f30c226954
Many files include the filename at the beginning, serveral used a wrong one. Signed-off-by: Uwe Zeisberger <Uwe_Zeisberger@digi.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
/*
|
|
* arch/sh/drivers/pci/dma-dreamcast.c
|
|
*
|
|
* PCI DMA support for the Sega Dreamcast
|
|
*
|
|
* Copyright (C) 2001, 2002 M. R. Brown
|
|
* Copyright (C) 2002, 2003 Paul Mundt
|
|
*
|
|
* This file originally bore the message (with enclosed-$):
|
|
* Id: pci.c,v 1.3 2003/05/04 19:29:46 lethal Exp
|
|
* Dreamcast PCI: Supports SEGA Broadband Adaptor only.
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
|
|
#include <linux/sched.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/param.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/init.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/device.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/mach/pci.h>
|
|
|
|
static int gapspci_dma_used = 0;
|
|
|
|
void *dreamcast_consistent_alloc(struct device *dev, size_t size,
|
|
dma_addr_t *dma_handle, gfp_t flag)
|
|
{
|
|
unsigned long buf;
|
|
|
|
if (dev && dev->bus != &pci_bus_type)
|
|
return NULL;
|
|
|
|
if (gapspci_dma_used + size > GAPSPCI_DMA_SIZE)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
buf = GAPSPCI_DMA_BASE + gapspci_dma_used;
|
|
|
|
gapspci_dma_used = PAGE_ALIGN(gapspci_dma_used+size);
|
|
|
|
*dma_handle = (dma_addr_t)buf;
|
|
|
|
buf = P2SEGADDR(buf);
|
|
|
|
/* Flush the dcache before we hand off the buffer */
|
|
dma_cache_wback_inv((void *)buf, size);
|
|
|
|
return (void *)buf;
|
|
}
|
|
|
|
int dreamcast_consistent_free(struct device *dev, size_t size,
|
|
void *vaddr, dma_addr_t dma_handle)
|
|
{
|
|
if (dev && dev->bus != &pci_bus_type)
|
|
return -EINVAL;
|
|
|
|
/* XXX */
|
|
gapspci_dma_used = 0;
|
|
|
|
return 0;
|
|
}
|
|
|