Author: marcel
Date: Wed Jul 7 20:07:33 2010
New Revision: 209779
URL: http://svn.freebsd.org/changeset/base/209779
Log:
Add acpi_find_table() -- a convenience function for looking up an
ACPI table given the signature.
Modified:
head/sys/ia64/acpica/acpi_machdep.c
head/sys/ia64/include/md_var.h
Modified: head/sys/ia64/acpica/acpi_machdep.c
==============================================================================
--- head/sys/ia64/acpica/acpi_machdep.c Wed Jul 7 20:06:48 2010
(r209778)
+++ head/sys/ia64/acpica/acpi_machdep.c Wed Jul 7 20:07:33 2010
(r209779)
@@ -28,11 +28,12 @@
#include <sys/param.h>
#include <sys/bus.h>
+#include <machine/md_var.h>
+#include <machine/pal.h>
#include <contrib/dev/acpica/include/acpi.h>
-
+#include <contrib/dev/acpica/include/actables.h>
#include <dev/acpica/acpivar.h>
-#include <machine/pal.h>
int
acpi_machdep_init(device_t dev)
@@ -57,3 +58,37 @@ acpi_cpu_c1()
{
ia64_call_pal_static(PAL_HALT_LIGHT, 0, 0, 0);
}
+
+void *
+acpi_find_table(const char *sig)
+{
+ ACPI_PHYSICAL_ADDRESS rsdp_ptr;
+ ACPI_TABLE_RSDP *rsdp;
+ ACPI_TABLE_XSDT *xsdt;
+ ACPI_TABLE_HEADER *table;
+ UINT64 addr;
+ u_int i, count;
+
+ if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
+ return (NULL);
+
+ rsdp = (ACPI_TABLE_RSDP *)IA64_PHYS_TO_RR7(rsdp_ptr);
+ xsdt = (ACPI_TABLE_XSDT *)IA64_PHYS_TO_RR7(rsdp->XsdtPhysicalAddress);
+
+ count = (UINT64 *)((char *)xsdt + xsdt->Header.Length) -
+ xsdt->TableOffsetEntry;
+
+ for (i = 0; i < count; i++) {
+ addr = xsdt->TableOffsetEntry[i];
+ table = (ACPI_TABLE_HEADER *)IA64_PHYS_TO_RR7(addr);
+
+ if (strncmp(table->Signature, sig, ACPI_NAME_SIZE) != 0)
+ continue;
+ if (ACPI_FAILURE(AcpiTbChecksum((void *)table, table->Length)))
+ continue;
+
+ return (table);
+ }
+
+ return (NULL);
+}
Modified: head/sys/ia64/include/md_var.h
==============================================================================
--- head/sys/ia64/include/md_var.h Wed Jul 7 20:06:48 2010
(r209778)
+++ head/sys/ia64/include/md_var.h Wed Jul 7 20:07:33 2010
(r209779)
@@ -77,6 +77,7 @@ extern uint64_t ia64_lapic_addr;
extern long Maxmem;
extern u_int busdma_swi_pending;
+void *acpi_find_table(const char *sig);
void busdma_swi(void);
int copyout_regstack(struct thread *, uint64_t *, uint64_t *);
void cpu_mp_add(u_int, u_int, u_int);
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