pcnet: Move BCR defines to header

This moves BCR defines to the common header and immediately makes use of
them to add BCR_APROMWE, replacing the open-coded write check in
pcnet_aprom_writeb.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

hw/pcnet-pci.c

@@ -56,9 +56,9 @@ static void pcnet_aprom_writeb(void *opaque, uint32_t addr, uint32_t val)
 #ifdef PCNET_DEBUG
     printf("pcnet_aprom_writeb addr=0x%08x val=0x%02x\n", addr, val);
 #endif
-    /* Check APROMWE bit to enable write access */
-    if (pcnet_bcr_readw(s,2) & 0x100)
+    if (BCR_APROMWE(s)) {
         s->prom[addr & 15] = val;
+    }
 }
 
 static uint32_t pcnet_aprom_readb(void *opaque, uint32_t addr)

hw/pcnet.c

@@ -58,24 +58,6 @@ struct qemu_ether_header {
     uint16_t ether_type;
 };
 
-/* BUS CONFIGURATION REGISTERS */
-#define BCR_MSRDA    0
-#define BCR_MSWRA    1
-#define BCR_MC       2
-#define BCR_LNKST    4
-#define BCR_LED1     5
-#define BCR_LED2     6
-#define BCR_LED3     7
-#define BCR_FDC      9
-#define BCR_BSBC     18
-#define BCR_EECAS    19
-#define BCR_SWS      20
-#define BCR_PLAT     22
-
-#define BCR_DWIO(S)      !!((S)->bcr[BCR_BSBC] & 0x0080)
-#define BCR_SSIZE32(S)   !!((S)->bcr[BCR_SWS ] & 0x0100)
-#define BCR_SWSTYLE(S)     ((S)->bcr[BCR_SWS ] & 0x00FF)
-
 #define CSR_INIT(S)      !!(((S)->csr[0])&0x0001)
 #define CSR_STRT(S)      !!(((S)->csr[0])&0x0002)
 #define CSR_STOP(S)      !!(((S)->csr[0])&0x0004)

hw/pcnet.h

@@ -6,6 +6,25 @@
 
 #include "memory.h"
 
+/* BUS CONFIGURATION REGISTERS */
+#define BCR_MSRDA    0
+#define BCR_MSWRA    1
+#define BCR_MC       2
+#define BCR_LNKST    4
+#define BCR_LED1     5
+#define BCR_LED2     6
+#define BCR_LED3     7
+#define BCR_FDC      9
+#define BCR_BSBC     18
+#define BCR_EECAS    19
+#define BCR_SWS      20
+#define BCR_PLAT     22
+
+#define BCR_APROMWE(S)   !!((S)->bcr[BCR_MC  ] & 0x0100)
+#define BCR_DWIO(S)      !!((S)->bcr[BCR_BSBC] & 0x0080)
+#define BCR_SSIZE32(S)   !!((S)->bcr[BCR_SWS ] & 0x0100)
+#define BCR_SWSTYLE(S)     ((S)->bcr[BCR_SWS ] & 0x00FF)
+
 typedef struct PCNetState_st PCNetState;
 
 struct PCNetState_st {