diff options
Diffstat (limited to 'drivers/pci/dwc/pci-keystone.h')
| -rw-r--r-- | drivers/pci/dwc/pci-keystone.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/drivers/pci/dwc/pci-keystone.h b/drivers/pci/dwc/pci-keystone.h new file mode 100644 index 000000000000..bc54bafda068 --- /dev/null +++ b/drivers/pci/dwc/pci-keystone.h @@ -0,0 +1,63 @@ +/* + * Keystone PCI Controller's common includes + * + * Copyright (C) 2013-2014 Texas Instruments., Ltd. + * http://www.ti.com + * + * Author: Murali Karicheri <m-karicheri2@ti.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. + */ + +#define MAX_LEGACY_IRQS 4 +#define MAX_MSI_HOST_IRQS 8 +#define MAX_LEGACY_HOST_IRQS 4 + +struct keystone_pcie { + struct pcie_port pp; /* pp.dbi_base is DT 0th res */ + struct clk *clk; + /* PCI Device ID */ + u32 device_id; + int num_legacy_host_irqs; + int legacy_host_irqs[MAX_LEGACY_HOST_IRQS]; + struct device_node *legacy_intc_np; + + int num_msi_host_irqs; + int msi_host_irqs[MAX_MSI_HOST_IRQS]; + struct device_node *msi_intc_np; + struct irq_domain *legacy_irq_domain; + struct device_node *np; + + int error_irq; + + /* Application register space */ + void __iomem *va_app_base; /* DT 1st resource */ + struct resource app; +}; + +/* Keystone DW specific MSI controller APIs/definitions */ +void ks_dw_pcie_handle_msi_irq(struct keystone_pcie *ks_pcie, int offset); +phys_addr_t ks_dw_pcie_get_msi_addr(struct pcie_port *pp); + +/* Keystone specific PCI controller APIs */ +void ks_dw_pcie_enable_legacy_irqs(struct keystone_pcie *ks_pcie); +void ks_dw_pcie_handle_legacy_irq(struct keystone_pcie *ks_pcie, int offset); +void ks_dw_pcie_enable_error_irq(struct keystone_pcie *ks_pcie); +irqreturn_t ks_dw_pcie_handle_error_irq(struct keystone_pcie *ks_pcie); +int ks_dw_pcie_host_init(struct keystone_pcie *ks_pcie, + struct device_node *msi_intc_np); +int ks_dw_pcie_wr_other_conf(struct pcie_port *pp, struct pci_bus *bus, + unsigned int devfn, int where, int size, u32 val); +int ks_dw_pcie_rd_other_conf(struct pcie_port *pp, struct pci_bus *bus, + unsigned int devfn, int where, int size, u32 *val); +void ks_dw_pcie_setup_rc_app_regs(struct keystone_pcie *ks_pcie); +int ks_dw_pcie_link_up(struct pcie_port *pp); +void ks_dw_pcie_initiate_link_train(struct keystone_pcie *ks_pcie); +void ks_dw_pcie_msi_set_irq(struct pcie_port *pp, int irq); +void ks_dw_pcie_msi_clear_irq(struct pcie_port *pp, int irq); +void ks_dw_pcie_v3_65_scan_bus(struct pcie_port *pp); +int ks_dw_pcie_msi_host_init(struct pcie_port *pp, + struct msi_controller *chip); |