/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (C) 2008-2009 Semihalf, Piotr Ziecik
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _SEC_H
#define _SEC_H
/*
* Each SEC channel can hold up to 24 descriptors. All 4 channels can be
* simultaneously active holding 96 descriptors. Each descriptor can use 0 or
* more link table entries depending of size and granulation of input/output
* data. One link table entry is needed for each 65535 bytes of data.
*/
/* Driver settings */
#define SEC_TIMEOUT 100000
#define SEC_MAX_SESSIONS 256
#define SEC_DESCRIPTORS 256 /* Must be power of 2 */
#define SEC_LT_ENTRIES 1024 /* Must be power of 2 */
#define SEC_MAX_IV_LEN 16
#define SEC_MAX_KEY_LEN 64
/* SEC information */
#define SEC_20_ID 0x0000000000000040ULL
#define SEC_30_ID 0x0030030000000000ULL
#define SEC_31_ID 0x0030030100000000ULL
#define SEC_CHANNELS 4
#define SEC_POINTERS 7
#define SEC_MAX_DMA_BLOCK_SIZE 0xFFFF
#define SEC_MAX_FIFO_LEVEL 24
#define SEC_DMA_ALIGNMENT 8
#define __packed__ __attribute__ ((__packed__))
struct sec_softc;
struct sec_session;
/* SEC descriptor definition */
struct sec_hw_desc_ptr {
u_int shdp_length : 16;
u_int shdp_j : 1;
u_int shdp_extent : 7;
u_int __padding0 : 4;
uint64_t shdp_ptr : 36;
} __packed__;
struct sec_hw_desc {
union __packed__ {
struct __packed__ {
u_int eu_sel0 : 4;
u_int mode0 : 8;
u_int eu_sel1 : 4;
u_int mode1 : 8;
u_int desc_type : 5;
u_int __padding0 : 1;
u_int dir : 1;
u_int dn : 1;
u_int __padding1 : 32;
} request;
struct __packed__ {
u_int done : 8;
u_int __padding0 : 27;
u_int iccr0 : 2;
u_int __padding1 : 6;
u_int iccr1 : 2;
u_int __padding2 : 19;
} feedback;
} shd_control;
struct sec_hw_desc_ptr shd_pointer[SEC_POINTERS];
/* Data below is mapped to descriptor pointers */
uint8_t shd_iv[SEC_MAX_IV_LEN];
uint8_t shd_key[SEC_MAX_KEY_LEN];
uint8_t shd_mkey[SEC_MAX_KEY_LEN];
uint8_t shd_digest[HASH_MAX_LEN];
} __packed__;
#define shd_eu_sel0 shd_control.request.eu_sel0
#define shd_mode0 shd_control.request.mode0
#define shd_eu_sel1 shd_control.request.eu_sel1
#define shd_mode1 shd_control.request.mode1
#define shd_desc_type shd_control.request.desc_type
#define shd_dir shd_control.request.dir
#define shd_dn shd_control.request.dn
#define shd_done shd_control.feedback.done
#define shd_iccr0 shd_control.feedback.iccr0
#define shd_iccr1 shd_control.feedback.iccr1
/* SEC link table entries definition */
struct sec_hw_lt {
u_int shl_length : 16;
u_int __padding0 : 6;
u_int shl_r : 1;
u_int shl_n : 1;
u_int __padding1 : 4;
uint64_t shl_ptr : 36;
} __packed__;
struct sec_dma_mem {
void *dma_vaddr;
bus_addr_t dma_paddr;
bus_dma_tag_t dma_tag;
bus_dmamap_t dma_map;
u_int dma_is_map;
};
struct sec_desc {
struct sec_hw_desc *sd_desc;
bus_addr_t sd_desc_paddr;
struct sec_dma_mem sd_ptr_dmem[SEC_POINTERS];
struct cryptop *sd_crp;
u_int sd_lt_used;
u_int sd_error;
};
struct sec_lt {
struct sec_hw_lt *sl_lt;
bus_addr_t sl_lt_paddr;
};
struct sec_eu_methods {
bool (*sem_newsession)(const struct crypto_session_params *csp);
int (*sem_make_desc)(struct sec_softc *sc,
const struct crypto_session_params *csp, struct sec_desc *desc,
struct cryptop *crp);
};
struct sec_session {
struct sec_eu_methods *ss_eu;
uint8_t ss_key[SEC_MAX_KEY_LEN];
uint8_t ss_mkey[SEC_MAX_KEY_LEN];
int ss_mlen;
};
struct sec_desc_map_info {
struct sec_softc *sdmi_sc;
bus_size_t sdmi_size;
bus_size_t sdmi_offset;
struct sec_lt *sdmi_lt_first;
struct sec_lt *sdmi_lt_last;
u_int sdmi_lt_used;
};
struct sec_softc {
device_t sc_dev;
int32_t sc_cid;
int sc_blocked;
int sc_shutdown;
u_int sc_version;
uint64_t sc_int_error_mask;
uint64_t sc_channel_idle_mask;
struct mtx sc_controller_lock;
struct mtx sc_descriptors_lock;
struct sec_desc sc_desc[SEC_DESCRIPTORS];
u_int sc_free_desc_get_cnt;
u_int sc_free_desc_put_cnt;
u_int sc_ready_desc_get_cnt;
u_int sc_ready_desc_put_cnt;
u_int sc_queued_desc_get_cnt;
u_int sc_queued_desc_put_cnt;
struct sec_lt sc_lt[SEC_LT_ENTRIES + 1];
u_int sc_lt_alloc_cnt;
u_int sc_lt_free_cnt;
struct sec_dma_mem sc_desc_dmem; /* descriptors DMA memory */
struct sec_dma_mem sc_lt_dmem; /* link tables DMA memory */
struct resource *sc_rres; /* register resource */
int sc_rrid; /* register rid */
struct {
bus_space_tag_t bst;
bus_space_handle_t bsh;
} sc_bas;
struct resource *sc_pri_ires; /* primary irq resource */
void *sc_pri_ihand; /* primary irq handler */
int sc_pri_irid; /* primary irq resource id */
struct resource *sc_sec_ires; /* secondary irq resource */
void *sc_sec_ihand; /* secondary irq handler */
int sc_sec_irid; /* secondary irq resource id */
};
/* Locking macros */
#define SEC_LOCK(sc, what) \
mtx_lock(&(sc)->sc_ ## what ## _lock)
#define SEC_UNLOCK(sc, what) \
mtx_unlock(&(sc)->sc_ ## what ## _lock)
#define SEC_LOCK_ASSERT(sc, what) \
mtx_assert(&(sc)->sc_ ## what ## _lock, MA_OWNED)
/* Read/Write definitions */
#define SEC_READ(sc, reg) \
bus_space_read_8((sc)->sc_bas.bst, (sc)->sc_bas.bsh, (reg))
#define SEC_WRITE(sc, reg, val) \
bus_space_write_8((sc)->sc_bas.bst, (sc)->sc_bas.bsh, (reg), (val))
/* Base allocation macros (warning: wrap must be 2^n) */
#define SEC_CNT_INIT(sc, cnt, wrap) \
(((sc)->cnt) = ((wrap) - 1))
#define SEC_ADD(sc, cnt, wrap, val) \
((sc)->cnt = (((sc)->cnt) + (val)) & ((wrap) - 1))
#define SEC_INC(sc, cnt, wrap) \
SEC_ADD(sc, cnt, wrap, 1)
#define SEC_DEC(sc, cnt, wrap) \
SEC_ADD(sc, cnt, wrap, -1)
#define SEC_GET_GENERIC(sc, tab, cnt, wrap) \
((sc)->tab[SEC_INC(sc, cnt, wrap)])
#define SEC_PUT_GENERIC(sc, tab, cnt, wrap, val) \
((sc)->tab[SEC_INC(sc, cnt, wrap)] = val)
/* Interface for descriptors */
#define SEC_GET_FREE_DESC(sc) \
&SEC_GET_GENERIC(sc, sc_desc, sc_free_desc_get_cnt, SEC_DESCRIPTORS)
#define SEC_PUT_BACK_FREE_DESC(sc) \
SEC_DEC(sc, sc_free_desc_get_cnt, SEC_DESCRIPTORS)
#define SEC_DESC_FREE2READY(sc) \
SEC_INC(sc, sc_ready_desc_put_cnt, SEC_DESCRIPTORS)
#define SEC_GET_READY_DESC(sc) \
&SEC_GET_GENERIC(sc, sc_desc, sc_ready_desc_get_cnt, SEC_DESCRIPTORS)
#define SEC_PUT_BACK_READY_DESC(sc) \
SEC_DEC(sc, sc_ready_desc_get_cnt, SEC_DESCRIPTORS)
#define SEC_DESC_READY2QUEUED(sc) \
SEC_INC(sc, sc_queued_desc_put_cnt, SEC_DESCRIPTORS)
#define SEC_GET_QUEUED_DESC(sc) \
&SEC_GET_GENERIC(sc, sc_desc, sc_queued_desc_get_cnt, SEC_DESCRIPTORS)
#define SEC_PUT_BACK_QUEUED_DESC(sc) \
SEC_DEC(sc, sc_queued_desc_get_cnt, SEC_DESCRIPTORS)
#define SEC_DESC_QUEUED2FREE(sc) \
SEC_INC(sc, sc_free_desc_put_cnt, SEC_DESCRIPTORS)
#define SEC_FREE_DESC_CNT(sc) \
(((sc)->sc_free_desc_put_cnt - (sc)->sc_free_desc_get_cnt - 1) \
& (SEC_DESCRIPTORS - 1))
#define SEC_READY_DESC_CNT(sc) \
(((sc)->sc_ready_desc_put_cnt - (sc)->sc_ready_desc_get_cnt) & \
(SEC_DESCRIPTORS - 1))
#define SEC_QUEUED_DESC_CNT(sc) \
(((sc)->sc_queued_desc_put_cnt - (sc)->sc_queued_desc_get_cnt) \
& (SEC_DESCRIPTORS - 1))
#define SEC_DESC_SYNC(sc, mode) do { \
sec_sync_dma_mem(&((sc)->sc_desc_dmem), (mode)); \
sec_sync_dma_mem(&((sc)->sc_lt_dmem), (mode)); \
} while (0)
#define SEC_DESC_SYNC_POINTERS(desc, mode) do { \
u_int i; \
for (i = 0; i < SEC_POINTERS; i++) \
sec_sync_dma_mem(&((desc)->sd_ptr_dmem[i]), (mode)); \
} while (0)
#define SEC_DESC_FREE_POINTERS(desc) do { \
u_int i; \
for (i = 0; i < SEC_POINTERS; i++) \
sec_free_dma_mem(&(desc)->sd_ptr_dmem[i]); \
} while (0);
#define SEC_DESC_PUT_BACK_LT(sc, desc) \
SEC_PUT_BACK_LT(sc, (desc)->sd_lt_used)
#define SEC_DESC_FREE_LT(sc, desc) \
SEC_FREE_LT(sc, (desc)->sd_lt_used)
/* Interface for link tables */
#define SEC_ALLOC_LT_ENTRY(sc) \
&SEC_GET_GENERIC(sc, sc_lt, sc_lt_alloc_cnt, SEC_LT_ENTRIES)
#define SEC_PUT_BACK_LT(sc, num) \
SEC_ADD(sc, sc_lt_alloc_cnt, SEC_LT_ENTRIES, -(num))
#define SEC_FREE_LT(sc, num) \
SEC_ADD(sc, sc_lt_free_cnt, SEC_LT_ENTRIES, num)
#define SEC_FREE_LT_CNT(sc) \
(((sc)->sc_lt_free_cnt - (sc)->sc_lt_alloc_cnt - 1) \
& (SEC_LT_ENTRIES - 1))
/* Size of SEC registers area */
#define SEC_IO_SIZE 0x10000
/* SEC Controller registers */
#define SEC_IER 0x1008
#define SEC_INT_CH_DN(n) (1ULL << (((n) * 2) + 32))
#define SEC_INT_CH_ERR(n) (1ULL << (((n) * 2) + 33))
#define SEC_INT_ITO (1ULL << 55)
#define SEC_ISR 0x1010
#define SEC_ICR 0x1018
#define SEC_ID 0x1020
#define SEC_EUASR 0x1028
#define SEC_EUASR_RNGU(r) (((r) >> 0) & 0xF)
#define SEC_EUASR_PKEU(r) (((r) >> 8) & 0xF)
#define SEC_EUASR_KEU(r) (((r) >> 16) & 0xF)
#define SEC_EUASR_CRCU(r) (((r) >> 20) & 0xF)
#define SEC_EUASR_DEU(r) (((r) >> 32) & 0xF)
#define SEC_EUASR_AESU(r) (((r) >> 40) & 0xF)
#define SEC_EUASR_MDEU(r) (((r) >> 48) & 0xF)
#define SEC_EUASR_AFEU(r) (((r) >> 56) & 0xF)
#define SEC_MCR 0x1030
#define SEC_MCR_SWR (1ULL << 32)
/* SEC Channel registers */
#define SEC_CHAN_CCR(n) (((n) * 0x100) + 0x1108)
#define SEC_CHAN_CCR_CDIE (1ULL << 1)
#define SEC_CHAN_CCR_NT (1ULL << 2)
#define SEC_CHAN_CCR_AWSE (1ULL << 3)
#define SEC_CHAN_CCR_CDWE (1ULL << 4)
#define SEC_CHAN_CCR_BS (1ULL << 8)
#define SEC_CHAN_CCR_WGN (1ULL << 13)
#define SEC_CHAN_CCR_R (1ULL << 32)
#define SEC_CHAN_CCR_CON (1ULL << 33)
#define SEC_CHAN_CSR(n) (((n) * 0x100) + 0x1110)
#define SEC_CHAN_CSR2_FFLVL_M 0x1FULL
#define SEC_CHAN_CSR2_FFLVL_S 56
#define SEC_CHAN_CSR2_GSTATE_M 0x0FULL
#define SEC_CHAN_CSR2_GSTATE_S 48
#define SEC_CHAN_CSR2_PSTATE_M 0x0FULL
#define SEC_CHAN_CSR2_PSTATE_S 40
#define SEC_CHAN_CSR2_MSTATE_M 0x3FULL
#define SEC_CHAN_CSR2_MSTATE_S 32
#define SEC_CHAN_CSR3_FFLVL_M 0x1FULL
#define SEC_CHAN_CSR3_FFLVL_S 24
#define SEC_CHAN_CSR3_MSTATE_M 0x1FFULL
#define SEC_CHAN_CSR3_MSTATE_S 32
#define SEC_CHAN_CSR3_PSTATE_M 0x7FULL
#define SEC_CHAN_CSR3_PSTATE_S 48
#define SEC_CHAN_CSR3_GSTATE_M 0x7FULL
#define SEC_CHAN_CSR3_GSTATE_S 56
#define SEC_CHAN_CDPR(n) (((n) * 0x100) + 0x1140)
#define SEC_CHAN_FF(n) (((n) * 0x100) + 0x1148)
/* SEC Execution Units numbers */
#define SEC_EU_NONE 0x0
#define SEC_EU_AFEU 0x1
#define SEC_EU_DEU 0x2
#define SEC_EU_MDEU_A 0x3
#define SEC_EU_MDEU_B 0xB
#define SEC_EU_RNGU 0x4
#define SEC_EU_PKEU 0x5
#define SEC_EU_AESU 0x6
#define SEC_EU_KEU 0x7
#define SEC_EU_CRCU 0x8
/* SEC descriptor types */
#define SEC_DT_COMMON_NONSNOOP 0x02
#define SEC_DT_HMAC_SNOOP 0x04
/* SEC AESU declarations and definitions */
#define SEC_AESU_MODE_ED (1ULL << 0)
#define SEC_AESU_MODE_CBC (1ULL << 1)
/* SEC DEU declarations and definitions */
#define SEC_DEU_MODE_ED (1ULL << 0)
#define SEC_DEU_MODE_TS (1ULL << 1)
#define SEC_DEU_MODE_CBC (1ULL << 2)
/* SEC MDEU declarations and definitions */
#define SEC_HMAC_HASH_LEN 12
#define SEC_MDEU_MODE_SHA1 0x00 /* MDEU A */
#define SEC_MDEU_MODE_SHA384 0x00 /* MDEU B */
#define SEC_MDEU_MODE_SHA256 0x01
#define SEC_MDEU_MODE_MD5 0x02 /* MDEU A */
#define SEC_MDEU_MODE_SHA512 0x02 /* MDEU B */
#define SEC_MDEU_MODE_SHA224 0x03
#define SEC_MDEU_MODE_PD (1ULL << 2)
#define SEC_MDEU_MODE_HMAC (1ULL << 3)
#define SEC_MDEU_MODE_INIT (1ULL << 4)
#define SEC_MDEU_MODE_SMAC (1ULL << 5)
#define SEC_MDEU_MODE_CICV (1ULL << 6)
#define SEC_MDEU_MODE_CONT (1ULL << 7)
#endif
