| 1 | /* |
| 2 | * libqos driver framework |
| 3 | * |
| 4 | * Copyright (c) 2018 Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com> |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License version 2.1 as published by the Free Software Foundation. |
| 9 | * |
| 10 | * This library is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | * Lesser General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU Lesser General Public |
| 16 | * License along with this library; if not, see <http://www.gnu.org/licenses/> |
| 17 | */ |
| 18 | |
| 19 | #include "qemu/osdep.h" |
| 20 | #include "../libqtest.h" |
| 21 | #include "qgraph.h" |
| 22 | #include "pci.h" |
| 23 | #include "qemu/module.h" |
| 24 | #include "sdhci.h" |
| 25 | #include "hw/pci/pci.h" |
| 26 | |
| 27 | static void set_qsdhci_fields(QSDHCI *s, uint8_t version, uint8_t baseclock, |
| 28 | bool sdma, uint64_t reg) |
| 29 | { |
| 30 | s->props.version = version; |
| 31 | s->props.baseclock = baseclock; |
| 32 | s->props.capab.sdma = sdma; |
| 33 | s->props.capab.reg = reg; |
| 34 | } |
| 35 | |
| 36 | /* Memory mapped implementation of QSDHCI */ |
| 37 | |
| 38 | static uint16_t sdhci_mm_readw(QSDHCI *s, uint32_t reg) |
| 39 | { |
| 40 | QSDHCI_MemoryMapped *smm = container_of(s, QSDHCI_MemoryMapped, sdhci); |
| 41 | return qtest_readw(smm->qts, smm->addr + reg); |
| 42 | } |
| 43 | |
| 44 | static uint64_t sdhci_mm_readq(QSDHCI *s, uint32_t reg) |
| 45 | { |
| 46 | QSDHCI_MemoryMapped *smm = container_of(s, QSDHCI_MemoryMapped, sdhci); |
| 47 | return qtest_readq(smm->qts, smm->addr + reg); |
| 48 | } |
| 49 | |
| 50 | static void sdhci_mm_writeq(QSDHCI *s, uint32_t reg, uint64_t val) |
| 51 | { |
| 52 | QSDHCI_MemoryMapped *smm = container_of(s, QSDHCI_MemoryMapped, sdhci); |
| 53 | qtest_writeq(smm->qts, smm->addr + reg, val); |
| 54 | } |
| 55 | |
| 56 | static void *sdhci_mm_get_driver(void *obj, const char *interface) |
| 57 | { |
| 58 | QSDHCI_MemoryMapped *smm = obj; |
| 59 | if (!g_strcmp0(interface, "sdhci")) { |
| 60 | return &smm->sdhci; |
| 61 | } |
| 62 | fprintf(stderr, "%s not present in generic-sdhci\n", interface); |
| 63 | g_assert_not_reached(); |
| 64 | } |
| 65 | |
| 66 | void qos_init_sdhci_mm(QSDHCI_MemoryMapped *sdhci, QTestState *qts, |
| 67 | uint32_t addr, QSDHCIProperties *common) |
| 68 | { |
| 69 | sdhci->obj.get_driver = sdhci_mm_get_driver; |
| 70 | sdhci->sdhci.readw = sdhci_mm_readw; |
| 71 | sdhci->sdhci.readq = sdhci_mm_readq; |
| 72 | sdhci->sdhci.writeq = sdhci_mm_writeq; |
| 73 | memcpy(&sdhci->sdhci.props, common, sizeof(QSDHCIProperties)); |
| 74 | sdhci->addr = addr; |
| 75 | sdhci->qts = qts; |
| 76 | } |
| 77 | |
| 78 | /* PCI implementation of QSDHCI */ |
| 79 | |
| 80 | static uint16_t sdhci_pci_readw(QSDHCI *s, uint32_t reg) |
| 81 | { |
| 82 | QSDHCI_PCI *spci = container_of(s, QSDHCI_PCI, sdhci); |
| 83 | return qpci_io_readw(&spci->dev, spci->mem_bar, reg); |
| 84 | } |
| 85 | |
| 86 | static uint64_t sdhci_pci_readq(QSDHCI *s, uint32_t reg) |
| 87 | { |
| 88 | QSDHCI_PCI *spci = container_of(s, QSDHCI_PCI, sdhci); |
| 89 | return qpci_io_readq(&spci->dev, spci->mem_bar, reg); |
| 90 | } |
| 91 | |
| 92 | static void sdhci_pci_writeq(QSDHCI *s, uint32_t reg, uint64_t val) |
| 93 | { |
| 94 | QSDHCI_PCI *spci = container_of(s, QSDHCI_PCI, sdhci); |
| 95 | return qpci_io_writeq(&spci->dev, spci->mem_bar, reg, val); |
| 96 | } |
| 97 | |
| 98 | static void *sdhci_pci_get_driver(void *object, const char *interface) |
| 99 | { |
| 100 | QSDHCI_PCI *spci = object; |
| 101 | if (!g_strcmp0(interface, "sdhci")) { |
| 102 | return &spci->sdhci; |
| 103 | } |
| 104 | |
| 105 | fprintf(stderr, "%s not present in sdhci-pci\n", interface); |
| 106 | g_assert_not_reached(); |
| 107 | } |
| 108 | |
| 109 | static void sdhci_pci_start_hw(QOSGraphObject *obj) |
| 110 | { |
| 111 | QSDHCI_PCI *spci = (QSDHCI_PCI *)obj; |
| 112 | qpci_device_enable(&spci->dev); |
| 113 | } |
| 114 | |
| 115 | static void sdhci_destructor(QOSGraphObject *obj) |
| 116 | { |
| 117 | QSDHCI_PCI *spci = (QSDHCI_PCI *)obj; |
| 118 | qpci_iounmap(&spci->dev, spci->mem_bar); |
| 119 | } |
| 120 | |
| 121 | static void *sdhci_pci_create(void *pci_bus, QGuestAllocator *alloc, void *addr) |
| 122 | { |
| 123 | QSDHCI_PCI *spci = g_new0(QSDHCI_PCI, 1); |
| 124 | QPCIBus *bus = pci_bus; |
| 125 | uint64_t barsize; |
| 126 | |
| 127 | qpci_device_init(&spci->dev, bus, addr); |
| 128 | spci->mem_bar = qpci_iomap(&spci->dev, 0, &barsize); |
| 129 | spci->sdhci.readw = sdhci_pci_readw; |
| 130 | spci->sdhci.readq = sdhci_pci_readq; |
| 131 | spci->sdhci.writeq = sdhci_pci_writeq; |
| 132 | set_qsdhci_fields(&spci->sdhci, 2, 0, 1, 0x057834b4); |
| 133 | |
| 134 | spci->obj.get_driver = sdhci_pci_get_driver; |
| 135 | spci->obj.start_hw = sdhci_pci_start_hw; |
| 136 | spci->obj.destructor = sdhci_destructor; |
| 137 | return &spci->obj; |
| 138 | } |
| 139 | |
| 140 | static void qsdhci_register_nodes(void) |
| 141 | { |
| 142 | QPCIAddress addr = { |
| 143 | .devfn = QPCI_DEVFN(4, 0), |
| 144 | .vendor_id = PCI_VENDOR_ID_REDHAT, |
| 145 | .device_id = PCI_DEVICE_ID_REDHAT_SDHCI, |
| 146 | }; |
| 147 | |
| 148 | QOSGraphEdgeOptions opts = { |
| 149 | .extra_device_opts = "addr=04.0", |
| 150 | }; |
| 151 | |
| 152 | /* generic-sdhci */ |
| 153 | qos_node_create_driver("generic-sdhci", NULL); |
| 154 | qos_node_produces("generic-sdhci", "sdhci"); |
| 155 | |
| 156 | /* sdhci-pci */ |
| 157 | add_qpci_address(&opts, &addr); |
| 158 | qos_node_create_driver("sdhci-pci", sdhci_pci_create); |
| 159 | qos_node_produces("sdhci-pci", "sdhci"); |
| 160 | qos_node_consumes("sdhci-pci", "pci-bus", &opts); |
| 161 | |
| 162 | } |
| 163 | |
| 164 | libqos_init(qsdhci_register_nodes); |