diff options
Diffstat (limited to 'drivers/crypto/caam/intern.h')
| -rw-r--r-- | drivers/crypto/caam/intern.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/crypto/caam/intern.h b/drivers/crypto/caam/intern.h new file mode 100644 index 0000000000..fe19a2c8d2 --- /dev/null +++ b/drivers/crypto/caam/intern.h @@ -0,0 +1,97 @@ +/* + * CAAM/SEC 4.x driver backend + * Private/internal definitions between modules + * + * Copyright 2008-2011 Freescale Semiconductor, Inc. + * + */ + +#ifndef INTERN_H +#define INTERN_H + +/* Currently comes from Kconfig param as a ^2 (driver-required) */ +#define JOBR_DEPTH (1 << CONFIG_CRYPTO_DEV_FSL_CAAM_RINGSIZE) + +/* + * 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_d *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_d *dev; + int ridx; + struct caam_job_ring __iomem *rregs; /* JobR's register space */ + int irq; /* One per queue */ + + /* Number of scatterlist crypt transforms active on the JobR */ + int tfm_count; + + /* 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; /* 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; /* 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 *smdev; + struct device_d **jrpdev; /* Alloc'ed array per sub-device */ + struct device_d *pdev; + + /* 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 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 virt_en; /* Virtualization enabled in CAAM */ + +#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 *caam_ipg; + struct clk *caam_mem; + struct clk *caam_aclk; + struct clk *caam_emi_slow; +}; + +void caam_jr_algapi_init(struct device *dev); +void caam_jr_algapi_remove(struct device *dev); + +int caam_rng_probe(struct device_d *dev, struct device_d *jrdev); +int caam_jr_probe(struct device_d *dev); +#endif /* INTERN_H */ |