| /***************************************************************** |
| * |
| * 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 DEFINE_PCI_DEVICE_TABLE(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; |
| IRDA_DEBUG (2, "%c%s\n",head , dump); |
| head='+'; |
| } |
| } |
| #endif |
| |
| #ifdef USE_PROBE |
| /* Dump the registers */ |
| static void |
| toshoboe_dumpregs (struct toshoboe_cb *self) |
| { |
| __u32 ringbase; |
| |
| IRDA_DEBUG (4, "%s()\n", __func__); |
| |
| 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; |
| IRDA_DEBUG (4, "%s()\n", __func__); |
| |
| 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) |
| { |
| IRDA_DEBUG (4, "%s()\n", __func__); |
| |
| /*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; |
| |
| IRDA_DEBUG (2, "%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) |
| { |
| IRDA_DEBUG (4, "%s()\n", __func__); |
| pci_set_master (self->pdev); |
| } |
| |
| /*setup the ring */ |
| static void |
| toshoboe_initring (struct toshoboe_cb *self) |
| { |
| int i; |
| |
| IRDA_DEBUG (4, "%s()\n", __func__); |
| |
| 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; |
| |
| IRDA_DEBUG (4, "%s()\n", __func__); |
| |
| 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++; |
| |
| IRDA_DEBUG (2, 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; |
| |
| IRDA_DEBUG (4, "%s()\n", __func__); |
| |
| 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; ); |
| |
| IRDA_DEBUG (1, "%s.tx:%x(%x)%x\n", __func__ |
| ,skb->len,self->txpending,INB (OBOE_ENABLEH)); |
| if (!cb->magic) { |
| IRDA_DEBUG (2, "%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; |
| IRDA_DEBUG (1, "%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); |
| IRDA_DEBUG (1, "%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) |
| { |
| IRDA_DEBUG (0, "%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++; |
| } |
| IRDA_DEBUG (1, "%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; |
| IRDA_DEBUG (1, "%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; |
| IRDA_DEBUG (3, "%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; |
| IRDA_DEBUG (1, "%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; |
| IRDA_DEBUG (2, "%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; |
| IRDA_DEBUG (1, "%s.FIR:%x(%x)\n", __func__, len,enable); |
| } |
| else |
| IRDA_DEBUG (0, "%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. */ |
| IRDA_DEBUG (0, "%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++; |
| IRDA_DEBUG (1, "%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; |
| |
| IRDA_DEBUG (4, "%s()\n", __func__); |
| |
| self = netdev_priv(dev); |
| |
| if (self->async) |
| return -EBUSY; |
| |
| if (self->stopped) |
| return 0; |
| |
| rc = request_irq (self->io.irq, toshoboe_interrupt, |
| IRQF_SHARED | IRQF_DISABLED, 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_DEBUG (4, "%s()\n", __func__); |
| |
| 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; ); |
| |
| IRDA_DEBUG (5, "%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. |
| */ |
| IRDA_DEBUG (1, "%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 */ |
| IRDA_DEBUG (1, "%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; |
| IRDA_DEBUG (3, "%s(RECEIVING), %s, (%X/%x)\n", __func__ |
| ,dev->name, INB (OBOE_STATUS), irq->ifr_receiving ); |
| break; |
| default: |
| IRDA_DEBUG (1, "%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_DEBUG (4, "%s()\n", __func__); |
| |
| 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; |
| |
| IRDA_DEBUG (4, "%s()\n", __func__); |
| |
| 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 | IRQF_DISABLED; |
| |
| 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; |
| |
| IRDA_DEBUG (4, "%s()\n", __func__); |
| |
| 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; |
| |
| IRDA_DEBUG (4, "%s()\n", __func__); |
| |
| 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 |
| }; |
| |
| static int __init |
| donauboe_init (void) |
| { |
| return pci_register_driver(&donauboe_pci_driver); |
| } |
| |
| static void __exit |
| donauboe_cleanup (void) |
| { |
| pci_unregister_driver(&donauboe_pci_driver); |
| } |
| |
| module_init(donauboe_init); |
| module_exit(donauboe_cleanup); |