PCI: plda: Add event bitmap field to struct plda_pcie_rp
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>
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@ -635,6 +635,7 @@ static int mc_platform_init(struct pci_config_window *cfg)
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port->plda.event_ops = &mc_event_ops;
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port->plda.event_irq_chip = &mc_event_irq_chip;
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port->plda.events_bitmap = GENMASK(NUM_EVENTS - 1, 0);
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/* Address translation is up; safe to enable interrupts */
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ret = plda_init_interrupts(pdev, &port->plda, &mc_event);
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@ -290,6 +290,7 @@ static void plda_handle_event(struct irq_desc *desc)
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events = port->event_ops->get_events(port);
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events &= port->events_bitmap;
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for_each_set_bit(bit, &events, port->num_events)
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generic_handle_domain_irq(port->event_domain, bit);
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@ -420,8 +421,9 @@ int plda_init_interrupts(struct platform_device *pdev,
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{
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struct device *dev = &pdev->dev;
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int irq;
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int i, intx_irq, msi_irq, event_irq;
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int intx_irq, msi_irq, event_irq;
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int ret;
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u32 i;
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if (!port->event_ops)
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port->event_ops = &plda_event_ops;
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@ -439,7 +441,7 @@ int plda_init_interrupts(struct platform_device *pdev,
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if (irq < 0)
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return -ENODEV;
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for (i = 0; i < port->num_events; i++) {
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for_each_set_bit(i, &port->events_bitmap, port->num_events) {
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event_irq = irq_create_mapping(port->event_domain, i);
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if (!event_irq) {
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dev_err(dev, "failed to map hwirq %d\n", i);
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@ -160,6 +160,7 @@ struct plda_pcie_rp {
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const struct plda_event_ops *event_ops;
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const struct irq_chip *event_irq_chip;
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void __iomem *bridge_addr;
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unsigned long events_bitmap;
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int num_events;
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};
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