Using a netbsd-7 kernel based on DRMKMS, but with pcdisplay and vga0 at isa
disabled, I observed the following:
With console on serial port, the machine eventually hangs during
radeondrmkms initialization. A power-cycle is the only way to regain
control (can't BREAK into DDB). Relevant excerpted "dmesg" captured on
serial console:
NetBSD 7.0_BETA (SLAB_KMS) #11: Mon Feb 16 17:20:57 CST 2015
sysop@verthandi.technoskunk.fur:/d0/build/netbsd-7/obj/i386/sys/arch/i386/compile/SLAB_KMS
total memory = 2047 MB
avail memory = 2001 MB
[...]
acpivga0 at acpi0 (VID): ACPI Display Adapter
acpivga0: capabilities: _DOS _DOD
acpiout0 at acpivga0 (LCD0, 0x0110): ACPI Display Output Device
acpiout0: capabilities: _DDC _DCS _DGS _DSS
acpiout1 at acpivga0 (CRT0, 0x0100): ACPI Display Output Device
acpiout1: capabilities: _DDC _DCS _DGS _DSS
acpiout2 at acpivga0 (TV0, 0x0200): ACPI Display Output Device
acpiout2: capabilities: _DDC _DCS _DGS _DSS
acpiout3 at acpivga0 (DVI0, 0x0210): ACPI Display Output Device
acpiout3: capabilities: _DCS _DGS _DSS
acpivga0: connected output devices:
acpivga0: 0x0110 (acpiout0): LCD Panel, head 0
acpivga0: 0x0100 (acpiout1): Ext. Monitor, head 0
acpivga0: 0x0200 (acpiout2): TV, head 0
acpivga0: 0x0210 (acpiout3): Unknown Output Device, head 0
[...]
pchb0 at pci0 dev 0 function 0: Intel 82845 Host (rev. 0x04)
agp0 at pchb0: aperture at 0xe0000000, size 0x4000000
ppb0 at pci0 dev 1 function 0: Intel 82845 AGP (rev. 0x04)
pci1 at ppb0 bus 1
pci1: i/o space, memory space enabled
radeon0 at pci1 dev 0 function 0: ATI Technologies FireGL Mobility 7800 M7 LX (rev. 0x00)
radeon0: WARNING: power management not supported
[...]
pci_mem_find: void region
pci_mem_find: void region
pci_mem_find: void region
pci_mem_find: void region
radeon0: map 3 failed
pci_mem_find: void region
radeon0: map 4 failed
pci_mem_find: void region
radeon0: map 5 failed
DRM debug in drm_minor_register:
DRM debug in drm_minor_register: new minor assigned 64
DRM debug in drm_minor_register:
DRM debug in drm_minor_register:
DRM debug in drm_minor_register: new minor assigned 0
drm: initializing kernel modesetting (RV200 0x1002:0x4C58 0x1014:0x0518).
drm: register mmio base: 0xd0100000
drm: register mmio size: 65536
pci_io_find: expected type i/o, found mem
DRM debug in radeon_get_bios: COMBIOS detected
radeon0: info: GTT: 64M 0xE0000000 - 0xE3FFFFFF
radeon0: info: VRAM: 128M 0x00000000E8000000 - 0x00000000EFFFFFFF (64M used)
drm: Detected VRAM RAM=80M, BAR=128M
drm: RAM width 128bits DDR
Zone kernel: Available graphics memory: 801714 kiB
drm: radeon: 64M of VRAM memory ready
drm: radeon: 64M of GTT memory ready.
DRM debug in radeon_pm_print_states: 1 Power State(s)
DRM debug in radeon_pm_print_states: State 0:
DRM debug in radeon_pm_print_states: DefaultDRM debug in radeon_pm_print_states: 1 Clock Mode(s)
DRM debug in radeon_pm_print_states: 0 e: 260000 m: 183000 v: 0
[hangs here]
With console on video, radeondrmkms attaches and works well for text
operations. Booting with "-x" spams the console relatively forever with
timing/position calculation messages. (I let it run for 8 hours and it
never got around to exec()-ing 'init'.) Same "dmesg" excerpts for
comparison:
NetBSD 7.0_BETA (SLAB_KMS) #11: Mon Feb 16 17:20:57 CST 2015
sysop@verthandi.technoskunk.fur:/d0/build/netbsd-7/obj/i386/sys/arch/i386/compile/SLAB_KMS
total memory = 2047 MB
avail memory = 2001 MB
[...]
acpivga0 at acpi0 (VID): ACPI Display Adapter
acpiout0 at acpivga0 (LCD0, 0x0110): ACPI Display Output Device
acpiout1 at acpivga0 (CRT0, 0x0100): ACPI Display Output Device
acpiout2 at acpivga0 (TV0, 0x0200): ACPI Display Output Device
acpiout3 at acpivga0 (DVI0, 0x0210): ACPI Display Output Device
acpivga0: connected output devices:
acpivga0: 0x0110 (acpiout0): LCD Panel, head 0
acpivga0: 0x0100 (acpiout1): Ext. Monitor, head 0
acpivga0: 0x0200 (acpiout2): TV, head 0
acpivga0: 0x0210 (acpiout3): Unknown Output Device, head 0
[...]
pchb0 at pci0 dev 0 function 0: Intel 82845 Host (rev. 0x04)
agp0 at pchb0: aperture at 0xe0000000, size 0x4000000
ppb0 at pci0 dev 1 function 0: Intel 82845 AGP (rev. 0x04)
pci1 at ppb0 bus 1
pci1: i/o space, memory space enabled
radeon0 at pci1 dev 0 function 0: ATI Technologies FireGL Mobility 7800 M7 LX (rev. 0x00)
[...]
drm: initializing kernel modesetting (RV200 0x1002:0x4C58 0x1014:0x0518).
drm: register mmio base: 0xd0100000
drm: register mmio size: 65536
radeon0: info: GTT: 64M 0xE0000000 - 0xE3FFFFFF
radeon0: info: VRAM: 128M 0x00000000E8000000 - 0x00000000EFFFFFFF (64M used)
drm: Detected VRAM RAM=80M, BAR=128M
drm: RAM width 128bits DDR
Zone kernel: Available graphics memory: 801714 kiB
drm: radeon: 64M of VRAM memory ready
drm: radeon: 64M of GTT memory ready.
radeon0: info: WB disabled
radeon0: info: fence driver on ring 0 use gpu addr 0x00000000e0000000 and cpu addr 0x0xdb47e000
drm: Supports vblank timestamp caching Rev 2 (21.10.2013).
drm: Driver supports precise vblank timestamp query.
radeon0: interrupting at irq 9 (radeon)
drm: radeon: irq initialized.
drm: Loading R100 Microcode
init: copying out path `/sbin/init' 11
drm: radeon: ring at 0x00000000E0001000
drm: ring test succeeded in 0 usecs
drm: ib test succeeded in 0 usecs
drm: Panel ID String: 1600x1200
drm: Panel Size 1600x1200
drm: No TV DAC info found in BIOS
drm: Radeon Display Connectors
drm: Connector 0:
drm: VGA-1
drm: DDC: 0x60 0x60 0x60 0x60 0x60 0x60 0x60 0x60
drm: Encoders:
drm: CRT1: INTERNAL_DAC1
drm: Connector 1:
drm: DVI-D-1
drm: HPD1
drm: DDC: 0x64 0x64 0x64 0x64 0x64 0x64 0x64 0x64
drm: Encoders:
drm: DFP1: INTERNAL_TMDS1
drm: Connector 2:
drm: LVDS-1
drm: Encoders:
drm: LCD1: INTERNAL_LVDS
drm: Connector 3:
drm: SVIDEO-1
drm: Encoders:
drm: TV1: INTERNAL_DAC2
radeondrmkmsfb0 at radeon0
radeon0: info: registered panic notifier
radeondrmkmsfb0: framebuffer at 0xdb685000, size 1600x1200, depth 32, stride 6400
wsdisplay0 at radeondrmkmsfb0 kbdmux 1: console (default, vt100 emulation), using wskbd0
wsmux1: connecting to wsdisplay0
Starting X gets as far as displaying the X cursor which changes to a
"watch face" glyph (is that X or fvwm at that point? I forget). Then
the screen goes black and the machine is completely hung requiring a
power-cycle to regain control.
--
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