diff options
Diffstat (limited to 'freebsd/sys/dev/pci/pci_user.c')
| -rw-r--r-- | freebsd/sys/dev/pci/pci_user.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/freebsd/sys/dev/pci/pci_user.c b/freebsd/sys/dev/pci/pci_user.c index 3e2c3c7e..bdf8a935 100644 --- a/freebsd/sys/dev/pci/pci_user.c +++ b/freebsd/sys/dev/pci/pci_user.c @@ -858,6 +858,7 @@ pci_bar_mmap(device_t pcidev, struct pci_bar_mmap *pbm) struct thread *td; struct sglist *sg; struct pci_map *pm; + vm_paddr_t membase; vm_paddr_t pbase; vm_size_t plen; vm_offset_t addr; @@ -880,8 +881,9 @@ pci_bar_mmap(device_t pcidev, struct pci_bar_mmap *pbm) return (EBUSY); /* XXXKIB enable if _ACTIVATE */ if (!PCI_BAR_MEM(pm->pm_value)) return (EIO); - pbase = trunc_page(pm->pm_value); - plen = round_page(pm->pm_value + ((pci_addr_t)1 << pm->pm_size)) - + membase = pm->pm_value & PCIM_BAR_MEM_BASE; + pbase = trunc_page(membase); + plen = round_page(membase + ((pci_addr_t)1 << pm->pm_size)) - pbase; prot = VM_PROT_READ | (((pbm->pbm_flags & PCIIO_BAR_MMAP_RW) != 0) ? VM_PROT_WRITE : 0); @@ -913,7 +915,7 @@ pci_bar_mmap(device_t pcidev, struct pci_bar_mmap *pbm) } pbm->pbm_map_base = (void *)addr; pbm->pbm_map_length = plen; - pbm->pbm_bar_off = pm->pm_value - pbase; + pbm->pbm_bar_off = membase - pbase; pbm->pbm_bar_length = (pci_addr_t)1 << pm->pm_size; out: |