lkml.org 
[lkml]   [2017]   [Nov]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v4 1/9] ACPICA: Add additional PPTT flags for cache properties
Date
The PPTT table has a number of flags that can be set
to describe whether the cache is I/D/U and the allocation
and write policies. Add these flags.

Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
---
include/acpi/actbl1.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index 6b8714a428b6..71f874e2790d 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -1346,6 +1346,20 @@ struct acpi_pptt_cache {
#define ACPI_PPTT_MASK_CACHE_TYPE (0x0C) /* Cache type */
#define ACPI_PPTT_MASK_WRITE_POLICY (0x10) /* Write policy */

+/* Attributes describing cache */
+#define ACPI_PPTT_CACHE_READ_ALLOCATE (0x0) /* Cache line is allocated on read */
+#define ACPI_PPTT_CACHE_WRITE_ALLOCATE (0x01) /* Cache line is allocated on write */
+#define ACPI_PPTT_CACHE_RW_ALLOCATE (0x02) /* Cache line is allocated on read and write */
+#define ACPI_PPTT_CACHE_RW_ALLOCATE_ALT (0x03) /* Alternate representation of above */
+
+#define ACPI_PPTT_CACHE_TYPE_DATA (0x0) /* Data cache */
+#define ACPI_PPTT_CACHE_TYPE_INSTR (1<<2) /* Instruction cache */
+#define ACPI_PPTT_CACHE_TYPE_UNIFIED (2<<2) /* Unified I & D cache */
+#define ACPI_PPTT_CACHE_TYPE_UNIFIED_ALT (3<<2) /* Alternate representation of above */
+
+#define ACPI_PPTT_CACHE_POLICY_WB (0x0) /* Cache is write back */
+#define ACPI_PPTT_CACHE_POLICY_WT (1<<4) /* Cache is write through */
+
/* 2: ID Structure */

struct acpi_pptt_id {
--
2.13.5
\
 
 \ /
  Last update: 2017-11-09 22:05    [W:0.153 / U:2.132 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site