Re: [PATCH 2/9] ppc/pnv: Use address_space_stq_be() when triggering an interrupt from PSI

[David Gibson]

On Mon, Oct 07, 2019 at 10:40:55AM +0200, Cédric Le Goater wrote:
> Include the XIVE_TRIGGER_PQ bit in the trigger data which is how
> hardware signals to the IC that the PQ bits of the interrupt source
> have been checked.
> 
> Signed-off-by: Cédric Le Goater <address@hidden>

Applied to ppc-for-4.2, thanks.

> ---
>  hw/ppc/pnv_psi.c | 15 ++++++++++++---
>  1 file changed, 12 insertions(+), 3 deletions(-)
> 
> diff --git a/hw/ppc/pnv_psi.c b/hw/ppc/pnv_psi.c
> index a997f16bb4e6..68d0dfacfe2b 100644
> --- a/hw/ppc/pnv_psi.c
> +++ b/hw/ppc/pnv_psi.c
> @@ -660,10 +660,19 @@ static void pnv_psi_notify(XiveNotifier *xf, uint32_t 
> srcno)
>  
>      uint32_t offset =
>          (psi->regs[PSIHB_REG(PSIHB9_IVT_OFFSET)] >> PSIHB9_IVT_OFF_SHIFT);
> -    uint64_t lisn = cpu_to_be64(offset + srcno);
> +    uint64_t data = XIVE_TRIGGER_PQ | offset | srcno;
> +    MemTxResult result;
>  
> -    if (valid) {
> -        cpu_physical_memory_write(notify_addr, &lisn, sizeof(lisn));
> +    if (!valid) {
> +        return;
> +    }
> +
> +    address_space_stq_be(&address_space_memory, notify_addr, data,
> +                         MEMTXATTRS_UNSPECIFIED, &result);
> +    if (result != MEMTX_OK) {
> +        qemu_log_mask(LOG_GUEST_ERROR, "%s: trigger failed @%"
> +                      HWADDR_PRIx "\n", __func__, notif_port);
> +        return;
>      }
>  }
>  

-- 
David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!
http://www.ozlabs.org/~dgibson

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