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path: root/drivers/misc/genwqe/card_debugfs.c
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Diffstat (limited to 'drivers/misc/genwqe/card_debugfs.c')
-rw-r--r--drivers/misc/genwqe/card_debugfs.c378
1 files changed, 378 insertions, 0 deletions
diff --git a/drivers/misc/genwqe/card_debugfs.c b/drivers/misc/genwqe/card_debugfs.c
new file mode 100644
index 0000000000..491fb4482d
--- /dev/null
+++ b/drivers/misc/genwqe/card_debugfs.c
@@ -0,0 +1,378 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * IBM Accelerator Family 'GenWQE'
+ *
+ * (C) Copyright IBM Corp. 2013
+ *
+ * Author: Frank Haverkamp <haver@linux.vnet.ibm.com>
+ * Author: Joerg-Stephan Vogt <jsvogt@de.ibm.com>
+ * Author: Michael Jung <mijung@gmx.net>
+ * Author: Michael Ruettger <michael@ibmra.de>
+ */
+
+/*
+ * Debugfs interfaces for the GenWQE card. Help to debug potential
+ * problems. Dump internal chip state for debugging and failure
+ * determination.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#include <linux/uaccess.h>
+
+#include "card_base.h"
+#include "card_ddcb.h"
+
+static void dbg_uidn_show(struct seq_file *s, struct genwqe_reg *regs,
+ int entries)
+{
+ unsigned int i;
+ u32 v_hi, v_lo;
+
+ for (i = 0; i < entries; i++) {
+ v_hi = (regs[i].val >> 32) & 0xffffffff;
+ v_lo = (regs[i].val) & 0xffffffff;
+
+ seq_printf(s, " 0x%08x 0x%08x 0x%08x 0x%08x EXT_ERR_REC\n",
+ regs[i].addr, regs[i].idx, v_hi, v_lo);
+ }
+}
+
+static int curr_dbg_uidn_show(struct seq_file *s, void *unused, int uid)
+{
+ struct genwqe_dev *cd = s->private;
+ int entries;
+ struct genwqe_reg *regs;
+
+ entries = genwqe_ffdc_buff_size(cd, uid);
+ if (entries < 0)
+ return -EINVAL;
+
+ if (entries == 0)
+ return 0;
+
+ regs = kcalloc(entries, sizeof(*regs), GFP_KERNEL);
+ if (regs == NULL)
+ return -ENOMEM;
+
+ genwqe_stop_traps(cd); /* halt the traps while dumping data */
+ genwqe_ffdc_buff_read(cd, uid, regs, entries);
+ genwqe_start_traps(cd);
+
+ dbg_uidn_show(s, regs, entries);
+ kfree(regs);
+ return 0;
+}
+
+static int curr_dbg_uid0_show(struct seq_file *s, void *unused)
+{
+ return curr_dbg_uidn_show(s, unused, 0);
+}
+
+DEFINE_SHOW_ATTRIBUTE(curr_dbg_uid0);
+
+static int curr_dbg_uid1_show(struct seq_file *s, void *unused)
+{
+ return curr_dbg_uidn_show(s, unused, 1);
+}
+
+DEFINE_SHOW_ATTRIBUTE(curr_dbg_uid1);
+
+static int curr_dbg_uid2_show(struct seq_file *s, void *unused)
+{
+ return curr_dbg_uidn_show(s, unused, 2);
+}
+
+DEFINE_SHOW_ATTRIBUTE(curr_dbg_uid2);
+
+static int prev_dbg_uidn_show(struct seq_file *s, void *unused, int uid)
+{
+ struct genwqe_dev *cd = s->private;
+
+ dbg_uidn_show(s, cd->ffdc[uid].regs, cd->ffdc[uid].entries);
+ return 0;
+}
+
+static int prev_dbg_uid0_show(struct seq_file *s, void *unused)
+{
+ return prev_dbg_uidn_show(s, unused, 0);
+}
+
+DEFINE_SHOW_ATTRIBUTE(prev_dbg_uid0);
+
+static int prev_dbg_uid1_show(struct seq_file *s, void *unused)
+{
+ return prev_dbg_uidn_show(s, unused, 1);
+}
+
+DEFINE_SHOW_ATTRIBUTE(prev_dbg_uid1);
+
+static int prev_dbg_uid2_show(struct seq_file *s, void *unused)
+{
+ return prev_dbg_uidn_show(s, unused, 2);
+}
+
+DEFINE_SHOW_ATTRIBUTE(prev_dbg_uid2);
+
+static int curr_regs_show(struct seq_file *s, void *unused)
+{
+ struct genwqe_dev *cd = s->private;
+ unsigned int i;
+ struct genwqe_reg *regs;
+
+ regs = kcalloc(GENWQE_FFDC_REGS, sizeof(*regs), GFP_KERNEL);
+ if (regs == NULL)
+ return -ENOMEM;
+
+ genwqe_stop_traps(cd);
+ genwqe_read_ffdc_regs(cd, regs, GENWQE_FFDC_REGS, 1);
+ genwqe_start_traps(cd);
+
+ for (i = 0; i < GENWQE_FFDC_REGS; i++) {
+ if (regs[i].addr == 0xffffffff)
+ break; /* invalid entries */
+
+ if (regs[i].val == 0x0ull)
+ continue; /* do not print 0x0 FIRs */
+
+ seq_printf(s, " 0x%08x 0x%016llx\n",
+ regs[i].addr, regs[i].val);
+ }
+ return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(curr_regs);
+
+static int prev_regs_show(struct seq_file *s, void *unused)
+{
+ struct genwqe_dev *cd = s->private;
+ unsigned int i;
+ struct genwqe_reg *regs = cd->ffdc[GENWQE_DBG_REGS].regs;
+
+ if (regs == NULL)
+ return -EINVAL;
+
+ for (i = 0; i < GENWQE_FFDC_REGS; i++) {
+ if (regs[i].addr == 0xffffffff)
+ break; /* invalid entries */
+
+ if (regs[i].val == 0x0ull)
+ continue; /* do not print 0x0 FIRs */
+
+ seq_printf(s, " 0x%08x 0x%016llx\n",
+ regs[i].addr, regs[i].val);
+ }
+ return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(prev_regs);
+
+static int jtimer_show(struct seq_file *s, void *unused)
+{
+ struct genwqe_dev *cd = s->private;
+ unsigned int vf_num;
+ u64 jtimer;
+
+ jtimer = genwqe_read_vreg(cd, IO_SLC_VF_APPJOB_TIMEOUT, 0);
+ seq_printf(s, " PF 0x%016llx %d msec\n", jtimer,
+ GENWQE_PF_JOBTIMEOUT_MSEC);
+
+ for (vf_num = 0; vf_num < cd->num_vfs; vf_num++) {
+ jtimer = genwqe_read_vreg(cd, IO_SLC_VF_APPJOB_TIMEOUT,
+ vf_num + 1);
+ seq_printf(s, " VF%-2d 0x%016llx %d msec\n", vf_num, jtimer,
+ cd->vf_jobtimeout_msec[vf_num]);
+ }
+ return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(jtimer);
+
+static int queue_working_time_show(struct seq_file *s, void *unused)
+{
+ struct genwqe_dev *cd = s->private;
+ unsigned int vf_num;
+ u64 t;
+
+ t = genwqe_read_vreg(cd, IO_SLC_VF_QUEUE_WTIME, 0);
+ seq_printf(s, " PF 0x%016llx\n", t);
+
+ for (vf_num = 0; vf_num < cd->num_vfs; vf_num++) {
+ t = genwqe_read_vreg(cd, IO_SLC_VF_QUEUE_WTIME, vf_num + 1);
+ seq_printf(s, " VF%-2d 0x%016llx\n", vf_num, t);
+ }
+ return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(queue_working_time);
+
+static int ddcb_info_show(struct seq_file *s, void *unused)
+{
+ struct genwqe_dev *cd = s->private;
+ unsigned int i;
+ struct ddcb_queue *queue;
+ struct ddcb *pddcb;
+
+ queue = &cd->queue;
+ seq_puts(s, "DDCB QUEUE:\n");
+ seq_printf(s, " ddcb_max: %d\n"
+ " ddcb_daddr: %016llx - %016llx\n"
+ " ddcb_vaddr: %p\n"
+ " ddcbs_in_flight: %u\n"
+ " ddcbs_max_in_flight: %u\n"
+ " ddcbs_completed: %u\n"
+ " return_on_busy: %u\n"
+ " wait_on_busy: %u\n"
+ " irqs_processed: %u\n",
+ queue->ddcb_max, (long long)queue->ddcb_daddr,
+ (long long)queue->ddcb_daddr +
+ (queue->ddcb_max * DDCB_LENGTH),
+ queue->ddcb_vaddr, queue->ddcbs_in_flight,
+ queue->ddcbs_max_in_flight, queue->ddcbs_completed,
+ queue->return_on_busy, queue->wait_on_busy,
+ cd->irqs_processed);
+
+ /* Hardware State */
+ seq_printf(s, " 0x%08x 0x%016llx IO_QUEUE_CONFIG\n"
+ " 0x%08x 0x%016llx IO_QUEUE_STATUS\n"
+ " 0x%08x 0x%016llx IO_QUEUE_SEGMENT\n"
+ " 0x%08x 0x%016llx IO_QUEUE_INITSQN\n"
+ " 0x%08x 0x%016llx IO_QUEUE_WRAP\n"
+ " 0x%08x 0x%016llx IO_QUEUE_OFFSET\n"
+ " 0x%08x 0x%016llx IO_QUEUE_WTIME\n"
+ " 0x%08x 0x%016llx IO_QUEUE_ERRCNTS\n"
+ " 0x%08x 0x%016llx IO_QUEUE_LRW\n",
+ queue->IO_QUEUE_CONFIG,
+ __genwqe_readq(cd, queue->IO_QUEUE_CONFIG),
+ queue->IO_QUEUE_STATUS,
+ __genwqe_readq(cd, queue->IO_QUEUE_STATUS),
+ queue->IO_QUEUE_SEGMENT,
+ __genwqe_readq(cd, queue->IO_QUEUE_SEGMENT),
+ queue->IO_QUEUE_INITSQN,
+ __genwqe_readq(cd, queue->IO_QUEUE_INITSQN),
+ queue->IO_QUEUE_WRAP,
+ __genwqe_readq(cd, queue->IO_QUEUE_WRAP),
+ queue->IO_QUEUE_OFFSET,
+ __genwqe_readq(cd, queue->IO_QUEUE_OFFSET),
+ queue->IO_QUEUE_WTIME,
+ __genwqe_readq(cd, queue->IO_QUEUE_WTIME),
+ queue->IO_QUEUE_ERRCNTS,
+ __genwqe_readq(cd, queue->IO_QUEUE_ERRCNTS),
+ queue->IO_QUEUE_LRW,
+ __genwqe_readq(cd, queue->IO_QUEUE_LRW));
+
+ seq_printf(s, "DDCB list (ddcb_act=%d/ddcb_next=%d):\n",
+ queue->ddcb_act, queue->ddcb_next);
+
+ pddcb = queue->ddcb_vaddr;
+ for (i = 0; i < queue->ddcb_max; i++) {
+ seq_printf(s, " %-3d: RETC=%03x SEQ=%04x HSI/SHI=%02x/%02x ",
+ i, be16_to_cpu(pddcb->retc_16),
+ be16_to_cpu(pddcb->seqnum_16),
+ pddcb->hsi, pddcb->shi);
+ seq_printf(s, "PRIV=%06llx CMD=%02x\n",
+ be64_to_cpu(pddcb->priv_64), pddcb->cmd);
+ pddcb++;
+ }
+ return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(ddcb_info);
+
+static int info_show(struct seq_file *s, void *unused)
+{
+ struct genwqe_dev *cd = s->private;
+ u64 app_id, slu_id, bitstream = -1;
+ struct pci_dev *pci_dev = cd->pci_dev;
+
+ slu_id = __genwqe_readq(cd, IO_SLU_UNITCFG);
+ app_id = __genwqe_readq(cd, IO_APP_UNITCFG);
+
+ if (genwqe_is_privileged(cd))
+ bitstream = __genwqe_readq(cd, IO_SLU_BITSTREAM);
+
+ seq_printf(s, "%s driver version: %s\n"
+ " Device Name/Type: %s %s CardIdx: %d\n"
+ " SLU/APP Config : 0x%016llx/0x%016llx\n"
+ " Build Date : %u/%x/%u\n"
+ " Base Clock : %u MHz\n"
+ " Arch/SVN Release: %u/%llx\n"
+ " Bitstream : %llx\n",
+ GENWQE_DEVNAME, DRV_VERSION, dev_name(&pci_dev->dev),
+ genwqe_is_privileged(cd) ?
+ "Physical" : "Virtual or no SR-IOV",
+ cd->card_idx, slu_id, app_id,
+ (u16)((slu_id >> 12) & 0x0fLLU), /* month */
+ (u16)((slu_id >> 4) & 0xffLLU), /* day */
+ (u16)((slu_id >> 16) & 0x0fLLU) + 2010, /* year */
+ genwqe_base_clock_frequency(cd),
+ (u16)((slu_id >> 32) & 0xffLLU), slu_id >> 40,
+ bitstream);
+
+ return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(info);
+
+void genwqe_init_debugfs(struct genwqe_dev *cd)
+{
+ struct dentry *root;
+ char card_name[64];
+ char name[64];
+ unsigned int i;
+
+ sprintf(card_name, "%s%d_card", GENWQE_DEVNAME, cd->card_idx);
+
+ root = debugfs_create_dir(card_name, cd->debugfs_genwqe);
+
+ /* non privileged interfaces are done here */
+ debugfs_create_file("ddcb_info", S_IRUGO, root, cd, &ddcb_info_fops);
+ debugfs_create_file("info", S_IRUGO, root, cd, &info_fops);
+ debugfs_create_x64("err_inject", 0666, root, &cd->err_inject);
+ debugfs_create_u32("ddcb_software_timeout", 0666, root,
+ &cd->ddcb_software_timeout);
+ debugfs_create_u32("kill_timeout", 0666, root, &cd->kill_timeout);
+
+ /* privileged interfaces follow here */
+ if (!genwqe_is_privileged(cd)) {
+ cd->debugfs_root = root;
+ return;
+ }
+
+ debugfs_create_file("curr_regs", S_IRUGO, root, cd, &curr_regs_fops);
+ debugfs_create_file("curr_dbg_uid0", S_IRUGO, root, cd,
+ &curr_dbg_uid0_fops);
+ debugfs_create_file("curr_dbg_uid1", S_IRUGO, root, cd,
+ &curr_dbg_uid1_fops);
+ debugfs_create_file("curr_dbg_uid2", S_IRUGO, root, cd,
+ &curr_dbg_uid2_fops);
+ debugfs_create_file("prev_regs", S_IRUGO, root, cd, &prev_regs_fops);
+ debugfs_create_file("prev_dbg_uid0", S_IRUGO, root, cd,
+ &prev_dbg_uid0_fops);
+ debugfs_create_file("prev_dbg_uid1", S_IRUGO, root, cd,
+ &prev_dbg_uid1_fops);
+ debugfs_create_file("prev_dbg_uid2", S_IRUGO, root, cd,
+ &prev_dbg_uid2_fops);
+
+ for (i = 0; i < GENWQE_MAX_VFS; i++) {
+ sprintf(name, "vf%u_jobtimeout_msec", i);
+ debugfs_create_u32(name, 0666, root,
+ &cd->vf_jobtimeout_msec[i]);
+ }
+
+ debugfs_create_file("jobtimer", S_IRUGO, root, cd, &jtimer_fops);
+ debugfs_create_file("queue_working_time", S_IRUGO, root, cd,
+ &queue_working_time_fops);
+ debugfs_create_u32("skip_recovery", 0666, root, &cd->skip_recovery);
+ debugfs_create_u32("use_platform_recovery", 0666, root,
+ &cd->use_platform_recovery);
+
+ cd->debugfs_root = root;
+}
+
+void genqwe_exit_debugfs(struct genwqe_dev *cd)
+{
+ debugfs_remove_recursive(cd->debugfs_root);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 09:06:36 +0000