Use MSI chip framework instead of arch MSI functions to configure
MSI/MSI-X irq. So we can manage MSI/MSI-X irq in a unified framework.
Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx>
---
Hi Michael,
I dropped the Acked-by , because this version has a
lot changes compared to last. So, I guess you may want to check it again.
---
arch/powerpc/include/asm/pci-bridge.h | 15 +++++++++++++++
arch/powerpc/kernel/msi.c | 12 ++++++++++--
arch/powerpc/kernel/pci-common.c | 3 +++
3 files changed, 28 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h
index 4ca90a3..233553e 100644
--- a/arch/powerpc/include/asm/pci-bridge.h
+++ b/arch/powerpc/include/asm/pci-bridge.h
@@ -32,6 +32,10 @@ struct pci_controller {
int self_busno;
struct resource busn;
+#ifdef CONFIG_PCI_MSI
+ struct msi_chip *msi_chip;
+#endif
+
void __iomem *io_base_virt;
#ifdef CONFIG_PPC64
void *io_base_alloc;
@@ -94,6 +98,17 @@ struct pci_controller {
void *private_data;
};
+#ifdef CONFIG_PCI_MSI
+extern struct msi_chip ppc_msi_chip;
+
+static inline struct msi_chip *pci_msi_chip(struct pci_bus *bus)
+{
+ struct pci_controller *hose = bus->sysdata;
+
+ return hose->msi_chip;
+}
+#endif
+
/* These are used for config access before all the PCI probing
has been done. */
extern int early_read_config_byte(struct pci_controller *hose, int bus,
diff --git a/arch/powerpc/kernel/msi.c b/arch/powerpc/kernel/msi.c
index 71bd161..f38b67c 100644
--- a/arch/powerpc/kernel/msi.c
+++ b/arch/powerpc/kernel/msi.c
@@ -13,7 +13,8 @@
#include <asm/machdep.h>
-int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
+static int ppc_setup_msi_irqs(struct msi_chip *chip,
+ struct pci_dev *dev, int nvec, int type)
{
if (!ppc_md.setup_msi_irqs || !ppc_md.teardown_msi_irqs) {
pr_debug("msi: Platform doesn't provide MSI callbacks.\n");
@@ -27,7 +28,13 @@ int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
return ppc_md.setup_msi_irqs(dev, nvec, type);
}
-void arch_teardown_msi_irqs(struct pci_dev *dev)
+static void ppc_teardown_msi_irqs(struct msi_chip *chip,
+ struct pci_dev *dev)
{
ppc_md.teardown_msi_irqs(dev);
}
+
+struct msi_chip ppc_msi_chip = {
+ .setup_irqs = ppc_setup_msi_irqs,
+ .teardown_irqs = ppc_teardown_msi_irqs,
+};
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index b2814e2..9f18b42 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1594,6 +1594,9 @@ void pcibios_scan_phb(struct pci_controller *hose)
/* Wire up PHB bus resources */
pcibios_setup_phb_resources(hose, &resources);
+#ifdef CONFIG_PCI_MSI
+ hose->msi_chip = &ppc_msi_chip;
+#endif
hose->busn.start = hose->first_busno;
hose->busn.end = hose->last_busno;
hose->busn.flags = IORESOURCE_BUS;
--
1.7.1
--
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