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提交 5546a621 编写于 作者: E Eric Auger 提交者： Alex Williamson
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hw/vfio/pci: introduce minimalist VFIODevice with fd 

Introduce a new base VFIODevice strcut that will be used by both PCI
and Platform VFIO device. Move VFIOPCIDevice fd field there. Obviously
other fields from VFIOPCIDevice will be moved there but this patch
file is introduced to ease the review.

Also vfio_mask_single_irqindex, vfio_unmask_single_irqindex,
vfio_disable_irqindex now take a VFIODevice handle as argument.
Signed-off-by: NEric Auger <eric.auger@linaro.org>
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>
上级 079eb19c
隐藏空白更改
内联 并排
Showing with 63 addition and 54 deletion
hw/vfio/pci.c
浏览文件 @ 5546a621
......@@ -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, &reg_info)) {
if (ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_REGION_INFO, &reg_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, &reg_info);
ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_REGION_INFO, &reg_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, &reg_info);
ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_REGION_INFO, &reg_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;
......
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