diff options
| author | Magnus Damm <magnus.damm@gmail.com> | 2008-01-24 18:40:50 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2008-01-28 13:19:04 +0900 |
| commit | a724605cb7a66d423a494a395f9a8ba871b8a1eb (patch) | |
| tree | 4f6345db7b6fb3001782c688c6fd1f07ae9be1b6 /arch/sh/drivers/pci/dma-dreamcast.c | |
| parent | f93e97eaead5c50af35d73cca7301ebbfdff116c (diff) | |
sh: use declared coherent memory for dreamcast pci ethernet adapter
This patch makes the dreamcast use the recently added declared coherent
memory functions to point out the memory window suitable for dma.
Apart from cleaning up, this gives the dreamcast a proper memory allocator
for pci dma memory.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/drivers/pci/dma-dreamcast.c')
| -rw-r--r-- | arch/sh/drivers/pci/dma-dreamcast.c | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/arch/sh/drivers/pci/dma-dreamcast.c b/arch/sh/drivers/pci/dma-dreamcast.c deleted file mode 100644 index 888a34050599..000000000000 --- a/arch/sh/drivers/pci/dma-dreamcast.c +++ /dev/null @@ -1,70 +0,0 @@ -/* - * 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 */ - __flush_purge_region((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; -} - |