tests/libqos/sdhci.c

   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 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 "libqos/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);