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218387e6cf
ACPICA commit 7b23bdc37432f0b7fb6c3b6aa76debdcb7eb18c3 Before this change we see the following UBSAN stack trace in Fuchsia: #0 0x00002132da6299a1 in acpi_ut_validate_resource(struct acpi_walk_state*, void*, u8*) ../../third_party/acpica/source/components/utilities/utresrc.c:426 <platform-bus-x86.so>+0x2f79a1 #1.2 0x000023e6cd58577f in ubsan_get_stack_trace() compiler-rt/lib/ubsan/ubsan_diag.cpp:41 <libclang_rt.asan.so>+0x3d77f #1.1 0x000023e6cd58577f in maybe_print_stack_trace() compiler-rt/lib/ubsan/ubsan_diag.cpp:51 <libclang_rt.asan.so>+0x3d77f #1 0x000023e6cd58577f in ~scoped_report() compiler-rt/lib/ubsan/ubsan_diag.cpp:387 <libclang_rt.asan.so>+0x3d77f #2 0x000023e6cd586385 in handletype_mismatch_impl() compiler-rt/lib/ubsan/ubsan_handlers.cpp:137 <libclang_rt.asan.so>+0x3e385 #3 0x000023e6cd585ead in compiler-rt/lib/ubsan/ubsan_handlers.cpp:142 <libclang_rt.asan.so>+0x3dead #4 0x00002132da6299a1 in acpi_ut_validate_resource(struct acpi_walk_state*, void*, u8*) ../../third_party/acpica/source/components/utilities/utresrc.c:426 <platform-bus-x86.so>+0x2f79a1 #5 0x00002132da628ffe in acpi_ut_walk_aml_resources(struct acpi_walk_state*, u8*, acpi_size, acpi_walk_aml_callback, void**) ../../third_party/acpica/source/components/utilities/utresrc.c:216 <platform-bus-x86.so>+0x2f6ffe #6 0x00002132da5b2405 in acpi_ex_concat_template(union acpi_operand_object*, union acpi_operand_object*, union acpi_operand_object**, struct acpi_walk_state*) ../../third_party/acpica/source/components/executer/exconcat.c:414 <platform-bus-x86.so>+0x280405 #7 0x00002132da5ad5a4 in acpi_ex_opcode_2A_1T_1R(struct acpi_walk_state*) ../../third_party/acpica/source/components/executer/exoparg2.c:383 <platform-bus-x86.so>+0x27b5a4 #8 0x00002132da57ee7d in acpi_ds_exec_end_op(struct acpi_walk_state*) ../../third_party/acpica/source/components/dispatcher/dswexec.c:482 <platform-bus-x86.so>+0x24ce7d #9 0x00002132da5ed196 in acpi_ps_parse_loop(struct acpi_walk_state*) ../../third_party/acpica/source/components/parser/psloop.c:554 <platform-bus-x86.so>+0x2bb196 #10 0x00002132da5ea458 in acpi_ps_parse_aml(struct acpi_walk_state*) ../../third_party/acpica/source/components/parser/psparse.c:525 <platform-bus-x86.so>+0x2b8458 #11 0x00002132da5f8a92 in acpi_ps_execute_method(struct acpi_evaluate_info*) ../../third_party/acpica/source/components/parser/psxface.c:244 <platform-bus-x86.so>+0x2c6a92 #12 0x00002132da55c2b2 in acpi_ns_evaluate(struct acpi_evaluate_info*) ../../third_party/acpica/source/components/namespace/nseval.c:250 <platform-bus-x86.so>+0x22a2b2 #13 0x00002132da61fd45 in acpi_ut_evaluate_object(struct acpi_namespace_node*, const char*, u32, union acpi_operand_object**) ../../third_party/acpica/source/components/utilities/uteval.c:100 <platform-bus-x86.so>+0x2edd45 #14 0x00002132da606197 in acpi_rs_get_method_data(acpi_handle, const char*, struct acpi_buffer*) ../../third_party/acpica/source/components/resources/rsutils.c:757 <platform-bus-x86.so>+0x2d4197 #15 0x00002132da60652d in acpi_walk_resources(acpi_handle, char*, acpi_walk_resource_callback, void*) ../../third_party/acpica/source/components/resources/rsxface.c:731 <platform-bus-x86.so>+0x2d452d #16 0x00002132da41dd48 in acpi::acpi_impl::walk_resources(acpi::acpi_impl*, acpi_handle, const char*, acpi::Acpi::resources_callable) ../../src/devices/board/lib/acpi/acpi-impl.cc:41 <platform-bus-x86.so>+0xebd48 #17 0x00002132da42394d in acpi::device_builder::gather_resources(acpi::device_builder*, acpi::Acpi*, fidl::any_arena&, acpi::Manager*, acpi::device_builder::gather_resources_callback) ../../src/devices/board/lib/acpi/device-builder.cc:52 <platform-bus-x86.so>+0xf194d #18 0x00002132da4afaf2 in acpi::Manager::configure_discovered_devices(acpi::Manager*) ../../src/devices/board/lib/acpi/manager.cc:75 <platform-bus-x86.so>+0x17daf2 #19 0x00002132da3d7b44 in publish_acpi_devices(acpi::Manager*, zx_device_t*, zx_device_t*) ../../src/devices/board/drivers/x86/acpi-nswalk.cc:102 <platform-bus-x86.so>+0xa5b44 #20 0x00002132da3e96f7 in x86::X86::do_init(x86::X86*) ../../src/devices/board/drivers/x86/x86.cc:65 <platform-bus-x86.so>+0xb76f7 #21.1 0x00002132da3f38ea in λ(x86::X86::ddk_init::(anon class)*) ../../src/devices/board/drivers/x86/x86.cc:82 <platform-bus-x86.so>+0xc18ea #21 0x00002132da3f38ea in fit::internal::target<(lambda at../../src/devices/board/drivers/x86/x86.cc:81:19), false, false, void>::invoke(void*) ../../sdk/lib/fit/include/lib/fit/internal/function.h:181 <platform-bus-x86.so>+0xc18ea #22.2 0x00002132da638c6c in fit::internal::function_base<16UL, false, void()>::invoke(const fit::internal::function_base<16UL, false, void ()>*) ../../sdk/lib/fit/include/lib/fit/internal/function.h:505 <platform-bus-x86.so>+0x306c6c #22.1 0x00002132da638c6c in fit::function_impl<16UL, false, void()>::operator()(const fit::function_impl<16UL, false, void ()>*) ../../sdk/lib/fit/include/lib/fit/function.h:300 <platform-bus-x86.so>+0x306c6c #22 0x00002132da638c6c in async::internal::retained_task::Handler(async_dispatcher_t*, async_task_t*, zx_status_t) ../../zircon/system/ulib/async/task.cc:25 <platform-bus-x86.so>+0x306c6c #23.1 0x000022c67b305d91 in λ(const driver_runtime::Dispatcher::post_task::(anon class)*, std::__2::unique_ptr<driver_runtime::callback_request, std::__2::default_delete<driver_runtime::callback_request> >, zx_status_t) ../../src/devices/bin/driver_runtime/dispatcher.cc:715 <libdriver_runtime.so>+0x4bd91 #23 0x000022c67b305d91 in fit::internal::target<(lambda at../../src/devices/bin/driver_runtime/dispatcher.cc:714:7), true, false, void, std::__2::unique_ptr<driver_runtime::callback_request, std::__2::default_delete<driver_runtime::callback_request>>, int>::invoke(void*, std::__2::unique_ptr<driver_runtime::callback_request, std::__2::default_delete<driver_runtime::callback_request> >, int) ../../sdk/lib/fit/include/lib/fit/internal/function.h:128 <libdriver_runtime.so>+0x4bd91 #24 0x000022c67b2febc9 in fit::internal::function_base<24UL, true, void(std::__2::unique_ptr<driver_runtime::callback_request, std::__2::default_delete<driver_runtime::callback_request>>, int)>::invoke(const fit::internal::function_base<24UL, true, void (std::__2::unique_ptr<driver_runtime::callback_request, std::__2::default_delete<driver_runtime::callback_request> >, int)>*, std::__2::unique_ptr<driver_runtime::callback_request, std::__2::default_delete<driver_runtime::callback_request> >, int) ../../sdk/lib/fit/include/lib/fit/internal/function.h:505 <libdriver_runtime.so>+0x44bc9 #25 0x000022c67b2fe8dd in fit::callback_impl<24UL, true, void(std::__2::unique_ptr<driver_runtime::callback_request, std::__2::default_delete<driver_runtime::callback_request>>, int)>::operator()(fit::callback_impl<24UL, true, void (std::__2::unique_ptr<driver_runtime::callback_request, std::__2::default_delete<driver_runtime::callback_request> >, int)>*, std::__2::unique_ptr<driver_runtime::callback_request, std::__2::default_delete<driver_runtime::callback_request> >, int) ../../sdk/lib/fit/include/lib/fit/function.h:451 <libdriver_runtime.so>+0x448dd #26 0x000022c67b2ef6a6 in driver_runtime::callback_request::Call(driver_runtime::callback_request*, std::__2::unique_ptr<driver_runtime::callback_request, std::__2::default_delete<driver_runtime::callback_request> >, zx_status_t) ../../src/devices/bin/driver_runtime/callback_request.h:67 <libdriver_runtime.so>+0x356a6 #27 0x000022c67b2f64c8 in driver_runtime::Dispatcher::dispatch_callback(driver_runtime::Dispatcher*, std::__2::unique_ptr<driver_runtime::callback_request, std::__2::default_delete<driver_runtime::callback_request> >) ../../src/devices/bin/driver_runtime/dispatcher.cc:1093 <libdriver_runtime.so>+0x3c4c8 #28 0x000022c67b2f72c1 in driver_runtime::Dispatcher::dispatch_callbacks(driver_runtime::Dispatcher*, std::__2::unique_ptr<driver_runtime::Dispatcher::event_waiter, std::__2::default_delete<driver_runtime::Dispatcher::event_waiter> >, fbl::ref_ptr<driver_runtime::Dispatcher>) ../../src/devices/bin/driver_runtime/dispatcher.cc:1169 <libdriver_runtime.so>+0x3d2c1 #29.1 0x000022c67b30281e in λ(std::__2::unique_ptr<driver_runtime::Dispatcher::event_waiter, std::__2::default_delete<driver_runtime::Dispatcher::event_waiter> >, fbl::ref_ptr<driver_runtime::Dispatcher>, const driver_runtime::Dispatcher::create_with_adder::(anon class)*) ../../src/devices/bin/driver_runtime/dispatcher.cc:338 <libdriver_runtime.so>+0x4881e #29 0x000022c67b30281e in fit::internal::target<(lambda at../../src/devices/bin/driver_runtime/dispatcher.cc:337:7), true, false, void, std::__2::unique_ptr<driver_runtime::Dispatcher::event_waiter, std::__2::default_delete<driver_runtime::Dispatcher::event_waiter>>, fbl::ref_ptr<driver_runtime::Dispatcher>>::invoke(void*, std::__2::unique_ptr<driver_runtime::Dispatcher::event_waiter, std::__2::default_delete<driver_runtime::Dispatcher::event_waiter> >, fbl::ref_ptr<driver_runtime::Dispatcher>) ../../sdk/lib/fit/include/lib/fit/internal/function.h:128 <libdriver_runtime.so>+0x4881e #30 0x000022c67b2fee7e in fit::internal::function_base<8UL, true, void(std::__2::unique_ptr<driver_runtime::Dispatcher::event_waiter, std::__2::default_delete<driver_runtime::Dispatcher::event_waiter>>, fbl::ref_ptr<driver_runtime::Dispatcher>)>::invoke(const fit::internal::function_base<8UL, true, void (std::__2::unique_ptr<driver_runtime::Dispatcher::event_waiter, std::__2::default_delete<driver_runtime::Dispatcher::event_waiter> >, fbl::ref_ptr<driver_runtime::Dispatcher>)>*, std::__2::unique_ptr<driver_runtime::Dispatcher::event_waiter, std::__2::default_delete<driver_runtime::Dispatcher::event_waiter> >, fbl::ref_ptr<driver_runtime::Dispatcher>) ../../sdk/lib/fit/include/lib/fit/internal/function.h:505 <libdriver_runtime.so>+0x44e7e #31.1 0x000022c67b2f8964 in fit::function_impl<8UL, true, void(std::__2::unique_ptr<driver_runtime::Dispatcher::event_waiter, std::__2::default_delete<driver_runtime::Dispatcher::event_waiter>>, fbl::ref_ptr<driver_runtime::Dispatcher>)>::operator()(const fit::function_impl<8UL, true, void (std::__2::unique_ptr<driver_runtime::Dispatcher::event_waiter, std::__2::default_delete<driver_runtime::Dispatcher::event_waiter> >, fbl::ref_ptr<driver_runtime::Dispatcher>)>*, std::__2::unique_ptr<driver_runtime::Dispatcher::event_waiter, std::__2::default_delete<driver_runtime::Dispatcher::event_waiter> >, fbl::ref_ptr<driver_runtime::Dispatcher>) ../../sdk/lib/fit/include/lib/fit/function.h:300 <libdriver_runtime.so>+0x3e964 #31 0x000022c67b2f8964 in driver_runtime::Dispatcher::event_waiter::invoke_callback(driver_runtime::Dispatcher::event_waiter*, std::__2::unique_ptr<driver_runtime::Dispatcher::event_waiter, std::__2::default_delete<driver_runtime::Dispatcher::event_waiter> >, fbl::ref_ptr<driver_runtime::Dispatcher>) ../../src/devices/bin/driver_runtime/dispatcher.h:299 <libdriver_runtime.so>+0x3e964 #32 0x000022c67b2f835d in driver_runtime::Dispatcher::event_waiter::handle_event(std::__2::unique_ptr<driver_runtime::Dispatcher::event_waiter, std::__2::default_delete<driver_runtime::Dispatcher::event_waiter> >, async_dispatcher_t*, async::wait_base*, zx_status_t, zx_packet_signal_t const*) ../../src/devices/bin/driver_runtime/dispatcher.cc:1259 <libdriver_runtime.so>+0x3e35d #33.1 0x000022c67b302c00 in async_loop_owned_event_handler<driver_runtime::Dispatcher::event_waiter>::handle_event(async_loop_owned_event_handler<driver_runtime::Dispatcher::event_waiter>*, zx_status_t, zx_packet_signal_t const*, async_dispatcher_t*, async::wait_base*) ../../src/devices/bin/driver_runtime/async_loop_owned_event_handler.h:59 <libdriver_runtime.so>+0x48c00 #33 0x000022c67b302c00 in async::wait_method<async_loop_owned_event_handler<driver_runtime::Dispatcher::event_waiter>, &async_loop_owned_event_handler<driver_runtime::Dispatcher::event_waiter>::handle_event>::call_handler(async_dispatcher_t*, async_wait_t*, zx_status_t, zx_packet_signal_t const*) ../../zircon/system/ulib/async/include/lib/async/cpp/wait.h:201 <libdriver_runtime.so>+0x48c00 #34.1 0x000022c67b324ead in async_loop_run_once(async_loop_t*, zx_time_t) ../../zircon/system/ulib/async-loop/loop.c:415 <libdriver_runtime.so>+0x6aead #34 0x000022c67b324ead in async_loop_run(async_loop_t*, zx_time_t, _Bool) ../../zircon/system/ulib/async-loop/loop.c:288 <libdriver_runtime.so>+0x6aead #35 0x000022c67b32678f in async_loop_run_thread(void*) ../../zircon/system/ulib/async-loop/loop.c:840 <libdriver_runtime.so>+0x6c78f #36 0x0000431cc3246edc in start_c11(void*) ../../zircon/third_party/ulib/musl/pthread/pthread_create.c:55 <libc.so>+0xd7edc #37 0x0000431cc337796d in thread_trampoline(uintptr_t, uintptr_t) ../../zircon/system/ulib/runtime/thread.cc:100 <libc.so>+0x20896d Link: https://github.com/acpica/acpica/commit/7b23bdc3 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
573 lines
16 KiB
C
573 lines
16 KiB
C
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
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/*******************************************************************************
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*
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* Module Name: utresrc - Resource management utilities
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*
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******************************************************************************/
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#include <acpi/acpi.h>
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#include "accommon.h"
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#include "acresrc.h"
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#define _COMPONENT ACPI_UTILITIES
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ACPI_MODULE_NAME("utresrc")
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/*
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* Base sizes of the raw AML resource descriptors, indexed by resource type.
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* Zero indicates a reserved (and therefore invalid) resource type.
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*/
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const u8 acpi_gbl_resource_aml_sizes[] = {
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/* Small descriptors */
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0,
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0,
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0,
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0,
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ACPI_AML_SIZE_SMALL(struct aml_resource_irq),
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ACPI_AML_SIZE_SMALL(struct aml_resource_dma),
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ACPI_AML_SIZE_SMALL(struct aml_resource_start_dependent),
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ACPI_AML_SIZE_SMALL(struct aml_resource_end_dependent),
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ACPI_AML_SIZE_SMALL(struct aml_resource_io),
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ACPI_AML_SIZE_SMALL(struct aml_resource_fixed_io),
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ACPI_AML_SIZE_SMALL(struct aml_resource_fixed_dma),
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0,
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0,
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0,
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ACPI_AML_SIZE_SMALL(struct aml_resource_vendor_small),
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ACPI_AML_SIZE_SMALL(struct aml_resource_end_tag),
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/* Large descriptors */
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0,
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ACPI_AML_SIZE_LARGE(struct aml_resource_memory24),
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ACPI_AML_SIZE_LARGE(struct aml_resource_generic_register),
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0,
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ACPI_AML_SIZE_LARGE(struct aml_resource_vendor_large),
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ACPI_AML_SIZE_LARGE(struct aml_resource_memory32),
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ACPI_AML_SIZE_LARGE(struct aml_resource_fixed_memory32),
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ACPI_AML_SIZE_LARGE(struct aml_resource_address32),
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ACPI_AML_SIZE_LARGE(struct aml_resource_address16),
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ACPI_AML_SIZE_LARGE(struct aml_resource_extended_irq),
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ACPI_AML_SIZE_LARGE(struct aml_resource_address64),
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ACPI_AML_SIZE_LARGE(struct aml_resource_extended_address64),
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ACPI_AML_SIZE_LARGE(struct aml_resource_gpio),
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ACPI_AML_SIZE_LARGE(struct aml_resource_pin_function),
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ACPI_AML_SIZE_LARGE(struct aml_resource_common_serialbus),
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ACPI_AML_SIZE_LARGE(struct aml_resource_pin_config),
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ACPI_AML_SIZE_LARGE(struct aml_resource_pin_group),
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ACPI_AML_SIZE_LARGE(struct aml_resource_pin_group_function),
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ACPI_AML_SIZE_LARGE(struct aml_resource_pin_group_config),
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ACPI_AML_SIZE_LARGE(struct aml_resource_clock_input),
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};
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const u8 acpi_gbl_resource_aml_serial_bus_sizes[] = {
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0,
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ACPI_AML_SIZE_LARGE(struct aml_resource_i2c_serialbus),
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ACPI_AML_SIZE_LARGE(struct aml_resource_spi_serialbus),
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ACPI_AML_SIZE_LARGE(struct aml_resource_uart_serialbus),
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ACPI_AML_SIZE_LARGE(struct aml_resource_csi2_serialbus),
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};
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/*
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* Resource types, used to validate the resource length field.
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* The length of fixed-length types must match exactly, variable
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* lengths must meet the minimum required length, etc.
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* Zero indicates a reserved (and therefore invalid) resource type.
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*/
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static const u8 acpi_gbl_resource_types[] = {
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/* Small descriptors */
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0,
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0,
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0,
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0,
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ACPI_SMALL_VARIABLE_LENGTH, /* 04 IRQ */
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ACPI_FIXED_LENGTH, /* 05 DMA */
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ACPI_SMALL_VARIABLE_LENGTH, /* 06 start_dependent_functions */
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ACPI_FIXED_LENGTH, /* 07 end_dependent_functions */
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ACPI_FIXED_LENGTH, /* 08 IO */
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ACPI_FIXED_LENGTH, /* 09 fixed_IO */
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ACPI_FIXED_LENGTH, /* 0A fixed_DMA */
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0,
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0,
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0,
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ACPI_VARIABLE_LENGTH, /* 0E vendor_short */
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ACPI_FIXED_LENGTH, /* 0F end_tag */
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/* Large descriptors */
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0,
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ACPI_FIXED_LENGTH, /* 01 Memory24 */
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ACPI_FIXED_LENGTH, /* 02 generic_register */
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0,
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ACPI_VARIABLE_LENGTH, /* 04 vendor_long */
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ACPI_FIXED_LENGTH, /* 05 Memory32 */
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ACPI_FIXED_LENGTH, /* 06 memory32_fixed */
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ACPI_VARIABLE_LENGTH, /* 07 Dword* address */
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ACPI_VARIABLE_LENGTH, /* 08 Word* address */
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ACPI_VARIABLE_LENGTH, /* 09 extended_IRQ */
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ACPI_VARIABLE_LENGTH, /* 0A Qword* address */
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ACPI_FIXED_LENGTH, /* 0B Extended* address */
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ACPI_VARIABLE_LENGTH, /* 0C Gpio* */
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ACPI_VARIABLE_LENGTH, /* 0D pin_function */
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ACPI_VARIABLE_LENGTH, /* 0E *serial_bus */
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ACPI_VARIABLE_LENGTH, /* 0F pin_config */
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ACPI_VARIABLE_LENGTH, /* 10 pin_group */
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ACPI_VARIABLE_LENGTH, /* 11 pin_group_function */
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ACPI_VARIABLE_LENGTH, /* 12 pin_group_config */
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ACPI_VARIABLE_LENGTH, /* 13 clock_input */
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};
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/*******************************************************************************
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*
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* FUNCTION: acpi_ut_walk_aml_resources
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*
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* PARAMETERS: walk_state - Current walk info
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* PARAMETERS: aml - Pointer to the raw AML resource template
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* aml_length - Length of the entire template
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* user_function - Called once for each descriptor found. If
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* NULL, a pointer to the end_tag is returned
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* context - Passed to user_function
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*
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* RETURN: Status
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*
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* DESCRIPTION: Walk a raw AML resource list(buffer). User function called
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* once for each resource found.
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*
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******************************************************************************/
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acpi_status
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acpi_ut_walk_aml_resources(struct acpi_walk_state *walk_state,
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u8 *aml,
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acpi_size aml_length,
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acpi_walk_aml_callback user_function, void **context)
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{
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acpi_status status;
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u8 *end_aml;
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u8 resource_index;
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u32 length;
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u32 offset = 0;
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u8 end_tag[2] = { 0x79, 0x00 };
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ACPI_FUNCTION_TRACE(ut_walk_aml_resources);
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/* The absolute minimum resource template is one end_tag descriptor */
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if (aml_length < sizeof(struct aml_resource_end_tag)) {
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return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
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}
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/* Point to the end of the resource template buffer */
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end_aml = aml + aml_length;
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/* Walk the byte list, abort on any invalid descriptor type or length */
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while (aml < end_aml) {
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/* Validate the Resource Type and Resource Length */
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status =
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acpi_ut_validate_resource(walk_state, aml, &resource_index);
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if (ACPI_FAILURE(status)) {
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/*
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* Exit on failure. Cannot continue because the descriptor
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* length may be bogus also.
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*/
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return_ACPI_STATUS(status);
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}
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/* Get the length of this descriptor */
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length = acpi_ut_get_descriptor_length(aml);
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/* Invoke the user function */
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if (user_function) {
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status =
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user_function(aml, length, offset, resource_index,
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context);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
|
|
/* An end_tag descriptor terminates this resource template */
|
|
|
|
if (acpi_ut_get_resource_type(aml) ==
|
|
ACPI_RESOURCE_NAME_END_TAG) {
|
|
/*
|
|
* There must be at least one more byte in the buffer for
|
|
* the 2nd byte of the end_tag
|
|
*/
|
|
if ((aml + 1) >= end_aml) {
|
|
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
|
|
}
|
|
|
|
/*
|
|
* Don't attempt to perform any validation on the 2nd byte.
|
|
* Although all known ASL compilers insert a zero for the 2nd
|
|
* byte, it can also be a checksum (as per the ACPI spec),
|
|
* and this is occasionally seen in the field. July 2017.
|
|
*/
|
|
|
|
/* Return the pointer to the end_tag if requested */
|
|
|
|
if (!user_function) {
|
|
*context = aml;
|
|
}
|
|
|
|
/* Normal exit */
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
aml += length;
|
|
offset += length;
|
|
}
|
|
|
|
/* Did not find an end_tag descriptor */
|
|
|
|
if (user_function) {
|
|
|
|
/* Insert an end_tag anyway. acpi_rs_get_list_length always leaves room */
|
|
|
|
(void)acpi_ut_validate_resource(walk_state, end_tag,
|
|
&resource_index);
|
|
status =
|
|
user_function(end_tag, 2, offset, resource_index, context);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
|
|
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_validate_resource
|
|
*
|
|
* PARAMETERS: walk_state - Current walk info
|
|
* aml - Pointer to the raw AML resource descriptor
|
|
* return_index - Where the resource index is returned. NULL
|
|
* if the index is not required.
|
|
*
|
|
* RETURN: Status, and optionally the Index into the global resource tables
|
|
*
|
|
* DESCRIPTION: Validate an AML resource descriptor by checking the Resource
|
|
* Type and Resource Length. Returns an index into the global
|
|
* resource information/dispatch tables for later use.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ut_validate_resource(struct acpi_walk_state *walk_state,
|
|
void *aml, u8 *return_index)
|
|
{
|
|
union aml_resource *aml_resource;
|
|
u8 resource_type;
|
|
u8 resource_index;
|
|
acpi_rs_length resource_length;
|
|
acpi_rs_length minimum_resource_length;
|
|
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
/*
|
|
* 1) Validate the resource_type field (Byte 0)
|
|
*/
|
|
resource_type = ACPI_GET8(aml);
|
|
|
|
/*
|
|
* Byte 0 contains the descriptor name (Resource Type)
|
|
* Examine the large/small bit in the resource header
|
|
*/
|
|
if (resource_type & ACPI_RESOURCE_NAME_LARGE) {
|
|
|
|
/* Verify the large resource type (name) against the max */
|
|
|
|
if (resource_type > ACPI_RESOURCE_NAME_LARGE_MAX) {
|
|
goto invalid_resource;
|
|
}
|
|
|
|
/*
|
|
* Large Resource Type -- bits 6:0 contain the name
|
|
* Translate range 0x80-0x8B to index range 0x10-0x1B
|
|
*/
|
|
resource_index = (u8) (resource_type - 0x70);
|
|
} else {
|
|
/*
|
|
* Small Resource Type -- bits 6:3 contain the name
|
|
* Shift range to index range 0x00-0x0F
|
|
*/
|
|
resource_index = (u8)
|
|
((resource_type & ACPI_RESOURCE_NAME_SMALL_MASK) >> 3);
|
|
}
|
|
|
|
/*
|
|
* Check validity of the resource type, via acpi_gbl_resource_types.
|
|
* Zero indicates an invalid resource.
|
|
*/
|
|
if (!acpi_gbl_resource_types[resource_index]) {
|
|
goto invalid_resource;
|
|
}
|
|
|
|
/*
|
|
* Validate the resource_length field. This ensures that the length
|
|
* is at least reasonable, and guarantees that it is non-zero.
|
|
*/
|
|
resource_length = acpi_ut_get_resource_length(aml);
|
|
minimum_resource_length = acpi_gbl_resource_aml_sizes[resource_index];
|
|
|
|
/* Validate based upon the type of resource - fixed length or variable */
|
|
|
|
switch (acpi_gbl_resource_types[resource_index]) {
|
|
case ACPI_FIXED_LENGTH:
|
|
|
|
/* Fixed length resource, length must match exactly */
|
|
|
|
if (resource_length != minimum_resource_length) {
|
|
goto bad_resource_length;
|
|
}
|
|
break;
|
|
|
|
case ACPI_VARIABLE_LENGTH:
|
|
|
|
/* Variable length resource, length must be at least the minimum */
|
|
|
|
if (resource_length < minimum_resource_length) {
|
|
goto bad_resource_length;
|
|
}
|
|
break;
|
|
|
|
case ACPI_SMALL_VARIABLE_LENGTH:
|
|
|
|
/* Small variable length resource, length can be (Min) or (Min-1) */
|
|
|
|
if ((resource_length > minimum_resource_length) ||
|
|
(resource_length < (minimum_resource_length - 1))) {
|
|
goto bad_resource_length;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
/* Shouldn't happen (because of validation earlier), but be sure */
|
|
|
|
goto invalid_resource;
|
|
}
|
|
|
|
aml_resource = ACPI_CAST_PTR(union aml_resource, aml);
|
|
if (resource_type == ACPI_RESOURCE_NAME_SERIAL_BUS) {
|
|
|
|
/* Avoid undefined behavior: member access within misaligned address */
|
|
|
|
struct aml_resource_common_serialbus common_serial_bus;
|
|
memcpy(&common_serial_bus, aml_resource,
|
|
sizeof(common_serial_bus));
|
|
|
|
/* Validate the bus_type field */
|
|
|
|
if ((common_serial_bus.type == 0) ||
|
|
(common_serial_bus.type > AML_RESOURCE_MAX_SERIALBUSTYPE)) {
|
|
if (walk_state) {
|
|
ACPI_ERROR((AE_INFO,
|
|
"Invalid/unsupported SerialBus resource descriptor: BusType 0x%2.2X",
|
|
common_serial_bus.type));
|
|
}
|
|
return (AE_AML_INVALID_RESOURCE_TYPE);
|
|
}
|
|
}
|
|
|
|
/* Optionally return the resource table index */
|
|
|
|
if (return_index) {
|
|
*return_index = resource_index;
|
|
}
|
|
|
|
return (AE_OK);
|
|
|
|
invalid_resource:
|
|
|
|
if (walk_state) {
|
|
ACPI_ERROR((AE_INFO,
|
|
"Invalid/unsupported resource descriptor: Type 0x%2.2X",
|
|
resource_type));
|
|
}
|
|
return (AE_AML_INVALID_RESOURCE_TYPE);
|
|
|
|
bad_resource_length:
|
|
|
|
if (walk_state) {
|
|
ACPI_ERROR((AE_INFO,
|
|
"Invalid resource descriptor length: Type "
|
|
"0x%2.2X, Length 0x%4.4X, MinLength 0x%4.4X",
|
|
resource_type, resource_length,
|
|
minimum_resource_length));
|
|
}
|
|
return (AE_AML_BAD_RESOURCE_LENGTH);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_get_resource_type
|
|
*
|
|
* PARAMETERS: aml - Pointer to the raw AML resource descriptor
|
|
*
|
|
* RETURN: The Resource Type with no extraneous bits (except the
|
|
* Large/Small descriptor bit -- this is left alone)
|
|
*
|
|
* DESCRIPTION: Extract the Resource Type/Name from the first byte of
|
|
* a resource descriptor.
|
|
*
|
|
******************************************************************************/
|
|
|
|
u8 acpi_ut_get_resource_type(void *aml)
|
|
{
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
/*
|
|
* Byte 0 contains the descriptor name (Resource Type)
|
|
* Examine the large/small bit in the resource header
|
|
*/
|
|
if (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_LARGE) {
|
|
|
|
/* Large Resource Type -- bits 6:0 contain the name */
|
|
|
|
return (ACPI_GET8(aml));
|
|
} else {
|
|
/* Small Resource Type -- bits 6:3 contain the name */
|
|
|
|
return ((u8) (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_SMALL_MASK));
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_get_resource_length
|
|
*
|
|
* PARAMETERS: aml - Pointer to the raw AML resource descriptor
|
|
*
|
|
* RETURN: Byte Length
|
|
*
|
|
* DESCRIPTION: Get the "Resource Length" of a raw AML descriptor. By
|
|
* definition, this does not include the size of the descriptor
|
|
* header or the length field itself.
|
|
*
|
|
******************************************************************************/
|
|
|
|
u16 acpi_ut_get_resource_length(void *aml)
|
|
{
|
|
acpi_rs_length resource_length;
|
|
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
/*
|
|
* Byte 0 contains the descriptor name (Resource Type)
|
|
* Examine the large/small bit in the resource header
|
|
*/
|
|
if (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_LARGE) {
|
|
|
|
/* Large Resource type -- bytes 1-2 contain the 16-bit length */
|
|
|
|
ACPI_MOVE_16_TO_16(&resource_length, ACPI_ADD_PTR(u8, aml, 1));
|
|
|
|
} else {
|
|
/* Small Resource type -- bits 2:0 of byte 0 contain the length */
|
|
|
|
resource_length = (u16) (ACPI_GET8(aml) &
|
|
ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK);
|
|
}
|
|
|
|
return (resource_length);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_get_resource_header_length
|
|
*
|
|
* PARAMETERS: aml - Pointer to the raw AML resource descriptor
|
|
*
|
|
* RETURN: Length of the AML header (depends on large/small descriptor)
|
|
*
|
|
* DESCRIPTION: Get the length of the header for this resource.
|
|
*
|
|
******************************************************************************/
|
|
|
|
u8 acpi_ut_get_resource_header_length(void *aml)
|
|
{
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
/* Examine the large/small bit in the resource header */
|
|
|
|
if (ACPI_GET8(aml) & ACPI_RESOURCE_NAME_LARGE) {
|
|
return (sizeof(struct aml_resource_large_header));
|
|
} else {
|
|
return (sizeof(struct aml_resource_small_header));
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_get_descriptor_length
|
|
*
|
|
* PARAMETERS: aml - Pointer to the raw AML resource descriptor
|
|
*
|
|
* RETURN: Byte length
|
|
*
|
|
* DESCRIPTION: Get the total byte length of a raw AML descriptor, including the
|
|
* length of the descriptor header and the length field itself.
|
|
* Used to walk descriptor lists.
|
|
*
|
|
******************************************************************************/
|
|
|
|
u32 acpi_ut_get_descriptor_length(void *aml)
|
|
{
|
|
ACPI_FUNCTION_ENTRY();
|
|
|
|
/*
|
|
* Get the Resource Length (does not include header length) and add
|
|
* the header length (depends on if this is a small or large resource)
|
|
*/
|
|
return (acpi_ut_get_resource_length(aml) +
|
|
acpi_ut_get_resource_header_length(aml));
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ut_get_resource_end_tag
|
|
*
|
|
* PARAMETERS: obj_desc - The resource template buffer object
|
|
* end_tag - Where the pointer to the end_tag is returned
|
|
*
|
|
* RETURN: Status, pointer to the end tag
|
|
*
|
|
* DESCRIPTION: Find the end_tag resource descriptor in an AML resource template
|
|
* Note: allows a buffer length of zero.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ut_get_resource_end_tag(union acpi_operand_object *obj_desc, u8 **end_tag)
|
|
{
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(ut_get_resource_end_tag);
|
|
|
|
/* Allow a buffer length of zero */
|
|
|
|
if (!obj_desc->buffer.length) {
|
|
*end_tag = obj_desc->buffer.pointer;
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
/* Validate the template and get a pointer to the end_tag */
|
|
|
|
status = acpi_ut_walk_aml_resources(NULL, obj_desc->buffer.pointer,
|
|
obj_desc->buffer.length, NULL,
|
|
(void **)end_tag);
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|