[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [RFC PATCH V2 1/2] xen-pt: bind/unbind interrupt remapping
From: |
Lan Tianyu |
Subject: |
[Qemu-devel] [RFC PATCH V2 1/2] xen-pt: bind/unbind interrupt remapping format MSI |
Date: |
Thu, 18 May 2017 01:32:59 -0400 |
From: Chao Gao <address@hidden>
If a vIOMMU is exposed to guest, guest will configure the msi to remapping
format. The original code isn't suitable to the new format. A new pair
bind/unbind interfaces are added for this usage. This patch recognizes
this case and use new interfaces to bind/unbind msi.
Signed-off-by: Chao Gao <address@hidden>
Signed-off-by: Lan Tianyu <address@hidden>
---
hw/xen/xen_pt_msi.c | 50 ++++++++++++++++++++++++++++++++-----------
include/hw/i386/apic-msidef.h | 3 ++-
2 files changed, 39 insertions(+), 14 deletions(-)
diff --git a/hw/xen/xen_pt_msi.c b/hw/xen/xen_pt_msi.c
index 62add06..5fab95e 100644
--- a/hw/xen/xen_pt_msi.c
+++ b/hw/xen/xen_pt_msi.c
@@ -163,16 +163,24 @@ static int msi_msix_update(XenPCIPassthroughState *s,
int rc = 0;
uint64_t table_addr = 0;
- XEN_PT_LOG(d, "Updating MSI%s with pirq %d gvec %#x gflags %#x"
- " (entry: %#x)\n",
- is_msix ? "-X" : "", pirq, gvec, gflags, msix_entry);
-
if (is_msix) {
table_addr = s->msix->mmio_base_addr;
}
- rc = xc_domain_update_msi_irq(xen_xc, xen_domid, gvec,
- pirq, gflags, table_addr);
+ if (addr & MSI_ADDR_IF_MASK) {
+ XEN_PT_LOG(d, "Updating MSI%s with addr %#" PRIx64 "data %#x\n",
+ is_msix ? "-X": "", addr, data);
+ rc = xc_domain_update_msi_irq_remapping(xen_xc, xen_domid, pirq,
+ d->devfn, data, addr, table_addr);
+ }
+ else {
+ XEN_PT_LOG(d, "Updating MSI%s with pirq %d gvec %#x gflags %#x"
+ " (entry: %#x)\n",
+ is_msix ? "-X" : "", pirq, gvec, gflags, msix_entry);
+
+ rc = xc_domain_update_msi_irq(xen_xc, xen_domid, gvec,
+ pirq, gflags, table_addr);
+ }
if (rc) {
XEN_PT_ERR(d, "Updating of MSI%s failed. (err: %d)\n",
@@ -204,13 +212,29 @@ static int msi_msix_disable(XenPCIPassthroughState *s,
}
if (is_binded) {
- XEN_PT_LOG(d, "Unbind MSI%s with pirq %d, gvec %#x\n",
- is_msix ? "-X" : "", pirq, gvec);
- rc = xc_domain_unbind_msi_irq(xen_xc, xen_domid, gvec, pirq, gflags);
- if (rc) {
- XEN_PT_ERR(d, "Unbinding of MSI%s failed. (err: %d, pirq: %d,
gvec: %#x)\n",
- is_msix ? "-X" : "", errno, pirq, gvec);
- return rc;
+ if ( addr & MSI_ADDR_IF_MASK ) {
+ XEN_PT_LOG(d, "Unbinding of MSI%s . ( pirq: %d, data: %x, "
+ "addr: %#" PRIx64 ")\n",
+ is_msix ? "-X" : "", pirq, data, addr);
+ rc = xc_domain_unbind_msi_irq_remapping(xen_xc, xen_domid, pirq,
+ d->devfn, data, addr);
+ if (rc) {
+ XEN_PT_ERR(d, "Unbinding of MSI%s . (error: %d, pirq: %d, "
+ "data: %x, addr: %#" PRIx64 ")\n",
+ is_msix ? "-X" : "", rc, pirq, data, addr);
+ return rc;
+ }
+
+ } else {
+ XEN_PT_LOG(d, "Unbind MSI%s with pirq %d, gvec %#x\n",
+ is_msix ? "-X" : "", pirq, gvec);
+ rc = xc_domain_unbind_msi_irq(xen_xc, xen_domid, gvec, pirq,
gflags);
+ if (rc) {
+ XEN_PT_ERR(d, "Unbinding of MSI%s failed. (err: %d, pirq: %d, "
+ "gvec: %#x)\n",
+ is_msix ? "-X" : "", errno, pirq, gvec);
+ return rc;
+ }
}
}
diff --git a/include/hw/i386/apic-msidef.h b/include/hw/i386/apic-msidef.h
index 8b4d4cc..2c450f9 100644
--- a/include/hw/i386/apic-msidef.h
+++ b/include/hw/i386/apic-msidef.h
@@ -26,6 +26,7 @@
#define MSI_ADDR_DEST_ID_SHIFT 12
#define MSI_ADDR_DEST_IDX_SHIFT 4
-#define MSI_ADDR_DEST_ID_MASK 0x00ffff0
+#define MSI_ADDR_DEST_ID_MASK 0x000fff00
+#define MSI_ADDR_IF_MASK 0x00000010
#endif /* HW_APIC_MSIDEF_H */
--
1.8.3.1
Re: [Qemu-devel] [RFC PATCH V2 0/2] Qemu: Add Xen vIOMMU interrupt remapping function., no-reply, 2017/05/18