1/* 2 * Wireless Host Controller (WHC) debug. 3 * 4 * Copyright (C) 2008 Cambridge Silicon Radio Ltd. 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License version 8 * 2 as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. 17 */ 18#include <linux/slab.h> 19#include <linux/kernel.h> 20#include <linux/debugfs.h> 21#include <linux/seq_file.h> 22 23#include "../../wusbcore/wusbhc.h" 24 25#include "whcd.h" 26 27struct whc_dbg { 28 struct dentry *di_f; 29 struct dentry *asl_f; 30 struct dentry *pzl_f; 31}; 32 33static void qset_print(struct seq_file *s, struct whc_qset *qset) 34{ 35 static const char *qh_type[] = { 36 "ctrl", "isoc", "bulk", "intr", "rsvd", "rsvd", "rsvd", "lpintr", }; 37 struct whc_std *std; 38 struct urb *urb = NULL; 39 int i; 40 41 seq_printf(s, "qset %08x", (u32)qset->qset_dma); 42 if (&qset->list_node == qset->whc->async_list.prev) { 43 seq_printf(s, " (dummy)\n"); 44 } else { 45 seq_printf(s, " ep%d%s-%s maxpkt: %d\n", 46 qset->qh.info1 & 0x0f, 47 (qset->qh.info1 >> 4) & 0x1 ? "in" : "out", 48 qh_type[(qset->qh.info1 >> 5) & 0x7], 49 (qset->qh.info1 >> 16) & 0xffff); 50 } 51 seq_printf(s, " -> %08x\n", (u32)qset->qh.link); 52 seq_printf(s, " info: %08x %08x %08x\n", 53 qset->qh.info1, qset->qh.info2, qset->qh.info3); 54 seq_printf(s, " sts: %04x errs: %d curwin: %08x\n", 55 qset->qh.status, qset->qh.err_count, qset->qh.cur_window); 56 seq_printf(s, " TD: sts: %08x opts: %08x\n", 57 qset->qh.overlay.qtd.status, qset->qh.overlay.qtd.options); 58 59 for (i = 0; i < WHCI_QSET_TD_MAX; i++) { 60 seq_printf(s, " %c%c TD[%d]: sts: %08x opts: %08x ptr: %08x\n", 61 i == qset->td_start ? 'S' : ' ', 62 i == qset->td_end ? 'E' : ' ', 63 i, qset->qtd[i].status, qset->qtd[i].options, 64 (u32)qset->qtd[i].page_list_ptr); 65 } 66 seq_printf(s, " ntds: %d\n", qset->ntds); 67 list_for_each_entry(std, &qset->stds, list_node) { 68 if (urb != std->urb) { 69 urb = std->urb; 70 seq_printf(s, " urb %p transferred: %d bytes\n", urb, 71 urb->actual_length); 72 } 73 if (std->qtd) 74 seq_printf(s, " sTD[%td]: %zu bytes @ %08x\n", 75 std->qtd - &qset->qtd[0], 76 std->len, std->num_pointers ? 77 (u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr); 78 else 79 seq_printf(s, " sTD[-]: %zd bytes @ %08x\n", 80 std->len, std->num_pointers ? 81 (u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr); 82 } 83} 84 85static int di_print(struct seq_file *s, void *p) 86{ 87 struct whc *whc = s->private; 88 char buf[72]; 89 int d; 90 91 for (d = 0; d < whc->n_devices; d++) { 92 struct di_buf_entry *di = &whc->di_buf[d]; 93 94 bitmap_scnprintf(buf, sizeof(buf), 95 (unsigned long *)di->availability_info, UWB_NUM_MAS); 96 97 seq_printf(s, "DI[%d]\n", d); 98 seq_printf(s, " availability: %s\n", buf); 99 seq_printf(s, " %c%c key idx: %d dev addr: %d\n", 100 (di->addr_sec_info & WHC_DI_SECURE) ? 'S' : ' ', 101 (di->addr_sec_info & WHC_DI_DISABLE) ? 'D' : ' ', 102 (di->addr_sec_info & WHC_DI_KEY_IDX_MASK) >> 8, 103 (di->addr_sec_info & WHC_DI_DEV_ADDR_MASK)); 104 } 105 return 0; 106} 107 108static int asl_print(struct seq_file *s, void *p) 109{ 110 struct whc *whc = s->private; 111 struct whc_qset *qset; 112 113 list_for_each_entry(qset, &whc->async_list, list_node) { 114 qset_print(s, qset); 115 } 116 117 return 0; 118} 119 120static int pzl_print(struct seq_file *s, void *p) 121{ 122 struct whc *whc = s->private; 123 struct whc_qset *qset; 124 int period; 125 126 for (period = 0; period < 5; period++) { 127 seq_printf(s, "Period %d\n", period); 128 list_for_each_entry(qset, &whc->periodic_list[period], list_node) { 129 qset_print(s, qset); 130 } 131 } 132 return 0; 133} 134 135static int di_open(struct inode *inode, struct file *file) 136{ 137 return single_open(file, di_print, inode->i_private); 138} 139 140static int asl_open(struct inode *inode, struct file *file) 141{ 142 return single_open(file, asl_print, inode->i_private); 143} 144 145static int pzl_open(struct inode *inode, struct file *file) 146{ 147 return single_open(file, pzl_print, inode->i_private); 148} 149 150static const struct file_operations di_fops = { 151 .open = di_open, 152 .read = seq_read, 153 .llseek = seq_lseek, 154 .release = single_release, 155 .owner = THIS_MODULE, 156}; 157 158static const struct file_operations asl_fops = { 159 .open = asl_open, 160 .read = seq_read, 161 .llseek = seq_lseek, 162 .release = single_release, 163 .owner = THIS_MODULE, 164}; 165 166static const struct file_operations pzl_fops = { 167 .open = pzl_open, 168 .read = seq_read, 169 .llseek = seq_lseek, 170 .release = single_release, 171 .owner = THIS_MODULE, 172}; 173 174void whc_dbg_init(struct whc *whc) 175{ 176 if (whc->wusbhc.pal.debugfs_dir == NULL) 177 return; 178 179 whc->dbg = kzalloc(sizeof(struct whc_dbg), GFP_KERNEL); 180 if (whc->dbg == NULL) 181 return; 182 183 whc->dbg->di_f = debugfs_create_file("di", 0444, 184 whc->wusbhc.pal.debugfs_dir, whc, 185 &di_fops); 186 whc->dbg->asl_f = debugfs_create_file("asl", 0444, 187 whc->wusbhc.pal.debugfs_dir, whc, 188 &asl_fops); 189 whc->dbg->pzl_f = debugfs_create_file("pzl", 0444, 190 whc->wusbhc.pal.debugfs_dir, whc, 191 &pzl_fops); 192} 193 194void whc_dbg_clean_up(struct whc *whc) 195{ 196 if (whc->dbg) { 197 debugfs_remove(whc->dbg->pzl_f); 198 debugfs_remove(whc->dbg->asl_f); 199 debugfs_remove(whc->dbg->di_f); 200 kfree(whc->dbg); 201 } 202} 203