[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [PATCH v2 3/4] xen/pci: Move x86 specific code to x86 directory.
On Tue, 3 Nov 2020, Rahul Singh wrote: > passthrough/pci.c file is common for all architecture, but there is x86 > sepcific code in this file. ^ specific Aside from that: Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx> > Move x86 specific code to the x86 directory to avoid compilation error > for other architecture. > > No functional change. > > Signed-off-by: Rahul Singh <rahul.singh@xxxxxxx> > --- > > Changes is v2: > - fixed comments. > - rename pci_clean_dpci_irqs() to arch_pci_clean_pirqs(). > > --- > xen/drivers/passthrough/pci.c | 76 +---------------------- > xen/drivers/passthrough/x86/Makefile | 1 + > xen/drivers/passthrough/x86/iommu.c | 7 +++ > xen/drivers/passthrough/x86/pci.c | 91 ++++++++++++++++++++++++++++ > xen/include/xen/pci.h | 2 + > 5 files changed, 102 insertions(+), 75 deletions(-) > create mode 100644 xen/drivers/passthrough/x86/pci.c > > diff --git a/xen/drivers/passthrough/pci.c b/xen/drivers/passthrough/pci.c > index 2a3bce1462..04d3e2c0f9 100644 > --- a/xen/drivers/passthrough/pci.c > +++ b/xen/drivers/passthrough/pci.c > @@ -14,7 +14,6 @@ > * this program; If not, see <http://www.gnu.org/licenses/>. > */ > > -#include <xen/sched.h> > #include <xen/pci.h> > #include <xen/pci_regs.h> > #include <xen/pci_ids.h> > @@ -24,7 +23,6 @@ > #include <xen/irq.h> > #include <xen/param.h> > #include <xen/vm_event.h> > -#include <asm/hvm/irq.h> > #include <xen/delay.h> > #include <xen/keyhandler.h> > #include <xen/event.h> > @@ -847,71 +845,6 @@ int pci_remove_device(u16 seg, u8 bus, u8 devfn) > return ret; > } > > -static int pci_clean_dpci_irq(struct domain *d, > - struct hvm_pirq_dpci *pirq_dpci, void *arg) > -{ > - struct dev_intx_gsi_link *digl, *tmp; > - > - pirq_guest_unbind(d, dpci_pirq(pirq_dpci)); > - > - if ( pt_irq_need_timer(pirq_dpci->flags) ) > - kill_timer(&pirq_dpci->timer); > - > - list_for_each_entry_safe ( digl, tmp, &pirq_dpci->digl_list, list ) > - { > - list_del(&digl->list); > - xfree(digl); > - } > - > - radix_tree_delete(&d->pirq_tree, dpci_pirq(pirq_dpci)->pirq); > - > - if ( !pt_pirq_softirq_active(pirq_dpci) ) > - return 0; > - > - domain_get_irq_dpci(d)->pending_pirq_dpci = pirq_dpci; > - > - return -ERESTART; > -} > - > -static int pci_clean_dpci_irqs(struct domain *d) > -{ > - struct hvm_irq_dpci *hvm_irq_dpci = NULL; > - > - if ( !is_iommu_enabled(d) ) > - return 0; > - > - if ( !is_hvm_domain(d) ) > - return 0; > - > - spin_lock(&d->event_lock); > - hvm_irq_dpci = domain_get_irq_dpci(d); > - if ( hvm_irq_dpci != NULL ) > - { > - int ret = 0; > - > - if ( hvm_irq_dpci->pending_pirq_dpci ) > - { > - if ( pt_pirq_softirq_active(hvm_irq_dpci->pending_pirq_dpci) ) > - ret = -ERESTART; > - else > - hvm_irq_dpci->pending_pirq_dpci = NULL; > - } > - > - if ( !ret ) > - ret = pt_pirq_iterate(d, pci_clean_dpci_irq, NULL); > - if ( ret ) > - { > - spin_unlock(&d->event_lock); > - return ret; > - } > - > - hvm_domain_irq(d)->dpci = NULL; > - free_hvm_irq_dpci(hvm_irq_dpci); > - } > - spin_unlock(&d->event_lock); > - return 0; > -} > - > /* Caller should hold the pcidevs_lock */ > static int deassign_device(struct domain *d, uint16_t seg, uint8_t bus, > uint8_t devfn) > @@ -971,7 +904,7 @@ int pci_release_devices(struct domain *d) > int ret; > > pcidevs_lock(); > - ret = pci_clean_dpci_irqs(d); > + ret = arch_pci_clean_pirqs(d); > if ( ret ) > { > pcidevs_unlock(); > @@ -1375,13 +1308,6 @@ static int __init setup_dump_pcidevs(void) > } > __initcall(setup_dump_pcidevs); > > -int iommu_update_ire_from_msi( > - struct msi_desc *msi_desc, struct msi_msg *msg) > -{ > - return iommu_intremap > - ? iommu_call(&iommu_ops, update_ire_from_msi, msi_desc, msg) : 0; > -} > - > static int iommu_add_device(struct pci_dev *pdev) > { > const struct domain_iommu *hd; > diff --git a/xen/drivers/passthrough/x86/Makefile > b/xen/drivers/passthrough/x86/Makefile > index aa515c680d..d02ff75de5 100644 > --- a/xen/drivers/passthrough/x86/Makefile > +++ b/xen/drivers/passthrough/x86/Makefile > @@ -1,2 +1,3 @@ > obj-$(CONFIG_PCI_ATS) += ats.o > obj-y += iommu.o > +obj-y += pci.o > diff --git a/xen/drivers/passthrough/x86/iommu.c > b/xen/drivers/passthrough/x86/iommu.c > index f17b1820f4..875e67b53b 100644 > --- a/xen/drivers/passthrough/x86/iommu.c > +++ b/xen/drivers/passthrough/x86/iommu.c > @@ -308,6 +308,13 @@ struct page_info *iommu_alloc_pgtable(struct domain *d) > return pg; > } > > +int iommu_update_ire_from_msi( > + struct msi_desc *msi_desc, struct msi_msg *msg) > +{ > + return iommu_intremap > + ? iommu_call(&iommu_ops, update_ire_from_msi, msi_desc, msg) : 0; > +} > + > /* > * Local variables: > * mode: C > diff --git a/xen/drivers/passthrough/x86/pci.c > b/xen/drivers/passthrough/x86/pci.c > new file mode 100644 > index 0000000000..59588aa8d4 > --- /dev/null > +++ b/xen/drivers/passthrough/x86/pci.c > @@ -0,0 +1,91 @@ > +/* > + * This program is free software; you can redistribute it and/or modify it > + * under the terms and conditions of the GNU General Public License, > + * version 2, as published by the Free Software Foundation. > + * > + * This program is distributed in the hope it will be useful, but WITHOUT > + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or > + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for > + * more details. > + * > + * You should have received a copy of the GNU General Public License along > with > + * this program; If not, see <http://www.gnu.org/licenses/>. > + */ > + > +#include <xen/sched.h> > +#include <xen/pci.h> > + > +static int pci_clean_dpci_irq(struct domain *d, > + struct hvm_pirq_dpci *pirq_dpci, void *arg) > +{ > + struct dev_intx_gsi_link *digl, *tmp; > + > + pirq_guest_unbind(d, dpci_pirq(pirq_dpci)); > + > + if ( pt_irq_need_timer(pirq_dpci->flags) ) > + kill_timer(&pirq_dpci->timer); > + > + list_for_each_entry_safe ( digl, tmp, &pirq_dpci->digl_list, list ) > + { > + list_del(&digl->list); > + xfree(digl); > + } > + > + radix_tree_delete(&d->pirq_tree, dpci_pirq(pirq_dpci)->pirq); > + > + if ( !pt_pirq_softirq_active(pirq_dpci) ) > + return 0; > + > + domain_get_irq_dpci(d)->pending_pirq_dpci = pirq_dpci; > + > + return -ERESTART; > +} > + > +int arch_pci_clean_pirqs(struct domain *d) > +{ > + struct hvm_irq_dpci *hvm_irq_dpci = NULL; > + > + if ( !is_iommu_enabled(d) ) > + return 0; > + > + if ( !is_hvm_domain(d) ) > + return 0; > + > + spin_lock(&d->event_lock); > + hvm_irq_dpci = domain_get_irq_dpci(d); > + if ( hvm_irq_dpci != NULL ) > + { > + int ret = 0; > + > + if ( hvm_irq_dpci->pending_pirq_dpci ) > + { > + if ( pt_pirq_softirq_active(hvm_irq_dpci->pending_pirq_dpci) ) > + ret = -ERESTART; > + else > + hvm_irq_dpci->pending_pirq_dpci = NULL; > + } > + > + if ( !ret ) > + ret = pt_pirq_iterate(d, pci_clean_dpci_irq, NULL); > + if ( ret ) > + { > + spin_unlock(&d->event_lock); > + return ret; > + } > + > + hvm_domain_irq(d)->dpci = NULL; > + free_hvm_irq_dpci(hvm_irq_dpci); > + } > + spin_unlock(&d->event_lock); > + > + return 0; > +} > + > +/* > + * Local variables: > + * mode: C > + * c-file-style: "BSD" > + * c-basic-offset: 4 > + * indent-tabs-mode: nil > + * End: > + */ > diff --git a/xen/include/xen/pci.h b/xen/include/xen/pci.h > index c4d3879761..fd28d11f6e 100644 > --- a/xen/include/xen/pci.h > +++ b/xen/include/xen/pci.h > @@ -209,4 +209,6 @@ int msixtbl_pt_register(struct domain *, struct pirq *, > uint64_t gtable); > void msixtbl_pt_unregister(struct domain *, struct pirq *); > void msixtbl_pt_cleanup(struct domain *d); > > +int arch_pci_clean_pirqs(struct domain *d); > + > #endif /* __XEN_PCI_H__ */ > -- > 2.17.1 >
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