diff options
Diffstat (limited to 'src/arch/x86/interface/pxeparent/pxeparent.c')
| -rw-r--r-- | src/arch/x86/interface/pxeparent/pxeparent.c | 287 |
1 files changed, 0 insertions, 287 deletions
diff --git a/src/arch/x86/interface/pxeparent/pxeparent.c b/src/arch/x86/interface/pxeparent/pxeparent.c deleted file mode 100644 index cc6101c1..00000000 --- a/src/arch/x86/interface/pxeparent/pxeparent.c +++ /dev/null @@ -1,287 +0,0 @@ -/* - * Copyright (C) 2007 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. - */ - -FILE_LICENCE ( GPL2_OR_LATER ); - -#include <ipxe/dhcp.h> -#include <ipxe/profile.h> -#include <pxeparent.h> -#include <pxe_api.h> -#include <pxe_types.h> -#include <pxe.h> - -/** @file - * - * Call interface to parent PXE stack - * - */ - -/* Disambiguate the various error causes */ -#define EINFO_EPXECALL \ - __einfo_uniqify ( EINFO_EPLATFORM, 0x01, \ - "External PXE API error" ) -#define EPXECALL( status ) EPLATFORM ( EINFO_EPXECALL, status ) - -/** A parent PXE API call profiler */ -struct pxeparent_profiler { - /** Total time spent performing REAL_CALL() */ - struct profiler total; - /** Time spent transitioning to real mode */ - struct profiler p2r; - /** Time spent in external code */ - struct profiler ext; - /** Time spent transitioning back to protected mode */ - struct profiler r2p; -}; - -/** PXENV_UNDI_TRANSMIT profiler */ -static struct pxeparent_profiler pxeparent_tx_profiler __profiler = { - { .name = "pxeparent.tx" }, - { .name = "pxeparent.tx_p2r" }, - { .name = "pxeparent.tx_ext" }, - { .name = "pxeparent.tx_r2p" }, -}; - -/** PXENV_UNDI_ISR profiler - * - * Note that this profiler will not see calls to - * PXENV_UNDI_ISR_IN_START, which are handled by the UNDI ISR and do - * not go via pxeparent_call(). - */ -static struct pxeparent_profiler pxeparent_isr_profiler __profiler = { - { .name = "pxeparent.isr" }, - { .name = "pxeparent.isr_p2r" }, - { .name = "pxeparent.isr_ext" }, - { .name = "pxeparent.isr_r2p" }, -}; - -/** PXE unknown API call profiler - * - * This profiler can be used to measure the overhead of a dummy PXE - * API call. - */ -static struct pxeparent_profiler pxeparent_unknown_profiler __profiler = { - { .name = "pxeparent.unknown" }, - { .name = "pxeparent.unknown_p2r" }, - { .name = "pxeparent.unknown_ext" }, - { .name = "pxeparent.unknown_r2p" }, -}; - -/** Miscellaneous PXE API call profiler */ -static struct pxeparent_profiler pxeparent_misc_profiler __profiler = { - { .name = "pxeparent.misc" }, - { .name = "pxeparent.misc_p2r" }, - { .name = "pxeparent.misc_ext" }, - { .name = "pxeparent.misc_r2p" }, -}; - -/** - * Name PXE API call - * - * @v function API call number - * @ret name API call name - */ -static inline __attribute__ (( always_inline )) const char * -pxeparent_function_name ( unsigned int function ) { - switch ( function ) { - case PXENV_START_UNDI: - return "PXENV_START_UNDI"; - case PXENV_STOP_UNDI: - return "PXENV_STOP_UNDI"; - case PXENV_UNDI_STARTUP: - return "PXENV_UNDI_STARTUP"; - case PXENV_UNDI_CLEANUP: - return "PXENV_UNDI_CLEANUP"; - case PXENV_UNDI_INITIALIZE: - return "PXENV_UNDI_INITIALIZE"; - case PXENV_UNDI_RESET_ADAPTER: - return "PXENV_UNDI_RESET_ADAPTER"; - case PXENV_UNDI_SHUTDOWN: - return "PXENV_UNDI_SHUTDOWN"; - case PXENV_UNDI_OPEN: - return "PXENV_UNDI_OPEN"; - case PXENV_UNDI_CLOSE: - return "PXENV_UNDI_CLOSE"; - case PXENV_UNDI_TRANSMIT: - return "PXENV_UNDI_TRANSMIT"; - case PXENV_UNDI_SET_MCAST_ADDRESS: - return "PXENV_UNDI_SET_MCAST_ADDRESS"; - case PXENV_UNDI_SET_STATION_ADDRESS: - return "PXENV_UNDI_SET_STATION_ADDRESS"; - case PXENV_UNDI_SET_PACKET_FILTER: - return "PXENV_UNDI_SET_PACKET_FILTER"; - case PXENV_UNDI_GET_INFORMATION: - return "PXENV_UNDI_GET_INFORMATION"; - case PXENV_UNDI_GET_STATISTICS: - return "PXENV_UNDI_GET_STATISTICS"; - case PXENV_UNDI_CLEAR_STATISTICS: - return "PXENV_UNDI_CLEAR_STATISTICS"; - case PXENV_UNDI_INITIATE_DIAGS: - return "PXENV_UNDI_INITIATE_DIAGS"; - case PXENV_UNDI_FORCE_INTERRUPT: - return "PXENV_UNDI_FORCE_INTERRUPT"; - case PXENV_UNDI_GET_MCAST_ADDRESS: - return "PXENV_UNDI_GET_MCAST_ADDRESS"; - case PXENV_UNDI_GET_NIC_TYPE: - return "PXENV_UNDI_GET_NIC_TYPE"; - case PXENV_UNDI_GET_IFACE_INFO: - return "PXENV_UNDI_GET_IFACE_INFO"; - /* - * Duplicate case value; this is a bug in the PXE specification. - * - * case PXENV_UNDI_GET_STATE: - * return "PXENV_UNDI_GET_STATE"; - */ - case PXENV_UNDI_ISR: - return "PXENV_UNDI_ISR"; - case PXENV_GET_CACHED_INFO: - return "PXENV_GET_CACHED_INFO"; - default: - return "UNKNOWN API CALL"; - } -} - -/** - * Determine applicable profiler pair (for debugging) - * - * @v function API call number - * @ret profiler Profiler - */ -static struct pxeparent_profiler * pxeparent_profiler ( unsigned int function ){ - - /* Determine applicable profiler */ - switch ( function ) { - case PXENV_UNDI_TRANSMIT: - return &pxeparent_tx_profiler; - case PXENV_UNDI_ISR: - return &pxeparent_isr_profiler; - case PXENV_UNKNOWN: - return &pxeparent_unknown_profiler; - default: - return &pxeparent_misc_profiler; - } -} - -/** - * PXE parent parameter block - * - * Used as the parameter block for all parent PXE API calls. Resides - * in base memory. - */ -static union u_PXENV_ANY __bss16 ( pxeparent_params ); -#define pxeparent_params __use_data16 ( pxeparent_params ) - -/** PXE parent entry point - * - * Used as the indirection vector for all parent PXE API calls. Resides in - * base memory. - */ -SEGOFF16_t __bss16 ( pxeparent_entry_point ); -#define pxeparent_entry_point __use_data16 ( pxeparent_entry_point ) - -/** - * Issue parent PXE API call - * - * @v entry Parent PXE stack entry point - * @v function API call number - * @v params PXE parameter block - * @v params_len Length of PXE parameter block - * @ret rc Return status code - */ -int pxeparent_call ( SEGOFF16_t entry, unsigned int function, - void *params, size_t params_len ) { - struct pxeparent_profiler *profiler = pxeparent_profiler ( function ); - PXENV_EXIT_t exit; - uint32_t before; - uint32_t started; - uint32_t stopped; - uint32_t after; - int discard_D; - int rc; - - /* Copy parameter block and entry point */ - assert ( params_len <= sizeof ( pxeparent_params ) ); - memcpy ( &pxeparent_params, params, params_len ); - memcpy ( &pxeparent_entry_point, &entry, sizeof ( entry ) ); - - /* Call real-mode entry point. This calling convention will - * work with both the !PXE and the PXENV+ entry points. - */ - profile_start ( &profiler->total ); - __asm__ __volatile__ ( REAL_CODE ( "pushl %%ebp\n\t" /* gcc bug */ - "rdtsc\n\t" - "pushl %%eax\n\t" - "pushw %%es\n\t" - "pushw %%di\n\t" - "pushw %%bx\n\t" - "lcall *pxeparent_entry_point\n\t" - "movw %%ax, %%bx\n\t" - "rdtsc\n\t" - "addw $6, %%sp\n\t" - "popl %%edx\n\t" - "popl %%ebp\n\t" /* gcc bug */ ) - : "=a" ( stopped ), "=d" ( started ), - "=b" ( exit ), "=D" ( discard_D ) - : "b" ( function ), - "D" ( __from_data16 ( &pxeparent_params ) ) - : "ecx", "esi" ); - profile_stop ( &profiler->total ); - before = profile_started ( &profiler->total ); - after = profile_stopped ( &profiler->total ); - profile_start_at ( &profiler->p2r, before ); - profile_stop_at ( &profiler->p2r, started ); - profile_start_at ( &profiler->ext, started ); - profile_stop_at ( &profiler->ext, stopped ); - profile_start_at ( &profiler->r2p, stopped ); - profile_stop_at ( &profiler->r2p, after ); - - /* Determine return status code based on PXENV_EXIT and - * PXENV_STATUS - */ - rc = ( ( exit == PXENV_EXIT_SUCCESS ) ? - 0 : -EPXECALL ( pxeparent_params.Status ) ); - - /* If anything goes wrong, print as much debug information as - * it's possible to give. - */ - if ( rc != 0 ) { - SEGOFF16_t rm_params = { - .segment = rm_ds, - .offset = __from_data16 ( &pxeparent_params ), - }; - - DBG ( "PXEPARENT %s failed: %s\n", - pxeparent_function_name ( function ), strerror ( rc ) ); - DBG ( "PXEPARENT parameters at %04x:%04x length " - "%#02zx, entry point at %04x:%04x\n", - rm_params.segment, rm_params.offset, params_len, - pxeparent_entry_point.segment, - pxeparent_entry_point.offset ); - DBG ( "PXEPARENT parameters provided:\n" ); - DBG_HDA ( rm_params, params, params_len ); - DBG ( "PXEPARENT parameters returned:\n" ); - DBG_HDA ( rm_params, &pxeparent_params, params_len ); - } - - /* Copy parameter block back */ - memcpy ( params, &pxeparent_params, params_len ); - - return rc; -} - |