diff options
Diffstat (limited to 'cpu/mpc824x/drivers/dma')
| -rw-r--r-- | cpu/mpc824x/drivers/dma/Makefile | 83 | ||||
| -rw-r--r-- | cpu/mpc824x/drivers/dma/Makefile_pc | 89 | ||||
| -rw-r--r-- | cpu/mpc824x/drivers/dma/README | 100 | ||||
| -rw-r--r-- | cpu/mpc824x/drivers/dma/dma.h | 326 | ||||
| -rw-r--r-- | cpu/mpc824x/drivers/dma/dma1.c | 801 | ||||
| -rw-r--r-- | cpu/mpc824x/drivers/dma/dma2.S | 42 | ||||
| -rw-r--r-- | cpu/mpc824x/drivers/dma/dma_export.h | 100 |
7 files changed, 0 insertions, 1541 deletions
diff --git a/cpu/mpc824x/drivers/dma/Makefile b/cpu/mpc824x/drivers/dma/Makefile deleted file mode 100644 index 59e2fac..0000000 --- a/cpu/mpc824x/drivers/dma/Makefile +++ /dev/null @@ -1,83 +0,0 @@ -########################################################################## -# -# Copyright Motorola, Inc. 1997 -# ALL RIGHTS RESERVED -# -# You are hereby granted a copyright license to use, modify, and -# distribute the SOFTWARE so long as this entire notice is retained -# without alteration in any modified and/or redistributed versions, -# and that such modified versions are clearly identified as such. -# No licenses are granted by implication, estoppel or otherwise under -# any patents or trademarks of Motorola, Inc. -# -# The SOFTWARE is provided on an "AS IS" basis and without warranty. -# To the maximum extent permitted by applicable law, MOTOROLA DISCLAIMS -# ALL WARRANTIES WHETHER EXPRESS OR IMPLIED, INCLUDING IMPLIED -# WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR -# PURPOSE AND ANY WARRANTY AGAINST INFRINGEMENT WITH -# REGARD TO THE SOFTWARE (INCLUDING ANY MODIFIED VERSIONS -# THEREOF) AND ANY ACCOMPANYING WRITTEN MATERIALS. -# -# To the maximum extent permitted by applicable law, IN NO EVENT SHALL -# MOTOROLA BE LIABLE FOR ANY DAMAGES WHATSOEVER -# (INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF -# BUSINESS PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS -# INFORMATION, OR OTHER PECUNIARY LOSS) ARISING OF THE USE OR -# INABILITY TO USE THE SOFTWARE. -# -############################################################################ -TARGET = libdma.a - -DEBUG = -DDMADBG -LST = -Hanno -S -OPTIM = -CC = /risc/tools/pkgs/metaware/bin/hcppc -CFLAGS = -Hnocopyr -c -Hsds -Hon=Char_default_unsigned -Hon=Char_is_rep -I../inc -I/risc/tools/pkgs/metaware/inc -CCobj = $(CC) $(CFLAGS) $(DEBUG) $(OPTIM) -PREP = $(CC) $(CFLAGS) -P - -# Assembler used to build the .s files (for the board version) - -ASOPT = -big_si -c -ASDEBUG = -l -fm -AS = /risc/tools/pkgs/metaware/bin/asppc - -# Linker to bring .o files together into an executable. - -LKOPT = -Bbase=0 -q -r -Qn -LKCMD = -LINK = /risc/tools/pkgs/metaware/bin/ldppc $(LKCMD) $(LKOPT) - -# DOS Utilities - -DEL = rm -COPY = cp -LIST = ls - -OBJECTS = dma1.o dma2.o - -all: $(TARGET) - -$(TARGET): $(OBJECTS) - $(LINK) $(OBJECTS) -o $@ - -objects: dma1.o - -clean: - $(DEL) -f *.o *.i *.map *.lst $(TARGET) $(OBJECTS) - -.s.o: - $(DEL) -f $*.i - $(PREP) -Hasmcpp $< - $(AS) $(ASOPT) $*.i -# $(AS) $(ASOPT) $(ASDEBUG) $*.i > $*.lst - -.c.o: - $(CCobj) $< - -.c.s: - $(CCobj) $(LST) $< - -dma1.o: dma_export.h dma.h dma1.c - -dma2.o: dma.h dma2.s diff --git a/cpu/mpc824x/drivers/dma/Makefile_pc b/cpu/mpc824x/drivers/dma/Makefile_pc deleted file mode 100644 index 8df2a3c..0000000 --- a/cpu/mpc824x/drivers/dma/Makefile_pc +++ /dev/null @@ -1,89 +0,0 @@ -########################################################################## -# -# makefile_pc for use with mksnt tools drivers/dma -# -# Copyright Motorola, Inc. 1997 -# ALL RIGHTS RESERVED -# -# You are hereby granted a copyright license to use, modify, and -# distribute the SOFTWARE so long as this entire notice is retained -# without alteration in any modified and/or redistributed versions, -# and that such modified versions are clearly identified as such. -# No licenses are granted by implication, estoppel or otherwise under -# any patents or trademarks of Motorola, Inc. -# -# The SOFTWARE is provided on an "AS IS" basis and without warranty. -# To the maximum extent permitted by applicable law, MOTOROLA DISCLAIMS -# ALL WARRANTIES WHETHER EXPRESS OR IMPLIED, INCLUDING IMPLIED -# WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR -# PURPOSE AND ANY WARRANTY AGAINST INFRINGEMENT WITH -# REGARD TO THE SOFTWARE (INCLUDING ANY MODIFIED VERSIONS -# THEREOF) AND ANY ACCOMPANYING WRITTEN MATERIALS. -# -# To the maximum extent permitted by applicable law, IN NO EVENT SHALL -# MOTOROLA BE LIABLE FOR ANY DAMAGES WHATSOEVER -# (INCLUDING WITHOUT LIMITATION, DAMAGES FOR LOSS OF -# BUSINESS PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS -# INFORMATION, OR OTHER PECUNIARY LOSS) ARISING OF THE USE OR -# INABILITY TO USE THE SOFTWARE. -# -############################################################################ -TARGET = libdma.a - -DEBUG = -DDMADBG -LST = -Hanno -S -OPTIM = -CC = m:/old_tools/tools/hcppc/bin/hcppc -CFLAGS = -Hnocopyr -c -Hsds -Hon=Char_default_unsigned -Hon=Char_is_rep -I../inc -I/risc/tools/pkgs/metaware/inc -CCobj = $(CC) $(CFLAGS) $(DEBUG) $(OPTIM) -PREP = $(CC) $(CFLAGS) -P - -# Assembler used to build the .s files (for the board version) - -ASOPT = -big_si -c -ASDEBUG = -l -fm -AS = m:/old_tools/tools/hcppc/bin/asppc - -# Linker to bring .o files together into an executable. - -LKOPT = -Bbase=0 -q -r -Qn -LKCMD = -LINK = m:/old_tools/tools/hcppc/bin/ldppc $(LKCMD) $(LKOPT) - -# DOS Utilities - -DEL = rm -COPY = cp -LIST = ls - -OBJECTS = dma1.o dma2.o - -all: $(TARGET) - -$(TARGET): $(OBJECTS) - $(LINK) $(OBJECTS) -o $@ - -objects: dma1.o - -clean: - $(DEL) -f *.o *.i *.map *.lst $(TARGET) $(OBJECTS) - -.s.o: - $(DEL) -f $*.i - $(PREP) -Hasmcpp $< - $(AS) $(ASOPT) $*.i -# $(AS) $(ASOPT) $(ASDEBUG) $*.i > $*.lst - -.c.o: - $(CCobj) $< - -.c.s: - $(CCobj) $(LST) $< - -dma1.o: dma_export.h dma.h dma1.c - $(CCobj) $< - -dma2.o: dma.h dma2.s - $(DEL) -f $*.i - $(PREP) -Hasmcpp $< - $(AS) $(ASOPT) $*.i diff --git a/cpu/mpc824x/drivers/dma/README b/cpu/mpc824x/drivers/dma/README deleted file mode 100644 index 06f4bc0..0000000 --- a/cpu/mpc824x/drivers/dma/README +++ /dev/null @@ -1,100 +0,0 @@ -CONTENT: - - dma.h - dma1.c - dma2.s - -WHAT ARE THESE FILES: - -These files contain MPC8240 (Kahlua) DMA controller -driver routines. The driver routines are not -written for any specific operating system. -They serves the purpose of code sample, and -jump-start for using the MPC8240 DMA controller. - -For the reason of correctness of C language -syntax, these files are compiled by Metaware -C compiler and assembler. - -ENDIAN NOTATION: - -The algorithm is designed for big-endian mode, -software is responsible for byte swapping. - -USAGE: - -1. The host system that is running on MPC8240 - or using MPC8240 as I/O device shall link - the files listed here. The memory location - of driver routines shall take into account of - that driver routines need to run in supervisor - mode and they process DMA controller interrupt. - -2. The host system is responsible for configuring - the MPC8240 including Embedded Utilities Memory - Block. Since the DMA controller on MPC8240 can - be accessed by either local 603e core or the host - that MPC8240 serves as I/O processor through host - PCI configuration, it is important that the local - processor uses EUMBBAR to access its local DMA - controller while the PCI master uses I/O - processor's PCSRBAR to access the DMA controller - on I/O device. - - To qualify whether is EUMBBAR or PCSRBAR, one - additional parameter is requied from the host - system, LOCAL or REMOTE so that the base value - can be correctly interpreted. - -3. If the host system is also using the EPIC unit - on MPC8240, the system can register the - DMA_ISR with the EPIC including other - desired resources. - - If the host system does not using the EPIC unit - on MPC8240, DMA_ISR function can be called for - each desired time interval. - - In both cases, the host system is free to - provide its own interrupt service routine. - -4. To start a direct mode DMA transaction, - use DMA_Bld_Curr with the start parameter - set to 1. - - To start a chaining mode DMA transaction, - the application shall build descriptors - in memory first, next, use DMA_Bld_Desp - with the start parameter set to 1. - -5. DMA_Start function clears, then sets the CS - bit of DMA mode register. - - DMA_Halt function clears the CS bit of DMA - mode register. - - These functions can be used to start and - halt the DMA transaction. - - If the chaining descriptors has been - modified since the last time a DMA - transaction started, use DMA_Chn_Cnt - function to let DMA controller process - the modified descriptor chain without - stopping or disturbing the current DMA - transaction. - - It is the host system's responsibility of - setting up the correct DMA transfer mode - and pass the correct memory address parameters. - -6. It is the host system's responsibility of - queueing the DMA I/O request. The host - system can call the DMA_ISR with its own - desired interrupt service subroutines to - handle each individual interrupt and queued - DMA I/O requests. - -7. The DMA driver routines contains a set - of utilities, Set and Get, for host system - to query and modify the desired DMA registers. diff --git a/cpu/mpc824x/drivers/dma/dma.h b/cpu/mpc824x/drivers/dma/dma.h deleted file mode 100644 index a21be74..0000000 --- a/cpu/mpc824x/drivers/dma/dma.h +++ /dev/null @@ -1,326 +0,0 @@ -#ifndef DMA_H -#define DMA_H -/******************************************************* - * - * copyright @ Motorola 1999 - * - *******************************************************/ -#define NUM_DMA_REG 7 -#define DMA_MR_REG 0 -#define DMA_SR_REG 1 -#define DMA_CDAR_REG 2 -#define DMA_SAR_REG 3 -#define DMA_DAR_REG 4 -#define DMA_BCR_REG 5 -#define DMA_NDAR_REG 6 - -typedef enum _dmastatus -{ - DMASUCCESS = 0x1000, - DMALMERROR, - DMAPERROR, - DMACHNBUSY, - DMAEOSINT, - DMAEOCAINT, - DMAINVALID, - DMANOEVENT, -} DMAStatus; - -typedef enum _location -{ - LOCAL = 0, /* local processor accesses on board DMA, - local processor's eumbbar is required */ - REMOTE = 1, /* PCI master accesses DMA on I/O board, - I/O processor's pcsrbar is required */ -} LOCATION; - -typedef enum dma_mr_bit -{ - IRQS = 0x00080000, - PDE = 0x00040000, - DAHTS = 0x00030000, - SAHTS = 0x0000c000, - DAHE = 0x00002000, - SAHE = 0x00001000, - PRC = 0x00000c00, - EIE = 0x00000080, - EOTIE = 0x00000040, - DL = 0x00000008, - CTM = 0x00000004, - CC = 0x00000002, - CS = 0x00000001, -} DMA_MR_BIT; - -typedef enum dma_sr_bit -{ - LME = 0x00000080, - PE = 0x00000010, - CB = 0x00000004, - EOSI = 0x00000002, - EOCAI = 0x00000001, -} DMA_SR_BIT; - -/* structure for DMA Mode Register */ -typedef struct _dma_mr -{ - unsigned int reserved0 : 12; - unsigned int irqs : 1; - unsigned int pde : 1; - unsigned int dahts : 2; - unsigned int sahts : 2; - unsigned int dahe : 1; - unsigned int sahe : 1; - unsigned int prc : 2; - unsigned int reserved1 : 1; - unsigned int eie : 1; - unsigned int eotie : 1; - unsigned int reserved2 : 3; - unsigned int dl : 1; - unsigned int ctm : 1; - /* if chaining mode is enabled, any time, user can modify the - * descriptor and does not need to halt the current DMA transaction. - * Set CC bit, enable DMA to process the modified descriptors - * Hardware will clear this bit each time, DMA starts. - */ - unsigned int cc : 1; - /* cs bit has dua role, halt the current DMA transaction and - * (re)start DMA transaction. In chaining mode, if the descriptor - * needs modification, cs bit shall be used not the cc bit. - * Hardware will not set/clear this bit each time DMA transaction - * stops or starts. Software shall do it. - * - * cs bit shall not be used to halt chaining DMA transaction for - * modifying the descriptor. That is the role of CC bit. - */ - unsigned int cs : 1; -} DMA_MR; - -/* structure for DMA Status register */ -typedef struct _dma_sr -{ - unsigned int reserved0 : 24; - unsigned int lme : 1; - unsigned int reserved1 : 2; - unsigned int pe : 1; - unsigned int reserved2 : 1; - unsigned int cb : 1; - unsigned int eosi : 1; - unsigned int eocai : 1; -} DMA_SR; - -/* structure for DMA current descriptor address register */ -typedef struct _dma_cdar -{ - unsigned int cda : 27; - unsigned int snen : 1; - unsigned int eosie : 1; - unsigned int ctt : 2; - unsigned int eotd : 1; -} DMA_CDAR; - -/* structure for DMA byte count register */ -typedef struct _dma_bcr -{ - unsigned int reserved : 6; - unsigned int bcr : 26; -} DMA_BCR; - -/* structure for DMA Next Descriptor Address register */ -typedef struct _dma_ndar -{ - unsigned int nda : 27; - unsigned int ndsnen : 1; - unsigned int ndeosie: 1; - unsigned int ndctt : 2; - unsigned int eotd : 1; -} DMA_NDAR; - -/* structure for DMA current transaction info */ -typedef struct _dma_curr -{ - unsigned int src_addr; - unsigned int dest_addr; - unsigned int byte_cnt; -} DMA_CURR; - -/************************* Kernel API******************** - * Kernel APIs are used to interface with O.S. kernel. - * They are the functions required by O.S. kernel to - * provide I/O service. - ********************************************************/ - -/**************DMA Device Control Functions ********/ - -/** - * Note: - * - * In all following functions, the host (KAHLUA) processor has a - * choice of accessing on board local DMA (LOCAL), - * or DMA on a distributed KAHLUA (REMOTE). In either case, - * the caller shall pass the configured embedded utility memory - * block base address relative to the DMA. If LOCAL DMA is used, - * this parameter shall be EUMBBAR, if REMOTE is used, the - * parameter shall be the corresponding PCSRBAR. - **/ - -/************************************************************** - * function: DMA_Get_Stat - * - * description: return the content of status register of - * the given DMA channel - * if error, return DMAINVALID. Otherwise return - * DMASUCCESS. - * - **************************************************************/ -static DMAStatus DMA_Get_Stat( LOCATION, unsigned int eumbbar, unsigned int channel, DMA_SR * ); - -/************************************************************** - * function: DMA_Get_Mode - * - * description: return the content of mode register of the - * given DMA channel - * if error, return DMAINVALID. Otherwise return DMASUCCESS. - * - **************************************************************/ -static DMAStatus DMA_Get_Mode( LOCATION, unsigned int eumbbar, unsigned int channel, DMA_MR * ); - -/************************************************************** - * function: DMA_Set_Mode - * - * description: Set a new mode to a given DMA channel - * return DMASUCCESS if success, otherwise return DMACHNINVALID - * - * note: It is not a good idea of changing the DMA mode during - * the middle of a transaction. - **************************************************************/ -static DMAStatus DMA_Set_Mode( LOCATION, unsigned int eumbbar, unsigned int channel, DMA_MR mode ); - -/************************************************************* - * function: DMA_ISR - * - * description: DMA interrupt service routine - * return DMAStatus based on the status - * - *************************************************************/ -static DMAStatus DMA_ISR( unsigned int eumbbar, - unsigned int channel, - DMAStatus (*lme_func)( unsigned int, unsigned int, DMAStatus ), - DMAStatus (*pe_func) ( unsigned int, unsigned int, DMAStatus ), - DMAStatus (*eosi_func)( unsigned int, unsigned int, DMAStatus ), - DMAStatus (*eocai_func)(unsigned int, unsigned int, DMAStatus )); - -static DMAStatus dma_error_func( unsigned int, unsigned int, DMAStatus ); - -/********************* DMA I/O function ********************/ - -/************************************************************ - * function: DMA_Start - * - * description: start a given DMA channel transaction - * return DMASUCCESS if success, otherwise return DMACHNINVALID - * - * note: this function will clear DMA_MR(CC) first, then - * set DMA_MR(CC). - ***********************************************************/ -static DMAStatus DMA_Start( LOCATION, unsigned int eumbbar,unsigned int channel ); - -/*********************************************************** - * function: DMA_Halt - * - * description: halt the current dma transaction on the specified - * channel. - * return DMASUCCESS if success, otherwise return DMACHNINVALID - * - * note: if the specified DMA channel is idle, nothing happens - *************************************************************/ -static DMAStatus DMA_Halt( LOCATION, unsigned int eumbbar,unsigned int channel ); - -/************************************************************* - * function: DMA_Chn_Cnt - * - * description: set the DMA_MR(CC) bit for a given channel - * that is in chaining mode. - * return DMASUCCESS if successfule, otherwise return DMACHNINVALID - * - * note: if the given channel is not in chaining mode, nothing - * happen. - * - *************************************************************/ -static DMAStatus DMA_Chn_Cnt( LOCATION, unsigned int eumbbar,unsigned int channel ); - -/*********************** App. API *************************** - * App. API are the APIs Kernel provides for the application - * level program - ************************************************************/ -/************************************************************** - * function: DMA_Bld_Curr - * - * description: set current src, dest, byte count registers - * according to the desp for a given channel - * - * if the given channel is busy, no change made, - * return DMACHNBUSY. - * - * otherwise return DMASUCCESS. - * - * note: - **************************************************************/ -static DMAStatus DMA_Bld_Curr( LOCATION, - unsigned int eumbbar, - unsigned int channel, - DMA_CURR desp ); - -/************************************************************** - * function: DMA_Poke_Curr - * - * description: poke the current src, dest, byte count registers - * for a given channel. - * - * return DMASUCCESS if no error otherwise return DMACHNERROR - * - * note: Due to the undeterministic parallelism, in chaining - * mode, the value returned by this function shall - * be taken as reference when the query is made rather - * than the absolute snapshot when the value is returned. - **************************************************************/ -static DMAStatus DMA_Poke_Curr( LOCATION, - unsigned int eumbbar, - unsigned int channel, - DMA_CURR* desp ); - -/************************************************************** - * function: DMA_Bld_Desp - * - * description: set current descriptor address register - * according to the desp for a given channel - * - * if the given channel is busy return DMACHNBUSY - * and no change made, otherwise return DMASUCCESS. - * - * note: - **************************************************************/ -static DMAStatus DMA_Bld_Desp( LOCATION host, - unsigned int eumbbar, - unsigned int channel, - DMA_CDAR desp ); - -/************************************************************** - * function: DMA_Poke_Desp - * - * description: poke the current descriptor address register - * for a given channel - * - * return DMASUCCESS if no error otherwise return - * DMAINVALID - * - * note: Due to the undeterministic parallellism of DMA operation, - * the value returned by this function shall be taken as - * the most recently used descriptor when the last time - * DMA starts a chaining mode operation. - **************************************************************/ -static DMAStatus DMA_Poke_Desp( LOCATION, - unsigned int eumbbar, - unsigned int channel, - DMA_CDAR *desp ); - -#endif diff --git a/cpu/mpc824x/drivers/dma/dma1.c b/cpu/mpc824x/drivers/dma/dma1.c deleted file mode 100644 index 9c85267..0000000 --- a/cpu/mpc824x/drivers/dma/dma1.c +++ /dev/null @@ -1,801 +0,0 @@ -/************************************************************ - * - * copyright @ Motorola, 1999 - * - * App. API - * - * App. API are the APIs Kernel provides for the application - * level program - * - ************************************************************/ -#include "dma_export.h" -#include "dma.h" - -/* Define a macro to use an optional application-layer print function, if - * one was passed to the library during initialization. If there was no - * function pointer passed, this protects against referencing a NULL pointer. - * Also define The global variable that holds the passed pointer. - */ -#define PRINT if ( app_print ) app_print -static int (*app_print)(char *,...); - -/* Set by call to get_eumbbar during DMA_Initialize. - * This could be globally available to the library, but there is - * an advantage to passing it as a parameter: it is already in a register - * and doesn't have to be loaded from memory. Also, that is the way the - * library was already implemented and I don't want to change it without - * a more detailed analysis. - * It is being set as a global variable during initialization to hide it from - * the DINK application layer, because it is Kahlua-specific. I think that - * get_eumbbar, load_runtime_reg, and store_runtime_reg should be defined in - * a Kahlua-specific library dealing with the embedded utilities memory block. - * Right now, get_eumbbar is defined in dink32/kahlua.s. The other two are - * defined in dink32/drivers/i2c/i2c2.s, drivers/dma/dma2.s, etc. - */ -static unsigned int Global_eumbbar = 0; -extern unsigned int get_eumbbar(); - - -extern unsigned int load_runtime_reg( unsigned int eumbbar, unsigned int reg ); -#pragma Alias( load_runtime_reg, "load_runtime_reg" ); - -extern void store_runtime_reg( unsigned int eumbbar, unsigned int reg, unsigned int val ); -#pragma Alias( store_runtime_reg, "store_runtime_reg" ); - -unsigned int dma_reg_tb[][14] = { - /* local DMA registers */ - { - /* DMA_0_MR */ 0x00001100, - /* DMA_0_SR */ 0x00001104, - /* DMA_0_CDAR */ 0x00001108, - /* DMA_0_SAR */ 0x00001110, - /* DMA_0_DAR */ 0x00001118, - /* DMA_0_BCR */ 0x00001120, - /* DMA_0_NDAR */ 0x00001124, - /* DMA_1_MR */ 0x00001200, - /* DMA_1_SR */ 0x00001204, - /* DMA_1_CDAR */ 0x00001208, - /* DMA_1_SAR */ 0x00001210, - /* DMA_1_DAR */ 0x00001218, - /* DMA_1_BCR */ 0x00001220, - /* DMA_1_NDAR */ 0x00001224, - }, - /* remote DMA registers */ - { - /* DMA_0_MR */ 0x00000100, - /* DMA_0_SR */ 0x00000104, - /* DMA_0_CDAR */ 0x00000108, - /* DMA_0_SAR */ 0x00000110, - /* DMA_0_DAR */ 0x00000118, - /* DMA_0_BCR */ 0x00000120, - /* DMA_0_NDAR */ 0x00000124, - /* DMA_1_MR */ 0x00000200, - /* DMA_1_SR */ 0x00000204, - /* DMA_1_CDAR */ 0x00000208, - /* DMA_1_SAR */ 0x00000210, - /* DMA_1_DAR */ 0x00000218, - /* DMA_1_BCR */ 0x00000220, - /* DMA_1_NDAR */ 0x00000224, - }, -}; - -/* API functions */ - -/* Initialize DMA unit with the following: - * optional pointer to application layer print function - * - * These parameters may be added: - * ??? - * Interrupt enables, modes, etc. are set for each transfer. - * - * This function must be called before DMA unit can be used. - */ -extern -DMA_Status DMA_Initialize( int (*p)(char *,...)) -{ - DMAStatus status; - /* establish the pointer, if there is one, to the application's "printf" */ - app_print = p; - - /* If this is the first call, get the embedded utilities memory block - * base address. I'm not sure what to do about error handling here: - * if a non-zero value is returned, accept it. - */ - if ( Global_eumbbar == 0) - Global_eumbbar = get_eumbbar(); - if ( Global_eumbbar == 0) - { - PRINT( "DMA_Initialize: can't find EUMBBAR\n" ); - return DMA_ERROR; - } - - return DMA_SUCCESS; -} - - -/* Perform the DMA transfer, only direct mode is currently implemented. - * At this point, I think it would be better to define a different - * function for chaining mode. - * Also, I'm not sure if it is appropriate to have the "generic" API - * accept snoop and int_steer parameters. The DINK user interface allows - * them, so for now I'll leave them. - * - * int_steer controls DMA interrupt steering to PCI or local processor - * type is the type of transfer: M2M, M2P, P2M, P2P - * source is the source address of the data - * dest is the destination address of the data - * len is the length of data to transfer - * channel is the DMA channel to use for the transfer - * snoop is the snoop enable control - */ -extern DMA_Status DMA_direct_transfer( DMA_INTERRUPT_STEER int_steer, - DMA_TRANSFER_TYPE type, - unsigned int source, - unsigned int dest, - unsigned int len, - DMA_CHANNEL channel, - DMA_SNOOP_MODE snoop) -{ - DMA_MR md; - DMA_CDAR cdar; - /* it's inappropriate for curr to be a struct, but I'll leave it */ - DMA_CURR curr; - - DMAStatus stat; - - /* The rest of this code was moved from device.c test_dma to here. - * It needs to be cleaned up and validated, but at least it is removed - * from the application and API. Most of the mode is left hard coded. - * This should be changed after the final API is defined and the user - * application has a way to control the transfer. - * - */ - - if ( DMA_Get_Mode( LOCAL, Global_eumbbar, channel, &md ) != DMASUCCESS ) - { - return DMA_ERROR; - } - - md.irqs = int_steer; - md.pde = 0; - md.dahts = 3; /* 8 - byte */ - md.sahts = 3; /* 8 - byte */ - md.dahe = 0; - md.sahe = 0; - md.prc = 0; - /* if steering interrupts to local processor, use polling mode */ - if ( int_steer == DMA_INT_STEER_PCI ) - { - md.eie = 1; - md.eotie = 1; - } else { - md.eie = 0; - md.eotie = 0; - } - md.dl = 0; - md.ctm = 1; /* direct mode */ - md.cc = 0; - - /* validate the length range */ - if (len > 0x3ffffff ) - { - PRINT( "dev DMA: length of transfer too large: %d\n", len ); - return DMA_ERROR; - } - - /* inappropriate to use a struct, but leave as is for now */ - curr.src_addr = source; - curr.dest_addr = dest; - curr.byte_cnt = len; - - (void)DMA_Poke_Desp( LOCAL, Global_eumbbar, channel, &cdar ); - cdar.snen = snoop; - cdar.ctt = type; - - if ( ( stat = DMA_Bld_Desp( LOCAL, Global_eumbbar, channel, cdar )) - != DMASUCCESS || - ( stat = DMA_Bld_Curr( LOCAL, Global_eumbbar, channel, curr )) - != DMASUCCESS || - ( stat = DMA_Set_Mode( LOCAL, Global_eumbbar, channel, md )) - != DMASUCCESS || - ( stat = DMA_Start( LOCAL, Global_eumbbar, channel )) - != DMASUCCESS ) - { - if ( stat == DMACHNBUSY ) - { - PRINT( "dev DMA: channel %d busy.\n", channel ); - } - else - { - PRINT( "dev DMA: invalid channel request.\n", channel ); - } - - return DMA_ERROR; - } - -/* Since we are interested at the DMA performace right now, - we are going to do as less as possible to burden the - 603e core. - - if you have epic enabled or don't care the return from - DMA operation, you can just return SUCCESS. - - if you don't have epic enabled and care the DMA result, - you can use the polling method below. - - Note: I'll attempt to activate the code for handling polling. - */ - -#if 0 - /* if steering interrupt to local processor, let it handle results */ - if ( int_steer == DMA_INT_STEER_LOCAL ) - { - return DMA_SUCCESS; - } - - /* polling since interrupt goes to PCI */ - do - { - stat = DMA_ISR( Global_eumbbar, channel, dma_error_func, - dma_error_func, dma_error_func, dma_error_func ); - } - while ( stat == DMANOEVENT ); -#endif - - return DMA_SUCCESS; -} - -/* DMA library internal functions */ - -/** - * Note: - * - * In all following functions, the host (KAHLUA) processor has a - * choice of accessing on board local DMA (LOCAL), - * or DMA on a distributed KAHLUA (REMOTE). In either case, - * the caller shall pass the configured embedded utility memory - * block base address relative to the DMA. If LOCAL DMA is used, - * this parameter shall be EUMBBAR, if REMOTE is used, the - * parameter shall be the corresponding PCSRBAR. - **/ - -/************************************************************** - * function: DMA_Get_Stat - * - * description: return the content of status register of - * the given DMA channel - * - * if error, reserved0 field all 1s. - **************************************************************/ -static -DMAStatus DMA_Get_Stat( LOCATION host, unsigned int eumbbar, unsigned int channel, DMA_SR *stat ) -{ - unsigned int tmp; - - if ( channel != 0 && channel != 1 || stat == 0 ) - { - return DMAINVALID; - } - - tmp = load_runtime_reg( eumbbar, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_SR_REG] ); -#ifdef DMADBG0 - PRINT( "%s(%d): %s DMA %d (0x%08x) stat = 0x%08x\n", __FILE__, __LINE__, - ( host == LOCAL ? "local" : "remote" ), channel, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_SR_REG], tmp ); -#endif - - stat->reserved0 = ( tmp & 0xffffff00 ) >> 8; - stat->lme = ( tmp & 0x00000080 ) >> 7; - stat->reserved1 = ( tmp & 0x00000060 ) >> 5; - stat->pe = ( tmp & 0x00000010 ) >> 4; - stat->reserved2 = ( tmp & 0x00000008 ) >> 3; - stat->cb = ( tmp & 0x00000004 ) >> 2; - stat->eosi = ( tmp & 0x00000002 ) >> 1; - stat->eocai = ( tmp & 0x00000001 ); - - return DMASUCCESS; -} - -/************************************************************** - * function: DMA_Get_Mode - * - * description: return the content of mode register of the - * given DMA channel - * - * if error, return DMAINVALID, otherwise return - * DMASUCCESS - **************************************************************/ -static -DMAStatus DMA_Get_Mode( LOCATION host, unsigned eumbbar, unsigned int channel, DMA_MR *mode ) -{ - unsigned int tmp; - if ( channel != 0 && channel != 1 || mode == 0 ) - { - return DMAINVALID; - } - - tmp = load_runtime_reg( eumbbar, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_MR_REG] ); - -#ifdef DMADBG0 - PRINT( "%s(%d): %s DMA %d (0x%08x) mode = 0x%08x\n", __FILE__, __LINE__, - ( host == LOCAL ? "local" : "remote" ), channel, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_MR_REG], tmp ); -#endif - - mode->reserved0 = (tmp & 0xfff00000) >> 20; - mode->irqs = (tmp & 0x00080000) >> 19; - mode->pde = (tmp & 0x00040000) >> 18; - mode->dahts = (tmp & 0x00030000) >> 16; - mode->sahts = (tmp & 0x0000c000) >> 14; - mode->dahe = (tmp & 0x00002000) >> 13; - mode->sahe = (tmp & 0x00001000) >> 12; - mode->prc = (tmp & 0x00000c00) >> 10; - mode->reserved1 = (tmp & 0x00000200) >> 9; - mode->eie = (tmp & 0x00000100) >> 8; - mode->eotie = (tmp & 0x00000080) >> 7; - mode->reserved2 = (tmp & 0x00000070) >> 4; - mode->dl = (tmp & 0x00000008) >> 3; - mode->ctm = (tmp & 0x00000004) >> 2; - mode->cc = (tmp & 0x00000002) >> 1; - mode->cs = (tmp & 0x00000001); - - return DMASUCCESS; -} - -/************************************************************** - * function: DMA_Set_Mode - * - * description: Set a new mode to a given DMA channel - * - * note: It is not a good idea of changing the DMA mode during - * the middle of a transaction. - **************************************************************/ -static -DMAStatus DMA_Set_Mode( LOCATION host, unsigned eumbbar, unsigned int channel, DMA_MR mode ) -{ - unsigned int tmp; - if ( channel != 0 && channel != 1 ) - { - return DMAINVALID; - } - - tmp = ( mode.reserved0 & 0xfff ) << 20; - tmp |= ( ( mode.irqs & 0x1 ) << 19); - tmp |= ( ( mode.pde & 0x1 ) << 18 ); - tmp |= ( ( mode.dahts & 0x3 ) << 16 ); - tmp |= ( ( mode.sahts & 0x3 ) << 14 ); - tmp |= ( ( mode.dahe & 0x1 ) << 13 ); - tmp |= ( ( mode.sahe & 0x1 ) << 12 ); - tmp |= ( ( mode.prc & 0x3 ) << 10 ); - tmp |= ( ( mode.reserved1 & 0x1 ) << 9 ); - tmp |= ( ( mode.eie & 0x1 ) << 8 ); - tmp |= ( ( mode.eotie & 0x1 ) << 7 ); - tmp |= ( ( mode.reserved2 & 0x7 ) << 4 ); - tmp |= ( ( mode.dl & 0x1 ) << 3 ); - tmp |= ( ( mode.ctm & 0x1 ) << 2 ); - tmp |= ( ( mode.cc & 0x1 ) << 1 ) ; - tmp |= ( mode.cs & 0x1 ); - - store_runtime_reg( eumbbar, dma_reg_tb[host][channel*NUM_DMA_REG + DMA_MR_REG], tmp ); - return DMASUCCESS; -} - -/************************************************************ - * function: DMA_Start - * - * description: start a given DMA channel transaction - * return DMASUCCESS if success otherwise return - * DMAStatus value - * - * note: this function will clear DMA_MR(CC) first, then - * set DMA_MR(CC). - ***********************************************************/ -static -DMAStatus DMA_Start( LOCATION host, unsigned int eumbbar, unsigned int channel ) -{ - DMA_SR stat; - unsigned int mode; - - if ( channel != 0 && channel != 1 ) - { - return DMAINVALID; - } - - if ( DMA_Get_Stat( host, eumbbar, channel, &stat ) != DMASUCCESS ) - { - return DMAINVALID; - } - - if ( stat.cb == 1 ) - { - /* DMA is not free */ - return DMACHNBUSY; - } - - mode = load_runtime_reg( eumbbar, dma_reg_tb[host][channel*NUM_DMA_REG + DMA_MR_REG] ); - /* clear DMA_MR(CS) */ - mode &= 0xfffffffe; - store_runtime_reg( eumbbar, dma_reg_tb[host][channel*NUM_DMA_REG + DMA_MR_REG], mode ); - - /* set DMA_MR(CS) */ - mode |= CS; - store_runtime_reg( eumbbar, dma_reg_tb[host][channel*NUM_DMA_REG + DMA_MR_REG], mode ); - return DMASUCCESS; -} - -/*********************************************************** - * function: DMA_Halt - * - * description: halt the current dma transaction on the specified - * channel. - * return DMASUCCESS if success otherwise return DMAINVALID - * - * note: if the specified DMA channel is idle, nothing happens - *************************************************************/ -static -DMAStatus DMA_Halt( LOCATION host, unsigned int eumbbar, unsigned int channel ) -{ - unsigned int mode; - if ( channel != 0 && channel != 1 ) - { - return DMAINVALID; - } - - mode = load_runtime_reg( eumbbar, dma_reg_tb[host][channel*NUM_DMA_REG + DMA_MR_REG]); - - /* clear DMA_MR(CS) */ - mode &= 0xfffffffe; - store_runtime_reg(eumbbar, dma_reg_tb[host][channel*NUM_DMA_REG + DMA_MR_REG], mode ); - return DMASUCCESS; -} - -/************************************************************* - * function: DMA_Chn_Cnt - * - * description: set the DMA_MR(CC) bit for a given channel - * that is in chaining mode. - * return DMASUCCESS if successfule, otherwise return - * DMAINVALID. - * - * note: if the given channel is not in chaining mode, nothing - * happen. - * - *************************************************************/ -static -DMAStatus DMA_Chn_Cnt( LOCATION host, unsigned int eumbbar, unsigned int channel ) -{ - DMA_MR mode; - if ( channel != 0 && channel != 1 ) - { - return DMAINVALID; - } - - if ( DMA_Get_Mode( host, eumbbar, channel, &mode ) != DMASUCCESS ) - { - return DMAINVALID; - } - - if ( mode.ctm == 0 ) - { - /* either illegal mode or not chaining mode */ - return DMAINVALID; - } - - mode.cc = 1; - return DMA_Set_Mode( host, eumbbar, channel, mode ); -} - -/************************************************************** - * function: DMA_Bld_Desp - * - * description: set current descriptor address register - * according to the desp for a given channel - * - * if the given channel is busy return DMACHNBUSY - * and no change made, otherwise return DMASUCCESS. - * - * note: - **************************************************************/ -static -DMAStatus DMA_Bld_Desp( LOCATION host, - unsigned int eumbbar, - unsigned int channel, - DMA_CDAR desp ) -{ - DMA_SR status; - unsigned int temp; - - if ( channel != 0 && channel != 1 ) - { - /* channel number out of range */ - return DMAINVALID; - } - - if ( DMA_Get_Stat( host, eumbbar, channel, &status ) != DMASUCCESS ) - { - return DMAINVALID; - } - - if ( status.cb == 1 ) - { - /* channel busy */ - return DMACHNBUSY; - } - - temp = ( desp.cda & 0x7ffffff ) << 5; - temp |= (( desp.snen & 0x1 ) << 4 ); - temp |= (( desp.eosie & 0x1 ) << 3 ); - temp |= (( desp.ctt & 0x3 ) << 1 ); - temp |= ( desp.eotd & 0x1 ); - - store_runtime_reg( eumbbar, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_CDAR_REG], temp ); - -#ifdef DMADBG0 - PRINT( "%s(%d): %s DMA %d (0x%08x) cdar := 0x%08x\n", __FILE__, __LINE__, - ( host == LOCAL ? "local" : "remote" ), channel, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_CDAR_REG], temp ); -#endif - - return DMASUCCESS; -} - -/************************************************************** - * function: DMA_Poke_Desp - * - * description: poke the current descriptor address register - * for a given channel - * - * return DMASUCCESS if no error - * - * note: Due to the undeterministic parallellism of DMA operation, - * the value returned by this function shall be taken as - * the most recently used descriptor when the last time - * DMA starts a chaining mode operation. - **************************************************************/ -static -DMAStatus DMA_Poke_Desp( LOCATION host, - unsigned int eumbbar, - unsigned int channel, - DMA_CDAR *desp ) -{ - unsigned int cdar; - if ( channel != 0 && channel != 1 || desp == 0 ) - { - return DMAINVALID; - } - - cdar = load_runtime_reg( eumbbar, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_CDAR_REG] ); - -#ifdef DMADBG0 - PRINT( "%s(%d): %s DMA %d (0x%08x) cdar : 0x%08x\n", __FILE__, __LINE__, - ( host == LOCAL ? "local" : "remote" ), channel, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_CDAR_REG], cdar ); -#endif - - - desp->cda = ( cdar & 0xffffffe0 ) >> 5; - desp->snen = ( cdar & 0x00000010 ) >> 4; - desp->eosie = ( cdar & 0x00000008 ) >> 3; - desp->ctt = ( cdar & 0x00000006 ) >> 1; - desp->eotd = ( cdar & 0x00000001 ); - - return DMASUCCESS; -} - -/************************************************************** - * function: DMA_Bld_Curr - * - * description: set current src, dest, byte count registers - * according to the desp for a given channel - * return DMASUCCESS if no error. - * - * note: - **************************************************************/ -static -DMAStatus DMA_Bld_Curr( LOCATION host, - unsigned int eumbbar, - unsigned int channel, - DMA_CURR desp ) -{ - DMA_SR status; - if ( channel != 0 && channel != 1 ) - { - /* channel number out of range */ - return DMAINVALID; - } - - if ( DMA_Get_Stat( host, eumbbar, channel, &status ) != DMASUCCESS ) - { - return DMAINVALID; - } - - if ( status.cb == 1 ) - { - /* channel busy */ - return DMACHNBUSY; - } - - desp.byte_cnt &= 0x03ffffff; /* upper 6-bits are 0s */ - - store_runtime_reg( eumbbar, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_SAR_REG], desp.src_addr ); -#ifdef DMADBG0 - PRINT( "%s(%d): %s DMA %d (0x%08x) src := 0x%08x\n", __FILE__, __LINE__, - ( host == LOCAL ? "local" : "remote" ), channel, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_CDAR_REG], desp.src_addr ); -#endif - - store_runtime_reg( eumbbar, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_DAR_REG], desp.dest_addr ); -#ifdef DMADBG0 - PRINT( "%s(%d): %s DMA %d (0x%08x) dest := 0x%08x\n", __FILE__, __LINE__, - ( host == LOCAL ? "local" : "remote" ), channel, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_CDAR_REG], desp.dest_addr ); -#endif - - store_runtime_reg( eumbbar, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_BCR_REG], desp.byte_cnt ); -#ifdef DMADBG0 - PRINT( "%s(%d): %s DMA %d (0x%08x) count := 0x%08x\n", __FILE__, __LINE__, - ( host == LOCAL ? "local" : "remote" ), channel, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_CDAR_REG], desp.byte_cnt ); -#endif - - - return DMASUCCESS; - -} - -/************************************************************** - * function: DMA_Poke_Curr - * - * description: poke the current src, dest, byte count registers - * for a given channel. - * - * return DMASUCCESS if no error - * - * note: Due to the undeterministic parallelism, in chaining - * mode, the value returned by this function shall - * be taken as reference when the query is made rather - * than the absolute snapshot when the value is returned. - **************************************************************/ -static -DMAStatus DMA_Poke_Curr( LOCATION host, - unsigned int eumbbar, - unsigned int channel, - DMA_CURR* desp ) -{ - if ( channel != 0 && channel != 1 || desp == 0 ) - { - return DMAINVALID; - } - - desp->src_addr = load_runtime_reg( eumbbar, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_SAR_REG] ); -#ifdef DMADBG0 - PRINT( "%s(%d): %s DMA %d (0x%08x) src : 0x%08x\n", __FILE__, __LINE__, - ( host == LOCAL ? "local" : "remote" ), channel, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_CDAR_REG], desp->src_addr ); -#endif - - desp->dest_addr = load_runtime_reg( eumbbar, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_DAR_REG] ); -#ifdef DMADBG0 - PRINT( "%s(%d): %s DMA %d (0x%08x) dest : 0x%08x\n", __FILE__, __LINE__, - ( host == LOCAL ? "local" : "remote" ), channel, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_CDAR_REG], desp->dest_addr ); -#endif - - desp->byte_cnt = load_runtime_reg( eumbbar, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_BCR_REG] ); -#ifdef DMADBG0 - PRINT( "%s(%d): %s DMA %d (0x%08x) count : 0x%08x\n", __FILE__, __LINE__, - ( host == LOCAL ? "local" : "remote" ), channel, dma_reg_tb[host][channel*NUM_DMA_REG+DMA_CDAR_REG], desp->byte_cnt ); -#endif - - - return DMASUCCESS; -} - -/***************************************************************** - * function: dma_error_func - * - * description: display the error information - * - * note: This seems like a highly convoluted way to handle messages, - * but I'll leave it as it was in device.c when I moved it into the - * DMA library source. - ****************************************************************/ -static -DMAStatus dma_error_func( unsigned int eumbbar, unsigned int chn, DMAStatus err) -{ - unsigned char *msg[] = - { - "Local Memory Error", - "PCI Error", - "Channel Busy", - "End-of-Segment Interrupt", - "End-of-Chain/Direct Interrupt", - }; - - if ( err >= DMALMERROR && err <= DMAEOCAINT ) - { - PRINT( "DMA Status: channel %d %s\n", chn, msg[err-DMASUCCESS-1] ); - } - - return err; - -} - -/************************************************************* - * function: DMA_ISR - * - * description: DMA interrupt service routine - * return DMAStatus value based on - * the status - * - *************************************************************/ -static -DMAStatus DMA_ISR( unsigned int eumbbar, - unsigned int channel, - DMAStatus (*lme_func)( unsigned int, unsigned int, DMAStatus ), - DMAStatus (*pe_func) ( unsigned int, unsigned int, DMAStatus ), - DMAStatus (*eosi_func)( unsigned int, unsigned int, DMAStatus ), - DMAStatus (*eocai_func)(unsigned int, unsigned int, DMAStatus )) -{ - - DMA_SR stat; - DMAStatus rval = DMANOEVENT; - unsigned int temp; - - if ( channel != 0 && channel != 1 ) - { - return DMAINVALID; - } - - if ( DMA_Get_Stat( LOCAL, eumbbar, channel, &stat ) != DMASUCCESS ) - { - return DMAINVALID; - } - - if ( stat.lme == 1 ) - { - /* local memory error */ - rval = DMALMERROR; - if ( lme_func != 0 ) - { - rval = (*lme_func)(eumbbar, channel, DMALMERROR ); - } - - } - else if ( stat.pe == 1 ) - { - /* PCI error */ - rval = DMAPERROR; - if ( pe_func != 0 ) - { - rval = (*pe_func)(eumbbar, channel, DMAPERROR ); - } - - } - else if ( stat.eosi == 1 ) - { - /* end-of-segment interrupt */ - rval = DMAEOSINT; - if ( eosi_func != 0 ) - { - rval = (*eosi_func)(eumbbar, channel, DMAEOSINT ); - } - } - else - { - /* End-of-chain/direct interrupt */ - rval = DMAEOCAINT; - if ( eocai_func != 0 ) - { - rval = (*eocai_func)(eumbbar, channel, DMAEOCAINT ); - } - } - - temp = ( stat.reserved0 & 0xffffff ) << 8; - temp |= ( ( stat.lme & 0x1 ) << 7 ); /* write one to clear */ - temp |= ( ( stat.reserved1 & 0x3 ) << 5 ); - temp |= ( ( stat.pe & 0x1 ) << 4 ); /* write one to clear */ - temp |= ( ( stat.reserved2 & 0x1 ) << 3 ); - temp |= ( ( stat.cb & 0x1 ) << 2 ); /* write one to clear */ - temp |= ( ( stat.eosi & 0x1 ) << 1 ); /* write one to clear */ - temp |= ( stat.eocai & 0x1 ); /* write one to clear */ - - store_runtime_reg( eumbbar, dma_reg_tb[LOCAL][channel*NUM_DMA_REG + DMA_SR_REG], temp ); - -#ifdef DMADBG0 - PRINT( "%s(%d): DMA channel %d SR := 0x%08x\n", __FILE__, __LINE__, channel, temp ); -#endif - - return rval; -} diff --git a/cpu/mpc824x/drivers/dma/dma2.S b/cpu/mpc824x/drivers/dma/dma2.S deleted file mode 100644 index ccbc226..0000000 --- a/cpu/mpc824x/drivers/dma/dma2.S +++ /dev/null @@ -1,42 +0,0 @@ -/************************************** - * - * copyright @ Motorola, 1999 - * - **************************************/ - -/********************************************************** - * function: load_runtime_reg - * - * input: r3 - value of eumbbar - * r4 - register offset in embedded utility space - * - * output: r3 - register content - **********************************************************/ - .text - .align 2 - .global load_runtime_reg - -load_runtime_reg: - - lwbrx r3,r4,r3 - sync - - bclr 20, 0 - -/**************************************************************** - * function: store_runtime_reg - * - * input: r3 - value of eumbbar - * r4 - register offset in embedded utility space - * r5 - new value to be stored - * - ****************************************************************/ - .text - .align 2 - .global store_runtime_reg -store_runtime_reg: - - stwbrx r5, r4, r3 - sync - - bclr 20,0 diff --git a/cpu/mpc824x/drivers/dma/dma_export.h b/cpu/mpc824x/drivers/dma/dma_export.h deleted file mode 100644 index 471e488..0000000 --- a/cpu/mpc824x/drivers/dma/dma_export.h +++ /dev/null @@ -1,100 +0,0 @@ -#ifndef DMA_EXPORT_H -#define DMA_EXPORT_H - -/**************************************************** - * $Id: - * - * Copyright Motorola 1999 - * - * $Log: - * - ****************************************************/ - -/* These are the defined return values for the DMA_* functions. - * Any non-zero value indicates failure. Failure modes can be added for - * more detailed error reporting. - */ -typedef enum _dma_status -{ - DMA_SUCCESS = 0, - DMA_ERROR, -} DMA_Status; - -/* These are the defined channel transfer types. */ -typedef enum _dma_transfer_types -{ - DMA_M2M = 0, /* local memory to local memory */ - DMA_M2P = 1, /* local memory to PCI */ - DMA_P2M = 2, /* PCI to local memory */ - DMA_P2P = 3, /* PCI to PCI */ -} DMA_TRANSFER_TYPE; - -typedef enum _dma_interrupt_steer -{ - DMA_INT_STEER_LOCAL = 0, /* steer DMA int to local processor */ - DMA_INT_STEER_PCI = 1, /* steer DMA int to PCI bus through INTA_ */ -} DMA_INTERRUPT_STEER; - -typedef enum _dma_channel -{ - DMA_CHN_0 = 0, /* kahlua has two dma channels: 0 and 1 */ - DMA_CHN_1 = 1, -} DMA_CHANNEL; - -typedef enum _dma_snoop_mode -{ - DMA_SNOOP_DISABLE = 0, - DMA_SNOOP_ENABLE = 1, -} DMA_SNOOP_MODE; - -/******************** App. API ******************** - * The application API is for user level application - * to use the functionality provided by DMA driver. - * This is a "generic" DMA interface, it should contain - * nothing specific to the Kahlua implementation. - * Only the generic functions are exported by the library. - * - * Note: Its App.s responsibility to swap the data - * byte. In our API, we currently transfer whatever - * we are given - Big/Little Endian. This could - * become part of the DMA config, though. - **************************************************/ - - -/* Initialize DMA unit with the following: - * optional pointer to application layer print function - * - * These parameters may be added: - * ??? - * Interrupt enables, modes, etc. are set for each transfer. - * - * This function must be called before DMA unit can be used. - */ -extern DMA_Status DMA_Initialize( - int (*app_print_function)(char *,...)); /* pointer to optional "printf" - * provided by application - */ - -/* Perform the DMA transfer, only direct mode is currently implemented. - * At this point, I think it would be better to define a different - * function for chaining mode. - * Also, I'm not sure if it is appropriate to have the "generic" API - * accept snoop and int_steer parameters. The DINK user interface allows - * them, so for now I'll leave them. - * - * int_steer controls DMA interrupt steering to PCI or local processor - * type is the type of transfer: M2M, M2P, P2M, P2P - * source is the source address of the data - * dest is the destination address of the data - * len is the length of data to transfer - * channel is the DMA channel to use for the transfer - * snoop is the snoop enable control - */ -extern DMA_Status DMA_direct_transfer( DMA_INTERRUPT_STEER int_steer, - DMA_TRANSFER_TYPE type, - unsigned int source, - unsigned int dest, - unsigned int len, - DMA_CHANNEL channel, - DMA_SNOOP_MODE snoop); -#endif |