diff options
Diffstat (limited to 'sys/contrib/octeon-sdk/cvmx-zone.c')
| -rw-r--r-- | sys/contrib/octeon-sdk/cvmx-zone.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/sys/contrib/octeon-sdk/cvmx-zone.c b/sys/contrib/octeon-sdk/cvmx-zone.c new file mode 100644 index 0000000..aa65bbc --- /dev/null +++ b/sys/contrib/octeon-sdk/cvmx-zone.c @@ -0,0 +1,173 @@ +/***********************license start*************** + * Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights + * reserved. + * + * + * 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. + + * * Neither the name of Cavium Inc. nor the names of + * its contributors may be used to endorse or promote products + * derived from this software without specific prior written + * permission. + + * This 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. + + * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" + * AND WITH ALL FAULTS AND CAVIUM INC. 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. + ***********************license end**************************************/ + + + + + + + +/** + * @file + * + * Support library for the Zone Allocator. + * + * <hr>$Revision: 70030 $<hr> + */ + + +#include "cvmx-config.h" +#include "cvmx.h" +#include "cvmx-spinlock.h" +#include "cvmx-malloc.h" + + + + +#ifndef CVMX_BUILD_FOR_LINUX_USER +cvmx_zone_t cvmx_zone_create_from_addr(char *name, uint32_t elem_size, uint32_t num_elem, + void* mem_ptr, uint64_t mem_size, uint32_t flags) +{ + cvmx_zone_t zone; + unsigned int i; + + if ((unsigned long)mem_ptr & (sizeof(void *) -1)) + { + return(NULL); //invalid alignment + } + if (mem_size < sizeof(struct cvmx_zone) + elem_size * num_elem) + { + return(NULL); // not enough room + } + + zone = (cvmx_zone_t) ((char *)mem_ptr + elem_size * num_elem); + zone->elem_size = elem_size; + zone->num_elem = num_elem; + zone->name = name; + zone->align = 0; // not used + zone->baseptr = NULL; + zone->freelist = NULL; + zone->lock.value = CVMX_SPINLOCK_UNLOCKED_VAL; + + zone->baseptr = (char *)mem_ptr; + + for(i=0;i<num_elem;i++) + { + *(void **)(zone->baseptr + (i*elem_size)) = zone->freelist; + zone->freelist = (void *)(zone->baseptr + (i*elem_size)); + } + + return(zone); + +} + +cvmx_zone_t cvmx_zone_create_from_arena(char *name, uint32_t elem_size, uint32_t num_elem, uint32_t align, cvmx_arena_list_t arena_list, uint32_t flags) +{ + unsigned int i; + cvmx_zone_t zone; + + zone = (cvmx_zone_t)cvmx_malloc(arena_list, sizeof(struct cvmx_zone)); + + if (NULL == zone) + { + return(NULL); + } + zone->elem_size = elem_size; + zone->num_elem = num_elem; + zone->name = name; + zone->align = align; + zone->baseptr = NULL; + zone->freelist = NULL; + zone->lock.value = CVMX_SPINLOCK_UNLOCKED_VAL; + + zone->baseptr = (char *)cvmx_memalign(arena_list, align, num_elem * elem_size); + if (NULL == zone->baseptr) + { + return(NULL); + } + + for(i=0;i<num_elem;i++) + { + *(void **)(zone->baseptr + (i*elem_size)) = zone->freelist; + zone->freelist = (void *)(zone->baseptr + (i*elem_size)); + } + + return(zone); + +} +#endif + + + +void * cvmx_zone_alloc(cvmx_zone_t zone, uint32_t flags) +{ + cvmx_zone_t item; + + assert(zone != NULL); + assert(zone->baseptr != NULL); + cvmx_spinlock_lock(&zone->lock); + + item = (cvmx_zone_t)zone->freelist; + if(item != NULL) + { + zone->freelist = *(void **)item; + } + else + { +// cvmx_dprintf("No more elements in zone %s\n", zone->name); + } + + cvmx_spinlock_unlock(&zone->lock); + return(item); +} + +void cvmx_zone_free(cvmx_zone_t zone, void *ptr) +{ + + assert(zone != NULL); + assert(zone->baseptr != NULL); + assert((unsigned long)ptr - (unsigned long)zone->baseptr < zone->num_elem * zone->elem_size); + + cvmx_spinlock_lock(&zone->lock); + *(void **)ptr = zone->freelist; + zone->freelist = ptr; + cvmx_spinlock_unlock(&zone->lock); +} + + |
