1 /*********************************************************************
5 * Description: Driver for the NSC PC'108 and PC'338 IrDA chipsets
7 * Author: Dag Brattli <dagb@cs.uit.no>
8 * Created at: Sat Nov 7 21:43:15 1998
9 * Modified at: Wed Mar 1 11:29:34 2000
10 * Modified by: Dag Brattli <dagb@cs.uit.no>
12 * Copyright (c) 1998-2000 Dag Brattli <dagb@cs.uit.no>
13 * Copyright (c) 1998 Lichen Wang, <lwang@actisys.com>
14 * Copyright (c) 1998 Actisys Corp., www.actisys.com
15 * Copyright (c) 2000-2004 Jean Tourrilhes <jt@hpl.hp.com>
18 * This program is free software; you can redistribute it and/or
19 * modify it under the terms of the GNU General Public License as
20 * published by the Free Software Foundation; either version 2 of
21 * the License, or (at your option) any later version.
23 * Neither Dag Brattli nor University of Tromsø admit liability nor
24 * provide warranty for any of this software. This material is
25 * provided "AS-IS" and at no charge.
27 * Notice that all functions that needs to access the chip in _any_
28 * way, must save BSR register on entry, and restore it on exit.
29 * It is _very_ important to follow this policy!
33 * bank = inb(iobase+BSR);
35 * do_your_stuff_here();
37 * outb(bank, iobase+BSR);
39 * If you find bugs in this file, its very likely that the same bug
40 * will also be in w83977af_ir.c since the implementations are quite
43 ********************************************************************/
45 #include <linux/module.h>
46 #include <linux/gfp.h>
48 #include <linux/kernel.h>
49 #include <linux/types.h>
50 #include <linux/skbuff.h>
51 #include <linux/netdevice.h>
52 #include <linux/ioport.h>
53 #include <linux/delay.h>
54 #include <linux/init.h>
55 #include <linux/interrupt.h>
56 #include <linux/rtnetlink.h>
57 #include <linux/dma-mapping.h>
58 #include <linux/pnp.h>
59 #include <linux/platform_device.h>
63 #include <asm/byteorder.h>
65 #include <net/irda/wrapper.h>
66 #include <net/irda/irda.h>
67 #include <net/irda/irda_device.h>
71 #define CHIP_IO_EXTENT 8
72 #define BROKEN_DONGLE_ID
74 static char *driver_name
= "nsc-ircc";
76 /* Power Management */
77 #define NSC_IRCC_DRIVER_NAME "nsc-ircc"
78 static int nsc_ircc_suspend(struct platform_device
*dev
, pm_message_t state
);
79 static int nsc_ircc_resume(struct platform_device
*dev
);
81 static struct platform_driver nsc_ircc_driver
= {
82 .suspend
= nsc_ircc_suspend
,
83 .resume
= nsc_ircc_resume
,
85 .name
= NSC_IRCC_DRIVER_NAME
,
89 /* Module parameters */
90 static int qos_mtt_bits
= 0x07; /* 1 ms or more */
93 /* Use BIOS settions by default, but user may supply module parameters */
94 static unsigned int io
[] = { ~0, ~0, ~0, ~0, ~0 };
95 static unsigned int irq
[] = { 0, 0, 0, 0, 0 };
96 static unsigned int dma
[] = { 0, 0, 0, 0, 0 };
98 static int nsc_ircc_probe_108(nsc_chip_t
*chip
, chipio_t
*info
);
99 static int nsc_ircc_probe_338(nsc_chip_t
*chip
, chipio_t
*info
);
100 static int nsc_ircc_probe_39x(nsc_chip_t
*chip
, chipio_t
*info
);
101 static int nsc_ircc_init_108(nsc_chip_t
*chip
, chipio_t
*info
);
102 static int nsc_ircc_init_338(nsc_chip_t
*chip
, chipio_t
*info
);
103 static int nsc_ircc_init_39x(nsc_chip_t
*chip
, chipio_t
*info
);
105 static int nsc_ircc_pnp_probe(struct pnp_dev
*dev
, const struct pnp_device_id
*id
);
108 /* These are the known NSC chips */
109 static nsc_chip_t chips
[] = {
110 /* Name, {cfg registers}, chip id index reg, chip id expected value, revision mask */
111 { "PC87108", { 0x150, 0x398, 0xea }, 0x05, 0x10, 0xf0,
112 nsc_ircc_probe_108
, nsc_ircc_init_108
},
113 { "PC87338", { 0x398, 0x15c, 0x2e }, 0x08, 0xb0, 0xf8,
114 nsc_ircc_probe_338
, nsc_ircc_init_338
},
115 /* Contributed by Steffen Pingel - IBM X40 */
116 { "PC8738x", { 0x164e, 0x4e, 0x2e }, 0x20, 0xf4, 0xff,
117 nsc_ircc_probe_39x
, nsc_ircc_init_39x
},
118 /* Contributed by Jan Frey - IBM A30/A31 */
119 { "PC8739x", { 0x2e, 0x4e, 0x0 }, 0x20, 0xea, 0xff,
120 nsc_ircc_probe_39x
, nsc_ircc_init_39x
},
121 /* IBM ThinkPads using PC8738x (T60/X60/Z60) */
122 { "IBM-PC8738x", { 0x2e, 0x4e, 0x0 }, 0x20, 0xf4, 0xff,
123 nsc_ircc_probe_39x
, nsc_ircc_init_39x
},
124 /* IBM ThinkPads using PC8394T (T43/R52/?) */
125 { "IBM-PC8394T", { 0x2e, 0x4e, 0x0 }, 0x20, 0xf9, 0xff,
126 nsc_ircc_probe_39x
, nsc_ircc_init_39x
},
130 static struct nsc_ircc_cb
*dev_self
[] = { NULL
, NULL
, NULL
, NULL
, NULL
};
132 static char *dongle_types
[] = {
133 "Differential serial interface",
134 "Differential serial interface",
139 "Single-ended serial interface",
141 "HP HSDL-2300, HP HSDL-3600/HSDL-3610",
142 "IBM31T1100 or Temic TFDS6000/TFDS6500",
145 "HP HSDL-1100/HSDL-2100",
146 "HP HSDL-1100/HSDL-2100",
147 "Supports SIR Mode only",
148 "No dongle connected",
152 static chipio_t pnp_info
;
153 static const struct pnp_device_id nsc_ircc_pnp_table
[] = {
154 { .id
= "NSC6001", .driver_data
= 0 },
155 { .id
= "HWPC224", .driver_data
= 0 },
156 { .id
= "IBM0071", .driver_data
= NSC_FORCE_DONGLE_TYPE9
},
160 MODULE_DEVICE_TABLE(pnp
, nsc_ircc_pnp_table
);
162 static struct pnp_driver nsc_ircc_pnp_driver
= {
165 .id_table
= nsc_ircc_pnp_table
,
166 .probe
= nsc_ircc_pnp_probe
,
170 /* Some prototypes */
171 static int nsc_ircc_open(chipio_t
*info
);
172 static int nsc_ircc_close(struct nsc_ircc_cb
*self
);
173 static int nsc_ircc_setup(chipio_t
*info
);
174 static void nsc_ircc_pio_receive(struct nsc_ircc_cb
*self
);
175 static int nsc_ircc_dma_receive(struct nsc_ircc_cb
*self
);
176 static int nsc_ircc_dma_receive_complete(struct nsc_ircc_cb
*self
, int iobase
);
177 static netdev_tx_t
nsc_ircc_hard_xmit_sir(struct sk_buff
*skb
,
178 struct net_device
*dev
);
179 static netdev_tx_t
nsc_ircc_hard_xmit_fir(struct sk_buff
*skb
,
180 struct net_device
*dev
);
181 static int nsc_ircc_pio_write(int iobase
, __u8
*buf
, int len
, int fifo_size
);
182 static void nsc_ircc_dma_xmit(struct nsc_ircc_cb
*self
, int iobase
);
183 static __u8
nsc_ircc_change_speed(struct nsc_ircc_cb
*self
, __u32 baud
);
184 static int nsc_ircc_is_receiving(struct nsc_ircc_cb
*self
);
185 static int nsc_ircc_read_dongle_id (int iobase
);
186 static void nsc_ircc_init_dongle_interface (int iobase
, int dongle_id
);
188 static int nsc_ircc_net_open(struct net_device
*dev
);
189 static int nsc_ircc_net_close(struct net_device
*dev
);
190 static int nsc_ircc_net_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
);
193 static int pnp_registered
;
194 static int pnp_succeeded
;
197 * Function nsc_ircc_init ()
199 * Initialize chip. Just try to find out how many chips we are dealing with
202 static int __init
nsc_ircc_init(void)
212 ret
= platform_driver_register(&nsc_ircc_driver
);
214 IRDA_ERROR("%s, Can't register driver!\n", driver_name
);
218 /* Register with PnP subsystem to detect disable ports */
219 ret
= pnp_register_driver(&nsc_ircc_pnp_driver
);
226 /* Probe for all the NSC chipsets we know about */
227 for (chip
= chips
; chip
->name
; chip
++) {
228 IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __func__
,
231 /* Try all config registers for this chip */
232 for (cfg
= 0; cfg
< ARRAY_SIZE(chip
->cfg
); cfg
++) {
233 cfg_base
= chip
->cfg
[cfg
];
237 /* Read index register */
240 IRDA_DEBUG(2, "%s() no chip at 0x%03x\n", __func__
, cfg_base
);
244 /* Read chip identification register */
245 outb(chip
->cid_index
, cfg_base
);
246 id
= inb(cfg_base
+1);
247 if ((id
& chip
->cid_mask
) == chip
->cid_value
) {
248 IRDA_DEBUG(2, "%s() Found %s chip, revision=%d\n",
249 __func__
, chip
->name
, id
& ~chip
->cid_mask
);
252 * If we found a correct PnP setting,
256 memset(&info
, 0, sizeof(chipio_t
));
257 info
.cfg_base
= cfg_base
;
258 info
.fir_base
= pnp_info
.fir_base
;
259 info
.dma
= pnp_info
.dma
;
260 info
.irq
= pnp_info
.irq
;
262 if (info
.fir_base
< 0x2000) {
263 IRDA_MESSAGE("%s, chip->init\n", driver_name
);
264 chip
->init(chip
, &info
);
266 chip
->probe(chip
, &info
);
268 if (nsc_ircc_open(&info
) >= 0)
273 * Opening based on PnP values failed.
274 * Let's fallback to user values, or probe
278 IRDA_DEBUG(2, "%s, PnP init failed\n", driver_name
);
279 memset(&info
, 0, sizeof(chipio_t
));
280 info
.cfg_base
= cfg_base
;
281 info
.fir_base
= io
[i
];
286 * If the user supplies the base address, then
287 * we init the chip, if not we probe the values
290 if (io
[i
] < 0x2000) {
291 chip
->init(chip
, &info
);
293 chip
->probe(chip
, &info
);
295 if (nsc_ircc_open(&info
) >= 0)
300 IRDA_DEBUG(2, "%s(), Wrong chip id=0x%02x\n", __func__
, id
);
306 platform_driver_unregister(&nsc_ircc_driver
);
307 pnp_unregister_driver(&nsc_ircc_pnp_driver
);
315 * Function nsc_ircc_cleanup ()
317 * Close all configured chips
320 static void __exit
nsc_ircc_cleanup(void)
324 for (i
= 0; i
< ARRAY_SIZE(dev_self
); i
++) {
326 nsc_ircc_close(dev_self
[i
]);
329 platform_driver_unregister(&nsc_ircc_driver
);
332 pnp_unregister_driver(&nsc_ircc_pnp_driver
);
337 static const struct net_device_ops nsc_ircc_sir_ops
= {
338 .ndo_open
= nsc_ircc_net_open
,
339 .ndo_stop
= nsc_ircc_net_close
,
340 .ndo_start_xmit
= nsc_ircc_hard_xmit_sir
,
341 .ndo_do_ioctl
= nsc_ircc_net_ioctl
,
344 static const struct net_device_ops nsc_ircc_fir_ops
= {
345 .ndo_open
= nsc_ircc_net_open
,
346 .ndo_stop
= nsc_ircc_net_close
,
347 .ndo_start_xmit
= nsc_ircc_hard_xmit_fir
,
348 .ndo_do_ioctl
= nsc_ircc_net_ioctl
,
352 * Function nsc_ircc_open (iobase, irq)
354 * Open driver instance
357 static int __init
nsc_ircc_open(chipio_t
*info
)
359 struct net_device
*dev
;
360 struct nsc_ircc_cb
*self
;
364 IRDA_DEBUG(2, "%s()\n", __func__
);
367 for (chip_index
= 0; chip_index
< ARRAY_SIZE(dev_self
); chip_index
++) {
368 if (!dev_self
[chip_index
])
372 if (chip_index
== ARRAY_SIZE(dev_self
)) {
373 IRDA_ERROR("%s(), maximum number of supported chips reached!\n", __func__
);
377 IRDA_MESSAGE("%s, Found chip at base=0x%03x\n", driver_name
,
380 if ((nsc_ircc_setup(info
)) == -1)
383 IRDA_MESSAGE("%s, driver loaded (Dag Brattli)\n", driver_name
);
385 dev
= alloc_irdadev(sizeof(struct nsc_ircc_cb
));
387 IRDA_ERROR("%s(), can't allocate memory for "
388 "control block!\n", __func__
);
392 self
= netdev_priv(dev
);
394 spin_lock_init(&self
->lock
);
396 /* Need to store self somewhere */
397 dev_self
[chip_index
] = self
;
398 self
->index
= chip_index
;
401 self
->io
.cfg_base
= info
->cfg_base
;
402 self
->io
.fir_base
= info
->fir_base
;
403 self
->io
.irq
= info
->irq
;
404 self
->io
.fir_ext
= CHIP_IO_EXTENT
;
405 self
->io
.dma
= info
->dma
;
406 self
->io
.fifo_size
= 32;
408 /* Reserve the ioports that we need */
409 ret
= request_region(self
->io
.fir_base
, self
->io
.fir_ext
, driver_name
);
411 IRDA_WARNING("%s(), can't get iobase of 0x%03x\n",
412 __func__
, self
->io
.fir_base
);
417 /* Initialize QoS for this device */
418 irda_init_max_qos_capabilies(&self
->qos
);
420 /* The only value we must override it the baudrate */
421 self
->qos
.baud_rate
.bits
= IR_9600
|IR_19200
|IR_38400
|IR_57600
|
422 IR_115200
|IR_576000
|IR_1152000
|(IR_4000000
<< 8);
424 self
->qos
.min_turn_time
.bits
= qos_mtt_bits
;
425 irda_qos_bits_to_value(&self
->qos
);
427 /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */
428 self
->rx_buff
.truesize
= 14384;
429 self
->tx_buff
.truesize
= 14384;
431 /* Allocate memory if needed */
433 dma_alloc_coherent(NULL
, self
->rx_buff
.truesize
,
434 &self
->rx_buff_dma
, GFP_KERNEL
| __GFP_ZERO
);
435 if (self
->rx_buff
.head
== NULL
) {
442 dma_alloc_coherent(NULL
, self
->tx_buff
.truesize
,
443 &self
->tx_buff_dma
, GFP_KERNEL
| __GFP_ZERO
);
444 if (self
->tx_buff
.head
== NULL
) {
449 self
->rx_buff
.in_frame
= FALSE
;
450 self
->rx_buff
.state
= OUTSIDE_FRAME
;
451 self
->tx_buff
.data
= self
->tx_buff
.head
;
452 self
->rx_buff
.data
= self
->rx_buff
.head
;
454 /* Reset Tx queue info */
455 self
->tx_fifo
.len
= self
->tx_fifo
.ptr
= self
->tx_fifo
.free
= 0;
456 self
->tx_fifo
.tail
= self
->tx_buff
.head
;
458 /* Override the network functions we need to use */
459 dev
->netdev_ops
= &nsc_ircc_sir_ops
;
461 err
= register_netdev(dev
);
463 IRDA_ERROR("%s(), register_netdev() failed!\n", __func__
);
466 IRDA_MESSAGE("IrDA: Registered device %s\n", dev
->name
);
468 /* Check if user has supplied a valid dongle id or not */
469 if ((dongle_id
<= 0) ||
470 (dongle_id
>= ARRAY_SIZE(dongle_types
))) {
471 dongle_id
= nsc_ircc_read_dongle_id(self
->io
.fir_base
);
473 IRDA_MESSAGE("%s, Found dongle: %s\n", driver_name
,
474 dongle_types
[dongle_id
]);
476 IRDA_MESSAGE("%s, Using dongle: %s\n", driver_name
,
477 dongle_types
[dongle_id
]);
480 self
->io
.dongle_id
= dongle_id
;
481 nsc_ircc_init_dongle_interface(self
->io
.fir_base
, dongle_id
);
483 self
->pldev
= platform_device_register_simple(NSC_IRCC_DRIVER_NAME
,
484 self
->index
, NULL
, 0);
485 if (IS_ERR(self
->pldev
)) {
486 err
= PTR_ERR(self
->pldev
);
489 platform_set_drvdata(self
->pldev
, self
);
494 unregister_netdev(dev
);
496 dma_free_coherent(NULL
, self
->tx_buff
.truesize
,
497 self
->tx_buff
.head
, self
->tx_buff_dma
);
499 dma_free_coherent(NULL
, self
->rx_buff
.truesize
,
500 self
->rx_buff
.head
, self
->rx_buff_dma
);
502 release_region(self
->io
.fir_base
, self
->io
.fir_ext
);
505 dev_self
[chip_index
] = NULL
;
510 * Function nsc_ircc_close (self)
512 * Close driver instance
515 static int __exit
nsc_ircc_close(struct nsc_ircc_cb
*self
)
519 IRDA_DEBUG(4, "%s()\n", __func__
);
521 IRDA_ASSERT(self
!= NULL
, return -1;);
523 iobase
= self
->io
.fir_base
;
525 platform_device_unregister(self
->pldev
);
527 /* Remove netdevice */
528 unregister_netdev(self
->netdev
);
530 /* Release the PORT that this driver is using */
531 IRDA_DEBUG(4, "%s(), Releasing Region %03x\n",
532 __func__
, self
->io
.fir_base
);
533 release_region(self
->io
.fir_base
, self
->io
.fir_ext
);
535 if (self
->tx_buff
.head
)
536 dma_free_coherent(NULL
, self
->tx_buff
.truesize
,
537 self
->tx_buff
.head
, self
->tx_buff_dma
);
539 if (self
->rx_buff
.head
)
540 dma_free_coherent(NULL
, self
->rx_buff
.truesize
,
541 self
->rx_buff
.head
, self
->rx_buff_dma
);
543 dev_self
[self
->index
] = NULL
;
544 free_netdev(self
->netdev
);
550 * Function nsc_ircc_init_108 (iobase, cfg_base, irq, dma)
552 * Initialize the NSC '108 chip
555 static int nsc_ircc_init_108(nsc_chip_t
*chip
, chipio_t
*info
)
557 int cfg_base
= info
->cfg_base
;
560 outb(2, cfg_base
); /* Mode Control Register (MCTL) */
561 outb(0x00, cfg_base
+1); /* Disable device */
563 /* Base Address and Interrupt Control Register (BAIC) */
564 outb(CFG_108_BAIC
, cfg_base
);
565 switch (info
->fir_base
) {
566 case 0x3e8: outb(0x14, cfg_base
+1); break;
567 case 0x2e8: outb(0x15, cfg_base
+1); break;
568 case 0x3f8: outb(0x16, cfg_base
+1); break;
569 case 0x2f8: outb(0x17, cfg_base
+1); break;
570 default: IRDA_ERROR("%s(), invalid base_address", __func__
);
573 /* Control Signal Routing Register (CSRT) */
575 case 3: temp
= 0x01; break;
576 case 4: temp
= 0x02; break;
577 case 5: temp
= 0x03; break;
578 case 7: temp
= 0x04; break;
579 case 9: temp
= 0x05; break;
580 case 11: temp
= 0x06; break;
581 case 15: temp
= 0x07; break;
582 default: IRDA_ERROR("%s(), invalid irq", __func__
);
584 outb(CFG_108_CSRT
, cfg_base
);
587 case 0: outb(0x08+temp
, cfg_base
+1); break;
588 case 1: outb(0x10+temp
, cfg_base
+1); break;
589 case 3: outb(0x18+temp
, cfg_base
+1); break;
590 default: IRDA_ERROR("%s(), invalid dma", __func__
);
593 outb(CFG_108_MCTL
, cfg_base
); /* Mode Control Register (MCTL) */
594 outb(0x03, cfg_base
+1); /* Enable device */
600 * Function nsc_ircc_probe_108 (chip, info)
605 static int nsc_ircc_probe_108(nsc_chip_t
*chip
, chipio_t
*info
)
607 int cfg_base
= info
->cfg_base
;
610 /* Read address and interrupt control register (BAIC) */
611 outb(CFG_108_BAIC
, cfg_base
);
612 reg
= inb(cfg_base
+1);
614 switch (reg
& 0x03) {
616 info
->fir_base
= 0x3e8;
619 info
->fir_base
= 0x2e8;
622 info
->fir_base
= 0x3f8;
625 info
->fir_base
= 0x2f8;
628 info
->sir_base
= info
->fir_base
;
629 IRDA_DEBUG(2, "%s(), probing fir_base=0x%03x\n", __func__
,
632 /* Read control signals routing register (CSRT) */
633 outb(CFG_108_CSRT
, cfg_base
);
634 reg
= inb(cfg_base
+1);
636 switch (reg
& 0x07) {
662 IRDA_DEBUG(2, "%s(), probing irq=%d\n", __func__
, info
->irq
);
664 /* Currently we only read Rx DMA but it will also be used for Tx */
665 switch ((reg
>> 3) & 0x03) {
679 IRDA_DEBUG(2, "%s(), probing dma=%d\n", __func__
, info
->dma
);
681 /* Read mode control register (MCTL) */
682 outb(CFG_108_MCTL
, cfg_base
);
683 reg
= inb(cfg_base
+1);
685 info
->enabled
= reg
& 0x01;
686 info
->suspended
= !((reg
>> 1) & 0x01);
692 * Function nsc_ircc_init_338 (chip, info)
694 * Initialize the NSC '338 chip. Remember that the 87338 needs two
695 * consecutive writes to the data registers while CPU interrupts are
696 * disabled. The 97338 does not require this, but shouldn't be any
697 * harm if we do it anyway.
699 static int nsc_ircc_init_338(nsc_chip_t
*chip
, chipio_t
*info
)
707 * Function nsc_ircc_probe_338 (chip, info)
712 static int nsc_ircc_probe_338(nsc_chip_t
*chip
, chipio_t
*info
)
714 int cfg_base
= info
->cfg_base
;
718 /* Read function enable register (FER) */
719 outb(CFG_338_FER
, cfg_base
);
720 reg
= inb(cfg_base
+1);
722 info
->enabled
= (reg
>> 2) & 0x01;
724 /* Check if we are in Legacy or PnP mode */
725 outb(CFG_338_PNP0
, cfg_base
);
726 reg
= inb(cfg_base
+1);
728 pnp
= (reg
>> 3) & 0x01;
730 IRDA_DEBUG(2, "(), Chip is in PnP mode\n");
731 outb(0x46, cfg_base
);
732 reg
= (inb(cfg_base
+1) & 0xfe) << 2;
734 outb(0x47, cfg_base
);
735 reg
|= ((inb(cfg_base
+1) & 0xfc) << 8);
737 info
->fir_base
= reg
;
739 /* Read function address register (FAR) */
740 outb(CFG_338_FAR
, cfg_base
);
741 reg
= inb(cfg_base
+1);
743 switch ((reg
>> 4) & 0x03) {
745 info
->fir_base
= 0x3f8;
748 info
->fir_base
= 0x2f8;
759 switch ((reg
>> 6) & 0x03) {
762 info
->fir_base
= 0x3e8;
764 info
->fir_base
= 0x2e8;
768 info
->fir_base
= 0x338;
770 info
->fir_base
= 0x238;
774 info
->fir_base
= 0x2e8;
776 info
->fir_base
= 0x2e0;
780 info
->fir_base
= 0x220;
782 info
->fir_base
= 0x228;
787 info
->sir_base
= info
->fir_base
;
789 /* Read PnP register 1 (PNP1) */
790 outb(CFG_338_PNP1
, cfg_base
);
791 reg
= inb(cfg_base
+1);
793 info
->irq
= reg
>> 4;
795 /* Read PnP register 3 (PNP3) */
796 outb(CFG_338_PNP3
, cfg_base
);
797 reg
= inb(cfg_base
+1);
799 info
->dma
= (reg
& 0x07) - 1;
801 /* Read power and test register (PTR) */
802 outb(CFG_338_PTR
, cfg_base
);
803 reg
= inb(cfg_base
+1);
805 info
->suspended
= reg
& 0x01;
812 * Function nsc_ircc_init_39x (chip, info)
814 * Now that we know it's a '39x (see probe below), we need to
815 * configure it so we can use it.
817 * The NSC '338 chip is a Super I/O chip with a "bank" architecture,
818 * the configuration of the different functionality (serial, parallel,
819 * floppy...) are each in a different bank (Logical Device Number).
820 * The base address, irq and dma configuration registers are common
821 * to all functionalities (index 0x30 to 0x7F).
822 * There is only one configuration register specific to the
823 * serial port, CFG_39X_SPC.
826 * Note : this code was written by Jan Frey <janfrey@web.de>
828 static int nsc_ircc_init_39x(nsc_chip_t
*chip
, chipio_t
*info
)
830 int cfg_base
= info
->cfg_base
;
833 /* User is sure about his config... accept it. */
834 IRDA_DEBUG(2, "%s(): nsc_ircc_init_39x (user settings): "
835 "io=0x%04x, irq=%d, dma=%d\n",
836 __func__
, info
->fir_base
, info
->irq
, info
->dma
);
838 /* Access bank for SP2 */
839 outb(CFG_39X_LDN
, cfg_base
);
840 outb(0x02, cfg_base
+1);
844 /* We want to enable the device if not enabled */
845 outb(CFG_39X_ACT
, cfg_base
);
846 enabled
= inb(cfg_base
+1) & 0x01;
849 /* Enable the device */
850 outb(CFG_39X_SIOCF1
, cfg_base
);
851 outb(0x01, cfg_base
+1);
852 /* May want to update info->enabled. Jean II */
855 /* Enable UART bank switching (bit 7) ; Sets the chip to normal
856 * power mode (wake up from sleep mode) (bit 1) */
857 outb(CFG_39X_SPC
, cfg_base
);
858 outb(0x82, cfg_base
+1);
864 * Function nsc_ircc_probe_39x (chip, info)
866 * Test if we really have a '39x chip at the given address
868 * Note : this code was written by Jan Frey <janfrey@web.de>
870 static int nsc_ircc_probe_39x(nsc_chip_t
*chip
, chipio_t
*info
)
872 int cfg_base
= info
->cfg_base
;
873 int reg1
, reg2
, irq
, irqt
, dma1
, dma2
;
876 IRDA_DEBUG(2, "%s(), nsc_ircc_probe_39x, base=%d\n",
879 /* This function should be executed with irq off to avoid
880 * another driver messing with the Super I/O bank - Jean II */
882 /* Access bank for SP2 */
883 outb(CFG_39X_LDN
, cfg_base
);
884 outb(0x02, cfg_base
+1);
886 /* Read infos about SP2 ; store in info struct */
887 outb(CFG_39X_BASEH
, cfg_base
);
888 reg1
= inb(cfg_base
+1);
889 outb(CFG_39X_BASEL
, cfg_base
);
890 reg2
= inb(cfg_base
+1);
891 info
->fir_base
= (reg1
<< 8) | reg2
;
893 outb(CFG_39X_IRQNUM
, cfg_base
);
894 irq
= inb(cfg_base
+1);
895 outb(CFG_39X_IRQSEL
, cfg_base
);
896 irqt
= inb(cfg_base
+1);
899 outb(CFG_39X_DMA0
, cfg_base
);
900 dma1
= inb(cfg_base
+1);
901 outb(CFG_39X_DMA1
, cfg_base
);
902 dma2
= inb(cfg_base
+1);
905 outb(CFG_39X_ACT
, cfg_base
);
906 info
->enabled
= enabled
= inb(cfg_base
+1) & 0x01;
908 outb(CFG_39X_SPC
, cfg_base
);
909 susp
= 1 - ((inb(cfg_base
+1) & 0x02) >> 1);
911 IRDA_DEBUG(2, "%s(): io=0x%02x%02x, irq=%d (type %d), rxdma=%d, txdma=%d, enabled=%d (suspended=%d)\n", __func__
, reg1
,reg2
,irq
,irqt
,dma1
,dma2
,enabled
,susp
);
915 /* We want to enable the device if not enabled */
916 outb(CFG_39X_ACT
, cfg_base
);
917 enabled
= inb(cfg_base
+1) & 0x01;
920 /* Enable the device */
921 outb(CFG_39X_SIOCF1
, cfg_base
);
922 outb(0x01, cfg_base
+1);
923 /* May want to update info->enabled. Jean II */
926 /* Enable UART bank switching (bit 7) ; Sets the chip to normal
927 * power mode (wake up from sleep mode) (bit 1) */
928 outb(CFG_39X_SPC
, cfg_base
);
929 outb(0x82, cfg_base
+1);
936 static int nsc_ircc_pnp_probe(struct pnp_dev
*dev
, const struct pnp_device_id
*id
)
938 memset(&pnp_info
, 0, sizeof(chipio_t
));
943 if (id
->driver_data
& NSC_FORCE_DONGLE_TYPE9
)
946 /* There doesn't seem to be any way of getting the cfg_base.
947 * On my box, cfg_base is in the PnP descriptor of the
948 * motherboard. Oh well... Jean II */
950 if (pnp_port_valid(dev
, 0) &&
951 !(pnp_port_flags(dev
, 0) & IORESOURCE_DISABLED
))
952 pnp_info
.fir_base
= pnp_port_start(dev
, 0);
954 if (pnp_irq_valid(dev
, 0) &&
955 !(pnp_irq_flags(dev
, 0) & IORESOURCE_DISABLED
))
956 pnp_info
.irq
= pnp_irq(dev
, 0);
958 if (pnp_dma_valid(dev
, 0) &&
959 !(pnp_dma_flags(dev
, 0) & IORESOURCE_DISABLED
))
960 pnp_info
.dma
= pnp_dma(dev
, 0);
962 IRDA_DEBUG(0, "%s() : From PnP, found firbase 0x%03X ; irq %d ; dma %d.\n",
963 __func__
, pnp_info
.fir_base
, pnp_info
.irq
, pnp_info
.dma
);
965 if((pnp_info
.fir_base
== 0) ||
966 (pnp_info
.irq
== -1) || (pnp_info
.dma
== -1)) {
967 /* Returning an error will disable the device. Yuck ! */
977 * Function nsc_ircc_setup (info)
979 * Returns non-negative on success.
982 static int nsc_ircc_setup(chipio_t
*info
)
985 int iobase
= info
->fir_base
;
987 /* Read the Module ID */
988 switch_bank(iobase
, BANK3
);
989 version
= inb(iobase
+MID
);
991 IRDA_DEBUG(2, "%s() Driver %s Found chip version %02x\n",
992 __func__
, driver_name
, version
);
995 if (0x20 != (version
& 0xf0)) {
996 IRDA_ERROR("%s, Wrong chip version %02x\n",
997 driver_name
, version
);
1001 /* Switch to advanced mode */
1002 switch_bank(iobase
, BANK2
);
1003 outb(ECR1_EXT_SL
, iobase
+ECR1
);
1004 switch_bank(iobase
, BANK0
);
1006 /* Set FIFO threshold to TX17, RX16, reset and enable FIFO's */
1007 switch_bank(iobase
, BANK0
);
1008 outb(FCR_RXTH
|FCR_TXTH
|FCR_TXSR
|FCR_RXSR
|FCR_FIFO_EN
, iobase
+FCR
);
1010 outb(0x03, iobase
+LCR
); /* 8 bit word length */
1011 outb(MCR_SIR
, iobase
+MCR
); /* Start at SIR-mode, also clears LSR*/
1013 /* Set FIFO size to 32 */
1014 switch_bank(iobase
, BANK2
);
1015 outb(EXCR2_RFSIZ
|EXCR2_TFSIZ
, iobase
+EXCR2
);
1017 /* IRCR2: FEND_MD is not set */
1018 switch_bank(iobase
, BANK5
);
1019 outb(0x02, iobase
+4);
1021 /* Make sure that some defaults are OK */
1022 switch_bank(iobase
, BANK6
);
1023 outb(0x20, iobase
+0); /* Set 32 bits FIR CRC */
1024 outb(0x0a, iobase
+1); /* Set MIR pulse width */
1025 outb(0x0d, iobase
+2); /* Set SIR pulse width to 1.6us */
1026 outb(0x2a, iobase
+4); /* Set beginning frag, and preamble length */
1028 /* Enable receive interrupts */
1029 switch_bank(iobase
, BANK0
);
1030 outb(IER_RXHDL_IE
, iobase
+IER
);
1036 * Function nsc_ircc_read_dongle_id (void)
1038 * Try to read dongle indentification. This procedure needs to be executed
1039 * once after power-on/reset. It also needs to be used whenever you suspect
1040 * that the user may have plugged/unplugged the IrDA Dongle.
1042 static int nsc_ircc_read_dongle_id (int iobase
)
1047 bank
= inb(iobase
+BSR
);
1050 switch_bank(iobase
, BANK7
);
1052 /* IRCFG4: IRSL0_DS and IRSL21_DS are cleared */
1053 outb(0x00, iobase
+7);
1055 /* ID0, 1, and 2 are pulled up/down very slowly */
1058 /* IRCFG1: read the ID bits */
1059 dongle_id
= inb(iobase
+4) & 0x0f;
1061 #ifdef BROKEN_DONGLE_ID
1062 if (dongle_id
== 0x0a)
1065 /* Go back to bank 0 before returning */
1066 switch_bank(iobase
, BANK0
);
1068 outb(bank
, iobase
+BSR
);
1074 * Function nsc_ircc_init_dongle_interface (iobase, dongle_id)
1076 * This function initializes the dongle for the transceiver that is
1077 * used. This procedure needs to be executed once after
1078 * power-on/reset. It also needs to be used whenever you suspect that
1079 * the dongle is changed.
1081 static void nsc_ircc_init_dongle_interface (int iobase
, int dongle_id
)
1085 /* Save current bank */
1086 bank
= inb(iobase
+BSR
);
1089 switch_bank(iobase
, BANK7
);
1091 /* IRCFG4: set according to dongle_id */
1092 switch (dongle_id
) {
1093 case 0x00: /* same as */
1094 case 0x01: /* Differential serial interface */
1095 IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n",
1096 __func__
, dongle_types
[dongle_id
]);
1098 case 0x02: /* same as */
1099 case 0x03: /* Reserved */
1100 IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n",
1101 __func__
, dongle_types
[dongle_id
]);
1103 case 0x04: /* Sharp RY5HD01 */
1105 case 0x05: /* Reserved, but this is what the Thinkpad reports */
1106 IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n",
1107 __func__
, dongle_types
[dongle_id
]);
1109 case 0x06: /* Single-ended serial interface */
1110 IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n",
1111 __func__
, dongle_types
[dongle_id
]);
1113 case 0x07: /* Consumer-IR only */
1114 IRDA_DEBUG(0, "%s(), %s is not for IrDA mode\n",
1115 __func__
, dongle_types
[dongle_id
]);
1117 case 0x08: /* HP HSDL-2300, HP HSDL-3600/HSDL-3610 */
1118 IRDA_DEBUG(0, "%s(), %s\n",
1119 __func__
, dongle_types
[dongle_id
]);
1121 case 0x09: /* IBM31T1100 or Temic TFDS6000/TFDS6500 */
1122 outb(0x28, iobase
+7); /* Set irsl[0-2] as output */
1124 case 0x0A: /* same as */
1125 case 0x0B: /* Reserved */
1126 IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n",
1127 __func__
, dongle_types
[dongle_id
]);
1129 case 0x0C: /* same as */
1130 case 0x0D: /* HP HSDL-1100/HSDL-2100 */
1132 * Set irsl0 as input, irsl[1-2] as output, and separate
1133 * inputs are used for SIR and MIR/FIR
1135 outb(0x48, iobase
+7);
1137 case 0x0E: /* Supports SIR Mode only */
1138 outb(0x28, iobase
+7); /* Set irsl[0-2] as output */
1140 case 0x0F: /* No dongle connected */
1141 IRDA_DEBUG(0, "%s(), %s\n",
1142 __func__
, dongle_types
[dongle_id
]);
1144 switch_bank(iobase
, BANK0
);
1145 outb(0x62, iobase
+MCR
);
1148 IRDA_DEBUG(0, "%s(), invalid dongle_id %#x",
1149 __func__
, dongle_id
);
1152 /* IRCFG1: IRSL1 and 2 are set to IrDA mode */
1153 outb(0x00, iobase
+4);
1155 /* Restore bank register */
1156 outb(bank
, iobase
+BSR
);
1158 } /* set_up_dongle_interface */
1161 * Function nsc_ircc_change_dongle_speed (iobase, speed, dongle_id)
1163 * Change speed of the attach dongle
1166 static void nsc_ircc_change_dongle_speed(int iobase
, int speed
, int dongle_id
)
1170 /* Save current bank */
1171 bank
= inb(iobase
+BSR
);
1174 switch_bank(iobase
, BANK7
);
1176 /* IRCFG1: set according to dongle_id */
1177 switch (dongle_id
) {
1178 case 0x00: /* same as */
1179 case 0x01: /* Differential serial interface */
1180 IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n",
1181 __func__
, dongle_types
[dongle_id
]);
1183 case 0x02: /* same as */
1184 case 0x03: /* Reserved */
1185 IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n",
1186 __func__
, dongle_types
[dongle_id
]);
1188 case 0x04: /* Sharp RY5HD01 */
1190 case 0x05: /* Reserved */
1191 IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n",
1192 __func__
, dongle_types
[dongle_id
]);
1194 case 0x06: /* Single-ended serial interface */
1195 IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n",
1196 __func__
, dongle_types
[dongle_id
]);
1198 case 0x07: /* Consumer-IR only */
1199 IRDA_DEBUG(0, "%s(), %s is not for IrDA mode\n",
1200 __func__
, dongle_types
[dongle_id
]);
1202 case 0x08: /* HP HSDL-2300, HP HSDL-3600/HSDL-3610 */
1203 IRDA_DEBUG(0, "%s(), %s\n",
1204 __func__
, dongle_types
[dongle_id
]);
1205 outb(0x00, iobase
+4);
1207 outb(0x01, iobase
+4);
1209 case 0x09: /* IBM31T1100 or Temic TFDS6000/TFDS6500 */
1210 outb(0x01, iobase
+4);
1212 if (speed
== 4000000) {
1213 /* There was a cli() there, but we now are already
1214 * under spin_lock_irqsave() - JeanII */
1215 outb(0x81, iobase
+4);
1216 outb(0x80, iobase
+4);
1218 outb(0x00, iobase
+4);
1220 case 0x0A: /* same as */
1221 case 0x0B: /* Reserved */
1222 IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n",
1223 __func__
, dongle_types
[dongle_id
]);
1225 case 0x0C: /* same as */
1226 case 0x0D: /* HP HSDL-1100/HSDL-2100 */
1228 case 0x0E: /* Supports SIR Mode only */
1230 case 0x0F: /* No dongle connected */
1231 IRDA_DEBUG(0, "%s(), %s is not for IrDA mode\n",
1232 __func__
, dongle_types
[dongle_id
]);
1234 switch_bank(iobase
, BANK0
);
1235 outb(0x62, iobase
+MCR
);
1238 IRDA_DEBUG(0, "%s(), invalid data_rate\n", __func__
);
1240 /* Restore bank register */
1241 outb(bank
, iobase
+BSR
);
1245 * Function nsc_ircc_change_speed (self, baud)
1247 * Change the speed of the device
1249 * This function *must* be called with irq off and spin-lock.
1251 static __u8
nsc_ircc_change_speed(struct nsc_ircc_cb
*self
, __u32 speed
)
1253 struct net_device
*dev
= self
->netdev
;
1257 __u8 ier
; /* Interrupt enable register */
1259 IRDA_DEBUG(2, "%s(), speed=%d\n", __func__
, speed
);
1261 IRDA_ASSERT(self
!= NULL
, return 0;);
1263 iobase
= self
->io
.fir_base
;
1265 /* Update accounting for new speed */
1266 self
->io
.speed
= speed
;
1268 /* Save current bank */
1269 bank
= inb(iobase
+BSR
);
1271 /* Disable interrupts */
1272 switch_bank(iobase
, BANK0
);
1273 outb(0, iobase
+IER
);
1276 switch_bank(iobase
, BANK2
);
1278 outb(0x00, iobase
+BGDH
);
1280 case 9600: outb(0x0c, iobase
+BGDL
); break;
1281 case 19200: outb(0x06, iobase
+BGDL
); break;
1282 case 38400: outb(0x03, iobase
+BGDL
); break;
1283 case 57600: outb(0x02, iobase
+BGDL
); break;
1284 case 115200: outb(0x01, iobase
+BGDL
); break;
1286 switch_bank(iobase
, BANK5
);
1288 /* IRCR2: MDRS is set */
1289 outb(inb(iobase
+4) | 0x04, iobase
+4);
1292 IRDA_DEBUG(0, "%s(), handling baud of 576000\n", __func__
);
1296 IRDA_DEBUG(0, "%s(), handling baud of 1152000\n", __func__
);
1300 IRDA_DEBUG(0, "%s(), handling baud of 4000000\n", __func__
);
1304 IRDA_DEBUG(0, "%s(), unknown baud rate of %d\n",
1309 /* Set appropriate speed mode */
1310 switch_bank(iobase
, BANK0
);
1311 outb(mcr
| MCR_TX_DFR
, iobase
+MCR
);
1313 /* Give some hits to the transceiver */
1314 nsc_ircc_change_dongle_speed(iobase
, speed
, self
->io
.dongle_id
);
1316 /* Set FIFO threshold to TX17, RX16 */
1317 switch_bank(iobase
, BANK0
);
1318 outb(0x00, iobase
+FCR
);
1319 outb(FCR_FIFO_EN
, iobase
+FCR
);
1320 outb(FCR_RXTH
| /* Set Rx FIFO threshold */
1321 FCR_TXTH
| /* Set Tx FIFO threshold */
1322 FCR_TXSR
| /* Reset Tx FIFO */
1323 FCR_RXSR
| /* Reset Rx FIFO */
1324 FCR_FIFO_EN
, /* Enable FIFOs */
1327 /* Set FIFO size to 32 */
1328 switch_bank(iobase
, BANK2
);
1329 outb(EXCR2_RFSIZ
|EXCR2_TFSIZ
, iobase
+EXCR2
);
1331 /* Enable some interrupts so we can receive frames */
1332 switch_bank(iobase
, BANK0
);
1333 if (speed
> 115200) {
1334 /* Install FIR xmit handler */
1335 dev
->netdev_ops
= &nsc_ircc_fir_ops
;
1337 nsc_ircc_dma_receive(self
);
1339 /* Install SIR xmit handler */
1340 dev
->netdev_ops
= &nsc_ircc_sir_ops
;
1343 /* Set our current interrupt mask */
1344 outb(ier
, iobase
+IER
);
1347 outb(bank
, iobase
+BSR
);
1349 /* Make sure interrupt handlers keep the proper interrupt mask */
1354 * Function nsc_ircc_hard_xmit (skb, dev)
1356 * Transmit the frame!
1359 static netdev_tx_t
nsc_ircc_hard_xmit_sir(struct sk_buff
*skb
,
1360 struct net_device
*dev
)
1362 struct nsc_ircc_cb
*self
;
1363 unsigned long flags
;
1368 self
= netdev_priv(dev
);
1370 IRDA_ASSERT(self
!= NULL
, return NETDEV_TX_OK
;);
1372 iobase
= self
->io
.fir_base
;
1374 netif_stop_queue(dev
);
1376 /* Make sure tests *& speed change are atomic */
1377 spin_lock_irqsave(&self
->lock
, flags
);
1379 /* Check if we need to change the speed */
1380 speed
= irda_get_next_speed(skb
);
1381 if ((speed
!= self
->io
.speed
) && (speed
!= -1)) {
1382 /* Check for empty frame. */
1384 /* If we just sent a frame, we get called before
1385 * the last bytes get out (because of the SIR FIFO).
1386 * If this is the case, let interrupt handler change
1387 * the speed itself... Jean II */
1388 if (self
->io
.direction
== IO_RECV
) {
1389 nsc_ircc_change_speed(self
, speed
);
1390 /* TODO : For SIR->SIR, the next packet
1391 * may get corrupted - Jean II */
1392 netif_wake_queue(dev
);
1394 self
->new_speed
= speed
;
1395 /* Queue will be restarted after speed change
1396 * to make sure packets gets through the
1397 * proper xmit handler - Jean II */
1399 dev
->trans_start
= jiffies
;
1400 spin_unlock_irqrestore(&self
->lock
, flags
);
1402 return NETDEV_TX_OK
;
1404 self
->new_speed
= speed
;
1407 /* Save current bank */
1408 bank
= inb(iobase
+BSR
);
1410 self
->tx_buff
.data
= self
->tx_buff
.head
;
1412 self
->tx_buff
.len
= async_wrap_skb(skb
, self
->tx_buff
.data
,
1413 self
->tx_buff
.truesize
);
1415 dev
->stats
.tx_bytes
+= self
->tx_buff
.len
;
1417 /* Add interrupt on tx low level (will fire immediately) */
1418 switch_bank(iobase
, BANK0
);
1419 outb(IER_TXLDL_IE
, iobase
+IER
);
1421 /* Restore bank register */
1422 outb(bank
, iobase
+BSR
);
1424 dev
->trans_start
= jiffies
;
1425 spin_unlock_irqrestore(&self
->lock
, flags
);
1429 return NETDEV_TX_OK
;
1432 static netdev_tx_t
nsc_ircc_hard_xmit_fir(struct sk_buff
*skb
,
1433 struct net_device
*dev
)
1435 struct nsc_ircc_cb
*self
;
1436 unsigned long flags
;
1442 self
= netdev_priv(dev
);
1443 iobase
= self
->io
.fir_base
;
1445 netif_stop_queue(dev
);
1447 /* Make sure tests *& speed change are atomic */
1448 spin_lock_irqsave(&self
->lock
, flags
);
1450 /* Check if we need to change the speed */
1451 speed
= irda_get_next_speed(skb
);
1452 if ((speed
!= self
->io
.speed
) && (speed
!= -1)) {
1453 /* Check for empty frame. */
1455 /* If we are currently transmitting, defer to
1456 * interrupt handler. - Jean II */
1457 if(self
->tx_fifo
.len
== 0) {
1458 nsc_ircc_change_speed(self
, speed
);
1459 netif_wake_queue(dev
);
1461 self
->new_speed
= speed
;
1462 /* Keep queue stopped :
1463 * the speed change operation may change the
1464 * xmit handler, and we want to make sure
1465 * the next packet get through the proper
1466 * Tx path, so block the Tx queue until
1467 * the speed change has been done.
1470 dev
->trans_start
= jiffies
;
1471 spin_unlock_irqrestore(&self
->lock
, flags
);
1473 return NETDEV_TX_OK
;
1475 /* Change speed after current frame */
1476 self
->new_speed
= speed
;
1480 /* Save current bank */
1481 bank
= inb(iobase
+BSR
);
1483 /* Register and copy this frame to DMA memory */
1484 self
->tx_fifo
.queue
[self
->tx_fifo
.free
].start
= self
->tx_fifo
.tail
;
1485 self
->tx_fifo
.queue
[self
->tx_fifo
.free
].len
= skb
->len
;
1486 self
->tx_fifo
.tail
+= skb
->len
;
1488 dev
->stats
.tx_bytes
+= skb
->len
;
1490 skb_copy_from_linear_data(skb
, self
->tx_fifo
.queue
[self
->tx_fifo
.free
].start
,
1492 self
->tx_fifo
.len
++;
1493 self
->tx_fifo
.free
++;
1495 /* Start transmit only if there is currently no transmit going on */
1496 if (self
->tx_fifo
.len
== 1) {
1497 /* Check if we must wait the min turn time or not */
1498 mtt
= irda_get_mtt(skb
);
1500 /* Check how much time we have used already */
1501 do_gettimeofday(&self
->now
);
1502 diff
= self
->now
.tv_usec
- self
->stamp
.tv_usec
;
1506 /* Check if the mtt is larger than the time we have
1507 * already used by all the protocol processing
1513 * Use timer if delay larger than 125 us, and
1514 * use udelay for smaller values which should
1518 /* Adjust for timer resolution */
1522 switch_bank(iobase
, BANK4
);
1523 outb(mtt
& 0xff, iobase
+TMRL
);
1524 outb((mtt
>> 8) & 0x0f, iobase
+TMRH
);
1527 outb(IRCR1_TMR_EN
, iobase
+IRCR1
);
1528 self
->io
.direction
= IO_XMIT
;
1530 /* Enable timer interrupt */
1531 switch_bank(iobase
, BANK0
);
1532 outb(IER_TMR_IE
, iobase
+IER
);
1534 /* Timer will take care of the rest */
1540 /* Enable DMA interrupt */
1541 switch_bank(iobase
, BANK0
);
1542 outb(IER_DMA_IE
, iobase
+IER
);
1544 /* Transmit frame */
1545 nsc_ircc_dma_xmit(self
, iobase
);
1548 /* Not busy transmitting anymore if window is not full,
1549 * and if we don't need to change speed */
1550 if ((self
->tx_fifo
.free
< MAX_TX_WINDOW
) && (self
->new_speed
== 0))
1551 netif_wake_queue(self
->netdev
);
1553 /* Restore bank register */
1554 outb(bank
, iobase
+BSR
);
1556 dev
->trans_start
= jiffies
;
1557 spin_unlock_irqrestore(&self
->lock
, flags
);
1560 return NETDEV_TX_OK
;
1564 * Function nsc_ircc_dma_xmit (self, iobase)
1566 * Transmit data using DMA
1569 static void nsc_ircc_dma_xmit(struct nsc_ircc_cb
*self
, int iobase
)
1573 /* Save current bank */
1574 bsr
= inb(iobase
+BSR
);
1577 switch_bank(iobase
, BANK0
);
1578 outb(inb(iobase
+MCR
) & ~MCR_DMA_EN
, iobase
+MCR
);
1580 self
->io
.direction
= IO_XMIT
;
1582 /* Choose transmit DMA channel */
1583 switch_bank(iobase
, BANK2
);
1584 outb(ECR1_DMASWP
|ECR1_DMANF
|ECR1_EXT_SL
, iobase
+ECR1
);
1586 irda_setup_dma(self
->io
.dma
,
1587 ((u8
*)self
->tx_fifo
.queue
[self
->tx_fifo
.ptr
].start
-
1588 self
->tx_buff
.head
) + self
->tx_buff_dma
,
1589 self
->tx_fifo
.queue
[self
->tx_fifo
.ptr
].len
,
1592 /* Enable DMA and SIR interaction pulse */
1593 switch_bank(iobase
, BANK0
);
1594 outb(inb(iobase
+MCR
)|MCR_TX_DFR
|MCR_DMA_EN
|MCR_IR_PLS
, iobase
+MCR
);
1596 /* Restore bank register */
1597 outb(bsr
, iobase
+BSR
);
1601 * Function nsc_ircc_pio_xmit (self, iobase)
1603 * Transmit data using PIO. Returns the number of bytes that actually
1607 static int nsc_ircc_pio_write(int iobase
, __u8
*buf
, int len
, int fifo_size
)
1612 IRDA_DEBUG(4, "%s()\n", __func__
);
1614 /* Save current bank */
1615 bank
= inb(iobase
+BSR
);
1617 switch_bank(iobase
, BANK0
);
1618 if (!(inb_p(iobase
+LSR
) & LSR_TXEMP
)) {
1619 IRDA_DEBUG(4, "%s(), warning, FIFO not empty yet!\n",
1622 /* FIFO may still be filled to the Tx interrupt threshold */
1626 /* Fill FIFO with current frame */
1627 while ((fifo_size
-- > 0) && (actual
< len
)) {
1628 /* Transmit next byte */
1629 outb(buf
[actual
++], iobase
+TXD
);
1632 IRDA_DEBUG(4, "%s(), fifo_size %d ; %d sent of %d\n",
1633 __func__
, fifo_size
, actual
, len
);
1636 outb(bank
, iobase
+BSR
);
1642 * Function nsc_ircc_dma_xmit_complete (self)
1644 * The transfer of a frame in finished. This function will only be called
1645 * by the interrupt handler
1648 static int nsc_ircc_dma_xmit_complete(struct nsc_ircc_cb
*self
)
1654 IRDA_DEBUG(2, "%s()\n", __func__
);
1656 iobase
= self
->io
.fir_base
;
1658 /* Save current bank */
1659 bank
= inb(iobase
+BSR
);
1662 switch_bank(iobase
, BANK0
);
1663 outb(inb(iobase
+MCR
) & ~MCR_DMA_EN
, iobase
+MCR
);
1665 /* Check for underrun! */
1666 if (inb(iobase
+ASCR
) & ASCR_TXUR
) {
1667 self
->netdev
->stats
.tx_errors
++;
1668 self
->netdev
->stats
.tx_fifo_errors
++;
1670 /* Clear bit, by writing 1 into it */
1671 outb(ASCR_TXUR
, iobase
+ASCR
);
1673 self
->netdev
->stats
.tx_packets
++;
1676 /* Finished with this frame, so prepare for next */
1677 self
->tx_fifo
.ptr
++;
1678 self
->tx_fifo
.len
--;
1680 /* Any frames to be sent back-to-back? */
1681 if (self
->tx_fifo
.len
) {
1682 nsc_ircc_dma_xmit(self
, iobase
);
1684 /* Not finished yet! */
1687 /* Reset Tx FIFO info */
1688 self
->tx_fifo
.len
= self
->tx_fifo
.ptr
= self
->tx_fifo
.free
= 0;
1689 self
->tx_fifo
.tail
= self
->tx_buff
.head
;
1692 /* Make sure we have room for more frames and
1693 * that we don't need to change speed */
1694 if ((self
->tx_fifo
.free
< MAX_TX_WINDOW
) && (self
->new_speed
== 0)) {
1695 /* Not busy transmitting anymore */
1696 /* Tell the network layer, that we can accept more frames */
1697 netif_wake_queue(self
->netdev
);
1701 outb(bank
, iobase
+BSR
);
1707 * Function nsc_ircc_dma_receive (self)
1709 * Get ready for receiving a frame. The device will initiate a DMA
1710 * if it starts to receive a frame.
1713 static int nsc_ircc_dma_receive(struct nsc_ircc_cb
*self
)
1718 iobase
= self
->io
.fir_base
;
1720 /* Reset Tx FIFO info */
1721 self
->tx_fifo
.len
= self
->tx_fifo
.ptr
= self
->tx_fifo
.free
= 0;
1722 self
->tx_fifo
.tail
= self
->tx_buff
.head
;
1724 /* Save current bank */
1725 bsr
= inb(iobase
+BSR
);
1728 switch_bank(iobase
, BANK0
);
1729 outb(inb(iobase
+MCR
) & ~MCR_DMA_EN
, iobase
+MCR
);
1731 /* Choose DMA Rx, DMA Fairness, and Advanced mode */
1732 switch_bank(iobase
, BANK2
);
1733 outb(ECR1_DMANF
|ECR1_EXT_SL
, iobase
+ECR1
);
1735 self
->io
.direction
= IO_RECV
;
1736 self
->rx_buff
.data
= self
->rx_buff
.head
;
1738 /* Reset Rx FIFO. This will also flush the ST_FIFO */
1739 switch_bank(iobase
, BANK0
);
1740 outb(FCR_RXSR
|FCR_FIFO_EN
, iobase
+FCR
);
1742 self
->st_fifo
.len
= self
->st_fifo
.pending_bytes
= 0;
1743 self
->st_fifo
.tail
= self
->st_fifo
.head
= 0;
1745 irda_setup_dma(self
->io
.dma
, self
->rx_buff_dma
, self
->rx_buff
.truesize
,
1749 switch_bank(iobase
, BANK0
);
1750 outb(inb(iobase
+MCR
)|MCR_DMA_EN
, iobase
+MCR
);
1752 /* Restore bank register */
1753 outb(bsr
, iobase
+BSR
);
1759 * Function nsc_ircc_dma_receive_complete (self)
1761 * Finished with receiving frames
1765 static int nsc_ircc_dma_receive_complete(struct nsc_ircc_cb
*self
, int iobase
)
1767 struct st_fifo
*st_fifo
;
1768 struct sk_buff
*skb
;
1773 st_fifo
= &self
->st_fifo
;
1775 /* Save current bank */
1776 bank
= inb(iobase
+BSR
);
1778 /* Read all entries in status FIFO */
1779 switch_bank(iobase
, BANK5
);
1780 while ((status
= inb(iobase
+FRM_ST
)) & FRM_ST_VLD
) {
1781 /* We must empty the status FIFO no matter what */
1782 len
= inb(iobase
+RFLFL
) | ((inb(iobase
+RFLFH
) & 0x1f) << 8);
1784 if (st_fifo
->tail
>= MAX_RX_WINDOW
) {
1785 IRDA_DEBUG(0, "%s(), window is full!\n", __func__
);
1789 st_fifo
->entries
[st_fifo
->tail
].status
= status
;
1790 st_fifo
->entries
[st_fifo
->tail
].len
= len
;
1791 st_fifo
->pending_bytes
+= len
;
1795 /* Try to process all entries in status FIFO */
1796 while (st_fifo
->len
> 0) {
1797 /* Get first entry */
1798 status
= st_fifo
->entries
[st_fifo
->head
].status
;
1799 len
= st_fifo
->entries
[st_fifo
->head
].len
;
1800 st_fifo
->pending_bytes
-= len
;
1804 /* Check for errors */
1805 if (status
& FRM_ST_ERR_MSK
) {
1806 if (status
& FRM_ST_LOST_FR
) {
1807 /* Add number of lost frames to stats */
1808 self
->netdev
->stats
.rx_errors
+= len
;
1811 self
->netdev
->stats
.rx_errors
++;
1813 self
->rx_buff
.data
+= len
;
1815 if (status
& FRM_ST_MAX_LEN
)
1816 self
->netdev
->stats
.rx_length_errors
++;
1818 if (status
& FRM_ST_PHY_ERR
)
1819 self
->netdev
->stats
.rx_frame_errors
++;
1821 if (status
& FRM_ST_BAD_CRC
)
1822 self
->netdev
->stats
.rx_crc_errors
++;
1824 /* The errors below can be reported in both cases */
1825 if (status
& FRM_ST_OVR1
)
1826 self
->netdev
->stats
.rx_fifo_errors
++;
1828 if (status
& FRM_ST_OVR2
)
1829 self
->netdev
->stats
.rx_fifo_errors
++;
1832 * First we must make sure that the frame we
1833 * want to deliver is all in main memory. If we
1834 * cannot tell, then we check if the Rx FIFO is
1835 * empty. If not then we will have to take a nap
1836 * and try again later.
1838 if (st_fifo
->pending_bytes
< self
->io
.fifo_size
) {
1839 switch_bank(iobase
, BANK0
);
1840 if (inb(iobase
+LSR
) & LSR_RXDA
) {
1841 /* Put this entry back in fifo */
1844 st_fifo
->pending_bytes
+= len
;
1845 st_fifo
->entries
[st_fifo
->head
].status
= status
;
1846 st_fifo
->entries
[st_fifo
->head
].len
= len
;
1848 * DMA not finished yet, so try again
1849 * later, set timer value, resolution
1852 switch_bank(iobase
, BANK4
);
1853 outb(0x02, iobase
+TMRL
); /* x 125 us */
1854 outb(0x00, iobase
+TMRH
);
1857 outb(IRCR1_TMR_EN
, iobase
+IRCR1
);
1859 /* Restore bank register */
1860 outb(bank
, iobase
+BSR
);
1862 return FALSE
; /* I'll be back! */
1867 * Remember the time we received this frame, so we can
1868 * reduce the min turn time a bit since we will know
1869 * how much time we have used for protocol processing
1871 do_gettimeofday(&self
->stamp
);
1873 skb
= dev_alloc_skb(len
+1);
1875 IRDA_WARNING("%s(), memory squeeze, "
1876 "dropping frame.\n",
1878 self
->netdev
->stats
.rx_dropped
++;
1880 /* Restore bank register */
1881 outb(bank
, iobase
+BSR
);
1886 /* Make sure IP header gets aligned */
1887 skb_reserve(skb
, 1);
1889 /* Copy frame without CRC */
1890 if (self
->io
.speed
< 4000000) {
1891 skb_put(skb
, len
-2);
1892 skb_copy_to_linear_data(skb
,
1896 skb_put(skb
, len
-4);
1897 skb_copy_to_linear_data(skb
,
1902 /* Move to next frame */
1903 self
->rx_buff
.data
+= len
;
1904 self
->netdev
->stats
.rx_bytes
+= len
;
1905 self
->netdev
->stats
.rx_packets
++;
1907 skb
->dev
= self
->netdev
;
1908 skb_reset_mac_header(skb
);
1909 skb
->protocol
= htons(ETH_P_IRDA
);
1913 /* Restore bank register */
1914 outb(bank
, iobase
+BSR
);
1920 * Function nsc_ircc_pio_receive (self)
1922 * Receive all data in receiver FIFO
1925 static void nsc_ircc_pio_receive(struct nsc_ircc_cb
*self
)
1930 iobase
= self
->io
.fir_base
;
1932 /* Receive all characters in Rx FIFO */
1934 byte
= inb(iobase
+RXD
);
1935 async_unwrap_char(self
->netdev
, &self
->netdev
->stats
,
1936 &self
->rx_buff
, byte
);
1937 } while (inb(iobase
+LSR
) & LSR_RXDA
); /* Data available */
1941 * Function nsc_ircc_sir_interrupt (self, eir)
1943 * Handle SIR interrupt
1946 static void nsc_ircc_sir_interrupt(struct nsc_ircc_cb
*self
, int eir
)
1950 /* Check if transmit FIFO is low on data */
1951 if (eir
& EIR_TXLDL_EV
) {
1952 /* Write data left in transmit buffer */
1953 actual
= nsc_ircc_pio_write(self
->io
.fir_base
,
1956 self
->io
.fifo_size
);
1957 self
->tx_buff
.data
+= actual
;
1958 self
->tx_buff
.len
-= actual
;
1960 self
->io
.direction
= IO_XMIT
;
1962 /* Check if finished */
1963 if (self
->tx_buff
.len
> 0)
1964 self
->ier
= IER_TXLDL_IE
;
1967 self
->netdev
->stats
.tx_packets
++;
1968 netif_wake_queue(self
->netdev
);
1969 self
->ier
= IER_TXEMP_IE
;
1973 /* Check if transmission has completed */
1974 if (eir
& EIR_TXEMP_EV
) {
1975 /* Turn around and get ready to receive some data */
1976 self
->io
.direction
= IO_RECV
;
1977 self
->ier
= IER_RXHDL_IE
;
1978 /* Check if we need to change the speed?
1979 * Need to be after self->io.direction to avoid race with
1980 * nsc_ircc_hard_xmit_sir() - Jean II */
1981 if (self
->new_speed
) {
1982 IRDA_DEBUG(2, "%s(), Changing speed!\n", __func__
);
1983 self
->ier
= nsc_ircc_change_speed(self
,
1985 self
->new_speed
= 0;
1986 netif_wake_queue(self
->netdev
);
1988 /* Check if we are going to FIR */
1989 if (self
->io
.speed
> 115200) {
1990 /* No need to do anymore SIR stuff */
1996 /* Rx FIFO threshold or timeout */
1997 if (eir
& EIR_RXHDL_EV
) {
1998 nsc_ircc_pio_receive(self
);
2000 /* Keep receiving */
2001 self
->ier
= IER_RXHDL_IE
;
2006 * Function nsc_ircc_fir_interrupt (self, eir)
2008 * Handle MIR/FIR interrupt
2011 static void nsc_ircc_fir_interrupt(struct nsc_ircc_cb
*self
, int iobase
,
2016 bank
= inb(iobase
+BSR
);
2018 /* Status FIFO event*/
2019 if (eir
& EIR_SFIF_EV
) {
2020 /* Check if DMA has finished */
2021 if (nsc_ircc_dma_receive_complete(self
, iobase
)) {
2022 /* Wait for next status FIFO interrupt */
2023 self
->ier
= IER_SFIF_IE
;
2025 self
->ier
= IER_SFIF_IE
| IER_TMR_IE
;
2027 } else if (eir
& EIR_TMR_EV
) { /* Timer finished */
2029 switch_bank(iobase
, BANK4
);
2030 outb(0, iobase
+IRCR1
);
2032 /* Clear timer event */
2033 switch_bank(iobase
, BANK0
);
2034 outb(ASCR_CTE
, iobase
+ASCR
);
2036 /* Check if this is a Tx timer interrupt */
2037 if (self
->io
.direction
== IO_XMIT
) {
2038 nsc_ircc_dma_xmit(self
, iobase
);
2040 /* Interrupt on DMA */
2041 self
->ier
= IER_DMA_IE
;
2043 /* Check (again) if DMA has finished */
2044 if (nsc_ircc_dma_receive_complete(self
, iobase
)) {
2045 self
->ier
= IER_SFIF_IE
;
2047 self
->ier
= IER_SFIF_IE
| IER_TMR_IE
;
2050 } else if (eir
& EIR_DMA_EV
) {
2051 /* Finished with all transmissions? */
2052 if (nsc_ircc_dma_xmit_complete(self
)) {
2053 if(self
->new_speed
!= 0) {
2054 /* As we stop the Tx queue, the speed change
2055 * need to be done when the Tx fifo is
2056 * empty. Ask for a Tx done interrupt */
2057 self
->ier
= IER_TXEMP_IE
;
2059 /* Check if there are more frames to be
2061 if (irda_device_txqueue_empty(self
->netdev
)) {
2062 /* Prepare for receive */
2063 nsc_ircc_dma_receive(self
);
2064 self
->ier
= IER_SFIF_IE
;
2066 IRDA_WARNING("%s(), potential "
2067 "Tx queue lockup !\n",
2071 /* Not finished yet, so interrupt on DMA again */
2072 self
->ier
= IER_DMA_IE
;
2074 } else if (eir
& EIR_TXEMP_EV
) {
2075 /* The Tx FIFO has totally drained out, so now we can change
2076 * the speed... - Jean II */
2077 self
->ier
= nsc_ircc_change_speed(self
, self
->new_speed
);
2078 self
->new_speed
= 0;
2079 netif_wake_queue(self
->netdev
);
2080 /* Note : nsc_ircc_change_speed() restarted Rx fifo */
2083 outb(bank
, iobase
+BSR
);
2087 * Function nsc_ircc_interrupt (irq, dev_id, regs)
2089 * An interrupt from the chip has arrived. Time to do some work
2092 static irqreturn_t
nsc_ircc_interrupt(int irq
, void *dev_id
)
2094 struct net_device
*dev
= dev_id
;
2095 struct nsc_ircc_cb
*self
;
2099 self
= netdev_priv(dev
);
2101 spin_lock(&self
->lock
);
2103 iobase
= self
->io
.fir_base
;
2105 bsr
= inb(iobase
+BSR
); /* Save current bank */
2107 switch_bank(iobase
, BANK0
);
2108 self
->ier
= inb(iobase
+IER
);
2109 eir
= inb(iobase
+EIR
) & self
->ier
; /* Mask out the interesting ones */
2111 outb(0, iobase
+IER
); /* Disable interrupts */
2114 /* Dispatch interrupt handler for the current speed */
2115 if (self
->io
.speed
> 115200)
2116 nsc_ircc_fir_interrupt(self
, iobase
, eir
);
2118 nsc_ircc_sir_interrupt(self
, eir
);
2121 outb(self
->ier
, iobase
+IER
); /* Restore interrupts */
2122 outb(bsr
, iobase
+BSR
); /* Restore bank register */
2124 spin_unlock(&self
->lock
);
2125 return IRQ_RETVAL(eir
);
2129 * Function nsc_ircc_is_receiving (self)
2131 * Return TRUE is we are currently receiving a frame
2134 static int nsc_ircc_is_receiving(struct nsc_ircc_cb
*self
)
2136 unsigned long flags
;
2141 IRDA_ASSERT(self
!= NULL
, return FALSE
;);
2143 spin_lock_irqsave(&self
->lock
, flags
);
2145 if (self
->io
.speed
> 115200) {
2146 iobase
= self
->io
.fir_base
;
2148 /* Check if rx FIFO is not empty */
2149 bank
= inb(iobase
+BSR
);
2150 switch_bank(iobase
, BANK2
);
2151 if ((inb(iobase
+RXFLV
) & 0x3f) != 0) {
2152 /* We are receiving something */
2155 outb(bank
, iobase
+BSR
);
2157 status
= (self
->rx_buff
.state
!= OUTSIDE_FRAME
);
2159 spin_unlock_irqrestore(&self
->lock
, flags
);
2165 * Function nsc_ircc_net_open (dev)
2170 static int nsc_ircc_net_open(struct net_device
*dev
)
2172 struct nsc_ircc_cb
*self
;
2177 IRDA_DEBUG(4, "%s()\n", __func__
);
2179 IRDA_ASSERT(dev
!= NULL
, return -1;);
2180 self
= netdev_priv(dev
);
2182 IRDA_ASSERT(self
!= NULL
, return 0;);
2184 iobase
= self
->io
.fir_base
;
2186 if (request_irq(self
->io
.irq
, nsc_ircc_interrupt
, 0, dev
->name
, dev
)) {
2187 IRDA_WARNING("%s, unable to allocate irq=%d\n",
2188 driver_name
, self
->io
.irq
);
2192 * Always allocate the DMA channel after the IRQ, and clean up on
2195 if (request_dma(self
->io
.dma
, dev
->name
)) {
2196 IRDA_WARNING("%s, unable to allocate dma=%d\n",
2197 driver_name
, self
->io
.dma
);
2198 free_irq(self
->io
.irq
, dev
);
2202 /* Save current bank */
2203 bank
= inb(iobase
+BSR
);
2205 /* turn on interrupts */
2206 switch_bank(iobase
, BANK0
);
2207 outb(IER_LS_IE
| IER_RXHDL_IE
, iobase
+IER
);
2209 /* Restore bank register */
2210 outb(bank
, iobase
+BSR
);
2212 /* Ready to play! */
2213 netif_start_queue(dev
);
2215 /* Give self a hardware name */
2216 sprintf(hwname
, "NSC-FIR @ 0x%03x", self
->io
.fir_base
);
2219 * Open new IrLAP layer instance, now that everything should be
2220 * initialized properly
2222 self
->irlap
= irlap_open(dev
, &self
->qos
, hwname
);
2228 * Function nsc_ircc_net_close (dev)
2233 static int nsc_ircc_net_close(struct net_device
*dev
)
2235 struct nsc_ircc_cb
*self
;
2239 IRDA_DEBUG(4, "%s()\n", __func__
);
2241 IRDA_ASSERT(dev
!= NULL
, return -1;);
2243 self
= netdev_priv(dev
);
2244 IRDA_ASSERT(self
!= NULL
, return 0;);
2247 netif_stop_queue(dev
);
2249 /* Stop and remove instance of IrLAP */
2251 irlap_close(self
->irlap
);
2254 iobase
= self
->io
.fir_base
;
2256 disable_dma(self
->io
.dma
);
2258 /* Save current bank */
2259 bank
= inb(iobase
+BSR
);
2261 /* Disable interrupts */
2262 switch_bank(iobase
, BANK0
);
2263 outb(0, iobase
+IER
);
2265 free_irq(self
->io
.irq
, dev
);
2266 free_dma(self
->io
.dma
);
2268 /* Restore bank register */
2269 outb(bank
, iobase
+BSR
);
2275 * Function nsc_ircc_net_ioctl (dev, rq, cmd)
2277 * Process IOCTL commands for this device
2280 static int nsc_ircc_net_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
)
2282 struct if_irda_req
*irq
= (struct if_irda_req
*) rq
;
2283 struct nsc_ircc_cb
*self
;
2284 unsigned long flags
;
2287 IRDA_ASSERT(dev
!= NULL
, return -1;);
2289 self
= netdev_priv(dev
);
2291 IRDA_ASSERT(self
!= NULL
, return -1;);
2293 IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __func__
, dev
->name
, cmd
);
2296 case SIOCSBANDWIDTH
: /* Set bandwidth */
2297 if (!capable(CAP_NET_ADMIN
)) {
2301 spin_lock_irqsave(&self
->lock
, flags
);
2302 nsc_ircc_change_speed(self
, irq
->ifr_baudrate
);
2303 spin_unlock_irqrestore(&self
->lock
, flags
);
2305 case SIOCSMEDIABUSY
: /* Set media busy */
2306 if (!capable(CAP_NET_ADMIN
)) {
2310 irda_device_set_media_busy(self
->netdev
, TRUE
);
2312 case SIOCGRECEIVING
: /* Check if we are receiving right now */
2313 /* This is already protected */
2314 irq
->ifr_receiving
= nsc_ircc_is_receiving(self
);
2322 static int nsc_ircc_suspend(struct platform_device
*dev
, pm_message_t state
)
2324 struct nsc_ircc_cb
*self
= platform_get_drvdata(dev
);
2326 unsigned long flags
;
2327 int iobase
= self
->io
.fir_base
;
2329 if (self
->io
.suspended
)
2332 IRDA_DEBUG(1, "%s, Suspending\n", driver_name
);
2335 if (netif_running(self
->netdev
)) {
2336 netif_device_detach(self
->netdev
);
2337 spin_lock_irqsave(&self
->lock
, flags
);
2338 /* Save current bank */
2339 bank
= inb(iobase
+BSR
);
2341 /* Disable interrupts */
2342 switch_bank(iobase
, BANK0
);
2343 outb(0, iobase
+IER
);
2345 /* Restore bank register */
2346 outb(bank
, iobase
+BSR
);
2348 spin_unlock_irqrestore(&self
->lock
, flags
);
2349 free_irq(self
->io
.irq
, self
->netdev
);
2350 disable_dma(self
->io
.dma
);
2352 self
->io
.suspended
= 1;
2358 static int nsc_ircc_resume(struct platform_device
*dev
)
2360 struct nsc_ircc_cb
*self
= platform_get_drvdata(dev
);
2361 unsigned long flags
;
2363 if (!self
->io
.suspended
)
2366 IRDA_DEBUG(1, "%s, Waking up\n", driver_name
);
2369 nsc_ircc_setup(&self
->io
);
2370 nsc_ircc_init_dongle_interface(self
->io
.fir_base
, self
->io
.dongle_id
);
2372 if (netif_running(self
->netdev
)) {
2373 if (request_irq(self
->io
.irq
, nsc_ircc_interrupt
, 0,
2374 self
->netdev
->name
, self
->netdev
)) {
2375 IRDA_WARNING("%s, unable to allocate irq=%d\n",
2376 driver_name
, self
->io
.irq
);
2379 * Don't fail resume process, just kill this
2382 unregister_netdevice(self
->netdev
);
2384 spin_lock_irqsave(&self
->lock
, flags
);
2385 nsc_ircc_change_speed(self
, self
->io
.speed
);
2386 spin_unlock_irqrestore(&self
->lock
, flags
);
2387 netif_device_attach(self
->netdev
);
2391 spin_lock_irqsave(&self
->lock
, flags
);
2392 nsc_ircc_change_speed(self
, 9600);
2393 spin_unlock_irqrestore(&self
->lock
, flags
);
2395 self
->io
.suspended
= 0;
2401 MODULE_AUTHOR("Dag Brattli <dagb@cs.uit.no>");
2402 MODULE_DESCRIPTION("NSC IrDA Device Driver");
2403 MODULE_LICENSE("GPL");
2406 module_param(qos_mtt_bits
, int, 0);
2407 MODULE_PARM_DESC(qos_mtt_bits
, "Minimum Turn Time");
2408 module_param_array(io
, int, NULL
, 0);
2409 MODULE_PARM_DESC(io
, "Base I/O addresses");
2410 module_param_array(irq
, int, NULL
, 0);
2411 MODULE_PARM_DESC(irq
, "IRQ lines");
2412 module_param_array(dma
, int, NULL
, 0);
2413 MODULE_PARM_DESC(dma
, "DMA channels");
2414 module_param(dongle_id
, int, 0);
2415 MODULE_PARM_DESC(dongle_id
, "Type-id of used dongle");
2417 module_init(nsc_ircc_init
);
2418 module_exit(nsc_ircc_cleanup
);