WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

[Xen-devel] [PATCH RFC V3 06/12] xen: add a 8259 Interrupt Controller

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 2cbc376..dd54063 100644
--- a/hw/xen_common.h
+++ b/hw/xen_common.h
@@ -52,4 +52,6 @@ typedef xc_interface *qemu_xc_interface;
 # define xc_fd(xen_xc)                          (*(int*)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 65fd44a..dfdff55 100644
--- a/hw/xen_machine_fv.c
+++ b/hw/xen_machine_fv.c
@@ -35,6 +35,7 @@
 
 #include "xen/hvm/hvm_info_table.h"
 #include "xen_platform.h"
+#include "xen_common.h"
 
 #define MAX_IDE_BUS 2
 
@@ -50,7 +51,6 @@ 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;
@@ -74,8 +74,7 @@ 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 948e439..765f87a 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -40,6 +40,18 @@ 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)
-- 
1.6.5


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

<Prev in Thread] Current Thread [Next in Thread>