diff options
Diffstat (limited to 'qemu/roms/ipxe/src/interface/efi/efi_pci.c')
| -rw-r--r-- | qemu/roms/ipxe/src/interface/efi/efi_pci.c | 361 |
1 files changed, 0 insertions, 361 deletions
diff --git a/qemu/roms/ipxe/src/interface/efi/efi_pci.c b/qemu/roms/ipxe/src/interface/efi/efi_pci.c deleted file mode 100644 index 97ea72bb9..000000000 --- a/qemu/roms/ipxe/src/interface/efi/efi_pci.c +++ /dev/null @@ -1,361 +0,0 @@ -/* - * Copyright (C) 2008 Michael Brown <mbrown@fensystems.co.uk>. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - * You can also choose to distribute this program under the terms of - * the Unmodified Binary Distribution Licence (as given in the file - * COPYING.UBDL), provided that you have satisfied its requirements. - */ - -FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); - -#include <stdlib.h> -#include <errno.h> -#include <ipxe/pci.h> -#include <ipxe/efi/efi.h> -#include <ipxe/efi/efi_pci.h> -#include <ipxe/efi/efi_driver.h> -#include <ipxe/efi/Protocol/PciIo.h> -#include <ipxe/efi/Protocol/PciRootBridgeIo.h> - -/** @file - * - * iPXE PCI I/O API for EFI - * - */ - -/* Disambiguate the various error causes */ -#define EINFO_EEFI_PCI \ - __einfo_uniqify ( EINFO_EPLATFORM, 0x01, \ - "Could not open PCI I/O protocol" ) -#define EINFO_EEFI_PCI_NOT_PCI \ - __einfo_platformify ( EINFO_EEFI_PCI, EFI_UNSUPPORTED, \ - "Not a PCI device" ) -#define EEFI_PCI_NOT_PCI __einfo_error ( EINFO_EEFI_PCI_NOT_PCI ) -#define EINFO_EEFI_PCI_IN_USE \ - __einfo_platformify ( EINFO_EEFI_PCI, EFI_ACCESS_DENIED, \ - "PCI device already has a driver" ) -#define EEFI_PCI_IN_USE __einfo_error ( EINFO_EEFI_PCI_IN_USE ) -#define EEFI_PCI( efirc ) \ - EPLATFORM ( EINFO_EEFI_PCI, efirc, \ - EEFI_PCI_NOT_PCI, EEFI_PCI_IN_USE ) - -/****************************************************************************** - * - * iPXE PCI API - * - ****************************************************************************** - */ - -/** PCI root bridge I/O protocol */ -static EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *efipci; -EFI_REQUEST_PROTOCOL ( EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL, &efipci ); - -static unsigned long efipci_address ( struct pci_device *pci, - unsigned long location ) { - return EFI_PCI_ADDRESS ( PCI_BUS ( pci->busdevfn ), - PCI_SLOT ( pci->busdevfn ), - PCI_FUNC ( pci->busdevfn ), - EFIPCI_OFFSET ( location ) ); -} - -int efipci_read ( struct pci_device *pci, unsigned long location, - void *value ) { - EFI_STATUS efirc; - int rc; - - if ( ! efipci ) - return -ENOTSUP; - - if ( ( efirc = efipci->Pci.Read ( efipci, EFIPCI_WIDTH ( location ), - efipci_address ( pci, location ), 1, - value ) ) != 0 ) { - rc = -EEFI ( efirc ); - DBG ( "EFIPCI config read from " PCI_FMT " offset %02lx " - "failed: %s\n", PCI_ARGS ( pci ), - EFIPCI_OFFSET ( location ), strerror ( rc ) ); - return -EIO; - } - - return 0; -} - -int efipci_write ( struct pci_device *pci, unsigned long location, - unsigned long value ) { - EFI_STATUS efirc; - int rc; - - if ( ! efipci ) - return -ENOTSUP; - - if ( ( efirc = efipci->Pci.Write ( efipci, EFIPCI_WIDTH ( location ), - efipci_address ( pci, location ), 1, - &value ) ) != 0 ) { - rc = -EEFI ( efirc ); - DBG ( "EFIPCI config write to " PCI_FMT " offset %02lx " - "failed: %s\n", PCI_ARGS ( pci ), - EFIPCI_OFFSET ( location ), strerror ( rc ) ); - return -EIO; - } - - return 0; -} - -PROVIDE_PCIAPI_INLINE ( efi, pci_num_bus ); -PROVIDE_PCIAPI_INLINE ( efi, pci_read_config_byte ); -PROVIDE_PCIAPI_INLINE ( efi, pci_read_config_word ); -PROVIDE_PCIAPI_INLINE ( efi, pci_read_config_dword ); -PROVIDE_PCIAPI_INLINE ( efi, pci_write_config_byte ); -PROVIDE_PCIAPI_INLINE ( efi, pci_write_config_word ); -PROVIDE_PCIAPI_INLINE ( efi, pci_write_config_dword ); - -/****************************************************************************** - * - * EFI PCI device instantiation - * - ****************************************************************************** - */ - -/** - * Open EFI PCI device - * - * @v device EFI device handle - * @v attributes Protocol opening attributes - * @v pci PCI device to fill in - * @ret rc Return status code - */ -int efipci_open ( EFI_HANDLE device, UINT32 attributes, - struct pci_device *pci ) { - EFI_BOOT_SERVICES *bs = efi_systab->BootServices; - union { - EFI_PCI_IO_PROTOCOL *pci_io; - void *interface; - } pci_io; - UINTN pci_segment, pci_bus, pci_dev, pci_fn; - EFI_STATUS efirc; - int rc; - - /* See if device is a PCI device */ - if ( ( efirc = bs->OpenProtocol ( device, &efi_pci_io_protocol_guid, - &pci_io.interface, efi_image_handle, - device, attributes ) ) != 0 ) { - rc = -EEFI_PCI ( efirc ); - DBGCP ( device, "EFIPCI %p %s cannot open PCI protocols: %s\n", - device, efi_handle_name ( device ), strerror ( rc ) ); - goto err_open_protocol; - } - - /* Get PCI bus:dev.fn address */ - if ( ( efirc = pci_io.pci_io->GetLocation ( pci_io.pci_io, &pci_segment, - &pci_bus, &pci_dev, - &pci_fn ) ) != 0 ) { - rc = -EEFI ( efirc ); - DBGC ( device, "EFIPCI %p %s could not get PCI location: %s\n", - device, efi_handle_name ( device ), strerror ( rc ) ); - goto err_get_location; - } - DBGC2 ( device, "EFIPCI %p %s is PCI %04lx:%02lx:%02lx.%lx\n", device, - efi_handle_name ( device ), ( ( unsigned long ) pci_segment ), - ( ( unsigned long ) pci_bus ), ( ( unsigned long ) pci_dev ), - ( ( unsigned long ) pci_fn ) ); - - /* Try to enable I/O cycles, memory cycles, and bus mastering. - * Some platforms will 'helpfully' report errors if these bits - * can't be enabled (for example, if the card doesn't actually - * support I/O cycles). Work around any such platforms by - * enabling bits individually and simply ignoring any errors. - */ - pci_io.pci_io->Attributes ( pci_io.pci_io, - EfiPciIoAttributeOperationEnable, - EFI_PCI_IO_ATTRIBUTE_IO, NULL ); - pci_io.pci_io->Attributes ( pci_io.pci_io, - EfiPciIoAttributeOperationEnable, - EFI_PCI_IO_ATTRIBUTE_MEMORY, NULL ); - pci_io.pci_io->Attributes ( pci_io.pci_io, - EfiPciIoAttributeOperationEnable, - EFI_PCI_IO_ATTRIBUTE_BUS_MASTER, NULL ); - - /* Populate PCI device */ - pci_init ( pci, PCI_BUSDEVFN ( pci_bus, pci_dev, pci_fn ) ); - if ( ( rc = pci_read_config ( pci ) ) != 0 ) { - DBGC ( device, "EFIPCI %p %s cannot read PCI configuration: " - "%s\n", device, efi_handle_name ( device ), - strerror ( rc ) ); - goto err_pci_read_config; - } - - return 0; - - err_pci_read_config: - err_get_location: - bs->CloseProtocol ( device, &efi_pci_io_protocol_guid, - efi_image_handle, device ); - err_open_protocol: - return rc; -} - -/** - * Close EFI PCI device - * - * @v device EFI device handle - */ -void efipci_close ( EFI_HANDLE device ) { - EFI_BOOT_SERVICES *bs = efi_systab->BootServices; - - bs->CloseProtocol ( device, &efi_pci_io_protocol_guid, - efi_image_handle, device ); -} - -/** - * Get EFI PCI device information - * - * @v device EFI device handle - * @v pci PCI device to fill in - * @ret rc Return status code - */ -int efipci_info ( EFI_HANDLE device, struct pci_device *pci ) { - int rc; - - /* Open PCI device, if possible */ - if ( ( rc = efipci_open ( device, EFI_OPEN_PROTOCOL_GET_PROTOCOL, - pci ) ) != 0 ) - return rc; - - /* Close PCI device */ - efipci_close ( device ); - - return 0; -} - -/****************************************************************************** - * - * EFI PCI driver - * - ****************************************************************************** - */ - -/** - * Check to see if driver supports a device - * - * @v device EFI device handle - * @ret rc Return status code - */ -static int efipci_supported ( EFI_HANDLE device ) { - struct pci_device pci; - int rc; - - /* Get PCI device information */ - if ( ( rc = efipci_info ( device, &pci ) ) != 0 ) - return rc; - - /* Look for a driver */ - if ( ( rc = pci_find_driver ( &pci ) ) != 0 ) { - DBGCP ( device, "EFIPCI %p %s has no driver\n", - device, efi_handle_name ( device ) ); - return rc; - } - DBGC ( device, "EFIPCI %p %s has driver \"%s\"\n", - device, efi_handle_name ( device ), pci.id->name ); - - return 0; -} - -/** - * Attach driver to device - * - * @v efidev EFI device - * @ret rc Return status code - */ -static int efipci_start ( struct efi_device *efidev ) { - EFI_HANDLE device = efidev->device; - struct pci_device *pci; - int rc; - - /* Allocate PCI device */ - pci = zalloc ( sizeof ( *pci ) ); - if ( ! pci ) { - rc = -ENOMEM; - goto err_alloc; - } - - /* Open PCI device */ - if ( ( rc = efipci_open ( device, ( EFI_OPEN_PROTOCOL_BY_DRIVER | - EFI_OPEN_PROTOCOL_EXCLUSIVE ), - pci ) ) != 0 ) { - DBGC ( device, "EFIPCI %p %s could not open PCI device: %s\n", - device, efi_handle_name ( device ), strerror ( rc ) ); - DBGC_EFI_OPENERS ( device, device, &efi_pci_io_protocol_guid ); - goto err_open; - } - - /* Find driver */ - if ( ( rc = pci_find_driver ( pci ) ) != 0 ) { - DBGC ( device, "EFIPCI %p %s has no driver\n", - device, efi_handle_name ( device ) ); - goto err_find_driver; - } - - /* Mark PCI device as a child of the EFI device */ - pci->dev.parent = &efidev->dev; - list_add ( &pci->dev.siblings, &efidev->dev.children ); - - /* Probe driver */ - if ( ( rc = pci_probe ( pci ) ) != 0 ) { - DBGC ( device, "EFIPCI %p %s could not probe driver \"%s\": " - "%s\n", device, efi_handle_name ( device ), - pci->id->name, strerror ( rc ) ); - goto err_probe; - } - DBGC ( device, "EFIPCI %p %s using driver \"%s\"\n", - device, efi_handle_name ( device ), pci->id->name ); - - efidev_set_drvdata ( efidev, pci ); - return 0; - - pci_remove ( pci ); - err_probe: - list_del ( &pci->dev.siblings ); - err_find_driver: - efipci_close ( device ); - err_open: - free ( pci ); - err_alloc: - return rc; -} - -/** - * Detach driver from device - * - * @v efidev EFI device - */ -static void efipci_stop ( struct efi_device *efidev ) { - struct pci_device *pci = efidev_get_drvdata ( efidev ); - EFI_HANDLE device = efidev->device; - - pci_remove ( pci ); - list_del ( &pci->dev.siblings ); - efipci_close ( device ); - free ( pci ); -} - -/** EFI PCI driver */ -struct efi_driver efipci_driver __efi_driver ( EFI_DRIVER_NORMAL ) = { - .name = "PCI", - .supported = efipci_supported, - .start = efipci_start, - .stop = efipci_stop, -}; |