![Steve Wise](/assets/img/avatar_default.png)
Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
454 lines
12 KiB
C
454 lines
12 KiB
C
/*
|
|
* Copyright (c) 2009-2010 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/spinlock.h>
|
|
#include <linux/genalloc.h>
|
|
#include <linux/ratelimit.h>
|
|
#include "iw_cxgb4.h"
|
|
|
|
static int c4iw_init_qid_table(struct c4iw_rdev *rdev)
|
|
{
|
|
u32 i;
|
|
|
|
if (c4iw_id_table_alloc(&rdev->resource.qid_table,
|
|
rdev->lldi.vr->qp.start,
|
|
rdev->lldi.vr->qp.size,
|
|
rdev->lldi.vr->qp.size, 0))
|
|
return -ENOMEM;
|
|
|
|
for (i = rdev->lldi.vr->qp.start;
|
|
i < rdev->lldi.vr->qp.start + rdev->lldi.vr->qp.size; i++)
|
|
if (!(i & rdev->qpmask))
|
|
c4iw_id_free(&rdev->resource.qid_table, i);
|
|
return 0;
|
|
}
|
|
|
|
/* nr_* must be power of 2 */
|
|
int c4iw_init_resource(struct c4iw_rdev *rdev, u32 nr_tpt, u32 nr_pdid)
|
|
{
|
|
int err = 0;
|
|
err = c4iw_id_table_alloc(&rdev->resource.tpt_table, 0, nr_tpt, 1,
|
|
C4IW_ID_TABLE_F_RANDOM);
|
|
if (err)
|
|
goto tpt_err;
|
|
err = c4iw_init_qid_table(rdev);
|
|
if (err)
|
|
goto qid_err;
|
|
err = c4iw_id_table_alloc(&rdev->resource.pdid_table, 0,
|
|
nr_pdid, 1, 0);
|
|
if (err)
|
|
goto pdid_err;
|
|
return 0;
|
|
pdid_err:
|
|
c4iw_id_table_free(&rdev->resource.qid_table);
|
|
qid_err:
|
|
c4iw_id_table_free(&rdev->resource.tpt_table);
|
|
tpt_err:
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/*
|
|
* returns 0 if no resource available
|
|
*/
|
|
u32 c4iw_get_resource(struct c4iw_id_table *id_table)
|
|
{
|
|
u32 entry;
|
|
entry = c4iw_id_alloc(id_table);
|
|
if (entry == (u32)(-1))
|
|
return 0;
|
|
return entry;
|
|
}
|
|
|
|
void c4iw_put_resource(struct c4iw_id_table *id_table, u32 entry)
|
|
{
|
|
PDBG("%s entry 0x%x\n", __func__, entry);
|
|
c4iw_id_free(id_table, entry);
|
|
}
|
|
|
|
u32 c4iw_get_cqid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx)
|
|
{
|
|
struct c4iw_qid_list *entry;
|
|
u32 qid;
|
|
int i;
|
|
|
|
mutex_lock(&uctx->lock);
|
|
if (!list_empty(&uctx->cqids)) {
|
|
entry = list_entry(uctx->cqids.next, struct c4iw_qid_list,
|
|
entry);
|
|
list_del(&entry->entry);
|
|
qid = entry->qid;
|
|
kfree(entry);
|
|
} else {
|
|
qid = c4iw_get_resource(&rdev->resource.qid_table);
|
|
if (!qid)
|
|
goto out;
|
|
mutex_lock(&rdev->stats.lock);
|
|
rdev->stats.qid.cur += rdev->qpmask + 1;
|
|
mutex_unlock(&rdev->stats.lock);
|
|
for (i = qid+1; i & rdev->qpmask; i++) {
|
|
entry = kmalloc(sizeof *entry, GFP_KERNEL);
|
|
if (!entry)
|
|
goto out;
|
|
entry->qid = i;
|
|
list_add_tail(&entry->entry, &uctx->cqids);
|
|
}
|
|
|
|
/*
|
|
* now put the same ids on the qp list since they all
|
|
* map to the same db/gts page.
|
|
*/
|
|
entry = kmalloc(sizeof *entry, GFP_KERNEL);
|
|
if (!entry)
|
|
goto out;
|
|
entry->qid = qid;
|
|
list_add_tail(&entry->entry, &uctx->qpids);
|
|
for (i = qid+1; i & rdev->qpmask; i++) {
|
|
entry = kmalloc(sizeof *entry, GFP_KERNEL);
|
|
if (!entry)
|
|
goto out;
|
|
entry->qid = i;
|
|
list_add_tail(&entry->entry, &uctx->qpids);
|
|
}
|
|
}
|
|
out:
|
|
mutex_unlock(&uctx->lock);
|
|
PDBG("%s qid 0x%x\n", __func__, qid);
|
|
mutex_lock(&rdev->stats.lock);
|
|
if (rdev->stats.qid.cur > rdev->stats.qid.max)
|
|
rdev->stats.qid.max = rdev->stats.qid.cur;
|
|
mutex_unlock(&rdev->stats.lock);
|
|
return qid;
|
|
}
|
|
|
|
void c4iw_put_cqid(struct c4iw_rdev *rdev, u32 qid,
|
|
struct c4iw_dev_ucontext *uctx)
|
|
{
|
|
struct c4iw_qid_list *entry;
|
|
|
|
entry = kmalloc(sizeof *entry, GFP_KERNEL);
|
|
if (!entry)
|
|
return;
|
|
PDBG("%s qid 0x%x\n", __func__, qid);
|
|
entry->qid = qid;
|
|
mutex_lock(&uctx->lock);
|
|
list_add_tail(&entry->entry, &uctx->cqids);
|
|
mutex_unlock(&uctx->lock);
|
|
}
|
|
|
|
u32 c4iw_get_qpid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx)
|
|
{
|
|
struct c4iw_qid_list *entry;
|
|
u32 qid;
|
|
int i;
|
|
|
|
mutex_lock(&uctx->lock);
|
|
if (!list_empty(&uctx->qpids)) {
|
|
entry = list_entry(uctx->qpids.next, struct c4iw_qid_list,
|
|
entry);
|
|
list_del(&entry->entry);
|
|
qid = entry->qid;
|
|
kfree(entry);
|
|
} else {
|
|
qid = c4iw_get_resource(&rdev->resource.qid_table);
|
|
if (!qid) {
|
|
mutex_lock(&rdev->stats.lock);
|
|
rdev->stats.qid.fail++;
|
|
mutex_unlock(&rdev->stats.lock);
|
|
goto out;
|
|
}
|
|
mutex_lock(&rdev->stats.lock);
|
|
rdev->stats.qid.cur += rdev->qpmask + 1;
|
|
mutex_unlock(&rdev->stats.lock);
|
|
for (i = qid+1; i & rdev->qpmask; i++) {
|
|
entry = kmalloc(sizeof *entry, GFP_KERNEL);
|
|
if (!entry)
|
|
goto out;
|
|
entry->qid = i;
|
|
list_add_tail(&entry->entry, &uctx->qpids);
|
|
}
|
|
|
|
/*
|
|
* now put the same ids on the cq list since they all
|
|
* map to the same db/gts page.
|
|
*/
|
|
entry = kmalloc(sizeof *entry, GFP_KERNEL);
|
|
if (!entry)
|
|
goto out;
|
|
entry->qid = qid;
|
|
list_add_tail(&entry->entry, &uctx->cqids);
|
|
for (i = qid; i & rdev->qpmask; i++) {
|
|
entry = kmalloc(sizeof *entry, GFP_KERNEL);
|
|
if (!entry)
|
|
goto out;
|
|
entry->qid = i;
|
|
list_add_tail(&entry->entry, &uctx->cqids);
|
|
}
|
|
}
|
|
out:
|
|
mutex_unlock(&uctx->lock);
|
|
PDBG("%s qid 0x%x\n", __func__, qid);
|
|
mutex_lock(&rdev->stats.lock);
|
|
if (rdev->stats.qid.cur > rdev->stats.qid.max)
|
|
rdev->stats.qid.max = rdev->stats.qid.cur;
|
|
mutex_unlock(&rdev->stats.lock);
|
|
return qid;
|
|
}
|
|
|
|
void c4iw_put_qpid(struct c4iw_rdev *rdev, u32 qid,
|
|
struct c4iw_dev_ucontext *uctx)
|
|
{
|
|
struct c4iw_qid_list *entry;
|
|
|
|
entry = kmalloc(sizeof *entry, GFP_KERNEL);
|
|
if (!entry)
|
|
return;
|
|
PDBG("%s qid 0x%x\n", __func__, qid);
|
|
entry->qid = qid;
|
|
mutex_lock(&uctx->lock);
|
|
list_add_tail(&entry->entry, &uctx->qpids);
|
|
mutex_unlock(&uctx->lock);
|
|
}
|
|
|
|
void c4iw_destroy_resource(struct c4iw_resource *rscp)
|
|
{
|
|
c4iw_id_table_free(&rscp->tpt_table);
|
|
c4iw_id_table_free(&rscp->qid_table);
|
|
c4iw_id_table_free(&rscp->pdid_table);
|
|
}
|
|
|
|
/*
|
|
* PBL Memory Manager. Uses Linux generic allocator.
|
|
*/
|
|
|
|
#define MIN_PBL_SHIFT 8 /* 256B == min PBL size (32 entries) */
|
|
|
|
u32 c4iw_pblpool_alloc(struct c4iw_rdev *rdev, int size)
|
|
{
|
|
unsigned long addr = gen_pool_alloc(rdev->pbl_pool, size);
|
|
PDBG("%s addr 0x%x size %d\n", __func__, (u32)addr, size);
|
|
mutex_lock(&rdev->stats.lock);
|
|
if (addr) {
|
|
rdev->stats.pbl.cur += roundup(size, 1 << MIN_PBL_SHIFT);
|
|
if (rdev->stats.pbl.cur > rdev->stats.pbl.max)
|
|
rdev->stats.pbl.max = rdev->stats.pbl.cur;
|
|
} else
|
|
rdev->stats.pbl.fail++;
|
|
mutex_unlock(&rdev->stats.lock);
|
|
return (u32)addr;
|
|
}
|
|
|
|
void c4iw_pblpool_free(struct c4iw_rdev *rdev, u32 addr, int size)
|
|
{
|
|
PDBG("%s addr 0x%x size %d\n", __func__, addr, size);
|
|
mutex_lock(&rdev->stats.lock);
|
|
rdev->stats.pbl.cur -= roundup(size, 1 << MIN_PBL_SHIFT);
|
|
mutex_unlock(&rdev->stats.lock);
|
|
gen_pool_free(rdev->pbl_pool, (unsigned long)addr, size);
|
|
}
|
|
|
|
int c4iw_pblpool_create(struct c4iw_rdev *rdev)
|
|
{
|
|
unsigned pbl_start, pbl_chunk, pbl_top;
|
|
|
|
rdev->pbl_pool = gen_pool_create(MIN_PBL_SHIFT, -1);
|
|
if (!rdev->pbl_pool)
|
|
return -ENOMEM;
|
|
|
|
pbl_start = rdev->lldi.vr->pbl.start;
|
|
pbl_chunk = rdev->lldi.vr->pbl.size;
|
|
pbl_top = pbl_start + pbl_chunk;
|
|
|
|
while (pbl_start < pbl_top) {
|
|
pbl_chunk = min(pbl_top - pbl_start + 1, pbl_chunk);
|
|
if (gen_pool_add(rdev->pbl_pool, pbl_start, pbl_chunk, -1)) {
|
|
PDBG("%s failed to add PBL chunk (%x/%x)\n",
|
|
__func__, pbl_start, pbl_chunk);
|
|
if (pbl_chunk <= 1024 << MIN_PBL_SHIFT) {
|
|
printk(KERN_WARNING MOD
|
|
"Failed to add all PBL chunks (%x/%x)\n",
|
|
pbl_start,
|
|
pbl_top - pbl_start);
|
|
return 0;
|
|
}
|
|
pbl_chunk >>= 1;
|
|
} else {
|
|
PDBG("%s added PBL chunk (%x/%x)\n",
|
|
__func__, pbl_start, pbl_chunk);
|
|
pbl_start += pbl_chunk;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void c4iw_pblpool_destroy(struct c4iw_rdev *rdev)
|
|
{
|
|
gen_pool_destroy(rdev->pbl_pool);
|
|
}
|
|
|
|
/*
|
|
* RQT Memory Manager. Uses Linux generic allocator.
|
|
*/
|
|
|
|
#define MIN_RQT_SHIFT 10 /* 1KB == min RQT size (16 entries) */
|
|
|
|
u32 c4iw_rqtpool_alloc(struct c4iw_rdev *rdev, int size)
|
|
{
|
|
unsigned long addr = gen_pool_alloc(rdev->rqt_pool, size << 6);
|
|
PDBG("%s addr 0x%x size %d\n", __func__, (u32)addr, size << 6);
|
|
if (!addr)
|
|
pr_warn_ratelimited(MOD "%s: Out of RQT memory\n",
|
|
pci_name(rdev->lldi.pdev));
|
|
mutex_lock(&rdev->stats.lock);
|
|
if (addr) {
|
|
rdev->stats.rqt.cur += roundup(size << 6, 1 << MIN_RQT_SHIFT);
|
|
if (rdev->stats.rqt.cur > rdev->stats.rqt.max)
|
|
rdev->stats.rqt.max = rdev->stats.rqt.cur;
|
|
} else
|
|
rdev->stats.rqt.fail++;
|
|
mutex_unlock(&rdev->stats.lock);
|
|
return (u32)addr;
|
|
}
|
|
|
|
void c4iw_rqtpool_free(struct c4iw_rdev *rdev, u32 addr, int size)
|
|
{
|
|
PDBG("%s addr 0x%x size %d\n", __func__, addr, size << 6);
|
|
mutex_lock(&rdev->stats.lock);
|
|
rdev->stats.rqt.cur -= roundup(size << 6, 1 << MIN_RQT_SHIFT);
|
|
mutex_unlock(&rdev->stats.lock);
|
|
gen_pool_free(rdev->rqt_pool, (unsigned long)addr, size << 6);
|
|
}
|
|
|
|
int c4iw_rqtpool_create(struct c4iw_rdev *rdev)
|
|
{
|
|
unsigned rqt_start, rqt_chunk, rqt_top;
|
|
|
|
rdev->rqt_pool = gen_pool_create(MIN_RQT_SHIFT, -1);
|
|
if (!rdev->rqt_pool)
|
|
return -ENOMEM;
|
|
|
|
rqt_start = rdev->lldi.vr->rq.start;
|
|
rqt_chunk = rdev->lldi.vr->rq.size;
|
|
rqt_top = rqt_start + rqt_chunk;
|
|
|
|
while (rqt_start < rqt_top) {
|
|
rqt_chunk = min(rqt_top - rqt_start + 1, rqt_chunk);
|
|
if (gen_pool_add(rdev->rqt_pool, rqt_start, rqt_chunk, -1)) {
|
|
PDBG("%s failed to add RQT chunk (%x/%x)\n",
|
|
__func__, rqt_start, rqt_chunk);
|
|
if (rqt_chunk <= 1024 << MIN_RQT_SHIFT) {
|
|
printk(KERN_WARNING MOD
|
|
"Failed to add all RQT chunks (%x/%x)\n",
|
|
rqt_start, rqt_top - rqt_start);
|
|
return 0;
|
|
}
|
|
rqt_chunk >>= 1;
|
|
} else {
|
|
PDBG("%s added RQT chunk (%x/%x)\n",
|
|
__func__, rqt_start, rqt_chunk);
|
|
rqt_start += rqt_chunk;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void c4iw_rqtpool_destroy(struct c4iw_rdev *rdev)
|
|
{
|
|
gen_pool_destroy(rdev->rqt_pool);
|
|
}
|
|
|
|
/*
|
|
* On-Chip QP Memory.
|
|
*/
|
|
#define MIN_OCQP_SHIFT 12 /* 4KB == min ocqp size */
|
|
|
|
u32 c4iw_ocqp_pool_alloc(struct c4iw_rdev *rdev, int size)
|
|
{
|
|
unsigned long addr = gen_pool_alloc(rdev->ocqp_pool, size);
|
|
PDBG("%s addr 0x%x size %d\n", __func__, (u32)addr, size);
|
|
if (addr) {
|
|
mutex_lock(&rdev->stats.lock);
|
|
rdev->stats.ocqp.cur += roundup(size, 1 << MIN_OCQP_SHIFT);
|
|
if (rdev->stats.ocqp.cur > rdev->stats.ocqp.max)
|
|
rdev->stats.ocqp.max = rdev->stats.ocqp.cur;
|
|
mutex_unlock(&rdev->stats.lock);
|
|
}
|
|
return (u32)addr;
|
|
}
|
|
|
|
void c4iw_ocqp_pool_free(struct c4iw_rdev *rdev, u32 addr, int size)
|
|
{
|
|
PDBG("%s addr 0x%x size %d\n", __func__, addr, size);
|
|
mutex_lock(&rdev->stats.lock);
|
|
rdev->stats.ocqp.cur -= roundup(size, 1 << MIN_OCQP_SHIFT);
|
|
mutex_unlock(&rdev->stats.lock);
|
|
gen_pool_free(rdev->ocqp_pool, (unsigned long)addr, size);
|
|
}
|
|
|
|
int c4iw_ocqp_pool_create(struct c4iw_rdev *rdev)
|
|
{
|
|
unsigned start, chunk, top;
|
|
|
|
rdev->ocqp_pool = gen_pool_create(MIN_OCQP_SHIFT, -1);
|
|
if (!rdev->ocqp_pool)
|
|
return -ENOMEM;
|
|
|
|
start = rdev->lldi.vr->ocq.start;
|
|
chunk = rdev->lldi.vr->ocq.size;
|
|
top = start + chunk;
|
|
|
|
while (start < top) {
|
|
chunk = min(top - start + 1, chunk);
|
|
if (gen_pool_add(rdev->ocqp_pool, start, chunk, -1)) {
|
|
PDBG("%s failed to add OCQP chunk (%x/%x)\n",
|
|
__func__, start, chunk);
|
|
if (chunk <= 1024 << MIN_OCQP_SHIFT) {
|
|
printk(KERN_WARNING MOD
|
|
"Failed to add all OCQP chunks (%x/%x)\n",
|
|
start, top - start);
|
|
return 0;
|
|
}
|
|
chunk >>= 1;
|
|
} else {
|
|
PDBG("%s added OCQP chunk (%x/%x)\n",
|
|
__func__, start, chunk);
|
|
start += chunk;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void c4iw_ocqp_pool_destroy(struct c4iw_rdev *rdev)
|
|
{
|
|
gen_pool_destroy(rdev->ocqp_pool);
|
|
}
|