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