RE: [PATCH 12/15] ACPICA: ACPI 6.1: Add full support for this version of ACPI spec

From: Moore, Robert
Date: Wed Feb 24 2016 - 11:22:45 EST

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> -----Original Message-----
> From: Abdulhamid, Harb [mailto:harba@xxxxxxxxxxxxxx]
> Sent: Saturday, February 20, 2016 1:41 PM
> To: Zheng, Lv; Wysocki, Rafael J; Rafael J. Wysocki; Brown, Len
> Cc: Lv Zheng; linux-kernel@xxxxxxxxxxxxxxx; linux-acpi@xxxxxxxxxxxxxxx;
> Moore, Robert; Al Stone; fu.wei@xxxxxxxxxx; tbaicar@xxxxxxxxxxxxxx;
> rruigrok@xxxxxxxxxxxxxx
> Subject: Re: [PATCH 12/15] ACPICA: ACPI 6.1: Add full support for this
> version of ACPI spec
>
> On 2/19/2016 1:17 AM, Lv Zheng wrote:
> > From: Bob Moore <robert.moore@xxxxxxxxx>
> >
> > ACPICA commit 5f21bddaa2cec035ca80608803ce2f0858d4f387
> >
> > Small changes:
> > 1) A couple new predefined names
> > 2) New _HID values
> I don't see where you are adding new _HID values in this patch.
>

Not everything in the patch actually makes it into the Linux kernel. The new _HID values are for the AcpiHelp tables, which in turn are also used by the disassembler.

> > 3) New subtable for HEST
> >
> > Link: https://github.com/acpica/acpica/commit/5f21bdda
> > Signed-off-by: Bob Moore <robert.moore@xxxxxxxxx>
> > Signed-off-by: Lv Zheng <lv.zheng@xxxxxxxxx>
> > ---
> > drivers/acpi/acpica/acpredef.h | 9 +++++++++
> > drivers/acpi/acpica/utdecode.c | 30 +++++++++++++++++-------------
> > include/acpi/actbl.h | 2 +-
> > include/acpi/actbl1.h | 29 ++++++++++++++++++++++++++---
> > include/acpi/actypes.h | 3 ++-
> > 5 files changed, 55 insertions(+), 18 deletions(-)
> >
> > diff --git a/drivers/acpi/acpica/acpredef.h
> > b/drivers/acpi/acpica/acpredef.h index 5faeab4..4ca426b 100644
> > --- a/drivers/acpi/acpica/acpredef.h
> > +++ b/drivers/acpi/acpica/acpredef.h
> > @@ -523,6 +523,9 @@ const union acpi_predefined_info
> acpi_gbl_predefined_methods[] = {
> > METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (4 Int) */
> > PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 4, 0, 0, 0),
> >
> > + {{"_FIT", METHOD_0ARGS,
> > + METHOD_RETURNS(ACPI_RTYPE_BUFFER)}}, /* ACPI 6.0 */
> > +
> > {{"_FIX", METHOD_0ARGS,
> > METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Ints)
> */
> > PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 0, 0, 0, 0), @@
> > -1053,6 +1056,12 @@ const union acpi_predefined_info
> acpi_gbl_predefined_methods[] = {
> > METHOD_RETURNS(ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING |
> > ACPI_RTYPE_BUFFER)}},
> >
> > + {{"_WPC", METHOD_0ARGS,
> > + METHOD_RETURNS(ACPI_RTYPE_INTEGER)}}, /* ACPI 6.1 */
> > +
> > + {{"_WPP", METHOD_0ARGS,
> > + METHOD_RETURNS(ACPI_RTYPE_INTEGER)}}, /* ACPI 6.1 */
> > +
> > PACKAGE_INFO(0, 0, 0, 0, 0, 0) /* Table terminator */
> > };
> > #else
> > diff --git a/drivers/acpi/acpica/utdecode.c
> > b/drivers/acpi/acpica/utdecode.c index 6ba65b0..efd7988 100644
> > --- a/drivers/acpi/acpica/utdecode.c
> > +++ b/drivers/acpi/acpica/utdecode.c
> > @@ -446,7 +446,7 @@ const char *acpi_ut_get_mutex_name(u32 mutex_id)
> >
> > /* Names for Notify() values, used for debug output */
> >
> > -static const char *acpi_gbl_generic_notify[ACPI_NOTIFY_MAX + 1] = {
> > +static const char *acpi_gbl_generic_notify[ACPI_GENERIC_NOTIFY_MAX +
> > +1] = {
> > /* 00 */ "Bus Check",
> > /* 01 */ "Device Check",
> > /* 02 */ "Device Wake",
> > @@ -459,49 +459,53 @@ static const char
> *acpi_gbl_generic_notify[ACPI_NOTIFY_MAX + 1] = {
> > /* 09 */ "Device PLD Check",
> > /* 0A */ "Reserved",
> > /* 0B */ "System Locality Update",
> > - /* 0C */ "Shutdown Request",
> > + /* 0C */ "Shutdown Request",
> > + /* Reserved in ACPI 6.0 */
> > /* 0D */ "System Resource Affinity Update"
> > };
> >
> > -static const char *acpi_gbl_device_notify[4] = {
> > +static const char *acpi_gbl_device_notify[5] = {
> > /* 80 */ "Status Change",
> > /* 81 */ "Information Change",
> > /* 82 */ "Device-Specific Change",
> > - /* 83 */ "Device-Specific Change"
> > + /* 83 */ "Device-Specific Change",
> > + /* 84 */ "Reserved"
> > };
> >
> > -static const char *acpi_gbl_processor_notify[4] = {
> > +static const char *acpi_gbl_processor_notify[5] = {
> > /* 80 */ "Performance Capability Change",
> > /* 81 */ "C-State Change",
> > /* 82 */ "Throttling Capability Change",
> > - /* 83 */ "Device-Specific Change"
> > + /* 83 */ "Guaranteed Change",
> > + /* 84 */ "Minimum Excursion"
> > };
> >
> > -static const char *acpi_gbl_thermal_notify[4] = {
> > +static const char *acpi_gbl_thermal_notify[5] = {
> > /* 80 */ "Thermal Status Change",
> > /* 81 */ "Thermal Trip Point Change",
> > /* 82 */ "Thermal Device List Change",
> > - /* 83 */ "Thermal Relationship Change"
> > + /* 83 */ "Thermal Relationship Change",
> > + /* 84 */ "Reserved"
> > };
> >
> > const char *acpi_ut_get_notify_name(u32 notify_value,
> > acpi_object_type type) {
> >
> > - /* 00 - 0D are common to all object types */
> > + /* 00 - 0D are "common to all object types" (from ACPI Spec) */
> >
> > - if (notify_value <= ACPI_NOTIFY_MAX) {
> > + if (notify_value <= ACPI_GENERIC_NOTIFY_MAX) {
> > return (acpi_gbl_generic_notify[notify_value]);
> > }
> >
> > - /* 0D - 7F are reserved */
> > + /* 0E - 7F are reserved */
> >
> > if (notify_value <= ACPI_MAX_SYS_NOTIFY) {
> > return ("Reserved");
> > }
> >
> > - /* 80 - 83 are per-object-type */
> > + /* 80 - 84 are per-object-type */
> >
> > - if (notify_value <= 0x83) {
> > + if (notify_value <= ACPI_SPECIFIC_NOTIFY_MAX) {
> > switch (type) {
> > case ACPI_TYPE_ANY:
> > case ACPI_TYPE_DEVICE:
> > diff --git a/include/acpi/actbl.h b/include/acpi/actbl.h index
> > 0cb1a00..6a4e521 100644
> > --- a/include/acpi/actbl.h
> > +++ b/include/acpi/actbl.h
> > @@ -223,7 +223,7 @@ struct acpi_table_facs {
> >
> /*************************************************************************
> ******
> > *
> > * FADT - Fixed ACPI Description Table (Signature "FACP")
> > - * Version 4
> > + * Version 6
> > *
> >
> > **********************************************************************
> > ********/
> >
> > diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h index
> > 16e0136..26494dd 100644
> > --- a/include/acpi/actbl1.h
> > +++ b/include/acpi/actbl1.h
> > @@ -236,7 +236,8 @@ enum acpi_einj_actions {
> > ACPI_EINJ_CHECK_BUSY_STATUS = 6,
> > ACPI_EINJ_GET_COMMAND_STATUS = 7,
> > ACPI_EINJ_SET_ERROR_TYPE_WITH_ADDRESS = 8,
> > - ACPI_EINJ_ACTION_RESERVED = 9, /* 9 and greater are reserved */
> > + ACPI_EINJ_GET_EXECUTE_TIMINGS = 9,
> > + ACPI_EINJ_ACTION_RESERVED = 10, /* 10 and greater are reserved
> */
> > ACPI_EINJ_TRIGGER_ERROR = 0xFF /* Except for this value */
> > };
> >
> > @@ -348,7 +349,8 @@ enum acpi_erst_actions {
> > ACPI_ERST_GET_ERROR_RANGE = 13,
> > ACPI_ERST_GET_ERROR_LENGTH = 14,
> > ACPI_ERST_GET_ERROR_ATTRIBUTES = 15,
> > - ACPI_ERST_ACTION_RESERVED = 16 /* 16 and greater are reserved
> */
> > + ACPI_ERST_EXECUTE_TIMINGS = 16,
> > + ACPI_ERST_ACTION_RESERVED = 17 /* 17 and greater are reserved
> */
> > };
> >
> > /* Values for Instruction field above */ @@ -427,7 +429,8 @@ enum
> > acpi_hest_types {
> > ACPI_HEST_TYPE_AER_ENDPOINT = 7,
> > ACPI_HEST_TYPE_AER_BRIDGE = 8,
> > ACPI_HEST_TYPE_GENERIC_ERROR = 9,
> > - ACPI_HEST_TYPE_RESERVED = 10 /* 10 and greater are reserved */
> > + ACPI_HEST_TYPE_GENERIC_ERROR_V2 = 10,
> > + ACPI_HEST_TYPE_RESERVED = 11 /* 11 and greater are reserved */
> > };
> >
> > /*
> > @@ -603,6 +606,24 @@ struct acpi_hest_generic {
> > u32 error_block_length;
> > };
> >
> > +/* 10: Generic Hardware Error Source, version 2 */
> > +
> > +struct acpi_hest_generic_v2 {
> > + struct acpi_hest_header header;
> > + u16 related_source_id;
> > + u8 reserved;
> > + u8 enabled;
> > + u32 records_to_preallocate;
> > + u32 max_sections_per_record;
> > + u32 max_raw_data_length;
> > + struct acpi_generic_address error_status_address;
> > + struct acpi_hest_notify notify;
> > + u32 error_block_length;
> > + struct acpi_generic_address read_ack_register;
> > + u64 read_ack_preserve;
> > + u64 read_ack_write;
> > +};
> > +
> > /* Generic Error Status block */
> >
> > struct acpi_hest_generic_status {
> > @@ -632,6 +653,7 @@ struct acpi_hest_generic_data {
> > u32 error_data_length;
> > u8 fru_id[16];
> > u8 fru_text[20];
> > + u64 time_stamp;
> > };
> There is quite a bit of overlap between this patch and our patch series
> (https://lkml.org/lkml/2016/2/5/544)
>
> There are few things I see missing in this patch in your updates made to
> actbl1.h, I list them below:
>
> 1) Adding time stamp as you did breaks backwards compatibility (something
> we discovered during our testing). We tried to remedy this by adding a
> new version of the acpi_hest_generic_data structure. Note that we named
> it v3 to reflect this was the updated version number in ACPI 6.1. (see
> https://lkml.org/lkml/2016/2/5/549)
>
> 2) Missing definition of generic error data validation bits, needed to
> determine whether or not field being read are valid or not (see
> https://lkml.org/lkml/2016/2/5/549)
>
> 3) Need to extend acpi_hest_notify_types to add GPIO, SEA, SEI, and GSIV
> (see https://lkml.org/lkml/2016/2/5/545)
>
> 4) Also for the purpose of backwards compatibility, we needed to add both
> acpi_hest_generic and acpi_hest_generic_v2 to the structure "ghes",
> referencing the v2 pointer when needed.
> (https://lkml.org/lkml/2016/2/5/550)
>
> Can you please review the above patch series patches for comparison, and
> if in agreement, can you please update this patch to better align with the
> changes we need? We can rework our patch series to depend on your patch
> series (i.e. leaving actbl1.h untouched on our side).
>
> >
> >
> > /*********************************************************************
> > ********** @@ -1015,6 +1037,7 @@ struct acpi_nfit_memory_map {
> > #define ACPI_NFIT_MEM_NOT_ARMED (1<<3) /* 03: Memory Device
> is not armed */
> > #define ACPI_NFIT_MEM_HEALTH_OBSERVED (1<<4) /* 04: Memory Device
> observed SMART/health events */
> > #define ACPI_NFIT_MEM_HEALTH_ENABLED (1<<5) /* 05: SMART/health
> events enabled */
> > +#define ACPI_NFIT_MEM_MAP_FAILED (1<<6) /* 06: Mapping to
> SPA failed */
> >
> > /* 2: Interleave Structure */
> >
> > diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index
> > db46546..140886e 100644
> > --- a/include/acpi/actypes.h
> > +++ b/include/acpi/actypes.h
> > @@ -630,7 +630,8 @@ typedef u64 acpi_integer;
> > #define ACPI_NOTIFY_SHUTDOWN_REQUEST (u8) 0x0C
> > #define ACPI_NOTIFY_AFFINITY_UPDATE (u8) 0x0D
> >
> > -#define ACPI_NOTIFY_MAX 0x0D
> > +#define ACPI_GENERIC_NOTIFY_MAX 0x0D
> > +#define ACPI_SPECIFIC_NOTIFY_MAX 0x84
> >
> > /*
> > * Types associated with ACPI names and objects. The first group of
> >
>
> Harb
> --
> Qualcomm Technologies, Inc.
> on behalf of Qualcomm Innovation Center, Inc.
> Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux
> Foundation Collaborative Project

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