Revision ce4796d1e16cf3761dc2a02b8d588667d05b3078 authored by Linus Torvalds on 07 March 2008, 03:32:33 UTC, committed by Linus Torvalds on 07 March 2008, 03:32:33 UTC
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.25: sh: Fix up the sh64 build. sh: Fix up SH7710 VoIP-GW build. sh: Flag PMB support as EXPERIMENTAL. sh: Update r7780mp defconfig. fb: hitfb: Balance probe/remove section annotations. sh: hp6xx: Fix up hp6xx_apm build failure. fb: pvr2fb: Fix up remaining section mismatch. sh: Fix up section mismatches. sh: hp6xx: Correct APM output. sh: update se7780 defconfig sh: replace remaining __FUNCTION__ occurrences sh: export copy-page() to modules sh_ksyms_32.c update for gcc 4.3 sh/mm/pg-sh7705.c must #include <linux/fs.h>
ioatdma.h
/*
* Copyright(c) 2004 - 2007 Intel Corporation. All rights reserved.
*
* 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.
*
* The full GNU General Public License is included in this distribution in the
* file called COPYING.
*/
#ifndef IOATDMA_H
#define IOATDMA_H
#include <linux/dmaengine.h>
#include "ioatdma_hw.h"
#include <linux/init.h>
#include <linux/dmapool.h>
#include <linux/cache.h>
#include <linux/pci_ids.h>
#define IOAT_DMA_VERSION "2.04"
enum ioat_interrupt {
none = 0,
msix_multi_vector = 1,
msix_single_vector = 2,
msi = 3,
intx = 4,
};
#define IOAT_LOW_COMPLETION_MASK 0xffffffc0
#define IOAT_DMA_DCA_ANY_CPU ~0
/**
* struct ioatdma_device - internal representation of a IOAT device
* @pdev: PCI-Express device
* @reg_base: MMIO register space base address
* @dma_pool: for allocating DMA descriptors
* @common: embedded struct dma_device
* @version: version of ioatdma device
* @irq_mode: which style irq to use
* @msix_entries: irq handlers
* @idx: per channel data
*/
struct ioatdma_device {
struct pci_dev *pdev;
void __iomem *reg_base;
struct pci_pool *dma_pool;
struct pci_pool *completion_pool;
struct dma_device common;
u8 version;
enum ioat_interrupt irq_mode;
struct msix_entry msix_entries[4];
struct ioat_dma_chan *idx[4];
};
/**
* struct ioat_dma_chan - internal representation of a DMA channel
*/
struct ioat_dma_chan {
void __iomem *reg_base;
dma_cookie_t completed_cookie;
unsigned long last_completion;
size_t xfercap; /* XFERCAP register value expanded out */
spinlock_t cleanup_lock;
spinlock_t desc_lock;
struct list_head free_desc;
struct list_head used_desc;
int pending;
int dmacount;
int desccount;
struct ioatdma_device *device;
struct dma_chan common;
dma_addr_t completion_addr;
union {
u64 full; /* HW completion writeback */
struct {
u32 low;
u32 high;
};
} *completion_virt;
struct tasklet_struct cleanup_task;
};
/* wrapper around hardware descriptor format + additional software fields */
/**
* struct ioat_desc_sw - wrapper around hardware descriptor
* @hw: hardware DMA descriptor
* @node: this descriptor will either be on the free list,
* or attached to a transaction list (async_tx.tx_list)
* @tx_cnt: number of descriptors required to complete the transaction
* @async_tx: the generic software descriptor for all engines
*/
struct ioat_desc_sw {
struct ioat_dma_descriptor *hw;
struct list_head node;
int tx_cnt;
size_t len;
dma_addr_t src;
dma_addr_t dst;
struct dma_async_tx_descriptor async_tx;
};
#if defined(CONFIG_INTEL_IOATDMA) || defined(CONFIG_INTEL_IOATDMA_MODULE)
struct ioatdma_device *ioat_dma_probe(struct pci_dev *pdev,
void __iomem *iobase);
void ioat_dma_remove(struct ioatdma_device *device);
struct dca_provider *ioat_dca_init(struct pci_dev *pdev, void __iomem *iobase);
struct dca_provider *ioat2_dca_init(struct pci_dev *pdev, void __iomem *iobase);
#else
#define ioat_dma_probe(pdev, iobase) NULL
#define ioat_dma_remove(device) do { } while (0)
#define ioat_dca_init(pdev, iobase) NULL
#define ioat2_dca_init(pdev, iobase) NULL
#endif
#endif /* IOATDMA_H */
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