* Re: 2.3 on 850 [not found] <38C82F79.2094DDEF@amberdata.demon.co.uk> @ 2000-03-10 12:38 ` Gabriel Paubert 2000-03-10 20:01 ` David Monro 0 siblings, 1 reply; 3+ messages in thread From: Gabriel Paubert @ 2000-03-10 12:38 UTC (permalink / raw) To: David Monro Cc: Hollis R Blanchard, Linux/ppc Workstation List, Linux/ppc Dev List On Thu, 9 Mar 2000, David Monro wrote: > Well I've had a little look at this today, and something is a bit > twisted. I've compiled it up with no vga console or framebuffer built > in, just the serial console. I get some interesting output: > > loaded at: 00480410 00495230 > relocated to: 00800000 00814E20 > board data at: 00121FE0 001289EC > relocated to: 0080E314 00814D20 > zimage at: 0048B410 0053054E > relocated to: 00815000 008BA13E > avail ram: 00400000 00800000 > > Linux/PPC load: console=ttyS0,9600 hdc=swapdata hda=3079,64,32 > root=/dev/hda5 -b > Uncompressing > Linux...done. > Now booting the kernel > PReP architecture > Total memory = 160MB; using 1024kB for hash table (at c0300000) > Linux version 2.3.50 (davidm@fuzzbox) (gcc version 2.95.2 19991024 > (release)) #2 Thu Mar 9 22:37:05 GMT 2000 > kmem_alloc: NULL ptr (name=unknown) > Boot arguments: > kmem_alloc: NULL ptr (name=unknown) > kmem_alloc: NULL ptr (name=unknown) > kmem_alloc: NULL ptr (name=unknown) > kmem_alloc: NULL ptr (name=unknown) > kmem_alloc: NULL ptr (name=unknown) > kmem_alloc: NULL ptr (name=unknown) > On node 0 totalpages: 40960 > zone(0): 40960 pages. > zone(1): 0 pages. > zone(2): 0 pages. > > What happened to my boot arguments????? Don't know, perhaps problems with this bootinfo thing... > Further down: > Setting PCI interrupts for a "IBM 8xx (Carolina)" > Relocating PCI address 20000000 -> 1000000 > PCI: Address space collision on region 0 of device Symbios Logic Inc. > (formerly NCR) 53c825 > PCI: Address space collision on region 0 of device Weitek P9100 > PCI: Address space collision on region 6 of device Weitek P9100 > > This is sort of OK. What has happened here is that the '825 has an I/O > region at 0x01000000, and the P9100 has a memory region as 0x01000000. Is it an I/O or a memory region ? Anyway the remapping in the kernel is dangerous and something is wrong as soon as you get this kind of message (except for the ROM). I solved the problem in my bootloader by reallocating all PCI resources from scratch, making sure there would never be any conflict. > Is this legal or not? The collision on address space 6 is almost > certainly the bios at 0xc0000 clashing with the one for the onboard S3 > 864. Since the P9100 doesn't actually have a bios in the rom socket I'm > not too worried about this :-) Even then, it means that 2 slaves might respond to an acess at ISA memory space at 0xc0000 if both ROMs are enabled, and cause conflicts on the bus. The other one is definitely serious. what do /proc/ioports /proc/iomem and /proc/pci (or lspci -vvxxx) report ? FYI that's what I get on my boards: [root@vcorr1 linux-test]# cat /proc/ioports 00000000-0000001f : dma1 00000020-0000003f : pic1 00000040-0000005f : timer 00000074-00000077 : PreP NVRAM 00000080-0000008f : dma page reg 000000a0-000000bf : pic2 000000c0-000000df : dma2 00000170-00000177 : Symphony Labs SL82c105 000001f0-000001f7 : Symphony Labs SL82c105 000002f8-000002ff : serial(auto) 00000376-00000376 : Symphony Labs SL82c105 000003c0-000003df : vga+ 000003f6-000003f6 : Symphony Labs SL82c105 000003f8-000003ff : serial(auto) 00010000-000100ff : Symbios Logic Inc. (formerly NCR) 53c825 00010000-0001007f : ncr53c8xx 00010100-0001017f : Digital Equipment Corporation DECchip 21140 [FasterNet] 00010100-0001017f : DC21140 (eth0) 00010180-0001018f : Symphony Labs SL82c105 00010190-0001019f : Symphony Labs SL82c105 [root@vcorr1 linux-test]# cat /proc/iomem fc6b0000-fc6bffff : S3 Inc. 86c764/765 [Trio32/64/64V+] fc6c0000-fc6fffff : Digital Equipment Corporation DECchip 21140 [FasterNet] fc7aee80-fc7aeeff : Digital Equipment Corporation DECchip 21140 [FasterNet] fc7aef00-fc7aefff : Symbios Logic Inc. (formerly NCR) 53c825 fc7af000-fc7affff : Symbios Logic Inc. (formerly NCR) 53c825 fc7b0000-fc7bffff : Tundra Semiconductor Corp. CA91C042 [Universe] fc7c0000-fc7fffff : Motorola Raven fc800000-fcffffff : S3 Inc. 86c764/765 [Trio32/64/64V+] (the first 2 are ROMs although there is no actual ROM on the Ethernet chip) [root@vcorr1 linux-test]# cat /proc/pci PCI devices found: Bus 0, device 0, function 0: Host bridge: Motorola Raven (rev 1). I/O at 0x0 [0xffff]. Non-prefetchable 32 bit memory at 0xfc7c0000 [0xfc7fffff]. Bus 0, device 11, function 0: ISA bridge: Symphony Labs W83C553 (rev 4). Bus 0, device 11, function 1: IDE interface: Symphony Labs SL82c105 (rev 5). Master Capable. No bursts. Min Gnt=2.Max Lat=40. I/O at 0x1f0 [0x1f7]. I/O at 0x3f6 [0x3f6]. I/O at 0x170 [0x177]. I/O at 0x376 [0x376]. I/O at 0x10190 [0x1019f]. I/O at 0x10180 [0x1018f]. Bus 0, device 12, function 0: SCSI storage controller: Symbios Logic Inc. (formerly NCR) 53c825 (rev 19). IRQ 19. Master Capable. Latency=128. Min Gnt=17.Max Lat=64. I/O at 0x10000 [0x100ff]. Non-prefetchable 32 bit memory at 0xfc7aef00 [0xfc7aefff]. Non-prefetchable 32 bit memory at 0xfc7af000 [0xfc7affff]. Bus 0, device 13, function 0: Bridge: Tundra Semiconductor Corp. CA91C042 [Universe] (rev 0). IRQ 21. Master Capable. No bursts. Min Gnt=3. Non-prefetchable 32 bit memory at 0xfc7b0000 [0xfc7bffff]. Bus 0, device 14, function 0: Ethernet controller: Digital Equipment Corporation DECchip 21140 [FasterNet] (rev 32). IRQ 18. Master Capable. Latency=96. Min Gnt=20.Max Lat=40. I/O at 0x10100 [0x1017f]. Non-prefetchable 32 bit memory at 0xfc7aee80 [0xfc7aeeff]. Bus 0, device 16, function 0: VGA compatible controller: S3 Inc. 86c764/765 [Trio32/64/64V+] (rev 0). IRQ 25. Non-prefetchable 32 bit memory at 0xfc800000 [0xfcffffff]. Gabriel. ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/ ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: 2.3 on 850 2000-03-10 12:38 ` 2.3 on 850 Gabriel Paubert @ 2000-03-10 20:01 ` David Monro 2000-03-11 17:19 ` Gabriel Paubert 0 siblings, 1 reply; 3+ messages in thread From: David Monro @ 2000-03-10 20:01 UTC (permalink / raw) To: Gabriel Paubert; +Cc: Linux/ppc Workstation List, Linux/ppc Dev List Gabriel Paubert wrote: > [..] > > What happened to my boot arguments????? > > Don't know, perhaps problems with this bootinfo thing... ?? What's this? > > > Further down: > > Setting PCI interrupts for a "IBM 8xx (Carolina)" > > Relocating PCI address 20000000 -> 1000000 > > PCI: Address space collision on region 0 of device Symbios Logic Inc. > > (formerly NCR) 53c825 > > PCI: Address space collision on region 0 of device Weitek P9100 > > PCI: Address space collision on region 6 of device Weitek P9100 > > > > This is sort of OK. What has happened here is that the '825 has an I/O > > region at 0x01000000, and the P9100 has a memory region as 0x01000000. > > Is it an I/O or a memory region ? Anyway the remapping in the kernel > is dangerous and something is wrong as soon as you get this kind of > message (except for the ROM). I solved the problem in my bootloader > by reallocating all PCI resources from scratch, making sure there would > never be any conflict. Fair enough :-) I'll have to grab your bootloader code and have a play... > > > Is this legal or not? The collision on address space 6 is almost > > certainly the bios at 0xc0000 clashing with the one for the onboard S3 > > 864. Since the P9100 doesn't actually have a bios in the rom socket I'm > > not too worried about this :-) > > Even then, it means that 2 slaves might respond to an acess at ISA memory > space at 0xc0000 if both ROMs are enabled, and cause conflicts on the bus. > The other one is definitely serious. what do /proc/ioports /proc/iomem and > /proc/pci (or lspci -vvxxx) report ? The rom area is marked disabled for both video devices in lspci. Having finally managed to get a shell on this thing using a floppy for the root fs: /proc/ioports: 000001f0-000001f0 : ide0 000001f1-000001f1 : ide0 000001f2-000001f2 : ide0 000001f3-000001f3 : ide0 000001f4-000001f4 : ide0 000001f5-000001f5 : ide0 000001f6-000001f6 : ide0 000001f7-000001f7 : ide0 000002f8-000002ff : serial(auto) 000003f6-000003f6 : ide0 000003f8-000003ff : serial(auto) 00001000-00001007 : IBM Fire Coral 00009032-00009032 : ide0 01000200-0100021f : Advanced Micro Devices [AMD] 79c970 [PCnet LANCE] /proc/iomem: 000c0000-000cffff : S3 Inc. 86c864 [Vision 864 DRAM] vers 1 013fff00-013fffff : Symbios Logic Inc. (formerly NCR) 53c825 /proc/pci (don't have lspci on floppy): PCI devices found: Bus 0, device 0, function 0: Host bridge: Motorola MPC105 [Eagle] (rev 36). Bus 0, device 11, function 0: ISA bridge: IBM Fire Coral (rev 2). I/O at 0x1000 [0x1007]. Bus 0, device 12, function 0: Ethernet controller: Advanced Micro Devices [AMD] 79c970 [PCnet LANCE] (rev 22). IRQ 15. Master Capable. Latency=211. Min Gnt=6.Max Lat=255. I/O at 0x1000200 [0x100021f]. Non-prefetchable 32 bit memory at 0x0 [0x1f]. Bus 0, device 14, function 0: VGA compatible unclassified device: S3 Inc. 86c864 [Vision 864 DRAM] vers 1 (rev 0). IRQ 10. Non-prefetchable 32 bit memory at 0x0 [0x7fffff]. Bus 0, device 18, function 0: SCSI storage controller: Symbios Logic Inc. (formerly NCR) 53c825 (rev 2). IRQ 10. Master Capable. Latency=128. I/O at 0x1000000 [0x200000ff]. Non-prefetchable 32 bit memory at 0x13fff00 [0x13fffff]. Bus 0, device 22, function 0: VGA compatible controller: Weitek P9100 (rev 0). IRQ 10. Non-prefetchable 32 bit memory at 0x1000000 [0x1ffffff]. As you can see, it's a bit of a mess! I've no idea what it thinks is in the way of the second set of ide ports. The end address of the '825 I/O regioin hasn't been remapped, so it clashes with the lance. The lance and the S3 864 both have memory at 0x0? and the memory area for the 825 is right in the middle of the P9100 area. Yuck! It looks a little bit different (and somewhat saner) under 2.2: /proc/ioports: 0000-001f : dma1 0020-003f : pic1 0040-005f : timer 0074-007b : PReP NVRAM 0080-008f : dma page reg 00a0-00bf : pic2 00c0-00df : dma2 0170-0177 : ide1 01f0-01f7 : ide0 02f8-02ff : serial(set) 0376-0376 : ide1 03f6-03f6 : ide0 03f8-03ff : serial(set) 1000200-100021f : PCnet/PCI II 79C970A lspci -v 00:00.0 Host bridge: Motorola MPC105 [Eagle] (rev 24) Flags: bus master, fast devsel, latency 0 00:0b.0 ISA bridge: IBM Fire Coral (rev 02) Flags: bus master, slow devsel, latency 0 I/O ports at 1000 00:0c.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970 [PCnet LANCE] (rev 16) Flags: bus master, medium devsel, latency 211, IRQ 15 I/O ports at 1000200 00:0e.0 VGA compatible unclassified device: S3 Inc. 86c864 [Vision 864 DRAM] vers 1 Flags: medium devsel, IRQ 10 Expansion ROM at 000c0000 [disabled] 00:12.0 SCSI storage controller: Symbios Logic Inc. (formerly NCR) 53c825 (rev 02) Flags: medium devsel, IRQ 10 I/O ports at 1000000 [disabled] Memory at 013fff00 (32-bit, non-prefetchable) [disabled] 00:16.0 VGA compatible controller: Weitek P9100 (prog-if 00 [VGA]) Flags: stepping, medium devsel, IRQ 10 Memory at 01000000 (32-bit, non-prefetchable) Expansion ROM at 000c0000 [disabled] Cheers, David ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/ ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: 2.3 on 850 2000-03-10 20:01 ` David Monro @ 2000-03-11 17:19 ` Gabriel Paubert 0 siblings, 0 replies; 3+ messages in thread From: Gabriel Paubert @ 2000-03-11 17:19 UTC (permalink / raw) To: David Monro; +Cc: Linux/ppc Workstation List, Linux/ppc Dev List On Fri, 10 Mar 2000, David Monro wrote: > Having finally managed to get a shell on this thing using a floppy for > the root fs: > /proc/ioports: > 000001f0-000001f0 : ide0 > 000001f1-000001f1 : ide0 > 000001f2-000001f2 : ide0 > 000001f3-000001f3 : ide0 > 000001f4-000001f4 : ide0 > 000001f5-000001f5 : ide0 > 000001f6-000001f6 : ide0 > 000001f7-000001f7 : ide0 Wow why not 1f0-1f7 ? > 000002f8-000002ff : serial(auto) > 000003f6-000003f6 : ide0 > 000003f8-000003ff : serial(auto) > 00001000-00001007 : IBM Fire Coral > 00009032-00009032 : ide0 > 01000200-0100021f : Advanced Micro Devices [AMD] 79c970 [PCnet LANCE] > > /proc/iomem: > 000c0000-000cffff : S3 Inc. 86c864 [Vision 864 DRAM] vers 1 > 013fff00-013fffff : Symbios Logic Inc. (formerly NCR) 53c825 > > /proc/pci (don't have lspci on floppy): no problem, cat /proc/pci is enough... > PCI devices found: > Bus 0, device 0, function 0: > Host bridge: Motorola MPC105 [Eagle] (rev 36). > Bus 0, device 11, function 0: > ISA bridge: IBM Fire Coral (rev 2). > I/O at 0x1000 [0x1007]. > Bus 0, device 12, function 0: > Ethernet controller: Advanced Micro Devices [AMD] 79c970 [PCnet LANCE] (rev 22). > IRQ 15. > Master Capable. Latency=211. Min Gnt=6.Max Lat=255. > I/O at 0x1000200 [0x100021f]. > Non-prefetchable 32 bit memory at 0x0 [0x1f]. > Bus 0, device 14, function 0: > VGA compatible unclassified device: S3 Inc. 86c864 [Vision 864 DRAM] > vers 1 (rev 0). > IRQ 10. > Non-prefetchable 32 bit memory at 0x0 [0x7fffff]. Not allocated, setting a base register to 0 disables the corresponding decoder in theory, but many devices forget that PCI spec requirement... > Bus 0, device 18, function 0: > SCSI storage controller: Symbios Logic Inc. (formerly NCR) 53c825 > (rev 2). > IRQ 10. > Master Capable. Latency=128. > I/O at 0x1000000 [0x200000ff]. Wow, that's definitely a bug I had not noticed. When remapping, both the start and end of the resource struct should be modified, else it looks like it uses from 0x1000000 to 0x200000ff, or 512Mb - 16Mb + 256b which is quite funny. The fix is easy: modify both the start and end of the resource in arch/ppc/kernel/prep_pci.c in the loop with the "relocating" message. It won't prevent conflicts from happening however... > Non-prefetchable 32 bit memory at 0x13fff00 [0x13fffff]. > Bus 0, device 22, function 0: > VGA compatible controller: Weitek P9100 (rev 0). > IRQ 10. > Non-prefetchable 32 bit memory at 0x1000000 [0x1ffffff]. These two overlap. > > As you can see, it's a bit of a mess! I've no idea what it thinks is in > the way of the second set of ide ports. The end address of the '825 I/O > regioin hasn't been remapped, so it clashes with the lance. The lance > and the S3 864 both have memory at 0x0? and the memory area for the 825 > is right in the middle of the P9100 area. Yuck! As you say (only memory at zero is not a problem if devices are correctly implemented)... > > It looks a little bit different (and somewhat saner) under 2.2: > /proc/ioports: > 0000-001f : dma1 > 0020-003f : pic1 > 0040-005f : timer > 0074-007b : PReP NVRAM > 0080-008f : dma page reg > 00a0-00bf : pic2 > 00c0-00df : dma2 > 0170-0177 : ide1 > 01f0-01f7 : ide0 > 02f8-02ff : serial(set) > 0376-0376 : ide1 > 03f6-03f6 : ide0 > 03f8-03ff : serial(set) > 1000200-100021f : PCnet/PCI II 79C970A > > > lspci -v > 00:00.0 Host bridge: Motorola MPC105 [Eagle] (rev 24) > Flags: bus master, fast devsel, latency 0 > > 00:0b.0 ISA bridge: IBM Fire Coral (rev 02) > Flags: bus master, slow devsel, latency 0 > I/O ports at 1000 > > 00:0c.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970 [PCnet > LANCE] (rev 16) > Flags: bus master, medium devsel, latency 211, IRQ 15 > I/O ports at 1000200 > > 00:0e.0 VGA compatible unclassified device: S3 Inc. 86c864 [Vision 864 > DRAM] vers 1 > Flags: medium devsel, IRQ 10 > Expansion ROM at 000c0000 [disabled] > > 00:12.0 SCSI storage controller: Symbios Logic Inc. (formerly NCR) > 53c825 (rev 02) > Flags: medium devsel, IRQ 10 > I/O ports at 1000000 [disabled] > Memory at 013fff00 (32-bit, non-prefetchable) [disabled] > > 00:16.0 VGA compatible controller: Weitek P9100 (prog-if 00 [VGA]) > Flags: stepping, medium devsel, IRQ 10 > Memory at 01000000 (32-bit, non-prefetchable) Still conflicts with the memory from the 53c825. No problem as long as it's disabled. > Expansion ROM at 000c0000 [disabled] > Gabriel. ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/ ^ permalink raw reply [flat|nested] 3+ messages in thread
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2000-03-10 12:38 ` 2.3 on 850 Gabriel Paubert
2000-03-10 20:01 ` David Monro
2000-03-11 17:19 ` Gabriel Paubert
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