aboutsummaryrefslogtreecommitdiff
path: root/drivers/firewire/fw-sbp2.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/firewire/fw-sbp2.c')
-rw-r--r--drivers/firewire/fw-sbp2.c86
1 files changed, 63 insertions, 23 deletions
diff --git a/drivers/firewire/fw-sbp2.c b/drivers/firewire/fw-sbp2.c
index 5259491580f..62b4e47d0cc 100644
--- a/drivers/firewire/fw-sbp2.c
+++ b/drivers/firewire/fw-sbp2.c
@@ -122,7 +122,6 @@ static const char sbp2_driver_name[] = "sbp2";
struct sbp2_logical_unit {
struct sbp2_target *tgt;
struct list_head link;
- struct scsi_device *sdev;
struct fw_address_handler address_handler;
struct list_head orb_list;
@@ -139,6 +138,7 @@ struct sbp2_logical_unit {
int generation;
int retries;
struct delayed_work work;
+ bool has_sdev;
bool blocked;
};
@@ -173,6 +173,7 @@ struct sbp2_target {
#define SBP2_ORB_TIMEOUT 2000U /* Timeout in ms */
#define SBP2_ORB_NULL 0x80000000
#define SBP2_MAX_SG_ELEMENT_LENGTH 0xf000
+#define SBP2_RETRY_LIMIT 0xf /* 15 retries */
#define SBP2_DIRECTION_TO_MEDIA 0x0
#define SBP2_DIRECTION_FROM_MEDIA 0x1
@@ -330,6 +331,11 @@ static const struct {
.model = ~0,
.workarounds = SBP2_WORKAROUND_128K_MAX_TRANS,
},
+ /* Datafab MD2-FW2 with Symbios/LSILogic SYM13FW500 bridge */ {
+ .firmware_revision = 0x002600,
+ .model = ~0,
+ .workarounds = SBP2_WORKAROUND_128K_MAX_TRANS,
+ },
/*
* There are iPods (2nd gen, 3rd gen) with model_id == 0, but
@@ -751,20 +757,34 @@ static void sbp2_unblock(struct sbp2_target *tgt)
scsi_unblock_requests(shost);
}
+static int sbp2_lun2int(u16 lun)
+{
+ struct scsi_lun eight_bytes_lun;
+
+ memset(&eight_bytes_lun, 0, sizeof(eight_bytes_lun));
+ eight_bytes_lun.scsi_lun[0] = (lun >> 8) & 0xff;
+ eight_bytes_lun.scsi_lun[1] = lun & 0xff;
+
+ return scsilun_to_int(&eight_bytes_lun);
+}
+
static void sbp2_release_target(struct kref *kref)
{
struct sbp2_target *tgt = container_of(kref, struct sbp2_target, kref);
struct sbp2_logical_unit *lu, *next;
struct Scsi_Host *shost =
container_of((void *)tgt, struct Scsi_Host, hostdata[0]);
+ struct scsi_device *sdev;
+ struct fw_device *device = fw_device(tgt->unit->device.parent);
/* prevent deadlocks */
sbp2_unblock(tgt);
list_for_each_entry_safe(lu, next, &tgt->lu_list, link) {
- if (lu->sdev) {
- scsi_remove_device(lu->sdev);
- scsi_device_put(lu->sdev);
+ sdev = scsi_device_lookup(shost, 0, 0, sbp2_lun2int(lu->lun));
+ if (sdev) {
+ scsi_remove_device(sdev);
+ scsi_device_put(sdev);
}
sbp2_send_management_orb(lu, tgt->node_id, lu->generation,
SBP2_LOGOUT_REQUEST, lu->login_id, NULL);
@@ -778,6 +798,7 @@ static void sbp2_release_target(struct kref *kref)
put_device(&tgt->unit->device);
scsi_host_put(shost);
+ fw_device_put(device);
}
static struct workqueue_struct *sbp2_wq;
@@ -797,6 +818,30 @@ static void sbp2_target_put(struct sbp2_target *tgt)
kref_put(&tgt->kref, sbp2_release_target);
}
+static void
+complete_set_busy_timeout(struct fw_card *card, int rcode,
+ void *payload, size_t length, void *done)
+{
+ complete(done);
+}
+
+static void sbp2_set_busy_timeout(struct sbp2_logical_unit *lu)
+{
+ struct fw_device *device = fw_device(lu->tgt->unit->device.parent);
+ DECLARE_COMPLETION_ONSTACK(done);
+ struct fw_transaction t;
+ static __be32 busy_timeout;
+
+ /* FIXME: we should try to set dual-phase cycle_limit too */
+ busy_timeout = cpu_to_be32(SBP2_RETRY_LIMIT);
+
+ fw_send_request(device->card, &t, TCODE_WRITE_QUADLET_REQUEST,
+ lu->tgt->node_id, lu->generation, device->max_speed,
+ CSR_REGISTER_BASE + CSR_BUSY_TIMEOUT, &busy_timeout,
+ sizeof(busy_timeout), complete_set_busy_timeout, &done);
+ wait_for_completion(&done);
+}
+
static void sbp2_reconnect(struct work_struct *work);
static void sbp2_login(struct work_struct *work)
@@ -807,7 +852,6 @@ static void sbp2_login(struct work_struct *work)
struct fw_device *device = fw_device(tgt->unit->device.parent);
struct Scsi_Host *shost;
struct scsi_device *sdev;
- struct scsi_lun eight_bytes_lun;
struct sbp2_login_response response;
int generation, node_id, local_node_id;
@@ -820,7 +864,7 @@ static void sbp2_login(struct work_struct *work)
local_node_id = device->card->node_id;
/* If this is a re-login attempt, log out, or we might be rejected. */
- if (lu->sdev)
+ if (lu->has_sdev)
sbp2_send_management_orb(lu, device->node_id, generation,
SBP2_LOGOUT_REQUEST, lu->login_id, NULL);
@@ -850,16 +894,14 @@ static void sbp2_login(struct work_struct *work)
fw_notify("%s: logged in to LUN %04x (%d retries)\n",
tgt->bus_id, lu->lun, lu->retries);
-#if 0
- /* FIXME: The linux1394 sbp2 does this last step. */
- sbp2_set_busy_timeout(scsi_id);
-#endif
+ /* set appropriate retry limit(s) in BUSY_TIMEOUT register */
+ sbp2_set_busy_timeout(lu);
PREPARE_DELAYED_WORK(&lu->work, sbp2_reconnect);
sbp2_agent_reset(lu);
/* This was a re-login. */
- if (lu->sdev) {
+ if (lu->has_sdev) {
sbp2_cancel_orbs(lu);
sbp2_conditionally_unblock(lu);
goto out;
@@ -868,13 +910,8 @@ static void sbp2_login(struct work_struct *work)
if (lu->tgt->workarounds & SBP2_WORKAROUND_DELAY_INQUIRY)
ssleep(SBP2_INQUIRY_DELAY);
- memset(&eight_bytes_lun, 0, sizeof(eight_bytes_lun));
- eight_bytes_lun.scsi_lun[0] = (lu->lun >> 8) & 0xff;
- eight_bytes_lun.scsi_lun[1] = lu->lun & 0xff;
shost = container_of((void *)tgt, struct Scsi_Host, hostdata[0]);
-
- sdev = __scsi_add_device(shost, 0, 0,
- scsilun_to_int(&eight_bytes_lun), lu);
+ sdev = __scsi_add_device(shost, 0, 0, sbp2_lun2int(lu->lun), lu);
/*
* FIXME: We are unable to perform reconnects while in sbp2_login().
* Therefore __scsi_add_device() will get into trouble if a bus reset
@@ -896,7 +933,8 @@ static void sbp2_login(struct work_struct *work)
}
/* No error during __scsi_add_device() */
- lu->sdev = sdev;
+ lu->has_sdev = true;
+ scsi_device_put(sdev);
sbp2_allow_block(lu);
goto out;
@@ -934,11 +972,11 @@ static int sbp2_add_logical_unit(struct sbp2_target *tgt, int lun_entry)
return -ENOMEM;
}
- lu->tgt = tgt;
- lu->sdev = NULL;
- lu->lun = lun_entry & 0xffff;
- lu->retries = 0;
- lu->blocked = false;
+ lu->tgt = tgt;
+ lu->lun = lun_entry & 0xffff;
+ lu->retries = 0;
+ lu->has_sdev = false;
+ lu->blocked = false;
++tgt->dont_block;
INIT_LIST_HEAD(&lu->orb_list);
INIT_DELAYED_WORK(&lu->work, sbp2_login);
@@ -1080,6 +1118,8 @@ static int sbp2_probe(struct device *dev)
if (scsi_add_host(shost, &unit->device) < 0)
goto fail_shost_put;
+ fw_device_get(device);
+
/* Initialize to values that won't match anything in our table. */
firmware_revision = 0xff000000;
model = 0xff000000;
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-18 21:40:48 +0000