1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */
214fa93cdSSrikanth Jampala #ifndef __NITROX_REQ_H
314fa93cdSSrikanth Jampala #define __NITROX_REQ_H
414fa93cdSSrikanth Jampala
514fa93cdSSrikanth Jampala #include <linux/dma-mapping.h>
614fa93cdSSrikanth Jampala #include <crypto/aes.h>
714fa93cdSSrikanth Jampala
814fa93cdSSrikanth Jampala #include "nitrox_dev.h"
914fa93cdSSrikanth Jampala
104bede34cSNagadheeraj, Rottela #define PENDING_SIG 0xFFFFFFFFFFFFFFFFUL
11c9613335SNagadheeraj Rottela #define PRIO 4001
124bede34cSNagadheeraj, Rottela
13ced0a170SNagadheeraj Rottela typedef void (*sereq_completion_t)(void *req, int err);
14ced0a170SNagadheeraj Rottela
1514fa93cdSSrikanth Jampala /**
1614fa93cdSSrikanth Jampala * struct gphdr - General purpose Header
1714fa93cdSSrikanth Jampala * @param0: first parameter.
1814fa93cdSSrikanth Jampala * @param1: second parameter.
1914fa93cdSSrikanth Jampala * @param2: third parameter.
2014fa93cdSSrikanth Jampala * @param3: fourth parameter.
2114fa93cdSSrikanth Jampala *
2214fa93cdSSrikanth Jampala * Params tell the iv and enc/dec data offsets.
2314fa93cdSSrikanth Jampala */
2414fa93cdSSrikanth Jampala struct gphdr {
2514fa93cdSSrikanth Jampala __be16 param0;
2614fa93cdSSrikanth Jampala __be16 param1;
2714fa93cdSSrikanth Jampala __be16 param2;
2814fa93cdSSrikanth Jampala __be16 param3;
2914fa93cdSSrikanth Jampala };
3014fa93cdSSrikanth Jampala
3114fa93cdSSrikanth Jampala /**
3214fa93cdSSrikanth Jampala * struct se_req_ctrl - SE request information.
3314fa93cdSSrikanth Jampala * @arg: Minor number of the opcode
3414fa93cdSSrikanth Jampala * @ctxc: Context control.
3514fa93cdSSrikanth Jampala * @unca: Uncertainity enabled.
3614fa93cdSSrikanth Jampala * @info: Additional information for SE cores.
3714fa93cdSSrikanth Jampala * @ctxl: Context length in bytes.
3814fa93cdSSrikanth Jampala * @uddl: User defined data length
3914fa93cdSSrikanth Jampala */
4014fa93cdSSrikanth Jampala union se_req_ctrl {
4114fa93cdSSrikanth Jampala u64 value;
4214fa93cdSSrikanth Jampala struct {
4314fa93cdSSrikanth Jampala u64 raz : 22;
4414fa93cdSSrikanth Jampala u64 arg : 8;
4514fa93cdSSrikanth Jampala u64 ctxc : 2;
4614fa93cdSSrikanth Jampala u64 unca : 1;
4714fa93cdSSrikanth Jampala u64 info : 3;
4814fa93cdSSrikanth Jampala u64 unc : 8;
4914fa93cdSSrikanth Jampala u64 ctxl : 12;
5014fa93cdSSrikanth Jampala u64 uddl : 8;
5114fa93cdSSrikanth Jampala } s;
5214fa93cdSSrikanth Jampala };
5314fa93cdSSrikanth Jampala
5414fa93cdSSrikanth Jampala #define MAX_IV_LEN 16
5514fa93cdSSrikanth Jampala
5614fa93cdSSrikanth Jampala /**
5714fa93cdSSrikanth Jampala * struct se_crypto_request - SE crypto request structure.
5814fa93cdSSrikanth Jampala * @opcode: Request opcode (enc/dec)
5914fa93cdSSrikanth Jampala * @flags: flags from crypto subsystem
6014fa93cdSSrikanth Jampala * @ctx_handle: Crypto context handle.
6114fa93cdSSrikanth Jampala * @gph: GP Header
6214fa93cdSSrikanth Jampala * @ctrl: Request Information.
634bede34cSNagadheeraj, Rottela * @orh: ORH address
644bede34cSNagadheeraj, Rottela * @comp: completion address
654bede34cSNagadheeraj, Rottela * @src: Input sglist
664bede34cSNagadheeraj, Rottela * @dst: Output sglist
6714fa93cdSSrikanth Jampala */
6814fa93cdSSrikanth Jampala struct se_crypto_request {
6914fa93cdSSrikanth Jampala u8 opcode;
7014fa93cdSSrikanth Jampala gfp_t gfp;
7114fa93cdSSrikanth Jampala u32 flags;
7214fa93cdSSrikanth Jampala u64 ctx_handle;
7314fa93cdSSrikanth Jampala
7414fa93cdSSrikanth Jampala struct gphdr gph;
7514fa93cdSSrikanth Jampala union se_req_ctrl ctrl;
764bede34cSNagadheeraj, Rottela u64 *orh;
774bede34cSNagadheeraj, Rottela u64 *comp;
7814fa93cdSSrikanth Jampala
7914fa93cdSSrikanth Jampala struct scatterlist *src;
8014fa93cdSSrikanth Jampala struct scatterlist *dst;
8114fa93cdSSrikanth Jampala };
8214fa93cdSSrikanth Jampala
8314fa93cdSSrikanth Jampala /* Crypto opcodes */
8414fa93cdSSrikanth Jampala #define FLEXI_CRYPTO_ENCRYPT_HMAC 0x33
8514fa93cdSSrikanth Jampala #define ENCRYPT 0
8614fa93cdSSrikanth Jampala #define DECRYPT 1
8714fa93cdSSrikanth Jampala
8814fa93cdSSrikanth Jampala /* IV from context */
8914fa93cdSSrikanth Jampala #define IV_FROM_CTX 0
9014fa93cdSSrikanth Jampala /* IV from Input data */
9114fa93cdSSrikanth Jampala #define IV_FROM_DPTR 1
9214fa93cdSSrikanth Jampala
9314fa93cdSSrikanth Jampala /**
9414fa93cdSSrikanth Jampala * cipher opcodes for firmware
9514fa93cdSSrikanth Jampala */
9614fa93cdSSrikanth Jampala enum flexi_cipher {
9714fa93cdSSrikanth Jampala CIPHER_NULL = 0,
9814fa93cdSSrikanth Jampala CIPHER_3DES_CBC,
9914fa93cdSSrikanth Jampala CIPHER_3DES_ECB,
10014fa93cdSSrikanth Jampala CIPHER_AES_CBC,
10114fa93cdSSrikanth Jampala CIPHER_AES_ECB,
10214fa93cdSSrikanth Jampala CIPHER_AES_CFB,
10314fa93cdSSrikanth Jampala CIPHER_AES_CTR,
10414fa93cdSSrikanth Jampala CIPHER_AES_GCM,
10514fa93cdSSrikanth Jampala CIPHER_AES_XTS,
10614fa93cdSSrikanth Jampala CIPHER_AES_CCM,
10714fa93cdSSrikanth Jampala CIPHER_AES_CBC_CTS,
10814fa93cdSSrikanth Jampala CIPHER_AES_ECB_CTS,
10914fa93cdSSrikanth Jampala CIPHER_INVALID
11014fa93cdSSrikanth Jampala };
11114fa93cdSSrikanth Jampala
112c9613335SNagadheeraj Rottela enum flexi_auth {
113c9613335SNagadheeraj Rottela AUTH_NULL = 0,
114c9613335SNagadheeraj Rottela AUTH_MD5,
115c9613335SNagadheeraj Rottela AUTH_SHA1,
116c9613335SNagadheeraj Rottela AUTH_SHA2_SHA224,
117c9613335SNagadheeraj Rottela AUTH_SHA2_SHA256,
118c9613335SNagadheeraj Rottela AUTH_SHA2_SHA384,
119c9613335SNagadheeraj Rottela AUTH_SHA2_SHA512,
120c9613335SNagadheeraj Rottela AUTH_GMAC,
121c9613335SNagadheeraj Rottela AUTH_INVALID
122c9613335SNagadheeraj Rottela };
123c9613335SNagadheeraj Rottela
12414fa93cdSSrikanth Jampala /**
12514fa93cdSSrikanth Jampala * struct crypto_keys - Crypto keys
12614fa93cdSSrikanth Jampala * @key: Encryption key or KEY1 for AES-XTS
12714fa93cdSSrikanth Jampala * @iv: Encryption IV or Tweak for AES-XTS
12814fa93cdSSrikanth Jampala */
12914fa93cdSSrikanth Jampala struct crypto_keys {
13014fa93cdSSrikanth Jampala union {
13114fa93cdSSrikanth Jampala u8 key[AES_MAX_KEY_SIZE];
13214fa93cdSSrikanth Jampala u8 key1[AES_MAX_KEY_SIZE];
13314fa93cdSSrikanth Jampala } u;
13414fa93cdSSrikanth Jampala u8 iv[AES_BLOCK_SIZE];
13514fa93cdSSrikanth Jampala };
13614fa93cdSSrikanth Jampala
13714fa93cdSSrikanth Jampala /**
13814fa93cdSSrikanth Jampala * struct auth_keys - Authentication keys
13914fa93cdSSrikanth Jampala * @ipad: IPAD or KEY2 for AES-XTS
14014fa93cdSSrikanth Jampala * @opad: OPAD or AUTH KEY if auth_input_type = 1
14114fa93cdSSrikanth Jampala */
14214fa93cdSSrikanth Jampala struct auth_keys {
14314fa93cdSSrikanth Jampala union {
14414fa93cdSSrikanth Jampala u8 ipad[64];
14514fa93cdSSrikanth Jampala u8 key2[64];
14614fa93cdSSrikanth Jampala } u;
14714fa93cdSSrikanth Jampala u8 opad[64];
14814fa93cdSSrikanth Jampala };
14914fa93cdSSrikanth Jampala
150c9613335SNagadheeraj Rottela union fc_ctx_flags {
151c9613335SNagadheeraj Rottela __be64 f;
152cd078cb6SHerbert Xu u64 fu;
15314fa93cdSSrikanth Jampala struct {
15414fa93cdSSrikanth Jampala #if defined(__BIG_ENDIAN_BITFIELD)
15514fa93cdSSrikanth Jampala u64 cipher_type : 4;
15614fa93cdSSrikanth Jampala u64 reserved_59 : 1;
15714fa93cdSSrikanth Jampala u64 aes_keylen : 2;
15814fa93cdSSrikanth Jampala u64 iv_source : 1;
15914fa93cdSSrikanth Jampala u64 hash_type : 4;
16014fa93cdSSrikanth Jampala u64 reserved_49_51 : 3;
16114fa93cdSSrikanth Jampala u64 auth_input_type: 1;
16214fa93cdSSrikanth Jampala u64 mac_len : 8;
16314fa93cdSSrikanth Jampala u64 reserved_0_39 : 40;
16414fa93cdSSrikanth Jampala #else
16514fa93cdSSrikanth Jampala u64 reserved_0_39 : 40;
16614fa93cdSSrikanth Jampala u64 mac_len : 8;
16714fa93cdSSrikanth Jampala u64 auth_input_type: 1;
16814fa93cdSSrikanth Jampala u64 reserved_49_51 : 3;
16914fa93cdSSrikanth Jampala u64 hash_type : 4;
17014fa93cdSSrikanth Jampala u64 iv_source : 1;
17114fa93cdSSrikanth Jampala u64 aes_keylen : 2;
17214fa93cdSSrikanth Jampala u64 reserved_59 : 1;
17314fa93cdSSrikanth Jampala u64 cipher_type : 4;
17414fa93cdSSrikanth Jampala #endif
17514fa93cdSSrikanth Jampala } w0;
17614fa93cdSSrikanth Jampala };
177c9613335SNagadheeraj Rottela /**
178c9613335SNagadheeraj Rottela * struct flexi_crypto_context - Crypto context
179c9613335SNagadheeraj Rottela * @cipher_type: Encryption cipher type
180c9613335SNagadheeraj Rottela * @aes_keylen: AES key length
181c9613335SNagadheeraj Rottela * @iv_source: Encryption IV source
182c9613335SNagadheeraj Rottela * @hash_type: Authentication type
183c9613335SNagadheeraj Rottela * @auth_input_type: Authentication input type
184c9613335SNagadheeraj Rottela * 1 - Authentication IV and KEY, microcode calculates OPAD/IPAD
185c9613335SNagadheeraj Rottela * 0 - Authentication OPAD/IPAD
186c9613335SNagadheeraj Rottela * @mac_len: mac length
187c9613335SNagadheeraj Rottela * @crypto: Crypto keys
188c9613335SNagadheeraj Rottela * @auth: Authentication keys
189c9613335SNagadheeraj Rottela */
190c9613335SNagadheeraj Rottela struct flexi_crypto_context {
191c9613335SNagadheeraj Rottela union fc_ctx_flags flags;
19214fa93cdSSrikanth Jampala struct crypto_keys crypto;
19314fa93cdSSrikanth Jampala struct auth_keys auth;
19414fa93cdSSrikanth Jampala };
19514fa93cdSSrikanth Jampala
1967172122bSWenwen Wang struct crypto_ctx_hdr {
1977172122bSWenwen Wang struct dma_pool *pool;
1987172122bSWenwen Wang dma_addr_t dma;
1997172122bSWenwen Wang void *vaddr;
2007172122bSWenwen Wang };
2017172122bSWenwen Wang
20214fa93cdSSrikanth Jampala struct nitrox_crypto_ctx {
20314fa93cdSSrikanth Jampala struct nitrox_device *ndev;
20414fa93cdSSrikanth Jampala union {
20514fa93cdSSrikanth Jampala u64 ctx_handle;
20614fa93cdSSrikanth Jampala struct flexi_crypto_context *fctx;
20714fa93cdSSrikanth Jampala } u;
2087172122bSWenwen Wang struct crypto_ctx_hdr *chdr;
209ced0a170SNagadheeraj Rottela sereq_completion_t callback;
21014fa93cdSSrikanth Jampala };
21114fa93cdSSrikanth Jampala
21214fa93cdSSrikanth Jampala struct nitrox_kcrypt_request {
21314fa93cdSSrikanth Jampala struct se_crypto_request creq;
2144bede34cSNagadheeraj, Rottela u8 *src;
2154bede34cSNagadheeraj, Rottela u8 *dst;
216ced0a170SNagadheeraj Rottela u8 *iv_out;
21714fa93cdSSrikanth Jampala };
21814fa93cdSSrikanth Jampala
21914fa93cdSSrikanth Jampala /**
2208a3719a5SNagadheeraj Rottela * struct nitrox_aead_rctx - AEAD request context
2218a3719a5SNagadheeraj Rottela * @nkreq: Base request context
2228a3719a5SNagadheeraj Rottela * @cryptlen: Encryption/Decryption data length
2238a3719a5SNagadheeraj Rottela * @assoclen: AAD length
2248a3719a5SNagadheeraj Rottela * @srclen: Input buffer length
2258a3719a5SNagadheeraj Rottela * @dstlen: Output buffer length
2268a3719a5SNagadheeraj Rottela * @iv: IV data
2278a3719a5SNagadheeraj Rottela * @ivsize: IV data length
2288a3719a5SNagadheeraj Rottela * @flags: AEAD req flags
2298a3719a5SNagadheeraj Rottela * @ctx_handle: Device context handle
2308a3719a5SNagadheeraj Rottela * @src: Source sglist
2318a3719a5SNagadheeraj Rottela * @dst: Destination sglist
2328a3719a5SNagadheeraj Rottela * @ctrl_arg: Identifies the request type (ENCRYPT/DECRYPT)
2338a3719a5SNagadheeraj Rottela */
2348a3719a5SNagadheeraj Rottela struct nitrox_aead_rctx {
2358a3719a5SNagadheeraj Rottela struct nitrox_kcrypt_request nkreq;
2368a3719a5SNagadheeraj Rottela unsigned int cryptlen;
2378a3719a5SNagadheeraj Rottela unsigned int assoclen;
2388a3719a5SNagadheeraj Rottela unsigned int srclen;
2398a3719a5SNagadheeraj Rottela unsigned int dstlen;
2408a3719a5SNagadheeraj Rottela u8 *iv;
2418a3719a5SNagadheeraj Rottela int ivsize;
2428a3719a5SNagadheeraj Rottela u32 flags;
2438a3719a5SNagadheeraj Rottela u64 ctx_handle;
2448a3719a5SNagadheeraj Rottela struct scatterlist *src;
2458a3719a5SNagadheeraj Rottela struct scatterlist *dst;
2468a3719a5SNagadheeraj Rottela u8 ctrl_arg;
2478a3719a5SNagadheeraj Rottela };
2488a3719a5SNagadheeraj Rottela
2498a3719a5SNagadheeraj Rottela /**
2508a3719a5SNagadheeraj Rottela * struct nitrox_rfc4106_rctx - rfc4106 cipher request context
2518a3719a5SNagadheeraj Rottela * @base: AEAD request context
2528a3719a5SNagadheeraj Rottela * @src: Source sglist
2538a3719a5SNagadheeraj Rottela * @dst: Destination sglist
2548a3719a5SNagadheeraj Rottela * @assoc: AAD
2558a3719a5SNagadheeraj Rottela */
2568a3719a5SNagadheeraj Rottela struct nitrox_rfc4106_rctx {
2578a3719a5SNagadheeraj Rottela struct nitrox_aead_rctx base;
2588a3719a5SNagadheeraj Rottela struct scatterlist src[3];
2598a3719a5SNagadheeraj Rottela struct scatterlist dst[3];
2608a3719a5SNagadheeraj Rottela u8 assoc[20];
2618a3719a5SNagadheeraj Rottela };
2628a3719a5SNagadheeraj Rottela
2638a3719a5SNagadheeraj Rottela /**
26414fa93cdSSrikanth Jampala * struct pkt_instr_hdr - Packet Instruction Header
26514fa93cdSSrikanth Jampala * @g: Gather used
26614fa93cdSSrikanth Jampala * When [G] is set and [GSZ] != 0, the instruction is
26714fa93cdSSrikanth Jampala * indirect gather instruction.
26814fa93cdSSrikanth Jampala * When [G] is set and [GSZ] = 0, the instruction is
26914fa93cdSSrikanth Jampala * direct gather instruction.
27014fa93cdSSrikanth Jampala * @gsz: Number of pointers in the indirect gather list
27114fa93cdSSrikanth Jampala * @ihi: When set hardware duplicates the 1st 8 bytes of pkt_instr_hdr
27214fa93cdSSrikanth Jampala * and adds them to the packet after the pkt_instr_hdr but before any UDD
27314fa93cdSSrikanth Jampala * @ssz: Not used by the input hardware. But can become slc_store_int[SSZ]
27414fa93cdSSrikanth Jampala * when [IHI] is set.
27514fa93cdSSrikanth Jampala * @fsz: The number of front data bytes directly included in the
27614fa93cdSSrikanth Jampala * PCIe instruction.
27714fa93cdSSrikanth Jampala * @tlen: The length of the input packet in bytes, include:
27814fa93cdSSrikanth Jampala * - 16B pkt_hdr
27914fa93cdSSrikanth Jampala * - Inline context bytes if any,
28014fa93cdSSrikanth Jampala * - UDD if any,
28114fa93cdSSrikanth Jampala * - packet payload bytes
28214fa93cdSSrikanth Jampala */
28314fa93cdSSrikanth Jampala union pkt_instr_hdr {
284cd078cb6SHerbert Xu __be64 bev;
28514fa93cdSSrikanth Jampala u64 value;
28614fa93cdSSrikanth Jampala struct {
28714fa93cdSSrikanth Jampala #if defined(__BIG_ENDIAN_BITFIELD)
28814fa93cdSSrikanth Jampala u64 raz_48_63 : 16;
28914fa93cdSSrikanth Jampala u64 g : 1;
29014fa93cdSSrikanth Jampala u64 gsz : 7;
29114fa93cdSSrikanth Jampala u64 ihi : 1;
29214fa93cdSSrikanth Jampala u64 ssz : 7;
29314fa93cdSSrikanth Jampala u64 raz_30_31 : 2;
29414fa93cdSSrikanth Jampala u64 fsz : 6;
29514fa93cdSSrikanth Jampala u64 raz_16_23 : 8;
29614fa93cdSSrikanth Jampala u64 tlen : 16;
29714fa93cdSSrikanth Jampala #else
29814fa93cdSSrikanth Jampala u64 tlen : 16;
29914fa93cdSSrikanth Jampala u64 raz_16_23 : 8;
30014fa93cdSSrikanth Jampala u64 fsz : 6;
30114fa93cdSSrikanth Jampala u64 raz_30_31 : 2;
30214fa93cdSSrikanth Jampala u64 ssz : 7;
30314fa93cdSSrikanth Jampala u64 ihi : 1;
30414fa93cdSSrikanth Jampala u64 gsz : 7;
30514fa93cdSSrikanth Jampala u64 g : 1;
30614fa93cdSSrikanth Jampala u64 raz_48_63 : 16;
30714fa93cdSSrikanth Jampala #endif
30814fa93cdSSrikanth Jampala } s;
30914fa93cdSSrikanth Jampala };
31014fa93cdSSrikanth Jampala
31114fa93cdSSrikanth Jampala /**
31214fa93cdSSrikanth Jampala * struct pkt_hdr - Packet Input Header
31314fa93cdSSrikanth Jampala * @opcode: Request opcode (Major)
31414fa93cdSSrikanth Jampala * @arg: Request opcode (Minor)
31514fa93cdSSrikanth Jampala * @ctxc: Context control.
31614fa93cdSSrikanth Jampala * @unca: When set [UNC] is the uncertainty count for an input packet.
31714fa93cdSSrikanth Jampala * The hardware uses uncertainty counts to predict
31814fa93cdSSrikanth Jampala * output buffer use and avoid deadlock.
31914fa93cdSSrikanth Jampala * @info: Not used by input hardware. Available for use
32014fa93cdSSrikanth Jampala * during SE processing.
32114fa93cdSSrikanth Jampala * @destport: The expected destination port/ring/channel for the packet.
32214fa93cdSSrikanth Jampala * @unc: Uncertainty count for an input packet.
32314fa93cdSSrikanth Jampala * @grp: SE group that will process the input packet.
32414fa93cdSSrikanth Jampala * @ctxl: Context Length in 64-bit words.
32514fa93cdSSrikanth Jampala * @uddl: User-defined data (UDD) length in bytes.
32614fa93cdSSrikanth Jampala * @ctxp: Context pointer. CTXP<63,2:0> must be zero in all cases.
32714fa93cdSSrikanth Jampala */
32814fa93cdSSrikanth Jampala union pkt_hdr {
329cd078cb6SHerbert Xu __be64 bev[2];
33014fa93cdSSrikanth Jampala u64 value[2];
33114fa93cdSSrikanth Jampala struct {
33214fa93cdSSrikanth Jampala #if defined(__BIG_ENDIAN_BITFIELD)
33314fa93cdSSrikanth Jampala u64 opcode : 8;
33414fa93cdSSrikanth Jampala u64 arg : 8;
33514fa93cdSSrikanth Jampala u64 ctxc : 2;
33614fa93cdSSrikanth Jampala u64 unca : 1;
33714fa93cdSSrikanth Jampala u64 raz_44 : 1;
33814fa93cdSSrikanth Jampala u64 info : 3;
33914fa93cdSSrikanth Jampala u64 destport : 9;
34014fa93cdSSrikanth Jampala u64 unc : 8;
34114fa93cdSSrikanth Jampala u64 raz_19_23 : 5;
34214fa93cdSSrikanth Jampala u64 grp : 3;
34314fa93cdSSrikanth Jampala u64 raz_15 : 1;
34414fa93cdSSrikanth Jampala u64 ctxl : 7;
34514fa93cdSSrikanth Jampala u64 uddl : 8;
34614fa93cdSSrikanth Jampala #else
34714fa93cdSSrikanth Jampala u64 uddl : 8;
34814fa93cdSSrikanth Jampala u64 ctxl : 7;
34914fa93cdSSrikanth Jampala u64 raz_15 : 1;
35014fa93cdSSrikanth Jampala u64 grp : 3;
35114fa93cdSSrikanth Jampala u64 raz_19_23 : 5;
35214fa93cdSSrikanth Jampala u64 unc : 8;
35314fa93cdSSrikanth Jampala u64 destport : 9;
35414fa93cdSSrikanth Jampala u64 info : 3;
35514fa93cdSSrikanth Jampala u64 raz_44 : 1;
35614fa93cdSSrikanth Jampala u64 unca : 1;
35714fa93cdSSrikanth Jampala u64 ctxc : 2;
35814fa93cdSSrikanth Jampala u64 arg : 8;
35914fa93cdSSrikanth Jampala u64 opcode : 8;
36014fa93cdSSrikanth Jampala #endif
36114fa93cdSSrikanth Jampala __be64 ctxp;
36214fa93cdSSrikanth Jampala } s;
36314fa93cdSSrikanth Jampala };
36414fa93cdSSrikanth Jampala
36514fa93cdSSrikanth Jampala /**
36614fa93cdSSrikanth Jampala * struct slc_store_info - Solicited Paceket Output Store Information.
36714fa93cdSSrikanth Jampala * @ssz: The number of scatterlist pointers for the solicited output port
36814fa93cdSSrikanth Jampala * packet.
36914fa93cdSSrikanth Jampala * @rptr: The result pointer for the solicited output port packet.
37014fa93cdSSrikanth Jampala * If [SSZ]=0, [RPTR] must point directly to a buffer on the remote
37114fa93cdSSrikanth Jampala * host that is large enough to hold the entire output packet.
37214fa93cdSSrikanth Jampala * If [SSZ]!=0, [RPTR] must point to an array of ([SSZ]+3)/4
37314fa93cdSSrikanth Jampala * sglist components at [RPTR] on the remote host.
37414fa93cdSSrikanth Jampala */
37514fa93cdSSrikanth Jampala union slc_store_info {
376cd078cb6SHerbert Xu __be64 bev[2];
37714fa93cdSSrikanth Jampala u64 value[2];
37814fa93cdSSrikanth Jampala struct {
37914fa93cdSSrikanth Jampala #if defined(__BIG_ENDIAN_BITFIELD)
38014fa93cdSSrikanth Jampala u64 raz_39_63 : 25;
38114fa93cdSSrikanth Jampala u64 ssz : 7;
38214fa93cdSSrikanth Jampala u64 raz_0_31 : 32;
38314fa93cdSSrikanth Jampala #else
38414fa93cdSSrikanth Jampala u64 raz_0_31 : 32;
38514fa93cdSSrikanth Jampala u64 ssz : 7;
38614fa93cdSSrikanth Jampala u64 raz_39_63 : 25;
38714fa93cdSSrikanth Jampala #endif
38814fa93cdSSrikanth Jampala __be64 rptr;
38914fa93cdSSrikanth Jampala } s;
39014fa93cdSSrikanth Jampala };
39114fa93cdSSrikanth Jampala
39214fa93cdSSrikanth Jampala /**
39314fa93cdSSrikanth Jampala * struct nps_pkt_instr - NPS Packet Instruction of SE cores.
39414fa93cdSSrikanth Jampala * @dptr0 : Input pointer points to buffer in remote host.
39514fa93cdSSrikanth Jampala * @ih: Packet Instruction Header (8 bytes)
39614fa93cdSSrikanth Jampala * @irh: Packet Input Header (16 bytes)
39714fa93cdSSrikanth Jampala * @slc: Solicited Packet Output Store Information (16 bytes)
39814fa93cdSSrikanth Jampala * @fdata: Front data
39914fa93cdSSrikanth Jampala *
40014fa93cdSSrikanth Jampala * 64-Byte Instruction Format
40114fa93cdSSrikanth Jampala */
40214fa93cdSSrikanth Jampala struct nps_pkt_instr {
40314fa93cdSSrikanth Jampala __be64 dptr0;
40414fa93cdSSrikanth Jampala union pkt_instr_hdr ih;
40514fa93cdSSrikanth Jampala union pkt_hdr irh;
40614fa93cdSSrikanth Jampala union slc_store_info slc;
40714fa93cdSSrikanth Jampala u64 fdata[2];
40814fa93cdSSrikanth Jampala };
40914fa93cdSSrikanth Jampala
41014fa93cdSSrikanth Jampala /**
411b31c17c8SPhani Kiran Hemadri * struct aqmq_command_s - The 32 byte command for AE processing.
412b31c17c8SPhani Kiran Hemadri * @opcode: Request opcode
413b31c17c8SPhani Kiran Hemadri * @param1: Request control parameter 1
414b31c17c8SPhani Kiran Hemadri * @param2: Request control parameter 2
415b31c17c8SPhani Kiran Hemadri * @dlen: Input length
416b31c17c8SPhani Kiran Hemadri * @dptr: Input pointer points to buffer in remote host
417b31c17c8SPhani Kiran Hemadri * @rptr: Result pointer points to buffer in remote host
418b31c17c8SPhani Kiran Hemadri * @grp: AQM Group (0..7)
419b31c17c8SPhani Kiran Hemadri * @cptr: Context pointer
420b31c17c8SPhani Kiran Hemadri */
421b31c17c8SPhani Kiran Hemadri struct aqmq_command_s {
422b31c17c8SPhani Kiran Hemadri __be16 opcode;
423b31c17c8SPhani Kiran Hemadri __be16 param1;
424b31c17c8SPhani Kiran Hemadri __be16 param2;
425b31c17c8SPhani Kiran Hemadri __be16 dlen;
426b31c17c8SPhani Kiran Hemadri __be64 dptr;
427b31c17c8SPhani Kiran Hemadri __be64 rptr;
428b31c17c8SPhani Kiran Hemadri union {
429b31c17c8SPhani Kiran Hemadri __be64 word3;
430b31c17c8SPhani Kiran Hemadri #if defined(__BIG_ENDIAN_BITFIELD)
431b31c17c8SPhani Kiran Hemadri u64 grp : 3;
432b31c17c8SPhani Kiran Hemadri u64 cptr : 61;
433b31c17c8SPhani Kiran Hemadri #else
434b31c17c8SPhani Kiran Hemadri u64 cptr : 61;
435b31c17c8SPhani Kiran Hemadri u64 grp : 3;
436b31c17c8SPhani Kiran Hemadri #endif
437b31c17c8SPhani Kiran Hemadri };
438b31c17c8SPhani Kiran Hemadri };
439b31c17c8SPhani Kiran Hemadri
440b31c17c8SPhani Kiran Hemadri /**
44114fa93cdSSrikanth Jampala * struct ctx_hdr - Book keeping data about the crypto context
44214fa93cdSSrikanth Jampala * @pool: Pool used to allocate crypto context
443*4ba31cddSCorentin Labbe * @dma: Base DMA address of the crypto context
44414fa93cdSSrikanth Jampala * @ctx_dma: Actual usable crypto context for NITROX
44514fa93cdSSrikanth Jampala */
44614fa93cdSSrikanth Jampala struct ctx_hdr {
44714fa93cdSSrikanth Jampala struct dma_pool *pool;
44814fa93cdSSrikanth Jampala dma_addr_t dma;
44914fa93cdSSrikanth Jampala dma_addr_t ctx_dma;
45014fa93cdSSrikanth Jampala };
45114fa93cdSSrikanth Jampala
45214fa93cdSSrikanth Jampala /*
45314fa93cdSSrikanth Jampala * struct sglist_component - SG list component format
45414fa93cdSSrikanth Jampala * @len0: The number of bytes at [PTR0] on the remote host.
45514fa93cdSSrikanth Jampala * @len1: The number of bytes at [PTR1] on the remote host.
45614fa93cdSSrikanth Jampala * @len2: The number of bytes at [PTR2] on the remote host.
45714fa93cdSSrikanth Jampala * @len3: The number of bytes at [PTR3] on the remote host.
45814fa93cdSSrikanth Jampala * @dma0: First pointer point to buffer in remote host.
45914fa93cdSSrikanth Jampala * @dma1: Second pointer point to buffer in remote host.
46014fa93cdSSrikanth Jampala * @dma2: Third pointer point to buffer in remote host.
46114fa93cdSSrikanth Jampala * @dma3: Fourth pointer point to buffer in remote host.
46214fa93cdSSrikanth Jampala */
46314fa93cdSSrikanth Jampala struct nitrox_sgcomp {
46414fa93cdSSrikanth Jampala __be16 len[4];
46514fa93cdSSrikanth Jampala __be64 dma[4];
46614fa93cdSSrikanth Jampala };
46714fa93cdSSrikanth Jampala
46814fa93cdSSrikanth Jampala /*
46914fa93cdSSrikanth Jampala * strutct nitrox_sgtable - SG list information
4704bede34cSNagadheeraj, Rottela * @sgmap_cnt: Number of buffers mapped
47114fa93cdSSrikanth Jampala * @total_bytes: Total bytes in sglist.
4724bede34cSNagadheeraj, Rottela * @sgcomp_len: Total sglist components length.
4734bede34cSNagadheeraj, Rottela * @sgcomp_dma: DMA address of sglist component.
4744bede34cSNagadheeraj, Rottela * @sg: crypto request buffer.
47514fa93cdSSrikanth Jampala * @sgcomp: sglist component for NITROX.
47614fa93cdSSrikanth Jampala */
47714fa93cdSSrikanth Jampala struct nitrox_sgtable {
4784bede34cSNagadheeraj, Rottela u8 sgmap_cnt;
47914fa93cdSSrikanth Jampala u16 total_bytes;
4804bede34cSNagadheeraj, Rottela u32 sgcomp_len;
4814bede34cSNagadheeraj, Rottela dma_addr_t sgcomp_dma;
4824bede34cSNagadheeraj, Rottela struct scatterlist *sg;
48314fa93cdSSrikanth Jampala struct nitrox_sgcomp *sgcomp;
48414fa93cdSSrikanth Jampala };
48514fa93cdSSrikanth Jampala
48614fa93cdSSrikanth Jampala /* Response Header Length */
48714fa93cdSSrikanth Jampala #define ORH_HLEN 8
48814fa93cdSSrikanth Jampala /* Completion bytes Length */
48914fa93cdSSrikanth Jampala #define COMP_HLEN 8
49014fa93cdSSrikanth Jampala
49114fa93cdSSrikanth Jampala struct resp_hdr {
4924bede34cSNagadheeraj, Rottela u64 *orh;
4934bede34cSNagadheeraj, Rottela u64 *completion;
49414fa93cdSSrikanth Jampala };
49514fa93cdSSrikanth Jampala
496c9613335SNagadheeraj Rottela typedef void (*completion_t)(void *arg, int err);
49714fa93cdSSrikanth Jampala
49814fa93cdSSrikanth Jampala /**
49914fa93cdSSrikanth Jampala * struct nitrox_softreq - Represents the NIROX Request.
50014fa93cdSSrikanth Jampala * @response: response list entry
50114fa93cdSSrikanth Jampala * @backlog: Backlog list entry
50214fa93cdSSrikanth Jampala * @ndev: Device used to submit the request
50314fa93cdSSrikanth Jampala * @cmdq: Command queue for submission
50414fa93cdSSrikanth Jampala * @resp: Response headers
50514fa93cdSSrikanth Jampala * @instr: 64B instruction
50614fa93cdSSrikanth Jampala * @in: SG table for input
50714fa93cdSSrikanth Jampala * @out SG table for output
50814fa93cdSSrikanth Jampala * @tstamp: Request submitted time in jiffies
50914fa93cdSSrikanth Jampala * @callback: callback after request completion/timeout
51014fa93cdSSrikanth Jampala * @cb_arg: callback argument
51114fa93cdSSrikanth Jampala */
51214fa93cdSSrikanth Jampala struct nitrox_softreq {
51314fa93cdSSrikanth Jampala struct list_head response;
51414fa93cdSSrikanth Jampala struct list_head backlog;
51514fa93cdSSrikanth Jampala
51614fa93cdSSrikanth Jampala u32 flags;
51714fa93cdSSrikanth Jampala gfp_t gfp;
51814fa93cdSSrikanth Jampala atomic_t status;
51914fa93cdSSrikanth Jampala
52014fa93cdSSrikanth Jampala struct nitrox_device *ndev;
52114fa93cdSSrikanth Jampala struct nitrox_cmdq *cmdq;
52214fa93cdSSrikanth Jampala
52314fa93cdSSrikanth Jampala struct nps_pkt_instr instr;
52414fa93cdSSrikanth Jampala struct resp_hdr resp;
52514fa93cdSSrikanth Jampala struct nitrox_sgtable in;
52614fa93cdSSrikanth Jampala struct nitrox_sgtable out;
52714fa93cdSSrikanth Jampala
52814fa93cdSSrikanth Jampala unsigned long tstamp;
52914fa93cdSSrikanth Jampala
53014fa93cdSSrikanth Jampala completion_t callback;
531c9613335SNagadheeraj Rottela void *cb_arg;
53214fa93cdSSrikanth Jampala };
53314fa93cdSSrikanth Jampala
flexi_aes_keylen(int keylen)534c9613335SNagadheeraj Rottela static inline int flexi_aes_keylen(int keylen)
535c9613335SNagadheeraj Rottela {
536c9613335SNagadheeraj Rottela int aes_keylen;
537c9613335SNagadheeraj Rottela
538c9613335SNagadheeraj Rottela switch (keylen) {
539c9613335SNagadheeraj Rottela case AES_KEYSIZE_128:
540c9613335SNagadheeraj Rottela aes_keylen = 1;
541c9613335SNagadheeraj Rottela break;
542c9613335SNagadheeraj Rottela case AES_KEYSIZE_192:
543c9613335SNagadheeraj Rottela aes_keylen = 2;
544c9613335SNagadheeraj Rottela break;
545c9613335SNagadheeraj Rottela case AES_KEYSIZE_256:
546c9613335SNagadheeraj Rottela aes_keylen = 3;
547c9613335SNagadheeraj Rottela break;
548c9613335SNagadheeraj Rottela default:
549c9613335SNagadheeraj Rottela aes_keylen = -EINVAL;
550c9613335SNagadheeraj Rottela break;
551c9613335SNagadheeraj Rottela }
552c9613335SNagadheeraj Rottela return aes_keylen;
553c9613335SNagadheeraj Rottela }
554c9613335SNagadheeraj Rottela
alloc_req_buf(int nents,int extralen,gfp_t gfp)5554bede34cSNagadheeraj, Rottela static inline void *alloc_req_buf(int nents, int extralen, gfp_t gfp)
5564bede34cSNagadheeraj, Rottela {
5574bede34cSNagadheeraj, Rottela size_t size;
5584bede34cSNagadheeraj, Rottela
5594bede34cSNagadheeraj, Rottela size = sizeof(struct scatterlist) * nents;
5604bede34cSNagadheeraj, Rottela size += extralen;
5614bede34cSNagadheeraj, Rottela
5624bede34cSNagadheeraj, Rottela return kzalloc(size, gfp);
5634bede34cSNagadheeraj, Rottela }
5644bede34cSNagadheeraj, Rottela
565c9613335SNagadheeraj Rottela /**
566c9613335SNagadheeraj Rottela * create_single_sg - Point SG entry to the data
567c9613335SNagadheeraj Rottela * @sg: Destination SG list
568c9613335SNagadheeraj Rottela * @buf: Data
569c9613335SNagadheeraj Rottela * @buflen: Data length
570c9613335SNagadheeraj Rottela *
571c9613335SNagadheeraj Rottela * Returns next free entry in the destination SG list
572c9613335SNagadheeraj Rottela **/
create_single_sg(struct scatterlist * sg,void * buf,int buflen)5734bede34cSNagadheeraj, Rottela static inline struct scatterlist *create_single_sg(struct scatterlist *sg,
5744bede34cSNagadheeraj, Rottela void *buf, int buflen)
5754bede34cSNagadheeraj, Rottela {
5764bede34cSNagadheeraj, Rottela sg_set_buf(sg, buf, buflen);
5774bede34cSNagadheeraj, Rottela sg++;
5784bede34cSNagadheeraj, Rottela return sg;
5794bede34cSNagadheeraj, Rottela }
5804bede34cSNagadheeraj, Rottela
581c9613335SNagadheeraj Rottela /**
582c9613335SNagadheeraj Rottela * create_multi_sg - Create multiple sg entries with buflen data length from
583c9613335SNagadheeraj Rottela * source sglist
584c9613335SNagadheeraj Rottela * @to_sg: Destination SG list
585c9613335SNagadheeraj Rottela * @from_sg: Source SG list
586c9613335SNagadheeraj Rottela * @buflen: Data length
587c9613335SNagadheeraj Rottela *
588c9613335SNagadheeraj Rottela * Returns next free entry in the destination SG list
589c9613335SNagadheeraj Rottela **/
create_multi_sg(struct scatterlist * to_sg,struct scatterlist * from_sg,int buflen)5904bede34cSNagadheeraj, Rottela static inline struct scatterlist *create_multi_sg(struct scatterlist *to_sg,
591c9613335SNagadheeraj Rottela struct scatterlist *from_sg,
592c9613335SNagadheeraj Rottela int buflen)
5934bede34cSNagadheeraj, Rottela {
594c9613335SNagadheeraj Rottela struct scatterlist *sg = to_sg;
595c9613335SNagadheeraj Rottela unsigned int sglen;
5964bede34cSNagadheeraj, Rottela
5978a3719a5SNagadheeraj Rottela for (; buflen && from_sg; buflen -= sglen) {
598c9613335SNagadheeraj Rottela sglen = from_sg->length;
599c9613335SNagadheeraj Rottela if (sglen > buflen)
600c9613335SNagadheeraj Rottela sglen = buflen;
601c9613335SNagadheeraj Rottela
602c9613335SNagadheeraj Rottela sg_set_buf(sg, sg_virt(from_sg), sglen);
603c9613335SNagadheeraj Rottela from_sg = sg_next(from_sg);
604c9613335SNagadheeraj Rottela sg++;
6054bede34cSNagadheeraj, Rottela }
6064bede34cSNagadheeraj, Rottela
607c9613335SNagadheeraj Rottela return sg;
6084bede34cSNagadheeraj, Rottela }
6094bede34cSNagadheeraj, Rottela
set_orh_value(u64 * orh)6104bede34cSNagadheeraj, Rottela static inline void set_orh_value(u64 *orh)
6114bede34cSNagadheeraj, Rottela {
6124bede34cSNagadheeraj, Rottela WRITE_ONCE(*orh, PENDING_SIG);
6134bede34cSNagadheeraj, Rottela }
6144bede34cSNagadheeraj, Rottela
set_comp_value(u64 * comp)6154bede34cSNagadheeraj, Rottela static inline void set_comp_value(u64 *comp)
6164bede34cSNagadheeraj, Rottela {
6174bede34cSNagadheeraj, Rottela WRITE_ONCE(*comp, PENDING_SIG);
6184bede34cSNagadheeraj, Rottela }
6194bede34cSNagadheeraj, Rottela
alloc_src_req_buf(struct nitrox_kcrypt_request * nkreq,int nents,int ivsize)620c9613335SNagadheeraj Rottela static inline int alloc_src_req_buf(struct nitrox_kcrypt_request *nkreq,
621c9613335SNagadheeraj Rottela int nents, int ivsize)
622c9613335SNagadheeraj Rottela {
623c9613335SNagadheeraj Rottela struct se_crypto_request *creq = &nkreq->creq;
624c9613335SNagadheeraj Rottela
625c9613335SNagadheeraj Rottela nkreq->src = alloc_req_buf(nents, ivsize, creq->gfp);
626c9613335SNagadheeraj Rottela if (!nkreq->src)
627c9613335SNagadheeraj Rottela return -ENOMEM;
628c9613335SNagadheeraj Rottela
629c9613335SNagadheeraj Rottela return 0;
630c9613335SNagadheeraj Rottela }
631c9613335SNagadheeraj Rottela
nitrox_creq_copy_iv(char * dst,char * src,int size)632c9613335SNagadheeraj Rottela static inline void nitrox_creq_copy_iv(char *dst, char *src, int size)
633c9613335SNagadheeraj Rottela {
634c9613335SNagadheeraj Rottela memcpy(dst, src, size);
635c9613335SNagadheeraj Rottela }
636c9613335SNagadheeraj Rottela
nitrox_creq_src_sg(char * iv,int ivsize)637c9613335SNagadheeraj Rottela static inline struct scatterlist *nitrox_creq_src_sg(char *iv, int ivsize)
638c9613335SNagadheeraj Rottela {
639c9613335SNagadheeraj Rottela return (struct scatterlist *)(iv + ivsize);
640c9613335SNagadheeraj Rottela }
641c9613335SNagadheeraj Rottela
nitrox_creq_set_src_sg(struct nitrox_kcrypt_request * nkreq,int nents,int ivsize,struct scatterlist * src,int buflen)642c9613335SNagadheeraj Rottela static inline void nitrox_creq_set_src_sg(struct nitrox_kcrypt_request *nkreq,
643c9613335SNagadheeraj Rottela int nents, int ivsize,
644c9613335SNagadheeraj Rottela struct scatterlist *src, int buflen)
645c9613335SNagadheeraj Rottela {
646c9613335SNagadheeraj Rottela char *iv = nkreq->src;
647c9613335SNagadheeraj Rottela struct scatterlist *sg;
648c9613335SNagadheeraj Rottela struct se_crypto_request *creq = &nkreq->creq;
649c9613335SNagadheeraj Rottela
650c9613335SNagadheeraj Rottela creq->src = nitrox_creq_src_sg(iv, ivsize);
651c9613335SNagadheeraj Rottela sg = creq->src;
652c9613335SNagadheeraj Rottela sg_init_table(sg, nents);
653c9613335SNagadheeraj Rottela
654c9613335SNagadheeraj Rottela /* Input format:
655c9613335SNagadheeraj Rottela * +----+----------------+
656c9613335SNagadheeraj Rottela * | IV | SRC sg entries |
657c9613335SNagadheeraj Rottela * +----+----------------+
658c9613335SNagadheeraj Rottela */
659c9613335SNagadheeraj Rottela
660c9613335SNagadheeraj Rottela /* IV */
661c9613335SNagadheeraj Rottela sg = create_single_sg(sg, iv, ivsize);
662c9613335SNagadheeraj Rottela /* SRC entries */
663c9613335SNagadheeraj Rottela create_multi_sg(sg, src, buflen);
664c9613335SNagadheeraj Rottela }
665c9613335SNagadheeraj Rottela
alloc_dst_req_buf(struct nitrox_kcrypt_request * nkreq,int nents)666c9613335SNagadheeraj Rottela static inline int alloc_dst_req_buf(struct nitrox_kcrypt_request *nkreq,
667c9613335SNagadheeraj Rottela int nents)
668c9613335SNagadheeraj Rottela {
669c9613335SNagadheeraj Rottela int extralen = ORH_HLEN + COMP_HLEN;
670c9613335SNagadheeraj Rottela struct se_crypto_request *creq = &nkreq->creq;
671c9613335SNagadheeraj Rottela
672c9613335SNagadheeraj Rottela nkreq->dst = alloc_req_buf(nents, extralen, creq->gfp);
673c9613335SNagadheeraj Rottela if (!nkreq->dst)
674c9613335SNagadheeraj Rottela return -ENOMEM;
675c9613335SNagadheeraj Rottela
676c9613335SNagadheeraj Rottela return 0;
677c9613335SNagadheeraj Rottela }
678c9613335SNagadheeraj Rottela
nitrox_creq_set_orh(struct nitrox_kcrypt_request * nkreq)679c9613335SNagadheeraj Rottela static inline void nitrox_creq_set_orh(struct nitrox_kcrypt_request *nkreq)
680c9613335SNagadheeraj Rottela {
681c9613335SNagadheeraj Rottela struct se_crypto_request *creq = &nkreq->creq;
682c9613335SNagadheeraj Rottela
683c9613335SNagadheeraj Rottela creq->orh = (u64 *)(nkreq->dst);
684c9613335SNagadheeraj Rottela set_orh_value(creq->orh);
685c9613335SNagadheeraj Rottela }
686c9613335SNagadheeraj Rottela
nitrox_creq_set_comp(struct nitrox_kcrypt_request * nkreq)687c9613335SNagadheeraj Rottela static inline void nitrox_creq_set_comp(struct nitrox_kcrypt_request *nkreq)
688c9613335SNagadheeraj Rottela {
689c9613335SNagadheeraj Rottela struct se_crypto_request *creq = &nkreq->creq;
690c9613335SNagadheeraj Rottela
691c9613335SNagadheeraj Rottela creq->comp = (u64 *)(nkreq->dst + ORH_HLEN);
692c9613335SNagadheeraj Rottela set_comp_value(creq->comp);
693c9613335SNagadheeraj Rottela }
694c9613335SNagadheeraj Rottela
nitrox_creq_dst_sg(char * dst)695c9613335SNagadheeraj Rottela static inline struct scatterlist *nitrox_creq_dst_sg(char *dst)
696c9613335SNagadheeraj Rottela {
697c9613335SNagadheeraj Rottela return (struct scatterlist *)(dst + ORH_HLEN + COMP_HLEN);
698c9613335SNagadheeraj Rottela }
699c9613335SNagadheeraj Rottela
nitrox_creq_set_dst_sg(struct nitrox_kcrypt_request * nkreq,int nents,int ivsize,struct scatterlist * dst,int buflen)700c9613335SNagadheeraj Rottela static inline void nitrox_creq_set_dst_sg(struct nitrox_kcrypt_request *nkreq,
701c9613335SNagadheeraj Rottela int nents, int ivsize,
702c9613335SNagadheeraj Rottela struct scatterlist *dst, int buflen)
703c9613335SNagadheeraj Rottela {
704c9613335SNagadheeraj Rottela struct se_crypto_request *creq = &nkreq->creq;
705c9613335SNagadheeraj Rottela struct scatterlist *sg;
706c9613335SNagadheeraj Rottela char *iv = nkreq->src;
707c9613335SNagadheeraj Rottela
708c9613335SNagadheeraj Rottela creq->dst = nitrox_creq_dst_sg(nkreq->dst);
709c9613335SNagadheeraj Rottela sg = creq->dst;
710c9613335SNagadheeraj Rottela sg_init_table(sg, nents);
711c9613335SNagadheeraj Rottela
712c9613335SNagadheeraj Rottela /* Output format:
713c9613335SNagadheeraj Rottela * +-----+----+----------------+-----------------+
714c9613335SNagadheeraj Rottela * | ORH | IV | DST sg entries | COMPLETION Bytes|
715c9613335SNagadheeraj Rottela * +-----+----+----------------+-----------------+
716c9613335SNagadheeraj Rottela */
717c9613335SNagadheeraj Rottela
718c9613335SNagadheeraj Rottela /* ORH */
719c9613335SNagadheeraj Rottela sg = create_single_sg(sg, creq->orh, ORH_HLEN);
720c9613335SNagadheeraj Rottela /* IV */
721c9613335SNagadheeraj Rottela sg = create_single_sg(sg, iv, ivsize);
722c9613335SNagadheeraj Rottela /* DST entries */
723c9613335SNagadheeraj Rottela sg = create_multi_sg(sg, dst, buflen);
724c9613335SNagadheeraj Rottela /* COMPLETION Bytes */
725c9613335SNagadheeraj Rottela create_single_sg(sg, creq->comp, COMP_HLEN);
726c9613335SNagadheeraj Rottela }
727c9613335SNagadheeraj Rottela
72814fa93cdSSrikanth Jampala #endif /* __NITROX_REQ_H */
729