aboutsummaryrefslogtreecommitdiffstats
path: root/arch/x86_64/kernel/vsmp.c
diff options
context:
space:
mode:
authorThomas Gleixner <tglx@linutronix.de>2007-10-11 05:14:47 -0400
committerThomas Gleixner <tglx@linutronix.de>2007-10-11 05:14:47 -0400
commita6d83df15c53a5f503c50e3d824c1cf3f89ebb1a (patch)
treef9a31879ce447d246930cb0be7659a20d95086ef /arch/x86_64/kernel/vsmp.c
parent198a071dff9ee61973edf8c58f22ecd5bc4892c8 (diff)
x86_64: prepare shared kernel/vsmp.c
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86_64/kernel/vsmp.c')
-rw-r--r--arch/x86_64/kernel/vsmp.c49
1 files changed, 0 insertions, 49 deletions
diff --git a/arch/x86_64/kernel/vsmp.c b/arch/x86_64/kernel/vsmp.c
deleted file mode 100644
index 414caf0c5f9a..000000000000
--- a/arch/x86_64/kernel/vsmp.c
+++ /dev/null
@@ -1,49 +0,0 @@
1/*
2 * vSMPowered(tm) systems specific initialization
3 * Copyright (C) 2005 ScaleMP Inc.
4 *
5 * Use of this code is subject to the terms and conditions of the
6 * GNU general public license version 2. See "COPYING" or
7 * http://www.gnu.org/licenses/gpl.html
8 *
9 * Ravikiran Thirumalai <kiran@scalemp.com>,
10 * Shai Fultheim <shai@scalemp.com>
11 */
12
13#include <linux/init.h>
14#include <linux/pci_ids.h>
15#include <linux/pci_regs.h>
16#include <asm/pci-direct.h>
17#include <asm/io.h>
18
19static int __init vsmp_init(void)
20{
21 void *address;
22 unsigned int cap, ctl;
23
24 if (!early_pci_allowed())
25 return 0;
26
27 /* Check if we are running on a ScaleMP vSMP box */
28 if ((read_pci_config_16(0, 0x1f, 0, PCI_VENDOR_ID) != PCI_VENDOR_ID_SCALEMP) ||
29 (read_pci_config_16(0, 0x1f, 0, PCI_DEVICE_ID) != PCI_DEVICE_ID_SCALEMP_VSMP_CTL))
30 return 0;
31
32 /* set vSMP magic bits to indicate vSMP capable kernel */
33 address = ioremap(read_pci_config(0, 0x1f, 0, PCI_BASE_ADDRESS_0), 8);
34 cap = readl(address);
35 ctl = readl(address + 4);
36 printk("vSMP CTL: capabilities:0x%08x control:0x%08x\n", cap, ctl);
37 if (cap & ctl & (1 << 4)) {
38 /* Turn on vSMP IRQ fastpath handling (see system.h) */
39 ctl &= ~(1 << 4);
40 writel(ctl, address + 4);
41 ctl = readl(address + 4);
42 printk("vSMP CTL: control set to:0x%08x\n", ctl);
43 }
44
45 iounmap(address);
46 return 0;
47}
48
49core_initcall(vsmp_init);