Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /******************************************************************** |
| 2 | Filename: via-ircc.c |
| 3 | Version: 1.0 |
| 4 | Description: Driver for the VIA VT8231/VT8233 IrDA chipsets |
| 5 | Author: VIA Technologies,inc |
| 6 | Date : 08/06/2003 |
| 7 | |
| 8 | Copyright (c) 1998-2003 VIA Technologies, Inc. |
| 9 | |
| 10 | This program is free software; you can redistribute it and/or modify it under |
| 11 | the terms of the GNU General Public License as published by the Free Software |
| 12 | Foundation; either version 2, or (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, but WITHOUT |
| 15 | ANY WARRANTIES OR REPRESENTATIONS; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 17 | See the GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License along with |
| 20 | this program; if not, write to the Free Software Foundation, Inc., |
| 21 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 22 | |
| 23 | F01 Oct/02/02: Modify code for V0.11(move out back to back transfer) |
| 24 | F02 Oct/28/02: Add SB device ID for 3147 and 3177. |
| 25 | Comment : |
| 26 | jul/09/2002 : only implement two kind of dongle currently. |
| 27 | Oct/02/2002 : work on VT8231 and VT8233 . |
| 28 | Aug/06/2003 : change driver format to pci driver . |
| 29 | |
| 30 | 2004-02-16: <sda@bdit.de> |
| 31 | - Removed unneeded 'legacy' pci stuff. |
| 32 | - Make sure SIR mode is set (hw_init()) before calling mode-dependant stuff. |
| 33 | - On speed change from core, don't send SIR frame with new speed. |
| 34 | Use current speed and change speeds later. |
| 35 | - Make module-param dongle_id actually work. |
| 36 | - New dongle_id 17 (0x11): TDFS4500. Single-ended SIR only. |
| 37 | Tested with home-grown PCB on EPIA boards. |
| 38 | - Code cleanup. |
| 39 | |
| 40 | ********************************************************************/ |
| 41 | #include <linux/module.h> |
| 42 | #include <linux/kernel.h> |
| 43 | #include <linux/types.h> |
| 44 | #include <linux/skbuff.h> |
| 45 | #include <linux/netdevice.h> |
| 46 | #include <linux/ioport.h> |
| 47 | #include <linux/delay.h> |
| 48 | #include <linux/slab.h> |
| 49 | #include <linux/init.h> |
| 50 | #include <linux/rtnetlink.h> |
| 51 | #include <linux/pci.h> |
| 52 | #include <linux/dma-mapping.h> |
| 53 | |
| 54 | #include <asm/io.h> |
| 55 | #include <asm/dma.h> |
| 56 | #include <asm/byteorder.h> |
| 57 | |
| 58 | #include <linux/pm.h> |
| 59 | |
| 60 | #include <net/irda/wrapper.h> |
| 61 | #include <net/irda/irda.h> |
| 62 | #include <net/irda/irda_device.h> |
| 63 | |
| 64 | #include "via-ircc.h" |
| 65 | |
| 66 | #define VIA_MODULE_NAME "via-ircc" |
| 67 | #define CHIP_IO_EXTENT 0x40 |
| 68 | |
| 69 | static char *driver_name = VIA_MODULE_NAME; |
| 70 | |
| 71 | /* Module parameters */ |
| 72 | static int qos_mtt_bits = 0x07; /* 1 ms or more */ |
| 73 | static int dongle_id = 0; /* default: probe */ |
| 74 | |
| 75 | /* We can't guess the type of connected dongle, user *must* supply it. */ |
| 76 | module_param(dongle_id, int, 0); |
| 77 | |
| 78 | /* FIXME : we should not need this, because instances should be automatically |
| 79 | * managed by the PCI layer. Especially that we seem to only be using the |
| 80 | * first entry. Jean II */ |
| 81 | /* Max 4 instances for now */ |
| 82 | static struct via_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL }; |
| 83 | |
| 84 | /* Some prototypes */ |
| 85 | static int via_ircc_open(int i, chipio_t * info, unsigned int id); |
| 86 | static int via_ircc_close(struct via_ircc_cb *self); |
| 87 | static int via_ircc_dma_receive(struct via_ircc_cb *self); |
| 88 | static int via_ircc_dma_receive_complete(struct via_ircc_cb *self, |
| 89 | int iobase); |
| 90 | static int via_ircc_hard_xmit_sir(struct sk_buff *skb, |
| 91 | struct net_device *dev); |
| 92 | static int via_ircc_hard_xmit_fir(struct sk_buff *skb, |
| 93 | struct net_device *dev); |
| 94 | static void via_hw_init(struct via_ircc_cb *self); |
| 95 | static void via_ircc_change_speed(struct via_ircc_cb *self, __u32 baud); |
| 96 | static irqreturn_t via_ircc_interrupt(int irq, void *dev_id, |
| 97 | struct pt_regs *regs); |
| 98 | static int via_ircc_is_receiving(struct via_ircc_cb *self); |
| 99 | static int via_ircc_read_dongle_id(int iobase); |
| 100 | |
| 101 | static int via_ircc_net_open(struct net_device *dev); |
| 102 | static int via_ircc_net_close(struct net_device *dev); |
| 103 | static int via_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, |
| 104 | int cmd); |
| 105 | static struct net_device_stats *via_ircc_net_get_stats(struct net_device |
| 106 | *dev); |
| 107 | static void via_ircc_change_dongle_speed(int iobase, int speed, |
| 108 | int dongle_id); |
| 109 | static int RxTimerHandler(struct via_ircc_cb *self, int iobase); |
| 110 | static void hwreset(struct via_ircc_cb *self); |
| 111 | static int via_ircc_dma_xmit(struct via_ircc_cb *self, u16 iobase); |
| 112 | static int upload_rxdata(struct via_ircc_cb *self, int iobase); |
| 113 | static int __devinit via_init_one (struct pci_dev *pcidev, const struct pci_device_id *id); |
| 114 | static void __devexit via_remove_one (struct pci_dev *pdev); |
| 115 | |
| 116 | /* FIXME : Should use udelay() instead, even if we are x86 only - Jean II */ |
| 117 | static void iodelay(int udelay) |
| 118 | { |
| 119 | u8 data; |
| 120 | int i; |
| 121 | |
| 122 | for (i = 0; i < udelay; i++) { |
| 123 | data = inb(0x80); |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | static struct pci_device_id via_pci_tbl[] = { |
| 128 | { PCI_VENDOR_ID_VIA, 0x8231, PCI_ANY_ID, PCI_ANY_ID,0,0,0 }, |
| 129 | { PCI_VENDOR_ID_VIA, 0x3109, PCI_ANY_ID, PCI_ANY_ID,0,0,1 }, |
| 130 | { PCI_VENDOR_ID_VIA, 0x3074, PCI_ANY_ID, PCI_ANY_ID,0,0,2 }, |
| 131 | { PCI_VENDOR_ID_VIA, 0x3147, PCI_ANY_ID, PCI_ANY_ID,0,0,3 }, |
| 132 | { PCI_VENDOR_ID_VIA, 0x3177, PCI_ANY_ID, PCI_ANY_ID,0,0,4 }, |
| 133 | { 0, } |
| 134 | }; |
| 135 | |
| 136 | MODULE_DEVICE_TABLE(pci,via_pci_tbl); |
| 137 | |
| 138 | |
| 139 | static struct pci_driver via_driver = { |
| 140 | .name = VIA_MODULE_NAME, |
| 141 | .id_table = via_pci_tbl, |
| 142 | .probe = via_init_one, |
| 143 | .remove = __devexit_p(via_remove_one), |
| 144 | }; |
| 145 | |
| 146 | |
| 147 | /* |
| 148 | * Function via_ircc_init () |
| 149 | * |
| 150 | * Initialize chip. Just find out chip type and resource. |
| 151 | */ |
| 152 | static int __init via_ircc_init(void) |
| 153 | { |
| 154 | int rc; |
| 155 | |
| 156 | IRDA_DEBUG(3, "%s()\n", __FUNCTION__); |
| 157 | |
| 158 | rc = pci_register_driver(&via_driver); |
| 159 | if (rc < 0) { |
| 160 | IRDA_DEBUG(0, "%s(): error rc = %d, returning -ENODEV...\n", |
| 161 | __FUNCTION__, rc); |
| 162 | return -ENODEV; |
| 163 | } |
| 164 | return 0; |
| 165 | } |
| 166 | |
| 167 | static int __devinit via_init_one (struct pci_dev *pcidev, const struct pci_device_id *id) |
| 168 | { |
| 169 | int rc; |
| 170 | u8 temp,oldPCI_40,oldPCI_44,bTmp,bTmp1; |
| 171 | u16 Chipset,FirDRQ1,FirDRQ0,FirIRQ,FirIOBase; |
| 172 | chipio_t info; |
| 173 | |
| 174 | IRDA_DEBUG(2, "%s(): Device ID=(0X%X)\n", __FUNCTION__, id->device); |
| 175 | |
| 176 | rc = pci_enable_device (pcidev); |
| 177 | if (rc) { |
| 178 | IRDA_DEBUG(0, "%s(): error rc = %d\n", __FUNCTION__, rc); |
| 179 | return -ENODEV; |
| 180 | } |
| 181 | |
| 182 | // South Bridge exist |
| 183 | if ( ReadLPCReg(0x20) != 0x3C ) |
| 184 | Chipset=0x3096; |
| 185 | else |
| 186 | Chipset=0x3076; |
| 187 | |
| 188 | if (Chipset==0x3076) { |
| 189 | IRDA_DEBUG(2, "%s(): Chipset = 3076\n", __FUNCTION__); |
| 190 | |
| 191 | WriteLPCReg(7,0x0c ); |
| 192 | temp=ReadLPCReg(0x30);//check if BIOS Enable Fir |
| 193 | if((temp&0x01)==1) { // BIOS close or no FIR |
| 194 | WriteLPCReg(0x1d, 0x82 ); |
| 195 | WriteLPCReg(0x23,0x18); |
| 196 | temp=ReadLPCReg(0xF0); |
| 197 | if((temp&0x01)==0) { |
| 198 | temp=(ReadLPCReg(0x74)&0x03); //DMA |
| 199 | FirDRQ0=temp + 4; |
| 200 | temp=(ReadLPCReg(0x74)&0x0C) >> 2; |
| 201 | FirDRQ1=temp + 4; |
| 202 | } else { |
| 203 | temp=(ReadLPCReg(0x74)&0x0C) >> 2; //DMA |
| 204 | FirDRQ0=temp + 4; |
| 205 | FirDRQ1=FirDRQ0; |
| 206 | } |
| 207 | FirIRQ=(ReadLPCReg(0x70)&0x0f); //IRQ |
| 208 | FirIOBase=ReadLPCReg(0x60 ) << 8; //IO Space :high byte |
| 209 | FirIOBase=FirIOBase| ReadLPCReg(0x61) ; //low byte |
| 210 | FirIOBase=FirIOBase ; |
| 211 | info.fir_base=FirIOBase; |
| 212 | info.irq=FirIRQ; |
| 213 | info.dma=FirDRQ1; |
| 214 | info.dma2=FirDRQ0; |
| 215 | pci_read_config_byte(pcidev,0x40,&bTmp); |
| 216 | pci_write_config_byte(pcidev,0x40,((bTmp | 0x08) & 0xfe)); |
| 217 | pci_read_config_byte(pcidev,0x42,&bTmp); |
| 218 | pci_write_config_byte(pcidev,0x42,(bTmp | 0xf0)); |
| 219 | pci_write_config_byte(pcidev,0x5a,0xc0); |
| 220 | WriteLPCReg(0x28, 0x70 ); |
| 221 | if (via_ircc_open(0, &info,0x3076) == 0) |
| 222 | rc=0; |
| 223 | } else |
| 224 | rc = -ENODEV; //IR not turn on |
| 225 | } else { //Not VT1211 |
| 226 | IRDA_DEBUG(2, "%s(): Chipset = 3096\n", __FUNCTION__); |
| 227 | |
| 228 | pci_read_config_byte(pcidev,0x67,&bTmp);//check if BIOS Enable Fir |
| 229 | if((bTmp&0x01)==1) { // BIOS enable FIR |
| 230 | //Enable Double DMA clock |
| 231 | pci_read_config_byte(pcidev,0x42,&oldPCI_40); |
| 232 | pci_write_config_byte(pcidev,0x42,oldPCI_40 | 0x80); |
| 233 | pci_read_config_byte(pcidev,0x40,&oldPCI_40); |
| 234 | pci_write_config_byte(pcidev,0x40,oldPCI_40 & 0xf7); |
| 235 | pci_read_config_byte(pcidev,0x44,&oldPCI_44); |
| 236 | pci_write_config_byte(pcidev,0x44,0x4e); |
| 237 | //---------- read configuration from Function0 of south bridge |
| 238 | if((bTmp&0x02)==0) { |
| 239 | pci_read_config_byte(pcidev,0x44,&bTmp1); //DMA |
| 240 | FirDRQ0 = (bTmp1 & 0x30) >> 4; |
| 241 | pci_read_config_byte(pcidev,0x44,&bTmp1); |
| 242 | FirDRQ1 = (bTmp1 & 0xc0) >> 6; |
| 243 | } else { |
| 244 | pci_read_config_byte(pcidev,0x44,&bTmp1); //DMA |
| 245 | FirDRQ0 = (bTmp1 & 0x30) >> 4 ; |
| 246 | FirDRQ1=0; |
| 247 | } |
| 248 | pci_read_config_byte(pcidev,0x47,&bTmp1); //IRQ |
| 249 | FirIRQ = bTmp1 & 0x0f; |
| 250 | |
| 251 | pci_read_config_byte(pcidev,0x69,&bTmp); |
| 252 | FirIOBase = bTmp << 8;//hight byte |
| 253 | pci_read_config_byte(pcidev,0x68,&bTmp); |
| 254 | FirIOBase = (FirIOBase | bTmp ) & 0xfff0; |
| 255 | //------------------------- |
| 256 | info.fir_base=FirIOBase; |
| 257 | info.irq=FirIRQ; |
| 258 | info.dma=FirDRQ1; |
| 259 | info.dma2=FirDRQ0; |
| 260 | if (via_ircc_open(0, &info,0x3096) == 0) |
| 261 | rc=0; |
| 262 | } else |
| 263 | rc = -ENODEV; //IR not turn on !!!!! |
| 264 | }//Not VT1211 |
| 265 | |
| 266 | IRDA_DEBUG(2, "%s(): End - rc = %d\n", __FUNCTION__, rc); |
| 267 | return rc; |
| 268 | } |
| 269 | |
| 270 | /* |
| 271 | * Function via_ircc_clean () |
| 272 | * |
| 273 | * Close all configured chips |
| 274 | * |
| 275 | */ |
| 276 | static void via_ircc_clean(void) |
| 277 | { |
| 278 | int i; |
| 279 | |
| 280 | IRDA_DEBUG(3, "%s()\n", __FUNCTION__); |
| 281 | |
Bjorn Helgaas | 9c3bd68 | 2006-08-15 00:05:38 -0700 | [diff] [blame^] | 282 | for (i=0; i < ARRAY_SIZE(dev_self); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | if (dev_self[i]) |
| 284 | via_ircc_close(dev_self[i]); |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | static void __devexit via_remove_one (struct pci_dev *pdev) |
| 289 | { |
| 290 | IRDA_DEBUG(3, "%s()\n", __FUNCTION__); |
| 291 | |
| 292 | /* FIXME : This is ugly. We should use pci_get_drvdata(pdev); |
| 293 | * to get our driver instance and call directly via_ircc_close(). |
| 294 | * See vlsi_ir for details... |
| 295 | * Jean II */ |
| 296 | via_ircc_clean(); |
| 297 | |
| 298 | /* FIXME : This should be in via_ircc_close(), because here we may |
| 299 | * theoritically disable still configured devices :-( - Jean II */ |
| 300 | pci_disable_device(pdev); |
| 301 | } |
| 302 | |
| 303 | static void __exit via_ircc_cleanup(void) |
| 304 | { |
| 305 | IRDA_DEBUG(3, "%s()\n", __FUNCTION__); |
| 306 | |
| 307 | /* FIXME : This should be redundant, as pci_unregister_driver() |
| 308 | * should call via_remove_one() on each device. |
| 309 | * Jean II */ |
| 310 | via_ircc_clean(); |
| 311 | |
| 312 | /* Cleanup all instances of the driver */ |
| 313 | pci_unregister_driver (&via_driver); |
| 314 | } |
| 315 | |
| 316 | /* |
| 317 | * Function via_ircc_open (iobase, irq) |
| 318 | * |
| 319 | * Open driver instance |
| 320 | * |
| 321 | */ |
| 322 | static __devinit int via_ircc_open(int i, chipio_t * info, unsigned int id) |
| 323 | { |
| 324 | struct net_device *dev; |
| 325 | struct via_ircc_cb *self; |
| 326 | int err; |
| 327 | |
| 328 | IRDA_DEBUG(3, "%s()\n", __FUNCTION__); |
| 329 | |
Bjorn Helgaas | 9c3bd68 | 2006-08-15 00:05:38 -0700 | [diff] [blame^] | 330 | if (i >= ARRAY_SIZE(dev_self)) |
| 331 | return -ENOMEM; |
| 332 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | /* Allocate new instance of the driver */ |
| 334 | dev = alloc_irdadev(sizeof(struct via_ircc_cb)); |
| 335 | if (dev == NULL) |
| 336 | return -ENOMEM; |
| 337 | |
| 338 | self = dev->priv; |
| 339 | self->netdev = dev; |
| 340 | spin_lock_init(&self->lock); |
| 341 | |
| 342 | /* FIXME : We should store our driver instance in the PCI layer, |
| 343 | * using pci_set_drvdata(), not in this array. |
| 344 | * See vlsi_ir for details... - Jean II */ |
| 345 | /* FIXME : 'i' is always 0 (see via_init_one()) :-( - Jean II */ |
| 346 | /* Need to store self somewhere */ |
| 347 | dev_self[i] = self; |
| 348 | self->index = i; |
| 349 | /* Initialize Resource */ |
| 350 | self->io.cfg_base = info->cfg_base; |
| 351 | self->io.fir_base = info->fir_base; |
| 352 | self->io.irq = info->irq; |
| 353 | self->io.fir_ext = CHIP_IO_EXTENT; |
| 354 | self->io.dma = info->dma; |
| 355 | self->io.dma2 = info->dma2; |
| 356 | self->io.fifo_size = 32; |
| 357 | self->chip_id = id; |
| 358 | self->st_fifo.len = 0; |
| 359 | self->RxDataReady = 0; |
| 360 | |
| 361 | /* Reserve the ioports that we need */ |
| 362 | if (!request_region(self->io.fir_base, self->io.fir_ext, driver_name)) { |
| 363 | IRDA_DEBUG(0, "%s(), can't get iobase of 0x%03x\n", |
| 364 | __FUNCTION__, self->io.fir_base); |
| 365 | err = -ENODEV; |
| 366 | goto err_out1; |
| 367 | } |
| 368 | |
| 369 | /* Initialize QoS for this device */ |
| 370 | irda_init_max_qos_capabilies(&self->qos); |
| 371 | |
| 372 | /* Check if user has supplied the dongle id or not */ |
| 373 | if (!dongle_id) |
| 374 | dongle_id = via_ircc_read_dongle_id(self->io.fir_base); |
| 375 | self->io.dongle_id = dongle_id; |
| 376 | |
| 377 | /* The only value we must override it the baudrate */ |
| 378 | /* Maximum speeds and capabilities are dongle-dependant. */ |
| 379 | switch( self->io.dongle_id ){ |
| 380 | case 0x0d: |
| 381 | self->qos.baud_rate.bits = |
| 382 | IR_9600 | IR_19200 | IR_38400 | IR_57600 | IR_115200 | |
| 383 | IR_576000 | IR_1152000 | (IR_4000000 << 8); |
| 384 | break; |
| 385 | default: |
| 386 | self->qos.baud_rate.bits = |
| 387 | IR_9600 | IR_19200 | IR_38400 | IR_57600 | IR_115200; |
| 388 | break; |
| 389 | } |
| 390 | |
| 391 | /* Following was used for testing: |
| 392 | * |
| 393 | * self->qos.baud_rate.bits = IR_9600; |
| 394 | * |
| 395 | * Is is no good, as it prohibits (error-prone) speed-changes. |
| 396 | */ |
| 397 | |
| 398 | self->qos.min_turn_time.bits = qos_mtt_bits; |
| 399 | irda_qos_bits_to_value(&self->qos); |
| 400 | |
| 401 | /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */ |
| 402 | self->rx_buff.truesize = 14384 + 2048; |
| 403 | self->tx_buff.truesize = 14384 + 2048; |
| 404 | |
| 405 | /* Allocate memory if needed */ |
| 406 | self->rx_buff.head = |
| 407 | dma_alloc_coherent(NULL, self->rx_buff.truesize, |
| 408 | &self->rx_buff_dma, GFP_KERNEL); |
| 409 | if (self->rx_buff.head == NULL) { |
| 410 | err = -ENOMEM; |
| 411 | goto err_out2; |
| 412 | } |
| 413 | memset(self->rx_buff.head, 0, self->rx_buff.truesize); |
| 414 | |
| 415 | self->tx_buff.head = |
| 416 | dma_alloc_coherent(NULL, self->tx_buff.truesize, |
| 417 | &self->tx_buff_dma, GFP_KERNEL); |
| 418 | if (self->tx_buff.head == NULL) { |
| 419 | err = -ENOMEM; |
| 420 | goto err_out3; |
| 421 | } |
| 422 | memset(self->tx_buff.head, 0, self->tx_buff.truesize); |
| 423 | |
| 424 | self->rx_buff.in_frame = FALSE; |
| 425 | self->rx_buff.state = OUTSIDE_FRAME; |
| 426 | self->tx_buff.data = self->tx_buff.head; |
| 427 | self->rx_buff.data = self->rx_buff.head; |
| 428 | |
| 429 | /* Reset Tx queue info */ |
| 430 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; |
| 431 | self->tx_fifo.tail = self->tx_buff.head; |
| 432 | |
| 433 | /* Keep track of module usage */ |
| 434 | SET_MODULE_OWNER(dev); |
| 435 | |
| 436 | /* Override the network functions we need to use */ |
| 437 | dev->hard_start_xmit = via_ircc_hard_xmit_sir; |
| 438 | dev->open = via_ircc_net_open; |
| 439 | dev->stop = via_ircc_net_close; |
| 440 | dev->do_ioctl = via_ircc_net_ioctl; |
| 441 | dev->get_stats = via_ircc_net_get_stats; |
| 442 | |
| 443 | err = register_netdev(dev); |
| 444 | if (err) |
| 445 | goto err_out4; |
| 446 | |
| 447 | IRDA_MESSAGE("IrDA: Registered device %s (via-ircc)\n", dev->name); |
| 448 | |
| 449 | /* Initialise the hardware.. |
| 450 | */ |
| 451 | self->io.speed = 9600; |
| 452 | via_hw_init(self); |
| 453 | return 0; |
| 454 | err_out4: |
| 455 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 456 | self->tx_buff.head, self->tx_buff_dma); |
| 457 | err_out3: |
| 458 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 459 | self->rx_buff.head, self->rx_buff_dma); |
| 460 | err_out2: |
| 461 | release_region(self->io.fir_base, self->io.fir_ext); |
| 462 | err_out1: |
| 463 | free_netdev(dev); |
| 464 | dev_self[i] = NULL; |
| 465 | return err; |
| 466 | } |
| 467 | |
| 468 | /* |
| 469 | * Function via_ircc_close (self) |
| 470 | * |
| 471 | * Close driver instance |
| 472 | * |
| 473 | */ |
| 474 | static int via_ircc_close(struct via_ircc_cb *self) |
| 475 | { |
| 476 | int iobase; |
| 477 | |
| 478 | IRDA_DEBUG(3, "%s()\n", __FUNCTION__); |
| 479 | |
| 480 | IRDA_ASSERT(self != NULL, return -1;); |
| 481 | |
| 482 | iobase = self->io.fir_base; |
| 483 | |
| 484 | ResetChip(iobase, 5); //hardware reset. |
| 485 | /* Remove netdevice */ |
| 486 | unregister_netdev(self->netdev); |
| 487 | |
| 488 | /* Release the PORT that this driver is using */ |
| 489 | IRDA_DEBUG(2, "%s(), Releasing Region %03x\n", |
| 490 | __FUNCTION__, self->io.fir_base); |
| 491 | release_region(self->io.fir_base, self->io.fir_ext); |
| 492 | if (self->tx_buff.head) |
| 493 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 494 | self->tx_buff.head, self->tx_buff_dma); |
| 495 | if (self->rx_buff.head) |
| 496 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 497 | self->rx_buff.head, self->rx_buff_dma); |
| 498 | dev_self[self->index] = NULL; |
| 499 | |
| 500 | free_netdev(self->netdev); |
| 501 | |
| 502 | return 0; |
| 503 | } |
| 504 | |
| 505 | /* |
| 506 | * Function via_hw_init(self) |
| 507 | * |
| 508 | * Returns non-negative on success. |
| 509 | * |
| 510 | * Formerly via_ircc_setup |
| 511 | */ |
| 512 | static void via_hw_init(struct via_ircc_cb *self) |
| 513 | { |
| 514 | int iobase = self->io.fir_base; |
| 515 | |
| 516 | IRDA_DEBUG(3, "%s()\n", __FUNCTION__); |
| 517 | |
| 518 | SetMaxRxPacketSize(iobase, 0x0fff); //set to max:4095 |
| 519 | // FIFO Init |
| 520 | EnRXFIFOReadyInt(iobase, OFF); |
| 521 | EnRXFIFOHalfLevelInt(iobase, OFF); |
| 522 | EnTXFIFOHalfLevelInt(iobase, OFF); |
| 523 | EnTXFIFOUnderrunEOMInt(iobase, ON); |
| 524 | EnTXFIFOReadyInt(iobase, OFF); |
| 525 | InvertTX(iobase, OFF); |
| 526 | InvertRX(iobase, OFF); |
| 527 | |
| 528 | if (ReadLPCReg(0x20) == 0x3c) |
| 529 | WriteLPCReg(0xF0, 0); // for VT1211 |
| 530 | /* Int Init */ |
| 531 | EnRXSpecInt(iobase, ON); |
| 532 | |
| 533 | /* The following is basically hwreset */ |
| 534 | /* If this is the case, why not just call hwreset() ? Jean II */ |
| 535 | ResetChip(iobase, 5); |
| 536 | EnableDMA(iobase, OFF); |
| 537 | EnableTX(iobase, OFF); |
| 538 | EnableRX(iobase, OFF); |
| 539 | EnRXDMA(iobase, OFF); |
| 540 | EnTXDMA(iobase, OFF); |
| 541 | RXStart(iobase, OFF); |
| 542 | TXStart(iobase, OFF); |
| 543 | InitCard(iobase); |
| 544 | CommonInit(iobase); |
| 545 | SIRFilter(iobase, ON); |
| 546 | SetSIR(iobase, ON); |
| 547 | CRC16(iobase, ON); |
| 548 | EnTXCRC(iobase, 0); |
| 549 | WriteReg(iobase, I_ST_CT_0, 0x00); |
| 550 | SetBaudRate(iobase, 9600); |
| 551 | SetPulseWidth(iobase, 12); |
| 552 | SetSendPreambleCount(iobase, 0); |
| 553 | |
| 554 | self->io.speed = 9600; |
| 555 | self->st_fifo.len = 0; |
| 556 | |
| 557 | via_ircc_change_dongle_speed(iobase, self->io.speed, |
| 558 | self->io.dongle_id); |
| 559 | |
| 560 | WriteReg(iobase, I_ST_CT_0, 0x80); |
| 561 | } |
| 562 | |
| 563 | /* |
| 564 | * Function via_ircc_read_dongle_id (void) |
| 565 | * |
| 566 | */ |
| 567 | static int via_ircc_read_dongle_id(int iobase) |
| 568 | { |
| 569 | int dongle_id = 9; /* Default to IBM */ |
| 570 | |
| 571 | IRDA_ERROR("via-ircc: dongle probing not supported, please specify dongle_id module parameter.\n"); |
| 572 | return dongle_id; |
| 573 | } |
| 574 | |
| 575 | /* |
| 576 | * Function via_ircc_change_dongle_speed (iobase, speed, dongle_id) |
| 577 | * Change speed of the attach dongle |
| 578 | * only implement two type of dongle currently. |
| 579 | */ |
| 580 | static void via_ircc_change_dongle_speed(int iobase, int speed, |
| 581 | int dongle_id) |
| 582 | { |
| 583 | u8 mode = 0; |
| 584 | |
| 585 | /* speed is unused, as we use IsSIROn()/IsMIROn() */ |
| 586 | speed = speed; |
| 587 | |
| 588 | IRDA_DEBUG(1, "%s(): change_dongle_speed to %d for 0x%x, %d\n", |
| 589 | __FUNCTION__, speed, iobase, dongle_id); |
| 590 | |
| 591 | switch (dongle_id) { |
| 592 | |
| 593 | /* Note: The dongle_id's listed here are derived from |
| 594 | * nsc-ircc.c */ |
| 595 | |
| 596 | case 0x08: /* HP HSDL-2300, HP HSDL-3600/HSDL-3610 */ |
| 597 | UseOneRX(iobase, ON); // use one RX pin RX1,RX2 |
| 598 | InvertTX(iobase, OFF); |
| 599 | InvertRX(iobase, OFF); |
| 600 | |
| 601 | EnRX2(iobase, ON); //sir to rx2 |
| 602 | EnGPIOtoRX2(iobase, OFF); |
| 603 | |
| 604 | if (IsSIROn(iobase)) { //sir |
| 605 | // Mode select Off |
| 606 | SlowIRRXLowActive(iobase, ON); |
| 607 | udelay(1000); |
| 608 | SlowIRRXLowActive(iobase, OFF); |
| 609 | } else { |
| 610 | if (IsMIROn(iobase)) { //mir |
| 611 | // Mode select On |
| 612 | SlowIRRXLowActive(iobase, OFF); |
| 613 | udelay(20); |
| 614 | } else { // fir |
| 615 | if (IsFIROn(iobase)) { //fir |
| 616 | // Mode select On |
| 617 | SlowIRRXLowActive(iobase, OFF); |
| 618 | udelay(20); |
| 619 | } |
| 620 | } |
| 621 | } |
| 622 | break; |
| 623 | |
| 624 | case 0x09: /* IBM31T1100 or Temic TFDS6000/TFDS6500 */ |
| 625 | UseOneRX(iobase, ON); //use ONE RX....RX1 |
| 626 | InvertTX(iobase, OFF); |
| 627 | InvertRX(iobase, OFF); // invert RX pin |
| 628 | |
| 629 | EnRX2(iobase, ON); |
| 630 | EnGPIOtoRX2(iobase, OFF); |
| 631 | if (IsSIROn(iobase)) { //sir |
| 632 | // Mode select On |
| 633 | SlowIRRXLowActive(iobase, ON); |
| 634 | udelay(20); |
| 635 | // Mode select Off |
| 636 | SlowIRRXLowActive(iobase, OFF); |
| 637 | } |
| 638 | if (IsMIROn(iobase)) { //mir |
| 639 | // Mode select On |
| 640 | SlowIRRXLowActive(iobase, OFF); |
| 641 | udelay(20); |
| 642 | // Mode select Off |
| 643 | SlowIRRXLowActive(iobase, ON); |
| 644 | } else { // fir |
| 645 | if (IsFIROn(iobase)) { //fir |
| 646 | // Mode select On |
| 647 | SlowIRRXLowActive(iobase, OFF); |
| 648 | // TX On |
| 649 | WriteTX(iobase, ON); |
| 650 | udelay(20); |
| 651 | // Mode select OFF |
| 652 | SlowIRRXLowActive(iobase, ON); |
| 653 | udelay(20); |
| 654 | // TX Off |
| 655 | WriteTX(iobase, OFF); |
| 656 | } |
| 657 | } |
| 658 | break; |
| 659 | |
| 660 | case 0x0d: |
| 661 | UseOneRX(iobase, OFF); // use two RX pin RX1,RX2 |
| 662 | InvertTX(iobase, OFF); |
| 663 | InvertRX(iobase, OFF); |
| 664 | SlowIRRXLowActive(iobase, OFF); |
| 665 | if (IsSIROn(iobase)) { //sir |
| 666 | EnGPIOtoRX2(iobase, OFF); |
| 667 | WriteGIO(iobase, OFF); |
| 668 | EnRX2(iobase, OFF); //sir to rx2 |
| 669 | } else { // fir mir |
| 670 | EnGPIOtoRX2(iobase, OFF); |
| 671 | WriteGIO(iobase, OFF); |
| 672 | EnRX2(iobase, OFF); //fir to rx |
| 673 | } |
| 674 | break; |
| 675 | |
| 676 | case 0x11: /* Temic TFDS4500 */ |
| 677 | |
| 678 | IRDA_DEBUG(2, "%s: Temic TFDS4500: One RX pin, TX normal, RX inverted.\n", __FUNCTION__); |
| 679 | |
| 680 | UseOneRX(iobase, ON); //use ONE RX....RX1 |
| 681 | InvertTX(iobase, OFF); |
| 682 | InvertRX(iobase, ON); // invert RX pin |
| 683 | |
| 684 | EnRX2(iobase, ON); //sir to rx2 |
| 685 | EnGPIOtoRX2(iobase, OFF); |
| 686 | |
| 687 | if( IsSIROn(iobase) ){ //sir |
| 688 | |
| 689 | // Mode select On |
| 690 | SlowIRRXLowActive(iobase, ON); |
| 691 | udelay(20); |
| 692 | // Mode select Off |
| 693 | SlowIRRXLowActive(iobase, OFF); |
| 694 | |
| 695 | } else{ |
| 696 | IRDA_DEBUG(0, "%s: Warning: TFDS4500 not running in SIR mode !\n", __FUNCTION__); |
| 697 | } |
| 698 | break; |
| 699 | |
| 700 | case 0x0ff: /* Vishay */ |
| 701 | if (IsSIROn(iobase)) |
| 702 | mode = 0; |
| 703 | else if (IsMIROn(iobase)) |
| 704 | mode = 1; |
| 705 | else if (IsFIROn(iobase)) |
| 706 | mode = 2; |
| 707 | else if (IsVFIROn(iobase)) |
| 708 | mode = 5; //VFIR-16 |
| 709 | SI_SetMode(iobase, mode); |
| 710 | break; |
| 711 | |
| 712 | default: |
| 713 | IRDA_ERROR("%s: Error: dongle_id %d unsupported !\n", |
| 714 | __FUNCTION__, dongle_id); |
| 715 | } |
| 716 | } |
| 717 | |
| 718 | /* |
| 719 | * Function via_ircc_change_speed (self, baud) |
| 720 | * |
| 721 | * Change the speed of the device |
| 722 | * |
| 723 | */ |
| 724 | static void via_ircc_change_speed(struct via_ircc_cb *self, __u32 speed) |
| 725 | { |
| 726 | struct net_device *dev = self->netdev; |
| 727 | u16 iobase; |
| 728 | u8 value = 0, bTmp; |
| 729 | |
| 730 | iobase = self->io.fir_base; |
| 731 | /* Update accounting for new speed */ |
| 732 | self->io.speed = speed; |
| 733 | IRDA_DEBUG(1, "%s: change_speed to %d bps.\n", __FUNCTION__, speed); |
| 734 | |
| 735 | WriteReg(iobase, I_ST_CT_0, 0x0); |
| 736 | |
| 737 | /* Controller mode sellection */ |
| 738 | switch (speed) { |
| 739 | case 2400: |
| 740 | case 9600: |
| 741 | case 19200: |
| 742 | case 38400: |
| 743 | case 57600: |
| 744 | case 115200: |
| 745 | value = (115200/speed)-1; |
| 746 | SetSIR(iobase, ON); |
| 747 | CRC16(iobase, ON); |
| 748 | break; |
| 749 | case 576000: |
| 750 | /* FIXME: this can't be right, as it's the same as 115200, |
| 751 | * and 576000 is MIR, not SIR. */ |
| 752 | value = 0; |
| 753 | SetSIR(iobase, ON); |
| 754 | CRC16(iobase, ON); |
| 755 | break; |
| 756 | case 1152000: |
| 757 | value = 0; |
| 758 | SetMIR(iobase, ON); |
| 759 | /* FIXME: CRC ??? */ |
| 760 | break; |
| 761 | case 4000000: |
| 762 | value = 0; |
| 763 | SetFIR(iobase, ON); |
| 764 | SetPulseWidth(iobase, 0); |
| 765 | SetSendPreambleCount(iobase, 14); |
| 766 | CRC16(iobase, OFF); |
| 767 | EnTXCRC(iobase, ON); |
| 768 | break; |
| 769 | case 16000000: |
| 770 | value = 0; |
| 771 | SetVFIR(iobase, ON); |
| 772 | /* FIXME: CRC ??? */ |
| 773 | break; |
| 774 | default: |
| 775 | value = 0; |
| 776 | break; |
| 777 | } |
| 778 | |
| 779 | /* Set baudrate to 0x19[2..7] */ |
| 780 | bTmp = (ReadReg(iobase, I_CF_H_1) & 0x03); |
| 781 | bTmp |= value << 2; |
| 782 | WriteReg(iobase, I_CF_H_1, bTmp); |
| 783 | |
| 784 | /* Some dongles may need to be informed about speed changes. */ |
| 785 | via_ircc_change_dongle_speed(iobase, speed, self->io.dongle_id); |
| 786 | |
| 787 | /* Set FIFO size to 64 */ |
| 788 | SetFIFO(iobase, 64); |
| 789 | |
| 790 | /* Enable IR */ |
| 791 | WriteReg(iobase, I_ST_CT_0, 0x80); |
| 792 | |
| 793 | // EnTXFIFOHalfLevelInt(iobase,ON); |
| 794 | |
| 795 | /* Enable some interrupts so we can receive frames */ |
| 796 | //EnAllInt(iobase,ON); |
| 797 | |
| 798 | if (IsSIROn(iobase)) { |
| 799 | SIRFilter(iobase, ON); |
| 800 | SIRRecvAny(iobase, ON); |
| 801 | } else { |
| 802 | SIRFilter(iobase, OFF); |
| 803 | SIRRecvAny(iobase, OFF); |
| 804 | } |
| 805 | |
| 806 | if (speed > 115200) { |
| 807 | /* Install FIR xmit handler */ |
| 808 | dev->hard_start_xmit = via_ircc_hard_xmit_fir; |
| 809 | via_ircc_dma_receive(self); |
| 810 | } else { |
| 811 | /* Install SIR xmit handler */ |
| 812 | dev->hard_start_xmit = via_ircc_hard_xmit_sir; |
| 813 | } |
| 814 | netif_wake_queue(dev); |
| 815 | } |
| 816 | |
| 817 | /* |
| 818 | * Function via_ircc_hard_xmit (skb, dev) |
| 819 | * |
| 820 | * Transmit the frame! |
| 821 | * |
| 822 | */ |
| 823 | static int via_ircc_hard_xmit_sir(struct sk_buff *skb, |
| 824 | struct net_device *dev) |
| 825 | { |
| 826 | struct via_ircc_cb *self; |
| 827 | unsigned long flags; |
| 828 | u16 iobase; |
| 829 | __u32 speed; |
| 830 | |
| 831 | self = (struct via_ircc_cb *) dev->priv; |
| 832 | IRDA_ASSERT(self != NULL, return 0;); |
| 833 | iobase = self->io.fir_base; |
| 834 | |
| 835 | netif_stop_queue(dev); |
| 836 | /* Check if we need to change the speed */ |
| 837 | speed = irda_get_next_speed(skb); |
| 838 | if ((speed != self->io.speed) && (speed != -1)) { |
| 839 | /* Check for empty frame */ |
| 840 | if (!skb->len) { |
| 841 | via_ircc_change_speed(self, speed); |
| 842 | dev->trans_start = jiffies; |
| 843 | dev_kfree_skb(skb); |
| 844 | return 0; |
| 845 | } else |
| 846 | self->new_speed = speed; |
| 847 | } |
| 848 | InitCard(iobase); |
| 849 | CommonInit(iobase); |
| 850 | SIRFilter(iobase, ON); |
| 851 | SetSIR(iobase, ON); |
| 852 | CRC16(iobase, ON); |
| 853 | EnTXCRC(iobase, 0); |
| 854 | WriteReg(iobase, I_ST_CT_0, 0x00); |
| 855 | |
| 856 | spin_lock_irqsave(&self->lock, flags); |
| 857 | self->tx_buff.data = self->tx_buff.head; |
| 858 | self->tx_buff.len = |
| 859 | async_wrap_skb(skb, self->tx_buff.data, |
| 860 | self->tx_buff.truesize); |
| 861 | |
| 862 | self->stats.tx_bytes += self->tx_buff.len; |
| 863 | /* Send this frame with old speed */ |
| 864 | SetBaudRate(iobase, self->io.speed); |
| 865 | SetPulseWidth(iobase, 12); |
| 866 | SetSendPreambleCount(iobase, 0); |
| 867 | WriteReg(iobase, I_ST_CT_0, 0x80); |
| 868 | |
| 869 | EnableTX(iobase, ON); |
| 870 | EnableRX(iobase, OFF); |
| 871 | |
| 872 | ResetChip(iobase, 0); |
| 873 | ResetChip(iobase, 1); |
| 874 | ResetChip(iobase, 2); |
| 875 | ResetChip(iobase, 3); |
| 876 | ResetChip(iobase, 4); |
| 877 | |
| 878 | EnAllInt(iobase, ON); |
| 879 | EnTXDMA(iobase, ON); |
| 880 | EnRXDMA(iobase, OFF); |
| 881 | |
| 882 | irda_setup_dma(self->io.dma, self->tx_buff_dma, self->tx_buff.len, |
| 883 | DMA_TX_MODE); |
| 884 | |
| 885 | SetSendByte(iobase, self->tx_buff.len); |
| 886 | RXStart(iobase, OFF); |
| 887 | TXStart(iobase, ON); |
| 888 | |
| 889 | dev->trans_start = jiffies; |
| 890 | spin_unlock_irqrestore(&self->lock, flags); |
| 891 | dev_kfree_skb(skb); |
| 892 | return 0; |
| 893 | } |
| 894 | |
| 895 | static int via_ircc_hard_xmit_fir(struct sk_buff *skb, |
| 896 | struct net_device *dev) |
| 897 | { |
| 898 | struct via_ircc_cb *self; |
| 899 | u16 iobase; |
| 900 | __u32 speed; |
| 901 | unsigned long flags; |
| 902 | |
| 903 | self = (struct via_ircc_cb *) dev->priv; |
| 904 | iobase = self->io.fir_base; |
| 905 | |
| 906 | if (self->st_fifo.len) |
| 907 | return 0; |
| 908 | if (self->chip_id == 0x3076) |
| 909 | iodelay(1500); |
| 910 | else |
| 911 | udelay(1500); |
| 912 | netif_stop_queue(dev); |
| 913 | speed = irda_get_next_speed(skb); |
| 914 | if ((speed != self->io.speed) && (speed != -1)) { |
| 915 | if (!skb->len) { |
| 916 | via_ircc_change_speed(self, speed); |
| 917 | dev->trans_start = jiffies; |
| 918 | dev_kfree_skb(skb); |
| 919 | return 0; |
| 920 | } else |
| 921 | self->new_speed = speed; |
| 922 | } |
| 923 | spin_lock_irqsave(&self->lock, flags); |
| 924 | self->tx_fifo.queue[self->tx_fifo.free].start = self->tx_fifo.tail; |
| 925 | self->tx_fifo.queue[self->tx_fifo.free].len = skb->len; |
| 926 | |
| 927 | self->tx_fifo.tail += skb->len; |
| 928 | self->stats.tx_bytes += skb->len; |
| 929 | memcpy(self->tx_fifo.queue[self->tx_fifo.free].start, skb->data, |
| 930 | skb->len); |
| 931 | self->tx_fifo.len++; |
| 932 | self->tx_fifo.free++; |
| 933 | //F01 if (self->tx_fifo.len == 1) { |
| 934 | via_ircc_dma_xmit(self, iobase); |
| 935 | //F01 } |
| 936 | //F01 if (self->tx_fifo.free < (MAX_TX_WINDOW -1 )) netif_wake_queue(self->netdev); |
| 937 | dev->trans_start = jiffies; |
| 938 | dev_kfree_skb(skb); |
| 939 | spin_unlock_irqrestore(&self->lock, flags); |
| 940 | return 0; |
| 941 | |
| 942 | } |
| 943 | |
| 944 | static int via_ircc_dma_xmit(struct via_ircc_cb *self, u16 iobase) |
| 945 | { |
| 946 | EnTXDMA(iobase, OFF); |
| 947 | self->io.direction = IO_XMIT; |
| 948 | EnPhys(iobase, ON); |
| 949 | EnableTX(iobase, ON); |
| 950 | EnableRX(iobase, OFF); |
| 951 | ResetChip(iobase, 0); |
| 952 | ResetChip(iobase, 1); |
| 953 | ResetChip(iobase, 2); |
| 954 | ResetChip(iobase, 3); |
| 955 | ResetChip(iobase, 4); |
| 956 | EnAllInt(iobase, ON); |
| 957 | EnTXDMA(iobase, ON); |
| 958 | EnRXDMA(iobase, OFF); |
| 959 | irda_setup_dma(self->io.dma, |
| 960 | ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start - |
| 961 | self->tx_buff.head) + self->tx_buff_dma, |
| 962 | self->tx_fifo.queue[self->tx_fifo.ptr].len, DMA_TX_MODE); |
| 963 | IRDA_DEBUG(1, "%s: tx_fifo.ptr=%x,len=%x,tx_fifo.len=%x..\n", |
| 964 | __FUNCTION__, self->tx_fifo.ptr, |
| 965 | self->tx_fifo.queue[self->tx_fifo.ptr].len, |
| 966 | self->tx_fifo.len); |
| 967 | |
| 968 | SetSendByte(iobase, self->tx_fifo.queue[self->tx_fifo.ptr].len); |
| 969 | RXStart(iobase, OFF); |
| 970 | TXStart(iobase, ON); |
| 971 | return 0; |
| 972 | |
| 973 | } |
| 974 | |
| 975 | /* |
| 976 | * Function via_ircc_dma_xmit_complete (self) |
| 977 | * |
| 978 | * The transfer of a frame in finished. This function will only be called |
| 979 | * by the interrupt handler |
| 980 | * |
| 981 | */ |
| 982 | static int via_ircc_dma_xmit_complete(struct via_ircc_cb *self) |
| 983 | { |
| 984 | int iobase; |
| 985 | int ret = TRUE; |
| 986 | u8 Tx_status; |
| 987 | |
| 988 | IRDA_DEBUG(3, "%s()\n", __FUNCTION__); |
| 989 | |
| 990 | iobase = self->io.fir_base; |
| 991 | /* Disable DMA */ |
| 992 | // DisableDmaChannel(self->io.dma); |
| 993 | /* Check for underrrun! */ |
| 994 | /* Clear bit, by writing 1 into it */ |
| 995 | Tx_status = GetTXStatus(iobase); |
| 996 | if (Tx_status & 0x08) { |
| 997 | self->stats.tx_errors++; |
| 998 | self->stats.tx_fifo_errors++; |
| 999 | hwreset(self); |
| 1000 | // how to clear underrrun ? |
| 1001 | } else { |
| 1002 | self->stats.tx_packets++; |
| 1003 | ResetChip(iobase, 3); |
| 1004 | ResetChip(iobase, 4); |
| 1005 | } |
| 1006 | /* Check if we need to change the speed */ |
| 1007 | if (self->new_speed) { |
| 1008 | via_ircc_change_speed(self, self->new_speed); |
| 1009 | self->new_speed = 0; |
| 1010 | } |
| 1011 | |
| 1012 | /* Finished with this frame, so prepare for next */ |
| 1013 | if (IsFIROn(iobase)) { |
| 1014 | if (self->tx_fifo.len) { |
| 1015 | self->tx_fifo.len--; |
| 1016 | self->tx_fifo.ptr++; |
| 1017 | } |
| 1018 | } |
| 1019 | IRDA_DEBUG(1, |
| 1020 | "%s: tx_fifo.len=%x ,tx_fifo.ptr=%x,tx_fifo.free=%x...\n", |
| 1021 | __FUNCTION__, |
| 1022 | self->tx_fifo.len, self->tx_fifo.ptr, self->tx_fifo.free); |
| 1023 | /* F01_S |
| 1024 | // Any frames to be sent back-to-back? |
| 1025 | if (self->tx_fifo.len) { |
| 1026 | // Not finished yet! |
| 1027 | via_ircc_dma_xmit(self, iobase); |
| 1028 | ret = FALSE; |
| 1029 | } else { |
| 1030 | F01_E*/ |
| 1031 | // Reset Tx FIFO info |
| 1032 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; |
| 1033 | self->tx_fifo.tail = self->tx_buff.head; |
| 1034 | //F01 } |
| 1035 | |
| 1036 | // Make sure we have room for more frames |
| 1037 | //F01 if (self->tx_fifo.free < (MAX_TX_WINDOW -1 )) { |
| 1038 | // Not busy transmitting anymore |
| 1039 | // Tell the network layer, that we can accept more frames |
| 1040 | netif_wake_queue(self->netdev); |
| 1041 | //F01 } |
| 1042 | return ret; |
| 1043 | } |
| 1044 | |
| 1045 | /* |
| 1046 | * Function via_ircc_dma_receive (self) |
| 1047 | * |
| 1048 | * Set configuration for receive a frame. |
| 1049 | * |
| 1050 | */ |
| 1051 | static int via_ircc_dma_receive(struct via_ircc_cb *self) |
| 1052 | { |
| 1053 | int iobase; |
| 1054 | |
| 1055 | iobase = self->io.fir_base; |
| 1056 | |
| 1057 | IRDA_DEBUG(3, "%s()\n", __FUNCTION__); |
| 1058 | |
| 1059 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; |
| 1060 | self->tx_fifo.tail = self->tx_buff.head; |
| 1061 | self->RxDataReady = 0; |
| 1062 | self->io.direction = IO_RECV; |
| 1063 | self->rx_buff.data = self->rx_buff.head; |
| 1064 | self->st_fifo.len = self->st_fifo.pending_bytes = 0; |
| 1065 | self->st_fifo.tail = self->st_fifo.head = 0; |
| 1066 | |
| 1067 | EnPhys(iobase, ON); |
| 1068 | EnableTX(iobase, OFF); |
| 1069 | EnableRX(iobase, ON); |
| 1070 | |
| 1071 | ResetChip(iobase, 0); |
| 1072 | ResetChip(iobase, 1); |
| 1073 | ResetChip(iobase, 2); |
| 1074 | ResetChip(iobase, 3); |
| 1075 | ResetChip(iobase, 4); |
| 1076 | |
| 1077 | EnAllInt(iobase, ON); |
| 1078 | EnTXDMA(iobase, OFF); |
| 1079 | EnRXDMA(iobase, ON); |
| 1080 | irda_setup_dma(self->io.dma2, self->rx_buff_dma, |
| 1081 | self->rx_buff.truesize, DMA_RX_MODE); |
| 1082 | TXStart(iobase, OFF); |
| 1083 | RXStart(iobase, ON); |
| 1084 | |
| 1085 | return 0; |
| 1086 | } |
| 1087 | |
| 1088 | /* |
| 1089 | * Function via_ircc_dma_receive_complete (self) |
| 1090 | * |
| 1091 | * Controller Finished with receiving frames, |
| 1092 | * and this routine is call by ISR |
| 1093 | * |
| 1094 | */ |
| 1095 | static int via_ircc_dma_receive_complete(struct via_ircc_cb *self, |
| 1096 | int iobase) |
| 1097 | { |
| 1098 | struct st_fifo *st_fifo; |
| 1099 | struct sk_buff *skb; |
| 1100 | int len, i; |
| 1101 | u8 status = 0; |
| 1102 | |
| 1103 | iobase = self->io.fir_base; |
| 1104 | st_fifo = &self->st_fifo; |
| 1105 | |
| 1106 | if (self->io.speed < 4000000) { //Speed below FIR |
| 1107 | len = GetRecvByte(iobase, self); |
| 1108 | skb = dev_alloc_skb(len + 1); |
| 1109 | if (skb == NULL) |
| 1110 | return FALSE; |
| 1111 | // Make sure IP header gets aligned |
| 1112 | skb_reserve(skb, 1); |
| 1113 | skb_put(skb, len - 2); |
| 1114 | if (self->chip_id == 0x3076) { |
| 1115 | for (i = 0; i < len - 2; i++) |
| 1116 | skb->data[i] = self->rx_buff.data[i * 2]; |
| 1117 | } else { |
| 1118 | if (self->chip_id == 0x3096) { |
| 1119 | for (i = 0; i < len - 2; i++) |
| 1120 | skb->data[i] = |
| 1121 | self->rx_buff.data[i]; |
| 1122 | } |
| 1123 | } |
| 1124 | // Move to next frame |
| 1125 | self->rx_buff.data += len; |
| 1126 | self->stats.rx_bytes += len; |
| 1127 | self->stats.rx_packets++; |
| 1128 | skb->dev = self->netdev; |
| 1129 | skb->mac.raw = skb->data; |
| 1130 | skb->protocol = htons(ETH_P_IRDA); |
| 1131 | netif_rx(skb); |
| 1132 | return TRUE; |
| 1133 | } |
| 1134 | |
| 1135 | else { //FIR mode |
| 1136 | len = GetRecvByte(iobase, self); |
| 1137 | if (len == 0) |
| 1138 | return TRUE; //interrupt only, data maybe move by RxT |
| 1139 | if (((len - 4) < 2) || ((len - 4) > 2048)) { |
| 1140 | IRDA_DEBUG(1, "%s(): Trouble:len=%x,CurCount=%x,LastCount=%x..\n", |
| 1141 | __FUNCTION__, len, RxCurCount(iobase, self), |
| 1142 | self->RxLastCount); |
| 1143 | hwreset(self); |
| 1144 | return FALSE; |
| 1145 | } |
| 1146 | IRDA_DEBUG(2, "%s(): fifo.len=%x,len=%x,CurCount=%x..\n", |
| 1147 | __FUNCTION__, |
| 1148 | st_fifo->len, len - 4, RxCurCount(iobase, self)); |
| 1149 | |
| 1150 | st_fifo->entries[st_fifo->tail].status = status; |
| 1151 | st_fifo->entries[st_fifo->tail].len = len; |
| 1152 | st_fifo->pending_bytes += len; |
| 1153 | st_fifo->tail++; |
| 1154 | st_fifo->len++; |
| 1155 | if (st_fifo->tail > MAX_RX_WINDOW) |
| 1156 | st_fifo->tail = 0; |
| 1157 | self->RxDataReady = 0; |
| 1158 | |
| 1159 | // It maybe have MAX_RX_WINDOW package receive by |
| 1160 | // receive_complete before Timer IRQ |
| 1161 | /* F01_S |
| 1162 | if (st_fifo->len < (MAX_RX_WINDOW+2 )) { |
| 1163 | RXStart(iobase,ON); |
| 1164 | SetTimer(iobase,4); |
| 1165 | } |
| 1166 | else { |
| 1167 | F01_E */ |
| 1168 | EnableRX(iobase, OFF); |
| 1169 | EnRXDMA(iobase, OFF); |
| 1170 | RXStart(iobase, OFF); |
| 1171 | //F01_S |
| 1172 | // Put this entry back in fifo |
| 1173 | if (st_fifo->head > MAX_RX_WINDOW) |
| 1174 | st_fifo->head = 0; |
| 1175 | status = st_fifo->entries[st_fifo->head].status; |
| 1176 | len = st_fifo->entries[st_fifo->head].len; |
| 1177 | st_fifo->head++; |
| 1178 | st_fifo->len--; |
| 1179 | |
| 1180 | skb = dev_alloc_skb(len + 1 - 4); |
| 1181 | /* |
| 1182 | * if frame size,data ptr,or skb ptr are wrong ,the get next |
| 1183 | * entry. |
| 1184 | */ |
| 1185 | if ((skb == NULL) || (skb->data == NULL) |
| 1186 | || (self->rx_buff.data == NULL) || (len < 6)) { |
| 1187 | self->stats.rx_dropped++; |
| 1188 | return TRUE; |
| 1189 | } |
| 1190 | skb_reserve(skb, 1); |
| 1191 | skb_put(skb, len - 4); |
| 1192 | |
| 1193 | memcpy(skb->data, self->rx_buff.data, len - 4); |
| 1194 | IRDA_DEBUG(2, "%s(): len=%x.rx_buff=%p\n", __FUNCTION__, |
| 1195 | len - 4, self->rx_buff.data); |
| 1196 | |
| 1197 | // Move to next frame |
| 1198 | self->rx_buff.data += len; |
| 1199 | self->stats.rx_bytes += len; |
| 1200 | self->stats.rx_packets++; |
| 1201 | skb->dev = self->netdev; |
| 1202 | skb->mac.raw = skb->data; |
| 1203 | skb->protocol = htons(ETH_P_IRDA); |
| 1204 | netif_rx(skb); |
| 1205 | |
| 1206 | //F01_E |
| 1207 | } //FIR |
| 1208 | return TRUE; |
| 1209 | |
| 1210 | } |
| 1211 | |
| 1212 | /* |
| 1213 | * if frame is received , but no INT ,then use this routine to upload frame. |
| 1214 | */ |
| 1215 | static int upload_rxdata(struct via_ircc_cb *self, int iobase) |
| 1216 | { |
| 1217 | struct sk_buff *skb; |
| 1218 | int len; |
| 1219 | struct st_fifo *st_fifo; |
| 1220 | st_fifo = &self->st_fifo; |
| 1221 | |
| 1222 | len = GetRecvByte(iobase, self); |
| 1223 | |
| 1224 | IRDA_DEBUG(2, "%s(): len=%x\n", __FUNCTION__, len); |
| 1225 | |
| 1226 | skb = dev_alloc_skb(len + 1); |
| 1227 | if ((skb == NULL) || ((len - 4) < 2)) { |
| 1228 | self->stats.rx_dropped++; |
| 1229 | return FALSE; |
| 1230 | } |
| 1231 | skb_reserve(skb, 1); |
| 1232 | skb_put(skb, len - 4 + 1); |
| 1233 | memcpy(skb->data, self->rx_buff.data, len - 4 + 1); |
| 1234 | st_fifo->tail++; |
| 1235 | st_fifo->len++; |
| 1236 | if (st_fifo->tail > MAX_RX_WINDOW) |
| 1237 | st_fifo->tail = 0; |
| 1238 | // Move to next frame |
| 1239 | self->rx_buff.data += len; |
| 1240 | self->stats.rx_bytes += len; |
| 1241 | self->stats.rx_packets++; |
| 1242 | skb->dev = self->netdev; |
| 1243 | skb->mac.raw = skb->data; |
| 1244 | skb->protocol = htons(ETH_P_IRDA); |
| 1245 | netif_rx(skb); |
| 1246 | if (st_fifo->len < (MAX_RX_WINDOW + 2)) { |
| 1247 | RXStart(iobase, ON); |
| 1248 | } else { |
| 1249 | EnableRX(iobase, OFF); |
| 1250 | EnRXDMA(iobase, OFF); |
| 1251 | RXStart(iobase, OFF); |
| 1252 | } |
| 1253 | return TRUE; |
| 1254 | } |
| 1255 | |
| 1256 | /* |
| 1257 | * Implement back to back receive , use this routine to upload data. |
| 1258 | */ |
| 1259 | |
| 1260 | static int RxTimerHandler(struct via_ircc_cb *self, int iobase) |
| 1261 | { |
| 1262 | struct st_fifo *st_fifo; |
| 1263 | struct sk_buff *skb; |
| 1264 | int len; |
| 1265 | u8 status; |
| 1266 | |
| 1267 | st_fifo = &self->st_fifo; |
| 1268 | |
| 1269 | if (CkRxRecv(iobase, self)) { |
| 1270 | // if still receiving ,then return ,don't upload frame |
| 1271 | self->RetryCount = 0; |
| 1272 | SetTimer(iobase, 20); |
| 1273 | self->RxDataReady++; |
| 1274 | return FALSE; |
| 1275 | } else |
| 1276 | self->RetryCount++; |
| 1277 | |
| 1278 | if ((self->RetryCount >= 1) || |
| 1279 | ((st_fifo->pending_bytes + 2048) > self->rx_buff.truesize) |
| 1280 | || (st_fifo->len >= (MAX_RX_WINDOW))) { |
| 1281 | while (st_fifo->len > 0) { //upload frame |
| 1282 | // Put this entry back in fifo |
| 1283 | if (st_fifo->head > MAX_RX_WINDOW) |
| 1284 | st_fifo->head = 0; |
| 1285 | status = st_fifo->entries[st_fifo->head].status; |
| 1286 | len = st_fifo->entries[st_fifo->head].len; |
| 1287 | st_fifo->head++; |
| 1288 | st_fifo->len--; |
| 1289 | |
| 1290 | skb = dev_alloc_skb(len + 1 - 4); |
| 1291 | /* |
| 1292 | * if frame size, data ptr, or skb ptr are wrong, |
| 1293 | * then get next entry. |
| 1294 | */ |
| 1295 | if ((skb == NULL) || (skb->data == NULL) |
| 1296 | || (self->rx_buff.data == NULL) || (len < 6)) { |
| 1297 | self->stats.rx_dropped++; |
| 1298 | continue; |
| 1299 | } |
| 1300 | skb_reserve(skb, 1); |
| 1301 | skb_put(skb, len - 4); |
| 1302 | memcpy(skb->data, self->rx_buff.data, len - 4); |
| 1303 | |
| 1304 | IRDA_DEBUG(2, "%s(): len=%x.head=%x\n", __FUNCTION__, |
| 1305 | len - 4, st_fifo->head); |
| 1306 | |
| 1307 | // Move to next frame |
| 1308 | self->rx_buff.data += len; |
| 1309 | self->stats.rx_bytes += len; |
| 1310 | self->stats.rx_packets++; |
| 1311 | skb->dev = self->netdev; |
| 1312 | skb->mac.raw = skb->data; |
| 1313 | skb->protocol = htons(ETH_P_IRDA); |
| 1314 | netif_rx(skb); |
| 1315 | } //while |
| 1316 | self->RetryCount = 0; |
| 1317 | |
| 1318 | IRDA_DEBUG(2, |
| 1319 | "%s(): End of upload HostStatus=%x,RxStatus=%x\n", |
| 1320 | __FUNCTION__, |
| 1321 | GetHostStatus(iobase), GetRXStatus(iobase)); |
| 1322 | |
| 1323 | /* |
| 1324 | * if frame is receive complete at this routine ,then upload |
| 1325 | * frame. |
| 1326 | */ |
| 1327 | if ((GetRXStatus(iobase) & 0x10) |
| 1328 | && (RxCurCount(iobase, self) != self->RxLastCount)) { |
| 1329 | upload_rxdata(self, iobase); |
| 1330 | if (irda_device_txqueue_empty(self->netdev)) |
| 1331 | via_ircc_dma_receive(self); |
| 1332 | } |
| 1333 | } // timer detect complete |
| 1334 | else |
| 1335 | SetTimer(iobase, 4); |
| 1336 | return TRUE; |
| 1337 | |
| 1338 | } |
| 1339 | |
| 1340 | |
| 1341 | |
| 1342 | /* |
| 1343 | * Function via_ircc_interrupt (irq, dev_id, regs) |
| 1344 | * |
| 1345 | * An interrupt from the chip has arrived. Time to do some work |
| 1346 | * |
| 1347 | */ |
| 1348 | static irqreturn_t via_ircc_interrupt(int irq, void *dev_id, |
| 1349 | struct pt_regs *regs) |
| 1350 | { |
| 1351 | struct net_device *dev = (struct net_device *) dev_id; |
| 1352 | struct via_ircc_cb *self; |
| 1353 | int iobase; |
| 1354 | u8 iHostIntType, iRxIntType, iTxIntType; |
| 1355 | |
| 1356 | if (!dev) { |
| 1357 | IRDA_WARNING("%s: irq %d for unknown device.\n", driver_name, |
| 1358 | irq); |
| 1359 | return IRQ_NONE; |
| 1360 | } |
| 1361 | self = (struct via_ircc_cb *) dev->priv; |
| 1362 | iobase = self->io.fir_base; |
| 1363 | spin_lock(&self->lock); |
| 1364 | iHostIntType = GetHostStatus(iobase); |
| 1365 | |
| 1366 | IRDA_DEBUG(4, "%s(): iHostIntType %02x: %s %s %s %02x\n", |
| 1367 | __FUNCTION__, iHostIntType, |
| 1368 | (iHostIntType & 0x40) ? "Timer" : "", |
| 1369 | (iHostIntType & 0x20) ? "Tx" : "", |
| 1370 | (iHostIntType & 0x10) ? "Rx" : "", |
| 1371 | (iHostIntType & 0x0e) >> 1); |
| 1372 | |
| 1373 | if ((iHostIntType & 0x40) != 0) { //Timer Event |
| 1374 | self->EventFlag.TimeOut++; |
| 1375 | ClearTimerInt(iobase, 1); |
| 1376 | if (self->io.direction == IO_XMIT) { |
| 1377 | via_ircc_dma_xmit(self, iobase); |
| 1378 | } |
| 1379 | if (self->io.direction == IO_RECV) { |
| 1380 | /* |
| 1381 | * frame ready hold too long, must reset. |
| 1382 | */ |
| 1383 | if (self->RxDataReady > 30) { |
| 1384 | hwreset(self); |
| 1385 | if (irda_device_txqueue_empty(self->netdev)) { |
| 1386 | via_ircc_dma_receive(self); |
| 1387 | } |
| 1388 | } else { // call this to upload frame. |
| 1389 | RxTimerHandler(self, iobase); |
| 1390 | } |
| 1391 | } //RECV |
| 1392 | } //Timer Event |
| 1393 | if ((iHostIntType & 0x20) != 0) { //Tx Event |
| 1394 | iTxIntType = GetTXStatus(iobase); |
| 1395 | |
| 1396 | IRDA_DEBUG(4, "%s(): iTxIntType %02x: %s %s %s %s\n", |
| 1397 | __FUNCTION__, iTxIntType, |
| 1398 | (iTxIntType & 0x08) ? "FIFO underr." : "", |
| 1399 | (iTxIntType & 0x04) ? "EOM" : "", |
| 1400 | (iTxIntType & 0x02) ? "FIFO ready" : "", |
| 1401 | (iTxIntType & 0x01) ? "Early EOM" : ""); |
| 1402 | |
| 1403 | if (iTxIntType & 0x4) { |
| 1404 | self->EventFlag.EOMessage++; // read and will auto clean |
| 1405 | if (via_ircc_dma_xmit_complete(self)) { |
| 1406 | if (irda_device_txqueue_empty |
| 1407 | (self->netdev)) { |
| 1408 | via_ircc_dma_receive(self); |
| 1409 | } |
| 1410 | } else { |
| 1411 | self->EventFlag.Unknown++; |
| 1412 | } |
| 1413 | } //EOP |
| 1414 | } //Tx Event |
| 1415 | //---------------------------------------- |
| 1416 | if ((iHostIntType & 0x10) != 0) { //Rx Event |
| 1417 | /* Check if DMA has finished */ |
| 1418 | iRxIntType = GetRXStatus(iobase); |
| 1419 | |
| 1420 | IRDA_DEBUG(4, "%s(): iRxIntType %02x: %s %s %s %s %s %s %s\n", |
| 1421 | __FUNCTION__, iRxIntType, |
| 1422 | (iRxIntType & 0x80) ? "PHY err." : "", |
| 1423 | (iRxIntType & 0x40) ? "CRC err" : "", |
| 1424 | (iRxIntType & 0x20) ? "FIFO overr." : "", |
| 1425 | (iRxIntType & 0x10) ? "EOF" : "", |
| 1426 | (iRxIntType & 0x08) ? "RxData" : "", |
| 1427 | (iRxIntType & 0x02) ? "RxMaxLen" : "", |
| 1428 | (iRxIntType & 0x01) ? "SIR bad" : ""); |
| 1429 | if (!iRxIntType) |
| 1430 | IRDA_DEBUG(3, "%s(): RxIRQ =0\n", __FUNCTION__); |
| 1431 | |
| 1432 | if (iRxIntType & 0x10) { |
| 1433 | if (via_ircc_dma_receive_complete(self, iobase)) { |
| 1434 | //F01 if(!(IsFIROn(iobase))) via_ircc_dma_receive(self); |
| 1435 | via_ircc_dma_receive(self); |
| 1436 | } |
| 1437 | } // No ERR |
| 1438 | else { //ERR |
| 1439 | IRDA_DEBUG(4, "%s(): RxIRQ ERR:iRxIntType=%x,HostIntType=%x,CurCount=%x,RxLastCount=%x_____\n", |
| 1440 | __FUNCTION__, iRxIntType, iHostIntType, |
| 1441 | RxCurCount(iobase, self), |
| 1442 | self->RxLastCount); |
| 1443 | |
| 1444 | if (iRxIntType & 0x20) { //FIFO OverRun ERR |
| 1445 | ResetChip(iobase, 0); |
| 1446 | ResetChip(iobase, 1); |
| 1447 | } else { //PHY,CRC ERR |
| 1448 | |
| 1449 | if (iRxIntType != 0x08) |
| 1450 | hwreset(self); //F01 |
| 1451 | } |
| 1452 | via_ircc_dma_receive(self); |
| 1453 | } //ERR |
| 1454 | |
| 1455 | } //Rx Event |
| 1456 | spin_unlock(&self->lock); |
| 1457 | return IRQ_RETVAL(iHostIntType); |
| 1458 | } |
| 1459 | |
| 1460 | static void hwreset(struct via_ircc_cb *self) |
| 1461 | { |
| 1462 | int iobase; |
| 1463 | iobase = self->io.fir_base; |
| 1464 | |
| 1465 | IRDA_DEBUG(3, "%s()\n", __FUNCTION__); |
| 1466 | |
| 1467 | ResetChip(iobase, 5); |
| 1468 | EnableDMA(iobase, OFF); |
| 1469 | EnableTX(iobase, OFF); |
| 1470 | EnableRX(iobase, OFF); |
| 1471 | EnRXDMA(iobase, OFF); |
| 1472 | EnTXDMA(iobase, OFF); |
| 1473 | RXStart(iobase, OFF); |
| 1474 | TXStart(iobase, OFF); |
| 1475 | InitCard(iobase); |
| 1476 | CommonInit(iobase); |
| 1477 | SIRFilter(iobase, ON); |
| 1478 | SetSIR(iobase, ON); |
| 1479 | CRC16(iobase, ON); |
| 1480 | EnTXCRC(iobase, 0); |
| 1481 | WriteReg(iobase, I_ST_CT_0, 0x00); |
| 1482 | SetBaudRate(iobase, 9600); |
| 1483 | SetPulseWidth(iobase, 12); |
| 1484 | SetSendPreambleCount(iobase, 0); |
| 1485 | WriteReg(iobase, I_ST_CT_0, 0x80); |
| 1486 | |
| 1487 | /* Restore speed. */ |
| 1488 | via_ircc_change_speed(self, self->io.speed); |
| 1489 | |
| 1490 | self->st_fifo.len = 0; |
| 1491 | } |
| 1492 | |
| 1493 | /* |
| 1494 | * Function via_ircc_is_receiving (self) |
| 1495 | * |
| 1496 | * Return TRUE is we are currently receiving a frame |
| 1497 | * |
| 1498 | */ |
| 1499 | static int via_ircc_is_receiving(struct via_ircc_cb *self) |
| 1500 | { |
| 1501 | int status = FALSE; |
| 1502 | int iobase; |
| 1503 | |
| 1504 | IRDA_ASSERT(self != NULL, return FALSE;); |
| 1505 | |
| 1506 | iobase = self->io.fir_base; |
| 1507 | if (CkRxRecv(iobase, self)) |
| 1508 | status = TRUE; |
| 1509 | |
| 1510 | IRDA_DEBUG(2, "%s(): status=%x....\n", __FUNCTION__, status); |
| 1511 | |
| 1512 | return status; |
| 1513 | } |
| 1514 | |
| 1515 | |
| 1516 | /* |
| 1517 | * Function via_ircc_net_open (dev) |
| 1518 | * |
| 1519 | * Start the device |
| 1520 | * |
| 1521 | */ |
| 1522 | static int via_ircc_net_open(struct net_device *dev) |
| 1523 | { |
| 1524 | struct via_ircc_cb *self; |
| 1525 | int iobase; |
| 1526 | char hwname[32]; |
| 1527 | |
| 1528 | IRDA_DEBUG(3, "%s()\n", __FUNCTION__); |
| 1529 | |
| 1530 | IRDA_ASSERT(dev != NULL, return -1;); |
| 1531 | self = (struct via_ircc_cb *) dev->priv; |
| 1532 | self->stats.rx_packets = 0; |
| 1533 | IRDA_ASSERT(self != NULL, return 0;); |
| 1534 | iobase = self->io.fir_base; |
| 1535 | if (request_irq(self->io.irq, via_ircc_interrupt, 0, dev->name, dev)) { |
| 1536 | IRDA_WARNING("%s, unable to allocate irq=%d\n", driver_name, |
| 1537 | self->io.irq); |
| 1538 | return -EAGAIN; |
| 1539 | } |
| 1540 | /* |
| 1541 | * Always allocate the DMA channel after the IRQ, and clean up on |
| 1542 | * failure. |
| 1543 | */ |
| 1544 | if (request_dma(self->io.dma, dev->name)) { |
| 1545 | IRDA_WARNING("%s, unable to allocate dma=%d\n", driver_name, |
| 1546 | self->io.dma); |
| 1547 | free_irq(self->io.irq, self); |
| 1548 | return -EAGAIN; |
| 1549 | } |
| 1550 | if (self->io.dma2 != self->io.dma) { |
| 1551 | if (request_dma(self->io.dma2, dev->name)) { |
| 1552 | IRDA_WARNING("%s, unable to allocate dma2=%d\n", |
| 1553 | driver_name, self->io.dma2); |
| 1554 | free_irq(self->io.irq, self); |
| 1555 | return -EAGAIN; |
| 1556 | } |
| 1557 | } |
| 1558 | |
| 1559 | |
| 1560 | /* turn on interrupts */ |
| 1561 | EnAllInt(iobase, ON); |
| 1562 | EnInternalLoop(iobase, OFF); |
| 1563 | EnExternalLoop(iobase, OFF); |
| 1564 | |
| 1565 | /* */ |
| 1566 | via_ircc_dma_receive(self); |
| 1567 | |
| 1568 | /* Ready to play! */ |
| 1569 | netif_start_queue(dev); |
| 1570 | |
| 1571 | /* |
| 1572 | * Open new IrLAP layer instance, now that everything should be |
| 1573 | * initialized properly |
| 1574 | */ |
| 1575 | sprintf(hwname, "VIA @ 0x%x", iobase); |
| 1576 | self->irlap = irlap_open(dev, &self->qos, hwname); |
| 1577 | |
| 1578 | self->RxLastCount = 0; |
| 1579 | |
| 1580 | return 0; |
| 1581 | } |
| 1582 | |
| 1583 | /* |
| 1584 | * Function via_ircc_net_close (dev) |
| 1585 | * |
| 1586 | * Stop the device |
| 1587 | * |
| 1588 | */ |
| 1589 | static int via_ircc_net_close(struct net_device *dev) |
| 1590 | { |
| 1591 | struct via_ircc_cb *self; |
| 1592 | int iobase; |
| 1593 | |
| 1594 | IRDA_DEBUG(3, "%s()\n", __FUNCTION__); |
| 1595 | |
| 1596 | IRDA_ASSERT(dev != NULL, return -1;); |
| 1597 | self = (struct via_ircc_cb *) dev->priv; |
| 1598 | IRDA_ASSERT(self != NULL, return 0;); |
| 1599 | |
| 1600 | /* Stop device */ |
| 1601 | netif_stop_queue(dev); |
| 1602 | /* Stop and remove instance of IrLAP */ |
| 1603 | if (self->irlap) |
| 1604 | irlap_close(self->irlap); |
| 1605 | self->irlap = NULL; |
| 1606 | iobase = self->io.fir_base; |
| 1607 | EnTXDMA(iobase, OFF); |
| 1608 | EnRXDMA(iobase, OFF); |
| 1609 | DisableDmaChannel(self->io.dma); |
| 1610 | |
| 1611 | /* Disable interrupts */ |
| 1612 | EnAllInt(iobase, OFF); |
| 1613 | free_irq(self->io.irq, dev); |
| 1614 | free_dma(self->io.dma); |
| 1615 | |
| 1616 | return 0; |
| 1617 | } |
| 1618 | |
| 1619 | /* |
| 1620 | * Function via_ircc_net_ioctl (dev, rq, cmd) |
| 1621 | * |
| 1622 | * Process IOCTL commands for this device |
| 1623 | * |
| 1624 | */ |
| 1625 | static int via_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, |
| 1626 | int cmd) |
| 1627 | { |
| 1628 | struct if_irda_req *irq = (struct if_irda_req *) rq; |
| 1629 | struct via_ircc_cb *self; |
| 1630 | unsigned long flags; |
| 1631 | int ret = 0; |
| 1632 | |
| 1633 | IRDA_ASSERT(dev != NULL, return -1;); |
| 1634 | self = dev->priv; |
| 1635 | IRDA_ASSERT(self != NULL, return -1;); |
| 1636 | IRDA_DEBUG(1, "%s(), %s, (cmd=0x%X)\n", __FUNCTION__, dev->name, |
| 1637 | cmd); |
| 1638 | /* Disable interrupts & save flags */ |
| 1639 | spin_lock_irqsave(&self->lock, flags); |
| 1640 | switch (cmd) { |
| 1641 | case SIOCSBANDWIDTH: /* Set bandwidth */ |
| 1642 | if (!capable(CAP_NET_ADMIN)) { |
| 1643 | ret = -EPERM; |
| 1644 | goto out; |
| 1645 | } |
| 1646 | via_ircc_change_speed(self, irq->ifr_baudrate); |
| 1647 | break; |
| 1648 | case SIOCSMEDIABUSY: /* Set media busy */ |
| 1649 | if (!capable(CAP_NET_ADMIN)) { |
| 1650 | ret = -EPERM; |
| 1651 | goto out; |
| 1652 | } |
| 1653 | irda_device_set_media_busy(self->netdev, TRUE); |
| 1654 | break; |
| 1655 | case SIOCGRECEIVING: /* Check if we are receiving right now */ |
| 1656 | irq->ifr_receiving = via_ircc_is_receiving(self); |
| 1657 | break; |
| 1658 | default: |
| 1659 | ret = -EOPNOTSUPP; |
| 1660 | } |
| 1661 | out: |
| 1662 | spin_unlock_irqrestore(&self->lock, flags); |
| 1663 | return ret; |
| 1664 | } |
| 1665 | |
| 1666 | static struct net_device_stats *via_ircc_net_get_stats(struct net_device |
| 1667 | *dev) |
| 1668 | { |
| 1669 | struct via_ircc_cb *self = (struct via_ircc_cb *) dev->priv; |
| 1670 | |
| 1671 | return &self->stats; |
| 1672 | } |
| 1673 | |
| 1674 | MODULE_AUTHOR("VIA Technologies,inc"); |
| 1675 | MODULE_DESCRIPTION("VIA IrDA Device Driver"); |
| 1676 | MODULE_LICENSE("GPL"); |
| 1677 | |
| 1678 | module_init(via_ircc_init); |
| 1679 | module_exit(via_ircc_cleanup); |