linux-kernel - [PATCH v4 1/9] ACPICA: Add additional PPTT flags for cache properties

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Date:   Thu,  9 Nov 2017 15:03:03 -0600
From:   Jeremy Linton <jeremy.linton@....com>
To:     linux-acpi@...r.kernel.org
Cc:     linux-arm-kernel@...ts.infradead.org, sudeep.holla@....com,
        hanjun.guo@...aro.org, lorenzo.pieralisi@....com,
        rjw@...ysocki.net, will.deacon@....com, catalin.marinas@....com,
        gregkh@...uxfoundation.org, viresh.kumar@...aro.org,
        mark.rutland@....com, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, jhugo@...eaurora.org,
        wangxiongfeng2@...wei.com, Jonathan.Zhang@...ium.com,
        ahs3@...hat.com, Jayachandran.Nair@...ium.com,
        austinwc@...eaurora.org, lenb@...nel.org, robert.moore@...el.com,
        lv.zheng@...el.com, devel@...ica.org,
        Jeremy Linton <jeremy.linton@....com>
Subject: [PATCH v4 1/9] ACPICA: Add additional PPTT flags for cache properties

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@....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