diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/x86/kernel/mmconf-fam10h_64.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/x86/kernel/mmconf-fam10h_64.c | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/ANDROID_3.4.5/arch/x86/kernel/mmconf-fam10h_64.c b/ANDROID_3.4.5/arch/x86/kernel/mmconf-fam10h_64.c deleted file mode 100644 index ac861b83..00000000 --- a/ANDROID_3.4.5/arch/x86/kernel/mmconf-fam10h_64.c +++ /dev/null @@ -1,237 +0,0 @@ -/* - * AMD Family 10h mmconfig enablement - */ - -#include <linux/types.h> -#include <linux/mm.h> -#include <linux/string.h> -#include <linux/pci.h> -#include <linux/dmi.h> -#include <linux/range.h> - -#include <asm/pci-direct.h> -#include <linux/sort.h> -#include <asm/io.h> -#include <asm/msr.h> -#include <asm/acpi.h> -#include <asm/mmconfig.h> -#include <asm/pci_x86.h> - -struct pci_hostbridge_probe { - u32 bus; - u32 slot; - u32 vendor; - u32 device; -}; - -static u64 __cpuinitdata fam10h_pci_mmconf_base; - -static struct pci_hostbridge_probe pci_probes[] __cpuinitdata = { - { 0, 0x18, PCI_VENDOR_ID_AMD, 0x1200 }, - { 0xff, 0, PCI_VENDOR_ID_AMD, 0x1200 }, -}; - -static int __cpuinit cmp_range(const void *x1, const void *x2) -{ - const struct range *r1 = x1; - const struct range *r2 = x2; - int start1, start2; - - start1 = r1->start >> 32; - start2 = r2->start >> 32; - - return start1 - start2; -} - -#define MMCONF_UNIT (1ULL << FAM10H_MMIO_CONF_BASE_SHIFT) -#define MMCONF_MASK (~(MMCONF_UNIT - 1)) -#define MMCONF_SIZE (MMCONF_UNIT << 8) -/* need to avoid (0xfd<<32), (0xfe<<32), and (0xff<<32), ht used space */ -#define FAM10H_PCI_MMCONF_BASE (0xfcULL<<32) -#define BASE_VALID(b) ((b) + MMCONF_SIZE <= (0xfdULL<<32) || (b) >= (1ULL<<40)) -static void __cpuinit get_fam10h_pci_mmconf_base(void) -{ - int i; - unsigned bus; - unsigned slot; - int found; - - u64 val; - u32 address; - u64 tom2; - u64 base = FAM10H_PCI_MMCONF_BASE; - - int hi_mmio_num; - struct range range[8]; - - /* only try to get setting from BSP */ - if (fam10h_pci_mmconf_base) - return; - - if (!early_pci_allowed()) - return; - - found = 0; - for (i = 0; i < ARRAY_SIZE(pci_probes); i++) { - u32 id; - u16 device; - u16 vendor; - - bus = pci_probes[i].bus; - slot = pci_probes[i].slot; - id = read_pci_config(bus, slot, 0, PCI_VENDOR_ID); - - vendor = id & 0xffff; - device = (id>>16) & 0xffff; - if (pci_probes[i].vendor == vendor && - pci_probes[i].device == device) { - found = 1; - break; - } - } - - if (!found) - return; - - /* SYS_CFG */ - address = MSR_K8_SYSCFG; - rdmsrl(address, val); - - /* TOP_MEM2 is not enabled? */ - if (!(val & (1<<21))) { - tom2 = 1ULL << 32; - } else { - /* TOP_MEM2 */ - address = MSR_K8_TOP_MEM2; - rdmsrl(address, val); - tom2 = max(val & 0xffffff800000ULL, 1ULL << 32); - } - - if (base <= tom2) - base = (tom2 + 2 * MMCONF_UNIT - 1) & MMCONF_MASK; - - /* - * need to check if the range is in the high mmio range that is - * above 4G - */ - hi_mmio_num = 0; - for (i = 0; i < 8; i++) { - u32 reg; - u64 start; - u64 end; - reg = read_pci_config(bus, slot, 1, 0x80 + (i << 3)); - if (!(reg & 3)) - continue; - - start = (u64)(reg & 0xffffff00) << 8; /* 39:16 on 31:8*/ - reg = read_pci_config(bus, slot, 1, 0x84 + (i << 3)); - end = ((u64)(reg & 0xffffff00) << 8) | 0xffff; /* 39:16 on 31:8*/ - - if (end < tom2) - continue; - - range[hi_mmio_num].start = start; - range[hi_mmio_num].end = end; - hi_mmio_num++; - } - - if (!hi_mmio_num) - goto out; - - /* sort the range */ - sort(range, hi_mmio_num, sizeof(struct range), cmp_range, NULL); - - if (range[hi_mmio_num - 1].end < base) - goto out; - if (range[0].start > base + MMCONF_SIZE) - goto out; - - /* need to find one window */ - base = (range[0].start & MMCONF_MASK) - MMCONF_UNIT; - if ((base > tom2) && BASE_VALID(base)) - goto out; - base = (range[hi_mmio_num - 1].end + MMCONF_UNIT) & MMCONF_MASK; - if (BASE_VALID(base)) - goto out; - /* need to find window between ranges */ - for (i = 1; i < hi_mmio_num; i++) { - base = (range[i - 1].end + MMCONF_UNIT) & MMCONF_MASK; - val = range[i].start & MMCONF_MASK; - if (val >= base + MMCONF_SIZE && BASE_VALID(base)) - goto out; - } - return; - -out: - fam10h_pci_mmconf_base = base; -} - -void __cpuinit fam10h_check_enable_mmcfg(void) -{ - u64 val; - u32 address; - - if (!(pci_probe & PCI_CHECK_ENABLE_AMD_MMCONF)) - return; - - address = MSR_FAM10H_MMIO_CONF_BASE; - rdmsrl(address, val); - - /* try to make sure that AP's setting is identical to BSP setting */ - if (val & FAM10H_MMIO_CONF_ENABLE) { - unsigned busnbits; - busnbits = (val >> FAM10H_MMIO_CONF_BUSRANGE_SHIFT) & - FAM10H_MMIO_CONF_BUSRANGE_MASK; - - /* only trust the one handle 256 buses, if acpi=off */ - if (!acpi_pci_disabled || busnbits >= 8) { - u64 base = val & MMCONF_MASK; - - if (!fam10h_pci_mmconf_base) { - fam10h_pci_mmconf_base = base; - return; - } else if (fam10h_pci_mmconf_base == base) - return; - } - } - - /* - * if it is not enabled, try to enable it and assume only one segment - * with 256 buses - */ - get_fam10h_pci_mmconf_base(); - if (!fam10h_pci_mmconf_base) { - pci_probe &= ~PCI_CHECK_ENABLE_AMD_MMCONF; - return; - } - - printk(KERN_INFO "Enable MMCONFIG on AMD Family 10h\n"); - val &= ~((FAM10H_MMIO_CONF_BASE_MASK<<FAM10H_MMIO_CONF_BASE_SHIFT) | - (FAM10H_MMIO_CONF_BUSRANGE_MASK<<FAM10H_MMIO_CONF_BUSRANGE_SHIFT)); - val |= fam10h_pci_mmconf_base | (8 << FAM10H_MMIO_CONF_BUSRANGE_SHIFT) | - FAM10H_MMIO_CONF_ENABLE; - wrmsrl(address, val); -} - -static int __init set_check_enable_amd_mmconf(const struct dmi_system_id *d) -{ - pci_probe |= PCI_CHECK_ENABLE_AMD_MMCONF; - return 0; -} - -static const struct dmi_system_id __initconst mmconf_dmi_table[] = { - { - .callback = set_check_enable_amd_mmconf, - .ident = "Sun Microsystems Machine", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Sun Microsystems"), - }, - }, - {} -}; - -/* Called from a __cpuinit function, but only on the BSP. */ -void __ref check_enable_amd_mmconf_dmi(void) -{ - dmi_check_system(mmconf_dmi_table); -} |