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b9edc1ec86
Add a new kconfig option to allow non-secure world access
to the CAAM Job Ring.
This is needed, for example, when running linux without
OP-TEE services, as it's done on Colibri iMX7.
Fixes: 51f1357f3428 ("Revert "drivers/crypto/fsl: assign job-rings to non-TrustZone"")
Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
136 lines
3.3 KiB
C
136 lines
3.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright 2008-2014 Freescale Semiconductor, Inc.
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* Copyright 2021 NXP
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*
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*/
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#ifndef __JR_H
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#define __JR_H
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#include <linux/compiler.h>
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#include "fsl_sec.h"
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#include "type.h"
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#include <misc.h>
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#define JR_SIZE 4
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/* Timeout currently defined as 10 sec */
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#define CFG_USEC_DEQ_TIMEOUT 10000000U
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#define DEFAULT_JR_ID 0
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#define DEFAULT_JR_LIODN 0
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#define DEFAULT_IRQ 0 /* Interrupts not to be configured */
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#define MCFGR_SWRST ((uint32_t)(1)<<31) /* Software Reset */
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#define MCFGR_DMA_RST ((uint32_t)(1)<<28) /* DMA Reset */
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#define MCFGR_PS_SHIFT 16
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#define MCFGR_AWCACHE_SHIFT 8
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#define MCFGR_AWCACHE_MASK (0xf << MCFGR_AWCACHE_SHIFT)
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#define MCFGR_ARCACHE_SHIFT 12
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#define MCFGR_ARCACHE_MASK (0xf << MCFGR_ARCACHE_SHIFT)
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#define JR_INTMASK 0x00000001
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#define JRCR_RESET 0x01
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#define JRINT_ERR_HALT_INPROGRESS 0x4
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#define JRINT_ERR_HALT_MASK 0xc
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#define JRNSLIODN_SHIFT 16
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#define JRNSLIODN_MASK 0x0fff0000
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#define JRSLIODN_SHIFT 0
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#define JRSLIODN_MASK 0x00000fff
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#define JROWN_NS 0x00000008
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#define JRMID_NS 0x00000001
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#define JRDID_MS_PRIM_DID BIT(0)
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#define JRDID_MS_PRIM_TZ BIT(4)
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#define JRDID_MS_TZ_OWN BIT(15)
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#define JQ_DEQ_ERR (-1)
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#define JQ_DEQ_TO_ERR (-2)
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#define JQ_ENQ_ERR (-3)
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#define RNG4_MAX_HANDLES 2
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enum {
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/* Run caam jobring descriptor(in buf) */
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CAAM_JR_RUN_DESC,
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};
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struct op_ring {
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caam_dma_addr_t desc;
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uint32_t status;
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} __packed;
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struct jr_info {
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void (*callback)(uint32_t status, void *arg);
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caam_dma_addr_t desc_phys_addr;
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uint32_t desc_len;
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uint32_t op_done;
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void *arg;
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};
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struct jobring {
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int jq_id;
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int irq;
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int liodn;
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/* Head is the index where software would enq the descriptor in
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* the i/p ring
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*/
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int head;
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/* Tail index would be used by s/w ehile enqueuing to determine if
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* there is any space left in the s/w maintained i/p rings
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*/
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/* Also in case of deq tail will be incremented only in case of
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* in-order job completion
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*/
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int tail;
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/* Read index of the output ring. It may not match with tail in case
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* of out of order completetion
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*/
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int read_idx;
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/* Write index to input ring. Would be always equal to head */
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int write_idx;
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/* Size of the rings. */
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int size;
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/* Op ring size aligned to cache line size */
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int op_size;
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/* The ip and output rings have to be accessed by SEC. So the
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* pointers will ahve to point to the housekeeping region provided
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* by SEC
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*/
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/*Circular Ring of i/p descriptors */
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caam_dma_addr_t *input_ring;
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/* Circular Ring of o/p descriptors */
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/* Circula Ring containing info regarding descriptors in i/p
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* and o/p ring
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*/
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/* This ring can be on the stack */
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struct jr_info info[JR_SIZE];
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struct op_ring *output_ring;
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/* Offset in CCSR to the SEC engine to which this JR belongs */
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uint32_t sec_offset;
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};
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struct result {
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int done;
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uint32_t status;
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};
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/*
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* struct caam_regs - CAAM initialization register interface
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*
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* Interface to caam memory map, jobring register, jobring storage.
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*/
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struct caam_regs {
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ccsr_sec_t *sec; /*caam initialization registers*/
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struct jr_regs *regs; /*jobring configuration registers*/
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u8 jrid; /*id to identify a jobring*/
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/*Private sub-storage for a single JobR*/
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struct jobring jr[CONFIG_SYS_FSL_MAX_NUM_OF_SEC];
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};
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void caam_jr_strstatus(u32 status);
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int run_descriptor_jr(uint32_t *desc);
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#endif
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