[deliverable/linux.git] / drivers / infiniband / hw / cxgb3 / cxio_resource.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.
 */
/* Crude resource management */
#include <linux/kernel.h>
#include <linux/random.h>
#include <linux/slab.h>
#include <linux/kfifo.h>
#include <linux/spinlock.h>
#include <linux/errno.h>
#include "cxio_resource.h"
#include "cxio_hal.h"

static struct kfifo *rhdl_fifo;
static spinlock_t rhdl_fifo_lock;

#define RANDOM_SIZE 16

static int __cxio_init_resource_fifo(struct kfifo **fifo,
				   spinlock_t *fifo_lock,
				   u32 nr, u32 skip_low,
				   u32 skip_high,
				   int random)
{
	u32 i, j, entry = 0, idx;
	u32 random_bytes;
	u32 rarray[16];
	spin_lock_init(fifo_lock);

	*fifo = kfifo_alloc(nr * sizeof(u32), GFP_KERNEL, fifo_lock);
	if (IS_ERR(*fifo))
		return -ENOMEM;

	for (i = 0; i < skip_low + skip_high; i++)
		__kfifo_put(*fifo, (unsigned char *) &entry, sizeof(u32));
	if (random) {
		j = 0;
		random_bytes = random32();
		for (i = 0; i < RANDOM_SIZE; i++)
			rarray[i] = i + skip_low;
		for (i = skip_low + RANDOM_SIZE; i < nr - skip_high; i++) {
			if (j >= RANDOM_SIZE) {
				j = 0;
				random_bytes = random32();
			}
			idx = (random_bytes >> (j * 2)) & 0xF;
			__kfifo_put(*fifo,
				(unsigned char *) &rarray[idx],
				sizeof(u32));
			rarray[idx] = i;
			j++;
		}
		for (i = 0; i < RANDOM_SIZE; i++)
			__kfifo_put(*fifo,
				(unsigned char *) &rarray[i],
				sizeof(u32));
	} else
		for (i = skip_low; i < nr - skip_high; i++)
			__kfifo_put(*fifo, (unsigned char *) &i, sizeof(u32));

	for (i = 0; i < skip_low + skip_high; i++)
		kfifo_get(*fifo, (unsigned char *) &entry, sizeof(u32));
	return 0;
}

static int cxio_init_resource_fifo(struct kfifo **fifo, spinlock_t * fifo_lock,
				   u32 nr, u32 skip_low, u32 skip_high)
{
	return (__cxio_init_resource_fifo(fifo, fifo_lock, nr, skip_low,
					  skip_high, 0));
}

static int cxio_init_resource_fifo_random(struct kfifo **fifo,
				   spinlock_t * fifo_lock,
				   u32 nr, u32 skip_low, u32 skip_high)
{

	return (__cxio_init_resource_fifo(fifo, fifo_lock, nr, skip_low,
					  skip_high, 1));
}

static int cxio_init_qpid_fifo(struct cxio_rdev *rdev_p)
{
	u32 i;

	spin_lock_init(&rdev_p->rscp->qpid_fifo_lock);

	rdev_p->rscp->qpid_fifo = kfifo_alloc(T3_MAX_NUM_QP * sizeof(u32),
					      GFP_KERNEL,
					      &rdev_p->rscp->qpid_fifo_lock);
	if (IS_ERR(rdev_p->rscp->qpid_fifo))
		return -ENOMEM;

	for (i = 16; i < T3_MAX_NUM_QP; i++)
		if (!(i & rdev_p->qpmask))
			__kfifo_put(rdev_p->rscp->qpid_fifo,
				    (unsigned char *) &i, sizeof(u32));
	return 0;
}

int cxio_hal_init_rhdl_resource(u32 nr_rhdl)
{
	return cxio_init_resource_fifo(&rhdl_fifo, &rhdl_fifo_lock, nr_rhdl, 1,
				       0);
}

void cxio_hal_destroy_rhdl_resource(void)
{
	kfifo_free(rhdl_fifo);
}

/* nr_* must be power of 2 */
int cxio_hal_init_resource(struct cxio_rdev *rdev_p,
			   u32 nr_tpt, u32 nr_pbl,
			   u32 nr_rqt, u32 nr_qpid, u32 nr_cqid, u32 nr_pdid)
{
	int err = 0;
	struct cxio_hal_resource *rscp;

	rscp = kmalloc(sizeof(*rscp), GFP_KERNEL);
	if (!rscp)
		return -ENOMEM;
	rdev_p->rscp = rscp;
	err = cxio_init_resource_fifo_random(&rscp->tpt_fifo,
				      &rscp->tpt_fifo_lock,
				      nr_tpt, 1, 0);
	if (err)
		goto tpt_err;
	err = cxio_init_qpid_fifo(rdev_p);
	if (err)
		goto qpid_err;
	err = cxio_init_resource_fifo(&rscp->cqid_fifo, &rscp->cqid_fifo_lock,
				      nr_cqid, 1, 0);
	if (err)
		goto cqid_err;
	err = cxio_init_resource_fifo(&rscp->pdid_fifo, &rscp->pdid_fifo_lock,
				      nr_pdid, 1, 0);
	if (err)
		goto pdid_err;
	return 0;
pdid_err:
	kfifo_free(rscp->cqid_fifo);
cqid_err:
	kfifo_free(rscp->qpid_fifo);
qpid_err:
	kfifo_free(rscp->tpt_fifo);
tpt_err:
	return -ENOMEM;
}

/*
 * returns 0 if no resource available
 */
static u32 cxio_hal_get_resource(struct kfifo *fifo)
{
	u32 entry;
	if (kfifo_get(fifo, (unsigned char *) &entry, sizeof(u32)))
		return entry;
	else
		return 0;	/* fifo emptry */
}

static void cxio_hal_put_resource(struct kfifo *fifo, u32 entry)
{
	BUG_ON(kfifo_put(fifo, (unsigned char *) &entry, sizeof(u32)) == 0);
}

u32 cxio_hal_get_stag(struct cxio_hal_resource *rscp)
{
	return cxio_hal_get_resource(rscp->tpt_fifo);
}

void cxio_hal_put_stag(struct cxio_hal_resource *rscp, u32 stag)
{
	cxio_hal_put_resource(rscp->tpt_fifo, stag);
}

u32 cxio_hal_get_qpid(struct cxio_hal_resource *rscp)
{
	u32 qpid = cxio_hal_get_resource(rscp->qpid_fifo);
	PDBG("%s qpid 0x%x\n", __FUNCTION__, qpid);
	return qpid;
}

void cxio_hal_put_qpid(struct cxio_hal_resource *rscp, u32 qpid)
{
	PDBG("%s qpid 0x%x\n", __FUNCTION__, qpid);
	cxio_hal_put_resource(rscp->qpid_fifo, qpid);
}

u32 cxio_hal_get_cqid(struct cxio_hal_resource *rscp)
{
	return cxio_hal_get_resource(rscp->cqid_fifo);
}

void cxio_hal_put_cqid(struct cxio_hal_resource *rscp, u32 cqid)
{
	cxio_hal_put_resource(rscp->cqid_fifo, cqid);
}

u32 cxio_hal_get_pdid(struct cxio_hal_resource *rscp)
{
	return cxio_hal_get_resource(rscp->pdid_fifo);
}

void cxio_hal_put_pdid(struct cxio_hal_resource *rscp, u32 pdid)
{
	cxio_hal_put_resource(rscp->pdid_fifo, pdid);
}

void cxio_hal_destroy_resource(struct cxio_hal_resource *rscp)
{
	kfifo_free(rscp->tpt_fifo);
	kfifo_free(rscp->cqid_fifo);
	kfifo_free(rscp->qpid_fifo);
	kfifo_free(rscp->pdid_fifo);
	kfree(rscp);
}

/*
 * PBL Memory Manager.  Uses Linux generic allocator.
 */

#define MIN_PBL_SHIFT 8			/* 256B == min PBL size (32 entries) */
#define PBL_CHUNK 2*1024*1024

u32 cxio_hal_pblpool_alloc(struct cxio_rdev *rdev_p, int size)
{
	unsigned long addr = gen_pool_alloc(rdev_p->pbl_pool, size);
	PDBG("%s addr 0x%x size %d\n", __FUNCTION__, (u32)addr, size);
	return (u32)addr;
}

void cxio_hal_pblpool_free(struct cxio_rdev *rdev_p, u32 addr, int size)
{
	PDBG("%s addr 0x%x size %d\n", __FUNCTION__, addr, size);
	gen_pool_free(rdev_p->pbl_pool, (unsigned long)addr, size);
}

int cxio_hal_pblpool_create(struct cxio_rdev *rdev_p)
{
	unsigned long i;
	rdev_p->pbl_pool = gen_pool_create(MIN_PBL_SHIFT, -1);
	if (rdev_p->pbl_pool)
		for (i = rdev_p->rnic_info.pbl_base;
		     i <= rdev_p->rnic_info.pbl_top - PBL_CHUNK + 1;
		     i += PBL_CHUNK)
			gen_pool_add(rdev_p->pbl_pool, i, PBL_CHUNK, -1);
	return rdev_p->pbl_pool ? 0 : -ENOMEM;
}

void cxio_hal_pblpool_destroy(struct cxio_rdev *rdev_p)
{
	gen_pool_destroy(rdev_p->pbl_pool);
}

/*
 * RQT Memory Manager.  Uses Linux generic allocator.
 */

#define MIN_RQT_SHIFT 10	/* 1KB == mini RQT size (16 entries) */
#define RQT_CHUNK 2*1024*1024

u32 cxio_hal_rqtpool_alloc(struct cxio_rdev *rdev_p, int size)
{
	unsigned long addr = gen_pool_alloc(rdev_p->rqt_pool, size << 6);
	PDBG("%s addr 0x%x size %d\n", __FUNCTION__, (u32)addr, size << 6);
	return (u32)addr;
}

void cxio_hal_rqtpool_free(struct cxio_rdev *rdev_p, u32 addr, int size)
{
	PDBG("%s addr 0x%x size %d\n", __FUNCTION__, addr, size << 6);
	gen_pool_free(rdev_p->rqt_pool, (unsigned long)addr, size << 6);
}

int cxio_hal_rqtpool_create(struct cxio_rdev *rdev_p)
{
	unsigned long i;
	rdev_p->rqt_pool = gen_pool_create(MIN_RQT_SHIFT, -1);
	if (rdev_p->rqt_pool)
		for (i = rdev_p->rnic_info.rqt_base;
		     i <= rdev_p->rnic_info.rqt_top - RQT_CHUNK + 1;
		     i += RQT_CHUNK)
			gen_pool_add(rdev_p->rqt_pool, i, RQT_CHUNK, -1);
	return rdev_p->rqt_pool ? 0 : -ENOMEM;
}

void cxio_hal_rqtpool_destroy(struct cxio_rdev *rdev_p)
{
	gen_pool_destroy(rdev_p->rqt_pool);
}
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	*/
	32	/* Crude resource management */
	33	#include <linux/kernel.h>
	34	#include <linux/random.h>
	35	#include <linux/slab.h>
	36	#include <linux/kfifo.h>
	37	#include <linux/spinlock.h>
	38	#include <linux/errno.h>
	39	#include "cxio_resource.h"
	40	#include "cxio_hal.h"
	41
	42	static struct kfifo *rhdl_fifo;
	43	static spinlock_t rhdl_fifo_lock;
	44
	45	#define RANDOM_SIZE 16
	46
	47	static int __cxio_init_resource_fifo(struct kfifo **fifo,
	48	spinlock_t *fifo_lock,
	49	u32 nr, u32 skip_low,
	50	u32 skip_high,
	51	int random)
	52	{
	53	u32 i, j, entry = 0, idx;
	54	u32 random_bytes;
	55	u32 rarray[16];
	56	spin_lock_init(fifo_lock);
	57
	58	fifo = kfifo_alloc(nr sizeof(u32), GFP_KERNEL, fifo_lock);
	59	if (IS_ERR(*fifo))
	60	return -ENOMEM;
	61
	62	for (i = 0; i < skip_low + skip_high; i++)
	63	__kfifo_put(fifo, (unsigned char ) &entry, sizeof(u32));
	64	if (random) {
	65	j = 0;
	66	random_bytes = random32();
67	for (i = 0; i < RANDOM_SIZE; i++)
68	rarray[i] = i + skip_low;
69	for (i = skip_low + RANDOM_SIZE; i < nr - skip_high; i++) {
70	if (j >= RANDOM_SIZE) {
71	j = 0;
72	random_bytes = random32();
73	}
74	idx = (random_bytes >> (j * 2)) & 0xF;
75	__kfifo_put(*fifo,
76	(unsigned char *) &rarray[idx],
77	sizeof(u32));
78	rarray[idx] = i;
79	j++;
80	}
81	for (i = 0; i < RANDOM_SIZE; i++)
82	__kfifo_put(*fifo,
83	(unsigned char *) &rarray[i],
84	sizeof(u32));
85	} else
86	for (i = skip_low; i < nr - skip_high; i++)
87	__kfifo_put(fifo, (unsigned char ) &i, sizeof(u32));
88
89	for (i = 0; i < skip_low + skip_high; i++)
90	kfifo_get(fifo, (unsigned char ) &entry, sizeof(u32));
91	return 0;
92	}
93
94	static int cxio_init_resource_fifo(struct kfifo *fifo, spinlock_t fifo_lock,
95	u32 nr, u32 skip_low, u32 skip_high)
96	{
97	return (__cxio_init_resource_fifo(fifo, fifo_lock, nr, skip_low,
98	skip_high, 0));
99	}
100
101	static int cxio_init_resource_fifo_random(struct kfifo **fifo,
102	spinlock_t * fifo_lock,
103	u32 nr, u32 skip_low, u32 skip_high)
104	{
105
106	return (__cxio_init_resource_fifo(fifo, fifo_lock, nr, skip_low,
107	skip_high, 1));
108	}
109
110	static int cxio_init_qpid_fifo(struct cxio_rdev *rdev_p)
111	{
112	u32 i;
113
114	spin_lock_init(&rdev_p->rscp->qpid_fifo_lock);
115
116	rdev_p->rscp->qpid_fifo = kfifo_alloc(T3_MAX_NUM_QP * sizeof(u32),
117	GFP_KERNEL,
118	&rdev_p->rscp->qpid_fifo_lock);
119	if (IS_ERR(rdev_p->rscp->qpid_fifo))
120	return -ENOMEM;
121
122	for (i = 16; i < T3_MAX_NUM_QP; i++)
123	if (!(i & rdev_p->qpmask))
124	__kfifo_put(rdev_p->rscp->qpid_fifo,
125	(unsigned char *) &i, sizeof(u32));
126	return 0;
127	}
128
129	int cxio_hal_init_rhdl_resource(u32 nr_rhdl)
130	{
131	return cxio_init_resource_fifo(&rhdl_fifo, &rhdl_fifo_lock, nr_rhdl, 1,
132	0);
133	}
134
135	void cxio_hal_destroy_rhdl_resource(void)
136	{
137	kfifo_free(rhdl_fifo);
138	}
139
140	/* nr_* must be power of 2 */
141	int cxio_hal_init_resource(struct cxio_rdev *rdev_p,
142	u32 nr_tpt, u32 nr_pbl,
143	u32 nr_rqt, u32 nr_qpid, u32 nr_cqid, u32 nr_pdid)
144	{
145	int err = 0;
146	struct cxio_hal_resource *rscp;
147
148	rscp = kmalloc(sizeof(*rscp), GFP_KERNEL);
149	if (!rscp)
150	return -ENOMEM;
151	rdev_p->rscp = rscp;
152	err = cxio_init_resource_fifo_random(&rscp->tpt_fifo,
153	&rscp->tpt_fifo_lock,
154	nr_tpt, 1, 0);
155	if (err)
156	goto tpt_err;
157	err = cxio_init_qpid_fifo(rdev_p);
158	if (err)
159	goto qpid_err;
160	err = cxio_init_resource_fifo(&rscp->cqid_fifo, &rscp->cqid_fifo_lock,
161	nr_cqid, 1, 0);
162	if (err)
163	goto cqid_err;
164	err = cxio_init_resource_fifo(&rscp->pdid_fifo, &rscp->pdid_fifo_lock,
165	nr_pdid, 1, 0);
166	if (err)
167	goto pdid_err;
168	return 0;
169	pdid_err:
170	kfifo_free(rscp->cqid_fifo);
171	cqid_err:
172	kfifo_free(rscp->qpid_fifo);
173	qpid_err:
174	kfifo_free(rscp->tpt_fifo);
175	tpt_err:
176	return -ENOMEM;
177	}
178
179	/*
180	* returns 0 if no resource available
181	*/
2b540355	182	static u32 cxio_hal_get_resource(struct kfifo *fifo)
b038ced7 SW	183	{
	184	u32 entry;
	185	if (kfifo_get(fifo, (unsigned char *) &entry, sizeof(u32)))
	186	return entry;
	187	else
	188	return 0; /* fifo emptry */
	189	}
	190
2b540355	191	static void cxio_hal_put_resource(struct kfifo *fifo, u32 entry)
b038ced7 SW	192	{
	193	BUG_ON(kfifo_put(fifo, (unsigned char *) &entry, sizeof(u32)) == 0);
	194	}
	195
b038ced7 SW	196	u32 cxio_hal_get_stag(struct cxio_hal_resource *rscp)
	197	{
	198	return cxio_hal_get_resource(rscp->tpt_fifo);
	199	}
	200
	201	void cxio_hal_put_stag(struct cxio_hal_resource *rscp, u32 stag)
	202	{
	203	cxio_hal_put_resource(rscp->tpt_fifo, stag);
	204	}
	205
	206	u32 cxio_hal_get_qpid(struct cxio_hal_resource *rscp)
	207	{
	208	u32 qpid = cxio_hal_get_resource(rscp->qpid_fifo);
	209	PDBG("%s qpid 0x%x\n", __FUNCTION__, qpid);
	210	return qpid;
	211	}
	212
	213	void cxio_hal_put_qpid(struct cxio_hal_resource *rscp, u32 qpid)
	214	{
	215	PDBG("%s qpid 0x%x\n", __FUNCTION__, qpid);
	216	cxio_hal_put_resource(rscp->qpid_fifo, qpid);
	217	}
	218
	219	u32 cxio_hal_get_cqid(struct cxio_hal_resource *rscp)
	220	{
	221	return cxio_hal_get_resource(rscp->cqid_fifo);
	222	}
	223
	224	void cxio_hal_put_cqid(struct cxio_hal_resource *rscp, u32 cqid)
	225	{
	226	cxio_hal_put_resource(rscp->cqid_fifo, cqid);
	227	}
	228
	229	u32 cxio_hal_get_pdid(struct cxio_hal_resource *rscp)
	230	{
	231	return cxio_hal_get_resource(rscp->pdid_fifo);
	232	}
	233
	234	void cxio_hal_put_pdid(struct cxio_hal_resource *rscp, u32 pdid)
	235	{
	236	cxio_hal_put_resource(rscp->pdid_fifo, pdid);
	237	}
	238
	239	void cxio_hal_destroy_resource(struct cxio_hal_resource *rscp)
	240	{
	241	kfifo_free(rscp->tpt_fifo);
	242	kfifo_free(rscp->cqid_fifo);
	243	kfifo_free(rscp->qpid_fifo);
	244	kfifo_free(rscp->pdid_fifo);
	245	kfree(rscp);
	246	}
	247
	248	/*
	249	* PBL Memory Manager. Uses Linux generic allocator.
	250	*/
	251
	252	#define MIN_PBL_SHIFT 8 /* 256B == min PBL size (32 entries) */
	253	#define PBL_CHUNK 210241024
	254
	255	u32 cxio_hal_pblpool_alloc(struct cxio_rdev *rdev_p, int size)
	256	{
	257	unsigned long addr = gen_pool_alloc(rdev_p->pbl_pool, size);
	258	PDBG("%s addr 0x%x size %d\n", __FUNCTION__, (u32)addr, size);
	259	return (u32)addr;
260	}
261
262	void cxio_hal_pblpool_free(struct cxio_rdev *rdev_p, u32 addr, int size)
263	{
264	PDBG("%s addr 0x%x size %d\n", __FUNCTION__, addr, size);
265	gen_pool_free(rdev_p->pbl_pool, (unsigned long)addr, size);
266	}
267
268	int cxio_hal_pblpool_create(struct cxio_rdev *rdev_p)
269	{
270	unsigned long i;
271	rdev_p->pbl_pool = gen_pool_create(MIN_PBL_SHIFT, -1);
272	if (rdev_p->pbl_pool)
273	for (i = rdev_p->rnic_info.pbl_base;
274	i <= rdev_p->rnic_info.pbl_top - PBL_CHUNK + 1;
275	i += PBL_CHUNK)
276	gen_pool_add(rdev_p->pbl_pool, i, PBL_CHUNK, -1);
277	return rdev_p->pbl_pool ? 0 : -ENOMEM;
278	}
279
280	void cxio_hal_pblpool_destroy(struct cxio_rdev *rdev_p)
281	{
282	gen_pool_destroy(rdev_p->pbl_pool);
283	}
284
285	/*
286	* RQT Memory Manager. Uses Linux generic allocator.
287	*/
288
289	#define MIN_RQT_SHIFT 10 /* 1KB == mini RQT size (16 entries) */
290	#define RQT_CHUNK 210241024
291
292	u32 cxio_hal_rqtpool_alloc(struct cxio_rdev *rdev_p, int size)
293	{
294	unsigned long addr = gen_pool_alloc(rdev_p->rqt_pool, size << 6);
295	PDBG("%s addr 0x%x size %d\n", __FUNCTION__, (u32)addr, size << 6);
296	return (u32)addr;
297	}
298
299	void cxio_hal_rqtpool_free(struct cxio_rdev *rdev_p, u32 addr, int size)
300	{
301	PDBG("%s addr 0x%x size %d\n", __FUNCTION__, addr, size << 6);
302	gen_pool_free(rdev_p->rqt_pool, (unsigned long)addr, size << 6);
303	}
304
305	int cxio_hal_rqtpool_create(struct cxio_rdev *rdev_p)
306	{
307	unsigned long i;
308	rdev_p->rqt_pool = gen_pool_create(MIN_RQT_SHIFT, -1);
309	if (rdev_p->rqt_pool)
310	for (i = rdev_p->rnic_info.rqt_base;
311	i <= rdev_p->rnic_info.rqt_top - RQT_CHUNK + 1;
312	i += RQT_CHUNK)
313	gen_pool_add(rdev_p->rqt_pool, i, RQT_CHUNK, -1);
314	return rdev_p->rqt_pool ? 0 : -ENOMEM;
315	}
316
317	void cxio_hal_rqtpool_destroy(struct cxio_rdev *rdev_p)
318	{
319	gen_pool_destroy(rdev_p->rqt_pool);
320	}