1 /*- 2 * Copyright (c) 2016 Ruslan Bukin <[email protected]> 3 * All rights reserved. 4 * 5 * This software was developed by SRI International and the University of 6 * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237 7 * ("CTSRD"), as part of the DARPA CRASH research programme. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $FreeBSD$ 31 */ 32 33 /* DMA Channel Registers */ 34 #define PDMA_DSA(n) (0x00 + 0x20 * n) /* Channel n Source Address */ 35 #define PDMA_DTA(n) (0x04 + 0x20 * n) /* Channel n Target Address */ 36 #define PDMA_DTC(n) (0x08 + 0x20 * n) /* Channel n Transfer Count */ 37 #define PDMA_DRT(n) (0x0C + 0x20 * n) /* Channel n Request Source */ 38 #define DRT_AUTO (1 << 3) /* Auto-request. */ 39 #define PDMA_DCS(n) (0x10 + 0x20 * n) /* Channel n Control/Status */ 40 #define DCS_NDES (1 << 31) /* Non-descriptor mode. */ 41 #define DCS_DES8 (1 << 30) /* Descriptor 8 Word. */ 42 #define DCS_AR (1 << 4) /* Address Error. */ 43 #define DCS_TT (1 << 3) /* Transfer Terminate. */ 44 #define DCS_HLT (1 << 2) /* DMA halt. */ 45 #define DCS_CTE (1 << 0) /* Channel transfer enable. */ 46 #define PDMA_DCM(n) (0x14 + 0x20 * n) /* Channel n Command */ 47 #define DCM_SAI (1 << 23) /* Source Address Increment. */ 48 #define DCM_DAI (1 << 22) /* Destination Address Increment. */ 49 #define DCM_SP_S 14 /* Source port width. */ 50 #define DCM_SP_M (0x3 << DCM_SP_S) 51 #define DCM_SP_1 (0x1 << DCM_SP_S) /* 1 byte */ 52 #define DCM_SP_2 (0x2 << DCM_SP_S) /* 2 bytes */ 53 #define DCM_SP_4 (0x0 << DCM_SP_S) /* 4 bytes */ 54 #define DCM_DP_S 12 /* Destination port width. */ 55 #define DCM_DP_M (0x3 << DCM_DP_S) 56 #define DCM_DP_1 (0x1 << DCM_DP_S) /* 1 byte */ 57 #define DCM_DP_2 (0x2 << DCM_DP_S) /* 2 bytes */ 58 #define DCM_DP_4 (0x0 << DCM_DP_S) /* 4 bytes */ 59 #define DCM_TSZ_S 8 /* Transfer Data Size of a data unit. */ 60 #define DCM_TSZ_M (0x7 << DCM_TSZ_S) 61 #define DCM_TSZ_A (0x7 << DCM_TSZ_S) /* Autonomy */ 62 #define DCM_TSZ_1 (0x1 << DCM_TSZ_S) 63 #define DCM_TSZ_2 (0x2 << DCM_TSZ_S) 64 #define DCM_TSZ_4 (0x0 << DCM_TSZ_S) 65 #define DCM_TSZ_16 (0x3 << DCM_TSZ_S) 66 #define DCM_TSZ_32 (0x4 << DCM_TSZ_S) 67 #define DCM_TSZ_64 (0x5 << DCM_TSZ_S) 68 #define DCM_TSZ_128 (0x6 << DCM_TSZ_S) 69 #define DCM_TIE (1 << 1) /* Transfer Interrupt Enable (TIE). */ 70 #define DCM_LINK (1 << 0) /* Descriptor Link Enable. */ 71 #define PDMA_DDA(n) (0x18 + 0x20 * n) /* Channel n Descriptor Address */ 72 #define PDMA_DSD(n) (0x1C + 0x20 * n) /* Channel n Stride Difference */ 73 74 /* Global Control Registers */ 75 #define PDMA_DMAC 0x1000 /* DMA Control */ 76 #define DMAC_FMSC (1 << 31) 77 #define DMAC_INTCC_S 17 78 #define DMAC_INTCC_M (0x1f << DMAC_INTCC_S) 79 #define DMAC_INTCE (1 << 16) /* Permit INTC_IRQ to be bound to one of programmable channel. */ 80 #define DMAC_HLT (1 << 3) /* Global halt status */ 81 #define DMAC_AR (1 << 2) /* Global address error status */ 82 #define DMAC_DMAE (1 << 0) /* Enable DMA. */ 83 #define PDMA_DIRQP 0x1004 /* DMA Interrupt Pending */ 84 #define PDMA_DDB 0x1008 /* DMA Doorbell */ 85 #define PDMA_DDS 0x100C /* DMA Doorbell Set */ 86 #define PDMA_DIP 0x1010 /* Descriptor Interrupt Pending */ 87 #define PDMA_DIC 0x1014 /* Descriptor Interrupt Clear */ 88 #define PDMA_DMACP 0x101C /* DMA Channel Programmable */ 89 #define PDMA_DSIRQP 0x1020 /* Channel soft IRQ to MCU */ 90 #define PDMA_DSIRQM 0x1024 /* Channel soft IRQ mask */ 91 #define PDMA_DCIRQP 0x1028 /* Channel IRQ to MCU */ 92 #define PDMA_DCIRQM 0x102C /* Channel IRQ to MCU mask */ 93 #define PDMA_DMCS 0x1030 /* MCU Control and Status */ 94 #define PDMA_DMNMB 0x1034 /* MCU Normal Mailbox */ 95 #define PDMA_DMSMB 0x1038 /* MCU Security Mailbox */ 96 #define PDMA_DMINT 0x103C /* MCU Interrupt */ 97 98 struct pdma_hwdesc { 99 uint32_t dcm; /* DMA Channel Command */ 100 uint32_t dsa; /* DMA Source Address */ 101 uint32_t dta; /* DMA Target Address */ 102 uint32_t dtc; /* DMA Transfer Counter */ 103 uint32_t sd; /* Stride Address */ 104 uint32_t drt; /* DMA Request Type */ 105 uint32_t reserved[2]; 106 }; 107 108 #define CHAN_DESC_COUNT 4096 109 #define CHAN_DESC_SIZE (sizeof(struct pdma_hwdesc) * CHAN_DESC_COUNT) 110