l4io_device Struct Reference
L4io host device to access physical devices from the host machine. More...
#include <l4io_device.hpp>
Public Member Functions | |
| l4io_device (machine_base &machine, const l4io_pci_dev_t &device, bool same_irq=false) | |
| virtual uint32_t | read_ioport (l4_port_t port, access_size access_size) |
| Stub implementation, which always returns an invalid value. | |
| virtual int | write_ioport (l4_port_t port, uint32_t data, access_size access_size) |
| Stub implementation, which always returns -L4_ENOTSUPP. | |
| virtual l4_hva_t | map_mmio_region (int flags, l4_gpa_t base, l4_gpa_t size=1) |
| Stub implementation, which always returns an invalid value (0). | |
| virtual int | unmap_mmio_region (l4_gpa_t base, l4_gpa_t size=1) |
| Stub implementation, which always returns -L4_ENOTSUPP. | |
| virtual int | reset (void) |
| Resets the device's state back to defaults as when powering up the machine. | |
| virtual l4_umword_t | read_config_space (pci_config_header16::offset_t offset, access_size access_size) |
| Emulates a device's PCI configuration space read access and returns the value that should have been read. | |
| virtual int | write_config_space (pci_config_header16::offset_t offset, l4_umword_t data, access_size access_size) |
| Emulates a device's PCI configuration space write access. | |
Static Public Member Functions | |
| static int | create (vector< pci_device * > &devices, machine_base &machine, config_node &device_node) |
Protected Types | |
|
typedef pci_device_base < l4io_device_config_space > | super_type |
Protected Member Functions | |
| virtual int | ioregion_relocated (uint8_t region_num, l4_gpa_t old_base) |
| Called whenever the PCI configuration space write handler updates an address register. | |
| virtual int | fill_config_space (void) |
| virtual int | search_and_change_iospace_region (l4_port_t port) |
| template<typename WordT> | |
| WordT | read_l4io_config_space (const pci_config_header16::offset_t offset) |
| template<typename WordT> | |
| int | write_l4io_config_space (const pci_config_header16::offset_t offset, const WordT value) |
Protected Attributes | |
| const l4io_pci_dev_t | device |
| bitops | mmio_regions_requested |
| semaphore | device_lock |
Detailed Description
L4io host device to access physical devices from the host machine.Member Function Documentation
| uint32_t l4io_device::read_ioport | ( | l4_port_t | port, | |
| access_size | access_size | |||
| ) | [virtual] |
Stub implementation, which always returns an invalid value.
Implemented here as a dummy to avoid unnecessary overriding in descendant classes. This function is intended to be overridden.
Reimplemented from device_base.
References iospace_handler::INVALID.
| int l4io_device::write_ioport | ( | l4_port_t | port, | |
| uint32_t | data, | |||
| access_size | access_size | |||
| ) | [virtual] |
Stub implementation, which always returns -L4_ENOTSUPP.
Implemented here as a dummy to avoid unnecessary overriding in descendant classes. This function is intended to be overridden.
Reimplemented from device_base.
| l4_hva_t l4io_device::map_mmio_region | ( | int | flags, | |
| l4_gpa_t | base, | |||
| l4_gpa_t | size = 1 | |||
| ) | [virtual] |
Stub implementation, which always returns an invalid value (0).
Implemented here as a dummy to avoid unnecessary overriding in descendant classes. This function is intended to be overridden.
Reimplemented from pci_device_base< l4io_device_config_space >.
References pci_ioregion::IOMEMORY, pci_device_base< l4io_device_config_space >::ioregions, pci_ioregion::is(), pci_ioregion::is_iomemory(), pci_ioregion::is_used(), pci_device::search_result::is_valid(), pci_device_base< l4io_device_config_space >::map_mmio_region(), pci_ioregion::MEM, pci_ioregion::MEM_PREFETCH, pci_device_base< l4io_device_config_space >::name(), pci_ioregion::print(), pci_device::search_result::region_num, memory_manager::request_mmio_region(), pci_device_base< l4io_device_config_space >::search_ioregion(), and pci_ioregion::virtual_base.
| int l4io_device::unmap_mmio_region | ( | l4_gpa_t | base, | |
| l4_gpa_t | size = 1 | |||
| ) | [virtual] |
Stub implementation, which always returns -L4_ENOTSUPP.
Implemented here as a dummy to avoid unnecessary overriding in descendant classes. This function is intended to be overridden.
Reimplemented from pci_device_base< l4io_device_config_space >.
References pci_ioregion::IOMEMORY, pci_device_base< l4io_device_config_space >::ioregions, pci_ioregion::is_iomemory(), pci_ioregion::is_used(), pci_device::search_result::is_valid(), pci_device_base< l4io_device_config_space >::name(), pci_ioregion::print(), pci_device::search_result::region_num, memory_manager::release_mmio_region(), pci_device_base< l4io_device_config_space >::search_ioregion(), pci_device_base< l4io_device_config_space >::unmap_mmio_region(), and pci_ioregion::virtual_base.
| l4_umword_t l4io_device::read_config_space | ( | pci_config_header16::offset_t | offset, | |
| access_size | access_size | |||
| ) | [virtual] |
Emulates a device's PCI configuration space read access and returns the value that should have been read.
This function is intended to be overridden.
Reimplemented from pci_device_base< l4io_device_config_space >.
References pci_device_base< l4io_device_config_space >::config_space, pci_device_base< l4io_device_config_space >::name(), and pci_device_base< l4io_device_config_space >::read_config_space().
| int l4io_device::write_config_space | ( | pci_config_header16::offset_t | offset, | |
| l4_umword_t | data, | |||
| access_size | access_size | |||
| ) | [virtual] |
Emulates a device's PCI configuration space write access.
This function is intended to be overridden.
Reimplemented from pci_device_base< l4io_device_config_space >.
References pci_ioregion::base2bar(), pci_device_base< l4io_device_config_space >::config_space, pci_device_base< l4io_device_config_space >::ioregions, pci_ioregion::is_iospace(), pci_device_base< l4io_device_config_space >::name(), pci_device_base< l4io_device_config_space >::offset2region_num(), pci_ioregion::size2bar(), and pci_device_base< l4io_device_config_space >::write_config_space().
| int l4io_device::ioregion_relocated | ( | uint8_t | region_num, | |
| l4_gpa_t | old_base | |||
| ) | [protected, virtual] |
Called whenever the PCI configuration space write handler updates an address register.
The corresponding pci_ioregion has already been updated. Only resources may be freed/(re-)requested to respond to the new location's accesses. The default implementation simply unregisters and registers itself.
Reimplemented from pci_device_base< l4io_device_config_space >.
References pci_device_base< l4io_device_config_space >::ioregion_relocated(), pci_device_base< l4io_device_config_space >::ioregions, pci_ioregion::is_iospace(), pci_device_base< l4io_device_config_space >::name(), and pci_ioregion::print().
The documentation for this struct was generated from the following files:
- l4io_device.hpp
- l4io_device.cpp