PCI: microchip: Rename interrupt related functions
Rename mc_* to plda_* for IRQ functions and related IRQ domain ops data instances. MSI, INTx interrupt code and IRQ init code can all be re-used. Link: https://lore.kernel.org/linux-pci/20240328091835.14797-11-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> Acked-by: Conor Dooley <conor.dooley@microchip.com>
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@ -318,7 +318,7 @@ static void mc_pcie_enable_msi(struct mc_pcie *port, void __iomem *ecam)
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ecam + MC_MSI_CAP_CTRL_OFFSET + PCI_MSI_ADDRESS_HI);
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}
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static void mc_handle_msi(struct irq_desc *desc)
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static void plda_handle_msi(struct irq_desc *desc)
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{
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struct plda_pcie_rp *port = irq_desc_get_handler_data(desc);
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struct irq_chip *chip = irq_desc_get_chip(desc);
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@ -346,7 +346,7 @@ static void mc_handle_msi(struct irq_desc *desc)
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chained_irq_exit(chip, desc);
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}
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static void mc_msi_bottom_irq_ack(struct irq_data *data)
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static void plda_msi_bottom_irq_ack(struct irq_data *data)
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{
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struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
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void __iomem *bridge_base_addr = port->bridge_addr;
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@ -355,7 +355,7 @@ static void mc_msi_bottom_irq_ack(struct irq_data *data)
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writel_relaxed(BIT(bitpos), bridge_base_addr + ISTATUS_MSI);
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}
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static void mc_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
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static void plda_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
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{
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struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
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phys_addr_t addr = port->msi.vector_phy;
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@ -368,21 +368,23 @@ static void mc_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
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(int)data->hwirq, msg->address_hi, msg->address_lo);
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}
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static int mc_msi_set_affinity(struct irq_data *irq_data,
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const struct cpumask *mask, bool force)
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static int plda_msi_set_affinity(struct irq_data *irq_data,
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const struct cpumask *mask, bool force)
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{
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return -EINVAL;
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}
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static struct irq_chip mc_msi_bottom_irq_chip = {
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.name = "Microchip MSI",
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.irq_ack = mc_msi_bottom_irq_ack,
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.irq_compose_msi_msg = mc_compose_msi_msg,
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.irq_set_affinity = mc_msi_set_affinity,
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static struct irq_chip plda_msi_bottom_irq_chip = {
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.name = "PLDA MSI",
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.irq_ack = plda_msi_bottom_irq_ack,
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.irq_compose_msi_msg = plda_compose_msi_msg,
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.irq_set_affinity = plda_msi_set_affinity,
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};
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static int mc_irq_msi_domain_alloc(struct irq_domain *domain, unsigned int virq,
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unsigned int nr_irqs, void *args)
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static int plda_irq_msi_domain_alloc(struct irq_domain *domain,
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unsigned int virq,
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unsigned int nr_irqs,
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void *args)
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{
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struct plda_pcie_rp *port = domain->host_data;
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struct plda_msi *msi = &port->msi;
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@ -397,7 +399,7 @@ static int mc_irq_msi_domain_alloc(struct irq_domain *domain, unsigned int virq,
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set_bit(bit, msi->used);
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irq_domain_set_info(domain, virq, bit, &mc_msi_bottom_irq_chip,
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irq_domain_set_info(domain, virq, bit, &plda_msi_bottom_irq_chip,
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domain->host_data, handle_edge_irq, NULL, NULL);
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mutex_unlock(&msi->lock);
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@ -405,8 +407,9 @@ static int mc_irq_msi_domain_alloc(struct irq_domain *domain, unsigned int virq,
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return 0;
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}
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static void mc_irq_msi_domain_free(struct irq_domain *domain, unsigned int virq,
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unsigned int nr_irqs)
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static void plda_irq_msi_domain_free(struct irq_domain *domain,
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unsigned int virq,
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unsigned int nr_irqs)
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{
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struct irq_data *d = irq_domain_get_irq_data(domain, virq);
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struct plda_pcie_rp *port = irq_data_get_irq_chip_data(d);
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@ -423,24 +426,24 @@ static void mc_irq_msi_domain_free(struct irq_domain *domain, unsigned int virq,
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}
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static const struct irq_domain_ops msi_domain_ops = {
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.alloc = mc_irq_msi_domain_alloc,
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.free = mc_irq_msi_domain_free,
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.alloc = plda_irq_msi_domain_alloc,
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.free = plda_irq_msi_domain_free,
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};
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static struct irq_chip mc_msi_irq_chip = {
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.name = "Microchip PCIe MSI",
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static struct irq_chip plda_msi_irq_chip = {
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.name = "PLDA PCIe MSI",
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.irq_ack = irq_chip_ack_parent,
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.irq_mask = pci_msi_mask_irq,
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.irq_unmask = pci_msi_unmask_irq,
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};
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static struct msi_domain_info mc_msi_domain_info = {
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static struct msi_domain_info plda_msi_domain_info = {
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.flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
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MSI_FLAG_PCI_MSIX),
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.chip = &mc_msi_irq_chip,
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.chip = &plda_msi_irq_chip,
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};
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static int mc_allocate_msi_domains(struct plda_pcie_rp *port)
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static int plda_allocate_msi_domains(struct plda_pcie_rp *port)
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{
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struct device *dev = port->dev;
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struct fwnode_handle *fwnode = of_node_to_fwnode(dev->of_node);
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@ -455,7 +458,8 @@ static int mc_allocate_msi_domains(struct plda_pcie_rp *port)
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return -ENOMEM;
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}
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msi->msi_domain = pci_msi_create_irq_domain(fwnode, &mc_msi_domain_info,
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msi->msi_domain = pci_msi_create_irq_domain(fwnode,
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&plda_msi_domain_info,
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msi->dev_domain);
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if (!msi->msi_domain) {
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dev_err(dev, "failed to create MSI domain\n");
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@ -466,7 +470,7 @@ static int mc_allocate_msi_domains(struct plda_pcie_rp *port)
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return 0;
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}
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static void mc_handle_intx(struct irq_desc *desc)
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static void plda_handle_intx(struct irq_desc *desc)
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{
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struct plda_pcie_rp *port = irq_desc_get_handler_data(desc);
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struct irq_chip *chip = irq_desc_get_chip(desc);
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@ -493,7 +497,7 @@ static void mc_handle_intx(struct irq_desc *desc)
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chained_irq_exit(chip, desc);
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}
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static void mc_ack_intx_irq(struct irq_data *data)
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static void plda_ack_intx_irq(struct irq_data *data)
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{
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struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
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void __iomem *bridge_base_addr = port->bridge_addr;
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@ -502,7 +506,7 @@ static void mc_ack_intx_irq(struct irq_data *data)
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writel_relaxed(mask, bridge_base_addr + ISTATUS_LOCAL);
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}
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static void mc_mask_intx_irq(struct irq_data *data)
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static void plda_mask_intx_irq(struct irq_data *data)
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{
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struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
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void __iomem *bridge_base_addr = port->bridge_addr;
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@ -517,7 +521,7 @@ static void mc_mask_intx_irq(struct irq_data *data)
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raw_spin_unlock_irqrestore(&port->lock, flags);
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}
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static void mc_unmask_intx_irq(struct irq_data *data)
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static void plda_unmask_intx_irq(struct irq_data *data)
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{
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struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
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void __iomem *bridge_base_addr = port->bridge_addr;
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@ -532,24 +536,24 @@ static void mc_unmask_intx_irq(struct irq_data *data)
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raw_spin_unlock_irqrestore(&port->lock, flags);
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}
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static struct irq_chip mc_intx_irq_chip = {
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.name = "Microchip PCIe INTx",
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.irq_ack = mc_ack_intx_irq,
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.irq_mask = mc_mask_intx_irq,
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.irq_unmask = mc_unmask_intx_irq,
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static struct irq_chip plda_intx_irq_chip = {
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.name = "PLDA PCIe INTx",
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.irq_ack = plda_ack_intx_irq,
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.irq_mask = plda_mask_intx_irq,
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.irq_unmask = plda_unmask_intx_irq,
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};
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static int mc_pcie_intx_map(struct irq_domain *domain, unsigned int irq,
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irq_hw_number_t hwirq)
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static int plda_pcie_intx_map(struct irq_domain *domain, unsigned int irq,
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irq_hw_number_t hwirq)
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{
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irq_set_chip_and_handler(irq, &mc_intx_irq_chip, handle_level_irq);
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irq_set_chip_and_handler(irq, &plda_intx_irq_chip, handle_level_irq);
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irq_set_chip_data(irq, domain->host_data);
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return 0;
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}
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static const struct irq_domain_ops intx_domain_ops = {
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.map = mc_pcie_intx_map,
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.map = plda_pcie_intx_map,
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};
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static inline u32 reg_to_event(u32 reg, struct event_map field)
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@ -609,7 +613,7 @@ static u32 local_events(struct mc_pcie *port)
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return val;
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}
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static u32 get_events(struct plda_pcie_rp *port)
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static u32 mc_get_events(struct plda_pcie_rp *port)
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{
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struct mc_pcie *mc_port = container_of(port, struct mc_pcie, plda);
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u32 events = 0;
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@ -638,7 +642,7 @@ static irqreturn_t mc_event_handler(int irq, void *dev_id)
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return IRQ_HANDLED;
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}
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static void mc_handle_event(struct irq_desc *desc)
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static void plda_handle_event(struct irq_desc *desc)
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{
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struct plda_pcie_rp *port = irq_desc_get_handler_data(desc);
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unsigned long events;
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@ -647,7 +651,7 @@ static void mc_handle_event(struct irq_desc *desc)
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chained_irq_enter(chip, desc);
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events = get_events(port);
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events = mc_get_events(port);
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for_each_set_bit(bit, &events, NUM_EVENTS)
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generic_handle_domain_irq(port->event_domain, bit);
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@ -741,8 +745,8 @@ static struct irq_chip mc_event_irq_chip = {
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.irq_unmask = mc_unmask_event_irq,
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};
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static int mc_pcie_event_map(struct irq_domain *domain, unsigned int irq,
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irq_hw_number_t hwirq)
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static int plda_pcie_event_map(struct irq_domain *domain, unsigned int irq,
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irq_hw_number_t hwirq)
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{
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irq_set_chip_and_handler(irq, &mc_event_irq_chip, handle_level_irq);
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irq_set_chip_data(irq, domain->host_data);
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@ -750,8 +754,8 @@ static int mc_pcie_event_map(struct irq_domain *domain, unsigned int irq,
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return 0;
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}
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static const struct irq_domain_ops event_domain_ops = {
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.map = mc_pcie_event_map,
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static const struct irq_domain_ops plda_event_domain_ops = {
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.map = plda_pcie_event_map,
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};
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static inline void mc_pcie_deinit_clk(void *data)
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@ -799,7 +803,7 @@ static int mc_pcie_init_clks(struct device *dev)
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return 0;
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}
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static int mc_pcie_init_irq_domains(struct plda_pcie_rp *port)
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static int plda_pcie_init_irq_domains(struct plda_pcie_rp *port)
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{
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struct device *dev = port->dev;
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struct device_node *node = dev->of_node;
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@ -813,7 +817,8 @@ static int mc_pcie_init_irq_domains(struct plda_pcie_rp *port)
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}
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port->event_domain = irq_domain_add_linear(pcie_intc_node, NUM_EVENTS,
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&event_domain_ops, port);
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&plda_event_domain_ops,
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port);
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if (!port->event_domain) {
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dev_err(dev, "failed to get event domain\n");
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of_node_put(pcie_intc_node);
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@ -835,7 +840,7 @@ static int mc_pcie_init_irq_domains(struct plda_pcie_rp *port)
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of_node_put(pcie_intc_node);
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raw_spin_lock_init(&port->lock);
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return mc_allocate_msi_domains(port);
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return plda_allocate_msi_domains(port);
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}
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static inline void mc_clear_secs(struct mc_pcie *port)
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@ -898,14 +903,14 @@ static void mc_disable_interrupts(struct mc_pcie *port)
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writel_relaxed(GENMASK(31, 0), bridge_base_addr + ISTATUS_HOST);
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}
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static int mc_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp *port)
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static int plda_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp *port)
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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 ret;
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ret = mc_pcie_init_irq_domains(port);
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ret = plda_pcie_init_irq_domains(port);
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if (ret) {
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dev_err(dev, "failed creating IRQ domains\n");
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return ret;
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@ -938,7 +943,7 @@ static int mc_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp
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}
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/* Plug the INTx chained handler */
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irq_set_chained_handler_and_data(intx_irq, mc_handle_intx, port);
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irq_set_chained_handler_and_data(intx_irq, plda_handle_intx, port);
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msi_irq = irq_create_mapping(port->event_domain,
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EVENT_LOCAL_PM_MSI_INT_MSI);
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@ -946,10 +951,10 @@ static int mc_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp
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return -ENXIO;
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/* Plug the MSI chained handler */
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irq_set_chained_handler_and_data(msi_irq, mc_handle_msi, port);
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irq_set_chained_handler_and_data(msi_irq, plda_handle_msi, port);
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/* Plug the main event chained handler */
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irq_set_chained_handler_and_data(irq, mc_handle_event, port);
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irq_set_chained_handler_and_data(irq, plda_handle_event, port);
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return 0;
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}
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@ -976,7 +981,7 @@ static int mc_platform_init(struct pci_config_window *cfg)
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return ret;
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/* Address translation is up; safe to enable interrupts */
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ret = mc_init_interrupts(pdev, &port->plda);
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ret = plda_init_interrupts(pdev, &port->plda);
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if (ret)
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return ret;
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