kcompat.c

COPE the first practical network coding scheme which is developped on click

/*******************************************************************************

  
  Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved.
  
  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., 59 
  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  
  The full GNU General Public License is included in this distribution in the
  file called LICENSE.
  
  Contact Information:
  Linux NICS <[e-mail]>
  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

*******************************************************************************/

#include "kcompat.h"

/*****************************************************************************/
/* 2.4.13 => 2.4.3 */
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,4,13) )

/**************************************/
/* PCI DMA MAPPING */

#if defined(CONFIG_HIGHMEM)

#ifndef PCI_DRAM_OFFSET
#define PCI_DRAM_OFFSET 0
#endif

u64 _kc_pci_map_page(struct pci_dev *dev, struct page *page, unsigned long offset, size_t size, int direction)
{
	return (((u64)(page - mem_map) << PAGE_SHIFT) + offset + PCI_DRAM_OFFSET);
}

#else /* CONFIG_HIGHMEM */

u64 _kc_pci_map_page(struct pci_dev *dev, struct page *page, unsigned long offset, size_t size, int direction)
{
	return pci_map_single(dev, (void *)page_address(page) + offset, size, direction);
}

#endif /* CONFIG_HIGHMEM */

void _kc_pci_unmap_page(struct pci_dev *dev, u64 dma_addr, size_t size, int direction)
{
	return pci_unmap_single(dev, dma_addr, size, direction);
}

#endif /* 2.4.13 => 2.4.3 */


/*****************************************************************************/
/* 2.4.3 => 2.4.0 */
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,4,3) )

/**************************************/
/* PCI DRIVER API */

int _kc_pci_set_dma_mask(struct pci_dev *dev, dma_addr_t mask)
{
	if(!pci_dma_supported(dev, mask))
		return -EIO;
	dev->dma_mask = mask;
	return 0;
}

int _kc_pci_request_regions(struct pci_dev *dev, char *res_name)
{
	int i;

	for (i = 0; i < 6; i++) {
		if (pci_resource_len(dev, i) == 0)
			continue;

		if (pci_resource_flags(dev, i) & IORESOURCE_IO) {
			if (!request_region(pci_resource_start(dev, i), pci_resource_len(dev, i), res_name)) {
				pci_release_regions(dev);
				return -EBUSY;
			}
		} else if (pci_resource_flags(dev, i) & IORESOURCE_MEM) {
			if (!request_mem_region(pci_resource_start(dev, i), pci_resource_len(dev, i), res_name)) {
				pci_release_regions(dev);
				return -EBUSY;
			}
		}
	}
	return 0;
}

void _kc_pci_release_regions(struct pci_dev *dev)
{
	int i;

	for (i = 0; i < 6; i++) {
		if (pci_resource_len(dev, i) == 0)
			continue;

		if (pci_resource_flags(dev, i) & IORESOURCE_IO)
			release_region(pci_resource_start(dev, i), pci_resource_len(dev, i));

		else if (pci_resource_flags(dev, i) & IORESOURCE_MEM)
			release_mem_region(pci_resource_start(dev, i), pci_resource_len(dev, i));
	}
}

/**************************************/
/* NETWORK DRIVER API */

struct net_device * _kc_alloc_etherdev(int sizeof_priv)
{
	struct net_device *dev;
	int alloc_size;

	alloc_size = sizeof (*dev) + sizeof_priv + IFNAMSIZ + 31;

	dev = kmalloc(alloc_size, GFP_KERNEL);

	if (!dev) return NULL;

	memset(dev, 0, alloc_size);

	if (sizeof_priv)
		dev->priv = (void *) (((unsigned long)(dev + 1) + 31) & ~31);

	dev->name[0] = '\0';

	ether_setup(dev);

	return dev;
}

int _kc_is_valid_ether_addr(u8 *addr)
{
	const char zaddr[6] = {0,};

	return !(addr[0]&1) && memcmp( addr, zaddr, 6);
}

#endif /* 2.4.3 => 2.4.0 */


/*****************************************************************************/
/* 2.4.6 => 2.4.3 */
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,4,6) )

int _kc_pci_set_power_state(struct pci_dev *dev, int state)
{ return 0; }
int _kc_pci_save_state(struct pci_dev *dev, u32 *buffer)
{ return 0; }
int _kc_pci_restore_state(struct pci_dev *pdev, u32 *buffer)
{ return 0; }
int _kc_pci_enable_wake(struct pci_dev *pdev, u32 state, int enable)
{ return 0; }

#endif /* 2.4.6 => 2.4.3 */