diff options
Diffstat (limited to 'arch/x86/kernel/apic/x2apic_uv_x.c')
| -rw-r--r-- | arch/x86/kernel/apic/x2apic_uv_x.c | 82 |
1 files changed, 67 insertions, 15 deletions
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index 794f6eb54cd3..1191ac1c9d25 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -25,6 +25,7 @@ #include <linux/kdebug.h> #include <linux/delay.h> #include <linux/crash_dump.h> +#include <linux/reboot.h> #include <asm/uv/uv_mmrs.h> #include <asm/uv/uv_hub.h> @@ -36,7 +37,6 @@ #include <asm/ipi.h> #include <asm/smp.h> #include <asm/x86_init.h> -#include <asm/emergency-restart.h> #include <asm/nmi.h> /* BMC sets a bit this MMR non-zero before sending an NMI */ @@ -51,6 +51,8 @@ DEFINE_PER_CPU(int, x2apic_extra_bits); static enum uv_system_type uv_system_type; static u64 gru_start_paddr, gru_end_paddr; +static u64 gru_dist_base, gru_first_node_paddr = -1LL, gru_last_node_paddr; +static u64 gru_dist_lmask, gru_dist_umask; static union uvh_apicid uvh_apicid; int uv_min_hub_revision_id; EXPORT_SYMBOL_GPL(uv_min_hub_revision_id); @@ -72,7 +74,20 @@ static unsigned long __init uv_early_read_mmr(unsigned long addr) static inline bool is_GRU_range(u64 start, u64 end) { - return start >= gru_start_paddr && end <= gru_end_paddr; + if (gru_dist_base) { + u64 su = start & gru_dist_umask; /* upper (incl pnode) bits */ + u64 sl = start & gru_dist_lmask; /* base offset bits */ + u64 eu = end & gru_dist_umask; + u64 el = end & gru_dist_lmask; + + /* Must reside completely within a single GRU range */ + return (sl == gru_dist_base && el == gru_dist_base && + su >= gru_first_node_paddr && + su <= gru_last_node_paddr && + eu == su); + } else { + return start >= gru_start_paddr && end <= gru_end_paddr; + } } static bool uv_is_untracked_pat_range(u64 start, u64 end) @@ -194,7 +209,7 @@ EXPORT_SYMBOL_GPL(uv_possible_blades); unsigned long sn_rtc_cycles_per_second; EXPORT_SYMBOL(sn_rtc_cycles_per_second); -static int __cpuinit uv_wakeup_secondary(int phys_apicid, unsigned long start_rip) +static int uv_wakeup_secondary(int phys_apicid, unsigned long start_rip) { #ifdef CONFIG_SMP unsigned long val; @@ -401,7 +416,7 @@ static struct apic __refdata apic_x2apic_uv_x = { .safe_wait_icr_idle = native_safe_x2apic_wait_icr_idle, }; -static __cpuinit void set_x2apic_extra_bits(int pnode) +static void set_x2apic_extra_bits(int pnode) { __this_cpu_write(x2apic_extra_bits, pnode << uvh_apicid.s.pnode_shift); } @@ -463,26 +478,63 @@ static __init void map_high(char *id, unsigned long base, int pshift, pr_info("UV: Map %s_HI base address NULL\n", id); return; } - pr_info("UV: Map %s_HI 0x%lx - 0x%lx\n", id, paddr, paddr + bytes); + pr_debug("UV: Map %s_HI 0x%lx - 0x%lx\n", id, paddr, paddr + bytes); if (map_type == map_uc) init_extra_mapping_uc(paddr, bytes); else init_extra_mapping_wb(paddr, bytes); } +static __init void map_gru_distributed(unsigned long c) +{ + union uvh_rh_gam_gru_overlay_config_mmr_u gru; + u64 paddr; + unsigned long bytes; + int nid; + + gru.v = c; + /* only base bits 42:28 relevant in dist mode */ + gru_dist_base = gru.v & 0x000007fff0000000UL; + if (!gru_dist_base) { + pr_info("UV: Map GRU_DIST base address NULL\n"); + return; + } + bytes = 1UL << UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR_BASE_SHFT; + gru_dist_lmask = ((1UL << uv_hub_info->m_val) - 1) & ~(bytes - 1); + gru_dist_umask = ~((1UL << uv_hub_info->m_val) - 1); + gru_dist_base &= gru_dist_lmask; /* Clear bits above M */ + for_each_online_node(nid) { + paddr = ((u64)uv_node_to_pnode(nid) << uv_hub_info->m_val) | + gru_dist_base; + init_extra_mapping_wb(paddr, bytes); + gru_first_node_paddr = min(paddr, gru_first_node_paddr); + gru_last_node_paddr = max(paddr, gru_last_node_paddr); + } + /* Save upper (63:M) bits of address only for is_GRU_range */ + gru_first_node_paddr &= gru_dist_umask; + gru_last_node_paddr &= gru_dist_umask; + pr_debug("UV: Map GRU_DIST base 0x%016llx 0x%016llx - 0x%016llx\n", + gru_dist_base, gru_first_node_paddr, gru_last_node_paddr); +} + static __init void map_gru_high(int max_pnode) { union uvh_rh_gam_gru_overlay_config_mmr_u gru; int shift = UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR_BASE_SHFT; gru.v = uv_read_local_mmr(UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR); - if (gru.s.enable) { - map_high("GRU", gru.s.base, shift, shift, max_pnode, map_wb); - gru_start_paddr = ((u64)gru.s.base << shift); - gru_end_paddr = gru_start_paddr + (1UL << shift) * (max_pnode + 1); - } else { + if (!gru.s.enable) { pr_info("UV: GRU disabled\n"); + return; + } + + if (is_uv3_hub() && gru.s3.mode) { + map_gru_distributed(gru.v); + return; } + map_high("GRU", gru.s.base, shift, shift, max_pnode, map_wb); + gru_start_paddr = ((u64)gru.s.base << shift); + gru_end_paddr = gru_start_paddr + (1UL << shift) * (max_pnode + 1); } static __init void map_mmr_high(int max_pnode) @@ -683,7 +735,7 @@ static void uv_heartbeat(unsigned long ignored) mod_timer_pinned(timer, jiffies + SCIR_CPU_HB_INTERVAL); } -static void __cpuinit uv_heartbeat_enable(int cpu) +static void uv_heartbeat_enable(int cpu) { while (!uv_cpu_hub_info(cpu)->scir.enabled) { struct timer_list *timer = &uv_cpu_hub_info(cpu)->scir.timer; @@ -700,7 +752,7 @@ static void __cpuinit uv_heartbeat_enable(int cpu) } #ifdef CONFIG_HOTPLUG_CPU -static void __cpuinit uv_heartbeat_disable(int cpu) +static void uv_heartbeat_disable(int cpu) { if (uv_cpu_hub_info(cpu)->scir.enabled) { uv_cpu_hub_info(cpu)->scir.enabled = 0; @@ -712,8 +764,8 @@ static void __cpuinit uv_heartbeat_disable(int cpu) /* * cpu hotplug notifier */ -static __cpuinit int uv_scir_cpu_notify(struct notifier_block *self, - unsigned long action, void *hcpu) +static int uv_scir_cpu_notify(struct notifier_block *self, unsigned long action, + void *hcpu) { long cpu = (long)hcpu; @@ -783,7 +835,7 @@ int uv_set_vga_state(struct pci_dev *pdev, bool decode, * Called on each cpu to initialize the per_cpu UV data area. * FIXME: hotplug not supported yet */ -void __cpuinit uv_cpu_init(void) +void uv_cpu_init(void) { /* CPU 0 initilization will be done via uv_system_init. */ if (!uv_blade_info) |