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crypto: iaa - Add compression mode management along with fixed mode
Define an in-kernel API for adding and removing compression modes, which can be used by kernel modules or other kernel code that implements IAA compression modes. Also add a separate file, iaa_crypto_comp_fixed.c, containing huffman tables generated for the IAA 'fixed' compression mode. Future compression modes can be added in a similar fashion. One or more crypto compression algorithms will be created for each compression mode, each of which can be selected as the compression algorithm to be used by a particular facility. Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tom Zanussi
Herbert Xu
parent
f57bf3f783
commit
b190447e0f
@ -7,4 +7,4 @@ ccflags-y += -I $(srctree)/drivers/dma/idxd -DDEFAULT_SYMBOL_NAMESPACE=IDXD
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obj-$(CONFIG_CRYPTO_DEV_IAA_CRYPTO) := iaa_crypto.o
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iaa_crypto-y := iaa_crypto_main.o
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iaa_crypto-y := iaa_crypto_main.o iaa_crypto_comp_fixed.o
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@ -10,6 +10,11 @@
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#define IDXD_SUBDRIVER_NAME "crypto"
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#define IAA_COMP_MODES_MAX 2
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#define FIXED_HDR 0x2
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#define FIXED_HDR_SIZE 3
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/* Representation of IAA workqueue */
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struct iaa_wq {
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struct list_head list;
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@ -18,11 +23,23 @@ struct iaa_wq {
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struct iaa_device *iaa_device;
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};
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struct iaa_device_compression_mode {
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const char *name;
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struct aecs_comp_table_record *aecs_comp_table;
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struct aecs_decomp_table_record *aecs_decomp_table;
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dma_addr_t aecs_comp_table_dma_addr;
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dma_addr_t aecs_decomp_table_dma_addr;
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};
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/* Representation of IAA device with wqs, populated by probe */
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struct iaa_device {
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struct list_head list;
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struct idxd_device *idxd;
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struct iaa_device_compression_mode *compression_modes[IAA_COMP_MODES_MAX];
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int n_wq;
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struct list_head wqs;
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};
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@ -34,4 +51,72 @@ struct wq_table_entry {
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int cur_wq;
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};
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#define IAA_AECS_ALIGN 32
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/*
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* Analytics Engine Configuration and State (AECS) contains parameters and
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* internal state of the analytics engine.
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*/
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struct aecs_comp_table_record {
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u32 crc;
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u32 xor_checksum;
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u32 reserved0[5];
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u32 num_output_accum_bits;
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u8 output_accum[256];
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u32 ll_sym[286];
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u32 reserved1;
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u32 reserved2;
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u32 d_sym[30];
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u32 reserved_padding[2];
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} __packed;
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/* AECS for decompress */
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struct aecs_decomp_table_record {
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u32 crc;
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u32 xor_checksum;
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u32 low_filter_param;
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u32 high_filter_param;
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u32 output_mod_idx;
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u32 drop_init_decomp_out_bytes;
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u32 reserved[36];
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u32 output_accum_data[2];
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u32 out_bits_valid;
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u32 bit_off_indexing;
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u32 input_accum_data[64];
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u8 size_qw[32];
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u32 decomp_state[1220];
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} __packed;
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int iaa_aecs_init_fixed(void);
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void iaa_aecs_cleanup_fixed(void);
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typedef int (*iaa_dev_comp_init_fn_t) (struct iaa_device_compression_mode *mode);
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typedef int (*iaa_dev_comp_free_fn_t) (struct iaa_device_compression_mode *mode);
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struct iaa_compression_mode {
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const char *name;
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u32 *ll_table;
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int ll_table_size;
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u32 *d_table;
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int d_table_size;
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u32 *header_table;
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int header_table_size;
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u16 gen_decomp_table_flags;
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iaa_dev_comp_init_fn_t init;
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iaa_dev_comp_free_fn_t free;
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};
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int add_iaa_compression_mode(const char *name,
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const u32 *ll_table,
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int ll_table_size,
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const u32 *d_table,
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int d_table_size,
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const u8 *header_table,
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int header_table_size,
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u16 gen_decomp_table_flags,
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iaa_dev_comp_init_fn_t init,
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iaa_dev_comp_free_fn_t free);
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void remove_iaa_compression_mode(const char *name);
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#endif
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92
drivers/crypto/intel/iaa/iaa_crypto_comp_fixed.c
Normal file
92
drivers/crypto/intel/iaa/iaa_crypto_comp_fixed.c
Normal file
@ -0,0 +1,92 @@
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// SPDX-License-Identifier: GPL-2.0
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/* Copyright(c) 2021 Intel Corporation. All rights rsvd. */
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#include "idxd.h"
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#include "iaa_crypto.h"
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/*
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* Fixed Huffman tables the IAA hardware requires to implement RFC-1951.
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*/
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static const u32 fixed_ll_sym[286] = {
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0x40030, 0x40031, 0x40032, 0x40033, 0x40034, 0x40035, 0x40036, 0x40037,
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0x40038, 0x40039, 0x4003A, 0x4003B, 0x4003C, 0x4003D, 0x4003E, 0x4003F,
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0x40040, 0x40041, 0x40042, 0x40043, 0x40044, 0x40045, 0x40046, 0x40047,
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0x40048, 0x40049, 0x4004A, 0x4004B, 0x4004C, 0x4004D, 0x4004E, 0x4004F,
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0x40050, 0x40051, 0x40052, 0x40053, 0x40054, 0x40055, 0x40056, 0x40057,
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0x40058, 0x40059, 0x4005A, 0x4005B, 0x4005C, 0x4005D, 0x4005E, 0x4005F,
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0x40060, 0x40061, 0x40062, 0x40063, 0x40064, 0x40065, 0x40066, 0x40067,
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0x40068, 0x40069, 0x4006A, 0x4006B, 0x4006C, 0x4006D, 0x4006E, 0x4006F,
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0x40070, 0x40071, 0x40072, 0x40073, 0x40074, 0x40075, 0x40076, 0x40077,
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0x40078, 0x40079, 0x4007A, 0x4007B, 0x4007C, 0x4007D, 0x4007E, 0x4007F,
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0x40080, 0x40081, 0x40082, 0x40083, 0x40084, 0x40085, 0x40086, 0x40087,
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0x40088, 0x40089, 0x4008A, 0x4008B, 0x4008C, 0x4008D, 0x4008E, 0x4008F,
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0x40090, 0x40091, 0x40092, 0x40093, 0x40094, 0x40095, 0x40096, 0x40097,
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0x40098, 0x40099, 0x4009A, 0x4009B, 0x4009C, 0x4009D, 0x4009E, 0x4009F,
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0x400A0, 0x400A1, 0x400A2, 0x400A3, 0x400A4, 0x400A5, 0x400A6, 0x400A7,
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0x400A8, 0x400A9, 0x400AA, 0x400AB, 0x400AC, 0x400AD, 0x400AE, 0x400AF,
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0x400B0, 0x400B1, 0x400B2, 0x400B3, 0x400B4, 0x400B5, 0x400B6, 0x400B7,
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0x400B8, 0x400B9, 0x400BA, 0x400BB, 0x400BC, 0x400BD, 0x400BE, 0x400BF,
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0x48190, 0x48191, 0x48192, 0x48193, 0x48194, 0x48195, 0x48196, 0x48197,
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0x48198, 0x48199, 0x4819A, 0x4819B, 0x4819C, 0x4819D, 0x4819E, 0x4819F,
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0x481A0, 0x481A1, 0x481A2, 0x481A3, 0x481A4, 0x481A5, 0x481A6, 0x481A7,
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0x481A8, 0x481A9, 0x481AA, 0x481AB, 0x481AC, 0x481AD, 0x481AE, 0x481AF,
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0x481B0, 0x481B1, 0x481B2, 0x481B3, 0x481B4, 0x481B5, 0x481B6, 0x481B7,
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0x481B8, 0x481B9, 0x481BA, 0x481BB, 0x481BC, 0x481BD, 0x481BE, 0x481BF,
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0x481C0, 0x481C1, 0x481C2, 0x481C3, 0x481C4, 0x481C5, 0x481C6, 0x481C7,
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0x481C8, 0x481C9, 0x481CA, 0x481CB, 0x481CC, 0x481CD, 0x481CE, 0x481CF,
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0x481D0, 0x481D1, 0x481D2, 0x481D3, 0x481D4, 0x481D5, 0x481D6, 0x481D7,
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0x481D8, 0x481D9, 0x481DA, 0x481DB, 0x481DC, 0x481DD, 0x481DE, 0x481DF,
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0x481E0, 0x481E1, 0x481E2, 0x481E3, 0x481E4, 0x481E5, 0x481E6, 0x481E7,
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0x481E8, 0x481E9, 0x481EA, 0x481EB, 0x481EC, 0x481ED, 0x481EE, 0x481EF,
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0x481F0, 0x481F1, 0x481F2, 0x481F3, 0x481F4, 0x481F5, 0x481F6, 0x481F7,
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0x481F8, 0x481F9, 0x481FA, 0x481FB, 0x481FC, 0x481FD, 0x481FE, 0x481FF,
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0x38000, 0x38001, 0x38002, 0x38003, 0x38004, 0x38005, 0x38006, 0x38007,
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0x38008, 0x38009, 0x3800A, 0x3800B, 0x3800C, 0x3800D, 0x3800E, 0x3800F,
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0x38010, 0x38011, 0x38012, 0x38013, 0x38014, 0x38015, 0x38016, 0x38017,
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0x400C0, 0x400C1, 0x400C2, 0x400C3, 0x400C4, 0x400C5
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};
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static const u32 fixed_d_sym[30] = {
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0x28000, 0x28001, 0x28002, 0x28003, 0x28004, 0x28005, 0x28006, 0x28007,
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0x28008, 0x28009, 0x2800A, 0x2800B, 0x2800C, 0x2800D, 0x2800E, 0x2800F,
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0x28010, 0x28011, 0x28012, 0x28013, 0x28014, 0x28015, 0x28016, 0x28017,
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0x28018, 0x28019, 0x2801A, 0x2801B, 0x2801C, 0x2801D
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};
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static int init_fixed_mode(struct iaa_device_compression_mode *mode)
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{
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struct aecs_comp_table_record *comp_table = mode->aecs_comp_table;
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u32 bfinal = 1;
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u32 offset;
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/* Configure aecs table using fixed Huffman table */
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comp_table->crc = 0;
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comp_table->xor_checksum = 0;
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offset = comp_table->num_output_accum_bits / 8;
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comp_table->output_accum[offset] = FIXED_HDR | bfinal;
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comp_table->num_output_accum_bits = FIXED_HDR_SIZE;
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return 0;
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}
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int iaa_aecs_init_fixed(void)
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{
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int ret;
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ret = add_iaa_compression_mode("fixed",
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fixed_ll_sym,
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sizeof(fixed_ll_sym),
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fixed_d_sym,
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sizeof(fixed_d_sym),
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NULL, 0, 0,
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init_fixed_mode, NULL);
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if (!ret)
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pr_debug("IAA fixed compression mode initialized\n");
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return ret;
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}
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void iaa_aecs_cleanup_fixed(void)
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{
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remove_iaa_compression_mode("fixed");
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}
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@ -66,6 +66,299 @@ static void wq_table_clear_entry(int cpu)
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static LIST_HEAD(iaa_devices);
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static DEFINE_MUTEX(iaa_devices_lock);
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static struct iaa_compression_mode *iaa_compression_modes[IAA_COMP_MODES_MAX];
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static int find_empty_iaa_compression_mode(void)
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{
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int i = -EINVAL;
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for (i = 0; i < IAA_COMP_MODES_MAX; i++) {
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if (iaa_compression_modes[i])
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continue;
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break;
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}
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return i;
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}
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static struct iaa_compression_mode *find_iaa_compression_mode(const char *name, int *idx)
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{
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struct iaa_compression_mode *mode;
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int i;
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for (i = 0; i < IAA_COMP_MODES_MAX; i++) {
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mode = iaa_compression_modes[i];
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if (!mode)
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continue;
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if (!strcmp(mode->name, name)) {
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*idx = i;
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return iaa_compression_modes[i];
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}
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}
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return NULL;
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}
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static void free_iaa_compression_mode(struct iaa_compression_mode *mode)
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{
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kfree(mode->name);
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kfree(mode->ll_table);
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kfree(mode->d_table);
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kfree(mode->header_table);
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kfree(mode);
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}
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/*
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* IAA Compression modes are defined by an ll_table, a d_table, and an
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* optional header_table. These tables are typically generated and
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* captured using statistics collected from running actual
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* compress/decompress workloads.
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*
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* A module or other kernel code can add and remove compression modes
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* with a given name using the exported @add_iaa_compression_mode()
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* and @remove_iaa_compression_mode functions.
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*
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* When a new compression mode is added, the tables are saved in a
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* global compression mode list. When IAA devices are added, a
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* per-IAA device dma mapping is created for each IAA device, for each
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* compression mode. These are the tables used to do the actual
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* compression/deccompression and are unmapped if/when the devices are
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* removed. Currently, compression modes must be added before any
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* device is added, and removed after all devices have been removed.
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*/
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/**
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* remove_iaa_compression_mode - Remove an IAA compression mode
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* @name: The name the compression mode will be known as
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*
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* Remove the IAA compression mode named @name.
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*/
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void remove_iaa_compression_mode(const char *name)
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{
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struct iaa_compression_mode *mode;
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int idx;
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mutex_lock(&iaa_devices_lock);
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if (!list_empty(&iaa_devices))
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goto out;
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mode = find_iaa_compression_mode(name, &idx);
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if (mode) {
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free_iaa_compression_mode(mode);
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iaa_compression_modes[idx] = NULL;
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}
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out:
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mutex_unlock(&iaa_devices_lock);
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}
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EXPORT_SYMBOL_GPL(remove_iaa_compression_mode);
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/**
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* add_iaa_compression_mode - Add an IAA compression mode
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* @name: The name the compression mode will be known as
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* @ll_table: The ll table
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* @ll_table_size: The ll table size in bytes
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* @d_table: The d table
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* @d_table_size: The d table size in bytes
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* @header_table: Optional header table
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* @header_table_size: Optional header table size in bytes
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* @gen_decomp_table_flags: Otional flags used to generate the decomp table
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* @init: Optional callback function to init the compression mode data
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* @free: Optional callback function to free the compression mode data
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*
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* Add a new IAA compression mode named @name.
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*
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* Returns 0 if successful, errcode otherwise.
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*/
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int add_iaa_compression_mode(const char *name,
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const u32 *ll_table,
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int ll_table_size,
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const u32 *d_table,
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int d_table_size,
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const u8 *header_table,
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int header_table_size,
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u16 gen_decomp_table_flags,
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iaa_dev_comp_init_fn_t init,
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iaa_dev_comp_free_fn_t free)
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{
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struct iaa_compression_mode *mode;
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int idx, ret = -ENOMEM;
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mutex_lock(&iaa_devices_lock);
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if (!list_empty(&iaa_devices)) {
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ret = -EBUSY;
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goto out;
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}
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mode = kzalloc(sizeof(*mode), GFP_KERNEL);
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if (!mode)
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goto out;
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mode->name = kstrdup(name, GFP_KERNEL);
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if (!mode->name)
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goto free;
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if (ll_table) {
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mode->ll_table = kzalloc(ll_table_size, GFP_KERNEL);
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if (!mode->ll_table)
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goto free;
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memcpy(mode->ll_table, ll_table, ll_table_size);
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mode->ll_table_size = ll_table_size;
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}
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if (d_table) {
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mode->d_table = kzalloc(d_table_size, GFP_KERNEL);
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if (!mode->d_table)
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goto free;
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memcpy(mode->d_table, d_table, d_table_size);
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mode->d_table_size = d_table_size;
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}
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if (header_table) {
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mode->header_table = kzalloc(header_table_size, GFP_KERNEL);
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if (!mode->header_table)
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goto free;
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memcpy(mode->header_table, header_table, header_table_size);
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mode->header_table_size = header_table_size;
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}
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mode->gen_decomp_table_flags = gen_decomp_table_flags;
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mode->init = init;
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mode->free = free;
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idx = find_empty_iaa_compression_mode();
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if (idx < 0)
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goto free;
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pr_debug("IAA compression mode %s added at idx %d\n",
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mode->name, idx);
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iaa_compression_modes[idx] = mode;
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ret = 0;
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out:
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mutex_unlock(&iaa_devices_lock);
|
||||
|
||||
return ret;
|
||||
free:
|
||||
free_iaa_compression_mode(mode);
|
||||
goto out;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(add_iaa_compression_mode);
|
||||
|
||||
static void free_device_compression_mode(struct iaa_device *iaa_device,
|
||||
struct iaa_device_compression_mode *device_mode)
|
||||
{
|
||||
size_t size = sizeof(struct aecs_comp_table_record) + IAA_AECS_ALIGN;
|
||||
struct device *dev = &iaa_device->idxd->pdev->dev;
|
||||
|
||||
kfree(device_mode->name);
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
static int init_device_compression_mode(struct iaa_device *iaa_device,
|
||||
struct iaa_compression_mode *mode,
|
||||
int idx, struct idxd_wq *wq)
|
||||
{
|
||||
size_t size = sizeof(struct aecs_comp_table_record) + IAA_AECS_ALIGN;
|
||||
struct device *dev = &iaa_device->idxd->pdev->dev;
|
||||
struct iaa_device_compression_mode *device_mode;
|
||||
int ret = -ENOMEM;
|
||||
|
||||
device_mode = kzalloc(sizeof(*device_mode), GFP_KERNEL);
|
||||
if (!device_mode)
|
||||
return -ENOMEM;
|
||||
|
||||
device_mode->name = kstrdup(mode->name, GFP_KERNEL);
|
||||
if (!device_mode->name)
|
||||
goto free;
|
||||
|
||||
device_mode->aecs_comp_table = dma_alloc_coherent(dev, size,
|
||||
&device_mode->aecs_comp_table_dma_addr, GFP_KERNEL);
|
||||
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->init) {
|
||||
ret = mode->init(device_mode);
|
||||
if (ret)
|
||||
goto free;
|
||||
}
|
||||
|
||||
/* mode index should match iaa_compression_modes idx */
|
||||
iaa_device->compression_modes[idx] = device_mode;
|
||||
|
||||
pr_debug("IAA %s compression mode initialized for iaa device %d\n",
|
||||
mode->name, iaa_device->idxd->id);
|
||||
|
||||
ret = 0;
|
||||
out:
|
||||
return ret;
|
||||
free:
|
||||
pr_debug("IAA %s compression mode initialization failed for iaa device %d\n",
|
||||
mode->name, iaa_device->idxd->id);
|
||||
|
||||
free_device_compression_mode(iaa_device, device_mode);
|
||||
goto out;
|
||||
}
|
||||
|
||||
static int init_device_compression_modes(struct iaa_device *iaa_device,
|
||||
struct idxd_wq *wq)
|
||||
{
|
||||
struct iaa_compression_mode *mode;
|
||||
int i, ret = 0;
|
||||
|
||||
for (i = 0; i < IAA_COMP_MODES_MAX; i++) {
|
||||
mode = iaa_compression_modes[i];
|
||||
if (!mode)
|
||||
continue;
|
||||
|
||||
ret = init_device_compression_mode(iaa_device, mode, i, wq);
|
||||
if (ret)
|
||||
break;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void remove_device_compression_modes(struct iaa_device *iaa_device)
|
||||
{
|
||||
struct iaa_device_compression_mode *device_mode;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < IAA_COMP_MODES_MAX; i++) {
|
||||
device_mode = iaa_device->compression_modes[i];
|
||||
if (!device_mode)
|
||||
continue;
|
||||
|
||||
free_device_compression_mode(iaa_device, device_mode);
|
||||
iaa_device->compression_modes[i] = NULL;
|
||||
if (iaa_compression_modes[i]->free)
|
||||
iaa_compression_modes[i]->free(device_mode);
|
||||
}
|
||||
}
|
||||
|
||||
static struct iaa_device *iaa_device_alloc(void)
|
||||
{
|
||||
struct iaa_device *iaa_device;
|
||||
@ -120,8 +413,21 @@ static struct iaa_device *add_iaa_device(struct idxd_device *idxd)
|
||||
return iaa_device;
|
||||
}
|
||||
|
||||
static int init_iaa_device(struct iaa_device *iaa_device, struct iaa_wq *iaa_wq)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
ret = init_device_compression_modes(iaa_device, iaa_wq->wq);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void del_iaa_device(struct iaa_device *iaa_device)
|
||||
{
|
||||
remove_device_compression_modes(iaa_device);
|
||||
|
||||
list_del(&iaa_device->list);
|
||||
|
||||
iaa_device_free(iaa_device);
|
||||
@ -276,6 +582,13 @@ static int save_iaa_wq(struct idxd_wq *wq)
|
||||
del_iaa_device(new_device);
|
||||
goto out;
|
||||
}
|
||||
|
||||
ret = init_iaa_device(new_device, new_wq);
|
||||
if (ret) {
|
||||
del_iaa_wq(new_device, new_wq->wq);
|
||||
del_iaa_device(new_device);
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
if (WARN_ON(nr_iaa == 0))
|
||||
@ -517,20 +830,32 @@ static int __init iaa_crypto_init_module(void)
|
||||
nr_nodes = num_online_nodes();
|
||||
nr_cpus_per_node = nr_cpus / nr_nodes;
|
||||
|
||||
ret = iaa_aecs_init_fixed();
|
||||
if (ret < 0) {
|
||||
pr_debug("IAA fixed compression mode init failed\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
ret = idxd_driver_register(&iaa_crypto_driver);
|
||||
if (ret) {
|
||||
pr_debug("IAA wq sub-driver registration failed\n");
|
||||
goto out;
|
||||
goto err_driver_reg;
|
||||
}
|
||||
|
||||
pr_debug("initialized\n");
|
||||
out:
|
||||
return ret;
|
||||
|
||||
err_driver_reg:
|
||||
iaa_aecs_cleanup_fixed();
|
||||
|
||||
goto out;
|
||||
}
|
||||
|
||||
static void __exit iaa_crypto_cleanup_module(void)
|
||||
{
|
||||
idxd_driver_unregister(&iaa_crypto_driver);
|
||||
iaa_aecs_cleanup_fixed();
|
||||
|
||||
pr_debug("cleaned up\n");
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user