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dm: virtio: refine header file

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Reuse linux common virtio header file and remove the repetitive
definition.

Tracked-On: #2145
Signed-off-by: Conghui Chen <conghui.chen@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
This commit is contained in:
Conghui Chen 2018-12-21 21:57:05 +00:00 committed by wenlingz
parent 09634d8215
commit eb96914a1c
12 changed files with 161 additions and 345 deletions
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6
devicemodel/hw/pci/virtio/vhost.c
View File

@ -206,7 +206,7 @@ vhost_vq_register_eventfd(struct vhost_dev *vdev,
}
/* register ioeventfd for kick */
if (base->device_caps & ACRN_VIRTIO_F_VERSION_1) {
if (base->device_caps & (1UL << VIRTIO_F_VERSION_1)) {
/*
* in the current implementation, if virtio 1.0 with pio
* notity, its bar idx should be set to non-zero
@ -234,7 +234,7 @@ vhost_vq_register_eventfd(struct vhost_dev *vdev,
} else {
bar = &vdev->base->dev->bar[base->legacy_pio_bar_idx];
ioeventfd.data = vdev->vq_idx + idx;
ioeventfd.addr = bar->addr + VIRTIO_CR_QNOTIFY;
ioeventfd.addr = bar->addr + VIRTIO_PCI_QUEUE_NOTIFY;
ioeventfd.len = 2;
ioeventfd.flags |= (ACRN_IOEVENTFD_FLAG_DATAMATCH |
ACRN_IOEVENTFD_FLAG_PIO);
@ -677,7 +677,7 @@ vhost_dev_start(struct vhost_dev *vdev)
goto fail;
}
if ((vdev->base->status & VIRTIO_CR_STATUS_DRIVER_OK) == 0) {
if ((vdev->base->status & VIRTIO_CONFIG_S_DRIVER_OK) == 0) {
WPRINTF("status error 0x%x\n", vdev->base->status);
goto fail;
}

244
devicemodel/hw/pci/virtio/virtio.c
View File

@ -85,7 +85,7 @@ virtio_poll_timer(void *arg)
for (i = 0; i < base->vops->nvq; i++) {
vq = &base->queues[i];
vq->used->flags |= ACRN_VRING_USED_F_NO_NOTIFY;
vq->used->flags |= VRING_USED_F_NO_NOTIFY;
/* TODO: call notify when necessary */
if (vq->notify)
(*vq->notify)(DEV_STRUCT(base), vq);
@ -204,10 +204,10 @@ virtio_set_io_bar(struct virtio_base *base, int barnum)
size_t size;
/*
* ??? should we use CFG0 if MSI-X is disabled?
* Existing code did not...
* ??? should we use VIRTIO_PCI_CONFIG_OFF(0) if MSI-X
* is disabled? Existing code did not...
*/
size = VIRTIO_CR_CFG1 + base->vops->cfgsize;
size = VIRTIO_PCI_CONFIG_OFF(1) + base->vops->cfgsize;
pci_emul_alloc_bar(base->dev, barnum, PCIBAR_IO, size);
base->legacy_pio_bar_idx = barnum;
}
@ -286,22 +286,22 @@ virtio_vq_init(struct virtio_base *base, uint32_t pfn)
vq = &base->queues[base->curq];
vq->pfn = pfn;
phys = (uint64_t)pfn << VRING_PAGE_BITS;
size = virtio_vring_size(vq->qsize);
size = vring_size(vq->qsize, VIRTIO_PCI_VRING_ALIGN);
vb = paddr_guest2host(base->dev->vmctx, phys, size);
/* First page(s) are descriptors... */
vq->desc = (struct virtio_desc *)vb;
vb += vq->qsize * sizeof(struct virtio_desc);
vq->desc = (struct vring_desc *)vb;
vb += vq->qsize * sizeof(struct vring_desc);
/* ... immediately followed by "avail" ring (entirely uint16_t's) */
vq->avail = (struct virtio_vring_avail *)vb;
vq->avail = (struct vring_avail *)vb;
vb += (2 + vq->qsize + 1) * sizeof(uint16_t);
/* Then it's rounded up to the next page... */
vb = (char *)roundup2((uintptr_t)vb, VRING_ALIGN);
vb = (char *)roundup2((uintptr_t)vb, VIRTIO_PCI_VRING_ALIGN);
/* ... and the last page(s) are the used ring. */
vq->used = (struct virtio_vring_used *)vb;
vq->used = (struct vring_used *)vb;
/* Mark queue as allocated, and start at 0 when we use it. */
vq->flags = VQ_ALLOC;
@ -329,21 +329,21 @@ virtio_vq_enable(struct virtio_base *base)
/* descriptors */
phys = (((uint64_t)vq->gpa_desc[1]) << 32) | vq->gpa_desc[0];
size = qsz * sizeof(struct virtio_desc);
size = qsz * sizeof(struct vring_desc);
vb = paddr_guest2host(base->dev->vmctx, phys, size);
vq->desc = (struct virtio_desc *)vb;
vq->desc = (struct vring_desc *)vb;
/* available ring */
phys = (((uint64_t)vq->gpa_avail[1]) << 32) | vq->gpa_avail[0];
size = (2 + qsz + 1) * sizeof(uint16_t);
vb = paddr_guest2host(base->dev->vmctx, phys, size);
vq->avail = (struct virtio_vring_avail *)vb;
vq->avail = (struct vring_avail *)vb;
/* used ring */
phys = (((uint64_t)vq->gpa_used[1]) << 32) | vq->gpa_used[0];
size = sizeof(uint16_t) * 3 + sizeof(struct virtio_used) * qsz;
size = sizeof(uint16_t) * 3 + sizeof(struct vring_used_elem) * qsz;
vb = paddr_guest2host(base->dev->vmctx, phys, size);
vq->used = (struct virtio_vring_used *)vb;
vq->used = (struct vring_used *)vb;
/* Mark queue as allocated, and start at 0 when we use it. */
vq->flags = VQ_ALLOC;
@ -359,7 +359,7 @@ virtio_vq_enable(struct virtio_base *base)
* descriptor.
*/
static inline void
_vq_record(int i, volatile struct virtio_desc *vd, struct vmctx *ctx,
_vq_record(int i, volatile struct vring_desc *vd, struct vmctx *ctx,
struct iovec *iov, int n_iov, uint16_t *flags) {
if (i >= n_iov)
@ -418,7 +418,7 @@ vq_getchain(struct virtio_vq_info *vq, uint16_t *pidx,
u_int ndesc, n_indir;
u_int idx, next;
volatile struct virtio_desc *vdir, *vindir, *vp;
volatile struct vring_desc *vdir, *vindir, *vp;
struct vmctx *ctx;
struct virtio_base *base;
const char *name;
@ -471,11 +471,11 @@ vq_getchain(struct virtio_vq_info *vq, uint16_t *pidx,
return -1;
}
vdir = &vq->desc[next];
if ((vdir->flags & ACRN_VRING_DESC_F_INDIRECT) == 0) {
if ((vdir->flags & VRING_DESC_F_INDIRECT) == 0) {
_vq_record(i, vdir, ctx, iov, n_iov, flags);
i++;
} else if ((base->device_caps &
ACRN_VIRTIO_RING_F_INDIRECT_DESC) == 0) {
(1 << VIRTIO_RING_F_INDIRECT_DESC)) == 0) {
fprintf(stderr,
"%s: descriptor has forbidden INDIRECT flag, "
"driver confused?\r\n",
@ -502,7 +502,7 @@ vq_getchain(struct virtio_vq_info *vq, uint16_t *pidx,
next = 0;
for (;;) {
vp = &vindir[next];
if (vp->flags & ACRN_VRING_DESC_F_INDIRECT) {
if (vp->flags & VRING_DESC_F_INDIRECT) {
fprintf(stderr,
"%s: indirect desc has INDIR flag,"
" driver confused?\r\n",
@ -512,7 +512,7 @@ vq_getchain(struct virtio_vq_info *vq, uint16_t *pidx,
_vq_record(i, vp, ctx, iov, n_iov, flags);
if (++i > VQ_MAX_DESCRIPTORS)
goto loopy;
if ((vp->flags & ACRN_VRING_DESC_F_NEXT) == 0)
if ((vp->flags & VRING_DESC_F_NEXT) == 0)
break;
next = vp->next;
if (next >= n_indir) {
@ -524,7 +524,7 @@ vq_getchain(struct virtio_vq_info *vq, uint16_t *pidx,
}
}
}
if ((vdir->flags & ACRN_VRING_DESC_F_NEXT) == 0)
if ((vdir->flags & VRING_DESC_F_NEXT) == 0)
return i;
}
loopy:
@ -557,8 +557,8 @@ void
vq_relchain(struct virtio_vq_info *vq, uint16_t idx, uint32_t iolen)
{
uint16_t uidx, mask;
volatile struct virtio_vring_used *vuh;
volatile struct virtio_used *vue;
volatile struct vring_used *vuh;
volatile struct vring_used_elem *vue;
/*
* Notes:
@ -575,8 +575,8 @@ vq_relchain(struct virtio_vq_info *vq, uint16_t idx, uint32_t iolen)
uidx = vuh->idx;
vue = &vuh->ring[uidx++ & mask];
vue->idx = idx;
vue->tlen = iolen;
vue->id = idx;
vue->len = iolen;
vuh->idx = uidx;
}
@ -606,7 +606,7 @@ vq_endchains(struct virtio_vq_info *vq, int used_all_avail)
* Interrupt generation: if we're using EVENT_IDX,
* interrupt if we've crossed the event threshold.
* Otherwise interrupt is generated if we added "used" entries,
* but suppressed by ACRN_VRING_AVAIL_F_NO_INTERRUPT.
* but suppressed by VRING_AVAIL_F_NO_INTERRUPT.
*
* In any case, though, if NOTIFY_ON_EMPTY is set and the
* entire avail was processed, we need to interrupt always.
@ -615,9 +615,9 @@ vq_endchains(struct virtio_vq_info *vq, int used_all_avail)
old_idx = vq->save_used;
vq->save_used = new_idx = vq->used->idx;
if (used_all_avail &&
(base->negotiated_caps & ACRN_VIRTIO_F_NOTIFY_ON_EMPTY))
(base->negotiated_caps & (1 << VIRTIO_F_NOTIFY_ON_EMPTY)))
intr = 1;
else if (base->negotiated_caps & ACRN_VIRTIO_RING_F_EVENT_IDX) {
else if (base->negotiated_caps & (1 << VIRTIO_RING_F_EVENT_IDX)) {
event_idx = VQ_USED_EVENT_IDX(vq);
/*
* This calculation is per docs and the kernel
@ -627,7 +627,7 @@ vq_endchains(struct virtio_vq_info *vq, int used_all_avail)
(uint16_t)(new_idx - old_idx);
} else {
intr = new_idx != old_idx &&
!(vq->avail->flags & ACRN_VRING_AVAIL_F_NO_INTERRUPT);
!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT);
}
if (intr)
vq_interrupt(base, vq);
@ -654,7 +654,7 @@ void vq_clear_used_ring_flags(struct virtio_base *base, struct virtio_vq_info *v
if (virtio_poll_enabled && backend_type == BACKEND_VBSU && polling_in_progress == 1)
return;
vq->used->flags &= ~ACRN_VRING_USED_F_NO_NOTIFY;
vq->used->flags &= ~VRING_USED_F_NO_NOTIFY;
}
struct config_reg {
@ -666,39 +666,39 @@ struct config_reg {
/* Note: these are in sorted order to make for a fast search */
static struct config_reg legacy_config_regs[] = {
{ VIRTIO_CR_HOSTCAP, 4, 1, "HOSTCAP" },
{ VIRTIO_CR_GUESTCAP, 4, 0, "GUESTCAP" },
{ VIRTIO_CR_PFN, 4, 0, "PFN" },
{ VIRTIO_CR_QNUM, 2, 1, "QNUM" },
{ VIRTIO_CR_QSEL, 2, 0, "QSEL" },
{ VIRTIO_CR_QNOTIFY, 2, 0, "QNOTIFY" },
{ VIRTIO_CR_STATUS, 1, 0, "STATUS" },
{ VIRTIO_CR_ISR, 1, 0, "ISR" },
{ VIRTIO_CR_CFGVEC, 2, 0, "CFGVEC" },
{ VIRTIO_CR_QVEC, 2, 0, "QVEC" },
{ VIRTIO_PCI_HOST_FEATURES, 4, 1, "HOSTCAP" },
{ VIRTIO_PCI_GUEST_FEATURES, 4, 0, "GUESTCAP" },
{ VIRTIO_PCI_QUEUE_PFN, 4, 0, "PFN" },
{ VIRTIO_PCI_QUEUE_NUM, 2, 1, "QNUM" },
{ VIRTIO_PCI_QUEUE_SEL, 2, 0, "QSEL" },
{ VIRTIO_PCI_QUEUE_NOTIFY, 2, 0, "QNOTIFY" },
{ VIRTIO_PCI_STATUS, 1, 0, "STATUS" },
{ VIRTIO_PCI_ISR, 1, 0, "ISR" },
{ VIRTIO_MSI_CONFIG_VECTOR, 2, 0, "CFGVEC" },
{ VIRTIO_MSI_QUEUE_VECTOR, 2, 0, "QVEC" },
};
/* Note: these are in sorted order to make for a fast search */
static struct config_reg modern_config_regs[] = {
{ VIRTIO_COMMON_DFSELECT, 4, 0, "DFSELECT" },
{ VIRTIO_COMMON_DF, 4, 1, "DF" },
{ VIRTIO_COMMON_GFSELECT, 4, 0, "GFSELECT" },
{ VIRTIO_COMMON_GF, 4, 0, "GF" },
{ VIRTIO_COMMON_MSIX, 2, 0, "MSIX" },
{ VIRTIO_COMMON_NUMQ, 2, 1, "NUMQ" },
{ VIRTIO_COMMON_STATUS, 1, 0, "STATUS" },
{ VIRTIO_COMMON_CFGGENERATION, 1, 1, "CFGGENERATION" },
{ VIRTIO_COMMON_Q_SELECT, 2, 0, "Q_SELECT" },
{ VIRTIO_COMMON_Q_SIZE, 2, 0, "Q_SIZE" },
{ VIRTIO_COMMON_Q_MSIX, 2, 0, "Q_MSIX" },
{ VIRTIO_COMMON_Q_ENABLE, 2, 0, "Q_ENABLE" },
{ VIRTIO_COMMON_Q_NOFF, 2, 1, "Q_NOFF" },
{ VIRTIO_COMMON_Q_DESCLO, 4, 0, "Q_DESCLO" },
{ VIRTIO_COMMON_Q_DESCHI, 4, 0, "Q_DESCHI" },
{ VIRTIO_COMMON_Q_AVAILLO, 4, 0, "Q_AVAILLO" },
{ VIRTIO_COMMON_Q_AVAILHI, 4, 0, "Q_AVAILHI" },
{ VIRTIO_COMMON_Q_USEDLO, 4, 0, "Q_USEDLO" },
{ VIRTIO_COMMON_Q_USEDHI, 4, 0, "Q_USEDHI" },
{ VIRTIO_PCI_COMMON_DFSELECT, 4, 0, "DFSELECT" },
{ VIRTIO_PCI_COMMON_DF, 4, 1, "DF" },
{ VIRTIO_PCI_COMMON_GFSELECT, 4, 0, "GFSELECT" },
{ VIRTIO_PCI_COMMON_GF, 4, 0, "GF" },
{ VIRTIO_PCI_COMMON_MSIX, 2, 0, "MSIX" },
{ VIRTIO_PCI_COMMON_NUMQ, 2, 1, "NUMQ" },
{ VIRTIO_PCI_COMMON_STATUS, 1, 0, "STATUS" },
{ VIRTIO_PCI_COMMON_CFGGENERATION, 1, 1, "CFGGENERATION" },
{ VIRTIO_PCI_COMMON_Q_SELECT, 2, 0, "Q_SELECT" },
{ VIRTIO_PCI_COMMON_Q_SIZE, 2, 0, "Q_SIZE" },
{ VIRTIO_PCI_COMMON_Q_MSIX, 2, 0, "Q_MSIX" },
{ VIRTIO_PCI_COMMON_Q_ENABLE, 2, 0, "Q_ENABLE" },
{ VIRTIO_PCI_COMMON_Q_NOFF, 2, 1, "Q_NOFF" },
{ VIRTIO_PCI_COMMON_Q_DESCLO, 4, 0, "Q_DESCLO" },
{ VIRTIO_PCI_COMMON_Q_DESCHI, 4, 0, "Q_DESCHI" },
{ VIRTIO_PCI_COMMON_Q_AVAILLO, 4, 0, "Q_AVAILLO" },
{ VIRTIO_PCI_COMMON_Q_AVAILHI, 4, 0, "Q_AVAILHI" },
{ VIRTIO_PCI_COMMON_Q_USEDLO, 4, 0, "Q_USEDLO" },
{ VIRTIO_PCI_COMMON_Q_USEDHI, 4, 0, "Q_USEDHI" },
};
static inline const struct config_reg *
@ -769,9 +769,9 @@ virtio_pci_legacy_read(struct vmctx *ctx, int vcpu, struct pci_vdev *dev,
goto bad;
if (pci_msix_enabled(dev))
virtio_config_size = VIRTIO_CR_CFG1;
virtio_config_size = VIRTIO_PCI_CONFIG_OFF(1);
else
virtio_config_size = VIRTIO_CR_CFG0;
virtio_config_size = VIRTIO_PCI_CONFIG_OFF(0);
if (offset >= virtio_config_size) {
/*
@ -806,39 +806,39 @@ bad:
}
switch (offset) {
case VIRTIO_CR_HOSTCAP:
case VIRTIO_PCI_HOST_FEATURES:
value = base->device_caps;
break;
case VIRTIO_CR_GUESTCAP:
case VIRTIO_PCI_GUEST_FEATURES:
value = base->negotiated_caps;
break;
case VIRTIO_CR_PFN:
case VIRTIO_PCI_QUEUE_PFN:
if (base->curq < vops->nvq)
value = base->queues[base->curq].pfn;
break;
case VIRTIO_CR_QNUM:
case VIRTIO_PCI_QUEUE_NUM:
value = base->curq < vops->nvq ?
base->queues[base->curq].qsize : 0;
break;
case VIRTIO_CR_QSEL:
case VIRTIO_PCI_QUEUE_SEL:
value = base->curq;
break;
case VIRTIO_CR_QNOTIFY:
case VIRTIO_PCI_QUEUE_NOTIFY:
value = 0; /* XXX */
break;
case VIRTIO_CR_STATUS:
case VIRTIO_PCI_STATUS:
value = base->status;
break;
case VIRTIO_CR_ISR:
case VIRTIO_PCI_ISR:
value = base->isr;
base->isr = 0; /* a read clears this flag */
if (value)
pci_lintr_deassert(dev);
break;
case VIRTIO_CR_CFGVEC:
case VIRTIO_MSI_CONFIG_VECTOR:
value = base->msix_cfg_idx;
break;
case VIRTIO_CR_QVEC:
case VIRTIO_MSI_QUEUE_VECTOR:
value = base->curq < vops->nvq ?
base->queues[base->curq].msix_idx :
VIRTIO_MSI_NO_VECTOR;
@ -882,9 +882,9 @@ virtio_pci_legacy_write(struct vmctx *ctx, int vcpu, struct pci_vdev *dev,
goto bad;
if (pci_msix_enabled(dev))
virtio_config_size = VIRTIO_CR_CFG1;
virtio_config_size = VIRTIO_PCI_CONFIG_OFF(1);
else
virtio_config_size = VIRTIO_CR_CFG0;
virtio_config_size = VIRTIO_PCI_CONFIG_OFF(0);
if (offset >= virtio_config_size) {
/*
@ -923,18 +923,18 @@ bad:
}
switch (offset) {
case VIRTIO_CR_GUESTCAP:
case VIRTIO_PCI_GUEST_FEATURES:
base->negotiated_caps = value & base->device_caps;
if (vops->apply_features)
(*vops->apply_features)(DEV_STRUCT(base),
base->negotiated_caps);
break;
case VIRTIO_CR_PFN:
case VIRTIO_PCI_QUEUE_PFN:
if (base->curq >= vops->nvq)
goto bad_qindex;
virtio_vq_init(base, value);
break;
case VIRTIO_CR_QSEL:
case VIRTIO_PCI_QUEUE_SEL:
/*
* Note that the guest is allowed to select an
* invalid queue; we just need to return a QNUM
@ -942,7 +942,7 @@ bad:
*/
base->curq = value;
break;
case VIRTIO_CR_QNOTIFY:
case VIRTIO_PCI_QUEUE_NOTIFY:
if (value >= vops->nvq) {
fprintf(stderr, "%s: queue %d notify out of range\r\n",
name, (int)value);
@ -958,13 +958,13 @@ bad:
"%s: qnotify queue %d: missing vq/vops notify\r\n",
name, (int)value);
break;
case VIRTIO_CR_STATUS:
case VIRTIO_PCI_STATUS:
base->status = value;
if (vops->set_status)
(*vops->set_status)(DEV_STRUCT(base), value);
if (value == 0)
(*vops->reset)(DEV_STRUCT(base));
if ((value & VIRTIO_CR_STATUS_DRIVER_OK) &&
if ((value & VIRTIO_CONFIG_S_DRIVER_OK) &&
base->backend_type == BACKEND_VBSU &&
virtio_poll_enabled) {
base->polling_timer.clockid = CLOCK_MONOTONIC;
@ -976,10 +976,10 @@ bad:
virtio_start_timer(&base->polling_timer, 5, 0);
}
break;
case VIRTIO_CR_CFGVEC:
case VIRTIO_MSI_CONFIG_VECTOR:
base->msix_cfg_idx = value;
break;
case VIRTIO_CR_QVEC:
case VIRTIO_MSI_QUEUE_VECTOR:
if (base->curq >= vops->nvq)
goto bad_qindex;
vq = &base->queues[base->curq];
@ -1154,7 +1154,7 @@ virtio_set_modern_bar(struct virtio_base *base, bool use_notify_pio)
vops = base->vops;
if (!vops || (base->device_caps & ACRN_VIRTIO_F_VERSION_1) == 0)
if (!vops || (base->device_caps & (1UL << VIRTIO_F_VERSION_1)) == 0)
return -1;
if (use_notify_pio)
@ -1181,12 +1181,12 @@ virtio_set_modern_bar(struct virtio_base *base, bool use_notify_pio)
void
virtio_dev_error(struct virtio_base *base)
{
if (base->negotiated_caps & ACRN_VIRTIO_F_VERSION_1) {
if (base->negotiated_caps & (1UL << VIRTIO_F_VERSION_1)) {
/* see 2.1.2. if DRIVER_OK is set, need to send
* a device configuration change notification to the driver
*/
base->status |= VIRTIO_CR_STATUS_NEEDS_RESET;
if (base->status & VIRTIO_CR_STATUS_DRIVER_OK)
base->status |= VIRTIO_CONFIG_S_NEEDS_RESET;
if (base->status & VIRTIO_CONFIG_S_DRIVER_OK)
virtio_config_changed(base);
}
}
@ -1251,10 +1251,10 @@ virtio_common_cfg_read(struct pci_vdev *dev, uint64_t offset, int size)
}
switch (offset) {
case VIRTIO_COMMON_DFSELECT:
case VIRTIO_PCI_COMMON_DFSELECT:
value = base->device_feature_select;
break;
case VIRTIO_COMMON_DF:
case VIRTIO_PCI_COMMON_DF:
if (base->device_feature_select == 0)
value = base->device_caps & 0xffffffff;
else if (base->device_feature_select == 1)
@ -1262,10 +1262,10 @@ virtio_common_cfg_read(struct pci_vdev *dev, uint64_t offset, int size)
else /* present 0, see 4.1.4.3.1 */
value = 0;
break;
case VIRTIO_COMMON_GFSELECT:
case VIRTIO_PCI_COMMON_GFSELECT:
value = base->driver_feature_select;
break;
case VIRTIO_COMMON_GF:
case VIRTIO_PCI_COMMON_GF:
/* see 4.1.4.3.1. Present any valid feature bits the driver
* has written in driver_feature. Valid feature bits are those
* which are subset of the corresponding device_feature bits
@ -1277,58 +1277,58 @@ virtio_common_cfg_read(struct pci_vdev *dev, uint64_t offset, int size)
else
value = 0;
break;
case VIRTIO_COMMON_MSIX:
case VIRTIO_PCI_COMMON_MSIX:
value = base->msix_cfg_idx;
break;
case VIRTIO_COMMON_NUMQ:
case VIRTIO_PCI_COMMON_NUMQ:
value = vops->nvq;
break;
case VIRTIO_COMMON_STATUS:
case VIRTIO_PCI_COMMON_STATUS:
value = base->status;
break;
case VIRTIO_COMMON_CFGGENERATION:
case VIRTIO_PCI_COMMON_CFGGENERATION:
value = base->config_generation;
break;
case VIRTIO_COMMON_Q_SELECT:
case VIRTIO_PCI_COMMON_Q_SELECT:
value = base->curq;
break;
case VIRTIO_COMMON_Q_SIZE:
case VIRTIO_PCI_COMMON_Q_SIZE:
value = base->curq < vops->nvq ?
base->queues[base->curq].qsize : 0;
break;
case VIRTIO_COMMON_Q_MSIX:
case VIRTIO_PCI_COMMON_Q_MSIX:
value = base->curq < vops->nvq ?
base->queues[base->curq].msix_idx :
VIRTIO_MSI_NO_VECTOR;
break;
case VIRTIO_COMMON_Q_ENABLE:
case VIRTIO_PCI_COMMON_Q_ENABLE:
value = base->curq < vops->nvq ?
base->queues[base->curq].enabled : 0;
break;
case VIRTIO_COMMON_Q_NOFF:
case VIRTIO_PCI_COMMON_Q_NOFF:
value = base->curq;
break;
case VIRTIO_COMMON_Q_DESCLO:
case VIRTIO_PCI_COMMON_Q_DESCLO:
value = base->curq < vops->nvq ?
base->queues[base->curq].gpa_desc[0] : 0;
break;
case VIRTIO_COMMON_Q_DESCHI:
case VIRTIO_PCI_COMMON_Q_DESCHI:
value = base->curq < vops->nvq ?
base->queues[base->curq].gpa_desc[1] : 0;
break;
case VIRTIO_COMMON_Q_AVAILLO:
case VIRTIO_PCI_COMMON_Q_AVAILLO:
value = base->curq < vops->nvq ?
base->queues[base->curq].gpa_avail[0] : 0;
break;
case VIRTIO_COMMON_Q_AVAILHI:
case VIRTIO_PCI_COMMON_Q_AVAILHI:
value = base->curq < vops->nvq ?
base->queues[base->curq].gpa_avail[1] : 0;
break;
case VIRTIO_COMMON_Q_USEDLO:
case VIRTIO_PCI_COMMON_Q_USEDLO:
value = base->curq < vops->nvq ?
base->queues[base->curq].gpa_used[0] : 0;
break;
case VIRTIO_COMMON_Q_USEDHI:
case VIRTIO_PCI_COMMON_Q_USEDHI:
value = base->curq < vops->nvq ?
base->queues[base->curq].gpa_used[1] : 0;
break;
@ -1372,14 +1372,14 @@ virtio_common_cfg_write(struct pci_vdev *dev, uint64_t offset, int size,
}
switch (offset) {
case VIRTIO_COMMON_DFSELECT:
case VIRTIO_PCI_COMMON_DFSELECT:
base->device_feature_select = value;
break;
case VIRTIO_COMMON_GFSELECT:
case VIRTIO_PCI_COMMON_GFSELECT:
base->driver_feature_select = value;
break;
case VIRTIO_COMMON_GF:
if (base->status & VIRTIO_CR_STATUS_DRIVER_OK)
case VIRTIO_PCI_COMMON_GF:
if (base->status & VIRTIO_CONFIG_S_DRIVER_OK)
break;
if (base->driver_feature_select < 2) {
value &= 0xffffffff;
@ -1391,10 +1391,10 @@ virtio_common_cfg_write(struct pci_vdev *dev, uint64_t offset, int size,
base->negotiated_caps);
}
break;
case VIRTIO_COMMON_MSIX:
case VIRTIO_PCI_COMMON_MSIX:
base->msix_cfg_idx = value;
break;
case VIRTIO_COMMON_STATUS:
case VIRTIO_PCI_COMMON_STATUS:
base->status = value & 0xff;
if (vops->set_status)
(*vops->set_status)(DEV_STRUCT(base), value);
@ -1402,7 +1402,7 @@ virtio_common_cfg_write(struct pci_vdev *dev, uint64_t offset, int size,
(*vops->reset)(DEV_STRUCT(base));
/* TODO: virtio poll mode for modern devices */
break;
case VIRTIO_COMMON_Q_SELECT:
case VIRTIO_PCI_COMMON_Q_SELECT:
/*
* Note that the guest is allowed to select an
* invalid queue; we just need to return a QNUM
@ -1410,54 +1410,54 @@ virtio_common_cfg_write(struct pci_vdev *dev, uint64_t offset, int size,
*/
base->curq = value;
break;
case VIRTIO_COMMON_Q_SIZE:
case VIRTIO_PCI_COMMON_Q_SIZE:
if (base->curq >= vops->nvq)
goto bad_qindex;
vq = &base->queues[base->curq];
vq->qsize = value;
break;
case VIRTIO_COMMON_Q_MSIX:
case VIRTIO_PCI_COMMON_Q_MSIX:
if (base->curq >= vops->nvq)
goto bad_qindex;
vq = &base->queues[base->curq];
vq->msix_idx = value;
break;
case VIRTIO_COMMON_Q_ENABLE:
case VIRTIO_PCI_COMMON_Q_ENABLE:
if (base->curq >= vops->nvq)
goto bad_qindex;
virtio_vq_enable(base);
break;
case VIRTIO_COMMON_Q_DESCLO:
case VIRTIO_PCI_COMMON_Q_DESCLO:
if (base->curq >= vops->nvq)
goto bad_qindex;
vq = &base->queues[base->curq];
vq->gpa_desc[0] = value;
break;
case VIRTIO_COMMON_Q_DESCHI:
case VIRTIO_PCI_COMMON_Q_DESCHI:
if (base->curq >= vops->nvq)
goto bad_qindex;
vq = &base->queues[base->curq];
vq->gpa_desc[1] = value;
break;
case VIRTIO_COMMON_Q_AVAILLO:
case VIRTIO_PCI_COMMON_Q_AVAILLO:
if (base->curq >= vops->nvq)
goto bad_qindex;
vq = &base->queues[base->curq];
vq->gpa_avail[0] = value;
break;
case VIRTIO_COMMON_Q_AVAILHI:
case VIRTIO_PCI_COMMON_Q_AVAILHI:
if (base->curq >= vops->nvq)
goto bad_qindex;
vq = &base->queues[base->curq];
vq->gpa_avail[1] = value;
break;
case VIRTIO_COMMON_Q_USEDLO:
case VIRTIO_PCI_COMMON_Q_USEDLO:
if (base->curq >= vops->nvq)
goto bad_qindex;
vq = &base->queues[base->curq];
vq->gpa_used[0] = value;
break;
case VIRTIO_COMMON_Q_USEDHI:
case VIRTIO_PCI_COMMON_Q_USEDHI:
if (base->curq >= vops->nvq)
goto bad_qindex;
vq = &base->queues[base->curq];
@ -1999,4 +1999,4 @@ acrn_parse_virtio_poll_interval(const char *optarg)
virtio_poll_enabled = 1;
return 0;
}
}

2
devicemodel/hw/pci/virtio/virtio_audio.c
View File

@ -224,7 +224,7 @@ virtio_audio_k_set_status(void *base, uint64_t status)
nvq = virt_audio->base.vops->nvq;
if (virt_audio->vbs_k.kstatus == VIRTIO_DEV_INIT_SUCCESS &&
(status & VIRTIO_CR_STATUS_DRIVER_OK)) {
(status & VIRTIO_CONFIG_S_DRIVER_OK)) {
/* time to kickoff VBS-K side */
/* init vdev first */
rc = virtio_audio_kernel_dev_set(

8
devicemodel/hw/pci/virtio/virtio_block.c
View File

@ -65,7 +65,7 @@
(VIRTIO_BLK_F_SEG_MAX | \
VIRTIO_BLK_F_BLK_SIZE | \
VIRTIO_BLK_F_TOPOLOGY | \
ACRN_VIRTIO_RING_F_INDIRECT_DESC) /* indirect descriptors */
(1 << VIRTIO_RING_F_INDIRECT_DESC)) /* indirect descriptors */
/*
* Writeback cache bits
@ -218,7 +218,7 @@ virtio_blk_proc(struct virtio_blk *blk, struct virtio_vq_info *vq)
assert(n >= 2 && n <= BLOCKIF_IOV_MAX + 2);
io = &blk->ios[idx];
assert((flags[0] & ACRN_VRING_DESC_F_WRITE) == 0);
assert((flags[0] & VRING_DESC_F_WRITE) == 0);
assert(iov[0].iov_len == sizeof(struct virtio_blk_hdr));
vbh = iov[0].iov_base;
memcpy(&io->req.iov, &iov[1], sizeof(struct iovec) * (n - 2));
@ -226,7 +226,7 @@ virtio_blk_proc(struct virtio_blk *blk, struct virtio_vq_info *vq)
io->req.offset = vbh->sector * DEV_BSIZE;
io->status = iov[--n].iov_base;
assert(iov[n].iov_len == 1);
assert(flags[n] & ACRN_VRING_DESC_F_WRITE);
assert(flags[n] & VRING_DESC_F_WRITE);
/*
* XXX
@ -244,7 +244,7 @@ virtio_blk_proc(struct virtio_blk *blk, struct virtio_vq_info *vq)
* therefore test the inverse of the descriptor bit
* to the op.
*/
assert(((flags[i] & ACRN_VRING_DESC_F_WRITE) == 0) == writeop);
assert(((flags[i] & VRING_DESC_F_WRITE) == 0) == writeop);
iolen += iov[i].iov_len;
}
io->req.resid = iolen;

2
devicemodel/hw/pci/virtio/virtio_console.c
View File

@ -405,7 +405,7 @@ virtio_console_notify_rx(void *vdev, struct virtio_vq_info *vq)
if (!port->rx_ready) {
port->rx_ready = 1;
vq->used->flags |= ACRN_VRING_USED_F_NO_NOTIFY;
vq->used->flags |= VRING_USED_F_NO_NOTIFY;
}
}

2
devicemodel/hw/pci/virtio/virtio_hyper_dmabuf.c
View File

@ -213,7 +213,7 @@ virtio_hyper_dmabuf_set_status(void *base, uint64_t status)
nvq = hyper_dmabuf->base.vops->nvq;
if (kstatus == VIRTIO_DEV_INIT_SUCCESS &&
(status & VIRTIO_CR_STATUS_DRIVER_OK)) {
(status & VIRTIO_CONFIG_S_DRIVER_OK)) {
/* time to kickoff VBS-K side */
/* init vdev first */
rc = virtio_hyper_dmabuf_k_dev_set(

4
devicemodel/hw/pci/virtio/virtio_input.c
View File

@ -47,7 +47,7 @@ static int virtio_input_debug;
/*
* Host capabilities
*/
#define VIRTIO_INPUT_S_HOSTCAPS (ACRN_VIRTIO_F_VERSION_1)
#define VIRTIO_INPUT_S_HOSTCAPS (1UL << VIRTIO_F_VERSION_1)
enum virtio_input_config_select {
VIRTIO_INPUT_CFG_UNSET = 0x00,
@ -170,7 +170,7 @@ virtio_input_set_status(void *vdev, uint64_t status)
{
struct virtio_input *vi = vdev;
if (status & VIRTIO_CR_STATUS_DRIVER_OK) {
if (status & VIRTIO_CONFIG_S_DRIVER_OK) {
if (!vi->ready)
vi->ready = true;
}

2
devicemodel/hw/pci/virtio/virtio_ipu.c
View File

@ -234,7 +234,7 @@ virtio_ipu_set_status(void *base, uint64_t status)
ipu = (struct virtio_ipu *) base;
nvq = ipu->base.vops->nvq;
if (ipu->vbs_k.ipu_kstatus == VIRTIO_DEV_INIT_SUCCESS &&
(status & VIRTIO_CR_STATUS_DRIVER_OK)) {
(status & VIRTIO_CONFIG_S_DRIVER_OK)) {
/* time to kickoff VBS-K side */
/* init vdev first */
rc = virtio_ipu_k_dev_set(

6
devicemodel/hw/pci/virtio/virtio_mei.c
View File

@ -1583,7 +1583,7 @@ vmei_notify_tx(void *data, struct virtio_vq_info *vq)
pthread_mutex_lock(&vmei->tx_mutex);
DPRINTF("TX: New OUT buffer available!\n");
vq->used->flags |= ACRN_VRING_USED_F_NO_NOTIFY;
vq->used->flags |= VRING_USED_F_NO_NOTIFY;
pthread_mutex_unlock(&vmei->tx_mutex);
while (vq_has_descs(vq))
@ -1899,7 +1899,7 @@ static void *vmei_rx_thread(void *param)
if (err || vmei->status == VMEI_STST_DEINIT)
goto out;
}
vq->used->flags |= ACRN_VRING_USED_F_NO_NOTIFY;
vq->used->flags |= VRING_USED_F_NO_NOTIFY;
do {
vmei->rx_need_sched = vmei_proc_rx(vmei, vq);
@ -1926,7 +1926,7 @@ vmei_notify_rx(void *data, struct virtio_vq_info *vq)
/* Signal the rx thread for processing */
pthread_mutex_lock(&vmei->rx_mutex);
DPRINTF("RX: New IN buffer available!\n");
vq->used->flags |= ACRN_VRING_USED_F_NO_NOTIFY;
vq->used->flags |= VRING_USED_F_NO_NOTIFY;
pthread_cond_signal(&vmei->rx_cond);
pthread_mutex_unlock(&vmei->rx_mutex);
}

18
devicemodel/hw/pci/virtio/virtio_net.c
View File

@ -78,12 +78,12 @@
#define VIRTIO_NET_S_HOSTCAPS \
(VIRTIO_NET_F_MAC | VIRTIO_NET_F_MRG_RXBUF | VIRTIO_NET_F_STATUS | \
ACRN_VIRTIO_F_NOTIFY_ON_EMPTY | ACRN_VIRTIO_RING_F_INDIRECT_DESC)
(1 << VIRTIO_F_NOTIFY_ON_EMPTY) | (1 << VIRTIO_RING_F_INDIRECT_DESC))
#define VIRTIO_NET_S_VHOSTCAPS \
(ACRN_VIRTIO_F_NOTIFY_ON_EMPTY | ACRN_VIRTIO_RING_F_INDIRECT_DESC | \
ACRN_VIRTIO_RING_F_EVENT_IDX | VIRTIO_NET_F_MRG_RXBUF | \
ACRN_VIRTIO_F_VERSION_1)
((1 << VIRTIO_F_NOTIFY_ON_EMPTY) | (1 << VIRTIO_RING_F_INDIRECT_DESC) | \
(1 << VIRTIO_RING_F_EVENT_IDX) | VIRTIO_NET_F_MRG_RXBUF | \
(1UL << VIRTIO_F_VERSION_1))
/* is address mcast/bcast? */
#define ETHER_IS_MULTICAST(addr) (*(addr) & 0x01)
@ -476,7 +476,7 @@ virtio_net_ping_rxq(void *vdev, struct virtio_vq_info *vq)
*/
if (net->rx_ready == 0) {
net->rx_ready = 1;
vq->used->flags |= ACRN_VRING_USED_F_NO_NOTIFY;
vq->used->flags |= VRING_USED_F_NO_NOTIFY;
}
}
@ -522,7 +522,7 @@ virtio_net_ping_txq(void *vdev, struct virtio_vq_info *vq)
/* Signal the tx thread for processing */
pthread_mutex_lock(&net->tx_mtx);
vq->used->flags |= ACRN_VRING_USED_F_NO_NOTIFY;
vq->used->flags |= VRING_USED_F_NO_NOTIFY;
if (net->tx_in_progress == 0)
pthread_cond_signal(&net->tx_cond);
pthread_mutex_unlock(&net->tx_mtx);
@ -571,7 +571,7 @@ virtio_net_tx_thread(void *param)
return NULL;
}
}
vq->used->flags |= ACRN_VRING_USED_F_NO_NOTIFY;
vq->used->flags |= VRING_USED_F_NO_NOTIFY;
net->tx_in_progress = 1;
pthread_mutex_unlock(&net->tx_mtx);
@ -935,7 +935,7 @@ virtio_net_set_status(void *vdev, uint64_t status)
return;
if (!net->vhost_net->vhost_started &&
(status & VIRTIO_CR_STATUS_DRIVER_OK)) {
(status & VIRTIO_CONFIG_S_DRIVER_OK)) {
if (net->mevp)
mevent_disable(net->mevp);
@ -945,7 +945,7 @@ virtio_net_set_status(void *vdev, uint64_t status)
return;
}
} else if (net->vhost_net->vhost_started &&
((status & VIRTIO_CR_STATUS_DRIVER_OK) == 0)) {
((status & VIRTIO_CONFIG_S_DRIVER_OK) == 0)) {
rc = vhost_net_stop(net->vhost_net);
if (rc < 0)
WPRINTF(("vhost_net_stop failed\n"));

2
devicemodel/hw/pci/virtio/virtio_rnd.c
View File

@ -141,7 +141,7 @@ virtio_rnd_k_set_status(void *base, uint64_t status)
nvq = rnd->base.vops->nvq;
if (rnd->vbs_k.status == VIRTIO_DEV_INIT_SUCCESS &&
(status & VIRTIO_CR_STATUS_DRIVER_OK)) {
(status & VIRTIO_CONFIG_S_DRIVER_OK)) {
/* time to kickoff VBS-K side */
/* init vdev first */
rc = virtio_rnd_kernel_dev_set(&rnd->vbs_k.dev,

210
devicemodel/include/virtio.h
View File

@ -116,7 +116,7 @@
* The two event fields, <used_event> and <avail_event>, in the
* avail and used rings (respectively -- note the reversal!), are
* always provided, but are used only if the virtual device
* negotiates the ACRN_VIRTIO_RING_F_EVENT_IDX feature during feature
* negotiates the VIRTIO_RING_F_EVENT_IDX feature during feature
* negotiation. Similarly, both rings provide a flag --
* ACRN_VRING_AVAIL_F_NO_INTERRUPT and ACRN_VRING_USED_F_NO_NOTIFY -- in
* their <flags> field, indicating that the guest does not need an
@ -126,6 +126,10 @@
* not be implemented.)
*/
#include <linux/virtio_ring.h>
#include <linux/virtio_config.h>
#include <linux/virtio_pci.h>
#include "types.h"
#include "timer.h"
@ -136,42 +140,6 @@
* @{
*/
#define VRING_ALIGN 4096
#define ACRN_VRING_DESC_F_NEXT (1 << 0)
#define ACRN_VRING_DESC_F_WRITE (1 << 1)
#define ACRN_VRING_DESC_F_INDIRECT (1 << 2)
struct virtio_desc { /* AKA vring_desc */
uint64_t addr; /* guest physical address */
uint32_t len; /* length of scatter/gather seg */
uint16_t flags; /* VRING_F_DESC_* */
uint16_t next; /* next desc if F_NEXT */
} __attribute__((packed));
struct virtio_used { /* AKA vring_used_elem */
uint32_t idx; /* head of used descriptor chain */
uint32_t tlen; /* length written-to */
} __attribute__((packed));
#define ACRN_VRING_AVAIL_F_NO_INTERRUPT 1
struct virtio_vring_avail {
uint16_t flags; /* VRING_AVAIL_F_* */
uint16_t idx; /* counts to 65535, then cycles */
uint16_t ring[]; /* size N, reported in QNUM value */
/* uint16_t used_event; -- after N ring entries */
} __attribute__((packed));
#define ACRN_VRING_USED_F_NO_NOTIFY 1
struct virtio_vring_used {
uint16_t flags; /* VRING_USED_F_* */
uint16_t idx; /* counts to 65535, then cycles */
struct virtio_used ring[];
/* size N */
/* uint16_t avail_event; -- after N ring entries */
} __attribute__((packed));
enum {
BACKEND_UNKNOWN = 0,
BACKEND_VBSU,
@ -262,94 +230,12 @@ enum {
#define VIRTIO_DEV_COREU 0x8608
/*
* PCI config space constants.
*
* If MSI-X is enabled, the ISR register is generally not used,
* and the configuration vector and queue vector appear at offsets
* 20 and 22 with the remaining configuration registers at 24.
* If MSI-X is not enabled, those two registers disappear and
* the remaining configuration registers start at offset 20.
*/
#define VIRTIO_CR_HOSTCAP 0
#define VIRTIO_CR_GUESTCAP 4
#define VIRTIO_CR_PFN 8
#define VIRTIO_CR_QNUM 12
#define VIRTIO_CR_QSEL 14
#define VIRTIO_CR_QNOTIFY 16
#define VIRTIO_CR_STATUS 18
#define VIRTIO_CR_ISR 19
#define VIRTIO_CR_CFGVEC 20
#define VIRTIO_CR_QVEC 22
#define VIRTIO_CR_CFG0 20 /* No MSI-X */
#define VIRTIO_CR_CFG1 24 /* With MSI-X */
#define VIRTIO_CR_MSIX 20
/*
* Bits in VIRTIO_CR_STATUS. Guests need not actually set any of these,
* but a guest writing 0 to this register means "please reset".
*/
#define VIRTIO_CR_STATUS_ACK 0x01
/* guest OS has acknowledged dev */
#define VIRTIO_CR_STATUS_DRIVER 0x02
/* guest OS driver is loaded */
#define VIRTIO_CR_STATUS_DRIVER_OK 0x04
/* guest OS driver ready */
#define VIRTIO_CR_STATUS_FEATURES_OK 0x08
/* features negotiation complete */
#define VIRTIO_CR_STATUS_NEEDS_RESET 0x40
/* device experienced an error and cannot
* recover, guest driver must reset it
*/
#define VIRTIO_CR_STATUS_FAILED 0x80
/* guest has given up on this dev */
/*
* Bits in VIRTIO_CR_ISR. These apply only if not using MSI-X.
* Bits in VIRTIO_PCI_ISR. These apply only if not using MSI-X.
*
* (We don't [yet?] ever use CONF_CHANGED.)
*/
#define VIRTIO_CR_ISR_QUEUES 0x01
#define VIRTIO_PCI_ISR_QUEUES 0x01
/* re-scan queues */
#define VIRTIO_CR_ISR_CONF_CHANGED 0x02
/* configuration changed */
#define VIRTIO_MSI_NO_VECTOR 0xFFFF
/*
* Feature flags.
* Note: bits 0 through 23 are reserved to each device type.
*/
#define ACRN_VIRTIO_F_NOTIFY_ON_EMPTY (1 << 24)
#define ACRN_VIRTIO_RING_F_INDIRECT_DESC (1 << 28)
#define ACRN_VIRTIO_RING_F_EVENT_IDX (1 << 29)
/* v1.0 compliant. */
#define ACRN_VIRTIO_F_VERSION_1 (1UL << 32)
/* From section 2.3, "Virtqueue Configuration", of the virtio specification */
/**
* @brief Calculate size of a virtual ring, this interface is only valid for
* legacy virtio.
*
* @param qsz Size of raw data in a certain virtqueue.
*
* @return size of a certain virtqueue, in bytes.
*/
static inline size_t
virtio_vring_size(u_int qsz)
{
size_t size;
/* constant 3 below = flags, va_idx, va_used_event */
size = sizeof(struct virtio_desc) * qsz + sizeof(uint16_t) * (3 + qsz);
size = roundup2(size, VRING_ALIGN);
/* constant 3 below = flags, idx, avail_event */
size += sizeof(uint16_t) * 3 + sizeof(struct virtio_used) * qsz;
size = roundup2(size, VRING_ALIGN);
return size;
}
struct vmctx;
struct pci_vdev;
@ -437,76 +323,6 @@ struct virtio_vq_info;
/* PCI configuration access */
#define VIRTIO_PCI_CAP_PCI_CFG 5
#define VIRTIO_COMMON_DFSELECT 0
#define VIRTIO_COMMON_DF 4
#define VIRTIO_COMMON_GFSELECT 8
#define VIRTIO_COMMON_GF 12
#define VIRTIO_COMMON_MSIX 16
#define VIRTIO_COMMON_NUMQ 18
#define VIRTIO_COMMON_STATUS 20
#define VIRTIO_COMMON_CFGGENERATION 21
#define VIRTIO_COMMON_Q_SELECT 22
#define VIRTIO_COMMON_Q_SIZE 24
#define VIRTIO_COMMON_Q_MSIX 26
#define VIRTIO_COMMON_Q_ENABLE 28
#define VIRTIO_COMMON_Q_NOFF 30
#define VIRTIO_COMMON_Q_DESCLO 32
#define VIRTIO_COMMON_Q_DESCHI 36
#define VIRTIO_COMMON_Q_AVAILLO 40
#define VIRTIO_COMMON_Q_AVAILHI 44
#define VIRTIO_COMMON_Q_USEDLO 48
#define VIRTIO_COMMON_Q_USEDHI 52
/* Fields in VIRTIO_PCI_CAP_COMMON_CFG: */
struct virtio_pci_common_cfg {
/* About the whole device. */
uint32_t device_feature_select; /* read-write */
uint32_t device_feature; /* read-only */
uint32_t guest_feature_select; /* read-write */
uint32_t guest_feature; /* read-write */
uint16_t msix_config; /* read-write */
uint16_t num_queues; /* read-only */
uint8_t device_status; /* read-write */
uint8_t config_generation; /* read-only */
/* About a specific virtqueue. */
uint16_t queue_select; /* read-write */
uint16_t queue_size; /* read-write, power of 2. */
uint16_t queue_msix_vector; /* read-write */
uint16_t queue_enable; /* read-write */
uint16_t queue_notify_off; /* read-only */
uint32_t queue_desc_lo; /* read-write */
uint32_t queue_desc_hi; /* read-write */
uint32_t queue_avail_lo; /* read-write */
uint32_t queue_avail_hi; /* read-write */
uint32_t queue_used_lo; /* read-write */
uint32_t queue_used_hi; /* read-write */
};
/* PCI capability header: */
struct virtio_pci_cap {
uint8_t cap_vndr; /* Generic PCI field: PCI_CAP_ID_VNDR */
uint8_t cap_next; /* Generic PCI field: next ptr. */
uint8_t cap_len; /* Generic PCI field: capability length */
uint8_t cfg_type; /* Identifies the structure. */
uint8_t bar; /* Where to find it. */
uint8_t padding[3]; /* Pad to full dword. */
uint32_t offset; /* Offset within bar. */
uint32_t length; /* Length of the structure, in bytes. */
};
/* Fields in VIRTIO_PCI_CAP_NOTIFY_CFG: */
struct virtio_pci_notify_cap {
struct virtio_pci_cap cap;
uint32_t notify_off_multiplier; /* Multiplier for queue_notify_off. */
};
/* Fields in VIRTIO_PCI_CAP_PCI_CFG: */
struct virtio_pci_cfg_cap {
struct virtio_pci_cap cap;
uint8_t pci_cfg_data[4]; /* Data for BAR access. */
};
/**
* @brief Base component to any virtio device
*/
@ -604,11 +420,11 @@ struct virtio_vq_info {
uint32_t pfn; /**< PFN of virt queue (not shifted!) */
volatile struct virtio_desc *desc;
volatile struct vring_desc *desc;
/**< descriptor array */
volatile struct virtio_vring_avail *avail;
volatile struct vring_avail *avail;
/**< the "avail" ring */
volatile struct virtio_vring_used *used;
volatile struct vring_used *used;
/**< the "used" ring */
uint32_t gpa_desc[2]; /**< gpa of descriptors */
@ -669,7 +485,7 @@ vq_interrupt(struct virtio_base *vb, struct virtio_vq_info *vq)
pci_generate_msix(vb->dev, vq->msix_idx);
else {
VIRTIO_BASE_LOCK(vb);
vb->isr |= VIRTIO_CR_ISR_QUEUES;
vb->isr |= VIRTIO_PCI_ISR_QUEUES;
pci_generate_msi(vb->dev, 0);
pci_lintr_assert(vb->dev);
VIRTIO_BASE_UNLOCK(vb);
@ -688,7 +504,7 @@ vq_interrupt(struct virtio_base *vb, struct virtio_vq_info *vq)
static inline void
virtio_config_changed(struct virtio_base *vb)
{
if (!(vb->status & VIRTIO_CR_STATUS_DRIVER_OK))
if (!(vb->status & VIRTIO_CONFIG_S_DRIVER_OK))
return;
vb->config_generation++;
@ -697,7 +513,7 @@ virtio_config_changed(struct virtio_base *vb)
pci_generate_msix(vb->dev, vb->msix_cfg_idx);
else {
VIRTIO_BASE_LOCK(vb);
vb->isr |= VIRTIO_CR_ISR_CONF_CHANGED;
vb->isr |= VIRTIO_PCI_ISR_CONFIG;
pci_generate_msi(vb->dev, 0);
pci_lintr_assert(vb->dev);
VIRTIO_BASE_UNLOCK(vb);