[qemu.git] / hw / vfio / pci.h

/*
 * vfio based device assignment support - PCI devices
 *
 * Copyright Red Hat, Inc. 2012-2015
 *
 * Authors:
 *  Alex Williamson <[email protected]>
 *
 * 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 VFIOIOEventFD {
    QLIST_ENTRY(VFIOIOEventFD) next;
    MemoryRegion *mr;
    hwaddr addr;
    unsigned size;
    uint64_t data;
    EventNotifier e;
    VFIORegion *region;
    hwaddr region_addr;
    bool dynamic; /* Added runtime, removed on device reset */
    bool vfio;
} VFIOIOEventFD;

typedef struct VFIOQuirk {
    QLIST_ENTRY(VFIOQuirk) next;
    void *data;
    QLIST_HEAD(, VFIOIOEventFD) ioeventfds;
    int nr_mem;
    MemoryRegion *mem;
    void (*reset)(struct VFIOPCIDevice *vdev, struct VFIOQuirk *quirk);
} VFIOQuirk;

typedef struct VFIOBAR {
    VFIORegion region;
    MemoryRegion *mr;
    size_t size;
    uint8_t type;
    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 */
typedef struct VFIOMSIXInfo {
    uint8_t table_bar;
    uint8_t pba_bar;
    uint16_t entries;
    uint32_t table_offset;
    uint32_t pba_offset;
    unsigned long *pending;
} 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 */
    void *igd_opregion;
    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)
#define VFIO_FEATURE_ENABLE_IGD_OPREGION_BIT 2
#define VFIO_FEATURE_ENABLE_IGD_OPREGION \
                                (1 << VFIO_FEATURE_ENABLE_IGD_OPREGION_BIT)
    OnOffAuto display;
    int32_t bootindex;
    uint32_t igd_gms;
    OffAutoPCIBAR msix_relo;
    uint8_t pm_cap;
    uint8_t nv_gpudirect_clique;
    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;
    bool no_geforce_quirks;
    bool no_kvm_ioeventfd;
    bool no_vfio_ioeventfd;
    VFIODisplay *dpy;
} 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_exit(VFIOPCIDevice *vdev);
void vfio_vga_quirk_finalize(VFIOPCIDevice *vdev);
void vfio_bar_quirk_setup(VFIOPCIDevice *vdev, int nr);
void vfio_bar_quirk_exit(VFIOPCIDevice *vdev, int nr);
void vfio_bar_quirk_finalize(VFIOPCIDevice *vdev, int nr);
void vfio_setup_resetfn_quirk(VFIOPCIDevice *vdev);
int vfio_add_virt_caps(VFIOPCIDevice *vdev, Error **errp);
void vfio_quirk_reset(VFIOPCIDevice *vdev);

extern const PropertyInfo qdev_prop_nv_gpudirect_clique;

int vfio_populate_vga(VFIOPCIDevice *vdev, Error **errp);

int vfio_pci_igd_opregion_init(VFIOPCIDevice *vdev,
                               struct vfio_region_info *info,
                               Error **errp);

void vfio_display_reset(VFIOPCIDevice *vdev);
int vfio_display_probe(VFIOPCIDevice *vdev, Error **errp);
void vfio_display_finalize(VFIOPCIDevice *vdev);

#endif /* HW_VFIO_VFIO_PCI_H */
Commit	Line	Data
78f33d2b AW	1	/*
	2	* vfio based device assignment support - PCI devices
	3	*
	4	* Copyright Red Hat, Inc. 2012-2015
	5	*
	6	* Authors:
	7	* Alex Williamson <[email protected]>
	8	*
	9	* This work is licensed under the terms of the GNU GPL, version 2. See
	10	* the COPYING file in the top-level directory.
	11	*/
	12	#ifndef HW_VFIO_VFIO_PCI_H
	13	#define HW_VFIO_VFIO_PCI_H
	14
	15	#include "qemu-common.h"
	16	#include "exec/memory.h"
	17	#include "hw/pci/pci.h"
	18	#include "hw/vfio/vfio-common.h"
	19	#include "qemu/event_notifier.h"
	20	#include "qemu/queue.h"
	21	#include "qemu/timer.h"
	22
89dcccc5 AW	23	#define PCI_ANY_ID (~0)
89dcccc5 AW	24
78f33d2b AW	25	struct VFIOPCIDevice;
78f33d2b AW	26
c958c51d AW	27	typedef struct VFIOIOEventFD {
	28	QLIST_ENTRY(VFIOIOEventFD) next;
	29	MemoryRegion *mr;
	30	hwaddr addr;
	31	unsigned size;
	32	uint64_t data;
	33	EventNotifier e;
	34	VFIORegion *region;
	35	hwaddr region_addr;
	36	bool dynamic; /* Added runtime, removed on device reset */
2b1dbd0d	37	bool vfio;
c958c51d AW	38	} VFIOIOEventFD;
c958c51d AW	39
8c4f2348 AW	40	typedef struct VFIOQuirk {
	41	QLIST_ENTRY(VFIOQuirk) next;
	42	void *data;
c958c51d	43	QLIST_HEAD(, VFIOIOEventFD) ioeventfds;
8c4f2348 AW	44	int nr_mem;
8c4f2348 AW	45	MemoryRegion *mem;
469d02de	46	void (reset)(struct VFIOPCIDevice vdev, struct VFIOQuirk *quirk);
78f33d2b AW	47	} VFIOQuirk;
	48
	49	typedef struct VFIOBAR {
	50	VFIORegion region;
3a286732 AW	51	MemoryRegion *mr;
	52	size_t size;
	53	uint8_t type;
78f33d2b AW	54	bool ioport;
	55	bool mem64;
	56	QLIST_HEAD(, VFIOQuirk) quirks;
	57	} VFIOBAR;
	58
	59	typedef struct VFIOVGARegion {
	60	MemoryRegion mem;
	61	off_t offset;
	62	int nr;
	63	QLIST_HEAD(, VFIOQuirk) quirks;
	64	} VFIOVGARegion;
	65
	66	typedef struct VFIOVGA {
	67	off_t fd_offset;
	68	int fd;
	69	VFIOVGARegion region[QEMU_PCI_VGA_NUM_REGIONS];
	70	} VFIOVGA;
	71
	72	typedef struct VFIOINTx {
	73	bool pending; /* interrupt pending */
	74	bool kvm_accel; /* set when QEMU bypass through KVM enabled */
	75	uint8_t pin; /* which pin to pull for qemu_set_irq */
	76	EventNotifier interrupt; /* eventfd triggered on interrupt */
	77	EventNotifier unmask; /* eventfd for unmask on QEMU bypass */
	78	PCIINTxRoute route; /* routing info for QEMU bypass */
	79	uint32_t mmap_timeout; /* delay to re-enable mmaps after interrupt */
	80	QEMUTimer mmap_timer; / enable mmaps after periods w/o interrupts */
	81	} VFIOINTx;
	82
	83	typedef struct VFIOMSIVector {
	84	/*
	85	* Two interrupt paths are configured per vector. The first, is only used
	86	* for interrupts injected via QEMU. This is typically the non-accel path,
	87	* but may also be used when we want QEMU to handle masking and pending
	88	* bits. The KVM path bypasses QEMU and is therefore higher performance,
	89	* but requires masking at the device. virq is used to track the MSI route
	90	* through KVM, thus kvm_interrupt is only available when virq is set to a
	91	* valid (>= 0) value.
	92	*/
	93	EventNotifier interrupt;
	94	EventNotifier kvm_interrupt;
	95	struct VFIOPCIDevice vdev; / back pointer to device */
	96	int virq;
	97	bool use;
	98	} VFIOMSIVector;
	99
	100	enum {
	101	VFIO_INT_NONE = 0,
	102	VFIO_INT_INTx = 1,
	103	VFIO_INT_MSI = 2,
	104	VFIO_INT_MSIX = 3,
	105	};
	106
edd09278	107	/* Cache of MSI-X setup */
78f33d2b AW	108	typedef struct VFIOMSIXInfo {
	109	uint8_t table_bar;
	110	uint8_t pba_bar;
	111	uint16_t entries;
	112	uint32_t table_offset;
	113	uint32_t pba_offset;
95239e16	114	unsigned long *pending;
78f33d2b AW	115	} VFIOMSIXInfo;
	116
	117	typedef struct VFIOPCIDevice {
	118	PCIDevice pdev;
	119	VFIODevice vbasedev;
	120	VFIOINTx intx;
	121	unsigned int config_size;
	122	uint8_t emulated_config_bits; / QEMU emulated bits, little-endian */
	123	off_t config_offset; /* Offset of config space region within device fd */
	124	unsigned int rom_size;
	125	off_t rom_offset; /* Offset of ROM region within device fd */
	126	void *rom;
	127	int msi_cap_size;
	128	VFIOMSIVector *msi_vectors;
	129	VFIOMSIXInfo *msix;
	130	int nr_vectors; /* Number of MSI/MSIX vectors currently in use */
	131	int interrupt; /* Current interrupt type */
	132	VFIOBAR bars[PCI_NUM_REGIONS - 1]; /* No ROM */
2d82f8a3	133	VFIOVGA vga; / 0xa0000, 0x3b0, 0x3c0 */
c4c45e94	134	void *igd_opregion;
78f33d2b AW	135	PCIHostDeviceAddress host;
	136	EventNotifier err_notifier;
	137	EventNotifier req_notifier;
	138	int (resetfn)(struct VFIOPCIDevice );
89dcccc5 AW	139	uint32_t vendor_id;
	140	uint32_t device_id;
	141	uint32_t sub_vendor_id;
	142	uint32_t sub_device_id;
78f33d2b AW	143	uint32_t features;
	144	#define VFIO_FEATURE_ENABLE_VGA_BIT 0
	145	#define VFIO_FEATURE_ENABLE_VGA (1 << VFIO_FEATURE_ENABLE_VGA_BIT)
	146	#define VFIO_FEATURE_ENABLE_REQ_BIT 1
	147	#define VFIO_FEATURE_ENABLE_REQ (1 << VFIO_FEATURE_ENABLE_REQ_BIT)
6ced0bba AW	148	#define VFIO_FEATURE_ENABLE_IGD_OPREGION_BIT 2
	149	#define VFIO_FEATURE_ENABLE_IGD_OPREGION \
	150	(1 << VFIO_FEATURE_ENABLE_IGD_OPREGION_BIT)
a9994687	151	OnOffAuto display;
78f33d2b	152	int32_t bootindex;
c4c45e94	153	uint32_t igd_gms;
89d5202e	154	OffAutoPCIBAR msix_relo;
78f33d2b	155	uint8_t pm_cap;
dfbee78d	156	uint8_t nv_gpudirect_clique;
78f33d2b AW	157	bool pci_aer;
	158	bool req_enabled;
	159	bool has_flr;
	160	bool has_pm_reset;
	161	bool rom_read_failed;
	162	bool no_kvm_intx;
	163	bool no_kvm_msi;
	164	bool no_kvm_msix;
db32d0f4	165	bool no_geforce_quirks;
c958c51d	166	bool no_kvm_ioeventfd;
2b1dbd0d	167	bool no_vfio_ioeventfd;
00195ba7	168	VFIODisplay *dpy;
78f33d2b AW	169	} VFIOPCIDevice;
78f33d2b AW	170
c00d61d8 AW	171	uint32_t vfio_pci_read_config(PCIDevice *pdev, uint32_t addr, int len);
	172	void vfio_pci_write_config(PCIDevice *pdev,
	173	uint32_t addr, uint32_t val, int len);
	174
	175	uint64_t vfio_vga_read(void *opaque, hwaddr addr, unsigned size);
	176	void vfio_vga_write(void *opaque, hwaddr addr, uint64_t data, unsigned size);
	177
	178	bool vfio_blacklist_opt_rom(VFIOPCIDevice *vdev);
	179	void vfio_vga_quirk_setup(VFIOPCIDevice *vdev);
2d82f8a3 AW	180	void vfio_vga_quirk_exit(VFIOPCIDevice *vdev);
2d82f8a3 AW	181	void vfio_vga_quirk_finalize(VFIOPCIDevice *vdev);
c00d61d8	182	void vfio_bar_quirk_setup(VFIOPCIDevice *vdev, int nr);
2d82f8a3 AW	183	void vfio_bar_quirk_exit(VFIOPCIDevice *vdev, int nr);
2d82f8a3 AW	184	void vfio_bar_quirk_finalize(VFIOPCIDevice *vdev, int nr);
c9c50009	185	void vfio_setup_resetfn_quirk(VFIOPCIDevice *vdev);
e3f79f3b	186	int vfio_add_virt_caps(VFIOPCIDevice vdev, Error *errp);
469d02de	187	void vfio_quirk_reset(VFIOPCIDevice *vdev);
c00d61d8	188
dfbee78d AW	189	extern const PropertyInfo qdev_prop_nv_gpudirect_clique;
dfbee78d AW	190
cde4279b	191	int vfio_populate_vga(VFIOPCIDevice vdev, Error *errp);
e593c021	192
6ced0bba	193	int vfio_pci_igd_opregion_init(VFIOPCIDevice *vdev,
7237011d EA	194	struct vfio_region_info *info,
7237011d EA	195	Error **errp);
6ced0bba	196
8983e3e3	197	void vfio_display_reset(VFIOPCIDevice *vdev);
a9994687 GH	198	int vfio_display_probe(VFIOPCIDevice vdev, Error *errp);
	199	void vfio_display_finalize(VFIOPCIDevice *vdev);
	200
78f33d2b	201	#endif /* HW_VFIO_VFIO_PCI_H */