release/src-rt-6.x/linux/linux-2.6/drivers/media/video/ivtv/ivtv-firmware.c

   1 /*
   2     ivtv firmware functions.
   3     Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
   4     Copyright (C) 2004  Chris Kennedy <c@groovy.org>
   5     Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>
   6
   7     This program is free software; you can redistribute it and/or modify
   8     it under the terms of the GNU General Public License as published by
   9     the Free Software Foundation; either version 2 of the License, or
  10     (at your option) any later version.
  11
  12     This program is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15     GNU General Public License for more details.
  16
  17     You should have received a copy of the GNU General Public License
  18     along with this program; if not, write to the Free Software
  19     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "ivtv-driver.h"
  23 #include "ivtv-mailbox.h"
  24 #include "ivtv-firmware.h"
  25 #include <linux/firmware.h>
  26
  27 #define IVTV_MASK_SPU_ENABLE            0xFFFFFFFE
  28 #define IVTV_MASK_VPU_ENABLE15          0xFFFFFFF6
  29 #define IVTV_MASK_VPU_ENABLE16          0xFFFFFFFB
  30 #define IVTV_CMD_VDM_STOP               0x00000000
  31 #define IVTV_CMD_AO_STOP                0x00000005
  32 #define IVTV_CMD_APU_PING               0x00000000
  33 #define IVTV_CMD_VPU_STOP15             0xFFFFFFFE
  34 #define IVTV_CMD_VPU_STOP16             0xFFFFFFEE
  35 #define IVTV_CMD_HW_BLOCKS_RST          0xFFFFFFFF
  36 #define IVTV_CMD_SPU_STOP               0x00000001
  37 #define IVTV_CMD_SDRAM_PRECHARGE_INIT   0x0000001A
  38 #define IVTV_CMD_SDRAM_REFRESH_INIT     0x80000640
  39 #define IVTV_SDRAM_SLEEPTIME            (60 * HZ / 100) /* 600 ms */
  40
  41 #define IVTV_DECODE_INIT_MPEG_FILENAME  "v4l-cx2341x-init.mpg"
  42 #define IVTV_DECODE_INIT_MPEG_SIZE      (152*1024)
  43
  44 /* Encoder/decoder firmware sizes */
  45 #define IVTV_FW_ENC_SIZE                (376836)
  46 #define IVTV_FW_DEC_SIZE                (256*1024)
  47
  48 static int load_fw_direct(const char *fn, volatile u8 __iomem *mem, struct ivtv *itv, long size)
  49 {
  50         const struct firmware *fw = NULL;
  51         int retries = 3;
  52
  53 retry:
  54         if (retries && request_firmware(&fw, fn, &itv->dev->dev) == 0) {
  55                 int i;
  56                 volatile u32 __iomem *dst = (volatile u32 __iomem *)mem;
  57                 const u32 *src = (const u32 *)fw->data;
  58
  59                 /* temporarily allow 256 KB encoding firmwares as well for
  60                    compatibility with blackbird cards */
  61                 if (fw->size != size && fw->size != 256 * 1024) {
  62                         /* Due to race conditions in firmware loading (esp. with udev <0.95)
  63                            the wrong file was sometimes loaded. So we check filesizes to
  64                            see if at least the right-sized file was loaded. If not, then we
  65                            retry. */
  66                         IVTV_INFO("retry: file loaded was not %s (expected size %ld, got %zd)\n", fn, size, fw->size);
  67                         release_firmware(fw);
  68                         retries--;
  69                         goto retry;
  70                 }
  71                 for (i = 0; i < fw->size; i += 4) {
  72                         /* no need for endianness conversion on the ppc */
  73                         __raw_writel(*src, dst);
  74                         dst++;
  75                         src++;
  76                 }
  77                 release_firmware(fw);
  78                 IVTV_INFO("loaded %s firmware (%zd bytes)\n", fn, fw->size);
  79                 return size;
  80         }
  81         IVTV_ERR("unable to open firmware %s (must be %ld bytes)\n", fn, size);
  82         IVTV_ERR("did you put the firmware in the hotplug firmware directory?\n");
  83         return -ENOMEM;
  84 }
  85
  86 void ivtv_halt_firmware(struct ivtv *itv)
  87 {
  88         IVTV_DEBUG_INFO("Preparing for firmware halt.\n");
  89         if (itv->has_cx23415 && itv->dec_mbox.mbox)
  90                 ivtv_vapi(itv, CX2341X_DEC_HALT_FW, 0);
  91         if (itv->enc_mbox.mbox)
  92                 ivtv_vapi(itv, CX2341X_ENC_HALT_FW, 0);
  93
  94         ivtv_sleep_timeout(HZ / 100, 0);
  95         itv->enc_mbox.mbox = itv->dec_mbox.mbox = NULL;
  96
  97         IVTV_DEBUG_INFO("Stopping VDM\n");
  98         write_reg(IVTV_CMD_VDM_STOP, IVTV_REG_VDM);
  99
 100         IVTV_DEBUG_INFO("Stopping AO\n");
 101         write_reg(IVTV_CMD_AO_STOP, IVTV_REG_AO);
 102
 103         IVTV_DEBUG_INFO("pinging (?) APU\n");
 104         write_reg(IVTV_CMD_APU_PING, IVTV_REG_APU);
 105
 106         IVTV_DEBUG_INFO("Stopping VPU\n");
 107         if (!itv->has_cx23415)
 108                 write_reg(IVTV_CMD_VPU_STOP16, IVTV_REG_VPU);
 109         else
 110                 write_reg(IVTV_CMD_VPU_STOP15, IVTV_REG_VPU);
 111
 112         IVTV_DEBUG_INFO("Resetting Hw Blocks\n");
 113         write_reg(IVTV_CMD_HW_BLOCKS_RST, IVTV_REG_HW_BLOCKS);
 114
 115         IVTV_DEBUG_INFO("Stopping SPU\n");
 116         write_reg(IVTV_CMD_SPU_STOP, IVTV_REG_SPU);
 117
 118         ivtv_sleep_timeout(HZ / 100, 0);
 119
 120         IVTV_DEBUG_INFO("init Encoder SDRAM pre-charge\n");
 121         write_reg(IVTV_CMD_SDRAM_PRECHARGE_INIT, IVTV_REG_ENC_SDRAM_PRECHARGE);
 122
 123         IVTV_DEBUG_INFO("init Encoder SDRAM refresh to 1us\n");
 124         write_reg(IVTV_CMD_SDRAM_REFRESH_INIT, IVTV_REG_ENC_SDRAM_REFRESH);
 125
 126         if (itv->has_cx23415) {
 127                 IVTV_DEBUG_INFO("init Decoder SDRAM pre-charge\n");
 128                 write_reg(IVTV_CMD_SDRAM_PRECHARGE_INIT, IVTV_REG_DEC_SDRAM_PRECHARGE);
 129
 130                 IVTV_DEBUG_INFO("init Decoder SDRAM refresh to 1us\n");
 131                 write_reg(IVTV_CMD_SDRAM_REFRESH_INIT, IVTV_REG_DEC_SDRAM_REFRESH);
 132         }
 133
 134         IVTV_DEBUG_INFO("Sleeping for %dms (600 recommended)\n",
 135                    (int)(IVTV_SDRAM_SLEEPTIME * 1000 / HZ));
 136         ivtv_sleep_timeout(IVTV_SDRAM_SLEEPTIME, 0);
 137 }
 138
 139 void ivtv_firmware_versions(struct ivtv *itv)
 140 {
 141         u32 data[CX2341X_MBOX_MAX_DATA];
 142
 143         /* Encoder */
 144         ivtv_vapi_result(itv, data, CX2341X_ENC_GET_VERSION, 0);
 145         IVTV_INFO("Encoder revision: 0x%08x\n", data[0]);
 146
 147         if (data[0] != 0x02060039)
 148                 IVTV_WARN("Recommended firmware version is 0x02060039.\n");
 149
 150         if (itv->has_cx23415) {
 151                 /* Decoder */
 152                 ivtv_vapi_result(itv, data, CX2341X_DEC_GET_VERSION, 0);
 153                 IVTV_INFO("Decoder revision: 0x%08x\n", data[0]);
 154         }
 155 }
 156
 157 static int ivtv_firmware_copy(struct ivtv *itv)
 158 {
 159         IVTV_DEBUG_INFO("Loading encoder image\n");
 160         if (load_fw_direct(CX2341X_FIRM_ENC_FILENAME,
 161                    itv->enc_mem, itv, IVTV_FW_ENC_SIZE) != IVTV_FW_ENC_SIZE) {
 162                 IVTV_DEBUG_WARN("failed loading encoder firmware\n");
 163                 return -3;
 164         }
 165         if (!itv->has_cx23415)
 166                 return 0;
 167
 168         IVTV_DEBUG_INFO("Loading decoder image\n");
 169         if (load_fw_direct(CX2341X_FIRM_DEC_FILENAME,
 170                    itv->dec_mem, itv, IVTV_FW_DEC_SIZE) != IVTV_FW_DEC_SIZE) {
 171                 IVTV_DEBUG_WARN("failed loading decoder firmware\n");
 172                 return -1;
 173         }
 174         return 0;
 175 }
 176
 177 static volatile struct ivtv_mailbox __iomem *ivtv_search_mailbox(const volatile u8 __iomem *mem, u32 size)
 178 {
 179         int i;
 180
 181         /* mailbox is preceeded by a 16 byte 'magic cookie' starting at a 256-byte
 182            address boundary */
 183         for (i = 0; i < size; i += 0x100) {
 184                 if (readl(mem + i)      == 0x12345678 &&
 185                     readl(mem + i + 4)  == 0x34567812 &&
 186                     readl(mem + i + 8)  == 0x56781234 &&
 187                     readl(mem + i + 12) == 0x78123456) {
 188                         return (volatile struct ivtv_mailbox __iomem *)(mem + i + 16);
 189                 }
 190         }
 191         return NULL;
 192 }
 193
 194 int ivtv_firmware_init(struct ivtv *itv)
 195 {
 196         int err;
 197
 198         ivtv_halt_firmware(itv);
 199
 200         /* load firmware */
 201         err = ivtv_firmware_copy(itv);
 202         if (err) {
 203                 IVTV_DEBUG_WARN("Error %d loading firmware\n", err);
 204                 return err;
 205         }
 206
 207         /* start firmware */
 208         write_reg(read_reg(IVTV_REG_SPU) & IVTV_MASK_SPU_ENABLE, IVTV_REG_SPU);
 209         ivtv_sleep_timeout(HZ / 10, 0);
 210         if (itv->has_cx23415)
 211                 write_reg(read_reg(IVTV_REG_VPU) & IVTV_MASK_VPU_ENABLE15, IVTV_REG_VPU);
 212         else
 213                 write_reg(read_reg(IVTV_REG_VPU) & IVTV_MASK_VPU_ENABLE16, IVTV_REG_VPU);
 214         ivtv_sleep_timeout(HZ / 10, 0);
 215
 216         /* find mailboxes and ping firmware */
 217         itv->enc_mbox.mbox = ivtv_search_mailbox(itv->enc_mem, IVTV_ENCODER_SIZE);
 218         if (itv->enc_mbox.mbox == NULL)
 219                 IVTV_ERR("Encoder mailbox not found\n");
 220         else if (ivtv_vapi(itv, CX2341X_ENC_PING_FW, 0)) {
 221                 IVTV_ERR("Encoder firmware dead!\n");
 222                 itv->enc_mbox.mbox = NULL;
 223         }
 224         if (itv->enc_mbox.mbox == NULL)
 225                 return -ENODEV;
 226
 227         if (!itv->has_cx23415)
 228                 return 0;
 229
 230         itv->dec_mbox.mbox = ivtv_search_mailbox(itv->dec_mem, IVTV_DECODER_SIZE);
 231         if (itv->dec_mbox.mbox == NULL)
 232                 IVTV_ERR("Decoder mailbox not found\n");
 233         else if (itv->has_cx23415 && ivtv_vapi(itv, CX2341X_DEC_PING_FW, 0)) {
 234                 IVTV_ERR("Decoder firmware dead!\n");
 235                 itv->dec_mbox.mbox = NULL;
 236         }
 237         return itv->dec_mbox.mbox ? 0 : -ENODEV;
 238 }
 239
 240 void ivtv_init_mpeg_decoder(struct ivtv *itv)
 241 {
 242         u32 data[CX2341X_MBOX_MAX_DATA];
 243         long readbytes;
 244         volatile u8 __iomem *mem_offset;
 245
 246         data[0] = 0;
 247         data[1] = itv->params.width;    /* YUV source width */
 248         data[2] = itv->params.height;
 249         data[3] = itv->params.audio_properties; /* Audio settings to use,
 250                                                            bitmap. see docs. */
 251         if (ivtv_api(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, data)) {
 252                 IVTV_ERR("ivtv_init_mpeg_decoder failed to set decoder source\n");
 253                 return;
 254         }
 255
 256         if (ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1) != 0) {
 257                 IVTV_ERR("ivtv_init_mpeg_decoder failed to start playback\n");
 258                 return;
 259         }
 260         ivtv_api_get_data(&itv->dec_mbox, IVTV_MBOX_DMA, data);
 261         mem_offset = itv->dec_mem + data[1];
 262
 263         if ((readbytes = load_fw_direct(IVTV_DECODE_INIT_MPEG_FILENAME,
 264                 mem_offset, itv, IVTV_DECODE_INIT_MPEG_SIZE)) <= 0) {
 265                 IVTV_DEBUG_WARN("failed to read mpeg decoder initialisation file %s\n",
 266                                 IVTV_DECODE_INIT_MPEG_FILENAME);
 267         } else {
 268                 ivtv_vapi(itv, CX2341X_DEC_SCHED_DMA_FROM_HOST, 3, 0, readbytes, 0);
 269                 ivtv_sleep_timeout(HZ / 10, 0);
 270         }
 271         ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 4, 0, 0, 0, 1);
 272 }