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PCI: plda: Add event bitmap field to struct plda_pcie_rp

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PLDA DMA interrupts are not all implemented, and the non-implemented
interrupts should be masked. Add a bitmap field to mask the non-implemented
interrupts.

Link: https://lore.kernel.org/linux-pci/20240328091835.14797-18-minda.chen@starfivetech.com
Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Minda Chen 2024-03-28 17:18:30 +08:00 committed by Bjorn Helgaas
parent 4602c370bd
commit a576fff39e
3 changed files with 6 additions and 2 deletions
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1
drivers/pci/controller/plda/pcie-microchip-host.c
View File

@ -635,6 +635,7 @@ static int mc_platform_init(struct pci_config_window *cfg)
port->plda.event_ops = &mc_event_ops;
port->plda.event_irq_chip = &mc_event_irq_chip;
port->plda.events_bitmap = GENMASK(NUM_EVENTS - 1, 0);
/* Address translation is up; safe to enable interrupts */
ret = plda_init_interrupts(pdev, &port->plda, &mc_event);

6
drivers/pci/controller/plda/pcie-plda-host.c
View File

@ -290,6 +290,7 @@ static void plda_handle_event(struct irq_desc *desc)
events = port->event_ops->get_events(port);
events &= port->events_bitmap;
for_each_set_bit(bit, &events, port->num_events)
generic_handle_domain_irq(port->event_domain, bit);
@ -420,8 +421,9 @@ int plda_init_interrupts(struct platform_device *pdev,
{
struct device *dev = &pdev->dev;
int irq;
int i, intx_irq, msi_irq, event_irq;
int intx_irq, msi_irq, event_irq;
int ret;
u32 i;
if (!port->event_ops)
port->event_ops = &plda_event_ops;
@ -439,7 +441,7 @@ int plda_init_interrupts(struct platform_device *pdev,
if (irq < 0)
return -ENODEV;
for (i = 0; i < port->num_events; i++) {
for_each_set_bit(i, &port->events_bitmap, port->num_events) {
event_irq = irq_create_mapping(port->event_domain, i);
if (!event_irq) {
dev_err(dev, "failed to map hwirq %d\n", i);

1
drivers/pci/controller/plda/pcie-plda.h
View File

@ -160,6 +160,7 @@ struct plda_pcie_rp {
const struct plda_event_ops *event_ops;
const struct irq_chip *event_irq_chip;
void __iomem *bridge_addr;
unsigned long events_bitmap;
int num_events;
};