mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 16:29:59 +00:00
90e9cd50f7
The PCI Express port driver should not attempt to register service devices that require the ability to generate interrupts if generating interrupts is not possible. Namely, if the port has no interrupt pin configured and we cannot set up MSI or MSI-X for it, there is no way it can generate interrupts and in such a case the port services that rely on interrupts (PME, PCIe HP, AER) should not be enabled for it. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
80 lines
2.5 KiB
C
80 lines
2.5 KiB
C
/*
|
|
* File: pcieport_if.h
|
|
* Purpose: PCI Express Port Bus Driver's IF Data Structure
|
|
*
|
|
* Copyright (C) 2004 Intel
|
|
* Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
|
|
*/
|
|
|
|
#ifndef _PCIEPORT_IF_H_
|
|
#define _PCIEPORT_IF_H_
|
|
|
|
/* Port Type */
|
|
#define PCIE_RC_PORT 4 /* Root port of RC */
|
|
#define PCIE_SW_UPSTREAM_PORT 5 /* Upstream port of Switch */
|
|
#define PCIE_SW_DOWNSTREAM_PORT 6 /* Downstream port of Switch */
|
|
#define PCIE_ANY_PORT 7
|
|
|
|
/* Service Type */
|
|
#define PCIE_PORT_SERVICE_PME 1 /* Power Management Event */
|
|
#define PCIE_PORT_SERVICE_AER 2 /* Advanced Error Reporting */
|
|
#define PCIE_PORT_SERVICE_HP 4 /* Native Hotplug */
|
|
#define PCIE_PORT_SERVICE_VC 8 /* Virtual Channel */
|
|
|
|
/* Root/Upstream/Downstream Port's Interrupt Mode */
|
|
#define PCIE_PORT_NO_IRQ (-1)
|
|
#define PCIE_PORT_INTx_MODE 0
|
|
#define PCIE_PORT_MSI_MODE 1
|
|
#define PCIE_PORT_MSIX_MODE 2
|
|
|
|
struct pcie_port_service_id {
|
|
__u32 vendor, device; /* Vendor and device ID or PCI_ANY_ID*/
|
|
__u32 subvendor, subdevice; /* Subsystem ID's or PCI_ANY_ID */
|
|
__u32 class, class_mask; /* (class,subclass,prog-if) triplet */
|
|
__u32 port_type, service_type; /* Port Entity */
|
|
kernel_ulong_t driver_data;
|
|
};
|
|
|
|
struct pcie_device {
|
|
int irq; /* Service IRQ/MSI/MSI-X Vector */
|
|
struct pcie_port_service_id id; /* Service ID */
|
|
struct pci_dev *port; /* Root/Upstream/Downstream Port */
|
|
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;
|
|
}
|
|
|
|
static inline void* get_service_data(struct pcie_device *dev)
|
|
{
|
|
return dev->priv_data;
|
|
}
|
|
|
|
struct pcie_port_service_driver {
|
|
const char *name;
|
|
int (*probe) (struct pcie_device *dev,
|
|
const struct pcie_port_service_id *id);
|
|
void (*remove) (struct pcie_device *dev);
|
|
int (*suspend) (struct pcie_device *dev, pm_message_t state);
|
|
int (*resume) (struct pcie_device *dev);
|
|
|
|
/* Service Error Recovery Handler */
|
|
struct pci_error_handlers *err_handler;
|
|
|
|
/* Link Reset Capability - AER service driver specific */
|
|
pci_ers_result_t (*reset_link) (struct pci_dev *dev);
|
|
|
|
const struct pcie_port_service_id *id_table;
|
|
struct device_driver driver;
|
|
};
|
|
#define to_service_driver(d) \
|
|
container_of(d, struct pcie_port_service_driver, driver)
|
|
|
|
extern int pcie_port_service_register(struct pcie_port_service_driver *new);
|
|
extern void pcie_port_service_unregister(struct pcie_port_service_driver *new);
|
|
|
|
#endif /* _PCIEPORT_IF_H_ */
|