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Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: ppc440spe-adma: adds updated ppc440spe adma driver iop-adma.c: use resource_size() dmaengine: clarify the meaning of the DMA_CTRL_ACK flag sh: stylistic improvements for the DMA driver dmaengine: fix dmatest to verify minimum transfer length and test buffer size sh: DMA driver has to specify its alignment requirements Add COH 901 318 DMA block driver v5
This commit is contained in:
Linus Torvalds
commit
7949456b1b
19 changed files with 7828 additions and 31 deletions
93
Documentation/powerpc/dts-bindings/4xx/ppc440spe-adma.txt
Normal file
93
Documentation/powerpc/dts-bindings/4xx/ppc440spe-adma.txt
Normal file
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@ -0,0 +1,93 @@
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PPC440SPe DMA/XOR (DMA Controller and XOR Accelerator)
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Device nodes needed for operation of the ppc440spe-adma driver
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are specified hereby. These are I2O/DMA, DMA and XOR nodes
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for DMA engines and Memory Queue Module node. The latter is used
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by ADMA driver for configuration of RAID-6 H/W capabilities of
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the PPC440SPe. In addition to the nodes and properties described
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below, the ranges property of PLB node must specify ranges for
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DMA devices.
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i) The I2O node
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Required properties:
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- compatible : "ibm,i2o-440spe";
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- reg : <registers mapping>
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- dcr-reg : <DCR registers range>
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Example:
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I2O: i2o@400100000 {
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compatible = "ibm,i2o-440spe";
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reg = <0x00000004 0x00100000 0x100>;
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dcr-reg = <0x060 0x020>;
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};
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ii) The DMA node
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Required properties:
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- compatible : "ibm,dma-440spe";
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- cell-index : 1 cell, hardware index of the DMA engine
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(typically 0x0 and 0x1 for DMA0 and DMA1)
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- reg : <registers mapping>
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- dcr-reg : <DCR registers range>
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- interrupts : <interrupt mapping for DMA0/1 interrupts sources:
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2 sources: DMAx CS FIFO Needs Service IRQ (on UIC0)
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and DMA Error IRQ (on UIC1). The latter is common
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for both DMA engines>.
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- interrupt-parent : needed for interrupt mapping
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Example:
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DMA0: dma0@400100100 {
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compatible = "ibm,dma-440spe";
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cell-index = <0>;
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reg = <0x00000004 0x00100100 0x100>;
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dcr-reg = <0x060 0x020>;
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interrupt-parent = <&DMA0>;
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interrupts = <0 1>;
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#interrupt-cells = <1>;
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#address-cells = <0>;
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#size-cells = <0>;
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interrupt-map = <
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0 &UIC0 0x14 4
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1 &UIC1 0x16 4>;
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};
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iii) XOR Accelerator node
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Required properties:
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- compatible : "amcc,xor-accelerator";
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- reg : <registers mapping>
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- interrupts : <interrupt mapping for XOR interrupt source>
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- interrupt-parent : for interrupt mapping
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Example:
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xor-accel@400200000 {
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compatible = "amcc,xor-accelerator";
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reg = <0x00000004 0x00200000 0x400>;
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interrupt-parent = <&UIC1>;
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interrupts = <0x1f 4>;
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};
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iv) Memory Queue Module node
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Required properties:
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- compatible : "ibm,mq-440spe";
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- dcr-reg : <DCR registers range>
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Example:
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MQ0: mq {
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compatible = "ibm,mq-440spe";
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dcr-reg = <0x040 0x020>;
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};
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281
arch/arm/mach-u300/include/mach/coh901318.h
Normal file
281
arch/arm/mach-u300/include/mach/coh901318.h
Normal file
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@ -0,0 +1,281 @@
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/*
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*
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* include/linux/coh901318.h
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*
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*
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* Copyright (C) 2007-2009 ST-Ericsson
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* License terms: GNU General Public License (GPL) version 2
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* DMA driver for COH 901 318
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* Author: Per Friden <per.friden@stericsson.com>
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*/
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#ifndef COH901318_H
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#define COH901318_H
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#include <linux/device.h>
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#include <linux/dmaengine.h>
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#define MAX_DMA_PACKET_SIZE_SHIFT 11
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#define MAX_DMA_PACKET_SIZE (1 << MAX_DMA_PACKET_SIZE_SHIFT)
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/**
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* struct coh901318_lli - linked list item for DMAC
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* @control: control settings for DMAC
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* @src_addr: transfer source address
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* @dst_addr: transfer destination address
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* @link_addr: physical address to next lli
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* @virt_link_addr: virtual addres of next lli (only used by pool_free)
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* @phy_this: physical address of current lli (only used by pool_free)
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*/
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struct coh901318_lli {
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u32 control;
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dma_addr_t src_addr;
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dma_addr_t dst_addr;
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dma_addr_t link_addr;
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void *virt_link_addr;
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dma_addr_t phy_this;
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};
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/**
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* struct coh901318_params - parameters for DMAC configuration
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* @config: DMA config register
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* @ctrl_lli_last: DMA control register for the last lli in the list
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* @ctrl_lli: DMA control register for an lli
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* @ctrl_lli_chained: DMA control register for a chained lli
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*/
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struct coh901318_params {
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u32 config;
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u32 ctrl_lli_last;
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u32 ctrl_lli;
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u32 ctrl_lli_chained;
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};
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/**
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* struct coh_dma_channel - dma channel base
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* @name: ascii name of dma channel
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* @number: channel id number
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* @desc_nbr_max: number of preallocated descriptortors
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* @priority_high: prio of channel, 0 low otherwise high.
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* @param: configuration parameters
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* @dev_addr: physical address of periphal connected to channel
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*/
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struct coh_dma_channel {
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const char name[32];
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const int number;
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const int desc_nbr_max;
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const int priority_high;
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const struct coh901318_params param;
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const dma_addr_t dev_addr;
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};
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/**
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* dma_access_memory_state_t - register dma for memory access
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*
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* @dev: The dma device
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* @active: 1 means dma intends to access memory
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* 0 means dma wont access memory
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*/
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typedef void (*dma_access_memory_state_t)(struct device *dev,
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bool active);
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/**
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* struct powersave - DMA power save structure
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* @lock: lock protecting data in this struct
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* @started_channels: bit mask indicating active dma channels
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*/
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struct powersave {
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spinlock_t lock;
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u64 started_channels;
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};
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/**
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* struct coh901318_platform - platform arch structure
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* @chans_slave: specifying dma slave channels
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* @chans_memcpy: specifying dma memcpy channels
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* @access_memory_state: requesting DMA memeory access (on / off)
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* @chan_conf: dma channel configurations
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* @max_channels: max number of dma chanenls
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*/
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struct coh901318_platform {
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const int *chans_slave;
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const int *chans_memcpy;
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const dma_access_memory_state_t access_memory_state;
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const struct coh_dma_channel *chan_conf;
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const int max_channels;
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};
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/**
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* coh901318_get_bytes_left() - Get number of bytes left on a current transfer
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* @chan: dma channel handle
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* return number of bytes left, or negative on error
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*/
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u32 coh901318_get_bytes_left(struct dma_chan *chan);
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/**
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* coh901318_stop() - Stops dma transfer
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* @chan: dma channel handle
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* return 0 on success otherwise negative value
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*/
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void coh901318_stop(struct dma_chan *chan);
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/**
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* coh901318_continue() - Resumes a stopped dma transfer
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* @chan: dma channel handle
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* return 0 on success otherwise negative value
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*/
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void coh901318_continue(struct dma_chan *chan);
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/**
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* coh901318_filter_id() - DMA channel filter function
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* @chan: dma channel handle
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* @chan_id: id of dma channel to be filter out
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*
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* In dma_request_channel() it specifies what channel id to be requested
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*/
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bool coh901318_filter_id(struct dma_chan *chan, void *chan_id);
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/*
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* DMA Controller - this access the static mappings of the coh901318 dma.
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*
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*/
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#define COH901318_MOD32_MASK (0x1F)
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#define COH901318_WORD_MASK (0xFFFFFFFF)
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/* INT_STATUS - Interrupt Status Registers 32bit (R/-) */
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#define COH901318_INT_STATUS1 (0x0000)
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#define COH901318_INT_STATUS2 (0x0004)
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/* TC_INT_STATUS - Terminal Count Interrupt Status Registers 32bit (R/-) */
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#define COH901318_TC_INT_STATUS1 (0x0008)
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#define COH901318_TC_INT_STATUS2 (0x000C)
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/* TC_INT_CLEAR - Terminal Count Interrupt Clear Registers 32bit (-/W) */
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#define COH901318_TC_INT_CLEAR1 (0x0010)
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#define COH901318_TC_INT_CLEAR2 (0x0014)
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/* RAW_TC_INT_STATUS - Raw Term Count Interrupt Status Registers 32bit (R/-) */
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#define COH901318_RAW_TC_INT_STATUS1 (0x0018)
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#define COH901318_RAW_TC_INT_STATUS2 (0x001C)
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/* BE_INT_STATUS - Bus Error Interrupt Status Registers 32bit (R/-) */
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#define COH901318_BE_INT_STATUS1 (0x0020)
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#define COH901318_BE_INT_STATUS2 (0x0024)
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/* BE_INT_CLEAR - Bus Error Interrupt Clear Registers 32bit (-/W) */
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#define COH901318_BE_INT_CLEAR1 (0x0028)
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#define COH901318_BE_INT_CLEAR2 (0x002C)
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/* RAW_BE_INT_STATUS - Raw Term Count Interrupt Status Registers 32bit (R/-) */
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#define COH901318_RAW_BE_INT_STATUS1 (0x0030)
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#define COH901318_RAW_BE_INT_STATUS2 (0x0034)
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/*
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* CX_CFG - Channel Configuration Registers 32bit (R/W)
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*/
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#define COH901318_CX_CFG (0x0100)
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#define COH901318_CX_CFG_SPACING (0x04)
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/* Channel enable activates tha dma job */
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#define COH901318_CX_CFG_CH_ENABLE (0x00000001)
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#define COH901318_CX_CFG_CH_DISABLE (0x00000000)
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/* Request Mode */
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#define COH901318_CX_CFG_RM_MASK (0x00000006)
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#define COH901318_CX_CFG_RM_MEMORY_TO_MEMORY (0x0 << 1)
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#define COH901318_CX_CFG_RM_PRIMARY_TO_MEMORY (0x1 << 1)
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#define COH901318_CX_CFG_RM_MEMORY_TO_PRIMARY (0x1 << 1)
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#define COH901318_CX_CFG_RM_PRIMARY_TO_SECONDARY (0x3 << 1)
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#define COH901318_CX_CFG_RM_SECONDARY_TO_PRIMARY (0x3 << 1)
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/* Linked channel request field. RM must == 11 */
|
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#define COH901318_CX_CFG_LCRF_SHIFT 3
|
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#define COH901318_CX_CFG_LCRF_MASK (0x000001F8)
|
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#define COH901318_CX_CFG_LCR_DISABLE (0x00000000)
|
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/* Terminal Counter Interrupt Request Mask */
|
||||
#define COH901318_CX_CFG_TC_IRQ_ENABLE (0x00000200)
|
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#define COH901318_CX_CFG_TC_IRQ_DISABLE (0x00000000)
|
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/* Bus Error interrupt Mask */
|
||||
#define COH901318_CX_CFG_BE_IRQ_ENABLE (0x00000400)
|
||||
#define COH901318_CX_CFG_BE_IRQ_DISABLE (0x00000000)
|
||||
|
||||
/*
|
||||
* CX_STAT - Channel Status Registers 32bit (R/-)
|
||||
*/
|
||||
#define COH901318_CX_STAT (0x0200)
|
||||
#define COH901318_CX_STAT_SPACING (0x04)
|
||||
#define COH901318_CX_STAT_RBE_IRQ_IND (0x00000008)
|
||||
#define COH901318_CX_STAT_RTC_IRQ_IND (0x00000004)
|
||||
#define COH901318_CX_STAT_ACTIVE (0x00000002)
|
||||
#define COH901318_CX_STAT_ENABLED (0x00000001)
|
||||
|
||||
/*
|
||||
* CX_CTRL - Channel Control Registers 32bit (R/W)
|
||||
*/
|
||||
#define COH901318_CX_CTRL (0x0400)
|
||||
#define COH901318_CX_CTRL_SPACING (0x10)
|
||||
/* Transfer Count Enable */
|
||||
#define COH901318_CX_CTRL_TC_ENABLE (0x00001000)
|
||||
#define COH901318_CX_CTRL_TC_DISABLE (0x00000000)
|
||||
/* Transfer Count Value 0 - 4095 */
|
||||
#define COH901318_CX_CTRL_TC_VALUE_MASK (0x00000FFF)
|
||||
/* Burst count */
|
||||
#define COH901318_CX_CTRL_BURST_COUNT_MASK (0x0000E000)
|
||||
#define COH901318_CX_CTRL_BURST_COUNT_64_BYTES (0x7 << 13)
|
||||
#define COH901318_CX_CTRL_BURST_COUNT_48_BYTES (0x6 << 13)
|
||||
#define COH901318_CX_CTRL_BURST_COUNT_32_BYTES (0x5 << 13)
|
||||
#define COH901318_CX_CTRL_BURST_COUNT_16_BYTES (0x4 << 13)
|
||||
#define COH901318_CX_CTRL_BURST_COUNT_8_BYTES (0x3 << 13)
|
||||
#define COH901318_CX_CTRL_BURST_COUNT_4_BYTES (0x2 << 13)
|
||||
#define COH901318_CX_CTRL_BURST_COUNT_2_BYTES (0x1 << 13)
|
||||
#define COH901318_CX_CTRL_BURST_COUNT_1_BYTE (0x0 << 13)
|
||||
/* Source bus size */
|
||||
#define COH901318_CX_CTRL_SRC_BUS_SIZE_MASK (0x00030000)
|
||||
#define COH901318_CX_CTRL_SRC_BUS_SIZE_32_BITS (0x2 << 16)
|
||||
#define COH901318_CX_CTRL_SRC_BUS_SIZE_16_BITS (0x1 << 16)
|
||||
#define COH901318_CX_CTRL_SRC_BUS_SIZE_8_BITS (0x0 << 16)
|
||||
/* Source address increment */
|
||||
#define COH901318_CX_CTRL_SRC_ADDR_INC_ENABLE (0x00040000)
|
||||
#define COH901318_CX_CTRL_SRC_ADDR_INC_DISABLE (0x00000000)
|
||||
/* Destination Bus Size */
|
||||
#define COH901318_CX_CTRL_DST_BUS_SIZE_MASK (0x00180000)
|
||||
#define COH901318_CX_CTRL_DST_BUS_SIZE_32_BITS (0x2 << 19)
|
||||
#define COH901318_CX_CTRL_DST_BUS_SIZE_16_BITS (0x1 << 19)
|
||||
#define COH901318_CX_CTRL_DST_BUS_SIZE_8_BITS (0x0 << 19)
|
||||
/* Destination address increment */
|
||||
#define COH901318_CX_CTRL_DST_ADDR_INC_ENABLE (0x00200000)
|
||||
#define COH901318_CX_CTRL_DST_ADDR_INC_DISABLE (0x00000000)
|
||||
/* Master Mode (Master2 is only connected to MSL) */
|
||||
#define COH901318_CX_CTRL_MASTER_MODE_MASK (0x00C00000)
|
||||
#define COH901318_CX_CTRL_MASTER_MODE_M2R_M1W (0x3 << 22)
|
||||
#define COH901318_CX_CTRL_MASTER_MODE_M1R_M2W (0x2 << 22)
|
||||
#define COH901318_CX_CTRL_MASTER_MODE_M2RW (0x1 << 22)
|
||||
#define COH901318_CX_CTRL_MASTER_MODE_M1RW (0x0 << 22)
|
||||
/* Terminal Count flag to PER enable */
|
||||
#define COH901318_CX_CTRL_TCP_ENABLE (0x01000000)
|
||||
#define COH901318_CX_CTRL_TCP_DISABLE (0x00000000)
|
||||
/* Terminal Count flags to CPU enable */
|
||||
#define COH901318_CX_CTRL_TC_IRQ_ENABLE (0x02000000)
|
||||
#define COH901318_CX_CTRL_TC_IRQ_DISABLE (0x00000000)
|
||||
/* Hand shake to peripheral */
|
||||
#define COH901318_CX_CTRL_HSP_ENABLE (0x04000000)
|
||||
#define COH901318_CX_CTRL_HSP_DISABLE (0x00000000)
|
||||
#define COH901318_CX_CTRL_HSS_ENABLE (0x08000000)
|
||||
#define COH901318_CX_CTRL_HSS_DISABLE (0x00000000)
|
||||
/* DMA mode */
|
||||
#define COH901318_CX_CTRL_DDMA_MASK (0x30000000)
|
||||
#define COH901318_CX_CTRL_DDMA_LEGACY (0x0 << 28)
|
||||
#define COH901318_CX_CTRL_DDMA_DEMAND_DMA1 (0x1 << 28)
|
||||
#define COH901318_CX_CTRL_DDMA_DEMAND_DMA2 (0x2 << 28)
|
||||
/* Primary Request Data Destination */
|
||||
#define COH901318_CX_CTRL_PRDD_MASK (0x40000000)
|
||||
#define COH901318_CX_CTRL_PRDD_DEST (0x1 << 30)
|
||||
#define COH901318_CX_CTRL_PRDD_SOURCE (0x0 << 30)
|
||||
|
||||
/*
|
||||
* CX_SRC_ADDR - Channel Source Address Registers 32bit (R/W)
|
||||
*/
|
||||
#define COH901318_CX_SRC_ADDR (0x0404)
|
||||
#define COH901318_CX_SRC_ADDR_SPACING (0x10)
|
||||
|
||||
/*
|
||||
* CX_DST_ADDR - Channel Destination Address Registers 32bit R/W
|
||||
*/
|
||||
#define COH901318_CX_DST_ADDR (0x0408)
|
||||
#define COH901318_CX_DST_ADDR_SPACING (0x10)
|
||||
|
||||
/*
|
||||
* CX_LNK_ADDR - Channel Link Address Registers 32bit (R/W)
|
||||
*/
|
||||
#define COH901318_CX_LNK_ADDR (0x040C)
|
||||
#define COH901318_CX_LNK_ADDR_SPACING (0x10)
|
||||
#define COH901318_CX_LNK_LINK_IMMEDIATE (0x00000001)
|
||||
#endif /* COH901318_H */
|
||||
47
arch/powerpc/include/asm/async_tx.h
Normal file
47
arch/powerpc/include/asm/async_tx.h
Normal file
|
|
@ -0,0 +1,47 @@
|
|||
/*
|
||||
* Copyright (C) 2008-2009 DENX Software Engineering.
|
||||
*
|
||||
* Author: Yuri Tikhonov <yur@emcraft.com>
|
||||
*
|
||||
* 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 _ASM_POWERPC_ASYNC_TX_H_
|
||||
#define _ASM_POWERPC_ASYNC_TX_H_
|
||||
|
||||
#if defined(CONFIG_440SPe) || defined(CONFIG_440SP)
|
||||
extern struct dma_chan *
|
||||
ppc440spe_async_tx_find_best_channel(enum dma_transaction_type cap,
|
||||
struct page **dst_lst, int dst_cnt, struct page **src_lst,
|
||||
int src_cnt, size_t src_sz);
|
||||
|
||||
#define async_tx_find_channel(dep, cap, dst_lst, dst_cnt, src_lst, \
|
||||
src_cnt, src_sz) \
|
||||
ppc440spe_async_tx_find_best_channel(cap, dst_lst, dst_cnt, src_lst, \
|
||||
src_cnt, src_sz)
|
||||
#else
|
||||
|
||||
#define async_tx_find_channel(dep, type, dst, dst_count, src, src_count, len) \
|
||||
__async_tx_find_channel(dep, type)
|
||||
|
||||
struct dma_chan *
|
||||
__async_tx_find_channel(struct async_submit_ctl *submit,
|
||||
enum dma_transaction_type tx_type);
|
||||
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
|
@ -157,4 +157,27 @@
|
|||
#define L2C_SNP_SSR_32G 0x0000f000
|
||||
#define L2C_SNP_ESR 0x00000800
|
||||
|
||||
/*
|
||||
* DCR register offsets for 440SP/440SPe I2O/DMA controller.
|
||||
* The base address is configured in the device tree.
|
||||
*/
|
||||
#define DCRN_I2O0_IBAL 0x006
|
||||
#define DCRN_I2O0_IBAH 0x007
|
||||
#define I2O_REG_ENABLE 0x00000001 /* Enable I2O/DMA access */
|
||||
|
||||
/* 440SP/440SPe Software Reset DCR */
|
||||
#define DCRN_SDR0_SRST 0x0200
|
||||
#define DCRN_SDR0_SRST_I2ODMA (0x80000000 >> 15) /* Reset I2O/DMA */
|
||||
|
||||
/* 440SP/440SPe Memory Queue DCR offsets */
|
||||
#define DCRN_MQ0_XORBA 0x04
|
||||
#define DCRN_MQ0_CF2H 0x06
|
||||
#define DCRN_MQ0_CFBHL 0x0f
|
||||
#define DCRN_MQ0_BAUH 0x10
|
||||
|
||||
/* HB/LL Paths Configuration Register */
|
||||
#define MQ0_CFBHL_TPLM 28
|
||||
#define MQ0_CFBHL_HBCL 23
|
||||
#define MQ0_CFBHL_POLY 15
|
||||
|
||||
#endif /* __DCR_REGS_H__ */
|
||||
|
|
|
|||
|
|
@ -111,6 +111,24 @@ config SH_DMAE
|
|||
help
|
||||
Enable support for the Renesas SuperH DMA controllers.
|
||||
|
||||
config COH901318
|
||||
bool "ST-Ericsson COH901318 DMA support"
|
||||
select DMA_ENGINE
|
||||
depends on ARCH_U300
|
||||
help
|
||||
Enable support for ST-Ericsson COH 901 318 DMA.
|
||||
|
||||
config AMCC_PPC440SPE_ADMA
|
||||
tristate "AMCC PPC440SPe ADMA support"
|
||||
depends on 440SPe || 440SP
|
||||
select DMA_ENGINE
|
||||
select ARCH_HAS_ASYNC_TX_FIND_CHANNEL
|
||||
help
|
||||
Enable support for the AMCC PPC440SPe RAID engines.
|
||||
|
||||
config ARCH_HAS_ASYNC_TX_FIND_CHANNEL
|
||||
bool
|
||||
|
||||
config DMA_ENGINE
|
||||
bool
|
||||
|
||||
|
|
|
|||
|
|
@ -10,3 +10,5 @@ obj-$(CONFIG_AT_HDMAC) += at_hdmac.o
|
|||
obj-$(CONFIG_MX3_IPU) += ipu/
|
||||
obj-$(CONFIG_TXX9_DMAC) += txx9dmac.o
|
||||
obj-$(CONFIG_SH_DMAE) += shdma.o
|
||||
obj-$(CONFIG_COH901318) += coh901318.o coh901318_lli.o
|
||||
obj-$(CONFIG_AMCC_PPC440SPE_ADMA) += ppc4xx/
|
||||
|
|
|
|||
1325
drivers/dma/coh901318.c
Normal file
1325
drivers/dma/coh901318.c
Normal file
File diff suppressed because it is too large
Load diff
318
drivers/dma/coh901318_lli.c
Normal file
318
drivers/dma/coh901318_lli.c
Normal file
|
|
@ -0,0 +1,318 @@
|
|||
/*
|
||||
* driver/dma/coh901318_lli.c
|
||||
*
|
||||
* Copyright (C) 2007-2009 ST-Ericsson
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
* Support functions for handling lli for dma
|
||||
* Author: Per Friden <per.friden@stericsson.com>
|
||||
*/
|
||||
|
||||
#include <linux/dma-mapping.h>
|
||||
#include <linux/spinlock.h>
|
||||
#include <linux/dmapool.h>
|
||||
#include <linux/memory.h>
|
||||
#include <mach/coh901318.h>
|
||||
|
||||
#include "coh901318_lli.h"
|
||||
|
||||
#if (defined(CONFIG_DEBUG_FS) && defined(CONFIG_U300_DEBUG))
|
||||
#define DEBUGFS_POOL_COUNTER_RESET(pool) (pool->debugfs_pool_counter = 0)
|
||||
#define DEBUGFS_POOL_COUNTER_ADD(pool, add) (pool->debugfs_pool_counter += add)
|
||||
#else
|
||||
#define DEBUGFS_POOL_COUNTER_RESET(pool)
|
||||
#define DEBUGFS_POOL_COUNTER_ADD(pool, add)
|
||||
#endif
|
||||
|
||||
static struct coh901318_lli *
|
||||
coh901318_lli_next(struct coh901318_lli *data)
|
||||
{
|
||||
if (data == NULL || data->link_addr == 0)
|
||||
return NULL;
|
||||
|
||||
return (struct coh901318_lli *) data->virt_link_addr;
|
||||
}
|
||||
|
||||
int coh901318_pool_create(struct coh901318_pool *pool,
|
||||
struct device *dev,
|
||||
size_t size, size_t align)
|
||||
{
|
||||
spin_lock_init(&pool->lock);
|
||||
pool->dev = dev;
|
||||
pool->dmapool = dma_pool_create("lli_pool", dev, size, align, 0);
|
||||
|
||||
DEBUGFS_POOL_COUNTER_RESET(pool);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int coh901318_pool_destroy(struct coh901318_pool *pool)
|
||||
{
|
||||
|
||||
dma_pool_destroy(pool->dmapool);
|
||||
return 0;
|
||||
}
|
||||
|
||||
struct coh901318_lli *
|
||||
coh901318_lli_alloc(struct coh901318_pool *pool, unsigned int len)
|
||||
{
|
||||
int i;
|
||||
struct coh901318_lli *head;
|
||||
struct coh901318_lli *lli;
|
||||
struct coh901318_lli *lli_prev;
|
||||
dma_addr_t phy;
|
||||
|
||||
if (len == 0)
|
||||
goto err;
|
||||
|
||||
spin_lock(&pool->lock);
|
||||
|
||||
head = dma_pool_alloc(pool->dmapool, GFP_NOWAIT, &phy);
|
||||
|
||||
if (head == NULL)
|
||||
goto err;
|
||||
|
||||
DEBUGFS_POOL_COUNTER_ADD(pool, 1);
|
||||
|
||||
lli = head;
|
||||
lli->phy_this = phy;
|
||||
|
||||
for (i = 1; i < len; i++) {
|
||||
lli_prev = lli;
|
||||
|
||||
lli = dma_pool_alloc(pool->dmapool, GFP_NOWAIT, &phy);
|
||||
|
||||
if (lli == NULL)
|
||||
goto err_clean_up;
|
||||
|
||||
DEBUGFS_POOL_COUNTER_ADD(pool, 1);
|
||||
lli->phy_this = phy;
|
||||
|
||||
lli_prev->link_addr = phy;
|
||||
lli_prev->virt_link_addr = lli;
|
||||
}
|
||||
|
||||
lli->link_addr = 0x00000000U;
|
||||
|
||||
spin_unlock(&pool->lock);
|
||||
|
||||
return head;
|
||||
|
||||
err:
|
||||
spin_unlock(&pool->lock);
|
||||
return NULL;
|
||||
|
||||
err_clean_up:
|
||||
lli_prev->link_addr = 0x00000000U;
|
||||
spin_unlock(&pool->lock);
|
||||
coh901318_lli_free(pool, &head);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
void coh901318_lli_free(struct coh901318_pool *pool,
|
||||
struct coh901318_lli **lli)
|
||||
{
|
||||
struct coh901318_lli *l;
|
||||
struct coh901318_lli *next;
|
||||
|
||||
if (lli == NULL)
|
||||
return;
|
||||
|
||||
l = *lli;
|
||||
|
||||
if (l == NULL)
|
||||
return;
|
||||
|
||||
spin_lock(&pool->lock);
|
||||
|
||||
while (l->link_addr) {
|
||||
next = l->virt_link_addr;
|
||||
dma_pool_free(pool->dmapool, l, l->phy_this);
|
||||
DEBUGFS_POOL_COUNTER_ADD(pool, -1);
|
||||
l = next;
|
||||
}
|
||||
dma_pool_free(pool->dmapool, l, l->phy_this);
|
||||
DEBUGFS_POOL_COUNTER_ADD(pool, -1);
|
||||
|
||||
spin_unlock(&pool->lock);
|
||||
*lli = NULL;
|
||||
}
|
||||
|
||||
int
|
||||
coh901318_lli_fill_memcpy(struct coh901318_pool *pool,
|
||||
struct coh901318_lli *lli,
|
||||
dma_addr_t source, unsigned int size,
|
||||
dma_addr_t destination, u32 ctrl_chained,
|
||||
u32 ctrl_eom)
|
||||
{
|
||||
int s = size;
|
||||
dma_addr_t src = source;
|
||||
dma_addr_t dst = destination;
|
||||
|
||||
lli->src_addr = src;
|
||||
lli->dst_addr = dst;
|
||||
|
||||
while (lli->link_addr) {
|
||||
lli->control = ctrl_chained | MAX_DMA_PACKET_SIZE;
|
||||
lli->src_addr = src;
|
||||
lli->dst_addr = dst;
|
||||
|
||||
s -= MAX_DMA_PACKET_SIZE;
|
||||
lli = coh901318_lli_next(lli);
|
||||
|
||||
src += MAX_DMA_PACKET_SIZE;
|
||||
dst += MAX_DMA_PACKET_SIZE;
|
||||
}
|
||||
|
||||
lli->control = ctrl_eom | s;
|
||||
lli->src_addr = src;
|
||||
lli->dst_addr = dst;
|
||||
|
||||
/* One irq per single transfer */
|
||||
return 1;
|
||||
}
|
||||
|
||||
int
|
||||
coh901318_lli_fill_single(struct coh901318_pool *pool,
|
||||
struct coh901318_lli *lli,
|
||||
dma_addr_t buf, unsigned int size,
|
||||
dma_addr_t dev_addr, u32 ctrl_chained, u32 ctrl_eom,
|
||||
enum dma_data_direction dir)
|
||||
{
|
||||
int s = size;
|
||||
dma_addr_t src;
|
||||
dma_addr_t dst;
|
||||
|
||||
|
||||
if (dir == DMA_TO_DEVICE) {
|
||||
src = buf;
|
||||
dst = dev_addr;
|
||||
|
||||
} else if (dir == DMA_FROM_DEVICE) {
|
||||
|
||||
src = dev_addr;
|
||||
dst = buf;
|
||||
} else {
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
while (lli->link_addr) {
|
||||
size_t block_size = MAX_DMA_PACKET_SIZE;
|
||||
lli->control = ctrl_chained | MAX_DMA_PACKET_SIZE;
|
||||
|
||||
/* If we are on the next-to-final block and there will
|
||||
* be less than half a DMA packet left for the last
|
||||
* block, then we want to make this block a little
|
||||
* smaller to balance the sizes. This is meant to
|
||||
* avoid too small transfers if the buffer size is
|
||||
* (MAX_DMA_PACKET_SIZE*N + 1) */
|
||||
if (s < (MAX_DMA_PACKET_SIZE + MAX_DMA_PACKET_SIZE/2))
|
||||
block_size = MAX_DMA_PACKET_SIZE/2;
|
||||
|
||||
s -= block_size;
|
||||
lli->src_addr = src;
|
||||
lli->dst_addr = dst;
|
||||
|
||||
lli = coh901318_lli_next(lli);
|
||||
|
||||
if (dir == DMA_TO_DEVICE)
|
||||
src += block_size;
|
||||
else if (dir == DMA_FROM_DEVICE)
|
||||
dst += block_size;
|
||||
}
|
||||
|
||||
lli->control = ctrl_eom | s;
|
||||
lli->src_addr = src;
|
||||
lli->dst_addr = dst;
|
||||
|
||||
/* One irq per single transfer */
|
||||
return 1;
|
||||
}
|
||||
|
||||
int
|
||||
coh901318_lli_fill_sg(struct coh901318_pool *pool,
|
||||
struct coh901318_lli *lli,
|
||||
struct scatterlist *sgl, unsigned int nents,
|
||||
dma_addr_t dev_addr, u32 ctrl_chained, u32 ctrl,
|
||||
u32 ctrl_last,
|
||||
enum dma_data_direction dir, u32 ctrl_irq_mask)
|
||||
{
|
||||
int i;
|
||||
struct scatterlist *sg;
|
||||
u32 ctrl_sg;
|
||||
dma_addr_t src = 0;
|
||||
dma_addr_t dst = 0;
|
||||
int nbr_of_irq = 0;
|
||||
u32 bytes_to_transfer;
|
||||
u32 elem_size;
|
||||
|
||||
if (lli == NULL)
|
||||
goto err;
|
||||
|
||||
spin_lock(&pool->lock);
|
||||
|
||||
if (dir == DMA_TO_DEVICE)
|
||||
dst = dev_addr;
|
||||
else if (dir == DMA_FROM_DEVICE)
|
||||
src = dev_addr;
|
||||
else
|
||||
goto err;
|
||||
|
||||
for_each_sg(sgl, sg, nents, i) {
|
||||
if (sg_is_chain(sg)) {
|
||||
/* sg continues to the next sg-element don't
|
||||
* send ctrl_finish until the last
|
||||
* sg-element in the chain
|
||||
*/
|
||||
ctrl_sg = ctrl_chained;
|
||||
} else if (i == nents - 1)
|
||||
ctrl_sg = ctrl_last;
|
||||
else
|
||||
ctrl_sg = ctrl ? ctrl : ctrl_last;
|
||||
|
||||
|
||||
if ((ctrl_sg & ctrl_irq_mask))
|
||||
nbr_of_irq++;
|
||||
|
||||
if (dir == DMA_TO_DEVICE)
|
||||
/* increment source address */
|
||||
src = sg_dma_address(sg);
|
||||
else
|
||||
/* increment destination address */
|
||||
dst = sg_dma_address(sg);
|
||||
|
||||
bytes_to_transfer = sg_dma_len(sg);
|
||||
|
||||
while (bytes_to_transfer) {
|
||||
u32 val;
|
||||
|
||||
if (bytes_to_transfer > MAX_DMA_PACKET_SIZE) {
|
||||
elem_size = MAX_DMA_PACKET_SIZE;
|
||||
val = ctrl_chained;
|
||||
} else {
|
||||
elem_size = bytes_to_transfer;
|
||||
val = ctrl_sg;
|
||||
}
|
||||
|
||||
lli->control = val | elem_size;
|
||||
lli->src_addr = src;
|
||||
lli->dst_addr = dst;
|
||||
|
||||
if (dir == DMA_FROM_DEVICE)
|
||||
dst += elem_size;
|
||||
else
|
||||
src += elem_size;
|
||||
|
||||
BUG_ON(lli->link_addr & 3);
|
||||
|
||||
bytes_to_transfer -= elem_size;
|
||||
lli = coh901318_lli_next(lli);
|
||||
}
|
||||
|
||||
}
|
||||
spin_unlock(&pool->lock);
|
||||
|
||||
/* There can be many IRQs per sg transfer */
|
||||
return nbr_of_irq;
|
||||
err:
|
||||
spin_unlock(&pool->lock);
|
||||
return -EINVAL;
|
||||
}
|
||||
124
drivers/dma/coh901318_lli.h
Normal file
124
drivers/dma/coh901318_lli.h
Normal file
|
|
@ -0,0 +1,124 @@
|
|||
/*
|
||||
* driver/dma/coh901318_lli.h
|
||||
*
|
||||
* Copyright (C) 2007-2009 ST-Ericsson
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
* Support functions for handling lli for coh901318
|
||||
* Author: Per Friden <per.friden@stericsson.com>
|
||||
*/
|
||||
|
||||
#ifndef COH901318_LLI_H
|
||||
#define COH901318_LLI_H
|
||||
|
||||
#include <mach/coh901318.h>
|
||||
|
||||
struct device;
|
||||
|
||||
struct coh901318_pool {
|
||||
spinlock_t lock;
|
||||
struct dma_pool *dmapool;
|
||||
struct device *dev;
|
||||
|
||||
#ifdef CONFIG_DEBUG_FS
|
||||
int debugfs_pool_counter;
|
||||
#endif
|
||||
};
|
||||
|
||||
struct device;
|
||||
/**
|
||||
* coh901318_pool_create() - Creates an dma pool for lli:s
|
||||
* @pool: pool handle
|
||||
* @dev: dma device
|
||||
* @lli_nbr: number of lli:s in the pool
|
||||
* @algin: adress alignemtn of lli:s
|
||||
* returns 0 on success otherwise none zero
|
||||
*/
|
||||
int coh901318_pool_create(struct coh901318_pool *pool,
|
||||
struct device *dev,
|
||||
size_t lli_nbr, size_t align);
|
||||
|
||||
/**
|
||||
* coh901318_pool_destroy() - Destroys the dma pool
|
||||
* @pool: pool handle
|
||||
* returns 0 on success otherwise none zero
|
||||
*/
|
||||
int coh901318_pool_destroy(struct coh901318_pool *pool);
|
||||
|
||||
/**
|
||||
* coh901318_lli_alloc() - Allocates a linked list
|
||||
*
|
||||
* @pool: pool handle
|
||||
* @len: length to list
|
||||
* return: none NULL if success otherwise NULL
|
||||
*/
|
||||
struct coh901318_lli *
|
||||
coh901318_lli_alloc(struct coh901318_pool *pool,
|
||||
unsigned int len);
|
||||
|
||||
/**
|
||||
* coh901318_lli_free() - Returns the linked list items to the pool
|
||||
* @pool: pool handle
|
||||
* @lli: reference to lli pointer to be freed
|
||||
*/
|
||||
void coh901318_lli_free(struct coh901318_pool *pool,
|
||||
struct coh901318_lli **lli);
|
||||
|
||||
/**
|
||||
* coh901318_lli_fill_memcpy() - Prepares the lli:s for dma memcpy
|
||||
* @pool: pool handle
|
||||
* @lli: allocated lli
|
||||
* @src: src address
|
||||
* @size: transfer size
|
||||
* @dst: destination address
|
||||
* @ctrl_chained: ctrl for chained lli
|
||||
* @ctrl_last: ctrl for the last lli
|
||||
* returns number of CPU interrupts for the lli, negative on error.
|
||||
*/
|
||||
int
|
||||
coh901318_lli_fill_memcpy(struct coh901318_pool *pool,
|
||||
struct coh901318_lli *lli,
|
||||
dma_addr_t src, unsigned int size,
|
||||
dma_addr_t dst, u32 ctrl_chained, u32 ctrl_last);
|
||||
|
||||
/**
|
||||
* coh901318_lli_fill_single() - Prepares the lli:s for dma single transfer
|
||||
* @pool: pool handle
|
||||
* @lli: allocated lli
|
||||
* @buf: transfer buffer
|
||||
* @size: transfer size
|
||||
* @dev_addr: address of periphal
|
||||
* @ctrl_chained: ctrl for chained lli
|
||||
* @ctrl_last: ctrl for the last lli
|
||||
* @dir: direction of transfer (to or from device)
|
||||
* returns number of CPU interrupts for the lli, negative on error.
|
||||
*/
|
||||
int
|
||||
coh901318_lli_fill_single(struct coh901318_pool *pool,
|
||||
struct coh901318_lli *lli,
|
||||
dma_addr_t buf, unsigned int size,
|
||||
dma_addr_t dev_addr, u32 ctrl_chained, u32 ctrl_last,
|
||||
enum dma_data_direction dir);
|
||||
|
||||
/**
|
||||
* coh901318_lli_fill_single() - Prepares the lli:s for dma scatter list transfer
|
||||
* @pool: pool handle
|
||||
* @lli: allocated lli
|
||||
* @sg: scatter gather list
|
||||
* @nents: number of entries in sg
|
||||
* @dev_addr: address of periphal
|
||||
* @ctrl_chained: ctrl for chained lli
|
||||
* @ctrl: ctrl of middle lli
|
||||
* @ctrl_last: ctrl for the last lli
|
||||
* @dir: direction of transfer (to or from device)
|
||||
* @ctrl_irq_mask: ctrl mask for CPU interrupt
|
||||
* returns number of CPU interrupts for the lli, negative on error.
|
||||
*/
|
||||
int
|
||||
coh901318_lli_fill_sg(struct coh901318_pool *pool,
|
||||
struct coh901318_lli *lli,
|
||||
struct scatterlist *sg, unsigned int nents,
|
||||
dma_addr_t dev_addr, u32 ctrl_chained,
|
||||
u32 ctrl, u32 ctrl_last,
|
||||
enum dma_data_direction dir, u32 ctrl_irq_mask);
|
||||
|
||||
#endif /* COH901318_LLI_H */
|
||||
|
|
@ -298,10 +298,6 @@ static int dmatest_func(void *data)
|
|||
|
||||
total_tests++;
|
||||
|
||||
len = dmatest_random() % test_buf_size + 1;
|
||||
src_off = dmatest_random() % (test_buf_size - len + 1);
|
||||
dst_off = dmatest_random() % (test_buf_size - len + 1);
|
||||
|
||||
/* honor alignment restrictions */
|
||||
if (thread->type == DMA_MEMCPY)
|
||||
align = dev->copy_align;
|
||||
|
|
@ -310,7 +306,19 @@ static int dmatest_func(void *data)
|
|||
else if (thread->type == DMA_PQ)
|
||||
align = dev->pq_align;
|
||||
|
||||
if (1 << align > test_buf_size) {
|
||||
pr_err("%u-byte buffer too small for %d-byte alignment\n",
|
||||
test_buf_size, 1 << align);
|
||||
break;
|
||||
}
|
||||
|
||||
len = dmatest_random() % test_buf_size + 1;
|
||||
len = (len >> align) << align;
|
||||
if (!len)
|
||||
len = 1 << align;
|
||||
src_off = dmatest_random() % (test_buf_size - len + 1);
|
||||
dst_off = dmatest_random() % (test_buf_size - len + 1);
|
||||
|
||||
src_off = (src_off >> align) << align;
|
||||
dst_off = (dst_off >> align) << align;
|
||||
|
||||
|
|
|
|||
|
|
@ -1470,7 +1470,7 @@ static int __devinit iop_adma_probe(struct platform_device *pdev)
|
|||
return -ENODEV;
|
||||
|
||||
if (!devm_request_mem_region(&pdev->dev, res->start,
|
||||
res->end - res->start, pdev->name))
|
||||
resource_size(res), pdev->name))
|
||||
return -EBUSY;
|
||||
|
||||
adev = kzalloc(sizeof(*adev), GFP_KERNEL);
|
||||
|
|
@ -1542,7 +1542,7 @@ static int __devinit iop_adma_probe(struct platform_device *pdev)
|
|||
iop_chan->device = adev;
|
||||
|
||||
iop_chan->mmr_base = devm_ioremap(&pdev->dev, res->start,
|
||||
res->end - res->start);
|
||||
resource_size(res));
|
||||
if (!iop_chan->mmr_base) {
|
||||
ret = -ENOMEM;
|
||||
goto err_free_iop_chan;
|
||||
|
|
|
|||
1
drivers/dma/ppc4xx/Makefile
Normal file
1
drivers/dma/ppc4xx/Makefile
Normal file
|
|
@ -0,0 +1 @@
|
|||
obj-$(CONFIG_AMCC_PPC440SPE_ADMA) += adma.o
|
||||
5027
drivers/dma/ppc4xx/adma.c
Normal file
5027
drivers/dma/ppc4xx/adma.c
Normal file
File diff suppressed because it is too large
Load diff
195
drivers/dma/ppc4xx/adma.h
Normal file
195
drivers/dma/ppc4xx/adma.h
Normal file
|
|
@ -0,0 +1,195 @@
|
|||
/*
|
||||
* 2006-2009 (C) DENX Software Engineering.
|
||||
*
|
||||
* Author: Yuri Tikhonov <yur@emcraft.com>
|
||||
*
|
||||
* This file is licensed under the terms of the GNU General Public License
|
||||
* version 2. This program is licensed "as is" without any warranty of
|
||||
* any kind, whether express or implied.
|
||||
*/
|
||||
|
||||
#ifndef _PPC440SPE_ADMA_H
|
||||
#define _PPC440SPE_ADMA_H
|
||||
|
||||
#include <linux/types.h>
|
||||
#include "dma.h"
|
||||
#include "xor.h"
|
||||
|
||||
#define to_ppc440spe_adma_chan(chan) \
|
||||
container_of(chan, struct ppc440spe_adma_chan, common)
|
||||
#define to_ppc440spe_adma_device(dev) \
|
||||
container_of(dev, struct ppc440spe_adma_device, common)
|
||||
#define tx_to_ppc440spe_adma_slot(tx) \
|
||||
container_of(tx, struct ppc440spe_adma_desc_slot, async_tx)
|
||||
|
||||
/* Default polynomial (for 440SP is only available) */
|
||||
#define PPC440SPE_DEFAULT_POLY 0x4d
|
||||
|
||||
#define PPC440SPE_ADMA_ENGINES_NUM (XOR_ENGINES_NUM + DMA_ENGINES_NUM)
|
||||
|
||||
#define PPC440SPE_ADMA_WATCHDOG_MSEC 3
|
||||
#define PPC440SPE_ADMA_THRESHOLD 1
|
||||
|
||||
#define PPC440SPE_DMA0_ID 0
|
||||
#define PPC440SPE_DMA1_ID 1
|
||||
#define PPC440SPE_XOR_ID 2
|
||||
|
||||
#define PPC440SPE_ADMA_DMA_MAX_BYTE_COUNT 0xFFFFFFUL
|
||||
/* this is the XOR_CBBCR width */
|
||||
#define PPC440SPE_ADMA_XOR_MAX_BYTE_COUNT (1 << 31)
|
||||
#define PPC440SPE_ADMA_ZERO_SUM_MAX_BYTE_COUNT PPC440SPE_ADMA_XOR_MAX_BYTE_COUNT
|
||||
|
||||
#define PPC440SPE_RXOR_RUN 0
|
||||
|
||||
#define MQ0_CF2H_RXOR_BS_MASK 0x1FF
|
||||
|
||||
#undef ADMA_LL_DEBUG
|
||||
|
||||
/**
|
||||
* struct ppc440spe_adma_device - internal representation of an ADMA device
|
||||
* @dev: device
|
||||
* @dma_reg: base for DMAx register access
|
||||
* @xor_reg: base for XOR register access
|
||||
* @i2o_reg: base for I2O register access
|
||||
* @id: HW ADMA Device selector
|
||||
* @dma_desc_pool_virt: base of DMA descriptor region (CPU address)
|
||||
* @dma_desc_pool: base of DMA descriptor region (DMA address)
|
||||
* @pool_size: size of the pool
|
||||
* @irq: DMAx or XOR irq number
|
||||
* @err_irq: DMAx error irq number
|
||||
* @common: embedded struct dma_device
|
||||
*/
|
||||
struct ppc440spe_adma_device {
|
||||
struct device *dev;
|
||||
struct dma_regs __iomem *dma_reg;
|
||||
struct xor_regs __iomem *xor_reg;
|
||||
struct i2o_regs __iomem *i2o_reg;
|
||||
int id;
|
||||
void *dma_desc_pool_virt;
|
||||
dma_addr_t dma_desc_pool;
|
||||
size_t pool_size;
|
||||
int irq;
|
||||
int err_irq;
|
||||
struct dma_device common;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct ppc440spe_adma_chan - internal representation of an ADMA channel
|
||||
* @lock: serializes enqueue/dequeue operations to the slot pool
|
||||
* @device: parent device
|
||||
* @chain: device chain view of the descriptors
|
||||
* @common: common dmaengine channel object members
|
||||
* @all_slots: complete domain of slots usable by the channel
|
||||
* @pending: allows batching of hardware operations
|
||||
* @completed_cookie: identifier for the most recently completed operation
|
||||
* @slots_allocated: records the actual size of the descriptor slot pool
|
||||
* @hw_chain_inited: h/w descriptor chain initialization flag
|
||||
* @irq_tasklet: bottom half where ppc440spe_adma_slot_cleanup runs
|
||||
* @needs_unmap: if buffers should not be unmapped upon final processing
|
||||
* @pdest_page: P destination page for async validate operation
|
||||
* @qdest_page: Q destination page for async validate operation
|
||||
* @pdest: P dma addr for async validate operation
|
||||
* @qdest: Q dma addr for async validate operation
|
||||
*/
|
||||
struct ppc440spe_adma_chan {
|
||||
spinlock_t lock;
|
||||
struct ppc440spe_adma_device *device;
|
||||
struct list_head chain;
|
||||
struct dma_chan common;
|
||||
struct list_head all_slots;
|
||||
struct ppc440spe_adma_desc_slot *last_used;
|
||||
int pending;
|
||||
dma_cookie_t completed_cookie;
|
||||
int slots_allocated;
|
||||
int hw_chain_inited;
|
||||
struct tasklet_struct irq_tasklet;
|
||||
u8 needs_unmap;
|
||||
struct page *pdest_page;
|
||||
struct page *qdest_page;
|
||||
dma_addr_t pdest;
|
||||
dma_addr_t qdest;
|
||||
};
|
||||
|
||||
struct ppc440spe_rxor {
|
||||
u32 addrl;
|
||||
u32 addrh;
|
||||
int len;
|
||||
int xor_count;
|
||||
int addr_count;
|
||||
int desc_count;
|
||||
int state;
|
||||
};
|
||||
|
||||
/**
|
||||
* struct ppc440spe_adma_desc_slot - PPC440SPE-ADMA software descriptor
|
||||
* @phys: hardware address of the hardware descriptor chain
|
||||
* @group_head: first operation in a transaction
|
||||
* @hw_next: pointer to the next descriptor in chain
|
||||
* @async_tx: support for the async_tx api
|
||||
* @slot_node: node on the iop_adma_chan.all_slots list
|
||||
* @chain_node: node on the op_adma_chan.chain list
|
||||
* @group_list: list of slots that make up a multi-descriptor transaction
|
||||
* for example transfer lengths larger than the supported hw max
|
||||
* @unmap_len: transaction bytecount
|
||||
* @hw_desc: virtual address of the hardware descriptor chain
|
||||
* @stride: currently chained or not
|
||||
* @idx: pool index
|
||||
* @slot_cnt: total slots used in an transaction (group of operations)
|
||||
* @src_cnt: number of sources set in this descriptor
|
||||
* @dst_cnt: number of destinations set in the descriptor
|
||||
* @slots_per_op: number of slots per operation
|
||||
* @descs_per_op: number of slot per P/Q operation see comment
|
||||
* for ppc440spe_prep_dma_pqxor function
|
||||
* @flags: desc state/type
|
||||
* @reverse_flags: 1 if a corresponding rxor address uses reversed address order
|
||||
* @xor_check_result: result of zero sum
|
||||
* @crc32_result: result crc calculation
|
||||
*/
|
||||
struct ppc440spe_adma_desc_slot {
|
||||
dma_addr_t phys;
|
||||
struct ppc440spe_adma_desc_slot *group_head;
|
||||
struct ppc440spe_adma_desc_slot *hw_next;
|
||||
struct dma_async_tx_descriptor async_tx;
|
||||
struct list_head slot_node;
|
||||
struct list_head chain_node; /* node in channel ops list */
|
||||
struct list_head group_list; /* list */
|
||||
unsigned int unmap_len;
|
||||
void *hw_desc;
|
||||
u16 stride;
|
||||
u16 idx;
|
||||
u16 slot_cnt;
|
||||
u8 src_cnt;
|
||||
u8 dst_cnt;
|
||||
u8 slots_per_op;
|
||||
u8 descs_per_op;
|
||||
unsigned long flags;
|
||||
unsigned long reverse_flags[8];
|
||||
|
||||
#define PPC440SPE_DESC_INT 0 /* generate interrupt on complete */
|
||||
#define PPC440SPE_ZERO_P 1 /* clear P destionaion */
|
||||
#define PPC440SPE_ZERO_Q 2 /* clear Q destination */
|
||||
#define PPC440SPE_COHERENT 3 /* src/dst are coherent */
|
||||
|
||||
#define PPC440SPE_DESC_WXOR 4 /* WXORs are in chain */
|
||||
#define PPC440SPE_DESC_RXOR 5 /* RXOR is in chain */
|
||||
|
||||
#define PPC440SPE_DESC_RXOR123 8 /* CDB for RXOR123 operation */
|
||||
#define PPC440SPE_DESC_RXOR124 9 /* CDB for RXOR124 operation */
|
||||
#define PPC440SPE_DESC_RXOR125 10 /* CDB for RXOR125 operation */
|
||||
#define PPC440SPE_DESC_RXOR12 11 /* CDB for RXOR12 operation */
|
||||
#define PPC440SPE_DESC_RXOR_REV 12 /* CDB has srcs in reversed order */
|
||||
|
||||
#define PPC440SPE_DESC_PCHECK 13
|
||||
#define PPC440SPE_DESC_QCHECK 14
|
||||
|
||||
#define PPC440SPE_DESC_RXOR_MSK 0x3
|
||||
|
||||
struct ppc440spe_rxor rxor_cursor;
|
||||
|
||||
union {
|
||||
u32 *xor_check_result;
|
||||
u32 *crc32_result;
|
||||
};
|
||||
};
|
||||
|
||||
#endif /* _PPC440SPE_ADMA_H */
|
||||
223
drivers/dma/ppc4xx/dma.h
Normal file
223
drivers/dma/ppc4xx/dma.h
Normal file
|
|
@ -0,0 +1,223 @@
|
|||
/*
|
||||
* 440SPe's DMA engines support header file
|
||||
*
|
||||
* 2006-2009 (C) DENX Software Engineering.
|
||||
*
|
||||
* Author: Yuri Tikhonov <yur@emcraft.com>
|
||||
*
|
||||
* This file is licensed under the term of the GNU General Public License
|
||||
* version 2. The program licensed "as is" without any warranty of any
|
||||
* kind, whether express or implied.
|
||||
*/
|
||||
|
||||
#ifndef _PPC440SPE_DMA_H
|
||||
#define _PPC440SPE_DMA_H
|
||||
|
||||
#include <linux/types.h>
|
||||
|
||||
/* Number of elements in the array with statical CDBs */
|
||||
#define MAX_STAT_DMA_CDBS 16
|
||||
/* Number of DMA engines available on the contoller */
|
||||
#define DMA_ENGINES_NUM 2
|
||||
|
||||
/* Maximum h/w supported number of destinations */
|
||||
#define DMA_DEST_MAX_NUM 2
|
||||
|
||||
/* FIFO's params */
|
||||
#define DMA0_FIFO_SIZE 0x1000
|
||||
#define DMA1_FIFO_SIZE 0x1000
|
||||
#define DMA_FIFO_ENABLE (1<<12)
|
||||
|
||||
/* DMA Configuration Register. Data Transfer Engine PLB Priority: */
|
||||
#define DMA_CFG_DXEPR_LP (0<<26)
|
||||
#define DMA_CFG_DXEPR_HP (3<<26)
|
||||
#define DMA_CFG_DXEPR_HHP (2<<26)
|
||||
#define DMA_CFG_DXEPR_HHHP (1<<26)
|
||||
|
||||
/* DMA Configuration Register. DMA FIFO Manager PLB Priority: */
|
||||
#define DMA_CFG_DFMPP_LP (0<<23)
|
||||
#define DMA_CFG_DFMPP_HP (3<<23)
|
||||
#define DMA_CFG_DFMPP_HHP (2<<23)
|
||||
#define DMA_CFG_DFMPP_HHHP (1<<23)
|
||||
|
||||
/* DMA Configuration Register. Force 64-byte Alignment */
|
||||
#define DMA_CFG_FALGN (1 << 19)
|
||||
|
||||
/*UIC0:*/
|
||||
#define D0CPF_INT (1<<12)
|
||||
#define D0CSF_INT (1<<11)
|
||||
#define D1CPF_INT (1<<10)
|
||||
#define D1CSF_INT (1<<9)
|
||||
/*UIC1:*/
|
||||
#define DMAE_INT (1<<9)
|
||||
|
||||
/* I2O IOP Interrupt Mask Register */
|
||||
#define I2O_IOPIM_P0SNE (1<<3)
|
||||
#define I2O_IOPIM_P0EM (1<<5)
|
||||
#define I2O_IOPIM_P1SNE (1<<6)
|
||||
#define I2O_IOPIM_P1EM (1<<8)
|
||||
|
||||
/* DMA CDB fields */
|
||||
#define DMA_CDB_MSK (0xF)
|
||||
#define DMA_CDB_64B_ADDR (1<<2)
|
||||
#define DMA_CDB_NO_INT (1<<3)
|
||||
#define DMA_CDB_STATUS_MSK (0x3)
|
||||
#define DMA_CDB_ADDR_MSK (0xFFFFFFF0)
|
||||
|
||||
/* DMA CDB OpCodes */
|
||||
#define DMA_CDB_OPC_NO_OP (0x00)
|
||||
#define DMA_CDB_OPC_MV_SG1_SG2 (0x01)
|
||||
#define DMA_CDB_OPC_MULTICAST (0x05)
|
||||
#define DMA_CDB_OPC_DFILL128 (0x24)
|
||||
#define DMA_CDB_OPC_DCHECK128 (0x23)
|
||||
|
||||
#define DMA_CUED_XOR_BASE (0x10000000)
|
||||
#define DMA_CUED_XOR_HB (0x00000008)
|
||||
|
||||
#ifdef CONFIG_440SP
|
||||
#define DMA_CUED_MULT1_OFF 0
|
||||
#define DMA_CUED_MULT2_OFF 8
|
||||
#define DMA_CUED_MULT3_OFF 16
|
||||
#define DMA_CUED_REGION_OFF 24
|
||||
#define DMA_CUED_XOR_WIN_MSK (0xFC000000)
|
||||
#else
|
||||
#define DMA_CUED_MULT1_OFF 2
|
||||
#define DMA_CUED_MULT2_OFF 10
|
||||
#define DMA_CUED_MULT3_OFF 18
|
||||
#define DMA_CUED_REGION_OFF 26
|
||||
#define DMA_CUED_XOR_WIN_MSK (0xF0000000)
|
||||
#endif
|
||||
|
||||
#define DMA_CUED_REGION_MSK 0x3
|
||||
#define DMA_RXOR123 0x0
|
||||
#define DMA_RXOR124 0x1
|
||||
#define DMA_RXOR125 0x2
|
||||
#define DMA_RXOR12 0x3
|
||||
|
||||
/* S/G addresses */
|
||||
#define DMA_CDB_SG_SRC 1
|
||||
#define DMA_CDB_SG_DST1 2
|
||||
#define DMA_CDB_SG_DST2 3
|
||||
|
||||
/*
|
||||
* DMAx engines Command Descriptor Block Type
|
||||
*/
|
||||
struct dma_cdb {
|
||||
/*
|
||||
* Basic CDB structure (Table 20-17, p.499, 440spe_um_1_22.pdf)
|
||||
*/
|
||||
u8 pad0[2]; /* reserved */
|
||||
u8 attr; /* attributes */
|
||||
u8 opc; /* opcode */
|
||||
u32 sg1u; /* upper SG1 address */
|
||||
u32 sg1l; /* lower SG1 address */
|
||||
u32 cnt; /* SG count, 3B used */
|
||||
u32 sg2u; /* upper SG2 address */
|
||||
u32 sg2l; /* lower SG2 address */
|
||||
u32 sg3u; /* upper SG3 address */
|
||||
u32 sg3l; /* lower SG3 address */
|
||||
};
|
||||
|
||||
/*
|
||||
* DMAx hardware registers (p.515 in 440SPe UM 1.22)
|
||||
*/
|
||||
struct dma_regs {
|
||||
u32 cpfpl;
|
||||
u32 cpfph;
|
||||
u32 csfpl;
|
||||
u32 csfph;
|
||||
u32 dsts;
|
||||
u32 cfg;
|
||||
u8 pad0[0x8];
|
||||
u16 cpfhp;
|
||||
u16 cpftp;
|
||||
u16 csfhp;
|
||||
u16 csftp;
|
||||
u8 pad1[0x8];
|
||||
u32 acpl;
|
||||
u32 acph;
|
||||
u32 s1bpl;
|
||||
u32 s1bph;
|
||||
u32 s2bpl;
|
||||
u32 s2bph;
|
||||
u32 s3bpl;
|
||||
u32 s3bph;
|
||||
u8 pad2[0x10];
|
||||
u32 earl;
|
||||
u32 earh;
|
||||
u8 pad3[0x8];
|
||||
u32 seat;
|
||||
u32 sead;
|
||||
u32 op;
|
||||
u32 fsiz;
|
||||
};
|
||||
|
||||
/*
|
||||
* I2O hardware registers (p.528 in 440SPe UM 1.22)
|
||||
*/
|
||||
struct i2o_regs {
|
||||
u32 ists;
|
||||
u32 iseat;
|
||||
u32 isead;
|
||||
u8 pad0[0x14];
|
||||
u32 idbel;
|
||||
u8 pad1[0xc];
|
||||
u32 ihis;
|
||||
u32 ihim;
|
||||
u8 pad2[0x8];
|
||||
u32 ihiq;
|
||||
u32 ihoq;
|
||||
u8 pad3[0x8];
|
||||
u32 iopis;
|
||||
u32 iopim;
|
||||
u32 iopiq;
|
||||
u8 iopoq;
|
||||
u8 pad4[3];
|
||||
u16 iiflh;
|
||||
u16 iiflt;
|
||||
u16 iiplh;
|
||||
u16 iiplt;
|
||||
u16 ioflh;
|
||||
u16 ioflt;
|
||||
u16 ioplh;
|
||||
u16 ioplt;
|
||||
u32 iidc;
|
||||
u32 ictl;
|
||||
u32 ifcpp;
|
||||
u8 pad5[0x4];
|
||||
u16 mfac0;
|
||||
u16 mfac1;
|
||||
u16 mfac2;
|
||||
u16 mfac3;
|
||||
u16 mfac4;
|
||||
u16 mfac5;
|
||||
u16 mfac6;
|
||||
u16 mfac7;
|
||||
u16 ifcfh;
|
||||
u16 ifcht;
|
||||
u8 pad6[0x4];
|
||||
u32 iifmc;
|
||||
u32 iodb;
|
||||
u32 iodbc;
|
||||
u32 ifbal;
|
||||
u32 ifbah;
|
||||
u32 ifsiz;
|
||||
u32 ispd0;
|
||||
u32 ispd1;
|
||||
u32 ispd2;
|
||||
u32 ispd3;
|
||||
u32 ihipl;
|
||||
u32 ihiph;
|
||||
u32 ihopl;
|
||||
u32 ihoph;
|
||||
u32 iiipl;
|
||||
u32 iiiph;
|
||||
u32 iiopl;
|
||||
u32 iioph;
|
||||
u32 ifcpl;
|
||||
u32 ifcph;
|
||||
u8 pad7[0x8];
|
||||
u32 iopt;
|
||||
};
|
||||
|
||||
#endif /* _PPC440SPE_DMA_H */
|
||||
110
drivers/dma/ppc4xx/xor.h
Normal file
110
drivers/dma/ppc4xx/xor.h
Normal file
|
|
@ -0,0 +1,110 @@
|
|||
/*
|
||||
* 440SPe's XOR engines support header file
|
||||
*
|
||||
* 2006-2009 (C) DENX Software Engineering.
|
||||
*
|
||||
* Author: Yuri Tikhonov <yur@emcraft.com>
|
||||
*
|
||||
* This file is licensed under the term of the GNU General Public License
|
||||
* version 2. The program licensed "as is" without any warranty of any
|
||||
* kind, whether express or implied.
|
||||
*/
|
||||
|
||||
#ifndef _PPC440SPE_XOR_H
|
||||
#define _PPC440SPE_XOR_H
|
||||
|
||||
#include <linux/types.h>
|
||||
|
||||
/* Number of XOR engines available on the contoller */
|
||||
#define XOR_ENGINES_NUM 1
|
||||
|
||||
/* Number of operands supported in the h/w */
|
||||
#define XOR_MAX_OPS 16
|
||||
|
||||
/*
|
||||
* XOR Command Block Control Register bits
|
||||
*/
|
||||
#define XOR_CBCR_LNK_BIT (1<<31) /* link present */
|
||||
#define XOR_CBCR_TGT_BIT (1<<30) /* target present */
|
||||
#define XOR_CBCR_CBCE_BIT (1<<29) /* command block compete enable */
|
||||
#define XOR_CBCR_RNZE_BIT (1<<28) /* result not zero enable */
|
||||
#define XOR_CBCR_XNOR_BIT (1<<15) /* XOR/XNOR */
|
||||
#define XOR_CDCR_OAC_MSK (0x7F) /* operand address count */
|
||||
|
||||
/*
|
||||
* XORCore Status Register bits
|
||||
*/
|
||||
#define XOR_SR_XCP_BIT (1<<31) /* core processing */
|
||||
#define XOR_SR_ICB_BIT (1<<17) /* invalid CB */
|
||||
#define XOR_SR_IC_BIT (1<<16) /* invalid command */
|
||||
#define XOR_SR_IPE_BIT (1<<15) /* internal parity error */
|
||||
#define XOR_SR_RNZ_BIT (1<<2) /* result not Zero */
|
||||
#define XOR_SR_CBC_BIT (1<<1) /* CB complete */
|
||||
#define XOR_SR_CBLC_BIT (1<<0) /* CB list complete */
|
||||
|
||||
/*
|
||||
* XORCore Control Set and Reset Register bits
|
||||
*/
|
||||
#define XOR_CRSR_XASR_BIT (1<<31) /* soft reset */
|
||||
#define XOR_CRSR_XAE_BIT (1<<30) /* enable */
|
||||
#define XOR_CRSR_RCBE_BIT (1<<29) /* refetch CB enable */
|
||||
#define XOR_CRSR_PAUS_BIT (1<<28) /* pause */
|
||||
#define XOR_CRSR_64BA_BIT (1<<27) /* 64/32 CB format */
|
||||
#define XOR_CRSR_CLP_BIT (1<<25) /* continue list processing */
|
||||
|
||||
/*
|
||||
* XORCore Interrupt Enable Register
|
||||
*/
|
||||
#define XOR_IE_ICBIE_BIT (1<<17) /* Invalid Command Block IRQ Enable */
|
||||
#define XOR_IE_ICIE_BIT (1<<16) /* Invalid Command IRQ Enable */
|
||||
#define XOR_IE_RPTIE_BIT (1<<14) /* Read PLB Timeout Error IRQ Enable */
|
||||
#define XOR_IE_CBCIE_BIT (1<<1) /* CB complete interrupt enable */
|
||||
#define XOR_IE_CBLCI_BIT (1<<0) /* CB list complete interrupt enable */
|
||||
|
||||
/*
|
||||
* XOR Accelerator engine Command Block Type
|
||||
*/
|
||||
struct xor_cb {
|
||||
/*
|
||||
* Basic 64-bit format XOR CB (Table 19-1, p.463, 440spe_um_1_22.pdf)
|
||||
*/
|
||||
u32 cbc; /* control */
|
||||
u32 cbbc; /* byte count */
|
||||
u32 cbs; /* status */
|
||||
u8 pad0[4]; /* reserved */
|
||||
u32 cbtah; /* target address high */
|
||||
u32 cbtal; /* target address low */
|
||||
u32 cblah; /* link address high */
|
||||
u32 cblal; /* link address low */
|
||||
struct {
|
||||
u32 h;
|
||||
u32 l;
|
||||
} __attribute__ ((packed)) ops[16];
|
||||
} __attribute__ ((packed));
|
||||
|
||||
/*
|
||||
* XOR hardware registers Table 19-3, UM 1.22
|
||||
*/
|
||||
struct xor_regs {
|
||||
u32 op_ar[16][2]; /* operand address[0]-high,[1]-low registers */
|
||||
u8 pad0[352]; /* reserved */
|
||||
u32 cbcr; /* CB control register */
|
||||
u32 cbbcr; /* CB byte count register */
|
||||
u32 cbsr; /* CB status register */
|
||||
u8 pad1[4]; /* reserved */
|
||||
u32 cbtahr; /* operand target address high register */
|
||||
u32 cbtalr; /* operand target address low register */
|
||||
u32 cblahr; /* CB link address high register */
|
||||
u32 cblalr; /* CB link address low register */
|
||||
u32 crsr; /* control set register */
|
||||
u32 crrr; /* control reset register */
|
||||
u32 ccbahr; /* current CB address high register */
|
||||
u32 ccbalr; /* current CB address low register */
|
||||
u32 plbr; /* PLB configuration register */
|
||||
u32 ier; /* interrupt enable register */
|
||||
u32 pecr; /* parity error count register */
|
||||
u32 sr; /* status register */
|
||||
u32 revidr; /* revision ID register */
|
||||
};
|
||||
|
||||
#endif /* _PPC440SPE_XOR_H */
|
||||
|
|
@ -80,17 +80,17 @@ static int sh_dmae_rst(int id)
|
|||
unsigned short dmaor;
|
||||
|
||||
sh_dmae_ctl_stop(id);
|
||||
dmaor = (dmaor_read_reg(id)|DMAOR_INIT);
|
||||
dmaor = dmaor_read_reg(id) | DMAOR_INIT;
|
||||
|
||||
dmaor_write_reg(id, dmaor);
|
||||
if ((dmaor_read_reg(id) & (DMAOR_AE | DMAOR_NMIF))) {
|
||||
if (dmaor_read_reg(id) & (DMAOR_AE | DMAOR_NMIF)) {
|
||||
pr_warning(KERN_ERR "dma-sh: Can't initialize DMAOR.\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int dmae_is_idle(struct sh_dmae_chan *sh_chan)
|
||||
static int dmae_is_busy(struct sh_dmae_chan *sh_chan)
|
||||
{
|
||||
u32 chcr = sh_dmae_readl(sh_chan, CHCR);
|
||||
if (chcr & CHCR_DE) {
|
||||
|
|
@ -110,15 +110,14 @@ static void dmae_set_reg(struct sh_dmae_chan *sh_chan, struct sh_dmae_regs hw)
|
|||
{
|
||||
sh_dmae_writel(sh_chan, hw.sar, SAR);
|
||||
sh_dmae_writel(sh_chan, hw.dar, DAR);
|
||||
sh_dmae_writel(sh_chan,
|
||||
(hw.tcr >> calc_xmit_shift(sh_chan)), TCR);
|
||||
sh_dmae_writel(sh_chan, hw.tcr >> calc_xmit_shift(sh_chan), TCR);
|
||||
}
|
||||
|
||||
static void dmae_start(struct sh_dmae_chan *sh_chan)
|
||||
{
|
||||
u32 chcr = sh_dmae_readl(sh_chan, CHCR);
|
||||
|
||||
chcr |= (CHCR_DE|CHCR_IE);
|
||||
chcr |= CHCR_DE | CHCR_IE;
|
||||
sh_dmae_writel(sh_chan, chcr, CHCR);
|
||||
}
|
||||
|
||||
|
|
@ -132,7 +131,7 @@ static void dmae_halt(struct sh_dmae_chan *sh_chan)
|
|||
|
||||
static int dmae_set_chcr(struct sh_dmae_chan *sh_chan, u32 val)
|
||||
{
|
||||
int ret = dmae_is_idle(sh_chan);
|
||||
int ret = dmae_is_busy(sh_chan);
|
||||
/* When DMA was working, can not set data to CHCR */
|
||||
if (ret)
|
||||
return ret;
|
||||
|
|
@ -149,7 +148,7 @@ static int dmae_set_dmars(struct sh_dmae_chan *sh_chan, u16 val)
|
|||
{
|
||||
u32 addr;
|
||||
int shift = 0;
|
||||
int ret = dmae_is_idle(sh_chan);
|
||||
int ret = dmae_is_busy(sh_chan);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
|
|
@ -388,7 +387,7 @@ static void sh_chan_xfer_ld_queue(struct sh_dmae_chan *sh_chan)
|
|||
struct sh_dmae_regs hw;
|
||||
|
||||
/* DMA work check */
|
||||
if (dmae_is_idle(sh_chan))
|
||||
if (dmae_is_busy(sh_chan))
|
||||
return;
|
||||
|
||||
/* Find the first un-transfer desciptor */
|
||||
|
|
@ -497,6 +496,7 @@ static void dmae_do_tasklet(unsigned long data)
|
|||
struct sh_dmae_chan *sh_chan = (struct sh_dmae_chan *)data;
|
||||
struct sh_desc *desc, *_desc, *cur_desc = NULL;
|
||||
u32 sar_buf = sh_dmae_readl(sh_chan, SAR);
|
||||
|
||||
list_for_each_entry_safe(desc, _desc,
|
||||
&sh_chan->ld_queue, node) {
|
||||
if ((desc->hw.sar + desc->hw.tcr) == sar_buf) {
|
||||
|
|
@ -543,8 +543,8 @@ static int __devinit sh_dmae_chan_probe(struct sh_dmae_device *shdev, int id)
|
|||
/* alloc channel */
|
||||
new_sh_chan = kzalloc(sizeof(struct sh_dmae_chan), GFP_KERNEL);
|
||||
if (!new_sh_chan) {
|
||||
dev_err(shdev->common.dev, "No free memory for allocating "
|
||||
"dma channels!\n");
|
||||
dev_err(shdev->common.dev,
|
||||
"No free memory for allocating dma channels!\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
|
|
@ -586,8 +586,8 @@ static int __devinit sh_dmae_chan_probe(struct sh_dmae_device *shdev, int id)
|
|||
"sh-dmae%d", new_sh_chan->id);
|
||||
|
||||
/* set up channel irq */
|
||||
err = request_irq(irq, &sh_dmae_interrupt,
|
||||
irqflags, new_sh_chan->dev_id, new_sh_chan);
|
||||
err = request_irq(irq, &sh_dmae_interrupt, irqflags,
|
||||
new_sh_chan->dev_id, new_sh_chan);
|
||||
if (err) {
|
||||
dev_err(shdev->common.dev, "DMA channel %d request_irq error "
|
||||
"with return %d\n", id, err);
|
||||
|
|
@ -676,6 +676,8 @@ static int __init sh_dmae_probe(struct platform_device *pdev)
|
|||
shdev->common.device_is_tx_complete = sh_dmae_is_complete;
|
||||
shdev->common.device_issue_pending = sh_dmae_memcpy_issue_pending;
|
||||
shdev->common.dev = &pdev->dev;
|
||||
/* Default transfer size of 32 bytes requires 32-byte alignment */
|
||||
shdev->common.copy_align = 5;
|
||||
|
||||
#if defined(CONFIG_CPU_SH4)
|
||||
/* Non Mix IRQ mode SH7722/SH7730 etc... */
|
||||
|
|
@ -688,8 +690,8 @@ static int __init sh_dmae_probe(struct platform_device *pdev)
|
|||
}
|
||||
|
||||
for (ecnt = 0 ; ecnt < ARRAY_SIZE(eirq); ecnt++) {
|
||||
err = request_irq(eirq[ecnt], sh_dmae_err,
|
||||
irqflags, "DMAC Address Error", shdev);
|
||||
err = request_irq(eirq[ecnt], sh_dmae_err, irqflags,
|
||||
"DMAC Address Error", shdev);
|
||||
if (err) {
|
||||
dev_err(&pdev->dev, "DMA device request_irq"
|
||||
"error (irq %d) with return %d\n",
|
||||
|
|
|
|||
|
|
@ -74,7 +74,7 @@ enum dma_transaction_type {
|
|||
* control completion, and communicate status.
|
||||
* @DMA_PREP_INTERRUPT - trigger an interrupt (callback) upon completion of
|
||||
* this transaction
|
||||
* @DMA_CTRL_ACK - the descriptor cannot be reused until the client
|
||||
* @DMA_CTRL_ACK - if clear, the descriptor cannot be reused until the client
|
||||
* acknowledges receipt, i.e. has has a chance to establish any dependency
|
||||
* chains
|
||||
* @DMA_COMPL_SKIP_SRC_UNMAP - set to disable dma-unmapping the source buffer(s)
|
||||
|
|
|
|||
Loading…
Reference in a new issue