// SPDX-License-Identifier: GPL-2.0-only
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/*
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* IBM Accelerator Family 'GenWQE'
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*
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* (C) Copyright IBM Corp. 2013
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*
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* Author: Frank Haverkamp <haver@linux.vnet.ibm.com>
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* Author: Joerg-Stephan Vogt <jsvogt@de.ibm.com>
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* Author: Michael Jung <mijung@gmx.net>
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* Author: Michael Ruettger <michael@ibmra.de>
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*/
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/*
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* Debugfs interfaces for the GenWQE card. Help to debug potential
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* problems. Dump internal chip state for debugging and failure
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* determination.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <linux/uaccess.h>
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#include "card_base.h"
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#include "card_ddcb.h"
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static void dbg_uidn_show(struct seq_file *s, struct genwqe_reg *regs,
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int entries)
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{
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unsigned int i;
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u32 v_hi, v_lo;
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for (i = 0; i < entries; i++) {
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v_hi = (regs[i].val >> 32) & 0xffffffff;
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v_lo = (regs[i].val) & 0xffffffff;
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seq_printf(s, " 0x%08x 0x%08x 0x%08x 0x%08x EXT_ERR_REC\n",
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regs[i].addr, regs[i].idx, v_hi, v_lo);
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}
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}
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static int curr_dbg_uidn_show(struct seq_file *s, void *unused, int uid)
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{
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struct genwqe_dev *cd = s->private;
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int entries;
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struct genwqe_reg *regs;
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entries = genwqe_ffdc_buff_size(cd, uid);
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if (entries < 0)
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return -EINVAL;
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if (entries == 0)
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return 0;
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regs = kcalloc(entries, sizeof(*regs), GFP_KERNEL);
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if (regs == NULL)
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return -ENOMEM;
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genwqe_stop_traps(cd); /* halt the traps while dumping data */
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genwqe_ffdc_buff_read(cd, uid, regs, entries);
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genwqe_start_traps(cd);
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dbg_uidn_show(s, regs, entries);
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kfree(regs);
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return 0;
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}
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static int curr_dbg_uid0_show(struct seq_file *s, void *unused)
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{
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return curr_dbg_uidn_show(s, unused, 0);
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}
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DEFINE_SHOW_ATTRIBUTE(curr_dbg_uid0);
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static int curr_dbg_uid1_show(struct seq_file *s, void *unused)
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{
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return curr_dbg_uidn_show(s, unused, 1);
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}
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DEFINE_SHOW_ATTRIBUTE(curr_dbg_uid1);
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static int curr_dbg_uid2_show(struct seq_file *s, void *unused)
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{
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return curr_dbg_uidn_show(s, unused, 2);
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}
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DEFINE_SHOW_ATTRIBUTE(curr_dbg_uid2);
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static int prev_dbg_uidn_show(struct seq_file *s, void *unused, int uid)
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{
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struct genwqe_dev *cd = s->private;
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dbg_uidn_show(s, cd->ffdc[uid].regs, cd->ffdc[uid].entries);
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return 0;
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}
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static int prev_dbg_uid0_show(struct seq_file *s, void *unused)
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{
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return prev_dbg_uidn_show(s, unused, 0);
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}
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DEFINE_SHOW_ATTRIBUTE(prev_dbg_uid0);
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static int prev_dbg_uid1_show(struct seq_file *s, void *unused)
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{
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return prev_dbg_uidn_show(s, unused, 1);
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}
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DEFINE_SHOW_ATTRIBUTE(prev_dbg_uid1);
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static int prev_dbg_uid2_show(struct seq_file *s, void *unused)
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{
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return prev_dbg_uidn_show(s, unused, 2);
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}
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DEFINE_SHOW_ATTRIBUTE(prev_dbg_uid2);
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static int curr_regs_show(struct seq_file *s, void *unused)
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{
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struct genwqe_dev *cd = s->private;
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unsigned int i;
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struct genwqe_reg *regs;
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regs = kcalloc(GENWQE_FFDC_REGS, sizeof(*regs), GFP_KERNEL);
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if (regs == NULL)
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return -ENOMEM;
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genwqe_stop_traps(cd);
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genwqe_read_ffdc_regs(cd, regs, GENWQE_FFDC_REGS, 1);
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genwqe_start_traps(cd);
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for (i = 0; i < GENWQE_FFDC_REGS; i++) {
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if (regs[i].addr == 0xffffffff)
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break; /* invalid entries */
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if (regs[i].val == 0x0ull)
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continue; /* do not print 0x0 FIRs */
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seq_printf(s, " 0x%08x 0x%016llx\n",
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regs[i].addr, regs[i].val);
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}
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(curr_regs);
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static int prev_regs_show(struct seq_file *s, void *unused)
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{
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struct genwqe_dev *cd = s->private;
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unsigned int i;
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struct genwqe_reg *regs = cd->ffdc[GENWQE_DBG_REGS].regs;
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if (regs == NULL)
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return -EINVAL;
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for (i = 0; i < GENWQE_FFDC_REGS; i++) {
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if (regs[i].addr == 0xffffffff)
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break; /* invalid entries */
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if (regs[i].val == 0x0ull)
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continue; /* do not print 0x0 FIRs */
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seq_printf(s, " 0x%08x 0x%016llx\n",
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regs[i].addr, regs[i].val);
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}
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(prev_regs);
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static int jtimer_show(struct seq_file *s, void *unused)
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{
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struct genwqe_dev *cd = s->private;
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unsigned int vf_num;
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u64 jtimer;
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jtimer = genwqe_read_vreg(cd, IO_SLC_VF_APPJOB_TIMEOUT, 0);
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seq_printf(s, " PF 0x%016llx %d msec\n", jtimer,
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GENWQE_PF_JOBTIMEOUT_MSEC);
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for (vf_num = 0; vf_num < cd->num_vfs; vf_num++) {
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jtimer = genwqe_read_vreg(cd, IO_SLC_VF_APPJOB_TIMEOUT,
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vf_num + 1);
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seq_printf(s, " VF%-2d 0x%016llx %d msec\n", vf_num, jtimer,
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cd->vf_jobtimeout_msec[vf_num]);
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}
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(jtimer);
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static int queue_working_time_show(struct seq_file *s, void *unused)
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{
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struct genwqe_dev *cd = s->private;
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unsigned int vf_num;
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u64 t;
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t = genwqe_read_vreg(cd, IO_SLC_VF_QUEUE_WTIME, 0);
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seq_printf(s, " PF 0x%016llx\n", t);
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for (vf_num = 0; vf_num < cd->num_vfs; vf_num++) {
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t = genwqe_read_vreg(cd, IO_SLC_VF_QUEUE_WTIME, vf_num + 1);
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seq_printf(s, " VF%-2d 0x%016llx\n", vf_num, t);
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}
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(queue_working_time);
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static int ddcb_info_show(struct seq_file *s, void *unused)
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{
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struct genwqe_dev *cd = s->private;
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unsigned int i;
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struct ddcb_queue *queue;
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struct ddcb *pddcb;
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queue = &cd->queue;
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seq_puts(s, "DDCB QUEUE:\n");
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seq_printf(s, " ddcb_max: %d\n"
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" ddcb_daddr: %016llx - %016llx\n"
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" ddcb_vaddr: %p\n"
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" ddcbs_in_flight: %u\n"
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" ddcbs_max_in_flight: %u\n"
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" ddcbs_completed: %u\n"
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" return_on_busy: %u\n"
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" wait_on_busy: %u\n"
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" irqs_processed: %u\n",
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queue->ddcb_max, (long long)queue->ddcb_daddr,
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(long long)queue->ddcb_daddr +
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(queue->ddcb_max * DDCB_LENGTH),
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queue->ddcb_vaddr, queue->ddcbs_in_flight,
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queue->ddcbs_max_in_flight, queue->ddcbs_completed,
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queue->return_on_busy, queue->wait_on_busy,
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cd->irqs_processed);
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/* Hardware State */
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seq_printf(s, " 0x%08x 0x%016llx IO_QUEUE_CONFIG\n"
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" 0x%08x 0x%016llx IO_QUEUE_STATUS\n"
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" 0x%08x 0x%016llx IO_QUEUE_SEGMENT\n"
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" 0x%08x 0x%016llx IO_QUEUE_INITSQN\n"
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" 0x%08x 0x%016llx IO_QUEUE_WRAP\n"
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" 0x%08x 0x%016llx IO_QUEUE_OFFSET\n"
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" 0x%08x 0x%016llx IO_QUEUE_WTIME\n"
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" 0x%08x 0x%016llx IO_QUEUE_ERRCNTS\n"
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" 0x%08x 0x%016llx IO_QUEUE_LRW\n",
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queue->IO_QUEUE_CONFIG,
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__genwqe_readq(cd, queue->IO_QUEUE_CONFIG),
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queue->IO_QUEUE_STATUS,
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__genwqe_readq(cd, queue->IO_QUEUE_STATUS),
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queue->IO_QUEUE_SEGMENT,
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__genwqe_readq(cd, queue->IO_QUEUE_SEGMENT),
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queue->IO_QUEUE_INITSQN,
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__genwqe_readq(cd, queue->IO_QUEUE_INITSQN),
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queue->IO_QUEUE_WRAP,
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__genwqe_readq(cd, queue->IO_QUEUE_WRAP),
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queue->IO_QUEUE_OFFSET,
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__genwqe_readq(cd, queue->IO_QUEUE_OFFSET),
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queue->IO_QUEUE_WTIME,
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__genwqe_readq(cd, queue->IO_QUEUE_WTIME),
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queue->IO_QUEUE_ERRCNTS,
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__genwqe_readq(cd, queue->IO_QUEUE_ERRCNTS),
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queue->IO_QUEUE_LRW,
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__genwqe_readq(cd, queue->IO_QUEUE_LRW));
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seq_printf(s, "DDCB list (ddcb_act=%d/ddcb_next=%d):\n",
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queue->ddcb_act, queue->ddcb_next);
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pddcb = queue->ddcb_vaddr;
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for (i = 0; i < queue->ddcb_max; i++) {
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seq_printf(s, " %-3d: RETC=%03x SEQ=%04x HSI/SHI=%02x/%02x ",
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i, be16_to_cpu(pddcb->retc_16),
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be16_to_cpu(pddcb->seqnum_16),
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pddcb->hsi, pddcb->shi);
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seq_printf(s, "PRIV=%06llx CMD=%02x\n",
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be64_to_cpu(pddcb->priv_64), pddcb->cmd);
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pddcb++;
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}
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(ddcb_info);
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static int info_show(struct seq_file *s, void *unused)
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{
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struct genwqe_dev *cd = s->private;
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u64 app_id, slu_id, bitstream = -1;
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struct pci_dev *pci_dev = cd->pci_dev;
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slu_id = __genwqe_readq(cd, IO_SLU_UNITCFG);
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app_id = __genwqe_readq(cd, IO_APP_UNITCFG);
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if (genwqe_is_privileged(cd))
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bitstream = __genwqe_readq(cd, IO_SLU_BITSTREAM);
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seq_printf(s, "%s driver version: %s\n"
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" Device Name/Type: %s %s CardIdx: %d\n"
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" SLU/APP Config : 0x%016llx/0x%016llx\n"
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" Build Date : %u/%x/%u\n"
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" Base Clock : %u MHz\n"
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" Arch/SVN Release: %u/%llx\n"
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" Bitstream : %llx\n",
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GENWQE_DEVNAME, DRV_VERSION, dev_name(&pci_dev->dev),
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genwqe_is_privileged(cd) ?
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"Physical" : "Virtual or no SR-IOV",
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cd->card_idx, slu_id, app_id,
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(u16)((slu_id >> 12) & 0x0fLLU), /* month */
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(u16)((slu_id >> 4) & 0xffLLU), /* day */
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(u16)((slu_id >> 16) & 0x0fLLU) + 2010, /* year */
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genwqe_base_clock_frequency(cd),
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(u16)((slu_id >> 32) & 0xffLLU), slu_id >> 40,
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bitstream);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(info);
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void genwqe_init_debugfs(struct genwqe_dev *cd)
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{
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struct dentry *root;
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char card_name[64];
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char name[64];
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unsigned int i;
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sprintf(card_name, "%s%d_card", GENWQE_DEVNAME, cd->card_idx);
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root = debugfs_create_dir(card_name, cd->debugfs_genwqe);
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/* non privileged interfaces are done here */
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debugfs_create_file("ddcb_info", S_IRUGO, root, cd, &ddcb_info_fops);
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debugfs_create_file("info", S_IRUGO, root, cd, &info_fops);
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debugfs_create_x64("err_inject", 0666, root, &cd->err_inject);
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debugfs_create_u32("ddcb_software_timeout", 0666, root,
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&cd->ddcb_software_timeout);
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debugfs_create_u32("kill_timeout", 0666, root, &cd->kill_timeout);
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/* privileged interfaces follow here */
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if (!genwqe_is_privileged(cd)) {
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cd->debugfs_root = root;
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return;
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}
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debugfs_create_file("curr_regs", S_IRUGO, root, cd, &curr_regs_fops);
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debugfs_create_file("curr_dbg_uid0", S_IRUGO, root, cd,
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&curr_dbg_uid0_fops);
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debugfs_create_file("curr_dbg_uid1", S_IRUGO, root, cd,
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&curr_dbg_uid1_fops);
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debugfs_create_file("curr_dbg_uid2", S_IRUGO, root, cd,
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&curr_dbg_uid2_fops);
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debugfs_create_file("prev_regs", S_IRUGO, root, cd, &prev_regs_fops);
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debugfs_create_file("prev_dbg_uid0", S_IRUGO, root, cd,
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&prev_dbg_uid0_fops);
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debugfs_create_file("prev_dbg_uid1", S_IRUGO, root, cd,
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&prev_dbg_uid1_fops);
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debugfs_create_file("prev_dbg_uid2", S_IRUGO, root, cd,
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&prev_dbg_uid2_fops);
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for (i = 0; i < GENWQE_MAX_VFS; i++) {
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sprintf(name, "vf%u_jobtimeout_msec", i);
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debugfs_create_u32(name, 0666, root,
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&cd->vf_jobtimeout_msec[i]);
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}
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debugfs_create_file("jobtimer", S_IRUGO, root, cd, &jtimer_fops);
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debugfs_create_file("queue_working_time", S_IRUGO, root, cd,
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&queue_working_time_fops);
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debugfs_create_u32("skip_recovery", 0666, root, &cd->skip_recovery);
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debugfs_create_u32("use_platform_recovery", 0666, root,
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&cd->use_platform_recovery);
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cd->debugfs_root = root;
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}
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void genqwe_exit_debugfs(struct genwqe_dev *cd)
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{
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debugfs_remove_recursive(cd->debugfs_root);
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}
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