[PATCH v8 17/30] x86/PCI: Refine pci_acpi_scan_root() with generic pci_host_bridge
Signed-off-by: Yijing Wang
CC: Thomas Gleixner
CC: x...@kernel.org
---
arch/x86/pci/acpi.c | 37 +
1 files changed, 21 insertions(+), 16 deletions(-)
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index d2655d5..877acaf 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -349,6 +349,19 @@ static void probe_pci_root_info(struct pci_root_info *info,
entry->res->name = info->name;
}
+static int pci_host_bridge_prepare(struct pci_host_bridge *bridge)
+{
+ struct pci_sysdata *sd = dev_get_drvdata(>dev);
+
+ ACPI_COMPANION_SET(>dev, sd->companion);
+ return 0;
+}
+
+static struct pci_host_bridge_ops pci_host_ops = {
+ .pci_ops = _root_ops,
+ .prepare = pci_host_bridge_prepare,
+};
+
struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
{
struct acpi_device *device = root->device;
@@ -359,6 +372,7 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root
*root)
LIST_HEAD(crs_res);
LIST_HEAD(resources);
struct pci_bus *bus;
+ struct pci_host_bridge *host = NULL;
struct pci_sysdata *sd;
int node;
@@ -425,14 +439,13 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root
*root)
if (!setup_mcfg_map(info, domain, (u8)root->secondary.start,
(u8)root->secondary.end, root->mcfg_addr))
- bus = pci_create_root_bus(NULL, domain, busnum,
- _root_ops, sd, );
-
- if (bus) {
- pci_scan_child_bus(bus);
- pci_set_host_bridge_release(
- to_pci_host_bridge(bus->bridge),
- release_pci_root_info, info);
+ host = pci_scan_host_bridge(NULL, domain, busnum, sd,
+ , _host_ops);
+
+ if (host) {
+ bus = host->bus;
+ pci_set_host_bridge_release(host,
+ release_pci_root_info, info);
} else {
resource_list_free();
teardown_mcfg_map(info);
@@ -455,14 +468,6 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root
*root)
return bus;
}
-int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge)
-{
- struct pci_sysdata *sd = bridge->bus->sysdata;
-
- ACPI_COMPANION_SET(>dev, sd->companion);
- return 0;
-}
-
int __init pci_acpi_init(void)
{
struct pci_dev *dev = NULL;
--
1.7.1
--
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[PATCH v8 17/30] x86/PCI: Refine pci_acpi_scan_root() with generic pci_host_bridge
Signed-off-by: Yijing Wang wangyij...@huawei.com
CC: Thomas Gleixner t...@linutronix.de
CC: x...@kernel.org
---
arch/x86/pci/acpi.c | 37 +
1 files changed, 21 insertions(+), 16 deletions(-)
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index d2655d5..877acaf 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -349,6 +349,19 @@ static void probe_pci_root_info(struct pci_root_info *info,
entry-res-name = info-name;
}
+static int pci_host_bridge_prepare(struct pci_host_bridge *bridge)
+{
+ struct pci_sysdata *sd = dev_get_drvdata(bridge-dev);
+
+ ACPI_COMPANION_SET(bridge-dev, sd-companion);
+ return 0;
+}
+
+static struct pci_host_bridge_ops pci_host_ops = {
+ .pci_ops = pci_root_ops,
+ .prepare = pci_host_bridge_prepare,
+};
+
struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
{
struct acpi_device *device = root-device;
@@ -359,6 +372,7 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root
*root)
LIST_HEAD(crs_res);
LIST_HEAD(resources);
struct pci_bus *bus;
+ struct pci_host_bridge *host = NULL;
struct pci_sysdata *sd;
int node;
@@ -425,14 +439,13 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root
*root)
if (!setup_mcfg_map(info, domain, (u8)root-secondary.start,
(u8)root-secondary.end, root-mcfg_addr))
- bus = pci_create_root_bus(NULL, domain, busnum,
- pci_root_ops, sd, resources);
-
- if (bus) {
- pci_scan_child_bus(bus);
- pci_set_host_bridge_release(
- to_pci_host_bridge(bus-bridge),
- release_pci_root_info, info);
+ host = pci_scan_host_bridge(NULL, domain, busnum, sd,
+ resources, pci_host_ops);
+
+ if (host) {
+ bus = host-bus;
+ pci_set_host_bridge_release(host,
+ release_pci_root_info, info);
} else {
resource_list_free(resources);
teardown_mcfg_map(info);
@@ -455,14 +468,6 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root
*root)
return bus;
}
-int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge)
-{
- struct pci_sysdata *sd = bridge-bus-sysdata;
-
- ACPI_COMPANION_SET(bridge-dev, sd-companion);
- return 0;
-}
-
int __init pci_acpi_init(void)
{
struct pci_dev *dev = NULL;
--
1.7.1
--
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