diff options
Diffstat (limited to 'drivers/infiniband/hw/bnxt_re/debugfs.c')
| -rw-r--r-- | drivers/infiniband/hw/bnxt_re/debugfs.c | 359 |
1 files changed, 359 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/bnxt_re/debugfs.c b/drivers/infiniband/hw/bnxt_re/debugfs.c new file mode 100644 index 000000000000..e632f1661b92 --- /dev/null +++ b/drivers/infiniband/hw/bnxt_re/debugfs.c @@ -0,0 +1,359 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause +/* + * Copyright (c) 2024, Broadcom. All rights reserved. The term + * Broadcom refers to Broadcom Limited and/or its subsidiaries. + * + * Description: Debugfs component of the bnxt_re driver + */ + +#include <linux/debugfs.h> +#include <linux/pci.h> +#include <rdma/ib_addr.h> + +#include "bnxt_ulp.h" +#include "roce_hsi.h" +#include "qplib_res.h" +#include "qplib_sp.h" +#include "qplib_fp.h" +#include "qplib_rcfw.h" +#include "bnxt_re.h" +#include "ib_verbs.h" +#include "debugfs.h" + +static struct dentry *bnxt_re_debugfs_root; + +static const char * const bnxt_re_cc_gen0_name[] = { + "enable_cc", + "run_avg_weight_g", + "num_phase_per_state", + "init_cr", + "init_tr", + "tos_ecn", + "tos_dscp", + "alt_vlan_pcp", + "alt_vlan_dscp", + "rtt", + "cc_mode", + "tcp_cp", + "tx_queue", + "inactivity_cp", +}; + +static inline const char *bnxt_re_qp_state_str(u8 state) +{ + switch (state) { + case CMDQ_MODIFY_QP_NEW_STATE_RESET: + return "RST"; + case CMDQ_MODIFY_QP_NEW_STATE_INIT: + return "INIT"; + case CMDQ_MODIFY_QP_NEW_STATE_RTR: + return "RTR"; + case CMDQ_MODIFY_QP_NEW_STATE_RTS: + return "RTS"; + case CMDQ_MODIFY_QP_NEW_STATE_SQE: + return "SQER"; + case CMDQ_MODIFY_QP_NEW_STATE_SQD: + return "SQD"; + case CMDQ_MODIFY_QP_NEW_STATE_ERR: + return "ERR"; + default: + return "Invalid QP state"; + } +} + +static inline const char *bnxt_re_qp_type_str(u8 type) +{ + switch (type) { + case CMDQ_CREATE_QP1_TYPE_GSI: return "QP1"; + case CMDQ_CREATE_QP_TYPE_GSI: return "QP1"; + case CMDQ_CREATE_QP_TYPE_RC: return "RC"; + case CMDQ_CREATE_QP_TYPE_UD: return "UD"; + case CMDQ_CREATE_QP_TYPE_RAW_ETHERTYPE: return "RAW_ETHERTYPE"; + default: return "Invalid transport type"; + } +} + +static ssize_t qp_info_read(struct file *filep, + char __user *buffer, + size_t count, loff_t *ppos) +{ + struct bnxt_re_qp *qp = filep->private_data; + char *buf; + int len; + + if (*ppos) + return 0; + + buf = kasprintf(GFP_KERNEL, + "QPN\t\t: %d\n" + "transport\t: %s\n" + "state\t\t: %s\n" + "mtu\t\t: %d\n" + "timeout\t\t: %d\n" + "remote QPN\t: %d\n", + qp->qplib_qp.id, + bnxt_re_qp_type_str(qp->qplib_qp.type), + bnxt_re_qp_state_str(qp->qplib_qp.state), + qp->qplib_qp.mtu, + qp->qplib_qp.timeout, + qp->qplib_qp.dest_qpn); + if (!buf) + return -ENOMEM; + if (count < strlen(buf)) { + kfree(buf); + return -ENOSPC; + } + len = simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf)); + kfree(buf); + return len; +} + +static const struct file_operations debugfs_qp_fops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = qp_info_read, +}; + +void bnxt_re_debug_add_qpinfo(struct bnxt_re_dev *rdev, struct bnxt_re_qp *qp) +{ + char resn[32]; + + sprintf(resn, "0x%x", qp->qplib_qp.id); + qp->dentry = debugfs_create_file(resn, 0400, rdev->qp_debugfs, qp, &debugfs_qp_fops); +} + +void bnxt_re_debug_rem_qpinfo(struct bnxt_re_dev *rdev, struct bnxt_re_qp *qp) +{ + debugfs_remove(qp->dentry); +} + +static int map_cc_config_offset_gen0_ext0(u32 offset, struct bnxt_qplib_cc_param *ccparam, u32 *val) +{ + u64 map_offset; + + map_offset = BIT(offset); + + switch (map_offset) { + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_ENABLE_CC: + *val = ccparam->enable; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_G: + *val = ccparam->g; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_NUMPHASEPERSTATE: + *val = ccparam->nph_per_state; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_INIT_CR: + *val = ccparam->init_cr; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_INIT_TR: + *val = ccparam->init_tr; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_TOS_ECN: + *val = ccparam->tos_ecn; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_TOS_DSCP: + *val = ccparam->tos_dscp; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_ALT_VLAN_PCP: + *val = ccparam->alt_vlan_pcp; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_ALT_TOS_DSCP: + *val = ccparam->alt_tos_dscp; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_RTT: + *val = ccparam->rtt; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_CC_MODE: + *val = ccparam->cc_mode; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_TCP_CP: + *val = ccparam->tcp_cp; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_INACTIVITY_CP: + *val = ccparam->inact_th; + break; + default: + return -EINVAL; + } + + return 0; +} + +static ssize_t bnxt_re_cc_config_get(struct file *filp, char __user *buffer, + size_t usr_buf_len, loff_t *ppos) +{ + struct bnxt_re_cc_param *dbg_cc_param = filp->private_data; + struct bnxt_re_dev *rdev = dbg_cc_param->rdev; + struct bnxt_qplib_cc_param ccparam = {}; + u32 offset = dbg_cc_param->offset; + char buf[16]; + u32 val; + int rc; + + rc = bnxt_qplib_query_cc_param(&rdev->qplib_res, &ccparam); + if (rc) + return rc; + + rc = map_cc_config_offset_gen0_ext0(offset, &ccparam, &val); + if (rc) + return rc; + + rc = snprintf(buf, sizeof(buf), "%d\n", val); + if (rc < 0) + return rc; + + return simple_read_from_buffer(buffer, usr_buf_len, ppos, (u8 *)(buf), rc); +} + +static int bnxt_re_fill_gen0_ext0(struct bnxt_qplib_cc_param *ccparam, u32 offset, u32 val) +{ + u32 modify_mask; + + modify_mask = BIT(offset); + + switch (modify_mask) { + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_ENABLE_CC: + ccparam->enable = val; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_G: + ccparam->g = val; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_NUMPHASEPERSTATE: + ccparam->nph_per_state = val; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_INIT_CR: + ccparam->init_cr = val; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_INIT_TR: + ccparam->init_tr = val; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_TOS_ECN: + ccparam->tos_ecn = val; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_TOS_DSCP: + ccparam->tos_dscp = val; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_ALT_VLAN_PCP: + ccparam->alt_vlan_pcp = val; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_ALT_TOS_DSCP: + ccparam->alt_tos_dscp = val; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_RTT: + ccparam->rtt = val; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_CC_MODE: + ccparam->cc_mode = val; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_TCP_CP: + ccparam->tcp_cp = val; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_TX_QUEUE: + return -EOPNOTSUPP; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_INACTIVITY_CP: + ccparam->inact_th = val; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_TIME_PER_PHASE: + ccparam->time_pph = val; + break; + case CMDQ_MODIFY_ROCE_CC_MODIFY_MASK_PKTS_PER_PHASE: + ccparam->pkts_pph = val; + break; + } + + ccparam->mask = modify_mask; + return 0; +} + +static int bnxt_re_configure_cc(struct bnxt_re_dev *rdev, u32 gen_ext, u32 offset, u32 val) +{ + struct bnxt_qplib_cc_param ccparam = { }; + int rc; + + if (gen_ext != CC_CONFIG_GEN0_EXT0) + return -EOPNOTSUPP; + + rc = bnxt_re_fill_gen0_ext0(&ccparam, offset, val); + if (rc) + return rc; + + bnxt_qplib_modify_cc(&rdev->qplib_res, &ccparam); + return 0; +} + +static ssize_t bnxt_re_cc_config_set(struct file *filp, const char __user *buffer, + size_t count, loff_t *ppos) +{ + struct bnxt_re_cc_param *dbg_cc_param = filp->private_data; + struct bnxt_re_dev *rdev = dbg_cc_param->rdev; + u32 offset = dbg_cc_param->offset; + u8 cc_gen = dbg_cc_param->cc_gen; + char buf[16]; + u32 val; + int rc; + + if (count >= sizeof(buf)) + return -EINVAL; + + if (copy_from_user(buf, buffer, count)) + return -EFAULT; + + buf[count] = '\0'; + if (kstrtou32(buf, 0, &val)) + return -EINVAL; + + rc = bnxt_re_configure_cc(rdev, cc_gen, offset, val); + return rc ? rc : count; +} + +static const struct file_operations bnxt_re_cc_config_ops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = bnxt_re_cc_config_get, + .write = bnxt_re_cc_config_set, +}; + +void bnxt_re_debugfs_add_pdev(struct bnxt_re_dev *rdev) +{ + struct pci_dev *pdev = rdev->en_dev->pdev; + struct bnxt_re_dbg_cc_config_params *cc_params; + int i; + + rdev->dbg_root = debugfs_create_dir(dev_name(&pdev->dev), bnxt_re_debugfs_root); + + rdev->qp_debugfs = debugfs_create_dir("QPs", rdev->dbg_root); + rdev->cc_config = debugfs_create_dir("cc_config", rdev->dbg_root); + + rdev->cc_config_params = kzalloc(sizeof(*cc_params), GFP_KERNEL); + + for (i = 0; i < BNXT_RE_CC_PARAM_GEN0; i++) { + struct bnxt_re_cc_param *tmp_params = &rdev->cc_config_params->gen0_parms[i]; + + tmp_params->rdev = rdev; + tmp_params->offset = i; + tmp_params->cc_gen = CC_CONFIG_GEN0_EXT0; + tmp_params->dentry = debugfs_create_file(bnxt_re_cc_gen0_name[i], 0400, + rdev->cc_config, tmp_params, + &bnxt_re_cc_config_ops); + } +} + +void bnxt_re_debugfs_rem_pdev(struct bnxt_re_dev *rdev) +{ + debugfs_remove_recursive(rdev->qp_debugfs); + debugfs_remove_recursive(rdev->cc_config); + kfree(rdev->cc_config_params); + debugfs_remove_recursive(rdev->dbg_root); + rdev->dbg_root = NULL; +} + +void bnxt_re_register_debugfs(void) +{ + bnxt_re_debugfs_root = debugfs_create_dir("bnxt_re", NULL); +} + +void bnxt_re_unregister_debugfs(void) +{ + debugfs_remove(bnxt_re_debugfs_root); +} |