1 /*********************************************************************
2 * $Id: smsc-ircc2.c,v 1.19.2.5 2002/10/27 11:34:26 dip Exp $
4 * Description: Driver for the SMC Infrared Communications Controller
5 * Status: Experimental.
6 * Author: Daniele Peri (peri@csai.unipa.it)
11 * Copyright (c) 2002 Daniele Peri
12 * All Rights Reserved.
13 * Copyright (c) 2002 Jean Tourrilhes
16 * Based on smc-ircc.c:
18 * Copyright (c) 2001 Stefani Seibold
19 * Copyright (c) 1999-2001 Dag Brattli
20 * Copyright (c) 1998-1999 Thomas Davis,
24 * Copyright (c) 1997, 1998, 1999-2000 Dag Brattli, All Rights Reserved.
27 * This program is free software; you can redistribute it and/or
28 * modify it under the terms of the GNU General Public License as
29 * published by the Free Software Foundation; either version 2 of
30 * the License, or (at your option) any later version.
32 * This program is distributed in the hope that it will be useful,
33 * but WITHOUT ANY WARRANTY; without even the implied warranty of
34 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
35 * GNU General Public License for more details.
37 * You should have received a copy of the GNU General Public License
38 * along with this program; if not, write to the Free Software
39 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
42 ********************************************************************/
44 #include <linux/module.h>
45 #include <linux/kernel.h>
46 #include <linux/types.h>
47 #include <linux/skbuff.h>
48 #include <linux/netdevice.h>
49 #include <linux/ioport.h>
50 #include <linux/delay.h>
51 #include <linux/slab.h>
52 #include <linux/init.h>
53 #include <linux/rtnetlink.h>
54 #include <linux/serial_reg.h>
55 #include <linux/dma-mapping.h>
56 #include <linux/platform_device.h>
60 #include <asm/byteorder.h>
62 #include <linux/spinlock.h>
65 #include <net/irda/wrapper.h>
66 #include <net/irda/irda.h>
67 #include <net/irda/irda_device.h>
69 #include "smsc-ircc2.h"
73 MODULE_AUTHOR("Daniele Peri <peri@csai.unipa.it>");
74 MODULE_DESCRIPTION("SMC IrCC SIR/FIR controller driver");
75 MODULE_LICENSE("GPL");
77 static int ircc_dma
= 255;
78 module_param(ircc_dma
, int, 0);
79 MODULE_PARM_DESC(ircc_dma
, "DMA channel");
81 static int ircc_irq
= 255;
82 module_param(ircc_irq
, int, 0);
83 MODULE_PARM_DESC(ircc_irq
, "IRQ line");
86 module_param(ircc_fir
, int, 0);
87 MODULE_PARM_DESC(ircc_fir
, "FIR Base Address");
90 module_param(ircc_sir
, int, 0);
91 MODULE_PARM_DESC(ircc_sir
, "SIR Base Address");
94 module_param(ircc_cfg
, int, 0);
95 MODULE_PARM_DESC(ircc_cfg
, "Configuration register base address");
97 static int ircc_transceiver
;
98 module_param(ircc_transceiver
, int, 0);
99 MODULE_PARM_DESC(ircc_transceiver
, "Transceiver type");
103 struct smsc_transceiver
{
105 void (*set_for_speed
)(int fir_base
, u32 speed
);
106 int (*probe
)(int fir_base
);
119 struct smsc_chip_address
{
120 unsigned int cfg_base
;
124 /* Private data for each instance */
125 struct smsc_ircc_cb
{
126 struct net_device
*netdev
; /* Yes! we are some kind of netdevice */
127 struct net_device_stats stats
;
128 struct irlap_cb
*irlap
; /* The link layer we are binded to */
130 chipio_t io
; /* IrDA controller information */
131 iobuff_t tx_buff
; /* Transmit buffer */
132 iobuff_t rx_buff
; /* Receive buffer */
133 dma_addr_t tx_buff_dma
;
134 dma_addr_t rx_buff_dma
;
136 struct qos_info qos
; /* QoS capabilities for this device */
138 spinlock_t lock
; /* For serializing operations */
141 __u32 flags
; /* Interface flags */
143 int tx_buff_offsets
[10]; /* Offsets between frames in tx_buff */
144 int tx_len
; /* Number of frames in tx_buff */
147 struct platform_device
*pldev
;
152 #define SMSC_IRCC2_DRIVER_NAME "smsc-ircc2"
154 #define SMSC_IRCC2_C_IRDA_FALLBACK_SPEED 9600
155 #define SMSC_IRCC2_C_DEFAULT_TRANSCEIVER 1
156 #define SMSC_IRCC2_C_NET_TIMEOUT 0
157 #define SMSC_IRCC2_C_SIR_STOP 0
159 static const char *driver_name
= SMSC_IRCC2_DRIVER_NAME
;
163 static int smsc_ircc_open(unsigned int firbase
, unsigned int sirbase
, u8 dma
, u8 irq
);
164 static int smsc_ircc_present(unsigned int fir_base
, unsigned int sir_base
);
165 static void smsc_ircc_setup_io(struct smsc_ircc_cb
*self
, unsigned int fir_base
, unsigned int sir_base
, u8 dma
, u8 irq
);
166 static void smsc_ircc_setup_qos(struct smsc_ircc_cb
*self
);
167 static void smsc_ircc_init_chip(struct smsc_ircc_cb
*self
);
168 static int __exit
smsc_ircc_close(struct smsc_ircc_cb
*self
);
169 static int smsc_ircc_dma_receive(struct smsc_ircc_cb
*self
);
170 static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb
*self
);
171 static void smsc_ircc_sir_receive(struct smsc_ircc_cb
*self
);
172 static int smsc_ircc_hard_xmit_sir(struct sk_buff
*skb
, struct net_device
*dev
);
173 static int smsc_ircc_hard_xmit_fir(struct sk_buff
*skb
, struct net_device
*dev
);
174 static void smsc_ircc_dma_xmit(struct smsc_ircc_cb
*self
, int bofs
);
175 static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb
*self
);
176 static void smsc_ircc_change_speed(struct smsc_ircc_cb
*self
, u32 speed
);
177 static void smsc_ircc_set_sir_speed(struct smsc_ircc_cb
*self
, u32 speed
);
178 static irqreturn_t
smsc_ircc_interrupt(int irq
, void *dev_id
, struct pt_regs
*regs
);
179 static irqreturn_t
smsc_ircc_interrupt_sir(struct net_device
*dev
);
180 static void smsc_ircc_sir_start(struct smsc_ircc_cb
*self
);
181 #if SMSC_IRCC2_C_SIR_STOP
182 static void smsc_ircc_sir_stop(struct smsc_ircc_cb
*self
);
184 static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb
*self
);
185 static int smsc_ircc_sir_write(int iobase
, int fifo_size
, __u8
*buf
, int len
);
186 static int smsc_ircc_net_open(struct net_device
*dev
);
187 static int smsc_ircc_net_close(struct net_device
*dev
);
188 static int smsc_ircc_net_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
);
189 #if SMSC_IRCC2_C_NET_TIMEOUT
190 static void smsc_ircc_timeout(struct net_device
*dev
);
192 static struct net_device_stats
*smsc_ircc_net_get_stats(struct net_device
*dev
);
193 static int smsc_ircc_is_receiving(struct smsc_ircc_cb
*self
);
194 static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb
*self
);
195 static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb
*self
, u32 speed
);
196 static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb
*self
);
199 static int __init
smsc_ircc_look_for_chips(void);
200 static const struct smsc_chip
* __init
smsc_ircc_probe(unsigned short cfg_base
, u8 reg
, const struct smsc_chip
*chip
, char *type
);
201 static int __init
smsc_superio_flat(const struct smsc_chip
*chips
, unsigned short cfg_base
, char *type
);
202 static int __init
smsc_superio_paged(const struct smsc_chip
*chips
, unsigned short cfg_base
, char *type
);
203 static int __init
smsc_superio_fdc(unsigned short cfg_base
);
204 static int __init
smsc_superio_lpc(unsigned short cfg_base
);
206 /* Transceivers specific functions */
208 static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base
, u32 speed
);
209 static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base
);
210 static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base
, u32 speed
);
211 static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base
);
212 static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base
, u32 speed
);
213 static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base
);
215 /* Power Management */
217 static int smsc_ircc_suspend(struct device
*dev
, pm_message_t state
);
218 static int smsc_ircc_resume(struct device
*dev
);
220 static struct device_driver smsc_ircc_driver
= {
221 .name
= SMSC_IRCC2_DRIVER_NAME
,
222 .bus
= &platform_bus_type
,
223 .suspend
= smsc_ircc_suspend
,
224 .resume
= smsc_ircc_resume
,
227 /* Transceivers for SMSC-ircc */
229 static struct smsc_transceiver smsc_transceivers
[] =
231 { "Toshiba Satellite 1800 (GP data pin select)", smsc_ircc_set_transceiver_toshiba_sat1800
, smsc_ircc_probe_transceiver_toshiba_sat1800
},
232 { "Fast pin select", smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select
, smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select
},
233 { "ATC IRMode", smsc_ircc_set_transceiver_smsc_ircc_atc
, smsc_ircc_probe_transceiver_smsc_ircc_atc
},
236 #define SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS (ARRAY_SIZE(smsc_transceivers) - 1)
238 /* SMC SuperIO chipsets definitions */
240 #define KEY55_1 0 /* SuperIO Configuration mode with Key <0x55> */
241 #define KEY55_2 1 /* SuperIO Configuration mode with Key <0x55,0x55> */
242 #define NoIRDA 2 /* SuperIO Chip has no IRDA Port */
243 #define SIR 0 /* SuperIO Chip has only slow IRDA */
244 #define FIR 4 /* SuperIO Chip has fast IRDA */
245 #define SERx4 8 /* SuperIO Chip supports 115,2 KBaud * 4=460,8 KBaud */
247 static struct smsc_chip __initdata fdc_chips_flat
[] =
249 /* Base address 0x3f0 or 0x370 */
250 { "37C44", KEY55_1
|NoIRDA
, 0x00, 0x00 }, /* This chip cannot be detected */
251 { "37C665GT", KEY55_2
|NoIRDA
, 0x65, 0x01 },
252 { "37C665GT", KEY55_2
|NoIRDA
, 0x66, 0x01 },
253 { "37C669", KEY55_2
|SIR
|SERx4
, 0x03, 0x02 },
254 { "37C669", KEY55_2
|SIR
|SERx4
, 0x04, 0x02 }, /* ID? */
255 { "37C78", KEY55_2
|NoIRDA
, 0x78, 0x00 },
256 { "37N769", KEY55_1
|FIR
|SERx4
, 0x28, 0x00 },
257 { "37N869", KEY55_1
|FIR
|SERx4
, 0x29, 0x00 },
261 static struct smsc_chip __initdata fdc_chips_paged
[] =
263 /* Base address 0x3f0 or 0x370 */
264 { "37B72X", KEY55_1
|SIR
|SERx4
, 0x4c, 0x00 },
265 { "37B77X", KEY55_1
|SIR
|SERx4
, 0x43, 0x00 },
266 { "37B78X", KEY55_1
|SIR
|SERx4
, 0x44, 0x00 },
267 { "37B80X", KEY55_1
|SIR
|SERx4
, 0x42, 0x00 },
268 { "37C67X", KEY55_1
|FIR
|SERx4
, 0x40, 0x00 },
269 { "37C93X", KEY55_2
|SIR
|SERx4
, 0x02, 0x01 },
270 { "37C93XAPM", KEY55_1
|SIR
|SERx4
, 0x30, 0x01 },
271 { "37C93XFR", KEY55_2
|FIR
|SERx4
, 0x03, 0x01 },
272 { "37M707", KEY55_1
|SIR
|SERx4
, 0x42, 0x00 },
273 { "37M81X", KEY55_1
|SIR
|SERx4
, 0x4d, 0x00 },
274 { "37N958FR", KEY55_1
|FIR
|SERx4
, 0x09, 0x04 },
275 { "37N971", KEY55_1
|FIR
|SERx4
, 0x0a, 0x00 },
276 { "37N972", KEY55_1
|FIR
|SERx4
, 0x0b, 0x00 },
280 static struct smsc_chip __initdata lpc_chips_flat
[] =
282 /* Base address 0x2E or 0x4E */
283 { "47N227", KEY55_1
|FIR
|SERx4
, 0x5a, 0x00 },
284 { "47N267", KEY55_1
|FIR
|SERx4
, 0x5e, 0x00 },
288 static struct smsc_chip __initdata lpc_chips_paged
[] =
290 /* Base address 0x2E or 0x4E */
291 { "47B27X", KEY55_1
|SIR
|SERx4
, 0x51, 0x00 },
292 { "47B37X", KEY55_1
|SIR
|SERx4
, 0x52, 0x00 },
293 { "47M10X", KEY55_1
|SIR
|SERx4
, 0x59, 0x00 },
294 { "47M120", KEY55_1
|NoIRDA
|SERx4
, 0x5c, 0x00 },
295 { "47M13X", KEY55_1
|SIR
|SERx4
, 0x59, 0x00 },
296 { "47M14X", KEY55_1
|SIR
|SERx4
, 0x5f, 0x00 },
297 { "47N252", KEY55_1
|FIR
|SERx4
, 0x0e, 0x00 },
298 { "47S42X", KEY55_1
|SIR
|SERx4
, 0x57, 0x00 },
302 #define SMSCSIO_TYPE_FDC 1
303 #define SMSCSIO_TYPE_LPC 2
304 #define SMSCSIO_TYPE_FLAT 4
305 #define SMSCSIO_TYPE_PAGED 8
307 static struct smsc_chip_address __initdata possible_addresses
[] =
309 { 0x3f0, SMSCSIO_TYPE_FDC
|SMSCSIO_TYPE_FLAT
|SMSCSIO_TYPE_PAGED
},
310 { 0x370, SMSCSIO_TYPE_FDC
|SMSCSIO_TYPE_FLAT
|SMSCSIO_TYPE_PAGED
},
311 { 0xe0, SMSCSIO_TYPE_FDC
|SMSCSIO_TYPE_FLAT
|SMSCSIO_TYPE_PAGED
},
312 { 0x2e, SMSCSIO_TYPE_LPC
|SMSCSIO_TYPE_FLAT
|SMSCSIO_TYPE_PAGED
},
313 { 0x4e, SMSCSIO_TYPE_LPC
|SMSCSIO_TYPE_FLAT
|SMSCSIO_TYPE_PAGED
},
319 static struct smsc_ircc_cb
*dev_self
[] = { NULL
, NULL
};
320 static unsigned short dev_count
;
322 static inline void register_bank(int iobase
, int bank
)
324 outb(((inb(iobase
+ IRCC_MASTER
) & 0xf0) | (bank
& 0x07)),
325 iobase
+ IRCC_MASTER
);
329 /*******************************************************************************
335 *******************************************************************************/
338 * Function smsc_ircc_init ()
340 * Initialize chip. Just try to find out how many chips we are dealing with
343 static int __init
smsc_ircc_init(void)
347 IRDA_DEBUG(1, "%s\n", __FUNCTION__
);
349 ret
= driver_register(&smsc_ircc_driver
);
351 IRDA_ERROR("%s, Can't register driver!\n", driver_name
);
357 if (ircc_fir
> 0 && ircc_sir
> 0) {
358 IRDA_MESSAGE(" Overriding FIR address 0x%04x\n", ircc_fir
);
359 IRDA_MESSAGE(" Overriding SIR address 0x%04x\n", ircc_sir
);
361 if (smsc_ircc_open(ircc_fir
, ircc_sir
, ircc_dma
, ircc_irq
))
366 /* try user provided configuration register base address */
368 IRDA_MESSAGE(" Overriding configuration address "
369 "0x%04x\n", ircc_cfg
);
370 if (!smsc_superio_fdc(ircc_cfg
))
372 if (!smsc_superio_lpc(ircc_cfg
))
376 if (smsc_ircc_look_for_chips() > 0)
381 driver_unregister(&smsc_ircc_driver
);
387 * Function smsc_ircc_open (firbase, sirbase, dma, irq)
389 * Try to open driver instance
392 static int __init
smsc_ircc_open(unsigned int fir_base
, unsigned int sir_base
, u8 dma
, u8 irq
)
394 struct smsc_ircc_cb
*self
;
395 struct net_device
*dev
;
398 IRDA_DEBUG(1, "%s\n", __FUNCTION__
);
400 err
= smsc_ircc_present(fir_base
, sir_base
);
405 if (dev_count
>= ARRAY_SIZE(dev_self
)) {
406 IRDA_WARNING("%s(), too many devices!\n", __FUNCTION__
);
411 * Allocate new instance of the driver
413 dev
= alloc_irdadev(sizeof(struct smsc_ircc_cb
));
415 IRDA_WARNING("%s() can't allocate net device\n", __FUNCTION__
);
419 SET_MODULE_OWNER(dev
);
421 dev
->hard_start_xmit
= smsc_ircc_hard_xmit_sir
;
422 #if SMSC_IRCC2_C_NET_TIMEOUT
423 dev
->tx_timeout
= smsc_ircc_timeout
;
424 dev
->watchdog_timeo
= HZ
* 2; /* Allow enough time for speed change */
426 dev
->open
= smsc_ircc_net_open
;
427 dev
->stop
= smsc_ircc_net_close
;
428 dev
->do_ioctl
= smsc_ircc_net_ioctl
;
429 dev
->get_stats
= smsc_ircc_net_get_stats
;
431 self
= netdev_priv(dev
);
434 /* Make ifconfig display some details */
435 dev
->base_addr
= self
->io
.fir_base
= fir_base
;
436 dev
->irq
= self
->io
.irq
= irq
;
438 /* Need to store self somewhere */
439 dev_self
[dev_count
] = self
;
440 spin_lock_init(&self
->lock
);
442 self
->rx_buff
.truesize
= SMSC_IRCC2_RX_BUFF_TRUESIZE
;
443 self
->tx_buff
.truesize
= SMSC_IRCC2_TX_BUFF_TRUESIZE
;
446 dma_alloc_coherent(NULL
, self
->rx_buff
.truesize
,
447 &self
->rx_buff_dma
, GFP_KERNEL
);
448 if (self
->rx_buff
.head
== NULL
) {
449 IRDA_ERROR("%s, Can't allocate memory for receive buffer!\n",
455 dma_alloc_coherent(NULL
, self
->tx_buff
.truesize
,
456 &self
->tx_buff_dma
, GFP_KERNEL
);
457 if (self
->tx_buff
.head
== NULL
) {
458 IRDA_ERROR("%s, Can't allocate memory for transmit buffer!\n",
463 memset(self
->rx_buff
.head
, 0, self
->rx_buff
.truesize
);
464 memset(self
->tx_buff
.head
, 0, self
->tx_buff
.truesize
);
466 self
->rx_buff
.in_frame
= FALSE
;
467 self
->rx_buff
.state
= OUTSIDE_FRAME
;
468 self
->tx_buff
.data
= self
->tx_buff
.head
;
469 self
->rx_buff
.data
= self
->rx_buff
.head
;
471 smsc_ircc_setup_io(self
, fir_base
, sir_base
, dma
, irq
);
472 smsc_ircc_setup_qos(self
);
473 smsc_ircc_init_chip(self
);
475 if (ircc_transceiver
> 0 &&
476 ircc_transceiver
< SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS
)
477 self
->transceiver
= ircc_transceiver
;
479 smsc_ircc_probe_transceiver(self
);
481 err
= register_netdev(self
->netdev
);
483 IRDA_ERROR("%s, Network device registration failed!\n",
488 self
->pldev
= platform_device_register_simple(SMSC_IRCC2_DRIVER_NAME
,
490 if (IS_ERR(self
->pldev
)) {
491 err
= PTR_ERR(self
->pldev
);
494 dev_set_drvdata(&self
->pldev
->dev
, self
);
496 IRDA_MESSAGE("IrDA: Registered device %s\n", dev
->name
);
502 unregister_netdev(self
->netdev
);
505 dma_free_coherent(NULL
, self
->tx_buff
.truesize
,
506 self
->tx_buff
.head
, self
->tx_buff_dma
);
508 dma_free_coherent(NULL
, self
->rx_buff
.truesize
,
509 self
->rx_buff
.head
, self
->rx_buff_dma
);
511 free_netdev(self
->netdev
);
512 dev_self
[dev_count
] = NULL
;
514 release_region(fir_base
, SMSC_IRCC2_FIR_CHIP_IO_EXTENT
);
515 release_region(sir_base
, SMSC_IRCC2_SIR_CHIP_IO_EXTENT
);
521 * Function smsc_ircc_present(fir_base, sir_base)
523 * Check the smsc-ircc chip presence
526 static int smsc_ircc_present(unsigned int fir_base
, unsigned int sir_base
)
528 unsigned char low
, high
, chip
, config
, dma
, irq
, version
;
530 if (!request_region(fir_base
, SMSC_IRCC2_FIR_CHIP_IO_EXTENT
,
532 IRDA_WARNING("%s: can't get fir_base of 0x%03x\n",
533 __FUNCTION__
, fir_base
);
537 if (!request_region(sir_base
, SMSC_IRCC2_SIR_CHIP_IO_EXTENT
,
539 IRDA_WARNING("%s: can't get sir_base of 0x%03x\n",
540 __FUNCTION__
, sir_base
);
544 register_bank(fir_base
, 3);
546 high
= inb(fir_base
+ IRCC_ID_HIGH
);
547 low
= inb(fir_base
+ IRCC_ID_LOW
);
548 chip
= inb(fir_base
+ IRCC_CHIP_ID
);
549 version
= inb(fir_base
+ IRCC_VERSION
);
550 config
= inb(fir_base
+ IRCC_INTERFACE
);
551 dma
= config
& IRCC_INTERFACE_DMA_MASK
;
552 irq
= (config
& IRCC_INTERFACE_IRQ_MASK
) >> 4;
554 if (high
!= 0x10 || low
!= 0xb8 || (chip
!= 0xf1 && chip
!= 0xf2)) {
555 IRDA_WARNING("%s(), addr 0x%04x - no device found!\n",
556 __FUNCTION__
, fir_base
);
559 IRDA_MESSAGE("SMsC IrDA Controller found\n IrCC version %d.%d, "
560 "firport 0x%03x, sirport 0x%03x dma=%d, irq=%d\n",
561 chip
& 0x0f, version
, fir_base
, sir_base
, dma
, irq
);
566 release_region(sir_base
, SMSC_IRCC2_SIR_CHIP_IO_EXTENT
);
568 release_region(fir_base
, SMSC_IRCC2_FIR_CHIP_IO_EXTENT
);
574 * Function smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq)
579 static void smsc_ircc_setup_io(struct smsc_ircc_cb
*self
,
580 unsigned int fir_base
, unsigned int sir_base
,
583 unsigned char config
, chip_dma
, chip_irq
;
585 register_bank(fir_base
, 3);
586 config
= inb(fir_base
+ IRCC_INTERFACE
);
587 chip_dma
= config
& IRCC_INTERFACE_DMA_MASK
;
588 chip_irq
= (config
& IRCC_INTERFACE_IRQ_MASK
) >> 4;
590 self
->io
.fir_base
= fir_base
;
591 self
->io
.sir_base
= sir_base
;
592 self
->io
.fir_ext
= SMSC_IRCC2_FIR_CHIP_IO_EXTENT
;
593 self
->io
.sir_ext
= SMSC_IRCC2_SIR_CHIP_IO_EXTENT
;
594 self
->io
.fifo_size
= SMSC_IRCC2_FIFO_SIZE
;
595 self
->io
.speed
= SMSC_IRCC2_C_IRDA_FALLBACK_SPEED
;
599 IRDA_MESSAGE("%s, Overriding IRQ - chip says %d, using %d\n",
600 driver_name
, chip_irq
, irq
);
603 self
->io
.irq
= chip_irq
;
607 IRDA_MESSAGE("%s, Overriding DMA - chip says %d, using %d\n",
608 driver_name
, chip_dma
, dma
);
611 self
->io
.dma
= chip_dma
;
616 * Function smsc_ircc_setup_qos(self)
621 static void smsc_ircc_setup_qos(struct smsc_ircc_cb
*self
)
623 /* Initialize QoS for this device */
624 irda_init_max_qos_capabilies(&self
->qos
);
626 self
->qos
.baud_rate
.bits
= IR_9600
|IR_19200
|IR_38400
|IR_57600
|
627 IR_115200
|IR_576000
|IR_1152000
|(IR_4000000
<< 8);
629 self
->qos
.min_turn_time
.bits
= SMSC_IRCC2_MIN_TURN_TIME
;
630 self
->qos
.window_size
.bits
= SMSC_IRCC2_WINDOW_SIZE
;
631 irda_qos_bits_to_value(&self
->qos
);
635 * Function smsc_ircc_init_chip(self)
640 static void smsc_ircc_init_chip(struct smsc_ircc_cb
*self
)
642 int iobase
, ir_mode
, ctrl
, fast
;
644 IRDA_ASSERT(self
!= NULL
, return;);
646 iobase
= self
->io
.fir_base
;
647 ir_mode
= IRCC_CFGA_IRDA_SIR_A
;
651 register_bank(iobase
, 0);
652 outb(IRCC_MASTER_RESET
, iobase
+ IRCC_MASTER
);
653 outb(0x00, iobase
+ IRCC_MASTER
);
655 register_bank(iobase
, 1);
656 outb(((inb(iobase
+ IRCC_SCE_CFGA
) & 0x87) | ir_mode
),
657 iobase
+ IRCC_SCE_CFGA
);
659 #ifdef smsc_669 /* Uses pin 88/89 for Rx/Tx */
660 outb(((inb(iobase
+ IRCC_SCE_CFGB
) & 0x3f) | IRCC_CFGB_MUX_COM
),
661 iobase
+ IRCC_SCE_CFGB
);
663 outb(((inb(iobase
+ IRCC_SCE_CFGB
) & 0x3f) | IRCC_CFGB_MUX_IR
),
664 iobase
+ IRCC_SCE_CFGB
);
666 (void) inb(iobase
+ IRCC_FIFO_THRESHOLD
);
667 outb(SMSC_IRCC2_FIFO_THRESHOLD
, iobase
+ IRCC_FIFO_THRESHOLD
);
669 register_bank(iobase
, 4);
670 outb((inb(iobase
+ IRCC_CONTROL
) & 0x30) | ctrl
, iobase
+ IRCC_CONTROL
);
672 register_bank(iobase
, 0);
673 outb(fast
, iobase
+ IRCC_LCR_A
);
675 smsc_ircc_set_sir_speed(self
, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED
);
677 /* Power on device */
678 outb(0x00, iobase
+ IRCC_MASTER
);
682 * Function smsc_ircc_net_ioctl (dev, rq, cmd)
684 * Process IOCTL commands for this device
687 static int smsc_ircc_net_ioctl(struct net_device
*dev
, struct ifreq
*rq
, int cmd
)
689 struct if_irda_req
*irq
= (struct if_irda_req
*) rq
;
690 struct smsc_ircc_cb
*self
;
694 IRDA_ASSERT(dev
!= NULL
, return -1;);
696 self
= netdev_priv(dev
);
698 IRDA_ASSERT(self
!= NULL
, return -1;);
700 IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __FUNCTION__
, dev
->name
, cmd
);
703 case SIOCSBANDWIDTH
: /* Set bandwidth */
704 if (!capable(CAP_NET_ADMIN
))
707 /* Make sure we are the only one touching
708 * self->io.speed and the hardware - Jean II */
709 spin_lock_irqsave(&self
->lock
, flags
);
710 smsc_ircc_change_speed(self
, irq
->ifr_baudrate
);
711 spin_unlock_irqrestore(&self
->lock
, flags
);
714 case SIOCSMEDIABUSY
: /* Set media busy */
715 if (!capable(CAP_NET_ADMIN
)) {
720 irda_device_set_media_busy(self
->netdev
, TRUE
);
722 case SIOCGRECEIVING
: /* Check if we are receiving right now */
723 irq
->ifr_receiving
= smsc_ircc_is_receiving(self
);
727 if (!capable(CAP_NET_ADMIN
)) {
731 smsc_ircc_sir_set_dtr_rts(dev
, irq
->ifr_dtr
, irq
->ifr_rts
);
741 static struct net_device_stats
*smsc_ircc_net_get_stats(struct net_device
*dev
)
743 struct smsc_ircc_cb
*self
= netdev_priv(dev
);
748 #if SMSC_IRCC2_C_NET_TIMEOUT
750 * Function smsc_ircc_timeout (struct net_device *dev)
752 * The networking timeout management.
756 static void smsc_ircc_timeout(struct net_device
*dev
)
758 struct smsc_ircc_cb
*self
= netdev_priv(dev
);
761 IRDA_WARNING("%s: transmit timed out, changing speed to: %d\n",
762 dev
->name
, self
->io
.speed
);
763 spin_lock_irqsave(&self
->lock
, flags
);
764 smsc_ircc_sir_start(self
);
765 smsc_ircc_change_speed(self
, self
->io
.speed
);
766 dev
->trans_start
= jiffies
;
767 netif_wake_queue(dev
);
768 spin_unlock_irqrestore(&self
->lock
, flags
);
773 * Function smsc_ircc_hard_xmit_sir (struct sk_buff *skb, struct net_device *dev)
775 * Transmits the current frame until FIFO is full, then
776 * waits until the next transmit interrupt, and continues until the
777 * frame is transmitted.
779 int smsc_ircc_hard_xmit_sir(struct sk_buff
*skb
, struct net_device
*dev
)
781 struct smsc_ircc_cb
*self
;
785 IRDA_DEBUG(1, "%s\n", __FUNCTION__
);
787 IRDA_ASSERT(dev
!= NULL
, return 0;);
789 self
= netdev_priv(dev
);
790 IRDA_ASSERT(self
!= NULL
, return 0;);
792 netif_stop_queue(dev
);
794 /* Make sure test of self->io.speed & speed change are atomic */
795 spin_lock_irqsave(&self
->lock
, flags
);
797 /* Check if we need to change the speed */
798 speed
= irda_get_next_speed(skb
);
799 if (speed
!= self
->io
.speed
&& speed
!= -1) {
800 /* Check for empty frame */
803 * We send frames one by one in SIR mode (no
804 * pipelining), so at this point, if we were sending
805 * a previous frame, we just received the interrupt
806 * telling us it is finished (UART_IIR_THRI).
807 * Therefore, waiting for the transmitter to really
808 * finish draining the fifo won't take too long.
809 * And the interrupt handler is not expected to run.
811 smsc_ircc_sir_wait_hw_transmitter_finish(self
);
812 smsc_ircc_change_speed(self
, speed
);
813 spin_unlock_irqrestore(&self
->lock
, flags
);
817 self
->new_speed
= speed
;
821 self
->tx_buff
.data
= self
->tx_buff
.head
;
823 /* Copy skb to tx_buff while wrapping, stuffing and making CRC */
824 self
->tx_buff
.len
= async_wrap_skb(skb
, self
->tx_buff
.data
,
825 self
->tx_buff
.truesize
);
827 self
->stats
.tx_bytes
+= self
->tx_buff
.len
;
829 /* Turn on transmit finished interrupt. Will fire immediately! */
830 outb(UART_IER_THRI
, self
->io
.sir_base
+ UART_IER
);
832 spin_unlock_irqrestore(&self
->lock
, flags
);
840 * Function smsc_ircc_set_fir_speed (self, baud)
842 * Change the speed of the device
845 static void smsc_ircc_set_fir_speed(struct smsc_ircc_cb
*self
, u32 speed
)
847 int fir_base
, ir_mode
, ctrl
, fast
;
849 IRDA_ASSERT(self
!= NULL
, return;);
850 fir_base
= self
->io
.fir_base
;
852 self
->io
.speed
= speed
;
857 ir_mode
= IRCC_CFGA_IRDA_HDLC
;
860 IRDA_DEBUG(0, "%s(), handling baud of 576000\n", __FUNCTION__
);
863 ir_mode
= IRCC_CFGA_IRDA_HDLC
;
864 ctrl
= IRCC_1152
| IRCC_CRC
;
865 fast
= IRCC_LCR_A_FAST
| IRCC_LCR_A_GP_DATA
;
866 IRDA_DEBUG(0, "%s(), handling baud of 1152000\n",
870 ir_mode
= IRCC_CFGA_IRDA_4PPM
;
872 fast
= IRCC_LCR_A_FAST
;
873 IRDA_DEBUG(0, "%s(), handling baud of 4000000\n",
879 /* This causes an interrupt */
880 register_bank(fir_base
, 0);
881 outb((inb(fir_base
+ IRCC_LCR_A
) & 0xbf) | fast
, fir_base
+ IRCC_LCR_A
);
884 register_bank(fir_base
, 1);
885 outb(((inb(fir_base
+ IRCC_SCE_CFGA
) & IRCC_SCE_CFGA_BLOCK_CTRL_BITS_MASK
) | ir_mode
), fir_base
+ IRCC_SCE_CFGA
);
887 register_bank(fir_base
, 4);
888 outb((inb(fir_base
+ IRCC_CONTROL
) & 0x30) | ctrl
, fir_base
+ IRCC_CONTROL
);
892 * Function smsc_ircc_fir_start(self)
894 * Change the speed of the device
897 static void smsc_ircc_fir_start(struct smsc_ircc_cb
*self
)
899 struct net_device
*dev
;
902 IRDA_DEBUG(1, "%s\n", __FUNCTION__
);
904 IRDA_ASSERT(self
!= NULL
, return;);
906 IRDA_ASSERT(dev
!= NULL
, return;);
908 fir_base
= self
->io
.fir_base
;
910 /* Reset everything */
912 /* Install FIR transmit handler */
913 dev
->hard_start_xmit
= smsc_ircc_hard_xmit_fir
;
916 outb(inb(fir_base
+ IRCC_LCR_A
) | IRCC_LCR_A_FIFO_RESET
, fir_base
+ IRCC_LCR_A
);
918 /* Enable interrupt */
919 /*outb(IRCC_IER_ACTIVE_FRAME|IRCC_IER_EOM, fir_base + IRCC_IER);*/
921 register_bank(fir_base
, 1);
923 /* Select the TX/RX interface */
924 #ifdef SMSC_669 /* Uses pin 88/89 for Rx/Tx */
925 outb(((inb(fir_base
+ IRCC_SCE_CFGB
) & 0x3f) | IRCC_CFGB_MUX_COM
),
926 fir_base
+ IRCC_SCE_CFGB
);
928 outb(((inb(fir_base
+ IRCC_SCE_CFGB
) & 0x3f) | IRCC_CFGB_MUX_IR
),
929 fir_base
+ IRCC_SCE_CFGB
);
931 (void) inb(fir_base
+ IRCC_FIFO_THRESHOLD
);
933 /* Enable SCE interrupts */
934 outb(0, fir_base
+ IRCC_MASTER
);
935 register_bank(fir_base
, 0);
936 outb(IRCC_IER_ACTIVE_FRAME
| IRCC_IER_EOM
, fir_base
+ IRCC_IER
);
937 outb(IRCC_MASTER_INT_EN
, fir_base
+ IRCC_MASTER
);
941 * Function smsc_ircc_fir_stop(self, baud)
943 * Change the speed of the device
946 static void smsc_ircc_fir_stop(struct smsc_ircc_cb
*self
)
950 IRDA_DEBUG(1, "%s\n", __FUNCTION__
);
952 IRDA_ASSERT(self
!= NULL
, return;);
954 fir_base
= self
->io
.fir_base
;
955 register_bank(fir_base
, 0);
956 /*outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER);*/
957 outb(inb(fir_base
+ IRCC_LCR_B
) & IRCC_LCR_B_SIP_ENABLE
, fir_base
+ IRCC_LCR_B
);
962 * Function smsc_ircc_change_speed(self, baud)
964 * Change the speed of the device
966 * This function *must* be called with spinlock held, because it may
967 * be called from the irq handler. - Jean II
969 static void smsc_ircc_change_speed(struct smsc_ircc_cb
*self
, u32 speed
)
971 struct net_device
*dev
;
972 int last_speed_was_sir
;
974 IRDA_DEBUG(0, "%s() changing speed to: %d\n", __FUNCTION__
, speed
);
976 IRDA_ASSERT(self
!= NULL
, return;);
979 last_speed_was_sir
= self
->io
.speed
<= SMSC_IRCC2_MAX_SIR_SPEED
;
984 self
->io
.speed
= speed
;
985 last_speed_was_sir
= 0;
986 smsc_ircc_fir_start(self
);
989 if (self
->io
.speed
== 0)
990 smsc_ircc_sir_start(self
);
993 if (!last_speed_was_sir
) speed
= self
->io
.speed
;
996 if (self
->io
.speed
!= speed
)
997 smsc_ircc_set_transceiver_for_speed(self
, speed
);
999 self
->io
.speed
= speed
;
1001 if (speed
<= SMSC_IRCC2_MAX_SIR_SPEED
) {
1002 if (!last_speed_was_sir
) {
1003 smsc_ircc_fir_stop(self
);
1004 smsc_ircc_sir_start(self
);
1006 smsc_ircc_set_sir_speed(self
, speed
);
1008 if (last_speed_was_sir
) {
1009 #if SMSC_IRCC2_C_SIR_STOP
1010 smsc_ircc_sir_stop(self
);
1012 smsc_ircc_fir_start(self
);
1014 smsc_ircc_set_fir_speed(self
, speed
);
1017 self
->tx_buff
.len
= 10;
1018 self
->tx_buff
.data
= self
->tx_buff
.head
;
1020 smsc_ircc_dma_xmit(self
, 4000);
1022 /* Be ready for incoming frames */
1023 smsc_ircc_dma_receive(self
);
1026 netif_wake_queue(dev
);
1030 * Function smsc_ircc_set_sir_speed (self, speed)
1032 * Set speed of IrDA port to specified baudrate
1035 void smsc_ircc_set_sir_speed(struct smsc_ircc_cb
*self
, __u32 speed
)
1038 int fcr
; /* FIFO control reg */
1039 int lcr
; /* Line control reg */
1042 IRDA_DEBUG(0, "%s(), Setting speed to: %d\n", __FUNCTION__
, speed
);
1044 IRDA_ASSERT(self
!= NULL
, return;);
1045 iobase
= self
->io
.sir_base
;
1047 /* Update accounting for new speed */
1048 self
->io
.speed
= speed
;
1050 /* Turn off interrupts */
1051 outb(0, iobase
+ UART_IER
);
1053 divisor
= SMSC_IRCC2_MAX_SIR_SPEED
/ speed
;
1055 fcr
= UART_FCR_ENABLE_FIFO
;
1058 * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and
1059 * almost 1,7 ms at 19200 bps. At speeds above that we can just forget
1060 * about this timeout since it will always be fast enough.
1062 fcr
|= self
->io
.speed
< 38400 ?
1063 UART_FCR_TRIGGER_1
: UART_FCR_TRIGGER_14
;
1065 /* IrDA ports use 8N1 */
1066 lcr
= UART_LCR_WLEN8
;
1068 outb(UART_LCR_DLAB
| lcr
, iobase
+ UART_LCR
); /* Set DLAB */
1069 outb(divisor
& 0xff, iobase
+ UART_DLL
); /* Set speed */
1070 outb(divisor
>> 8, iobase
+ UART_DLM
);
1071 outb(lcr
, iobase
+ UART_LCR
); /* Set 8N1 */
1072 outb(fcr
, iobase
+ UART_FCR
); /* Enable FIFO's */
1074 /* Turn on interrups */
1075 outb(UART_IER_RLSI
| UART_IER_RDI
| UART_IER_THRI
, iobase
+ UART_IER
);
1077 IRDA_DEBUG(2, "%s() speed changed to: %d\n", __FUNCTION__
, speed
);
1082 * Function smsc_ircc_hard_xmit_fir (skb, dev)
1084 * Transmit the frame!
1087 static int smsc_ircc_hard_xmit_fir(struct sk_buff
*skb
, struct net_device
*dev
)
1089 struct smsc_ircc_cb
*self
;
1090 unsigned long flags
;
1094 IRDA_ASSERT(dev
!= NULL
, return 0;);
1095 self
= netdev_priv(dev
);
1096 IRDA_ASSERT(self
!= NULL
, return 0;);
1098 netif_stop_queue(dev
);
1100 /* Make sure test of self->io.speed & speed change are atomic */
1101 spin_lock_irqsave(&self
->lock
, flags
);
1103 /* Check if we need to change the speed after this frame */
1104 speed
= irda_get_next_speed(skb
);
1105 if (speed
!= self
->io
.speed
&& speed
!= -1) {
1106 /* Check for empty frame */
1108 /* Note : you should make sure that speed changes
1109 * are not going to corrupt any outgoing frame.
1110 * Look at nsc-ircc for the gory details - Jean II */
1111 smsc_ircc_change_speed(self
, speed
);
1112 spin_unlock_irqrestore(&self
->lock
, flags
);
1117 self
->new_speed
= speed
;
1120 memcpy(self
->tx_buff
.head
, skb
->data
, skb
->len
);
1122 self
->tx_buff
.len
= skb
->len
;
1123 self
->tx_buff
.data
= self
->tx_buff
.head
;
1125 mtt
= irda_get_mtt(skb
);
1130 * Compute how many BOFs (STA or PA's) we need to waste the
1131 * min turn time given the speed of the link.
1133 bofs
= mtt
* (self
->io
.speed
/ 1000) / 8000;
1137 smsc_ircc_dma_xmit(self
, bofs
);
1139 /* Transmit frame */
1140 smsc_ircc_dma_xmit(self
, 0);
1143 spin_unlock_irqrestore(&self
->lock
, flags
);
1150 * Function smsc_ircc_dma_xmit (self, bofs)
1152 * Transmit data using DMA
1155 static void smsc_ircc_dma_xmit(struct smsc_ircc_cb
*self
, int bofs
)
1157 int iobase
= self
->io
.fir_base
;
1160 IRDA_DEBUG(3, "%s\n", __FUNCTION__
);
1163 register_bank(iobase
, 0);
1164 outb(0x00, iobase
+ IRCC_LCR_B
);
1166 register_bank(iobase
, 1);
1167 outb(inb(iobase
+ IRCC_SCE_CFGB
) & ~IRCC_CFGB_DMA_ENABLE
,
1168 iobase
+ IRCC_SCE_CFGB
);
1170 self
->io
.direction
= IO_XMIT
;
1172 /* Set BOF additional count for generating the min turn time */
1173 register_bank(iobase
, 4);
1174 outb(bofs
& 0xff, iobase
+ IRCC_BOF_COUNT_LO
);
1175 ctrl
= inb(iobase
+ IRCC_CONTROL
) & 0xf0;
1176 outb(ctrl
| ((bofs
>> 8) & 0x0f), iobase
+ IRCC_BOF_COUNT_HI
);
1178 /* Set max Tx frame size */
1179 outb(self
->tx_buff
.len
>> 8, iobase
+ IRCC_TX_SIZE_HI
);
1180 outb(self
->tx_buff
.len
& 0xff, iobase
+ IRCC_TX_SIZE_LO
);
1182 /*outb(UART_MCR_OUT2, self->io.sir_base + UART_MCR);*/
1184 /* Enable burst mode chip Tx DMA */
1185 register_bank(iobase
, 1);
1186 outb(inb(iobase
+ IRCC_SCE_CFGB
) | IRCC_CFGB_DMA_ENABLE
|
1187 IRCC_CFGB_DMA_BURST
, iobase
+ IRCC_SCE_CFGB
);
1189 /* Setup DMA controller (must be done after enabling chip DMA) */
1190 irda_setup_dma(self
->io
.dma
, self
->tx_buff_dma
, self
->tx_buff
.len
,
1193 /* Enable interrupt */
1195 register_bank(iobase
, 0);
1196 outb(IRCC_IER_ACTIVE_FRAME
| IRCC_IER_EOM
, iobase
+ IRCC_IER
);
1197 outb(IRCC_MASTER_INT_EN
, iobase
+ IRCC_MASTER
);
1199 /* Enable transmit */
1200 outb(IRCC_LCR_B_SCE_TRANSMIT
| IRCC_LCR_B_SIP_ENABLE
, iobase
+ IRCC_LCR_B
);
1204 * Function smsc_ircc_dma_xmit_complete (self)
1206 * The transfer of a frame in finished. This function will only be called
1207 * by the interrupt handler
1210 static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb
*self
)
1212 int iobase
= self
->io
.fir_base
;
1214 IRDA_DEBUG(3, "%s\n", __FUNCTION__
);
1217 register_bank(iobase
, 0);
1218 outb(0x00, iobase
+ IRCC_LCR_B
);
1220 register_bank(iobase
, 1);
1221 outb(inb(iobase
+ IRCC_SCE_CFGB
) & ~IRCC_CFGB_DMA_ENABLE
,
1222 iobase
+ IRCC_SCE_CFGB
);
1224 /* Check for underrun! */
1225 register_bank(iobase
, 0);
1226 if (inb(iobase
+ IRCC_LSR
) & IRCC_LSR_UNDERRUN
) {
1227 self
->stats
.tx_errors
++;
1228 self
->stats
.tx_fifo_errors
++;
1230 /* Reset error condition */
1231 register_bank(iobase
, 0);
1232 outb(IRCC_MASTER_ERROR_RESET
, iobase
+ IRCC_MASTER
);
1233 outb(0x00, iobase
+ IRCC_MASTER
);
1235 self
->stats
.tx_packets
++;
1236 self
->stats
.tx_bytes
+= self
->tx_buff
.len
;
1239 /* Check if it's time to change the speed */
1240 if (self
->new_speed
) {
1241 smsc_ircc_change_speed(self
, self
->new_speed
);
1242 self
->new_speed
= 0;
1245 netif_wake_queue(self
->netdev
);
1249 * Function smsc_ircc_dma_receive(self)
1251 * Get ready for receiving a frame. The device will initiate a DMA
1252 * if it starts to receive a frame.
1255 static int smsc_ircc_dma_receive(struct smsc_ircc_cb
*self
)
1257 int iobase
= self
->io
.fir_base
;
1259 /* Turn off chip DMA */
1260 register_bank(iobase
, 1);
1261 outb(inb(iobase
+ IRCC_SCE_CFGB
) & ~IRCC_CFGB_DMA_ENABLE
,
1262 iobase
+ IRCC_SCE_CFGB
);
1266 register_bank(iobase
, 0);
1267 outb(0x00, iobase
+ IRCC_LCR_B
);
1269 /* Turn off chip DMA */
1270 register_bank(iobase
, 1);
1271 outb(inb(iobase
+ IRCC_SCE_CFGB
) & ~IRCC_CFGB_DMA_ENABLE
,
1272 iobase
+ IRCC_SCE_CFGB
);
1274 self
->io
.direction
= IO_RECV
;
1275 self
->rx_buff
.data
= self
->rx_buff
.head
;
1277 /* Set max Rx frame size */
1278 register_bank(iobase
, 4);
1279 outb((2050 >> 8) & 0x0f, iobase
+ IRCC_RX_SIZE_HI
);
1280 outb(2050 & 0xff, iobase
+ IRCC_RX_SIZE_LO
);
1282 /* Setup DMA controller */
1283 irda_setup_dma(self
->io
.dma
, self
->rx_buff_dma
, self
->rx_buff
.truesize
,
1286 /* Enable burst mode chip Rx DMA */
1287 register_bank(iobase
, 1);
1288 outb(inb(iobase
+ IRCC_SCE_CFGB
) | IRCC_CFGB_DMA_ENABLE
|
1289 IRCC_CFGB_DMA_BURST
, iobase
+ IRCC_SCE_CFGB
);
1291 /* Enable interrupt */
1292 register_bank(iobase
, 0);
1293 outb(IRCC_IER_ACTIVE_FRAME
| IRCC_IER_EOM
, iobase
+ IRCC_IER
);
1294 outb(IRCC_MASTER_INT_EN
, iobase
+ IRCC_MASTER
);
1296 /* Enable receiver */
1297 register_bank(iobase
, 0);
1298 outb(IRCC_LCR_B_SCE_RECEIVE
| IRCC_LCR_B_SIP_ENABLE
,
1299 iobase
+ IRCC_LCR_B
);
1305 * Function smsc_ircc_dma_receive_complete(self)
1307 * Finished with receiving frames
1310 static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb
*self
)
1312 struct sk_buff
*skb
;
1313 int len
, msgcnt
, lsr
;
1314 int iobase
= self
->io
.fir_base
;
1316 register_bank(iobase
, 0);
1318 IRDA_DEBUG(3, "%s\n", __FUNCTION__
);
1321 register_bank(iobase
, 0);
1322 outb(0x00, iobase
+ IRCC_LCR_B
);
1324 register_bank(iobase
, 0);
1325 outb(inb(iobase
+ IRCC_LSAR
) & ~IRCC_LSAR_ADDRESS_MASK
, iobase
+ IRCC_LSAR
);
1326 lsr
= inb(iobase
+ IRCC_LSR
);
1327 msgcnt
= inb(iobase
+ IRCC_LCR_B
) & 0x08;
1329 IRDA_DEBUG(2, "%s: dma count = %d\n", __FUNCTION__
,
1330 get_dma_residue(self
->io
.dma
));
1332 len
= self
->rx_buff
.truesize
- get_dma_residue(self
->io
.dma
);
1334 /* Look for errors */
1335 if (lsr
& (IRCC_LSR_FRAME_ERROR
| IRCC_LSR_CRC_ERROR
| IRCC_LSR_SIZE_ERROR
)) {
1336 self
->stats
.rx_errors
++;
1337 if (lsr
& IRCC_LSR_FRAME_ERROR
)
1338 self
->stats
.rx_frame_errors
++;
1339 if (lsr
& IRCC_LSR_CRC_ERROR
)
1340 self
->stats
.rx_crc_errors
++;
1341 if (lsr
& IRCC_LSR_SIZE_ERROR
)
1342 self
->stats
.rx_length_errors
++;
1343 if (lsr
& (IRCC_LSR_UNDERRUN
| IRCC_LSR_OVERRUN
))
1344 self
->stats
.rx_length_errors
++;
1349 len
-= self
->io
.speed
< 4000000 ? 2 : 4;
1351 if (len
< 2 || len
> 2050) {
1352 IRDA_WARNING("%s(), bogus len=%d\n", __FUNCTION__
, len
);
1355 IRDA_DEBUG(2, "%s: msgcnt = %d, len=%d\n", __FUNCTION__
, msgcnt
, len
);
1357 skb
= dev_alloc_skb(len
+ 1);
1359 IRDA_WARNING("%s(), memory squeeze, dropping frame.\n",
1363 /* Make sure IP header gets aligned */
1364 skb_reserve(skb
, 1);
1366 memcpy(skb_put(skb
, len
), self
->rx_buff
.data
, len
);
1367 self
->stats
.rx_packets
++;
1368 self
->stats
.rx_bytes
+= len
;
1370 skb
->dev
= self
->netdev
;
1371 skb
->mac
.raw
= skb
->data
;
1372 skb
->protocol
= htons(ETH_P_IRDA
);
1377 * Function smsc_ircc_sir_receive (self)
1379 * Receive one frame from the infrared port
1382 static void smsc_ircc_sir_receive(struct smsc_ircc_cb
*self
)
1387 IRDA_ASSERT(self
!= NULL
, return;);
1389 iobase
= self
->io
.sir_base
;
1392 * Receive all characters in Rx FIFO, unwrap and unstuff them.
1393 * async_unwrap_char will deliver all found frames
1396 async_unwrap_char(self
->netdev
, &self
->stats
, &self
->rx_buff
,
1397 inb(iobase
+ UART_RX
));
1399 /* Make sure we don't stay here to long */
1400 if (boguscount
++ > 32) {
1401 IRDA_DEBUG(2, "%s(), breaking!\n", __FUNCTION__
);
1404 } while (inb(iobase
+ UART_LSR
) & UART_LSR_DR
);
1409 * Function smsc_ircc_interrupt (irq, dev_id, regs)
1411 * An interrupt from the chip has arrived. Time to do some work
1414 static irqreturn_t
smsc_ircc_interrupt(int irq
, void *dev_id
, struct pt_regs
*regs
)
1416 struct net_device
*dev
= (struct net_device
*) dev_id
;
1417 struct smsc_ircc_cb
*self
;
1418 int iobase
, iir
, lcra
, lsr
;
1419 irqreturn_t ret
= IRQ_NONE
;
1422 printk(KERN_WARNING
"%s: irq %d for unknown device.\n",
1427 self
= netdev_priv(dev
);
1428 IRDA_ASSERT(self
!= NULL
, return IRQ_NONE
;);
1430 /* Serialise the interrupt handler in various CPUs, stop Tx path */
1431 spin_lock(&self
->lock
);
1433 /* Check if we should use the SIR interrupt handler */
1434 if (self
->io
.speed
<= SMSC_IRCC2_MAX_SIR_SPEED
) {
1435 ret
= smsc_ircc_interrupt_sir(dev
);
1436 goto irq_ret_unlock
;
1439 iobase
= self
->io
.fir_base
;
1441 register_bank(iobase
, 0);
1442 iir
= inb(iobase
+ IRCC_IIR
);
1444 goto irq_ret_unlock
;
1447 /* Disable interrupts */
1448 outb(0, iobase
+ IRCC_IER
);
1449 lcra
= inb(iobase
+ IRCC_LCR_A
);
1450 lsr
= inb(iobase
+ IRCC_LSR
);
1452 IRDA_DEBUG(2, "%s(), iir = 0x%02x\n", __FUNCTION__
, iir
);
1454 if (iir
& IRCC_IIR_EOM
) {
1455 if (self
->io
.direction
== IO_RECV
)
1456 smsc_ircc_dma_receive_complete(self
);
1458 smsc_ircc_dma_xmit_complete(self
);
1460 smsc_ircc_dma_receive(self
);
1463 if (iir
& IRCC_IIR_ACTIVE_FRAME
) {
1464 /*printk(KERN_WARNING "%s(): Active Frame\n", __FUNCTION__);*/
1467 /* Enable interrupts again */
1469 register_bank(iobase
, 0);
1470 outb(IRCC_IER_ACTIVE_FRAME
| IRCC_IER_EOM
, iobase
+ IRCC_IER
);
1473 spin_unlock(&self
->lock
);
1479 * Function irport_interrupt_sir (irq, dev_id, regs)
1481 * Interrupt handler for SIR modes
1483 static irqreturn_t
smsc_ircc_interrupt_sir(struct net_device
*dev
)
1485 struct smsc_ircc_cb
*self
= netdev_priv(dev
);
1490 /* Already locked comming here in smsc_ircc_interrupt() */
1491 /*spin_lock(&self->lock);*/
1493 iobase
= self
->io
.sir_base
;
1495 iir
= inb(iobase
+ UART_IIR
) & UART_IIR_ID
;
1499 /* Clear interrupt */
1500 lsr
= inb(iobase
+ UART_LSR
);
1502 IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n",
1503 __FUNCTION__
, iir
, lsr
, iobase
);
1507 IRDA_DEBUG(2, "%s(), RLSI\n", __FUNCTION__
);
1510 /* Receive interrupt */
1511 smsc_ircc_sir_receive(self
);
1514 if (lsr
& UART_LSR_THRE
)
1515 /* Transmitter ready for data */
1516 smsc_ircc_sir_write_wakeup(self
);
1519 IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n",
1524 /* Make sure we don't stay here to long */
1525 if (boguscount
++ > 100)
1528 iir
= inb(iobase
+ UART_IIR
) & UART_IIR_ID
;
1530 /*spin_unlock(&self->lock);*/
1537 * Function ircc_is_receiving (self)
1539 * Return TRUE is we are currently receiving a frame
1542 static int ircc_is_receiving(struct smsc_ircc_cb
*self
)
1547 IRDA_DEBUG(1, "%s\n", __FUNCTION__
);
1549 IRDA_ASSERT(self
!= NULL
, return FALSE
;);
1551 IRDA_DEBUG(0, "%s: dma count = %d\n", __FUNCTION__
,
1552 get_dma_residue(self
->io
.dma
));
1554 status
= (self
->rx_buff
.state
!= OUTSIDE_FRAME
);
1562 * Function smsc_ircc_net_open (dev)
1567 static int smsc_ircc_net_open(struct net_device
*dev
)
1569 struct smsc_ircc_cb
*self
;
1571 unsigned long flags
;
1573 IRDA_DEBUG(1, "%s\n", __FUNCTION__
);
1575 IRDA_ASSERT(dev
!= NULL
, return -1;);
1576 self
= netdev_priv(dev
);
1577 IRDA_ASSERT(self
!= NULL
, return 0;);
1579 if (request_irq(self
->io
.irq
, smsc_ircc_interrupt
, 0, dev
->name
,
1581 IRDA_DEBUG(0, "%s(), unable to allocate irq=%d\n",
1582 __FUNCTION__
, self
->io
.irq
);
1586 spin_lock_irqsave(&self
->lock
, flags
);
1587 /*smsc_ircc_sir_start(self);*/
1589 smsc_ircc_change_speed(self
, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED
);
1590 spin_unlock_irqrestore(&self
->lock
, flags
);
1592 /* Give self a hardware name */
1593 /* It would be cool to offer the chip revision here - Jean II */
1594 sprintf(hwname
, "SMSC @ 0x%03x", self
->io
.fir_base
);
1597 * Open new IrLAP layer instance, now that everything should be
1598 * initialized properly
1600 self
->irlap
= irlap_open(dev
, &self
->qos
, hwname
);
1603 * Always allocate the DMA channel after the IRQ,
1604 * and clean up on failure.
1606 if (request_dma(self
->io
.dma
, dev
->name
)) {
1607 smsc_ircc_net_close(dev
);
1609 IRDA_WARNING("%s(), unable to allocate DMA=%d\n",
1610 __FUNCTION__
, self
->io
.dma
);
1614 netif_start_queue(dev
);
1620 * Function smsc_ircc_net_close (dev)
1625 static int smsc_ircc_net_close(struct net_device
*dev
)
1627 struct smsc_ircc_cb
*self
;
1629 IRDA_DEBUG(1, "%s\n", __FUNCTION__
);
1631 IRDA_ASSERT(dev
!= NULL
, return -1;);
1632 self
= netdev_priv(dev
);
1633 IRDA_ASSERT(self
!= NULL
, return 0;);
1636 netif_stop_queue(dev
);
1638 /* Stop and remove instance of IrLAP */
1640 irlap_close(self
->irlap
);
1643 free_irq(self
->io
.irq
, dev
);
1644 disable_dma(self
->io
.dma
);
1645 free_dma(self
->io
.dma
);
1650 static int smsc_ircc_suspend(struct device
*dev
, pm_message_t state
)
1652 struct smsc_ircc_cb
*self
= dev_get_drvdata(dev
);
1654 IRDA_MESSAGE("%s, Suspending\n", driver_name
);
1656 if (!self
->io
.suspended
) {
1657 smsc_ircc_net_close(self
->netdev
);
1658 self
->io
.suspended
= 1;
1664 static int smsc_ircc_resume(struct device
*dev
)
1666 struct smsc_ircc_cb
*self
= dev_get_drvdata(dev
);
1668 if (self
->io
.suspended
) {
1670 smsc_ircc_net_open(self
->netdev
);
1671 self
->io
.suspended
= 0;
1673 IRDA_MESSAGE("%s, Waking up\n", driver_name
);
1679 * Function smsc_ircc_close (self)
1681 * Close driver instance
1684 static int __exit
smsc_ircc_close(struct smsc_ircc_cb
*self
)
1687 unsigned long flags
;
1689 IRDA_DEBUG(1, "%s\n", __FUNCTION__
);
1691 IRDA_ASSERT(self
!= NULL
, return -1;);
1693 platform_device_unregister(self
->pldev
);
1695 /* Remove netdevice */
1696 unregister_netdev(self
->netdev
);
1698 /* Make sure the irq handler is not exectuting */
1699 spin_lock_irqsave(&self
->lock
, flags
);
1701 /* Stop interrupts */
1702 iobase
= self
->io
.fir_base
;
1703 register_bank(iobase
, 0);
1704 outb(0, iobase
+ IRCC_IER
);
1705 outb(IRCC_MASTER_RESET
, iobase
+ IRCC_MASTER
);
1706 outb(0x00, iobase
+ IRCC_MASTER
);
1708 /* Reset to SIR mode */
1709 register_bank(iobase
, 1);
1710 outb(IRCC_CFGA_IRDA_SIR_A
|IRCC_CFGA_TX_POLARITY
, iobase
+ IRCC_SCE_CFGA
);
1711 outb(IRCC_CFGB_IR
, iobase
+ IRCC_SCE_CFGB
);
1713 spin_unlock_irqrestore(&self
->lock
, flags
);
1715 /* Release the PORTS that this driver is using */
1716 IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __FUNCTION__
,
1719 release_region(self
->io
.fir_base
, self
->io
.fir_ext
);
1721 IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __FUNCTION__
,
1724 release_region(self
->io
.sir_base
, self
->io
.sir_ext
);
1726 if (self
->tx_buff
.head
)
1727 dma_free_coherent(NULL
, self
->tx_buff
.truesize
,
1728 self
->tx_buff
.head
, self
->tx_buff_dma
);
1730 if (self
->rx_buff
.head
)
1731 dma_free_coherent(NULL
, self
->rx_buff
.truesize
,
1732 self
->rx_buff
.head
, self
->rx_buff_dma
);
1734 free_netdev(self
->netdev
);
1739 static void __exit
smsc_ircc_cleanup(void)
1743 IRDA_DEBUG(1, "%s\n", __FUNCTION__
);
1745 for (i
= 0; i
< 2; i
++) {
1747 smsc_ircc_close(dev_self
[i
]);
1750 driver_unregister(&smsc_ircc_driver
);
1754 * Start SIR operations
1756 * This function *must* be called with spinlock held, because it may
1757 * be called from the irq handler (via smsc_ircc_change_speed()). - Jean II
1759 void smsc_ircc_sir_start(struct smsc_ircc_cb
*self
)
1761 struct net_device
*dev
;
1762 int fir_base
, sir_base
;
1764 IRDA_DEBUG(3, "%s\n", __FUNCTION__
);
1766 IRDA_ASSERT(self
!= NULL
, return;);
1768 IRDA_ASSERT(dev
!= NULL
, return;);
1769 dev
->hard_start_xmit
= &smsc_ircc_hard_xmit_sir
;
1771 fir_base
= self
->io
.fir_base
;
1772 sir_base
= self
->io
.sir_base
;
1774 /* Reset everything */
1775 outb(IRCC_MASTER_RESET
, fir_base
+ IRCC_MASTER
);
1777 #if SMSC_IRCC2_C_SIR_STOP
1778 /*smsc_ircc_sir_stop(self);*/
1781 register_bank(fir_base
, 1);
1782 outb(((inb(fir_base
+ IRCC_SCE_CFGA
) & IRCC_SCE_CFGA_BLOCK_CTRL_BITS_MASK
) | IRCC_CFGA_IRDA_SIR_A
), fir_base
+ IRCC_SCE_CFGA
);
1784 /* Initialize UART */
1785 outb(UART_LCR_WLEN8
, sir_base
+ UART_LCR
); /* Reset DLAB */
1786 outb((UART_MCR_DTR
| UART_MCR_RTS
| UART_MCR_OUT2
), sir_base
+ UART_MCR
);
1788 /* Turn on interrups */
1789 outb(UART_IER_RLSI
| UART_IER_RDI
|UART_IER_THRI
, sir_base
+ UART_IER
);
1791 IRDA_DEBUG(3, "%s() - exit\n", __FUNCTION__
);
1793 outb(0x00, fir_base
+ IRCC_MASTER
);
1796 #if SMSC_IRCC2_C_SIR_STOP
1797 void smsc_ircc_sir_stop(struct smsc_ircc_cb
*self
)
1801 IRDA_DEBUG(3, "%s\n", __FUNCTION__
);
1802 iobase
= self
->io
.sir_base
;
1805 outb(0, iobase
+ UART_MCR
);
1807 /* Turn off interrupts */
1808 outb(0, iobase
+ UART_IER
);
1813 * Function smsc_sir_write_wakeup (self)
1815 * Called by the SIR interrupt handler when there's room for more data.
1816 * If we have more packets to send, we send them here.
1819 static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb
*self
)
1825 IRDA_ASSERT(self
!= NULL
, return;);
1827 IRDA_DEBUG(4, "%s\n", __FUNCTION__
);
1829 iobase
= self
->io
.sir_base
;
1831 /* Finished with frame? */
1832 if (self
->tx_buff
.len
> 0) {
1833 /* Write data left in transmit buffer */
1834 actual
= smsc_ircc_sir_write(iobase
, self
->io
.fifo_size
,
1835 self
->tx_buff
.data
, self
->tx_buff
.len
);
1836 self
->tx_buff
.data
+= actual
;
1837 self
->tx_buff
.len
-= actual
;
1840 /*if (self->tx_buff.len ==0) {*/
1843 * Now serial buffer is almost free & we can start
1844 * transmission of another packet. But first we must check
1845 * if we need to change the speed of the hardware
1847 if (self
->new_speed
) {
1848 IRDA_DEBUG(5, "%s(), Changing speed to %d.\n",
1849 __FUNCTION__
, self
->new_speed
);
1850 smsc_ircc_sir_wait_hw_transmitter_finish(self
);
1851 smsc_ircc_change_speed(self
, self
->new_speed
);
1852 self
->new_speed
= 0;
1854 /* Tell network layer that we want more frames */
1855 netif_wake_queue(self
->netdev
);
1857 self
->stats
.tx_packets
++;
1859 if (self
->io
.speed
<= 115200) {
1861 * Reset Rx FIFO to make sure that all reflected transmit data
1862 * is discarded. This is needed for half duplex operation
1864 fcr
= UART_FCR_ENABLE_FIFO
| UART_FCR_CLEAR_RCVR
;
1865 fcr
|= self
->io
.speed
< 38400 ?
1866 UART_FCR_TRIGGER_1
: UART_FCR_TRIGGER_14
;
1868 outb(fcr
, iobase
+ UART_FCR
);
1870 /* Turn on receive interrupts */
1871 outb(UART_IER_RDI
, iobase
+ UART_IER
);
1877 * Function smsc_ircc_sir_write (iobase, fifo_size, buf, len)
1879 * Fill Tx FIFO with transmit data
1882 static int smsc_ircc_sir_write(int iobase
, int fifo_size
, __u8
*buf
, int len
)
1886 /* Tx FIFO should be empty! */
1887 if (!(inb(iobase
+ UART_LSR
) & UART_LSR_THRE
)) {
1888 IRDA_WARNING("%s(), failed, fifo not empty!\n", __FUNCTION__
);
1892 /* Fill FIFO with current frame */
1893 while (fifo_size
-- > 0 && actual
< len
) {
1894 /* Transmit next byte */
1895 outb(buf
[actual
], iobase
+ UART_TX
);
1902 * Function smsc_ircc_is_receiving (self)
1904 * Returns true is we are currently receiving data
1907 static int smsc_ircc_is_receiving(struct smsc_ircc_cb
*self
)
1909 return (self
->rx_buff
.state
!= OUTSIDE_FRAME
);
1914 * Function smsc_ircc_probe_transceiver(self)
1916 * Tries to find the used Transceiver
1919 static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb
*self
)
1923 IRDA_ASSERT(self
!= NULL
, return;);
1925 for (i
= 0; smsc_transceivers
[i
].name
!= NULL
; i
++)
1926 if (smsc_transceivers
[i
].probe(self
->io
.fir_base
)) {
1927 IRDA_MESSAGE(" %s transceiver found\n",
1928 smsc_transceivers
[i
].name
);
1929 self
->transceiver
= i
+ 1;
1933 IRDA_MESSAGE("No transceiver found. Defaulting to %s\n",
1934 smsc_transceivers
[SMSC_IRCC2_C_DEFAULT_TRANSCEIVER
].name
);
1936 self
->transceiver
= SMSC_IRCC2_C_DEFAULT_TRANSCEIVER
;
1941 * Function smsc_ircc_set_transceiver_for_speed(self, speed)
1943 * Set the transceiver according to the speed
1946 static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb
*self
, u32 speed
)
1950 trx
= self
->transceiver
;
1952 smsc_transceivers
[trx
- 1].set_for_speed(self
->io
.fir_base
, speed
);
1956 * Function smsc_ircc_wait_hw_transmitter_finish ()
1958 * Wait for the real end of HW transmission
1960 * The UART is a strict FIFO, and we get called only when we have finished
1961 * pushing data to the FIFO, so the maximum amount of time we must wait
1962 * is only for the FIFO to drain out.
1964 * We use a simple calibrated loop. We may need to adjust the loop
1965 * delay (udelay) to balance I/O traffic and latency. And we also need to
1966 * adjust the maximum timeout.
1967 * It would probably be better to wait for the proper interrupt,
1968 * but it doesn't seem to be available.
1970 * We can't use jiffies or kernel timers because :
1971 * 1) We are called from the interrupt handler, which disable softirqs,
1972 * so jiffies won't be increased
1973 * 2) Jiffies granularity is usually very coarse (10ms), and we don't
1974 * want to wait that long to detect stuck hardware.
1978 static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb
*self
)
1980 int iobase
= self
->io
.sir_base
;
1981 int count
= SMSC_IRCC2_HW_TRANSMITTER_TIMEOUT_US
;
1983 /* Calibrated busy loop */
1984 while (count
-- > 0 && !(inb(iobase
+ UART_LSR
) & UART_LSR_TEMT
))
1988 IRDA_DEBUG(0, "%s(): stuck transmitter\n", __FUNCTION__
);
1997 static int __init
smsc_ircc_look_for_chips(void)
1999 struct smsc_chip_address
*address
;
2001 unsigned int cfg_base
, found
;
2004 address
= possible_addresses
;
2006 while (address
->cfg_base
) {
2007 cfg_base
= address
->cfg_base
;
2009 /*printk(KERN_WARNING "%s(): probing: 0x%02x for: 0x%02x\n", __FUNCTION__, cfg_base, address->type);*/
2011 if (address
->type
& SMSCSIO_TYPE_FDC
) {
2013 if (address
->type
& SMSCSIO_TYPE_FLAT
)
2014 if (!smsc_superio_flat(fdc_chips_flat
, cfg_base
, type
))
2017 if (address
->type
& SMSCSIO_TYPE_PAGED
)
2018 if (!smsc_superio_paged(fdc_chips_paged
, cfg_base
, type
))
2021 if (address
->type
& SMSCSIO_TYPE_LPC
) {
2023 if (address
->type
& SMSCSIO_TYPE_FLAT
)
2024 if (!smsc_superio_flat(lpc_chips_flat
, cfg_base
, type
))
2027 if (address
->type
& SMSCSIO_TYPE_PAGED
)
2028 if (!smsc_superio_paged(lpc_chips_paged
, cfg_base
, type
))
2037 * Function smsc_superio_flat (chip, base, type)
2039 * Try to get configuration of a smc SuperIO chip with flat register model
2042 static int __init
smsc_superio_flat(const struct smsc_chip
*chips
, unsigned short cfgbase
, char *type
)
2044 unsigned short firbase
, sirbase
;
2048 IRDA_DEBUG(1, "%s\n", __FUNCTION__
);
2050 if (smsc_ircc_probe(cfgbase
, SMSCSIOFLAT_DEVICEID_REG
, chips
, type
) == NULL
)
2053 outb(SMSCSIOFLAT_UARTMODE0C_REG
, cfgbase
);
2054 mode
= inb(cfgbase
+ 1);
2056 /*printk(KERN_WARNING "%s(): mode: 0x%02x\n", __FUNCTION__, mode);*/
2058 if (!(mode
& SMSCSIOFLAT_UART2MODE_VAL_IRDA
))
2059 IRDA_WARNING("%s(): IrDA not enabled\n", __FUNCTION__
);
2061 outb(SMSCSIOFLAT_UART2BASEADDR_REG
, cfgbase
);
2062 sirbase
= inb(cfgbase
+ 1) << 2;
2065 outb(SMSCSIOFLAT_FIRBASEADDR_REG
, cfgbase
);
2066 firbase
= inb(cfgbase
+ 1) << 3;
2069 outb(SMSCSIOFLAT_FIRDMASELECT_REG
, cfgbase
);
2070 dma
= inb(cfgbase
+ 1) & SMSCSIOFLAT_FIRDMASELECT_MASK
;
2073 outb(SMSCSIOFLAT_UARTIRQSELECT_REG
, cfgbase
);
2074 irq
= inb(cfgbase
+ 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK
;
2076 IRDA_MESSAGE("%s(): fir: 0x%02x, sir: 0x%02x, dma: %02d, irq: %d, mode: 0x%02x\n", __FUNCTION__
, firbase
, sirbase
, dma
, irq
, mode
);
2078 if (firbase
&& smsc_ircc_open(firbase
, sirbase
, dma
, irq
) == 0)
2081 /* Exit configuration */
2082 outb(SMSCSIO_CFGEXITKEY
, cfgbase
);
2088 * Function smsc_superio_paged (chip, base, type)
2090 * Try to get configuration of a smc SuperIO chip with paged register model
2093 static int __init
smsc_superio_paged(const struct smsc_chip
*chips
, unsigned short cfg_base
, char *type
)
2095 unsigned short fir_io
, sir_io
;
2098 IRDA_DEBUG(1, "%s\n", __FUNCTION__
);
2100 if (smsc_ircc_probe(cfg_base
, 0x20, chips
, type
) == NULL
)
2103 /* Select logical device (UART2) */
2104 outb(0x07, cfg_base
);
2105 outb(0x05, cfg_base
+ 1);
2108 outb(0x60, cfg_base
);
2109 sir_io
= inb(cfg_base
+ 1) << 8;
2110 outb(0x61, cfg_base
);
2111 sir_io
|= inb(cfg_base
+ 1);
2114 outb(0x62, cfg_base
);
2115 fir_io
= inb(cfg_base
+ 1) << 8;
2116 outb(0x63, cfg_base
);
2117 fir_io
|= inb(cfg_base
+ 1);
2118 outb(0x2b, cfg_base
); /* ??? */
2120 if (fir_io
&& smsc_ircc_open(fir_io
, sir_io
, ircc_dma
, ircc_irq
) == 0)
2123 /* Exit configuration */
2124 outb(SMSCSIO_CFGEXITKEY
, cfg_base
);
2130 static int __init
smsc_access(unsigned short cfg_base
, unsigned char reg
)
2132 IRDA_DEBUG(1, "%s\n", __FUNCTION__
);
2134 outb(reg
, cfg_base
);
2135 return inb(cfg_base
) != reg
? -1 : 0;
2138 static const struct smsc_chip
* __init
smsc_ircc_probe(unsigned short cfg_base
, u8 reg
, const struct smsc_chip
*chip
, char *type
)
2140 u8 devid
, xdevid
, rev
;
2142 IRDA_DEBUG(1, "%s\n", __FUNCTION__
);
2144 /* Leave configuration */
2146 outb(SMSCSIO_CFGEXITKEY
, cfg_base
);
2148 if (inb(cfg_base
) == SMSCSIO_CFGEXITKEY
) /* not a smc superio chip */
2151 outb(reg
, cfg_base
);
2153 xdevid
= inb(cfg_base
+ 1);
2155 /* Enter configuration */
2157 outb(SMSCSIO_CFGACCESSKEY
, cfg_base
);
2160 if (smsc_access(cfg_base
,0x55)) /* send second key and check */
2164 /* probe device ID */
2166 if (smsc_access(cfg_base
, reg
))
2169 devid
= inb(cfg_base
+ 1);
2171 if (devid
== 0 || devid
== 0xff) /* typical values for unused port */
2174 /* probe revision ID */
2176 if (smsc_access(cfg_base
, reg
+ 1))
2179 rev
= inb(cfg_base
+ 1);
2181 if (rev
>= 128) /* i think this will make no sense */
2184 if (devid
== xdevid
) /* protection against false positives */
2187 /* Check for expected device ID; are there others? */
2189 while (chip
->devid
!= devid
) {
2193 if (chip
->name
== NULL
)
2197 IRDA_MESSAGE("found SMC SuperIO Chip (devid=0x%02x rev=%02X base=0x%04x): %s%s\n",
2198 devid
, rev
, cfg_base
, type
, chip
->name
);
2200 if (chip
->rev
> rev
) {
2201 IRDA_MESSAGE("Revision higher than expected\n");
2205 if (chip
->flags
& NoIRDA
)
2206 IRDA_MESSAGE("chipset does not support IRDA\n");
2211 static int __init
smsc_superio_fdc(unsigned short cfg_base
)
2215 if (!request_region(cfg_base
, 2, driver_name
)) {
2216 IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n",
2217 __FUNCTION__
, cfg_base
);
2219 if (!smsc_superio_flat(fdc_chips_flat
, cfg_base
, "FDC") ||
2220 !smsc_superio_paged(fdc_chips_paged
, cfg_base
, "FDC"))
2223 release_region(cfg_base
, 2);
2229 static int __init
smsc_superio_lpc(unsigned short cfg_base
)
2233 if (!request_region(cfg_base
, 2, driver_name
)) {
2234 IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n",
2235 __FUNCTION__
, cfg_base
);
2237 if (!smsc_superio_flat(lpc_chips_flat
, cfg_base
, "LPC") ||
2238 !smsc_superio_paged(lpc_chips_paged
, cfg_base
, "LPC"))
2241 release_region(cfg_base
, 2);
2246 /************************************************
2248 * Transceivers specific functions
2250 ************************************************/
2254 * Function smsc_ircc_set_transceiver_smsc_ircc_atc(fir_base, speed)
2256 * Program transceiver through smsc-ircc ATC circuitry
2260 static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base
, u32 speed
)
2262 unsigned long jiffies_now
, jiffies_timeout
;
2265 jiffies_now
= jiffies
;
2266 jiffies_timeout
= jiffies
+ SMSC_IRCC2_ATC_PROGRAMMING_TIMEOUT_JIFFIES
;
2269 register_bank(fir_base
, 4);
2270 outb((inb(fir_base
+ IRCC_ATC
) & IRCC_ATC_MASK
) | IRCC_ATC_nPROGREADY
|IRCC_ATC_ENABLE
,
2271 fir_base
+ IRCC_ATC
);
2273 while ((val
= (inb(fir_base
+ IRCC_ATC
) & IRCC_ATC_nPROGREADY
)) &&
2274 !time_after(jiffies
, jiffies_timeout
))
2278 IRDA_WARNING("%s(): ATC: 0x%02x\n", __FUNCTION__
,
2279 inb(fir_base
+ IRCC_ATC
));
2283 * Function smsc_ircc_probe_transceiver_smsc_ircc_atc(fir_base)
2285 * Probe transceiver smsc-ircc ATC circuitry
2289 static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base
)
2295 * Function smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(self, speed)
2301 static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base
, u32 speed
)
2312 fast_mode
= IRCC_LCR_A_FAST
;
2315 register_bank(fir_base
, 0);
2316 outb((inb(fir_base
+ IRCC_LCR_A
) & 0xbf) | fast_mode
, fir_base
+ IRCC_LCR_A
);
2320 * Function smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(fir_base)
2326 static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base
)
2332 * Function smsc_ircc_set_transceiver_toshiba_sat1800(fir_base, speed)
2338 static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base
, u32 speed
)
2349 fast_mode
= /*IRCC_LCR_A_FAST |*/ IRCC_LCR_A_GP_DATA
;
2353 /* This causes an interrupt */
2354 register_bank(fir_base
, 0);
2355 outb((inb(fir_base
+ IRCC_LCR_A
) & 0xbf) | fast_mode
, fir_base
+ IRCC_LCR_A
);
2359 * Function smsc_ircc_probe_transceiver_toshiba_sat1800(fir_base)
2365 static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base
)
2371 module_init(smsc_ircc_init
);
2372 module_exit(smsc_ircc_cleanup
);