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87842989f8
Add the ioctl PCIOCBARMMAP on /dev/pci to conveniently create userspace mapping of a PCI device BAR. This is enormously superior to read the BAR value with PCIOCREAD and then try to mmap /dev/mem, and should allow to automatically activate the mapped BARs when needed in future. Current implementation creates new sg pager for each user mmap request. If the pointer (and reference) to a managed device pager is stored in pci_map, we would be able to revoke all mappings on the BAR deactivation or relocation. This is related to the unimplemented BAR activation on mmap, and is postponed for the future. Discussed with: imp, jhb Sponsored by: The FreeBSD Foundation, Mellanox Technologies MFC after: 2 weeks Differential revision: https://reviews.freebsd.org/D15583 |
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| .. | ||
| fixup_pci.c | ||
| hostb_pci.c | ||
| ignore_pci.c | ||
| isa_pci.c | ||
| pci.c | ||
| pci_host_generic.c | ||
| pci_host_generic.h | ||
| pci_host_generic_acpi.c | ||
| pci_host_generic_fdt.c | ||
| pci_host_generic_fdt.h | ||
| pci_if.m | ||
| pci_iov.c | ||
| pci_iov.h | ||
| pci_iov_if.m | ||
| pci_iov_private.h | ||
| pci_iov_schema.c | ||
| pci_pci.c | ||
| pci_private.h | ||
| pci_subr.c | ||
| pci_user.c | ||
| pcib_if.m | ||
| pcib_private.h | ||
| pcib_support.c | ||
| pcireg.h | ||
| pcivar.h | ||
| schema_private.h | ||
| vga_pci.c | ||