[deliverable/linux.git] / drivers / infiniband / hw / cxgb3 / iwch_mem.c

/*
 * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
#include <linux/slab.h>
#include <asm/byteorder.h>

#include <rdma/iw_cm.h>
#include <rdma/ib_verbs.h>

#include "cxio_hal.h"
#include "cxio_resource.h"
#include "iwch.h"
#include "iwch_provider.h"

static int iwch_finish_mem_reg(struct iwch_mr *mhp, u32 stag)
{
	u32 mmid;

	mhp->attr.state = 1;
	mhp->attr.stag = stag;
	mmid = stag >> 8;
	mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
	PDBG("%s mmid 0x%x mhp %p\n", __func__, mmid, mhp);
	return insert_handle(mhp->rhp, &mhp->rhp->mmidr, mhp, mmid);
}

int iwch_register_mem(struct iwch_dev *rhp, struct iwch_pd *php,
		      struct iwch_mr *mhp, int shift)
{
	u32 stag;
	int ret;

	if (cxio_register_phys_mem(&rhp->rdev,
				   &stag, mhp->attr.pdid,
				   mhp->attr.perms,
				   mhp->attr.zbva,
				   mhp->attr.va_fbo,
				   mhp->attr.len,
				   shift - 12,
				   mhp->attr.pbl_size, mhp->attr.pbl_addr))
		return -ENOMEM;

	ret = iwch_finish_mem_reg(mhp, stag);
	if (ret)
		cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
		       mhp->attr.pbl_addr);
	return ret;
}

int iwch_alloc_pbl(struct iwch_mr *mhp, int npages)
{
	mhp->attr.pbl_addr = cxio_hal_pblpool_alloc(&mhp->rhp->rdev,
						    npages << 3);

	if (!mhp->attr.pbl_addr)
		return -ENOMEM;

	mhp->attr.pbl_size = npages;

	return 0;
}

void iwch_free_pbl(struct iwch_mr *mhp)
{
	cxio_hal_pblpool_free(&mhp->rhp->rdev, mhp->attr.pbl_addr,
			      mhp->attr.pbl_size << 3);
}

int iwch_write_pbl(struct iwch_mr *mhp, __be64 *pages, int npages, int offset)
{
	return cxio_write_pbl(&mhp->rhp->rdev, pages,
			      mhp->attr.pbl_addr + (offset << 3), npages);
}
Commit	Line	Data
b038ced7 SW	1	/*
b038ced7 SW	2	* Copyright (c) 2006 Chelsio, Inc. All rights reserved.
b038ced7 SW	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*/
5a0e3ad6	32	#include <linux/slab.h>
b038ced7 SW	33	#include <asm/byteorder.h>
	34
	35	#include <rdma/iw_cm.h>
	36	#include <rdma/ib_verbs.h>
	37
	38	#include "cxio_hal.h"
273748cc	39	#include "cxio_resource.h"
b038ced7 SW	40	#include "iwch.h"
	41	#include "iwch_provider.h"
	42
13a23933	43	static int iwch_finish_mem_reg(struct iwch_mr *mhp, u32 stag)
b038ced7	44	{
b038ced7 SW	45	u32 mmid;
b038ced7 SW	46
273748cc RD	47	mhp->attr.state = 1;
	48	mhp->attr.stag = stag;
	49	mmid = stag >> 8;
	50	mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
273748cc	51	PDBG("%s mmid 0x%x mhp %p\n", __func__, mmid, mhp);
13a23933	52	return insert_handle(mhp->rhp, &mhp->rhp->mmidr, mhp, mmid);
273748cc RD	53	}
	54
	55	int iwch_register_mem(struct iwch_dev rhp, struct iwch_pd php,
	56	struct iwch_mr *mhp, int shift)
	57	{
	58	u32 stag;
13a23933	59	int ret;
b038ced7 SW	60
	61	if (cxio_register_phys_mem(&rhp->rdev,
	62	&stag, mhp->attr.pdid,
	63	mhp->attr.perms,
	64	mhp->attr.zbva,
	65	mhp->attr.va_fbo,
	66	mhp->attr.len,
273748cc RD	67	shift - 12,
273748cc RD	68	mhp->attr.pbl_size, mhp->attr.pbl_addr))
b038ced7	69	return -ENOMEM;
273748cc	70
13a23933 SW	71	ret = iwch_finish_mem_reg(mhp, stag);
	72	if (ret)
	73	cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
	74	mhp->attr.pbl_addr);
	75	return ret;
b038ced7 SW	76	}
b038ced7 SW	77
273748cc RD	78	int iwch_alloc_pbl(struct iwch_mr *mhp, int npages)
	79	{
	80	mhp->attr.pbl_addr = cxio_hal_pblpool_alloc(&mhp->rhp->rdev,
	81	npages << 3);
	82
	83	if (!mhp->attr.pbl_addr)
	84	return -ENOMEM;
	85
	86	mhp->attr.pbl_size = npages;
	87
b038ced7 SW	88	return 0;
	89	}
	90
273748cc RD	91	void iwch_free_pbl(struct iwch_mr *mhp)
	92	{
	93	cxio_hal_pblpool_free(&mhp->rhp->rdev, mhp->attr.pbl_addr,
	94	mhp->attr.pbl_size << 3);
	95	}
	96
	97	int iwch_write_pbl(struct iwch_mr mhp, __be64 pages, int npages, int offset)
	98	{
	99	return cxio_write_pbl(&mhp->rhp->rdev, pages,
	100	mhp->attr.pbl_addr + (offset << 3), npages);
	101	}