2 * CAAM/SEC 4.x driver backend
3 * Private/internal definitions between modules
5 * Copyright 2008-2011 Freescale Semiconductor, Inc.
12 /* Currently comes from Kconfig param as a ^2 (driver-required) */
13 #define JOBR_DEPTH (1 << CONFIG_CRYPTO_DEV_FSL_CAAM_RINGSIZE)
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
22 #define JOBR_INTC_TIME_THLD 0
23 #define JOBR_INTC_COUNT_THLD 0
27 * Storage for tracking each in-process entry moving across a ring
28 * Each entry on an output ring needs one of these
30 struct 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 */
38 /* Private sub-storage for a single JobR */
39 struct caam_drv_private_jr {
40 struct list_head list_node; /* Job Ring device list */
43 struct caam_job_ring __iomem *rregs; /* JobR's register space */
44 struct tasklet_struct irqtask;
45 int irq; /* One per queue */
47 /* Number of scatterlist crypt transforms active on the JobR */
48 atomic_t tfm_count ____cacheline_aligned;
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 */
64 * Driver-private storage for a single CAAM block instance
66 struct caam_drv_private {
69 struct platform_device **jrpdev; /* Alloc'ed array per sub-device */
70 struct platform_device *pdev;
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 */
80 * Detected geometry block. Filled in from device tree if powerpc,
81 * or from register-based version detection code
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 */
88 #define RNG4_MAX_HANDLES 2
90 u32 rng4_sh_init; /* This bitmap shows which of the State
91 Handles of the RNG4 block are initialized
96 struct clk *caam_aclk;
97 struct clk *caam_emi_slow;
100 * debugfs entries for developer view into driver/device
101 * variables at runtime.
103 #ifdef CONFIG_DEBUG_FS
104 struct dentry *dfs_root;
105 struct dentry *ctl; /* controller dir */
106 struct dentry *ctl_rq_dequeued, *ctl_ob_enc_req, *ctl_ib_dec_req;
107 struct dentry *ctl_ob_enc_bytes, *ctl_ob_prot_bytes;
108 struct dentry *ctl_ib_dec_bytes, *ctl_ib_valid_bytes;
109 struct dentry *ctl_faultaddr, *ctl_faultdetail, *ctl_faultstatus;
111 struct debugfs_blob_wrapper ctl_kek_wrap, ctl_tkek_wrap, ctl_tdsk_wrap;
112 struct dentry *ctl_kek, *ctl_tkek, *ctl_tdsk;
116 void caam_jr_algapi_init(struct device *dev);
117 void caam_jr_algapi_remove(struct device *dev);
118 #endif /* INTERN_H */