1 /* 10G controller driver for Samsung SoCs
3 * Copyright (C) 2013 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com
6 * Author: Siva Reddy Kallam <siva.kallam@samsung.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 #ifndef __SXGBE_DESC_H__
13 #define __SXGBE_DESC_H__
15 #define SXGBE_DESC_SIZE_BYTES 16
17 /* forward declaration */
18 struct sxgbe_extra_stats;
20 /* Transmit checksum insertion control */
21 enum tdes_csum_insertion {
22 cic_disabled = 0, /* Checksum Insertion Control */
23 cic_only_ip = 1, /* Only IP header */
24 /* IP header but pseudoheader is not calculated */
25 cic_no_pseudoheader = 2,
26 cic_full = 3, /* IP header and pseudoheader */
29 struct sxgbe_tx_norm_desc {
30 u64 tdes01; /* buf1 address */
32 /* TX Read-Format Desc 2,3 */
38 u32 timestmp_enable:1;
60 /* tx write back Desc 2,3 */
71 struct sxgbe_rx_norm_desc {
73 u64 rdes01; /* buf1 address */
82 /* RX Read format Desc 2,3 */
99 u32 vlan_filter_match:1;
100 u32 sa_filter_fail:1;
101 u32 da_filter_fail:1;
102 u32 hash_filter_pass:1;
103 u32 macaddr_filter_match:8;
104 u32 l3_filter_match:1;
105 u32 l4_filter_match:1;
106 u32 l34_filter_num:3;
110 u32 rdes3_reserved:1;
113 u32 layer34_pkt_type:4;
114 u32 no_coagulation_pkt:1;
117 u32 context_des_avail:1;
120 u32 recv_context_desc:1;
126 /* Context descriptor structure */
127 struct sxgbe_tx_ctxt_desc {
135 u32 ivlan_tag_valid:1;
147 struct sxgbe_rx_ctxt_desc {
152 u32 tstamp_available:1;
154 u32 tstamp_dropped:1;
160 struct sxgbe_desc_ops {
161 /* DMA TX descriptor ring initialization */
162 void (*init_tx_desc)(struct sxgbe_tx_norm_desc *p);
164 /* Invoked by the xmit function to prepare the tx descriptor */
165 void (*tx_desc_enable_tse)(struct sxgbe_tx_norm_desc *p, u8 is_tse,
166 u32 total_hdr_len, u32 tcp_hdr_len,
167 u32 tcp_payload_len);
169 /* Assign buffer lengths for descriptor */
170 void (*prepare_tx_desc)(struct sxgbe_tx_norm_desc *p, u8 is_fd,
171 int buf1_len, int pkt_len, int cksum);
173 /* Set VLAN control information */
174 void (*tx_vlanctl_desc)(struct sxgbe_tx_norm_desc *p, int vlan_ctl);
176 /* Set the owner of the descriptor */
177 void (*set_tx_owner)(struct sxgbe_tx_norm_desc *p);
179 /* Get the owner of the descriptor */
180 int (*get_tx_owner)(struct sxgbe_tx_norm_desc *p);
182 /* Invoked by the xmit function to close the tx descriptor */
183 void (*close_tx_desc)(struct sxgbe_tx_norm_desc *p);
185 /* Clean the tx descriptor as soon as the tx irq is received */
186 void (*release_tx_desc)(struct sxgbe_tx_norm_desc *p);
188 /* Clear interrupt on tx frame completion. When this bit is
189 * set an interrupt happens as soon as the frame is transmitted
191 void (*clear_tx_ic)(struct sxgbe_tx_norm_desc *p);
193 /* Last tx segment reports the transmit status */
194 int (*get_tx_ls)(struct sxgbe_tx_norm_desc *p);
196 /* Get the buffer size from the descriptor */
197 int (*get_tx_len)(struct sxgbe_tx_norm_desc *p);
199 /* Set tx timestamp enable bit */
200 void (*tx_enable_tstamp)(struct sxgbe_tx_norm_desc *p);
202 /* get tx timestamp status */
203 int (*get_tx_timestamp_status)(struct sxgbe_tx_norm_desc *p);
205 /* TX Context Descripto Specific */
206 void (*tx_ctxt_desc_set_ctxt)(struct sxgbe_tx_ctxt_desc *p);
208 /* Set the owner of the TX context descriptor */
209 void (*tx_ctxt_desc_set_owner)(struct sxgbe_tx_ctxt_desc *p);
211 /* Get the owner of the TX context descriptor */
212 int (*get_tx_ctxt_owner)(struct sxgbe_tx_ctxt_desc *p);
215 void (*tx_ctxt_desc_set_mss)(struct sxgbe_tx_ctxt_desc *p, u16 mss);
218 int (*tx_ctxt_desc_get_mss)(struct sxgbe_tx_ctxt_desc *p);
221 void (*tx_ctxt_desc_set_tcmssv)(struct sxgbe_tx_ctxt_desc *p);
224 void (*tx_ctxt_desc_reset_ostc)(struct sxgbe_tx_ctxt_desc *p);
226 /* Set IVLAN information */
227 void (*tx_ctxt_desc_set_ivlantag)(struct sxgbe_tx_ctxt_desc *p,
228 int is_ivlanvalid, int ivlan_tag,
231 /* Return IVLAN Tag */
232 int (*tx_ctxt_desc_get_ivlantag)(struct sxgbe_tx_ctxt_desc *p);
235 void (*tx_ctxt_desc_set_vlantag)(struct sxgbe_tx_ctxt_desc *p,
236 int is_vlanvalid, int vlan_tag);
238 /* Return VLAN Tag */
239 int (*tx_ctxt_desc_get_vlantag)(struct sxgbe_tx_ctxt_desc *p);
242 void (*tx_ctxt_set_tstamp)(struct sxgbe_tx_ctxt_desc *p,
243 u8 ostc_enable, u64 tstamp);
245 /* Close TX context descriptor */
246 void (*close_tx_ctxt_desc)(struct sxgbe_tx_ctxt_desc *p);
248 /* WB status of context descriptor */
249 int (*get_tx_ctxt_cde)(struct sxgbe_tx_ctxt_desc *p);
251 /* DMA RX descriptor ring initialization */
252 void (*init_rx_desc)(struct sxgbe_rx_norm_desc *p, int disable_rx_ic,
256 int (*get_rx_owner)(struct sxgbe_rx_norm_desc *p);
259 void (*set_rx_owner)(struct sxgbe_rx_norm_desc *p);
261 /* Set Interrupt on completion bit */
262 void (*set_rx_int_on_com)(struct sxgbe_rx_norm_desc *p);
264 /* Get the receive frame size */
265 int (*get_rx_frame_len)(struct sxgbe_rx_norm_desc *p);
267 /* Return first Descriptor status */
268 int (*get_rx_fd_status)(struct sxgbe_rx_norm_desc *p);
270 /* Return first Descriptor status */
271 int (*get_rx_ld_status)(struct sxgbe_rx_norm_desc *p);
273 /* Return the reception status looking at the RDES1 */
274 int (*rx_wbstatus)(struct sxgbe_rx_norm_desc *p,
275 struct sxgbe_extra_stats *x, int *checksum);
278 int (*get_rx_ctxt_owner)(struct sxgbe_rx_ctxt_desc *p);
281 void (*set_rx_ctxt_owner)(struct sxgbe_rx_ctxt_desc *p);
283 /* Return the reception status looking at Context control information */
284 void (*rx_ctxt_wbstatus)(struct sxgbe_rx_ctxt_desc *p,
285 struct sxgbe_extra_stats *x);
287 /* Get rx timestamp status */
288 int (*get_rx_ctxt_tstamp_status)(struct sxgbe_rx_ctxt_desc *p);
290 /* Get timestamp value for rx, need to check this */
291 u64 (*get_timestamp)(struct sxgbe_rx_ctxt_desc *p);
294 const struct sxgbe_desc_ops *sxgbe_get_desc_ops(void);
296 #endif /* __SXGBE_DESC_H__ */