diff --git a/drivers/net/ethernet/marvell/octeontx2/af/Makefile b/drivers/net/ethernet/marvell/octeontx2/af/Makefile index 06329acf9c2c9..1b25948c662b7 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/Makefile +++ b/drivers/net/ethernet/marvell/octeontx2/af/Makefile @@ -8,4 +8,4 @@ obj-$(CONFIG_OCTEONTX2_AF) += octeontx2_af.o octeontx2_mbox-y := mbox.o octeontx2_af-y := cgx.o rvu.o rvu_cgx.o rvu_npa.o rvu_nix.o \ - rvu_reg.o rvu_npc.o + rvu_reg.o rvu_npc.o rvu_debugfs.o diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c index e581091c09c4e..8ed54989dd68e 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c @@ -2456,6 +2456,9 @@ static int rvu_probe(struct pci_dev *pdev, const struct pci_device_id *id) if (err) goto err_irq; + /* Initialize debugfs */ + rvu_dbg_init(rvu); + return 0; err_irq: rvu_unregister_interrupts(rvu); @@ -2482,6 +2485,7 @@ static void rvu_remove(struct pci_dev *pdev) { struct rvu *rvu = pci_get_drvdata(pdev); + rvu_dbg_exit(rvu); rvu_unregister_interrupts(rvu); rvu_flr_wq_destroy(rvu); rvu_cgx_exit(rvu); diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h index c9d60b0554c0f..9e8ef1f36700f 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h @@ -35,6 +35,12 @@ #define RVU_PFVF_FUNC_SHIFT 0 #define RVU_PFVF_FUNC_MASK 0x3FF +#ifdef CONFIG_DEBUG_FS +struct rvu_debugfs { + struct dentry *root; +}; +#endif + struct rvu_work { struct work_struct work; struct rvu *rvu; @@ -263,6 +269,10 @@ struct rvu { struct list_head cgx_evq_head; /* cgx event queue head */ char mkex_pfl_name[MKEX_NAME_LEN]; /* Configured MKEX profile name */ + +#ifdef CONFIG_DEBUG_FS + struct rvu_debugfs rvu_dbg; +#endif }; static inline void rvu_write64(struct rvu *rvu, u64 block, u64 offset, u64 val) @@ -501,4 +511,12 @@ int rvu_mbox_handler_npc_mcam_alloc_and_write_entry(struct rvu *rvu, struct npc_mcam_alloc_and_write_entry_rsp *rsp); int rvu_mbox_handler_npc_get_kex_cfg(struct rvu *rvu, struct msg_req *req, struct npc_get_kex_cfg_rsp *rsp); + +#ifdef CONFIG_DEBUG_FS +void rvu_dbg_init(struct rvu *rvu); +void rvu_dbg_exit(struct rvu *rvu); +#else +static inline void rvu_dbg_init(struct rvu *rvu) {} +static inline void rvu_dbg_exit(struct rvu *rvu) {} +#endif #endif /* RVU_H */ diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c new file mode 100644 index 0000000000000..ede6cdb7cf236 --- /dev/null +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c @@ -0,0 +1,146 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Marvell OcteonTx2 RVU Admin Function driver + * + * Copyright (C) 2019 Marvell International Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifdef CONFIG_DEBUG_FS + +#include +#include +#include +#include + +#include "rvu_struct.h" +#include "rvu_reg.h" +#include "rvu.h" + +#define DEBUGFS_DIR_NAME "octeontx2" + +#define rvu_dbg_NULL NULL + +#define RVU_DEBUG_FOPS(name, read_op, write_op) \ +static const struct file_operations rvu_dbg_##name##_fops = { \ + .owner = THIS_MODULE, \ + .open = simple_open, \ + .read = rvu_dbg_##read_op, \ + .write = rvu_dbg_##write_op \ +} + +/* Dumps current provisioning status of all RVU block LFs */ +static ssize_t rvu_dbg_rsrc_attach_status(struct file *filp, + char __user *buffer, + size_t count, loff_t *ppos) +{ + int index, off = 0, flag = 0, go_back = 0, off_prev; + struct rvu *rvu = filp->private_data; + int lf, pf, vf, pcifunc; + struct rvu_block block; + int bytes_not_copied; + int buf_size = 2048; + char *buf; + + /* don't allow partial reads */ + if (*ppos != 0) + return 0; + + buf = kzalloc(buf_size, GFP_KERNEL); + if (!buf) + return -ENOSPC; + off += scnprintf(&buf[off], buf_size - 1 - off, "\npcifunc\t\t"); + for (index = 0; index < BLK_COUNT; index++) + if (strlen(rvu->hw->block[index].name)) + off += scnprintf(&buf[off], buf_size - 1 - off, + "%*s\t", (index - 1) * 2, + rvu->hw->block[index].name); + off += scnprintf(&buf[off], buf_size - 1 - off, "\n"); + for (pf = 0; pf < rvu->hw->total_pfs; pf++) { + for (vf = 0; vf <= rvu->hw->total_vfs; vf++) { + pcifunc = pf << 10 | vf; + if (!pcifunc) + continue; + + if (vf) { + go_back = scnprintf(&buf[off], + buf_size - 1 - off, + "PF%d:VF%d\t\t", pf, + vf - 1); + } else { + go_back = scnprintf(&buf[off], + buf_size - 1 - off, + "PF%d\t\t", pf); + } + + off += go_back; + for (index = 0; index < BLKTYPE_MAX; index++) { + block = rvu->hw->block[index]; + if (!strlen(block.name)) + continue; + off_prev = off; + for (lf = 0; lf < block.lf.max; lf++) { + if (block.fn_map[lf] != pcifunc) + continue; + flag = 1; + off += scnprintf(&buf[off], buf_size - 1 + - off, "%3d,", lf); + } + if (flag && off_prev != off) + off--; + else + go_back++; + off += scnprintf(&buf[off], buf_size - 1 - off, + "\t"); + } + if (!flag) + off -= go_back; + else + flag = 0; + off--; + off += scnprintf(&buf[off], buf_size - 1 - off, "\n"); + } + } + + bytes_not_copied = copy_to_user(buffer, buf, off); + kfree(buf); + + if (bytes_not_copied) + return -EFAULT; + + *ppos = off; + return off; +} + +RVU_DEBUG_FOPS(rsrc_status, rsrc_attach_status, NULL); + +void rvu_dbg_init(struct rvu *rvu) +{ + struct device *dev = &rvu->pdev->dev; + struct dentry *pfile; + + rvu->rvu_dbg.root = debugfs_create_dir(DEBUGFS_DIR_NAME, NULL); + if (!rvu->rvu_dbg.root) { + dev_err(rvu->dev, "%s failed\n", __func__); + return; + } + pfile = debugfs_create_file("rsrc_alloc", 0444, rvu->rvu_dbg.root, rvu, + &rvu_dbg_rsrc_status_fops); + if (!pfile) + goto create_failed; + + return; + +create_failed: + dev_err(dev, "Failed to create debugfs dir\n"); + debugfs_remove_recursive(rvu->rvu_dbg.root); +} + +void rvu_dbg_exit(struct rvu *rvu) +{ + debugfs_remove_recursive(rvu->rvu_dbg.root); +} + +#endif /* CONFIG_DEBUG_FS */