162 lines
4.3 KiB
Plaintext
162 lines
4.3 KiB
Plaintext
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$NetBSD: Interrupts,v 1.1 2000/12/14 20:30:14 scw Exp $
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NetBSD/mvme68k Interrupt Levels
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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NetBSD/mvme68k interrupts are dependent on the type of device which
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generates them. This holds true regardless of what bus the device is
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situated on (eg. local, VMEbus or IndustryPack site).
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On MVME147, there is a fixed 1:1 mapping of VMEbus interrupt level
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to CPU interrupt level. This implies that VMEbus devices must be
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set to interrupt at the correct level for that type of device.
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On the other boards, each VMEbus interrupt level can be mapped to a
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specific CPU interrupt level so the above restriction does not apply.
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However, note that the mapping can only be done once. Therefore it is
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not possible to have two VMEbus devices which require different CPU
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interrupt levels sharing the same VMEbus interrupt level.
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The mapping of device type to CPU interrupt levels is as follows:
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CPU Irq Device Type
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~~~~~~~ ~~~~~~~~~~~
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<Highest>
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6 - 7 Anything which generates an exceptional condition
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which *must* be responded to immediately. For
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example, a memory parity/uncorrectable data error.
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5 Reserved for the system clock/scheduler. Do not use.
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4 Serial port devices (rs232, rs422 etc).
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3 Network interfaces.
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2 Disk/Block device interfaces.
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1 Anything else.
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<Lowest>
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Interrupt Vectors
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~~~~~~~~~~~~~~~~~
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NetBSD/mvme68k does not use or generate `auto-vectored' interrupts.
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All vectored interrupts up to and including vector 0x7f are reserved
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for use by onboard devices.
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VMEbus cards and IndustryPack modules are free to use vectors 0x80 -> 0xff.
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The onboard devices' vectors are as follows:
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MVME147:
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0x40 PCC: ACFAIL
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0x41 PCC: BERR
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0x42 PCC: ABORT Switch
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0x43 PCC: ZS Chips shared vector
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0x44 PCC: Lance Ethernet
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0x45 PCC: WD33C93 SCSI
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0x46 PCC: DMA
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0x47 PCC: Printer
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0x48 PCC: Timer1
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0x49 PCC: Timer2
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0x4a PCC: Soft Interrupt 1
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0x4b PCC: Soft Interrupt 2
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0x4c -> 0x4f PCC: <unused>
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MVME167/177:
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0x50 PCC2: Printer `BUSY'
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0x51 PCC2: Printer `Paper Empty'
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0x52 PCC2: Printer `Select'
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0x53 PCC2: Printer `Fault'
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0x54 PCC2: Printer `ACK'
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0x55 PCC2: SCSI
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0x56 PCC2: Ethernet `Error'
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0x57 PCC2: Ethernet
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0x58 PCC2: Timer 2
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0x59 PCC2: Timer 1
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0x5a PCC2: GPIO
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0x5b PCC2: <unused>
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0x5c PCC2: CD2401 Rx Exception
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0x5d PCC2: CD2401 Modem
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0x5e PCC2: CD2401 Tx
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0x5f PCC2: CD2401 Rx
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0x60 -> 0x67 VME2: <unused>
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0x68 VME2: Software Interrupt #0
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0x69 VME2: Software Interrupt #1
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0x6a VME2: Software Interrupt #2
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0x6b VME2: Software Interrupt #3
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0x6c VME2: Software Interrupt #4
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0x6d VME2: Software Interrupt #5
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0x6e VME2: Software Interrupt #6
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0x6f VME2: Software Interrupt #7
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0x70 VME2: GCSR Location Monitor #0
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0x71 VME2: GCSR Location Monitor #1
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0x72 VME2: GCSR SIG #0
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0x73 VME2: GCSR SIG #1
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0x74 VME2: GCSR SIG #2
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0x75 VME2: GCSR SIG #3
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0x76 VME2: DMA Controller
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0x77 VME2: VIA
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0x78 VME2: Tick Timer #1
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0x79 VME2: Tick Timer #2
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0x7a VME2: `IRQ1' feature
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0x7b VME2: Parity/ECC Error
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0x7c VME2: Master Write Post Error
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0x7d VME2: SYSFAIL
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0x7e VME2: ABORT Switch
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0x7f VME2: ACFAIL
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MVME162/172:
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0x40 IPACK: DMA_a
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0x41 IPACK: DMA_b
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0x42 IPACK: DMA_c
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0x43 IPACK: DMA_d
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0x44 IPACK: Programmable Clock
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0x50 -> 0x52 MC2: <unused>
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0x53 MC2: Timer 4
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0x54 MC2: Timer 3
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0x55 MC2: SCSI
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0x56 MC2: Ethernet `Error'
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0x57 MC2: Ethernet
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0x58 MC2: Timer 2
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0x59 MC2: Timer 1
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0x5a MC2: <unused>
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0x5b MC2: Parity/ECC Error
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0x5c MC2: ZS #1 (vector supplied by ZS chip)
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0x5d MC2: ZS #2 (vector supplied by ZS chip)
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0x5e MC2: Abort Switch
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0x5f MC2: <unused>
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0x60 -> 0x67 VME2: <unused>
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0x68 VME2: Software Interrupt #0
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0x69 VME2: Software Interrupt #1
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0x6a VME2: Software Interrupt #2
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0x6b VME2: Software Interrupt #3
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0x6c VME2: Software Interrupt #4
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0x6d VME2: Software Interrupt #5
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0x6e VME2: Software Interrupt #6
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0x6f VME2: Software Interrupt #7
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0x70 VME2: GCSR Location Monitor #0
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0x71 VME2: GCSR Location Monitor #1
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0x72 VME2: GCSR SIG #0
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0x73 VME2: GCSR SIG #1
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0x74 VME2: GCSR SIG #2
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0x75 VME2: GCSR SIG #3
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0x76 VME2: DMA Controller
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0x77 VME2: VIA
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0x78 VME2: Tick Timer #1
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0x79 VME2: Tick Timer #2
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0x7a VME2: `IRQ1' feature
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0x7b VME2: Parity/ECC Error
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0x7c VME2: Master Write Post Error
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0x7d VME2: SYSFAIL
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0x7e VME2: <unused>
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0x7f VME2: ACFAIL
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