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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright 2016-17 IBM Corp. */ #define pr_fmt(fmt) "vas: " fmt #include <linux/types.h> #include <linux/slab.h> #include <linux/debugfs.h> #include <linux/seq_file.h> #include "vas.h" static struct dentry *vas_debugfs; static char *cop_to_str(int cop) { switch (cop) { case VAS_COP_TYPE_FAULT: return "Fault"; case VAS_COP_TYPE_842: return "NX-842 Normal Priority"; case VAS_COP_TYPE_842_HIPRI: return "NX-842 High Priority"; case VAS_COP_TYPE_GZIP: return "NX-GZIP Normal Priority"; case VAS_COP_TYPE_GZIP_HIPRI: return "NX-GZIP High Priority"; case VAS_COP_TYPE_FTW: return "Fast Thread-wakeup"; default: return "Unknown"; } } static int info_show(struct seq_file *s, void *private) { struct vas_window *window = s->private; mutex_lock(&vas_mutex); /* ensure window is not unmapped */ if (!window->hvwc_map) goto unlock; seq_printf(s, "Type: %s, %s\n", cop_to_str(window->cop), window->tx_win ? "Send" : "Receive"); seq_printf(s, "Pid : %d\n", window->pid); unlock: mutex_unlock(&vas_mutex); return 0; } DEFINE_SHOW_ATTRIBUTE(info); static inline void print_reg(struct seq_file *s, struct vas_window *win, char *name, u32 reg) { seq_printf(s, "0x%016llx %s\n", read_hvwc_reg(win, name, reg), name); } static int hvwc_show(struct seq_file *s, void *private) { struct vas_window *window = s->private; mutex_lock(&vas_mutex); /* ensure window is not unmapped */ if (!window->hvwc_map) goto unlock; print_reg(s, window, VREG(LPID)); print_reg(s, window, VREG(PID)); print_reg(s, window, VREG(XLATE_MSR)); print_reg(s, window, VREG(XLATE_LPCR)); print_reg(s, window, VREG(XLATE_CTL)); print_reg(s, window, VREG(AMR)); print_reg(s, window, VREG(SEIDR)); print_reg(s, window, VREG(FAULT_TX_WIN)); print_reg(s, window, VREG(OSU_INTR_SRC_RA)); print_reg(s, window, VREG(HV_INTR_SRC_RA)); print_reg(s, window, VREG(PSWID)); print_reg(s, window, VREG(LFIFO_BAR)); print_reg(s, window, VREG(LDATA_STAMP_CTL)); print_reg(s, window, VREG(LDMA_CACHE_CTL)); print_reg(s, window, VREG(LRFIFO_PUSH)); print_reg(s, window, VREG(CURR_MSG_COUNT)); print_reg(s, window, VREG(LNOTIFY_AFTER_COUNT)); print_reg(s, window, VREG(LRX_WCRED)); print_reg(s, window, VREG(LRX_WCRED_ADDER)); print_reg(s, window, VREG(TX_WCRED)); print_reg(s, window, VREG(TX_WCRED_ADDER)); print_reg(s, window, VREG(LFIFO_SIZE)); print_reg(s, window, VREG(WINCTL)); print_reg(s, window, VREG(WIN_STATUS)); print_reg(s, window, VREG(WIN_CTX_CACHING_CTL)); print_reg(s, window, VREG(TX_RSVD_BUF_COUNT)); print_reg(s, window, VREG(LRFIFO_WIN_PTR)); print_reg(s, window, VREG(LNOTIFY_CTL)); print_reg(s, window, VREG(LNOTIFY_PID)); print_reg(s, window, VREG(LNOTIFY_LPID)); print_reg(s, window, VREG(LNOTIFY_TID)); print_reg(s, window, VREG(LNOTIFY_SCOPE)); print_reg(s, window, VREG(NX_UTIL_ADDER)); unlock: mutex_unlock(&vas_mutex); return 0; } DEFINE_SHOW_ATTRIBUTE(hvwc); void vas_window_free_dbgdir(struct vas_window *window) { if (window->dbgdir) { debugfs_remove_recursive(window->dbgdir); kfree(window->dbgname); window->dbgdir = NULL; window->dbgname = NULL; } } void vas_window_init_dbgdir(struct vas_window *window) { struct dentry *f, *d; if (!window->vinst->dbgdir) return; window->dbgname = kzalloc(16, GFP_KERNEL); if (!window->dbgname) return; snprintf(window->dbgname, 16, "w%d", window->winid); d = debugfs_create_dir(window->dbgname, window->vinst->dbgdir); if (IS_ERR(d)) goto free_name; window->dbgdir = d; f = debugfs_create_file("info", 0444, d, window, &info_fops); if (IS_ERR(f)) goto remove_dir; f = debugfs_create_file("hvwc", 0444, d, window, &hvwc_fops); if (IS_ERR(f)) goto remove_dir; return; remove_dir: debugfs_remove_recursive(window->dbgdir); window->dbgdir = NULL; free_name: kfree(window->dbgname); window->dbgname = NULL; } void vas_instance_init_dbgdir(struct vas_instance *vinst) { struct dentry *d; vas_init_dbgdir(); if (!vas_debugfs) return; vinst->dbgname = kzalloc(16, GFP_KERNEL); if (!vinst->dbgname) return; snprintf(vinst->dbgname, 16, "v%d", vinst->vas_id); d = debugfs_create_dir(vinst->dbgname, vas_debugfs); if (IS_ERR(d)) goto free_name; vinst->dbgdir = d; return; free_name: kfree(vinst->dbgname); vinst->dbgname = NULL; vinst->dbgdir = NULL; } /* * Set up the "root" VAS debugfs dir. Return if we already set it up * (or failed to) in an earlier instance of VAS. */ void vas_init_dbgdir(void) { static bool first_time = true; if (!first_time) return; first_time = false; vas_debugfs = debugfs_create_dir("vas", NULL); if (IS_ERR(vas_debugfs)) vas_debugfs = NULL; } |