2 * Copyright 2014 IBM Corp.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
10 #include <linux/debugfs.h>
11 #include <linux/kernel.h>
12 #include <linux/slab.h>
16 static struct dentry *cxl_debugfs;
18 /* Helpers to export CXL mmaped IO registers via debugfs */
19 static int debugfs_io_u64_get(void *data, u64 *val)
21 *val = in_be64((u64 __iomem *)data);
25 static int debugfs_io_u64_set(void *data, u64 val)
27 out_be64((u64 __iomem *)data, val);
30 DEFINE_DEBUGFS_ATTRIBUTE(fops_io_x64, debugfs_io_u64_get, debugfs_io_u64_set,
33 static struct dentry *debugfs_create_io_x64(const char *name, umode_t mode,
34 struct dentry *parent, u64 __iomem *value)
36 return debugfs_create_file_unsafe(name, mode, parent,
37 (void __force *)value, &fops_io_x64);
40 void cxl_debugfs_add_adapter_regs_psl9(struct cxl *adapter, struct dentry *dir)
42 debugfs_create_io_x64("fir1", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_FIR1));
43 debugfs_create_io_x64("fir_mask", 0400, dir,
44 _cxl_p1_addr(adapter, CXL_PSL9_FIR_MASK));
45 debugfs_create_io_x64("fir_cntl", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_FIR_CNTL));
46 debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_TRACECFG));
47 debugfs_create_io_x64("debug", 0600, dir,
48 _cxl_p1_addr(adapter, CXL_PSL9_DEBUG));
49 debugfs_create_io_x64("xsl-debug", 0600, dir,
50 _cxl_p1_addr(adapter, CXL_XSL9_DBG));
53 void cxl_debugfs_add_adapter_regs_psl8(struct cxl *adapter, struct dentry *dir)
55 debugfs_create_io_x64("fir1", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR1));
56 debugfs_create_io_x64("fir2", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR2));
57 debugfs_create_io_x64("fir_cntl", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR_CNTL));
58 debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_TRACE));
61 int cxl_debugfs_adapter_add(struct cxl *adapter)
69 snprintf(buf, 32, "card%i", adapter->adapter_num);
70 dir = debugfs_create_dir(buf, cxl_debugfs);
73 adapter->debugfs = dir;
75 debugfs_create_io_x64("err_ivte", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_ErrIVTE));
77 if (adapter->native->sl_ops->debugfs_add_adapter_regs)
78 adapter->native->sl_ops->debugfs_add_adapter_regs(adapter, dir);
82 void cxl_debugfs_adapter_remove(struct cxl *adapter)
84 debugfs_remove_recursive(adapter->debugfs);
87 void cxl_debugfs_add_afu_regs_psl9(struct cxl_afu *afu, struct dentry *dir)
89 debugfs_create_io_x64("serr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SERR_An));
92 void cxl_debugfs_add_afu_regs_psl8(struct cxl_afu *afu, struct dentry *dir)
94 debugfs_create_io_x64("sstp0", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_SSTP0_An));
95 debugfs_create_io_x64("sstp1", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_SSTP1_An));
97 debugfs_create_io_x64("fir", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_FIR_SLICE_An));
98 debugfs_create_io_x64("serr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SERR_An));
99 debugfs_create_io_x64("afu_debug", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_AFU_DEBUG_An));
100 debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SLICE_TRACE));
103 int cxl_debugfs_afu_add(struct cxl_afu *afu)
108 if (!afu->adapter->debugfs)
111 snprintf(buf, 32, "psl%i.%i", afu->adapter->adapter_num, afu->slice);
112 dir = debugfs_create_dir(buf, afu->adapter->debugfs);
117 debugfs_create_io_x64("sr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SR_An));
118 debugfs_create_io_x64("dsisr", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_DSISR_An));
119 debugfs_create_io_x64("dar", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_DAR_An));
121 debugfs_create_io_x64("err_status", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_ErrStat_An));
123 if (afu->adapter->native->sl_ops->debugfs_add_afu_regs)
124 afu->adapter->native->sl_ops->debugfs_add_afu_regs(afu, dir);
129 void cxl_debugfs_afu_remove(struct cxl_afu *afu)
131 debugfs_remove_recursive(afu->debugfs);
134 int __init cxl_debugfs_init(void)
138 if (!cpu_has_feature(CPU_FTR_HVMODE))
141 ent = debugfs_create_dir("cxl", NULL);
149 void cxl_debugfs_exit(void)
151 debugfs_remove_recursive(cxl_debugfs);