1 /********************************************************************
4 Description: Driver for the VIA VT8231/VT8233 IrDA chipsets
5 Author: VIA Technologies,inc
8 Copyright (c) 1998-2003 VIA Technologies, Inc.
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.
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.
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.
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.
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 .
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.
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>
56 #include <asm/byteorder.h>
60 #include <net/irda/wrapper.h>
61 #include <net/irda/irda.h>
62 #include <net/irda/irda_device.h>
66 #define VIA_MODULE_NAME "via-ircc"
67 #define CHIP_IO_EXTENT 0x40
69 static char *driver_name
= VIA_MODULE_NAME
;
71 /* Module parameters */
72 static int qos_mtt_bits
= 0x07; /* 1 ms or more */
73 static int dongle_id
= 0; /* default: probe */
75 /* We can't guess the type of connected dongle, user *must* supply it. */
76 module_param(dongle_id
, int, 0);
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
};
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
,
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 static int via_ircc_is_receiving(struct via_ircc_cb
*self
);
98 static int via_ircc_read_dongle_id(int iobase
);
100 static int via_ircc_net_open(struct net_device
*dev
);
101 static int via_ircc_net_close(struct net_device
*dev
);
102 static int via_ircc_net_ioctl(struct net_device
*dev
, struct ifreq
*rq
,
104 static void via_ircc_change_dongle_speed(int iobase
, int speed
,
106 static int RxTimerHandler(struct via_ircc_cb
*self
, int iobase
);
107 static void hwreset(struct via_ircc_cb
*self
);
108 static int via_ircc_dma_xmit(struct via_ircc_cb
*self
, u16 iobase
);
109 static int upload_rxdata(struct via_ircc_cb
*self
, int iobase
);
110 static int __devinit
via_init_one (struct pci_dev
*pcidev
, const struct pci_device_id
*id
);
111 static void __devexit
via_remove_one (struct pci_dev
*pdev
);
113 /* FIXME : Should use udelay() instead, even if we are x86 only - Jean II */
114 static void iodelay(int udelay
)
119 for (i
= 0; i
< udelay
; i
++) {
124 static struct pci_device_id via_pci_tbl
[] = {
125 { PCI_VENDOR_ID_VIA
, 0x8231, PCI_ANY_ID
, PCI_ANY_ID
,0,0,0 },
126 { PCI_VENDOR_ID_VIA
, 0x3109, PCI_ANY_ID
, PCI_ANY_ID
,0,0,1 },
127 { PCI_VENDOR_ID_VIA
, 0x3074, PCI_ANY_ID
, PCI_ANY_ID
,0,0,2 },
128 { PCI_VENDOR_ID_VIA
, 0x3147, PCI_ANY_ID
, PCI_ANY_ID
,0,0,3 },
129 { PCI_VENDOR_ID_VIA
, 0x3177, PCI_ANY_ID
, PCI_ANY_ID
,0,0,4 },
133 MODULE_DEVICE_TABLE(pci
,via_pci_tbl
);
136 static struct pci_driver via_driver
= {
137 .name
= VIA_MODULE_NAME
,
138 .id_table
= via_pci_tbl
,
139 .probe
= via_init_one
,
140 .remove
= __devexit_p(via_remove_one
),
145 * Function via_ircc_init ()
147 * Initialize chip. Just find out chip type and resource.
149 static int __init
via_ircc_init(void)
153 IRDA_DEBUG(3, "%s()\n", __func__
);
155 rc
= pci_register_driver(&via_driver
);
157 IRDA_DEBUG(0, "%s(): error rc = %d, returning -ENODEV...\n",
164 static int __devinit
via_init_one (struct pci_dev
*pcidev
, const struct pci_device_id
*id
)
167 u8 temp
,oldPCI_40
,oldPCI_44
,bTmp
,bTmp1
;
168 u16 Chipset
,FirDRQ1
,FirDRQ0
,FirIRQ
,FirIOBase
;
171 IRDA_DEBUG(2, "%s(): Device ID=(0X%X)\n", __func__
, id
->device
);
173 rc
= pci_enable_device (pcidev
);
175 IRDA_DEBUG(0, "%s(): error rc = %d\n", __func__
, rc
);
179 // South Bridge exist
180 if ( ReadLPCReg(0x20) != 0x3C )
185 if (Chipset
==0x3076) {
186 IRDA_DEBUG(2, "%s(): Chipset = 3076\n", __func__
);
188 WriteLPCReg(7,0x0c );
189 temp
=ReadLPCReg(0x30);//check if BIOS Enable Fir
190 if((temp
&0x01)==1) { // BIOS close or no FIR
191 WriteLPCReg(0x1d, 0x82 );
192 WriteLPCReg(0x23,0x18);
193 temp
=ReadLPCReg(0xF0);
195 temp
=(ReadLPCReg(0x74)&0x03); //DMA
197 temp
=(ReadLPCReg(0x74)&0x0C) >> 2;
200 temp
=(ReadLPCReg(0x74)&0x0C) >> 2; //DMA
204 FirIRQ
=(ReadLPCReg(0x70)&0x0f); //IRQ
205 FirIOBase
=ReadLPCReg(0x60 ) << 8; //IO Space :high byte
206 FirIOBase
=FirIOBase
| ReadLPCReg(0x61) ; //low byte
207 FirIOBase
=FirIOBase
;
208 info
.fir_base
=FirIOBase
;
212 pci_read_config_byte(pcidev
,0x40,&bTmp
);
213 pci_write_config_byte(pcidev
,0x40,((bTmp
| 0x08) & 0xfe));
214 pci_read_config_byte(pcidev
,0x42,&bTmp
);
215 pci_write_config_byte(pcidev
,0x42,(bTmp
| 0xf0));
216 pci_write_config_byte(pcidev
,0x5a,0xc0);
217 WriteLPCReg(0x28, 0x70 );
218 if (via_ircc_open(0, &info
,0x3076) == 0)
221 rc
= -ENODEV
; //IR not turn on
222 } else { //Not VT1211
223 IRDA_DEBUG(2, "%s(): Chipset = 3096\n", __func__
);
225 pci_read_config_byte(pcidev
,0x67,&bTmp
);//check if BIOS Enable Fir
226 if((bTmp
&0x01)==1) { // BIOS enable FIR
227 //Enable Double DMA clock
228 pci_read_config_byte(pcidev
,0x42,&oldPCI_40
);
229 pci_write_config_byte(pcidev
,0x42,oldPCI_40
| 0x80);
230 pci_read_config_byte(pcidev
,0x40,&oldPCI_40
);
231 pci_write_config_byte(pcidev
,0x40,oldPCI_40
& 0xf7);
232 pci_read_config_byte(pcidev
,0x44,&oldPCI_44
);
233 pci_write_config_byte(pcidev
,0x44,0x4e);
234 //---------- read configuration from Function0 of south bridge
236 pci_read_config_byte(pcidev
,0x44,&bTmp1
); //DMA
237 FirDRQ0
= (bTmp1
& 0x30) >> 4;
238 pci_read_config_byte(pcidev
,0x44,&bTmp1
);
239 FirDRQ1
= (bTmp1
& 0xc0) >> 6;
241 pci_read_config_byte(pcidev
,0x44,&bTmp1
); //DMA
242 FirDRQ0
= (bTmp1
& 0x30) >> 4 ;
245 pci_read_config_byte(pcidev
,0x47,&bTmp1
); //IRQ
246 FirIRQ
= bTmp1
& 0x0f;
248 pci_read_config_byte(pcidev
,0x69,&bTmp
);
249 FirIOBase
= bTmp
<< 8;//hight byte
250 pci_read_config_byte(pcidev
,0x68,&bTmp
);
251 FirIOBase
= (FirIOBase
| bTmp
) & 0xfff0;
252 //-------------------------
253 info
.fir_base
=FirIOBase
;
257 if (via_ircc_open(0, &info
,0x3096) == 0)
260 rc
= -ENODEV
; //IR not turn on !!!!!
263 IRDA_DEBUG(2, "%s(): End - rc = %d\n", __func__
, rc
);
268 * Function via_ircc_clean ()
270 * Close all configured chips
273 static void via_ircc_clean(void)
277 IRDA_DEBUG(3, "%s()\n", __func__
);
279 for (i
=0; i
< ARRAY_SIZE(dev_self
); i
++) {
281 via_ircc_close(dev_self
[i
]);
285 static void __devexit
via_remove_one (struct pci_dev
*pdev
)
287 IRDA_DEBUG(3, "%s()\n", __func__
);
289 /* FIXME : This is ugly. We should use pci_get_drvdata(pdev);
290 * to get our driver instance and call directly via_ircc_close().
291 * See vlsi_ir for details...
295 /* FIXME : This should be in via_ircc_close(), because here we may
296 * theoritically disable still configured devices :-( - Jean II */
297 pci_disable_device(pdev
);
300 static void __exit
via_ircc_cleanup(void)
302 IRDA_DEBUG(3, "%s()\n", __func__
);
304 /* FIXME : This should be redundant, as pci_unregister_driver()
305 * should call via_remove_one() on each device.
309 /* Cleanup all instances of the driver */
310 pci_unregister_driver (&via_driver
);
314 * Function via_ircc_open (iobase, irq)
316 * Open driver instance
319 static __devinit
int via_ircc_open(int i
, chipio_t
* info
, unsigned int id
)
321 struct net_device
*dev
;
322 struct via_ircc_cb
*self
;
325 IRDA_DEBUG(3, "%s()\n", __func__
);
327 if (i
>= ARRAY_SIZE(dev_self
))
330 /* Allocate new instance of the driver */
331 dev
= alloc_irdadev(sizeof(struct via_ircc_cb
));
335 self
= netdev_priv(dev
);
337 spin_lock_init(&self
->lock
);
339 /* FIXME : We should store our driver instance in the PCI layer,
340 * using pci_set_drvdata(), not in this array.
341 * See vlsi_ir for details... - Jean II */
342 /* FIXME : 'i' is always 0 (see via_init_one()) :-( - Jean II */
343 /* Need to store self somewhere */
346 /* Initialize Resource */
347 self
->io
.cfg_base
= info
->cfg_base
;
348 self
->io
.fir_base
= info
->fir_base
;
349 self
->io
.irq
= info
->irq
;
350 self
->io
.fir_ext
= CHIP_IO_EXTENT
;
351 self
->io
.dma
= info
->dma
;
352 self
->io
.dma2
= info
->dma2
;
353 self
->io
.fifo_size
= 32;
355 self
->st_fifo
.len
= 0;
356 self
->RxDataReady
= 0;
358 /* Reserve the ioports that we need */
359 if (!request_region(self
->io
.fir_base
, self
->io
.fir_ext
, driver_name
)) {
360 IRDA_DEBUG(0, "%s(), can't get iobase of 0x%03x\n",
361 __func__
, self
->io
.fir_base
);
366 /* Initialize QoS for this device */
367 irda_init_max_qos_capabilies(&self
->qos
);
369 /* Check if user has supplied the dongle id or not */
371 dongle_id
= via_ircc_read_dongle_id(self
->io
.fir_base
);
372 self
->io
.dongle_id
= dongle_id
;
374 /* The only value we must override it the baudrate */
375 /* Maximum speeds and capabilities are dongle-dependant. */
376 switch( self
->io
.dongle_id
){
378 self
->qos
.baud_rate
.bits
=
379 IR_9600
| IR_19200
| IR_38400
| IR_57600
| IR_115200
|
380 IR_576000
| IR_1152000
| (IR_4000000
<< 8);
383 self
->qos
.baud_rate
.bits
=
384 IR_9600
| IR_19200
| IR_38400
| IR_57600
| IR_115200
;
388 /* Following was used for testing:
390 * self->qos.baud_rate.bits = IR_9600;
392 * Is is no good, as it prohibits (error-prone) speed-changes.
395 self
->qos
.min_turn_time
.bits
= qos_mtt_bits
;
396 irda_qos_bits_to_value(&self
->qos
);
398 /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */
399 self
->rx_buff
.truesize
= 14384 + 2048;
400 self
->tx_buff
.truesize
= 14384 + 2048;
402 /* Allocate memory if needed */
404 dma_alloc_coherent(NULL
, self
->rx_buff
.truesize
,
405 &self
->rx_buff_dma
, GFP_KERNEL
);
406 if (self
->rx_buff
.head
== NULL
) {
410 memset(self
->rx_buff
.head
, 0, self
->rx_buff
.truesize
);
413 dma_alloc_coherent(NULL
, self
->tx_buff
.truesize
,
414 &self
->tx_buff_dma
, GFP_KERNEL
);
415 if (self
->tx_buff
.head
== NULL
) {
419 memset(self
->tx_buff
.head
, 0, self
->tx_buff
.truesize
);
421 self
->rx_buff
.in_frame
= FALSE
;
422 self
->rx_buff
.state
= OUTSIDE_FRAME
;
423 self
->tx_buff
.data
= self
->tx_buff
.head
;
424 self
->rx_buff
.data
= self
->rx_buff
.head
;
426 /* Reset Tx queue info */
427 self
->tx_fifo
.len
= self
->tx_fifo
.ptr
= self
->tx_fifo
.free
= 0;
428 self
->tx_fifo
.tail
= self
->tx_buff
.head
;
430 /* Override the network functions we need to use */
431 dev
->hard_start_xmit
= via_ircc_hard_xmit_sir
;
432 dev
->open
= via_ircc_net_open
;
433 dev
->stop
= via_ircc_net_close
;
434 dev
->do_ioctl
= via_ircc_net_ioctl
;
436 err
= register_netdev(dev
);
440 IRDA_MESSAGE("IrDA: Registered device %s (via-ircc)\n", dev
->name
);
442 /* Initialise the hardware..
444 self
->io
.speed
= 9600;
448 dma_free_coherent(NULL
, self
->tx_buff
.truesize
,
449 self
->tx_buff
.head
, self
->tx_buff_dma
);
451 dma_free_coherent(NULL
, self
->rx_buff
.truesize
,
452 self
->rx_buff
.head
, self
->rx_buff_dma
);
454 release_region(self
->io
.fir_base
, self
->io
.fir_ext
);
462 * Function via_ircc_close (self)
464 * Close driver instance
467 static int via_ircc_close(struct via_ircc_cb
*self
)
471 IRDA_DEBUG(3, "%s()\n", __func__
);
473 IRDA_ASSERT(self
!= NULL
, return -1;);
475 iobase
= self
->io
.fir_base
;
477 ResetChip(iobase
, 5); //hardware reset.
478 /* Remove netdevice */
479 unregister_netdev(self
->netdev
);
481 /* Release the PORT that this driver is using */
482 IRDA_DEBUG(2, "%s(), Releasing Region %03x\n",
483 __func__
, self
->io
.fir_base
);
484 release_region(self
->io
.fir_base
, self
->io
.fir_ext
);
485 if (self
->tx_buff
.head
)
486 dma_free_coherent(NULL
, self
->tx_buff
.truesize
,
487 self
->tx_buff
.head
, self
->tx_buff_dma
);
488 if (self
->rx_buff
.head
)
489 dma_free_coherent(NULL
, self
->rx_buff
.truesize
,
490 self
->rx_buff
.head
, self
->rx_buff_dma
);
491 dev_self
[self
->index
] = NULL
;
493 free_netdev(self
->netdev
);
499 * Function via_hw_init(self)
501 * Returns non-negative on success.
503 * Formerly via_ircc_setup
505 static void via_hw_init(struct via_ircc_cb
*self
)
507 int iobase
= self
->io
.fir_base
;
509 IRDA_DEBUG(3, "%s()\n", __func__
);
511 SetMaxRxPacketSize(iobase
, 0x0fff); //set to max:4095
513 EnRXFIFOReadyInt(iobase
, OFF
);
514 EnRXFIFOHalfLevelInt(iobase
, OFF
);
515 EnTXFIFOHalfLevelInt(iobase
, OFF
);
516 EnTXFIFOUnderrunEOMInt(iobase
, ON
);
517 EnTXFIFOReadyInt(iobase
, OFF
);
518 InvertTX(iobase
, OFF
);
519 InvertRX(iobase
, OFF
);
521 if (ReadLPCReg(0x20) == 0x3c)
522 WriteLPCReg(0xF0, 0); // for VT1211
524 EnRXSpecInt(iobase
, ON
);
526 /* The following is basically hwreset */
527 /* If this is the case, why not just call hwreset() ? Jean II */
528 ResetChip(iobase
, 5);
529 EnableDMA(iobase
, OFF
);
530 EnableTX(iobase
, OFF
);
531 EnableRX(iobase
, OFF
);
532 EnRXDMA(iobase
, OFF
);
533 EnTXDMA(iobase
, OFF
);
534 RXStart(iobase
, OFF
);
535 TXStart(iobase
, OFF
);
538 SIRFilter(iobase
, ON
);
542 WriteReg(iobase
, I_ST_CT_0
, 0x00);
543 SetBaudRate(iobase
, 9600);
544 SetPulseWidth(iobase
, 12);
545 SetSendPreambleCount(iobase
, 0);
547 self
->io
.speed
= 9600;
548 self
->st_fifo
.len
= 0;
550 via_ircc_change_dongle_speed(iobase
, self
->io
.speed
,
553 WriteReg(iobase
, I_ST_CT_0
, 0x80);
557 * Function via_ircc_read_dongle_id (void)
560 static int via_ircc_read_dongle_id(int iobase
)
562 int dongle_id
= 9; /* Default to IBM */
564 IRDA_ERROR("via-ircc: dongle probing not supported, please specify dongle_id module parameter.\n");
569 * Function via_ircc_change_dongle_speed (iobase, speed, dongle_id)
570 * Change speed of the attach dongle
571 * only implement two type of dongle currently.
573 static void via_ircc_change_dongle_speed(int iobase
, int speed
,
578 /* speed is unused, as we use IsSIROn()/IsMIROn() */
581 IRDA_DEBUG(1, "%s(): change_dongle_speed to %d for 0x%x, %d\n",
582 __func__
, speed
, iobase
, dongle_id
);
586 /* Note: The dongle_id's listed here are derived from
589 case 0x08: /* HP HSDL-2300, HP HSDL-3600/HSDL-3610 */
590 UseOneRX(iobase
, ON
); // use one RX pin RX1,RX2
591 InvertTX(iobase
, OFF
);
592 InvertRX(iobase
, OFF
);
594 EnRX2(iobase
, ON
); //sir to rx2
595 EnGPIOtoRX2(iobase
, OFF
);
597 if (IsSIROn(iobase
)) { //sir
599 SlowIRRXLowActive(iobase
, ON
);
601 SlowIRRXLowActive(iobase
, OFF
);
603 if (IsMIROn(iobase
)) { //mir
605 SlowIRRXLowActive(iobase
, OFF
);
608 if (IsFIROn(iobase
)) { //fir
610 SlowIRRXLowActive(iobase
, OFF
);
617 case 0x09: /* IBM31T1100 or Temic TFDS6000/TFDS6500 */
618 UseOneRX(iobase
, ON
); //use ONE RX....RX1
619 InvertTX(iobase
, OFF
);
620 InvertRX(iobase
, OFF
); // invert RX pin
623 EnGPIOtoRX2(iobase
, OFF
);
624 if (IsSIROn(iobase
)) { //sir
626 SlowIRRXLowActive(iobase
, ON
);
629 SlowIRRXLowActive(iobase
, OFF
);
631 if (IsMIROn(iobase
)) { //mir
633 SlowIRRXLowActive(iobase
, OFF
);
636 SlowIRRXLowActive(iobase
, ON
);
638 if (IsFIROn(iobase
)) { //fir
640 SlowIRRXLowActive(iobase
, OFF
);
645 SlowIRRXLowActive(iobase
, ON
);
648 WriteTX(iobase
, OFF
);
654 UseOneRX(iobase
, OFF
); // use two RX pin RX1,RX2
655 InvertTX(iobase
, OFF
);
656 InvertRX(iobase
, OFF
);
657 SlowIRRXLowActive(iobase
, OFF
);
658 if (IsSIROn(iobase
)) { //sir
659 EnGPIOtoRX2(iobase
, OFF
);
660 WriteGIO(iobase
, OFF
);
661 EnRX2(iobase
, OFF
); //sir to rx2
663 EnGPIOtoRX2(iobase
, OFF
);
664 WriteGIO(iobase
, OFF
);
665 EnRX2(iobase
, OFF
); //fir to rx
669 case 0x11: /* Temic TFDS4500 */
671 IRDA_DEBUG(2, "%s: Temic TFDS4500: One RX pin, TX normal, RX inverted.\n", __func__
);
673 UseOneRX(iobase
, ON
); //use ONE RX....RX1
674 InvertTX(iobase
, OFF
);
675 InvertRX(iobase
, ON
); // invert RX pin
677 EnRX2(iobase
, ON
); //sir to rx2
678 EnGPIOtoRX2(iobase
, OFF
);
680 if( IsSIROn(iobase
) ){ //sir
683 SlowIRRXLowActive(iobase
, ON
);
686 SlowIRRXLowActive(iobase
, OFF
);
689 IRDA_DEBUG(0, "%s: Warning: TFDS4500 not running in SIR mode !\n", __func__
);
693 case 0x0ff: /* Vishay */
696 else if (IsMIROn(iobase
))
698 else if (IsFIROn(iobase
))
700 else if (IsVFIROn(iobase
))
702 SI_SetMode(iobase
, mode
);
706 IRDA_ERROR("%s: Error: dongle_id %d unsupported !\n",
707 __func__
, dongle_id
);
712 * Function via_ircc_change_speed (self, baud)
714 * Change the speed of the device
717 static void via_ircc_change_speed(struct via_ircc_cb
*self
, __u32 speed
)
719 struct net_device
*dev
= self
->netdev
;
723 iobase
= self
->io
.fir_base
;
724 /* Update accounting for new speed */
725 self
->io
.speed
= speed
;
726 IRDA_DEBUG(1, "%s: change_speed to %d bps.\n", __func__
, speed
);
728 WriteReg(iobase
, I_ST_CT_0
, 0x0);
730 /* Controller mode sellection */
738 value
= (115200/speed
)-1;
743 /* FIXME: this can't be right, as it's the same as 115200,
744 * and 576000 is MIR, not SIR. */
757 SetPulseWidth(iobase
, 0);
758 SetSendPreambleCount(iobase
, 14);
772 /* Set baudrate to 0x19[2..7] */
773 bTmp
= (ReadReg(iobase
, I_CF_H_1
) & 0x03);
775 WriteReg(iobase
, I_CF_H_1
, bTmp
);
777 /* Some dongles may need to be informed about speed changes. */
778 via_ircc_change_dongle_speed(iobase
, speed
, self
->io
.dongle_id
);
780 /* Set FIFO size to 64 */
784 WriteReg(iobase
, I_ST_CT_0
, 0x80);
786 // EnTXFIFOHalfLevelInt(iobase,ON);
788 /* Enable some interrupts so we can receive frames */
789 //EnAllInt(iobase,ON);
791 if (IsSIROn(iobase
)) {
792 SIRFilter(iobase
, ON
);
793 SIRRecvAny(iobase
, ON
);
795 SIRFilter(iobase
, OFF
);
796 SIRRecvAny(iobase
, OFF
);
799 if (speed
> 115200) {
800 /* Install FIR xmit handler */
801 dev
->hard_start_xmit
= via_ircc_hard_xmit_fir
;
802 via_ircc_dma_receive(self
);
804 /* Install SIR xmit handler */
805 dev
->hard_start_xmit
= via_ircc_hard_xmit_sir
;
807 netif_wake_queue(dev
);
811 * Function via_ircc_hard_xmit (skb, dev)
813 * Transmit the frame!
816 static int via_ircc_hard_xmit_sir(struct sk_buff
*skb
,
817 struct net_device
*dev
)
819 struct via_ircc_cb
*self
;
824 self
= netdev_priv(dev
);
825 IRDA_ASSERT(self
!= NULL
, return 0;);
826 iobase
= self
->io
.fir_base
;
828 netif_stop_queue(dev
);
829 /* Check if we need to change the speed */
830 speed
= irda_get_next_speed(skb
);
831 if ((speed
!= self
->io
.speed
) && (speed
!= -1)) {
832 /* Check for empty frame */
834 via_ircc_change_speed(self
, speed
);
835 dev
->trans_start
= jiffies
;
839 self
->new_speed
= speed
;
843 SIRFilter(iobase
, ON
);
847 WriteReg(iobase
, I_ST_CT_0
, 0x00);
849 spin_lock_irqsave(&self
->lock
, flags
);
850 self
->tx_buff
.data
= self
->tx_buff
.head
;
852 async_wrap_skb(skb
, self
->tx_buff
.data
,
853 self
->tx_buff
.truesize
);
855 dev
->stats
.tx_bytes
+= self
->tx_buff
.len
;
856 /* Send this frame with old speed */
857 SetBaudRate(iobase
, self
->io
.speed
);
858 SetPulseWidth(iobase
, 12);
859 SetSendPreambleCount(iobase
, 0);
860 WriteReg(iobase
, I_ST_CT_0
, 0x80);
862 EnableTX(iobase
, ON
);
863 EnableRX(iobase
, OFF
);
865 ResetChip(iobase
, 0);
866 ResetChip(iobase
, 1);
867 ResetChip(iobase
, 2);
868 ResetChip(iobase
, 3);
869 ResetChip(iobase
, 4);
871 EnAllInt(iobase
, ON
);
873 EnRXDMA(iobase
, OFF
);
875 irda_setup_dma(self
->io
.dma
, self
->tx_buff_dma
, self
->tx_buff
.len
,
878 SetSendByte(iobase
, self
->tx_buff
.len
);
879 RXStart(iobase
, OFF
);
882 dev
->trans_start
= jiffies
;
883 spin_unlock_irqrestore(&self
->lock
, flags
);
888 static int via_ircc_hard_xmit_fir(struct sk_buff
*skb
,
889 struct net_device
*dev
)
891 struct via_ircc_cb
*self
;
896 self
= netdev_priv(dev
);
897 iobase
= self
->io
.fir_base
;
899 if (self
->st_fifo
.len
)
901 if (self
->chip_id
== 0x3076)
905 netif_stop_queue(dev
);
906 speed
= irda_get_next_speed(skb
);
907 if ((speed
!= self
->io
.speed
) && (speed
!= -1)) {
909 via_ircc_change_speed(self
, speed
);
910 dev
->trans_start
= jiffies
;
914 self
->new_speed
= speed
;
916 spin_lock_irqsave(&self
->lock
, flags
);
917 self
->tx_fifo
.queue
[self
->tx_fifo
.free
].start
= self
->tx_fifo
.tail
;
918 self
->tx_fifo
.queue
[self
->tx_fifo
.free
].len
= skb
->len
;
920 self
->tx_fifo
.tail
+= skb
->len
;
921 dev
->stats
.tx_bytes
+= skb
->len
;
922 skb_copy_from_linear_data(skb
,
923 self
->tx_fifo
.queue
[self
->tx_fifo
.free
].start
, skb
->len
);
925 self
->tx_fifo
.free
++;
926 //F01 if (self->tx_fifo.len == 1) {
927 via_ircc_dma_xmit(self
, iobase
);
929 //F01 if (self->tx_fifo.free < (MAX_TX_WINDOW -1 )) netif_wake_queue(self->netdev);
930 dev
->trans_start
= jiffies
;
932 spin_unlock_irqrestore(&self
->lock
, flags
);
937 static int via_ircc_dma_xmit(struct via_ircc_cb
*self
, u16 iobase
)
939 EnTXDMA(iobase
, OFF
);
940 self
->io
.direction
= IO_XMIT
;
942 EnableTX(iobase
, ON
);
943 EnableRX(iobase
, OFF
);
944 ResetChip(iobase
, 0);
945 ResetChip(iobase
, 1);
946 ResetChip(iobase
, 2);
947 ResetChip(iobase
, 3);
948 ResetChip(iobase
, 4);
949 EnAllInt(iobase
, ON
);
951 EnRXDMA(iobase
, OFF
);
952 irda_setup_dma(self
->io
.dma
,
953 ((u8
*)self
->tx_fifo
.queue
[self
->tx_fifo
.ptr
].start
-
954 self
->tx_buff
.head
) + self
->tx_buff_dma
,
955 self
->tx_fifo
.queue
[self
->tx_fifo
.ptr
].len
, DMA_TX_MODE
);
956 IRDA_DEBUG(1, "%s: tx_fifo.ptr=%x,len=%x,tx_fifo.len=%x..\n",
957 __func__
, self
->tx_fifo
.ptr
,
958 self
->tx_fifo
.queue
[self
->tx_fifo
.ptr
].len
,
961 SetSendByte(iobase
, self
->tx_fifo
.queue
[self
->tx_fifo
.ptr
].len
);
962 RXStart(iobase
, OFF
);
969 * Function via_ircc_dma_xmit_complete (self)
971 * The transfer of a frame in finished. This function will only be called
972 * by the interrupt handler
975 static int via_ircc_dma_xmit_complete(struct via_ircc_cb
*self
)
981 IRDA_DEBUG(3, "%s()\n", __func__
);
983 iobase
= self
->io
.fir_base
;
985 // DisableDmaChannel(self->io.dma);
986 /* Check for underrrun! */
987 /* Clear bit, by writing 1 into it */
988 Tx_status
= GetTXStatus(iobase
);
989 if (Tx_status
& 0x08) {
990 self
->netdev
->stats
.tx_errors
++;
991 self
->netdev
->stats
.tx_fifo_errors
++;
993 // how to clear underrrun ?
995 self
->netdev
->stats
.tx_packets
++;
996 ResetChip(iobase
, 3);
997 ResetChip(iobase
, 4);
999 /* Check if we need to change the speed */
1000 if (self
->new_speed
) {
1001 via_ircc_change_speed(self
, self
->new_speed
);
1002 self
->new_speed
= 0;
1005 /* Finished with this frame, so prepare for next */
1006 if (IsFIROn(iobase
)) {
1007 if (self
->tx_fifo
.len
) {
1008 self
->tx_fifo
.len
--;
1009 self
->tx_fifo
.ptr
++;
1013 "%s: tx_fifo.len=%x ,tx_fifo.ptr=%x,tx_fifo.free=%x...\n",
1015 self
->tx_fifo
.len
, self
->tx_fifo
.ptr
, self
->tx_fifo
.free
);
1017 // Any frames to be sent back-to-back?
1018 if (self->tx_fifo.len) {
1019 // Not finished yet!
1020 via_ircc_dma_xmit(self, iobase);
1024 // Reset Tx FIFO info
1025 self
->tx_fifo
.len
= self
->tx_fifo
.ptr
= self
->tx_fifo
.free
= 0;
1026 self
->tx_fifo
.tail
= self
->tx_buff
.head
;
1029 // Make sure we have room for more frames
1030 //F01 if (self->tx_fifo.free < (MAX_TX_WINDOW -1 )) {
1031 // Not busy transmitting anymore
1032 // Tell the network layer, that we can accept more frames
1033 netif_wake_queue(self
->netdev
);
1039 * Function via_ircc_dma_receive (self)
1041 * Set configuration for receive a frame.
1044 static int via_ircc_dma_receive(struct via_ircc_cb
*self
)
1048 iobase
= self
->io
.fir_base
;
1050 IRDA_DEBUG(3, "%s()\n", __func__
);
1052 self
->tx_fifo
.len
= self
->tx_fifo
.ptr
= self
->tx_fifo
.free
= 0;
1053 self
->tx_fifo
.tail
= self
->tx_buff
.head
;
1054 self
->RxDataReady
= 0;
1055 self
->io
.direction
= IO_RECV
;
1056 self
->rx_buff
.data
= self
->rx_buff
.head
;
1057 self
->st_fifo
.len
= self
->st_fifo
.pending_bytes
= 0;
1058 self
->st_fifo
.tail
= self
->st_fifo
.head
= 0;
1061 EnableTX(iobase
, OFF
);
1062 EnableRX(iobase
, ON
);
1064 ResetChip(iobase
, 0);
1065 ResetChip(iobase
, 1);
1066 ResetChip(iobase
, 2);
1067 ResetChip(iobase
, 3);
1068 ResetChip(iobase
, 4);
1070 EnAllInt(iobase
, ON
);
1071 EnTXDMA(iobase
, OFF
);
1072 EnRXDMA(iobase
, ON
);
1073 irda_setup_dma(self
->io
.dma2
, self
->rx_buff_dma
,
1074 self
->rx_buff
.truesize
, DMA_RX_MODE
);
1075 TXStart(iobase
, OFF
);
1076 RXStart(iobase
, ON
);
1082 * Function via_ircc_dma_receive_complete (self)
1084 * Controller Finished with receiving frames,
1085 * and this routine is call by ISR
1088 static int via_ircc_dma_receive_complete(struct via_ircc_cb
*self
,
1091 struct st_fifo
*st_fifo
;
1092 struct sk_buff
*skb
;
1096 iobase
= self
->io
.fir_base
;
1097 st_fifo
= &self
->st_fifo
;
1099 if (self
->io
.speed
< 4000000) { //Speed below FIR
1100 len
= GetRecvByte(iobase
, self
);
1101 skb
= dev_alloc_skb(len
+ 1);
1104 // Make sure IP header gets aligned
1105 skb_reserve(skb
, 1);
1106 skb_put(skb
, len
- 2);
1107 if (self
->chip_id
== 0x3076) {
1108 for (i
= 0; i
< len
- 2; i
++)
1109 skb
->data
[i
] = self
->rx_buff
.data
[i
* 2];
1111 if (self
->chip_id
== 0x3096) {
1112 for (i
= 0; i
< len
- 2; i
++)
1114 self
->rx_buff
.data
[i
];
1117 // Move to next frame
1118 self
->rx_buff
.data
+= len
;
1119 self
->netdev
->stats
.rx_bytes
+= len
;
1120 self
->netdev
->stats
.rx_packets
++;
1121 skb
->dev
= self
->netdev
;
1122 skb_reset_mac_header(skb
);
1123 skb
->protocol
= htons(ETH_P_IRDA
);
1129 len
= GetRecvByte(iobase
, self
);
1131 return TRUE
; //interrupt only, data maybe move by RxT
1132 if (((len
- 4) < 2) || ((len
- 4) > 2048)) {
1133 IRDA_DEBUG(1, "%s(): Trouble:len=%x,CurCount=%x,LastCount=%x..\n",
1134 __func__
, len
, RxCurCount(iobase
, self
),
1139 IRDA_DEBUG(2, "%s(): fifo.len=%x,len=%x,CurCount=%x..\n",
1141 st_fifo
->len
, len
- 4, RxCurCount(iobase
, self
));
1143 st_fifo
->entries
[st_fifo
->tail
].status
= status
;
1144 st_fifo
->entries
[st_fifo
->tail
].len
= len
;
1145 st_fifo
->pending_bytes
+= len
;
1148 if (st_fifo
->tail
> MAX_RX_WINDOW
)
1150 self
->RxDataReady
= 0;
1152 // It maybe have MAX_RX_WINDOW package receive by
1153 // receive_complete before Timer IRQ
1155 if (st_fifo->len < (MAX_RX_WINDOW+2 )) {
1161 EnableRX(iobase
, OFF
);
1162 EnRXDMA(iobase
, OFF
);
1163 RXStart(iobase
, OFF
);
1165 // Put this entry back in fifo
1166 if (st_fifo
->head
> MAX_RX_WINDOW
)
1168 status
= st_fifo
->entries
[st_fifo
->head
].status
;
1169 len
= st_fifo
->entries
[st_fifo
->head
].len
;
1173 skb
= dev_alloc_skb(len
+ 1 - 4);
1175 * if frame size,data ptr,or skb ptr are wrong ,the get next
1178 if ((skb
== NULL
) || (skb
->data
== NULL
)
1179 || (self
->rx_buff
.data
== NULL
) || (len
< 6)) {
1180 self
->netdev
->stats
.rx_dropped
++;
1183 skb_reserve(skb
, 1);
1184 skb_put(skb
, len
- 4);
1186 skb_copy_to_linear_data(skb
, self
->rx_buff
.data
, len
- 4);
1187 IRDA_DEBUG(2, "%s(): len=%x.rx_buff=%p\n", __func__
,
1188 len
- 4, self
->rx_buff
.data
);
1190 // Move to next frame
1191 self
->rx_buff
.data
+= len
;
1192 self
->netdev
->stats
.rx_bytes
+= len
;
1193 self
->netdev
->stats
.rx_packets
++;
1194 skb
->dev
= self
->netdev
;
1195 skb_reset_mac_header(skb
);
1196 skb
->protocol
= htons(ETH_P_IRDA
);
1206 * if frame is received , but no INT ,then use this routine to upload frame.
1208 static int upload_rxdata(struct via_ircc_cb
*self
, int iobase
)
1210 struct sk_buff
*skb
;
1212 struct st_fifo
*st_fifo
;
1213 st_fifo
= &self
->st_fifo
;
1215 len
= GetRecvByte(iobase
, self
);
1217 IRDA_DEBUG(2, "%s(): len=%x\n", __func__
, len
);
1219 if ((len
- 4) < 2) {
1220 self
->netdev
->stats
.rx_dropped
++;
1224 skb
= dev_alloc_skb(len
+ 1);
1226 self
->netdev
->stats
.rx_dropped
++;
1229 skb_reserve(skb
, 1);
1230 skb_put(skb
, len
- 4 + 1);
1231 skb_copy_to_linear_data(skb
, self
->rx_buff
.data
, len
- 4 + 1);
1234 if (st_fifo
->tail
> MAX_RX_WINDOW
)
1236 // Move to next frame
1237 self
->rx_buff
.data
+= len
;
1238 self
->netdev
->stats
.rx_bytes
+= len
;
1239 self
->netdev
->stats
.rx_packets
++;
1240 skb
->dev
= self
->netdev
;
1241 skb_reset_mac_header(skb
);
1242 skb
->protocol
= htons(ETH_P_IRDA
);
1244 if (st_fifo
->len
< (MAX_RX_WINDOW
+ 2)) {
1245 RXStart(iobase
, ON
);
1247 EnableRX(iobase
, OFF
);
1248 EnRXDMA(iobase
, OFF
);
1249 RXStart(iobase
, OFF
);
1255 * Implement back to back receive , use this routine to upload data.
1258 static int RxTimerHandler(struct via_ircc_cb
*self
, int iobase
)
1260 struct st_fifo
*st_fifo
;
1261 struct sk_buff
*skb
;
1265 st_fifo
= &self
->st_fifo
;
1267 if (CkRxRecv(iobase
, self
)) {
1268 // if still receiving ,then return ,don't upload frame
1269 self
->RetryCount
= 0;
1270 SetTimer(iobase
, 20);
1271 self
->RxDataReady
++;
1276 if ((self
->RetryCount
>= 1) ||
1277 ((st_fifo
->pending_bytes
+ 2048) > self
->rx_buff
.truesize
)
1278 || (st_fifo
->len
>= (MAX_RX_WINDOW
))) {
1279 while (st_fifo
->len
> 0) { //upload frame
1280 // Put this entry back in fifo
1281 if (st_fifo
->head
> MAX_RX_WINDOW
)
1283 status
= st_fifo
->entries
[st_fifo
->head
].status
;
1284 len
= st_fifo
->entries
[st_fifo
->head
].len
;
1288 skb
= dev_alloc_skb(len
+ 1 - 4);
1290 * if frame size, data ptr, or skb ptr are wrong,
1291 * then get next entry.
1293 if ((skb
== NULL
) || (skb
->data
== NULL
)
1294 || (self
->rx_buff
.data
== NULL
) || (len
< 6)) {
1295 self
->netdev
->stats
.rx_dropped
++;
1298 skb_reserve(skb
, 1);
1299 skb_put(skb
, len
- 4);
1300 skb_copy_to_linear_data(skb
, self
->rx_buff
.data
, len
- 4);
1302 IRDA_DEBUG(2, "%s(): len=%x.head=%x\n", __func__
,
1303 len
- 4, st_fifo
->head
);
1305 // Move to next frame
1306 self
->rx_buff
.data
+= len
;
1307 self
->netdev
->stats
.rx_bytes
+= len
;
1308 self
->netdev
->stats
.rx_packets
++;
1309 skb
->dev
= self
->netdev
;
1310 skb_reset_mac_header(skb
);
1311 skb
->protocol
= htons(ETH_P_IRDA
);
1314 self
->RetryCount
= 0;
1317 "%s(): End of upload HostStatus=%x,RxStatus=%x\n",
1319 GetHostStatus(iobase
), GetRXStatus(iobase
));
1322 * if frame is receive complete at this routine ,then upload
1325 if ((GetRXStatus(iobase
) & 0x10)
1326 && (RxCurCount(iobase
, self
) != self
->RxLastCount
)) {
1327 upload_rxdata(self
, iobase
);
1328 if (irda_device_txqueue_empty(self
->netdev
))
1329 via_ircc_dma_receive(self
);
1331 } // timer detect complete
1333 SetTimer(iobase
, 4);
1341 * Function via_ircc_interrupt (irq, dev_id)
1343 * An interrupt from the chip has arrived. Time to do some work
1346 static irqreturn_t
via_ircc_interrupt(int dummy
, void *dev_id
)
1348 struct net_device
*dev
= dev_id
;
1349 struct via_ircc_cb
*self
= netdev_priv(dev
);
1351 u8 iHostIntType
, iRxIntType
, iTxIntType
;
1353 iobase
= self
->io
.fir_base
;
1354 spin_lock(&self
->lock
);
1355 iHostIntType
= GetHostStatus(iobase
);
1357 IRDA_DEBUG(4, "%s(): iHostIntType %02x: %s %s %s %02x\n",
1358 __func__
, iHostIntType
,
1359 (iHostIntType
& 0x40) ? "Timer" : "",
1360 (iHostIntType
& 0x20) ? "Tx" : "",
1361 (iHostIntType
& 0x10) ? "Rx" : "",
1362 (iHostIntType
& 0x0e) >> 1);
1364 if ((iHostIntType
& 0x40) != 0) { //Timer Event
1365 self
->EventFlag
.TimeOut
++;
1366 ClearTimerInt(iobase
, 1);
1367 if (self
->io
.direction
== IO_XMIT
) {
1368 via_ircc_dma_xmit(self
, iobase
);
1370 if (self
->io
.direction
== IO_RECV
) {
1372 * frame ready hold too long, must reset.
1374 if (self
->RxDataReady
> 30) {
1376 if (irda_device_txqueue_empty(self
->netdev
)) {
1377 via_ircc_dma_receive(self
);
1379 } else { // call this to upload frame.
1380 RxTimerHandler(self
, iobase
);
1384 if ((iHostIntType
& 0x20) != 0) { //Tx Event
1385 iTxIntType
= GetTXStatus(iobase
);
1387 IRDA_DEBUG(4, "%s(): iTxIntType %02x: %s %s %s %s\n",
1388 __func__
, iTxIntType
,
1389 (iTxIntType
& 0x08) ? "FIFO underr." : "",
1390 (iTxIntType
& 0x04) ? "EOM" : "",
1391 (iTxIntType
& 0x02) ? "FIFO ready" : "",
1392 (iTxIntType
& 0x01) ? "Early EOM" : "");
1394 if (iTxIntType
& 0x4) {
1395 self
->EventFlag
.EOMessage
++; // read and will auto clean
1396 if (via_ircc_dma_xmit_complete(self
)) {
1397 if (irda_device_txqueue_empty
1399 via_ircc_dma_receive(self
);
1402 self
->EventFlag
.Unknown
++;
1406 //----------------------------------------
1407 if ((iHostIntType
& 0x10) != 0) { //Rx Event
1408 /* Check if DMA has finished */
1409 iRxIntType
= GetRXStatus(iobase
);
1411 IRDA_DEBUG(4, "%s(): iRxIntType %02x: %s %s %s %s %s %s %s\n",
1412 __func__
, iRxIntType
,
1413 (iRxIntType
& 0x80) ? "PHY err." : "",
1414 (iRxIntType
& 0x40) ? "CRC err" : "",
1415 (iRxIntType
& 0x20) ? "FIFO overr." : "",
1416 (iRxIntType
& 0x10) ? "EOF" : "",
1417 (iRxIntType
& 0x08) ? "RxData" : "",
1418 (iRxIntType
& 0x02) ? "RxMaxLen" : "",
1419 (iRxIntType
& 0x01) ? "SIR bad" : "");
1421 IRDA_DEBUG(3, "%s(): RxIRQ =0\n", __func__
);
1423 if (iRxIntType
& 0x10) {
1424 if (via_ircc_dma_receive_complete(self
, iobase
)) {
1425 //F01 if(!(IsFIROn(iobase))) via_ircc_dma_receive(self);
1426 via_ircc_dma_receive(self
);
1430 IRDA_DEBUG(4, "%s(): RxIRQ ERR:iRxIntType=%x,HostIntType=%x,CurCount=%x,RxLastCount=%x_____\n",
1431 __func__
, iRxIntType
, iHostIntType
,
1432 RxCurCount(iobase
, self
),
1435 if (iRxIntType
& 0x20) { //FIFO OverRun ERR
1436 ResetChip(iobase
, 0);
1437 ResetChip(iobase
, 1);
1438 } else { //PHY,CRC ERR
1440 if (iRxIntType
!= 0x08)
1441 hwreset(self
); //F01
1443 via_ircc_dma_receive(self
);
1447 spin_unlock(&self
->lock
);
1448 return IRQ_RETVAL(iHostIntType
);
1451 static void hwreset(struct via_ircc_cb
*self
)
1454 iobase
= self
->io
.fir_base
;
1456 IRDA_DEBUG(3, "%s()\n", __func__
);
1458 ResetChip(iobase
, 5);
1459 EnableDMA(iobase
, OFF
);
1460 EnableTX(iobase
, OFF
);
1461 EnableRX(iobase
, OFF
);
1462 EnRXDMA(iobase
, OFF
);
1463 EnTXDMA(iobase
, OFF
);
1464 RXStart(iobase
, OFF
);
1465 TXStart(iobase
, OFF
);
1468 SIRFilter(iobase
, ON
);
1472 WriteReg(iobase
, I_ST_CT_0
, 0x00);
1473 SetBaudRate(iobase
, 9600);
1474 SetPulseWidth(iobase
, 12);
1475 SetSendPreambleCount(iobase
, 0);
1476 WriteReg(iobase
, I_ST_CT_0
, 0x80);
1478 /* Restore speed. */
1479 via_ircc_change_speed(self
, self
->io
.speed
);
1481 self
->st_fifo
.len
= 0;
1485 * Function via_ircc_is_receiving (self)
1487 * Return TRUE is we are currently receiving a frame
1490 static int via_ircc_is_receiving(struct via_ircc_cb
*self
)
1495 IRDA_ASSERT(self
!= NULL
, return FALSE
;);
1497 iobase
= self
->io
.fir_base
;
1498 if (CkRxRecv(iobase
, self
))
1501 IRDA_DEBUG(2, "%s(): status=%x....\n", __func__
, status
);
1508 * Function via_ircc_net_open (dev)
1513 static int via_ircc_net_open(struct net_device
*dev
)
1515 struct via_ircc_cb
*self
;
1519 IRDA_DEBUG(3, "%s()\n", __func__
);
1521 IRDA_ASSERT(dev
!= NULL
, return -1;);
1522 self
= netdev_priv(dev
);
1523 dev
->stats
.rx_packets
= 0;
1524 IRDA_ASSERT(self
!= NULL
, return 0;);
1525 iobase
= self
->io
.fir_base
;
1526 if (request_irq(self
->io
.irq
, via_ircc_interrupt
, 0, dev
->name
, dev
)) {
1527 IRDA_WARNING("%s, unable to allocate irq=%d\n", driver_name
,
1532 * Always allocate the DMA channel after the IRQ, and clean up on
1535 if (request_dma(self
->io
.dma
, dev
->name
)) {
1536 IRDA_WARNING("%s, unable to allocate dma=%d\n", driver_name
,
1538 free_irq(self
->io
.irq
, self
);
1541 if (self
->io
.dma2
!= self
->io
.dma
) {
1542 if (request_dma(self
->io
.dma2
, dev
->name
)) {
1543 IRDA_WARNING("%s, unable to allocate dma2=%d\n",
1544 driver_name
, self
->io
.dma2
);
1545 free_irq(self
->io
.irq
, self
);
1546 free_dma(self
->io
.dma
);
1552 /* turn on interrupts */
1553 EnAllInt(iobase
, ON
);
1554 EnInternalLoop(iobase
, OFF
);
1555 EnExternalLoop(iobase
, OFF
);
1558 via_ircc_dma_receive(self
);
1560 /* Ready to play! */
1561 netif_start_queue(dev
);
1564 * Open new IrLAP layer instance, now that everything should be
1565 * initialized properly
1567 sprintf(hwname
, "VIA @ 0x%x", iobase
);
1568 self
->irlap
= irlap_open(dev
, &self
->qos
, hwname
);
1570 self
->RxLastCount
= 0;
1576 * Function via_ircc_net_close (dev)
1581 static int via_ircc_net_close(struct net_device
*dev
)
1583 struct via_ircc_cb
*self
;
1586 IRDA_DEBUG(3, "%s()\n", __func__
);
1588 IRDA_ASSERT(dev
!= NULL
, return -1;);
1589 self
= netdev_priv(dev
);
1590 IRDA_ASSERT(self
!= NULL
, return 0;);
1593 netif_stop_queue(dev
);
1594 /* Stop and remove instance of IrLAP */
1596 irlap_close(self
->irlap
);
1598 iobase
= self
->io
.fir_base
;
1599 EnTXDMA(iobase
, OFF
);
1600 EnRXDMA(iobase
, OFF
);
1601 DisableDmaChannel(self
->io
.dma
);
1603 /* Disable interrupts */
1604 EnAllInt(iobase
, OFF
);
1605 free_irq(self
->io
.irq
, dev
);
1606 free_dma(self
->io
.dma
);
1607 if (self
->io
.dma2
!= self
->io
.dma
)
1608 free_dma(self
->io
.dma2
);
1614 * Function via_ircc_net_ioctl (dev, rq, cmd)
1616 * Process IOCTL commands for this device
1619 static int via_ircc_net_ioctl(struct net_device
*dev
, struct ifreq
*rq
,
1622 struct if_irda_req
*irq
= (struct if_irda_req
*) rq
;
1623 struct via_ircc_cb
*self
;
1624 unsigned long flags
;
1627 IRDA_ASSERT(dev
!= NULL
, return -1;);
1628 self
= netdev_priv(dev
);
1629 IRDA_ASSERT(self
!= NULL
, return -1;);
1630 IRDA_DEBUG(1, "%s(), %s, (cmd=0x%X)\n", __func__
, dev
->name
,
1632 /* Disable interrupts & save flags */
1633 spin_lock_irqsave(&self
->lock
, flags
);
1635 case SIOCSBANDWIDTH
: /* Set bandwidth */
1636 if (!capable(CAP_NET_ADMIN
)) {
1640 via_ircc_change_speed(self
, irq
->ifr_baudrate
);
1642 case SIOCSMEDIABUSY
: /* Set media busy */
1643 if (!capable(CAP_NET_ADMIN
)) {
1647 irda_device_set_media_busy(self
->netdev
, TRUE
);
1649 case SIOCGRECEIVING
: /* Check if we are receiving right now */
1650 irq
->ifr_receiving
= via_ircc_is_receiving(self
);
1656 spin_unlock_irqrestore(&self
->lock
, flags
);
1660 MODULE_AUTHOR("VIA Technologies,inc");
1661 MODULE_DESCRIPTION("VIA IrDA Device Driver");
1662 MODULE_LICENSE("GPL");
1664 module_init(via_ircc_init
);
1665 module_exit(via_ircc_cleanup
);