arch/arm/plat-feroceon/mv_drivers_lsp/mv_neta/hwf/hwf_bm.c - kernel/prism - Git at Google

 /*******************************************************************************
 Copyright (C) Marvell International Ltd. and its affiliates

 This software file (the "File") is owned and distributed by Marvell
 International Ltd. and/or its affiliates ("Marvell") under the following
 alternative licensing terms.  Once you have made an election to distribute the
 File under one of the following license alternatives, please (i) delete this
 introductory statement regarding license alternatives, (ii) delete the two
 license alternatives that you have not elected to use and (iii) preserve the
 Marvell copyright notice above.


 ********************************************************************************
 Marvell GPL License Option

 If you received this File from Marvell, you may opt to use, redistribute and/or
 modify this File in accordance with the terms and conditions of the General
 Public License Version 2, June 1991 (the "GPL License"), a copy of which is
 available along with the File in the license.txt file or by writing to the Free
 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 or
 on the worldwide web at http://www.gnu.org/licenses/gpl.txt.

 THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE IMPLIED
 WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY
 DISCLAIMED.  The GPL License provides additional details about this warranty
 disclaimer.
 *******************************************************************************/
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/capability.h>
 #include <linux/kernel.h>
 #include <linux/platform_device.h>

 #include "gbe/mvNeta.h"
 #include "bm/mvBm.h"

 #include "net_dev/mv_netdev.h"

 static MV_BM_POOL	hwfBmPool[MV_BM_POOLS];


 static int mv_eth_hwf_pool_add(MV_BM_POOL *pBmPool, int bufNum)
 {
 	int      i;
 	void     *pVirt;
 	MV_ULONG physAddr;

 	/* Check total number of buffers doesn't exceed capacity */
 	if ((bufNum < 0) ||
 		((bufNum + pBmPool->bufNum) > (pBmPool->capacity))) {

 		mvOsPrintf("%s: to many %d buffers for BM pool #%d: capacity=%d, buf_num=%d\n",
 			   __func__, bufNum, pBmPool->pool, pBmPool->capacity, pBmPool->bufNum);
 		return 0;
 	}
 	/* Allocate buffers for the pool */
 	for (i = 0; i < bufNum; i++) {

 		pVirt = mvOsIoCachedMalloc(NULL, pBmPool->bufSize, &physAddr, NULL);
 		if (pVirt == NULL) {
 			mvOsPrintf("%s: Warning! Not all buffers of %d bytes allocated\n",
 						__func__, pBmPool->bufSize);
 			break;
 		}
 		mvBmPoolPut(pBmPool->pool, (MV_ULONG) physAddr);
 	}
 	pBmPool->bufNum += i;

 	mvOsPrintf("BM pool #%d for HWF: bufSize=%4d - %4d of %4d buffers added\n",
 	       pBmPool->pool, pBmPool->bufSize, i, bufNum);

 	return i;
 }

 /*******************************************************************************
  * mv_eth_hwf_bm_create - create BM pools used by the port for HWF only
  *
  * INPUT:
  *       int        port	- port number
  *
  * RETURN:   MV_STATUS
  *               MV_OK - Success, Others - Failure
  *
  *******************************************************************************/
 MV_STATUS mv_eth_hwf_bm_create(int port, int mtuPktSize)
 {
 	static bool		isFirst = true;
 	MV_BM_POOL		*pBmPool;
 	int				long_pool, short_pool;
 	int				long_buf_size, short_buf_size;

 	/* Check validity of the parameters */
 	if (mvNetaPortCheck(port))
 		return MV_FAIL;

 	/* For the first time - clean hwfBmPool array */
 	if (isFirst == true) {
 		memset(&hwfBmPool, 0, sizeof(hwfBmPool));
 		isFirst = false;
 	}

 	long_pool = mv_eth_bm_config_long_pool_get(port);
 	/* Check validity of the parameters */
 	if (mvNetaMaxCheck(long_pool,  MV_BM_POOLS))
 		return MV_FAIL;

 	/* For HWF Packet offset in the packet is 8 bytes */
 	long_buf_size = mv_eth_bm_config_pkt_size_get(long_pool);
 	if (long_buf_size == 0)
 		long_buf_size = mtuPktSize + 8;

 	/* Check validity of the parameters */
 	if (long_buf_size < (mtuPktSize + 8))
 		return MV_FAIL;

 	/* Create long pool */
 	pBmPool = &hwfBmPool[long_pool];
 	if (pBmPool->pVirt == NULL) {
 		/* Allocate new pool */
 		pBmPool->pVirt = mv_eth_bm_pool_create(long_pool, MV_BM_POOL_CAP_MAX, &pBmPool->physAddr);
 		if (pBmPool->pVirt == NULL) {
 			mvOsPrintf("%s: Can't allocate %d bytes for Long pool #%d of port #%d\n",
 					__func__, MV_BM_POOL_CAP_MAX * sizeof(MV_U32), long_pool, port);
 			return MV_OUT_OF_CPU_MEM;
 		}
 		pBmPool->pool = long_pool;
 		pBmPool->capacity = MV_BM_POOL_CAP_MAX;
 		pBmPool->bufSize = long_buf_size;
 	} else {
 		/* Share pool with other port - check buffer size */
 		if (long_buf_size > pBmPool->bufSize) {
 			/* The BM pool doesn't match the mtuPktSize */
 			mvOsPrintf("%s: longBufSize=%d is too match for the pool #%d (%d bytes)\n",
 						__func__, long_buf_size, pBmPool->pool, pBmPool->bufSize);
 			return MV_FAIL;
 		}
 	}
 	/* Set long pool buffer size */
 	mvNetaBmPoolBufSizeSet(port, long_pool, long_buf_size);

 	mv_eth_hwf_pool_add(pBmPool, mv_eth_bm_config_long_buf_num_get(port));

 	/* Create short pool */
 	short_pool = mv_eth_bm_config_short_pool_get(port);
 	short_buf_size = mv_eth_bm_config_pkt_size_get(short_pool);
 	if (short_pool != long_pool) {
 		pBmPool = &hwfBmPool[short_pool];
 		if (pBmPool->pVirt == NULL) {
 			/* Allocate new pool */
 			pBmPool->pVirt = mv_eth_bm_pool_create(short_pool, MV_BM_POOL_CAP_MAX, &pBmPool->physAddr);
 			if (pBmPool->pVirt == NULL) {
 				mvOsPrintf("%s: Can't allocate %d bytes for Short pool #%d of port #%d\n",
 						__func__, MV_BM_POOL_CAP_MAX * sizeof(MV_U32), short_pool, port);
 				return MV_OUT_OF_CPU_MEM;
 			}
 			pBmPool->pool = short_pool;
 			pBmPool->capacity = MV_BM_POOL_CAP_MAX;
 			pBmPool->bufSize = short_buf_size;
 		} else {
 			/* Share pool with other port - check buffer size */
 			if (short_buf_size > pBmPool->bufSize) {
 				/* The BM pool doesn't match the mtuPktSize */
 				mvOsPrintf("%s: shortBufSize=%d is too match for the pool #%d (%d bytes)\n",
 							__func__, short_buf_size, pBmPool->pool, pBmPool->bufSize);
 				return MV_FAIL;
 			}
 		}
 		/* Set short pool buffer size */
 		mvNetaBmPoolBufSizeSet(port, short_pool, short_buf_size);

 		/* Add buffers to short pool */
 		mv_eth_hwf_pool_add(pBmPool, mv_eth_bm_config_short_buf_num_get(port));
 	}
 	mvNetaHwfBmPoolsSet(port, short_pool, long_pool);
 	return MV_OK;
 }

 void mv_hwf_bm_dump(void)
 {
 	int          i;
 	MV_BM_POOL   *bmPool;

 	mvOsPrintf("HWF BM Pools configuration\n");
 	mvOsPrintf("pool:    capacity    bufSize    bufNum      virtPtr       physAddr\n");
 	for (i = 0; i < MV_BM_POOLS; i++) {
 		bmPool = &hwfBmPool[i];
 		if (bmPool->pVirt)
 			mvOsPrintf("  %2d:     %4d       %4d       %4d      %p      0x%08x\n",
 						bmPool->pool, bmPool->capacity, bmPool->bufSize, bmPool->bufNum,
 						bmPool->pVirt, (unsigned)bmPool->physAddr);
 	}
 }
	/*******************************************************************************
	Copyright (C) Marvell International Ltd. and its affiliates

	This software file (the "File") is owned and distributed by Marvell
	International Ltd. and/or its affiliates ("Marvell") under the following
	alternative licensing terms. Once you have made an election to distribute the
	File under one of the following license alternatives, please (i) delete this
	introductory statement regarding license alternatives, (ii) delete the two
	license alternatives that you have not elected to use and (iii) preserve the
	Marvell copyright notice above.


	********************************************************************************
	Marvell GPL License Option

	If you received this File from Marvell, you may opt to use, redistribute and/or
	modify this File in accordance with the terms and conditions of the General
	Public License Version 2, June 1991 (the "GPL License"), a copy of which is
	available along with the File in the license.txt file or by writing to the Free
	Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 or
	on the worldwide web at http://www.gnu.org/licenses/gpl.txt.

	THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE IMPLIED
	WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY
	DISCLAIMED. The GPL License provides additional details about this warranty
	disclaimer.
	*******************************************************************************/
	#include <linux/module.h>
	#include <linux/kernel.h>
	#include <linux/types.h>
	#include <linux/capability.h>
	#include <linux/kernel.h>
	#include <linux/platform_device.h>

	#include "gbe/mvNeta.h"
	#include "bm/mvBm.h"

	#include "net_dev/mv_netdev.h"

	static MV_BM_POOL hwfBmPool[MV_BM_POOLS];


	static int mv_eth_hwf_pool_add(MV_BM_POOL *pBmPool, int bufNum)
	{
	int i;
	void *pVirt;
	MV_ULONG physAddr;

	/* Check total number of buffers doesn't exceed capacity */
	if ((bufNum < 0) \|\|
	((bufNum + pBmPool->bufNum) > (pBmPool->capacity))) {

	mvOsPrintf("%s: to many %d buffers for BM pool #%d: capacity=%d, buf_num=%d\n",
	__func__, bufNum, pBmPool->pool, pBmPool->capacity, pBmPool->bufNum);
	return 0;
	}
	/* Allocate buffers for the pool */
	for (i = 0; i < bufNum; i++) {

	pVirt = mvOsIoCachedMalloc(NULL, pBmPool->bufSize, &physAddr, NULL);
	if (pVirt == NULL) {
	mvOsPrintf("%s: Warning! Not all buffers of %d bytes allocated\n",
	__func__, pBmPool->bufSize);
	break;
	}
	mvBmPoolPut(pBmPool->pool, (MV_ULONG) physAddr);
	}
	pBmPool->bufNum += i;

	mvOsPrintf("BM pool #%d for HWF: bufSize=%4d - %4d of %4d buffers added\n",
	pBmPool->pool, pBmPool->bufSize, i, bufNum);

	return i;
	}

	/*******************************************************************************
	* mv_eth_hwf_bm_create - create BM pools used by the port for HWF only
	*
	* INPUT:
	* int port - port number
	*
	* RETURN: MV_STATUS
	* MV_OK - Success, Others - Failure
	*
	*******************************************************************************/
	MV_STATUS mv_eth_hwf_bm_create(int port, int mtuPktSize)
	{
	static bool isFirst = true;
	MV_BM_POOL *pBmPool;
	int long_pool, short_pool;
	int long_buf_size, short_buf_size;

	/* Check validity of the parameters */
	if (mvNetaPortCheck(port))
	return MV_FAIL;

	/* For the first time - clean hwfBmPool array */
	if (isFirst == true) {
	memset(&hwfBmPool, 0, sizeof(hwfBmPool));
	isFirst = false;
	}

	long_pool = mv_eth_bm_config_long_pool_get(port);
	/* Check validity of the parameters */
	if (mvNetaMaxCheck(long_pool, MV_BM_POOLS))
	return MV_FAIL;

	/* For HWF Packet offset in the packet is 8 bytes */
	long_buf_size = mv_eth_bm_config_pkt_size_get(long_pool);
	if (long_buf_size == 0)
	long_buf_size = mtuPktSize + 8;

	/* Check validity of the parameters */
	if (long_buf_size < (mtuPktSize + 8))
	return MV_FAIL;

	/* Create long pool */
	pBmPool = &hwfBmPool[long_pool];
	if (pBmPool->pVirt == NULL) {
	/* Allocate new pool */
	pBmPool->pVirt = mv_eth_bm_pool_create(long_pool, MV_BM_POOL_CAP_MAX, &pBmPool->physAddr);
	if (pBmPool->pVirt == NULL) {
	mvOsPrintf("%s: Can't allocate %d bytes for Long pool #%d of port #%d\n",
	__func__, MV_BM_POOL_CAP_MAX * sizeof(MV_U32), long_pool, port);
	return MV_OUT_OF_CPU_MEM;
	}
	pBmPool->pool = long_pool;
	pBmPool->capacity = MV_BM_POOL_CAP_MAX;
	pBmPool->bufSize = long_buf_size;
	} else {
	/* Share pool with other port - check buffer size */
	if (long_buf_size > pBmPool->bufSize) {
	/* The BM pool doesn't match the mtuPktSize */
	mvOsPrintf("%s: longBufSize=%d is too match for the pool #%d (%d bytes)\n",
	__func__, long_buf_size, pBmPool->pool, pBmPool->bufSize);
	return MV_FAIL;
	}
	}
	/* Set long pool buffer size */
	mvNetaBmPoolBufSizeSet(port, long_pool, long_buf_size);

	mv_eth_hwf_pool_add(pBmPool, mv_eth_bm_config_long_buf_num_get(port));

	/* Create short pool */
	short_pool = mv_eth_bm_config_short_pool_get(port);
	short_buf_size = mv_eth_bm_config_pkt_size_get(short_pool);
	if (short_pool != long_pool) {
	pBmPool = &hwfBmPool[short_pool];
	if (pBmPool->pVirt == NULL) {
	/* Allocate new pool */
	pBmPool->pVirt = mv_eth_bm_pool_create(short_pool, MV_BM_POOL_CAP_MAX, &pBmPool->physAddr);
	if (pBmPool->pVirt == NULL) {
	mvOsPrintf("%s: Can't allocate %d bytes for Short pool #%d of port #%d\n",
	__func__, MV_BM_POOL_CAP_MAX * sizeof(MV_U32), short_pool, port);
	return MV_OUT_OF_CPU_MEM;
	}
	pBmPool->pool = short_pool;
	pBmPool->capacity = MV_BM_POOL_CAP_MAX;
	pBmPool->bufSize = short_buf_size;
	} else {
	/* Share pool with other port - check buffer size */
	if (short_buf_size > pBmPool->bufSize) {
	/* The BM pool doesn't match the mtuPktSize */
	mvOsPrintf("%s: shortBufSize=%d is too match for the pool #%d (%d bytes)\n",
	__func__, short_buf_size, pBmPool->pool, pBmPool->bufSize);
	return MV_FAIL;
	}
	}
	/* Set short pool buffer size */
	mvNetaBmPoolBufSizeSet(port, short_pool, short_buf_size);

	/* Add buffers to short pool */
	mv_eth_hwf_pool_add(pBmPool, mv_eth_bm_config_short_buf_num_get(port));
	}
	mvNetaHwfBmPoolsSet(port, short_pool, long_pool);
	return MV_OK;
	}

	void mv_hwf_bm_dump(void)
	{
	int i;
	MV_BM_POOL *bmPool;

	mvOsPrintf("HWF BM Pools configuration\n");
	mvOsPrintf("pool: capacity bufSize bufNum virtPtr physAddr\n");
	for (i = 0; i < MV_BM_POOLS; i++) {
	bmPool = &hwfBmPool[i];
	if (bmPool->pVirt)
	mvOsPrintf(" %2d: %4d %4d %4d %p 0x%08x\n",
	bmPool->pool, bmPool->capacity, bmPool->bufSize, bmPool->bufNum,
	bmPool->pVirt, (unsigned)bmPool->physAddr);
	}
	}