2012-01-26 18:17:21 +00:00
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/*-
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Bring in LSI's latest mps(4) 6Gb SAS and WarpDrive driver, version
14.00.00.01-fbsd.
Their description of the changes is as follows:
1. Copyright contents has been changed in all respective .c
and .h files
2. Support for WRITE12 and READ12 for direct-io (warpdrive only)
has been added.
3. Driver has added checks to see if Drive has READ_CAP_16
support before sending it down to the device.
If SPC3_SID_PROTECT flag is set in the inquiry data, the
device supports protection information, and must support
the 16 byte read capacity command, otherwise continue without
sending read cap 16. This will optimize driver performance,
since it will not send READ_CAP_16 to the drive which does
not have support of READ_CAP_16.
4. With new approach, "MPTIOCTL_RESET_ADAPTER" IOCTL will not
use DELAY() which is busy loop implementation.
It will use <msleep> (Better way to sleep without busy
loop). Also from the HBA reset code path and some other
places, DELAY() is replaced with msleep() or "pause()",
which is based on sleep/wakeup style calls. Driver use
msleep()/pause() instead of DELAY based on CAN_SLEEP/NO_SLEEP
flags to avoid busy loop which is not required all the
time.e.a
a. While driver is getting loaded, driver calls most of the
commands with NO_SLEEP.
b. When Driver is functional and it needs Reinit of HBA,
CAN_SLEEP flag is used.
5. <mpslsi> driver is not Endian safe. It will not work on Big
Endian machines like Sparc and PowerPC platforms because it
assumes it is running on a Little Endian machine.
Driver code is modified such way that it does not assume CPU
arch is Little Endian.
a. All places where Driver interacts from HBA to Host, it
converts Little Endian format to CPU format.
b. All places where Driver interacts from Host to HBA, it
converts CPU format to Little Endian.
6. Findout memory leaks in FreeBSD Driver and resolve those,
such as memory leak in targ's luns creation/deletion.
Also added additional checks to see memory allocation
success/fail.
7. Add loginfo prints as debug message, i.e. When FW sends any
loginfo, Driver should print those as debug message.
This will help for debugging purpose.
8. There is possibility to get config request timeout. Current
driver is able to detect config request timetout, but it does
not do anything on config_request timeout. Driver should
call mps_reinit() if any request_poll (which is called as
part of config_request) is time out.
9. cdb length check is required for 32 byte CDB. Add correct mpi
control value for 32 bit CDB as below while submitting SCSI IO
Request to controller.
mpi_control |= 4 << MPI2_SCSIIO_CONTROL_ADDCDBLEN_SHIFT;
10. Check the actual status of Message unit reset
(mps_message_unit_reset).Previously FreeBSD Driver just writes
MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET and never check the ack
(it just wait for 50 millisecond). So, Driver now check the
status of "MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET" after writing
it to the FW.
Now it also checking for whether doorbell ack uses msleep with
proper sleep flags, instead of <DELAY>.
11. Previously CAM does not detect Multi-Lun Devices. In order to
detect Multi-Lun Devices by CAM the driver needs following change
set:
a. There is "max_lun" field which Driver need to set based on
hw/fw support. Currently LSI released driver does not set
this field.
b. Default of "max_lun" should not be 0 in OS, but it is
currently set to 0 in CAM layer.
c. Export max_lun capacity to 255
12. Driver will not reset target info after port enable complete and
also do Device removal when Device remove from FW. The detail
description is as follows
a. When Driver receive WD PD add events, it will add all
information in driver local data structure.
b. Only for WD, we have below checks after port enable
completes, where driver clear off all information retrieved
at #1.
if ((sc->WD_available &&
(sc->WD_hide_expose == MPS_WD_HIDE_ALWAYS)) ||
(sc->WD_valid_config && (sc->WD_hide_expose ==
MPS_WD_HIDE_IF_VOLUME)) {
// clear off target data structure.
}
It is mainly not to attach PDs to OS.
FreeBSD does bus rescan as older Parallel scsi style. So Driver
needs to handle which Drive is visible to OS. That is a reason
we have to clear off targ information for PDs.
Again, above logic was implemented long time ago. Similar concept
we have for non-wd also. For that, LSI have introduced different
logic to hide PDs.
Eventually, because of above gap, when Phy goes offline, we
observe below failure. That is what Driver is not doing complete
removal of device with FW. (which was pointed by Scott)
Apr 5 02:39:24 Freebsd7 kernel: mpslsi0: mpssas_prepare_remove
Apr 5 02:39:24 Freebsd7 kernel: mpssas_prepare_remove 497 : invalid handle 0xe
Now Driver will not reset target info after port enable complete
and also will do Device removal when Device remove from FW.
13. Returning "CAM_SEL_TIMEOUT" instead of "CAM_TID_INVALID"
error code on request to the Target IDs that have no devices
conected at that moment. As if "CAM_TID_INVALID" error code
is returned to the CAM Layaer then it results in a huge chain
of errors in verbose kernel messages on boot and every
hot-plug event.
Submitted by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
MFC after: 3 days
2012-06-28 03:48:54 +00:00
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* Copyright (c) 2011, 2012 LSI Corp.
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2012-01-26 18:17:21 +00:00
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* LSI MPT-Fusion Host Adapter FreeBSD
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*
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* $FreeBSD$
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*/
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struct mps_fw_event_work;
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struct mpssas_lun {
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SLIST_ENTRY(mpssas_lun) lun_link;
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lun_id_t lun_id;
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uint8_t eedp_formatted;
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uint32_t eedp_block_size;
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};
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struct mpssas_target {
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uint16_t handle;
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uint8_t linkrate;
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uint64_t devname;
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uint32_t devinfo;
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uint16_t encl_handle;
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uint16_t encl_slot;
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uint8_t flags;
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#define MPSSAS_TARGET_INABORT (1 << 0)
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#define MPSSAS_TARGET_INRESET (1 << 1)
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#define MPSSAS_TARGET_INDIAGRESET (1 << 2)
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#define MPSSAS_TARGET_INREMOVAL (1 << 3)
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2012-02-09 00:16:12 +00:00
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#define MPS_TARGET_FLAGS_RAID_COMPONENT (1 << 4)
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#define MPS_TARGET_FLAGS_VOLUME (1 << 5)
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2012-01-26 18:17:21 +00:00
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#define MPSSAS_TARGET_INRECOVERY (MPSSAS_TARGET_INABORT | \
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MPSSAS_TARGET_INRESET | MPSSAS_TARGET_INCHIPRESET)
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2012-02-09 00:16:12 +00:00
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2012-01-26 18:17:21 +00:00
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#define MPSSAS_TARGET_ADD (1 << 29)
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#define MPSSAS_TARGET_REMOVE (1 << 30)
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uint16_t tid;
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SLIST_HEAD(, mpssas_lun) luns;
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TAILQ_HEAD(, mps_command) commands;
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struct mps_command *tm;
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TAILQ_HEAD(, mps_command) timedout_commands;
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uint16_t exp_dev_handle;
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uint16_t phy_num;
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uint64_t sasaddr;
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uint16_t parent_handle;
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uint64_t parent_sasaddr;
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uint32_t parent_devinfo;
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struct sysctl_ctx_list sysctl_ctx;
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struct sysctl_oid *sysctl_tree;
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TAILQ_ENTRY(mpssas_target) sysctl_link;
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uint64_t issued;
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uint64_t completed;
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unsigned int outstanding;
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unsigned int timeouts;
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unsigned int aborts;
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unsigned int logical_unit_resets;
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unsigned int target_resets;
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};
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struct mpssas_softc {
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struct mps_softc *sc;
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u_int flags;
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#define MPSSAS_IN_DISCOVERY (1 << 0)
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#define MPSSAS_IN_STARTUP (1 << 1)
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#define MPSSAS_DISCOVERY_TIMEOUT_PENDING (1 << 2)
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#define MPSSAS_QUEUE_FROZEN (1 << 3)
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#define MPSSAS_SHUTDOWN (1 << 4)
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#define MPSSAS_SCANTHREAD (1 << 5)
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struct mpssas_target *targets;
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struct cam_devq *devq;
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struct cam_sim *sim;
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struct cam_path *path;
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struct intr_config_hook sas_ich;
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struct callout discovery_callout;
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u_int discovery_timeouts;
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struct mps_event_handle *mpssas_eh;
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u_int startup_refcount;
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u_int tm_count;
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struct proc *sysctl_proc;
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TAILQ_HEAD(, ccb_hdr) ccb_scanq;
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struct proc *rescan_thread;
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struct taskqueue *ev_tq;
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struct task ev_task;
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TAILQ_HEAD(, mps_fw_event_work) ev_queue;
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};
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MALLOC_DECLARE(M_MPSSAS);
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/*
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* Abstracted so that the driver can be backwards and forwards compatible
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* with future versions of CAM that will provide this functionality.
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*/
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#define MPS_SET_LUN(lun, ccblun) \
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mpssas_set_lun(lun, ccblun)
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static __inline int
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mpssas_set_lun(uint8_t *lun, u_int ccblun)
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{
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uint64_t *newlun;
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newlun = (uint64_t *)lun;
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*newlun = 0;
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if (ccblun <= 0xff) {
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/* Peripheral device address method, LUN is 0 to 255 */
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lun[1] = ccblun;
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} else if (ccblun <= 0x3fff) {
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/* Flat space address method, LUN is <= 16383 */
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scsi_ulto2b(ccblun, lun);
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lun[0] |= 0x40;
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} else if (ccblun <= 0xffffff) {
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/* Extended flat space address method, LUN is <= 16777215 */
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scsi_ulto3b(ccblun, &lun[1]);
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/* Extended Flat space address method */
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lun[0] = 0xc0;
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/* Length = 1, i.e. LUN is 3 bytes long */
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lun[0] |= 0x10;
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/* Extended Address Method */
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lun[0] |= 0x02;
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} else {
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return (EINVAL);
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}
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return (0);
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}
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#define MPS_SET_SINGLE_LUN(req, lun) \
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do { \
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bzero((req)->LUN, 8); \
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(req)->LUN[1] = lun; \
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} while(0)
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void mpssas_rescan_target(struct mps_softc *sc, struct mpssas_target *targ);
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void mpssas_discovery_end(struct mpssas_softc *sassc);
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void mpssas_startup_increment(struct mpssas_softc *sassc);
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void mpssas_startup_decrement(struct mpssas_softc *sassc);
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struct mps_command * mpssas_alloc_tm(struct mps_softc *sc);
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void mpssas_free_tm(struct mps_softc *sc, struct mps_command *tm);
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void mpssas_firmware_event_work(void *arg, int pending);
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