavendra <vigneshr@...com>, Santhosh Kumar K <s-k6@...com>
Cc: Tudor Ambarus <tudor.ambarus@...aro.org>, 
 Pratyush Yadav <pratyush@...nel.org>, Michael Walle <michael@...le.cc>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 Steam Lin <stlin2@...bond.com>, linux-mtd@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, Miquel Raynal <miquel.raynal@...tlin.com>
Subject: [PATCH 17/21] mtd: spinand: Define octal read from cache
 operations

SPI NAND chips may support octal read from cache transfers. List the
opcodes by defining the relevant macros describing these operations.

Controllers supporting operations mixing SDR and DTR operations might even
leverage octal DTR data I/O transfers.

Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
---
 include/linux/mtd/spinand.h | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/include/linux/mtd/spinand.h b/include/linux/mtd/spinand.h
index 148e2cddeed4fad6b71e74e3a343b5409814b177..ed02fa891d946c71e73d349c605447cbea48ebf9 100644
--- a/include/linux/mtd/spinand.h
+++ b/include/linux/mtd/spinand.h
@@ -170,6 +170,27 @@
 		   SPI_MEM_DTR_OP_DATA_IN(len, buf, 4),			\
 		   SPI_MEM_OP_MAX_FREQ(freq))
 
+#define SPINAND_PAGE_READ_FROM_CACHE_1S_1S_8S_OP(addr, ndummy, buf, len, freq) \
+	SPI_MEM_OP(SPI_MEM_OP_CMD(0x8b, 1),				\
+		   SPI_MEM_OP_ADDR(2, addr, 1),				\
+		   SPI_MEM_OP_DUMMY(ndummy, 1),				\
+		   SPI_MEM_OP_DATA_IN(len, buf, 8),			\
+		   SPI_MEM_OP_MAX_FREQ(freq))
+
+#define SPINAND_PAGE_READ_FROM_CACHE_1S_8S_8S_OP(addr, ndummy, buf, len, freq) \
+	SPI_MEM_OP(SPI_MEM_OP_CMD(0xcb, 1),				\
+		   SPI_MEM_OP_ADDR(2, addr, 8),				\
+		   SPI_MEM_OP_DUMMY(ndummy, 8),				\
+		   SPI_MEM_OP_DATA_IN(len, buf, 8),			\
+		   SPI_MEM_OP_MAX_FREQ(freq))
+
+#define SPINAND_PAGE_READ_FROM_CACHE_1S_1D_8D_OP(addr, ndummy, buf, len, freq) \
+	SPI_MEM_OP(SPI_MEM_OP_CMD(0x9d, 1),				\
+		   SPI_MEM_DTR_OP_ADDR(2, addr, 1),			\
+		   SPI_MEM_DTR_OP_DUMMY(ndummy, 1),			\
+		   SPI_MEM_DTR_OP_DATA_IN(len, buf, 8),			\
+		   SPI_MEM_OP_MAX_FREQ(freq))
+
 #define SPINAND_PROG_EXEC_1S_1S_0_OP(addr)				\
 	SPI_MEM_OP(SPI_MEM_OP_CMD(0x10, 1),				\
 		   SPI_MEM_OP_ADDR(3, addr, 1),				\

-- 
2.48.1