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Diffstat (limited to 'c-user/config/index.rst')
| -rw-r--r-- | c-user/config/index.rst | 53 |
1 files changed, 1 insertions, 52 deletions
diff --git a/c-user/config/index.rst b/c-user/config/index.rst index 1413920..a389d71 100644 --- a/c-user/config/index.rst +++ b/c-user/config/index.rst @@ -26,58 +26,7 @@ Configuring a System scheduler-clustered device-driver mpci - -PCI Library Configuration -========================= - -This section defines the system configuration parameters supported by -``rtems/confdefs.h`` related to configuring the PCI Library for RTEMS. - -The PCI Library startup behaviour can be configured in four different ways -depending on how ``CONFIGURE_PCI_CONFIG_LIB`` is defined: - -.. index:: PCI_LIB_AUTO - -``PCI_LIB_AUTO`` - Used to enable the PCI auto configuration software. PCI will be automatically - probed, PCI buses enumerated, all devices and bridges will be initialized - using Plug & Play software routines. The PCI device tree will be populated - based on the PCI devices found in the system, PCI devices will be configured - by allocating address region resources automatically in PCI space according - to the BSP or host bridge driver set up. - -.. index:: PCI_LIB_READ - -``PCI_LIB_READ`` - Used to enable the PCI read configuration software. The current PCI - configuration is read to create the RAM representation (the PCI device tree) - of the PCI devices present. PCI devices are assumed to already have been - initialized and PCI buses enumerated, it is therefore required that a BIOS or - a boot loader has set up configuration space prior to booting into RTEMS. - -.. index:: PCI_LIB_STATIC - -``PCI_LIB_STATIC`` - Used to enable the PCI static configuration software. The user provides a PCI - tree with information how all PCI devices are to be configured at compile - time by linking in a custom ``struct pci_bus pci_hb`` tree. The static PCI - library will not probe PCI for devices, instead it will assume that all - devices defined by the user are present, it will enumerate the PCI buses and - configure all PCI devices in static configuration accordingly. Since probe - and allocation software is not needed the startup is faster, has smaller - footprint and does not require dynamic memory allocation. - -.. index:: PCI_LIB_PERIPHERAL - -``PCI_LIB_PERIPHERAL`` - Used to enable the PCI peripheral configuration. It is similar to - ``PCI_LIB_STATIC``, but it will never write the configuration to the PCI - devices since PCI peripherals are not allowed to access PCI configuration - space. - -Note that selecting ``PCI_LIB_STATIC`` or ``PCI_LIB_PERIPHERAL`` but not -defining ``pci_hb`` will reuslt in link errors. Note also that in these modes -Plug & Play is not performed. + libpci Event Recording Configuration ============================= |