[linux-2.6-block.git] / drivers / crypto / caam / intern.h

/*
 * CAAM/SEC 4.x driver backend
 * Private/internal definitions between modules
 *
 * Copyright 2008-2011 Freescale Semiconductor, Inc.
 *
 */

#ifndef INTERN_H
#define INTERN_H

#define JOBR_UNASSIGNED 0
#define JOBR_ASSIGNED 1

/* Currently comes from Kconfig param as a ^2 (driver-required) */
#define JOBR_DEPTH (1 << CONFIG_CRYPTO_DEV_FSL_CAAM_RINGSIZE)

/* Kconfig params for interrupt coalescing if selected (else zero) */
#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_INTC
#define JOBR_INTC JRCFG_ICEN
#define JOBR_INTC_TIME_THLD CONFIG_CRYPTO_DEV_FSL_CAAM_INTC_TIME_THLD
#define JOBR_INTC_COUNT_THLD CONFIG_CRYPTO_DEV_FSL_CAAM_INTC_COUNT_THLD
#else
#define JOBR_INTC 0
#define JOBR_INTC_TIME_THLD 0
#define JOBR_INTC_COUNT_THLD 0
#endif

/*
 * Storage for tracking each in-process entry moving across a ring
 * Each entry on an output ring needs one of these
 */
struct caam_jrentry_info {
	void (*callbk)(struct device *dev, u32 *desc, u32 status, void *arg);
	void *cbkarg;	/* Argument per ring entry */
	u32 *desc_addr_virt;	/* Stored virt addr for postprocessing */
	dma_addr_t desc_addr_dma;	/* Stored bus addr for done matching */
	u32 desc_size;	/* Stored size for postprocessing, header derived */
};

/* Private sub-storage for a single JobR */
struct caam_drv_private_jr {
	struct device *parentdev;	/* points back to controller dev */
	struct platform_device *jr_pdev;/* points to platform device for JR */
	int ridx;
	struct caam_job_ring __iomem *rregs;	/* JobR's register space */
	struct tasklet_struct irqtask;
	int irq;			/* One per queue */
	int assign;			/* busy/free */

	/* Job ring info */
	int ringsize;	/* Size of rings (assume input = output) */
	struct caam_jrentry_info *entinfo;	/* Alloc'ed 1 per ring entry */
	spinlock_t inplock ____cacheline_aligned; /* Input ring index lock */
	int inp_ring_write_index;	/* Input index "tail" */
	int head;			/* entinfo (s/w ring) head index */
	dma_addr_t *inpring;	/* Base of input ring, alloc DMA-safe */
	spinlock_t outlock ____cacheline_aligned; /* Output ring index lock */
	int out_ring_read_index;	/* Output index "tail" */
	int tail;			/* entinfo (s/w ring) tail index */
	struct jr_outentry *outring;	/* Base of output ring, DMA-safe */
};

/*
 * Driver-private storage for a single CAAM block instance
 */
struct caam_drv_private {

	struct device *dev;
	struct device **jrdev; /* Alloc'ed array per sub-device */
	spinlock_t jr_alloc_lock;
	struct platform_device *pdev;

	/* Physical-presence section */
	struct caam_ctrl *ctrl; /* controller region */
	struct caam_deco **deco; /* DECO/CCB views */
	struct caam_assurance *ac;
	struct caam_queue_if *qi; /* QI control region */

	/*
	 * Detected geometry block. Filled in from device tree if powerpc,
	 * or from register-based version detection code
	 */
	u8 total_jobrs;		/* Total Job Rings in device */
	u8 qi_present;		/* Nonzero if QI present in device */
	int secvio_irq;		/* Security violation interrupt number */

	/* which jr allocated to scatterlist crypto */
	atomic_t tfm_count ____cacheline_aligned;
	/* list of registered crypto algorithms (mk generic context handle?) */
	struct list_head alg_list;
	/* list of registered hash algorithms (mk generic context handle?) */
	struct list_head hash_list;

	/*
	 * debugfs entries for developer view into driver/device
	 * variables at runtime.
	 */
#ifdef CONFIG_DEBUG_FS
	struct dentry *dfs_root;
	struct dentry *ctl; /* controller dir */
	struct dentry *ctl_rq_dequeued, *ctl_ob_enc_req, *ctl_ib_dec_req;
	struct dentry *ctl_ob_enc_bytes, *ctl_ob_prot_bytes;
	struct dentry *ctl_ib_dec_bytes, *ctl_ib_valid_bytes;
	struct dentry *ctl_faultaddr, *ctl_faultdetail, *ctl_faultstatus;

	struct debugfs_blob_wrapper ctl_kek_wrap, ctl_tkek_wrap, ctl_tdsk_wrap;
	struct dentry *ctl_kek, *ctl_tkek, *ctl_tdsk;
#endif
};

void caam_jr_algapi_init(struct device *dev);
void caam_jr_algapi_remove(struct device *dev);
#endif /* INTERN_H */
Commit	Line	Data
8e8ec596 KP	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	*/
	33	struct 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 */
	42	struct caam_drv_private_jr {
	43	struct device parentdev; / points back to controller dev */
3862de1f	44	struct platform_device jr_pdev;/ points to platform device for JR */
8e8ec596 KP	45	int ridx;
8e8ec596 KP	46	struct caam_job_ring __iomem rregs; / JobR's register space */
a0ca6ca0	47	struct tasklet_struct irqtask;
8e8ec596 KP	48	int irq; /* One per queue */
	49	int assign; /* busy/free */
	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
	69	struct device *dev;
	70	struct device *jrdev; / Alloc'ed array per sub-device */
	71	spinlock_t jr_alloc_lock;
	72	struct platform_device *pdev;
	73
	74	/* Physical-presence section */
	75	struct caam_ctrl ctrl; / controller region */
	76	struct caam_deco *deco; / DECO/CCB views */
	77	struct caam_assurance *ac;
	78	struct caam_queue_if qi; / QI control region */
	79
	80	/*
	81	* Detected geometry block. Filled in from device tree if powerpc,
	82	* or from register-based version detection code
	83	*/
	84	u8 total_jobrs; /* Total Job Rings in device */
	85	u8 qi_present; /* Nonzero if QI present in device */
	86	int secvio_irq; /* Security violation interrupt number */
	87
	88	/* which jr allocated to scatterlist crypto */
	89	atomic_t tfm_count ____cacheline_aligned;
8e8ec596 KP	90	/* list of registered crypto algorithms (mk generic context handle?) */
8e8ec596 KP	91	struct list_head alg_list;
045e3678 YK	92	/* list of registered hash algorithms (mk generic context handle?) */
045e3678 YK	93	struct list_head hash_list;
8e8ec596 KP	94
	95	/*
	96	* debugfs entries for developer view into driver/device
	97	* variables at runtime.
	98	*/
	99	#ifdef CONFIG_DEBUG_FS
	100	struct dentry *dfs_root;
	101	struct dentry ctl; / controller dir */
	102	struct dentry ctl_rq_dequeued, ctl_ob_enc_req, *ctl_ib_dec_req;
	103	struct dentry ctl_ob_enc_bytes, ctl_ob_prot_bytes;
	104	struct dentry ctl_ib_dec_bytes, ctl_ib_valid_bytes;
	105	struct dentry ctl_faultaddr, ctl_faultdetail, *ctl_faultstatus;
	106
	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	#endif /* INTERN_H */