From: Sergei Shtylyov <sshtylyov@ru•mvista.com>
To: Valentine Barshak <vbarshak@ru•mvista.com>
Cc: linuxppc-dev@ozlabs•org
Subject: Re: [PATCH 3/4] PowerPC: Add PCI entry to 440EPx Sequoia DTS.
Date: Sat, 05 Apr 2008 20:30:45 +0400 [thread overview]
Message-ID: <47F7A935.3080803@ru.mvista.com> (raw)
In-Reply-To: <20071221162601.GA1700@ru.mvista.com>
Valentine Barshak wrote:
> This adds PCI entry to PowerPC 440EPx Sequoia DTS.
> Signed-off-by: Valentine Barshak <vbarshak@ru•mvista.com>
> --- linux-2.6.orig/arch/powerpc/boot/dts/sequoia.dts 2007-12-21 17:14:17.000000000 +0300
> +++ linux-2.6/arch/powerpc/boot/dts/sequoia.dts 2007-12-21 17:18:32.000000000 +0300
> @@ -324,6 +324,33 @@
> has-new-stacr-staopc;
> };
> };
> +
> + PCI0: pci@1ec000000 {
> + device_type = "pci";
> + #interrupt-cells = <1>;
> + #size-cells = <2>;
> + #address-cells = <3>;
> + compatible = "ibm,plb440epx-pci", "ibm,plb-pci";
> + primary;
> + reg = <1 eec00000 8 /* Config space access */
> + 1 eed00000 4 /* IACK */
> + 1 eed00000 4 /* Special cycle */
> + 1 ef400000 40>; /* Internal registers */
> +
> + /* Outbound ranges, one memory and one IO,
> + * later cannot be changed. Chip supports a second
> + * IO range but we don't use it for now
> + */
> + ranges = <02000000 0 80000000 1 80000000 0 10000000
I wonder why the AMCC's Sequoia/Rainier manual has PCI memory mapped at
0x80000000-0xbfffffff? The 0x80000000-0x8fffffff mapping was assumed by
arch/ppc/ code. What/why changed here?
As we now both know, having PCI memory space mapped beyound 4 GB makes
some drivers misbehave as they use 'unsigned long' to store the result of
pci_resource_start() and later ioremap() this truncated value -- which is
64-bit on Sequoia due to CONFIG_RESOURCE_64BIT=y that is needed to store the
beyond-4GB addresses.
> + 01000000 0 00000000 1 e8000000 0 00100000>;
> +
> + /* Inbound 2GB range starting at 0 */
> + dma-ranges = <42000000 0 0 0 0 0 80000000>;
> +
> + /* All PCI interrupts are routed to IRQ 67 */
> + interrupt-map-mask = <0000 0 0 0>;
> + interrupt-map = < 0000 0 0 0 &UIC2 3 8 >;
> + };
> };
WBR, Sergei
next prev parent reply other threads:[~2008-04-05 16:31 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-21 16:07 [PATCH 0/4] PowerPC: more Sequoia/Rainier updates for 2.6.25 Valentine Barshak
2007-12-21 16:22 ` [PATCH 1/4] PowerPC: Correct 440GRx machine_check callback Valentine Barshak
2007-12-21 16:24 ` [PATCH 2/4] PowerPC: update 440EP(x)/440GR(x) identical PVR issue workaround Valentine Barshak
2007-12-21 16:43 ` Josh Boyer
2007-12-21 19:47 ` Valentine Barshak
2007-12-21 19:56 ` Stefan Roese
2007-12-24 12:51 ` Valentine Barshak
2007-12-21 16:26 ` [PATCH 3/4] PowerPC: Add PCI entry to 440EPx Sequoia DTS Valentine Barshak
2007-12-21 21:21 ` Benjamin Herrenschmidt
2007-12-22 5:53 ` Stefan Roese
2008-04-05 16:30 ` Sergei Shtylyov [this message]
2008-04-07 13:01 ` Valentine Barshak
2008-04-07 13:30 ` Sergei Shtylyov
2007-12-21 16:27 ` [PATCH 4/4] PowerPC: Add PCI node to 440GRx Rainier DTS Valentine Barshak
2007-12-21 17:19 ` Valentine Barshak
2007-12-21 17:22 ` [PATCH 4/4] PowerPC: Add PCI entry " Valentine Barshak
2007-12-21 21:21 ` [PATCH 4/4] PowerPC: Add PCI node " Benjamin Herrenschmidt
2007-12-22 5:54 ` Stefan Roese
2007-12-22 5:58 ` Benjamin Herrenschmidt
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