Re: [Qemu-devel] [PATCH v3 11/16] boot-order-test: Better separate target-specific and generic parts

[Anthony Liguori <aliguori@us.ibm.com>]

Markus Armbruster <armbru@redhat.com> writes:

> The initial version did just PC.  I didn't bother to separate out
> generic parts, because I don't like to abstract from a single case.
>
> Now we have two cases, PC and PowerMac, and I'm about to add two more.
> Time to do it right.
>
> To ease review, this commit changes the code without in-place, and
> only the next commit reorders it for better readability.
>
> Cc: Andreas Färber <afaerber@suse.de>
> Cc: Alexander Graf <agraf@suse.de>
> Cc: qemu-ppc@nongnu.org
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---
>  tests/boot-order-test.c | 160 ++++++++++++++++++++++++++++++------------------
>  1 file changed, 99 insertions(+), 61 deletions(-)
>
> diff --git a/tests/boot-order-test.c b/tests/boot-order-test.c
> index f6dece6..23edacf 100644
> --- a/tests/boot-order-test.c
> +++ b/tests/boot-order-test.c
> @@ -15,106 +15,141 @@
>  #include "libqtest.h"
>  #include "qemu/bswap.h"
>  
> -static void test_pc_cmos_byte(int reg, int expected)
> +static uint8_t read_mc146818(uint16_t port, uint8_t reg)
>  {
> -    int actual;
> -
> -    outb(0x70, reg);
> -    actual = inb(0x71);
> -    g_assert_cmphex(actual, ==, expected);
> +    outb(port, reg);
> +    return inb(port + 1);
>  }

It's worth looking at the rtc-test case and pulling out
cmos_read/write() into libqos I suspect.

Regards,

Anthony Liguori

>  
> -static void test_pc_cmos(uint8_t boot1, uint8_t boot2)
> +static uint64_t read_boot_order_pc(void)
>  {
> -    test_pc_cmos_byte(0x38, boot1);
> -    test_pc_cmos_byte(0x3d, boot2);
> +    uint8_t b1 = read_mc146818(0x70, 0x38);
> +    uint8_t b2 = read_mc146818(0x70, 0x3d);
> +
> +    return b1 | (b2 << 8);
>  }
>  
> -static void test_pc_with_args(const char *test_args,
> -                              uint8_t boot1, uint8_t boot2,
> -                              uint8_t reboot1, uint8_t reboot2)
> +static void test_a_boot_order(const char *machine,
> +                              const char *test_args,
> +                              uint64_t (*read_boot_order)(void),
> +                              uint64_t expected_boot,
> +                              uint64_t expected_reboot)
>  {
> -    char *args = g_strdup_printf("-nodefaults -display none %s", test_args);
> +    char *args;
> +    uint64_t actual;
>  
> +    args = g_strdup_printf("-nodefaults -display none%s%s %s",
> +                           machine ? " -M " : "",
> +                           machine ?: "",
> +                           test_args);
>      qtest_start(args);
> -    test_pc_cmos(boot1, boot2);
> +    actual = read_boot_order();
> +    g_assert_cmphex(actual, ==, expected_boot);
>      qmp("{ 'execute': 'system_reset' }");
> -    test_pc_cmos(reboot1, reboot2);
> +    actual = read_boot_order();
> +    g_assert_cmphex(actual, ==, expected_reboot);
>      qtest_quit(global_qtest);
>      g_free(args);
>  }
>  
> +typedef struct {
> +    const char *args;
> +    uint64_t expected_boot;
> +    uint64_t expected_reboot;
> +} boot_order_test;
> +
> +static void test_boot_orders(const char *machine,
> +                             uint64_t (*read_boot_order)(void),
> +                             const boot_order_test *tests)
> +{
> +    int i;
> +
> +    for (i = 0; tests[i].args; i++) {
> +        test_a_boot_order(machine, tests[i].args,
> +                          read_boot_order,
> +                          tests[i].expected_boot,
> +                          tests[i].expected_reboot);
> +    }
> +}
> +
> +static const boot_order_test test_cases_pc[] = {
> +    { "",
> +      0x1230, 0x1230 },
> +    { "-no-fd-bootchk",
> +      0x1231, 0x1231 },
> +    { "-boot c",
> +      0x0200, 0x0200 },
> +    { "-boot nda",
> +      0x3410, 0x3410 },
> +    { "-boot order=",
> +      0, 0 },
> +    { "-boot order= -boot order=c",
> +      0x0200, 0x0200 },
> +    { "-boot once=a",
> +      0x0100, 0x1230 },
> +    { "-boot once=a -no-fd-bootchk",
> +      0x0101, 0x1231 },
> +    { "-boot once=a,order=c",
> +      0x0100, 0x0200 },
> +    { "-boot once=d -boot order=nda",
> +      0x0300, 0x3410 },
> +    { "-boot once=a -boot once=b -boot once=c",
> +      0x0200, 0x1230 },
> +    {}
> +};
> +
>  static void test_pc_boot_order(void)
>  {
> -    test_pc_with_args("", 0x30, 0x12, 0x30, 0x12);
> -    test_pc_with_args("-no-fd-bootchk", 0x31, 0x12, 0x31, 0x12);
> -    test_pc_with_args("-boot c", 0, 0x02, 0, 0x02);
> -    test_pc_with_args("-boot nda", 0x10, 0x34, 0x10, 0x34);
> -    test_pc_with_args("-boot order=", 0, 0, 0, 0);
> -    test_pc_with_args("-boot order= -boot order=c", 0, 0x02, 0, 0x02);
> -    test_pc_with_args("-boot once=a", 0, 0x01, 0x30, 0x12);
> -    test_pc_with_args("-boot once=a -no-fd-bootchk", 0x01, 0x01, 0x31, 0x12);
> -    test_pc_with_args("-boot once=a,order=c", 0, 0x01, 0, 0x02);
> -    test_pc_with_args("-boot once=d -boot order=nda", 0, 0x03, 0x10, 0x34);
> -    test_pc_with_args("-boot once=a -boot once=b -boot once=c",
> -                      0, 0x02, 0x30, 0x12);
> +    test_boot_orders(NULL, read_boot_order_pc, test_cases_pc);
>  }
>  
> -#define G3BEIGE_CFG_ADDR 0xf0000510
> -#define MAC99_CFG_ADDR   0xf0000510
> +#define PMAC_CFG_ADDR 0xf0000510
>  
>  #define NO_QEMU_PROTOS
>  #include "hw/nvram/fw_cfg.h"
>  #undef NO_QEMU_PROTOS
>  
> -static void powermac_fw_cfg_read(bool newworld, uint16_t cmd,
> -                                 uint8_t *buf, unsigned int len)
> +static void read_fw_cfg(uint64_t cfg_addr, uint16_t cmd,
> +                        void *buf, size_t len)
>  {
> -    unsigned int i;
> +    uint8_t *p = buf;
> +    size_t i;
>  
> -    writew(newworld ? MAC99_CFG_ADDR : G3BEIGE_CFG_ADDR, cmd);
> +    writew(cfg_addr, cmd);
>      for (i = 0; i < len; i++) {
> -        buf[i] = readb((newworld ? MAC99_CFG_ADDR : G3BEIGE_CFG_ADDR) + 2);
> +        p[i] = readb(cfg_addr + 2);
>      }
>  }
>  
> -static uint16_t powermac_fw_cfg_read16(bool newworld, uint16_t cmd)
> +static uint16_t read_fw_cfg_i16(uint64_t cfg_addr, uint16_t cmd)
>  {
>      uint16_t value;
>  
> -    powermac_fw_cfg_read(newworld, cmd, (uint8_t *)&value, sizeof(value));
> +    read_fw_cfg(cfg_addr, cmd, &value, sizeof(value));
>      return le16_to_cpu(value);
>  }
>  
> -static void test_powermac_with_args(bool newworld, const char *extra_args,
> -                                    uint16_t expected_boot,
> -                                    uint16_t expected_reboot)
> +static uint64_t read_boot_order_pmac(void)
>  {
> -    char *args = g_strdup_printf("-nodefaults -display none -machine %s %s",
> -                                 newworld ? "mac99" : "g3beige", extra_args);
> -    uint16_t actual;
> -    qtest_start(args);
> -    actual = powermac_fw_cfg_read16(newworld, FW_CFG_BOOT_DEVICE);
> -    g_assert_cmphex(actual, ==, expected_boot);
> -    qmp("{ 'execute': 'system_reset' }");
> -    actual = powermac_fw_cfg_read16(newworld, FW_CFG_BOOT_DEVICE);
> -    g_assert_cmphex(actual, ==, expected_reboot);
> -    qtest_quit(global_qtest);
> -    g_free(args);
> +    return read_fw_cfg_i16(PMAC_CFG_ADDR, FW_CFG_BOOT_DEVICE);
>  }
>  
> -static void test_powermac_boot_order(void)
> -{
> -    int i;
> +static const boot_order_test test_cases_fw_cfg[] = {
> +    { "", 'c', 'c' },
> +    { "-boot c", 'c', 'c' },
> +    { "-boot d", 'd', 'd' },
> +    { "-boot once=d,order=c", 'd', 'c' },
> +    {}
> +};
>  
> -    for (i = 0; i < 2; i++) {
> -        bool newworld = (i == 1);
> +static void test_pmac_oldworld_boot_order(void)
> +{
> +    test_boot_orders("g3beige", read_boot_order_pmac, test_cases_fw_cfg);
> +}
>  
> -        test_powermac_with_args(newworld, "", 'c', 'c');
> -        test_powermac_with_args(newworld, "-boot c", 'c', 'c');
> -        test_powermac_with_args(newworld, "-boot d", 'd', 'd');
> -        test_powermac_with_args(newworld, "-boot once=d,order=c", 'd', 'c');
> -    }
> +static void test_pmac_newworld_boot_order(void)
> +{
> +    test_boot_orders("mac99", read_boot_order_pmac, test_cases_fw_cfg);
>  }
>  
>  int main(int argc, char *argv[])
> @@ -126,7 +161,10 @@ int main(int argc, char *argv[])
>      if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
>          qtest_add_func("boot-order/pc", test_pc_boot_order);
>      } else if (strcmp(arch, "ppc") == 0 || strcmp(arch, "ppc64") == 0) {
> -        qtest_add_func("boot-order/powermac", test_powermac_boot_order);
> +        qtest_add_func("boot-order/pmac_oldworld",
> +                       test_pmac_oldworld_boot_order);
> +        qtest_add_func("boot-order/pmac_newworld",
> +                       test_pmac_newworld_boot_order);
>      }
>  
>      return g_test_run();
> -- 
> 1.7.11.7