# HG changeset patch
# User Jan Beulich <jbeulich@xxxxxxxx>
# Date 1316712414 -3600
# Node ID ec7c81fbe0de9b18f38bf2592a9e44d0992821c9
# Parent a422e2a4451e16dc791b293f41966b842fa4781d
PCI multi-seg: adjust domctl interface
Again, a couple of directly related functions at once get adjusted to
account for the segment number.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
---
diff -r a422e2a4451e -r ec7c81fbe0de tools/libxc/xc_domain.c
--- a/tools/libxc/xc_domain.c Sun Sep 18 00:26:52 2011 +0100
+++ b/tools/libxc/xc_domain.c Thu Sep 22 18:26:54 2011 +0100
@@ -1132,13 +1132,13 @@
int xc_assign_device(
xc_interface *xch,
uint32_t domid,
- uint32_t machine_bdf)
+ uint32_t machine_sbdf)
{
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_assign_device;
domctl.domain = domid;
- domctl.u.assign_device.machine_bdf = machine_bdf;
+ domctl.u.assign_device.machine_sbdf = machine_sbdf;
return do_domctl(xch, &domctl);
}
@@ -1146,7 +1146,7 @@
int xc_get_device_group(
xc_interface *xch,
uint32_t domid,
- uint32_t machine_bdf,
+ uint32_t machine_sbdf,
uint32_t max_sdevs,
uint32_t *num_sdevs,
uint32_t *sdev_array)
@@ -1164,7 +1164,7 @@
domctl.cmd = XEN_DOMCTL_get_device_group;
domctl.domain = (domid_t)domid;
- domctl.u.get_device_group.machine_bdf = machine_bdf;
+ domctl.u.get_device_group.machine_sbdf = machine_sbdf;
domctl.u.get_device_group.max_sdevs = max_sdevs;
set_xen_guest_handle(domctl.u.get_device_group.sdev_array, sdev_array);
@@ -1181,13 +1181,13 @@
int xc_test_assign_device(
xc_interface *xch,
uint32_t domid,
- uint32_t machine_bdf)
+ uint32_t machine_sbdf)
{
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_test_assign_device;
domctl.domain = domid;
- domctl.u.assign_device.machine_bdf = machine_bdf;
+ domctl.u.assign_device.machine_sbdf = machine_sbdf;
return do_domctl(xch, &domctl);
}
@@ -1195,13 +1195,13 @@
int xc_deassign_device(
xc_interface *xch,
uint32_t domid,
- uint32_t machine_bdf)
+ uint32_t machine_sbdf)
{
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_deassign_device;
domctl.domain = domid;
- domctl.u.assign_device.machine_bdf = machine_bdf;
+ domctl.u.assign_device.machine_sbdf = machine_sbdf;
return do_domctl(xch, &domctl);
}
diff -r a422e2a4451e -r ec7c81fbe0de tools/libxl/libxl_pci.c
--- a/tools/libxl/libxl_pci.c Sun Sep 18 00:26:52 2011 +0100
+++ b/tools/libxl/libxl_pci.c Thu Sep 22 18:26:54 2011 +0100
@@ -45,10 +45,10 @@
{
unsigned int value;
- value = 0;
- value |= (pcidev->bus & 0xff) << 16;
- value |= (pcidev->dev & 0x1f) << (8+3);
- value |= (pcidev->func & 0x7) << (8+0);
+ value = pcidev->domain << 16;
+ value |= (pcidev->bus & 0xff) << 8;
+ value |= (pcidev->dev & 0x1f) << 3;
+ value |= (pcidev->func & 0x7);
return value;
}
diff -r a422e2a4451e -r ec7c81fbe0de tools/python/xen/lowlevel/xc/xc.c
--- a/tools/python/xen/lowlevel/xc/xc.c Sun Sep 18 00:26:52 2011 +0100
+++ b/tools/python/xen/lowlevel/xc/xc.c Thu Sep 22 18:26:54 2011 +0100
@@ -609,7 +609,7 @@
{
uint32_t dom;
char *pci_str;
- int32_t bdf = 0;
+ int32_t sbdf = 0;
int seg, bus, dev, func;
static char *kwd_list[] = { "domid", "pci", NULL };
@@ -619,20 +619,21 @@
while ( next_bdf(&pci_str, &seg, &bus, &dev, &func) )
{
- bdf |= (bus & 0xff) << 16;
- bdf |= (dev & 0x1f) << 11;
- bdf |= (func & 0x7) << 8;
-
- if ( xc_test_assign_device(self->xc_handle, dom, bdf) != 0 )
+ sbdf = seg << 16;
+ sbdf |= (bus & 0xff) << 8;
+ sbdf |= (dev & 0x1f) << 3;
+ sbdf |= (func & 0x7);
+
+ if ( xc_test_assign_device(self->xc_handle, dom, sbdf) != 0 )
{
if (errno == ENOSYS)
- bdf = -1;
+ sbdf = -1;
break;
}
- bdf = 0;
+ sbdf = 0;
}
- return Py_BuildValue("i", bdf);
+ return Py_BuildValue("i", sbdf);
}
static PyObject *pyxc_assign_device(XcObject *self,
@@ -641,7 +642,7 @@
{
uint32_t dom;
char *pci_str;
- int32_t bdf = 0;
+ int32_t sbdf = 0;
int seg, bus, dev, func;
static char *kwd_list[] = { "domid", "pci", NULL };
@@ -651,20 +652,21 @@
while ( next_bdf(&pci_str, &seg, &bus, &dev, &func) )
{
- bdf |= (bus & 0xff) << 16;
- bdf |= (dev & 0x1f) << 11;
- bdf |= (func & 0x7) << 8;
-
- if ( xc_assign_device(self->xc_handle, dom, bdf) != 0 )
+ sbdf = seg << 16;
+ sbdf |= (bus & 0xff) << 8;
+ sbdf |= (dev & 0x1f) << 3;
+ sbdf |= (func & 0x7);
+
+ if ( xc_assign_device(self->xc_handle, dom, sbdf) != 0 )
{
if (errno == ENOSYS)
- bdf = -1;
+ sbdf = -1;
break;
}
- bdf = 0;
+ sbdf = 0;
}
- return Py_BuildValue("i", bdf);
+ return Py_BuildValue("i", sbdf);
}
static PyObject *pyxc_deassign_device(XcObject *self,
@@ -673,7 +675,7 @@
{
uint32_t dom;
char *pci_str;
- int32_t bdf = 0;
+ int32_t sbdf = 0;
int seg, bus, dev, func;
static char *kwd_list[] = { "domid", "pci", NULL };
@@ -683,26 +685,27 @@
while ( next_bdf(&pci_str, &seg, &bus, &dev, &func) )
{
- bdf |= (bus & 0xff) << 16;
- bdf |= (dev & 0x1f) << 11;
- bdf |= (func & 0x7) << 8;
-
- if ( xc_deassign_device(self->xc_handle, dom, bdf) != 0 )
+ sbdf = seg << 16;
+ sbdf |= (bus & 0xff) << 8;
+ sbdf |= (dev & 0x1f) << 3;
+ sbdf |= (func & 0x7);
+
+ if ( xc_deassign_device(self->xc_handle, dom, sbdf) != 0 )
{
if (errno == ENOSYS)
- bdf = -1;
+ sbdf = -1;
break;
}
- bdf = 0;
+ sbdf = 0;
}
- return Py_BuildValue("i", bdf);
+ return Py_BuildValue("i", sbdf);
}
static PyObject *pyxc_get_device_group(XcObject *self,
PyObject *args)
{
- uint32_t bdf = 0;
+ uint32_t sbdf;
uint32_t max_sdevs, num_sdevs;
int domid, seg, bus, dev, func, rc, i;
PyObject *Pystr;
@@ -720,12 +723,13 @@
if (sdev_array == NULL)
return PyErr_NoMemory();
- bdf |= (bus & 0xff) << 16;
- bdf |= (dev & 0x1f) << 11;
- bdf |= (func & 0x7) << 8;
+ sbdf = seg << 16;
+ sbdf |= (bus & 0xff) << 8;
+ sbdf |= (dev & 0x1f) << 3;
+ sbdf |= (func & 0x7);
rc = xc_get_device_group(self->xc_handle,
- domid, bdf, max_sdevs, &num_sdevs, sdev_array);
+ domid, sbdf, max_sdevs, &num_sdevs, sdev_array);
if ( rc < 0 )
{
diff -r a422e2a4451e -r ec7c81fbe0de xen/arch/ia64/xen/dom0_ops.c
--- a/xen/arch/ia64/xen/dom0_ops.c Sun Sep 18 00:26:52 2011 +0100
+++ b/xen/arch/ia64/xen/dom0_ops.c Thu Sep 22 18:26:54 2011 +0100
@@ -258,138 +258,6 @@
}
break;
- case XEN_DOMCTL_get_device_group:
- {
- struct domain *d;
- u32 max_sdevs;
- u8 bus, devfn;
- XEN_GUEST_HANDLE_64(uint32) sdevs;
- int num_sdevs;
-
- ret = -ENOSYS;
- if ( !iommu_enabled )
- break;
-
- ret = -EINVAL;
- if ( (d = rcu_lock_domain_by_id(op->domain)) == NULL )
- break;
-
- bus = (op->u.get_device_group.machine_bdf >> 16) & 0xff;
- devfn = (op->u.get_device_group.machine_bdf >> 8) & 0xff;
- max_sdevs = op->u.get_device_group.max_sdevs;
- sdevs = op->u.get_device_group.sdev_array;
-
- num_sdevs = iommu_get_device_group(d, bus, devfn, sdevs, max_sdevs);
- if ( num_sdevs < 0 )
- {
- dprintk(XENLOG_ERR, "iommu_get_device_group() failed!\n");
- ret = -EFAULT;
- op->u.get_device_group.num_sdevs = 0;
- }
- else
- {
- ret = 0;
- op->u.get_device_group.num_sdevs = num_sdevs;
- }
- if ( copy_to_guest(u_domctl, op, 1) )
- ret = -EFAULT;
- rcu_unlock_domain(d);
- }
- break;
-
- case XEN_DOMCTL_test_assign_device:
- {
- u8 bus, devfn;
-
- ret = -ENOSYS;
- if ( !iommu_enabled )
- break;
-
- ret = -EINVAL;
- bus = (op->u.assign_device.machine_bdf >> 16) & 0xff;
- devfn = (op->u.assign_device.machine_bdf >> 8) & 0xff;
-
- if ( device_assigned(bus, devfn) )
- {
- printk( "XEN_DOMCTL_test_assign_device: "
- "%x:%x.%x already assigned, or non-existent\n",
- bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
- break;
- }
- ret = 0;
- }
- break;
-
- case XEN_DOMCTL_assign_device:
- {
- struct domain *d;
- u8 bus, devfn;
-
- ret = -ENOSYS;
- if ( !iommu_enabled )
- break;
-
- ret = -EINVAL;
- if ( unlikely((d = get_domain_by_id(op->domain)) == NULL) )
- {
- gdprintk(XENLOG_ERR,
- "XEN_DOMCTL_assign_device: get_domain_by_id() failed\n");
- break;
- }
- bus = (op->u.assign_device.machine_bdf >> 16) & 0xff;
- devfn = (op->u.assign_device.machine_bdf >> 8) & 0xff;
-
- if ( device_assigned(bus, devfn) )
- {
- gdprintk(XENLOG_ERR, "XEN_DOMCTL_assign_device: "
- "%x:%x.%x already assigned, or non-existent\n",
- bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
- break;
- }
-
- ret = assign_device(d, bus, devfn);
- if ( ret )
- gdprintk(XENLOG_ERR, "XEN_DOMCTL_assign_device: "
- "assign device (%x:%x.%x) failed\n",
- bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
- put_domain(d);
- }
- break;
-
- case XEN_DOMCTL_deassign_device:
- {
- struct domain *d;
- u8 bus, devfn;
-
- ret = -ENOSYS;
- if ( !iommu_enabled )
- break;
-
- ret = -EINVAL;
- if ( unlikely((d = get_domain_by_id(op->domain)) == NULL) )
- {
- gdprintk(XENLOG_ERR,
- "XEN_DOMCTL_deassign_device: get_domain_by_id() failed\n");
- break;
- }
- bus = (op->u.assign_device.machine_bdf >> 16) & 0xff;
- devfn = (op->u.assign_device.machine_bdf >> 8) & 0xff;
-
- if ( !device_assigned(bus, devfn) )
- break;
-
- spin_lock(&pcidevs_lock);
- ret = deassign_device(d, bus, devfn);
- spin_unlock(&pcidevs_lock);
- if ( ret )
- gdprintk(XENLOG_ERR, "XEN_DOMCTL_deassign_device: "
- "deassign device (%x:%x.%x) failed\n",
- bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
-
- put_domain(d);
- }
- break;
-
case XEN_DOMCTL_bind_pt_irq:
{
struct domain * d;
@@ -707,8 +575,8 @@
break;
default:
- printk("arch_do_domctl: unrecognized domctl: %d!!!\n",op->cmd);
- ret = -ENOSYS;
+ ret = iommu_do_domctl(op, u_domctl);
+ break;
}
diff -r a422e2a4451e -r ec7c81fbe0de xen/arch/x86/domctl.c
--- a/xen/arch/x86/domctl.c Sun Sep 18 00:26:52 2011 +0100
+++ b/xen/arch/x86/domctl.c Thu Sep 22 18:26:54 2011 +0100
@@ -742,144 +742,6 @@
}
break;
- case XEN_DOMCTL_get_device_group:
- {
- struct domain *d;
- u32 max_sdevs;
- u8 bus, devfn;
- XEN_GUEST_HANDLE_64(uint32) sdevs;
- int num_sdevs;
-
- ret = -ENOSYS;
- if ( !iommu_enabled )
- break;
-
- ret = -EINVAL;
- if ( (d = rcu_lock_domain_by_id(domctl->domain)) == NULL )
- break;
-
- bus = (domctl->u.get_device_group.machine_bdf >> 16) & 0xff;
- devfn = (domctl->u.get_device_group.machine_bdf >> 8) & 0xff;
- max_sdevs = domctl->u.get_device_group.max_sdevs;
- sdevs = domctl->u.get_device_group.sdev_array;
-
- num_sdevs = iommu_get_device_group(d, bus, devfn, sdevs, max_sdevs);
- if ( num_sdevs < 0 )
- {
- dprintk(XENLOG_ERR, "iommu_get_device_group() failed!\n");
- ret = -EFAULT;
- domctl->u.get_device_group.num_sdevs = 0;
- }
- else
- {
- ret = 0;
- domctl->u.get_device_group.num_sdevs = num_sdevs;
- }
- if ( copy_to_guest(u_domctl, domctl, 1) )
- ret = -EFAULT;
- rcu_unlock_domain(d);
- }
- break;
-
- case XEN_DOMCTL_test_assign_device:
- {
- u8 bus, devfn;
-
- ret = -ENOSYS;
- if ( !iommu_enabled )
- break;
-
- ret = xsm_test_assign_device(domctl->u.assign_device.machine_bdf);
- if ( ret )
- break;
-
- ret = -EINVAL;
- bus = (domctl->u.assign_device.machine_bdf >> 16) & 0xff;
- devfn = (domctl->u.assign_device.machine_bdf >> 8) & 0xff;
-
- if ( device_assigned(bus, devfn) )
- {
- gdprintk(XENLOG_ERR, "XEN_DOMCTL_test_assign_device: "
- "%x:%x.%x already assigned, or non-existent\n",
- bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
- break;
- }
- ret = 0;
- }
- break;
-
- case XEN_DOMCTL_assign_device:
- {
- struct domain *d;
- u8 bus, devfn;
-
- ret = -ENOSYS;
- if ( !iommu_enabled )
- break;
-
- ret = -EINVAL;
- if ( unlikely((d = get_domain_by_id(domctl->domain)) == NULL) )
- {
- gdprintk(XENLOG_ERR,
- "XEN_DOMCTL_assign_device: get_domain_by_id() failed\n");
- break;
- }
-
- ret = xsm_assign_device(d, domctl->u.assign_device.machine_bdf);
- if ( ret )
- goto assign_device_out;
-
- bus = (domctl->u.assign_device.machine_bdf >> 16) & 0xff;
- devfn = (domctl->u.assign_device.machine_bdf >> 8) & 0xff;
-
- ret = assign_device(d, bus, devfn);
- if ( ret )
- gdprintk(XENLOG_ERR, "XEN_DOMCTL_assign_device: "
- "assign device (%x:%x.%x) failed\n",
- bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
-
- assign_device_out:
- put_domain(d);
- }
- break;
-
- case XEN_DOMCTL_deassign_device:
- {
- struct domain *d;
- u8 bus, devfn;
-
- ret = -ENOSYS;
- if ( !iommu_enabled )
- break;
-
- ret = -EINVAL;
- if ( unlikely((d = get_domain_by_id(domctl->domain)) == NULL) )
- {
- gdprintk(XENLOG_ERR,
- "XEN_DOMCTL_deassign_device: get_domain_by_id() failed\n");
- break;
- }
-
- ret = xsm_assign_device(d, domctl->u.assign_device.machine_bdf);
- if ( ret )
- goto deassign_device_out;
-
- bus = (domctl->u.assign_device.machine_bdf >> 16) & 0xff;
- devfn = (domctl->u.assign_device.machine_bdf >> 8) & 0xff;
-
- spin_lock(&pcidevs_lock);
- ret = deassign_device(d, bus, devfn);
- spin_unlock(&pcidevs_lock);
- if ( ret )
- gdprintk(XENLOG_ERR, "XEN_DOMCTL_deassign_device: "
- "deassign device (%x:%x.%x) failed\n",
- bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
-
- deassign_device_out:
- put_domain(d);
- }
- break;
-
case XEN_DOMCTL_bind_pt_irq:
{
struct domain * d;
@@ -1601,7 +1463,7 @@
break;
default:
- ret = -ENOSYS;
+ ret = iommu_do_domctl(domctl, u_domctl);
break;
}
diff -r a422e2a4451e -r ec7c81fbe0de xen/drivers/passthrough/amd/pci_amd_iommu.c
--- a/xen/drivers/passthrough/amd/pci_amd_iommu.c Sun Sep 18 00:26:52
2011 +0100
+++ b/xen/drivers/passthrough/amd/pci_amd_iommu.c Thu Sep 22 18:26:54
2011 +0100
@@ -305,7 +305,7 @@
}
static int reassign_device( struct domain *source, struct domain *target,
- u8 bus, u8 devfn)
+ u16 seg, u8 bus, u8 devfn)
{
struct pci_dev *pdev;
struct amd_iommu *iommu;
@@ -313,7 +313,7 @@
struct hvm_iommu *t = domain_hvm_iommu(target);
ASSERT(spin_is_locked(&pcidevs_lock));
- pdev = pci_get_pdev_by_domain(source, 0, bus, devfn);
+ pdev = pci_get_pdev_by_domain(source, seg, bus, devfn);
if ( !pdev )
return -ENODEV;
@@ -346,7 +346,7 @@
return 0;
}
-static int amd_iommu_assign_device(struct domain *d, u8 bus, u8 devfn)
+static int amd_iommu_assign_device(struct domain *d, u16 seg, u8 bus, u8 devfn)
{
int bdf = (bus << 8) | devfn;
int req_id = get_dma_requestor_id(bdf);
@@ -361,7 +361,7 @@
ivrs_mappings[req_id].read_permission);
}
- return reassign_device(dom0, d, bus, devfn);
+ return reassign_device(dom0, d, seg, bus, devfn);
}
static void deallocate_next_page_table(struct page_info* pg, int level)
@@ -426,9 +426,9 @@
}
static int amd_iommu_return_device(
- struct domain *s, struct domain *t, u8 bus, u8 devfn)
+ struct domain *s, struct domain *t, u16 seg, u8 bus, u8 devfn)
{
- return reassign_device(s, t, bus, devfn);
+ return reassign_device(s, t, seg, bus, devfn);
}
static int amd_iommu_add_device(struct pci_dev *pdev)
@@ -475,7 +475,7 @@
return 0;
}
-static int amd_iommu_group_id(u8 bus, u8 devfn)
+static int amd_iommu_group_id(u16 seg, u8 bus, u8 devfn)
{
int rt;
int bdf = (bus << 8) | devfn;
diff -r a422e2a4451e -r ec7c81fbe0de xen/drivers/passthrough/iommu.c
--- a/xen/drivers/passthrough/iommu.c Sun Sep 18 00:26:52 2011 +0100
+++ b/xen/drivers/passthrough/iommu.c Thu Sep 22 18:26:54 2011 +0100
@@ -19,6 +19,7 @@
#include <xen/paging.h>
#include <xen/guest_access.h>
#include <xen/softirq.h>
+#include <xsm/xsm.h>
static void parse_iommu_param(char *s);
static int iommu_populate_page_table(struct domain *d);
@@ -165,7 +166,22 @@
return hd->platform_ops->remove_device(pdev);
}
-int assign_device(struct domain *d, u8 bus, u8 devfn)
+/*
+ * If the device isn't owned by dom0, it means it already
+ * has been assigned to other domain, or it doesn't exist.
+ */
+static int device_assigned(u16 seg, u8 bus, u8 devfn)
+{
+ struct pci_dev *pdev;
+
+ spin_lock(&pcidevs_lock);
+ pdev = pci_get_pdev_by_domain(dom0, seg, bus, devfn);
+ spin_unlock(&pcidevs_lock);
+
+ return pdev ? 0 : -1;
+}
+
+static int assign_device(struct domain *d, u16 seg, u8 bus, u8 devfn)
{
struct hvm_iommu *hd = domain_hvm_iommu(d);
int rc = 0;
@@ -174,7 +190,7 @@
return 0;
spin_lock(&pcidevs_lock);
- if ( (rc = hd->platform_ops->assign_device(d, bus, devfn)) )
+ if ( (rc = hd->platform_ops->assign_device(d, seg, bus, devfn)) )
goto done;
if ( has_arch_pdevs(d) && !need_iommu(d) )
@@ -272,7 +288,7 @@
}
/* caller should hold the pcidevs_lock */
-int deassign_device(struct domain *d, u8 bus, u8 devfn)
+int deassign_device(struct domain *d, u16 seg, u8 bus, u8 devfn)
{
struct hvm_iommu *hd = domain_hvm_iommu(d);
struct pci_dev *pdev = NULL;
@@ -282,7 +298,7 @@
return -EINVAL;
ASSERT(spin_is_locked(&pcidevs_lock));
- pdev = pci_get_pdev(0, bus, devfn);
+ pdev = pci_get_pdev(seg, bus, devfn);
if ( !pdev )
return -ENODEV;
@@ -293,12 +309,12 @@
return -EINVAL;
}
- ret = hd->platform_ops->reassign_device(d, dom0, bus, devfn);
+ ret = hd->platform_ops->reassign_device(d, dom0, seg, bus, devfn);
if ( ret )
{
dprintk(XENLOG_ERR VTDPREFIX,
- "d%d: Deassign device (%x:%x.%x) failed!\n",
- d->domain_id, bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
+ "d%d: Deassign device (%04x:%02x:%02x.%u) failed!\n",
+ d->domain_id, seg, bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
return ret;
}
@@ -347,7 +363,8 @@
return rc;
}
-int iommu_get_device_group(struct domain *d, u8 bus, u8 devfn,
+static int iommu_get_device_group(
+ struct domain *d, u16 seg, u8 bus, u8 devfn,
XEN_GUEST_HANDLE_64(uint32) buf, int max_sdevs)
{
struct hvm_iommu *hd = domain_hvm_iommu(d);
@@ -360,15 +377,16 @@
if ( !iommu_enabled || !ops || !ops->get_device_group_id )
return 0;
- group_id = ops->get_device_group_id(bus, devfn);
+ group_id = ops->get_device_group_id(seg, bus, devfn);
spin_lock(&pcidevs_lock);
for_each_pdev( d, pdev )
{
- if ( (pdev->bus == bus) && (pdev->devfn == devfn) )
+ if ( (pdev->seg != seg) ||
+ ((pdev->bus == bus) && (pdev->devfn == devfn)) )
continue;
- sdev_id = ops->get_device_group_id(pdev->bus, pdev->devfn);
+ sdev_id = ops->get_device_group_id(seg, pdev->bus, pdev->devfn);
if ( (sdev_id == group_id) && (i < max_sdevs) )
{
bdf = 0;
@@ -443,6 +461,154 @@
iommu_enabled = 0;
}
+int iommu_do_domctl(
+ struct xen_domctl *domctl,
+ XEN_GUEST_HANDLE(xen_domctl_t) u_domctl)
+{
+ struct domain *d;
+ u16 seg;
+ u8 bus, devfn;
+ int ret = 0;
+
+ if ( !iommu_enabled )
+ return -ENOSYS;
+
+ switch ( domctl->cmd )
+ {
+ case XEN_DOMCTL_get_device_group:
+ {
+ u32 max_sdevs;
+ XEN_GUEST_HANDLE_64(uint32) sdevs;
+
+ ret = -EINVAL;
+ if ( (d = rcu_lock_domain_by_id(domctl->domain)) == NULL )
+ break;
+
+ seg = domctl->u.get_device_group.machine_sbdf >> 16;
+ bus = (domctl->u.get_device_group.machine_sbdf >> 8) & 0xff;
+ devfn = domctl->u.get_device_group.machine_sbdf & 0xff;
+ max_sdevs = domctl->u.get_device_group.max_sdevs;
+ sdevs = domctl->u.get_device_group.sdev_array;
+
+ ret = iommu_get_device_group(d, seg, bus, devfn, sdevs, max_sdevs);
+ if ( ret < 0 )
+ {
+ dprintk(XENLOG_ERR, "iommu_get_device_group() failed!\n");
+ ret = -EFAULT;
+ domctl->u.get_device_group.num_sdevs = 0;
+ }
+ else
+ {
+ domctl->u.get_device_group.num_sdevs = ret;
+ ret = 0;
+ }
+ if ( copy_to_guest(u_domctl, domctl, 1) )
+ ret = -EFAULT;
+ rcu_unlock_domain(d);
+ }
+ break;
+
+ case XEN_DOMCTL_test_assign_device:
+ ret = xsm_test_assign_device(domctl->u.assign_device.machine_sbdf);
+ if ( ret )
+ break;
+
+ seg = domctl->u.get_device_group.machine_sbdf >> 16;
+ bus = (domctl->u.assign_device.machine_sbdf >> 8) & 0xff;
+ devfn = domctl->u.assign_device.machine_sbdf & 0xff;
+
+ if ( device_assigned(seg, bus, devfn) )
+ {
+ gdprintk(XENLOG_ERR, "XEN_DOMCTL_test_assign_device: "
+ "%04x:%02x:%02x.%u already assigned, or non-existent\n",
+ seg, bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
+ ret = -EINVAL;
+ }
+ break;
+
+ case XEN_DOMCTL_assign_device:
+ if ( unlikely((d = get_domain_by_id(domctl->domain)) == NULL) )
+ {
+ gdprintk(XENLOG_ERR,
+ "XEN_DOMCTL_assign_device: get_domain_by_id() failed\n");
+ ret = -EINVAL;
+ break;
+ }
+
+ ret = xsm_assign_device(d, domctl->u.assign_device.machine_sbdf);
+ if ( ret )
+ goto assign_device_out;
+
+ seg = domctl->u.get_device_group.machine_sbdf >> 16;
+ bus = (domctl->u.assign_device.machine_sbdf >> 8) & 0xff;
+ devfn = domctl->u.assign_device.machine_sbdf & 0xff;
+
+#ifdef __ia64__ /* XXX Is this really needed? */
+ if ( device_assigned(seg, bus, devfn) )
+ {
+ gdprintk(XENLOG_ERR, "XEN_DOMCTL_assign_device: "
+ "%x:%x.%x already assigned, or non-existent\n",
+ bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
+ ret = -EINVAL;
+ goto assign_device_out;
+ }
+#endif
+
+ ret = assign_device(d, seg, bus, devfn);
+ if ( ret )
+ gdprintk(XENLOG_ERR, "XEN_DOMCTL_assign_device: "
+ "assign device (%04x:%02x:%02x.%u) failed\n",
+ seg, bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
+
+ assign_device_out:
+ put_domain(d);
+ break;
+
+ case XEN_DOMCTL_deassign_device:
+ if ( unlikely((d = get_domain_by_id(domctl->domain)) == NULL) )
+ {
+ gdprintk(XENLOG_ERR,
+ "XEN_DOMCTL_deassign_device: get_domain_by_id() failed\n");
+ ret = -EINVAL;
+ break;
+ }
+
+ ret = xsm_assign_device(d, domctl->u.assign_device.machine_sbdf);
+ if ( ret )
+ goto deassign_device_out;
+
+ seg = domctl->u.get_device_group.machine_sbdf >> 16;
+ bus = (domctl->u.assign_device.machine_sbdf >> 8) & 0xff;
+ devfn = domctl->u.assign_device.machine_sbdf & 0xff;
+
+#ifdef __ia64__ /* XXX Is this really needed? */
+ if ( !device_assigned(seg, bus, devfn) )
+ {
+ ret = -EINVAL;
+ goto deassign_device_out;
+ }
+#endif
+
+ spin_lock(&pcidevs_lock);
+ ret = deassign_device(d, seg, bus, devfn);
+ spin_unlock(&pcidevs_lock);
+ if ( ret )
+ gdprintk(XENLOG_ERR, "XEN_DOMCTL_deassign_device: "
+ "deassign device (%04x:%02x:%02x.%u) failed\n",
+ seg, bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
+
+ deassign_device_out:
+ put_domain(d);
+ break;
+
+ default:
+ ret = -ENOSYS;
+ break;
+ }
+
+ return ret;
+}
+
/*
* Local variables:
* mode: C
diff -r a422e2a4451e -r ec7c81fbe0de xen/drivers/passthrough/pci.c
--- a/xen/drivers/passthrough/pci.c Sun Sep 18 00:26:52 2011 +0100
+++ b/xen/drivers/passthrough/pci.c Thu Sep 22 18:26:54 2011 +0100
@@ -441,11 +441,12 @@
while ( (pdev = pci_get_pdev_by_domain(d, -1, -1, -1)) )
{
pci_cleanup_msi(pdev);
- bus = pdev->bus; devfn = pdev->devfn;
- if ( deassign_device(d, bus, devfn) )
- printk("domain %d: deassign device (%02x:%02x.%x) failed!\n",
- d->domain_id, pdev->bus, PCI_SLOT(pdev->devfn),
- PCI_FUNC(pdev->devfn));
+ bus = pdev->bus;
+ devfn = pdev->devfn;
+ if ( deassign_device(d, pdev->seg, bus, devfn) )
+ printk("domain %d: deassign device (%04x:%02x:%02x.%u) failed!\n",
+ d->domain_id, pdev->seg, bus,
+ PCI_SLOT(devfn), PCI_FUNC(devfn));
}
spin_unlock(&pcidevs_lock);
}
diff -r a422e2a4451e -r ec7c81fbe0de xen/drivers/passthrough/vtd/iommu.c
--- a/xen/drivers/passthrough/vtd/iommu.c Sun Sep 18 00:26:52 2011 +0100
+++ b/xen/drivers/passthrough/vtd/iommu.c Thu Sep 22 18:26:54 2011 +0100
@@ -1620,13 +1620,13 @@
static int reassign_device_ownership(
struct domain *source,
struct domain *target,
- u8 bus, u8 devfn)
+ u16 seg, u8 bus, u8 devfn)
{
struct pci_dev *pdev;
int ret;
ASSERT(spin_is_locked(&pcidevs_lock));
- pdev = pci_get_pdev_by_domain(source, 0, bus, devfn);
+ pdev = pci_get_pdev_by_domain(source, seg, bus, devfn);
if (!pdev)
return -ENODEV;
@@ -2153,27 +2153,8 @@
return ret;
}
-/*
- * If the device isn't owned by dom0, it means it already
- * has been assigned to other domain, or it's not exist.
- */
-int device_assigned(u8 bus, u8 devfn)
-{
- struct pci_dev *pdev;
-
- spin_lock(&pcidevs_lock);
- pdev = pci_get_pdev_by_domain(dom0, 0, bus, devfn);
- if (!pdev)
- {
- spin_unlock(&pcidevs_lock);
- return -1;
- }
-
- spin_unlock(&pcidevs_lock);
- return 0;
-}
-
-static int intel_iommu_assign_device(struct domain *d, u8 bus, u8 devfn)
+static int intel_iommu_assign_device(
+ struct domain *d, u16 seg, u8 bus, u8 devfn)
{
struct acpi_rmrr_unit *rmrr;
int ret = 0, i;
@@ -2184,7 +2165,7 @@
return -ENODEV;
ASSERT(spin_is_locked(&pcidevs_lock));
- pdev = pci_get_pdev(0, bus, devfn);
+ pdev = pci_get_pdev(seg, bus, devfn);
if (!pdev)
return -ENODEV;
@@ -2195,7 +2176,7 @@
return -EBUSY;
}
- ret = reassign_device_ownership(dom0, d, bus, devfn);
+ ret = reassign_device_ownership(dom0, d, seg, bus, devfn);
if ( ret )
goto done;
@@ -2227,7 +2208,7 @@
return ret;
}
-static int intel_iommu_group_id(u8 bus, u8 devfn)
+static int intel_iommu_group_id(u16 seg, u8 bus, u8 devfn)
{
u8 secbus;
if ( find_upstream_bridge(&bus, &devfn, &secbus) < 0 )
diff -r a422e2a4451e -r ec7c81fbe0de xen/include/public/domctl.h
--- a/xen/include/public/domctl.h Sun Sep 18 00:26:52 2011 +0100
+++ b/xen/include/public/domctl.h Thu Sep 22 18:26:54 2011 +0100
@@ -455,15 +455,15 @@
/* XEN_DOMCTL_test_assign_device */
/* XEN_DOMCTL_deassign_device */
struct xen_domctl_assign_device {
- uint32_t machine_bdf; /* machine PCI ID of assigned device */
+ uint32_t machine_sbdf; /* machine PCI ID of assigned device */
};
typedef struct xen_domctl_assign_device xen_domctl_assign_device_t;
DEFINE_XEN_GUEST_HANDLE(xen_domctl_assign_device_t);
-/* Retrieve sibling devices infomation of machine_bdf */
+/* Retrieve sibling devices infomation of machine_sbdf */
/* XEN_DOMCTL_get_device_group */
struct xen_domctl_get_device_group {
- uint32_t machine_bdf; /* IN */
+ uint32_t machine_sbdf; /* IN */
uint32_t max_sdevs; /* IN */
uint32_t num_sdevs; /* OUT */
XEN_GUEST_HANDLE_64(uint32) sdev_array; /* OUT */
diff -r a422e2a4451e -r ec7c81fbe0de xen/include/xen/iommu.h
--- a/xen/include/xen/iommu.h Sun Sep 18 00:26:52 2011 +0100
+++ b/xen/include/xen/iommu.h Thu Sep 22 18:26:54 2011 +0100
@@ -74,11 +74,7 @@
int iommu_domain_init(struct domain *d);
void iommu_dom0_init(struct domain *d);
void iommu_domain_destroy(struct domain *d);
-int device_assigned(u8 bus, u8 devfn);
-int assign_device(struct domain *d, u8 bus, u8 devfn);
-int deassign_device(struct domain *d, u8 bus, u8 devfn);
-int iommu_get_device_group(struct domain *d, u8 bus, u8 devfn,
- XEN_GUEST_HANDLE_64(uint32) buf, int max_sdevs);
+int deassign_device(struct domain *d, u16 seg, u8 bus, u8 devfn);
/* iommu_map_page() takes flags to direct the mapping operation. */
#define _IOMMUF_readable 0
@@ -125,14 +121,14 @@
void (*dom0_init)(struct domain *d);
int (*add_device)(struct pci_dev *pdev);
int (*remove_device)(struct pci_dev *pdev);
- int (*assign_device)(struct domain *d, u8 bus, u8 devfn);
+ int (*assign_device)(struct domain *d, u16 seg, u8 bus, u8 devfn);
void (*teardown)(struct domain *d);
int (*map_page)(struct domain *d, unsigned long gfn, unsigned long mfn,
unsigned int flags);
int (*unmap_page)(struct domain *d, unsigned long gfn);
int (*reassign_device)(struct domain *s, struct domain *t,
- u8 bus, u8 devfn);
- int (*get_device_group_id)(u8 bus, u8 devfn);
+ u16 seg, u8 bus, u8 devfn);
+ int (*get_device_group_id)(u16 seg, u8 bus, u8 devfn);
void (*update_ire_from_apic)(unsigned int apic, unsigned int reg, unsigned
int value);
void (*update_ire_from_msi)(struct msi_desc *msi_desc, struct msi_msg
*msg);
void (*read_msi_from_ire)(struct msi_desc *msi_desc, struct msi_msg *msg);
@@ -155,4 +151,6 @@
void iommu_set_dom0_mapping(struct domain *d);
void iommu_share_p2m_table(struct domain *d);
+int iommu_do_domctl(struct xen_domctl *, XEN_GUEST_HANDLE(xen_domctl_t));
+
#endif /* _IOMMU_H_ */
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