diff options
Diffstat (limited to 'drivers/firewire/fw-iso.c')
| -rw-r--r-- | drivers/firewire/fw-iso.c | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/drivers/firewire/fw-iso.c b/drivers/firewire/fw-iso.c deleted file mode 100644 index 2b640e9be6d..00000000000 --- a/drivers/firewire/fw-iso.c +++ /dev/null @@ -1,163 +0,0 @@ -/* - * Isochronous IO functionality - * - * Copyright (C) 2006 Kristian Hoegsberg <krh@bitplanet.net> - * - * This program 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 2 of the License, or - * (at your option) any later version. - * - * This program 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 this program; if not, write to the Free Software Foundation, - * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/dma-mapping.h> -#include <linux/vmalloc.h> -#include <linux/mm.h> - -#include "fw-transaction.h" -#include "fw-topology.h" -#include "fw-device.h" - -int -fw_iso_buffer_init(struct fw_iso_buffer *buffer, struct fw_card *card, - int page_count, enum dma_data_direction direction) -{ - int i, j, retval = -ENOMEM; - dma_addr_t address; - - buffer->page_count = page_count; - buffer->direction = direction; - - buffer->pages = kmalloc(page_count * sizeof(buffer->pages[0]), - GFP_KERNEL); - if (buffer->pages == NULL) - goto out; - - for (i = 0; i < buffer->page_count; i++) { - buffer->pages[i] = alloc_page(GFP_KERNEL | GFP_DMA32 | __GFP_ZERO); - if (buffer->pages[i] == NULL) - goto out_pages; - - address = dma_map_page(card->device, buffer->pages[i], - 0, PAGE_SIZE, direction); - if (dma_mapping_error(address)) { - __free_page(buffer->pages[i]); - goto out_pages; - } - set_page_private(buffer->pages[i], address); - } - - return 0; - - out_pages: - for (j = 0; j < i; j++) { - address = page_private(buffer->pages[j]); - dma_unmap_page(card->device, address, - PAGE_SIZE, DMA_TO_DEVICE); - __free_page(buffer->pages[j]); - } - kfree(buffer->pages); - out: - buffer->pages = NULL; - return retval; -} - -int fw_iso_buffer_map(struct fw_iso_buffer *buffer, struct vm_area_struct *vma) -{ - unsigned long uaddr; - int i, retval; - - uaddr = vma->vm_start; - for (i = 0; i < buffer->page_count; i++) { - retval = vm_insert_page(vma, uaddr, buffer->pages[i]); - if (retval) - return retval; - uaddr += PAGE_SIZE; - } - - return 0; -} - -void fw_iso_buffer_destroy(struct fw_iso_buffer *buffer, - struct fw_card *card) -{ - int i; - dma_addr_t address; - - for (i = 0; i < buffer->page_count; i++) { - address = page_private(buffer->pages[i]); - dma_unmap_page(card->device, address, - PAGE_SIZE, DMA_TO_DEVICE); - __free_page(buffer->pages[i]); - } - - kfree(buffer->pages); - buffer->pages = NULL; -} - -struct fw_iso_context * -fw_iso_context_create(struct fw_card *card, int type, - int channel, int speed, size_t header_size, - fw_iso_callback_t callback, void *callback_data) -{ - struct fw_iso_context *ctx; - - ctx = card->driver->allocate_iso_context(card, type, header_size); - if (IS_ERR(ctx)) - return ctx; - - ctx->card = card; - ctx->type = type; - ctx->channel = channel; - ctx->speed = speed; - ctx->header_size = header_size; - ctx->callback = callback; - ctx->callback_data = callback_data; - - return ctx; -} -EXPORT_SYMBOL(fw_iso_context_create); - -void fw_iso_context_destroy(struct fw_iso_context *ctx) -{ - struct fw_card *card = ctx->card; - - card->driver->free_iso_context(ctx); -} -EXPORT_SYMBOL(fw_iso_context_destroy); - -int -fw_iso_context_start(struct fw_iso_context *ctx, int cycle, int sync, int tags) -{ - return ctx->card->driver->start_iso(ctx, cycle, sync, tags); -} -EXPORT_SYMBOL(fw_iso_context_start); - -int -fw_iso_context_queue(struct fw_iso_context *ctx, - struct fw_iso_packet *packet, - struct fw_iso_buffer *buffer, - unsigned long payload) -{ - struct fw_card *card = ctx->card; - - return card->driver->queue_iso(ctx, packet, buffer, payload); -} -EXPORT_SYMBOL(fw_iso_context_queue); - -int -fw_iso_context_stop(struct fw_iso_context *ctx) -{ - return ctx->card->driver->stop_iso(ctx); -} -EXPORT_SYMBOL(fw_iso_context_stop); |