134 lines
4.1 KiB
C
134 lines
4.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* CAAM/SEC 4.x driver backend
|
|
* Private/internal definitions between modules
|
|
*
|
|
* Copyright 2008-2011 Freescale Semiconductor, Inc.
|
|
*
|
|
*/
|
|
|
|
#ifndef INTERN_H
|
|
#define INTERN_H
|
|
|
|
/* 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 list_head list_node; /* Job Ring device list */
|
|
struct device *dev;
|
|
int ridx;
|
|
struct caam_job_ring __iomem *rregs; /* JobR's register space */
|
|
struct tasklet_struct irqtask;
|
|
int irq; /* One per queue */
|
|
|
|
/* Number of scatterlist crypt transforms active on the JobR */
|
|
atomic_t tfm_count ____cacheline_aligned;
|
|
|
|
/* 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 {
|
|
#ifdef CONFIG_CAAM_QI
|
|
struct device *qidev;
|
|
#endif
|
|
|
|
/* Physical-presence section */
|
|
struct caam_ctrl __iomem *ctrl; /* controller region */
|
|
struct caam_deco __iomem *deco; /* DECO/CCB views */
|
|
struct caam_assurance __iomem *assure;
|
|
struct caam_queue_if __iomem *qi; /* QI control region */
|
|
struct caam_job_ring __iomem *jr[4]; /* JobR's register space */
|
|
|
|
/*
|
|
* 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 */
|
|
u8 mc_en; /* Nonzero if MC f/w is active */
|
|
int secvio_irq; /* Security violation interrupt number */
|
|
int virt_en; /* Virtualization enabled in CAAM */
|
|
int era; /* CAAM Era (internal HW revision) */
|
|
|
|
#define RNG4_MAX_HANDLES 2
|
|
/* RNG4 block */
|
|
u32 rng4_sh_init; /* This bitmap shows which of the State
|
|
Handles of the RNG4 block are initialized
|
|
by this driver */
|
|
|
|
struct clk *caam_ipg;
|
|
struct clk *caam_mem;
|
|
struct clk *caam_aclk;
|
|
struct clk *caam_emi_slow;
|
|
|
|
/*
|
|
* 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 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);
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
static int caam_debugfs_u64_get(void *data, u64 *val)
|
|
{
|
|
*val = caam64_to_cpu(*(u64 *)data);
|
|
return 0;
|
|
}
|
|
|
|
static int caam_debugfs_u32_get(void *data, u64 *val)
|
|
{
|
|
*val = caam32_to_cpu(*(u32 *)data);
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_SIMPLE_ATTRIBUTE(caam_fops_u32_ro, caam_debugfs_u32_get, NULL, "%llu\n");
|
|
DEFINE_SIMPLE_ATTRIBUTE(caam_fops_u64_ro, caam_debugfs_u64_get, NULL, "%llu\n");
|
|
#endif
|
|
|
|
#endif /* INTERN_H */
|