From: Boqun Feng <boqun.feng@gmail.com>
To: Bjorn Helgaas <bhelgaas@google.com>,
Arnd Bergmann <arnd@arndb.de>, Marc Zyngier <maz@kernel.org>
Cc: "Catalin Marinas" <catalin.marinas@arm.com>,
"Will Deacon" <will@kernel.org>,
"K. Y. Srinivasan" <kys@microsoft.com>,
"Haiyang Zhang" <haiyangz@microsoft.com>,
"Stephen Hemminger" <sthemmin@microsoft.com>,
"Wei Liu" <wei.liu@kernel.org>,
"Dexuan Cui" <decui@microsoft.com>,
"Lorenzo Pieralisi" <lorenzo.pieralisi@arm.com>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Boqun Feng" <boqun.feng@gmail.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org,
linux-pci@vger.kernel.org,
"Sunil Muthuswamy" <sunilmut@microsoft.com>,
"Mike Rapoport" <rppt@kernel.org>
Subject: [RFC v5 7/8] PCI: hv: Set up MSI domain at bridge probing time
Date: Tue, 20 Jul 2021 21:44:28 +0800 [thread overview]
Message-ID: <20210720134429.511541-8-boqun.feng@gmail.com> (raw)
In-Reply-To: <20210720134429.511541-1-boqun.feng@gmail.com>
Since PCI_HYPERV depends on PCI_MSI_IRQ_DOMAIN which selects
GENERIC_MSI_IRQ_DOMAIN, we can use dev_set_msi_domain() to set up the
MSI domain at probing time, and this works for both x86 and ARM64.
Therefore use it as the preparation for ARM64 Hyper-V PCI support.
As a result, no longer need to maintain ->fwnode in x86 specific
pci_sysdata, and make hv_pcibus_device own it instead.
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
---
drivers/pci/controller/pci-hyperv.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c
index 5741b1dd3c14..e6276aaa4659 100644
--- a/drivers/pci/controller/pci-hyperv.c
+++ b/drivers/pci/controller/pci-hyperv.c
@@ -450,6 +450,7 @@ enum hv_pcibus_state {
struct hv_pcibus_device {
struct pci_sysdata sysdata;
struct pci_host_bridge *bridge;
+ struct fwnode_handle *fwnode;
/* Protocol version negotiated with the host */
enum pci_protocol_version_t protocol_version;
enum hv_pcibus_state state;
@@ -1565,7 +1566,7 @@ static int hv_pcie_init_irq_domain(struct hv_pcibus_device *hbus)
hbus->msi_info.handler = handle_edge_irq;
hbus->msi_info.handler_name = "edge";
hbus->msi_info.data = hbus;
- hbus->irq_domain = pci_msi_create_irq_domain(hbus->sysdata.fwnode,
+ hbus->irq_domain = pci_msi_create_irq_domain(hbus->fwnode,
&hbus->msi_info,
x86_vector_domain);
if (!hbus->irq_domain) {
@@ -1574,6 +1575,8 @@ static int hv_pcie_init_irq_domain(struct hv_pcibus_device *hbus)
return -ENODEV;
}
+ dev_set_msi_domain(&hbus->bridge->dev, hbus->irq_domain);
+
return 0;
}
@@ -3118,9 +3121,9 @@ static int hv_pci_probe(struct hv_device *hdev,
goto unmap;
}
- hbus->sysdata.fwnode = irq_domain_alloc_named_fwnode(name);
+ hbus->fwnode = irq_domain_alloc_named_fwnode(name);
kfree(name);
- if (!hbus->sysdata.fwnode) {
+ if (!hbus->fwnode) {
ret = -ENOMEM;
goto unmap;
}
@@ -3198,7 +3201,7 @@ static int hv_pci_probe(struct hv_device *hdev,
free_irq_domain:
irq_domain_remove(hbus->irq_domain);
free_fwnode:
- irq_domain_free_fwnode(hbus->sysdata.fwnode);
+ irq_domain_free_fwnode(hbus->fwnode);
unmap:
iounmap(hbus->cfg_addr);
free_config:
@@ -3314,7 +3317,7 @@ static int hv_pci_remove(struct hv_device *hdev)
hv_free_config_window(hbus);
hv_pci_free_bridge_windows(hbus);
irq_domain_remove(hbus->irq_domain);
- irq_domain_free_fwnode(hbus->sysdata.fwnode);
+ irq_domain_free_fwnode(hbus->fwnode);
hv_put_dom_num(hbus->bridge->domain_nr);
--
2.30.2
next prev parent reply other threads:[~2021-07-20 13:59 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-20 13:44 [RFC v5 0/8] PCI: hv: Support host bridge probing on ARM64 Boqun Feng
2021-07-20 13:44 ` [RFC v5 1/8] PCI: Introduce domain_nr in pci_host_bridge Boqun Feng
2021-07-20 22:49 ` Bjorn Helgaas
2021-07-21 0:57 ` Boqun Feng
2021-07-20 13:44 ` [RFC v5 2/8] PCI: Support populating MSI domains of root buses via bridges Boqun Feng
2021-07-20 13:44 ` [RFC v5 3/8] arm64: PCI: Restructure pcibios_root_bridge_prepare() Boqun Feng
2021-07-20 13:44 ` [RFC v5 4/8] arm64: PCI: Support root bridge preparation for Hyper-V Boqun Feng
2021-07-20 13:44 ` [RFC v5 5/8] PCI: hv: Generify PCI probing Boqun Feng
2021-07-20 13:44 ` [RFC v5 6/8] PCI: hv: Set ->domain_nr of pci_host_bridge at probing time Boqun Feng
2021-07-20 13:44 ` Boqun Feng [this message]
2021-07-20 13:44 ` [RFC v5 8/8] PCI: hv: Turn on the host bridge probing on ARM64 Boqun Feng
2021-07-20 14:38 ` Marc Zyngier
2021-07-20 14:59 ` Boqun Feng
2021-07-20 15:53 ` Marc Zyngier
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