ddma.lst

au1200下的boot代码

GAS LISTING /tmp/ccEQxguf.s 			page 1


   1              		.section .mdebug.abi32
   2              		.previous
   3              		.section	.debug_abbrev,"",@progbits
   4              	$Ldebug_abbrev0:
   5              		.section	.debug_info,"",@progbits
   6              	$Ldebug_info0:
   7              		.section	.debug_line,"",@progbits
   8              	$Ldebug_line0:
   9 0000 EE010000 		.text
   9      0200B100 
   9      00000101 
   9      FB0E0A00 
   9      01010101 
  10              	$Ltext0:
  11              		.align	2
  12              		.globl	ddma_channel_start
  13              		.ent	ddma_channel_start
  14              		.type	ddma_channel_start, @function
  15              	ddma_channel_start:
  16              	$LFB2:
  17              		.file 1 "/mnt/hgfs/boot/booter/source/ddma.c"
   1:/mnt/hgfs/boot/booter/source/ddma.c **** /*********************************************************************
   2:/mnt/hgfs/boot/booter/source/ddma.c ****  *
   3:/mnt/hgfs/boot/booter/source/ddma.c ****  * Copyright:
   4:/mnt/hgfs/boot/booter/source/ddma.c ****  *	Advanced Micro Devices, AMD. All Rights Reserved.  
   5:/mnt/hgfs/boot/booter/source/ddma.c ****  *  You are hereby granted a copyright license to use, modify, and
   6:/mnt/hgfs/boot/booter/source/ddma.c ****  *  distribute the SOFTWARE so long as this entire notice is
   7:/mnt/hgfs/boot/booter/source/ddma.c ****  *  retained without alteration in any modified and/or redistributed
   8:/mnt/hgfs/boot/booter/source/ddma.c ****  *  versions, and that such modified versions are clearly identified
   9:/mnt/hgfs/boot/booter/source/ddma.c ****  *  as such. No licenses are granted by implication, estoppel or
  10:/mnt/hgfs/boot/booter/source/ddma.c ****  *  otherwise under any patents or trademarks of AMD. This 
  11:/mnt/hgfs/boot/booter/source/ddma.c ****  *  software is provided on an "AS IS" basis and without warranty.
  12:/mnt/hgfs/boot/booter/source/ddma.c ****  *
  13:/mnt/hgfs/boot/booter/source/ddma.c ****  *  To the maximum extent permitted by applicable law, AMD 
  14:/mnt/hgfs/boot/booter/source/ddma.c ****  *  DISCLAIMS ALL WARRANTIES WHETHER EXPRESS OR IMPLIED, INCLUDING 
  15:/mnt/hgfs/boot/booter/source/ddma.c ****  *  IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
  16:/mnt/hgfs/boot/booter/source/ddma.c ****  *  PURPOSE AND ANY WARRANTY AGAINST INFRINGEMENT WITH REGARD TO THE 
  17:/mnt/hgfs/boot/booter/source/ddma.c ****  *  SOFTWARE (INCLUDING ANY MODIFIED VERSIONS THEREOF) AND ANY 
  18:/mnt/hgfs/boot/booter/source/ddma.c ****  *  ACCOMPANYING WRITTEN MATERIALS.
  19:/mnt/hgfs/boot/booter/source/ddma.c ****  * 
  20:/mnt/hgfs/boot/booter/source/ddma.c ****  *  To the maximum extent permitted by applicable law, IN NO EVENT
  21:/mnt/hgfs/boot/booter/source/ddma.c ****  *  SHALL AMD BE LIABLE FOR ANY DAMAGES WHATSOEVER (INCLUDING 
  22:/mnt/hgfs/boot/booter/source/ddma.c ****  *  WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS, BUSINESS 
  23:/mnt/hgfs/boot/booter/source/ddma.c ****  *  INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR OTHER PECUNIARY
  24:/mnt/hgfs/boot/booter/source/ddma.c ****  *  LOSS) ARISING OF THE USE OR INABILITY TO USE THE SOFTWARE.   
  25:/mnt/hgfs/boot/booter/source/ddma.c ****  * 
  26:/mnt/hgfs/boot/booter/source/ddma.c ****  *  AMD assumes no responsibility for the maintenance and support
  27:/mnt/hgfs/boot/booter/source/ddma.c ****  *  of this software.
  28:/mnt/hgfs/boot/booter/source/ddma.c ****  *********************************************************************
  29:/mnt/hgfs/boot/booter/source/ddma.c ****  *
  30:/mnt/hgfs/boot/booter/source/ddma.c ****  * File:		ddma.c
  31:/mnt/hgfs/boot/booter/source/ddma.c ****  *
  32:/mnt/hgfs/boot/booter/source/ddma.c ****  * Purpose:		API for Au1550 DDMA controller
  33:/mnt/hgfs/boot/booter/source/ddma.c ****  *
  34:/mnt/hgfs/boot/booter/source/ddma.c ****  *  $RCSfile: ddma.c,v $
  35:/mnt/hgfs/boot/booter/source/ddma.c ****  *  $Author: knishio $
  36:/mnt/hgfs/boot/booter/source/ddma.c ****  *  $Revision: 1.16 $
GAS LISTING /tmp/ccEQxguf.s 			page 2


  37:/mnt/hgfs/boot/booter/source/ddma.c ****  *  $Date: 2004/05/05 18:58:58 $
  38:/mnt/hgfs/boot/booter/source/ddma.c ****  *
  39:/mnt/hgfs/boot/booter/source/ddma.c **** ***********************************************************************/
  40:/mnt/hgfs/boot/booter/source/ddma.c **** 
  41:/mnt/hgfs/boot/booter/source/ddma.c **** #include "example.h"
  42:/mnt/hgfs/boot/booter/source/ddma.c **** #include "ddma_api.h"
  43:/mnt/hgfs/boot/booter/source/ddma.c **** 
  44:/mnt/hgfs/boot/booter/source/ddma.c **** //#define DEBUG 1
  45:/mnt/hgfs/boot/booter/source/ddma.c **** 
  46:/mnt/hgfs/boot/booter/source/ddma.c **** /**********************************************************************
  47:/mnt/hgfs/boot/booter/source/ddma.c ****                                         GLOBALS
  48:/mnt/hgfs/boot/booter/source/ddma.c **** **********************************************************************/
  49:/mnt/hgfs/boot/booter/source/ddma.c **** static 			AU1X00_DDMA	*ddma;						  	// Points Au1550 ddma engine
  50:/mnt/hgfs/boot/booter/source/ddma.c **** static 			CHANNEL		channels[DDMA_NUM_CHANNELS];	// Local channel status
  51:/mnt/hgfs/boot/booter/source/ddma.c **** 
  52:/mnt/hgfs/boot/booter/source/ddma.c **** /**********************************************************************
  53:/mnt/hgfs/boot/booter/source/ddma.c ****                     Helper Functions
  54:/mnt/hgfs/boot/booter/source/ddma.c **** **********************************************************************/
  55:/mnt/hgfs/boot/booter/source/ddma.c **** 
  56:/mnt/hgfs/boot/booter/source/ddma.c **** void		ddma_channel_start( 	CHANNEL *channel ) { channel->ptr->cfg |= DDMA_CHANCFG_EN; }
  18              		.loc 1 56 0
  19              		.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
  20              		.mask	0x00000000,0
  21              		.fmask	0x00000000,0
  22              		.set	noreorder
  23              		.set	nomacro
  24              		
  25              		.loc 1 56 0
  26 0000 0000838C 		lw	$3,0($4)
  27 0004 0000628C 		lw	$2,0($3)
  28 0008 01004234 		ori	$2,$2,0x1
  29 000c 000062AC 		sw	$2,0($3)
  30 0010 0800E003 		j	$31
  31 0014 00000000 		nop
  32              	
  33              		.set	macro
  34              		.set	reorder
  35              	$LFE2:
  36              		.end	ddma_channel_start
  37              		.align	2
  38              		.globl	ddma_channel_stop
  39              		.ent	ddma_channel_stop
  40              		.type	ddma_channel_stop, @function
  41              	ddma_channel_stop:
  42              	$LFB3:
  57:/mnt/hgfs/boot/booter/source/ddma.c **** void		ddma_channel_stop( 	 	CHANNEL *channel ) { channel->ptr->cfg &= ~DDMA_CHANCFG_EN; }
  43              		.loc 1 57 0
  44              		.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
  45              		.mask	0x00000000,0
  46              		.fmask	0x00000000,0
  47              		.set	noreorder
  48              		.set	nomacro
  49              		
  50              		.loc 1 57 0
  51 0018 0000828C 		lw	$2,0($4)
  52 001c FEFF0424 		li	$4,-2			# 0xfffffffffffffffe
  53 0020 0000438C 		lw	$3,0($2)
GAS LISTING /tmp/ccEQxguf.s 			page 3


  54 0024 24186400 		and	$3,$3,$4
  55 0028 000043AC 		sw	$3,0($2)
  56 002c 0800E003 		j	$31
  57 0030 00000000 		nop
  58              	
  59              		.set	macro
  60              		.set	reorder
  61              	$LFE3:
  62              		.end	ddma_channel_stop
  63              		.align	2
  64              		.globl	ddma_doorbell
  65              		.ent	ddma_doorbell
  66              		.type	ddma_doorbell, @function
  67              	ddma_doorbell:
  68              	$LFB4:
  58:/mnt/hgfs/boot/booter/source/ddma.c **** void		ddma_doorbell( 			CHANNEL *channel ) { channel->ptr->dbell = 0xFFFFFFFF; }
  69              		.loc 1 58 0
  70              		.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
  71              		.mask	0x00000000,0
  72              		.fmask	0x00000000,0
  73              		.set	noreorder
  74              		.set	nomacro
  75              		
  76              		.loc 1 58 0
  77 0034 0000838C 		lw	$3,0($4)
  78 0038 FFFF0224 		li	$2,-1			# 0xffffffffffffffff
  79 003c 0C0062AC 		sw	$2,12($3)
  80 0040 0800E003 		j	$31
  81 0044 00000000 		nop
  82              	
  83              		.set	macro
  84              		.set	reorder
  85              	$LFE4:
  86              		.end	ddma_doorbell
  87              		.align	2
  88              		.ent	ddma_intr_handler
  89              		.type	ddma_intr_handler, @function
  90              	ddma_intr_handler:
  91              	$LFB5:
  59:/mnt/hgfs/boot/booter/source/ddma.c **** 
  60:/mnt/hgfs/boot/booter/source/ddma.c **** 
  61:/mnt/hgfs/boot/booter/source/ddma.c **** /*
  62:/mnt/hgfs/boot/booter/source/ddma.c ****  *   Function   :   ddma_intr_handler
  63:/mnt/hgfs/boot/booter/source/ddma.c ****  *
  64:/mnt/hgfs/boot/booter/source/ddma.c ****  *      This function is responsible for handling DDMA interrupts.
  65:/mnt/hgfs/boot/booter/source/ddma.c ****  *
  66:/mnt/hgfs/boot/booter/source/ddma.c ****  *		User specified callbacks can be used for application processing at
  67:/mnt/hgfs/boot/booter/source/ddma.c ****  *		interrupt time.
  68:/mnt/hgfs/boot/booter/source/ddma.c ****  *
  69:/mnt/hgfs/boot/booter/source/ddma.c ****  *   Parameters :
  70:/mnt/hgfs/boot/booter/source/ddma.c ****  *      irq			IRQ #
  71:/mnt/hgfs/boot/booter/source/ddma.c ****  *		arg			intr_handler data
  72:/mnt/hgfs/boot/booter/source/ddma.c ****  *
  73:/mnt/hgfs/boot/booter/source/ddma.c ****  *     Returns :
  74:/mnt/hgfs/boot/booter/source/ddma.c ****  *      Nothing
  75:/mnt/hgfs/boot/booter/source/ddma.c ****  *
  76:/mnt/hgfs/boot/booter/source/ddma.c ****  */
GAS LISTING /tmp/ccEQxguf.s 			page 4


  77:/mnt/hgfs/boot/booter/source/ddma.c **** static void ddma_intr_handler( int irq, void *arg )
  78:/mnt/hgfs/boot/booter/source/ddma.c **** {
  92              		.loc 1 78 0
  93              		.frame	$sp,40,$31		# vars= 0, regs= 5/0, args= 16, gp= 0
  94              		.mask	0x800f0000,-8
  95              		.fmask	0x00000000,0
  96              		.set	noreorder
  97              		.set	nomacro
  98              		
  99 0048 D8FFBD27 		addiu	$sp,$sp,-40
 100              	$LCFI0:
 101 004c 1800B2AF 		sw	$18,24($sp)
 102              	$LCFI1:
  79:/mnt/hgfs/boot/booter/source/ddma.c **** 	CHANNEL	*channels = (CHANNEL*)arg;
  80:/mnt/hgfs/boot/booter/source/ddma.c **** 	DDMA_DESCRIPTOR 	*first;
  81:/mnt/hgfs/boot/booter/source/ddma.c **** 	int		i;
  82:/mnt/hgfs/boot/booter/source/ddma.c **** 
  83:/mnt/hgfs/boot/booter/source/ddma.c **** #ifdef DEBUG
  84:/mnt/hgfs/boot/booter/source/ddma.c **** 	printf("ddma_intr_handler: intstat:%08X\n", ddma->intstat );
  85:/mnt/hgfs/boot/booter/source/ddma.c **** #endif	
  86:/mnt/hgfs/boot/booter/source/ddma.c **** 	for( i=0; i<DDMA_NUM_CHANNELS && ddma->intstat; i++ )
 103              		.loc 1 86 0
 104 0050 0000123C 		lui	$18,%hi(ddma)
 105 0054 0000438E 		lw	$3,%lo(ddma)($18)
 106              		.loc 1 78 0
 107 0058 1400B1AF 		sw	$17,20($sp)
 108              	$LCFI2:
 109 005c 2000BFAF 		sw	$31,32($sp)
 110              	$LCFI3:
 111 0060 1C00B3AF 		sw	$19,28($sp)
 112              	$LCFI4:
 113 0064 1000B0AF 		sw	$16,16($sp)
 114              	$LCFI5:
 115              		.loc 1 86 0
 116 0068 0410628C 		lw	$2,4100($3)
 117 006c 2D004010 		beq	$2,$0,$L6
 118 0070 21880000 		move	$17,$0
 119              	
 120 0074 2180A000 		move	$16,$5
 121 0078 01001324 		li	$19,1			# 0x1
 122              	$L13:
  87:/mnt/hgfs/boot/booter/source/ddma.c **** 	{
  88:/mnt/hgfs/boot/booter/source/ddma.c **** 		// Get the channel number -- must shift by 1 to get proper array index
  89:/mnt/hgfs/boot/booter/source/ddma.c **** 		if ( ddma->intstat & 1<<i )
 123              		.loc 1 89 0
 124 007c 0410628C 		lw	$2,4100($3)
 125 0080 04183302 		sll	$3,$19,$17
 126 0084 24104300 		and	$2,$2,$3
 127 0088 1E004010 		beq	$2,$0,$L7
 128 008c 00000000 		nop
 129              	
 130              	$LBB2:
  90:/mnt/hgfs/boot/booter/source/ddma.c **** 		{
  91:/mnt/hgfs/boot/booter/source/ddma.c **** 			int		completed=0;
 131              		.loc 1 91 0
 132 0090 21300000 		move	$6,$0
  92:/mnt/hgfs/boot/booter/source/ddma.c **** 
GAS LISTING /tmp/ccEQxguf.s 			page 5


  93:/mnt/hgfs/boot/booter/source/ddma.c **** 			first = channels[i].dh;
 133              		.loc 1 93 0
 134 0094 1C00058E 		lw	$5,28($16)
 135 0098 2000048E 		lw	$4,32($16)
 136 009c 33000008 		j	$L9
 137 00a0 00E0073C 		li	$7,-536870912			# 0xffffffffe0000000
 138              	
 139              	$L16:
  94:/mnt/hgfs/boot/booter/source/ddma.c **** 
  95:/mnt/hgfs/boot/booter/source/ddma.c **** //
  96:/mnt/hgfs/boot/booter/source/ddma.c **** // CTG TODO -- This will not work if there is only one descriptor in a ring :(
  97:/mnt/hgfs/boot/booter/source/ddma.c **** //
  98:/mnt/hgfs/boot/booter/source/ddma.c **** #ifdef DEBUG
  99:/mnt/hgfs/boot/booter/source/ddma.c **** 			printf("dh:%x dt:%x dh_cmd0:%X\n", channels[i].dh, channels[i].dt, channels[i].dh->u.std.cmd0 );
 100:/mnt/hgfs/boot/booter/source/ddma.c **** #endif
 101:/mnt/hgfs/boot/booter/source/ddma.c **** 			// move the head pointer along -- this allows user's to re-post in callback
 102:/mnt/hgfs/boot/booter/source/ddma.c **** 			while( channels[i].dh != channels[i].dt && !(channels[i].dh->u.std.cmd0 & DDMA_DESCCMD_V) ) 
 103:/mnt/hgfs/boot/booter/source/ddma.c **** 			{
 104:/mnt/hgfs/boot/booter/source/ddma.c **** 				completed++;
 105:/mnt/hgfs/boot/booter/source/ddma.c **** #ifdef DEBUG
 106:/mnt/hgfs/boot/booter/source/ddma.c **** 				printf("Descriptor:%X completed\n", channels[i].dh );
 107:/mnt/hgfs/boot/booter/source/ddma.c **** #endif				
 108:/mnt/hgfs/boot/booter/source/ddma.c **** 				/*
 109:/mnt/hgfs/boot/booter/source/ddma.c **** 				 *	We need to get the next descriptor's address. We must be careful to OR in the proper
 110:/mnt/hgfs/boot/booter/source/ddma.c **** 				 *  MIPS KESG0/1 address bits. These are taken from the previously configured ring pointers.
 111:/mnt/hgfs/boot/booter/source/ddma.c **** 				 *  The ring pointer was passed to us by the user... so assume they are all the same.
 112:/mnt/hgfs/boot/booter/source/ddma.c **** 				 */
 113:/mnt/hgfs/boot/booter/source/ddma.c **** 				channels[i].dh = NXTPTR_TO_VIRT( channels[i].ring, channels[i].dh );
 140              		.loc 1 113 0
 141 00a4 0000628C 		lw	$2,0($3)
 142 00a8 0B004004 		bltz	$2,$L10
 143 00ac 00000000 		nop
 144              	
 145 00b0 1C00638C 		lw	$3,28($3)
 146 00b4 1800028E 		lw	$2,24($16)
 147              		.loc 1 104 0
 148 00b8 0100C624 		addiu	$6,$6,1
 149              		.loc 1 113 0