Re: [Qemu-devel] [PATCH 02/12] qtest: add spapr hypercall support

["Andreas Färber" <afaerber@suse.de>]

Am 19.06.2013 22:40, schrieb Anthony Liguori:
> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
> ---
>  qtest.c          | 29 +++++++++++++++++++++++++++++
>  tests/libqtest.c | 18 ++++++++++++++++++
>  tests/libqtest.h | 46 ++++++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 93 insertions(+)
> 
> diff --git a/qtest.c b/qtest.c
> index 07a9612..f8c8f44 100644
> --- a/qtest.c
> +++ b/qtest.c
> @@ -19,6 +19,9 @@
>  #include "hw/irq.h"
>  #include "sysemu/sysemu.h"
>  #include "sysemu/cpus.h"
> +#ifdef TARGET_PPC64
> +#include "hw/ppc/spapr.h"
> +#endif
>  
>  #define MAX_IRQ 256
>  
> @@ -141,6 +144,13 @@ static bool qtest_opened;
>   * where NUM is an IRQ number.  For the PC, interrupts can be intercepted
>   * simply with "irq_intercept_in ioapic" (note that IRQ0 comes out with
>   * NUM=0 even though it is remapped to GSI 2).
> + *
> + * Platform specific (sPAPR):
> + *
> + *  > papr_hypercall NR ARG0 ARG1 ... ARG8

The functions are called spapr_hcall*() but the protocol uses
papr_hypercall?

> + *  < OK RET
> + *
> + * where NR, ARG[0-8] and RET are all integers.
>   */
>  
>  static int hex2nib(char ch)
> @@ -425,6 +435,25 @@ static void qtest_process_command(CharDriverState *chr, gchar **words)
>          qtest_clock_warp(ns);
>          qtest_send_prefix(chr);
>          qtest_send(chr, "OK %"PRIi64"\n", (int64_t)qemu_get_clock_ns(vm_clock));
> +#ifdef TARGET_PPC64
> +    } else if (strcmp(words[0], "papr_hypercall") == 0) {
> +        uint64_t nr;
> +        uint64_t args[9];
> +        uint64_t ret;
> +        int i;
> +
> +        memset(args, 0, sizeof(args));
> +        g_assert(words[1]);
> +        nr = strtoull(words[1], NULL, 0);
> +        for (i = 0; i < 9; i++) {
> +            if (words[2 + i] == NULL) {
> +                break;
> +            }
> +            args[i] = strtoull(words[2 + i], NULL, 0);
> +        }
> +        ret = spapr_hypercall(ppc_env_get_cpu(first_cpu), nr, args);
> +        qtest_send(chr, "OK 0x%" PRIx64 "\n", ret);
> +#endif
>      } else {
>          qtest_send_prefix(chr);
>          qtest_send(chr, "FAIL Unknown command `%s'\n", words[0]);
> diff --git a/tests/libqtest.c b/tests/libqtest.c
> index 879ffe9..81107cf 100644
> --- a/tests/libqtest.c
> +++ b/tests/libqtest.c
> @@ -544,3 +544,21 @@ void qtest_memwrite(QTestState *s, uint64_t addr, const void *data, size_t size)
>      qtest_sendf(s, "\n");
>      qtest_rsp(s, 0);
>  }
> +
> +uint64_t qtest_spapr_hcall9(QTestState *s, uint64_t nr, uint64_t a0,
> +                            uint64_t a1, uint64_t a2, uint64_t a3, uint64_t a4,
> +                            uint64_t a5, uint64_t a6, uint64_t a7, uint64_t a8)
> +{
> +    gchar **args;
> +    uint64_t value;
> +
> +    qtest_sendf(s, "papr_hypercall 0x%" PRIx64 " 0x%" PRIx64
> +                " 0x%" PRIx64 " 0x%" PRIx64 " 0x%" PRIx64 " 0x%" PRIx64 
> +                " 0x%" PRIx64 " 0x%" PRIx64 " 0x%" PRIx64 " 0x%" PRIx64 
> +                "\n", nr, a0, a1, a2, a3, a4, a5, a6, a7, a8);
> +    args = qtest_rsp(s, 2);
> +    value = strtoull(args[1], NULL, 0);
> +    g_strfreev(args);
> +
> +    return value;
> +}
> diff --git a/tests/libqtest.h b/tests/libqtest.h
> index 437bda3..592f035 100644
> --- a/tests/libqtest.h
> +++ b/tests/libqtest.h
> @@ -286,6 +286,19 @@ int64_t qtest_clock_step(QTestState *s, int64_t step);
>  int64_t qtest_clock_set(QTestState *s, int64_t val);
>  
>  /**
> + * qtest_spapr_hcall9:
> + * @s: QTestState instance to operate on.
> + * @nr: The hypercall index
> + * @aN: The @Nth hypercall argument
> + *
> + * Issue an sPAPR hypercall
> + *
> + * Returns: The result of the hypercall.
> + */
> +uint64_t qtest_spapr_hcall9(QTestState *s, uint64_t nr, uint64_t a0,
> +                            uint64_t a1, uint64_t a2, uint64_t a3, uint64_t a4,
> +                            uint64_t a5, uint64_t a6, uint64_t a7, uint64_t a8);
> +/**
>   * qtest_get_arch:
>   *
>   * Returns: The architecture for the QEMU executable under test.
> @@ -607,4 +620,37 @@ static inline int64_t clock_set(int64_t val)
>      return qtest_clock_set(global_qtest, val);
>  }
>  
> +static inline uint64_t spapr_hcall0(uint64_t nr)
> +{
> +    return qtest_spapr_hcall9(global_qtest, nr, 0, 0, 0, 0, 0, 0, 0, 0, 0);
> +}
> +
> +static inline uint64_t spapr_hcall1(uint64_t nr, uint64_t a0)
> +{
> +    return qtest_spapr_hcall9(global_qtest, nr, a0, 0, 0, 0, 0, 0, 0, 0, 0);
> +}
> +
> +static inline uint64_t spapr_hcall2(uint64_t nr, uint64_t a0, uint64_t a1)
> +{
> +    return qtest_spapr_hcall9(global_qtest, nr, a0, a1, 0, 0, 0, 0, 0, 0, 0);
> +}
> +
> +static inline uint64_t spapr_hcall3(uint64_t nr, uint64_t a0, uint64_t a1,
> +                                    uint64_t a2)
> +{
> +    return qtest_spapr_hcall9(global_qtest, nr, a0, a1, a2, 0, 0, 0, 0, 0, 0);
> +}
> +
> +static inline uint64_t spapr_hcall4(uint64_t nr, uint64_t a0, uint64_t a1,
> +                                    uint64_t a2, uint64_t a3)
> +{
> +    return qtest_spapr_hcall9(global_qtest, nr, a0, a1, a2, a3, 0, 0, 0, 0, 0);
> +}
> +
> +static inline uint64_t spapr_hcall5(uint64_t nr, uint64_t a0, uint64_t a1,
> +                                    uint64_t a2, uint64_t a3, uint64_t a4)
> +{
> +    return qtest_spapr_hcall9(global_qtest, nr, a0, a1, a2, a3, a4, 0, 0, 0, 0);
> +}

While for a large number of almost identical helpers this certainly
sucks, I made an effort to document all functions in that file, so
please keep it that way. :)

Looks very similar to what I had proposed for s390x, so fine with me.

Regards,
Andreas

> +
>  #endif
> 


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