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414 lines
15 KiB
414 lines
15 KiB
/* SPDX-License-Identifier: BSD-3-Clause */ |
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/* |
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* Freescale SEC (talitos) device register and descriptor header defines |
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* |
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* Copyright (c) 2006-2011 Freescale Semiconductor, Inc. |
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*/ |
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#define TALITOS_TIMEOUT 100000 |
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#define TALITOS1_MAX_DATA_LEN 32768 |
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#define TALITOS2_MAX_DATA_LEN 65535 |
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#define DESC_TYPE(desc_hdr) ((be32_to_cpu(desc_hdr) >> 3) & 0x1f) |
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#define PRIMARY_EU(desc_hdr) ((be32_to_cpu(desc_hdr) >> 28) & 0xf) |
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#define SECONDARY_EU(desc_hdr) ((be32_to_cpu(desc_hdr) >> 16) & 0xf) |
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/* descriptor pointer entry */ |
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struct talitos_ptr { |
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union { |
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struct { /* SEC2 format */ |
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__be16 len; /* length */ |
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u8 j_extent; /* jump to sg link table and/or extent*/ |
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u8 eptr; /* extended address */ |
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}; |
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struct { /* SEC1 format */ |
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__be16 res; |
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__be16 len1; /* length */ |
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}; |
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}; |
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__be32 ptr; /* address */ |
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}; |
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/* descriptor */ |
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struct talitos_desc { |
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__be32 hdr; /* header high bits */ |
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union { |
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__be32 hdr_lo; /* header low bits */ |
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__be32 hdr1; /* header for SEC1 */ |
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}; |
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struct talitos_ptr ptr[7]; /* ptr/len pair array */ |
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__be32 next_desc; /* next descriptor (SEC1) */ |
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}; |
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#define TALITOS_DESC_SIZE (sizeof(struct talitos_desc) - sizeof(__be32)) |
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/* |
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* talitos_edesc - s/w-extended descriptor |
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* @src_nents: number of segments in input scatterlist |
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* @dst_nents: number of segments in output scatterlist |
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* @iv_dma: dma address of iv for checking continuity and link table |
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* @dma_len: length of dma mapped link_tbl space |
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* @dma_link_tbl: bus physical address of link_tbl/buf |
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* @desc: h/w descriptor |
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* @link_tbl: input and output h/w link tables (if {src,dst}_nents > 1) (SEC2) |
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* @buf: input and output buffeur (if {src,dst}_nents > 1) (SEC1) |
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* |
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* if decrypting (with authcheck), or either one of src_nents or dst_nents |
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* is greater than 1, an integrity check value is concatenated to the end |
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* of link_tbl data |
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*/ |
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struct talitos_edesc { |
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int src_nents; |
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int dst_nents; |
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dma_addr_t iv_dma; |
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int dma_len; |
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dma_addr_t dma_link_tbl; |
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struct talitos_desc desc; |
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union { |
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struct talitos_ptr link_tbl[0]; |
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u8 buf[0]; |
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}; |
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}; |
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/** |
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* talitos_request - descriptor submission request |
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* @desc: descriptor pointer (kernel virtual) |
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* @dma_desc: descriptor's physical bus address |
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* @callback: whom to call when descriptor processing is done |
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* @context: caller context (optional) |
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*/ |
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struct talitos_request { |
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struct talitos_desc *desc; |
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dma_addr_t dma_desc; |
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void (*callback) (struct device *dev, struct talitos_desc *desc, |
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void *context, int error); |
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void *context; |
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}; |
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/* per-channel fifo management */ |
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struct talitos_channel { |
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void __iomem *reg; |
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/* request fifo */ |
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struct talitos_request *fifo; |
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/* number of requests pending in channel h/w fifo */ |
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atomic_t submit_count ____cacheline_aligned; |
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/* request submission (head) lock */ |
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spinlock_t head_lock ____cacheline_aligned; |
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/* index to next free descriptor request */ |
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int head; |
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/* request release (tail) lock */ |
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spinlock_t tail_lock ____cacheline_aligned; |
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/* index to next in-progress/done descriptor request */ |
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int tail; |
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}; |
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struct talitos_private { |
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struct device *dev; |
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struct platform_device *ofdev; |
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void __iomem *reg; |
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void __iomem *reg_deu; |
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void __iomem *reg_aesu; |
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void __iomem *reg_mdeu; |
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void __iomem *reg_afeu; |
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void __iomem *reg_rngu; |
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void __iomem *reg_pkeu; |
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void __iomem *reg_keu; |
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void __iomem *reg_crcu; |
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int irq[2]; |
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/* SEC global registers lock */ |
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spinlock_t reg_lock ____cacheline_aligned; |
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/* SEC version geometry (from device tree node) */ |
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unsigned int num_channels; |
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unsigned int chfifo_len; |
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unsigned int exec_units; |
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unsigned int desc_types; |
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/* SEC Compatibility info */ |
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unsigned long features; |
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/* |
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* length of the request fifo |
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* fifo_len is chfifo_len rounded up to next power of 2 |
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* so we can use bitwise ops to wrap |
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*/ |
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unsigned int fifo_len; |
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struct talitos_channel *chan; |
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/* next channel to be assigned next incoming descriptor */ |
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atomic_t last_chan ____cacheline_aligned; |
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/* request callback tasklet */ |
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struct tasklet_struct done_task[2]; |
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/* list of registered algorithms */ |
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struct list_head alg_list; |
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/* hwrng device */ |
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struct hwrng rng; |
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bool rng_registered; |
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}; |
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/* .features flag */ |
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#define TALITOS_FTR_SRC_LINK_TBL_LEN_INCLUDES_EXTENT 0x00000001 |
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#define TALITOS_FTR_HW_AUTH_CHECK 0x00000002 |
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#define TALITOS_FTR_SHA224_HWINIT 0x00000004 |
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#define TALITOS_FTR_HMAC_OK 0x00000008 |
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#define TALITOS_FTR_SEC1 0x00000010 |
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/* |
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* If both CONFIG_CRYPTO_DEV_TALITOS1 and CONFIG_CRYPTO_DEV_TALITOS2 are |
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* defined, we check the features which are set according to the device tree. |
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* Otherwise, we answer true or false directly |
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*/ |
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static inline bool has_ftr_sec1(struct talitos_private *priv) |
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{ |
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if (IS_ENABLED(CONFIG_CRYPTO_DEV_TALITOS1) && |
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IS_ENABLED(CONFIG_CRYPTO_DEV_TALITOS2)) |
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return priv->features & TALITOS_FTR_SEC1; |
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return IS_ENABLED(CONFIG_CRYPTO_DEV_TALITOS1); |
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} |
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/* |
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* TALITOS_xxx_LO addresses point to the low data bits (32-63) of the register |
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*/ |
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#define ISR1_FORMAT(x) (((x) << 28) | ((x) << 16)) |
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#define ISR2_FORMAT(x) (((x) << 4) | (x)) |
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/* global register offset addresses */ |
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#define TALITOS_MCR 0x1030 /* master control register */ |
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#define TALITOS_MCR_RCA0 (1 << 15) /* remap channel 0 */ |
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#define TALITOS_MCR_RCA1 (1 << 14) /* remap channel 1 */ |
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#define TALITOS_MCR_RCA2 (1 << 13) /* remap channel 2 */ |
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#define TALITOS_MCR_RCA3 (1 << 12) /* remap channel 3 */ |
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#define TALITOS1_MCR_SWR 0x1000000 /* s/w reset */ |
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#define TALITOS2_MCR_SWR 0x1 /* s/w reset */ |
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#define TALITOS_MCR_LO 0x1034 |
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#define TALITOS_IMR 0x1008 /* interrupt mask register */ |
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/* enable channel IRQs */ |
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#define TALITOS1_IMR_INIT ISR1_FORMAT(0xf) |
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#define TALITOS1_IMR_DONE ISR1_FORMAT(0x5) /* done IRQs */ |
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/* enable channel IRQs */ |
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#define TALITOS2_IMR_INIT (ISR2_FORMAT(0xf) | 0x10000) |
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#define TALITOS2_IMR_DONE ISR1_FORMAT(0x5) /* done IRQs */ |
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#define TALITOS_IMR_LO 0x100C |
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#define TALITOS1_IMR_LO_INIT 0x2000000 /* allow RNGU error IRQs */ |
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#define TALITOS2_IMR_LO_INIT 0x20000 /* allow RNGU error IRQs */ |
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#define TALITOS_ISR 0x1010 /* interrupt status register */ |
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#define TALITOS1_ISR_4CHERR ISR1_FORMAT(0xa) /* 4 ch errors mask */ |
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#define TALITOS1_ISR_4CHDONE ISR1_FORMAT(0x5) /* 4 ch done mask */ |
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#define TALITOS1_ISR_CH_0_ERR (2 << 28) /* ch 0 errors mask */ |
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#define TALITOS1_ISR_CH_0_DONE (1 << 28) /* ch 0 done mask */ |
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#define TALITOS1_ISR_TEA_ERR 0x00000040 |
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#define TALITOS2_ISR_4CHERR ISR2_FORMAT(0xa) /* 4 ch errors mask */ |
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#define TALITOS2_ISR_4CHDONE ISR2_FORMAT(0x5) /* 4 ch done mask */ |
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#define TALITOS2_ISR_CH_0_ERR 2 /* ch 0 errors mask */ |
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#define TALITOS2_ISR_CH_0_DONE 1 /* ch 0 done mask */ |
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#define TALITOS2_ISR_CH_0_2_ERR ISR2_FORMAT(0x2) /* ch 0, 2 err mask */ |
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#define TALITOS2_ISR_CH_0_2_DONE ISR2_FORMAT(0x1) /* ch 0, 2 done mask */ |
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#define TALITOS2_ISR_CH_1_3_ERR ISR2_FORMAT(0x8) /* ch 1, 3 err mask */ |
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#define TALITOS2_ISR_CH_1_3_DONE ISR2_FORMAT(0x4) /* ch 1, 3 done mask */ |
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#define TALITOS_ISR_LO 0x1014 |
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#define TALITOS_ICR 0x1018 /* interrupt clear register */ |
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#define TALITOS_ICR_LO 0x101C |
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/* channel register address stride */ |
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#define TALITOS_CH_BASE_OFFSET 0x1000 /* default channel map base */ |
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#define TALITOS1_CH_STRIDE 0x1000 |
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#define TALITOS2_CH_STRIDE 0x100 |
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/* channel configuration register */ |
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#define TALITOS_CCCR 0x8 |
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#define TALITOS2_CCCR_CONT 0x2 /* channel continue on SEC2 */ |
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#define TALITOS2_CCCR_RESET 0x1 /* channel reset on SEC2 */ |
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#define TALITOS_CCCR_LO 0xc |
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#define TALITOS_CCCR_LO_IWSE 0x80 /* chan. ICCR writeback enab. */ |
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#define TALITOS_CCCR_LO_EAE 0x20 /* extended address enable */ |
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#define TALITOS_CCCR_LO_CDWE 0x10 /* chan. done writeback enab. */ |
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#define TALITOS_CCCR_LO_NE 0x8 /* fetch next descriptor enab. */ |
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#define TALITOS_CCCR_LO_NT 0x4 /* notification type */ |
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#define TALITOS_CCCR_LO_CDIE 0x2 /* channel done IRQ enable */ |
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#define TALITOS1_CCCR_LO_RESET 0x1 /* channel reset on SEC1 */ |
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/* CCPSR: channel pointer status register */ |
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#define TALITOS_CCPSR 0x10 |
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#define TALITOS_CCPSR_LO 0x14 |
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#define TALITOS_CCPSR_LO_DOF 0x8000 /* double FF write oflow error */ |
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#define TALITOS_CCPSR_LO_SOF 0x4000 /* single FF write oflow error */ |
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#define TALITOS_CCPSR_LO_MDTE 0x2000 /* master data transfer error */ |
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#define TALITOS_CCPSR_LO_SGDLZ 0x1000 /* s/g data len zero error */ |
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#define TALITOS_CCPSR_LO_FPZ 0x0800 /* fetch ptr zero error */ |
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#define TALITOS_CCPSR_LO_IDH 0x0400 /* illegal desc hdr error */ |
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#define TALITOS_CCPSR_LO_IEU 0x0200 /* invalid EU error */ |
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#define TALITOS_CCPSR_LO_EU 0x0100 /* EU error detected */ |
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#define TALITOS_CCPSR_LO_GB 0x0080 /* gather boundary error */ |
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#define TALITOS_CCPSR_LO_GRL 0x0040 /* gather return/length error */ |
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#define TALITOS_CCPSR_LO_SB 0x0020 /* scatter boundary error */ |
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#define TALITOS_CCPSR_LO_SRL 0x0010 /* scatter return/length error */ |
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/* channel fetch fifo register */ |
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#define TALITOS_FF 0x48 |
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#define TALITOS_FF_LO 0x4c |
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/* current descriptor pointer register */ |
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#define TALITOS_CDPR 0x40 |
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#define TALITOS_CDPR_LO 0x44 |
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/* descriptor buffer register */ |
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#define TALITOS_DESCBUF 0x80 |
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#define TALITOS_DESCBUF_LO 0x84 |
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/* gather link table */ |
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#define TALITOS_GATHER 0xc0 |
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#define TALITOS_GATHER_LO 0xc4 |
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/* scatter link table */ |
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#define TALITOS_SCATTER 0xe0 |
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#define TALITOS_SCATTER_LO 0xe4 |
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/* execution unit registers base */ |
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#define TALITOS2_DEU 0x2000 |
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#define TALITOS2_AESU 0x4000 |
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#define TALITOS2_MDEU 0x6000 |
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#define TALITOS2_AFEU 0x8000 |
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#define TALITOS2_RNGU 0xa000 |
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#define TALITOS2_PKEU 0xc000 |
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#define TALITOS2_KEU 0xe000 |
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#define TALITOS2_CRCU 0xf000 |
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#define TALITOS12_AESU 0x4000 |
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#define TALITOS12_DEU 0x5000 |
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#define TALITOS12_MDEU 0x6000 |
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#define TALITOS10_AFEU 0x8000 |
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#define TALITOS10_DEU 0xa000 |
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#define TALITOS10_MDEU 0xc000 |
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#define TALITOS10_RNGU 0xe000 |
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#define TALITOS10_PKEU 0x10000 |
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#define TALITOS10_AESU 0x12000 |
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/* execution unit interrupt status registers */ |
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#define TALITOS_EUDSR 0x10 /* data size */ |
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#define TALITOS_EUDSR_LO 0x14 |
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#define TALITOS_EURCR 0x18 /* reset control*/ |
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#define TALITOS_EURCR_LO 0x1c |
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#define TALITOS_EUSR 0x28 /* rng status */ |
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#define TALITOS_EUSR_LO 0x2c |
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#define TALITOS_EUISR 0x30 |
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#define TALITOS_EUISR_LO 0x34 |
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#define TALITOS_EUICR 0x38 /* int. control */ |
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#define TALITOS_EUICR_LO 0x3c |
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#define TALITOS_EU_FIFO 0x800 /* output FIFO */ |
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#define TALITOS_EU_FIFO_LO 0x804 /* output FIFO */ |
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/* DES unit */ |
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#define TALITOS1_DEUICR_KPE 0x00200000 /* Key Parity Error */ |
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/* message digest unit */ |
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#define TALITOS_MDEUICR_LO_ICE 0x4000 /* integrity check IRQ enable */ |
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/* random number unit */ |
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#define TALITOS_RNGUSR_LO_RD 0x1 /* reset done */ |
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#define TALITOS_RNGUSR_LO_OFL 0xff0000/* output FIFO length */ |
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#define TALITOS_RNGURCR_LO_SR 0x1 /* software reset */ |
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#define TALITOS_MDEU_CONTEXT_SIZE_MD5_SHA1_SHA256 0x28 |
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#define TALITOS_MDEU_CONTEXT_SIZE_SHA384_SHA512 0x48 |
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/* |
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* talitos descriptor header (hdr) bits |
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*/ |
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/* written back when done */ |
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#define DESC_HDR_DONE cpu_to_be32(0xff000000) |
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#define DESC_HDR_LO_ICCR1_MASK cpu_to_be32(0x00180000) |
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#define DESC_HDR_LO_ICCR1_PASS cpu_to_be32(0x00080000) |
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#define DESC_HDR_LO_ICCR1_FAIL cpu_to_be32(0x00100000) |
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/* primary execution unit select */ |
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#define DESC_HDR_SEL0_MASK cpu_to_be32(0xf0000000) |
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#define DESC_HDR_SEL0_AFEU cpu_to_be32(0x10000000) |
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#define DESC_HDR_SEL0_DEU cpu_to_be32(0x20000000) |
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#define DESC_HDR_SEL0_MDEUA cpu_to_be32(0x30000000) |
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#define DESC_HDR_SEL0_MDEUB cpu_to_be32(0xb0000000) |
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#define DESC_HDR_SEL0_RNG cpu_to_be32(0x40000000) |
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#define DESC_HDR_SEL0_PKEU cpu_to_be32(0x50000000) |
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#define DESC_HDR_SEL0_AESU cpu_to_be32(0x60000000) |
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#define DESC_HDR_SEL0_KEU cpu_to_be32(0x70000000) |
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#define DESC_HDR_SEL0_CRCU cpu_to_be32(0x80000000) |
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/* primary execution unit mode (MODE0) and derivatives */ |
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#define DESC_HDR_MODE0_ENCRYPT cpu_to_be32(0x00100000) |
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#define DESC_HDR_MODE0_AESU_MASK cpu_to_be32(0x00600000) |
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#define DESC_HDR_MODE0_AESU_CBC cpu_to_be32(0x00200000) |
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#define DESC_HDR_MODE0_AESU_CTR cpu_to_be32(0x00600000) |
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#define DESC_HDR_MODE0_DEU_CBC cpu_to_be32(0x00400000) |
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#define DESC_HDR_MODE0_DEU_3DES cpu_to_be32(0x00200000) |
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#define DESC_HDR_MODE0_MDEU_CONT cpu_to_be32(0x08000000) |
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#define DESC_HDR_MODE0_MDEU_INIT cpu_to_be32(0x01000000) |
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#define DESC_HDR_MODE0_MDEU_HMAC cpu_to_be32(0x00800000) |
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#define DESC_HDR_MODE0_MDEU_PAD cpu_to_be32(0x00400000) |
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#define DESC_HDR_MODE0_MDEU_SHA224 cpu_to_be32(0x00300000) |
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#define DESC_HDR_MODE0_MDEU_MD5 cpu_to_be32(0x00200000) |
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#define DESC_HDR_MODE0_MDEU_SHA256 cpu_to_be32(0x00100000) |
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#define DESC_HDR_MODE0_MDEU_SHA1 cpu_to_be32(0x00000000) |
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#define DESC_HDR_MODE0_MDEUB_SHA384 cpu_to_be32(0x00000000) |
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#define DESC_HDR_MODE0_MDEUB_SHA512 cpu_to_be32(0x00200000) |
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#define DESC_HDR_MODE0_MDEU_MD5_HMAC (DESC_HDR_MODE0_MDEU_MD5 | \ |
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DESC_HDR_MODE0_MDEU_HMAC) |
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#define DESC_HDR_MODE0_MDEU_SHA256_HMAC (DESC_HDR_MODE0_MDEU_SHA256 | \ |
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DESC_HDR_MODE0_MDEU_HMAC) |
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#define DESC_HDR_MODE0_MDEU_SHA1_HMAC (DESC_HDR_MODE0_MDEU_SHA1 | \ |
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DESC_HDR_MODE0_MDEU_HMAC) |
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/* secondary execution unit select (SEL1) */ |
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#define DESC_HDR_SEL1_MASK cpu_to_be32(0x000f0000) |
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#define DESC_HDR_SEL1_MDEUA cpu_to_be32(0x00030000) |
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#define DESC_HDR_SEL1_MDEUB cpu_to_be32(0x000b0000) |
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#define DESC_HDR_SEL1_CRCU cpu_to_be32(0x00080000) |
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/* secondary execution unit mode (MODE1) and derivatives */ |
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#define DESC_HDR_MODE1_MDEU_CICV cpu_to_be32(0x00004000) |
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#define DESC_HDR_MODE1_MDEU_INIT cpu_to_be32(0x00001000) |
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#define DESC_HDR_MODE1_MDEU_HMAC cpu_to_be32(0x00000800) |
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#define DESC_HDR_MODE1_MDEU_PAD cpu_to_be32(0x00000400) |
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#define DESC_HDR_MODE1_MDEU_SHA224 cpu_to_be32(0x00000300) |
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#define DESC_HDR_MODE1_MDEU_MD5 cpu_to_be32(0x00000200) |
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#define DESC_HDR_MODE1_MDEU_SHA256 cpu_to_be32(0x00000100) |
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#define DESC_HDR_MODE1_MDEU_SHA1 cpu_to_be32(0x00000000) |
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#define DESC_HDR_MODE1_MDEUB_SHA384 cpu_to_be32(0x00000000) |
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#define DESC_HDR_MODE1_MDEUB_SHA512 cpu_to_be32(0x00000200) |
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#define DESC_HDR_MODE1_MDEU_MD5_HMAC (DESC_HDR_MODE1_MDEU_MD5 | \ |
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DESC_HDR_MODE1_MDEU_HMAC) |
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#define DESC_HDR_MODE1_MDEU_SHA256_HMAC (DESC_HDR_MODE1_MDEU_SHA256 | \ |
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DESC_HDR_MODE1_MDEU_HMAC) |
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#define DESC_HDR_MODE1_MDEU_SHA1_HMAC (DESC_HDR_MODE1_MDEU_SHA1 | \ |
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DESC_HDR_MODE1_MDEU_HMAC) |
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#define DESC_HDR_MODE1_MDEU_SHA224_HMAC (DESC_HDR_MODE1_MDEU_SHA224 | \ |
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DESC_HDR_MODE1_MDEU_HMAC) |
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#define DESC_HDR_MODE1_MDEUB_SHA384_HMAC (DESC_HDR_MODE1_MDEUB_SHA384 | \ |
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DESC_HDR_MODE1_MDEU_HMAC) |
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#define DESC_HDR_MODE1_MDEUB_SHA512_HMAC (DESC_HDR_MODE1_MDEUB_SHA512 | \ |
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DESC_HDR_MODE1_MDEU_HMAC) |
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/* direction of overall data flow (DIR) */ |
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#define DESC_HDR_DIR_INBOUND cpu_to_be32(0x00000002) |
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/* request done notification (DN) */ |
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#define DESC_HDR_DONE_NOTIFY cpu_to_be32(0x00000001) |
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/* descriptor types */ |
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#define DESC_HDR_TYPE_AESU_CTR_NONSNOOP cpu_to_be32(0 << 3) |
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#define DESC_HDR_TYPE_IPSEC_ESP cpu_to_be32(1 << 3) |
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#define DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU cpu_to_be32(2 << 3) |
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#define DESC_HDR_TYPE_HMAC_SNOOP_NO_AFEU cpu_to_be32(4 << 3) |
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/* link table extent field bits */ |
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#define DESC_PTR_LNKTBL_JUMP 0x80 |
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#define DESC_PTR_LNKTBL_RET 0x02 |
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#define DESC_PTR_LNKTBL_NEXT 0x01
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