1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Keystone PCI Controller's common includes
 4 *
 5 * Copyright (C) 2013-2014 Texas Instruments., Ltd.
 6 *		http://www.ti.com
 7 *
 8 * Author: Murali Karicheri <m-karicheri2@ti.com>
 9 */
10
11#define MAX_MSI_HOST_IRQS		8
12
13struct keystone_pcie {
14	struct dw_pcie		*pci;
15	struct	clk		*clk;
16	/* PCI Device ID */
17	u32			device_id;
18	int			num_legacy_host_irqs;
19	int			legacy_host_irqs[PCI_NUM_INTX];
20	struct			device_node *legacy_intc_np;
21
22	int			num_msi_host_irqs;
23	int			msi_host_irqs[MAX_MSI_HOST_IRQS];
24	struct			device_node *msi_intc_np;
25	struct irq_domain	*legacy_irq_domain;
26	struct device_node	*np;
27
28	int error_irq;
29
30	/* Application register space */
31	void __iomem		*va_app_base;	/* DT 1st resource */
32	struct resource		app;
33};
34
35/* Keystone DW specific MSI controller APIs/definitions */
36void ks_dw_pcie_handle_msi_irq(struct keystone_pcie *ks_pcie, int offset);
37phys_addr_t ks_dw_pcie_get_msi_addr(struct pcie_port *pp);
38
39/* Keystone specific PCI controller APIs */
40void ks_dw_pcie_enable_legacy_irqs(struct keystone_pcie *ks_pcie);
41void ks_dw_pcie_handle_legacy_irq(struct keystone_pcie *ks_pcie, int offset);
42void ks_dw_pcie_enable_error_irq(struct keystone_pcie *ks_pcie);
43irqreturn_t ks_dw_pcie_handle_error_irq(struct keystone_pcie *ks_pcie);
44int  ks_dw_pcie_host_init(struct keystone_pcie *ks_pcie,
45			struct device_node *msi_intc_np);
46int ks_dw_pcie_wr_other_conf(struct pcie_port *pp, struct pci_bus *bus,
47		unsigned int devfn, int where, int size, u32 val);
48int ks_dw_pcie_rd_other_conf(struct pcie_port *pp, struct pci_bus *bus,
49		unsigned int devfn, int where, int size, u32 *val);
50void ks_dw_pcie_setup_rc_app_regs(struct keystone_pcie *ks_pcie);
51void ks_dw_pcie_initiate_link_train(struct keystone_pcie *ks_pcie);
52void ks_dw_pcie_msi_irq_ack(int i, struct pcie_port *pp);
53void ks_dw_pcie_msi_set_irq(struct pcie_port *pp, int irq);
54void ks_dw_pcie_msi_clear_irq(struct pcie_port *pp, int irq);
55void ks_dw_pcie_v3_65_scan_bus(struct pcie_port *pp);
56int ks_dw_pcie_msi_host_init(struct pcie_port *pp);
57int ks_dw_pcie_link_up(struct dw_pcie *pci);