/* __attribute__ ((packed)) is required */
} __attribute__ ((packed));
-/* tsopu defines */
-#define TSO_PARAM_BUFLEN_MASK 0x3FFF
-#define TSO_PARAM_BUFLEN_SHIFT 0
-#define TSO_PARAM_DMAINT_MASK 0x0001
-#define TSO_PARAM_DMAINT_SHIFT 14
-#define TSO_PARAM_PKTNT_MASK 0x0001
-#define TSO_PARAM_PKTINT_SHIFT 15
-#define TSO_PARAM_VLANTAG_MASK 0xFFFF
-#define TSO_PARAM_VLAN_SHIFT 16
-
-/* tsopl defines */
-#define TSO_PARAM_EOP_MASK 0x0001
-#define TSO_PARAM_EOP_SHIFT 0
-#define TSO_PARAM_COALESCE_MASK 0x0001
-#define TSO_PARAM_COALESCE_SHIFT 1
-#define TSO_PARAM_INSVLAG_MASK 0x0001
-#define TSO_PARAM_INSVLAG_SHIFT 2
-#define TSO_PARAM_CUSTOMCKSUM_MASK 0x0001
-#define TSO_PARAM_CUSTOMCKSUM_SHIFT 3
-#define TSO_PARAM_SEGMENT_MASK 0x0001
-#define TSO_PARAM_SEGMENT_SHIFT 4
-#define TSO_PARAM_IPCKSUM_MASK 0x0001
-#define TSO_PARAM_IPCKSUM_SHIFT 5
-#define TSO_PARAM_TCPCKSUM_MASK 0x0001
-#define TSO_PARAM_TCPCKSUM_SHIFT 6
-#define TSO_PARAM_UDPCKSUM_MASK 0x0001
-#define TSO_PARAM_UDPCKSUM_SHIFT 7
-#define TSO_PARAM_VLANTAGGED_MASK 0x0001
-#define TSO_PARAM_VLANTAGGED_SHIFT 8
-#define TSO_PARAM_ETHTYPE_MASK 0x0001
-#define TSO_PARAM_ETHTYPE_SHIFT 9
-#define TSO_PARAM_IPHL_MASK 0x000F
-#define TSO_PARAM_IPHL_SHIFT 10
-#define TSO_PARAM_TCPHDRLEN_MASK 0x000F
-#define TSO_PARAM_TCPHDRLEN_SHIFT 14
-#define TSO_PARAM_HDRFLAG_MASK 0x0001
-#define TSO_PARAM_HDRFLAG_SHIFT 18
-#define TSO_PARAM_MSS_MASK 0x1FFF
-#define TSO_PARAM_MSS_SHIFT 19
-
-/* csumpu defines */
-#define CSUM_PARAM_BUFLEN_MASK 0x3FFF
-#define CSUM_PARAM_BUFLEN_SHIFT 0
-#define CSUM_PARAM_DMAINT_MASK 0x0001
-#define CSUM_PARAM_DMAINT_SHIFT 14
-#define CSUM_PARAM_PKTINT_MASK 0x0001
-#define CSUM_PARAM_PKTINT_SHIFT 15
-#define CSUM_PARAM_VALANTAG_MASK 0xFFFF
-#define CSUM_PARAM_VALAN_SHIFT 16
-
-/* csumpl defines*/
-#define CSUM_PARAM_EOP_MASK 0x0001
-#define CSUM_PARAM_EOP_SHIFT 0
-#define CSUM_PARAM_COALESCE_MASK 0x0001
-#define CSUM_PARAM_COALESCE_SHIFT 1
-#define CSUM_PARAM_INSVLAG_MASK 0x0001
-#define CSUM_PARAM_INSVLAG_SHIFT 2
-#define CSUM_PARAM_CUSTOMCKSUM_MASK 0x0001
-#define CSUM_PARAM_CUSTOMCKSUM_SHIFT 3
-#define CSUM_PARAM_SEGMENT_MASK 0x0001
-#define CSUM_PARAM_SEGMENT_SHIFT 4
-#define CSUM_PARAM_IPCKSUM_MASK 0x0001
-#define CSUM_PARAM_IPCKSUM_SHIFT 5
-#define CSUM_PARAM_TCPCKSUM_MASK 0x0001
-#define CSUM_PARAM_TCPCKSUM_SHIFT 6
-#define CSUM_PARAM_UDPCKSUM_MASK 0x0001
-#define CSUM_PARAM_UDPCKSUM_SHIFT 7
-#define CSUM_PARAM_VLANTAGGED_MASK 0x0001
-#define CSUM_PARAM_VLANTAGGED_SHIFT 8
-#define CSUM_PARAM_ETHTYPE_MASK 0x0001
-#define CSUM_PARAM_ETHTYPE_SHIFT 9
-#define CSUM_PARAM_IPHL_MASK 0x000F
-#define CSUM_PARAM_IPHL_SHIFT 10
-#define CSUM_PARAM_PLOADOFFSET_MASK 0x00FF
-#define CSUM_PARAM_PLOADOFFSET_SHIFT 16
-#define CSUM_PARAM_XSUMOFFSET_MASK 0x00FF
-#define CSUM_PARAM_XSUMOFFSET_SHIFT 24
-
-/* TPD descriptor */
-struct tso_param {
- /* The order of these declarations is important -- don't change it */
- u32 tsopu; /* tso_param upper word */
- u32 tsopl; /* tso_param lower word */
-};
-
-struct csum_param {
- /* The order of these declarations is important -- don't change it */
- u32 csumpu; /* csum_param upper word */
- u32 csumpl; /* csum_param lower word */
-};
+/*
+ * The L1 transmit packet descriptor is comprised of four 32-bit words.
+ *
+ * 31 0
+ * +---------------------------------------+
+ * | Word 0: Buffer addr lo |
+ * +---------------------------------------+
+ * | Word 1: Buffer addr hi |
+ * +---------------------------------------+
+ * | Word 2 |
+ * +---------------------------------------+
+ * | Word 3 |
+ * +---------------------------------------+
+ *
+ * Words 0 and 1 combine to form a 64-bit buffer address.
+ *
+ * Word 2 is self explanatory in the #define block below.
+ *
+ * Word 3 has two forms, depending upon the state of bits 3 and 4.
+ * If bits 3 and 4 are both zero, then bits 14:31 are unused by the
+ * hardware. Otherwise, if either bit 3 or 4 is set, the definition
+ * of bits 14:31 vary according to the following depiction.
+ *
+ * 0 End of packet 0 End of packet
+ * 1 Coalesce 1 Coalesce
+ * 2 Insert VLAN tag 2 Insert VLAN tag
+ * 3 Custom csum enable = 0 3 Custom csum enable = 1
+ * 4 Segment enable = 1 4 Segment enable = 0
+ * 5 Generate IP checksum 5 Generate IP checksum
+ * 6 Generate TCP checksum 6 Generate TCP checksum
+ * 7 Generate UDP checksum 7 Generate UDP checksum
+ * 8 VLAN tagged 8 VLAN tagged
+ * 9 Ethernet frame type 9 Ethernet frame type
+ * 10-+ 10-+
+ * 11 | IP hdr length (10:13) 11 | IP hdr length (10:13)
+ * 12 | (num 32-bit words) 12 | (num 32-bit words)
+ * 13-+ 13-+
+ * 14-+ 14 Unused
+ * 15 | TCP hdr length (14:17) 15 Unused
+ * 16 | (num 32-bit words) 16-+
+ * 17-+ 17 |
+ * 18 Header TPD flag 18 |
+ * 19-+ 19 | Payload offset
+ * 20 | 20 | (16:23)
+ * 21 | 21 |
+ * 22 | 22 |
+ * 23 | 23-+
+ * 24 | 24-+
+ * 25 | MSS (19:31) 25 |
+ * 26 | 26 |
+ * 27 | 27 | Custom csum offset
+ * 28 | 28 | (24:31)
+ * 29 | 29 |
+ * 30 | 30 |
+ * 31-+ 31-+
+ */
-union tpd_descr {
- u64 data;
- struct csum_param csum;
- struct tso_param tso;
-};
+/* tpd word 2 */
+#define TPD_BUFLEN_MASK 0x3FFF
+#define TPD_BUFLEN_SHIFT 0
+#define TPD_DMAINT_MASK 0x0001
+#define TPD_DMAINT_SHIFT 14
+#define TPD_PKTNT_MASK 0x0001
+#define TPD_PKTINT_SHIFT 15
+#define TPD_VLANTAG_MASK 0xFFFF
+#define TPD_VLAN_SHIFT 16
+
+/* tpd word 3 bits 0:13 */
+#define TPD_EOP_MASK 0x0001
+#define TPD_EOP_SHIFT 0
+#define TPD_COALESCE_MASK 0x0001
+#define TPD_COALESCE_SHIFT 1
+#define TPD_INS_VL_TAG_MASK 0x0001
+#define TPD_INS_VL_TAG_SHIFT 2
+#define TPD_CUST_CSUM_EN_MASK 0x0001
+#define TPD_CUST_CSUM_EN_SHIFT 3
+#define TPD_SEGMENT_EN_MASK 0x0001
+#define TPD_SEGMENT_EN_SHIFT 4
+#define TPD_IP_CSUM_MASK 0x0001
+#define TPD_IP_CSUM_SHIFT 5
+#define TPD_TCP_CSUM_MASK 0x0001
+#define TPD_TCP_CSUM_SHIFT 6
+#define TPD_UDP_CSUM_MASK 0x0001
+#define TPD_UDP_CSUM_SHIFT 7
+#define TPD_VL_TAGGED_MASK 0x0001
+#define TPD_VL_TAGGED_SHIFT 8
+#define TPD_ETHTYPE_MASK 0x0001
+#define TPD_ETHTYPE_SHIFT 9
+#define TPD_IPHL_MASK 0x000F
+#define TPD_IPHL_SHIFT 10
+
+/* tpd word 3 bits 14:31 if segment enabled */
+#define TPD_TCPHDRLEN_MASK 0x000F
+#define TPD_TCPHDRLEN_SHIFT 14
+#define TPD_HDRFLAG_MASK 0x0001
+#define TPD_HDRFLAG_SHIFT 18
+#define TPD_MSS_MASK 0x1FFF
+#define TPD_MSS_SHIFT 19
+
+/* tpd word 3 bits 16:31 if custom csum enabled */
+#define TPD_PLOADOFFSET_MASK 0x00FF
+#define TPD_PLOADOFFSET_SHIFT 16
+#define TPD_CCSUMOFFSET_MASK 0x00FF
+#define TPD_CCSUMOFFSET_SHIFT 24
struct tx_packet_desc {
__le64 buffer_addr;
- union tpd_descr desc;
+ __le32 word2;
+ __le32 word3;
};
/* DMA Order Settings */
projects / linux-2.6-omap-h63xx.git / blobdiff