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Subject[PATCH v5 12/14] crypto: caam - force DMA address to 32-bit on 64-bit i.MX SoCs
Date
i.MX8 SoC still use 32-bit addresses in its CAAM implmentation, so
change all of the code to be able to handle that.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Chris Spencer <christopher.spencer@sea.co.uk>
Cc: Cory Tusar <cory.tusar@zii.aero>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Horia Geantă <horia.geanta@nxp.com>
Cc: Aymen Sghaier <aymen.sghaier@nxp.com>
Cc: Leonard Crestez <leonard.crestez@nxp.com>
Cc: linux-crypto@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
drivers/crypto/caam/caampkc.c | 8 +++----
drivers/crypto/caam/ctrl.c | 6 +++--
drivers/crypto/caam/desc_constr.h | 10 ++++++--
drivers/crypto/caam/intern.h | 2 +-
drivers/crypto/caam/pdb.h | 16 +++++++++----
drivers/crypto/caam/pkc_desc.c | 8 +++----
drivers/crypto/caam/regs.h | 39 +++++++++++++++++++++++--------
7 files changed, 62 insertions(+), 27 deletions(-)

diff --git a/drivers/crypto/caam/caampkc.c b/drivers/crypto/caam/caampkc.c
index 80574106af29..0e95ad555156 100644
--- a/drivers/crypto/caam/caampkc.c
+++ b/drivers/crypto/caam/caampkc.c
@@ -17,13 +17,13 @@
#include "sg_sw_sec4.h"
#include "caampkc.h"

-#define DESC_RSA_PUB_LEN (2 * CAAM_CMD_SZ + sizeof(struct rsa_pub_pdb))
+#define DESC_RSA_PUB_LEN (2 * CAAM_CMD_SZ + SIZEOF_RSA_PUB_PDB)
#define DESC_RSA_PRIV_F1_LEN (2 * CAAM_CMD_SZ + \
- sizeof(struct rsa_priv_f1_pdb))
+ SIZEOF_RSA_PRIV_F1_PDB)
#define DESC_RSA_PRIV_F2_LEN (2 * CAAM_CMD_SZ + \
- sizeof(struct rsa_priv_f2_pdb))
+ SIZEOF_RSA_PRIV_F2_PDB)
#define DESC_RSA_PRIV_F3_LEN (2 * CAAM_CMD_SZ + \
- sizeof(struct rsa_priv_f3_pdb))
+ SIZEOF_RSA_PRIV_F3_PDB)
#define CAAM_RSA_MAX_INPUT_SIZE 512 /* for a 4096-bit modulus */

/* buffer filled with zeros, used for padding */
diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
index e5eaaf1efe45..b309535f3157 100644
--- a/drivers/crypto/caam/ctrl.c
+++ b/drivers/crypto/caam/ctrl.c
@@ -603,11 +603,13 @@ static int caam_probe(struct platform_device *pdev)
ret = init_clocks(dev, ctrlpriv, imx_soc_match->data);
if (ret)
return ret;
+
+ caam_ptr_sz = sizeof(u32);
+ } else {
+ caam_ptr_sz = sizeof(dma_addr_t);
}
caam_imx = (bool)imx_soc_match;

- caam_ptr_sz = sizeof(dma_addr_t);
-
/* Get configuration properties from device tree */
/* First, get register page */
ctrl = of_iomap(nprop, 0);
diff --git a/drivers/crypto/caam/desc_constr.h b/drivers/crypto/caam/desc_constr.h
index 3a83a3332ba9..5602b8f192de 100644
--- a/drivers/crypto/caam/desc_constr.h
+++ b/drivers/crypto/caam/desc_constr.h
@@ -109,9 +109,15 @@ static inline void init_job_desc_pdb(u32 * const desc, u32 options,

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);
diff --git a/drivers/crypto/caam/intern.h b/drivers/crypto/caam/intern.h
index c00c7c84ec84..731b06becd9c 100644
--- a/drivers/crypto/caam/intern.h
+++ b/drivers/crypto/caam/intern.h
@@ -219,7 +219,7 @@ 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 (caam_ptr_sz != 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..68c1fd5dee5d 100644
--- a/drivers/crypto/caam/pdb.h
+++ b/drivers/crypto/caam/pdb.h
@@ -512,7 +512,9 @@ struct rsa_pub_pdb {
dma_addr_t n_dma;
dma_addr_t e_dma;
u32 f_len;
-} __packed;
+};
+
+#define SIZEOF_RSA_PUB_PDB (2 * sizeof(u32) + 4 * caam_ptr_sz)

/**
* RSA Decrypt PDB - Private Key Form #1
@@ -528,7 +530,9 @@ struct rsa_priv_f1_pdb {
dma_addr_t f_dma;
dma_addr_t n_dma;
dma_addr_t d_dma;
-} __packed;
+};
+
+#define SIZEOF_RSA_PRIV_F1_PDB (sizeof(u32) + 4 * caam_ptr_sz)

/**
* RSA Decrypt PDB - Private Key Form #2
@@ -554,7 +558,9 @@ struct rsa_priv_f2_pdb {
dma_addr_t tmp1_dma;
dma_addr_t tmp2_dma;
u32 p_q_len;
-} __packed;
+};
+
+#define SIZEOF_RSA_PRIV_F2_PDB (2 * sizeof(u32) + 7 * caam_ptr_sz)

/**
* RSA Decrypt PDB - Private Key Form #3
@@ -586,6 +592,8 @@ struct rsa_priv_f3_pdb {
dma_addr_t tmp1_dma;
dma_addr_t tmp2_dma;
u32 p_q_len;
-} __packed;
+};
+
+#define SIZEOF_RSA_PRIV_F3_PDB (2 * sizeof(u32) + 9 * caam_ptr_sz)

#endif
diff --git a/drivers/crypto/caam/pkc_desc.c b/drivers/crypto/caam/pkc_desc.c
index 2a8d87ea94bf..0d5ee762e036 100644
--- a/drivers/crypto/caam/pkc_desc.c
+++ b/drivers/crypto/caam/pkc_desc.c
@@ -13,7 +13,7 @@
/* Descriptor for RSA Public operation */
void init_rsa_pub_desc(u32 *desc, struct rsa_pub_pdb *pdb)
{
- init_job_desc_pdb(desc, 0, sizeof(*pdb));
+ init_job_desc_pdb(desc, 0, SIZEOF_RSA_PUB_PDB);
append_cmd(desc, pdb->sgf);
append_ptr(desc, pdb->f_dma);
append_ptr(desc, pdb->g_dma);
@@ -26,7 +26,7 @@ void init_rsa_pub_desc(u32 *desc, struct rsa_pub_pdb *pdb)
/* Descriptor for RSA Private operation - Private Key Form #1 */
void init_rsa_priv_f1_desc(u32 *desc, struct rsa_priv_f1_pdb *pdb)
{
- init_job_desc_pdb(desc, 0, sizeof(*pdb));
+ init_job_desc_pdb(desc, 0, SIZEOF_RSA_PRIV_F1_PDB);
append_cmd(desc, pdb->sgf);
append_ptr(desc, pdb->g_dma);
append_ptr(desc, pdb->f_dma);
@@ -39,7 +39,7 @@ void init_rsa_priv_f1_desc(u32 *desc, struct rsa_priv_f1_pdb *pdb)
/* Descriptor for RSA Private operation - Private Key Form #2 */
void init_rsa_priv_f2_desc(u32 *desc, struct rsa_priv_f2_pdb *pdb)
{
- init_job_desc_pdb(desc, 0, sizeof(*pdb));
+ init_job_desc_pdb(desc, 0, SIZEOF_RSA_PRIV_F2_PDB);
append_cmd(desc, pdb->sgf);
append_ptr(desc, pdb->g_dma);
append_ptr(desc, pdb->f_dma);
@@ -56,7 +56,7 @@ void init_rsa_priv_f2_desc(u32 *desc, struct rsa_priv_f2_pdb *pdb)
/* Descriptor for RSA Private operation - Private Key Form #3 */
void init_rsa_priv_f3_desc(u32 *desc, struct rsa_priv_f3_pdb *pdb)
{
- init_job_desc_pdb(desc, 0, sizeof(*pdb));
+ init_job_desc_pdb(desc, 0, SIZEOF_RSA_PRIV_F3_PDB);
append_cmd(desc, pdb->sgf);
append_ptr(desc, pdb->g_dma);
append_ptr(desc, pdb->f_dma);
diff --git a/drivers/crypto/caam/regs.h b/drivers/crypto/caam/regs.h
index ec49f5ba9689..3c3ad474d08f 100644
--- a/drivers/crypto/caam/regs.h
+++ b/drivers/crypto/caam/regs.h
@@ -191,7 +191,8 @@ static inline u64 caam_dma64_to_cpu(u64 value)

static inline u64 cpu_to_caam_dma(u64 value)
{
- if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT))
+ if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT) &&
+ !caam_imx)
return cpu_to_caam_dma64(value);
else
return cpu_to_caam32(value);
@@ -199,7 +200,8 @@ static inline u64 cpu_to_caam_dma(u64 value)

static inline u64 caam_dma_to_cpu(u64 value)
{
- if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT))
+ if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT) &&
+ !caam_imx)
return caam_dma64_to_cpu(value);
else
return caam32_to_cpu(value);
@@ -213,13 +215,24 @@ static inline u64 caam_dma_to_cpu(u64 value)
static inline void jr_outentry_get(void *outring, int hw_idx, dma_addr_t *desc,
u32 *jrstatus)
{
- struct {
- dma_addr_t desc;/* Pointer to completed descriptor */
- u32 jrstatus; /* Status for completed descriptor */
- } __packed *outentry = outring;

- *desc = outentry[hw_idx].desc;
- *jrstatus = outentry[hw_idx].jrstatus;
+ if (caam_imx) {
+ struct {
+ u32 desc;
+ u32 jrstatus;
+ } __packed *outentry = outring;
+
+ *desc = outentry[hw_idx].desc;
+ *jrstatus = outentry[hw_idx].jrstatus;
+ } else {
+ struct {
+ dma_addr_t desc;/* Pointer to completed descriptor */
+ u32 jrstatus; /* Status for completed descriptor */
+ } __packed *outentry = outring;
+
+ *desc = outentry[hw_idx].desc;
+ *jrstatus = outentry[hw_idx].jrstatus;
+ }
}

#define SIZEOF_JR_OUTENTRY (caam_ptr_sz + sizeof(u32))
@@ -246,9 +259,15 @@ static inline u32 jr_outentry_jrstatus(void *outring, int hw_idx)

static inline void jr_inpentry_set(void *inpring, int hw_idx, dma_addr_t val)
{
- dma_addr_t *inpentry = inpring;
+ if (caam_imx) {
+ u32 *inpentry = inpring;

- inpentry[hw_idx] = val;
+ inpentry[hw_idx] = val;
+ } else {
+ dma_addr_t *inpentry = inpring;
+
+ inpentry[hw_idx] = val;
+ }
}

#define SIZEOF_JR_INPENTRY caam_ptr_sz
--
2.21.0
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