From d2cf28a0c6bcfba9d95e83ac628476e0f9cc178f Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Fri, 24 Sep 2021 08:38:06 +0100 Subject: nubus: add support for slot IRQs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Each Nubus slot has an IRQ line that can be used to request service from the CPU. Connect the IRQs to the Nubus bridge so that they can be wired up using qdev gpios accordingly, and introduce a new nubus_set_irq() function that can be used by Nubus devices to control the slot IRQ. Signed-off-by: Mark Cave-Ayland Reviewed-by: Laurent Vivier Reviewed-by: Philippe Mathieu-Daudé Message-Id: <20210924073808.1041-19-mark.cave-ayland@ilande.co.uk> Signed-off-by: Laurent Vivier --- include/hw/nubus/nubus.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include') diff --git a/include/hw/nubus/nubus.h b/include/hw/nubus/nubus.h index 63c69a7..b3b4d2e 100644 --- a/include/hw/nubus/nubus.h +++ b/include/hw/nubus/nubus.h @@ -26,6 +26,8 @@ #define NUBUS_LAST_SLOT 0xf #define NUBUS_SLOT_NB (NUBUS_LAST_SLOT - NUBUS_FIRST_SLOT + 1) +#define NUBUS_IRQS 16 + #define TYPE_NUBUS_DEVICE "nubus-device" OBJECT_DECLARE_SIMPLE_TYPE(NubusDevice, NUBUS_DEVICE) @@ -45,6 +47,8 @@ struct NubusBus { MemoryRegion slot_io; uint16_t slot_available_mask; + + qemu_irq irqs[NUBUS_IRQS]; }; #define NUBUS_DECL_ROM_MAX_SIZE (128 * KiB) @@ -60,6 +64,8 @@ struct NubusDevice { MemoryRegion decl_rom; }; +void nubus_set_irq(NubusDevice *nd, int level); + struct NubusBridge { SysBusDevice parent_obj; -- cgit v1.1