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modified interrupt structure

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This commit is contained in:
Markus Fröschle
2014-10-11 18:43:02 +00:00
parent 5ae4c12795
commit 2c7434e751
4 changed files with 610 additions and 587 deletions
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93
BaS_gcc/sys/exceptions.S
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@@ -187,19 +187,19 @@ init_vec_loop:
#ifdef MACHINE_FIREBEE
// ACP interrupts 1-7 (user-defined, generated by FPGA on the FireBee, M5484LITE has irq7 and irq5 for PCI)
lea irq1(pc),a1
lea mfp_irq1(pc),a1
move.l a1,0x104(a0)
lea irq2(pc),a1
lea mfp_irq2(pc),a1
move.l a1,0x108(a0)
lea irq3(pc),a1
lea mfp_irq3(pc),a1
move.l a1,0x10c(a0)
lea irq4(pc),a1
lea mfp_irq4(pc),a1
move.l a1,0x110(a0)
lea irq5(pc),a1
lea mfp_irq5(pc),a1
move.l a1,0x114(a0)
lea irq6(pc),a1
lea mfp_irq6(pc),a1
move.l a1,0x118(a0)
lea irq7(pc),a1
lea mfp_irq7(pc),a1
move.l a1,0x11c(a0)
@@ -381,18 +381,38 @@ flpoow:
#endif /* _NOT_USED */
irq1:
irq 0x64,1,0x02
irq 0x64,1,0x02 // IRQ1
irq2: // hbl
// move.b #3,2(sp)
// rte
irq 0x68,2,0x04
irq2:
irq 0x68,2,0x04 // IRQ2
irq3:
irq 0x6c,3,0x08
irq 0x6c,3,0x08 // IRQ3
irq4:
irq 0x70,4,0x10 // IRQ4
irq5:
irq 0x74,5,0x20 // IRQ5
irq6:
irq 0x78,6,0x40 // IRQ6
irq7:
irq 0x7c,7,0x80 // IRQ7
mfp_irq1:
irq 0x104,1,0x02 // IRQ1
mfp_irq2:
irq 0x108,2,0x04 // IRQ2
mfp_irq3:
irq 0x10c,3,0x08 // IRQ3
mfp_irq4:
irq 0x110,4,0x10 // IRQ4
irq4: // vbl
irq 0x70,4,0x10
#if MACHINE_M5484LITE_notyet // handlers for M5484LITE
@@ -413,10 +433,10 @@ irq5text:
.ascii "IRQ5!"
.dc.b 13,10,0
irq6:
mfp_irq6:
irq 0x74,5,0x20
irq7: // irq7 is tied to PCI INTA# and PCI INTB# on the M5484LITE
mfp_irq7: // irq7 is tied to PCI INTA# and PCI INTB# on the M5484LITE
move.w #0x2700,sr // disable interrupts
@@ -437,8 +457,7 @@ irq7text:
.text
#elif MACHINE_FIREBEE /* these handlers are only meaningful for the Firebee */
irq5: move.w #0x2700,sr // disable interrupts
mfp_irq5: move.w #0x2700,sr // disable interrupts
subq.l #4,sp // extra space
link a6,#-4 * 4 // save gcc scratch registers
@@ -464,8 +483,8 @@ irq5_forward: move.l 0x74,a0 // fetch OS irq5 vector
move.w #0x2500,sr // set interrupt level
rts // jump through vector
irq6: move.w #0x2700,sr // disable interrupt
#ifdef _NOT_USED_
mfp_irq6: move.w #0x2700,sr // disable interrupt
subq.l #4,sp // extra space
link a6,#-4 * 4 // save gcc scratch registers
movem.l d0-d1/a0-a1,(sp)
@@ -480,13 +499,13 @@ irq6: move.w #0x2700,sr // disable interrupt
movem.l (sp),d0-d1/a0-a1 // restore registers
unlk a6
addq.l #4,sp // extra word not needed in this case
addq.l #4,sp // "extra space" not needed in this case
rte
irq6_forward:
move.l 0xf0020000,a0 // fetch "autovector"
mfp_irq6_forward:
move.l 0xf0020000,a0 // fetch FPGA "autovector"
add.l _rt_vbr,a0 // add runtime VBR
move.l (a0),4(a6) // fetch handler address and put it on stack
move.l (a0),4(a6) // fetch handler address and put it on "extra space"
movem.l (sp),d0-d1/a0-a1
unlk a6
@@ -494,7 +513,11 @@ irq6_forward:
rts // jump through vector
#ifdef _NOT_USED_
#else /* _NOT_USED_ */
// this is the old code from Fredi
mfp_irq6:
// MFP interrupt from FPGA
move.w #0x2700,sr // disable interrupt
subq.l #8,sp
@@ -503,30 +526,30 @@ irq6_forward:
lea MCF_EPORT_EPFR,a5 // clear int6 from edge port
bset #6,(a5)
irq6_non_sca:
mfp_irq6_non_sca:
// test auf acsi dma -----------------------------------------------------------------
lea 0xfffffa0b,a5
bset #7,-4(a5) // int ena
btst.b #7,(a5) // acsi dma int?
beq non_acsi_dma
beq mfp_non_acsi_dma
bsr acsi_dma
non_acsi_dma:
mfp_non_acsi_dma:
// ----------------------------------------------------------------------------------
tst.b (a5)
bne irq6_1
bne mfp_irq6_1
tst.b 2(a5)
bne irq6_1
bne mfp_irq6_1
movem.l (sp),d0/a5
addq.l #8,sp
rte
irq6_1:
mfp_irq6_1:
lea MCF_GPIO_PODR_FEC1L,a5
bclr.b #4,(a5) // led on
lea blinker,a5
addq.l #1,(a5) // +1
move.l (a5),d0
and.l #0x80,d0
bne irq6_2
bne mfp_irq6_2
lea MCF_GPIO_PODR_FEC1L,a5
bset.b #4,(a5) // led off
@@ -545,7 +568,7 @@ irq6_1:
* 9: HSYNC
*/
irq6_2:
mfp_irq6_2:
move.l 0xF0020000,a5 // vector holen
add.l _rt_vbr,a5 // basis
move.l (a5),d0 // vector holen
@@ -624,7 +647,7 @@ acsi_dma_end:
/*
* irq 7 = pseudo bus error
*/
irq7:
mfp_irq7:
lea -12(sp),sp
movem.l d0/a0,(sp)