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piix_pci: Introduces Xen specific call for irq.

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This patch introduces Xen specific call in piix_pci.

The specific part for Xen is in write_config, set_irq and get_pirq.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Anthony PERARD 2010-07-16 14:55:39 +01:00 • committed by Alexander Graf
parent 1611977c3d
commit 4144530012
6 changed files with 102 additions and 4 deletions
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31
xen-all.c
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@ -6,9 +6,40 @@
*
*/
#include "hw/pci.h"
#include "hw/xen_common.h"
#include "hw/xen_backend.h"
/* Xen specific function for piix pci */
int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
{
return irq_num + ((pci_dev->devfn >> 3) << 2);
}
void xen_piix3_set_irq(void *opaque, int irq_num, int level)
{
xc_hvm_set_pci_intx_level(xen_xc, xen_domid, 0, 0, irq_num >> 2,
irq_num & 3, level);
}
void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len)
{
int i;
/* Scan for updates to PCI link routes (0x60-0x63). */
for (i = 0; i < len; i++) {
uint8_t v = (val >> (8 * i)) & 0xff;
if (v & 0x80) {
v = 0;
}
v &= 0xf;
if (((address + i) >= 0x60) && ((address + i) <= 0x63)) {
xc_hvm_set_pci_link_route(xen_xc, xen_domid, address + i - 0x60, v);
}
}
}
/* VCPU Operations, MMIO, IO ring ... */
static void xen_reset_vcpu(void *opaque)