提交 b1c3c3eb 编写于 作者: L Linus Torvalds

Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx:
  ioat: fix 'ack' handling, driver must ensure that 'ack' is zero
  dmaengine: fix sparse warning
  fsldma: do not cleanup descriptors in hardirq context
  dmaengine: add driver for Freescale MPC85xx DMA controller
......@@ -1589,6 +1589,13 @@ L: linux-fbdev-devel@lists.sourceforge.net (moderated for non-subscribers)
W: http://linux-fbdev.sourceforge.net/
S: Maintained
FREESCALE DMA DRIVER
P; Zhang Wei
M: wei.zhang@freescale.com
L: linuxppc-embedded@ozlabs.org
L: linux-kernel@vger.kernel.org
S: Maintained
FREESCALE SOC FS_ENET DRIVER
P: Pantelis Antoniou
M: pantelis.antoniou@gmail.com
......
......@@ -4,7 +4,7 @@
menuconfig DMADEVICES
bool "DMA Engine support"
depends on (PCI && X86) || ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX
depends on (PCI && X86) || ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX || PPC
depends on !HIGHMEM64G
help
DMA engines can do asynchronous data transfers without
......@@ -37,6 +37,23 @@ config INTEL_IOP_ADMA
help
Enable support for the Intel(R) IOP Series RAID engines.
config FSL_DMA
bool "Freescale MPC85xx/MPC83xx DMA support"
depends on PPC
select DMA_ENGINE
---help---
Enable support for the Freescale DMA engine. Now, it support
MPC8560/40, MPC8555, MPC8548 and MPC8641 processors.
The MPC8349, MPC8360 is also supported.
config FSL_DMA_SELFTEST
bool "Enable the self test for each DMA channel"
depends on FSL_DMA
default y
---help---
Enable the self test for each DMA channel. A self test will be
performed after the channel probed to ensure the DMA works well.
config DMA_ENGINE
bool
......
......@@ -3,3 +3,4 @@ obj-$(CONFIG_NET_DMA) += iovlock.o
obj-$(CONFIG_INTEL_IOATDMA) += ioatdma.o
ioatdma-objs := ioat.o ioat_dma.o ioat_dca.o
obj-$(CONFIG_INTEL_IOP_ADMA) += iop-adma.o
obj-$(CONFIG_FSL_DMA) += fsldma.o
此差异已折叠。
/*
* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
*
* Author:
* Zhang Wei <wei.zhang@freescale.com>, Jul 2007
* Ebony Zhu <ebony.zhu@freescale.com>, May 2007
*
* This 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.
*
*/
#ifndef __DMA_FSLDMA_H
#define __DMA_FSLDMA_H
#include <linux/device.h>
#include <linux/dmapool.h>
#include <linux/dmaengine.h>
/* Define data structures needed by Freescale
* MPC8540 and MPC8349 DMA controller.
*/
#define FSL_DMA_MR_CS 0x00000001
#define FSL_DMA_MR_CC 0x00000002
#define FSL_DMA_MR_CA 0x00000008
#define FSL_DMA_MR_EIE 0x00000040
#define FSL_DMA_MR_XFE 0x00000020
#define FSL_DMA_MR_EOLNIE 0x00000100
#define FSL_DMA_MR_EOLSIE 0x00000080
#define FSL_DMA_MR_EOSIE 0x00000200
#define FSL_DMA_MR_CDSM 0x00000010
#define FSL_DMA_MR_CTM 0x00000004
#define FSL_DMA_MR_EMP_EN 0x00200000
#define FSL_DMA_MR_EMS_EN 0x00040000
#define FSL_DMA_MR_DAHE 0x00002000
#define FSL_DMA_MR_SAHE 0x00001000
/* Special MR definition for MPC8349 */
#define FSL_DMA_MR_EOTIE 0x00000080
#define FSL_DMA_SR_CH 0x00000020
#define FSL_DMA_SR_CB 0x00000004
#define FSL_DMA_SR_TE 0x00000080
#define FSL_DMA_SR_EOSI 0x00000002
#define FSL_DMA_SR_EOLSI 0x00000001
#define FSL_DMA_SR_EOCDI 0x00000001
#define FSL_DMA_SR_EOLNI 0x00000008
#define FSL_DMA_SATR_SBPATMU 0x20000000
#define FSL_DMA_SATR_STRANSINT_RIO 0x00c00000
#define FSL_DMA_SATR_SREADTYPE_SNOOP_READ 0x00050000
#define FSL_DMA_SATR_SREADTYPE_BP_IORH 0x00020000
#define FSL_DMA_SATR_SREADTYPE_BP_NREAD 0x00040000
#define FSL_DMA_SATR_SREADTYPE_BP_MREAD 0x00070000
#define FSL_DMA_DATR_DBPATMU 0x20000000
#define FSL_DMA_DATR_DTRANSINT_RIO 0x00c00000
#define FSL_DMA_DATR_DWRITETYPE_SNOOP_WRITE 0x00050000
#define FSL_DMA_DATR_DWRITETYPE_BP_FLUSH 0x00010000
#define FSL_DMA_EOL ((u64)0x1)
#define FSL_DMA_SNEN ((u64)0x10)
#define FSL_DMA_EOSIE 0x8
#define FSL_DMA_NLDA_MASK (~(u64)0x1f)
#define FSL_DMA_BCR_MAX_CNT 0x03ffffffu
#define FSL_DMA_DGSR_TE 0x80
#define FSL_DMA_DGSR_CH 0x20
#define FSL_DMA_DGSR_PE 0x10
#define FSL_DMA_DGSR_EOLNI 0x08
#define FSL_DMA_DGSR_CB 0x04
#define FSL_DMA_DGSR_EOSI 0x02
#define FSL_DMA_DGSR_EOLSI 0x01
struct fsl_dma_ld_hw {
u64 __bitwise src_addr;
u64 __bitwise dst_addr;
u64 __bitwise next_ln_addr;
u32 __bitwise count;
u32 __bitwise reserve;
} __attribute__((aligned(32)));
struct fsl_desc_sw {
struct fsl_dma_ld_hw hw;
struct list_head node;
struct dma_async_tx_descriptor async_tx;
struct list_head *ld;
void *priv;
} __attribute__((aligned(32)));
struct fsl_dma_chan_regs {
u32 __bitwise mr; /* 0x00 - Mode Register */
u32 __bitwise sr; /* 0x04 - Status Register */
u64 __bitwise cdar; /* 0x08 - Current descriptor address register */
u64 __bitwise sar; /* 0x10 - Source Address Register */
u64 __bitwise dar; /* 0x18 - Destination Address Register */
u32 __bitwise bcr; /* 0x20 - Byte Count Register */
u64 __bitwise ndar; /* 0x24 - Next Descriptor Address Register */
};
struct fsl_dma_chan;
#define FSL_DMA_MAX_CHANS_PER_DEVICE 4
struct fsl_dma_device {
void __iomem *reg_base; /* DGSR register base */
struct resource reg; /* Resource for register */
struct device *dev;
struct dma_device common;
struct fsl_dma_chan *chan[FSL_DMA_MAX_CHANS_PER_DEVICE];
u32 feature; /* The same as DMA channels */
};
/* Define macros for fsl_dma_chan->feature property */
#define FSL_DMA_LITTLE_ENDIAN 0x00000000
#define FSL_DMA_BIG_ENDIAN 0x00000001
#define FSL_DMA_IP_MASK 0x00000ff0
#define FSL_DMA_IP_85XX 0x00000010
#define FSL_DMA_IP_83XX 0x00000020
#define FSL_DMA_CHAN_PAUSE_EXT 0x00001000
#define FSL_DMA_CHAN_START_EXT 0x00002000
struct fsl_dma_chan {
struct fsl_dma_chan_regs __iomem *reg_base;
dma_cookie_t completed_cookie; /* The maximum cookie completed */
spinlock_t desc_lock; /* Descriptor operation lock */
struct list_head ld_queue; /* Link descriptors queue */
struct dma_chan common; /* DMA common channel */
struct dma_pool *desc_pool; /* Descriptors pool */
struct device *dev; /* Channel device */
struct resource reg; /* Resource for register */
int irq; /* Channel IRQ */
int id; /* Raw id of this channel */
struct tasklet_struct tasklet;
u32 feature;
void (*toggle_ext_pause)(struct fsl_dma_chan *fsl_chan, int size);
void (*toggle_ext_start)(struct fsl_dma_chan *fsl_chan, int enable);
void (*set_src_loop_size)(struct fsl_dma_chan *fsl_chan, int size);
void (*set_dest_loop_size)(struct fsl_dma_chan *fsl_chan, int size);
};
#define to_fsl_chan(chan) container_of(chan, struct fsl_dma_chan, common)
#define to_fsl_desc(lh) container_of(lh, struct fsl_desc_sw, node)
#define tx_to_fsl_desc(tx) container_of(tx, struct fsl_desc_sw, async_tx)
#ifndef __powerpc64__
static u64 in_be64(const u64 __iomem *addr)
{
return ((u64)in_be32((u32 *)addr) << 32) | (in_be32((u32 *)addr + 1));
}
static void out_be64(u64 __iomem *addr, u64 val)
{
out_be32((u32 *)addr, val >> 32);
out_be32((u32 *)addr + 1, (u32)val);
}
/* There is no asm instructions for 64 bits reverse loads and stores */
static u64 in_le64(const u64 __iomem *addr)
{
return ((u64)in_le32((u32 *)addr + 1) << 32) | (in_le32((u32 *)addr));
}
static void out_le64(u64 __iomem *addr, u64 val)
{
out_le32((u32 *)addr + 1, val >> 32);
out_le32((u32 *)addr, (u32)val);
}
#endif
#define DMA_IN(fsl_chan, addr, width) \
(((fsl_chan)->feature & FSL_DMA_BIG_ENDIAN) ? \
in_be##width(addr) : in_le##width(addr))
#define DMA_OUT(fsl_chan, addr, val, width) \
(((fsl_chan)->feature & FSL_DMA_BIG_ENDIAN) ? \
out_be##width(addr, val) : out_le##width(addr, val))
#define DMA_TO_CPU(fsl_chan, d, width) \
(((fsl_chan)->feature & FSL_DMA_BIG_ENDIAN) ? \
be##width##_to_cpu(d) : le##width##_to_cpu(d))
#define CPU_TO_DMA(fsl_chan, c, width) \
(((fsl_chan)->feature & FSL_DMA_BIG_ENDIAN) ? \
cpu_to_be##width(c) : cpu_to_le##width(c))
#endif /* __DMA_FSLDMA_H */
......@@ -714,6 +714,7 @@ static struct dma_async_tx_descriptor *ioat1_dma_prep_memcpy(
new->len = len;
new->dst = dma_dest;
new->src = dma_src;
new->async_tx.ack = 0;
return &new->async_tx;
} else
return NULL;
......@@ -741,6 +742,7 @@ static struct dma_async_tx_descriptor *ioat2_dma_prep_memcpy(
new->len = len;
new->dst = dma_dest;
new->src = dma_src;
new->async_tx.ack = 0;
return &new->async_tx;
} else
return NULL;
......
......@@ -366,7 +366,7 @@ __dma_has_cap(enum dma_transaction_type tx_type, dma_cap_mask_t *srcp)
*/
static inline void dma_async_issue_pending(struct dma_chan *chan)
{
return chan->device->device_issue_pending(chan);
chan->device->device_issue_pending(chan);
}
#define dma_async_memcpy_issue_pending(chan) dma_async_issue_pending(chan)
......
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