mirror of
https://github.com/xcat2/xNBA.git
synced 2024-12-14 15:21:32 +00:00
Separated out UNDI ROM location code into undirom.c, and use struct
undi_rom rather than struct pxe_driver. (This is part of the naming consistency fixes).
This commit is contained in:
Michael Brown
parent
675fe200e5
commit
6fc75f659b
236
src/arch/i386/drivers/net/undirom.c
Normal file
236
src/arch/i386/drivers/net/undirom.c
Normal file
@ -0,0 +1,236 @@
|
||||
/*
|
||||
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*/
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <pxe.h>
|
||||
#include <realmode.h>
|
||||
#include <bios.h>
|
||||
#include <pnpbios.h>
|
||||
#include <gpxe/pci.h>
|
||||
#include <undirom.h>
|
||||
|
||||
/** @file
|
||||
*
|
||||
* UNDI expansion ROMs
|
||||
*
|
||||
*/
|
||||
|
||||
/** List of all UNDI ROMs */
|
||||
static LIST_HEAD ( undiroms );
|
||||
|
||||
/**
|
||||
* Parse PXE ROM ID structure
|
||||
*
|
||||
* @v undirom UNDI ROM
|
||||
* @v pxeromid Offset within ROM to PXE ROM ID structure
|
||||
* @ret rc Return status code
|
||||
*/
|
||||
static int undirom_parse_pxeromid ( struct undi_rom *undirom,
|
||||
unsigned int pxeromid ) {
|
||||
struct undi_rom_id undi_rom_id;
|
||||
unsigned int undiloader;
|
||||
|
||||
DBGC ( undirom, "UNDIROM %p has PXE ROM ID at %04x:%04x\n", undirom,
|
||||
undirom->rom_segment, pxeromid );
|
||||
|
||||
/* Read PXE ROM ID structure and verify */
|
||||
copy_from_real ( &undi_rom_id, undirom->rom_segment, pxeromid,
|
||||
sizeof ( undi_rom_id ) );
|
||||
if ( undi_rom_id.Signature != UNDI_ROM_ID_SIGNATURE ) {
|
||||
DBGC ( undirom, "UNDIROM %p has bad PXE ROM ID signature "
|
||||
"%08lx\n", undirom, undi_rom_id.Signature );
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Check for UNDI loader */
|
||||
undiloader = undi_rom_id.UNDILoader;
|
||||
if ( ! undiloader ) {
|
||||
DBGC ( undirom, "UNDIROM %p has no UNDI loader\n", undirom );
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Fill in UNDI ROM loader fields */
|
||||
undirom->loader_entry.segment = undirom->rom_segment;
|
||||
undirom->loader_entry.offset = undiloader;
|
||||
undirom->code_size = undi_rom_id.CodeSize;
|
||||
undirom->data_size = undi_rom_id.DataSize;
|
||||
|
||||
DBGC ( undirom, "UNDIROM %p has UNDI loader at %04x:%04x "
|
||||
"(code %04x data %04x)\n", undirom,
|
||||
undirom->loader_entry.segment, undirom->loader_entry.offset,
|
||||
undirom->code_size, undirom->data_size );
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Parse PCI expansion header
|
||||
*
|
||||
* @v undirom UNDI ROM
|
||||
* @v pcirheader Offset within ROM to PCI expansion header
|
||||
*/
|
||||
static int undirom_parse_pcirheader ( struct undi_rom *undirom,
|
||||
unsigned int pcirheader ) {
|
||||
struct pcir_header pcir_header;
|
||||
|
||||
DBGC ( undirom, "UNDIROM %p has PCI expansion header at %04x:%04x\n",
|
||||
undirom, undirom->rom_segment, pcirheader );
|
||||
|
||||
/* Read PCI expansion header and verify */
|
||||
copy_from_real ( &pcir_header, undirom->rom_segment, pcirheader,
|
||||
sizeof ( pcir_header ) );
|
||||
if ( pcir_header.signature != PCIR_SIGNATURE ) {
|
||||
DBGC ( undirom, "UNDIROM %p has bad PCI expansion header "
|
||||
"signature %08lx\n", undirom, pcir_header.signature );
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Fill in UNDI ROM PCI device fields */
|
||||
undirom->bus_type = PCI_NIC;
|
||||
undirom->bus_id.pci.vendor_id = pcir_header.vendor_id;
|
||||
undirom->bus_id.pci.device_id = pcir_header.device_id;
|
||||
|
||||
DBGC ( undirom, "UNDIROM %p is for PCI devices %04x:%04x\n", undirom,
|
||||
undirom->bus_id.pci.vendor_id, undirom->bus_id.pci.device_id );
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
/**
|
||||
* Probe UNDI ROM
|
||||
*
|
||||
* @v rom_segment ROM segment address
|
||||
* @ret rc Return status code
|
||||
*/
|
||||
static int undirom_probe ( unsigned int rom_segment ) {
|
||||
struct undi_rom *undirom = NULL;
|
||||
struct undi_rom_header romheader;
|
||||
size_t rom_len;
|
||||
unsigned int pxeromid;
|
||||
unsigned int pcirheader;
|
||||
int rc;
|
||||
|
||||
/* Read expansion ROM header and verify */
|
||||
copy_from_real ( &romheader, rom_segment, 0, sizeof ( romheader ) );
|
||||
if ( romheader.Signature != ROM_SIGNATURE ) {
|
||||
rc = -EINVAL;
|
||||
goto err;
|
||||
}
|
||||
rom_len = ( romheader.ROMLength * 512 );
|
||||
|
||||
/* Allocate memory for UNDI ROM */
|
||||
undirom = malloc ( sizeof ( *undirom ) );
|
||||
if ( ! undirom ) {
|
||||
DBG ( "Could not allocate UNDI ROM structure\n" );
|
||||
rc = -ENOMEM;
|
||||
goto err;
|
||||
}
|
||||
memset ( undirom, 0, sizeof ( *undirom ) );
|
||||
DBGC ( undirom, "UNDIROM %p trying expansion ROM at %04x:0000 "
|
||||
"(%zdkB)\n", undirom, rom_segment, ( rom_len / 1024 ) );
|
||||
undirom->rom_segment = rom_segment;
|
||||
|
||||
/* Check for and parse PXE ROM ID */
|
||||
pxeromid = romheader.PXEROMID;
|
||||
if ( ! pxeromid ) {
|
||||
DBGC ( undirom, "UNDIROM %p has no PXE ROM ID\n", undirom );
|
||||
rc = -EINVAL;
|
||||
goto err;
|
||||
}
|
||||
if ( pxeromid > rom_len ) {
|
||||
DBGC ( undirom, "UNDIROM %p PXE ROM ID outside ROM\n",
|
||||
undirom );
|
||||
rc = -EINVAL;
|
||||
goto err;
|
||||
}
|
||||
if ( ( rc = undirom_parse_pxeromid ( undirom, pxeromid ) ) != 0 )
|
||||
goto err;
|
||||
|
||||
/* Parse PCIR header, if present */
|
||||
pcirheader = romheader.PCIRHeader;
|
||||
if ( pcirheader )
|
||||
undirom_parse_pcirheader ( undirom, pcirheader );
|
||||
|
||||
/* Add to UNDI ROM list and return */
|
||||
DBGC ( undirom, "UNDIROM %p registered\n", undirom );
|
||||
list_add ( &undirom->list, &undiroms );
|
||||
return 0;
|
||||
|
||||
err:
|
||||
free ( undirom );
|
||||
return rc;
|
||||
}
|
||||
|
||||
/**
|
||||
* Create UNDI ROMs for all possible expansion ROMs
|
||||
*
|
||||
* @ret
|
||||
*/
|
||||
static void undirom_probe_all_roms ( void ) {
|
||||
static int probed = 0;
|
||||
unsigned int rom_segment;
|
||||
|
||||
/* Perform probe only once */
|
||||
if ( probed )
|
||||
return;
|
||||
|
||||
DBG ( "Scanning for PXE expansion ROMs\n" );
|
||||
|
||||
/* Scan through expansion ROM region at 2kB intervals */
|
||||
for ( rom_segment = 0xc000 ; rom_segment < 0x10000 ;
|
||||
rom_segment += 0x80 ) {
|
||||
undirom_probe ( rom_segment );
|
||||
}
|
||||
|
||||
probed = 1;
|
||||
}
|
||||
|
||||
/**
|
||||
* Find UNDI ROM for PCI device
|
||||
*
|
||||
* @v vendor_id PCI vendor ID
|
||||
* @v device_id PCI device ID
|
||||
* @v rombase ROM base address, or 0 for any
|
||||
* @ret undirom UNDI ROM, or NULL
|
||||
*/
|
||||
struct undi_rom * undirom_find_pci ( unsigned int vendor_id,
|
||||
unsigned int device_id,
|
||||
unsigned int rombase ) {
|
||||
struct undi_rom *undirom;
|
||||
|
||||
undirom_probe_all_roms();
|
||||
|
||||
list_for_each_entry ( undirom, &undiroms, list ) {
|
||||
if ( undirom->bus_type != PCI_NIC )
|
||||
continue;
|
||||
if ( undirom->bus_id.pci.vendor_id != vendor_id )
|
||||
continue;
|
||||
if ( undirom->bus_id.pci.device_id != device_id )
|
||||
continue;
|
||||
if ( rombase && ( ( undirom->rom_segment << 4 ) != rombase ) )
|
||||
continue;
|
||||
DBGC ( undirom, "UNDIROM %p matched PCI %04x:%04x (%08x)\n",
|
||||
undirom, vendor_id, device_id, rombase );
|
||||
return undirom;
|
||||
}
|
||||
|
||||
DBG ( "No UNDI ROM matched PCI %04x:%04x (%08x)\n",
|
||||
vendor_id, device_id, rombase );
|
||||
return NULL;
|
||||
}
|
||||
49
src/arch/i386/include/undirom.h
Normal file
49
src/arch/i386/include/undirom.h
Normal file
@ -0,0 +1,49 @@
|
||||
#ifndef _UNDIROM_H
|
||||
#define _UNDIROM_H
|
||||
|
||||
/** @file
|
||||
*
|
||||
* UNDI expansion ROMs
|
||||
*
|
||||
*/
|
||||
|
||||
/** An UNDI PCI device ID */
|
||||
struct undi_pci_device_id {
|
||||
/** PCI vendor ID */
|
||||
unsigned int vendor_id;
|
||||
/** PCI device ID */
|
||||
unsigned int device_id;
|
||||
};
|
||||
|
||||
/** An UNDI device ID */
|
||||
union undi_device_id {
|
||||
/** PCI device ID */
|
||||
struct undi_pci_device_id pci;
|
||||
};
|
||||
|
||||
/** An UNDI ROM */
|
||||
struct undi_rom {
|
||||
/** List of UNDI ROMs */
|
||||
struct list_head list;
|
||||
/** ROM segment address */
|
||||
unsigned int rom_segment;
|
||||
/** UNDI loader entry point */
|
||||
SEGOFF16_t loader_entry;
|
||||
/** Code segment size */
|
||||
size_t code_size;
|
||||
/** Data segment size */
|
||||
size_t data_size;
|
||||
/** Bus type
|
||||
*
|
||||
* Values are as used by @c PXENV_UNDI_GET_NIC_TYPE
|
||||
*/
|
||||
unsigned int bus_type;
|
||||
/** Device ID */
|
||||
union undi_device_id bus_id;
|
||||
};
|
||||
|
||||
extern struct undi_rom * undirom_find_pci ( unsigned int vendor_id,
|
||||
unsigned int device_id,
|
||||
unsigned int rombase );
|
||||
|
||||
#endif /* _UNDIROM_H */
|
||||
Loading…
Reference in New Issue
Block a user