/* * Keystone PCI Controller's common includes * * Copyright (C) 2013-2014 Texas Instruments., Ltd. * http://www.ti.com * * Author: Murali Karicheri <m-karicheri2@ti.com> * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #define MAX_LEGACY_IRQS 4 #define MAX_MSI_HOST_IRQS 8 #define MAX_LEGACY_HOST_IRQS 4 struct keystone_pcie { struct pcie_port pp; /* pp.dbi_base is DT 0th res */ struct clk *clk; /* PCI Device ID */ u32 device_id; int num_legacy_host_irqs; int legacy_host_irqs[MAX_LEGACY_HOST_IRQS]; struct device_node *legacy_intc_np; int num_msi_host_irqs; int msi_host_irqs[MAX_MSI_HOST_IRQS]; struct device_node *msi_intc_np; struct irq_domain *legacy_irq_domain; struct device_node *np; int error_irq; /* Application register space */ void __iomem *va_app_base; /* DT 1st resource */ struct resource app; }; /* Keystone DW specific MSI controller APIs/definitions */ void ks_dw_pcie_handle_msi_irq(struct keystone_pcie *ks_pcie, int offset); phys_addr_t ks_dw_pcie_get_msi_addr(struct pcie_port *pp); /* Keystone specific PCI controller APIs */ void ks_dw_pcie_enable_legacy_irqs(struct keystone_pcie *ks_pcie); void ks_dw_pcie_handle_legacy_irq(struct keystone_pcie *ks_pcie, int offset); void ks_dw_pcie_enable_error_irq(struct keystone_pcie *ks_pcie); irqreturn_t ks_dw_pcie_handle_error_irq(struct keystone_pcie *ks_pcie); int ks_dw_pcie_host_init(struct keystone_pcie *ks_pcie, struct device_node *msi_intc_np); int ks_dw_pcie_wr_other_conf(struct pcie_port *pp, struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val); int ks_dw_pcie_rd_other_conf(struct pcie_port *pp, struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val); void ks_dw_pcie_setup_rc_app_regs(struct keystone_pcie *ks_pcie); int ks_dw_pcie_link_up(struct pcie_port *pp); void ks_dw_pcie_initiate_link_train(struct keystone_pcie *ks_pcie); void ks_dw_pcie_msi_set_irq(struct pcie_port *pp, int irq); void ks_dw_pcie_msi_clear_irq(struct pcie_port *pp, int irq); void ks_dw_pcie_v3_65_scan_bus(struct pcie_port *pp); int ks_dw_pcie_msi_host_init(struct pcie_port *pp, struct msi_controller *chip); |