Re: [Qemu-devel] [PATCH 22/71] tests/libqos: sdhci driver and interface nodes

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 12/3/18 4:32 PM, Paolo Bonzini wrote:
> From: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
> 
> Add qgraph nodes for sdhci-pci and generic-sdhci (memory mapped) drivers.
> Both drivers implement (produce) the same interface sdhci, that provides the
> readw - readq - writeq functions.
> 
> Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
>  tests/Makefile.include |   1 +
>  tests/libqos/sdhci.c   | 163 +++++++++++++++++++++++++++++++++++++++++++++++++
>  tests/libqos/sdhci.h   |  70 +++++++++++++++++++++
>  3 files changed, 234 insertions(+)
>  create mode 100644 tests/libqos/sdhci.c
>  create mode 100644 tests/libqos/sdhci.h
> 
> diff --git a/tests/Makefile.include b/tests/Makefile.include
> index 1266109..66c7848 100644
> --- a/tests/Makefile.include
> +++ b/tests/Makefile.include
> @@ -678,6 +678,7 @@ libqos-virtio-obj-y = $(libqos-spapr-obj-y) $(libqos-pc-obj-y) tests/libqos/virt
>  # Devices
>  qos-test-obj-y = tests/qos-test.o $(libqgraph-obj-y)
>  qos-test-obj-y += $(libqos-pc-obj-y)
> +qos-test-obj-y += tests/libqos/sdhci.o
>  
>  # Machines
>  qos-test-obj-y += tests/libqos/x86_64_pc-machine.o
> diff --git a/tests/libqos/sdhci.c b/tests/libqos/sdhci.c
> new file mode 100644
> index 0000000..0685bee
> --- /dev/null
> +++ b/tests/libqos/sdhci.c
> @@ -0,0 +1,163 @@
> +/*
> + * 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 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 "libqos/qgraph.h"
> +#include "pci.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)

sdhci_pci_destructor()

> +{
> +    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",

Shouldn't this be formatted from the previous QPCIAddress?

> +    };
> +
> +    /* 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);
> diff --git a/tests/libqos/sdhci.h b/tests/libqos/sdhci.h
> new file mode 100644
> index 0000000..e9880fc
> --- /dev/null
> +++ b/tests/libqos/sdhci.h
> @@ -0,0 +1,70 @@
> +/*
> + * 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 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/>
> + */
> +
> +#ifndef QGRAPH_QSDHCI
> +#define QGRAPH_QSDHCI
> +
> +#include "libqos/qgraph.h"
> +#include "pci.h"
> +
> +typedef struct QSDHCI QSDHCI;
> +typedef struct QSDHCI_MemoryMapped QSDHCI_MemoryMapped;
> +typedef struct QSDHCI_PCI  QSDHCI_PCI;
> +typedef struct QSDHCIProperties QSDHCIProperties;
> +
> +/* Properties common to all QSDHCI devices */
> +struct QSDHCIProperties {
> +    uint8_t version;
> +    uint8_t baseclock;
> +    struct {
> +        bool sdma;
> +        uint64_t reg;
> +    } capab;
> +};
> +
> +struct QSDHCI {
> +    uint16_t (*readw)(QSDHCI *s, uint32_t reg);
> +    uint64_t (*readq)(QSDHCI *s, uint32_t reg);
> +    void (*writeq)(QSDHCI *s, uint32_t reg, uint64_t val);
> +    QSDHCIProperties props;
> +};
> +
> +/* Memory Mapped implementation of QSDHCI */
> +struct QSDHCI_MemoryMapped {
> +    QOSGraphObject obj;
> +    QTestState *qts;

Maybe 'teststate' or 'state' rather than 'qts'.

> +    QSDHCI sdhci;
> +    uint64_t addr;
> +};
> +
> +/* PCI implementation of QSDHCI */
> +struct QSDHCI_PCI {
> +    QOSGraphObject obj;
> +    QPCIDevice dev;
> +    QSDHCI sdhci;
> +    QPCIBar mem_bar;
> +};
> +
> +/**
> + * qos_init_sdhci_mm(): external constructor used by all drivers/machines
> + * that "contain" a #QSDHCI_MemoryMapped driver
> + */
> +void qos_init_sdhci_mm(QSDHCI_MemoryMapped *sdhci, QTestState *qts,
> +		       uint32_t addr, QSDHCIProperties *common);
> +
> +#endif
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>