1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
4 #include <linux/printk.h>
5 #include <linux/dynamic_debug.h>
6 #include <linux/module.h>
7 #include <linux/netdevice.h>
8 #include <linux/utsname.h>
9 #include <linux/vermagic.h>
12 #include "ionic_bus.h"
13 #include "ionic_lif.h"
14 #include "ionic_debugfs.h"
16 MODULE_DESCRIPTION(IONIC_DRV_DESCRIPTION);
17 MODULE_AUTHOR("Pensando Systems, Inc");
18 MODULE_LICENSE("GPL");
20 static const char *ionic_error_to_str(enum ionic_status_code code)
23 case IONIC_RC_SUCCESS:
24 return "IONIC_RC_SUCCESS";
25 case IONIC_RC_EVERSION:
26 return "IONIC_RC_EVERSION";
27 case IONIC_RC_EOPCODE:
28 return "IONIC_RC_EOPCODE";
30 return "IONIC_RC_EIO";
32 return "IONIC_RC_EPERM";
34 return "IONIC_RC_EQID";
36 return "IONIC_RC_EQTYPE";
38 return "IONIC_RC_ENOENT";
40 return "IONIC_RC_EINTR";
42 return "IONIC_RC_EAGAIN";
44 return "IONIC_RC_ENOMEM";
46 return "IONIC_RC_EFAULT";
48 return "IONIC_RC_EBUSY";
50 return "IONIC_RC_EEXIST";
52 return "IONIC_RC_EINVAL";
54 return "IONIC_RC_ENOSPC";
56 return "IONIC_RC_ERANGE";
57 case IONIC_RC_BAD_ADDR:
58 return "IONIC_RC_BAD_ADDR";
59 case IONIC_RC_DEV_CMD:
60 return "IONIC_RC_DEV_CMD";
61 case IONIC_RC_ENOSUPP:
62 return "IONIC_RC_ENOSUPP";
64 return "IONIC_RC_ERROR";
66 return "IONIC_RC_ERDMA";
68 return "IONIC_RC_UNKNOWN";
72 static int ionic_error_to_errno(enum ionic_status_code code)
75 case IONIC_RC_SUCCESS:
77 case IONIC_RC_EVERSION:
81 case IONIC_RC_ENOSUPP:
101 case IONIC_RC_BAD_ADDR:
103 case IONIC_RC_EOPCODE:
105 case IONIC_RC_DEV_CMD:
114 static const char *ionic_opcode_to_str(enum ionic_cmd_opcode opcode)
118 return "IONIC_CMD_NOP";
120 return "IONIC_CMD_INIT";
121 case IONIC_CMD_RESET:
122 return "IONIC_CMD_RESET";
123 case IONIC_CMD_IDENTIFY:
124 return "IONIC_CMD_IDENTIFY";
125 case IONIC_CMD_GETATTR:
126 return "IONIC_CMD_GETATTR";
127 case IONIC_CMD_SETATTR:
128 return "IONIC_CMD_SETATTR";
129 case IONIC_CMD_PORT_IDENTIFY:
130 return "IONIC_CMD_PORT_IDENTIFY";
131 case IONIC_CMD_PORT_INIT:
132 return "IONIC_CMD_PORT_INIT";
133 case IONIC_CMD_PORT_RESET:
134 return "IONIC_CMD_PORT_RESET";
135 case IONIC_CMD_PORT_GETATTR:
136 return "IONIC_CMD_PORT_GETATTR";
137 case IONIC_CMD_PORT_SETATTR:
138 return "IONIC_CMD_PORT_SETATTR";
139 case IONIC_CMD_LIF_INIT:
140 return "IONIC_CMD_LIF_INIT";
141 case IONIC_CMD_LIF_RESET:
142 return "IONIC_CMD_LIF_RESET";
143 case IONIC_CMD_LIF_IDENTIFY:
144 return "IONIC_CMD_LIF_IDENTIFY";
145 case IONIC_CMD_LIF_SETATTR:
146 return "IONIC_CMD_LIF_SETATTR";
147 case IONIC_CMD_LIF_GETATTR:
148 return "IONIC_CMD_LIF_GETATTR";
149 case IONIC_CMD_RX_MODE_SET:
150 return "IONIC_CMD_RX_MODE_SET";
151 case IONIC_CMD_RX_FILTER_ADD:
152 return "IONIC_CMD_RX_FILTER_ADD";
153 case IONIC_CMD_RX_FILTER_DEL:
154 return "IONIC_CMD_RX_FILTER_DEL";
155 case IONIC_CMD_Q_INIT:
156 return "IONIC_CMD_Q_INIT";
157 case IONIC_CMD_Q_CONTROL:
158 return "IONIC_CMD_Q_CONTROL";
159 case IONIC_CMD_RDMA_RESET_LIF:
160 return "IONIC_CMD_RDMA_RESET_LIF";
161 case IONIC_CMD_RDMA_CREATE_EQ:
162 return "IONIC_CMD_RDMA_CREATE_EQ";
163 case IONIC_CMD_RDMA_CREATE_CQ:
164 return "IONIC_CMD_RDMA_CREATE_CQ";
165 case IONIC_CMD_RDMA_CREATE_ADMINQ:
166 return "IONIC_CMD_RDMA_CREATE_ADMINQ";
167 case IONIC_CMD_FW_DOWNLOAD:
168 return "IONIC_CMD_FW_DOWNLOAD";
169 case IONIC_CMD_FW_CONTROL:
170 return "IONIC_CMD_FW_CONTROL";
171 case IONIC_CMD_VF_GETATTR:
172 return "IONIC_CMD_VF_GETATTR";
173 case IONIC_CMD_VF_SETATTR:
174 return "IONIC_CMD_VF_SETATTR";
176 return "DEVCMD_UNKNOWN";
180 static void ionic_adminq_flush(struct ionic_lif *lif)
182 struct ionic_queue *adminq = &lif->adminqcq->q;
184 spin_lock(&lif->adminq_lock);
186 while (adminq->tail != adminq->head) {
187 memset(adminq->tail->desc, 0, sizeof(union ionic_adminq_cmd));
188 adminq->tail->cb = NULL;
189 adminq->tail->cb_arg = NULL;
190 adminq->tail = adminq->tail->next;
192 spin_unlock(&lif->adminq_lock);
195 static int ionic_adminq_check_err(struct ionic_lif *lif,
196 struct ionic_admin_ctx *ctx,
199 struct net_device *netdev = lif->netdev;
200 const char *opcode_str;
201 const char *status_str;
204 if (ctx->comp.comp.status || timeout) {
205 opcode_str = ionic_opcode_to_str(ctx->cmd.cmd.opcode);
206 status_str = ionic_error_to_str(ctx->comp.comp.status);
207 err = timeout ? -ETIMEDOUT :
208 ionic_error_to_errno(ctx->comp.comp.status);
210 netdev_err(netdev, "%s (%d) failed: %s (%d)\n",
211 opcode_str, ctx->cmd.cmd.opcode,
212 timeout ? "TIMEOUT" : status_str, err);
215 ionic_adminq_flush(lif);
221 static void ionic_adminq_cb(struct ionic_queue *q,
222 struct ionic_desc_info *desc_info,
223 struct ionic_cq_info *cq_info, void *cb_arg)
225 struct ionic_admin_ctx *ctx = cb_arg;
226 struct ionic_admin_comp *comp;
232 comp = cq_info->cq_desc;
233 dev = &q->lif->netdev->dev;
235 memcpy(&ctx->comp, comp, sizeof(*comp));
237 dev_dbg(dev, "comp admin queue command:\n");
238 dynamic_hex_dump("comp ", DUMP_PREFIX_OFFSET, 16, 1,
239 &ctx->comp, sizeof(ctx->comp), true);
241 complete_all(&ctx->work);
244 static int ionic_adminq_post(struct ionic_lif *lif, struct ionic_admin_ctx *ctx)
246 struct ionic_queue *adminq;
249 WARN_ON(in_interrupt());
254 adminq = &lif->adminqcq->q;
256 spin_lock(&lif->adminq_lock);
257 if (!ionic_q_has_space(adminq, 1)) {
262 err = ionic_heartbeat_check(lif->ionic);
266 memcpy(adminq->head->desc, &ctx->cmd, sizeof(ctx->cmd));
268 dev_dbg(&lif->netdev->dev, "post admin queue command:\n");
269 dynamic_hex_dump("cmd ", DUMP_PREFIX_OFFSET, 16, 1,
270 &ctx->cmd, sizeof(ctx->cmd), true);
272 ionic_q_post(adminq, true, ionic_adminq_cb, ctx);
275 spin_unlock(&lif->adminq_lock);
280 int ionic_adminq_post_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx)
282 struct net_device *netdev = lif->netdev;
283 unsigned long remaining;
287 err = ionic_adminq_post(lif, ctx);
289 if (!test_bit(IONIC_LIF_F_FW_RESET, lif->state)) {
290 name = ionic_opcode_to_str(ctx->cmd.cmd.opcode);
291 netdev_err(netdev, "Posting of %s (%d) failed: %d\n",
292 name, ctx->cmd.cmd.opcode, err);
297 remaining = wait_for_completion_timeout(&ctx->work,
298 HZ * (ulong)DEVCMD_TIMEOUT);
299 return ionic_adminq_check_err(lif, ctx, (remaining == 0));
302 int ionic_napi(struct napi_struct *napi, int budget, ionic_cq_cb cb,
303 ionic_cq_done_cb done_cb, void *done_arg)
305 struct ionic_qcq *qcq = napi_to_qcq(napi);
306 struct ionic_cq *cq = &qcq->cq;
307 u32 work_done, flags = 0;
309 work_done = ionic_cq_service(cq, budget, cb, done_cb, done_arg);
311 if (work_done < budget && napi_complete_done(napi, work_done)) {
312 flags |= IONIC_INTR_CRED_UNMASK;
313 DEBUG_STATS_INTR_REARM(cq->bound_intr);
316 if (work_done || flags) {
317 flags |= IONIC_INTR_CRED_RESET_COALESCE;
318 ionic_intr_credits(cq->lif->ionic->idev.intr_ctrl,
319 cq->bound_intr->index,
323 DEBUG_STATS_NAPI_POLL(qcq, work_done);
328 static void ionic_dev_cmd_clean(struct ionic *ionic)
330 union ionic_dev_cmd_regs *regs = ionic->idev.dev_cmd_regs;
332 iowrite32(0, ®s->doorbell);
333 memset_io(®s->cmd, 0, sizeof(regs->cmd));
336 int ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_seconds)
338 struct ionic_dev *idev = &ionic->idev;
339 unsigned long start_time;
340 unsigned long max_wait;
341 unsigned long duration;
347 WARN_ON(in_interrupt());
349 /* Wait for dev cmd to complete, retrying if we get EAGAIN,
350 * but don't wait any longer than max_seconds.
352 max_wait = jiffies + (max_seconds * HZ);
354 start_time = jiffies;
356 done = ionic_dev_cmd_done(idev);
360 hb = ionic_heartbeat_check(ionic);
361 } while (!done && !hb && time_before(jiffies, max_wait));
362 duration = jiffies - start_time;
364 opcode = idev->dev_cmd_regs->cmd.cmd.opcode;
365 dev_dbg(ionic->dev, "DEVCMD %s (%d) done=%d took %ld secs (%ld jiffies)\n",
366 ionic_opcode_to_str(opcode), opcode,
367 done, duration / HZ, duration);
370 /* It is possible (but unlikely) that FW was busy and missed a
371 * heartbeat check but is still alive and will process this
372 * request, so don't clean the dev_cmd in this case.
374 dev_warn(ionic->dev, "DEVCMD %s (%d) failed - FW halted\n",
375 ionic_opcode_to_str(opcode), opcode);
379 if (!done && !time_before(jiffies, max_wait)) {
380 ionic_dev_cmd_clean(ionic);
381 dev_warn(ionic->dev, "DEVCMD %s (%d) timeout after %ld secs\n",
382 ionic_opcode_to_str(opcode), opcode, max_seconds);
386 err = ionic_dev_cmd_status(&ionic->idev);
388 if (err == IONIC_RC_EAGAIN && !time_after(jiffies, max_wait)) {
389 dev_err(ionic->dev, "DEV_CMD %s (%d) error, %s (%d) retrying...\n",
390 ionic_opcode_to_str(opcode), opcode,
391 ionic_error_to_str(err), err);
394 iowrite32(0, &idev->dev_cmd_regs->done);
395 iowrite32(1, &idev->dev_cmd_regs->doorbell);
399 dev_err(ionic->dev, "DEV_CMD %s (%d) error, %s (%d) failed\n",
400 ionic_opcode_to_str(opcode), opcode,
401 ionic_error_to_str(err), err);
403 return ionic_error_to_errno(err);
409 int ionic_setup(struct ionic *ionic)
413 err = ionic_dev_setup(ionic);
420 int ionic_identify(struct ionic *ionic)
422 struct ionic_identity *ident = &ionic->ident;
423 struct ionic_dev *idev = &ionic->idev;
427 memset(ident, 0, sizeof(*ident));
429 ident->drv.os_type = cpu_to_le32(IONIC_OS_TYPE_LINUX);
430 strncpy(ident->drv.driver_ver_str, UTS_RELEASE,
431 sizeof(ident->drv.driver_ver_str) - 1);
433 mutex_lock(&ionic->dev_cmd_lock);
435 sz = min(sizeof(ident->drv), sizeof(idev->dev_cmd_regs->data));
436 memcpy_toio(&idev->dev_cmd_regs->data, &ident->drv, sz);
438 ionic_dev_cmd_identify(idev, IONIC_IDENTITY_VERSION_1);
439 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
441 sz = min(sizeof(ident->dev), sizeof(idev->dev_cmd_regs->data));
442 memcpy_fromio(&ident->dev, &idev->dev_cmd_regs->data, sz);
445 mutex_unlock(&ionic->dev_cmd_lock);
450 ionic_debugfs_add_ident(ionic);
458 int ionic_init(struct ionic *ionic)
460 struct ionic_dev *idev = &ionic->idev;
463 mutex_lock(&ionic->dev_cmd_lock);
464 ionic_dev_cmd_init(idev);
465 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
466 mutex_unlock(&ionic->dev_cmd_lock);
471 int ionic_reset(struct ionic *ionic)
473 struct ionic_dev *idev = &ionic->idev;
476 mutex_lock(&ionic->dev_cmd_lock);
477 ionic_dev_cmd_reset(idev);
478 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
479 mutex_unlock(&ionic->dev_cmd_lock);
484 int ionic_port_identify(struct ionic *ionic)
486 struct ionic_identity *ident = &ionic->ident;
487 struct ionic_dev *idev = &ionic->idev;
491 mutex_lock(&ionic->dev_cmd_lock);
493 ionic_dev_cmd_port_identify(idev);
494 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
496 sz = min(sizeof(ident->port), sizeof(idev->dev_cmd_regs->data));
497 memcpy_fromio(&ident->port, &idev->dev_cmd_regs->data, sz);
500 mutex_unlock(&ionic->dev_cmd_lock);
505 int ionic_port_init(struct ionic *ionic)
507 struct ionic_identity *ident = &ionic->ident;
508 struct ionic_dev *idev = &ionic->idev;
512 if (!idev->port_info) {
513 idev->port_info_sz = ALIGN(sizeof(*idev->port_info), PAGE_SIZE);
514 idev->port_info = dma_alloc_coherent(ionic->dev,
518 if (!idev->port_info) {
519 dev_err(ionic->dev, "Failed to allocate port info\n");
524 sz = min(sizeof(ident->port.config), sizeof(idev->dev_cmd_regs->data));
526 mutex_lock(&ionic->dev_cmd_lock);
528 memcpy_toio(&idev->dev_cmd_regs->data, &ident->port.config, sz);
529 ionic_dev_cmd_port_init(idev);
530 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
532 ionic_dev_cmd_port_state(&ionic->idev, IONIC_PORT_ADMIN_STATE_UP);
533 (void)ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
535 mutex_unlock(&ionic->dev_cmd_lock);
537 dev_err(ionic->dev, "Failed to init port\n");
538 dma_free_coherent(ionic->dev, idev->port_info_sz,
539 idev->port_info, idev->port_info_pa);
540 idev->port_info = NULL;
541 idev->port_info_pa = 0;
547 int ionic_port_reset(struct ionic *ionic)
549 struct ionic_dev *idev = &ionic->idev;
552 if (!idev->port_info)
555 mutex_lock(&ionic->dev_cmd_lock);
556 ionic_dev_cmd_port_reset(idev);
557 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
558 mutex_unlock(&ionic->dev_cmd_lock);
560 dma_free_coherent(ionic->dev, idev->port_info_sz,
561 idev->port_info, idev->port_info_pa);
563 idev->port_info = NULL;
564 idev->port_info_pa = 0;
567 dev_err(ionic->dev, "Failed to reset port\n");
572 static int __init ionic_init_module(void)
574 ionic_debugfs_create();
575 return ionic_bus_register_driver();
578 static void __exit ionic_cleanup_module(void)
580 ionic_bus_unregister_driver();
581 ionic_debugfs_destroy();
583 pr_info("%s removed\n", IONIC_DRV_NAME);
586 module_init(ionic_init_module);
587 module_exit(ionic_cleanup_module);