2 * Synopsys Designware PCIe host controller driver
4 * Copyright (C) 2013 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com
7 * Author: Jingoo Han <jg1.han@samsung.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
14 #ifndef _PCIE_DESIGNWARE_H
15 #define _PCIE_DESIGNWARE_H
18 * Maximum number of MSI IRQs can be 256 per controller. But keep
19 * it 32 as of now. Probably we will never need more than 32. If needed,
20 * then increment it in multiple of 32.
22 #define MAX_MSI_IRQS 32
23 #define MAX_MSI_CTRLS (MAX_MSI_IRQS / 32)
28 void __iomem *dbi_base;
30 void __iomem *va_cfg0_base;
33 void __iomem *va_cfg1_base;
35 resource_size_t io_base;
36 phys_addr_t io_bus_addr;
39 phys_addr_t mem_bus_addr;
44 struct resource *busn;
48 struct pcie_host_ops *ops;
50 struct irq_domain *irq_domain;
51 unsigned long msi_data;
52 u8 iatu_unroll_enabled;
53 DECLARE_BITMAP(msi_irq_in_use, MAX_MSI_IRQS);
56 struct pcie_host_ops {
57 u32 (*readl_rc)(struct pcie_port *pp, u32 reg);
58 void (*writel_rc)(struct pcie_port *pp, u32 reg, u32 val);
59 int (*rd_own_conf)(struct pcie_port *pp, int where, int size, u32 *val);
60 int (*wr_own_conf)(struct pcie_port *pp, int where, int size, u32 val);
61 int (*rd_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
62 unsigned int devfn, int where, int size, u32 *val);
63 int (*wr_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
64 unsigned int devfn, int where, int size, u32 val);
65 int (*link_up)(struct pcie_port *pp);
66 void (*host_init)(struct pcie_port *pp);
67 void (*msi_set_irq)(struct pcie_port *pp, int irq);
68 void (*msi_clear_irq)(struct pcie_port *pp, int irq);
69 phys_addr_t (*get_msi_addr)(struct pcie_port *pp);
70 u32 (*get_msi_data)(struct pcie_port *pp, int pos);
71 void (*scan_bus)(struct pcie_port *pp);
72 int (*msi_host_init)(struct pcie_port *pp, struct msi_controller *chip);
75 u32 dw_pcie_readl_rc(struct pcie_port *pp, u32 reg);
76 void dw_pcie_writel_rc(struct pcie_port *pp, u32 reg, u32 val);
77 int dw_pcie_cfg_read(void __iomem *addr, int size, u32 *val);
78 int dw_pcie_cfg_write(void __iomem *addr, int size, u32 val);
79 irqreturn_t dw_handle_msi_irq(struct pcie_port *pp);
80 void dw_pcie_msi_init(struct pcie_port *pp);
81 int dw_pcie_wait_for_link(struct pcie_port *pp);
82 int dw_pcie_link_up(struct pcie_port *pp);
83 void dw_pcie_setup_rc(struct pcie_port *pp);
84 int dw_pcie_host_init(struct pcie_port *pp);
86 #endif /* _PCIE_DESIGNWARE_H */