LXR qemu/tests/qtest/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
  27static 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
  38static 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
  44static 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
  50static 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
  56static 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
  66void 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
  80static 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
  86static 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
  92static 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
  98static 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
 109static void sdhci_pci_start_hw(QOSGraphObject *obj)
 110{
 111    QSDHCI_PCI *spci = (QSDHCI_PCI *)obj;
 112    qpci_device_enable(&spci->dev);
 113}
 114
 115static void sdhci_destructor(QOSGraphObject *obj)
 116{
 117    QSDHCI_PCI *spci = (QSDHCI_PCI *)obj;
 118    qpci_iounmap(&spci->dev, spci->mem_bar);
 119}
 120
 121static 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
 140static 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
 164libqos_init(qsdhci_register_nodes);
 165