diff options
Diffstat (limited to 'src/arch/x86/interface/pcbios/pcicloud.c')
| -rw-r--r-- | src/arch/x86/interface/pcbios/pcicloud.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/src/arch/x86/interface/pcbios/pcicloud.c b/src/arch/x86/interface/pcbios/pcicloud.c deleted file mode 100644 index 98ba38b31..000000000 --- a/src/arch/x86/interface/pcbios/pcicloud.c +++ /dev/null @@ -1,194 +0,0 @@ -/* - * Copyright (C) 2022 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 (at your option) 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 <stdint.h> -#include <ipxe/init.h> -#include <ipxe/pci.h> -#include <ipxe/ecam.h> -#include <ipxe/pcibios.h> -#include <ipxe/pcidirect.h> -#include <ipxe/pcicloud.h> - -/** @file - * - * Cloud VM PCI configuration space access - * - */ - -/** Selected PCI configuration space access API */ -static struct pci_api *pcicloud = &ecam_api; - -/** - * Find next PCI bus:dev.fn address range in system - * - * @v busdevfn Starting PCI bus:dev.fn address - * @v range PCI bus:dev.fn address range to fill in - */ -static void pcicloud_discover ( uint32_t busdevfn, struct pci_range *range ) { - - pcicloud->pci_discover ( busdevfn, range ); -} - -/** - * Read byte from PCI configuration space - * - * @v pci PCI device - * @v where Location within PCI configuration space - * @v value Value read - * @ret rc Return status code - */ -static int pcicloud_read_config_byte ( struct pci_device *pci, - unsigned int where, uint8_t *value ) { - - return pcicloud->pci_read_config_byte ( pci, where, value ); -} - -/** - * Read 16-bit word from PCI configuration space - * - * @v pci PCI device - * @v where Location within PCI configuration space - * @v value Value read - * @ret rc Return status code - */ -static int pcicloud_read_config_word ( struct pci_device *pci, - unsigned int where, uint16_t *value ) { - - return pcicloud->pci_read_config_word ( pci, where, value ); -} - -/** - * Read 32-bit dword from PCI configuration space - * - * @v pci PCI device - * @v where Location within PCI configuration space - * @v value Value read - * @ret rc Return status code - */ -static int pcicloud_read_config_dword ( struct pci_device *pci, - unsigned int where, uint32_t *value ) { - - return pcicloud->pci_read_config_dword ( pci, where, value ); -} - -/** - * Write byte to PCI configuration space - * - * @v pci PCI device - * @v where Location within PCI configuration space - * @v value Value to be written - * @ret rc Return status code - */ -static int pcicloud_write_config_byte ( struct pci_device *pci, - unsigned int where, uint8_t value ) { - - return pcicloud->pci_write_config_byte ( pci, where, value ); -} - -/** - * Write 16-bit word to PCI configuration space - * - * @v pci PCI device - * @v where Location within PCI configuration space - * @v value Value to be written - * @ret rc Return status code - */ -static int pcicloud_write_config_word ( struct pci_device *pci, - unsigned int where, uint16_t value ) { - - return pcicloud->pci_write_config_word ( pci, where, value ); -} - -/** - * Write 32-bit dword to PCI configuration space - * - * @v pci PCI device - * @v where Location within PCI configuration space - * @v value Value to be written - * @ret rc Return status code - */ -static int pcicloud_write_config_dword ( struct pci_device *pci, - unsigned int where, uint32_t value ) { - - return pcicloud->pci_write_config_dword ( pci, where, value ); -} - -/** - * Map PCI bus address as an I/O address - * - * @v bus_addr PCI bus address - * @v len Length of region - * @ret io_addr I/O address, or NULL on error - */ -static void * pcicloud_ioremap ( struct pci_device *pci, - unsigned long bus_addr, size_t len ) { - - return pcicloud->pci_ioremap ( pci, bus_addr, len ); -} - -PROVIDE_PCIAPI ( cloud, pci_discover, pcicloud_discover ); -PROVIDE_PCIAPI ( cloud, pci_read_config_byte, pcicloud_read_config_byte ); -PROVIDE_PCIAPI ( cloud, pci_read_config_word, pcicloud_read_config_word ); -PROVIDE_PCIAPI ( cloud, pci_read_config_dword, pcicloud_read_config_dword ); -PROVIDE_PCIAPI ( cloud, pci_write_config_byte, pcicloud_write_config_byte ); -PROVIDE_PCIAPI ( cloud, pci_write_config_word, pcicloud_write_config_word ); -PROVIDE_PCIAPI ( cloud, pci_write_config_dword, pcicloud_write_config_dword ); -PROVIDE_PCIAPI ( cloud, pci_ioremap, pcicloud_ioremap ); - -/** - * Initialise cloud VM PCI configuration space access - * - */ -static void pcicloud_init ( void ) { - static struct pci_api *apis[] = { - &ecam_api, &pcibios_api, &pcidirect_api - }; - struct pci_device pci; - uint32_t busdevfn; - unsigned int i; - int rc; - - /* Select first API that successfully discovers a PCI device */ - for ( i = 0 ; i < ( sizeof ( apis ) / sizeof ( apis[0] ) ) ; i++ ) { - pcicloud = apis[i]; - busdevfn = 0; - if ( ( rc = pci_find_next ( &pci, &busdevfn ) ) == 0 ) { - DBGC ( pcicloud, "PCICLOUD selected %s API (found " - PCI_FMT ")\n", pcicloud->name, - PCI_ARGS ( &pci ) ); - return; - } - } - - /* Fall back to using final attempted API if no devices found */ - pcicloud = apis[ i - 1 ]; - DBGC ( pcicloud, "PCICLOUD selected %s API (nothing detected)\n", - pcicloud->name ); -} - -/** Cloud VM PCI configuration space access initialisation function */ -struct init_fn pcicloud_init_fn __init_fn ( INIT_EARLY ) = { - .initialise = pcicloud_init, -}; |