[PATCH v2 3/4] crypto: caam - correct DMA address size for the i.MX8

From: Andrey Smirnov
Date: Fri Jun 07 2019 - 16:07:37 EST

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From: Chris Spencer <christopher.spencer@xxxxxxxxx>

The i.MX8 is arm64, but its CAAM DMA address size is 32-bits.

Signed-off-by: Aymen Sghaier <aymen.sghaier@xxxxxxx>
Signed-off-by: Franck LENORMAND <franck.lenormand@xxxxxxx>
Signed-off-by: Chris Spencer <christopher.spencer@xxxxxxxxx>
Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
Cc: Chris Spencer <christopher.spencer@xxxxxxxxx>
Cc: Cory Tusar <cory.tusar@xxxxxxxx>
Cc: Chris Healy <cphealy@xxxxxxxxx>
Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Cc: Horia GeantÄ <horia.geanta@xxxxxxx>
Cc: Aymen Sghaier <aymen.sghaier@xxxxxxx>
Cc: linux-crypto@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
drivers/crypto/caam/desc_constr.h | 24 +++++++--------
drivers/crypto/caam/intern.h | 6 ++--
drivers/crypto/caam/pdb.h | 49 ++++++++++++++++---------------
drivers/crypto/caam/regs.h | 21 +++++++++++--
4 files changed, 58 insertions(+), 42 deletions(-)

diff --git a/drivers/crypto/caam/desc_constr.h b/drivers/crypto/caam/desc_constr.h
index 2980b8ef1fb1..ab1a1c786c18 100644
--- a/drivers/crypto/caam/desc_constr.h
+++ b/drivers/crypto/caam/desc_constr.h
@@ -13,7 +13,7 @@

#define IMMEDIATE (1 << 23)
#define CAAM_CMD_SZ sizeof(u32)
-#define CAAM_PTR_SZ sizeof(dma_addr_t)
+#define CAAM_PTR_SZ sizeof(caam_dma_addr_t)
#define CAAM_DESC_BYTES_MAX (CAAM_CMD_SZ * MAX_CAAM_DESCSIZE)
#define DESC_JOB_IO_LEN (CAAM_CMD_SZ * 5 + CAAM_PTR_SZ * 3)

@@ -90,9 +90,9 @@ static inline void init_job_desc_pdb(u32 * const desc, u32 options,
init_job_desc(desc, (((pdb_len + 1) << HDR_START_IDX_SHIFT)) | options);
}

-static inline void append_ptr(u32 * const desc, dma_addr_t ptr)
+static inline void append_ptr(u32 * const desc, caam_dma_addr_t ptr)
{
- dma_addr_t *offset = (dma_addr_t *)desc_end(desc);
+ caam_dma_addr_t *offset = (caam_dma_addr_t *)desc_end(desc);

*offset = cpu_to_caam_dma(ptr);

@@ -100,7 +100,7 @@ static inline void append_ptr(u32 * const desc, dma_addr_t ptr)
CAAM_PTR_SZ / CAAM_CMD_SZ);
}

-static inline void init_job_desc_shared(u32 * const desc, dma_addr_t ptr,
+static inline void init_job_desc_shared(u32 * const desc, caam_dma_addr_t ptr,
int len, u32 options)
{
PRINT_POS;
@@ -155,7 +155,7 @@ static inline u32 *write_cmd(u32 * const desc, u32 command)
return desc + 1;
}

-static inline void append_cmd_ptr(u32 * const desc, dma_addr_t ptr, int len,
+static inline void append_cmd_ptr(u32 * const desc, caam_dma_addr_t ptr, int len,
u32 command)
{
append_cmd(desc, command | len);
@@ -163,7 +163,7 @@ static inline void append_cmd_ptr(u32 * const desc, dma_addr_t ptr, int len,
}

/* Write length after pointer, rather than inside command */
-static inline void append_cmd_ptr_extlen(u32 * const desc, dma_addr_t ptr,
+static inline void append_cmd_ptr_extlen(u32 * const desc, caam_dma_addr_t ptr,
unsigned int len, u32 command)
{
append_cmd(desc, command);
@@ -228,7 +228,7 @@ APPEND_CMD_LEN(seq_fifo_load, SEQ_FIFO_LOAD)
APPEND_CMD_LEN(seq_fifo_store, SEQ_FIFO_STORE)

#define APPEND_CMD_PTR(cmd, op) \
-static inline void append_##cmd(u32 * const desc, dma_addr_t ptr, \
+static inline void append_##cmd(u32 * const desc, caam_dma_addr_t ptr, \
unsigned int len, u32 options) \
{ \
PRINT_POS; \
@@ -239,7 +239,7 @@ APPEND_CMD_PTR(load, LOAD)
APPEND_CMD_PTR(fifo_load, FIFO_LOAD)
APPEND_CMD_PTR(fifo_store, FIFO_STORE)

-static inline void append_store(u32 * const desc, dma_addr_t ptr,
+static inline void append_store(u32 * const desc, caam_dma_addr_t ptr,
unsigned int len, u32 options)
{
u32 cmd_src;
@@ -258,7 +258,7 @@ static inline void append_store(u32 * const desc, dma_addr_t ptr,

#define APPEND_SEQ_PTR_INTLEN(cmd, op) \
static inline void append_seq_##cmd##_ptr_intlen(u32 * const desc, \
- dma_addr_t ptr, \
+ caam_dma_addr_t ptr, \
unsigned int len, \
u32 options) \
{ \
@@ -282,7 +282,7 @@ APPEND_CMD_PTR_TO_IMM(load, LOAD);
APPEND_CMD_PTR_TO_IMM(fifo_load, FIFO_LOAD);

#define APPEND_CMD_PTR_EXTLEN(cmd, op) \
-static inline void append_##cmd##_extlen(u32 * const desc, dma_addr_t ptr, \
+static inline void append_##cmd##_extlen(u32 * const desc, caam_dma_addr_t ptr, \
unsigned int len, u32 options) \
{ \
PRINT_POS; \
@@ -296,7 +296,7 @@ APPEND_CMD_PTR_EXTLEN(seq_out_ptr, SEQ_OUT_PTR)
* the size of its type
*/
#define APPEND_CMD_PTR_LEN(cmd, op, type) \
-static inline void append_##cmd(u32 * const desc, dma_addr_t ptr, \
+static inline void append_##cmd(u32 * const desc, caam_dma_addr_t ptr, \
type len, u32 options) \
{ \
PRINT_POS; \
@@ -456,7 +456,7 @@ struct alginfo {
unsigned int keylen;
unsigned int keylen_pad;
union {
- dma_addr_t key_dma;
+ caam_dma_addr_t key_dma;
const void *key_virt;
};
bool key_inline;
diff --git a/drivers/crypto/caam/intern.h b/drivers/crypto/caam/intern.h
index b0e32a91cdea..12d261e0d531 100644
--- a/drivers/crypto/caam/intern.h
+++ b/drivers/crypto/caam/intern.h
@@ -34,7 +34,7 @@ struct caam_jrentry_info {
void (*callbk)(struct device *dev, u32 *desc, u32 status, void *arg);
void *cbkarg; /* Argument per ring entry */
u32 *desc_addr_virt; /* Stored virt addr for postprocessing */
- dma_addr_t desc_addr_dma; /* Stored bus addr for done matching */
+ caam_dma_addr_t desc_addr_dma; /* Stored bus addr for done matching */
u32 desc_size; /* Stored size for postprocessing, header derived */
};

@@ -55,7 +55,7 @@ struct caam_drv_private_jr {
spinlock_t inplock ____cacheline_aligned; /* Input ring index lock */
u32 inpring_avail; /* Number of free entries in input ring */
int head; /* entinfo (s/w ring) head index */
- dma_addr_t *inpring; /* Base of input ring, alloc DMA-safe */
+ caam_dma_addr_t *inpring; /* Base of input ring, alloc DMA-safe */
int out_ring_read_index; /* Output index "tail" */
int tail; /* entinfo (s/w ring) tail index */
struct jr_outentry *outring; /* Base of output ring, DMA-safe */
@@ -133,7 +133,7 @@ static inline u64 caam_get_dma_mask(struct device *dev)
{
struct device_node *nprop = dev->of_node;

- if (sizeof(dma_addr_t) != sizeof(u64))
+ if (sizeof(caam_dma_addr_t) != sizeof(u64))
return DMA_BIT_MASK(32);

if (caam_dpaa2)
diff --git a/drivers/crypto/caam/pdb.h b/drivers/crypto/caam/pdb.h
index 810f0bef0652..128d16682feb 100644
--- a/drivers/crypto/caam/pdb.h
+++ b/drivers/crypto/caam/pdb.h
@@ -9,6 +9,7 @@
#ifndef CAAM_PDB_H
#define CAAM_PDB_H
#include "compat.h"
+#include "regs.h"

/*
* PDB- IPSec ESP Header Modification Options
@@ -507,10 +508,10 @@ struct dsa_verify_pdb {
*/
struct rsa_pub_pdb {
u32 sgf;
- dma_addr_t f_dma;
- dma_addr_t g_dma;
- dma_addr_t n_dma;
- dma_addr_t e_dma;
+ caam_dma_addr_t f_dma;
+ caam_dma_addr_t g_dma;
+ caam_dma_addr_t n_dma;
+ caam_dma_addr_t e_dma;
u32 f_len;
} __packed;

@@ -524,10 +525,10 @@ struct rsa_pub_pdb {
*/
struct rsa_priv_f1_pdb {
u32 sgf;
- dma_addr_t g_dma;
- dma_addr_t f_dma;
- dma_addr_t n_dma;
- dma_addr_t d_dma;
+ caam_dma_addr_t g_dma;
+ caam_dma_addr_t f_dma;
+ caam_dma_addr_t n_dma;
+ caam_dma_addr_t d_dma;
} __packed;

/**
@@ -546,13 +547,13 @@ struct rsa_priv_f1_pdb {
*/
struct rsa_priv_f2_pdb {
u32 sgf;
- dma_addr_t g_dma;
- dma_addr_t f_dma;
- dma_addr_t d_dma;
- dma_addr_t p_dma;
- dma_addr_t q_dma;
- dma_addr_t tmp1_dma;
- dma_addr_t tmp2_dma;
+ caam_dma_addr_t g_dma;
+ caam_dma_addr_t f_dma;
+ caam_dma_addr_t d_dma;
+ caam_dma_addr_t p_dma;
+ caam_dma_addr_t q_dma;
+ caam_dma_addr_t tmp1_dma;
+ caam_dma_addr_t tmp2_dma;
u32 p_q_len;
} __packed;

@@ -576,15 +577,15 @@ struct rsa_priv_f2_pdb {
*/
struct rsa_priv_f3_pdb {
u32 sgf;
- dma_addr_t g_dma;
- dma_addr_t f_dma;
- dma_addr_t c_dma;
- dma_addr_t p_dma;
- dma_addr_t q_dma;
- dma_addr_t dp_dma;
- dma_addr_t dq_dma;
- dma_addr_t tmp1_dma;
- dma_addr_t tmp2_dma;
+ caam_dma_addr_t g_dma;
+ caam_dma_addr_t f_dma;
+ caam_dma_addr_t c_dma;
+ caam_dma_addr_t p_dma;
+ caam_dma_addr_t q_dma;
+ caam_dma_addr_t dp_dma;
+ caam_dma_addr_t dq_dma;
+ caam_dma_addr_t tmp1_dma;
+ caam_dma_addr_t tmp2_dma;
u32 p_q_len;
} __packed;

diff --git a/drivers/crypto/caam/regs.h b/drivers/crypto/caam/regs.h
index 8591914d5c51..6e7f8d4f3f2b 100644
--- a/drivers/crypto/caam/regs.h
+++ b/drivers/crypto/caam/regs.h
@@ -137,7 +137,7 @@ static inline void clrsetbits_32(void __iomem *reg, u32 clear, u32 set)
* base + 0x0000 : least-significant 32 bits
* base + 0x0004 : most-significant 32 bits
*/
-#ifdef CONFIG_64BIT
+#if defined(CONFIG_64BIT) && !defined(CONFIG_ARCH_MXC)
static inline void wr_reg64(void __iomem *reg, u64 data)
{
if (caam_little_end)
@@ -195,7 +195,7 @@ static inline u64 caam_dma64_to_cpu(u64 value)
return caam64_to_cpu(value);
}

-#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+#if defined(CONFIG_ARCH_DMA_ADDR_T_64BIT) && !defined(CONFIG_ARCH_MXC)
#define cpu_to_caam_dma(value) cpu_to_caam_dma64(value)
#define caam_dma_to_cpu(value) caam_dma64_to_cpu(value)
#else
@@ -203,12 +203,27 @@ static inline u64 caam_dma64_to_cpu(u64 value)
#define caam_dma_to_cpu(value) caam32_to_cpu(value)
#endif /* CONFIG_ARCH_DMA_ADDR_T_64BIT */

+/*
+ * On i.MX8 boards the arch is arm64 but the CAAM dma address size is
+ * 32 bits on 8MQ and 36 bits on 8QM and 8QXP.
+ * For 8QM and 8QXP there is a configurable field PS called pointer size
+ * in the MCFGR register to switch between 32 and 64 (default 32)
+ * But this register is only accessible by the SECO and is left to its
+ * default value.
+ * Here we set the CAAM dma address size to 32 bits for all i.MX8
+ */
+#if defined(CONFIG_ARM64) && defined(CONFIG_ARCH_MXC)
+#define caam_dma_addr_t u32
+#else
+#define caam_dma_addr_t dma_addr_t
+#endif
+
/*
* jr_outentry
* Represents each entry in a JobR output ring
*/
struct jr_outentry {
- dma_addr_t desc;/* Pointer to completed descriptor */
+ caam_dma_addr_t desc;/* Pointer to completed descriptor */
u32 jrstatus; /* Status for completed descriptor */
} __packed;

--
2.21.0

Next message: Dan Williams: "Re: [PATCH v3 03/10] efi: Enumerate EFI_MEMORY_SP"
Previous message: Andrey Smirnov: "[PATCH v2 4/4] crypto: caam - always select job ring via RSR on i.MX8MQ"
In reply to: Andrey Smirnov: "[PATCH v2 4/4] crypto: caam - always select job ring via RSR on i.MX8MQ"
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