Date: Sat, 07 Dec 2013 01:07:43 +0100 From: =?ISO-8859-15?Q?Jean-S=E9bastien_P=E9dron?= <dumbbell@FreeBSD.org> To: John Baldwin <jhb@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r258930 - head/sys/dev/drm2 Message-ID: <52A266CF.90007@FreeBSD.org> In-Reply-To: <201312051005.23197.jhb@freebsd.org> References: <201312041904.rB4J4vbM043709@svn.freebsd.org> <201312041518.33731.jhb@freebsd.org> <52A04D2E.2040705@FreeBSD.org> <201312051005.23197.jhb@freebsd.org>
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Le 05/12/2013 16:05, John Baldwin a écrit :
>>> Eh, vgapci is the right place to read this. The LINK_CAP here is telling
>>> you the width of the slot you are plugged into, not the width of the card
>>> that is plugged into the slot.
>>
>> I'm sorry, my knowledge of PCI is very limited (still learning) and I
>> don't understand your comment. Could you please expand on it?
>
> [explanation]
Thank you very much for the explanation!
> Can you provide pciconf -lc output from your machine
You'll find it attached.
> and tell me what you think the function should be returning (i.e.
> are you trying to determine the speed of the slot, or the speed of
> the card?)
The result of this function is used to initialize the card (ie. it does
more steps if speed is 5.0). The debug message is "enabling PCIE gen 2
link speeds" in this case. I admit I don't know what the code is doing
exactly, so I haven't any expectation :)
What I see is that now, this part of the initialization is similar to
Linux 3.8 on the same computer: in both OSes, the PCI ID of the bridge
and the linkcap/linkcap2 values are logged, and the PCI ID/values are
matching.
--
Jean-Sébastien Pédron
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filename="magellan-pciconf-lc.txt"
hostb0@pci0:0:0:0: class=0x060000 card=0x86871558 chip=0xd1328086 rev=0x11 hdr=0x00
cap 00[40] = unknown
pcib1@pci0:0:3:0: class=0x060400 card=0x00008086 chip=0xd1388086 rev=0x11 hdr=0x01
cap 0d[40] = PCI Bridge card=0x00008086
cap 05[60] = MSI supports 2 messages, vector masks
cap 10[90] = PCI-Express 2 root port slot max data 256(256) link x16(x16)
speed 2.5(5.0)
cap 01[e0] = powerspec 3 supports D0 D3 current D0
ecap 0001[100] = AER 1 0 fatal 0 non-fatal 0 corrected
ecap 000d[150] = ACS 1
ecap 000b[160] = Vendor 0
none0@pci0:0:8:0: class=0x088000 card=0x00870058 chip=0xd1558086 rev=0x11 hdr=0x00
cap 10[40] = PCI-Express 2 root endpoint max data 128(128) link x0(x0)
ASPM disabled(L0s)
ecap 000b[100] = Vendor 0
none1@pci0:0:8:1: class=0x088000 card=0x00870058 chip=0xd1568086 rev=0x11 hdr=0x00
cap 10[40] = PCI-Express 2 root endpoint max data 128(128) link x0(x0)
ASPM disabled(L0s)
ecap 000b[100] = Vendor 0
none2@pci0:0:8:2: class=0x088000 card=0x00870058 chip=0xd1578086 rev=0x11 hdr=0x00
cap 10[40] = PCI-Express 2 root endpoint max data 128(128) link x0(x0)
ASPM disabled(L0s)
ecap 000b[100] = Vendor 0
none3@pci0:0:8:3: class=0x088000 card=0x00870058 chip=0xd1588086 rev=0x11 hdr=0x00
none4@pci0:0:16:0: class=0x088000 card=0x00870058 chip=0xd1508086 rev=0x11 hdr=0x00
none5@pci0:0:16:1: class=0x088000 card=0x00870058 chip=0xd1518086 rev=0x11 hdr=0x00
ehci0@pci0:0:26:0: class=0x0c0320 card=0x86871558 chip=0x3b3c8086 rev=0x05 hdr=0x00
cap 01[50] = powerspec 2 supports D0 D3 current D0
cap 0a[58] = EHCI Debug Port at offset 0xa0 in map 0x14
cap 13[98] = PCI Advanced Features: FLR TP
hdac1@pci0:0:27:0: class=0x040300 card=0x86871558 chip=0x3b568086 rev=0x05 hdr=0x00
cap 01[50] = powerspec 2 supports D0 D3 current D0
cap 05[60] = MSI supports 1 message, 64 bit enabled with 1 message
cap 10[70] = PCI-Express 1 root endpoint max data 128(128) FLR link x0(x0)
ecap 0002[100] = VC 1 max VC1
ecap 0005[130] = Root Complex Link Declaration 1
pcib2@pci0:0:28:0: class=0x060400 card=0x86871558 chip=0x3b428086 rev=0x05 hdr=0x01
cap 10[40] = PCI-Express 2 root port slot max data 128(128) link x1(x1)
speed 2.5(2.5) ASPM disabled(L0s/L1)
cap 05[80] = MSI supports 1 message
cap 0d[90] = PCI Bridge card=0x86871558
cap 01[a0] = powerspec 2 supports D0 D3 current D0
pcib3@pci0:0:28:1: class=0x060400 card=0x86871558 chip=0x3b448086 rev=0x05 hdr=0x01
cap 10[40] = PCI-Express 2 root port slot max data 128(128) link x0(x1)
speed 0.0(2.5) ASPM disabled(L0s/L1)
cap 05[80] = MSI supports 1 message
cap 0d[90] = PCI Bridge card=0x86871558
cap 01[a0] = powerspec 2 supports D0 D3 current D0
pcib4@pci0:0:28:3: class=0x060400 card=0x86871558 chip=0x3b488086 rev=0x05 hdr=0x01
cap 10[40] = PCI-Express 2 root port slot max data 128(128) link x1(x1)
speed 2.5(2.5) ASPM disabled(L0s/L1)
cap 05[80] = MSI supports 1 message
cap 0d[90] = PCI Bridge card=0x86871558
cap 01[a0] = powerspec 2 supports D0 D3 current D0
pcib5@pci0:0:28:4: class=0x060400 card=0x86871558 chip=0x3b4a8086 rev=0x05 hdr=0x01
cap 10[40] = PCI-Express 2 root port slot max data 128(128) link x1(x1)
speed 2.5(2.5) ASPM disabled(L0s/L1)
cap 05[80] = MSI supports 1 message
cap 0d[90] = PCI Bridge card=0x86871558
cap 01[a0] = powerspec 2 supports D0 D3 current D0
pcib6@pci0:0:28:7: class=0x060400 card=0x86871558 chip=0x3b508086 rev=0x05 hdr=0x01
cap 10[40] = PCI-Express 2 root port slot max data 128(128) link x0(x1)
speed 0.0(2.5) ASPM disabled(L0s/L1)
cap 05[80] = MSI supports 1 message
cap 0d[90] = PCI Bridge card=0x86871558
cap 01[a0] = powerspec 2 supports D0 D3 current D0
ehci1@pci0:0:29:0: class=0x0c0320 card=0x86871558 chip=0x3b348086 rev=0x05 hdr=0x00
cap 01[50] = powerspec 2 supports D0 D3 current D0
cap 0a[58] = EHCI Debug Port at offset 0xa0 in map 0x14
cap 13[98] = PCI Advanced Features: FLR TP
pcib7@pci0:0:30:0: class=0x060401 card=0x86871558 chip=0x24488086 rev=0xa5 hdr=0x01
cap 0d[50] = PCI Bridge card=0x86871558
isab0@pci0:0:31:0: class=0x060100 card=0x86871558 chip=0x3b038086 rev=0x05 hdr=0x00
cap 09[e0] = vendor (length 16) Intel cap 1 version 1
ahci0@pci0:0:31:2: class=0x010601 card=0x86871558 chip=0x3b2f8086 rev=0x05 hdr=0x00
cap 05[80] = MSI supports 1 message enabled with 1 message
cap 01[70] = powerspec 3 supports D0 D3 current D0
cap 12[a8] = SATA Index-Data Pair
cap 13[b0] = PCI Advanced Features: FLR TP
none6@pci0:0:31:3: class=0x0c0500 card=0x86871558 chip=0x3b308086 rev=0x05 hdr=0x00
vgapci0@pci0:2:0:0: class=0x030000 card=0x86871558 chip=0x68a01002 rev=0x00 hdr=0x00
cap 01[50] = powerspec 3 supports D0 D1 D2 D3 current D0
cap 10[58] = PCI-Express 2 legacy endpoint max data 256(256) link x16(x16)
speed 2.5(2.5) ASPM disabled(L0s/L1)
cap 05[a0] = MSI supports 1 message, 64 bit
ecap 000b[100] = Vendor 1 ID 1
ecap 0001[150] = AER 1 0 fatal 1 non-fatal 1 corrected
hdac0@pci0:2:0:1: class=0x040300 card=0x86871558 chip=0xaa581002 rev=0x00 hdr=0x00
cap 01[50] = powerspec 3 supports D0 D1 D2 D3 current D0
cap 10[58] = PCI-Express 2 legacy endpoint max data 256(256) link x16(x16)
speed 2.5(2.5) ASPM disabled(L0s/L1)
cap 05[a0] = MSI supports 1 message, 64 bit enabled with 1 message
ecap 000b[100] = Vendor 1 ID 1
ecap 0001[150] = AER 1 0 fatal 1 non-fatal 1 corrected
iwn0@pci0:3:0:0: class=0x028000 card=0x11218086 chip=0x42358086 rev=0x00 hdr=0x00
cap 01[c8] = powerspec 3 supports D0 D3 current D0
cap 05[d0] = MSI supports 1 message, 64 bit enabled with 1 message
cap 10[e0] = PCI-Express 1 endpoint max data 128(128) FLR link x1(x1)
speed 2.5(2.5) ASPM disabled(L0s/L1)
ecap 0001[100] = AER 1 0 fatal 0 non-fatal 1 corrected
ecap 0003[140] = Serial 1 00216affff5aec90
re0@pci0:7:0:0: class=0x020000 card=0x86871558 chip=0x816810ec rev=0x03 hdr=0x00
cap 01[40] = powerspec 3 supports D0 D1 D2 D3 current D0
cap 05[50] = MSI supports 1 message, 64 bit
cap 10[70] = PCI-Express 2 endpoint IRQ 1 max data 128(256) link x1(x1)
speed 2.5(2.5) ASPM disabled(L0s/L1)
cap 11[ac] = MSI-X supports 4 messages, enabled
Table in map 0x20[0x0], PBA in map 0x20[0x800]
cap 03[cc] = VPD
ecap 0001[100] = AER 1 0 fatal 0 non-fatal 1 corrected
ecap 0002[140] = VC 1 max VC0
ecap 0003[160] = Serial 1 03000000684ce000
none7@pci0:9:0:0: class=0x0c0010 card=0x86871558 chip=0x2380197b rev=0x00 hdr=0x00
cap 01[44] = powerspec 3 supports D0 D3 current D3
cap 10[80] = PCI-Express 1 endpoint max data 128(128) link x1(x1)
speed 2.5(2.5) ASPM disabled(L0s/L1)
cap 05[94] = MSI supports 1 message
none8@pci0:9:0:1: class=0x088000 card=0x86871558 chip=0x2382197b rev=0x00 hdr=0x00
cap 01[a4] = powerspec 3 supports D0 D3 current D3
cap 10[80] = PCI-Express 1 endpoint max data 128(128) link x1(x1)
speed 2.5(2.5) ASPM disabled(L0s/L1)
cap 05[94] = MSI supports 1 message
sdhci_pci0@pci0:9:0:2: class=0x080501 card=0x86871558 chip=0x2381197b rev=0x00 hdr=0x00
cap 01[a4] = powerspec 3 supports D0 D3 current D0
cap 10[80] = PCI-Express 1 endpoint max data 128(128) link x1(x1)
speed 2.5(2.5) ASPM disabled(L0s/L1)
cap 05[94] = MSI supports 1 message
none9@pci0:9:0:3: class=0x088000 card=0x86871558 chip=0x2383197b rev=0x00 hdr=0x00
cap 01[a4] = powerspec 3 supports D0 D3 current D3
cap 10[80] = PCI-Express 1 endpoint max data 128(128) link x1(x1)
speed 2.5(2.5) ASPM disabled(L0s/L1)
cap 05[94] = MSI supports 1 message
hostb1@pci0:255:0:0: class=0x060000 card=0x80868086 chip=0x2c528086 rev=0x04 hdr=0x00
hostb2@pci0:255:0:1: class=0x060000 card=0x80868086 chip=0x2c818086 rev=0x04 hdr=0x00
hostb3@pci0:255:2:0: class=0x060000 card=0x80868086 chip=0x2c908086 rev=0x04 hdr=0x00
hostb4@pci0:255:2:1: class=0x060000 card=0x80868086 chip=0x2c918086 rev=0x04 hdr=0x00
hostb5@pci0:255:3:0: class=0x060000 card=0x80868086 chip=0x2c988086 rev=0x04 hdr=0x00
hostb6@pci0:255:3:1: class=0x060000 card=0x80868086 chip=0x2c998086 rev=0x04 hdr=0x00
hostb7@pci0:255:3:4: class=0x060000 card=0x80868086 chip=0x2c9c8086 rev=0x04 hdr=0x00
hostb8@pci0:255:4:0: class=0x060000 card=0x80868086 chip=0x2ca08086 rev=0x04 hdr=0x00
hostb9@pci0:255:4:1: class=0x060000 card=0x80868086 chip=0x2ca18086 rev=0x04 hdr=0x00
hostb10@pci0:255:4:2: class=0x060000 card=0x80868086 chip=0x2ca28086 rev=0x04 hdr=0x00
hostb11@pci0:255:4:3: class=0x060000 card=0x80868086 chip=0x2ca38086 rev=0x04 hdr=0x00
hostb12@pci0:255:5:0: class=0x060000 card=0x80868086 chip=0x2ca88086 rev=0x04 hdr=0x00
hostb13@pci0:255:5:1: class=0x060000 card=0x80868086 chip=0x2ca98086 rev=0x04 hdr=0x00
hostb14@pci0:255:5:2: class=0x060000 card=0x80868086 chip=0x2caa8086 rev=0x04 hdr=0x00
hostb15@pci0:255:5:3: class=0x060000 card=0x80868086 chip=0x2cab8086 rev=0x04 hdr=0x00
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