drivers/gpu/host1x/hw/debug_hw.c

   1 /*
   2  * Copyright (C) 2010 Google, Inc.
   3  * Author: Erik Gilling <konkers@android.com>
   4  *
   5  * Copyright (C) 2011-2013 NVIDIA Corporation
   6  *
   7  * This software is licensed under the terms of the GNU General Public
   8  * License version 2, as published by the Free Software Foundation, and
   9  * may be copied, distributed, and modified under those terms.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  */
  17
  18 #include "../dev.h"
  19 #include "../debug.h"
  20 #include "../cdma.h"
  21 #include "../channel.h"
  22
  23 #define HOST1X_DEBUG_MAX_PAGE_OFFSET 102400
  24
  25 enum {
  26         HOST1X_OPCODE_SETCLASS  = 0x00,
  27         HOST1X_OPCODE_INCR      = 0x01,
  28         HOST1X_OPCODE_NONINCR   = 0x02,
  29         HOST1X_OPCODE_MASK      = 0x03,
  30         HOST1X_OPCODE_IMM       = 0x04,
  31         HOST1X_OPCODE_RESTART   = 0x05,
  32         HOST1X_OPCODE_GATHER    = 0x06,
  33         HOST1X_OPCODE_EXTEND    = 0x0e,
  34 };
  35
  36 enum {
  37         HOST1X_OPCODE_EXTEND_ACQUIRE_MLOCK      = 0x00,
  38         HOST1X_OPCODE_EXTEND_RELEASE_MLOCK      = 0x01,
  39 };
  40
  41 static unsigned int show_channel_command(struct output *o, u32 val)
  42 {
  43         unsigned mask;
  44         unsigned subop;
  45
  46         switch (val >> 28) {
  47         case HOST1X_OPCODE_SETCLASS:
  48                 mask = val & 0x3f;
  49                 if (mask) {
  50                         host1x_debug_output(o, "SETCL(class=%03x, offset=%03x, mask=%02x, [",
  51                                             val >> 6 & 0x3ff,
  52                                             val >> 16 & 0xfff, mask);
  53                         return hweight8(mask);
  54                 } else {
  55                         host1x_debug_output(o, "SETCL(class=%03x)\n",
  56                                             val >> 6 & 0x3ff);
  57                         return 0;
  58                 }
  59
  60         case HOST1X_OPCODE_INCR:
  61                 host1x_debug_output(o, "INCR(offset=%03x, [",
  62                                     val >> 16 & 0xfff);
  63                 return val & 0xffff;
  64
  65         case HOST1X_OPCODE_NONINCR:
  66                 host1x_debug_output(o, "NONINCR(offset=%03x, [",
  67                                     val >> 16 & 0xfff);
  68                 return val & 0xffff;
  69
  70         case HOST1X_OPCODE_MASK:
  71                 mask = val & 0xffff;
  72                 host1x_debug_output(o, "MASK(offset=%03x, mask=%03x, [",
  73                                     val >> 16 & 0xfff, mask);
  74                 return hweight16(mask);
  75
  76         case HOST1X_OPCODE_IMM:
  77                 host1x_debug_output(o, "IMM(offset=%03x, data=%03x)\n",
  78                                     val >> 16 & 0xfff, val & 0xffff);
  79                 return 0;
  80
  81         case HOST1X_OPCODE_RESTART:
  82                 host1x_debug_output(o, "RESTART(offset=%08x)\n", val << 4);
  83                 return 0;
  84
  85         case HOST1X_OPCODE_GATHER:
  86                 host1x_debug_output(o, "GATHER(offset=%03x, insert=%d, type=%d, count=%04x, addr=[",
  87                                     val >> 16 & 0xfff, val >> 15 & 0x1,
  88                                     val >> 14 & 0x1, val & 0x3fff);
  89                 return 1;
  90
  91         case HOST1X_OPCODE_EXTEND:
  92                 subop = val >> 24 & 0xf;
  93                 if (subop == HOST1X_OPCODE_EXTEND_ACQUIRE_MLOCK)
  94                         host1x_debug_output(o, "ACQUIRE_MLOCK(index=%d)\n",
  95                                             val & 0xff);
  96                 else if (subop == HOST1X_OPCODE_EXTEND_RELEASE_MLOCK)
  97                         host1x_debug_output(o, "RELEASE_MLOCK(index=%d)\n",
  98                                             val & 0xff);
  99                 else
 100                         host1x_debug_output(o, "EXTEND_UNKNOWN(%08x)\n", val);
 101                 return 0;
 102
 103         default:
 104                 return 0;
 105         }
 106 }
 107
 108 static void show_gather(struct output *o, phys_addr_t phys_addr,
 109                         unsigned int words, struct host1x_cdma *cdma,
 110                         phys_addr_t pin_addr, u32 *map_addr)
 111 {
 112         /* Map dmaget cursor to corresponding mem handle */
 113         u32 offset = phys_addr - pin_addr;
 114         unsigned int data_count = 0, i;
 115
 116         /*
 117          * Sometimes we're given different hardware address to the same
 118          * page - in these cases the offset will get an invalid number and
 119          * we just have to bail out.
 120          */
 121         if (offset > HOST1X_DEBUG_MAX_PAGE_OFFSET) {
 122                 host1x_debug_output(o, "[address mismatch]\n");
 123                 return;
 124         }
 125
 126         for (i = 0; i < words; i++) {
 127                 u32 addr = phys_addr + i * 4;
 128                 u32 val = *(map_addr + offset / 4 + i);
 129
 130                 if (!data_count) {
 131                         host1x_debug_output(o, "%08x: %08x:", addr, val);
 132                         data_count = show_channel_command(o, val);
 133                 } else {
 134                         host1x_debug_output(o, "%08x%s", val,
 135                                             data_count > 0 ? ", " : "])\n");
 136                         data_count--;
 137                 }
 138         }
 139 }
 140
 141 static void show_channel_gathers(struct output *o, struct host1x_cdma *cdma)
 142 {
 143         struct host1x_job *job;
 144
 145         list_for_each_entry(job, &cdma->sync_queue, list) {
 146                 int i;
 147                 host1x_debug_output(o, "\n%p: JOB, syncpt_id=%d, syncpt_val=%d, first_get=%08x, timeout=%d num_slots=%d, num_handles=%d\n",
 148                                     job, job->syncpt_id, job->syncpt_end,
 149                                     job->first_get, job->timeout,
 150                                     job->num_slots, job->num_unpins);
 151
 152                 for (i = 0; i < job->num_gathers; i++) {
 153                         struct host1x_job_gather *g = &job->gathers[i];
 154                         u32 *mapped;
 155
 156                         if (job->gather_copy_mapped)
 157                                 mapped = (u32 *)job->gather_copy_mapped;
 158                         else
 159                                 mapped = host1x_bo_mmap(g->bo);
 160
 161                         if (!mapped) {
 162                                 host1x_debug_output(o, "[could not mmap]\n");
 163                                 continue;
 164                         }
 165
 166                         host1x_debug_output(o, "    GATHER at %#llx+%04x, %d words\n",
 167                                             (u64)g->base, g->offset, g->words);
 168
 169                         show_gather(o, g->base + g->offset, g->words, cdma,
 170                                     g->base, mapped);
 171
 172                         if (!job->gather_copy_mapped)
 173                                 host1x_bo_munmap(g->bo, mapped);
 174                 }
 175         }
 176 }
 177
 178 static void host1x_debug_show_channel_cdma(struct host1x *host,
 179                                            struct host1x_channel *ch,
 180                                            struct output *o)
 181 {
 182         struct host1x_cdma *cdma = &ch->cdma;
 183         u32 dmaput, dmaget, dmactrl;
 184         u32 cbstat, cbread;
 185         u32 val, base, baseval;
 186
 187         dmaput = host1x_ch_readl(ch, HOST1X_CHANNEL_DMAPUT);
 188         dmaget = host1x_ch_readl(ch, HOST1X_CHANNEL_DMAGET);
 189         dmactrl = host1x_ch_readl(ch, HOST1X_CHANNEL_DMACTRL);
 190         cbread = host1x_sync_readl(host, HOST1X_SYNC_CBREAD(ch->id));
 191         cbstat = host1x_sync_readl(host, HOST1X_SYNC_CBSTAT(ch->id));
 192
 193         host1x_debug_output(o, "%d-%s: ", ch->id, dev_name(ch->dev));
 194
 195         if (HOST1X_CHANNEL_DMACTRL_DMASTOP_V(dmactrl) ||
 196             !ch->cdma.push_buffer.mapped) {
 197                 host1x_debug_output(o, "inactive\n\n");
 198                 return;
 199         }
 200
 201         if (HOST1X_SYNC_CBSTAT_CBCLASS_V(cbstat) == HOST1X_CLASS_HOST1X &&
 202             HOST1X_SYNC_CBSTAT_CBOFFSET_V(cbstat) ==
 203             HOST1X_UCLASS_WAIT_SYNCPT)
 204                 host1x_debug_output(o, "waiting on syncpt %d val %d\n",
 205                                     cbread >> 24, cbread & 0xffffff);
 206         else if (HOST1X_SYNC_CBSTAT_CBCLASS_V(cbstat) ==
 207            HOST1X_CLASS_HOST1X &&
 208            HOST1X_SYNC_CBSTAT_CBOFFSET_V(cbstat) ==
 209            HOST1X_UCLASS_WAIT_SYNCPT_BASE) {
 210
 211                 base = (cbread >> 16) & 0xff;
 212                 baseval =
 213                         host1x_sync_readl(host, HOST1X_SYNC_SYNCPT_BASE(base));
 214                 val = cbread & 0xffff;
 215                 host1x_debug_output(o, "waiting on syncpt %d val %d (base %d = %d; offset = %d)\n",
 216                                     cbread >> 24, baseval + val, base,
 217                                     baseval, val);
 218         } else
 219                 host1x_debug_output(o, "active class %02x, offset %04x, val %08x\n",
 220                                     HOST1X_SYNC_CBSTAT_CBCLASS_V(cbstat),
 221                                     HOST1X_SYNC_CBSTAT_CBOFFSET_V(cbstat),
 222                                     cbread);
 223
 224         host1x_debug_output(o, "DMAPUT %08x, DMAGET %08x, DMACTL %08x\n",
 225                             dmaput, dmaget, dmactrl);
 226         host1x_debug_output(o, "CBREAD %08x, CBSTAT %08x\n", cbread, cbstat);
 227
 228         show_channel_gathers(o, cdma);
 229         host1x_debug_output(o, "\n");
 230 }
 231
 232 static void host1x_debug_show_channel_fifo(struct host1x *host,
 233                                            struct host1x_channel *ch,
 234                                            struct output *o)
 235 {
 236         u32 val, rd_ptr, wr_ptr, start, end;
 237         unsigned int data_count = 0;
 238
 239         host1x_debug_output(o, "%d: fifo:\n", ch->id);
 240
 241         val = host1x_ch_readl(ch, HOST1X_CHANNEL_FIFOSTAT);
 242         host1x_debug_output(o, "FIFOSTAT %08x\n", val);
 243         if (HOST1X_CHANNEL_FIFOSTAT_CFEMPTY_V(val)) {
 244                 host1x_debug_output(o, "[empty]\n");
 245                 return;
 246         }
 247
 248         host1x_sync_writel(host, 0x0, HOST1X_SYNC_CFPEEK_CTRL);
 249         host1x_sync_writel(host, HOST1X_SYNC_CFPEEK_CTRL_ENA_F(1) |
 250                            HOST1X_SYNC_CFPEEK_CTRL_CHANNR_F(ch->id),
 251                            HOST1X_SYNC_CFPEEK_CTRL);
 252
 253         val = host1x_sync_readl(host, HOST1X_SYNC_CFPEEK_PTRS);
 254         rd_ptr = HOST1X_SYNC_CFPEEK_PTRS_CF_RD_PTR_V(val);
 255         wr_ptr = HOST1X_SYNC_CFPEEK_PTRS_CF_WR_PTR_V(val);
 256
 257         val = host1x_sync_readl(host, HOST1X_SYNC_CF_SETUP(ch->id));
 258         start = HOST1X_SYNC_CF_SETUP_BASE_V(val);
 259         end = HOST1X_SYNC_CF_SETUP_LIMIT_V(val);
 260
 261         do {
 262                 host1x_sync_writel(host, 0x0, HOST1X_SYNC_CFPEEK_CTRL);
 263                 host1x_sync_writel(host, HOST1X_SYNC_CFPEEK_CTRL_ENA_F(1) |
 264                                    HOST1X_SYNC_CFPEEK_CTRL_CHANNR_F(ch->id) |
 265                                    HOST1X_SYNC_CFPEEK_CTRL_ADDR_F(rd_ptr),
 266                                    HOST1X_SYNC_CFPEEK_CTRL);
 267                 val = host1x_sync_readl(host, HOST1X_SYNC_CFPEEK_READ);
 268
 269                 if (!data_count) {
 270                         host1x_debug_output(o, "%08x:", val);
 271                         data_count = show_channel_command(o, val);
 272                 } else {
 273                         host1x_debug_output(o, "%08x%s", val,
 274                                             data_count > 0 ? ", " : "])\n");
 275                         data_count--;
 276                 }
 277
 278                 if (rd_ptr == end)
 279                         rd_ptr = start;
 280                 else
 281                         rd_ptr++;
 282         } while (rd_ptr != wr_ptr);
 283
 284         if (data_count)
 285                 host1x_debug_output(o, ", ...])\n");
 286         host1x_debug_output(o, "\n");
 287
 288         host1x_sync_writel(host, 0x0, HOST1X_SYNC_CFPEEK_CTRL);
 289 }
 290
 291 static void host1x_debug_show_mlocks(struct host1x *host, struct output *o)
 292 {
 293         int i;
 294
 295         host1x_debug_output(o, "---- mlocks ----\n");
 296         for (i = 0; i < host1x_syncpt_nb_mlocks(host); i++) {
 297                 u32 owner =
 298                         host1x_sync_readl(host, HOST1X_SYNC_MLOCK_OWNER(i));
 299                 if (HOST1X_SYNC_MLOCK_OWNER_CH_OWNS_V(owner))
 300                         host1x_debug_output(o, "%d: locked by channel %d\n",
 301                                 i, HOST1X_SYNC_MLOCK_OWNER_CHID_F(owner));
 302                 else if (HOST1X_SYNC_MLOCK_OWNER_CPU_OWNS_V(owner))
 303                         host1x_debug_output(o, "%d: locked by cpu\n", i);
 304                 else
 305                         host1x_debug_output(o, "%d: unlocked\n", i);
 306         }
 307         host1x_debug_output(o, "\n");
 308 }
 309
 310 static const struct host1x_debug_ops host1x_debug_ops = {
 311         .show_channel_cdma = host1x_debug_show_channel_cdma,
 312         .show_channel_fifo = host1x_debug_show_channel_fifo,
 313         .show_mlocks = host1x_debug_show_mlocks,
 314 };