1 | /* |
2 | * Copyright (c) 2003-2008 Chelsio, Inc. All rights reserved. |
3 | * |
4 | * This software is available to you under a choice of one of two |
5 | * licenses. You may choose to be licensed under the terms of the GNU |
6 | * General Public License (GPL) Version 2, available from the file |
7 | * COPYING in the main directory of this source tree, or the |
8 | * OpenIB.org BSD license below: |
9 | * |
10 | * Redistribution and use in source and binary forms, with or |
11 | * without modification, are permitted provided that the following |
12 | * conditions are met: |
13 | * |
14 | * - Redistributions of source code must retain the above |
15 | * copyright notice, this list of conditions and the following |
16 | * disclaimer. |
17 | * |
18 | * - Redistributions in binary form must reproduce the above |
19 | * copyright notice, this list of conditions and the following |
20 | * disclaimer in the documentation and/or other materials |
21 | * provided with the distribution. |
22 | * |
23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
30 | * SOFTWARE. |
31 | */ |
32 | |
33 | /* This file should not be included directly. Include common.h instead. */ |
34 | |
35 | #ifndef __T3_ADAPTER_H__ |
36 | #define __T3_ADAPTER_H__ |
37 | |
38 | #include <linux/pci.h> |
39 | #include <linux/spinlock.h> |
40 | #include <linux/interrupt.h> |
41 | #include <linux/timer.h> |
42 | #include <linux/cache.h> |
43 | #include <linux/mutex.h> |
44 | #include <linux/bitops.h> |
45 | #include "t3cdev.h" |
46 | #include <asm/io.h> |
47 | |
48 | struct adapter; |
49 | struct sge_qset; |
50 | struct port_info; |
51 | |
52 | enum mac_idx_types { |
53 | LAN_MAC_IDX = 0, |
54 | SAN_MAC_IDX, |
55 | |
56 | MAX_MAC_IDX |
57 | }; |
58 | |
59 | struct iscsi_config { |
60 | __u8 mac_addr[ETH_ALEN]; |
61 | __u32 flags; |
62 | int (*send)(struct port_info *pi, struct sk_buff **skb); |
63 | int (*recv)(struct port_info *pi, struct sk_buff *skb); |
64 | }; |
65 | |
66 | struct port_info { |
67 | struct adapter *adapter; |
68 | struct sge_qset *qs; |
69 | u8 port_id; |
70 | u8 nqsets; |
71 | u8 first_qset; |
72 | struct cphy phy; |
73 | struct cmac mac; |
74 | struct link_config link_config; |
75 | int activity; |
76 | __be32 iscsi_ipv4addr; |
77 | struct iscsi_config iscsic; |
78 | |
79 | int link_fault; /* link fault was detected */ |
80 | }; |
81 | |
82 | enum { /* adapter flags */ |
83 | FULL_INIT_DONE = (1 << 0), |
84 | USING_MSI = (1 << 1), |
85 | USING_MSIX = (1 << 2), |
86 | QUEUES_BOUND = (1 << 3), |
87 | TP_PARITY_INIT = (1 << 4), |
88 | NAPI_INIT = (1 << 5), |
89 | }; |
90 | |
91 | struct fl_pg_chunk { |
92 | struct page *page; |
93 | void *va; |
94 | unsigned int offset; |
95 | unsigned long *p_cnt; |
96 | dma_addr_t mapping; |
97 | }; |
98 | |
99 | struct rx_desc; |
100 | struct rx_sw_desc; |
101 | |
102 | struct sge_fl { /* SGE per free-buffer list state */ |
103 | unsigned int buf_size; /* size of each Rx buffer */ |
104 | unsigned int credits; /* # of available Rx buffers */ |
105 | unsigned int pend_cred; /* new buffers since last FL DB ring */ |
106 | unsigned int size; /* capacity of free list */ |
107 | unsigned int cidx; /* consumer index */ |
108 | unsigned int pidx; /* producer index */ |
109 | unsigned int gen; /* free list generation */ |
110 | struct fl_pg_chunk pg_chunk;/* page chunk cache */ |
111 | unsigned int use_pages; /* whether FL uses pages or sk_buffs */ |
112 | unsigned int order; /* order of page allocations */ |
113 | unsigned int alloc_size; /* size of allocated buffer */ |
114 | struct rx_desc *desc; /* address of HW Rx descriptor ring */ |
115 | struct rx_sw_desc *sdesc; /* address of SW Rx descriptor ring */ |
116 | dma_addr_t phys_addr; /* physical address of HW ring start */ |
117 | unsigned int cntxt_id; /* SGE context id for the free list */ |
118 | unsigned long empty; /* # of times queue ran out of buffers */ |
119 | unsigned long alloc_failed; /* # of times buffer allocation failed */ |
120 | }; |
121 | |
122 | /* |
123 | * Bundle size for grouping offload RX packets for delivery to the stack. |
124 | * Don't make this too big as we do prefetch on each packet in a bundle. |
125 | */ |
126 | # define RX_BUNDLE_SIZE 8 |
127 | |
128 | struct rsp_desc; |
129 | |
130 | struct sge_rspq { /* state for an SGE response queue */ |
131 | unsigned int credits; /* # of pending response credits */ |
132 | unsigned int size; /* capacity of response queue */ |
133 | unsigned int cidx; /* consumer index */ |
134 | unsigned int gen; /* current generation bit */ |
135 | unsigned int polling; /* is the queue serviced through NAPI? */ |
136 | unsigned int holdoff_tmr; /* interrupt holdoff timer in 100ns */ |
137 | unsigned int next_holdoff; /* holdoff time for next interrupt */ |
138 | unsigned int rx_recycle_buf; /* whether recycling occurred |
139 | within current sop-eop */ |
140 | struct rsp_desc *desc; /* address of HW response ring */ |
141 | dma_addr_t phys_addr; /* physical address of the ring */ |
142 | unsigned int cntxt_id; /* SGE context id for the response q */ |
143 | spinlock_t lock; /* guards response processing */ |
144 | struct sk_buff_head rx_queue; /* offload packet receive queue */ |
145 | struct sk_buff *pg_skb; /* used to build frag list in napi handler */ |
146 | |
147 | unsigned long offload_pkts; |
148 | unsigned long offload_bundles; |
149 | unsigned long eth_pkts; /* # of ethernet packets */ |
150 | unsigned long pure_rsps; /* # of pure (non-data) responses */ |
151 | unsigned long imm_data; /* responses with immediate data */ |
152 | unsigned long rx_drops; /* # of packets dropped due to no mem */ |
153 | unsigned long async_notif; /* # of asynchronous notification events */ |
154 | unsigned long empty; /* # of times queue ran out of credits */ |
155 | unsigned long nomem; /* # of responses deferred due to no mem */ |
156 | unsigned long unhandled_irqs; /* # of spurious intrs */ |
157 | unsigned long starved; |
158 | unsigned long restarted; |
159 | }; |
160 | |
161 | struct tx_desc; |
162 | struct tx_sw_desc; |
163 | |
164 | struct sge_txq { /* state for an SGE Tx queue */ |
165 | unsigned long flags; /* HW DMA fetch status */ |
166 | unsigned int in_use; /* # of in-use Tx descriptors */ |
167 | unsigned int size; /* # of descriptors */ |
168 | unsigned int processed; /* total # of descs HW has processed */ |
169 | unsigned int cleaned; /* total # of descs SW has reclaimed */ |
170 | unsigned int stop_thres; /* SW TX queue suspend threshold */ |
171 | unsigned int cidx; /* consumer index */ |
172 | unsigned int pidx; /* producer index */ |
173 | unsigned int gen; /* current value of generation bit */ |
174 | unsigned int unacked; /* Tx descriptors used since last COMPL */ |
175 | struct tx_desc *desc; /* address of HW Tx descriptor ring */ |
176 | struct tx_sw_desc *sdesc; /* address of SW Tx descriptor ring */ |
177 | spinlock_t lock; /* guards enqueueing of new packets */ |
178 | unsigned int token; /* WR token */ |
179 | dma_addr_t phys_addr; /* physical address of the ring */ |
180 | struct sk_buff_head sendq; /* List of backpressured offload packets */ |
181 | struct work_struct qresume_task; /* restarts the queue */ |
182 | unsigned int cntxt_id; /* SGE context id for the Tx q */ |
183 | unsigned long stops; /* # of times q has been stopped */ |
184 | unsigned long restarts; /* # of queue restarts */ |
185 | }; |
186 | |
187 | enum { /* per port SGE statistics */ |
188 | SGE_PSTAT_TSO, /* # of TSO requests */ |
189 | SGE_PSTAT_RX_CSUM_GOOD, /* # of successful RX csum offloads */ |
190 | SGE_PSTAT_TX_CSUM, /* # of TX checksum offloads */ |
191 | SGE_PSTAT_VLANEX, /* # of VLAN tag extractions */ |
192 | SGE_PSTAT_VLANINS, /* # of VLAN tag insertions */ |
193 | |
194 | SGE_PSTAT_MAX /* must be last */ |
195 | }; |
196 | |
197 | struct napi_gro_fraginfo; |
198 | |
199 | struct sge_qset { /* an SGE queue set */ |
200 | struct adapter *adap; |
201 | struct napi_struct napi; |
202 | struct sge_rspq rspq; |
203 | struct sge_fl fl[SGE_RXQ_PER_SET]; |
204 | struct sge_txq txq[SGE_TXQ_PER_SET]; |
205 | int nomem; |
206 | void *lro_va; |
207 | struct net_device *netdev; |
208 | struct netdev_queue *tx_q; /* associated netdev TX queue */ |
209 | unsigned long txq_stopped; /* which Tx queues are stopped */ |
210 | struct timer_list tx_reclaim_timer; /* reclaims TX buffers */ |
211 | struct timer_list rx_reclaim_timer; /* reclaims RX buffers */ |
212 | unsigned long port_stats[SGE_PSTAT_MAX]; |
213 | } ____cacheline_aligned; |
214 | |
215 | struct sge { |
216 | struct sge_qset qs[SGE_QSETS]; |
217 | spinlock_t reg_lock; /* guards non-atomic SGE registers (eg context) */ |
218 | }; |
219 | |
220 | struct adapter { |
221 | struct t3cdev tdev; |
222 | struct list_head adapter_list; |
223 | void __iomem *regs; |
224 | struct pci_dev *pdev; |
225 | unsigned long registered_device_map; |
226 | unsigned long open_device_map; |
227 | unsigned long flags; |
228 | |
229 | const char *name; |
230 | int msg_enable; |
231 | unsigned int mmio_len; |
232 | |
233 | struct adapter_params params; |
234 | unsigned int slow_intr_mask; |
235 | unsigned long irq_stats[IRQ_NUM_STATS]; |
236 | |
237 | int msix_nvectors; |
238 | struct { |
239 | unsigned short vec; |
240 | char desc[22]; |
241 | } msix_info[SGE_QSETS + 1]; |
242 | |
243 | /* T3 modules */ |
244 | struct sge sge; |
245 | struct mc7 pmrx; |
246 | struct mc7 pmtx; |
247 | struct mc7 cm; |
248 | struct mc5 mc5; |
249 | |
250 | struct net_device *port[MAX_NPORTS]; |
251 | unsigned int check_task_cnt; |
252 | struct delayed_work adap_check_task; |
253 | struct work_struct ext_intr_handler_task; |
254 | struct work_struct fatal_error_handler_task; |
255 | struct work_struct link_fault_handler_task; |
256 | |
257 | struct work_struct db_full_task; |
258 | struct work_struct db_empty_task; |
259 | struct work_struct db_drop_task; |
260 | |
261 | struct dentry *debugfs_root; |
262 | |
263 | struct mutex mdio_lock; |
264 | spinlock_t stats_lock; |
265 | spinlock_t work_lock; |
266 | |
267 | struct sk_buff *nofail_skb; |
268 | }; |
269 | |
270 | static inline u32 t3_read_reg(struct adapter *adapter, u32 reg_addr) |
271 | { |
272 | u32 val = readl(addr: adapter->regs + reg_addr); |
273 | |
274 | CH_DBG(adapter, MMIO, "read register 0x%x value 0x%x\n" , reg_addr, val); |
275 | return val; |
276 | } |
277 | |
278 | static inline void t3_write_reg(struct adapter *adapter, u32 reg_addr, u32 val) |
279 | { |
280 | CH_DBG(adapter, MMIO, "setting register 0x%x to 0x%x\n" , reg_addr, val); |
281 | writel(val, addr: adapter->regs + reg_addr); |
282 | } |
283 | |
284 | static inline struct port_info *adap2pinfo(struct adapter *adap, int idx) |
285 | { |
286 | return netdev_priv(dev: adap->port[idx]); |
287 | } |
288 | |
289 | static inline int phy2portid(struct cphy *phy) |
290 | { |
291 | struct adapter *adap = phy->adapter; |
292 | struct port_info *port0 = adap2pinfo(adap, idx: 0); |
293 | |
294 | return &port0->phy == phy ? 0 : 1; |
295 | } |
296 | |
297 | #define OFFLOAD_DEVMAP_BIT 15 |
298 | |
299 | #define tdev2adap(d) container_of(d, struct adapter, tdev) |
300 | |
301 | static inline int offload_running(struct adapter *adapter) |
302 | { |
303 | return test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map); |
304 | } |
305 | |
306 | int t3_offload_tx(struct t3cdev *tdev, struct sk_buff *skb); |
307 | |
308 | void t3_os_ext_intr_handler(struct adapter *adapter); |
309 | void t3_os_link_changed(struct adapter *adapter, int port_id, int link_status, |
310 | int speed, int duplex, int fc); |
311 | void t3_os_phymod_changed(struct adapter *adap, int port_id); |
312 | void t3_os_link_fault(struct adapter *adapter, int port_id, int state); |
313 | void t3_os_link_fault_handler(struct adapter *adapter, int port_id); |
314 | |
315 | void t3_sge_start(struct adapter *adap); |
316 | void t3_sge_stop_dma(struct adapter *adap); |
317 | void t3_sge_stop(struct adapter *adap); |
318 | void t3_start_sge_timers(struct adapter *adap); |
319 | void t3_stop_sge_timers(struct adapter *adap); |
320 | void t3_free_sge_resources(struct adapter *adap); |
321 | void t3_sge_err_intr_handler(struct adapter *adapter); |
322 | irq_handler_t t3_intr_handler(struct adapter *adap, int polling); |
323 | netdev_tx_t t3_eth_xmit(struct sk_buff *skb, struct net_device *dev); |
324 | int t3_mgmt_tx(struct adapter *adap, struct sk_buff *skb); |
325 | void t3_update_qset_coalesce(struct sge_qset *qs, const struct qset_params *p); |
326 | int t3_sge_alloc_qset(struct adapter *adapter, unsigned int id, int nports, |
327 | int irq_vec_idx, const struct qset_params *p, |
328 | int ntxq, struct net_device *dev, |
329 | struct netdev_queue *netdevq); |
330 | extern struct workqueue_struct *cxgb3_wq; |
331 | |
332 | int t3_get_edc_fw(struct cphy *phy, int edc_idx, int size); |
333 | |
334 | #endif /* __T3_ADAPTER_H__ */ |
335 | |