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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: Install firewire-constants.h and firewire-cdev.h for userspace.
  firewire: Change struct fw_cdev_iso_packet to not use bitfields.
  firewire: Implement suspend/resume PCI driver hooks.
  firewire: add to MAINTAINERS
  firewire: fw-sbp2: implement sysfs ieee1394_id
  ieee1394: sbp2: offer SAM-conforming target port ID in sysfs
  ieee1394: fix calculation of sysfs attribute "address"
This commit is contained in:
Linus Torvalds 2007-06-01 08:28:15 -07:00
commit f285e3d329
11 changed files with 247 additions and 79 deletions
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8
MAINTAINERS
View File

@ -1498,6 +1498,14 @@ P: Alexander Viro
M: viro@zeniv.linux.org.uk
S: Maintained
FIREWIRE SUBSYSTEM
P: Kristian Hoegsberg, Stefan Richter
M: krh@redhat.com, stefanr@s5r6.in-berlin.de
L: linux1394-devel@lists.sourceforge.net
W: http://www.linux1394.org/
T: git kernel.org:/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6.git
S: Maintained
FIRMWARE LOADER (request_firmware)
L: linux-kernel@vger.kernel.org
S: Orphan

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

@ -407,11 +407,6 @@ fw_card_add(struct fw_card *card,
card->link_speed = link_speed;
card->guid = guid;
/* Activate link_on bit and contender bit in our self ID packets.*/
if (card->driver->update_phy_reg(card, 4, 0,
PHY_LINK_ACTIVE | PHY_CONTENDER) < 0)
return -EIO;
/*
* The subsystem grabs a reference when the card is added and
* drops it when the driver calls fw_core_remove_card.

17
drivers/firewire/fw-cdev.c
View File

@ -677,12 +677,21 @@ static int ioctl_create_iso_context(struct client *client, void *buffer)
return 0;
}
/* Macros for decoding the iso packet control header. */
#define GET_PAYLOAD_LENGTH(v) ((v) & 0xffff)
#define GET_INTERRUPT(v) (((v) >> 16) & 0x01)
#define GET_SKIP(v) (((v) >> 17) & 0x01)
#define GET_TAG(v) (((v) >> 18) & 0x02)
#define GET_SY(v) (((v) >> 20) & 0x04)
#define GET_HEADER_LENGTH(v) (((v) >> 24) & 0xff)
static int ioctl_queue_iso(struct client *client, void *buffer)
{
struct fw_cdev_queue_iso *request = buffer;
struct fw_cdev_iso_packet __user *p, *end, *next;
struct fw_iso_context *ctx = client->iso_context;
unsigned long payload, buffer_end, header_length;
u32 control;
int count;
struct {
struct fw_iso_packet packet;
@ -717,8 +726,14 @@ static int ioctl_queue_iso(struct client *client, void *buffer)
end = (void __user *)p + request->size;
count = 0;
while (p < end) {
if (__copy_from_user(&u.packet, p, sizeof(*p)))
if (get_user(control, &p->control))
return -EFAULT;
u.packet.payload_length = GET_PAYLOAD_LENGTH(control);
u.packet.interrupt = GET_INTERRUPT(control);
u.packet.skip = GET_SKIP(control);
u.packet.tag = GET_TAG(control);
u.packet.sy = GET_SY(control);
u.packet.header_length = GET_HEADER_LENGTH(control);
if (ctx->type == FW_ISO_CONTEXT_TRANSMIT) {
header_length = u.packet.header_length;

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

@ -99,6 +99,7 @@ fw_unit(struct device *dev)
#define CSR_DEPENDENT_INFO 0x14
#define CSR_MODEL 0x17
#define CSR_INSTANCE 0x18
#define CSR_DIRECTORY_ID 0x20
#define SBP2_COMMAND_SET_SPECIFIER 0x38
#define SBP2_COMMAND_SET 0x39

187
drivers/firewire/fw-ohci.c
View File

@ -417,12 +417,21 @@ ar_context_init(struct ar_context *ctx, struct fw_ohci *ohci, u32 regs)
ctx->current_buffer = ab.next;
ctx->pointer = ctx->current_buffer->data;
reg_write(ctx->ohci, COMMAND_PTR(ctx->regs),
le32_to_cpu(ab.descriptor.branch_address));
return 0;
}
static void ar_context_run(struct ar_context *ctx)
{
struct ar_buffer *ab = ctx->current_buffer;
dma_addr_t ab_bus;
size_t offset;
offset = offsetof(struct ar_buffer, data);
ab_bus = ab->descriptor.data_address - offset;
reg_write(ctx->ohci, COMMAND_PTR(ctx->regs), ab_bus | 1);
reg_write(ctx->ohci, CONTROL_SET(ctx->regs), CONTEXT_RUN);
flush_writes(ctx->ohci);
return 0;
}
static void context_tasklet(unsigned long data)
@ -1039,11 +1048,78 @@ static irqreturn_t irq_handler(int irq, void *data)
return IRQ_HANDLED;
}
static int software_reset(struct fw_ohci *ohci)
{
int i;
reg_write(ohci, OHCI1394_HCControlSet, OHCI1394_HCControl_softReset);
for (i = 0; i < OHCI_LOOP_COUNT; i++) {
if ((reg_read(ohci, OHCI1394_HCControlSet) &
OHCI1394_HCControl_softReset) == 0)
return 0;
msleep(1);
}
return -EBUSY;
}
static int ohci_enable(struct fw_card *card, u32 *config_rom, size_t length)
{
struct fw_ohci *ohci = fw_ohci(card);
struct pci_dev *dev = to_pci_dev(card->device);
if (software_reset(ohci)) {
fw_error("Failed to reset ohci card.\n");
return -EBUSY;
}
/*
* Now enable LPS, which we need in order to start accessing
* 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.
*/
reg_write(ohci, OHCI1394_HCControlSet,
OHCI1394_HCControl_LPS |
OHCI1394_HCControl_postedWriteEnable);
flush_writes(ohci);
msleep(50);
reg_write(ohci, OHCI1394_HCControlClear,
OHCI1394_HCControl_noByteSwapData);
reg_write(ohci, OHCI1394_LinkControlSet,
OHCI1394_LinkControl_rcvSelfID |
OHCI1394_LinkControl_cycleTimerEnable |
OHCI1394_LinkControl_cycleMaster);
reg_write(ohci, OHCI1394_ATRetries,
OHCI1394_MAX_AT_REQ_RETRIES |
(OHCI1394_MAX_AT_RESP_RETRIES << 4) |
(OHCI1394_MAX_PHYS_RESP_RETRIES << 8));
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);
reg_write(ohci, OHCI1394_IntMaskSet,
OHCI1394_selfIDComplete |
OHCI1394_RQPkt | OHCI1394_RSPkt |
OHCI1394_reqTxComplete | OHCI1394_respTxComplete |
OHCI1394_isochRx | OHCI1394_isochTx |
OHCI1394_masterIntEnable |
OHCI1394_cycle64Seconds);
/* Activate link_on bit and contender bit in our self ID packets.*/
if (ohci_update_phy_reg(card, 4, 0,
PHY_LINK_ACTIVE | PHY_CONTENDER) < 0)
return -EIO;
/*
* When the link is not yet enabled, the atomic config rom
* update mechanism described below in ohci_set_config_rom()
@ -1701,22 +1777,6 @@ static const struct fw_card_driver ohci_driver = {
.stop_iso = ohci_stop_iso,
};
static int software_reset(struct fw_ohci *ohci)
{
int i;
reg_write(ohci, OHCI1394_HCControlSet, OHCI1394_HCControl_softReset);
for (i = 0; i < OHCI_LOOP_COUNT; i++) {
if ((reg_read(ohci, OHCI1394_HCControlSet) &
OHCI1394_HCControl_softReset) == 0)
return 0;
msleep(1);
}
return -EBUSY;
}
static int __devinit
pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
{
@ -1762,33 +1822,6 @@ pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
goto fail_iomem;
}
if (software_reset(ohci)) {
fw_error("Failed to reset ohci card.\n");
err = -EBUSY;
goto fail_registers;
}
/*
* Now enable LPS, which we need in order to start accessing
* 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.
*/
reg_write(ohci, OHCI1394_HCControlSet,
OHCI1394_HCControl_LPS |
OHCI1394_HCControl_postedWriteEnable);
flush_writes(ohci);
msleep(50);
reg_write(ohci, OHCI1394_HCControlClear,
OHCI1394_HCControl_noByteSwapData);
reg_write(ohci, OHCI1394_LinkControlSet,
OHCI1394_LinkControl_rcvSelfID |
OHCI1394_LinkControl_cycleTimerEnable |
OHCI1394_LinkControl_cycleMaster);
ar_context_init(&ohci->ar_request_ctx, ohci,
OHCI1394_AsReqRcvContextControlSet);
@ -1801,11 +1834,6 @@ pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
context_init(&ohci->at_response_ctx, ohci, AT_BUFFER_SIZE,
OHCI1394_AsRspTrContextControlSet, handle_at_packet);
reg_write(ohci, OHCI1394_ATRetries,
OHCI1394_MAX_AT_REQ_RETRIES |
(OHCI1394_MAX_AT_RESP_RETRIES << 4) |
(OHCI1394_MAX_PHYS_RESP_RETRIES << 8));
reg_write(ohci, OHCI1394_IsoRecvIntMaskSet, ~0);
ohci->it_context_mask = reg_read(ohci, OHCI1394_IsoRecvIntMaskSet);
reg_write(ohci, OHCI1394_IsoRecvIntMaskClear, ~0);
@ -1835,18 +1863,6 @@ pci_probe(struct pci_dev *dev, const struct pci_device_id *ent)
goto fail_registers;
}
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);
reg_write(ohci, OHCI1394_IntMaskSet,
OHCI1394_selfIDComplete |
OHCI1394_RQPkt | OHCI1394_RSPkt |
OHCI1394_reqTxComplete | OHCI1394_respTxComplete |
OHCI1394_isochRx | OHCI1394_isochTx |
OHCI1394_masterIntEnable |
OHCI1394_cycle64Seconds);
bus_options = reg_read(ohci, OHCI1394_BusOptions);
max_receive = (bus_options >> 12) & 0xf;
link_speed = bus_options & 0x7;
@ -1908,6 +1924,45 @@ static void pci_remove(struct pci_dev *dev)
fw_notify("Removed fw-ohci device.\n");
}
#ifdef CONFIG_PM
static int pci_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct fw_ohci *ohci = pci_get_drvdata(pdev);
int err;
software_reset(ohci);
free_irq(pdev->irq, ohci);
err = pci_save_state(pdev);
if (err) {
fw_error("pci_save_state failed with %d", err);
return err;
}
err = pci_set_power_state(pdev, pci_choose_state(pdev, state));
if (err) {
fw_error("pci_set_power_state failed with %d", err);
return err;
}
return 0;
}
static int pci_resume(struct pci_dev *pdev)
{
struct fw_ohci *ohci = pci_get_drvdata(pdev);
int err;
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
err = pci_enable_device(pdev);
if (err) {
fw_error("pci_enable_device failed with %d", err);
return err;
}
return ohci_enable(&ohci->card, ohci->config_rom, CONFIG_ROM_SIZE);
}
#endif
static struct pci_device_id pci_table[] = {
{ PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_FIREWIRE_OHCI, ~0) },
{ }
@ -1920,6 +1975,10 @@ static struct pci_driver fw_ohci_pci_driver = {
.id_table = pci_table,
.probe = pci_probe,
.remove = pci_remove,
#ifdef CONFIG_PM
.resume = pci_resume,
.suspend = pci_suspend,
#endif
};
MODULE_AUTHOR("Kristian Hoegsberg <krh@bitplanet.net>");

53
drivers/firewire/fw-sbp2.c
View File

@ -1108,6 +1108,58 @@ static int sbp2_scsi_abort(struct scsi_cmnd *cmd)
return SUCCESS;
}
/*
* Format of /sys/bus/scsi/devices/.../ieee1394_id:
* u64 EUI-64 : u24 directory_ID : u16 LUN (all printed in hexadecimal)
*
* This is the concatenation of target port identifier and logical unit
* identifier as per SAM-2...SAM-4 annex A.
*/
static ssize_t
sbp2_sysfs_ieee1394_id_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct scsi_device *sdev = to_scsi_device(dev);
struct sbp2_device *sd;
struct fw_unit *unit;
struct fw_device *device;
u32 directory_id;
struct fw_csr_iterator ci;
int key, value, lun;
if (!sdev)
return 0;
sd = (struct sbp2_device *)sdev->host->hostdata;
unit = sd->unit;
device = fw_device(unit->device.parent);
/* implicit directory ID */
directory_id = ((unit->directory - device->config_rom) * 4
+ CSR_CONFIG_ROM) & 0xffffff;
/* explicit directory ID, overrides implicit ID if present */
fw_csr_iterator_init(&ci, unit->directory);
while (fw_csr_iterator_next(&ci, &key, &value))
if (key == CSR_DIRECTORY_ID) {
directory_id = value;
break;
}
/* FIXME: Make this work for multi-lun devices. */
lun = 0;
return sprintf(buf, "%08x%08x:%06x:%04x\n",
device->config_rom[3], device->config_rom[4],
directory_id, lun);
}
static DEVICE_ATTR(ieee1394_id, S_IRUGO, sbp2_sysfs_ieee1394_id_show, NULL);
static struct device_attribute *sbp2_scsi_sysfs_attrs[] = {
&dev_attr_ieee1394_id,
NULL
};
static struct scsi_host_template scsi_driver_template = {
.module = THIS_MODULE,
.name = "SBP-2 IEEE-1394",
@ -1121,6 +1173,7 @@ static struct scsi_host_template scsi_driver_template = {
.use_clustering = ENABLE_CLUSTERING,
.cmd_per_lun = 1,
.can_queue = 1,
.sdev_attrs = sbp2_scsi_sysfs_attrs,
};
MODULE_AUTHOR("Kristian Hoegsberg <krh@bitplanet.net>");

7
drivers/ieee1394/nodemgr.c
View File

@ -976,7 +976,8 @@ static struct unit_directory *nodemgr_process_unit_directory
ud->ne = ne;
ud->ignore_driver = ignore_drivers;
ud->address = ud_kv->offset + CSR1212_CONFIG_ROM_SPACE_BASE;
ud->address = ud_kv->offset + CSR1212_REGISTER_SPACE_BASE;
ud->directory_id = ud->address & 0xffffff;
ud->ud_kv = ud_kv;
ud->id = (*id)++;
@ -1085,6 +1086,10 @@ static struct unit_directory *nodemgr_process_unit_directory
break;
case CSR1212_KV_ID_DIRECTORY_ID:
ud->directory_id = kv->value.immediate;
break;
default:
break;
}

1
drivers/ieee1394/nodemgr.h
View File

@ -75,6 +75,7 @@ struct unit_directory {
struct csr1212_keyval *model_name_kv;
quadlet_t specifier_id;
quadlet_t version;
quadlet_t directory_id;
unsigned int id;

31
drivers/ieee1394/sbp2.c
View File

@ -194,6 +194,27 @@ MODULE_PARM_DESC(workarounds, "Work around device bugs (default = 0"
", override internal blacklist = " __stringify(SBP2_WORKAROUND_OVERRIDE)
", or a combination)");
/*
* This influences the format of the sysfs attribute
* /sys/bus/scsi/devices/.../ieee1394_id.
*
* The default format is like in older kernels: %016Lx:%d:%d
* It contains the target's EUI-64, a number given to the logical unit by
* the ieee1394 driver's nodemgr (starting at 0), and the LUN.
*
* The long format is: %016Lx:%06x:%04x
* It contains the target's EUI-64, the unit directory's directory_ID as per
* IEEE 1212 clause 7.7.19, and the LUN. This format comes closest to the
* format of SBP(-3) target port and logical unit identifier as per SAM (SCSI
* Architecture Model) rev.2 to 4 annex A. Therefore and because it is
* independent of the implementation of the ieee1394 nodemgr, the longer format
* is recommended for future use.
*/
static int sbp2_long_sysfs_ieee1394_id;
module_param_named(long_ieee1394_id, sbp2_long_sysfs_ieee1394_id, bool, 0644);
MODULE_PARM_DESC(long_ieee1394_id, "8+3+2 bytes format of ieee1394_id in sysfs "
"(default = backwards-compatible = N, SAM-conforming = Y)");
#define SBP2_INFO(fmt, args...) HPSB_INFO("sbp2: "fmt, ## args)
#define SBP2_ERR(fmt, args...) HPSB_ERR("sbp2: "fmt, ## args)
@ -2100,8 +2121,14 @@ static ssize_t sbp2_sysfs_ieee1394_id_show(struct device *dev,
if (!(lu = (struct sbp2_lu *)sdev->host->hostdata[0]))
return 0;
return sprintf(buf, "%016Lx:%d:%d\n", (unsigned long long)lu->ne->guid,
lu->ud->id, ORB_SET_LUN(lu->lun));
if (sbp2_long_sysfs_ieee1394_id)
return sprintf(buf, "%016Lx:%06x:%04x\n",
(unsigned long long)lu->ne->guid,
lu->ud->directory_id, ORB_SET_LUN(lu->lun));
else
return sprintf(buf, "%016Lx:%d:%d\n",
(unsigned long long)lu->ne->guid,
lu->ud->id, ORB_SET_LUN(lu->lun));
}
MODULE_AUTHOR("Ben Collins <bcollins@debian.org>");

2
include/linux/Kbuild
View File

@ -62,6 +62,8 @@ header-y += fadvise.h
header-y += fd.h
header-y += fdreg.h
header-y += fib_rules.h
header-y += firewire-cdev.h
header-y += firewire-constants.h
header-y += fuse.h
header-y += genetlink.h
header-y += gen_stats.h

14
include/linux/firewire-cdev.h
View File

@ -198,13 +198,15 @@ struct fw_cdev_create_iso_context {
__u32 handle;
};
#define FW_CDEV_ISO_PAYLOAD_LENGTH(v) (v)
#define FW_CDEV_ISO_INTERRUPT (1 << 16)
#define FW_CDEV_ISO_SKIP (1 << 17)
#define FW_CDEV_ISO_TAG(v) ((v) << 18)
#define FW_CDEV_ISO_SY(v) ((v) << 20)
#define FW_CDEV_ISO_HEADER_LENGTH(v) ((v) << 24)
struct fw_cdev_iso_packet {
__u16 payload_length; /* Length of indirect payload. */
__u32 interrupt : 1; /* Generate interrupt on this packet */
__u32 skip : 1; /* Set to not send packet at all. */
__u32 tag : 2;
__u32 sy : 4;
__u32 header_length : 8; /* Length of immediate header. */
__u32 control;
__u32 header[0];
};