From: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Introduce a 8259 Interrupt Controller for target-xen; every set_irq
call makes a Xen hypercall.
Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
---
hw/xen_common.h | 2 ++
hw/xen_machine_fv.c | 5 ++---
xen-all.c | 12 ++++++++++++
3 files changed, 16 insertions(+), 3 deletions(-)
diff --git a/hw/xen_common.h b/hw/xen_common.h
index b98d107..0cc935a 100644
--- a/hw/xen_common.h
+++ b/hw/xen_common.h
@@ -42,4 +42,6 @@ static inline int xc_fd(xc_interface *xen_xc)
}
#endif
+qemu_irq *i8259_xen_init(void);
+
#endif /* QEMU_HW_XEN_COMMON_H */
diff --git a/hw/xen_machine_fv.c b/hw/xen_machine_fv.c
index 2f51625..0a90312 100644
--- a/hw/xen_machine_fv.c
+++ b/hw/xen_machine_fv.c
@@ -37,6 +37,7 @@
#include "xen_common.h"
#include "xen/hvm/hvm_info_table.h"
#include "xen_platform.h"
+#include "xen_common.h"
#define MAX_IDE_BUS 2
@@ -52,7 +53,6 @@ static void xen_init_fv(ram_addr_t ram_size,
PCIBus *pci_bus;
PCII440FXState *i440fx_state;
int piix3_devfn = -1;
- qemu_irq *cpu_irq;
qemu_irq *isa_irq;
qemu_irq *i8259;
qemu_irq *cmos_s3;
@@ -76,8 +76,7 @@ static void xen_init_fv(ram_addr_t ram_size,
env = cpu_init(cpu_model);
env->halted = 1;
- cpu_irq = pc_allocate_cpu_irq();
- i8259 = i8259_init(cpu_irq[0]);
+ i8259 = i8259_xen_init();
isa_irq_state = qemu_mallocz(sizeof (*isa_irq_state));
isa_irq_state->i8259 = i8259;
diff --git a/xen-all.c b/xen-all.c
index 8a51873..205cbc4 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -43,6 +43,18 @@ void xen_piix_pci_write_config_client(uint32_t address,
uint32_t val, int len)
}
}
+/* i8259 */
+
+static void i8259_set_irq(void *opaque, int irq, int level)
+{
+ xc_hvm_set_isa_irq_level(xen_xc, xen_domid, irq, level);
+}
+
+qemu_irq *i8259_xen_init(void)
+{
+ return qemu_allocate_irqs(i8259_set_irq, NULL, 16);
+}
+
/* Initialise Xen */
int xen_init(int smp_cpus)
--
1.7.1
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