sna: Wrap cpuid.h

More our ifdef out of line from the main code into a header file, where
we can also apply a little bit of synatic sugar.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

4 files changed, 92 insertions, 30 deletions

diff --git a/src/sna/Makefile.am b/src/sna/Makefile.am
index 56ad9365..aebbfc21 100644
--- a/src/sna/Makefile.am
+++ b/src/sna/Makefile.am
@@ -49,6 +49,7 @@ libsna_la_SOURCES = \
 	sna_blt.c \
 	sna_composite.c \
 	sna_cpu.c \
+	sna_cpuid.h \
 	sna_damage.c \
 	sna_damage.h \
 	sna_display.c \
diff --git a/src/sna/kgem.c b/src/sna/kgem.c
index 8c692659..2a8dddcd 100644
--- a/src/sna/kgem.c
+++ b/src/sna/kgem.c
@@ -50,6 +50,8 @@
 #include <sys/sysinfo.h>
 #endif
 
+#include "sna_cpuid.h"
+
 static struct kgem_bo *
 search_linear_cache(struct kgem *kgem, unsigned int num_pages, unsigned flags);
 
@@ -696,9 +698,6 @@ total_ram_size(void)
 	return 0;
 }
 
-#if HAS_GCC(4, 4) /* for __cpuid_count() */
-#include <cpuid.h>
-
 static unsigned
 cpu_cache_size__cpuid4(void)
 {
@@ -720,7 +719,7 @@ cpu_cache_size__cpuid4(void)
 	 unsigned int llc_size = 0;
 	 int cnt = 0;
 
-	 if (__get_cpuid_max(false, 0) < 4)
+	 if (__get_cpuid_max(BASIC_CPUID, NULL) < 4)
 		 return 0;
 
 	 do {
@@ -742,14 +741,6 @@ cpu_cache_size__cpuid4(void)
 	 return llc_size;
 }
 
-#else
-static unsigned
-cpu_cache_size__cpuid4(void)
-{
-	return 0;
-}
-#endif
-
 static unsigned
 cpu_cache_size(void)
 {
diff --git a/src/sna/sna_cpu.c b/src/sna/sna_cpu.c
index c96b21f0..23e6bcc0 100644
--- a/src/sna/sna_cpu.c
+++ b/src/sna/sna_cpu.c
@@ -30,14 +30,7 @@
 #endif
 
 #include "sna.h"
-
-#if HAS_GCC(4, 4)
-
-#include <cpuid.h>
-
-#ifndef bit_AVX2
-#define bit_AVX2 (1<<5)
-#endif
+#include "sna_cpuid.h"
 
 #define xgetbv(index,eax,edx)                                   \
 	__asm__ ("xgetbv" : "=a"(eax), "=d"(edx) : "c" (index))
@@ -46,7 +39,7 @@
 
 unsigned sna_cpu_detect(void)
 {
-	unsigned max = __get_cpuid_max(false, 0);
+	unsigned max = __get_cpuid_max(BASIC_CPUID, NULL);
 	unsigned int eax, ebx, ecx, edx;
 	unsigned features = 0;
 	unsigned extra = 0;
@@ -94,15 +87,6 @@ unsigned sna_cpu_detect(void)
 	return features;
 }
 
-#else
-
-unsigned sna_cpu_detect(void)
-{
-	return 0;
-}
-
-#endif
-
 char *sna_cpu_features_to_string(unsigned features, char *line)
 {
 	char *ret = line;
diff --git a/src/sna/sna_cpuid.h b/src/sna/sna_cpuid.h
new file mode 100644
index 00000000..5a82c893
--- /dev/null
+++ b/src/sna/sna_cpuid.h
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2013 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Authors:
+ *    Chris Wilson <chris@chris-wilson.co.uk>
+ *
+ */
+
+/* Small wrapper around compiler specific implementation details of cpuid */
+
+#ifndef SNA_CPUID_H
+#define SNA_CPUID_H
+
+#include "compiler.h"
+
+#if HAS_GCC(4, 4) /* for __cpuid_count() */
+#include <cpuid.h>
+#else
+#define __get_cpuid_max(x, y) 0
+#define __cpuid(level, a, b, c, d)
+#define __cpuid_count(level, count, a, b, c, d)
+#endif
+
+#define BASIC_CPUID 0x0
+#define EXTENDED_CPUID 0x80000000
+
+#ifndef bit_MMX
+#define bit_MMX		(1 << 23)
+#endif
+
+#ifndef bit_SSE
+#define bit_SSE		(1 << 25)
+#endif
+
+#ifndef bit_SSE2
+#define bit_SSE2	(1 << 26)
+#endif
+
+#ifndef bit_SSE3
+#define bit_SSE3	(1 << 0)
+#endif
+
+#ifndef bit_SSSE3
+#define bit_SSSE3	(1 << 9)
+#endif
+
+#ifndef bit_SSE4_1
+#define bit_SSE4_1	(1 << 19)
+#endif
+
+#ifndef bit_SSE4_2
+#define bit_SSE4_2	(1 << 20)
+#endif
+
+#ifndef bit_OSXSAVE
+#define bit_OSXSAVE	(1 << 27)
+#endif
+
+#ifndef bit_AVX
+#define bit_AVX		(1 << 28)
+#endif
+
+#ifndef bit_AVX2
+#define bit_AVX2	(1<<5)
+#endif
+
+#endif /* SNA_CPUID_H */