[PATCH v4 4/9] acpi: Rename ACPI_PDC constants
From: Michal Wilczynski
Date: Mon Jul 10 2023 - 10:06:49 EST
ACPI_PDC constants prefix suggest that those constants are only relevant
in the context of the _PDC method. This is not true, as they can also be
used in _OSC context. Change prefix to more generic ACPI_PROC_CAP, that
better describe the purpose of those constants as they describe bits in
processor capabilities buffer. Rename pdc_intel.h to proc_cap_intel.h to
reflect the change in the prefix.
Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Michal Wilczynski <michal.wilczynski@xxxxxxxxx>
---
arch/ia64/include/asm/acpi.h | 4 ++--
arch/x86/include/asm/acpi.h | 11 +++++-----
arch/x86/xen/enlighten_pv.c | 8 +++----
drivers/acpi/processor_pdc.c | 2 +-
include/acpi/pdc_intel.h | 36 --------------------------------
include/acpi/proc_cap_intel.h | 39 +++++++++++++++++++++++++++++++++++
6 files changed, 52 insertions(+), 48 deletions(-)
delete mode 100644 include/acpi/pdc_intel.h
create mode 100644 include/acpi/proc_cap_intel.h
diff --git a/arch/ia64/include/asm/acpi.h b/arch/ia64/include/asm/acpi.h
index 43797cb44383..58500a964238 100644
--- a/arch/ia64/include/asm/acpi.h
+++ b/arch/ia64/include/asm/acpi.h
@@ -11,7 +11,7 @@
#ifdef __KERNEL__
-#include <acpi/pdc_intel.h>
+#include <acpi/proc_cap_intel.h>
#include <linux/init.h>
#include <linux/numa.h>
@@ -71,7 +71,7 @@ extern int __initdata nid_to_pxm_map[MAX_NUMNODES];
static inline bool arch_has_acpi_pdc(void) { return true; }
static inline void arch_acpi_set_proc_cap_bits(u32 *cap)
{
- *cap |= ACPI_PDC_EST_CAPABILITY_SMP;
+ *cap |= ACPI_PROC_CAP_EST_CAPABILITY_SMP;
}
#ifdef CONFIG_ACPI_NUMA
diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h
index 6a498d1781e7..ce5ad6a496e6 100644
--- a/arch/x86/include/asm/acpi.h
+++ b/arch/x86/include/asm/acpi.h
@@ -6,7 +6,7 @@
* Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@xxxxxxxxx>
* Copyright (C) 2001 Patrick Mochel <mochel@xxxxxxxx>
*/
-#include <acpi/pdc_intel.h>
+#include <acpi/proc_cap_intel.h>
#include <asm/numa.h>
#include <asm/fixmap.h>
@@ -104,19 +104,20 @@ static inline void arch_acpi_set_proc_cap_bits(u32 *cap)
{
struct cpuinfo_x86 *c = &cpu_data(0);
- *cap |= ACPI_PDC_C_CAPABILITY_SMP;
+ *cap |= ACPI_PROC_CAP_C_CAPABILITY_SMP;
if (cpu_has(c, X86_FEATURE_EST))
- *cap |= ACPI_PDC_EST_CAPABILITY_SWSMP;
+ *cap |= ACPI_PROC_CAP_EST_CAPABILITY_SWSMP;
if (cpu_has(c, X86_FEATURE_ACPI))
- *cap |= ACPI_PDC_T_FFH;
+ *cap |= ACPI_PROC_CAP_T_FFH;
/*
* If mwait/monitor is unsupported, C2/C3_FFH will be disabled
*/
if (!cpu_has(c, X86_FEATURE_MWAIT))
- *cap &= ~(ACPI_PDC_C_C2C3_FFH);
+ *cap &= ~(ACPI_PROC_CAP_C_C2C3_FFH);
+
}
static inline bool acpi_has_cpu_in_madt(void)
diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c
index 93b658248d01..a3864e2167a8 100644
--- a/arch/x86/xen/enlighten_pv.c
+++ b/arch/x86/xen/enlighten_pv.c
@@ -79,7 +79,7 @@
#ifdef CONFIG_ACPI
#include <linux/acpi.h>
#include <asm/acpi.h>
-#include <acpi/pdc_intel.h>
+#include <acpi/proc_cap_intel.h>
#include <acpi/processor.h>
#include <xen/interface/platform.h>
#endif
@@ -288,17 +288,17 @@ static bool __init xen_check_mwait(void)
native_cpuid(&ax, &bx, &cx, &dx);
- /* Ask the Hypervisor whether to clear ACPI_PDC_C_C2C3_FFH. If so,
+ /* Ask the Hypervisor whether to clear ACPI_PROC_CAP_C_C2C3_FFH. If so,
* don't expose MWAIT_LEAF and let ACPI pick the IOPORT version of C3.
*/
buf[0] = ACPI_PDC_REVISION_ID;
buf[1] = 1;
- buf[2] = (ACPI_PDC_C_CAPABILITY_SMP | ACPI_PDC_EST_CAPABILITY_SWSMP);
+ buf[2] = (ACPI_PROC_CAP_C_CAPABILITY_SMP | ACPI_PROC_CAP_EST_CAPABILITY_SWSMP);
set_xen_guest_handle(op.u.set_pminfo.pdc, buf);
if ((HYPERVISOR_platform_op(&op) == 0) &&
- (buf[2] & (ACPI_PDC_C_C1_FFH | ACPI_PDC_C_C2C3_FFH))) {
+ (buf[2] & (ACPI_PROC_CAP_C_C1_FFH | ACPI_PROC_CAP_C_C2C3_FFH))) {
cpuid_leaf5_ecx_val = cx;
cpuid_leaf5_edx_val = dx;
}
diff --git a/drivers/acpi/processor_pdc.c b/drivers/acpi/processor_pdc.c
index b2c6f17fc87c..77d3fe73047c 100644
--- a/drivers/acpi/processor_pdc.c
+++ b/drivers/acpi/processor_pdc.c
@@ -21,7 +21,7 @@ static void acpi_set_pdc_bits(u32 *buf)
buf[1] = 1;
/* Enable coordination with firmware's _TSD info */
- buf[2] = ACPI_PDC_SMP_T_SWCOORD;
+ buf[2] = ACPI_PROC_CAP_SMP_T_SWCOORD;
/* Twiddle arch-specific bits needed for _PDC */
arch_acpi_set_proc_cap_bits(&buf[2]);
diff --git a/include/acpi/pdc_intel.h b/include/acpi/pdc_intel.h
deleted file mode 100644
index 967c552d1cd3..000000000000
--- a/include/acpi/pdc_intel.h
+++ /dev/null
@@ -1,36 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-
-/* _PDC bit definition for Intel processors */
-
-#ifndef __PDC_INTEL_H__
-#define __PDC_INTEL_H__
-
-#define ACPI_PDC_P_FFH (0x0001)
-#define ACPI_PDC_C_C1_HALT (0x0002)
-#define ACPI_PDC_T_FFH (0x0004)
-#define ACPI_PDC_SMP_C1PT (0x0008)
-#define ACPI_PDC_SMP_C2C3 (0x0010)
-#define ACPI_PDC_SMP_P_SWCOORD (0x0020)
-#define ACPI_PDC_SMP_C_SWCOORD (0x0040)
-#define ACPI_PDC_SMP_T_SWCOORD (0x0080)
-#define ACPI_PDC_C_C1_FFH (0x0100)
-#define ACPI_PDC_C_C2C3_FFH (0x0200)
-#define ACPI_PDC_SMP_P_HWCOORD (0x0800)
-
-#define ACPI_PDC_EST_CAPABILITY_SMP (ACPI_PDC_SMP_C1PT | \
- ACPI_PDC_C_C1_HALT | \
- ACPI_PDC_P_FFH)
-
-#define ACPI_PDC_EST_CAPABILITY_SWSMP (ACPI_PDC_SMP_C1PT | \
- ACPI_PDC_C_C1_HALT | \
- ACPI_PDC_SMP_P_SWCOORD | \
- ACPI_PDC_SMP_P_HWCOORD | \
- ACPI_PDC_P_FFH)
-
-#define ACPI_PDC_C_CAPABILITY_SMP (ACPI_PDC_SMP_C2C3 | \
- ACPI_PDC_SMP_C1PT | \
- ACPI_PDC_C_C1_HALT | \
- ACPI_PDC_C_C1_FFH | \
- ACPI_PDC_C_C2C3_FFH)
-
-#endif /* __PDC_INTEL_H__ */
diff --git a/include/acpi/proc_cap_intel.h b/include/acpi/proc_cap_intel.h
new file mode 100644
index 000000000000..57e5e2628abb
--- /dev/null
+++ b/include/acpi/proc_cap_intel.h
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+/* Vendor specific processor capabilities bit definition
+ * for Intel processors. Those bits are used to convey OSPM
+ * power management capabilities to the platform.
+ */
+
+#ifndef __PROC_CAP_INTEL_H__
+#define __PROC_CAP_INTEL_H__
+
+#define ACPI_PROC_CAP_P_FFH (0x0001)
+#define ACPI_PROC_CAP_C_C1_HALT (0x0002)
+#define ACPI_PROC_CAP_T_FFH (0x0004)
+#define ACPI_PROC_CAP_SMP_C1PT (0x0008)
+#define ACPI_PROC_CAP_SMP_C2C3 (0x0010)
+#define ACPI_PROC_CAP_SMP_P_SWCOORD (0x0020)
+#define ACPI_PROC_CAP_SMP_C_SWCOORD (0x0040)
+#define ACPI_PROC_CAP_SMP_T_SWCOORD (0x0080)
+#define ACPI_PROC_CAP_C_C1_FFH (0x0100)
+#define ACPI_PROC_CAP_C_C2C3_FFH (0x0200)
+#define ACPI_PROC_CAP_SMP_P_HWCOORD (0x0800)
+
+#define ACPI_PROC_CAP_EST_CAPABILITY_SMP (ACPI_PROC_CAP_SMP_C1PT | \
+ ACPI_PROC_CAP_C_C1_HALT | \
+ ACPI_PROC_CAP_P_FFH)
+
+#define ACPI_PROC_CAP_EST_CAPABILITY_SWSMP (ACPI_PROC_CAP_SMP_C1PT | \
+ ACPI_PROC_CAP_C_C1_HALT | \
+ ACPI_PROC_CAP_SMP_P_SWCOORD | \
+ ACPI_PROC_CAP_SMP_P_HWCOORD | \
+ ACPI_PROC_CAP_P_FFH)
+
+#define ACPI_PROC_CAP_C_CAPABILITY_SMP (ACPI_PROC_CAP_SMP_C2C3 | \
+ ACPI_PROC_CAP_SMP_C1PT | \
+ ACPI_PROC_CAP_C_C1_HALT | \
+ ACPI_PROC_CAP_C_C1_FFH | \
+ ACPI_PROC_CAP_C_C2C3_FFH)
+
+#endif /* __PROC_CAP_INTEL_H__ */
--
2.41.0