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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] Dynamically generate the local apic entries in ACPI MADT table.
# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID 739154e26fb752caf6496620644e01318b64540a
# Parent d1cbfaf804d98aec913ad57e3531d45c6459b366
Dynamically generate the local apic entries in ACPI MADT table.
The number of local apic entries is decided by the #vcpus passed
from the config file (eg./etc/xen/xmexample.vmx).
This feature is required by the SMP VMX domain.
Signed-off-by: Ke Yu <ke.yu@xxxxxxxxx>
Signed-off-by: Xin Li <xin.b.li@xxxxxxxxx>
Signed-off-by: Asit Mallick <asit.k.mallick@xxxxxxxxx>
diff -r d1cbfaf804d9 -r 739154e26fb7 tools/firmware/acpi/acpi_madt.c
--- a/tools/firmware/acpi/acpi_madt.c Mon Sep 19 17:10:20 2005
+++ b/tools/firmware/acpi/acpi_madt.c Tue Sep 20 09:02:43 2005
@@ -37,44 +37,7 @@
ACPI_LOCAL_APIC_ADDRESS,
ACPI_MULTIPLE_APIC_FLAGS,
},
- //
- // LOCAL APIC Entries for 4 processors.
- //
- {
- {
- ACPI_PROCESSOR_LOCAL_APIC,
- sizeof
(ACPI_LOCAL_APIC_STRUCTURE),
- 0x00,
- 0x00,
- 0x00000001,
- },
-
- {
- ACPI_PROCESSOR_LOCAL_APIC,
- sizeof
(ACPI_LOCAL_APIC_STRUCTURE),
- 0x01,
- 0x00,
- 0x00000000
- },
-
- {
- ACPI_PROCESSOR_LOCAL_APIC,
- sizeof
(ACPI_LOCAL_APIC_STRUCTURE),
- 0x02,
- 0x00,
- 0x00000000
- },
-
- {
- ACPI_PROCESSOR_LOCAL_APIC,
- sizeof
(ACPI_LOCAL_APIC_STRUCTURE),
- 0x03,
- 0x00,
- 0x00000000
- }
- }
- ,
-
+
//
// IO APIC
//
@@ -87,5 +50,19 @@
ACPI_IO_APIC_ADDRESS_1,
0x0000
}
+ },
+
+ //
+ // LOCAL APIC Entries for up to 32 processors.
+ //
+ {
+ {
+ ACPI_PROCESSOR_LOCAL_APIC,
+ sizeof
(ACPI_LOCAL_APIC_STRUCTURE),
+ 0x00,
+ 0x00,
+ 0x00000001,
+ }
+
}
};
diff -r d1cbfaf804d9 -r 739154e26fb7 tools/firmware/acpi/acpi_madt.h
--- a/tools/firmware/acpi/acpi_madt.h Mon Sep 19 17:10:20 2005
+++ b/tools/firmware/acpi/acpi_madt.h Tue Sep 20 09:02:43 2005
@@ -35,9 +35,9 @@
//
#pragma pack (1)
typedef struct {
- ACPI_2_0_MADT Header;
- ACPI_LOCAL_APIC_STRUCTURE LocalApic[4];
- ACPI_IO_APIC_STRUCTURE IoApic[1];
+ ACPI_2_0_MADT Header;
+ ACPI_IO_APIC_STRUCTURE IoApic[1];
+ ACPI_LOCAL_APIC_STRUCTURE LocalApic[32];
} ACPI_MULTIPLE_APIC_DESCRIPTION_TABLE;
#pragma pack ()
diff -r d1cbfaf804d9 -r 739154e26fb7 tools/firmware/vmxassist/Makefile
--- a/tools/firmware/vmxassist/Makefile Mon Sep 19 17:10:20 2005
+++ b/tools/firmware/vmxassist/Makefile Tue Sep 20 09:02:43 2005
@@ -41,9 +41,9 @@
all: vmxloader
-vmxloader: roms.h vmxloader.c acpi.h
- ${CC} ${CFLAGS} ${DEFINES} -c vmxloader.c
- $(CC) -o vmxloader.tmp -m32 -nostdlib -Wl,-N -Wl,-Ttext -Wl,0x100000
vmxloader.o
+vmxloader: roms.h vmxloader.c acpi.h acpi_madt.c
+ ${CC} ${CFLAGS} ${DEFINES} -c vmxloader.c -c acpi_madt.c
+ $(CC) -o vmxloader.tmp -m32 -nostdlib -Wl,-N -Wl,-Ttext -Wl,0x100000
vmxloader.o acpi_madt.o
objcopy --change-addresses=0xC0000000 vmxloader.tmp vmxloader
rm -f vmxloader.tmp
diff -r d1cbfaf804d9 -r 739154e26fb7 tools/firmware/vmxassist/vmxloader.c
--- a/tools/firmware/vmxassist/vmxloader.c Mon Sep 19 17:10:20 2005
+++ b/tools/firmware/vmxassist/vmxloader.c Tue Sep 20 09:02:43 2005
@@ -27,6 +27,7 @@
#ifdef _ACPI_
#include "acpi.h"
#include "../acpi/acpi2_0.h" // for ACPI_PHYSICAL_ADDRESS
+int acpi_madt_update(unsigned char* acpi_start);
#endif
@@ -110,7 +111,10 @@
}
#ifdef _ACPI_
puts("Loading ACPI ...\n");
- if (ACPI_PHYSICAL_ADDRESS+sizeof(acpi) <= 0xF0000 ){
+
+ acpi_madt_update(acpi);
+
+ if (ACPI_PHYSICAL_ADDRESS+sizeof(acpi) <= 0xF0000) {
/* make sure acpi table does not overlap rombios
* currently acpi less than 8K will be OK.
*/
diff -r d1cbfaf804d9 -r 739154e26fb7 tools/libxc/xc_vmx_build.c
--- a/tools/libxc/xc_vmx_build.c Mon Sep 19 17:10:20 2005
+++ b/tools/libxc/xc_vmx_build.c Tue Sep 20 09:02:43 2005
@@ -105,6 +105,33 @@
nr_map++;
mem_mapp->nr_map = nr_map;
+}
+
+/*
+ * Use E820 reserved memory 0x9F800 to pass number of vcpus to vmxloader
+ * vmxloader will use it to config ACPI MADT table
+ */
+#define VCPU_MAGIC 0x76637075 /* "vcpu" */
+static int
+set_nr_vcpus(int xc_handle, u32 dom, unsigned long *pfn_list,
+ struct domain_setup_info *dsi, unsigned long vcpus)
+{
+ char *va_map;
+ unsigned long *va_vcpus;
+
+ va_map = xc_map_foreign_range(
+ xc_handle, dom, PAGE_SIZE, PROT_READ|PROT_WRITE,
+ pfn_list[(0x9F000 - dsi->v_start) >> PAGE_SHIFT]);
+ if ( va_map == NULL )
+ return -1;
+
+ va_vcpus = (unsigned long *)(va_map + 0x800);
+ *va_vcpus++ = VCPU_MAGIC;
+ *va_vcpus++ = vcpus;
+
+ munmap(va_map, PAGE_SIZE);
+
+ return 0;
}
#ifdef __i386__
@@ -496,7 +523,8 @@
MMU_MACHPHYS_UPDATE, count) )
goto error_out;
}
-
+
+ set_nr_vcpus(xc_handle, dom, page_array, &dsi, vcpus);
if ((boot_paramsp = xc_map_foreign_range(
xc_handle, dom, PAGE_SIZE, PROT_READ|PROT_WRITE,
diff -r d1cbfaf804d9 -r 739154e26fb7 tools/firmware/vmxassist/acpi_madt.c
--- /dev/null Mon Sep 19 17:10:20 2005
+++ b/tools/firmware/vmxassist/acpi_madt.c Tue Sep 20 09:02:43 2005
@@ -0,0 +1,145 @@
+/*
+ * acpi_madt.c: Update ACPI MADT table for multiple processor guest.
+ *
+ * Yu Ke, ke.yu@xxxxxxxxx
+ * Copyright (c) 2005, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ */
+#include "../acpi/acpi2_0.h"
+#include "../acpi/acpi_madt.h"
+
+#define NULL ((void*)0)
+
+extern int puts(const char *s);
+
+#define VCPU_MAGIC 0x76637075 /* "vcpu" */
+
+/* xc_vmx_builder wrote vcpu block at 0x9F800. Return it. */
+static int
+get_vcpus(void)
+{
+ unsigned long *vcpus;
+
+ vcpus = (unsigned long *)0x9F800;
+ if (vcpus[0] != VCPU_MAGIC) {
+ puts("Bad vcpus magic, set vcpu number=1\n");
+ return 1;
+ }
+
+ return vcpus[1];
+}
+
+static void *
+acpi_madt_get_madt(unsigned char *acpi_start)
+{
+ ACPI_2_0_RSDP *rsdp=NULL;
+ ACPI_2_0_RSDT *rsdt=NULL;
+ ACPI_MULTIPLE_APIC_DESCRIPTION_TABLE *madt;
+
+ rsdp = (ACPI_2_0_RSDP *)(acpi_start + sizeof(ACPI_2_0_FACS));
+ if (rsdp->Signature != ACPI_2_0_RSDP_SIGNATURE) {
+ puts("Bad RSDP signature\n");
+ return NULL;
+ }
+
+ rsdt= (ACPI_2_0_RSDT *)
+ (acpi_start + rsdp->RsdtAddress - ACPI_PHYSICAL_ADDRESS);
+ if (rsdt->Header.Signature != ACPI_2_0_RSDT_SIGNATURE) {
+ puts("Bad RSDT signature\n");
+ return NULL;
+ }
+
+ madt = (ACPI_MULTIPLE_APIC_DESCRIPTION_TABLE *)
+ ( acpi_start+ rsdt->Entry[1] - ACPI_PHYSICAL_ADDRESS);
+ if (madt->Header.Header.Signature !=
+ ACPI_MULTIPLE_APIC_DESCRIPTION_TABLE_SIGNATURE) {
+ puts("Bad MADT signature \n");
+ return NULL;
+ }
+
+ return madt;
+}
+
+static void
+set_checksum(void *start, int checksum_offset, int len)
+{
+ unsigned char sum = 0;
+ unsigned char *ptr;
+
+ ptr = start;
+ ptr[checksum_offset] = 0;
+ while (len--)
+ sum += *ptr++;
+
+ ptr = start;
+ ptr[checksum_offset] = -sum;
+}
+
+static int
+acpi_madt_set_local_apics(
+ int nr_vcpu,
+ ACPI_MULTIPLE_APIC_DESCRIPTION_TABLE *madt)
+{
+ int i;
+
+ if ((nr_vcpu > MAX_VIRT_CPUS) || (nr_vcpu < 0) || !madt)
+ return -1;
+
+ for (i = 0; i < nr_vcpu; i++) {
+ madt->LocalApic[i].Type = ACPI_PROCESSOR_LOCAL_APIC;
+ madt->LocalApic[i].Length = sizeof
(ACPI_LOCAL_APIC_STRUCTURE);
+ madt->LocalApic[i].AcpiProcessorId = i;
+ madt->LocalApic[i].ApicId = i;
+ madt->LocalApic[i].Flags = 1;
+ }
+
+ madt->Header.Header.Length =
+ sizeof(ACPI_MULTIPLE_APIC_DESCRIPTION_TABLE) -
+ (MAX_VIRT_CPUS - nr_vcpu)* sizeof(ACPI_LOCAL_APIC_STRUCTURE);
+
+ return 0;
+}
+
+#define FIELD_OFFSET(TYPE,Field) ((unsigned int)(&(((TYPE *) 0)->Field)))
+
+int acpi_madt_update(unsigned char *acpi_start)
+{
+ int rc;
+ ACPI_MULTIPLE_APIC_DESCRIPTION_TABLE *madt;
+
+ madt = acpi_madt_get_madt(acpi_start);
+ if (!madt)
+ return -1;
+
+ rc = acpi_madt_set_local_apics(get_vcpus(), madt);
+ if (rc != 0)
+ return rc;
+
+ set_checksum(
+ madt, FIELD_OFFSET(ACPI_TABLE_HEADER, Checksum),
+ madt->Header.Header.Length);
+
+ return 0;
+}
+
+/*
+ * Local variables:
+ * c-file-style: "linux"
+ * indent-tabs-mode: t
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * tab-width: 8
+ * End:
+ */
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