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authorAl Viro <viro@ftp.linux.org.uk>2008-03-16 18:23:24 -0400
committerJeff Garzik <jeff@garzik.org>2008-03-25 23:16:03 -0400
commit6d8126f988556d593f13be32cbe60dacf19c2d2c (patch)
treeef007d4f9e33a9477427f7967b0264896e5824a2 /drivers/net
parent7deb07b1befc9f09dbdaed66c9613a3d08f1c061 (diff)
igb trivial annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/igb/e1000_82575.h42
-rw-r--r--drivers/net/igb/e1000_hw.h82
-rw-r--r--drivers/net/igb/igb_main.c17
3 files changed, 72 insertions, 69 deletions
diff --git a/drivers/net/igb/e1000_82575.h b/drivers/net/igb/e1000_82575.h
index 6604d96bd567..76ea846663db 100644
--- a/drivers/net/igb/e1000_82575.h
+++ b/drivers/net/igb/e1000_82575.h
@@ -61,28 +61,28 @@
61/* Receive Descriptor - Advanced */ 61/* Receive Descriptor - Advanced */
62union e1000_adv_rx_desc { 62union e1000_adv_rx_desc {
63 struct { 63 struct {
64 u64 pkt_addr; /* Packet buffer address */ 64 __le64 pkt_addr; /* Packet buffer address */
65 u64 hdr_addr; /* Header buffer address */ 65 __le64 hdr_addr; /* Header buffer address */
66 } read; 66 } read;
67 struct { 67 struct {
68 struct { 68 struct {
69 struct { 69 struct {
70 u16 pkt_info; /* RSS type, Packet type */ 70 __le16 pkt_info; /* RSS type, Packet type */
71 u16 hdr_info; /* Split Header, 71 __le16 hdr_info; /* Split Header,
72 * header buffer length */ 72 * header buffer length */
73 } lo_dword; 73 } lo_dword;
74 union { 74 union {
75 u32 rss; /* RSS Hash */ 75 __le32 rss; /* RSS Hash */
76 struct { 76 struct {
77 u16 ip_id; /* IP id */ 77 __le16 ip_id; /* IP id */
78 u16 csum; /* Packet Checksum */ 78 __le16 csum; /* Packet Checksum */
79 } csum_ip; 79 } csum_ip;
80 } hi_dword; 80 } hi_dword;
81 } lower; 81 } lower;
82 struct { 82 struct {
83 u32 status_error; /* ext status/error */ 83 __le32 status_error; /* ext status/error */
84 u16 length; /* Packet length */ 84 __le16 length; /* Packet length */
85 u16 vlan; /* VLAN tag */ 85 __le16 vlan; /* VLAN tag */
86 } upper; 86 } upper;
87 } wb; /* writeback */ 87 } wb; /* writeback */
88}; 88};
@@ -97,14 +97,14 @@ union e1000_adv_rx_desc {
97/* Transmit Descriptor - Advanced */ 97/* Transmit Descriptor - Advanced */
98union e1000_adv_tx_desc { 98union e1000_adv_tx_desc {
99 struct { 99 struct {
100 u64 buffer_addr; /* Address of descriptor's data buf */ 100 __le64 buffer_addr; /* Address of descriptor's data buf */
101 u32 cmd_type_len; 101 __le32 cmd_type_len;
102 u32 olinfo_status; 102 __le32 olinfo_status;
103 } read; 103 } read;
104 struct { 104 struct {
105 u64 rsvd; /* Reserved */ 105 __le64 rsvd; /* Reserved */
106 u32 nxtseq_seed; 106 __le32 nxtseq_seed;
107 u32 status; 107 __le32 status;
108 } wb; 108 } wb;
109}; 109};
110 110
@@ -119,10 +119,10 @@ union e1000_adv_tx_desc {
119 119
120/* Context descriptors */ 120/* Context descriptors */
121struct e1000_adv_tx_context_desc { 121struct e1000_adv_tx_context_desc {
122 u32 vlan_macip_lens; 122 __le32 vlan_macip_lens;
123 u32 seqnum_seed; 123 __le32 seqnum_seed;
124 u32 type_tucmd_mlhl; 124 __le32 type_tucmd_mlhl;
125 u32 mss_l4len_idx; 125 __le32 mss_l4len_idx;
126}; 126};
127 127
128#define E1000_ADVTXD_MACLEN_SHIFT 9 /* Adv ctxt desc mac len shift */ 128#define E1000_ADVTXD_MACLEN_SHIFT 9 /* Adv ctxt desc mac len shift */
diff --git a/drivers/net/igb/e1000_hw.h b/drivers/net/igb/e1000_hw.h
index 161fb68764af..7b2c70a3b8cc 100644
--- a/drivers/net/igb/e1000_hw.h
+++ b/drivers/net/igb/e1000_hw.h
@@ -143,35 +143,35 @@ enum e1000_fc_type {
143 143
144/* Receive Descriptor */ 144/* Receive Descriptor */
145struct e1000_rx_desc { 145struct e1000_rx_desc {
146 u64 buffer_addr; /* Address of the descriptor's data buffer */ 146 __le64 buffer_addr; /* Address of the descriptor's data buffer */
147 u16 length; /* Length of data DMAed into data buffer */ 147 __le16 length; /* Length of data DMAed into data buffer */
148 u16 csum; /* Packet checksum */ 148 __le16 csum; /* Packet checksum */
149 u8 status; /* Descriptor status */ 149 u8 status; /* Descriptor status */
150 u8 errors; /* Descriptor Errors */ 150 u8 errors; /* Descriptor Errors */
151 u16 special; 151 __le16 special;
152}; 152};
153 153
154/* Receive Descriptor - Extended */ 154/* Receive Descriptor - Extended */
155union e1000_rx_desc_extended { 155union e1000_rx_desc_extended {
156 struct { 156 struct {
157 u64 buffer_addr; 157 __le64 buffer_addr;
158 u64 reserved; 158 __le64 reserved;
159 } read; 159 } read;
160 struct { 160 struct {
161 struct { 161 struct {
162 u32 mrq; /* Multiple Rx Queues */ 162 __le32 mrq; /* Multiple Rx Queues */
163 union { 163 union {
164 u32 rss; /* RSS Hash */ 164 __le32 rss; /* RSS Hash */
165 struct { 165 struct {
166 u16 ip_id; /* IP id */ 166 __le16 ip_id; /* IP id */
167 u16 csum; /* Packet Checksum */ 167 __le16 csum; /* Packet Checksum */
168 } csum_ip; 168 } csum_ip;
169 } hi_dword; 169 } hi_dword;
170 } lower; 170 } lower;
171 struct { 171 struct {
172 u32 status_error; /* ext status/error */ 172 __le32 status_error; /* ext status/error */
173 u16 length; 173 __le16 length;
174 u16 vlan; /* VLAN tag */ 174 __le16 vlan; /* VLAN tag */
175 } upper; 175 } upper;
176 } wb; /* writeback */ 176 } wb; /* writeback */
177}; 177};
@@ -181,49 +181,49 @@ union e1000_rx_desc_extended {
181union e1000_rx_desc_packet_split { 181union e1000_rx_desc_packet_split {
182 struct { 182 struct {
183 /* one buffer for protocol header(s), three data buffers */ 183 /* one buffer for protocol header(s), three data buffers */
184 u64 buffer_addr[MAX_PS_BUFFERS]; 184 __le64 buffer_addr[MAX_PS_BUFFERS];
185 } read; 185 } read;
186 struct { 186 struct {
187 struct { 187 struct {
188 u32 mrq; /* Multiple Rx Queues */ 188 __le32 mrq; /* Multiple Rx Queues */
189 union { 189 union {
190 u32 rss; /* RSS Hash */ 190 __le32 rss; /* RSS Hash */
191 struct { 191 struct {
192 u16 ip_id; /* IP id */ 192 __le16 ip_id; /* IP id */
193 u16 csum; /* Packet Checksum */ 193 __le16 csum; /* Packet Checksum */
194 } csum_ip; 194 } csum_ip;
195 } hi_dword; 195 } hi_dword;
196 } lower; 196 } lower;
197 struct { 197 struct {
198 u32 status_error; /* ext status/error */ 198 __le32 status_error; /* ext status/error */
199 u16 length0; /* length of buffer 0 */ 199 __le16 length0; /* length of buffer 0 */
200 u16 vlan; /* VLAN tag */ 200 __le16 vlan; /* VLAN tag */
201 } middle; 201 } middle;
202 struct { 202 struct {
203 u16 header_status; 203 __le16 header_status;
204 u16 length[3]; /* length of buffers 1-3 */ 204 __le16 length[3]; /* length of buffers 1-3 */
205 } upper; 205 } upper;
206 u64 reserved; 206 __le64 reserved;
207 } wb; /* writeback */ 207 } wb; /* writeback */
208}; 208};
209 209
210/* Transmit Descriptor */ 210/* Transmit Descriptor */
211struct e1000_tx_desc { 211struct e1000_tx_desc {
212 u64 buffer_addr; /* Address of the descriptor's data buffer */ 212 __le64 buffer_addr; /* Address of the descriptor's data buffer */
213 union { 213 union {
214 u32 data; 214 __le32 data;
215 struct { 215 struct {
216 u16 length; /* Data buffer length */ 216 __le16 length; /* Data buffer length */
217 u8 cso; /* Checksum offset */ 217 u8 cso; /* Checksum offset */
218 u8 cmd; /* Descriptor control */ 218 u8 cmd; /* Descriptor control */
219 } flags; 219 } flags;
220 } lower; 220 } lower;
221 union { 221 union {
222 u32 data; 222 __le32 data;
223 struct { 223 struct {
224 u8 status; /* Descriptor status */ 224 u8 status; /* Descriptor status */
225 u8 css; /* Checksum start */ 225 u8 css; /* Checksum start */
226 u16 special; 226 __le16 special;
227 } fields; 227 } fields;
228 } upper; 228 } upper;
229}; 229};
@@ -231,49 +231,49 @@ struct e1000_tx_desc {
231/* Offload Context Descriptor */ 231/* Offload Context Descriptor */
232struct e1000_context_desc { 232struct e1000_context_desc {
233 union { 233 union {
234 u32 ip_config; 234 __le32 ip_config;
235 struct { 235 struct {
236 u8 ipcss; /* IP checksum start */ 236 u8 ipcss; /* IP checksum start */
237 u8 ipcso; /* IP checksum offset */ 237 u8 ipcso; /* IP checksum offset */
238 u16 ipcse; /* IP checksum end */ 238 __le16 ipcse; /* IP checksum end */
239 } ip_fields; 239 } ip_fields;
240 } lower_setup; 240 } lower_setup;
241 union { 241 union {
242 u32 tcp_config; 242 __le32 tcp_config;
243 struct { 243 struct {
244 u8 tucss; /* TCP checksum start */ 244 u8 tucss; /* TCP checksum start */
245 u8 tucso; /* TCP checksum offset */ 245 u8 tucso; /* TCP checksum offset */
246 u16 tucse; /* TCP checksum end */ 246 __le16 tucse; /* TCP checksum end */
247 } tcp_fields; 247 } tcp_fields;
248 } upper_setup; 248 } upper_setup;
249 u32 cmd_and_length; 249 __le32 cmd_and_length;
250 union { 250 union {
251 u32 data; 251 __le32 data;
252 struct { 252 struct {
253 u8 status; /* Descriptor status */ 253 u8 status; /* Descriptor status */
254 u8 hdr_len; /* Header length */ 254 u8 hdr_len; /* Header length */
255 u16 mss; /* Maximum segment size */ 255 __le16 mss; /* Maximum segment size */
256 } fields; 256 } fields;
257 } tcp_seg_setup; 257 } tcp_seg_setup;
258}; 258};
259 259
260/* Offload data descriptor */ 260/* Offload data descriptor */
261struct e1000_data_desc { 261struct e1000_data_desc {
262 u64 buffer_addr; /* Address of the descriptor's buffer address */ 262 __le64 buffer_addr; /* Address of the descriptor's buffer address */
263 union { 263 union {
264 u32 data; 264 __le32 data;
265 struct { 265 struct {
266 u16 length; /* Data buffer length */ 266 __le16 length; /* Data buffer length */
267 u8 typ_len_ext; 267 u8 typ_len_ext;
268 u8 cmd; 268 u8 cmd;
269 } flags; 269 } flags;
270 } lower; 270 } lower;
271 union { 271 union {
272 u32 data; 272 __le32 data;
273 struct { 273 struct {
274 u8 status; /* Descriptor status */ 274 u8 status; /* Descriptor status */
275 u8 popts; /* Packet Options */ 275 u8 popts; /* Packet Options */
276 u16 special; 276 __le16 special;
277 } fields; 277 } fields;
278 } upper; 278 } upper;
279}; 279};
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 9f3168d6e239..aaee02e9e3f0 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -3254,6 +3254,13 @@ quit_polling:
3254 3254
3255 return 1; 3255 return 1;
3256} 3256}
3257
3258static inline u32 get_head(struct igb_ring *tx_ring)
3259{
3260 void *end = (struct e1000_tx_desc *)tx_ring->desc + tx_ring->count;
3261 return le32_to_cpu(*(volatile __le32 *)end);
3262}
3263
3257/** 3264/**
3258 * igb_clean_tx_irq - Reclaim resources after transmit completes 3265 * igb_clean_tx_irq - Reclaim resources after transmit completes
3259 * @adapter: board private structure 3266 * @adapter: board private structure
@@ -3275,9 +3282,7 @@ static bool igb_clean_tx_irq(struct igb_adapter *adapter,
3275 unsigned int total_bytes = 0, total_packets = 0; 3282 unsigned int total_bytes = 0, total_packets = 0;
3276 3283
3277 rmb(); 3284 rmb();
3278 head = *(volatile u32 *)((struct e1000_tx_desc *)tx_ring->desc 3285 head = get_head(tx_ring);
3279 + tx_ring->count);
3280 head = le32_to_cpu(head);
3281 i = tx_ring->next_to_clean; 3286 i = tx_ring->next_to_clean;
3282 while (1) { 3287 while (1) {
3283 while (i != head) { 3288 while (i != head) {
@@ -3312,9 +3317,7 @@ static bool igb_clean_tx_irq(struct igb_adapter *adapter,
3312 } 3317 }
3313 oldhead = head; 3318 oldhead = head;
3314 rmb(); 3319 rmb();
3315 head = *(volatile u32 *)((struct e1000_tx_desc *)tx_ring->desc 3320 head = get_head(tx_ring);
3316 + tx_ring->count);
3317 head = le32_to_cpu(head);
3318 if (head == oldhead) 3321 if (head == oldhead)
3319 goto done_cleaning; 3322 goto done_cleaning;
3320 } /* while (1) */ 3323 } /* while (1) */
@@ -3388,7 +3391,7 @@ done_cleaning:
3388 * @vlan: descriptor vlan field as written by hardware (no le/be conversion) 3391 * @vlan: descriptor vlan field as written by hardware (no le/be conversion)
3389 * @skb: pointer to sk_buff to be indicated to stack 3392 * @skb: pointer to sk_buff to be indicated to stack
3390 **/ 3393 **/
3391static void igb_receive_skb(struct igb_adapter *adapter, u8 status, u16 vlan, 3394static void igb_receive_skb(struct igb_adapter *adapter, u8 status, __le16 vlan,
3392 struct sk_buff *skb) 3395 struct sk_buff *skb)
3393{ 3396{
3394 if (adapter->vlgrp && (status & E1000_RXD_STAT_VP)) 3397 if (adapter->vlgrp && (status & E1000_RXD_STAT_VP))
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-28 02:47:06 -0500