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- /*
- * Synopsys Designware PCIe host controller driver
- *
- * Copyright (C) 2013 Samsung Electronics Co., Ltd.
- * http://www.samsung.com
- *
- * Author: Jingoo Han <jg1.han@samsung.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.
- */
- #ifndef _PCIE_DESIGNWARE_H
- #define _PCIE_DESIGNWARE_H
- /*
- * Maximum number of MSI IRQs can be 256 per controller. But keep
- * it 32 as of now. Probably we will never need more than 32. If needed,
- * then increment it in multiple of 32.
- */
- #define MAX_MSI_IRQS 32
- #define MAX_MSI_CTRLS (MAX_MSI_IRQS / 32)
- struct pcie_port {
- struct device *dev;
- u8 root_bus_nr;
- void __iomem *dbi_base;
- u64 cfg0_base;
- void __iomem *va_cfg0_base;
- u32 cfg0_size;
- u64 cfg1_base;
- void __iomem *va_cfg1_base;
- u32 cfg1_size;
- resource_size_t io_base;
- phys_addr_t io_bus_addr;
- u32 io_size;
- u64 mem_base;
- phys_addr_t mem_bus_addr;
- u32 mem_size;
- struct resource *cfg;
- struct resource *io;
- struct resource *mem;
- struct resource *busn;
- int irq;
- u32 lanes;
- struct pcie_host_ops *ops;
- int msi_irq;
- struct irq_domain *irq_domain;
- unsigned long msi_data;
- DECLARE_BITMAP(msi_irq_in_use, MAX_MSI_IRQS);
- };
- struct pcie_host_ops {
- void (*readl_rc)(struct pcie_port *pp,
- void __iomem *dbi_base, u32 *val);
- void (*writel_rc)(struct pcie_port *pp,
- u32 val, void __iomem *dbi_base);
- int (*rd_own_conf)(struct pcie_port *pp, int where, int size, u32 *val);
- int (*wr_own_conf)(struct pcie_port *pp, int where, int size, u32 val);
- int (*rd_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
- unsigned int devfn, int where, int size, u32 *val);
- int (*wr_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
- unsigned int devfn, int where, int size, u32 val);
- int (*link_up)(struct pcie_port *pp);
- void (*host_init)(struct pcie_port *pp);
- void (*msi_set_irq)(struct pcie_port *pp, int irq);
- void (*msi_clear_irq)(struct pcie_port *pp, int irq);
- phys_addr_t (*get_msi_addr)(struct pcie_port *pp);
- u32 (*get_msi_data)(struct pcie_port *pp, int pos);
- void (*scan_bus)(struct pcie_port *pp);
- int (*msi_host_init)(struct pcie_port *pp, struct msi_controller *chip);
- };
- int dw_pcie_cfg_read(void __iomem *addr, int size, u32 *val);
- int dw_pcie_cfg_write(void __iomem *addr, int size, u32 val);
- irqreturn_t dw_handle_msi_irq(struct pcie_port *pp);
- void dw_pcie_msi_init(struct pcie_port *pp);
- int dw_pcie_link_up(struct pcie_port *pp);
- void dw_pcie_setup_rc(struct pcie_port *pp);
- int dw_pcie_host_init(struct pcie_port *pp);
- #endif /* _PCIE_DESIGNWARE_H */
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