1 files changed, 52 insertions, 0 deletions

diff --git a/meta/packages/qemu/files/qemu-pci-irq-sharing.patch b/meta/packages/qemu/files/qemu-pci-irq-sharing.patch
new file mode 100644
index 0000000000..c47e89895f
--- /dev/null
+++ b/meta/packages/qemu/files/qemu-pci-irq-sharing.patch
@@ -0,0 +1,52 @@
+diff -pNaur qemu-cvs-ts-orig/hw/pci.c qemu-cvs-ts/hw/pci.c
+--- qemu-cvs-ts-orig/hw/pci.c   2006-08-17 10:46:34.000000000 +0000
++++ qemu-cvs-ts/hw/pci.c        2006-09-23 17:02:41.000000000 +0000
+@@ -34,6 +34,7 @@ struct PCIBus {
+     SetIRQFunc *low_set_irq;
+     void *irq_opaque;
+     PCIDevice *devices[256];
++    int irq_count[4];
+ };
+ 
+ static void pci_update_mappings(PCIDevice *d);
+@@ -49,6 +50,7 @@ PCIBus *pci_register_bus(pci_set_irq_fn 
+     bus->set_irq = set_irq;
+     bus->irq_opaque = pic;
+     bus->devfn_min = devfn_min;
++    memset(bus->irq_count, 0, sizeof(bus->irq_count));
+     first_bus = bus;
+     return bus;
+ }
+@@ -100,6 +102,7 @@ PCIDevice *pci_register_device(PCIBus *b
+     pci_dev->bus = bus;
+     pci_dev->devfn = devfn;
+     pstrcpy(pci_dev->name, sizeof(pci_dev->name), name);
++    memset(pci_dev->irq_state, 0, sizeof(pci_dev->irq_state));
+ 
+     if (!config_read)
+         config_read = pci_default_read_config;
+@@ -404,7 +407,10 @@ uint32_t pci_data_read(void *opaque, uin
+ void pci_set_irq(PCIDevice *pci_dev, int irq_num, int level)
+ {
+     PCIBus *bus = pci_dev->bus;
+-    bus->set_irq(pci_dev, bus->irq_opaque, irq_num, level);
++    bus->irq_count[irq_num] += level - pci_dev->irq_state[irq_num];
++    pci_dev->irq_state[irq_num] = level;
++    bus->set_irq(pci_dev, bus->irq_opaque,
++                 irq_num, !!bus->irq_count[irq_num]);
+ }
+ 
+ /***********************************************************/
+diff -pNaur qemu-cvs-ts-orig/vl.h qemu-cvs-ts/vl.h
+--- qemu-cvs-ts-orig/vl.h       2006-09-18 01:15:29.000000000 +0000
++++ qemu-cvs-ts/vl.h    2006-09-23 17:15:21.000000000 +0000
+@@ -733,6 +733,9 @@ struct PCIDevice {
+     PCIConfigWriteFunc *config_write;
+     /* ??? This is a PC-specific hack, and should be removed.  */
+     int irq_index;
++
++    /* remember last irq levels */
++    int irq_state[4];
+ };
+ 
+ PCIDevice *pci_register_device(PCIBus *bus, const char *name,