[U-Boot-Users] 85xx pci problems
sivaji
rameshmrm at gmail.com
Fri Dec 14 05:54:10 CET 2007
Hi,
Asper my understanding u configured 8548 as target. Host will
allocate bar values to target, from your output of lspci the host will not
allocate proper memory to target(8548). Please concentrate on the host side.
To up the pci express in the 8548 we are also face the same problem, in our
case target was 8548 and host was 8641D. In the target side we congiured
only bound registers, TLB in the uboot level. (Please correct me if i am
wrong)
Thanks and Regards
Sivaji
iksrazal wrote:
>
> Hi all,
>
> On our custom 8548, at the moment our priority is bringing up PCI for
> the first time. However, we can't get any cards recognized. To be
> honest, I found the device tree and TLB code of PCI to be the hardest
> part of the coding of the port, and I may have problems. We have a
> PCI1, PCI2 and one PCIE. Furthermore, since this is a new board we may
> have hardware issues.
>
>>From the u-boot monitor off of the latest git, I'm getting this:
>
> => pci
> Scanning PCI devices on bus 0
> BusDevFun VendorId DeviceId Device Class Sub-Class
> _____________________________________________________________
> 00.00.00 0x1057 0x0012 Processor 0x20
>
> => pci long
> Scanning PCI devices on bus 0
>
> Found PCI device 00.00.00:
> vendor ID = 0x1057
> device ID = 0x0012
> command register = 0x0006
> status register = 0x20b0
> revision ID = 0x20
> class code = 0x0b (Processor)
> sub class code = 0x20
> programming interface = 0x00
> cache line = 0x08
> latency time = 0x80
> header type = 0x00
> BIST = 0x00
> base address 0 = 0x00000000
> base address 1 = 0x00000000
> base address 2 = 0x00000004
> base address 3 = 0x00000000
> base address 4 = 0x0000000c
> base address 5 = 0x00000000
> cardBus CIS pointer = 0x00000000
> sub system vendor ID = 0x0000
> sub system ID = 0x0000
> expansion ROM base address = 0x00000000
> interrupt line = 0x00
> interrupt pin = 0x01
> min Grant = 0x00
> max Latency = 0x00
>
> => pci 1 long
> Scanning PCI devices on bus 1
>
> Found PCI device 01.00.00:
> vendor ID = 0x1057
> device ID = 0x0012
> command register = 0x0006
> status register = 0x20a0
> revision ID = 0x20
> class code = 0x0b (Processor)
> sub class code = 0x20
> programming interface = 0x00
> cache line = 0x08
> latency time = 0x80
> header type = 0x00
> BIST = 0x00
> base address 0 = 0x00000000
> base address 1 = 0x00000000
> base address 2 = 0x00000004
> base address 3 = 0x00000000
> base address 4 = 0x0000000c
> base address 5 = 0x00000000
> cardBus CIS pointer = 0x00000000
> sub system vendor ID = 0x0000
> sub system ID = 0x0000
> expansion ROM base address = 0x00000000
> interrupt line = 0x00
> interrupt pin = 0x01
> min Grant = 0x00
> max Latency = 0x00
>
>>From linux I get:
>
> bash-3.00# lspci -vv
> 00:00.0 Class 0b20: 1057:0012 (rev 20)
> Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
> ParErr- Stepping- SERR+ FastB2B-
> Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort-
> <TAbort- <MAbort+ >SERR- <PERR-
> Latency: 128, Cache Line Size 08
> Interrupt: pin A routed to IRQ 19
> Region 1: Memory at <unassigned> (32-bit, prefetchable)
> Region 2: Memory at <unassigned> (64-bit, non-prefetchable)
> Region 4: Memory at <unassigned> (64-bit, non-prefetchable)
> Capabilities: [60] #00 [0000]
>
> Not sure why I get "Status: Cap+ 66Mhz" - I need 33mhz and my device
> tree has "clock-frequency = <1fca055>". My device tree is mapped to
> have PCI at the root level to match the current 2.6.24RC2 . I've coded
> my TLB's to match this device tree:
>
> pci at e0008000 {
> interrupt-map-mask = <f800 0 0 7>;
> interrupt-map = <
>
> /* IDSEL 0x11 J17 Slot 1 */
> 8800 0 0 1 &mpic 2 1
> 8800 0 0 2 &mpic 3 1
> 8800 0 0 3 &mpic 4 1
> 8800 0 0 4 &mpic 1 1
>
> /* IDSEL 0x12 J16 Slot 2 */
>
> 9000 0 0 1 &mpic 3 1
> 9000 0 0 2 &mpic 4 1
> 9000 0 0 3 &mpic 2 1
> 9000 0 0 4 &mpic 1 1>;
>
> interrupt-parent = <&mpic>;
> interrupts = <4 2>;
> bus-range = <0 ff>;
> ranges = <02000000 0 80000000 80000000 0 20000000
> 01000000 0 00000000 e2000000 0 00100000>;
> clock-frequency = <1fca055>;
> #interrupt-cells = <1>;
> #size-cells = <2>;
> #address-cells = <3>;
> reg = <e0008000 1000>;
> compatible = "fsl,mpc8540-pcix", "fsl,mpc8540-pci";
> device_type = "pci";
> };
>
> pci at e000c000 {
> interrupt-map-mask = <f800 0 0 7>;
> interrupt-map = <
>
> /* IDSEL 0x11 J17 Slot 1 */
> 8800 0 0 1 &mpic 2 1
> 8800 0 0 2 &mpic 3 1
> 8800 0 0 3 &mpic 4 1
> 8800 0 0 4 &mpic 1 1
>
> /* IDSEL 0x12 J16 Slot 2 */
>
> 9000 0 0 1 &mpic 3 1
> 9000 0 0 2 &mpic 4 1
> 9000 0 0 3 &mpic 2 1
> 9000 0 0 4 &mpic 1 1>;
>
> interrupt-parent = <&mpic>;
> interrupts = <18 2>;
> bus-range = <0 ff>;
> ranges = <02000000 0 c0000000 c0000000 0 20000000
> 01000000 0 00000000 e2800000 0 00100000>;
> clock-frequency = <1fca055>;
> #interrupt-cells = <1>;
> #size-cells = <2>;
> #address-cells = <3>;
> reg = <e000c000 1000>;
> compatible = "fsl,mpc8540-pcix", "fsl,mpc8540-pci";
> device_type = "pci";
> };
>
> pcie at e000a000 {
> interrupt-map-mask = <f800 0 0 7>;
> interrupt-map = <
>
> /* IDSEL 0x0 (PEX) */
> 00000 0 0 1 &mpic 0 1
> 00000 0 0 2 &mpic 1 1
> 00000 0 0 3 &mpic 2 1
> 00000 0 0 4 &mpic 3 1>;
>
> interrupt-parent = <&mpic>;
> interrupts = <1a 2>;
> bus-range = <0 ff>;
> ranges = <02000000 0 a0000000 a0000000 0 20000000
> 01000000 0 00000000 e3000000 0 08000000>;
> clock-frequency = <1fca055>;
> #interrupt-cells = <1>;
> #size-cells = <2>;
> #address-cells = <3>;
> reg = <e000a000 1000>;
> compatible = "fsl,mpc8548-pcie";
> device_type = "pci";
> pcie at 0 {
> reg = <0 0 0 0 0>;
> #size-cells = <2>;
> #address-cells = <3>;
> device_type = "pci";
> ranges = <02000000 0 a0000000
> 02000000 0 a0000000
> 0 20000000
>
> 01000000 0 00000000
> 01000000 0 00000000
> 0 08000000>;
> };
> };
>
> We are putting the o-scope on the board to look for hardware issues.
> Any help on what to look for concerning PCI hardware issues or my TLB
> / device tree issues would be highly appreciated - we're running out
> of time!
>
> Thanks,
> Robert
>
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