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PCI: microchip: Add num_events field to struct plda_pcie_rp

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The number of events is different across platforms. In order to share
interrupt processing code, add a variable that defines the number of
events so that it can be set per-platform instead of hardcoding it.

Link: https://lore.kernel.org/linux-pci/20240328091835.14797-12-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>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
This commit is contained in:
Minda Chen 2024-03-28 17:18:24 +08:00 committed by Bjorn Helgaas
parent f966c028cf
commit d4078c87a5
2 changed files with 6 additions and 3 deletions
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8
drivers/pci/controller/plda/pcie-microchip-host.c
View File

@ -653,7 +653,7 @@ static void plda_handle_event(struct irq_desc *desc)
events = mc_get_events(port);
for_each_set_bit(bit, &events, NUM_EVENTS)
for_each_set_bit(bit, &events, port->num_events)
generic_handle_domain_irq(port->event_domain, bit);
chained_irq_exit(chip, desc);
@ -816,7 +816,8 @@ static int plda_pcie_init_irq_domains(struct plda_pcie_rp *port)
return -EINVAL;
}
port->event_domain = irq_domain_add_linear(pcie_intc_node, NUM_EVENTS,
port->event_domain = irq_domain_add_linear(pcie_intc_node,
port->num_events,
&plda_event_domain_ops,
port);
if (!port->event_domain) {
@ -920,7 +921,7 @@ static int plda_init_interrupts(struct platform_device *pdev, struct plda_pcie_r
if (irq < 0)
return -ENODEV;
for (i = 0; i < NUM_EVENTS; i++) {
for (i = 0; i < port->num_events; i++) {
event_irq = irq_create_mapping(port->event_domain, i);
if (!event_irq) {
dev_err(dev, "failed to map hwirq %d\n", i);
@ -1011,6 +1012,7 @@ static int mc_host_probe(struct platform_device *pdev)
bridge_base_addr = port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
plda->bridge_addr = bridge_base_addr;
plda->num_events = NUM_EVENTS;
/* Allow enabling MSI by disabling MSI-X */
val = readl(bridge_base_addr + PCIE_PCI_IRQ_DW0);

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

@ -124,6 +124,7 @@ struct plda_pcie_rp {
raw_spinlock_t lock;
struct plda_msi msi;
void __iomem *bridge_addr;
int num_events;
};
void plda_pcie_setup_window(void __iomem *bridge_base_addr, u32 index,