diff options
Diffstat (limited to 'usr.sbin/bhyve/pci_ahci.c')
| -rw-r--r-- | usr.sbin/bhyve/pci_ahci.c | 38 |
1 files changed, 23 insertions, 15 deletions
diff --git a/usr.sbin/bhyve/pci_ahci.c b/usr.sbin/bhyve/pci_ahci.c index 68d9bc1..0109975 100644 --- a/usr.sbin/bhyve/pci_ahci.c +++ b/usr.sbin/bhyve/pci_ahci.c @@ -165,6 +165,7 @@ struct ahci_cmd_hdr { struct ahci_prdt_entry { uint64_t dba; uint32_t reserved; +#define DBCMASK 0x3fffff uint32_t dbc; }; @@ -461,10 +462,13 @@ ahci_handle_dma(struct ahci_port *p, int slot, uint8_t *cfis, uint32_t done, * Build up the iovec based on the prdt */ for (i = 0; i < iovcnt; i++) { + uint32_t dbcsz; + + dbcsz = (prdt->dbc & DBCMASK) + 1; breq->br_iov[i].iov_base = paddr_guest2host(ahci_ctx(sc), - prdt->dba, prdt->dbc + 1); - breq->br_iov[i].iov_len = prdt->dbc + 1; - aior->done += (prdt->dbc + 1); + prdt->dba, dbcsz); + breq->br_iov[i].iov_len = dbcsz; + aior->done += dbcsz; prdt++; } if (readop) @@ -513,11 +517,14 @@ write_prdt(struct ahci_port *p, int slot, uint8_t *cfis, from = buf; prdt = (struct ahci_prdt_entry *)(cfis + 0x80); for (i = 0; i < hdr->prdtl && len; i++) { - uint8_t *ptr = paddr_guest2host(ahci_ctx(p->pr_sc), - prdt->dba, prdt->dbc + 1); - memcpy(ptr, from, prdt->dbc + 1); - len -= (prdt->dbc + 1); - from += (prdt->dbc + 1); + uint8_t *ptr; + uint32_t dbcsz; + + dbcsz = (prdt->dbc & DBCMASK) + 1; + ptr = paddr_guest2host(ahci_ctx(p->pr_sc), prdt->dba, dbcsz); + memcpy(ptr, from, dbcsz); + len -= dbcsz; + from += dbcsz; prdt++; } hdr->prdbc = size - len; @@ -908,10 +915,13 @@ atapi_read(struct ahci_port *p, int slot, uint8_t *cfis, * Build up the iovec based on the prdt */ for (i = 0; i < iovcnt; i++) { + uint32_t dbcsz; + + dbcsz = (prdt->dbc & DBCMASK) + 1; breq->br_iov[i].iov_base = paddr_guest2host(ahci_ctx(sc), - prdt->dba, prdt->dbc + 1); - breq->br_iov[i].iov_len = prdt->dbc + 1; - aior->done += (prdt->dbc + 1); + prdt->dba, dbcsz); + breq->br_iov[i].iov_len = dbcsz; + aior->done += dbcsz; prdt++; } err = blockif_read(p->bctx, breq); @@ -1714,11 +1724,9 @@ pci_ahci_init(struct vmctx *ctx, struct pci_devinst *pi, char *opts, int atapi) /* * Attempt to open the backing image. Use the PCI - * slot/func/ahci_port for the identifier string - * since that uniquely identifies a storage device. + * slot/func for the identifier string. */ - snprintf(bident, sizeof(bident), "%d:%d:%d", pi->pi_slot, pi->pi_func, - 0); + snprintf(bident, sizeof(bident), "%d:%d", pi->pi_slot, pi->pi_func); bctxt = blockif_open(opts, bident); if (bctxt == NULL) { ret = 1; |
