* 2.4.21-rc6-ac1 PCMCIA: Cardbus bridge behind transparent P2P bridge
@ 2003-06-04 6:42 Shashi Rao
0 siblings, 0 replies; only message in thread
From: Shashi Rao @ 2003-06-04 6:42 UTC (permalink / raw)
To: linux-kernel
Hi
Both in-kernel and standalone PCMCIA stopped working on my laptop with 2.4.20
and above. I have a fix for it, but dont quite understand why/how it works.
My report focuses on the in-kernel PCMCIA support, yenta.c etc, compiled as
modules.
Hardware: Sony Vaio PCG-R505DS, an ACPI-only laptop with a builtin Orinoco
PC-card behind a TI PCI1410 cardbus bridge, and another unpopulated external
socket behind a Ricoh RL5c475 bridge. Both these cardbus bridges live behind
a "hub-to-pci" 82801BAM.
lspci -vt yields:
-[00]-+-00.0 Intel Corp. 82830 830 Chipset Host Bridge
+-02.0 Intel Corp. 82830 CGC [Chipset Graphics Controller]
+-02.1 Intel Corp. 82830 CGC [Chipset Graphics Controller]
+-1d.0 Intel Corp. 82801CA/CAM USB (Hub #1)
+-1d.1 Intel Corp. 82801CA/CAM USB (Hub #2)
+-1d.2 Intel Corp. 82801CA/CAM USB (Hub #3)
+-1e.0-[02]--+-02.0 Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link)
| +-05.0 Ricoh Co Ltd RL5c475
| +-08.0 Intel Corp. 82801CAM (ICH3) PRO/100 VE (LOM) Ethernet Controller
| \-0b.0 Texas Instruments PCI1410 PC card Cardbus Controller
+-1f.0 Intel Corp. 82801CAM ISA Bridge (LPC)
+-1f.1 Intel Corp. 82801CAM IDE U100
+-1f.3 Intel Corp. 82801CA/CAM SMBus
+-1f.5 Intel Corp. 82801CA/CAM AC'97 Audio
\-1f.6 Intel Corp. 82801CA/CAM AC'97 Modem
Data from a "clean" 2.4.21-rc6-ac1 boot:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/proc/iomem
00000000-0009dfff : System RAM
0009e000-0009ffff : reserved
000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM
000d8000-000dffff : reserved
000e0000-000e0fff : card services
000f0000-000fffff : System ROM
00100000-27ceffff : System RAM
00100000-0022aebe : Kernel code
0022aebf-002a985f : Kernel data
27cf0000-27cfbfff : ACPI Tables
27cfc000-27cfffff : ACPI Non-volatile Storage
27d00000-27e7ffff : System RAM
27f00000-27f00fff : Ricoh Co Ltd RL5c475
27f01000-27f01fff : Texas Instruments PCI1410 PC card Cardbus Controller
28000000-283fffff : PCI CardBus #03
28400000-287fffff : PCI CardBus #03
28800000-28bfffff : PCI CardBus #07
28c00000-28ffffff : PCI CardBus #07
e0000000-e007ffff : Intel Corp. 82830 CGC [Chipset Graphics Controller]
e0000000-e007ffff : intelfb
e0080000-e00fffff : Intel Corp. 82830 CGC [Chipset Graphics Controller] (#2)
e0100000-e01003ff : Intel Corp. 82801CAM IDE U100
e0200000-e0203fff : Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link)
e0204000-e0204fff : Intel Corp. 82801CAM (ICH3) PRO/100 VE (LOM) Ethernet Controller
e0204000-e0204fff : eepro100
e0205000-e02057ff : Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link)
e0205000-e02057ff : ohci1394
e8000000-efffffff : Intel Corp. 82830 CGC [Chipset Graphics Controller]
e8000000-efffffff : intelfb
f0000000-f7ffffff : Intel Corp. 82830 CGC [Chipset Graphics Controller] (#2)
lspci -vvxxx -s 2:b.0
02:0b.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus Controller (rev 01)
Subsystem: Lucent Technologies: Unknown device ab01
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 168, cache line size 08
Interrupt: pin A routed to IRQ 9
Region 0: Memory at 27f01000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=02, secondary=07, subordinate=0a, sec-latency=176
Memory window 0: 28800000-28bff000 (prefetchable)
Memory window 1: 28c00000-28fff000
I/O window 0: 00004800-000048ff
I/O window 1: 00004c00-00004cff
BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset+ 16bInt+ PostWrite+
16-bit legacy interface ports at 0001
00: 4c 10 50 ac 07 00 10 02 01 00 07 06 08 a8 02 00
10: 00 10 f0 27 a0 00 00 02 02 07 0a b0 00 00 80 28
20: 00 f0 bf 28 00 00 c0 28 00 f0 ff 28 00 48 00 00
30: fc 48 00 00 00 4c 00 00 fc 4c 00 00 ff 01 c0 05
40: a3 12 01 ab 01 00 00 00 00 00 00 00 00 00 00 00
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 60 90 44 00 00 00 00 00 00 00 00 00 22 00 00 01
90: c0 00 60 61 00 00 00 00 00 00 00 00 00 00 00 00
a0: 01 00 11 fe 00 00 c0 00 0e 08 00 00 1b 00 00 00
b0: 00 00 00 08 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Here is a patch that refuses to view the 82801BAM as a subtractive decoding
agent (Before 2.4.20, this bridge was treated as a non-transparent positive
decoding bridge). This restores PCMCIA functionality on both the cardbus
bridges.
diff -u --new-file --recursive linux.21rc6-ac1-clean/arch/i386/kernel/pci-pc.c linux.21rc6-ac1-patched/arch/i386/kernel/pci-pc.c
--- linux.21rc6-ac1-clean/arch/i386/kernel/pci-pc.c Tue Jun 3 22:26:40 2003
+++ linux.21rc6-ac1-patched/arch/i386/kernel/pci-pc.c Tue Jun 3 22:29:12 2003
@@ -1341,7 +1341,7 @@
{ PCI_FIXUP_HEADER, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, pci_fixup_via_northbridge_bug },
{ PCI_FIXUP_HEADER, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8367_0, pci_fixup_via_northbridge_bug },
{ PCI_FIXUP_HEADER, PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, pci_fixup_ncr53c810 },
- { PCI_FIXUP_HEADER, PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_fixup_transparent_bridge },
+/* { PCI_FIXUP_HEADER, PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_fixup_transparent_bridge }, */
{ 0 }
};
Here are the data from the corresponding [successful] boot:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/proc/iomem
00000000-0009e7ff : System RAM
0009e800-0009ffff : reserved
000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM
000dc000-000dffff : Extension ROM
000f0000-000fffff : System ROM
00100000-27ceffff : System RAM
00100000-0022aebe : Kernel code
0022aebf-002a985f : Kernel data
27cf0000-27cfbfff : ACPI Tables
27cfc000-27cfffff : ACPI Non-volatile Storage
27d00000-27e7ffff : System RAM
e0000000-e007ffff : Intel Corp. 82830 CGC [Chipset Graphics Controller]
e0000000-e007ffff : intelfb
e0080000-e00fffff : Intel Corp. 82830 CGC [Chipset Graphics Controller] (#2)
e0100000-e01003ff : Intel Corp. 82801CAM IDE U100
e0200000-e02fffff : PCI Bus #02
e0200000-e0203fff : Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link)
e0204000-e0204fff : Intel Corp. 82801CAM (ICH3) PRO/100 VE (LOM) Ethernet Controller
e0204000-e0204fff : eepro100
e0205000-e02057ff : Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link)
e0205000-e02057ff : ohci1394
e0206000-e0206fff : Ricoh Co Ltd RL5c475
e0207000-e0207fff : Texas Instruments PCI1410 PC card Cardbus Controller
e0220000-e023ffff : PCI CardBus #03
e0240000-e025ffff : PCI CardBus #03
e0260000-e027ffff : PCI CardBus #07
e0280000-e029ffff : PCI CardBus #07
e8000000-efffffff : Intel Corp. 82830 CGC [Chipset Graphics Controller]
e8000000-efffffff : intelfb
f0000000-f7ffffff : Intel Corp. 82830 CGC [Chipset Graphics Controller] (#2)
fabfd000-fabfdfff : card services
lspci -vvxxx -s 2:b.0
02:0b.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus Controller (rev 01)
Subsystem: Lucent Technologies: Unknown device ab01
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 168, cache line size 08
Interrupt: pin A routed to IRQ 9
Region 0: Memory at e0207000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=02, secondary=07, subordinate=0a, sec-latency=176
Memory window 0: e0260000-e027f000 (prefetchable)
Memory window 1: e0280000-e029f000
I/O window 0: 00000000-00000003
I/O window 1: 00000000-00000003
BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset+ 16bInt- PostWrite+
16-bit legacy interface ports at 0001
00: 4c 10 50 ac 07 00 10 02 01 00 07 06 08 a8 02 00
10: 00 70 20 e0 a0 00 00 02 02 07 0a b0 00 00 26 e0
20: 00 f0 27 e0 00 00 28 e0 00 f0 29 e0 00 00 00 00
30: 00 00 00 00 00 00 00 00 00 00 00 00 ff 01 40 05
40: a3 12 01 ab 01 00 00 00 00 00 00 00 00 00 00 00
50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80: 60 b0 44 00 00 00 00 00 00 00 00 00 22 00 00 01
90: c0 00 60 61 00 00 00 00 00 00 00 00 00 00 00 00
a0: 01 00 11 fe 00 00 c0 00 0e 08 00 00 1b 00 00 00
b0: 00 00 00 08 00 00 00 00 00 00 00 00 00 00 00 00
c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Some differences/points of note for the TI bridge:
a) Manfred Spraul's adaptive resource allocation is in effect
b) The CB_BRIDGE_CONTROL register's INTR bit changes value [offset 0x3e, bit 7]
c) I/O windows didnt get assigned after the patch
Also, my firewire DVD/CDRW drive, which lives behind the 82801 as well, works
fine both before and after the patch. I'd be happy to provide more
information.
Hmm.
Cheers,
Shashi
--
Shashi Rao, skrao@users.sourceforge.net
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