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SubjectRe: [Acpi] 2.4.0-test13pre3 acpi circular dependency

The following fixes a circular depency problem between
drivers/acpi/ and arch/{i386,ia64}/kernel/acpi.c. I think the
problem only occurs if you manually tweak the build to make
acpi.o as a module, but it still should be fixed. This patch
also fixes the Makefiles in drivers/acpi so that they do not
blow up if you try to build drivers/acpi as a module (these
are corrections to some variable names, not a new functional
addition to the Makefiles).

I have deliberately not included the patch to change
CONFIG_ACPI into a tristate because I wonder if there is some problem
with acpi.o as a module that I am not aware of that is the reason
that CONFIG_ACPI in the stock kernels is configured as a boolean, even
though there is module initialization code in drivers/acpi, that seems
to work just fine, at least for my purposes of deactivating the
power after a shutdown. Does anybody know if there some known problem
with acpi.o as a module?

I have attached my kernel patch below. If this meets with
no obections, can somebody bless this and "send" it to Linus for
integration?

On Tue, Dec 19, 2000 at 06:00:15PM -0800, Grover, Andrew wrote:
> I'm thinking arch/i386/kernel/acpi.c should just go away, yes?
>
> Its purpose is probably better served by an ifdef, like you mentioned.
[...]
> > From: Adam J. Richter [mailto:adam@yggdrasil.com]
> >
> > Although the stock linux-2.4.0-test13pre3 does not allow
> > one to build the acpi interpreter as a loadable module, I had
> > tweaked the Makefiles in previous kernels to do this (the supporting
> > code is there and it seemed to work, at least for shutting off the
> > power after a shutdown). Unfortunately, in 2.4.0-test13pre3, this
> > is no harder to do, because there is a circular dependency:
> >
> > drivers/acpi/ references acpi_get_rsdp_ptr in arch/i386/kernel/acpi.c,
> > and
> > arch/i386/kernel/acpi.c references acp_find_root_pointer in
> > drivers/acpi/.
> >
> >
> > I would like to recommend that the contents of
> > arch/i{386,a64}/kernel/acpi.c be merged back somewhere in
> > drivers/acpi/,
> > and just selected with Makefile options, ifdefs, or perhaps runtime
> > options (if the ia64 code is potentionally useable to an i386 kernel
> > that find itself running on an ia64 CPU, which will probably
> > be the case
> > with most Linux distributions initially installed on ia64 hardware).
> >
> > If need be, I would be willing to at least write a quick and
> > dirty #ifdef-based version of this proposed change.

--
Adam J. Richter __ ______________ 4880 Stevens Creek Blvd, Suite 104
adam@yggdrasil.com \ / San Jose, California 95129-1034
+1 408 261-6630 | g g d r a s i l United States of America
fax +1 408 261-6631 "Free Software For The Rest Of Us."
diff --new-file -r -u linux-2.4.0-test13-pre3/drivers/acpi/Makefile linux/drivers/acpi/Makefile
--- linux-2.4.0-test13-pre3/drivers/acpi/Makefile Wed Dec 20 00:49:37 2000
+++ linux/drivers/acpi/Makefile Wed Dec 20 00:03:27 2000
@@ -3,6 +3,7 @@
#

O_TARGET := acpi.o
+obj-m := $(O_TARGET)

export-objs := ksyms.o

@@ -25,13 +26,23 @@

subdir-$(CONFIG_ACPI) += $(acpi-subdirs)

-obj-$(CONFIG_ACPI) := $(patsubst %,%.o,$(acpi-subdirs))
-obj-$(CONFIG_ACPI) += os.o ksyms.o
+obj-y := $(patsubst %,%.o,$(acpi-subdirs))
+obj-y += os.o ksyms.o
+
+$(patsubst %,%.o,$(acpi-subdirs)):
+ $(MAKE) $(MFLAGS) -C $$(basename $@ .o) ../$@

ifdef CONFIG_ACPI_KERNEL_CONFIG
- obj-$(CONFIG_ACPI) += acpiconf.o osconf.o
+ obj-y += acpiconf.o osconf.o
else
- obj-$(CONFIG_ACPI) += driver.o cmbatt.o cpu.o ec.o ksyms.o sys.o table.o
+ obj-y += driver.o cmbatt.o cpu.o ec.o ksyms.o sys.o table.o
+endif
+
+ifdef CONFIG_X86
+ obj-y += rsdp_x86.o
+endif
+ifdef CONFIG_IA64
+ obj-y += rsdp_ia64.o
endif

include $(TOPDIR)/Rules.make
diff --new-file -r -u linux-2.4.0-test13-pre3/drivers/acpi/common/Makefile linux/drivers/acpi/common/Makefile
--- linux-2.4.0-test13-pre3/drivers/acpi/common/Makefile Wed Dec 20 00:49:37 2000
+++ linux/drivers/acpi/common/Makefile Tue Dec 19 08:58:42 2000
@@ -4,7 +4,7 @@

O_TARGET := ../$(shell basename `pwd`).o

-obj-$(CONFIG_ACPI) := $(patsubst %.c,%.o,$(wildcard *.c))
+obj-y := $(patsubst %.c,%.o,$(wildcard *.c))

EXTRA_CFLAGS += -I../include

diff --new-file -r -u linux-2.4.0-test13-pre3/drivers/acpi/dispatcher/Makefile linux/drivers/acpi/dispatcher/Makefile
--- linux-2.4.0-test13-pre3/drivers/acpi/dispatcher/Makefile Wed Dec 20 00:49:37 2000
+++ linux/drivers/acpi/dispatcher/Makefile Tue Dec 19 08:58:42 2000
@@ -4,7 +4,7 @@

O_TARGET := ../$(shell basename `pwd`).o

-obj-$(CONFIG_ACPI) := $(patsubst %.c,%.o,$(wildcard *.c))
+obj-y := $(patsubst %.c,%.o,$(wildcard *.c))

EXTRA_CFLAGS += -I../include

diff --new-file -r -u linux-2.4.0-test13-pre3/drivers/acpi/events/Makefile linux/drivers/acpi/events/Makefile
--- linux-2.4.0-test13-pre3/drivers/acpi/events/Makefile Wed Dec 20 00:49:37 2000
+++ linux/drivers/acpi/events/Makefile Tue Dec 19 08:58:42 2000
@@ -4,7 +4,7 @@

O_TARGET := ../$(shell basename `pwd`).o

-obj-$(CONFIG_ACPI) := $(patsubst %.c,%.o,$(wildcard *.c))
+obj-y := $(patsubst %.c,%.o,$(wildcard *.c))

EXTRA_CFLAGS += -I../include

diff --new-file -r -u linux-2.4.0-test13-pre3/drivers/acpi/hardware/Makefile linux/drivers/acpi/hardware/Makefile
--- linux-2.4.0-test13-pre3/drivers/acpi/hardware/Makefile Wed Dec 20 00:49:37 2000
+++ linux/drivers/acpi/hardware/Makefile Tue Dec 19 08:58:42 2000
@@ -4,7 +4,7 @@

O_TARGET := ../$(shell basename `pwd`).o

-obj-$(CONFIG_ACPI) := $(patsubst %.c,%.o,$(wildcard *.c))
+obj-y := $(patsubst %.c,%.o,$(wildcard *.c))

EXTRA_CFLAGS += -I../include

diff --new-file -r -u linux-2.4.0-test13-pre3/drivers/acpi/interpreter/Makefile linux/drivers/acpi/interpreter/Makefile
--- linux-2.4.0-test13-pre3/drivers/acpi/interpreter/Makefile Wed Dec 20 00:49:37 2000
+++ linux/drivers/acpi/interpreter/Makefile Tue Dec 19 08:58:42 2000
@@ -4,7 +4,7 @@

O_TARGET := ../$(shell basename `pwd`).o

-obj-$(CONFIG_ACPI) := $(patsubst %.c,%.o,$(wildcard *.c))
+obj-y := $(patsubst %.c,%.o,$(wildcard *.c))

EXTRA_CFLAGS += -I../include

diff --new-file -r -u linux-2.4.0-test13-pre3/drivers/acpi/ksyms.c linux/drivers/acpi/ksyms.c
--- linux-2.4.0-test13-pre3/drivers/acpi/ksyms.c Wed Dec 20 00:49:37 2000
+++ linux/drivers/acpi/ksyms.c Tue Dec 19 09:58:21 2000
@@ -90,3 +90,5 @@
EXPORT_SYMBOL(acpi_get_processor_cx_info);
EXPORT_SYMBOL(acpi_set_processor_sleep_state);
EXPORT_SYMBOL(acpi_processor_sleep);
+
+EXPORT_SYMBOL(acpi_find_root_pointer);
diff --new-file -r -u linux-2.4.0-test13-pre3/drivers/acpi/namespace/Makefile linux/drivers/acpi/namespace/Makefile
--- linux-2.4.0-test13-pre3/drivers/acpi/namespace/Makefile Wed Dec 20 00:49:37 2000
+++ linux/drivers/acpi/namespace/Makefile Tue Dec 19 08:58:42 2000
@@ -4,7 +4,7 @@

O_TARGET := ../$(shell basename `pwd`).o

-obj-$(CONFIG_ACPI) := $(patsubst %.c,%.o,$(wildcard *.c))
+obj-y := $(patsubst %.c,%.o,$(wildcard *.c))

EXTRA_CFLAGS += -I../include

diff --new-file -r -u linux-2.4.0-test13-pre3/drivers/acpi/parser/Makefile linux/drivers/acpi/parser/Makefile
--- linux-2.4.0-test13-pre3/drivers/acpi/parser/Makefile Wed Dec 20 00:49:37 2000
+++ linux/drivers/acpi/parser/Makefile Tue Dec 19 08:58:43 2000
@@ -4,7 +4,7 @@

O_TARGET := ../$(shell basename `pwd`).o

-obj-$(CONFIG_ACPI) := $(patsubst %.c,%.o,$(wildcard *.c))
+obj-y := $(patsubst %.c,%.o,$(wildcard *.c))

EXTRA_CFLAGS += -I../include

diff --new-file -r -u linux-2.4.0-test13-pre3/drivers/acpi/resources/Makefile linux/drivers/acpi/resources/Makefile
--- linux-2.4.0-test13-pre3/drivers/acpi/resources/Makefile Wed Dec 20 00:49:37 2000
+++ linux/drivers/acpi/resources/Makefile Tue Dec 19 08:58:43 2000
@@ -4,7 +4,7 @@

O_TARGET := ../$(shell basename `pwd`).o

-obj-$(CONFIG_ACPI) := $(patsubst %.c,%.o,$(wildcard *.c))
+obj-y := $(patsubst %.c,%.o,$(wildcard *.c))

EXTRA_CFLAGS += -I../include

diff --new-file -r -u linux-2.4.0-test13-pre3/drivers/acpi/rsdp_ia64.c linux/drivers/acpi/rsdp_ia64.c
--- linux-2.4.0-test13-pre3/drivers/acpi/rsdp_ia64.c Wed Dec 31 16:00:00 1969
+++ linux/drivers/acpi/rsdp_ia64.c Wed Dec 20 00:03:28 2000
@@ -0,0 +1,289 @@
+/*
+ * Advanced Configuration and Power Interface
+ *
+ * Based on 'ACPI Specification 1.0b' February 2, 1999 and
+ * 'IA-64 Extensions to ACPI Specification' Revision 0.6
+ *
+ * Copyright (C) 1999 VA Linux Systems
+ * Copyright (C) 1999,2000 Walt Drummond <drummond@valinux.com>
+ */
+
+#include <linux/config.h>
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/irq.h>
+
+#include <asm/acpi-ext.h>
+#include <asm/efi.h>
+#include <asm/io.h>
+#include <asm/iosapic.h>
+#include <asm/machvec.h>
+#include <asm/page.h>
+#ifdef CONFIG_ACPI_KERNEL_CONFIG
+# include <asm/acpikcfg.h>
+#endif
+
+#undef ACPI_DEBUG /* Guess what this does? */
+
+/* These are ugly but will be reclaimed by the kernel */
+int __initdata available_cpus;
+int __initdata total_cpus;
+
+void (*pm_idle)(void);
+
+/*
+ * Identify usable CPU's and remember them for SMP bringup later.
+ */
+static void __init
+acpi_lsapic(char *p)
+{
+ int add = 1;
+
+ acpi_entry_lsapic_t *lsapic = (acpi_entry_lsapic_t *) p;
+
+ if ((lsapic->flags & LSAPIC_PRESENT) == 0)
+ return;
+
+ printk(" CPU %d (%.04x:%.04x): ", total_cpus, lsapic->eid, lsapic->id);
+
+ if ((lsapic->flags & LSAPIC_ENABLED) == 0) {
+ printk("Disabled.\n");
+ add = 0;
+ } else if (lsapic->flags & LSAPIC_PERFORMANCE_RESTRICTED) {
+ printk("Performance Restricted; ignoring.\n");
+ add = 0;
+ }
+
+#ifdef CONFIG_SMP
+ smp_boot_data.cpu_phys_id[total_cpus] = -1;
+#endif
+ if (add) {
+ printk("Available.\n");
+ available_cpus++;
+#ifdef CONFIG_SMP
+ smp_boot_data.cpu_phys_id[total_cpus] = (lsapic->id << 8) | lsapic->eid;
+#endif /* CONFIG_SMP */
+ }
+ total_cpus++;
+}
+
+/*
+ * Configure legacy IRQ information in iosapic_vector
+ */
+static void __init
+acpi_legacy_irq(char *p)
+{
+ /*
+ * This is not good. ACPI is not necessarily limited to CONFIG_IA64_DIG, yet
+ * ACPI does not necessarily imply IOSAPIC either. Perhaps there should be
+ * a means for platform_setup() to register ACPI handlers?
+ */
+#ifdef CONFIG_IA64_IRQ_ACPI
+ acpi_entry_int_override_t *legacy = (acpi_entry_int_override_t *) p;
+ unsigned char vector;
+ int i;
+
+ vector = isa_irq_to_vector(legacy->isa_irq);
+
+ /*
+ * Clobber any old pin mapping. It may be that it gets replaced later on
+ */
+ for (i = 0; i < IA64_MAX_VECTORED_IRQ; i++) {
+ if (i == vector)
+ continue;
+ if (iosapic_pin(i) == iosapic_pin(vector))
+ iosapic_pin(i) = 0xff;
+ }
+
+ iosapic_pin(vector) = legacy->pin;
+ iosapic_bus(vector) = BUS_ISA; /* This table only overrides the ISA devices */
+ iosapic_busdata(vector) = 0;
+
+ /*
+ * External timer tick is special...
+ */
+ if (vector != TIMER_IRQ)
+ iosapic_dmode(vector) = IO_SAPIC_LOWEST_PRIORITY;
+ else
+ iosapic_dmode(vector) = IO_SAPIC_FIXED;
+
+ /* See MPS 1.4 section 4.3.4 */
+ switch (legacy->flags) {
+ case 0x5:
+ iosapic_polarity(vector) = IO_SAPIC_POL_HIGH;
+ iosapic_trigger(vector) = IO_SAPIC_EDGE;
+ break;
+ case 0x8:
+ iosapic_polarity(vector) = IO_SAPIC_POL_LOW;
+ iosapic_trigger(vector) = IO_SAPIC_EDGE;
+ break;
+ case 0xd:
+ iosapic_polarity(vector) = IO_SAPIC_POL_HIGH;
+ iosapic_trigger(vector) = IO_SAPIC_LEVEL;
+ break;
+ case 0xf:
+ iosapic_polarity(vector) = IO_SAPIC_POL_LOW;
+ iosapic_trigger(vector) = IO_SAPIC_LEVEL;
+ break;
+ default:
+ printk(" ACPI Legacy IRQ 0x%02x: Unknown flags 0x%x\n", legacy->isa_irq,
+ legacy->flags);
+ break;
+ }
+
+# ifdef ACPI_DEBUG
+ printk("Legacy ISA IRQ %x -> IA64 Vector %x IOSAPIC Pin %x Active %s %s Trigger\n",
+ legacy->isa_irq, vector, iosapic_pin(vector),
+ ((iosapic_polarity(vector) == IO_SAPIC_POL_LOW) ? "Low" : "High"),
+ ((iosapic_trigger(vector) == IO_SAPIC_LEVEL) ? "Level" : "Edge"));
+# endif /* ACPI_DEBUG */
+#endif /* CONFIG_IA64_IRQ_ACPI */
+}
+
+/*
+ * Info on platform interrupt sources: NMI. PMI, INIT, etc.
+ */
+static void __init
+acpi_platform(char *p)
+{
+ acpi_entry_platform_src_t *plat = (acpi_entry_platform_src_t *) p;
+
+ printk("PLATFORM: IOSAPIC %x -> Vector %lx on CPU %.04u:%.04u\n",
+ plat->iosapic_vector, plat->global_vector, plat->eid, plat->id);
+}
+
+/*
+ * Parse the ACPI Multiple SAPIC Table
+ */
+static void __init
+acpi_parse_msapic(acpi_sapic_t *msapic)
+{
+ char *p, *end;
+
+ /* Base address of IPI Message Block */
+ ipi_base_addr = (unsigned long) ioremap(msapic->interrupt_block, 0);
+
+ p = (char *) (msapic + 1);
+ end = p + (msapic->header.length - sizeof(acpi_sapic_t));
+
+ while (p < end) {
+
+ switch (*p) {
+ case ACPI_ENTRY_LOCAL_SAPIC:
+ acpi_lsapic(p);
+ break;
+
+ case ACPI_ENTRY_IO_SAPIC:
+ platform_register_iosapic((acpi_entry_iosapic_t *) p);
+ break;
+
+ case ACPI_ENTRY_INT_SRC_OVERRIDE:
+ acpi_legacy_irq(p);
+ break;
+
+ case ACPI_ENTRY_PLATFORM_INT_SOURCE:
+ acpi_platform(p);
+ break;
+
+ default:
+ break;
+ }
+
+ /* Move to next table entry. */
+#define BAD_ACPI_TABLE
+#ifdef BAD_ACPI_TABLE
+ /*
+ * Some prototype Lion's have a bad ACPI table
+ * requiring this fix. Without this fix, those
+ * machines crash during bootup.
+ */
+ if (p[1] == 0)
+ p = end;
+ else
+#endif
+ p += p[1];
+ }
+
+ /* Make bootup pretty */
+ printk(" %d CPUs available, %d CPUs total\n", available_cpus, total_cpus);
+}
+
+int __init
+acpi_parse(acpi_rsdp_t *rsdp)
+{
+ acpi_rsdt_t *rsdt;
+ acpi_desc_table_hdr_t *hdrp;
+ long tables, i;
+
+ if (!rsdp) {
+ printk("Uh-oh, no ACPI Root System Description Pointer table!\n");
+ return 0;
+ }
+
+ if (strncmp(rsdp->signature, ACPI_RSDP_SIG, ACPI_RSDP_SIG_LEN)) {
+ printk("Uh-oh, ACPI RSDP signature incorrect!\n");
+ return 0;
+ }
+
+ rsdp->rsdt = __va(rsdp->rsdt);
+ rsdt = rsdp->rsdt;
+ if (strncmp(rsdt->header.signature, ACPI_RSDT_SIG, ACPI_RSDT_SIG_LEN)) {
+ printk("Uh-oh, ACPI RDST signature incorrect!\n");
+ return 0;
+ }
+
+ printk("ACPI: %.6s %.8s %d.%d\n", rsdt->header.oem_id, rsdt->header.oem_table_id,
+ rsdt->header.oem_revision >> 16, rsdt->header.oem_revision & 0xffff);
+
+#ifdef CONFIG_ACPI_KERNEL_CONFIG
+ acpi_cf_init(rsdp);
+#endif
+
+ tables = (rsdt->header.length - sizeof(acpi_desc_table_hdr_t)) / 8;
+ for (i = 0; i < tables; i++) {
+ hdrp = (acpi_desc_table_hdr_t *) __va(rsdt->entry_ptrs[i]);
+
+ /* Only interested int the MSAPIC table for now ... */
+ if (strncmp(hdrp->signature, ACPI_SAPIC_SIG, ACPI_SAPIC_SIG_LEN) != 0)
+ continue;
+
+ acpi_parse_msapic((acpi_sapic_t *) hdrp);
+ }
+
+#ifdef CONFIG_ACPI_KERNEL_CONFIG
+ acpi_cf_terminate();
+#endif
+
+#ifdef CONFIG_SMP
+ if (available_cpus == 0) {
+ printk("ACPI: Found 0 CPUS; assuming 1\n");
+ available_cpus = 1; /* We've got at least one of these, no? */
+ }
+ smp_boot_data.cpu_count = available_cpus;
+#endif
+ return 1;
+}
+
+const char *
+acpi_get_sysname (void)
+{
+ /* the following should go away once we have an ACPI parser: */
+#ifdef CONFIG_IA64_GENERIC
+ return "hpsim";
+#else
+# if defined (CONFIG_IA64_HP_SIM)
+ return "hpsim";
+# elif defined (CONFIG_IA64_SGI_SN1)
+ return "sn1";
+# elif defined (CONFIG_IA64_DIG)
+ return "dig";
+# else
+# error Unknown platform. Fix acpi.c.
+# endif
+#endif
+}
diff --new-file -r -u linux-2.4.0-test13-pre3/drivers/acpi/rsdp_x86.c linux/drivers/acpi/rsdp_x86.c
--- linux-2.4.0-test13-pre3/drivers/acpi/rsdp_x86.c Wed Dec 31 16:00:00 1969
+++ linux/drivers/acpi/rsdp_x86.c Wed Dec 20 00:03:28 2000
@@ -0,0 +1,53 @@
+/*
+ * acpi.c - Linux ACPI arch-specific functions
+ *
+ * Copyright (C) 1999-2000 Andrew Henroid
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/*
+ * Changes:
+ * Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 2000/08/31
+ * - check copy*user return
+ * - get rid of check_region
+ * - get rid of verify_area
+ * Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 2000/09/28
+ * - do proper release on failure in acpi_claim_ioports and acpi_init
+ * Andrew Grover <andrew.grover@intel.com> - 2000/11/13
+ * - Took out support for user-level interpreter. ACPI 2.0 changes preclude
+ * its maintenance.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/pm.h>
+
+#define _LINUX
+#include <linux/acpi.h>
+/* Is there a better way to include this? */
+#include <../drivers/acpi/include/acpi.h>
+
+ACPI_PHYSICAL_ADDRESS
+acpi_get_rsdp_ptr()
+{
+ ACPI_PHYSICAL_ADDRESS rsdp_phys;
+
+ if(ACPI_SUCCESS(acpi_find_root_pointer(&rsdp_phys)))
+ return rsdp_phys;
+ else
+ return 0;
+}
diff --new-file -r -u linux-2.4.0-test13-pre3/drivers/acpi/tables/Makefile linux/drivers/acpi/tables/Makefile
--- linux-2.4.0-test13-pre3/drivers/acpi/tables/Makefile Wed Dec 20 00:49:37 2000
+++ linux/drivers/acpi/tables/Makefile Tue Dec 19 08:58:43 2000
@@ -4,7 +4,7 @@

O_TARGET := ../$(shell basename `pwd`).o

-obj-$(CONFIG_ACPI) := $(patsubst %.c,%.o,$(wildcard *.c))
+obj-y := $(patsubst %.c,%.o,$(wildcard *.c))

EXTRA_CFLAGS += -I../include

--- linux-2.4.0-test13-pre3/arch/i386/kernel/Makefile Wed Dec 20 00:49:36 2000
+++ linux/arch/i386/kernel/Makefile Wed Dec 20 00:03:27 2000
@@ -40,6 +40,5 @@
obj-$(CONFIG_X86_LOCAL_APIC) += apic.o
obj-$(CONFIG_X86_IO_APIC) += io_apic.o mpparse.o
obj-$(CONFIG_X86_VISWS_APIC) += visws_apic.o
-obj-$(CONFIG_ACPI) += acpi.o

include $(TOPDIR)/Rules.make
--- linux-2.4.0-test13-pre3/arch/ia64/kernel/Makefile Mon Oct 9 17:54:53 2000
+++ linux/arch/ia64/kernel/Makefile Wed Dec 20 00:52:33 2000
@@ -9,7 +9,7 @@

all: kernel.o head.o init_task.o

-obj-y := acpi.o entry.o gate.o efi.o efi_stub.o irq.o irq_ia64.o irq_sapic.o ivt.o \
+obj-y := entry.o gate.o efi.o efi_stub.o irq.o irq_ia64.o irq_sapic.o ivt.o \
machvec.o pal.o pci-dma.o process.o perfmon.o ptrace.o sal.o semaphore.o setup.o \
signal.o sys_ia64.o traps.o time.o unaligned.o unwind.o

--- linux-2.4.0-test13-pre3/arch/i386/kernel/acpi.c Wed Dec 20 00:49:36 2000
+++ /dev/null Wed Dec 31 16:00:00 1969
@@ -1,53 +0,0 @@
-/*
- * acpi.c - Linux ACPI arch-specific functions
- *
- * Copyright (C) 1999-2000 Andrew Henroid
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/*
- * Changes:
- * Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 2000/08/31
- * - check copy*user return
- * - get rid of check_region
- * - get rid of verify_area
- * Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 2000/09/28
- * - do proper release on failure in acpi_claim_ioports and acpi_init
- * Andrew Grover <andrew.grover@intel.com> - 2000/11/13
- * - Took out support for user-level interpreter. ACPI 2.0 changes preclude
- * its maintenance.
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/pm.h>
-
-#define _LINUX
-#include <linux/acpi.h>
-/* Is there a better way to include this? */
-#include <../drivers/acpi/include/acpi.h>
-
-ACPI_PHYSICAL_ADDRESS
-acpi_get_rsdp_ptr()
-{
- ACPI_PHYSICAL_ADDRESS rsdp_phys;
-
- if(ACPI_SUCCESS(acpi_find_root_pointer(&rsdp_phys)))
- return rsdp_phys;
- else
- return 0;
-}
--- linux-2.4.0-test13-pre3/arch/ia64/kernel/acpi.c Mon Oct 9 17:54:53 2000
+++ /dev/null Wed Dec 31 16:00:00 1969
@@ -1,289 +0,0 @@
-/*
- * Advanced Configuration and Power Interface
- *
- * Based on 'ACPI Specification 1.0b' February 2, 1999 and
- * 'IA-64 Extensions to ACPI Specification' Revision 0.6
- *
- * Copyright (C) 1999 VA Linux Systems
- * Copyright (C) 1999,2000 Walt Drummond <drummond@valinux.com>
- */
-
-#include <linux/config.h>
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/irq.h>
-
-#include <asm/acpi-ext.h>
-#include <asm/efi.h>
-#include <asm/io.h>
-#include <asm/iosapic.h>
-#include <asm/machvec.h>
-#include <asm/page.h>
-#ifdef CONFIG_ACPI_KERNEL_CONFIG
-# include <asm/acpikcfg.h>
-#endif
-
-#undef ACPI_DEBUG /* Guess what this does? */
-
-/* These are ugly but will be reclaimed by the kernel */
-int __initdata available_cpus;
-int __initdata total_cpus;
-
-void (*pm_idle)(void);
-
-/*
- * Identify usable CPU's and remember them for SMP bringup later.
- */
-static void __init
-acpi_lsapic(char *p)
-{
- int add = 1;
-
- acpi_entry_lsapic_t *lsapic = (acpi_entry_lsapic_t *) p;
-
- if ((lsapic->flags & LSAPIC_PRESENT) == 0)
- return;
-
- printk(" CPU %d (%.04x:%.04x): ", total_cpus, lsapic->eid, lsapic->id);
-
- if ((lsapic->flags & LSAPIC_ENABLED) == 0) {
- printk("Disabled.\n");
- add = 0;
- } else if (lsapic->flags & LSAPIC_PERFORMANCE_RESTRICTED) {
- printk("Performance Restricted; ignoring.\n");
- add = 0;
- }
-
-#ifdef CONFIG_SMP
- smp_boot_data.cpu_phys_id[total_cpus] = -1;
-#endif
- if (add) {
- printk("Available.\n");
- available_cpus++;
-#ifdef CONFIG_SMP
- smp_boot_data.cpu_phys_id[total_cpus] = (lsapic->id << 8) | lsapic->eid;
-#endif /* CONFIG_SMP */
- }
- total_cpus++;
-}
-
-/*
- * Configure legacy IRQ information in iosapic_vector
- */
-static void __init
-acpi_legacy_irq(char *p)
-{
- /*
- * This is not good. ACPI is not necessarily limited to CONFIG_IA64_DIG, yet
- * ACPI does not necessarily imply IOSAPIC either. Perhaps there should be
- * a means for platform_setup() to register ACPI handlers?
- */
-#ifdef CONFIG_IA64_IRQ_ACPI
- acpi_entry_int_override_t *legacy = (acpi_entry_int_override_t *) p;
- unsigned char vector;
- int i;
-
- vector = isa_irq_to_vector(legacy->isa_irq);
-
- /*
- * Clobber any old pin mapping. It may be that it gets replaced later on
- */
- for (i = 0; i < IA64_MAX_VECTORED_IRQ; i++) {
- if (i == vector)
- continue;
- if (iosapic_pin(i) == iosapic_pin(vector))
- iosapic_pin(i) = 0xff;
- }
-
- iosapic_pin(vector) = legacy->pin;
- iosapic_bus(vector) = BUS_ISA; /* This table only overrides the ISA devices */
- iosapic_busdata(vector) = 0;
-
- /*
- * External timer tick is special...
- */
- if (vector != TIMER_IRQ)
- iosapic_dmode(vector) = IO_SAPIC_LOWEST_PRIORITY;
- else
- iosapic_dmode(vector) = IO_SAPIC_FIXED;
-
- /* See MPS 1.4 section 4.3.4 */
- switch (legacy->flags) {
- case 0x5:
- iosapic_polarity(vector) = IO_SAPIC_POL_HIGH;
- iosapic_trigger(vector) = IO_SAPIC_EDGE;
- break;
- case 0x8:
- iosapic_polarity(vector) = IO_SAPIC_POL_LOW;
- iosapic_trigger(vector) = IO_SAPIC_EDGE;
- break;
- case 0xd:
- iosapic_polarity(vector) = IO_SAPIC_POL_HIGH;
- iosapic_trigger(vector) = IO_SAPIC_LEVEL;
- break;
- case 0xf:
- iosapic_polarity(vector) = IO_SAPIC_POL_LOW;
- iosapic_trigger(vector) = IO_SAPIC_LEVEL;
- break;
- default:
- printk(" ACPI Legacy IRQ 0x%02x: Unknown flags 0x%x\n", legacy->isa_irq,
- legacy->flags);
- break;
- }
-
-# ifdef ACPI_DEBUG
- printk("Legacy ISA IRQ %x -> IA64 Vector %x IOSAPIC Pin %x Active %s %s Trigger\n",
- legacy->isa_irq, vector, iosapic_pin(vector),
- ((iosapic_polarity(vector) == IO_SAPIC_POL_LOW) ? "Low" : "High"),
- ((iosapic_trigger(vector) == IO_SAPIC_LEVEL) ? "Level" : "Edge"));
-# endif /* ACPI_DEBUG */
-#endif /* CONFIG_IA64_IRQ_ACPI */
-}
-
-/*
- * Info on platform interrupt sources: NMI. PMI, INIT, etc.
- */
-static void __init
-acpi_platform(char *p)
-{
- acpi_entry_platform_src_t *plat = (acpi_entry_platform_src_t *) p;
-
- printk("PLATFORM: IOSAPIC %x -> Vector %lx on CPU %.04u:%.04u\n",
- plat->iosapic_vector, plat->global_vector, plat->eid, plat->id);
-}
-
-/*
- * Parse the ACPI Multiple SAPIC Table
- */
-static void __init
-acpi_parse_msapic(acpi_sapic_t *msapic)
-{
- char *p, *end;
-
- /* Base address of IPI Message Block */
- ipi_base_addr = (unsigned long) ioremap(msapic->interrupt_block, 0);
-
- p = (char *) (msapic + 1);
- end = p + (msapic->header.length - sizeof(acpi_sapic_t));
-
- while (p < end) {
-
- switch (*p) {
- case ACPI_ENTRY_LOCAL_SAPIC:
- acpi_lsapic(p);
- break;
-
- case ACPI_ENTRY_IO_SAPIC:
- platform_register_iosapic((acpi_entry_iosapic_t *) p);
- break;
-
- case ACPI_ENTRY_INT_SRC_OVERRIDE:
- acpi_legacy_irq(p);
- break;
-
- case ACPI_ENTRY_PLATFORM_INT_SOURCE:
- acpi_platform(p);
- break;
-
- default:
- break;
- }
-
- /* Move to next table entry. */
-#define BAD_ACPI_TABLE
-#ifdef BAD_ACPI_TABLE
- /*
- * Some prototype Lion's have a bad ACPI table
- * requiring this fix. Without this fix, those
- * machines crash during bootup.
- */
- if (p[1] == 0)
- p = end;
- else
-#endif
- p += p[1];
- }
-
- /* Make bootup pretty */
- printk(" %d CPUs available, %d CPUs total\n", available_cpus, total_cpus);
-}
-
-int __init
-acpi_parse(acpi_rsdp_t *rsdp)
-{
- acpi_rsdt_t *rsdt;
- acpi_desc_table_hdr_t *hdrp;
- long tables, i;
-
- if (!rsdp) {
- printk("Uh-oh, no ACPI Root System Description Pointer table!\n");
- return 0;
- }
-
- if (strncmp(rsdp->signature, ACPI_RSDP_SIG, ACPI_RSDP_SIG_LEN)) {
- printk("Uh-oh, ACPI RSDP signature incorrect!\n");
- return 0;
- }
-
- rsdp->rsdt = __va(rsdp->rsdt);
- rsdt = rsdp->rsdt;
- if (strncmp(rsdt->header.signature, ACPI_RSDT_SIG, ACPI_RSDT_SIG_LEN)) {
- printk("Uh-oh, ACPI RDST signature incorrect!\n");
- return 0;
- }
-
- printk("ACPI: %.6s %.8s %d.%d\n", rsdt->header.oem_id, rsdt->header.oem_table_id,
- rsdt->header.oem_revision >> 16, rsdt->header.oem_revision & 0xffff);
-
-#ifdef CONFIG_ACPI_KERNEL_CONFIG
- acpi_cf_init(rsdp);
-#endif
-
- tables = (rsdt->header.length - sizeof(acpi_desc_table_hdr_t)) / 8;
- for (i = 0; i < tables; i++) {
- hdrp = (acpi_desc_table_hdr_t *) __va(rsdt->entry_ptrs[i]);
-
- /* Only interested int the MSAPIC table for now ... */
- if (strncmp(hdrp->signature, ACPI_SAPIC_SIG, ACPI_SAPIC_SIG_LEN) != 0)
- continue;
-
- acpi_parse_msapic((acpi_sapic_t *) hdrp);
- }
-
-#ifdef CONFIG_ACPI_KERNEL_CONFIG
- acpi_cf_terminate();
-#endif
-
-#ifdef CONFIG_SMP
- if (available_cpus == 0) {
- printk("ACPI: Found 0 CPUS; assuming 1\n");
- available_cpus = 1; /* We've got at least one of these, no? */
- }
- smp_boot_data.cpu_count = available_cpus;
-#endif
- return 1;
-}
-
-const char *
-acpi_get_sysname (void)
-{
- /* the following should go away once we have an ACPI parser: */
-#ifdef CONFIG_IA64_GENERIC
- return "hpsim";
-#else
-# if defined (CONFIG_IA64_HP_SIM)
- return "hpsim";
-# elif defined (CONFIG_IA64_SGI_SN1)
- return "sn1";
-# elif defined (CONFIG_IA64_DIG)
- return "dig";
-# else
-# error Unknown platform. Fix acpi.c.
-# endif
-#endif
-}
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