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3ef2412de6
HW coherency won't work properly for CAAM write transactions
if AWCACHE is left to default (POR) value - 4'b0001.
It has to be programmed to 4'b0010.
For platforms that have HW coherency support:
-PPC-based: the update has no effect; CAAM coherency already works
due to the IOMMU (PAMU) driver setting the correct memory coherency
attributes
-ARM-based: the update fixes cache coherency issues,
since IOMMU (SMMU) driver is not programmed to behave similar to PAMU
Fixes: b9eebfade9 ("fsl_sec: Add hardware accelerated SHA256 and SHA1")
Signed-off-by: Horia Geantă <horia.geanta@freescale.com>
Reviewed-by: Aneesh Bansal <aneesh.bansal@freescale.com>
Reviewed-by: Mingkai Hu <Mingkai.Hu@freescale.com>
Acked-by: Ruchika Gupta<ruchika.gupta@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
/*
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* Copyright 2008-2014 Freescale Semiconductor, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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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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#define JR_SIZE 4
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/* Timeout currently defined as 90 sec */
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#define CONFIG_SEC_DEQ_TIMEOUT 90000000U
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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 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 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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struct op_ring {
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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)(dma_addr_t desc, uint32_t status, void *arg);
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dma_addr_t desc_phys_addr;
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uint32_t desc_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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/* 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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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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};
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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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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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