1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * CAAM/SEC 4.x driver backend 4 * Private/internal definitions between modules 5 * 6 * Copyright 2008-2011 Freescale Semiconductor, Inc. 7 * 8 */ 9 10 #ifndef INTERN_H 11 #define INTERN_H 12 13 /* Currently comes from Kconfig param as a ^2 (driver-required) */ 14 #define JOBR_DEPTH (1 << CONFIG_CRYPTO_DEV_FSL_CAAM_RINGSIZE) 15 16 /* Kconfig params for interrupt coalescing if selected (else zero) */ 17 #ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_INTC 18 #define JOBR_INTC JRCFG_ICEN 19 #define JOBR_INTC_TIME_THLD CONFIG_CRYPTO_DEV_FSL_CAAM_INTC_TIME_THLD 20 #define JOBR_INTC_COUNT_THLD CONFIG_CRYPTO_DEV_FSL_CAAM_INTC_COUNT_THLD 21 #else 22 #define JOBR_INTC 0 23 #define JOBR_INTC_TIME_THLD 0 24 #define JOBR_INTC_COUNT_THLD 0 25 #endif 26 27 /* 28 * Storage for tracking each in-process entry moving across a ring 29 * Each entry on an output ring needs one of these 30 */ 31 struct caam_jrentry_info { 32 void (*callbk)(struct device *dev, u32 *desc, u32 status, void *arg); 33 void *cbkarg; /* Argument per ring entry */ 34 u32 *desc_addr_virt; /* Stored virt addr for postprocessing */ 35 dma_addr_t desc_addr_dma; /* Stored bus addr for done matching */ 36 u32 desc_size; /* Stored size for postprocessing, header derived */ 37 }; 38 39 /* Private sub-storage for a single JobR */ 40 struct caam_drv_private_jr { 41 struct list_head list_node; /* Job Ring device list */ 42 struct device *dev; 43 int ridx; 44 struct caam_job_ring __iomem *rregs; /* JobR's register space */ 45 struct tasklet_struct irqtask; 46 int irq; /* One per queue */ 47 48 /* Number of scatterlist crypt transforms active on the JobR */ 49 atomic_t tfm_count ____cacheline_aligned; 50 51 /* Job ring info */ 52 int ringsize; /* Size of rings (assume input = output) */ 53 struct caam_jrentry_info *entinfo; /* Alloc'ed 1 per ring entry */ 54 spinlock_t inplock ____cacheline_aligned; /* Input ring index lock */ 55 int inp_ring_write_index; /* Input index "tail" */ 56 int head; /* entinfo (s/w ring) head index */ 57 dma_addr_t *inpring; /* Base of input ring, alloc DMA-safe */ 58 spinlock_t outlock ____cacheline_aligned; /* Output ring index lock */ 59 int out_ring_read_index; /* Output index "tail" */ 60 int tail; /* entinfo (s/w ring) tail index */ 61 struct jr_outentry *outring; /* Base of output ring, DMA-safe */ 62 }; 63 64 /* 65 * Driver-private storage for a single CAAM block instance 66 */ 67 struct caam_drv_private { 68 #ifdef CONFIG_CAAM_QI 69 struct device *qidev; 70 #endif 71 72 /* Physical-presence section */ 73 struct caam_ctrl __iomem *ctrl; /* controller region */ 74 struct caam_deco __iomem *deco; /* DECO/CCB views */ 75 struct caam_assurance __iomem *assure; 76 struct caam_queue_if __iomem *qi; /* QI control region */ 77 struct caam_job_ring __iomem *jr[4]; /* JobR's register space */ 78 79 /* 80 * Detected geometry block. Filled in from device tree if powerpc, 81 * or from register-based version detection code 82 */ 83 u8 total_jobrs; /* Total Job Rings in device */ 84 u8 qi_present; /* Nonzero if QI present in device */ 85 int secvio_irq; /* Security violation interrupt number */ 86 int virt_en; /* Virtualization enabled in CAAM */ 87 int era; /* CAAM Era (internal HW revision) */ 88 89 #define RNG4_MAX_HANDLES 2 90 /* RNG4 block */ 91 u32 rng4_sh_init; /* This bitmap shows which of the State 92 Handles of the RNG4 block are initialized 93 by this driver */ 94 95 struct clk *caam_ipg; 96 struct clk *caam_mem; 97 struct clk *caam_aclk; 98 struct clk *caam_emi_slow; 99 100 /* 101 * debugfs entries for developer view into driver/device 102 * variables at runtime. 103 */ 104 #ifdef CONFIG_DEBUG_FS 105 struct dentry *dfs_root; 106 struct dentry *ctl; /* controller dir */ 107 struct debugfs_blob_wrapper ctl_kek_wrap, ctl_tkek_wrap, ctl_tdsk_wrap; 108 struct dentry *ctl_kek, *ctl_tkek, *ctl_tdsk; 109 #endif 110 }; 111 112 void caam_jr_algapi_init(struct device *dev); 113 void caam_jr_algapi_remove(struct device *dev); 114 115 #ifdef CONFIG_DEBUG_FS 116 static int caam_debugfs_u64_get(void *data, u64 *val) 117 { 118 *val = caam64_to_cpu(*(u64 *)data); 119 return 0; 120 } 121 122 static int caam_debugfs_u32_get(void *data, u64 *val) 123 { 124 *val = caam32_to_cpu(*(u32 *)data); 125 return 0; 126 } 127 128 DEFINE_SIMPLE_ATTRIBUTE(caam_fops_u32_ro, caam_debugfs_u32_get, NULL, "%llu\n"); 129 DEFINE_SIMPLE_ATTRIBUTE(caam_fops_u64_ro, caam_debugfs_u64_get, NULL, "%llu\n"); 130 #endif 131 132 #endif /* INTERN_H */ 133