[haiku-bugs] Re: [Haiku] #10404: Intel(R) GMA 950 doesn't work with Intel Extreme driver and with Vesa driver.
- From: "pulkomandy" <trac@xxxxxxxxxxxx>
- Date: Tue, 14 Jan 2014 07:13:51 -0000
#10404: Intel(R) GMA 950 doesn't work with Intel Extreme driver and with Vesa
driver.
----------------------------------------------+-------------------------
Reporter: walera | Owner: axeld
Type: bug | Status: new
Priority: high | Milestone: R1
Component: Drivers/Graphics/intel_extreme | Version: R1/alpha4.1
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: x86
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Comment (by pulkomandy):
Things look fine on the video driver initialization and mode setting side.
However I noticed this:
{{{
2263 KERN: add_memory_type_range(5414, 0xc0000000, 0x10000000, 0)
2264 KERN: set MTRRs to:
2265 KERN: mtrr: 0: base: 0xc0000000, size: 0x40000000, type: 0
2266 KERN: remove_memory_type_range(86, 0xc0000000, 0x300000, 1)
2267 KERN: set MTRRs to:
2268 KERN: mtrr: 0: base: 0xc0000000, size: 0x40000000, type: 0
2269 KERN: add_memory_type_range(5414, 0xc0000000, 0x10000000, 1)
2270 KERN: set MTRRs to:
2271 KERN: mtrr: 0: base: 0xcf691000, size: 0x1000, type: 0
2272 KERN: mtrr: 1: base: 0xcf697000, size: 0x1000, type: 0
2273 KERN: mtrr: 2: base: 0xcf698000, size: 0x1000, type: 0
2274 KERN: mtrr: 3: base: 0xd0000000, size: 0x10000000, type: 0
2275 KERN: mtrr: 4: base: 0xe0000000, size: 0x20000000, type: 0
2276 KERN: mtrr: 5: base: 0xc0000000, size: 0x40000000, type: 1
2277 KERN: loaded driver /boot/system/add-
ons/kernel/drivers/dev/net/pegasus
2278 KERN: add_memory_type_range(5422, 0x90000, 0x70000, 0)
2279 KERN: set MTRRs to:
2280 KERN: mtrr: 0: base: 0x90000, size: 0x10000, type: 0
2281 KERN: mtrr: 1: base: 0xa0000, size: 0x20000, type: 0
2282 KERN: mtrr: 2: base: 0xc0000, size: 0x40000, type: 0
2283 KERN: mtrr: 3: base: 0xd0000000, size: 0x10000000, type: 0
2284 KERN: mtrr: 4: base: 0xe0000000, size: 0x20000000, type: 0
2285 KERN: mtrr: 5: base: 0xc0000000, size: 0x40000000, type: 1
2286 KERN: update_mtrrs(): Succeeded setting MTRRs after ignoring
uncacheable ranges up to size 0x1000.
2287 KERN: remove_memory_type_range(5422, 0x90000, 0x70000, 0)
2288 KERN: set MTRRs to:
2289 KERN: mtrr: 0: base: 0xcf691000, size: 0x1000, type: 0
2290 KERN: mtrr: 1: base: 0xcf697000, size: 0x1000, type: 0
2291 KERN: mtrr: 2: base: 0xcf698000, size: 0x1000, type: 0
2292 KERN: mtrr: 3: base: 0xd0000000, size: 0x10000000, type: 0
2293 KERN: mtrr: 4: base: 0xe0000000, size: 0x20000000, type: 0
2294 KERN: mtrr: 5: base: 0xc0000000, size: 0x40000000, type: 1
}}}
There seem to be not enough MTRRs to set the complete memory caching map
somewhere during video init, then the problem goes away as a range is
unmapped.
Is this a 64-bit machine? I think in 64-bit mode, a better system can be
used for setting this, avoiding the limitation. If it isn't, maybe we'll
have to fix our MTRR allocation code again.
--
Ticket URL: <http://dev.haiku-os.org/ticket/10404#comment:3>
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