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hw/misc/edu: support MSI interrupt

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So now edu device can support both line or msi interrupt, depending on
how user configures it.

Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <1475067819-21413-1-git-send-email-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peter Xu 2016-09-28 21:03:39 +08:00 • committed by Paolo Bonzini
parent 3cf294eebc
commit eabb5782f7
2 changed files with 22 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

18
hw/misc/edu.c
View file

@ -24,6 +24,7 @@
#include "qemu/osdep.h"
#include "hw/pci/pci.h"
#include "hw/pci/msi.h"
#include "qemu/timer.h"
#include "qemu/main-loop.h" /* iothread mutex */
#include "qapi/visitor.h"
@ -69,11 +70,20 @@ typedef struct {
uint64_t dma_mask;
} EduState;
static bool edu_msi_enabled(EduState *edu)
{
return msi_enabled(&edu->pdev);
}
static void edu_raise_irq(EduState *edu, uint32_t val)
{
edu->irq_status |= val;
if (edu->irq_status) {
pci_set_irq(&edu->pdev, 1);
if (edu_msi_enabled(edu)) {
msi_notify(&edu->pdev, 0);
} else {
pci_set_irq(&edu->pdev, 1);
}
}
}
@ -81,7 +91,7 @@ static void edu_lower_irq(EduState *edu, uint32_t val)
{
edu->irq_status &= ~val;
if (!edu->irq_status) {
if (!edu->irq_status && !edu_msi_enabled(edu)) {
pci_set_irq(&edu->pdev, 0);
}
}
@ -342,6 +352,10 @@ static void pci_edu_realize(PCIDevice *pdev, Error **errp)
pci_config_set_interrupt_pin(pci_conf, 1);
if (msi_init(pdev, 0, 1, true, false, errp)) {
return;
}
memory_region_init_io(&edu->mmio, OBJECT(edu), &edu_mmio_ops, edu,
"edu-mmio", 1 << 20);
pci_register_bar(pdev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &edu->mmio);