diff options
Diffstat (limited to 'arch/x86/kernel')
-rw-r--r-- | arch/x86/kernel/amd_nb.c | 31 | ||||
-rw-r--r-- | arch/x86/kernel/x86_init.c | 1 |
2 files changed, 32 insertions, 0 deletions
diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c index 013c1810ce7..be16854591c 100644 --- a/arch/x86/kernel/amd_nb.c +++ b/arch/x86/kernel/amd_nb.c | |||
@@ -119,6 +119,37 @@ bool __init early_is_amd_nb(u32 device) | |||
119 | return false; | 119 | return false; |
120 | } | 120 | } |
121 | 121 | ||
122 | struct resource *amd_get_mmconfig_range(struct resource *res) | ||
123 | { | ||
124 | u32 address; | ||
125 | u64 base, msr; | ||
126 | unsigned segn_busn_bits; | ||
127 | |||
128 | if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) | ||
129 | return NULL; | ||
130 | |||
131 | /* assume all cpus from fam10h have mmconfig */ | ||
132 | if (boot_cpu_data.x86 < 0x10) | ||
133 | return NULL; | ||
134 | |||
135 | address = MSR_FAM10H_MMIO_CONF_BASE; | ||
136 | rdmsrl(address, msr); | ||
137 | |||
138 | /* mmconfig is not enabled */ | ||
139 | if (!(msr & FAM10H_MMIO_CONF_ENABLE)) | ||
140 | return NULL; | ||
141 | |||
142 | base = msr & (FAM10H_MMIO_CONF_BASE_MASK<<FAM10H_MMIO_CONF_BASE_SHIFT); | ||
143 | |||
144 | segn_busn_bits = (msr >> FAM10H_MMIO_CONF_BUSRANGE_SHIFT) & | ||
145 | FAM10H_MMIO_CONF_BUSRANGE_MASK; | ||
146 | |||
147 | res->flags = IORESOURCE_MEM; | ||
148 | res->start = base; | ||
149 | res->end = base + (1ULL<<(segn_busn_bits + 20)) - 1; | ||
150 | return res; | ||
151 | } | ||
152 | |||
122 | int amd_get_subcaches(int cpu) | 153 | int amd_get_subcaches(int cpu) |
123 | { | 154 | { |
124 | struct pci_dev *link = node_to_amd_nb(amd_get_nb_id(cpu))->link; | 155 | struct pci_dev *link = node_to_amd_nb(amd_get_nb_id(cpu))->link; |
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c index 91f83e21b98..947a06ccc67 100644 --- a/arch/x86/kernel/x86_init.c +++ b/arch/x86/kernel/x86_init.c | |||
@@ -115,4 +115,5 @@ struct x86_msi_ops x86_msi = { | |||
115 | .setup_msi_irqs = native_setup_msi_irqs, | 115 | .setup_msi_irqs = native_setup_msi_irqs, |
116 | .teardown_msi_irq = native_teardown_msi_irq, | 116 | .teardown_msi_irq = native_teardown_msi_irq, |
117 | .teardown_msi_irqs = default_teardown_msi_irqs, | 117 | .teardown_msi_irqs = default_teardown_msi_irqs, |
118 | .restore_msi_irqs = default_restore_msi_irqs, | ||
118 | }; | 119 | }; |