]>
Commit | Line | Data |
---|---|---|
5df6d737 AJ |
1 | /* |
2 | * Copyright 2008 Cisco Systems, Inc. All rights reserved. | |
3 | * Copyright 2007 Nuova Systems, Inc. All rights reserved. | |
4 | * | |
5 | * This program is free software; you may redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; version 2 of the License. | |
8 | * | |
9 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
10 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
11 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
12 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
13 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
14 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
15 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
16 | * SOFTWARE. | |
17 | */ | |
18 | #ifndef _FNIC_H_ | |
19 | #define _FNIC_H_ | |
20 | ||
21 | #include <linux/interrupt.h> | |
22 | #include <linux/netdevice.h> | |
23 | #include <linux/workqueue.h> | |
a737b88d | 24 | #include <linux/bitops.h> |
5df6d737 | 25 | #include <scsi/libfc.h> |
78112e55 | 26 | #include <scsi/libfcoe.h> |
5df6d737 AJ |
27 | #include "fnic_io.h" |
28 | #include "fnic_res.h" | |
29 | #include "vnic_dev.h" | |
30 | #include "vnic_wq.h" | |
31 | #include "vnic_rq.h" | |
32 | #include "vnic_cq.h" | |
33 | #include "vnic_wq_copy.h" | |
34 | #include "vnic_intr.h" | |
35 | #include "vnic_stats.h" | |
36 | #include "vnic_scsi.h" | |
37 | ||
38 | #define DRV_NAME "fnic" | |
39 | #define DRV_DESCRIPTION "Cisco FCoE HBA Driver" | |
666d0764 | 40 | #define DRV_VERSION "1.4.0.145" |
5df6d737 AJ |
41 | #define PFX DRV_NAME ": " |
42 | #define DFX DRV_NAME "%d: " | |
43 | ||
44 | #define DESC_CLEAN_LOW_WATERMARK 8 | |
45 | #define FNIC_MAX_IO_REQ 2048 /* scsi_cmnd tag map entries */ | |
46 | #define FNIC_IO_LOCKS 64 /* IO locks: power of 2 */ | |
47 | #define FNIC_DFLT_QUEUE_DEPTH 32 | |
48 | #define FNIC_STATS_RATE_LIMIT 4 /* limit rate at which stats are pulled up */ | |
da87bfab | 49 | |
5df6d737 AJ |
50 | /* |
51 | * Tag bits used for special requests. | |
52 | */ | |
5df6d737 AJ |
53 | #define FNIC_TAG_ABORT BIT(30) /* tag bit indicating abort */ |
54 | #define FNIC_TAG_DEV_RST BIT(29) /* indicates device reset */ | |
55 | #define FNIC_TAG_MASK (BIT(24) - 1) /* mask for lookup */ | |
56 | #define FNIC_NO_TAG -1 | |
57 | ||
58 | /* | |
59 | * Usage of the scsi_cmnd scratchpad. | |
60 | * These fields are locked by the hashed io_req_lock. | |
61 | */ | |
62 | #define CMD_SP(Cmnd) ((Cmnd)->SCp.ptr) | |
63 | #define CMD_STATE(Cmnd) ((Cmnd)->SCp.phase) | |
64 | #define CMD_ABTS_STATUS(Cmnd) ((Cmnd)->SCp.Message) | |
65 | #define CMD_LR_STATUS(Cmnd) ((Cmnd)->SCp.have_data_in) | |
66 | #define CMD_TAG(Cmnd) ((Cmnd)->SCp.sent_command) | |
67 | ||
68 | #define FCPIO_INVALID_CODE 0x100 /* hdr_status value unused by firmware */ | |
69 | ||
70 | #define FNIC_LUN_RESET_TIMEOUT 10000 /* mSec */ | |
71 | #define FNIC_HOST_RESET_TIMEOUT 10000 /* mSec */ | |
72 | #define FNIC_RMDEVICE_TIMEOUT 1000 /* mSec */ | |
73 | #define FNIC_HOST_RESET_SETTLE_TIME 30 /* Sec */ | |
74 | ||
75 | #define FNIC_MAX_FCP_TARGET 256 | |
76 | ||
77 | extern unsigned int fnic_log_level; | |
78 | ||
79 | #define FNIC_MAIN_LOGGING 0x01 | |
80 | #define FNIC_FCS_LOGGING 0x02 | |
81 | #define FNIC_SCSI_LOGGING 0x04 | |
82 | #define FNIC_ISR_LOGGING 0x08 | |
83 | ||
84 | #define FNIC_CHECK_LOGGING(LEVEL, CMD) \ | |
85 | do { \ | |
86 | if (unlikely(fnic_log_level & LEVEL)) \ | |
87 | do { \ | |
88 | CMD; \ | |
89 | } while (0); \ | |
90 | } while (0) | |
91 | ||
92 | #define FNIC_MAIN_DBG(kern_level, host, fmt, args...) \ | |
93 | FNIC_CHECK_LOGGING(FNIC_MAIN_LOGGING, \ | |
94 | shost_printk(kern_level, host, fmt, ##args);) | |
95 | ||
96 | #define FNIC_FCS_DBG(kern_level, host, fmt, args...) \ | |
97 | FNIC_CHECK_LOGGING(FNIC_FCS_LOGGING, \ | |
98 | shost_printk(kern_level, host, fmt, ##args);) | |
99 | ||
100 | #define FNIC_SCSI_DBG(kern_level, host, fmt, args...) \ | |
101 | FNIC_CHECK_LOGGING(FNIC_SCSI_LOGGING, \ | |
102 | shost_printk(kern_level, host, fmt, ##args);) | |
103 | ||
104 | #define FNIC_ISR_DBG(kern_level, host, fmt, args...) \ | |
105 | FNIC_CHECK_LOGGING(FNIC_ISR_LOGGING, \ | |
106 | shost_printk(kern_level, host, fmt, ##args);) | |
107 | ||
108 | extern const char *fnic_state_str[]; | |
109 | ||
110 | enum fnic_intx_intr_index { | |
111 | FNIC_INTX_WQ_RQ_COPYWQ, | |
112 | FNIC_INTX_ERR, | |
113 | FNIC_INTX_NOTIFY, | |
114 | FNIC_INTX_INTR_MAX, | |
115 | }; | |
116 | ||
117 | enum fnic_msix_intr_index { | |
118 | FNIC_MSIX_RQ, | |
119 | FNIC_MSIX_WQ, | |
120 | FNIC_MSIX_WQ_COPY, | |
121 | FNIC_MSIX_ERR_NOTIFY, | |
122 | FNIC_MSIX_INTR_MAX, | |
123 | }; | |
124 | ||
125 | struct fnic_msix_entry { | |
126 | int requested; | |
127 | char devname[IFNAMSIZ]; | |
128 | irqreturn_t (*isr)(int, void *); | |
129 | void *devid; | |
130 | }; | |
131 | ||
132 | enum fnic_state { | |
133 | FNIC_IN_FC_MODE = 0, | |
134 | FNIC_IN_FC_TRANS_ETH_MODE, | |
135 | FNIC_IN_ETH_MODE, | |
136 | FNIC_IN_ETH_TRANS_FC_MODE, | |
137 | }; | |
138 | ||
139 | #define FNIC_WQ_COPY_MAX 1 | |
140 | #define FNIC_WQ_MAX 1 | |
141 | #define FNIC_RQ_MAX 1 | |
142 | #define FNIC_CQ_MAX (FNIC_WQ_COPY_MAX + FNIC_WQ_MAX + FNIC_RQ_MAX) | |
143 | ||
144 | struct mempool; | |
145 | ||
146 | /* Per-instance private data structure */ | |
147 | struct fnic { | |
148 | struct fc_lport *lport; | |
78112e55 | 149 | struct fcoe_ctlr ctlr; /* FIP FCoE controller structure */ |
5df6d737 AJ |
150 | struct vnic_dev_bar bar0; |
151 | ||
152 | struct msix_entry msix_entry[FNIC_MSIX_INTR_MAX]; | |
153 | struct fnic_msix_entry msix[FNIC_MSIX_INTR_MAX]; | |
154 | ||
155 | struct vnic_stats *stats; | |
156 | unsigned long stats_time; /* time of stats update */ | |
157 | struct vnic_nic_cfg *nic_cfg; | |
158 | char name[IFNAMSIZ]; | |
159 | struct timer_list notify_timer; /* used for MSI interrupts */ | |
160 | ||
161 | unsigned int err_intr_offset; | |
162 | unsigned int link_intr_offset; | |
163 | ||
164 | unsigned int wq_count; | |
165 | unsigned int cq_count; | |
166 | ||
5df6d737 AJ |
167 | u32 vlan_hw_insert:1; /* let hw insert the tag */ |
168 | u32 in_remove:1; /* fnic device in removal */ | |
169 | u32 stop_rx_link_events:1; /* stop proc. rx frames, link events */ | |
170 | ||
171 | struct completion *remove_wait; /* device remove thread blocks */ | |
172 | ||
5df6d737 AJ |
173 | enum fnic_state state; |
174 | spinlock_t fnic_lock; | |
175 | ||
176 | u16 vlan_id; /* VLAN tag including priority */ | |
5df6d737 AJ |
177 | u8 data_src_addr[ETH_ALEN]; |
178 | u64 fcp_input_bytes; /* internal statistic */ | |
179 | u64 fcp_output_bytes; /* internal statistic */ | |
180 | u32 link_down_cnt; | |
181 | int link_status; | |
182 | ||
183 | struct list_head list; | |
184 | struct pci_dev *pdev; | |
185 | struct vnic_fc_config config; | |
186 | struct vnic_dev *vdev; | |
187 | unsigned int raw_wq_count; | |
188 | unsigned int wq_copy_count; | |
189 | unsigned int rq_count; | |
190 | int fw_ack_index[FNIC_WQ_COPY_MAX]; | |
191 | unsigned short fw_ack_recd[FNIC_WQ_COPY_MAX]; | |
192 | unsigned short wq_copy_desc_low[FNIC_WQ_COPY_MAX]; | |
193 | unsigned int intr_count; | |
194 | u32 __iomem *legacy_pba; | |
195 | struct fnic_host_tag *tags; | |
196 | mempool_t *io_req_pool; | |
197 | mempool_t *io_sgl_pool[FNIC_SGL_NUM_CACHES]; | |
198 | spinlock_t io_req_lock[FNIC_IO_LOCKS]; /* locks for scsi cmnds */ | |
199 | ||
200 | struct work_struct link_work; | |
201 | struct work_struct frame_work; | |
202 | struct sk_buff_head frame_queue; | |
78112e55 | 203 | struct sk_buff_head tx_queue; |
5df6d737 AJ |
204 | |
205 | /* copy work queue cache line section */ | |
206 | ____cacheline_aligned struct vnic_wq_copy wq_copy[FNIC_WQ_COPY_MAX]; | |
207 | /* completion queue cache line section */ | |
208 | ____cacheline_aligned struct vnic_cq cq[FNIC_CQ_MAX]; | |
209 | ||
210 | spinlock_t wq_copy_lock[FNIC_WQ_COPY_MAX]; | |
211 | ||
212 | /* work queue cache line section */ | |
213 | ____cacheline_aligned struct vnic_wq wq[FNIC_WQ_MAX]; | |
214 | spinlock_t wq_lock[FNIC_WQ_MAX]; | |
215 | ||
216 | /* receive queue cache line section */ | |
217 | ____cacheline_aligned struct vnic_rq rq[FNIC_RQ_MAX]; | |
218 | ||
219 | /* interrupt resource cache line section */ | |
220 | ____cacheline_aligned struct vnic_intr intr[FNIC_MSIX_INTR_MAX]; | |
221 | }; | |
222 | ||
78112e55 JE |
223 | static inline struct fnic *fnic_from_ctlr(struct fcoe_ctlr *fip) |
224 | { | |
225 | return container_of(fip, struct fnic, ctlr); | |
226 | } | |
227 | ||
5df6d737 AJ |
228 | extern struct workqueue_struct *fnic_event_queue; |
229 | extern struct device_attribute *fnic_attrs[]; | |
230 | ||
231 | void fnic_clear_intr_mode(struct fnic *fnic); | |
232 | int fnic_set_intr_mode(struct fnic *fnic); | |
233 | void fnic_free_intr(struct fnic *fnic); | |
234 | int fnic_request_intr(struct fnic *fnic); | |
235 | ||
236 | int fnic_send(struct fc_lport *, struct fc_frame *); | |
237 | void fnic_free_wq_buf(struct vnic_wq *wq, struct vnic_wq_buf *buf); | |
238 | void fnic_handle_frame(struct work_struct *work); | |
239 | void fnic_handle_link(struct work_struct *work); | |
240 | int fnic_rq_cmpl_handler(struct fnic *fnic, int); | |
241 | int fnic_alloc_rq_frame(struct vnic_rq *rq); | |
242 | void fnic_free_rq_buf(struct vnic_rq *rq, struct vnic_rq_buf *buf); | |
78112e55 JE |
243 | void fnic_flush_tx(struct fnic *); |
244 | void fnic_eth_send(struct fcoe_ctlr *, struct sk_buff *skb); | |
245 | void fnic_set_port_id(struct fc_lport *, u32, struct fc_frame *); | |
246 | void fnic_update_mac(struct fc_lport *, u8 *new); | |
247 | void fnic_update_mac_locked(struct fnic *, u8 *new); | |
5df6d737 | 248 | |
f281233d | 249 | int fnic_queuecommand(struct Scsi_Host *, struct scsi_cmnd *); |
5df6d737 AJ |
250 | int fnic_abort_cmd(struct scsi_cmnd *); |
251 | int fnic_device_reset(struct scsi_cmnd *); | |
252 | int fnic_host_reset(struct scsi_cmnd *); | |
253 | int fnic_reset(struct Scsi_Host *); | |
254 | void fnic_scsi_cleanup(struct fc_lport *); | |
255 | void fnic_scsi_abort_io(struct fc_lport *); | |
256 | void fnic_empty_scsi_cleanup(struct fc_lport *); | |
257 | void fnic_exch_mgr_reset(struct fc_lport *, u32, u32); | |
258 | int fnic_wq_copy_cmpl_handler(struct fnic *fnic, int); | |
259 | int fnic_wq_cmpl_handler(struct fnic *fnic, int); | |
78112e55 | 260 | int fnic_flogi_reg_handler(struct fnic *fnic, u32); |
5df6d737 AJ |
261 | void fnic_wq_copy_cleanup_handler(struct vnic_wq_copy *wq, |
262 | struct fcpio_host_req *desc); | |
263 | int fnic_fw_reset_handler(struct fnic *fnic); | |
264 | void fnic_terminate_rport_io(struct fc_rport *); | |
265 | const char *fnic_state_to_str(unsigned int state); | |
266 | ||
267 | void fnic_log_q_error(struct fnic *fnic); | |
268 | void fnic_handle_link_event(struct fnic *fnic); | |
269 | ||
270 | #endif /* _FNIC_H_ */ |