From d4078c87a530094839e4ba82c75f20262545c5ae Mon Sep 17 00:00:00 2001 From: Minda Chen Date: Thu, 28 Mar 2024 17:18:24 +0800 Subject: [PATCH] PCI: microchip: Add num_events field to struct plda_pcie_rp MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Krzysztof Wilczyński Signed-off-by: Bjorn Helgaas Reviewed-by: Conor Dooley --- drivers/pci/controller/plda/pcie-microchip-host.c | 8 +++++--- drivers/pci/controller/plda/pcie-plda.h | 1 + 2 files changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/pci/controller/plda/pcie-microchip-host.c b/drivers/pci/controller/plda/pcie-microchip-host.c index f4caca9e6e6e..4eba3e169b9b 100644 --- a/drivers/pci/controller/plda/pcie-microchip-host.c +++ b/drivers/pci/controller/plda/pcie-microchip-host.c @@ -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); diff --git a/drivers/pci/controller/plda/pcie-plda.h b/drivers/pci/controller/plda/pcie-plda.h index e4c51b3d0c13..2a7d82c15c8e 100644 --- a/drivers/pci/controller/plda/pcie-plda.h +++ b/drivers/pci/controller/plda/pcie-plda.h @@ -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,