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[RFC,v5,03/14] register: Add support for decoding information

Message ID b6f4473a724de00acc3c14e04a1d0483d967d8e3.1430169159.git.peter.crosthwaite@xilinx.com
State New
Headers show

Commit Message

Peter Crosthwaite April 27, 2015, 9:58 p.m. UTC 
Allow defining of optional address decoding information in register
definitions. This is useful for clients that want to associate
registers with specific addresses.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
---
changed since v4:
Remove extraneous unused defintions.

 include/hw/register.h | 10 ++++++++++
 1 file changed, 10 insertions(+)
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Patch

diff --git a/include/hw/register.h b/include/hw/register.h
index a3c41db..90c0185 100644
--- a/include/hw/register.h
+++ b/include/hw/register.h
@@ -54,6 +54,11 @@  typedef struct RegisterAccessError {
  * allowing this function to modify the value before return to the client.
  */
 
+#define REG_DECODE_READ (1 << 0)
+#define REG_DECODE_WRITE (1 << 1)
+#define REG_DECODE_EXECUTE (1 << 2)
+#define REG_DECODE_RW (REG_DECODE_READ | REG_DECODE_WRITE)
+
 struct RegisterAccessInfo {
     const char *name;
     uint64_t ro;
@@ -71,6 +76,11 @@  struct RegisterAccessInfo {
     void (*post_write)(RegisterInfo *reg, uint64_t val);
 
     uint64_t (*post_read)(RegisterInfo *reg, uint64_t val);
+
+    struct {
+        hwaddr addr;
+        uint8_t flags;
+    } decode;
 };
 
 /**