drivers/staging/rtl8712/hal_init.c

   1 /******************************************************************************
   2  * hal_init.c
   3  *
   4  * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
   5  * Linux device driver for RTL8192SU
   6  *
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of version 2 of the GNU General Public License as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  19  *
  20  * Modifications for inclusion into the Linux staging tree are
  21  * Copyright(c) 2010 Larry Finger. All rights reserved.
  22  *
  23  * Contact information:
  24  * WLAN FAE <wlanfae@realtek.com>.
  25  * Larry Finger <Larry.Finger@lwfinger.net>
  26  *
  27  ******************************************************************************/
  28
  29 #define _HAL_INIT_C_
  30
  31 #include <linux/usb.h>
  32 #include <linux/device.h>
  33 #include <linux/usb/ch9.h>
  34 #include <linux/firmware.h>
  35 #include <linux/module.h>
  36
  37 #include "osdep_service.h"
  38 #include "drv_types.h"
  39 #include "rtl871x_byteorder.h"
  40 #include "usb_osintf.h"
  41
  42 #define FWBUFF_ALIGN_SZ 512
  43 #define MAX_DUMP_FWSZ   49152 /*default = 49152 (48k)*/
  44
  45 static void rtl871x_load_fw_cb(const struct firmware *firmware, void *context)
  46 {
  47         struct _adapter *padapter = context;
  48
  49         complete(&padapter->rtl8712_fw_ready);
  50         if (!firmware) {
  51                 struct usb_device *udev = padapter->dvobjpriv.pusbdev;
  52                 struct usb_interface *pusb_intf = padapter->pusb_intf;
  53                 printk(KERN_ERR "r8712u: Firmware request failed\n");
  54                 padapter->fw_found = false;
  55                 usb_put_dev(udev);
  56                 usb_set_intfdata(pusb_intf, NULL);
  57                 return;
  58         }
  59         padapter->fw = firmware;
  60         padapter->fw_found = true;
  61         /* firmware available - start netdev */
  62         register_netdev(padapter->pnetdev);
  63 }
  64
  65 static const char firmware_file[] = "rtlwifi/rtl8712u.bin";
  66
  67 int rtl871x_load_fw(struct _adapter *padapter)
  68 {
  69         struct device *dev = &padapter->dvobjpriv.pusbdev->dev;
  70         int rc;
  71
  72         init_completion(&padapter->rtl8712_fw_ready);
  73         printk(KERN_INFO "r8712u: Loading firmware from \"%s\"\n",
  74                firmware_file);
  75         rc = request_firmware_nowait(THIS_MODULE, 1, firmware_file, dev,
  76                                      GFP_KERNEL, padapter, rtl871x_load_fw_cb);
  77         if (rc)
  78                 printk(KERN_ERR "r8712u: Firmware request error %d\n", rc);
  79         return rc;
  80 }
  81 MODULE_FIRMWARE("rtlwifi/rtl8712u.bin");
  82
  83 static u32 rtl871x_open_fw(struct _adapter *padapter, const u8 **ppmappedfw)
  84 {
  85         const struct firmware **praw = &padapter->fw;
  86
  87         if (padapter->fw->size > 200000) {
  88                 printk(KERN_ERR "r8172u: Badfw->size of %d\n",
  89                        (int)padapter->fw->size);
  90                 return 0;
  91         }
  92         *ppmappedfw = (u8 *)((*praw)->data);
  93         return (*praw)->size;
  94 }
  95
  96 static void fill_fwpriv(struct _adapter *padapter, struct fw_priv *pfwpriv)
  97 {
  98         struct dvobj_priv *pdvobj = (struct dvobj_priv *)&padapter->dvobjpriv;
  99         struct registry_priv *pregpriv = &padapter->registrypriv;
 100
 101         memset(pfwpriv, 0, sizeof(struct fw_priv));
 102         /* todo: check if needs endian conversion */
 103         pfwpriv->hci_sel =  RTL8712_HCI_TYPE_72USB;
 104         pfwpriv->usb_ep_num = (u8)pdvobj->nr_endpoint;
 105         pfwpriv->bw_40MHz_en = pregpriv->cbw40_enable;
 106         switch (pregpriv->rf_config) {
 107         case RTL8712_RF_1T1R:
 108                 pfwpriv->rf_config = RTL8712_RFC_1T1R;
 109                 break;
 110         case RTL8712_RF_2T2R:
 111                 pfwpriv->rf_config = RTL8712_RFC_2T2R;
 112                 break;
 113         case RTL8712_RF_1T2R:
 114         default:
 115                 pfwpriv->rf_config = RTL8712_RFC_1T2R;
 116         }
 117         pfwpriv->mp_mode = (pregpriv->mp_mode == 1) ? 1 : 0;
 118         pfwpriv->vcsType = pregpriv->vrtl_carrier_sense; /* 0:off 1:on 2:auto */
 119         pfwpriv->vcsMode = pregpriv->vcs_type; /* 1:RTS/CTS 2:CTS to self */
 120         /* default enable turboMode */
 121         pfwpriv->turboMode = ((pregpriv->wifi_test == 1) ? 0 : 1);
 122         pfwpriv->lowPowerMode = pregpriv->low_power;
 123 }
 124
 125 static void update_fwhdr(struct fw_hdr  *pfwhdr, const u8 *pmappedfw)
 126 {
 127         pfwhdr->signature = le16_to_cpu(*(u16 *)pmappedfw);
 128         pfwhdr->version = le16_to_cpu(*(u16 *)(pmappedfw+2));
 129         /* define the size of boot loader */
 130         pfwhdr->dmem_size = le32_to_cpu(*(uint *)(pmappedfw+4));
 131         /* define the size of FW in IMEM */
 132         pfwhdr->img_IMEM_size = le32_to_cpu(*(uint *)(pmappedfw+8));
 133         /* define the size of FW in SRAM */
 134         pfwhdr->img_SRAM_size = le32_to_cpu(*(uint *)(pmappedfw+12));
 135         /* define the size of DMEM variable */
 136         pfwhdr->fw_priv_sz = le32_to_cpu(*(uint *)(pmappedfw+16));
 137 }
 138
 139 static u8 chk_fwhdr(struct fw_hdr *pfwhdr, u32 ulfilelength)
 140 {
 141         u32     fwhdrsz, fw_sz;
 142         u8 intf, rfconf;
 143
 144         /* check signature */
 145         if ((pfwhdr->signature != 0x8712) && (pfwhdr->signature != 0x8192))
 146                 return _FAIL;
 147         /* check interface */
 148         intf = (u8)((pfwhdr->version&0x3000) >> 12);
 149         /* check rf_conf */
 150         rfconf = (u8)((pfwhdr->version&0xC000) >> 14);
 151         /* check fw_priv_sze & sizeof(struct fw_priv) */
 152         if (pfwhdr->fw_priv_sz != sizeof(struct fw_priv))
 153                 return _FAIL;
 154         /* check fw_sz & image_fw_sz */
 155         fwhdrsz = FIELD_OFFSET(struct fw_hdr, fwpriv) + pfwhdr->fw_priv_sz;
 156         fw_sz =  fwhdrsz + pfwhdr->img_IMEM_size + pfwhdr->img_SRAM_size +
 157                  pfwhdr->dmem_size;
 158         if (fw_sz != ulfilelength)
 159                 return _FAIL;
 160         return _SUCCESS;
 161 }
 162
 163 static u8 rtl8712_dl_fw(struct _adapter *padapter)
 164 {
 165         sint i;
 166         u8 tmp8, tmp8_a;
 167         u16 tmp16;
 168         u32 maxlen = 0, tmp32; /* for compare usage */
 169         uint dump_imem_sz, imem_sz, dump_emem_sz, emem_sz; /* max = 49152; */
 170         struct fw_hdr fwhdr;
 171         u32 ulfilelength;       /* FW file size */
 172         const u8 *pmappedfw = NULL;
 173         u8 *ptmpchar = NULL, *ppayload, *ptr;
 174         struct tx_desc *ptx_desc;
 175         u32 txdscp_sz = sizeof(struct tx_desc);
 176         u8 ret = _FAIL;
 177
 178         ulfilelength = rtl871x_open_fw(padapter, &pmappedfw);
 179         if (pmappedfw && (ulfilelength > 0)) {
 180                 update_fwhdr(&fwhdr, pmappedfw);
 181                 if (chk_fwhdr(&fwhdr, ulfilelength) == _FAIL)
 182                         return ret;
 183                 fill_fwpriv(padapter, &fwhdr.fwpriv);
 184                 /* firmware check ok */
 185                 maxlen = (fwhdr.img_IMEM_size > fwhdr.img_SRAM_size) ?
 186                           fwhdr.img_IMEM_size : fwhdr.img_SRAM_size;
 187                 maxlen += txdscp_sz;
 188                 ptmpchar = _malloc(maxlen + FWBUFF_ALIGN_SZ);
 189                 if (ptmpchar == NULL)
 190                         return ret;
 191
 192                 ptx_desc = (struct tx_desc *)(ptmpchar + FWBUFF_ALIGN_SZ -
 193                             ((addr_t)(ptmpchar) & (FWBUFF_ALIGN_SZ - 1)));
 194                 ppayload = (u8 *)(ptx_desc) + txdscp_sz;
 195                 ptr = (u8 *)pmappedfw + FIELD_OFFSET(struct fw_hdr, fwpriv) +
 196                       fwhdr.fw_priv_sz;
 197                 /* Download FirmWare */
 198                 /* 1. determine IMEM code size and Load IMEM Code Section */
 199                 imem_sz = fwhdr.img_IMEM_size;
 200                 do {
 201                         memset(ptx_desc, 0, TXDESC_SIZE);
 202                         if (imem_sz >  MAX_DUMP_FWSZ/*49152*/)
 203                                 dump_imem_sz = MAX_DUMP_FWSZ;
 204                         else {
 205                                 dump_imem_sz = imem_sz;
 206                                 ptx_desc->txdw0 |= cpu_to_le32(BIT(28));
 207                         }
 208                         ptx_desc->txdw0 |= cpu_to_le32(dump_imem_sz &
 209                                                        0x0000ffff);
 210                         memcpy(ppayload, ptr, dump_imem_sz);
 211                         r8712_write_mem(padapter, RTL8712_DMA_VOQ,
 212                                   dump_imem_sz + TXDESC_SIZE,
 213                                   (u8 *)ptx_desc);
 214                         ptr += dump_imem_sz;
 215                         imem_sz -= dump_imem_sz;
 216                 } while (imem_sz > 0);
 217                 i = 10;
 218                 tmp16 = r8712_read16(padapter, TCR);
 219                 while (((tmp16 & _IMEM_CODE_DONE) == 0) && (i > 0)) {
 220                         udelay(10);
 221                         tmp16 = r8712_read16(padapter, TCR);
 222                         i--;
 223                 }
 224                 if (i == 0 || (tmp16 & _IMEM_CHK_RPT) == 0)
 225                         goto exit_fail;
 226
 227                 /* 2.Download EMEM code size and Load EMEM Code Section */
 228                 emem_sz = fwhdr.img_SRAM_size;
 229                 do {
 230                         memset(ptx_desc, 0, TXDESC_SIZE);
 231                         if (emem_sz >  MAX_DUMP_FWSZ) /* max=48k */
 232                                 dump_emem_sz = MAX_DUMP_FWSZ;
 233                         else {
 234                                 dump_emem_sz = emem_sz;
 235                                 ptx_desc->txdw0 |= cpu_to_le32(BIT(28));
 236                         }
 237                         ptx_desc->txdw0 |= cpu_to_le32(dump_emem_sz &
 238                                                        0x0000ffff);
 239                         memcpy(ppayload, ptr, dump_emem_sz);
 240                         r8712_write_mem(padapter, RTL8712_DMA_VOQ,
 241                                   dump_emem_sz+TXDESC_SIZE, (u8 *)ptx_desc);
 242                         ptr += dump_emem_sz;
 243                         emem_sz -= dump_emem_sz;
 244                 } while (emem_sz > 0);
 245                 i = 5;
 246                 tmp16 = r8712_read16(padapter, TCR);
 247                 while (((tmp16 & _EMEM_CODE_DONE) == 0) && (i > 0)) {
 248                         udelay(10);
 249                         tmp16 = r8712_read16(padapter, TCR);
 250                         i--;
 251                 }
 252                 if (i == 0 || (tmp16 & _EMEM_CHK_RPT) == 0)
 253                         goto exit_fail;
 254
 255                 /* 3.Enable CPU */
 256                 tmp8 = r8712_read8(padapter, SYS_CLKR);
 257                 r8712_write8(padapter, SYS_CLKR, tmp8|BIT(2));
 258                 tmp8_a = r8712_read8(padapter, SYS_CLKR);
 259                 if (tmp8_a != (tmp8|BIT(2)))
 260                         goto exit_fail;
 261
 262                 tmp8 = r8712_read8(padapter, SYS_FUNC_EN + 1);
 263                 r8712_write8(padapter, SYS_FUNC_EN+1, tmp8|BIT(2));
 264                 tmp8_a = r8712_read8(padapter, SYS_FUNC_EN + 1);
 265                 if (tmp8_a != (tmp8|BIT(2)))
 266                         goto exit_fail;
 267
 268                 tmp32 = r8712_read32(padapter, TCR);
 269
 270                 /* 4.polling IMEM Ready */
 271                 i = 100;
 272                 tmp16 = r8712_read16(padapter, TCR);
 273                 while (((tmp16 & _IMEM_RDY) == 0) && (i > 0)) {
 274                         msleep(20);
 275                         tmp16 = r8712_read16(padapter, TCR);
 276                         i--;
 277                 }
 278                 if (i == 0) {
 279                         r8712_write16(padapter, 0x10250348, 0xc000);
 280                         r8712_write16(padapter, 0x10250348, 0xc001);
 281                         r8712_write16(padapter, 0x10250348, 0x2000);
 282                         r8712_write16(padapter, 0x10250348, 0x2001);
 283                         r8712_write16(padapter, 0x10250348, 0x2002);
 284                         r8712_write16(padapter, 0x10250348, 0x2003);
 285                         goto exit_fail;
 286                 }
 287                 /* 5.Download DMEM code size and Load EMEM Code Section */
 288                 memset(ptx_desc, 0, TXDESC_SIZE);
 289                 ptx_desc->txdw0 |= cpu_to_le32(fwhdr.fw_priv_sz&0x0000ffff);
 290                 ptx_desc->txdw0 |= cpu_to_le32(BIT(28));
 291                 memcpy(ppayload, &fwhdr.fwpriv, fwhdr.fw_priv_sz);
 292                 r8712_write_mem(padapter, RTL8712_DMA_VOQ,
 293                           fwhdr.fw_priv_sz + TXDESC_SIZE, (u8 *)ptx_desc);
 294
 295                 /* polling dmem code done */
 296                 i = 100;
 297                 tmp16 = r8712_read16(padapter, TCR);
 298                 while (((tmp16 & _DMEM_CODE_DONE) == 0) && (i > 0)) {
 299                         msleep(20);
 300                         tmp16 = r8712_read16(padapter, TCR);
 301                         i--;
 302                 }
 303                 if (i == 0)
 304                         goto exit_fail;
 305
 306                 tmp8 = r8712_read8(padapter, 0x1025000A);
 307                 if (tmp8 & BIT(4)) /* When boot from EEPROM,
 308                                     & FW need more time to read EEPROM */
 309                         i = 60;
 310                 else                    /* boot from EFUSE */
 311                         i = 30;
 312                 tmp16 = r8712_read16(padapter, TCR);
 313                 while (((tmp16 & _FWRDY) == 0) && (i > 0)) {
 314                         msleep(100);
 315                         tmp16 = r8712_read16(padapter, TCR);
 316                         i--;
 317                 }
 318                 if (i == 0)
 319                         goto exit_fail;
 320         } else
 321                 goto exit_fail;
 322         ret = _SUCCESS;
 323
 324 exit_fail:
 325         kfree(ptmpchar);
 326         return ret;
 327 }
 328
 329 uint rtl8712_hal_init(struct _adapter *padapter)
 330 {
 331         u32 val32;
 332         int i;
 333
 334         /* r8712 firmware download */
 335         if (rtl8712_dl_fw(padapter) != _SUCCESS)
 336                 return _FAIL;
 337
 338         printk(KERN_INFO "r8712u: 1 RCR=0x%x\n",  r8712_read32(padapter, RCR));
 339         val32 = r8712_read32(padapter, RCR);
 340         r8712_write32(padapter, RCR, (val32 | BIT(26))); /* Enable RX TCP
 341                                                             Checksum offload */
 342         printk(KERN_INFO "r8712u: 2 RCR=0x%x\n", r8712_read32(padapter, RCR));
 343         val32 = r8712_read32(padapter, RCR);
 344         r8712_write32(padapter, RCR, (val32|BIT(25))); /* Append PHY status */
 345         val32 = 0;
 346         val32 = r8712_read32(padapter, 0x10250040);
 347         r8712_write32(padapter,  0x10250040, (val32&0x00FFFFFF));
 348         /* for usb rx aggregation */
 349         r8712_write8(padapter, 0x102500B5, r8712_read8(padapter, 0x102500B5) |
 350                BIT(0)); /* page = 128bytes */
 351         r8712_write8(padapter, 0x102500BD, r8712_read8(padapter, 0x102500BD) |
 352                BIT(7)); /* enable usb rx aggregation */
 353         r8712_write8(padapter, 0x102500D9, 1); /* TH=1 => means that invalidate
 354                                                 *  usb rx aggregation */
 355         r8712_write8(padapter, 0x1025FE5B, 0x04); /* 1.7ms/4 */
 356         /* Fix the RX FIFO issue(USB error) */
 357         r8712_write8(padapter, 0x1025fe5C, r8712_read8(padapter, 0x1025fe5C)
 358                      | BIT(7));
 359         for (i = 0; i < 6; i++)
 360                 padapter->eeprompriv.mac_addr[i] = r8712_read8(padapter,
 361                                                                MACID + i);
 362         return _SUCCESS;
 363 }
 364
 365 uint rtl8712_hal_deinit(struct _adapter *padapter)
 366 {
 367         r8712_write8(padapter, RF_CTRL, 0x00);
 368         /* Turn off BB */
 369         msleep(20);
 370         /* Turn off MAC */
 371         r8712_write8(padapter, SYS_CLKR+1, 0x38); /* Switch Control Path */
 372         r8712_write8(padapter, SYS_FUNC_EN+1, 0x70);
 373         r8712_write8(padapter, PMC_FSM, 0x06);  /* Enable Loader Data Keep */
 374         r8712_write8(padapter, SYS_ISO_CTRL, 0xF9); /* Isolation signals from
 375                                                      * CORE, PLL */
 376         r8712_write8(padapter, SYS_ISO_CTRL+1, 0xe8); /* Enable EFUSE 1.2V */
 377         r8712_write8(padapter, AFE_PLL_CTRL, 0x00); /* Disable AFE PLL. */
 378         r8712_write8(padapter, LDOA15_CTRL, 0x54);  /* Disable A15V */
 379         r8712_write8(padapter, SYS_FUNC_EN+1, 0x50); /* Disable E-Fuse 1.2V */
 380         r8712_write8(padapter, LDOV12D_CTRL, 0x24); /* Disable LDO12(for CE) */
 381         r8712_write8(padapter, AFE_MISC, 0x30); /* Disable AFE BG&MB */
 382         /* Option for Disable 1.6V LDO. */
 383         r8712_write8(padapter, SPS0_CTRL, 0x56); /* Disable 1.6V LDO */
 384         r8712_write8(padapter, SPS0_CTRL+1, 0x43);  /* Set SW PFM */
 385         return _SUCCESS;
 386 }
 387
 388 uint rtl871x_hal_init(struct _adapter *padapter)
 389 {
 390         padapter->hw_init_completed = false;
 391         if (padapter->halpriv.hal_bus_init == NULL)
 392                 return _FAIL;
 393         else {
 394                 if (padapter->halpriv.hal_bus_init(padapter) != _SUCCESS)
 395                         return _FAIL;
 396         }
 397         if (rtl8712_hal_init(padapter) == _SUCCESS)
 398                 padapter->hw_init_completed = true;
 399         else {
 400                 padapter->hw_init_completed = false;
 401                 return _FAIL;
 402         }
 403         return _SUCCESS;
 404 }