[PATCH 05/12] staging: ccree: remove cycle count debug support

From: Gilad Ben-Yossef
Date: Sun May 28 2017 - 10:41:21 EST

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The ccree driver had support for rough performance debugging
via cycle counting which has bit rotted and can easily be
replcaed with perf. Remove it from the driver.

Signed-off-by: Gilad Ben-Yossef <gilad@xxxxxxxxxxxxx>
---
drivers/staging/ccree/cc_hw_queue_defs.h | 13 ----
drivers/staging/ccree/ssi_aead.c | 33 ---------
drivers/staging/ccree/ssi_cipher.c | 20 ------
drivers/staging/ccree/ssi_config.h | 6 --
drivers/staging/ccree/ssi_driver.c | 8 ---
drivers/staging/ccree/ssi_driver.h | 25 -------
drivers/staging/ccree/ssi_hash.c | 28 --------
drivers/staging/ccree/ssi_request_mgr.c | 115 -------------------------------
8 files changed, 248 deletions(-)

diff --git a/drivers/staging/ccree/cc_hw_queue_defs.h b/drivers/staging/ccree/cc_hw_queue_defs.h
index af10850..14126e5 100644
--- a/drivers/staging/ccree/cc_hw_queue_defs.h
+++ b/drivers/staging/ccree/cc_hw_queue_defs.h
@@ -29,8 +29,6 @@
#define HW_DESC_SIZE_WORDS 6
#define HW_QUEUE_SLOTS_MAX 15 /* Max. available HW queue slots */

-#define _HW_DESC_MONITOR_KICK 0x7FFFC00
-
#define CC_REG_NAME(word, name) DX_DSCRPTR_QUEUE_WORD ## word ## _ ## name

#define CC_REG_LOW(word, name) \
@@ -606,15 +604,4 @@ static inline void set_cipher_do(struct cc_hw_desc *pdesc,
(config & HW_KEY_MASK_CIPHER_DO));
}

-/*
- * This macro sets the DIN field of a HW descriptors to star/stop monitor descriptor.
- * Used for performance measurements and debug purposes.
- *
- * @pdesc: pointer HW descriptor struct
- */
-#define HW_DESC_SET_DIN_MONITOR_CNTR(pDesc) \
- do { \
- CC_REG_FLD_SET(CRY_KERNEL, DSCRPTR_MEASURE_CNTR, VALUE, (pDesc)->word[1], _HW_DESC_MONITOR_KICK); \
- } while (0)
-
#endif /*__CC_HW_QUEUE_DEFS_H__*/
diff --git a/drivers/staging/ccree/ssi_aead.c b/drivers/staging/ccree/ssi_aead.c
index 2a7ec8b..32206eb 100644
--- a/drivers/staging/ccree/ssi_aead.c
+++ b/drivers/staging/ccree/ssi_aead.c
@@ -217,9 +217,6 @@ static void ssi_aead_complete(struct device *dev, void *ssi_req, void __iomem *c
struct crypto_aead *tfm = crypto_aead_reqtfm(ssi_req);
struct ssi_aead_ctx *ctx = crypto_aead_ctx(tfm);
int err = 0;
- DECL_CYCLE_COUNT_RESOURCES;
-
- START_CYCLE_COUNT();

ssi_buffer_mgr_unmap_aead_request(dev, areq);

@@ -253,7 +250,6 @@ static void ssi_aead_complete(struct device *dev, void *ssi_req, void __iomem *c
}
}

- END_CYCLE_COUNT(STAT_OP_TYPE_GENERIC, STAT_PHASE_4);
aead_request_complete(areq, err);
}

@@ -518,10 +514,6 @@ ssi_get_plain_hmac_key(struct crypto_aead *tfm, const u8 *key, unsigned int keyl
idx++;
}

-#ifdef ENABLE_CYCLE_COUNT
- ssi_req.op_type = STAT_OP_TYPE_SETKEY;
-#endif
-
rc = send_request(ctx->drvdata, &ssi_req, desc, idx, 0);
if (unlikely(rc != 0))
SSI_LOG_ERR("send_request() failed (rc=%d)\n", rc);
@@ -543,14 +535,12 @@ ssi_aead_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen)
struct crypto_authenc_key_param *param;
struct cc_hw_desc desc[MAX_AEAD_SETKEY_SEQ];
int seq_len = 0, rc = -EINVAL;
- DECL_CYCLE_COUNT_RESOURCES;

SSI_LOG_DEBUG("Setting key in context @%p for %s. key=%p keylen=%u\n",
ctx, crypto_tfm_alg_name(crypto_aead_tfm(tfm)), key, keylen);

CHECK_AND_RETURN_UPON_FIPS_ERROR();
/* STAT_PHASE_0: Init and sanity checks */
- START_CYCLE_COUNT();

if (ctx->auth_mode != DRV_HASH_NULL) { /* authenc() alg. */
if (!RTA_OK(rta, keylen))
@@ -588,9 +578,7 @@ ssi_aead_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen)
if (unlikely(rc != 0))
goto badkey;

- END_CYCLE_COUNT(STAT_OP_TYPE_SETKEY, STAT_PHASE_0);
/* STAT_PHASE_1: Copy key to ctx */
- START_CYCLE_COUNT();

/* Get key material */
memcpy(ctx->enckey, key + ctx->auth_keylen, ctx->enc_keylen);
@@ -604,10 +592,8 @@ ssi_aead_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen)
goto badkey;
}

- END_CYCLE_COUNT(STAT_OP_TYPE_SETKEY, STAT_PHASE_1);

/* STAT_PHASE_2: Create sequence */
- START_CYCLE_COUNT();

switch (ctx->auth_mode) {
case DRV_HASH_SHA1:
@@ -625,15 +611,10 @@ ssi_aead_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen)
goto badkey;
}

- END_CYCLE_COUNT(STAT_OP_TYPE_SETKEY, STAT_PHASE_2);

/* STAT_PHASE_3: Submit sequence to HW */
- START_CYCLE_COUNT();

if (seq_len > 0) { /* For CCM there is no sequence to setup the key */
-#ifdef ENABLE_CYCLE_COUNT
- ssi_req.op_type = STAT_OP_TYPE_SETKEY;
-#endif
rc = send_request(ctx->drvdata, &ssi_req, desc, seq_len, 0);
if (unlikely(rc != 0)) {
SSI_LOG_ERR("send_request() failed (rc=%d)\n", rc);
@@ -642,7 +623,6 @@ ssi_aead_setkey(struct crypto_aead *tfm, const u8 *key, unsigned int keylen)
}

/* Update STAT_PHASE_3 */
- END_CYCLE_COUNT(STAT_OP_TYPE_SETKEY, STAT_PHASE_3);
return rc;

badkey:
@@ -1966,7 +1946,6 @@ static int ssi_aead_process(struct aead_request *req, enum drv_crypto_direction
struct device *dev = &ctx->drvdata->plat_dev->dev;
struct ssi_crypto_req ssi_req = {};

- DECL_CYCLE_COUNT_RESOURCES;

SSI_LOG_DEBUG("%s context=%p req=%p iv=%p src=%p src_ofs=%d dst=%p dst_ofs=%d cryptolen=%d\n",
((direct==DRV_CRYPTO_DIRECTION_ENCRYPT)?"Encrypt":"Decrypt"), ctx, req, req->iv,
@@ -1974,7 +1953,6 @@ static int ssi_aead_process(struct aead_request *req, enum drv_crypto_direction
CHECK_AND_RETURN_UPON_FIPS_ERROR();

/* STAT_PHASE_0: Init and sanity checks */
- START_CYCLE_COUNT();

/* Check data length according to mode */
if (unlikely(validate_data_size(ctx, direct, req) != 0)) {
@@ -1988,19 +1966,13 @@ static int ssi_aead_process(struct aead_request *req, enum drv_crypto_direction
ssi_req.user_cb = (void *)ssi_aead_complete;
ssi_req.user_arg = (void *)req;

-#ifdef ENABLE_CYCLE_COUNT
- ssi_req.op_type = (direct == DRV_CRYPTO_DIRECTION_DECRYPT) ?
- STAT_OP_TYPE_DECODE : STAT_OP_TYPE_ENCODE;
-#endif
/* Setup request context */
areq_ctx->gen_ctx.op_type = direct;
areq_ctx->req_authsize = ctx->authsize;
areq_ctx->cipher_mode = ctx->cipher_mode;

- END_CYCLE_COUNT(ssi_req.op_type, STAT_PHASE_0);

/* STAT_PHASE_1: Map buffers */
- START_CYCLE_COUNT();

if (ctx->cipher_mode == DRV_CIPHER_CTR) {
/* Build CTR IV - Copy nonce from last 4 bytes in
@@ -2082,10 +2054,8 @@ static int ssi_aead_process(struct aead_request *req, enum drv_crypto_direction
ssi_req.ivgen_size = crypto_aead_ivsize(tfm);
}

- END_CYCLE_COUNT(ssi_req.op_type, STAT_PHASE_1);

/* STAT_PHASE_2: Create sequence */
- START_CYCLE_COUNT();

/* Load MLLI tables to SRAM if necessary */
ssi_aead_load_mlli_to_sram(req, desc, &seq_len);
@@ -2120,10 +2090,8 @@ static int ssi_aead_process(struct aead_request *req, enum drv_crypto_direction
goto exit;
}

- END_CYCLE_COUNT(ssi_req.op_type, STAT_PHASE_2);

/* STAT_PHASE_3: Lock HW and push sequence */
- START_CYCLE_COUNT();

rc = send_request(ctx->drvdata, &ssi_req, desc, seq_len, 1);

@@ -2133,7 +2101,6 @@ static int ssi_aead_process(struct aead_request *req, enum drv_crypto_direction
}

- END_CYCLE_COUNT(ssi_req.op_type, STAT_PHASE_3);
exit:
return rc;
}
diff --git a/drivers/staging/ccree/ssi_cipher.c b/drivers/staging/ccree/ssi_cipher.c
index 56e441c..e16fd36 100644
--- a/drivers/staging/ccree/ssi_cipher.c
+++ b/drivers/staging/ccree/ssi_cipher.c
@@ -323,7 +323,6 @@ static int ssi_blkcipher_setkey(struct crypto_tfm *tfm,
struct device *dev = &ctx_p->drvdata->plat_dev->dev;
u32 tmp[DES_EXPKEY_WORDS];
unsigned int max_key_buf_size = get_max_keysize(tfm);
- DECL_CYCLE_COUNT_RESOURCES;

SSI_LOG_DEBUG("Setting key in context @%p for %s. keylen=%u\n",
ctx_p, crypto_tfm_alg_name(tfm), keylen);
@@ -334,7 +333,6 @@ static int ssi_blkcipher_setkey(struct crypto_tfm *tfm,
SSI_LOG_DEBUG("ssi_blkcipher_setkey: after FIPS check");

/* STAT_PHASE_0: Init and sanity checks */
- START_CYCLE_COUNT();

#if SSI_CC_HAS_MULTI2
/*last byte of key buffer is round number and should not be a part of key size*/
@@ -379,7 +377,6 @@ static int ssi_blkcipher_setkey(struct crypto_tfm *tfm,
}

ctx_p->keylen = keylen;
- END_CYCLE_COUNT(STAT_OP_TYPE_SETKEY, STAT_PHASE_0);
SSI_LOG_DEBUG("ssi_blkcipher_setkey: ssi_is_hw_key ret 0");

return 0;
@@ -407,10 +404,8 @@ static int ssi_blkcipher_setkey(struct crypto_tfm *tfm,
}

- END_CYCLE_COUNT(STAT_OP_TYPE_SETKEY, STAT_PHASE_0);

/* STAT_PHASE_1: Copy key to ctx */
- START_CYCLE_COUNT();
dma_sync_single_for_cpu(dev, ctx_p->user.key_dma_addr,
max_key_buf_size, DMA_TO_DEVICE);
#if SSI_CC_HAS_MULTI2
@@ -448,7 +443,6 @@ static int ssi_blkcipher_setkey(struct crypto_tfm *tfm,
max_key_buf_size, DMA_TO_DEVICE);
ctx_p->keylen = keylen;

- END_CYCLE_COUNT(STAT_OP_TYPE_SETKEY, STAT_PHASE_1);

SSI_LOG_DEBUG("ssi_blkcipher_setkey: return safely");
return 0;
@@ -736,11 +730,8 @@ static int ssi_blkcipher_complete(struct device *dev,
{
int completion_error = 0;
u32 inflight_counter;
- DECL_CYCLE_COUNT_RESOURCES;

- START_CYCLE_COUNT();
ssi_buffer_mgr_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst);
- END_CYCLE_COUNT(STAT_OP_TYPE_GENERIC, STAT_PHASE_4);

/*Set the inflight couter value to local variable*/
@@ -771,7 +762,6 @@ static int ssi_blkcipher_process(
struct cc_hw_desc desc[MAX_ABLKCIPHER_SEQ_LEN];
struct ssi_crypto_req ssi_req = {};
int rc, seq_len = 0,cts_restore_flag = 0;
- DECL_CYCLE_COUNT_RESOURCES;

SSI_LOG_DEBUG("%s areq=%p info=%p nbytes=%d\n",
((direction==DRV_CRYPTO_DIRECTION_ENCRYPT)?"Encrypt":"Decrypt"),
@@ -779,7 +769,6 @@ static int ssi_blkcipher_process(

CHECK_AND_RETURN_UPON_FIPS_ERROR();
/* STAT_PHASE_0: Init and sanity checks */
- START_CYCLE_COUNT();

/* TODO: check data length according to mode */
if (unlikely(validate_data_size(ctx_p, nbytes))) {
@@ -811,10 +800,8 @@ static int ssi_blkcipher_process(
/* Setup request context */
req_ctx->gen_ctx.op_type = direction;

- END_CYCLE_COUNT(ssi_req.op_type, STAT_PHASE_0);

/* STAT_PHASE_1: Map buffers */
- START_CYCLE_COUNT();

rc = ssi_buffer_mgr_map_blkcipher_request(ctx_p->drvdata, req_ctx, ivsize, nbytes, info, src, dst);
if (unlikely(rc != 0)) {
@@ -822,10 +809,8 @@ static int ssi_blkcipher_process(
goto exit_process;
}

- END_CYCLE_COUNT(ssi_req.op_type, STAT_PHASE_1);

/* STAT_PHASE_2: Create sequence */
- START_CYCLE_COUNT();

/* Setup processing */
#if SSI_CC_HAS_MULTI2
@@ -860,10 +845,8 @@ static int ssi_blkcipher_process(
/* set the IV size (8/16 B long)*/
ssi_req.ivgen_size = ivsize;
}
- END_CYCLE_COUNT(ssi_req.op_type, STAT_PHASE_2);

/* STAT_PHASE_3: Lock HW and push sequence */
- START_CYCLE_COUNT();

rc = send_request(ctx_p->drvdata, &ssi_req, desc, seq_len, (areq == NULL)? 0:1);
if(areq != NULL) {
@@ -872,13 +855,10 @@ static int ssi_blkcipher_process(
ssi_buffer_mgr_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst);
}

- END_CYCLE_COUNT(ssi_req.op_type, STAT_PHASE_3);
} else {
if (rc != 0) {
ssi_buffer_mgr_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst);
- END_CYCLE_COUNT(ssi_req.op_type, STAT_PHASE_3);
} else {
- END_CYCLE_COUNT(ssi_req.op_type, STAT_PHASE_3);
rc = ssi_blkcipher_complete(dev, ctx_p, req_ctx, dst,
src, ivsize, NULL,
ctx_p->drvdata->cc_base);
diff --git a/drivers/staging/ccree/ssi_config.h b/drivers/staging/ccree/ssi_config.h
index 431b518..5611e8e 100644
--- a/drivers/staging/ccree/ssi_config.h
+++ b/drivers/staging/ccree/ssi_config.h
@@ -30,15 +30,9 @@
// #define DX_DUMP_BYTES
// #define CC_DEBUG
#define ENABLE_CC_SYSFS /* Enable sysfs interface for debugging REE driver */
-//#define ENABLE_CC_CYCLE_COUNT
//#define DX_IRQ_DELAY 100000
#define DMA_BIT_MASK_LEN 48 /* was 32 bit, but for juno's sake it was enlarged to 48 bit */

-#if defined ENABLE_CC_CYCLE_COUNT && defined ENABLE_CC_SYSFS
-#define CC_CYCLE_COUNT
-#endif
-
-
#if defined (CONFIG_ARM64) // TODO currently only this mode was test on Juno (which is ARM64), need to enable coherent also.
#define DISABLE_COHERENT_DMA_OPS
#endif
diff --git a/drivers/staging/ccree/ssi_driver.c b/drivers/staging/ccree/ssi_driver.c
index 52c6984..1909229 100644
--- a/drivers/staging/ccree/ssi_driver.c
+++ b/drivers/staging/ccree/ssi_driver.c
@@ -118,10 +118,8 @@ static irqreturn_t cc_isr(int irq, void *dev_id)
void __iomem *cc_base = drvdata->cc_base;
u32 irr;
u32 imr;
- DECL_CYCLE_COUNT_RESOURCES;

/* STAT_OP_TYPE_GENERIC STAT_PHASE_0: Interrupt */
- START_CYCLE_COUNT();

/* read the interrupt status */
irr = CC_HAL_READ_REGISTER(CC_REG_OFFSET(HOST_RGF, HOST_IRR));
@@ -168,9 +166,6 @@ static irqreturn_t cc_isr(int irq, void *dev_id)
/* Just warning */
}

- END_CYCLE_COUNT(STAT_OP_TYPE_GENERIC, STAT_PHASE_0);
- START_CYCLE_COUNT_AT(drvdata->isr_exit_cycles);
-
return IRQ_HANDLED;
}

@@ -509,9 +504,6 @@ static int cc7x_remove(struct platform_device *plat_dev)
cleanup_cc_resources(plat_dev);

SSI_LOG(KERN_INFO, "ARM cc7x_ree device terminated\n");
-#ifdef ENABLE_CYCLE_COUNT
- display_all_stat_db();
-#endif

return 0;
}
diff --git a/drivers/staging/ccree/ssi_driver.h b/drivers/staging/ccree/ssi_driver.h
index 38c7709..f3df70b 100644
--- a/drivers/staging/ccree/ssi_driver.h
+++ b/drivers/staging/ccree/ssi_driver.h
@@ -114,11 +114,6 @@ struct ssi_crypto_req {
unsigned int ivgen_dma_addr_len; /* Amount of 'ivgen_dma_addr' elements to be filled. */
unsigned int ivgen_size; /* The generated IV size required, 8/16 B allowed. */
struct completion seq_compl; /* request completion */
-#ifdef ENABLE_CYCLE_COUNT
- enum stat_op op_type;
- cycles_t submit_cycle;
- bool is_monitored_p;
-#endif
};

/**
@@ -149,10 +144,6 @@ struct ssi_drvdata {
void *fips_handle;
void *ivgen_handle;
void *sram_mgr_handle;
-
-#ifdef ENABLE_CYCLE_COUNT
- cycles_t isr_exit_cycles; /* Save for isr-to-tasklet latency */
-#endif
u32 inflight_counter;

};
@@ -198,22 +189,6 @@ void dump_byte_array(const char *name, const u8 *the_array, unsigned long size);
} while (0);
#endif

-#ifdef ENABLE_CYCLE_COUNT
-#define DECL_CYCLE_COUNT_RESOURCES cycles_t _last_cycles_read
-#define START_CYCLE_COUNT() do { _last_cycles_read = get_cycles(); } while (0)
-#define END_CYCLE_COUNT(_stat_op_type, _stat_phase) update_host_stat(_stat_op_type, _stat_phase, get_cycles() - _last_cycles_read)
-#define GET_START_CYCLE_COUNT() _last_cycles_read
-#define START_CYCLE_COUNT_AT(_var) do { _var = get_cycles(); } while(0)
-#define END_CYCLE_COUNT_AT(_var, _stat_op_type, _stat_phase) update_host_stat(_stat_op_type, _stat_phase, get_cycles() - _var)
-#else
-#define DECL_CYCLE_COUNT_RESOURCES
-#define START_CYCLE_COUNT() do { } while (0)
-#define END_CYCLE_COUNT(_stat_op_type, _stat_phase) do { } while (0)
-#define GET_START_CYCLE_COUNT() 0
-#define START_CYCLE_COUNT_AT(_var) do { } while (0)
-#define END_CYCLE_COUNT_AT(_var, _stat_op_type, _stat_phase) do { } while (0)
-#endif /*ENABLE_CYCLE_COUNT*/
-
int init_cc_regs(struct ssi_drvdata *drvdata, bool is_probe);
void fini_cc_regs(struct ssi_drvdata *drvdata);

diff --git a/drivers/staging/ccree/ssi_hash.c b/drivers/staging/ccree/ssi_hash.c
index 4a22f91..1515635 100644
--- a/drivers/staging/ccree/ssi_hash.c
+++ b/drivers/staging/ccree/ssi_hash.c
@@ -458,9 +458,6 @@ static int ssi_hash_digest(struct ahash_req_ctx *state,
/* Setup DX request structure */
ssi_req.user_cb = (void *)ssi_hash_digest_complete;
ssi_req.user_arg = (void *)async_req;
-#ifdef ENABLE_CYCLE_COUNT
- ssi_req.op_type = STAT_OP_TYPE_ENCODE; /* Use "Encode" stats */
-#endif
}

/* If HMAC then load hash IPAD xor key, if HASH then load initial digest */
@@ -628,9 +625,6 @@ static int ssi_hash_update(struct ahash_req_ctx *state,
/* Setup DX request structure */
ssi_req.user_cb = (void *)ssi_hash_update_complete;
ssi_req.user_arg = async_req;
-#ifdef ENABLE_CYCLE_COUNT
- ssi_req.op_type = STAT_OP_TYPE_ENCODE; /* Use "Encode" stats */
-#endif
}

/* Restore hash digest */
@@ -723,9 +717,6 @@ static int ssi_hash_finup(struct ahash_req_ctx *state,
/* Setup DX request structure */
ssi_req.user_cb = (void *)ssi_hash_complete;
ssi_req.user_arg = async_req;
-#ifdef ENABLE_CYCLE_COUNT
- ssi_req.op_type = STAT_OP_TYPE_ENCODE; /* Use "Encode" stats */
-#endif
}

/* Restore hash digest */
@@ -864,9 +855,6 @@ static int ssi_hash_final(struct ahash_req_ctx *state,
/* Setup DX request structure */
ssi_req.user_cb = (void *)ssi_hash_complete;
ssi_req.user_arg = async_req;
-#ifdef ENABLE_CYCLE_COUNT
- ssi_req.op_type = STAT_OP_TYPE_ENCODE; /* Use "Encode" stats */
-#endif
}

/* Restore hash digest */
@@ -1305,7 +1293,6 @@ static int ssi_cmac_setkey(struct crypto_ahash *ahash,
const u8 *key, unsigned int keylen)
{
struct ssi_hash_ctx *ctx = crypto_ahash_ctx(ahash);
- DECL_CYCLE_COUNT_RESOURCES;
SSI_LOG_DEBUG("===== setkey (%d) ====\n", keylen);
CHECK_AND_RETURN_UPON_FIPS_ERROR();

@@ -1323,7 +1310,6 @@ static int ssi_cmac_setkey(struct crypto_ahash *ahash,
ctx->key_params.keylen = keylen;

/* STAT_PHASE_1: Copy key to ctx */
- START_CYCLE_COUNT();

dma_sync_single_for_cpu(&ctx->drvdata->plat_dev->dev,
ctx->opad_tmp_keys_dma_addr,
@@ -1339,7 +1325,6 @@ static int ssi_cmac_setkey(struct crypto_ahash *ahash,

ctx->key_params.keylen = keylen;

- END_CYCLE_COUNT(STAT_OP_TYPE_SETKEY, STAT_PHASE_1);

return 0;
}
@@ -1507,9 +1492,6 @@ static int ssi_mac_update(struct ahash_request *req)
/* Setup DX request structure */
ssi_req.user_cb = (void *)ssi_hash_update_complete;
ssi_req.user_arg = (void *)req;
-#ifdef ENABLE_CYCLE_COUNT
- ssi_req.op_type = STAT_OP_TYPE_ENCODE; /* Use "Encode" stats */
-#endif

rc = send_request(ctx->drvdata, &ssi_req, desc, idx, 1);
if (unlikely(rc != -EINPROGRESS)) {
@@ -1560,9 +1542,6 @@ static int ssi_mac_final(struct ahash_request *req)
/* Setup DX request structure */
ssi_req.user_cb = (void *)ssi_hash_complete;
ssi_req.user_arg = (void *)req;
-#ifdef ENABLE_CYCLE_COUNT
- ssi_req.op_type = STAT_OP_TYPE_ENCODE; /* Use "Encode" stats */
-#endif

if (state->xcbc_count && (rem_cnt == 0)) {
/* Load key for ECB decryption */
@@ -1668,9 +1647,6 @@ static int ssi_mac_finup(struct ahash_request *req)
/* Setup DX request structure */
ssi_req.user_cb = (void *)ssi_hash_complete;
ssi_req.user_arg = (void *)req;
-#ifdef ENABLE_CYCLE_COUNT
- ssi_req.op_type = STAT_OP_TYPE_ENCODE; /* Use "Encode" stats */
-#endif

if (ctx->hw_mode == DRV_CIPHER_XCBC_MAC) {
key_len = CC_AES_128_BIT_KEY_SIZE;
@@ -1744,10 +1720,6 @@ static int ssi_mac_digest(struct ahash_request *req)
/* Setup DX request structure */
ssi_req.user_cb = (void *)ssi_hash_digest_complete;
ssi_req.user_arg = (void *)req;
-#ifdef ENABLE_CYCLE_COUNT
- ssi_req.op_type = STAT_OP_TYPE_ENCODE; /* Use "Encode" stats */
-#endif
-

if (ctx->hw_mode == DRV_CIPHER_XCBC_MAC) {
keyLen = CC_AES_128_BIT_KEY_SIZE;
diff --git a/drivers/staging/ccree/ssi_request_mgr.c b/drivers/staging/ccree/ssi_request_mgr.c
index 6fc7b06..683140a 100644
--- a/drivers/staging/ccree/ssi_request_mgr.c
+++ b/drivers/staging/ccree/ssi_request_mgr.c
@@ -37,74 +37,6 @@

#define AXIM_MON_BASE_OFFSET CC_REG_OFFSET(CRY_KERNEL, AXIM_MON_COMP)

-#ifdef CC_CYCLE_COUNT
-
-#define MONITOR_CNTR_BIT 0
-
-/**
- * Monitor descriptor.
- * Used to measure CC performance.
- */
-#define INIT_CC_MONITOR_DESC(desc_p) \
-do { \
- hw_desc_init(desc_p); \
- set_din_monitor_cntr(desc_p); \
-} while (0)
-
-/**
- * Try adding monitor descriptor BEFORE enqueuing sequence.
- */
-#define CC_CYCLE_DESC_HEAD(cc_base_addr, desc_p, lock_p, is_monitored_p) \
-do { \
- if (!test_and_set_bit(MONITOR_CNTR_BIT, (lock_p))) { \
- enqueue_seq((cc_base_addr), (desc_p), 1); \
- *(is_monitored_p) = true; \
- } else { \
- *(is_monitored_p) = false; \
- } \
-} while (0)
-
-/**
- * If CC_CYCLE_DESC_HEAD was successfully added:
- * 1. Add memory barrier descriptor to ensure last AXI transaction.
- * 2. Add monitor descriptor to sequence tail AFTER enqueuing sequence.
- */
-#define CC_CYCLE_DESC_TAIL(cc_base_addr, desc_p, is_monitored) \
-do { \
- if ((is_monitored) == true) { \
- struct cc_hw_desc barrier_desc; \
- hw_desc_init(&barrier_desc); \
- set_din_no_dma(&barrier_desc, 0, 0xfffff0); \
- set_dout_no_dma(&barrier_desc, 0, 0, 1); \
- enqueue_seq((cc_base_addr), &barrier_desc, 1); \
- enqueue_seq((cc_base_addr), (desc_p), 1); \
- } \
-} while (0)
-
-/**
- * Try reading CC monitor counter value upon sequence complete.
- * Can only succeed if the lock_p is taken by the owner of the given request.
- */
-#define END_CC_MONITOR_COUNT(cc_base_addr, stat_op_type, stat_phase, monitor_null_cycles, lock_p, is_monitored) \
-do { \
- u32 elapsed_cycles; \
- if ((is_monitored) == true) { \
- elapsed_cycles = READ_REGISTER((cc_base_addr) + CC_REG_OFFSET(CRY_KERNEL, DSCRPTR_MEASURE_CNTR)); \
- clear_bit(MONITOR_CNTR_BIT, (lock_p)); \
- if (elapsed_cycles > 0) \
- update_cc_stat(stat_op_type, stat_phase, (elapsed_cycles - monitor_null_cycles)); \
- } \
-} while (0)
-
-#else /*CC_CYCLE_COUNT*/
-
-#define INIT_CC_MONITOR_DESC(desc_p) do { } while (0)
-#define CC_CYCLE_DESC_HEAD(cc_base_addr, desc_p, lock_p, is_monitored_p) do { } while (0)
-#define CC_CYCLE_DESC_TAIL(cc_base_addr, desc_p, is_monitored) do { } while (0)
-#define END_CC_MONITOR_COUNT(cc_base_addr, stat_op_type, stat_phase, monitor_null_cycles, lock_p, is_monitored) do { } while (0)
-#endif /*CC_CYCLE_COUNT*/
-
-
struct ssi_request_mgr_handle {
/* Request manager resources */
unsigned int hw_queue_size; /* HW capability */
@@ -168,10 +100,6 @@ void request_mgr_fini(struct ssi_drvdata *drvdata)

int request_mgr_init(struct ssi_drvdata *drvdata)
{
-#ifdef CC_CYCLE_COUNT
- struct cc_hw_desc monitor_desc[2];
- struct ssi_crypto_req monitor_req = {0};
-#endif
struct ssi_request_mgr_handle *req_mgr_h;
int rc = 0;

@@ -228,24 +156,6 @@ int request_mgr_init(struct ssi_drvdata *drvdata)
set_flow_mode(&req_mgr_h->compl_desc, BYPASS);
set_queue_last_ind(&req_mgr_h->compl_desc);

-#ifdef CC_CYCLE_COUNT
- /* For CC-HW cycle performance trace */
- INIT_CC_MONITOR_DESC(&req_mgr_h->monitor_desc);
- set_bit(MONITOR_CNTR_BIT, &req_mgr_h->monitor_lock);
- monitor_desc[0] = req_mgr_h->monitor_desc;
- monitor_desc[1] = req_mgr_h->monitor_desc;
-
- rc = send_request(drvdata, &monitor_req, monitor_desc, 2, 0);
- if (unlikely(rc != 0))
- goto req_mgr_init_err;
-
- drvdata->monitor_null_cycles = READ_REGISTER(drvdata->cc_base +
- CC_REG_OFFSET(CRY_KERNEL, DSCRPTR_MEASURE_CNTR));
- SSI_LOG_ERR("Calibration time=0x%08x\n", drvdata->monitor_null_cycles);
-
- clear_bit(MONITOR_CNTR_BIT, &req_mgr_h->monitor_lock);
-#endif
-
return 0;

req_mgr_init_err:
@@ -366,7 +276,6 @@ int send_request(
((ssi_req->ivgen_dma_addr_len == 0) ? 0 :
SSI_IVPOOL_SEQ_LEN ) +
((is_dout == 0 )? 1 : 0));
- DECL_CYCLE_COUNT_RESOURCES;

#if defined (CONFIG_PM_RUNTIME) || defined (CONFIG_PM_SLEEP)
rc = ssi_power_mgr_runtime_get(&drvdata->plat_dev->dev);
@@ -442,12 +351,8 @@ int send_request(
req_mgr_h->max_used_sw_slots = used_sw_slots;
}

- CC_CYCLE_DESC_HEAD(cc_base, &req_mgr_h->monitor_desc,
- &req_mgr_h->monitor_lock, &ssi_req->is_monitored_p);
-
/* Enqueue request - must be locked with HW lock*/
req_mgr_h->req_queue[req_mgr_h->req_queue_head] = *ssi_req;
- START_CYCLE_COUNT_AT(req_mgr_h->req_queue[req_mgr_h->req_queue_head].submit_cycle);
req_mgr_h->req_queue_head = (req_mgr_h->req_queue_head + 1) & (MAX_REQUEST_QUEUE_SIZE - 1);
/* TODO: Use circ_buf.h ? */

@@ -458,13 +363,9 @@ int send_request(
#endif

/* STAT_PHASE_4: Push sequence */
- START_CYCLE_COUNT();
enqueue_seq(cc_base, iv_seq, iv_seq_len);
enqueue_seq(cc_base, desc, len);
enqueue_seq(cc_base, &req_mgr_h->compl_desc, (is_dout ? 0 : 1));
- END_CYCLE_COUNT(ssi_req->op_type, STAT_PHASE_4);
-
- CC_CYCLE_DESC_TAIL(cc_base, &req_mgr_h->monitor_desc, ssi_req->is_monitored_p);

if (unlikely(req_mgr_h->q_free_slots < total_seq_len)) {
/*This means that there was a problem with the resume*/
@@ -553,7 +454,6 @@ static void proc_completions(struct ssi_drvdata *drvdata)
#if defined (CONFIG_PM_RUNTIME) || defined (CONFIG_PM_SLEEP)
int rc = 0;
#endif
- DECL_CYCLE_COUNT_RESOURCES;

while(request_mgr_handle->axi_completed) {
request_mgr_handle->axi_completed--;
@@ -565,9 +465,6 @@ static void proc_completions(struct ssi_drvdata *drvdata)
}

ssi_req = &request_mgr_handle->req_queue[request_mgr_handle->req_queue_tail];
- END_CYCLE_COUNT_AT(ssi_req->submit_cycle, ssi_req->op_type, STAT_PHASE_5); /* Seq. Comp. */
- END_CC_MONITOR_COUNT(drvdata->cc_base, ssi_req->op_type, STAT_PHASE_6,
- drvdata->monitor_null_cycles, &request_mgr_handle->monitor_lock, ssi_req->is_monitored_p);

#ifdef FLUSH_CACHE_ALL
flush_cache_all();
@@ -586,9 +483,7 @@ static void proc_completions(struct ssi_drvdata *drvdata)
#endif /* COMPLETION_DELAY */

if (likely(ssi_req->user_cb != NULL)) {
- START_CYCLE_COUNT();
ssi_req->user_cb(&plat_dev->dev, ssi_req->user_arg, drvdata->cc_base);
- END_CYCLE_COUNT(STAT_OP_TYPE_GENERIC, STAT_PHASE_3);
}
request_mgr_handle->req_queue_tail = (request_mgr_handle->req_queue_tail + 1) & (MAX_REQUEST_QUEUE_SIZE - 1);
SSI_LOG_DEBUG("Dequeue request tail=%u\n", request_mgr_handle->req_queue_tail);
@@ -612,9 +507,7 @@ static void comp_handler(unsigned long devarg)

u32 irq;

- DECL_CYCLE_COUNT_RESOURCES;

- START_CYCLE_COUNT();

irq = (drvdata->irq & SSI_COMP_IRQ_MASK);

@@ -626,13 +519,6 @@ static void comp_handler(unsigned long devarg)
request_mgr_handle->axi_completed += CC_REG_FLD_GET(CRY_KERNEL, AXIM_MON_COMP, VALUE,
CC_HAL_READ_REGISTER(AXIM_MON_BASE_OFFSET));

- /* ISR-to-Tasklet latency */
- if (request_mgr_handle->axi_completed) {
- /* Only if actually reflects ISR-to-completion-handling latency, i.e.,
- not duplicate as a result of interrupt after AXIM_MON_ERR clear, before end of loop */
- END_CYCLE_COUNT_AT(drvdata->isr_exit_cycles, STAT_OP_TYPE_GENERIC, STAT_PHASE_1);
- }
-
while (request_mgr_handle->axi_completed) {
do {
proc_completions(drvdata);
@@ -655,7 +541,6 @@ static void comp_handler(unsigned long devarg)
CC_HAL_WRITE_REGISTER(CC_REG_OFFSET(HOST_RGF, HOST_IMR),
CC_HAL_READ_REGISTER(
CC_REG_OFFSET(HOST_RGF, HOST_IMR)) & ~irq);
- END_CYCLE_COUNT(STAT_OP_TYPE_GENERIC, STAT_PHASE_2);
}

/*
--
2.1.4

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