[PATCH v2 09/14] crypto: sun8i-ce: handle different error registers

Corentin Labbe
2020-04-24T14:02:54Z

Error registers are different across SoCs.
This patch handle those difference.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
.../crypto/allwinner/sun8i-ce/sun8i-ce-core.c | 58 ++++++++++++++++---
drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h | 8 +++
2 files changed, 58 insertions(+), 8 deletions(-)

diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
index b957061424a1..80f7918fbea8 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
@@ -40,7 +40,8 @@ static const struct ce_variant ce_h3_variant = {
.ce_clks = {
{ "bus", 0, 200000000 },
{ "mod", 50000000, 0 },
- }
+ },
+ .esr = ESR_H3,
};

static const struct ce_variant ce_h5_variant = {
@@ -51,7 +52,8 @@ static const struct ce_variant ce_h5_variant = {
.ce_clks = {
{ "bus", 0, 200000000 },
{ "mod", 300000000, 0 },
- }
+ },
+ .esr = ESR_H5,
};

static const struct ce_variant ce_h6_variant = {
@@ -64,7 +66,8 @@ static const struct ce_variant ce_h6_variant = {
{ "bus", 0, 200000000 },
{ "mod", 300000000, 0 },
{ "ram", 0, 400000000 },
- }
+ },
+ .esr = ESR_H6,
};

static const struct ce_variant ce_a64_variant = {
@@ -75,7 +78,8 @@ static const struct ce_variant ce_a64_variant = {
.ce_clks = {
{ "bus", 0, 200000000 },
{ "mod", 300000000, 0 },
- }
+ },
+ .esr = ESR_A64,
};

static const struct ce_variant ce_r40_variant = {
@@ -86,7 +90,8 @@ static const struct ce_variant ce_r40_variant = {
.ce_clks = {
{ "bus", 0, 200000000 },
{ "mod", 300000000, 0 },
- }
+ },
+ .esr = ESR_R40,
};

/*
@@ -102,6 +107,7 @@ int sun8i_ce_run_task(struct sun8i_ce_dev *ce, int flow, const char *name)
{
u32 v;
int err = 0;
+ struct ce_task *cet = ce->chanlist[flow].tl;

#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
ce->chanlist[flow].stat_req++;
@@ -128,19 +134,52 @@ int sun8i_ce_run_task(struct sun8i_ce_dev *ce, int flow, const char *name)
msecs_to_jiffies(ce->chanlist[flow].timeout));

if (ce->chanlist[flow].status == 0) {
- dev_err(ce->dev, "DMA timeout for %s\n", name);
+ dev_err(ce->dev, "DMA timeout for %s (tm=%d) on flow %d\n", name, ce->chanlist[flow].timeout, flow);
err = -EFAULT;
}
/* No need to lock for this read, the channel is locked so
* nothing could modify the error value for this channel
*/
v = readl(ce->base + CE_ESR);
- if (v) {
+ switch (ce->variant->esr) {
+ case ESR_H3:
+ /* Sadly, the error bit is not per flow */
+ if (v) {
+ dev_err(ce->dev, "CE ERROR: %x for flow %x\n", v, flow);
+ err = -EFAULT;
+ print_hex_dump(KERN_INFO, "TASK: ", DUMP_PREFIX_NONE, 16, 4, cet, sizeof(struct ce_task), false);
+ }
+ if (v & CE_ERR_ALGO_NOTSUP)
+ dev_err(ce->dev, "CE ERROR: algorithm not supported\n");
+ if (v & CE_ERR_DATALEN)
+ dev_err(ce->dev, "CE ERROR: data length error\n");
+ if (v & CE_ERR_KEYSRAM)
+ dev_err(ce->dev, "CE ERROR: keysram access error for AES\n");
+ break;
+ case ESR_A64:
+ case ESR_H5:
+ case ESR_R40:
v >>= (flow * 4);
+ v &= 0xF;
+ if (v) {
+ dev_err(ce->dev, "CE ERROR: %x for flow %x\n", v, flow);
+ err = -EFAULT;
+ print_hex_dump(KERN_INFO, "TASK: ", DUMP_PREFIX_NONE, 16, 4, cet, sizeof(struct ce_task), false);
+ }
+ if (v & CE_ERR_ALGO_NOTSUP)
+ dev_err(ce->dev, "CE ERROR: algorithm not supported\n");
+ if (v & CE_ERR_DATALEN)
+ dev_err(ce->dev, "CE ERROR: data length error\n");
+ if (v & CE_ERR_KEYSRAM)
+ dev_err(ce->dev, "CE ERROR: keysram access error for AES\n");
+ break;
+ case ESR_H6:
+ v >>= (flow * 8);
v &= 0xFF;
if (v) {
dev_err(ce->dev, "CE ERROR: %x for flow %x\n", v, flow);
err = -EFAULT;
+ print_hex_dump(KERN_INFO, "TASK: ", DUMP_PREFIX_NONE, 16, 4, cet, sizeof(struct ce_task), false);
}
if (v & CE_ERR_ALGO_NOTSUP)
dev_err(ce->dev, "CE ERROR: algorithm not supported\n");
@@ -150,7 +189,10 @@ int sun8i_ce_run_task(struct sun8i_ce_dev *ce, int flow, const char *name)
dev_err(ce->dev, "CE ERROR: keysram access error for AES\n");
if (v & CE_ERR_ADDR_INVALID)
dev_err(ce->dev, "CE ERROR: address invalid\n");
- }
+ if (v & CE_ERR_KEYLADDER)
+ dev_err(ce->dev, "CE ERROR: key ladder configuration error\n");
+ break;
+ }

return err;
}
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
index fe97fee74e47..ed1a91da967b 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
@@ -65,6 +65,12 @@
#define CE_ERR_ADDR_INVALID BIT(5)
#define CE_ERR_KEYLADDER BIT(6)

+#define ESR_H3 0
+#define ESR_A64 1
+#define ESR_R40 2
+#define ESR_H5 3
+#define ESR_H6 4
+
#define CE_DIE_ID_SHIFT 16
#define CE_DIE_ID_MASK 0x07

@@ -94,12 +100,14 @@ struct ce_clock {
* @has_t_dlen_in_bytes: Does the request size for cipher is in
* bytes or words
* @ce_clks: list of clocks needed by this variant
+ * @esr: The type of error register
*/
struct ce_variant {
char alg_cipher[CE_ID_CIPHER_MAX];
u32 op_mode[CE_ID_OP_MAX];
bool has_t_dlen_in_bytes;
struct ce_clock ce_clks[CE_MAX_CLOCKS];
+ int esr;
};

struct sginfo {
--
2.26.2