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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 * Copyright 2019, 2023 NXP
8 */
9
10#ifndef INTERN_H
11#define INTERN_H
12
13#include "ctrl.h"
14#include <crypto/engine.h>
15
16/* Currently comes from Kconfig param as a ^2 (driver-required) */
17#define JOBR_DEPTH (1 << CONFIG_CRYPTO_DEV_FSL_CAAM_RINGSIZE)
18
19/*
20 * Maximum size for crypto-engine software queue based on Job Ring
21 * size (JOBR_DEPTH) and a THRESHOLD (reserved for the non-crypto-API
22 * requests that are not passed through crypto-engine)
23 */
24#define THRESHOLD 15
25#define CRYPTO_ENGINE_MAX_QLEN (JOBR_DEPTH - THRESHOLD)
26
27/* Kconfig params for interrupt coalescing if selected (else zero) */
28#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_INTC
29#define JOBR_INTC JRCFG_ICEN
30#define JOBR_INTC_TIME_THLD CONFIG_CRYPTO_DEV_FSL_CAAM_INTC_TIME_THLD
31#define JOBR_INTC_COUNT_THLD CONFIG_CRYPTO_DEV_FSL_CAAM_INTC_COUNT_THLD
32#else
33#define JOBR_INTC 0
34#define JOBR_INTC_TIME_THLD 0
35#define JOBR_INTC_COUNT_THLD 0
36#endif
37
38/*
39 * Storage for tracking each in-process entry moving across a ring
40 * Each entry on an output ring needs one of these
41 */
42struct caam_jrentry_info {
43 void (*callbk)(struct device *dev, u32 *desc, u32 status, void *arg);
44 void *cbkarg; /* Argument per ring entry */
45 u32 *desc_addr_virt; /* Stored virt addr for postprocessing */
46 dma_addr_t desc_addr_dma; /* Stored bus addr for done matching */
47 u32 desc_size; /* Stored size for postprocessing, header derived */
48};
49
50struct caam_jr_state {
51 dma_addr_t inpbusaddr;
52 dma_addr_t outbusaddr;
53};
54
55struct caam_jr_dequeue_params {
56 struct device *dev;
57 int enable_itr;
58};
59
60/* Private sub-storage for a single JobR */
61struct caam_drv_private_jr {
62 struct list_head list_node; /* Job Ring device list */
63 struct device *dev;
64 int ridx;
65 struct caam_job_ring __iomem *rregs; /* JobR's register space */
66 struct tasklet_struct irqtask;
67 struct caam_jr_dequeue_params tasklet_params;
68 int irq; /* One per queue */
69 bool hwrng;
70
71 /* Number of scatterlist crypt transforms active on the JobR */
72 atomic_t tfm_count ____cacheline_aligned;
73
74 /* Job ring info */
75 struct caam_jrentry_info *entinfo; /* Alloc'ed 1 per ring entry */
76 spinlock_t inplock ____cacheline_aligned; /* Input ring index lock */
77 u32 inpring_avail; /* Number of free entries in input ring */
78 int head; /* entinfo (s/w ring) head index */
79 void *inpring; /* Base of input ring, alloc
80 * DMA-safe */
81 int out_ring_read_index; /* Output index "tail" */
82 int tail; /* entinfo (s/w ring) tail index */
83 void *outring; /* Base of output ring, DMA-safe */
84 struct crypto_engine *engine;
85
86 struct caam_jr_state state; /* State of the JR during PM */
87};
88
89struct caam_ctl_state {
90 struct masterid deco_mid[16];
91 struct masterid jr_mid[4];
92 u32 mcr;
93 u32 scfgr;
94};
95
96/*
97 * Driver-private storage for a single CAAM block instance
98 */
99struct caam_drv_private {
100 /* Physical-presence section */
101 struct caam_ctrl __iomem *ctrl; /* controller region */
102 struct caam_deco __iomem *deco; /* DECO/CCB views */
103 struct caam_assurance __iomem *assure;
104 struct caam_queue_if __iomem *qi; /* QI control region */
105 struct caam_job_ring __iomem *jr[4]; /* JobR's register space */
106
107 struct iommu_domain *domain;
108
109 /*
110 * Detected geometry block. Filled in from device tree if powerpc,
111 * or from register-based version detection code
112 */
113 u8 total_jobrs; /* Total Job Rings in device */
114 u8 qi_present; /* Nonzero if QI present in device */
115 u8 blob_present; /* Nonzero if BLOB support present in device */
116 u8 mc_en; /* Nonzero if MC f/w is active */
117 u8 optee_en; /* Nonzero if OP-TEE f/w is active */
118 bool pr_support; /* RNG prediction resistance available */
119 int secvio_irq; /* Security violation interrupt number */
120 int virt_en; /* Virtualization enabled in CAAM */
121 int era; /* CAAM Era (internal HW revision) */
122
123#define RNG4_MAX_HANDLES 2
124 /* RNG4 block */
125 u32 rng4_sh_init; /* This bitmap shows which of the State
126 Handles of the RNG4 block are initialized
127 by this driver */
128
129 struct clk_bulk_data *clks;
130 int num_clks;
131 /*
132 * debugfs entries for developer view into driver/device
133 * variables at runtime.
134 */
135#ifdef CONFIG_DEBUG_FS
136 struct dentry *ctl; /* controller dir */
137 struct debugfs_blob_wrapper ctl_kek_wrap, ctl_tkek_wrap, ctl_tdsk_wrap;
138#endif
139
140 int caam_off_during_pm; /* If the CAAM is reset after suspend */
141 struct caam_ctl_state state; /* State of the CTL during PM */
142};
143
144#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API
145
146int caam_algapi_init(struct device *dev);
147void caam_algapi_exit(void);
148
149#else
150
151static inline int caam_algapi_init(struct device *dev)
152{
153 return 0;
154}
155
156static inline void caam_algapi_exit(void)
157{
158}
159
160#endif /* CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API */
161
162#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_AHASH_API
163
164int caam_algapi_hash_init(struct device *dev);
165void caam_algapi_hash_exit(void);
166
167#else
168
169static inline int caam_algapi_hash_init(struct device *dev)
170{
171 return 0;
172}
173
174static inline void caam_algapi_hash_exit(void)
175{
176}
177
178#endif /* CONFIG_CRYPTO_DEV_FSL_CAAM_AHASH_API */
179
180#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_PKC_API
181
182int caam_pkc_init(struct device *dev);
183void caam_pkc_exit(void);
184
185#else
186
187static inline int caam_pkc_init(struct device *dev)
188{
189 return 0;
190}
191
192static inline void caam_pkc_exit(void)
193{
194}
195
196#endif /* CONFIG_CRYPTO_DEV_FSL_CAAM_PKC_API */
197
198#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_RNG_API
199
200int caam_rng_init(struct device *dev);
201void caam_rng_exit(struct device *dev);
202
203#else
204
205static inline int caam_rng_init(struct device *dev)
206{
207 return 0;
208}
209
210static inline void caam_rng_exit(struct device *dev) {}
211
212#endif /* CONFIG_CRYPTO_DEV_FSL_CAAM_RNG_API */
213
214#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_PRNG_API
215
216int caam_prng_register(struct device *dev);
217void caam_prng_unregister(void *data);
218
219#else
220
221static inline int caam_prng_register(struct device *dev)
222{
223 return 0;
224}
225
226static inline void caam_prng_unregister(void *data) {}
227#endif /* CONFIG_CRYPTO_DEV_FSL_CAAM_PRNG_API */
228
229#ifdef CONFIG_CAAM_QI
230
231int caam_qi_algapi_init(struct device *dev);
232void caam_qi_algapi_exit(void);
233
234#else
235
236static inline int caam_qi_algapi_init(struct device *dev)
237{
238 return 0;
239}
240
241static inline void caam_qi_algapi_exit(void)
242{
243}
244
245#endif /* CONFIG_CAAM_QI */
246
247static inline u64 caam_get_dma_mask(struct device *dev)
248{
249 struct device_node *nprop = dev->of_node;
250
251 if (caam_ptr_sz != sizeof(u64))
252 return DMA_BIT_MASK(32);
253
254 if (caam_dpaa2)
255 return DMA_BIT_MASK(49);
256
257 if (of_device_is_compatible(nprop, "fsl,sec-v5.0-job-ring") ||
258 of_device_is_compatible(nprop, "fsl,sec-v5.0"))
259 return DMA_BIT_MASK(40);
260
261 return DMA_BIT_MASK(36);
262}
263
264
265#endif /* INTERN_H */
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 * Copyright 2019 NXP
8 */
9
10#ifndef INTERN_H
11#define INTERN_H
12
13#include "ctrl.h"
14#include <crypto/engine.h>
15
16/* Currently comes from Kconfig param as a ^2 (driver-required) */
17#define JOBR_DEPTH (1 << CONFIG_CRYPTO_DEV_FSL_CAAM_RINGSIZE)
18
19/* Kconfig params for interrupt coalescing if selected (else zero) */
20#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_INTC
21#define JOBR_INTC JRCFG_ICEN
22#define JOBR_INTC_TIME_THLD CONFIG_CRYPTO_DEV_FSL_CAAM_INTC_TIME_THLD
23#define JOBR_INTC_COUNT_THLD CONFIG_CRYPTO_DEV_FSL_CAAM_INTC_COUNT_THLD
24#else
25#define JOBR_INTC 0
26#define JOBR_INTC_TIME_THLD 0
27#define JOBR_INTC_COUNT_THLD 0
28#endif
29
30/*
31 * Storage for tracking each in-process entry moving across a ring
32 * Each entry on an output ring needs one of these
33 */
34struct caam_jrentry_info {
35 void (*callbk)(struct device *dev, u32 *desc, u32 status, void *arg);
36 void *cbkarg; /* Argument per ring entry */
37 u32 *desc_addr_virt; /* Stored virt addr for postprocessing */
38 dma_addr_t desc_addr_dma; /* Stored bus addr for done matching */
39 u32 desc_size; /* Stored size for postprocessing, header derived */
40};
41
42/* Private sub-storage for a single JobR */
43struct caam_drv_private_jr {
44 struct list_head list_node; /* Job Ring device list */
45 struct device *dev;
46 int ridx;
47 struct caam_job_ring __iomem *rregs; /* JobR's register space */
48 struct tasklet_struct irqtask;
49 int irq; /* One per queue */
50 bool hwrng;
51
52 /* Number of scatterlist crypt transforms active on the JobR */
53 atomic_t tfm_count ____cacheline_aligned;
54
55 /* Job ring info */
56 struct caam_jrentry_info *entinfo; /* Alloc'ed 1 per ring entry */
57 spinlock_t inplock ____cacheline_aligned; /* Input ring index lock */
58 u32 inpring_avail; /* Number of free entries in input ring */
59 int head; /* entinfo (s/w ring) head index */
60 void *inpring; /* Base of input ring, alloc
61 * DMA-safe */
62 int out_ring_read_index; /* Output index "tail" */
63 int tail; /* entinfo (s/w ring) tail index */
64 void *outring; /* Base of output ring, DMA-safe */
65 struct crypto_engine *engine;
66};
67
68/*
69 * Driver-private storage for a single CAAM block instance
70 */
71struct caam_drv_private {
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 struct iommu_domain *domain;
80
81 /*
82 * Detected geometry block. Filled in from device tree if powerpc,
83 * or from register-based version detection code
84 */
85 u8 total_jobrs; /* Total Job Rings in device */
86 u8 qi_present; /* Nonzero if QI present in device */
87 u8 mc_en; /* Nonzero if MC f/w is active */
88 int secvio_irq; /* Security violation interrupt number */
89 int virt_en; /* Virtualization enabled in CAAM */
90 int era; /* CAAM Era (internal HW revision) */
91
92#define RNG4_MAX_HANDLES 2
93 /* RNG4 block */
94 u32 rng4_sh_init; /* This bitmap shows which of the State
95 Handles of the RNG4 block are initialized
96 by this driver */
97
98 struct clk_bulk_data *clks;
99 int num_clks;
100 /*
101 * debugfs entries for developer view into driver/device
102 * variables at runtime.
103 */
104#ifdef CONFIG_DEBUG_FS
105 struct dentry *ctl; /* controller dir */
106 struct debugfs_blob_wrapper ctl_kek_wrap, ctl_tkek_wrap, ctl_tdsk_wrap;
107#endif
108};
109
110#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API
111
112int caam_algapi_init(struct device *dev);
113void caam_algapi_exit(void);
114
115#else
116
117static inline int caam_algapi_init(struct device *dev)
118{
119 return 0;
120}
121
122static inline void caam_algapi_exit(void)
123{
124}
125
126#endif /* CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API */
127
128#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_AHASH_API
129
130int caam_algapi_hash_init(struct device *dev);
131void caam_algapi_hash_exit(void);
132
133#else
134
135static inline int caam_algapi_hash_init(struct device *dev)
136{
137 return 0;
138}
139
140static inline void caam_algapi_hash_exit(void)
141{
142}
143
144#endif /* CONFIG_CRYPTO_DEV_FSL_CAAM_AHASH_API */
145
146#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_PKC_API
147
148int caam_pkc_init(struct device *dev);
149void caam_pkc_exit(void);
150
151#else
152
153static inline int caam_pkc_init(struct device *dev)
154{
155 return 0;
156}
157
158static inline void caam_pkc_exit(void)
159{
160}
161
162#endif /* CONFIG_CRYPTO_DEV_FSL_CAAM_PKC_API */
163
164#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_RNG_API
165
166int caam_rng_init(struct device *dev);
167void caam_rng_exit(struct device *dev);
168
169#else
170
171static inline int caam_rng_init(struct device *dev)
172{
173 return 0;
174}
175
176static inline void caam_rng_exit(struct device *dev) {}
177
178#endif /* CONFIG_CRYPTO_DEV_FSL_CAAM_RNG_API */
179
180#ifdef CONFIG_CAAM_QI
181
182int caam_qi_algapi_init(struct device *dev);
183void caam_qi_algapi_exit(void);
184
185#else
186
187static inline int caam_qi_algapi_init(struct device *dev)
188{
189 return 0;
190}
191
192static inline void caam_qi_algapi_exit(void)
193{
194}
195
196#endif /* CONFIG_CAAM_QI */
197
198#ifdef CONFIG_DEBUG_FS
199static int caam_debugfs_u64_get(void *data, u64 *val)
200{
201 *val = caam64_to_cpu(*(u64 *)data);
202 return 0;
203}
204
205static int caam_debugfs_u32_get(void *data, u64 *val)
206{
207 *val = caam32_to_cpu(*(u32 *)data);
208 return 0;
209}
210
211DEFINE_SIMPLE_ATTRIBUTE(caam_fops_u32_ro, caam_debugfs_u32_get, NULL, "%llu\n");
212DEFINE_SIMPLE_ATTRIBUTE(caam_fops_u64_ro, caam_debugfs_u64_get, NULL, "%llu\n");
213#endif
214
215static inline u64 caam_get_dma_mask(struct device *dev)
216{
217 struct device_node *nprop = dev->of_node;
218
219 if (caam_ptr_sz != sizeof(u64))
220 return DMA_BIT_MASK(32);
221
222 if (caam_dpaa2)
223 return DMA_BIT_MASK(49);
224
225 if (of_device_is_compatible(nprop, "fsl,sec-v5.0-job-ring") ||
226 of_device_is_compatible(nprop, "fsl,sec-v5.0"))
227 return DMA_BIT_MASK(40);
228
229 return DMA_BIT_MASK(36);
230}
231
232
233#endif /* INTERN_H */