From 3cc1b9cba915c4adfa73d68e344677574a5a5267 Mon Sep 17 00:00:00 2001 From: Mark Cave-Ayland Date: Wed, 19 Sep 2018 18:21:00 +0100 Subject: lsi53c895a: add optional external IRQ via qdev MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On some early machines the on-board PCI devices IRQs are wired directly to the interrupt controller instead of via the PCI host bridge. Add an optional external IRQ that if wired up via qdev will replace the in-built PCI IRQ. Signed-off-by: Mark Cave-Ayland Reviewed-by: David Gibson Reviewed-by: Fam Zheng Reviewed-by: Hervé Poussineau Tested-by: Hervé Poussineau Signed-off-by: David Gibson --- hw/scsi/lsi53c895a.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/hw/scsi/lsi53c895a.c b/hw/scsi/lsi53c895a.c index f5cbbf653c..996b40650d 100644 --- a/hw/scsi/lsi53c895a.c +++ b/hw/scsi/lsi53c895a.c @@ -207,6 +207,7 @@ typedef struct { PCIDevice parent_obj; /*< public >*/ + qemu_irq ext_irq; MemoryRegion mmio_io; MemoryRegion ram_io; MemoryRegion io_io; @@ -443,9 +444,19 @@ static void lsi_stop_script(LSIState *s) s->istat1 &= ~LSI_ISTAT1_SRUN; } -static void lsi_update_irq(LSIState *s) +static void lsi_set_irq(LSIState *s, int level) { PCIDevice *d = PCI_DEVICE(s); + + if (s->ext_irq) { + qemu_set_irq(s->ext_irq, level); + } else { + pci_set_irq(d, level); + } +} + +static void lsi_update_irq(LSIState *s) +{ int level; static int last_level; lsi_request *p; @@ -477,7 +488,7 @@ static void lsi_update_irq(LSIState *s) level, s->dstat, s->sist1, s->sist0); last_level = level; } - pci_set_irq(d, level); + lsi_set_irq(s, level); if (!level && lsi_irq_on_rsl(s) && !(s->scntl1 & LSI_SCNTL1_CON)) { DPRINTF("Handled IRQs & disconnected, looking for pending " @@ -2213,6 +2224,7 @@ static void lsi_scsi_realize(PCIDevice *dev, Error **errp) "lsi-io", 256); address_space_init(&s->pci_io_as, pci_address_space_io(dev), "lsi-pci-io"); + qdev_init_gpio_out(d, &s->ext_irq, 1); pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io_io); pci_register_bar(dev, 1, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->mmio_io); -- cgit v1.2.3