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/mutex.h>
8 #include <linux/workqueue.h>
9
10 #include "ionic_if.h"
11 #include "ionic_regs.h"
12
13 #define IONIC_MIN_MTU ETH_MIN_MTU
14 #define IONIC_MAX_MTU 9194
15 #define IONIC_MAX_TXRX_DESC 16384
16 #define IONIC_MIN_TXRX_DESC 16
17 #define IONIC_DEF_TXRX_DESC 4096
18 #define IONIC_LIFS_MAX 1024
19 #define IONIC_ITR_COAL_USEC_DEFAULT 64
20
21 #define IONIC_DEV_CMD_REG_VERSION 1
22 #define IONIC_DEV_INFO_REG_COUNT 32
23 #define IONIC_DEV_CMD_REG_COUNT 32
24
25 struct ionic_dev_bar {
26 void __iomem *vaddr;
27 phys_addr_t bus_addr;
28 unsigned long len;
29 int res_index;
30 };
31
32 /* Registers */
33 static_assert(sizeof(struct ionic_intr) == 32);
34
35 static_assert(sizeof(struct ionic_doorbell) == 8);
36 static_assert(sizeof(struct ionic_intr_status) == 8);
37 static_assert(sizeof(union ionic_dev_regs) == 4096);
38 static_assert(sizeof(union ionic_dev_info_regs) == 2048);
39 static_assert(sizeof(union ionic_dev_cmd_regs) == 2048);
40 static_assert(sizeof(struct ionic_lif_stats) == 1024);
41
42 static_assert(sizeof(struct ionic_admin_cmd) == 64);
43 static_assert(sizeof(struct ionic_admin_comp) == 16);
44 static_assert(sizeof(struct ionic_nop_cmd) == 64);
45 static_assert(sizeof(struct ionic_nop_comp) == 16);
46
47 /* Device commands */
48 static_assert(sizeof(struct ionic_dev_identify_cmd) == 64);
49 static_assert(sizeof(struct ionic_dev_identify_comp) == 16);
50 static_assert(sizeof(struct ionic_dev_init_cmd) == 64);
51 static_assert(sizeof(struct ionic_dev_init_comp) == 16);
52 static_assert(sizeof(struct ionic_dev_reset_cmd) == 64);
53 static_assert(sizeof(struct ionic_dev_reset_comp) == 16);
54 static_assert(sizeof(struct ionic_dev_getattr_cmd) == 64);
55 static_assert(sizeof(struct ionic_dev_getattr_comp) == 16);
56 static_assert(sizeof(struct ionic_dev_setattr_cmd) == 64);
57 static_assert(sizeof(struct ionic_dev_setattr_comp) == 16);
58
59 /* Port commands */
60 static_assert(sizeof(struct ionic_port_identify_cmd) == 64);
61 static_assert(sizeof(struct ionic_port_identify_comp) == 16);
62 static_assert(sizeof(struct ionic_port_init_cmd) == 64);
63 static_assert(sizeof(struct ionic_port_init_comp) == 16);
64 static_assert(sizeof(struct ionic_port_reset_cmd) == 64);
65 static_assert(sizeof(struct ionic_port_reset_comp) == 16);
66 static_assert(sizeof(struct ionic_port_getattr_cmd) == 64);
67 static_assert(sizeof(struct ionic_port_getattr_comp) == 16);
68 static_assert(sizeof(struct ionic_port_setattr_cmd) == 64);
69 static_assert(sizeof(struct ionic_port_setattr_comp) == 16);
70
71 /* LIF commands */
72 static_assert(sizeof(struct ionic_lif_init_cmd) == 64);
73 static_assert(sizeof(struct ionic_lif_init_comp) == 16);
74 static_assert(sizeof(struct ionic_lif_reset_cmd) == 64);
75 static_assert(sizeof(ionic_lif_reset_comp) == 16);
76 static_assert(sizeof(struct ionic_lif_getattr_cmd) == 64);
77 static_assert(sizeof(struct ionic_lif_getattr_comp) == 16);
78 static_assert(sizeof(struct ionic_lif_setattr_cmd) == 64);
79 static_assert(sizeof(struct ionic_lif_setattr_comp) == 16);
80
81 static_assert(sizeof(struct ionic_q_init_cmd) == 64);
82 static_assert(sizeof(struct ionic_q_init_comp) == 16);
83 static_assert(sizeof(struct ionic_q_control_cmd) == 64);
84 static_assert(sizeof(ionic_q_control_comp) == 16);
85
86 static_assert(sizeof(struct ionic_rx_mode_set_cmd) == 64);
87 static_assert(sizeof(ionic_rx_mode_set_comp) == 16);
88 static_assert(sizeof(struct ionic_rx_filter_add_cmd) == 64);
89 static_assert(sizeof(struct ionic_rx_filter_add_comp) == 16);
90 static_assert(sizeof(struct ionic_rx_filter_del_cmd) == 64);
91 static_assert(sizeof(ionic_rx_filter_del_comp) == 16);
92
93 /* RDMA commands */
94 static_assert(sizeof(struct ionic_rdma_reset_cmd) == 64);
95 static_assert(sizeof(struct ionic_rdma_queue_cmd) == 64);
96
97 /* Events */
98 static_assert(sizeof(struct ionic_notifyq_cmd) == 4);
99 static_assert(sizeof(union ionic_notifyq_comp) == 64);
100 static_assert(sizeof(struct ionic_notifyq_event) == 64);
101 static_assert(sizeof(struct ionic_link_change_event) == 64);
102 static_assert(sizeof(struct ionic_reset_event) == 64);
103 static_assert(sizeof(struct ionic_heartbeat_event) == 64);
104 static_assert(sizeof(struct ionic_log_event) == 64);
105
106 /* I/O */
107 static_assert(sizeof(struct ionic_txq_desc) == 16);
108 static_assert(sizeof(struct ionic_txq_sg_desc) == 128);
109 static_assert(sizeof(struct ionic_txq_comp) == 16);
110
111 static_assert(sizeof(struct ionic_rxq_desc) == 16);
112 static_assert(sizeof(struct ionic_rxq_sg_desc) == 128);
113 static_assert(sizeof(struct ionic_rxq_comp) == 16);
114
115 struct ionic_devinfo {
116 u8 asic_type;
117 u8 asic_rev;
118 char fw_version[IONIC_DEVINFO_FWVERS_BUFLEN + 1];
119 char serial_num[IONIC_DEVINFO_SERIAL_BUFLEN + 1];
120 };
121
122 struct ionic_dev {
123 union ionic_dev_info_regs __iomem *dev_info_regs;
124 union ionic_dev_cmd_regs __iomem *dev_cmd_regs;
125
126 u64 __iomem *db_pages;
127 dma_addr_t phy_db_pages;
128
129 struct ionic_intr __iomem *intr_ctrl;
130 u64 __iomem *intr_status;
131
132 u32 port_info_sz;
133 struct ionic_port_info *port_info;
134 dma_addr_t port_info_pa;
135
136 struct ionic_devinfo dev_info;
137 };
138
139 struct ionic_cq_info {
140 void *cq_desc;
141 struct ionic_cq_info *next;
142 unsigned int index;
143 bool last;
144 };
145
146 struct ionic_queue;
147 struct ionic_qcq;
148 struct ionic_desc_info;
149
150 typedef void (*ionic_desc_cb)(struct ionic_queue *q,
151 struct ionic_desc_info *desc_info,
152 struct ionic_cq_info *cq_info, void *cb_arg);
153
154 struct ionic_desc_info {
155 void *desc;
156 void *sg_desc;
157 struct ionic_desc_info *next;
158 unsigned int index;
159 unsigned int left;
160 ionic_desc_cb cb;
161 void *cb_arg;
162 };
163
164 #define QUEUE_NAME_MAX_SZ 32
165
166 struct ionic_queue {
167 u64 dbell_count;
168 u64 drop;
169 u64 stop;
170 u64 wake;
171 struct ionic_lif *lif;
172 struct ionic_desc_info *info;
173 struct ionic_desc_info *tail;
174 struct ionic_desc_info *head;
175 struct ionic_dev *idev;
176 unsigned int index;
177 unsigned int type;
178 unsigned int hw_index;
179 unsigned int hw_type;
180 u64 dbval;
181 void *base;
182 void *sg_base;
183 dma_addr_t base_pa;
184 dma_addr_t sg_base_pa;
185 unsigned int num_descs;
186 unsigned int desc_size;
187 unsigned int sg_desc_size;
188 unsigned int pid;
189 char name[QUEUE_NAME_MAX_SZ];
190 };
191
192 #define INTR_INDEX_NOT_ASSIGNED -1
193 #define INTR_NAME_MAX_SZ 32
194
195 struct ionic_intr_info {
196 char name[INTR_NAME_MAX_SZ];
197 unsigned int index;
198 unsigned int vector;
199 u64 rearm_count;
200 unsigned int cpu;
201 cpumask_t affinity_mask;
202 };
203
204 struct ionic_cq {
205 void *base;
206 dma_addr_t base_pa;
207 struct ionic_lif *lif;
208 struct ionic_cq_info *info;
209 struct ionic_cq_info *tail;
210 struct ionic_queue *bound_q;
211 struct ionic_intr_info *bound_intr;
212 bool done_color;
213 unsigned int num_descs;
214 u64 compl_count;
215 unsigned int desc_size;
216 };
217
218 struct ionic;
219
ionic_intr_init(struct ionic_dev * idev,struct ionic_intr_info * intr,unsigned long index)220 static inline void ionic_intr_init(struct ionic_dev *idev,
221 struct ionic_intr_info *intr,
222 unsigned long index)
223 {
224 ionic_intr_clean(idev->intr_ctrl, index);
225 intr->index = index;
226 }
227
ionic_q_space_avail(struct ionic_queue * q)228 static inline unsigned int ionic_q_space_avail(struct ionic_queue *q)
229 {
230 unsigned int avail = q->tail->index;
231
232 if (q->head->index >= avail)
233 avail += q->head->left - 1;
234 else
235 avail -= q->head->index + 1;
236
237 return avail;
238 }
239
ionic_q_has_space(struct ionic_queue * q,unsigned int want)240 static inline bool ionic_q_has_space(struct ionic_queue *q, unsigned int want)
241 {
242 return ionic_q_space_avail(q) >= want;
243 }
244
245 void ionic_init_devinfo(struct ionic *ionic);
246 int ionic_dev_setup(struct ionic *ionic);
247 void ionic_dev_teardown(struct ionic *ionic);
248
249 void ionic_dev_cmd_go(struct ionic_dev *idev, union ionic_dev_cmd *cmd);
250 u8 ionic_dev_cmd_status(struct ionic_dev *idev);
251 bool ionic_dev_cmd_done(struct ionic_dev *idev);
252 void ionic_dev_cmd_comp(struct ionic_dev *idev, union ionic_dev_cmd_comp *comp);
253
254 void ionic_dev_cmd_identify(struct ionic_dev *idev, u8 ver);
255 void ionic_dev_cmd_init(struct ionic_dev *idev);
256 void ionic_dev_cmd_reset(struct ionic_dev *idev);
257
258 void ionic_dev_cmd_port_identify(struct ionic_dev *idev);
259 void ionic_dev_cmd_port_init(struct ionic_dev *idev);
260 void ionic_dev_cmd_port_reset(struct ionic_dev *idev);
261 void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state);
262 void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed);
263 void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable);
264 void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type);
265 void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type);
266
267 void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver);
268 void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index,
269 dma_addr_t addr);
270 void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index);
271 void ionic_dev_cmd_adminq_init(struct ionic_dev *idev, struct ionic_qcq *qcq,
272 u16 lif_index, u16 intr_index);
273
274 int ionic_db_page_num(struct ionic_lif *lif, int pid);
275
276 int ionic_cq_init(struct ionic_lif *lif, struct ionic_cq *cq,
277 struct ionic_intr_info *intr,
278 unsigned int num_descs, size_t desc_size);
279 void ionic_cq_map(struct ionic_cq *cq, void *base, dma_addr_t base_pa);
280 void ionic_cq_bind(struct ionic_cq *cq, struct ionic_queue *q);
281 typedef bool (*ionic_cq_cb)(struct ionic_cq *cq, struct ionic_cq_info *cq_info);
282 typedef void (*ionic_cq_done_cb)(void *done_arg);
283 unsigned int ionic_cq_service(struct ionic_cq *cq, unsigned int work_to_do,
284 ionic_cq_cb cb, ionic_cq_done_cb done_cb,
285 void *done_arg);
286
287 int ionic_q_init(struct ionic_lif *lif, struct ionic_dev *idev,
288 struct ionic_queue *q, unsigned int index, const char *name,
289 unsigned int num_descs, size_t desc_size,
290 size_t sg_desc_size, unsigned int pid);
291 void ionic_q_map(struct ionic_queue *q, void *base, dma_addr_t base_pa);
292 void ionic_q_sg_map(struct ionic_queue *q, void *base, dma_addr_t base_pa);
293 void ionic_q_post(struct ionic_queue *q, bool ring_doorbell, ionic_desc_cb cb,
294 void *cb_arg);
295 void ionic_q_rewind(struct ionic_queue *q, struct ionic_desc_info *start);
296 void ionic_q_service(struct ionic_queue *q, struct ionic_cq_info *cq_info,
297 unsigned int stop_index);
298
299 #endif /* _IONIC_DEV_H_ */
300
