diff options
Diffstat (limited to 'drivers/crypto/caam/intern.h')
| -rw-r--r-- | drivers/crypto/caam/intern.h | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/drivers/crypto/caam/intern.h b/drivers/crypto/caam/intern.h new file mode 100644 index 00000000..991ce0b5 --- /dev/null +++ b/drivers/crypto/caam/intern.h @@ -0,0 +1,188 @@ +/* + * CAAM/SEC 4.x driver backend + * Private/internal definitions between modules + * + * Copyright (C) 2008-2012 Freescale Semiconductor, Inc. + * + */ + +#ifndef INTERN_H +#define INTERN_H + +#define JOBR_UNASSIGNED 0 +#define JOBR_ASSIGNED 1 + +/* Default clock/sample settings for an RNG4 entropy source */ +#define RNG4_ENT_CLOCKS_SAMPLE 1600 + +/* Currently comes from Kconfig param as a ^2 (driver-required) */ +#define JOBR_DEPTH (1 << CONFIG_CRYPTO_DEV_FSL_CAAM_RINGSIZE) + +/* 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 + +#ifndef CONFIG_OF +#define JR_IRQRES_NAME_ROOT "irq_jr" +#define JR_MEMRES_NAME_ROOT "offset_jr" +#endif + +#ifdef CONFIG_ARM +/* + * FIXME: ARM tree doesn't seem to provide this, ergo it seems to be + * in "platform limbo". Find a better place, perhaps. + */ +static inline void irq_dispose_mapping(unsigned int virq) +{ + return; +} +#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 device *parentdev; /* points back to controller dev */ + int ridx; + struct caam_job_ring __iomem *rregs; /* JobR's register space */ + struct tasklet_struct irqtask[NR_CPUS]; + int irq; /* One per queue */ + int assign; /* busy/free */ + + /* Job ring info */ + int ringsize; /* Size of rings (assume input = output) */ + struct caam_jrentry_info *entinfo; /* Alloc'ed 1 per ring entry */ + spinlock_t inplock ____cacheline_aligned; /* Input ring index lock */ + int inp_ring_write_index; /* Input index "tail" */ + int head; /* entinfo (s/w ring) head index */ + dma_addr_t *inpring; /* Base of input ring, alloc DMA-safe */ + spinlock_t outlock ____cacheline_aligned; /* Output ring index lock */ + int out_ring_read_index; /* Output index "tail" */ + int tail; /* entinfo (s/w ring) tail index */ + struct jr_outentry *outring; /* Base of output ring, DMA-safe */ +}; + +/* + * Driver-private storage for a single CAAM block instance + */ +struct caam_drv_private { + + struct device *dev; + struct device **jrdev; /* Alloc'ed array per sub-device */ + spinlock_t jr_alloc_lock; + struct platform_device *pdev; + + /* Physical-presence section */ + struct caam_ctrl *ctrl; /* controller region */ + struct caam_deco **deco; /* DECO/CCB views */ + struct caam_assurance *ac; + struct caam_queue_if *qi; /* QI control region */ + struct snvs_full __iomem *snvs; /* SNVS HP+LP register space */ + dma_addr_t __iomem *sm_base; /* Secure memory storage base */ + u32 sm_size; + + /* + * 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 */ + int secvio_irq; /* Security violation interrupt number */ + int rng_inst; /* Total instantiated RNGs */ + + /* which jr allocated to scatterlist crypto */ + atomic_t tfm_count ____cacheline_aligned; + int num_jrs_for_algapi; + struct device **algapi_jr; + /* list of registered crypto algorithms (mk generic context handle?) */ + struct list_head alg_list; + /* list of registered hash algorithms (mk generic context handle?) */ + struct list_head hash_list; + +#ifdef CONFIG_ARM + struct clk *caam_clk; +#endif + +#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_SM + struct device *smdev; /* Secure Memory dev */ +#endif + +#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_SECVIO + struct device *secviodev; +#endif + + /* + * debugfs entries for developer view into driver/device + * variables at runtime. + */ +#ifdef CONFIG_DEBUG_FS + struct dentry *dfs_root; + struct dentry *ctl; /* controller dir */ + struct dentry *ctl_rq_dequeued, *ctl_ob_enc_req, *ctl_ib_dec_req; + struct dentry *ctl_ob_enc_bytes, *ctl_ob_prot_bytes; + struct dentry *ctl_ib_dec_bytes, *ctl_ib_valid_bytes; + struct dentry *ctl_faultaddr, *ctl_faultdetail, *ctl_faultstatus; + + struct debugfs_blob_wrapper ctl_kek_wrap, ctl_tkek_wrap, ctl_tdsk_wrap; + struct dentry *ctl_kek, *ctl_tkek, *ctl_tdsk; +#endif +}; + +/* + * These startup/shutdown functions exist to enable API startup/shutdown + * outside of the OF device detection framework. It's necessary for ARM + * kernels as presently delivered. + * + * Once ARM kernels are shipping with OF support, these functions can + * be re-integrated into the normal probe startup/exit functions, + * and these prototypes can then be removed. + */ +#ifndef CONFIG_OF +void caam_algapi_shutdown(struct platform_device *pdev); +int caam_algapi_startup(struct platform_device *pdev); + +#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_AHASH_API +int caam_algapi_hash_startup(struct platform_device *pdev); +void caam_algapi_hash_shutdown(struct platform_device *pdev); +#endif + +#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_RNG_API +int caam_rng_startup(struct platform_device *pdev); +void caam_rng_shutdown(void); +#endif + +#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_SM +int caam_sm_startup(struct platform_device *pdev); +void caam_sm_shutdown(struct platform_device *pdev); +#endif + +#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_SM_TEST +int caam_sm_example_init(struct platform_device *pdev); +#endif + +#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_SECVIO +int caam_secvio_startup(struct platform_device *pdev); +void caam_secvio_shutdown(struct platform_device *pdev); +#endif /* SECVIO */ + +#endif /* CONFIG_OF */ + +#endif /* INTERN_H */ |