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path: root/drivers/firewire
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-rw-r--r--drivers/firewire/Kconfig24
-rw-r--r--drivers/firewire/Makefile1
-rw-r--r--drivers/firewire/core-card.c24
-rw-r--r--drivers/firewire/core-cdev.c1
-rw-r--r--drivers/firewire/core-device.c6
-rw-r--r--drivers/firewire/core-iso.c15
-rw-r--r--drivers/firewire/net.c1
-rw-r--r--drivers/firewire/nosy-user.h25
-rw-r--r--drivers/firewire/nosy.c721
-rw-r--r--drivers/firewire/nosy.h237
-rw-r--r--drivers/firewire/ohci.c28
-rw-r--r--drivers/firewire/sbp2.c2
12 files changed, 1061 insertions, 24 deletions
diff --git a/drivers/firewire/Kconfig b/drivers/firewire/Kconfig
index a9371b36a9b9..fcf3ea28340b 100644
--- a/drivers/firewire/Kconfig
+++ b/drivers/firewire/Kconfig
@@ -66,4 +66,28 @@ config FIREWIRE_NET
source "drivers/ieee1394/Kconfig"
+config FIREWIRE_NOSY
+ tristate "Nosy - a FireWire traffic sniffer for PCILynx cards"
+ depends on PCI
+ help
+ Nosy is an IEEE 1394 packet sniffer that is used for protocol
+ analysis and in development of IEEE 1394 drivers, applications,
+ or firmwares.
+
+ This driver lets you use a Texas Instruments PCILynx 1394 to PCI
+ link layer controller TSB12LV21/A/B as a low-budget bus analyzer.
+ PCILynx is a nowadays very rare IEEE 1394 controller which is
+ not OHCI 1394 compliant.
+
+ The following cards are known to be based on PCILynx or PCILynx-2:
+ IOI IOI-1394TT (PCI card), Unibrain Fireboard 400 PCI Lynx-2
+ (PCI card), Newer Technology FireWire 2 Go (CardBus card),
+ Apple Power Mac G3 blue & white (onboard controller).
+
+ To compile this driver as a module, say M here: The module will be
+ called nosy. Source code of a userspace interface to nosy, called
+ nosy-dump, can be found in tools/firewire/ of the kernel sources.
+
+ If unsure, say N.
+
endmenu
diff --git a/drivers/firewire/Makefile b/drivers/firewire/Makefile
index a8f9bb6d9fdf..3c6a7fb20aa7 100644
--- a/drivers/firewire/Makefile
+++ b/drivers/firewire/Makefile
@@ -12,3 +12,4 @@ obj-$(CONFIG_FIREWIRE) += firewire-core.o
obj-$(CONFIG_FIREWIRE_OHCI) += firewire-ohci.o
obj-$(CONFIG_FIREWIRE_SBP2) += firewire-sbp2.o
obj-$(CONFIG_FIREWIRE_NET) += firewire-net.o
+obj-$(CONFIG_FIREWIRE_NOSY) += nosy.o
diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c
index 417b8a4b1af1..be0492398ef9 100644
--- a/drivers/firewire/core-card.c
+++ b/drivers/firewire/core-card.c
@@ -276,13 +276,14 @@ void fw_schedule_bm_work(struct fw_card *card, unsigned long delay)
static void bm_work(struct work_struct *work)
{
struct fw_card *card = container_of(work, struct fw_card, bm_work.work);
- struct fw_device *root_device;
+ struct fw_device *root_device, *irm_device;
struct fw_node *root_node;
int root_id, new_root_id, irm_id, bm_id, local_id;
int gap_count, generation, grace, rcode;
bool do_reset = false;
bool root_device_is_running;
bool root_device_is_cmc;
+ bool irm_is_1394_1995_only;
spin_lock_irq(&card->lock);
@@ -292,12 +293,18 @@ static void bm_work(struct work_struct *work)
}
generation = card->generation;
+
root_node = card->root_node;
fw_node_get(root_node);
root_device = root_node->data;
root_device_is_running = root_device &&
atomic_read(&root_device->state) == FW_DEVICE_RUNNING;
root_device_is_cmc = root_device && root_device->cmc;
+
+ irm_device = card->irm_node->data;
+ irm_is_1394_1995_only = irm_device && irm_device->config_rom &&
+ (irm_device->config_rom[2] & 0x000000f0) == 0;
+
root_id = root_node->node_id;
irm_id = card->irm_node->node_id;
local_id = card->local_node->node_id;
@@ -321,8 +328,15 @@ static void bm_work(struct work_struct *work)
if (!card->irm_node->link_on) {
new_root_id = local_id;
- fw_notify("IRM has link off, making local node (%02x) root.\n",
- new_root_id);
+ fw_notify("%s, making local node (%02x) root.\n",
+ "IRM has link off", new_root_id);
+ goto pick_me;
+ }
+
+ if (irm_is_1394_1995_only) {
+ new_root_id = local_id;
+ fw_notify("%s, making local node (%02x) root.\n",
+ "IRM is not 1394a compliant", new_root_id);
goto pick_me;
}
@@ -376,8 +390,8 @@ static void bm_work(struct work_struct *work)
* root, and thus, IRM.
*/
new_root_id = local_id;
- fw_notify("BM lock failed, making local node (%02x) root.\n",
- new_root_id);
+ fw_notify("%s, making local node (%02x) root.\n",
+ "BM lock failed", new_root_id);
goto pick_me;
}
} else if (card->bm_generation != generation) {
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index ba23646bb108..14bb7b7b5dd7 100644
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -35,6 +35,7 @@
#include <linux/mutex.h>
#include <linux/poll.h>
#include <linux/sched.h> /* required for linux/wait.h */
+#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/time.h>
diff --git a/drivers/firewire/core-device.c b/drivers/firewire/core-device.c
index e9c18f582c82..6113b896e790 100644
--- a/drivers/firewire/core-device.c
+++ b/drivers/firewire/core-device.c
@@ -33,7 +33,7 @@
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/rwsem.h>
-#include <linux/semaphore.h>
+#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/string.h>
#include <linux/workqueue.h>
@@ -805,9 +805,9 @@ static int update_unit(struct device *dev, void *data)
struct fw_driver *driver = (struct fw_driver *)dev->driver;
if (is_fw_unit(dev) && driver != NULL && driver->update != NULL) {
- down(&dev->sem);
+ device_lock(dev);
driver->update(unit);
- up(&dev->sem);
+ device_unlock(dev);
}
return 0;
diff --git a/drivers/firewire/core-iso.c b/drivers/firewire/core-iso.c
index 0c8e662a5daf..c003fa4e2db1 100644
--- a/drivers/firewire/core-iso.c
+++ b/drivers/firewire/core-iso.c
@@ -26,6 +26,7 @@
#include <linux/firewire-constants.h>
#include <linux/kernel.h>
#include <linux/mm.h>
+#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/vmalloc.h>
@@ -207,7 +208,7 @@ static int manage_bandwidth(struct fw_card *card, int irm_id, int generation,
for (try = 0; try < 5; try++) {
new = allocate ? old - bandwidth : old + bandwidth;
if (new < 0 || new > BANDWIDTH_AVAILABLE_INITIAL)
- break;
+ return -EBUSY;
data[0] = cpu_to_be32(old);
data[1] = cpu_to_be32(new);
@@ -235,7 +236,7 @@ static int manage_channel(struct fw_card *card, int irm_id, int generation,
u32 channels_mask, u64 offset, bool allocate, __be32 data[2])
{
__be32 c, all, old;
- int i, retry = 5;
+ int i, ret = -EIO, retry = 5;
old = all = allocate ? cpu_to_be32(~0) : 0;
@@ -243,6 +244,8 @@ static int manage_channel(struct fw_card *card, int irm_id, int generation,
if (!(channels_mask & 1 << i))
continue;
+ ret = -EBUSY;
+
c = cpu_to_be32(1 << (31 - i));
if ((old & c) != (all & c))
continue;
@@ -268,12 +271,16 @@ static int manage_channel(struct fw_card *card, int irm_id, int generation,
/* 1394-1995 IRM, fall through to retry. */
default:
- if (retry--)
+ if (retry) {
+ retry--;
i--;
+ } else {
+ ret = -EIO;
+ }
}
}
- return -EIO;
+ return ret;
}
static void deallocate_channel(struct fw_card *card, int irm_id,
diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c
index 4bb3fb882f63..da17d409a244 100644
--- a/drivers/firewire/net.c
+++ b/drivers/firewire/net.c
@@ -21,6 +21,7 @@
#include <linux/mutex.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
+#include <linux/slab.h>
#include <linux/spinlock.h>
#include <asm/unaligned.h>
diff --git a/drivers/firewire/nosy-user.h b/drivers/firewire/nosy-user.h
new file mode 100644
index 000000000000..e48aa6200c72
--- /dev/null
+++ b/drivers/firewire/nosy-user.h
@@ -0,0 +1,25 @@
+#ifndef __nosy_user_h
+#define __nosy_user_h
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+#define NOSY_IOC_GET_STATS _IOR('&', 0, struct nosy_stats)
+#define NOSY_IOC_START _IO('&', 1)
+#define NOSY_IOC_STOP _IO('&', 2)
+#define NOSY_IOC_FILTER _IOW('&', 2, __u32)
+
+struct nosy_stats {
+ __u32 total_packet_count;
+ __u32 lost_packet_count;
+};
+
+/*
+ * Format of packets returned from the kernel driver:
+ *
+ * quadlet with timestamp (microseconds, CPU endian)
+ * quadlet-padded packet data... (little endian)
+ * quadlet with ack (little endian)
+ */
+
+#endif /* __nosy_user_h */
diff --git a/drivers/firewire/nosy.c b/drivers/firewire/nosy.c
new file mode 100644
index 000000000000..8528b10763ed
--- /dev/null
+++ b/drivers/firewire/nosy.c
@@ -0,0 +1,721 @@
+/*
+ * nosy - Snoop mode driver for TI PCILynx 1394 controllers
+ * Copyright (C) 2002-2007 Kristian Høgsberg
+ *
+ * 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.
+ */
+
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/kref.h>
+#include <linux/miscdevice.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/pci.h>
+#include <linux/poll.h>
+#include <linux/sched.h> /* required for linux/wait.h */
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/timex.h>
+#include <linux/uaccess.h>
+#include <linux/wait.h>
+
+#include <asm/atomic.h>
+#include <asm/byteorder.h>
+
+#include "nosy.h"
+#include "nosy-user.h"
+
+#define TCODE_PHY_PACKET 0x10
+#define PCI_DEVICE_ID_TI_PCILYNX 0x8000
+
+static char driver_name[] = KBUILD_MODNAME;
+
+/* this is the physical layout of a PCL, its size is 128 bytes */
+struct pcl {
+ __le32 next;
+ __le32 async_error_next;
+ u32 user_data;
+ __le32 pcl_status;
+ __le32 remaining_transfer_count;
+ __le32 next_data_buffer;
+ struct {
+ __le32 control;
+ __le32 pointer;
+ } buffer[13];
+};
+
+struct packet {
+ unsigned int length;
+ char data[0];
+};
+
+struct packet_buffer {
+ char *data;
+ size_t capacity;
+ long total_packet_count, lost_packet_count;
+ atomic_t size;
+ struct packet *head, *tail;
+ wait_queue_head_t wait;
+};
+
+struct pcilynx {
+ struct pci_dev *pci_device;
+ __iomem char *registers;
+
+ struct pcl *rcv_start_pcl, *rcv_pcl;
+ __le32 *rcv_buffer;
+
+ dma_addr_t rcv_start_pcl_bus, rcv_pcl_bus, rcv_buffer_bus;
+
+ spinlock_t client_list_lock;
+ struct list_head client_list;
+
+ struct miscdevice misc;
+ struct list_head link;
+ struct kref kref;
+};
+
+static inline struct pcilynx *
+lynx_get(struct pcilynx *lynx)
+{
+ kref_get(&lynx->kref);
+
+ return lynx;
+}
+
+static void
+lynx_release(struct kref *kref)
+{
+ kfree(container_of(kref, struct pcilynx, kref));
+}
+
+static inline void
+lynx_put(struct pcilynx *lynx)
+{
+ kref_put(&lynx->kref, lynx_release);
+}
+
+struct client {
+ struct pcilynx *lynx;
+ u32 tcode_mask;
+ struct packet_buffer buffer;
+ struct list_head link;
+};
+
+static DEFINE_MUTEX(card_mutex);
+static LIST_HEAD(card_list);
+
+static int
+packet_buffer_init(struct packet_buffer *buffer, size_t capacity)
+{
+ buffer->data = kmalloc(capacity, GFP_KERNEL);
+ if (buffer->data == NULL)
+ return -ENOMEM;
+ buffer->head = (struct packet *) buffer->data;
+ buffer->tail = (struct packet *) buffer->data;
+ buffer->capacity = capacity;
+ buffer->lost_packet_count = 0;
+ atomic_set(&buffer->size, 0);
+ init_waitqueue_head(&buffer->wait);
+
+ return 0;
+}
+
+static void
+packet_buffer_destroy(struct packet_buffer *buffer)
+{
+ kfree(buffer->data);
+}
+
+static int
+packet_buffer_get(struct client *client, char __user *data, size_t user_length)
+{
+ struct packet_buffer *buffer = &client->buffer;
+ size_t length;
+ char *end;
+
+ if (wait_event_interruptible(buffer->wait,
+ atomic_read(&buffer->size) > 0) ||
+ list_empty(&client->lynx->link))
+ return -ERESTARTSYS;
+
+ if (atomic_read(&buffer->size) == 0)
+ return -ENODEV;
+
+ /* FIXME: Check length <= user_length. */
+
+ end = buffer->data + buffer->capacity;
+ length = buffer->head->length;
+
+ if (&buffer->head->data[length] < end) {
+ if (copy_to_user(data, buffer->head->data, length))
+ return -EFAULT;
+ buffer->head = (struct packet *) &buffer->head->data[length];
+ } else {
+ size_t split = end - buffer->head->data;
+
+ if (copy_to_user(data, buffer->head->data, split))
+ return -EFAULT;
+ if (copy_to_user(data + split, buffer->data, length - split))
+ return -EFAULT;
+ buffer->head = (struct packet *) &buffer->data[length - split];
+ }
+
+ /*
+ * Decrease buffer->size as the last thing, since this is what
+ * keeps the interrupt from overwriting the packet we are
+ * retrieving from the buffer.
+ */
+ atomic_sub(sizeof(struct packet) + length, &buffer->size);
+
+ return length;
+}
+
+static void
+packet_buffer_put(struct packet_buffer *buffer, void *data, size_t length)
+{
+ char *end;
+
+ buffer->total_packet_count++;
+
+ if (buffer->capacity <
+ atomic_read(&buffer->size) + sizeof(struct packet) + length) {
+ buffer->lost_packet_count++;
+ return;
+ }
+
+ end = buffer->data + buffer->capacity;
+ buffer->tail->length = length;
+
+ if (&buffer->tail->data[length] < end) {
+ memcpy(buffer->tail->data, data, length);
+ buffer->tail = (struct packet *) &buffer->tail->data[length];
+ } else {
+ size_t split = end - buffer->tail->data;
+
+ memcpy(buffer->tail->data, data, split);
+ memcpy(buffer->data, data + split, length - split);
+ buffer->tail = (struct packet *) &buffer->data[length - split];
+ }
+
+ /* Finally, adjust buffer size and wake up userspace reader. */
+
+ atomic_add(sizeof(struct packet) + length, &buffer->size);
+ wake_up_interruptible(&buffer->wait);
+}
+
+static inline void
+reg_write(struct pcilynx *lynx, int offset, u32 data)
+{
+ writel(data, lynx->registers + offset);
+}
+
+static inline u32
+reg_read(struct pcilynx *lynx, int offset)
+{
+ return readl(lynx->registers + offset);
+}
+
+static inline void
+reg_set_bits(struct pcilynx *lynx, int offset, u32 mask)
+{
+ reg_write(lynx, offset, (reg_read(lynx, offset) | mask));
+}
+
+/*
+ * Maybe the pcl programs could be set up to just append data instead
+ * of using a whole packet.
+ */
+static inline void
+run_pcl(struct pcilynx *lynx, dma_addr_t pcl_bus,
+ int dmachan)
+{
+ reg_write(lynx, DMA0_CURRENT_PCL + dmachan * 0x20, pcl_bus);
+ reg_write(lynx, DMA0_CHAN_CTRL + dmachan * 0x20,
+ DMA_CHAN_CTRL_ENABLE | DMA_CHAN_CTRL_LINK);
+}
+
+static int
+set_phy_reg(struct pcilynx *lynx, int addr, int val)
+{
+ if (addr > 15) {
+ dev_err(&lynx->pci_device->dev,
+ "PHY register address %d out of range\n", addr);
+ return -1;
+ }
+ if (val > 0xff) {
+ dev_err(&lynx->pci_device->dev,
+ "PHY register value %d out of range\n", val);
+ return -1;
+ }
+ reg_write(lynx, LINK_PHY, LINK_PHY_WRITE |
+ LINK_PHY_ADDR(addr) | LINK_PHY_WDATA(val));
+
+ return 0;
+}
+
+static int
+nosy_open(struct inode *inode, struct file *file)
+{
+ int minor = iminor(inode);
+ struct client *client;
+ struct pcilynx *tmp, *lynx = NULL;
+
+ mutex_lock(&card_mutex);
+ list_for_each_entry(tmp, &card_list, link)
+ if (tmp->misc.minor == minor) {
+ lynx = lynx_get(tmp);
+ break;
+ }
+ mutex_unlock(&card_mutex);
+ if (lynx == NULL)
+ return -ENODEV;
+
+ client = kmalloc(sizeof *client, GFP_KERNEL);
+ if (client == NULL)
+ goto fail;
+
+ client->tcode_mask = ~0;
+ client->lynx = lynx;
+ INIT_LIST_HEAD(&client->link);
+
+ if (packet_buffer_init(&client->buffer, 128 * 1024) < 0)
+ goto fail;
+
+ file->private_data = client;
+
+ return 0;
+fail:
+ kfree(client);
+ lynx_put(lynx);
+
+ return -ENOMEM;
+}
+
+static int
+nosy_release(struct inode *inode, struct file *file)
+{
+ struct client *client = file->private_data;
+ struct pcilynx *lynx = client->lynx;
+
+ spin_lock_irq(&lynx->client_list_lock);
+ list_del_init(&client->link);
+ spin_unlock_irq(&lynx->client_list_lock);
+
+ packet_buffer_destroy(&client->buffer);
+ kfree(client);
+ lynx_put(lynx);
+
+ return 0;
+}
+
+static unsigned int
+nosy_poll(struct file *file, poll_table *pt)
+{
+ struct client *client = file->private_data;
+ unsigned int ret = 0;
+
+ poll_wait(file, &client->buffer.wait, pt);
+
+ if (atomic_read(&client->buffer.size) > 0)
+ ret = POLLIN | POLLRDNORM;
+
+ if (list_empty(&client->lynx->link))
+ ret |= POLLHUP;
+
+ return ret;
+}
+
+static ssize_t
+nosy_read(struct file *file, char __user *buffer, size_t count, loff_t *offset)
+{
+ struct client *client = file->private_data;
+
+ return packet_buffer_get(client, buffer, count);
+}
+
+static long
+nosy_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct client *client = file->private_data;
+ spinlock_t *client_list_lock = &client->lynx->client_list_lock;
+ struct nosy_stats stats;
+
+ switch (cmd) {
+ case NOSY_IOC_GET_STATS:
+ spin_lock_irq(client_list_lock);
+ stats.total_packet_count = client->buffer.total_packet_count;
+ stats.lost_packet_count = client->buffer.lost_packet_count;
+ spin_unlock_irq(client_list_lock);
+
+ if (copy_to_user((void __user *) arg, &stats, sizeof stats))
+ return -EFAULT;
+ else
+ return 0;
+
+ case NOSY_IOC_START:
+ spin_lock_irq(client_list_lock);
+ list_add_tail(&client->link, &client->lynx->client_list);
+ spin_unlock_irq(client_list_lock);
+
+ return 0;
+
+ case NOSY_IOC_STOP:
+ spin_lock_irq(client_list_lock);
+ list_del_init(&client->link);
+ spin_unlock_irq(client_list_lock);
+
+ return 0;
+
+ case NOSY_IOC_FILTER:
+ spin_lock_irq(client_list_lock);
+ client->tcode_mask = arg;
+ spin_unlock_irq(client_list_lock);
+
+ return 0;
+
+ default:
+ return -EINVAL;
+ /* Flush buffer, configure filter. */
+ }
+}
+
+static const struct file_operations nosy_ops = {
+ .owner = THIS_MODULE,
+ .read = nosy_read,
+ .unlocked_ioctl = nosy_ioctl,
+ .poll = nosy_poll,
+ .open = nosy_open,
+ .release = nosy_release,
+};
+
+#define PHY_PACKET_SIZE 12 /* 1 payload, 1 inverse, 1 ack = 3 quadlets */
+
+static void
+packet_irq_handler(struct pcilynx *lynx)
+{
+ struct client *client;
+ u32 tcode_mask, tcode;
+ size_t length;
+ struct timeval tv;
+
+ /* FIXME: Also report rcv_speed. */
+
+ length = __le32_to_cpu(lynx->rcv_pcl->pcl_status) & 0x00001fff;
+ tcode = __le32_to_cpu(lynx->rcv_buffer[1]) >> 4 & 0xf;
+
+ do_gettimeofday(&tv);
+ lynx->rcv_buffer[0] = (__force __le32)tv.tv_usec;
+
+ if (length == PHY_PACKET_SIZE)
+ tcode_mask = 1 << TCODE_PHY_PACKET;
+ else
+ tcode_mask = 1 << tcode;
+
+ spin_lock(&lynx->client_list_lock);
+
+ list_for_each_entry(client, &lynx->client_list, link)
+ if (client->tcode_mask & tcode_mask)
+ packet_buffer_put(&client->buffer,
+ lynx->rcv_buffer, length + 4);
+
+ spin_unlock(&lynx->client_list_lock);
+}
+
+static void
+bus_reset_irq_handler(struct pcilynx *lynx)
+{
+ struct client *client;
+ struct timeval tv;
+
+ do_gettimeofday(&tv);
+
+ spin_lock(&lynx->client_list_lock);
+
+ list_for_each_entry(client, &lynx->client_list, link)
+ packet_buffer_put(&client->buffer, &tv.tv_usec, 4);
+
+ spin_unlock(&lynx->client_list_lock);
+}
+
+static irqreturn_t
+irq_handler(int irq, void *device)
+{
+ struct pcilynx *lynx = device;
+ u32 pci_int_status;
+
+ pci_int_status = reg_read(lynx, PCI_INT_STATUS);
+
+ if (pci_int_status == ~0)
+ /* Card was ejected. */
+ return IRQ_NONE;
+
+ if ((pci_int_status & PCI_INT_INT_PEND) == 0)
+ /* Not our interrupt, bail out quickly. */
+ return IRQ_NONE;
+
+ if ((pci_int_status & PCI_INT_P1394_INT) != 0) {
+ u32 link_int_status;
+
+ link_int_status = reg_read(lynx, LINK_INT_STATUS);
+ reg_write(lynx, LINK_INT_STATUS, link_int_status);
+
+ if ((link_int_status & LINK_INT_PHY_BUSRESET) > 0)
+ bus_reset_irq_handler(lynx);
+ }
+
+ /* Clear the PCI_INT_STATUS register only after clearing the
+ * LINK_INT_STATUS register; otherwise the PCI_INT_P1394 will
+ * be set again immediately. */
+
+ reg_write(lynx, PCI_INT_STATUS, pci_int_status);
+
+ if ((pci_int_status & PCI_INT_DMA0_HLT) > 0) {
+ packet_irq_handler(lynx);
+ run_pcl(lynx, lynx->rcv_start_pcl_bus, 0);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static void
+remove_card(struct pci_dev *dev)
+{
+ struct pcilynx *lynx = pci_get_drvdata(dev);
+ struct client *client;
+
+ mutex_lock(&card_mutex);
+ list_del_init(&lynx->link);
+ misc_deregister(&lynx->misc);
+ mutex_unlock(&card_mutex);
+
+ reg_write(lynx, PCI_INT_ENABLE, 0);
+ free_irq(lynx->pci_device->irq, lynx);
+
+ spin_lock_irq(&lynx->client_list_lock);
+ list_for_each_entry(client, &lynx->client_list, link)
+ wake_up_interruptible(&client->buffer.wait);
+ spin_unlock_irq(&lynx->client_list_lock);
+
+ pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
+ lynx->rcv_start_pcl, lynx->rcv_start_pcl_bus);
+ pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
+ lynx->rcv_pcl, lynx->rcv_pcl_bus);
+ pci_free_consistent(lynx->pci_device, PAGE_SIZE,
+ lynx->rcv_buffer, lynx->rcv_buffer_bus);
+
+ iounmap(lynx->registers);
+ pci_disable_device(dev);
+ lynx_put(lynx);
+}
+
+#define RCV_BUFFER_SIZE (16 * 1024)
+
+static int __devinit
+add_card(struct pci_dev *dev, const struct pci_device_id *unused)
+{
+ struct pcilynx *lynx;
+ u32 p, end;
+ int ret, i;
+
+ if (pci_set_dma_mask(dev, 0xffffffff)) {
+ dev_err(&dev->dev,
+ "DMA address limits not supported for PCILynx hardware\n");
+ return -ENXIO;
+ }
+ if (pci_enable_device(dev)) {
+ dev_err(&dev->dev, "Failed to enable PCILynx hardware\n");
+ return -ENXIO;
+ }
+ pci_set_master(dev);
+
+ lynx = kzalloc(sizeof *lynx, GFP_KERNEL);
+ if (lynx == NULL) {
+ dev_err(&dev->dev, "Failed to allocate control structure\n");
+ ret = -ENOMEM;
+ goto fail_disable;
+ }
+ lynx->pci_device = dev;
+ pci_set_drvdata(dev, lynx);
+
+ spin_lock_init(&lynx->client_list_lock);
+ INIT_LIST_HEAD(&lynx->client_list);
+ kref_init(&lynx->kref);
+
+ lynx->registers = ioremap_nocache(pci_resource_start(dev, 0),
+ PCILYNX_MAX_REGISTER);
+
+ lynx->rcv_start_pcl = pci_alloc_consistent(lynx->pci_device,
+ sizeof(struct pcl), &lynx->rcv_start_pcl_bus);
+ lynx->rcv_pcl = pci_alloc_consistent(lynx->pci_device,
+ sizeof(struct pcl), &lynx->rcv_pcl_bus);
+ lynx->rcv_buffer = pci_alloc_consistent(lynx->pci_device,
+ RCV_BUFFER_SIZE, &lynx->rcv_buffer_bus);
+ if (lynx->rcv_start_pcl == NULL ||
+ lynx->rcv_pcl == NULL ||
+ lynx->rcv_buffer == NULL) {
+ dev_err(&dev->dev, "Failed to allocate receive buffer\n");
+ ret = -ENOMEM;
+ goto fail_deallocate;
+ }
+ lynx->rcv_start_pcl->next = cpu_to_le32(lynx->rcv_pcl_bus);
+ lynx->rcv_pcl->next = cpu_to_le32(PCL_NEXT_INVALID);
+ lynx->rcv_pcl->async_error_next = cpu_to_le32(PCL_NEXT_INVALID);
+
+ lynx->rcv_pcl->buffer[0].control =
+ cpu_to_le32(PCL_CMD_RCV | PCL_BIGENDIAN | 2044);
+ lynx->rcv_pcl->buffer[0].pointer =
+ cpu_to_le32(lynx->rcv_buffer_bus + 4);
+ p = lynx->rcv_buffer_bus + 2048;
+ end = lynx->rcv_buffer_bus + RCV_BUFFER_SIZE;
+ for (i = 1; p < end; i++, p += 2048) {
+ lynx->rcv_pcl->buffer[i].control =
+ cpu_to_le32(PCL_CMD_RCV | PCL_BIGENDIAN | 2048);
+ lynx->rcv_pcl->buffer[i].pointer = cpu_to_le32(p);
+ }
+ lynx->rcv_pcl->buffer[i - 1].control |= cpu_to_le32(PCL_LAST_BUFF);
+
+ reg_set_bits(lynx, MISC_CONTROL, MISC_CONTROL_SWRESET);
+ /* Fix buggy cards with autoboot pin not tied low: */
+ reg_write(lynx, DMA0_CHAN_CTRL, 0);
+ reg_write(lynx, DMA_GLOBAL_REGISTER, 0x00 << 24);
+
+#if 0
+ /* 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");
+ }
+#endif
+
+ /* Setup the general receive FIFO max size. */
+ reg_write(lynx, FIFO_SIZES, 255);
+
+ reg_set_bits(lynx, PCI_INT_ENABLE, PCI_INT_DMA_ALL);
+
+ reg_write(lynx, LINK_INT_ENABLE,
+ LINK_INT_PHY_TIME_OUT | LINK_INT_PHY_REG_RCVD |
+ LINK_INT_PHY_BUSRESET | LINK_INT_IT_STUCK |
+ LINK_INT_AT_STUCK | LINK_INT_SNTRJ |
+ LINK_INT_TC_ERR | LINK_INT_GRF_OVER_FLOW |
+ LINK_INT_ITF_UNDER_FLOW | LINK_INT_ATF_UNDER_FLOW);
+
+ /* Disable the L flag in self ID packets. */
+ set_phy_reg(lynx, 4, 0);
+
+ /* Put this baby into snoop mode */
+ reg_set_bits(lynx, LINK_CONTROL, LINK_CONTROL_SNOOP_ENABLE);
+
+ run_pcl(lynx, lynx->rcv_start_pcl_bus, 0);
+
+ if (request_irq(dev->irq, irq_handler, IRQF_SHARED,
+ driver_name, lynx)) {
+ dev_err(&dev->dev,
+ "Failed to allocate shared interrupt %d\n", dev->irq);
+ ret = -EIO;
+ goto fail_deallocate;
+ }
+
+ lynx->misc.parent = &dev->dev;
+ lynx->misc.minor = MISC_DYNAMIC_MINOR;
+ lynx->misc.name = "nosy";
+ lynx->misc.fops = &nosy_ops;
+
+ mutex_lock(&card_mutex);
+ ret = misc_register(&lynx->misc);
+ if (ret) {
+ dev_err(&dev->dev, "Failed to register misc char device\n");
+ mutex_unlock(&card_mutex);
+ goto fail_free_irq;
+ }
+ list_add_tail(&lynx->link, &card_list);
+ mutex_unlock(&card_mutex);
+
+ dev_info(&dev->dev,
+ "Initialized PCILynx IEEE1394 card, irq=%d\n", dev->irq);
+
+ return 0;
+
+fail_free_irq:
+ reg_write(lynx, PCI_INT_ENABLE, 0);
+ free_irq(lynx->pci_device->irq, lynx);
+
+fail_deallocate:
+ if (lynx->rcv_start_pcl)
+ pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
+ lynx->rcv_start_pcl, lynx->rcv_start_pcl_bus);
+ if (lynx->rcv_pcl)
+ pci_free_consistent(lynx->pci_device, sizeof(struct pcl),
+ lynx->rcv_pcl, lynx->rcv_pcl_bus);
+ if (lynx->rcv_buffer)
+ pci_free_consistent(lynx->pci_device, PAGE_SIZE,
+ lynx->rcv_buffer, lynx->rcv_buffer_bus);
+ iounmap(lynx->registers);
+ kfree(lynx);
+
+fail_disable:
+ pci_disable_device(dev);
+
+ return ret;
+}
+
+static struct pci_device_id pci_table[] __devinitdata = {
+ {
+ .vendor = PCI_VENDOR_ID_TI,
+ .device = PCI_DEVICE_ID_TI_PCILYNX,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ },
+ { } /* Terminating entry */
+};
+
+static struct pci_driver lynx_pci_driver = {
+ .name = driver_name,
+ .id_table = pci_table,
+ .probe = add_card,
+ .remove = remove_card,
+};
+
+MODULE_AUTHOR("Kristian Hoegsberg");
+MODULE_DESCRIPTION("Snoop mode driver for TI pcilynx 1394 controllers");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, pci_table);
+
+static int __init nosy_init(void)
+{
+ return pci_register_driver(&lynx_pci_driver);
+}
+
+static void __exit nosy_cleanup(void)
+{
+ pci_unregister_driver(&lynx_pci_driver);
+
+ pr_info("Unloaded %s\n", driver_name);
+}
+
+module_init(nosy_init);
+module_exit(nosy_cleanup);
diff --git a/drivers/firewire/nosy.h b/drivers/firewire/nosy.h
new file mode 100644
index 000000000000..078ff27f4756
--- /dev/null
+++ b/drivers/firewire/nosy.h
@@ -0,0 +1,237 @@
+/*
+ * Chip register definitions for PCILynx chipset. Based on pcilynx.h
+ * from the Linux 1394 drivers, but modified a bit so the names here
+ * match the specification exactly (even though they have weird names,
+ * like xxx_OVER_FLOW, or arbitrary abbreviations like SNTRJ for "sent
+ * reject" etc.)
+ */
+
+#define PCILYNX_MAX_REGISTER 0xfff
+#define PCILYNX_MAX_MEMORY 0xffff
+
+#define PCI_LATENCY_CACHELINE 0x0c
+
+#define MISC_CONTROL 0x40
+#define MISC_CONTROL_SWRESET (1<<0)
+
+#define SERIAL_EEPROM_CONTROL 0x44
+
+#define PCI_INT_STATUS 0x48
+#define PCI_INT_ENABLE 0x4c
+/* status and enable have identical bit numbers */
+#define PCI_INT_INT_PEND (1<<31)
+#define PCI_INT_FRC_INT (1<<30)
+#define PCI_INT_SLV_ADR_PERR (1<<28)
+#define PCI_INT_SLV_DAT_PERR (1<<27)
+#define PCI_INT_MST_DAT_PERR (1<<26)
+#define PCI_INT_MST_DEV_TO (1<<25)
+#define PCI_INT_INT_SLV_TO (1<<23)
+#define PCI_INT_AUX_TO (1<<18)
+#define PCI_INT_AUX_INT (1<<17)
+#define PCI_INT_P1394_INT (1<<16)
+#define PCI_INT_DMA4_PCL (1<<9)
+#define PCI_INT_DMA4_HLT (1<<8)
+#define PCI_INT_DMA3_PCL (1<<7)
+#define PCI_INT_DMA3_HLT (1<<6)
+#define PCI_INT_DMA2_PCL (1<<5)
+#define PCI_INT_DMA2_HLT (1<<4)
+#define PCI_INT_DMA1_PCL (1<<3)
+#define PCI_INT_DMA1_HLT (1<<2)
+#define PCI_INT_DMA0_PCL (1<<1)
+#define PCI_INT_DMA0_HLT (1<<0)
+/* all DMA interrupts combined: */
+#define PCI_INT_DMA_ALL 0x3ff
+
+#define PCI_INT_DMA_HLT(chan) (1 << (chan * 2))
+#define PCI_INT_DMA_PCL(chan) (1 << (chan * 2 + 1))
+
+#define LBUS_ADDR 0xb4
+#define LBUS_ADDR_SEL_RAM (0x0<<16)
+#define LBUS_ADDR_SEL_ROM (0x1<<16)
+#define LBUS_ADDR_SEL_AUX (0x2<<16)
+#define LBUS_ADDR_SEL_ZV (0x3<<16)
+
+#define GPIO_CTRL_A 0xb8
+#define GPIO_CTRL_B 0xbc
+#define GPIO_DATA_BASE 0xc0
+
+#define DMA_BREG(base, chan) (base + chan * 0x20)
+#define DMA_SREG(base, chan) (base + chan * 0x10)
+
+#define PCL_NEXT_INVALID (1<<0)
+
+/* transfer commands */
+#define PCL_CMD_RCV (0x1<<24)
+#define PCL_CMD_RCV_AND_UPDATE (0xa<<24)
+#define PCL_CMD_XMT (0x2<<24)
+#define PCL_CMD_UNFXMT (0xc<<24)
+#define PCL_CMD_PCI_TO_LBUS (0x8<<24)
+#define PCL_CMD_LBUS_TO_PCI (0x9<<24)
+
+/* aux commands */
+#define PCL_CMD_NOP (0x0<<24)
+#define PCL_CMD_LOAD (0x3<<24)
+#define PCL_CMD_STOREQ (0x4<<24)
+#define PCL_CMD_STORED (0xb<<24)
+#define PCL_CMD_STORE0 (0x5<<24)
+#define PCL_CMD_STORE1 (0x6<<24)
+#define PCL_CMD_COMPARE (0xe<<24)
+#define PCL_CMD_SWAP_COMPARE (0xf<<24)
+#define PCL_CMD_ADD (0xd<<24)
+#define PCL_CMD_BRANCH (0x7<<24)
+
+/* BRANCH condition codes */
+#define PCL_COND_DMARDY_SET (0x1<<20)
+#define PCL_COND_DMARDY_CLEAR (0x2<<20)
+
+#define PCL_GEN_INTR (1<<19)
+#define PCL_LAST_BUFF (1<<18)
+#define PCL_LAST_CMD (PCL_LAST_BUFF)
+#define PCL_WAITSTAT (1<<17)
+#define PCL_BIGENDIAN (1<<16)
+#define PCL_ISOMODE (1<<12)
+
+#define DMA0_PREV_PCL 0x100
+#define DMA1_PREV_PCL 0x120
+#define DMA2_PREV_PCL 0x140
+#define DMA3_PREV_PCL 0x160
+#define DMA4_PREV_PCL 0x180
+#define DMA_PREV_PCL(chan) (DMA_BREG(DMA0_PREV_PCL, chan))
+
+#define DMA0_CURRENT_PCL 0x104
+#define DMA1_CURRENT_PCL 0x124
+#define DMA2_CURRENT_PCL 0x144
+#define DMA3_CURRENT_PCL 0x164
+#define DMA4_CURRENT_PCL 0x184
+#define DMA_CURRENT_PCL(chan) (DMA_BREG(DMA0_CURRENT_PCL, chan))
+
+#define DMA0_CHAN_STAT 0x10c
+#define DMA1_CHAN_STAT 0x12c
+#define DMA2_CHAN_STAT 0x14c
+#define DMA3_CHAN_STAT 0x16c
+#define DMA4_CHAN_STAT 0x18c
+#define DMA_CHAN_STAT(chan) (DMA_BREG(DMA0_CHAN_STAT, chan))
+/* CHAN_STATUS registers share bits */
+#define DMA_CHAN_STAT_SELFID (1<<31)
+#define DMA_CHAN_STAT_ISOPKT (1<<30)
+#define DMA_CHAN_STAT_PCIERR (1<<29)
+#define DMA_CHAN_STAT_PKTERR (1<<28)
+#define DMA_CHAN_STAT_PKTCMPL (1<<27)
+#define DMA_CHAN_STAT_SPECIALACK (1<<14)
+
+#define DMA0_CHAN_CTRL 0x110
+#define DMA1_CHAN_CTRL 0x130
+#define DMA2_CHAN_CTRL 0x150
+#define DMA3_CHAN_CTRL 0x170
+#define DMA4_CHAN_CTRL 0x190
+#define DMA_CHAN_CTRL(chan) (DMA_BREG(DMA0_CHAN_CTRL, chan))
+/* CHAN_CTRL registers share bits */
+#define DMA_CHAN_CTRL_ENABLE (1<<31)
+#define DMA_CHAN_CTRL_BUSY (1<<30)
+#define DMA_CHAN_CTRL_LINK (1<<29)
+
+#define DMA0_READY 0x114
+#define DMA1_READY 0x134
+#define DMA2_READY 0x154
+#define DMA3_READY 0x174
+#define DMA4_READY 0x194
+#define DMA_READY(chan) (DMA_BREG(DMA0_READY, chan))
+
+#define DMA_GLOBAL_REGISTER 0x908
+
+#define FIFO_SIZES 0xa00
+
+#define FIFO_CONTROL 0xa10
+#define FIFO_CONTROL_GRF_FLUSH (1<<4)
+#define FIFO_CONTROL_ITF_FLUSH (1<<3)
+#define FIFO_CONTROL_ATF_FLUSH (1<<2)
+
+#define FIFO_XMIT_THRESHOLD 0xa14
+
+#define DMA0_WORD0_CMP_VALUE 0xb00
+#define DMA1_WORD0_CMP_VALUE 0xb10
+#define DMA2_WORD0_CMP_VALUE 0xb20
+#define DMA3_WORD0_CMP_VALUE 0xb30
+#define DMA4_WORD0_CMP_VALUE 0xb40
+#define DMA_WORD0_CMP_VALUE(chan) (DMA_SREG(DMA0_WORD0_CMP_VALUE, chan))
+
+#define DMA0_WORD0_CMP_ENABLE 0xb04
+#define DMA1_WORD0_CMP_ENABLE 0xb14
+#define DMA2_WORD0_CMP_ENABLE 0xb24
+#define DMA3_WORD0_CMP_ENABLE 0xb34
+#define DMA4_WORD0_CMP_ENABLE 0xb44
+#define DMA_WORD0_CMP_ENABLE(chan) (DMA_SREG(DMA0_WORD0_CMP_ENABLE, chan))
+
+#define DMA0_WORD1_CMP_VALUE 0xb08
+#define DMA1_WORD1_CMP_VALUE 0xb18
+#define DMA2_WORD1_CMP_VALUE 0xb28
+#define DMA3_WORD1_CMP_VALUE 0xb38
+#define DMA4_WORD1_CMP_VALUE 0xb48
+#define DMA_WORD1_CMP_VALUE(chan) (DMA_SREG(DMA0_WORD1_CMP_VALUE, chan))
+
+#define DMA0_WORD1_CMP_ENABLE 0xb0c
+#define DMA1_WORD1_CMP_ENABLE 0xb1c
+#define DMA2_WORD1_CMP_ENABLE 0xb2c
+#define DMA3_WORD1_CMP_ENABLE 0xb3c
+#define DMA4_WORD1_CMP_ENABLE 0xb4c
+#define DMA_WORD1_CMP_ENABLE(chan) (DMA_SREG(DMA0_WORD1_CMP_ENABLE, chan))
+/* word 1 compare enable flags */
+#define DMA_WORD1_CMP_MATCH_OTHERBUS (1<<15)
+#define DMA_WORD1_CMP_MATCH_BROADCAST (1<<14)
+#define DMA_WORD1_CMP_MATCH_BUS_BCAST (1<<13)
+#define DMA_WORD1_CMP_MATCH_LOCAL_NODE (1<<12)
+#define DMA_WORD1_CMP_MATCH_EXACT (1<<11)
+#define DMA_WORD1_CMP_ENABLE_SELF_ID (1<<10)
+#define DMA_WORD1_CMP_ENABLE_MASTER (1<<8)
+
+#define LINK_ID 0xf00
+#define LINK_ID_BUS(id) (id<<22)
+#define LINK_ID_NODE(id) (id<<16)
+
+#define LINK_CONTROL 0xf04
+#define LINK_CONTROL_BUSY (1<<29)
+#define LINK_CONTROL_TX_ISO_EN (1<<26)
+#define LINK_CONTROL_RX_ISO_EN (1<<25)
+#define LINK_CONTROL_TX_ASYNC_EN (1<<24)
+#define LINK_CONTROL_RX_ASYNC_EN (1<<23)
+#define LINK_CONTROL_RESET_TX (1<<21)
+#define LINK_CONTROL_RESET_RX (1<<20)
+#define LINK_CONTROL_CYCMASTER (1<<11)
+#define LINK_CONTROL_CYCSOURCE (1<<10)
+#define LINK_CONTROL_CYCTIMEREN (1<<9)
+#define LINK_CONTROL_RCV_CMP_VALID (1<<7)
+#define LINK_CONTROL_SNOOP_ENABLE (1<<6)
+
+#define CYCLE_TIMER 0xf08
+
+#define LINK_PHY 0xf0c
+#define LINK_PHY_READ (1<<31)
+#define LINK_PHY_WRITE (1<<30)
+#define LINK_PHY_ADDR(addr) (addr<<24)
+#define LINK_PHY_WDATA(data) (data<<16)
+#define LINK_PHY_RADDR(addr) (addr<<8)
+
+#define LINK_INT_STATUS 0xf14
+#define LINK_INT_ENABLE 0xf18
+/* status and enable have identical bit numbers */
+#define LINK_INT_LINK_INT (1<<31)
+#define LINK_INT_PHY_TIME_OUT (1<<30)
+#define LINK_INT_PHY_REG_RCVD (1<<29)
+#define LINK_INT_PHY_BUSRESET (1<<28)
+#define LINK_INT_TX_RDY (1<<26)
+#define LINK_INT_RX_DATA_RDY (1<<25)
+#define LINK_INT_IT_STUCK (1<<20)
+#define LINK_INT_AT_STUCK (1<<19)
+#define LINK_INT_SNTRJ (1<<17)
+#define LINK_INT_HDR_ERR (1<<16)
+#define LINK_INT_TC_ERR (1<<15)
+#define LINK_INT_CYC_SEC (1<<11)
+#define LINK_INT_CYC_STRT (1<<10)
+#define LINK_INT_CYC_DONE (1<<9)
+#define LINK_INT_CYC_PEND (1<<8)
+#define LINK_INT_CYC_LOST (1<<7)
+#define LINK_INT_CYC_ARB_FAILED (1<<6)
+#define LINK_INT_GRF_OVER_FLOW (1<<5)
+#define LINK_INT_ITF_UNDER_FLOW (1<<4)
+#define LINK_INT_ATF_UNDER_FLOW (1<<3)
+#define LINK_INT_IARB_FAILED (1<<0)
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index 4bda1c1b74ba..7f03540cabe8 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -25,7 +25,6 @@
#include <linux/dma-mapping.h>
#include <linux/firewire.h>
#include <linux/firewire-constants.h>
-#include <linux/gfp.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
@@ -37,8 +36,10 @@
#include <linux/mutex.h>
#include <linux/pci.h>
#include <linux/pci_ids.h>
+#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/string.h>
+#include <linux/time.h>
#include <asm/byteorder.h>
#include <asm/page.h>
@@ -1256,7 +1257,7 @@ static void handle_local_lock(struct fw_ohci *ohci,
struct fw_packet *packet, u32 csr)
{
struct fw_packet response;
- int tcode, length, ext_tcode, sel;
+ int tcode, length, ext_tcode, sel, try;
__be32 *payload, lock_old;
u32 lock_arg, lock_data;
@@ -1283,21 +1284,26 @@ static void handle_local_lock(struct fw_ohci *ohci,
reg_write(ohci, OHCI1394_CSRCompareData, lock_arg);
reg_write(ohci, OHCI1394_CSRControl, sel);
- if (reg_read(ohci, OHCI1394_CSRControl) & 0x80000000)
- lock_old = cpu_to_be32(reg_read(ohci, OHCI1394_CSRData));
- else
- fw_notify("swap not done yet\n");
+ for (try = 0; try < 20; try++)
+ if (reg_read(ohci, OHCI1394_CSRControl) & 0x80000000) {
+ lock_old = cpu_to_be32(reg_read(ohci,
+ OHCI1394_CSRData));
+ fw_fill_response(&response, packet->header,
+ RCODE_COMPLETE,
+ &lock_old, sizeof(lock_old));
+ goto out;
+ }
+
+ fw_error("swap not done (CSR lock timeout)\n");
+ fw_fill_response(&response, packet->header, RCODE_BUSY, NULL, 0);
- fw_fill_response(&response, packet->header,
- RCODE_COMPLETE, &lock_old, sizeof(lock_old));
out:
fw_core_handle_response(&ohci->card, &response);
}
static void handle_local_request(struct context *ctx, struct fw_packet *packet)
{
- u64 offset;
- u32 csr;
+ u64 offset, csr;
if (ctx == &ctx->ohci->at_request_ctx) {
packet->ack = ACK_PENDING;
@@ -1523,7 +1529,7 @@ static void bus_reset_tasklet(unsigned long data)
* was set up before this reset, the old one is now no longer
* in use and we can free it. Update the config rom pointers
* to point to the current config rom and clear the
- * next_config_rom pointer so a new udpate can take place.
+ * next_config_rom pointer so a new update can take place.
*/
if (ohci->next_config_rom != NULL) {
diff --git a/drivers/firewire/sbp2.c b/drivers/firewire/sbp2.c
index 1931964c4fbf..9f76171717e5 100644
--- a/drivers/firewire/sbp2.c
+++ b/drivers/firewire/sbp2.c
@@ -1569,7 +1569,7 @@ static int sbp2_scsi_slave_configure(struct scsi_device *sdev)
sdev->start_stop_pwr_cond = 1;
if (lu->tgt->workarounds & SBP2_WORKAROUND_128K_MAX_TRANS)
- blk_queue_max_sectors(sdev->request_queue, 128 * 1024 / 512);
+ blk_queue_max_hw_sectors(sdev->request_queue, 128 * 1024 / 512);
blk_queue_max_segment_size(sdev->request_queue, SBP2_MAX_SEG_SIZE);