210 lines
5.4 KiB
C
210 lines
5.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */
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/* \file cc_driver.h
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* ARM CryptoCell Linux Crypto Driver
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*/
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#ifndef __CC_DRIVER_H__
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#define __CC_DRIVER_H__
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#ifdef COMP_IN_WQ
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#include <linux/workqueue.h>
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#else
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#include <linux/interrupt.h>
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#endif
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#include <linux/dma-mapping.h>
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#include <crypto/algapi.h>
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#include <crypto/internal/skcipher.h>
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#include <crypto/aes.h>
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#include <crypto/sha.h>
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#include <crypto/aead.h>
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#include <crypto/authenc.h>
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#include <crypto/hash.h>
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#include <crypto/skcipher.h>
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#include <linux/version.h>
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#include <linux/clk.h>
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#include <linux/platform_device.h>
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/* Registers definitions from shared/hw/ree_include */
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#include "cc_host_regs.h"
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#define CC_DEV_SHA_MAX 512
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#include "cc_crypto_ctx.h"
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#include "cc_hw_queue_defs.h"
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#include "cc_sram_mgr.h"
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extern bool cc_dump_desc;
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extern bool cc_dump_bytes;
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#define DRV_MODULE_VERSION "4.0"
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enum cc_hw_rev {
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CC_HW_REV_630 = 630,
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CC_HW_REV_710 = 710,
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CC_HW_REV_712 = 712
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};
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#define CC_COHERENT_CACHE_PARAMS 0xEEE
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/* Maximum DMA mask supported by IP */
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#define DMA_BIT_MASK_LEN 48
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#define CC_AXI_IRQ_MASK ((1 << CC_AXIM_CFG_BRESPMASK_BIT_SHIFT) | \
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(1 << CC_AXIM_CFG_RRESPMASK_BIT_SHIFT) | \
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(1 << CC_AXIM_CFG_INFLTMASK_BIT_SHIFT) | \
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(1 << CC_AXIM_CFG_COMPMASK_BIT_SHIFT))
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#define CC_AXI_ERR_IRQ_MASK BIT(CC_HOST_IRR_AXI_ERR_INT_BIT_SHIFT)
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#define CC_COMP_IRQ_MASK BIT(CC_HOST_IRR_AXIM_COMP_INT_BIT_SHIFT)
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#define AXIM_MON_COMP_VALUE GENMASK(CC_AXIM_MON_COMP_VALUE_BIT_SIZE + \
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CC_AXIM_MON_COMP_VALUE_BIT_SHIFT, \
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CC_AXIM_MON_COMP_VALUE_BIT_SHIFT)
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/* Register name mangling macro */
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#define CC_REG(reg_name) CC_ ## reg_name ## _REG_OFFSET
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/* TEE FIPS status interrupt */
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#define CC_GPR0_IRQ_MASK BIT(CC_HOST_IRR_GPR0_BIT_SHIFT)
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#define CC_CRA_PRIO 400
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#define MIN_HW_QUEUE_SIZE 50 /* Minimum size required for proper function */
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#define MAX_REQUEST_QUEUE_SIZE 4096
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#define MAX_MLLI_BUFF_SIZE 2080
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#define MAX_ICV_NENTS_SUPPORTED 2
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/* Definitions for HW descriptors DIN/DOUT fields */
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#define NS_BIT 1
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#define AXI_ID 0
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/* AXI_ID is not actually the AXI ID of the transaction but the value of AXI_ID
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* field in the HW descriptor. The DMA engine +8 that value.
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*/
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#define CC_MAX_IVGEN_DMA_ADDRESSES 3
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struct cc_crypto_req {
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void (*user_cb)(struct device *dev, void *req, int err);
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void *user_arg;
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dma_addr_t ivgen_dma_addr[CC_MAX_IVGEN_DMA_ADDRESSES];
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/* For the first 'ivgen_dma_addr_len' addresses of this array,
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* generated IV would be placed in it by send_request().
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* Same generated IV for all addresses!
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*/
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/* Amount of 'ivgen_dma_addr' elements to be filled. */
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unsigned int ivgen_dma_addr_len;
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/* The generated IV size required, 8/16 B allowed. */
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unsigned int ivgen_size;
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struct completion seq_compl; /* request completion */
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};
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/**
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* struct cc_drvdata - driver private data context
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* @cc_base: virt address of the CC registers
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* @irq: device IRQ number
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* @irq_mask: Interrupt mask shadow (1 for masked interrupts)
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* @fw_ver: SeP loaded firmware version
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*/
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struct cc_drvdata {
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void __iomem *cc_base;
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int irq;
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u32 irq_mask;
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u32 fw_ver;
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struct completion hw_queue_avail; /* wait for HW queue availability */
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struct platform_device *plat_dev;
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cc_sram_addr_t mlli_sram_addr;
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void *buff_mgr_handle;
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void *cipher_handle;
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void *hash_handle;
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void *aead_handle;
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void *request_mgr_handle;
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void *fips_handle;
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void *ivgen_handle;
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void *sram_mgr_handle;
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void *debugfs;
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struct clk *clk;
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bool coherent;
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char *hw_rev_name;
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enum cc_hw_rev hw_rev;
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u32 hash_len_sz;
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u32 axim_mon_offset;
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u32 sig_offset;
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u32 ver_offset;
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};
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struct cc_crypto_alg {
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struct list_head entry;
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int cipher_mode;
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int flow_mode; /* Note: currently, refers to the cipher mode only. */
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int auth_mode;
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unsigned int data_unit;
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struct cc_drvdata *drvdata;
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struct skcipher_alg skcipher_alg;
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struct aead_alg aead_alg;
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};
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struct cc_alg_template {
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char name[CRYPTO_MAX_ALG_NAME];
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char driver_name[CRYPTO_MAX_ALG_NAME];
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unsigned int blocksize;
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union {
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struct skcipher_alg skcipher;
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struct aead_alg aead;
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} template_u;
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int cipher_mode;
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int flow_mode; /* Note: currently, refers to the cipher mode only. */
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int auth_mode;
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u32 min_hw_rev;
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unsigned int data_unit;
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struct cc_drvdata *drvdata;
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};
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struct async_gen_req_ctx {
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dma_addr_t iv_dma_addr;
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enum drv_crypto_direction op_type;
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};
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static inline struct device *drvdata_to_dev(struct cc_drvdata *drvdata)
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{
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return &drvdata->plat_dev->dev;
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}
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void __dump_byte_array(const char *name, const u8 *buf, size_t len);
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static inline void dump_byte_array(const char *name, const u8 *the_array,
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size_t size)
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{
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if (cc_dump_bytes)
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__dump_byte_array(name, the_array, size);
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}
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int init_cc_regs(struct cc_drvdata *drvdata, bool is_probe);
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void fini_cc_regs(struct cc_drvdata *drvdata);
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int cc_clk_on(struct cc_drvdata *drvdata);
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void cc_clk_off(struct cc_drvdata *drvdata);
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static inline void cc_iowrite(struct cc_drvdata *drvdata, u32 reg, u32 val)
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{
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iowrite32(val, (drvdata->cc_base + reg));
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}
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static inline u32 cc_ioread(struct cc_drvdata *drvdata, u32 reg)
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{
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return ioread32(drvdata->cc_base + reg);
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}
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static inline gfp_t cc_gfp_flags(struct crypto_async_request *req)
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{
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return (req->flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
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GFP_KERNEL : GFP_ATOMIC;
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}
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static inline void set_queue_last_ind(struct cc_drvdata *drvdata,
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struct cc_hw_desc *pdesc)
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{
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if (drvdata->hw_rev >= CC_HW_REV_712)
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set_queue_last_ind_bit(pdesc);
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}
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#endif /*__CC_DRIVER_H__*/
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