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/*
(C) Copyright nCipher Corporation Ltd 2002-2008 All rights reserved
Copyright (c) 2008-2013 Thales e-Security All rights reserved
Copyright (c) 2014 Thales UK All rights reserved
*/
/*
* nfp_ifervs.c - common pci interface versioning
*
* uses:
*
* int pdev->ifvers
* device interface version
*
* int nfp_ifvers
* interface version limit
*
* int nfp_alloc_pci_push( nfp_dev *pdev )
* allocates resources needed for PCI Push,
* if not already allocated, and return True if successful
*
* void nfp_free_pci_push( nfp_dev *pdev ) {
* frees any resources allocated to PCI Push
*/
void nfp_set_ifvers( nfp_dev *pdev, int vers ) {
if( nfp_ifvers != 0 && vers > nfp_ifvers ) {
nfp_log( NFP_DBG2,
"nfp_set_ifvers: can't set ifvers %d"
" as nfp_ifvers wants max ifvers %d",
vers, nfp_ifvers);
return;
}
if( vers >= NFDEV_IF_PCI_PUSH ) {
if(!nfp_alloc_pci_push(pdev)) {
nfp_log( NFP_DBG1,
"nfp_set_ifvers: can't set ifvers %d"
" as resources not available",
vers);
return;
}
} else {
nfp_free_pci_push(pdev);
}
pdev->ifvers= vers;
nfp_log( NFP_DBG3, "nfp_set_ifvers: setting ifvers %d", vers);
}
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