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-rw-r--r--cpu/mpc824x/drivers/dma/dma1.c801
1 files changed, 0 insertions, 801 deletions
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;
-}