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author | Anthony PERARD <anthony.perard@citrix.com> | 2010-07-16 14:55:39 +0100 |
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committer | Alexander Graf <agraf@suse.de> | 2011-05-08 10:10:00 +0200 |
commit | 4144530012793e6cd479eaa90cceb1aef0de8158 (patch) | |
tree | 03d74f1bff6a92cd502a1752aaf34780f268a44f /xen-all.c | |
parent | 1611977c3d8fdbdac6090cbd1f5555cee4aed6d9 (diff) | |
download | qemu-4144530012793e6cd479eaa90cceb1aef0de8158.zip qemu-4144530012793e6cd479eaa90cceb1aef0de8158.tar.gz qemu-4144530012793e6cd479eaa90cceb1aef0de8158.tar.bz2 |
piix_pci: Introduces Xen specific call for irq.
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>
Diffstat (limited to 'xen-all.c')
-rw-r--r-- | xen-all.c | 31 |
1 files changed, 31 insertions, 0 deletions
@@ -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) |