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>
---
arch/tile/include/asm/pci.h | 10 ++++++++++
arch/tile/kernel/pci_gx.c | 13 +++++++++++--
2 files changed, 21 insertions(+), 2 deletions(-)
diff --git a/arch/tile/include/asm/pci.h b/arch/tile/include/asm/pci.h
index dfedd7a..d27d9ec 100644
--- a/arch/tile/include/asm/pci.h
+++ b/arch/tile/include/asm/pci.h
@@ -152,6 +152,7 @@ struct pci_controller {
int pio_io_index; /* PIO region index for I/O space access */
#endif
+ struct msi_chip *msi_chip;
/*
* Mem-Map regions for all the memory controllers so that Linux can
* map all of its physical memory space to the PCI bus.
@@ -179,6 +180,15 @@ struct pci_controller {
int irq_intx_table[4];
};
+extern struct msi_chip tilegx_msi;
+
+static inline struct msi_chip *pci_msi_chip(struct pci_bus *bus)
+{
+ struct pci_controller *controller = bus->sysdata;
+
+ return controller->msi_chip;
+}
+
extern struct pci_controller pci_controllers[TILEGX_NUM_TRIO * TILEGX_TRIO_PCIES];
extern gxio_trio_context_t trio_contexts[TILEGX_NUM_TRIO];
extern int num_trio_shims;
diff --git a/arch/tile/kernel/pci_gx.c b/arch/tile/kernel/pci_gx.c
index e39f9c5..ba66517 100644
--- a/arch/tile/kernel/pci_gx.c
+++ b/arch/tile/kernel/pci_gx.c
@@ -887,6 +887,7 @@ int __init pcibios_init(void)
controller->mem_offset);
pci_add_resource(&resources, &controller->io_space);
controller->first_busno = next_busno;
+ controller->msi_chip = &tilegx_msi;
bus = pci_scan_root_bus(NULL, next_busno, controller->ops,
controller, &resources);
controller->root_bus = bus;
@@ -1485,7 +1486,8 @@ static struct irq_chip tilegx_msi_chip = {
/* TBD: support set_affinity. */
};
-int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
+static int tile_setup_msi_irq(struct msi_chip *chip,
+ struct pci_dev *pdev, struct msi_desc *desc)
{
struct pci_controller *controller;
gxio_trio_context_t *trio_context;
@@ -1604,7 +1606,12 @@ is_64_failure:
return ret;
}
-void arch_teardown_msi_irq(unsigned int irq)
+static void tile_teardown_msi_irq(struct msi_chip *chip, unsigned int irq)
{
irq_free_hwirq(irq);
}
+
+struct msi_chip tilegx_msi = {
+ .setup_irq = tile_setup_msi_irq,
+ .teardown_irq = tile_teardown_msi_irq,
+};
--
1.7.1
