diff options
Diffstat (limited to 'drivers/ieee1394/sbp2.c')
| -rw-r--r-- | drivers/ieee1394/sbp2.c | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/drivers/ieee1394/sbp2.c b/drivers/ieee1394/sbp2.c index 2b6d9a0fa737..187e26f0485d 100644 --- a/drivers/ieee1394/sbp2.c +++ b/drivers/ieee1394/sbp2.c @@ -29,13 +29,27 @@ * driver. It also registers as a SCSI lower-level driver in order to accept * SCSI commands for transport using SBP-2. * - * You may access any attached SBP-2 storage devices as if they were SCSI - * devices (e.g. mount /dev/sda1, fdisk, mkfs, etc.). + * You may access any attached SBP-2 (usually storage devices) as regular + * SCSI devices. E.g. mount /dev/sda1, fdisk, mkfs, etc.. * - * Current Issues: + * See http://www.t10.org/drafts.htm#sbp2 for the final draft of the SBP-2 + * specification and for where to purchase the official standard. * - * - Error Handling: SCSI aborts and bus reset requests are handled somewhat - * but the code needs additional debugging. + * TODO: + * - look into possible improvements of the SCSI error handlers + * - handle Unit_Characteristics.mgt_ORB_timeout and .ORB_size + * - handle Logical_Unit_Number.ordered + * - handle src == 1 in status blocks + * - reimplement the DMA mapping in absence of physical DMA so that + * bus_to_virt is no longer required + * - debug the handling of absent physical DMA + * - replace CONFIG_IEEE1394_SBP2_PHYS_DMA by automatic detection + * (this is easy but depends on the previous two TODO items) + * - make the parameter serialize_io configurable per device + * - move all requests to fetch agent registers into non-atomic context, + * replace all usages of sbp2util_node_write_no_wait by true transactions + * - convert to generic DMA mapping API to eliminate dependency on PCI + * Grep for inline FIXME comments below. */ #include <linux/blkdev.h> @@ -107,8 +121,6 @@ MODULE_PARM_DESC(max_speed, "Force max speed " * Set serialize_io to 1 if you'd like only one scsi command sent * down to us at a time (debugging). This might be necessary for very * badly behaved sbp2 devices. - * - * TODO: Make this configurable per device. */ static int sbp2_serialize_io = 1; module_param_named(serialize_io, sbp2_serialize_io, int, 0444); |