1 /* 2 * CAAM/SEC 4.x driver backend 3 * Private/internal definitions between modules 4 * 5 * Copyright 2008-2011 Freescale Semiconductor, Inc. 6 * 7 */ 8 9 #ifndef INTERN_H 10 #define INTERN_H 11 12 /* Currently comes from Kconfig param as a ^2 (driver-required) */ 13 #define JOBR_DEPTH (1 << CONFIG_CRYPTO_DEV_FSL_CAAM_RINGSIZE) 14 15 /* Kconfig params for interrupt coalescing if selected (else zero) */ 16 #ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_INTC 17 #define JOBR_INTC JRCFG_ICEN 18 #define JOBR_INTC_TIME_THLD CONFIG_CRYPTO_DEV_FSL_CAAM_INTC_TIME_THLD 19 #define JOBR_INTC_COUNT_THLD CONFIG_CRYPTO_DEV_FSL_CAAM_INTC_COUNT_THLD 20 #else 21 #define JOBR_INTC 0 22 #define JOBR_INTC_TIME_THLD 0 23 #define JOBR_INTC_COUNT_THLD 0 24 #endif 25 26 /* 27 * Storage for tracking each in-process entry moving across a ring 28 * Each entry on an output ring needs one of these 29 */ 30 struct caam_jrentry_info { 31 void (*callbk)(struct device *dev, u32 *desc, u32 status, void *arg); 32 void *cbkarg; /* Argument per ring entry */ 33 u32 *desc_addr_virt; /* Stored virt addr for postprocessing */ 34 dma_addr_t desc_addr_dma; /* Stored bus addr for done matching */ 35 u32 desc_size; /* Stored size for postprocessing, header derived */ 36 }; 37 38 /* Private sub-storage for a single JobR */ 39 struct caam_drv_private_jr { 40 struct device *parentdev; /* points back to controller dev */ 41 struct platform_device *jr_pdev;/* points to platform device for JR */ 42 int ridx; 43 struct caam_job_ring __iomem *rregs; /* JobR's register space */ 44 struct tasklet_struct irqtask; 45 int irq; /* One per queue */ 46 47 /* Job ring info */ 48 int ringsize; /* Size of rings (assume input = output) */ 49 struct caam_jrentry_info *entinfo; /* Alloc'ed 1 per ring entry */ 50 spinlock_t inplock ____cacheline_aligned; /* Input ring index lock */ 51 int inp_ring_write_index; /* Input index "tail" */ 52 int head; /* entinfo (s/w ring) head index */ 53 dma_addr_t *inpring; /* Base of input ring, alloc DMA-safe */ 54 spinlock_t outlock ____cacheline_aligned; /* Output ring index lock */ 55 int out_ring_read_index; /* Output index "tail" */ 56 int tail; /* entinfo (s/w ring) tail index */ 57 struct jr_outentry *outring; /* Base of output ring, DMA-safe */ 58 }; 59 60 /* 61 * Driver-private storage for a single CAAM block instance 62 */ 63 struct caam_drv_private { 64 65 struct device *dev; 66 struct device **jrdev; /* Alloc'ed array per sub-device */ 67 struct platform_device *pdev; 68 69 /* Physical-presence section */ 70 struct caam_ctrl *ctrl; /* controller region */ 71 struct caam_deco **deco; /* DECO/CCB views */ 72 struct caam_assurance *ac; 73 struct caam_queue_if *qi; /* QI control region */ 74 75 /* 76 * Detected geometry block. Filled in from device tree if powerpc, 77 * or from register-based version detection code 78 */ 79 u8 total_jobrs; /* Total Job Rings in device */ 80 u8 qi_present; /* Nonzero if QI present in device */ 81 int secvio_irq; /* Security violation interrupt number */ 82 83 /* which jr allocated to scatterlist crypto */ 84 atomic_t tfm_count ____cacheline_aligned; 85 /* list of registered crypto algorithms (mk generic context handle?) */ 86 struct list_head alg_list; 87 /* list of registered hash algorithms (mk generic context handle?) */ 88 struct list_head hash_list; 89 90 /* 91 * debugfs entries for developer view into driver/device 92 * variables at runtime. 93 */ 94 #ifdef CONFIG_DEBUG_FS 95 struct dentry *dfs_root; 96 struct dentry *ctl; /* controller dir */ 97 struct dentry *ctl_rq_dequeued, *ctl_ob_enc_req, *ctl_ib_dec_req; 98 struct dentry *ctl_ob_enc_bytes, *ctl_ob_prot_bytes; 99 struct dentry *ctl_ib_dec_bytes, *ctl_ib_valid_bytes; 100 struct dentry *ctl_faultaddr, *ctl_faultdetail, *ctl_faultstatus; 101 102 struct debugfs_blob_wrapper ctl_kek_wrap, ctl_tkek_wrap, ctl_tdsk_wrap; 103 struct dentry *ctl_kek, *ctl_tkek, *ctl_tdsk; 104 #endif 105 }; 106 107 void caam_jr_algapi_init(struct device *dev); 108 void caam_jr_algapi_remove(struct device *dev); 109 #endif /* INTERN_H */ 110