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authorAndi Kleen <ak@suse.de>2006-09-26 04:52:37 -0400
committerAndi Kleen <andi@basil.nowhere.org>2006-09-26 04:52:37 -0400
commitf2c2cca3acef8b253a36381d9b469ad4fb08563a (patch)
tree564dc8e108324a8409bc49b133a0ba0d7895ec38 /arch/x86_64/kernel
parent5e6b0bfe5b452957b7be4b6ef181cd41880f8359 (diff)
[PATCH] Remove APIC version/cpu capability mpparse checking/printing
ACPI went to great trouble to get the APIC version and CPU capabilities of different CPUs before passing them to the mpparser. But all that data was used was to print it out. Actually it even faked some data based on the boot cpu, not on the actual CPU being booted. Remove all this code because it's not needed. Cc: len.brown@intel.com Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch/x86_64/kernel')
-rw-r--r--arch/x86_64/kernel/io_apic.c13
-rw-r--r--arch/x86_64/kernel/mpparse.c52
2 files changed, 17 insertions, 48 deletions
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index afac3dbb3729..0491019d4c8d 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -1748,19 +1748,6 @@ device_initcall(ioapic_init_sysfs);
1748 1748
1749#define IO_APIC_MAX_ID 0xFE 1749#define IO_APIC_MAX_ID 0xFE
1750 1750
1751int __init io_apic_get_version (int ioapic)
1752{
1753 union IO_APIC_reg_01 reg_01;
1754 unsigned long flags;
1755
1756 spin_lock_irqsave(&ioapic_lock, flags);
1757 reg_01.raw = io_apic_read(ioapic, 1);
1758 spin_unlock_irqrestore(&ioapic_lock, flags);
1759
1760 return reg_01.bits.version;
1761}
1762
1763
1764int __init io_apic_get_redir_entries (int ioapic) 1751int __init io_apic_get_redir_entries (int ioapic)
1765{ 1752{
1766 union IO_APIC_reg_01 reg_01; 1753 union IO_APIC_reg_01 reg_01;
diff --git a/arch/x86_64/kernel/mpparse.c b/arch/x86_64/kernel/mpparse.c
index d63f849aea2c..32b6977f80c0 100644
--- a/arch/x86_64/kernel/mpparse.c
+++ b/arch/x86_64/kernel/mpparse.c
@@ -41,7 +41,6 @@ int acpi_found_madt;
41 * Various Linux-internal data structures created from the 41 * Various Linux-internal data structures created from the
42 * MP-table. 42 * MP-table.
43 */ 43 */
44unsigned char apic_version [MAX_APICS];
45DECLARE_BITMAP(mp_bus_not_pci, MAX_MP_BUSSES); 44DECLARE_BITMAP(mp_bus_not_pci, MAX_MP_BUSSES);
46int mp_bus_id_to_pci_bus [MAX_MP_BUSSES] = { [0 ... MAX_MP_BUSSES-1] = -1 }; 45int mp_bus_id_to_pci_bus [MAX_MP_BUSSES] = { [0 ... MAX_MP_BUSSES-1] = -1 };
47 46
@@ -94,24 +93,21 @@ static int __init mpf_checksum(unsigned char *mp, int len)
94static void __cpuinit MP_processor_info (struct mpc_config_processor *m) 93static void __cpuinit MP_processor_info (struct mpc_config_processor *m)
95{ 94{
96 int cpu; 95 int cpu;
97 unsigned char ver;
98 cpumask_t tmp_map; 96 cpumask_t tmp_map;
97 char *bootup_cpu = "";
99 98
100 if (!(m->mpc_cpuflag & CPU_ENABLED)) { 99 if (!(m->mpc_cpuflag & CPU_ENABLED)) {
101 disabled_cpus++; 100 disabled_cpus++;
102 return; 101 return;
103 } 102 }
104 103
105 printk(KERN_INFO "Processor #%d %d:%d APIC version %d\n",
106 m->mpc_apicid,
107 (m->mpc_cpufeature & CPU_FAMILY_MASK)>>8,
108 (m->mpc_cpufeature & CPU_MODEL_MASK)>>4,
109 m->mpc_apicver);
110
111 if (m->mpc_cpuflag & CPU_BOOTPROCESSOR) { 104 if (m->mpc_cpuflag & CPU_BOOTPROCESSOR) {
112 Dprintk(" Bootup CPU\n"); 105 bootup_cpu = " (Bootup-CPU)";
113 boot_cpu_id = m->mpc_apicid; 106 boot_cpu_id = m->mpc_apicid;
114 } 107 }
108
109 printk(KERN_INFO "Processor #%d%s\n", m->mpc_apicid, bootup_cpu);
110
115 if (num_processors >= NR_CPUS) { 111 if (num_processors >= NR_CPUS) {
116 printk(KERN_WARNING "WARNING: NR_CPUS limit of %i reached." 112 printk(KERN_WARNING "WARNING: NR_CPUS limit of %i reached."
117 " Processor ignored.\n", NR_CPUS); 113 " Processor ignored.\n", NR_CPUS);
@@ -129,17 +125,7 @@ static void __cpuinit MP_processor_info (struct mpc_config_processor *m)
129 return; 125 return;
130 } 126 }
131#endif 127#endif
132 ver = m->mpc_apicver;
133
134 physid_set(m->mpc_apicid, phys_cpu_present_map); 128 physid_set(m->mpc_apicid, phys_cpu_present_map);
135 /*
136 * Validate version
137 */
138 if (ver == 0x0) {
139 printk(KERN_ERR "BIOS bug, APIC version is 0 for CPU#%d! fixing up to 0x10. (tell your hw vendor)\n", m->mpc_apicid);
140 ver = 0x10;
141 }
142 apic_version[m->mpc_apicid] = ver;
143 if (m->mpc_cpuflag & CPU_BOOTPROCESSOR) { 129 if (m->mpc_cpuflag & CPU_BOOTPROCESSOR) {
144 /* 130 /*
145 * bios_cpu_apicid is required to have processors listed 131 * bios_cpu_apicid is required to have processors listed
@@ -179,8 +165,8 @@ static void __init MP_ioapic_info (struct mpc_config_ioapic *m)
179 if (!(m->mpc_flags & MPC_APIC_USABLE)) 165 if (!(m->mpc_flags & MPC_APIC_USABLE))
180 return; 166 return;
181 167
182 printk("I/O APIC #%d Version %d at 0x%X.\n", 168 printk("I/O APIC #%d at 0x%X.\n",
183 m->mpc_apicid, m->mpc_apicver, m->mpc_apicaddr); 169 m->mpc_apicid, m->mpc_apicaddr);
184 if (nr_ioapics >= MAX_IO_APICS) { 170 if (nr_ioapics >= MAX_IO_APICS) {
185 printk(KERN_ERR "Max # of I/O APICs (%d) exceeded (found %d).\n", 171 printk(KERN_ERR "Max # of I/O APICs (%d) exceeded (found %d).\n",
186 MAX_IO_APICS, nr_ioapics); 172 MAX_IO_APICS, nr_ioapics);
@@ -413,13 +399,10 @@ static inline void __init construct_default_ISA_mptable(int mpc_default_type)
413 * 2 CPUs, numbered 0 & 1. 399 * 2 CPUs, numbered 0 & 1.
414 */ 400 */
415 processor.mpc_type = MP_PROCESSOR; 401 processor.mpc_type = MP_PROCESSOR;
416 /* Either an integrated APIC or a discrete 82489DX. */ 402 processor.mpc_apicver = 0;
417 processor.mpc_apicver = mpc_default_type > 4 ? 0x10 : 0x01;
418 processor.mpc_cpuflag = CPU_ENABLED; 403 processor.mpc_cpuflag = CPU_ENABLED;
419 processor.mpc_cpufeature = (boot_cpu_data.x86 << 8) | 404 processor.mpc_cpufeature = 0;
420 (boot_cpu_data.x86_model << 4) | 405 processor.mpc_featureflag = 0;
421 boot_cpu_data.x86_mask;
422 processor.mpc_featureflag = boot_cpu_data.x86_capability[0];
423 processor.mpc_reserved[0] = 0; 406 processor.mpc_reserved[0] = 0;
424 processor.mpc_reserved[1] = 0; 407 processor.mpc_reserved[1] = 0;
425 for (i = 0; i < 2; i++) { 408 for (i = 0; i < 2; i++) {
@@ -448,7 +431,7 @@ static inline void __init construct_default_ISA_mptable(int mpc_default_type)
448 431
449 ioapic.mpc_type = MP_IOAPIC; 432 ioapic.mpc_type = MP_IOAPIC;
450 ioapic.mpc_apicid = 2; 433 ioapic.mpc_apicid = 2;
451 ioapic.mpc_apicver = mpc_default_type > 4 ? 0x10 : 0x01; 434 ioapic.mpc_apicver = 0;
452 ioapic.mpc_flags = MPC_APIC_USABLE; 435 ioapic.mpc_flags = MPC_APIC_USABLE;
453 ioapic.mpc_apicaddr = 0xFEC00000; 436 ioapic.mpc_apicaddr = 0xFEC00000;
454 MP_ioapic_info(&ioapic); 437 MP_ioapic_info(&ioapic);
@@ -640,12 +623,11 @@ void __cpuinit mp_register_lapic (u8 id, u8 enabled)
640 623
641 processor.mpc_type = MP_PROCESSOR; 624 processor.mpc_type = MP_PROCESSOR;
642 processor.mpc_apicid = id; 625 processor.mpc_apicid = id;
643 processor.mpc_apicver = GET_APIC_VERSION(apic_read(APIC_LVR)); 626 processor.mpc_apicver = 0;
644 processor.mpc_cpuflag = (enabled ? CPU_ENABLED : 0); 627 processor.mpc_cpuflag = (enabled ? CPU_ENABLED : 0);
645 processor.mpc_cpuflag |= (boot_cpu ? CPU_BOOTPROCESSOR : 0); 628 processor.mpc_cpuflag |= (boot_cpu ? CPU_BOOTPROCESSOR : 0);
646 processor.mpc_cpufeature = (boot_cpu_data.x86 << 8) | 629 processor.mpc_cpufeature = 0;
647 (boot_cpu_data.x86_model << 4) | boot_cpu_data.x86_mask; 630 processor.mpc_featureflag = 0;
648 processor.mpc_featureflag = boot_cpu_data.x86_capability[0];
649 processor.mpc_reserved[0] = 0; 631 processor.mpc_reserved[0] = 0;
650 processor.mpc_reserved[1] = 0; 632 processor.mpc_reserved[1] = 0;
651 633
@@ -700,7 +682,7 @@ void __init mp_register_ioapic(u8 id, u32 address, u32 gsi_base)
700 682
701 set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address); 683 set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address);
702 mp_ioapics[idx].mpc_apicid = id; 684 mp_ioapics[idx].mpc_apicid = id;
703 mp_ioapics[idx].mpc_apicver = io_apic_get_version(idx); 685 mp_ioapics[idx].mpc_apicver = 0;
704 686
705 /* 687 /*
706 * Build basic IRQ lookup table to facilitate gsi->io_apic lookups 688 * Build basic IRQ lookup table to facilitate gsi->io_apic lookups
@@ -711,9 +693,9 @@ void __init mp_register_ioapic(u8 id, u32 address, u32 gsi_base)
711 mp_ioapic_routing[idx].gsi_end = gsi_base + 693 mp_ioapic_routing[idx].gsi_end = gsi_base +
712 io_apic_get_redir_entries(idx); 694 io_apic_get_redir_entries(idx);
713 695
714 printk(KERN_INFO "IOAPIC[%d]: apic_id %d, version %d, address 0x%x, " 696 printk(KERN_INFO "IOAPIC[%d]: apic_id %d, address 0x%x, "
715 "GSI %d-%d\n", idx, mp_ioapics[idx].mpc_apicid, 697 "GSI %d-%d\n", idx, mp_ioapics[idx].mpc_apicid,
716 mp_ioapics[idx].mpc_apicver, mp_ioapics[idx].mpc_apicaddr, 698 mp_ioapics[idx].mpc_apicaddr,
717 mp_ioapic_routing[idx].gsi_start, 699 mp_ioapic_routing[idx].gsi_start,
718 mp_ioapic_routing[idx].gsi_end); 700 mp_ioapic_routing[idx].gsi_end);
719} 701}