Add Broadcom / Netgear changes from RAXE 1.0.0.48

[project/bcm63xx/u-boot.git] / arch / arm / mach-bcmbca / rdp / bcm_pkt_lengths.h

diff --git a/arch/arm/mach-bcmbca/rdp/bcm_pkt_lengths.h b/arch/arm/mach-bcmbca/rdp/bcm_pkt_lengths.h
new file mode 100755 (executable)
index 0000000..51350ca
--- /dev/null
+++ b/arch/arm/mach-bcmbca/rdp/bcm_pkt_lengths.h
@@ -0,0 +1,147 @@
+#ifndef __BCM_PKT_LENGTHS_H__
+#define __BCM_PKT_LENGTHS_H__
+
+
+/*TODO: makesure this file compiles when not for linux kernel also */
+
+
+/* this file is used to define the packet length for All platforms and
+   features at a common place */
+#if defined(CONFIG_BCM63148) || defined(CONFIG_BCM4908) || defined(CONFIG_BCM6858) || defined(CONFIG_BCM63158) || \
+    defined(CONFIG_BCM6846)  || defined(CONFIG_BCM47189) || defined(CONFIG_BCM6856) || defined(CONFIG_BCM63178) || \
+    defined(CONFIG_BCM47622) || defined(CONFIG_BCM6878) || defined(CONFIG_BCM6756)
+
+#define BCM_DCACHE_LINE_LEN    64ul
+#define BCM_DCACHE_ALIGN_LEN   63ul
+
+#elif defined(CONFIG_BCM63138)
+
+#define BCM_DCACHE_LINE_LEN    32
+#define BCM_DCACHE_ALIGN_LEN   31
+
+#else
+
+#define BCM_DCACHE_LINE_LEN    16
+#define BCM_DCACHE_ALIGN_LEN   15
+
+#endif
+
+
+#define BCM_DCACHE_ALIGN(len)  ((len + BCM_DCACHE_ALIGN_LEN) & ~BCM_DCACHE_ALIGN_LEN)
+
+#define GREATER(x, y)  (x>y ? x:y)
+
+
+ /* ############ MAX Packet payload size ############ */
+
+/*Ethernet */
+#define ENET_MAX_MTU_PAYLOAD_SIZE  (1500)  /* Ethernet Max Payload Size */
+
+/* XTM */
+#define XTM_MAX_MTU_PAYLOAD_SIZE    1500
+
+/* WLAN */
+
+#define WLAN_MAX_MTU_PAYLOAD_SIZE (1500)
+
+#if defined(CONFIG_BCM_USER_DEFINED_DEFAULT_MTU)
+    #if (CONFIG_BCM_USER_DEFINED_DEFAULT_MTU_SIZE > ENET_MAX_MTU_PAYLOAD_SIZE)
+    #error "ERROR - CONFIG_BCM_USER_DEFINED_DEFAULT_MTU_SIZE > ENET_MAX_MTU_PAYLOAD_SIZE"
+    #endif
+    #if (CONFIG_BCM_USER_DEFINED_DEFAULT_MTU_SIZE > XTM_MAX_MTU_PAYLOAD_SIZE)
+    #error "ERROR - CONFIG_BCM_USER_DEFINED_DEFAULT_MTU_SIZE > XTM_MAX_MTU_PAYLOAD_SIZE"
+    #endif
+
+    #define BCM_ENET_DEFAULT_MTU_SIZE CONFIG_BCM_USER_DEFINED_DEFAULT_MTU_SIZE
+    #define BCM_XTM_DEFAULT_MTU_SIZE  CONFIG_BCM_USER_DEFINED_DEFAULT_MTU_SIZE
+
+#else /* !CONFIG_BCM_USER_DEFINED_DEFAULT_MTU */
+
+    #define BCM_ENET_DEFAULT_MTU_SIZE ENET_MAX_MTU_PAYLOAD_SIZE
+    #define BCM_XTM_DEFAULT_MTU_SIZE  XTM_MAX_MTU_PAYLOAD_SIZE
+
+#endif
+
+
+/* select greater of XTM, WLAN, ENET and use it as MAX payload in system
+ * for buffer allocation purpose
+ */
+
+/*TODO check if compiler is replacing these checks with a final value, if not
+ select the MAX payload manually */
+
+#define BCM_MAX_MTU_PAYLOAD_SIZE GREATER( \
+                                                               GREATER(ENET_MAX_MTU_PAYLOAD_SIZE, XTM_MAX_MTU_PAYLOAD_SIZE) \
+                                                               ,WLAN_MAX_MTU_PAYLOAD_SIZE)
+
+
+/* ############ space needed for L2 header ############ */
+#ifndef ENET_MAX_MTU_EXTRA_SIZE
+#define ENET_MAX_MTU_EXTRA_SIZE  (32) /* EH_SIZE(14) + VLANTAG(4) + VLANTAG(4) + BRCMTAG(6) + FCS(4) + Extra(??) (4)*/
+#endif
+
+/*select greater value*/
+#define BCM_MAX_MTU_EXTRA_SIZE    ENET_MAX_MTU_EXTRA_SIZE
+
+
+
+/* ############ Headroom needed in the packet ############ */
+
+/* this headroom is needed for WLAN header for  ENET,XTM,XPON ==> WLAN traffic */
+#define WLAN_TX_HEADROOM    208
+#define XTM_BONDING_HEADROOM       48
+#define GRE_HDR_LEN         16
+
+/* Headroom is a multiple of cacheline */
+#define BCM_PKT_HEADROOM  BCM_DCACHE_ALIGN(WLAN_TX_HEADROOM + GRE_HDR_LEN)
+
+
+/* ############ Tailroom needed in the packet ############ */
+
+#define BCM_SKB_TAILROOM       32
+
+/* ############ XRDP DMA Offset ############ */
+#if defined(CONFIG_BCM6858)
+#define DMA_MAX_OFFSET     128
+#else
+#define DMA_MAX_OFFSET     0   
+#endif
+
+#if defined(CONFIG_BCM47189)
+#define DMA_DATA_OFFSET 4
+#endif
+
+/* ############ Toatal length used for packets ############ */
+//#define BCM_MAX_PKT_LEN              BCM_MAX_MTU_EXTRA_SIZE + BCM_MAX_MTU_PAYLOAD_SIZE
+    /*align this to 64 bytes as Iudma may overwite, some bytes if not 64 byte aligned , bug in iudma*/
+#if defined(CONFIG_BCM_ENET_SYSPORT)
+
+    #define SYSPORT_MAX_PKT_LEN (2048)
+    #define SYSPORT_PKT_LEN_LOG2 (11)
+
+    #define CALC_MAX_PKT_LEN             ((DMA_MAX_OFFSET + BCM_MAX_MTU_EXTRA_SIZE + BCM_MAX_MTU_PAYLOAD_SIZE + 63) & ~63)
+    #if CALC_MAX_PKT_LEN > SYSPORT_MAX_PKT_LEN
+        #error "Error: CALC_MAX_PKT_LEN > SYSPORT_MAX_PKT_LEN"
+    #endif
+    #define BCM_MAX_PKT_LEN              SYSPORT_MAX_PKT_LEN
+
+#else
+/* This ignores the headroom in the BPM buffer otherwise it could be reduced.
+ It could be set to 1856 so that the headroom in the BPM buffer would be used. 
+ But to keep things simple and safe, max pkt len is assigned to PKTBUFSZ from
+ linux_osl.h */
+#define BCM_MAX_PKT_LEN               GREATER(2048, ((DMA_MAX_OFFSET + BCM_MAX_MTU_EXTRA_SIZE + BCM_MAX_MTU_PAYLOAD_SIZE + 63) & ~63))
+#endif 
+
+/* ############ Toatal buf size i.e BCM_MAX_PKT_LEN + metadata(fkb,skb_sharedinfo etc..) ############ */
+/* BCM_FKB_INPLACE, BCM_PKT_HEADROOM are always to be at cache-aligned boundaries */
+
+#define BCM_PKTBUF_SIZE             (BCM_DCACHE_ALIGN(BCM_MAX_PKT_LEN))
+
+/* ############ other common defines ############ */
+
+#define ENET_MIN_MTU_SIZE       60            /* Without FCS */
+#define ENET_MIN_MTU_SIZE_EXT_SWITCH       64            /* Without FCS */
+#define ENET_MAX_MTU_SIZE       (ENET_MAX_MTU_PAYLOAD_SIZE + ENET_MAX_MTU_EXTRA_SIZE)
+
+#endif /* __BCM_PKT_LENGTHS_H__ */