tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#define JOBR_UNASSIGNED 0
13#define JOBR_ASSIGNED 1
14
15/* Currently comes from Kconfig param as a ^2 (driver-required) */
16#define JOBR_DEPTH (1 << CONFIG_CRYPTO_DEV_FSL_CAAM_RINGSIZE)
17
18/* Kconfig params for interrupt coalescing if selected (else zero) */
19#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_INTC
20#define JOBR_INTC JRCFG_ICEN
21#define JOBR_INTC_TIME_THLD CONFIG_CRYPTO_DEV_FSL_CAAM_INTC_TIME_THLD
22#define JOBR_INTC_COUNT_THLD CONFIG_CRYPTO_DEV_FSL_CAAM_INTC_COUNT_THLD
23#else
24#define JOBR_INTC 0
25#define JOBR_INTC_TIME_THLD 0
26#define JOBR_INTC_COUNT_THLD 0
27#endif
28
29/*
30 * Storage for tracking each in-process entry moving across a ring
31 * Each entry on an output ring needs one of these
32 */
33struct caam_jrentry_info {
34 void (*callbk)(struct device *dev, u32 *desc, u32 status, void *arg);
35 void *cbkarg; /* Argument per ring entry */
36 u32 *desc_addr_virt; /* Stored virt addr for postprocessing */
37 dma_addr_t desc_addr_dma; /* Stored bus addr for done matching */
38 u32 desc_size; /* Stored size for postprocessing, header derived */
39};
40
41/* Private sub-storage for a single JobR */
42struct caam_drv_private_jr {
43 struct device *parentdev; /* points back to controller dev */
44 int ridx;
45 struct caam_job_ring __iomem *rregs; /* JobR's register space */
46 struct tasklet_struct irqtask[NR_CPUS];
47 int irq; /* One per queue */
48 int assign; /* busy/free */
49
50 /* Job ring info */
51 int ringsize; /* Size of rings (assume input = output) */
52 struct caam_jrentry_info *entinfo; /* Alloc'ed 1 per ring entry */
53 spinlock_t inplock ____cacheline_aligned; /* Input ring index lock */
54 int inp_ring_write_index; /* Input index "tail" */
55 int head; /* entinfo (s/w ring) head index */
56 dma_addr_t *inpring; /* Base of input ring, alloc DMA-safe */
57 spinlock_t outlock ____cacheline_aligned; /* Output ring index lock */
58 int out_ring_read_index; /* Output index "tail" */
59 int tail; /* entinfo (s/w ring) tail index */
60 struct jr_outentry *outring; /* Base of output ring, DMA-safe */
61};
62
63/*
64 * Driver-private storage for a single CAAM block instance
65 */
66struct caam_drv_private {
67
68 struct device *dev;
69 struct device **jrdev; /* Alloc'ed array per sub-device */
70 spinlock_t jr_alloc_lock;
71 struct platform_device *pdev;
72
73 /* Physical-presence section */
74 struct caam_ctrl *ctrl; /* controller region */
75 struct caam_deco **deco; /* DECO/CCB views */
76 struct caam_assurance *ac;
77 struct caam_queue_if *qi; /* QI control region */
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
87 /* which jr allocated to scatterlist crypto */
88 atomic_t tfm_count ____cacheline_aligned;
89 int num_jrs_for_algapi;
90 struct device **algapi_jr;
91 /* list of registered crypto algorithms (mk generic context handle?) */
92 struct list_head alg_list;
93
94 /*
95 * debugfs entries for developer view into driver/device
96 * variables at runtime.
97 */
98#ifdef CONFIG_DEBUG_FS
99 struct dentry *dfs_root;
100 struct dentry *ctl; /* controller dir */
101 struct dentry *ctl_rq_dequeued, *ctl_ob_enc_req, *ctl_ib_dec_req;
102 struct dentry *ctl_ob_enc_bytes, *ctl_ob_prot_bytes;
103 struct dentry *ctl_ib_dec_bytes, *ctl_ib_valid_bytes;
104 struct dentry *ctl_faultaddr, *ctl_faultdetail, *ctl_faultstatus;
105
106 struct debugfs_blob_wrapper ctl_kek_wrap, ctl_tkek_wrap, ctl_tdsk_wrap;
107 struct dentry *ctl_kek, *ctl_tkek, *ctl_tdsk;
108#endif
109};
110
111void caam_jr_algapi_init(struct device *dev);
112void caam_jr_algapi_remove(struct device *dev);
113#endif /* INTERN_H */