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Merge branch 'bugfix/aes_dma_descriptor_setup_issue_v5.0' into 'release/v5.0'

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fix(aes): correct the linking of the DMA descriptors (v5.0)

See merge request espressif/esp-idf!25785
This commit is contained in:
Aditya Patwardhan 2023-09-20 13:52:03 +08:00
commit d2109f0527
1 changed files with 13 additions and 11 deletions
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24
components/mbedtls/port/aes/dma/esp_aes.c
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@ -395,6 +395,10 @@ static int esp_aes_process_dma(esp_aes_context *ctx, const unsigned char *input,
//Limit max inlink descriptor length to be 16 byte aligned, require for EDMA
lldesc_setup_link_constrained(block_out_desc, output, block_bytes, LLDESC_MAX_NUM_PER_DESC_16B_ALIGNED, 0);
/* Setup in/out start descriptors */
lldesc_append(&in_desc_head, block_in_desc);
lldesc_append(&out_desc_head, block_out_desc);
out_desc_tail = &block_out_desc[lldesc_num - 1];
}
@ -412,20 +416,13 @@ static int esp_aes_process_dma(esp_aes_context *ctx, const unsigned char *input,
lldesc_setup_link(&s_stream_in_desc, s_stream_in, AES_BLOCK_BYTES, 0);
lldesc_setup_link(&s_stream_out_desc, s_stream_out, AES_BLOCK_BYTES, 0);
if (block_bytes > 0) {
/* Link with block descriptors*/
block_in_desc[lldesc_num - 1].empty = (uint32_t)&s_stream_in_desc;
block_out_desc[lldesc_num - 1].empty = (uint32_t)&s_stream_out_desc;
}
/* Link with block descriptors */
lldesc_append(&in_desc_head, &s_stream_in_desc);
lldesc_append(&out_desc_head, &s_stream_out_desc);
out_desc_tail = &s_stream_out_desc;
}
// block buffers are sent to DMA first, unless there aren't any
in_desc_head = (block_bytes > 0) ? block_in_desc : &s_stream_in_desc;
out_desc_head = (block_bytes > 0) ? block_out_desc : &s_stream_out_desc;
#if defined (CONFIG_MBEDTLS_AES_USE_INTERRUPT)
/* Only use interrupt for long AES operations */
if (len > AES_DMA_INTR_TRIG_LEN) {
@ -485,6 +482,7 @@ cleanup:
int esp_aes_process_dma_gcm(esp_aes_context *ctx, const unsigned char *input, unsigned char *output, size_t len, lldesc_t *aad_desc, size_t aad_len)
{
lldesc_t *in_desc_head = NULL, *out_desc_head = NULL, *len_desc = NULL;
lldesc_t *out_desc_tail = NULL; /* pointer to the final output descriptor */
lldesc_t stream_in_desc, stream_out_desc;
lldesc_t *block_desc = NULL, *block_in_desc = NULL, *block_out_desc = NULL;
size_t lldesc_num;
@ -534,6 +532,8 @@ int esp_aes_process_dma_gcm(esp_aes_context *ctx, const unsigned char *input, un
lldesc_append(&in_desc_head, block_in_desc);
lldesc_append(&out_desc_head, block_out_desc);
out_desc_tail = &block_out_desc[lldesc_num - 1];
}
/* Any leftover bytes which are appended as an additional DMA list */
@ -545,6 +545,8 @@ int esp_aes_process_dma_gcm(esp_aes_context *ctx, const unsigned char *input, un
lldesc_append(&in_desc_head, &stream_in_desc);
lldesc_append(&out_desc_head, &stream_out_desc);
out_desc_tail = &stream_out_desc;
}
@ -583,7 +585,7 @@ int esp_aes_process_dma_gcm(esp_aes_context *ctx, const unsigned char *input, un
aes_hal_transform_dma_gcm_start(blocks);
esp_aes_dma_wait_complete(use_intr, out_desc_head);
esp_aes_dma_wait_complete(use_intr, out_desc_tail);
aes_hal_transform_dma_finish();