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
148 u64 __iomem *db_pages;
149 dma_addr_t phy_db_pages;
150
151 struct ionic_intr __iomem *intr_ctrl;
152 u64 __iomem *intr_status;
153
154 u32 port_info_sz;
155 struct ionic_port_info *port_info;
156 dma_addr_t port_info_pa;
157
158 struct ionic_devinfo dev_info;
159 };
160
161 struct ionic_cq_info {
162 union {
163 void *cq_desc;
164 struct ionic_admin_comp *admincq;
165 struct ionic_notifyq_event *notifyq;
166 };
167 };
168
169 struct ionic_queue;
170 struct ionic_qcq;
171 struct ionic_desc_info;
172
173 typedef void (*ionic_desc_cb)(struct ionic_queue *q,
174 struct ionic_desc_info *desc_info,
175 struct ionic_cq_info *cq_info, void *cb_arg);
176
177 #define IONIC_PAGE_SIZE PAGE_SIZE
178 #define IONIC_PAGE_SPLIT_SZ (PAGE_SIZE / 2)
179 #define IONIC_PAGE_GFP_MASK (GFP_ATOMIC | __GFP_NOWARN |\
180 __GFP_COMP | __GFP_MEMALLOC)
181
182 struct ionic_buf_info {
183 struct page *page;
184 dma_addr_t dma_addr;
185 u32 page_offset;
186 u32 len;
187 };
188
189 #define IONIC_MAX_FRAGS (1 + IONIC_TX_MAX_SG_ELEMS_V1)
190
191 struct ionic_desc_info {
192 union {
193 void *desc;
194 struct ionic_txq_desc *txq_desc;
195 struct ionic_rxq_desc *rxq_desc;
196 struct ionic_admin_cmd *adminq_desc;
197 };
198 union {
199 void *sg_desc;
200 struct ionic_txq_sg_desc *txq_sg_desc;
201 struct ionic_rxq_sg_desc *rxq_sgl_desc;
202 };
203 unsigned int bytes;
204 unsigned int nbufs;
205 struct ionic_buf_info bufs[IONIC_MAX_FRAGS];
206 ionic_desc_cb cb;
207 void *cb_arg;
208 };
209
210 #define IONIC_QUEUE_NAME_MAX_SZ 32
211
212 struct ionic_queue {
213 struct device *dev;
214 struct ionic_lif *lif;
215 struct ionic_desc_info *info;
216 u64 dbval;
217 u16 head_idx;
218 u16 tail_idx;
219 unsigned int index;
220 unsigned int num_descs;
221 unsigned int max_sg_elems;
222 u64 features;
223 u64 drop;
224 struct ionic_dev *idev;
225 unsigned int type;
226 unsigned int hw_index;
227 unsigned int hw_type;
228 union {
229 void *base;
230 struct ionic_txq_desc *txq;
231 struct ionic_rxq_desc *rxq;
232 struct ionic_admin_cmd *adminq;
233 };
234 union {
235 void *sg_base;
236 struct ionic_txq_sg_desc *txq_sgl;
237 struct ionic_rxq_sg_desc *rxq_sgl;
238 };
239 dma_addr_t base_pa;
240 dma_addr_t sg_base_pa;
241 unsigned int desc_size;
242 unsigned int sg_desc_size;
243 unsigned int pid;
244 char name[IONIC_QUEUE_NAME_MAX_SZ];
245 } ____cacheline_aligned_in_smp;
246
247 #define IONIC_INTR_INDEX_NOT_ASSIGNED -1
248 #define IONIC_INTR_NAME_MAX_SZ 32
249
250 struct ionic_intr_info {
251 char name[IONIC_INTR_NAME_MAX_SZ];
252 unsigned int index;
253 unsigned int vector;
254 u64 rearm_count;
255 unsigned int cpu;
256 cpumask_t affinity_mask;
257 u32 dim_coal_hw;
258 };
259
260 struct ionic_cq {
261 struct ionic_lif *lif;
262 struct ionic_cq_info *info;
263 struct ionic_queue *bound_q;
264 struct ionic_intr_info *bound_intr;
265 u16 tail_idx;
266 bool done_color;
267 unsigned int num_descs;
268 unsigned int desc_size;
269 void *base;
270 dma_addr_t base_pa;
271 } ____cacheline_aligned_in_smp;
272
273 struct ionic;
274
ionic_intr_init(struct ionic_dev * idev,struct ionic_intr_info * intr,unsigned long index)275 static inline void ionic_intr_init(struct ionic_dev *idev,
276 struct ionic_intr_info *intr,
277 unsigned long index)
278 {
279 ionic_intr_clean(idev->intr_ctrl, index);
280 intr->index = index;
281 }
282
ionic_q_space_avail(struct ionic_queue * q)283 static inline unsigned int ionic_q_space_avail(struct ionic_queue *q)
284 {
285 unsigned int avail = q->tail_idx;
286
287 if (q->head_idx >= avail)
288 avail += q->num_descs - q->head_idx - 1;
289 else
290 avail -= q->head_idx + 1;
291
292 return avail;
293 }
294
ionic_q_has_space(struct ionic_queue * q,unsigned int want)295 static inline bool ionic_q_has_space(struct ionic_queue *q, unsigned int want)
296 {
297 return ionic_q_space_avail(q) >= want;
298 }
299
300 void ionic_init_devinfo(struct ionic *ionic);
301 int ionic_dev_setup(struct ionic *ionic);
302
303 void ionic_dev_cmd_go(struct ionic_dev *idev, union ionic_dev_cmd *cmd);
304 u8 ionic_dev_cmd_status(struct ionic_dev *idev);
305 bool ionic_dev_cmd_done(struct ionic_dev *idev);
306 void ionic_dev_cmd_comp(struct ionic_dev *idev, union ionic_dev_cmd_comp *comp);
307
308 void ionic_dev_cmd_identify(struct ionic_dev *idev, u8 ver);
309 void ionic_dev_cmd_init(struct ionic_dev *idev);
310 void ionic_dev_cmd_reset(struct ionic_dev *idev);
311
312 void ionic_dev_cmd_port_identify(struct ionic_dev *idev);
313 void ionic_dev_cmd_port_init(struct ionic_dev *idev);
314 void ionic_dev_cmd_port_reset(struct ionic_dev *idev);
315 void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state);
316 void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed);
317 void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable);
318 void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type);
319 void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type);
320
321 int ionic_set_vf_config(struct ionic *ionic, int vf,
322 struct ionic_vf_setattr_cmd *vfc);
323 int ionic_dev_cmd_vf_getattr(struct ionic *ionic, int vf, u8 attr,
324 struct ionic_vf_getattr_comp *comp);
325 void ionic_dev_cmd_queue_identify(struct ionic_dev *idev,
326 u16 lif_type, u8 qtype, u8 qver);
327 void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver);
328 void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index,
329 dma_addr_t addr);
330 void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index);
331 void ionic_dev_cmd_adminq_init(struct ionic_dev *idev, struct ionic_qcq *qcq,
332 u16 lif_index, u16 intr_index);
333
334 int ionic_db_page_num(struct ionic_lif *lif, int pid);
335
336 int ionic_cq_init(struct ionic_lif *lif, struct ionic_cq *cq,
337 struct ionic_intr_info *intr,
338 unsigned int num_descs, size_t desc_size);
339 void ionic_cq_map(struct ionic_cq *cq, void *base, dma_addr_t base_pa);
340 void ionic_cq_bind(struct ionic_cq *cq, struct ionic_queue *q);
341 typedef bool (*ionic_cq_cb)(struct ionic_cq *cq, struct ionic_cq_info *cq_info);
342 typedef void (*ionic_cq_done_cb)(void *done_arg);
343 unsigned int ionic_cq_service(struct ionic_cq *cq, unsigned int work_to_do,
344 ionic_cq_cb cb, ionic_cq_done_cb done_cb,
345 void *done_arg);
346
347 int ionic_q_init(struct ionic_lif *lif, struct ionic_dev *idev,
348 struct ionic_queue *q, unsigned int index, const char *name,
349 unsigned int num_descs, size_t desc_size,
350 size_t sg_desc_size, unsigned int pid);
351 void ionic_q_map(struct ionic_queue *q, void *base, dma_addr_t base_pa);
352 void ionic_q_sg_map(struct ionic_queue *q, void *base, dma_addr_t base_pa);
353 void ionic_q_post(struct ionic_queue *q, bool ring_doorbell, ionic_desc_cb cb,
354 void *cb_arg);
355 void ionic_q_rewind(struct ionic_queue *q, struct ionic_desc_info *start);
356 void ionic_q_service(struct ionic_queue *q, struct ionic_cq_info *cq_info,
357 unsigned int stop_index);
358 int ionic_heartbeat_check(struct ionic *ionic);
359 bool ionic_is_fw_running(struct ionic_dev *idev);
360
361 #endif /* _IONIC_DEV_H_ */
362