Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /********************************************************************* |
| 2 | * |
| 3 | * Filename: nsc-ircc.c |
| 4 | * Version: 1.0 |
| 5 | * Description: Driver for the NSC PC'108 and PC'338 IrDA chipsets |
| 6 | * Status: Stable. |
| 7 | * Author: Dag Brattli <dagb@cs.uit.no> |
| 8 | * Created at: Sat Nov 7 21:43:15 1998 |
| 9 | * Modified at: Wed Mar 1 11:29:34 2000 |
| 10 | * Modified by: Dag Brattli <dagb@cs.uit.no> |
| 11 | * |
| 12 | * Copyright (c) 1998-2000 Dag Brattli <dagb@cs.uit.no> |
| 13 | * Copyright (c) 1998 Lichen Wang, <lwang@actisys.com> |
| 14 | * Copyright (c) 1998 Actisys Corp., www.actisys.com |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 15 | * Copyright (c) 2000-2004 Jean Tourrilhes <jt@hpl.hp.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | * All Rights Reserved |
| 17 | * |
| 18 | * This program is free software; you can redistribute it and/or |
| 19 | * modify it under the terms of the GNU General Public License as |
| 20 | * published by the Free Software Foundation; either version 2 of |
| 21 | * the License, or (at your option) any later version. |
| 22 | * |
Jan Engelhardt | 96de0e2 | 2007-10-19 23:21:04 +0200 | [diff] [blame] | 23 | * Neither Dag Brattli nor University of Tromsø admit liability nor |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | * provide warranty for any of this software. This material is |
| 25 | * provided "AS-IS" and at no charge. |
| 26 | * |
| 27 | * Notice that all functions that needs to access the chip in _any_ |
| 28 | * way, must save BSR register on entry, and restore it on exit. |
| 29 | * It is _very_ important to follow this policy! |
| 30 | * |
| 31 | * __u8 bank; |
| 32 | * |
| 33 | * bank = inb(iobase+BSR); |
| 34 | * |
| 35 | * do_your_stuff_here(); |
| 36 | * |
| 37 | * outb(bank, iobase+BSR); |
| 38 | * |
| 39 | * If you find bugs in this file, its very likely that the same bug |
| 40 | * will also be in w83977af_ir.c since the implementations are quite |
| 41 | * similar. |
| 42 | * |
| 43 | ********************************************************************/ |
| 44 | |
| 45 | #include <linux/module.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 46 | #include <linux/gfp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
| 48 | #include <linux/kernel.h> |
| 49 | #include <linux/types.h> |
| 50 | #include <linux/skbuff.h> |
| 51 | #include <linux/netdevice.h> |
| 52 | #include <linux/ioport.h> |
| 53 | #include <linux/delay.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | #include <linux/init.h> |
Alexey Dobriyan | a6b7a40 | 2011-06-06 10:43:46 +0000 | [diff] [blame] | 55 | #include <linux/interrupt.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | #include <linux/rtnetlink.h> |
| 57 | #include <linux/dma-mapping.h> |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 58 | #include <linux/pnp.h> |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 59 | #include <linux/platform_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
| 61 | #include <asm/io.h> |
| 62 | #include <asm/dma.h> |
| 63 | #include <asm/byteorder.h> |
| 64 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | #include <net/irda/wrapper.h> |
| 66 | #include <net/irda/irda.h> |
| 67 | #include <net/irda/irda_device.h> |
| 68 | |
| 69 | #include "nsc-ircc.h" |
| 70 | |
| 71 | #define CHIP_IO_EXTENT 8 |
| 72 | #define BROKEN_DONGLE_ID |
| 73 | |
| 74 | static char *driver_name = "nsc-ircc"; |
| 75 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 76 | /* Power Management */ |
| 77 | #define NSC_IRCC_DRIVER_NAME "nsc-ircc" |
| 78 | static int nsc_ircc_suspend(struct platform_device *dev, pm_message_t state); |
| 79 | static int nsc_ircc_resume(struct platform_device *dev); |
| 80 | |
| 81 | static struct platform_driver nsc_ircc_driver = { |
| 82 | .suspend = nsc_ircc_suspend, |
| 83 | .resume = nsc_ircc_resume, |
| 84 | .driver = { |
| 85 | .name = NSC_IRCC_DRIVER_NAME, |
| 86 | }, |
| 87 | }; |
| 88 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | /* Module parameters */ |
| 90 | static int qos_mtt_bits = 0x07; /* 1 ms or more */ |
| 91 | static int dongle_id; |
| 92 | |
| 93 | /* Use BIOS settions by default, but user may supply module parameters */ |
Jean Tourrilhes | 0ed79c9 | 2006-03-20 18:59:40 -0800 | [diff] [blame] | 94 | static unsigned int io[] = { ~0, ~0, ~0, ~0, ~0 }; |
| 95 | static unsigned int irq[] = { 0, 0, 0, 0, 0 }; |
| 96 | static unsigned int dma[] = { 0, 0, 0, 0, 0 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | |
| 98 | static int nsc_ircc_probe_108(nsc_chip_t *chip, chipio_t *info); |
| 99 | static int nsc_ircc_probe_338(nsc_chip_t *chip, chipio_t *info); |
| 100 | static int nsc_ircc_probe_39x(nsc_chip_t *chip, chipio_t *info); |
| 101 | static int nsc_ircc_init_108(nsc_chip_t *chip, chipio_t *info); |
| 102 | static int nsc_ircc_init_338(nsc_chip_t *chip, chipio_t *info); |
| 103 | static int nsc_ircc_init_39x(nsc_chip_t *chip, chipio_t *info); |
Ingo Molnar | c17f888 | 2008-05-05 01:04:06 -0700 | [diff] [blame] | 104 | #ifdef CONFIG_PNP |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 105 | static int nsc_ircc_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *id); |
Ingo Molnar | c17f888 | 2008-05-05 01:04:06 -0700 | [diff] [blame] | 106 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | |
| 108 | /* These are the known NSC chips */ |
| 109 | static nsc_chip_t chips[] = { |
| 110 | /* Name, {cfg registers}, chip id index reg, chip id expected value, revision mask */ |
| 111 | { "PC87108", { 0x150, 0x398, 0xea }, 0x05, 0x10, 0xf0, |
| 112 | nsc_ircc_probe_108, nsc_ircc_init_108 }, |
| 113 | { "PC87338", { 0x398, 0x15c, 0x2e }, 0x08, 0xb0, 0xf8, |
| 114 | nsc_ircc_probe_338, nsc_ircc_init_338 }, |
| 115 | /* Contributed by Steffen Pingel - IBM X40 */ |
Lamarque Vieira Souza | 2fd19a6 | 2006-09-27 22:48:36 -0700 | [diff] [blame] | 116 | { "PC8738x", { 0x164e, 0x4e, 0x2e }, 0x20, 0xf4, 0xff, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | nsc_ircc_probe_39x, nsc_ircc_init_39x }, |
| 118 | /* Contributed by Jan Frey - IBM A30/A31 */ |
| 119 | { "PC8739x", { 0x2e, 0x4e, 0x0 }, 0x20, 0xea, 0xff, |
| 120 | nsc_ircc_probe_39x, nsc_ircc_init_39x }, |
Ben Collins | d83561a | 2006-06-26 00:02:47 -0700 | [diff] [blame] | 121 | /* IBM ThinkPads using PC8738x (T60/X60/Z60) */ |
| 122 | { "IBM-PC8738x", { 0x2e, 0x4e, 0x0 }, 0x20, 0xf4, 0xff, |
| 123 | nsc_ircc_probe_39x, nsc_ircc_init_39x }, |
| 124 | /* IBM ThinkPads using PC8394T (T43/R52/?) */ |
| 125 | { "IBM-PC8394T", { 0x2e, 0x4e, 0x0 }, 0x20, 0xf9, 0xff, |
| 126 | nsc_ircc_probe_39x, nsc_ircc_init_39x }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | { NULL } |
| 128 | }; |
| 129 | |
Jean Tourrilhes | 0ed79c9 | 2006-03-20 18:59:40 -0800 | [diff] [blame] | 130 | static struct nsc_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL, NULL }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
| 132 | static char *dongle_types[] = { |
| 133 | "Differential serial interface", |
| 134 | "Differential serial interface", |
| 135 | "Reserved", |
| 136 | "Reserved", |
| 137 | "Sharp RY5HD01", |
| 138 | "Reserved", |
| 139 | "Single-ended serial interface", |
| 140 | "Consumer-IR only", |
| 141 | "HP HSDL-2300, HP HSDL-3600/HSDL-3610", |
| 142 | "IBM31T1100 or Temic TFDS6000/TFDS6500", |
| 143 | "Reserved", |
| 144 | "Reserved", |
| 145 | "HP HSDL-1100/HSDL-2100", |
| 146 | "HP HSDL-1100/HSDL-2100", |
| 147 | "Supports SIR Mode only", |
| 148 | "No dongle connected", |
| 149 | }; |
| 150 | |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 151 | /* PNP probing */ |
| 152 | static chipio_t pnp_info; |
| 153 | static const struct pnp_device_id nsc_ircc_pnp_table[] = { |
| 154 | { .id = "NSC6001", .driver_data = 0 }, |
Ville Syrjala | 0230708 | 2008-07-08 03:07:16 -0700 | [diff] [blame] | 155 | { .id = "HWPC224", .driver_data = 0 }, |
Matthew Garrett | 1fa9817 | 2008-07-30 17:00:38 -0700 | [diff] [blame] | 156 | { .id = "IBM0071", .driver_data = NSC_FORCE_DONGLE_TYPE9 }, |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 157 | { } |
| 158 | }; |
| 159 | |
| 160 | MODULE_DEVICE_TABLE(pnp, nsc_ircc_pnp_table); |
| 161 | |
| 162 | static struct pnp_driver nsc_ircc_pnp_driver = { |
Ingo Molnar | c17f888 | 2008-05-05 01:04:06 -0700 | [diff] [blame] | 163 | #ifdef CONFIG_PNP |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 164 | .name = "nsc-ircc", |
| 165 | .id_table = nsc_ircc_pnp_table, |
| 166 | .probe = nsc_ircc_pnp_probe, |
Ingo Molnar | c17f888 | 2008-05-05 01:04:06 -0700 | [diff] [blame] | 167 | #endif |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 168 | }; |
| 169 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | /* Some prototypes */ |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 171 | static int nsc_ircc_open(chipio_t *info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | static int nsc_ircc_close(struct nsc_ircc_cb *self); |
| 173 | static int nsc_ircc_setup(chipio_t *info); |
| 174 | static void nsc_ircc_pio_receive(struct nsc_ircc_cb *self); |
| 175 | static int nsc_ircc_dma_receive(struct nsc_ircc_cb *self); |
| 176 | static int nsc_ircc_dma_receive_complete(struct nsc_ircc_cb *self, int iobase); |
Stephen Hemminger | 6518bbb | 2009-08-31 19:50:50 +0000 | [diff] [blame] | 177 | static netdev_tx_t nsc_ircc_hard_xmit_sir(struct sk_buff *skb, |
| 178 | struct net_device *dev); |
| 179 | static netdev_tx_t nsc_ircc_hard_xmit_fir(struct sk_buff *skb, |
| 180 | struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | static int nsc_ircc_pio_write(int iobase, __u8 *buf, int len, int fifo_size); |
| 182 | static void nsc_ircc_dma_xmit(struct nsc_ircc_cb *self, int iobase); |
| 183 | static __u8 nsc_ircc_change_speed(struct nsc_ircc_cb *self, __u32 baud); |
| 184 | static int nsc_ircc_is_receiving(struct nsc_ircc_cb *self); |
| 185 | static int nsc_ircc_read_dongle_id (int iobase); |
| 186 | static void nsc_ircc_init_dongle_interface (int iobase, int dongle_id); |
| 187 | |
| 188 | static int nsc_ircc_net_open(struct net_device *dev); |
| 189 | static int nsc_ircc_net_close(struct net_device *dev); |
| 190 | static int nsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 192 | /* Globals */ |
| 193 | static int pnp_registered; |
| 194 | static int pnp_succeeded; |
| 195 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | /* |
| 197 | * Function nsc_ircc_init () |
| 198 | * |
| 199 | * Initialize chip. Just try to find out how many chips we are dealing with |
| 200 | * and where they are |
| 201 | */ |
| 202 | static int __init nsc_ircc_init(void) |
| 203 | { |
| 204 | chipio_t info; |
| 205 | nsc_chip_t *chip; |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 206 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | int cfg_base; |
| 208 | int cfg, id; |
| 209 | int reg; |
| 210 | int i = 0; |
| 211 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 212 | ret = platform_driver_register(&nsc_ircc_driver); |
| 213 | if (ret) { |
| 214 | IRDA_ERROR("%s, Can't register driver!\n", driver_name); |
| 215 | return ret; |
| 216 | } |
| 217 | |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 218 | /* Register with PnP subsystem to detect disable ports */ |
| 219 | ret = pnp_register_driver(&nsc_ircc_pnp_driver); |
| 220 | |
Bjorn Helgaas | 803d0ab | 2006-03-27 01:17:06 -0800 | [diff] [blame] | 221 | if (!ret) |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 222 | pnp_registered = 1; |
| 223 | |
| 224 | ret = -ENODEV; |
| 225 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | /* Probe for all the NSC chipsets we know about */ |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 227 | for (chip = chips; chip->name ; chip++) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 228 | IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __func__, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | chip->name); |
| 230 | |
| 231 | /* Try all config registers for this chip */ |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 232 | for (cfg = 0; cfg < ARRAY_SIZE(chip->cfg); cfg++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | cfg_base = chip->cfg[cfg]; |
| 234 | if (!cfg_base) |
| 235 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | |
| 237 | /* Read index register */ |
| 238 | reg = inb(cfg_base); |
| 239 | if (reg == 0xff) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 240 | IRDA_DEBUG(2, "%s() no chip at 0x%03x\n", __func__, cfg_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | continue; |
| 242 | } |
| 243 | |
| 244 | /* Read chip identification register */ |
| 245 | outb(chip->cid_index, cfg_base); |
| 246 | id = inb(cfg_base+1); |
| 247 | if ((id & chip->cid_mask) == chip->cid_value) { |
| 248 | IRDA_DEBUG(2, "%s() Found %s chip, revision=%d\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 249 | __func__, chip->name, id & ~chip->cid_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 251 | /* |
| 252 | * If we found a correct PnP setting, |
| 253 | * we first try it. |
| 254 | */ |
| 255 | if (pnp_succeeded) { |
| 256 | memset(&info, 0, sizeof(chipio_t)); |
| 257 | info.cfg_base = cfg_base; |
| 258 | info.fir_base = pnp_info.fir_base; |
| 259 | info.dma = pnp_info.dma; |
| 260 | info.irq = pnp_info.irq; |
| 261 | |
| 262 | if (info.fir_base < 0x2000) { |
| 263 | IRDA_MESSAGE("%s, chip->init\n", driver_name); |
| 264 | chip->init(chip, &info); |
| 265 | } else |
| 266 | chip->probe(chip, &info); |
| 267 | |
| 268 | if (nsc_ircc_open(&info) >= 0) |
| 269 | ret = 0; |
| 270 | } |
| 271 | |
| 272 | /* |
| 273 | * Opening based on PnP values failed. |
| 274 | * Let's fallback to user values, or probe |
| 275 | * the chip. |
| 276 | */ |
| 277 | if (ret) { |
| 278 | IRDA_DEBUG(2, "%s, PnP init failed\n", driver_name); |
| 279 | memset(&info, 0, sizeof(chipio_t)); |
| 280 | info.cfg_base = cfg_base; |
| 281 | info.fir_base = io[i]; |
| 282 | info.dma = dma[i]; |
| 283 | info.irq = irq[i]; |
| 284 | |
| 285 | /* |
| 286 | * If the user supplies the base address, then |
| 287 | * we init the chip, if not we probe the values |
| 288 | * set by the BIOS |
| 289 | */ |
| 290 | if (io[i] < 0x2000) { |
| 291 | chip->init(chip, &info); |
| 292 | } else |
| 293 | chip->probe(chip, &info); |
| 294 | |
| 295 | if (nsc_ircc_open(&info) >= 0) |
| 296 | ret = 0; |
| 297 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | i++; |
| 299 | } else { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 300 | IRDA_DEBUG(2, "%s(), Wrong chip id=0x%02x\n", __func__, id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | } |
| 302 | } |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 303 | } |
| 304 | |
| 305 | if (ret) { |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 306 | platform_driver_unregister(&nsc_ircc_driver); |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 307 | pnp_unregister_driver(&nsc_ircc_pnp_driver); |
| 308 | pnp_registered = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | } |
| 310 | |
| 311 | return ret; |
| 312 | } |
| 313 | |
| 314 | /* |
| 315 | * Function nsc_ircc_cleanup () |
| 316 | * |
| 317 | * Close all configured chips |
| 318 | * |
| 319 | */ |
| 320 | static void __exit nsc_ircc_cleanup(void) |
| 321 | { |
| 322 | int i; |
| 323 | |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 324 | for (i = 0; i < ARRAY_SIZE(dev_self); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | if (dev_self[i]) |
| 326 | nsc_ircc_close(dev_self[i]); |
| 327 | } |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 328 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 329 | platform_driver_unregister(&nsc_ircc_driver); |
| 330 | |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 331 | if (pnp_registered) |
| 332 | pnp_unregister_driver(&nsc_ircc_pnp_driver); |
| 333 | |
| 334 | pnp_registered = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | } |
| 336 | |
Stephen Hemminger | c279b8c | 2009-03-20 19:35:39 +0000 | [diff] [blame] | 337 | static const struct net_device_ops nsc_ircc_sir_ops = { |
| 338 | .ndo_open = nsc_ircc_net_open, |
| 339 | .ndo_stop = nsc_ircc_net_close, |
| 340 | .ndo_start_xmit = nsc_ircc_hard_xmit_sir, |
| 341 | .ndo_do_ioctl = nsc_ircc_net_ioctl, |
| 342 | }; |
| 343 | |
| 344 | static const struct net_device_ops nsc_ircc_fir_ops = { |
| 345 | .ndo_open = nsc_ircc_net_open, |
| 346 | .ndo_stop = nsc_ircc_net_close, |
| 347 | .ndo_start_xmit = nsc_ircc_hard_xmit_fir, |
| 348 | .ndo_do_ioctl = nsc_ircc_net_ioctl, |
| 349 | }; |
| 350 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | /* |
| 352 | * Function nsc_ircc_open (iobase, irq) |
| 353 | * |
| 354 | * Open driver instance |
| 355 | * |
| 356 | */ |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 357 | static int __init nsc_ircc_open(chipio_t *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | { |
| 359 | struct net_device *dev; |
| 360 | struct nsc_ircc_cb *self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | void *ret; |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 362 | int err, chip_index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 364 | IRDA_DEBUG(2, "%s()\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 366 | |
| 367 | for (chip_index = 0; chip_index < ARRAY_SIZE(dev_self); chip_index++) { |
| 368 | if (!dev_self[chip_index]) |
| 369 | break; |
| 370 | } |
| 371 | |
| 372 | if (chip_index == ARRAY_SIZE(dev_self)) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 373 | IRDA_ERROR("%s(), maximum number of supported chips reached!\n", __func__); |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 374 | return -ENOMEM; |
| 375 | } |
| 376 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | IRDA_MESSAGE("%s, Found chip at base=0x%03x\n", driver_name, |
| 378 | info->cfg_base); |
| 379 | |
| 380 | if ((nsc_ircc_setup(info)) == -1) |
| 381 | return -1; |
| 382 | |
| 383 | IRDA_MESSAGE("%s, driver loaded (Dag Brattli)\n", driver_name); |
| 384 | |
| 385 | dev = alloc_irdadev(sizeof(struct nsc_ircc_cb)); |
| 386 | if (dev == NULL) { |
| 387 | IRDA_ERROR("%s(), can't allocate memory for " |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 388 | "control block!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | return -ENOMEM; |
| 390 | } |
| 391 | |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 392 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | self->netdev = dev; |
| 394 | spin_lock_init(&self->lock); |
| 395 | |
| 396 | /* Need to store self somewhere */ |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 397 | dev_self[chip_index] = self; |
| 398 | self->index = chip_index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | |
| 400 | /* Initialize IO */ |
| 401 | self->io.cfg_base = info->cfg_base; |
| 402 | self->io.fir_base = info->fir_base; |
| 403 | self->io.irq = info->irq; |
| 404 | self->io.fir_ext = CHIP_IO_EXTENT; |
| 405 | self->io.dma = info->dma; |
| 406 | self->io.fifo_size = 32; |
| 407 | |
| 408 | /* Reserve the ioports that we need */ |
| 409 | ret = request_region(self->io.fir_base, self->io.fir_ext, driver_name); |
| 410 | if (!ret) { |
| 411 | IRDA_WARNING("%s(), can't get iobase of 0x%03x\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 412 | __func__, self->io.fir_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | err = -ENODEV; |
| 414 | goto out1; |
| 415 | } |
| 416 | |
| 417 | /* Initialize QoS for this device */ |
| 418 | irda_init_max_qos_capabilies(&self->qos); |
| 419 | |
| 420 | /* The only value we must override it the baudrate */ |
| 421 | self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600| |
| 422 | IR_115200|IR_576000|IR_1152000 |(IR_4000000 << 8); |
| 423 | |
| 424 | self->qos.min_turn_time.bits = qos_mtt_bits; |
| 425 | irda_qos_bits_to_value(&self->qos); |
| 426 | |
| 427 | /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */ |
| 428 | self->rx_buff.truesize = 14384; |
| 429 | self->tx_buff.truesize = 14384; |
| 430 | |
| 431 | /* Allocate memory if needed */ |
| 432 | self->rx_buff.head = |
| 433 | dma_alloc_coherent(NULL, self->rx_buff.truesize, |
| 434 | &self->rx_buff_dma, GFP_KERNEL); |
| 435 | if (self->rx_buff.head == NULL) { |
| 436 | err = -ENOMEM; |
| 437 | goto out2; |
| 438 | |
| 439 | } |
| 440 | memset(self->rx_buff.head, 0, self->rx_buff.truesize); |
| 441 | |
| 442 | self->tx_buff.head = |
| 443 | dma_alloc_coherent(NULL, self->tx_buff.truesize, |
| 444 | &self->tx_buff_dma, GFP_KERNEL); |
| 445 | if (self->tx_buff.head == NULL) { |
| 446 | err = -ENOMEM; |
| 447 | goto out3; |
| 448 | } |
| 449 | memset(self->tx_buff.head, 0, self->tx_buff.truesize); |
| 450 | |
| 451 | self->rx_buff.in_frame = FALSE; |
| 452 | self->rx_buff.state = OUTSIDE_FRAME; |
| 453 | self->tx_buff.data = self->tx_buff.head; |
| 454 | self->rx_buff.data = self->rx_buff.head; |
| 455 | |
| 456 | /* Reset Tx queue info */ |
| 457 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; |
| 458 | self->tx_fifo.tail = self->tx_buff.head; |
| 459 | |
| 460 | /* Override the network functions we need to use */ |
Stephen Hemminger | c279b8c | 2009-03-20 19:35:39 +0000 | [diff] [blame] | 461 | dev->netdev_ops = &nsc_ircc_sir_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | |
| 463 | err = register_netdev(dev); |
| 464 | if (err) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 465 | IRDA_ERROR("%s(), register_netdev() failed!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | goto out4; |
| 467 | } |
| 468 | IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name); |
| 469 | |
| 470 | /* Check if user has supplied a valid dongle id or not */ |
| 471 | if ((dongle_id <= 0) || |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 472 | (dongle_id >= ARRAY_SIZE(dongle_types))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | dongle_id = nsc_ircc_read_dongle_id(self->io.fir_base); |
| 474 | |
| 475 | IRDA_MESSAGE("%s, Found dongle: %s\n", driver_name, |
| 476 | dongle_types[dongle_id]); |
| 477 | } else { |
| 478 | IRDA_MESSAGE("%s, Using dongle: %s\n", driver_name, |
| 479 | dongle_types[dongle_id]); |
| 480 | } |
| 481 | |
| 482 | self->io.dongle_id = dongle_id; |
| 483 | nsc_ircc_init_dongle_interface(self->io.fir_base, dongle_id); |
| 484 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 485 | self->pldev = platform_device_register_simple(NSC_IRCC_DRIVER_NAME, |
| 486 | self->index, NULL, 0); |
| 487 | if (IS_ERR(self->pldev)) { |
| 488 | err = PTR_ERR(self->pldev); |
| 489 | goto out5; |
| 490 | } |
| 491 | platform_set_drvdata(self->pldev, self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 493 | return chip_index; |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 494 | |
| 495 | out5: |
| 496 | unregister_netdev(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | out4: |
| 498 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 499 | self->tx_buff.head, self->tx_buff_dma); |
| 500 | out3: |
| 501 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 502 | self->rx_buff.head, self->rx_buff_dma); |
| 503 | out2: |
| 504 | release_region(self->io.fir_base, self->io.fir_ext); |
| 505 | out1: |
| 506 | free_netdev(dev); |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 507 | dev_self[chip_index] = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | return err; |
| 509 | } |
| 510 | |
| 511 | /* |
| 512 | * Function nsc_ircc_close (self) |
| 513 | * |
| 514 | * Close driver instance |
| 515 | * |
| 516 | */ |
| 517 | static int __exit nsc_ircc_close(struct nsc_ircc_cb *self) |
| 518 | { |
| 519 | int iobase; |
| 520 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 521 | IRDA_DEBUG(4, "%s()\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | |
| 523 | IRDA_ASSERT(self != NULL, return -1;); |
| 524 | |
| 525 | iobase = self->io.fir_base; |
| 526 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 527 | platform_device_unregister(self->pldev); |
| 528 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | /* Remove netdevice */ |
| 530 | unregister_netdev(self->netdev); |
| 531 | |
| 532 | /* Release the PORT that this driver is using */ |
| 533 | IRDA_DEBUG(4, "%s(), Releasing Region %03x\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 534 | __func__, self->io.fir_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | release_region(self->io.fir_base, self->io.fir_ext); |
| 536 | |
| 537 | if (self->tx_buff.head) |
| 538 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 539 | self->tx_buff.head, self->tx_buff_dma); |
| 540 | |
| 541 | if (self->rx_buff.head) |
| 542 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 543 | self->rx_buff.head, self->rx_buff_dma); |
| 544 | |
| 545 | dev_self[self->index] = NULL; |
| 546 | free_netdev(self->netdev); |
| 547 | |
| 548 | return 0; |
| 549 | } |
| 550 | |
| 551 | /* |
| 552 | * Function nsc_ircc_init_108 (iobase, cfg_base, irq, dma) |
| 553 | * |
| 554 | * Initialize the NSC '108 chip |
| 555 | * |
| 556 | */ |
| 557 | static int nsc_ircc_init_108(nsc_chip_t *chip, chipio_t *info) |
| 558 | { |
| 559 | int cfg_base = info->cfg_base; |
| 560 | __u8 temp=0; |
| 561 | |
| 562 | outb(2, cfg_base); /* Mode Control Register (MCTL) */ |
| 563 | outb(0x00, cfg_base+1); /* Disable device */ |
| 564 | |
| 565 | /* Base Address and Interrupt Control Register (BAIC) */ |
| 566 | outb(CFG_108_BAIC, cfg_base); |
| 567 | switch (info->fir_base) { |
| 568 | case 0x3e8: outb(0x14, cfg_base+1); break; |
| 569 | case 0x2e8: outb(0x15, cfg_base+1); break; |
| 570 | case 0x3f8: outb(0x16, cfg_base+1); break; |
| 571 | case 0x2f8: outb(0x17, cfg_base+1); break; |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 572 | default: IRDA_ERROR("%s(), invalid base_address", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | } |
| 574 | |
| 575 | /* Control Signal Routing Register (CSRT) */ |
| 576 | switch (info->irq) { |
| 577 | case 3: temp = 0x01; break; |
| 578 | case 4: temp = 0x02; break; |
| 579 | case 5: temp = 0x03; break; |
| 580 | case 7: temp = 0x04; break; |
| 581 | case 9: temp = 0x05; break; |
| 582 | case 11: temp = 0x06; break; |
| 583 | case 15: temp = 0x07; break; |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 584 | default: IRDA_ERROR("%s(), invalid irq", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | } |
| 586 | outb(CFG_108_CSRT, cfg_base); |
| 587 | |
| 588 | switch (info->dma) { |
| 589 | case 0: outb(0x08+temp, cfg_base+1); break; |
| 590 | case 1: outb(0x10+temp, cfg_base+1); break; |
| 591 | case 3: outb(0x18+temp, cfg_base+1); break; |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 592 | default: IRDA_ERROR("%s(), invalid dma", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | } |
| 594 | |
| 595 | outb(CFG_108_MCTL, cfg_base); /* Mode Control Register (MCTL) */ |
| 596 | outb(0x03, cfg_base+1); /* Enable device */ |
| 597 | |
| 598 | return 0; |
| 599 | } |
| 600 | |
| 601 | /* |
| 602 | * Function nsc_ircc_probe_108 (chip, info) |
| 603 | * |
| 604 | * |
| 605 | * |
| 606 | */ |
| 607 | static int nsc_ircc_probe_108(nsc_chip_t *chip, chipio_t *info) |
| 608 | { |
| 609 | int cfg_base = info->cfg_base; |
| 610 | int reg; |
| 611 | |
| 612 | /* Read address and interrupt control register (BAIC) */ |
| 613 | outb(CFG_108_BAIC, cfg_base); |
| 614 | reg = inb(cfg_base+1); |
| 615 | |
| 616 | switch (reg & 0x03) { |
| 617 | case 0: |
| 618 | info->fir_base = 0x3e8; |
| 619 | break; |
| 620 | case 1: |
| 621 | info->fir_base = 0x2e8; |
| 622 | break; |
| 623 | case 2: |
| 624 | info->fir_base = 0x3f8; |
| 625 | break; |
| 626 | case 3: |
| 627 | info->fir_base = 0x2f8; |
| 628 | break; |
| 629 | } |
| 630 | info->sir_base = info->fir_base; |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 631 | IRDA_DEBUG(2, "%s(), probing fir_base=0x%03x\n", __func__, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | info->fir_base); |
| 633 | |
| 634 | /* Read control signals routing register (CSRT) */ |
| 635 | outb(CFG_108_CSRT, cfg_base); |
| 636 | reg = inb(cfg_base+1); |
| 637 | |
| 638 | switch (reg & 0x07) { |
| 639 | case 0: |
| 640 | info->irq = -1; |
| 641 | break; |
| 642 | case 1: |
| 643 | info->irq = 3; |
| 644 | break; |
| 645 | case 2: |
| 646 | info->irq = 4; |
| 647 | break; |
| 648 | case 3: |
| 649 | info->irq = 5; |
| 650 | break; |
| 651 | case 4: |
| 652 | info->irq = 7; |
| 653 | break; |
| 654 | case 5: |
| 655 | info->irq = 9; |
| 656 | break; |
| 657 | case 6: |
| 658 | info->irq = 11; |
| 659 | break; |
| 660 | case 7: |
| 661 | info->irq = 15; |
| 662 | break; |
| 663 | } |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 664 | IRDA_DEBUG(2, "%s(), probing irq=%d\n", __func__, info->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | |
| 666 | /* Currently we only read Rx DMA but it will also be used for Tx */ |
| 667 | switch ((reg >> 3) & 0x03) { |
| 668 | case 0: |
| 669 | info->dma = -1; |
| 670 | break; |
| 671 | case 1: |
| 672 | info->dma = 0; |
| 673 | break; |
| 674 | case 2: |
| 675 | info->dma = 1; |
| 676 | break; |
| 677 | case 3: |
| 678 | info->dma = 3; |
| 679 | break; |
| 680 | } |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 681 | IRDA_DEBUG(2, "%s(), probing dma=%d\n", __func__, info->dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | |
| 683 | /* Read mode control register (MCTL) */ |
| 684 | outb(CFG_108_MCTL, cfg_base); |
| 685 | reg = inb(cfg_base+1); |
| 686 | |
| 687 | info->enabled = reg & 0x01; |
| 688 | info->suspended = !((reg >> 1) & 0x01); |
| 689 | |
| 690 | return 0; |
| 691 | } |
| 692 | |
| 693 | /* |
| 694 | * Function nsc_ircc_init_338 (chip, info) |
| 695 | * |
| 696 | * Initialize the NSC '338 chip. Remember that the 87338 needs two |
| 697 | * consecutive writes to the data registers while CPU interrupts are |
| 698 | * disabled. The 97338 does not require this, but shouldn't be any |
| 699 | * harm if we do it anyway. |
| 700 | */ |
| 701 | static int nsc_ircc_init_338(nsc_chip_t *chip, chipio_t *info) |
| 702 | { |
| 703 | /* No init yet */ |
| 704 | |
| 705 | return 0; |
| 706 | } |
| 707 | |
| 708 | /* |
| 709 | * Function nsc_ircc_probe_338 (chip, info) |
| 710 | * |
| 711 | * |
| 712 | * |
| 713 | */ |
| 714 | static int nsc_ircc_probe_338(nsc_chip_t *chip, chipio_t *info) |
| 715 | { |
| 716 | int cfg_base = info->cfg_base; |
| 717 | int reg, com = 0; |
| 718 | int pnp; |
| 719 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 720 | /* Read function enable register (FER) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | outb(CFG_338_FER, cfg_base); |
| 722 | reg = inb(cfg_base+1); |
| 723 | |
| 724 | info->enabled = (reg >> 2) & 0x01; |
| 725 | |
| 726 | /* Check if we are in Legacy or PnP mode */ |
| 727 | outb(CFG_338_PNP0, cfg_base); |
| 728 | reg = inb(cfg_base+1); |
| 729 | |
| 730 | pnp = (reg >> 3) & 0x01; |
| 731 | if (pnp) { |
| 732 | IRDA_DEBUG(2, "(), Chip is in PnP mode\n"); |
| 733 | outb(0x46, cfg_base); |
| 734 | reg = (inb(cfg_base+1) & 0xfe) << 2; |
| 735 | |
| 736 | outb(0x47, cfg_base); |
| 737 | reg |= ((inb(cfg_base+1) & 0xfc) << 8); |
| 738 | |
| 739 | info->fir_base = reg; |
| 740 | } else { |
| 741 | /* Read function address register (FAR) */ |
| 742 | outb(CFG_338_FAR, cfg_base); |
| 743 | reg = inb(cfg_base+1); |
| 744 | |
| 745 | switch ((reg >> 4) & 0x03) { |
| 746 | case 0: |
| 747 | info->fir_base = 0x3f8; |
| 748 | break; |
| 749 | case 1: |
| 750 | info->fir_base = 0x2f8; |
| 751 | break; |
| 752 | case 2: |
| 753 | com = 3; |
| 754 | break; |
| 755 | case 3: |
| 756 | com = 4; |
| 757 | break; |
| 758 | } |
| 759 | |
| 760 | if (com) { |
| 761 | switch ((reg >> 6) & 0x03) { |
| 762 | case 0: |
| 763 | if (com == 3) |
| 764 | info->fir_base = 0x3e8; |
| 765 | else |
| 766 | info->fir_base = 0x2e8; |
| 767 | break; |
| 768 | case 1: |
| 769 | if (com == 3) |
| 770 | info->fir_base = 0x338; |
| 771 | else |
| 772 | info->fir_base = 0x238; |
| 773 | break; |
| 774 | case 2: |
| 775 | if (com == 3) |
| 776 | info->fir_base = 0x2e8; |
| 777 | else |
| 778 | info->fir_base = 0x2e0; |
| 779 | break; |
| 780 | case 3: |
| 781 | if (com == 3) |
| 782 | info->fir_base = 0x220; |
| 783 | else |
| 784 | info->fir_base = 0x228; |
| 785 | break; |
| 786 | } |
| 787 | } |
| 788 | } |
| 789 | info->sir_base = info->fir_base; |
| 790 | |
| 791 | /* Read PnP register 1 (PNP1) */ |
| 792 | outb(CFG_338_PNP1, cfg_base); |
| 793 | reg = inb(cfg_base+1); |
| 794 | |
| 795 | info->irq = reg >> 4; |
| 796 | |
| 797 | /* Read PnP register 3 (PNP3) */ |
| 798 | outb(CFG_338_PNP3, cfg_base); |
| 799 | reg = inb(cfg_base+1); |
| 800 | |
| 801 | info->dma = (reg & 0x07) - 1; |
| 802 | |
| 803 | /* Read power and test register (PTR) */ |
| 804 | outb(CFG_338_PTR, cfg_base); |
| 805 | reg = inb(cfg_base+1); |
| 806 | |
| 807 | info->suspended = reg & 0x01; |
| 808 | |
| 809 | return 0; |
| 810 | } |
| 811 | |
| 812 | |
| 813 | /* |
| 814 | * Function nsc_ircc_init_39x (chip, info) |
| 815 | * |
| 816 | * Now that we know it's a '39x (see probe below), we need to |
| 817 | * configure it so we can use it. |
| 818 | * |
| 819 | * The NSC '338 chip is a Super I/O chip with a "bank" architecture, |
| 820 | * the configuration of the different functionality (serial, parallel, |
| 821 | * floppy...) are each in a different bank (Logical Device Number). |
| 822 | * The base address, irq and dma configuration registers are common |
| 823 | * to all functionalities (index 0x30 to 0x7F). |
| 824 | * There is only one configuration register specific to the |
| 825 | * serial port, CFG_39X_SPC. |
| 826 | * JeanII |
| 827 | * |
| 828 | * Note : this code was written by Jan Frey <janfrey@web.de> |
| 829 | */ |
| 830 | static int nsc_ircc_init_39x(nsc_chip_t *chip, chipio_t *info) |
| 831 | { |
| 832 | int cfg_base = info->cfg_base; |
| 833 | int enabled; |
| 834 | |
Alexey Dobriyan | 7f927fc | 2006-03-28 01:56:53 -0800 | [diff] [blame] | 835 | /* User is sure about his config... accept it. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | IRDA_DEBUG(2, "%s(): nsc_ircc_init_39x (user settings): " |
| 837 | "io=0x%04x, irq=%d, dma=%d\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 838 | __func__, info->fir_base, info->irq, info->dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | |
| 840 | /* Access bank for SP2 */ |
| 841 | outb(CFG_39X_LDN, cfg_base); |
| 842 | outb(0x02, cfg_base+1); |
| 843 | |
| 844 | /* Configure SP2 */ |
| 845 | |
| 846 | /* We want to enable the device if not enabled */ |
| 847 | outb(CFG_39X_ACT, cfg_base); |
| 848 | enabled = inb(cfg_base+1) & 0x01; |
| 849 | |
| 850 | if (!enabled) { |
| 851 | /* Enable the device */ |
| 852 | outb(CFG_39X_SIOCF1, cfg_base); |
| 853 | outb(0x01, cfg_base+1); |
| 854 | /* May want to update info->enabled. Jean II */ |
| 855 | } |
| 856 | |
| 857 | /* Enable UART bank switching (bit 7) ; Sets the chip to normal |
| 858 | * power mode (wake up from sleep mode) (bit 1) */ |
| 859 | outb(CFG_39X_SPC, cfg_base); |
| 860 | outb(0x82, cfg_base+1); |
| 861 | |
| 862 | return 0; |
| 863 | } |
| 864 | |
| 865 | /* |
| 866 | * Function nsc_ircc_probe_39x (chip, info) |
| 867 | * |
| 868 | * Test if we really have a '39x chip at the given address |
| 869 | * |
| 870 | * Note : this code was written by Jan Frey <janfrey@web.de> |
| 871 | */ |
| 872 | static int nsc_ircc_probe_39x(nsc_chip_t *chip, chipio_t *info) |
| 873 | { |
| 874 | int cfg_base = info->cfg_base; |
| 875 | int reg1, reg2, irq, irqt, dma1, dma2; |
| 876 | int enabled, susp; |
| 877 | |
| 878 | IRDA_DEBUG(2, "%s(), nsc_ircc_probe_39x, base=%d\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 879 | __func__, cfg_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | |
| 881 | /* This function should be executed with irq off to avoid |
| 882 | * another driver messing with the Super I/O bank - Jean II */ |
| 883 | |
| 884 | /* Access bank for SP2 */ |
| 885 | outb(CFG_39X_LDN, cfg_base); |
| 886 | outb(0x02, cfg_base+1); |
| 887 | |
| 888 | /* Read infos about SP2 ; store in info struct */ |
| 889 | outb(CFG_39X_BASEH, cfg_base); |
| 890 | reg1 = inb(cfg_base+1); |
| 891 | outb(CFG_39X_BASEL, cfg_base); |
| 892 | reg2 = inb(cfg_base+1); |
| 893 | info->fir_base = (reg1 << 8) | reg2; |
| 894 | |
| 895 | outb(CFG_39X_IRQNUM, cfg_base); |
| 896 | irq = inb(cfg_base+1); |
| 897 | outb(CFG_39X_IRQSEL, cfg_base); |
| 898 | irqt = inb(cfg_base+1); |
| 899 | info->irq = irq; |
| 900 | |
| 901 | outb(CFG_39X_DMA0, cfg_base); |
| 902 | dma1 = inb(cfg_base+1); |
| 903 | outb(CFG_39X_DMA1, cfg_base); |
| 904 | dma2 = inb(cfg_base+1); |
| 905 | info->dma = dma1 -1; |
| 906 | |
| 907 | outb(CFG_39X_ACT, cfg_base); |
| 908 | info->enabled = enabled = inb(cfg_base+1) & 0x01; |
| 909 | |
| 910 | outb(CFG_39X_SPC, cfg_base); |
| 911 | susp = 1 - ((inb(cfg_base+1) & 0x02) >> 1); |
| 912 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 913 | IRDA_DEBUG(2, "%s(): io=0x%02x%02x, irq=%d (type %d), rxdma=%d, txdma=%d, enabled=%d (suspended=%d)\n", __func__, reg1,reg2,irq,irqt,dma1,dma2,enabled,susp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | |
| 915 | /* Configure SP2 */ |
| 916 | |
| 917 | /* We want to enable the device if not enabled */ |
| 918 | outb(CFG_39X_ACT, cfg_base); |
| 919 | enabled = inb(cfg_base+1) & 0x01; |
| 920 | |
| 921 | if (!enabled) { |
| 922 | /* Enable the device */ |
| 923 | outb(CFG_39X_SIOCF1, cfg_base); |
| 924 | outb(0x01, cfg_base+1); |
| 925 | /* May want to update info->enabled. Jean II */ |
| 926 | } |
| 927 | |
| 928 | /* Enable UART bank switching (bit 7) ; Sets the chip to normal |
| 929 | * power mode (wake up from sleep mode) (bit 1) */ |
| 930 | outb(CFG_39X_SPC, cfg_base); |
| 931 | outb(0x82, cfg_base+1); |
| 932 | |
| 933 | return 0; |
| 934 | } |
| 935 | |
Ingo Molnar | c17f888 | 2008-05-05 01:04:06 -0700 | [diff] [blame] | 936 | #ifdef CONFIG_PNP |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 937 | /* PNP probing */ |
| 938 | static int nsc_ircc_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *id) |
| 939 | { |
| 940 | memset(&pnp_info, 0, sizeof(chipio_t)); |
| 941 | pnp_info.irq = -1; |
| 942 | pnp_info.dma = -1; |
| 943 | pnp_succeeded = 1; |
| 944 | |
Matthew Garrett | 1fa9817 | 2008-07-30 17:00:38 -0700 | [diff] [blame] | 945 | if (id->driver_data & NSC_FORCE_DONGLE_TYPE9) |
| 946 | dongle_id = 0x9; |
| 947 | |
| 948 | /* There doesn't seem to be any way of getting the cfg_base. |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 949 | * On my box, cfg_base is in the PnP descriptor of the |
| 950 | * motherboard. Oh well... Jean II */ |
| 951 | |
| 952 | if (pnp_port_valid(dev, 0) && |
| 953 | !(pnp_port_flags(dev, 0) & IORESOURCE_DISABLED)) |
| 954 | pnp_info.fir_base = pnp_port_start(dev, 0); |
| 955 | |
| 956 | if (pnp_irq_valid(dev, 0) && |
| 957 | !(pnp_irq_flags(dev, 0) & IORESOURCE_DISABLED)) |
| 958 | pnp_info.irq = pnp_irq(dev, 0); |
| 959 | |
| 960 | if (pnp_dma_valid(dev, 0) && |
| 961 | !(pnp_dma_flags(dev, 0) & IORESOURCE_DISABLED)) |
| 962 | pnp_info.dma = pnp_dma(dev, 0); |
| 963 | |
| 964 | IRDA_DEBUG(0, "%s() : From PnP, found firbase 0x%03X ; irq %d ; dma %d.\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 965 | __func__, pnp_info.fir_base, pnp_info.irq, pnp_info.dma); |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 966 | |
| 967 | if((pnp_info.fir_base == 0) || |
| 968 | (pnp_info.irq == -1) || (pnp_info.dma == -1)) { |
| 969 | /* Returning an error will disable the device. Yuck ! */ |
| 970 | //return -EINVAL; |
| 971 | pnp_succeeded = 0; |
| 972 | } |
| 973 | |
| 974 | return 0; |
| 975 | } |
Ingo Molnar | c17f888 | 2008-05-05 01:04:06 -0700 | [diff] [blame] | 976 | #endif |
Jean Tourrilhes | ec4f32d | 2006-03-20 18:54:03 -0800 | [diff] [blame] | 977 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | /* |
| 979 | * Function nsc_ircc_setup (info) |
| 980 | * |
| 981 | * Returns non-negative on success. |
| 982 | * |
| 983 | */ |
| 984 | static int nsc_ircc_setup(chipio_t *info) |
| 985 | { |
| 986 | int version; |
| 987 | int iobase = info->fir_base; |
| 988 | |
| 989 | /* Read the Module ID */ |
| 990 | switch_bank(iobase, BANK3); |
| 991 | version = inb(iobase+MID); |
| 992 | |
| 993 | IRDA_DEBUG(2, "%s() Driver %s Found chip version %02x\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 994 | __func__, driver_name, version); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | |
| 996 | /* Should be 0x2? */ |
| 997 | if (0x20 != (version & 0xf0)) { |
| 998 | IRDA_ERROR("%s, Wrong chip version %02x\n", |
| 999 | driver_name, version); |
| 1000 | return -1; |
| 1001 | } |
| 1002 | |
| 1003 | /* Switch to advanced mode */ |
| 1004 | switch_bank(iobase, BANK2); |
| 1005 | outb(ECR1_EXT_SL, iobase+ECR1); |
| 1006 | switch_bank(iobase, BANK0); |
| 1007 | |
| 1008 | /* Set FIFO threshold to TX17, RX16, reset and enable FIFO's */ |
| 1009 | switch_bank(iobase, BANK0); |
| 1010 | outb(FCR_RXTH|FCR_TXTH|FCR_TXSR|FCR_RXSR|FCR_FIFO_EN, iobase+FCR); |
| 1011 | |
| 1012 | outb(0x03, iobase+LCR); /* 8 bit word length */ |
| 1013 | outb(MCR_SIR, iobase+MCR); /* Start at SIR-mode, also clears LSR*/ |
| 1014 | |
| 1015 | /* Set FIFO size to 32 */ |
| 1016 | switch_bank(iobase, BANK2); |
| 1017 | outb(EXCR2_RFSIZ|EXCR2_TFSIZ, iobase+EXCR2); |
| 1018 | |
| 1019 | /* IRCR2: FEND_MD is not set */ |
| 1020 | switch_bank(iobase, BANK5); |
| 1021 | outb(0x02, iobase+4); |
| 1022 | |
| 1023 | /* Make sure that some defaults are OK */ |
| 1024 | switch_bank(iobase, BANK6); |
| 1025 | outb(0x20, iobase+0); /* Set 32 bits FIR CRC */ |
| 1026 | outb(0x0a, iobase+1); /* Set MIR pulse width */ |
| 1027 | outb(0x0d, iobase+2); /* Set SIR pulse width to 1.6us */ |
| 1028 | outb(0x2a, iobase+4); /* Set beginning frag, and preamble length */ |
| 1029 | |
| 1030 | /* Enable receive interrupts */ |
| 1031 | switch_bank(iobase, BANK0); |
| 1032 | outb(IER_RXHDL_IE, iobase+IER); |
| 1033 | |
| 1034 | return 0; |
| 1035 | } |
| 1036 | |
| 1037 | /* |
| 1038 | * Function nsc_ircc_read_dongle_id (void) |
| 1039 | * |
| 1040 | * Try to read dongle indentification. This procedure needs to be executed |
| 1041 | * once after power-on/reset. It also needs to be used whenever you suspect |
| 1042 | * that the user may have plugged/unplugged the IrDA Dongle. |
| 1043 | */ |
| 1044 | static int nsc_ircc_read_dongle_id (int iobase) |
| 1045 | { |
| 1046 | int dongle_id; |
| 1047 | __u8 bank; |
| 1048 | |
| 1049 | bank = inb(iobase+BSR); |
| 1050 | |
| 1051 | /* Select Bank 7 */ |
| 1052 | switch_bank(iobase, BANK7); |
| 1053 | |
| 1054 | /* IRCFG4: IRSL0_DS and IRSL21_DS are cleared */ |
| 1055 | outb(0x00, iobase+7); |
| 1056 | |
| 1057 | /* ID0, 1, and 2 are pulled up/down very slowly */ |
| 1058 | udelay(50); |
| 1059 | |
| 1060 | /* IRCFG1: read the ID bits */ |
| 1061 | dongle_id = inb(iobase+4) & 0x0f; |
| 1062 | |
| 1063 | #ifdef BROKEN_DONGLE_ID |
| 1064 | if (dongle_id == 0x0a) |
| 1065 | dongle_id = 0x09; |
| 1066 | #endif |
| 1067 | /* Go back to bank 0 before returning */ |
| 1068 | switch_bank(iobase, BANK0); |
| 1069 | |
| 1070 | outb(bank, iobase+BSR); |
| 1071 | |
| 1072 | return dongle_id; |
| 1073 | } |
| 1074 | |
| 1075 | /* |
| 1076 | * Function nsc_ircc_init_dongle_interface (iobase, dongle_id) |
| 1077 | * |
| 1078 | * This function initializes the dongle for the transceiver that is |
| 1079 | * used. This procedure needs to be executed once after |
| 1080 | * power-on/reset. It also needs to be used whenever you suspect that |
| 1081 | * the dongle is changed. |
| 1082 | */ |
| 1083 | static void nsc_ircc_init_dongle_interface (int iobase, int dongle_id) |
| 1084 | { |
| 1085 | int bank; |
| 1086 | |
| 1087 | /* Save current bank */ |
| 1088 | bank = inb(iobase+BSR); |
| 1089 | |
| 1090 | /* Select Bank 7 */ |
| 1091 | switch_bank(iobase, BANK7); |
| 1092 | |
| 1093 | /* IRCFG4: set according to dongle_id */ |
| 1094 | switch (dongle_id) { |
| 1095 | case 0x00: /* same as */ |
| 1096 | case 0x01: /* Differential serial interface */ |
| 1097 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1098 | __func__, dongle_types[dongle_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | break; |
| 1100 | case 0x02: /* same as */ |
| 1101 | case 0x03: /* Reserved */ |
| 1102 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1103 | __func__, dongle_types[dongle_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | break; |
| 1105 | case 0x04: /* Sharp RY5HD01 */ |
| 1106 | break; |
| 1107 | case 0x05: /* Reserved, but this is what the Thinkpad reports */ |
| 1108 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1109 | __func__, dongle_types[dongle_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | break; |
| 1111 | case 0x06: /* Single-ended serial interface */ |
| 1112 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1113 | __func__, dongle_types[dongle_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | break; |
| 1115 | case 0x07: /* Consumer-IR only */ |
| 1116 | IRDA_DEBUG(0, "%s(), %s is not for IrDA mode\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1117 | __func__, dongle_types[dongle_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | break; |
| 1119 | case 0x08: /* HP HSDL-2300, HP HSDL-3600/HSDL-3610 */ |
| 1120 | IRDA_DEBUG(0, "%s(), %s\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1121 | __func__, dongle_types[dongle_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1122 | break; |
| 1123 | case 0x09: /* IBM31T1100 or Temic TFDS6000/TFDS6500 */ |
| 1124 | outb(0x28, iobase+7); /* Set irsl[0-2] as output */ |
| 1125 | break; |
| 1126 | case 0x0A: /* same as */ |
| 1127 | case 0x0B: /* Reserved */ |
| 1128 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1129 | __func__, dongle_types[dongle_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1130 | break; |
| 1131 | case 0x0C: /* same as */ |
| 1132 | case 0x0D: /* HP HSDL-1100/HSDL-2100 */ |
| 1133 | /* |
| 1134 | * Set irsl0 as input, irsl[1-2] as output, and separate |
| 1135 | * inputs are used for SIR and MIR/FIR |
| 1136 | */ |
| 1137 | outb(0x48, iobase+7); |
| 1138 | break; |
| 1139 | case 0x0E: /* Supports SIR Mode only */ |
| 1140 | outb(0x28, iobase+7); /* Set irsl[0-2] as output */ |
| 1141 | break; |
| 1142 | case 0x0F: /* No dongle connected */ |
| 1143 | IRDA_DEBUG(0, "%s(), %s\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1144 | __func__, dongle_types[dongle_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | |
| 1146 | switch_bank(iobase, BANK0); |
| 1147 | outb(0x62, iobase+MCR); |
| 1148 | break; |
| 1149 | default: |
| 1150 | IRDA_DEBUG(0, "%s(), invalid dongle_id %#x", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1151 | __func__, dongle_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | } |
| 1153 | |
| 1154 | /* IRCFG1: IRSL1 and 2 are set to IrDA mode */ |
| 1155 | outb(0x00, iobase+4); |
| 1156 | |
| 1157 | /* Restore bank register */ |
| 1158 | outb(bank, iobase+BSR); |
| 1159 | |
| 1160 | } /* set_up_dongle_interface */ |
| 1161 | |
| 1162 | /* |
| 1163 | * Function nsc_ircc_change_dongle_speed (iobase, speed, dongle_id) |
| 1164 | * |
| 1165 | * Change speed of the attach dongle |
| 1166 | * |
| 1167 | */ |
| 1168 | static void nsc_ircc_change_dongle_speed(int iobase, int speed, int dongle_id) |
| 1169 | { |
| 1170 | __u8 bank; |
| 1171 | |
| 1172 | /* Save current bank */ |
| 1173 | bank = inb(iobase+BSR); |
| 1174 | |
| 1175 | /* Select Bank 7 */ |
| 1176 | switch_bank(iobase, BANK7); |
| 1177 | |
| 1178 | /* IRCFG1: set according to dongle_id */ |
| 1179 | switch (dongle_id) { |
| 1180 | case 0x00: /* same as */ |
| 1181 | case 0x01: /* Differential serial interface */ |
| 1182 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1183 | __func__, dongle_types[dongle_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | break; |
| 1185 | case 0x02: /* same as */ |
| 1186 | case 0x03: /* Reserved */ |
| 1187 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1188 | __func__, dongle_types[dongle_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | break; |
| 1190 | case 0x04: /* Sharp RY5HD01 */ |
| 1191 | break; |
| 1192 | case 0x05: /* Reserved */ |
| 1193 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1194 | __func__, dongle_types[dongle_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1195 | break; |
| 1196 | case 0x06: /* Single-ended serial interface */ |
| 1197 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1198 | __func__, dongle_types[dongle_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | break; |
| 1200 | case 0x07: /* Consumer-IR only */ |
| 1201 | IRDA_DEBUG(0, "%s(), %s is not for IrDA mode\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1202 | __func__, dongle_types[dongle_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | break; |
| 1204 | case 0x08: /* HP HSDL-2300, HP HSDL-3600/HSDL-3610 */ |
| 1205 | IRDA_DEBUG(0, "%s(), %s\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1206 | __func__, dongle_types[dongle_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1207 | outb(0x00, iobase+4); |
| 1208 | if (speed > 115200) |
| 1209 | outb(0x01, iobase+4); |
| 1210 | break; |
| 1211 | case 0x09: /* IBM31T1100 or Temic TFDS6000/TFDS6500 */ |
| 1212 | outb(0x01, iobase+4); |
| 1213 | |
| 1214 | if (speed == 4000000) { |
| 1215 | /* There was a cli() there, but we now are already |
| 1216 | * under spin_lock_irqsave() - JeanII */ |
| 1217 | outb(0x81, iobase+4); |
| 1218 | outb(0x80, iobase+4); |
| 1219 | } else |
| 1220 | outb(0x00, iobase+4); |
| 1221 | break; |
| 1222 | case 0x0A: /* same as */ |
| 1223 | case 0x0B: /* Reserved */ |
| 1224 | IRDA_DEBUG(0, "%s(), %s not defined by irda yet\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1225 | __func__, dongle_types[dongle_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1226 | break; |
| 1227 | case 0x0C: /* same as */ |
| 1228 | case 0x0D: /* HP HSDL-1100/HSDL-2100 */ |
| 1229 | break; |
| 1230 | case 0x0E: /* Supports SIR Mode only */ |
| 1231 | break; |
| 1232 | case 0x0F: /* No dongle connected */ |
| 1233 | IRDA_DEBUG(0, "%s(), %s is not for IrDA mode\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1234 | __func__, dongle_types[dongle_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | |
| 1236 | switch_bank(iobase, BANK0); |
| 1237 | outb(0x62, iobase+MCR); |
| 1238 | break; |
| 1239 | default: |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1240 | IRDA_DEBUG(0, "%s(), invalid data_rate\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1241 | } |
| 1242 | /* Restore bank register */ |
| 1243 | outb(bank, iobase+BSR); |
| 1244 | } |
| 1245 | |
| 1246 | /* |
| 1247 | * Function nsc_ircc_change_speed (self, baud) |
| 1248 | * |
| 1249 | * Change the speed of the device |
| 1250 | * |
| 1251 | * This function *must* be called with irq off and spin-lock. |
| 1252 | */ |
| 1253 | static __u8 nsc_ircc_change_speed(struct nsc_ircc_cb *self, __u32 speed) |
| 1254 | { |
| 1255 | struct net_device *dev = self->netdev; |
| 1256 | __u8 mcr = MCR_SIR; |
| 1257 | int iobase; |
| 1258 | __u8 bank; |
| 1259 | __u8 ier; /* Interrupt enable register */ |
| 1260 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1261 | IRDA_DEBUG(2, "%s(), speed=%d\n", __func__, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1262 | |
| 1263 | IRDA_ASSERT(self != NULL, return 0;); |
| 1264 | |
| 1265 | iobase = self->io.fir_base; |
| 1266 | |
| 1267 | /* Update accounting for new speed */ |
| 1268 | self->io.speed = speed; |
| 1269 | |
| 1270 | /* Save current bank */ |
| 1271 | bank = inb(iobase+BSR); |
| 1272 | |
| 1273 | /* Disable interrupts */ |
| 1274 | switch_bank(iobase, BANK0); |
| 1275 | outb(0, iobase+IER); |
| 1276 | |
| 1277 | /* Select Bank 2 */ |
| 1278 | switch_bank(iobase, BANK2); |
| 1279 | |
| 1280 | outb(0x00, iobase+BGDH); |
| 1281 | switch (speed) { |
| 1282 | case 9600: outb(0x0c, iobase+BGDL); break; |
| 1283 | case 19200: outb(0x06, iobase+BGDL); break; |
| 1284 | case 38400: outb(0x03, iobase+BGDL); break; |
| 1285 | case 57600: outb(0x02, iobase+BGDL); break; |
| 1286 | case 115200: outb(0x01, iobase+BGDL); break; |
| 1287 | case 576000: |
| 1288 | switch_bank(iobase, BANK5); |
| 1289 | |
| 1290 | /* IRCR2: MDRS is set */ |
| 1291 | outb(inb(iobase+4) | 0x04, iobase+4); |
| 1292 | |
| 1293 | mcr = MCR_MIR; |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1294 | IRDA_DEBUG(0, "%s(), handling baud of 576000\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | break; |
| 1296 | case 1152000: |
| 1297 | mcr = MCR_MIR; |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1298 | IRDA_DEBUG(0, "%s(), handling baud of 1152000\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1299 | break; |
| 1300 | case 4000000: |
| 1301 | mcr = MCR_FIR; |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1302 | IRDA_DEBUG(0, "%s(), handling baud of 4000000\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1303 | break; |
| 1304 | default: |
| 1305 | mcr = MCR_FIR; |
| 1306 | IRDA_DEBUG(0, "%s(), unknown baud rate of %d\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1307 | __func__, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1308 | break; |
| 1309 | } |
| 1310 | |
| 1311 | /* Set appropriate speed mode */ |
| 1312 | switch_bank(iobase, BANK0); |
| 1313 | outb(mcr | MCR_TX_DFR, iobase+MCR); |
| 1314 | |
| 1315 | /* Give some hits to the transceiver */ |
| 1316 | nsc_ircc_change_dongle_speed(iobase, speed, self->io.dongle_id); |
| 1317 | |
| 1318 | /* Set FIFO threshold to TX17, RX16 */ |
| 1319 | switch_bank(iobase, BANK0); |
| 1320 | outb(0x00, iobase+FCR); |
| 1321 | outb(FCR_FIFO_EN, iobase+FCR); |
| 1322 | outb(FCR_RXTH| /* Set Rx FIFO threshold */ |
| 1323 | FCR_TXTH| /* Set Tx FIFO threshold */ |
| 1324 | FCR_TXSR| /* Reset Tx FIFO */ |
| 1325 | FCR_RXSR| /* Reset Rx FIFO */ |
| 1326 | FCR_FIFO_EN, /* Enable FIFOs */ |
| 1327 | iobase+FCR); |
| 1328 | |
| 1329 | /* Set FIFO size to 32 */ |
| 1330 | switch_bank(iobase, BANK2); |
| 1331 | outb(EXCR2_RFSIZ|EXCR2_TFSIZ, iobase+EXCR2); |
| 1332 | |
| 1333 | /* Enable some interrupts so we can receive frames */ |
| 1334 | switch_bank(iobase, BANK0); |
| 1335 | if (speed > 115200) { |
| 1336 | /* Install FIR xmit handler */ |
Stephen Hemminger | c279b8c | 2009-03-20 19:35:39 +0000 | [diff] [blame] | 1337 | dev->netdev_ops = &nsc_ircc_fir_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1338 | ier = IER_SFIF_IE; |
| 1339 | nsc_ircc_dma_receive(self); |
| 1340 | } else { |
| 1341 | /* Install SIR xmit handler */ |
Stephen Hemminger | c279b8c | 2009-03-20 19:35:39 +0000 | [diff] [blame] | 1342 | dev->netdev_ops = &nsc_ircc_sir_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | ier = IER_RXHDL_IE; |
| 1344 | } |
| 1345 | /* Set our current interrupt mask */ |
| 1346 | outb(ier, iobase+IER); |
| 1347 | |
| 1348 | /* Restore BSR */ |
| 1349 | outb(bank, iobase+BSR); |
| 1350 | |
| 1351 | /* Make sure interrupt handlers keep the proper interrupt mask */ |
Eric Dumazet | 807540b | 2010-09-23 05:40:09 +0000 | [diff] [blame] | 1352 | return ier; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1353 | } |
| 1354 | |
| 1355 | /* |
| 1356 | * Function nsc_ircc_hard_xmit (skb, dev) |
| 1357 | * |
| 1358 | * Transmit the frame! |
| 1359 | * |
| 1360 | */ |
Stephen Hemminger | 6518bbb | 2009-08-31 19:50:50 +0000 | [diff] [blame] | 1361 | static netdev_tx_t nsc_ircc_hard_xmit_sir(struct sk_buff *skb, |
| 1362 | struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | { |
| 1364 | struct nsc_ircc_cb *self; |
| 1365 | unsigned long flags; |
| 1366 | int iobase; |
| 1367 | __s32 speed; |
| 1368 | __u8 bank; |
| 1369 | |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1370 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | |
Patrick McHardy | ec634fe | 2009-07-05 19:23:38 -0700 | [diff] [blame] | 1372 | IRDA_ASSERT(self != NULL, return NETDEV_TX_OK;); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | |
| 1374 | iobase = self->io.fir_base; |
| 1375 | |
| 1376 | netif_stop_queue(dev); |
| 1377 | |
| 1378 | /* Make sure tests *& speed change are atomic */ |
| 1379 | spin_lock_irqsave(&self->lock, flags); |
| 1380 | |
| 1381 | /* Check if we need to change the speed */ |
| 1382 | speed = irda_get_next_speed(skb); |
| 1383 | if ((speed != self->io.speed) && (speed != -1)) { |
| 1384 | /* Check for empty frame. */ |
| 1385 | if (!skb->len) { |
| 1386 | /* If we just sent a frame, we get called before |
| 1387 | * the last bytes get out (because of the SIR FIFO). |
| 1388 | * If this is the case, let interrupt handler change |
| 1389 | * the speed itself... Jean II */ |
| 1390 | if (self->io.direction == IO_RECV) { |
| 1391 | nsc_ircc_change_speed(self, speed); |
| 1392 | /* TODO : For SIR->SIR, the next packet |
| 1393 | * may get corrupted - Jean II */ |
| 1394 | netif_wake_queue(dev); |
| 1395 | } else { |
| 1396 | self->new_speed = speed; |
| 1397 | /* Queue will be restarted after speed change |
| 1398 | * to make sure packets gets through the |
| 1399 | * proper xmit handler - Jean II */ |
| 1400 | } |
| 1401 | dev->trans_start = jiffies; |
| 1402 | spin_unlock_irqrestore(&self->lock, flags); |
| 1403 | dev_kfree_skb(skb); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1404 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | } else |
| 1406 | self->new_speed = speed; |
| 1407 | } |
| 1408 | |
| 1409 | /* Save current bank */ |
| 1410 | bank = inb(iobase+BSR); |
| 1411 | |
| 1412 | self->tx_buff.data = self->tx_buff.head; |
| 1413 | |
| 1414 | self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data, |
| 1415 | self->tx_buff.truesize); |
| 1416 | |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1417 | dev->stats.tx_bytes += self->tx_buff.len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | |
| 1419 | /* Add interrupt on tx low level (will fire immediately) */ |
| 1420 | switch_bank(iobase, BANK0); |
| 1421 | outb(IER_TXLDL_IE, iobase+IER); |
| 1422 | |
| 1423 | /* Restore bank register */ |
| 1424 | outb(bank, iobase+BSR); |
| 1425 | |
| 1426 | dev->trans_start = jiffies; |
| 1427 | spin_unlock_irqrestore(&self->lock, flags); |
| 1428 | |
| 1429 | dev_kfree_skb(skb); |
| 1430 | |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1431 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1432 | } |
| 1433 | |
Stephen Hemminger | 6518bbb | 2009-08-31 19:50:50 +0000 | [diff] [blame] | 1434 | static netdev_tx_t nsc_ircc_hard_xmit_fir(struct sk_buff *skb, |
| 1435 | struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1436 | { |
| 1437 | struct nsc_ircc_cb *self; |
| 1438 | unsigned long flags; |
| 1439 | int iobase; |
| 1440 | __s32 speed; |
| 1441 | __u8 bank; |
| 1442 | int mtt, diff; |
| 1443 | |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1444 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1445 | iobase = self->io.fir_base; |
| 1446 | |
| 1447 | netif_stop_queue(dev); |
| 1448 | |
| 1449 | /* Make sure tests *& speed change are atomic */ |
| 1450 | spin_lock_irqsave(&self->lock, flags); |
| 1451 | |
| 1452 | /* Check if we need to change the speed */ |
| 1453 | speed = irda_get_next_speed(skb); |
| 1454 | if ((speed != self->io.speed) && (speed != -1)) { |
| 1455 | /* Check for empty frame. */ |
| 1456 | if (!skb->len) { |
| 1457 | /* If we are currently transmitting, defer to |
| 1458 | * interrupt handler. - Jean II */ |
| 1459 | if(self->tx_fifo.len == 0) { |
| 1460 | nsc_ircc_change_speed(self, speed); |
| 1461 | netif_wake_queue(dev); |
| 1462 | } else { |
| 1463 | self->new_speed = speed; |
| 1464 | /* Keep queue stopped : |
| 1465 | * the speed change operation may change the |
| 1466 | * xmit handler, and we want to make sure |
| 1467 | * the next packet get through the proper |
| 1468 | * Tx path, so block the Tx queue until |
| 1469 | * the speed change has been done. |
| 1470 | * Jean II */ |
| 1471 | } |
| 1472 | dev->trans_start = jiffies; |
| 1473 | spin_unlock_irqrestore(&self->lock, flags); |
| 1474 | dev_kfree_skb(skb); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1475 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1476 | } else { |
| 1477 | /* Change speed after current frame */ |
| 1478 | self->new_speed = speed; |
| 1479 | } |
| 1480 | } |
| 1481 | |
| 1482 | /* Save current bank */ |
| 1483 | bank = inb(iobase+BSR); |
| 1484 | |
| 1485 | /* Register and copy this frame to DMA memory */ |
| 1486 | self->tx_fifo.queue[self->tx_fifo.free].start = self->tx_fifo.tail; |
| 1487 | self->tx_fifo.queue[self->tx_fifo.free].len = skb->len; |
| 1488 | self->tx_fifo.tail += skb->len; |
| 1489 | |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1490 | dev->stats.tx_bytes += skb->len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1491 | |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 1492 | skb_copy_from_linear_data(skb, self->tx_fifo.queue[self->tx_fifo.free].start, |
| 1493 | skb->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1494 | self->tx_fifo.len++; |
| 1495 | self->tx_fifo.free++; |
| 1496 | |
| 1497 | /* Start transmit only if there is currently no transmit going on */ |
| 1498 | if (self->tx_fifo.len == 1) { |
| 1499 | /* Check if we must wait the min turn time or not */ |
| 1500 | mtt = irda_get_mtt(skb); |
| 1501 | if (mtt) { |
| 1502 | /* Check how much time we have used already */ |
| 1503 | do_gettimeofday(&self->now); |
| 1504 | diff = self->now.tv_usec - self->stamp.tv_usec; |
| 1505 | if (diff < 0) |
| 1506 | diff += 1000000; |
| 1507 | |
| 1508 | /* Check if the mtt is larger than the time we have |
| 1509 | * already used by all the protocol processing |
| 1510 | */ |
| 1511 | if (mtt > diff) { |
| 1512 | mtt -= diff; |
| 1513 | |
| 1514 | /* |
| 1515 | * Use timer if delay larger than 125 us, and |
| 1516 | * use udelay for smaller values which should |
| 1517 | * be acceptable |
| 1518 | */ |
| 1519 | if (mtt > 125) { |
| 1520 | /* Adjust for timer resolution */ |
| 1521 | mtt = mtt / 125; |
| 1522 | |
| 1523 | /* Setup timer */ |
| 1524 | switch_bank(iobase, BANK4); |
| 1525 | outb(mtt & 0xff, iobase+TMRL); |
| 1526 | outb((mtt >> 8) & 0x0f, iobase+TMRH); |
| 1527 | |
| 1528 | /* Start timer */ |
| 1529 | outb(IRCR1_TMR_EN, iobase+IRCR1); |
| 1530 | self->io.direction = IO_XMIT; |
| 1531 | |
| 1532 | /* Enable timer interrupt */ |
| 1533 | switch_bank(iobase, BANK0); |
| 1534 | outb(IER_TMR_IE, iobase+IER); |
| 1535 | |
| 1536 | /* Timer will take care of the rest */ |
| 1537 | goto out; |
| 1538 | } else |
| 1539 | udelay(mtt); |
| 1540 | } |
| 1541 | } |
| 1542 | /* Enable DMA interrupt */ |
| 1543 | switch_bank(iobase, BANK0); |
| 1544 | outb(IER_DMA_IE, iobase+IER); |
| 1545 | |
| 1546 | /* Transmit frame */ |
| 1547 | nsc_ircc_dma_xmit(self, iobase); |
| 1548 | } |
| 1549 | out: |
| 1550 | /* Not busy transmitting anymore if window is not full, |
| 1551 | * and if we don't need to change speed */ |
| 1552 | if ((self->tx_fifo.free < MAX_TX_WINDOW) && (self->new_speed == 0)) |
| 1553 | netif_wake_queue(self->netdev); |
| 1554 | |
| 1555 | /* Restore bank register */ |
| 1556 | outb(bank, iobase+BSR); |
| 1557 | |
| 1558 | dev->trans_start = jiffies; |
| 1559 | spin_unlock_irqrestore(&self->lock, flags); |
| 1560 | dev_kfree_skb(skb); |
| 1561 | |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1562 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1563 | } |
| 1564 | |
| 1565 | /* |
| 1566 | * Function nsc_ircc_dma_xmit (self, iobase) |
| 1567 | * |
| 1568 | * Transmit data using DMA |
| 1569 | * |
| 1570 | */ |
| 1571 | static void nsc_ircc_dma_xmit(struct nsc_ircc_cb *self, int iobase) |
| 1572 | { |
| 1573 | int bsr; |
| 1574 | |
| 1575 | /* Save current bank */ |
| 1576 | bsr = inb(iobase+BSR); |
| 1577 | |
| 1578 | /* Disable DMA */ |
| 1579 | switch_bank(iobase, BANK0); |
| 1580 | outb(inb(iobase+MCR) & ~MCR_DMA_EN, iobase+MCR); |
| 1581 | |
| 1582 | self->io.direction = IO_XMIT; |
| 1583 | |
| 1584 | /* Choose transmit DMA channel */ |
| 1585 | switch_bank(iobase, BANK2); |
| 1586 | outb(ECR1_DMASWP|ECR1_DMANF|ECR1_EXT_SL, iobase+ECR1); |
| 1587 | |
| 1588 | irda_setup_dma(self->io.dma, |
| 1589 | ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start - |
| 1590 | self->tx_buff.head) + self->tx_buff_dma, |
| 1591 | self->tx_fifo.queue[self->tx_fifo.ptr].len, |
| 1592 | DMA_TX_MODE); |
| 1593 | |
| 1594 | /* Enable DMA and SIR interaction pulse */ |
| 1595 | switch_bank(iobase, BANK0); |
| 1596 | outb(inb(iobase+MCR)|MCR_TX_DFR|MCR_DMA_EN|MCR_IR_PLS, iobase+MCR); |
| 1597 | |
| 1598 | /* Restore bank register */ |
| 1599 | outb(bsr, iobase+BSR); |
| 1600 | } |
| 1601 | |
| 1602 | /* |
| 1603 | * Function nsc_ircc_pio_xmit (self, iobase) |
| 1604 | * |
| 1605 | * Transmit data using PIO. Returns the number of bytes that actually |
| 1606 | * got transferred |
| 1607 | * |
| 1608 | */ |
| 1609 | static int nsc_ircc_pio_write(int iobase, __u8 *buf, int len, int fifo_size) |
| 1610 | { |
| 1611 | int actual = 0; |
| 1612 | __u8 bank; |
| 1613 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1614 | IRDA_DEBUG(4, "%s()\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1615 | |
| 1616 | /* Save current bank */ |
| 1617 | bank = inb(iobase+BSR); |
| 1618 | |
| 1619 | switch_bank(iobase, BANK0); |
| 1620 | if (!(inb_p(iobase+LSR) & LSR_TXEMP)) { |
| 1621 | IRDA_DEBUG(4, "%s(), warning, FIFO not empty yet!\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1622 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1623 | |
| 1624 | /* FIFO may still be filled to the Tx interrupt threshold */ |
| 1625 | fifo_size -= 17; |
| 1626 | } |
| 1627 | |
| 1628 | /* Fill FIFO with current frame */ |
| 1629 | while ((fifo_size-- > 0) && (actual < len)) { |
| 1630 | /* Transmit next byte */ |
| 1631 | outb(buf[actual++], iobase+TXD); |
| 1632 | } |
| 1633 | |
| 1634 | IRDA_DEBUG(4, "%s(), fifo_size %d ; %d sent of %d\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1635 | __func__, fifo_size, actual, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1636 | |
| 1637 | /* Restore bank */ |
| 1638 | outb(bank, iobase+BSR); |
| 1639 | |
| 1640 | return actual; |
| 1641 | } |
| 1642 | |
| 1643 | /* |
| 1644 | * Function nsc_ircc_dma_xmit_complete (self) |
| 1645 | * |
| 1646 | * The transfer of a frame in finished. This function will only be called |
| 1647 | * by the interrupt handler |
| 1648 | * |
| 1649 | */ |
| 1650 | static int nsc_ircc_dma_xmit_complete(struct nsc_ircc_cb *self) |
| 1651 | { |
| 1652 | int iobase; |
| 1653 | __u8 bank; |
| 1654 | int ret = TRUE; |
| 1655 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1656 | IRDA_DEBUG(2, "%s()\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1657 | |
| 1658 | iobase = self->io.fir_base; |
| 1659 | |
| 1660 | /* Save current bank */ |
| 1661 | bank = inb(iobase+BSR); |
| 1662 | |
| 1663 | /* Disable DMA */ |
| 1664 | switch_bank(iobase, BANK0); |
| 1665 | outb(inb(iobase+MCR) & ~MCR_DMA_EN, iobase+MCR); |
| 1666 | |
Justin P. Mattock | 42b2aa8 | 2011-11-28 20:31:00 -0800 | [diff] [blame] | 1667 | /* Check for underrun! */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1668 | if (inb(iobase+ASCR) & ASCR_TXUR) { |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1669 | self->netdev->stats.tx_errors++; |
| 1670 | self->netdev->stats.tx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1671 | |
| 1672 | /* Clear bit, by writing 1 into it */ |
| 1673 | outb(ASCR_TXUR, iobase+ASCR); |
| 1674 | } else { |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1675 | self->netdev->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1676 | } |
| 1677 | |
| 1678 | /* Finished with this frame, so prepare for next */ |
| 1679 | self->tx_fifo.ptr++; |
| 1680 | self->tx_fifo.len--; |
| 1681 | |
| 1682 | /* Any frames to be sent back-to-back? */ |
| 1683 | if (self->tx_fifo.len) { |
| 1684 | nsc_ircc_dma_xmit(self, iobase); |
| 1685 | |
| 1686 | /* Not finished yet! */ |
| 1687 | ret = FALSE; |
| 1688 | } else { |
| 1689 | /* Reset Tx FIFO info */ |
| 1690 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; |
| 1691 | self->tx_fifo.tail = self->tx_buff.head; |
| 1692 | } |
| 1693 | |
| 1694 | /* Make sure we have room for more frames and |
| 1695 | * that we don't need to change speed */ |
| 1696 | if ((self->tx_fifo.free < MAX_TX_WINDOW) && (self->new_speed == 0)) { |
| 1697 | /* Not busy transmitting anymore */ |
| 1698 | /* Tell the network layer, that we can accept more frames */ |
| 1699 | netif_wake_queue(self->netdev); |
| 1700 | } |
| 1701 | |
| 1702 | /* Restore bank */ |
| 1703 | outb(bank, iobase+BSR); |
| 1704 | |
| 1705 | return ret; |
| 1706 | } |
| 1707 | |
| 1708 | /* |
| 1709 | * Function nsc_ircc_dma_receive (self) |
| 1710 | * |
| 1711 | * Get ready for receiving a frame. The device will initiate a DMA |
| 1712 | * if it starts to receive a frame. |
| 1713 | * |
| 1714 | */ |
| 1715 | static int nsc_ircc_dma_receive(struct nsc_ircc_cb *self) |
| 1716 | { |
| 1717 | int iobase; |
| 1718 | __u8 bsr; |
| 1719 | |
| 1720 | iobase = self->io.fir_base; |
| 1721 | |
| 1722 | /* Reset Tx FIFO info */ |
| 1723 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; |
| 1724 | self->tx_fifo.tail = self->tx_buff.head; |
| 1725 | |
| 1726 | /* Save current bank */ |
| 1727 | bsr = inb(iobase+BSR); |
| 1728 | |
| 1729 | /* Disable DMA */ |
| 1730 | switch_bank(iobase, BANK0); |
| 1731 | outb(inb(iobase+MCR) & ~MCR_DMA_EN, iobase+MCR); |
| 1732 | |
| 1733 | /* Choose DMA Rx, DMA Fairness, and Advanced mode */ |
| 1734 | switch_bank(iobase, BANK2); |
| 1735 | outb(ECR1_DMANF|ECR1_EXT_SL, iobase+ECR1); |
| 1736 | |
| 1737 | self->io.direction = IO_RECV; |
| 1738 | self->rx_buff.data = self->rx_buff.head; |
| 1739 | |
| 1740 | /* Reset Rx FIFO. This will also flush the ST_FIFO */ |
| 1741 | switch_bank(iobase, BANK0); |
| 1742 | outb(FCR_RXSR|FCR_FIFO_EN, iobase+FCR); |
| 1743 | |
| 1744 | self->st_fifo.len = self->st_fifo.pending_bytes = 0; |
| 1745 | self->st_fifo.tail = self->st_fifo.head = 0; |
| 1746 | |
| 1747 | irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize, |
| 1748 | DMA_RX_MODE); |
| 1749 | |
| 1750 | /* Enable DMA */ |
| 1751 | switch_bank(iobase, BANK0); |
| 1752 | outb(inb(iobase+MCR)|MCR_DMA_EN, iobase+MCR); |
| 1753 | |
| 1754 | /* Restore bank register */ |
| 1755 | outb(bsr, iobase+BSR); |
| 1756 | |
| 1757 | return 0; |
| 1758 | } |
| 1759 | |
| 1760 | /* |
| 1761 | * Function nsc_ircc_dma_receive_complete (self) |
| 1762 | * |
| 1763 | * Finished with receiving frames |
| 1764 | * |
| 1765 | * |
| 1766 | */ |
| 1767 | static int nsc_ircc_dma_receive_complete(struct nsc_ircc_cb *self, int iobase) |
| 1768 | { |
| 1769 | struct st_fifo *st_fifo; |
| 1770 | struct sk_buff *skb; |
| 1771 | __u8 status; |
| 1772 | __u8 bank; |
| 1773 | int len; |
| 1774 | |
| 1775 | st_fifo = &self->st_fifo; |
| 1776 | |
| 1777 | /* Save current bank */ |
| 1778 | bank = inb(iobase+BSR); |
| 1779 | |
| 1780 | /* Read all entries in status FIFO */ |
| 1781 | switch_bank(iobase, BANK5); |
| 1782 | while ((status = inb(iobase+FRM_ST)) & FRM_ST_VLD) { |
| 1783 | /* We must empty the status FIFO no matter what */ |
| 1784 | len = inb(iobase+RFLFL) | ((inb(iobase+RFLFH) & 0x1f) << 8); |
| 1785 | |
| 1786 | if (st_fifo->tail >= MAX_RX_WINDOW) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1787 | IRDA_DEBUG(0, "%s(), window is full!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1788 | continue; |
| 1789 | } |
| 1790 | |
| 1791 | st_fifo->entries[st_fifo->tail].status = status; |
| 1792 | st_fifo->entries[st_fifo->tail].len = len; |
| 1793 | st_fifo->pending_bytes += len; |
| 1794 | st_fifo->tail++; |
| 1795 | st_fifo->len++; |
| 1796 | } |
| 1797 | /* Try to process all entries in status FIFO */ |
| 1798 | while (st_fifo->len > 0) { |
| 1799 | /* Get first entry */ |
| 1800 | status = st_fifo->entries[st_fifo->head].status; |
| 1801 | len = st_fifo->entries[st_fifo->head].len; |
| 1802 | st_fifo->pending_bytes -= len; |
| 1803 | st_fifo->head++; |
| 1804 | st_fifo->len--; |
| 1805 | |
| 1806 | /* Check for errors */ |
| 1807 | if (status & FRM_ST_ERR_MSK) { |
| 1808 | if (status & FRM_ST_LOST_FR) { |
| 1809 | /* Add number of lost frames to stats */ |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1810 | self->netdev->stats.rx_errors += len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1811 | } else { |
| 1812 | /* Skip frame */ |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1813 | self->netdev->stats.rx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1814 | |
| 1815 | self->rx_buff.data += len; |
| 1816 | |
| 1817 | if (status & FRM_ST_MAX_LEN) |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1818 | self->netdev->stats.rx_length_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1819 | |
| 1820 | if (status & FRM_ST_PHY_ERR) |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1821 | self->netdev->stats.rx_frame_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1822 | |
| 1823 | if (status & FRM_ST_BAD_CRC) |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1824 | self->netdev->stats.rx_crc_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1825 | } |
| 1826 | /* The errors below can be reported in both cases */ |
| 1827 | if (status & FRM_ST_OVR1) |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1828 | self->netdev->stats.rx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1829 | |
| 1830 | if (status & FRM_ST_OVR2) |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1831 | self->netdev->stats.rx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1832 | } else { |
| 1833 | /* |
| 1834 | * First we must make sure that the frame we |
| 1835 | * want to deliver is all in main memory. If we |
| 1836 | * cannot tell, then we check if the Rx FIFO is |
| 1837 | * empty. If not then we will have to take a nap |
| 1838 | * and try again later. |
| 1839 | */ |
| 1840 | if (st_fifo->pending_bytes < self->io.fifo_size) { |
| 1841 | switch_bank(iobase, BANK0); |
| 1842 | if (inb(iobase+LSR) & LSR_RXDA) { |
| 1843 | /* Put this entry back in fifo */ |
| 1844 | st_fifo->head--; |
| 1845 | st_fifo->len++; |
| 1846 | st_fifo->pending_bytes += len; |
| 1847 | st_fifo->entries[st_fifo->head].status = status; |
| 1848 | st_fifo->entries[st_fifo->head].len = len; |
| 1849 | /* |
| 1850 | * DMA not finished yet, so try again |
| 1851 | * later, set timer value, resolution |
| 1852 | * 125 us |
| 1853 | */ |
| 1854 | switch_bank(iobase, BANK4); |
| 1855 | outb(0x02, iobase+TMRL); /* x 125 us */ |
| 1856 | outb(0x00, iobase+TMRH); |
| 1857 | |
| 1858 | /* Start timer */ |
| 1859 | outb(IRCR1_TMR_EN, iobase+IRCR1); |
| 1860 | |
| 1861 | /* Restore bank register */ |
| 1862 | outb(bank, iobase+BSR); |
| 1863 | |
| 1864 | return FALSE; /* I'll be back! */ |
| 1865 | } |
| 1866 | } |
| 1867 | |
| 1868 | /* |
| 1869 | * Remember the time we received this frame, so we can |
| 1870 | * reduce the min turn time a bit since we will know |
| 1871 | * how much time we have used for protocol processing |
| 1872 | */ |
| 1873 | do_gettimeofday(&self->stamp); |
| 1874 | |
| 1875 | skb = dev_alloc_skb(len+1); |
| 1876 | if (skb == NULL) { |
| 1877 | IRDA_WARNING("%s(), memory squeeze, " |
| 1878 | "dropping frame.\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1879 | __func__); |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1880 | self->netdev->stats.rx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | |
| 1882 | /* Restore bank register */ |
| 1883 | outb(bank, iobase+BSR); |
| 1884 | |
| 1885 | return FALSE; |
| 1886 | } |
| 1887 | |
| 1888 | /* Make sure IP header gets aligned */ |
| 1889 | skb_reserve(skb, 1); |
| 1890 | |
| 1891 | /* Copy frame without CRC */ |
| 1892 | if (self->io.speed < 4000000) { |
| 1893 | skb_put(skb, len-2); |
Arnaldo Carvalho de Melo | 27d7ff4 | 2007-03-31 11:55:19 -0300 | [diff] [blame] | 1894 | skb_copy_to_linear_data(skb, |
| 1895 | self->rx_buff.data, |
| 1896 | len - 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1897 | } else { |
| 1898 | skb_put(skb, len-4); |
Arnaldo Carvalho de Melo | 27d7ff4 | 2007-03-31 11:55:19 -0300 | [diff] [blame] | 1899 | skb_copy_to_linear_data(skb, |
| 1900 | self->rx_buff.data, |
| 1901 | len - 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1902 | } |
| 1903 | |
| 1904 | /* Move to next frame */ |
| 1905 | self->rx_buff.data += len; |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1906 | self->netdev->stats.rx_bytes += len; |
| 1907 | self->netdev->stats.rx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1908 | |
| 1909 | skb->dev = self->netdev; |
Arnaldo Carvalho de Melo | 459a98e | 2007-03-19 15:30:44 -0700 | [diff] [blame] | 1910 | skb_reset_mac_header(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1911 | skb->protocol = htons(ETH_P_IRDA); |
| 1912 | netif_rx(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1913 | } |
| 1914 | } |
| 1915 | /* Restore bank register */ |
| 1916 | outb(bank, iobase+BSR); |
| 1917 | |
| 1918 | return TRUE; |
| 1919 | } |
| 1920 | |
| 1921 | /* |
| 1922 | * Function nsc_ircc_pio_receive (self) |
| 1923 | * |
| 1924 | * Receive all data in receiver FIFO |
| 1925 | * |
| 1926 | */ |
| 1927 | static void nsc_ircc_pio_receive(struct nsc_ircc_cb *self) |
| 1928 | { |
| 1929 | __u8 byte; |
| 1930 | int iobase; |
| 1931 | |
| 1932 | iobase = self->io.fir_base; |
| 1933 | |
| 1934 | /* Receive all characters in Rx FIFO */ |
| 1935 | do { |
| 1936 | byte = inb(iobase+RXD); |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1937 | async_unwrap_char(self->netdev, &self->netdev->stats, |
| 1938 | &self->rx_buff, byte); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1939 | } while (inb(iobase+LSR) & LSR_RXDA); /* Data available */ |
| 1940 | } |
| 1941 | |
| 1942 | /* |
| 1943 | * Function nsc_ircc_sir_interrupt (self, eir) |
| 1944 | * |
| 1945 | * Handle SIR interrupt |
| 1946 | * |
| 1947 | */ |
| 1948 | static void nsc_ircc_sir_interrupt(struct nsc_ircc_cb *self, int eir) |
| 1949 | { |
| 1950 | int actual; |
| 1951 | |
| 1952 | /* Check if transmit FIFO is low on data */ |
| 1953 | if (eir & EIR_TXLDL_EV) { |
| 1954 | /* Write data left in transmit buffer */ |
| 1955 | actual = nsc_ircc_pio_write(self->io.fir_base, |
| 1956 | self->tx_buff.data, |
| 1957 | self->tx_buff.len, |
| 1958 | self->io.fifo_size); |
| 1959 | self->tx_buff.data += actual; |
| 1960 | self->tx_buff.len -= actual; |
| 1961 | |
| 1962 | self->io.direction = IO_XMIT; |
| 1963 | |
| 1964 | /* Check if finished */ |
| 1965 | if (self->tx_buff.len > 0) |
| 1966 | self->ier = IER_TXLDL_IE; |
| 1967 | else { |
| 1968 | |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1969 | self->netdev->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1970 | netif_wake_queue(self->netdev); |
| 1971 | self->ier = IER_TXEMP_IE; |
| 1972 | } |
| 1973 | |
| 1974 | } |
| 1975 | /* Check if transmission has completed */ |
| 1976 | if (eir & EIR_TXEMP_EV) { |
| 1977 | /* Turn around and get ready to receive some data */ |
| 1978 | self->io.direction = IO_RECV; |
| 1979 | self->ier = IER_RXHDL_IE; |
| 1980 | /* Check if we need to change the speed? |
| 1981 | * Need to be after self->io.direction to avoid race with |
| 1982 | * nsc_ircc_hard_xmit_sir() - Jean II */ |
| 1983 | if (self->new_speed) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1984 | IRDA_DEBUG(2, "%s(), Changing speed!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1985 | self->ier = nsc_ircc_change_speed(self, |
| 1986 | self->new_speed); |
| 1987 | self->new_speed = 0; |
| 1988 | netif_wake_queue(self->netdev); |
| 1989 | |
| 1990 | /* Check if we are going to FIR */ |
| 1991 | if (self->io.speed > 115200) { |
| 1992 | /* No need to do anymore SIR stuff */ |
| 1993 | return; |
| 1994 | } |
| 1995 | } |
| 1996 | } |
| 1997 | |
| 1998 | /* Rx FIFO threshold or timeout */ |
| 1999 | if (eir & EIR_RXHDL_EV) { |
| 2000 | nsc_ircc_pio_receive(self); |
| 2001 | |
| 2002 | /* Keep receiving */ |
| 2003 | self->ier = IER_RXHDL_IE; |
| 2004 | } |
| 2005 | } |
| 2006 | |
| 2007 | /* |
| 2008 | * Function nsc_ircc_fir_interrupt (self, eir) |
| 2009 | * |
| 2010 | * Handle MIR/FIR interrupt |
| 2011 | * |
| 2012 | */ |
| 2013 | static void nsc_ircc_fir_interrupt(struct nsc_ircc_cb *self, int iobase, |
| 2014 | int eir) |
| 2015 | { |
| 2016 | __u8 bank; |
| 2017 | |
| 2018 | bank = inb(iobase+BSR); |
| 2019 | |
| 2020 | /* Status FIFO event*/ |
| 2021 | if (eir & EIR_SFIF_EV) { |
| 2022 | /* Check if DMA has finished */ |
| 2023 | if (nsc_ircc_dma_receive_complete(self, iobase)) { |
| 2024 | /* Wait for next status FIFO interrupt */ |
| 2025 | self->ier = IER_SFIF_IE; |
| 2026 | } else { |
| 2027 | self->ier = IER_SFIF_IE | IER_TMR_IE; |
| 2028 | } |
| 2029 | } else if (eir & EIR_TMR_EV) { /* Timer finished */ |
| 2030 | /* Disable timer */ |
| 2031 | switch_bank(iobase, BANK4); |
| 2032 | outb(0, iobase+IRCR1); |
| 2033 | |
| 2034 | /* Clear timer event */ |
| 2035 | switch_bank(iobase, BANK0); |
| 2036 | outb(ASCR_CTE, iobase+ASCR); |
| 2037 | |
| 2038 | /* Check if this is a Tx timer interrupt */ |
| 2039 | if (self->io.direction == IO_XMIT) { |
| 2040 | nsc_ircc_dma_xmit(self, iobase); |
| 2041 | |
| 2042 | /* Interrupt on DMA */ |
| 2043 | self->ier = IER_DMA_IE; |
| 2044 | } else { |
| 2045 | /* Check (again) if DMA has finished */ |
| 2046 | if (nsc_ircc_dma_receive_complete(self, iobase)) { |
| 2047 | self->ier = IER_SFIF_IE; |
| 2048 | } else { |
| 2049 | self->ier = IER_SFIF_IE | IER_TMR_IE; |
| 2050 | } |
| 2051 | } |
| 2052 | } else if (eir & EIR_DMA_EV) { |
| 2053 | /* Finished with all transmissions? */ |
| 2054 | if (nsc_ircc_dma_xmit_complete(self)) { |
| 2055 | if(self->new_speed != 0) { |
| 2056 | /* As we stop the Tx queue, the speed change |
| 2057 | * need to be done when the Tx fifo is |
| 2058 | * empty. Ask for a Tx done interrupt */ |
| 2059 | self->ier = IER_TXEMP_IE; |
| 2060 | } else { |
| 2061 | /* Check if there are more frames to be |
| 2062 | * transmitted */ |
| 2063 | if (irda_device_txqueue_empty(self->netdev)) { |
| 2064 | /* Prepare for receive */ |
| 2065 | nsc_ircc_dma_receive(self); |
| 2066 | self->ier = IER_SFIF_IE; |
| 2067 | } else |
| 2068 | IRDA_WARNING("%s(), potential " |
| 2069 | "Tx queue lockup !\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2070 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2071 | } |
| 2072 | } else { |
| 2073 | /* Not finished yet, so interrupt on DMA again */ |
| 2074 | self->ier = IER_DMA_IE; |
| 2075 | } |
| 2076 | } else if (eir & EIR_TXEMP_EV) { |
| 2077 | /* The Tx FIFO has totally drained out, so now we can change |
| 2078 | * the speed... - Jean II */ |
| 2079 | self->ier = nsc_ircc_change_speed(self, self->new_speed); |
| 2080 | self->new_speed = 0; |
| 2081 | netif_wake_queue(self->netdev); |
| 2082 | /* Note : nsc_ircc_change_speed() restarted Rx fifo */ |
| 2083 | } |
| 2084 | |
| 2085 | outb(bank, iobase+BSR); |
| 2086 | } |
| 2087 | |
| 2088 | /* |
| 2089 | * Function nsc_ircc_interrupt (irq, dev_id, regs) |
| 2090 | * |
| 2091 | * An interrupt from the chip has arrived. Time to do some work |
| 2092 | * |
| 2093 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 2094 | static irqreturn_t nsc_ircc_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2095 | { |
Jeff Garzik | c31f28e | 2006-10-06 14:56:04 -0400 | [diff] [blame] | 2096 | struct net_device *dev = dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2097 | struct nsc_ircc_cb *self; |
| 2098 | __u8 bsr, eir; |
| 2099 | int iobase; |
| 2100 | |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 2101 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2102 | |
| 2103 | spin_lock(&self->lock); |
| 2104 | |
| 2105 | iobase = self->io.fir_base; |
| 2106 | |
| 2107 | bsr = inb(iobase+BSR); /* Save current bank */ |
| 2108 | |
| 2109 | switch_bank(iobase, BANK0); |
| 2110 | self->ier = inb(iobase+IER); |
| 2111 | eir = inb(iobase+EIR) & self->ier; /* Mask out the interesting ones */ |
| 2112 | |
| 2113 | outb(0, iobase+IER); /* Disable interrupts */ |
| 2114 | |
| 2115 | if (eir) { |
| 2116 | /* Dispatch interrupt handler for the current speed */ |
| 2117 | if (self->io.speed > 115200) |
| 2118 | nsc_ircc_fir_interrupt(self, iobase, eir); |
| 2119 | else |
| 2120 | nsc_ircc_sir_interrupt(self, eir); |
| 2121 | } |
| 2122 | |
| 2123 | outb(self->ier, iobase+IER); /* Restore interrupts */ |
| 2124 | outb(bsr, iobase+BSR); /* Restore bank register */ |
| 2125 | |
| 2126 | spin_unlock(&self->lock); |
| 2127 | return IRQ_RETVAL(eir); |
| 2128 | } |
| 2129 | |
| 2130 | /* |
| 2131 | * Function nsc_ircc_is_receiving (self) |
| 2132 | * |
| 2133 | * Return TRUE is we are currently receiving a frame |
| 2134 | * |
| 2135 | */ |
| 2136 | static int nsc_ircc_is_receiving(struct nsc_ircc_cb *self) |
| 2137 | { |
| 2138 | unsigned long flags; |
| 2139 | int status = FALSE; |
| 2140 | int iobase; |
| 2141 | __u8 bank; |
| 2142 | |
| 2143 | IRDA_ASSERT(self != NULL, return FALSE;); |
| 2144 | |
| 2145 | spin_lock_irqsave(&self->lock, flags); |
| 2146 | |
| 2147 | if (self->io.speed > 115200) { |
| 2148 | iobase = self->io.fir_base; |
| 2149 | |
| 2150 | /* Check if rx FIFO is not empty */ |
| 2151 | bank = inb(iobase+BSR); |
| 2152 | switch_bank(iobase, BANK2); |
| 2153 | if ((inb(iobase+RXFLV) & 0x3f) != 0) { |
| 2154 | /* We are receiving something */ |
| 2155 | status = TRUE; |
| 2156 | } |
| 2157 | outb(bank, iobase+BSR); |
| 2158 | } else |
| 2159 | status = (self->rx_buff.state != OUTSIDE_FRAME); |
| 2160 | |
| 2161 | spin_unlock_irqrestore(&self->lock, flags); |
| 2162 | |
| 2163 | return status; |
| 2164 | } |
| 2165 | |
| 2166 | /* |
| 2167 | * Function nsc_ircc_net_open (dev) |
| 2168 | * |
| 2169 | * Start the device |
| 2170 | * |
| 2171 | */ |
| 2172 | static int nsc_ircc_net_open(struct net_device *dev) |
| 2173 | { |
| 2174 | struct nsc_ircc_cb *self; |
| 2175 | int iobase; |
| 2176 | char hwname[32]; |
| 2177 | __u8 bank; |
| 2178 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2179 | IRDA_DEBUG(4, "%s()\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2180 | |
| 2181 | IRDA_ASSERT(dev != NULL, return -1;); |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 2182 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2183 | |
| 2184 | IRDA_ASSERT(self != NULL, return 0;); |
| 2185 | |
| 2186 | iobase = self->io.fir_base; |
| 2187 | |
| 2188 | if (request_irq(self->io.irq, nsc_ircc_interrupt, 0, dev->name, dev)) { |
| 2189 | IRDA_WARNING("%s, unable to allocate irq=%d\n", |
| 2190 | driver_name, self->io.irq); |
| 2191 | return -EAGAIN; |
| 2192 | } |
| 2193 | /* |
| 2194 | * Always allocate the DMA channel after the IRQ, and clean up on |
| 2195 | * failure. |
| 2196 | */ |
| 2197 | if (request_dma(self->io.dma, dev->name)) { |
| 2198 | IRDA_WARNING("%s, unable to allocate dma=%d\n", |
| 2199 | driver_name, self->io.dma); |
| 2200 | free_irq(self->io.irq, dev); |
| 2201 | return -EAGAIN; |
| 2202 | } |
| 2203 | |
| 2204 | /* Save current bank */ |
| 2205 | bank = inb(iobase+BSR); |
| 2206 | |
| 2207 | /* turn on interrupts */ |
| 2208 | switch_bank(iobase, BANK0); |
| 2209 | outb(IER_LS_IE | IER_RXHDL_IE, iobase+IER); |
| 2210 | |
| 2211 | /* Restore bank register */ |
| 2212 | outb(bank, iobase+BSR); |
| 2213 | |
| 2214 | /* Ready to play! */ |
| 2215 | netif_start_queue(dev); |
| 2216 | |
| 2217 | /* Give self a hardware name */ |
| 2218 | sprintf(hwname, "NSC-FIR @ 0x%03x", self->io.fir_base); |
| 2219 | |
| 2220 | /* |
| 2221 | * Open new IrLAP layer instance, now that everything should be |
| 2222 | * initialized properly |
| 2223 | */ |
| 2224 | self->irlap = irlap_open(dev, &self->qos, hwname); |
| 2225 | |
| 2226 | return 0; |
| 2227 | } |
| 2228 | |
| 2229 | /* |
| 2230 | * Function nsc_ircc_net_close (dev) |
| 2231 | * |
| 2232 | * Stop the device |
| 2233 | * |
| 2234 | */ |
| 2235 | static int nsc_ircc_net_close(struct net_device *dev) |
| 2236 | { |
| 2237 | struct nsc_ircc_cb *self; |
| 2238 | int iobase; |
| 2239 | __u8 bank; |
| 2240 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2241 | IRDA_DEBUG(4, "%s()\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2242 | |
| 2243 | IRDA_ASSERT(dev != NULL, return -1;); |
| 2244 | |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 2245 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2246 | IRDA_ASSERT(self != NULL, return 0;); |
| 2247 | |
| 2248 | /* Stop device */ |
| 2249 | netif_stop_queue(dev); |
| 2250 | |
| 2251 | /* Stop and remove instance of IrLAP */ |
| 2252 | if (self->irlap) |
| 2253 | irlap_close(self->irlap); |
| 2254 | self->irlap = NULL; |
| 2255 | |
| 2256 | iobase = self->io.fir_base; |
| 2257 | |
| 2258 | disable_dma(self->io.dma); |
| 2259 | |
| 2260 | /* Save current bank */ |
| 2261 | bank = inb(iobase+BSR); |
| 2262 | |
| 2263 | /* Disable interrupts */ |
| 2264 | switch_bank(iobase, BANK0); |
| 2265 | outb(0, iobase+IER); |
| 2266 | |
| 2267 | free_irq(self->io.irq, dev); |
| 2268 | free_dma(self->io.dma); |
| 2269 | |
| 2270 | /* Restore bank register */ |
| 2271 | outb(bank, iobase+BSR); |
| 2272 | |
| 2273 | return 0; |
| 2274 | } |
| 2275 | |
| 2276 | /* |
| 2277 | * Function nsc_ircc_net_ioctl (dev, rq, cmd) |
| 2278 | * |
| 2279 | * Process IOCTL commands for this device |
| 2280 | * |
| 2281 | */ |
| 2282 | static int nsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 2283 | { |
| 2284 | struct if_irda_req *irq = (struct if_irda_req *) rq; |
| 2285 | struct nsc_ircc_cb *self; |
| 2286 | unsigned long flags; |
| 2287 | int ret = 0; |
| 2288 | |
| 2289 | IRDA_ASSERT(dev != NULL, return -1;); |
| 2290 | |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 2291 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | |
| 2293 | IRDA_ASSERT(self != NULL, return -1;); |
| 2294 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2295 | IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __func__, dev->name, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2296 | |
| 2297 | switch (cmd) { |
| 2298 | case SIOCSBANDWIDTH: /* Set bandwidth */ |
| 2299 | if (!capable(CAP_NET_ADMIN)) { |
| 2300 | ret = -EPERM; |
| 2301 | break; |
| 2302 | } |
| 2303 | spin_lock_irqsave(&self->lock, flags); |
| 2304 | nsc_ircc_change_speed(self, irq->ifr_baudrate); |
| 2305 | spin_unlock_irqrestore(&self->lock, flags); |
| 2306 | break; |
| 2307 | case SIOCSMEDIABUSY: /* Set media busy */ |
| 2308 | if (!capable(CAP_NET_ADMIN)) { |
| 2309 | ret = -EPERM; |
| 2310 | break; |
| 2311 | } |
| 2312 | irda_device_set_media_busy(self->netdev, TRUE); |
| 2313 | break; |
| 2314 | case SIOCGRECEIVING: /* Check if we are receiving right now */ |
| 2315 | /* This is already protected */ |
| 2316 | irq->ifr_receiving = nsc_ircc_is_receiving(self); |
| 2317 | break; |
| 2318 | default: |
| 2319 | ret = -EOPNOTSUPP; |
| 2320 | } |
| 2321 | return ret; |
| 2322 | } |
| 2323 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 2324 | static int nsc_ircc_suspend(struct platform_device *dev, pm_message_t state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2325 | { |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 2326 | struct nsc_ircc_cb *self = platform_get_drvdata(dev); |
| 2327 | int bank; |
| 2328 | unsigned long flags; |
| 2329 | int iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2330 | |
| 2331 | if (self->io.suspended) |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 2332 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2333 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 2334 | IRDA_DEBUG(1, "%s, Suspending\n", driver_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2335 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 2336 | rtnl_lock(); |
| 2337 | if (netif_running(self->netdev)) { |
| 2338 | netif_device_detach(self->netdev); |
| 2339 | spin_lock_irqsave(&self->lock, flags); |
| 2340 | /* Save current bank */ |
| 2341 | bank = inb(iobase+BSR); |
| 2342 | |
| 2343 | /* Disable interrupts */ |
| 2344 | switch_bank(iobase, BANK0); |
| 2345 | outb(0, iobase+IER); |
| 2346 | |
| 2347 | /* Restore bank register */ |
| 2348 | outb(bank, iobase+BSR); |
| 2349 | |
| 2350 | spin_unlock_irqrestore(&self->lock, flags); |
| 2351 | free_irq(self->io.irq, self->netdev); |
| 2352 | disable_dma(self->io.dma); |
| 2353 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2354 | self->io.suspended = 1; |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 2355 | rtnl_unlock(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2356 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2357 | return 0; |
| 2358 | } |
| 2359 | |
Dmitry Torokhov | 3b99b93 | 2006-03-20 18:59:05 -0800 | [diff] [blame] | 2360 | static int nsc_ircc_resume(struct platform_device *dev) |
| 2361 | { |
| 2362 | struct nsc_ircc_cb *self = platform_get_drvdata(dev); |
| 2363 | unsigned long flags; |
| 2364 | |
| 2365 | if (!self->io.suspended) |
| 2366 | return 0; |
| 2367 | |
| 2368 | IRDA_DEBUG(1, "%s, Waking up\n", driver_name); |
| 2369 | |
| 2370 | rtnl_lock(); |
| 2371 | nsc_ircc_setup(&self->io); |
| 2372 | nsc_ircc_init_dongle_interface(self->io.fir_base, self->io.dongle_id); |
| 2373 | |
| 2374 | if (netif_running(self->netdev)) { |
| 2375 | if (request_irq(self->io.irq, nsc_ircc_interrupt, 0, |
| 2376 | self->netdev->name, self->netdev)) { |
| 2377 | IRDA_WARNING("%s, unable to allocate irq=%d\n", |
| 2378 | driver_name, self->io.irq); |
| 2379 | |
| 2380 | /* |
| 2381 | * Don't fail resume process, just kill this |
| 2382 | * network interface |
| 2383 | */ |
| 2384 | unregister_netdevice(self->netdev); |
| 2385 | } else { |
| 2386 | spin_lock_irqsave(&self->lock, flags); |
| 2387 | nsc_ircc_change_speed(self, self->io.speed); |
| 2388 | spin_unlock_irqrestore(&self->lock, flags); |
| 2389 | netif_device_attach(self->netdev); |
| 2390 | } |
| 2391 | |
| 2392 | } else { |
| 2393 | spin_lock_irqsave(&self->lock, flags); |
| 2394 | nsc_ircc_change_speed(self, 9600); |
| 2395 | spin_unlock_irqrestore(&self->lock, flags); |
| 2396 | } |
| 2397 | self->io.suspended = 0; |
| 2398 | rtnl_unlock(); |
| 2399 | |
| 2400 | return 0; |
| 2401 | } |
| 2402 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2403 | MODULE_AUTHOR("Dag Brattli <dagb@cs.uit.no>"); |
| 2404 | MODULE_DESCRIPTION("NSC IrDA Device Driver"); |
| 2405 | MODULE_LICENSE("GPL"); |
| 2406 | |
| 2407 | |
| 2408 | module_param(qos_mtt_bits, int, 0); |
| 2409 | MODULE_PARM_DESC(qos_mtt_bits, "Minimum Turn Time"); |
| 2410 | module_param_array(io, int, NULL, 0); |
| 2411 | MODULE_PARM_DESC(io, "Base I/O addresses"); |
| 2412 | module_param_array(irq, int, NULL, 0); |
| 2413 | MODULE_PARM_DESC(irq, "IRQ lines"); |
| 2414 | module_param_array(dma, int, NULL, 0); |
| 2415 | MODULE_PARM_DESC(dma, "DMA channels"); |
| 2416 | module_param(dongle_id, int, 0); |
| 2417 | MODULE_PARM_DESC(dongle_id, "Type-id of used dongle"); |
| 2418 | |
| 2419 | module_init(nsc_ircc_init); |
| 2420 | module_exit(nsc_ircc_cleanup); |
| 2421 | |