Lines Matching +full:system +full:- +full:bus
30 .Nd generic PCI/PCIe bus driver
32 To compile the PCI bus driver into the kernel,
35 .Bd -ragged -offset indent
40 .Pq SR-IOV :
41 .Bd -ragged -offset indent
45 To compile in support for native PCI-express HotPlug:
46 .Bd -ragged -offset indent
77 configuration registers, system administrators should exercise caution when
85 to modify system state if the file descriptor was opened for writing.
91 or a BAR read access could have function-specific side-effects.
113 driver also includes support for PCI-PCI bridges,
114 various platform-specific Host-PCI bridges,
126 .Bl -tag -width 012345678901234
135 devices in the system, or on
147 .Bl -tag -width match_buf_len
149 The length, in bytes, of the buffer filled with user-supplied patterns.
151 The number of user-supplied patterns.
153 Pointer to a buffer filled with user-supplied patterns.
162 .Bl -tag -width pd_vendor
165 domain, bus, slot and function.
203 .Bl -tag -width pc_subvendor
206 domain, bus, slot and function.
264 .Bl -ohang
302 configuration registers specified by the passed-in
308 .Bl -tag -width pi_width
312 structure which specifies the domain, bus, slot and function the user would
314 If the specific bus is not found, errno will be set to ENODEV and -1 returned
324 3-byte reads and reads larger than 4 bytes are
335 configuration registers specified in the passed-in
350 device specified in the passed-in
370 the memory-mapped PCI BAR into its address space.
374 .Bl -tag -width Vt struct pcise pbm_sel
404 Regular memory-like BAR should be mapped with
410 .Bl -tag -width PCIIO_BAR_MMAP_ACTIVATE
423 Without the flag, read-only mapping is established.
424 Note that it is common for the device registers to have side-effects
438 .Bl -tag
453 1-byte, 2-byte, 4-byte and 8-byte perations are supported.
476 tunable to a non-zero value.
477 .Bl -tag -width indent
479 Ignore any firmware-assigned memory and I/O port resources.
485 Ignore any firmware-assigned bus number registers in PCI-PCI bridges.
488 bus driver and PCI-PCI bridge driver to allocate bus numbers for secondary
489 buses behind PCI-PCI bridges.
491 Ignore any firmware-assigned memory and I/O port resource windows in PCI-PCI
493 This forces the PCI-PCI bridge driver to allocate memory and I/O port resources
496 By default the PCI-PCI bridge driver will allocate windows that
497 contain the firmware-assigned resources devices behind the bridge.
498 In addition, the PCI-PCI bridge driver will suballocate from existing window
505 must be enabled to fully ignore firmware-supplied resource assignments.
506 .It Va hw.pci.default_vgapci_unit Pq Defaults to -1
510 VGA adapter encountered by the system is assumed to be the boot display device.
520 .Bl -tag -width indent
543 devices into the fully powered state when resuming either the system or an
545 Setting this to zero is discouraged as the system will not attempt to power
546 up non-powered PCI devices after a suspend.
550 devices into a low power state when suspending either the system or individual
553 but firmware may override the desired power state during a system suspend.
555 Enable support for PCI-express Alternative RID Interpretation.
556 This is often used in conjunction with SR-IOV.
559 firmware-assigned memory or I/O port resources.
564 This enables decoding for such resources during bus probe.
571 .Pq MSI-X .
572 MSI-X interrupts can be disabled by setting this tunable to 0.
574 Enable support for PCI-express Electromechanical Interlock.
576 Enable support for native PCI-express HotPlug.
578 MSI and MSI-X interrupts are disabled for certain chipsets known to have
579 broken MSI and MSI-X implementations when this tunable is set.
580 It can be set to zero to permit use of MSI and MSI-X interrupts if the
584 used when creating Virtual Functions via SR-IOV.
589 for any memory or I/O port resources with firmware-assigned ranges that
603 .Bl -tag -width indent
609 The bus address of the PCI device in decimal.
630 Devices may be wired to a Bus / Slot / Function (BSF) address.
642 .Bl -tag -width -indent
649 The bus address of the PCI device in decimal.
668 .Bd -literal
675 at PCI bus 14 slot 0 function 0,
679 device at PCI bus 6 slot 0 function 0,
690 Any number of changes to the devices within the system can cause
701 .Bd -literal
715 .Bl -tag -width /dev/pci -compact
732 Support for device listing and matching was re-implemented by