Re: [Qemu-devel] [PATCH v9 02/16] sdhci: add qtest to check the SD capabilities register

[Paolo Bonzini <pbonzini@redhat.com>]

On 23/01/2018 03:08, Philippe Mathieu-Daudé wrote:
> The PCI model is tested with the pc/x86_64 machine,
> the SysBus model with the smdkc210/arm machine.
> 
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
>  tests/sdhci-test.c     | 134 +++++++++++++++++++++++++++++++++++++++++++++++++
>  tests/Makefile.include |   3 ++
>  2 files changed, 137 insertions(+)
>  create mode 100644 tests/sdhci-test.c
> 
> diff --git a/tests/sdhci-test.c b/tests/sdhci-test.c
> new file mode 100644
> index 0000000000..517e2ed5a2
> --- /dev/null
> +++ b/tests/sdhci-test.c
> @@ -0,0 +1,134 @@
> +/*
> + * QTest testcase for SDHCI controllers
> + *
> + * Written by Philippe Mathieu-Daudé <f4bug@amsat.org>
> + *
> + * This work is licensed under the terms of the GNU GPL, version 2 or later.
> + * See the COPYING file in the top-level directory.
> + * SPDX-License-Identifier: GPL-2.0-or-later
> + */
> +#include "qemu/osdep.h"
> +#include "hw/registerfields.h"
> +#include "libqtest.h"
> +#include "libqos/pci-pc.h"
> +#include "hw/pci/pci.h"
> +
> +#define SDHC_CAPAB                      0x40
> +#define SDHC_HCVER                      0xFE
> +
> +static const struct sdhci_t {
> +    const char *arch, *machine;
> +    struct {
> +        uintptr_t addr;
> +        uint8_t version;
> +        uint8_t baseclock;
> +        struct {
> +            bool sdma;
> +            uint64_t reg;
> +        } capab;
> +    } sdhci;
> +    struct {
> +        uint16_t vendor_id, device_id;
> +    } pci;
> +} models[] = {
> +    /* PC via PCI */
> +    { "x86_64", "pc",
> +        {-1,         2, 0,  {1, 0x057834b4} },
> +        .pci = { PCI_VENDOR_ID_REDHAT, PCI_DEVICE_ID_REDHAT_SDHCI } },
> +
> +    /* Exynos4210 */
> +    { "arm",    "smdkc210",
> +        {0x12510000, 2, 0,  {1, 0x5e80080} } },
> +};
> +
> +static struct {
> +    QPCIBus *pcibus;
> +    QPCIDevice *dev;
> +    QPCIBar mem_bar;
> +} g = { };
> +
> +static uint64_t sdhci_readq(uintptr_t base, uint32_t reg_addr)
> +{
> +    if (g.dev) {
> +        uint64_t value;
> +
> +        qpci_memread(g.dev, g.mem_bar, reg_addr, &value, sizeof(value));
> +
> +        return value;
> +    } else {
> +        QTestState *qtest = global_qtest;
> +
> +        return qtest_readq(qtest, base + reg_addr);
> +    }
> +}

Maybe the struct about could be a "QSDHCI*" that is returned by
machine_start and accepted by sdhci_readq and check_capab_capareg?
Later the same would work for sdhci_readl, check_specs_version, etc.

That's my only remark though.  Thanks!

Paolo

> +static void check_capab_capareg(uintptr_t addr, uint64_t expected_capab)
> +{
> +    uint64_t capab;
> +
> +    capab = sdhci_readq(addr, SDHC_CAPAB);
> +    g_assert_cmphex(capab, ==, expected_capab);
> +}
> +
> +static void machine_start(const struct sdhci_t *test)
> +{
> +    if (test->pci.vendor_id) {
> +        /* PCI */
> +        uint16_t vendor_id, device_id;
> +        uint64_t barsize;
> +
> +        global_qtest = qtest_startf("-machine %s -d unimp -device sdhci-pci",
> +                                    test->machine);
> +
> +        g.pcibus = qpci_init_pc(NULL);
> +
> +        /* Find PCI device and verify it's the right one */
> +        g.dev = qpci_device_find(g.pcibus, QPCI_DEVFN(4, 0));
> +        g_assert_nonnull(g.dev);
> +        vendor_id = qpci_config_readw(g.dev, PCI_VENDOR_ID);
> +        device_id = qpci_config_readw(g.dev, PCI_DEVICE_ID);
> +        g_assert(vendor_id == test->pci.vendor_id);
> +        g_assert(device_id == test->pci.device_id);
> +        g.mem_bar = qpci_iomap(g.dev, 0, &barsize);
> +        qpci_device_enable(g.dev);
> +    } else {
> +        /* SysBus */
> +        global_qtest = qtest_startf("-machine %s -d unimp", test->machine);
> +    }
> +}
> +
> +static void machine_stop(void)
> +{
> +    g_free(g.dev);
> +    qtest_quit(global_qtest);
> +}
> +
> +static void test_machine(const void *data)
> +{
> +    const struct sdhci_t *test = data;
> +
> +    machine_start(test);
> +
> +    check_capab_capareg(test->sdhci.addr, test->sdhci.capab.reg);
> +
> +    machine_stop();
> +}
> +
> +int main(int argc, char *argv[])
> +{
> +    const char *arch = qtest_get_arch();
> +    char *name;
> +    int i;
> +
> +    g_test_init(&argc, &argv, NULL);
> +    for (i = 0; i < ARRAY_SIZE(models); i++) {
> +        if (strcmp(arch, models[i].arch)) {
> +            continue;
> +        }
> +        name = g_strdup_printf("sdhci/%s", models[i].machine);
> +        qtest_add_data_func(name, &models[i], test_machine);
> +        g_free(name);
> +    }
> +
> +    return g_test_run();
> +}
> diff --git a/tests/Makefile.include b/tests/Makefile.include
> index 8883274ae1..756725b0f9 100644
> --- a/tests/Makefile.include
> +++ b/tests/Makefile.include
> @@ -293,6 +293,7 @@ check-qtest-i386-y += tests/migration-test$(EXESUF)
>  check-qtest-i386-y += tests/test-x86-cpuid-compat$(EXESUF)
>  check-qtest-i386-y += tests/numa-test$(EXESUF)
>  check-qtest-x86_64-y += $(check-qtest-i386-y)
> +check-qtest-x86_64-y += tests/sdhci-test$(EXESUF)
>  gcov-files-i386-y += i386-softmmu/hw/timer/mc146818rtc.c
>  gcov-files-x86_64-y = $(subst i386-softmmu/,x86_64-softmmu/,$(gcov-files-i386-y))
>  
> @@ -363,6 +364,7 @@ gcov-files-arm-y += arm-softmmu/hw/block/virtio-blk.c
>  check-qtest-arm-y += tests/test-arm-mptimer$(EXESUF)
>  gcov-files-arm-y += hw/timer/arm_mptimer.c
>  check-qtest-arm-y += tests/boot-serial-test$(EXESUF)
> +check-qtest-arm-y += tests/sdhci-test$(EXESUF)
>  
>  check-qtest-aarch64-y = tests/numa-test$(EXESUF)
>  
> @@ -816,6 +818,7 @@ tests/test-arm-mptimer$(EXESUF): tests/test-arm-mptimer.o
>  tests/test-qapi-util$(EXESUF): tests/test-qapi-util.o $(test-util-obj-y)
>  tests/numa-test$(EXESUF): tests/numa-test.o
>  tests/vmgenid-test$(EXESUF): tests/vmgenid-test.o tests/boot-sector.o tests/acpi-utils.o
> +tests/sdhci-test$(EXESUF): tests/sdhci-test.o $(libqos-pc-obj-y)
>  
>  tests/migration/stress$(EXESUF): tests/migration/stress.o
>  	$(call quiet-command, $(LINKPROG) -static -O3 $(PTHREAD_LIB) -o $@ $< ,"LINK","$(TARGET_DIR)$@")
>