Re: [Qemu-devel] [PULL 03/12] target-arm: Add support for PMU register PMINTENSET_EL1

[Aaron Lindsay <alindsay@codeaurora.org>]

Wei, Peter,

On Feb 10 18:07, Peter Maydell wrote:
> From: Wei Huang <wei@redhat.com>
> 
> This patch adds access support for PMINTENSET_EL1.
> 
> Signed-off-by: Wei Huang <wei@redhat.com>
> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
> Message-id: 1486504171-26807-4-git-send-email-wei@redhat.com
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
>  target/arm/cpu.h    |  2 +-
>  target/arm/helper.c | 10 +++++++++-
>  2 files changed, 10 insertions(+), 2 deletions(-)
> 
> diff --git a/target/arm/cpu.h b/target/arm/cpu.h
> index edc1f76..0956a54 100644
> --- a/target/arm/cpu.h
> +++ b/target/arm/cpu.h
> @@ -309,7 +309,7 @@ typedef struct CPUARMState {
>          uint32_t c9_pmovsr; /* perf monitor overflow status */
>          uint32_t c9_pmuserenr; /* perf monitor user enable */
>          uint64_t c9_pmselr; /* perf monitor counter selection register */
> -        uint32_t c9_pminten; /* perf monitor interrupt enables */
> +        uint64_t c9_pminten; /* perf monitor interrupt enables */

PMINTENSET_EL1 and PMINTENCLR_EL1 are both 32-bit registers, just like
their AArch32 counterparts. Is there a reason I'm missing for why this
has been changed to a uint64_t? There are a number of other 32-bit PMU
registers also currently being represented by uint64_t.

-Aaron

>          union { /* Memory attribute redirection */
>              struct {
>  #ifdef HOST_WORDS_BIGENDIAN
> diff --git a/target/arm/helper.c b/target/arm/helper.c
> index b837d36..5358ac6 100644
> --- a/target/arm/helper.c
> +++ b/target/arm/helper.c
> @@ -1275,9 +1275,17 @@ static const ARMCPRegInfo v7_cp_reginfo[] = {
>        .writefn = pmuserenr_write, .raw_writefn = raw_write },
>      { .name = "PMINTENSET", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 1,
>        .access = PL1_RW, .accessfn = access_tpm,
> -      .fieldoffset = offsetof(CPUARMState, cp15.c9_pminten),
> +      .type = ARM_CP_ALIAS,
> +      .fieldoffset = offsetoflow32(CPUARMState, cp15.c9_pminten),
>        .resetvalue = 0,
>        .writefn = pmintenset_write, .raw_writefn = raw_write },
> +    { .name = "PMINTENSET_EL1", .state = ARM_CP_STATE_AA64,
> +      .opc0 = 3, .opc1 = 0, .crn = 9, .crm = 14, .opc2 = 1,
> +      .access = PL1_RW, .accessfn = access_tpm,
> +      .type = ARM_CP_IO,
> +      .fieldoffset = offsetof(CPUARMState, cp15.c9_pminten),
> +      .writefn = pmintenset_write, .raw_writefn = raw_write,
> +      .resetvalue = 0x0 },
>      { .name = "PMINTENCLR", .cp = 15, .crn = 9, .crm = 14, .opc1 = 0, .opc2 = 2,
>        .access = PL1_RW, .accessfn = access_tpm, .type = ARM_CP_ALIAS,
>        .fieldoffset = offsetof(CPUARMState, cp15.c9_pminten),
> -- 
> 2.7.4
> 
> 

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