Introduce range.h

Extract range functions from pci.h. These will be used by later patches
by non-PCI devices. Adjust current users.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

hw/acpi_piix4.c

@@ -22,6 +22,7 @@
 #include "pci.h"
 #include "acpi.h"
 #include "sysemu.h"
+#include "range.h"
 
 //#define DEBUG
 

hw/msix.c

@@ -14,6 +14,7 @@
 #include "hw.h"
 #include "msix.h"
 #include "pci.h"
+#include "range.h"
 
 /* MSI-X capability structure */
 #define MSIX_TABLE_OFFSET 4

hw/pci.c

@@ -28,6 +28,7 @@
 #include "sysemu.h"
 #include "loader.h"
 #include "qemu-objects.h"
+#include "range.h"
 
 //#define DEBUG_PCI
 #ifdef DEBUG_PCI

hw/pci.h

@@ -365,33 +365,4 @@ static inline uint32_t pci_config_size(const PCIDevice *d)
     return pci_is_express(d) ? PCIE_CONFIG_SPACE_SIZE : PCI_CONFIG_SPACE_SIZE;
 }
 
-/* These are not pci specific. Should move into a separate header.
- * Only pci.c uses them, so keep them here for now.
- */
-
-/* Get last byte of a range from offset + length.
- * Undefined for ranges that wrap around 0. */
-static inline uint64_t range_get_last(uint64_t offset, uint64_t len)
-{
-    return offset + len - 1;
-}
-
-/* Check whether a given range covers a given byte. */
-static inline int range_covers_byte(uint64_t offset, uint64_t len,
-                                    uint64_t byte)
-{
-    return offset <= byte && byte <= range_get_last(offset, len);
-}
-
-/* Check whether 2 given ranges overlap.
- * Undefined if ranges that wrap around 0. */
-static inline int ranges_overlap(uint64_t first1, uint64_t len1,
-                                 uint64_t first2, uint64_t len2)
-{
-    uint64_t last1 = range_get_last(first1, len1);
-    uint64_t last2 = range_get_last(first2, len2);
-
-    return !(last2 < first1 || last1 < first2);
-}
-
 #endif

hw/piix_pci.c

@@ -28,6 +28,7 @@
 #include "pci_host.h"
 #include "isa.h"
 #include "sysbus.h"
+#include "range.h"
 
 /*
  * I440FX chipset data sheet.

hw/vhost.c

@@ -13,8 +13,7 @@
 #include <sys/ioctl.h>
 #include "vhost.h"
 #include "hw/hw.h"
-/* For range_get_last */
-#include "pci.h"
+#include "range.h"
 #include <linux/vhost.h>
 
 static void vhost_dev_sync_region(struct vhost_dev *dev,

range.h

@@ -0,0 +1,29 @@
+#ifndef QEMU_RANGE_H
+#define QEMU_RANGE_H
+
+/* Get last byte of a range from offset + length.
+ * Undefined for ranges that wrap around 0. */
+static inline uint64_t range_get_last(uint64_t offset, uint64_t len)
+{
+    return offset + len - 1;
+}
+
+/* Check whether a given range covers a given byte. */
+static inline int range_covers_byte(uint64_t offset, uint64_t len,
+                                    uint64_t byte)
+{
+    return offset <= byte && byte <= range_get_last(offset, len);
+}
+
+/* Check whether 2 given ranges overlap.
+ * Undefined if ranges that wrap around 0. */
+static inline int ranges_overlap(uint64_t first1, uint64_t len1,
+                                 uint64_t first2, uint64_t len2)
+{
+    uint64_t last1 = range_get_last(first1, len1);
+    uint64_t last2 = range_get_last(first2, len2);
+
+    return !(last2 < first1 || last1 < first2);
+}
+
+#endif