diff options
Diffstat (limited to 'arch/m68k/mach-mcfv4e/net/nbuf.c')
| -rw-r--r-- | arch/m68k/mach-mcfv4e/net/nbuf.c | 239 |
1 files changed, 0 insertions, 239 deletions
diff --git a/arch/m68k/mach-mcfv4e/net/nbuf.c b/arch/m68k/mach-mcfv4e/net/nbuf.c deleted file mode 100644 index 234e75821a..0000000000 --- a/arch/m68k/mach-mcfv4e/net/nbuf.c +++ /dev/null @@ -1,239 +0,0 @@ -/* - * Copyright (c) 2008 Carsten Schlote <c.schlote@konzeptpark.de> - * See file CREDITS for list of people who contributed to this project. - * - * This file is part of barebox. - * - * barebox is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * barebox is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with barebox. If not, see <http://www.gnu.org/licenses/>. - */ - -/** @file - * Implementation of network buffer scheme. - * @todo Obsolete this file - */ -#include <common.h> -#include <malloc.h> -#include <linux/types.h> - -#include <proc/net/queue.h> -#include <proc/net/net.h> - -#include <mach/mcf54xx-regs.h> - - -#define ASSERT(x) - -/** - * Queues used for network buffer storage - */ -QUEUE nbuf_queue[NBUF_MAXQ]; - -/* - * Some devices require line-aligned buffers. In order to accomplish - * this, the nbuf data is over-allocated and adjusted. The following - * array keeps track of the original data pointer returned by malloc - */ -ADDRESS unaligned_buffers[NBUF_MAX]; - -/** - * Initialize all the network buffer queues - * - * Return Value: - * 0 success - * 1 failure - */ -int -nbuf_init(void) -{ - int i; - NBUF *nbuf; - - for (i=0; i<NBUF_MAXQ; ++i) - { - /* Initialize all the queues */ - queue_init(&nbuf_queue[i]); - } - - #ifdef CONFIG_DRIVER_NET_MCF54XX_DEBUG - printf("Creating %d net buffers of %d bytes\n",NBUF_MAX,NBUF_SZ); - #endif - - for (i=0; i<NBUF_MAX; ++i) - { - /* Allocate memory for the network buffer structure */ - nbuf = (NBUF *)malloc(sizeof(NBUF)); - if (!nbuf) - { - ASSERT(nbuf); - return 1; - } - - /* Allocate memory for the actual data */ - unaligned_buffers[i] = (ADDRESS)malloc(NBUF_SZ + 16); - nbuf->data = (uint8_t *)((uint32_t)(unaligned_buffers[i] + 15) & 0xFFFFFFF0); - if (!nbuf->data) - { - ASSERT(nbuf->data); - return 1; - } - - /* Initialize the network buffer */ - nbuf->offset = 0; - nbuf->length = 0; - - /* Add the network buffer to the free list */ - queue_add(&nbuf_queue[NBUF_FREE], (QNODE *)nbuf); - } - - #ifdef CONFIG_DRIVER_NET_MCF54XX_DEBUG - printf("NBUF allocation complete\n"); - nbuf_debug_dump(); - #endif - - return 0; -} -/** - * Return all the allocated memory to the heap - */ -void -nbuf_flush(void) -{ - NBUF *nbuf; - int i, level = asm_set_ipl(7); - int n = 0; - - for (i=0; i<NBUF_MAX; ++i) - free((uint8_t*)unaligned_buffers[i]); - - for (i=0; i<NBUF_MAXQ; ++i) - { - while ((nbuf = (NBUF *)queue_remove(&nbuf_queue[i])) != NULL) - { - free(nbuf); - ++n; - } - } - ASSERT(n == NBUF_MAX); - asm_set_ipl(level); -} -/** - * Allocate a network buffer from the free list - * - * Return Value: - * Pointer to a free network buffer - * NULL if none are available - */ -NBUF * -nbuf_alloc(void) -{ - NBUF *nbuf; - int level = asm_set_ipl(7); - - nbuf = (NBUF *)queue_remove(&nbuf_queue[NBUF_FREE]); - asm_set_ipl(level); - return nbuf; -} -/** - * Add the specified network buffer back to the free list - * - * Parameters: - * nbuf Buffer to add back to the free list - */ -void -nbuf_free(NBUF *nbuf) -{ - int level = asm_set_ipl(7); - - nbuf->offset = 0; - nbuf->length = NBUF_SZ; - queue_add(&nbuf_queue[NBUF_FREE],(QNODE *)nbuf); - - asm_set_ipl(level); -} -/** - * Remove a network buffer from the specified queue - * - * Parameters: - * q The index that identifies the queue to pull the buffer from - */ -NBUF * -nbuf_remove(int q) -{ - NBUF *nbuf; - int level = asm_set_ipl(7); - - nbuf = (NBUF *)queue_remove(&nbuf_queue[q]); - asm_set_ipl(level); - return nbuf; -} -/** - * Add a network buffer to the specified queue - * - * Parameters: - * q The index that identifies the queue to add the buffer to - */ -void -nbuf_add(int q, NBUF *nbuf) -{ - int level = asm_set_ipl(7); - queue_add(&nbuf_queue[q],(QNODE *)nbuf); - asm_set_ipl(level); -} -/** - * Put all the network buffers back into the free list - */ -void -nbuf_reset(void) -{ - NBUF *nbuf; - int i, level = asm_set_ipl(7); - - for (i=1; i<NBUF_MAXQ; ++i) - { - while ((nbuf = nbuf_remove(i)) != NULL) - nbuf_free(nbuf); - } - asm_set_ipl(level); -} -/** - * Display all the nbuf queues - */ -void -nbuf_debug_dump(void) -{ -#ifdef CONFIG_DRIVER_NET_MCF54XX_DEBUG - NBUF *nbuf; - int i, j, level; - - level = asm_set_ipl(7); - - for (i=0; i<NBUF_MAXQ; ++i) - { - printf("\n\nQueue #%d\n\n",i); - printf("\tBuffer Location\tOffset\tLength\n"); - printf("--------------------------------------\n"); - j = 0; - nbuf = (NBUF *)queue_peek(&nbuf_queue[i]); - while (nbuf != NULL) - { - printf("%d\t 0x%08x\t0x%04x\t0x%04x\n",j++,nbuf->data, - nbuf->offset, - nbuf->length); - nbuf = (NBUF *)nbuf->node.next; - } - } - - asm_set_ipl(level); -#endif -} |