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path: root/drivers/crypto/inside-secure/safexcel.h
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-rw-r--r--drivers/crypto/inside-secure/safexcel.h572
1 files changed, 572 insertions, 0 deletions
diff --git a/drivers/crypto/inside-secure/safexcel.h b/drivers/crypto/inside-secure/safexcel.h
new file mode 100644
index 000000000000..c17fdd40b99f
--- /dev/null
+++ b/drivers/crypto/inside-secure/safexcel.h
@@ -0,0 +1,572 @@
+/*
+ * Copyright (C) 2017 Marvell
+ *
+ * Antoine Tenart <antoine.tenart@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __SAFEXCEL_H__
+#define __SAFEXCEL_H__
+
+#include <crypto/algapi.h>
+#include <crypto/internal/hash.h>
+#include <crypto/skcipher.h>
+
+#define EIP197_HIA_VERSION_LE 0xca35
+#define EIP197_HIA_VERSION_BE 0x35ca
+
+/* Static configuration */
+#define EIP197_DEFAULT_RING_SIZE 64
+#define EIP197_MAX_TOKENS 5
+#define EIP197_MAX_RINGS 4
+#define EIP197_FETCH_COUNT 1
+#define EIP197_MAX_BATCH_SZ 8
+
+#define EIP197_GFP_FLAGS(base) ((base).flags & CRYPTO_TFM_REQ_MAY_SLEEP ? \
+ GFP_KERNEL : GFP_ATOMIC)
+
+/* CDR/RDR register offsets */
+#define EIP197_HIA_xDR_OFF(r) (0x80000 + (r) * 0x1000)
+#define EIP197_HIA_CDR(r) (EIP197_HIA_xDR_OFF(r))
+#define EIP197_HIA_RDR(r) (EIP197_HIA_xDR_OFF(r) + 0x800)
+#define EIP197_HIA_xDR_RING_BASE_ADDR_LO 0x0
+#define EIP197_HIA_xDR_RING_BASE_ADDR_HI 0x4
+#define EIP197_HIA_xDR_RING_SIZE 0x18
+#define EIP197_HIA_xDR_DESC_SIZE 0x1c
+#define EIP197_HIA_xDR_CFG 0x20
+#define EIP197_HIA_xDR_DMA_CFG 0x24
+#define EIP197_HIA_xDR_THRESH 0x28
+#define EIP197_HIA_xDR_PREP_COUNT 0x2c
+#define EIP197_HIA_xDR_PROC_COUNT 0x30
+#define EIP197_HIA_xDR_PREP_PNTR 0x34
+#define EIP197_HIA_xDR_PROC_PNTR 0x38
+#define EIP197_HIA_xDR_STAT 0x3c
+
+/* register offsets */
+#define EIP197_HIA_DFE_CFG 0x8c000
+#define EIP197_HIA_DFE_THR_CTRL 0x8c040
+#define EIP197_HIA_DFE_THR_STAT 0x8c044
+#define EIP197_HIA_DSE_CFG 0x8d000
+#define EIP197_HIA_DSE_THR_CTRL 0x8d040
+#define EIP197_HIA_DSE_THR_STAT 0x8d044
+#define EIP197_HIA_RA_PE_CTRL 0x90010
+#define EIP197_HIA_RA_PE_STAT 0x90014
+#define EIP197_HIA_AIC_R_OFF(r) ((r) * 0x1000)
+#define EIP197_HIA_AIC_R_ENABLE_CTRL(r) (0x9e808 - EIP197_HIA_AIC_R_OFF(r))
+#define EIP197_HIA_AIC_R_ENABLED_STAT(r) (0x9e810 - EIP197_HIA_AIC_R_OFF(r))
+#define EIP197_HIA_AIC_R_ACK(r) (0x9e810 - EIP197_HIA_AIC_R_OFF(r))
+#define EIP197_HIA_AIC_R_ENABLE_CLR(r) (0x9e814 - EIP197_HIA_AIC_R_OFF(r))
+#define EIP197_HIA_AIC_G_ENABLE_CTRL 0x9f808
+#define EIP197_HIA_AIC_G_ENABLED_STAT 0x9f810
+#define EIP197_HIA_AIC_G_ACK 0x9f810
+#define EIP197_HIA_MST_CTRL 0x9fff4
+#define EIP197_HIA_OPTIONS 0x9fff8
+#define EIP197_HIA_VERSION 0x9fffc
+#define EIP197_PE_IN_DBUF_THRES 0xa0000
+#define EIP197_PE_IN_TBUF_THRES 0xa0100
+#define EIP197_PE_ICE_SCRATCH_RAM 0xa0800
+#define EIP197_PE_ICE_PUE_CTRL 0xa0c80
+#define EIP197_PE_ICE_SCRATCH_CTRL 0xa0d04
+#define EIP197_PE_ICE_FPP_CTRL 0xa0d80
+#define EIP197_PE_ICE_RAM_CTRL 0xa0ff0
+#define EIP197_PE_EIP96_FUNCTION_EN 0xa1004
+#define EIP197_PE_EIP96_CONTEXT_CTRL 0xa1008
+#define EIP197_PE_EIP96_CONTEXT_STAT 0xa100c
+#define EIP197_PE_OUT_DBUF_THRES 0xa1c00
+#define EIP197_PE_OUT_TBUF_THRES 0xa1d00
+#define EIP197_CLASSIFICATION_RAMS 0xe0000
+#define EIP197_TRC_CTRL 0xf0800
+#define EIP197_TRC_LASTRES 0xf0804
+#define EIP197_TRC_REGINDEX 0xf0808
+#define EIP197_TRC_PARAMS 0xf0820
+#define EIP197_TRC_FREECHAIN 0xf0824
+#define EIP197_TRC_PARAMS2 0xf0828
+#define EIP197_TRC_ECCCTRL 0xf0830
+#define EIP197_TRC_ECCSTAT 0xf0834
+#define EIP197_TRC_ECCADMINSTAT 0xf0838
+#define EIP197_TRC_ECCDATASTAT 0xf083c
+#define EIP197_TRC_ECCDATA 0xf0840
+#define EIP197_CS_RAM_CTRL 0xf7ff0
+#define EIP197_MST_CTRL 0xffff4
+
+/* EIP197_HIA_xDR_DESC_SIZE */
+#define EIP197_xDR_DESC_MODE_64BIT BIT(31)
+
+/* EIP197_HIA_xDR_DMA_CFG */
+#define EIP197_HIA_xDR_WR_RES_BUF BIT(22)
+#define EIP197_HIA_xDR_WR_CTRL_BUG BIT(23)
+#define EIP197_HIA_xDR_WR_OWN_BUF BIT(24)
+#define EIP197_HIA_xDR_CFG_WR_CACHE(n) (((n) & 0x7) << 23)
+#define EIP197_HIA_xDR_CFG_RD_CACHE(n) (((n) & 0x7) << 29)
+
+/* EIP197_HIA_CDR_THRESH */
+#define EIP197_HIA_CDR_THRESH_PROC_PKT(n) (n)
+#define EIP197_HIA_CDR_THRESH_PROC_MODE BIT(22)
+#define EIP197_HIA_CDR_THRESH_PKT_MODE BIT(23)
+#define EIP197_HIA_CDR_THRESH_TIMEOUT(n) ((n) << 24) /* x256 clk cycles */
+
+/* EIP197_HIA_RDR_THRESH */
+#define EIP197_HIA_RDR_THRESH_PROC_PKT(n) (n)
+#define EIP197_HIA_RDR_THRESH_PKT_MODE BIT(23)
+#define EIP197_HIA_RDR_THRESH_TIMEOUT(n) ((n) << 24) /* x256 clk cycles */
+
+/* EIP197_HIA_xDR_PREP_COUNT */
+#define EIP197_xDR_PREP_CLR_COUNT BIT(31)
+
+/* EIP197_HIA_xDR_PROC_COUNT */
+#define EIP197_xDR_PROC_xD_COUNT(n) ((n) << 2)
+#define EIP197_xDR_PROC_xD_PKT(n) ((n) << 24)
+#define EIP197_xDR_PROC_CLR_COUNT BIT(31)
+
+/* EIP197_HIA_xDR_STAT */
+#define EIP197_xDR_DMA_ERR BIT(0)
+#define EIP197_xDR_PREP_CMD_THRES BIT(1)
+#define EIP197_xDR_ERR BIT(2)
+#define EIP197_xDR_THRESH BIT(4)
+#define EIP197_xDR_TIMEOUT BIT(5)
+
+#define EIP197_HIA_RA_PE_CTRL_RESET BIT(31)
+#define EIP197_HIA_RA_PE_CTRL_EN BIT(30)
+
+/* EIP197_HIA_AIC_R_ENABLE_CTRL */
+#define EIP197_CDR_IRQ(n) BIT((n) * 2)
+#define EIP197_RDR_IRQ(n) BIT((n) * 2 + 1)
+
+/* EIP197_HIA_DFE/DSE_CFG */
+#define EIP197_HIA_DxE_CFG_MIN_DATA_SIZE(n) ((n) << 0)
+#define EIP197_HIA_DxE_CFG_DATA_CACHE_CTRL(n) (((n) & 0x7) << 4)
+#define EIP197_HIA_DxE_CFG_MAX_DATA_SIZE(n) ((n) << 8)
+#define EIP197_HIA_DxE_CFG_MIN_CTRL_SIZE(n) ((n) << 16)
+#define EIP197_HIA_DxE_CFG_CTRL_CACHE_CTRL(n) (((n) & 0x7) << 20)
+#define EIP197_HIA_DxE_CFG_MAX_CTRL_SIZE(n) ((n) << 24)
+#define EIP197_HIA_DFE_CFG_DIS_DEBUG (BIT(31) | BIT(29))
+#define EIP197_HIA_DSE_CFG_DIS_DEBUG BIT(31)
+
+/* EIP197_HIA_DFE/DSE_THR_CTRL */
+#define EIP197_DxE_THR_CTRL_EN BIT(30)
+#define EIP197_DxE_THR_CTRL_RESET_PE BIT(31)
+
+/* EIP197_HIA_AIC_G_ENABLED_STAT */
+#define EIP197_G_IRQ_DFE(n) BIT((n) << 1)
+#define EIP197_G_IRQ_DSE(n) BIT(((n) << 1) + 1)
+#define EIP197_G_IRQ_RING BIT(16)
+#define EIP197_G_IRQ_PE(n) BIT((n) + 20)
+
+/* EIP197_HIA_MST_CTRL */
+#define RD_CACHE_3BITS 0x5
+#define WR_CACHE_3BITS 0x3
+#define RD_CACHE_4BITS (RD_CACHE_3BITS << 1 | BIT(0))
+#define WR_CACHE_4BITS (WR_CACHE_3BITS << 1 | BIT(0))
+#define EIP197_MST_CTRL_RD_CACHE(n) (((n) & 0xf) << 0)
+#define EIP197_MST_CTRL_WD_CACHE(n) (((n) & 0xf) << 4)
+#define EIP197_MST_CTRL_BYTE_SWAP BIT(24)
+#define EIP197_MST_CTRL_NO_BYTE_SWAP BIT(25)
+
+/* EIP197_PE_IN_DBUF/TBUF_THRES */
+#define EIP197_PE_IN_xBUF_THRES_MIN(n) ((n) << 8)
+#define EIP197_PE_IN_xBUF_THRES_MAX(n) ((n) << 12)
+
+/* EIP197_PE_OUT_DBUF_THRES */
+#define EIP197_PE_OUT_DBUF_THRES_MIN(n) ((n) << 0)
+#define EIP197_PE_OUT_DBUF_THRES_MAX(n) ((n) << 4)
+
+/* EIP197_PE_ICE_SCRATCH_CTRL */
+#define EIP197_PE_ICE_SCRATCH_CTRL_CHANGE_TIMER BIT(2)
+#define EIP197_PE_ICE_SCRATCH_CTRL_TIMER_EN BIT(3)
+#define EIP197_PE_ICE_SCRATCH_CTRL_CHANGE_ACCESS BIT(24)
+#define EIP197_PE_ICE_SCRATCH_CTRL_SCRATCH_ACCESS BIT(25)
+
+/* EIP197_PE_ICE_SCRATCH_RAM */
+#define EIP197_NUM_OF_SCRATCH_BLOCKS 32
+
+/* EIP197_PE_ICE_PUE/FPP_CTRL */
+#define EIP197_PE_ICE_x_CTRL_SW_RESET BIT(0)
+#define EIP197_PE_ICE_x_CTRL_CLR_ECC_NON_CORR BIT(14)
+#define EIP197_PE_ICE_x_CTRL_CLR_ECC_CORR BIT(15)
+
+/* EIP197_PE_ICE_RAM_CTRL */
+#define EIP197_PE_ICE_RAM_CTRL_PUE_PROG_EN BIT(0)
+#define EIP197_PE_ICE_RAM_CTRL_FPP_PROG_EN BIT(1)
+
+/* EIP197_PE_EIP96_FUNCTION_EN */
+#define EIP197_FUNCTION_RSVD (BIT(6) | BIT(15) | BIT(20) | BIT(23))
+#define EIP197_PROTOCOL_HASH_ONLY BIT(0)
+#define EIP197_PROTOCOL_ENCRYPT_ONLY BIT(1)
+#define EIP197_PROTOCOL_HASH_ENCRYPT BIT(2)
+#define EIP197_PROTOCOL_HASH_DECRYPT BIT(3)
+#define EIP197_PROTOCOL_ENCRYPT_HASH BIT(4)
+#define EIP197_PROTOCOL_DECRYPT_HASH BIT(5)
+#define EIP197_ALG_ARC4 BIT(7)
+#define EIP197_ALG_AES_ECB BIT(8)
+#define EIP197_ALG_AES_CBC BIT(9)
+#define EIP197_ALG_AES_CTR_ICM BIT(10)
+#define EIP197_ALG_AES_OFB BIT(11)
+#define EIP197_ALG_AES_CFB BIT(12)
+#define EIP197_ALG_DES_ECB BIT(13)
+#define EIP197_ALG_DES_CBC BIT(14)
+#define EIP197_ALG_DES_OFB BIT(16)
+#define EIP197_ALG_DES_CFB BIT(17)
+#define EIP197_ALG_3DES_ECB BIT(18)
+#define EIP197_ALG_3DES_CBC BIT(19)
+#define EIP197_ALG_3DES_OFB BIT(21)
+#define EIP197_ALG_3DES_CFB BIT(22)
+#define EIP197_ALG_MD5 BIT(24)
+#define EIP197_ALG_HMAC_MD5 BIT(25)
+#define EIP197_ALG_SHA1 BIT(26)
+#define EIP197_ALG_HMAC_SHA1 BIT(27)
+#define EIP197_ALG_SHA2 BIT(28)
+#define EIP197_ALG_HMAC_SHA2 BIT(29)
+#define EIP197_ALG_AES_XCBC_MAC BIT(30)
+#define EIP197_ALG_GCM_HASH BIT(31)
+
+/* EIP197_PE_EIP96_CONTEXT_CTRL */
+#define EIP197_CONTEXT_SIZE(n) (n)
+#define EIP197_ADDRESS_MODE BIT(8)
+#define EIP197_CONTROL_MODE BIT(9)
+
+/* Context Control */
+struct safexcel_context_record {
+ u32 control0;
+ u32 control1;
+
+ __le32 data[12];
+} __packed;
+
+/* control0 */
+#define CONTEXT_CONTROL_TYPE_NULL_OUT 0x0
+#define CONTEXT_CONTROL_TYPE_NULL_IN 0x1
+#define CONTEXT_CONTROL_TYPE_HASH_OUT 0x2
+#define CONTEXT_CONTROL_TYPE_HASH_IN 0x3
+#define CONTEXT_CONTROL_TYPE_CRYPTO_OUT 0x4
+#define CONTEXT_CONTROL_TYPE_CRYPTO_IN 0x5
+#define CONTEXT_CONTROL_TYPE_ENCRYPT_HASH_OUT 0x6
+#define CONTEXT_CONTROL_TYPE_DECRYPT_HASH_IN 0x7
+#define CONTEXT_CONTROL_TYPE_HASH_ENCRYPT_OUT 0x14
+#define CONTEXT_CONTROL_TYPE_HASH_DECRYPT_OUT 0x15
+#define CONTEXT_CONTROL_RESTART_HASH BIT(4)
+#define CONTEXT_CONTROL_NO_FINISH_HASH BIT(5)
+#define CONTEXT_CONTROL_SIZE(n) ((n) << 8)
+#define CONTEXT_CONTROL_KEY_EN BIT(16)
+#define CONTEXT_CONTROL_CRYPTO_ALG_AES128 (0x5 << 17)
+#define CONTEXT_CONTROL_CRYPTO_ALG_AES192 (0x6 << 17)
+#define CONTEXT_CONTROL_CRYPTO_ALG_AES256 (0x7 << 17)
+#define CONTEXT_CONTROL_DIGEST_PRECOMPUTED (0x1 << 21)
+#define CONTEXT_CONTROL_DIGEST_HMAC (0x3 << 21)
+#define CONTEXT_CONTROL_CRYPTO_ALG_SHA1 (0x2 << 23)
+#define CONTEXT_CONTROL_CRYPTO_ALG_SHA224 (0x4 << 23)
+#define CONTEXT_CONTROL_CRYPTO_ALG_SHA256 (0x3 << 23)
+#define CONTEXT_CONTROL_INV_FR (0x5 << 24)
+#define CONTEXT_CONTROL_INV_TR (0x6 << 24)
+
+/* control1 */
+#define CONTEXT_CONTROL_CRYPTO_MODE_ECB (0 << 0)
+#define CONTEXT_CONTROL_CRYPTO_MODE_CBC (1 << 0)
+#define CONTEXT_CONTROL_IV0 BIT(5)
+#define CONTEXT_CONTROL_IV1 BIT(6)
+#define CONTEXT_CONTROL_IV2 BIT(7)
+#define CONTEXT_CONTROL_IV3 BIT(8)
+#define CONTEXT_CONTROL_DIGEST_CNT BIT(9)
+#define CONTEXT_CONTROL_COUNTER_MODE BIT(10)
+#define CONTEXT_CONTROL_HASH_STORE BIT(19)
+
+/* EIP197_CS_RAM_CTRL */
+#define EIP197_TRC_ENABLE_0 BIT(4)
+#define EIP197_TRC_ENABLE_1 BIT(5)
+#define EIP197_TRC_ENABLE_2 BIT(6)
+#define EIP197_TRC_ENABLE_MASK GENMASK(6, 4)
+
+/* EIP197_TRC_PARAMS */
+#define EIP197_TRC_PARAMS_SW_RESET BIT(0)
+#define EIP197_TRC_PARAMS_DATA_ACCESS BIT(2)
+#define EIP197_TRC_PARAMS_HTABLE_SZ(x) ((x) << 4)
+#define EIP197_TRC_PARAMS_BLK_TIMER_SPEED(x) ((x) << 10)
+#define EIP197_TRC_PARAMS_RC_SZ_LARGE(n) ((n) << 18)
+
+/* EIP197_TRC_FREECHAIN */
+#define EIP197_TRC_FREECHAIN_HEAD_PTR(p) (p)
+#define EIP197_TRC_FREECHAIN_TAIL_PTR(p) ((p) << 16)
+
+/* EIP197_TRC_PARAMS2 */
+#define EIP197_TRC_PARAMS2_HTABLE_PTR(p) (p)
+#define EIP197_TRC_PARAMS2_RC_SZ_SMALL(n) ((n) << 18)
+
+/* Cache helpers */
+#define EIP197_CS_RC_MAX 52
+#define EIP197_CS_RC_SIZE (4 * sizeof(u32))
+#define EIP197_CS_RC_NEXT(x) (x)
+#define EIP197_CS_RC_PREV(x) ((x) << 10)
+#define EIP197_RC_NULL 0x3ff
+#define EIP197_CS_TRC_REC_WC 59
+#define EIP197_CS_TRC_LG_REC_WC 73
+
+/* Result data */
+struct result_data_desc {
+ u32 packet_length:17;
+ u32 error_code:15;
+
+ u8 bypass_length:4;
+ u8 e15:1;
+ u16 rsvd0;
+ u8 hash_bytes:1;
+ u8 hash_length:6;
+ u8 generic_bytes:1;
+ u8 checksum:1;
+ u8 next_header:1;
+ u8 length:1;
+
+ u16 application_id;
+ u16 rsvd1;
+
+ u32 rsvd2;
+} __packed;
+
+
+/* Basic Result Descriptor format */
+struct safexcel_result_desc {
+ u32 particle_size:17;
+ u8 rsvd0:3;
+ u8 descriptor_overflow:1;
+ u8 buffer_overflow:1;
+ u8 last_seg:1;
+ u8 first_seg:1;
+ u16 result_size:8;
+
+ u32 rsvd1;
+
+ u32 data_lo;
+ u32 data_hi;
+
+ struct result_data_desc result_data;
+} __packed;
+
+struct safexcel_token {
+ u32 packet_length:17;
+ u8 stat:2;
+ u16 instructions:9;
+ u8 opcode:4;
+} __packed;
+
+#define EIP197_TOKEN_STAT_LAST_HASH BIT(0)
+#define EIP197_TOKEN_STAT_LAST_PACKET BIT(1)
+#define EIP197_TOKEN_OPCODE_DIRECTION 0x0
+#define EIP197_TOKEN_OPCODE_INSERT 0x2
+#define EIP197_TOKEN_OPCODE_NOOP EIP197_TOKEN_OPCODE_INSERT
+#define EIP197_TOKEN_OPCODE_BYPASS GENMASK(3, 0)
+
+static inline void eip197_noop_token(struct safexcel_token *token)
+{
+ token->opcode = EIP197_TOKEN_OPCODE_NOOP;
+ token->packet_length = BIT(2);
+}
+
+/* Instructions */
+#define EIP197_TOKEN_INS_INSERT_HASH_DIGEST 0x1c
+#define EIP197_TOKEN_INS_TYPE_OUTPUT BIT(5)
+#define EIP197_TOKEN_INS_TYPE_HASH BIT(6)
+#define EIP197_TOKEN_INS_TYPE_CRYTO BIT(7)
+#define EIP197_TOKEN_INS_LAST BIT(8)
+
+/* Processing Engine Control Data */
+struct safexcel_control_data_desc {
+ u32 packet_length:17;
+ u16 options:13;
+ u8 type:2;
+
+ u16 application_id;
+ u16 rsvd;
+
+ u8 refresh:2;
+ u32 context_lo:30;
+ u32 context_hi;
+
+ u32 control0;
+ u32 control1;
+
+ u32 token[EIP197_MAX_TOKENS];
+} __packed;
+
+#define EIP197_OPTION_MAGIC_VALUE BIT(0)
+#define EIP197_OPTION_64BIT_CTX BIT(1)
+#define EIP197_OPTION_CTX_CTRL_IN_CMD BIT(8)
+#define EIP197_OPTION_4_TOKEN_IV_CMD GENMASK(11, 9)
+
+#define EIP197_TYPE_EXTENDED 0x3
+
+/* Basic Command Descriptor format */
+struct safexcel_command_desc {
+ u32 particle_size:17;
+ u8 rsvd0:5;
+ u8 last_seg:1;
+ u8 first_seg:1;
+ u16 additional_cdata_size:8;
+
+ u32 rsvd1;
+
+ u32 data_lo;
+ u32 data_hi;
+
+ struct safexcel_control_data_desc control_data;
+} __packed;
+
+/*
+ * Internal structures & functions
+ */
+
+enum eip197_fw {
+ FW_IFPP = 0,
+ FW_IPUE,
+ FW_NB
+};
+
+struct safexcel_ring {
+ void *base;
+ void *base_end;
+ dma_addr_t base_dma;
+
+ /* write and read pointers */
+ void *write;
+ void *read;
+
+ /* number of elements used in the ring */
+ unsigned nr;
+ unsigned offset;
+};
+
+enum safexcel_alg_type {
+ SAFEXCEL_ALG_TYPE_SKCIPHER,
+ SAFEXCEL_ALG_TYPE_AHASH,
+};
+
+struct safexcel_request {
+ struct list_head list;
+ struct crypto_async_request *req;
+};
+
+struct safexcel_config {
+ u32 rings;
+
+ u32 cd_size;
+ u32 cd_offset;
+
+ u32 rd_size;
+ u32 rd_offset;
+};
+
+struct safexcel_work_data {
+ struct work_struct work;
+ struct safexcel_crypto_priv *priv;
+ int ring;
+};
+
+struct safexcel_crypto_priv {
+ void __iomem *base;
+ struct device *dev;
+ struct clk *clk;
+ struct safexcel_config config;
+
+ spinlock_t lock;
+ struct crypto_queue queue;
+
+ bool need_dequeue;
+
+ /* context DMA pool */
+ struct dma_pool *context_pool;
+
+ atomic_t ring_used;
+
+ struct {
+ spinlock_t lock;
+ spinlock_t egress_lock;
+
+ struct list_head list;
+ struct workqueue_struct *workqueue;
+ struct safexcel_work_data work_data;
+
+ /* command/result rings */
+ struct safexcel_ring cdr;
+ struct safexcel_ring rdr;
+ } ring[EIP197_MAX_RINGS];
+};
+
+struct safexcel_context {
+ int (*send)(struct crypto_async_request *req, int ring,
+ struct safexcel_request *request, int *commands,
+ int *results);
+ int (*handle_result)(struct safexcel_crypto_priv *priv, int ring,
+ struct crypto_async_request *req, bool *complete,
+ int *ret);
+ struct safexcel_context_record *ctxr;
+ dma_addr_t ctxr_dma;
+
+ int ring;
+ bool needs_inv;
+ bool exit_inv;
+
+ /* Used for ahash requests */
+ dma_addr_t result_dma;
+ void *cache;
+ dma_addr_t cache_dma;
+ unsigned int cache_sz;
+};
+
+/*
+ * Template structure to describe the algorithms in order to register them.
+ * It also has the purpose to contain our private structure and is actually
+ * the only way I know in this framework to avoid having global pointers...
+ */
+struct safexcel_alg_template {
+ struct safexcel_crypto_priv *priv;
+ enum safexcel_alg_type type;
+ union {
+ struct skcipher_alg skcipher;
+ struct ahash_alg ahash;
+ } alg;
+};
+
+struct safexcel_inv_result {
+ struct completion completion;
+ int error;
+};
+
+void safexcel_dequeue(struct safexcel_crypto_priv *priv);
+void safexcel_complete(struct safexcel_crypto_priv *priv, int ring);
+void safexcel_free_context(struct safexcel_crypto_priv *priv,
+ struct crypto_async_request *req,
+ int result_sz);
+int safexcel_invalidate_cache(struct crypto_async_request *async,
+ struct safexcel_context *ctx,
+ struct safexcel_crypto_priv *priv,
+ dma_addr_t ctxr_dma, int ring,
+ struct safexcel_request *request);
+int safexcel_init_ring_descriptors(struct safexcel_crypto_priv *priv,
+ struct safexcel_ring *cdr,
+ struct safexcel_ring *rdr);
+int safexcel_select_ring(struct safexcel_crypto_priv *priv);
+void *safexcel_ring_next_rptr(struct safexcel_crypto_priv *priv,
+ struct safexcel_ring *ring);
+void safexcel_ring_rollback_wptr(struct safexcel_crypto_priv *priv,
+ struct safexcel_ring *ring);
+struct safexcel_command_desc *safexcel_add_cdesc(struct safexcel_crypto_priv *priv,
+ int ring_id,
+ bool first, bool last,
+ dma_addr_t data, u32 len,
+ u32 full_data_len,
+ dma_addr_t context);
+struct safexcel_result_desc *safexcel_add_rdesc(struct safexcel_crypto_priv *priv,
+ int ring_id,
+ bool first, bool last,
+ dma_addr_t data, u32 len);
+void safexcel_inv_complete(struct crypto_async_request *req, int error);
+
+/* available algorithms */
+extern struct safexcel_alg_template safexcel_alg_ecb_aes;
+extern struct safexcel_alg_template safexcel_alg_cbc_aes;
+extern struct safexcel_alg_template safexcel_alg_sha1;
+extern struct safexcel_alg_template safexcel_alg_sha224;
+extern struct safexcel_alg_template safexcel_alg_sha256;
+extern struct safexcel_alg_template safexcel_alg_hmac_sha1;
+
+#endif
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-25 09:43:25 +0300