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bhyve: 'xhci,tablet' snapshot fixes

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Permit suspend/resume of a XHCI device model that has not been
attached to by a driver in a guest OS.

Submitted by:	Vitaliy Gusev <gusev.vitaliy@gmail.com>
Differential Revision:	https://reviews.freebsd.org/D26264
This commit is contained in:
John Baldwin 2020-11-28 03:54:48 +00:00
parent e07e3fa3c9
commit 57b0a3aaca
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=368117
1 changed files with 11 additions and 10 deletions
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21
usr.sbin/bhyve/pci_xhci.c
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@ -2251,7 +2251,6 @@ pci_xhci_write(struct vmctx *ctx, int vcpu, struct pci_devinst *pi,
assert(baridx == 0);
pthread_mutex_lock(&sc->mtx);
if (offset < XHCI_CAPLEN) /* read only registers */
WPRINTF(("pci_xhci: write RO-CAPs offset %ld", offset));
@ -2981,11 +2980,11 @@ pci_xhci_snapshot(struct vm_snapshot_meta *meta)
/* opregs.cr_p */
SNAPSHOT_GUEST2HOST_ADDR_OR_LEAVE(sc->opregs.cr_p,
XHCI_GADDR_SIZE(sc->opregs.cr_p), false, meta, ret, done);
XHCI_GADDR_SIZE(sc->opregs.cr_p), true, meta, ret, done);
/* opregs.dcbaa_p */
SNAPSHOT_GUEST2HOST_ADDR_OR_LEAVE(sc->opregs.dcbaa_p,
XHCI_GADDR_SIZE(sc->opregs.dcbaa_p), false, meta, ret, done);
XHCI_GADDR_SIZE(sc->opregs.dcbaa_p), true, meta, ret, done);
/* rtsregs */
SNAPSHOT_VAR_OR_LEAVE(sc->rtsregs.mfindex, meta, ret, done);
@ -3000,11 +2999,11 @@ pci_xhci_snapshot(struct vm_snapshot_meta *meta)
/* rtsregs.erstba_p */
SNAPSHOT_GUEST2HOST_ADDR_OR_LEAVE(sc->rtsregs.erstba_p,
XHCI_GADDR_SIZE(sc->rtsregs.erstba_p), false, meta, ret, done);
XHCI_GADDR_SIZE(sc->rtsregs.erstba_p), true, meta, ret, done);
/* rtsregs.erst_p */
SNAPSHOT_GUEST2HOST_ADDR_OR_LEAVE(sc->rtsregs.erst_p,
XHCI_GADDR_SIZE(sc->rtsregs.erst_p), false, meta, ret, done);
XHCI_GADDR_SIZE(sc->rtsregs.erst_p), true, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(sc->rtsregs.er_deq_seg, meta, ret, done);
SNAPSHOT_VAR_OR_LEAVE(sc->rtsregs.er_enq_idx, meta, ret, done);
@ -3090,12 +3089,14 @@ pci_xhci_snapshot(struct vm_snapshot_meta *meta)
continue;
SNAPSHOT_GUEST2HOST_ADDR_OR_LEAVE(dev->dev_ctx,
XHCI_GADDR_SIZE(dev->dev_ctx), false, meta, ret, done);
XHCI_GADDR_SIZE(dev->dev_ctx), true, meta, ret, done);
for (j = 1; j < XHCI_MAX_ENDPOINTS; j++) {
ret = pci_xhci_snapshot_ep(sc, dev, j, meta);
if (ret != 0)
goto done;
if (dev->dev_ctx != NULL) {
for (j = 1; j < XHCI_MAX_ENDPOINTS; j++) {
ret = pci_xhci_snapshot_ep(sc, dev, j, meta);
if (ret != 0)
goto done;
}
}
SNAPSHOT_VAR_OR_LEAVE(dev->dev_slotstate, meta, ret, done);