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crypto: iaa - Remove header table code

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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@linaro.org>
Closes: https://lore.kernel.org/linux-crypto/b2e0bd974981291e16882686a2b9b1db3986abe4.camel@linux.intel.com/T/#m4403253d6a4347a925fab4fc1cdb4ef7c095fb86
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tom Zanussi
2024-01-08 16:53:48 -06:00
committed by Herbert Xu
parent 4bb439e856
commit 3274819b3c
3 changed files with 3 additions and 131 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/crypto/intel/iaa/iaa_crypto.h
-25
View File
@@ -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);
drivers/crypto/intel/iaa/iaa_crypto_comp_fixed.c
-1
View File
@@ -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");
drivers/crypto/intel/iaa/iaa_crypto_main.c
+3 -105
View File
@@ -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)