--- /dev/null
+From 62134842498927a0fcc19798a615340a7a6a9e62 Mon Sep 17 00:00:00 2001
+From: Eneas U de Queiroz <cotequeiroz@gmail.com>
+Date: Mon, 28 Oct 2019 15:17:19 -0300
+Subject: [PATCH] crypto: qce - allow building only hashes/ciphers
+
+Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
+
+--- a/drivers/crypto/Kconfig
++++ b/drivers/crypto/Kconfig
+@@ -573,6 +573,14 @@ config CRYPTO_DEV_QCE
+ tristate "Qualcomm crypto engine accelerator"
+ depends on ARCH_QCOM || COMPILE_TEST
+ depends on HAS_IOMEM
++ help
++ This driver supports Qualcomm crypto engine accelerator
++ hardware. To compile this driver as a module, choose M here. The
++ module will be called qcrypto.
++
++config CRYPTO_DEV_QCE_SKCIPHER
++ bool
++ depends on CRYPTO_DEV_QCE
+ select CRYPTO_AES
+ select CRYPTO_DES
+ select CRYPTO_ECB
+@@ -580,10 +588,57 @@ config CRYPTO_DEV_QCE
+ select CRYPTO_XTS
+ select CRYPTO_CTR
+ select CRYPTO_BLKCIPHER
++
++config CRYPTO_DEV_QCE_SHA
++ bool
++ depends on CRYPTO_DEV_QCE
++
++choice
++ prompt "Algorithms enabled for QCE acceleration"
++ default CRYPTO_DEV_QCE_ENABLE_ALL
++ depends on CRYPTO_DEV_QCE
+ help
+- This driver supports Qualcomm crypto engine accelerator
+- hardware. To compile this driver as a module, choose M here. The
+- module will be called qcrypto.
++ This option allows to choose whether to build support for all algorihtms
++ (default), hashes-only, or skciphers-only.
++
++ The QCE engine does not appear to scale as well as the CPU to handle
++ multiple crypto requests. While the ipq40xx chips have 4-core CPUs, the
++ QCE handles only 2 requests in parallel.
++
++ Ipsec throughput seems to improve when disabling either family of
++ algorithms, sharing the load with the CPU. Enabling skciphers-only
++ appears to work best.
++
++ config CRYPTO_DEV_QCE_ENABLE_ALL
++ bool "All supported algorithms"
++ select CRYPTO_DEV_QCE_SKCIPHER
++ select CRYPTO_DEV_QCE_SHA
++ help
++ Enable all supported algorithms:
++ - AES (CBC, CTR, ECB, XTS)
++ - 3DES (CBC, ECB)
++ - DES (CBC, ECB)
++ - SHA1, HMAC-SHA1
++ - SHA256, HMAC-SHA256
++
++ config CRYPTO_DEV_QCE_ENABLE_SKCIPHER
++ bool "Symmetric-key ciphers only"
++ select CRYPTO_DEV_QCE_SKCIPHER
++ help
++ Enable symmetric-key ciphers only:
++ - AES (CBC, CTR, ECB, XTS)
++ - 3DES (ECB, CBC)
++ - DES (ECB, CBC)
++
++ config CRYPTO_DEV_QCE_ENABLE_SHA
++ bool "Hash/HMAC only"
++ select CRYPTO_DEV_QCE_SHA
++ help
++ Enable hashes/HMAC algorithms only:
++ - SHA1, HMAC-SHA1
++ - SHA256, HMAC-SHA256
++
++endchoice
+
+ config CRYPTO_DEV_QCE_SW_MAX_LEN
+ int "Default maximum request size to use software for AES"
+--- a/drivers/crypto/qce/Makefile
++++ b/drivers/crypto/qce/Makefile
+@@ -2,6 +2,7 @@
+ obj-$(CONFIG_CRYPTO_DEV_QCE) += qcrypto.o
+ qcrypto-objs := core.o \
+ common.o \
+- dma.o \
+- sha.o \
+- skcipher.o
++ dma.o
++
++qcrypto-$(CONFIG_CRYPTO_DEV_QCE_SHA) += sha.o
++qcrypto-$(CONFIG_CRYPTO_DEV_QCE_SKCIPHER) += skcipher.o
+--- a/drivers/crypto/qce/common.c
++++ b/drivers/crypto/qce/common.c
+@@ -51,52 +51,56 @@ qce_clear_array(struct qce_device *qce,
+ qce_write(qce, offset + i * sizeof(u32), 0);
+ }
+
+-static u32 qce_encr_cfg(unsigned long flags, u32 aes_key_size)
++static u32 qce_config_reg(struct qce_device *qce, int little)
+ {
+- u32 cfg = 0;
++ u32 beats = (qce->burst_size >> 3) - 1;
++ u32 pipe_pair = qce->pipe_pair_id;
++ u32 config;
+
+- if (IS_AES(flags)) {
+- if (aes_key_size == AES_KEYSIZE_128)
+- cfg |= ENCR_KEY_SZ_AES128 << ENCR_KEY_SZ_SHIFT;
+- else if (aes_key_size == AES_KEYSIZE_256)
+- cfg |= ENCR_KEY_SZ_AES256 << ENCR_KEY_SZ_SHIFT;
+- }
++ config = (beats << REQ_SIZE_SHIFT) & REQ_SIZE_MASK;
++ config |= BIT(MASK_DOUT_INTR_SHIFT) | BIT(MASK_DIN_INTR_SHIFT) |
++ BIT(MASK_OP_DONE_INTR_SHIFT) | BIT(MASK_ERR_INTR_SHIFT);
++ config |= (pipe_pair << PIPE_SET_SELECT_SHIFT) & PIPE_SET_SELECT_MASK;
++ config &= ~HIGH_SPD_EN_N_SHIFT;
+
+- if (IS_AES(flags))
+- cfg |= ENCR_ALG_AES << ENCR_ALG_SHIFT;
+- else if (IS_DES(flags) || IS_3DES(flags))
+- cfg |= ENCR_ALG_DES << ENCR_ALG_SHIFT;
++ if (little)
++ config |= BIT(LITTLE_ENDIAN_MODE_SHIFT);
+
+- if (IS_DES(flags))
+- cfg |= ENCR_KEY_SZ_DES << ENCR_KEY_SZ_SHIFT;
++ return config;
++}
+
+- if (IS_3DES(flags))
+- cfg |= ENCR_KEY_SZ_3DES << ENCR_KEY_SZ_SHIFT;
++void qce_cpu_to_be32p_array(__be32 *dst, const u8 *src, unsigned int len)
++{
++ __be32 *d = dst;
++ const u8 *s = src;
++ unsigned int n;
+
+- switch (flags & QCE_MODE_MASK) {
+- case QCE_MODE_ECB:
+- cfg |= ENCR_MODE_ECB << ENCR_MODE_SHIFT;
+- break;
+- case QCE_MODE_CBC:
+- cfg |= ENCR_MODE_CBC << ENCR_MODE_SHIFT;
+- break;
+- case QCE_MODE_CTR:
+- cfg |= ENCR_MODE_CTR << ENCR_MODE_SHIFT;
+- break;
+- case QCE_MODE_XTS:
+- cfg |= ENCR_MODE_XTS << ENCR_MODE_SHIFT;
+- break;
+- case QCE_MODE_CCM:
+- cfg |= ENCR_MODE_CCM << ENCR_MODE_SHIFT;
+- cfg |= LAST_CCM_XFR << LAST_CCM_SHIFT;
+- break;
+- default:
+- return ~0;
++ n = len / sizeof(u32);
++ for (; n > 0; n--) {
++ *d = cpu_to_be32p((const __u32 *) s);
++ s += sizeof(__u32);
++ d++;
+ }
++}
+
+- return cfg;
++static void qce_setup_config(struct qce_device *qce)
++{
++ u32 config;
++
++ /* get big endianness */
++ config = qce_config_reg(qce, 0);
++
++ /* clear status */
++ qce_write(qce, REG_STATUS, 0);
++ qce_write(qce, REG_CONFIG, config);
++}
++
++static inline void qce_crypto_go(struct qce_device *qce)
++{
++ qce_write(qce, REG_GOPROC, BIT(GO_SHIFT) | BIT(RESULTS_DUMP_SHIFT));
+ }
+
++#ifdef CONFIG_CRYPTO_DEV_QCE_SHA
+ static u32 qce_auth_cfg(unsigned long flags, u32 key_size)
+ {
+ u32 cfg = 0;
+@@ -143,88 +147,6 @@ static u32 qce_auth_cfg(unsigned long fl
+ return cfg;
+ }
+
+-static u32 qce_config_reg(struct qce_device *qce, int little)
+-{
+- u32 beats = (qce->burst_size >> 3) - 1;
+- u32 pipe_pair = qce->pipe_pair_id;
+- u32 config;
+-
+- config = (beats << REQ_SIZE_SHIFT) & REQ_SIZE_MASK;
+- config |= BIT(MASK_DOUT_INTR_SHIFT) | BIT(MASK_DIN_INTR_SHIFT) |
+- BIT(MASK_OP_DONE_INTR_SHIFT) | BIT(MASK_ERR_INTR_SHIFT);
+- config |= (pipe_pair << PIPE_SET_SELECT_SHIFT) & PIPE_SET_SELECT_MASK;
+- config &= ~HIGH_SPD_EN_N_SHIFT;
+-
+- if (little)
+- config |= BIT(LITTLE_ENDIAN_MODE_SHIFT);
+-
+- return config;
+-}
+-
+-void qce_cpu_to_be32p_array(__be32 *dst, const u8 *src, unsigned int len)
+-{
+- __be32 *d = dst;
+- const u8 *s = src;
+- unsigned int n;
+-
+- n = len / sizeof(u32);
+- for (; n > 0; n--) {
+- *d = cpu_to_be32p((const __u32 *) s);
+- s += sizeof(__u32);
+- d++;
+- }
+-}
+-
+-static void qce_xts_swapiv(__be32 *dst, const u8 *src, unsigned int ivsize)
+-{
+- u8 swap[QCE_AES_IV_LENGTH];
+- u32 i, j;
+-
+- if (ivsize > QCE_AES_IV_LENGTH)
+- return;
+-
+- memset(swap, 0, QCE_AES_IV_LENGTH);
+-
+- for (i = (QCE_AES_IV_LENGTH - ivsize), j = ivsize - 1;
+- i < QCE_AES_IV_LENGTH; i++, j--)
+- swap[i] = src[j];
+-
+- qce_cpu_to_be32p_array(dst, swap, QCE_AES_IV_LENGTH);
+-}
+-
+-static void qce_xtskey(struct qce_device *qce, const u8 *enckey,
+- unsigned int enckeylen, unsigned int cryptlen)
+-{
+- u32 xtskey[QCE_MAX_CIPHER_KEY_SIZE / sizeof(u32)] = {0};
+- unsigned int xtsklen = enckeylen / (2 * sizeof(u32));
+- unsigned int xtsdusize;
+-
+- qce_cpu_to_be32p_array((__be32 *)xtskey, enckey + enckeylen / 2,
+- enckeylen / 2);
+- qce_write_array(qce, REG_ENCR_XTS_KEY0, xtskey, xtsklen);
+-
+- /* xts du size 512B */
+- xtsdusize = min_t(u32, QCE_SECTOR_SIZE, cryptlen);
+- qce_write(qce, REG_ENCR_XTS_DU_SIZE, xtsdusize);
+-}
+-
+-static void qce_setup_config(struct qce_device *qce)
+-{
+- u32 config;
+-
+- /* get big endianness */
+- config = qce_config_reg(qce, 0);
+-
+- /* clear status */
+- qce_write(qce, REG_STATUS, 0);
+- qce_write(qce, REG_CONFIG, config);
+-}
+-
+-static inline void qce_crypto_go(struct qce_device *qce)
+-{
+- qce_write(qce, REG_GOPROC, BIT(GO_SHIFT) | BIT(RESULTS_DUMP_SHIFT));
+-}
+-
+ static int qce_setup_regs_ahash(struct crypto_async_request *async_req,
+ u32 totallen, u32 offset)
+ {
+@@ -309,6 +231,87 @@ go_proc:
+
+ return 0;
+ }
++#endif
++
++#ifdef CONFIG_CRYPTO_DEV_QCE_SKCIPHER
++static u32 qce_encr_cfg(unsigned long flags, u32 aes_key_size)
++{
++ u32 cfg = 0;
++
++ if (IS_AES(flags)) {
++ if (aes_key_size == AES_KEYSIZE_128)
++ cfg |= ENCR_KEY_SZ_AES128 << ENCR_KEY_SZ_SHIFT;
++ else if (aes_key_size == AES_KEYSIZE_256)
++ cfg |= ENCR_KEY_SZ_AES256 << ENCR_KEY_SZ_SHIFT;
++ }
++
++ if (IS_AES(flags))
++ cfg |= ENCR_ALG_AES << ENCR_ALG_SHIFT;
++ else if (IS_DES(flags) || IS_3DES(flags))
++ cfg |= ENCR_ALG_DES << ENCR_ALG_SHIFT;
++
++ if (IS_DES(flags))
++ cfg |= ENCR_KEY_SZ_DES << ENCR_KEY_SZ_SHIFT;
++
++ if (IS_3DES(flags))
++ cfg |= ENCR_KEY_SZ_3DES << ENCR_KEY_SZ_SHIFT;
++
++ switch (flags & QCE_MODE_MASK) {
++ case QCE_MODE_ECB:
++ cfg |= ENCR_MODE_ECB << ENCR_MODE_SHIFT;
++ break;
++ case QCE_MODE_CBC:
++ cfg |= ENCR_MODE_CBC << ENCR_MODE_SHIFT;
++ break;
++ case QCE_MODE_CTR:
++ cfg |= ENCR_MODE_CTR << ENCR_MODE_SHIFT;
++ break;
++ case QCE_MODE_XTS:
++ cfg |= ENCR_MODE_XTS << ENCR_MODE_SHIFT;
++ break;
++ case QCE_MODE_CCM:
++ cfg |= ENCR_MODE_CCM << ENCR_MODE_SHIFT;
++ cfg |= LAST_CCM_XFR << LAST_CCM_SHIFT;
++ break;
++ default:
++ return ~0;
++ }
++
++ return cfg;
++}
++
++static void qce_xts_swapiv(__be32 *dst, const u8 *src, unsigned int ivsize)
++{
++ u8 swap[QCE_AES_IV_LENGTH];
++ u32 i, j;
++
++ if (ivsize > QCE_AES_IV_LENGTH)
++ return;
++
++ memset(swap, 0, QCE_AES_IV_LENGTH);
++
++ for (i = (QCE_AES_IV_LENGTH - ivsize), j = ivsize - 1;
++ i < QCE_AES_IV_LENGTH; i++, j--)
++ swap[i] = src[j];
++
++ qce_cpu_to_be32p_array(dst, swap, QCE_AES_IV_LENGTH);
++}
++
++static void qce_xtskey(struct qce_device *qce, const u8 *enckey,
++ unsigned int enckeylen, unsigned int cryptlen)
++{
++ u32 xtskey[QCE_MAX_CIPHER_KEY_SIZE / sizeof(u32)] = {0};
++ unsigned int xtsklen = enckeylen / (2 * sizeof(u32));
++ unsigned int xtsdusize;
++
++ qce_cpu_to_be32p_array((__be32 *)xtskey, enckey + enckeylen / 2,
++ enckeylen / 2);
++ qce_write_array(qce, REG_ENCR_XTS_KEY0, xtskey, xtsklen);
++
++ /* xts du size 512B */
++ xtsdusize = min_t(u32, QCE_SECTOR_SIZE, cryptlen);
++ qce_write(qce, REG_ENCR_XTS_DU_SIZE, xtsdusize);
++}
+
+ static int qce_setup_regs_skcipher(struct crypto_async_request *async_req,
+ u32 totallen, u32 offset)
+@@ -390,15 +393,20 @@ static int qce_setup_regs_skcipher(struc
+
+ return 0;
+ }
++#endif
+
+ int qce_start(struct crypto_async_request *async_req, u32 type, u32 totallen,
+ u32 offset)
+ {
+ switch (type) {
++#ifdef CONFIG_CRYPTO_DEV_QCE_SKCIPHER
+ case CRYPTO_ALG_TYPE_SKCIPHER:
+ return qce_setup_regs_skcipher(async_req, totallen, offset);
++#endif
++#ifdef CONFIG_CRYPTO_DEV_QCE_SHA
+ case CRYPTO_ALG_TYPE_AHASH:
+ return qce_setup_regs_ahash(async_req, totallen, offset);
++#endif
+ default:
+ return -EINVAL;
+ }
+--- a/drivers/crypto/qce/core.c
++++ b/drivers/crypto/qce/core.c
+@@ -30,8 +30,12 @@
+ #define QCE_QUEUE_LENGTH 1
+
+ static const struct qce_algo_ops *qce_ops[] = {
++#ifdef CONFIG_CRYPTO_DEV_QCE_SKCIPHER
+ &skcipher_ops,
++#endif
++#ifdef CONFIG_CRYPTO_DEV_QCE_SHA
+ &ahash_ops,
++#endif
+ };
+
+ static void qce_unregister_algs(struct qce_device *qce)
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