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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*********************************************************************
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 *
3 * Description: Driver for the SMC Infrared Communications Controller
4 * Status: Experimental.
5 * Author: Daniele Peri (peri@csai.unipa.it)
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07006 * Created at:
7 * Modified at:
8 * Modified by:
9 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070010 * Copyright (c) 2002 Daniele Peri
11 * All Rights Reserved.
12 * Copyright (c) 2002 Jean Tourrilhes
Linus Walleijc1e14a62006-04-05 22:33:59 -070013 * Copyright (c) 2006 Linus Walleij
Linus Torvalds1da177e2005-04-16 15:20:36 -070014 *
15 *
16 * Based on smc-ircc.c:
17 *
18 * Copyright (c) 2001 Stefani Seibold
19 * Copyright (c) 1999-2001 Dag Brattli
Dmitry Torokhov527b6af2005-09-06 15:19:17 -070020 * Copyright (c) 1998-1999 Thomas Davis,
Linus Torvalds1da177e2005-04-16 15:20:36 -070021 *
22 * and irport.c:
23 *
24 * Copyright (c) 1997, 1998, 1999-2000 Dag Brattli, All Rights Reserved.
25 *
Dmitry Torokhov527b6af2005-09-06 15:19:17 -070026 *
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
Linus Torvalds1da177e2005-04-16 15:20:36 -070030 * the License, or (at your option) any later version.
Dmitry Torokhov527b6af2005-09-06 15:19:17 -070031 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070032 * 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.
Dmitry Torokhov527b6af2005-09-06 15:19:17 -070036 *
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,
Linus Torvalds1da177e2005-04-16 15:20:36 -070040 * MA 02111-1307 USA
41 *
42 ********************************************************************/
43
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>
David Brownelld94c77b2006-05-09 15:26:11 -070056#include <linux/pnp.h>
Russell Kingd052d1b2005-10-29 19:07:23 +010057#include <linux/platform_device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070058
59#include <asm/io.h>
60#include <asm/dma.h>
61#include <asm/byteorder.h>
62
63#include <linux/spinlock.h>
64#include <linux/pm.h>
Linus Walleijc1e14a62006-04-05 22:33:59 -070065#ifdef CONFIG_PCI
66#include <linux/pci.h>
67#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070068
69#include <net/irda/wrapper.h>
70#include <net/irda/irda.h>
71#include <net/irda/irda_device.h>
72
73#include "smsc-ircc2.h"
74#include "smsc-sio.h"
75
Dmitry Torokhov98b77772005-09-06 15:19:19 -070076
77MODULE_AUTHOR("Daniele Peri <peri@csai.unipa.it>");
78MODULE_DESCRIPTION("SMC IrCC SIR/FIR controller driver");
79MODULE_LICENSE("GPL");
80
Bjorn Helgaascbcdd772007-07-01 12:06:49 -070081static int smsc_nopnp = 1;
Bjorn Helgaasd0d4f692007-05-08 00:36:05 -070082module_param_named(nopnp, smsc_nopnp, bool, 0);
Jonathan Bastien-Filiatrault32db9272007-09-26 22:34:25 -070083MODULE_PARM_DESC(nopnp, "Do not use PNP to detect controller settings, defaults to true");
Bjorn Helgaasd0d4f692007-05-08 00:36:05 -070084
Bjorn Helgaas916f11c2007-05-08 00:36:02 -070085#define DMA_INVAL 255
86static int ircc_dma = DMA_INVAL;
Dmitry Torokhov98b77772005-09-06 15:19:19 -070087module_param(ircc_dma, int, 0);
88MODULE_PARM_DESC(ircc_dma, "DMA channel");
89
Bjorn Helgaas916f11c2007-05-08 00:36:02 -070090#define IRQ_INVAL 255
91static int ircc_irq = IRQ_INVAL;
Dmitry Torokhov98b77772005-09-06 15:19:19 -070092module_param(ircc_irq, int, 0);
93MODULE_PARM_DESC(ircc_irq, "IRQ line");
94
95static int ircc_fir;
96module_param(ircc_fir, int, 0);
97MODULE_PARM_DESC(ircc_fir, "FIR Base Address");
98
99static int ircc_sir;
100module_param(ircc_sir, int, 0);
101MODULE_PARM_DESC(ircc_sir, "SIR Base Address");
102
103static int ircc_cfg;
104module_param(ircc_cfg, int, 0);
105MODULE_PARM_DESC(ircc_cfg, "Configuration register base address");
106
107static int ircc_transceiver;
108module_param(ircc_transceiver, int, 0);
109MODULE_PARM_DESC(ircc_transceiver, "Transceiver type");
110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111/* Types */
112
Linus Walleijc1e14a62006-04-05 22:33:59 -0700113#ifdef CONFIG_PCI
114struct smsc_ircc_subsystem_configuration {
115 unsigned short vendor; /* PCI vendor ID */
116 unsigned short device; /* PCI vendor ID */
117 unsigned short subvendor; /* PCI subsystem vendor ID */
118 unsigned short subdevice; /* PCI sybsystem device ID */
119 unsigned short sir_io; /* I/O port for SIR */
120 unsigned short fir_io; /* I/O port for FIR */
121 unsigned char fir_irq; /* FIR IRQ */
122 unsigned char fir_dma; /* FIR DMA */
123 unsigned short cfg_base; /* I/O port for chip configuration */
124 int (*preconfigure)(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf); /* Preconfig function */
125 const char *name; /* name shown as info */
126};
127#endif
128
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129struct smsc_transceiver {
130 char *name;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700131 void (*set_for_speed)(int fir_base, u32 speed);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 int (*probe)(int fir_base);
133};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134
135struct smsc_chip {
136 char *name;
137 #if 0
138 u8 type;
139 #endif
140 u16 flags;
141 u8 devid;
142 u8 rev;
143};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144
145struct smsc_chip_address {
146 unsigned int cfg_base;
147 unsigned int type;
148};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149
150/* Private data for each instance */
151struct smsc_ircc_cb {
152 struct net_device *netdev; /* Yes! we are some kind of netdevice */
153 struct net_device_stats stats;
154 struct irlap_cb *irlap; /* The link layer we are binded to */
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700155
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156 chipio_t io; /* IrDA controller information */
157 iobuff_t tx_buff; /* Transmit buffer */
158 iobuff_t rx_buff; /* Receive buffer */
159 dma_addr_t tx_buff_dma;
160 dma_addr_t rx_buff_dma;
161
162 struct qos_info qos; /* QoS capabilities for this device */
163
164 spinlock_t lock; /* For serializing operations */
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700165
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166 __u32 new_speed;
167 __u32 flags; /* Interface flags */
168
169 int tx_buff_offsets[10]; /* Offsets between frames in tx_buff */
170 int tx_len; /* Number of frames in tx_buff */
171
172 int transceiver;
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -0700173 struct platform_device *pldev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174};
175
176/* Constants */
177
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -0700178#define SMSC_IRCC2_DRIVER_NAME "smsc-ircc2"
179
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180#define SMSC_IRCC2_C_IRDA_FALLBACK_SPEED 9600
181#define SMSC_IRCC2_C_DEFAULT_TRANSCEIVER 1
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700182#define SMSC_IRCC2_C_NET_TIMEOUT 0
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183#define SMSC_IRCC2_C_SIR_STOP 0
184
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -0700185static const char *driver_name = SMSC_IRCC2_DRIVER_NAME;
186
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187/* Prototypes */
188
189static int smsc_ircc_open(unsigned int firbase, unsigned int sirbase, u8 dma, u8 irq);
190static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base);
191static void smsc_ircc_setup_io(struct smsc_ircc_cb *self, unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq);
192static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self);
193static void smsc_ircc_init_chip(struct smsc_ircc_cb *self);
194static int __exit smsc_ircc_close(struct smsc_ircc_cb *self);
Dmitry Torokhov80a90582005-09-06 15:19:21 -0700195static int smsc_ircc_dma_receive(struct smsc_ircc_cb *self);
196static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self);
198static int smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev);
199static int smsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev);
Dmitry Torokhov80a90582005-09-06 15:19:21 -0700200static void smsc_ircc_dma_xmit(struct smsc_ircc_cb *self, int bofs);
201static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self);
Dmitry Torokhov0fa2f492005-09-06 15:19:24 -0700202static void smsc_ircc_change_speed(struct smsc_ircc_cb *self, u32 speed);
203static void smsc_ircc_set_sir_speed(struct smsc_ircc_cb *self, u32 speed);
David Howells7d12e782006-10-05 14:55:46 +0100204static irqreturn_t smsc_ircc_interrupt(int irq, void *dev_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev);
206static void smsc_ircc_sir_start(struct smsc_ircc_cb *self);
207#if SMSC_IRCC2_C_SIR_STOP
208static void smsc_ircc_sir_stop(struct smsc_ircc_cb *self);
209#endif
210static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self);
211static int smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len);
212static int smsc_ircc_net_open(struct net_device *dev);
213static int smsc_ircc_net_close(struct net_device *dev);
214static int smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
215#if SMSC_IRCC2_C_NET_TIMEOUT
216static void smsc_ircc_timeout(struct net_device *dev);
217#endif
218static struct net_device_stats *smsc_ircc_net_get_stats(struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self);
220static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self);
221static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed);
222static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self);
223
224/* Probing */
225static int __init smsc_ircc_look_for_chips(void);
Dmitry Torokhovb6158d22005-09-06 15:19:20 -0700226static const struct smsc_chip * __init smsc_ircc_probe(unsigned short cfg_base, u8 reg, const struct smsc_chip *chip, char *type);
227static int __init smsc_superio_flat(const struct smsc_chip *chips, unsigned short cfg_base, char *type);
228static int __init smsc_superio_paged(const struct smsc_chip *chips, unsigned short cfg_base, char *type);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229static int __init smsc_superio_fdc(unsigned short cfg_base);
230static int __init smsc_superio_lpc(unsigned short cfg_base);
Linus Walleijc1e14a62006-04-05 22:33:59 -0700231#ifdef CONFIG_PCI
232static int __init preconfigure_smsc_chip(struct smsc_ircc_subsystem_configuration *conf);
233static int __init preconfigure_through_82801(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf);
Linus Walleij08d09992006-04-14 16:03:33 -0700234static void __init preconfigure_ali_port(struct pci_dev *dev,
235 unsigned short port);
Linus Walleijc1e14a62006-04-05 22:33:59 -0700236static int __init preconfigure_through_ali(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf);
237static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg,
238 unsigned short ircc_fir,
239 unsigned short ircc_sir,
240 unsigned char ircc_dma,
241 unsigned char ircc_irq);
242#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243
244/* Transceivers specific functions */
245
246static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed);
247static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base);
248static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed);
249static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base);
250static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed);
251static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base);
252
253/* Power Management */
254
Russell King3ae5eae2005-11-09 22:32:44 +0000255static int smsc_ircc_suspend(struct platform_device *dev, pm_message_t state);
256static int smsc_ircc_resume(struct platform_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257
Russell King3ae5eae2005-11-09 22:32:44 +0000258static struct platform_driver smsc_ircc_driver = {
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -0700259 .suspend = smsc_ircc_suspend,
260 .resume = smsc_ircc_resume,
Russell King3ae5eae2005-11-09 22:32:44 +0000261 .driver = {
262 .name = SMSC_IRCC2_DRIVER_NAME,
263 },
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -0700264};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265
266/* Transceivers for SMSC-ircc */
267
Dmitry Torokhovb6158d22005-09-06 15:19:20 -0700268static struct smsc_transceiver smsc_transceivers[] =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269{
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700270 { "Toshiba Satellite 1800 (GP data pin select)", smsc_ircc_set_transceiver_toshiba_sat1800, smsc_ircc_probe_transceiver_toshiba_sat1800 },
271 { "Fast pin select", smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select, smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select },
272 { "ATC IRMode", smsc_ircc_set_transceiver_smsc_ircc_atc, smsc_ircc_probe_transceiver_smsc_ircc_atc },
273 { NULL, NULL }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274};
Dmitry Torokhova956f4c2005-09-06 15:19:20 -0700275#define SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS (ARRAY_SIZE(smsc_transceivers) - 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276
277/* SMC SuperIO chipsets definitions */
278
279#define KEY55_1 0 /* SuperIO Configuration mode with Key <0x55> */
280#define KEY55_2 1 /* SuperIO Configuration mode with Key <0x55,0x55> */
281#define NoIRDA 2 /* SuperIO Chip has no IRDA Port */
282#define SIR 0 /* SuperIO Chip has only slow IRDA */
283#define FIR 4 /* SuperIO Chip has fast IRDA */
284#define SERx4 8 /* SuperIO Chip supports 115,2 KBaud * 4=460,8 KBaud */
285
Dmitry Torokhovb6158d22005-09-06 15:19:20 -0700286static struct smsc_chip __initdata fdc_chips_flat[] =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287{
288 /* Base address 0x3f0 or 0x370 */
289 { "37C44", KEY55_1|NoIRDA, 0x00, 0x00 }, /* This chip cannot be detected */
290 { "37C665GT", KEY55_2|NoIRDA, 0x65, 0x01 },
291 { "37C665GT", KEY55_2|NoIRDA, 0x66, 0x01 },
292 { "37C669", KEY55_2|SIR|SERx4, 0x03, 0x02 },
293 { "37C669", KEY55_2|SIR|SERx4, 0x04, 0x02 }, /* ID? */
294 { "37C78", KEY55_2|NoIRDA, 0x78, 0x00 },
295 { "37N769", KEY55_1|FIR|SERx4, 0x28, 0x00 },
296 { "37N869", KEY55_1|FIR|SERx4, 0x29, 0x00 },
297 { NULL }
298};
299
Dmitry Torokhovb6158d22005-09-06 15:19:20 -0700300static struct smsc_chip __initdata fdc_chips_paged[] =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301{
302 /* Base address 0x3f0 or 0x370 */
303 { "37B72X", KEY55_1|SIR|SERx4, 0x4c, 0x00 },
304 { "37B77X", KEY55_1|SIR|SERx4, 0x43, 0x00 },
305 { "37B78X", KEY55_1|SIR|SERx4, 0x44, 0x00 },
306 { "37B80X", KEY55_1|SIR|SERx4, 0x42, 0x00 },
307 { "37C67X", KEY55_1|FIR|SERx4, 0x40, 0x00 },
308 { "37C93X", KEY55_2|SIR|SERx4, 0x02, 0x01 },
309 { "37C93XAPM", KEY55_1|SIR|SERx4, 0x30, 0x01 },
310 { "37C93XFR", KEY55_2|FIR|SERx4, 0x03, 0x01 },
311 { "37M707", KEY55_1|SIR|SERx4, 0x42, 0x00 },
312 { "37M81X", KEY55_1|SIR|SERx4, 0x4d, 0x00 },
313 { "37N958FR", KEY55_1|FIR|SERx4, 0x09, 0x04 },
314 { "37N971", KEY55_1|FIR|SERx4, 0x0a, 0x00 },
315 { "37N972", KEY55_1|FIR|SERx4, 0x0b, 0x00 },
316 { NULL }
317};
318
Dmitry Torokhovb6158d22005-09-06 15:19:20 -0700319static struct smsc_chip __initdata lpc_chips_flat[] =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320{
321 /* Base address 0x2E or 0x4E */
322 { "47N227", KEY55_1|FIR|SERx4, 0x5a, 0x00 },
Peter Kovarafdf27c2007-03-16 20:39:25 -0700323 { "47N227", KEY55_1|FIR|SERx4, 0x7a, 0x00 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 { "47N267", KEY55_1|FIR|SERx4, 0x5e, 0x00 },
325 { NULL }
326};
327
Dmitry Torokhovb6158d22005-09-06 15:19:20 -0700328static struct smsc_chip __initdata lpc_chips_paged[] =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329{
330 /* Base address 0x2E or 0x4E */
331 { "47B27X", KEY55_1|SIR|SERx4, 0x51, 0x00 },
332 { "47B37X", KEY55_1|SIR|SERx4, 0x52, 0x00 },
333 { "47M10X", KEY55_1|SIR|SERx4, 0x59, 0x00 },
334 { "47M120", KEY55_1|NoIRDA|SERx4, 0x5c, 0x00 },
335 { "47M13X", KEY55_1|SIR|SERx4, 0x59, 0x00 },
336 { "47M14X", KEY55_1|SIR|SERx4, 0x5f, 0x00 },
337 { "47N252", KEY55_1|FIR|SERx4, 0x0e, 0x00 },
338 { "47S42X", KEY55_1|SIR|SERx4, 0x57, 0x00 },
339 { NULL }
340};
341
342#define SMSCSIO_TYPE_FDC 1
343#define SMSCSIO_TYPE_LPC 2
344#define SMSCSIO_TYPE_FLAT 4
345#define SMSCSIO_TYPE_PAGED 8
346
Dmitry Torokhovb6158d22005-09-06 15:19:20 -0700347static struct smsc_chip_address __initdata possible_addresses[] =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348{
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700349 { 0x3f0, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
350 { 0x370, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
351 { 0xe0, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
352 { 0x2e, SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
353 { 0x4e, SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED },
354 { 0, 0 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355};
356
357/* Globals */
358
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700359static struct smsc_ircc_cb *dev_self[] = { NULL, NULL };
360static unsigned short dev_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361
362static inline void register_bank(int iobase, int bank)
363{
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700364 outb(((inb(iobase + IRCC_MASTER) & 0xf0) | (bank & 0x07)),
365 iobase + IRCC_MASTER);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366}
367
David Brownelld94c77b2006-05-09 15:26:11 -0700368/* PNP hotplug support */
369static const struct pnp_device_id smsc_ircc_pnp_table[] = {
370 { .id = "SMCf010", .driver_data = 0 },
371 /* and presumably others */
372 { }
373};
374MODULE_DEVICE_TABLE(pnp, smsc_ircc_pnp_table);
Bjorn Helgaasd0d4f692007-05-08 00:36:05 -0700375
376static int pnp_driver_registered;
377
Ingo Molnar7a1aa302008-05-05 01:06:54 -0700378#ifdef CONFIG_PNP
Bjorn Helgaasd0d4f692007-05-08 00:36:05 -0700379static int __init smsc_ircc_pnp_probe(struct pnp_dev *dev,
380 const struct pnp_device_id *dev_id)
381{
382 unsigned int firbase, sirbase;
383 u8 dma, irq;
384
385 if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) &&
386 pnp_dma_valid(dev, 0) && pnp_irq_valid(dev, 0)))
387 return -EINVAL;
388
389 sirbase = pnp_port_start(dev, 0);
390 firbase = pnp_port_start(dev, 1);
391 dma = pnp_dma(dev, 0);
392 irq = pnp_irq(dev, 0);
393
394 if (smsc_ircc_open(firbase, sirbase, dma, irq))
395 return -ENODEV;
396
397 return 0;
398}
399
400static struct pnp_driver smsc_ircc_pnp_driver = {
401 .name = "smsc-ircc2",
402 .id_table = smsc_ircc_pnp_table,
403 .probe = smsc_ircc_pnp_probe,
404};
Ingo Molnar7a1aa302008-05-05 01:06:54 -0700405#else /* CONFIG_PNP */
406static struct pnp_driver smsc_ircc_pnp_driver;
407#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408
409/*******************************************************************************
410 *
411 *
412 * SMSC-ircc stuff
413 *
414 *
415 *******************************************************************************/
416
Bjorn Helgaasd0d4f692007-05-08 00:36:05 -0700417static int __init smsc_ircc_legacy_probe(void)
418{
419 int ret = 0;
420
Bjorn Helgaas7c31d2f2007-06-27 14:09:50 -0700421#ifdef CONFIG_PCI
422 if (smsc_ircc_preconfigure_subsystems(ircc_cfg, ircc_fir, ircc_sir, ircc_dma, ircc_irq) < 0) {
423 /* Ignore errors from preconfiguration */
424 IRDA_ERROR("%s, Preconfiguration failed !\n", driver_name);
425 }
426#endif
427
Bjorn Helgaasd0d4f692007-05-08 00:36:05 -0700428 if (ircc_fir > 0 && ircc_sir > 0) {
429 IRDA_MESSAGE(" Overriding FIR address 0x%04x\n", ircc_fir);
430 IRDA_MESSAGE(" Overriding SIR address 0x%04x\n", ircc_sir);
431
432 if (smsc_ircc_open(ircc_fir, ircc_sir, ircc_dma, ircc_irq))
433 ret = -ENODEV;
434 } else {
435 ret = -ENODEV;
436
437 /* try user provided configuration register base address */
438 if (ircc_cfg > 0) {
439 IRDA_MESSAGE(" Overriding configuration address "
440 "0x%04x\n", ircc_cfg);
441 if (!smsc_superio_fdc(ircc_cfg))
442 ret = 0;
443 if (!smsc_superio_lpc(ircc_cfg))
444 ret = 0;
445 }
446
447 if (smsc_ircc_look_for_chips() > 0)
448 ret = 0;
449 }
450 return ret;
451}
452
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453/*
454 * Function smsc_ircc_init ()
455 *
456 * Initialize chip. Just try to find out how many chips we are dealing with
457 * and where they are
458 */
459static int __init smsc_ircc_init(void)
460{
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -0700461 int ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462
Harvey Harrisona97a6f12008-07-30 17:20:18 -0700463 IRDA_DEBUG(1, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464
Russell King3ae5eae2005-11-09 22:32:44 +0000465 ret = platform_driver_register(&smsc_ircc_driver);
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -0700466 if (ret) {
467 IRDA_ERROR("%s, Can't register driver!\n", driver_name);
468 return ret;
469 }
470
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700471 dev_count = 0;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700472
Bjorn Helgaasd0d4f692007-05-08 00:36:05 -0700473 if (smsc_nopnp || !pnp_platform_devices ||
474 ircc_cfg || ircc_fir || ircc_sir ||
475 ircc_dma != DMA_INVAL || ircc_irq != IRQ_INVAL) {
476 ret = smsc_ircc_legacy_probe();
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -0700477 } else {
Bjorn Helgaasd0d4f692007-05-08 00:36:05 -0700478 if (pnp_register_driver(&smsc_ircc_pnp_driver) == 0)
479 pnp_driver_registered = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480 }
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700481
Bjorn Helgaasd0d4f692007-05-08 00:36:05 -0700482 if (ret) {
483 if (pnp_driver_registered)
484 pnp_unregister_driver(&smsc_ircc_pnp_driver);
Russell King3ae5eae2005-11-09 22:32:44 +0000485 platform_driver_unregister(&smsc_ircc_driver);
Bjorn Helgaasd0d4f692007-05-08 00:36:05 -0700486 }
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700487
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488 return ret;
489}
490
491/*
492 * Function smsc_ircc_open (firbase, sirbase, dma, irq)
493 *
494 * Try to open driver instance
495 *
496 */
497static int __init smsc_ircc_open(unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq)
498{
499 struct smsc_ircc_cb *self;
500 struct net_device *dev;
501 int err;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700502
Harvey Harrisona97a6f12008-07-30 17:20:18 -0700503 IRDA_DEBUG(1, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504
505 err = smsc_ircc_present(fir_base, sir_base);
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700506 if (err)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507 goto err_out;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700508
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509 err = -ENOMEM;
Dmitry Torokhova956f4c2005-09-06 15:19:20 -0700510 if (dev_count >= ARRAY_SIZE(dev_self)) {
Harvey Harrisona97a6f12008-07-30 17:20:18 -0700511 IRDA_WARNING("%s(), too many devices!\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 goto err_out1;
513 }
514
515 /*
516 * Allocate new instance of the driver
517 */
518 dev = alloc_irdadev(sizeof(struct smsc_ircc_cb));
519 if (!dev) {
Harvey Harrisona97a6f12008-07-30 17:20:18 -0700520 IRDA_WARNING("%s() can't allocate net device\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521 goto err_out1;
522 }
523
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524 dev->hard_start_xmit = smsc_ircc_hard_xmit_sir;
525#if SMSC_IRCC2_C_NET_TIMEOUT
526 dev->tx_timeout = smsc_ircc_timeout;
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700527 dev->watchdog_timeo = HZ * 2; /* Allow enough time for speed change */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528#endif
529 dev->open = smsc_ircc_net_open;
530 dev->stop = smsc_ircc_net_close;
531 dev->do_ioctl = smsc_ircc_net_ioctl;
532 dev->get_stats = smsc_ircc_net_get_stats;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700533
Dmitry Torokhovda0841a2005-09-06 15:19:23 -0700534 self = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 self->netdev = dev;
536
537 /* Make ifconfig display some details */
538 dev->base_addr = self->io.fir_base = fir_base;
539 dev->irq = self->io.irq = irq;
540
541 /* Need to store self somewhere */
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -0700542 dev_self[dev_count] = self;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543 spin_lock_init(&self->lock);
544
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700545 self->rx_buff.truesize = SMSC_IRCC2_RX_BUFF_TRUESIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546 self->tx_buff.truesize = SMSC_IRCC2_TX_BUFF_TRUESIZE;
547
548 self->rx_buff.head =
549 dma_alloc_coherent(NULL, self->rx_buff.truesize,
550 &self->rx_buff_dma, GFP_KERNEL);
551 if (self->rx_buff.head == NULL) {
552 IRDA_ERROR("%s, Can't allocate memory for receive buffer!\n",
553 driver_name);
554 goto err_out2;
555 }
556
557 self->tx_buff.head =
558 dma_alloc_coherent(NULL, self->tx_buff.truesize,
559 &self->tx_buff_dma, GFP_KERNEL);
560 if (self->tx_buff.head == NULL) {
561 IRDA_ERROR("%s, Can't allocate memory for transmit buffer!\n",
562 driver_name);
563 goto err_out3;
564 }
565
566 memset(self->rx_buff.head, 0, self->rx_buff.truesize);
567 memset(self->tx_buff.head, 0, self->tx_buff.truesize);
568
569 self->rx_buff.in_frame = FALSE;
570 self->rx_buff.state = OUTSIDE_FRAME;
571 self->tx_buff.data = self->tx_buff.head;
572 self->rx_buff.data = self->rx_buff.head;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700573
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575 smsc_ircc_setup_qos(self);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 smsc_ircc_init_chip(self);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700577
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700578 if (ircc_transceiver > 0 &&
579 ircc_transceiver < SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700580 self->transceiver = ircc_transceiver;
581 else
582 smsc_ircc_probe_transceiver(self);
583
584 err = register_netdev(self->netdev);
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700585 if (err) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586 IRDA_ERROR("%s, Network device registration failed!\n",
587 driver_name);
588 goto err_out4;
589 }
590
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -0700591 self->pldev = platform_device_register_simple(SMSC_IRCC2_DRIVER_NAME,
592 dev_count, NULL, 0);
593 if (IS_ERR(self->pldev)) {
594 err = PTR_ERR(self->pldev);
595 goto err_out5;
596 }
Russell King3ae5eae2005-11-09 22:32:44 +0000597 platform_set_drvdata(self->pldev, self);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598
599 IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -0700600 dev_count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601
602 return 0;
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700603
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -0700604 err_out5:
605 unregister_netdev(self->netdev);
606
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607 err_out4:
608 dma_free_coherent(NULL, self->tx_buff.truesize,
609 self->tx_buff.head, self->tx_buff_dma);
610 err_out3:
611 dma_free_coherent(NULL, self->rx_buff.truesize,
612 self->rx_buff.head, self->rx_buff_dma);
613 err_out2:
614 free_netdev(self->netdev);
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -0700615 dev_self[dev_count] = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616 err_out1:
617 release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT);
618 release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT);
619 err_out:
620 return err;
621}
622
623/*
624 * Function smsc_ircc_present(fir_base, sir_base)
625 *
626 * Check the smsc-ircc chip presence
627 *
628 */
629static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base)
630{
631 unsigned char low, high, chip, config, dma, irq, version;
632
633 if (!request_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT,
634 driver_name)) {
635 IRDA_WARNING("%s: can't get fir_base of 0x%03x\n",
Harvey Harrisona97a6f12008-07-30 17:20:18 -0700636 __func__, fir_base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700637 goto out1;
638 }
639
640 if (!request_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT,
641 driver_name)) {
642 IRDA_WARNING("%s: can't get sir_base of 0x%03x\n",
Harvey Harrisona97a6f12008-07-30 17:20:18 -0700643 __func__, sir_base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644 goto out2;
645 }
646
647 register_bank(fir_base, 3);
648
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700649 high = inb(fir_base + IRCC_ID_HIGH);
650 low = inb(fir_base + IRCC_ID_LOW);
651 chip = inb(fir_base + IRCC_CHIP_ID);
652 version = inb(fir_base + IRCC_VERSION);
653 config = inb(fir_base + IRCC_INTERFACE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700654 dma = config & IRCC_INTERFACE_DMA_MASK;
655 irq = (config & IRCC_INTERFACE_IRQ_MASK) >> 4;
656
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700657 if (high != 0x10 || low != 0xb8 || (chip != 0xf1 && chip != 0xf2)) {
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700658 IRDA_WARNING("%s(), addr 0x%04x - no device found!\n",
Harvey Harrisona97a6f12008-07-30 17:20:18 -0700659 __func__, fir_base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 goto out3;
661 }
662 IRDA_MESSAGE("SMsC IrDA Controller found\n IrCC version %d.%d, "
663 "firport 0x%03x, sirport 0x%03x dma=%d, irq=%d\n",
664 chip & 0x0f, version, fir_base, sir_base, dma, irq);
665
666 return 0;
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700667
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668 out3:
669 release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT);
670 out2:
671 release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT);
672 out1:
673 return -ENODEV;
674}
675
676/*
677 * Function smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq)
678 *
679 * Setup I/O
680 *
681 */
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700682static void smsc_ircc_setup_io(struct smsc_ircc_cb *self,
683 unsigned int fir_base, unsigned int sir_base,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684 u8 dma, u8 irq)
685{
686 unsigned char config, chip_dma, chip_irq;
687
688 register_bank(fir_base, 3);
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700689 config = inb(fir_base + IRCC_INTERFACE);
690 chip_dma = config & IRCC_INTERFACE_DMA_MASK;
691 chip_irq = (config & IRCC_INTERFACE_IRQ_MASK) >> 4;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692
693 self->io.fir_base = fir_base;
694 self->io.sir_base = sir_base;
695 self->io.fir_ext = SMSC_IRCC2_FIR_CHIP_IO_EXTENT;
696 self->io.sir_ext = SMSC_IRCC2_SIR_CHIP_IO_EXTENT;
697 self->io.fifo_size = SMSC_IRCC2_FIFO_SIZE;
698 self->io.speed = SMSC_IRCC2_C_IRDA_FALLBACK_SPEED;
699
Bjorn Helgaas916f11c2007-05-08 00:36:02 -0700700 if (irq != IRQ_INVAL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701 if (irq != chip_irq)
702 IRDA_MESSAGE("%s, Overriding IRQ - chip says %d, using %d\n",
703 driver_name, chip_irq, irq);
704 self->io.irq = irq;
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700705 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700706 self->io.irq = chip_irq;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700707
Bjorn Helgaas916f11c2007-05-08 00:36:02 -0700708 if (dma != DMA_INVAL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709 if (dma != chip_dma)
710 IRDA_MESSAGE("%s, Overriding DMA - chip says %d, using %d\n",
711 driver_name, chip_dma, dma);
712 self->io.dma = dma;
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700713 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714 self->io.dma = chip_dma;
715
716}
717
718/*
719 * Function smsc_ircc_setup_qos(self)
720 *
721 * Setup qos
722 *
723 */
724static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self)
725{
726 /* Initialize QoS for this device */
727 irda_init_max_qos_capabilies(&self->qos);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700728
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729 self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
730 IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8);
731
732 self->qos.min_turn_time.bits = SMSC_IRCC2_MIN_TURN_TIME;
733 self->qos.window_size.bits = SMSC_IRCC2_WINDOW_SIZE;
734 irda_qos_bits_to_value(&self->qos);
735}
736
737/*
738 * Function smsc_ircc_init_chip(self)
739 *
740 * Init chip
741 *
742 */
743static void smsc_ircc_init_chip(struct smsc_ircc_cb *self)
744{
Dmitry Torokhove812cb52005-10-30 15:00:14 -0800745 int iobase = self->io.fir_base;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746
747 register_bank(iobase, 0);
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700748 outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER);
749 outb(0x00, iobase + IRCC_MASTER);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700750
751 register_bank(iobase, 1);
Dmitry Torokhove812cb52005-10-30 15:00:14 -0800752 outb(((inb(iobase + IRCC_SCE_CFGA) & 0x87) | IRCC_CFGA_IRDA_SIR_A),
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700753 iobase + IRCC_SCE_CFGA);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754
755#ifdef smsc_669 /* Uses pin 88/89 for Rx/Tx */
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700756 outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM),
757 iobase + IRCC_SCE_CFGB);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700758#else
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700759 outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR),
760 iobase + IRCC_SCE_CFGB);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700761#endif
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700762 (void) inb(iobase + IRCC_FIFO_THRESHOLD);
763 outb(SMSC_IRCC2_FIFO_THRESHOLD, iobase + IRCC_FIFO_THRESHOLD);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700764
Linus Torvalds1da177e2005-04-16 15:20:36 -0700765 register_bank(iobase, 4);
Dmitry Torokhove812cb52005-10-30 15:00:14 -0800766 outb((inb(iobase + IRCC_CONTROL) & 0x30), iobase + IRCC_CONTROL);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700767
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 register_bank(iobase, 0);
Dmitry Torokhove812cb52005-10-30 15:00:14 -0800769 outb(0, iobase + IRCC_LCR_A);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770
771 smsc_ircc_set_sir_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700772
Linus Torvalds1da177e2005-04-16 15:20:36 -0700773 /* Power on device */
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700774 outb(0x00, iobase + IRCC_MASTER);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700775}
776
777/*
778 * Function smsc_ircc_net_ioctl (dev, rq, cmd)
779 *
780 * Process IOCTL commands for this device
781 *
782 */
783static int smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
784{
785 struct if_irda_req *irq = (struct if_irda_req *) rq;
786 struct smsc_ircc_cb *self;
787 unsigned long flags;
788 int ret = 0;
789
790 IRDA_ASSERT(dev != NULL, return -1;);
791
Dmitry Torokhovda0841a2005-09-06 15:19:23 -0700792 self = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793
794 IRDA_ASSERT(self != NULL, return -1;);
795
Harvey Harrisona97a6f12008-07-30 17:20:18 -0700796 IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __func__, dev->name, cmd);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700797
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798 switch (cmd) {
799 case SIOCSBANDWIDTH: /* Set bandwidth */
800 if (!capable(CAP_NET_ADMIN))
801 ret = -EPERM;
802 else {
803 /* Make sure we are the only one touching
804 * self->io.speed and the hardware - Jean II */
805 spin_lock_irqsave(&self->lock, flags);
806 smsc_ircc_change_speed(self, irq->ifr_baudrate);
807 spin_unlock_irqrestore(&self->lock, flags);
808 }
809 break;
810 case SIOCSMEDIABUSY: /* Set media busy */
811 if (!capable(CAP_NET_ADMIN)) {
812 ret = -EPERM;
813 break;
814 }
815
816 irda_device_set_media_busy(self->netdev, TRUE);
817 break;
818 case SIOCGRECEIVING: /* Check if we are receiving right now */
819 irq->ifr_receiving = smsc_ircc_is_receiving(self);
820 break;
821 #if 0
822 case SIOCSDTRRTS:
823 if (!capable(CAP_NET_ADMIN)) {
824 ret = -EPERM;
825 break;
826 }
827 smsc_ircc_sir_set_dtr_rts(dev, irq->ifr_dtr, irq->ifr_rts);
828 break;
829 #endif
830 default:
831 ret = -EOPNOTSUPP;
832 }
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700833
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834 return ret;
835}
836
837static struct net_device_stats *smsc_ircc_net_get_stats(struct net_device *dev)
838{
Dmitry Torokhovda0841a2005-09-06 15:19:23 -0700839 struct smsc_ircc_cb *self = netdev_priv(dev);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700840
Linus Torvalds1da177e2005-04-16 15:20:36 -0700841 return &self->stats;
842}
843
844#if SMSC_IRCC2_C_NET_TIMEOUT
845/*
846 * Function smsc_ircc_timeout (struct net_device *dev)
847 *
848 * The networking timeout management.
849 *
850 */
851
852static void smsc_ircc_timeout(struct net_device *dev)
853{
Dmitry Torokhovda0841a2005-09-06 15:19:23 -0700854 struct smsc_ircc_cb *self = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700855 unsigned long flags;
856
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857 IRDA_WARNING("%s: transmit timed out, changing speed to: %d\n",
858 dev->name, self->io.speed);
859 spin_lock_irqsave(&self->lock, flags);
860 smsc_ircc_sir_start(self);
861 smsc_ircc_change_speed(self, self->io.speed);
862 dev->trans_start = jiffies;
863 netif_wake_queue(dev);
864 spin_unlock_irqrestore(&self->lock, flags);
865}
866#endif
867
868/*
869 * Function smsc_ircc_hard_xmit_sir (struct sk_buff *skb, struct net_device *dev)
870 *
871 * Transmits the current frame until FIFO is full, then
872 * waits until the next transmit interrupt, and continues until the
873 * frame is transmitted.
874 */
875int smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev)
876{
877 struct smsc_ircc_cb *self;
878 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879 s32 speed;
880
Harvey Harrisona97a6f12008-07-30 17:20:18 -0700881 IRDA_DEBUG(1, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882
883 IRDA_ASSERT(dev != NULL, return 0;);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700884
Dmitry Torokhovda0841a2005-09-06 15:19:23 -0700885 self = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886 IRDA_ASSERT(self != NULL, return 0;);
887
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888 netif_stop_queue(dev);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700889
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890 /* Make sure test of self->io.speed & speed change are atomic */
891 spin_lock_irqsave(&self->lock, flags);
892
893 /* Check if we need to change the speed */
894 speed = irda_get_next_speed(skb);
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700895 if (speed != self->io.speed && speed != -1) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896 /* Check for empty frame */
897 if (!skb->len) {
898 /*
899 * We send frames one by one in SIR mode (no
900 * pipelining), so at this point, if we were sending
901 * a previous frame, we just received the interrupt
902 * telling us it is finished (UART_IIR_THRI).
903 * Therefore, waiting for the transmitter to really
904 * finish draining the fifo won't take too long.
905 * And the interrupt handler is not expected to run.
906 * - Jean II */
907 smsc_ircc_sir_wait_hw_transmitter_finish(self);
908 smsc_ircc_change_speed(self, speed);
909 spin_unlock_irqrestore(&self->lock, flags);
910 dev_kfree_skb(skb);
911 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912 }
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700913 self->new_speed = speed;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914 }
915
916 /* Init tx buffer */
917 self->tx_buff.data = self->tx_buff.head;
918
919 /* Copy skb to tx_buff while wrapping, stuffing and making CRC */
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700920 self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921 self->tx_buff.truesize);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700922
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923 self->stats.tx_bytes += self->tx_buff.len;
924
925 /* Turn on transmit finished interrupt. Will fire immediately! */
Dmitry Torokhov80a90582005-09-06 15:19:21 -0700926 outb(UART_IER_THRI, self->io.sir_base + UART_IER);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927
928 spin_unlock_irqrestore(&self->lock, flags);
929
930 dev_kfree_skb(skb);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700931
Linus Torvalds1da177e2005-04-16 15:20:36 -0700932 return 0;
933}
934
935/*
936 * Function smsc_ircc_set_fir_speed (self, baud)
937 *
938 * Change the speed of the device
939 *
940 */
941static void smsc_ircc_set_fir_speed(struct smsc_ircc_cb *self, u32 speed)
942{
943 int fir_base, ir_mode, ctrl, fast;
944
945 IRDA_ASSERT(self != NULL, return;);
946 fir_base = self->io.fir_base;
947
948 self->io.speed = speed;
949
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700950 switch (speed) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951 default:
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700952 case 576000:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700953 ir_mode = IRCC_CFGA_IRDA_HDLC;
954 ctrl = IRCC_CRC;
955 fast = 0;
Harvey Harrisona97a6f12008-07-30 17:20:18 -0700956 IRDA_DEBUG(0, "%s(), handling baud of 576000\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957 break;
958 case 1152000:
959 ir_mode = IRCC_CFGA_IRDA_HDLC;
960 ctrl = IRCC_1152 | IRCC_CRC;
961 fast = IRCC_LCR_A_FAST | IRCC_LCR_A_GP_DATA;
962 IRDA_DEBUG(0, "%s(), handling baud of 1152000\n",
Harvey Harrisona97a6f12008-07-30 17:20:18 -0700963 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700964 break;
965 case 4000000:
966 ir_mode = IRCC_CFGA_IRDA_4PPM;
967 ctrl = IRCC_CRC;
968 fast = IRCC_LCR_A_FAST;
969 IRDA_DEBUG(0, "%s(), handling baud of 4000000\n",
Harvey Harrisona97a6f12008-07-30 17:20:18 -0700970 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971 break;
972 }
973 #if 0
974 Now in tranceiver!
975 /* This causes an interrupt */
976 register_bank(fir_base, 0);
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700977 outb((inb(fir_base + IRCC_LCR_A) & 0xbf) | fast, fir_base + IRCC_LCR_A);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700978 #endif
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700979
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980 register_bank(fir_base, 1);
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700981 outb(((inb(fir_base + IRCC_SCE_CFGA) & IRCC_SCE_CFGA_BLOCK_CTRL_BITS_MASK) | ir_mode), fir_base + IRCC_SCE_CFGA);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -0700982
Linus Torvalds1da177e2005-04-16 15:20:36 -0700983 register_bank(fir_base, 4);
Dmitry Torokhov98b77772005-09-06 15:19:19 -0700984 outb((inb(fir_base + IRCC_CONTROL) & 0x30) | ctrl, fir_base + IRCC_CONTROL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700985}
986
987/*
988 * Function smsc_ircc_fir_start(self)
989 *
990 * Change the speed of the device
991 *
992 */
993static void smsc_ircc_fir_start(struct smsc_ircc_cb *self)
994{
995 struct net_device *dev;
996 int fir_base;
997
Harvey Harrisona97a6f12008-07-30 17:20:18 -0700998 IRDA_DEBUG(1, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999
1000 IRDA_ASSERT(self != NULL, return;);
1001 dev = self->netdev;
1002 IRDA_ASSERT(dev != NULL, return;);
1003
1004 fir_base = self->io.fir_base;
1005
1006 /* Reset everything */
1007
1008 /* Install FIR transmit handler */
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001009 dev->hard_start_xmit = smsc_ircc_hard_xmit_fir;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010
1011 /* Clear FIFO */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001012 outb(inb(fir_base + IRCC_LCR_A) | IRCC_LCR_A_FIFO_RESET, fir_base + IRCC_LCR_A);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001013
1014 /* Enable interrupt */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001015 /*outb(IRCC_IER_ACTIVE_FRAME|IRCC_IER_EOM, fir_base + IRCC_IER);*/
Linus Torvalds1da177e2005-04-16 15:20:36 -07001016
1017 register_bank(fir_base, 1);
1018
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001019 /* Select the TX/RX interface */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001020#ifdef SMSC_669 /* Uses pin 88/89 for Rx/Tx */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001021 outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM),
1022 fir_base + IRCC_SCE_CFGB);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001023#else
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001024 outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR),
1025 fir_base + IRCC_SCE_CFGB);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001026#endif
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001027 (void) inb(fir_base + IRCC_FIFO_THRESHOLD);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001028
1029 /* Enable SCE interrupts */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001030 outb(0, fir_base + IRCC_MASTER);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031 register_bank(fir_base, 0);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001032 outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, fir_base + IRCC_IER);
1033 outb(IRCC_MASTER_INT_EN, fir_base + IRCC_MASTER);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001034}
1035
1036/*
1037 * Function smsc_ircc_fir_stop(self, baud)
1038 *
1039 * Change the speed of the device
1040 *
1041 */
1042static void smsc_ircc_fir_stop(struct smsc_ircc_cb *self)
1043{
1044 int fir_base;
1045
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001046 IRDA_DEBUG(1, "%s\n", __func__);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001047
Linus Torvalds1da177e2005-04-16 15:20:36 -07001048 IRDA_ASSERT(self != NULL, return;);
1049
1050 fir_base = self->io.fir_base;
1051 register_bank(fir_base, 0);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001052 /*outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER);*/
1053 outb(inb(fir_base + IRCC_LCR_B) & IRCC_LCR_B_SIP_ENABLE, fir_base + IRCC_LCR_B);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001054}
1055
1056
1057/*
1058 * Function smsc_ircc_change_speed(self, baud)
1059 *
1060 * Change the speed of the device
1061 *
1062 * This function *must* be called with spinlock held, because it may
1063 * be called from the irq handler. - Jean II
1064 */
Dmitry Torokhov0fa2f492005-09-06 15:19:24 -07001065static void smsc_ircc_change_speed(struct smsc_ircc_cb *self, u32 speed)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001066{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001067 struct net_device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001068 int last_speed_was_sir;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001069
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001070 IRDA_DEBUG(0, "%s() changing speed to: %d\n", __func__, speed);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001071
1072 IRDA_ASSERT(self != NULL, return;);
1073 dev = self->netdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001074
1075 last_speed_was_sir = self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED;
1076
1077 #if 0
1078 /* Temp Hack */
1079 speed= 1152000;
1080 self->io.speed = speed;
1081 last_speed_was_sir = 0;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001082 smsc_ircc_fir_start(self);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001083 #endif
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001084
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001085 if (self->io.speed == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001086 smsc_ircc_sir_start(self);
1087
1088 #if 0
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001089 if (!last_speed_was_sir) speed = self->io.speed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001090 #endif
1091
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001092 if (self->io.speed != speed)
1093 smsc_ircc_set_transceiver_for_speed(self, speed);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001094
1095 self->io.speed = speed;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001096
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001097 if (speed <= SMSC_IRCC2_MAX_SIR_SPEED) {
1098 if (!last_speed_was_sir) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001099 smsc_ircc_fir_stop(self);
1100 smsc_ircc_sir_start(self);
1101 }
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001102 smsc_ircc_set_sir_speed(self, speed);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001103 } else {
1104 if (last_speed_was_sir) {
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001105 #if SMSC_IRCC2_C_SIR_STOP
Linus Torvalds1da177e2005-04-16 15:20:36 -07001106 smsc_ircc_sir_stop(self);
1107 #endif
1108 smsc_ircc_fir_start(self);
1109 }
1110 smsc_ircc_set_fir_speed(self, speed);
1111
1112 #if 0
1113 self->tx_buff.len = 10;
1114 self->tx_buff.data = self->tx_buff.head;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001115
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001116 smsc_ircc_dma_xmit(self, 4000);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001117 #endif
1118 /* Be ready for incoming frames */
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001119 smsc_ircc_dma_receive(self);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001120 }
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001121
Linus Torvalds1da177e2005-04-16 15:20:36 -07001122 netif_wake_queue(dev);
1123}
1124
1125/*
1126 * Function smsc_ircc_set_sir_speed (self, speed)
1127 *
1128 * Set speed of IrDA port to specified baudrate
1129 *
1130 */
Dmitry Torokhov0fa2f492005-09-06 15:19:24 -07001131void smsc_ircc_set_sir_speed(struct smsc_ircc_cb *self, __u32 speed)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001132{
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001133 int iobase;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001134 int fcr; /* FIFO control reg */
1135 int lcr; /* Line control reg */
1136 int divisor;
1137
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001138 IRDA_DEBUG(0, "%s(), Setting speed to: %d\n", __func__, speed);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001139
1140 IRDA_ASSERT(self != NULL, return;);
1141 iobase = self->io.sir_base;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001142
Linus Torvalds1da177e2005-04-16 15:20:36 -07001143 /* Update accounting for new speed */
1144 self->io.speed = speed;
1145
1146 /* Turn off interrupts */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001147 outb(0, iobase + UART_IER);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001148
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001149 divisor = SMSC_IRCC2_MAX_SIR_SPEED / speed;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001150
Linus Torvalds1da177e2005-04-16 15:20:36 -07001151 fcr = UART_FCR_ENABLE_FIFO;
1152
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001153 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001154 * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and
1155 * almost 1,7 ms at 19200 bps. At speeds above that we can just forget
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001156 * about this timeout since it will always be fast enough.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001157 */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001158 fcr |= self->io.speed < 38400 ?
1159 UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001160
Linus Torvalds1da177e2005-04-16 15:20:36 -07001161 /* IrDA ports use 8N1 */
1162 lcr = UART_LCR_WLEN8;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001163
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001164 outb(UART_LCR_DLAB | lcr, iobase + UART_LCR); /* Set DLAB */
1165 outb(divisor & 0xff, iobase + UART_DLL); /* Set speed */
1166 outb(divisor >> 8, iobase + UART_DLM);
1167 outb(lcr, iobase + UART_LCR); /* Set 8N1 */
1168 outb(fcr, iobase + UART_FCR); /* Enable FIFO's */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001169
1170 /* Turn on interrups */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001171 outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001172
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001173 IRDA_DEBUG(2, "%s() speed changed to: %d\n", __func__, speed);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001174}
1175
1176
1177/*
1178 * Function smsc_ircc_hard_xmit_fir (skb, dev)
1179 *
1180 * Transmit the frame!
1181 *
1182 */
1183static int smsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev)
1184{
1185 struct smsc_ircc_cb *self;
1186 unsigned long flags;
1187 s32 speed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001188 int mtt;
1189
1190 IRDA_ASSERT(dev != NULL, return 0;);
Dmitry Torokhovda0841a2005-09-06 15:19:23 -07001191 self = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001192 IRDA_ASSERT(self != NULL, return 0;);
1193
Linus Torvalds1da177e2005-04-16 15:20:36 -07001194 netif_stop_queue(dev);
1195
1196 /* Make sure test of self->io.speed & speed change are atomic */
1197 spin_lock_irqsave(&self->lock, flags);
1198
1199 /* Check if we need to change the speed after this frame */
1200 speed = irda_get_next_speed(skb);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001201 if (speed != self->io.speed && speed != -1) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001202 /* Check for empty frame */
1203 if (!skb->len) {
1204 /* Note : you should make sure that speed changes
1205 * are not going to corrupt any outgoing frame.
1206 * Look at nsc-ircc for the gory details - Jean II */
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001207 smsc_ircc_change_speed(self, speed);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001208 spin_unlock_irqrestore(&self->lock, flags);
1209 dev_kfree_skb(skb);
1210 return 0;
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001211 }
1212
1213 self->new_speed = speed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001214 }
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001215
Arnaldo Carvalho de Melod626f622007-03-27 18:55:52 -03001216 skb_copy_from_linear_data(skb, self->tx_buff.head, skb->len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001217
1218 self->tx_buff.len = skb->len;
1219 self->tx_buff.data = self->tx_buff.head;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001220
1221 mtt = irda_get_mtt(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001222 if (mtt) {
1223 int bofs;
1224
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001225 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001226 * Compute how many BOFs (STA or PA's) we need to waste the
1227 * min turn time given the speed of the link.
1228 */
1229 bofs = mtt * (self->io.speed / 1000) / 8000;
1230 if (bofs > 4095)
1231 bofs = 4095;
1232
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001233 smsc_ircc_dma_xmit(self, bofs);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001234 } else {
1235 /* Transmit frame */
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001236 smsc_ircc_dma_xmit(self, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001237 }
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001238
Linus Torvalds1da177e2005-04-16 15:20:36 -07001239 spin_unlock_irqrestore(&self->lock, flags);
1240 dev_kfree_skb(skb);
1241
1242 return 0;
1243}
1244
1245/*
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001246 * Function smsc_ircc_dma_xmit (self, bofs)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001247 *
1248 * Transmit data using DMA
1249 *
1250 */
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001251static void smsc_ircc_dma_xmit(struct smsc_ircc_cb *self, int bofs)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001252{
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001253 int iobase = self->io.fir_base;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001254 u8 ctrl;
1255
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001256 IRDA_DEBUG(3, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001257#if 1
1258 /* Disable Rx */
1259 register_bank(iobase, 0);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001260 outb(0x00, iobase + IRCC_LCR_B);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001261#endif
1262 register_bank(iobase, 1);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001263 outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE,
1264 iobase + IRCC_SCE_CFGB);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001265
1266 self->io.direction = IO_XMIT;
1267
1268 /* Set BOF additional count for generating the min turn time */
1269 register_bank(iobase, 4);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001270 outb(bofs & 0xff, iobase + IRCC_BOF_COUNT_LO);
1271 ctrl = inb(iobase + IRCC_CONTROL) & 0xf0;
1272 outb(ctrl | ((bofs >> 8) & 0x0f), iobase + IRCC_BOF_COUNT_HI);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001273
1274 /* Set max Tx frame size */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001275 outb(self->tx_buff.len >> 8, iobase + IRCC_TX_SIZE_HI);
1276 outb(self->tx_buff.len & 0xff, iobase + IRCC_TX_SIZE_LO);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001277
1278 /*outb(UART_MCR_OUT2, self->io.sir_base + UART_MCR);*/
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001279
Linus Torvalds1da177e2005-04-16 15:20:36 -07001280 /* Enable burst mode chip Tx DMA */
1281 register_bank(iobase, 1);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001282 outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE |
1283 IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001284
1285 /* Setup DMA controller (must be done after enabling chip DMA) */
1286 irda_setup_dma(self->io.dma, self->tx_buff_dma, self->tx_buff.len,
1287 DMA_TX_MODE);
1288
1289 /* Enable interrupt */
1290
1291 register_bank(iobase, 0);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001292 outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER);
1293 outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001294
Linus Torvalds1da177e2005-04-16 15:20:36 -07001295 /* Enable transmit */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001296 outb(IRCC_LCR_B_SCE_TRANSMIT | IRCC_LCR_B_SIP_ENABLE, iobase + IRCC_LCR_B);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297}
1298
1299/*
1300 * Function smsc_ircc_dma_xmit_complete (self)
1301 *
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001302 * The transfer of a frame in finished. This function will only be called
Linus Torvalds1da177e2005-04-16 15:20:36 -07001303 * by the interrupt handler
1304 *
1305 */
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001306static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001307{
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001308 int iobase = self->io.fir_base;
1309
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001310 IRDA_DEBUG(3, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001311#if 0
1312 /* Disable Tx */
1313 register_bank(iobase, 0);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001314 outb(0x00, iobase + IRCC_LCR_B);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001315#endif
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001316 register_bank(iobase, 1);
1317 outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE,
1318 iobase + IRCC_SCE_CFGB);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001319
1320 /* Check for underrun! */
1321 register_bank(iobase, 0);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001322 if (inb(iobase + IRCC_LSR) & IRCC_LSR_UNDERRUN) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001323 self->stats.tx_errors++;
1324 self->stats.tx_fifo_errors++;
1325
1326 /* Reset error condition */
1327 register_bank(iobase, 0);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001328 outb(IRCC_MASTER_ERROR_RESET, iobase + IRCC_MASTER);
1329 outb(0x00, iobase + IRCC_MASTER);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001330 } else {
1331 self->stats.tx_packets++;
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001332 self->stats.tx_bytes += self->tx_buff.len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001333 }
1334
1335 /* Check if it's time to change the speed */
1336 if (self->new_speed) {
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001337 smsc_ircc_change_speed(self, self->new_speed);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001338 self->new_speed = 0;
1339 }
1340
1341 netif_wake_queue(self->netdev);
1342}
1343
1344/*
1345 * Function smsc_ircc_dma_receive(self)
1346 *
1347 * Get ready for receiving a frame. The device will initiate a DMA
1348 * if it starts to receive a frame.
1349 *
1350 */
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001351static int smsc_ircc_dma_receive(struct smsc_ircc_cb *self)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001352{
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001353 int iobase = self->io.fir_base;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001354#if 0
1355 /* Turn off chip DMA */
1356 register_bank(iobase, 1);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001357 outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE,
1358 iobase + IRCC_SCE_CFGB);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001359#endif
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001360
Linus Torvalds1da177e2005-04-16 15:20:36 -07001361 /* Disable Tx */
1362 register_bank(iobase, 0);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001363 outb(0x00, iobase + IRCC_LCR_B);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001364
1365 /* Turn off chip DMA */
1366 register_bank(iobase, 1);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001367 outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE,
1368 iobase + IRCC_SCE_CFGB);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001369
1370 self->io.direction = IO_RECV;
1371 self->rx_buff.data = self->rx_buff.head;
1372
1373 /* Set max Rx frame size */
1374 register_bank(iobase, 4);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001375 outb((2050 >> 8) & 0x0f, iobase + IRCC_RX_SIZE_HI);
1376 outb(2050 & 0xff, iobase + IRCC_RX_SIZE_LO);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001377
1378 /* Setup DMA controller */
1379 irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize,
1380 DMA_RX_MODE);
1381
1382 /* Enable burst mode chip Rx DMA */
1383 register_bank(iobase, 1);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001384 outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE |
1385 IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001386
1387 /* Enable interrupt */
1388 register_bank(iobase, 0);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001389 outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER);
1390 outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001391
1392 /* Enable receiver */
1393 register_bank(iobase, 0);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001394 outb(IRCC_LCR_B_SCE_RECEIVE | IRCC_LCR_B_SIP_ENABLE,
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001395 iobase + IRCC_LCR_B);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001396
Linus Torvalds1da177e2005-04-16 15:20:36 -07001397 return 0;
1398}
1399
1400/*
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001401 * Function smsc_ircc_dma_receive_complete(self)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001402 *
1403 * Finished with receiving frames
1404 *
1405 */
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001406static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001407{
1408 struct sk_buff *skb;
1409 int len, msgcnt, lsr;
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001410 int iobase = self->io.fir_base;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001411
Linus Torvalds1da177e2005-04-16 15:20:36 -07001412 register_bank(iobase, 0);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001413
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001414 IRDA_DEBUG(3, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001415#if 0
1416 /* Disable Rx */
1417 register_bank(iobase, 0);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001418 outb(0x00, iobase + IRCC_LCR_B);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001419#endif
1420 register_bank(iobase, 0);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001421 outb(inb(iobase + IRCC_LSAR) & ~IRCC_LSAR_ADDRESS_MASK, iobase + IRCC_LSAR);
1422 lsr= inb(iobase + IRCC_LSR);
1423 msgcnt = inb(iobase + IRCC_LCR_B) & 0x08;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001424
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001425 IRDA_DEBUG(2, "%s: dma count = %d\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001426 get_dma_residue(self->io.dma));
1427
1428 len = self->rx_buff.truesize - get_dma_residue(self->io.dma);
1429
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001430 /* Look for errors */
1431 if (lsr & (IRCC_LSR_FRAME_ERROR | IRCC_LSR_CRC_ERROR | IRCC_LSR_SIZE_ERROR)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001432 self->stats.rx_errors++;
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001433 if (lsr & IRCC_LSR_FRAME_ERROR)
1434 self->stats.rx_frame_errors++;
1435 if (lsr & IRCC_LSR_CRC_ERROR)
1436 self->stats.rx_crc_errors++;
1437 if (lsr & IRCC_LSR_SIZE_ERROR)
1438 self->stats.rx_length_errors++;
1439 if (lsr & (IRCC_LSR_UNDERRUN | IRCC_LSR_OVERRUN))
1440 self->stats.rx_length_errors++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001441 return;
1442 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001443
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001444 /* Remove CRC */
1445 len -= self->io.speed < 4000000 ? 2 : 4;
1446
1447 if (len < 2 || len > 2050) {
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001448 IRDA_WARNING("%s(), bogus len=%d\n", __func__, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001449 return;
1450 }
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001451 IRDA_DEBUG(2, "%s: msgcnt = %d, len=%d\n", __func__, msgcnt, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001452
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001453 skb = dev_alloc_skb(len + 1);
1454 if (!skb) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001455 IRDA_WARNING("%s(), memory squeeze, dropping frame.\n",
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001456 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001457 return;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001458 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001459 /* Make sure IP header gets aligned */
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001460 skb_reserve(skb, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001461
1462 memcpy(skb_put(skb, len), self->rx_buff.data, len);
1463 self->stats.rx_packets++;
1464 self->stats.rx_bytes += len;
1465
1466 skb->dev = self->netdev;
Arnaldo Carvalho de Melo459a98e2007-03-19 15:30:44 -07001467 skb_reset_mac_header(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001468 skb->protocol = htons(ETH_P_IRDA);
1469 netif_rx(skb);
1470}
1471
1472/*
1473 * Function smsc_ircc_sir_receive (self)
1474 *
1475 * Receive one frame from the infrared port
1476 *
1477 */
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001478static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001479{
1480 int boguscount = 0;
1481 int iobase;
1482
1483 IRDA_ASSERT(self != NULL, return;);
1484
1485 iobase = self->io.sir_base;
1486
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001487 /*
1488 * Receive all characters in Rx FIFO, unwrap and unstuff them.
1489 * async_unwrap_char will deliver all found frames
Linus Torvalds1da177e2005-04-16 15:20:36 -07001490 */
1491 do {
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001492 async_unwrap_char(self->netdev, &self->stats, &self->rx_buff,
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001493 inb(iobase + UART_RX));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001494
1495 /* Make sure we don't stay here to long */
1496 if (boguscount++ > 32) {
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001497 IRDA_DEBUG(2, "%s(), breaking!\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001498 break;
1499 }
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001500 } while (inb(iobase + UART_LSR) & UART_LSR_DR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001501}
1502
1503
1504/*
1505 * Function smsc_ircc_interrupt (irq, dev_id, regs)
1506 *
1507 * An interrupt from the chip has arrived. Time to do some work
1508 *
1509 */
Jeff Garzik28fc1f52007-10-29 05:46:16 -04001510static irqreturn_t smsc_ircc_interrupt(int dummy, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001511{
Jeff Garzik28fc1f52007-10-29 05:46:16 -04001512 struct net_device *dev = dev_id;
1513 struct smsc_ircc_cb *self = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001514 int iobase, iir, lcra, lsr;
1515 irqreturn_t ret = IRQ_NONE;
1516
Linus Torvalds1da177e2005-04-16 15:20:36 -07001517 /* Serialise the interrupt handler in various CPUs, stop Tx path */
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001518 spin_lock(&self->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001519
1520 /* Check if we should use the SIR interrupt handler */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001521 if (self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001522 ret = smsc_ircc_interrupt_sir(dev);
1523 goto irq_ret_unlock;
1524 }
1525
1526 iobase = self->io.fir_base;
1527
1528 register_bank(iobase, 0);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001529 iir = inb(iobase + IRCC_IIR);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001530 if (iir == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001531 goto irq_ret_unlock;
1532 ret = IRQ_HANDLED;
1533
1534 /* Disable interrupts */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001535 outb(0, iobase + IRCC_IER);
1536 lcra = inb(iobase + IRCC_LCR_A);
1537 lsr = inb(iobase + IRCC_LSR);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001538
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001539 IRDA_DEBUG(2, "%s(), iir = 0x%02x\n", __func__, iir);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001540
1541 if (iir & IRCC_IIR_EOM) {
1542 if (self->io.direction == IO_RECV)
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001543 smsc_ircc_dma_receive_complete(self);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001544 else
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001545 smsc_ircc_dma_xmit_complete(self);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001546
Dmitry Torokhov80a90582005-09-06 15:19:21 -07001547 smsc_ircc_dma_receive(self);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001548 }
1549
1550 if (iir & IRCC_IIR_ACTIVE_FRAME) {
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001551 /*printk(KERN_WARNING "%s(): Active Frame\n", __func__);*/
Linus Torvalds1da177e2005-04-16 15:20:36 -07001552 }
1553
1554 /* Enable interrupts again */
1555
1556 register_bank(iobase, 0);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001557 outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001558
1559 irq_ret_unlock:
1560 spin_unlock(&self->lock);
Jeff Garzik28fc1f52007-10-29 05:46:16 -04001561
Linus Torvalds1da177e2005-04-16 15:20:36 -07001562 return ret;
1563}
1564
1565/*
David Howells7d12e782006-10-05 14:55:46 +01001566 * Function irport_interrupt_sir (irq, dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001567 *
1568 * Interrupt handler for SIR modes
1569 */
1570static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev)
1571{
Dmitry Torokhovda0841a2005-09-06 15:19:23 -07001572 struct smsc_ircc_cb *self = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001573 int boguscount = 0;
1574 int iobase;
1575 int iir, lsr;
1576
1577 /* Already locked comming here in smsc_ircc_interrupt() */
1578 /*spin_lock(&self->lock);*/
1579
1580 iobase = self->io.sir_base;
1581
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001582 iir = inb(iobase + UART_IIR) & UART_IIR_ID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001583 if (iir == 0)
1584 return IRQ_NONE;
1585 while (iir) {
1586 /* Clear interrupt */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001587 lsr = inb(iobase + UART_LSR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001588
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001589 IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n",
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001590 __func__, iir, lsr, iobase);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001591
1592 switch (iir) {
1593 case UART_IIR_RLSI:
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001594 IRDA_DEBUG(2, "%s(), RLSI\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001595 break;
1596 case UART_IIR_RDI:
1597 /* Receive interrupt */
1598 smsc_ircc_sir_receive(self);
1599 break;
1600 case UART_IIR_THRI:
1601 if (lsr & UART_LSR_THRE)
1602 /* Transmitter ready for data */
1603 smsc_ircc_sir_write_wakeup(self);
1604 break;
1605 default:
1606 IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n",
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001607 __func__, iir);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001608 break;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001609 }
1610
Linus Torvalds1da177e2005-04-16 15:20:36 -07001611 /* Make sure we don't stay here to long */
1612 if (boguscount++ > 100)
1613 break;
1614
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001615 iir = inb(iobase + UART_IIR) & UART_IIR_ID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001616 }
1617 /*spin_unlock(&self->lock);*/
1618 return IRQ_HANDLED;
1619}
1620
1621
1622#if 0 /* unused */
1623/*
1624 * Function ircc_is_receiving (self)
1625 *
1626 * Return TRUE is we are currently receiving a frame
1627 *
1628 */
1629static int ircc_is_receiving(struct smsc_ircc_cb *self)
1630{
1631 int status = FALSE;
1632 /* int iobase; */
1633
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001634 IRDA_DEBUG(1, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001635
1636 IRDA_ASSERT(self != NULL, return FALSE;);
1637
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001638 IRDA_DEBUG(0, "%s: dma count = %d\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001639 get_dma_residue(self->io.dma));
1640
1641 status = (self->rx_buff.state != OUTSIDE_FRAME);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001642
Linus Torvalds1da177e2005-04-16 15:20:36 -07001643 return status;
1644}
1645#endif /* unused */
1646
Dmitry Torokhove812cb52005-10-30 15:00:14 -08001647static int smsc_ircc_request_irq(struct smsc_ircc_cb *self)
1648{
1649 int error;
1650
1651 error = request_irq(self->io.irq, smsc_ircc_interrupt, 0,
1652 self->netdev->name, self->netdev);
1653 if (error)
1654 IRDA_DEBUG(0, "%s(), unable to allocate irq=%d, err=%d\n",
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001655 __func__, self->io.irq, error);
Dmitry Torokhove812cb52005-10-30 15:00:14 -08001656
1657 return error;
1658}
1659
1660static void smsc_ircc_start_interrupts(struct smsc_ircc_cb *self)
1661{
1662 unsigned long flags;
1663
1664 spin_lock_irqsave(&self->lock, flags);
1665
1666 self->io.speed = 0;
1667 smsc_ircc_change_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED);
1668
1669 spin_unlock_irqrestore(&self->lock, flags);
1670}
1671
1672static void smsc_ircc_stop_interrupts(struct smsc_ircc_cb *self)
1673{
1674 int iobase = self->io.fir_base;
1675 unsigned long flags;
1676
1677 spin_lock_irqsave(&self->lock, flags);
1678
1679 register_bank(iobase, 0);
1680 outb(0, iobase + IRCC_IER);
1681 outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER);
1682 outb(0x00, iobase + IRCC_MASTER);
1683
1684 spin_unlock_irqrestore(&self->lock, flags);
1685}
1686
Linus Torvalds1da177e2005-04-16 15:20:36 -07001687
1688/*
1689 * Function smsc_ircc_net_open (dev)
1690 *
1691 * Start the device
1692 *
1693 */
1694static int smsc_ircc_net_open(struct net_device *dev)
1695{
1696 struct smsc_ircc_cb *self;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001697 char hwname[16];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001698
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001699 IRDA_DEBUG(1, "%s\n", __func__);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001700
Linus Torvalds1da177e2005-04-16 15:20:36 -07001701 IRDA_ASSERT(dev != NULL, return -1;);
Dmitry Torokhovda0841a2005-09-06 15:19:23 -07001702 self = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001703 IRDA_ASSERT(self != NULL, return 0;);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001704
Dmitry Torokhove812cb52005-10-30 15:00:14 -08001705 if (self->io.suspended) {
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001706 IRDA_DEBUG(0, "%s(), device is suspended\n", __func__);
Dmitry Torokhove812cb52005-10-30 15:00:14 -08001707 return -EAGAIN;
1708 }
1709
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001710 if (request_irq(self->io.irq, smsc_ircc_interrupt, 0, dev->name,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001711 (void *) dev)) {
1712 IRDA_DEBUG(0, "%s(), unable to allocate irq=%d\n",
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001713 __func__, self->io.irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001714 return -EAGAIN;
1715 }
1716
Dmitry Torokhove812cb52005-10-30 15:00:14 -08001717 smsc_ircc_start_interrupts(self);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001718
Linus Torvalds1da177e2005-04-16 15:20:36 -07001719 /* Give self a hardware name */
1720 /* It would be cool to offer the chip revision here - Jean II */
1721 sprintf(hwname, "SMSC @ 0x%03x", self->io.fir_base);
1722
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001723 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001724 * Open new IrLAP layer instance, now that everything should be
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001725 * initialized properly
Linus Torvalds1da177e2005-04-16 15:20:36 -07001726 */
1727 self->irlap = irlap_open(dev, &self->qos, hwname);
1728
1729 /*
1730 * Always allocate the DMA channel after the IRQ,
1731 * and clean up on failure.
1732 */
1733 if (request_dma(self->io.dma, dev->name)) {
1734 smsc_ircc_net_close(dev);
1735
1736 IRDA_WARNING("%s(), unable to allocate DMA=%d\n",
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001737 __func__, self->io.dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001738 return -EAGAIN;
1739 }
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001740
Linus Torvalds1da177e2005-04-16 15:20:36 -07001741 netif_start_queue(dev);
1742
1743 return 0;
1744}
1745
1746/*
1747 * Function smsc_ircc_net_close (dev)
1748 *
1749 * Stop the device
1750 *
1751 */
1752static int smsc_ircc_net_close(struct net_device *dev)
1753{
1754 struct smsc_ircc_cb *self;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001755
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001756 IRDA_DEBUG(1, "%s\n", __func__);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001757
Linus Torvalds1da177e2005-04-16 15:20:36 -07001758 IRDA_ASSERT(dev != NULL, return -1;);
Dmitry Torokhovda0841a2005-09-06 15:19:23 -07001759 self = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001760 IRDA_ASSERT(self != NULL, return 0;);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001761
Linus Torvalds1da177e2005-04-16 15:20:36 -07001762 /* Stop device */
1763 netif_stop_queue(dev);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001764
Linus Torvalds1da177e2005-04-16 15:20:36 -07001765 /* Stop and remove instance of IrLAP */
1766 if (self->irlap)
1767 irlap_close(self->irlap);
1768 self->irlap = NULL;
1769
Dmitry Torokhove812cb52005-10-30 15:00:14 -08001770 smsc_ircc_stop_interrupts(self);
1771
1772 /* if we are called from smsc_ircc_resume we don't have IRQ reserved */
1773 if (!self->io.suspended)
1774 free_irq(self->io.irq, dev);
1775
Linus Torvalds1da177e2005-04-16 15:20:36 -07001776 disable_dma(self->io.dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001777 free_dma(self->io.dma);
1778
1779 return 0;
1780}
1781
Russell King3ae5eae2005-11-09 22:32:44 +00001782static int smsc_ircc_suspend(struct platform_device *dev, pm_message_t state)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001783{
Russell King3ae5eae2005-11-09 22:32:44 +00001784 struct smsc_ircc_cb *self = platform_get_drvdata(dev);
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -07001785
Russell King9480e302005-10-28 09:52:56 -07001786 if (!self->io.suspended) {
Dmitry Torokhove812cb52005-10-30 15:00:14 -08001787 IRDA_DEBUG(1, "%s, Suspending\n", driver_name);
1788
1789 rtnl_lock();
1790 if (netif_running(self->netdev)) {
1791 netif_device_detach(self->netdev);
1792 smsc_ircc_stop_interrupts(self);
1793 free_irq(self->io.irq, self->netdev);
1794 disable_dma(self->io.dma);
1795 }
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001796 self->io.suspended = 1;
Dmitry Torokhove812cb52005-10-30 15:00:14 -08001797 rtnl_unlock();
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001798 }
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -07001799
1800 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001801}
1802
Russell King3ae5eae2005-11-09 22:32:44 +00001803static int smsc_ircc_resume(struct platform_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001804{
Russell King3ae5eae2005-11-09 22:32:44 +00001805 struct smsc_ircc_cb *self = platform_get_drvdata(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001806
Russell King9480e302005-10-28 09:52:56 -07001807 if (self->io.suspended) {
Dmitry Torokhove812cb52005-10-30 15:00:14 -08001808 IRDA_DEBUG(1, "%s, Waking up\n", driver_name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001809
Dmitry Torokhove812cb52005-10-30 15:00:14 -08001810 rtnl_lock();
1811 smsc_ircc_init_chip(self);
1812 if (netif_running(self->netdev)) {
1813 if (smsc_ircc_request_irq(self)) {
1814 /*
1815 * Don't fail resume process, just kill this
1816 * network interface
1817 */
1818 unregister_netdevice(self->netdev);
1819 } else {
1820 enable_dma(self->io.dma);
1821 smsc_ircc_start_interrupts(self);
1822 netif_device_attach(self->netdev);
1823 }
1824 }
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -07001825 self->io.suspended = 0;
Dmitry Torokhove812cb52005-10-30 15:00:14 -08001826 rtnl_unlock();
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -07001827 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001828 return 0;
1829}
1830
1831/*
1832 * Function smsc_ircc_close (self)
1833 *
1834 * Close driver instance
1835 *
1836 */
1837static int __exit smsc_ircc_close(struct smsc_ircc_cb *self)
1838{
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001839 IRDA_DEBUG(1, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001840
1841 IRDA_ASSERT(self != NULL, return -1;);
1842
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -07001843 platform_device_unregister(self->pldev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001844
1845 /* Remove netdevice */
1846 unregister_netdev(self->netdev);
1847
Dmitry Torokhove812cb52005-10-30 15:00:14 -08001848 smsc_ircc_stop_interrupts(self);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001849
1850 /* Release the PORTS that this driver is using */
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001851 IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001852 self->io.fir_base);
1853
1854 release_region(self->io.fir_base, self->io.fir_ext);
1855
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001856 IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001857 self->io.sir_base);
1858
1859 release_region(self->io.sir_base, self->io.sir_ext);
1860
1861 if (self->tx_buff.head)
1862 dma_free_coherent(NULL, self->tx_buff.truesize,
1863 self->tx_buff.head, self->tx_buff_dma);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001864
Linus Torvalds1da177e2005-04-16 15:20:36 -07001865 if (self->rx_buff.head)
1866 dma_free_coherent(NULL, self->rx_buff.truesize,
1867 self->rx_buff.head, self->rx_buff_dma);
1868
1869 free_netdev(self->netdev);
1870
1871 return 0;
1872}
1873
1874static void __exit smsc_ircc_cleanup(void)
1875{
1876 int i;
1877
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001878 IRDA_DEBUG(1, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001879
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001880 for (i = 0; i < 2; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001881 if (dev_self[i])
1882 smsc_ircc_close(dev_self[i]);
1883 }
Dmitry Torokhov6bb3b2c2005-09-06 15:19:22 -07001884
Bjorn Helgaasd0d4f692007-05-08 00:36:05 -07001885 if (pnp_driver_registered)
1886 pnp_unregister_driver(&smsc_ircc_pnp_driver);
1887
Russell King3ae5eae2005-11-09 22:32:44 +00001888 platform_driver_unregister(&smsc_ircc_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001889}
1890
1891/*
1892 * Start SIR operations
1893 *
1894 * This function *must* be called with spinlock held, because it may
1895 * be called from the irq handler (via smsc_ircc_change_speed()). - Jean II
1896 */
1897void smsc_ircc_sir_start(struct smsc_ircc_cb *self)
1898{
1899 struct net_device *dev;
1900 int fir_base, sir_base;
1901
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001902 IRDA_DEBUG(3, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001903
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001904 IRDA_ASSERT(self != NULL, return;);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001905 dev = self->netdev;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001906 IRDA_ASSERT(dev != NULL, return;);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001907 dev->hard_start_xmit = &smsc_ircc_hard_xmit_sir;
1908
1909 fir_base = self->io.fir_base;
1910 sir_base = self->io.sir_base;
1911
1912 /* Reset everything */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001913 outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001914
1915 #if SMSC_IRCC2_C_SIR_STOP
1916 /*smsc_ircc_sir_stop(self);*/
1917 #endif
1918
1919 register_bank(fir_base, 1);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001920 outb(((inb(fir_base + IRCC_SCE_CFGA) & IRCC_SCE_CFGA_BLOCK_CTRL_BITS_MASK) | IRCC_CFGA_IRDA_SIR_A), fir_base + IRCC_SCE_CFGA);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001921
1922 /* Initialize UART */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001923 outb(UART_LCR_WLEN8, sir_base + UART_LCR); /* Reset DLAB */
1924 outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), sir_base + UART_MCR);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001925
Linus Torvalds1da177e2005-04-16 15:20:36 -07001926 /* Turn on interrups */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001927 outb(UART_IER_RLSI | UART_IER_RDI |UART_IER_THRI, sir_base + UART_IER);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001928
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001929 IRDA_DEBUG(3, "%s() - exit\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001930
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001931 outb(0x00, fir_base + IRCC_MASTER);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001932}
1933
1934#if SMSC_IRCC2_C_SIR_STOP
1935void smsc_ircc_sir_stop(struct smsc_ircc_cb *self)
1936{
1937 int iobase;
1938
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001939 IRDA_DEBUG(3, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001940 iobase = self->io.sir_base;
1941
1942 /* Reset UART */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001943 outb(0, iobase + UART_MCR);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001944
Linus Torvalds1da177e2005-04-16 15:20:36 -07001945 /* Turn off interrupts */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001946 outb(0, iobase + UART_IER);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001947}
1948#endif
1949
1950/*
1951 * Function smsc_sir_write_wakeup (self)
1952 *
1953 * Called by the SIR interrupt handler when there's room for more data.
1954 * If we have more packets to send, we send them here.
1955 *
1956 */
1957static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self)
1958{
1959 int actual = 0;
1960 int iobase;
1961 int fcr;
1962
1963 IRDA_ASSERT(self != NULL, return;);
1964
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001965 IRDA_DEBUG(4, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001966
1967 iobase = self->io.sir_base;
1968
1969 /* Finished with frame? */
1970 if (self->tx_buff.len > 0) {
1971 /* Write data left in transmit buffer */
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001972 actual = smsc_ircc_sir_write(iobase, self->io.fifo_size,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001973 self->tx_buff.data, self->tx_buff.len);
1974 self->tx_buff.data += actual;
1975 self->tx_buff.len -= actual;
1976 } else {
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001977
Linus Torvalds1da177e2005-04-16 15:20:36 -07001978 /*if (self->tx_buff.len ==0) {*/
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07001979
1980 /*
1981 * Now serial buffer is almost free & we can start
Linus Torvalds1da177e2005-04-16 15:20:36 -07001982 * transmission of another packet. But first we must check
1983 * if we need to change the speed of the hardware
1984 */
1985 if (self->new_speed) {
1986 IRDA_DEBUG(5, "%s(), Changing speed to %d.\n",
Harvey Harrisona97a6f12008-07-30 17:20:18 -07001987 __func__, self->new_speed);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001988 smsc_ircc_sir_wait_hw_transmitter_finish(self);
1989 smsc_ircc_change_speed(self, self->new_speed);
1990 self->new_speed = 0;
1991 } else {
1992 /* Tell network layer that we want more frames */
1993 netif_wake_queue(self->netdev);
1994 }
1995 self->stats.tx_packets++;
1996
Dmitry Torokhov98b77772005-09-06 15:19:19 -07001997 if (self->io.speed <= 115200) {
1998 /*
1999 * Reset Rx FIFO to make sure that all reflected transmit data
2000 * is discarded. This is needed for half duplex operation
2001 */
2002 fcr = UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR;
2003 fcr |= self->io.speed < 38400 ?
2004 UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002005
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002006 outb(fcr, iobase + UART_FCR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002007
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002008 /* Turn on receive interrupts */
2009 outb(UART_IER_RDI, iobase + UART_IER);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002010 }
2011 }
2012}
2013
2014/*
2015 * Function smsc_ircc_sir_write (iobase, fifo_size, buf, len)
2016 *
2017 * Fill Tx FIFO with transmit data
2018 *
2019 */
2020static int smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len)
2021{
2022 int actual = 0;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002023
Linus Torvalds1da177e2005-04-16 15:20:36 -07002024 /* Tx FIFO should be empty! */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002025 if (!(inb(iobase + UART_LSR) & UART_LSR_THRE)) {
Harvey Harrisona97a6f12008-07-30 17:20:18 -07002026 IRDA_WARNING("%s(), failed, fifo not empty!\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002027 return 0;
2028 }
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002029
Linus Torvalds1da177e2005-04-16 15:20:36 -07002030 /* Fill FIFO with current frame */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002031 while (fifo_size-- > 0 && actual < len) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002032 /* Transmit next byte */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002033 outb(buf[actual], iobase + UART_TX);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002034 actual++;
2035 }
2036 return actual;
2037}
2038
2039/*
2040 * Function smsc_ircc_is_receiving (self)
2041 *
2042 * Returns true is we are currently receiving data
2043 *
2044 */
2045static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self)
2046{
2047 return (self->rx_buff.state != OUTSIDE_FRAME);
2048}
2049
2050
2051/*
2052 * Function smsc_ircc_probe_transceiver(self)
2053 *
2054 * Tries to find the used Transceiver
2055 *
2056 */
2057static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self)
2058{
2059 unsigned int i;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002060
Linus Torvalds1da177e2005-04-16 15:20:36 -07002061 IRDA_ASSERT(self != NULL, return;);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002062
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002063 for (i = 0; smsc_transceivers[i].name != NULL; i++)
2064 if (smsc_transceivers[i].probe(self->io.fir_base)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002065 IRDA_MESSAGE(" %s transceiver found\n",
2066 smsc_transceivers[i].name);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002067 self->transceiver= i + 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002068 return;
2069 }
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002070
Linus Torvalds1da177e2005-04-16 15:20:36 -07002071 IRDA_MESSAGE("No transceiver found. Defaulting to %s\n",
2072 smsc_transceivers[SMSC_IRCC2_C_DEFAULT_TRANSCEIVER].name);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002073
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002074 self->transceiver = SMSC_IRCC2_C_DEFAULT_TRANSCEIVER;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002075}
2076
2077
2078/*
2079 * Function smsc_ircc_set_transceiver_for_speed(self, speed)
2080 *
2081 * Set the transceiver according to the speed
2082 *
2083 */
2084static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed)
2085{
2086 unsigned int trx;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002087
Linus Torvalds1da177e2005-04-16 15:20:36 -07002088 trx = self->transceiver;
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002089 if (trx > 0)
2090 smsc_transceivers[trx - 1].set_for_speed(self->io.fir_base, speed);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002091}
2092
2093/*
2094 * Function smsc_ircc_wait_hw_transmitter_finish ()
2095 *
2096 * Wait for the real end of HW transmission
2097 *
2098 * The UART is a strict FIFO, and we get called only when we have finished
2099 * pushing data to the FIFO, so the maximum amount of time we must wait
2100 * is only for the FIFO to drain out.
2101 *
2102 * We use a simple calibrated loop. We may need to adjust the loop
2103 * delay (udelay) to balance I/O traffic and latency. And we also need to
2104 * adjust the maximum timeout.
2105 * It would probably be better to wait for the proper interrupt,
2106 * but it doesn't seem to be available.
2107 *
2108 * We can't use jiffies or kernel timers because :
2109 * 1) We are called from the interrupt handler, which disable softirqs,
2110 * so jiffies won't be increased
2111 * 2) Jiffies granularity is usually very coarse (10ms), and we don't
2112 * want to wait that long to detect stuck hardware.
2113 * Jean II
2114 */
2115
2116static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self)
2117{
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002118 int iobase = self->io.sir_base;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002119 int count = SMSC_IRCC2_HW_TRANSMITTER_TIMEOUT_US;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002120
Linus Torvalds1da177e2005-04-16 15:20:36 -07002121 /* Calibrated busy loop */
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002122 while (count-- > 0 && !(inb(iobase + UART_LSR) & UART_LSR_TEMT))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002123 udelay(1);
2124
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002125 if (count == 0)
Harvey Harrisona97a6f12008-07-30 17:20:18 -07002126 IRDA_DEBUG(0, "%s(): stuck transmitter\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002127}
2128
2129
2130/* PROBING
2131 *
David Brownelld94c77b2006-05-09 15:26:11 -07002132 * REVISIT we can be told about the device by PNP, and should use that info
2133 * instead of probing hardware and creating a platform_device ...
Linus Torvalds1da177e2005-04-16 15:20:36 -07002134 */
2135
2136static int __init smsc_ircc_look_for_chips(void)
2137{
Dmitry Torokhovb6158d22005-09-06 15:19:20 -07002138 struct smsc_chip_address *address;
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002139 char *type;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002140 unsigned int cfg_base, found;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002141
Linus Torvalds1da177e2005-04-16 15:20:36 -07002142 found = 0;
2143 address = possible_addresses;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002144
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002145 while (address->cfg_base) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002146 cfg_base = address->cfg_base;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002147
Harvey Harrisona97a6f12008-07-30 17:20:18 -07002148 /*printk(KERN_WARNING "%s(): probing: 0x%02x for: 0x%02x\n", __func__, cfg_base, address->type);*/
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002149
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002150 if (address->type & SMSCSIO_TYPE_FDC) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151 type = "FDC";
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002152 if (address->type & SMSCSIO_TYPE_FLAT)
2153 if (!smsc_superio_flat(fdc_chips_flat, cfg_base, type))
2154 found++;
2155
2156 if (address->type & SMSCSIO_TYPE_PAGED)
2157 if (!smsc_superio_paged(fdc_chips_paged, cfg_base, type))
2158 found++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002159 }
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002160 if (address->type & SMSCSIO_TYPE_LPC) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002161 type = "LPC";
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002162 if (address->type & SMSCSIO_TYPE_FLAT)
2163 if (!smsc_superio_flat(lpc_chips_flat, cfg_base, type))
2164 found++;
2165
2166 if (address->type & SMSCSIO_TYPE_PAGED)
2167 if (!smsc_superio_paged(lpc_chips_paged, cfg_base, type))
2168 found++;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002169 }
2170 address++;
2171 }
2172 return found;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002173}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002174
2175/*
2176 * Function smsc_superio_flat (chip, base, type)
2177 *
2178 * Try to get configuration of a smc SuperIO chip with flat register model
2179 *
2180 */
Dmitry Torokhovb6158d22005-09-06 15:19:20 -07002181static int __init smsc_superio_flat(const struct smsc_chip *chips, unsigned short cfgbase, char *type)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002182{
2183 unsigned short firbase, sirbase;
2184 u8 mode, dma, irq;
2185 int ret = -ENODEV;
2186
Harvey Harrisona97a6f12008-07-30 17:20:18 -07002187 IRDA_DEBUG(1, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002188
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002189 if (smsc_ircc_probe(cfgbase, SMSCSIOFLAT_DEVICEID_REG, chips, type) == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002190 return ret;
2191
2192 outb(SMSCSIOFLAT_UARTMODE0C_REG, cfgbase);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002193 mode = inb(cfgbase + 1);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002194
Harvey Harrisona97a6f12008-07-30 17:20:18 -07002195 /*printk(KERN_WARNING "%s(): mode: 0x%02x\n", __func__, mode);*/
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002196
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002197 if (!(mode & SMSCSIOFLAT_UART2MODE_VAL_IRDA))
Harvey Harrisona97a6f12008-07-30 17:20:18 -07002198 IRDA_WARNING("%s(): IrDA not enabled\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002199
2200 outb(SMSCSIOFLAT_UART2BASEADDR_REG, cfgbase);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002201 sirbase = inb(cfgbase + 1) << 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002202
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002203 /* FIR iobase */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002204 outb(SMSCSIOFLAT_FIRBASEADDR_REG, cfgbase);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002205 firbase = inb(cfgbase + 1) << 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002206
2207 /* DMA */
2208 outb(SMSCSIOFLAT_FIRDMASELECT_REG, cfgbase);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002209 dma = inb(cfgbase + 1) & SMSCSIOFLAT_FIRDMASELECT_MASK;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002210
Linus Torvalds1da177e2005-04-16 15:20:36 -07002211 /* IRQ */
2212 outb(SMSCSIOFLAT_UARTIRQSELECT_REG, cfgbase);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002213 irq = inb(cfgbase + 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002214
Harvey Harrisona97a6f12008-07-30 17:20:18 -07002215 IRDA_MESSAGE("%s(): fir: 0x%02x, sir: 0x%02x, dma: %02d, irq: %d, mode: 0x%02x\n", __func__, firbase, sirbase, dma, irq, mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002216
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002217 if (firbase && smsc_ircc_open(firbase, sirbase, dma, irq) == 0)
2218 ret = 0;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002219
Linus Torvalds1da177e2005-04-16 15:20:36 -07002220 /* Exit configuration */
2221 outb(SMSCSIO_CFGEXITKEY, cfgbase);
2222
2223 return ret;
2224}
2225
2226/*
2227 * Function smsc_superio_paged (chip, base, type)
2228 *
2229 * Try to get configuration of a smc SuperIO chip with paged register model
2230 *
2231 */
Dmitry Torokhovb6158d22005-09-06 15:19:20 -07002232static int __init smsc_superio_paged(const struct smsc_chip *chips, unsigned short cfg_base, char *type)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002233{
2234 unsigned short fir_io, sir_io;
2235 int ret = -ENODEV;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002236
Harvey Harrisona97a6f12008-07-30 17:20:18 -07002237 IRDA_DEBUG(1, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002238
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002239 if (smsc_ircc_probe(cfg_base, 0x20, chips, type) == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002240 return ret;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002241
Linus Torvalds1da177e2005-04-16 15:20:36 -07002242 /* Select logical device (UART2) */
2243 outb(0x07, cfg_base);
2244 outb(0x05, cfg_base + 1);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002245
Linus Torvalds1da177e2005-04-16 15:20:36 -07002246 /* SIR iobase */
2247 outb(0x60, cfg_base);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002248 sir_io = inb(cfg_base + 1) << 8;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002249 outb(0x61, cfg_base);
2250 sir_io |= inb(cfg_base + 1);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002251
Linus Torvalds1da177e2005-04-16 15:20:36 -07002252 /* Read FIR base */
2253 outb(0x62, cfg_base);
2254 fir_io = inb(cfg_base + 1) << 8;
2255 outb(0x63, cfg_base);
2256 fir_io |= inb(cfg_base + 1);
2257 outb(0x2b, cfg_base); /* ??? */
2258
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002259 if (fir_io && smsc_ircc_open(fir_io, sir_io, ircc_dma, ircc_irq) == 0)
2260 ret = 0;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002261
Linus Torvalds1da177e2005-04-16 15:20:36 -07002262 /* Exit configuration */
2263 outb(SMSCSIO_CFGEXITKEY, cfg_base);
2264
2265 return ret;
2266}
2267
2268
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002269static int __init smsc_access(unsigned short cfg_base, unsigned char reg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002270{
Harvey Harrisona97a6f12008-07-30 17:20:18 -07002271 IRDA_DEBUG(1, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002272
2273 outb(reg, cfg_base);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002274 return inb(cfg_base) != reg ? -1 : 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002275}
2276
Dmitry Torokhovb6158d22005-09-06 15:19:20 -07002277static const struct smsc_chip * __init smsc_ircc_probe(unsigned short cfg_base, u8 reg, const struct smsc_chip *chip, char *type)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002278{
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002279 u8 devid, xdevid, rev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002280
Harvey Harrisona97a6f12008-07-30 17:20:18 -07002281 IRDA_DEBUG(1, "%s\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002282
2283 /* Leave configuration */
2284
2285 outb(SMSCSIO_CFGEXITKEY, cfg_base);
2286
2287 if (inb(cfg_base) == SMSCSIO_CFGEXITKEY) /* not a smc superio chip */
2288 return NULL;
2289
2290 outb(reg, cfg_base);
2291
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002292 xdevid = inb(cfg_base + 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002293
2294 /* Enter configuration */
2295
2296 outb(SMSCSIO_CFGACCESSKEY, cfg_base);
2297
2298 #if 0
2299 if (smsc_access(cfg_base,0x55)) /* send second key and check */
2300 return NULL;
2301 #endif
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002302
Linus Torvalds1da177e2005-04-16 15:20:36 -07002303 /* probe device ID */
2304
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002305 if (smsc_access(cfg_base, reg))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002306 return NULL;
2307
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002308 devid = inb(cfg_base + 1);
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002309
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002310 if (devid == 0 || devid == 0xff) /* typical values for unused port */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002311 return NULL;
2312
2313 /* probe revision ID */
2314
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002315 if (smsc_access(cfg_base, reg + 1))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002316 return NULL;
2317
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002318 rev = inb(cfg_base + 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002319
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002320 if (rev >= 128) /* i think this will make no sense */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002321 return NULL;
2322
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002323 if (devid == xdevid) /* protection against false positives */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002324 return NULL;
2325
2326 /* Check for expected device ID; are there others? */
2327
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002328 while (chip->devid != devid) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002329
2330 chip++;
2331
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002332 if (chip->name == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002333 return NULL;
2334 }
2335
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002336 IRDA_MESSAGE("found SMC SuperIO Chip (devid=0x%02x rev=%02X base=0x%04x): %s%s\n",
2337 devid, rev, cfg_base, type, chip->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002338
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002339 if (chip->rev > rev) {
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002340 IRDA_MESSAGE("Revision higher than expected\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002341 return NULL;
2342 }
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002343
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002344 if (chip->flags & NoIRDA)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002345 IRDA_MESSAGE("chipset does not support IRDA\n");
2346
2347 return chip;
2348}
2349
2350static int __init smsc_superio_fdc(unsigned short cfg_base)
2351{
2352 int ret = -1;
2353
2354 if (!request_region(cfg_base, 2, driver_name)) {
2355 IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n",
Harvey Harrisona97a6f12008-07-30 17:20:18 -07002356 __func__, cfg_base);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002357 } else {
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002358 if (!smsc_superio_flat(fdc_chips_flat, cfg_base, "FDC") ||
2359 !smsc_superio_paged(fdc_chips_paged, cfg_base, "FDC"))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002360 ret = 0;
2361
2362 release_region(cfg_base, 2);
2363 }
2364
2365 return ret;
2366}
2367
2368static int __init smsc_superio_lpc(unsigned short cfg_base)
2369{
2370 int ret = -1;
2371
2372 if (!request_region(cfg_base, 2, driver_name)) {
2373 IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n",
Harvey Harrisona97a6f12008-07-30 17:20:18 -07002374 __func__, cfg_base);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002375 } else {
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002376 if (!smsc_superio_flat(lpc_chips_flat, cfg_base, "LPC") ||
2377 !smsc_superio_paged(lpc_chips_paged, cfg_base, "LPC"))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002378 ret = 0;
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002379
Linus Torvalds1da177e2005-04-16 15:20:36 -07002380 release_region(cfg_base, 2);
2381 }
2382 return ret;
2383}
2384
Linus Walleijc1e14a62006-04-05 22:33:59 -07002385/*
2386 * Look for some specific subsystem setups that need
2387 * pre-configuration not properly done by the BIOS (especially laptops)
2388 * This code is based in part on smcinit.c, tosh1800-smcinit.c
2389 * and tosh2450-smcinit.c. The table lists the device entries
Linus Walleij08d09992006-04-14 16:03:33 -07002390 * for ISA bridges with an LPC (Low Pin Count) controller which
2391 * handles the communication with the SMSC device. After the LPC
2392 * controller is initialized through PCI, the SMSC device is initialized
2393 * through a dedicated port in the ISA port-mapped I/O area, this latter
2394 * area is used to configure the SMSC device with default
2395 * SIR and FIR I/O ports, DMA and IRQ. Different vendors have
2396 * used different sets of parameters and different control port
2397 * addresses making a subsystem device table necessary.
Linus Walleijc1e14a62006-04-05 22:33:59 -07002398 */
2399#ifdef CONFIG_PCI
2400#define PCIID_VENDOR_INTEL 0x8086
2401#define PCIID_VENDOR_ALI 0x10b9
Dmitry Torokhovc5d965c2006-07-06 23:58:27 -07002402static struct smsc_ircc_subsystem_configuration subsystem_configurations[] __initdata = {
Linus Walleij (LD/EAB895de092006-09-27 22:49:23 -07002403 /*
2404 * Subsystems needing entries:
2405 * 0x10b9:0x1533 0x103c:0x0850 HP nx9010 family
2406 * 0x10b9:0x1533 0x0e11:0x005a Compaq nc4000 family
2407 * 0x8086:0x24cc 0x0e11:0x002a HP nx9000 family
2408 */
2409 {
2410 /* Guessed entry */
2411 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */
2412 .device = 0x24cc,
2413 .subvendor = 0x103c,
2414 .subdevice = 0x08bc,
2415 .sir_io = 0x02f8,
2416 .fir_io = 0x0130,
2417 .fir_irq = 0x05,
2418 .fir_dma = 0x03,
2419 .cfg_base = 0x004e,
2420 .preconfigure = preconfigure_through_82801,
2421 .name = "HP nx5000 family",
2422 },
Linus Walleijc1e14a62006-04-05 22:33:59 -07002423 {
2424 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */
2425 .device = 0x24cc,
2426 .subvendor = 0x103c,
2427 .subdevice = 0x088c,
Linus Walleij08d09992006-04-14 16:03:33 -07002428 /* Quite certain these are the same for nc8000 as for nc6000 */
2429 .sir_io = 0x02f8,
Linus Walleijc1e14a62006-04-05 22:33:59 -07002430 .fir_io = 0x0130,
Linus Walleij08d09992006-04-14 16:03:33 -07002431 .fir_irq = 0x05,
Linus Walleijc1e14a62006-04-05 22:33:59 -07002432 .fir_dma = 0x03,
2433 .cfg_base = 0x004e,
2434 .preconfigure = preconfigure_through_82801,
Linus Walleij (LD/EAB895de092006-09-27 22:49:23 -07002435 .name = "HP nc8000 family",
Linus Walleijc1e14a62006-04-05 22:33:59 -07002436 },
2437 {
2438 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */
2439 .device = 0x24cc,
2440 .subvendor = 0x103c,
2441 .subdevice = 0x0890,
2442 .sir_io = 0x02f8,
2443 .fir_io = 0x0130,
Linus Walleij08d09992006-04-14 16:03:33 -07002444 .fir_irq = 0x05,
Linus Walleijc1e14a62006-04-05 22:33:59 -07002445 .fir_dma = 0x03,
2446 .cfg_base = 0x004e,
2447 .preconfigure = preconfigure_through_82801,
Linus Walleij (LD/EAB895de092006-09-27 22:49:23 -07002448 .name = "HP nc6000 family",
2449 },
2450 {
2451 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */
2452 .device = 0x24cc,
2453 .subvendor = 0x0e11,
2454 .subdevice = 0x0860,
2455 /* I assume these are the same for x1000 as for the others */
2456 .sir_io = 0x02e8,
2457 .fir_io = 0x02f8,
2458 .fir_irq = 0x07,
2459 .fir_dma = 0x03,
2460 .cfg_base = 0x002e,
2461 .preconfigure = preconfigure_through_82801,
2462 .name = "Compaq x1000 family",
Linus Walleijc1e14a62006-04-05 22:33:59 -07002463 },
2464 {
Linus Walleij08d09992006-04-14 16:03:33 -07002465 /* Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge */
2466 .vendor = PCIID_VENDOR_INTEL,
Linus Walleijc1e14a62006-04-05 22:33:59 -07002467 .device = 0x24c0,
2468 .subvendor = 0x1179,
Linus Walleij08d09992006-04-14 16:03:33 -07002469 .subdevice = 0xffff, /* 0xffff is "any" */
Linus Walleijc1e14a62006-04-05 22:33:59 -07002470 .sir_io = 0x03f8,
2471 .fir_io = 0x0130,
2472 .fir_irq = 0x07,
2473 .fir_dma = 0x01,
2474 .cfg_base = 0x002e,
2475 .preconfigure = preconfigure_through_82801,
Linus Walleij08d09992006-04-14 16:03:33 -07002476 .name = "Toshiba laptop with Intel 82801DB/DBL LPC bridge",
Linus Walleijc1e14a62006-04-05 22:33:59 -07002477 },
2478 {
2479 .vendor = PCIID_VENDOR_INTEL, /* Intel 82801CAM ISA bridge */
Linus Walleij08d09992006-04-14 16:03:33 -07002480 .device = 0x248c,
Linus Walleijc1e14a62006-04-05 22:33:59 -07002481 .subvendor = 0x1179,
Linus Walleij08d09992006-04-14 16:03:33 -07002482 .subdevice = 0xffff, /* 0xffff is "any" */
Linus Walleijc1e14a62006-04-05 22:33:59 -07002483 .sir_io = 0x03f8,
2484 .fir_io = 0x0130,
2485 .fir_irq = 0x03,
2486 .fir_dma = 0x03,
2487 .cfg_base = 0x002e,
2488 .preconfigure = preconfigure_through_82801,
Linus Walleij08d09992006-04-14 16:03:33 -07002489 .name = "Toshiba laptop with Intel 82801CAM ISA bridge",
Linus Walleijc1e14a62006-04-05 22:33:59 -07002490 },
2491 {
Linus Walleij08d09992006-04-14 16:03:33 -07002492 /* 82801DBM (ICH4-M) LPC Interface Bridge */
2493 .vendor = PCIID_VENDOR_INTEL,
2494 .device = 0x24cc,
2495 .subvendor = 0x1179,
2496 .subdevice = 0xffff, /* 0xffff is "any" */
2497 .sir_io = 0x03f8,
2498 .fir_io = 0x0130,
2499 .fir_irq = 0x03,
2500 .fir_dma = 0x03,
2501 .cfg_base = 0x002e,
2502 .preconfigure = preconfigure_through_82801,
2503 .name = "Toshiba laptop with Intel 8281DBM LPC bridge",
2504 },
2505 {
2506 /* ALi M1533/M1535 PCI to ISA Bridge [Aladdin IV/V/V+] */
2507 .vendor = PCIID_VENDOR_ALI,
Linus Walleijc1e14a62006-04-05 22:33:59 -07002508 .device = 0x1533,
2509 .subvendor = 0x1179,
Linus Walleij08d09992006-04-14 16:03:33 -07002510 .subdevice = 0xffff, /* 0xffff is "any" */
Linus Walleijc1e14a62006-04-05 22:33:59 -07002511 .sir_io = 0x02e8,
2512 .fir_io = 0x02f8,
2513 .fir_irq = 0x07,
2514 .fir_dma = 0x03,
2515 .cfg_base = 0x002e,
2516 .preconfigure = preconfigure_through_ali,
Linus Walleij08d09992006-04-14 16:03:33 -07002517 .name = "Toshiba laptop with ALi ISA bridge",
Linus Walleijc1e14a62006-04-05 22:33:59 -07002518 },
2519 { } // Terminator
2520};
2521
2522
2523/*
Linus Walleij08d09992006-04-14 16:03:33 -07002524 * This sets up the basic SMSC parameters
2525 * (FIR port, SIR port, FIR DMA, FIR IRQ)
Linus Walleijc1e14a62006-04-05 22:33:59 -07002526 * through the chip configuration port.
2527 */
Linus Walleij08d09992006-04-14 16:03:33 -07002528static int __init preconfigure_smsc_chip(struct
2529 smsc_ircc_subsystem_configuration
2530 *conf)
Linus Walleijc1e14a62006-04-05 22:33:59 -07002531{
2532 unsigned short iobase = conf->cfg_base;
2533 unsigned char tmpbyte;
2534
2535 outb(LPC47N227_CFGACCESSKEY, iobase); // enter configuration state
2536 outb(SMSCSIOFLAT_DEVICEID_REG, iobase); // set for device ID
2537 tmpbyte = inb(iobase +1); // Read device ID
Linus Walleij08d09992006-04-14 16:03:33 -07002538 IRDA_DEBUG(0,
2539 "Detected Chip id: 0x%02x, setting up registers...\n",
2540 tmpbyte);
Linus Walleijc1e14a62006-04-05 22:33:59 -07002541
2542 /* Disable UART1 and set up SIR I/O port */
2543 outb(0x24, iobase); // select CR24 - UART1 base addr
2544 outb(0x00, iobase + 1); // disable UART1
2545 outb(SMSCSIOFLAT_UART2BASEADDR_REG, iobase); // select CR25 - UART2 base addr
2546 outb( (conf->sir_io >> 2), iobase + 1); // bits 2-9 of 0x3f8
2547 tmpbyte = inb(iobase + 1);
2548 if (tmpbyte != (conf->sir_io >> 2) ) {
2549 IRDA_WARNING("ERROR: could not configure SIR ioport.\n");
Linus Walleij08d09992006-04-14 16:03:33 -07002550 IRDA_WARNING("Try to supply ircc_cfg argument.\n");
Linus Walleijc1e14a62006-04-05 22:33:59 -07002551 return -ENXIO;
2552 }
2553
2554 /* Set up FIR IRQ channel for UART2 */
2555 outb(SMSCSIOFLAT_UARTIRQSELECT_REG, iobase); // select CR28 - UART1,2 IRQ select
2556 tmpbyte = inb(iobase + 1);
2557 tmpbyte &= SMSCSIOFLAT_UART1IRQSELECT_MASK; // Do not touch the UART1 portion
2558 tmpbyte |= (conf->fir_irq & SMSCSIOFLAT_UART2IRQSELECT_MASK);
2559 outb(tmpbyte, iobase + 1);
2560 tmpbyte = inb(iobase + 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK;
2561 if (tmpbyte != conf->fir_irq) {
2562 IRDA_WARNING("ERROR: could not configure FIR IRQ channel.\n");
2563 return -ENXIO;
2564 }
2565
2566 /* Set up FIR I/O port */
2567 outb(SMSCSIOFLAT_FIRBASEADDR_REG, iobase); // CR2B - SCE (FIR) base addr
2568 outb((conf->fir_io >> 3), iobase + 1);
2569 tmpbyte = inb(iobase + 1);
2570 if (tmpbyte != (conf->fir_io >> 3) ) {
2571 IRDA_WARNING("ERROR: could not configure FIR I/O port.\n");
2572 return -ENXIO;
2573 }
2574
2575 /* Set up FIR DMA channel */
2576 outb(SMSCSIOFLAT_FIRDMASELECT_REG, iobase); // CR2C - SCE (FIR) DMA select
2577 outb((conf->fir_dma & LPC47N227_FIRDMASELECT_MASK), iobase + 1); // DMA
2578 tmpbyte = inb(iobase + 1) & LPC47N227_FIRDMASELECT_MASK;
2579 if (tmpbyte != (conf->fir_dma & LPC47N227_FIRDMASELECT_MASK)) {
2580 IRDA_WARNING("ERROR: could not configure FIR DMA channel.\n");
2581 return -ENXIO;
2582 }
2583
2584 outb(SMSCSIOFLAT_UARTMODE0C_REG, iobase); // CR0C - UART mode
2585 tmpbyte = inb(iobase + 1);
Linus Walleij08d09992006-04-14 16:03:33 -07002586 tmpbyte &= ~SMSCSIOFLAT_UART2MODE_MASK |
2587 SMSCSIOFLAT_UART2MODE_VAL_IRDA;
Linus Walleijc1e14a62006-04-05 22:33:59 -07002588 outb(tmpbyte, iobase + 1); // enable IrDA (HPSIR) mode, high speed
2589
2590 outb(LPC47N227_APMBOOTDRIVE_REG, iobase); // CR07 - Auto Pwr Mgt/boot drive sel
2591 tmpbyte = inb(iobase + 1);
2592 outb(tmpbyte | LPC47N227_UART2AUTOPWRDOWN_MASK, iobase + 1); // enable UART2 autopower down
2593
2594 /* This one was not part of tosh1800 */
2595 outb(0x0a, iobase); // CR0a - ecp fifo / ir mux
2596 tmpbyte = inb(iobase + 1);
2597 outb(tmpbyte | 0x40, iobase + 1); // send active device to ir port
2598
2599 outb(LPC47N227_UART12POWER_REG, iobase); // CR02 - UART 1,2 power
2600 tmpbyte = inb(iobase + 1);
2601 outb(tmpbyte | LPC47N227_UART2POWERDOWN_MASK, iobase + 1); // UART2 power up mode, UART1 power down
2602
2603 outb(LPC47N227_FDCPOWERVALIDCONF_REG, iobase); // CR00 - FDC Power/valid config cycle
2604 tmpbyte = inb(iobase + 1);
2605 outb(tmpbyte | LPC47N227_VALID_MASK, iobase + 1); // valid config cycle done
2606
2607 outb(LPC47N227_CFGEXITKEY, iobase); // Exit configuration
2608
2609 return 0;
2610}
2611
Linus Walleij08d09992006-04-14 16:03:33 -07002612/* 82801CAM generic registers */
Linus Walleijc1e14a62006-04-05 22:33:59 -07002613#define VID 0x00
2614#define DID 0x02
Linus Walleij08d09992006-04-14 16:03:33 -07002615#define PIRQ_A_D_ROUT 0x60
2616#define SIRQ_CNTL 0x64
2617#define PIRQ_E_H_ROUT 0x68
Linus Walleijc1e14a62006-04-05 22:33:59 -07002618#define PCI_DMA_C 0x90
Linus Walleij08d09992006-04-14 16:03:33 -07002619/* LPC-specific registers */
Linus Walleijc1e14a62006-04-05 22:33:59 -07002620#define COM_DEC 0xe0
Linus Walleij08d09992006-04-14 16:03:33 -07002621#define GEN1_DEC 0xe4
Linus Walleijc1e14a62006-04-05 22:33:59 -07002622#define LPC_EN 0xe6
2623#define GEN2_DEC 0xec
2624/*
Linus Walleij08d09992006-04-14 16:03:33 -07002625 * Sets up the I/O range using the 82801CAM ISA bridge, 82801DBM LPC bridge
2626 * or Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge.
2627 * They all work the same way!
Linus Walleijc1e14a62006-04-05 22:33:59 -07002628 */
2629static int __init preconfigure_through_82801(struct pci_dev *dev,
Linus Walleij08d09992006-04-14 16:03:33 -07002630 struct
2631 smsc_ircc_subsystem_configuration
2632 *conf)
Linus Walleijc1e14a62006-04-05 22:33:59 -07002633{
2634 unsigned short tmpword;
Linus Walleij08d09992006-04-14 16:03:33 -07002635 unsigned char tmpbyte;
Linus Walleijc1e14a62006-04-05 22:33:59 -07002636
Linus Walleij08d09992006-04-14 16:03:33 -07002637 IRDA_MESSAGE("Setting up Intel 82801 controller and SMSC device\n");
2638 /*
2639 * Select the range for the COMA COM port (SIR)
2640 * Register COM_DEC:
2641 * Bit 7: reserved
2642 * Bit 6-4, COMB decode range
2643 * Bit 3: reserved
2644 * Bit 2-0, COMA decode range
2645 *
2646 * Decode ranges:
2647 * 000 = 0x3f8-0x3ff (COM1)
2648 * 001 = 0x2f8-0x2ff (COM2)
2649 * 010 = 0x220-0x227
2650 * 011 = 0x228-0x22f
2651 * 100 = 0x238-0x23f
2652 * 101 = 0x2e8-0x2ef (COM4)
2653 * 110 = 0x338-0x33f
2654 * 111 = 0x3e8-0x3ef (COM3)
2655 */
2656 pci_read_config_byte(dev, COM_DEC, &tmpbyte);
2657 tmpbyte &= 0xf8; /* mask COMA bits */
2658 switch(conf->sir_io) {
2659 case 0x3f8:
2660 tmpbyte |= 0x00;
2661 break;
2662 case 0x2f8:
2663 tmpbyte |= 0x01;
2664 break;
2665 case 0x220:
2666 tmpbyte |= 0x02;
2667 break;
2668 case 0x228:
2669 tmpbyte |= 0x03;
2670 break;
2671 case 0x238:
2672 tmpbyte |= 0x04;
2673 break;
2674 case 0x2e8:
2675 tmpbyte |= 0x05;
2676 break;
2677 case 0x338:
2678 tmpbyte |= 0x06;
2679 break;
2680 case 0x3e8:
2681 tmpbyte |= 0x07;
2682 break;
2683 default:
2684 tmpbyte |= 0x01; /* COM2 default */
2685 }
2686 IRDA_DEBUG(1, "COM_DEC (write): 0x%02x\n", tmpbyte);
2687 pci_write_config_byte(dev, COM_DEC, tmpbyte);
Linus Walleijc1e14a62006-04-05 22:33:59 -07002688
Linus Walleij08d09992006-04-14 16:03:33 -07002689 /* Enable Low Pin Count interface */
2690 pci_read_config_word(dev, LPC_EN, &tmpword);
2691 /* These seem to be set up at all times,
2692 * just make sure it is properly set.
2693 */
2694 switch(conf->cfg_base) {
2695 case 0x04e:
2696 tmpword |= 0x2000;
2697 break;
2698 case 0x02e:
2699 tmpword |= 0x1000;
2700 break;
2701 case 0x062:
2702 tmpword |= 0x0800;
2703 break;
2704 case 0x060:
2705 tmpword |= 0x0400;
2706 break;
2707 default:
2708 IRDA_WARNING("Uncommon I/O base address: 0x%04x\n",
2709 conf->cfg_base);
2710 break;
2711 }
2712 tmpword &= 0xfffd; /* disable LPC COMB */
2713 tmpword |= 0x0001; /* set bit 0 : enable LPC COMA addr range (GEN2) */
2714 IRDA_DEBUG(1, "LPC_EN (write): 0x%04x\n", tmpword);
Linus Walleijc1e14a62006-04-05 22:33:59 -07002715 pci_write_config_word(dev, LPC_EN, tmpword);
2716
Linus Walleij08d09992006-04-14 16:03:33 -07002717 /*
2718 * Configure LPC DMA channel
2719 * PCI_DMA_C bits:
2720 * Bit 15-14: DMA channel 7 select
2721 * Bit 13-12: DMA channel 6 select
2722 * Bit 11-10: DMA channel 5 select
2723 * Bit 9-8: Reserved
2724 * Bit 7-6: DMA channel 3 select
2725 * Bit 5-4: DMA channel 2 select
2726 * Bit 3-2: DMA channel 1 select
2727 * Bit 1-0: DMA channel 0 select
2728 * 00 = Reserved value
2729 * 01 = PC/PCI DMA
2730 * 10 = Reserved value
2731 * 11 = LPC I/F DMA
2732 */
2733 pci_read_config_word(dev, PCI_DMA_C, &tmpword);
2734 switch(conf->fir_dma) {
2735 case 0x07:
2736 tmpword |= 0xc000;
2737 break;
2738 case 0x06:
2739 tmpword |= 0x3000;
2740 break;
2741 case 0x05:
2742 tmpword |= 0x0c00;
2743 break;
2744 case 0x03:
2745 tmpword |= 0x00c0;
2746 break;
2747 case 0x02:
2748 tmpword |= 0x0030;
2749 break;
2750 case 0x01:
2751 tmpword |= 0x000c;
2752 break;
2753 case 0x00:
2754 tmpword |= 0x0003;
2755 break;
2756 default:
2757 break; /* do not change settings */
2758 }
2759 IRDA_DEBUG(1, "PCI_DMA_C (write): 0x%04x\n", tmpword);
2760 pci_write_config_word(dev, PCI_DMA_C, tmpword);
2761
2762 /*
2763 * GEN2_DEC bits:
2764 * Bit 15-4: Generic I/O range
2765 * Bit 3-1: reserved (read as 0)
2766 * Bit 0: enable GEN2 range on LPC I/F
2767 */
2768 tmpword = conf->fir_io & 0xfff8;
2769 tmpword |= 0x0001;
2770 IRDA_DEBUG(1, "GEN2_DEC (write): 0x%04x\n", tmpword);
2771 pci_write_config_word(dev, GEN2_DEC, tmpword);
Linus Walleijc1e14a62006-04-05 22:33:59 -07002772
2773 /* Pre-configure chip */
Linus Walleij08d09992006-04-14 16:03:33 -07002774 return preconfigure_smsc_chip(conf);
2775}
Linus Walleijc1e14a62006-04-05 22:33:59 -07002776
Linus Walleij08d09992006-04-14 16:03:33 -07002777/*
2778 * Pre-configure a certain port on the ALi 1533 bridge.
2779 * This is based on reverse-engineering since ALi does not
2780 * provide any data sheet for the 1533 chip.
2781 */
2782static void __init preconfigure_ali_port(struct pci_dev *dev,
2783 unsigned short port)
2784{
2785 unsigned char reg;
2786 /* These bits obviously control the different ports */
2787 unsigned char mask;
2788 unsigned char tmpbyte;
2789
2790 switch(port) {
2791 case 0x0130:
2792 case 0x0178:
2793 reg = 0xb0;
2794 mask = 0x80;
2795 break;
2796 case 0x03f8:
2797 reg = 0xb4;
2798 mask = 0x80;
2799 break;
2800 case 0x02f8:
2801 reg = 0xb4;
2802 mask = 0x30;
2803 break;
2804 case 0x02e8:
2805 reg = 0xb4;
2806 mask = 0x08;
2807 break;
2808 default:
2809 IRDA_ERROR("Failed to configure unsupported port on ALi 1533 bridge: 0x%04x\n", port);
2810 return;
2811 }
2812
2813 pci_read_config_byte(dev, reg, &tmpbyte);
2814 /* Turn on the right bits */
2815 tmpbyte |= mask;
2816 pci_write_config_byte(dev, reg, tmpbyte);
2817 IRDA_MESSAGE("Activated ALi 1533 ISA bridge port 0x%04x.\n", port);
2818 return;
Linus Walleijc1e14a62006-04-05 22:33:59 -07002819}
2820
2821static int __init preconfigure_through_ali(struct pci_dev *dev,
Linus Walleij08d09992006-04-14 16:03:33 -07002822 struct
2823 smsc_ircc_subsystem_configuration
2824 *conf)
Linus Walleijc1e14a62006-04-05 22:33:59 -07002825{
Linus Walleij08d09992006-04-14 16:03:33 -07002826 /* Configure the two ports on the ALi 1533 */
2827 preconfigure_ali_port(dev, conf->sir_io);
2828 preconfigure_ali_port(dev, conf->fir_io);
2829
2830 /* Pre-configure chip */
2831 return preconfigure_smsc_chip(conf);
Linus Walleijc1e14a62006-04-05 22:33:59 -07002832}
2833
2834static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg,
2835 unsigned short ircc_fir,
2836 unsigned short ircc_sir,
2837 unsigned char ircc_dma,
2838 unsigned char ircc_irq)
2839{
2840 struct pci_dev *dev = NULL;
2841 unsigned short ss_vendor = 0x0000;
2842 unsigned short ss_device = 0x0000;
2843 int ret = 0;
2844
2845 dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
2846
2847 while (dev != NULL) {
2848 struct smsc_ircc_subsystem_configuration *conf;
2849
2850 /*
Linus Walleij08d09992006-04-14 16:03:33 -07002851 * Cache the subsystem vendor/device:
2852 * some manufacturers fail to set this for all components,
2853 * so we save it in case there is just 0x0000 0x0000 on the
2854 * device we want to check.
Linus Walleijc1e14a62006-04-05 22:33:59 -07002855 */
2856 if (dev->subsystem_vendor != 0x0000U) {
2857 ss_vendor = dev->subsystem_vendor;
2858 ss_device = dev->subsystem_device;
2859 }
2860 conf = subsystem_configurations;
2861 for( ; conf->subvendor; conf++) {
2862 if(conf->vendor == dev->vendor &&
2863 conf->device == dev->device &&
Linus Walleij08d09992006-04-14 16:03:33 -07002864 conf->subvendor == ss_vendor &&
2865 /* Sometimes these are cached values */
2866 (conf->subdevice == ss_device ||
2867 conf->subdevice == 0xffff)) {
2868 struct smsc_ircc_subsystem_configuration
2869 tmpconf;
Linus Walleijc1e14a62006-04-05 22:33:59 -07002870
Linus Walleij08d09992006-04-14 16:03:33 -07002871 memcpy(&tmpconf, conf,
2872 sizeof(struct smsc_ircc_subsystem_configuration));
Linus Walleijc1e14a62006-04-05 22:33:59 -07002873
Linus Walleij08d09992006-04-14 16:03:33 -07002874 /*
2875 * Override the default values with anything
2876 * passed in as parameter
2877 */
Linus Walleijc1e14a62006-04-05 22:33:59 -07002878 if (ircc_cfg != 0)
2879 tmpconf.cfg_base = ircc_cfg;
2880 if (ircc_fir != 0)
2881 tmpconf.fir_io = ircc_fir;
2882 if (ircc_sir != 0)
2883 tmpconf.sir_io = ircc_sir;
Bjorn Helgaas916f11c2007-05-08 00:36:02 -07002884 if (ircc_dma != DMA_INVAL)
Linus Walleijc1e14a62006-04-05 22:33:59 -07002885 tmpconf.fir_dma = ircc_dma;
Bjorn Helgaas916f11c2007-05-08 00:36:02 -07002886 if (ircc_irq != IRQ_INVAL)
Linus Walleijc1e14a62006-04-05 22:33:59 -07002887 tmpconf.fir_irq = ircc_irq;
2888
2889 IRDA_MESSAGE("Detected unconfigured %s SMSC IrDA chip, pre-configuring device.\n", conf->name);
2890 if (conf->preconfigure)
2891 ret = conf->preconfigure(dev, &tmpconf);
2892 else
2893 ret = -ENODEV;
2894 }
2895 }
2896 dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev);
2897 }
2898
2899 return ret;
2900}
2901#endif // CONFIG_PCI
2902
Linus Torvalds1da177e2005-04-16 15:20:36 -07002903/************************************************
2904 *
2905 * Transceivers specific functions
2906 *
2907 ************************************************/
2908
2909
2910/*
2911 * Function smsc_ircc_set_transceiver_smsc_ircc_atc(fir_base, speed)
2912 *
2913 * Program transceiver through smsc-ircc ATC circuitry
2914 *
2915 */
2916
2917static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed)
2918{
2919 unsigned long jiffies_now, jiffies_timeout;
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002920 u8 val;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002921
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002922 jiffies_now = jiffies;
2923 jiffies_timeout = jiffies + SMSC_IRCC2_ATC_PROGRAMMING_TIMEOUT_JIFFIES;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002924
Linus Torvalds1da177e2005-04-16 15:20:36 -07002925 /* ATC */
2926 register_bank(fir_base, 4);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002927 outb((inb(fir_base + IRCC_ATC) & IRCC_ATC_MASK) | IRCC_ATC_nPROGREADY|IRCC_ATC_ENABLE,
2928 fir_base + IRCC_ATC);
2929
2930 while ((val = (inb(fir_base + IRCC_ATC) & IRCC_ATC_nPROGREADY)) &&
2931 !time_after(jiffies, jiffies_timeout))
2932 /* empty */;
2933
2934 if (val)
Harvey Harrisona97a6f12008-07-30 17:20:18 -07002935 IRDA_WARNING("%s(): ATC: 0x%02x\n", __func__,
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002936 inb(fir_base + IRCC_ATC));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002937}
2938
2939/*
2940 * Function smsc_ircc_probe_transceiver_smsc_ircc_atc(fir_base)
2941 *
2942 * Probe transceiver smsc-ircc ATC circuitry
2943 *
2944 */
2945
2946static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base)
2947{
2948 return 0;
2949}
2950
2951/*
2952 * Function smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(self, speed)
2953 *
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002954 * Set transceiver
Linus Torvalds1da177e2005-04-16 15:20:36 -07002955 *
2956 */
2957
2958static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed)
2959{
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002960 u8 fast_mode;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002961
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002962 switch (speed) {
2963 default:
2964 case 576000 :
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002965 fast_mode = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002966 break;
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002967 case 1152000 :
2968 case 4000000 :
Linus Torvalds1da177e2005-04-16 15:20:36 -07002969 fast_mode = IRCC_LCR_A_FAST;
2970 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002971 }
2972 register_bank(fir_base, 0);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002973 outb((inb(fir_base + IRCC_LCR_A) & 0xbf) | fast_mode, fir_base + IRCC_LCR_A);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002974}
2975
2976/*
2977 * Function smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(fir_base)
2978 *
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002979 * Probe transceiver
Linus Torvalds1da177e2005-04-16 15:20:36 -07002980 *
2981 */
2982
2983static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base)
2984{
2985 return 0;
2986}
2987
2988/*
2989 * Function smsc_ircc_set_transceiver_toshiba_sat1800(fir_base, speed)
2990 *
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002991 * Set transceiver
Linus Torvalds1da177e2005-04-16 15:20:36 -07002992 *
2993 */
2994
2995static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed)
2996{
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002997 u8 fast_mode;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07002998
Dmitry Torokhov98b77772005-09-06 15:19:19 -07002999 switch (speed) {
3000 default:
3001 case 576000 :
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07003002 fast_mode = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003003 break;
Dmitry Torokhov98b77772005-09-06 15:19:19 -07003004 case 1152000 :
3005 case 4000000 :
Linus Torvalds1da177e2005-04-16 15:20:36 -07003006 fast_mode = /*IRCC_LCR_A_FAST |*/ IRCC_LCR_A_GP_DATA;
3007 break;
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07003008
Linus Torvalds1da177e2005-04-16 15:20:36 -07003009 }
3010 /* This causes an interrupt */
3011 register_bank(fir_base, 0);
Dmitry Torokhov98b77772005-09-06 15:19:19 -07003012 outb((inb(fir_base + IRCC_LCR_A) & 0xbf) | fast_mode, fir_base + IRCC_LCR_A);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003013}
3014
3015/*
3016 * Function smsc_ircc_probe_transceiver_toshiba_sat1800(fir_base)
3017 *
Dmitry Torokhov527b6af2005-09-06 15:19:17 -07003018 * Probe transceiver
Linus Torvalds1da177e2005-04-16 15:20:36 -07003019 *
3020 */
3021
3022static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base)
3023{
3024 return 0;
3025}
3026
3027
3028module_init(smsc_ircc_init);
3029module_exit(smsc_ircc_cleanup);