forked from Minki/linux
17157c90a8
For platforms with virtualization enabled
1. The job ring registers can be written to only is the job ring has been
started i.e STARTR bit in JRSTART register is 1
2. For DECO's under direct software control, with virtualization enabled
PL, BMT, ICID and SDID values need to be provided. These are provided by
selecting a Job ring in start mode whose parameters would be used for the
DECO access programming.
Signed-off-by: Ruchika Gupta <ruchika.gupta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
113 lines
3.7 KiB
C
113 lines
3.7 KiB
C
/*
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* CAAM/SEC 4.x driver backend
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* Private/internal definitions between modules
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*
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* Copyright 2008-2011 Freescale Semiconductor, Inc.
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*
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*/
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#ifndef INTERN_H
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#define INTERN_H
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/* Currently comes from Kconfig param as a ^2 (driver-required) */
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#define JOBR_DEPTH (1 << CONFIG_CRYPTO_DEV_FSL_CAAM_RINGSIZE)
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/* Kconfig params for interrupt coalescing if selected (else zero) */
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#ifdef CONFIG_CRYPTO_DEV_FSL_CAAM_INTC
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#define JOBR_INTC JRCFG_ICEN
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#define JOBR_INTC_TIME_THLD CONFIG_CRYPTO_DEV_FSL_CAAM_INTC_TIME_THLD
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#define JOBR_INTC_COUNT_THLD CONFIG_CRYPTO_DEV_FSL_CAAM_INTC_COUNT_THLD
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#else
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#define JOBR_INTC 0
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#define JOBR_INTC_TIME_THLD 0
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#define JOBR_INTC_COUNT_THLD 0
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#endif
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/*
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* Storage for tracking each in-process entry moving across a ring
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* Each entry on an output ring needs one of these
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*/
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struct caam_jrentry_info {
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void (*callbk)(struct device *dev, u32 *desc, u32 status, void *arg);
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void *cbkarg; /* Argument per ring entry */
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u32 *desc_addr_virt; /* Stored virt addr for postprocessing */
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dma_addr_t desc_addr_dma; /* Stored bus addr for done matching */
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u32 desc_size; /* Stored size for postprocessing, header derived */
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};
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/* Private sub-storage for a single JobR */
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struct caam_drv_private_jr {
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struct list_head list_node; /* Job Ring device list */
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struct device *dev;
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int ridx;
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struct caam_job_ring __iomem *rregs; /* JobR's register space */
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struct tasklet_struct irqtask;
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int irq; /* One per queue */
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/* Number of scatterlist crypt transforms active on the JobR */
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atomic_t tfm_count ____cacheline_aligned;
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/* Job ring info */
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int ringsize; /* Size of rings (assume input = output) */
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struct caam_jrentry_info *entinfo; /* Alloc'ed 1 per ring entry */
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spinlock_t inplock ____cacheline_aligned; /* Input ring index lock */
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int inp_ring_write_index; /* Input index "tail" */
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int head; /* entinfo (s/w ring) head index */
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dma_addr_t *inpring; /* Base of input ring, alloc DMA-safe */
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spinlock_t outlock ____cacheline_aligned; /* Output ring index lock */
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int out_ring_read_index; /* Output index "tail" */
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int tail; /* entinfo (s/w ring) tail index */
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struct jr_outentry *outring; /* Base of output ring, DMA-safe */
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};
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/*
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* Driver-private storage for a single CAAM block instance
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*/
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struct caam_drv_private {
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struct device *dev;
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struct platform_device **jrpdev; /* Alloc'ed array per sub-device */
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struct platform_device *pdev;
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/* Physical-presence section */
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struct caam_ctrl *ctrl; /* controller region */
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struct caam_deco **deco; /* DECO/CCB views */
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struct caam_assurance *ac;
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struct caam_queue_if *qi; /* QI control region */
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/*
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* Detected geometry block. Filled in from device tree if powerpc,
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* or from register-based version detection code
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*/
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u8 total_jobrs; /* Total Job Rings in device */
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u8 qi_present; /* Nonzero if QI present in device */
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int secvio_irq; /* Security violation interrupt number */
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int virt_en; /* Virtualization enabled in CAAM */
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#define RNG4_MAX_HANDLES 2
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/* RNG4 block */
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u32 rng4_sh_init; /* This bitmap shows which of the State
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Handles of the RNG4 block are initialized
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by this driver */
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/*
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* debugfs entries for developer view into driver/device
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* variables at runtime.
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*/
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#ifdef CONFIG_DEBUG_FS
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struct dentry *dfs_root;
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struct dentry *ctl; /* controller dir */
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struct dentry *ctl_rq_dequeued, *ctl_ob_enc_req, *ctl_ib_dec_req;
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struct dentry *ctl_ob_enc_bytes, *ctl_ob_prot_bytes;
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struct dentry *ctl_ib_dec_bytes, *ctl_ib_valid_bytes;
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struct dentry *ctl_faultaddr, *ctl_faultdetail, *ctl_faultstatus;
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struct debugfs_blob_wrapper ctl_kek_wrap, ctl_tkek_wrap, ctl_tdsk_wrap;
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struct dentry *ctl_kek, *ctl_tkek, *ctl_tdsk;
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#endif
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};
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void caam_jr_algapi_init(struct device *dev);
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void caam_jr_algapi_remove(struct device *dev);
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#endif /* INTERN_H */
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