Date: Wed, 7 Jul 2010 20:07:33 +0000 (UTC) From: Marcel Moolenaar <marcel@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r209779 - in head/sys/ia64: acpica include Message-ID: <201007072007.o67K7Xj2091535@svn.freebsd.org>
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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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