diff options
| -rw-r--r-- | hw/vfio/pci.c | 117 |
1 files changed, 63 insertions, 54 deletions
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 7083151300..22d0c85fea 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -185,9 +185,13 @@ typedef struct VFIOMSIXInfo { void *mmap; } VFIOMSIXInfo; +typedef struct VFIODevice { + int fd; +} VFIODevice; + typedef struct VFIOPCIDevice { PCIDevice pdev; - int fd; + VFIODevice vbasedev; VFIOINTx intx; unsigned int config_size; uint8_t *emulated_config_bits; /* QEMU emulated bits, little-endian */ @@ -277,7 +281,7 @@ static void vfio_mmap_set_enabled(VFIOPCIDevice *vdev, bool enabled); /* * Common VFIO interrupt disable */ -static void vfio_disable_irqindex(VFIOPCIDevice *vdev, int index) +static void vfio_disable_irqindex(VFIODevice *vbasedev, int index) { struct vfio_irq_set irq_set = { .argsz = sizeof(irq_set), @@ -287,13 +291,13 @@ static void vfio_disable_irqindex(VFIOPCIDevice *vdev, int index) .count = 0, }; - ioctl(vdev->fd, VFIO_DEVICE_SET_IRQS, &irq_set); + ioctl(vbasedev->fd, VFIO_DEVICE_SET_IRQS, &irq_set); } /* * INTx */ -static void vfio_unmask_single_irqindex(VFIOPCIDevice *vdev, int index) +static void vfio_unmask_single_irqindex(VFIODevice *vbasedev, int index) { struct vfio_irq_set irq_set = { .argsz = sizeof(irq_set), @@ -303,11 +307,11 @@ static void vfio_unmask_single_irqindex(VFIOPCIDevice *vdev, int index) .count = 1, }; - ioctl(vdev->fd, VFIO_DEVICE_SET_IRQS, &irq_set); + ioctl(vbasedev->fd, VFIO_DEVICE_SET_IRQS, &irq_set); } #ifdef CONFIG_KVM /* Unused outside of CONFIG_KVM code */ -static void vfio_mask_single_irqindex(VFIOPCIDevice *vdev, int index) +static void vfio_mask_single_irqindex(VFIODevice *vbasedev, int index) { struct vfio_irq_set irq_set = { .argsz = sizeof(irq_set), @@ -317,7 +321,7 @@ static void vfio_mask_single_irqindex(VFIOPCIDevice *vdev, int index) .count = 1, }; - ioctl(vdev->fd, VFIO_DEVICE_SET_IRQS, &irq_set); + ioctl(vbasedev->fd, VFIO_DEVICE_SET_IRQS, &irq_set); } #endif @@ -381,7 +385,7 @@ static void vfio_eoi(VFIOPCIDevice *vdev) vdev->intx.pending = false; pci_irq_deassert(&vdev->pdev); - vfio_unmask_single_irqindex(vdev, VFIO_PCI_INTX_IRQ_INDEX); + vfio_unmask_single_irqindex(&vdev->vbasedev, VFIO_PCI_INTX_IRQ_INDEX); } static void vfio_enable_intx_kvm(VFIOPCIDevice *vdev) @@ -404,7 +408,7 @@ static void vfio_enable_intx_kvm(VFIOPCIDevice *vdev) /* Get to a known interrupt state */ qemu_set_fd_handler(irqfd.fd, NULL, NULL, vdev); - vfio_mask_single_irqindex(vdev, VFIO_PCI_INTX_IRQ_INDEX); + vfio_mask_single_irqindex(&vdev->vbasedev, VFIO_PCI_INTX_IRQ_INDEX); vdev->intx.pending = false; pci_irq_deassert(&vdev->pdev); @@ -434,7 +438,7 @@ static void vfio_enable_intx_kvm(VFIOPCIDevice *vdev) *pfd = irqfd.resamplefd; - ret = ioctl(vdev->fd, VFIO_DEVICE_SET_IRQS, irq_set); + ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_SET_IRQS, irq_set); g_free(irq_set); if (ret) { error_report("vfio: Error: Failed to setup INTx unmask fd: %m"); @@ -442,7 +446,7 @@ static void vfio_enable_intx_kvm(VFIOPCIDevice *vdev) } /* Let'em rip */ - vfio_unmask_single_irqindex(vdev, VFIO_PCI_INTX_IRQ_INDEX); + vfio_unmask_single_irqindex(&vdev->vbasedev, VFIO_PCI_INTX_IRQ_INDEX); vdev->intx.kvm_accel = true; @@ -458,7 +462,7 @@ fail_irqfd: event_notifier_cleanup(&vdev->intx.unmask); fail: qemu_set_fd_handler(irqfd.fd, vfio_intx_interrupt, NULL, vdev); - vfio_unmask_single_irqindex(vdev, VFIO_PCI_INTX_IRQ_INDEX); + vfio_unmask_single_irqindex(&vdev->vbasedev, VFIO_PCI_INTX_IRQ_INDEX); #endif } @@ -479,7 +483,7 @@ static void vfio_disable_intx_kvm(VFIOPCIDevice *vdev) * Get to a known state, hardware masked, QEMU ready to accept new * interrupts, QEMU IRQ de-asserted. */ - vfio_mask_single_irqindex(vdev, VFIO_PCI_INTX_IRQ_INDEX); + vfio_mask_single_irqindex(&vdev->vbasedev, VFIO_PCI_INTX_IRQ_INDEX); vdev->intx.pending = false; pci_irq_deassert(&vdev->pdev); @@ -497,7 +501,7 @@ static void vfio_disable_intx_kvm(VFIOPCIDevice *vdev) vdev->intx.kvm_accel = false; /* If we've missed an event, let it re-fire through QEMU */ - vfio_unmask_single_irqindex(vdev, VFIO_PCI_INTX_IRQ_INDEX); + vfio_unmask_single_irqindex(&vdev->vbasedev, VFIO_PCI_INTX_IRQ_INDEX); trace_vfio_disable_intx_kvm(vdev->host.domain, vdev->host.bus, vdev->host.slot, vdev->host.function); @@ -583,7 +587,7 @@ static int vfio_enable_intx(VFIOPCIDevice *vdev) *pfd = event_notifier_get_fd(&vdev->intx.interrupt); qemu_set_fd_handler(*pfd, vfio_intx_interrupt, NULL, vdev); - ret = ioctl(vdev->fd, VFIO_DEVICE_SET_IRQS, irq_set); + ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_SET_IRQS, irq_set); g_free(irq_set); if (ret) { error_report("vfio: Error: Failed to setup INTx fd: %m"); @@ -608,7 +612,7 @@ static void vfio_disable_intx(VFIOPCIDevice *vdev) timer_del(vdev->intx.mmap_timer); vfio_disable_intx_kvm(vdev); - vfio_disable_irqindex(vdev, VFIO_PCI_INTX_IRQ_INDEX); + vfio_disable_irqindex(&vdev->vbasedev, VFIO_PCI_INTX_IRQ_INDEX); vdev->intx.pending = false; pci_irq_deassert(&vdev->pdev); vfio_mmap_set_enabled(vdev, true); @@ -698,7 +702,7 @@ static int vfio_enable_vectors(VFIOPCIDevice *vdev, bool msix) fds[i] = fd; } - ret = ioctl(vdev->fd, VFIO_DEVICE_SET_IRQS, irq_set); + ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_SET_IRQS, irq_set); g_free(irq_set); @@ -795,7 +799,7 @@ static int vfio_msix_vector_do_use(PCIDevice *pdev, unsigned int nr, * increase them as needed. */ if (vdev->nr_vectors < nr + 1) { - vfio_disable_irqindex(vdev, VFIO_PCI_MSIX_IRQ_INDEX); + vfio_disable_irqindex(&vdev->vbasedev, VFIO_PCI_MSIX_IRQ_INDEX); vdev->nr_vectors = nr + 1; ret = vfio_enable_vectors(vdev, true); if (ret) { @@ -823,7 +827,7 @@ static int vfio_msix_vector_do_use(PCIDevice *pdev, unsigned int nr, *pfd = event_notifier_get_fd(&vector->interrupt); } - ret = ioctl(vdev->fd, VFIO_DEVICE_SET_IRQS, irq_set); + ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_SET_IRQS, irq_set); g_free(irq_set); if (ret) { error_report("vfio: failed to modify vector, %d", ret); @@ -874,7 +878,7 @@ static void vfio_msix_vector_release(PCIDevice *pdev, unsigned int nr) *pfd = event_notifier_get_fd(&vector->interrupt); - ioctl(vdev->fd, VFIO_DEVICE_SET_IRQS, irq_set); + ioctl(vdev->vbasedev.fd, VFIO_DEVICE_SET_IRQS, irq_set); g_free(irq_set); } @@ -1033,7 +1037,7 @@ static void vfio_disable_msix(VFIOPCIDevice *vdev) } if (vdev->nr_vectors) { - vfio_disable_irqindex(vdev, VFIO_PCI_MSIX_IRQ_INDEX); + vfio_disable_irqindex(&vdev->vbasedev, VFIO_PCI_MSIX_IRQ_INDEX); } vfio_disable_msi_common(vdev); @@ -1044,7 +1048,7 @@ static void vfio_disable_msix(VFIOPCIDevice *vdev) static void vfio_disable_msi(VFIOPCIDevice *vdev) { - vfio_disable_irqindex(vdev, VFIO_PCI_MSI_IRQ_INDEX); + vfio_disable_irqindex(&vdev->vbasedev, VFIO_PCI_MSI_IRQ_INDEX); vfio_disable_msi_common(vdev); trace_vfio_disable_msi(vdev->host.domain, vdev->host.bus, @@ -1188,7 +1192,7 @@ static void vfio_pci_load_rom(VFIOPCIDevice *vdev) off_t off = 0; size_t bytes; - if (ioctl(vdev->fd, VFIO_DEVICE_GET_REGION_INFO, ®_info)) { + if (ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_REGION_INFO, ®_info)) { error_report("vfio: Error getting ROM info: %m"); return; } @@ -1218,7 +1222,8 @@ static void vfio_pci_load_rom(VFIOPCIDevice *vdev) memset(vdev->rom, 0xff, size); while (size) { - bytes = pread(vdev->fd, vdev->rom + off, size, vdev->rom_offset + off); + bytes = pread(vdev->vbasedev.fd, vdev->rom + off, + size, vdev->rom_offset + off); if (bytes == 0) { break; } else if (bytes > 0) { @@ -1312,6 +1317,7 @@ static void vfio_pci_size_rom(VFIOPCIDevice *vdev) off_t offset = vdev->config_offset + PCI_ROM_ADDRESS; DeviceState *dev = DEVICE(vdev); char name[32]; + int fd = vdev->vbasedev.fd; if (vdev->pdev.romfile || !vdev->pdev.rom_bar) { /* Since pci handles romfile, just print a message and return */ @@ -1330,10 +1336,10 @@ static void vfio_pci_size_rom(VFIOPCIDevice *vdev) * Use the same size ROM BAR as the physical device. The contents * will get filled in later when the guest tries to read it. */ - if (pread(vdev->fd, &orig, 4, offset) != 4 || - pwrite(vdev->fd, &size, 4, offset) != 4 || - pread(vdev->fd, &size, 4, offset) != 4 || - pwrite(vdev->fd, &orig, 4, offset) != 4) { + if (pread(fd, &orig, 4, offset) != 4 || + pwrite(fd, &size, 4, offset) != 4 || + pread(fd, &size, 4, offset) != 4 || + pwrite(fd, &orig, 4, offset) != 4) { error_report("%s(%04x:%02x:%02x.%x) failed: %m", __func__, vdev->host.domain, vdev->host.bus, vdev->host.slot, vdev->host.function); @@ -2345,7 +2351,8 @@ static uint32_t vfio_pci_read_config(PCIDevice *pdev, uint32_t addr, int len) if (~emu_bits & (0xffffffffU >> (32 - len * 8))) { ssize_t ret; - ret = pread(vdev->fd, &phys_val, len, vdev->config_offset + addr); + ret = pread(vdev->vbasedev.fd, &phys_val, len, + vdev->config_offset + addr); if (ret != len) { error_report("%s(%04x:%02x:%02x.%x, 0x%x, 0x%x) failed: %m", __func__, vdev->host.domain, vdev->host.bus, @@ -2375,7 +2382,8 @@ static void vfio_pci_write_config(PCIDevice *pdev, uint32_t addr, addr, val, len); /* Write everything to VFIO, let it filter out what we can't write */ - if (pwrite(vdev->fd, &val_le, len, vdev->config_offset + addr) != len) { + if (pwrite(vdev->vbasedev.fd, &val_le, len, vdev->config_offset + addr) + != len) { error_report("%s(%04x:%02x:%02x.%x, 0x%x, 0x%x, 0x%x) failed: %m", __func__, vdev->host.domain, vdev->host.bus, vdev->host.slot, vdev->host.function, addr, val, len); @@ -2743,7 +2751,7 @@ static int vfio_setup_msi(VFIOPCIDevice *vdev, int pos) bool msi_64bit, msi_maskbit; int ret, entries; - if (pread(vdev->fd, &ctrl, sizeof(ctrl), + if (pread(vdev->vbasedev.fd, &ctrl, sizeof(ctrl), vdev->config_offset + pos + PCI_CAP_FLAGS) != sizeof(ctrl)) { return -errno; } @@ -2782,23 +2790,24 @@ static int vfio_early_setup_msix(VFIOPCIDevice *vdev) uint8_t pos; uint16_t ctrl; uint32_t table, pba; + int fd = vdev->vbasedev.fd; pos = pci_find_capability(&vdev->pdev, PCI_CAP_ID_MSIX); if (!pos) { return 0; } - if (pread(vdev->fd, &ctrl, sizeof(ctrl), + if (pread(fd, &ctrl, sizeof(ctrl), vdev->config_offset + pos + PCI_CAP_FLAGS) != sizeof(ctrl)) { return -errno; } - if (pread(vdev->fd, &table, sizeof(table), + if (pread(fd, &table, sizeof(table), vdev->config_offset + pos + PCI_MSIX_TABLE) != sizeof(table)) { return -errno; } - if (pread(vdev->fd, &pba, sizeof(pba), + if (pread(fd, &pba, sizeof(pba), vdev->config_offset + pos + PCI_MSIX_PBA) != sizeof(pba)) { return -errno; } @@ -2951,7 +2960,7 @@ static void vfio_map_bar(VFIOPCIDevice *vdev, int nr) vdev->host.function, nr); /* Determine what type of BAR this is for registration */ - ret = pread(vdev->fd, &pci_bar, sizeof(pci_bar), + ret = pread(vdev->vbasedev.fd, &pci_bar, sizeof(pci_bar), vdev->config_offset + PCI_BASE_ADDRESS_0 + (4 * nr)); if (ret != sizeof(pci_bar)) { error_report("vfio: Failed to read BAR %d (%m)", nr); @@ -3371,7 +3380,7 @@ static int vfio_pci_hot_reset(VFIOPCIDevice *vdev, bool single) info = g_malloc0(sizeof(*info)); info->argsz = sizeof(*info); - ret = ioctl(vdev->fd, VFIO_DEVICE_GET_PCI_HOT_RESET_INFO, info); + ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_PCI_HOT_RESET_INFO, info); if (ret && errno != ENOSPC) { ret = -errno; if (!vdev->has_pm_reset) { @@ -3387,7 +3396,7 @@ static int vfio_pci_hot_reset(VFIOPCIDevice *vdev, bool single) info->argsz = sizeof(*info) + (count * sizeof(*devices)); devices = &info->devices[0]; - ret = ioctl(vdev->fd, VFIO_DEVICE_GET_PCI_HOT_RESET_INFO, info); + ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_PCI_HOT_RESET_INFO, info); if (ret) { ret = -errno; error_report("vfio: hot reset info failed: %m"); @@ -3483,7 +3492,7 @@ static int vfio_pci_hot_reset(VFIOPCIDevice *vdev, bool single) } /* Bus reset! */ - ret = ioctl(vdev->fd, VFIO_DEVICE_PCI_HOT_RESET, reset); + ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_PCI_HOT_RESET, reset); g_free(reset); trace_vfio_pci_hot_reset_result(vdev->host.domain, @@ -3914,12 +3923,12 @@ static int vfio_get_device(VFIOGroup *group, const char *name, return ret; } - vdev->fd = ret; + vdev->vbasedev.fd = ret; vdev->group = group; QLIST_INSERT_HEAD(&group->device_list, vdev, next); /* Sanity check device */ - ret = ioctl(vdev->fd, VFIO_DEVICE_GET_INFO, &dev_info); + ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_INFO, &dev_info); if (ret) { error_report("vfio: error getting device info: %m"); goto error; @@ -3949,7 +3958,7 @@ static int vfio_get_device(VFIOGroup *group, const char *name, for (i = VFIO_PCI_BAR0_REGION_INDEX; i < VFIO_PCI_ROM_REGION_INDEX; i++) { reg_info.index = i; - ret = ioctl(vdev->fd, VFIO_DEVICE_GET_REGION_INFO, ®_info); + ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_REGION_INFO, ®_info); if (ret) { error_report("vfio: Error getting region %d info: %m", i); goto error; @@ -3963,14 +3972,14 @@ static int vfio_get_device(VFIOGroup *group, const char *name, vdev->bars[i].flags = reg_info.flags; vdev->bars[i].size = reg_info.size; vdev->bars[i].fd_offset = reg_info.offset; - vdev->bars[i].fd = vdev->fd; + vdev->bars[i].fd = vdev->vbasedev.fd; vdev->bars[i].nr = i; QLIST_INIT(&vdev->bars[i].quirks); } reg_info.index = VFIO_PCI_CONFIG_REGION_INDEX; - ret = ioctl(vdev->fd, VFIO_DEVICE_GET_REGION_INFO, ®_info); + ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_REGION_INFO, ®_info); if (ret) { error_report("vfio: Error getting config info: %m"); goto error; @@ -3993,7 +4002,7 @@ static int vfio_get_device(VFIOGroup *group, const char *name, .index = VFIO_PCI_VGA_REGION_INDEX, }; - ret = ioctl(vdev->fd, VFIO_DEVICE_GET_REGION_INFO, &vga_info); + ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_REGION_INFO, &vga_info); if (ret) { error_report( "vfio: Device does not support requested feature x-vga"); @@ -4010,7 +4019,7 @@ static int vfio_get_device(VFIOGroup *group, const char *name, } vdev->vga.fd_offset = vga_info.offset; - vdev->vga.fd = vdev->fd; + vdev->vga.fd = vdev->vbasedev.fd; vdev->vga.region[QEMU_PCI_VGA_MEM].offset = QEMU_PCI_VGA_MEM_BASE; vdev->vga.region[QEMU_PCI_VGA_MEM].nr = QEMU_PCI_VGA_MEM; @@ -4028,7 +4037,7 @@ static int vfio_get_device(VFIOGroup *group, const char *name, } irq_info.index = VFIO_PCI_ERR_IRQ_INDEX; - ret = ioctl(vdev->fd, VFIO_DEVICE_GET_IRQ_INFO, &irq_info); + ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_IRQ_INFO, &irq_info); if (ret) { /* This can fail for an old kernel or legacy PCI dev */ trace_vfio_get_device_get_irq_info_failure(); @@ -4046,7 +4055,7 @@ error: if (ret) { QLIST_REMOVE(vdev, next); vdev->group = NULL; - close(vdev->fd); + close(vdev->vbasedev.fd); } return ret; } @@ -4055,8 +4064,8 @@ static void vfio_put_device(VFIOPCIDevice *vdev) { QLIST_REMOVE(vdev, next); vdev->group = NULL; - trace_vfio_put_device(vdev->fd); - close(vdev->fd); + trace_vfio_put_device(vdev->vbasedev.fd); + close(vdev->vbasedev.fd); if (vdev->msix) { g_free(vdev->msix); vdev->msix = NULL; @@ -4125,7 +4134,7 @@ static void vfio_register_err_notifier(VFIOPCIDevice *vdev) *pfd = event_notifier_get_fd(&vdev->err_notifier); qemu_set_fd_handler(*pfd, vfio_err_notifier_handler, NULL, vdev); - ret = ioctl(vdev->fd, VFIO_DEVICE_SET_IRQS, irq_set); + ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_SET_IRQS, irq_set); if (ret) { error_report("vfio: Failed to set up error notification"); qemu_set_fd_handler(*pfd, NULL, NULL, vdev); @@ -4158,7 +4167,7 @@ static void vfio_unregister_err_notifier(VFIOPCIDevice *vdev) pfd = (int32_t *)&irq_set->data; *pfd = -1; - ret = ioctl(vdev->fd, VFIO_DEVICE_SET_IRQS, irq_set); + ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_SET_IRQS, irq_set); if (ret) { error_report("vfio: Failed to de-assign error fd: %m"); } @@ -4237,7 +4246,7 @@ static int vfio_initfn(PCIDevice *pdev) } /* Get a copy of config space */ - ret = pread(vdev->fd, vdev->pdev.config, + ret = pread(vdev->vbasedev.fd, vdev->pdev.config, MIN(pci_config_size(&vdev->pdev), vdev->config_size), vdev->config_offset); if (ret < (int)MIN(pci_config_size(&vdev->pdev), vdev->config_size)) { @@ -4351,7 +4360,7 @@ static void vfio_pci_reset(DeviceState *dev) vfio_pci_pre_reset(vdev); if (vdev->reset_works && (vdev->has_flr || !vdev->has_pm_reset) && - !ioctl(vdev->fd, VFIO_DEVICE_RESET)) { + !ioctl(vdev->vbasedev.fd, VFIO_DEVICE_RESET)) { trace_vfio_pci_reset_flr(vdev->host.domain, vdev->host.bus, vdev->host.slot, vdev->host.function); goto post_reset; @@ -4364,7 +4373,7 @@ static void vfio_pci_reset(DeviceState *dev) /* If nothing else works and the device supports PM reset, use it */ if (vdev->reset_works && vdev->has_pm_reset && - !ioctl(vdev->fd, VFIO_DEVICE_RESET)) { + !ioctl(vdev->vbasedev.fd, VFIO_DEVICE_RESET)) { trace_vfio_pci_reset_pm(vdev->host.domain, vdev->host.bus, vdev->host.slot, vdev->host.function); goto post_reset; |