2 * vfio based device assignment support - PCI devices
4 * Copyright Red Hat, Inc. 2012-2015
9 * This work is licensed under the terms of the GNU GPL, version 2. See
10 * the COPYING file in the top-level directory.
12 #ifndef HW_VFIO_VFIO_PCI_H
13 #define HW_VFIO_VFIO_PCI_H
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"
23 #define PCI_ANY_ID (~0)
27 typedef struct VFIOIOEventFD {
28 QLIST_ENTRY(VFIOIOEventFD) next;
36 bool dynamic; /* Added runtime, removed on device reset */
40 typedef struct VFIOQuirk {
41 QLIST_ENTRY(VFIOQuirk) next;
43 QLIST_HEAD(, VFIOIOEventFD) ioeventfds;
46 void (*reset)(struct VFIOPCIDevice *vdev, struct VFIOQuirk *quirk);
49 typedef struct VFIOBAR {
56 QLIST_HEAD(, VFIOQuirk) quirks;
59 typedef struct VFIOVGARegion {
63 QLIST_HEAD(, VFIOQuirk) quirks;
66 typedef struct VFIOVGA {
69 VFIOVGARegion region[QEMU_PCI_VGA_NUM_REGIONS];
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 */
83 typedef struct VFIOMSIVector {
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
93 EventNotifier interrupt;
94 EventNotifier kvm_interrupt;
95 struct VFIOPCIDevice *vdev; /* back pointer to device */
107 /* Cache of MSI-X setup */
108 typedef struct VFIOMSIXInfo {
112 uint32_t table_offset;
114 unsigned long *pending;
117 typedef struct VFIOPCIDevice {
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 */
128 VFIOMSIVector *msi_vectors;
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 */
133 VFIOVGA *vga; /* 0xa0000, 0x3b0, 0x3c0 */
135 PCIHostDeviceAddress host;
136 EventNotifier err_notifier;
137 EventNotifier req_notifier;
138 int (*resetfn)(struct VFIOPCIDevice *);
141 uint32_t sub_vendor_id;
142 uint32_t sub_device_id;
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)
148 #define VFIO_FEATURE_ENABLE_IGD_OPREGION_BIT 2
149 #define VFIO_FEATURE_ENABLE_IGD_OPREGION \
150 (1 << VFIO_FEATURE_ENABLE_IGD_OPREGION_BIT)
154 OffAutoPCIBAR msix_relo;
156 uint8_t nv_gpudirect_clique;
161 bool rom_read_failed;
165 bool no_geforce_quirks;
166 bool no_kvm_ioeventfd;
167 bool no_vfio_ioeventfd;
172 uint32_t vfio_pci_read_config(PCIDevice *pdev, uint32_t addr, int len);
173 void vfio_pci_write_config(PCIDevice *pdev,
174 uint32_t addr, uint32_t val, int len);
176 uint64_t vfio_vga_read(void *opaque, hwaddr addr, unsigned size);
177 void vfio_vga_write(void *opaque, hwaddr addr, uint64_t data, unsigned size);
179 bool vfio_blacklist_opt_rom(VFIOPCIDevice *vdev);
180 void vfio_vga_quirk_setup(VFIOPCIDevice *vdev);
181 void vfio_vga_quirk_exit(VFIOPCIDevice *vdev);
182 void vfio_vga_quirk_finalize(VFIOPCIDevice *vdev);
183 void vfio_bar_quirk_setup(VFIOPCIDevice *vdev, int nr);
184 void vfio_bar_quirk_exit(VFIOPCIDevice *vdev, int nr);
185 void vfio_bar_quirk_finalize(VFIOPCIDevice *vdev, int nr);
186 void vfio_setup_resetfn_quirk(VFIOPCIDevice *vdev);
187 int vfio_add_virt_caps(VFIOPCIDevice *vdev, Error **errp);
188 void vfio_quirk_reset(VFIOPCIDevice *vdev);
190 extern const PropertyInfo qdev_prop_nv_gpudirect_clique;
192 int vfio_populate_vga(VFIOPCIDevice *vdev, Error **errp);
194 int vfio_pci_igd_opregion_init(VFIOPCIDevice *vdev,
195 struct vfio_region_info *info,
198 void vfio_display_reset(VFIOPCIDevice *vdev);
199 int vfio_display_probe(VFIOPCIDevice *vdev, Error **errp);
200 void vfio_display_finalize(VFIOPCIDevice *vdev);
202 #endif /* HW_VFIO_VFIO_PCI_H */