diff options
Diffstat (limited to 'drivers/crypto/marvell/octeontx2/otx2_cpt_reqmgr.h')
| -rw-r--r-- | drivers/crypto/marvell/octeontx2/otx2_cpt_reqmgr.h | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/drivers/crypto/marvell/octeontx2/otx2_cpt_reqmgr.h b/drivers/crypto/marvell/octeontx2/otx2_cpt_reqmgr.h new file mode 100644 index 000000000000..dbb1ee746f4c --- /dev/null +++ b/drivers/crypto/marvell/octeontx2/otx2_cpt_reqmgr.h @@ -0,0 +1,197 @@ +/* SPDX-License-Identifier: GPL-2.0-only + * Copyright (C) 2020 Marvell. + */ + +#ifndef __OTX2_CPT_REQMGR_H +#define __OTX2_CPT_REQMGR_H + +#include "otx2_cpt_common.h" + +/* Completion code size and initial value */ +#define OTX2_CPT_COMPLETION_CODE_SIZE 8 +#define OTX2_CPT_COMPLETION_CODE_INIT OTX2_CPT_COMP_E_NOTDONE +/* + * Maximum total number of SG buffers is 100, we divide it equally + * between input and output + */ +#define OTX2_CPT_MAX_SG_IN_CNT 50 +#define OTX2_CPT_MAX_SG_OUT_CNT 50 + +/* DMA mode direct or SG */ +#define OTX2_CPT_DMA_MODE_DIRECT 0 +#define OTX2_CPT_DMA_MODE_SG 1 + +/* Context source CPTR or DPTR */ +#define OTX2_CPT_FROM_CPTR 0 +#define OTX2_CPT_FROM_DPTR 1 + +#define OTX2_CPT_MAX_REQ_SIZE 65535 + +union otx2_cpt_opcode { + u16 flags; + struct { + u8 major; + u8 minor; + } s; +}; + +struct otx2_cptvf_request { + u32 param1; + u32 param2; + u16 dlen; + union otx2_cpt_opcode opcode; +}; + +/* + * CPT_INST_S software command definitions + * Words EI (0-3) + */ +union otx2_cpt_iq_cmd_word0 { + u64 u; + struct { + __be16 opcode; + __be16 param1; + __be16 param2; + __be16 dlen; + } s; +}; + +union otx2_cpt_iq_cmd_word3 { + u64 u; + struct { + u64 cptr:61; + u64 grp:3; + } s; +}; + +struct otx2_cpt_iq_command { + union otx2_cpt_iq_cmd_word0 cmd; + u64 dptr; + u64 rptr; + union otx2_cpt_iq_cmd_word3 cptr; +}; + +struct otx2_cpt_pending_entry { + void *completion_addr; /* Completion address */ + void *info; + /* Kernel async request callback */ + void (*callback)(int status, void *arg1, void *arg2); + struct crypto_async_request *areq; /* Async request callback arg */ + u8 resume_sender; /* Notify sender to resume sending requests */ + u8 busy; /* Entry status (free/busy) */ +}; + +struct otx2_cpt_pending_queue { + struct otx2_cpt_pending_entry *head; /* Head of the queue */ + u32 front; /* Process work from here */ + u32 rear; /* Append new work here */ + u32 pending_count; /* Pending requests count */ + u32 qlen; /* Queue length */ + spinlock_t lock; /* Queue lock */ +}; + +struct otx2_cpt_buf_ptr { + u8 *vptr; + dma_addr_t dma_addr; + u16 size; +}; + +union otx2_cpt_ctrl_info { + u32 flags; + struct { +#if defined(__BIG_ENDIAN_BITFIELD) + u32 reserved_6_31:26; + u32 grp:3; /* Group bits */ + u32 dma_mode:2; /* DMA mode */ + u32 se_req:1; /* To SE core */ +#else + u32 se_req:1; /* To SE core */ + u32 dma_mode:2; /* DMA mode */ + u32 grp:3; /* Group bits */ + u32 reserved_6_31:26; +#endif + } s; +}; + +struct otx2_cpt_req_info { + /* Kernel async request callback */ + void (*callback)(int status, void *arg1, void *arg2); + struct crypto_async_request *areq; /* Async request callback arg */ + struct otx2_cptvf_request req;/* Request information (core specific) */ + union otx2_cpt_ctrl_info ctrl;/* User control information */ + struct otx2_cpt_buf_ptr in[OTX2_CPT_MAX_SG_IN_CNT]; + struct otx2_cpt_buf_ptr out[OTX2_CPT_MAX_SG_OUT_CNT]; + u8 *iv_out; /* IV to send back */ + u16 rlen; /* Output length */ + u8 in_cnt; /* Number of input buffers */ + u8 out_cnt; /* Number of output buffers */ + u8 req_type; /* Type of request */ + u8 is_enc; /* Is a request an encryption request */ + u8 is_trunc_hmac;/* Is truncated hmac used */ +}; + +struct otx2_cpt_inst_info { + struct otx2_cpt_pending_entry *pentry; + struct otx2_cpt_req_info *req; + struct pci_dev *pdev; + void *completion_addr; + u8 *out_buffer; + u8 *in_buffer; + dma_addr_t dptr_baddr; + dma_addr_t rptr_baddr; + dma_addr_t comp_baddr; + unsigned long time_in; + u32 dlen; + u32 dma_len; + u8 extra_time; +}; + +struct otx2_cpt_sglist_component { + __be16 len0; + __be16 len1; + __be16 len2; + __be16 len3; + __be64 ptr0; + __be64 ptr1; + __be64 ptr2; + __be64 ptr3; +}; + +static inline void otx2_cpt_info_destroy(struct pci_dev *pdev, + struct otx2_cpt_inst_info *info) +{ + struct otx2_cpt_req_info *req; + int i; + + if (info->dptr_baddr) + dma_unmap_single(&pdev->dev, info->dptr_baddr, + info->dma_len, DMA_BIDIRECTIONAL); + + if (info->req) { + req = info->req; + for (i = 0; i < req->out_cnt; i++) { + if (req->out[i].dma_addr) + dma_unmap_single(&pdev->dev, + req->out[i].dma_addr, + req->out[i].size, + DMA_BIDIRECTIONAL); + } + + for (i = 0; i < req->in_cnt; i++) { + if (req->in[i].dma_addr) + dma_unmap_single(&pdev->dev, + req->in[i].dma_addr, + req->in[i].size, + DMA_BIDIRECTIONAL); + } + } + kfree(info); +} + +struct otx2_cptlf_wqe; +int otx2_cpt_do_request(struct pci_dev *pdev, struct otx2_cpt_req_info *req, + int cpu_num); +void otx2_cpt_post_process(struct otx2_cptlf_wqe *wqe); +int otx2_cpt_get_kcrypto_eng_grp_num(struct pci_dev *pdev); + +#endif /* __OTX2_CPT_REQMGR_H */ |