From: Davidlohr Bueso <dave@stgolabs.net>
To: rafael.j.wysocki@intel.com, dave.jiang@intel.com
Cc: dan.j.williams@intel.com, jonathan.cameron@huawei.com,
alejandro.lucero-palau@amd.com, ira.weiny@intel.com,
alison.schofield@intel.com, a.manzanares@samsung.com,
linux-acpi@vger.kernel.org, linux-cxl@vger.kernel.org,
linux-kernel@vger.kernel.org, Davidlohr Bueso <dave@stgolabs.net>,
"Rafael J . Wysocki" <rafael@kernel.org>
Subject: [PATCH v2] cxl/acpi: Rename CFMW coherency restrictions
Date: Mon, 8 Sep 2025 09:00:34 -0700 [thread overview]
Message-ID: <20250908160034.86471-1-dave@stgolabs.net> (raw)
ACPICA commit 710745713ad3a2543dbfb70e84764f31f0e46bdc
This has been renamed in more recent CXL specs, as
type3 (memory expanders) can also use HDM-DB for
device coherent memory.
Link: https://github.com/acpica/acpica/commit/710745713ad3a2543dbfb70e84764f31f0e46bdc
Acked-by: Rafael J. Wysocki (Intel) <rafael@kernel.org>
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
---
drivers/cxl/acpi.c | 4 ++--
include/acpi/actbl1.h | 4 ++--
tools/testing/cxl/test/cxl.c | 18 +++++++++---------
3 files changed, 13 insertions(+), 13 deletions(-)
diff --git a/drivers/cxl/acpi.c b/drivers/cxl/acpi.c
index 26c494704437..2cf75b553f26 100644
--- a/drivers/cxl/acpi.c
+++ b/drivers/cxl/acpi.c
@@ -128,9 +128,9 @@ static unsigned long cfmws_to_decoder_flags(int restrictions)
{
unsigned long flags = CXL_DECODER_F_ENABLE;
- if (restrictions & ACPI_CEDT_CFMWS_RESTRICT_TYPE2)
+ if (restrictions & ACPI_CEDT_CFMWS_RESTRICT_DEVMEM)
flags |= CXL_DECODER_F_TYPE2;
- if (restrictions & ACPI_CEDT_CFMWS_RESTRICT_TYPE3)
+ if (restrictions & ACPI_CEDT_CFMWS_RESTRICT_HOSTONLYMEM)
flags |= CXL_DECODER_F_TYPE3;
if (restrictions & ACPI_CEDT_CFMWS_RESTRICT_VOLATILE)
flags |= CXL_DECODER_F_RAM;
diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index 99fd1588ff38..eb787dfbd2fa 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -560,8 +560,8 @@ struct acpi_cedt_cfmws_target_element {
/* Values for Restrictions field above */
-#define ACPI_CEDT_CFMWS_RESTRICT_TYPE2 (1)
-#define ACPI_CEDT_CFMWS_RESTRICT_TYPE3 (1<<1)
+#define ACPI_CEDT_CFMWS_RESTRICT_DEVMEM (1)
+#define ACPI_CEDT_CFMWS_RESTRICT_HOSTONLYMEM (1<<1)
#define ACPI_CEDT_CFMWS_RESTRICT_VOLATILE (1<<2)
#define ACPI_CEDT_CFMWS_RESTRICT_PMEM (1<<3)
#define ACPI_CEDT_CFMWS_RESTRICT_FIXED (1<<4)
diff --git a/tools/testing/cxl/test/cxl.c b/tools/testing/cxl/test/cxl.c
index 6a25cca5636f..ba50338f8ada 100644
--- a/tools/testing/cxl/test/cxl.c
+++ b/tools/testing/cxl/test/cxl.c
@@ -210,7 +210,7 @@ static struct {
},
.interleave_ways = 0,
.granularity = 4,
- .restrictions = ACPI_CEDT_CFMWS_RESTRICT_TYPE3 |
+ .restrictions = ACPI_CEDT_CFMWS_RESTRICT_HOSTONLYMEM |
ACPI_CEDT_CFMWS_RESTRICT_VOLATILE,
.qtg_id = FAKE_QTG_ID,
.window_size = SZ_256M * 4UL,
@@ -225,7 +225,7 @@ static struct {
},
.interleave_ways = 1,
.granularity = 4,
- .restrictions = ACPI_CEDT_CFMWS_RESTRICT_TYPE3 |
+ .restrictions = ACPI_CEDT_CFMWS_RESTRICT_HOSTONLYMEM |
ACPI_CEDT_CFMWS_RESTRICT_VOLATILE,
.qtg_id = FAKE_QTG_ID,
.window_size = SZ_256M * 8UL,
@@ -240,7 +240,7 @@ static struct {
},
.interleave_ways = 0,
.granularity = 4,
- .restrictions = ACPI_CEDT_CFMWS_RESTRICT_TYPE3 |
+ .restrictions = ACPI_CEDT_CFMWS_RESTRICT_HOSTONLYMEM |
ACPI_CEDT_CFMWS_RESTRICT_PMEM,
.qtg_id = FAKE_QTG_ID,
.window_size = SZ_256M * 4UL,
@@ -255,7 +255,7 @@ static struct {
},
.interleave_ways = 1,
.granularity = 4,
- .restrictions = ACPI_CEDT_CFMWS_RESTRICT_TYPE3 |
+ .restrictions = ACPI_CEDT_CFMWS_RESTRICT_HOSTONLYMEM |
ACPI_CEDT_CFMWS_RESTRICT_PMEM,
.qtg_id = FAKE_QTG_ID,
.window_size = SZ_256M * 8UL,
@@ -270,7 +270,7 @@ static struct {
},
.interleave_ways = 0,
.granularity = 4,
- .restrictions = ACPI_CEDT_CFMWS_RESTRICT_TYPE3 |
+ .restrictions = ACPI_CEDT_CFMWS_RESTRICT_HOSTONLYMEM |
ACPI_CEDT_CFMWS_RESTRICT_PMEM,
.qtg_id = FAKE_QTG_ID,
.window_size = SZ_256M * 4UL,
@@ -285,7 +285,7 @@ static struct {
},
.interleave_ways = 0,
.granularity = 4,
- .restrictions = ACPI_CEDT_CFMWS_RESTRICT_TYPE3 |
+ .restrictions = ACPI_CEDT_CFMWS_RESTRICT_HOSTONLYMEM |
ACPI_CEDT_CFMWS_RESTRICT_VOLATILE,
.qtg_id = FAKE_QTG_ID,
.window_size = SZ_256M,
@@ -302,7 +302,7 @@ static struct {
.interleave_arithmetic = ACPI_CEDT_CFMWS_ARITHMETIC_XOR,
.interleave_ways = 0,
.granularity = 4,
- .restrictions = ACPI_CEDT_CFMWS_RESTRICT_TYPE3 |
+ .restrictions = ACPI_CEDT_CFMWS_RESTRICT_HOSTONLYMEM |
ACPI_CEDT_CFMWS_RESTRICT_PMEM,
.qtg_id = FAKE_QTG_ID,
.window_size = SZ_256M * 8UL,
@@ -318,7 +318,7 @@ static struct {
.interleave_arithmetic = ACPI_CEDT_CFMWS_ARITHMETIC_XOR,
.interleave_ways = 1,
.granularity = 0,
- .restrictions = ACPI_CEDT_CFMWS_RESTRICT_TYPE3 |
+ .restrictions = ACPI_CEDT_CFMWS_RESTRICT_HOSTONLYMEM |
ACPI_CEDT_CFMWS_RESTRICT_PMEM,
.qtg_id = FAKE_QTG_ID,
.window_size = SZ_256M * 8UL,
@@ -334,7 +334,7 @@ static struct {
.interleave_arithmetic = ACPI_CEDT_CFMWS_ARITHMETIC_XOR,
.interleave_ways = 8,
.granularity = 1,
- .restrictions = ACPI_CEDT_CFMWS_RESTRICT_TYPE3 |
+ .restrictions = ACPI_CEDT_CFMWS_RESTRICT_HOSTONLYMEM |
ACPI_CEDT_CFMWS_RESTRICT_PMEM,
.qtg_id = FAKE_QTG_ID,
.window_size = SZ_512M * 6UL,
--
2.39.5
next reply other threads:[~2025-09-08 19:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-08 16:00 Davidlohr Bueso [this message]
2025-09-08 20:42 ` [PATCH v2] cxl/acpi: Rename CFMW coherency restrictions Dave Jiang
2025-09-08 21:38 ` Gregory Price
2025-09-09 14:06 ` Jonathan Cameron
2025-09-09 15:20 ` Dave Jiang
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