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 void cxl_stop_trace_psl9(struct cxl *adapter)
21 cxl_p1_write(adapter, CXL_PSL9_TRACECFG, 0x4480000000000000ULL);
24 void cxl_stop_trace_psl8(struct cxl *adapter)
29 cxl_p1_write(adapter, CXL_PSL_TRACE, 0x8000000000000017LL);
31 /* Stop the slice traces */
32 spin_lock(&adapter->afu_list_lock);
33 for (slice = 0; slice < adapter->slices; slice++) {
34 if (adapter->afu[slice])
35 cxl_p1n_write(adapter->afu[slice], CXL_PSL_SLICE_TRACE, 0x8000000000000000LL);
37 spin_unlock(&adapter->afu_list_lock);
40 /* Helpers to export CXL mmaped IO registers via debugfs */
41 static int debugfs_io_u64_get(void *data, u64 *val)
43 *val = in_be64((u64 __iomem *)data);
47 static int debugfs_io_u64_set(void *data, u64 val)
49 out_be64((u64 __iomem *)data, val);
52 DEFINE_DEBUGFS_ATTRIBUTE(fops_io_x64, debugfs_io_u64_get, debugfs_io_u64_set,
55 static struct dentry *debugfs_create_io_x64(const char *name, umode_t mode,
56 struct dentry *parent, u64 __iomem *value)
58 return debugfs_create_file_unsafe(name, mode, parent,
59 (void __force *)value, &fops_io_x64);
62 void cxl_debugfs_add_adapter_regs_psl9(struct cxl *adapter, struct dentry *dir)
64 debugfs_create_io_x64("fir1", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_FIR1));
65 debugfs_create_io_x64("fir2", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_FIR2));
66 debugfs_create_io_x64("fir_cntl", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_FIR_CNTL));
67 debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1_addr(adapter, CXL_PSL9_TRACECFG));
70 void cxl_debugfs_add_adapter_regs_psl8(struct cxl *adapter, struct dentry *dir)
72 debugfs_create_io_x64("fir1", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR1));
73 debugfs_create_io_x64("fir2", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR2));
74 debugfs_create_io_x64("fir_cntl", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_FIR_CNTL));
75 debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_TRACE));
78 void cxl_debugfs_add_adapter_regs_xsl(struct cxl *adapter, struct dentry *dir)
80 debugfs_create_io_x64("fec", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_XSL_FEC));
83 int cxl_debugfs_adapter_add(struct cxl *adapter)
91 snprintf(buf, 32, "card%i", adapter->adapter_num);
92 dir = debugfs_create_dir(buf, cxl_debugfs);
95 adapter->debugfs = dir;
97 debugfs_create_io_x64("err_ivte", S_IRUSR, dir, _cxl_p1_addr(adapter, CXL_PSL_ErrIVTE));
99 if (adapter->native->sl_ops->debugfs_add_adapter_regs)
100 adapter->native->sl_ops->debugfs_add_adapter_regs(adapter, dir);
104 void cxl_debugfs_adapter_remove(struct cxl *adapter)
106 debugfs_remove_recursive(adapter->debugfs);
109 void cxl_debugfs_add_afu_regs_psl9(struct cxl_afu *afu, struct dentry *dir)
111 debugfs_create_io_x64("serr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SERR_An));
114 void cxl_debugfs_add_afu_regs_psl8(struct cxl_afu *afu, struct dentry *dir)
116 debugfs_create_io_x64("sstp0", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_SSTP0_An));
117 debugfs_create_io_x64("sstp1", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_SSTP1_An));
119 debugfs_create_io_x64("fir", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_FIR_SLICE_An));
120 debugfs_create_io_x64("serr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SERR_An));
121 debugfs_create_io_x64("afu_debug", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_AFU_DEBUG_An));
122 debugfs_create_io_x64("trace", S_IRUSR | S_IWUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SLICE_TRACE));
125 int cxl_debugfs_afu_add(struct cxl_afu *afu)
130 if (!afu->adapter->debugfs)
133 snprintf(buf, 32, "psl%i.%i", afu->adapter->adapter_num, afu->slice);
134 dir = debugfs_create_dir(buf, afu->adapter->debugfs);
139 debugfs_create_io_x64("sr", S_IRUSR, dir, _cxl_p1n_addr(afu, CXL_PSL_SR_An));
140 debugfs_create_io_x64("dsisr", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_DSISR_An));
141 debugfs_create_io_x64("dar", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_DAR_An));
143 debugfs_create_io_x64("err_status", S_IRUSR, dir, _cxl_p2n_addr(afu, CXL_PSL_ErrStat_An));
145 if (afu->adapter->native->sl_ops->debugfs_add_afu_regs)
146 afu->adapter->native->sl_ops->debugfs_add_afu_regs(afu, dir);
151 void cxl_debugfs_afu_remove(struct cxl_afu *afu)
153 debugfs_remove_recursive(afu->debugfs);
156 int __init cxl_debugfs_init(void)
160 if (!cpu_has_feature(CPU_FTR_HVMODE))
163 ent = debugfs_create_dir("cxl", NULL);
171 void cxl_debugfs_exit(void)
173 debugfs_remove_recursive(cxl_debugfs);