2 * IBM Accelerator Family 'GenWQE'
4 * (C) Copyright IBM Corp. 2013
6 * Author: Frank Haverkamp <haver@linux.vnet.ibm.com>
7 * Author: Joerg-Stephan Vogt <jsvogt@de.ibm.com>
8 * Author: Michael Jung <mijung@gmx.net>
9 * Author: Michael Ruettger <michael@ibmra.de>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License (version 2 only)
13 * as published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
22 * Debugfs interfaces for the GenWQE card. Help to debug potential
23 * problems. Dump internal chip state for debugging and failure
27 #include <linux/module.h>
28 #include <linux/kernel.h>
29 #include <linux/debugfs.h>
30 #include <linux/seq_file.h>
31 #include <linux/uaccess.h>
33 #include "card_base.h"
34 #include "card_ddcb.h"
36 #define GENWQE_DEBUGFS_RO(_name, _showfn) \
37 static int genwqe_debugfs_##_name##_open(struct inode *inode, \
40 return single_open(file, _showfn, inode->i_private); \
42 static const struct file_operations genwqe_##_name##_fops = { \
43 .open = genwqe_debugfs_##_name##_open, \
45 .llseek = seq_lseek, \
46 .release = single_release, \
49 static void dbg_uidn_show(struct seq_file *s, struct genwqe_reg *regs,
55 for (i = 0; i < entries; i++) {
56 v_hi = (regs[i].val >> 32) & 0xffffffff;
57 v_lo = (regs[i].val) & 0xffffffff;
59 seq_printf(s, " 0x%08x 0x%08x 0x%08x 0x%08x EXT_ERR_REC\n",
60 regs[i].addr, regs[i].idx, v_hi, v_lo);
64 static int curr_dbg_uidn_show(struct seq_file *s, void *unused, int uid)
66 struct genwqe_dev *cd = s->private;
68 struct genwqe_reg *regs;
70 entries = genwqe_ffdc_buff_size(cd, uid);
77 regs = kcalloc(entries, sizeof(*regs), GFP_KERNEL);
81 genwqe_stop_traps(cd); /* halt the traps while dumping data */
82 genwqe_ffdc_buff_read(cd, uid, regs, entries);
83 genwqe_start_traps(cd);
85 dbg_uidn_show(s, regs, entries);
90 static int genwqe_curr_dbg_uid0_show(struct seq_file *s, void *unused)
92 return curr_dbg_uidn_show(s, unused, 0);
95 GENWQE_DEBUGFS_RO(curr_dbg_uid0, genwqe_curr_dbg_uid0_show);
97 static int genwqe_curr_dbg_uid1_show(struct seq_file *s, void *unused)
99 return curr_dbg_uidn_show(s, unused, 1);
102 GENWQE_DEBUGFS_RO(curr_dbg_uid1, genwqe_curr_dbg_uid1_show);
104 static int genwqe_curr_dbg_uid2_show(struct seq_file *s, void *unused)
106 return curr_dbg_uidn_show(s, unused, 2);
109 GENWQE_DEBUGFS_RO(curr_dbg_uid2, genwqe_curr_dbg_uid2_show);
111 static int prev_dbg_uidn_show(struct seq_file *s, void *unused, int uid)
113 struct genwqe_dev *cd = s->private;
115 dbg_uidn_show(s, cd->ffdc[uid].regs, cd->ffdc[uid].entries);
119 static int genwqe_prev_dbg_uid0_show(struct seq_file *s, void *unused)
121 return prev_dbg_uidn_show(s, unused, 0);
124 GENWQE_DEBUGFS_RO(prev_dbg_uid0, genwqe_prev_dbg_uid0_show);
126 static int genwqe_prev_dbg_uid1_show(struct seq_file *s, void *unused)
128 return prev_dbg_uidn_show(s, unused, 1);
131 GENWQE_DEBUGFS_RO(prev_dbg_uid1, genwqe_prev_dbg_uid1_show);
133 static int genwqe_prev_dbg_uid2_show(struct seq_file *s, void *unused)
135 return prev_dbg_uidn_show(s, unused, 2);
138 GENWQE_DEBUGFS_RO(prev_dbg_uid2, genwqe_prev_dbg_uid2_show);
140 static int genwqe_curr_regs_show(struct seq_file *s, void *unused)
142 struct genwqe_dev *cd = s->private;
144 struct genwqe_reg *regs;
146 regs = kcalloc(GENWQE_FFDC_REGS, sizeof(*regs), GFP_KERNEL);
150 genwqe_stop_traps(cd);
151 genwqe_read_ffdc_regs(cd, regs, GENWQE_FFDC_REGS, 1);
152 genwqe_start_traps(cd);
154 for (i = 0; i < GENWQE_FFDC_REGS; i++) {
155 if (regs[i].addr == 0xffffffff)
156 break; /* invalid entries */
158 if (regs[i].val == 0x0ull)
159 continue; /* do not print 0x0 FIRs */
161 seq_printf(s, " 0x%08x 0x%016llx\n",
162 regs[i].addr, regs[i].val);
167 GENWQE_DEBUGFS_RO(curr_regs, genwqe_curr_regs_show);
169 static int genwqe_prev_regs_show(struct seq_file *s, void *unused)
171 struct genwqe_dev *cd = s->private;
173 struct genwqe_reg *regs = cd->ffdc[GENWQE_DBG_REGS].regs;
178 for (i = 0; i < GENWQE_FFDC_REGS; i++) {
179 if (regs[i].addr == 0xffffffff)
180 break; /* invalid entries */
182 if (regs[i].val == 0x0ull)
183 continue; /* do not print 0x0 FIRs */
185 seq_printf(s, " 0x%08x 0x%016llx\n",
186 regs[i].addr, regs[i].val);
191 GENWQE_DEBUGFS_RO(prev_regs, genwqe_prev_regs_show);
193 static int genwqe_jtimer_show(struct seq_file *s, void *unused)
195 struct genwqe_dev *cd = s->private;
199 jtimer = genwqe_read_vreg(cd, IO_SLC_VF_APPJOB_TIMEOUT, 0);
200 seq_printf(s, " PF 0x%016llx %d msec\n", jtimer,
201 genwqe_pf_jobtimeout_msec);
203 for (vf_num = 0; vf_num < cd->num_vfs; vf_num++) {
204 jtimer = genwqe_read_vreg(cd, IO_SLC_VF_APPJOB_TIMEOUT,
206 seq_printf(s, " VF%-2d 0x%016llx %d msec\n", vf_num, jtimer,
207 cd->vf_jobtimeout_msec[vf_num]);
212 GENWQE_DEBUGFS_RO(jtimer, genwqe_jtimer_show);
214 static int genwqe_queue_working_time_show(struct seq_file *s, void *unused)
216 struct genwqe_dev *cd = s->private;
220 t = genwqe_read_vreg(cd, IO_SLC_VF_QUEUE_WTIME, 0);
221 seq_printf(s, " PF 0x%016llx\n", t);
223 for (vf_num = 0; vf_num < cd->num_vfs; vf_num++) {
224 t = genwqe_read_vreg(cd, IO_SLC_VF_QUEUE_WTIME, vf_num + 1);
225 seq_printf(s, " VF%-2d 0x%016llx\n", vf_num, t);
230 GENWQE_DEBUGFS_RO(queue_working_time, genwqe_queue_working_time_show);
232 static int genwqe_ddcb_info_show(struct seq_file *s, void *unused)
234 struct genwqe_dev *cd = s->private;
236 struct ddcb_queue *queue;
240 seq_puts(s, "DDCB QUEUE:\n");
241 seq_printf(s, " ddcb_max: %d\n"
242 " ddcb_daddr: %016llx - %016llx\n"
243 " ddcb_vaddr: %016llx\n"
244 " ddcbs_in_flight: %u\n"
245 " ddcbs_max_in_flight: %u\n"
246 " ddcbs_completed: %u\n"
247 " return_on_busy: %u\n"
248 " wait_on_busy: %u\n"
249 " irqs_processed: %u\n",
250 queue->ddcb_max, (long long)queue->ddcb_daddr,
251 (long long)queue->ddcb_daddr +
252 (queue->ddcb_max * DDCB_LENGTH),
253 (long long)queue->ddcb_vaddr, queue->ddcbs_in_flight,
254 queue->ddcbs_max_in_flight, queue->ddcbs_completed,
255 queue->return_on_busy, queue->wait_on_busy,
259 seq_printf(s, " 0x%08x 0x%016llx IO_QUEUE_CONFIG\n"
260 " 0x%08x 0x%016llx IO_QUEUE_STATUS\n"
261 " 0x%08x 0x%016llx IO_QUEUE_SEGMENT\n"
262 " 0x%08x 0x%016llx IO_QUEUE_INITSQN\n"
263 " 0x%08x 0x%016llx IO_QUEUE_WRAP\n"
264 " 0x%08x 0x%016llx IO_QUEUE_OFFSET\n"
265 " 0x%08x 0x%016llx IO_QUEUE_WTIME\n"
266 " 0x%08x 0x%016llx IO_QUEUE_ERRCNTS\n"
267 " 0x%08x 0x%016llx IO_QUEUE_LRW\n",
268 queue->IO_QUEUE_CONFIG,
269 __genwqe_readq(cd, queue->IO_QUEUE_CONFIG),
270 queue->IO_QUEUE_STATUS,
271 __genwqe_readq(cd, queue->IO_QUEUE_STATUS),
272 queue->IO_QUEUE_SEGMENT,
273 __genwqe_readq(cd, queue->IO_QUEUE_SEGMENT),
274 queue->IO_QUEUE_INITSQN,
275 __genwqe_readq(cd, queue->IO_QUEUE_INITSQN),
276 queue->IO_QUEUE_WRAP,
277 __genwqe_readq(cd, queue->IO_QUEUE_WRAP),
278 queue->IO_QUEUE_OFFSET,
279 __genwqe_readq(cd, queue->IO_QUEUE_OFFSET),
280 queue->IO_QUEUE_WTIME,
281 __genwqe_readq(cd, queue->IO_QUEUE_WTIME),
282 queue->IO_QUEUE_ERRCNTS,
283 __genwqe_readq(cd, queue->IO_QUEUE_ERRCNTS),
285 __genwqe_readq(cd, queue->IO_QUEUE_LRW));
287 seq_printf(s, "DDCB list (ddcb_act=%d/ddcb_next=%d):\n",
288 queue->ddcb_act, queue->ddcb_next);
290 pddcb = queue->ddcb_vaddr;
291 for (i = 0; i < queue->ddcb_max; i++) {
292 seq_printf(s, " %-3d: RETC=%03x SEQ=%04x HSI/SHI=%02x/%02x ",
293 i, be16_to_cpu(pddcb->retc_16),
294 be16_to_cpu(pddcb->seqnum_16),
295 pddcb->hsi, pddcb->shi);
296 seq_printf(s, "PRIV=%06llx CMD=%02x\n",
297 be64_to_cpu(pddcb->priv_64), pddcb->cmd);
303 GENWQE_DEBUGFS_RO(ddcb_info, genwqe_ddcb_info_show);
305 static int genwqe_info_show(struct seq_file *s, void *unused)
307 struct genwqe_dev *cd = s->private;
309 u64 app_id, slu_id, bitstream = -1;
310 struct pci_dev *pci_dev = cd->pci_dev;
312 slu_id = __genwqe_readq(cd, IO_SLU_UNITCFG);
313 app_id = __genwqe_readq(cd, IO_APP_UNITCFG);
315 if (genwqe_is_privileged(cd))
316 bitstream = __genwqe_readq(cd, IO_SLU_BITSTREAM);
318 val16 = (u16)(slu_id & 0x0fLLU);
319 type = (u16)((slu_id >> 20) & 0xffLLU);
321 seq_printf(s, "%s driver version: %s\n"
322 " Device Name/Type: %s %s CardIdx: %d\n"
323 " SLU/APP Config : 0x%016llx/0x%016llx\n"
324 " Build Date : %u/%x/%u\n"
325 " Base Clock : %u MHz\n"
326 " Arch/SVN Release: %u/%llx\n"
327 " Bitstream : %llx\n",
328 GENWQE_DEVNAME, DRV_VERSION, dev_name(&pci_dev->dev),
329 genwqe_is_privileged(cd) ?
330 "Physical" : "Virtual or no SR-IOV",
331 cd->card_idx, slu_id, app_id,
332 (u16)((slu_id >> 12) & 0x0fLLU), /* month */
333 (u16)((slu_id >> 4) & 0xffLLU), /* day */
334 (u16)((slu_id >> 16) & 0x0fLLU) + 2010, /* year */
335 genwqe_base_clock_frequency(cd),
336 (u16)((slu_id >> 32) & 0xffLLU), slu_id >> 40,
342 GENWQE_DEBUGFS_RO(info, genwqe_info_show);
344 int genwqe_init_debugfs(struct genwqe_dev *cd)
353 sprintf(card_name, "%s%d_card", GENWQE_DEVNAME, cd->card_idx);
355 root = debugfs_create_dir(card_name, cd->debugfs_genwqe);
361 /* non privileged interfaces are done here */
362 file = debugfs_create_file("ddcb_info", S_IRUGO, root, cd,
363 &genwqe_ddcb_info_fops);
369 file = debugfs_create_file("info", S_IRUGO, root, cd,
376 file = debugfs_create_x64("err_inject", 0666, root, &cd->err_inject);
382 file = debugfs_create_u32("ddcb_software_timeout", 0666, root,
383 &cd->ddcb_software_timeout);
389 file = debugfs_create_u32("kill_timeout", 0666, root,
396 /* privileged interfaces follow here */
397 if (!genwqe_is_privileged(cd)) {
398 cd->debugfs_root = root;
402 file = debugfs_create_file("curr_regs", S_IRUGO, root, cd,
403 &genwqe_curr_regs_fops);
409 file = debugfs_create_file("curr_dbg_uid0", S_IRUGO, root, cd,
410 &genwqe_curr_dbg_uid0_fops);
416 file = debugfs_create_file("curr_dbg_uid1", S_IRUGO, root, cd,
417 &genwqe_curr_dbg_uid1_fops);
423 file = debugfs_create_file("curr_dbg_uid2", S_IRUGO, root, cd,
424 &genwqe_curr_dbg_uid2_fops);
430 file = debugfs_create_file("prev_regs", S_IRUGO, root, cd,
431 &genwqe_prev_regs_fops);
437 file = debugfs_create_file("prev_dbg_uid0", S_IRUGO, root, cd,
438 &genwqe_prev_dbg_uid0_fops);
444 file = debugfs_create_file("prev_dbg_uid1", S_IRUGO, root, cd,
445 &genwqe_prev_dbg_uid1_fops);
451 file = debugfs_create_file("prev_dbg_uid2", S_IRUGO, root, cd,
452 &genwqe_prev_dbg_uid2_fops);
458 for (i = 0; i < GENWQE_MAX_VFS; i++) {
459 sprintf(name, "vf%u_jobtimeout_msec", i);
461 file = debugfs_create_u32(name, 0666, root,
462 &cd->vf_jobtimeout_msec[i]);
469 file = debugfs_create_file("jobtimer", S_IRUGO, root, cd,
470 &genwqe_jtimer_fops);
476 file = debugfs_create_file("queue_working_time", S_IRUGO, root, cd,
477 &genwqe_queue_working_time_fops);
483 file = debugfs_create_u32("skip_recovery", 0666, root,
490 file = debugfs_create_u32("use_platform_recovery", 0666, root,
491 &cd->use_platform_recovery);
497 cd->debugfs_root = root;
500 debugfs_remove_recursive(root);
505 void genqwe_exit_debugfs(struct genwqe_dev *cd)
507 debugfs_remove_recursive(cd->debugfs_root);