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Date: Wed, 28 Jan 2009 23:42:27 +0000
From: Ingo Molnar <mingo@...e.hu>
To: linux-kernel@...r.kernel.org
Cc: "H. Peter Anvin" <hpa@...or.com>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...e.hu>
Subject: [PATCH 081/114] x86: remove subarchitecture support code
Remove remaining bits of the subarchitecture code. Now that all the
special platforms are runtime probed and runtime handled, we can remove
these facilities.
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
arch/x86/Makefile | 5 -
arch/x86/kernel/Makefile | 2 +-
arch/x86/kernel/probe_32.c | 248 ++++++++++++++++++++++++++++++++++++++++
arch/x86/mach-generic/Makefile | 7 -
arch/x86/mach-generic/probe.c | 156 -------------------------
5 files changed, 249 insertions(+), 169 deletions(-)
create mode 100644 arch/x86/kernel/probe_32.c
delete mode 100644 arch/x86/mach-generic/Makefile
delete mode 100644 arch/x86/mach-generic/probe.c
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index cacee98..799a0d9 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -113,11 +113,6 @@ mcore-y := arch/x86/mach-default/
mflags-$(CONFIG_X86_VOYAGER) := -Iarch/x86/include/asm/mach-voyager
mcore-$(CONFIG_X86_VOYAGER) := arch/x86/mach-voyager/
-# generic subarchitecture
-mflags-$(CONFIG_X86_GENERICARCH):= -Iarch/x86/include/asm/mach-generic
-fcore-$(CONFIG_X86_GENERICARCH) += arch/x86/mach-generic/
-mcore-$(CONFIG_X86_GENERICARCH) := arch/x86/mach-default/
-
# default subarch .h files
mflags-y += -Iarch/x86/include/asm/mach-default
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index ad6df80..61aeca3 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -30,7 +30,7 @@ obj-y += traps.o irq.o irq_$(BITS).o dumpstack_$(BITS).o
obj-y += time_$(BITS).o ioport.o ldt.o dumpstack.o
obj-y += setup.o i8259.o irqinit_$(BITS).o
obj-$(CONFIG_X86_VISWS) += visws_quirks.o
-obj-$(CONFIG_X86_32) += probe_roms_32.o
+obj-$(CONFIG_X86_32) += probe_32.o probe_roms_32.o
obj-$(CONFIG_X86_32) += sys_i386_32.o i386_ksyms_32.o
obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o
obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o
diff --git a/arch/x86/kernel/probe_32.c b/arch/x86/kernel/probe_32.c
new file mode 100644
index 0000000..a6fba69
--- /dev/null
+++ b/arch/x86/kernel/probe_32.c
@@ -0,0 +1,248 @@
+/*
+ * Default generic APIC driver. This handles up to 8 CPUs.
+ *
+ * Copyright 2003 Andi Kleen, SuSE Labs.
+ * Subject to the GNU Public License, v.2
+ *
+ * Generic x86 APIC driver probe layer.
+ */
+#include <linux/threads.h>
+#include <linux/cpumask.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/ctype.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <asm/fixmap.h>
+#include <asm/mpspec.h>
+#include <asm/apicdef.h>
+#include <asm/genapic.h>
+#include <asm/setup.h>
+
+#include <linux/threads.h>
+#include <linux/cpumask.h>
+#include <asm/mpspec.h>
+#include <asm/genapic.h>
+#include <asm/fixmap.h>
+#include <asm/apicdef.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/smp.h>
+#include <linux/init.h>
+#include <asm/genapic.h>
+#include <asm/ipi.h>
+
+static void default_vector_allocation_domain(int cpu, struct cpumask *retmask)
+{
+ /*
+ * Careful. Some cpus do not strictly honor the set of cpus
+ * specified in the interrupt destination when using lowest
+ * priority interrupt delivery mode.
+ *
+ * In particular there was a hyperthreading cpu observed to
+ * deliver interrupts to the wrong hyperthread when only one
+ * hyperthread was specified in the interrupt desitination.
+ */
+ *retmask = (cpumask_t) { { [0] = APIC_ALL_CPUS } };
+}
+
+/* should be called last. */
+static int probe_default(void)
+{
+ return 1;
+}
+
+struct genapic apic_default = {
+
+ .name = "default",
+ .probe = probe_default,
+ .acpi_madt_oem_check = NULL,
+ .apic_id_registered = default_apic_id_registered,
+
+ .irq_delivery_mode = dest_LowestPrio,
+ /* logical delivery broadcast to all CPUs: */
+ .irq_dest_mode = 1,
+
+ .target_cpus = default_target_cpus,
+ .disable_esr = 0,
+ .dest_logical = APIC_DEST_LOGICAL,
+ .check_apicid_used = default_check_apicid_used,
+ .check_apicid_present = default_check_apicid_present,
+
+ .vector_allocation_domain = default_vector_allocation_domain,
+ .init_apic_ldr = default_init_apic_ldr,
+
+ .ioapic_phys_id_map = default_ioapic_phys_id_map,
+ .setup_apic_routing = default_setup_apic_routing,
+ .multi_timer_check = NULL,
+ .apicid_to_node = default_apicid_to_node,
+ .cpu_to_logical_apicid = default_cpu_to_logical_apicid,
+ .cpu_present_to_apicid = default_cpu_present_to_apicid,
+ .apicid_to_cpu_present = default_apicid_to_cpu_present,
+ .setup_portio_remap = NULL,
+ .check_phys_apicid_present = default_check_phys_apicid_present,
+ .enable_apic_mode = NULL,
+ .phys_pkg_id = default_phys_pkg_id,
+ .mps_oem_check = NULL,
+
+ .get_apic_id = default_get_apic_id,
+ .set_apic_id = NULL,
+ .apic_id_mask = 0x0F << 24,
+
+ .cpu_mask_to_apicid = default_cpu_mask_to_apicid,
+ .cpu_mask_to_apicid_and = default_cpu_mask_to_apicid_and,
+
+ .send_IPI_mask = default_send_IPI_mask,
+ .send_IPI_mask_allbutself = NULL,
+ .send_IPI_allbutself = default_send_IPI_allbutself,
+ .send_IPI_all = default_send_IPI_all,
+ .send_IPI_self = NULL,
+
+ .wakeup_cpu = NULL,
+ .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW,
+ .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH,
+
+ .wait_for_init_deassert = default_wait_for_init_deassert,
+
+ .smp_callin_clear_local_apic = NULL,
+ .store_NMI_vector = NULL,
+ .inquire_remote_apic = default_inquire_remote_apic,
+};
+
+extern struct genapic apic_numaq;
+extern struct genapic apic_summit;
+extern struct genapic apic_bigsmp;
+extern struct genapic apic_es7000;
+extern struct genapic apic_default;
+
+struct genapic *apic = &apic_default;
+
+static struct genapic *apic_probe[] __initdata = {
+#ifdef CONFIG_X86_NUMAQ
+ &apic_numaq,
+#endif
+#ifdef CONFIG_X86_SUMMIT
+ &apic_summit,
+#endif
+#ifdef CONFIG_X86_BIGSMP
+ &apic_bigsmp,
+#endif
+#ifdef CONFIG_X86_ES7000
+ &apic_es7000,
+#endif
+ &apic_default, /* must be last */
+ NULL,
+};
+
+static int cmdline_apic __initdata;
+static int __init parse_apic(char *arg)
+{
+ int i;
+
+ if (!arg)
+ return -EINVAL;
+
+ for (i = 0; apic_probe[i]; i++) {
+ if (!strcmp(apic_probe[i]->name, arg)) {
+ apic = apic_probe[i];
+ cmdline_apic = 1;
+ return 0;
+ }
+ }
+
+ if (x86_quirks->update_genapic)
+ x86_quirks->update_genapic();
+
+ /* Parsed again by __setup for debug/verbose */
+ return 0;
+}
+early_param("apic", parse_apic);
+
+void __init generic_bigsmp_probe(void)
+{
+#ifdef CONFIG_X86_BIGSMP
+ /*
+ * This routine is used to switch to bigsmp mode when
+ * - There is no apic= option specified by the user
+ * - generic_apic_probe() has chosen apic_default as the sub_arch
+ * - we find more than 8 CPUs in acpi LAPIC listing with xAPIC support
+ */
+
+ if (!cmdline_apic && apic == &apic_default) {
+ if (apic_bigsmp.probe()) {
+ apic = &apic_bigsmp;
+ if (x86_quirks->update_genapic)
+ x86_quirks->update_genapic();
+ printk(KERN_INFO "Overriding APIC driver with %s\n",
+ apic->name);
+ }
+ }
+#endif
+}
+
+void __init generic_apic_probe(void)
+{
+ if (!cmdline_apic) {
+ int i;
+ for (i = 0; apic_probe[i]; i++) {
+ if (apic_probe[i]->probe()) {
+ apic = apic_probe[i];
+ break;
+ }
+ }
+ /* Not visible without early console */
+ if (!apic_probe[i])
+ panic("Didn't find an APIC driver");
+
+ if (x86_quirks->update_genapic)
+ x86_quirks->update_genapic();
+ }
+ printk(KERN_INFO "Using APIC driver %s\n", apic->name);
+}
+
+/* These functions can switch the APIC even after the initial ->probe() */
+
+int __init
+generic_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
+{
+ int i;
+
+ for (i = 0; apic_probe[i]; ++i) {
+ if (!apic_probe[i]->mps_oem_check)
+ continue;
+ if (!apic_probe[i]->mps_oem_check(mpc, oem, productid))
+ continue;
+
+ if (!cmdline_apic) {
+ apic = apic_probe[i];
+ if (x86_quirks->update_genapic)
+ x86_quirks->update_genapic();
+ printk(KERN_INFO "Switched to APIC driver `%s'.\n",
+ apic->name);
+ }
+ return 1;
+ }
+ return 0;
+}
+
+int __init default_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
+{
+ int i;
+
+ for (i = 0; apic_probe[i]; ++i) {
+ if (!apic_probe[i]->acpi_madt_oem_check)
+ continue;
+ if (!apic_probe[i]->acpi_madt_oem_check(oem_id, oem_table_id))
+ continue;
+
+ if (!cmdline_apic) {
+ apic = apic_probe[i];
+ if (x86_quirks->update_genapic)
+ x86_quirks->update_genapic();
+ printk(KERN_INFO "Switched to APIC driver `%s'.\n",
+ apic->name);
+ }
+ return 1;
+ }
+ return 0;
+}
diff --git a/arch/x86/mach-generic/Makefile b/arch/x86/mach-generic/Makefile
deleted file mode 100644
index 05e4a7c..0000000
--- a/arch/x86/mach-generic/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-#
-# Makefile for the generic architecture
-#
-
-EXTRA_CFLAGS := -Iarch/x86/kernel
-
-obj-y := probe.o default.o
diff --git a/arch/x86/mach-generic/probe.c b/arch/x86/mach-generic/probe.c
deleted file mode 100644
index c03c722..0000000
--- a/arch/x86/mach-generic/probe.c
+++ /dev/null
@@ -1,156 +0,0 @@
-/*
- * Copyright 2003 Andi Kleen, SuSE Labs.
- * Subject to the GNU Public License, v.2
- *
- * Generic x86 APIC driver probe layer.
- */
-#include <linux/threads.h>
-#include <linux/cpumask.h>
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/ctype.h>
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <asm/fixmap.h>
-#include <asm/mpspec.h>
-#include <asm/apicdef.h>
-#include <asm/genapic.h>
-#include <asm/setup.h>
-
-extern struct genapic apic_numaq;
-extern struct genapic apic_summit;
-extern struct genapic apic_bigsmp;
-extern struct genapic apic_es7000;
-extern struct genapic apic_default;
-
-struct genapic *apic = &apic_default;
-
-static struct genapic *apic_probe[] __initdata = {
-#ifdef CONFIG_X86_NUMAQ
- &apic_numaq,
-#endif
-#ifdef CONFIG_X86_SUMMIT
- &apic_summit,
-#endif
-#ifdef CONFIG_X86_BIGSMP
- &apic_bigsmp,
-#endif
-#ifdef CONFIG_X86_ES7000
- &apic_es7000,
-#endif
- &apic_default, /* must be last */
- NULL,
-};
-
-static int cmdline_apic __initdata;
-static int __init parse_apic(char *arg)
-{
- int i;
-
- if (!arg)
- return -EINVAL;
-
- for (i = 0; apic_probe[i]; i++) {
- if (!strcmp(apic_probe[i]->name, arg)) {
- apic = apic_probe[i];
- cmdline_apic = 1;
- return 0;
- }
- }
-
- if (x86_quirks->update_genapic)
- x86_quirks->update_genapic();
-
- /* Parsed again by __setup for debug/verbose */
- return 0;
-}
-early_param("apic", parse_apic);
-
-void __init generic_bigsmp_probe(void)
-{
-#ifdef CONFIG_X86_BIGSMP
- /*
- * This routine is used to switch to bigsmp mode when
- * - There is no apic= option specified by the user
- * - generic_apic_probe() has chosen apic_default as the sub_arch
- * - we find more than 8 CPUs in acpi LAPIC listing with xAPIC support
- */
-
- if (!cmdline_apic && apic == &apic_default) {
- if (apic_bigsmp.probe()) {
- apic = &apic_bigsmp;
- if (x86_quirks->update_genapic)
- x86_quirks->update_genapic();
- printk(KERN_INFO "Overriding APIC driver with %s\n",
- apic->name);
- }
- }
-#endif
-}
-
-void __init generic_apic_probe(void)
-{
- if (!cmdline_apic) {
- int i;
- for (i = 0; apic_probe[i]; i++) {
- if (apic_probe[i]->probe()) {
- apic = apic_probe[i];
- break;
- }
- }
- /* Not visible without early console */
- if (!apic_probe[i])
- panic("Didn't find an APIC driver");
-
- if (x86_quirks->update_genapic)
- x86_quirks->update_genapic();
- }
- printk(KERN_INFO "Using APIC driver %s\n", apic->name);
-}
-
-/* These functions can switch the APIC even after the initial ->probe() */
-
-int __init
-generic_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid)
-{
- int i;
-
- for (i = 0; apic_probe[i]; ++i) {
- if (!apic_probe[i]->mps_oem_check)
- continue;
- if (!apic_probe[i]->mps_oem_check(mpc, oem, productid))
- continue;
-
- if (!cmdline_apic) {
- apic = apic_probe[i];
- if (x86_quirks->update_genapic)
- x86_quirks->update_genapic();
- printk(KERN_INFO "Switched to APIC driver `%s'.\n",
- apic->name);
- }
- return 1;
- }
- return 0;
-}
-
-int __init default_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
-{
- int i;
-
- for (i = 0; apic_probe[i]; ++i) {
- if (!apic_probe[i]->acpi_madt_oem_check)
- continue;
- if (!apic_probe[i]->acpi_madt_oem_check(oem_id, oem_table_id))
- continue;
-
- if (!cmdline_apic) {
- apic = apic_probe[i];
- if (x86_quirks->update_genapic)
- x86_quirks->update_genapic();
- printk(KERN_INFO "Switched to APIC driver `%s'.\n",
- apic->name);
- }
- return 1;
- }
- return 0;
-}
--
1.6.0.2
--
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