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

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: don't respond to broadcast write requests
  firewire: clean up fw_card reference counting
  firewire: clean up some includes
  firewire: remove unused struct members
  firewire: implement broadcast_channel CSR for 1394a compliance
  ieee1394: dump mmapped iso buffers in core files
  ieee1394: raw1394: Push the BKL down into the driver ioctls
  ieee1394: video1394: reorder module init, prepare BKL removal
  ieee1394: reduce log noise about config ROM CRC errors
This commit is contained in:
Linus Torvalds 2008-07-15 12:39:13 -07:00
parent b9d2252c1e a7ea67823a
commit 849c529f57
12 changed files with 125 additions and 53 deletions
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32
drivers/firewire/fw-card.c
View File

@ -16,12 +16,15 @@
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/completion.h>
#include <linux/crc-itu-t.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/kref.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/crc-itu-t.h>
#include "fw-transaction.h"
#include "fw-topology.h"
#include "fw-device.h"
@ -396,14 +399,16 @@ fw_card_initialize(struct fw_card *card, const struct fw_card_driver *driver,
{
static atomic_t index = ATOMIC_INIT(-1);
atomic_set(&card->device_count, 0);
card->index = atomic_inc_return(&index);
card->driver = driver;
card->device = device;
card->current_tlabel = 0;
card->tlabel_mask = 0;
card->color = 0;
card->broadcast_channel = BROADCAST_CHANNEL_INITIAL;
kref_init(&card->kref);
init_completion(&card->done);
INIT_LIST_HEAD(&card->transaction_list);
spin_lock_init(&card->lock);
setup_timer(&card->flush_timer,
@ -496,7 +501,6 @@ dummy_enable_phys_dma(struct fw_card *card,
}
static struct fw_card_driver dummy_driver = {
.name = "dummy",
.enable = dummy_enable,
.update_phy_reg = dummy_update_phy_reg,
.set_config_rom = dummy_set_config_rom,
@ -506,6 +510,14 @@ static struct fw_card_driver dummy_driver = {
.enable_phys_dma = dummy_enable_phys_dma,
};
void
fw_card_release(struct kref *kref)
{
struct fw_card *card = container_of(kref, struct fw_card, kref);
complete(&card->done);
}
void
fw_core_remove_card(struct fw_card *card)
{
@ -521,12 +533,10 @@ fw_core_remove_card(struct fw_card *card)
card->driver = &dummy_driver;
fw_destroy_nodes(card);
/*
* Wait for all device workqueue jobs to finish. Otherwise the
* firewire-core module could be unloaded before the jobs ran.
*/
while (atomic_read(&card->device_count) > 0)
msleep(100);
/* Wait for all users, especially device workqueue jobs, to finish. */
fw_card_put(card);
wait_for_completion(&card->done);
cancel_delayed_work_sync(&card->work);
fw_flush_transactions(card);

5
drivers/firewire/fw-device.c
View File

@ -168,7 +168,7 @@ static void fw_device_release(struct device *dev)
fw_node_put(device->node);
kfree(device->config_rom);
kfree(device);
atomic_dec(&card->device_count);
fw_card_put(card);
}
int fw_device_enable_phys_dma(struct fw_device *device)
@ -946,8 +946,7 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event)
*/
device_initialize(&device->device);
atomic_set(&device->state, FW_DEVICE_INITIALIZING);
atomic_inc(&card->device_count);
device->card = card;
device->card = fw_card_get(card);
device->node = fw_node_get(node);
device->node_id = node->node_id;
device->generation = card->generation;

1
drivers/firewire/fw-device.h
View File

@ -62,7 +62,6 @@ struct fw_device {
bool cmc;
struct fw_card *card;
struct device device;
struct list_head link;
struct list_head client_list;
u32 *config_rom;
size_t config_rom_length;

1
drivers/firewire/fw-ohci.c
View File

@ -2292,7 +2292,6 @@ ohci_queue_iso(struct fw_iso_context *base,
}
static const struct fw_card_driver ohci_driver = {
.name = ohci_driver_name,
.enable = ohci_enable,
.update_phy_reg = ohci_update_phy_reg,
.set_config_rom = ohci_set_config_rom,

32
drivers/firewire/fw-transaction.c
View File

@ -55,6 +55,9 @@
#define HEADER_GET_DATA_LENGTH(q) (((q) >> 16) & 0xffff)
#define HEADER_GET_EXTENDED_TCODE(q) (((q) >> 0) & 0xffff)
#define HEADER_DESTINATION_IS_BROADCAST(q) \
(((q) & HEADER_DESTINATION(0x3f)) == HEADER_DESTINATION(0x3f))
#define PHY_CONFIG_GAP_COUNT(gap_count) (((gap_count) << 16) | (1 << 22))
#define PHY_CONFIG_ROOT_ID(node_id) ((((node_id) & 0x3f) << 24) | (1 << 23))
#define PHY_IDENTIFIER(id) ((id) << 30)
@ -624,12 +627,9 @@ allocate_request(struct fw_packet *p)
void
fw_send_response(struct fw_card *card, struct fw_request *request, int rcode)
{
/*
* Broadcast packets are reported as ACK_COMPLETE, so this
* check is sufficient to ensure we don't send response to
* broadcast packets or posted writes.
*/
if (request->ack != ACK_PENDING) {
/* unified transaction or broadcast transaction: don't respond */
if (request->ack != ACK_PENDING ||
HEADER_DESTINATION_IS_BROADCAST(request->request_header[0])) {
kfree(request);
return;
}
@ -817,12 +817,13 @@ handle_registers(struct fw_card *card, struct fw_request *request,
int reg = offset & ~CSR_REGISTER_BASE;
unsigned long long bus_time;
__be32 *data = payload;
int rcode = RCODE_COMPLETE;
switch (reg) {
case CSR_CYCLE_TIME:
case CSR_BUS_TIME:
if (!TCODE_IS_READ_REQUEST(tcode) || length != 4) {
fw_send_response(card, request, RCODE_TYPE_ERROR);
rcode = RCODE_TYPE_ERROR;
break;
}
@ -831,7 +832,17 @@ handle_registers(struct fw_card *card, struct fw_request *request,
*data = cpu_to_be32(bus_time);
else
*data = cpu_to_be32(bus_time >> 25);
fw_send_response(card, request, RCODE_COMPLETE);
break;
case CSR_BROADCAST_CHANNEL:
if (tcode == TCODE_READ_QUADLET_REQUEST)
*data = cpu_to_be32(card->broadcast_channel);
else if (tcode == TCODE_WRITE_QUADLET_REQUEST)
card->broadcast_channel =
(be32_to_cpu(*data) & BROADCAST_CHANNEL_VALID) |
BROADCAST_CHANNEL_INITIAL;
else
rcode = RCODE_TYPE_ERROR;
break;
case CSR_BUS_MANAGER_ID:
@ -850,10 +861,13 @@ handle_registers(struct fw_card *card, struct fw_request *request,
case CSR_BUSY_TIMEOUT:
/* FIXME: Implement this. */
default:
fw_send_response(card, request, RCODE_ADDRESS_ERROR);
rcode = RCODE_ADDRESS_ERROR;
break;
}
fw_send_response(card, request, rcode);
}
static struct fw_address_handler registers = {

34
drivers/firewire/fw-transaction.h
View File

@ -19,14 +19,15 @@
#ifndef __fw_transaction_h
#define __fw_transaction_h
#include <linux/completion.h>
#include <linux/device.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/fs.h>
#include <linux/dma-mapping.h>
#include <linux/firewire-constants.h>
#include <asm/atomic.h>
#include <linux/kref.h>
#include <linux/list.h>
#include <linux/spinlock_types.h>
#include <linux/timer.h>
#include <linux/workqueue.h>
#define TCODE_IS_READ_REQUEST(tcode) (((tcode) & ~1) == 4)
#define TCODE_IS_BLOCK_PACKET(tcode) (((tcode) & 1) != 0)
@ -80,6 +81,9 @@
#define CSR_SPEED_MAP 0x2000
#define CSR_SPEED_MAP_END 0x3000
#define BROADCAST_CHANNEL_INITIAL (1 << 31 | 31)
#define BROADCAST_CHANNEL_VALID (1 << 30)
#define fw_notify(s, args...) printk(KERN_NOTICE KBUILD_MODNAME ": " s, ## args)
#define fw_error(s, args...) printk(KERN_ERR KBUILD_MODNAME ": " s, ## args)
@ -216,7 +220,8 @@ extern struct bus_type fw_bus_type;
struct fw_card {
const struct fw_card_driver *driver;
struct device *device;
atomic_t device_count;
struct kref kref;
struct completion done;
int node_id;
int generation;
@ -236,6 +241,7 @@ struct fw_card {
*/
int self_id_count;
u32 topology_map[252 + 3];
u32 broadcast_channel;
spinlock_t lock; /* Take this lock when handling the lists in
* this struct. */
@ -256,6 +262,20 @@ struct fw_card {
int bm_generation;
};
static inline struct fw_card *fw_card_get(struct fw_card *card)
{
kref_get(&card->kref);
return card;
}
void fw_card_release(struct kref *kref);
static inline void fw_card_put(struct fw_card *card)
{
kref_put(&card->kref, fw_card_release);
}
/*
* The iso packet format allows for an immediate header/payload part
* stored in 'header' immediately after the packet info plus an
@ -348,8 +368,6 @@ int
fw_iso_context_stop(struct fw_iso_context *ctx);
struct fw_card_driver {
const char *name;
/*
* Enable the given card with the given initial config rom.
* This function is expected to activate the card, and either

32
drivers/ieee1394/csr1212.c
View File

@ -1049,6 +1049,24 @@ int csr1212_read(struct csr1212_csr *csr, u32 offset, void *buffer, u32 len)
return -ENOENT;
}
/*
* Apparently there are many different wrong implementations of the CRC
* algorithm. We don't fail, we just warn... approximately once per GUID.
*/
static void
csr1212_check_crc(const u32 *buffer, size_t length, u16 crc, __be32 *guid)
{
static u64 last_bad_eui64;
u64 eui64 = ((u64)be32_to_cpu(guid[0]) << 32) | be32_to_cpu(guid[1]);
if (csr1212_crc16(buffer, length) == crc ||
csr1212_msft_crc16(buffer, length) == crc ||
eui64 == last_bad_eui64)
return;
printk(KERN_DEBUG "ieee1394: config ROM CRC error\n");
last_bad_eui64 = eui64;
}
/* Parse a chunk of data as a Config ROM */
@ -1092,11 +1110,8 @@ static int csr1212_parse_bus_info_block(struct csr1212_csr *csr)
return ret;
}
/* Apparently there are many different wrong implementations of the CRC
* algorithm. We don't fail, we just warn. */
if ((csr1212_crc16(bi->data, bi->crc_length) != bi->crc) &&
(csr1212_msft_crc16(bi->data, bi->crc_length) != bi->crc))
printk(KERN_DEBUG "IEEE 1394 device has ROM CRC error\n");
csr1212_check_crc(bi->data, bi->crc_length, bi->crc,
&csr->bus_info_data[3]);
cr = CSR1212_MALLOC(sizeof(*cr));
if (!cr)
@ -1205,11 +1220,8 @@ int csr1212_parse_keyval(struct csr1212_keyval *kv,
&cache->data[bytes_to_quads(kv->offset - cache->offset)];
kvi_len = be16_to_cpu(kvi->length);
/* Apparently there are many different wrong implementations of the CRC
* algorithm. We don't fail, we just warn. */
if ((csr1212_crc16(kvi->data, kvi_len) != kvi->crc) &&
(csr1212_msft_crc16(kvi->data, kvi_len) != kvi->crc))
printk(KERN_DEBUG "IEEE 1394 device has ROM CRC error\n");
/* GUID is wrong in here in case of extended ROM. We don't care. */
csr1212_check_crc(kvi->data, kvi_len, kvi->crc, &cache->data[3]);
switch (kv->key.type) {
case CSR1212_KV_TYPE_DIRECTORY:

2
drivers/ieee1394/dma.c
View File

@ -274,7 +274,7 @@ int dma_region_mmap(struct dma_region *dma, struct file *file,
vma->vm_ops = &dma_region_vm_ops;
vma->vm_private_data = dma;
vma->vm_file = file;
vma->vm_flags |= VM_RESERVED;
vma->vm_flags |= VM_RESERVED | VM_ALWAYSDUMP;
return 0;
}

4
drivers/ieee1394/highlevel.c
View File

@ -228,10 +228,8 @@ void hpsb_register_highlevel(struct hpsb_highlevel *hl)
{
unsigned long flags;
hpsb_init_highlevel(hl);
INIT_LIST_HEAD(&hl->addr_list);
INIT_LIST_HEAD(&hl->host_info_list);
rwlock_init(&hl->host_info_lock);
down_write(&hl_drivers_sem);
list_add_tail(&hl->hl_list, &hl_drivers);

13
drivers/ieee1394/highlevel.h
View File

@ -2,7 +2,7 @@
#define IEEE1394_HIGHLEVEL_H
#include <linux/list.h>
#include <linux/spinlock_types.h>
#include <linux/spinlock.h>
#include <linux/types.h>
struct module;
@ -103,6 +103,17 @@ int highlevel_lock64(struct hpsb_host *host, int nodeid, octlet_t *store,
void highlevel_fcp_request(struct hpsb_host *host, int nodeid, int direction,
void *data, size_t length);
/**
* hpsb_init_highlevel - initialize a struct hpsb_highlevel
*
* This is only necessary if hpsb_get_hostinfo_bykey can be called
* before hpsb_register_highlevel.
*/
static inline void hpsb_init_highlevel(struct hpsb_highlevel *hl)
{
rwlock_init(&hl->host_info_lock);
INIT_LIST_HEAD(&hl->host_info_list);
}
void hpsb_register_highlevel(struct hpsb_highlevel *hl);
void hpsb_unregister_highlevel(struct hpsb_highlevel *hl);

20
drivers/ieee1394/raw1394.c
View File

@ -2549,8 +2549,8 @@ static int raw1394_mmap(struct file *file, struct vm_area_struct *vma)
}
/* ioctl is only used for rawiso operations */
static int raw1394_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
static long do_raw1394_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct file_info *fi = file->private_data;
void __user *argp = (void __user *)arg;
@ -2656,6 +2656,16 @@ static int raw1394_ioctl(struct inode *inode, struct file *file,
return -EINVAL;
}
static long raw1394_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
long ret;
lock_kernel();
ret = do_raw1394_ioctl(file, cmd, arg);
unlock_kernel();
return ret;
}
#ifdef CONFIG_COMPAT
struct raw1394_iso_packets32 {
__u32 n_packets;
@ -2690,7 +2700,7 @@ static long raw1394_iso_xmit_recv_packets32(struct file *file, unsigned int cmd,
!copy_from_user(&infos32, &arg->infos, sizeof infos32)) {
infos = compat_ptr(infos32);
if (!copy_to_user(&dst->infos, &infos, sizeof infos))
err = raw1394_ioctl(NULL, file, cmd, (unsigned long)dst);
err = do_raw1394_ioctl(file, cmd, (unsigned long)dst);
}
return err;
}
@ -2731,7 +2741,7 @@ static long raw1394_compat_ioctl(struct file *file,
case RAW1394_IOC_ISO_GET_STATUS:
case RAW1394_IOC_ISO_SHUTDOWN:
case RAW1394_IOC_ISO_QUEUE_ACTIVITY:
err = raw1394_ioctl(NULL, file, cmd, arg);
err = do_raw1394_ioctl(file, cmd, arg);
break;
/* These request have different format. */
case RAW1394_IOC_ISO_RECV_PACKETS32:
@ -2984,7 +2994,7 @@ static const struct file_operations raw1394_fops = {
.read = raw1394_read,
.write = raw1394_write,
.mmap = raw1394_mmap,
.ioctl = raw1394_ioctl,
.unlocked_ioctl = raw1394_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = raw1394_compat_ioctl,
#endif

2
drivers/ieee1394/video1394.c
View File

@ -1503,6 +1503,8 @@ static int __init video1394_init_module (void)
{
int ret;
hpsb_init_highlevel(&video1394_highlevel);
cdev_init(&video1394_cdev, &video1394_fops);
video1394_cdev.owner = THIS_MODULE;
ret = cdev_add(&video1394_cdev, IEEE1394_VIDEO1394_DEV, 16);