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8bfd4e023f
Checkpatch found some extra warnings and errors. This mega patch fixes them all in one big swoop. We also spruce up the pcistub_ids to use DEFINE_PCI_DEVICE_TABLE macro (suggested by Jan Beulich). Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
134 lines
4.1 KiB
C
134 lines
4.1 KiB
C
/*
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* PCI Backend Common Data Structures & Function Declarations
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*
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* Author: Ryan Wilson <hap9@epoch.ncsc.mil>
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*/
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#ifndef __XEN_PCIBACK_H__
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#define __XEN_PCIBACK_H__
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#include <linux/pci.h>
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#include <linux/interrupt.h>
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#include <xen/xenbus.h>
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#include <linux/list.h>
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#include <linux/spinlock.h>
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#include <linux/workqueue.h>
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#include <linux/atomic.h>
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#include <xen/interface/io/pciif.h>
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struct pci_dev_entry {
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struct list_head list;
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struct pci_dev *dev;
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};
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#define _PDEVF_op_active (0)
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#define PDEVF_op_active (1<<(_PDEVF_op_active))
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#define _PCIB_op_pending (1)
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#define PCIB_op_pending (1<<(_PCIB_op_pending))
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struct pciback_device {
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void *pci_dev_data;
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spinlock_t dev_lock;
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struct xenbus_device *xdev;
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struct xenbus_watch be_watch;
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u8 be_watching;
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int evtchn_irq;
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struct xen_pci_sharedinfo *sh_info;
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unsigned long flags;
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struct work_struct op_work;
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};
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struct pciback_dev_data {
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struct list_head config_fields;
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int permissive;
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int warned_on_write;
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};
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/* Used by XenBus and pciback_ops.c */
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extern wait_queue_head_t aer_wait_queue;
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extern struct workqueue_struct *pciback_wq;
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/* Used by pcistub.c and conf_space_quirks.c */
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extern struct list_head pciback_quirks;
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/* Get/Put PCI Devices that are hidden from the PCI Backend Domain */
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struct pci_dev *pcistub_get_pci_dev_by_slot(struct pciback_device *pdev,
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int domain, int bus,
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int slot, int func);
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struct pci_dev *pcistub_get_pci_dev(struct pciback_device *pdev,
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struct pci_dev *dev);
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void pcistub_put_pci_dev(struct pci_dev *dev);
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/* Ensure a device is turned off or reset */
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void pciback_reset_device(struct pci_dev *pdev);
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/* Access a virtual configuration space for a PCI device */
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int pciback_config_init(void);
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int pciback_config_init_dev(struct pci_dev *dev);
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void pciback_config_free_dyn_fields(struct pci_dev *dev);
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void pciback_config_reset_dev(struct pci_dev *dev);
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void pciback_config_free_dev(struct pci_dev *dev);
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int pciback_config_read(struct pci_dev *dev, int offset, int size,
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u32 *ret_val);
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int pciback_config_write(struct pci_dev *dev, int offset, int size, u32 value);
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/* Handle requests for specific devices from the frontend */
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typedef int (*publish_pci_dev_cb) (struct pciback_device *pdev,
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unsigned int domain, unsigned int bus,
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unsigned int devfn, unsigned int devid);
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typedef int (*publish_pci_root_cb) (struct pciback_device *pdev,
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unsigned int domain, unsigned int bus);
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int pciback_add_pci_dev(struct pciback_device *pdev, struct pci_dev *dev,
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int devid, publish_pci_dev_cb publish_cb);
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void pciback_release_pci_dev(struct pciback_device *pdev, struct pci_dev *dev);
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struct pci_dev *pciback_get_pci_dev(struct pciback_device *pdev,
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unsigned int domain, unsigned int bus,
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unsigned int devfn);
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/**
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* Add for domain0 PCIE-AER handling. Get guest domain/bus/devfn in pciback
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* before sending aer request to pcifront, so that guest could identify
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* device, coopearte with pciback to finish aer recovery job if device driver
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* has the capability
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*/
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int pciback_get_pcifront_dev(struct pci_dev *pcidev,
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struct pciback_device *pdev,
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unsigned int *domain, unsigned int *bus,
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unsigned int *devfn);
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int pciback_init_devices(struct pciback_device *pdev);
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int pciback_publish_pci_roots(struct pciback_device *pdev,
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publish_pci_root_cb cb);
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void pciback_release_devices(struct pciback_device *pdev);
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/* Handles events from front-end */
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irqreturn_t pciback_handle_event(int irq, void *dev_id);
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void pciback_do_op(struct work_struct *data);
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int pciback_xenbus_register(void);
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void pciback_xenbus_unregister(void);
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#ifdef CONFIG_PCI_MSI
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int pciback_enable_msi(struct pciback_device *pdev,
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struct pci_dev *dev, struct xen_pci_op *op);
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int pciback_disable_msi(struct pciback_device *pdev,
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struct pci_dev *dev, struct xen_pci_op *op);
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int pciback_enable_msix(struct pciback_device *pdev,
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struct pci_dev *dev, struct xen_pci_op *op);
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int pciback_disable_msix(struct pciback_device *pdev,
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struct pci_dev *dev, struct xen_pci_op *op);
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#endif
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extern int verbose_request;
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void test_and_schedule_op(struct pciback_device *pdev);
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#endif
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