From: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
To: ak@suse.de, akpm@osdl.org
Cc: shaohua.li@intel.com, linux-kernel@vger.kernel.org,
discuss@x86-64.org, ashok.raj@intel.com,
suresh.b.siddha@intel.com
Subject: [patch 1/4] add write_pci_config_byte() to direct PCI access routines
Date: Tue, 7 Nov 2006 17:36:24 -0800 [thread overview]
Message-ID: <20061107173624.A5401@unix-os.sc.intel.com> (raw)
In-Reply-To: <20061107173306.C3262@unix-os.sc.intel.com>; from suresh.b.siddha@intel.com on Tue, Nov 07, 2006 at 05:33:06PM -0800
Add write_pci_config_byte() to direct PCI access routines
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
---
diff --git a/arch/i386/pci/early.c b/arch/i386/pci/early.c
index 713d6c8..42df4b6 100644
--- a/arch/i386/pci/early.c
+++ b/arch/i386/pci/early.c
@@ -45,6 +45,13 @@ void write_pci_config(u8 bus, u8 slot, u
outl(val, 0xcfc);
}
+void write_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset, u8 val)
+{
+ PDprintk("%x writing to %x: %x\n", slot, offset, val);
+ outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
+ outb(val, 0xcfc);
+}
+
int early_pci_allowed(void)
{
return (pci_probe & (PCI_PROBE_CONF1|PCI_PROBE_NOEARLY)) ==
diff --git a/include/asm-x86_64/pci-direct.h b/include/asm-x86_64/pci-direct.h
index eba9cb4..6823fa4 100644
--- a/include/asm-x86_64/pci-direct.h
+++ b/include/asm-x86_64/pci-direct.h
@@ -10,6 +10,7 @@ extern u32 read_pci_config(u8 bus, u8 sl
extern u8 read_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset);
extern u16 read_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset);
extern void write_pci_config(u8 bus, u8 slot, u8 func, u8 offset, u32 val);
+extern void write_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset, u8 val);
extern int early_pci_allowed(void);
next prev parent reply other threads:[~2006-11-08 1:58 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-08 1:33 [patch 0/4] i386, x86_64: fix the irqbalance quirk for E7520/E7320/E7525 Siddha, Suresh B
2006-11-08 1:36 ` Siddha, Suresh B [this message]
2006-11-08 1:40 ` [patch 2/4] introduce the mechanism of disabling cpu hotplug control Siddha, Suresh B
2006-11-08 1:43 ` [patch 3/4] x86_64: add genapic_force Siddha, Suresh B
2006-11-08 1:46 ` [patch 4/4] fix the irqbalance quirk for E7320/E7520/E7525 Siddha, Suresh B
2006-11-08 3:54 ` [patch 2/4] introduce the mechanism of disabling cpu hotplug control Andrew Morton
2006-11-08 4:01 ` Siddha, Suresh B
2006-11-08 4:35 ` Andrew Morton
2006-11-08 5:23 ` Siddha, Suresh B
2006-11-11 0:43 ` [patch] change the 'no_control' field to 'hotpluggable' in the struct cpu Siddha, Suresh B
2006-11-08 4:07 ` [patch 0/4] i386, x86_64: fix the irqbalance quirk for E7520/E7320/E7525 Andrew Morton
2006-11-08 4:06 ` Siddha, Suresh B
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