Release 4.17 drivers/pci/pcie/portdrv.h
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Purpose: PCI Express Port Bus Driver's Internal Data Structures
*
* Copyright (C) 2004 Intel
* Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
*/
#ifndef _PORTDRV_H_
#define _PORTDRV_H_
#include <linux/compiler.h>
extern bool pcie_ports_native;
/* Service Type */
#define PCIE_PORT_SERVICE_PME_SHIFT 0
/* Power Management Event */
#define PCIE_PORT_SERVICE_PME (1 << PCIE_PORT_SERVICE_PME_SHIFT)
#define PCIE_PORT_SERVICE_AER_SHIFT 1
/* Advanced Error Reporting */
#define PCIE_PORT_SERVICE_AER (1 << PCIE_PORT_SERVICE_AER_SHIFT)
#define PCIE_PORT_SERVICE_HP_SHIFT 2
/* Native Hotplug */
#define PCIE_PORT_SERVICE_HP (1 << PCIE_PORT_SERVICE_HP_SHIFT)
#define PCIE_PORT_SERVICE_DPC_SHIFT 3
/* Downstream Port Containment */
#define PCIE_PORT_SERVICE_DPC (1 << PCIE_PORT_SERVICE_DPC_SHIFT)
#define PCIE_PORT_DEVICE_MAXSERVICES 4
/* Port Type */
#define PCIE_ANY_PORT (~0)
struct pcie_device {
int irq; /* Service IRQ/MSI/MSI-X Vector */
struct pci_dev *port; /* Root/Upstream/Downstream Port */
u32 service; /* Port service this device represents */
void *priv_data; /* Service Private Data */
struct device device; /* Generic Device Interface */
};
#define to_pcie_device(d) container_of(d, struct pcie_device, device)
static inline void set_service_data(struct pcie_device *dev, void *data)
{
dev->priv_data = data;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Björn Helgaas | 22 | 100.00% | 1 | 100.00% |
| Total | 22 | 100.00% | 1 | 100.00% |
static inline void *get_service_data(struct pcie_device *dev)
{
return dev->priv_data;
}
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| Björn Helgaas | 18 | 100.00% | 1 | 100.00% |
| Total | 18 | 100.00% | 1 | 100.00% |
struct pcie_port_service_driver {
const char *name;
int (*probe) (struct pcie_device *dev);
void (*remove) (struct pcie_device *dev);
int (*suspend) (struct pcie_device *dev);
int (*resume) (struct pcie_device *dev);
/* Device driver may resume normal operations */
void (*error_resume)(struct pci_dev *dev);
/* Link Reset Capability - AER service driver specific */
pci_ers_result_t (*reset_link) (struct pci_dev *dev);
int port_type; /* Type of the port this driver can handle */
u32 service; /* Port service this device represents */
struct device_driver driver;
};
#define to_service_driver(d) \
container_of(d, struct pcie_port_service_driver, driver)
int pcie_port_service_register(struct pcie_port_service_driver *new);
void pcie_port_service_unregister(struct pcie_port_service_driver *new);
/*
* The PCIe Capability Interrupt Message Number (PCIe r3.1, sec 7.8.2) must
* be one of the first 32 MSI-X entries. Per PCI r3.0, sec 6.8.3.1, MSI
* supports a maximum of 32 vectors per function.
*/
#define PCIE_PORT_MAX_MSI_ENTRIES 32
#define get_descriptor_id(type, service) (((type - 4) << 8) | service)
extern struct bus_type pcie_port_bus_type;
int pcie_port_device_register(struct pci_dev *dev);
#ifdef CONFIG_PM
int pcie_port_device_suspend(struct device *dev);
int pcie_port_device_resume(struct device *dev);
#endif
void pcie_port_device_remove(struct pci_dev *dev);
int __must_check pcie_port_bus_register(void);
void pcie_port_bus_unregister(void);
struct pci_dev;
#ifdef CONFIG_PCIE_PME
extern bool pcie_pme_msi_disabled;
static inline void pcie_pme_disable_msi(void)
{
pcie_pme_msi_disabled = true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 13 | 100.00% | 1 | 100.00% |
| Total | 13 | 100.00% | 1 | 100.00% |
static inline bool pcie_pme_no_msi(void)
{
return pcie_pme_msi_disabled;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 12 | 100.00% | 1 | 100.00% |
| Total | 12 | 100.00% | 1 | 100.00% |
void pcie_pme_interrupt_enable(struct pci_dev *dev, bool enable);
#else /* !CONFIG_PCIE_PME */
static inline void pcie_pme_disable_msi(void) {}
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| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 8 | 100.00% | 1 | 100.00% |
| Total | 8 | 100.00% | 1 | 100.00% |
static inline bool pcie_pme_no_msi(void) { return false; }
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 12 | 100.00% | 1 | 100.00% |
| Total | 12 | 100.00% | 1 | 100.00% |
static inline void pcie_pme_interrupt_enable(struct pci_dev *dev, bool en) {}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Rafael J. Wysocki | 14 | 100.00% | 1 | 100.00% |
| Total | 14 | 100.00% | 1 | 100.00% |
#endif /* !CONFIG_PCIE_PME */
#endif /* _PORTDRV_H_ */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Björn Helgaas | 246 | 58.29% | 5 | 29.41% |
| Rafael J. Wysocki | 90 | 21.33% | 4 | 23.53% |
| Tom L. Nguyen | 75 | 17.77% | 2 | 11.76% |
| Andrew Morton | 4 | 0.95% | 1 | 5.88% |
| Gabriele Paoloni | 2 | 0.47% | 1 | 5.88% |
| MUNEDA Takahiro | 2 | 0.47% | 1 | 5.88% |
| Randy Dunlap | 1 | 0.24% | 1 | 5.88% |
| Keith Busch | 1 | 0.24% | 1 | 5.88% |
| Greg Kroah-Hartman | 1 | 0.24% | 1 | 5.88% |
| Total | 422 | 100.00% | 17 | 100.00% |
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