[linux-2.6-block.git] / drivers / infiniband / hw / ehca / ehca_uverbs.c

/*
 *  IBM eServer eHCA Infiniband device driver for Linux on POWER
 *
 *  userspace support verbs
 *
 *  Authors: Christoph Raisch <raisch@de.ibm.com>
 *           Hoang-Nam Nguyen <hnguyen@de.ibm.com>
 *           Heiko J Schick <schickhj@de.ibm.com>
 *
 *  Copyright (c) 2005 IBM Corporation
 *
 *  All rights reserved.
 *
 *  This source code is distributed under a dual license of GPL v2.0 and OpenIB
 *  BSD.
 *
 * OpenIB BSD License
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <asm/current.h>

#include "ehca_classes.h"
#include "ehca_iverbs.h"
#include "ehca_mrmw.h"
#include "ehca_tools.h"
#include "hcp_if.h"

struct ib_ucontext *ehca_alloc_ucontext(struct ib_device *device,
					struct ib_udata *udata)
{
	struct ehca_ucontext *my_context;

	my_context = kzalloc(sizeof *my_context, GFP_KERNEL);
	if (!my_context) {
		ehca_err(device, "Out of memory device=%p", device);
		return ERR_PTR(-ENOMEM);
	}

	return &my_context->ib_ucontext;
}

int ehca_dealloc_ucontext(struct ib_ucontext *context)
{
	kfree(container_of(context, struct ehca_ucontext, ib_ucontext));
	return 0;
}

static void ehca_mm_open(struct vm_area_struct *vma)
{
	u32 *count = (u32*)vma->vm_private_data;
	if (!count) {
		ehca_gen_err("Invalid vma struct vm_start=%lx vm_end=%lx",
			     vma->vm_start, vma->vm_end);
		return;
	}
	(*count)++;
	if (!(*count))
		ehca_gen_err("Use count overflow vm_start=%lx vm_end=%lx",
			     vma->vm_start, vma->vm_end);
	ehca_gen_dbg("vm_start=%lx vm_end=%lx count=%x",
		     vma->vm_start, vma->vm_end, *count);
}

static void ehca_mm_close(struct vm_area_struct *vma)
{
	u32 *count = (u32*)vma->vm_private_data;
	if (!count) {
		ehca_gen_err("Invalid vma struct vm_start=%lx vm_end=%lx",
			     vma->vm_start, vma->vm_end);
		return;
	}
	(*count)--;
	ehca_gen_dbg("vm_start=%lx vm_end=%lx count=%x",
		     vma->vm_start, vma->vm_end, *count);
}

static struct vm_operations_struct vm_ops = {
	.open =	ehca_mm_open,
	.close = ehca_mm_close,
};

static int ehca_mmap_fw(struct vm_area_struct *vma, struct h_galpas *galpas,
			u32 *mm_count)
{
	int ret;
	u64 vsize, physical;

	vsize = vma->vm_end - vma->vm_start;
	if (vsize != EHCA_PAGESIZE) {
		ehca_gen_err("invalid vsize=%lx", vma->vm_end - vma->vm_start);
		return -EINVAL;
	}

	physical = galpas->user.fw_handle;
	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
	ehca_gen_dbg("vsize=%lx physical=%lx", vsize, physical);
	/* VM_IO | VM_RESERVED are set by remap_pfn_range() */
	ret = remap_pfn_range(vma, vma->vm_start, physical >> PAGE_SHIFT,
			      vsize, vma->vm_page_prot);
	if (unlikely(ret)) {
		ehca_gen_err("remap_pfn_range() failed ret=%x", ret);
		return -ENOMEM;
	}

	vma->vm_private_data = mm_count;
	(*mm_count)++;
	vma->vm_ops = &vm_ops;

	return 0;
}

static int ehca_mmap_queue(struct vm_area_struct *vma, struct ipz_queue *queue,
			   u32 *mm_count)
{
	int ret;
	u64 start, ofs;
	struct page *page;

	vma->vm_flags |= VM_RESERVED;
	start = vma->vm_start;
	for (ofs = 0; ofs < queue->queue_length; ofs += PAGE_SIZE) {
		u64 virt_addr = (u64)ipz_qeit_calc(queue, ofs);
		page = virt_to_page(virt_addr);
		ret = vm_insert_page(vma, start, page);
		if (unlikely(ret)) {
			ehca_gen_err("vm_insert_page() failed rc=%x", ret);
			return ret;
		}
		start +=  PAGE_SIZE;
	}
	vma->vm_private_data = mm_count;
	(*mm_count)++;
	vma->vm_ops = &vm_ops;

	return 0;
}

static int ehca_mmap_cq(struct vm_area_struct *vma, struct ehca_cq *cq,
			u32 rsrc_type)
{
	int ret;

	switch (rsrc_type) {
	case 1: /* galpa fw handle */
		ehca_dbg(cq->ib_cq.device, "cq_num=%x fw", cq->cq_number);
		ret = ehca_mmap_fw(vma, &cq->galpas, &cq->mm_count_galpa);
		if (unlikely(ret)) {
			ehca_err(cq->ib_cq.device,
				 "ehca_mmap_fw() failed rc=%x cq_num=%x",
				 ret, cq->cq_number);
			return ret;
		}
		break;

	case 2: /* cq queue_addr */
		ehca_dbg(cq->ib_cq.device, "cq_num=%x queue", cq->cq_number);
		ret = ehca_mmap_queue(vma, &cq->ipz_queue, &cq->mm_count_queue);
		if (unlikely(ret)) {
			ehca_err(cq->ib_cq.device,
				 "ehca_mmap_queue() failed rc=%x cq_num=%x",
				 ret, cq->cq_number);
			return ret;
		}
		break;

	default:
		ehca_err(cq->ib_cq.device, "bad resource type=%x cq_num=%x",
			 rsrc_type, cq->cq_number);
		return -EINVAL;
	}

	return 0;
}

static int ehca_mmap_qp(struct vm_area_struct *vma, struct ehca_qp *qp,
			u32 rsrc_type)
{
	int ret;

	switch (rsrc_type) {
	case 1: /* galpa fw handle */
		ehca_dbg(qp->ib_qp.device, "qp_num=%x fw", qp->ib_qp.qp_num);
		ret = ehca_mmap_fw(vma, &qp->galpas, &qp->mm_count_galpa);
		if (unlikely(ret)) {
			ehca_err(qp->ib_qp.device,
				 "remap_pfn_range() failed ret=%x qp_num=%x",
				 ret, qp->ib_qp.qp_num);
			return -ENOMEM;
		}
		break;

	case 2: /* qp rqueue_addr */
		ehca_dbg(qp->ib_qp.device, "qp_num=%x rqueue",
			 qp->ib_qp.qp_num);
		ret = ehca_mmap_queue(vma, &qp->ipz_rqueue, &qp->mm_count_rqueue);
		if (unlikely(ret)) {
			ehca_err(qp->ib_qp.device,
				 "ehca_mmap_queue(rq) failed rc=%x qp_num=%x",
				 ret, qp->ib_qp.qp_num);
			return ret;
		}
		break;

	case 3: /* qp squeue_addr */
		ehca_dbg(qp->ib_qp.device, "qp_num=%x squeue",
			 qp->ib_qp.qp_num);
		ret = ehca_mmap_queue(vma, &qp->ipz_squeue, &qp->mm_count_squeue);
		if (unlikely(ret)) {
			ehca_err(qp->ib_qp.device,
				 "ehca_mmap_queue(sq) failed rc=%x qp_num=%x",
				 ret, qp->ib_qp.qp_num);
			return ret;
		}
		break;

	default:
		ehca_err(qp->ib_qp.device, "bad resource type=%x qp=num=%x",
			 rsrc_type, qp->ib_qp.qp_num);
		return -EINVAL;
	}

	return 0;
}

int ehca_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
{
	u64 fileoffset = vma->vm_pgoff << PAGE_SHIFT;
	u32 idr_handle = fileoffset >> 32;
	u32 q_type = (fileoffset >> 28) & 0xF;	  /* CQ, QP,...        */
	u32 rsrc_type = (fileoffset >> 24) & 0xF; /* sq,rq,cmnd_window */
	u32 cur_pid = current->tgid;
	u32 ret;
	unsigned long flags;
	struct ehca_cq *cq;
	struct ehca_qp *qp;
	struct ehca_pd *pd;

	switch (q_type) {
	case  1: /* CQ */
		spin_lock_irqsave(&ehca_cq_idr_lock, flags);
		cq = idr_find(&ehca_cq_idr, idr_handle);
		spin_unlock_irqrestore(&ehca_cq_idr_lock, flags);

		/* make sure this mmap really belongs to the authorized user */
		if (!cq)
			return -EINVAL;

		if (cq->ownpid != cur_pid) {
			ehca_err(cq->ib_cq.device,
				 "Invalid caller pid=%x ownpid=%x",
				 cur_pid, cq->ownpid);
			return -ENOMEM;
		}

		if (!cq->ib_cq.uobject || cq->ib_cq.uobject->context != context)
			return -EINVAL;

		ret = ehca_mmap_cq(vma, cq, rsrc_type);
		if (unlikely(ret)) {
			ehca_err(cq->ib_cq.device,
				 "ehca_mmap_cq() failed rc=%x cq_num=%x",
				 ret, cq->cq_number);
			return ret;
		}
		break;

	case 2: /* QP */
		spin_lock_irqsave(&ehca_qp_idr_lock, flags);
		qp = idr_find(&ehca_qp_idr, idr_handle);
		spin_unlock_irqrestore(&ehca_qp_idr_lock, flags);

		/* make sure this mmap really belongs to the authorized user */
		if (!qp)
			return -EINVAL;

		pd = container_of(qp->ib_qp.pd, struct ehca_pd, ib_pd);
		if (pd->ownpid != cur_pid) {
			ehca_err(qp->ib_qp.device,
				 "Invalid caller pid=%x ownpid=%x",
				 cur_pid, pd->ownpid);
			return -ENOMEM;
		}

		if (!qp->ib_qp.uobject || qp->ib_qp.uobject->context != context)
			return -EINVAL;

		ret = ehca_mmap_qp(vma, qp, rsrc_type);
		if (unlikely(ret)) {
			ehca_err(qp->ib_qp.device,
				 "ehca_mmap_qp() failed rc=%x qp_num=%x",
				 ret, qp->ib_qp.qp_num);
			return ret;
		}
		break;

	default:
		ehca_gen_err("bad queue type %x", q_type);
		return -EINVAL;
	}

	return 0;
}
Commit	Line	Data
fab97220 HS	1	/*
	2	* IBM eServer eHCA Infiniband device driver for Linux on POWER
	3	*
	4	* userspace support verbs
	5	*
	6	* Authors: Christoph Raisch <raisch@de.ibm.com>
	7	* Hoang-Nam Nguyen <hnguyen@de.ibm.com>
	8	* Heiko J Schick <schickhj@de.ibm.com>
	9	*
	10	* Copyright (c) 2005 IBM Corporation
	11	*
	12	* All rights reserved.
	13	*
	14	* This source code is distributed under a dual license of GPL v2.0 and OpenIB
	15	* BSD.
	16	*
	17	* OpenIB BSD License
	18	*
	19	* Redistribution and use in source and binary forms, with or without
	20	* modification, are permitted provided that the following conditions are met:
	21	*
	22	* Redistributions of source code must retain the above copyright notice, this
	23	* list of conditions and the following disclaimer.
	24	*
	25	* Redistributions in binary form must reproduce the above copyright notice,
	26	* this list of conditions and the following disclaimer in the documentation
	27	* and/or other materials
	28	* provided with the distribution.
	29	*
	30	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	31	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	32	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	33	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
	34	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	35	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	36	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
	37	* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
	38	* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	39	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	40	* POSSIBILITY OF SUCH DAMAGE.
	41	*/
	42
	43	#include <asm/current.h>
	44
	45	#include "ehca_classes.h"
	46	#include "ehca_iverbs.h"
	47	#include "ehca_mrmw.h"
	48	#include "ehca_tools.h"
	49	#include "hcp_if.h"
	50
	51	struct ib_ucontext ehca_alloc_ucontext(struct ib_device device,
	52	struct ib_udata *udata)
	53	{
	54	struct ehca_ucontext *my_context;
	55
	56	my_context = kzalloc(sizeof *my_context, GFP_KERNEL);
	57	if (!my_context) {
	58	ehca_err(device, "Out of memory device=%p", device);
	59	return ERR_PTR(-ENOMEM);
	60	}
	61
	62	return &my_context->ib_ucontext;
	63	}
	64
65	int ehca_dealloc_ucontext(struct ib_ucontext *context)
66	{
67	kfree(container_of(context, struct ehca_ucontext, ib_ucontext));
68	return 0;
69	}
70
4c34bdf5	71	static void ehca_mm_open(struct vm_area_struct *vma)
fab97220	72	{
4c34bdf5 HNN	73	u32 count = (u32)vma->vm_private_data;
	74	if (!count) {
	75	ehca_gen_err("Invalid vma struct vm_start=%lx vm_end=%lx",
	76	vma->vm_start, vma->vm_end);
	77	return;
	78	}
	79	(*count)++;
	80	if (!(*count))
	81	ehca_gen_err("Use count overflow vm_start=%lx vm_end=%lx",
	82	vma->vm_start, vma->vm_end);
	83	ehca_gen_dbg("vm_start=%lx vm_end=%lx count=%x",
	84	vma->vm_start, vma->vm_end, *count);
	85	}
fab97220	86
4c34bdf5 HNN	87	static void ehca_mm_close(struct vm_area_struct *vma)
	88	{
	89	u32 count = (u32)vma->vm_private_data;
	90	if (!count) {
	91	ehca_gen_err("Invalid vma struct vm_start=%lx vm_end=%lx",
	92	vma->vm_start, vma->vm_end);
	93	return;
	94	}
	95	(*count)--;
	96	ehca_gen_dbg("vm_start=%lx vm_end=%lx count=%x",
	97	vma->vm_start, vma->vm_end, *count);
	98	}
fab97220	99
4c34bdf5 HNN	100	static struct vm_operations_struct vm_ops = {
	101	.open = ehca_mm_open,
	102	.close = ehca_mm_close,
	103	};
	104
	105	static int ehca_mmap_fw(struct vm_area_struct vma, struct h_galpas galpas,
	106	u32 *mm_count)
	107	{
	108	int ret;
	109	u64 vsize, physical;
	110
	111	vsize = vma->vm_end - vma->vm_start;
	112	if (vsize != EHCA_PAGESIZE) {
	113	ehca_gen_err("invalid vsize=%lx", vma->vm_end - vma->vm_start);
	114	return -EINVAL;
	115	}
	116
	117	physical = galpas->user.fw_handle;
	118	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
	119	ehca_gen_dbg("vsize=%lx physical=%lx", vsize, physical);
	120	/* VM_IO \| VM_RESERVED are set by remap_pfn_range() */
	121	ret = remap_pfn_range(vma, vma->vm_start, physical >> PAGE_SHIFT,
	122	vsize, vma->vm_page_prot);
	123	if (unlikely(ret)) {
	124	ehca_gen_err("remap_pfn_range() failed ret=%x", ret);
	125	return -ENOMEM;
	126	}
	127
	128	vma->vm_private_data = mm_count;
	129	(*mm_count)++;
	130	vma->vm_ops = &vm_ops;
	131
	132	return 0;
	133	}
	134
	135	static int ehca_mmap_queue(struct vm_area_struct vma, struct ipz_queue queue,
	136	u32 *mm_count)
	137	{
	138	int ret;
	139	u64 start, ofs;
	140	struct page *page;
	141
	142	vma->vm_flags \|= VM_RESERVED;
	143	start = vma->vm_start;
	144	for (ofs = 0; ofs < queue->queue_length; ofs += PAGE_SIZE) {
	145	u64 virt_addr = (u64)ipz_qeit_calc(queue, ofs);
	146	page = virt_to_page(virt_addr);
	147	ret = vm_insert_page(vma, start, page);
	148	if (unlikely(ret)) {
	149	ehca_gen_err("vm_insert_page() failed rc=%x", ret);
	150	return ret;
fab97220	151	}
4c34bdf5 HNN	152	start += PAGE_SIZE;
	153	}
	154	vma->vm_private_data = mm_count;
	155	(*mm_count)++;
	156	vma->vm_ops = &vm_ops;
fab97220	157
4c34bdf5 HNN	158	return 0;
	159	}
	160
	161	static int ehca_mmap_cq(struct vm_area_struct vma, struct ehca_cq cq,
	162	u32 rsrc_type)
	163	{
	164	int ret;
	165
	166	switch (rsrc_type) {
	167	case 1: /* galpa fw handle */
	168	ehca_dbg(cq->ib_cq.device, "cq_num=%x fw", cq->cq_number);
	169	ret = ehca_mmap_fw(vma, &cq->galpas, &cq->mm_count_galpa);
	170	if (unlikely(ret)) {
fab97220	171	ehca_err(cq->ib_cq.device,
4c34bdf5 HNN	172	"ehca_mmap_fw() failed rc=%x cq_num=%x",
	173	ret, cq->cq_number);
	174	return ret;
fab97220	175	}
4c34bdf5	176	break;
fab97220	177
4c34bdf5 HNN	178	case 2: /* cq queue_addr */
	179	ehca_dbg(cq->ib_cq.device, "cq_num=%x queue", cq->cq_number);
	180	ret = ehca_mmap_queue(vma, &cq->ipz_queue, &cq->mm_count_queue);
	181	if (unlikely(ret)) {
	182	ehca_err(cq->ib_cq.device,
	183	"ehca_mmap_queue() failed rc=%x cq_num=%x",
	184	ret, cq->cq_number);
	185	return ret;
fab97220 HS	186	}
	187	break;
	188
4c34bdf5 HNN	189	default:
	190	ehca_err(cq->ib_cq.device, "bad resource type=%x cq_num=%x",
	191	rsrc_type, cq->cq_number);
	192	return -EINVAL;
	193	}
fab97220	194
4c34bdf5 HNN	195	return 0;
	196	}
	197
	198	static int ehca_mmap_qp(struct vm_area_struct vma, struct ehca_qp qp,
	199	u32 rsrc_type)
	200	{
	201	int ret;
	202
	203	switch (rsrc_type) {
	204	case 1: /* galpa fw handle */
	205	ehca_dbg(qp->ib_qp.device, "qp_num=%x fw", qp->ib_qp.qp_num);
	206	ret = ehca_mmap_fw(vma, &qp->galpas, &qp->mm_count_galpa);
	207	if (unlikely(ret)) {
	208	ehca_err(qp->ib_qp.device,
	209	"remap_pfn_range() failed ret=%x qp_num=%x",
	210	ret, qp->ib_qp.qp_num);
	211	return -ENOMEM;
fab97220	212	}
4c34bdf5	213	break;
fab97220	214
4c34bdf5 HNN	215	case 2: /* qp rqueue_addr */
	216	ehca_dbg(qp->ib_qp.device, "qp_num=%x rqueue",
	217	qp->ib_qp.qp_num);
	218	ret = ehca_mmap_queue(vma, &qp->ipz_rqueue, &qp->mm_count_rqueue);
	219	if (unlikely(ret)) {
fab97220	220	ehca_err(qp->ib_qp.device,
4c34bdf5 HNN	221	"ehca_mmap_queue(rq) failed rc=%x qp_num=%x",
	222	ret, qp->ib_qp.qp_num);
	223	return ret;
fab97220	224	}
4c34bdf5	225	break;
fab97220	226
4c34bdf5 HNN	227	case 3: /* qp squeue_addr */
	228	ehca_dbg(qp->ib_qp.device, "qp_num=%x squeue",
	229	qp->ib_qp.qp_num);
	230	ret = ehca_mmap_queue(vma, &qp->ipz_squeue, &qp->mm_count_squeue);
	231	if (unlikely(ret)) {
	232	ehca_err(qp->ib_qp.device,
	233	"ehca_mmap_queue(sq) failed rc=%x qp_num=%x",
	234	ret, qp->ib_qp.qp_num);
	235	return ret;
fab97220 HS	236	}
	237	break;
	238
	239	default:
4c34bdf5 HNN	240	ehca_err(qp->ib_qp.device, "bad resource type=%x qp=num=%x",
	241	rsrc_type, qp->ib_qp.qp_num);
	242	return -EINVAL;
fab97220	243	}
fab97220	244
4c34bdf5	245	return 0;
fab97220 HS	246	}
fab97220 HS	247
fab97220 HS	248	int ehca_mmap(struct ib_ucontext context, struct vm_area_struct vma)
	249	{
	250	u64 fileoffset = vma->vm_pgoff << PAGE_SHIFT;
	251	u32 idr_handle = fileoffset >> 32;
	252	u32 q_type = (fileoffset >> 28) & 0xF; /* CQ, QP,... */
	253	u32 rsrc_type = (fileoffset >> 24) & 0xF; /* sq,rq,cmnd_window */
	254	u32 cur_pid = current->tgid;
	255	u32 ret;
fab97220 HS	256	unsigned long flags;
	257	struct ehca_cq *cq;
	258	struct ehca_qp *qp;
	259	struct ehca_pd *pd;
	260
	261	switch (q_type) {
	262	case 1: /* CQ */
	263	spin_lock_irqsave(&ehca_cq_idr_lock, flags);
	264	cq = idr_find(&ehca_cq_idr, idr_handle);
	265	spin_unlock_irqrestore(&ehca_cq_idr_lock, flags);
	266
	267	/* make sure this mmap really belongs to the authorized user */
	268	if (!cq)
	269	return -EINVAL;
	270
	271	if (cq->ownpid != cur_pid) {
	272	ehca_err(cq->ib_cq.device,
	273	"Invalid caller pid=%x ownpid=%x",
	274	cur_pid, cq->ownpid);
	275	return -ENOMEM;
	276	}
	277
	278	if (!cq->ib_cq.uobject \|\| cq->ib_cq.uobject->context != context)
	279	return -EINVAL;
	280
4c34bdf5 HNN	281	ret = ehca_mmap_cq(vma, cq, rsrc_type);
	282	if (unlikely(ret)) {
	283	ehca_err(cq->ib_cq.device,
	284	"ehca_mmap_cq() failed rc=%x cq_num=%x",
	285	ret, cq->cq_number);
	286	return ret;
fab97220 HS	287	}
	288	break;
	289
	290	case 2: /* QP */
	291	spin_lock_irqsave(&ehca_qp_idr_lock, flags);
	292	qp = idr_find(&ehca_qp_idr, idr_handle);
	293	spin_unlock_irqrestore(&ehca_qp_idr_lock, flags);
	294
	295	/* make sure this mmap really belongs to the authorized user */
	296	if (!qp)
	297	return -EINVAL;
	298
	299	pd = container_of(qp->ib_qp.pd, struct ehca_pd, ib_pd);
	300	if (pd->ownpid != cur_pid) {
	301	ehca_err(qp->ib_qp.device,
	302	"Invalid caller pid=%x ownpid=%x",
	303	cur_pid, pd->ownpid);
	304	return -ENOMEM;
	305	}
	306
	307	if (!qp->ib_qp.uobject \|\| qp->ib_qp.uobject->context != context)
	308	return -EINVAL;
	309
4c34bdf5 HNN	310	ret = ehca_mmap_qp(vma, qp, rsrc_type);
	311	if (unlikely(ret)) {
	312	ehca_err(qp->ib_qp.device,
	313	"ehca_mmap_qp() failed rc=%x qp_num=%x",
	314	ret, qp->ib_qp.qp_num);
	315	return ret;
fab97220 HS	316	}
	317	break;
	318
	319	default:
	320	ehca_gen_err("bad queue type %x", q_type);
	321	return -EINVAL;
	322	}
	323
	324	return 0;
	325	}