| 1 | /*
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| 2 | * Copyright (c) 2017 Ondrej Hlavaty <aearsis@eideo.cz>
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup drvusbxhci
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | * Context data structures of the xHC.
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| 34 | *
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| 35 | * Most of them are to be initialized to zero and passed ownership to the HC,
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| 36 | * so they are mostly read-only.
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| 37 | *
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| 38 | * Feel free to write a setter when in need.
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| 39 | */
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| 40 |
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| 41 | #ifndef XHCI_CONTEXT_H
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| 42 | #define XHCI_CONTEXT_H
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| 43 |
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| 44 | #include <stdint.h>
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| 45 | #include "common.h"
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| 46 |
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| 47 | /**
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| 48 | * Endpoint context: section 6.2.3
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| 49 | */
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| 50 | typedef struct xhci_endpoint_ctx {
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| 51 | xhci_dword_t data[2];
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| 52 | xhci_qword_t data2;
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| 53 | xhci_dword_t data3;
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| 54 | xhci_dword_t reserved[3];
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| 55 |
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| 56 | #define XHCI_EP_COUNT 31
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| 57 |
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| 58 | #define XHCI_EP_TYPE_ISOCH_OUT 1
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| 59 | #define XHCI_EP_TYPE_BULK_OUT 2
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| 60 | #define XHCI_EP_TYPE_INTERRUPT_OUT 3
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| 61 | #define XHCI_EP_TYPE_CONTROL 4
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| 62 | #define XHCI_EP_TYPE_ISOCH_IN 5
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| 63 | #define XHCI_EP_TYPE_BULK_IN 6
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| 64 | #define XHCI_EP_TYPE_INTERRUPT_IN 7
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| 65 |
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| 66 | #define XHCI_EP_TYPE_SET(ctx, val) \
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| 67 | xhci_dword_set_bits(&(ctx).data[1], val, 5, 3)
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| 68 | #define XHCI_EP_MAX_PACKET_SIZE_SET(ctx, val) \
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| 69 | xhci_dword_set_bits(&(ctx).data[1], val, 31, 16)
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| 70 | #define XHCI_EP_MAX_BURST_SIZE_SET(ctx, val) \
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| 71 | xhci_dword_set_bits(&(ctx).data[1], val, 15, 8)
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| 72 | #define XHCI_EP_TR_DPTR_SET(ctx, val) \
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| 73 | xhci_qword_set_bits(&(ctx).data2, (val >> 4), 63, 4)
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| 74 | #define XHCI_EP_DCS_SET(ctx, val) \
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| 75 | xhci_qword_set_bits(&(ctx).data2, val, 0, 0)
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| 76 | #define XHCI_EP_MAX_ESIT_PAYLOAD_LO_SET(ctx, val) \
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| 77 | xhci_dword_set_bits(&(ctx).data3, val, 31, 16)
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| 78 | #define XHCI_EP_INTERVAL_SET(ctx, val) \
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| 79 | xhci_dword_set_bits(&(ctx).data[0], val, 23, 16)
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| 80 | #define XHCI_EP_MAX_P_STREAMS_SET(ctx, val) \
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| 81 | xhci_dword_set_bits(&(ctx).data[0], val, 14, 10)
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| 82 | #define XHCI_EP_MULT_SET(ctx, val) \
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| 83 | xhci_dword_set_bits(&(ctx).data[0], val, 9, 8)
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| 84 | #define XHCI_EP_ERROR_COUNT_SET(ctx, val) \
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| 85 | xhci_dword_set_bits(&(ctx).data[1], val, 2, 1)
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| 86 |
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| 87 | #define XHCI_EP_STATE(ctx) XHCI_DWORD_EXTRACT((ctx).data[0], 2, 0)
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| 88 | #define XHCI_EP_MULT(ctx) XHCI_DWORD_EXTRACT((ctx).data[0], 9, 8)
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| 89 | #define XHCI_EP_MAX_P_STREAMS(ctx) XHCI_DWORD_EXTRACT((ctx).data[0], 14, 10)
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| 90 | #define XHCI_EP_LSA(ctx) XHCI_DWORD_EXTRACT((ctx).data[0], 15, 15)
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| 91 | #define XHCI_EP_INTERVAL(ctx) XHCI_DWORD_EXTRACT((ctx).data[0], 23, 16)
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| 92 |
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| 93 | #define XHCI_EP_ERROR_COUNT(ctx) XHCI_DWORD_EXTRACT((ctx).data[1], 2, 1)
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| 94 | #define XHCI_EP_TYPE(ctx) XHCI_DWORD_EXTRACT((ctx).data[1], 5, 3)
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| 95 | #define XHCI_EP_HID(ctx) XHCI_DWORD_EXTRACT((ctx).data[1], 7, 7)
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| 96 | #define XHCI_EP_MAX_BURST_SIZE(ctx) XHCI_DWORD_EXTRACT((ctx).data[1], 15, 8)
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| 97 | #define XHCI_EP_MAX_PACKET_SIZE(ctx) XHCI_DWORD_EXTRACT((ctx).data[1], 31, 16)
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| 98 |
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| 99 | #define XHCI_EP_DCS(ctx) XHCI_QWORD_EXTRACT((ctx).data2, 0, 0)
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| 100 | #define XHCI_EP_TR_DPTR(ctx) XHCI_QWORD_EXTRACT((ctx).data2, 63, 4)
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| 101 |
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| 102 | #define XHCI_EP_MAX_ESIT_PAYLOAD_LO(ctx) XHCI_DWORD_EXTRACT((ctx).data3, 31, 16)
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| 103 |
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| 104 | } __attribute__((packed)) xhci_ep_ctx_t;
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| 105 |
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| 106 | /**
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| 107 | * Slot context: section 6.2.2
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| 108 | */
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| 109 | typedef struct xhci_slot_ctx {
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| 110 | xhci_dword_t data [4];
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| 111 | xhci_dword_t reserved [4];
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| 112 |
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| 113 | #define XHCI_SLOT_ROOT_HUB_PORT_SET(ctx, val) \
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| 114 | xhci_dword_set_bits(&(ctx).data[1], val, 23, 16)
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| 115 | #define XHCI_SLOT_CTX_ENTRIES_SET(ctx, val) \
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| 116 | xhci_dword_set_bits(&(ctx).data[0], val, 31, 27)
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| 117 | #define XHCI_SLOT_ROUTE_STRING_SET(ctx, val) \
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| 118 | xhci_dword_set_bits(&(ctx).data[0], (val & 0xFFFFF), 19, 0)
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| 119 |
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| 120 | #define XHCI_SLOT_ROUTE_STRING(ctx) XHCI_DWORD_EXTRACT((ctx).data[0], 19, 0)
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| 121 | #define XHCI_SLOT_SPEED(ctx) XHCI_DWORD_EXTRACT((ctx).data[0], 23, 20)
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| 122 | #define XHCI_SLOT_MTT(ctx) XHCI_DWORD_EXTRACT((ctx).data[0], 25, 25)
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| 123 | #define XHCI_SLOT_CTX_ENTRIES(ctx) XHCI_DWORD_EXTRACT((ctx).data[0], 31, 27)
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| 124 |
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| 125 | #define XHCI_SLOT_MAX_EXIT_LATENCY(ctx) XHCI_DWORD_EXTRACT((ctx).data[1], 15, 0)
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| 126 | #define XHCI_SLOT_ROOT_HUB_PORT(ctx) XHCI_DWORD_EXTRACT((ctx).data[1], 23, 16)
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| 127 | #define XHCI_SLOT_NUM_OF_PORTS(ctx) XHCI_DWORD_EXTRACT((ctx).data[1], 31, 24)
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| 128 |
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| 129 | #define XHCI_SLOT_TT_HUB_SLOT_ID(ctx) XHCI_DWORD_EXTRACT((ctx).data[2], 7, 0)
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| 130 | #define XHCI_SLOT_TT_PORT_NUM(ctx) XHCI_DWORD_EXTRACT((ctx).data[2], 15, 8)
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| 131 | #define XHCI_SLOT_TT_THINK_TIME(ctx) XHCI_DWORD_EXTRACT((ctx).data[2], 17, 16)
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| 132 | #define XHCI_SLOT_INTERRUPTER(ctx) XHCI_DWORD_EXTRACT((ctx).data[2], 31, 22)
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| 133 |
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| 134 | #define XHCI_SLOT_DEVICE_ADDRESS(ctx) XHCI_DWORD_EXTRACT((ctx).data[3], 7, 0)
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| 135 | #define XHCI_SLOT_SLOT_STATE(ctx) XHCI_DWORD_EXTRACT((ctx).data[3], 31, 27)
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| 136 |
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| 137 | } __attribute__((packed)) xhci_slot_ctx_t;
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| 138 |
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| 139 | /**
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| 140 | * Device context: section 6.2.1
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| 141 | */
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| 142 | typedef struct xhci_device_ctx {
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| 143 | xhci_slot_ctx_t slot_ctx;
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| 144 | xhci_ep_ctx_t endpoint_ctx[XHCI_EP_COUNT];
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| 145 | } __attribute__((packed)) xhci_device_ctx_t;
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| 146 |
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| 147 | /**
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| 148 | * Stream context: section 6.2.4 {
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| 149 | */
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| 150 | typedef struct xhci_stream_ctx {
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| 151 | uint64_t data [2];
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| 152 | #define XHCI_STREAM_DCS(ctx) XHCI_QWORD_EXTRACT((ctx).data[0], 0, 0)
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| 153 | #define XHCI_STREAM_SCT(ctx) XHCI_QWORD_EXTRACT((ctx).data[0], 3, 1)
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| 154 | #define XHCI_STREAM_DEQ_PTR(ctx) XHCI_QWORD_EXTRACT((ctx).data[0], 63, 4)
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| 155 | #define XHCI_STREAM_EDTLA(ctx) XHCI_QWORD_EXTRACT((ctx).data[1], 24, 0)
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| 156 | } __attribute__((packed)) xhci_stream_ctx_t;
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| 157 |
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| 158 | /**
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| 159 | * Input control context: section 6.2.5.1
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| 160 | * Note: According to section 6.2.5.1 figure 78,
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| 161 | * the context size register value in hccparams1
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| 162 | * dictates whether input control context shall have
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| 163 | * 32 or 64 bytes, but in any case only dwords 0, 1 and 7
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| 164 | * are used, the rest are reserved.
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| 165 | */
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| 166 | typedef struct xhci_input_ctrl_ctx {
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| 167 | uint32_t data [8];
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| 168 | #define XHCI_INPUT_CTRL_CTX_DROP(ctx, idx) \
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| 169 | XHCI_DWORD_EXTRACT((ctx).data[0], (idx), (idx))
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| 170 |
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| 171 | #define XHCI_INPUT_CTRL_CTX_DROP_SET(ctx, idx) (ctx).data[0] |= (1 << (idx))
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| 172 | #define XHCI_INPUT_CTRL_CTX_DROP_CLEAR(ctx, idx) (ctx).data[0] &= ~(1 << (idx))
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| 173 |
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| 174 | #define XHCI_INPUT_CTRL_CTX_ADD(ctx, idx) \
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| 175 | XHCI_DWORD_EXTRACT((ctx).data[1], (idx), (idx))
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| 176 |
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| 177 | #define XHCI_INPUT_CTRL_CTX_ADD_SET(ctx, idx) (ctx).data[1] |= (1 << (idx))
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| 178 | #define XHCI_INPUT_CTRL_CTX_ADD_CLEAR(ctx, idx) (ctx).data[1] &= ~(1 << (idx))
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| 179 |
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| 180 | #define XHCI_INPUT_CTRL_CTX_CONFIG_VALUE(ctx) XHCI_DWORD_EXTRACT((ctx).data[7], 7, 0)
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| 181 | #define XHCI_INPUT_CTRL_CTX_IFACE_NUMBER(ctx) XHCI_DWORD_EXTRACT((ctx).data[7], 15, 8)
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| 182 | #define XHCI_INPUT_CTRL_CTX_ALTER_SETTING(ctx) XHCI_DWORD_EXTRACT((ctx).data[7], 23, 16)
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| 183 | } __attribute__((packed)) xhci_input_ctrl_ctx_t;
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| 184 |
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| 185 | /**
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| 186 | * Input context: section 6.2.5
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| 187 | */
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| 188 | typedef struct xhci_input_ctx {
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| 189 | xhci_input_ctrl_ctx_t ctrl_ctx;
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| 190 | xhci_slot_ctx_t slot_ctx;
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| 191 | xhci_ep_ctx_t endpoint_ctx[XHCI_EP_COUNT];
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| 192 | } __attribute__((packed)) xhci_input_ctx_t;
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| 193 |
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| 194 | /**
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| 195 | * Port bandwidth context: section 6.2.6
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| 196 | * The number of ports depends on the amount of ports available to the hub.
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| 197 | */
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| 198 | typedef struct xhci_port_bandwidth_ctx {
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| 199 | uint8_t reserved;
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| 200 | uint8_t ports [];
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| 201 | } __attribute__((packed)) xhci_port_bandwidth_ctx_t;
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| 202 |
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| 203 | #endif
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