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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6

Browse source 
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: state userland requirements in Kconfig help
  firewire: avoid memleak after phy config transmit failure
  firewire: fw-ohci: TSB43AB22/A dualbuffer workaround
  firewire: queue the right number of data
  firewire: warn on unfinished transactions during card removal
  firewire: small fw_fill_request cleanup
  firewire: fully initialize fw_transaction before marking it pending
  firewire: fix race of bus reset with request transmission
This commit is contained in:
Linus Torvalds 2008-07-27 10:24:06 -07:00
commit 837b41b5de
7 changed files with 64 additions and 68 deletions
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9
drivers/firewire/Kconfig
View file

@ -16,8 +16,13 @@ config FIREWIRE
enable the new stack.
To compile this driver as a module, say M here: the module will be
called firewire-core. It functionally replaces ieee1394, raw1394,
and video1394.
called firewire-core.
This module functionally replaces ieee1394, raw1394, and video1394.
To access it from application programs, you generally need at least
libraw1394 version 2. IIDC/DCAM applications also need libdc1394
version 2. No libraries are required to access storage devices
through the firewire-sbp2 driver.
config FIREWIRE_OHCI
tristate "OHCI-1394 controllers"

2
drivers/firewire/fw-card.c
View file

@ -539,7 +539,7 @@ fw_core_remove_card(struct fw_card *card)
wait_for_completion(&card->done);
cancel_delayed_work_sync(&card->work);
fw_flush_transactions(card);
WARN_ON(!list_empty(&card->transaction_list));
del_timer_sync(&card->flush_timer);
}
EXPORT_SYMBOL(fw_core_remove_card);

6
drivers/firewire/fw-cdev.c
View file

@ -382,9 +382,9 @@ complete_transaction(struct fw_card *card, int rcode,
response->response.type = FW_CDEV_EVENT_RESPONSE;
response->response.rcode = rcode;
queue_event(client, &response->event,
&response->response, sizeof(response->response),
response->response.data, response->response.length);
queue_event(client, &response->event, &response->response,
sizeof(response->response) + response->response.length,
NULL, 0);
}
static int ioctl_send_request(struct client *client, void *buffer)

37
drivers/firewire/fw-ohci.c
View file

@ -171,7 +171,6 @@ struct iso_context {
struct fw_ohci {
struct fw_card card;
u32 version;
__iomem char *registers;
dma_addr_t self_id_bus;
__le32 *self_id_cpu;
@ -180,6 +179,8 @@ struct fw_ohci {
int generation;
int request_generation; /* for timestamping incoming requests */
u32 bus_seconds;
bool use_dualbuffer;
bool old_uninorth;
bool bus_reset_packet_quirk;
@ -1885,7 +1886,7 @@ ohci_allocate_iso_context(struct fw_card *card, int type, size_t header_size)
} else {
mask = &ohci->ir_context_mask;
list = ohci->ir_context_list;
if (ohci->version >= OHCI_VERSION_1_1)
if (ohci->use_dualbuffer)
callback = handle_ir_dualbuffer_packet;
else
callback = handle_ir_packet_per_buffer;
@ -1949,7 +1950,7 @@ static int ohci_start_iso(struct fw_iso_context *base,
} else {
index = ctx - ohci->ir_context_list;
control = IR_CONTEXT_ISOCH_HEADER;
if (ohci->version >= OHCI_VERSION_1_1)
if (ohci->use_dualbuffer)
control |= IR_CONTEXT_DUAL_BUFFER_MODE;
match = (tags << 28) | (sync << 8) | ctx->base.channel;
if (cycle >= 0) {
@ -2279,7 +2280,7 @@ ohci_queue_iso(struct fw_iso_context *base,
spin_lock_irqsave(&ctx->context.ohci->lock, flags);
if (base->type == FW_ISO_CONTEXT_TRANSMIT)
retval = ohci_queue_iso_transmit(base, packet, buffer, payload);
else if (ctx->context.ohci->version >= OHCI_VERSION_1_1)
else if (ctx->context.ohci->use_dualbuffer)
retval = ohci_queue_iso_receive_dualbuffer(base, packet,
buffer, payload);
else
@ -2341,7 +2342,7 @@ 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;
u32 bus_options, max_receive, link_speed, version;
u64 guid;
int err;
size_t size;
@ -2366,12 +2367,6 @@ pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
pci_write_config_dword(dev, OHCI1394_PCI_HCI_Control, 0);
pci_set_drvdata(dev, ohci);
#if defined(CONFIG_PPC_PMAC) && defined(CONFIG_PPC32)
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,
@ -2390,6 +2385,23 @@ pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
goto fail_iomem;
}
version = reg_read(ohci, OHCI1394_Version) & 0x00ff00ff;
ohci->use_dualbuffer = version >= OHCI_VERSION_1_1;
/* x86-32 currently doesn't use highmem for dma_alloc_coherent */
#if !defined(CONFIG_X86_32)
/* dual-buffer mode is broken with descriptor addresses above 2G */
if (dev->vendor == PCI_VENDOR_ID_TI &&
dev->device == PCI_DEVICE_ID_TI_TSB43AB22)
ohci->use_dualbuffer = false;
#endif
#if defined(CONFIG_PPC_PMAC) && defined(CONFIG_PPC32)
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;
ar_context_init(&ohci->ar_request_ctx, ohci,
OHCI1394_AsReqRcvContextControlSet);
@ -2441,9 +2453,8 @@ pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
if (err < 0)
goto fail_self_id;
ohci->version = reg_read(ohci, OHCI1394_Version) & 0x00ff00ff;
fw_notify("Added fw-ohci device %s, OHCI version %x.%x\n",
dev->dev.bus_id, ohci->version >> 16, ohci->version & 0xff);
dev->dev.bus_id, version >> 16, version & 0xff);
return 0;
fail_self_id:

2
drivers/firewire/fw-topology.c
View file

@ -510,8 +510,6 @@ fw_core_handle_bus_reset(struct fw_card *card,
struct fw_node *local_node;
unsigned long flags;
fw_flush_transactions(card);
spin_lock_irqsave(&card->lock, flags);
/*

75
drivers/firewire/fw-transaction.c
View file

@ -22,6 +22,7 @@
#include <linux/kernel.h>
#include <linux/kref.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
@ -151,7 +152,7 @@ transmit_complete_callback(struct fw_packet *packet,
static void
fw_fill_request(struct fw_packet *packet, int tcode, int tlabel,
int node_id, int source_id, int generation, int speed,
int destination_id, int source_id, int generation, int speed,
unsigned long long offset, void *payload, size_t length)
{
int ext_tcode;
@ -166,7 +167,7 @@ fw_fill_request(struct fw_packet *packet, int tcode, int tlabel,
HEADER_RETRY(RETRY_X) |
HEADER_TLABEL(tlabel) |
HEADER_TCODE(tcode) |
HEADER_DESTINATION(node_id);
HEADER_DESTINATION(destination_id);
packet->header[1] =
HEADER_OFFSET_HIGH(offset >> 32) | HEADER_SOURCE(source_id);
packet->header[2] =
@ -252,7 +253,7 @@ fw_send_request(struct fw_card *card, struct fw_transaction *t,
fw_transaction_callback_t callback, void *callback_data)
{
unsigned long flags;
int tlabel, source;
int tlabel;
/*
* Bump the flush timer up 100ms first of all so we
@ -268,7 +269,6 @@ fw_send_request(struct fw_card *card, struct fw_transaction *t,
spin_lock_irqsave(&card->lock, flags);
source = card->node_id;
tlabel = card->current_tlabel;
if (card->tlabel_mask & (1 << tlabel)) {
spin_unlock_irqrestore(&card->lock, flags);
@ -279,77 +279,58 @@ fw_send_request(struct fw_card *card, struct fw_transaction *t,
card->current_tlabel = (card->current_tlabel + 1) & 0x1f;
card->tlabel_mask |= (1 << tlabel);
list_add_tail(&t->link, &card->transaction_list);
spin_unlock_irqrestore(&card->lock, flags);
/* Initialize rest of transaction, fill out packet and send it. */
t->node_id = node_id;
t->tlabel = tlabel;
t->callback = callback;
t->callback_data = callback_data;
fw_fill_request(&t->packet, tcode, t->tlabel,
node_id, source, generation,
speed, offset, payload, length);
fw_fill_request(&t->packet, tcode, t->tlabel, node_id, card->node_id,
generation, speed, offset, payload, length);
t->packet.callback = transmit_complete_callback;
list_add_tail(&t->link, &card->transaction_list);
spin_unlock_irqrestore(&card->lock, flags);
card->driver->send_request(card, &t->packet);
}
EXPORT_SYMBOL(fw_send_request);
struct fw_phy_packet {
struct fw_packet packet;
struct completion done;
struct kref kref;
};
static void phy_packet_release(struct kref *kref)
{
struct fw_phy_packet *p =
container_of(kref, struct fw_phy_packet, kref);
kfree(p);
}
static DEFINE_MUTEX(phy_config_mutex);
static DECLARE_COMPLETION(phy_config_done);
static void transmit_phy_packet_callback(struct fw_packet *packet,
struct fw_card *card, int status)
{
struct fw_phy_packet *p =
container_of(packet, struct fw_phy_packet, packet);
complete(&p->done);
kref_put(&p->kref, phy_packet_release);
complete(&phy_config_done);
}
static struct fw_packet phy_config_packet = {
.header_length = 8,
.payload_length = 0,
.speed = SCODE_100,
.callback = transmit_phy_packet_callback,
};
void fw_send_phy_config(struct fw_card *card,
int node_id, int generation, int gap_count)
{
struct fw_phy_packet *p;
long timeout = DIV_ROUND_UP(HZ, 10);
u32 data = PHY_IDENTIFIER(PHY_PACKET_CONFIG) |
PHY_CONFIG_ROOT_ID(node_id) |
PHY_CONFIG_GAP_COUNT(gap_count);
p = kmalloc(sizeof(*p), GFP_KERNEL);
if (p == NULL)
return;
mutex_lock(&phy_config_mutex);
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);
kref_set(&p->kref, 2);
phy_config_packet.header[0] = data;
phy_config_packet.header[1] = ~data;
phy_config_packet.generation = generation;
INIT_COMPLETION(phy_config_done);
card->driver->send_request(card, &p->packet);
timeout = wait_for_completion_timeout(&p->done, timeout);
kref_put(&p->kref, phy_packet_release);
card->driver->send_request(card, &phy_config_packet);
wait_for_completion_timeout(&phy_config_done, timeout);
/* will leak p if the callback is never executed */
WARN_ON(timeout == 0);
mutex_unlock(&phy_config_mutex);
}
void fw_flush_transactions(struct fw_card *card)

1
include/linux/pci_ids.h
View file

@ -748,6 +748,7 @@
#define PCI_VENDOR_ID_TI 0x104c
#define PCI_DEVICE_ID_TI_TVP4020 0x3d07
#define PCI_DEVICE_ID_TI_4450 0x8011
#define PCI_DEVICE_ID_TI_TSB43AB22 0x8023
#define PCI_DEVICE_ID_TI_XX21_XX11 0x8031
#define PCI_DEVICE_ID_TI_XX21_XX11_FM 0x8033
#define PCI_DEVICE_ID_TI_XX21_XX11_SD 0x8034