* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: (43 commits)
firewire: cleanups
firewire: fix synchronization of gap counts
firewire: wait until PHY configuration packet was transmitted (fix bus reset loop)
firewire: remove unused struct member
firewire: use bitwise and to get reg in handle_registers
firewire: replace more hex values with defined csr constants
firewire: reread config ROM when device reset the bus
firewire: replace static ROM cache by allocated cache
firewire: fw-ohci: work around generation bug in TI controllers (fix AV/C and more)
firewire: fw-ohci: extend logging of bus generations and node ID
firewire: fw-ohci: conditionally log busReset interrupts
firewire: fw-ohci: don't append to AT context when it's not active
firewire: fw-ohci: log regAccessFail events
firewire: fw-ohci: make sure HCControl register LPS bit is set
firewire: fw-ohci: missing PPC PMac feature calls in failure path
firewire: fw-ohci: untangle a mixed unsigned/signed expression
firewire: debug interrupt events
firewire: fw-ohci: catch self_id_count == 0
firewire: fw-ohci: add self ID error check
firewire: fw-ohci: refactor probe, remove, suspend, resume
...
This can be turned off by ohci1394's module parameter phys_dma=0.
The alternative firewire-ohci driver in drivers/firewire uses filtered physical
-DMA, hence is not yet suitable for remote debugging.
+DMA by default, which is more secure but not suitable for remote debugging.
+Compile the driver with CONFIG_FIREWIRE_OHCI_REMOTE_DMA (Kernel hacking menu:
+Remote debugging over FireWire with firewire-ohci) to get unfiltered physical
+DMA.
-Because ohci1394 depends on the PCI enumeration to be completed, an
-initialization routine which runs pretty early (long before console_init()
-which makes the printk buffer appear on the console can be called) was written.
+Because ohci1394 and firewire-ohci depend on the PCI enumeration to be
+completed, an initialization routine which runs pretty early has been
+implemented for x86. This routine runs long before console_init() can be
+called, i.e. before the printk buffer appears on the console.
To activate it, enable CONFIG_PROVIDE_OHCI1394_DMA_INIT (Kernel hacking menu:
-Provide code for enabling DMA over FireWire early on boot) and pass the
-parameter "ohci1394_dma=early" to the recompiled kernel on boot.
+Remote debugging over FireWire early on boot) and pass the parameter
+"ohci1394_dma=early" to the recompiled kernel on boot.
Tools
-----
directive, use "install modulename /bin/true" for the modules to be
blacklisted.
+config FIREWIRE_OHCI_DEBUG
+ bool
+ depends on FIREWIRE_OHCI
+ default y
+
config FIREWIRE_SBP2
tristate "Support for storage devices (SBP-2 protocol driver)"
depends on FIREWIRE && SCSI
return 0;
}
-EXPORT_SYMBOL(fw_core_add_descriptor);
void
fw_core_remove_descriptor(struct fw_descriptor *desc)
mutex_unlock(&card_mutex);
}
-EXPORT_SYMBOL(fw_core_remove_descriptor);
static const char gap_count_table[] = {
63, 5, 7, 8, 10, 13, 16, 18, 21, 24, 26, 29, 32, 35, 37, 40
struct bm_data bmd;
unsigned long flags;
int root_id, new_root_id, irm_id, gap_count, generation, grace;
- int do_reset = 0;
+ bool do_reset = false;
spin_lock_irqsave(&card->lock, flags);
local_node = card->local_node;
*/
spin_unlock_irqrestore(&card->lock, flags);
goto out;
- } else if (root_device->config_rom[2] & BIB_CMC) {
+ } else if (root_device->cmc) {
/*
* FIXME: I suppose we should set the cmstr bit in the
* STATE_CLEAR register of this node, as described in
gap_count = 63;
/*
- * Finally, figure out if we should do a reset or not. If we've
- * done less that 5 resets with the same physical topology and we
+ * Finally, figure out if we should do a reset or not. If we have
+ * done less than 5 resets with the same physical topology and we
* have either a new root or a new gap count setting, let's do it.
*/
if (card->bm_retries++ < 5 &&
(card->gap_count != gap_count || new_root_id != root_id))
- do_reset = 1;
+ do_reset = true;
spin_unlock_irqrestore(&card->lock, flags);
{
static atomic_t index = ATOMIC_INIT(-1);
- kref_init(&card->kref);
atomic_set(&card->device_count, 0);
card->index = atomic_inc_return(&index);
card->driver = driver;
card->link_speed = link_speed;
card->guid = guid;
- /*
- * The subsystem grabs a reference when the card is added and
- * drops it when the driver calls fw_core_remove_card.
- */
- fw_card_get(card);
-
mutex_lock(&card_mutex);
config_rom = generate_config_rom(card, &length);
list_add_tail(&card->link, &card_list);
cancel_delayed_work_sync(&card->work);
fw_flush_transactions(card);
del_timer_sync(&card->flush_timer);
-
- fw_card_put(card);
}
EXPORT_SYMBOL(fw_core_remove_card);
-struct fw_card *
-fw_card_get(struct fw_card *card)
-{
- kref_get(&card->kref);
-
- return card;
-}
-EXPORT_SYMBOL(fw_card_get);
-
-static void
-release_card(struct kref *kref)
-{
- struct fw_card *card = container_of(kref, struct fw_card, kref);
-
- kfree(card);
-}
-
-/*
- * An assumption for fw_card_put() is that the card driver allocates
- * the fw_card struct with kalloc and that it has been shut down
- * before the last ref is dropped.
- */
-void
-fw_card_put(struct fw_card *card)
-{
- kref_put(&card->kref, release_card);
-}
-EXPORT_SYMBOL(fw_card_put);
-
int
fw_core_initiate_bus_reset(struct fw_card *card, int short_reset)
{
{
struct fw_cdev_get_info *get_info = buffer;
struct fw_cdev_event_bus_reset bus_reset;
+ unsigned long ret = 0;
client->version = get_info->version;
get_info->version = FW_CDEV_VERSION;
+ down_read(&fw_device_rwsem);
+
if (get_info->rom != 0) {
void __user *uptr = u64_to_uptr(get_info->rom);
size_t want = get_info->rom_length;
size_t have = client->device->config_rom_length * 4;
- if (copy_to_user(uptr, client->device->config_rom,
- min(want, have)))
- return -EFAULT;
+ ret = copy_to_user(uptr, client->device->config_rom,
+ min(want, have));
}
get_info->rom_length = client->device->config_rom_length * 4;
+ up_read(&fw_device_rwsem);
+
+ if (ret != 0)
+ return -EFAULT;
+
client->bus_reset_closure = get_info->bus_reset_closure;
if (get_info->bus_reset != 0) {
void __user *uptr = u64_to_uptr(get_info->bus_reset);
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/idr.h>
-#include <linux/rwsem.h>
+#include <linux/string.h>
#include <asm/semaphore.h>
#include <asm/system.h>
#include <linux/ctype.h>
* Take the card lock so we don't set this to NULL while a
* FW_NODE_UPDATED callback is being handled.
*/
- spin_lock_irqsave(&device->card->lock, flags);
+ spin_lock_irqsave(&card->lock, flags);
device->node->data = NULL;
- spin_unlock_irqrestore(&device->card->lock, flags);
+ spin_unlock_irqrestore(&card->lock, flags);
fw_node_put(device->node);
kfree(device->config_rom);
container_of(dattr, struct config_rom_attribute, attr);
struct fw_csr_iterator ci;
u32 *dir;
- int key, value;
+ int key, value, ret = -ENOENT;
+
+ down_read(&fw_device_rwsem);
if (is_fw_unit(dev))
dir = fw_unit(dev)->directory;
fw_csr_iterator_init(&ci, dir);
while (fw_csr_iterator_next(&ci, &key, &value))
- if (attr->key == key)
- return snprintf(buf, buf ? PAGE_SIZE : 0,
- "0x%06x\n", value);
+ if (attr->key == key) {
+ ret = snprintf(buf, buf ? PAGE_SIZE : 0,
+ "0x%06x\n", value);
+ break;
+ }
+
+ up_read(&fw_device_rwsem);
- return -ENOENT;
+ return ret;
}
#define IMMEDIATE_ATTR(name, key) \
container_of(dattr, struct config_rom_attribute, attr);
struct fw_csr_iterator ci;
u32 *dir, *block = NULL, *p, *end;
- int length, key, value, last_key = 0;
+ int length, key, value, last_key = 0, ret = -ENOENT;
char *b;
+ down_read(&fw_device_rwsem);
+
if (is_fw_unit(dev))
dir = fw_unit(dev)->directory;
else
}
if (block == NULL)
- return -ENOENT;
+ goto out;
length = min(block[0] >> 16, 256U);
if (length < 3)
- return -ENOENT;
+ goto out;
if (block[1] != 0 || block[2] != 0)
/* Unknown encoding. */
- return -ENOENT;
+ goto out;
- if (buf == NULL)
- return length * 4;
+ if (buf == NULL) {
+ ret = length * 4;
+ goto out;
+ }
b = buf;
end = &block[length + 1];
/* Strip trailing whitespace and add newline. */
while (b--, (isspace(*b) || *b == '\0') && b > buf);
strcpy(b + 1, "\n");
+ ret = b + 2 - buf;
+ out:
+ up_read(&fw_device_rwsem);
- return b + 2 - buf;
+ return ret;
}
#define TEXT_LEAF_ATTR(name, key) \
config_rom_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct fw_device *device = fw_device(dev);
+ size_t length;
- memcpy(buf, device->config_rom, device->config_rom_length * 4);
+ down_read(&fw_device_rwsem);
+ length = device->config_rom_length * 4;
+ memcpy(buf, device->config_rom, length);
+ up_read(&fw_device_rwsem);
- return device->config_rom_length * 4;
+ return length;
}
static ssize_t
guid_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct fw_device *device = fw_device(dev);
+ int ret;
+
+ down_read(&fw_device_rwsem);
+ ret = snprintf(buf, PAGE_SIZE, "0x%08x%08x\n",
+ device->config_rom[3], device->config_rom[4]);
+ up_read(&fw_device_rwsem);
- return snprintf(buf, PAGE_SIZE, "0x%08x%08x\n",
- device->config_rom[3], device->config_rom[4]);
+ return ret;
}
static struct device_attribute fw_device_attributes[] = {
init_completion(&callback_data.done);
- offset = 0xfffff0000400ULL + index * 4;
+ offset = (CSR_REGISTER_BASE | CSR_CONFIG_ROM) + index * 4;
fw_send_request(device->card, &t, TCODE_READ_QUADLET_REQUEST,
device->node_id, generation, device->max_speed,
offset, NULL, 4, complete_transaction, &callback_data);
return callback_data.rcode;
}
+#define READ_BIB_ROM_SIZE 256
+#define READ_BIB_STACK_SIZE 16
+
/*
* Read the bus info block, perform a speed probe, and read all of the rest of
* the config ROM. We do all this with a cached bus generation. If the bus
*/
static int read_bus_info_block(struct fw_device *device, int generation)
{
- static u32 rom[256];
- u32 stack[16], sp, key;
- int i, end, length;
+ u32 *rom, *stack, *old_rom, *new_rom;
+ u32 sp, key;
+ int i, end, length, ret = -1;
+
+ rom = kmalloc(sizeof(*rom) * READ_BIB_ROM_SIZE +
+ sizeof(*stack) * READ_BIB_STACK_SIZE, GFP_KERNEL);
+ if (rom == NULL)
+ return -ENOMEM;
+
+ stack = &rom[READ_BIB_ROM_SIZE];
device->max_speed = SCODE_100;
/* First read the bus info block. */
for (i = 0; i < 5; i++) {
if (read_rom(device, generation, i, &rom[i]) != RCODE_COMPLETE)
- return -1;
+ goto out;
/*
* As per IEEE1212 7.2, during power-up, devices can
* reply with a 0 for the first quadlet of the config
* retry mechanism will try again later.
*/
if (i == 0 && rom[i] == 0)
- return -1;
+ goto out;
}
device->max_speed = device->node->max_speed;
*/
key = stack[--sp];
i = key & 0xffffff;
- if (i >= ARRAY_SIZE(rom))
+ if (i >= READ_BIB_ROM_SIZE)
/*
* The reference points outside the standard
* config rom area, something's fishy.
*/
- return -1;
+ goto out;
/* Read header quadlet for the block to get the length. */
if (read_rom(device, generation, i, &rom[i]) != RCODE_COMPLETE)
- return -1;
+ goto out;
end = i + (rom[i] >> 16) + 1;
i++;
- if (end > ARRAY_SIZE(rom))
+ if (end > READ_BIB_ROM_SIZE)
/*
* This block extends outside standard config
* area (and the array we're reading it
* into). That's broken, so ignore this
* device.
*/
- return -1;
+ goto out;
/*
* Now read in the block. If this is a directory
while (i < end) {
if (read_rom(device, generation, i, &rom[i]) !=
RCODE_COMPLETE)
- return -1;
+ goto out;
if ((key >> 30) == 3 && (rom[i] >> 30) > 1 &&
- sp < ARRAY_SIZE(stack))
+ sp < READ_BIB_STACK_SIZE)
stack[sp++] = i + rom[i];
i++;
}
length = i;
}
- device->config_rom = kmalloc(length * 4, GFP_KERNEL);
- if (device->config_rom == NULL)
- return -1;
- memcpy(device->config_rom, rom, length * 4);
+ old_rom = device->config_rom;
+ new_rom = kmemdup(rom, length * 4, GFP_KERNEL);
+ if (new_rom == NULL)
+ goto out;
+
+ down_write(&fw_device_rwsem);
+ device->config_rom = new_rom;
device->config_rom_length = length;
+ up_write(&fw_device_rwsem);
- return 0;
+ kfree(old_rom);
+ ret = 0;
+ device->cmc = rom[2] & 1 << 30;
+ out:
+ kfree(rom);
+
+ return ret;
}
static void fw_unit_release(struct device *dev)
return 0;
}
-static DECLARE_RWSEM(idr_rwsem);
+/*
+ * fw_device_rwsem acts as dual purpose mutex:
+ * - serializes accesses to fw_device_idr,
+ * - serializes accesses to fw_device.config_rom/.config_rom_length and
+ * fw_unit.directory, unless those accesses happen at safe occasions
+ */
+DECLARE_RWSEM(fw_device_rwsem);
+
static DEFINE_IDR(fw_device_idr);
int fw_cdev_major;
{
struct fw_device *device;
- down_read(&idr_rwsem);
+ down_read(&fw_device_rwsem);
device = idr_find(&fw_device_idr, MINOR(devt));
if (device)
fw_device_get(device);
- up_read(&idr_rwsem);
+ up_read(&fw_device_rwsem);
return device;
}
device_for_each_child(&device->device, NULL, shutdown_unit);
device_unregister(&device->device);
- down_write(&idr_rwsem);
+ down_write(&fw_device_rwsem);
idr_remove(&fw_device_idr, minor);
- up_write(&idr_rwsem);
+ up_write(&fw_device_rwsem);
fw_device_put(device);
}
err = -ENOMEM;
fw_device_get(device);
- down_write(&idr_rwsem);
+ down_write(&fw_device_rwsem);
if (idr_pre_get(&fw_device_idr, GFP_KERNEL))
err = idr_get_new(&fw_device_idr, device, &minor);
- up_write(&idr_rwsem);
+ up_write(&fw_device_rwsem);
if (err < 0)
goto error;
if (atomic_cmpxchg(&device->state,
FW_DEVICE_INITIALIZING,
FW_DEVICE_RUNNING) == FW_DEVICE_SHUTDOWN) {
- fw_device_shutdown(&device->work.work);
+ fw_device_shutdown(work);
} else {
if (device->config_rom_retries)
fw_notify("created device %s: GUID %08x%08x, S%d00, "
device->device.bus_id,
device->config_rom[3], device->config_rom[4],
1 << device->max_speed);
+ device->config_rom_retries = 0;
}
/*
return;
error_with_cdev:
- down_write(&idr_rwsem);
+ down_write(&fw_device_rwsem);
idr_remove(&fw_device_idr, minor);
- up_write(&idr_rwsem);
+ up_write(&fw_device_rwsem);
error:
fw_device_put(device); /* fw_device_idr's reference */
device_for_each_child(&device->device, NULL, update_unit);
}
+enum {
+ REREAD_BIB_ERROR,
+ REREAD_BIB_GONE,
+ REREAD_BIB_UNCHANGED,
+ REREAD_BIB_CHANGED,
+};
+
+/* Reread and compare bus info block and header of root directory */
+static int reread_bus_info_block(struct fw_device *device, int generation)
+{
+ u32 q;
+ int i;
+
+ for (i = 0; i < 6; i++) {
+ if (read_rom(device, generation, i, &q) != RCODE_COMPLETE)
+ return REREAD_BIB_ERROR;
+
+ if (i == 0 && q == 0)
+ return REREAD_BIB_GONE;
+
+ if (i > device->config_rom_length || q != device->config_rom[i])
+ return REREAD_BIB_CHANGED;
+ }
+
+ return REREAD_BIB_UNCHANGED;
+}
+
+static void fw_device_refresh(struct work_struct *work)
+{
+ struct fw_device *device =
+ container_of(work, struct fw_device, work.work);
+ struct fw_card *card = device->card;
+ int node_id = device->node_id;
+
+ switch (reread_bus_info_block(device, device->generation)) {
+ case REREAD_BIB_ERROR:
+ if (device->config_rom_retries < MAX_RETRIES / 2 &&
+ atomic_read(&device->state) == FW_DEVICE_INITIALIZING) {
+ device->config_rom_retries++;
+ schedule_delayed_work(&device->work, RETRY_DELAY / 2);
+
+ return;
+ }
+ goto give_up;
+
+ case REREAD_BIB_GONE:
+ goto gone;
+
+ case REREAD_BIB_UNCHANGED:
+ if (atomic_cmpxchg(&device->state,
+ FW_DEVICE_INITIALIZING,
+ FW_DEVICE_RUNNING) == FW_DEVICE_SHUTDOWN)
+ goto gone;
+
+ fw_device_update(work);
+ device->config_rom_retries = 0;
+ goto out;
+
+ case REREAD_BIB_CHANGED:
+ break;
+ }
+
+ /*
+ * Something changed. We keep things simple and don't investigate
+ * further. We just destroy all previous units and create new ones.
+ */
+ device_for_each_child(&device->device, NULL, shutdown_unit);
+
+ if (read_bus_info_block(device, device->generation) < 0) {
+ if (device->config_rom_retries < MAX_RETRIES &&
+ atomic_read(&device->state) == FW_DEVICE_INITIALIZING) {
+ device->config_rom_retries++;
+ schedule_delayed_work(&device->work, RETRY_DELAY);
+
+ return;
+ }
+ goto give_up;
+ }
+
+ create_units(device);
+
+ if (atomic_cmpxchg(&device->state,
+ FW_DEVICE_INITIALIZING,
+ FW_DEVICE_RUNNING) == FW_DEVICE_SHUTDOWN)
+ goto gone;
+
+ fw_notify("refreshed device %s\n", device->device.bus_id);
+ device->config_rom_retries = 0;
+ goto out;
+
+ give_up:
+ fw_notify("giving up on refresh of device %s\n", device->device.bus_id);
+ gone:
+ atomic_set(&device->state, FW_DEVICE_SHUTDOWN);
+ fw_device_shutdown(work);
+ out:
+ if (node_id == card->root_node->node_id)
+ schedule_delayed_work(&card->work, 0);
+}
+
void fw_node_event(struct fw_card *card, struct fw_node *node, int event)
{
struct fw_device *device;
case FW_NODE_LINK_ON:
if (!node->link_on)
break;
-
+ create:
device = kzalloc(sizeof(*device), GFP_ATOMIC);
if (device == NULL)
break;
schedule_delayed_work(&device->work, INITIAL_DELAY);
break;
+ case FW_NODE_INITIATED_RESET:
+ device = node->data;
+ if (device == NULL)
+ goto create;
+
+ device->node_id = node->node_id;
+ smp_wmb(); /* update node_id before generation */
+ device->generation = card->generation;
+ if (atomic_cmpxchg(&device->state,
+ FW_DEVICE_RUNNING,
+ FW_DEVICE_INITIALIZING) == FW_DEVICE_RUNNING) {
+ PREPARE_DELAYED_WORK(&device->work, fw_device_refresh);
+ schedule_delayed_work(&device->work,
+ node == card->local_node ? 0 : INITIAL_DELAY);
+ }
+ break;
+
case FW_NODE_UPDATED:
if (!node->link_on || node->data == NULL)
break;
#include <linux/fs.h>
#include <linux/cdev.h>
+#include <linux/rwsem.h>
#include <asm/atomic.h>
enum fw_device_state {
* fw_device.node_id is guaranteed to be current too.
*
* The same applies to fw_device.card->node_id vs. fw_device.generation.
+ *
+ * fw_device.config_rom and fw_device.config_rom_length may be accessed during
+ * the lifetime of any fw_unit belonging to the fw_device, before device_del()
+ * was called on the last fw_unit. Alternatively, they may be accessed while
+ * holding fw_device_rwsem.
*/
struct fw_device {
atomic_t state;
int node_id;
int generation;
unsigned max_speed;
+ bool cmc;
struct fw_card *card;
struct device device;
struct list_head link;
struct fw_attribute_group attribute_group;
};
-static inline struct fw_device *
-fw_device(struct device *dev)
+static inline struct fw_device *fw_device(struct device *dev)
{
return container_of(dev, struct fw_device, device);
}
-static inline int
-fw_device_is_shutdown(struct fw_device *device)
+static inline int fw_device_is_shutdown(struct fw_device *device)
{
return atomic_read(&device->state) == FW_DEVICE_SHUTDOWN;
}
-static inline struct fw_device *
-fw_device_get(struct fw_device *device)
+static inline struct fw_device *fw_device_get(struct fw_device *device)
{
get_device(&device->device);
return device;
}
-static inline void
-fw_device_put(struct fw_device *device)
+static inline void fw_device_put(struct fw_device *device)
{
put_device(&device->device);
}
void fw_device_cdev_update(struct fw_device *device);
void fw_device_cdev_remove(struct fw_device *device);
+extern struct rw_semaphore fw_device_rwsem;
extern int fw_cdev_major;
+/*
+ * fw_unit.directory must not be accessed after device_del(&fw_unit.device).
+ */
struct fw_unit {
struct device device;
u32 *directory;
struct fw_attribute_group attribute_group;
};
-static inline struct fw_unit *
-fw_unit(struct device *dev)
+static inline struct fw_unit *fw_unit(struct device *dev)
{
return container_of(dev, struct fw_unit, device);
}
+static inline struct fw_unit *fw_unit_get(struct fw_unit *unit)
+{
+ get_device(&unit->device);
+
+ return unit;
+}
+
+static inline void fw_unit_put(struct fw_unit *unit)
+{
+ put_device(&unit->device);
+}
+
#define CSR_OFFSET 0x40
#define CSR_LEAF 0x80
#define CSR_DIRECTORY 0xc0
return ctx;
}
-EXPORT_SYMBOL(fw_iso_context_create);
void fw_iso_context_destroy(struct fw_iso_context *ctx)
{
card->driver->free_iso_context(ctx);
}
-EXPORT_SYMBOL(fw_iso_context_destroy);
int
fw_iso_context_start(struct fw_iso_context *ctx, int cycle, int sync, int tags)
{
return ctx->card->driver->start_iso(ctx, cycle, sync, tags);
}
-EXPORT_SYMBOL(fw_iso_context_start);
int
fw_iso_context_queue(struct fw_iso_context *ctx,
return card->driver->queue_iso(ctx, packet, buffer, payload);
}
-EXPORT_SYMBOL(fw_iso_context_queue);
int
fw_iso_context_stop(struct fw_iso_context *ctx)
{
return ctx->card->driver->stop_iso(ctx);
}
-EXPORT_SYMBOL(fw_iso_context_stop);
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/module.h>
+#include <linux/moduleparam.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
struct tasklet_struct bus_reset_tasklet;
int node_id;
int generation;
- int request_generation;
+ int request_generation; /* for timestamping incoming requests */
u32 bus_seconds;
bool old_uninorth;
+ bool bus_reset_packet_quirk;
/*
* Spinlock for accessing fw_ohci data. Never call out of
static char ohci_driver_name[] = KBUILD_MODNAME;
+#ifdef CONFIG_FIREWIRE_OHCI_DEBUG
+
+#define OHCI_PARAM_DEBUG_AT_AR 1
+#define OHCI_PARAM_DEBUG_SELFIDS 2
+#define OHCI_PARAM_DEBUG_IRQS 4
+#define OHCI_PARAM_DEBUG_BUSRESETS 8 /* only effective before chip init */
+
+static int param_debug;
+module_param_named(debug, param_debug, int, 0644);
+MODULE_PARM_DESC(debug, "Verbose logging (default = 0"
+ ", AT/AR events = " __stringify(OHCI_PARAM_DEBUG_AT_AR)
+ ", self-IDs = " __stringify(OHCI_PARAM_DEBUG_SELFIDS)
+ ", IRQs = " __stringify(OHCI_PARAM_DEBUG_IRQS)
+ ", busReset events = " __stringify(OHCI_PARAM_DEBUG_BUSRESETS)
+ ", or a combination, or all = -1)");
+
+static void log_irqs(u32 evt)
+{
+ if (likely(!(param_debug &
+ (OHCI_PARAM_DEBUG_IRQS | OHCI_PARAM_DEBUG_BUSRESETS))))
+ return;
+
+ if (!(param_debug & OHCI_PARAM_DEBUG_IRQS) &&
+ !(evt & OHCI1394_busReset))
+ return;
+
+ printk(KERN_DEBUG KBUILD_MODNAME ": IRQ "
+ "%08x%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
+ evt,
+ evt & OHCI1394_selfIDComplete ? " selfID" : "",
+ evt & OHCI1394_RQPkt ? " AR_req" : "",
+ evt & OHCI1394_RSPkt ? " AR_resp" : "",
+ evt & OHCI1394_reqTxComplete ? " AT_req" : "",
+ evt & OHCI1394_respTxComplete ? " AT_resp" : "",
+ evt & OHCI1394_isochRx ? " IR" : "",
+ evt & OHCI1394_isochTx ? " IT" : "",
+ evt & OHCI1394_postedWriteErr ? " postedWriteErr" : "",
+ evt & OHCI1394_cycleTooLong ? " cycleTooLong" : "",
+ evt & OHCI1394_cycle64Seconds ? " cycle64Seconds" : "",
+ evt & OHCI1394_regAccessFail ? " regAccessFail" : "",
+ evt & OHCI1394_busReset ? " busReset" : "",
+ evt & ~(OHCI1394_selfIDComplete | OHCI1394_RQPkt |
+ OHCI1394_RSPkt | OHCI1394_reqTxComplete |
+ OHCI1394_respTxComplete | OHCI1394_isochRx |
+ OHCI1394_isochTx | OHCI1394_postedWriteErr |
+ OHCI1394_cycleTooLong | OHCI1394_cycle64Seconds |
+ OHCI1394_regAccessFail | OHCI1394_busReset)
+ ? " ?" : "");
+}
+
+static const char *speed[] = {
+ [0] = "S100", [1] = "S200", [2] = "S400", [3] = "beta",
+};
+static const char *power[] = {
+ [0] = "+0W", [1] = "+15W", [2] = "+30W", [3] = "+45W",
+ [4] = "-3W", [5] = " ?W", [6] = "-3..-6W", [7] = "-3..-10W",
+};
+static const char port[] = { '.', '-', 'p', 'c', };
+
+static char _p(u32 *s, int shift)
+{
+ return port[*s >> shift & 3];
+}
+
+static void log_selfids(int node_id, int generation, int self_id_count, u32 *s)
+{
+ if (likely(!(param_debug & OHCI_PARAM_DEBUG_SELFIDS)))
+ return;
+
+ printk(KERN_DEBUG KBUILD_MODNAME ": %d selfIDs, generation %d, "
+ "local node ID %04x\n", self_id_count, generation, node_id);
+
+ for (; self_id_count--; ++s)
+ if ((*s & 1 << 23) == 0)
+ printk(KERN_DEBUG "selfID 0: %08x, phy %d [%c%c%c] "
+ "%s gc=%d %s %s%s%s\n",
+ *s, *s >> 24 & 63, _p(s, 6), _p(s, 4), _p(s, 2),
+ speed[*s >> 14 & 3], *s >> 16 & 63,
+ power[*s >> 8 & 7], *s >> 22 & 1 ? "L" : "",
+ *s >> 11 & 1 ? "c" : "", *s & 2 ? "i" : "");
+ else
+ printk(KERN_DEBUG "selfID n: %08x, phy %d "
+ "[%c%c%c%c%c%c%c%c]\n",
+ *s, *s >> 24 & 63,
+ _p(s, 16), _p(s, 14), _p(s, 12), _p(s, 10),
+ _p(s, 8), _p(s, 6), _p(s, 4), _p(s, 2));
+}
+
+static const char *evts[] = {
+ [0x00] = "evt_no_status", [0x01] = "-reserved-",
+ [0x02] = "evt_long_packet", [0x03] = "evt_missing_ack",
+ [0x04] = "evt_underrun", [0x05] = "evt_overrun",
+ [0x06] = "evt_descriptor_read", [0x07] = "evt_data_read",
+ [0x08] = "evt_data_write", [0x09] = "evt_bus_reset",
+ [0x0a] = "evt_timeout", [0x0b] = "evt_tcode_err",
+ [0x0c] = "-reserved-", [0x0d] = "-reserved-",
+ [0x0e] = "evt_unknown", [0x0f] = "evt_flushed",
+ [0x10] = "-reserved-", [0x11] = "ack_complete",
+ [0x12] = "ack_pending ", [0x13] = "-reserved-",
+ [0x14] = "ack_busy_X", [0x15] = "ack_busy_A",
+ [0x16] = "ack_busy_B", [0x17] = "-reserved-",
+ [0x18] = "-reserved-", [0x19] = "-reserved-",
+ [0x1a] = "-reserved-", [0x1b] = "ack_tardy",
+ [0x1c] = "-reserved-", [0x1d] = "ack_data_error",
+ [0x1e] = "ack_type_error", [0x1f] = "-reserved-",
+ [0x20] = "pending/cancelled",
+};
+static const char *tcodes[] = {
+ [0x0] = "QW req", [0x1] = "BW req",
+ [0x2] = "W resp", [0x3] = "-reserved-",
+ [0x4] = "QR req", [0x5] = "BR req",
+ [0x6] = "QR resp", [0x7] = "BR resp",
+ [0x8] = "cycle start", [0x9] = "Lk req",
+ [0xa] = "async stream packet", [0xb] = "Lk resp",
+ [0xc] = "-reserved-", [0xd] = "-reserved-",
+ [0xe] = "link internal", [0xf] = "-reserved-",
+};
+static const char *phys[] = {
+ [0x0] = "phy config packet", [0x1] = "link-on packet",
+ [0x2] = "self-id packet", [0x3] = "-reserved-",
+};
+
+static void log_ar_at_event(char dir, int speed, u32 *header, int evt)
+{
+ int tcode = header[0] >> 4 & 0xf;
+ char specific[12];
+
+ if (likely(!(param_debug & OHCI_PARAM_DEBUG_AT_AR)))
+ return;
+
+ if (unlikely(evt >= ARRAY_SIZE(evts)))
+ evt = 0x1f;
+
+ if (evt == OHCI1394_evt_bus_reset) {
+ printk(KERN_DEBUG "A%c evt_bus_reset, generation %d\n",
+ dir, (header[2] >> 16) & 0xff);
+ return;
+ }
+
+ if (header[0] == ~header[1]) {
+ printk(KERN_DEBUG "A%c %s, %s, %08x\n",
+ dir, evts[evt], phys[header[0] >> 30 & 0x3],
+ header[0]);
+ return;
+ }
+
+ switch (tcode) {
+ case 0x0: case 0x6: case 0x8:
+ snprintf(specific, sizeof(specific), " = %08x",
+ be32_to_cpu((__force __be32)header[3]));
+ break;
+ case 0x1: case 0x5: case 0x7: case 0x9: case 0xb:
+ snprintf(specific, sizeof(specific), " %x,%x",
+ header[3] >> 16, header[3] & 0xffff);
+ break;
+ default:
+ specific[0] = '\0';
+ }
+
+ switch (tcode) {
+ case 0xe: case 0xa:
+ printk(KERN_DEBUG "A%c %s, %s\n",
+ dir, evts[evt], tcodes[tcode]);
+ break;
+ case 0x0: case 0x1: case 0x4: case 0x5: case 0x9:
+ printk(KERN_DEBUG "A%c spd %x tl %02x, "
+ "%04x -> %04x, %s, "
+ "%s, %04x%08x%s\n",
+ dir, speed, header[0] >> 10 & 0x3f,
+ header[1] >> 16, header[0] >> 16, evts[evt],
+ tcodes[tcode], header[1] & 0xffff, header[2], specific);
+ break;
+ default:
+ printk(KERN_DEBUG "A%c spd %x tl %02x, "
+ "%04x -> %04x, %s, "
+ "%s%s\n",
+ dir, speed, header[0] >> 10 & 0x3f,
+ header[1] >> 16, header[0] >> 16, evts[evt],
+ tcodes[tcode], specific);
+ }
+}
+
+#else
+
+#define log_irqs(evt)
+#define log_selfids(node_id, generation, self_id_count, sid)
+#define log_ar_at_event(dir, speed, header, evt)
+
+#endif /* CONFIG_FIREWIRE_OHCI_DEBUG */
+
static inline void reg_write(const struct fw_ohci *ohci, int offset, u32 data)
{
writel(data, ohci->registers + offset);
struct fw_ohci *ohci = ctx->ohci;
struct fw_packet p;
u32 status, length, tcode;
+ int evt;
p.header[0] = cond_le32_to_cpu(buffer[0]);
p.header[1] = cond_le32_to_cpu(buffer[1]);
/* FIXME: What to do about evt_* errors? */
length = (p.header_length + p.payload_length + 3) / 4;
status = cond_le32_to_cpu(buffer[length]);
+ evt = (status >> 16) & 0x1f;
- p.ack = ((status >> 16) & 0x1f) - 16;
+ p.ack = evt - 16;
p.speed = (status >> 21) & 0x7;
p.timestamp = status & 0xffff;
p.generation = ohci->request_generation;
+ log_ar_at_event('R', p.speed, p.header, evt);
+
/*
* The OHCI bus reset handler synthesizes a phy packet with
* the new generation number when a bus reset happens (see
* generation. We only need this for requests; for responses
* we use the unique tlabel for finding the matching
* request.
+ *
+ * Alas some chips sometimes emit bus reset packets with a
+ * wrong generation. We set the correct generation for these
+ * at a slightly incorrect time (in bus_reset_tasklet).
*/
-
- if (p.ack + 16 == 0x09)
- ohci->request_generation = (p.header[2] >> 16) & 0xff;
- else if (ctx == &ohci->ar_request_ctx)
+ if (evt == OHCI1394_evt_bus_reset) {
+ if (!ohci->bus_reset_packet_quirk)
+ ohci->request_generation = (p.header[2] >> 16) & 0xff;
+ } else if (ctx == &ohci->ar_request_ctx) {
fw_core_handle_request(&ohci->card, &p);
- else
+ } else {
fw_core_handle_response(&ohci->card, &p);
+ }
return buffer + length + 1;
}
DESCRIPTOR_IRQ_ALWAYS |
DESCRIPTOR_BRANCH_ALWAYS);
- /* FIXME: Document how the locking works. */
- if (ohci->generation != packet->generation) {
+ /*
+ * If the controller and packet generations don't match, we need to
+ * bail out and try again. If IntEvent.busReset is set, the AT context
+ * is halted, so appending to the context and trying to run it is
+ * futile. Most controllers do the right thing and just flush the AT
+ * queue (per section 7.2.3.2 of the OHCI 1.1 specification), but
+ * some controllers (like a JMicron JMB381 PCI-e) misbehave and wind
+ * up stalling out. So we just bail out in software and try again
+ * later, and everyone is happy.
+ * FIXME: Document how the locking works.
+ */
+ if (ohci->generation != packet->generation ||
+ reg_read(ohci, OHCI1394_IntEventSet) & OHCI1394_busReset) {
if (packet->payload_length > 0)
dma_unmap_single(ohci->card.device, payload_bus,
packet->payload_length, DMA_TO_DEVICE);
evt = le16_to_cpu(last->transfer_status) & 0x1f;
packet->timestamp = le16_to_cpu(last->res_count);
+ log_ar_at_event('T', packet->speed, packet->header, evt);
+
switch (evt) {
case OHCI1394_evt_timeout:
/* Async response transmit timed out. */
ohci->node_id = reg & (OHCI1394_NodeID_busNumber |
OHCI1394_NodeID_nodeNumber);
+ reg = reg_read(ohci, OHCI1394_SelfIDCount);
+ if (reg & OHCI1394_SelfIDCount_selfIDError) {
+ fw_notify("inconsistent self IDs\n");
+ return;
+ }
/*
* The count in the SelfIDCount register is the number of
* bytes in the self ID receive buffer. Since we also receive
* the inverted quadlets and a header quadlet, we shift one
* bit extra to get the actual number of self IDs.
*/
-
- self_id_count = (reg_read(ohci, OHCI1394_SelfIDCount) >> 3) & 0x3ff;
+ self_id_count = (reg >> 3) & 0x3ff;
+ if (self_id_count == 0) {
+ fw_notify("inconsistent self IDs\n");
+ return;
+ }
generation = (cond_le32_to_cpu(ohci->self_id_cpu[0]) >> 16) & 0xff;
rmb();
for (i = 1, j = 0; j < self_id_count; i += 2, j++) {
- if (ohci->self_id_cpu[i] != ~ohci->self_id_cpu[i + 1])
- fw_error("inconsistent self IDs\n");
+ if (ohci->self_id_cpu[i] != ~ohci->self_id_cpu[i + 1]) {
+ fw_notify("inconsistent self IDs\n");
+ return;
+ }
ohci->self_id_buffer[j] =
cond_le32_to_cpu(ohci->self_id_cpu[i]);
}
context_stop(&ohci->at_response_ctx);
reg_write(ohci, OHCI1394_IntEventClear, OHCI1394_busReset);
+ if (ohci->bus_reset_packet_quirk)
+ ohci->request_generation = generation;
+
/*
* This next bit is unrelated to the AT context stuff but we
* have to do it under the spinlock also. If a new config rom
reg_write(ohci, OHCI1394_ConfigROMhdr, ohci->next_header);
}
+#ifdef CONFIG_FIREWIRE_OHCI_REMOTE_DMA
+ reg_write(ohci, OHCI1394_PhyReqFilterHiSet, ~0);
+ reg_write(ohci, OHCI1394_PhyReqFilterLoSet, ~0);
+#endif
+
spin_unlock_irqrestore(&ohci->lock, flags);
if (free_rom)
dma_free_coherent(ohci->card.device, CONFIG_ROM_SIZE,
free_rom, free_rom_bus);
+ log_selfids(ohci->node_id, generation,
+ self_id_count, ohci->self_id_buffer);
+
fw_core_handle_bus_reset(&ohci->card, ohci->node_id, generation,
self_id_count, ohci->self_id_buffer);
}
if (!event || !~event)
return IRQ_NONE;
- reg_write(ohci, OHCI1394_IntEventClear, event);
+ /* busReset must not be cleared yet, see OHCI 1.1 clause 7.2.3.2 */
+ reg_write(ohci, OHCI1394_IntEventClear, event & ~OHCI1394_busReset);
+ log_irqs(event);
if (event & OHCI1394_selfIDComplete)
tasklet_schedule(&ohci->bus_reset_tasklet);
iso_event &= ~(1 << i);
}
+ if (unlikely(event & OHCI1394_regAccessFail))
+ fw_error("Register access failure - "
+ "please notify linux1394-devel@lists.sf.net\n");
+
if (unlikely(event & OHCI1394_postedWriteErr))
fw_error("PCI posted write error\n");
{
struct fw_ohci *ohci = fw_ohci(card);
struct pci_dev *dev = to_pci_dev(card->device);
+ u32 lps;
+ int i;
if (software_reset(ohci)) {
fw_error("Failed to reset ohci card.\n");
* most of the registers. In fact, on some cards (ALI M5251),
* accessing registers in the SClk domain without LPS enabled
* will lock up the machine. Wait 50msec to make sure we have
- * full link enabled.
+ * full link enabled. However, with some cards (well, at least
+ * a JMicron PCIe card), we have to try again sometimes.
*/
reg_write(ohci, OHCI1394_HCControlSet,
OHCI1394_HCControl_LPS |
OHCI1394_HCControl_postedWriteEnable);
flush_writes(ohci);
- msleep(50);
+
+ for (lps = 0, i = 0; !lps && i < 3; i++) {
+ msleep(50);
+ lps = reg_read(ohci, OHCI1394_HCControlSet) &
+ OHCI1394_HCControl_LPS;
+ }
+
+ if (!lps) {
+ fw_error("Failed to set Link Power Status\n");
+ return -EIO;
+ }
reg_write(ohci, OHCI1394_HCControlClear,
OHCI1394_HCControl_noByteSwapData);
OHCI1394_reqTxComplete | OHCI1394_respTxComplete |
OHCI1394_isochRx | OHCI1394_isochTx |
OHCI1394_postedWriteErr | OHCI1394_cycleTooLong |
- OHCI1394_cycle64Seconds | OHCI1394_masterIntEnable);
+ OHCI1394_cycle64Seconds | OHCI1394_regAccessFail |
+ OHCI1394_masterIntEnable);
+ if (param_debug & OHCI_PARAM_DEBUG_BUSRESETS)
+ reg_write(ohci, OHCI1394_IntMaskSet, OHCI1394_busReset);
/* Activate link_on bit and contender bit in our self ID packets.*/
if (ohci_update_phy_reg(card, 4, 0,
if (packet->ack != 0)
goto out;
+ log_ar_at_event('T', packet->speed, packet->header, 0x20);
driver_data->packet = NULL;
packet->ack = RCODE_CANCELLED;
packet->callback(packet, &ohci->card, packet->ack);
static int
ohci_enable_phys_dma(struct fw_card *card, int node_id, int generation)
{
+#ifdef CONFIG_FIREWIRE_OHCI_REMOTE_DMA
+ return 0;
+#else
struct fw_ohci *ohci = fw_ohci(card);
unsigned long flags;
int n, retval = 0;
out:
spin_unlock_irqrestore(&ohci->lock, flags);
return retval;
+#endif /* CONFIG_FIREWIRE_OHCI_REMOTE_DMA */
}
static u64
.stop_iso = ohci_stop_iso,
};
-static int __devinit
-pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
-{
- struct fw_ohci *ohci;
- u32 bus_options, max_receive, link_speed;
- u64 guid;
- int err;
- size_t size;
-
#ifdef CONFIG_PPC_PMAC
- /* Necessary on some machines if fw-ohci was loaded/ unloaded before */
+static void ohci_pmac_on(struct pci_dev *dev)
+{
if (machine_is(powermac)) {
struct device_node *ofn = pci_device_to_OF_node(dev);
pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 1);
}
}
+}
+
+static void ohci_pmac_off(struct pci_dev *dev)
+{
+ if (machine_is(powermac)) {
+ struct device_node *ofn = pci_device_to_OF_node(dev);
+
+ if (ofn) {
+ pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 0);
+ pmac_call_feature(PMAC_FTR_1394_CABLE_POWER, ofn, 0, 0);
+ }
+ }
+}
+#else
+#define ohci_pmac_on(dev)
+#define ohci_pmac_off(dev)
#endif /* CONFIG_PPC_PMAC */
+static int __devinit
+pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
+{
+ struct fw_ohci *ohci;
+ u32 bus_options, max_receive, link_speed;
+ u64 guid;
+ int err;
+ size_t size;
+
ohci = kzalloc(sizeof(*ohci), GFP_KERNEL);
if (ohci == NULL) {
fw_error("Could not malloc fw_ohci data.\n");
fw_card_initialize(&ohci->card, &ohci_driver, &dev->dev);
+ ohci_pmac_on(dev);
+
err = pci_enable_device(dev);
if (err) {
fw_error("Failed to enable OHCI hardware.\n");
- goto fail_put_card;
+ goto fail_free;
}
pci_set_master(dev);
ohci->old_uninorth = dev->vendor == PCI_VENDOR_ID_APPLE &&
dev->device == PCI_DEVICE_ID_APPLE_UNI_N_FW;
#endif
+ ohci->bus_reset_packet_quirk = dev->vendor == PCI_VENDOR_ID_TI;
+
spin_lock_init(&ohci->lock);
tasklet_init(&ohci->bus_reset_tasklet,
pci_release_region(dev, 0);
fail_disable:
pci_disable_device(dev);
- fail_put_card:
- fw_card_put(&ohci->card);
+ fail_free:
+ kfree(&ohci->card);
+ ohci_pmac_off(dev);
return err;
}
pci_iounmap(dev, ohci->registers);
pci_release_region(dev, 0);
pci_disable_device(dev);
- fw_card_put(&ohci->card);
-
-#ifdef CONFIG_PPC_PMAC
- /* On UniNorth, power down the cable and turn off the chip clock
- * to save power on laptops */
- if (machine_is(powermac)) {
- struct device_node *ofn = pci_device_to_OF_node(dev);
-
- if (ofn) {
- pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 0);
- pmac_call_feature(PMAC_FTR_1394_CABLE_POWER, ofn, 0, 0);
- }
- }
-#endif /* CONFIG_PPC_PMAC */
+ kfree(&ohci->card);
+ ohci_pmac_off(dev);
fw_notify("Removed fw-ohci device.\n");
}
#ifdef CONFIG_PM
-static int pci_suspend(struct pci_dev *pdev, pm_message_t state)
+static int pci_suspend(struct pci_dev *dev, pm_message_t state)
{
- struct fw_ohci *ohci = pci_get_drvdata(pdev);
+ struct fw_ohci *ohci = pci_get_drvdata(dev);
int err;
software_reset(ohci);
- free_irq(pdev->irq, ohci);
- err = pci_save_state(pdev);
+ free_irq(dev->irq, ohci);
+ err = pci_save_state(dev);
if (err) {
fw_error("pci_save_state failed\n");
return err;
}
- err = pci_set_power_state(pdev, pci_choose_state(pdev, state));
+ err = pci_set_power_state(dev, pci_choose_state(dev, state));
if (err)
fw_error("pci_set_power_state failed with %d\n", err);
-
-/* PowerMac suspend code comes last */
-#ifdef CONFIG_PPC_PMAC
- if (machine_is(powermac)) {
- struct device_node *ofn = pci_device_to_OF_node(pdev);
-
- if (ofn)
- pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 0);
- }
-#endif /* CONFIG_PPC_PMAC */
+ ohci_pmac_off(dev);
return 0;
}
-static int pci_resume(struct pci_dev *pdev)
+static int pci_resume(struct pci_dev *dev)
{
- struct fw_ohci *ohci = pci_get_drvdata(pdev);
+ struct fw_ohci *ohci = pci_get_drvdata(dev);
int err;
-/* PowerMac resume code comes first */
-#ifdef CONFIG_PPC_PMAC
- if (machine_is(powermac)) {
- struct device_node *ofn = pci_device_to_OF_node(pdev);
-
- if (ofn)
- pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 1);
- }
-#endif /* CONFIG_PPC_PMAC */
-
- pci_set_power_state(pdev, PCI_D0);
- pci_restore_state(pdev);
- err = pci_enable_device(pdev);
+ ohci_pmac_on(dev);
+ pci_set_power_state(dev, PCI_D0);
+ pci_restore_state(dev);
+ err = pci_enable_device(dev);
if (err) {
fw_error("pci_enable_device failed\n");
return err;
#define OHCI1394_HCControl_softReset 0x00010000
#define OHCI1394_SelfIDBuffer 0x064
#define OHCI1394_SelfIDCount 0x068
+#define OHCI1394_SelfIDCount_selfIDError 0x80000000
#define OHCI1394_IRMultiChanMaskHiSet 0x070
#define OHCI1394_IRMultiChanMaskHiClear 0x074
#define OHCI1394_IRMultiChanMaskLoSet 0x078
#define OHCI1394_lockRespErr 0x00000200
#define OHCI1394_selfIDComplete 0x00010000
#define OHCI1394_busReset 0x00020000
+#define OHCI1394_regAccessFail 0x00040000
#define OHCI1394_phy 0x00080000
#define OHCI1394_cycleSynch 0x00100000
#define OHCI1394_cycle64Seconds 0x00200000
struct list_head lu_list;
u64 management_agent_address;
+ u64 guid;
int directory_id;
int node_id;
int address_high;
#define SBP2_ORB_TIMEOUT 2000U /* Timeout in ms */
#define SBP2_ORB_NULL 0x80000000
#define SBP2_MAX_SG_ELEMENT_LENGTH 0xf000
-#define SBP2_RETRY_LIMIT 0xf /* 15 retries */
-
-#define SBP2_DIRECTION_TO_MEDIA 0x0
-#define SBP2_DIRECTION_FROM_MEDIA 0x1
+#define SBP2_RETRY_LIMIT 0xf /* 15 retries */
+#define SBP2_CYCLE_LIMIT (0xc8 << 12) /* 200 125us cycles */
/* Unit directory keys */
#define SBP2_CSR_UNIT_CHARACTERISTICS 0x3a
};
struct sbp2_pointer {
- u32 high;
- u32 low;
+ __be32 high;
+ __be32 low;
};
struct sbp2_orb {
struct {
struct sbp2_pointer password;
struct sbp2_pointer response;
- u32 misc;
- u32 length;
+ __be32 misc;
+ __be32 length;
struct sbp2_pointer status_fifo;
} request;
__be32 response[4];
struct sbp2_status status;
};
-#define LOGIN_RESPONSE_GET_LOGIN_ID(v) ((v).misc & 0xffff)
-#define LOGIN_RESPONSE_GET_LENGTH(v) (((v).misc >> 16) & 0xffff)
-
struct sbp2_login_response {
- u32 misc;
+ __be32 misc;
struct sbp2_pointer command_block_agent;
- u32 reconnect_hold;
+ __be32 reconnect_hold;
};
#define COMMAND_ORB_DATA_SIZE(v) ((v))
#define COMMAND_ORB_PAGE_SIZE(v) ((v) << 16)
#define COMMAND_ORB_PAGE_TABLE_PRESENT ((1) << 19)
#define COMMAND_ORB_MAX_PAYLOAD(v) ((v) << 20)
#define COMMAND_ORB_SPEED(v) ((v) << 24)
-#define COMMAND_ORB_DIRECTION(v) ((v) << 27)
+#define COMMAND_ORB_DIRECTION ((1) << 27)
#define COMMAND_ORB_REQUEST_FORMAT(v) ((v) << 29)
#define COMMAND_ORB_NOTIFY ((1) << 31)
struct {
struct sbp2_pointer next;
struct sbp2_pointer data_descriptor;
- u32 misc;
+ __be32 misc;
u8 command_block[12];
} request;
struct scsi_cmnd *cmd;
unsigned long flags;
orb->pointer.high = 0;
- orb->pointer.low = orb->request_bus;
- fw_memcpy_to_be32(&orb->pointer, &orb->pointer, sizeof(orb->pointer));
+ orb->pointer.low = cpu_to_be32(orb->request_bus);
spin_lock_irqsave(&device->card->lock, flags);
list_add_tail(&orb->link, &lu->orb_list);
if (dma_mapping_error(orb->response_bus))
goto fail_mapping_response;
- orb->request.response.high = 0;
- orb->request.response.low = orb->response_bus;
+ orb->request.response.high = 0;
+ orb->request.response.low = cpu_to_be32(orb->response_bus);
- orb->request.misc =
+ orb->request.misc = cpu_to_be32(
MANAGEMENT_ORB_NOTIFY |
MANAGEMENT_ORB_FUNCTION(function) |
- MANAGEMENT_ORB_LUN(lun_or_login_id);
- orb->request.length =
- MANAGEMENT_ORB_RESPONSE_LENGTH(sizeof(orb->response));
+ MANAGEMENT_ORB_LUN(lun_or_login_id));
+ orb->request.length = cpu_to_be32(
+ MANAGEMENT_ORB_RESPONSE_LENGTH(sizeof(orb->response)));
- orb->request.status_fifo.high = lu->address_handler.offset >> 32;
- orb->request.status_fifo.low = lu->address_handler.offset;
+ orb->request.status_fifo.high =
+ cpu_to_be32(lu->address_handler.offset >> 32);
+ orb->request.status_fifo.low =
+ cpu_to_be32(lu->address_handler.offset);
if (function == SBP2_LOGIN_REQUEST) {
/* Ask for 2^2 == 4 seconds reconnect grace period */
- orb->request.misc |=
+ orb->request.misc |= cpu_to_be32(
MANAGEMENT_ORB_RECONNECT(2) |
- MANAGEMENT_ORB_EXCLUSIVE(sbp2_param_exclusive_login);
+ MANAGEMENT_ORB_EXCLUSIVE(sbp2_param_exclusive_login));
timeout = lu->tgt->mgt_orb_timeout;
} else {
timeout = SBP2_ORB_TIMEOUT;
}
- fw_memcpy_to_be32(&orb->request, &orb->request, sizeof(orb->request));
-
init_completion(&orb->done);
orb->base.callback = complete_management_orb;
sizeof(orb->response), DMA_FROM_DEVICE);
fail_mapping_response:
if (response)
- fw_memcpy_from_be32(response,
- orb->response, sizeof(orb->response));
+ memcpy(response, orb->response, sizeof(orb->response));
kref_put(&orb->base.kref, free_orb);
return retval;
if (!tgt->dont_block && !lu->blocked &&
lu->generation != card->generation) {
lu->blocked = true;
- if (++tgt->blocked == 1) {
+ if (++tgt->blocked == 1)
scsi_block_requests(shost);
- fw_notify("blocked %s\n", lu->tgt->bus_id);
- }
}
spin_unlock_irqrestore(&card->lock, flags);
}
}
spin_unlock_irqrestore(&card->lock, flags);
- if (unblock) {
+ if (unblock)
scsi_unblock_requests(shost);
- fw_notify("unblocked %s\n", lu->tgt->bus_id);
- }
}
/*
scsi_remove_host(shost);
fw_notify("released %s\n", tgt->bus_id);
- put_device(&tgt->unit->device);
+ fw_unit_put(tgt->unit);
scsi_host_put(shost);
fw_device_put(device);
}
complete(done);
}
+/*
+ * Write retransmit retry values into the BUSY_TIMEOUT register.
+ * - The single-phase retry protocol is supported by all SBP-2 devices, but the
+ * default retry_limit value is 0 (i.e. never retry transmission). We write a
+ * saner value after logging into the device.
+ * - The dual-phase retry protocol is optional to implement, and if not
+ * supported, writes to the dual-phase portion of the register will be
+ * ignored. We try to write the original 1394-1995 default here.
+ * - In the case of devices that are also SBP-3-compliant, all writes are
+ * ignored, as the register is read-only, but contains single-phase retry of
+ * 15, which is what we're trying to set for all SBP-2 device anyway, so this
+ * write attempt is safe and yields more consistent behavior for all devices.
+ *
+ * See section 8.3.2.3.5 of the 1394-1995 spec, section 6.2 of the SBP-2 spec,
+ * and section 6.4 of the SBP-3 spec for further details.
+ */
static void sbp2_set_busy_timeout(struct sbp2_logical_unit *lu)
{
struct fw_device *device = fw_device(lu->tgt->unit->device.parent);
struct fw_transaction t;
static __be32 busy_timeout;
- /* FIXME: we should try to set dual-phase cycle_limit too */
- busy_timeout = cpu_to_be32(SBP2_RETRY_LIMIT);
+ busy_timeout = cpu_to_be32(SBP2_CYCLE_LIMIT | SBP2_RETRY_LIMIT);
fw_send_request(device->card, &t, TCODE_WRITE_QUADLET_REQUEST,
lu->tgt->node_id, lu->generation, device->max_speed,
tgt->address_high = local_node_id << 16;
sbp2_set_generation(lu, generation);
- /* Get command block agent offset and login id. */
lu->command_block_agent_address =
- ((u64) (response.command_block_agent.high & 0xffff) << 32) |
- response.command_block_agent.low;
- lu->login_id = LOGIN_RESPONSE_GET_LOGIN_ID(response);
+ ((u64)(be32_to_cpu(response.command_block_agent.high) & 0xffff)
+ << 32) | be32_to_cpu(response.command_block_agent.low);
+ lu->login_id = be32_to_cpu(response.misc) & 0xffff;
fw_notify("%s: logged in to LUN %04x (%d retries)\n",
tgt->bus_id, lu->lun, lu->retries);
kref_init(&tgt->kref);
INIT_LIST_HEAD(&tgt->lu_list);
tgt->bus_id = unit->device.bus_id;
+ tgt->guid = (u64)device->config_rom[3] << 32 | device->config_rom[4];
if (fw_device_enable_phys_dma(device) < 0)
goto fail_shost_put;
goto fail_shost_put;
fw_device_get(device);
+ fw_unit_get(unit);
/* Initialize to values that won't match anything in our table. */
firmware_revision = 0xff000000;
sbp2_init_workarounds(tgt, model, firmware_revision);
- get_device(&unit->device);
-
/* Do the login in a workqueue so we can easily reschedule retries. */
list_for_each_entry(lu, &tgt->lu_list, link)
sbp2_queue_work(lu, 0);
* tables.
*/
if (count == 1 && sg_dma_len(sg) < SBP2_MAX_SG_ELEMENT_LENGTH) {
- orb->request.data_descriptor.high = lu->tgt->address_high;
- orb->request.data_descriptor.low = sg_dma_address(sg);
- orb->request.misc |= COMMAND_ORB_DATA_SIZE(sg_dma_len(sg));
+ orb->request.data_descriptor.high =
+ cpu_to_be32(lu->tgt->address_high);
+ orb->request.data_descriptor.low =
+ cpu_to_be32(sg_dma_address(sg));
+ orb->request.misc |=
+ cpu_to_be32(COMMAND_ORB_DATA_SIZE(sg_dma_len(sg)));
return 0;
}
goto fail_page_table;
}
l = min(sg_len, SBP2_MAX_SG_ELEMENT_LENGTH);
- orb->page_table[j].low = sg_addr;
- orb->page_table[j].high = (l << 16);
+ orb->page_table[j].low = cpu_to_be32(sg_addr);
+ orb->page_table[j].high = cpu_to_be32(l << 16);
sg_addr += l;
sg_len -= l;
j++;
}
}
- fw_memcpy_to_be32(orb->page_table, orb->page_table,
- sizeof(orb->page_table[0]) * j);
orb->page_table_bus =
dma_map_single(device->card->device, orb->page_table,
sizeof(orb->page_table), DMA_TO_DEVICE);
* initiator (i.e. us), but data_descriptor can refer to data
* on other nodes so we need to put our ID in descriptor.high.
*/
- orb->request.data_descriptor.high = lu->tgt->address_high;
- orb->request.data_descriptor.low = orb->page_table_bus;
- orb->request.misc |=
- COMMAND_ORB_PAGE_TABLE_PRESENT |
- COMMAND_ORB_DATA_SIZE(j);
+ orb->request.data_descriptor.high = cpu_to_be32(lu->tgt->address_high);
+ orb->request.data_descriptor.low = cpu_to_be32(orb->page_table_bus);
+ orb->request.misc |= cpu_to_be32(COMMAND_ORB_PAGE_TABLE_PRESENT |
+ COMMAND_ORB_DATA_SIZE(j));
return 0;
orb->done = done;
orb->cmd = cmd;
- orb->request.next.high = SBP2_ORB_NULL;
- orb->request.next.low = 0x0;
+ orb->request.next.high = cpu_to_be32(SBP2_ORB_NULL);
/*
* At speed 100 we can do 512 bytes per packet, at speed 200,
* 1024 bytes per packet etc. The SBP-2 max_payload field
*/
max_payload = min(device->max_speed + 7,
device->card->max_receive - 1);
- orb->request.misc =
+ orb->request.misc = cpu_to_be32(
COMMAND_ORB_MAX_PAYLOAD(max_payload) |
COMMAND_ORB_SPEED(device->max_speed) |
- COMMAND_ORB_NOTIFY;
+ COMMAND_ORB_NOTIFY);
if (cmd->sc_data_direction == DMA_FROM_DEVICE)
- orb->request.misc |=
- COMMAND_ORB_DIRECTION(SBP2_DIRECTION_FROM_MEDIA);
- else if (cmd->sc_data_direction == DMA_TO_DEVICE)
- orb->request.misc |=
- COMMAND_ORB_DIRECTION(SBP2_DIRECTION_TO_MEDIA);
+ orb->request.misc |= cpu_to_be32(COMMAND_ORB_DIRECTION);
if (scsi_sg_count(cmd) && sbp2_map_scatterlist(orb, device, lu) < 0)
goto out;
- fw_memcpy_to_be32(&orb->request, &orb->request, sizeof(orb->request));
-
- memset(orb->request.command_block,
- 0, sizeof(orb->request.command_block));
memcpy(orb->request.command_block, cmd->cmnd, COMMAND_SIZE(*cmd->cmnd));
orb->base.callback = complete_command_orb;
sdev->allow_restart = 1;
- /*
- * Update the dma alignment (minimum alignment requirements for
- * start and end of DMA transfers) to be a sector
- */
- blk_queue_update_dma_alignment(sdev->request_queue, 511);
+ /* SBP-2 requires quadlet alignment of the data buffers. */
+ blk_queue_update_dma_alignment(sdev->request_queue, 4 - 1);
if (lu->tgt->workarounds & SBP2_WORKAROUND_INQUIRY_36)
sdev->inquiry_len = 36;
{
struct scsi_device *sdev = to_scsi_device(dev);
struct sbp2_logical_unit *lu;
- struct fw_device *device;
if (!sdev)
return 0;
lu = sdev->hostdata;
- device = fw_device(lu->tgt->unit->device.parent);
- return sprintf(buf, "%08x%08x:%06x:%04x\n",
- device->config_rom[3], device->config_rom[4],
+ return sprintf(buf, "%016llx:%06x:%04x\n",
+ (unsigned long long)lu->tgt->guid,
lu->tgt->directory_id, lu->lun);
}
node->node_id = LOCAL_BUS | SELF_ID_PHY_ID(sid);
node->link_on = SELF_ID_LINK_ON(sid);
node->phy_speed = SELF_ID_PHY_SPEED(sid);
+ node->initiated_reset = SELF_ID_PHY_INITIATOR(sid);
node->port_count = port_count;
atomic_set(&node->ref_count, 1);
beta_repeaters_present = true;
/*
- * If all PHYs does not report the same gap count
- * setting, we fall back to 63 which will force a gap
- * count reconfiguration and a reset.
+ * If PHYs report different gap counts, set an invalid count
+ * which will force a gap count reconfiguration and a reset.
*/
if (SELF_ID_GAP_COUNT(q) != gap_count)
- gap_count = 63;
+ gap_count = 0;
update_hop_count(node);
event = FW_NODE_LINK_OFF;
else if (!node0->link_on && node1->link_on)
event = FW_NODE_LINK_ON;
+ else if (node1->initiated_reset && node1->link_on)
+ event = FW_NODE_INITIATED_RESET;
else
event = FW_NODE_UPDATED;
#define __fw_topology_h
enum {
- FW_NODE_CREATED = 0x00,
- FW_NODE_UPDATED = 0x01,
- FW_NODE_DESTROYED = 0x02,
- FW_NODE_LINK_ON = 0x03,
- FW_NODE_LINK_OFF = 0x04,
+ FW_NODE_CREATED,
+ FW_NODE_UPDATED,
+ FW_NODE_DESTROYED,
+ FW_NODE_LINK_ON,
+ FW_NODE_LINK_OFF,
+ FW_NODE_INITIATED_RESET,
};
struct fw_node {
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
+#include <linux/completion.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
}
EXPORT_SYMBOL(fw_send_request);
+struct fw_phy_packet {
+ struct fw_packet packet;
+ struct completion done;
+};
+
static void
transmit_phy_packet_callback(struct fw_packet *packet,
struct fw_card *card, int status)
{
- kfree(packet);
-}
-
-static void send_phy_packet(struct fw_card *card, u32 data, int generation)
-{
- struct fw_packet *packet;
-
- packet = kzalloc(sizeof(*packet), GFP_ATOMIC);
- if (packet == NULL)
- return;
-
- packet->header[0] = data;
- packet->header[1] = ~data;
- packet->header_length = 8;
- packet->payload_length = 0;
- packet->speed = SCODE_100;
- packet->generation = generation;
- packet->callback = transmit_phy_packet_callback;
+ struct fw_phy_packet *p =
+ container_of(packet, struct fw_phy_packet, packet);
- card->driver->send_request(card, packet);
+ complete(&p->done);
}
void fw_send_phy_config(struct fw_card *card,
int node_id, int generation, int gap_count)
{
- u32 q;
-
- q = PHY_IDENTIFIER(PHY_PACKET_CONFIG) |
- PHY_CONFIG_ROOT_ID(node_id) |
- PHY_CONFIG_GAP_COUNT(gap_count);
-
- send_phy_packet(card, q, generation);
+ struct fw_phy_packet p;
+ u32 data = PHY_IDENTIFIER(PHY_PACKET_CONFIG) |
+ PHY_CONFIG_ROOT_ID(node_id) |
+ PHY_CONFIG_GAP_COUNT(gap_count);
+
+ p.packet.header[0] = data;
+ p.packet.header[1] = ~data;
+ p.packet.header_length = 8;
+ p.packet.payload_length = 0;
+ p.packet.speed = SCODE_100;
+ p.packet.generation = generation;
+ p.packet.callback = transmit_phy_packet_callback;
+ init_completion(&p.done);
+
+ card->driver->send_request(card, &p.packet);
+ wait_for_completion(&p.done);
}
void fw_flush_transactions(struct fw_card *card)
static DEFINE_SPINLOCK(address_handler_lock);
static LIST_HEAD(address_handler_list);
-const struct fw_address_region fw_low_memory_region =
- { .start = 0x000000000000ULL, .end = 0x000100000000ULL, };
const struct fw_address_region fw_high_memory_region =
{ .start = 0x000100000000ULL, .end = 0xffffe0000000ULL, };
+EXPORT_SYMBOL(fw_high_memory_region);
+
+#if 0
+const struct fw_address_region fw_low_memory_region =
+ { .start = 0x000000000000ULL, .end = 0x000100000000ULL, };
const struct fw_address_region fw_private_region =
{ .start = 0xffffe0000000ULL, .end = 0xfffff0000000ULL, };
const struct fw_address_region fw_csr_region =
- { .start = 0xfffff0000000ULL, .end = 0xfffff0000800ULL, };
+ { .start = CSR_REGISTER_BASE,
+ .end = CSR_REGISTER_BASE | CSR_CONFIG_ROM_END, };
const struct fw_address_region fw_unit_space_region =
{ .start = 0xfffff0000900ULL, .end = 0x1000000000000ULL, };
-EXPORT_SYMBOL(fw_low_memory_region);
-EXPORT_SYMBOL(fw_high_memory_region);
-EXPORT_SYMBOL(fw_private_region);
-EXPORT_SYMBOL(fw_csr_region);
-EXPORT_SYMBOL(fw_unit_space_region);
+#endif /* 0 */
/**
* Allocate a range of addresses in the node space of the OHCI
EXPORT_SYMBOL(fw_core_handle_response);
static const struct fw_address_region topology_map_region =
- { .start = 0xfffff0001000ull, .end = 0xfffff0001400ull, };
+ { .start = CSR_REGISTER_BASE | CSR_TOPOLOGY_MAP,
+ .end = CSR_REGISTER_BASE | CSR_TOPOLOGY_MAP_END, };
static void
handle_topology_map(struct fw_card *card, struct fw_request *request,
};
static const struct fw_address_region registers_region =
- { .start = 0xfffff0000000ull, .end = 0xfffff0000400ull, };
+ { .start = CSR_REGISTER_BASE,
+ .end = CSR_REGISTER_BASE | CSR_CONFIG_ROM, };
static void
handle_registers(struct fw_card *card, struct fw_request *request,
unsigned long long offset,
void *payload, size_t length, void *callback_data)
{
- int reg = offset - CSR_REGISTER_BASE;
+ int reg = offset & ~CSR_REGISTER_BASE;
unsigned long long bus_time;
__be32 *data = payload;
u64 end;
};
-extern const struct fw_address_region fw_low_memory_region;
extern const struct fw_address_region fw_high_memory_region;
-extern const struct fw_address_region fw_private_region;
-extern const struct fw_address_region fw_csr_region;
-extern const struct fw_address_region fw_unit_space_region;
int fw_core_add_address_handler(struct fw_address_handler *handler,
const struct fw_address_region *region);
const struct fw_card_driver *driver;
struct device *device;
atomic_t device_count;
- struct kref kref;
int node_id;
int generation;
- /* This is the generation used for timestamping incoming requests. */
- int request_generation;
int current_tlabel, tlabel_mask;
struct list_head transaction_list;
struct timer_list flush_timer;
int bm_generation;
};
-struct fw_card *fw_card_get(struct fw_card *card);
-void fw_card_put(struct fw_card *card);
-
/*
* The iso packet format allows for an immediate header/payload part
* stored in 'header' immediately after the packet info plus an
host->csr.state &= ~0x100;
}
- host->csr.topology_map[1] =
- cpu_to_be32(be32_to_cpu(host->csr.topology_map[1]) + 1);
+ be32_add_cpu(&host->csr.topology_map[1], 1);
host->csr.topology_map[2] = cpu_to_be32(host->node_count << 16
| host->selfid_count);
host->csr.topology_map[0] =
| csr_crc16(host->csr.topology_map + 1,
host->selfid_count + 2));
- host->csr.speed_map[1] =
- cpu_to_be32(be32_to_cpu(host->csr.speed_map[1]) + 1);
+ be32_add_cpu(&host->csr.speed_map[1], 1);
host->csr.speed_map[0] = cpu_to_be32(0x3f1 << 16
| csr_crc16(host->csr.speed_map+1,
0x3f1));
MODULE_DEVICE_TABLE(ieee1394, dv1394_id_table);
static struct hpsb_protocol_driver dv1394_driver = {
- .name = "dv1394",
- .id_table = dv1394_id_table,
+ .name = "dv1394",
};
cdev_init(&dv1394_cdev, &dv1394_fops);
dv1394_cdev.owner = THIS_MODULE;
- kobject_set_name(&dv1394_cdev.kobj, "dv1394");
ret = cdev_add(&dv1394_cdev, IEEE1394_DV1394_DEV, 16);
if (ret) {
printk(KERN_ERR "dv1394: unable to register character device\n");
if ((alignment & 3) || (alignment > 0x800000000000ULL) ||
(hweight64(alignment) != 1)) {
HPSB_ERR("%s called with invalid alignment: 0x%048llx",
- __FUNCTION__, (unsigned long long)alignment);
+ __func__, (unsigned long long)alignment);
return retval;
}
if (((start|end) & ~align_mask) || (start >= end) ||
(end > CSR1212_ALL_SPACE_END)) {
HPSB_ERR("%s called with invalid addresses "
- "(start = %012Lx end = %012Lx)", __FUNCTION__,
+ "(start = %012Lx end = %012Lx)", __func__,
(unsigned long long)start,(unsigned long long)end);
return retval;
}
if (((start|end) & 3) || (start >= end) ||
(end > CSR1212_ALL_SPACE_END)) {
- HPSB_ERR("%s called with invalid addresses", __FUNCTION__);
+ HPSB_ERR("%s called with invalid addresses", __func__);
return 0;
}
{
if (host->in_bus_reset) {
HPSB_NOTICE("%s called while bus reset already in progress",
- __FUNCTION__);
+ __func__);
return 1;
}
if (sid->port2 == SELFID_PORT_CHILD) cldcnt[n]++;
speedcap[n] = sid->speed;
+ if (speedcap[n] > host->csr.lnk_spd)
+ speedcap[n] = host->csr.lnk_spd;
n--;
}
}
return 0;
driver = container_of(drv, struct hpsb_protocol_driver, driver);
- for (id = driver->id_table; id->match_flags != 0; id++) {
+ id = driver->id_table;
+ if (!id)
+ return 0;
+
+ for (; id->match_flags != 0; id++) {
if ((id->match_flags & IEEE1394_MATCH_VENDOR_ID) &&
id->vendor_id != ud->vendor_id)
continue;
/* Module Parameters */
static int phys_dma = 1;
module_param(phys_dma, int, 0444);
-MODULE_PARM_DESC(phys_dma, "Enable physical dma (default = 1).");
+MODULE_PARM_DESC(phys_dma, "Enable physical DMA (default = 1).");
static void dma_trm_tasklet(unsigned long data);
static void dma_trm_reset(struct dma_trm_ctx *d);
/* FIXME: do something about it */
PRINT(KERN_ERR,
"%s: packet data addr: %p size %Zd bytes "
- "cross page boundary", __FUNCTION__,
+ "cross page boundary", __func__,
packet->data, packet->data_size);
}
#endif
spin_lock_irqsave(&d->lock, flags);
- list_splice(&d->fifo_list, &packet_list);
- list_splice(&d->pending_list, &packet_list);
- INIT_LIST_HEAD(&d->fifo_list);
- INIT_LIST_HEAD(&d->pending_list);
+ list_splice_init(&d->fifo_list, &packet_list);
+ list_splice_init(&d->pending_list, &packet_list);
d->branchAddrPtr = NULL;
d->sent_ind = d->prg_ind;
d->buf_bus = kzalloc(d->num_desc * sizeof(*d->buf_bus), GFP_ATOMIC);
if (d->buf_cpu == NULL || d->buf_bus == NULL) {
- PRINT(KERN_ERR, "Failed to allocate dma buffer");
+ PRINT(KERN_ERR, "Failed to allocate %s", "DMA buffer");
free_dma_rcv_ctx(d);
return -ENOMEM;
}
d->prg_bus = kzalloc(d->num_desc * sizeof(*d->prg_bus), GFP_ATOMIC);
if (d->prg_cpu == NULL || d->prg_bus == NULL) {
- PRINT(KERN_ERR, "Failed to allocate dma prg");
+ PRINT(KERN_ERR, "Failed to allocate %s", "DMA prg");
free_dma_rcv_ctx(d);
return -ENOMEM;
}
d->spb = kmalloc(d->split_buf_size, GFP_ATOMIC);
if (d->spb == NULL) {
- PRINT(KERN_ERR, "Failed to allocate split buffer");
+ PRINT(KERN_ERR, "Failed to allocate %s", "split buffer");
free_dma_rcv_ctx(d);
return -ENOMEM;
}
memset(d->buf_cpu[i], 0, d->buf_size);
} else {
PRINT(KERN_ERR,
- "Failed to allocate dma buffer");
+ "Failed to allocate %s", "DMA buffer");
free_dma_rcv_ctx(d);
return -ENOMEM;
}
memset(d->prg_cpu[i], 0, sizeof(struct dma_cmd));
} else {
PRINT(KERN_ERR,
- "Failed to allocate dma prg");
+ "Failed to allocate %s", "DMA prg");
free_dma_rcv_ctx(d);
return -ENOMEM;
}
d->prg_bus = kzalloc(d->num_desc * sizeof(*d->prg_bus), GFP_KERNEL);
if (d->prg_cpu == NULL || d->prg_bus == NULL) {
- PRINT(KERN_ERR, "Failed to allocate at dma prg");
+ PRINT(KERN_ERR, "Failed to allocate %s", "AT DMA prg");
free_dma_trm_ctx(d);
return -ENOMEM;
}
memset(d->prg_cpu[i], 0, sizeof(struct at_dma_prg));
} else {
PRINT(KERN_ERR,
- "Failed to allocate at dma prg");
+ "Failed to allocate %s", "AT DMA prg");
free_dma_trm_ctx(d);
return -ENOMEM;
}
* PCI Driver Interface functions *
***********************************/
-#define FAIL(err, fmt, args...) \
-do { \
- PRINT_G(KERN_ERR, fmt , ## args); \
- ohci1394_pci_remove(dev); \
- return err; \
-} while (0)
-
-static int __devinit ohci1394_pci_probe(struct pci_dev *dev,
- const struct pci_device_id *ent)
-{
- struct hpsb_host *host;
- struct ti_ohci *ohci; /* shortcut to currently handled device */
- resource_size_t ohci_base;
-
#ifdef CONFIG_PPC_PMAC
- /* Necessary on some machines if ohci1394 was loaded/ unloaded before */
+static void ohci1394_pmac_on(struct pci_dev *dev)
+{
if (machine_is(powermac)) {
struct device_node *ofn = pci_device_to_OF_node(dev);
pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 1);
}
}
+}
+
+static void ohci1394_pmac_off(struct pci_dev *dev)
+{
+ if (machine_is(powermac)) {
+ struct device_node *ofn = pci_device_to_OF_node(dev);
+
+ if (ofn) {
+ pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 0);
+ pmac_call_feature(PMAC_FTR_1394_CABLE_POWER, ofn, 0, 0);
+ }
+ }
+}
+#else
+#define ohci1394_pmac_on(dev)
+#define ohci1394_pmac_off(dev)
#endif /* CONFIG_PPC_PMAC */
- if (pci_enable_device(dev))
- FAIL(-ENXIO, "Failed to enable OHCI hardware");
+static int __devinit ohci1394_pci_probe(struct pci_dev *dev,
+ const struct pci_device_id *ent)
+{
+ struct hpsb_host *host;
+ struct ti_ohci *ohci; /* shortcut to currently handled device */
+ resource_size_t ohci_base;
+ int err = -ENOMEM;
+
+ ohci1394_pmac_on(dev);
+ if (pci_enable_device(dev)) {
+ PRINT_G(KERN_ERR, "Failed to enable OHCI hardware");
+ err = -ENXIO;
+ goto err;
+ }
pci_set_master(dev);
host = hpsb_alloc_host(&ohci1394_driver, sizeof(struct ti_ohci), &dev->dev);
- if (!host) FAIL(-ENOMEM, "Failed to allocate host structure");
-
+ if (!host) {
+ PRINT_G(KERN_ERR, "Failed to allocate %s", "host structure");
+ goto err;
+ }
ohci = host->hostdata;
ohci->dev = dev;
ohci->host = host;
(unsigned long long)pci_resource_len(dev, 0));
if (!request_mem_region(ohci_base, OHCI1394_REGISTER_SIZE,
- OHCI1394_DRIVER_NAME))
- FAIL(-ENOMEM, "MMIO resource (0x%llx - 0x%llx) unavailable",
+ OHCI1394_DRIVER_NAME)) {
+ PRINT_G(KERN_ERR, "MMIO resource (0x%llx - 0x%llx) unavailable",
(unsigned long long)ohci_base,
(unsigned long long)ohci_base + OHCI1394_REGISTER_SIZE);
+ goto err;
+ }
ohci->init_state = OHCI_INIT_HAVE_MEM_REGION;
ohci->registers = ioremap(ohci_base, OHCI1394_REGISTER_SIZE);
- if (ohci->registers == NULL)
- FAIL(-ENXIO, "Failed to remap registers - card not accessible");
+ if (ohci->registers == NULL) {
+ PRINT_G(KERN_ERR, "Failed to remap registers");
+ err = -ENXIO;
+ goto err;
+ }
ohci->init_state = OHCI_INIT_HAVE_IOMAPPING;
DBGMSG("Remapped memory spaces reg 0x%p", ohci->registers);
ohci->csr_config_rom_cpu =
pci_alloc_consistent(ohci->dev, OHCI_CONFIG_ROM_LEN,
&ohci->csr_config_rom_bus);
- if (ohci->csr_config_rom_cpu == NULL)
- FAIL(-ENOMEM, "Failed to allocate buffer config rom");
+ if (ohci->csr_config_rom_cpu == NULL) {
+ PRINT_G(KERN_ERR, "Failed to allocate %s", "buffer config rom");
+ goto err;
+ }
ohci->init_state = OHCI_INIT_HAVE_CONFIG_ROM_BUFFER;
/* self-id dma buffer allocation */
ohci->selfid_buf_cpu =
pci_alloc_consistent(ohci->dev, OHCI1394_SI_DMA_BUF_SIZE,
&ohci->selfid_buf_bus);
- if (ohci->selfid_buf_cpu == NULL)
- FAIL(-ENOMEM, "Failed to allocate DMA buffer for self-id packets");
+ if (ohci->selfid_buf_cpu == NULL) {
+ PRINT_G(KERN_ERR, "Failed to allocate %s", "self-ID buffer");
+ goto err;
+ }
ohci->init_state = OHCI_INIT_HAVE_SELFID_BUFFER;
if ((unsigned long)ohci->selfid_buf_cpu & 0x1fff)
if (alloc_dma_rcv_ctx(ohci, &ohci->ar_req_context,
DMA_CTX_ASYNC_REQ, 0, AR_REQ_NUM_DESC,
AR_REQ_BUF_SIZE, AR_REQ_SPLIT_BUF_SIZE,
- OHCI1394_AsReqRcvContextBase) < 0)
- FAIL(-ENOMEM, "Failed to allocate AR Req context");
-
+ OHCI1394_AsReqRcvContextBase) < 0) {
+ PRINT_G(KERN_ERR, "Failed to allocate %s", "AR Req context");
+ goto err;
+ }
/* AR DMA response context allocation */
if (alloc_dma_rcv_ctx(ohci, &ohci->ar_resp_context,
DMA_CTX_ASYNC_RESP, 0, AR_RESP_NUM_DESC,
AR_RESP_BUF_SIZE, AR_RESP_SPLIT_BUF_SIZE,
- OHCI1394_AsRspRcvContextBase) < 0)
- FAIL(-ENOMEM, "Failed to allocate AR Resp context");
-
+ OHCI1394_AsRspRcvContextBase) < 0) {
+ PRINT_G(KERN_ERR, "Failed to allocate %s", "AR Resp context");
+ goto err;
+ }
/* AT DMA request context */
if (alloc_dma_trm_ctx(ohci, &ohci->at_req_context,
DMA_CTX_ASYNC_REQ, 0, AT_REQ_NUM_DESC,
- OHCI1394_AsReqTrContextBase) < 0)
- FAIL(-ENOMEM, "Failed to allocate AT Req context");
-
+ OHCI1394_AsReqTrContextBase) < 0) {
+ PRINT_G(KERN_ERR, "Failed to allocate %s", "AT Req context");
+ goto err;
+ }
/* AT DMA response context */
if (alloc_dma_trm_ctx(ohci, &ohci->at_resp_context,
DMA_CTX_ASYNC_RESP, 1, AT_RESP_NUM_DESC,
- OHCI1394_AsRspTrContextBase) < 0)
- FAIL(-ENOMEM, "Failed to allocate AT Resp context");
-
+ OHCI1394_AsRspTrContextBase) < 0) {
+ PRINT_G(KERN_ERR, "Failed to allocate %s", "AT Resp context");
+ goto err;
+ }
/* Start off with a soft reset, to clear everything to a sane
* state. */
ohci_soft_reset(ohci);
* by that point.
*/
if (request_irq(dev->irq, ohci_irq_handler, IRQF_SHARED,
- OHCI1394_DRIVER_NAME, ohci))
- FAIL(-ENOMEM, "Failed to allocate shared interrupt %d", dev->irq);
-
+ OHCI1394_DRIVER_NAME, ohci)) {
+ PRINT_G(KERN_ERR, "Failed to allocate interrupt %d", dev->irq);
+ goto err;
+ }
ohci->init_state = OHCI_INIT_HAVE_IRQ;
ohci_initialize(ohci);
host->middle_addr_space = OHCI1394_MIDDLE_ADDRESS_SPACE;
/* Tell the highlevel this host is ready */
- if (hpsb_add_host(host))
- FAIL(-ENOMEM, "Failed to register host with highlevel");
-
+ if (hpsb_add_host(host)) {
+ PRINT_G(KERN_ERR, "Failed to register host with highlevel");
+ goto err;
+ }
ohci->init_state = OHCI_INIT_DONE;
return 0;
-#undef FAIL
+err:
+ ohci1394_pci_remove(dev);
+ return err;
}
-static void ohci1394_pci_remove(struct pci_dev *pdev)
+static void ohci1394_pci_remove(struct pci_dev *dev)
{
struct ti_ohci *ohci;
- struct device *dev;
+ struct device *device;
- ohci = pci_get_drvdata(pdev);
+ ohci = pci_get_drvdata(dev);
if (!ohci)
- return;
+ goto out;
- dev = get_device(&ohci->host->device);
+ device = get_device(&ohci->host->device);
switch (ohci->init_state) {
case OHCI_INIT_DONE:
/* Soft reset before we start - this disables
* interrupts and clears linkEnable and LPS. */
ohci_soft_reset(ohci);
- free_irq(ohci->dev->irq, ohci);
+ free_irq(dev->irq, ohci);
case OHCI_INIT_HAVE_TXRX_BUFFERS__MAYBE:
/* The ohci_soft_reset() stops all DMA contexts, so we
free_dma_trm_ctx(&ohci->at_resp_context);
case OHCI_INIT_HAVE_SELFID_BUFFER:
- pci_free_consistent(ohci->dev, OHCI1394_SI_DMA_BUF_SIZE,
+ pci_free_consistent(dev, OHCI1394_SI_DMA_BUF_SIZE,
ohci->selfid_buf_cpu,
ohci->selfid_buf_bus);
case OHCI_INIT_HAVE_CONFIG_ROM_BUFFER:
- pci_free_consistent(ohci->dev, OHCI_CONFIG_ROM_LEN,
+ pci_free_consistent(dev, OHCI_CONFIG_ROM_LEN,
ohci->csr_config_rom_cpu,
ohci->csr_config_rom_bus);
iounmap(ohci->registers);
case OHCI_INIT_HAVE_MEM_REGION:
- release_mem_region(pci_resource_start(ohci->dev, 0),
+ release_mem_region(pci_resource_start(dev, 0),
OHCI1394_REGISTER_SIZE);
-#ifdef CONFIG_PPC_PMAC
- /* On UniNorth, power down the cable and turn off the chip clock
- * to save power on laptops */
- if (machine_is(powermac)) {
- struct device_node* ofn = pci_device_to_OF_node(ohci->dev);
-
- if (ofn) {
- pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 0);
- pmac_call_feature(PMAC_FTR_1394_CABLE_POWER, ofn, 0, 0);
- }
- }
-#endif /* CONFIG_PPC_PMAC */
-
case OHCI_INIT_ALLOC_HOST:
- pci_set_drvdata(ohci->dev, NULL);
+ pci_set_drvdata(dev, NULL);
}
- if (dev)
- put_device(dev);
+ if (device)
+ put_device(device);
+out:
+ ohci1394_pmac_off(dev);
}
#ifdef CONFIG_PM
-static int ohci1394_pci_suspend(struct pci_dev *pdev, pm_message_t state)
+static int ohci1394_pci_suspend(struct pci_dev *dev, pm_message_t state)
{
int err;
- struct ti_ohci *ohci = pci_get_drvdata(pdev);
+ struct ti_ohci *ohci = pci_get_drvdata(dev);
if (!ohci) {
printk(KERN_ERR "%s: tried to suspend nonexisting host\n",
ohci_devctl(ohci->host, RESET_BUS, LONG_RESET_NO_FORCE_ROOT);
ohci_soft_reset(ohci);
- err = pci_save_state(pdev);
+ err = pci_save_state(dev);
if (err) {
PRINT(KERN_ERR, "pci_save_state failed with %d", err);
return err;
}
- err = pci_set_power_state(pdev, pci_choose_state(pdev, state));
+ err = pci_set_power_state(dev, pci_choose_state(dev, state));
if (err)
DBGMSG("pci_set_power_state failed with %d", err);
-
-/* PowerMac suspend code comes last */
-#ifdef CONFIG_PPC_PMAC
- if (machine_is(powermac)) {
- struct device_node *ofn = pci_device_to_OF_node(pdev);
-
- if (ofn)
- pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 0);
- }
-#endif /* CONFIG_PPC_PMAC */
+ ohci1394_pmac_off(dev);
return 0;
}
-static int ohci1394_pci_resume(struct pci_dev *pdev)
+static int ohci1394_pci_resume(struct pci_dev *dev)
{
int err;
- struct ti_ohci *ohci = pci_get_drvdata(pdev);
+ struct ti_ohci *ohci = pci_get_drvdata(dev);
if (!ohci) {
printk(KERN_ERR "%s: tried to resume nonexisting host\n",
}
DBGMSG("resume called");
-/* PowerMac resume code comes first */
-#ifdef CONFIG_PPC_PMAC
- if (machine_is(powermac)) {
- struct device_node *ofn = pci_device_to_OF_node(pdev);
-
- if (ofn)
- pmac_call_feature(PMAC_FTR_1394_ENABLE, ofn, 0, 1);
- }
-#endif /* CONFIG_PPC_PMAC */
-
- pci_set_power_state(pdev, PCI_D0);
- pci_restore_state(pdev);
- err = pci_enable_device(pdev);
+ ohci1394_pmac_on(dev);
+ pci_set_power_state(dev, PCI_D0);
+ pci_restore_state(dev);
+ err = pci_enable_device(dev);
if (err) {
PRINT(KERN_ERR, "pci_enable_device failed with %d", err);
return err;
if (addr > 15) {
PRINT(KERN_ERR, lynx->id,
"%s: PHY register address %d out of range",
- __FUNCTION__, addr);
+ __func__, addr);
return -1;
}
if (i > 10000) {
PRINT(KERN_ERR, lynx->id, "%s: runaway loop, aborting",
- __FUNCTION__);
+ __func__);
retval = -1;
break;
}
if (addr > 15) {
PRINT(KERN_ERR, lynx->id,
- "%s: PHY register address %d out of range", __FUNCTION__, addr);
+ "%s: PHY register address %d out of range", __func__, addr);
return -1;
}
if (val > 0xff) {
PRINT(KERN_ERR, lynx->id,
- "%s: PHY register value %d out of range", __FUNCTION__, val);
+ "%s: PHY register value %d out of range", __func__, val);
return -1;
}
if (page > 7) {
PRINT(KERN_ERR, lynx->id,
- "%s: PHY page %d out of range", __FUNCTION__, page);
+ "%s: PHY page %d out of range", __func__, page);
return -1;
}
if (port > 15) {
PRINT(KERN_ERR, lynx->id,
- "%s: PHY port %d out of range", __FUNCTION__, port);
+ "%s: PHY port %d out of range", __func__, port);
return -1;
}
spin_lock_irqsave(&lynx->async.queue_lock, flags);
reg_write(lynx, DMA_CHAN_CTRL(CHANNEL_ASYNC_SEND), 0);
- list_splice(&lynx->async.queue, &packet_list);
- INIT_LIST_HEAD(&lynx->async.queue);
+ list_splice_init(&lynx->async.queue, &packet_list);
if (list_empty(&lynx->async.pcl_queue)) {
spin_unlock_irqrestore(&lynx->async.queue_lock, flags);
static struct hpsb_protocol_driver raw1394_driver = {
.name = "raw1394",
- .id_table = raw1394_id_table,
};
/******************************************************************************/
cdev_init(&raw1394_cdev, &raw1394_fops);
raw1394_cdev.owner = THIS_MODULE;
- kobject_set_name(&raw1394_cdev.kobj, RAW1394_DEVICE_NAME);
ret = cdev_add(&raw1394_cdev, IEEE1394_RAW1394_DEV, 1);
if (ret) {
HPSB_ERR("raw1394 failed to register minor device block");
cmd->Current_SCpnt = Current_SCpnt;
list_add_tail(&cmd->list, &lu->cmd_orb_inuse);
} else
- SBP2_ERR("%s: no orbs available", __FUNCTION__);
+ SBP2_ERR("%s: no orbs available", __func__);
spin_unlock_irqrestore(&lu->cmd_orb_lock, flags);
return cmd;
}
data = cpu_to_be32(SBP2_BUSY_TIMEOUT_VALUE);
if (hpsb_node_write(lu->ne, SBP2_BUSY_TIMEOUT_ADDRESS, &data, 4))
- SBP2_ERR("%s error", __FUNCTION__);
+ SBP2_ERR("%s error", __func__);
return 0;
}
lu->sdev = sdev;
sdev->allow_restart = 1;
- /*
- * Update the dma alignment (minimum alignment requirements for
- * start and end of DMA transfers) to be a sector
- */
- blk_queue_update_dma_alignment(sdev->request_queue, 511);
+ /* SBP-2 requires quadlet alignment of the data buffers. */
+ blk_queue_update_dma_alignment(sdev->request_queue, 4 - 1);
if (lu->workarounds & SBP2_WORKAROUND_INQUIRY_36)
sdev->inquiry_len = 36;
MODULE_DEVICE_TABLE(ieee1394, video1394_id_table);
static struct hpsb_protocol_driver video1394_driver = {
- .name = VIDEO1394_DRIVER_NAME,
- .id_table = video1394_id_table,
+ .name = VIDEO1394_DRIVER_NAME,
};
cdev_init(&video1394_cdev, &video1394_fops);
video1394_cdev.owner = THIS_MODULE;
- kobject_set_name(&video1394_cdev.kobj, VIDEO1394_DRIVER_NAME);
ret = cdev_add(&video1394_cdev, IEEE1394_VIDEO1394_DEV, 16);
if (ret) {
PRINT_G(KERN_ERR, "video1394: unable to get minor device block");
to find out which userspace is blocking on what kernel operations.
config PROVIDE_OHCI1394_DMA_INIT
- bool "Provide code for enabling DMA over FireWire early on boot"
+ bool "Remote debugging over FireWire early on boot"
depends on PCI && X86
help
If you want to debug problems which hang or crash the kernel early
See Documentation/debugging-via-ohci1394.txt for more information.
+config FIREWIRE_OHCI_REMOTE_DMA
+ bool "Remote debugging over FireWire with firewire-ohci"
+ depends on FIREWIRE_OHCI
+ help
+ This option lets you use the FireWire bus for remote debugging
+ with help of the firewire-ohci driver. It enables unfiltered
+ remote DMA in firewire-ohci.
+ See Documentation/debugging-via-ohci1394.txt for more information.
+
+ If unsure, say N.
+
source "samples/Kconfig"
source "lib/Kconfig.kgdb"
projects / linux-2.6 / commitdiff