From: Wade Farnsworth <wfarnsworth@mvista.com>
To: Zhang Wei <wei.zhang@freescale.com>
Cc: linuxppc-dev@ozlabs.org, paulus@samba.org
Subject: Re: [PATCH 3/5] Float the pci bus number on MPC8641HPCN board.
Date: Tue, 22 May 2007 10:59:52 -0700 [thread overview]
Message-ID: <1179856792.27985.22.camel@rhino> (raw)
In-Reply-To: <1179805110278-git-send-email-wei.zhang@freescale.com>
On Tue, 2007-05-22 at 11:38 +0800, Zhang Wei wrote:
> int mpc86xx_exclude_device(u_char bus, u_char devfn)
> {
> + struct pci_controller *hose;
> +
> + hose = pci_bus_to_hose(bus);
> + if (unlikely(!hose))
> + return PCIBIOS_DEVICE_NOT_FOUND;
> +
> + /* Correcting the hose->bus_offset value. */
> + out_be32(hose->cfg_addr, 0x80000000 | ((hose->first_busno
> + - hose->bus_offset) << 16));
> + if (unlikely(in_le32(hose->cfg_data) == 0xffffffff))
> + hose->bus_offset = hose->bus_offset ? 0 : hose->first_busno;
> +
> return PCIBIOS_SUCCESSFUL;
> }
What is the purpose of this code and why put it in
mpc86xx_exclude_device?
--Wade
next prev parent reply other threads:[~2007-05-22 17:59 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-22 3:38 [PATCH 0/5] Add the support for MPC8641 silicon rev 2.0 and MPC8641HPCN board 2.0 Zhang Wei
2007-05-22 3:38 ` [PATCH 1/5] Remove the errata fix codes for MPC8641 silicon ver 1.0 which is end of life Zhang Wei
2007-05-22 3:38 ` [PATCH 2/5] Add uli1575 pci-bridge sector to MPC8641HPCN dts file Zhang Wei
2007-05-22 3:38 ` [PATCH 3/5] Float the pci bus number on MPC8641HPCN board Zhang Wei
2007-05-22 3:38 ` [PATCH 4/5] Set RC of mpc8641 to transparent bridge for transfer legacy I/O access Zhang Wei
2007-05-22 3:38 ` [PATCH 5/5] Set IDE in ULI1575 to not native mode Zhang Wei
2007-05-29 18:15 ` Jon Loeliger
2007-05-29 20:50 ` Kumar Gala
2007-05-30 2:25 ` Zhang Wei-r63237
2007-05-30 11:40 ` Benjamin Herrenschmidt
2007-05-31 2:00 ` Zhang Wei-r63237
2007-05-30 11:18 ` Benjamin Herrenschmidt
2007-05-29 18:15 ` [PATCH 4/5] Set RC of mpc8641 to transparent bridge for transfer legacy I/O access Jon Loeliger
2007-05-22 17:59 ` Wade Farnsworth [this message]
2007-05-23 3:35 ` [PATCH 3/5] Float the pci bus number on MPC8641HPCN board Zhang Wei-r63237
2007-05-31 13:43 ` Kumar Gala
2007-06-01 2:01 ` Zhang Wei-r63237
2007-06-01 5:08 ` Kumar Gala
2007-06-01 6:28 ` Paul Mackerras
2007-06-01 6:45 ` Zhang Wei-r63237
2007-06-01 7:44 ` Benjamin Herrenschmidt
2007-06-01 7:53 ` Zhang Wei-r63237
2007-06-01 8:00 ` Benjamin Herrenschmidt
2007-06-01 16:35 ` Matt Sealey
2007-06-01 16:47 ` Jon Loeliger
2007-06-01 22:41 ` Benjamin Herrenschmidt
2007-06-01 22:41 ` Benjamin Herrenschmidt
2007-06-02 8:36 ` Segher Boessenkool
2007-06-02 8:55 ` Benjamin Herrenschmidt
2007-06-01 19:58 ` Kumar Gala
2007-06-01 23:28 ` Benjamin Herrenschmidt
2007-06-04 19:00 ` Jon Loeliger
2007-06-04 22:24 ` Benjamin Herrenschmidt
2007-06-01 6:29 ` Zhang Wei-r63237
2007-05-29 18:14 ` Jon Loeliger
2007-05-22 20:37 ` [PATCH 2/5] Add uli1575 pci-bridge sector to MPC8641HPCN dts file xianghua xiao
2007-05-23 3:38 ` Zhang Wei-r63237
2007-05-29 18:14 ` Jon Loeliger
2007-05-29 20:39 ` Kumar Gala
2007-05-30 10:02 ` Zhang Wei-r63237
2007-05-30 10:18 ` Segher Boessenkool
2007-05-30 11:07 ` Benjamin Herrenschmidt
2007-05-30 22:26 ` Wade Farnsworth
2007-05-29 18:13 ` [PATCH 1/5] Remove the errata fix codes for MPC8641 silicon ver 1.0 which is end of life Jon Loeliger
2007-05-22 3:53 ` [PATCH 0/5] Add the support for MPC8641 silicon rev 2.0 and MPC8641HPCN board 2.0 Kumar Gala
2007-05-22 4:46 ` Zhang Wei-r63237
2007-05-22 12:54 ` Kumar Gala
2007-05-22 16:28 ` Jon Loeliger
2007-05-22 17:47 ` Wade Farnsworth
2007-05-23 2:48 ` [PATCH 0/5] Add the support for MPC8641 silicon rev 2.0 andMPC8641HPCN " Zhang Wei-r63237
2007-05-23 22:37 ` Wade Farnsworth
2007-05-29 18:12 ` [PATCH 0/5] Add the support for MPC8641 silicon rev 2.0 and MPC8641HPCN " Jon Loeliger
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