qemu

sdhci.c (4910B)

---

 /*
  * libqos driver framework
  *
  * Copyright (c) 2018 Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License version 2.1 as published by the Free Software Foundation.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, see <http://www.gnu.org/licenses/>
  */
 
 #include "qemu/osdep.h"
 #include "../libqtest.h"
 #include "qgraph.h"
 #include "pci.h"
 #include "qemu/module.h"
 #include "sdhci.h"
 #include "hw/pci/pci.h"
 
 static void set_qsdhci_fields(QSDHCI *s, uint8_t version, uint8_t baseclock,
                               bool sdma, uint64_t reg)
 {
     s->props.version = version;
     s->props.baseclock = baseclock;
     s->props.capab.sdma = sdma;
     s->props.capab.reg = reg;
 }
 
 /* Memory mapped implementation of QSDHCI */
 
 static uint16_t sdhci_mm_readw(QSDHCI *s, uint32_t reg)
 {
     QSDHCI_MemoryMapped *smm = container_of(s, QSDHCI_MemoryMapped, sdhci);
     return qtest_readw(smm->qts, smm->addr + reg);
 }
 
 static uint64_t sdhci_mm_readq(QSDHCI *s, uint32_t reg)
 {
     QSDHCI_MemoryMapped *smm = container_of(s, QSDHCI_MemoryMapped, sdhci);
     return qtest_readq(smm->qts, smm->addr + reg);
 }
 
 static void sdhci_mm_writeq(QSDHCI *s, uint32_t reg, uint64_t val)
 {
     QSDHCI_MemoryMapped *smm = container_of(s, QSDHCI_MemoryMapped, sdhci);
     qtest_writeq(smm->qts, smm->addr + reg, val);
 }
 
 static void *sdhci_mm_get_driver(void *obj, const char *interface)
 {
     QSDHCI_MemoryMapped *smm = obj;
     if (!g_strcmp0(interface, "sdhci")) {
         return &smm->sdhci;
     }
     fprintf(stderr, "%s not present in generic-sdhci\n", interface);
     g_assert_not_reached();
 }
 
 void qos_init_sdhci_mm(QSDHCI_MemoryMapped *sdhci, QTestState *qts,
                        uint32_t addr, QSDHCIProperties *common)
 {
     sdhci->obj.get_driver = sdhci_mm_get_driver;
     sdhci->sdhci.readw = sdhci_mm_readw;
     sdhci->sdhci.readq = sdhci_mm_readq;
     sdhci->sdhci.writeq = sdhci_mm_writeq;
     memcpy(&sdhci->sdhci.props, common, sizeof(QSDHCIProperties));
     sdhci->addr = addr;
     sdhci->qts = qts;
 }
 
 /* PCI implementation of QSDHCI */
 
 static uint16_t sdhci_pci_readw(QSDHCI *s, uint32_t reg)
 {
     QSDHCI_PCI *spci = container_of(s, QSDHCI_PCI, sdhci);
     return qpci_io_readw(&spci->dev, spci->mem_bar, reg);
 }
 
 static uint64_t sdhci_pci_readq(QSDHCI *s, uint32_t reg)
 {
     QSDHCI_PCI *spci = container_of(s, QSDHCI_PCI, sdhci);
     return qpci_io_readq(&spci->dev, spci->mem_bar, reg);
 }
 
 static void sdhci_pci_writeq(QSDHCI *s, uint32_t reg, uint64_t val)
 {
     QSDHCI_PCI *spci = container_of(s, QSDHCI_PCI, sdhci);
     return qpci_io_writeq(&spci->dev, spci->mem_bar, reg, val);
 }
 
 static void *sdhci_pci_get_driver(void *object, const char *interface)
 {
     QSDHCI_PCI *spci = object;
     if (!g_strcmp0(interface, "sdhci")) {
         return &spci->sdhci;
     }
 
     fprintf(stderr, "%s not present in sdhci-pci\n", interface);
     g_assert_not_reached();
 }
 
 static void sdhci_pci_start_hw(QOSGraphObject *obj)
 {
     QSDHCI_PCI *spci = (QSDHCI_PCI *)obj;
     qpci_device_enable(&spci->dev);
 }
 
 static void sdhci_destructor(QOSGraphObject *obj)
 {
     QSDHCI_PCI *spci = (QSDHCI_PCI *)obj;
     qpci_iounmap(&spci->dev, spci->mem_bar);
 }
 
 static void *sdhci_pci_create(void *pci_bus, QGuestAllocator *alloc, void *addr)
 {
     QSDHCI_PCI *spci = g_new0(QSDHCI_PCI, 1);
     QPCIBus *bus = pci_bus;
     uint64_t barsize;
 
     qpci_device_init(&spci->dev, bus, addr);
     spci->mem_bar = qpci_iomap(&spci->dev, 0, &barsize);
     spci->sdhci.readw = sdhci_pci_readw;
     spci->sdhci.readq = sdhci_pci_readq;
     spci->sdhci.writeq = sdhci_pci_writeq;
     set_qsdhci_fields(&spci->sdhci, 2, 0, 1, 0x057834b4);
 
     spci->obj.get_driver = sdhci_pci_get_driver;
     spci->obj.start_hw = sdhci_pci_start_hw;
     spci->obj.destructor = sdhci_destructor;
     return &spci->obj;
 }
 
 static void qsdhci_register_nodes(void)
 {
     QPCIAddress addr = {
         .devfn = QPCI_DEVFN(4, 0),
         .vendor_id = PCI_VENDOR_ID_REDHAT,
         .device_id = PCI_DEVICE_ID_REDHAT_SDHCI,
     };
 
     QOSGraphEdgeOptions opts = {
         .extra_device_opts = "addr=04.0",
     };
 
     /* generic-sdhci */
     qos_node_create_driver("generic-sdhci", NULL);
     qos_node_produces("generic-sdhci", "sdhci");
 
     /* sdhci-pci */
     add_qpci_address(&opts, &addr);
     qos_node_create_driver("sdhci-pci", sdhci_pci_create);
     qos_node_produces("sdhci-pci", "sdhci");
     qos_node_consumes("sdhci-pci", "pci-bus", &opts);
 
 }
 
 libqos_init(qsdhci_register_nodes);