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implemented hook_interrupt() in PCI code

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enabled PCI interrupts
ohci seems to damage something in PCI config -> PCI device enumeration 
does not top with latest device
networking in EmuTOS lost (probably a result of PCI interrupt
implementation)
This commit is contained in:
Markus Fröschle
2014-10-05 17:50:15 +00:00
parent 2ee1ddf58d
commit ab7371532f
21 changed files with 1842 additions and 1577 deletions
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67
sys/exceptions.S
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@@ -216,6 +216,9 @@ init_vec_loop:
// install lowlevel_isr_handler for the PSC3 interrupt
move.l a1,(INT_SOURCE_PSC3 + 64) * 4(a0)
// install lowlevel_isr_handler for the XLBPCI interrupt
move.l a1,(INT_SOURCE_XLBPCI + 64) * 4(a0)
#ifndef MACHINE_FIREBEE
// FEC1 not wired on the FireBee, but used on other machines
move.l a1,(INT_SOURCE_FEC1 + 64) * 4(a0)
@@ -429,10 +432,65 @@ irq7text:
.text
#elif MACHINE_FIREBEE /* these handlers are only meaningful for the Firebee */
irq5:
irq 0x74,5,0x20
irq6: // MFP interrupt from FPGA
irq5: move.w #0x2700,sr // disable interrupts
subq.l #4,sp // extra space
link a6,#-4 * 4 // save gcc scratch registers
movem.l d0-d1/a0-a1,(sp)
jsr _irq5_handler // call C handler routine
tst.l d0 // handled?
bne irq5_forward
movem.l (sp),d0-d1/a0-a1 // restore registers
unlk a6
addq.l #4,sp
rte // return from exception
irq5_forward: move.l 0x74,a0 // fetch OS irq5 vector
add.l _rt_vbr,a0 // add runtime vbr
move.l a0,4(a6) // put on stack
movem.l (sp),d0-d1/a0-a1 // restore registers
unlk a6 //
move.w #0x2500,sr // set interrupt level
rts // jump through vector
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)
move.l 4(a6),-(sp) // format status word
move.l 8(a6),-(sp) // pc at exception
jsr _irq6_interrupt_handler // call C handler
lea 8(sp),sp // fix stack
tst.l d0 // interrupt handled?
bne irq6_forward // no, forward to TOS
movem.l (sp),d0-d1/a0-a1 // restore registers
unlk a6
addq.l #4,sp // extra word not needed in this case
rte
irq6_forward:
move.l 0xf0020000,a0 // fetch "autovector"
add.l _rt_vbr,a0 // add runtime VBR
move.l (a0),4(a6) // fetch handler address and put it on stack
movem.l (sp),d0-d1/a0-a1
unlk a6
move.w #0x2600,sr // set interrupt level
rts // jump through vector
#ifdef _NOT_USED_
// MFP interrupt from FPGA
move.w #0x2700,sr // disable interrupt
subq.l #8,sp
movem.l d0/a5,(sp) // save registers
@@ -555,6 +613,9 @@ acsi_dma_end:
move.l (sp)+,d1
move.l (sp)+,a1
rts
#endif /* _NOT_USED_ */
/*
* irq 7 = pseudo bus error
*/