1 /* 2 * Keystone PCI Controller's common includes 3 * 4 * Copyright (C) 2013-2014 Texas Instruments., Ltd. 5 * http://www.ti.com 6 * 7 * Author: Murali Karicheri <m-karicheri2@ti.com> 8 * 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. 13 */ 14 15 #define MAX_LEGACY_IRQS 4 16 #define MAX_MSI_HOST_IRQS 8 17 #define MAX_LEGACY_HOST_IRQS 4 18 19 struct keystone_pcie { 20 struct clk *clk; 21 struct pcie_port pp; 22 /* PCI Device ID */ 23 u32 device_id; 24 int num_legacy_host_irqs; 25 int legacy_host_irqs[MAX_LEGACY_HOST_IRQS]; 26 struct device_node *legacy_intc_np; 27 28 int num_msi_host_irqs; 29 int msi_host_irqs[MAX_MSI_HOST_IRQS]; 30 struct device_node *msi_intc_np; 31 struct irq_domain *legacy_irq_domain; 32 33 /* Application register space */ 34 void __iomem *va_app_base; 35 struct resource app; 36 }; 37 38 /* Keystone DW specific MSI controller APIs/definitions */ 39 void ks_dw_pcie_handle_msi_irq(struct keystone_pcie *ks_pcie, int offset); 40 phys_addr_t ks_dw_pcie_get_msi_addr(struct pcie_port *pp); 41 42 /* Keystone specific PCI controller APIs */ 43 void ks_dw_pcie_enable_legacy_irqs(struct keystone_pcie *ks_pcie); 44 void ks_dw_pcie_handle_legacy_irq(struct keystone_pcie *ks_pcie, int offset); 45 int ks_dw_pcie_host_init(struct keystone_pcie *ks_pcie, 46 struct device_node *msi_intc_np); 47 int ks_dw_pcie_wr_other_conf(struct pcie_port *pp, struct pci_bus *bus, 48 unsigned int devfn, int where, int size, u32 val); 49 int ks_dw_pcie_rd_other_conf(struct pcie_port *pp, struct pci_bus *bus, 50 unsigned int devfn, int where, int size, u32 *val); 51 void ks_dw_pcie_setup_rc_app_regs(struct keystone_pcie *ks_pcie); 52 int ks_dw_pcie_link_up(struct pcie_port *pp); 53 void ks_dw_pcie_initiate_link_train(struct keystone_pcie *ks_pcie); 54 void ks_dw_pcie_msi_set_irq(struct pcie_port *pp, int irq); 55 void ks_dw_pcie_msi_clear_irq(struct pcie_port *pp, int irq); 56 void ks_dw_pcie_v3_65_scan_bus(struct pcie_port *pp); 57 int ks_dw_pcie_msi_host_init(struct pcie_port *pp, 58 struct msi_controller *chip); 59