Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) 2012-2019 ARM Limited (or its affiliates). */
 
#include <crypto/internal/aead.h>
#include <crypto/authenc.h>
#include <crypto/scatterwalk.h>
#include <linux/dmapool.h>
#include <linux/dma-mapping.h>
 
#include "cc_buffer_mgr.h"
#include "cc_lli_defs.h"
#include "cc_cipher.h"
#include "cc_hash.h"
#include "cc_aead.h"
 
union buffer_array_entry {
<------>struct scatterlist *sgl;
<------>dma_addr_t buffer_dma;
};
 
struct buffer_array {
<------>unsigned int num_of_buffers;
<------>union buffer_array_entry entry[MAX_NUM_OF_BUFFERS_IN_MLLI];
<------>unsigned int offset[MAX_NUM_OF_BUFFERS_IN_MLLI];
<------>int nents[MAX_NUM_OF_BUFFERS_IN_MLLI];
<------>int total_data_len[MAX_NUM_OF_BUFFERS_IN_MLLI];
<------>bool is_last[MAX_NUM_OF_BUFFERS_IN_MLLI];
<------>u32 *mlli_nents[MAX_NUM_OF_BUFFERS_IN_MLLI];
};
 
static inline char *cc_dma_buf_type(enum cc_req_dma_buf_type type)
{
<------>switch (type) {
<------>case CC_DMA_BUF_NULL:
<------><------>return "BUF_NULL";
<------>case CC_DMA_BUF_DLLI:
<------><------>return "BUF_DLLI";
<------>case CC_DMA_BUF_MLLI:
<------><------>return "BUF_MLLI";
<------>default:
<------><------>return "BUF_INVALID";
<------>}
}
 
/**
 * cc_copy_mac() - Copy MAC to temporary location
 *
 * @dev: device object
 * @req: aead request object
 * @dir: [IN] copy from/to sgl
 */
static void cc_copy_mac(struct device *dev, struct aead_request *req,
<------><------><------>enum cc_sg_cpy_direct dir)
{
<------>struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
<------>u32 skip = req->assoclen + req->cryptlen;
 
<------>cc_copy_sg_portion(dev, areq_ctx->backup_mac, req->src,
<------><------><------>   (skip - areq_ctx->req_authsize), skip, dir);
}
 
/**
 * cc_get_sgl_nents() - Get scatterlist number of entries.
 *
 * @dev: Device object
 * @sg_list: SG list
 * @nbytes: [IN] Total SGL data bytes.
 * @lbytes: [OUT] Returns the amount of bytes at the last entry
 *
 * Return:
 * Number of entries in the scatterlist
 */
static unsigned int cc_get_sgl_nents(struct device *dev,
<------><------><------><------>     struct scatterlist *sg_list,
<------><------><------><------>     unsigned int nbytes, u32 *lbytes)
{
<------>unsigned int nents = 0;
 
<------>*lbytes = 0;
 
<------>while (nbytes && sg_list) {
<------><------>nents++;
<------><------>/* get the number of bytes in the last entry */
<------><------>*lbytes = nbytes;
<------><------>nbytes -= (sg_list->length > nbytes) ?
<------><------><------><------>nbytes : sg_list->length;
<------><------>sg_list = sg_next(sg_list);
<------>}
 
<------>dev_dbg(dev, "nents %d last bytes %d\n", nents, *lbytes);
<------>return nents;
}
 
/**
 * cc_copy_sg_portion() - Copy scatter list data,
 * from to_skip to end, to dest and vice versa
 *
 * @dev: Device object
 * @dest: Buffer to copy to/from
 * @sg: SG list
 * @to_skip: Number of bytes to skip before copying
 * @end: Offset of last byte to copy
 * @direct: Transfer direction (true == from SG list to buffer, false == from
 *          buffer to SG list)
 */
void cc_copy_sg_portion(struct device *dev, u8 *dest, struct scatterlist *sg,
<------><------><------>u32 to_skip, u32 end, enum cc_sg_cpy_direct direct)
{
<------>u32 nents;
 
<------>nents = sg_nents_for_len(sg, end);
<------>sg_copy_buffer(sg, nents, dest, (end - to_skip + 1), to_skip,
<------><------>       (direct == CC_SG_TO_BUF));
}
 
static int cc_render_buff_to_mlli(struct device *dev, dma_addr_t buff_dma,
<------><------><------><------>  u32 buff_size, u32 *curr_nents,
<------><------><------><------>  u32 **mlli_entry_pp)
{
<------>u32 *mlli_entry_p = *mlli_entry_pp;
<------>u32 new_nents;
 
<------>/* Verify there is no memory overflow*/
<------>new_nents = (*curr_nents + buff_size / CC_MAX_MLLI_ENTRY_SIZE + 1);
<------>if (new_nents > MAX_NUM_OF_TOTAL_MLLI_ENTRIES) {
<------><------>dev_err(dev, "Too many mlli entries. current %d max %d\n",
<------><------><------>new_nents, MAX_NUM_OF_TOTAL_MLLI_ENTRIES);
<------><------>return -ENOMEM;
<------>}
 
<------>/*handle buffer longer than 64 kbytes */
<------>while (buff_size > CC_MAX_MLLI_ENTRY_SIZE) {
<------><------>cc_lli_set_addr(mlli_entry_p, buff_dma);
<------><------>cc_lli_set_size(mlli_entry_p, CC_MAX_MLLI_ENTRY_SIZE);
<------><------>dev_dbg(dev, "entry[%d]: single_buff=0x%08X size=%08X\n",
<------><------><------>*curr_nents, mlli_entry_p[LLI_WORD0_OFFSET],
<------><------><------>mlli_entry_p[LLI_WORD1_OFFSET]);
<------><------>buff_dma += CC_MAX_MLLI_ENTRY_SIZE;
<------><------>buff_size -= CC_MAX_MLLI_ENTRY_SIZE;
<------><------>mlli_entry_p = mlli_entry_p + 2;
<------><------>(*curr_nents)++;
<------>}
<------>/*Last entry */
<------>cc_lli_set_addr(mlli_entry_p, buff_dma);
<------>cc_lli_set_size(mlli_entry_p, buff_size);
<------>dev_dbg(dev, "entry[%d]: single_buff=0x%08X size=%08X\n",
<------><------>*curr_nents, mlli_entry_p[LLI_WORD0_OFFSET],
<------><------>mlli_entry_p[LLI_WORD1_OFFSET]);
<------>mlli_entry_p = mlli_entry_p + 2;
<------>*mlli_entry_pp = mlli_entry_p;
<------>(*curr_nents)++;
<------>return 0;
}
 
static int cc_render_sg_to_mlli(struct device *dev, struct scatterlist *sgl,
<------><------><------><------>u32 sgl_data_len, u32 sgl_offset,
<------><------><------><------>u32 *curr_nents, u32 **mlli_entry_pp)
{
<------>struct scatterlist *curr_sgl = sgl;
<------>u32 *mlli_entry_p = *mlli_entry_pp;
<------>s32 rc = 0;
 
<------>for ( ; (curr_sgl && sgl_data_len);
<------>      curr_sgl = sg_next(curr_sgl)) {
<------><------>u32 entry_data_len =
<------><------><------>(sgl_data_len > sg_dma_len(curr_sgl) - sgl_offset) ?
<------><------><------><------>sg_dma_len(curr_sgl) - sgl_offset :
<------><------><------><------>sgl_data_len;
<------><------>sgl_data_len -= entry_data_len;
<------><------>rc = cc_render_buff_to_mlli(dev, sg_dma_address(curr_sgl) +
<------><------><------><------><------>    sgl_offset, entry_data_len,
<------><------><------><------><------>    curr_nents, &mlli_entry_p);
<------><------>if (rc)
<------><------><------>return rc;
 
<------><------>sgl_offset = 0;
<------>}
<------>*mlli_entry_pp = mlli_entry_p;
<------>return 0;
}
 
static int cc_generate_mlli(struct device *dev, struct buffer_array *sg_data,
<------><------><------>    struct mlli_params *mlli_params, gfp_t flags)
{
<------>u32 *mlli_p;
<------>u32 total_nents = 0, prev_total_nents = 0;
<------>int rc = 0, i;
 
<------>dev_dbg(dev, "NUM of SG's = %d\n", sg_data->num_of_buffers);
 
<------>/* Allocate memory from the pointed pool */
<------>mlli_params->mlli_virt_addr =
<------><------>dma_pool_alloc(mlli_params->curr_pool, flags,
<------><------><------>       &mlli_params->mlli_dma_addr);
<------>if (!mlli_params->mlli_virt_addr) {
<------><------>dev_err(dev, "dma_pool_alloc() failed\n");
<------><------>rc = -ENOMEM;
<------><------>goto build_mlli_exit;
<------>}
<------>/* Point to start of MLLI */
<------>mlli_p = mlli_params->mlli_virt_addr;
<------>/* go over all SG's and link it to one MLLI table */
<------>for (i = 0; i < sg_data->num_of_buffers; i++) {
<------><------>union buffer_array_entry *entry = &sg_data->entry[i];
<------><------>u32 tot_len = sg_data->total_data_len[i];
<------><------>u32 offset = sg_data->offset[i];
 
<------><------>rc = cc_render_sg_to_mlli(dev, entry->sgl, tot_len, offset,
<------><------><------><------><------>  &total_nents, &mlli_p);
<------><------>if (rc)
<------><------><------>return rc;
 
<------><------>/* set last bit in the current table */
<------><------>if (sg_data->mlli_nents[i]) {
<------><------><------>/*Calculate the current MLLI table length for the
<------><------><------> *length field in the descriptor
<------><------><------> */
<------><------><------>*sg_data->mlli_nents[i] +=
<------><------><------><------>(total_nents - prev_total_nents);
<------><------><------>prev_total_nents = total_nents;
<------><------>}
<------>}
 
<------>/* Set MLLI size for the bypass operation */
<------>mlli_params->mlli_len = (total_nents * LLI_ENTRY_BYTE_SIZE);
 
<------>dev_dbg(dev, "MLLI params: virt_addr=%pK dma_addr=%pad mlli_len=0x%X\n",
<------><------>mlli_params->mlli_virt_addr, &mlli_params->mlli_dma_addr,
<------><------>mlli_params->mlli_len);
 
build_mlli_exit:
<------>return rc;
}
 
static void cc_add_sg_entry(struct device *dev, struct buffer_array *sgl_data,
<------><------><------>    unsigned int nents, struct scatterlist *sgl,
<------><------><------>    unsigned int data_len, unsigned int data_offset,
<------><------><------>    bool is_last_table, u32 *mlli_nents)
{
<------>unsigned int index = sgl_data->num_of_buffers;
 
<------>dev_dbg(dev, "index=%u nents=%u sgl=%pK data_len=0x%08X is_last=%d\n",
<------><------>index, nents, sgl, data_len, is_last_table);
<------>sgl_data->nents[index] = nents;
<------>sgl_data->entry[index].sgl = sgl;
<------>sgl_data->offset[index] = data_offset;
<------>sgl_data->total_data_len[index] = data_len;
<------>sgl_data->is_last[index] = is_last_table;
<------>sgl_data->mlli_nents[index] = mlli_nents;
<------>if (sgl_data->mlli_nents[index])
<------><------>*sgl_data->mlli_nents[index] = 0;
<------>sgl_data->num_of_buffers++;
}
 
static int cc_map_sg(struct device *dev, struct scatterlist *sg,
<------><------>     unsigned int nbytes, int direction, u32 *nents,
<------><------>     u32 max_sg_nents, u32 *lbytes, u32 *mapped_nents)
{
<------>int ret = 0;
 
<------>if (!nbytes) {
<------><------>*mapped_nents = 0;
<------><------>*lbytes = 0;
<------><------>*nents = 0;
<------><------>return 0;
<------>}
 
<------>*nents = cc_get_sgl_nents(dev, sg, nbytes, lbytes);
<------>if (*nents > max_sg_nents) {
<------><------>*nents = 0;
<------><------>dev_err(dev, "Too many fragments. current %d max %d\n",
<------><------><------>*nents, max_sg_nents);
<------><------>return -ENOMEM;
<------>}
 
<------>ret = dma_map_sg(dev, sg, *nents, direction);
<------>if (dma_mapping_error(dev, ret)) {
<------><------>*nents = 0;
<------><------>dev_err(dev, "dma_map_sg() sg buffer failed %d\n", ret);
<------><------>return -ENOMEM;
<------>}
 
<------>*mapped_nents = ret;
 
<------>return 0;
}
 
static int
cc_set_aead_conf_buf(struct device *dev, struct aead_req_ctx *areq_ctx,
<------><------>     u8 *config_data, struct buffer_array *sg_data,
<------><------>     unsigned int assoclen)
{
<------>dev_dbg(dev, " handle additional data config set to DLLI\n");
<------>/* create sg for the current buffer */
<------>sg_init_one(&areq_ctx->ccm_adata_sg, config_data,
<------><------>    AES_BLOCK_SIZE + areq_ctx->ccm_hdr_size);
<------>if (dma_map_sg(dev, &areq_ctx->ccm_adata_sg, 1, DMA_TO_DEVICE) != 1) {
<------><------>dev_err(dev, "dma_map_sg() config buffer failed\n");
<------><------>return -ENOMEM;
<------>}
<------>dev_dbg(dev, "Mapped curr_buff: dma_address=%pad page=%p addr=%pK offset=%u length=%u\n",
<------><------>&sg_dma_address(&areq_ctx->ccm_adata_sg),
<------><------>sg_page(&areq_ctx->ccm_adata_sg),
<------><------>sg_virt(&areq_ctx->ccm_adata_sg),
<------><------>areq_ctx->ccm_adata_sg.offset, areq_ctx->ccm_adata_sg.length);
<------>/* prepare for case of MLLI */
<------>if (assoclen > 0) {
<------><------>cc_add_sg_entry(dev, sg_data, 1, &areq_ctx->ccm_adata_sg,
<------><------><------><------>(AES_BLOCK_SIZE + areq_ctx->ccm_hdr_size),
<------><------><------><------>0, false, NULL);
<------>}
<------>return 0;
}
 
static int cc_set_hash_buf(struct device *dev, struct ahash_req_ctx *areq_ctx,
<------><------><------>   u8 *curr_buff, u32 curr_buff_cnt,
<------><------><------>   struct buffer_array *sg_data)
{
<------>dev_dbg(dev, " handle curr buff %x set to   DLLI\n", curr_buff_cnt);
<------>/* create sg for the current buffer */
<------>sg_init_one(areq_ctx->buff_sg, curr_buff, curr_buff_cnt);
<------>if (dma_map_sg(dev, areq_ctx->buff_sg, 1, DMA_TO_DEVICE) != 1) {
<------><------>dev_err(dev, "dma_map_sg() src buffer failed\n");
<------><------>return -ENOMEM;
<------>}
<------>dev_dbg(dev, "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 = CC_DMA_BUF_DLLI;
<------>areq_ctx->curr_sg = areq_ctx->buff_sg;
<------>areq_ctx->in_nents = 0;
<------>/* prepare for case of MLLI */
<------>cc_add_sg_entry(dev, sg_data, 1, areq_ctx->buff_sg, curr_buff_cnt, 0,
<------><------><------>false, NULL);
<------>return 0;
}
 
void cc_unmap_cipher_request(struct device *dev, void *ctx,
<------><------><------><------>unsigned int ivsize, struct scatterlist *src,
<------><------><------><------>struct scatterlist *dst)
{
<------>struct cipher_req_ctx *req_ctx = (struct cipher_req_ctx *)ctx;
 
<------>if (req_ctx->gen_ctx.iv_dma_addr) {
<------><------>dev_dbg(dev, "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, DMA_BIDIRECTIONAL);
<------>}
<------>/* Release pool */
<------>if (req_ctx->dma_buf_type == CC_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);
<------>dev_dbg(dev, "Unmapped req->src=%pK\n", sg_virt(src));
 
<------>if (src != dst) {
<------><------>dma_unmap_sg(dev, dst, req_ctx->out_nents, DMA_BIDIRECTIONAL);
<------><------>dev_dbg(dev, "Unmapped req->dst=%pK\n", sg_virt(dst));
<------>}
}
 
int cc_map_cipher_request(struct cc_drvdata *drvdata, void *ctx,
<------><------><------>  unsigned int ivsize, unsigned int nbytes,
<------><------><------>  void *info, struct scatterlist *src,
<------><------><------>  struct scatterlist *dst, gfp_t flags)
{
<------>struct cipher_req_ctx *req_ctx = (struct cipher_req_ctx *)ctx;
<------>struct mlli_params *mlli_params = &req_ctx->mlli_params;
<------>struct device *dev = drvdata_to_dev(drvdata);
<------>struct buffer_array sg_data;
<------>u32 dummy = 0;
<------>int rc = 0;
<------>u32 mapped_nents = 0;
 
<------>req_ctx->dma_buf_type = CC_DMA_BUF_DLLI;
<------>mlli_params->curr_pool = NULL;
<------>sg_data.num_of_buffers = 0;
 
<------>/* Map IV buffer */
<------>if (ivsize) {
<------><------>dump_byte_array("iv", info, ivsize);
<------><------>req_ctx->gen_ctx.iv_dma_addr =
<------><------><------>dma_map_single(dev, info, ivsize, DMA_BIDIRECTIONAL);
<------><------>if (dma_mapping_error(dev, req_ctx->gen_ctx.iv_dma_addr)) {
<------><------><------>dev_err(dev, "Mapping iv %u B at va=%pK for DMA failed\n",
<------><------><------><------>ivsize, info);
<------><------><------>return -ENOMEM;
<------><------>}
<------><------>dev_dbg(dev, "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 = cc_map_sg(dev, src, nbytes, DMA_BIDIRECTIONAL, &req_ctx->in_nents,
<------><------>       LLI_MAX_NUM_OF_DATA_ENTRIES, &dummy, &mapped_nents);
<------>if (rc)
<------><------>goto cipher_exit;
<------>if (mapped_nents > 1)
<------><------>req_ctx->dma_buf_type = CC_DMA_BUF_MLLI;
 
<------>if (src == dst) {
<------><------>/* Handle inplace operation */
<------><------>if (req_ctx->dma_buf_type == CC_DMA_BUF_MLLI) {
<------><------><------>req_ctx->out_nents = 0;
<------><------><------>cc_add_sg_entry(dev, &sg_data, req_ctx->in_nents, src,
<------><------><------><------><------>nbytes, 0, true,
<------><------><------><------><------>&req_ctx->in_mlli_nents);
<------><------>}
<------>} else {
<------><------>/* Map the dst sg */
<------><------>rc = cc_map_sg(dev, dst, nbytes, DMA_BIDIRECTIONAL,
<------><------><------>       &req_ctx->out_nents, LLI_MAX_NUM_OF_DATA_ENTRIES,
<------><------><------>       &dummy, &mapped_nents);
<------><------>if (rc)
<------><------><------>goto cipher_exit;
<------><------>if (mapped_nents > 1)
<------><------><------>req_ctx->dma_buf_type = CC_DMA_BUF_MLLI;
 
<------><------>if (req_ctx->dma_buf_type == CC_DMA_BUF_MLLI) {
<------><------><------>cc_add_sg_entry(dev, &sg_data, req_ctx->in_nents, src,
<------><------><------><------><------>nbytes, 0, true,
<------><------><------><------><------>&req_ctx->in_mlli_nents);
<------><------><------>cc_add_sg_entry(dev, &sg_data, req_ctx->out_nents, dst,
<------><------><------><------><------>nbytes, 0, true,
<------><------><------><------><------>&req_ctx->out_mlli_nents);
<------><------>}
<------>}
 
<------>if (req_ctx->dma_buf_type == CC_DMA_BUF_MLLI) {
<------><------>mlli_params->curr_pool = drvdata->mlli_buffs_pool;
<------><------>rc = cc_generate_mlli(dev, &sg_data, mlli_params, flags);
<------><------>if (rc)
<------><------><------>goto cipher_exit;
<------>}
 
<------>dev_dbg(dev, "areq_ctx->dma_buf_type = %s\n",
<------><------>cc_dma_buf_type(req_ctx->dma_buf_type));
 
<------>return 0;
 
cipher_exit:
<------>cc_unmap_cipher_request(dev, req_ctx, ivsize, src, dst);
<------>return rc;
}
 
void cc_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 cc_drvdata *drvdata = dev_get_drvdata(dev);
 
<------>if (areq_ctx->mac_buf_dma_addr) {
<------><------>dma_unmap_single(dev, areq_ctx->mac_buf_dma_addr,
<------><------><------><------> MAX_MAC_SIZE, DMA_BIDIRECTIONAL);
<------>}
 
<------>if (areq_ctx->cipher_mode == DRV_CIPHER_GCTR) {
<------><------>if (areq_ctx->hkey_dma_addr) {
<------><------><------>dma_unmap_single(dev, areq_ctx->hkey_dma_addr,
<------><------><------><------><------> AES_BLOCK_SIZE, DMA_BIDIRECTIONAL);
<------><------>}
 
<------><------>if (areq_ctx->gcm_block_len_dma_addr) {
<------><------><------>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) {
<------><------><------>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) {
<------><------><------>dma_unmap_single(dev, areq_ctx->gcm_iv_inc2_dma_addr,
<------><------><------><------><------> AES_BLOCK_SIZE, DMA_TO_DEVICE);
<------><------>}
<------>}
 
<------>if (areq_ctx->ccm_hdr_size != ccm_header_size_null) {
<------><------>if (areq_ctx->ccm_iv0_dma_addr) {
<------><------><------>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) {
<------><------>dma_unmap_single(dev, areq_ctx->gen_ctx.iv_dma_addr,
<------><------><------><------> hw_iv_size, DMA_BIDIRECTIONAL);
<------><------>kfree_sensitive(areq_ctx->gen_ctx.iv);
<------>}
 
<------>/* Release pool */
<------>if ((areq_ctx->assoc_buff_type == CC_DMA_BUF_MLLI ||
<------>     areq_ctx->data_buff_type == CC_DMA_BUF_MLLI) &&
<------>    (areq_ctx->mlli_params.mlli_virt_addr)) {
<------><------>dev_dbg(dev, "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);
<------>}
 
<------>dev_dbg(dev, "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,
<------><------>areq_ctx->assoclen, req->cryptlen);
 
<------>dma_unmap_sg(dev, req->src, areq_ctx->src.mapped_nents,
<------><------>     DMA_BIDIRECTIONAL);
<------>if (req->src != req->dst) {
<------><------>dev_dbg(dev, "Unmapping dst sgl: req->dst=%pK\n",
<------><------><------>sg_virt(req->dst));
<------><------>dma_unmap_sg(dev, req->dst, areq_ctx->dst.mapped_nents,
<------><------><------>     DMA_BIDIRECTIONAL);
<------>}
<------>if (drvdata->coherent &&
<------>    areq_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT &&
<------>    req->src == req->dst) {
<------><------>/* copy back mac from temporary location to deal with possible
<------><------> * data memory overriding that caused by cache coherence
<------><------> * problem.
<------><------> */
<------><------>cc_copy_mac(dev, req, CC_SG_FROM_BUF);
<------>}
}
 
static bool cc_is_icv_frag(unsigned int sgl_nents, unsigned int authsize,
<------><------><------>   u32 last_entry_data_size)
{
<------>return ((sgl_nents > 1) && (last_entry_data_size < authsize));
}
 
static int cc_aead_chain_iv(struct cc_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_to_dev(drvdata);
<------>gfp_t flags = cc_gfp_flags(&req->base);
<------>int rc = 0;
 
<------>if (!req->iv) {
<------><------>areq_ctx->gen_ctx.iv_dma_addr = 0;
<------><------>areq_ctx->gen_ctx.iv = NULL;
<------><------>goto chain_iv_exit;
<------>}
 
<------>areq_ctx->gen_ctx.iv = kmemdup(req->iv, hw_iv_size, flags);
<------>if (!areq_ctx->gen_ctx.iv)
<------><------>return -ENOMEM;
 
<------>areq_ctx->gen_ctx.iv_dma_addr =
<------><------>dma_map_single(dev, areq_ctx->gen_ctx.iv, hw_iv_size,
<------><------><------>       DMA_BIDIRECTIONAL);
<------>if (dma_mapping_error(dev, areq_ctx->gen_ctx.iv_dma_addr)) {
<------><------>dev_err(dev, "Mapping iv %u B at va=%pK for DMA failed\n",
<------><------><------>hw_iv_size, req->iv);
<------><------>kfree_sensitive(areq_ctx->gen_ctx.iv);
<------><------>areq_ctx->gen_ctx.iv = NULL;
<------><------>rc = -ENOMEM;
<------><------>goto chain_iv_exit;
<------>}
 
<------>dev_dbg(dev, "Mapped iv %u B at va=%pK to dma=%pad\n",
<------><------>hw_iv_size, req->iv, &areq_ctx->gen_ctx.iv_dma_addr);
 
chain_iv_exit:
<------>return rc;
}
 
static int cc_aead_chain_assoc(struct cc_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;
<------>int mapped_nents = 0;
<------>struct device *dev = drvdata_to_dev(drvdata);
 
<------>if (!sg_data) {
<------><------>rc = -EINVAL;
<------><------>goto chain_assoc_exit;
<------>}
 
<------>if (areq_ctx->assoclen == 0) {
<------><------>areq_ctx->assoc_buff_type = CC_DMA_BUF_NULL;
<------><------>areq_ctx->assoc.nents = 0;
<------><------>areq_ctx->assoc.mlli_nents = 0;
<------><------>dev_dbg(dev, "Chain assoc of length 0: buff_type=%s nents=%u\n",
<------><------><------>cc_dma_buf_type(areq_ctx->assoc_buff_type),
<------><------><------>areq_ctx->assoc.nents);
<------><------>goto chain_assoc_exit;
<------>}
 
<------>mapped_nents = sg_nents_for_len(req->src, areq_ctx->assoclen);
<------>if (mapped_nents < 0)
<------><------>return mapped_nents;
 
<------>if (mapped_nents > LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES) {
<------><------>dev_err(dev, "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 ((mapped_nents + 1) > LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES) {
<------><------><------>dev_err(dev, "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 (mapped_nents == 1 && areq_ctx->ccm_hdr_size == ccm_header_size_null)
<------><------>areq_ctx->assoc_buff_type = CC_DMA_BUF_DLLI;
<------>else
<------><------>areq_ctx->assoc_buff_type = CC_DMA_BUF_MLLI;
 
<------>if (do_chain || areq_ctx->assoc_buff_type == CC_DMA_BUF_MLLI) {
<------><------>dev_dbg(dev, "Chain assoc: buff_type=%s nents=%u\n",
<------><------><------>cc_dma_buf_type(areq_ctx->assoc_buff_type),
<------><------><------>areq_ctx->assoc.nents);
<------><------>cc_add_sg_entry(dev, sg_data, areq_ctx->assoc.nents, req->src,
<------><------><------><------>areq_ctx->assoclen, 0, is_last,
<------><------><------><------>&areq_ctx->assoc.mlli_nents);
<------><------>areq_ctx->assoc_buff_type = CC_DMA_BUF_MLLI;
<------>}
 
chain_assoc_exit:
<------>return rc;
}
 
static void cc_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;
<------>struct scatterlist *sg;
<------>ssize_t offset;
 
<------>areq_ctx->is_icv_fragmented = false;
 
<------>if ((req->src == req->dst) || direct == DRV_CRYPTO_DIRECTION_DECRYPT) {
<------><------>sg = areq_ctx->src_sgl;
<------><------>offset = *src_last_bytes - authsize;
<------>} else {
<------><------>sg = areq_ctx->dst_sgl;
<------><------>offset = *dst_last_bytes - authsize;
<------>}
 
<------>areq_ctx->icv_dma_addr = sg_dma_address(sg) + offset;
<------>areq_ctx->icv_virt_addr = sg_virt(sg) + offset;
}
 
static void cc_prepare_aead_data_mlli(struct cc_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;
<------>struct device *dev = drvdata_to_dev(drvdata);
<------>struct scatterlist *sg;
 
<------>if (req->src == req->dst) {
<------><------>/*INPLACE*/
<------><------>cc_add_sg_entry(dev, 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);
 
<------><------>areq_ctx->is_icv_fragmented =
<------><------><------>cc_is_icv_frag(areq_ctx->src.nents, authsize,
<------><------><------><------>       *src_last_bytes);
 
<------><------>if (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) {
<------><------><------><------>/* In coherent platforms (e.g. ACP)
<------><------><------><------> * already copying ICV for any
<------><------><------><------> * INPLACE-DECRYPT operation, hence
<------><------><------><------> * we must neglect this code.
<------><------><------><------> */
<------><------><------><------>if (!drvdata->coherent)
<------><------><------><------><------>cc_copy_mac(dev, req, CC_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 */
<------><------><------>sg = &areq_ctx->src_sgl[areq_ctx->src.nents - 1];
<------><------><------>/*Should hanlde if the sg is not contig.*/
<------><------><------>areq_ctx->icv_dma_addr = sg_dma_address(sg) +
<------><------><------><------>(*src_last_bytes - authsize);
<------><------><------>areq_ctx->icv_virt_addr = sg_virt(sg) +
<------><------><------><------>(*src_last_bytes - authsize);
<------><------>}
 
<------>} else if (direct == DRV_CRYPTO_DIRECTION_DECRYPT) {
<------><------>/*NON-INPLACE and DECRYPT*/
<------><------>cc_add_sg_entry(dev, 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);
<------><------>cc_add_sg_entry(dev, 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);
 
<------><------>areq_ctx->is_icv_fragmented =
<------><------><------>cc_is_icv_frag(areq_ctx->src.nents, authsize,
<------><------><------><------>       *src_last_bytes);
<------><------>/* Backup happens only when ICV is fragmented, ICV
 
<------><------> * verification is made by CPU compare in order to simplify
<------><------> * MAC verification upon request completion
<------><------> */
<------><------>if (areq_ctx->is_icv_fragmented) {
<------><------><------>cc_copy_mac(dev, req, CC_SG_TO_BUF);
<------><------><------>areq_ctx->icv_virt_addr = areq_ctx->backup_mac;
 
<------><------>} else { /* Contig. ICV */
<------><------><------>sg = &areq_ctx->src_sgl[areq_ctx->src.nents - 1];
<------><------><------>/*Should hanlde if the sg is not contig.*/
<------><------><------>areq_ctx->icv_dma_addr = sg_dma_address(sg) +
<------><------><------><------>(*src_last_bytes - authsize);
<------><------><------>areq_ctx->icv_virt_addr = sg_virt(sg) +
<------><------><------><------>(*src_last_bytes - authsize);
<------><------>}
 
<------>} else {
<------><------>/*NON-INPLACE and ENCRYPT*/
<------><------>cc_add_sg_entry(dev, 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);
<------><------>cc_add_sg_entry(dev, 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);
 
<------><------>areq_ctx->is_icv_fragmented =
<------><------><------>cc_is_icv_frag(areq_ctx->dst.nents, authsize,
<------><------><------><------>       *dst_last_bytes);
 
<------><------>if (!areq_ctx->is_icv_fragmented) {
<------><------><------>sg = &areq_ctx->dst_sgl[areq_ctx->dst.nents - 1];
<------><------><------>/* Contig. ICV */
<------><------><------>areq_ctx->icv_dma_addr = sg_dma_address(sg) +
<------><------><------><------>(*dst_last_bytes - authsize);
<------><------><------>areq_ctx->icv_virt_addr = sg_virt(sg) +
<------><------><------><------>(*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;
<------><------>}
<------>}
}
 
static int cc_aead_chain_data(struct cc_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_to_dev(drvdata);
<------>enum drv_crypto_direction direct = areq_ctx->gen_ctx.op_type;
<------>unsigned int authsize = areq_ctx->req_authsize;
<------>unsigned int src_last_bytes = 0, dst_last_bytes = 0;
<------>int rc = 0;
<------>u32 src_mapped_nents = 0, dst_mapped_nents = 0;
<------>u32 offset = 0;
<------>/* non-inplace mode */
<------>unsigned int size_for_map = req->assoclen + req->cryptlen;
<------>u32 sg_index = 0;
<------>u32 size_to_skip = req->assoclen;
<------>struct scatterlist *sgl;
 
<------>offset = size_to_skip;
 
<------>if (!sg_data)
<------><------>return -EINVAL;
 
<------>areq_ctx->src_sgl = req->src;
<------>areq_ctx->dst_sgl = req->dst;
 
<------>size_for_map += (direct == DRV_CRYPTO_DIRECTION_ENCRYPT) ?
<------><------><------>authsize : 0;
<------>src_mapped_nents = cc_get_sgl_nents(dev, req->src, size_for_map,
<------><------><------><------><------>    &src_last_bytes);
<------>sg_index = areq_ctx->src_sgl->length;
<------>//check where the data starts
<------>while (src_mapped_nents && (sg_index <= size_to_skip)) {
<------><------>src_mapped_nents--;
<------><------>offset -= areq_ctx->src_sgl->length;
<------><------>sgl = sg_next(areq_ctx->src_sgl);
<------><------>if (!sgl)
<------><------><------>break;
<------><------>areq_ctx->src_sgl = sgl;
<------><------>sg_index += areq_ctx->src_sgl->length;
<------>}
<------>if (src_mapped_nents > LLI_MAX_NUM_OF_DATA_ENTRIES) {
<------><------>dev_err(dev, "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;
 
<------><------>if (direct == DRV_CRYPTO_DIRECTION_ENCRYPT)
<------><------><------>size_for_map += authsize;
<------><------>else
<------><------><------>size_for_map -= authsize;
 
<------><------>rc = cc_map_sg(dev, req->dst, size_for_map, DMA_BIDIRECTIONAL,
<------><------><------>       &areq_ctx->dst.mapped_nents,
<------><------><------>       LLI_MAX_NUM_OF_DATA_ENTRIES, &dst_last_bytes,
<------><------><------>       &dst_mapped_nents);
<------><------>if (rc)
<------><------><------>goto chain_data_exit;
<------>}
 
<------>dst_mapped_nents = cc_get_sgl_nents(dev, req->dst, size_for_map,
<------><------><------><------><------>    &dst_last_bytes);
<------>sg_index = areq_ctx->dst_sgl->length;
<------>offset = size_to_skip;
 
<------>//check where the data starts
<------>while (dst_mapped_nents && sg_index <= size_to_skip) {
<------><------>dst_mapped_nents--;
<------><------>offset -= areq_ctx->dst_sgl->length;
<------><------>sgl = sg_next(areq_ctx->dst_sgl);
<------><------>if (!sgl)
<------><------><------>break;
<------><------>areq_ctx->dst_sgl = sgl;
<------><------>sg_index += areq_ctx->dst_sgl->length;
<------>}
<------>if (dst_mapped_nents > LLI_MAX_NUM_OF_DATA_ENTRIES) {
<------><------>dev_err(dev, "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 = CC_DMA_BUF_MLLI;
<------><------>cc_prepare_aead_data_mlli(drvdata, req, sg_data,
<------><------><------><------><------>  &src_last_bytes, &dst_last_bytes,
<------><------><------><------><------>  is_last_table);
<------>} else {
<------><------>areq_ctx->data_buff_type = CC_DMA_BUF_DLLI;
<------><------>cc_prepare_aead_data_dlli(req, &src_last_bytes,
<------><------><------><------><------>  &dst_last_bytes);
<------>}
 
chain_data_exit:
<------>return rc;
}
 
static void cc_update_aead_mlli_nents(struct cc_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 == CC_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 == CC_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 cc_map_aead_request(struct cc_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_to_dev(drvdata);
<------>struct buffer_array sg_data;
<------>unsigned int authsize = areq_ctx->req_authsize;
<------>int rc = 0;
<------>dma_addr_t dma_addr;
<------>u32 mapped_nents = 0;
<------>u32 dummy = 0; /*used for the assoc data fragments */
<------>u32 size_to_map;
<------>gfp_t flags = cc_gfp_flags(&req->base);
 
<------>mlli_params->curr_pool = NULL;
<------>sg_data.num_of_buffers = 0;
 
<------>/* copy mac to a temporary location to deal with possible
<------> * data memory overriding that caused by cache coherence problem.
<------> */
<------>if (drvdata->coherent &&
<------>    areq_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT &&
<------>    req->src == req->dst)
<------><------>cc_copy_mac(dev, req, CC_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);
 
<------>dma_addr = dma_map_single(dev, areq_ctx->mac_buf, MAX_MAC_SIZE,
<------><------><------><------>  DMA_BIDIRECTIONAL);
<------>if (dma_mapping_error(dev, dma_addr)) {
<------><------>dev_err(dev, "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;
<------>}
<------>areq_ctx->mac_buf_dma_addr = dma_addr;
 
<------>if (areq_ctx->ccm_hdr_size != ccm_header_size_null) {
<------><------>void *addr = areq_ctx->ccm_config + CCM_CTR_COUNT_0_OFFSET;
 
<------><------>dma_addr = dma_map_single(dev, addr, AES_BLOCK_SIZE,
<------><------><------><------><------>  DMA_TO_DEVICE);
 
<------><------>if (dma_mapping_error(dev, dma_addr)) {
<------><------><------>dev_err(dev, "Mapping mac_buf %u B at va=%pK for DMA failed\n",
<------><------><------><------>AES_BLOCK_SIZE, addr);
<------><------><------>areq_ctx->ccm_iv0_dma_addr = 0;
<------><------><------>rc = -ENOMEM;
<------><------><------>goto aead_map_failure;
<------><------>}
<------><------>areq_ctx->ccm_iv0_dma_addr = dma_addr;
 
<------><------>rc = cc_set_aead_conf_buf(dev, areq_ctx, areq_ctx->ccm_config,
<------><------><------><------><------>  &sg_data, areq_ctx->assoclen);
<------><------>if (rc)
<------><------><------>goto aead_map_failure;
<------>}
 
<------>if (areq_ctx->cipher_mode == DRV_CIPHER_GCTR) {
<------><------>dma_addr = dma_map_single(dev, areq_ctx->hkey, AES_BLOCK_SIZE,
<------><------><------><------><------>  DMA_BIDIRECTIONAL);
<------><------>if (dma_mapping_error(dev, dma_addr)) {
<------><------><------>dev_err(dev, "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->hkey_dma_addr = dma_addr;
 
<------><------>dma_addr = dma_map_single(dev, &areq_ctx->gcm_len_block,
<------><------><------><------><------>  AES_BLOCK_SIZE, DMA_TO_DEVICE);
<------><------>if (dma_mapping_error(dev, dma_addr)) {
<------><------><------>dev_err(dev, "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_block_len_dma_addr = dma_addr;
 
<------><------>dma_addr = dma_map_single(dev, areq_ctx->gcm_iv_inc1,
<------><------><------><------><------>  AES_BLOCK_SIZE, DMA_TO_DEVICE);
 
<------><------>if (dma_mapping_error(dev, dma_addr)) {
<------><------><------>dev_err(dev, "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_inc1_dma_addr = dma_addr;
 
<------><------>dma_addr = dma_map_single(dev, areq_ctx->gcm_iv_inc2,
<------><------><------><------><------>  AES_BLOCK_SIZE, DMA_TO_DEVICE);
 
<------><------>if (dma_mapping_error(dev, dma_addr)) {
<------><------><------>dev_err(dev, "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;
<------><------>}
<------><------>areq_ctx->gcm_iv_inc2_dma_addr = dma_addr;
<------>}
 
<------>size_to_map = req->cryptlen + req->assoclen;
<------>/* If we do in-place encryption, we also need the auth tag */
<------>if ((areq_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_ENCRYPT) &&
<------>   (req->src == req->dst)) {
<------><------>size_to_map += authsize;
<------>}
 
<------>rc = cc_map_sg(dev, req->src, size_to_map, DMA_BIDIRECTIONAL,
<------><------>       &areq_ctx->src.mapped_nents,
<------><------>       (LLI_MAX_NUM_OF_ASSOC_DATA_ENTRIES +
<------><------><------>LLI_MAX_NUM_OF_DATA_ENTRIES),
<------><------>       &dummy, &mapped_nents);
<------>if (rc)
<------><------>goto aead_map_failure;
 
<------>if (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 = cc_aead_chain_assoc(drvdata, req, &sg_data, true, false);
<------><------>if (rc)
<------><------><------>goto aead_map_failure;
<------><------>rc = cc_aead_chain_iv(drvdata, req, &sg_data, true, false);
<------><------>if (rc)
<------><------><------>goto aead_map_failure;
<------><------>rc = cc_aead_chain_data(drvdata, req, &sg_data, true, false);
<------><------>if (rc)
<------><------><------>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 = cc_aead_chain_assoc(drvdata, req, &sg_data, false, true);
<------><------>if (rc)
<------><------><------>goto aead_map_failure;
<------><------>rc = cc_aead_chain_iv(drvdata, req, &sg_data, false, true);
<------><------>if (rc)
<------><------><------>goto aead_map_failure;
<------><------>rc = cc_aead_chain_data(drvdata, req, &sg_data, true, true);
<------><------>if (rc)
<------><------><------>goto aead_map_failure;
<------>}
 
<------>/* Mlli support -start building the MLLI according to the above
<------> * results
<------> */
<------>if (areq_ctx->assoc_buff_type == CC_DMA_BUF_MLLI ||
<------>    areq_ctx->data_buff_type == CC_DMA_BUF_MLLI) {
<------><------>mlli_params->curr_pool = drvdata->mlli_buffs_pool;
<------><------>rc = cc_generate_mlli(dev, &sg_data, mlli_params, flags);
<------><------>if (rc)
<------><------><------>goto aead_map_failure;
 
<------><------>cc_update_aead_mlli_nents(drvdata, req);
<------><------>dev_dbg(dev, "assoc params mn %d\n",
<------><------><------>areq_ctx->assoc.mlli_nents);
<------><------>dev_dbg(dev, "src params mn %d\n", areq_ctx->src.mlli_nents);
<------><------>dev_dbg(dev, "dst params mn %d\n", areq_ctx->dst.mlli_nents);
<------>}
<------>return 0;
 
aead_map_failure:
<------>cc_unmap_aead_request(dev, req);
<------>return rc;
}
 
int cc_map_hash_request_final(struct cc_drvdata *drvdata, void *ctx,
<------><------><------>      struct scatterlist *src, unsigned int nbytes,
<------><------><------>      bool do_update, gfp_t flags)
{
<------>struct ahash_req_ctx *areq_ctx = (struct ahash_req_ctx *)ctx;
<------>struct device *dev = drvdata_to_dev(drvdata);
<------>u8 *curr_buff = cc_hash_buf(areq_ctx);
<------>u32 *curr_buff_cnt = cc_hash_buf_cnt(areq_ctx);
<------>struct mlli_params *mlli_params = &areq_ctx->mlli_params;
<------>struct buffer_array sg_data;
<------>int rc = 0;
<------>u32 dummy = 0;
<------>u32 mapped_nents = 0;
 
<------>dev_dbg(dev, "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 = CC_DMA_BUF_NULL;
<------>mlli_params->curr_pool = NULL;
<------>sg_data.num_of_buffers = 0;
<------>areq_ctx->in_nents = 0;
 
<------>if (nbytes == 0 && *curr_buff_cnt == 0) {
<------><------>/* nothing to do */
<------><------>return 0;
<------>}
 
<------>/* map the previous buffer */
<------>if (*curr_buff_cnt) {
<------><------>rc = cc_set_hash_buf(dev, areq_ctx, curr_buff, *curr_buff_cnt,
<------><------><------><------>     &sg_data);
<------><------>if (rc)
<------><------><------>return rc;
<------>}
 
<------>if (src && nbytes > 0 && do_update) {
<------><------>rc = cc_map_sg(dev, src, nbytes, DMA_TO_DEVICE,
<------><------><------>       &areq_ctx->in_nents, LLI_MAX_NUM_OF_DATA_ENTRIES,
<------><------><------>       &dummy, &mapped_nents);
<------><------>if (rc)
<------><------><------>goto unmap_curr_buff;
<------><------>if (src && mapped_nents == 1 &&
<------><------>    areq_ctx->data_dma_buf_type == CC_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 = CC_DMA_BUF_DLLI;
<------><------>} else {
<------><------><------>areq_ctx->data_dma_buf_type = CC_DMA_BUF_MLLI;
<------><------>}
<------>}
 
<------>/*build mlli */
<------>if (areq_ctx->data_dma_buf_type == CC_DMA_BUF_MLLI) {
<------><------>mlli_params->curr_pool = drvdata->mlli_buffs_pool;
<------><------>/* add the src data to the sg_data */
<------><------>cc_add_sg_entry(dev, &sg_data, areq_ctx->in_nents, src, nbytes,
<------><------><------><------>0, true, &areq_ctx->mlli_nents);
<------><------>rc = cc_generate_mlli(dev, &sg_data, mlli_params, flags);
<------><------>if (rc)
<------><------><------>goto fail_unmap_din;
<------>}
<------>/* change the buffer index for the unmap function */
<------>areq_ctx->buff_index = (areq_ctx->buff_index ^ 1);
<------>dev_dbg(dev, "areq_ctx->data_dma_buf_type = %s\n",
<------><------>cc_dma_buf_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)
<------><------>dma_unmap_sg(dev, areq_ctx->buff_sg, 1, DMA_TO_DEVICE);
 
<------>return rc;
}
 
int cc_map_hash_request_update(struct cc_drvdata *drvdata, void *ctx,
<------><------><------>       struct scatterlist *src, unsigned int nbytes,
<------><------><------>       unsigned int block_size, gfp_t flags)
{
<------>struct ahash_req_ctx *areq_ctx = (struct ahash_req_ctx *)ctx;
<------>struct device *dev = drvdata_to_dev(drvdata);
<------>u8 *curr_buff = cc_hash_buf(areq_ctx);
<------>u32 *curr_buff_cnt = cc_hash_buf_cnt(areq_ctx);
<------>u8 *next_buff = cc_next_buf(areq_ctx);
<------>u32 *next_buff_cnt = cc_next_buf_cnt(areq_ctx);
<------>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;
<------>unsigned int swap_index = 0;
<------>int rc = 0;
<------>u32 dummy = 0;
<------>u32 mapped_nents = 0;
 
<------>dev_dbg(dev, " 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 = CC_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 (total_in_len < block_size) {
<------><------>dev_dbg(dev, " 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 = sg_nents_for_len(src, nbytes);
<------><------>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;
 
<------>dev_dbg(dev, " 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) {
<------><------>dev_dbg(dev, " handle residue: next buff %pK skip data %u residue %u\n",
<------><------><------>next_buff, (update_data_len - *curr_buff_cnt),
<------><------><------>*next_buff_cnt);
<------><------>cc_copy_sg_portion(dev, next_buff, src,
<------><------><------><------>   (update_data_len - *curr_buff_cnt),
<------><------><------><------>   nbytes, CC_SG_TO_BUF);
<------><------>/* change the buffer index for next operation */
<------><------>swap_index = 1;
<------>}
 
<------>if (*curr_buff_cnt) {
<------><------>rc = cc_set_hash_buf(dev, areq_ctx, curr_buff, *curr_buff_cnt,
<------><------><------><------>     &sg_data);
<------><------>if (rc)
<------><------><------>return rc;
<------><------>/* change the buffer index for next operation */
<------><------>swap_index = 1;
<------>}
 
<------>if (update_data_len > *curr_buff_cnt) {
<------><------>rc = cc_map_sg(dev, src, (update_data_len - *curr_buff_cnt),
<------><------><------>       DMA_TO_DEVICE, &areq_ctx->in_nents,
<------><------><------>       LLI_MAX_NUM_OF_DATA_ENTRIES, &dummy,
<------><------><------>       &mapped_nents);
<------><------>if (rc)
<------><------><------>goto unmap_curr_buff;
<------><------>if (mapped_nents == 1 &&
<------><------>    areq_ctx->data_dma_buf_type == CC_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 = CC_DMA_BUF_DLLI;
<------><------><------>areq_ctx->curr_sg = areq_ctx->buff_sg;
<------><------>} else {
<------><------><------>areq_ctx->data_dma_buf_type = CC_DMA_BUF_MLLI;
<------><------>}
<------>}
 
<------>if (areq_ctx->data_dma_buf_type == CC_DMA_BUF_MLLI) {
<------><------>mlli_params->curr_pool = drvdata->mlli_buffs_pool;
<------><------>/* add the src data to the sg_data */
<------><------>cc_add_sg_entry(dev, &sg_data, areq_ctx->in_nents, src,
<------><------><------><------>(update_data_len - *curr_buff_cnt), 0, true,
<------><------><------><------>&areq_ctx->mlli_nents);
<------><------>rc = cc_generate_mlli(dev, &sg_data, mlli_params, flags);
<------><------>if (rc)
<------><------><------>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)
<------><------>dma_unmap_sg(dev, areq_ctx->buff_sg, 1, DMA_TO_DEVICE);
 
<------>return rc;
}
 
void cc_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 = cc_next_buf_cnt(areq_ctx);
 
<------>/*In case a pool was set, a table was
<------> *allocated and should be released
<------> */
<------>if (areq_ctx->mlli_params.curr_pool) {
<------><------>dev_dbg(dev, "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 && areq_ctx->in_nents) {
<------><------>dev_dbg(dev, "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) {
<------><------>dev_dbg(dev, "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 cc_buffer_mgr_init(struct cc_drvdata *drvdata)
{
<------>struct device *dev = drvdata_to_dev(drvdata);
 
<------>drvdata->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 (!drvdata->mlli_buffs_pool)
<------><------>return -ENOMEM;
 
<------>return 0;
}
 
int cc_buffer_mgr_fini(struct cc_drvdata *drvdata)
{
<------>dma_pool_destroy(drvdata->mlli_buffs_pool);
<------>return 0;
}