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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: sbp2: parallelize login, reconnect, logout
  firewire: sbp2: octlet AT payloads can be stack-allocated
  firewire: sbp2: omit Scsi_Host lock from queuecommand
  firewire: core: use non-reentrant workqueue with rescuer
  firewire: optimize iso queueing by setting wake only after the last packet
  firewire: octlet AT payloads can be stack-allocated
  firewire: ohci: optimize find_branch_descriptor()
  firewire: ohci: avoid separate DMA mapping for small AT payloads
  firewire: ohci: do not start DMA contexts before link is enabled
This commit is contained in:
Linus Torvalds 2011-05-21 12:25:07 -07:00
commit dcb4a1f0e0
16 changed files with 140 additions and 117 deletions
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27
drivers/firewire/core-card.c
View File

@ -228,8 +228,8 @@ void fw_schedule_bus_reset(struct fw_card *card, bool delayed, bool short_reset)
/* Use an arbitrary short delay to combine multiple reset requests. */
fw_card_get(card);
if (!schedule_delayed_work(&card->br_work,
delayed ? DIV_ROUND_UP(HZ, 100) : 0))
if (!queue_delayed_work(fw_workqueue, &card->br_work,
delayed ? DIV_ROUND_UP(HZ, 100) : 0))
fw_card_put(card);
}
EXPORT_SYMBOL(fw_schedule_bus_reset);
@ -241,7 +241,7 @@ static void br_work(struct work_struct *work)
/* Delay for 2s after last reset per IEEE 1394 clause 8.2.1. */
if (card->reset_jiffies != 0 &&
time_before64(get_jiffies_64(), card->reset_jiffies + 2 * HZ)) {
if (!schedule_delayed_work(&card->br_work, 2 * HZ))
if (!queue_delayed_work(fw_workqueue, &card->br_work, 2 * HZ))
fw_card_put(card);
return;
}
@ -258,8 +258,7 @@ static void allocate_broadcast_channel(struct fw_card *card, int generation)
if (!card->broadcast_channel_allocated) {
fw_iso_resource_manage(card, generation, 1ULL << 31,
&channel, &bandwidth, true,
card->bm_transaction_data);
&channel, &bandwidth, true);
if (channel != 31) {
fw_notify("failed to allocate broadcast channel\n");
return;
@ -294,6 +293,7 @@ static void bm_work(struct work_struct *work)
bool root_device_is_cmc;
bool irm_is_1394_1995_only;
bool keep_this_irm;
__be32 transaction_data[2];
spin_lock_irq(&card->lock);
@ -355,21 +355,21 @@ static void bm_work(struct work_struct *work)
goto pick_me;
}
card->bm_transaction_data[0] = cpu_to_be32(0x3f);
card->bm_transaction_data[1] = cpu_to_be32(local_id);
transaction_data[0] = cpu_to_be32(0x3f);
transaction_data[1] = cpu_to_be32(local_id);
spin_unlock_irq(&card->lock);
rcode = fw_run_transaction(card, TCODE_LOCK_COMPARE_SWAP,
irm_id, generation, SCODE_100,
CSR_REGISTER_BASE + CSR_BUS_MANAGER_ID,
card->bm_transaction_data, 8);
transaction_data, 8);
if (rcode == RCODE_GENERATION)
/* Another bus reset, BM work has been rescheduled. */
goto out;
bm_id = be32_to_cpu(card->bm_transaction_data[0]);
bm_id = be32_to_cpu(transaction_data[0]);
spin_lock_irq(&card->lock);
if (rcode == RCODE_COMPLETE && generation == card->generation)
@ -490,11 +490,11 @@ static void bm_work(struct work_struct *work)
/*
* Make sure that the cycle master sends cycle start packets.
*/
card->bm_transaction_data[0] = cpu_to_be32(CSR_STATE_BIT_CMSTR);
transaction_data[0] = cpu_to_be32(CSR_STATE_BIT_CMSTR);
rcode = fw_run_transaction(card, TCODE_WRITE_QUADLET_REQUEST,
root_id, generation, SCODE_100,
CSR_REGISTER_BASE + CSR_STATE_SET,
card->bm_transaction_data, 4);
transaction_data, 4);
if (rcode == RCODE_GENERATION)
goto out;
}
@ -630,6 +630,10 @@ static int dummy_queue_iso(struct fw_iso_context *ctx, struct fw_iso_packet *p,
return -ENODEV;
}
static void dummy_flush_queue_iso(struct fw_iso_context *ctx)
{
}
static const struct fw_card_driver dummy_driver_template = {
.read_phy_reg = dummy_read_phy_reg,
.update_phy_reg = dummy_update_phy_reg,
@ -641,6 +645,7 @@ static const struct fw_card_driver dummy_driver_template = {
.start_iso = dummy_start_iso,
.set_iso_channels = dummy_set_iso_channels,
.queue_iso = dummy_queue_iso,
.flush_queue_iso = dummy_flush_queue_iso,
};
void fw_card_release(struct kref *kref)

7
drivers/firewire/core-cdev.c
View File

@ -141,7 +141,6 @@ struct iso_resource {
int generation;
u64 channels;
s32 bandwidth;
__be32 transaction_data[2];
struct iso_resource_event *e_alloc, *e_dealloc;
};
@ -150,7 +149,7 @@ static void release_iso_resource(struct client *, struct client_resource *);
static void schedule_iso_resource(struct iso_resource *r, unsigned long delay)
{
client_get(r->client);
if (!schedule_delayed_work(&r->work, delay))
if (!queue_delayed_work(fw_workqueue, &r->work, delay))
client_put(r->client);
}
@ -1108,6 +1107,7 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg)
payload += u.packet.payload_length;
count++;
}
fw_iso_context_queue_flush(ctx);
a->size -= uptr_to_u64(p) - a->packets;
a->packets = uptr_to_u64(p);
@ -1229,8 +1229,7 @@ static void iso_resource_work(struct work_struct *work)
r->channels, &channel, &bandwidth,
todo == ISO_RES_ALLOC ||
todo == ISO_RES_REALLOC ||
todo == ISO_RES_ALLOC_ONCE,
r->transaction_data);
todo == ISO_RES_ALLOC_ONCE);
/*
* Is this generation outdated already? As long as this resource sticks
* in the idr, it will be scheduled again for a newer generation or at

31
drivers/firewire/core-device.c
View File

@ -725,6 +725,15 @@ struct fw_device *fw_device_get_by_devt(dev_t devt)
return device;
}
struct workqueue_struct *fw_workqueue;
EXPORT_SYMBOL(fw_workqueue);
static void fw_schedule_device_work(struct fw_device *device,
unsigned long delay)
{
queue_delayed_work(fw_workqueue, &device->work, delay);
}
/*
* These defines control the retry behavior for reading the config
* rom. It shouldn't be necessary to tweak these; if the device
@ -750,7 +759,7 @@ static void fw_device_shutdown(struct work_struct *work)
if (time_before64(get_jiffies_64(),
device->card->reset_jiffies + SHUTDOWN_DELAY)
&& !list_empty(&device->card->link)) {
schedule_delayed_work(&device->work, SHUTDOWN_DELAY);
fw_schedule_device_work(device, SHUTDOWN_DELAY);
return;
}
@ -862,7 +871,7 @@ static int lookup_existing_device(struct device *dev, void *data)
fw_notify("rediscovered device %s\n", dev_name(dev));
PREPARE_DELAYED_WORK(&old->work, fw_device_update);
schedule_delayed_work(&old->work, 0);
fw_schedule_device_work(old, 0);
if (current_node == card->root_node)
fw_schedule_bm_work(card, 0);
@ -953,7 +962,7 @@ static void fw_device_init(struct work_struct *work)
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);
fw_schedule_device_work(device, RETRY_DELAY);
} else {
if (device->node->link_on)
fw_notify("giving up on config rom for node id %x\n",
@ -1019,7 +1028,7 @@ static void fw_device_init(struct work_struct *work)
FW_DEVICE_INITIALIZING,
FW_DEVICE_RUNNING) == FW_DEVICE_GONE) {
PREPARE_DELAYED_WORK(&device->work, fw_device_shutdown);
schedule_delayed_work(&device->work, SHUTDOWN_DELAY);
fw_schedule_device_work(device, SHUTDOWN_DELAY);
} else {
if (device->config_rom_retries)
fw_notify("created device %s: GUID %08x%08x, S%d00, "
@ -1098,7 +1107,7 @@ static void fw_device_refresh(struct work_struct *work)
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);
fw_schedule_device_work(device, RETRY_DELAY / 2);
return;
}
@ -1131,7 +1140,7 @@ static void fw_device_refresh(struct work_struct *work)
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);
fw_schedule_device_work(device, RETRY_DELAY);
return;
}
@ -1158,7 +1167,7 @@ static void fw_device_refresh(struct work_struct *work)
gone:
atomic_set(&device->state, FW_DEVICE_GONE);
PREPARE_DELAYED_WORK(&device->work, fw_device_shutdown);
schedule_delayed_work(&device->work, SHUTDOWN_DELAY);
fw_schedule_device_work(device, SHUTDOWN_DELAY);
out:
if (node_id == card->root_node->node_id)
fw_schedule_bm_work(card, 0);
@ -1214,7 +1223,7 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event)
* first config rom scan half a second after bus reset.
*/
INIT_DELAYED_WORK(&device->work, fw_device_init);
schedule_delayed_work(&device->work, INITIAL_DELAY);
fw_schedule_device_work(device, INITIAL_DELAY);
break;
case FW_NODE_INITIATED_RESET:
@ -1230,7 +1239,7 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event)
FW_DEVICE_RUNNING,
FW_DEVICE_INITIALIZING) == FW_DEVICE_RUNNING) {
PREPARE_DELAYED_WORK(&device->work, fw_device_refresh);
schedule_delayed_work(&device->work,
fw_schedule_device_work(device,
device->is_local ? 0 : INITIAL_DELAY);
}
break;
@ -1245,7 +1254,7 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event)
device->generation = card->generation;
if (atomic_read(&device->state) == FW_DEVICE_RUNNING) {
PREPARE_DELAYED_WORK(&device->work, fw_device_update);
schedule_delayed_work(&device->work, 0);
fw_schedule_device_work(device, 0);
}
break;
@ -1270,7 +1279,7 @@ void fw_node_event(struct fw_card *card, struct fw_node *node, int event)
if (atomic_xchg(&device->state,
FW_DEVICE_GONE) == FW_DEVICE_RUNNING) {
PREPARE_DELAYED_WORK(&device->work, fw_device_shutdown);
schedule_delayed_work(&device->work,
fw_schedule_device_work(device,
list_empty(&card->link) ? 0 : SHUTDOWN_DELAY);
}
break;

27
drivers/firewire/core-iso.c
View File

@ -185,6 +185,12 @@ int fw_iso_context_queue(struct fw_iso_context *ctx,
}
EXPORT_SYMBOL(fw_iso_context_queue);
void fw_iso_context_queue_flush(struct fw_iso_context *ctx)
{
ctx->card->driver->flush_queue_iso(ctx);
}
EXPORT_SYMBOL(fw_iso_context_queue_flush);
int fw_iso_context_stop(struct fw_iso_context *ctx)
{
return ctx->card->driver->stop_iso(ctx);
@ -196,9 +202,10 @@ EXPORT_SYMBOL(fw_iso_context_stop);
*/
static int manage_bandwidth(struct fw_card *card, int irm_id, int generation,
int bandwidth, bool allocate, __be32 data[2])
int bandwidth, bool allocate)
{
int try, new, old = allocate ? BANDWIDTH_AVAILABLE_INITIAL : 0;
__be32 data[2];
/*
* On a 1394a IRM with low contention, try < 1 is enough.
@ -233,9 +240,10 @@ static int manage_bandwidth(struct fw_card *card, int irm_id, int generation,
}
static int manage_channel(struct fw_card *card, int irm_id, int generation,
u32 channels_mask, u64 offset, bool allocate, __be32 data[2])
u32 channels_mask, u64 offset, bool allocate)
{
__be32 bit, all, old;
__be32 data[2];
int channel, ret = -EIO, retry = 5;
old = all = allocate ? cpu_to_be32(~0) : 0;
@ -284,7 +292,7 @@ static int manage_channel(struct fw_card *card, int irm_id, int generation,
}
static void deallocate_channel(struct fw_card *card, int irm_id,
int generation, int channel, __be32 buffer[2])
int generation, int channel)
{
u32 mask;
u64 offset;
@ -293,7 +301,7 @@ static void deallocate_channel(struct fw_card *card, int irm_id,
offset = channel < 32 ? CSR_REGISTER_BASE + CSR_CHANNELS_AVAILABLE_HI :
CSR_REGISTER_BASE + CSR_CHANNELS_AVAILABLE_LO;
manage_channel(card, irm_id, generation, mask, offset, false, buffer);
manage_channel(card, irm_id, generation, mask, offset, false);
}
/**
@ -322,7 +330,7 @@ static void deallocate_channel(struct fw_card *card, int irm_id,
*/
void fw_iso_resource_manage(struct fw_card *card, int generation,
u64 channels_mask, int *channel, int *bandwidth,
bool allocate, __be32 buffer[2])
bool allocate)
{
u32 channels_hi = channels_mask; /* channels 31...0 */
u32 channels_lo = channels_mask >> 32; /* channels 63...32 */
@ -335,11 +343,11 @@ void fw_iso_resource_manage(struct fw_card *card, int generation,
if (channels_hi)
c = manage_channel(card, irm_id, generation, channels_hi,
CSR_REGISTER_BASE + CSR_CHANNELS_AVAILABLE_HI,
allocate, buffer);
allocate);
if (channels_lo && c < 0) {
c = manage_channel(card, irm_id, generation, channels_lo,
CSR_REGISTER_BASE + CSR_CHANNELS_AVAILABLE_LO,
allocate, buffer);
allocate);
if (c >= 0)
c += 32;
}
@ -351,14 +359,13 @@ void fw_iso_resource_manage(struct fw_card *card, int generation,
if (*bandwidth == 0)
return;
ret = manage_bandwidth(card, irm_id, generation, *bandwidth,
allocate, buffer);
ret = manage_bandwidth(card, irm_id, generation, *bandwidth, allocate);
if (ret < 0)
*bandwidth = 0;
if (allocate && ret < 0) {
if (c >= 0)
deallocate_channel(card, irm_id, generation, c, buffer);
deallocate_channel(card, irm_id, generation, c);
*channel = ret;
}
}

19
drivers/firewire/core-transaction.c
View File

@ -36,6 +36,7 @@
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/types.h>
#include <linux/workqueue.h>
#include <asm/byteorder.h>
@ -326,8 +327,8 @@ static int allocate_tlabel(struct fw_card *card)
* It will contain tag, channel, and sy data instead of a node ID then.
*
* The payload buffer at @data is going to be DMA-mapped except in case of
* quadlet-sized payload or of local (loopback) requests. Hence make sure that
* the buffer complies with the restrictions for DMA-mapped memory. The
* @length <= 8 or of local (loopback) requests. Hence make sure that the
* buffer complies with the restrictions of the streaming DMA mapping API.
* @payload must not be freed before the @callback is called.
*
* In case of request types without payload, @data is NULL and @length is 0.
@ -411,7 +412,8 @@ static void transaction_callback(struct fw_card *card, int rcode,
*
* Returns the RCODE. See fw_send_request() for parameter documentation.
* Unlike fw_send_request(), @data points to the payload of the request or/and
* to the payload of the response.
* to the payload of the response. DMA mapping restrictions apply to outbound
* request payloads of >= 8 bytes but not to inbound response payloads.
*/
int fw_run_transaction(struct fw_card *card, int tcode, int destination_id,
int generation, int speed, unsigned long long offset,
@ -1212,13 +1214,21 @@ static int __init fw_core_init(void)
{
int ret;
fw_workqueue = alloc_workqueue("firewire",
WQ_NON_REENTRANT | WQ_MEM_RECLAIM, 0);
if (!fw_workqueue)
return -ENOMEM;
ret = bus_register(&fw_bus_type);
if (ret < 0)
if (ret < 0) {
destroy_workqueue(fw_workqueue);
return ret;
}
fw_cdev_major = register_chrdev(0, "firewire", &fw_device_ops);
if (fw_cdev_major < 0) {
bus_unregister(&fw_bus_type);
destroy_workqueue(fw_workqueue);
return fw_cdev_major;
}
@ -1234,6 +1244,7 @@ static void __exit fw_core_cleanup(void)
{
unregister_chrdev(fw_cdev_major, "firewire");
bus_unregister(&fw_bus_type);
destroy_workqueue(fw_workqueue);
idr_destroy(&fw_device_idr);
}

2
drivers/firewire/core.h
View File

@ -97,6 +97,8 @@ struct fw_card_driver {
struct fw_iso_buffer *buffer,
unsigned long payload);
void (*flush_queue_iso)(struct fw_iso_context *ctx);
int (*stop_iso)(struct fw_iso_context *ctx);
};

4
drivers/firewire/net.c
View File

@ -881,7 +881,9 @@ static void fwnet_receive_broadcast(struct fw_iso_context *context,
spin_unlock_irqrestore(&dev->lock, flags);
if (retval < 0)
if (retval >= 0)
fw_iso_context_queue_flush(dev->broadcast_rcv_context);
else
fw_error("requeue failed\n");
}

64
drivers/firewire/ohci.c
View File

@ -1006,13 +1006,12 @@ static void ar_context_run(struct ar_context *ctx)
static struct descriptor *find_branch_descriptor(struct descriptor *d, int z)
{
int b, key;
__le16 branch;
b = (le16_to_cpu(d->control) & DESCRIPTOR_BRANCH_ALWAYS) >> 2;
key = (le16_to_cpu(d->control) & DESCRIPTOR_KEY_IMMEDIATE) >> 8;
branch = d->control & cpu_to_le16(DESCRIPTOR_BRANCH_ALWAYS);
/* figure out which descriptor the branch address goes in */
if (z == 2 && (b == 3 || key == 2))
if (z == 2 && branch == cpu_to_le16(DESCRIPTOR_BRANCH_ALWAYS))
return d;
else
return d + z - 1;
@ -1193,9 +1192,6 @@ static void context_append(struct context *ctx,
wmb(); /* finish init of new descriptors before branch_address update */
ctx->prev->branch_address = cpu_to_le32(d_bus | z);
ctx->prev = find_branch_descriptor(d, z);
reg_write(ctx->ohci, CONTROL_SET(ctx->regs), CONTEXT_WAKE);
flush_writes(ctx->ohci);
}
static void context_stop(struct context *ctx)
@ -1218,6 +1214,7 @@ static void context_stop(struct context *ctx)
}
struct driver_data {
u8 inline_data[8];
struct fw_packet *packet;
};
@ -1301,20 +1298,28 @@ static int at_context_queue_packet(struct context *ctx,
return -1;
}
BUILD_BUG_ON(sizeof(struct driver_data) > sizeof(struct descriptor));
driver_data = (struct driver_data *) &d[3];
driver_data->packet = packet;
packet->driver_data = driver_data;
if (packet->payload_length > 0) {
payload_bus =
dma_map_single(ohci->card.device, packet->payload,
packet->payload_length, DMA_TO_DEVICE);
if (dma_mapping_error(ohci->card.device, payload_bus)) {
packet->ack = RCODE_SEND_ERROR;
return -1;
if (packet->payload_length > sizeof(driver_data->inline_data)) {
payload_bus = dma_map_single(ohci->card.device,
packet->payload,
packet->payload_length,
DMA_TO_DEVICE);
if (dma_mapping_error(ohci->card.device, payload_bus)) {
packet->ack = RCODE_SEND_ERROR;
return -1;
}
packet->payload_bus = payload_bus;
packet->payload_mapped = true;
} else {
memcpy(driver_data->inline_data, packet->payload,
packet->payload_length);
payload_bus = d_bus + 3 * sizeof(*d);
}
packet->payload_bus = payload_bus;
packet->payload_mapped = true;
d[2].req_count = cpu_to_le16(packet->payload_length);
d[2].data_address = cpu_to_le32(payload_bus);
@ -1340,8 +1345,12 @@ static int at_context_queue_packet(struct context *ctx,
context_append(ctx, d, z, 4 - z);
if (!ctx->running)
if (ctx->running) {
reg_write(ohci, CONTROL_SET(ctx->regs), CONTEXT_WAKE);
flush_writes(ohci);
} else {
context_run(ctx, 0);
}
return 0;
}
@ -2066,8 +2075,6 @@ static int ohci_enable(struct fw_card *card,
reg_write(ohci, OHCI1394_SelfIDBuffer, ohci->self_id_bus);
reg_write(ohci, OHCI1394_LinkControlSet,
OHCI1394_LinkControl_rcvSelfID |
OHCI1394_LinkControl_rcvPhyPkt |
OHCI1394_LinkControl_cycleTimerEnable |
OHCI1394_LinkControl_cycleMaster);
@ -2094,9 +2101,6 @@ static int ohci_enable(struct fw_card *card,
reg_write(ohci, OHCI1394_FairnessControl, 0);
card->priority_budget_implemented = ohci->pri_req_max != 0;
ar_context_run(&ohci->ar_request_ctx);
ar_context_run(&ohci->ar_response_ctx);
reg_write(ohci, OHCI1394_PhyUpperBound, 0x00010000);
reg_write(ohci, OHCI1394_IntEventClear, ~0);
reg_write(ohci, OHCI1394_IntMaskClear, ~0);
@ -2186,7 +2190,13 @@ static int ohci_enable(struct fw_card *card,
reg_write(ohci, OHCI1394_HCControlSet,
OHCI1394_HCControl_linkEnable |
OHCI1394_HCControl_BIBimageValid);
flush_writes(ohci);
reg_write(ohci, OHCI1394_LinkControlSet,
OHCI1394_LinkControl_rcvSelfID |
OHCI1394_LinkControl_rcvPhyPkt);
ar_context_run(&ohci->ar_request_ctx);
ar_context_run(&ohci->ar_response_ctx); /* also flushes writes */
/* We are ready to go, reset bus to finish initialization. */
fw_schedule_bus_reset(&ohci->card, false, true);
@ -3112,6 +3122,15 @@ static int ohci_queue_iso(struct fw_iso_context *base,
return ret;
}
static void ohci_flush_queue_iso(struct fw_iso_context *base)
{
struct context *ctx =
&container_of(base, struct iso_context, base)->context;
reg_write(ctx->ohci, CONTROL_SET(ctx->regs), CONTEXT_WAKE);
flush_writes(ctx->ohci);
}
static const struct fw_card_driver ohci_driver = {
.enable = ohci_enable,
.read_phy_reg = ohci_read_phy_reg,
@ -3128,6 +3147,7 @@ static const struct fw_card_driver ohci_driver = {
.free_iso_context = ohci_free_iso_context,
.set_iso_channels = ohci_set_iso_channels,
.queue_iso = ohci_queue_iso,
.flush_queue_iso = ohci_flush_queue_iso,
.start_iso = ohci_start_iso,
.stop_iso = ohci_stop_iso,
};

37
drivers/firewire/sbp2.c
View File

@ -125,9 +125,6 @@ MODULE_PARM_DESC(workarounds, "Work around device bugs (default = 0"
", override internal blacklist = " __stringify(SBP2_WORKAROUND_OVERRIDE)
", or a combination)");
/* I don't know why the SCSI stack doesn't define something like this... */
typedef void (*scsi_done_fn_t)(struct scsi_cmnd *);
static const char sbp2_driver_name[] = "sbp2";
/*
@ -261,7 +258,6 @@ struct sbp2_orb {
struct kref kref;
dma_addr_t request_bus;
int rcode;
struct sbp2_pointer pointer;
void (*callback)(struct sbp2_orb * orb, struct sbp2_status * status);
struct list_head link;
};
@ -314,7 +310,6 @@ struct sbp2_command_orb {
u8 command_block[SBP2_MAX_CDB_SIZE];
} request;
struct scsi_cmnd *cmd;
scsi_done_fn_t done;
struct sbp2_logical_unit *lu;
struct sbp2_pointer page_table[SG_ALL] __attribute__((aligned(8)));
@ -494,10 +489,11 @@ static void sbp2_send_orb(struct sbp2_orb *orb, struct sbp2_logical_unit *lu,
int node_id, int generation, u64 offset)
{
struct fw_device *device = target_device(lu->tgt);
struct sbp2_pointer orb_pointer;
unsigned long flags;
orb->pointer.high = 0;
orb->pointer.low = cpu_to_be32(orb->request_bus);
orb_pointer.high = 0;
orb_pointer.low = cpu_to_be32(orb->request_bus);
spin_lock_irqsave(&device->card->lock, flags);
list_add_tail(&orb->link, &lu->orb_list);
@ -508,7 +504,7 @@ static void sbp2_send_orb(struct sbp2_orb *orb, struct sbp2_logical_unit *lu,
fw_send_request(device->card, &orb->t, TCODE_WRITE_BLOCK_REQUEST,
node_id, generation, device->max_speed, offset,
&orb->pointer, 8, complete_transaction, orb);
&orb_pointer, 8, complete_transaction, orb);
}
static int sbp2_cancel_orbs(struct sbp2_logical_unit *lu)
@ -830,8 +826,6 @@ static void sbp2_target_put(struct sbp2_target *tgt)
kref_put(&tgt->kref, sbp2_release_target);
}
static struct workqueue_struct *sbp2_wq;
/*
* Always get the target's kref when scheduling work on one its units.
* Each workqueue job is responsible to call sbp2_target_put() upon return.
@ -839,7 +833,7 @@ static struct workqueue_struct *sbp2_wq;
static void sbp2_queue_work(struct sbp2_logical_unit *lu, unsigned long delay)
{
sbp2_target_get(lu->tgt);
if (!queue_delayed_work(sbp2_wq, &lu->work, delay))
if (!queue_delayed_work(fw_workqueue, &lu->work, delay))
sbp2_target_put(lu->tgt);
}
@ -1398,7 +1392,7 @@ static void complete_command_orb(struct sbp2_orb *base_orb,
sbp2_unmap_scatterlist(device->card->device, orb);
orb->cmd->result = result;
orb->done(orb->cmd);
orb->cmd->scsi_done(orb->cmd);
}
static int sbp2_map_scatterlist(struct sbp2_command_orb *orb,
@ -1463,7 +1457,8 @@ static int sbp2_map_scatterlist(struct sbp2_command_orb *orb,
/* SCSI stack integration */
static int sbp2_scsi_queuecommand_lck(struct scsi_cmnd *cmd, scsi_done_fn_t done)
static int sbp2_scsi_queuecommand(struct Scsi_Host *shost,
struct scsi_cmnd *cmd)
{
struct sbp2_logical_unit *lu = cmd->device->hostdata;
struct fw_device *device = target_device(lu->tgt);
@ -1477,7 +1472,7 @@ static int sbp2_scsi_queuecommand_lck(struct scsi_cmnd *cmd, scsi_done_fn_t done
if (cmd->sc_data_direction == DMA_BIDIRECTIONAL) {
fw_error("Can't handle DMA_BIDIRECTIONAL, rejecting command\n");
cmd->result = DID_ERROR << 16;
done(cmd);
cmd->scsi_done(cmd);
return 0;
}
@ -1490,11 +1485,8 @@ static int sbp2_scsi_queuecommand_lck(struct scsi_cmnd *cmd, scsi_done_fn_t done
/* Initialize rcode to something not RCODE_COMPLETE. */
orb->base.rcode = -1;
kref_init(&orb->base.kref);
orb->lu = lu;
orb->done = done;
orb->cmd = cmd;
orb->lu = lu;
orb->cmd = cmd;
orb->request.next.high = cpu_to_be32(SBP2_ORB_NULL);
orb->request.misc = cpu_to_be32(
COMMAND_ORB_MAX_PAYLOAD(lu->tgt->max_payload) |
@ -1529,8 +1521,6 @@ static int sbp2_scsi_queuecommand_lck(struct scsi_cmnd *cmd, scsi_done_fn_t done
return retval;
}
static DEF_SCSI_QCMD(sbp2_scsi_queuecommand)
static int sbp2_scsi_slave_alloc(struct scsi_device *sdev)
{
struct sbp2_logical_unit *lu = sdev->hostdata;
@ -1653,17 +1643,12 @@ MODULE_ALIAS("sbp2");
static int __init sbp2_init(void)
{
sbp2_wq = create_singlethread_workqueue(KBUILD_MODNAME);
if (!sbp2_wq)
return -ENOMEM;
return driver_register(&sbp2_driver.driver);
}
static void __exit sbp2_cleanup(void)
{
driver_unregister(&sbp2_driver.driver);
destroy_workqueue(sbp2_wq);
}
module_init(sbp2_init);

15
drivers/media/dvb/firewire/firedtv-avc.c
View File

@ -1320,14 +1320,10 @@ static int cmp_read(struct firedtv *fdtv, u64 addr, __be32 *data)
{
int ret;
mutex_lock(&fdtv->avc_mutex);
ret = fdtv_read(fdtv, addr, data);
if (ret < 0)
dev_err(fdtv->device, "CMP: read I/O error\n");
mutex_unlock(&fdtv->avc_mutex);
return ret;
}
@ -1335,18 +1331,9 @@ static int cmp_lock(struct firedtv *fdtv, u64 addr, __be32 data[])
{
int ret;
mutex_lock(&fdtv->avc_mutex);
/* data[] is stack-allocated and should not be DMA-mapped. */
memcpy(fdtv->avc_data, data, 8);
ret = fdtv_lock(fdtv, addr, fdtv->avc_data);
ret = fdtv_lock(fdtv, addr, data);
if (ret < 0)
dev_err(fdtv->device, "CMP: lock I/O error\n");
else
memcpy(data, fdtv->avc_data, 8);
mutex_unlock(&fdtv->avc_mutex);
return ret;
}

1
drivers/media/dvb/firewire/firedtv-fw.c
View File

@ -125,6 +125,7 @@ static void handle_iso(struct fw_iso_context *context, u32 cycle,
i = (i + 1) & (N_PACKETS - 1);
}
fw_iso_context_queue_flush(ctx->context);
ctx->current_packet = i;
}

6
include/linux/firewire.h
View File

@ -125,7 +125,6 @@ struct fw_card {
struct delayed_work bm_work; /* bus manager job */
int bm_retries;
int bm_generation;
__be32 bm_transaction_data[2];
int bm_node_id;
bool bm_abdicate;
@ -441,12 +440,15 @@ int fw_iso_context_queue(struct fw_iso_context *ctx,
struct fw_iso_packet *packet,
struct fw_iso_buffer *buffer,
unsigned long payload);
void fw_iso_context_queue_flush(struct fw_iso_context *ctx);
int fw_iso_context_start(struct fw_iso_context *ctx,
int cycle, int sync, int tags);
int fw_iso_context_stop(struct fw_iso_context *ctx);
void fw_iso_context_destroy(struct fw_iso_context *ctx);
void fw_iso_resource_manage(struct fw_card *card, int generation,
u64 channels_mask, int *channel, int *bandwidth,
bool allocate, __be32 buffer[2]);
bool allocate);
extern struct workqueue_struct *fw_workqueue;
#endif /* _LINUX_FIREWIRE_H */

1
sound/firewire/amdtp.c
View File

@ -396,6 +396,7 @@ static void out_packet_callback(struct fw_iso_context *context, u32 cycle,
for (i = 0; i < packets; ++i)
queue_out_packet(s, ++cycle);
fw_iso_context_queue_flush(s->context);
}
static int queue_initial_skip_packets(struct amdtp_out_stream *s)

3
sound/firewire/cmp.c
View File

@ -49,10 +49,9 @@ static int pcr_modify(struct cmp_connection *c,
enum bus_reset_handling bus_reset_handling)
{
struct fw_device *device = fw_parent_device(c->resources.unit);
__be32 *buffer = c->resources.buffer;
int generation = c->resources.generation;
int rcode, errors = 0;
__be32 old_arg;
__be32 old_arg, buffer[2];
int err;
buffer[0] = c->last_pcr_value;

12
sound/firewire/iso-resources.c
View File

@ -11,7 +11,6 @@
#include <linux/jiffies.h>
#include <linux/mutex.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include "iso-resources.h"
@ -25,10 +24,6 @@
*/
int fw_iso_resources_init(struct fw_iso_resources *r, struct fw_unit *unit)
{
r->buffer = kmalloc(2 * 4, GFP_KERNEL);
if (!r->buffer)
return -ENOMEM;
r->channels_mask = ~0uLL;
r->unit = fw_unit_get(unit);
mutex_init(&r->mutex);
@ -44,7 +39,6 @@ int fw_iso_resources_init(struct fw_iso_resources *r, struct fw_unit *unit)
void fw_iso_resources_destroy(struct fw_iso_resources *r)
{
WARN_ON(r->allocated);
kfree(r->buffer);
mutex_destroy(&r->mutex);
fw_unit_put(r->unit);
}
@ -131,7 +125,7 @@ retry_after_bus_reset:
bandwidth = r->bandwidth + r->bandwidth_overhead;
fw_iso_resource_manage(card, r->generation, r->channels_mask,
&channel, &bandwidth, true, r->buffer);
&channel, &bandwidth, true);
if (channel == -EAGAIN) {
mutex_unlock(&r->mutex);
goto retry_after_bus_reset;
@ -184,7 +178,7 @@ int fw_iso_resources_update(struct fw_iso_resources *r)
bandwidth = r->bandwidth + r->bandwidth_overhead;
fw_iso_resource_manage(card, r->generation, 1uLL << r->channel,
&channel, &bandwidth, true, r->buffer);
&channel, &bandwidth, true);
/*
* When another bus reset happens, pretend that the allocation
* succeeded; we will try again for the new generation later.
@ -220,7 +214,7 @@ void fw_iso_resources_free(struct fw_iso_resources *r)
if (r->allocated) {
bandwidth = r->bandwidth + r->bandwidth_overhead;
fw_iso_resource_manage(card, r->generation, 1uLL << r->channel,
&channel, &bandwidth, false, r->buffer);
&channel, &bandwidth, false);
if (channel < 0)
dev_err(&r->unit->device,
"isochronous resource deallocation failed\n");

1
sound/firewire/iso-resources.h
View File

@ -24,7 +24,6 @@ struct fw_iso_resources {
unsigned int bandwidth_overhead;
int generation; /* in which allocation is valid */
bool allocated;
__be32 *buffer;
};
int fw_iso_resources_init(struct fw_iso_resources *r,