2011-01-29 06:11:13 +08:00
|
|
|
/*
|
|
|
|
|
* Copyright IBM Corporation, 2010
|
|
|
|
|
* Author Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
|
|
|
|
|
*
|
|
|
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
|
|
|
* under the terms of version 2.1 of the GNU Lesser General Public License
|
|
|
|
|
* as published by the Free Software Foundation.
|
|
|
|
|
*
|
|
|
|
|
* This program is distributed in the hope that it would be useful, but
|
|
|
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
|
|
|
*
|
|
|
|
|
*/
|
|
|
|
|
|
2011-01-29 07:22:36 +08:00
|
|
|
/* TRUE if it is user context */
|
|
|
|
|
#define P9_IS_USER_CONTEXT (!segment_eq(get_fs(), KERNEL_DS))
|
|
|
|
|
|
2011-01-29 06:11:13 +08:00
|
|
|
/**
|
|
|
|
|
* struct trans_rpage_info - To store mapped page information in PDU.
|
|
|
|
|
* @rp_alloc:Set if this structure is allocd, not a reuse unused space in pdu.
|
|
|
|
|
* @rp_nr_pages: Number of mapped pages
|
|
|
|
|
* @rp_data: Array of page pointers
|
|
|
|
|
*/
|
|
|
|
|
struct trans_rpage_info {
|
|
|
|
|
u8 rp_alloc;
|
|
|
|
|
int rp_nr_pages;
|
|
|
|
|
struct page *rp_data[0];
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
void p9_release_req_pages(struct trans_rpage_info *);
|
|
|
|
|
int p9_payload_gup(struct p9_req_t *, size_t *, int *, int, u8);
|
|
|
|
|
int p9_nr_pages(struct p9_req_t *);
|
