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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 */
31struct 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 */
40struct 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 */
67struct 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 u8 mc_en; /* Nonzero if MC f/w is active */
86 int secvio_irq; /* Security violation interrupt number */
87 int virt_en; /* Virtualization enabled in CAAM */
88 int era; /* CAAM Era (internal HW revision) */
89
90#define RNG4_MAX_HANDLES 2
91 /* RNG4 block */
92 u32 rng4_sh_init; /* This bitmap shows which of the State
93 Handles of the RNG4 block are initialized
94 by this driver */
95
96 struct clk *caam_ipg;
97 struct clk *caam_mem;
98 struct clk *caam_aclk;
99 struct clk *caam_emi_slow;
100
101 /*
102 * debugfs entries for developer view into driver/device
103 * variables at runtime.
104 */
105#ifdef CONFIG_DEBUG_FS
106 struct dentry *dfs_root;
107 struct dentry *ctl; /* controller dir */
108 struct debugfs_blob_wrapper ctl_kek_wrap, ctl_tkek_wrap, ctl_tdsk_wrap;
109 struct dentry *ctl_kek, *ctl_tkek, *ctl_tdsk;
110#endif
111};
112
113void caam_jr_algapi_init(struct device *dev);
114void caam_jr_algapi_remove(struct device *dev);
115
116#ifdef CONFIG_DEBUG_FS
117static int caam_debugfs_u64_get(void *data, u64 *val)
118{
119 *val = caam64_to_cpu(*(u64 *)data);
120 return 0;
121}
122
123static int caam_debugfs_u32_get(void *data, u64 *val)
124{
125 *val = caam32_to_cpu(*(u32 *)data);
126 return 0;
127}
128
129DEFINE_SIMPLE_ATTRIBUTE(caam_fops_u32_ro, caam_debugfs_u32_get, NULL, "%llu\n");
130DEFINE_SIMPLE_ATTRIBUTE(caam_fops_u64_ro, caam_debugfs_u64_get, NULL, "%llu\n");
131#endif
132
133#endif /* INTERN_H */