--- /dev/null
+/*****************************************************************
+ *
+ * Filename: donauboe.c
+ * Version: 2.17
+ * Description: Driver for the Toshiba OBOE (or type-O or 701)
+ * FIR Chipset, also supports the DONAUOBOE (type-DO
+ * or d01) FIR chipset which as far as I know is
+ * register compatible.
+ * Documentation: http://libxg.free.fr/irda/lib-irda.html
+ * Status: Experimental.
+ * Author: James McKenzie <james@fishsoup.dhs.org>
+ * Created at: Sat May 8 12:35:27 1999
+ * Modified: Paul Bristow <paul.bristow@technologist.com>
+ * Modified: Mon Nov 11 19:10:05 1999
+ * Modified: James McKenzie <james@fishsoup.dhs.org>
+ * Modified: Thu Mar 16 12:49:00 2000 (Substantial rewrite)
+ * Modified: Sat Apr 29 00:23:03 2000 (Added DONAUOBOE support)
+ * Modified: Wed May 24 23:45:02 2000 (Fixed chipio_t structure)
+ * Modified: 2.13 Christian Gennerat <christian.gennerat@polytechnique.org>
+ * Modified: 2.13 dim jan 07 21:57:39 2001 (tested with kernel 2.4 & irnet/ppp)
+ * Modified: 2.14 Christian Gennerat <christian.gennerat@polytechnique.org>
+ * Modified: 2.14 lun fev 05 17:55:59 2001 (adapted to patch-2.4.1-pre8-irda1)
+ * Modified: 2.15 Martin Lucina <mato@kotelna.sk>
+ * Modified: 2.15 Fri Jun 21 20:40:59 2002 (sync with 2.4.18, substantial fixes)
+ * Modified: 2.16 Martin Lucina <mato@kotelna.sk>
+ * Modified: 2.16 Sat Jun 22 18:54:29 2002 (fix freeregion, default to verbose)
+ * Modified: 2.17 Christian Gennerat <christian.gennerat@polytechnique.org>
+ * Modified: 2.17 jeu sep 12 08:50:20 2002 (save_flags();cli(); replaced by spinlocks)
+ * Modified: 2.18 Christian Gennerat <christian.gennerat@polytechnique.org>
+ * Modified: 2.18 ven jan 10 03:14:16 2003 Change probe default options
+ *
+ * Copyright (c) 1999 James McKenzie, All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * Neither James McKenzie nor Cambridge University admit liability nor
+ * provide warranty for any of this software. This material is
+ * provided "AS-IS" and at no charge.
+ *
+ * Applicable Models : Libretto 100/110CT and many more.
+ * Toshiba refers to this chip as the type-O IR port,
+ * or the type-DO IR port.
+ *
+ ********************************************************************/
+
+/* Look at toshoboe.h (currently in include/net/irda) for details of */
+/* Where to get documentation on the chip */
+
+/* See below for a description of the logic in this driver */
+
+/* User servicable parts */
+/* USE_PROBE Create the code which probes the chip and does a few tests */
+/* do_probe module parameter Enable this code */
+/* Probe code is very useful for understanding how the hardware works */
+/* Use it with various combinations of TT_LEN, RX_LEN */
+/* Strongly recommended, disable if the probe fails on your machine */
+/* and send me <james@fishsoup.dhs.org> the output of dmesg */
+#define USE_PROBE 1
+#undef USE_PROBE
+
+/* Trace Transmit ring, interrupts, Receive ring or not ? */
+#define PROBE_VERBOSE 1
+
+/* Debug option, examine sent and received raw data */
+/* Irdadump is better, but does not see all packets. enable it if you want. */
+#undef DUMP_PACKETS
+
+/* MIR mode has not been tested. Some behaviour is different */
+/* Seems to work against an Ericsson R520 for me. -Martin */
+#define USE_MIR
+
+/* Schedule back to back hardware transmits wherever possible, otherwise */
+/* we need an interrupt for every frame, unset if oboe works for a bit and */
+/* then hangs */
+#define OPTIMIZE_TX
+
+/* Set the number of slots in the rings */
+/* If you get rx/tx fifo overflows at high bitrates, you can try increasing */
+/* these */
+
+#define RING_SIZE (OBOE_RING_SIZE_RX8 | OBOE_RING_SIZE_TX8)
+#define TX_SLOTS 8
+#define RX_SLOTS 8
+
+
+/* Less user servicable parts below here */
+
+/* Test, Transmit and receive buffer sizes, adjust at your peril */
+/* remarks: nfs usually needs 1k blocks */
+/* remarks: in SIR mode, CRC is received, -> RX_LEN=TX_LEN+2 */
+/* remarks: test accepts large blocks. Standard is 0x80 */
+/* When TT_LEN > RX_LEN (SIR mode) data is stored in successive slots. */
+/* When 3 or more slots are needed for each test packet, */
+/* data received in the first slots is overwritten, even */
+/* if OBOE_CTL_RX_HW_OWNS is not set, without any error! */
+#define TT_LEN 0x80
+#define TX_LEN 0xc00
+#define RX_LEN 0xc04
+/* Real transmitted length (SIR mode) is about 14+(2%*TX_LEN) more */
+/* long than user-defined length (see async_wrap_skb) and is less then 4K */
+/* Real received length is (max RX_LEN) differs from user-defined */
+/* length only b the CRC (2 or 4 bytes) */
+#define BUF_SAFETY 0x7a
+#define RX_BUF_SZ (RX_LEN)
+#define TX_BUF_SZ (TX_LEN+BUF_SAFETY)
+
+
+/* Logic of the netdev part of this driver */
+
+/* The RX ring is filled with buffers, when a packet arrives */
+/* it is DMA'd into the buffer which is marked used and RxDone called */
+/* RxDone forms an skb (and checks the CRC if in SIR mode) and ships */
+/* the packet off upstairs */
+
+/* The transmitter on the oboe chip can work in one of two modes */
+/* for each ring->tx[] the transmitter can either */
+/* a) transmit the packet, leave the trasmitter enabled and proceed to */
+/* the next ring */
+/* OR */
+/* b) transmit the packet, switch off the transmitter and issue TxDone */
+
+/* All packets are entered into the ring in mode b), if the ring was */
+/* empty the transmitter is started. */
+
+/* If OPTIMIZE_TX is defined then in TxDone if the ring contains */
+/* more than one packet, all but the last are set to mode a) [HOWEVER */
+/* the hardware may not notice this, this is why we start in mode b) ] */
+/* then restart the transmitter */
+
+/* If OPTIMIZE_TX is not defined then we just restart the transmitter */
+/* if the ring isn't empty */
+
+/* Speed changes are delayed until the TxRing is empty */
+/* mtt is handled by generating packets with bad CRCs, before the data */
+
+/* TODO: */
+/* check the mtt works ok */
+/* finish the watchdog */
+
+/* No user servicable parts below here */
+
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/rtnetlink.h>
+
+#include <asm/io.h>
+
+#include <net/irda/wrapper.h>
+#include <net/irda/irda.h>
+//#include <net/irda/irmod.h>
+//#include <net/irda/irlap_frame.h>
+#include <net/irda/irda_device.h>
+#include <net/irda/crc.h>
+
+#include "donauboe.h"
+
+#define INB(port) inb_p(port)
+#define OUTB(val,port) outb_p(val,port)
+#define OUTBP(val,port) outb_p(val,port)
+
+#define PROMPT OUTB(OBOE_PROMPT_BIT,OBOE_PROMPT);
+
+#if PROBE_VERBOSE
+#define PROBE_DEBUG(args...) (printk (args))
+#else
+#define PROBE_DEBUG(args...) ;
+#endif
+
+/* Set the DMA to be byte at a time */
+#define CONFIG0H_DMA_OFF OBOE_CONFIG0H_RCVANY
+#define CONFIG0H_DMA_ON_NORX CONFIG0H_DMA_OFF| OBOE_CONFIG0H_ENDMAC
+#define CONFIG0H_DMA_ON CONFIG0H_DMA_ON_NORX | OBOE_CONFIG0H_ENRX
+
+static const struct pci_device_id toshoboe_pci_tbl[] = {
+ { PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_FIR701, PCI_ANY_ID, PCI_ANY_ID, },
+ { PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_FIRD01, PCI_ANY_ID, PCI_ANY_ID, },
+ { } /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(pci, toshoboe_pci_tbl);
+
+#define DRIVER_NAME "toshoboe"
+static char *driver_name = DRIVER_NAME;
+
+static int max_baud = 4000000;
+#ifdef USE_PROBE
+static bool do_probe = false;
+#endif
+
+
+/**********************************************************************/
+static int
+toshoboe_checkfcs (unsigned char *buf, int len)
+{
+ int i;
+ union
+ {
+ __u16 value;
+ __u8 bytes[2];
+ }
+ fcs;
+
+ fcs.value = INIT_FCS;
+
+ for (i = 0; i < len; ++i)
+ fcs.value = irda_fcs (fcs.value, *(buf++));
+
+ return fcs.value == GOOD_FCS;
+}
+
+/***********************************************************************/
+/* Generic chip handling code */
+#ifdef DUMP_PACKETS
+static unsigned char dump[50];
+static void
+_dumpbufs (unsigned char *data, int len, char tete)
+{
+int i,j;
+char head=tete;
+for (i=0;i<len;i+=16) {
+ for (j=0;j<16 && i+j<len;j++) { sprintf(&dump[3*j],"%02x.",data[i+j]); }
+ dump [3*j]=0;
+ pr_debug("%c%s\n", head, dump);
+ head='+';
+ }
+}
+#endif
+
+#ifdef USE_PROBE
+/* Dump the registers */
+static void
+toshoboe_dumpregs (struct toshoboe_cb *self)
+{
+ __u32 ringbase;
+
+ ringbase = INB (OBOE_RING_BASE0) << 10;
+ ringbase |= INB (OBOE_RING_BASE1) << 18;
+ ringbase |= INB (OBOE_RING_BASE2) << 26;
+
+ printk (KERN_ERR DRIVER_NAME ": Register dump:\n");
+ printk (KERN_ERR "Interrupts: Tx:%d Rx:%d TxUnder:%d RxOver:%d Sip:%d\n",
+ self->int_tx, self->int_rx, self->int_txunder, self->int_rxover,
+ self->int_sip);
+ printk (KERN_ERR "RX %02x TX %02x RingBase %08x\n",
+ INB (OBOE_RXSLOT), INB (OBOE_TXSLOT), ringbase);
+ printk (KERN_ERR "RING_SIZE %02x IER %02x ISR %02x\n",
+ INB (OBOE_RING_SIZE), INB (OBOE_IER), INB (OBOE_ISR));
+ printk (KERN_ERR "CONFIG1 %02x STATUS %02x\n",
+ INB (OBOE_CONFIG1), INB (OBOE_STATUS));
+ printk (KERN_ERR "CONFIG0 %02x%02x ENABLE %02x%02x\n",
+ INB (OBOE_CONFIG0H), INB (OBOE_CONFIG0L),
+ INB (OBOE_ENABLEH), INB (OBOE_ENABLEL));
+ printk (KERN_ERR "NEW_PCONFIG %02x%02x CURR_PCONFIG %02x%02x\n",
+ INB (OBOE_NEW_PCONFIGH), INB (OBOE_NEW_PCONFIGL),
+ INB (OBOE_CURR_PCONFIGH), INB (OBOE_CURR_PCONFIGL));
+ printk (KERN_ERR "MAXLEN %02x%02x RXCOUNT %02x%02x\n",
+ INB (OBOE_MAXLENH), INB (OBOE_MAXLENL),
+ INB (OBOE_RXCOUNTL), INB (OBOE_RXCOUNTH));
+
+ if (self->ring)
+ {
+ int i;
+ ringbase = virt_to_bus (self->ring);
+ printk (KERN_ERR "Ring at %08x:\n", ringbase);
+ printk (KERN_ERR "RX:");
+ for (i = 0; i < RX_SLOTS; ++i)
+ printk (" (%d,%02x)",self->ring->rx[i].len,self->ring->rx[i].control);
+ printk ("\n");
+ printk (KERN_ERR "TX:");
+ for (i = 0; i < RX_SLOTS; ++i)
+ printk (" (%d,%02x)",self->ring->tx[i].len,self->ring->tx[i].control);
+ printk ("\n");
+ }
+}
+#endif
+
+/*Don't let the chip look at memory */
+static void
+toshoboe_disablebm (struct toshoboe_cb *self)
+{
+ __u8 command;
+ pci_read_config_byte (self->pdev, PCI_COMMAND, &command);
+ command &= ~PCI_COMMAND_MASTER;
+ pci_write_config_byte (self->pdev, PCI_COMMAND, command);
+
+}
+
+/* Shutdown the chip and point the taskfile reg somewhere else */
+static void
+toshoboe_stopchip (struct toshoboe_cb *self)
+{
+ /*Disable interrupts */
+ OUTB (0x0, OBOE_IER);
+ /*Disable DMA, Disable Rx, Disable Tx */
+ OUTB (CONFIG0H_DMA_OFF, OBOE_CONFIG0H);
+ /*Disable SIR MIR FIR, Tx and Rx */
+ OUTB (0x00, OBOE_ENABLEH);
+ /*Point the ring somewhere safe */
+ OUTB (0x3f, OBOE_RING_BASE2);
+ OUTB (0xff, OBOE_RING_BASE1);
+ OUTB (0xff, OBOE_RING_BASE0);
+
+ OUTB (RX_LEN >> 8, OBOE_MAXLENH);
+ OUTB (RX_LEN & 0xff, OBOE_MAXLENL);
+
+ /*Acknoledge any pending interrupts */
+ OUTB (0xff, OBOE_ISR);
+
+ /*Why */
+ OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH);
+
+ /*switch it off */
+ OUTB (OBOE_CONFIG1_OFF, OBOE_CONFIG1);
+
+ toshoboe_disablebm (self);
+}
+
+/* Transmitter initialization */
+static void
+toshoboe_start_DMA (struct toshoboe_cb *self, int opts)
+{
+ OUTB (0x0, OBOE_ENABLEH);
+ OUTB (CONFIG0H_DMA_ON | opts, OBOE_CONFIG0H);
+ OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH);
+ PROMPT;
+}
+
+/*Set the baud rate */
+static void
+toshoboe_setbaud (struct toshoboe_cb *self)
+{
+ __u16 pconfig = 0;
+ __u8 config0l = 0;
+
+ pr_debug("%s(%d/%d)\n", __func__, self->speed, self->io.speed);
+
+ switch (self->speed)
+ {
+ case 2400:
+ case 4800:
+ case 9600:
+ case 19200:
+ case 38400:
+ case 57600:
+ case 115200:
+#ifdef USE_MIR
+ case 1152000:
+#endif
+ case 4000000:
+ break;
+ default:
+
+ printk (KERN_ERR DRIVER_NAME ": switch to unsupported baudrate %d\n",
+ self->speed);
+ return;
+ }
+
+ switch (self->speed)
+ {
+ /* For SIR the preamble is done by adding XBOFs */
+ /* to the packet */
+ /* set to filtered SIR mode, filter looks for BOF and EOF */
+ case 2400:
+ pconfig |= 47 << OBOE_PCONFIG_BAUDSHIFT;
+ pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT;
+ break;
+ case 4800:
+ pconfig |= 23 << OBOE_PCONFIG_BAUDSHIFT;
+ pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT;
+ break;
+ case 9600:
+ pconfig |= 11 << OBOE_PCONFIG_BAUDSHIFT;
+ pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT;
+ break;
+ case 19200:
+ pconfig |= 5 << OBOE_PCONFIG_BAUDSHIFT;
+ pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT;
+ break;
+ case 38400:
+ pconfig |= 2 << OBOE_PCONFIG_BAUDSHIFT;
+ pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT;
+ break;
+ case 57600:
+ pconfig |= 1 << OBOE_PCONFIG_BAUDSHIFT;
+ pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT;
+ break;
+ case 115200:
+ pconfig |= 0 << OBOE_PCONFIG_BAUDSHIFT;
+ pconfig |= 25 << OBOE_PCONFIG_WIDTHSHIFT;
+ break;
+ default:
+ /*Set to packet based reception */
+ OUTB (RX_LEN >> 8, OBOE_MAXLENH);
+ OUTB (RX_LEN & 0xff, OBOE_MAXLENL);
+ break;
+ }
+
+ switch (self->speed)
+ {
+ case 2400:
+ case 4800:
+ case 9600:
+ case 19200:
+ case 38400:
+ case 57600:
+ case 115200:
+ config0l = OBOE_CONFIG0L_ENSIR;
+ if (self->async)
+ {
+ /*Set to character based reception */
+ /*System will lock if MAXLEN=0 */
+ /*so have to be careful */
+ OUTB (0x01, OBOE_MAXLENH);
+ OUTB (0x01, OBOE_MAXLENL);
+ OUTB (0x00, OBOE_MAXLENH);
+ }
+ else
+ {
+ /*Set to packet based reception */
+ config0l |= OBOE_CONFIG0L_ENSIRF;
+ OUTB (RX_LEN >> 8, OBOE_MAXLENH);
+ OUTB (RX_LEN & 0xff, OBOE_MAXLENL);
+ }
+ break;
+
+#ifdef USE_MIR
+ /* MIR mode */
+ /* Set for 16 bit CRC and enable MIR */
+ /* Preamble now handled by the chip */
+ case 1152000:
+ pconfig |= 0 << OBOE_PCONFIG_BAUDSHIFT;
+ pconfig |= 8 << OBOE_PCONFIG_WIDTHSHIFT;
+ pconfig |= 1 << OBOE_PCONFIG_PREAMBLESHIFT;
+ config0l = OBOE_CONFIG0L_CRC16 | OBOE_CONFIG0L_ENMIR;
+ break;
+#endif
+ /* FIR mode */
+ /* Set for 32 bit CRC and enable FIR */
+ /* Preamble handled by the chip */
+ case 4000000:
+ pconfig |= 0 << OBOE_PCONFIG_BAUDSHIFT;
+ /* Documentation says 14, but toshiba use 15 in their drivers */
+ pconfig |= 15 << OBOE_PCONFIG_PREAMBLESHIFT;
+ config0l = OBOE_CONFIG0L_ENFIR;
+ break;
+ }
+
+ /* Copy into new PHY config buffer */
+ OUTBP (pconfig >> 8, OBOE_NEW_PCONFIGH);
+ OUTB (pconfig & 0xff, OBOE_NEW_PCONFIGL);
+ OUTB (config0l, OBOE_CONFIG0L);
+
+ /* Now make OBOE copy from new PHY to current PHY */
+ OUTB (0x0, OBOE_ENABLEH);
+ OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH);
+ PROMPT;
+
+ /* speed change executed */
+ self->new_speed = 0;
+ self->io.speed = self->speed;
+}
+
+/*Let the chip look at memory */
+static void
+toshoboe_enablebm (struct toshoboe_cb *self)
+{
+ pci_set_master (self->pdev);
+}
+
+/*setup the ring */
+static void
+toshoboe_initring (struct toshoboe_cb *self)
+{
+ int i;
+
+ for (i = 0; i < TX_SLOTS; ++i)
+ {
+ self->ring->tx[i].len = 0;
+ self->ring->tx[i].control = 0x00;
+ self->ring->tx[i].address = virt_to_bus (self->tx_bufs[i]);
+ }
+
+ for (i = 0; i < RX_SLOTS; ++i)
+ {
+ self->ring->rx[i].len = RX_LEN;
+ self->ring->rx[i].len = 0;
+ self->ring->rx[i].address = virt_to_bus (self->rx_bufs[i]);
+ self->ring->rx[i].control = OBOE_CTL_RX_HW_OWNS;
+ }
+}
+
+static void
+toshoboe_resetptrs (struct toshoboe_cb *self)
+{
+ /* Can reset pointers by twidling DMA */
+ OUTB (0x0, OBOE_ENABLEH);
+ OUTBP (CONFIG0H_DMA_OFF, OBOE_CONFIG0H);
+ OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH);
+
+ self->rxs = inb_p (OBOE_RXSLOT) & OBOE_SLOT_MASK;
+ self->txs = inb_p (OBOE_TXSLOT) & OBOE_SLOT_MASK;
+}
+
+/* Called in locked state */
+static void
+toshoboe_initptrs (struct toshoboe_cb *self)
+{
+
+ /* spin_lock_irqsave(self->spinlock, flags); */
+ /* save_flags (flags); */
+
+ /* Can reset pointers by twidling DMA */
+ toshoboe_resetptrs (self);
+
+ OUTB (0x0, OBOE_ENABLEH);
+ OUTB (CONFIG0H_DMA_ON, OBOE_CONFIG0H);
+ OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH);
+
+ self->txpending = 0;
+
+ /* spin_unlock_irqrestore(self->spinlock, flags); */
+ /* restore_flags (flags); */
+}
+
+/* Wake the chip up and get it looking at the rings */
+/* Called in locked state */
+static void
+toshoboe_startchip (struct toshoboe_cb *self)
+{
+ __u32 physaddr;
+
+ toshoboe_initring (self);
+ toshoboe_enablebm (self);
+ OUTBP (OBOE_CONFIG1_RESET, OBOE_CONFIG1);
+ OUTBP (OBOE_CONFIG1_ON, OBOE_CONFIG1);
+
+ /* Stop the clocks */
+ OUTB (0, OBOE_ENABLEH);
+
+ /*Set size of rings */
+ OUTB (RING_SIZE, OBOE_RING_SIZE);
+
+ /*Acknoledge any pending interrupts */
+ OUTB (0xff, OBOE_ISR);
+
+ /*Enable ints */
+ OUTB (OBOE_INT_TXDONE | OBOE_INT_RXDONE |
+ OBOE_INT_TXUNDER | OBOE_INT_RXOVER | OBOE_INT_SIP , OBOE_IER);
+
+ /*Acknoledge any pending interrupts */
+ OUTB (0xff, OBOE_ISR);
+
+ /*Set the maximum packet length to 0xfff (4095) */
+ OUTB (RX_LEN >> 8, OBOE_MAXLENH);
+ OUTB (RX_LEN & 0xff, OBOE_MAXLENL);
+
+ /*Shutdown DMA */
+ OUTB (CONFIG0H_DMA_OFF, OBOE_CONFIG0H);
+
+ /*Find out where the rings live */
+ physaddr = virt_to_bus (self->ring);
+
+ IRDA_ASSERT ((physaddr & 0x3ff) == 0,
+ printk (KERN_ERR DRIVER_NAME "ring not correctly aligned\n");
+ return;);
+
+ OUTB ((physaddr >> 10) & 0xff, OBOE_RING_BASE0);
+ OUTB ((physaddr >> 18) & 0xff, OBOE_RING_BASE1);
+ OUTB ((physaddr >> 26) & 0x3f, OBOE_RING_BASE2);
+
+ /*Enable DMA controller in byte mode and RX */
+ OUTB (CONFIG0H_DMA_ON, OBOE_CONFIG0H);
+
+ /* Start up the clocks */
+ OUTB (OBOE_ENABLEH_PHYANDCLOCK, OBOE_ENABLEH);
+
+ /*set to sensible speed */
+ self->speed = 9600;
+ toshoboe_setbaud (self);
+ toshoboe_initptrs (self);
+}
+
+static void
+toshoboe_isntstuck (struct toshoboe_cb *self)
+{
+}
+
+static void
+toshoboe_checkstuck (struct toshoboe_cb *self)
+{
+ unsigned long flags;
+
+ if (0)
+ {
+ spin_lock_irqsave(&self->spinlock, flags);
+
+ /* This will reset the chip completely */
+ printk (KERN_ERR DRIVER_NAME ": Resetting chip\n");
+
+ toshoboe_stopchip (self);
+ toshoboe_startchip (self);
+ spin_unlock_irqrestore(&self->spinlock, flags);
+ }
+}
+
+/*Generate packet of about mtt us long */
+static int
+toshoboe_makemttpacket (struct toshoboe_cb *self, void *buf, int mtt)
+{
+ int xbofs;
+
+ xbofs = ((int) (mtt/100)) * (int) (self->speed);
+ xbofs=xbofs/80000; /*Eight bits per byte, and mtt is in us*/
+ xbofs++;
+
+ pr_debug(DRIVER_NAME ": generated mtt of %d bytes for %d us at %d baud\n",
+ xbofs, mtt, self->speed);
+
+ if (xbofs > TX_LEN)
+ {
+ printk (KERN_ERR DRIVER_NAME ": wanted %d bytes MTT but TX_LEN is %d\n",
+ xbofs, TX_LEN);
+ xbofs = TX_LEN;
+ }
+
+ /*xbofs will do for SIR, MIR and FIR,SIR mode doesn't generate a checksum anyway */
+ memset (buf, XBOF, xbofs);
+
+ return xbofs;
+}
+
+#ifdef USE_PROBE
+/***********************************************************************/
+/* Probe code */
+
+static void
+toshoboe_dumptx (struct toshoboe_cb *self)
+{
+ int i;
+ PROBE_DEBUG(KERN_WARNING "TX:");
+ for (i = 0; i < RX_SLOTS; ++i)
+ PROBE_DEBUG(" (%d,%02x)",self->ring->tx[i].len,self->ring->tx[i].control);
+ PROBE_DEBUG(" [%d]\n",self->speed);
+}
+
+static void
+toshoboe_dumprx (struct toshoboe_cb *self, int score)
+{
+ int i;
+ PROBE_DEBUG(" %d\nRX:",score);
+ for (i = 0; i < RX_SLOTS; ++i)
+ PROBE_DEBUG(" (%d,%02x)",self->ring->rx[i].len,self->ring->rx[i].control);
+ PROBE_DEBUG("\n");
+}
+
+static inline int
+stuff_byte (__u8 byte, __u8 * buf)
+{
+ switch (byte)
+ {
+ case BOF: /* FALLTHROUGH */
+ case EOF: /* FALLTHROUGH */
+ case CE:
+ /* Insert transparently coded */
+ buf[0] = CE; /* Send link escape */
+ buf[1] = byte ^ IRDA_TRANS; /* Complement bit 5 */
+ return 2;
+ /* break; */
+ default:
+ /* Non-special value, no transparency required */
+ buf[0] = byte;
+ return 1;
+ /* break; */
+ }
+}
+
+static irqreturn_t
+toshoboe_probeinterrupt (int irq, void *dev_id)
+{
+ struct toshoboe_cb *self = dev_id;
+ __u8 irqstat;
+
+ irqstat = INB (OBOE_ISR);
+
+/* was it us */
+ if (!(irqstat & OBOE_INT_MASK))
+ return IRQ_NONE;
+
+/* Ack all the interrupts */
+ OUTB (irqstat, OBOE_ISR);
+
+ if (irqstat & OBOE_INT_TXDONE)
+ {
+ int txp;
+
+ self->int_tx++;
+ PROBE_DEBUG("T");
+
+ txp = INB (OBOE_TXSLOT) & OBOE_SLOT_MASK;
+ if (self->ring->tx[txp].control & OBOE_CTL_TX_HW_OWNS)
+ {
+ self->int_tx+=100;
+ PROBE_DEBUG("S");
+ toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX | OBOE_CONFIG0H_LOOP);
+ }
+ }
+
+ if (irqstat & OBOE_INT_RXDONE) {
+ self->int_rx++;
+ PROBE_DEBUG("R"); }
+ if (irqstat & OBOE_INT_TXUNDER) {
+ self->int_txunder++;
+ PROBE_DEBUG("U"); }
+ if (irqstat & OBOE_INT_RXOVER) {
+ self->int_rxover++;
+ PROBE_DEBUG("O"); }
+ if (irqstat & OBOE_INT_SIP) {
+ self->int_sip++;
+ PROBE_DEBUG("I"); }
+ return IRQ_HANDLED;
+}
+
+static int
+toshoboe_maketestpacket (unsigned char *buf, int badcrc, int fir)
+{
+ int i;
+ int len = 0;
+ union
+ {
+ __u16 value;
+ __u8 bytes[2];
+ }
+ fcs;
+
+ if (fir)
+ {
+ memset (buf, 0, TT_LEN);
+ return TT_LEN;
+ }
+
+ fcs.value = INIT_FCS;
+
+ memset (buf, XBOF, 10);
+ len += 10;
+ buf[len++] = BOF;
+
+ for (i = 0; i < TT_LEN; ++i)
+ {
+ len += stuff_byte (i, buf + len);
+ fcs.value = irda_fcs (fcs.value, i);
+ }
+
+ len += stuff_byte (fcs.bytes[0] ^ badcrc, buf + len);
+ len += stuff_byte (fcs.bytes[1] ^ badcrc, buf + len);
+ buf[len++] = EOF;
+ len++;
+ return len;
+}
+
+static int
+toshoboe_probefail (struct toshoboe_cb *self, char *msg)
+{
+ printk (KERN_ERR DRIVER_NAME "probe(%d) failed %s\n",self-> speed, msg);
+ toshoboe_dumpregs (self);
+ toshoboe_stopchip (self);
+ free_irq (self->io.irq, (void *) self);
+ return 0;
+}
+
+static int
+toshoboe_numvalidrcvs (struct toshoboe_cb *self)
+{
+ int i, ret = 0;
+ for (i = 0; i < RX_SLOTS; ++i)
+ if ((self->ring->rx[i].control & 0xe0) == 0)
+ ret++;
+
+ return ret;
+}
+
+static int
+toshoboe_numrcvs (struct toshoboe_cb *self)
+{
+ int i, ret = 0;
+ for (i = 0; i < RX_SLOTS; ++i)
+ if (!(self->ring->rx[i].control & OBOE_CTL_RX_HW_OWNS))
+ ret++;
+
+ return ret;
+}
+
+static int
+toshoboe_probe (struct toshoboe_cb *self)
+{
+ int i, j, n;
+#ifdef USE_MIR
+ static const int bauds[] = { 9600, 115200, 4000000, 1152000 };
+#else
+ static const int bauds[] = { 9600, 115200, 4000000 };
+#endif
+ unsigned long flags;
+
+ if (request_irq (self->io.irq, toshoboe_probeinterrupt,
+ self->io.irqflags, "toshoboe", (void *) self))
+ {
+ printk (KERN_ERR DRIVER_NAME ": probe failed to allocate irq %d\n",
+ self->io.irq);
+ return 0;
+ }
+
+ /* test 1: SIR filter and back to back */
+
+ for (j = 0; j < ARRAY_SIZE(bauds); ++j)
+ {
+ int fir = (j > 1);
+ toshoboe_stopchip (self);
+
+
+ spin_lock_irqsave(&self->spinlock, flags);
+ /*Address is already setup */
+ toshoboe_startchip (self);
+ self->int_rx = self->int_tx = 0;
+ self->speed = bauds[j];
+ toshoboe_setbaud (self);
+ toshoboe_initptrs (self);
+ spin_unlock_irqrestore(&self->spinlock, flags);
+
+ self->ring->tx[self->txs].control =
+/* (FIR only) OBOE_CTL_TX_SIP needed for switching to next slot */
+/* MIR: all received data is stored in one slot */
+ (fir) ? OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX
+ : OBOE_CTL_TX_HW_OWNS ;
+ self->ring->tx[self->txs].len =
+ toshoboe_maketestpacket (self->tx_bufs[self->txs], 0, fir);
+ self->txs++;
+ self->txs %= TX_SLOTS;
+
+ self->ring->tx[self->txs].control =
+ (fir) ? OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_SIP
+ : OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX ;
+ self->ring->tx[self->txs].len =
+ toshoboe_maketestpacket (self->tx_bufs[self->txs], 0, fir);
+ self->txs++;
+ self->txs %= TX_SLOTS;
+
+ self->ring->tx[self->txs].control =
+ (fir) ? OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX
+ : OBOE_CTL_TX_HW_OWNS ;
+ self->ring->tx[self->txs].len =
+ toshoboe_maketestpacket (self->tx_bufs[self->txs], 0, fir);
+ self->txs++;
+ self->txs %= TX_SLOTS;
+
+ self->ring->tx[self->txs].control =
+ (fir) ? OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX
+ | OBOE_CTL_TX_SIP | OBOE_CTL_TX_BAD_CRC
+ : OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX ;
+ self->ring->tx[self->txs].len =
+ toshoboe_maketestpacket (self->tx_bufs[self->txs], 0, fir);
+ self->txs++;
+ self->txs %= TX_SLOTS;
+
+ toshoboe_dumptx (self);
+ /* Turn on TX and RX and loopback */
+ toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX | OBOE_CONFIG0H_LOOP);
+
+ i = 0;
+ n = fir ? 1 : 4;
+ while (toshoboe_numvalidrcvs (self) != n)
+ {
+ if (i > 4800)
+ return toshoboe_probefail (self, "filter test");
+ udelay ((9600*(TT_LEN+16))/self->speed);
+ i++;
+ }
+
+ n = fir ? 203 : 102;
+ while ((toshoboe_numrcvs(self) != self->int_rx) || (self->int_tx != n))
+ {
+ if (i > 4800)
+ return toshoboe_probefail (self, "interrupt test");
+ udelay ((9600*(TT_LEN+16))/self->speed);
+ i++;
+ }
+ toshoboe_dumprx (self,i);
+
+ }
+
+ /* test 2: SIR in char at a time */
+
+ toshoboe_stopchip (self);
+ self->int_rx = self->int_tx = 0;
+
+ spin_lock_irqsave(&self->spinlock, flags);
+ toshoboe_startchip (self);
+ spin_unlock_irqrestore(&self->spinlock, flags);
+
+ self->async = 1;
+ self->speed = 115200;
+ toshoboe_setbaud (self);
+ self->ring->tx[self->txs].control =
+ OBOE_CTL_TX_RTCENTX | OBOE_CTL_TX_HW_OWNS;
+ self->ring->tx[self->txs].len = 4;
+
+ ((unsigned char *) self->tx_bufs[self->txs])[0] = 'f';
+ ((unsigned char *) self->tx_bufs[self->txs])[1] = 'i';
+ ((unsigned char *) self->tx_bufs[self->txs])[2] = 's';
+ ((unsigned char *) self->tx_bufs[self->txs])[3] = 'h';
+ toshoboe_dumptx (self);
+ toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX | OBOE_CONFIG0H_LOOP);
+
+ i = 0;
+ while (toshoboe_numvalidrcvs (self) != 4)
+ {
+ if (i > 100)
+ return toshoboe_probefail (self, "Async test");
+ udelay (100);
+ i++;
+ }
+
+ while ((toshoboe_numrcvs (self) != self->int_rx) || (self->int_tx != 1))
+ {
+ if (i > 100)
+ return toshoboe_probefail (self, "Async interrupt test");
+ udelay (100);
+ i++;
+ }
+ toshoboe_dumprx (self,i);
+
+ self->async = 0;
+ self->speed = 9600;
+ toshoboe_setbaud (self);
+ toshoboe_stopchip (self);
+
+ free_irq (self->io.irq, (void *) self);
+
+ printk (KERN_WARNING DRIVER_NAME ": Self test passed ok\n");
+
+ return 1;
+}
+#endif
+
+/******************************************************************/
+/* Netdev style code */
+
+/* Transmit something */
+static netdev_tx_t
+toshoboe_hard_xmit (struct sk_buff *skb, struct net_device *dev)
+{
+ struct toshoboe_cb *self;
+ __s32 speed;
+ int mtt, len, ctl;
+ unsigned long flags;
+ struct irda_skb_cb *cb = (struct irda_skb_cb *) skb->cb;
+
+ self = netdev_priv(dev);
+
+ IRDA_ASSERT (self != NULL, return NETDEV_TX_OK; );
+
+ pr_debug("%s.tx:%x(%x)%x\n",
+ __func__, skb->len, self->txpending, INB(OBOE_ENABLEH));
+ if (!cb->magic) {
+ pr_debug("%s.Not IrLAP:%x\n", __func__, cb->magic);
+#ifdef DUMP_PACKETS
+ _dumpbufs(skb->data,skb->len,'>');
+#endif
+ }
+
+ /* change speed pending, wait for its execution */
+ if (self->new_speed)
+ return NETDEV_TX_BUSY;
+
+ /* device stopped (apm) wait for restart */
+ if (self->stopped)
+ return NETDEV_TX_BUSY;
+
+ toshoboe_checkstuck (self);
+
+ /* Check if we need to change the speed */
+ /* But not now. Wait after transmission if mtt not required */
+ speed=irda_get_next_speed(skb);
+ if ((speed != self->io.speed) && (speed != -1))
+ {
+ spin_lock_irqsave(&self->spinlock, flags);
+
+ if (self->txpending || skb->len)
+ {
+ self->new_speed = speed;
+ pr_debug("%s: Queued TxDone scheduled speed change %d\n" ,
+ __func__, speed);
+ /* if no data, that's all! */
+ if (!skb->len)
+ {
+ spin_unlock_irqrestore(&self->spinlock, flags);
+ dev_kfree_skb (skb);
+ return NETDEV_TX_OK;
+ }
+ /* True packet, go on, but */
+ /* do not accept anything before change speed execution */
+ netif_stop_queue(dev);
+ /* ready to process TxDone interrupt */
+ spin_unlock_irqrestore(&self->spinlock, flags);
+ }
+ else
+ {
+ /* idle and no data, change speed now */
+ self->speed = speed;
+ toshoboe_setbaud (self);
+ spin_unlock_irqrestore(&self->spinlock, flags);
+ dev_kfree_skb (skb);
+ return NETDEV_TX_OK;
+ }
+
+ }
+
+ if ((mtt = irda_get_mtt(skb)))
+ {
+ /* This is fair since the queue should be empty anyway */
+ spin_lock_irqsave(&self->spinlock, flags);
+
+ if (self->txpending)
+ {
+ spin_unlock_irqrestore(&self->spinlock, flags);
+ return NETDEV_TX_BUSY;
+ }
+
+ /* If in SIR mode we need to generate a string of XBOFs */
+ /* In MIR and FIR we need to generate a string of data */
+ /* which we will add a wrong checksum to */
+
+ mtt = toshoboe_makemttpacket (self, self->tx_bufs[self->txs], mtt);
+ pr_debug("%s.mtt:%x(%x)%d\n", __func__, skb->len, mtt, self->txpending);
+ if (mtt)
+ {
+ self->ring->tx[self->txs].len = mtt & 0xfff;
+
+ ctl = OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX;
+ if (INB (OBOE_ENABLEH) & OBOE_ENABLEH_FIRON)
+ {
+ ctl |= OBOE_CTL_TX_BAD_CRC | OBOE_CTL_TX_SIP ;
+ }
+#ifdef USE_MIR
+ else if (INB (OBOE_ENABLEH) & OBOE_ENABLEH_MIRON)
+ {
+ ctl |= OBOE_CTL_TX_BAD_CRC;
+ }
+#endif
+ self->ring->tx[self->txs].control = ctl;
+
+ OUTB (0x0, OBOE_ENABLEH);
+ /* It is only a timer. Do not send mtt packet outside! */
+ toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX | OBOE_CONFIG0H_LOOP);
+
+ self->txpending++;
+
+ self->txs++;
+ self->txs %= TX_SLOTS;
+
+ }
+ else
+ {
+ printk(KERN_ERR DRIVER_NAME ": problem with mtt packet - ignored\n");
+ }
+ spin_unlock_irqrestore(&self->spinlock, flags);
+ }
+
+#ifdef DUMP_PACKETS
+dumpbufs(skb->data,skb->len,'>');
+#endif
+
+ spin_lock_irqsave(&self->spinlock, flags);
+
+ if (self->ring->tx[self->txs].control & OBOE_CTL_TX_HW_OWNS)
+ {
+ pr_debug("%s.ful:%x(%x)%x\n",
+ __func__, skb->len, self->ring->tx[self->txs].control,
+ self->txpending);
+ toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX);
+ spin_unlock_irqrestore(&self->spinlock, flags);
+ return NETDEV_TX_BUSY;
+ }
+
+ if (INB (OBOE_ENABLEH) & OBOE_ENABLEH_SIRON)
+ {
+ len = async_wrap_skb (skb, self->tx_bufs[self->txs], TX_BUF_SZ);
+ }
+ else
+ {
+ len = skb->len;
+ skb_copy_from_linear_data(skb, self->tx_bufs[self->txs], len);
+ }
+ self->ring->tx[self->txs].len = len & 0x0fff;
+
+ /*Sometimes the HW doesn't see us assert RTCENTX in the interrupt code */
+ /*later this plays safe, we garuntee the last packet to be transmitted */
+ /*has RTCENTX set */
+
+ ctl = OBOE_CTL_TX_HW_OWNS | OBOE_CTL_TX_RTCENTX;
+ if (INB (OBOE_ENABLEH) & OBOE_ENABLEH_FIRON)
+ {
+ ctl |= OBOE_CTL_TX_SIP ;
+ }
+ self->ring->tx[self->txs].control = ctl;
+
+ /* If transmitter is idle start in one-shot mode */
+
+ if (!self->txpending)
+ toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX);
+
+ self->txpending++;
+
+ self->txs++;
+ self->txs %= TX_SLOTS;
+
+ spin_unlock_irqrestore(&self->spinlock, flags);
+ dev_kfree_skb (skb);
+
+ return NETDEV_TX_OK;
+}
+
+/*interrupt handler */
+static irqreturn_t
+toshoboe_interrupt (int irq, void *dev_id)
+{
+ struct toshoboe_cb *self = dev_id;
+ __u8 irqstat;
+ struct sk_buff *skb = NULL;
+
+ irqstat = INB (OBOE_ISR);
+
+/* was it us */
+ if (!(irqstat & OBOE_INT_MASK))
+ return IRQ_NONE;
+
+/* Ack all the interrupts */
+ OUTB (irqstat, OBOE_ISR);
+
+ toshoboe_isntstuck (self);
+
+/* Txdone */
+ if (irqstat & OBOE_INT_TXDONE)
+ {
+ int txp, txpc;
+ int i;
+
+ txp = self->txpending;
+ self->txpending = 0;
+
+ for (i = 0; i < TX_SLOTS; ++i)
+ {
+ if (self->ring->tx[i].control & OBOE_CTL_TX_HW_OWNS)
+ self->txpending++;
+ }
+ pr_debug("%s.txd(%x)%x/%x\n", __func__, irqstat, txp, self->txpending);
+
+ txp = INB (OBOE_TXSLOT) & OBOE_SLOT_MASK;
+
+ /* Got anything queued ? start it together */
+ if (self->ring->tx[txp].control & OBOE_CTL_TX_HW_OWNS)
+ {
+ txpc = txp;
+#ifdef OPTIMIZE_TX
+ while (self->ring->tx[txpc].control & OBOE_CTL_TX_HW_OWNS)
+ {
+ txp = txpc;
+ txpc++;
+ txpc %= TX_SLOTS;
+ self->netdev->stats.tx_packets++;
+ if (self->ring->tx[txpc].control & OBOE_CTL_TX_HW_OWNS)
+ self->ring->tx[txp].control &= ~OBOE_CTL_TX_RTCENTX;
+ }
+ self->netdev->stats.tx_packets--;
+#else
+ self->netdev->stats.tx_packets++;
+#endif
+ toshoboe_start_DMA(self, OBOE_CONFIG0H_ENTX);
+ }
+
+ if ((!self->txpending) && (self->new_speed))
+ {
+ self->speed = self->new_speed;
+ pr_debug("%s: Executed TxDone scheduled speed change %d\n",
+ __func__, self->speed);
+ toshoboe_setbaud (self);
+ }
+
+ /* Tell network layer that we want more frames */
+ if (!self->new_speed)
+ netif_wake_queue(self->netdev);
+ }
+
+ if (irqstat & OBOE_INT_RXDONE)
+ {
+ while (!(self->ring->rx[self->rxs].control & OBOE_CTL_RX_HW_OWNS))
+ {
+ int len = self->ring->rx[self->rxs].len;
+ skb = NULL;
+ pr_debug("%s.rcv:%x(%x)\n", __func__
+ , len, self->ring->rx[self->rxs].control);
+
+#ifdef DUMP_PACKETS
+dumpbufs(self->rx_bufs[self->rxs],len,'<');
+#endif
+
+ if (self->ring->rx[self->rxs].control == 0)
+ {
+ __u8 enable = INB (OBOE_ENABLEH);
+
+ /* In SIR mode we need to check the CRC as this */
+ /* hasn't been done by the hardware */
+ if (enable & OBOE_ENABLEH_SIRON)
+ {
+ if (!toshoboe_checkfcs (self->rx_bufs[self->rxs], len))
+ len = 0;
+ /*Trim off the CRC */
+ if (len > 1)
+ len -= 2;
+ else
+ len = 0;
+ pr_debug("%s.SIR:%x(%x)\n", __func__, len, enable);
+ }
+
+#ifdef USE_MIR
+ else if (enable & OBOE_ENABLEH_MIRON)
+ {
+ if (len > 1)
+ len -= 2;
+ else
+ len = 0;
+ pr_debug("%s.MIR:%x(%x)\n", __func__, len, enable);
+ }
+#endif
+ else if (enable & OBOE_ENABLEH_FIRON)
+ {
+ if (len > 3)
+ len -= 4; /*FIXME: check this */
+ else
+ len = 0;
+ pr_debug("%s.FIR:%x(%x)\n", __func__, len, enable);
+ }
+ else
+ pr_debug("%s.?IR:%x(%x)\n", __func__, len, enable);
+
+ if (len)
+ {
+ skb = dev_alloc_skb (len + 1);
+ if (skb)
+ {
+ skb_reserve (skb, 1);
+
+ skb_put (skb, len);
+ skb_copy_to_linear_data(skb, self->rx_bufs[self->rxs],
+ len);
+ self->netdev->stats.rx_packets++;
+ skb->dev = self->netdev;
+ skb_reset_mac_header(skb);
+ skb->protocol = htons (ETH_P_IRDA);
+ }
+ else
+ {
+ printk (KERN_INFO
+ "%s(), memory squeeze, dropping frame.\n",
+ __func__);
+ }
+ }
+ }
+ else
+ {
+ /* TODO: =========================================== */
+ /* if OBOE_CTL_RX_LENGTH, our buffers are too small */
+ /* (MIR or FIR) data is lost. */
+ /* (SIR) data is splitted in several slots. */
+ /* we have to join all the received buffers received */
+ /*in a large buffer before checking CRC. */
+ pr_debug("%s.err:%x(%x)\n", __func__
+ , len, self->ring->rx[self->rxs].control);
+ }
+
+ self->ring->rx[self->rxs].len = 0x0;
+ self->ring->rx[self->rxs].control = OBOE_CTL_RX_HW_OWNS;
+
+ self->rxs++;
+ self->rxs %= RX_SLOTS;
+
+ if (skb)
+ netif_rx (skb);
+
+ }
+ }
+
+ if (irqstat & OBOE_INT_TXUNDER)
+ {
+ printk (KERN_WARNING DRIVER_NAME ": tx fifo underflow\n");
+ }
+ if (irqstat & OBOE_INT_RXOVER)
+ {
+ printk (KERN_WARNING DRIVER_NAME ": rx fifo overflow\n");
+ }
+/* This must be useful for something... */
+ if (irqstat & OBOE_INT_SIP)
+ {
+ self->int_sip++;
+ pr_debug("%s.sip:%x(%x)%x\n",
+ __func__, self->int_sip, irqstat, self->txpending);
+ }
+ return IRQ_HANDLED;
+}
+
+
+static int
+toshoboe_net_open (struct net_device *dev)
+{
+ struct toshoboe_cb *self;
+ unsigned long flags;
+ int rc;
+
+ self = netdev_priv(dev);
+
+ if (self->async)
+ return -EBUSY;
+
+ if (self->stopped)
+ return 0;
+
+ rc = request_irq (self->io.irq, toshoboe_interrupt,
+ IRQF_SHARED, dev->name, self);
+ if (rc)
+ return rc;
+
+ spin_lock_irqsave(&self->spinlock, flags);
+ toshoboe_startchip (self);
+ spin_unlock_irqrestore(&self->spinlock, flags);
+
+ /* Ready to play! */
+ netif_start_queue(dev);
+
+ /*
+ * Open new IrLAP layer instance, now that everything should be
+ * initialized properly
+ */
+ self->irlap = irlap_open (dev, &self->qos, driver_name);
+
+ self->irdad = 1;
+
+ return 0;
+}
+
+static int
+toshoboe_net_close (struct net_device *dev)
+{
+ struct toshoboe_cb *self;
+
+ IRDA_ASSERT (dev != NULL, return -1; );
+ self = netdev_priv(dev);
+
+ /* Stop device */
+ netif_stop_queue(dev);
+
+ /* Stop and remove instance of IrLAP */
+ if (self->irlap)
+ irlap_close (self->irlap);
+ self->irlap = NULL;
+
+ self->irdad = 0;
+
+ free_irq (self->io.irq, (void *) self);
+
+ if (!self->stopped)
+ {
+ toshoboe_stopchip (self);
+ }
+
+ return 0;
+}
+
+/*
+ * Function toshoboe_net_ioctl (dev, rq, cmd)
+ *
+ * Process IOCTL commands for this device
+ *
+ */
+static int
+toshoboe_net_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct if_irda_req *irq = (struct if_irda_req *) rq;
+ struct toshoboe_cb *self;
+ unsigned long flags;
+ int ret = 0;
+
+ IRDA_ASSERT (dev != NULL, return -1; );
+
+ self = netdev_priv(dev);
+
+ IRDA_ASSERT (self != NULL, return -1; );
+
+ pr_debug("%s(), %s, (cmd=0x%X)\n", __func__, dev->name, cmd);
+
+ /* Disable interrupts & save flags */
+ spin_lock_irqsave(&self->spinlock, flags);
+
+ switch (cmd)
+ {
+ case SIOCSBANDWIDTH: /* Set bandwidth */
+ /* This function will also be used by IrLAP to change the
+ * speed, so we still must allow for speed change within
+ * interrupt context.
+ */
+ pr_debug("%s(BANDWIDTH), %s, (%X/%ld\n",
+ __func__, dev->name, INB(OBOE_STATUS), irq->ifr_baudrate);
+ if (!in_interrupt () && !capable (CAP_NET_ADMIN)) {
+ ret = -EPERM;
+ goto out;
+ }
+
+ /* self->speed=irq->ifr_baudrate; */
+ /* toshoboe_setbaud(self); */
+ /* Just change speed once - inserted by Paul Bristow */
+ self->new_speed = irq->ifr_baudrate;
+ break;
+ case SIOCSMEDIABUSY: /* Set media busy */
+ pr_debug("%s(MEDIABUSY), %s, (%X/%x)\n",
+ __func__, dev->name,
+ INB(OBOE_STATUS), capable(CAP_NET_ADMIN));
+ if (!capable (CAP_NET_ADMIN)) {
+ ret = -EPERM;
+ goto out;
+ }
+ irda_device_set_media_busy (self->netdev, TRUE);
+ break;
+ case SIOCGRECEIVING: /* Check if we are receiving right now */
+ irq->ifr_receiving = (INB (OBOE_STATUS) & OBOE_STATUS_RXBUSY) ? 1 : 0;
+ pr_debug("%s(RECEIVING), %s, (%X/%x)\n",
+ __func__, dev->name, INB(OBOE_STATUS), irq->ifr_receiving);
+ break;
+ default:
+ pr_debug("%s(?), %s, (cmd=0x%X)\n", __func__, dev->name, cmd);
+ ret = -EOPNOTSUPP;
+ }
+out:
+ spin_unlock_irqrestore(&self->spinlock, flags);
+ return ret;
+
+}
+
+MODULE_DESCRIPTION("Toshiba OBOE IrDA Device Driver");
+MODULE_AUTHOR("James McKenzie <james@fishsoup.dhs.org>");
+MODULE_LICENSE("GPL");
+
+module_param (max_baud, int, 0);
+MODULE_PARM_DESC(max_baud, "Maximum baud rate");
+
+#ifdef USE_PROBE
+module_param (do_probe, bool, 0);
+MODULE_PARM_DESC(do_probe, "Enable/disable chip probing and self-test");
+#endif
+
+static void
+toshoboe_close (struct pci_dev *pci_dev)
+{
+ int i;
+ struct toshoboe_cb *self = pci_get_drvdata(pci_dev);
+
+ IRDA_ASSERT (self != NULL, return; );
+
+ if (!self->stopped)
+ {
+ toshoboe_stopchip (self);
+ }
+
+ release_region (self->io.fir_base, self->io.fir_ext);
+
+ for (i = 0; i < TX_SLOTS; ++i)
+ {
+ kfree (self->tx_bufs[i]);
+ self->tx_bufs[i] = NULL;
+ }
+
+ for (i = 0; i < RX_SLOTS; ++i)
+ {
+ kfree (self->rx_bufs[i]);
+ self->rx_bufs[i] = NULL;
+ }
+
+ unregister_netdev(self->netdev);
+
+ kfree (self->ringbuf);
+ self->ringbuf = NULL;
+ self->ring = NULL;
+
+ free_netdev(self->netdev);
+}
+
+static const struct net_device_ops toshoboe_netdev_ops = {
+ .ndo_open = toshoboe_net_open,
+ .ndo_stop = toshoboe_net_close,
+ .ndo_start_xmit = toshoboe_hard_xmit,
+ .ndo_do_ioctl = toshoboe_net_ioctl,
+};
+
+static int
+toshoboe_open (struct pci_dev *pci_dev, const struct pci_device_id *pdid)
+{
+ struct toshoboe_cb *self;
+ struct net_device *dev;
+ int i = 0;
+ int ok = 0;
+ int err;
+
+ if ((err=pci_enable_device(pci_dev)))
+ return err;
+
+ dev = alloc_irdadev(sizeof (struct toshoboe_cb));
+ if (dev == NULL)
+ {
+ printk (KERN_ERR DRIVER_NAME ": can't allocate memory for "
+ "IrDA control block\n");
+ return -ENOMEM;
+ }
+
+ self = netdev_priv(dev);
+ self->netdev = dev;
+ self->pdev = pci_dev;
+ self->base = pci_resource_start(pci_dev,0);
+
+ self->io.fir_base = self->base;
+ self->io.fir_ext = OBOE_IO_EXTENT;
+ self->io.irq = pci_dev->irq;
+ self->io.irqflags = IRQF_SHARED;
+
+ self->speed = self->io.speed = 9600;
+ self->async = 0;
+
+ /* Lock the port that we need */
+ if (NULL==request_region (self->io.fir_base, self->io.fir_ext, driver_name))
+ {
+ printk (KERN_ERR DRIVER_NAME ": can't get iobase of 0x%03x\n"
+ ,self->io.fir_base);
+ err = -EBUSY;
+ goto freeself;
+ }
+
+ spin_lock_init(&self->spinlock);
+
+ irda_init_max_qos_capabilies (&self->qos);
+ self->qos.baud_rate.bits = 0;
+
+ if (max_baud >= 2400)
+ self->qos.baud_rate.bits |= IR_2400;
+ /*if (max_baud>=4800) idev->qos.baud_rate.bits|=IR_4800; */
+ if (max_baud >= 9600)
+ self->qos.baud_rate.bits |= IR_9600;
+ if (max_baud >= 19200)
+ self->qos.baud_rate.bits |= IR_19200;
+ if (max_baud >= 115200)
+ self->qos.baud_rate.bits |= IR_115200;
+#ifdef USE_MIR
+ if (max_baud >= 1152000)
+ {
+ self->qos.baud_rate.bits |= IR_1152000;
+ }
+#endif
+ if (max_baud >= 4000000)
+ {
+ self->qos.baud_rate.bits |= (IR_4000000 << 8);
+ }
+
+ /*FIXME: work this out... */
+ self->qos.min_turn_time.bits = 0xff;
+
+ irda_qos_bits_to_value (&self->qos);
+
+ /* Allocate twice the size to guarantee alignment */
+ self->ringbuf = kmalloc(OBOE_RING_LEN << 1, GFP_KERNEL);
+ if (!self->ringbuf)
+ {
+ err = -ENOMEM;
+ goto freeregion;
+ }
+
+#if (BITS_PER_LONG == 64)
+#error broken on 64-bit: casts pointer to 32-bit, and then back to pointer.
+#endif
+
+ /*We need to align the taskfile on a taskfile size boundary */
+ {
+ unsigned long addr;
+
+ addr = (__u32) self->ringbuf;
+ addr &= ~(OBOE_RING_LEN - 1);
+ addr += OBOE_RING_LEN;
+ self->ring = (struct OboeRing *) addr;
+ }
+
+ memset (self->ring, 0, OBOE_RING_LEN);
+ self->io.mem_base = (__u32) self->ring;
+
+ ok = 1;
+ for (i = 0; i < TX_SLOTS; ++i)
+ {
+ self->tx_bufs[i] = kmalloc (TX_BUF_SZ, GFP_KERNEL);
+ if (!self->tx_bufs[i])
+ ok = 0;
+ }
+
+ for (i = 0; i < RX_SLOTS; ++i)
+ {
+ self->rx_bufs[i] = kmalloc (RX_BUF_SZ, GFP_KERNEL);
+ if (!self->rx_bufs[i])
+ ok = 0;
+ }
+
+ if (!ok)
+ {
+ err = -ENOMEM;
+ goto freebufs;
+ }
+
+
+#ifdef USE_PROBE
+ if (do_probe)
+ if (!toshoboe_probe (self))
+ {
+ err = -ENODEV;
+ goto freebufs;
+ }
+#endif
+
+ SET_NETDEV_DEV(dev, &pci_dev->dev);
+ dev->netdev_ops = &toshoboe_netdev_ops;
+
+ err = register_netdev(dev);
+ if (err)
+ {
+ printk (KERN_ERR DRIVER_NAME ": register_netdev() failed\n");
+ err = -ENOMEM;
+ goto freebufs;
+ }
+ printk (KERN_INFO "IrDA: Registered device %s\n", dev->name);
+
+ pci_set_drvdata(pci_dev,self);
+
+ printk (KERN_INFO DRIVER_NAME ": Using multiple tasks\n");
+
+ return 0;
+
+freebufs:
+ for (i = 0; i < TX_SLOTS; ++i)
+ kfree (self->tx_bufs[i]);
+ for (i = 0; i < RX_SLOTS; ++i)
+ kfree (self->rx_bufs[i]);
+ kfree(self->ringbuf);
+
+freeregion:
+ release_region (self->io.fir_base, self->io.fir_ext);
+
+freeself:
+ free_netdev(dev);
+
+ return err;
+}
+
+static int
+toshoboe_gotosleep (struct pci_dev *pci_dev, pm_message_t crap)
+{
+ struct toshoboe_cb *self = pci_get_drvdata(pci_dev);
+ unsigned long flags;
+ int i = 10;
+
+ if (!self || self->stopped)
+ return 0;
+
+ if ((!self->irdad) && (!self->async))
+ return 0;
+
+/* Flush all packets */
+ while ((i--) && (self->txpending))
+ msleep(10);
+
+ spin_lock_irqsave(&self->spinlock, flags);
+
+ toshoboe_stopchip (self);
+ self->stopped = 1;
+ self->txpending = 0;
+
+ spin_unlock_irqrestore(&self->spinlock, flags);
+ return 0;
+}
+
+static int
+toshoboe_wakeup (struct pci_dev *pci_dev)
+{
+ struct toshoboe_cb *self = pci_get_drvdata(pci_dev);
+ unsigned long flags;
+
+ if (!self || !self->stopped)
+ return 0;
+
+ if ((!self->irdad) && (!self->async))
+ return 0;
+
+ spin_lock_irqsave(&self->spinlock, flags);
+
+ toshoboe_startchip (self);
+ self->stopped = 0;
+
+ netif_wake_queue(self->netdev);
+ spin_unlock_irqrestore(&self->spinlock, flags);
+ return 0;
+}
+
+static struct pci_driver donauboe_pci_driver = {
+ .name = "donauboe",
+ .id_table = toshoboe_pci_tbl,
+ .probe = toshoboe_open,
+ .remove = toshoboe_close,
+ .suspend = toshoboe_gotosleep,
+ .resume = toshoboe_wakeup
+};
+
+module_pci_driver(donauboe_pci_driver);
Code Review / kvmfornfv.git / blobdiff