Merge /spare/repo/linux-2.6/

[pandora-kernel.git] / arch / x86_64 / kernel / mpparse.c

diff --git a/arch/x86_64/kernel/mpparse.c b/arch/x86_64/kernel/mpparse.c
index f221231..79c362d 100644 (file)
--- a/arch/x86_64/kernel/mpparse.c
+++ b/arch/x86_64/kernel/mpparse.c
@@ -23,6 +23,7 @@
 #include <linux/kernel_stat.h>
 #include <linux/mc146818rtc.h>
 #include <linux/acpi.h>
+#include <linux/module.h>
 
 #include <asm/smp.h>
 #include <asm/mtrr.h>
@@ -30,6 +31,7 @@
 #include <asm/pgalloc.h>
 #include <asm/io_apic.h>
 #include <asm/proto.h>
+#include <asm/acpi.h>
 
 /* Have we found an MP table */
 int smp_found_config;
@@ -44,7 +46,8 @@ int acpi_found_madt;
 int apic_version [MAX_APICS];
 unsigned char mp_bus_id_to_type [MAX_MP_BUSSES] = { [0 ... MAX_MP_BUSSES-1] = -1 };
 int mp_bus_id_to_pci_bus [MAX_MP_BUSSES] = { [0 ... MAX_MP_BUSSES-1] = -1 };
-cpumask_t pci_bus_to_cpumask [256] = { [0 ... 255] = CPU_MASK_ALL };
+unsigned char pci_bus_to_node [256];
+EXPORT_SYMBOL(pci_bus_to_node);
 
 static int mp_current_pci_id = 0;
 /* I/O APIC entries */
@@ -106,7 +109,8 @@ static int __init mpf_checksum(unsigned char *mp, int len)
 
 static void __init MP_processor_info (struct mpc_config_processor *m)
 {
-       int ver;
+       int ver, cpu;
+       static int found_bsp=0;
 
        if (!(m->mpc_cpuflag & CPU_ENABLED))
                return;
@@ -126,13 +130,8 @@ static void __init MP_processor_info (struct mpc_config_processor *m)
                        " Processor ignored.\n", NR_CPUS);
                return;
        }
-       if (num_processors >= maxcpus) {
-               printk(KERN_WARNING "WARNING: maxcpus limit of %i reached."
-                       " Processor ignored.\n", maxcpus);
-               return;
-       }
 
-       num_processors++;
+       cpu = num_processors++;
 
        if (m->mpc_apicid > MAX_APICS) {
                printk(KERN_ERR "Processor #%d INVALID. (Max ID: %d).\n",
@@ -150,7 +149,24 @@ static void __init MP_processor_info (struct mpc_config_processor *m)
                ver = 0x10;
        }
        apic_version[m->mpc_apicid] = ver;
-       bios_cpu_apicid[num_processors - 1] = m->mpc_apicid;
+       if (m->mpc_cpuflag & CPU_BOOTPROCESSOR) {
+               /*
+                * bios_cpu_apicid is required to have processors listed
+                * in same order as logical cpu numbers. Hence the first
+                * entry is BSP, and so on.
+                */
+               cpu = 0;
+
+               bios_cpu_apicid[0] = m->mpc_apicid;
+               x86_cpu_to_apicid[0] = m->mpc_apicid;
+               found_bsp = 1;
+       } else
+               cpu = num_processors - found_bsp;
+       bios_cpu_apicid[cpu] = m->mpc_apicid;
+       x86_cpu_to_apicid[cpu] = m->mpc_apicid;
+
+       cpu_set(cpu, cpu_possible_map);
+       cpu_set(cpu, cpu_present_map);
 }
 
 static void __init MP_bus_info (struct mpc_config_bus *m)
@@ -895,11 +911,20 @@ void __init mp_config_acpi_legacy_irqs (void)
        return;
 }
 
+#define MAX_GSI_NUM    4096
+
 int mp_register_gsi(u32 gsi, int edge_level, int active_high_low)
 {
        int                     ioapic = -1;
        int                     ioapic_pin = 0;
        int                     idx, bit = 0;
+       static int              pci_irq = 16;
+       /*
+        * Mapping between Global System Interrupts, which
+        * represent all possible interrupts, to the IRQs
+        * assigned to actual devices.
+        */
+       static int              gsi_to_irq[MAX_GSI_NUM];
 
        if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
                return gsi;
@@ -934,11 +959,34 @@ int mp_register_gsi(u32 gsi, int edge_level, int active_high_low)
        if ((1<<bit) & mp_ioapic_routing[ioapic].pin_programmed[idx]) {
                Dprintk(KERN_DEBUG "Pin %d-%d already programmed\n",
                        mp_ioapic_routing[ioapic].apic_id, ioapic_pin);
-               return gsi;
+               return gsi_to_irq[gsi];
        }
 
        mp_ioapic_routing[ioapic].pin_programmed[idx] |= (1<<bit);
 
+       if (edge_level) {
+               /*
+                * For PCI devices assign IRQs in order, avoiding gaps
+                * due to unused I/O APIC pins.
+                */
+               int irq = gsi;
+               if (gsi < MAX_GSI_NUM) {
+                       if (gsi > 15)
+                               gsi = pci_irq++;
+#ifdef CONFIG_ACPI_BUS
+                       /*
+                        * Don't assign IRQ used by ACPI SCI
+                        */
+                       if (gsi == acpi_fadt.sci_int)
+                               gsi = pci_irq++;
+#endif
+                       gsi_to_irq[irq] = gsi;
+               } else {
+                       printk(KERN_ERR "GSI %u is too high\n", gsi);
+                       return gsi;
+               }
+       }
+
        io_apic_set_pci_routing(ioapic, ioapic_pin, gsi,
                edge_level == ACPI_EDGE_SENSITIVE ? 0 : 1,
                active_high_low == ACPI_ACTIVE_HIGH ? 0 : 1);