diff options
Diffstat (limited to 'drivers/crypto/caam/caamalg_qi2.h')
| -rw-r--r-- | drivers/crypto/caam/caamalg_qi2.h | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/drivers/crypto/caam/caamalg_qi2.h b/drivers/crypto/caam/caamalg_qi2.h new file mode 100644 index 0000000000..abb502bb67 --- /dev/null +++ b/drivers/crypto/caam/caamalg_qi2.h @@ -0,0 +1,198 @@ +/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */ +/* + * Copyright 2015-2016 Freescale Semiconductor Inc. + * Copyright 2017-2018 NXP + */ + +#ifndef _CAAMALG_QI2_H_ +#define _CAAMALG_QI2_H_ + +#include <crypto/internal/skcipher.h> +#include <linux/compiler_attributes.h> +#include <soc/fsl/dpaa2-io.h> +#include <soc/fsl/dpaa2-fd.h> +#include <linux/threads.h> +#include <linux/netdevice.h> +#include "dpseci.h" +#include "desc_constr.h" + +#define DPAA2_CAAM_STORE_SIZE 16 +/* NAPI weight *must* be a multiple of the store size. */ +#define DPAA2_CAAM_NAPI_WEIGHT 512 + +/* The congestion entrance threshold was chosen so that on LS2088 + * we support the maximum throughput for the available memory + */ +#define DPAA2_SEC_CONG_ENTRY_THRESH (128 * 1024 * 1024) +#define DPAA2_SEC_CONG_EXIT_THRESH (DPAA2_SEC_CONG_ENTRY_THRESH * 9 / 10) + +/** + * dpaa2_caam_priv - driver private data + * @dpseci_id: DPSECI object unique ID + * @major_ver: DPSECI major version + * @minor_ver: DPSECI minor version + * @dpseci_attr: DPSECI attributes + * @sec_attr: SEC engine attributes + * @rx_queue_attr: array of Rx queue attributes + * @tx_queue_attr: array of Tx queue attributes + * @cscn_mem: pointer to memory region containing the congestion SCN + * it's size is larger than to accommodate alignment + * @cscn_dma: dma address used by the QMAN to write CSCN messages + * @dev: device associated with the DPSECI object + * @mc_io: pointer to MC portal's I/O object + * @domain: IOMMU domain + * @ppriv: per CPU pointers to privata data + */ +struct dpaa2_caam_priv { + int dpsec_id; + + u16 major_ver; + u16 minor_ver; + + struct dpseci_attr dpseci_attr; + struct dpseci_sec_attr sec_attr; + struct dpseci_rx_queue_attr rx_queue_attr[DPSECI_MAX_QUEUE_NUM]; + struct dpseci_tx_queue_attr tx_queue_attr[DPSECI_MAX_QUEUE_NUM]; + int num_pairs; + + /* congestion */ + void *cscn_mem; + dma_addr_t cscn_dma; + + struct device *dev; + struct fsl_mc_io *mc_io; + struct iommu_domain *domain; + + struct dpaa2_caam_priv_per_cpu __percpu *ppriv; + struct dentry *dfs_root; +}; + +/** + * dpaa2_caam_priv_per_cpu - per CPU private data + * @napi: napi structure + * @net_dev: netdev used by napi + * @req_fqid: (virtual) request (Tx / enqueue) FQID + * @rsp_fqid: (virtual) response (Rx / dequeue) FQID + * @prio: internal queue number - index for dpaa2_caam_priv.*_queue_attr + * @nctx: notification context of response FQ + * @store: where dequeued frames are stored + * @priv: backpointer to dpaa2_caam_priv + * @dpio: portal used for data path operations + */ +struct dpaa2_caam_priv_per_cpu { + struct napi_struct napi; + struct net_device net_dev; + int req_fqid; + int rsp_fqid; + int prio; + struct dpaa2_io_notification_ctx nctx; + struct dpaa2_io_store *store; + struct dpaa2_caam_priv *priv; + struct dpaa2_io *dpio; +}; + +/* Length of a single buffer in the QI driver memory cache */ +#define CAAM_QI_MEMCACHE_SIZE 512 + +/* + * aead_edesc - s/w-extended aead descriptor + * @src_nents: number of segments in input scatterlist + * @dst_nents: number of segments in output scatterlist + * @iv_dma: dma address of iv for checking continuity and link table + * @qm_sg_bytes: length of dma mapped h/w link table + * @qm_sg_dma: bus physical mapped address of h/w link table + * @assoclen: associated data length, in CAAM endianness + * @assoclen_dma: bus physical mapped address of req->assoclen + * @sgt: the h/w link table, followed by IV + */ +struct aead_edesc { + int src_nents; + int dst_nents; + dma_addr_t iv_dma; + int qm_sg_bytes; + dma_addr_t qm_sg_dma; + unsigned int assoclen; + dma_addr_t assoclen_dma; + struct dpaa2_sg_entry sgt[]; +}; + +/* + * skcipher_edesc - s/w-extended skcipher descriptor + * @src_nents: number of segments in input scatterlist + * @dst_nents: number of segments in output scatterlist + * @iv_dma: dma address of iv for checking continuity and link table + * @qm_sg_bytes: length of dma mapped qm_sg space + * @qm_sg_dma: I/O virtual address of h/w link table + * @sgt: the h/w link table, followed by IV + */ +struct skcipher_edesc { + int src_nents; + int dst_nents; + dma_addr_t iv_dma; + int qm_sg_bytes; + dma_addr_t qm_sg_dma; + struct dpaa2_sg_entry sgt[]; +}; + +/* + * ahash_edesc - s/w-extended ahash descriptor + * @qm_sg_dma: I/O virtual address of h/w link table + * @src_nents: number of segments in input scatterlist + * @qm_sg_bytes: length of dma mapped qm_sg space + * @sgt: pointer to h/w link table + */ +struct ahash_edesc { + dma_addr_t qm_sg_dma; + int src_nents; + int qm_sg_bytes; + struct dpaa2_sg_entry sgt[]; +}; + +/** + * caam_flc - Flow Context (FLC) + * @flc: Flow Context options + * @sh_desc: Shared Descriptor + */ +struct caam_flc { + u32 flc[16]; + u32 sh_desc[MAX_SDLEN]; +} __aligned(CRYPTO_DMA_ALIGN); + +enum optype { + ENCRYPT = 0, + DECRYPT, + NUM_OP +}; + +/** + * caam_request - the request structure the driver application should fill while + * submitting a job to driver. + * @fd_flt: Frame list table defining input and output + * fd_flt[0] - FLE pointing to output buffer + * fd_flt[1] - FLE pointing to input buffer + * @fd_flt_dma: DMA address for the frame list table + * @flc: Flow Context + * @flc_dma: I/O virtual address of Flow Context + * @cbk: Callback function to invoke when job is completed + * @ctx: arbit context attached with request by the application + * @edesc: extended descriptor; points to one of {skcipher,aead}_edesc + */ +struct caam_request { + struct dpaa2_fl_entry fd_flt[2] __aligned(CRYPTO_DMA_ALIGN); + dma_addr_t fd_flt_dma; + struct caam_flc *flc; + dma_addr_t flc_dma; + void (*cbk)(void *ctx, u32 err); + void *ctx; + void *edesc; + struct skcipher_request fallback_req; +}; + +/** + * dpaa2_caam_enqueue() - enqueue a crypto request + * @dev: device associated with the DPSECI object + * @req: pointer to caam_request + */ +int dpaa2_caam_enqueue(struct device *dev, struct caam_request *req); + +#endif /* _CAAMALG_QI2_H_ */ |