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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/crypto/intel/qat/qat_common/qat_bl.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/crypto/intel/qat/qat_common/qat_bl.c')
-rw-r--r-- | drivers/crypto/intel/qat/qat_common/qat_bl.c | 410 |
1 files changed, 410 insertions, 0 deletions
diff --git a/drivers/crypto/intel/qat/qat_common/qat_bl.c b/drivers/crypto/intel/qat/qat_common/qat_bl.c new file mode 100644 index 0000000000..76baed0a76 --- /dev/null +++ b/drivers/crypto/intel/qat/qat_common/qat_bl.c @@ -0,0 +1,410 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* Copyright(c) 2014 - 2022 Intel Corporation */ +#include <linux/device.h> +#include <linux/dma-mapping.h> +#include <linux/pci.h> +#include <linux/scatterlist.h> +#include <linux/slab.h> +#include <linux/types.h> +#include "adf_accel_devices.h" +#include "qat_bl.h" +#include "qat_crypto.h" + +void qat_bl_free_bufl(struct adf_accel_dev *accel_dev, + struct qat_request_buffs *buf) +{ + struct device *dev = &GET_DEV(accel_dev); + struct qat_alg_buf_list *bl = buf->bl; + struct qat_alg_buf_list *blout = buf->blout; + dma_addr_t blp = buf->blp; + dma_addr_t blpout = buf->bloutp; + size_t sz = buf->sz; + size_t sz_out = buf->sz_out; + int bl_dma_dir; + int i; + + bl_dma_dir = blp != blpout ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL; + + for (i = 0; i < bl->num_bufs; i++) + dma_unmap_single(dev, bl->buffers[i].addr, + bl->buffers[i].len, bl_dma_dir); + + dma_unmap_single(dev, blp, sz, DMA_TO_DEVICE); + + if (!buf->sgl_src_valid) + kfree(bl); + + if (blp != blpout) { + for (i = 0; i < blout->num_mapped_bufs; i++) { + dma_unmap_single(dev, blout->buffers[i].addr, + blout->buffers[i].len, + DMA_FROM_DEVICE); + } + dma_unmap_single(dev, blpout, sz_out, DMA_TO_DEVICE); + + if (!buf->sgl_dst_valid) + kfree(blout); + } +} + +static int __qat_bl_sgl_to_bufl(struct adf_accel_dev *accel_dev, + struct scatterlist *sgl, + struct scatterlist *sglout, + struct qat_request_buffs *buf, + dma_addr_t extra_dst_buff, + size_t sz_extra_dst_buff, + unsigned int sskip, + unsigned int dskip, + gfp_t flags) +{ + struct device *dev = &GET_DEV(accel_dev); + int i, sg_nctr = 0; + int n = sg_nents(sgl); + struct qat_alg_buf_list *bufl; + struct qat_alg_buf_list *buflout = NULL; + dma_addr_t blp = DMA_MAPPING_ERROR; + dma_addr_t bloutp = DMA_MAPPING_ERROR; + struct scatterlist *sg; + size_t sz_out, sz = struct_size(bufl, buffers, n); + int node = dev_to_node(&GET_DEV(accel_dev)); + unsigned int left; + int bufl_dma_dir; + + if (unlikely(!n)) + return -EINVAL; + + buf->sgl_src_valid = false; + buf->sgl_dst_valid = false; + + if (n > QAT_MAX_BUFF_DESC) { + bufl = kzalloc_node(sz, flags, node); + if (unlikely(!bufl)) + return -ENOMEM; + } else { + bufl = &buf->sgl_src.sgl_hdr; + memset(bufl, 0, sizeof(struct qat_alg_buf_list)); + buf->sgl_src_valid = true; + } + + bufl_dma_dir = sgl != sglout ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL; + + for (i = 0; i < n; i++) + bufl->buffers[i].addr = DMA_MAPPING_ERROR; + + left = sskip; + + for_each_sg(sgl, sg, n, i) { + int y = sg_nctr; + + if (!sg->length) + continue; + + if (left >= sg->length) { + left -= sg->length; + continue; + } + bufl->buffers[y].addr = dma_map_single(dev, sg_virt(sg) + left, + sg->length - left, + bufl_dma_dir); + bufl->buffers[y].len = sg->length; + if (unlikely(dma_mapping_error(dev, bufl->buffers[y].addr))) + goto err_in; + sg_nctr++; + if (left) { + bufl->buffers[y].len -= left; + left = 0; + } + } + bufl->num_bufs = sg_nctr; + blp = dma_map_single(dev, bufl, sz, DMA_TO_DEVICE); + if (unlikely(dma_mapping_error(dev, blp))) + goto err_in; + buf->bl = bufl; + buf->blp = blp; + buf->sz = sz; + /* Handle out of place operation */ + if (sgl != sglout) { + struct qat_alg_buf *buffers; + int extra_buff = extra_dst_buff ? 1 : 0; + int n_sglout = sg_nents(sglout); + + n = n_sglout + extra_buff; + sz_out = struct_size(buflout, buffers, n); + left = dskip; + + sg_nctr = 0; + + if (n > QAT_MAX_BUFF_DESC) { + buflout = kzalloc_node(sz_out, flags, node); + if (unlikely(!buflout)) + goto err_in; + } else { + buflout = &buf->sgl_dst.sgl_hdr; + memset(buflout, 0, sizeof(struct qat_alg_buf_list)); + buf->sgl_dst_valid = true; + } + + buffers = buflout->buffers; + for (i = 0; i < n; i++) + buffers[i].addr = DMA_MAPPING_ERROR; + + for_each_sg(sglout, sg, n_sglout, i) { + int y = sg_nctr; + + if (!sg->length) + continue; + + if (left >= sg->length) { + left -= sg->length; + continue; + } + buffers[y].addr = dma_map_single(dev, sg_virt(sg) + left, + sg->length - left, + DMA_FROM_DEVICE); + if (unlikely(dma_mapping_error(dev, buffers[y].addr))) + goto err_out; + buffers[y].len = sg->length; + sg_nctr++; + if (left) { + buffers[y].len -= left; + left = 0; + } + } + if (extra_buff) { + buffers[sg_nctr].addr = extra_dst_buff; + buffers[sg_nctr].len = sz_extra_dst_buff; + } + + buflout->num_bufs = sg_nctr; + buflout->num_bufs += extra_buff; + buflout->num_mapped_bufs = sg_nctr; + bloutp = dma_map_single(dev, buflout, sz_out, DMA_TO_DEVICE); + if (unlikely(dma_mapping_error(dev, bloutp))) + goto err_out; + buf->blout = buflout; + buf->bloutp = bloutp; + buf->sz_out = sz_out; + } else { + /* Otherwise set the src and dst to the same address */ + buf->bloutp = buf->blp; + buf->sz_out = 0; + } + return 0; + +err_out: + if (!dma_mapping_error(dev, bloutp)) + dma_unmap_single(dev, bloutp, sz_out, DMA_TO_DEVICE); + + n = sg_nents(sglout); + for (i = 0; i < n; i++) { + if (buflout->buffers[i].addr == extra_dst_buff) + break; + if (!dma_mapping_error(dev, buflout->buffers[i].addr)) + dma_unmap_single(dev, buflout->buffers[i].addr, + buflout->buffers[i].len, + DMA_FROM_DEVICE); + } + + if (!buf->sgl_dst_valid) + kfree(buflout); + +err_in: + if (!dma_mapping_error(dev, blp)) + dma_unmap_single(dev, blp, sz, DMA_TO_DEVICE); + + n = sg_nents(sgl); + for (i = 0; i < n; i++) + if (!dma_mapping_error(dev, bufl->buffers[i].addr)) + dma_unmap_single(dev, bufl->buffers[i].addr, + bufl->buffers[i].len, + bufl_dma_dir); + + if (!buf->sgl_src_valid) + kfree(bufl); + + dev_err(dev, "Failed to map buf for dma\n"); + return -ENOMEM; +} + +int qat_bl_sgl_to_bufl(struct adf_accel_dev *accel_dev, + struct scatterlist *sgl, + struct scatterlist *sglout, + struct qat_request_buffs *buf, + struct qat_sgl_to_bufl_params *params, + gfp_t flags) +{ + dma_addr_t extra_dst_buff = 0; + size_t sz_extra_dst_buff = 0; + unsigned int sskip = 0; + unsigned int dskip = 0; + + if (params) { + extra_dst_buff = params->extra_dst_buff; + sz_extra_dst_buff = params->sz_extra_dst_buff; + sskip = params->sskip; + dskip = params->dskip; + } + + return __qat_bl_sgl_to_bufl(accel_dev, sgl, sglout, buf, + extra_dst_buff, sz_extra_dst_buff, + sskip, dskip, flags); +} + +static void qat_bl_sgl_unmap(struct adf_accel_dev *accel_dev, + struct qat_alg_buf_list *bl) +{ + struct device *dev = &GET_DEV(accel_dev); + int n = bl->num_bufs; + int i; + + for (i = 0; i < n; i++) + if (!dma_mapping_error(dev, bl->buffers[i].addr)) + dma_unmap_single(dev, bl->buffers[i].addr, + bl->buffers[i].len, DMA_FROM_DEVICE); +} + +static int qat_bl_sgl_map(struct adf_accel_dev *accel_dev, + struct scatterlist *sgl, + struct qat_alg_buf_list **bl) +{ + struct device *dev = &GET_DEV(accel_dev); + struct qat_alg_buf_list *bufl; + int node = dev_to_node(dev); + struct scatterlist *sg; + int n, i, sg_nctr; + size_t sz; + + n = sg_nents(sgl); + sz = struct_size(bufl, buffers, n); + bufl = kzalloc_node(sz, GFP_KERNEL, node); + if (unlikely(!bufl)) + return -ENOMEM; + + for (i = 0; i < n; i++) + bufl->buffers[i].addr = DMA_MAPPING_ERROR; + + sg_nctr = 0; + for_each_sg(sgl, sg, n, i) { + int y = sg_nctr; + + if (!sg->length) + continue; + + bufl->buffers[y].addr = dma_map_single(dev, sg_virt(sg), + sg->length, + DMA_FROM_DEVICE); + bufl->buffers[y].len = sg->length; + if (unlikely(dma_mapping_error(dev, bufl->buffers[y].addr))) + goto err_map; + sg_nctr++; + } + bufl->num_bufs = sg_nctr; + bufl->num_mapped_bufs = sg_nctr; + + *bl = bufl; + + return 0; + +err_map: + for (i = 0; i < n; i++) + if (!dma_mapping_error(dev, bufl->buffers[i].addr)) + dma_unmap_single(dev, bufl->buffers[i].addr, + bufl->buffers[i].len, + DMA_FROM_DEVICE); + kfree(bufl); + *bl = NULL; + + return -ENOMEM; +} + +static void qat_bl_sgl_free_unmap(struct adf_accel_dev *accel_dev, + struct scatterlist *sgl, + struct qat_alg_buf_list *bl, + bool free_bl) +{ + if (bl) { + qat_bl_sgl_unmap(accel_dev, bl); + + if (free_bl) + kfree(bl); + } + if (sgl) + sgl_free(sgl); +} + +static int qat_bl_sgl_alloc_map(struct adf_accel_dev *accel_dev, + struct scatterlist **sgl, + struct qat_alg_buf_list **bl, + unsigned int dlen, + gfp_t gfp) +{ + struct scatterlist *dst; + int ret; + + dst = sgl_alloc(dlen, gfp, NULL); + if (!dst) { + dev_err(&GET_DEV(accel_dev), "sg_alloc failed\n"); + return -ENOMEM; + } + + ret = qat_bl_sgl_map(accel_dev, dst, bl); + if (ret) + goto err; + + *sgl = dst; + + return 0; + +err: + sgl_free(dst); + *sgl = NULL; + return ret; +} + +int qat_bl_realloc_map_new_dst(struct adf_accel_dev *accel_dev, + struct scatterlist **sg, + unsigned int dlen, + struct qat_request_buffs *qat_bufs, + gfp_t gfp) +{ + struct device *dev = &GET_DEV(accel_dev); + dma_addr_t new_blp = DMA_MAPPING_ERROR; + struct qat_alg_buf_list *new_bl; + struct scatterlist *new_sg; + size_t new_bl_size; + int ret; + + ret = qat_bl_sgl_alloc_map(accel_dev, &new_sg, &new_bl, dlen, gfp); + if (ret) + return ret; + + new_bl_size = struct_size(new_bl, buffers, new_bl->num_bufs); + + /* Map new firmware SGL descriptor */ + new_blp = dma_map_single(dev, new_bl, new_bl_size, DMA_TO_DEVICE); + if (unlikely(dma_mapping_error(dev, new_blp))) + goto err; + + /* Unmap old firmware SGL descriptor */ + dma_unmap_single(dev, qat_bufs->bloutp, qat_bufs->sz_out, DMA_TO_DEVICE); + + /* Free and unmap old scatterlist */ + qat_bl_sgl_free_unmap(accel_dev, *sg, qat_bufs->blout, + !qat_bufs->sgl_dst_valid); + + qat_bufs->sgl_dst_valid = false; + qat_bufs->blout = new_bl; + qat_bufs->bloutp = new_blp; + qat_bufs->sz_out = new_bl_size; + + *sg = new_sg; + + return 0; +err: + qat_bl_sgl_free_unmap(accel_dev, new_sg, new_bl, true); + + if (!dma_mapping_error(dev, new_blp)) + dma_unmap_single(dev, new_blp, new_bl_size, DMA_TO_DEVICE); + + return -ENOMEM; +} |