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ACPI updates for 4.18-rc1 

These update the ACPICA code in the kernel to the 20180508 upstream
 revision and make it support the RT patch, add CPPC v3 support to the
 ACPI CPPC library, add a WDAT-based watchdog quirk to prevent clashes
 with the RTC, add quirks to the ACPI AC and battery drivers, and
 update the ACPI SoC drivers.
 
 Specifics:
 
  - Update the ACPICA code in the kernel to the 20180508 upstream
    revision including:
    * iASL -tc option enhancement (Bob Moore).
    * Debugger improvements (Bob Moore).
    * Support for tables larger than 1 MB in acpidump/acpixtract
      (Bob Moore).
    * Minor fixes and cleanups (Colin Ian King, Toomas Soome).
 
  - Make the ACPICA code in the kernel support the RT patch (Sebastian
    Andrzej Siewior, Steven Rostedt).
 
  - Add a kmemleak annotation to the ACPICA code (Larry Finger).
 
  - Add CPPC v3 support to the ACPI CPPC library and fix two issues
    related to CPPC (Prashanth Prakash, Al Stone).
 
  - Add an ACPI WDAT-based watchdog quirk to prefer iTCO_wdt on
    systems where WDAT clashes with the RTC SRAM (Mika Westerberg).
 
  - Add some quirks to the ACPI AC and battery drivers (Carlo Caione,
    Hans de Goede).
 
  - Update the ACPI SoC drivers for Intel (LPSS) and AMD (APD)
    platforms (Akshu Agrawal, Hans de Goede).
 
  - Fix up some assorted minor issues (Al Stone, Laszlo Toth,
    Mathieu Malaterre).
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Merge tag 'acpi-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "These update the ACPICA code in the kernel to the 20180508 upstream
  revision and make it support the RT patch, add CPPC v3 support to the
  ACPI CPPC library, add a WDAT-based watchdog quirk to prevent clashes
  with the RTC, add quirks to the ACPI AC and battery drivers, and
  update the ACPI SoC drivers.

  Specifics:

   - Update the ACPICA code in the kernel to the 20180508 upstream
     revision including:
       * iASL -tc option enhancement (Bob Moore).
       * Debugger improvements (Bob Moore).
       * Support for tables larger than 1 MB in acpidump/acpixtract (Bob
         Moore).
       * Minor fixes and cleanups (Colin Ian King, Toomas Soome).

   - Make the ACPICA code in the kernel support the RT patch (Sebastian
     Andrzej Siewior, Steven Rostedt).

   - Add a kmemleak annotation to the ACPICA code (Larry Finger).

   - Add CPPC v3 support to the ACPI CPPC library and fix two issues
     related to CPPC (Prashanth Prakash, Al Stone).

   - Add an ACPI WDAT-based watchdog quirk to prefer iTCO_wdt on systems
     where WDAT clashes with the RTC SRAM (Mika Westerberg).

   - Add some quirks to the ACPI AC and battery drivers (Carlo Caione,
     Hans de Goede).

   - Update the ACPI SoC drivers for Intel (LPSS) and AMD (APD)
     platforms (Akshu Agrawal, Hans de Goede).

   - Fix up some assorted minor issues (Al Stone, Laszlo Toth, Mathieu
     Malaterre)"

* tag 'acpi-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits)
  ACPICA: Mark acpi_ut_create_internal_object_dbg() memory allocations as non-leaks
  ACPI / watchdog: Prefer iTCO_wdt always when WDAT table uses RTC SRAM
  mailbox: PCC: erroneous error message when parsing ACPI PCCT
  ACPICA: Update version to 20180508
  ACPICA: acpidump/acpixtract: Support for tables larger than 1MB
  ACPI: APD: Add AMD misc clock handler support
  clk: x86: Add ST oscout platform clock
  ACPICA: Update version to 20180427
  ACPICA: Debugger: Removed direct support for EC address space in "Test Objects"
  ACPICA: Debugger: Add Package support for "test objects" command
  ACPICA: Improve error messages for the namespace root node
  ACPICA: Fix potential infinite loop in acpi_rs_dump_byte_list
  ACPICA: vsnprintf: this statement may fall through
  ACPICA: Tables: Fix spelling mistake in comment
  ACPICA: iASL: Enhance the -tc option (create AML hex file in C)
  ACPI: Add missing prototype_for arch_post_acpi_subsys_init()
  ACPI / tables: improve comments regarding acpi_parse_entries_array()
  ACPICA: Convert acpi_gbl_hardware lock back to an acpi_raw_spinlock
  ACPICA: provide abstraction for raw_spinlock_t
  ACPI / CPPC: Fix invalid PCC channel status errors
  ...
This commit is contained in:
Linus Torvalds 2018-06-05 10:08:27 -07:00
parent 3c89adb0d1 2448d1399b
commit f4fe74cc90
36 changed files with 751 additions and 194 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

69
Documentation/acpi/cppc_sysfs.txt Normal file
View File

@ -0,0 +1,69 @@
Collaborative Processor Performance Control (CPPC)
CPPC defined in the ACPI spec describes a mechanism for the OS to manage the
performance of a logical processor on a contigious and abstract performance
scale. CPPC exposes a set of registers to describe abstract performance scale,
to request performance levels and to measure per-cpu delivered performance.
For more details on CPPC please refer to the ACPI specification at:
http://uefi.org/specifications
Some of the CPPC registers are exposed via sysfs under:
/sys/devices/system/cpu/cpuX/acpi_cppc/
for each cpu X
--------------------------------------------------------------------------------
$ ls -lR /sys/devices/system/cpu/cpu0/acpi_cppc/
/sys/devices/system/cpu/cpu0/acpi_cppc/:
total 0
-r--r--r-- 1 root root 65536 Mar 5 19:38 feedback_ctrs
-r--r--r-- 1 root root 65536 Mar 5 19:38 highest_perf
-r--r--r-- 1 root root 65536 Mar 5 19:38 lowest_freq
-r--r--r-- 1 root root 65536 Mar 5 19:38 lowest_nonlinear_perf
-r--r--r-- 1 root root 65536 Mar 5 19:38 lowest_perf
-r--r--r-- 1 root root 65536 Mar 5 19:38 nominal_freq
-r--r--r-- 1 root root 65536 Mar 5 19:38 nominal_perf
-r--r--r-- 1 root root 65536 Mar 5 19:38 reference_perf
-r--r--r-- 1 root root 65536 Mar 5 19:38 wraparound_time
--------------------------------------------------------------------------------
* highest_perf : Highest performance of this processor (abstract scale).
* nominal_perf : Highest sustained performance of this processor (abstract scale).
* lowest_nonlinear_perf : Lowest performance of this processor with nonlinear
power savings (abstract scale).
* lowest_perf : Lowest performance of this processor (abstract scale).
* lowest_freq : CPU frequency corresponding to lowest_perf (in MHz).
* nominal_freq : CPU frequency corresponding to nominal_perf (in MHz).
The above frequencies should only be used to report processor performance in
freqency instead of abstract scale. These values should not be used for any
functional decisions.
* feedback_ctrs : Includes both Reference and delivered performance counter.
Reference counter ticks up proportional to processor's reference performance.
Delivered counter ticks up proportional to processor's delivered performance.
* wraparound_time: Minimum time for the feedback counters to wraparound (seconds).
* reference_perf : Performance level at which reference performance counter
accumulates (abstract scale).
--------------------------------------------------------------------------------
Computing Average Delivered Performance
Below describes the steps to compute the average performance delivered by taking
two different snapshots of feedback counters at time T1 and T2.
T1: Read feedback_ctrs as fbc_t1
Wait or run some workload
T2: Read feedback_ctrs as fbc_t2
delivered_counter_delta = fbc_t2[del] - fbc_t1[del]
reference_counter_delta = fbc_t2[ref] - fbc_t1[ref]
delivered_perf = (refernce_perf x delivered_counter_delta) / reference_counter_delta

48
drivers/acpi/ac.c
View File

@ -86,6 +86,7 @@ extern void *acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir);
static int ac_sleep_before_get_state_ms;
static int ac_check_pmic = 1;
static struct acpi_driver acpi_ac_driver = {
.name = "ac",
@ -293,21 +294,43 @@ static int acpi_ac_battery_notify(struct notifier_block *nb,
return NOTIFY_OK;
}
static int thinkpad_e530_quirk(const struct dmi_system_id *d)
static int __init thinkpad_e530_quirk(const struct dmi_system_id *d)
{
ac_sleep_before_get_state_ms = 1000;
return 0;
}
static const struct dmi_system_id ac_dmi_table[] = {
static int __init ac_do_not_check_pmic_quirk(const struct dmi_system_id *d)
{
ac_check_pmic = 0;
return 0;
}
static const struct dmi_system_id ac_dmi_table[] __initconst = {
{
/* Thinkpad e530 */
.callback = thinkpad_e530_quirk,
.ident = "thinkpad e530",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_NAME, "32597CG"),
},
},
{
/* ECS EF20EA */
.callback = ac_do_not_check_pmic_quirk,
.matches = {
DMI_MATCH(DMI_PRODUCT_NAME, "EF20EA"),
},
},
{
/* Lenovo Ideapad Miix 320 */
.callback = ac_do_not_check_pmic_quirk,
.matches = {
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80XF"),
DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
},
},
{},
};
@ -367,7 +390,6 @@ end:
kfree(ac);
}
dmi_check_system(ac_dmi_table);
return result;
}
@ -425,13 +447,17 @@ static int __init acpi_ac_init(void)
if (acpi_disabled)
return -ENODEV;
for (i = 0; i < ARRAY_SIZE(acpi_ac_blacklist); i++)
if (acpi_dev_present(acpi_ac_blacklist[i].hid, "1",
acpi_ac_blacklist[i].hrv)) {
pr_info(PREFIX "AC: found native %s PMIC, not loading\n",
acpi_ac_blacklist[i].hid);
return -ENODEV;
}
dmi_check_system(ac_dmi_table);
if (ac_check_pmic) {
for (i = 0; i < ARRAY_SIZE(acpi_ac_blacklist); i++)
if (acpi_dev_present(acpi_ac_blacklist[i].hid, "1",
acpi_ac_blacklist[i].hrv)) {
pr_info(PREFIX "AC: found native %s PMIC, not loading\n",
acpi_ac_blacklist[i].hid);
return -ENODEV;
}
}
#ifdef CONFIG_ACPI_PROCFS_POWER
acpi_ac_dir = acpi_lock_ac_dir();

47
drivers/acpi/acpi_apd.c
View File

@ -11,6 +11,7 @@
*/
#include <linux/clk-provider.h>
#include <linux/platform_data/clk-st.h>
#include <linux/platform_device.h>
#include <linux/pm_domain.h>
#include <linux/clkdev.h>
@ -72,6 +73,47 @@ static int acpi_apd_setup(struct apd_private_data *pdata)
}
#ifdef CONFIG_X86_AMD_PLATFORM_DEVICE
static int misc_check_res(struct acpi_resource *ares, void *data)
{
struct resource res;
return !acpi_dev_resource_memory(ares, &res);
}
static int st_misc_setup(struct apd_private_data *pdata)
{
struct acpi_device *adev = pdata->adev;
struct platform_device *clkdev;
struct st_clk_data *clk_data;
struct resource_entry *rentry;
struct list_head resource_list;
int ret;
clk_data = devm_kzalloc(&adev->dev, sizeof(*clk_data), GFP_KERNEL);
if (!clk_data)
return -ENOMEM;
INIT_LIST_HEAD(&resource_list);
ret = acpi_dev_get_resources(adev, &resource_list, misc_check_res,
NULL);
if (ret < 0)
return -ENOENT;
list_for_each_entry(rentry, &resource_list, node) {
clk_data->base = devm_ioremap(&adev->dev, rentry->res->start,
resource_size(rentry->res));
break;
}
acpi_dev_free_resource_list(&resource_list);
clkdev = platform_device_register_data(&adev->dev, "clk-st",
PLATFORM_DEVID_NONE, clk_data,
sizeof(*clk_data));
return PTR_ERR_OR_ZERO(clkdev);
}
static const struct apd_device_desc cz_i2c_desc = {
.setup = acpi_apd_setup,
.fixed_clk_rate = 133000000,
@ -94,6 +136,10 @@ static const struct apd_device_desc cz_uart_desc = {
.fixed_clk_rate = 48000000,
.properties = uart_properties,
};
static const struct apd_device_desc st_misc_desc = {
.setup = st_misc_setup,
};
#endif
#ifdef CONFIG_ARM64
@ -179,6 +225,7 @@ static const struct acpi_device_id acpi_apd_device_ids[] = {
{ "AMD0020", APD_ADDR(cz_uart_desc) },
{ "AMDI0020", APD_ADDR(cz_uart_desc) },
{ "AMD0030", },
{ "AMD0040", APD_ADDR(st_misc_desc)},
#endif
#ifdef CONFIG_ARM64
{ "APMC0D0F", APD_ADDR(xgene_i2c_desc) },

6
drivers/acpi/acpi_lpss.c
View File

@ -69,6 +69,10 @@ ACPI_MODULE_NAME("acpi_lpss");
#define LPSS_SAVE_CTX BIT(4)
#define LPSS_NO_D3_DELAY BIT(5)
/* Crystal Cove PMIC shares same ACPI ID between different platforms */
#define BYT_CRC_HRV 2
#define CHT_CRC_HRV 3
struct lpss_private_data;
struct lpss_device_desc {
@ -162,7 +166,7 @@ static void byt_pwm_setup(struct lpss_private_data *pdata)
if (!adev->pnp.unique_id || strcmp(adev->pnp.unique_id, "1"))
return;
if (!acpi_dev_present("INT33FD", NULL, -1))
if (!acpi_dev_present("INT33FD", NULL, BYT_CRC_HRV))
pwm_add_table(byt_pwm_lookup, ARRAY_SIZE(byt_pwm_lookup));
}

72
drivers/acpi/acpi_watchdog.c
View File

@ -12,35 +12,51 @@
#define pr_fmt(fmt) "ACPI: watchdog: " fmt
#include <linux/acpi.h>
#include <linux/dmi.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include "internal.h"
static const struct dmi_system_id acpi_watchdog_skip[] = {
{
/*
* On Lenovo Z50-70 there are two issues with the WDAT
* table. First some of the instructions use RTC SRAM
* to store persistent information. This does not work well
* with Linux RTC driver. Second, more important thing is
* that the instructions do not actually reset the system.
*
* On this particular system iTCO_wdt seems to work just
* fine so we prefer that over WDAT for now.
*
* See also https://bugzilla.kernel.org/show_bug.cgi?id=199033.
*/
.ident = "Lenovo Z50-70",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_NAME, "20354"),
DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Z50-70"),
},
},
{}
};
#ifdef CONFIG_RTC_MC146818_LIB
#include <linux/mc146818rtc.h>
/*
* There are several systems where the WDAT table is accessing RTC SRAM to
* store persistent information. This does not work well with the Linux RTC
* driver so on those systems we skip WDAT driver and prefer iTCO_wdt
* instead.
*
* See also https://bugzilla.kernel.org/show_bug.cgi?id=199033.
*/
static bool acpi_watchdog_uses_rtc(const struct acpi_table_wdat *wdat)
{
const struct acpi_wdat_entry *entries;
int i;
entries = (struct acpi_wdat_entry *)(wdat + 1);
for (i = 0; i < wdat->entries; i++) {
const struct acpi_generic_address *gas;
gas = &entries[i].register_region;
if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_IO) {
switch (gas->address) {
case RTC_PORT(0):
case RTC_PORT(1):
case RTC_PORT(2):
case RTC_PORT(3):
return true;
}
}
}
return false;
}
#else
static bool acpi_watchdog_uses_rtc(const struct acpi_table_wdat *wdat)
{
return false;
}
#endif
static const struct acpi_table_wdat *acpi_watchdog_get_wdat(void)
{
@ -50,9 +66,6 @@ static const struct acpi_table_wdat *acpi_watchdog_get_wdat(void)
if (acpi_disabled)
return NULL;
if (dmi_check_system(acpi_watchdog_skip))
return NULL;
status = acpi_get_table(ACPI_SIG_WDAT, 0,
(struct acpi_table_header **)&wdat);
if (ACPI_FAILURE(status)) {
@ -60,6 +73,11 @@ static const struct acpi_table_wdat *acpi_watchdog_get_wdat(void)
return NULL;
}
if (acpi_watchdog_uses_rtc(wdat)) {
pr_info("Skipping WDAT on this system because it uses RTC SRAM\n");
return NULL;
}
return wdat;
}

2
drivers/acpi/acpica/acapps.h
View File

@ -143,6 +143,8 @@ acpi_status
fl_split_input_pathname(char *input_path,
char **out_directory_path, char **out_filename);
char *fl_get_file_basename(char *file_pathname);
char *ad_generate_filename(char *prefix, char *table_id);
void

2
drivers/acpi/acpica/acglobal.h
View File

@ -82,7 +82,7 @@ ACPI_GLOBAL(u8, acpi_gbl_global_lock_pending);
* interrupt level
*/
ACPI_GLOBAL(acpi_spinlock, acpi_gbl_gpe_lock); /* For GPE data structs and registers */
ACPI_GLOBAL(acpi_spinlock, acpi_gbl_hardware_lock); /* For ACPI H/W except GPE registers */
ACPI_GLOBAL(acpi_raw_spinlock, acpi_gbl_hardware_lock); /* For ACPI H/W except GPE registers */
ACPI_GLOBAL(acpi_spinlock, acpi_gbl_reference_count_lock);
/* Mutex for _OSI support */

12
drivers/acpi/acpica/dbnames.c
View File

@ -189,9 +189,15 @@ void acpi_db_dump_namespace(char *start_arg, char *depth_arg)
}
acpi_db_set_output_destination(ACPI_DB_DUPLICATE_OUTPUT);
acpi_os_printf("ACPI Namespace (from %4.4s (%p) subtree):\n",
((struct acpi_namespace_node *)subtree_entry)->name.
ascii, subtree_entry);
if (((struct acpi_namespace_node *)subtree_entry)->parent) {
acpi_os_printf("ACPI Namespace (from %4.4s (%p) subtree):\n",
((struct acpi_namespace_node *)subtree_entry)->
name.ascii, subtree_entry);
} else {
acpi_os_printf("ACPI Namespace (from %s):\n",
ACPI_NAMESPACE_ROOT);
}
/* Display the subtree */

59
drivers/acpi/acpica/dbtest.c
View File

@ -30,6 +30,8 @@ acpi_db_test_buffer_type(struct acpi_namespace_node *node, u32 bit_length);
static acpi_status
acpi_db_test_string_type(struct acpi_namespace_node *node, u32 byte_length);
static acpi_status acpi_db_test_package_type(struct acpi_namespace_node *node);
static acpi_status
acpi_db_read_from_object(struct acpi_namespace_node *node,
acpi_object_type expected_type,
@ -273,6 +275,11 @@ acpi_db_test_one_object(acpi_handle obj_handle,
bit_length = byte_length * 8;
break;
case ACPI_TYPE_PACKAGE:
local_type = ACPI_TYPE_PACKAGE;
break;
case ACPI_TYPE_FIELD_UNIT:
case ACPI_TYPE_BUFFER_FIELD:
case ACPI_TYPE_LOCAL_REGION_FIELD:
@ -305,6 +312,7 @@ acpi_db_test_one_object(acpi_handle obj_handle,
acpi_os_printf("%14s: %4.4s",
acpi_ut_get_type_name(node->type), node->name.ascii);
if (!obj_desc) {
acpi_os_printf(" Ignoring, no attached object\n");
return (AE_OK);
@ -322,14 +330,13 @@ acpi_db_test_one_object(acpi_handle obj_handle,
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
case ACPI_ADR_SPACE_SYSTEM_IO:
case ACPI_ADR_SPACE_PCI_CONFIG:
case ACPI_ADR_SPACE_EC:
break;
default:
acpi_os_printf
(" %s space is not supported [%4.4s]\n",
(" %s space is not supported in this command [%4.4s]\n",
acpi_ut_get_region_name(region_obj->region.
space_id),
region_obj->region.node->name.ascii);
@ -359,6 +366,11 @@ acpi_db_test_one_object(acpi_handle obj_handle,
status = acpi_db_test_buffer_type(node, bit_length);
break;
case ACPI_TYPE_PACKAGE:
status = acpi_db_test_package_type(node);
break;
default:
acpi_os_printf(" Ignoring, type not implemented (%2.2X)",
@ -366,6 +378,13 @@ acpi_db_test_one_object(acpi_handle obj_handle,
break;
}
/* Exit on error, but don't abort the namespace walk */
if (ACPI_FAILURE(status)) {
status = AE_OK;
goto exit;
}
switch (node->type) {
case ACPI_TYPE_LOCAL_REGION_FIELD:
@ -373,12 +392,14 @@ acpi_db_test_one_object(acpi_handle obj_handle,
acpi_os_printf(" (%s)",
acpi_ut_get_region_name(region_obj->region.
space_id));
break;
default:
break;
}
exit:
acpi_os_printf("\n");
return (status);
}
@ -431,7 +452,6 @@ acpi_db_test_integer_type(struct acpi_namespace_node *node, u32 bit_length)
if (temp1->integer.value == value_to_write) {
value_to_write = 0;
}
/* Write a new value */
write_value.type = ACPI_TYPE_INTEGER;
@ -706,6 +726,35 @@ exit:
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_test_package_type
*
* PARAMETERS: node - Parent NS node for the object
*
* RETURN: Status
*
* DESCRIPTION: Test read for a Package object.
*
******************************************************************************/
static acpi_status acpi_db_test_package_type(struct acpi_namespace_node *node)
{
union acpi_object *temp1 = NULL;
acpi_status status;
/* Read the original value */
status = acpi_db_read_from_object(node, ACPI_TYPE_PACKAGE, &temp1);
if (ACPI_FAILURE(status)) {
return (status);
}
acpi_os_printf(" %8.8X Elements", temp1->package.count);
acpi_os_free(temp1);
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_db_read_from_object
@ -746,8 +795,8 @@ acpi_db_read_from_object(struct acpi_namespace_node *node,
acpi_gbl_method_executing = TRUE;
status = acpi_evaluate_object(read_handle, NULL,
&param_objects, &return_obj);
acpi_gbl_method_executing = FALSE;
acpi_gbl_method_executing = FALSE;
if (ACPI_FAILURE(status)) {
acpi_os_printf("Could not read from object, %s",
acpi_format_exception(status));
@ -760,6 +809,7 @@ acpi_db_read_from_object(struct acpi_namespace_node *node,
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_PACKAGE:
/*
* Did we receive the type we wanted? Most important for the
* Integer/Buffer case (when a field is larger than an Integer,
@ -771,6 +821,7 @@ acpi_db_read_from_object(struct acpi_namespace_node *node,
acpi_ut_get_type_name(expected_type),
acpi_ut_get_type_name(ret_value->type));
acpi_os_free(return_obj.pointer);
return (AE_TYPE);
}

8
drivers/acpi/acpica/dswscope.c
View File

@ -115,7 +115,7 @@ acpi_ds_scope_stack_push(struct acpi_namespace_node *node,
acpi_ut_get_type_name(old_scope_info->
common.value)));
} else {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "[\\___] (%s)", "ROOT"));
ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, ACPI_NAMESPACE_ROOT));
}
ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC,
@ -166,14 +166,14 @@ acpi_status acpi_ds_scope_stack_pop(struct acpi_walk_state *walk_state)
new_scope_info = walk_state->scope_info;
if (new_scope_info) {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC,
"[%4.4s] (%s)\n",
ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "[%4.4s] (%s)\n",
acpi_ut_get_node_name(new_scope_info->
scope.node),
acpi_ut_get_type_name(new_scope_info->
common.value)));
} else {
ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "[\\___] (ROOT)\n"));
ACPI_DEBUG_PRINT_RAW((ACPI_DB_EXEC, "%s\n",
ACPI_NAMESPACE_ROOT));
}
acpi_ut_delete_generic_state(scope_info);

4
drivers/acpi/acpica/hwregs.c
View File

@ -390,14 +390,14 @@ acpi_status acpi_hw_clear_acpi_status(void)
ACPI_BITMASK_ALL_FIXED_STATUS,
ACPI_FORMAT_UINT64(acpi_gbl_xpm1a_status.address)));
lock_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock);
lock_flags = acpi_os_acquire_raw_lock(acpi_gbl_hardware_lock);
/* Clear the fixed events in PM1 A/B */
status = acpi_hw_register_write(ACPI_REGISTER_PM1_STATUS,
ACPI_BITMASK_ALL_FIXED_STATUS);
acpi_os_release_lock(acpi_gbl_hardware_lock, lock_flags);
acpi_os_release_raw_lock(acpi_gbl_hardware_lock, lock_flags);
if (ACPI_FAILURE(status)) {
goto exit;

4
drivers/acpi/acpica/hwxface.c
View File

@ -227,7 +227,7 @@ acpi_status acpi_write_bit_register(u32 register_id, u32 value)
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
lock_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock);
lock_flags = acpi_os_acquire_raw_lock(acpi_gbl_hardware_lock);
/*
* At this point, we know that the parent register is one of the
@ -288,7 +288,7 @@ acpi_status acpi_write_bit_register(u32 register_id, u32 value)
unlock_and_exit:
acpi_os_release_lock(acpi_gbl_hardware_lock, lock_flags);
acpi_os_release_raw_lock(acpi_gbl_hardware_lock, lock_flags);
return_ACPI_STATUS(status);
}

2
drivers/acpi/acpica/rsdump.c
View File

@ -539,7 +539,7 @@ static void acpi_rs_out_title(const char *title)
static void acpi_rs_dump_byte_list(u16 length, u8 * data)
{
u8 i;
u16 i;
for (i = 0; i < length; i++) {
acpi_os_printf("%25s%2.2X : %2.2X\n", "Byte", i, data[i]);

2
drivers/acpi/acpica/tbinstal.c
View File

@ -88,7 +88,7 @@ acpi_tb_install_table_with_override(struct acpi_table_desc *new_table_desc,
* DESCRIPTION: This function is called to verify and install an ACPI table.
* When this function is called by "Load" or "LoadTable" opcodes,
* or by acpi_load_table() API, the "Reload" parameter is set.
* After sucessfully returning from this function, table is
* After successfully returning from this function, table is
* "INSTALLED" but not "VALIDATED".
*
******************************************************************************/

4
drivers/acpi/acpica/utbuffer.c
View File

@ -53,7 +53,7 @@ void acpi_ut_dump_buffer(u8 *buffer, u32 count, u32 display, u32 base_offset)
/* Print current offset */
acpi_os_printf("%6.4X: ", (base_offset + i));
acpi_os_printf("%8.4X: ", (base_offset + i));
/* Print 16 hex chars */
@ -219,7 +219,7 @@ acpi_ut_dump_buffer_to_file(ACPI_FILE file,
/* Print current offset */
fprintf(file, "%6.4X: ", (base_offset + i));
fprintf(file, "%8.4X: ", (base_offset + i));
/* Print 16 hex chars */

4
drivers/acpi/acpica/utmutex.c
View File

@ -52,7 +52,7 @@ acpi_status acpi_ut_mutex_initialize(void)
return_ACPI_STATUS (status);
}
status = acpi_os_create_lock (&acpi_gbl_hardware_lock);
status = acpi_os_create_raw_lock(&acpi_gbl_hardware_lock);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
@ -109,7 +109,7 @@ void acpi_ut_mutex_terminate(void)
/* Delete the spinlocks */
acpi_os_delete_lock(acpi_gbl_gpe_lock);
acpi_os_delete_lock(acpi_gbl_hardware_lock);
acpi_os_delete_raw_lock(acpi_gbl_hardware_lock);
acpi_os_delete_lock(acpi_gbl_reference_count_lock);
/* Delete the reader/writer lock */

2
drivers/acpi/acpica/utobject.c
View File

@ -8,6 +8,7 @@
*****************************************************************************/
#include <acpi/acpi.h>
#include <linux/kmemleak.h>
#include "accommon.h"
#include "acnamesp.h"
@ -70,6 +71,7 @@ union acpi_operand_object *acpi_ut_create_internal_object_dbg(const char
if (!object) {
return_PTR(NULL);
}
kmemleak_not_leak(object);
switch (type) {
case ACPI_TYPE_REGION:

1
drivers/acpi/acpica/utprint.c
View File

@ -470,6 +470,7 @@ int vsnprintf(char *string, acpi_size size, const char *format, va_list args)
case 'X':
type |= ACPI_FORMAT_UPPER;
/* FALLTHROUGH */
case 'x':

2
drivers/acpi/acpica/utstring.c
View File

@ -141,7 +141,7 @@ void acpi_ut_repair_name(char *name)
* Special case for the root node. This can happen if we get an
* error during the execution of module-level code.
*/
if (ACPI_COMPARE_NAME(name, "\\___")) {
if (ACPI_COMPARE_NAME(name, ACPI_ROOT_PATHNAME)) {
return;
}

81
drivers/acpi/battery.c
View File

@ -74,6 +74,8 @@ static async_cookie_t async_cookie;
static bool battery_driver_registered;
static int battery_bix_broken_package;
static int battery_notification_delay_ms;
static int battery_ac_is_broken;
static int battery_check_pmic = 1;
static unsigned int cache_time = 1000;
module_param(cache_time, uint, 0644);
MODULE_PARM_DESC(cache_time, "cache time in milliseconds");
@ -207,6 +209,20 @@ static bool acpi_battery_is_degraded(struct acpi_battery *battery)
battery->full_charge_capacity < battery->design_capacity;
}
static int acpi_battery_handle_discharging(struct acpi_battery *battery)
{
/*
* Some devices wrongly report discharging if the battery's charge level
* was above the device's start charging threshold atm the AC adapter
* was plugged in and the device thus did not start a new charge cycle.
*/
if ((battery_ac_is_broken || power_supply_is_system_supplied()) &&
battery->rate_now == 0)
return POWER_SUPPLY_STATUS_NOT_CHARGING;
return POWER_SUPPLY_STATUS_DISCHARGING;
}
static int acpi_battery_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
@ -222,7 +238,7 @@ static int acpi_battery_get_property(struct power_supply *psy,
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
if (battery->state & ACPI_BATTERY_STATE_DISCHARGING)
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
val->intval = acpi_battery_handle_discharging(battery);
else if (battery->state & ACPI_BATTERY_STATE_CHARGING)
val->intval = POWER_SUPPLY_STATUS_CHARGING;
else if (acpi_battery_is_charged(battery))
@ -1263,23 +1279,64 @@ battery_notification_delay_quirk(const struct dmi_system_id *d)
return 0;
}
static int __init
battery_ac_is_broken_quirk(const struct dmi_system_id *d)
{
battery_ac_is_broken = 1;
return 0;
}
static int __init
battery_do_not_check_pmic_quirk(const struct dmi_system_id *d)
{
battery_check_pmic = 0;
return 0;
}
static const struct dmi_system_id bat_dmi_table[] __initconst = {
{
/* NEC LZ750/LS */
.callback = battery_bix_broken_package_quirk,
.ident = "NEC LZ750/LS",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "NEC"),
DMI_MATCH(DMI_PRODUCT_NAME, "PC-LZ750LS"),
},
},
{
/* Acer Aspire V5-573G */
.callback = battery_notification_delay_quirk,
.ident = "Acer Aspire V5-573G",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire V5-573G"),
},
},
{
/* Point of View mobii wintab p800w */
.callback = battery_ac_is_broken_quirk,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
DMI_MATCH(DMI_BIOS_VERSION, "3BAIR1013"),
/* Above matches are too generic, add bios-date match */
DMI_MATCH(DMI_BIOS_DATE, "08/22/2014"),
},
},
{
/* ECS EF20EA */
.callback = battery_do_not_check_pmic_quirk,
.matches = {
DMI_MATCH(DMI_PRODUCT_NAME, "EF20EA"),
},
},
{
/* Lenovo Ideapad Miix 320 */
.callback = battery_do_not_check_pmic_quirk,
.matches = {
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80XF"),
DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
},
},
{},
};
@ -1419,16 +1476,18 @@ static void __init acpi_battery_init_async(void *unused, async_cookie_t cookie)
unsigned int i;
int result;
for (i = 0; i < ARRAY_SIZE(acpi_battery_blacklist); i++)
if (acpi_dev_present(acpi_battery_blacklist[i], "1", -1)) {
pr_info(PREFIX ACPI_BATTERY_DEVICE_NAME
": found native %s PMIC, not loading\n",
acpi_battery_blacklist[i]);
return;
}
dmi_check_system(bat_dmi_table);
if (battery_check_pmic) {
for (i = 0; i < ARRAY_SIZE(acpi_battery_blacklist); i++)
if (acpi_dev_present(acpi_battery_blacklist[i], "1", -1)) {
pr_info(PREFIX ACPI_BATTERY_DEVICE_NAME
": found native %s PMIC, not loading\n",
acpi_battery_blacklist[i]);
return;
}
}
#ifdef CONFIG_ACPI_PROCFS_POWER
acpi_battery_dir = acpi_lock_battery_dir();
if (!acpi_battery_dir)

159
drivers/acpi/cppc_acpi.c
View File

@ -39,6 +39,7 @@
#include <linux/cpufreq.h>
#include <linux/delay.h>
#include <linux/iopoll.h>
#include <linux/ktime.h>
#include <linux/rwsem.h>
#include <linux/wait.h>
@ -49,7 +50,7 @@ struct cppc_pcc_data {
struct mbox_chan *pcc_channel;
void __iomem *pcc_comm_addr;
bool pcc_channel_acquired;
ktime_t deadline;
unsigned int deadline_us;
unsigned int pcc_mpar, pcc_mrtt, pcc_nominal;
bool pending_pcc_write_cmd; /* Any pending/batched PCC write cmds? */
@ -156,6 +157,9 @@ show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, highest_perf);
show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, lowest_perf);
show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, nominal_perf);
show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, lowest_nonlinear_perf);
show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, lowest_freq);
show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, nominal_freq);
show_cppc_data(cppc_get_perf_ctrs, cppc_perf_fb_ctrs, reference_perf);
show_cppc_data(cppc_get_perf_ctrs, cppc_perf_fb_ctrs, wraparound_time);
@ -183,6 +187,8 @@ static struct attribute *cppc_attrs[] = {
&lowest_perf.attr,
&lowest_nonlinear_perf.attr,
&nominal_perf.attr,
&nominal_freq.attr,
&lowest_freq.attr,
NULL
};
@ -193,42 +199,31 @@ static struct kobj_type cppc_ktype = {
static int check_pcc_chan(int pcc_ss_id, bool chk_err_bit)
{
int ret = -EIO, status = 0;
int ret, status;
struct cppc_pcc_data *pcc_ss_data = pcc_data[pcc_ss_id];
struct acpi_pcct_shared_memory __iomem *generic_comm_base =
pcc_ss_data->pcc_comm_addr;
ktime_t next_deadline = ktime_add(ktime_get(),
pcc_ss_data->deadline);
if (!pcc_ss_data->platform_owns_pcc)
return 0;
/* Retry in case the remote processor was too slow to catch up. */
while (!ktime_after(ktime_get(), next_deadline)) {
/*
* Per spec, prior to boot the PCC space wil be initialized by
* platform and should have set the command completion bit when
* PCC can be used by OSPM
*/
status = readw_relaxed(&generic_comm_base->status);
if (status & PCC_CMD_COMPLETE_MASK) {
ret = 0;
if (chk_err_bit && (status & PCC_ERROR_MASK))
ret = -EIO;
break;
}
/*
* Reducing the bus traffic in case this loop takes longer than
* a few retries.
*/
udelay(3);
/*
* Poll PCC status register every 3us(delay_us) for maximum of
* deadline_us(timeout_us) until PCC command complete bit is set(cond)
*/
ret = readw_relaxed_poll_timeout(&generic_comm_base->status, status,
status & PCC_CMD_COMPLETE_MASK, 3,
pcc_ss_data->deadline_us);
if (likely(!ret)) {
pcc_ss_data->platform_owns_pcc = false;
if (chk_err_bit && (status & PCC_ERROR_MASK))
ret = -EIO;
}
if (likely(!ret))
pcc_ss_data->platform_owns_pcc = false;
else
pr_err("PCC check channel failed for ss: %d. Status=%x\n",
pcc_ss_id, status);
if (unlikely(ret))
pr_err("PCC check channel failed for ss: %d. ret=%d\n",
pcc_ss_id, ret);
return ret;
}
@ -580,7 +575,7 @@ static int register_pcc_channel(int pcc_ss_idx)
* So add an arbitrary amount of wait on top of Nominal.
*/
usecs_lat = NUM_RETRIES * cppc_ss->latency;
pcc_data[pcc_ss_idx]->deadline = ns_to_ktime(usecs_lat * NSEC_PER_USEC);
pcc_data[pcc_ss_idx]->deadline_us = usecs_lat;
pcc_data[pcc_ss_idx]->pcc_mrtt = cppc_ss->min_turnaround_time;
pcc_data[pcc_ss_idx]->pcc_mpar = cppc_ss->max_access_rate;
pcc_data[pcc_ss_idx]->pcc_nominal = cppc_ss->latency;
@ -613,7 +608,6 @@ bool __weak cpc_ffh_supported(void)
return false;
}
/**
* pcc_data_alloc() - Allocate the pcc_data memory for pcc subspace
*
@ -641,6 +635,34 @@ int pcc_data_alloc(int pcc_ss_id)
return 0;
}
/* Check if CPPC revision + num_ent combination is supported */
static bool is_cppc_supported(int revision, int num_ent)
{
int expected_num_ent;
switch (revision) {
case CPPC_V2_REV:
expected_num_ent = CPPC_V2_NUM_ENT;
break;
case CPPC_V3_REV:
expected_num_ent = CPPC_V3_NUM_ENT;
break;
default:
pr_debug("Firmware exports unsupported CPPC revision: %d\n",
revision);
return false;
}
if (expected_num_ent != num_ent) {
pr_debug("Firmware exports %d entries. Expected: %d for CPPC rev:%d\n",
num_ent, expected_num_ent, revision);
return false;
}
return true;
}
/*
* An example CPC table looks like the following.
*
@ -731,14 +753,6 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
cpc_obj->type);
goto out_free;
}
/* Only support CPPCv2. Bail otherwise. */
if (num_ent != CPPC_NUM_ENT) {
pr_debug("Firmware exports %d entries. Expected: %d\n",
num_ent, CPPC_NUM_ENT);
goto out_free;
}
cpc_ptr->num_entries = num_ent;
/* Second entry should be revision. */
@ -750,12 +764,10 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
cpc_obj->type);
goto out_free;
}
cpc_ptr->version = cpc_rev;
if (cpc_rev != CPPC_REV) {
pr_debug("Firmware exports revision:%d. Expected:%d\n",
cpc_rev, CPPC_REV);
if (!is_cppc_supported(cpc_rev, num_ent))
goto out_free;
}
/* Iterate through remaining entries in _CPC */
for (i = 2; i < num_ent; i++) {
@ -808,6 +820,18 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
}
}
per_cpu(cpu_pcc_subspace_idx, pr->id) = pcc_subspace_id;
/*
* Initialize the remaining cpc_regs as unsupported.
* Example: In case FW exposes CPPC v2, the below loop will initialize
* LOWEST_FREQ and NOMINAL_FREQ regs as unsupported
*/
for (i = num_ent - 2; i < MAX_CPC_REG_ENT; i++) {
cpc_ptr->cpc_regs[i].type = ACPI_TYPE_INTEGER;
cpc_ptr->cpc_regs[i].cpc_entry.int_value = 0;
}
/* Store CPU Logical ID */
cpc_ptr->cpu_id = pr->id;
@ -1037,26 +1061,34 @@ int cppc_get_perf_caps(int cpunum, struct cppc_perf_caps *perf_caps)
{
struct cpc_desc *cpc_desc = per_cpu(cpc_desc_ptr, cpunum);
struct cpc_register_resource *highest_reg, *lowest_reg,
*lowest_non_linear_reg, *nominal_reg;
u64 high, low, nom, min_nonlinear;
*lowest_non_linear_reg, *nominal_reg,
*low_freq_reg = NULL, *nom_freq_reg = NULL;
u64 high, low, nom, min_nonlinear, low_f = 0, nom_f = 0;
int pcc_ss_id = per_cpu(cpu_pcc_subspace_idx, cpunum);
struct cppc_pcc_data *pcc_ss_data;
struct cppc_pcc_data *pcc_ss_data = NULL;
int ret = 0, regs_in_pcc = 0;
if (!cpc_desc || pcc_ss_id < 0) {
if (!cpc_desc) {
pr_debug("No CPC descriptor for CPU:%d\n", cpunum);
return -ENODEV;
}
pcc_ss_data = pcc_data[pcc_ss_id];
highest_reg = &cpc_desc->cpc_regs[HIGHEST_PERF];
lowest_reg = &cpc_desc->cpc_regs[LOWEST_PERF];
lowest_non_linear_reg = &cpc_desc->cpc_regs[LOW_NON_LINEAR_PERF];
nominal_reg = &cpc_desc->cpc_regs[NOMINAL_PERF];
low_freq_reg = &cpc_desc->cpc_regs[LOWEST_FREQ];
nom_freq_reg = &cpc_desc->cpc_regs[NOMINAL_FREQ];
/* Are any of the regs PCC ?*/
if (CPC_IN_PCC(highest_reg) || CPC_IN_PCC(lowest_reg) ||
CPC_IN_PCC(lowest_non_linear_reg) || CPC_IN_PCC(nominal_reg)) {
CPC_IN_PCC(lowest_non_linear_reg) || CPC_IN_PCC(nominal_reg) ||
CPC_IN_PCC(low_freq_reg) || CPC_IN_PCC(nom_freq_reg)) {
if (pcc_ss_id < 0) {
pr_debug("Invalid pcc_ss_id\n");
return -ENODEV;
}
pcc_ss_data = pcc_data[pcc_ss_id];
regs_in_pcc = 1;
down_write(&pcc_ss_data->pcc_lock);
/* Ring doorbell once to update PCC subspace */
@ -1081,6 +1113,17 @@ int cppc_get_perf_caps(int cpunum, struct cppc_perf_caps *perf_caps)
if (!high || !low || !nom || !min_nonlinear)
ret = -EFAULT;
/* Read optional lowest and nominal frequencies if present */
if (CPC_SUPPORTED(low_freq_reg))
cpc_read(cpunum, low_freq_reg, &low_f);
if (CPC_SUPPORTED(nom_freq_reg))
cpc_read(cpunum, nom_freq_reg, &nom_f);
perf_caps->lowest_freq = low_f;
perf_caps->nominal_freq = nom_f;
out_err:
if (regs_in_pcc)
up_write(&pcc_ss_data->pcc_lock);
@ -1101,16 +1144,15 @@ int cppc_get_perf_ctrs(int cpunum, struct cppc_perf_fb_ctrs *perf_fb_ctrs)
struct cpc_register_resource *delivered_reg, *reference_reg,
*ref_perf_reg, *ctr_wrap_reg;
int pcc_ss_id = per_cpu(cpu_pcc_subspace_idx, cpunum);
struct cppc_pcc_data *pcc_ss_data;
struct cppc_pcc_data *pcc_ss_data = NULL;
u64 delivered, reference, ref_perf, ctr_wrap_time;
int ret = 0, regs_in_pcc = 0;
if (!cpc_desc || pcc_ss_id < 0) {
if (!cpc_desc) {
pr_debug("No CPC descriptor for CPU:%d\n", cpunum);
return -ENODEV;
}
pcc_ss_data = pcc_data[pcc_ss_id];
delivered_reg = &cpc_desc->cpc_regs[DELIVERED_CTR];
reference_reg = &cpc_desc->cpc_regs[REFERENCE_CTR];
ref_perf_reg = &cpc_desc->cpc_regs[REFERENCE_PERF];
@ -1126,6 +1168,11 @@ int cppc_get_perf_ctrs(int cpunum, struct cppc_perf_fb_ctrs *perf_fb_ctrs)
/* Are any of the regs PCC ?*/
if (CPC_IN_PCC(delivered_reg) || CPC_IN_PCC(reference_reg) ||
CPC_IN_PCC(ctr_wrap_reg) || CPC_IN_PCC(ref_perf_reg)) {
if (pcc_ss_id < 0) {
pr_debug("Invalid pcc_ss_id\n");
return -ENODEV;
}
pcc_ss_data = pcc_data[pcc_ss_id];
down_write(&pcc_ss_data->pcc_lock);
regs_in_pcc = 1;
/* Ring doorbell once to update PCC subspace */
@ -1176,15 +1223,14 @@ int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls)
struct cpc_desc *cpc_desc = per_cpu(cpc_desc_ptr, cpu);
struct cpc_register_resource *desired_reg;
int pcc_ss_id = per_cpu(cpu_pcc_subspace_idx, cpu);
struct cppc_pcc_data *pcc_ss_data;
struct cppc_pcc_data *pcc_ss_data = NULL;
int ret = 0;
if (!cpc_desc || pcc_ss_id < 0) {
if (!cpc_desc) {
pr_debug("No CPC descriptor for CPU:%d\n", cpu);
return -ENODEV;
}
pcc_ss_data = pcc_data[pcc_ss_id];
desired_reg = &cpc_desc->cpc_regs[DESIRED_PERF];
/*
@ -1195,6 +1241,11 @@ int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls)
* achieve that goal here
*/
if (CPC_IN_PCC(desired_reg)) {
if (pcc_ss_id < 0) {
pr_debug("Invalid pcc_ss_id\n");
return -ENODEV;
}
pcc_ss_data = pcc_data[pcc_ss_id];
down_read(&pcc_ss_data->pcc_lock); /* BEGIN Phase-I */
if (pcc_ss_data->platform_owns_pcc) {
ret = check_pcc_chan(pcc_ss_id, false);

4
drivers/acpi/reboot.c
View File

@ -8,8 +8,8 @@ void acpi_reboot(void)
{
struct acpi_generic_address *rr;
struct pci_bus *bus0;
u8 reset_value;
unsigned int devfn;
u8 reset_value;
if (acpi_disabled)
return;
@ -40,7 +40,7 @@ void acpi_reboot(void)
/* Form PCI device/function pair. */
devfn = PCI_DEVFN((rr->address >> 32) & 0xffff,
(rr->address >> 16) & 0xffff);
printk(KERN_DEBUG "Resetting with ACPI PCI RESET_REG.");
printk(KERN_DEBUG "Resetting with ACPI PCI RESET_REG.\n");
/* Write the value that resets us. */
pci_bus_write_config_byte(bus0, devfn,
(rr->address & 0xffff), reset_value);

9
drivers/acpi/tables.c
View File

@ -222,7 +222,7 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
* acpi_parse_entries_array - for each proc_num find a suitable subtable
*
* @id: table id (for debugging purposes)
* @table_size: single entry size
* @table_size: size of the root table
* @table_header: where does the table start?
* @proc: array of acpi_subtable_proc struct containing entry id
* and associated handler with it
@ -233,6 +233,11 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
* on it. Assumption is that there's only single handler for particular
* entry id.
*
* The table_size is not the size of the complete ACPI table (the length
* field in the header struct), but only the size of the root table; i.e.,
* the offset from the very first byte of the complete ACPI table, to the
* first byte of the very first subtable.
*
* On success returns sum of all matching entries for all proc handlers.
* Otherwise, -ENODEV or -EINVAL is returned.
*/
@ -400,7 +405,7 @@ int __init acpi_table_parse(char *id, acpi_tbl_table_handler handler)
return -ENODEV;
}
/*
/*
* The BIOS is supposed to supply a single APIC/MADT,
* but some report two. Provide a knob to use either.
* (don't you wish instance 0 and 1 were not the same?)

3
drivers/clk/x86/Makefile
View File

@ -1,3 +1,4 @@
obj-$(CONFIG_PMC_ATOM) += clk-pmc-atom.o
obj-$(CONFIG_X86_AMD_PLATFORM_DEVICE) += clk-st.o
clk-x86-lpss-objs := clk-lpt.o
obj-$(CONFIG_X86_INTEL_LPSS) += clk-x86-lpss.o
obj-$(CONFIG_PMC_ATOM) += clk-pmc-atom.o

77
drivers/clk/x86/clk-st.c Normal file
View File

@ -0,0 +1,77 @@
// SPDX-License-Identifier: MIT
/*
* clock framework for AMD Stoney based clocks
*
* Copyright 2018 Advanced Micro Devices, Inc.
*/
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/clk-provider.h>
#include <linux/platform_data/clk-st.h>
#include <linux/platform_device.h>
/* Clock Driving Strength 2 register */
#define CLKDRVSTR2 0x28
/* Clock Control 1 register */
#define MISCCLKCNTL1 0x40
/* Auxiliary clock1 enable bit */
#define OSCCLKENB 2
/* 25Mhz auxiliary output clock freq bit */
#define OSCOUT1CLK25MHZ 16
#define ST_CLK_48M 0
#define ST_CLK_25M 1
#define ST_CLK_MUX 2
#define ST_CLK_GATE 3
#define ST_MAX_CLKS 4
static const char * const clk_oscout1_parents[] = { "clk48MHz", "clk25MHz" };
static struct clk_hw *hws[ST_MAX_CLKS];
static int st_clk_probe(struct platform_device *pdev)
{
struct st_clk_data *st_data;
st_data = dev_get_platdata(&pdev->dev);
if (!st_data || !st_data->base)
return -EINVAL;
hws[ST_CLK_48M] = clk_hw_register_fixed_rate(NULL, "clk48MHz", NULL, 0,
48000000);
hws[ST_CLK_25M] = clk_hw_register_fixed_rate(NULL, "clk25MHz", NULL, 0,
25000000);
hws[ST_CLK_MUX] = clk_hw_register_mux(NULL, "oscout1_mux",
clk_oscout1_parents, ARRAY_SIZE(clk_oscout1_parents),
0, st_data->base + CLKDRVSTR2, OSCOUT1CLK25MHZ, 3, 0, NULL);
clk_set_parent(hws[ST_CLK_MUX]->clk, hws[ST_CLK_25M]->clk);
hws[ST_CLK_GATE] = clk_hw_register_gate(NULL, "oscout1", "oscout1_mux",
0, st_data->base + MISCCLKCNTL1, OSCCLKENB,
CLK_GATE_SET_TO_DISABLE, NULL);
clk_hw_register_clkdev(hws[ST_CLK_GATE], "oscout1", NULL);
return 0;
}
static int st_clk_remove(struct platform_device *pdev)
{
int i;
for (i = 0; i < ST_MAX_CLKS; i++)
clk_hw_unregister(hws[i]);
return 0;
}
static struct platform_driver st_clk_driver = {
.driver = {
.name = "clk-st",
.suppress_bind_attrs = true,
},
.probe = st_clk_probe,
.remove = st_clk_remove,
};
builtin_platform_driver(st_clk_driver);

80
drivers/cpufreq/cppc_cpufreq.c
View File

@ -42,9 +42,6 @@
*/
static struct cppc_cpudata **all_cpu_data;
/* Capture the max KHz from DMI */
static u64 cppc_dmi_max_khz;
/* Callback function used to retrieve the max frequency from DMI */
static void cppc_find_dmi_mhz(const struct dmi_header *dm, void *private)
{
@ -75,6 +72,64 @@ static u64 cppc_get_dmi_max_khz(void)
return (1000 * mhz);
}
/*
* If CPPC lowest_freq and nominal_freq registers are exposed then we can
* use them to convert perf to freq and vice versa
*
* If the perf/freq point lies between Nominal and Lowest, we can treat
* (Low perf, Low freq) and (Nom Perf, Nom freq) as 2D co-ordinates of a line
* and extrapolate the rest
* For perf/freq > Nominal, we use the ratio perf:freq at Nominal for conversion
*/
static unsigned int cppc_cpufreq_perf_to_khz(struct cppc_cpudata *cpu,
unsigned int perf)
{
static u64 max_khz;
struct cppc_perf_caps *caps = &cpu->perf_caps;
u64 mul, div;
if (caps->lowest_freq && caps->nominal_freq) {
if (perf >= caps->nominal_perf) {
mul = caps->nominal_freq;
div = caps->nominal_perf;
} else {
mul = caps->nominal_freq - caps->lowest_freq;
div = caps->nominal_perf - caps->lowest_perf;
}
} else {
if (!max_khz)
max_khz = cppc_get_dmi_max_khz();
mul = max_khz;
div = cpu->perf_caps.highest_perf;
}
return (u64)perf * mul / div;
}
static unsigned int cppc_cpufreq_khz_to_perf(struct cppc_cpudata *cpu,
unsigned int freq)
{
static u64 max_khz;
struct cppc_perf_caps *caps = &cpu->perf_caps;
u64 mul, div;
if (caps->lowest_freq && caps->nominal_freq) {
if (freq >= caps->nominal_freq) {
mul = caps->nominal_perf;
div = caps->nominal_freq;
} else {
mul = caps->lowest_perf;
div = caps->lowest_freq;
}
} else {
if (!max_khz)
max_khz = cppc_get_dmi_max_khz();
mul = cpu->perf_caps.highest_perf;
div = max_khz;
}
return (u64)freq * mul / div;
}
static int cppc_cpufreq_set_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
@ -86,7 +141,7 @@ static int cppc_cpufreq_set_target(struct cpufreq_policy *policy,
cpu = all_cpu_data[policy->cpu];
desired_perf = (u64)target_freq * cpu->perf_caps.highest_perf / cppc_dmi_max_khz;
desired_perf = cppc_cpufreq_khz_to_perf(cpu, target_freq);
/* Return if it is exactly the same perf */
if (desired_perf == cpu->perf_ctrls.desired_perf)
return ret;
@ -186,24 +241,24 @@ static int cppc_cpufreq_cpu_init(struct cpufreq_policy *policy)
return ret;
}
cppc_dmi_max_khz = cppc_get_dmi_max_khz();
/* Convert the lowest and nominal freq from MHz to KHz */
cpu->perf_caps.lowest_freq *= 1000;
cpu->perf_caps.nominal_freq *= 1000;
/*
* Set min to lowest nonlinear perf to avoid any efficiency penalty (see
* Section 8.4.7.1.1.5 of ACPI 6.1 spec)
*/
policy->min = cpu->perf_caps.lowest_nonlinear_perf * cppc_dmi_max_khz /
cpu->perf_caps.highest_perf;
policy->max = cppc_dmi_max_khz;
policy->min = cppc_cpufreq_perf_to_khz(cpu, cpu->perf_caps.lowest_nonlinear_perf);
policy->max = cppc_cpufreq_perf_to_khz(cpu, cpu->perf_caps.highest_perf);
/*
* Set cpuinfo.min_freq to Lowest to make the full range of performance
* available if userspace wants to use any perf between lowest & lowest
* nonlinear perf
*/
policy->cpuinfo.min_freq = cpu->perf_caps.lowest_perf * cppc_dmi_max_khz /
cpu->perf_caps.highest_perf;
policy->cpuinfo.max_freq = cppc_dmi_max_khz;
policy->cpuinfo.min_freq = cppc_cpufreq_perf_to_khz(cpu, cpu->perf_caps.lowest_perf);
policy->cpuinfo.max_freq = cppc_cpufreq_perf_to_khz(cpu, cpu->perf_caps.highest_perf);
policy->transition_delay_us = cppc_cpufreq_get_transition_delay_us(cpu_num);
policy->shared_type = cpu->shared_type;
@ -229,7 +284,8 @@ static int cppc_cpufreq_cpu_init(struct cpufreq_policy *policy)
cpu->cur_policy = policy;
/* Set policy->cur to max now. The governors will adjust later. */
policy->cur = cppc_dmi_max_khz;
policy->cur = cppc_cpufreq_perf_to_khz(cpu,
cpu->perf_caps.highest_perf);
cpu->perf_ctrls.desired_perf = cpu->perf_caps.highest_perf;
ret = cppc_set_perf(cpu_num, &cpu->perf_ctrls);

81
drivers/mailbox/pcc.c
View File

@ -373,33 +373,24 @@ static const struct mbox_chan_ops pcc_chan_ops = {
};
/**
* parse_pcc_subspace - Parse the PCC table and verify PCC subspace
* entries. There should be one entry per PCC client.
* parse_pcc_subspaces -- Count PCC subspaces defined
* @header: Pointer to the ACPI subtable header under the PCCT.
* @end: End of subtable entry.
*
* Return: 0 for Success, else errno.
* Return: If we find a PCC subspace entry of a valid type, return 0.
* Otherwise, return -EINVAL.
*
* This gets called for each entry in the PCC table.
*/
static int parse_pcc_subspace(struct acpi_subtable_header *header,
const unsigned long end)
{
struct acpi_pcct_hw_reduced *pcct_ss;
struct acpi_pcct_subspace *ss = (struct acpi_pcct_subspace *) header;
if (pcc_mbox_ctrl.num_chans <= MAX_PCC_SUBSPACES) {
pcct_ss = (struct acpi_pcct_hw_reduced *) header;
if (ss->header.type < ACPI_PCCT_TYPE_RESERVED)
return 0;
if ((pcct_ss->header.type !=
ACPI_PCCT_TYPE_HW_REDUCED_SUBSPACE)
&& (pcct_ss->header.type !=
ACPI_PCCT_TYPE_HW_REDUCED_SUBSPACE_TYPE2)) {
pr_err("Incorrect PCC Subspace type detected\n");
return -EINVAL;
}
}
return 0;
return -EINVAL;
}
/**
@ -449,8 +440,8 @@ static int __init acpi_pcc_probe(void)
struct acpi_table_header *pcct_tbl;
struct acpi_subtable_header *pcct_entry;
struct acpi_table_pcct *acpi_pcct_tbl;
struct acpi_subtable_proc proc[ACPI_PCCT_TYPE_RESERVED];
int count, i, rc;
int sum = 0;
acpi_status status = AE_OK;
/* Search for PCCT */
@ -459,43 +450,41 @@ static int __init acpi_pcc_probe(void)
if (ACPI_FAILURE(status) || !pcct_tbl)
return -ENODEV;
count = acpi_table_parse_entries(ACPI_SIG_PCCT,
sizeof(struct acpi_table_pcct),
ACPI_PCCT_TYPE_HW_REDUCED_SUBSPACE,
parse_pcc_subspace, MAX_PCC_SUBSPACES);
sum += (count > 0) ? count : 0;
/* Set up the subtable handlers */
for (i = ACPI_PCCT_TYPE_GENERIC_SUBSPACE;
i < ACPI_PCCT_TYPE_RESERVED; i++) {
proc[i].id = i;
proc[i].count = 0;
proc[i].handler = parse_pcc_subspace;
}
count = acpi_table_parse_entries(ACPI_SIG_PCCT,
sizeof(struct acpi_table_pcct),
ACPI_PCCT_TYPE_HW_REDUCED_SUBSPACE_TYPE2,
parse_pcc_subspace, MAX_PCC_SUBSPACES);
sum += (count > 0) ? count : 0;
if (sum == 0 || sum >= MAX_PCC_SUBSPACES) {
pr_err("Error parsing PCC subspaces from PCCT\n");
count = acpi_table_parse_entries_array(ACPI_SIG_PCCT,
sizeof(struct acpi_table_pcct), proc,
ACPI_PCCT_TYPE_RESERVED, MAX_PCC_SUBSPACES);
if (count == 0 || count > MAX_PCC_SUBSPACES) {
pr_warn("Invalid PCCT: %d PCC subspaces\n", count);
return -EINVAL;
}
pcc_mbox_channels = kzalloc(sizeof(struct mbox_chan) *
sum, GFP_KERNEL);
pcc_mbox_channels = kzalloc(sizeof(struct mbox_chan) * count, GFP_KERNEL);
if (!pcc_mbox_channels) {
pr_err("Could not allocate space for PCC mbox channels\n");
return -ENOMEM;
}
pcc_doorbell_vaddr = kcalloc(sum, sizeof(void *), GFP_KERNEL);
pcc_doorbell_vaddr = kcalloc(count, sizeof(void *), GFP_KERNEL);
if (!pcc_doorbell_vaddr) {
rc = -ENOMEM;
goto err_free_mbox;
}
pcc_doorbell_ack_vaddr = kcalloc(sum, sizeof(void *), GFP_KERNEL);
pcc_doorbell_ack_vaddr = kcalloc(count, sizeof(void *), GFP_KERNEL);
if (!pcc_doorbell_ack_vaddr) {
rc = -ENOMEM;
goto err_free_db_vaddr;
}
pcc_doorbell_irq = kcalloc(sum, sizeof(int), GFP_KERNEL);
pcc_doorbell_irq = kcalloc(count, sizeof(int), GFP_KERNEL);
if (!pcc_doorbell_irq) {
rc = -ENOMEM;
goto err_free_db_ack_vaddr;
@ -509,18 +498,24 @@ static int __init acpi_pcc_probe(void)
if (acpi_pcct_tbl->flags & ACPI_PCCT_DOORBELL)
pcc_mbox_ctrl.txdone_irq = true;
for (i = 0; i < sum; i++) {
for (i = 0; i < count; i++) {
struct acpi_generic_address *db_reg;
struct acpi_pcct_hw_reduced *pcct_ss;
struct acpi_pcct_subspace *pcct_ss;
pcc_mbox_channels[i].con_priv = pcct_entry;
pcct_ss = (struct acpi_pcct_hw_reduced *) pcct_entry;
if (pcct_entry->type == ACPI_PCCT_TYPE_HW_REDUCED_SUBSPACE ||
pcct_entry->type == ACPI_PCCT_TYPE_HW_REDUCED_SUBSPACE_TYPE2) {
struct acpi_pcct_hw_reduced *pcct_hrss;
if (pcc_mbox_ctrl.txdone_irq) {
rc = pcc_parse_subspace_irq(i, pcct_ss);
if (rc < 0)
goto err;
pcct_hrss = (struct acpi_pcct_hw_reduced *) pcct_entry;
if (pcc_mbox_ctrl.txdone_irq) {
rc = pcc_parse_subspace_irq(i, pcct_hrss);
if (rc < 0)
goto err;
}
}
pcct_ss = (struct acpi_pcct_subspace *) pcct_entry;
/* If doorbell is in system memory cache the virt address */
db_reg = &pcct_ss->doorbell_register;
@ -531,7 +526,7 @@ static int __init acpi_pcc_probe(void)
((unsigned long) pcct_entry + pcct_entry->length);
}
pcc_mbox_ctrl.num_chans = sum;
pcc_mbox_ctrl.num_chans = count;
pr_info("Detected %d PCC Subspaces\n", pcc_mbox_ctrl.num_chans);

7
include/acpi/acnames.h
View File

@ -49,11 +49,14 @@
/* Definitions of the predefined namespace names */
#define ACPI_UNKNOWN_NAME (u32) 0x3F3F3F3F /* Unknown name is "????" */
#define ACPI_ROOT_NAME (u32) 0x5F5F5F5C /* Root name is "\___" */
#define ACPI_PREFIX_MIXED (u32) 0x69706341 /* "Acpi" */
#define ACPI_PREFIX_LOWER (u32) 0x69706361 /* "acpi" */
/* Root name stuff */
#define ACPI_ROOT_NAME (u32) 0x5F5F5F5C /* Root name is "\___" */
#define ACPI_ROOT_PATHNAME "\\___"
#define ACPI_NAMESPACE_ROOT "Namespace Root"
#define ACPI_NS_ROOT_PATH "\\"
#endif /* __ACNAMES_H__ */

21
include/acpi/acpiosxf.h
View File

@ -97,6 +97,27 @@ acpi_cpu_flags acpi_os_acquire_lock(acpi_spinlock handle);
void acpi_os_release_lock(acpi_spinlock handle, acpi_cpu_flags flags);
#endif
/*
* RAW spinlock primitives. If the OS does not provide them, fallback to
* spinlock primitives
*/
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_raw_lock
# define acpi_os_create_raw_lock(out_handle) acpi_os_create_lock(out_handle)
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_delete_raw_lock
# define acpi_os_delete_raw_lock(handle) acpi_os_delete_lock(handle)
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_raw_lock
# define acpi_os_acquire_raw_lock(handle) acpi_os_acquire_lock(handle)
#endif
#ifndef ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_release_raw_lock
# define acpi_os_release_raw_lock(handle, flags) \
acpi_os_release_lock(handle, flags)
#endif
/*
* Semaphore primitives
*/

2
include/acpi/acpixf.h
View File

@ -12,7 +12,7 @@
/* Current ACPICA subsystem version in YYYYMMDD format */
#define ACPI_CA_VERSION 0x20180313
#define ACPI_CA_VERSION 0x20180508
#include <acpi/acconfig.h>
#include <acpi/actypes.h>

4
include/acpi/actypes.h
View File

@ -245,6 +245,10 @@ typedef u64 acpi_physical_address;
#define acpi_spinlock void *
#endif
#ifndef acpi_raw_spinlock
#define acpi_raw_spinlock acpi_spinlock
#endif
#ifndef acpi_semaphore
#define acpi_semaphore void *
#endif

14
include/acpi/cppc_acpi.h
View File

@ -20,14 +20,16 @@
#include <acpi/pcc.h>
#include <acpi/processor.h>
/* Only support CPPCv2 for now. */
#define CPPC_NUM_ENT 21
#define CPPC_REV 2
/* Support CPPCv2 and CPPCv3 */
#define CPPC_V2_REV 2
#define CPPC_V3_REV 3
#define CPPC_V2_NUM_ENT 21
#define CPPC_V3_NUM_ENT 23
#define PCC_CMD_COMPLETE_MASK (1 << 0)
#define PCC_ERROR_MASK (1 << 2)
#define MAX_CPC_REG_ENT 19
#define MAX_CPC_REG_ENT 21
/* CPPC specific PCC commands. */
#define CMD_READ 0
@ -91,6 +93,8 @@ enum cppc_regs {
AUTO_ACT_WINDOW,
ENERGY_PERF,
REFERENCE_PERF,
LOWEST_FREQ,
NOMINAL_FREQ,
};
/*
@ -104,6 +108,8 @@ struct cppc_perf_caps {
u32 nominal_perf;
u32 lowest_perf;
u32 lowest_nonlinear_perf;
u32 lowest_freq;
u32 nominal_freq;
};
struct cppc_perf_ctrls {

5
include/acpi/platform/aclinux.h
View File

@ -102,6 +102,7 @@
#define acpi_cache_t struct kmem_cache
#define acpi_spinlock spinlock_t *
#define acpi_raw_spinlock raw_spinlock_t *
#define acpi_cpu_flags unsigned long
/* Use native linux version of acpi_os_allocate_zeroed */
@ -119,6 +120,10 @@
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_object
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_get_thread_id
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_lock
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_create_raw_lock
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_delete_raw_lock
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_acquire_raw_lock
#define ACPI_USE_ALTERNATE_PROTOTYPE_acpi_os_release_raw_lock
/*
* OSL interfaces used by debugger/disassembler

30
include/acpi/platform/aclinuxex.h
View File

@ -90,6 +90,36 @@ static inline acpi_thread_id acpi_os_get_thread_id(void)
lock ? AE_OK : AE_NO_MEMORY; \
})
#define acpi_os_create_raw_lock(__handle) \
({ \
raw_spinlock_t *lock = ACPI_ALLOCATE(sizeof(*lock)); \
if (lock) { \
*(__handle) = lock; \
raw_spin_lock_init(*(__handle)); \
} \
lock ? AE_OK : AE_NO_MEMORY; \
})
static inline acpi_cpu_flags acpi_os_acquire_raw_lock(acpi_raw_spinlock lockp)
{
acpi_cpu_flags flags;
raw_spin_lock_irqsave(lockp, flags);
return flags;
}
static inline void acpi_os_release_raw_lock(acpi_raw_spinlock lockp,
acpi_cpu_flags flags)
{
raw_spin_unlock_irqrestore(lockp, flags);
}
static inline void acpi_os_delete_raw_lock(acpi_raw_spinlock handle)
{
ACPI_FREE(handle);
}
static inline u8 acpi_os_readable(void *pointer, acpi_size length)
{
return TRUE;

1
include/linux/acpi.h
View File

@ -578,6 +578,7 @@ int acpi_match_platform_list(const struct acpi_platform_list *plat);
extern void acpi_early_init(void);
extern void acpi_subsystem_init(void);
extern void arch_post_acpi_subsys_init(void);
extern int acpi_nvs_register(__u64 start, __u64 size);

17
include/linux/platform_data/clk-st.h Normal file
View File

@ -0,0 +1,17 @@
/* SPDX-License-Identifier: MIT */
/*
* clock framework for AMD Stoney based clock
*
* Copyright 2018 Advanced Micro Devices, Inc.
*/
#ifndef __CLK_ST_H
#define __CLK_ST_H
#include <linux/compiler.h>
struct st_clk_data {
void __iomem *base;
};
#endif /* __CLK_ST_H */