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