1 /*********************************************************************
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>
14 * Copyright (c) 2000 Benjamin Kong <benjamin_kong@ali.com.tw>
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.
22 ********************************************************************/
24 #include <linux/module.h>
25 #include <linux/gfp.h>
27 #include <linux/kernel.h>
28 #include <linux/types.h>
29 #include <linux/skbuff.h>
30 #include <linux/netdevice.h>
31 #include <linux/ioport.h>
32 #include <linux/delay.h>
33 #include <linux/init.h>
34 #include <linux/rtnetlink.h>
35 #include <linux/serial_reg.h>
36 #include <linux/dma-mapping.h>
37 #include <linux/platform_device.h>
41 #include <asm/byteorder.h>
43 #include <net/irda/wrapper.h>
44 #include <net/irda/irda.h>
45 #include <net/irda/irda_device.h>
49 #define CHIP_IO_EXTENT 8
50 #define BROKEN_DONGLE_ID
52 #define ALI_IRCC_DRIVER_NAME "ali-ircc"
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);
58 static struct platform_driver ali_ircc_driver = {
59 .suspend = ali_ircc_suspend,
60 .resume = ali_ircc_resume,
62 .name = ALI_IRCC_DRIVER_NAME,
67 /* Module parameters */
68 static int qos_mtt_bits = 0x07; /* 1 ms or more */
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 };
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);
79 /* These are the currently known ALi south-bridge chipsets, the only one difference
80 * is that M1543C doesn't support HP HDSL-3600
82 static ali_chip_t chips[] =
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 },
90 /* Max 4 instances for now */
91 static struct ali_ircc_cb *dev_self[] = { NULL, NULL, NULL, NULL };
94 static char *dongle_types[] = {
98 "No dongle connected",
101 /* Some prototypes */
102 static int ali_ircc_open(int i, chipio_t *info);
104 static int ali_ircc_close(struct ali_ircc_cb *self);
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);
111 static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud);
114 static netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb,
115 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);
123 static netdev_tx_t ali_ircc_fir_hard_xmit(struct sk_buff *skb,
124 struct net_device *dev);
125 static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 speed);
126 static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self);
127 static int ali_ircc_dma_receive(struct ali_ircc_cb *self);
128 static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self);
129 static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self);
130 static void ali_ircc_dma_xmit(struct ali_ircc_cb *self);
133 static int ali_ircc_read_dongle_id (int i, chipio_t *info);
134 static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed);
136 /* ALi chip function */
137 static void SIR2FIR(int iobase);
138 static void FIR2SIR(int iobase);
139 static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable);
142 * Function ali_ircc_init ()
144 * Initialize chip. Find out whay kinds of chips we are dealing with
145 * and their configuration registers address
147 static int __init ali_ircc_init(void)
156 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
158 ret = platform_driver_register(&ali_ircc_driver);
160 IRDA_ERROR("%s, Can't register driver!\n",
161 ALI_IRCC_DRIVER_NAME);
167 /* Probe for all the ALi chipsets we know about */
168 for (chip= chips; chip->name; chip++, i++)
170 IRDA_DEBUG(2, "%s(), Probing for %s ...\n", __func__, chip->name);
172 /* Try all config registers for this chip */
173 for (cfg=0; cfg<2; cfg++)
175 cfg_base = chip->cfg[cfg];
179 memset(&info, 0, sizeof(chipio_t));
180 info.cfg_base = cfg_base;
181 info.fir_base = io[i];
186 /* Enter Configuration */
187 outb(chip->entr1, cfg_base);
188 outb(chip->entr2, cfg_base);
190 /* Select Logical Device 5 Registers (UART2) */
191 outb(0x07, cfg_base);
192 outb(0x05, cfg_base+1);
194 /* Read Chip Identification Register */
195 outb(chip->cid_index, cfg_base);
196 reg = inb(cfg_base+1);
198 if (reg == chip->cid_value)
200 IRDA_DEBUG(2, "%s(), Chip found at 0x%03x\n", __func__, cfg_base);
202 outb(0x1F, cfg_base);
203 revision = inb(cfg_base+1);
204 IRDA_DEBUG(2, "%s(), Found %s chip, revision=%d\n", __func__,
205 chip->name, revision);
208 * If the user supplies the base address, then
209 * we init the chip, if not we probe the values
214 chip->init(chip, &info);
218 chip->probe(chip, &info);
221 if (ali_ircc_open(i, &info) == 0)
227 IRDA_DEBUG(2, "%s(), No %s chip at 0x%03x\n", __func__, chip->name, cfg_base);
229 /* Exit configuration */
230 outb(0xbb, cfg_base);
234 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
237 platform_driver_unregister(&ali_ircc_driver);
243 * Function ali_ircc_cleanup ()
245 * Close all configured chips
248 static void __exit ali_ircc_cleanup(void)
252 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
254 for (i=0; i < ARRAY_SIZE(dev_self); i++) {
256 ali_ircc_close(dev_self[i]);
259 platform_driver_unregister(&ali_ircc_driver);
261 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
264 static const struct net_device_ops ali_ircc_sir_ops = {
265 .ndo_open = ali_ircc_net_open,
266 .ndo_stop = ali_ircc_net_close,
267 .ndo_start_xmit = ali_ircc_sir_hard_xmit,
268 .ndo_do_ioctl = ali_ircc_net_ioctl,
271 static const struct net_device_ops ali_ircc_fir_ops = {
272 .ndo_open = ali_ircc_net_open,
273 .ndo_stop = ali_ircc_net_close,
274 .ndo_start_xmit = ali_ircc_fir_hard_xmit,
275 .ndo_do_ioctl = ali_ircc_net_ioctl,
279 * Function ali_ircc_open (int i, chipio_t *inf)
281 * Open driver instance
284 static int ali_ircc_open(int i, chipio_t *info)
286 struct net_device *dev;
287 struct ali_ircc_cb *self;
291 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
293 if (i >= ARRAY_SIZE(dev_self)) {
294 IRDA_ERROR("%s(), maximum number of supported chips reached!\n",
299 /* Set FIR FIFO and DMA Threshold */
300 if ((ali_ircc_setup(info)) == -1)
303 dev = alloc_irdadev(sizeof(*self));
305 IRDA_ERROR("%s(), can't allocate memory for control block!\n",
310 self = netdev_priv(dev);
312 spin_lock_init(&self->lock);
314 /* Need to store self somewhere */
319 self->io.cfg_base = info->cfg_base; /* In ali_ircc_probe_53 assign */
320 self->io.fir_base = info->fir_base; /* info->sir_base = info->fir_base */
321 self->io.sir_base = info->sir_base; /* ALi SIR and FIR use the same address */
322 self->io.irq = info->irq;
323 self->io.fir_ext = CHIP_IO_EXTENT;
324 self->io.dma = info->dma;
325 self->io.fifo_size = 16; /* SIR: 16, FIR: 32 Benjamin 2000/11/1 */
327 /* Reserve the ioports that we need */
328 if (!request_region(self->io.fir_base, self->io.fir_ext,
329 ALI_IRCC_DRIVER_NAME)) {
330 IRDA_WARNING("%s(), can't get iobase of 0x%03x\n", __func__,
336 /* Initialize QoS for this device */
337 irda_init_max_qos_capabilies(&self->qos);
339 /* The only value we must override it the baudrate */
340 self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
341 IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); // benjamin 2000/11/8 05:27PM
343 self->qos.min_turn_time.bits = qos_mtt_bits;
345 irda_qos_bits_to_value(&self->qos);
347 /* Max DMA buffer size needed = (data_size + 6) * (window_size) + 6; */
348 self->rx_buff.truesize = 14384;
349 self->tx_buff.truesize = 14384;
351 /* Allocate memory if needed */
353 dma_alloc_coherent(NULL, self->rx_buff.truesize,
354 &self->rx_buff_dma, GFP_KERNEL);
355 if (self->rx_buff.head == NULL) {
359 memset(self->rx_buff.head, 0, self->rx_buff.truesize);
362 dma_alloc_coherent(NULL, self->tx_buff.truesize,
363 &self->tx_buff_dma, GFP_KERNEL);
364 if (self->tx_buff.head == NULL) {
368 memset(self->tx_buff.head, 0, self->tx_buff.truesize);
370 self->rx_buff.in_frame = FALSE;
371 self->rx_buff.state = OUTSIDE_FRAME;
372 self->tx_buff.data = self->tx_buff.head;
373 self->rx_buff.data = self->rx_buff.head;
375 /* Reset Tx queue info */
376 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
377 self->tx_fifo.tail = self->tx_buff.head;
379 /* Override the network functions we need to use */
380 dev->netdev_ops = &ali_ircc_sir_ops;
382 err = register_netdev(dev);
384 IRDA_ERROR("%s(), register_netdev() failed!\n", __func__);
387 IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name);
389 /* Check dongle id */
390 dongle_id = ali_ircc_read_dongle_id(i, info);
391 IRDA_MESSAGE("%s(), %s, Found dongle: %s\n", __func__,
392 ALI_IRCC_DRIVER_NAME, dongle_types[dongle_id]);
394 self->io.dongle_id = dongle_id;
396 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
401 dma_free_coherent(NULL, self->tx_buff.truesize,
402 self->tx_buff.head, self->tx_buff_dma);
404 dma_free_coherent(NULL, self->rx_buff.truesize,
405 self->rx_buff.head, self->rx_buff_dma);
407 release_region(self->io.fir_base, self->io.fir_ext);
416 * Function ali_ircc_close (self)
418 * Close driver instance
421 static int __exit ali_ircc_close(struct ali_ircc_cb *self)
425 IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __func__);
427 IRDA_ASSERT(self != NULL, return -1;);
429 iobase = self->io.fir_base;
431 /* Remove netdevice */
432 unregister_netdev(self->netdev);
434 /* Release the PORT that this driver is using */
435 IRDA_DEBUG(4, "%s(), Releasing Region %03x\n", __func__, self->io.fir_base);
436 release_region(self->io.fir_base, self->io.fir_ext);
438 if (self->tx_buff.head)
439 dma_free_coherent(NULL, self->tx_buff.truesize,
440 self->tx_buff.head, self->tx_buff_dma);
442 if (self->rx_buff.head)
443 dma_free_coherent(NULL, self->rx_buff.truesize,
444 self->rx_buff.head, self->rx_buff_dma);
446 dev_self[self->index] = NULL;
447 free_netdev(self->netdev);
449 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
455 * Function ali_ircc_init_43 (chip, info)
457 * Initialize the ALi M1543 chip.
459 static int ali_ircc_init_43(ali_chip_t *chip, chipio_t *info)
461 /* All controller information like I/O address, DMA channel, IRQ
469 * Function ali_ircc_init_53 (chip, info)
471 * Initialize the ALi M1535 chip.
473 static int ali_ircc_init_53(ali_chip_t *chip, chipio_t *info)
475 /* All controller information like I/O address, DMA channel, IRQ
483 * Function ali_ircc_probe_53 (chip, info)
485 * Probes for the ALi M1535D or M1535
487 static int ali_ircc_probe_53(ali_chip_t *chip, chipio_t *info)
489 int cfg_base = info->cfg_base;
492 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
494 /* Enter Configuration */
495 outb(chip->entr1, cfg_base);
496 outb(chip->entr2, cfg_base);
498 /* Select Logical Device 5 Registers (UART2) */
499 outb(0x07, cfg_base);
500 outb(0x05, cfg_base+1);
502 /* Read address control register */
503 outb(0x60, cfg_base);
504 hi = inb(cfg_base+1);
505 outb(0x61, cfg_base);
506 low = inb(cfg_base+1);
507 info->fir_base = (hi<<8) + low;
509 info->sir_base = info->fir_base;
511 IRDA_DEBUG(2, "%s(), probing fir_base=0x%03x\n", __func__, info->fir_base);
513 /* Read IRQ control register */
514 outb(0x70, cfg_base);
515 reg = inb(cfg_base+1);
516 info->irq = reg & 0x0f;
517 IRDA_DEBUG(2, "%s(), probing irq=%d\n", __func__, info->irq);
519 /* Read DMA channel */
520 outb(0x74, cfg_base);
521 reg = inb(cfg_base+1);
522 info->dma = reg & 0x07;
524 if(info->dma == 0x04)
525 IRDA_WARNING("%s(), No DMA channel assigned !\n", __func__);
527 IRDA_DEBUG(2, "%s(), probing dma=%d\n", __func__, info->dma);
529 /* Read Enabled Status */
530 outb(0x30, cfg_base);
531 reg = inb(cfg_base+1);
532 info->enabled = (reg & 0x80) && (reg & 0x01);
533 IRDA_DEBUG(2, "%s(), probing enabled=%d\n", __func__, info->enabled);
535 /* Read Power Status */
536 outb(0x22, cfg_base);
537 reg = inb(cfg_base+1);
538 info->suspended = (reg & 0x20);
539 IRDA_DEBUG(2, "%s(), probing suspended=%d\n", __func__, info->suspended);
541 /* Exit configuration */
542 outb(0xbb, cfg_base);
544 IRDA_DEBUG(2, "%s(), ----------------- End -----------------\n", __func__);
550 * Function ali_ircc_setup (info)
552 * Set FIR FIFO and DMA Threshold
553 * Returns non-negative on success.
556 static int ali_ircc_setup(chipio_t *info)
560 int iobase = info->fir_base;
562 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
564 /* Locking comments :
565 * Most operations here need to be protected. We are called before
566 * the device instance is created in ali_ircc_open(), therefore
567 * nobody can bother us - Jean II */
569 /* Switch to FIR space */
573 outb(0x40, iobase+FIR_MCR); // benjamin 2000/11/30 11:45AM
575 /* Read FIR ID Version Register */
576 switch_bank(iobase, BANK3);
577 version = inb(iobase+FIR_ID_VR);
579 /* Should be 0x00 in the M1535/M1535D */
582 IRDA_ERROR("%s, Wrong chip version %02x\n",
583 ALI_IRCC_DRIVER_NAME, version);
587 /* Set FIR FIFO Threshold Register */
588 switch_bank(iobase, BANK1);
589 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
591 /* Set FIR DMA Threshold Register */
592 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
595 switch_bank(iobase, BANK2);
596 outb(inb(iobase+FIR_IRDA_CR) | IRDA_CR_CRC, iobase+FIR_IRDA_CR);
598 /* NDIS driver set TX Length here BANK2 Alias 3, Alias4*/
600 /* Switch to Bank 0 */
601 switch_bank(iobase, BANK0);
603 tmp = inb(iobase+FIR_LCR_B);
604 tmp &=~0x20; // disable SIP
605 tmp |= 0x80; // these two steps make RX mode
607 outb(tmp, iobase+FIR_LCR_B);
609 /* Disable Interrupt */
610 outb(0x00, iobase+FIR_IER);
613 /* Switch to SIR space */
616 IRDA_MESSAGE("%s, driver loaded (Benjamin Kong)\n",
617 ALI_IRCC_DRIVER_NAME);
619 /* Enable receive interrupts */
620 // outb(UART_IER_RDI, iobase+UART_IER); //benjamin 2000/11/23 01:25PM
621 // Turn on the interrupts in ali_ircc_net_open
623 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
629 * Function ali_ircc_read_dongle_id (int index, info)
631 * Try to read dongle indentification. This procedure needs to be executed
632 * once after power-on/reset. It also needs to be used whenever you suspect
633 * that the user may have plugged/unplugged the IrDA Dongle.
635 static int ali_ircc_read_dongle_id (int i, chipio_t *info)
638 int cfg_base = info->cfg_base;
640 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
642 /* Enter Configuration */
643 outb(chips[i].entr1, cfg_base);
644 outb(chips[i].entr2, cfg_base);
646 /* Select Logical Device 5 Registers (UART2) */
647 outb(0x07, cfg_base);
648 outb(0x05, cfg_base+1);
651 outb(0xf0, cfg_base);
652 reg = inb(cfg_base+1);
653 dongle_id = ((reg>>6)&0x02) | ((reg>>5)&0x01);
654 IRDA_DEBUG(2, "%s(), probing dongle_id=%d, dongle_types=%s\n", __func__,
655 dongle_id, dongle_types[dongle_id]);
657 /* Exit configuration */
658 outb(0xbb, cfg_base);
660 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
666 * Function ali_ircc_interrupt (irq, dev_id, regs)
668 * An interrupt from the chip has arrived. Time to do some work
671 static irqreturn_t ali_ircc_interrupt(int irq, void *dev_id)
673 struct net_device *dev = dev_id;
674 struct ali_ircc_cb *self;
677 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
679 self = netdev_priv(dev);
681 spin_lock(&self->lock);
683 /* Dispatch interrupt handler for the current speed */
684 if (self->io.speed > 115200)
685 ret = ali_ircc_fir_interrupt(self);
687 ret = ali_ircc_sir_interrupt(self);
689 spin_unlock(&self->lock);
691 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
695 * Function ali_ircc_fir_interrupt(irq, struct ali_ircc_cb *self)
697 * Handle MIR/FIR interrupt
700 static irqreturn_t ali_ircc_fir_interrupt(struct ali_ircc_cb *self)
702 __u8 eir, OldMessageCount;
705 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__);
707 iobase = self->io.fir_base;
709 switch_bank(iobase, BANK0);
710 self->InterruptID = inb(iobase+FIR_IIR);
711 self->BusStatus = inb(iobase+FIR_BSR);
713 OldMessageCount = (self->LineStatus + 1) & 0x07;
714 self->LineStatus = inb(iobase+FIR_LSR);
715 //self->ier = inb(iobase+FIR_IER); 2000/12/1 04:32PM
716 eir = self->InterruptID & self->ier; /* Mask out the interesting ones */
718 IRDA_DEBUG(1, "%s(), self->InterruptID = %x\n", __func__,self->InterruptID);
719 IRDA_DEBUG(1, "%s(), self->LineStatus = %x\n", __func__,self->LineStatus);
720 IRDA_DEBUG(1, "%s(), self->ier = %x\n", __func__,self->ier);
721 IRDA_DEBUG(1, "%s(), eir = %x\n", __func__,eir);
723 /* Disable interrupts */
724 SetCOMInterrupts(self, FALSE);
726 /* Tx or Rx Interrupt */
730 if (self->io.direction == IO_XMIT) /* TX */
732 IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Tx) *******\n", __func__);
734 if(ali_ircc_dma_xmit_complete(self))
736 if (irda_device_txqueue_empty(self->netdev))
738 /* Prepare for receive */
739 ali_ircc_dma_receive(self);
751 IRDA_DEBUG(1, "%s(), ******* IIR_EOM (Rx) *******\n", __func__);
753 if(OldMessageCount > ((self->LineStatus+1) & 0x07))
755 self->rcvFramesOverflow = TRUE;
756 IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE ********\n", __func__);
759 if (ali_ircc_dma_receive_complete(self))
761 IRDA_DEBUG(1, "%s(), ******* receive complete ********\n", __func__);
767 IRDA_DEBUG(1, "%s(), ******* Not receive complete ********\n", __func__);
769 self->ier = IER_EOM | IER_TIMER;
774 /* Timer Interrupt */
775 else if (eir & IIR_TIMER)
777 if(OldMessageCount > ((self->LineStatus+1) & 0x07))
779 self->rcvFramesOverflow = TRUE;
780 IRDA_DEBUG(1, "%s(), ******* self->rcvFramesOverflow = TRUE *******\n", __func__);
783 switch_bank(iobase, BANK1);
784 tmp = inb(iobase+FIR_CR);
785 outb( tmp& ~CR_TIMER_EN, iobase+FIR_CR);
787 /* Check if this is a Tx timer interrupt */
788 if (self->io.direction == IO_XMIT)
790 ali_ircc_dma_xmit(self);
792 /* Interrupt on EOM */
798 if(ali_ircc_dma_receive_complete(self))
804 self->ier = IER_EOM | IER_TIMER;
809 /* Restore Interrupt */
810 SetCOMInterrupts(self, TRUE);
812 IRDA_DEBUG(1, "%s(), ----------------- End ---------------\n", __func__);
813 return IRQ_RETVAL(eir);
817 * Function ali_ircc_sir_interrupt (irq, self, eir)
819 * Handle SIR interrupt
822 static irqreturn_t ali_ircc_sir_interrupt(struct ali_ircc_cb *self)
827 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
829 iobase = self->io.sir_base;
831 iir = inb(iobase+UART_IIR) & UART_IIR_ID;
833 /* Clear interrupt */
834 lsr = inb(iobase+UART_LSR);
836 IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", __func__,
842 IRDA_DEBUG(2, "%s(), RLSI\n", __func__);
845 /* Receive interrupt */
846 ali_ircc_sir_receive(self);
849 if (lsr & UART_LSR_THRE)
851 /* Transmitter ready for data */
852 ali_ircc_sir_write_wakeup(self);
856 IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n", __func__, iir);
863 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__);
865 return IRQ_RETVAL(iir);
870 * Function ali_ircc_sir_receive (self)
872 * Receive one frame from the infrared port
875 static void ali_ircc_sir_receive(struct ali_ircc_cb *self)
880 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__);
881 IRDA_ASSERT(self != NULL, return;);
883 iobase = self->io.sir_base;
886 * Receive all characters in Rx FIFO, unwrap and unstuff them.
887 * async_unwrap_char will deliver all found frames
890 async_unwrap_char(self->netdev, &self->netdev->stats, &self->rx_buff,
891 inb(iobase+UART_RX));
893 /* Make sure we don't stay here too long */
894 if (boguscount++ > 32) {
895 IRDA_DEBUG(2,"%s(), breaking!\n", __func__);
898 } while (inb(iobase+UART_LSR) & UART_LSR_DR);
900 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
904 * Function ali_ircc_sir_write_wakeup (tty)
906 * Called by the driver when there's room for more data. If we have
907 * more packets to send, we send them here.
910 static void ali_ircc_sir_write_wakeup(struct ali_ircc_cb *self)
915 IRDA_ASSERT(self != NULL, return;);
917 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
919 iobase = self->io.sir_base;
921 /* Finished with frame? */
922 if (self->tx_buff.len > 0)
924 /* Write data left in transmit buffer */
925 actual = ali_ircc_sir_write(iobase, self->io.fifo_size,
926 self->tx_buff.data, self->tx_buff.len);
927 self->tx_buff.data += actual;
928 self->tx_buff.len -= actual;
934 /* We must wait until all data are gone */
935 while(!(inb(iobase+UART_LSR) & UART_LSR_TEMT))
936 IRDA_DEBUG(1, "%s(), UART_LSR_THRE\n", __func__ );
938 IRDA_DEBUG(1, "%s(), Changing speed! self->new_speed = %d\n", __func__ , self->new_speed);
939 ali_ircc_change_speed(self, self->new_speed);
942 // benjamin 2000/11/10 06:32PM
943 if (self->io.speed > 115200)
945 IRDA_DEBUG(2, "%s(), ali_ircc_change_speed from UART_LSR_TEMT\n", __func__ );
948 // SetCOMInterrupts(self, TRUE);
954 netif_wake_queue(self->netdev);
957 self->netdev->stats.tx_packets++;
959 /* Turn on receive interrupts */
960 outb(UART_IER_RDI, iobase+UART_IER);
963 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
966 static void ali_ircc_change_speed(struct ali_ircc_cb *self, __u32 baud)
968 struct net_device *dev = self->netdev;
971 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
973 IRDA_DEBUG(2, "%s(), setting speed = %d\n", __func__ , baud);
975 /* This function *must* be called with irq off and spin-lock.
978 iobase = self->io.fir_base;
980 SetCOMInterrupts(self, FALSE); // 2000/11/24 11:43AM
982 /* Go to MIR, FIR Speed */
987 ali_ircc_fir_change_speed(self, baud);
989 /* Install FIR xmit handler*/
990 dev->netdev_ops = &ali_ircc_fir_ops;
992 /* Enable Interuupt */
993 self->ier = IER_EOM; // benjamin 2000/11/20 07:24PM
995 /* Be ready for incomming frames */
996 ali_ircc_dma_receive(self); // benajmin 2000/11/8 07:46PM not complete
998 /* Go to SIR Speed */
1001 ali_ircc_sir_change_speed(self, baud);
1003 /* Install SIR xmit handler*/
1004 dev->netdev_ops = &ali_ircc_sir_ops;
1008 SetCOMInterrupts(self, TRUE); // 2000/11/24 11:43AM
1010 netif_wake_queue(self->netdev);
1012 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
1015 static void ali_ircc_fir_change_speed(struct ali_ircc_cb *priv, __u32 baud)
1019 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
1020 struct net_device *dev;
1022 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
1024 IRDA_ASSERT(self != NULL, return;);
1027 iobase = self->io.fir_base;
1029 IRDA_DEBUG(1, "%s(), self->io.speed = %d, change to speed = %d\n", __func__ ,self->io.speed,baud);
1031 /* Come from SIR speed */
1032 if(self->io.speed <=115200)
1037 /* Update accounting for new speed */
1038 self->io.speed = baud;
1040 // Set Dongle Speed mode
1041 ali_ircc_change_dongle_speed(self, baud);
1043 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1047 * Function ali_sir_change_speed (self, speed)
1049 * Set speed of IrDA port to specified baudrate
1052 static void ali_ircc_sir_change_speed(struct ali_ircc_cb *priv, __u32 speed)
1054 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
1055 unsigned long flags;
1057 int fcr; /* FIFO control reg */
1058 int lcr; /* Line control reg */
1061 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
1063 IRDA_DEBUG(1, "%s(), Setting speed to: %d\n", __func__ , speed);
1065 IRDA_ASSERT(self != NULL, return;);
1067 iobase = self->io.sir_base;
1069 /* Come from MIR or FIR speed */
1070 if(self->io.speed >115200)
1072 // Set Dongle Speed mode first
1073 ali_ircc_change_dongle_speed(self, speed);
1078 // Clear Line and Auxiluary status registers 2000/11/24 11:47AM
1080 inb(iobase+UART_LSR);
1081 inb(iobase+UART_SCR);
1083 /* Update accounting for new speed */
1084 self->io.speed = speed;
1086 spin_lock_irqsave(&self->lock, flags);
1088 divisor = 115200/speed;
1090 fcr = UART_FCR_ENABLE_FIFO;
1093 * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and
1094 * almost 1,7 ms at 19200 bps. At speeds above that we can just forget
1095 * about this timeout since it will always be fast enough.
1097 if (self->io.speed < 38400)
1098 fcr |= UART_FCR_TRIGGER_1;
1100 fcr |= UART_FCR_TRIGGER_14;
1102 /* IrDA ports use 8N1 */
1103 lcr = UART_LCR_WLEN8;
1105 outb(UART_LCR_DLAB | lcr, iobase+UART_LCR); /* Set DLAB */
1106 outb(divisor & 0xff, iobase+UART_DLL); /* Set speed */
1107 outb(divisor >> 8, iobase+UART_DLM);
1108 outb(lcr, iobase+UART_LCR); /* Set 8N1 */
1109 outb(fcr, iobase+UART_FCR); /* Enable FIFO's */
1111 /* without this, the connection will be broken after come back from FIR speed,
1112 but with this, the SIR connection is harder to established */
1113 outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase+UART_MCR);
1115 spin_unlock_irqrestore(&self->lock, flags);
1117 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1120 static void ali_ircc_change_dongle_speed(struct ali_ircc_cb *priv, int speed)
1123 struct ali_ircc_cb *self = (struct ali_ircc_cb *) priv;
1124 int iobase,dongle_id;
1127 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
1129 iobase = self->io.fir_base; /* or iobase = self->io.sir_base; */
1130 dongle_id = self->io.dongle_id;
1132 /* We are already locked, no need to do it again */
1134 IRDA_DEBUG(1, "%s(), Set Speed for %s , Speed = %d\n", __func__ , dongle_types[dongle_id], speed);
1136 switch_bank(iobase, BANK2);
1137 tmp = inb(iobase+FIR_IRDA_CR);
1139 /* IBM type dongle */
1142 if(speed == 4000000)
1145 // SD/MODE __| |__ __
1150 tmp &= ~IRDA_CR_HDLC; // HDLC=0
1151 tmp |= IRDA_CR_CRC; // CRC=1
1153 switch_bank(iobase, BANK2);
1154 outb(tmp, iobase+FIR_IRDA_CR);
1156 // T1 -> SD/MODE:0 IRTX:0
1159 outb(tmp, iobase+FIR_IRDA_CR);
1162 // T2 -> SD/MODE:1 IRTX:0
1165 outb(tmp, iobase+FIR_IRDA_CR);
1168 // T3 -> SD/MODE:1 IRTX:1
1170 outb(tmp, iobase+FIR_IRDA_CR);
1173 // T4 -> SD/MODE:0 IRTX:1
1176 outb(tmp, iobase+FIR_IRDA_CR);
1179 // T5 -> SD/MODE:0 IRTX:0
1182 outb(tmp, iobase+FIR_IRDA_CR);
1185 // reset -> Normal TX output Signal
1186 outb(tmp & ~0x02, iobase+FIR_IRDA_CR);
1188 else /* speed <=1152000 */
1196 /* MIR 115200, 57600 */
1199 tmp |= 0xA0; //HDLC=1, 1.152Mbps=1
1203 tmp &=~0x80; //HDLC 0.576Mbps
1204 tmp |= 0x20; //HDLC=1,
1207 tmp |= IRDA_CR_CRC; // CRC=1
1209 switch_bank(iobase, BANK2);
1210 outb(tmp, iobase+FIR_IRDA_CR);
1212 /* MIR 115200, 57600 */
1214 //switch_bank(iobase, BANK2);
1215 // T1 -> SD/MODE:0 IRTX:0
1218 outb(tmp, iobase+FIR_IRDA_CR);
1221 // T2 -> SD/MODE:1 IRTX:0
1224 outb(tmp, iobase+FIR_IRDA_CR);
1226 // T3 -> SD/MODE:0 IRTX:0
1229 outb(tmp, iobase+FIR_IRDA_CR);
1232 // reset -> Normal TX output Signal
1233 outb(tmp & ~0x02, iobase+FIR_IRDA_CR);
1236 else if (dongle_id == 1) /* HP HDSL-3600 */
1241 tmp &= ~IRDA_CR_HDLC; // HDLC=0
1245 tmp |= 0xA0; // HDLC=1, 1.152Mbps=1
1249 tmp &=~0x80; // HDLC 0.576Mbps
1250 tmp |= 0x20; // HDLC=1,
1254 tmp |= IRDA_CR_CRC; // CRC=1
1256 switch_bank(iobase, BANK2);
1257 outb(tmp, iobase+FIR_IRDA_CR);
1259 else /* HP HDSL-1100 */
1261 if(speed <= 115200) /* SIR */
1264 tmp &= ~IRDA_CR_FIR_SIN; // HP sin select = 0
1266 switch_bank(iobase, BANK2);
1267 outb(tmp, iobase+FIR_IRDA_CR);
1275 tmp &= ~IRDA_CR_HDLC; // HDLC=0
1279 tmp |= 0xA0; // HDLC=1, 1.152Mbps=1
1283 tmp &=~0x80; // HDLC 0.576Mbps
1284 tmp |= 0x20; // HDLC=1,
1288 tmp |= IRDA_CR_CRC; // CRC=1
1289 tmp |= IRDA_CR_FIR_SIN; // HP sin select = 1
1291 switch_bank(iobase, BANK2);
1292 outb(tmp, iobase+FIR_IRDA_CR);
1296 switch_bank(iobase, BANK0);
1298 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1302 * Function ali_ircc_sir_write (driver)
1304 * Fill Tx FIFO with transmit data
1307 static int ali_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len)
1311 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
1313 /* Tx FIFO should be empty! */
1314 if (!(inb(iobase+UART_LSR) & UART_LSR_THRE)) {
1315 IRDA_DEBUG(0, "%s(), failed, fifo not empty!\n", __func__ );
1319 /* Fill FIFO with current frame */
1320 while ((fifo_size-- > 0) && (actual < len)) {
1321 /* Transmit next byte */
1322 outb(buf[actual], iobase+UART_TX);
1327 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
1332 * Function ali_ircc_net_open (dev)
1337 static int ali_ircc_net_open(struct net_device *dev)
1339 struct ali_ircc_cb *self;
1343 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
1345 IRDA_ASSERT(dev != NULL, return -1;);
1347 self = netdev_priv(dev);
1349 IRDA_ASSERT(self != NULL, return 0;);
1351 iobase = self->io.fir_base;
1353 /* Request IRQ and install Interrupt Handler */
1354 if (request_irq(self->io.irq, ali_ircc_interrupt, 0, dev->name, dev))
1356 IRDA_WARNING("%s, unable to allocate irq=%d\n",
1357 ALI_IRCC_DRIVER_NAME,
1363 * Always allocate the DMA channel after the IRQ, and clean up on
1366 if (request_dma(self->io.dma, dev->name)) {
1367 IRDA_WARNING("%s, unable to allocate dma=%d\n",
1368 ALI_IRCC_DRIVER_NAME,
1370 free_irq(self->io.irq, self);
1374 /* Turn on interrups */
1375 outb(UART_IER_RDI , iobase+UART_IER);
1377 /* Ready to play! */
1378 netif_start_queue(dev); //benjamin by irport
1380 /* Give self a hardware name */
1381 sprintf(hwname, "ALI-FIR @ 0x%03x", self->io.fir_base);
1384 * Open new IrLAP layer instance, now that everything should be
1385 * initialized properly
1387 self->irlap = irlap_open(dev, &self->qos, hwname);
1389 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
1395 * Function ali_ircc_net_close (dev)
1400 static int ali_ircc_net_close(struct net_device *dev)
1403 struct ali_ircc_cb *self;
1406 IRDA_DEBUG(4, "%s(), ---------------- Start ----------------\n", __func__ );
1408 IRDA_ASSERT(dev != NULL, return -1;);
1410 self = netdev_priv(dev);
1411 IRDA_ASSERT(self != NULL, return 0;);
1414 netif_stop_queue(dev);
1416 /* Stop and remove instance of IrLAP */
1418 irlap_close(self->irlap);
1421 disable_dma(self->io.dma);
1423 /* Disable interrupts */
1424 SetCOMInterrupts(self, FALSE);
1426 free_irq(self->io.irq, dev);
1427 free_dma(self->io.dma);
1429 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
1435 * Function ali_ircc_fir_hard_xmit (skb, dev)
1437 * Transmit the frame
1440 static netdev_tx_t ali_ircc_fir_hard_xmit(struct sk_buff *skb,
1441 struct net_device *dev)
1443 struct ali_ircc_cb *self;
1444 unsigned long flags;
1449 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1451 self = netdev_priv(dev);
1452 iobase = self->io.fir_base;
1454 netif_stop_queue(dev);
1456 /* Make sure tests *& speed change are atomic */
1457 spin_lock_irqsave(&self->lock, flags);
1459 /* Note : you should make sure that speed changes are not going
1460 * to corrupt any outgoing frame. Look at nsc-ircc for the gory
1461 * details - Jean II */
1463 /* Check if we need to change the speed */
1464 speed = irda_get_next_speed(skb);
1465 if ((speed != self->io.speed) && (speed != -1)) {
1466 /* Check for empty frame */
1468 ali_ircc_change_speed(self, speed);
1469 dev->trans_start = jiffies;
1470 spin_unlock_irqrestore(&self->lock, flags);
1472 return NETDEV_TX_OK;
1474 self->new_speed = speed;
1477 /* Register and copy this frame to DMA memory */
1478 self->tx_fifo.queue[self->tx_fifo.free].start = self->tx_fifo.tail;
1479 self->tx_fifo.queue[self->tx_fifo.free].len = skb->len;
1480 self->tx_fifo.tail += skb->len;
1482 dev->stats.tx_bytes += skb->len;
1484 skb_copy_from_linear_data(skb, self->tx_fifo.queue[self->tx_fifo.free].start,
1486 self->tx_fifo.len++;
1487 self->tx_fifo.free++;
1489 /* Start transmit only if there is currently no transmit going on */
1490 if (self->tx_fifo.len == 1)
1492 /* Check if we must wait the min turn time or not */
1493 mtt = irda_get_mtt(skb);
1497 /* Check how much time we have used already */
1498 do_gettimeofday(&self->now);
1500 diff = self->now.tv_usec - self->stamp.tv_usec;
1501 /* self->stamp is set from ali_ircc_dma_receive_complete() */
1503 IRDA_DEBUG(1, "%s(), ******* diff = %d *******\n", __func__ , diff);
1508 /* Check if the mtt is larger than the time we have
1509 * already used by all the protocol processing
1516 * Use timer if delay larger than 1000 us, and
1517 * use udelay for smaller values which should
1522 /* Adjust for timer resolution */
1523 mtt = (mtt+250) / 500; /* 4 discard, 5 get advanced, Let's round off */
1525 IRDA_DEBUG(1, "%s(), ************** mtt = %d ***********\n", __func__ , mtt);
1528 if (mtt == 1) /* 500 us */
1530 switch_bank(iobase, BANK1);
1531 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR);
1533 else if (mtt == 2) /* 1 ms */
1535 switch_bank(iobase, BANK1);
1536 outb(TIMER_IIR_1ms, iobase+FIR_TIMER_IIR);
1538 else /* > 2ms -> 4ms */
1540 switch_bank(iobase, BANK1);
1541 outb(TIMER_IIR_2ms, iobase+FIR_TIMER_IIR);
1546 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
1547 self->io.direction = IO_XMIT;
1549 /* Enable timer interrupt */
1550 self->ier = IER_TIMER;
1551 SetCOMInterrupts(self, TRUE);
1553 /* Timer will take care of the rest */
1558 } // if (if (mtt > diff)
1561 /* Enable EOM interrupt */
1562 self->ier = IER_EOM;
1563 SetCOMInterrupts(self, TRUE);
1565 /* Transmit frame */
1566 ali_ircc_dma_xmit(self);
1567 } // if (self->tx_fifo.len == 1)
1571 /* Not busy transmitting anymore if window is not full */
1572 if (self->tx_fifo.free < MAX_TX_WINDOW)
1573 netif_wake_queue(self->netdev);
1575 /* Restore bank register */
1576 switch_bank(iobase, BANK0);
1578 dev->trans_start = jiffies;
1579 spin_unlock_irqrestore(&self->lock, flags);
1582 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1583 return NETDEV_TX_OK;
1587 static void ali_ircc_dma_xmit(struct ali_ircc_cb *self)
1590 unsigned char FIFO_OPTI, Hi, Lo;
1593 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1595 iobase = self->io.fir_base;
1597 /* FIFO threshold , this method comes from NDIS5 code */
1599 if(self->tx_fifo.queue[self->tx_fifo.ptr].len < TX_FIFO_Threshold)
1600 FIFO_OPTI = self->tx_fifo.queue[self->tx_fifo.ptr].len-1;
1602 FIFO_OPTI = TX_FIFO_Threshold;
1605 switch_bank(iobase, BANK1);
1606 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1608 self->io.direction = IO_XMIT;
1610 irda_setup_dma(self->io.dma,
1611 ((u8 *)self->tx_fifo.queue[self->tx_fifo.ptr].start -
1612 self->tx_buff.head) + self->tx_buff_dma,
1613 self->tx_fifo.queue[self->tx_fifo.ptr].len,
1617 switch_bank(iobase, BANK0);
1618 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A);
1620 /* Set Tx FIFO threshold */
1621 if (self->fifo_opti_buf!=FIFO_OPTI)
1623 switch_bank(iobase, BANK1);
1624 outb(FIFO_OPTI, iobase+FIR_FIFO_TR) ;
1625 self->fifo_opti_buf=FIFO_OPTI;
1628 /* Set Tx DMA threshold */
1629 switch_bank(iobase, BANK1);
1630 outb(TX_DMA_Threshold, iobase+FIR_DMA_TR);
1632 /* Set max Tx frame size */
1633 Hi = (self->tx_fifo.queue[self->tx_fifo.ptr].len >> 8) & 0x0f;
1634 Lo = self->tx_fifo.queue[self->tx_fifo.ptr].len & 0xff;
1635 switch_bank(iobase, BANK2);
1636 outb(Hi, iobase+FIR_TX_DSR_HI);
1637 outb(Lo, iobase+FIR_TX_DSR_LO);
1639 /* Disable SIP , Disable Brick Wall (we don't support in TX mode), Change to TX mode */
1640 switch_bank(iobase, BANK0);
1641 tmp = inb(iobase+FIR_LCR_B);
1642 tmp &= ~0x20; // Disable SIP
1643 outb(((unsigned char)(tmp & 0x3f) | LCR_B_TX_MODE) & ~LCR_B_BW, iobase+FIR_LCR_B);
1644 IRDA_DEBUG(1, "%s(), *** Change to TX mode: FIR_LCR_B = 0x%x ***\n", __func__ , inb(iobase+FIR_LCR_B));
1646 outb(0, iobase+FIR_LSR);
1648 /* Enable DMA and Burst Mode */
1649 switch_bank(iobase, BANK1);
1650 outb(inb(iobase+FIR_CR) | CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
1652 switch_bank(iobase, BANK0);
1654 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1657 static int ali_ircc_dma_xmit_complete(struct ali_ircc_cb *self)
1662 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1664 iobase = self->io.fir_base;
1667 switch_bank(iobase, BANK1);
1668 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1670 /* Check for underrun! */
1671 switch_bank(iobase, BANK0);
1672 if((inb(iobase+FIR_LSR) & LSR_FRAME_ABORT) == LSR_FRAME_ABORT)
1675 IRDA_ERROR("%s(), ********* LSR_FRAME_ABORT *********\n", __func__);
1676 self->netdev->stats.tx_errors++;
1677 self->netdev->stats.tx_fifo_errors++;
1681 self->netdev->stats.tx_packets++;
1684 /* Check if we need to change the speed */
1685 if (self->new_speed)
1687 ali_ircc_change_speed(self, self->new_speed);
1688 self->new_speed = 0;
1691 /* Finished with this frame, so prepare for next */
1692 self->tx_fifo.ptr++;
1693 self->tx_fifo.len--;
1695 /* Any frames to be sent back-to-back? */
1696 if (self->tx_fifo.len)
1698 ali_ircc_dma_xmit(self);
1700 /* Not finished yet! */
1704 { /* Reset Tx FIFO info */
1705 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
1706 self->tx_fifo.tail = self->tx_buff.head;
1709 /* Make sure we have room for more frames */
1710 if (self->tx_fifo.free < MAX_TX_WINDOW) {
1711 /* Not busy transmitting anymore */
1712 /* Tell the network layer, that we can accept more frames */
1713 netif_wake_queue(self->netdev);
1716 switch_bank(iobase, BANK0);
1718 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1723 * Function ali_ircc_dma_receive (self)
1725 * Get ready for receiving a frame. The device will initiate a DMA
1726 * if it starts to receive a frame.
1729 static int ali_ircc_dma_receive(struct ali_ircc_cb *self)
1733 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1735 iobase = self->io.fir_base;
1737 /* Reset Tx FIFO info */
1738 self->tx_fifo.len = self->tx_fifo.ptr = self->tx_fifo.free = 0;
1739 self->tx_fifo.tail = self->tx_buff.head;
1742 switch_bank(iobase, BANK1);
1743 outb(inb(iobase+FIR_CR) & ~CR_DMA_EN, iobase+FIR_CR);
1745 /* Reset Message Count */
1746 switch_bank(iobase, BANK0);
1747 outb(0x07, iobase+FIR_LSR);
1749 self->rcvFramesOverflow = FALSE;
1751 self->LineStatus = inb(iobase+FIR_LSR) ;
1753 /* Reset Rx FIFO info */
1754 self->io.direction = IO_RECV;
1755 self->rx_buff.data = self->rx_buff.head;
1758 // switch_bank(iobase, BANK0);
1759 outb(LCR_A_FIFO_RESET, iobase+FIR_LCR_A);
1761 self->st_fifo.len = self->st_fifo.pending_bytes = 0;
1762 self->st_fifo.tail = self->st_fifo.head = 0;
1764 irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize,
1767 /* Set Receive Mode,Brick Wall */
1768 //switch_bank(iobase, BANK0);
1769 tmp = inb(iobase+FIR_LCR_B);
1770 outb((unsigned char)(tmp &0x3f) | LCR_B_RX_MODE | LCR_B_BW , iobase + FIR_LCR_B); // 2000/12/1 05:16PM
1771 IRDA_DEBUG(1, "%s(), *** Change To RX mode: FIR_LCR_B = 0x%x ***\n", __func__ , inb(iobase+FIR_LCR_B));
1773 /* Set Rx Threshold */
1774 switch_bank(iobase, BANK1);
1775 outb(RX_FIFO_Threshold, iobase+FIR_FIFO_TR);
1776 outb(RX_DMA_Threshold, iobase+FIR_DMA_TR);
1778 /* Enable DMA and Burst Mode */
1779 // switch_bank(iobase, BANK1);
1780 outb(CR_DMA_EN | CR_DMA_BURST, iobase+FIR_CR);
1782 switch_bank(iobase, BANK0);
1783 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1787 static int ali_ircc_dma_receive_complete(struct ali_ircc_cb *self)
1789 struct st_fifo *st_fifo;
1790 struct sk_buff *skb;
1791 __u8 status, MessageCount;
1792 int len, i, iobase, val;
1794 IRDA_DEBUG(1, "%s(), ---------------- Start -----------------\n", __func__ );
1796 st_fifo = &self->st_fifo;
1797 iobase = self->io.fir_base;
1799 switch_bank(iobase, BANK0);
1800 MessageCount = inb(iobase+ FIR_LSR)&0x07;
1802 if (MessageCount > 0)
1803 IRDA_DEBUG(0, "%s(), Message count = %d,\n", __func__ , MessageCount);
1805 for (i=0; i<=MessageCount; i++)
1808 switch_bank(iobase, BANK0);
1809 status = inb(iobase+FIR_LSR);
1811 switch_bank(iobase, BANK2);
1812 len = inb(iobase+FIR_RX_DSR_HI) & 0x0f;
1814 len |= inb(iobase+FIR_RX_DSR_LO);
1816 IRDA_DEBUG(1, "%s(), RX Length = 0x%.2x,\n", __func__ , len);
1817 IRDA_DEBUG(1, "%s(), RX Status = 0x%.2x,\n", __func__ , status);
1819 if (st_fifo->tail >= MAX_RX_WINDOW) {
1820 IRDA_DEBUG(0, "%s(), window is full!\n", __func__ );
1824 st_fifo->entries[st_fifo->tail].status = status;
1825 st_fifo->entries[st_fifo->tail].len = len;
1826 st_fifo->pending_bytes += len;
1831 for (i=0; i<=MessageCount; i++)
1833 /* Get first entry */
1834 status = st_fifo->entries[st_fifo->head].status;
1835 len = st_fifo->entries[st_fifo->head].len;
1836 st_fifo->pending_bytes -= len;
1840 /* Check for errors */
1841 if ((status & 0xd8) || self->rcvFramesOverflow || (len==0))
1843 IRDA_DEBUG(0,"%s(), ************* RX Errors ************\n", __func__ );
1846 self->netdev->stats.rx_errors++;
1848 self->rx_buff.data += len;
1850 if (status & LSR_FIFO_UR)
1852 self->netdev->stats.rx_frame_errors++;
1853 IRDA_DEBUG(0,"%s(), ************* FIFO Errors ************\n", __func__ );
1855 if (status & LSR_FRAME_ERROR)
1857 self->netdev->stats.rx_frame_errors++;
1858 IRDA_DEBUG(0,"%s(), ************* FRAME Errors ************\n", __func__ );
1861 if (status & LSR_CRC_ERROR)
1863 self->netdev->stats.rx_crc_errors++;
1864 IRDA_DEBUG(0,"%s(), ************* CRC Errors ************\n", __func__ );
1867 if(self->rcvFramesOverflow)
1869 self->netdev->stats.rx_frame_errors++;
1870 IRDA_DEBUG(0,"%s(), ************* Overran DMA buffer ************\n", __func__ );
1874 self->netdev->stats.rx_frame_errors++;
1875 IRDA_DEBUG(0,"%s(), ********** Receive Frame Size = 0 *********\n", __func__ );
1881 if (st_fifo->pending_bytes < 32)
1883 switch_bank(iobase, BANK0);
1884 val = inb(iobase+FIR_BSR);
1885 if ((val& BSR_FIFO_NOT_EMPTY)== 0x80)
1887 IRDA_DEBUG(0, "%s(), ************* BSR_FIFO_NOT_EMPTY ************\n", __func__ );
1889 /* Put this entry back in fifo */
1892 st_fifo->pending_bytes += len;
1893 st_fifo->entries[st_fifo->head].status = status;
1894 st_fifo->entries[st_fifo->head].len = len;
1897 * DMA not finished yet, so try again
1898 * later, set timer value, resolution
1902 switch_bank(iobase, BANK1);
1903 outb(TIMER_IIR_500, iobase+FIR_TIMER_IIR); // 2001/1/2 05:07PM
1906 outb(inb(iobase+FIR_CR) | CR_TIMER_EN, iobase+FIR_CR);
1908 return FALSE; /* I'll be back! */
1913 * Remember the time we received this frame, so we can
1914 * reduce the min turn time a bit since we will know
1915 * how much time we have used for protocol processing
1917 do_gettimeofday(&self->stamp);
1919 skb = dev_alloc_skb(len+1);
1922 IRDA_WARNING("%s(), memory squeeze, "
1923 "dropping frame.\n",
1925 self->netdev->stats.rx_dropped++;
1930 /* Make sure IP header gets aligned */
1931 skb_reserve(skb, 1);
1933 /* Copy frame without CRC, CRC is removed by hardware*/
1935 skb_copy_to_linear_data(skb, self->rx_buff.data, len);
1937 /* Move to next frame */
1938 self->rx_buff.data += len;
1939 self->netdev->stats.rx_bytes += len;
1940 self->netdev->stats.rx_packets++;
1942 skb->dev = self->netdev;
1943 skb_reset_mac_header(skb);
1944 skb->protocol = htons(ETH_P_IRDA);
1949 switch_bank(iobase, BANK0);
1951 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
1958 * Function ali_ircc_sir_hard_xmit (skb, dev)
1960 * Transmit the frame!
1963 static netdev_tx_t ali_ircc_sir_hard_xmit(struct sk_buff *skb,
1964 struct net_device *dev)
1966 struct ali_ircc_cb *self;
1967 unsigned long flags;
1971 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
1973 IRDA_ASSERT(dev != NULL, return NETDEV_TX_OK;);
1975 self = netdev_priv(dev);
1976 IRDA_ASSERT(self != NULL, return NETDEV_TX_OK;);
1978 iobase = self->io.sir_base;
1980 netif_stop_queue(dev);
1982 /* Make sure tests *& speed change are atomic */
1983 spin_lock_irqsave(&self->lock, flags);
1985 /* Note : you should make sure that speed changes are not going
1986 * to corrupt any outgoing frame. Look at nsc-ircc for the gory
1987 * details - Jean II */
1989 /* Check if we need to change the speed */
1990 speed = irda_get_next_speed(skb);
1991 if ((speed != self->io.speed) && (speed != -1)) {
1992 /* Check for empty frame */
1994 ali_ircc_change_speed(self, speed);
1995 dev->trans_start = jiffies;
1996 spin_unlock_irqrestore(&self->lock, flags);
1998 return NETDEV_TX_OK;
2000 self->new_speed = speed;
2003 /* Init tx buffer */
2004 self->tx_buff.data = self->tx_buff.head;
2006 /* Copy skb to tx_buff while wrapping, stuffing and making CRC */
2007 self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data,
2008 self->tx_buff.truesize);
2010 self->netdev->stats.tx_bytes += self->tx_buff.len;
2012 /* Turn on transmit finished interrupt. Will fire immediately! */
2013 outb(UART_IER_THRI, iobase+UART_IER);
2015 dev->trans_start = jiffies;
2016 spin_unlock_irqrestore(&self->lock, flags);
2020 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
2022 return NETDEV_TX_OK;
2027 * Function ali_ircc_net_ioctl (dev, rq, cmd)
2029 * Process IOCTL commands for this device
2032 static int ali_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2034 struct if_irda_req *irq = (struct if_irda_req *) rq;
2035 struct ali_ircc_cb *self;
2036 unsigned long flags;
2039 IRDA_DEBUG(2, "%s(), ---------------- Start ----------------\n", __func__ );
2041 IRDA_ASSERT(dev != NULL, return -1;);
2043 self = netdev_priv(dev);
2045 IRDA_ASSERT(self != NULL, return -1;);
2047 IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __func__ , dev->name, cmd);
2050 case SIOCSBANDWIDTH: /* Set bandwidth */
2051 IRDA_DEBUG(1, "%s(), SIOCSBANDWIDTH\n", __func__ );
2053 * This function will also be used by IrLAP to change the
2054 * speed, so we still must allow for speed change within
2055 * interrupt context.
2057 if (!in_interrupt() && !capable(CAP_NET_ADMIN))
2060 spin_lock_irqsave(&self->lock, flags);
2061 ali_ircc_change_speed(self, irq->ifr_baudrate);
2062 spin_unlock_irqrestore(&self->lock, flags);
2064 case SIOCSMEDIABUSY: /* Set media busy */
2065 IRDA_DEBUG(1, "%s(), SIOCSMEDIABUSY\n", __func__ );
2066 if (!capable(CAP_NET_ADMIN))
2068 irda_device_set_media_busy(self->netdev, TRUE);
2070 case SIOCGRECEIVING: /* Check if we are receiving right now */
2071 IRDA_DEBUG(2, "%s(), SIOCGRECEIVING\n", __func__ );
2072 /* This is protected */
2073 irq->ifr_receiving = ali_ircc_is_receiving(self);
2079 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
2085 * Function ali_ircc_is_receiving (self)
2087 * Return TRUE is we are currently receiving a frame
2090 static int ali_ircc_is_receiving(struct ali_ircc_cb *self)
2092 unsigned long flags;
2096 IRDA_DEBUG(2, "%s(), ---------------- Start -----------------\n", __func__ );
2098 IRDA_ASSERT(self != NULL, return FALSE;);
2100 spin_lock_irqsave(&self->lock, flags);
2102 if (self->io.speed > 115200)
2104 iobase = self->io.fir_base;
2106 switch_bank(iobase, BANK1);
2107 if((inb(iobase+FIR_FIFO_FR) & 0x3f) != 0)
2109 /* We are receiving something */
2110 IRDA_DEBUG(1, "%s(), We are receiving something\n", __func__ );
2113 switch_bank(iobase, BANK0);
2117 status = (self->rx_buff.state != OUTSIDE_FRAME);
2120 spin_unlock_irqrestore(&self->lock, flags);
2122 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
2127 static int ali_ircc_suspend(struct platform_device *dev, pm_message_t state)
2129 struct ali_ircc_cb *self = platform_get_drvdata(dev);
2131 IRDA_MESSAGE("%s, Suspending\n", ALI_IRCC_DRIVER_NAME);
2133 if (self->io.suspended)
2136 ali_ircc_net_close(self->netdev);
2138 self->io.suspended = 1;
2143 static int ali_ircc_resume(struct platform_device *dev)
2145 struct ali_ircc_cb *self = platform_get_drvdata(dev);
2147 if (!self->io.suspended)
2150 ali_ircc_net_open(self->netdev);
2152 IRDA_MESSAGE("%s, Waking up\n", ALI_IRCC_DRIVER_NAME);
2154 self->io.suspended = 0;
2159 /* ALi Chip Function */
2161 static void SetCOMInterrupts(struct ali_ircc_cb *self , unsigned char enable)
2164 unsigned char newMask;
2166 int iobase = self->io.fir_base; /* or sir_base */
2168 IRDA_DEBUG(2, "%s(), -------- Start -------- ( Enable = %d )\n", __func__ , enable);
2170 /* Enable the interrupt which we wish to */
2172 if (self->io.direction == IO_XMIT)
2174 if (self->io.speed > 115200) /* FIR, MIR */
2176 newMask = self->ier;
2180 newMask = UART_IER_THRI | UART_IER_RDI;
2184 if (self->io.speed > 115200) /* FIR, MIR */
2186 newMask = self->ier;
2190 newMask = UART_IER_RDI;
2194 else /* Disable all the interrupts */
2200 //SIR and FIR has different registers
2201 if (self->io.speed > 115200)
2203 switch_bank(iobase, BANK0);
2204 outb(newMask, iobase+FIR_IER);
2207 outb(newMask, iobase+UART_IER);
2209 IRDA_DEBUG(2, "%s(), ----------------- End ------------------\n", __func__ );
2212 static void SIR2FIR(int iobase)
2214 //unsigned char tmp;
2216 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
2218 /* Already protected (change_speed() or setup()), no need to lock.
2221 outb(0x28, iobase+UART_MCR);
2222 outb(0x68, iobase+UART_MCR);
2223 outb(0x88, iobase+UART_MCR);
2225 outb(0x60, iobase+FIR_MCR); /* Master Reset */
2226 outb(0x20, iobase+FIR_MCR); /* Master Interrupt Enable */
2228 //tmp = inb(iobase+FIR_LCR_B); /* SIP enable */
2230 //outb(tmp, iobase+FIR_LCR_B);
2232 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
2235 static void FIR2SIR(int iobase)
2239 IRDA_DEBUG(1, "%s(), ---------------- Start ----------------\n", __func__ );
2241 /* Already protected (change_speed() or setup()), no need to lock.
2244 outb(0x20, iobase+FIR_MCR); /* IRQ to low */
2245 outb(0x00, iobase+UART_IER);
2247 outb(0xA0, iobase+FIR_MCR); /* Don't set master reset */
2248 outb(0x00, iobase+UART_FCR);
2249 outb(0x07, iobase+UART_FCR);
2251 val = inb(iobase+UART_RX);
2252 val = inb(iobase+UART_LSR);
2253 val = inb(iobase+UART_MSR);
2255 IRDA_DEBUG(1, "%s(), ----------------- End ------------------\n", __func__ );
2258 MODULE_AUTHOR("Benjamin Kong <benjamin_kong@ali.com.tw>");
2259 MODULE_DESCRIPTION("ALi FIR Controller Driver");
2260 MODULE_LICENSE("GPL");
2261 MODULE_ALIAS("platform:" ALI_IRCC_DRIVER_NAME);
2264 module_param_array(io, int, NULL, 0);
2265 MODULE_PARM_DESC(io, "Base I/O addresses");
2266 module_param_array(irq, int, NULL, 0);
2267 MODULE_PARM_DESC(irq, "IRQ lines");
2268 module_param_array(dma, int, NULL, 0);
2269 MODULE_PARM_DESC(dma, "DMA channels");
2271 module_init(ali_ircc_init);
2272 module_exit(ali_ircc_cleanup);