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Date: Mon, 26 Nov 2007 13:26:08 -0500
From: "robert lazarski" <robertlazarski@gmail.com>
To: linuxppc-embedded@ozlabs.org
Subject: Device tree and /proc/iomem question
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Hi all, I'm using a recent pull of the paulus tree 2.6.24RC2 on my
custom 85xx board. I'm trying to test my PCI1, PCI2 and PCIe . My
device tree for PCI is:

		pci@8000 {
			compatible = "fsl,mpc8540-pci";
			device_type = "pci";
			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 80000000 80000000 0 20000000
				  01000000 0 00000000 e2000000 0 00100000>;
			clock-frequency = <3f940aa>;
			#interrupt-cells = <1>;
			#size-cells = <2>;
			#address-cells = <3>;
			reg = <8000 1000>;
		};

		pci@c000 {
			compatible = "fsl,mpc8540-pci";
			device_type = "pci";
			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 = <3f940aa>;
			#interrupt-cells = <1>;
			#size-cells = <2>;
			#address-cells = <3>;
			reg = <c000 1000>;
		};

		pcie@a000 {
			compatible = "fsl,mpc8548-pcie";
			device_type = "pci";
			#interrupt-cells = <1>;
			#size-cells = <2>;
			#address-cells = <3>;
			reg = <a000 1000>;
			bus-range = <0 ff>;
			ranges = <02000000 0 a0000000 a0000000 0 20000000
				  01000000 0 00000000 e3000000 0 00100000>;
			clock-frequency = <1fca055>;
			interrupt-parent = <&mpic>;
			interrupts = <19 2>;
			interrupt-map-mask = <f800 0 0 7>;
			interrupt-map = <
				/* IDSEL 0x0 */
				0000 0 0 1 &mpic 0 1
				0000 0 0 2 &mpic 1 1
				0000 0 0 3 &mpic 2 1
				0000 0 0 4 &mpic 3 1
				>;
		};

I see all the above in /proc/device-tree/soc8548@e0000000 when booting
the kernel. I double checked my memory mapping in u-boot and it
appears to match my device tree. Yet I don't see any pci here:

root:~> cat /proc/iomem
e0004500-e0004507 : serial
e0004600-e0004607 : serial
e0024000-e0024fff : ethernet
  e0024520-e002453f : mdio
e0025000-e0025fff : ethernet
e0026000-e0026fff : ethernet
e0027000-e0027fff : ethernet

cat /proc/bus/pci/devices shows nothing though I have a card in PCI1,
and all I see from dmesg is "PCI: Probing PCI hardware" . Any ideas?
Robert