2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
148 lines
4.4 KiB
C
148 lines
4.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright 2014 IBM Corp.
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*/
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#include <linux/debugfs.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include "cxl.h"
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static struct dentry *cxl_debugfs;
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/* Helpers to export CXL mmaped IO registers via debugfs */
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static int debugfs_io_u64_get(void *data, u64 *val)
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{
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*val = in_be64((u64 __iomem *)data);
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return 0;
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}
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static int debugfs_io_u64_set(void *data, u64 val)
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{
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out_be64((u64 __iomem *)data, val);
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return 0;
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}
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DEFINE_DEBUGFS_ATTRIBUTE(fops_io_x64, debugfs_io_u64_get, debugfs_io_u64_set,
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"0x%016llx\n");
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static struct dentry *debugfs_create_io_x64(const char *name, umode_t mode,
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struct dentry *parent, u64 __iomem *value)
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{
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return debugfs_create_file_unsafe(name, mode, parent,
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(void __force *)value, &fops_io_x64);
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}
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void cxl_debugfs_add_adapter_regs_psl9(struct cxl *adapter, struct dentry *dir)
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{
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debugfs_create_io_x64("fir1", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_FIR1));
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debugfs_create_io_x64("fir_mask", 0400, dir,
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_cxl_p1_addr(adapter, CXL_PSL9_FIR_MASK));
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debugfs_create_io_x64("fir_cntl", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_FIR_CNTL));
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debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_TRACECFG));
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debugfs_create_io_x64("debug", 0600, dir,
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_cxl_p1_addr(adapter, CXL_PSL9_DEBUG));
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debugfs_create_io_x64("xsl-debug", 0600, dir,
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_cxl_p1_addr(adapter, CXL_XSL9_DBG));
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}
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void cxl_debugfs_add_adapter_regs_psl8(struct cxl *adapter, struct dentry *dir)
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{
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debugfs_create_io_x64("fir1", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR1));
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debugfs_create_io_x64("fir2", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR2));
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debugfs_create_io_x64("fir_cntl", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR_CNTL));
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debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_TRACE));
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}
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int cxl_debugfs_adapter_add(struct cxl *adapter)
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{
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struct dentry *dir;
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char buf[32];
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if (!cxl_debugfs)
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return -ENODEV;
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snprintf(buf, 32, "card%i", adapter->adapter_num);
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dir = debugfs_create_dir(buf, cxl_debugfs);
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if (IS_ERR(dir))
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return PTR_ERR(dir);
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adapter->debugfs = dir;
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debugfs_create_io_x64("err_ivte", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_ErrIVTE));
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if (adapter->native->sl_ops->debugfs_add_adapter_regs)
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adapter->native->sl_ops->debugfs_add_adapter_regs(adapter, dir);
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return 0;
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}
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void cxl_debugfs_adapter_remove(struct cxl *adapter)
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{
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debugfs_remove_recursive(adapter->debugfs);
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}
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void cxl_debugfs_add_afu_regs_psl9(struct cxl_afu *afu, struct dentry *dir)
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{
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debugfs_create_io_x64("serr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SERR_An));
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}
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void cxl_debugfs_add_afu_regs_psl8(struct cxl_afu *afu, struct dentry *dir)
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{
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debugfs_create_io_x64("sstp0", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_SSTP0_An));
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debugfs_create_io_x64("sstp1", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_SSTP1_An));
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debugfs_create_io_x64("fir", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_FIR_SLICE_An));
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debugfs_create_io_x64("serr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SERR_An));
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debugfs_create_io_x64("afu_debug", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_AFU_DEBUG_An));
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debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SLICE_TRACE));
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}
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int cxl_debugfs_afu_add(struct cxl_afu *afu)
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{
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struct dentry *dir;
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char buf[32];
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if (!afu->adapter->debugfs)
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return -ENODEV;
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snprintf(buf, 32, "psl%i.%i", afu->adapter->adapter_num, afu->slice);
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dir = debugfs_create_dir(buf, afu->adapter->debugfs);
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if (IS_ERR(dir))
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return PTR_ERR(dir);
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afu->debugfs = dir;
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debugfs_create_io_x64("sr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SR_An));
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debugfs_create_io_x64("dsisr", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_DSISR_An));
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debugfs_create_io_x64("dar", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_DAR_An));
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debugfs_create_io_x64("err_status", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_ErrStat_An));
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if (afu->adapter->native->sl_ops->debugfs_add_afu_regs)
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afu->adapter->native->sl_ops->debugfs_add_afu_regs(afu, dir);
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return 0;
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}
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void cxl_debugfs_afu_remove(struct cxl_afu *afu)
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{
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debugfs_remove_recursive(afu->debugfs);
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}
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int __init cxl_debugfs_init(void)
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{
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struct dentry *ent;
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if (!cpu_has_feature(CPU_FTR_HVMODE))
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return 0;
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ent = debugfs_create_dir("cxl", NULL);
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if (IS_ERR(ent))
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return PTR_ERR(ent);
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cxl_debugfs = ent;
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return 0;
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}
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void cxl_debugfs_exit(void)
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{
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debugfs_remove_recursive(cxl_debugfs);
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}
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