1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
3
4 #ifndef _IONIC_DEV_H_
5 #define _IONIC_DEV_H_
6
7 #include <linux/atomic.h>
8 #include <linux/mutex.h>
9 #include <linux/workqueue.h>
10
11 #include "ionic_if.h"
12 #include "ionic_regs.h"
13
14 #define IONIC_MAX_TX_DESC 8192
15 #define IONIC_MAX_RX_DESC 16384
16 #define IONIC_MIN_TXRX_DESC 64
17 #define IONIC_DEF_TXRX_DESC 4096
18 #define IONIC_RX_FILL_THRESHOLD 16
19 #define IONIC_RX_FILL_DIV 8
20 #define IONIC_LIFS_MAX 1024
21 #define IONIC_WATCHDOG_SECS 5
22 #define IONIC_ITR_COAL_USEC_DEFAULT 64
23
24 #define IONIC_DEV_CMD_REG_VERSION 1
25 #define IONIC_DEV_INFO_REG_COUNT 32
26 #define IONIC_DEV_CMD_REG_COUNT 32
27
28 struct ionic_dev_bar {
29 void __iomem *vaddr;
30 phys_addr_t bus_addr;
31 unsigned long len;
32 int res_index;
33 };
34
35 #ifndef __CHECKER__
36 /* Registers */
37 static_assert(sizeof(struct ionic_intr) == 32);
38
39 static_assert(sizeof(struct ionic_doorbell) == 8);
40 static_assert(sizeof(struct ionic_intr_status) == 8);
41 static_assert(sizeof(union ionic_dev_regs) == 4096);
42 static_assert(sizeof(union ionic_dev_info_regs) == 2048);
43 static_assert(sizeof(union ionic_dev_cmd_regs) == 2048);
44 static_assert(sizeof(struct ionic_lif_stats) == 1024);
45
46 static_assert(sizeof(struct ionic_admin_cmd) == 64);
47 static_assert(sizeof(struct ionic_admin_comp) == 16);
48 static_assert(sizeof(struct ionic_nop_cmd) == 64);
49 static_assert(sizeof(struct ionic_nop_comp) == 16);
50
51 /* Device commands */
52 static_assert(sizeof(struct ionic_dev_identify_cmd) == 64);
53 static_assert(sizeof(struct ionic_dev_identify_comp) == 16);
54 static_assert(sizeof(struct ionic_dev_init_cmd) == 64);
55 static_assert(sizeof(struct ionic_dev_init_comp) == 16);
56 static_assert(sizeof(struct ionic_dev_reset_cmd) == 64);
57 static_assert(sizeof(struct ionic_dev_reset_comp) == 16);
58 static_assert(sizeof(struct ionic_dev_getattr_cmd) == 64);
59 static_assert(sizeof(struct ionic_dev_getattr_comp) == 16);
60 static_assert(sizeof(struct ionic_dev_setattr_cmd) == 64);
61 static_assert(sizeof(struct ionic_dev_setattr_comp) == 16);
62 static_assert(sizeof(struct ionic_lif_setphc_cmd) == 64);
63
64 /* Port commands */
65 static_assert(sizeof(struct ionic_port_identify_cmd) == 64);
66 static_assert(sizeof(struct ionic_port_identify_comp) == 16);
67 static_assert(sizeof(struct ionic_port_init_cmd) == 64);
68 static_assert(sizeof(struct ionic_port_init_comp) == 16);
69 static_assert(sizeof(struct ionic_port_reset_cmd) == 64);
70 static_assert(sizeof(struct ionic_port_reset_comp) == 16);
71 static_assert(sizeof(struct ionic_port_getattr_cmd) == 64);
72 static_assert(sizeof(struct ionic_port_getattr_comp) == 16);
73 static_assert(sizeof(struct ionic_port_setattr_cmd) == 64);
74 static_assert(sizeof(struct ionic_port_setattr_comp) == 16);
75
76 /* LIF commands */
77 static_assert(sizeof(struct ionic_lif_init_cmd) == 64);
78 static_assert(sizeof(struct ionic_lif_init_comp) == 16);
79 static_assert(sizeof(struct ionic_lif_reset_cmd) == 64);
80 static_assert(sizeof(ionic_lif_reset_comp) == 16);
81 static_assert(sizeof(struct ionic_lif_getattr_cmd) == 64);
82 static_assert(sizeof(struct ionic_lif_getattr_comp) == 16);
83 static_assert(sizeof(struct ionic_lif_setattr_cmd) == 64);
84 static_assert(sizeof(struct ionic_lif_setattr_comp) == 16);
85
86 static_assert(sizeof(struct ionic_q_init_cmd) == 64);
87 static_assert(sizeof(struct ionic_q_init_comp) == 16);
88 static_assert(sizeof(struct ionic_q_control_cmd) == 64);
89 static_assert(sizeof(ionic_q_control_comp) == 16);
90 static_assert(sizeof(struct ionic_q_identify_cmd) == 64);
91 static_assert(sizeof(struct ionic_q_identify_comp) == 16);
92
93 static_assert(sizeof(struct ionic_rx_mode_set_cmd) == 64);
94 static_assert(sizeof(ionic_rx_mode_set_comp) == 16);
95 static_assert(sizeof(struct ionic_rx_filter_add_cmd) == 64);
96 static_assert(sizeof(struct ionic_rx_filter_add_comp) == 16);
97 static_assert(sizeof(struct ionic_rx_filter_del_cmd) == 64);
98 static_assert(sizeof(ionic_rx_filter_del_comp) == 16);
99
100 /* RDMA commands */
101 static_assert(sizeof(struct ionic_rdma_reset_cmd) == 64);
102 static_assert(sizeof(struct ionic_rdma_queue_cmd) == 64);
103
104 /* Events */
105 static_assert(sizeof(struct ionic_notifyq_cmd) == 4);
106 static_assert(sizeof(union ionic_notifyq_comp) == 64);
107 static_assert(sizeof(struct ionic_notifyq_event) == 64);
108 static_assert(sizeof(struct ionic_link_change_event) == 64);
109 static_assert(sizeof(struct ionic_reset_event) == 64);
110 static_assert(sizeof(struct ionic_heartbeat_event) == 64);
111 static_assert(sizeof(struct ionic_log_event) == 64);
112
113 /* I/O */
114 static_assert(sizeof(struct ionic_txq_desc) == 16);
115 static_assert(sizeof(struct ionic_txq_sg_desc) == 128);
116 static_assert(sizeof(struct ionic_txq_comp) == 16);
117
118 static_assert(sizeof(struct ionic_rxq_desc) == 16);
119 static_assert(sizeof(struct ionic_rxq_sg_desc) == 128);
120 static_assert(sizeof(struct ionic_rxq_comp) == 16);
121
122 /* SR/IOV */
123 static_assert(sizeof(struct ionic_vf_setattr_cmd) == 64);
124 static_assert(sizeof(struct ionic_vf_setattr_comp) == 16);
125 static_assert(sizeof(struct ionic_vf_getattr_cmd) == 64);
126 static_assert(sizeof(struct ionic_vf_getattr_comp) == 16);
127 #endif /* __CHECKER__ */
128
129 struct ionic_devinfo {
130 u8 asic_type;
131 u8 asic_rev;
132 char fw_version[IONIC_DEVINFO_FWVERS_BUFLEN + 1];
133 char serial_num[IONIC_DEVINFO_SERIAL_BUFLEN + 1];
134 };
135
136 struct ionic_dev {
137 union ionic_dev_info_regs __iomem *dev_info_regs;
138 union ionic_dev_cmd_regs __iomem *dev_cmd_regs;
139 struct ionic_hwstamp_regs __iomem *hwstamp_regs;
140
141 atomic_long_t last_check_time;
142 unsigned long last_hb_time;
143 u32 last_fw_hb;
144 bool fw_hb_ready;
145 bool fw_status_ready;
146 u8 fw_generation;
147 u8 opcode;
148
149 u64 __iomem *db_pages;
150 dma_addr_t phy_db_pages;
151
152 struct ionic_intr __iomem *intr_ctrl;
153 u64 __iomem *intr_status;
154
155 u32 port_info_sz;
156 struct ionic_port_info *port_info;
157 dma_addr_t port_info_pa;
158
159 struct ionic_devinfo dev_info;
160 };
161
162 struct ionic_cq_info {
163 union {
164 void *cq_desc;
165 struct ionic_admin_comp *admincq;
166 struct ionic_notifyq_event *notifyq;
167 };
168 };
169
170 struct ionic_queue;
171 struct ionic_qcq;
172 struct ionic_desc_info;
173
174 typedef void (*ionic_desc_cb)(struct ionic_queue *q,
175 struct ionic_desc_info *desc_info,
176 struct ionic_cq_info *cq_info, void *cb_arg);
177
178 #define IONIC_MAX_BUF_LEN ((u16)-1)
179 #define IONIC_PAGE_SIZE PAGE_SIZE
180 #define IONIC_PAGE_SPLIT_SZ (PAGE_SIZE / 2)
181 #define IONIC_PAGE_GFP_MASK (GFP_ATOMIC | __GFP_NOWARN |\
182 __GFP_COMP | __GFP_MEMALLOC)
183
184 struct ionic_buf_info {
185 struct page *page;
186 dma_addr_t dma_addr;
187 u32 page_offset;
188 u32 len;
189 };
190
191 #define IONIC_MAX_FRAGS (1 + IONIC_TX_MAX_SG_ELEMS_V1)
192
193 struct ionic_desc_info {
194 union {
195 void *desc;
196 struct ionic_txq_desc *txq_desc;
197 struct ionic_rxq_desc *rxq_desc;
198 struct ionic_admin_cmd *adminq_desc;
199 };
200 union {
201 void *sg_desc;
202 struct ionic_txq_sg_desc *txq_sg_desc;
203 struct ionic_rxq_sg_desc *rxq_sgl_desc;
204 };
205 unsigned int bytes;
206 unsigned int nbufs;
207 struct ionic_buf_info bufs[IONIC_MAX_FRAGS];
208 ionic_desc_cb cb;
209 void *cb_arg;
210 };
211
212 #define IONIC_QUEUE_NAME_MAX_SZ 16
213
214 struct ionic_queue {
215 struct device *dev;
216 struct ionic_lif *lif;
217 struct ionic_desc_info *info;
218 u64 dbval;
219 u16 head_idx;
220 u16 tail_idx;
221 unsigned int index;
222 unsigned int num_descs;
223 unsigned int max_sg_elems;
224 u64 features;
225 u64 dbell_count;
226 u64 stop;
227 u64 wake;
228 u64 drop;
229 struct ionic_dev *idev;
230 unsigned int type;
231 unsigned int hw_index;
232 unsigned int hw_type;
233 union {
234 void *base;
235 struct ionic_txq_desc *txq;
236 struct ionic_rxq_desc *rxq;
237 struct ionic_admin_cmd *adminq;
238 };
239 union {
240 void *sg_base;
241 struct ionic_txq_sg_desc *txq_sgl;
242 struct ionic_rxq_sg_desc *rxq_sgl;
243 };
244 dma_addr_t base_pa;
245 dma_addr_t sg_base_pa;
246 unsigned int desc_size;
247 unsigned int sg_desc_size;
248 unsigned int pid;
249 char name[IONIC_QUEUE_NAME_MAX_SZ];
250 } ____cacheline_aligned_in_smp;
251
252 #define IONIC_INTR_INDEX_NOT_ASSIGNED -1
253 #define IONIC_INTR_NAME_MAX_SZ 32
254
255 struct ionic_intr_info {
256 char name[IONIC_INTR_NAME_MAX_SZ];
257 unsigned int index;
258 unsigned int vector;
259 u64 rearm_count;
260 unsigned int cpu;
261 cpumask_t affinity_mask;
262 u32 dim_coal_hw;
263 };
264
265 struct ionic_cq {
266 struct ionic_lif *lif;
267 struct ionic_cq_info *info;
268 struct ionic_queue *bound_q;
269 struct ionic_intr_info *bound_intr;
270 u16 tail_idx;
271 bool done_color;
272 unsigned int num_descs;
273 unsigned int desc_size;
274 u64 compl_count;
275 void *base;
276 dma_addr_t base_pa;
277 } ____cacheline_aligned_in_smp;
278
279 struct ionic;
280
ionic_intr_init(struct ionic_dev * idev,struct ionic_intr_info * intr,unsigned long index)281 static inline void ionic_intr_init(struct ionic_dev *idev,
282 struct ionic_intr_info *intr,
283 unsigned long index)
284 {
285 ionic_intr_clean(idev->intr_ctrl, index);
286 intr->index = index;
287 }
288
ionic_q_space_avail(struct ionic_queue * q)289 static inline unsigned int ionic_q_space_avail(struct ionic_queue *q)
290 {
291 unsigned int avail = q->tail_idx;
292
293 if (q->head_idx >= avail)
294 avail += q->num_descs - q->head_idx - 1;
295 else
296 avail -= q->head_idx + 1;
297
298 return avail;
299 }
300
ionic_q_has_space(struct ionic_queue * q,unsigned int want)301 static inline bool ionic_q_has_space(struct ionic_queue *q, unsigned int want)
302 {
303 return ionic_q_space_avail(q) >= want;
304 }
305
306 void ionic_init_devinfo(struct ionic *ionic);
307 int ionic_dev_setup(struct ionic *ionic);
308
309 void ionic_dev_cmd_go(struct ionic_dev *idev, union ionic_dev_cmd *cmd);
310 u8 ionic_dev_cmd_status(struct ionic_dev *idev);
311 bool ionic_dev_cmd_done(struct ionic_dev *idev);
312 void ionic_dev_cmd_comp(struct ionic_dev *idev, union ionic_dev_cmd_comp *comp);
313
314 void ionic_dev_cmd_identify(struct ionic_dev *idev, u8 ver);
315 void ionic_dev_cmd_init(struct ionic_dev *idev);
316 void ionic_dev_cmd_reset(struct ionic_dev *idev);
317
318 void ionic_dev_cmd_port_identify(struct ionic_dev *idev);
319 void ionic_dev_cmd_port_init(struct ionic_dev *idev);
320 void ionic_dev_cmd_port_reset(struct ionic_dev *idev);
321 void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state);
322 void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed);
323 void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable);
324 void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type);
325 void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type);
326
327 int ionic_set_vf_config(struct ionic *ionic, int vf, u8 attr, u8 *data);
328 void ionic_dev_cmd_queue_identify(struct ionic_dev *idev,
329 u16 lif_type, u8 qtype, u8 qver);
330 void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver);
331 void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index,
332 dma_addr_t addr);
333 void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index);
334 void ionic_dev_cmd_adminq_init(struct ionic_dev *idev, struct ionic_qcq *qcq,
335 u16 lif_index, u16 intr_index);
336
337 int ionic_db_page_num(struct ionic_lif *lif, int pid);
338
339 int ionic_cq_init(struct ionic_lif *lif, struct ionic_cq *cq,
340 struct ionic_intr_info *intr,
341 unsigned int num_descs, size_t desc_size);
342 void ionic_cq_map(struct ionic_cq *cq, void *base, dma_addr_t base_pa);
343 void ionic_cq_bind(struct ionic_cq *cq, struct ionic_queue *q);
344 typedef bool (*ionic_cq_cb)(struct ionic_cq *cq, struct ionic_cq_info *cq_info);
345 typedef void (*ionic_cq_done_cb)(void *done_arg);
346 unsigned int ionic_cq_service(struct ionic_cq *cq, unsigned int work_to_do,
347 ionic_cq_cb cb, ionic_cq_done_cb done_cb,
348 void *done_arg);
349
350 int ionic_q_init(struct ionic_lif *lif, struct ionic_dev *idev,
351 struct ionic_queue *q, unsigned int index, const char *name,
352 unsigned int num_descs, size_t desc_size,
353 size_t sg_desc_size, unsigned int pid);
354 void ionic_q_map(struct ionic_queue *q, void *base, dma_addr_t base_pa);
355 void ionic_q_sg_map(struct ionic_queue *q, void *base, dma_addr_t base_pa);
356 void ionic_q_post(struct ionic_queue *q, bool ring_doorbell, ionic_desc_cb cb,
357 void *cb_arg);
358 void ionic_q_rewind(struct ionic_queue *q, struct ionic_desc_info *start);
359 void ionic_q_service(struct ionic_queue *q, struct ionic_cq_info *cq_info,
360 unsigned int stop_index);
361 int ionic_heartbeat_check(struct ionic *ionic);
362 bool ionic_is_fw_running(struct ionic_dev *idev);
363
364 #endif /* _IONIC_DEV_H_ */
365