1/************************************************************************* 2Copyright (c) 2003-2007 Cavium Networks (support@cavium.com). All rights 3reserved. 4 5 6Redistribution and use in source and binary forms, with or without 7modification, are permitted provided that the following conditions are 8met: 9 10 * Redistributions of source code must retain the above copyright 11 notice, this list of conditions and the following disclaimer. 12 13 * Redistributions in binary form must reproduce the above 14 copyright notice, this list of conditions and the following 15 disclaimer in the documentation and/or other materials provided 16 with the distribution. 17 18 * Neither the name of Cavium Networks nor the names of 19 its contributors may be used to endorse or promote products 20 derived from this software without specific prior written 21 permission. 22 23This Software, including technical data, may be subject to U.S. export control laws, including the U.S. Export Administration Act and its associated regulations, and may be subject to export or import regulations in other countries. 24 25TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" 26AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU. 27 28*************************************************************************/ 29 30#include <sys/cdefs.h> 31__FBSDID("$FreeBSD$"); 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/bus.h> 36#include <sys/endian.h> 37#include <sys/kernel.h> 38#include <sys/mbuf.h> 39#include <sys/socket.h> 40 41#include <net/ethernet.h> 42#include <net/if.h> 43#include <net/if_var.h> 44 45#include "wrapper-cvmx-includes.h" 46#include "ethernet-headers.h" 47 48/** 49 * Fill the supplied hardware pool with mbufs 50 * 51 * @param pool Pool to allocate an mbuf for 52 * @param size Size of the buffer needed for the pool 53 * @param elements Number of buffers to allocate 54 */ 55int cvm_oct_mem_fill_fpa(int pool, int size, int elements) 56{ 57 int freed = elements; 58 while (freed) { 59 KASSERT(size <= MCLBYTES - 128, ("mbuf clusters are too small")); 60 61 struct mbuf *m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 62 if (__predict_false(m == NULL)) { 63 printf("Failed to allocate mbuf for hardware pool %d\n", pool); 64 break; 65 } 66 67 m->m_data += 128 - (((uintptr_t)m->m_data) & 0x7f); 68 *(struct mbuf **)(m->m_data - sizeof(void *)) = m; 69 cvmx_fpa_free(m->m_data, pool, DONT_WRITEBACK(size/128)); 70 freed--; 71 } 72 return (elements - freed); 73} 74 75 76/** 77 * Free the supplied hardware pool of mbufs 78 * 79 * @param pool Pool to allocate an mbuf for 80 * @param size Size of the buffer needed for the pool 81 * @param elements Number of buffers to allocate 82 */ 83void cvm_oct_mem_empty_fpa(int pool, int size, int elements) 84{ 85 char *memory; 86 87 do { 88 memory = cvmx_fpa_alloc(pool); 89 if (memory) { 90 struct mbuf *m = *(struct mbuf **)(memory - sizeof(void *)); 91 elements--; 92 m_freem(m); 93 } 94 } while (memory); 95 96 if (elements < 0) 97 printf("Warning: Freeing of pool %u had too many mbufs (%d)\n", pool, elements); 98 else if (elements > 0) 99 printf("Warning: Freeing of pool %u is missing %d mbufs\n", pool, elements); 100} 101