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 */
30struct 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 */
39struct caam_drv_private_jr {
40	struct list_head	list_node;	/* Job Ring device list */
41	struct device		*dev;
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	/* Number of scatterlist crypt transforms active on the JobR */
48	atomic_t tfm_count ____cacheline_aligned;
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 platform_device **jrpdev; /* Alloc'ed array per sub-device */
70	struct platform_device *pdev;
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
88#define	RNG4_MAX_HANDLES 2
89	/* RNG4 block */
90	u32 rng4_sh_init;	/* This bitmap shows which of the State
91				   Handles of the RNG4 block are initialized
92				   by this driver */
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 */
114