RE: radeon RV730 in iMac troubleshooting

[Josh Moyer <JMoyer%nodomain.net@localhost>]

.mrg. wrote:
>ah, i am reminded of this channge that went in recently:
>   https://mail-index.netbsd.org/source-changes/2023/11/06/msg148463.html
>can you try a -current snapshot and see if it works less badly?

Yes.  I tried -current at HEAD/202311170650Z and still saw the black screen at init(8) time. :(

>> I hacked kern/init_main.c to panic on line 739 before the display goes dark and the last two dmesgs are:
>> 
>> pci_mem_find: void region (dev/pci/pci_map.c)
>
> hmm, this one happens when the mapping size is 0.  can you post the
> output of "pcictl pciN dump -d 0", for whatever "radeon0 at pciN"
>  matches the dmesg logs, for a boot that disabled radeon0.

Under 10.0_RC1, I ran and saw the following:

meadow# pcictl pci1 dump -d 0
PCI configuration registers:
  Common header:
    0x00: 0x94881002 0x00100007 0x03000000 0x00800040

    Vendor Name: ATI Technologies (0x1002)
    Device Name: Mobility Radeon HD 4670 (0x9488)
    Command register: 0x0007
      I/O space accesses: on
      Memory space accesses: on
      Bus mastering: on
      Special cycles: off
      MWI transactions: off
      Palette snooping: off
      Parity error checking: off
      Address/data stepping: off
      System error (SERR): off
      Fast back-to-back transactions: off
      Interrupt disable: off
    Status register: 0x0010
      Immediate Readiness: off
      Interrupt status: inactive
      Capability List support: on
      66 MHz capable: off
      User Definable Features (UDF) support: off
      Fast back-to-back capable: off
      Data parity error detected: off
      DEVSEL timing: fast (0x0)
      Slave signaled Target Abort: off
      Master received Target Abort: off
      Master received Master Abort: off
      Asserted System Error (SERR): off
      Parity error detected: off
    Class Name: display (0x03)
    Subclass Name: VGA (0x00)
    Interface: 0x00
    Revision ID: 0x00
    BIST: 0x00
    Header Type: 0x00+multifunction (0x80)
    Latency Timer: 0x00
    Cache Line Size: 256bytes (0x40)

  Type 0 ("normal" device) header:
    0x10: 0xc000000c 0x00000000 0xd0420004 0x00000000
    0x20: 0x00002001 0x00000000 0x00000000 0x00b6106b
    0x30: 0xd0400001 0x00000050 0x00000000 0x00000100

    Base address register at 0x10
      type: 64-bit prefetchable memory
      base: 0x00000000c0000000
    Base address register at 0x18
      type: 64-bit nonprefetchable memory
      base: 0x00000000d0420000
    Base address register at 0x20
      type: I/O
      base: 0x00002000
    Base address register at 0x24
      not implemented
    Cardbus CIS Pointer: 0x00000000
    Subsystem vendor ID: 0x106b
    Subsystem ID: 0x00b6
    Expansion ROM Base Address Register: 0xd0400001
      base: 0xd0400000
      Expansion ROM Enable: on
      Validation Status: Validation not supported
      Validation Details: 0x0
    Capability list pointer: 0x50
    Reserved @ 0x38: 0x00000000
    Maximum Latency: 0x00
    Minimum Grant: 0x00
    Interrupt pin: 0x01 (pin A)
    Interrupt line: 0x00

  Capability register at 0x50
    type: 0x01 (Power Management)
  Capability register at 0x58
    type: 0x10 (PCI Express)
  Capability register at 0xa0
    type: 0x05 (MSI)

  PCI Power Management Capabilities Register
    Capabilities register: 0x0603
      Version: 1.2
      PME# clock: off
      Device specific initialization: off
      3.3V auxiliary current: self-powered
      D1 power management state support: on
      D2 power management state support: on
      PME# support D0: off
      PME# support D1: off
      PME# support D2: off
      PME# support D3 hot: off
      PME# support D3 cold: off
    Control/status register: 0x00000000
      Power state: D0
      PCI Express reserved: off
      No soft reset: off
      PME# assertion: disabled
      Data Select: 0
      Data Scale: 0
      PME# status: off
    Bridge Support Extensions register: 0x00
      B2/B3 support: off
      Bus Power/Clock Control Enable: off
    Data register: 0x00

  PCI Message Signaled Interrupt
    Message Control register: 0x0080
      MSI Enabled: off
      Multiple Message Capable: no (1 vector)
      Multiple Message Enabled: off (1 vector)
      64 Bit Address Capable: on
      Per-Vector Masking Capable: off
      Extended Message Data Capable: off
      Extended Message Data Enable: off
    Message Address (lower) register: 0x00000000
    Message Address (upper) register: 0x00000000
    Message Data register: 0x0000

  PCI Express Capabilities Register
    Capability register: 0x0012
      Capability version: 2
      Device type: Legacy PCI Express Endpoint device
      Slot implemented: off
      Interrupt Message Number: 0x00
    Device Capabilities Register: 0x012c8fa0
      Max Payload Size Supported: 128 bytes max
      Phantom Functions Supported: not available
      Extended Tag Field Supported: 8bit
      Endpoint L0 Acceptable Latency: 2us - 4us
      Endpoint L1 Acceptable Latency: More than 64us
      Attention Button Present: off
      Attention Indicator Present: off
      Power Indicator Present: off
      Role-Based Error Report: on
      Captured Slot Power Limit: 75W
      Function-Level Reset Capability: off
    Device Control Register: 0x0810
      Correctable Error Reporting Enable: off
      Non Fatal Error Reporting Enable: off
      Fatal Error Reporting Enable: off
      Unsupported Request Reporting Enable: off
      Enable Relaxed Ordering: on
      Max Payload Size: 128 byte
      Extended Tag Field Enable: off
      Phantom Functions Enable: off
      Aux Power PM Enable: off
      Enable No Snoop: on
      Max Read Request Size: 128 byte
    Device Status Register: 0x0000
      Correctable Error Detected: off
      Non Fatal Error Detected: off
      Fatal Error Detected: off
      Unsupported Request Detected: off
      Aux Power Detected: off
      Transaction Pending: off
      Emergency Power Reduction Detected: off
    Link Capabilities Register: 0x00000d02
      Maximum Link Speed: 5.0GT/s
      Maximum Link Width: x16 lanes
      Active State PM Support: L0s and L1 supported
      L0 Exit Latency: Less than 64ns
      L1 Exit Latency: Less than 1us
      Port Number: 0
      Clock Power Management: off
      Surprise Down Error Report: off
      Data Link Layer Link Active: off
      Link BW Notification Capable: off
      ASPM Optionally Compliance: off
    Link Control Register: 0x0040
      Active State PM Control: disabled
      Read Completion Boundary Control: 64bytes
      Link Disable: off
      Retrain Link: off
      Common Clock Configuration: on
      Extended Synch: off
      Enable Clock Power Management: off
      Hardware Autonomous Width Disable: off
      Link Bandwidth Management Interrupt Enable: off
      Link Autonomous Bandwidth Interrupt Enable: off
      DRS Signaling Control: not reported
    Link Status Register: 0x1102
      Negotiated Link Speed: 5.0GT/s
      Negotiated Link Width: x16 lanes
      Training Error: off
      Link Training: off
      Slot Clock Configuration: on
      Data Link Layer Link Active: off
      Link Bandwidth Management Status: off
      Link Autonomous Bandwidth Status: off
    Device Capabilities 2: 0x00000000
      Completion Timeout Ranges Supported: not supported
      Completion Timeout Disable Supported: off
      ARI Forwarding Supported: off
      AtomicOp Routing Supported: off
      32bit AtomicOp Completer Supported: off
      64bit AtomicOp Completer Supported: off
      128-bit CAS Completer Supported: off
      No RO-enabled PR-PR passing: off
      LTR Mechanism Supported: off
      TPH Completer Supported: Not supported
      LN System CLS: Not supported or not in effect
      10-bit Tag Completer Supported: off
      10-bit Tag Requester Supported: off
      OBFF Supported: Not supported
      Extended Fmt Field Supported: off
      End-End TLP Prefix Supported: off
      Max End-End TLP Prefixes: 4
      Emergency Power Reduction Supported: Not supported
      Emergency Power Reduction Initialization Required: off
      FRS Supported: off
    Device Control 2: 0x0000
      Completion Timeout Value: 50us to 50ms
      Completion Timeout Disabled: off
      ARI Forwarding Enabled: off
      AtomicOp Requester Enabled: off
      AtomicOp Egress Blocking: off
      IDO Request Enabled: off
      IDO Completion Enabled: off
      LTR Mechanism Enabled: off
      Emergency Power Reduction Request: off
      10-bit Tag Requester Enabled: off
      OBFF: Disabled
      End-End TLP Prefix Blocking on: off
    Link Control 2: 0x0002
      Target Link Speed: 5.0GT/s
      Enter Compliance Enabled: off
      HW Autonomous Speed Disabled: off
      Selectable De-emphasis: -6dB
      Transmit Margin: 0
      Enter Modified Compliance: off
      Compliance SOS: off
      Compliance Preset/De-emphasis: Preshoot 0.0dB, De-emphasis -6.0+-1.5dB
    Link Status 2: 0x0001
      Current De-emphasis Level: -3.5dB
      Equalization Complete: off
      Equalization Phase 1 Successful: off
      Equalization Phase 2 Successful: off
      Equalization Phase 3 Successful: off
      Link Equalization Request: off
      Retimer Presence Detected: off

  Device-dependent header:
    0x40: 0x00000000 0x00000000 0x00000000 0x00b6106b
    0x50: 0x06035801 0x00000000 0x0012a010 0x012c8fa0
    0x60: 0x00000810 0x00000d02 0x11020040 0x00000000
    0x70: 0x00000000 0x00000000 0x00000000 0x00000000
    0x80: 0x00000000 0x00000000 0x00010002 0x00000000
    0x90: 0x00000000 0x00000000 0x00000000 0x00000000
    0xa0: 0x00800005 0x00000000 0x00000000 0x00000000
    0xb0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xc0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xd0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xe0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xf0: 0x00000000 0x00000000 0x00000000 0x00000000

  Extended Capability Register at 0x100
    type: 0x000b (Vendor Unique)
    version: 1

  Extended Configuration Space:
    0x100: 0x0001000b 0x01010001 0x00000000 0x00000000
    0x110: 0x00010002 0x00000000 0x00000000 0x00000000
    0x120: 0x00000001 0x800000ff 0x00000000 0x00000001
    0x130: 0x00000000 0x00000000 0x00000000 0x00000000
    0x140: 0x00000000 0x00000000 0x00000000 0x00000000
    0x150: 0x00000000 0x00000000 0x00000000 0x00000000
    0x160: 0x00000000 0x00000000 0x00000000 0x00000000
    0x170: 0x00000000 0x00000000 0x00000000 0x00000000
    0x180: 0x00000000 0x00000000 0x00000000 0x00000000
    0x190: 0x00000000 0x00000000 0x00000000 0x00000000
    0x1a0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x1b0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x1c0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x1d0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x1e0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x1f0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x200: 0x00000000 0x00000000 0x00000000 0x00000000
    0x210: 0x00000000 0x00000000 0x00000000 0x00000000
    0x220: 0x00000000 0x00000000 0x00000000 0x00000000
    0x230: 0x00000000 0x00000000 0x00000000 0x00000000
    0x240: 0x00000000 0x00000000 0x00000000 0x00000000
    0x250: 0x00000000 0x00000000 0x00000000 0x00000000
    0x260: 0x00000000 0x00000000 0x00000000 0x00000000
    0x270: 0x00000000 0x00000000 0x00000000 0x00000000
    0x280: 0x00000000 0x00000000 0x00000000 0x00000000
    0x290: 0x00000000 0x00000000 0x00000000 0x00000000
    0x2a0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x2b0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x2c0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x2d0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x2e0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x2f0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x300: 0x00000000 0x00000000 0x00000000 0x00000000
    0x310: 0x00000000 0x00000000 0x00000000 0x00000000
    0x320: 0x00000000 0x00000000 0x00000000 0x00000000
    0x330: 0x00000000 0x00000000 0x00000000 0x00000000
    0x340: 0x00000000 0x00000000 0x00000000 0x00000000
    0x350: 0x00000000 0x00000000 0x00000000 0x00000000
    0x360: 0x00000000 0x00000000 0x00000000 0x00000000
    0x370: 0x00000000 0x00000000 0x00000000 0x00000000
    0x380: 0x00000000 0x00000000 0x00000000 0x00000000
    0x390: 0x00000000 0x00000000 0x00000000 0x00000000
    0x3a0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x3b0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x3c0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x3d0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x3e0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x3f0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x400: 0x00000000 0x00000000 0x00000000 0x00000000
    0x410: 0x00000000 0x00000000 0x00000000 0x00000000
    0x420: 0x00000000 0x00000000 0x00000000 0x00000000
    0x430: 0x00000000 0x00000000 0x00000000 0x00000000
    0x440: 0x00000000 0x00000000 0x00000000 0x00000000
    0x450: 0x00000000 0x00000000 0x00000000 0x00000000
    0x460: 0x00000000 0x00000000 0x00000000 0x00000000
    0x470: 0x00000000 0x00000000 0x00000000 0x00000000
    0x480: 0x00000000 0x00000000 0x00000000 0x00000000
    0x490: 0x00000000 0x00000000 0x00000000 0x00000000
    0x4a0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x4b0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x4c0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x4d0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x4e0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x4f0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x500: 0x00000000 0x00000000 0x00000000 0x00000000
    0x510: 0x00000000 0x00000000 0x00000000 0x00000000
    0x520: 0x00000000 0x00000000 0x00000000 0x00000000
    0x530: 0x00000000 0x00000000 0x00000000 0x00000000
    0x540: 0x00000000 0x00000000 0x00000000 0x00000000
    0x550: 0x00000000 0x00000000 0x00000000 0x00000000
    0x560: 0x00000000 0x00000000 0x00000000 0x00000000
    0x570: 0x00000000 0x00000000 0x00000000 0x00000000
    0x580: 0x00000000 0x00000000 0x00000000 0x00000000
    0x590: 0x00000000 0x00000000 0x00000000 0x00000000
    0x5a0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x5b0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x5c0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x5d0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x5e0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x5f0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x600: 0x00000000 0x00000000 0x00000000 0x00000000
    0x610: 0x00000000 0x00000000 0x00000000 0x00000000
    0x620: 0x00000000 0x00000000 0x00000000 0x00000000
    0x630: 0x00000000 0x00000000 0x00000000 0x00000000
    0x640: 0x00000000 0x00000000 0x00000000 0x00000000
    0x650: 0x00000000 0x00000000 0x00000000 0x00000000
    0x660: 0x00000000 0x00000000 0x00000000 0x00000000
    0x670: 0x00000000 0x00000000 0x00000000 0x00000000
    0x680: 0x00000000 0x00000000 0x00000000 0x00000000
    0x690: 0x00000000 0x00000000 0x00000000 0x00000000
    0x6a0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x6b0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x6c0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x6d0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x6e0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x6f0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x700: 0x00000000 0x00000000 0x00000000 0x00000000
    0x710: 0x00000000 0x00000000 0x00000000 0x00000000
    0x720: 0x00000000 0x00000000 0x00000000 0x00000000
    0x730: 0x00000000 0x00000000 0x00000000 0x00000000
    0x740: 0x00000000 0x00000000 0x00000000 0x00000000
    0x750: 0x00000000 0x00000000 0x00000000 0x00000000
    0x760: 0x00000000 0x00000000 0x00000000 0x00000000
    0x770: 0x00000000 0x00000000 0x00000000 0x00000000
    0x780: 0x00000000 0x00000000 0x00000000 0x00000000
    0x790: 0x00000000 0x00000000 0x00000000 0x00000000
    0x7a0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x7b0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x7c0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x7d0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x7e0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x7f0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x800: 0x00000000 0x00000000 0x00000000 0x00000000
    0x810: 0x00000000 0x00000000 0x00000000 0x00000000
    0x820: 0x00000000 0x00000000 0x00000000 0x00000000
    0x830: 0x00000000 0x00000000 0x00000000 0x00000000
    0x840: 0x00000000 0x00000000 0x00000000 0x00000000
    0x850: 0x00000000 0x00000000 0x00000000 0x00000000
    0x860: 0x00000000 0x00000000 0x00000000 0x00000000
    0x870: 0x00000000 0x00000000 0x00000000 0x00000000
    0x880: 0x00000000 0x00000000 0x00000000 0x00000000
    0x890: 0x00000000 0x00000000 0x00000000 0x00000000
    0x8a0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x8b0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x8c0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x8d0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x8e0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x8f0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x900: 0x00000000 0x00000000 0x00000000 0x00000000
    0x910: 0x00000000 0x00000000 0x00000000 0x00000000
    0x920: 0x00000000 0x00000000 0x00000000 0x00000000
    0x930: 0x00000000 0x00000000 0x00000000 0x00000000
    0x940: 0x00000000 0x00000000 0x00000000 0x00000000
    0x950: 0x00000000 0x00000000 0x00000000 0x00000000
    0x960: 0x00000000 0x00000000 0x00000000 0x00000000
    0x970: 0x00000000 0x00000000 0x00000000 0x00000000
    0x980: 0x00000000 0x00000000 0x00000000 0x00000000
    0x990: 0x00000000 0x00000000 0x00000000 0x00000000
    0x9a0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x9b0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x9c0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x9d0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x9e0: 0x00000000 0x00000000 0x00000000 0x00000000
    0x9f0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xa00: 0x00000000 0x00000000 0x00000000 0x00000000
    0xa10: 0x00000000 0x00000000 0x00000000 0x00000000
    0xa20: 0x00000000 0x00000000 0x00000000 0x00000000
    0xa30: 0x00000000 0x00000000 0x00000000 0x00000000
    0xa40: 0x00000000 0x00000000 0x00000000 0x00000000
    0xa50: 0x00000000 0x00000000 0x00000000 0x00000000
    0xa60: 0x00000000 0x00000000 0x00000000 0x00000000
    0xa70: 0x00000000 0x00000000 0x00000000 0x00000000
    0xa80: 0x00000000 0x00000000 0x00000000 0x00000000
    0xa90: 0x00000000 0x00000000 0x00000000 0x00000000
    0xaa0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xab0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xac0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xad0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xae0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xaf0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xb00: 0x00000000 0x00000000 0x00000000 0x00000000
    0xb10: 0x00000000 0x00000000 0x00000000 0x00000000
    0xb20: 0x00000000 0x00000000 0x00000000 0x00000000
    0xb30: 0x00000000 0x00000000 0x00000000 0x00000000
    0xb40: 0x00000000 0x00000000 0x00000000 0x00000000
    0xb50: 0x00000000 0x00000000 0x00000000 0x00000000
    0xb60: 0x00000000 0x00000000 0x00000000 0x00000000
    0xb70: 0x00000000 0x00000000 0x00000000 0x00000000
    0xb80: 0x00000000 0x00000000 0x00000000 0x00000000
    0xb90: 0x00000000 0x00000000 0x00000000 0x00000000
    0xba0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xbb0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xbc0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xbd0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xbe0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xbf0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xc00: 0x00000000 0x00000000 0x00000000 0x00000000
    0xc10: 0x00000000 0x00000000 0x00000000 0x00000000
    0xc20: 0x00000000 0x00000000 0x00000000 0x00000000
    0xc30: 0x00000000 0x00000000 0x00000000 0x00000000
    0xc40: 0x00000000 0x00000000 0x00000000 0x00000000
    0xc50: 0x00000000 0x00000000 0x00000000 0x00000000
    0xc60: 0x00000000 0x00000000 0x00000000 0x00000000
    0xc70: 0x00000000 0x00000000 0x00000000 0x00000000
    0xc80: 0x00000000 0x00000000 0x00000000 0x00000000
    0xc90: 0x00000000 0x00000000 0x00000000 0x00000000
    0xca0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xcb0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xcc0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xcd0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xce0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xcf0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xd00: 0x00000000 0x00000000 0x00000000 0x00000000
    0xd10: 0x00000000 0x00000000 0x00000000 0x00000000
    0xd20: 0x00000000 0x00000000 0x00000000 0x00000000
    0xd30: 0x00000000 0x00000000 0x00000000 0x00000000
    0xd40: 0x00000000 0x00000000 0x00000000 0x00000000
    0xd50: 0x00000000 0x00000000 0x00000000 0x00000000
    0xd60: 0x00000000 0x00000000 0x00000000 0x00000000
    0xd70: 0x00000000 0x00000000 0x00000000 0x00000000
    0xd80: 0x00000000 0x00000000 0x00000000 0x00000000
    0xd90: 0x00000000 0x00000000 0x00000000 0x00000000
    0xda0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xdb0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xdc0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xdd0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xde0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xdf0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xe00: 0x00000000 0x00000000 0x00000000 0x00000000
    0xe10: 0x00000000 0x00000000 0x00000000 0x00000000
    0xe20: 0x00000000 0x00000000 0x00000000 0x00000000
    0xe30: 0x00000000 0x00000000 0x00000000 0x00000000
    0xe40: 0x00000000 0x00000000 0x00000000 0x00000000
    0xe50: 0x00000000 0x00000000 0x00000000 0x00000000
    0xe60: 0x00000000 0x00000000 0x00000000 0x00000000
    0xe70: 0x00000000 0x00000000 0x00000000 0x00000000
    0xe80: 0x00000000 0x00000000 0x00000000 0x00000000
    0xe90: 0x00000000 0x00000000 0x00000000 0x00000000
    0xea0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xeb0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xec0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xed0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xee0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xef0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xf00: 0x00000000 0x00000000 0x00000000 0x00000000
    0xf10: 0x00000000 0x00000000 0x00000000 0x00000000
    0xf20: 0x00000000 0x00000000 0x00000000 0x00000000
    0xf30: 0x00000000 0x00000000 0x00000000 0x00000000
    0xf40: 0x00000000 0x00000000 0x00000000 0x00000000
    0xf50: 0x00000000 0x00000000 0x00000000 0x00000000
    0xf60: 0x00000000 0x00000000 0x00000000 0x00000000
    0xf70: 0x00000000 0x00000000 0x00000000 0x00000000
    0xf80: 0x00000000 0x00000000 0x00000000 0x00000000
    0xf90: 0x00000000 0x00000000 0x00000000 0x00000000
    0xfa0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xfb0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xfc0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xfd0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xfe0: 0x00000000 0x00000000 0x00000000 0x00000000
    0xff0: 0x00000000 0x00000000 0x00000000 0x00000000

If nobody has any other ideas, I will start poking around in radeon_r300.c:r300_init() and radeon_boot_test_post_card() and sys/external/bsd/drm2/pci/drm_pci.c and use panic() to see if I can get any interesting crash dumps or something.  Thanks for the help!

Kind regards,

    _____    
   | * * |   Josh Moyer (he/him) <JMoyer%NODOMAIN.NET@localhost>
   |*(*)*|   http://jmoyer.nodomain.net/
    \ - /    http://www.nodomain.net/
     \//     
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