[Xen-devel] [PATCH v2 14/19] hvmloader: construct SLIT

[Wei Liu <wei.liu2@xxxxxxxxxx>]

Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
Cc: Jan Beulich <JBeulich@xxxxxxxx>
---
Changes in v2:
1. Adapt to new vNUMA retrieval routine.
2. Move SLIT very late in secondary table build.
---
 tools/firmware/hvmloader/acpi/acpi2_0.h |    8 +++++++
 tools/firmware/hvmloader/acpi/build.c   |   40 ++++++++++++++++++++++++++++++-
 2 files changed, 47 insertions(+), 1 deletion(-)

diff --git a/tools/firmware/hvmloader/acpi/acpi2_0.h 
b/tools/firmware/hvmloader/acpi/acpi2_0.h
index 6169213..d698095 100644
--- a/tools/firmware/hvmloader/acpi/acpi2_0.h
+++ b/tools/firmware/hvmloader/acpi/acpi2_0.h
@@ -414,6 +414,12 @@ struct acpi_20_srat_memory {
 #define ACPI_MEM_AFFIN_HOTPLUGGABLE (1 << 1)
 #define ACPI_MEM_AFFIN_NONVOLATILE (1 << 2)
 
+struct acpi_20_slit {
+    struct acpi_header header;
+    uint64_t localities;
+    uint8_t entry[0];
+};
+
 /*
  * Table Signatures.
  */
@@ -427,6 +433,7 @@ struct acpi_20_srat_memory {
 #define ACPI_2_0_HPET_SIGNATURE ASCII32('H','P','E','T')
 #define ACPI_2_0_WAET_SIGNATURE ASCII32('W','A','E','T')
 #define ACPI_2_0_SRAT_SIGNATURE ASCII32('S','R','A','T')
+#define ACPI_2_0_SLIT_SIGNATURE ASCII32('S','L','I','T')
 
 /*
  * Table revision numbers.
@@ -441,6 +448,7 @@ struct acpi_20_srat_memory {
 #define ACPI_2_0_WAET_REVISION 0x01
 #define ACPI_1_0_FADT_REVISION 0x01
 #define ACPI_2_0_SRAT_REVISION 0x01
+#define ACPI_2_0_SLIT_REVISION 0x01
 
 #pragma pack ()
 
diff --git a/tools/firmware/hvmloader/acpi/build.c 
b/tools/firmware/hvmloader/acpi/build.c
index 917b2c9..51c737e 100644
--- a/tools/firmware/hvmloader/acpi/build.c
+++ b/tools/firmware/hvmloader/acpi/build.c
@@ -263,6 +263,38 @@ static struct acpi_20_srat *construct_srat(void)
     return srat;
 }
 
+static struct acpi_20_slit *construct_slit(void)
+{
+    struct acpi_20_slit *slit;
+    unsigned int num, size;
+    int i;
+
+    num = nr_vnodes * nr_vnodes;
+    size = sizeof(*slit) + num * sizeof(uint8_t);
+
+    slit = mem_alloc(size, 16);
+    if (!slit) return NULL;
+
+    memset(slit, 0, size);
+    slit->header.signature    = ACPI_2_0_SLIT_SIGNATURE;
+    slit->header.revision     = ACPI_2_0_SLIT_REVISION;
+    fixed_strcpy(slit->header.oem_id, ACPI_OEM_ID);
+    fixed_strcpy(slit->header.oem_table_id, ACPI_OEM_TABLE_ID);
+    slit->header.oem_revision = ACPI_OEM_REVISION;
+    slit->header.creator_id   = ACPI_CREATOR_ID;
+    slit->header.creator_revision = ACPI_CREATOR_REVISION;
+
+    for ( i = 0; i < num; i++ )
+        slit->entry[i] = vdistance[i];
+
+    slit->localities = nr_vnodes;
+
+    slit->header.length = size;
+    set_checksum(slit, offsetof(struct acpi_header, checksum), size);
+
+    return slit;
+}
+
 static int construct_passthrough_tables(unsigned long *table_ptrs,
                                         int nr_tables)
 {
@@ -318,6 +350,7 @@ static int construct_secondary_tables(unsigned long 
*table_ptrs,
     struct acpi_20_waet *waet;
     struct acpi_20_tcpa *tcpa;
     struct acpi_20_srat *srat;
+    struct acpi_20_slit *slit;
     unsigned char *ssdt;
     static const uint16_t tis_signature[] = {0x0001, 0x0001, 0x0001};
     uint16_t *tis_hdr;
@@ -407,7 +440,7 @@ static int construct_secondary_tables(unsigned long 
*table_ptrs,
         }
     }
 
-    /* SRAT */
+    /* SRAT and SLIT */
     if ( nr_vnodes > 0 )
     {
         srat = construct_srat();
@@ -415,6 +448,11 @@ static int construct_secondary_tables(unsigned long 
*table_ptrs,
             table_ptrs[nr_tables++] = (unsigned long)srat;
         else
             printf("Failed to build SRAT, skipping...\n");
+        slit = construct_slit();
+        if (srat)
+            table_ptrs[nr_tables++] = (unsigned long)slit;
+        else
+            printf("Failed to build SLIT, skipping...\n");
     }
 
     /* Load any additional tables passed through. */
-- 
1.7.10.4


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