Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Mike Marciniszyn | 4086 | 62.98% | 5 | 15.62% |
Dean Luick | 1576 | 24.29% | 7 | 21.88% |
Josh Collier | 272 | 4.19% | 1 | 3.12% |
Kaike Wan | 213 | 3.28% | 2 | 6.25% |
Greg Kroah-Hartman | 102 | 1.57% | 1 | 3.12% |
Michael J. Ruhl | 73 | 1.13% | 4 | 12.50% |
Tadeusz Struk | 51 | 0.79% | 1 | 3.12% |
Mitko Haralanov | 31 | 0.48% | 1 | 3.12% |
Don Hiatt | 30 | 0.46% | 1 | 3.12% |
Christoph Hellwig | 20 | 0.31% | 1 | 3.12% |
Nicolai Stange | 14 | 0.22% | 1 | 3.12% |
Matthew Wilcox | 10 | 0.15% | 1 | 3.12% |
Dennis Dalessandro | 4 | 0.06% | 2 | 6.25% |
Niranjana Vishwanathapura | 3 | 0.05% | 1 | 3.12% |
Krzysztof Kozlowski | 1 | 0.02% | 1 | 3.12% |
Jubin John | 1 | 0.02% | 1 | 3.12% |
caihuoqing | 1 | 0.02% | 1 | 3.12% |
Total | 6488 | 32 |
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* * Copyright(c) 2015-2018 Intel Corporation. */ #include <linux/debugfs.h> #include <linux/seq_file.h> #include <linux/kernel.h> #include <linux/export.h> #include <linux/string.h> #include <linux/types.h> #include <linux/ratelimit.h> #include <linux/fault-inject.h> #include "hfi.h" #include "trace.h" #include "debugfs.h" #include "device.h" #include "qp.h" #include "sdma.h" #include "fault.h" static struct dentry *hfi1_dbg_root; /* wrappers to enforce srcu in seq file */ ssize_t hfi1_seq_read(struct file *file, char __user *buf, size_t size, loff_t *ppos) { struct dentry *d = file->f_path.dentry; ssize_t r; r = debugfs_file_get(d); if (unlikely(r)) return r; r = seq_read(file, buf, size, ppos); debugfs_file_put(d); return r; } loff_t hfi1_seq_lseek(struct file *file, loff_t offset, int whence) { struct dentry *d = file->f_path.dentry; loff_t r; r = debugfs_file_get(d); if (unlikely(r)) return r; r = seq_lseek(file, offset, whence); debugfs_file_put(d); return r; } #define private2dd(file) (file_inode(file)->i_private) #define private2ppd(file) (file_inode(file)->i_private) static void *_opcode_stats_seq_start(struct seq_file *s, loff_t *pos) { struct hfi1_opcode_stats_perctx *opstats; if (*pos >= ARRAY_SIZE(opstats->stats)) return NULL; return pos; } static void *_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos) { struct hfi1_opcode_stats_perctx *opstats; ++*pos; if (*pos >= ARRAY_SIZE(opstats->stats)) return NULL; return pos; } static void _opcode_stats_seq_stop(struct seq_file *s, void *v) { } static int opcode_stats_show(struct seq_file *s, u8 i, u64 packets, u64 bytes) { if (!packets && !bytes) return SEQ_SKIP; seq_printf(s, "%02x %llu/%llu\n", i, (unsigned long long)packets, (unsigned long long)bytes); return 0; } static int _opcode_stats_seq_show(struct seq_file *s, void *v) { loff_t *spos = v; loff_t i = *spos, j; u64 n_packets = 0, n_bytes = 0; struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; struct hfi1_devdata *dd = dd_from_dev(ibd); struct hfi1_ctxtdata *rcd; for (j = 0; j < dd->first_dyn_alloc_ctxt; j++) { rcd = hfi1_rcd_get_by_index(dd, j); if (rcd) { n_packets += rcd->opstats->stats[i].n_packets; n_bytes += rcd->opstats->stats[i].n_bytes; } hfi1_rcd_put(rcd); } return opcode_stats_show(s, i, n_packets, n_bytes); } DEBUGFS_SEQ_FILE_OPS(opcode_stats); DEBUGFS_SEQ_FILE_OPEN(opcode_stats) DEBUGFS_FILE_OPS(opcode_stats); static void *_tx_opcode_stats_seq_start(struct seq_file *s, loff_t *pos) { return _opcode_stats_seq_start(s, pos); } static void *_tx_opcode_stats_seq_next(struct seq_file *s, void *v, loff_t *pos) { return _opcode_stats_seq_next(s, v, pos); } static void _tx_opcode_stats_seq_stop(struct seq_file *s, void *v) { } static int _tx_opcode_stats_seq_show(struct seq_file *s, void *v) { loff_t *spos = v; loff_t i = *spos; int j; u64 n_packets = 0, n_bytes = 0; struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; struct hfi1_devdata *dd = dd_from_dev(ibd); for_each_possible_cpu(j) { struct hfi1_opcode_stats_perctx *s = per_cpu_ptr(dd->tx_opstats, j); n_packets += s->stats[i].n_packets; n_bytes += s->stats[i].n_bytes; } return opcode_stats_show(s, i, n_packets, n_bytes); } DEBUGFS_SEQ_FILE_OPS(tx_opcode_stats); DEBUGFS_SEQ_FILE_OPEN(tx_opcode_stats) DEBUGFS_FILE_OPS(tx_opcode_stats); static void *_ctx_stats_seq_start(struct seq_file *s, loff_t *pos) { struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; struct hfi1_devdata *dd = dd_from_dev(ibd); if (!*pos) return SEQ_START_TOKEN; if (*pos >= dd->first_dyn_alloc_ctxt) return NULL; return pos; } static void *_ctx_stats_seq_next(struct seq_file *s, void *v, loff_t *pos) { struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; struct hfi1_devdata *dd = dd_from_dev(ibd); if (v == SEQ_START_TOKEN) return pos; ++*pos; if (*pos >= dd->first_dyn_alloc_ctxt) return NULL; return pos; } static void _ctx_stats_seq_stop(struct seq_file *s, void *v) { /* nothing allocated */ } static int _ctx_stats_seq_show(struct seq_file *s, void *v) { loff_t *spos; loff_t i, j; u64 n_packets = 0; struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; struct hfi1_devdata *dd = dd_from_dev(ibd); struct hfi1_ctxtdata *rcd; if (v == SEQ_START_TOKEN) { seq_puts(s, "Ctx:npkts\n"); return 0; } spos = v; i = *spos; rcd = hfi1_rcd_get_by_index_safe(dd, i); if (!rcd) return SEQ_SKIP; for (j = 0; j < ARRAY_SIZE(rcd->opstats->stats); j++) n_packets += rcd->opstats->stats[j].n_packets; hfi1_rcd_put(rcd); if (!n_packets) return SEQ_SKIP; seq_printf(s, " %llu:%llu\n", i, n_packets); return 0; } DEBUGFS_SEQ_FILE_OPS(ctx_stats); DEBUGFS_SEQ_FILE_OPEN(ctx_stats) DEBUGFS_FILE_OPS(ctx_stats); static void *_qp_stats_seq_start(struct seq_file *s, loff_t *pos) __acquires(RCU) { struct rvt_qp_iter *iter; loff_t n = *pos; iter = rvt_qp_iter_init(s->private, 0, NULL); /* stop calls rcu_read_unlock */ rcu_read_lock(); if (!iter) return NULL; do { if (rvt_qp_iter_next(iter)) { kfree(iter); return NULL; } } while (n--); return iter; } static void *_qp_stats_seq_next(struct seq_file *s, void *iter_ptr, loff_t *pos) __must_hold(RCU) { struct rvt_qp_iter *iter = iter_ptr; (*pos)++; if (rvt_qp_iter_next(iter)) { kfree(iter); return NULL; } return iter; } static void _qp_stats_seq_stop(struct seq_file *s, void *iter_ptr) __releases(RCU) { rcu_read_unlock(); } static int _qp_stats_seq_show(struct seq_file *s, void *iter_ptr) { struct rvt_qp_iter *iter = iter_ptr; if (!iter) return 0; qp_iter_print(s, iter); return 0; } DEBUGFS_SEQ_FILE_OPS(qp_stats); DEBUGFS_SEQ_FILE_OPEN(qp_stats) DEBUGFS_FILE_OPS(qp_stats); static void *_sdes_seq_start(struct seq_file *s, loff_t *pos) { struct hfi1_ibdev *ibd; struct hfi1_devdata *dd; ibd = (struct hfi1_ibdev *)s->private; dd = dd_from_dev(ibd); if (!dd->per_sdma || *pos >= dd->num_sdma) return NULL; return pos; } static void *_sdes_seq_next(struct seq_file *s, void *v, loff_t *pos) { struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; struct hfi1_devdata *dd = dd_from_dev(ibd); ++*pos; if (!dd->per_sdma || *pos >= dd->num_sdma) return NULL; return pos; } static void _sdes_seq_stop(struct seq_file *s, void *v) { } static int _sdes_seq_show(struct seq_file *s, void *v) { struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; struct hfi1_devdata *dd = dd_from_dev(ibd); loff_t *spos = v; loff_t i = *spos; sdma_seqfile_dump_sde(s, &dd->per_sdma[i]); return 0; } DEBUGFS_SEQ_FILE_OPS(sdes); DEBUGFS_SEQ_FILE_OPEN(sdes) DEBUGFS_FILE_OPS(sdes); static void *_rcds_seq_start(struct seq_file *s, loff_t *pos) { struct hfi1_ibdev *ibd; struct hfi1_devdata *dd; ibd = (struct hfi1_ibdev *)s->private; dd = dd_from_dev(ibd); if (!dd->rcd || *pos >= dd->n_krcv_queues) return NULL; return pos; } static void *_rcds_seq_next(struct seq_file *s, void *v, loff_t *pos) { struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; struct hfi1_devdata *dd = dd_from_dev(ibd); ++*pos; if (!dd->rcd || *pos >= dd->num_rcv_contexts) return NULL; return pos; } static void _rcds_seq_stop(struct seq_file *s, void *v) { } static int _rcds_seq_show(struct seq_file *s, void *v) { struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; struct hfi1_devdata *dd = dd_from_dev(ibd); struct hfi1_ctxtdata *rcd; loff_t *spos = v; loff_t i = *spos; rcd = hfi1_rcd_get_by_index_safe(dd, i); if (rcd) seqfile_dump_rcd(s, rcd); hfi1_rcd_put(rcd); return 0; } DEBUGFS_SEQ_FILE_OPS(rcds); DEBUGFS_SEQ_FILE_OPEN(rcds) DEBUGFS_FILE_OPS(rcds); static void *_pios_seq_start(struct seq_file *s, loff_t *pos) { struct hfi1_ibdev *ibd; struct hfi1_devdata *dd; ibd = (struct hfi1_ibdev *)s->private; dd = dd_from_dev(ibd); if (!dd->send_contexts || *pos >= dd->num_send_contexts) return NULL; return pos; } static void *_pios_seq_next(struct seq_file *s, void *v, loff_t *pos) { struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; struct hfi1_devdata *dd = dd_from_dev(ibd); ++*pos; if (!dd->send_contexts || *pos >= dd->num_send_contexts) return NULL; return pos; } static void _pios_seq_stop(struct seq_file *s, void *v) { } static int _pios_seq_show(struct seq_file *s, void *v) { struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; struct hfi1_devdata *dd = dd_from_dev(ibd); struct send_context_info *sci; loff_t *spos = v; loff_t i = *spos; unsigned long flags; spin_lock_irqsave(&dd->sc_lock, flags); sci = &dd->send_contexts[i]; if (sci && sci->type != SC_USER && sci->allocated && sci->sc) seqfile_dump_sci(s, i, sci); spin_unlock_irqrestore(&dd->sc_lock, flags); return 0; } DEBUGFS_SEQ_FILE_OPS(pios); DEBUGFS_SEQ_FILE_OPEN(pios) DEBUGFS_FILE_OPS(pios); /* read the per-device counters */ static ssize_t dev_counters_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { u64 *counters; size_t avail; struct hfi1_devdata *dd; ssize_t rval; dd = private2dd(file); avail = hfi1_read_cntrs(dd, NULL, &counters); rval = simple_read_from_buffer(buf, count, ppos, counters, avail); return rval; } /* read the per-device counters */ static ssize_t dev_names_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { char *names; size_t avail; struct hfi1_devdata *dd; ssize_t rval; dd = private2dd(file); avail = hfi1_read_cntrs(dd, &names, NULL); rval = simple_read_from_buffer(buf, count, ppos, names, avail); return rval; } struct counter_info { char *name; const struct file_operations ops; }; /* * Could use file_inode(file)->i_ino to figure out which file, * instead of separate routine for each, but for now, this works... */ /* read the per-port names (same for each port) */ static ssize_t portnames_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { char *names; size_t avail; struct hfi1_devdata *dd; ssize_t rval; dd = private2dd(file); avail = hfi1_read_portcntrs(dd->pport, &names, NULL); rval = simple_read_from_buffer(buf, count, ppos, names, avail); return rval; } /* read the per-port counters */ static ssize_t portcntrs_debugfs_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { u64 *counters; size_t avail; struct hfi1_pportdata *ppd; ssize_t rval; ppd = private2ppd(file); avail = hfi1_read_portcntrs(ppd, NULL, &counters); rval = simple_read_from_buffer(buf, count, ppos, counters, avail); return rval; } static void check_dyn_flag(u64 scratch0, char *p, int size, int *used, int this_hfi, int hfi, u32 flag, const char *what) { u32 mask; mask = flag << (hfi ? CR_DYN_SHIFT : 0); if (scratch0 & mask) { *used += scnprintf(p + *used, size - *used, " 0x%08x - HFI%d %s in use, %s device\n", mask, hfi, what, this_hfi == hfi ? "this" : "other"); } } static ssize_t asic_flags_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { struct hfi1_pportdata *ppd; struct hfi1_devdata *dd; u64 scratch0; char *tmp; int ret = 0; int size; int used; int i; ppd = private2ppd(file); dd = ppd->dd; size = PAGE_SIZE; used = 0; tmp = kmalloc(size, GFP_KERNEL); if (!tmp) return -ENOMEM; scratch0 = read_csr(dd, ASIC_CFG_SCRATCH); used += scnprintf(tmp + used, size - used, "Resource flags: 0x%016llx\n", scratch0); /* check permanent flag */ if (scratch0 & CR_THERM_INIT) { used += scnprintf(tmp + used, size - used, " 0x%08x - thermal monitoring initialized\n", (u32)CR_THERM_INIT); } /* check each dynamic flag on each HFI */ for (i = 0; i < 2; i++) { check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i, CR_SBUS, "SBus"); check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i, CR_EPROM, "EPROM"); check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i, CR_I2C1, "i2c chain 1"); check_dyn_flag(scratch0, tmp, size, &used, dd->hfi1_id, i, CR_I2C2, "i2c chain 2"); } used += scnprintf(tmp + used, size - used, "Write bits to clear\n"); ret = simple_read_from_buffer(buf, count, ppos, tmp, used); kfree(tmp); return ret; } static ssize_t asic_flags_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { struct hfi1_pportdata *ppd; struct hfi1_devdata *dd; char *buff; int ret; unsigned long long value; u64 scratch0; u64 clear; ppd = private2ppd(file); dd = ppd->dd; /* zero terminate and read the expected integer */ buff = memdup_user_nul(buf, count); if (IS_ERR(buff)) return PTR_ERR(buff); ret = kstrtoull(buff, 0, &value); if (ret) goto do_free; clear = value; /* obtain exclusive access */ mutex_lock(&dd->asic_data->asic_resource_mutex); acquire_hw_mutex(dd); scratch0 = read_csr(dd, ASIC_CFG_SCRATCH); scratch0 &= ~clear; write_csr(dd, ASIC_CFG_SCRATCH, scratch0); /* force write to be visible to other HFI on another OS */ (void)read_csr(dd, ASIC_CFG_SCRATCH); release_hw_mutex(dd); mutex_unlock(&dd->asic_data->asic_resource_mutex); /* return the number of bytes written */ ret = count; do_free: kfree(buff); return ret; } /* read the dc8051 memory */ static ssize_t dc8051_memory_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { struct hfi1_pportdata *ppd = private2ppd(file); ssize_t rval; void *tmp; loff_t start, end; /* the checks below expect the position to be positive */ if (*ppos < 0) return -EINVAL; tmp = kzalloc(DC8051_DATA_MEM_SIZE, GFP_KERNEL); if (!tmp) return -ENOMEM; /* * Fill in the requested portion of the temporary buffer from the * 8051 memory. The 8051 memory read is done in terms of 8 bytes. * Adjust start and end to fit. Skip reading anything if out of * range. */ start = *ppos & ~0x7; /* round down */ if (start < DC8051_DATA_MEM_SIZE) { end = (*ppos + count + 7) & ~0x7; /* round up */ if (end > DC8051_DATA_MEM_SIZE) end = DC8051_DATA_MEM_SIZE; rval = read_8051_data(ppd->dd, start, end - start, (u64 *)(tmp + start)); if (rval) goto done; } rval = simple_read_from_buffer(buf, count, ppos, tmp, DC8051_DATA_MEM_SIZE); done: kfree(tmp); return rval; } static ssize_t debugfs_lcb_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { struct hfi1_pportdata *ppd = private2ppd(file); struct hfi1_devdata *dd = ppd->dd; unsigned long total, csr_off; u64 data; if (*ppos < 0) return -EINVAL; /* only read 8 byte quantities */ if ((count % 8) != 0) return -EINVAL; /* offset must be 8-byte aligned */ if ((*ppos % 8) != 0) return -EINVAL; /* do nothing if out of range or zero count */ if (*ppos >= (LCB_END - LCB_START) || !count) return 0; /* reduce count if needed */ if (*ppos + count > LCB_END - LCB_START) count = (LCB_END - LCB_START) - *ppos; csr_off = LCB_START + *ppos; for (total = 0; total < count; total += 8, csr_off += 8) { if (read_lcb_csr(dd, csr_off, (u64 *)&data)) break; /* failed */ if (put_user(data, (unsigned long __user *)(buf + total))) break; } *ppos += total; return total; } static ssize_t debugfs_lcb_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { struct hfi1_pportdata *ppd = private2ppd(file); struct hfi1_devdata *dd = ppd->dd; unsigned long total, csr_off, data; if (*ppos < 0) return -EINVAL; /* only write 8 byte quantities */ if ((count % 8) != 0) return -EINVAL; /* offset must be 8-byte aligned */ if ((*ppos % 8) != 0) return -EINVAL; /* do nothing if out of range or zero count */ if (*ppos >= (LCB_END - LCB_START) || !count) return 0; /* reduce count if needed */ if (*ppos + count > LCB_END - LCB_START) count = (LCB_END - LCB_START) - *ppos; csr_off = LCB_START + *ppos; for (total = 0; total < count; total += 8, csr_off += 8) { if (get_user(data, (unsigned long __user *)(buf + total))) break; if (write_lcb_csr(dd, csr_off, data)) break; /* failed */ } *ppos += total; return total; } /* * read the per-port QSFP data for ppd */ static ssize_t qsfp_debugfs_dump(struct file *file, char __user *buf, size_t count, loff_t *ppos) { struct hfi1_pportdata *ppd; char *tmp; int ret; ppd = private2ppd(file); tmp = kmalloc(PAGE_SIZE, GFP_KERNEL); if (!tmp) return -ENOMEM; ret = qsfp_dump(ppd, tmp, PAGE_SIZE); if (ret > 0) ret = simple_read_from_buffer(buf, count, ppos, tmp, ret); kfree(tmp); return ret; } /* Do an i2c write operation on the chain for the given HFI. */ static ssize_t __i2c_debugfs_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos, u32 target) { struct hfi1_pportdata *ppd; char *buff; int ret; int i2c_addr; int offset; int total_written; ppd = private2ppd(file); /* byte offset format: [offsetSize][i2cAddr][offsetHigh][offsetLow] */ i2c_addr = (*ppos >> 16) & 0xffff; offset = *ppos & 0xffff; /* explicitly reject invalid address 0 to catch cp and cat */ if (i2c_addr == 0) return -EINVAL; buff = memdup_user(buf, count); if (IS_ERR(buff)) return PTR_ERR(buff); total_written = i2c_write(ppd, target, i2c_addr, offset, buff, count); if (total_written < 0) { ret = total_written; goto _free; } *ppos += total_written; ret = total_written; _free: kfree(buff); return ret; } /* Do an i2c write operation on chain for HFI 0. */ static ssize_t i2c1_debugfs_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { return __i2c_debugfs_write(file, buf, count, ppos, 0); } /* Do an i2c write operation on chain for HFI 1. */ static ssize_t i2c2_debugfs_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { return __i2c_debugfs_write(file, buf, count, ppos, 1); } /* Do an i2c read operation on the chain for the given HFI. */ static ssize_t __i2c_debugfs_read(struct file *file, char __user *buf, size_t count, loff_t *ppos, u32 target) { struct hfi1_pportdata *ppd; char *buff; int ret; int i2c_addr; int offset; int total_read; ppd = private2ppd(file); /* byte offset format: [offsetSize][i2cAddr][offsetHigh][offsetLow] */ i2c_addr = (*ppos >> 16) & 0xffff; offset = *ppos & 0xffff; /* explicitly reject invalid address 0 to catch cp and cat */ if (i2c_addr == 0) return -EINVAL; buff = kmalloc(count, GFP_KERNEL); if (!buff) return -ENOMEM; total_read = i2c_read(ppd, target, i2c_addr, offset, buff, count); if (total_read < 0) { ret = total_read; goto _free; } *ppos += total_read; ret = copy_to_user(buf, buff, total_read); if (ret > 0) { ret = -EFAULT; goto _free; } ret = total_read; _free: kfree(buff); return ret; } /* Do an i2c read operation on chain for HFI 0. */ static ssize_t i2c1_debugfs_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { return __i2c_debugfs_read(file, buf, count, ppos, 0); } /* Do an i2c read operation on chain for HFI 1. */ static ssize_t i2c2_debugfs_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { return __i2c_debugfs_read(file, buf, count, ppos, 1); } /* Do a QSFP write operation on the i2c chain for the given HFI. */ static ssize_t __qsfp_debugfs_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos, u32 target) { struct hfi1_pportdata *ppd; char *buff; int ret; int total_written; if (*ppos + count > QSFP_PAGESIZE * 4) /* base page + page00-page03 */ return -EINVAL; ppd = private2ppd(file); buff = memdup_user(buf, count); if (IS_ERR(buff)) return PTR_ERR(buff); total_written = qsfp_write(ppd, target, *ppos, buff, count); if (total_written < 0) { ret = total_written; goto _free; } *ppos += total_written; ret = total_written; _free: kfree(buff); return ret; } /* Do a QSFP write operation on i2c chain for HFI 0. */ static ssize_t qsfp1_debugfs_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { return __qsfp_debugfs_write(file, buf, count, ppos, 0); } /* Do a QSFP write operation on i2c chain for HFI 1. */ static ssize_t qsfp2_debugfs_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { return __qsfp_debugfs_write(file, buf, count, ppos, 1); } /* Do a QSFP read operation on the i2c chain for the given HFI. */ static ssize_t __qsfp_debugfs_read(struct file *file, char __user *buf, size_t count, loff_t *ppos, u32 target) { struct hfi1_pportdata *ppd; char *buff; int ret; int total_read; if (*ppos + count > QSFP_PAGESIZE * 4) { /* base page + page00-page03 */ ret = -EINVAL; goto _return; } ppd = private2ppd(file); buff = kmalloc(count, GFP_KERNEL); if (!buff) { ret = -ENOMEM; goto _return; } total_read = qsfp_read(ppd, target, *ppos, buff, count); if (total_read < 0) { ret = total_read; goto _free; } *ppos += total_read; ret = copy_to_user(buf, buff, total_read); if (ret > 0) { ret = -EFAULT; goto _free; } ret = total_read; _free: kfree(buff); _return: return ret; } /* Do a QSFP read operation on i2c chain for HFI 0. */ static ssize_t qsfp1_debugfs_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { return __qsfp_debugfs_read(file, buf, count, ppos, 0); } /* Do a QSFP read operation on i2c chain for HFI 1. */ static ssize_t qsfp2_debugfs_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { return __qsfp_debugfs_read(file, buf, count, ppos, 1); } static int __i2c_debugfs_open(struct inode *in, struct file *fp, u32 target) { struct hfi1_pportdata *ppd; ppd = private2ppd(fp); return acquire_chip_resource(ppd->dd, i2c_target(target), 0); } static int i2c1_debugfs_open(struct inode *in, struct file *fp) { return __i2c_debugfs_open(in, fp, 0); } static int i2c2_debugfs_open(struct inode *in, struct file *fp) { return __i2c_debugfs_open(in, fp, 1); } static int __i2c_debugfs_release(struct inode *in, struct file *fp, u32 target) { struct hfi1_pportdata *ppd; ppd = private2ppd(fp); release_chip_resource(ppd->dd, i2c_target(target)); return 0; } static int i2c1_debugfs_release(struct inode *in, struct file *fp) { return __i2c_debugfs_release(in, fp, 0); } static int i2c2_debugfs_release(struct inode *in, struct file *fp) { return __i2c_debugfs_release(in, fp, 1); } static int __qsfp_debugfs_open(struct inode *in, struct file *fp, u32 target) { struct hfi1_pportdata *ppd; ppd = private2ppd(fp); return acquire_chip_resource(ppd->dd, i2c_target(target), 0); } static int qsfp1_debugfs_open(struct inode *in, struct file *fp) { return __qsfp_debugfs_open(in, fp, 0); } static int qsfp2_debugfs_open(struct inode *in, struct file *fp) { return __qsfp_debugfs_open(in, fp, 1); } static int __qsfp_debugfs_release(struct inode *in, struct file *fp, u32 target) { struct hfi1_pportdata *ppd; ppd = private2ppd(fp); release_chip_resource(ppd->dd, i2c_target(target)); return 0; } static int qsfp1_debugfs_release(struct inode *in, struct file *fp) { return __qsfp_debugfs_release(in, fp, 0); } static int qsfp2_debugfs_release(struct inode *in, struct file *fp) { return __qsfp_debugfs_release(in, fp, 1); } #define EXPROM_WRITE_ENABLE BIT_ULL(14) static bool exprom_wp_disabled; static int exprom_wp_set(struct hfi1_devdata *dd, bool disable) { u64 gpio_val = 0; if (disable) { gpio_val = EXPROM_WRITE_ENABLE; exprom_wp_disabled = true; dd_dev_info(dd, "Disable Expansion ROM Write Protection\n"); } else { exprom_wp_disabled = false; dd_dev_info(dd, "Enable Expansion ROM Write Protection\n"); } write_csr(dd, ASIC_GPIO_OUT, gpio_val); write_csr(dd, ASIC_GPIO_OE, gpio_val); return 0; } static ssize_t exprom_wp_debugfs_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { return 0; } static ssize_t exprom_wp_debugfs_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { struct hfi1_pportdata *ppd = private2ppd(file); char cdata; if (count != 1) return -EINVAL; if (get_user(cdata, buf)) return -EFAULT; if (cdata == '0') exprom_wp_set(ppd->dd, false); else if (cdata == '1') exprom_wp_set(ppd->dd, true); else return -EINVAL; return 1; } static unsigned long exprom_in_use; static int exprom_wp_debugfs_open(struct inode *in, struct file *fp) { if (test_and_set_bit(0, &exprom_in_use)) return -EBUSY; return 0; } static int exprom_wp_debugfs_release(struct inode *in, struct file *fp) { struct hfi1_pportdata *ppd = private2ppd(fp); if (exprom_wp_disabled) exprom_wp_set(ppd->dd, false); clear_bit(0, &exprom_in_use); return 0; } #define DEBUGFS_OPS(nm, readroutine, writeroutine) \ { \ .name = nm, \ .ops = { \ .owner = THIS_MODULE, \ .read = readroutine, \ .write = writeroutine, \ .llseek = generic_file_llseek, \ }, \ } #define DEBUGFS_XOPS(nm, readf, writef, openf, releasef) \ { \ .name = nm, \ .ops = { \ .owner = THIS_MODULE, \ .read = readf, \ .write = writef, \ .llseek = generic_file_llseek, \ .open = openf, \ .release = releasef \ }, \ } static const struct counter_info cntr_ops[] = { DEBUGFS_OPS("counter_names", dev_names_read, NULL), DEBUGFS_OPS("counters", dev_counters_read, NULL), DEBUGFS_OPS("portcounter_names", portnames_read, NULL), }; static const struct counter_info port_cntr_ops[] = { DEBUGFS_OPS("port%dcounters", portcntrs_debugfs_read, NULL), DEBUGFS_XOPS("i2c1", i2c1_debugfs_read, i2c1_debugfs_write, i2c1_debugfs_open, i2c1_debugfs_release), DEBUGFS_XOPS("i2c2", i2c2_debugfs_read, i2c2_debugfs_write, i2c2_debugfs_open, i2c2_debugfs_release), DEBUGFS_OPS("qsfp_dump%d", qsfp_debugfs_dump, NULL), DEBUGFS_XOPS("qsfp1", qsfp1_debugfs_read, qsfp1_debugfs_write, qsfp1_debugfs_open, qsfp1_debugfs_release), DEBUGFS_XOPS("qsfp2", qsfp2_debugfs_read, qsfp2_debugfs_write, qsfp2_debugfs_open, qsfp2_debugfs_release), DEBUGFS_XOPS("exprom_wp", exprom_wp_debugfs_read, exprom_wp_debugfs_write, exprom_wp_debugfs_open, exprom_wp_debugfs_release), DEBUGFS_OPS("asic_flags", asic_flags_read, asic_flags_write), DEBUGFS_OPS("dc8051_memory", dc8051_memory_read, NULL), DEBUGFS_OPS("lcb", debugfs_lcb_read, debugfs_lcb_write), }; static void *_sdma_cpu_list_seq_start(struct seq_file *s, loff_t *pos) { if (*pos >= num_online_cpus()) return NULL; return pos; } static void *_sdma_cpu_list_seq_next(struct seq_file *s, void *v, loff_t *pos) { ++*pos; if (*pos >= num_online_cpus()) return NULL; return pos; } static void _sdma_cpu_list_seq_stop(struct seq_file *s, void *v) { /* nothing allocated */ } static int _sdma_cpu_list_seq_show(struct seq_file *s, void *v) { struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; struct hfi1_devdata *dd = dd_from_dev(ibd); loff_t *spos = v; loff_t i = *spos; sdma_seqfile_dump_cpu_list(s, dd, (unsigned long)i); return 0; } DEBUGFS_SEQ_FILE_OPS(sdma_cpu_list); DEBUGFS_SEQ_FILE_OPEN(sdma_cpu_list) DEBUGFS_FILE_OPS(sdma_cpu_list); void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd) { char name[sizeof("port0counters") + 1]; char link[10]; struct hfi1_devdata *dd = dd_from_dev(ibd); struct hfi1_pportdata *ppd; struct dentry *root; int unit = dd->unit; int i, j; if (!hfi1_dbg_root) return; snprintf(name, sizeof(name), "%s_%d", class_name(), unit); snprintf(link, sizeof(link), "%d", unit); root = debugfs_create_dir(name, hfi1_dbg_root); ibd->hfi1_ibdev_dbg = root; ibd->hfi1_ibdev_link = debugfs_create_symlink(link, hfi1_dbg_root, name); debugfs_create_file("opcode_stats", 0444, root, ibd, &_opcode_stats_file_ops); debugfs_create_file("tx_opcode_stats", 0444, root, ibd, &_tx_opcode_stats_file_ops); debugfs_create_file("ctx_stats", 0444, root, ibd, &_ctx_stats_file_ops); debugfs_create_file("qp_stats", 0444, root, ibd, &_qp_stats_file_ops); debugfs_create_file("sdes", 0444, root, ibd, &_sdes_file_ops); debugfs_create_file("rcds", 0444, root, ibd, &_rcds_file_ops); debugfs_create_file("pios", 0444, root, ibd, &_pios_file_ops); debugfs_create_file("sdma_cpu_list", 0444, root, ibd, &_sdma_cpu_list_file_ops); /* dev counter files */ for (i = 0; i < ARRAY_SIZE(cntr_ops); i++) debugfs_create_file(cntr_ops[i].name, 0444, root, dd, &cntr_ops[i].ops); /* per port files */ for (ppd = dd->pport, j = 0; j < dd->num_pports; j++, ppd++) for (i = 0; i < ARRAY_SIZE(port_cntr_ops); i++) { snprintf(name, sizeof(name), port_cntr_ops[i].name, j + 1); debugfs_create_file(name, !port_cntr_ops[i].ops.write ? S_IRUGO : S_IRUGO | S_IWUSR, root, ppd, &port_cntr_ops[i].ops); } hfi1_fault_init_debugfs(ibd); } void hfi1_dbg_ibdev_exit(struct hfi1_ibdev *ibd) { if (!hfi1_dbg_root) goto out; hfi1_fault_exit_debugfs(ibd); debugfs_remove(ibd->hfi1_ibdev_link); debugfs_remove_recursive(ibd->hfi1_ibdev_dbg); out: ibd->hfi1_ibdev_dbg = NULL; } /* * driver stats field names, one line per stat, single string. Used by * programs like hfistats to print the stats in a way which works for * different versions of drivers, without changing program source. * if hfi1_ib_stats changes, this needs to change. Names need to be * 12 chars or less (w/o newline), for proper display by hfistats utility. */ static const char * const hfi1_statnames[] = { /* must be element 0*/ "KernIntr", "ErrorIntr", "Tx_Errs", "Rcv_Errs", "H/W_Errs", "NoPIOBufs", "CtxtsOpen", "RcvLen_Errs", "EgrBufFull", "EgrHdrFull" }; static void *_driver_stats_names_seq_start(struct seq_file *s, loff_t *pos) { if (*pos >= ARRAY_SIZE(hfi1_statnames)) return NULL; return pos; } static void *_driver_stats_names_seq_next( struct seq_file *s, void *v, loff_t *pos) { ++*pos; if (*pos >= ARRAY_SIZE(hfi1_statnames)) return NULL; return pos; } static void _driver_stats_names_seq_stop(struct seq_file *s, void *v) { } static int _driver_stats_names_seq_show(struct seq_file *s, void *v) { loff_t *spos = v; seq_printf(s, "%s\n", hfi1_statnames[*spos]); return 0; } DEBUGFS_SEQ_FILE_OPS(driver_stats_names); DEBUGFS_SEQ_FILE_OPEN(driver_stats_names) DEBUGFS_FILE_OPS(driver_stats_names); static void *_driver_stats_seq_start(struct seq_file *s, loff_t *pos) { if (*pos >= ARRAY_SIZE(hfi1_statnames)) return NULL; return pos; } static void *_driver_stats_seq_next(struct seq_file *s, void *v, loff_t *pos) { ++*pos; if (*pos >= ARRAY_SIZE(hfi1_statnames)) return NULL; return pos; } static void _driver_stats_seq_stop(struct seq_file *s, void *v) { } static void hfi1_sps_show_ints(struct seq_file *s) { unsigned long index, flags; struct hfi1_devdata *dd; u64 sps_ints = 0; xa_lock_irqsave(&hfi1_dev_table, flags); xa_for_each(&hfi1_dev_table, index, dd) { sps_ints += get_all_cpu_total(dd->int_counter); } xa_unlock_irqrestore(&hfi1_dev_table, flags); seq_write(s, &sps_ints, sizeof(u64)); } static int _driver_stats_seq_show(struct seq_file *s, void *v) { loff_t *spos = v; u64 *stats = (u64 *)&hfi1_stats; /* special case for interrupts */ if (*spos == 0) hfi1_sps_show_ints(s); else seq_write(s, stats + *spos, sizeof(u64)); return 0; } DEBUGFS_SEQ_FILE_OPS(driver_stats); DEBUGFS_SEQ_FILE_OPEN(driver_stats) DEBUGFS_FILE_OPS(driver_stats); void hfi1_dbg_init(void) { hfi1_dbg_root = debugfs_create_dir(DRIVER_NAME, NULL); debugfs_create_file("driver_stats_names", 0444, hfi1_dbg_root, NULL, &_driver_stats_names_file_ops); debugfs_create_file("driver_stats", 0444, hfi1_dbg_root, NULL, &_driver_stats_file_ops); } void hfi1_dbg_exit(void) { debugfs_remove_recursive(hfi1_dbg_root); hfi1_dbg_root = NULL; }
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