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-rw-r--r--arch/x86/kernel/early-quirks.c55
1 files changed, 52 insertions, 3 deletions
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index 733c4f8d42ea..3ce029ffaa55 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -95,7 +95,8 @@ static void __init nvidia_bugs(int num, int slot, int func)
95 95
96} 96}
97 97
98static u32 ati_ixp4x0_rev(int num, int slot, int func) 98#if defined(CONFIG_ACPI) && defined(CONFIG_X86_IO_APIC)
99static u32 __init ati_ixp4x0_rev(int num, int slot, int func)
99{ 100{
100 u32 d; 101 u32 d;
101 u8 b; 102 u8 b;
@@ -115,7 +116,6 @@ static u32 ati_ixp4x0_rev(int num, int slot, int func)
115 116
116static void __init ati_bugs(int num, int slot, int func) 117static void __init ati_bugs(int num, int slot, int func)
117{ 118{
118#if defined(CONFIG_ACPI) && defined (CONFIG_X86_IO_APIC)
119 u32 d; 119 u32 d;
120 u8 b; 120 u8 b;
121 121
@@ -138,9 +138,56 @@ static void __init ati_bugs(int num, int slot, int func)
138 printk(KERN_INFO "If you got timer trouble " 138 printk(KERN_INFO "If you got timer trouble "
139 "try acpi_use_timer_override\n"); 139 "try acpi_use_timer_override\n");
140 } 140 }
141#endif
142} 141}
143 142
143static u32 __init ati_sbx00_rev(int num, int slot, int func)
144{
145 u32 old, d;
146
147 d = read_pci_config(num, slot, func, 0x70);
148 old = d;
149 d &= ~(1<<8);
150 write_pci_config(num, slot, func, 0x70, d);
151 d = read_pci_config(num, slot, func, 0x8);
152 d &= 0xff;
153 write_pci_config(num, slot, func, 0x70, old);
154
155 return d;
156}
157
158static void __init ati_bugs_contd(int num, int slot, int func)
159{
160 u32 d, rev;
161
162 if (acpi_use_timer_override)
163 return;
164
165 rev = ati_sbx00_rev(num, slot, func);
166 if (rev > 0x13)
167 return;
168
169 /* check for IRQ0 interrupt swap */
170 d = read_pci_config(num, slot, func, 0x64);
171 if (!(d & (1<<14)))
172 acpi_skip_timer_override = 1;
173
174 if (acpi_skip_timer_override) {
175 printk(KERN_INFO "SB600 revision 0x%x\n", rev);
176 printk(KERN_INFO "Ignoring ACPI timer override.\n");
177 printk(KERN_INFO "If you got timer trouble "
178 "try acpi_use_timer_override\n");
179 }
180}
181#else
182static void __init ati_bugs(int num, int slot, int func)
183{
184}
185
186static void __init ati_bugs_contd(int num, int slot, int func)
187{
188}
189#endif
190
144#ifdef CONFIG_DMAR 191#ifdef CONFIG_DMAR
145static void __init intel_g33_dmar(int num, int slot, int func) 192static void __init intel_g33_dmar(int num, int slot, int func)
146{ 193{
@@ -176,6 +223,8 @@ static struct chipset early_qrk[] __initdata = {
176 PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, fix_hypertransport_config }, 223 PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, fix_hypertransport_config },
177 { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP400_SMBUS, 224 { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP400_SMBUS,
178 PCI_CLASS_SERIAL_SMBUS, PCI_ANY_ID, 0, ati_bugs }, 225 PCI_CLASS_SERIAL_SMBUS, PCI_ANY_ID, 0, ati_bugs },
226 { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS,
227 PCI_CLASS_SERIAL_SMBUS, PCI_ANY_ID, 0, ati_bugs_contd },
179#ifdef CONFIG_DMAR 228#ifdef CONFIG_DMAR
180 { PCI_VENDOR_ID_INTEL, 0x29c0, 229 { PCI_VENDOR_ID_INTEL, 0x29c0,
181 PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, intel_g33_dmar }, 230 PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, intel_g33_dmar },