ddma.lst

au1200下的boot代码

 150 00bc 40190300 		sll	$3,$3,5
 151 00c0 24104700 		and	$2,$2,$7
 152 00c4 25104300 		or	$2,$2,$3
 153 00c8 1C0002AE 		sw	$2,28($16)
 154              	$L9:
 155 00cc 1C00038E 		lw	$3,28($16)
 156 00d0 F4FF6414 		bne	$3,$4,$L16
 157 00d4 00000000 		nop
 158              	
 159              	$L10:
 114:/mnt/hgfs/boot/booter/source/ddma.c **** 			} 
 115:/mnt/hgfs/boot/booter/source/ddma.c **** 
 116:/mnt/hgfs/boot/booter/source/ddma.c **** 			// Call user's callback routine
 117:/mnt/hgfs/boot/booter/source/ddma.c **** 			if ( NULL != channels[i].callback )
 160              		.loc 1 117 0
 161 00d8 2400028E 		lw	$2,36($16)
 162 00dc 18004014 		bne	$2,$0,$L17
 163 00e0 00000000 		nop
 164              	
GAS LISTING /tmp/ccEQxguf.s 			page 6


 118:/mnt/hgfs/boot/booter/source/ddma.c **** 				channels[i].callback( (void*)&channels[i], first, completed, channels[i].arg );
 119:/mnt/hgfs/boot/booter/source/ddma.c **** 
 120:/mnt/hgfs/boot/booter/source/ddma.c **** 			// clear interrupt bits
 121:/mnt/hgfs/boot/booter/source/ddma.c **** 			ddma->intstat &= ddma->intstat-1;
 165              		.loc 1 121 0
 166 00e4 0000448E 		lw	$4,%lo(ddma)($18)
 167              	$L18:
 122:/mnt/hgfs/boot/booter/source/ddma.c **** 			channels[i].ptr->irq = 0;
 168              		.loc 1 122 0
 169 00e8 0000058E 		lw	$5,0($16)
 170              		.loc 1 121 0
 171 00ec 0410828C 		lw	$2,4100($4)
 172 00f0 0410838C 		lw	$3,4100($4)
 173 00f4 FFFF4224 		addiu	$2,$2,-1
 174 00f8 24186200 		and	$3,$3,$2
 175 00fc 041083AC 		sw	$3,4100($4)
 176              		.loc 1 122 0
 177 0100 1000A0AC 		sw	$0,16($5)
 178              	$L7:
 179              	$LBE2:
 180              		.loc 1 86 0
 181 0104 01003126 		addiu	$17,$17,1
 182 0108 1000222A 		slt	$2,$17,16
 183 010c 05004010 		beq	$2,$0,$L6
 184 0110 2C001026 		addiu	$16,$16,44
 185              	
 186 0114 0000438E 		lw	$3,%lo(ddma)($18)
 187 0118 0410628C 		lw	$2,4100($3)
 188 011c D7FF4014 		bne	$2,$0,$L13
 189 0120 00000000 		nop
 190              	
 191              	$L6:
 192 0124 2000BF8F 		lw	$31,32($sp)
 193 0128 1C00B38F 		lw	$19,28($sp)
 194 012c 1800B28F 		lw	$18,24($sp)
 195 0130 1400B18F 		lw	$17,20($sp)
 196 0134 1000B08F 		lw	$16,16($sp)
 197 0138 0800E003 		j	$31
 198 013c 2800BD27 		addiu	$sp,$sp,40
 199              	
 200              	$L17:
 201              	$LBB3:
 202              		.loc 1 118 0
 203 0140 2800078E 		lw	$7,40($16)
 204 0144 09F84000 		jal	$2
 205 0148 21200002 		move	$4,$16
 206              	
 207              		.loc 1 121 0
 208 014c 3A000008 		j	$L18
 209 0150 0000448E 		lw	$4,%lo(ddma)($18)
 210              	
 211              	$LBE3:
 212              		.set	macro
 213              		.set	reorder
 214              	$LFE5:
 215              		.end	ddma_intr_handler
 216              		.align	2
GAS LISTING /tmp/ccEQxguf.s 			page 7


 217              		.globl	ddma_init
 218              		.ent	ddma_init
 219              		.type	ddma_init, @function
 220              	ddma_init:
 221              	$LFB6:
 123:/mnt/hgfs/boot/booter/source/ddma.c **** 			
 124:/mnt/hgfs/boot/booter/source/ddma.c **** 		}
 125:/mnt/hgfs/boot/booter/source/ddma.c **** 	}
 126:/mnt/hgfs/boot/booter/source/ddma.c **** }
 127:/mnt/hgfs/boot/booter/source/ddma.c **** 
 128:/mnt/hgfs/boot/booter/source/ddma.c **** 
 129:/mnt/hgfs/boot/booter/source/ddma.c **** /*
 130:/mnt/hgfs/boot/booter/source/ddma.c ****  *   Function   :   ddma_init
 131:/mnt/hgfs/boot/booter/source/ddma.c ****  *
 132:/mnt/hgfs/boot/booter/source/ddma.c ****  *      This function is responsible for pointing the "ddma" structure to 
 133:/mnt/hgfs/boot/booter/source/ddma.c ****  *      correct physical memory location. It also initialized the channels
 134:/mnt/hgfs/boot/booter/source/ddma.c ****  *      to known values.
 135:/mnt/hgfs/boot/booter/source/ddma.c ****  *
 136:/mnt/hgfs/boot/booter/source/ddma.c ****  *   Parameters :
 137:/mnt/hgfs/boot/booter/source/ddma.c ****  *      config		User specified configuration of the channel
 138:/mnt/hgfs/boot/booter/source/ddma.c ****  *
 139:/mnt/hgfs/boot/booter/source/ddma.c ****  *     Returns :
 140:/mnt/hgfs/boot/booter/source/ddma.c ****  *      TRUE		On Success
 141:/mnt/hgfs/boot/booter/source/ddma.c ****  *		FALSE		On Failure
 142:/mnt/hgfs/boot/booter/source/ddma.c ****  *
 143:/mnt/hgfs/boot/booter/source/ddma.c ****  */
 144:/mnt/hgfs/boot/booter/source/ddma.c **** int			ddma_init( uint32 config )
 145:/mnt/hgfs/boot/booter/source/ddma.c **** {
 222              		.loc 1 145 0
 223              		.frame	$sp,32,$31		# vars= 0, regs= 4/0, args= 16, gp= 0
 224              		.mask	0x80070000,-4
 225              		.fmask	0x00000000,0
 226              		.set	noreorder
 227              		.set	nomacro
 228              		
 229 0154 E0FFBD27 		addiu	$sp,$sp,-32
 230              	$LCFI6:
 231 0158 1800B2AF 		sw	$18,24($sp)
 232              	$LCFI7:
 233 015c 21908000 		move	$18,$4
 146:/mnt/hgfs/boot/booter/source/ddma.c **** 	int i;
 147:/mnt/hgfs/boot/booter/source/ddma.c **** 
 148:/mnt/hgfs/boot/booter/source/ddma.c **** 	/*
 149:/mnt/hgfs/boot/booter/source/ddma.c **** 	 *	Point our ddma structure to correct 
 150:/mnt/hgfs/boot/booter/source/ddma.c **** 	 *	memory location
 151:/mnt/hgfs/boot/booter/source/ddma.c **** 	 */
 152:/mnt/hgfs/boot/booter/source/ddma.c **** 	ddma = (AU1X00_DDMA*)mapPhysicalAddress(DDMA_PHYS_ADDR, sizeof(AU1X00_DDMA), 0);
 234              		.loc 1 152 0
 235 0160 0014043C 		li	$4,335544320			# 0x14000000
 236 0164 21380000 		move	$7,$0
 237              		.loc 1 145 0
 238 0168 1400B1AF 		sw	$17,20($sp)
 239              	$LCFI8:
 240              		.loc 1 152 0
 241 016c 10100624 		li	$6,4112			# 0x1010
 242 0170 00208434 		ori	$4,$4,0x2000
 243 0174 21280000 		move	$5,$0
GAS LISTING /tmp/ccEQxguf.s 			page 8


 153:/mnt/hgfs/boot/booter/source/ddma.c **** 
 154:/mnt/hgfs/boot/booter/source/ddma.c **** 	/*
 155:/mnt/hgfs/boot/booter/source/ddma.c **** 	 *	Initialize the local channel status to 0s
 156:/mnt/hgfs/boot/booter/source/ddma.c **** 	 */
 157:/mnt/hgfs/boot/booter/source/ddma.c **** 	memset((void*)channels,0,sizeof(channels));
 244              		.loc 1 157 0
 245 0178 0000113C 		lui	$17,%hi(channels)
 246              		.loc 1 145 0
 247 017c 1C00BFAF 		sw	$31,28($sp)
 248              	$LCFI9:
 249              		.loc 1 145 0
 250              	$LCFI10:
 251              		.loc 1 152 0
 252 0180 0000000C 		jal	mapPhysicalAddress
 253 0184 1000B0AF 		sw	$16,16($sp)
 254              	
 255 0188 0000103C 		lui	$16,%hi(ddma)
 256              		.loc 1 157 0
 257 018c 04002426 		addiu	$4,$17,%lo(channels)
 258 0190 21280000 		move	$5,$0
 259 0194 C0020624 		li	$6,704			# 0x2c0
 260              		.loc 1 152 0
 261              		.loc 1 157 0
 262 0198 0000000C 		jal	memset
 263 019c 000002AE 		sw	$2,%lo(ddma)($16)
 264              	
 265 01a0 0000078E 		lw	$7,%lo(ddma)($16)
 266 01a4 01000624 		li	$6,1			# 0x1
 267 01a8 FFFF0524 		li	$5,-1			# 0xffffffffffffffff
 268 01ac 2118E000 		move	$3,$7
 269 01b0 04002226 		addiu	$2,$17,%lo(channels)
 270 01b4 0F000424 		li	$4,15			# 0xf
 271              	$L23:
 158:/mnt/hgfs/boot/booter/source/ddma.c **** 
 159:/mnt/hgfs/boot/booter/source/ddma.c **** 	for( i=0; i<DDMA_NUM_CHANNELS; i++ )
 272              		.loc 1 159 0
 273 01b8 FFFF8424 		addiu	$4,$4,-1
 160:/mnt/hgfs/boot/booter/source/ddma.c **** 	{
 161:/mnt/hgfs/boot/booter/source/ddma.c **** 		channels[i].ptr = &ddma->channel[i];
 274              		.loc 1 161 0
 275 01bc 000043AC 		sw	$3,0($2)
 162:/mnt/hgfs/boot/booter/source/ddma.c **** 		channels[i].avail = TRUE;
 276              		.loc 1 162 0
 277 01c0 040046AC 		sw	$6,4($2)
 163:/mnt/hgfs/boot/booter/source/ddma.c **** 		channels[i].src_id = channels[i].dst_id = 0xFFFFFFFF;
 278              		.loc 1 163 0
 279 01c4 0C0045AC 		sw	$5,12($2)
 280 01c8 080045AC 		sw	$5,8($2)
 281 01cc 00016324 		addiu	$3,$3,256
 282 01d0 F9FF8104 		bgez	$4,$L23
 283 01d4 2C004224 		addiu	$2,$2,44
 284              	
 164:/mnt/hgfs/boot/booter/source/ddma.c **** 	}
 165:/mnt/hgfs/boot/booter/source/ddma.c **** 
 166:/mnt/hgfs/boot/booter/source/ddma.c **** 	/* Let the user specify the ddma config settings */
 167:/mnt/hgfs/boot/booter/source/ddma.c **** 	ddma->config = config;
 168:/mnt/hgfs/boot/booter/source/ddma.c **** 
GAS LISTING /tmp/ccEQxguf.s 			page 9


 169:/mnt/hgfs/boot/booter/source/ddma.c **** 	/* Disable all channel interrupts */
 170:/mnt/hgfs/boot/booter/source/ddma.c **** 	ddma->inten = 0;
 171:/mnt/hgfs/boot/booter/source/ddma.c **** 	
 172:/mnt/hgfs/boot/booter/source/ddma.c **** 	/* Install the generic DDMA interrupt handler */
 173:/mnt/hgfs/boot/booter/source/ddma.c **** 	cpuIrqEnable( IRQ_DDMA, INT_HIGH_LEVEL, ddma_intr_handler, channels );
 285              		.loc 1 173 0
 286 01d8 0000063C 		lui	$6,%hi(ddma_intr_handler)
 287              		.loc 1 167 0
 288 01dc 0010F2AC 		sw	$18,4096($7)
 289              		.loc 1 173 0
 290 01e0 4800C624 		addiu	$6,$6,%lo(ddma_intr_handler)
 291              		.loc 1 170 0
 292 01e4 0C10E0AC 		sw	$0,4108($7)
 293              		.loc 1 173 0
 294 01e8 0B000424 		li	$4,11			# 0xb
 295 01ec 04002726 		addiu	$7,$17,%lo(channels)
 296 01f0 0000000C 		jal	cpuIrqEnable
 297 01f4 01000524 		li	$5,1			# 0x1
 298              	
 174:/mnt/hgfs/boot/booter/source/ddma.c **** 
 175:/mnt/hgfs/boot/booter/source/ddma.c **** 	return TRUE;
 176:/mnt/hgfs/boot/booter/source/ddma.c **** }
 299              		.loc 1 176 0
 300 01f8 1C00BF8F 		lw	$31,28($sp)
 301 01fc 1800B28F 		lw	$18,24($sp)
 302 0200 1400B18F 		lw	$17,20($sp)
 303 0204 1000B08F 		lw	$16,16($sp)
 304 0208 01000224 		li	$2,1			# 0x1
 305 020c 0800E003 		j	$31
 306 0210 2000BD27 		addiu	$sp,$sp,32
 307              	
 308              		.set	macro
 309              		.set	reorder
 310              	$LFE6:
 311              		.end	ddma_init
 312              		.align	2
 313              		.globl	ddma_get_channel
 314              		.ent	ddma_get_channel
 315              		.type	ddma_get_channel, @function
 316              	ddma_get_channel:
 317              	$LFB7:
 177:/mnt/hgfs/boot/booter/source/ddma.c **** 
 178:/mnt/hgfs/boot/booter/source/ddma.c **** 
 179:/mnt/hgfs/boot/booter/source/ddma.c **** /*
 180:/mnt/hgfs/boot/booter/source/ddma.c ****  *   Function   :   ddma_get_channel
 181:/mnt/hgfs/boot/booter/source/ddma.c ****  *
 182:/mnt/hgfs/boot/booter/source/ddma.c ****  *      This function allocates a channel for a specific device, sets the default
 183:/mnt/hgfs/boot/booter/source/ddma.c ****  *		transfer size, allocates 'n' descriptors and sets the channels descriptor
 184:/mnt/hgfs/boot/booter/source/ddma.c ****  *		pointer to the beginning of the ring.
 185:/mnt/hgfs/boot/booter/source/ddma.c ****  *
 186:/mnt/hgfs/boot/booter/source/ddma.c ****  *		Channels are allocated High Number to Low Numeber. I.e. 15,14,13 etc. This
 187:/mnt/hgfs/boot/booter/source/ddma.c ****  *		assumes lower channel numbers have higher priority when priority is enabled.
 188:/mnt/hgfs/boot/booter/source/ddma.c ****  *
 189:/mnt/hgfs/boot/booter/source/ddma.c ****  *   Parameters :
 190:/mnt/hgfs/boot/booter/source/ddma.c ****  *      config		Pointer to the CHANNEL_CONFIG structure
 191:/mnt/hgfs/boot/booter/source/ddma.c ****  *
 192:/mnt/hgfs/boot/booter/source/ddma.c ****  *     Returns :
GAS LISTING /tmp/ccEQxguf.s 			page 10


 193:/mnt/hgfs/boot/booter/source/ddma.c ****  *      Non-NULL	Pointer to the newly allocated channel
 194:/mnt/hgfs/boot/booter/source/ddma.c ****  *		NULL		Failure to allocate channel
 195:/mnt/hgfs/boot/booter/source/ddma.c ****  *
 196:/mnt/hgfs/boot/booter/source/ddma.c ****  */
 197:/mnt/hgfs/boot/booter/source/ddma.c **** void * 	ddma_get_channel( CHANNEL_CONFIG *config )
 198:/mnt/hgfs/boot/booter/source/ddma.c **** {
 318              		.loc 1 198 0
 319              		.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
 320              		.mask	0x00000000,0
 321              		.fmask	0x00000000,0
 322              		.set	noreorder
 323              		.set	nomacro
 324              		
 199:/mnt/hgfs/boot/booter/source/ddma.c **** 	CHANNEL 		*chan = NULL;
 200:/mnt/hgfs/boot/booter/source/ddma.c **** 	DDMA_DESCRIPTOR	*desc_ring = NULL;
 201:/mnt/hgfs/boot/booter/source/ddma.c **** 	int				i;
 202:/mnt/hgfs/boot/booter/source/ddma.c **** 
 203:/mnt/hgfs/boot/booter/source/ddma.c **** 	/* 
 204:/mnt/hgfs/boot/booter/source/ddma.c **** 	 *	Find a channel to use -- if the user specified a channel