From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gdatech.co.in (mail.gdatech.co.in [202.144.30.226]) by ozlabs.org (Postfix) with ESMTP id EE6ECDDE09 for ; Tue, 15 Jan 2008 21:45:52 +1100 (EST) Received: from [172.29.36.2] (localhost.localdomain [127.0.0.1]) by predator.gdatech.co.in (Postfix-out) with ESMTP id 74B988780B4 for ; Tue, 15 Jan 2008 02:26:21 -0800 (PST) Received: from mail.gdatech.co.in (unknown [172.29.36.1]) by predator.gdatech.co.in (Postfix-out) with ESMTP id 2707D87805D for ; Tue, 15 Jan 2008 02:26:21 -0800 (PST) Message-ID: <002401c85761$12104700$bb261dac@Ansari> From: "Ansari" To: Subject: USB Mass Storare (PCI Based) Date: Tue, 15 Jan 2008 15:56:20 +0530 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0021_01C8578F.2BBEE610" List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This is a multi-part message in MIME format. ------=_NextPart_000_0021_01C8578F.2BBEE610 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi, I want to configure linux kernel for USB Mass Storage device (PCI = Based).In that i have few doubts. Can u pls calrify it. Hardware=20 --------------- MPC8560 (PCI Host Mode ) MPC8540 (PCI Agent Mode ) ISP1564 (PCI Target - USB Host Controller) Software=20 --------------- Uboot 1.1.2 Linux Kernel 2.4.10 Problem=20 -------------- I am using default pci & usb driver given in uboot and linux kernel. In my board both MPC8560 (PCI Host), MPC8540 (PCI Agent) should access = the ISP1564 USB host controller (PCI Target). All the three PCI devices = connected in a single pci bus. My problem is when i load uboot (with PCI Config) and kernel (with = PCI,USB-EHCI,USB Mass storage Config) in MPC8560. Its working properly. After MPC8560 booted , when i try to load uboot (with PCI support = disabled) and kernel (with PCI,USB-EHCI,USB Mass storage Config).=20 The mass storage is not working in MPC8540 . But its working in = MPC8560. Few oberservation while testing : 1. When i enable PCI support in MPC8540 uboot and not booting kernel. = The usb mass storage not working in MPC8560 kernel. 2. When i disable PCI support in MPC8540 uboot and not booting = kernel(even if i boot kernel also). The usb mass storage working in = MPC8560 kernel. 3. In both the case /proc/bus/pci and /proc/pci not created in = MPC8540 kernel.( Note : I have enabled the option of proc file system , = virtual file system support in MPC8540 kernel). Questions=20 --------------- 1. By the above problem defintion can u able to guess . Wht would be = the problem ??? 2. Why proc entry for pci is not created in MPC8540 kernel ??? . = Whether PCI agent mode has any impact on it.?? 3. Whether any special changes required in pci uboot/kernel driver of = MPC8540. Since PCI of MPC8540 is in Agent Mode. 4. Whether any special changes required in USB kernel driver of = MPC8540. Since PCI of MPC8540 is in Agent Mode.=20 Thanks in Advance =20 Regards Haroun Ansari=20 ------=_NextPart_000_0021_01C8578F.2BBEE610 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi,

I want to configure linux kernel for = USB Mass=20 Storage device (PCI Based).In that i have few doubts. Can u pls calrify=20 it.

Hardware

---------------

MPC8560 (PCI Host Mode )
MPC8540 (PCI Agent = Mode=20 )
ISP1564 (PCI Target - USB Host Controller)

Software

---------------

Uboot 1.1.2
Linux Kernel 2.4.10

Problem

--------------

I am using default pci & usb driver given in uboot and = linux=20 kernel.

In my board both MPC8560 (PCI Host), MPC8540 (PCI Agent) = should=20 access the ISP1564 USB host controller (PCI Target). All the three PCI = devices=20 connected in a single pci bus.

My problem is when i load uboot (with PCI Config) and kernel = (with=20 PCI,USB-EHCI,USB Mass storage Config) in MPC8560. Its working=20 properly.

After MPC8560 booted , when i try to load uboot (with PCI = support=20 disabled) and kernel (with PCI,USB-EHCI,USB Mass storage Config).

The mass storage is not working in MPC8540 . But its working = in=20 MPC8560.

Few oberservation while testing :

  1. When i enable PCI support in MPC8540 uboot and not = booting=20 kernel. The usb mass storage not working in MPC8560 = kernel.
  2.=20 When i disable PCI support in MPC8540 uboot and not booting kernel(even = if i=20 boot kernel also). The usb mass storage working in MPC8560=20 kernel.
  3. In both the case /proc/bus/pci and /proc/pci = not=20 created in MPC8540 kernel.( Note : I have enabled the option of = proc file=20 system , virtual file system support in MPC8540 kernel).

Questions

---------------

1. By the above problem defintion can u able to guess . = Wht=20 would be the problem ???
2. Why proc entry for pci is not = created in=20 MPC8540 kernel ??? . Whether PCI agent mode has any impact on = it.??
3.=20 Whether any special changes required in pci uboot/kernel driver of = MPC8540.=20 Since PCI of MPC8540 is in Agent Mode.
4. Whether any special = changes=20 required in USB kernel driver of MPC8540. Since PCI of MPC8540 is in = Agent Mode.=20

Thanks in Advance

Regards
Haroun Ansari

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