Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /********************************************************************* |
| 2 | * |
| 3 | * Filename: ali-ircc.h |
| 4 | * Version: 0.5 |
| 5 | * Description: Driver for the ALI M1535D and M1543C FIR Controller |
| 6 | * Status: Experimental. |
| 7 | * Author: Benjamin Kong <benjamin_kong@ali.com.tw> |
| 8 | * Created at: 2000/10/16 03:46PM |
| 9 | * Modified at: 2001/1/3 02:55PM |
| 10 | * Modified by: Benjamin Kong <benjamin_kong@ali.com.tw> |
| 11 | * Modified at: 2003/11/6 and support for ALi south-bridge chipsets M1563 |
| 12 | * Modified by: Clear Zhang <clear_zhang@ali.com.tw> |
| 13 | * |
| 14 | * Copyright (c) 2000 Benjamin Kong <benjamin_kong@ali.com.tw> |
| 15 | * All Rights Reserved |
| 16 | * |
| 17 | * This program is free software; you can redistribute it and/or |
| 18 | * modify it under the terms of the GNU General Public License as |
| 19 | * published by the Free Software Foundation; either version 2 of |
| 20 | * the License, or (at your option) any later version. |
| 21 | * |
| 22 | ********************************************************************/ |
| 23 | |
| 24 | #include <linux/module.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 25 | #include <linux/gfp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | |
| 27 | #include <linux/kernel.h> |
| 28 | #include <linux/types.h> |
| 29 | #include <linux/skbuff.h> |
| 30 | #include <linux/netdevice.h> |
| 31 | #include <linux/ioport.h> |
| 32 | #include <linux/delay.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <linux/init.h> |
Alexey Dobriyan | a6b7a40 | 2011-06-06 10:43:46 +0000 | [diff] [blame] | 34 | #include <linux/interrupt.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <linux/rtnetlink.h> |
| 36 | #include <linux/serial_reg.h> |
| 37 | #include <linux/dma-mapping.h> |
Samuel Ortiz | 898b1d1 | 2006-05-25 16:21:10 -0700 | [diff] [blame] | 38 | #include <linux/platform_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | |
| 40 | #include <asm/io.h> |
| 41 | #include <asm/dma.h> |
| 42 | #include <asm/byteorder.h> |
| 43 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <net/irda/wrapper.h> |
| 45 | #include <net/irda/irda.h> |
| 46 | #include <net/irda/irda_device.h> |
| 47 | |
| 48 | #include "ali-ircc.h" |
| 49 | |
| 50 | #define CHIP_IO_EXTENT 8 |
| 51 | #define BROKEN_DONGLE_ID |
| 52 | |
Samuel Ortiz | 898b1d1 | 2006-05-25 16:21:10 -0700 | [diff] [blame] | 53 | #define ALI_IRCC_DRIVER_NAME "ali-ircc" |
| 54 | |
| 55 | /* Power Management */ |
| 56 | static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state); |
| 57 | static int ali_ircc_resume(struct platform_device *dev); |
| 58 | |
| 59 | static struct platform_driver ali_ircc_driver = { |
| 60 | .suspend = ali_ircc_suspend, |
| 61 | .resume = ali_ircc_resume, |
| 62 | .driver = { |
| 63 | .name = ALI_IRCC_DRIVER_NAME, |
Kay Sievers | 72abb46 | 2008-04-18 13:50:44 -0700 | [diff] [blame] | 64 | .owner = THIS_MODULE, |
Samuel Ortiz | 898b1d1 | 2006-05-25 16:21:10 -0700 | [diff] [blame] | 65 | }, |
| 66 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | |
| 68 | /* Module parameters */ |
| 69 | static int qos_mtt_bits = 0x07; /* 1 ms or more */ |
| 70 | |
| 71 | /* Use BIOS settions by default, but user may supply module parameters */ |
| 72 | static unsigned int io[] = { ~0, ~0, ~0, ~0 }; |
| 73 | static unsigned int irq[] = { 0, 0, 0, 0 }; |
| 74 | static unsigned int dma[] = { 0, 0, 0, 0 }; |
| 75 | |
| 76 | static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info); |
| 77 | static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info); |
| 78 | static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info); |
| 79 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 80 | /* These are the currently known ALi south-bridge chipsets, the only one difference |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | * is that M1543C doesn't support HP HDSL-3600 |
| 82 | */ |
| 83 | static ali_chip_t chips[] = |
| 84 | { |
| 85 | { "M1543", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x43, ali_ircc_probe_53, ali_ircc_init_43 }, |
| 86 | { "M1535", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x53, ali_ircc_probe_53, ali_ircc_init_53 }, |
| 87 | { "M1563", { 0x3f0, 0x370 }, 0x51, 0x23, 0x20, 0x63, ali_ircc_probe_53, ali_ircc_init_53 }, |
| 88 | { NULL } |
| 89 | }; |
| 90 | |
| 91 | /* Max 4 instances for now */ |
| 92 | static struct ali_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL }; |
| 93 | |
| 94 | /* Dongle Types */ |
| 95 | static char *dongle_types[] = { |
| 96 | "TFDS6000", |
| 97 | "HP HSDL-3600", |
| 98 | "HP HSDL-1100", |
| 99 | "No dongle connected", |
| 100 | }; |
| 101 | |
| 102 | /* Some prototypes */ |
| 103 | static int ali_ircc_open(int i, chipio_t *info); |
| 104 | |
| 105 | static int ali_ircc_close(struct ali_ircc_cb *self); |
| 106 | |
| 107 | static int ali_ircc_setup(chipio_t *info); |
| 108 | static int ali_ircc_is_receiving(struct ali_ircc_cb *self); |
| 109 | static int ali_ircc_net_open(struct net_device *dev); |
| 110 | static int ali_ircc_net_close(struct net_device *dev); |
| 111 | static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | |
| 114 | /* SIR function */ |
Stephen Hemminger | 6518bbb | 2009-08-31 19:50:50 +0000 | [diff] [blame] | 115 | static netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb, |
| 116 | struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self); |
| 118 | static void ali_ircc_sir_receive(struct ali_ircc_cb *self); |
| 119 | static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self); |
| 120 | static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len); |
| 121 | static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed); |
| 122 | |
| 123 | /* FIR function */ |
Stephen Hemminger | 6518bbb | 2009-08-31 19:50:50 +0000 | [diff] [blame] | 124 | static netdev_tx_t ali_ircc_fir_hard_xmit(struct sk_buff *skb, |
| 125 | struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 speed); |
| 127 | static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self); |
| 128 | static int ali_ircc_dma_receive(struct ali_ircc_cb *self); |
| 129 | static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self); |
| 130 | static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self); |
| 131 | static void ali_ircc_dma_xmit(struct ali_ircc_cb *self); |
| 132 | |
| 133 | /* My Function */ |
| 134 | static int ali_ircc_read_dongle_id (int i, chipio_t *info); |
| 135 | static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed); |
| 136 | |
| 137 | /* ALi chip function */ |
| 138 | static void SIR2FIR(int iobase); |
| 139 | static void FIR2SIR(int iobase); |
| 140 | static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable); |
| 141 | |
| 142 | /* |
| 143 | * Function ali_ircc_init () |
| 144 | * |
| 145 | * Initialize chip. Find out whay kinds of chips we are dealing with |
Thomas Weber | 0b1974d | 2010-09-23 11:46:48 +0200 | [diff] [blame] | 146 | * and their configuration registers address |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | */ |
| 148 | static int __init ali_ircc_init(void) |
| 149 | { |
| 150 | ali_chip_t *chip; |
| 151 | chipio_t info; |
Adrian Bunk | 9c6c679 | 2006-07-08 13:33:28 -0700 | [diff] [blame] | 152 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | int cfg, cfg_base; |
| 154 | int reg, revision; |
| 155 | int i = 0; |
| 156 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 157 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); |
Samuel Ortiz | 898b1d1 | 2006-05-25 16:21:10 -0700 | [diff] [blame] | 158 | |
| 159 | ret = platform_driver_register(&ali_ircc_driver); |
| 160 | if (ret) { |
| 161 | IRDA_ERROR("%s, Can't register driver!\n", |
| 162 | ALI_IRCC_DRIVER_NAME); |
| 163 | return ret; |
| 164 | } |
| 165 | |
Adrian Bunk | 9c6c679 | 2006-07-08 13:33:28 -0700 | [diff] [blame] | 166 | ret = -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | |
| 168 | /* Probe for all the ALi chipsets we know about */ |
| 169 | for (chip= chips; chip->name; chip++, i++) |
| 170 | { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 171 | IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __func__, chip->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | |
| 173 | /* Try all config registers for this chip */ |
| 174 | for (cfg=0; cfg<2; cfg++) |
| 175 | { |
| 176 | cfg_base = chip->cfg[cfg]; |
| 177 | if (!cfg_base) |
| 178 | continue; |
| 179 | |
| 180 | memset(&info, 0, sizeof(chipio_t)); |
| 181 | info.cfg_base = cfg_base; |
| 182 | info.fir_base = io[i]; |
| 183 | info.dma = dma[i]; |
| 184 | info.irq = irq[i]; |
| 185 | |
| 186 | |
| 187 | /* Enter Configuration */ |
| 188 | outb(chip->entr1, cfg_base); |
| 189 | outb(chip->entr2, cfg_base); |
| 190 | |
| 191 | /* Select Logical Device 5 Registers (UART2) */ |
| 192 | outb(0x07, cfg_base); |
| 193 | outb(0x05, cfg_base+1); |
| 194 | |
| 195 | /* Read Chip Identification Register */ |
| 196 | outb(chip->cid_index, cfg_base); |
| 197 | reg = inb(cfg_base+1); |
| 198 | |
| 199 | if (reg == chip->cid_value) |
| 200 | { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 201 | IRDA_DEBUG(2, "%s(), Chip found at 0x%03x\n", __func__, cfg_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | |
| 203 | outb(0x1F, cfg_base); |
| 204 | revision = inb(cfg_base+1); |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 205 | IRDA_DEBUG(2, "%s(), Found %s chip, revision=%d\n", __func__, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | chip->name, revision); |
| 207 | |
| 208 | /* |
| 209 | * If the user supplies the base address, then |
| 210 | * we init the chip, if not we probe the values |
| 211 | * set by the BIOS |
| 212 | */ |
| 213 | if (io[i] < 2000) |
| 214 | { |
| 215 | chip->init(chip, &info); |
| 216 | } |
| 217 | else |
| 218 | { |
| 219 | chip->probe(chip, &info); |
| 220 | } |
| 221 | |
| 222 | if (ali_ircc_open(i, &info) == 0) |
| 223 | ret = 0; |
| 224 | i++; |
| 225 | } |
| 226 | else |
| 227 | { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 228 | IRDA_DEBUG(2, "%s(), No %s chip at 0x%03x\n", __func__, chip->name, cfg_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | } |
| 230 | /* Exit configuration */ |
| 231 | outb(0xbb, cfg_base); |
| 232 | } |
| 233 | } |
| 234 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 235 | IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__); |
Samuel Ortiz | 898b1d1 | 2006-05-25 16:21:10 -0700 | [diff] [blame] | 236 | |
| 237 | if (ret) |
| 238 | platform_driver_unregister(&ali_ircc_driver); |
| 239 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | return ret; |
| 241 | } |
| 242 | |
| 243 | /* |
| 244 | * Function ali_ircc_cleanup () |
| 245 | * |
| 246 | * Close all configured chips |
| 247 | * |
| 248 | */ |
| 249 | static void __exit ali_ircc_cleanup(void) |
| 250 | { |
| 251 | int i; |
| 252 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 253 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | |
Bjorn Helgaas | 9c3bd68 | 2006-08-15 00:05:38 -0700 | [diff] [blame] | 255 | for (i=0; i < ARRAY_SIZE(dev_self); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | if (dev_self[i]) |
| 257 | ali_ircc_close(dev_self[i]); |
| 258 | } |
| 259 | |
Samuel Ortiz | 898b1d1 | 2006-05-25 16:21:10 -0700 | [diff] [blame] | 260 | platform_driver_unregister(&ali_ircc_driver); |
| 261 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 262 | IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | } |
| 264 | |
Stephen Hemminger | 2d44a22 | 2009-03-20 19:35:40 +0000 | [diff] [blame] | 265 | static const struct net_device_ops ali_ircc_sir_ops = { |
| 266 | .ndo_open = ali_ircc_net_open, |
| 267 | .ndo_stop = ali_ircc_net_close, |
| 268 | .ndo_start_xmit = ali_ircc_sir_hard_xmit, |
| 269 | .ndo_do_ioctl = ali_ircc_net_ioctl, |
| 270 | }; |
| 271 | |
| 272 | static const struct net_device_ops ali_ircc_fir_ops = { |
| 273 | .ndo_open = ali_ircc_net_open, |
| 274 | .ndo_stop = ali_ircc_net_close, |
| 275 | .ndo_start_xmit = ali_ircc_fir_hard_xmit, |
| 276 | .ndo_do_ioctl = ali_ircc_net_ioctl, |
| 277 | }; |
| 278 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | /* |
| 280 | * Function ali_ircc_open (int i, chipio_t *inf) |
| 281 | * |
| 282 | * Open driver instance |
| 283 | * |
| 284 | */ |
| 285 | static int ali_ircc_open(int i, chipio_t *info) |
| 286 | { |
| 287 | struct net_device *dev; |
| 288 | struct ali_ircc_cb *self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | int dongle_id; |
| 290 | int err; |
| 291 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 292 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); |
Bjorn Helgaas | 9c3bd68 | 2006-08-15 00:05:38 -0700 | [diff] [blame] | 293 | |
| 294 | if (i >= ARRAY_SIZE(dev_self)) { |
| 295 | IRDA_ERROR("%s(), maximum number of supported chips reached!\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 296 | __func__); |
Bjorn Helgaas | 9c3bd68 | 2006-08-15 00:05:38 -0700 | [diff] [blame] | 297 | return -ENOMEM; |
| 298 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | |
| 300 | /* Set FIR FIFO and DMA Threshold */ |
| 301 | if ((ali_ircc_setup(info)) == -1) |
| 302 | return -1; |
| 303 | |
| 304 | dev = alloc_irdadev(sizeof(*self)); |
| 305 | if (dev == NULL) { |
| 306 | IRDA_ERROR("%s(), can't allocate memory for control block!\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 307 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | return -ENOMEM; |
| 309 | } |
| 310 | |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 311 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | self->netdev = dev; |
| 313 | spin_lock_init(&self->lock); |
| 314 | |
| 315 | /* Need to store self somewhere */ |
| 316 | dev_self[i] = self; |
| 317 | self->index = i; |
| 318 | |
| 319 | /* Initialize IO */ |
| 320 | self->io.cfg_base = info->cfg_base; /* In ali_ircc_probe_53 assign */ |
| 321 | self->io.fir_base = info->fir_base; /* info->sir_base = info->fir_base */ |
| 322 | self->io.sir_base = info->sir_base; /* ALi SIR and FIR use the same address */ |
| 323 | self->io.irq = info->irq; |
| 324 | self->io.fir_ext = CHIP_IO_EXTENT; |
| 325 | self->io.dma = info->dma; |
| 326 | self->io.fifo_size = 16; /* SIR: 16, FIR: 32 Benjamin 2000/11/1 */ |
| 327 | |
| 328 | /* Reserve the ioports that we need */ |
Samuel Ortiz | 898b1d1 | 2006-05-25 16:21:10 -0700 | [diff] [blame] | 329 | if (!request_region(self->io.fir_base, self->io.fir_ext, |
| 330 | ALI_IRCC_DRIVER_NAME)) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 331 | IRDA_WARNING("%s(), can't get iobase of 0x%03x\n", __func__, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | self->io.fir_base); |
| 333 | err = -ENODEV; |
| 334 | goto err_out1; |
| 335 | } |
| 336 | |
| 337 | /* Initialize QoS for this device */ |
| 338 | irda_init_max_qos_capabilies(&self->qos); |
| 339 | |
| 340 | /* The only value we must override it the baudrate */ |
| 341 | self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600| |
| 342 | IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); // benjamin 2000/11/8 05:27PM |
| 343 | |
| 344 | self->qos.min_turn_time.bits = qos_mtt_bits; |
| 345 | |
| 346 | irda_qos_bits_to_value(&self->qos); |
| 347 | |
| 348 | /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */ |
| 349 | self->rx_buff.truesize = 14384; |
| 350 | self->tx_buff.truesize = 14384; |
| 351 | |
| 352 | /* Allocate memory if needed */ |
| 353 | self->rx_buff.head = |
| 354 | dma_alloc_coherent(NULL, self->rx_buff.truesize, |
| 355 | &self->rx_buff_dma, GFP_KERNEL); |
| 356 | if (self->rx_buff.head == NULL) { |
| 357 | err = -ENOMEM; |
| 358 | goto err_out2; |
| 359 | } |
| 360 | memset(self->rx_buff.head, 0, self->rx_buff.truesize); |
| 361 | |
| 362 | self->tx_buff.head = |
| 363 | dma_alloc_coherent(NULL, self->tx_buff.truesize, |
| 364 | &self->tx_buff_dma, GFP_KERNEL); |
| 365 | if (self->tx_buff.head == NULL) { |
| 366 | err = -ENOMEM; |
| 367 | goto err_out3; |
| 368 | } |
| 369 | memset(self->tx_buff.head, 0, self->tx_buff.truesize); |
| 370 | |
| 371 | self->rx_buff.in_frame = FALSE; |
| 372 | self->rx_buff.state = OUTSIDE_FRAME; |
| 373 | self->tx_buff.data = self->tx_buff.head; |
| 374 | self->rx_buff.data = self->rx_buff.head; |
| 375 | |
| 376 | /* Reset Tx queue info */ |
| 377 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; |
| 378 | self->tx_fifo.tail = self->tx_buff.head; |
| 379 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | /* Override the network functions we need to use */ |
Stephen Hemminger | 2d44a22 | 2009-03-20 19:35:40 +0000 | [diff] [blame] | 381 | dev->netdev_ops = &ali_ircc_sir_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | |
| 383 | err = register_netdev(dev); |
| 384 | if (err) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 385 | IRDA_ERROR("%s(), register_netdev() failed!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | goto err_out4; |
| 387 | } |
| 388 | IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name); |
| 389 | |
| 390 | /* Check dongle id */ |
| 391 | dongle_id = ali_ircc_read_dongle_id(i, info); |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 392 | IRDA_MESSAGE("%s(), %s, Found dongle: %s\n", __func__, |
Samuel Ortiz | 898b1d1 | 2006-05-25 16:21:10 -0700 | [diff] [blame] | 393 | ALI_IRCC_DRIVER_NAME, dongle_types[dongle_id]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | |
| 395 | self->io.dongle_id = dongle_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 397 | IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | |
| 399 | return 0; |
| 400 | |
| 401 | err_out4: |
| 402 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 403 | self->tx_buff.head, self->tx_buff_dma); |
| 404 | err_out3: |
| 405 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 406 | self->rx_buff.head, self->rx_buff_dma); |
| 407 | err_out2: |
| 408 | release_region(self->io.fir_base, self->io.fir_ext); |
| 409 | err_out1: |
| 410 | dev_self[i] = NULL; |
| 411 | free_netdev(dev); |
| 412 | return err; |
| 413 | } |
| 414 | |
| 415 | |
| 416 | /* |
| 417 | * Function ali_ircc_close (self) |
| 418 | * |
| 419 | * Close driver instance |
| 420 | * |
| 421 | */ |
| 422 | static int __exit ali_ircc_close(struct ali_ircc_cb *self) |
| 423 | { |
| 424 | int iobase; |
| 425 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 426 | IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | |
| 428 | IRDA_ASSERT(self != NULL, return -1;); |
| 429 | |
| 430 | iobase = self->io.fir_base; |
| 431 | |
| 432 | /* Remove netdevice */ |
| 433 | unregister_netdev(self->netdev); |
| 434 | |
| 435 | /* Release the PORT that this driver is using */ |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 436 | IRDA_DEBUG(4, "%s(), Releasing Region %03x\n", __func__, self->io.fir_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | release_region(self->io.fir_base, self->io.fir_ext); |
| 438 | |
| 439 | if (self->tx_buff.head) |
| 440 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 441 | self->tx_buff.head, self->tx_buff_dma); |
| 442 | |
| 443 | if (self->rx_buff.head) |
| 444 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 445 | self->rx_buff.head, self->rx_buff_dma); |
| 446 | |
| 447 | dev_self[self->index] = NULL; |
| 448 | free_netdev(self->netdev); |
| 449 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 450 | IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | |
| 452 | return 0; |
| 453 | } |
| 454 | |
| 455 | /* |
| 456 | * Function ali_ircc_init_43 (chip, info) |
| 457 | * |
| 458 | * Initialize the ALi M1543 chip. |
| 459 | */ |
| 460 | static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info) |
| 461 | { |
| 462 | /* All controller information like I/O address, DMA channel, IRQ |
| 463 | * are set by BIOS |
| 464 | */ |
| 465 | |
| 466 | return 0; |
| 467 | } |
| 468 | |
| 469 | /* |
| 470 | * Function ali_ircc_init_53 (chip, info) |
| 471 | * |
| 472 | * Initialize the ALi M1535 chip. |
| 473 | */ |
| 474 | static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info) |
| 475 | { |
| 476 | /* All controller information like I/O address, DMA channel, IRQ |
| 477 | * are set by BIOS |
| 478 | */ |
| 479 | |
| 480 | return 0; |
| 481 | } |
| 482 | |
| 483 | /* |
| 484 | * Function ali_ircc_probe_53 (chip, info) |
| 485 | * |
| 486 | * Probes for the ALi M1535D or M1535 |
| 487 | */ |
| 488 | static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info) |
| 489 | { |
| 490 | int cfg_base = info->cfg_base; |
| 491 | int hi, low, reg; |
| 492 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 493 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | |
| 495 | /* Enter Configuration */ |
| 496 | outb(chip->entr1, cfg_base); |
| 497 | outb(chip->entr2, cfg_base); |
| 498 | |
| 499 | /* Select Logical Device 5 Registers (UART2) */ |
| 500 | outb(0x07, cfg_base); |
| 501 | outb(0x05, cfg_base+1); |
| 502 | |
| 503 | /* Read address control register */ |
| 504 | outb(0x60, cfg_base); |
| 505 | hi = inb(cfg_base+1); |
| 506 | outb(0x61, cfg_base); |
| 507 | low = inb(cfg_base+1); |
| 508 | info->fir_base = (hi<<8) + low; |
| 509 | |
| 510 | info->sir_base = info->fir_base; |
| 511 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 512 | IRDA_DEBUG(2, "%s(), probing fir_base=0x%03x\n", __func__, info->fir_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
| 514 | /* Read IRQ control register */ |
| 515 | outb(0x70, cfg_base); |
| 516 | reg = inb(cfg_base+1); |
| 517 | info->irq = reg & 0x0f; |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 518 | IRDA_DEBUG(2, "%s(), probing irq=%d\n", __func__, info->irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | |
| 520 | /* Read DMA channel */ |
| 521 | outb(0x74, cfg_base); |
| 522 | reg = inb(cfg_base+1); |
| 523 | info->dma = reg & 0x07; |
| 524 | |
| 525 | if(info->dma == 0x04) |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 526 | IRDA_WARNING("%s(), No DMA channel assigned !\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | else |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 528 | IRDA_DEBUG(2, "%s(), probing dma=%d\n", __func__, info->dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | |
| 530 | /* Read Enabled Status */ |
| 531 | outb(0x30, cfg_base); |
| 532 | reg = inb(cfg_base+1); |
| 533 | info->enabled = (reg & 0x80) && (reg & 0x01); |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 534 | IRDA_DEBUG(2, "%s(), probing enabled=%d\n", __func__, info->enabled); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | |
| 536 | /* Read Power Status */ |
| 537 | outb(0x22, cfg_base); |
| 538 | reg = inb(cfg_base+1); |
| 539 | info->suspended = (reg & 0x20); |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 540 | IRDA_DEBUG(2, "%s(), probing suspended=%d\n", __func__, info->suspended); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | |
| 542 | /* Exit configuration */ |
| 543 | outb(0xbb, cfg_base); |
| 544 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 545 | IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | |
| 547 | return 0; |
| 548 | } |
| 549 | |
| 550 | /* |
| 551 | * Function ali_ircc_setup (info) |
| 552 | * |
| 553 | * Set FIR FIFO and DMA Threshold |
| 554 | * Returns non-negative on success. |
| 555 | * |
| 556 | */ |
| 557 | static int ali_ircc_setup(chipio_t *info) |
| 558 | { |
| 559 | unsigned char tmp; |
| 560 | int version; |
| 561 | int iobase = info->fir_base; |
| 562 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 563 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | |
| 565 | /* Locking comments : |
| 566 | * Most operations here need to be protected. We are called before |
| 567 | * the device instance is created in ali_ircc_open(), therefore |
| 568 | * nobody can bother us - Jean II */ |
| 569 | |
| 570 | /* Switch to FIR space */ |
| 571 | SIR2FIR(iobase); |
| 572 | |
| 573 | /* Master Reset */ |
| 574 | outb(0x40, iobase+FIR_MCR); // benjamin 2000/11/30 11:45AM |
| 575 | |
| 576 | /* Read FIR ID Version Register */ |
| 577 | switch_bank(iobase, BANK3); |
| 578 | version = inb(iobase+FIR_ID_VR); |
| 579 | |
| 580 | /* Should be 0x00 in the M1535/M1535D */ |
| 581 | if(version != 0x00) |
| 582 | { |
Samuel Ortiz | 898b1d1 | 2006-05-25 16:21:10 -0700 | [diff] [blame] | 583 | IRDA_ERROR("%s, Wrong chip version %02x\n", |
| 584 | ALI_IRCC_DRIVER_NAME, version); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | return -1; |
| 586 | } |
| 587 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | /* Set FIR FIFO Threshold Register */ |
| 589 | switch_bank(iobase, BANK1); |
| 590 | outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR); |
| 591 | |
| 592 | /* Set FIR DMA Threshold Register */ |
| 593 | outb(RX_DMA_Threshold, iobase+FIR_DMA_TR); |
| 594 | |
| 595 | /* CRC enable */ |
| 596 | switch_bank(iobase, BANK2); |
| 597 | outb(inb(iobase+FIR_IRDA_CR) | IRDA_CR_CRC, iobase+FIR_IRDA_CR); |
| 598 | |
| 599 | /* NDIS driver set TX Length here BANK2 Alias 3, Alias4*/ |
| 600 | |
| 601 | /* Switch to Bank 0 */ |
| 602 | switch_bank(iobase, BANK0); |
| 603 | |
| 604 | tmp = inb(iobase+FIR_LCR_B); |
| 605 | tmp &=~0x20; // disable SIP |
| 606 | tmp |= 0x80; // these two steps make RX mode |
| 607 | tmp &= 0xbf; |
| 608 | outb(tmp, iobase+FIR_LCR_B); |
| 609 | |
| 610 | /* Disable Interrupt */ |
| 611 | outb(0x00, iobase+FIR_IER); |
| 612 | |
| 613 | |
| 614 | /* Switch to SIR space */ |
| 615 | FIR2SIR(iobase); |
| 616 | |
Samuel Ortiz | 898b1d1 | 2006-05-25 16:21:10 -0700 | [diff] [blame] | 617 | IRDA_MESSAGE("%s, driver loaded (Benjamin Kong)\n", |
| 618 | ALI_IRCC_DRIVER_NAME); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | |
| 620 | /* Enable receive interrupts */ |
| 621 | // outb(UART_IER_RDI, iobase+UART_IER); //benjamin 2000/11/23 01:25PM |
| 622 | // Turn on the interrupts in ali_ircc_net_open |
| 623 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 624 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | |
| 626 | return 0; |
| 627 | } |
| 628 | |
| 629 | /* |
| 630 | * Function ali_ircc_read_dongle_id (int index, info) |
| 631 | * |
| 632 | * Try to read dongle indentification. This procedure needs to be executed |
| 633 | * once after power-on/reset. It also needs to be used whenever you suspect |
| 634 | * that the user may have plugged/unplugged the IrDA Dongle. |
| 635 | */ |
| 636 | static int ali_ircc_read_dongle_id (int i, chipio_t *info) |
| 637 | { |
| 638 | int dongle_id, reg; |
| 639 | int cfg_base = info->cfg_base; |
| 640 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 641 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | |
| 643 | /* Enter Configuration */ |
| 644 | outb(chips[i].entr1, cfg_base); |
| 645 | outb(chips[i].entr2, cfg_base); |
| 646 | |
| 647 | /* Select Logical Device 5 Registers (UART2) */ |
| 648 | outb(0x07, cfg_base); |
| 649 | outb(0x05, cfg_base+1); |
| 650 | |
| 651 | /* Read Dongle ID */ |
| 652 | outb(0xf0, cfg_base); |
| 653 | reg = inb(cfg_base+1); |
| 654 | dongle_id = ((reg>>6)&0x02) | ((reg>>5)&0x01); |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 655 | IRDA_DEBUG(2, "%s(), probing dongle_id=%d, dongle_types=%s\n", __func__, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | dongle_id, dongle_types[dongle_id]); |
| 657 | |
| 658 | /* Exit configuration */ |
| 659 | outb(0xbb, cfg_base); |
| 660 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 661 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | |
| 663 | return dongle_id; |
| 664 | } |
| 665 | |
| 666 | /* |
| 667 | * Function ali_ircc_interrupt (irq, dev_id, regs) |
| 668 | * |
| 669 | * An interrupt from the chip has arrived. Time to do some work |
| 670 | * |
| 671 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 672 | static irqreturn_t ali_ircc_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | { |
Jeff Garzik | c31f28e | 2006-10-06 14:56:04 -0400 | [diff] [blame] | 674 | struct net_device *dev = dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | struct ali_ircc_cb *self; |
| 676 | int ret; |
| 677 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 678 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 680 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | |
| 682 | spin_lock(&self->lock); |
| 683 | |
| 684 | /* Dispatch interrupt handler for the current speed */ |
| 685 | if (self->io.speed > 115200) |
| 686 | ret = ali_ircc_fir_interrupt(self); |
| 687 | else |
| 688 | ret = ali_ircc_sir_interrupt(self); |
| 689 | |
| 690 | spin_unlock(&self->lock); |
| 691 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 692 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | return ret; |
| 694 | } |
| 695 | /* |
| 696 | * Function ali_ircc_fir_interrupt(irq, struct ali_ircc_cb *self) |
| 697 | * |
| 698 | * Handle MIR/FIR interrupt |
| 699 | * |
| 700 | */ |
| 701 | static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self) |
| 702 | { |
| 703 | __u8 eir, OldMessageCount; |
| 704 | int iobase, tmp; |
| 705 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 706 | IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | |
| 708 | iobase = self->io.fir_base; |
| 709 | |
| 710 | switch_bank(iobase, BANK0); |
| 711 | self->InterruptID = inb(iobase+FIR_IIR); |
| 712 | self->BusStatus = inb(iobase+FIR_BSR); |
| 713 | |
| 714 | OldMessageCount = (self->LineStatus + 1) & 0x07; |
| 715 | self->LineStatus = inb(iobase+FIR_LSR); |
| 716 | //self->ier = inb(iobase+FIR_IER); 2000/12/1 04:32PM |
| 717 | eir = self->InterruptID & self->ier; /* Mask out the interesting ones */ |
| 718 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 719 | IRDA_DEBUG(1, "%s(), self->InterruptID = %x\n", __func__,self->InterruptID); |
| 720 | IRDA_DEBUG(1, "%s(), self->LineStatus = %x\n", __func__,self->LineStatus); |
| 721 | IRDA_DEBUG(1, "%s(), self->ier = %x\n", __func__,self->ier); |
| 722 | IRDA_DEBUG(1, "%s(), eir = %x\n", __func__,eir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | |
| 724 | /* Disable interrupts */ |
| 725 | SetCOMInterrupts(self, FALSE); |
| 726 | |
| 727 | /* Tx or Rx Interrupt */ |
| 728 | |
| 729 | if (eir & IIR_EOM) |
| 730 | { |
| 731 | if (self->io.direction == IO_XMIT) /* TX */ |
| 732 | { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 733 | IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Tx) *******\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | |
| 735 | if(ali_ircc_dma_xmit_complete(self)) |
| 736 | { |
| 737 | if (irda_device_txqueue_empty(self->netdev)) |
| 738 | { |
| 739 | /* Prepare for receive */ |
| 740 | ali_ircc_dma_receive(self); |
| 741 | self->ier = IER_EOM; |
| 742 | } |
| 743 | } |
| 744 | else |
| 745 | { |
| 746 | self->ier = IER_EOM; |
| 747 | } |
| 748 | |
| 749 | } |
| 750 | else /* RX */ |
| 751 | { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 752 | IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Rx) *******\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | |
| 754 | if(OldMessageCount > ((self->LineStatus+1) & 0x07)) |
| 755 | { |
| 756 | self->rcvFramesOverflow = TRUE; |
Frans Pop | 19299b34 | 2010-03-24 07:57:30 +0000 | [diff] [blame] | 757 | IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ********\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | } |
| 759 | |
| 760 | if (ali_ircc_dma_receive_complete(self)) |
| 761 | { |
Frans Pop | 19299b34 | 2010-03-24 07:57:30 +0000 | [diff] [blame] | 762 | IRDA_DEBUG(1, "%s(), ******* receive complete ********\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | |
| 764 | self->ier = IER_EOM; |
| 765 | } |
| 766 | else |
| 767 | { |
Frans Pop | 19299b34 | 2010-03-24 07:57:30 +0000 | [diff] [blame] | 768 | IRDA_DEBUG(1, "%s(), ******* Not receive complete ********\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | |
| 770 | self->ier = IER_EOM | IER_TIMER; |
| 771 | } |
| 772 | |
| 773 | } |
| 774 | } |
| 775 | /* Timer Interrupt */ |
| 776 | else if (eir & IIR_TIMER) |
| 777 | { |
| 778 | if(OldMessageCount > ((self->LineStatus+1) & 0x07)) |
| 779 | { |
| 780 | self->rcvFramesOverflow = TRUE; |
Frans Pop | 19299b34 | 2010-03-24 07:57:30 +0000 | [diff] [blame] | 781 | IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE *******\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | } |
| 783 | /* Disable Timer */ |
| 784 | switch_bank(iobase, BANK1); |
| 785 | tmp = inb(iobase+FIR_CR); |
| 786 | outb( tmp& ~CR_TIMER_EN, iobase+FIR_CR); |
| 787 | |
| 788 | /* Check if this is a Tx timer interrupt */ |
| 789 | if (self->io.direction == IO_XMIT) |
| 790 | { |
| 791 | ali_ircc_dma_xmit(self); |
| 792 | |
| 793 | /* Interrupt on EOM */ |
| 794 | self->ier = IER_EOM; |
| 795 | |
| 796 | } |
| 797 | else /* Rx */ |
| 798 | { |
| 799 | if(ali_ircc_dma_receive_complete(self)) |
| 800 | { |
| 801 | self->ier = IER_EOM; |
| 802 | } |
| 803 | else |
| 804 | { |
| 805 | self->ier = IER_EOM | IER_TIMER; |
| 806 | } |
| 807 | } |
| 808 | } |
| 809 | |
| 810 | /* Restore Interrupt */ |
| 811 | SetCOMInterrupts(self, TRUE); |
| 812 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 813 | IRDA_DEBUG(1, "%s(), ----------------- End ---------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | return IRQ_RETVAL(eir); |
| 815 | } |
| 816 | |
| 817 | /* |
| 818 | * Function ali_ircc_sir_interrupt (irq, self, eir) |
| 819 | * |
| 820 | * Handle SIR interrupt |
| 821 | * |
| 822 | */ |
| 823 | static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self) |
| 824 | { |
| 825 | int iobase; |
| 826 | int iir, lsr; |
| 827 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 828 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | |
| 830 | iobase = self->io.sir_base; |
| 831 | |
| 832 | iir = inb(iobase+UART_IIR) & UART_IIR_ID; |
| 833 | if (iir) { |
| 834 | /* Clear interrupt */ |
| 835 | lsr = inb(iobase+UART_LSR); |
| 836 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 837 | IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", __func__, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | iir, lsr, iobase); |
| 839 | |
| 840 | switch (iir) |
| 841 | { |
| 842 | case UART_IIR_RLSI: |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 843 | IRDA_DEBUG(2, "%s(), RLSI\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | break; |
| 845 | case UART_IIR_RDI: |
| 846 | /* Receive interrupt */ |
| 847 | ali_ircc_sir_receive(self); |
| 848 | break; |
| 849 | case UART_IIR_THRI: |
| 850 | if (lsr & UART_LSR_THRE) |
| 851 | { |
| 852 | /* Transmitter ready for data */ |
| 853 | ali_ircc_sir_write_wakeup(self); |
| 854 | } |
| 855 | break; |
| 856 | default: |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 857 | IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n", __func__, iir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | break; |
| 859 | } |
| 860 | |
| 861 | } |
| 862 | |
| 863 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 864 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | |
| 866 | return IRQ_RETVAL(iir); |
| 867 | } |
| 868 | |
| 869 | |
| 870 | /* |
| 871 | * Function ali_ircc_sir_receive (self) |
| 872 | * |
| 873 | * Receive one frame from the infrared port |
| 874 | * |
| 875 | */ |
| 876 | static void ali_ircc_sir_receive(struct ali_ircc_cb *self) |
| 877 | { |
| 878 | int boguscount = 0; |
| 879 | int iobase; |
| 880 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 881 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | IRDA_ASSERT(self != NULL, return;); |
| 883 | |
| 884 | iobase = self->io.sir_base; |
| 885 | |
| 886 | /* |
| 887 | * Receive all characters in Rx FIFO, unwrap and unstuff them. |
| 888 | * async_unwrap_char will deliver all found frames |
| 889 | */ |
| 890 | do { |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 891 | async_unwrap_char(self->netdev, &self->netdev->stats, &self->rx_buff, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | inb(iobase+UART_RX)); |
| 893 | |
| 894 | /* Make sure we don't stay here too long */ |
| 895 | if (boguscount++ > 32) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 896 | IRDA_DEBUG(2,"%s(), breaking!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | break; |
| 898 | } |
| 899 | } while (inb(iobase+UART_LSR) & UART_LSR_DR); |
| 900 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 901 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | } |
| 903 | |
| 904 | /* |
| 905 | * Function ali_ircc_sir_write_wakeup (tty) |
| 906 | * |
| 907 | * Called by the driver when there's room for more data. If we have |
| 908 | * more packets to send, we send them here. |
| 909 | * |
| 910 | */ |
| 911 | static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self) |
| 912 | { |
| 913 | int actual = 0; |
| 914 | int iobase; |
| 915 | |
| 916 | IRDA_ASSERT(self != NULL, return;); |
| 917 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 918 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | |
| 920 | iobase = self->io.sir_base; |
| 921 | |
| 922 | /* Finished with frame? */ |
| 923 | if (self->tx_buff.len > 0) |
| 924 | { |
| 925 | /* Write data left in transmit buffer */ |
| 926 | actual = ali_ircc_sir_write(iobase, self->io.fifo_size, |
| 927 | self->tx_buff.data, self->tx_buff.len); |
| 928 | self->tx_buff.data += actual; |
| 929 | self->tx_buff.len -= actual; |
| 930 | } |
| 931 | else |
| 932 | { |
| 933 | if (self->new_speed) |
| 934 | { |
| 935 | /* We must wait until all data are gone */ |
| 936 | while(!(inb(iobase+UART_LSR) & UART_LSR_TEMT)) |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 937 | IRDA_DEBUG(1, "%s(), UART_LSR_THRE\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 939 | IRDA_DEBUG(1, "%s(), Changing speed! self->new_speed = %d\n", __func__ , self->new_speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | ali_ircc_change_speed(self, self->new_speed); |
| 941 | self->new_speed = 0; |
| 942 | |
| 943 | // benjamin 2000/11/10 06:32PM |
| 944 | if (self->io.speed > 115200) |
| 945 | { |
Frans Pop | 19299b34 | 2010-03-24 07:57:30 +0000 | [diff] [blame] | 946 | IRDA_DEBUG(2, "%s(), ali_ircc_change_speed from UART_LSR_TEMT\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | |
| 948 | self->ier = IER_EOM; |
| 949 | // SetCOMInterrupts(self, TRUE); |
| 950 | return; |
| 951 | } |
| 952 | } |
| 953 | else |
| 954 | { |
| 955 | netif_wake_queue(self->netdev); |
| 956 | } |
| 957 | |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 958 | self->netdev->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | |
| 960 | /* Turn on receive interrupts */ |
| 961 | outb(UART_IER_RDI, iobase+UART_IER); |
| 962 | } |
| 963 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 964 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | } |
| 966 | |
| 967 | static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud) |
| 968 | { |
| 969 | struct net_device *dev = self->netdev; |
| 970 | int iobase; |
| 971 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 972 | IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 973 | |
Frans Pop | 19299b34 | 2010-03-24 07:57:30 +0000 | [diff] [blame] | 974 | IRDA_DEBUG(2, "%s(), setting speed = %d\n", __func__ , baud); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | |
| 976 | /* This function *must* be called with irq off and spin-lock. |
| 977 | * - Jean II */ |
| 978 | |
| 979 | iobase = self->io.fir_base; |
| 980 | |
| 981 | SetCOMInterrupts(self, FALSE); // 2000/11/24 11:43AM |
| 982 | |
| 983 | /* Go to MIR, FIR Speed */ |
| 984 | if (baud > 115200) |
| 985 | { |
| 986 | |
| 987 | |
| 988 | ali_ircc_fir_change_speed(self, baud); |
| 989 | |
| 990 | /* Install FIR xmit handler*/ |
Stephen Hemminger | 2d44a22 | 2009-03-20 19:35:40 +0000 | [diff] [blame] | 991 | dev->netdev_ops = &ali_ircc_fir_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | |
| 993 | /* Enable Interuupt */ |
| 994 | self->ier = IER_EOM; // benjamin 2000/11/20 07:24PM |
| 995 | |
| 996 | /* Be ready for incomming frames */ |
| 997 | ali_ircc_dma_receive(self); // benajmin 2000/11/8 07:46PM not complete |
| 998 | } |
| 999 | /* Go to SIR Speed */ |
| 1000 | else |
| 1001 | { |
| 1002 | ali_ircc_sir_change_speed(self, baud); |
| 1003 | |
| 1004 | /* Install SIR xmit handler*/ |
Stephen Hemminger | 2d44a22 | 2009-03-20 19:35:40 +0000 | [diff] [blame] | 1005 | dev->netdev_ops = &ali_ircc_sir_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | } |
| 1007 | |
| 1008 | |
| 1009 | SetCOMInterrupts(self, TRUE); // 2000/11/24 11:43AM |
| 1010 | |
| 1011 | netif_wake_queue(self->netdev); |
| 1012 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1013 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | } |
| 1015 | |
| 1016 | static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 baud) |
| 1017 | { |
| 1018 | |
| 1019 | int iobase; |
Joe Perches | c2fd03a | 2012-06-04 12:44:18 +0000 | [diff] [blame^] | 1020 | struct ali_ircc_cb *self = priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | struct net_device *dev; |
| 1022 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1023 | IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | |
| 1025 | IRDA_ASSERT(self != NULL, return;); |
| 1026 | |
| 1027 | dev = self->netdev; |
| 1028 | iobase = self->io.fir_base; |
| 1029 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1030 | IRDA_DEBUG(1, "%s(), self->io.speed = %d, change to speed = %d\n", __func__ ,self->io.speed,baud); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | |
| 1032 | /* Come from SIR speed */ |
| 1033 | if(self->io.speed <=115200) |
| 1034 | { |
| 1035 | SIR2FIR(iobase); |
| 1036 | } |
| 1037 | |
| 1038 | /* Update accounting for new speed */ |
| 1039 | self->io.speed = baud; |
| 1040 | |
| 1041 | // Set Dongle Speed mode |
| 1042 | ali_ircc_change_dongle_speed(self, baud); |
| 1043 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1044 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | } |
| 1046 | |
| 1047 | /* |
| 1048 | * Function ali_sir_change_speed (self, speed) |
| 1049 | * |
| 1050 | * Set speed of IrDA port to specified baudrate |
| 1051 | * |
| 1052 | */ |
| 1053 | static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed) |
| 1054 | { |
Joe Perches | c2fd03a | 2012-06-04 12:44:18 +0000 | [diff] [blame^] | 1055 | struct ali_ircc_cb *self = priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | unsigned long flags; |
| 1057 | int iobase; |
| 1058 | int fcr; /* FIFO control reg */ |
| 1059 | int lcr; /* Line control reg */ |
| 1060 | int divisor; |
| 1061 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1062 | IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1064 | IRDA_DEBUG(1, "%s(), Setting speed to: %d\n", __func__ , speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | |
| 1066 | IRDA_ASSERT(self != NULL, return;); |
| 1067 | |
| 1068 | iobase = self->io.sir_base; |
| 1069 | |
| 1070 | /* Come from MIR or FIR speed */ |
| 1071 | if(self->io.speed >115200) |
| 1072 | { |
| 1073 | // Set Dongle Speed mode first |
| 1074 | ali_ircc_change_dongle_speed(self, speed); |
| 1075 | |
| 1076 | FIR2SIR(iobase); |
| 1077 | } |
| 1078 | |
| 1079 | // Clear Line and Auxiluary status registers 2000/11/24 11:47AM |
| 1080 | |
| 1081 | inb(iobase+UART_LSR); |
| 1082 | inb(iobase+UART_SCR); |
| 1083 | |
| 1084 | /* Update accounting for new speed */ |
| 1085 | self->io.speed = speed; |
| 1086 | |
| 1087 | spin_lock_irqsave(&self->lock, flags); |
| 1088 | |
| 1089 | divisor = 115200/speed; |
| 1090 | |
| 1091 | fcr = UART_FCR_ENABLE_FIFO; |
| 1092 | |
| 1093 | /* |
| 1094 | * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and |
| 1095 | * almost 1,7 ms at 19200 bps. At speeds above that we can just forget |
| 1096 | * about this timeout since it will always be fast enough. |
| 1097 | */ |
| 1098 | if (self->io.speed < 38400) |
| 1099 | fcr |= UART_FCR_TRIGGER_1; |
| 1100 | else |
| 1101 | fcr |= UART_FCR_TRIGGER_14; |
| 1102 | |
| 1103 | /* IrDA ports use 8N1 */ |
| 1104 | lcr = UART_LCR_WLEN8; |
| 1105 | |
| 1106 | outb(UART_LCR_DLAB | lcr, iobase+UART_LCR); /* Set DLAB */ |
| 1107 | outb(divisor & 0xff, iobase+UART_DLL); /* Set speed */ |
| 1108 | outb(divisor >> 8, iobase+UART_DLM); |
| 1109 | outb(lcr, iobase+UART_LCR); /* Set 8N1 */ |
| 1110 | outb(fcr, iobase+UART_FCR); /* Enable FIFO's */ |
| 1111 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1112 | /* without this, the connection will be broken after come back from FIR speed, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | but with this, the SIR connection is harder to established */ |
| 1114 | outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase+UART_MCR); |
| 1115 | |
| 1116 | spin_unlock_irqrestore(&self->lock, flags); |
| 1117 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1118 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1119 | } |
| 1120 | |
| 1121 | static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed) |
| 1122 | { |
| 1123 | |
Joe Perches | c2fd03a | 2012-06-04 12:44:18 +0000 | [diff] [blame^] | 1124 | struct ali_ircc_cb *self = priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | int iobase,dongle_id; |
| 1126 | int tmp = 0; |
| 1127 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1128 | IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | |
| 1130 | iobase = self->io.fir_base; /* or iobase = self->io.sir_base; */ |
| 1131 | dongle_id = self->io.dongle_id; |
| 1132 | |
| 1133 | /* We are already locked, no need to do it again */ |
| 1134 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1135 | IRDA_DEBUG(1, "%s(), Set Speed for %s , Speed = %d\n", __func__ , dongle_types[dongle_id], speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | |
| 1137 | switch_bank(iobase, BANK2); |
| 1138 | tmp = inb(iobase+FIR_IRDA_CR); |
| 1139 | |
| 1140 | /* IBM type dongle */ |
| 1141 | if(dongle_id == 0) |
| 1142 | { |
| 1143 | if(speed == 4000000) |
| 1144 | { |
| 1145 | // __ __ |
| 1146 | // SD/MODE __| |__ __ |
| 1147 | // __ __ |
| 1148 | // IRTX __ __| |__ |
| 1149 | // T1 T2 T3 T4 T5 |
| 1150 | |
| 1151 | tmp &= ~IRDA_CR_HDLC; // HDLC=0 |
| 1152 | tmp |= IRDA_CR_CRC; // CRC=1 |
| 1153 | |
| 1154 | switch_bank(iobase, BANK2); |
| 1155 | outb(tmp, iobase+FIR_IRDA_CR); |
| 1156 | |
| 1157 | // T1 -> SD/MODE:0 IRTX:0 |
| 1158 | tmp &= ~0x09; |
| 1159 | tmp |= 0x02; |
| 1160 | outb(tmp, iobase+FIR_IRDA_CR); |
| 1161 | udelay(2); |
| 1162 | |
| 1163 | // T2 -> SD/MODE:1 IRTX:0 |
| 1164 | tmp &= ~0x01; |
| 1165 | tmp |= 0x0a; |
| 1166 | outb(tmp, iobase+FIR_IRDA_CR); |
| 1167 | udelay(2); |
| 1168 | |
| 1169 | // T3 -> SD/MODE:1 IRTX:1 |
| 1170 | tmp |= 0x0b; |
| 1171 | outb(tmp, iobase+FIR_IRDA_CR); |
| 1172 | udelay(2); |
| 1173 | |
| 1174 | // T4 -> SD/MODE:0 IRTX:1 |
| 1175 | tmp &= ~0x08; |
| 1176 | tmp |= 0x03; |
| 1177 | outb(tmp, iobase+FIR_IRDA_CR); |
| 1178 | udelay(2); |
| 1179 | |
| 1180 | // T5 -> SD/MODE:0 IRTX:0 |
| 1181 | tmp &= ~0x09; |
| 1182 | tmp |= 0x02; |
| 1183 | outb(tmp, iobase+FIR_IRDA_CR); |
| 1184 | udelay(2); |
| 1185 | |
| 1186 | // reset -> Normal TX output Signal |
| 1187 | outb(tmp & ~0x02, iobase+FIR_IRDA_CR); |
| 1188 | } |
| 1189 | else /* speed <=1152000 */ |
| 1190 | { |
| 1191 | // __ |
| 1192 | // SD/MODE __| |__ |
| 1193 | // |
| 1194 | // IRTX ________ |
| 1195 | // T1 T2 T3 |
| 1196 | |
| 1197 | /* MIR 115200, 57600 */ |
| 1198 | if (speed==1152000) |
| 1199 | { |
| 1200 | tmp |= 0xA0; //HDLC=1, 1.152Mbps=1 |
| 1201 | } |
| 1202 | else |
| 1203 | { |
| 1204 | tmp &=~0x80; //HDLC 0.576Mbps |
| 1205 | tmp |= 0x20; //HDLC=1, |
| 1206 | } |
| 1207 | |
| 1208 | tmp |= IRDA_CR_CRC; // CRC=1 |
| 1209 | |
| 1210 | switch_bank(iobase, BANK2); |
| 1211 | outb(tmp, iobase+FIR_IRDA_CR); |
| 1212 | |
| 1213 | /* MIR 115200, 57600 */ |
| 1214 | |
| 1215 | //switch_bank(iobase, BANK2); |
| 1216 | // T1 -> SD/MODE:0 IRTX:0 |
| 1217 | tmp &= ~0x09; |
| 1218 | tmp |= 0x02; |
| 1219 | outb(tmp, iobase+FIR_IRDA_CR); |
| 1220 | udelay(2); |
| 1221 | |
| 1222 | // T2 -> SD/MODE:1 IRTX:0 |
| 1223 | tmp &= ~0x01; |
| 1224 | tmp |= 0x0a; |
| 1225 | outb(tmp, iobase+FIR_IRDA_CR); |
| 1226 | |
| 1227 | // T3 -> SD/MODE:0 IRTX:0 |
| 1228 | tmp &= ~0x09; |
| 1229 | tmp |= 0x02; |
| 1230 | outb(tmp, iobase+FIR_IRDA_CR); |
| 1231 | udelay(2); |
| 1232 | |
| 1233 | // reset -> Normal TX output Signal |
| 1234 | outb(tmp & ~0x02, iobase+FIR_IRDA_CR); |
| 1235 | } |
| 1236 | } |
| 1237 | else if (dongle_id == 1) /* HP HDSL-3600 */ |
| 1238 | { |
| 1239 | switch(speed) |
| 1240 | { |
| 1241 | case 4000000: |
| 1242 | tmp &= ~IRDA_CR_HDLC; // HDLC=0 |
| 1243 | break; |
| 1244 | |
| 1245 | case 1152000: |
| 1246 | tmp |= 0xA0; // HDLC=1, 1.152Mbps=1 |
| 1247 | break; |
| 1248 | |
| 1249 | case 576000: |
| 1250 | tmp &=~0x80; // HDLC 0.576Mbps |
| 1251 | tmp |= 0x20; // HDLC=1, |
| 1252 | break; |
| 1253 | } |
| 1254 | |
| 1255 | tmp |= IRDA_CR_CRC; // CRC=1 |
| 1256 | |
| 1257 | switch_bank(iobase, BANK2); |
| 1258 | outb(tmp, iobase+FIR_IRDA_CR); |
| 1259 | } |
| 1260 | else /* HP HDSL-1100 */ |
| 1261 | { |
| 1262 | if(speed <= 115200) /* SIR */ |
| 1263 | { |
| 1264 | |
| 1265 | tmp &= ~IRDA_CR_FIR_SIN; // HP sin select = 0 |
| 1266 | |
| 1267 | switch_bank(iobase, BANK2); |
| 1268 | outb(tmp, iobase+FIR_IRDA_CR); |
| 1269 | } |
| 1270 | else /* MIR FIR */ |
| 1271 | { |
| 1272 | |
| 1273 | switch(speed) |
| 1274 | { |
| 1275 | case 4000000: |
| 1276 | tmp &= ~IRDA_CR_HDLC; // HDLC=0 |
| 1277 | break; |
| 1278 | |
| 1279 | case 1152000: |
| 1280 | tmp |= 0xA0; // HDLC=1, 1.152Mbps=1 |
| 1281 | break; |
| 1282 | |
| 1283 | case 576000: |
| 1284 | tmp &=~0x80; // HDLC 0.576Mbps |
| 1285 | tmp |= 0x20; // HDLC=1, |
| 1286 | break; |
| 1287 | } |
| 1288 | |
| 1289 | tmp |= IRDA_CR_CRC; // CRC=1 |
| 1290 | tmp |= IRDA_CR_FIR_SIN; // HP sin select = 1 |
| 1291 | |
| 1292 | switch_bank(iobase, BANK2); |
| 1293 | outb(tmp, iobase+FIR_IRDA_CR); |
| 1294 | } |
| 1295 | } |
| 1296 | |
| 1297 | switch_bank(iobase, BANK0); |
| 1298 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1299 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1300 | } |
| 1301 | |
| 1302 | /* |
| 1303 | * Function ali_ircc_sir_write (driver) |
| 1304 | * |
| 1305 | * Fill Tx FIFO with transmit data |
| 1306 | * |
| 1307 | */ |
| 1308 | static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len) |
| 1309 | { |
| 1310 | int actual = 0; |
| 1311 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1312 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1313 | |
| 1314 | /* Tx FIFO should be empty! */ |
| 1315 | if (!(inb(iobase+UART_LSR) & UART_LSR_THRE)) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1316 | IRDA_DEBUG(0, "%s(), failed, fifo not empty!\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1317 | return 0; |
| 1318 | } |
| 1319 | |
| 1320 | /* Fill FIFO with current frame */ |
| 1321 | while ((fifo_size-- > 0) && (actual < len)) { |
| 1322 | /* Transmit next byte */ |
| 1323 | outb(buf[actual], iobase+UART_TX); |
| 1324 | |
| 1325 | actual++; |
| 1326 | } |
| 1327 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1328 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1329 | return actual; |
| 1330 | } |
| 1331 | |
| 1332 | /* |
| 1333 | * Function ali_ircc_net_open (dev) |
| 1334 | * |
| 1335 | * Start the device |
| 1336 | * |
| 1337 | */ |
| 1338 | static int ali_ircc_net_open(struct net_device *dev) |
| 1339 | { |
| 1340 | struct ali_ircc_cb *self; |
| 1341 | int iobase; |
| 1342 | char hwname[32]; |
| 1343 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1344 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1345 | |
| 1346 | IRDA_ASSERT(dev != NULL, return -1;); |
| 1347 | |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1348 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1349 | |
| 1350 | IRDA_ASSERT(self != NULL, return 0;); |
| 1351 | |
| 1352 | iobase = self->io.fir_base; |
| 1353 | |
| 1354 | /* Request IRQ and install Interrupt Handler */ |
| 1355 | if (request_irq(self->io.irq, ali_ircc_interrupt, 0, dev->name, dev)) |
| 1356 | { |
Samuel Ortiz | 898b1d1 | 2006-05-25 16:21:10 -0700 | [diff] [blame] | 1357 | IRDA_WARNING("%s, unable to allocate irq=%d\n", |
| 1358 | ALI_IRCC_DRIVER_NAME, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | self->io.irq); |
| 1360 | return -EAGAIN; |
| 1361 | } |
| 1362 | |
| 1363 | /* |
| 1364 | * Always allocate the DMA channel after the IRQ, and clean up on |
| 1365 | * failure. |
| 1366 | */ |
| 1367 | if (request_dma(self->io.dma, dev->name)) { |
Samuel Ortiz | 898b1d1 | 2006-05-25 16:21:10 -0700 | [diff] [blame] | 1368 | IRDA_WARNING("%s, unable to allocate dma=%d\n", |
| 1369 | ALI_IRCC_DRIVER_NAME, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1370 | self->io.dma); |
Julia Lawall | a997cbb3 | 2012-03-11 11:49:02 +0000 | [diff] [blame] | 1371 | free_irq(self->io.irq, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | return -EAGAIN; |
| 1373 | } |
| 1374 | |
| 1375 | /* Turn on interrups */ |
| 1376 | outb(UART_IER_RDI , iobase+UART_IER); |
| 1377 | |
| 1378 | /* Ready to play! */ |
| 1379 | netif_start_queue(dev); //benjamin by irport |
| 1380 | |
| 1381 | /* Give self a hardware name */ |
| 1382 | sprintf(hwname, "ALI-FIR @ 0x%03x", self->io.fir_base); |
| 1383 | |
| 1384 | /* |
| 1385 | * Open new IrLAP layer instance, now that everything should be |
| 1386 | * initialized properly |
| 1387 | */ |
| 1388 | self->irlap = irlap_open(dev, &self->qos, hwname); |
| 1389 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1390 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1391 | |
| 1392 | return 0; |
| 1393 | } |
| 1394 | |
| 1395 | /* |
| 1396 | * Function ali_ircc_net_close (dev) |
| 1397 | * |
| 1398 | * Stop the device |
| 1399 | * |
| 1400 | */ |
| 1401 | static int ali_ircc_net_close(struct net_device *dev) |
| 1402 | { |
| 1403 | |
| 1404 | struct ali_ircc_cb *self; |
| 1405 | //int iobase; |
| 1406 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1407 | IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1408 | |
| 1409 | IRDA_ASSERT(dev != NULL, return -1;); |
| 1410 | |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1411 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | IRDA_ASSERT(self != NULL, return 0;); |
| 1413 | |
| 1414 | /* Stop device */ |
| 1415 | netif_stop_queue(dev); |
| 1416 | |
| 1417 | /* Stop and remove instance of IrLAP */ |
| 1418 | if (self->irlap) |
| 1419 | irlap_close(self->irlap); |
| 1420 | self->irlap = NULL; |
| 1421 | |
| 1422 | disable_dma(self->io.dma); |
| 1423 | |
| 1424 | /* Disable interrupts */ |
| 1425 | SetCOMInterrupts(self, FALSE); |
| 1426 | |
| 1427 | free_irq(self->io.irq, dev); |
| 1428 | free_dma(self->io.dma); |
| 1429 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1430 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | |
| 1432 | return 0; |
| 1433 | } |
| 1434 | |
| 1435 | /* |
| 1436 | * Function ali_ircc_fir_hard_xmit (skb, dev) |
| 1437 | * |
| 1438 | * Transmit the frame |
| 1439 | * |
| 1440 | */ |
Stephen Hemminger | 6518bbb | 2009-08-31 19:50:50 +0000 | [diff] [blame] | 1441 | static netdev_tx_t ali_ircc_fir_hard_xmit(struct sk_buff *skb, |
| 1442 | struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1443 | { |
| 1444 | struct ali_ircc_cb *self; |
| 1445 | unsigned long flags; |
| 1446 | int iobase; |
| 1447 | __u32 speed; |
| 1448 | int mtt, diff; |
| 1449 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1450 | IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1452 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | iobase = self->io.fir_base; |
| 1454 | |
| 1455 | netif_stop_queue(dev); |
| 1456 | |
| 1457 | /* Make sure tests *& speed change are atomic */ |
| 1458 | spin_lock_irqsave(&self->lock, flags); |
| 1459 | |
| 1460 | /* Note : you should make sure that speed changes are not going |
| 1461 | * to corrupt any outgoing frame. Look at nsc-ircc for the gory |
| 1462 | * details - Jean II */ |
| 1463 | |
| 1464 | /* Check if we need to change the speed */ |
| 1465 | speed = irda_get_next_speed(skb); |
| 1466 | if ((speed != self->io.speed) && (speed != -1)) { |
| 1467 | /* Check for empty frame */ |
| 1468 | if (!skb->len) { |
| 1469 | ali_ircc_change_speed(self, speed); |
| 1470 | dev->trans_start = jiffies; |
| 1471 | spin_unlock_irqrestore(&self->lock, flags); |
| 1472 | dev_kfree_skb(skb); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1473 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1474 | } else |
| 1475 | self->new_speed = speed; |
| 1476 | } |
| 1477 | |
| 1478 | /* Register and copy this frame to DMA memory */ |
| 1479 | self->tx_fifo.queue[self->tx_fifo.free].start = self->tx_fifo.tail; |
| 1480 | self->tx_fifo.queue[self->tx_fifo.free].len = skb->len; |
| 1481 | self->tx_fifo.tail += skb->len; |
| 1482 | |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1483 | dev->stats.tx_bytes += skb->len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1484 | |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 1485 | skb_copy_from_linear_data(skb, self->tx_fifo.queue[self->tx_fifo.free].start, |
| 1486 | skb->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1487 | self->tx_fifo.len++; |
| 1488 | self->tx_fifo.free++; |
| 1489 | |
| 1490 | /* Start transmit only if there is currently no transmit going on */ |
| 1491 | if (self->tx_fifo.len == 1) |
| 1492 | { |
| 1493 | /* Check if we must wait the min turn time or not */ |
| 1494 | mtt = irda_get_mtt(skb); |
| 1495 | |
| 1496 | if (mtt) |
| 1497 | { |
| 1498 | /* Check how much time we have used already */ |
| 1499 | do_gettimeofday(&self->now); |
| 1500 | |
| 1501 | diff = self->now.tv_usec - self->stamp.tv_usec; |
| 1502 | /* self->stamp is set from ali_ircc_dma_receive_complete() */ |
| 1503 | |
Frans Pop | 19299b34 | 2010-03-24 07:57:30 +0000 | [diff] [blame] | 1504 | IRDA_DEBUG(1, "%s(), ******* diff = %d *******\n", __func__ , diff); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | |
| 1506 | if (diff < 0) |
| 1507 | diff += 1000000; |
| 1508 | |
| 1509 | /* Check if the mtt is larger than the time we have |
| 1510 | * already used by all the protocol processing |
| 1511 | */ |
| 1512 | if (mtt > diff) |
| 1513 | { |
| 1514 | mtt -= diff; |
| 1515 | |
| 1516 | /* |
| 1517 | * Use timer if delay larger than 1000 us, and |
| 1518 | * use udelay for smaller values which should |
| 1519 | * be acceptable |
| 1520 | */ |
| 1521 | if (mtt > 500) |
| 1522 | { |
| 1523 | /* Adjust for timer resolution */ |
| 1524 | mtt = (mtt+250) / 500; /* 4 discard, 5 get advanced, Let's round off */ |
| 1525 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1526 | IRDA_DEBUG(1, "%s(), ************** mtt = %d ***********\n", __func__ , mtt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1527 | |
| 1528 | /* Setup timer */ |
| 1529 | if (mtt == 1) /* 500 us */ |
| 1530 | { |
| 1531 | switch_bank(iobase, BANK1); |
| 1532 | outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); |
| 1533 | } |
| 1534 | else if (mtt == 2) /* 1 ms */ |
| 1535 | { |
| 1536 | switch_bank(iobase, BANK1); |
| 1537 | outb(TIMER_IIR_1ms, iobase+FIR_TIMER_IIR); |
| 1538 | } |
| 1539 | else /* > 2ms -> 4ms */ |
| 1540 | { |
| 1541 | switch_bank(iobase, BANK1); |
| 1542 | outb(TIMER_IIR_2ms, iobase+FIR_TIMER_IIR); |
| 1543 | } |
| 1544 | |
| 1545 | |
| 1546 | /* Start timer */ |
| 1547 | outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR); |
| 1548 | self->io.direction = IO_XMIT; |
| 1549 | |
| 1550 | /* Enable timer interrupt */ |
| 1551 | self->ier = IER_TIMER; |
| 1552 | SetCOMInterrupts(self, TRUE); |
| 1553 | |
| 1554 | /* Timer will take care of the rest */ |
| 1555 | goto out; |
| 1556 | } |
| 1557 | else |
| 1558 | udelay(mtt); |
| 1559 | } // if (if (mtt > diff) |
| 1560 | }// if (mtt) |
| 1561 | |
| 1562 | /* Enable EOM interrupt */ |
| 1563 | self->ier = IER_EOM; |
| 1564 | SetCOMInterrupts(self, TRUE); |
| 1565 | |
| 1566 | /* Transmit frame */ |
| 1567 | ali_ircc_dma_xmit(self); |
| 1568 | } // if (self->tx_fifo.len == 1) |
| 1569 | |
| 1570 | out: |
| 1571 | |
| 1572 | /* Not busy transmitting anymore if window is not full */ |
| 1573 | if (self->tx_fifo.free < MAX_TX_WINDOW) |
| 1574 | netif_wake_queue(self->netdev); |
| 1575 | |
| 1576 | /* Restore bank register */ |
| 1577 | switch_bank(iobase, BANK0); |
| 1578 | |
| 1579 | dev->trans_start = jiffies; |
| 1580 | spin_unlock_irqrestore(&self->lock, flags); |
| 1581 | dev_kfree_skb(skb); |
| 1582 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1583 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1584 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | } |
| 1586 | |
| 1587 | |
| 1588 | static void ali_ircc_dma_xmit(struct ali_ircc_cb *self) |
| 1589 | { |
| 1590 | int iobase, tmp; |
| 1591 | unsigned char FIFO_OPTI, Hi, Lo; |
| 1592 | |
| 1593 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1594 | IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1595 | |
| 1596 | iobase = self->io.fir_base; |
| 1597 | |
| 1598 | /* FIFO threshold , this method comes from NDIS5 code */ |
| 1599 | |
| 1600 | if(self->tx_fifo.queue[self->tx_fifo.ptr].len < TX_FIFO_Threshold) |
| 1601 | FIFO_OPTI = self->tx_fifo.queue[self->tx_fifo.ptr].len-1; |
| 1602 | else |
| 1603 | FIFO_OPTI = TX_FIFO_Threshold; |
| 1604 | |
| 1605 | /* Disable DMA */ |
| 1606 | switch_bank(iobase, BANK1); |
| 1607 | outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); |
| 1608 | |
| 1609 | self->io.direction = IO_XMIT; |
| 1610 | |
| 1611 | irda_setup_dma(self->io.dma, |
| 1612 | ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start - |
| 1613 | self->tx_buff.head) + self->tx_buff_dma, |
| 1614 | self->tx_fifo.queue[self->tx_fifo.ptr].len, |
| 1615 | DMA_TX_MODE); |
| 1616 | |
| 1617 | /* Reset Tx FIFO */ |
| 1618 | switch_bank(iobase, BANK0); |
| 1619 | outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A); |
| 1620 | |
| 1621 | /* Set Tx FIFO threshold */ |
| 1622 | if (self->fifo_opti_buf!=FIFO_OPTI) |
| 1623 | { |
| 1624 | switch_bank(iobase, BANK1); |
| 1625 | outb(FIFO_OPTI, iobase+FIR_FIFO_TR) ; |
| 1626 | self->fifo_opti_buf=FIFO_OPTI; |
| 1627 | } |
| 1628 | |
| 1629 | /* Set Tx DMA threshold */ |
| 1630 | switch_bank(iobase, BANK1); |
| 1631 | outb(TX_DMA_Threshold, iobase+FIR_DMA_TR); |
| 1632 | |
| 1633 | /* Set max Tx frame size */ |
| 1634 | Hi = (self->tx_fifo.queue[self->tx_fifo.ptr].len >> 8) & 0x0f; |
| 1635 | Lo = self->tx_fifo.queue[self->tx_fifo.ptr].len & 0xff; |
| 1636 | switch_bank(iobase, BANK2); |
| 1637 | outb(Hi, iobase+FIR_TX_DSR_HI); |
| 1638 | outb(Lo, iobase+FIR_TX_DSR_LO); |
| 1639 | |
| 1640 | /* Disable SIP , Disable Brick Wall (we don't support in TX mode), Change to TX mode */ |
| 1641 | switch_bank(iobase, BANK0); |
| 1642 | tmp = inb(iobase+FIR_LCR_B); |
| 1643 | tmp &= ~0x20; // Disable SIP |
| 1644 | outb(((unsigned char)(tmp & 0x3f) | LCR_B_TX_MODE) & ~LCR_B_BW, iobase+FIR_LCR_B); |
Frans Pop | 19299b34 | 2010-03-24 07:57:30 +0000 | [diff] [blame] | 1645 | IRDA_DEBUG(1, "%s(), *** Change to TX mode: FIR_LCR_B = 0x%x ***\n", __func__ , inb(iobase+FIR_LCR_B)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1646 | |
| 1647 | outb(0, iobase+FIR_LSR); |
| 1648 | |
| 1649 | /* Enable DMA and Burst Mode */ |
| 1650 | switch_bank(iobase, BANK1); |
| 1651 | outb(inb(iobase+FIR_CR) | CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR); |
| 1652 | |
| 1653 | switch_bank(iobase, BANK0); |
| 1654 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1655 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1656 | } |
| 1657 | |
| 1658 | static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self) |
| 1659 | { |
| 1660 | int iobase; |
| 1661 | int ret = TRUE; |
| 1662 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1663 | IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1664 | |
| 1665 | iobase = self->io.fir_base; |
| 1666 | |
| 1667 | /* Disable DMA */ |
| 1668 | switch_bank(iobase, BANK1); |
| 1669 | outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); |
| 1670 | |
| 1671 | /* Check for underrun! */ |
| 1672 | switch_bank(iobase, BANK0); |
| 1673 | if((inb(iobase+FIR_LSR) & LSR_FRAME_ABORT) == LSR_FRAME_ABORT) |
| 1674 | |
| 1675 | { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1676 | IRDA_ERROR("%s(), ********* LSR_FRAME_ABORT *********\n", __func__); |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1677 | self->netdev->stats.tx_errors++; |
| 1678 | self->netdev->stats.tx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1679 | } |
| 1680 | else |
| 1681 | { |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1682 | self->netdev->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1683 | } |
| 1684 | |
| 1685 | /* Check if we need to change the speed */ |
| 1686 | if (self->new_speed) |
| 1687 | { |
| 1688 | ali_ircc_change_speed(self, self->new_speed); |
| 1689 | self->new_speed = 0; |
| 1690 | } |
| 1691 | |
| 1692 | /* Finished with this frame, so prepare for next */ |
| 1693 | self->tx_fifo.ptr++; |
| 1694 | self->tx_fifo.len--; |
| 1695 | |
| 1696 | /* Any frames to be sent back-to-back? */ |
| 1697 | if (self->tx_fifo.len) |
| 1698 | { |
| 1699 | ali_ircc_dma_xmit(self); |
| 1700 | |
| 1701 | /* Not finished yet! */ |
| 1702 | ret = FALSE; |
| 1703 | } |
| 1704 | else |
| 1705 | { /* Reset Tx FIFO info */ |
| 1706 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; |
| 1707 | self->tx_fifo.tail = self->tx_buff.head; |
| 1708 | } |
| 1709 | |
| 1710 | /* Make sure we have room for more frames */ |
| 1711 | if (self->tx_fifo.free < MAX_TX_WINDOW) { |
| 1712 | /* Not busy transmitting anymore */ |
| 1713 | /* Tell the network layer, that we can accept more frames */ |
| 1714 | netif_wake_queue(self->netdev); |
| 1715 | } |
| 1716 | |
| 1717 | switch_bank(iobase, BANK0); |
| 1718 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1719 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1720 | return ret; |
| 1721 | } |
| 1722 | |
| 1723 | /* |
| 1724 | * Function ali_ircc_dma_receive (self) |
| 1725 | * |
| 1726 | * Get ready for receiving a frame. The device will initiate a DMA |
| 1727 | * if it starts to receive a frame. |
| 1728 | * |
| 1729 | */ |
| 1730 | static int ali_ircc_dma_receive(struct ali_ircc_cb *self) |
| 1731 | { |
| 1732 | int iobase, tmp; |
| 1733 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1734 | IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1735 | |
| 1736 | iobase = self->io.fir_base; |
| 1737 | |
| 1738 | /* Reset Tx FIFO info */ |
| 1739 | self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0; |
| 1740 | self->tx_fifo.tail = self->tx_buff.head; |
| 1741 | |
| 1742 | /* Disable DMA */ |
| 1743 | switch_bank(iobase, BANK1); |
| 1744 | outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR); |
| 1745 | |
| 1746 | /* Reset Message Count */ |
| 1747 | switch_bank(iobase, BANK0); |
| 1748 | outb(0x07, iobase+FIR_LSR); |
| 1749 | |
| 1750 | self->rcvFramesOverflow = FALSE; |
| 1751 | |
| 1752 | self->LineStatus = inb(iobase+FIR_LSR) ; |
| 1753 | |
| 1754 | /* Reset Rx FIFO info */ |
| 1755 | self->io.direction = IO_RECV; |
| 1756 | self->rx_buff.data = self->rx_buff.head; |
| 1757 | |
| 1758 | /* Reset Rx FIFO */ |
| 1759 | // switch_bank(iobase, BANK0); |
| 1760 | outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A); |
| 1761 | |
| 1762 | self->st_fifo.len = self->st_fifo.pending_bytes = 0; |
| 1763 | self->st_fifo.tail = self->st_fifo.head = 0; |
| 1764 | |
| 1765 | irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize, |
| 1766 | DMA_RX_MODE); |
| 1767 | |
| 1768 | /* Set Receive Mode,Brick Wall */ |
| 1769 | //switch_bank(iobase, BANK0); |
| 1770 | tmp = inb(iobase+FIR_LCR_B); |
| 1771 | outb((unsigned char)(tmp &0x3f) | LCR_B_RX_MODE | LCR_B_BW , iobase + FIR_LCR_B); // 2000/12/1 05:16PM |
Frans Pop | 19299b34 | 2010-03-24 07:57:30 +0000 | [diff] [blame] | 1772 | IRDA_DEBUG(1, "%s(), *** Change To RX mode: FIR_LCR_B = 0x%x ***\n", __func__ , inb(iobase+FIR_LCR_B)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1773 | |
| 1774 | /* Set Rx Threshold */ |
| 1775 | switch_bank(iobase, BANK1); |
| 1776 | outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR); |
| 1777 | outb(RX_DMA_Threshold, iobase+FIR_DMA_TR); |
| 1778 | |
| 1779 | /* Enable DMA and Burst Mode */ |
| 1780 | // switch_bank(iobase, BANK1); |
| 1781 | outb(CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR); |
| 1782 | |
| 1783 | switch_bank(iobase, BANK0); |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1784 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1785 | return 0; |
| 1786 | } |
| 1787 | |
| 1788 | static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self) |
| 1789 | { |
| 1790 | struct st_fifo *st_fifo; |
| 1791 | struct sk_buff *skb; |
| 1792 | __u8 status, MessageCount; |
| 1793 | int len, i, iobase, val; |
| 1794 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1795 | IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1796 | |
| 1797 | st_fifo = &self->st_fifo; |
| 1798 | iobase = self->io.fir_base; |
| 1799 | |
| 1800 | switch_bank(iobase, BANK0); |
| 1801 | MessageCount = inb(iobase+ FIR_LSR)&0x07; |
| 1802 | |
| 1803 | if (MessageCount > 0) |
Justin P. Mattock | 70f23fd | 2011-05-10 10:16:21 +0200 | [diff] [blame] | 1804 | IRDA_DEBUG(0, "%s(), Message count = %d,\n", __func__ , MessageCount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1805 | |
| 1806 | for (i=0; i<=MessageCount; i++) |
| 1807 | { |
| 1808 | /* Bank 0 */ |
| 1809 | switch_bank(iobase, BANK0); |
| 1810 | status = inb(iobase+FIR_LSR); |
| 1811 | |
| 1812 | switch_bank(iobase, BANK2); |
| 1813 | len = inb(iobase+FIR_RX_DSR_HI) & 0x0f; |
| 1814 | len = len << 8; |
| 1815 | len |= inb(iobase+FIR_RX_DSR_LO); |
| 1816 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1817 | IRDA_DEBUG(1, "%s(), RX Length = 0x%.2x,\n", __func__ , len); |
| 1818 | IRDA_DEBUG(1, "%s(), RX Status = 0x%.2x,\n", __func__ , status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1819 | |
| 1820 | if (st_fifo->tail >= MAX_RX_WINDOW) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1821 | IRDA_DEBUG(0, "%s(), window is full!\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1822 | continue; |
| 1823 | } |
| 1824 | |
| 1825 | st_fifo->entries[st_fifo->tail].status = status; |
| 1826 | st_fifo->entries[st_fifo->tail].len = len; |
| 1827 | st_fifo->pending_bytes += len; |
| 1828 | st_fifo->tail++; |
| 1829 | st_fifo->len++; |
| 1830 | } |
| 1831 | |
| 1832 | for (i=0; i<=MessageCount; i++) |
| 1833 | { |
| 1834 | /* Get first entry */ |
| 1835 | status = st_fifo->entries[st_fifo->head].status; |
| 1836 | len = st_fifo->entries[st_fifo->head].len; |
| 1837 | st_fifo->pending_bytes -= len; |
| 1838 | st_fifo->head++; |
| 1839 | st_fifo->len--; |
| 1840 | |
| 1841 | /* Check for errors */ |
| 1842 | if ((status & 0xd8) || self->rcvFramesOverflow || (len==0)) |
| 1843 | { |
Frans Pop | 19299b34 | 2010-03-24 07:57:30 +0000 | [diff] [blame] | 1844 | IRDA_DEBUG(0,"%s(), ************* RX Errors ************\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1845 | |
| 1846 | /* Skip frame */ |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1847 | self->netdev->stats.rx_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1848 | |
| 1849 | self->rx_buff.data += len; |
| 1850 | |
| 1851 | if (status & LSR_FIFO_UR) |
| 1852 | { |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1853 | self->netdev->stats.rx_frame_errors++; |
Frans Pop | 19299b34 | 2010-03-24 07:57:30 +0000 | [diff] [blame] | 1854 | IRDA_DEBUG(0,"%s(), ************* FIFO Errors ************\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1855 | } |
| 1856 | if (status & LSR_FRAME_ERROR) |
| 1857 | { |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1858 | self->netdev->stats.rx_frame_errors++; |
Frans Pop | 19299b34 | 2010-03-24 07:57:30 +0000 | [diff] [blame] | 1859 | IRDA_DEBUG(0,"%s(), ************* FRAME Errors ************\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1860 | } |
| 1861 | |
| 1862 | if (status & LSR_CRC_ERROR) |
| 1863 | { |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1864 | self->netdev->stats.rx_crc_errors++; |
Frans Pop | 19299b34 | 2010-03-24 07:57:30 +0000 | [diff] [blame] | 1865 | IRDA_DEBUG(0,"%s(), ************* CRC Errors ************\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1866 | } |
| 1867 | |
| 1868 | if(self->rcvFramesOverflow) |
| 1869 | { |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1870 | self->netdev->stats.rx_frame_errors++; |
Frans Pop | 19299b34 | 2010-03-24 07:57:30 +0000 | [diff] [blame] | 1871 | IRDA_DEBUG(0,"%s(), ************* Overran DMA buffer ************\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1872 | } |
| 1873 | if(len == 0) |
| 1874 | { |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1875 | self->netdev->stats.rx_frame_errors++; |
Frans Pop | 19299b34 | 2010-03-24 07:57:30 +0000 | [diff] [blame] | 1876 | IRDA_DEBUG(0,"%s(), ********** Receive Frame Size = 0 *********\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1877 | } |
| 1878 | } |
| 1879 | else |
| 1880 | { |
| 1881 | |
| 1882 | if (st_fifo->pending_bytes < 32) |
| 1883 | { |
| 1884 | switch_bank(iobase, BANK0); |
| 1885 | val = inb(iobase+FIR_BSR); |
| 1886 | if ((val& BSR_FIFO_NOT_EMPTY)== 0x80) |
| 1887 | { |
Frans Pop | 19299b34 | 2010-03-24 07:57:30 +0000 | [diff] [blame] | 1888 | IRDA_DEBUG(0, "%s(), ************* BSR_FIFO_NOT_EMPTY ************\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1889 | |
| 1890 | /* Put this entry back in fifo */ |
| 1891 | st_fifo->head--; |
| 1892 | st_fifo->len++; |
| 1893 | st_fifo->pending_bytes += len; |
| 1894 | st_fifo->entries[st_fifo->head].status = status; |
| 1895 | st_fifo->entries[st_fifo->head].len = len; |
| 1896 | |
| 1897 | /* |
| 1898 | * DMA not finished yet, so try again |
| 1899 | * later, set timer value, resolution |
| 1900 | * 500 us |
| 1901 | */ |
| 1902 | |
| 1903 | switch_bank(iobase, BANK1); |
| 1904 | outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); // 2001/1/2 05:07PM |
| 1905 | |
| 1906 | /* Enable Timer */ |
| 1907 | outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR); |
| 1908 | |
| 1909 | return FALSE; /* I'll be back! */ |
| 1910 | } |
| 1911 | } |
| 1912 | |
| 1913 | /* |
| 1914 | * Remember the time we received this frame, so we can |
| 1915 | * reduce the min turn time a bit since we will know |
| 1916 | * how much time we have used for protocol processing |
| 1917 | */ |
| 1918 | do_gettimeofday(&self->stamp); |
| 1919 | |
| 1920 | skb = dev_alloc_skb(len+1); |
| 1921 | if (skb == NULL) |
| 1922 | { |
| 1923 | IRDA_WARNING("%s(), memory squeeze, " |
| 1924 | "dropping frame.\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1925 | __func__); |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1926 | self->netdev->stats.rx_dropped++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1927 | |
| 1928 | return FALSE; |
| 1929 | } |
| 1930 | |
| 1931 | /* Make sure IP header gets aligned */ |
| 1932 | skb_reserve(skb, 1); |
| 1933 | |
| 1934 | /* Copy frame without CRC, CRC is removed by hardware*/ |
| 1935 | skb_put(skb, len); |
Arnaldo Carvalho de Melo | 27d7ff4 | 2007-03-31 11:55:19 -0300 | [diff] [blame] | 1936 | skb_copy_to_linear_data(skb, self->rx_buff.data, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1937 | |
| 1938 | /* Move to next frame */ |
| 1939 | self->rx_buff.data += len; |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1940 | self->netdev->stats.rx_bytes += len; |
| 1941 | self->netdev->stats.rx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1942 | |
| 1943 | skb->dev = self->netdev; |
Arnaldo Carvalho de Melo | 459a98e | 2007-03-19 15:30:44 -0700 | [diff] [blame] | 1944 | skb_reset_mac_header(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1945 | skb->protocol = htons(ETH_P_IRDA); |
| 1946 | netif_rx(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1947 | } |
| 1948 | } |
| 1949 | |
| 1950 | switch_bank(iobase, BANK0); |
| 1951 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1952 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1953 | return TRUE; |
| 1954 | } |
| 1955 | |
| 1956 | |
| 1957 | |
| 1958 | /* |
| 1959 | * Function ali_ircc_sir_hard_xmit (skb, dev) |
| 1960 | * |
| 1961 | * Transmit the frame! |
| 1962 | * |
| 1963 | */ |
Stephen Hemminger | 6518bbb | 2009-08-31 19:50:50 +0000 | [diff] [blame] | 1964 | static netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb, |
| 1965 | struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1966 | { |
| 1967 | struct ali_ircc_cb *self; |
| 1968 | unsigned long flags; |
| 1969 | int iobase; |
| 1970 | __u32 speed; |
| 1971 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1972 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1973 | |
Patrick McHardy | ec634fe | 2009-07-05 19:23:38 -0700 | [diff] [blame] | 1974 | IRDA_ASSERT(dev != NULL, return NETDEV_TX_OK;); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 1976 | self = netdev_priv(dev); |
Patrick McHardy | ec634fe | 2009-07-05 19:23:38 -0700 | [diff] [blame] | 1977 | IRDA_ASSERT(self != NULL, return NETDEV_TX_OK;); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1978 | |
| 1979 | iobase = self->io.sir_base; |
| 1980 | |
| 1981 | netif_stop_queue(dev); |
| 1982 | |
| 1983 | /* Make sure tests *& speed change are atomic */ |
| 1984 | spin_lock_irqsave(&self->lock, flags); |
| 1985 | |
| 1986 | /* Note : you should make sure that speed changes are not going |
| 1987 | * to corrupt any outgoing frame. Look at nsc-ircc for the gory |
| 1988 | * details - Jean II */ |
| 1989 | |
| 1990 | /* Check if we need to change the speed */ |
| 1991 | speed = irda_get_next_speed(skb); |
| 1992 | if ((speed != self->io.speed) && (speed != -1)) { |
| 1993 | /* Check for empty frame */ |
| 1994 | if (!skb->len) { |
| 1995 | ali_ircc_change_speed(self, speed); |
| 1996 | dev->trans_start = jiffies; |
| 1997 | spin_unlock_irqrestore(&self->lock, flags); |
| 1998 | dev_kfree_skb(skb); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 1999 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2000 | } else |
| 2001 | self->new_speed = speed; |
| 2002 | } |
| 2003 | |
| 2004 | /* Init tx buffer */ |
| 2005 | self->tx_buff.data = self->tx_buff.head; |
| 2006 | |
| 2007 | /* Copy skb to tx_buff while wrapping, stuffing and making CRC */ |
| 2008 | self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data, |
| 2009 | self->tx_buff.truesize); |
| 2010 | |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 2011 | self->netdev->stats.tx_bytes += self->tx_buff.len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2012 | |
| 2013 | /* Turn on transmit finished interrupt. Will fire immediately! */ |
| 2014 | outb(UART_IER_THRI, iobase+UART_IER); |
| 2015 | |
| 2016 | dev->trans_start = jiffies; |
| 2017 | spin_unlock_irqrestore(&self->lock, flags); |
| 2018 | |
| 2019 | dev_kfree_skb(skb); |
| 2020 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2021 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2022 | |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 2023 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2024 | } |
| 2025 | |
| 2026 | |
| 2027 | /* |
| 2028 | * Function ali_ircc_net_ioctl (dev, rq, cmd) |
| 2029 | * |
| 2030 | * Process IOCTL commands for this device |
| 2031 | * |
| 2032 | */ |
| 2033 | static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 2034 | { |
| 2035 | struct if_irda_req *irq = (struct if_irda_req *) rq; |
| 2036 | struct ali_ircc_cb *self; |
| 2037 | unsigned long flags; |
| 2038 | int ret = 0; |
| 2039 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2040 | IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2041 | |
| 2042 | IRDA_ASSERT(dev != NULL, return -1;); |
| 2043 | |
Wang Chen | 4cf1653 | 2008-11-12 23:38:14 -0800 | [diff] [blame] | 2044 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2045 | |
| 2046 | IRDA_ASSERT(self != NULL, return -1;); |
| 2047 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2048 | 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] | 2049 | |
| 2050 | switch (cmd) { |
| 2051 | case SIOCSBANDWIDTH: /* Set bandwidth */ |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2052 | IRDA_DEBUG(1, "%s(), SIOCSBANDWIDTH\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2053 | /* |
| 2054 | * This function will also be used by IrLAP to change the |
| 2055 | * speed, so we still must allow for speed change within |
| 2056 | * interrupt context. |
| 2057 | */ |
| 2058 | if (!in_interrupt() && !capable(CAP_NET_ADMIN)) |
| 2059 | return -EPERM; |
| 2060 | |
| 2061 | spin_lock_irqsave(&self->lock, flags); |
| 2062 | ali_ircc_change_speed(self, irq->ifr_baudrate); |
| 2063 | spin_unlock_irqrestore(&self->lock, flags); |
| 2064 | break; |
| 2065 | case SIOCSMEDIABUSY: /* Set media busy */ |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2066 | IRDA_DEBUG(1, "%s(), SIOCSMEDIABUSY\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2067 | if (!capable(CAP_NET_ADMIN)) |
| 2068 | return -EPERM; |
| 2069 | irda_device_set_media_busy(self->netdev, TRUE); |
| 2070 | break; |
| 2071 | case SIOCGRECEIVING: /* Check if we are receiving right now */ |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2072 | IRDA_DEBUG(2, "%s(), SIOCGRECEIVING\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2073 | /* This is protected */ |
| 2074 | irq->ifr_receiving = ali_ircc_is_receiving(self); |
| 2075 | break; |
| 2076 | default: |
| 2077 | ret = -EOPNOTSUPP; |
| 2078 | } |
| 2079 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2080 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2081 | |
| 2082 | return ret; |
| 2083 | } |
| 2084 | |
| 2085 | /* |
| 2086 | * Function ali_ircc_is_receiving (self) |
| 2087 | * |
| 2088 | * Return TRUE is we are currently receiving a frame |
| 2089 | * |
| 2090 | */ |
| 2091 | static int ali_ircc_is_receiving(struct ali_ircc_cb *self) |
| 2092 | { |
| 2093 | unsigned long flags; |
| 2094 | int status = FALSE; |
| 2095 | int iobase; |
| 2096 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2097 | IRDA_DEBUG(2, "%s(), ---------------- Start -----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2098 | |
| 2099 | IRDA_ASSERT(self != NULL, return FALSE;); |
| 2100 | |
| 2101 | spin_lock_irqsave(&self->lock, flags); |
| 2102 | |
| 2103 | if (self->io.speed > 115200) |
| 2104 | { |
| 2105 | iobase = self->io.fir_base; |
| 2106 | |
| 2107 | switch_bank(iobase, BANK1); |
| 2108 | if((inb(iobase+FIR_FIFO_FR) & 0x3f) != 0) |
| 2109 | { |
| 2110 | /* We are receiving something */ |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2111 | IRDA_DEBUG(1, "%s(), We are receiving something\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2112 | status = TRUE; |
| 2113 | } |
| 2114 | switch_bank(iobase, BANK0); |
| 2115 | } |
| 2116 | else |
| 2117 | { |
| 2118 | status = (self->rx_buff.state != OUTSIDE_FRAME); |
| 2119 | } |
| 2120 | |
| 2121 | spin_unlock_irqrestore(&self->lock, flags); |
| 2122 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2123 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2124 | |
| 2125 | return status; |
| 2126 | } |
| 2127 | |
Samuel Ortiz | 898b1d1 | 2006-05-25 16:21:10 -0700 | [diff] [blame] | 2128 | static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2129 | { |
Samuel Ortiz | 898b1d1 | 2006-05-25 16:21:10 -0700 | [diff] [blame] | 2130 | struct ali_ircc_cb *self = platform_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2131 | |
Samuel Ortiz | 898b1d1 | 2006-05-25 16:21:10 -0700 | [diff] [blame] | 2132 | IRDA_MESSAGE("%s, Suspending\n", ALI_IRCC_DRIVER_NAME); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2133 | |
| 2134 | if (self->io.suspended) |
Samuel Ortiz | 898b1d1 | 2006-05-25 16:21:10 -0700 | [diff] [blame] | 2135 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2136 | |
| 2137 | ali_ircc_net_close(self->netdev); |
| 2138 | |
| 2139 | self->io.suspended = 1; |
| 2140 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2141 | return 0; |
| 2142 | } |
| 2143 | |
Samuel Ortiz | 898b1d1 | 2006-05-25 16:21:10 -0700 | [diff] [blame] | 2144 | static int ali_ircc_resume(struct platform_device *dev) |
| 2145 | { |
| 2146 | struct ali_ircc_cb *self = platform_get_drvdata(dev); |
| 2147 | |
| 2148 | if (!self->io.suspended) |
| 2149 | return 0; |
| 2150 | |
| 2151 | ali_ircc_net_open(self->netdev); |
| 2152 | |
| 2153 | IRDA_MESSAGE("%s, Waking up\n", ALI_IRCC_DRIVER_NAME); |
| 2154 | |
| 2155 | self->io.suspended = 0; |
| 2156 | |
| 2157 | return 0; |
| 2158 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2159 | |
| 2160 | /* ALi Chip Function */ |
| 2161 | |
| 2162 | static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable) |
| 2163 | { |
| 2164 | |
| 2165 | unsigned char newMask; |
| 2166 | |
| 2167 | int iobase = self->io.fir_base; /* or sir_base */ |
| 2168 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2169 | IRDA_DEBUG(2, "%s(), -------- Start -------- ( Enable = %d )\n", __func__ , enable); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2170 | |
| 2171 | /* Enable the interrupt which we wish to */ |
| 2172 | if (enable){ |
| 2173 | if (self->io.direction == IO_XMIT) |
| 2174 | { |
| 2175 | if (self->io.speed > 115200) /* FIR, MIR */ |
| 2176 | { |
| 2177 | newMask = self->ier; |
| 2178 | } |
| 2179 | else /* SIR */ |
| 2180 | { |
| 2181 | newMask = UART_IER_THRI | UART_IER_RDI; |
| 2182 | } |
| 2183 | } |
| 2184 | else { |
| 2185 | if (self->io.speed > 115200) /* FIR, MIR */ |
| 2186 | { |
| 2187 | newMask = self->ier; |
| 2188 | } |
| 2189 | else /* SIR */ |
| 2190 | { |
| 2191 | newMask = UART_IER_RDI; |
| 2192 | } |
| 2193 | } |
| 2194 | } |
| 2195 | else /* Disable all the interrupts */ |
| 2196 | { |
| 2197 | newMask = 0x00; |
| 2198 | |
| 2199 | } |
| 2200 | |
| 2201 | //SIR and FIR has different registers |
| 2202 | if (self->io.speed > 115200) |
| 2203 | { |
| 2204 | switch_bank(iobase, BANK0); |
| 2205 | outb(newMask, iobase+FIR_IER); |
| 2206 | } |
| 2207 | else |
| 2208 | outb(newMask, iobase+UART_IER); |
| 2209 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2210 | IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | } |
| 2212 | |
| 2213 | static void SIR2FIR(int iobase) |
| 2214 | { |
| 2215 | //unsigned char tmp; |
| 2216 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2217 | IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2218 | |
| 2219 | /* Already protected (change_speed() or setup()), no need to lock. |
| 2220 | * Jean II */ |
| 2221 | |
| 2222 | outb(0x28, iobase+UART_MCR); |
| 2223 | outb(0x68, iobase+UART_MCR); |
| 2224 | outb(0x88, iobase+UART_MCR); |
| 2225 | |
| 2226 | outb(0x60, iobase+FIR_MCR); /* Master Reset */ |
| 2227 | outb(0x20, iobase+FIR_MCR); /* Master Interrupt Enable */ |
| 2228 | |
| 2229 | //tmp = inb(iobase+FIR_LCR_B); /* SIP enable */ |
| 2230 | //tmp |= 0x20; |
| 2231 | //outb(tmp, iobase+FIR_LCR_B); |
| 2232 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2233 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2234 | } |
| 2235 | |
| 2236 | static void FIR2SIR(int iobase) |
| 2237 | { |
| 2238 | unsigned char val; |
| 2239 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2240 | IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2241 | |
| 2242 | /* Already protected (change_speed() or setup()), no need to lock. |
| 2243 | * Jean II */ |
| 2244 | |
| 2245 | outb(0x20, iobase+FIR_MCR); /* IRQ to low */ |
| 2246 | outb(0x00, iobase+UART_IER); |
| 2247 | |
| 2248 | outb(0xA0, iobase+FIR_MCR); /* Don't set master reset */ |
| 2249 | outb(0x00, iobase+UART_FCR); |
| 2250 | outb(0x07, iobase+UART_FCR); |
| 2251 | |
| 2252 | val = inb(iobase+UART_RX); |
| 2253 | val = inb(iobase+UART_LSR); |
| 2254 | val = inb(iobase+UART_MSR); |
| 2255 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2256 | IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2257 | } |
| 2258 | |
| 2259 | MODULE_AUTHOR("Benjamin Kong <benjamin_kong@ali.com.tw>"); |
| 2260 | MODULE_DESCRIPTION("ALi FIR Controller Driver"); |
| 2261 | MODULE_LICENSE("GPL"); |
Kay Sievers | 72abb46 | 2008-04-18 13:50:44 -0700 | [diff] [blame] | 2262 | MODULE_ALIAS("platform:" ALI_IRCC_DRIVER_NAME); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2263 | |
| 2264 | |
| 2265 | module_param_array(io, int, NULL, 0); |
| 2266 | MODULE_PARM_DESC(io, "Base I/O addresses"); |
| 2267 | module_param_array(irq, int, NULL, 0); |
| 2268 | MODULE_PARM_DESC(irq, "IRQ lines"); |
| 2269 | module_param_array(dma, int, NULL, 0); |
| 2270 | MODULE_PARM_DESC(dma, "DMA channels"); |
| 2271 | |
| 2272 | module_init(ali_ircc_init); |
| 2273 | module_exit(ali_ircc_cleanup); |