[RTEMS 5 PATCH v2] powerpc/shared: ISA bus bridge fails to enable the openpic irq

[Joel Sherrill]

Does this have a ticket for the 5 branch? :)

Patch is ok otherwise.

On Sun, Feb 7, 2021, 4:45 PM <chrisj at rtems.org> wrote:

> From: Chris Johns <chrisj at rtems.org>
>
> - The call to enable the openpic irq for the ISA bridge fails
>   because the IRQ used is offset by the ISA bus signals and
>   the openpic call expects an IRQ relative to its signals.
>
> - Add the MVME 2600/2700 to the list of boards with an ISA bridge.
>
> Closes #4233
> ---
>  bsps/powerpc/shared/irq/irq_init.c          | 2 +-
>  bsps/powerpc/shared/irq/openpic_i8259_irq.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/bsps/powerpc/shared/irq/irq_init.c
> b/bsps/powerpc/shared/irq/irq_init.c
> index 1a44992a5b..1042c9d1a8 100644
> --- a/bsps/powerpc/shared/irq/irq_init.c
> +++ b/bsps/powerpc/shared/irq/irq_init.c
> @@ -310,7 +310,7 @@ void BSP_rtems_irq_mng_init(unsigned cpuId)
>  #endif
>      known_cpi_isa_bridge = 1;
>    }
> -  if ( currentBoard == MVME_2300 ) {
> +  if ( currentBoard == MVME_2300 || currentBoard ==
> MVME_2600_2700_W_MVME761 ) {
>      /* nothing to do for W83C553 bridge */
>      known_cpi_isa_bridge = 1;
>    }
> diff --git a/bsps/powerpc/shared/irq/openpic_i8259_irq.c
> b/bsps/powerpc/shared/irq/openpic_i8259_irq.c
> index 4a9c393f7f..513b9ac3e0 100644
> --- a/bsps/powerpc/shared/irq/openpic_i8259_irq.c
> +++ b/bsps/powerpc/shared/irq/openpic_i8259_irq.c
> @@ -214,7 +214,7 @@ int BSP_setup_the_pic(rtems_irq_global_settings*
> config)
>         /*
>       * Must enable PCI/ISA bridge IRQ
>       */
> -       openpic_enable_irq (BSP_PCI_ISA_BRIDGE_IRQ);
> +    openpic_enable_irq (BSP_PCI_ISA_BRIDGE_IRQ -
> BSP_PCI_IRQ_LOWEST_OFFSET);
>  #endif
>  #endif
>
> --
> 2.24.1
>
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