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Diffstat (limited to '')
| -rw-r--r-- | drivers/crypto/caam/intern.h | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/drivers/crypto/caam/intern.h b/drivers/crypto/caam/intern.h new file mode 100644 index 000000000..572cf66c8 --- /dev/null +++ b/drivers/crypto/caam/intern.h @@ -0,0 +1,240 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * CAAM/SEC 4.x driver backend + * Private/internal definitions between modules + * + * Copyright 2008-2011 Freescale Semiconductor, Inc. + * Copyright 2019 NXP + */ + +#ifndef INTERN_H +#define INTERN_H + +#include "ctrl.h" +#include <crypto/engine.h> + +/* Currently comes from Kconfig param as a ^2 (driver-required) */ +#define JOBR_DEPTH (1 << CONFIG_CRYPTO_DEV_FSL_CAAM_RINGSIZE) + +/* + * Maximum size for crypto-engine software queue based on Job Ring + * size (JOBR_DEPTH) and a THRESHOLD (reserved for the non-crypto-API + * requests that are not passed through crypto-engine) + */ +#define THRESHOLD 15 +#define CRYPTO_ENGINE_MAX_QLEN (JOBR_DEPTH - THRESHOLD) + +/* Kconfig params for interrupt coalescing if selected (else zero) */ +#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_INTC +#define JOBR_INTC JRCFG_ICEN +#define JOBR_INTC_TIME_THLD CONFIG_CRYPTO_DEV_FSL_CAAM_INTC_TIME_THLD +#define JOBR_INTC_COUNT_THLD CONFIG_CRYPTO_DEV_FSL_CAAM_INTC_COUNT_THLD +#else +#define JOBR_INTC 0 +#define JOBR_INTC_TIME_THLD 0 +#define JOBR_INTC_COUNT_THLD 0 +#endif + +/* + * Storage for tracking each in-process entry moving across a ring + * Each entry on an output ring needs one of these + */ +struct caam_jrentry_info { + void (*callbk)(struct device *dev, u32 *desc, u32 status, void *arg); + void *cbkarg; /* Argument per ring entry */ + u32 *desc_addr_virt; /* Stored virt addr for postprocessing */ + dma_addr_t desc_addr_dma; /* Stored bus addr for done matching */ + u32 desc_size; /* Stored size for postprocessing, header derived */ +}; + +/* Private sub-storage for a single JobR */ +struct caam_drv_private_jr { + struct list_head list_node; /* Job Ring device list */ + struct device *dev; + int ridx; + struct caam_job_ring __iomem *rregs; /* JobR's register space */ + struct tasklet_struct irqtask; + int irq; /* One per queue */ + bool hwrng; + + /* Number of scatterlist crypt transforms active on the JobR */ + atomic_t tfm_count ____cacheline_aligned; + + /* Job ring info */ + struct caam_jrentry_info *entinfo; /* Alloc'ed 1 per ring entry */ + spinlock_t inplock ____cacheline_aligned; /* Input ring index lock */ + u32 inpring_avail; /* Number of free entries in input ring */ + int head; /* entinfo (s/w ring) head index */ + void *inpring; /* Base of input ring, alloc + * DMA-safe */ + int out_ring_read_index; /* Output index "tail" */ + int tail; /* entinfo (s/w ring) tail index */ + void *outring; /* Base of output ring, DMA-safe */ + struct crypto_engine *engine; +}; + +/* + * Driver-private storage for a single CAAM block instance + */ +struct caam_drv_private { + /* Physical-presence section */ + struct caam_ctrl __iomem *ctrl; /* controller region */ + struct caam_deco __iomem *deco; /* DECO/CCB views */ + struct caam_assurance __iomem *assure; + struct caam_queue_if __iomem *qi; /* QI control region */ + struct caam_job_ring __iomem *jr[4]; /* JobR's register space */ + + struct iommu_domain *domain; + + /* + * Detected geometry block. Filled in from device tree if powerpc, + * or from register-based version detection code + */ + u8 total_jobrs; /* Total Job Rings in device */ + u8 qi_present; /* Nonzero if QI present in device */ + u8 blob_present; /* Nonzero if BLOB support present in device */ + u8 mc_en; /* Nonzero if MC f/w is active */ + int secvio_irq; /* Security violation interrupt number */ + int virt_en; /* Virtualization enabled in CAAM */ + int era; /* CAAM Era (internal HW revision) */ + +#define RNG4_MAX_HANDLES 2 + /* RNG4 block */ + u32 rng4_sh_init; /* This bitmap shows which of the State + Handles of the RNG4 block are initialized + by this driver */ + + struct clk_bulk_data *clks; + int num_clks; + /* + * debugfs entries for developer view into driver/device + * variables at runtime. + */ +#ifdef CONFIG_DEBUG_FS + struct dentry *ctl; /* controller dir */ + struct debugfs_blob_wrapper ctl_kek_wrap, ctl_tkek_wrap, ctl_tdsk_wrap; +#endif +}; + +#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API + +int caam_algapi_init(struct device *dev); +void caam_algapi_exit(void); + +#else + +static inline int caam_algapi_init(struct device *dev) +{ + return 0; +} + +static inline void caam_algapi_exit(void) +{ +} + +#endif /* CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API */ + +#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_AHASH_API + +int caam_algapi_hash_init(struct device *dev); +void caam_algapi_hash_exit(void); + +#else + +static inline int caam_algapi_hash_init(struct device *dev) +{ + return 0; +} + +static inline void caam_algapi_hash_exit(void) +{ +} + +#endif /* CONFIG_CRYPTO_DEV_FSL_CAAM_AHASH_API */ + +#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_PKC_API + +int caam_pkc_init(struct device *dev); +void caam_pkc_exit(void); + +#else + +static inline int caam_pkc_init(struct device *dev) +{ + return 0; +} + +static inline void caam_pkc_exit(void) +{ +} + +#endif /* CONFIG_CRYPTO_DEV_FSL_CAAM_PKC_API */ + +#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_RNG_API + +int caam_rng_init(struct device *dev); +void caam_rng_exit(struct device *dev); + +#else + +static inline int caam_rng_init(struct device *dev) +{ + return 0; +} + +static inline void caam_rng_exit(struct device *dev) {} + +#endif /* CONFIG_CRYPTO_DEV_FSL_CAAM_RNG_API */ + +#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_PRNG_API + +int caam_prng_register(struct device *dev); +void caam_prng_unregister(void *data); + +#else + +static inline int caam_prng_register(struct device *dev) +{ + return 0; +} + +static inline void caam_prng_unregister(void *data) {} +#endif /* CONFIG_CRYPTO_DEV_FSL_CAAM_PRNG_API */ + +#ifdef CONFIG_CAAM_QI + +int caam_qi_algapi_init(struct device *dev); +void caam_qi_algapi_exit(void); + +#else + +static inline int caam_qi_algapi_init(struct device *dev) +{ + return 0; +} + +static inline void caam_qi_algapi_exit(void) +{ +} + +#endif /* CONFIG_CAAM_QI */ + +static inline u64 caam_get_dma_mask(struct device *dev) +{ + struct device_node *nprop = dev->of_node; + + if (caam_ptr_sz != sizeof(u64)) + return DMA_BIT_MASK(32); + + if (caam_dpaa2) + return DMA_BIT_MASK(49); + + if (of_device_is_compatible(nprop, "fsl,sec-v5.0-job-ring") || + of_device_is_compatible(nprop, "fsl,sec-v5.0")) + return DMA_BIT_MASK(40); + + return DMA_BIT_MASK(36); +} + + +#endif /* INTERN_H */ |