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| author | Shawn Lin <shawn.lin@rock-chips.com> | 2018-05-31 04:12:37 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2018-06-08 15:50:11 +0300 |
| commit | 6e0832fa432ec99c94caee733c8f5851cf85560b (patch) | |
| tree | c4326f9e2d8ff1a6cb17e959fc5268c9e577ca94 /drivers/pci/controller/dwc/pci-keystone.h | |
| parent | 3a3869f1c443383ef8354ffa0e5fb8df65d8b549 (diff) | |
| download | linux-6e0832fa432ec99c94caee733c8f5851cf85560b.tar.xz | |
PCI: Collect all native drivers under drivers/pci/controller/
Native PCI drivers for root complex devices were originally all in
drivers/pci/host/. Some of these devices can also be operated in endpoint
mode. Drivers for endpoint mode didn't seem to fit in the "host"
directory, so we put both the root complex and endpoint drivers in
per-device directories, e.g., drivers/pci/dwc/, drivers/pci/cadence/, etc.
These per-device directories contain trivial Kconfig and Makefiles and
clutter drivers/pci/. Make a new drivers/pci/controllers/ directory and
collect all the device-specific drivers there.
No functional change intended.
Link: https://lkml.kernel.org/r/1520304202-232891-1-git-send-email-shawn.lin@rock-chips.com
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
[bhelgaas: changelog]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/controller/dwc/pci-keystone.h')
| -rw-r--r-- | drivers/pci/controller/dwc/pci-keystone.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/pci/controller/dwc/pci-keystone.h b/drivers/pci/controller/dwc/pci-keystone.h new file mode 100644 index 000000000000..8a13da391543 --- /dev/null +++ b/drivers/pci/controller/dwc/pci-keystone.h @@ -0,0 +1,57 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Keystone PCI Controller's common includes + * + * Copyright (C) 2013-2014 Texas Instruments., Ltd. + * http://www.ti.com + * + * Author: Murali Karicheri <m-karicheri2@ti.com> + */ + +#define MAX_MSI_HOST_IRQS 8 + +struct keystone_pcie { + struct dw_pcie *pci; + struct clk *clk; + /* PCI Device ID */ + u32 device_id; + int num_legacy_host_irqs; + int legacy_host_irqs[PCI_NUM_INTX]; + 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); +void ks_dw_pcie_initiate_link_train(struct keystone_pcie *ks_pcie); +void ks_dw_pcie_msi_irq_ack(int i, struct pcie_port *pp); +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); +int ks_dw_pcie_link_up(struct dw_pcie *pci); |