diff options
| -rw-r--r-- | drivers/firewire/Kconfig | 32 | ||||
| -rw-r--r-- | drivers/firewire/fw-cdev.c | 9 | ||||
| -rw-r--r-- | drivers/firewire/fw-ohci.c | 110 | ||||
| -rw-r--r-- | drivers/firewire/fw-transaction.c | 52 | ||||
| -rw-r--r-- | drivers/ieee1394/Kconfig | 118 |
5 files changed, 180 insertions, 141 deletions
diff --git a/drivers/firewire/Kconfig b/drivers/firewire/Kconfig index fb4d391810b..76f26710fc1 100644 --- a/drivers/firewire/Kconfig +++ b/drivers/firewire/Kconfig @@ -1,28 +1,26 @@ -comment "An alternative FireWire stack is available with EXPERIMENTAL=y" +comment "A new alternative FireWire stack is available with EXPERIMENTAL=y" depends on EXPERIMENTAL=n +comment "Enable only one of the two stacks, unless you know what you are doing" + depends on EXPERIMENTAL + config FIREWIRE - tristate "IEEE 1394 (FireWire) support - alternative stack, EXPERIMENTAL" + tristate "New FireWire stack, EXPERIMENTAL" depends on EXPERIMENTAL select CRC_ITU_T help This is the "Juju" FireWire stack, a new alternative implementation designed for robustness and simplicity. You can build either this - stack, or the classic stack (the ieee1394 driver, ohci1394 etc.) - or both. Please read http://wiki.linux1394.org/JujuMigration before - you enable the new stack. + stack, or the old stack (the ieee1394 driver, ohci1394 etc.) or both. + Please read http://wiki.linux1394.org/JujuMigration before you + 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. - NOTE: - - You should only build ONE of the stacks, unless you REALLY know what - you are doing. - config FIREWIRE_OHCI - tristate "Support for OHCI FireWire host controllers" + tristate "OHCI-1394 controllers" depends on PCI && FIREWIRE help Enable this driver if you have a FireWire controller based @@ -33,12 +31,12 @@ config FIREWIRE_OHCI called firewire-ohci. It replaces ohci1394 of the classic IEEE 1394 stack. - NOTE: + NOTE: - You should only build ohci1394 or firewire-ohci, but not both. - If you nevertheless want to install both, you should configure them - only as modules and blacklist the driver(s) which you don't want to - have auto-loaded. Add either + You should only build either firewire-ohci or the old ohci1394 driver, + but not both. If you nevertheless want to install both, you should + configure them only as modules and blacklist the driver(s) which you + don't want to have auto-loaded. Add either blacklist firewire-ohci or @@ -60,7 +58,7 @@ config FIREWIRE_OHCI_DEBUG default y config FIREWIRE_SBP2 - tristate "Support for storage devices (SBP-2 protocol driver)" + tristate "Storage devices (SBP-2 protocol)" depends on FIREWIRE && SCSI help This option enables you to use SBP-2 devices connected to a diff --git a/drivers/firewire/fw-cdev.c b/drivers/firewire/fw-cdev.c index dda14015e87..c639915fc3c 100644 --- a/drivers/firewire/fw-cdev.c +++ b/drivers/firewire/fw-cdev.c @@ -205,6 +205,7 @@ fw_device_op_read(struct file *file, return dequeue_event(client, buffer, count); } +/* caller must hold card->lock so that node pointers can be dereferenced here */ static void fill_bus_reset_event(struct fw_cdev_event_bus_reset *event, struct client *client) @@ -214,7 +215,6 @@ fill_bus_reset_event(struct fw_cdev_event_bus_reset *event, event->closure = client->bus_reset_closure; event->type = FW_CDEV_EVENT_BUS_RESET; event->generation = client->device->generation; - smp_rmb(); /* node_id must not be older than generation */ event->node_id = client->device->node_id; event->local_node_id = card->local_node->node_id; event->bm_node_id = 0; /* FIXME: We don't track the BM. */ @@ -274,6 +274,7 @@ static int ioctl_get_info(struct client *client, void *buffer) { struct fw_cdev_get_info *get_info = buffer; struct fw_cdev_event_bus_reset bus_reset; + struct fw_card *card = client->device->card; unsigned long ret = 0; client->version = get_info->version; @@ -299,13 +300,17 @@ static int ioctl_get_info(struct client *client, void *buffer) 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); + unsigned long flags; + spin_lock_irqsave(&card->lock, flags); fill_bus_reset_event(&bus_reset, client); + spin_unlock_irqrestore(&card->lock, flags); + if (copy_to_user(uptr, &bus_reset, sizeof(bus_reset))) return -EFAULT; } - get_info->card = client->device->card->index; + get_info->card = card->index; return 0; } diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c index 4f02c55f13e..0b66306af47 100644 --- a/drivers/firewire/fw-ohci.c +++ b/drivers/firewire/fw-ohci.c @@ -265,27 +265,25 @@ static void log_irqs(u32 evt) !(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) + fw_notify("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) ? " ?" : ""); } @@ -308,23 +306,22 @@ 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); + fw_notify("%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" : ""); + fw_notify("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)); + fw_notify("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[] = { @@ -373,15 +370,14 @@ static void log_ar_at_event(char dir, int speed, u32 *header, int evt) evt = 0x1f; if (evt == OHCI1394_evt_bus_reset) { - printk(KERN_DEBUG "A%c evt_bus_reset, generation %d\n", - dir, (header[2] >> 16) & 0xff); + fw_notify("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]); + fw_notify("A%c %s, %s, %08x\n", + dir, evts[evt], phys[header[0] >> 30 & 0x3], header[0]); return; } @@ -400,24 +396,23 @@ static void log_ar_at_event(char dir, int speed, u32 *header, int evt) switch (tcode) { case 0xe: case 0xa: - printk(KERN_DEBUG "A%c %s, %s\n", - dir, evts[evt], tcodes[tcode]); + fw_notify("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); + fw_notify("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); + fw_notify("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); } } @@ -548,6 +543,11 @@ static __le32 *handle_ar_packet(struct ar_context *ctx, __le32 *buffer) p.header_length = 12; p.payload_length = 0; break; + + default: + /* FIXME: Stop context, discard everything, and restart? */ + p.header_length = 0; + p.payload_length = 0; } p.payload = (void *) buffer + p.header_length; @@ -1468,6 +1468,9 @@ static int ohci_enable(struct fw_card *card, u32 *config_rom, size_t length) reg_write(ohci, OHCI1394_HCControlClear, OHCI1394_HCControl_noByteSwapData); + reg_write(ohci, OHCI1394_SelfIDBuffer, ohci->self_id_bus); + reg_write(ohci, OHCI1394_LinkControlClear, + OHCI1394_LinkControl_rcvPhyPkt); reg_write(ohci, OHCI1394_LinkControlSet, OHCI1394_LinkControl_rcvSelfID | OHCI1394_LinkControl_cycleTimerEnable | @@ -1481,7 +1484,6 @@ static int ohci_enable(struct fw_card *card, u32 *config_rom, size_t length) ar_context_run(&ohci->ar_request_ctx); ar_context_run(&ohci->ar_response_ctx); - reg_write(ohci, OHCI1394_SelfIDBuffer, ohci->self_id_bus); reg_write(ohci, OHCI1394_PhyUpperBound, 0x00010000); reg_write(ohci, OHCI1394_IntEventClear, ~0); reg_write(ohci, OHCI1394_IntMaskClear, ~0); diff --git a/drivers/firewire/fw-transaction.c b/drivers/firewire/fw-transaction.c index ccf0e4cf108..03ae8a77c47 100644 --- a/drivers/firewire/fw-transaction.c +++ b/drivers/firewire/fw-transaction.c @@ -20,6 +20,7 @@ #include <linux/completion.h> #include <linux/kernel.h> +#include <linux/kref.h> #include <linux/module.h> #include <linux/init.h> #include <linux/interrupt.h> @@ -297,37 +298,55 @@ EXPORT_SYMBOL(fw_send_request); struct fw_phy_packet { struct fw_packet packet; struct completion done; + struct kref kref; }; -static void -transmit_phy_packet_callback(struct fw_packet *packet, - struct fw_card *card, int status) +static void phy_packet_release(struct kref *kref) +{ + struct fw_phy_packet *p = + container_of(kref, struct fw_phy_packet, kref); + kfree(p); +} + +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); } void fw_send_phy_config(struct fw_card *card, int node_id, int generation, int gap_count) { - struct fw_phy_packet p; + 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.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); + p = kmalloc(sizeof(*p), GFP_KERNEL); + if (p == NULL) + return; + + 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); + + card->driver->send_request(card, &p->packet); + timeout = wait_for_completion_timeout(&p->done, timeout); + kref_put(&p->kref, phy_packet_release); + + /* will leak p if the callback is never executed */ + WARN_ON(timeout == 0); } void fw_flush_transactions(struct fw_card *card) @@ -572,7 +591,8 @@ allocate_request(struct fw_packet *p) break; default: - BUG(); + fw_error("ERROR - corrupt request received - %08x %08x %08x\n", + p->header[0], p->header[1], p->header[2]); return NULL; } diff --git a/drivers/ieee1394/Kconfig b/drivers/ieee1394/Kconfig index 545663ef820..95f45f9b8e5 100644 --- a/drivers/ieee1394/Kconfig +++ b/drivers/ieee1394/Kconfig @@ -4,7 +4,7 @@ menu "IEEE 1394 (FireWire) support" source "drivers/firewire/Kconfig" config IEEE1394 - tristate "IEEE 1394 (FireWire) support" + tristate "Stable FireWire stack" depends on PCI || BROKEN help IEEE 1394 describes a high performance serial bus, which is also @@ -19,30 +19,45 @@ config IEEE1394 To compile this driver as a module, say M here: the module will be called ieee1394. -comment "Subsystem Options" - depends on IEEE1394 - -config IEEE1394_VERBOSEDEBUG - bool "Excessive debugging output" - depends on IEEE1394 +config IEEE1394_OHCI1394 + tristate "OHCI-1394 controllers" + depends on PCI && IEEE1394 help - If you say Y here, you will get very verbose debugging logs from - the subsystem which includes a dump of the header of every sent - and received packet. This can amount to a high amount of data - collected in a very short time which is usually also saved to - disk by the system logging daemons. + Enable this driver if you have an IEEE 1394 controller based on the + OHCI-1394 specification. The current driver is only tested with OHCI + chipsets made by Texas Instruments and NEC. Most third-party vendors + use one of these chipsets. It should work with any OHCI-1394 + compliant card, however. - Say Y if you really want or need the debugging output, everyone - else says N. + To compile this driver as a module, say M here: the + module will be called ohci1394. -comment "Controllers" - depends on IEEE1394 + NOTE: -comment "Texas Instruments PCILynx requires I2C" + You should only build either ohci1394 or the new firewire-ohci driver, + but not both. If you nevertheless want to install both, you should + configure them only as modules and blacklist the driver(s) which you + don't want to have auto-loaded. Add either + + blacklist firewire-ohci + or + blacklist ohci1394 + blacklist video1394 + blacklist dv1394 + + to /etc/modprobe.conf or /etc/modprobe.d/* and update modprobe.conf + depending on your distribution. The latter two modules should be + blacklisted together with ohci1394 because they depend on ohci1394. + + If you have an old modprobe which doesn't implement the blacklist + directive, use "install modulename /bin/true" for the modules to be + blacklisted. + +comment "PCILynx controller requires I2C" depends on IEEE1394 && I2C=n config IEEE1394_PCILYNX - tristate "Texas Instruments PCILynx support" + tristate "PCILynx controller" depends on PCI && IEEE1394 && I2C select I2C_ALGOBIT help @@ -57,35 +72,11 @@ config IEEE1394_PCILYNX PowerMacs G3 B&W contain the PCILynx controller. Therefore almost everybody can say N here. -config IEEE1394_OHCI1394 - tristate "OHCI-1394 support" - depends on PCI && IEEE1394 - help - Enable this driver if you have an IEEE 1394 controller based on the - OHCI-1394 specification. The current driver is only tested with OHCI - chipsets made by Texas Instruments and NEC. Most third-party vendors - use one of these chipsets. It should work with any OHCI-1394 - compliant card, however. - - To compile this driver as a module, say M here: the - module will be called ohci1394. - -comment "Protocols" - depends on IEEE1394 - -config IEEE1394_VIDEO1394 - tristate "OHCI-1394 Video support" - depends on IEEE1394 && IEEE1394_OHCI1394 - help - This option enables video device usage for OHCI-1394 cards. Enable - this option only if you have an IEEE 1394 video device connected to - an OHCI-1394 card. - comment "SBP-2 support (for storage devices) requires SCSI" depends on IEEE1394 && SCSI=n config IEEE1394_SBP2 - tristate "SBP-2 support (Harddisks etc.)" + tristate "Storage devices (SBP-2 protocol)" depends on IEEE1394 && SCSI help This option enables you to use SBP-2 devices connected to an IEEE @@ -127,24 +118,47 @@ config IEEE1394_ETH1394 The module is called eth1394 although it does not emulate Ethernet. +config IEEE1394_RAWIO + tristate "raw1394 userspace interface" + depends on IEEE1394 + help + This option adds support for the raw1394 device file which enables + direct communication of user programs with IEEE 1394 devices + (isochronous and asynchronous). Almost all application programs + which access FireWire require this option. + + To compile this driver as a module, say M here: the module will be + called raw1394. + +config IEEE1394_VIDEO1394 + tristate "video1394 userspace interface" + depends on IEEE1394 && IEEE1394_OHCI1394 + help + This option adds support for the video1394 device files which enable + isochronous communication of user programs with IEEE 1394 devices, + especially video capture or export. This interface is used by all + libdc1394 based programs and by several other programs, in addition to + the raw1394 interface. It is generally not required for DV capture. + + To compile this driver as a module, say M here: the module will be + called video1394. + config IEEE1394_DV1394 - tristate "OHCI-DV I/O support (deprecated)" + tristate "dv1394 userspace interface (deprecated)" depends on IEEE1394 && IEEE1394_OHCI1394 help The dv1394 driver is unsupported and may be removed from Linux in a future release. Its functionality is now provided by raw1394 together with libraries such as libiec61883. -config IEEE1394_RAWIO - tristate "Raw IEEE1394 I/O support" +config IEEE1394_VERBOSEDEBUG + bool "Excessive debugging output" depends on IEEE1394 help - This option adds support for the raw1394 device file which enables - direct communication of user programs with the IEEE 1394 bus and thus - with the attached peripherals. Almost all application programs which - access FireWire require this option. + If you say Y here, you will get very verbose debugging logs from the + ieee1394 drivers, including sent and received packet headers. This + will quickly result in large amounts of data sent to the system log. - To compile this driver as a module, say M here: the module will be - called raw1394. + Say Y if you really need the debugging output. Everyone else says N. endmenu |