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PCI: dwc: Add legacy interrupt callback handler

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Currently DesignWare IP does not handle legacy interrupts.
Add a legacy interrupt callback handler.

Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
[lorenzo.pieralisi@arm.com: updated commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
This commit is contained in:
Gustavo Pimentel 2018-07-19 10:32:16 +02:00 committed by Lorenzo Pieralisi
parent 3920a5d7b2
commit cb22d40b5f
3 changed files with 17 additions and 2 deletions
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10
drivers/pci/controller/dwc/pcie-designware-ep.c
View File

@ -370,6 +370,16 @@ static const struct pci_epc_ops epc_ops = {
.stop = dw_pcie_ep_stop,
};
int dw_pcie_ep_raise_legacy_irq(struct dw_pcie_ep *ep, u8 func_no)
{
struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
struct device *dev = pci->dev;
dev_err(dev, "EP cannot trigger legacy IRQs\n");
return -EINVAL;
}
int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no,
u8 interrupt_num)
{

3
drivers/pci/controller/dwc/pcie-designware-plat.c
View File

@ -87,8 +87,7 @@ static int dw_plat_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
switch (type) {
case PCI_EPC_IRQ_LEGACY:
dev_err(pci->dev, "EP cannot trigger legacy IRQs\n");
return -EINVAL;
return dw_pcie_ep_raise_legacy_irq(ep, func_no);
case PCI_EPC_IRQ_MSI:
return dw_pcie_ep_raise_msi_irq(ep, func_no, interrupt_num);
case PCI_EPC_IRQ_MSIX:

6
drivers/pci/controller/dwc/pcie-designware.h
View File

@ -348,6 +348,7 @@ static inline int dw_pcie_allocate_domains(struct pcie_port *pp)
void dw_pcie_ep_linkup(struct dw_pcie_ep *ep);
int dw_pcie_ep_init(struct dw_pcie_ep *ep);
void dw_pcie_ep_exit(struct dw_pcie_ep *ep);
int dw_pcie_ep_raise_legacy_irq(struct dw_pcie_ep *ep, u8 func_no);
int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no,
u8 interrupt_num);
int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no,
@ -367,6 +368,11 @@ static inline void dw_pcie_ep_exit(struct dw_pcie_ep *ep)
{
}
static inline int dw_pcie_ep_raise_legacy_irq(struct dw_pcie_ep *ep, u8 func_no)
{
return 0;
}
static inline int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no,
u8 interrupt_num)
{