From 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:44:59 +0000
Subject: [PATCH] gmac get mac form eeprom
---
kernel/drivers/crypto/caam/desc_constr.h | 99 +++++++++++++++++++++++++++++++++++++++++--------
1 files changed, 82 insertions(+), 17 deletions(-)
diff --git a/kernel/drivers/crypto/caam/desc_constr.h b/kernel/drivers/crypto/caam/desc_constr.h
index d4256fa..62ce642 100644
--- a/kernel/drivers/crypto/caam/desc_constr.h
+++ b/kernel/drivers/crypto/caam/desc_constr.h
@@ -3,6 +3,7 @@
* caam descriptor construction helper functions
*
* Copyright 2008-2012 Freescale Semiconductor, Inc.
+ * Copyright 2019 NXP
*/
#ifndef DESC_CONSTR_H
@@ -13,9 +14,41 @@
#define IMMEDIATE (1 << 23)
#define CAAM_CMD_SZ sizeof(u32)
-#define CAAM_PTR_SZ sizeof(dma_addr_t)
+#define CAAM_PTR_SZ caam_ptr_sz
+#define CAAM_PTR_SZ_MAX sizeof(dma_addr_t)
+#define CAAM_PTR_SZ_MIN sizeof(u32)
#define CAAM_DESC_BYTES_MAX (CAAM_CMD_SZ * MAX_CAAM_DESCSIZE)
-#define DESC_JOB_IO_LEN (CAAM_CMD_SZ * 5 + CAAM_PTR_SZ * 3)
+#define __DESC_JOB_IO_LEN(n) (CAAM_CMD_SZ * 5 + (n) * 3)
+#define DESC_JOB_IO_LEN __DESC_JOB_IO_LEN(CAAM_PTR_SZ)
+#define DESC_JOB_IO_LEN_MAX __DESC_JOB_IO_LEN(CAAM_PTR_SZ_MAX)
+#define DESC_JOB_IO_LEN_MIN __DESC_JOB_IO_LEN(CAAM_PTR_SZ_MIN)
+
+/*
+ * The CAAM QI hardware constructs a job descriptor which points
+ * to shared descriptor (as pointed by context_a of FQ to CAAM).
+ * When the job descriptor is executed by deco, the whole job
+ * descriptor together with shared descriptor gets loaded in
+ * deco buffer which is 64 words long (each 32-bit).
+ *
+ * The job descriptor constructed by QI hardware has layout:
+ *
+ * HEADER (1 word)
+ * Shdesc ptr (1 or 2 words)
+ * SEQ_OUT_PTR (1 word)
+ * Out ptr (1 or 2 words)
+ * Out length (1 word)
+ * SEQ_IN_PTR (1 word)
+ * In ptr (1 or 2 words)
+ * In length (1 word)
+ *
+ * The shdesc ptr is used to fetch shared descriptor contents
+ * into deco buffer.
+ *
+ * Apart from shdesc contents, the total number of words that
+ * get loaded in deco buffer are '8' or '11'. The remaining words
+ * in deco buffer can be used for storing shared descriptor.
+ */
+#define MAX_SDLEN ((CAAM_DESC_BYTES_MAX - DESC_JOB_IO_LEN_MIN) / CAAM_CMD_SZ)
#ifdef DEBUG
#define PRINT_POS do { printk(KERN_DEBUG "%02d: %s\n", desc_len(desc),\
@@ -36,6 +69,17 @@
(LDOFF_ENABLE_AUTO_NFIFO << LDST_OFFSET_SHIFT))
extern bool caam_little_end;
+extern size_t caam_ptr_sz;
+
+/*
+ * HW fetches 4 S/G table entries at a time, irrespective of how many entries
+ * are in the table. It's SW's responsibility to make sure these accesses
+ * do not have side effects.
+ */
+static inline int pad_sg_nents(int sg_nents)
+{
+ return ALIGN(sg_nents, 4);
+}
static inline int desc_len(u32 * const desc)
{
@@ -92,9 +136,15 @@
static inline void append_ptr(u32 * const desc, dma_addr_t ptr)
{
- dma_addr_t *offset = (dma_addr_t *)desc_end(desc);
+ if (caam_ptr_sz == sizeof(dma_addr_t)) {
+ dma_addr_t *offset = (dma_addr_t *)desc_end(desc);
- *offset = cpu_to_caam_dma(ptr);
+ *offset = cpu_to_caam_dma(ptr);
+ } else {
+ u32 *offset = (u32 *)desc_end(desc);
+
+ *offset = cpu_to_caam_dma(ptr);
+ }
(*desc) = cpu_to_caam32(caam32_to_cpu(*desc) +
CAAM_PTR_SZ / CAAM_CMD_SZ);
@@ -189,6 +239,7 @@
}
APPEND_CMD_RET(jump, JUMP)
APPEND_CMD_RET(move, MOVE)
+APPEND_CMD_RET(move_len, MOVE_LEN)
static inline void set_jump_tgt_here(u32 * const desc, u32 *jump_cmd)
{
@@ -327,7 +378,11 @@
u32 options) \
{ \
PRINT_POS; \
- append_cmd(desc, CMD_##op | IMMEDIATE | options | sizeof(type)); \
+ if (options & LDST_LEN_MASK) \
+ append_cmd(desc, CMD_##op | IMMEDIATE | options); \
+ else \
+ append_cmd(desc, CMD_##op | IMMEDIATE | options | \
+ sizeof(type)); \
append_cmd(desc, immediate); \
}
APPEND_CMD_RAW_IMM(load, LOAD, u32);
@@ -441,8 +496,8 @@
* functions where it is used.
* @keylen: length of the provided algorithm key, in bytes
* @keylen_pad: padded length of the provided algorithm key, in bytes
- * @key: address where algorithm key resides; virtual address if key_inline
- * is true, dma (bus) address if key_inline is false.
+ * @key_dma: dma (bus) address where algorithm key resides
+ * @key_virt: virtual address where algorithm key resides
* @key_inline: true - key can be inlined in the descriptor; false - key is
* referenced by the descriptor
*/
@@ -450,10 +505,8 @@
u32 algtype;
unsigned int keylen;
unsigned int keylen_pad;
- union {
- dma_addr_t key_dma;
- const void *key_virt;
- };
+ dma_addr_t key_dma;
+ const void *key_virt;
bool key_inline;
};
@@ -519,14 +572,26 @@
if (adata->key_inline) {
int words;
- append_operation(desc, OP_TYPE_UNI_PROTOCOL | protid |
- OP_PCL_DKP_SRC_IMM | OP_PCL_DKP_DST_IMM |
- adata->keylen);
- append_data(desc, adata->key_virt, adata->keylen);
+ if (adata->keylen > adata->keylen_pad) {
+ append_operation(desc, OP_TYPE_UNI_PROTOCOL | protid |
+ OP_PCL_DKP_SRC_PTR |
+ OP_PCL_DKP_DST_IMM | adata->keylen);
+ append_ptr(desc, adata->key_dma);
+
+ words = (ALIGN(adata->keylen_pad, CAAM_CMD_SZ) -
+ CAAM_PTR_SZ) / CAAM_CMD_SZ;
+ } else {
+ append_operation(desc, OP_TYPE_UNI_PROTOCOL | protid |
+ OP_PCL_DKP_SRC_IMM |
+ OP_PCL_DKP_DST_IMM | adata->keylen);
+ append_data(desc, adata->key_virt, adata->keylen);
+
+ words = (ALIGN(adata->keylen_pad, CAAM_CMD_SZ) -
+ ALIGN(adata->keylen, CAAM_CMD_SZ)) /
+ CAAM_CMD_SZ;
+ }
/* Reserve space in descriptor buffer for the derived key */
- words = (ALIGN(adata->keylen_pad, CAAM_CMD_SZ) -
- ALIGN(adata->keylen, CAAM_CMD_SZ)) / CAAM_CMD_SZ;
if (words)
(*desc) = cpu_to_caam32(caam32_to_cpu(*desc) + words);
} else {
--
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