Merge with Linux 2.3.40.

1 files changed, 1469 insertions, 0 deletions

diff --git a/drivers/ieee1394/pcilynx.c b/drivers/ieee1394/pcilynx.c
new file mode 100644
index 000000000..ae87337f2
--- /dev/null
+++ b/drivers/ieee1394/pcilynx.c
@@ -0,0 +1,1469 @@
+/*
+ * ti_pcilynx.c - Texas Instruments PCILynx driver
+ * Copyright (C) 1999,2000 Andreas Bombe <andreas.bombe@munich.netsurf.de>,
+ *                         Stephan Linz <linz@mazet.de>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/*
+ * Lynx DMA usage:
+ *
+ * 0 is used for Lynx local bus transfers
+ * 1 is async/selfid receive
+ * 2 is iso receive
+ * 3 is async transmit
+ */
+
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/wait.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/fs.h>
+#include <linux/poll.h>
+#include <asm/byteorder.h>
+#include <asm/atomic.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+
+#include "ieee1394.h"
+#include "ieee1394_types.h"
+#include "hosts.h"
+#include "ieee1394_core.h"
+#include "pcilynx.h"
+
+
+#if MAX_PCILYNX_CARDS > PCILYNX_MINOR_ROM_START
+#error Max number of cards is bigger than PCILYNX_MINOR_ROM_START - this does not work.
+#endif
+
+/* print general (card independent) information */
+#define PRINT_G(level, fmt, args...) printk(level "pcilynx: " fmt "\n" , ## args)
+/* print card specific information */
+#define PRINT(level, card, fmt, args...) printk(level "pcilynx%d: " fmt "\n" , card , ## args)
+
+
+static struct ti_lynx cards[MAX_PCILYNX_CARDS];
+static int num_of_cards = 0;
+
+
+/*
+ * PCL handling functions.
+ */
+
+static pcl_t alloc_pcl(struct ti_lynx *lynx)
+{
+        u8 m;
+        int i, j;
+
+        spin_lock(&lynx->lock);
+        /* FIXME - use ffz() to make this readable */
+        for (i = 0; i < LOCALRAM_SIZE; i++) {
+                m = lynx->pcl_bmap[i];
+                for (j = 0; j < 8; j++) {
+                        if (m & 1<<j) {
+                                continue;
+                        }
+                        m |= 1<<j;
+                        lynx->pcl_bmap[i] = m;
+                        spin_unlock(&lynx->lock);
+                        return 8 * i + j;
+                }
+        }
+        spin_unlock(&lynx->lock);
+
+        return -1;
+}
+
+static void free_pcl(struct ti_lynx *lynx, pcl_t pclid)
+{
+        int off, bit;
+
+        off = pclid / 8;
+        bit = pclid % 8;
+
+        if (pclid < 0) {
+                return;
+        }
+
+        spin_lock(&lynx->lock);
+        if (lynx->pcl_bmap[off] & 1<<bit) {
+                lynx->pcl_bmap[off] &= ~(1<<bit);
+        } else {
+                PRINT(KERN_ERR, lynx->id, 
+                      "attempted to free unallocated PCL %d", pclid);
+        }
+        spin_unlock(&lynx->lock);
+}
+
+/* functions useful for debugging */        
+static void pretty_print_pcl(const struct ti_pcl *pcl)
+{
+        int i;
+
+        printk("PCL next %08x, userdata %08x, status %08x, remtrans %08x, nextbuf %08x\n",
+               pcl->next, pcl->user_data, pcl->pcl_status, 
+               pcl->remaining_transfer_count, pcl->next_data_buffer);
+
+        printk("PCL");
+        for (i=0; i<13; i++) {
+                printk(" c%x:%08x d%x:%08x",
+                       i, pcl->buffer[i].control, i, pcl->buffer[i].pointer);
+                if (!(i & 0x3) && (i != 12)) printk("\nPCL");
+        }
+        printk("\n");
+}
+        
+static void print_pcl(const struct ti_lynx *lynx, pcl_t pclid)
+{
+        struct ti_pcl pcl;
+
+        get_pcl(lynx, pclid, &pcl);
+        pretty_print_pcl(&pcl);
+}
+
+
+static int add_card(struct pci_dev *dev);
+static void remove_card(struct ti_lynx *lynx);
+static int init_driver(void);
+
+
+
+
+/***********************************
+ * IEEE-1394 functionality section *
+ ***********************************/
+
+
+static int get_phy_reg(struct ti_lynx *lynx, int addr)
+{
+        int retval;
+        int i = 0;
+
+        unsigned long flags;
+
+        if (addr > 15) {
+                PRINT(KERN_ERR, lynx->id, __FUNCTION__
+                      ": PHY register address %d out of range", addr);
+                return -1;
+        }
+
+        spin_lock_irqsave(&lynx->phy_reg_lock, flags);
+
+        do {
+                reg_write(lynx, LINK_PHY, LINK_PHY_READ | LINK_PHY_ADDR(addr));
+                retval = reg_read(lynx, LINK_PHY);
+
+                if (i > 10000) {
+                        PRINT(KERN_ERR, lynx->id, __FUNCTION__ 
+                              ": runaway loop, aborting");
+                        retval = -1;
+                        break;
+                }
+                i++;
+        } while ((retval & 0xf00) != LINK_PHY_RADDR(addr));
+
+        reg_write(lynx, LINK_INT_STATUS, LINK_INT_PHY_REG_RCVD);
+        spin_unlock_irqrestore(&lynx->phy_reg_lock, flags);
+
+        if (retval != -1) {
+                return retval & 0xff;
+        } else {
+                return -1;
+        }
+}
+
+static int set_phy_reg(struct ti_lynx *lynx, int addr, int val)
+{
+        unsigned long flags;
+
+        if (addr > 15) {
+                PRINT(KERN_ERR, lynx->id, __FUNCTION__
+                      ": PHY register address %d out of range", addr);
+                return -1;
+        }
+
+        if (val > 0xff) {
+                PRINT(KERN_ERR, lynx->id, __FUNCTION__
+                      ": PHY register value %d out of range", val);
+                return -1;
+        }
+
+        spin_lock_irqsave(&lynx->phy_reg_lock, flags);
+
+        reg_write(lynx, LINK_PHY, LINK_PHY_WRITE | LINK_PHY_ADDR(addr)
+                  | LINK_PHY_WDATA(val));
+
+        spin_unlock_irqrestore(&lynx->phy_reg_lock, flags);
+
+        return 0;
+}
+
+static int sel_phy_reg_page(struct ti_lynx *lynx, int page)
+{
+        int reg;
+
+        if (page > 7) {
+                PRINT(KERN_ERR, lynx->id, __FUNCTION__
+                      ": PHY page %d out of range", page);
+                return -1;
+        }
+
+        reg = get_phy_reg(lynx, 7);
+        if (reg != -1) {
+                reg &= 0x1f;
+                reg |= (page << 5);
+                set_phy_reg(lynx, 7, reg);
+                return 0;
+        } else {
+                return -1;
+        }
+}
+
+#if 0 /* not needed at this time */
+static int sel_phy_reg_port(struct ti_lynx *lynx, int port)
+{
+        int reg;
+
+        if (port > 15) {
+                PRINT(KERN_ERR, lynx->id, __FUNCTION__
+                      ": PHY port %d out of range", port);
+                return -1;
+        }
+
+        reg = get_phy_reg(lynx, 7);
+        if (reg != -1) {
+                reg &= 0xf0;
+                reg |= port;
+                set_phy_reg(lynx, 7, reg);
+                return 0;
+        } else {
+                return -1;
+        }
+}
+#endif
+
+static u32 get_phy_vendorid(struct ti_lynx *lynx)
+{
+        u32 pvid = 0;
+        sel_phy_reg_page(lynx, 1);
+        pvid |= (get_phy_reg(lynx, 10) << 16);
+        pvid |= (get_phy_reg(lynx, 11) << 8);
+        pvid |= get_phy_reg(lynx, 12);
+        PRINT(KERN_INFO, lynx->id, "PHY vendor id 0x%06x", pvid);
+        return pvid;
+}
+
+static u32 get_phy_productid(struct ti_lynx *lynx)
+{
+        u32 id = 0;
+        sel_phy_reg_page(lynx, 1);
+        id |= (get_phy_reg(lynx, 13) << 16);
+        id |= (get_phy_reg(lynx, 14) << 8);
+        id |= get_phy_reg(lynx, 15);
+        PRINT(KERN_INFO, lynx->id, "PHY product id 0x%06x", id);
+        return id;
+}
+
+static quadlet_t generate_own_selfid(struct ti_lynx *lynx,
+                                     struct hpsb_host *host)
+{
+        quadlet_t lsid;
+        char phyreg[7];
+        int i;
+
+        for (i = 0; i < 7; i++) {
+                phyreg[i] = get_phy_reg(lynx, i);
+        }
+
+        /* FIXME? We assume a TSB21LV03A phy here.  This code doesn't support
+           more than 3 ports on the PHY anyway. */
+
+        lsid = 0x80400000 | ((phyreg[0] & 0xfc) << 22);
+        lsid |= (phyreg[1] & 0x3f) << 16; /* gap count */
+        lsid |= (phyreg[2] & 0xc0) << 8; /* max speed */
+        /* lsid |= (phyreg[6] & 0x01) << 11; *//* contender (phy dependent) */
+        lsid |= 1 << 11; /* set contender (hack) */
+        lsid |= (phyreg[6] & 0x10) >> 3; /* initiated reset */
+
+        //for (i = 0; i < (phyreg[2] & 0xf); i++) { /* ports */
+        for (i = 0; i < (phyreg[2] & 0x1f); i++) { /* ports */
+                if (phyreg[3 + i] & 0x4) {
+                        lsid |= (((phyreg[3 + i] & 0x8) | 0x10) >> 3)
+                                << (6 - i*2);
+                } else {
+                        lsid |= 1 << (6 - i*2);
+                }
+        }
+
+        printk("-%d- generated own selfid 0x%x\n", lynx->id, lsid);
+        return lsid;
+}
+
+static void handle_selfid(struct ti_lynx *lynx, struct hpsb_host *host, size_t size)
+{
+        quadlet_t *q = lynx->rcv_page;
+        int phyid, isroot;
+        quadlet_t lsid = 0;
+
+        if (!lynx->phyic.reg_1394a) {
+                lsid = generate_own_selfid(lynx, host);
+        }
+
+        phyid = get_phy_reg(lynx, 0);
+        isroot = (phyid & 2) != 0;
+        phyid >>= 2;
+        PRINT(KERN_INFO, lynx->id, "SelfID process finished (phyid %d, %s)",
+              phyid, (isroot ? "root" : "not root"));
+        reg_write(lynx, LINK_ID, (0xffc0 | phyid) << 16);
+
+        if (!lynx->phyic.reg_1394a && !size) {
+                hpsb_selfid_received(host, lsid);
+        }
+
+        while (size > 0) {
+                if (!lynx->phyic.reg_1394a 
+                    && (q[0] & 0x3f800000) == ((phyid + 1) << 24)) {
+                        hpsb_selfid_received(host, lsid);
+                }
+
+                if (q[0] == ~q[1]) {
+                        printk("-%d- selfid packet 0x%x rcvd\n", lynx->id, q[0]);
+                        hpsb_selfid_received(host, q[0]);
+                } else {
+                        printk("-%d- inconsistent selfid 0x%x/0x%x\n", lynx->id,
+                               q[0], q[1]);
+                }
+                q += 2;
+                size -= 8;
+        }
+
+        if (!lynx->phyic.reg_1394a && isroot && phyid != 0) {
+                hpsb_selfid_received(host, lsid);
+        }
+
+        hpsb_selfid_complete(host, phyid, isroot);
+}
+
+
+
+/* This must be called with the async_queue_lock held. */
+static void send_next_async(struct ti_lynx *lynx)
+{
+        struct ti_pcl pcl;
+        struct hpsb_packet *packet = lynx->async_queue;
+
+        pcl.next = PCL_NEXT_INVALID;
+        pcl.async_error_next = PCL_NEXT_INVALID;
+#ifdef __BIG_ENDIAN
+        pcl.buffer[0].control = PCL_CMD_XMT | packet->speed_code << 14
+                | packet->header_size;
+#else
+        pcl.buffer[0].control = PCL_CMD_XMT | packet->speed_code << 14
+                | packet->header_size | PCL_BIGENDIAN;
+#endif
+        pcl.buffer[0].pointer = virt_to_bus(packet->header);
+        pcl.buffer[1].control = PCL_LAST_BUFF | packet->data_size;
+        pcl.buffer[1].pointer = virt_to_bus(packet->data);
+
+        if (!packet->data_be) {
+                pcl.buffer[1].control |= PCL_BIGENDIAN;
+        }
+
+        put_pcl(lynx, lynx->async_pcl, &pcl);
+        run_pcl(lynx, lynx->async_pcl_start, 3);
+}
+
+
+static int lynx_detect(struct hpsb_host_template *tmpl)
+{
+        struct hpsb_host *host;
+        int i;
+
+        init_driver();
+
+        for (i = 0; i < num_of_cards; i++) {
+                host = hpsb_get_host(tmpl, 0);
+                if (host == NULL) {
+                        /* simply don't init more after out of mem */
+                        return i;
+                }
+                host->hostdata = &cards[i];
+                cards[i].host = host;
+        }
+
+        return num_of_cards;
+}
+
+static int lynx_initialize(struct hpsb_host *host)
+{
+        struct ti_lynx *lynx = host->hostdata;
+        struct ti_pcl pcl;
+        int i;
+        u32 *pcli;
+
+        lynx->async_queue = NULL;
+        spin_lock_init(&lynx->async_queue_lock);
+        spin_lock_init(&lynx->phy_reg_lock);
+        
+        pcl.next = pcl_bus(lynx, lynx->rcv_pcl);
+        put_pcl(lynx, lynx->rcv_pcl_start, &pcl);
+        
+        pcl.next = PCL_NEXT_INVALID;
+        pcl.async_error_next = PCL_NEXT_INVALID;
+#ifdef __BIG_ENDIAN
+        pcl.buffer[0].control = PCL_CMD_RCV | 2048;
+        pcl.buffer[1].control = PCL_LAST_BUFF | 2048;
+#else
+        pcl.buffer[0].control = PCL_CMD_RCV | PCL_BIGENDIAN | 2048;
+        pcl.buffer[1].control = PCL_LAST_BUFF | PCL_BIGENDIAN | 2048;
+#endif
+        pcl.buffer[0].pointer = virt_to_bus(lynx->rcv_page);
+        pcl.buffer[1].pointer = virt_to_bus(lynx->rcv_page) + 2048;
+        put_pcl(lynx, lynx->rcv_pcl, &pcl);
+        
+        pcl.next = pcl_bus(lynx, lynx->async_pcl);
+        pcl.async_error_next = pcl_bus(lynx, lynx->async_pcl);
+        put_pcl(lynx, lynx->async_pcl_start, &pcl);
+
+        pcl.next = PCL_NEXT_INVALID;
+        pcl.async_error_next = PCL_NEXT_INVALID;
+        pcl.buffer[0].control = PCL_CMD_RCV | PCL_LAST_BUFF | 2048;
+#ifndef __BIG_ENDIAN
+        pcl.buffer[0].control |= PCL_BIGENDIAN;
+#endif
+
+        for (i = 0; i < NUM_ISORCV_PCL; i++) {
+                int page = i / ISORCV_PER_PAGE;
+                int sec = i % ISORCV_PER_PAGE;
+
+                pcl.buffer[0].pointer = virt_to_bus(lynx->iso_rcv.page[page])
+                        + sec * MAX_ISORCV_SIZE;
+                put_pcl(lynx, lynx->iso_rcv.pcl[i], &pcl);
+        }
+
+        pcli = (u32 *)&pcl;
+        for (i = 0; i < NUM_ISORCV_PCL; i++) {
+                pcli[i] = pcl_bus(lynx, lynx->iso_rcv.pcl[i]);
+        }
+        put_pcl(lynx, lynx->iso_rcv.pcl_start, &pcl);
+
+        /* 85 bytes for each FIFO - FIXME - optimize or make configurable */
+        reg_write(lynx, FIFO_SIZES, 0x00555555);
+        /* 20 byte threshold before triggering PCI transfer */
+        reg_write(lynx, DMA_GLOBAL_REGISTER, 0x2<<24);
+        /* 69 byte threshold on both send FIFOs before transmitting */
+        reg_write(lynx, FIFO_XMIT_THRESHOLD, 0x4545);
+        
+        reg_set_bits(lynx, PCI_INT_ENABLE, PCI_INT_1394);
+        reg_write(lynx, LINK_INT_ENABLE, LINK_INT_PHY_TIMEOUT
+                  | LINK_INT_PHY_REG_RCVD  | LINK_INT_PHY_BUSRESET
+                  | LINK_INT_ISO_STUCK     | LINK_INT_ASYNC_STUCK 
+                  | LINK_INT_SENT_REJECT   | LINK_INT_TX_INVALID_TC
+                  | LINK_INT_GRF_OVERFLOW  | LINK_INT_ITF_UNDERFLOW
+                  | LINK_INT_ATF_UNDERFLOW);
+        
+        reg_write(lynx, DMA1_WORD0_CMP_VALUE, 0);
+        reg_write(lynx, DMA1_WORD0_CMP_ENABLE, 0xa<<4);
+        reg_write(lynx, DMA1_WORD1_CMP_VALUE, 0);
+        reg_write(lynx, DMA1_WORD1_CMP_ENABLE, DMA_WORD1_CMP_MATCH_NODE_BCAST
+                  | DMA_WORD1_CMP_MATCH_BROADCAST | DMA_WORD1_CMP_MATCH_LOCAL
+                  | DMA_WORD1_CMP_MATCH_BUS_BCAST | DMA_WORD1_CMP_ENABLE_SELF_ID
+                  | DMA_WORD1_CMP_ENABLE_MASTER);
+
+        run_pcl(lynx, lynx->rcv_pcl_start, 1);
+
+        reg_write(lynx, DMA_WORD0_CMP_VALUE(CHANNEL_ISO_RCV), 0);
+        reg_write(lynx, DMA_WORD0_CMP_ENABLE(CHANNEL_ISO_RCV), 0x9<<4);
+        reg_write(lynx, DMA_WORD1_CMP_VALUE(CHANNEL_ISO_RCV), 0);
+        reg_write(lynx, DMA_WORD1_CMP_ENABLE(CHANNEL_ISO_RCV), 0);
+
+        run_sub_pcl(lynx, lynx->iso_rcv.pcl_start, 0, CHANNEL_ISO_RCV);
+
+        reg_write(lynx, LINK_CONTROL, LINK_CONTROL_RCV_CMP_VALID
+                  | LINK_CONTROL_TX_ISO_EN   | LINK_CONTROL_RX_ISO_EN
+                  | LINK_CONTROL_TX_ASYNC_EN | LINK_CONTROL_RX_ASYNC_EN
+                  | LINK_CONTROL_RESET_TX    | LINK_CONTROL_RESET_RX
+                  | LINK_CONTROL_CYCSOURCE   | LINK_CONTROL_CYCTIMEREN);
+        
+        /* attempt to enable contender bit -FIXME- would this work elsewhere? */
+        reg_set_bits(lynx, GPIO_CTRL_A, 0x1);
+        reg_write(lynx, GPIO_DATA_BASE + 0x3c, 0x1); 
+
+        return 1;
+}
+
+static void lynx_release(struct hpsb_host *host)
+{
+        struct ti_lynx *lynx;
+        
+        if (host != NULL) {
+                lynx = host->hostdata;
+                remove_card(lynx);
+        } else {
+                unregister_chrdev(PCILYNX_MAJOR, PCILYNX_DRIVER_NAME);
+        }
+}
+
+
+/*
+ * FIXME - does not support iso/raw transmits yet and will choke on them.
+ */
+static int lynx_transmit(struct hpsb_host *host, struct hpsb_packet *packet)
+{
+        struct ti_lynx *lynx = host->hostdata;
+        struct hpsb_packet *p;
+        unsigned long flags;
+
+        if (packet->data_size >= 4096) {
+                PRINT(KERN_ERR, lynx->id, "transmit packet data too big (%d)",
+                      packet->data_size);
+                return 0;
+        }
+
+        packet->xnext = NULL;
+
+        spin_lock_irqsave(&lynx->async_queue_lock, flags);
+
+        if (lynx->async_queue == NULL) {
+                lynx->async_queue = packet;
+                send_next_async(lynx);
+        } else {
+                p = lynx->async_queue;
+                while (p->xnext != NULL) {
+                        p = p->xnext;
+                }
+
+                p->xnext = packet;
+        }
+
+        spin_unlock_irqrestore(&lynx->async_queue_lock, flags);
+
+        return 1;
+}
+
+static int lynx_devctl(struct hpsb_host *host, enum devctl_cmd cmd, int arg)
+{
+        struct ti_lynx *lynx = host->hostdata;
+        int retval = 0;
+        struct hpsb_packet *packet, *lastpacket;
+        unsigned long flags;
+
+        switch (cmd) {
+        case RESET_BUS:
+                if (arg) {
+                        arg = 3 << 6;
+                } else {
+                        arg = 1 << 6;
+                }
+                
+                PRINT(KERN_INFO, lynx->id, "resetting bus on request%s",
+                      (host->attempt_root ? " and attempting to become root"
+                       : ""));
+
+                spin_lock_irqsave(&lynx->phy_reg_lock, flags);
+                reg_write(lynx, LINK_PHY, LINK_PHY_WRITE | LINK_PHY_ADDR(1) 
+                          | LINK_PHY_WDATA(arg));
+                spin_unlock_irqrestore(&lynx->phy_reg_lock, flags);
+                break;
+
+        case GET_CYCLE_COUNTER:
+                retval = reg_read(lynx, CYCLE_TIMER);
+                break;
+                
+        case SET_CYCLE_COUNTER:
+                reg_write(lynx, CYCLE_TIMER, arg);
+                break;
+
+        case SET_BUS_ID:
+                reg_write(lynx, LINK_ID, 
+                          (arg << 22) | (reg_read(lynx, LINK_ID) & 0x003f0000));
+                break;
+                
+        case ACT_CYCLE_MASTER:
+                if (arg) {
+                        reg_set_bits(lynx, LINK_CONTROL,
+                                     LINK_CONTROL_CYCMASTER);
+                } else {
+                        reg_clear_bits(lynx, LINK_CONTROL,
+                                       LINK_CONTROL_CYCMASTER);
+                }
+                break;
+
+        case CANCEL_REQUESTS:
+                spin_lock_irqsave(&lynx->async_queue_lock, flags);
+
+                reg_write(lynx, DMA3_CHAN_CTRL, 0);
+                packet = lynx->async_queue;
+                lynx->async_queue = NULL;
+
+                spin_unlock_irqrestore(&lynx->async_queue_lock, flags);
+
+                while (packet != NULL) {
+                        lastpacket = packet;
+                        packet = packet->xnext;
+                        hpsb_packet_sent(host, lastpacket, ACKX_ABORTED);
+                }
+
+                break;
+
+        case MODIFY_USAGE:
+                if (arg) {
+                        MOD_INC_USE_COUNT;
+                } else {
+                        MOD_DEC_USE_COUNT;
+                }
+                break;
+
+        case ISO_LISTEN_CHANNEL:
+                spin_lock_irqsave(&lynx->iso_rcv.lock, flags);
+                
+                if (lynx->iso_rcv.chan_count++ == 0) {
+                        reg_write(lynx, DMA_WORD1_CMP_ENABLE(CHANNEL_ISO_RCV),
+                                  DMA_WORD1_CMP_ENABLE_MASTER);
+                }
+
+                spin_unlock_irqrestore(&lynx->iso_rcv.lock, flags);
+                break;
+
+        case ISO_UNLISTEN_CHANNEL:
+                spin_lock_irqsave(&lynx->iso_rcv.lock, flags);
+
+                if (--lynx->iso_rcv.chan_count == 0) {
+                        reg_write(lynx, DMA_WORD1_CMP_ENABLE(CHANNEL_ISO_RCV),
+                                  0);
+                }
+
+                spin_unlock_irqrestore(&lynx->iso_rcv.lock, flags);
+                break;
+
+        default:
+                PRINT(KERN_ERR, lynx->id, "unknown devctl command %d", cmd);
+                retval = -1;
+        }
+
+        return retval;
+}
+
+
+/***************************************
+ * IEEE-1394 functionality section END *
+ ***************************************/
+
+
+/* VFS functions for local bus / aux device access.  Access to those
+ * is implemented as a character device instead of block devices
+ * because buffers are not wanted for this.  Therefore llseek (from
+ * VFS) can be used for these char devices with obvious effects.
+ */
+static int mem_open(struct inode*, struct file*);
+static int mem_release(struct inode*, struct file*);
+static unsigned int aux_poll(struct file*, struct poll_table_struct*);
+static ssize_t mem_read (struct file*, char*, size_t, loff_t*);
+static ssize_t mem_write(struct file*, const char*, size_t, loff_t*);
+
+
+static struct file_operations aux_ops = {
+        /* FIXME: should have custom llseek with bounds checking*/
+        read:     mem_read,
+        write:    mem_write,
+        poll:     aux_poll,
+        open:     mem_open,
+        release:  mem_release
+};
+
+
+static void aux_setup_pcls(struct ti_lynx *lynx)
+{
+        struct ti_pcl pcl;
+        unsigned long membufbus = virt_to_bus(lynx->mem_dma_buffer);
+        int i;
+
+        /* This pcl is used to start any aux transfers, the pointer to next
+           points to itself to avoid a dummy pcl (the PCL engine only executes
+           the next pcl on startup.  The real chain is done by branch */
+        pcl.next = pcl_bus(lynx, lynx->mem_pcl.start);
+        pcl.buffer[0].control = PCL_CMD_BRANCH | PCL_COND_DMARDY_SET;
+        pcl.buffer[0].pointer = pcl_bus(lynx, lynx->mem_pcl.max);
+        pcl.buffer[1].control = PCL_CMD_BRANCH | PCL_COND_DMARDY_CLEAR;
+        pcl.buffer[1].pointer = pcl_bus(lynx, lynx->mem_pcl.cmd);
+        put_pcl(lynx, lynx->mem_pcl.start, &pcl);
+
+        /* let maxpcl transfer exactly 32kB */
+        pcl.next = PCL_NEXT_INVALID;
+        for (i=0; i<8; i++) {
+                pcl.buffer[i].control = 4000;
+                pcl.buffer[i].pointer = membufbus + i * 4000;
+        }
+        pcl.buffer[0].control |= PCL_CMD_LBUS_TO_PCI /*| PCL_GEN_INTR*/;
+        pcl.buffer[8].control = 768 | PCL_LAST_BUFF;
+        pcl.buffer[8].pointer = membufbus + 8 * 4000;
+        put_pcl(lynx, lynx->mem_pcl.max, &pcl);
+
+
+        /* magic stuff - self and modpcl modifying pcl */
+        pcl.next = pcl_bus(lynx, lynx->mem_pcl.mod);
+        pcl.user_data = 4000;
+        pcl.buffer[0].control = PCL_CMD_LOAD;
+        pcl.buffer[0].pointer = pcl_bus(lynx, lynx->mem_pcl.cmd) 
+                                + pcloffs(user_data);
+        pcl.buffer[1].control = PCL_CMD_STOREQ;
+        pcl.buffer[1].pointer = pcl_bus(lynx, lynx->mem_pcl.mod) 
+                                + pcloffs(buffer[1].control);
+        pcl.buffer[2].control = PCL_CMD_LOAD;
+        pcl.buffer[2].pointer = membufbus;
+        pcl.buffer[3].control = PCL_CMD_STOREQ;
+        pcl.buffer[3].pointer = pcl_bus(lynx, lynx->mem_pcl.cmd) 
+                                + pcloffs(buffer[1].pointer);
+        pcl.buffer[4].control = PCL_CMD_STOREQ;
+        pcl.buffer[4].pointer = pcl_bus(lynx, lynx->mem_pcl.cmd) 
+                                + pcloffs(buffer[6].pointer);
+        pcl.buffer[5].control = PCL_CMD_LOAD;
+        pcl.buffer[5].pointer = membufbus + 4;
+        pcl.buffer[6].control = PCL_CMD_STOREQ | PCL_LAST_CMD;
+        put_pcl(lynx, lynx->mem_pcl.cmd, &pcl);
+
+        /* modified by cmdpcl when actual transfer occurs */
+        pcl.next = PCL_NEXT_INVALID;
+        pcl.buffer[0].control = PCL_CMD_LBUS_TO_PCI; /* null transfer */
+        for (i=1; i<13; i++) {
+                pcl.buffer[i].control = 4000;
+                pcl.buffer[i].pointer = membufbus + (i-1) * 4000;
+        }
+        put_pcl(lynx, lynx->mem_pcl.mod, &pcl);
+}
+
+static int mem_open(struct inode *inode, struct file *file)
+{
+        int cid = MINOR(inode->i_rdev);
+        enum { rom, aux, ram } type;
+        struct memdata *md;
+
+        MOD_INC_USE_COUNT;
+        
+        if (cid < PCILYNX_MINOR_AUX_START) {
+                /* just for completeness */
+                MOD_DEC_USE_COUNT;
+                return -ENXIO;
+        } else if (cid < PCILYNX_MINOR_ROM_START) {
+                cid -= PCILYNX_MINOR_AUX_START;
+                if (cid >= num_of_cards || !cards[cid].aux_port) {
+                        MOD_DEC_USE_COUNT;
+                        return -ENXIO;
+                }
+                type = aux;
+        } else if (cid < PCILYNX_MINOR_RAM_START) {
+                cid -= PCILYNX_MINOR_ROM_START;
+                if (cid >= num_of_cards || !cards[cid].local_rom) {
+                        MOD_DEC_USE_COUNT;
+                        return -ENXIO;
+                }
+                type = rom;
+        } else {
+                /* WARNING: Know what you are doing when opening RAM.
+                 * It is currently used inside the driver! */
+                cid -= PCILYNX_MINOR_RAM_START;
+                if (cid >= num_of_cards || !cards[cid].local_ram) {
+                        MOD_DEC_USE_COUNT;
+                        return -ENXIO;
+                }
+                type = ram;
+        }
+
+        md = (struct memdata *)vmalloc(sizeof(struct memdata));
+        if (md == NULL) {
+                MOD_DEC_USE_COUNT;
+                return -ENOMEM;
+        }
+
+        md->lynx = &cards[cid];
+        md->cid = cid;
+
+        switch (type) {
+        case rom:
+                md->type = rom;
+                break;
+        case ram:
+                md->type = ram;
+                break;
+        case aux:
+                md->aux_intr_last_seen = atomic_read(&cards[cid].aux_intr_seen);
+                md->type = aux;
+                break;
+        }
+
+        file->private_data = md;
+
+        return 0;
+}
+
+static int mem_release(struct inode *inode, struct file *file)
+{
+        struct memdata *md = (struct memdata *)file->private_data;
+
+        vfree(md);
+
+        MOD_DEC_USE_COUNT;
+        return 0;
+}
+
+static unsigned int aux_poll(struct file *file, poll_table *pt)
+{
+        struct memdata *md = (struct memdata *)file->private_data;
+        int cid = md->cid;
+        unsigned int mask;
+        int intr_seen;
+
+        /* reading and writing is always allowed */
+        mask = POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM;
+
+        if (md->type == aux) {
+                poll_wait(file, &cards[cid].aux_intr_wait, pt);
+                intr_seen = atomic_read(&cards[cid].aux_intr_seen);
+
+                if (md->aux_intr_last_seen != intr_seen) {
+                        mask |= POLLPRI;
+                        /* md->aux_intr_last_seen = intr_seen; */
+                        md->aux_intr_last_seen++; /* don't miss interrupts */
+                        /* FIXME - make ioctl for configuring this */
+                }
+        }
+
+        return mask;
+}
+
+
+/* 
+ * do not DMA if count is too small because this will have a serious impact 
+ * on performance - the value 2400 was found by experiment and may not work
+ * everywhere as good as here - use mem_mindma option for modules to change 
+ */
+short mem_mindma = 2400;
+MODULE_PARM(mem_mindma, "h");
+
+static ssize_t mem_read(struct file *file, char *buffer, size_t count,
+                        loff_t *offset)
+{
+        struct memdata *md = (struct memdata *)file->private_data;
+        size_t bcount;
+        size_t alignfix;
+        int off = (int)*offset; /* avoid useless 64bit-arithmetic */
+        void *membase;
+
+        DECLARE_WAITQUEUE(wait, current);
+
+        if ((off + count) > PCILYNX_MAX_MEMORY+1) {
+                count = PCILYNX_MAX_MEMORY+1 - off;
+        }
+        if (count <= 0) {
+                return 0;
+        }
+
+
+        down(&md->lynx->mem_dma_mutex);
+
+        switch (md->type) {
+        case rom:
+                reg_write(md->lynx, LBUS_ADDR, LBUS_ADDR_SEL_ROM | off);
+                membase = md->lynx->local_rom;
+                break;
+        case ram:
+                reg_write(md->lynx, LBUS_ADDR, LBUS_ADDR_SEL_RAM | off);
+                membase = md->lynx->local_ram;
+                break;
+        case aux:
+                reg_write(md->lynx, LBUS_ADDR, LBUS_ADDR_SEL_AUX | off);
+                membase = md->lynx->aux_port;
+                break;
+        default:
+                panic("pcilynx%d: unsupported md->type %d in " __FUNCTION__,
+                      md->lynx->id, md->type);
+        }
+
+        if (count < mem_mindma) {
+                memcpy_fromio(md->lynx->mem_dma_buffer, membase+off, count);
+                copy_to_user(buffer, md->lynx->mem_dma_buffer, count);
+                bcount = 0;
+                goto done;
+        }
+        
+        bcount = count;
+        alignfix = 4 - (off % 4);
+        if (alignfix != 4) {
+                if (bcount < alignfix) {
+                        alignfix = bcount;
+                }
+                memcpy_fromio(md->lynx->mem_dma_buffer, membase+off, alignfix);
+                copy_to_user(buffer, md->lynx->mem_dma_buffer, alignfix);
+                if (bcount == alignfix) {
+                        goto done;
+                }
+                bcount -= alignfix;
+                buffer += alignfix;
+                off += alignfix;
+        }
+
+        if (reg_read(md->lynx, DMA0_CHAN_CTRL) & DMA_CHAN_CTRL_BUSY) {
+                PRINT(KERN_WARNING, md->lynx->id, "DMA ALREADY ACTIVE!");
+        }
+
+        add_wait_queue(&md->lynx->mem_dma_intr_wait, &wait);
+
+        if (bcount > 32768) {
+                current->state = TASK_INTERRUPTIBLE;
+
+                reg_write(md->lynx, DMA0_READY, 1); /* select maxpcl */
+                run_pcl(md->lynx, md->lynx->mem_pcl.start, 0);
+
+                while (reg_read(md->lynx, DMA0_CHAN_CTRL)
+                       & DMA_CHAN_CTRL_BUSY) {
+                        if (signal_pending(current)) {
+                                reg_write(md->lynx, DMA0_CHAN_CTRL, 0);
+                                goto rmwait_done;
+                        }
+                        schedule();
+                }
+
+                copy_to_user(buffer, md->lynx->mem_dma_buffer, 32768);
+                buffer += 32768;
+                bcount -= 32768;
+        }
+
+        *(u32 *)(md->lynx->mem_dma_buffer) = 
+                pcl_bus(md->lynx, md->lynx->mem_pcl.mod) 
+                + pcloffs(buffer[bcount/4000+1].control);
+        *(u32 *)(md->lynx->mem_dma_buffer+4) = PCL_LAST_BUFF | (bcount % 4000);
+
+        current->state = TASK_INTERRUPTIBLE;
+
+        reg_write(md->lynx, DMA0_READY, 0);
+        run_pcl(md->lynx, md->lynx->mem_pcl.start, 0);
+
+        while (reg_read(md->lynx, DMA0_CHAN_CTRL) & DMA_CHAN_CTRL_BUSY) {
+                if (signal_pending(current)) {
+                        reg_write(md->lynx, DMA0_CHAN_CTRL, 0);
+                        goto rmwait_done;
+                }
+                schedule();
+        }
+
+        copy_to_user(buffer, md->lynx->mem_dma_buffer, bcount);
+        bcount = 0;
+
+        if (reg_read(md->lynx, DMA0_CHAN_CTRL) & DMA_CHAN_CTRL_BUSY) {
+                PRINT(KERN_ERR, md->lynx->id, "DMA STILL ACTIVE!");
+        }
+
+ rmwait_done:
+        reg_write(md->lynx, DMA0_CHAN_CTRL, 0);
+        remove_wait_queue(&md->lynx->mem_dma_intr_wait, &wait);
+ done:
+        up(&md->lynx->mem_dma_mutex);
+
+        count -= bcount;
+        *offset += count;
+        return (count ? count : -EINTR);
+}
+
+
+static ssize_t mem_write(struct file *file, const char *buffer, size_t count, 
+                         loff_t *offset)
+{
+        struct memdata *md = (struct memdata *)file->private_data;
+
+        if (((*offset) + count) > PCILYNX_MAX_MEMORY+1) {
+                count = PCILYNX_MAX_MEMORY+1 - *offset;
+        }
+        if (count == 0 || *offset > PCILYNX_MAX_MEMORY) {
+                return -ENOSPC;
+        }
+
+        /* FIXME: dereferencing pointers to PCI mem doesn't work everywhere */
+        switch (md->type) {
+        case aux:
+                copy_from_user(md->lynx->aux_port+(*offset), buffer, count);
+                break;
+        case ram:
+                copy_from_user(md->lynx->local_ram+(*offset), buffer, count);
+                break;
+        case rom:
+                /* the ROM may be writeable */
+                copy_from_user(md->lynx->local_rom+(*offset), buffer, count);
+                break;
+        }
+
+        file->f_pos += count;
+        return count;
+}
+
+
+
+/********************************************************
+ * Global stuff (interrupt handler, init/shutdown code) *
+ ********************************************************/
+
+
+static void lynx_irq_handler(int irq, void *dev_id,
+                             struct pt_regs *regs_are_unused)
+{
+        struct ti_lynx *lynx = (struct ti_lynx *)dev_id;
+        struct hpsb_host *host = lynx->host;
+        u32 intmask = reg_read(lynx, PCI_INT_STATUS);
+        u32 linkint = reg_read(lynx, LINK_INT_STATUS);
+
+        reg_write(lynx, PCI_INT_STATUS, intmask);
+        reg_write(lynx, LINK_INT_STATUS, linkint);
+        //printk("-%d- one interrupt: 0x%08x / 0x%08x\n", lynx->id, intmask, linkint);
+
+        if (intmask & PCI_INT_AUX_INT) {
+                atomic_inc(&lynx->aux_intr_seen);
+                wake_up_interruptible(&lynx->aux_intr_wait);
+        }
+
+        if (intmask & PCI_INT_DMA0_HLT) {
+                wake_up_interruptible(&lynx->mem_dma_intr_wait);
+        }
+
+
+        if (intmask & PCI_INT_1394) {
+                if (linkint & LINK_INT_PHY_TIMEOUT) {
+                        PRINT(KERN_INFO, lynx->id, "PHY timeout occured");
+                }
+                if (linkint & LINK_INT_PHY_BUSRESET) {
+                        PRINT(KERN_INFO, lynx->id, "bus reset interrupt");
+                        if (!host->in_bus_reset) {
+                                hpsb_bus_reset(host);
+                        }
+                }
+                if (linkint & LINK_INT_PHY_REG_RCVD) {
+                        if (!host->in_bus_reset) {
+                                printk("-%d- phy reg received without reset\n",
+                                       lynx->id);
+                        }
+                }
+                if (linkint & LINK_INT_ISO_STUCK) {
+                        PRINT(KERN_INFO, lynx->id, "isochronous transmitter stuck");
+                }
+                if (linkint & LINK_INT_ASYNC_STUCK) {
+                        PRINT(KERN_INFO, lynx->id, "asynchronous transmitter stuck");
+                }
+                if (linkint & LINK_INT_SENT_REJECT) {
+                        PRINT(KERN_INFO, lynx->id, "sent reject");
+                }
+                if (linkint & LINK_INT_TX_INVALID_TC) {
+                        PRINT(KERN_INFO, lynx->id, "invalid transaction code");
+                }
+                if (linkint & LINK_INT_GRF_OVERFLOW) {
+                        PRINT(KERN_INFO, lynx->id, "GRF overflow");
+                }
+                if (linkint & LINK_INT_ITF_UNDERFLOW) {
+                        PRINT(KERN_INFO, lynx->id, "ITF underflow");
+                }
+                if (linkint & LINK_INT_ATF_UNDERFLOW) {
+                        PRINT(KERN_INFO, lynx->id, "ATF underflow");
+                }
+        }
+
+        if (intmask & PCI_INT_DMA_HLT(CHANNEL_ISO_RCV)) {
+                PRINT(KERN_INFO, lynx->id, "iso receive");
+
+                spin_lock(&lynx->iso_rcv.lock);
+
+                lynx->iso_rcv.stat[lynx->iso_rcv.next] =
+                        reg_read(lynx, DMA_CHAN_STAT(CHANNEL_ISO_RCV));
+
+                lynx->iso_rcv.used++;
+                lynx->iso_rcv.next = (lynx->iso_rcv.next + 1) % NUM_ISORCV_PCL;
+
+                if ((lynx->iso_rcv.next == lynx->iso_rcv.last)
+                    || !lynx->iso_rcv.chan_count) {
+                        printk("stopped\n");
+                        reg_write(lynx, DMA_WORD1_CMP_ENABLE(CHANNEL_ISO_RCV), 0);
+                }
+
+                run_sub_pcl(lynx, lynx->iso_rcv.pcl_start, lynx->iso_rcv.next,
+                            CHANNEL_ISO_RCV);
+
+                spin_unlock(&lynx->iso_rcv.lock);
+
+                queue_task(&lynx->iso_rcv.tq, &tq_immediate);
+                mark_bh(IMMEDIATE_BH);
+        }
+
+        if (intmask & PCI_INT_DMA3_HLT) {
+                /* async send DMA completed */
+                u32 ack;
+                struct hpsb_packet *packet;
+                
+                spin_lock(&lynx->async_queue_lock);
+
+                ack = reg_read(lynx, DMA3_CHAN_STAT);
+                packet = lynx->async_queue;
+                lynx->async_queue = packet->xnext;
+
+                if (lynx->async_queue != NULL) {
+                        send_next_async(lynx);
+                }
+
+                spin_unlock(&lynx->async_queue_lock);
+
+                if (ack & DMA_CHAN_STAT_SPECIALACK) {
+                        printk("-%d- special ack %d\n", lynx->id,
+                               (ack >> 15) & 0xf);
+                        ack = ACKX_SEND_ERROR;
+                } else {
+                        ack = (ack >> 15) & 0xf;
+                }
+                
+                hpsb_packet_sent(host, packet, ack);
+        }
+
+        if (intmask & (PCI_INT_DMA1_HLT | PCI_INT_DMA1_PCL)) {
+                /* general receive DMA completed */
+                int stat = reg_read(lynx, DMA1_CHAN_STAT);
+
+                printk("-%d- received packet size %d\n", lynx->id, 
+                       stat & 0x1fff); 
+
+                if (stat & DMA_CHAN_STAT_SELFID) {
+                        handle_selfid(lynx, host, stat & 0x1fff);
+                        reg_set_bits(lynx, LINK_CONTROL,
+                                     LINK_CONTROL_RCV_CMP_VALID
+                                     | LINK_CONTROL_TX_ASYNC_EN
+                                     | LINK_CONTROL_RX_ASYNC_EN);
+                } else {
+                        hpsb_packet_received(host, lynx->rcv_page,
+                                             stat & 0x1fff);
+                }
+
+                run_pcl(lynx, lynx->rcv_pcl_start, 1);
+        }
+}
+
+static void iso_rcv_bh(struct ti_lynx *lynx)
+{
+        unsigned int idx;
+        quadlet_t *data;
+        unsigned long flags;
+
+        spin_lock_irqsave(&lynx->iso_rcv.lock, flags);
+
+        while (lynx->iso_rcv.used) {
+                idx = lynx->iso_rcv.last;
+                spin_unlock_irqrestore(&lynx->iso_rcv.lock, flags);
+
+                data = lynx->iso_rcv.page[idx / ISORCV_PER_PAGE]
+                        + (idx % ISORCV_PER_PAGE) * MAX_ISORCV_SIZE;
+
+                if (lynx->iso_rcv.stat[idx] 
+                    & (DMA_CHAN_STAT_PCIERR | DMA_CHAN_STAT_PKTERR)) {
+                        PRINT(KERN_INFO, lynx->id,
+                              "iso receive error on %d to 0x%p", idx, data);
+                } else {
+                        hpsb_packet_received(lynx->host, data,
+                                             lynx->iso_rcv.stat[idx] & 0x1fff);
+                }
+
+                spin_lock_irqsave(&lynx->iso_rcv.lock, flags);
+                lynx->iso_rcv.last = (idx + 1) % NUM_ISORCV_PCL;
+                lynx->iso_rcv.used--;
+        }
+
+        if (lynx->iso_rcv.chan_count) {
+                reg_write(lynx, DMA_WORD1_CMP_ENABLE(CHANNEL_ISO_RCV),
+                          DMA_WORD1_CMP_ENABLE_MASTER);
+        }
+        spin_unlock_irqrestore(&lynx->iso_rcv.lock, flags);
+}
+
+
+static int add_card(struct pci_dev *dev)
+{
+#define FAIL(fmt, args...) \
+        PRINT_G(KERN_ERR, fmt , ## args); \
+        num_of_cards--; \
+        remove_card(lynx); \
+        return 1
+
+        struct ti_lynx *lynx; /* shortcut to currently handled device */
+        unsigned long page;
+        unsigned int i;
+
+        if (num_of_cards == MAX_PCILYNX_CARDS) {
+                PRINT_G(KERN_WARNING, "cannot handle more than %d cards.  "
+                        "Adjust MAX_PCILYNX_CARDS in ti_pcilynx.h.",
+                        MAX_PCILYNX_CARDS);
+                return 1;
+        }
+
+        lynx = &cards[num_of_cards++];
+
+        lynx->id = num_of_cards-1;
+        lynx->dev = dev;
+
+        pci_set_master(dev);
+
+        if (!request_irq(dev->irq, lynx_irq_handler, SA_SHIRQ,
+                         PCILYNX_DRIVER_NAME, lynx)) {
+                PRINT(KERN_INFO, lynx->id, "allocated interrupt %d", dev->irq);
+                lynx->state = have_intr;
+        } else {
+                FAIL("failed to allocate shared interrupt %d", dev->irq);
+        }
+
+#ifndef CONFIG_IEEE1394_PCILYNX_LOCALRAM
+	lynx->pcl_mem = kmalloc(8 * sizeof(lynx->pcl_bmap) 
+                                * sizeof(struct ti_pcl), GFP_KERNEL);
+
+        if (lynx->pcl_mem != NULL) {
+                lynx->state = have_pcl_mem;
+                PRINT(KERN_INFO, lynx->id, 
+                      "allocated PCL memory %d Bytes @ 0x%p",
+                      8 * sizeof(lynx->pcl_bmap) * sizeof(struct ti_pcl),
+                      lynx->pcl_mem);
+        } else {
+                FAIL("failed to allocate PCL memory area");
+        }
+#endif
+
+        lynx->mem_dma_buffer = kmalloc(32768, GFP_KERNEL);
+        if (lynx->mem_dma_buffer != NULL) {
+                lynx->state = have_aux_buf;
+        } else {
+                FAIL("failed to allocate DMA buffer for aux");
+        }
+
+        page = get_free_page(GFP_KERNEL);
+        if (page != 0) {
+                lynx->rcv_page = (void *)page;
+                lynx->state = have_1394_buffers;
+        } else {
+                FAIL("failed to allocate receive buffer");
+        }
+
+        for (i = 0; i < ISORCV_PAGES; i++) {
+                page = get_free_page(GFP_KERNEL);
+                if (page != 0) {
+                        lynx->iso_rcv.page[i] = (void *)page;
+                } else {
+                        FAIL("failed to allocate iso receive buffers");
+                }
+        }
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,13)
+        lynx->registers = ioremap_nocache(dev->base_address[0],
+                                          PCILYNX_MAX_REGISTER);
+        lynx->local_ram = ioremap(dev->base_address[1], PCILYNX_MAX_MEMORY);
+        lynx->aux_port = ioremap(dev->base_address[2], PCILYNX_MAX_MEMORY);
+#else
+        lynx->registers = ioremap_nocache(dev->resource[0].start,
+                                          PCILYNX_MAX_REGISTER);
+        lynx->local_ram = ioremap(dev->resource[1].start, PCILYNX_MAX_MEMORY);
+        lynx->aux_port = ioremap(dev->resource[2].start, PCILYNX_MAX_MEMORY);
+#endif
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,15)
+        lynx->local_rom = ioremap(dev->rom_address, PCILYNX_MAX_MEMORY);
+#else
+        lynx->local_rom = ioremap(dev->resource[PCI_ROM_RESOURCE].start,
+                                  PCILYNX_MAX_MEMORY);
+#endif
+        lynx->state = have_iomappings;
+
+        if (lynx->registers == NULL) {
+                FAIL("failed to remap registers - card not accessible");
+        }
+
+#ifdef CONFIG_IEEE1394_PCILYNX_LOCALRAM
+        if (lynx->local_ram == NULL) {
+                FAIL("failed to remap local RAM which is required for "
+                     "operation");
+        }
+#endif
+
+        /* alloc_pcl return values are not checked, it is expected that the
+         * provided PCL space is sufficient for the initial allocations */
+        if (lynx->aux_port != NULL) {
+                lynx->mem_pcl.start = alloc_pcl(lynx);
+                lynx->mem_pcl.cmd = alloc_pcl(lynx);
+                lynx->mem_pcl.mod = alloc_pcl(lynx);
+                lynx->mem_pcl.max = alloc_pcl(lynx);
+                aux_setup_pcls(lynx);
+        
+                sema_init(&lynx->mem_dma_mutex, 1);
+        }
+        lynx->rcv_pcl = alloc_pcl(lynx);
+        lynx->rcv_pcl_start = alloc_pcl(lynx);
+        lynx->async_pcl = alloc_pcl(lynx);
+        lynx->async_pcl_start = alloc_pcl(lynx);
+
+        for (i = 0; i < NUM_ISORCV_PCL; i++) {
+                lynx->iso_rcv.pcl[i] = alloc_pcl(lynx);
+        }
+        lynx->iso_rcv.pcl_start = alloc_pcl(lynx);
+
+        /* all allocations successful - simple init stuff follows */
+
+        lynx->lock = SPIN_LOCK_UNLOCKED;
+
+        reg_write(lynx, PCI_INT_ENABLE, PCI_INT_AUX_INT | PCI_INT_DMA_ALL);
+
+        init_waitqueue_head(&lynx->mem_dma_intr_wait);
+        init_waitqueue_head(&lynx->aux_intr_wait);
+
+        lynx->iso_rcv.tq.routine = (void (*)(void*))iso_rcv_bh;
+        lynx->iso_rcv.tq.data = lynx;
+        lynx->iso_rcv.lock = SPIN_LOCK_UNLOCKED;
+        
+        PRINT(KERN_INFO, lynx->id, "remapped memory spaces reg 0x%p, rom 0x%p, "
+              "ram 0x%p, aux 0x%p", lynx->registers, lynx->local_rom,
+              lynx->local_ram, lynx->aux_port);
+
+        /* now, looking for PHY register set */
+        if ((get_phy_reg(lynx, 2) & 0xe0) == 0xe0) {
+                lynx->phyic.reg_1394a = 1;
+                PRINT(KERN_INFO, lynx->id,
+                      "found 1394a conform PHY (using extended register set)");
+                lynx->phyic.vendor = get_phy_vendorid(lynx);
+                lynx->phyic.product = get_phy_productid(lynx);
+        } else {
+                lynx->phyic.reg_1394a = 0;
+                PRINT(KERN_INFO, lynx->id, "found old 1394 PHY");
+        }
+
+        return 0;
+#undef FAIL
+}
+
+static void remove_card(struct ti_lynx *lynx)
+{
+        int i;
+
+        switch (lynx->state) {
+        case have_iomappings:
+                reg_write(lynx, PCI_INT_ENABLE, 0);
+                reg_write(lynx, MISC_CONTROL, MISC_CONTROL_SWRESET);
+                iounmap(lynx->registers);
+                iounmap(lynx->local_rom);
+                iounmap(lynx->local_ram);
+                iounmap(lynx->aux_port);
+        case have_1394_buffers:
+                for (i = 0; i < ISORCV_PAGES; i++) {
+                        if (lynx->iso_rcv.page[i]) {
+                                free_page((unsigned long)lynx->iso_rcv.page[i]);
+                        }
+                }
+                free_page((unsigned long)lynx->rcv_page);
+        case have_aux_buf:
+                kfree(lynx->mem_dma_buffer);
+	case have_pcl_mem:
+#ifndef CONFIG_IEEE1394_PCILYNX_LOCALRAM
+		kfree(lynx->pcl_mem);
+#endif
+        case have_intr:
+                free_irq(lynx->dev->irq, lynx);
+        case clear:
+                /* do nothing - already freed */
+        }
+
+        lynx->state = clear;
+}
+
+static int init_driver()
+{
+        struct pci_dev *dev = NULL;
+        int success = 0;
+
+        if (num_of_cards) {
+                PRINT_G(KERN_DEBUG, __PRETTY_FUNCTION__ " called again");
+                return 0;
+        }
+
+        PRINT_G(KERN_INFO, "looking for PCILynx cards");
+
+        while ((dev = pci_find_device(PCI_VENDOR_ID_TI,
+                                      PCI_DEVICE_ID_TI_PCILYNX, dev)) 
+               != NULL) {
+                if (add_card(dev) == 0) {
+                        success = 1;
+                }
+        }
+
+        if (success == 0) {
+                PRINT_G(KERN_WARNING, "no operable PCILynx cards found");
+                return -ENXIO;
+        }
+
+        if (register_chrdev(PCILYNX_MAJOR, PCILYNX_DRIVER_NAME, &aux_ops)) {
+                PRINT_G(KERN_ERR, "allocation of char major number %d failed\n",
+                        PCILYNX_MAJOR);
+                return -EBUSY;
+        }
+
+        return 0;
+}
+
+
+static size_t get_lynx_rom(struct hpsb_host *host, const quadlet_t **ptr)
+{
+        *ptr = lynx_csr_rom;
+        return sizeof(lynx_csr_rom);
+}
+
+struct hpsb_host_template *get_lynx_template(void)
+{
+        static struct hpsb_host_template tmpl = {
+                name:             "pcilynx",
+                detect_hosts:     lynx_detect,
+                initialize_host:  lynx_initialize,
+                release_host:     lynx_release,
+                get_rom:          get_lynx_rom,
+                transmit_packet:  lynx_transmit,
+                devctl:           lynx_devctl
+        };
+
+        return &tmpl;
+}
+
+
+#ifdef MODULE
+
+/* EXPORT_NO_SYMBOLS; */
+
+MODULE_AUTHOR("Andreas E. Bombe <andreas.bombe@munich.netsurf.de>");
+MODULE_DESCRIPTION("driver for Texas Instruments PCI Lynx IEEE-1394 controller");
+MODULE_SUPPORTED_DEVICE("pcilynx");
+
+void cleanup_module(void)
+{
+        hpsb_unregister_lowlevel(get_lynx_template());
+        PRINT_G(KERN_INFO, "removed " PCILYNX_DRIVER_NAME " module\n");
+}
+
+int init_module(void)
+{
+        if (hpsb_register_lowlevel(get_lynx_template())) {
+                PRINT_G(KERN_ERR, "registering failed\n");
+                return -ENXIO;
+        } else {
+                return 0;
+        }
+}
+
+#endif /* MODULE */