drivers/pci/dwc/pci-keystone.h

   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
  13 struct 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 */
  36 void ks_dw_pcie_handle_msi_irq(struct keystone_pcie *ks_pcie, int offset);
  37 phys_addr_t ks_dw_pcie_get_msi_addr(struct pcie_port *pp);
  38
  39 /* Keystone specific PCI controller APIs */
  40 void ks_dw_pcie_enable_legacy_irqs(struct keystone_pcie *ks_pcie);
  41 void ks_dw_pcie_handle_legacy_irq(struct keystone_pcie *ks_pcie, int offset);
  42 void ks_dw_pcie_enable_error_irq(struct keystone_pcie *ks_pcie);
  43 irqreturn_t ks_dw_pcie_handle_error_irq(struct keystone_pcie *ks_pcie);
  44 int  ks_dw_pcie_host_init(struct keystone_pcie *ks_pcie,
  45                         struct device_node *msi_intc_np);
  46 int ks_dw_pcie_wr_other_conf(struct pcie_port *pp, struct pci_bus *bus,
  47                 unsigned int devfn, int where, int size, u32 val);
  48 int ks_dw_pcie_rd_other_conf(struct pcie_port *pp, struct pci_bus *bus,
  49                 unsigned int devfn, int where, int size, u32 *val);
  50 void ks_dw_pcie_setup_rc_app_regs(struct keystone_pcie *ks_pcie);
  51 void ks_dw_pcie_initiate_link_train(struct keystone_pcie *ks_pcie);
  52 void ks_dw_pcie_msi_set_irq(struct pcie_port *pp, int irq);
  53 void ks_dw_pcie_msi_clear_irq(struct pcie_port *pp, int irq);
  54 void ks_dw_pcie_v3_65_scan_bus(struct pcie_port *pp);
  55 int ks_dw_pcie_msi_host_init(struct pcie_port *pp,
  56                 struct msi_controller *chip);
  57 int ks_dw_pcie_link_up(struct dw_pcie *pci);