From: Ed Swierk <eswierk@aristanetworks.com>
To: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com,
linux-kernel@vger.kernel.org, lenb@kernel.org,
linux-acpi@vger.kernel.org, jbarnes@virtuousgeek.org,
linux-pci@vger.kernel.org
Subject: [PATCH] Detect mmconfig on nVidia MCP55
Date: Wed, 04 Feb 2009 08:39:12 -0800 [thread overview]
Message-ID: <1233765552.16414.6.camel@localhost.localdomain> (raw)
Detect and enable memory-mapped PCI configuration space on the nVidia
MCP55 southbridge even if the ACPI MCFG table is missing or wrong.
Signed-off-by: Ed Swierk <eswierk@aristanetworks.com>
---
Index: linux-2.6.27.4/arch/x86/pci/mmconfig-shared.c
===================================================================
--- linux-2.6.27.4.orig/arch/x86/pci/mmconfig-shared.c
+++ linux-2.6.27.4/arch/x86/pci/mmconfig-shared.c
@@ -155,6 +155,26 @@ static const char __init *pci_mmcfg_amd_
return "AMD Family 10h NB";
}
+static const char __init *pci_mmcfg_nvidia_mcp55(void)
+{
+ u32 extcfg;
+
+ raw_pci_ops->read(0, 0, PCI_DEVFN(0, 0), 0x90, 4, &extcfg);
+
+ if (!(extcfg & 0x80000000))
+ return NULL;
+ pci_mmcfg_config = kzalloc(sizeof(pci_mmcfg_config[0]), GFP_KERNEL);
+ if (!pci_mmcfg_config)
+ return NULL;
+ pci_mmcfg_config[0].address = (extcfg & 0x00007fff) << 25;
+ pci_mmcfg_config[0].pci_segment = 0;
+ pci_mmcfg_config[0].start_bus_number = 0;
+ pci_mmcfg_config[0].end_bus_number = (1 << (8 - ((extcfg >> 28) & 3))) - 1;
+ pci_mmcfg_config_num = 1;
+
+ return "nVidia MCP55";
+}
+
struct pci_mmcfg_hostbridge_probe {
u32 bus;
u32 devfn;
@@ -172,6 +192,8 @@ static struct pci_mmcfg_hostbridge_probe
0x1200, pci_mmcfg_amd_fam10h },
{ 0xff, PCI_DEVFN(0, 0), PCI_VENDOR_ID_AMD,
0x1200, pci_mmcfg_amd_fam10h },
+ { 0, PCI_DEVFN(0, 0), PCI_VENDOR_ID_NVIDIA,
+ 0x0369, pci_mmcfg_nvidia_mcp55 },
};
static int __init pci_mmcfg_check_hostbridge(void)
next reply other threads:[~2009-02-04 16:39 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-04 16:39 Ed Swierk [this message]
2009-02-04 17:04 ` [PATCH] Detect mmconfig on nVidia MCP55 Ingo Molnar
2009-02-05 17:05 ` Tvrtko Ursulin
2009-02-05 18:00 ` Ingo Molnar
2009-02-06 11:30 ` Tvrtko Ursulin
2009-02-06 15:42 ` Ingo Molnar
2009-02-06 16:10 ` Tvrtko Ursulin
2009-02-09 19:26 ` Ed Swierk
2009-02-09 19:42 ` Yinghai Lu
2009-02-04 17:07 ` Loic Prylli
2009-02-04 17:37 ` Ed Swierk
2009-02-04 20:00 ` Yinghai Lu
2009-02-04 20:12 ` Yinghai Lu
2009-02-04 21:25 ` Ingo Molnar
2009-02-04 23:10 ` Yinghai Lu
2009-02-10 1:59 ` [PATCH] x86/pci: host mmconfig detect clean up v3 Yinghai Lu
2009-02-10 2:00 ` Subject: [PATCH] x86/pci: Detect mmconfig on nVidia MCP55 -v2 Yinghai Lu
2009-02-10 22:57 ` Ed Swierk
2009-02-11 5:05 ` Yinghai Lu
2009-02-11 22:00 ` Ed Swierk
2009-02-12 5:03 ` Ed Swierk
2009-02-12 5:02 ` [PATCH] x86/pci: host mmconfig detect clean up v3 Ed Swierk
2009-02-05 2:24 ` [PATCH] x86/pci: host mmconfig detect clean up v2 Yinghai Lu
2009-02-05 18:15 ` Ingo Molnar
2009-02-05 18:31 ` Yinghai Lu
2009-02-05 22:04 ` Ed Swierk
2009-02-05 22:36 ` Yinghai Lu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1233765552.16414.6.camel@localhost.localdomain \
--to=eswierk@aristanetworks.com \
--cc=hpa@zytor.com \
--cc=jbarnes@virtuousgeek.org \
--cc=lenb@kernel.org \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).