The header table and related code is currently unused - it was included and used for canned mode, but canned mode has been removed, so this code can be safely removed as well. This indirectly fixes a bug reported by Dan Carpenter. Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Closes: https://lore.kernel.org/linux-crypto/b2e0bd974981291e16882686a2b9b1db3986abe4.camel@xxxxxxxxxxxxxxx/T/#m4403253d6a4347a925fab4fc1cdb4ef7c095fb86 Signed-off-by: Tom Zanussi <tom.zanussi@xxxxxxxxxxxxxxx> --- drivers/crypto/intel/iaa/iaa_crypto.h | 25 ---- .../crypto/intel/iaa/iaa_crypto_comp_fixed.c | 1 - drivers/crypto/intel/iaa/iaa_crypto_main.c | 108 +----------------- 3 files changed, 3 insertions(+), 131 deletions(-) diff --git a/drivers/crypto/intel/iaa/iaa_crypto.h b/drivers/crypto/intel/iaa/iaa_crypto.h index 014420f7beb0..2524091a5f70 100644 --- a/drivers/crypto/intel/iaa/iaa_crypto.h +++ b/drivers/crypto/intel/iaa/iaa_crypto.h @@ -59,10 +59,8 @@ struct iaa_device_compression_mode { const char *name; struct aecs_comp_table_record *aecs_comp_table; - struct aecs_decomp_table_record *aecs_decomp_table; dma_addr_t aecs_comp_table_dma_addr; - dma_addr_t aecs_decomp_table_dma_addr; }; /* Representation of IAA device with wqs, populated by probe */ @@ -107,23 +105,6 @@ struct aecs_comp_table_record { u32 reserved_padding[2]; } __packed; -/* AECS for decompress */ -struct aecs_decomp_table_record { - u32 crc; - u32 xor_checksum; - u32 low_filter_param; - u32 high_filter_param; - u32 output_mod_idx; - u32 drop_init_decomp_out_bytes; - u32 reserved[36]; - u32 output_accum_data[2]; - u32 out_bits_valid; - u32 bit_off_indexing; - u32 input_accum_data[64]; - u8 size_qw[32]; - u32 decomp_state[1220]; -} __packed; - int iaa_aecs_init_fixed(void); void iaa_aecs_cleanup_fixed(void); @@ -136,9 +117,6 @@ struct iaa_compression_mode { int ll_table_size; u32 *d_table; int d_table_size; - u32 *header_table; - int header_table_size; - u16 gen_decomp_table_flags; iaa_dev_comp_init_fn_t init; iaa_dev_comp_free_fn_t free; }; @@ -148,9 +126,6 @@ int add_iaa_compression_mode(const char *name, int ll_table_size, const u32 *d_table, int d_table_size, - const u8 *header_table, - int header_table_size, - u16 gen_decomp_table_flags, iaa_dev_comp_init_fn_t init, iaa_dev_comp_free_fn_t free); diff --git a/drivers/crypto/intel/iaa/iaa_crypto_comp_fixed.c b/drivers/crypto/intel/iaa/iaa_crypto_comp_fixed.c index 45cf5d74f0fb..19d9a333ac49 100644 --- a/drivers/crypto/intel/iaa/iaa_crypto_comp_fixed.c +++ b/drivers/crypto/intel/iaa/iaa_crypto_comp_fixed.c @@ -78,7 +78,6 @@ int iaa_aecs_init_fixed(void) sizeof(fixed_ll_sym), fixed_d_sym, sizeof(fixed_d_sym), - NULL, 0, 0, init_fixed_mode, NULL); if (!ret) pr_debug("IAA fixed compression mode initialized\n"); diff --git a/drivers/crypto/intel/iaa/iaa_crypto_main.c b/drivers/crypto/intel/iaa/iaa_crypto_main.c index dfd3baf0a8d8..39a5fc905c4d 100644 --- a/drivers/crypto/intel/iaa/iaa_crypto_main.c +++ b/drivers/crypto/intel/iaa/iaa_crypto_main.c @@ -258,16 +258,14 @@ static void free_iaa_compression_mode(struct iaa_compression_mode *mode) kfree(mode->name); kfree(mode->ll_table); kfree(mode->d_table); - kfree(mode->header_table); kfree(mode); } /* - * IAA Compression modes are defined by an ll_table, a d_table, and an - * optional header_table. These tables are typically generated and - * captured using statistics collected from running actual - * compress/decompress workloads. + * IAA Compression modes are defined by an ll_table and a d_table. + * These tables are typically generated and captured using statistics + * collected from running actual compress/decompress workloads. * * A module or other kernel code can add and remove compression modes * with a given name using the exported @add_iaa_compression_mode() @@ -315,9 +313,6 @@ EXPORT_SYMBOL_GPL(remove_iaa_compression_mode); * @ll_table_size: The ll table size in bytes * @d_table: The d table * @d_table_size: The d table size in bytes - * @header_table: Optional header table - * @header_table_size: Optional header table size in bytes - * @gen_decomp_table_flags: Otional flags used to generate the decomp table * @init: Optional callback function to init the compression mode data * @free: Optional callback function to free the compression mode data * @@ -330,9 +325,6 @@ int add_iaa_compression_mode(const char *name, int ll_table_size, const u32 *d_table, int d_table_size, - const u8 *header_table, - int header_table_size, - u16 gen_decomp_table_flags, iaa_dev_comp_init_fn_t init, iaa_dev_comp_free_fn_t free) { @@ -370,16 +362,6 @@ int add_iaa_compression_mode(const char *name, mode->d_table_size = d_table_size; } - if (header_table) { - mode->header_table = kzalloc(header_table_size, GFP_KERNEL); - if (!mode->header_table) - goto free; - memcpy(mode->header_table, header_table, header_table_size); - mode->header_table_size = header_table_size; - } - - mode->gen_decomp_table_flags = gen_decomp_table_flags; - mode->init = init; mode->free = free; @@ -420,10 +402,6 @@ static void free_device_compression_mode(struct iaa_device *iaa_device, if (device_mode->aecs_comp_table) dma_free_coherent(dev, size, device_mode->aecs_comp_table, device_mode->aecs_comp_table_dma_addr); - if (device_mode->aecs_decomp_table) - dma_free_coherent(dev, size, device_mode->aecs_decomp_table, - device_mode->aecs_decomp_table_dma_addr); - kfree(device_mode); } @@ -440,73 +418,6 @@ static int check_completion(struct device *dev, bool compress, bool only_once); -static int decompress_header(struct iaa_device_compression_mode *device_mode, - struct iaa_compression_mode *mode, - struct idxd_wq *wq) -{ - dma_addr_t src_addr, src2_addr; - struct idxd_desc *idxd_desc; - struct iax_hw_desc *desc; - struct device *dev; - int ret = 0; - - idxd_desc = idxd_alloc_desc(wq, IDXD_OP_BLOCK); - if (IS_ERR(idxd_desc)) - return PTR_ERR(idxd_desc); - - desc = idxd_desc->iax_hw; - - dev = &wq->idxd->pdev->dev; - - src_addr = dma_map_single(dev, (void *)mode->header_table, - mode->header_table_size, DMA_TO_DEVICE); - dev_dbg(dev, "%s: mode->name %s, src_addr %llx, dev %p, src %p, slen %d\n", - __func__, mode->name, src_addr, dev, - mode->header_table, mode->header_table_size); - if (unlikely(dma_mapping_error(dev, src_addr))) { - dev_dbg(dev, "dma_map_single err, exiting\n"); - ret = -ENOMEM; - return ret; - } - - desc->flags = IAX_AECS_GEN_FLAG; - desc->opcode = IAX_OPCODE_DECOMPRESS; - - desc->src1_addr = (u64)src_addr; - desc->src1_size = mode->header_table_size; - - src2_addr = device_mode->aecs_decomp_table_dma_addr; - desc->src2_addr = (u64)src2_addr; - desc->src2_size = 1088; - dev_dbg(dev, "%s: mode->name %s, src2_addr %llx, dev %p, src2_size %d\n", - __func__, mode->name, desc->src2_addr, dev, desc->src2_size); - desc->max_dst_size = 0; // suppressed output - - desc->decompr_flags = mode->gen_decomp_table_flags; - - desc->priv = 0; - - desc->completion_addr = idxd_desc->compl_dma; - - ret = idxd_submit_desc(wq, idxd_desc); - if (ret) { - pr_err("%s: submit_desc failed ret=0x%x\n", __func__, ret); - goto out; - } - - ret = check_completion(dev, idxd_desc->iax_completion, false, false); - if (ret) - dev_dbg(dev, "%s: mode->name %s check_completion failed ret=%d\n", - __func__, mode->name, ret); - else - dev_dbg(dev, "%s: mode->name %s succeeded\n", __func__, - mode->name); -out: - dma_unmap_single(dev, src_addr, 1088, DMA_TO_DEVICE); - - return ret; -} - static int init_device_compression_mode(struct iaa_device *iaa_device, struct iaa_compression_mode *mode, int idx, struct idxd_wq *wq) @@ -529,24 +440,11 @@ static int init_device_compression_mode(struct iaa_device *iaa_device, if (!device_mode->aecs_comp_table) goto free; - device_mode->aecs_decomp_table = dma_alloc_coherent(dev, size, - &device_mode->aecs_decomp_table_dma_addr, GFP_KERNEL); - if (!device_mode->aecs_decomp_table) - goto free; - /* Add Huffman table to aecs */ memset(device_mode->aecs_comp_table, 0, sizeof(*device_mode->aecs_comp_table)); memcpy(device_mode->aecs_comp_table->ll_sym, mode->ll_table, mode->ll_table_size); memcpy(device_mode->aecs_comp_table->d_sym, mode->d_table, mode->d_table_size); - if (mode->header_table) { - ret = decompress_header(device_mode, mode, wq); - if (ret) { - pr_debug("iaa header decompression failed: ret=%d\n", ret); - goto free; - } - } - if (mode->init) { ret = mode->init(device_mode); if (ret) -- 2.34.1
