Merge remote-tracking branch 'remotes/awilliam/tags/vfio-update-20150923.0' into staging

ifeq ($(CONFIG_LINUX), y)

obj-$(CONFIG_SOFTMMU) += common.o

obj-$(CONFIG_PCI) += pci.o

obj-$(CONFIG_PCI) += pci.o pci-quirks.o

obj-$(CONFIG_SOFTMMU) += platform.o

obj-$(CONFIG_SOFTMMU) += calxeda-xgmac.o

endif

    int ret = 0;

    VFIODevice *vbasedev = region->vbasedev;

    if (vbasedev->allow_mmap && size && region->flags &

    if (!vbasedev->no_mmap && size && region->flags &

        VFIO_REGION_INFO_FLAG_MMAP) {

        int prot = 0;

/*

 * vfio based device assignment support - PCI devices

 *

 * Copyright Red Hat, Inc. 2012-2015

 *

 * Authors:

 *  Alex Williamson <alex.williamson@redhat.com>

 *

 * This work is licensed under the terms of the GNU GPL, version 2.  See

 * the COPYING file in the top-level directory.

 */

#ifndef HW_VFIO_VFIO_PCI_H

#define HW_VFIO_VFIO_PCI_H

#include "qemu-common.h"

#include "exec/memory.h"

#include "hw/pci/pci.h"

#include "hw/vfio/vfio-common.h"

#include "qemu/event_notifier.h"

#include "qemu/queue.h"

#include "qemu/timer.h"

#define PCI_ANY_ID (~0)

struct VFIOPCIDevice;

typedef struct VFIOQuirk {

    QLIST_ENTRY(VFIOQuirk) next;

    void *data;

    int nr_mem;

    MemoryRegion *mem;

} VFIOQuirk;

typedef struct VFIOBAR {

    VFIORegion region;

    bool ioport;

    bool mem64;

    QLIST_HEAD(, VFIOQuirk) quirks;

} VFIOBAR;

typedef struct VFIOVGARegion {

    MemoryRegion mem;

    off_t offset;

    int nr;

    QLIST_HEAD(, VFIOQuirk) quirks;

} VFIOVGARegion;

typedef struct VFIOVGA {

    off_t fd_offset;

    int fd;

    VFIOVGARegion region[QEMU_PCI_VGA_NUM_REGIONS];

} VFIOVGA;

typedef struct VFIOINTx {

    bool pending; /* interrupt pending */

    bool kvm_accel; /* set when QEMU bypass through KVM enabled */

    uint8_t pin; /* which pin to pull for qemu_set_irq */

    EventNotifier interrupt; /* eventfd triggered on interrupt */

    EventNotifier unmask; /* eventfd for unmask on QEMU bypass */

    PCIINTxRoute route; /* routing info for QEMU bypass */

    uint32_t mmap_timeout; /* delay to re-enable mmaps after interrupt */

    QEMUTimer *mmap_timer; /* enable mmaps after periods w/o interrupts */

} VFIOINTx;

typedef struct VFIOMSIVector {

    /*

     * Two interrupt paths are configured per vector.  The first, is only used

     * for interrupts injected via QEMU.  This is typically the non-accel path,

     * but may also be used when we want QEMU to handle masking and pending

     * bits.  The KVM path bypasses QEMU and is therefore higher performance,

     * but requires masking at the device.  virq is used to track the MSI route

     * through KVM, thus kvm_interrupt is only available when virq is set to a

     * valid (>= 0) value.

     */

    EventNotifier interrupt;

    EventNotifier kvm_interrupt;

    struct VFIOPCIDevice *vdev; /* back pointer to device */

    int virq;

    bool use;

} VFIOMSIVector;

enum {

    VFIO_INT_NONE = 0,

    VFIO_INT_INTx = 1,

    VFIO_INT_MSI  = 2,

    VFIO_INT_MSIX = 3,

};

/* Cache of MSI-X setup plus extra mmap and memory region for split BAR map */

typedef struct VFIOMSIXInfo {

    uint8_t table_bar;

    uint8_t pba_bar;

    uint16_t entries;

    uint32_t table_offset;

    uint32_t pba_offset;

    MemoryRegion mmap_mem;

    void *mmap;

} VFIOMSIXInfo;

typedef struct VFIOPCIDevice {

    PCIDevice pdev;

    VFIODevice vbasedev;

    VFIOINTx intx;

    unsigned int config_size;

    uint8_t *emulated_config_bits; /* QEMU emulated bits, little-endian */

    off_t config_offset; /* Offset of config space region within device fd */

    unsigned int rom_size;

    off_t rom_offset; /* Offset of ROM region within device fd */

    void *rom;

    int msi_cap_size;

    VFIOMSIVector *msi_vectors;

    VFIOMSIXInfo *msix;

    int nr_vectors; /* Number of MSI/MSIX vectors currently in use */

    int interrupt; /* Current interrupt type */

    VFIOBAR bars[PCI_NUM_REGIONS - 1]; /* No ROM */

    VFIOVGA vga; /* 0xa0000, 0x3b0, 0x3c0 */

    PCIHostDeviceAddress host;

    EventNotifier err_notifier;

    EventNotifier req_notifier;

    int (*resetfn)(struct VFIOPCIDevice *);

    uint32_t vendor_id;

    uint32_t device_id;

    uint32_t sub_vendor_id;

    uint32_t sub_device_id;

    uint32_t features;

#define VFIO_FEATURE_ENABLE_VGA_BIT 0

#define VFIO_FEATURE_ENABLE_VGA (1 << VFIO_FEATURE_ENABLE_VGA_BIT)

#define VFIO_FEATURE_ENABLE_REQ_BIT 1

#define VFIO_FEATURE_ENABLE_REQ (1 << VFIO_FEATURE_ENABLE_REQ_BIT)

    int32_t bootindex;

    uint8_t pm_cap;

    bool has_vga;

    bool pci_aer;

    bool req_enabled;

    bool has_flr;

    bool has_pm_reset;

    bool rom_read_failed;

    bool no_kvm_intx;

    bool no_kvm_msi;

    bool no_kvm_msix;

} VFIOPCIDevice;

uint32_t vfio_pci_read_config(PCIDevice *pdev, uint32_t addr, int len);

void vfio_pci_write_config(PCIDevice *pdev,

                           uint32_t addr, uint32_t val, int len);

uint64_t vfio_vga_read(void *opaque, hwaddr addr, unsigned size);

void vfio_vga_write(void *opaque, hwaddr addr, uint64_t data, unsigned size);

bool vfio_blacklist_opt_rom(VFIOPCIDevice *vdev);

void vfio_vga_quirk_setup(VFIOPCIDevice *vdev);

void vfio_vga_quirk_teardown(VFIOPCIDevice *vdev);

void vfio_vga_quirk_free(VFIOPCIDevice *vdev);

void vfio_bar_quirk_setup(VFIOPCIDevice *vdev, int nr);

void vfio_bar_quirk_teardown(VFIOPCIDevice *vdev, int nr);

void vfio_bar_quirk_free(VFIOPCIDevice *vdev, int nr);

void vfio_setup_resetfn_quirk(VFIOPCIDevice *vdev);

#endif /* HW_VFIO_VFIO_PCI_H */