1800 lines
53 KiB
C
1800 lines
53 KiB
C
/*
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* Copyright (C) 2012-2017 ARM Limited or its affiliates.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/crypto.h>
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#include <linux/version.h>
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#include <crypto/algapi.h>
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#include <crypto/internal/aead.h>
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#include <crypto/hash.h>
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#include <crypto/authenc.h>
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#include <crypto/scatterwalk.h>
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#include <linux/dmapool.h>
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#include <linux/dma-mapping.h>
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#include <linux/crypto.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include "ssi_buffer_mgr.h"
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#include "cc_lli_defs.h"
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#include "ssi_cipher.h"
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#include "ssi_hash.h"
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#include "ssi_aead.h"
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#ifdef CC_DEBUG
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#define GET_DMA_BUFFER_TYPE(buff_type) ( \
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((buff_type) == SSI_DMA_BUF_NULL) ? "BUF_NULL" : \
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((buff_type) == SSI_DMA_BUF_DLLI) ? "BUF_DLLI" : \
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((buff_type) == SSI_DMA_BUF_MLLI) ? "BUF_MLLI" : "BUF_INVALID")
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#else
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#define GET_DMA_BUFFER_TYPE(buff_type)
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#endif
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enum dma_buffer_type {
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DMA_NULL_TYPE = -1,
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DMA_SGL_TYPE = 1,
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DMA_BUFF_TYPE = 2,
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};
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struct buff_mgr_handle {
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struct dma_pool *mlli_buffs_pool;
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};
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union buffer_array_entry {
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struct scatterlist *sgl;
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dma_addr_t buffer_dma;
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};
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struct buffer_array {
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unsigned int num_of_buffers;
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union buffer_array_entry entry[MAX_NUM_OF_BUFFERS_IN_MLLI];
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unsigned int offset[MAX_NUM_OF_BUFFERS_IN_MLLI];
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int nents[MAX_NUM_OF_BUFFERS_IN_MLLI];
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int total_data_len[MAX_NUM_OF_BUFFERS_IN_MLLI];
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enum dma_buffer_type type[MAX_NUM_OF_BUFFERS_IN_MLLI];
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bool is_last[MAX_NUM_OF_BUFFERS_IN_MLLI];
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u32 *mlli_nents[MAX_NUM_OF_BUFFERS_IN_MLLI];
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};
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/**
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* ssi_buffer_mgr_get_sgl_nents() - Get scatterlist number of entries.
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*
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* @sg_list: SG list
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* @nbytes: [IN] Total SGL data bytes.
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* @lbytes: [OUT] Returns the amount of bytes at the last entry
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*/
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static unsigned int ssi_buffer_mgr_get_sgl_nents(
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struct scatterlist *sg_list, unsigned int nbytes, u32 *lbytes, bool *is_chained)
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{
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unsigned int nents = 0;
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while (nbytes != 0) {
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if (sg_is_chain(sg_list)) {
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SSI_LOG_ERR("Unexpected chained entry "
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"in sg (entry =0x%X)\n", nents);
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BUG();
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}
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if (sg_list->length != 0) {
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nents++;
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/* get the number of bytes in the last entry */
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*lbytes = nbytes;
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nbytes -= (sg_list->length > nbytes) ? nbytes : sg_list->length;
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sg_list = sg_next(sg_list);
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} else {
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sg_list = (struct scatterlist *)sg_page(sg_list);
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if (is_chained)
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*is_chained = true;
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}
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}
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SSI_LOG_DEBUG("nents %d last bytes %d\n", nents, *lbytes);
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return nents;
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}
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/**
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* ssi_buffer_mgr_zero_sgl() - Zero scatter scatter list data.
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*
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* @sgl:
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*/
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void ssi_buffer_mgr_zero_sgl(struct scatterlist *sgl, u32 data_len)
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{
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struct scatterlist *current_sg = sgl;
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int sg_index = 0;
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while (sg_index <= data_len) {
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if (!current_sg) {
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/* reached the end of the sgl --> just return back */
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return;
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}
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memset(sg_virt(current_sg), 0, current_sg->length);
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sg_index += current_sg->length;
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current_sg = sg_next(current_sg);
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}
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}
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/**
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* ssi_buffer_mgr_copy_scatterlist_portion() - Copy scatter list data,
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* from to_skip to end, to dest and vice versa
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*
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* @dest:
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* @sg:
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* @to_skip:
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* @end:
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* @direct:
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*/
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void ssi_buffer_mgr_copy_scatterlist_portion(
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u8 *dest, struct scatterlist *sg,
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u32 to_skip, u32 end,
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enum ssi_sg_cpy_direct direct)
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{
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u32 nents, lbytes;
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nents = ssi_buffer_mgr_get_sgl_nents(sg, end, &lbytes, NULL);
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sg_copy_buffer(sg, nents, (void *)dest, (end - to_skip + 1), to_skip,
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(direct == SSI_SG_TO_BUF));
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}
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static inline int ssi_buffer_mgr_render_buff_to_mlli(
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dma_addr_t buff_dma, u32 buff_size, u32 *curr_nents,
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u32 **mlli_entry_pp)
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{
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u32 *mlli_entry_p = *mlli_entry_pp;
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u32 new_nents;
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/* Verify there is no memory overflow*/
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new_nents = (*curr_nents + buff_size / CC_MAX_MLLI_ENTRY_SIZE + 1);
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if (new_nents > MAX_NUM_OF_TOTAL_MLLI_ENTRIES)
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return -ENOMEM;
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/*handle buffer longer than 64 kbytes */
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while (buff_size > CC_MAX_MLLI_ENTRY_SIZE) {
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cc_lli_set_addr(mlli_entry_p, buff_dma);
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cc_lli_set_size(mlli_entry_p, CC_MAX_MLLI_ENTRY_SIZE);
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SSI_LOG_DEBUG("entry[%d]: single_buff=0x%08X size=%08X\n", *curr_nents,
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mlli_entry_p[LLI_WORD0_OFFSET],
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mlli_entry_p[LLI_WORD1_OFFSET]);
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buff_dma += CC_MAX_MLLI_ENTRY_SIZE;
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buff_size -= CC_MAX_MLLI_ENTRY_SIZE;
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mlli_entry_p = mlli_entry_p + 2;
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(*curr_nents)++;
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}
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/*Last entry */
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cc_lli_set_addr(mlli_entry_p, buff_dma);
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cc_lli_set_size(mlli_entry_p, buff_size);
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SSI_LOG_DEBUG("entry[%d]: single_buff=0x%08X size=%08X\n", *curr_nents,
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mlli_entry_p[LLI_WORD0_OFFSET],
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mlli_entry_p[LLI_WORD1_OFFSET]);
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mlli_entry_p = mlli_entry_p + 2;
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*mlli_entry_pp = mlli_entry_p;
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(*curr_nents)++;
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return 0;
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}
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static inline int ssi_buffer_mgr_render_scatterlist_to_mlli(
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struct scatterlist *sgl, u32 sgl_data_len, u32 sgl_offset,
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u32 *curr_nents, u32 **mlli_entry_pp)
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{
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struct scatterlist *curr_sgl = sgl;
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u32 *mlli_entry_p = *mlli_entry_pp;
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s32 rc = 0;
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for ( ; (curr_sgl) && (sgl_data_len != 0);
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curr_sgl = sg_next(curr_sgl)) {
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u32 entry_data_len =
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(sgl_data_len > sg_dma_len(curr_sgl) - sgl_offset) ?
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sg_dma_len(curr_sgl) - sgl_offset :
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sgl_data_len;
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sgl_data_len -= entry_data_len;
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rc = ssi_buffer_mgr_render_buff_to_mlli(
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sg_dma_address(curr_sgl) + sgl_offset, entry_data_len,
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curr_nents, &mlli_entry_p);
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if (rc != 0)
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return rc;
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sgl_offset = 0;
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}
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*mlli_entry_pp = mlli_entry_p;
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return 0;
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}
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static int ssi_buffer_mgr_generate_mlli(
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struct device *dev,
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struct buffer_array *sg_data,
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struct mlli_params *mlli_params)
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{
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u32 *mlli_p;
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u32 total_nents = 0, prev_total_nents = 0;
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int rc = 0, i;
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SSI_LOG_DEBUG("NUM of SG's = %d\n", sg_data->num_of_buffers);
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/* Allocate memory from the pointed pool */
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mlli_params->mlli_virt_addr = dma_pool_alloc(
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mlli_params->curr_pool, GFP_KERNEL,
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&mlli_params->mlli_dma_addr);
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if (unlikely(!mlli_params->mlli_virt_addr)) {
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SSI_LOG_ERR("dma_pool_alloc() failed\n");
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rc = -ENOMEM;
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goto build_mlli_exit;
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}
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/* Point to start of MLLI */
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mlli_p = (u32 *)mlli_params->mlli_virt_addr;
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/* go over all SG's and link it to one MLLI table */
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for (i = 0; i < sg_data->num_of_buffers; i++) {
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if (sg_data->type[i] == DMA_SGL_TYPE)
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rc = ssi_buffer_mgr_render_scatterlist_to_mlli(
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sg_data->entry[i].sgl,
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sg_data->total_data_len[i], sg_data->offset[i], &total_nents,
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&mlli_p);
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else /*DMA_BUFF_TYPE*/
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rc = ssi_buffer_mgr_render_buff_to_mlli(
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sg_data->entry[i].buffer_dma,
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sg_data->total_data_len[i], &total_nents,
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&mlli_p);
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if (rc != 0)
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return rc;
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/* set last bit in the current table */
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if (sg_data->mlli_nents[i]) {
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/*Calculate the current MLLI table length for the
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*length field in the descriptor
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*/
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*sg_data->mlli_nents[i] +=
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(total_nents - prev_total_nents);
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prev_total_nents = total_nents;
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}
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}
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/* Set MLLI size for the bypass operation */
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mlli_params->mlli_len = (total_nents * LLI_ENTRY_BYTE_SIZE);
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SSI_LOG_DEBUG("MLLI params: "
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"virt_addr=%pK dma_addr=%pad mlli_len=0x%X\n",
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mlli_params->mlli_virt_addr,
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mlli_params->mlli_dma_addr,
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mlli_params->mlli_len);
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build_mlli_exit:
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return rc;
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}
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static inline void ssi_buffer_mgr_add_buffer_entry(
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struct buffer_array *sgl_data,
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dma_addr_t buffer_dma, unsigned int buffer_len,
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bool is_last_entry, u32 *mlli_nents)
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{
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unsigned int index = sgl_data->num_of_buffers;
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SSI_LOG_DEBUG("index=%u single_buff=%pad "
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"buffer_len=0x%08X is_last=%d\n",
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index, buffer_dma, buffer_len, is_last_entry);
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sgl_data->nents[index] = 1;
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sgl_data->entry[index].buffer_dma = buffer_dma;
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sgl_data->offset[index] = 0;
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sgl_data->total_data_len[index] = buffer_len;
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sgl_data->type[index] = DMA_BUFF_TYPE;
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sgl_data->is_last[index] = is_last_entry;
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sgl_data->mlli_nents[index] = mlli_nents;
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if (sgl_data->mlli_nents[index])
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*sgl_data->mlli_nents[index] = 0;
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sgl_data->num_of_buffers++;
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}
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static inline void ssi_buffer_mgr_add_scatterlist_entry(
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struct buffer_array *sgl_data,
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unsigned int nents,
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struct scatterlist *sgl,
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unsigned int data_len,
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unsigned int data_offset,
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bool is_last_table,
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u32 *mlli_nents)
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{
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unsigned int index = sgl_data->num_of_buffers;
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SSI_LOG_DEBUG("index=%u nents=%u sgl=%pK data_len=0x%08X is_last=%d\n",
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index, nents, sgl, data_len, is_last_table);
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sgl_data->nents[index] = nents;
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sgl_data->entry[index].sgl = sgl;
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sgl_data->offset[index] = data_offset;
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sgl_data->total_data_len[index] = data_len;
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sgl_data->type[index] = DMA_SGL_TYPE;
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sgl_data->is_last[index] = is_last_table;
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sgl_data->mlli_nents[index] = mlli_nents;
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if (sgl_data->mlli_nents[index])
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*sgl_data->mlli_nents[index] = 0;
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sgl_data->num_of_buffers++;
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}
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static int
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ssi_buffer_mgr_dma_map_sg(struct device *dev, struct scatterlist *sg, u32 nents,
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enum dma_data_direction direction)
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{
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u32 i, j;
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struct scatterlist *l_sg = sg;
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for (i = 0; i < nents; i++) {
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if (!l_sg)
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break;
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if (unlikely(dma_map_sg(dev, l_sg, 1, direction) != 1)) {
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SSI_LOG_ERR("dma_map_page() sg buffer failed\n");
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goto err;
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}
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l_sg = sg_next(l_sg);
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}
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return nents;
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err:
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/* Restore mapped parts */
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for (j = 0; j < i; j++) {
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if (!sg)
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break;
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dma_unmap_sg(dev, sg, 1, direction);
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sg = sg_next(sg);
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}
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return 0;
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}
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static int ssi_buffer_mgr_map_scatterlist(
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struct device *dev, struct scatterlist *sg,
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unsigned int nbytes, int direction,
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u32 *nents, u32 max_sg_nents,
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u32 *lbytes, u32 *mapped_nents)
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{
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bool is_chained = false;
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if (sg_is_last(sg)) {
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/* One entry only case -set to DLLI */
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if (unlikely(dma_map_sg(dev, sg, 1, direction) != 1)) {
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SSI_LOG_ERR("dma_map_sg() single buffer failed\n");
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return -ENOMEM;
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}
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SSI_LOG_DEBUG("Mapped sg: dma_address=%pad "
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"page=%p addr=%pK offset=%u "
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"length=%u\n",
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sg_dma_address(sg),
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sg_page(sg),
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sg_virt(sg),
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sg->offset, sg->length);
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*lbytes = nbytes;
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*nents = 1;
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*mapped_nents = 1;
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} else { /*sg_is_last*/
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*nents = ssi_buffer_mgr_get_sgl_nents(sg, nbytes, lbytes,
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&is_chained);
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if (*nents > max_sg_nents) {
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*nents = 0;
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SSI_LOG_ERR("Too many fragments. current %d max %d\n",
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*nents, max_sg_nents);
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return -ENOMEM;
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}
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if (!is_chained) {
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/* In case of mmu the number of mapped nents might
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* be changed from the original sgl nents
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*/
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*mapped_nents = dma_map_sg(dev, sg, *nents, direction);
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if (unlikely(*mapped_nents == 0)) {
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*nents = 0;
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SSI_LOG_ERR("dma_map_sg() sg buffer failed\n");
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return -ENOMEM;
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}
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} else {
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/*In this case the driver maps entry by entry so it
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* must have the same nents before and after map
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*/
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*mapped_nents = ssi_buffer_mgr_dma_map_sg(dev,
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sg,
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*nents,
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direction);
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if (unlikely(*mapped_nents != *nents)) {
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*nents = *mapped_nents;
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SSI_LOG_ERR("dma_map_sg() sg buffer failed\n");
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return -ENOMEM;
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}
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}
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}
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return 0;
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}
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static inline int
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ssi_aead_handle_config_buf(struct device *dev,
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struct aead_req_ctx *areq_ctx,
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u8 *config_data,
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struct buffer_array *sg_data,
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unsigned int assoclen)
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{
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SSI_LOG_DEBUG(" handle additional data config set to DLLI\n");
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/* create sg for the current buffer */
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sg_init_one(&areq_ctx->ccm_adata_sg, config_data, AES_BLOCK_SIZE + areq_ctx->ccm_hdr_size);
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if (unlikely(dma_map_sg(dev, &areq_ctx->ccm_adata_sg, 1,
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DMA_TO_DEVICE) != 1)) {
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SSI_LOG_ERR("dma_map_sg() "
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"config buffer failed\n");
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return -ENOMEM;
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}
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SSI_LOG_DEBUG("Mapped curr_buff: dma_address=%pad "
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"page=%p addr=%pK "
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"offset=%u length=%u\n",
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sg_dma_address(&areq_ctx->ccm_adata_sg),
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sg_page(&areq_ctx->ccm_adata_sg),
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sg_virt(&areq_ctx->ccm_adata_sg),
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areq_ctx->ccm_adata_sg.offset,
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areq_ctx->ccm_adata_sg.length);
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/* prepare for case of MLLI */
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if (assoclen > 0) {
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ssi_buffer_mgr_add_scatterlist_entry(sg_data, 1,
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&areq_ctx->ccm_adata_sg,
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(AES_BLOCK_SIZE + areq_ctx->ccm_hdr_size),
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0, false, NULL);
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}
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return 0;
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}
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static inline int ssi_ahash_handle_curr_buf(struct device *dev,
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struct ahash_req_ctx *areq_ctx,
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u8 *curr_buff,
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u32 curr_buff_cnt,
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struct buffer_array *sg_data)
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{
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SSI_LOG_DEBUG(" handle curr buff %x set to DLLI\n", curr_buff_cnt);
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/* create sg for the current buffer */
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sg_init_one(areq_ctx->buff_sg, curr_buff, curr_buff_cnt);
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if (unlikely(dma_map_sg(dev, areq_ctx->buff_sg, 1,
|
|
DMA_TO_DEVICE) != 1)) {
|
|
SSI_LOG_ERR("dma_map_sg() "
|
|
"src buffer failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
SSI_LOG_DEBUG("Mapped curr_buff: dma_address=%pad "
|
|
"page=%p addr=%pK "
|
|
"offset=%u length=%u\n",
|
|
sg_dma_address(areq_ctx->buff_sg),
|
|
sg_page(areq_ctx->buff_sg),
|
|
sg_virt(areq_ctx->buff_sg),
|
|
areq_ctx->buff_sg->offset,
|
|
areq_ctx->buff_sg->length);
|
|
areq_ctx->data_dma_buf_type = SSI_DMA_BUF_DLLI;
|
|
areq_ctx->curr_sg = areq_ctx->buff_sg;
|
|
areq_ctx->in_nents = 0;
|
|
/* prepare for case of MLLI */
|
|
ssi_buffer_mgr_add_scatterlist_entry(sg_data, 1, areq_ctx->buff_sg,
|
|
curr_buff_cnt, 0, false, NULL);
|
|
return 0;
|
|
}
|
|
|
|
void ssi_buffer_mgr_unmap_blkcipher_request(
|
|
struct device *dev,
|
|
void *ctx,
|
|
unsigned int ivsize,
|
|
struct scatterlist *src,
|
|
struct scatterlist *dst)
|
|
{
|
|
struct blkcipher_req_ctx *req_ctx = (struct blkcipher_req_ctx *)ctx;
|
|
|
|
if (likely(req_ctx->gen_ctx.iv_dma_addr != 0)) {
|
|
SSI_LOG_DEBUG("Unmapped iv: iv_dma_addr=%pad iv_size=%u\n",
|
|
req_ctx->gen_ctx.iv_dma_addr,
|
|
ivsize);
|
|
dma_unmap_single(dev, req_ctx->gen_ctx.iv_dma_addr,
|
|
ivsize,
|
|
req_ctx->is_giv ? DMA_BIDIRECTIONAL :
|
|
DMA_TO_DEVICE);
|
|
}
|
|
/* Release pool */
|
|
if (req_ctx->dma_buf_type == SSI_DMA_BUF_MLLI &&
|
|
req_ctx->mlli_params.mlli_virt_addr) {
|
|
dma_pool_free(req_ctx->mlli_params.curr_pool,
|
|
req_ctx->mlli_params.mlli_virt_addr,
|
|
req_ctx->mlli_params.mlli_dma_addr);
|
|
}
|
|
|
|
dma_unmap_sg(dev, src, req_ctx->in_nents, DMA_BIDIRECTIONAL);
|
|
SSI_LOG_DEBUG("Unmapped req->src=%pK\n", sg_virt(src));
|
|
|
|
if (src != dst) {
|
|
dma_unmap_sg(dev, dst, req_ctx->out_nents, DMA_BIDIRECTIONAL);
|
|
SSI_LOG_DEBUG("Unmapped req->dst=%pK\n", sg_virt(dst));
|
|
}
|
|
}
|
|
|
|
int ssi_buffer_mgr_map_blkcipher_request(
|
|
struct ssi_drvdata *drvdata,
|
|
void *ctx,
|
|
unsigned int ivsize,
|
|
unsigned int nbytes,
|
|
void *info,
|
|
struct scatterlist *src,
|
|
struct scatterlist *dst)
|
|
{
|
|
struct blkcipher_req_ctx *req_ctx = (struct blkcipher_req_ctx *)ctx;
|
|
struct mlli_params *mlli_params = &req_ctx->mlli_params;
|
|
struct buff_mgr_handle *buff_mgr = drvdata->buff_mgr_handle;
|
|
struct device *dev = &drvdata->plat_dev->dev;
|
|
struct buffer_array sg_data;
|
|
u32 dummy = 0;
|
|
int rc = 0;
|
|
u32 mapped_nents = 0;
|
|
|
|
req_ctx->dma_buf_type = SSI_DMA_BUF_DLLI;
|
|
mlli_params->curr_pool = NULL;
|
|
sg_data.num_of_buffers = 0;
|
|
|
|
/* Map IV buffer */
|
|
if (likely(ivsize != 0)) {
|
|
dump_byte_array("iv", (u8 *)info, ivsize);
|
|
req_ctx->gen_ctx.iv_dma_addr =
|
|
dma_map_single(dev, (void *)info,
|
|
ivsize,
|
|
req_ctx->is_giv ? DMA_BIDIRECTIONAL :
|
|
DMA_TO_DEVICE);
|
|
if (unlikely(dma_mapping_error(dev,
|
|
req_ctx->gen_ctx.iv_dma_addr))) {
|
|
SSI_LOG_ERR("Mapping iv %u B at va=%pK "
|
|
"for DMA failed\n", ivsize, info);
|
|
return -ENOMEM;
|
|
}
|
|
SSI_LOG_DEBUG("Mapped iv %u B at va=%pK to dma=%pad\n",
|
|
ivsize, info,
|
|
req_ctx->gen_ctx.iv_dma_addr);
|
|
} else {
|
|
req_ctx->gen_ctx.iv_dma_addr = 0;
|
|
}
|
|
|
|
/* Map the src SGL */
|
|
rc = ssi_buffer_mgr_map_scatterlist(dev, src,
|
|
nbytes, DMA_BIDIRECTIONAL,
|
|
&req_ctx->in_nents,
|
|
LLI_MAX_NUM_OF_DATA_ENTRIES, &dummy,
|
|
&mapped_nents);
|
|
if (unlikely(rc != 0)) {
|
|
rc = -ENOMEM;
|
|
goto ablkcipher_exit;
|
|
}
|
|
if (mapped_nents > 1)
|
|
req_ctx->dma_buf_type = SSI_DMA_BUF_MLLI;
|
|
|
|
if (unlikely(src == dst)) {
|
|
/* Handle inplace operation */
|
|
if (unlikely(req_ctx->dma_buf_type == SSI_DMA_BUF_MLLI)) {
|
|
req_ctx->out_nents = 0;
|
|
ssi_buffer_mgr_add_scatterlist_entry(&sg_data,
|
|
req_ctx->in_nents,
|
|
src, nbytes, 0,
|
|
true,
|
|
&req_ctx->in_mlli_nents);
|
|
}
|
|
} else {
|
|
/* Map the dst sg */
|
|
if (unlikely(ssi_buffer_mgr_map_scatterlist(
|
|
dev, dst, nbytes,
|
|
DMA_BIDIRECTIONAL, &req_ctx->out_nents,
|
|
LLI_MAX_NUM_OF_DATA_ENTRIES, &dummy,
|
|
&mapped_nents))){
|
|
rc = -ENOMEM;
|
|
goto ablkcipher_exit;
|
|
}
|
|
if (mapped_nents > 1)
|
|
req_ctx->dma_buf_type = SSI_DMA_BUF_MLLI;
|
|
|
|
if (unlikely((req_ctx->dma_buf_type == SSI_DMA_BUF_MLLI))) {
|
|
ssi_buffer_mgr_add_scatterlist_entry(&sg_data,
|
|
req_ctx->in_nents,
|
|
src, nbytes, 0,
|
|
true,
|
|
&req_ctx->in_mlli_nents);
|
|
ssi_buffer_mgr_add_scatterlist_entry(&sg_data,
|
|
req_ctx->out_nents,
|
|
dst, nbytes, 0,
|
|
true,
|
|
&req_ctx->out_mlli_nents);
|
|
}
|
|
}
|
|
|
|
if (unlikely(req_ctx->dma_buf_type == SSI_DMA_BUF_MLLI)) {
|
|
mlli_params->curr_pool = buff_mgr->mlli_buffs_pool;
|
|
rc = ssi_buffer_mgr_generate_mlli(dev, &sg_data, mlli_params);
|
|
if (unlikely(rc != 0))
|
|
goto ablkcipher_exit;
|
|
}
|
|
|
|
SSI_LOG_DEBUG("areq_ctx->dma_buf_type = %s\n",
|
|
GET_DMA_BUFFER_TYPE(req_ctx->dma_buf_type));
|
|
|
|
return 0;
|
|
|
|
ablkcipher_exit:
|
|
ssi_buffer_mgr_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst);
|
|
return rc;
|
|
}
|
|
|
|
void ssi_buffer_mgr_unmap_aead_request(
|
|
struct device *dev, struct aead_request *req)
|
|
{
|
|
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
|
|
unsigned int hw_iv_size = areq_ctx->hw_iv_size;
|
|
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
|
|
struct ssi_drvdata *drvdata = dev_get_drvdata(dev);
|
|
u32 dummy;
|
|
bool chained;
|
|
u32 size_to_unmap = 0;
|
|
|
|
if (areq_ctx->mac_buf_dma_addr != 0) {
|
|
dma_unmap_single(dev, areq_ctx->mac_buf_dma_addr,
|
|
MAX_MAC_SIZE, DMA_BIDIRECTIONAL);
|
|
}
|
|
|
|
#if SSI_CC_HAS_AES_GCM
|
|
if (areq_ctx->cipher_mode == DRV_CIPHER_GCTR) {
|
|
if (areq_ctx->hkey_dma_addr != 0) {
|
|
dma_unmap_single(dev, areq_ctx->hkey_dma_addr,
|
|
AES_BLOCK_SIZE, DMA_BIDIRECTIONAL);
|
|
}
|
|
|
|
if (areq_ctx->gcm_block_len_dma_addr != 0) {
|
|
dma_unmap_single(dev, areq_ctx->gcm_block_len_dma_addr,
|
|
AES_BLOCK_SIZE, DMA_TO_DEVICE);
|
|
}
|
|
|
|
if (areq_ctx->gcm_iv_inc1_dma_addr != 0) {
|
|
dma_unmap_single(dev, areq_ctx->gcm_iv_inc1_dma_addr,
|
|
AES_BLOCK_SIZE, DMA_TO_DEVICE);
|
|
}
|
|
|
|
if (areq_ctx->gcm_iv_inc2_dma_addr != 0) {
|
|
dma_unmap_single(dev, areq_ctx->gcm_iv_inc2_dma_addr,
|
|
AES_BLOCK_SIZE, DMA_TO_DEVICE);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (areq_ctx->ccm_hdr_size != ccm_header_size_null) {
|
|
if (areq_ctx->ccm_iv0_dma_addr != 0) {
|
|
dma_unmap_single(dev, areq_ctx->ccm_iv0_dma_addr,
|
|
AES_BLOCK_SIZE, DMA_TO_DEVICE);
|
|
}
|
|
|
|
dma_unmap_sg(dev, &areq_ctx->ccm_adata_sg, 1, DMA_TO_DEVICE);
|
|
}
|
|
if (areq_ctx->gen_ctx.iv_dma_addr != 0) {
|
|
dma_unmap_single(dev, areq_ctx->gen_ctx.iv_dma_addr,
|
|
hw_iv_size, DMA_BIDIRECTIONAL);
|
|
}
|
|
|
|
/*In case a pool was set, a table was
|
|
*allocated and should be released
|
|
*/
|
|
if (areq_ctx->mlli_params.curr_pool) {
|
|
SSI_LOG_DEBUG("free MLLI buffer: dma=%pad virt=%pK\n",
|
|
areq_ctx->mlli_params.mlli_dma_addr,
|
|
areq_ctx->mlli_params.mlli_virt_addr);
|
|
dma_pool_free(areq_ctx->mlli_params.curr_pool,
|
|
areq_ctx->mlli_params.mlli_virt_addr,
|
|
areq_ctx->mlli_params.mlli_dma_addr);
|
|
}
|
|
|
|
SSI_LOG_DEBUG("Unmapping src sgl: req->src=%pK areq_ctx->src.nents=%u areq_ctx->assoc.nents=%u assoclen:%u cryptlen=%u\n", sg_virt(req->src), areq_ctx->src.nents, areq_ctx->assoc.nents, req->assoclen, req->cryptlen);
|
|
size_to_unmap = req->assoclen + req->cryptlen;
|
|
if (areq_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_ENCRYPT)
|
|
size_to_unmap += areq_ctx->req_authsize;
|
|
if (areq_ctx->is_gcm4543)
|
|
size_to_unmap += crypto_aead_ivsize(tfm);
|
|
|
|
dma_unmap_sg(dev, req->src, ssi_buffer_mgr_get_sgl_nents(req->src, size_to_unmap, &dummy, &chained), DMA_BIDIRECTIONAL);
|
|
if (unlikely(req->src != req->dst)) {
|
|
SSI_LOG_DEBUG("Unmapping dst sgl: req->dst=%pK\n",
|
|
sg_virt(req->dst));
|
|
dma_unmap_sg(dev, req->dst,
|
|
ssi_buffer_mgr_get_sgl_nents(req->dst,
|
|
size_to_unmap,
|
|
&dummy,
|
|
&chained),
|
|
DMA_BIDIRECTIONAL);
|
|
}
|
|
if (drvdata->coherent &&
|
|
(areq_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT) &&
|
|
likely(req->src == req->dst)) {
|
|
u32 size_to_skip = req->assoclen;
|
|
|
|
if (areq_ctx->is_gcm4543)
|
|
size_to_skip += crypto_aead_ivsize(tfm);
|
|
|
|
/* copy mac to a temporary location to deal with possible
|
|
* data memory overriding that caused by cache coherence problem.
|
|
*/
|
|
ssi_buffer_mgr_copy_scatterlist_portion(
|
|
areq_ctx->backup_mac, req->src,
|
|
size_to_skip + req->cryptlen - areq_ctx->req_authsize,
|
|
size_to_skip + req->cryptlen, SSI_SG_FROM_BUF);
|
|
}
|
|
}
|
|
|
|
static inline int ssi_buffer_mgr_get_aead_icv_nents(
|
|
struct scatterlist *sgl,
|
|
unsigned int sgl_nents,
|
|
unsigned int authsize,
|
|
u32 last_entry_data_size,
|
|
bool *is_icv_fragmented)
|
|
{
|
|
unsigned int icv_max_size = 0;
|
|
unsigned int icv_required_size = authsize > last_entry_data_size ? (authsize - last_entry_data_size) : authsize;
|
|
unsigned int nents;
|
|
unsigned int i;
|
|
|
|
if (sgl_nents < MAX_ICV_NENTS_SUPPORTED) {
|
|
*is_icv_fragmented = false;
|
|
return 0;
|
|
}
|
|
|
|
for (i = 0 ; i < (sgl_nents - MAX_ICV_NENTS_SUPPORTED) ; i++) {
|
|
if (!sgl)
|
|
break;
|
|
sgl = sg_next(sgl);
|
|
}
|
|
|
|
if (sgl)
|
|
icv_max_size = sgl->length;
|
|
|
|
if (last_entry_data_size > authsize) {
|
|
nents = 0; /* ICV attached to data in last entry (not fragmented!) */
|
|
*is_icv_fragmented = false;
|
|
} else if (last_entry_data_size == authsize) {
|
|
nents = 1; /* ICV placed in whole last entry (not fragmented!) */
|
|
*is_icv_fragmented = false;
|
|
} else if (icv_max_size > icv_required_size) {
|
|
nents = 1;
|
|
*is_icv_fragmented = true;
|
|
} else if (icv_max_size == icv_required_size) {
|
|
nents = 2;
|
|
*is_icv_fragmented = true;
|
|
} else {
|
|
SSI_LOG_ERR("Unsupported num. of ICV fragments (> %d)\n",
|
|
MAX_ICV_NENTS_SUPPORTED);
|
|
nents = -1; /*unsupported*/
|
|
}
|
|
SSI_LOG_DEBUG("is_frag=%s icv_nents=%u\n",
|
|
(*is_icv_fragmented ? "true" : "false"), nents);
|
|
|
|
return nents;
|
|
}
|
|
|
|
static inline int ssi_buffer_mgr_aead_chain_iv(
|
|
struct ssi_drvdata *drvdata,
|
|
struct aead_request *req,
|
|
struct buffer_array *sg_data,
|
|
bool is_last, bool do_chain)
|
|
{
|
|
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
|
|
unsigned int hw_iv_size = areq_ctx->hw_iv_size;
|
|
struct device *dev = &drvdata->plat_dev->dev;
|
|
int rc = 0;
|
|
|
|
if (unlikely(!req->iv)) {
|
|
areq_ctx->gen_ctx.iv_dma_addr = 0;
|
|
goto chain_iv_exit;
|
|
}
|
|
|
|
areq_ctx->gen_ctx.iv_dma_addr = dma_map_single(dev, req->iv, hw_iv_size,
|
|
DMA_BIDIRECTIONAL);
|
|
if (unlikely(dma_mapping_error(dev, areq_ctx->gen_ctx.iv_dma_addr))) {
|
|
SSI_LOG_ERR("Mapping iv %u B at va=%pK for DMA failed\n",
|
|
hw_iv_size, req->iv);
|
|
rc = -ENOMEM;
|
|
goto chain_iv_exit;
|
|
}
|
|
|
|
SSI_LOG_DEBUG("Mapped iv %u B at va=%pK to dma=%pad\n",
|
|
hw_iv_size, req->iv,
|
|
areq_ctx->gen_ctx.iv_dma_addr);
|
|
if (do_chain && areq_ctx->plaintext_authenticate_only) { // TODO: what about CTR?? ask Ron
|
|
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
|
|
unsigned int iv_size_to_authenc = crypto_aead_ivsize(tfm);
|
|
unsigned int iv_ofs = GCM_BLOCK_RFC4_IV_OFFSET;
|
|
/* Chain to given list */
|
|
ssi_buffer_mgr_add_buffer_entry(
|
|
sg_data, areq_ctx->gen_ctx.iv_dma_addr + iv_ofs,
|
|
iv_size_to_authenc, is_last,
|
|
&areq_ctx->assoc.mlli_nents);
|
|
areq_ctx->assoc_buff_type = SSI_DMA_BUF_MLLI;
|
|
}
|
|
|
|
chain_iv_exit:
|
|
return rc;
|
|
}
|
|
|
|
static inline int ssi_buffer_mgr_aead_chain_assoc(
|
|
struct ssi_drvdata *drvdata,
|
|
struct aead_request *req,
|
|
struct buffer_array *sg_data,
|
|
bool is_last, bool do_chain)
|
|
{
|
|
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
|
|
int rc = 0;
|
|
u32 mapped_nents = 0;
|
|
struct scatterlist *current_sg = req->src;
|
|
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
|
|
unsigned int sg_index = 0;
|
|
u32 size_of_assoc = req->assoclen;
|
|
|
|
if (areq_ctx->is_gcm4543)
|
|
size_of_assoc += crypto_aead_ivsize(tfm);
|
|
|
|
if (!sg_data) {
|
|
rc = -EINVAL;
|
|
goto chain_assoc_exit;
|
|
}
|
|
|
|
if (unlikely(req->assoclen == 0)) {
|
|
areq_ctx->assoc_buff_type = SSI_DMA_BUF_NULL;
|
|
areq_ctx->assoc.nents = 0;
|
|
areq_ctx->assoc.mlli_nents = 0;
|
|
SSI_LOG_DEBUG("Chain assoc of length 0: buff_type=%s nents=%u\n",
|
|
GET_DMA_BUFFER_TYPE(areq_ctx->assoc_buff_type),
|
|
areq_ctx->assoc.nents);
|
|
goto chain_assoc_exit;
|
|
}
|
|
|
|
//iterate over the sgl to see how many entries are for associated data
|
|
//it is assumed that if we reach here , the sgl is already mapped
|
|
sg_index = current_sg->length;
|
|
if (sg_index > size_of_assoc) { //the first entry in the scatter list contains all the associated data
|
|
mapped_nents++;
|
|
} else {
|
|
while (sg_index <= size_of_assoc) {
|
|
current_sg = sg_next(current_sg);
|
|
//if have reached the end of the sgl, then this is unexpected
|
|
if (!current_sg) {
|
|
SSI_LOG_ERR("reached end of sg list. unexpected\n");
|
|
BUG();
|
|
}
|
|
sg_index += current_sg->length;
|
|
mapped_nents++;
|
|
}
|
|
}
|
|
if (unlikely(mapped_nents > LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES)) {
|
|
SSI_LOG_ERR("Too many fragments. current %d max %d\n",
|
|
mapped_nents, LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES);
|
|
return -ENOMEM;
|
|
}
|
|
areq_ctx->assoc.nents = mapped_nents;
|
|
|
|
/* in CCM case we have additional entry for
|
|
* ccm header configurations
|
|
*/
|
|
if (areq_ctx->ccm_hdr_size != ccm_header_size_null) {
|
|
if (unlikely((mapped_nents + 1) >
|
|
LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES)) {
|
|
SSI_LOG_ERR("CCM case.Too many fragments. Current %d max %d\n",
|
|
(areq_ctx->assoc.nents + 1),
|
|
LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES);
|
|
rc = -ENOMEM;
|
|
goto chain_assoc_exit;
|
|
}
|
|
}
|
|
|
|
if (likely(mapped_nents == 1) &&
|
|
(areq_ctx->ccm_hdr_size == ccm_header_size_null))
|
|
areq_ctx->assoc_buff_type = SSI_DMA_BUF_DLLI;
|
|
else
|
|
areq_ctx->assoc_buff_type = SSI_DMA_BUF_MLLI;
|
|
|
|
if (unlikely((do_chain) ||
|
|
(areq_ctx->assoc_buff_type == SSI_DMA_BUF_MLLI))) {
|
|
SSI_LOG_DEBUG("Chain assoc: buff_type=%s nents=%u\n",
|
|
GET_DMA_BUFFER_TYPE(areq_ctx->assoc_buff_type),
|
|
areq_ctx->assoc.nents);
|
|
ssi_buffer_mgr_add_scatterlist_entry(
|
|
sg_data, areq_ctx->assoc.nents,
|
|
req->src, req->assoclen, 0, is_last,
|
|
&areq_ctx->assoc.mlli_nents);
|
|
areq_ctx->assoc_buff_type = SSI_DMA_BUF_MLLI;
|
|
}
|
|
|
|
chain_assoc_exit:
|
|
return rc;
|
|
}
|
|
|
|
static inline void ssi_buffer_mgr_prepare_aead_data_dlli(
|
|
struct aead_request *req,
|
|
u32 *src_last_bytes, u32 *dst_last_bytes)
|
|
{
|
|
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
|
|
enum drv_crypto_direction direct = areq_ctx->gen_ctx.op_type;
|
|
unsigned int authsize = areq_ctx->req_authsize;
|
|
|
|
areq_ctx->is_icv_fragmented = false;
|
|
if (likely(req->src == req->dst)) {
|
|
/*INPLACE*/
|
|
areq_ctx->icv_dma_addr = sg_dma_address(
|
|
areq_ctx->src_sgl) +
|
|
(*src_last_bytes - authsize);
|
|
areq_ctx->icv_virt_addr = sg_virt(
|
|
areq_ctx->src_sgl) +
|
|
(*src_last_bytes - authsize);
|
|
} else if (direct == DRV_CRYPTO_DIRECTION_DECRYPT) {
|
|
/*NON-INPLACE and DECRYPT*/
|
|
areq_ctx->icv_dma_addr = sg_dma_address(
|
|
areq_ctx->src_sgl) +
|
|
(*src_last_bytes - authsize);
|
|
areq_ctx->icv_virt_addr = sg_virt(
|
|
areq_ctx->src_sgl) +
|
|
(*src_last_bytes - authsize);
|
|
} else {
|
|
/*NON-INPLACE and ENCRYPT*/
|
|
areq_ctx->icv_dma_addr = sg_dma_address(
|
|
areq_ctx->dst_sgl) +
|
|
(*dst_last_bytes - authsize);
|
|
areq_ctx->icv_virt_addr = sg_virt(
|
|
areq_ctx->dst_sgl) +
|
|
(*dst_last_bytes - authsize);
|
|
}
|
|
}
|
|
|
|
static inline int ssi_buffer_mgr_prepare_aead_data_mlli(
|
|
struct ssi_drvdata *drvdata,
|
|
struct aead_request *req,
|
|
struct buffer_array *sg_data,
|
|
u32 *src_last_bytes, u32 *dst_last_bytes,
|
|
bool is_last_table)
|
|
{
|
|
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
|
|
enum drv_crypto_direction direct = areq_ctx->gen_ctx.op_type;
|
|
unsigned int authsize = areq_ctx->req_authsize;
|
|
int rc = 0, icv_nents;
|
|
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
|
|
|
|
if (likely(req->src == req->dst)) {
|
|
/*INPLACE*/
|
|
ssi_buffer_mgr_add_scatterlist_entry(sg_data,
|
|
areq_ctx->src.nents,
|
|
areq_ctx->src_sgl,
|
|
areq_ctx->cryptlen,
|
|
areq_ctx->src_offset,
|
|
is_last_table,
|
|
&areq_ctx->src.mlli_nents);
|
|
|
|
icv_nents = ssi_buffer_mgr_get_aead_icv_nents(areq_ctx->src_sgl,
|
|
areq_ctx->src.nents,
|
|
authsize,
|
|
*src_last_bytes,
|
|
&areq_ctx->is_icv_fragmented);
|
|
if (unlikely(icv_nents < 0)) {
|
|
rc = -ENOTSUPP;
|
|
goto prepare_data_mlli_exit;
|
|
}
|
|
|
|
if (unlikely(areq_ctx->is_icv_fragmented)) {
|
|
/* Backup happens only when ICV is fragmented, ICV
|
|
* verification is made by CPU compare in order to simplify
|
|
* MAC verification upon request completion
|
|
*/
|
|
if (direct == DRV_CRYPTO_DIRECTION_DECRYPT) {
|
|
if (!drvdata->coherent) {
|
|
/* In coherent platforms (e.g. ACP)
|
|
* already copying ICV for any
|
|
* INPLACE-DECRYPT operation, hence
|
|
* we must neglect this code.
|
|
*/
|
|
u32 skip = req->assoclen;
|
|
|
|
if (areq_ctx->is_gcm4543)
|
|
skip += crypto_aead_ivsize(tfm);
|
|
|
|
ssi_buffer_mgr_copy_scatterlist_portion(
|
|
areq_ctx->backup_mac, req->src,
|
|
(skip + req->cryptlen -
|
|
areq_ctx->req_authsize),
|
|
skip + req->cryptlen,
|
|
SSI_SG_TO_BUF);
|
|
}
|
|
areq_ctx->icv_virt_addr = areq_ctx->backup_mac;
|
|
} else {
|
|
areq_ctx->icv_virt_addr = areq_ctx->mac_buf;
|
|
areq_ctx->icv_dma_addr = areq_ctx->mac_buf_dma_addr;
|
|
}
|
|
} else { /* Contig. ICV */
|
|
/*Should hanlde if the sg is not contig.*/
|
|
areq_ctx->icv_dma_addr = sg_dma_address(
|
|
&areq_ctx->src_sgl[areq_ctx->src.nents - 1]) +
|
|
(*src_last_bytes - authsize);
|
|
areq_ctx->icv_virt_addr = sg_virt(
|
|
&areq_ctx->src_sgl[areq_ctx->src.nents - 1]) +
|
|
(*src_last_bytes - authsize);
|
|
}
|
|
|
|
} else if (direct == DRV_CRYPTO_DIRECTION_DECRYPT) {
|
|
/*NON-INPLACE and DECRYPT*/
|
|
ssi_buffer_mgr_add_scatterlist_entry(sg_data,
|
|
areq_ctx->src.nents,
|
|
areq_ctx->src_sgl,
|
|
areq_ctx->cryptlen,
|
|
areq_ctx->src_offset,
|
|
is_last_table,
|
|
&areq_ctx->src.mlli_nents);
|
|
ssi_buffer_mgr_add_scatterlist_entry(sg_data,
|
|
areq_ctx->dst.nents,
|
|
areq_ctx->dst_sgl,
|
|
areq_ctx->cryptlen,
|
|
areq_ctx->dst_offset,
|
|
is_last_table,
|
|
&areq_ctx->dst.mlli_nents);
|
|
|
|
icv_nents = ssi_buffer_mgr_get_aead_icv_nents(areq_ctx->src_sgl,
|
|
areq_ctx->src.nents,
|
|
authsize,
|
|
*src_last_bytes,
|
|
&areq_ctx->is_icv_fragmented);
|
|
if (unlikely(icv_nents < 0)) {
|
|
rc = -ENOTSUPP;
|
|
goto prepare_data_mlli_exit;
|
|
}
|
|
|
|
if (unlikely(areq_ctx->is_icv_fragmented)) {
|
|
/* Backup happens only when ICV is fragmented, ICV
|
|
* verification is made by CPU compare in order to simplify
|
|
* MAC verification upon request completion
|
|
*/
|
|
u32 size_to_skip = req->assoclen;
|
|
|
|
if (areq_ctx->is_gcm4543)
|
|
size_to_skip += crypto_aead_ivsize(tfm);
|
|
|
|
ssi_buffer_mgr_copy_scatterlist_portion(
|
|
areq_ctx->backup_mac, req->src,
|
|
size_to_skip + req->cryptlen - areq_ctx->req_authsize,
|
|
size_to_skip + req->cryptlen, SSI_SG_TO_BUF);
|
|
areq_ctx->icv_virt_addr = areq_ctx->backup_mac;
|
|
} else { /* Contig. ICV */
|
|
/*Should hanlde if the sg is not contig.*/
|
|
areq_ctx->icv_dma_addr = sg_dma_address(
|
|
&areq_ctx->src_sgl[areq_ctx->src.nents - 1]) +
|
|
(*src_last_bytes - authsize);
|
|
areq_ctx->icv_virt_addr = sg_virt(
|
|
&areq_ctx->src_sgl[areq_ctx->src.nents - 1]) +
|
|
(*src_last_bytes - authsize);
|
|
}
|
|
|
|
} else {
|
|
/*NON-INPLACE and ENCRYPT*/
|
|
ssi_buffer_mgr_add_scatterlist_entry(sg_data,
|
|
areq_ctx->dst.nents,
|
|
areq_ctx->dst_sgl,
|
|
areq_ctx->cryptlen,
|
|
areq_ctx->dst_offset,
|
|
is_last_table,
|
|
&areq_ctx->dst.mlli_nents);
|
|
ssi_buffer_mgr_add_scatterlist_entry(sg_data,
|
|
areq_ctx->src.nents,
|
|
areq_ctx->src_sgl,
|
|
areq_ctx->cryptlen,
|
|
areq_ctx->src_offset,
|
|
is_last_table,
|
|
&areq_ctx->src.mlli_nents);
|
|
|
|
icv_nents = ssi_buffer_mgr_get_aead_icv_nents(areq_ctx->dst_sgl,
|
|
areq_ctx->dst.nents,
|
|
authsize,
|
|
*dst_last_bytes,
|
|
&areq_ctx->is_icv_fragmented);
|
|
if (unlikely(icv_nents < 0)) {
|
|
rc = -ENOTSUPP;
|
|
goto prepare_data_mlli_exit;
|
|
}
|
|
|
|
if (likely(!areq_ctx->is_icv_fragmented)) {
|
|
/* Contig. ICV */
|
|
areq_ctx->icv_dma_addr = sg_dma_address(
|
|
&areq_ctx->dst_sgl[areq_ctx->dst.nents - 1]) +
|
|
(*dst_last_bytes - authsize);
|
|
areq_ctx->icv_virt_addr = sg_virt(
|
|
&areq_ctx->dst_sgl[areq_ctx->dst.nents - 1]) +
|
|
(*dst_last_bytes - authsize);
|
|
} else {
|
|
areq_ctx->icv_dma_addr = areq_ctx->mac_buf_dma_addr;
|
|
areq_ctx->icv_virt_addr = areq_ctx->mac_buf;
|
|
}
|
|
}
|
|
|
|
prepare_data_mlli_exit:
|
|
return rc;
|
|
}
|
|
|
|
static inline int ssi_buffer_mgr_aead_chain_data(
|
|
struct ssi_drvdata *drvdata,
|
|
struct aead_request *req,
|
|
struct buffer_array *sg_data,
|
|
bool is_last_table, bool do_chain)
|
|
{
|
|
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
|
|
struct device *dev = &drvdata->plat_dev->dev;
|
|
enum drv_crypto_direction direct = areq_ctx->gen_ctx.op_type;
|
|
unsigned int authsize = areq_ctx->req_authsize;
|
|
int src_last_bytes = 0, dst_last_bytes = 0;
|
|
int rc = 0;
|
|
u32 src_mapped_nents = 0, dst_mapped_nents = 0;
|
|
u32 offset = 0;
|
|
unsigned int size_for_map = req->assoclen + req->cryptlen; /*non-inplace mode*/
|
|
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
|
|
u32 sg_index = 0;
|
|
bool chained = false;
|
|
bool is_gcm4543 = areq_ctx->is_gcm4543;
|
|
u32 size_to_skip = req->assoclen;
|
|
|
|
if (is_gcm4543)
|
|
size_to_skip += crypto_aead_ivsize(tfm);
|
|
|
|
offset = size_to_skip;
|
|
|
|
if (!sg_data) {
|
|
rc = -EINVAL;
|
|
goto chain_data_exit;
|
|
}
|
|
areq_ctx->src_sgl = req->src;
|
|
areq_ctx->dst_sgl = req->dst;
|
|
|
|
if (is_gcm4543)
|
|
size_for_map += crypto_aead_ivsize(tfm);
|
|
|
|
size_for_map += (direct == DRV_CRYPTO_DIRECTION_ENCRYPT) ? authsize : 0;
|
|
src_mapped_nents = ssi_buffer_mgr_get_sgl_nents(req->src, size_for_map, &src_last_bytes, &chained);
|
|
sg_index = areq_ctx->src_sgl->length;
|
|
//check where the data starts
|
|
while (sg_index <= size_to_skip) {
|
|
offset -= areq_ctx->src_sgl->length;
|
|
areq_ctx->src_sgl = sg_next(areq_ctx->src_sgl);
|
|
//if have reached the end of the sgl, then this is unexpected
|
|
if (!areq_ctx->src_sgl) {
|
|
SSI_LOG_ERR("reached end of sg list. unexpected\n");
|
|
BUG();
|
|
}
|
|
sg_index += areq_ctx->src_sgl->length;
|
|
src_mapped_nents--;
|
|
}
|
|
if (unlikely(src_mapped_nents > LLI_MAX_NUM_OF_DATA_ENTRIES)) {
|
|
SSI_LOG_ERR("Too many fragments. current %d max %d\n",
|
|
src_mapped_nents, LLI_MAX_NUM_OF_DATA_ENTRIES);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
areq_ctx->src.nents = src_mapped_nents;
|
|
|
|
areq_ctx->src_offset = offset;
|
|
|
|
if (req->src != req->dst) {
|
|
size_for_map = req->assoclen + req->cryptlen;
|
|
size_for_map += (direct == DRV_CRYPTO_DIRECTION_ENCRYPT) ? authsize : 0;
|
|
if (is_gcm4543)
|
|
size_for_map += crypto_aead_ivsize(tfm);
|
|
|
|
rc = ssi_buffer_mgr_map_scatterlist(dev, req->dst, size_for_map,
|
|
DMA_BIDIRECTIONAL,
|
|
&areq_ctx->dst.nents,
|
|
LLI_MAX_NUM_OF_DATA_ENTRIES,
|
|
&dst_last_bytes,
|
|
&dst_mapped_nents);
|
|
if (unlikely(rc != 0)) {
|
|
rc = -ENOMEM;
|
|
goto chain_data_exit;
|
|
}
|
|
}
|
|
|
|
dst_mapped_nents = ssi_buffer_mgr_get_sgl_nents(req->dst, size_for_map, &dst_last_bytes, &chained);
|
|
sg_index = areq_ctx->dst_sgl->length;
|
|
offset = size_to_skip;
|
|
|
|
//check where the data starts
|
|
while (sg_index <= size_to_skip) {
|
|
offset -= areq_ctx->dst_sgl->length;
|
|
areq_ctx->dst_sgl = sg_next(areq_ctx->dst_sgl);
|
|
//if have reached the end of the sgl, then this is unexpected
|
|
if (!areq_ctx->dst_sgl) {
|
|
SSI_LOG_ERR("reached end of sg list. unexpected\n");
|
|
BUG();
|
|
}
|
|
sg_index += areq_ctx->dst_sgl->length;
|
|
dst_mapped_nents--;
|
|
}
|
|
if (unlikely(dst_mapped_nents > LLI_MAX_NUM_OF_DATA_ENTRIES)) {
|
|
SSI_LOG_ERR("Too many fragments. current %d max %d\n",
|
|
dst_mapped_nents, LLI_MAX_NUM_OF_DATA_ENTRIES);
|
|
return -ENOMEM;
|
|
}
|
|
areq_ctx->dst.nents = dst_mapped_nents;
|
|
areq_ctx->dst_offset = offset;
|
|
if ((src_mapped_nents > 1) ||
|
|
(dst_mapped_nents > 1) ||
|
|
do_chain) {
|
|
areq_ctx->data_buff_type = SSI_DMA_BUF_MLLI;
|
|
rc = ssi_buffer_mgr_prepare_aead_data_mlli(drvdata, req,
|
|
sg_data,
|
|
&src_last_bytes,
|
|
&dst_last_bytes,
|
|
is_last_table);
|
|
} else {
|
|
areq_ctx->data_buff_type = SSI_DMA_BUF_DLLI;
|
|
ssi_buffer_mgr_prepare_aead_data_dlli(
|
|
req, &src_last_bytes, &dst_last_bytes);
|
|
}
|
|
|
|
chain_data_exit:
|
|
return rc;
|
|
}
|
|
|
|
static void ssi_buffer_mgr_update_aead_mlli_nents(struct ssi_drvdata *drvdata,
|
|
struct aead_request *req)
|
|
{
|
|
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
|
|
u32 curr_mlli_size = 0;
|
|
|
|
if (areq_ctx->assoc_buff_type == SSI_DMA_BUF_MLLI) {
|
|
areq_ctx->assoc.sram_addr = drvdata->mlli_sram_addr;
|
|
curr_mlli_size = areq_ctx->assoc.mlli_nents *
|
|
LLI_ENTRY_BYTE_SIZE;
|
|
}
|
|
|
|
if (areq_ctx->data_buff_type == SSI_DMA_BUF_MLLI) {
|
|
/*Inplace case dst nents equal to src nents*/
|
|
if (req->src == req->dst) {
|
|
areq_ctx->dst.mlli_nents = areq_ctx->src.mlli_nents;
|
|
areq_ctx->src.sram_addr = drvdata->mlli_sram_addr +
|
|
curr_mlli_size;
|
|
areq_ctx->dst.sram_addr = areq_ctx->src.sram_addr;
|
|
if (!areq_ctx->is_single_pass)
|
|
areq_ctx->assoc.mlli_nents +=
|
|
areq_ctx->src.mlli_nents;
|
|
} else {
|
|
if (areq_ctx->gen_ctx.op_type ==
|
|
DRV_CRYPTO_DIRECTION_DECRYPT) {
|
|
areq_ctx->src.sram_addr =
|
|
drvdata->mlli_sram_addr +
|
|
curr_mlli_size;
|
|
areq_ctx->dst.sram_addr =
|
|
areq_ctx->src.sram_addr +
|
|
areq_ctx->src.mlli_nents *
|
|
LLI_ENTRY_BYTE_SIZE;
|
|
if (!areq_ctx->is_single_pass)
|
|
areq_ctx->assoc.mlli_nents +=
|
|
areq_ctx->src.mlli_nents;
|
|
} else {
|
|
areq_ctx->dst.sram_addr =
|
|
drvdata->mlli_sram_addr +
|
|
curr_mlli_size;
|
|
areq_ctx->src.sram_addr =
|
|
areq_ctx->dst.sram_addr +
|
|
areq_ctx->dst.mlli_nents *
|
|
LLI_ENTRY_BYTE_SIZE;
|
|
if (!areq_ctx->is_single_pass)
|
|
areq_ctx->assoc.mlli_nents +=
|
|
areq_ctx->dst.mlli_nents;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
int ssi_buffer_mgr_map_aead_request(
|
|
struct ssi_drvdata *drvdata, struct aead_request *req)
|
|
{
|
|
struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
|
|
struct mlli_params *mlli_params = &areq_ctx->mlli_params;
|
|
struct device *dev = &drvdata->plat_dev->dev;
|
|
struct buffer_array sg_data;
|
|
unsigned int authsize = areq_ctx->req_authsize;
|
|
struct buff_mgr_handle *buff_mgr = drvdata->buff_mgr_handle;
|
|
int rc = 0;
|
|
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
|
|
bool is_gcm4543 = areq_ctx->is_gcm4543;
|
|
|
|
u32 mapped_nents = 0;
|
|
u32 dummy = 0; /*used for the assoc data fragments */
|
|
u32 size_to_map = 0;
|
|
|
|
mlli_params->curr_pool = NULL;
|
|
sg_data.num_of_buffers = 0;
|
|
|
|
if (drvdata->coherent &&
|
|
(areq_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT) &&
|
|
likely(req->src == req->dst)) {
|
|
u32 size_to_skip = req->assoclen;
|
|
|
|
if (is_gcm4543)
|
|
size_to_skip += crypto_aead_ivsize(tfm);
|
|
|
|
/* copy mac to a temporary location to deal with possible
|
|
* data memory overriding that caused by cache coherence problem.
|
|
*/
|
|
ssi_buffer_mgr_copy_scatterlist_portion(
|
|
areq_ctx->backup_mac, req->src,
|
|
size_to_skip + req->cryptlen - areq_ctx->req_authsize,
|
|
size_to_skip + req->cryptlen, SSI_SG_TO_BUF);
|
|
}
|
|
|
|
/* cacluate the size for cipher remove ICV in decrypt*/
|
|
areq_ctx->cryptlen = (areq_ctx->gen_ctx.op_type ==
|
|
DRV_CRYPTO_DIRECTION_ENCRYPT) ?
|
|
req->cryptlen :
|
|
(req->cryptlen - authsize);
|
|
|
|
areq_ctx->mac_buf_dma_addr = dma_map_single(dev, areq_ctx->mac_buf,
|
|
MAX_MAC_SIZE,
|
|
DMA_BIDIRECTIONAL);
|
|
if (unlikely(dma_mapping_error(dev, areq_ctx->mac_buf_dma_addr))) {
|
|
SSI_LOG_ERR("Mapping mac_buf %u B at va=%pK for DMA failed\n",
|
|
MAX_MAC_SIZE, areq_ctx->mac_buf);
|
|
rc = -ENOMEM;
|
|
goto aead_map_failure;
|
|
}
|
|
|
|
if (areq_ctx->ccm_hdr_size != ccm_header_size_null) {
|
|
areq_ctx->ccm_iv0_dma_addr = dma_map_single(dev,
|
|
(areq_ctx->ccm_config + CCM_CTR_COUNT_0_OFFSET),
|
|
AES_BLOCK_SIZE,
|
|
DMA_TO_DEVICE);
|
|
|
|
if (unlikely(dma_mapping_error(dev, areq_ctx->ccm_iv0_dma_addr))) {
|
|
SSI_LOG_ERR("Mapping mac_buf %u B at va=%pK "
|
|
"for DMA failed\n", AES_BLOCK_SIZE,
|
|
(areq_ctx->ccm_config + CCM_CTR_COUNT_0_OFFSET));
|
|
areq_ctx->ccm_iv0_dma_addr = 0;
|
|
rc = -ENOMEM;
|
|
goto aead_map_failure;
|
|
}
|
|
if (ssi_aead_handle_config_buf(dev, areq_ctx,
|
|
areq_ctx->ccm_config, &sg_data,
|
|
req->assoclen) != 0) {
|
|
rc = -ENOMEM;
|
|
goto aead_map_failure;
|
|
}
|
|
}
|
|
|
|
#if SSI_CC_HAS_AES_GCM
|
|
if (areq_ctx->cipher_mode == DRV_CIPHER_GCTR) {
|
|
areq_ctx->hkey_dma_addr = dma_map_single(dev,
|
|
areq_ctx->hkey,
|
|
AES_BLOCK_SIZE,
|
|
DMA_BIDIRECTIONAL);
|
|
if (unlikely(dma_mapping_error(dev, areq_ctx->hkey_dma_addr))) {
|
|
SSI_LOG_ERR("Mapping hkey %u B at va=%pK for DMA failed\n",
|
|
AES_BLOCK_SIZE, areq_ctx->hkey);
|
|
rc = -ENOMEM;
|
|
goto aead_map_failure;
|
|
}
|
|
|
|
areq_ctx->gcm_block_len_dma_addr = dma_map_single(dev,
|
|
&areq_ctx->gcm_len_block,
|
|
AES_BLOCK_SIZE,
|
|
DMA_TO_DEVICE);
|
|
if (unlikely(dma_mapping_error(dev, areq_ctx->gcm_block_len_dma_addr))) {
|
|
SSI_LOG_ERR("Mapping gcm_len_block %u B at va=%pK for DMA failed\n",
|
|
AES_BLOCK_SIZE, &areq_ctx->gcm_len_block);
|
|
rc = -ENOMEM;
|
|
goto aead_map_failure;
|
|
}
|
|
|
|
areq_ctx->gcm_iv_inc1_dma_addr = dma_map_single(dev,
|
|
areq_ctx->gcm_iv_inc1,
|
|
AES_BLOCK_SIZE,
|
|
DMA_TO_DEVICE);
|
|
|
|
if (unlikely(dma_mapping_error(dev, areq_ctx->gcm_iv_inc1_dma_addr))) {
|
|
SSI_LOG_ERR("Mapping gcm_iv_inc1 %u B at va=%pK "
|
|
"for DMA failed\n", AES_BLOCK_SIZE,
|
|
(areq_ctx->gcm_iv_inc1));
|
|
areq_ctx->gcm_iv_inc1_dma_addr = 0;
|
|
rc = -ENOMEM;
|
|
goto aead_map_failure;
|
|
}
|
|
|
|
areq_ctx->gcm_iv_inc2_dma_addr = dma_map_single(dev,
|
|
areq_ctx->gcm_iv_inc2,
|
|
AES_BLOCK_SIZE,
|
|
DMA_TO_DEVICE);
|
|
|
|
if (unlikely(dma_mapping_error(dev, areq_ctx->gcm_iv_inc2_dma_addr))) {
|
|
SSI_LOG_ERR("Mapping gcm_iv_inc2 %u B at va=%pK "
|
|
"for DMA failed\n", AES_BLOCK_SIZE,
|
|
(areq_ctx->gcm_iv_inc2));
|
|
areq_ctx->gcm_iv_inc2_dma_addr = 0;
|
|
rc = -ENOMEM;
|
|
goto aead_map_failure;
|
|
}
|
|
}
|
|
#endif /*SSI_CC_HAS_AES_GCM*/
|
|
|
|
size_to_map = req->cryptlen + req->assoclen;
|
|
if (areq_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_ENCRYPT)
|
|
size_to_map += authsize;
|
|
|
|
if (is_gcm4543)
|
|
size_to_map += crypto_aead_ivsize(tfm);
|
|
rc = ssi_buffer_mgr_map_scatterlist(dev, req->src,
|
|
size_to_map, DMA_BIDIRECTIONAL, &areq_ctx->src.nents,
|
|
LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES + LLI_MAX_NUM_OF_DATA_ENTRIES, &dummy, &mapped_nents);
|
|
if (unlikely(rc != 0)) {
|
|
rc = -ENOMEM;
|
|
goto aead_map_failure;
|
|
}
|
|
|
|
if (likely(areq_ctx->is_single_pass)) {
|
|
/*
|
|
* Create MLLI table for:
|
|
* (1) Assoc. data
|
|
* (2) Src/Dst SGLs
|
|
* Note: IV is contg. buffer (not an SGL)
|
|
*/
|
|
rc = ssi_buffer_mgr_aead_chain_assoc(drvdata, req, &sg_data, true, false);
|
|
if (unlikely(rc != 0))
|
|
goto aead_map_failure;
|
|
rc = ssi_buffer_mgr_aead_chain_iv(drvdata, req, &sg_data, true, false);
|
|
if (unlikely(rc != 0))
|
|
goto aead_map_failure;
|
|
rc = ssi_buffer_mgr_aead_chain_data(drvdata, req, &sg_data, true, false);
|
|
if (unlikely(rc != 0))
|
|
goto aead_map_failure;
|
|
} else { /* DOUBLE-PASS flow */
|
|
/*
|
|
* Prepare MLLI table(s) in this order:
|
|
*
|
|
* If ENCRYPT/DECRYPT (inplace):
|
|
* (1) MLLI table for assoc
|
|
* (2) IV entry (chained right after end of assoc)
|
|
* (3) MLLI for src/dst (inplace operation)
|
|
*
|
|
* If ENCRYPT (non-inplace)
|
|
* (1) MLLI table for assoc
|
|
* (2) IV entry (chained right after end of assoc)
|
|
* (3) MLLI for dst
|
|
* (4) MLLI for src
|
|
*
|
|
* If DECRYPT (non-inplace)
|
|
* (1) MLLI table for assoc
|
|
* (2) IV entry (chained right after end of assoc)
|
|
* (3) MLLI for src
|
|
* (4) MLLI for dst
|
|
*/
|
|
rc = ssi_buffer_mgr_aead_chain_assoc(drvdata, req, &sg_data, false, true);
|
|
if (unlikely(rc != 0))
|
|
goto aead_map_failure;
|
|
rc = ssi_buffer_mgr_aead_chain_iv(drvdata, req, &sg_data, false, true);
|
|
if (unlikely(rc != 0))
|
|
goto aead_map_failure;
|
|
rc = ssi_buffer_mgr_aead_chain_data(drvdata, req, &sg_data, true, true);
|
|
if (unlikely(rc != 0))
|
|
goto aead_map_failure;
|
|
}
|
|
|
|
/* Mlli support -start building the MLLI according to the above results */
|
|
if (unlikely(
|
|
(areq_ctx->assoc_buff_type == SSI_DMA_BUF_MLLI) ||
|
|
(areq_ctx->data_buff_type == SSI_DMA_BUF_MLLI))) {
|
|
mlli_params->curr_pool = buff_mgr->mlli_buffs_pool;
|
|
rc = ssi_buffer_mgr_generate_mlli(dev, &sg_data, mlli_params);
|
|
if (unlikely(rc != 0))
|
|
goto aead_map_failure;
|
|
|
|
ssi_buffer_mgr_update_aead_mlli_nents(drvdata, req);
|
|
SSI_LOG_DEBUG("assoc params mn %d\n", areq_ctx->assoc.mlli_nents);
|
|
SSI_LOG_DEBUG("src params mn %d\n", areq_ctx->src.mlli_nents);
|
|
SSI_LOG_DEBUG("dst params mn %d\n", areq_ctx->dst.mlli_nents);
|
|
}
|
|
return 0;
|
|
|
|
aead_map_failure:
|
|
ssi_buffer_mgr_unmap_aead_request(dev, req);
|
|
return rc;
|
|
}
|
|
|
|
int ssi_buffer_mgr_map_hash_request_final(
|
|
struct ssi_drvdata *drvdata, void *ctx, struct scatterlist *src, unsigned int nbytes, bool do_update)
|
|
{
|
|
struct ahash_req_ctx *areq_ctx = (struct ahash_req_ctx *)ctx;
|
|
struct device *dev = &drvdata->plat_dev->dev;
|
|
u8 *curr_buff = areq_ctx->buff_index ? areq_ctx->buff1 :
|
|
areq_ctx->buff0;
|
|
u32 *curr_buff_cnt = areq_ctx->buff_index ? &areq_ctx->buff1_cnt :
|
|
&areq_ctx->buff0_cnt;
|
|
struct mlli_params *mlli_params = &areq_ctx->mlli_params;
|
|
struct buffer_array sg_data;
|
|
struct buff_mgr_handle *buff_mgr = drvdata->buff_mgr_handle;
|
|
u32 dummy = 0;
|
|
u32 mapped_nents = 0;
|
|
|
|
SSI_LOG_DEBUG(" final params : curr_buff=%pK "
|
|
"curr_buff_cnt=0x%X nbytes = 0x%X "
|
|
"src=%pK curr_index=%u\n",
|
|
curr_buff, *curr_buff_cnt, nbytes,
|
|
src, areq_ctx->buff_index);
|
|
/* Init the type of the dma buffer */
|
|
areq_ctx->data_dma_buf_type = SSI_DMA_BUF_NULL;
|
|
mlli_params->curr_pool = NULL;
|
|
sg_data.num_of_buffers = 0;
|
|
areq_ctx->in_nents = 0;
|
|
|
|
if (unlikely(nbytes == 0 && *curr_buff_cnt == 0)) {
|
|
/* nothing to do */
|
|
return 0;
|
|
}
|
|
|
|
/*TODO: copy data in case that buffer is enough for operation */
|
|
/* map the previous buffer */
|
|
if (*curr_buff_cnt != 0) {
|
|
if (ssi_ahash_handle_curr_buf(dev, areq_ctx, curr_buff,
|
|
*curr_buff_cnt, &sg_data) != 0) {
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
|
|
if (src && (nbytes > 0) && do_update) {
|
|
if (unlikely(ssi_buffer_mgr_map_scatterlist(dev, src, nbytes,
|
|
DMA_TO_DEVICE,
|
|
&areq_ctx->in_nents,
|
|
LLI_MAX_NUM_OF_DATA_ENTRIES,
|
|
&dummy,
|
|
&mapped_nents))){
|
|
goto unmap_curr_buff;
|
|
}
|
|
if (src && (mapped_nents == 1)
|
|
&& (areq_ctx->data_dma_buf_type == SSI_DMA_BUF_NULL)) {
|
|
memcpy(areq_ctx->buff_sg, src,
|
|
sizeof(struct scatterlist));
|
|
areq_ctx->buff_sg->length = nbytes;
|
|
areq_ctx->curr_sg = areq_ctx->buff_sg;
|
|
areq_ctx->data_dma_buf_type = SSI_DMA_BUF_DLLI;
|
|
} else {
|
|
areq_ctx->data_dma_buf_type = SSI_DMA_BUF_MLLI;
|
|
}
|
|
}
|
|
|
|
/*build mlli */
|
|
if (unlikely(areq_ctx->data_dma_buf_type == SSI_DMA_BUF_MLLI)) {
|
|
mlli_params->curr_pool = buff_mgr->mlli_buffs_pool;
|
|
/* add the src data to the sg_data */
|
|
ssi_buffer_mgr_add_scatterlist_entry(&sg_data,
|
|
areq_ctx->in_nents,
|
|
src, nbytes, 0, true,
|
|
&areq_ctx->mlli_nents);
|
|
if (unlikely(ssi_buffer_mgr_generate_mlli(dev, &sg_data,
|
|
mlli_params) != 0)) {
|
|
goto fail_unmap_din;
|
|
}
|
|
}
|
|
/* change the buffer index for the unmap function */
|
|
areq_ctx->buff_index = (areq_ctx->buff_index ^ 1);
|
|
SSI_LOG_DEBUG("areq_ctx->data_dma_buf_type = %s\n",
|
|
GET_DMA_BUFFER_TYPE(areq_ctx->data_dma_buf_type));
|
|
return 0;
|
|
|
|
fail_unmap_din:
|
|
dma_unmap_sg(dev, src, areq_ctx->in_nents, DMA_TO_DEVICE);
|
|
|
|
unmap_curr_buff:
|
|
if (*curr_buff_cnt != 0)
|
|
dma_unmap_sg(dev, areq_ctx->buff_sg, 1, DMA_TO_DEVICE);
|
|
|
|
return -ENOMEM;
|
|
}
|
|
|
|
int ssi_buffer_mgr_map_hash_request_update(
|
|
struct ssi_drvdata *drvdata, void *ctx, struct scatterlist *src, unsigned int nbytes, unsigned int block_size)
|
|
{
|
|
struct ahash_req_ctx *areq_ctx = (struct ahash_req_ctx *)ctx;
|
|
struct device *dev = &drvdata->plat_dev->dev;
|
|
u8 *curr_buff = areq_ctx->buff_index ? areq_ctx->buff1 :
|
|
areq_ctx->buff0;
|
|
u32 *curr_buff_cnt = areq_ctx->buff_index ? &areq_ctx->buff1_cnt :
|
|
&areq_ctx->buff0_cnt;
|
|
u8 *next_buff = areq_ctx->buff_index ? areq_ctx->buff0 :
|
|
areq_ctx->buff1;
|
|
u32 *next_buff_cnt = areq_ctx->buff_index ? &areq_ctx->buff0_cnt :
|
|
&areq_ctx->buff1_cnt;
|
|
struct mlli_params *mlli_params = &areq_ctx->mlli_params;
|
|
unsigned int update_data_len;
|
|
u32 total_in_len = nbytes + *curr_buff_cnt;
|
|
struct buffer_array sg_data;
|
|
struct buff_mgr_handle *buff_mgr = drvdata->buff_mgr_handle;
|
|
unsigned int swap_index = 0;
|
|
u32 dummy = 0;
|
|
u32 mapped_nents = 0;
|
|
|
|
SSI_LOG_DEBUG(" update params : curr_buff=%pK "
|
|
"curr_buff_cnt=0x%X nbytes=0x%X "
|
|
"src=%pK curr_index=%u\n",
|
|
curr_buff, *curr_buff_cnt, nbytes,
|
|
src, areq_ctx->buff_index);
|
|
/* Init the type of the dma buffer */
|
|
areq_ctx->data_dma_buf_type = SSI_DMA_BUF_NULL;
|
|
mlli_params->curr_pool = NULL;
|
|
areq_ctx->curr_sg = NULL;
|
|
sg_data.num_of_buffers = 0;
|
|
areq_ctx->in_nents = 0;
|
|
|
|
if (unlikely(total_in_len < block_size)) {
|
|
SSI_LOG_DEBUG(" less than one block: curr_buff=%pK "
|
|
"*curr_buff_cnt=0x%X copy_to=%pK\n",
|
|
curr_buff, *curr_buff_cnt,
|
|
&curr_buff[*curr_buff_cnt]);
|
|
areq_ctx->in_nents =
|
|
ssi_buffer_mgr_get_sgl_nents(src,
|
|
nbytes,
|
|
&dummy, NULL);
|
|
sg_copy_to_buffer(src, areq_ctx->in_nents,
|
|
&curr_buff[*curr_buff_cnt], nbytes);
|
|
*curr_buff_cnt += nbytes;
|
|
return 1;
|
|
}
|
|
|
|
/* Calculate the residue size*/
|
|
*next_buff_cnt = total_in_len & (block_size - 1);
|
|
/* update data len */
|
|
update_data_len = total_in_len - *next_buff_cnt;
|
|
|
|
SSI_LOG_DEBUG(" temp length : *next_buff_cnt=0x%X "
|
|
"update_data_len=0x%X\n",
|
|
*next_buff_cnt, update_data_len);
|
|
|
|
/* Copy the new residue to next buffer */
|
|
if (*next_buff_cnt != 0) {
|
|
SSI_LOG_DEBUG(" handle residue: next buff %pK skip data %u"
|
|
" residue %u\n", next_buff,
|
|
(update_data_len - *curr_buff_cnt),
|
|
*next_buff_cnt);
|
|
ssi_buffer_mgr_copy_scatterlist_portion(next_buff, src,
|
|
(update_data_len - *curr_buff_cnt),
|
|
nbytes, SSI_SG_TO_BUF);
|
|
/* change the buffer index for next operation */
|
|
swap_index = 1;
|
|
}
|
|
|
|
if (*curr_buff_cnt != 0) {
|
|
if (ssi_ahash_handle_curr_buf(dev, areq_ctx, curr_buff,
|
|
*curr_buff_cnt, &sg_data) != 0) {
|
|
return -ENOMEM;
|
|
}
|
|
/* change the buffer index for next operation */
|
|
swap_index = 1;
|
|
}
|
|
|
|
if (update_data_len > *curr_buff_cnt) {
|
|
if (unlikely(ssi_buffer_mgr_map_scatterlist(dev, src,
|
|
(update_data_len - *curr_buff_cnt),
|
|
DMA_TO_DEVICE,
|
|
&areq_ctx->in_nents,
|
|
LLI_MAX_NUM_OF_DATA_ENTRIES,
|
|
&dummy,
|
|
&mapped_nents))){
|
|
goto unmap_curr_buff;
|
|
}
|
|
if ((mapped_nents == 1)
|
|
&& (areq_ctx->data_dma_buf_type == SSI_DMA_BUF_NULL)) {
|
|
/* only one entry in the SG and no previous data */
|
|
memcpy(areq_ctx->buff_sg, src,
|
|
sizeof(struct scatterlist));
|
|
areq_ctx->buff_sg->length = update_data_len;
|
|
areq_ctx->data_dma_buf_type = SSI_DMA_BUF_DLLI;
|
|
areq_ctx->curr_sg = areq_ctx->buff_sg;
|
|
} else {
|
|
areq_ctx->data_dma_buf_type = SSI_DMA_BUF_MLLI;
|
|
}
|
|
}
|
|
|
|
if (unlikely(areq_ctx->data_dma_buf_type == SSI_DMA_BUF_MLLI)) {
|
|
mlli_params->curr_pool = buff_mgr->mlli_buffs_pool;
|
|
/* add the src data to the sg_data */
|
|
ssi_buffer_mgr_add_scatterlist_entry(&sg_data,
|
|
areq_ctx->in_nents,
|
|
src,
|
|
(update_data_len - *curr_buff_cnt),
|
|
0,
|
|
true,
|
|
&areq_ctx->mlli_nents);
|
|
if (unlikely(ssi_buffer_mgr_generate_mlli(dev, &sg_data,
|
|
mlli_params) != 0)) {
|
|
goto fail_unmap_din;
|
|
}
|
|
}
|
|
areq_ctx->buff_index = (areq_ctx->buff_index ^ swap_index);
|
|
|
|
return 0;
|
|
|
|
fail_unmap_din:
|
|
dma_unmap_sg(dev, src, areq_ctx->in_nents, DMA_TO_DEVICE);
|
|
|
|
unmap_curr_buff:
|
|
if (*curr_buff_cnt != 0)
|
|
dma_unmap_sg(dev, areq_ctx->buff_sg, 1, DMA_TO_DEVICE);
|
|
|
|
return -ENOMEM;
|
|
}
|
|
|
|
void ssi_buffer_mgr_unmap_hash_request(
|
|
struct device *dev, void *ctx, struct scatterlist *src, bool do_revert)
|
|
{
|
|
struct ahash_req_ctx *areq_ctx = (struct ahash_req_ctx *)ctx;
|
|
u32 *prev_len = areq_ctx->buff_index ? &areq_ctx->buff0_cnt :
|
|
&areq_ctx->buff1_cnt;
|
|
|
|
/*In case a pool was set, a table was
|
|
*allocated and should be released
|
|
*/
|
|
if (areq_ctx->mlli_params.curr_pool) {
|
|
SSI_LOG_DEBUG("free MLLI buffer: dma=%pad virt=%pK\n",
|
|
areq_ctx->mlli_params.mlli_dma_addr,
|
|
areq_ctx->mlli_params.mlli_virt_addr);
|
|
dma_pool_free(areq_ctx->mlli_params.curr_pool,
|
|
areq_ctx->mlli_params.mlli_virt_addr,
|
|
areq_ctx->mlli_params.mlli_dma_addr);
|
|
}
|
|
|
|
if ((src) && likely(areq_ctx->in_nents != 0)) {
|
|
SSI_LOG_DEBUG("Unmapped sg src: virt=%pK dma=%pad len=0x%X\n",
|
|
sg_virt(src),
|
|
sg_dma_address(src),
|
|
sg_dma_len(src));
|
|
dma_unmap_sg(dev, src,
|
|
areq_ctx->in_nents, DMA_TO_DEVICE);
|
|
}
|
|
|
|
if (*prev_len != 0) {
|
|
SSI_LOG_DEBUG("Unmapped buffer: areq_ctx->buff_sg=%pK"
|
|
" dma=%pad len 0x%X\n",
|
|
sg_virt(areq_ctx->buff_sg),
|
|
sg_dma_address(areq_ctx->buff_sg),
|
|
sg_dma_len(areq_ctx->buff_sg));
|
|
dma_unmap_sg(dev, areq_ctx->buff_sg, 1, DMA_TO_DEVICE);
|
|
if (!do_revert) {
|
|
/* clean the previous data length for update operation */
|
|
*prev_len = 0;
|
|
} else {
|
|
areq_ctx->buff_index ^= 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
int ssi_buffer_mgr_init(struct ssi_drvdata *drvdata)
|
|
{
|
|
struct buff_mgr_handle *buff_mgr_handle;
|
|
struct device *dev = &drvdata->plat_dev->dev;
|
|
|
|
buff_mgr_handle = kmalloc(sizeof(*buff_mgr_handle), GFP_KERNEL);
|
|
if (!buff_mgr_handle)
|
|
return -ENOMEM;
|
|
|
|
drvdata->buff_mgr_handle = buff_mgr_handle;
|
|
|
|
buff_mgr_handle->mlli_buffs_pool = dma_pool_create(
|
|
"dx_single_mlli_tables", dev,
|
|
MAX_NUM_OF_TOTAL_MLLI_ENTRIES *
|
|
LLI_ENTRY_BYTE_SIZE,
|
|
MLLI_TABLE_MIN_ALIGNMENT, 0);
|
|
|
|
if (unlikely(!buff_mgr_handle->mlli_buffs_pool))
|
|
goto error;
|
|
|
|
return 0;
|
|
|
|
error:
|
|
ssi_buffer_mgr_fini(drvdata);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
int ssi_buffer_mgr_fini(struct ssi_drvdata *drvdata)
|
|
{
|
|
struct buff_mgr_handle *buff_mgr_handle = drvdata->buff_mgr_handle;
|
|
|
|
if (buff_mgr_handle) {
|
|
dma_pool_destroy(buff_mgr_handle->mlli_buffs_pool);
|
|
kfree(drvdata->buff_mgr_handle);
|
|
drvdata->buff_mgr_handle = NULL;
|
|
}
|
|
return 0;
|
|
}
|