diff options
Diffstat (limited to 'arch/i386/kernel')
| -rw-r--r-- | arch/i386/kernel/cpu/mtrr/generic.c | 4 | ||||
| -rw-r--r-- | arch/i386/kernel/cpu/mtrr/main.c | 2 | ||||
| -rw-r--r-- | arch/i386/kernel/pci-dma.c | 27 |
3 files changed, 30 insertions, 3 deletions
diff --git a/arch/i386/kernel/cpu/mtrr/generic.c b/arch/i386/kernel/cpu/mtrr/generic.c index c4ebb5126ef..6d5937891b4 100644 --- a/arch/i386/kernel/cpu/mtrr/generic.c +++ b/arch/i386/kernel/cpu/mtrr/generic.c @@ -42,7 +42,7 @@ static int mtrr_show; module_param_named(show, mtrr_show, bool, 0); /* Get the MSR pair relating to a var range */ -static void __init +static void get_mtrr_var_range(unsigned int index, struct mtrr_var_range *vr) { rdmsr(MTRRphysBase_MSR(index), vr->base_lo, vr->base_hi); @@ -68,7 +68,7 @@ void mtrr_save_fixed_ranges(void *info) get_fixed_ranges(mtrr_state.fixed_ranges); } -static void __cpuinit print_fixed(unsigned base, unsigned step, const mtrr_type*types) +static void print_fixed(unsigned base, unsigned step, const mtrr_type*types) { unsigned i; diff --git a/arch/i386/kernel/cpu/mtrr/main.c b/arch/i386/kernel/cpu/mtrr/main.c index 7202b98aac4..55b005152a1 100644 --- a/arch/i386/kernel/cpu/mtrr/main.c +++ b/arch/i386/kernel/cpu/mtrr/main.c @@ -639,7 +639,7 @@ static struct sysdev_driver mtrr_sysdev_driver = { * initialized (i.e. before smp_init()). * */ -void mtrr_bp_init(void) +__init void mtrr_bp_init(void) { init_ifs(); diff --git a/arch/i386/kernel/pci-dma.c b/arch/i386/kernel/pci-dma.c index 30b754f7cbe..048f09b6255 100644 --- a/arch/i386/kernel/pci-dma.c +++ b/arch/i386/kernel/pci-dma.c @@ -12,6 +12,7 @@ #include <linux/string.h> #include <linux/pci.h> #include <linux/module.h> +#include <linux/pci.h> #include <asm/io.h> struct dma_coherent_mem { @@ -148,3 +149,29 @@ void *dma_mark_declared_memory_occupied(struct device *dev, return mem->virt_base + (pos << PAGE_SHIFT); } EXPORT_SYMBOL(dma_mark_declared_memory_occupied); + +#ifdef CONFIG_PCI +/* Many VIA bridges seem to corrupt data for DAC. Disable it here */ + +int forbid_dac; +EXPORT_SYMBOL(forbid_dac); + +static __devinit void via_no_dac(struct pci_dev *dev) +{ + if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI && forbid_dac == 0) { + printk(KERN_INFO "PCI: VIA PCI bridge detected. Disabling DAC.\n"); + forbid_dac = 1; + } +} +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_ANY_ID, via_no_dac); + +static int check_iommu(char *s) +{ + if (!strcmp(s, "usedac")) { + forbid_dac = -1; + return 1; + } + return 0; +} +__setup("iommu=", check_iommu); +#endif |