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2428 lines
82 KiB
2428 lines
82 KiB
/* |
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3w-xxxx.c -- 3ware Storage Controller device driver for Linux. |
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|
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Written By: Adam Radford <[email protected]> |
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Modifications By: Joel Jacobson <[email protected]> |
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Arnaldo Carvalho de Melo <[email protected]> |
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Brad Strand <[email protected]> |
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Copyright (C) 1999-2010 3ware Inc. |
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Kernel compatibility By: Andre Hedrick <[email protected]> |
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Non-Copyright (C) 2000 Andre Hedrick <[email protected]> |
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Further tiny build fixes and trivial hoovering Alan Cox |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; version 2 of the License. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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NO WARRANTY |
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THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR |
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CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT |
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LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, |
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MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is |
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solely responsible for determining the appropriateness of using and |
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distributing the Program and assumes all risks associated with its |
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exercise of rights under this Agreement, including but not limited to |
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the risks and costs of program errors, damage to or loss of data, |
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programs or equipment, and unavailability or interruption of operations. |
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|
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DISCLAIMER OF LIABILITY |
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NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY |
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND |
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR |
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TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE |
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USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED |
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HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES |
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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Bugs/Comments/Suggestions should be mailed to: |
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[email protected] |
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History |
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------- |
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0.1.000 - Initial release. |
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0.4.000 - Added support for Asynchronous Event Notification through |
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ioctls for 3DM. |
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1.0.000 - Added DPO & FUA bit support for WRITE_10 & WRITE_6 cdb |
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to disable drive write-cache before writes. |
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1.1.000 - Fixed performance bug with DPO & FUA not existing for WRITE_6. |
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1.2.000 - Added support for clean shutdown notification/feature table. |
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1.02.00.001 - Added support for full command packet posts through ioctls |
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for 3DM. |
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Bug fix so hot spare drives don't show up. |
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1.02.00.002 - Fix bug with tw_setfeature() call that caused oops on some |
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systems. |
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08/21/00 - release previously allocated resources on failure at |
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tw_allocate_memory (acme) |
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1.02.00.003 - Fix tw_interrupt() to report error to scsi layer when |
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controller status is non-zero. |
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Added handling of request_sense opcode. |
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Fix possible null pointer dereference in |
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tw_reset_device_extension() |
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1.02.00.004 - Add support for device id of 3ware 7000 series controllers. |
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Make tw_setfeature() call with interrupts disabled. |
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Register interrupt handler before enabling interrupts. |
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Clear attention interrupt before draining aen queue. |
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1.02.00.005 - Allocate bounce buffers and custom queue depth for raid5 for |
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6000 and 5000 series controllers. |
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Reduce polling mdelays causing problems on some systems. |
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Fix use_sg = 1 calculation bug. |
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Check for scsi_register returning NULL. |
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Add aen count to /proc/scsi/3w-xxxx. |
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Remove aen code unit masking in tw_aen_complete(). |
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1.02.00.006 - Remove unit from printk in tw_scsi_eh_abort(), causing |
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possible oops. |
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Fix possible null pointer dereference in tw_scsi_queue() |
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if done function pointer was invalid. |
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1.02.00.007 - Fix possible null pointer dereferences in tw_ioctl(). |
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Remove check for invalid done function pointer from |
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tw_scsi_queue(). |
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1.02.00.008 - Set max sectors per io to TW_MAX_SECTORS in tw_findcards(). |
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Add tw_decode_error() for printing readable error messages. |
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Print some useful information on certain aen codes. |
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Add tw_decode_bits() for interpreting status register output. |
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Make scsi_set_pci_device() for kernels >= 2.4.4 |
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Fix bug where aen's could be lost before a reset. |
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Re-add spinlocks in tw_scsi_detect(). |
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Fix possible null pointer dereference in tw_aen_drain_queue() |
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during initialization. |
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Clear pci parity errors during initialization and during io. |
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1.02.00.009 - Remove redundant increment in tw_state_request_start(). |
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Add ioctl support for direct ATA command passthru. |
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Add entire aen code string list. |
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1.02.00.010 - Cleanup queueing code, fix jbod thoughput. |
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Fix get_param for specific units. |
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1.02.00.011 - Fix bug in tw_aen_complete() where aen's could be lost. |
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Fix tw_aen_drain_queue() to display useful info at init. |
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Set tw_host->max_id for 12 port cards. |
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Add ioctl support for raw command packet post from userspace |
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with sglist fragments (parameter and io). |
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1.02.00.012 - Fix read capacity to under report by 1 sector to fix get |
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last sector ioctl. |
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1.02.00.013 - Fix bug where more AEN codes weren't coming out during |
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driver initialization. |
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Improved handling of PCI aborts. |
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1.02.00.014 - Fix bug in tw_findcards() where AEN code could be lost. |
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Increase timeout in tw_aen_drain_queue() to 30 seconds. |
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1.02.00.015 - Re-write raw command post with data ioctl method. |
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Remove raid5 bounce buffers for raid5 for 6XXX for kernel 2.5 |
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Add tw_map/unmap_scsi_sg/single_data() for kernel 2.5 |
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Replace io_request_lock with host_lock for kernel 2.5 |
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Set max_cmd_len to 16 for 3dm for kernel 2.5 |
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1.02.00.016 - Set host->max_sectors back up to 256. |
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1.02.00.017 - Modified pci parity error handling/clearing from config space |
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during initialization. |
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1.02.00.018 - Better handling of request sense opcode and sense information |
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for failed commands. Add tw_decode_sense(). |
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Replace all mdelay()'s with scsi_sleep(). |
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1.02.00.019 - Revert mdelay's and scsi_sleep's, this caused problems on |
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some SMP systems. |
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1.02.00.020 - Add pci_set_dma_mask(), rewrite kmalloc()/virt_to_bus() to |
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pci_alloc/free_consistent(). |
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Better alignment checking in tw_allocate_memory(). |
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Cleanup tw_initialize_device_extension(). |
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1.02.00.021 - Bump cmd_per_lun in SHT to 255 for better jbod performance. |
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Improve handling of errors in tw_interrupt(). |
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Add handling/clearing of controller queue error. |
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Empty stale responses before draining aen queue. |
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Fix tw_scsi_eh_abort() to not reset on every io abort. |
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Set can_queue in SHT to 255 to prevent hang from AEN. |
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1.02.00.022 - Fix possible null pointer dereference in tw_scsi_release(). |
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1.02.00.023 - Fix bug in tw_aen_drain_queue() where unit # was always zero. |
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1.02.00.024 - Add severity levels to AEN strings. |
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1.02.00.025 - Fix command interrupt spurious error messages. |
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Fix bug in raw command post with data ioctl method. |
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Fix bug where rollcall sometimes failed with cable errors. |
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Print unit # on all command timeouts. |
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1.02.00.026 - Fix possible infinite retry bug with power glitch induced |
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drive timeouts. |
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Cleanup some AEN severity levels. |
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1.02.00.027 - Add drive not supported AEN code for SATA controllers. |
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Remove spurious unknown ioctl error message. |
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1.02.00.028 - Fix bug where multiple controllers with no units were the |
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same card number. |
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Fix bug where cards were being shut down more than once. |
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1.02.00.029 - Add missing pci_free_consistent() in tw_allocate_memory(). |
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Replace pci_map_single() with pci_map_page() for highmem. |
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Check for tw_setfeature() failure. |
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1.02.00.030 - Make driver 64-bit clean. |
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1.02.00.031 - Cleanup polling timeouts/routines in several places. |
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Add support for mode sense opcode. |
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Add support for cache mode page. |
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Add support for synchronize cache opcode. |
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1.02.00.032 - Fix small multicard rollcall bug. |
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Make driver stay loaded with no units for hot add/swap. |
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Add support for "twe" character device for ioctls. |
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Clean up request_id queueing code. |
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Fix tw_scsi_queue() spinlocks. |
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1.02.00.033 - Fix tw_aen_complete() to not queue 'queue empty' AEN's. |
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Initialize queues correctly when loading with no valid units. |
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1.02.00.034 - Fix tw_decode_bits() to handle multiple errors. |
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Add support for user configurable cmd_per_lun. |
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Add support for sht->slave_configure(). |
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1.02.00.035 - Improve tw_allocate_memory() memory allocation. |
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Fix tw_chrdev_ioctl() to sleep correctly. |
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1.02.00.036 - Increase character ioctl timeout to 60 seconds. |
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1.02.00.037 - Fix tw_ioctl() to handle all non-data ATA passthru cmds |
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for 'smartmontools' support. |
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1.26.00.038 - Roll driver minor version to 26 to denote kernel 2.6. |
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Add support for cmds_per_lun module parameter. |
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1.26.00.039 - Fix bug in tw_chrdev_ioctl() polling code. |
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Fix data_buffer_length usage in tw_chrdev_ioctl(). |
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Update contact information. |
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1.26.02.000 - Convert driver to pci_driver format. |
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1.26.02.001 - Increase max ioctl buffer size to 512 sectors. |
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Make tw_scsi_queue() return 0 for 'Unknown scsi opcode'. |
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Fix tw_remove() to free irq handler/unregister_chrdev() |
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before shutting down card. |
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Change to new 'change_queue_depth' api. |
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Fix 'handled=1' ISR usage, remove bogus IRQ check. |
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1.26.02.002 - Free irq handler in __tw_shutdown(). |
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Turn on RCD bit for caching mode page. |
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Serialize reset code. |
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1.26.02.003 - Force 60 second timeout default. |
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*/ |
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#include <linux/module.h> |
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#include <linux/reboot.h> |
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#include <linux/spinlock.h> |
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#include <linux/interrupt.h> |
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#include <linux/moduleparam.h> |
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#include <linux/errno.h> |
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#include <linux/types.h> |
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#include <linux/delay.h> |
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#include <linux/gfp.h> |
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#include <linux/pci.h> |
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#include <linux/time.h> |
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#include <linux/mutex.h> |
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#include <asm/io.h> |
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#include <asm/irq.h> |
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#include <linux/uaccess.h> |
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#include <scsi/scsi.h> |
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#include <scsi/scsi_host.h> |
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#include <scsi/scsi_tcq.h> |
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#include <scsi/scsi_cmnd.h> |
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#include <scsi/scsi_eh.h> |
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#include "3w-xxxx.h" |
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|
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/* Globals */ |
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#define TW_DRIVER_VERSION "1.26.02.003" |
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static DEFINE_MUTEX(tw_mutex); |
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static TW_Device_Extension *tw_device_extension_list[TW_MAX_SLOT]; |
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static int tw_device_extension_count = 0; |
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static int twe_major = -1; |
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|
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/* Module parameters */ |
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MODULE_AUTHOR("LSI"); |
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MODULE_DESCRIPTION("3ware Storage Controller Linux Driver"); |
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MODULE_LICENSE("GPL"); |
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MODULE_VERSION(TW_DRIVER_VERSION); |
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|
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/* Function prototypes */ |
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static int tw_reset_device_extension(TW_Device_Extension *tw_dev); |
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/* Functions */ |
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/* This function will check the status register for unexpected bits */ |
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static int tw_check_bits(u32 status_reg_value) |
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{ |
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if ((status_reg_value & TW_STATUS_EXPECTED_BITS) != TW_STATUS_EXPECTED_BITS) { |
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dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): No expected bits (0x%x).\n", status_reg_value); |
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return 1; |
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} |
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if ((status_reg_value & TW_STATUS_UNEXPECTED_BITS) != 0) { |
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dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): Found unexpected bits (0x%x).\n", status_reg_value); |
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return 1; |
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} |
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return 0; |
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} /* End tw_check_bits() */ |
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/* This function will print readable messages from status register errors */ |
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static int tw_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value, int print_host) |
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{ |
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char host[16]; |
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dprintk(KERN_WARNING "3w-xxxx: tw_decode_bits()\n"); |
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if (print_host) |
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sprintf(host, " scsi%d:", tw_dev->host->host_no); |
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else |
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host[0] = '\0'; |
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if (status_reg_value & TW_STATUS_PCI_PARITY_ERROR) { |
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printk(KERN_WARNING "3w-xxxx:%s PCI Parity Error: clearing.\n", host); |
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outl(TW_CONTROL_CLEAR_PARITY_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); |
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} |
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if (status_reg_value & TW_STATUS_PCI_ABORT) { |
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printk(KERN_WARNING "3w-xxxx:%s PCI Abort: clearing.\n", host); |
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outl(TW_CONTROL_CLEAR_PCI_ABORT, TW_CONTROL_REG_ADDR(tw_dev)); |
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pci_write_config_word(tw_dev->tw_pci_dev, PCI_STATUS, TW_PCI_CLEAR_PCI_ABORT); |
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} |
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if (status_reg_value & TW_STATUS_QUEUE_ERROR) { |
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printk(KERN_WARNING "3w-xxxx:%s Controller Queue Error: clearing.\n", host); |
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outl(TW_CONTROL_CLEAR_QUEUE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); |
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} |
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|
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if (status_reg_value & TW_STATUS_SBUF_WRITE_ERROR) { |
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printk(KERN_WARNING "3w-xxxx:%s SBUF Write Error: clearing.\n", host); |
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outl(TW_CONTROL_CLEAR_SBUF_WRITE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); |
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} |
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if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) { |
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if (tw_dev->reset_print == 0) { |
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printk(KERN_WARNING "3w-xxxx:%s Microcontroller Error: clearing.\n", host); |
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tw_dev->reset_print = 1; |
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} |
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return 1; |
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} |
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return 0; |
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} /* End tw_decode_bits() */ |
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/* This function will poll the status register for a flag */ |
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static int tw_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds) |
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{ |
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u32 status_reg_value; |
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unsigned long before; |
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int retval = 1; |
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status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
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before = jiffies; |
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if (tw_check_bits(status_reg_value)) |
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tw_decode_bits(tw_dev, status_reg_value, 0); |
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while ((status_reg_value & flag) != flag) { |
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status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
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if (tw_check_bits(status_reg_value)) |
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tw_decode_bits(tw_dev, status_reg_value, 0); |
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if (time_after(jiffies, before + HZ * seconds)) |
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goto out; |
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msleep(50); |
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} |
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retval = 0; |
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out: |
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return retval; |
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} /* End tw_poll_status() */ |
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/* This function will poll the status register for disappearance of a flag */ |
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static int tw_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds) |
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{ |
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u32 status_reg_value; |
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unsigned long before; |
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int retval = 1; |
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status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
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before = jiffies; |
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if (tw_check_bits(status_reg_value)) |
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tw_decode_bits(tw_dev, status_reg_value, 0); |
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while ((status_reg_value & flag) != 0) { |
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status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
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if (tw_check_bits(status_reg_value)) |
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tw_decode_bits(tw_dev, status_reg_value, 0); |
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if (time_after(jiffies, before + HZ * seconds)) |
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goto out; |
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msleep(50); |
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} |
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retval = 0; |
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out: |
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return retval; |
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} /* End tw_poll_status_gone() */ |
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|
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/* This function will attempt to post a command packet to the board */ |
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static int tw_post_command_packet(TW_Device_Extension *tw_dev, int request_id) |
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{ |
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u32 status_reg_value; |
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unsigned long command_que_value; |
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dprintk(KERN_NOTICE "3w-xxxx: tw_post_command_packet()\n"); |
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command_que_value = tw_dev->command_packet_physical_address[request_id]; |
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status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
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|
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if (tw_check_bits(status_reg_value)) { |
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dprintk(KERN_WARNING "3w-xxxx: tw_post_command_packet(): Unexpected bits.\n"); |
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tw_decode_bits(tw_dev, status_reg_value, 1); |
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} |
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if ((status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL) == 0) { |
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/* We successfully posted the command packet */ |
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outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); |
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tw_dev->state[request_id] = TW_S_POSTED; |
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tw_dev->posted_request_count++; |
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if (tw_dev->posted_request_count > tw_dev->max_posted_request_count) { |
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tw_dev->max_posted_request_count = tw_dev->posted_request_count; |
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} |
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} else { |
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/* Couldn't post the command packet, so we do it in the isr */ |
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if (tw_dev->state[request_id] != TW_S_PENDING) { |
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tw_dev->state[request_id] = TW_S_PENDING; |
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tw_dev->pending_request_count++; |
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if (tw_dev->pending_request_count > tw_dev->max_pending_request_count) { |
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tw_dev->max_pending_request_count = tw_dev->pending_request_count; |
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} |
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tw_dev->pending_queue[tw_dev->pending_tail] = request_id; |
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if (tw_dev->pending_tail == TW_Q_LENGTH-1) { |
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tw_dev->pending_tail = TW_Q_START; |
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} else { |
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tw_dev->pending_tail = tw_dev->pending_tail + 1; |
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} |
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} |
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TW_UNMASK_COMMAND_INTERRUPT(tw_dev); |
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return 1; |
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} |
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return 0; |
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} /* End tw_post_command_packet() */ |
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|
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/* This function will return valid sense buffer information for failed cmds */ |
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static int tw_decode_sense(TW_Device_Extension *tw_dev, int request_id, int fill_sense) |
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{ |
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int i; |
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TW_Command *command; |
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|
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dprintk(KERN_WARNING "3w-xxxx: tw_decode_sense()\n"); |
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command = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
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|
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printk(KERN_WARNING "3w-xxxx: scsi%d: Command failed: status = 0x%x, flags = 0x%x, unit #%d.\n", tw_dev->host->host_no, command->status, command->flags, TW_UNIT_OUT(command->unit__hostid)); |
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|
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/* Attempt to return intelligent sense information */ |
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if (fill_sense) { |
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if ((command->status == 0xc7) || (command->status == 0xcb)) { |
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for (i = 0; i < ARRAY_SIZE(tw_sense_table); i++) { |
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if (command->flags == tw_sense_table[i][0]) { |
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|
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/* Valid bit and 'current errors' */ |
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tw_dev->srb[request_id]->sense_buffer[0] = (0x1 << 7 | 0x70); |
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|
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/* Sense key */ |
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tw_dev->srb[request_id]->sense_buffer[2] = tw_sense_table[i][1]; |
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|
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/* Additional sense length */ |
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tw_dev->srb[request_id]->sense_buffer[7] = 0xa; /* 10 bytes */ |
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|
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/* Additional sense code */ |
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tw_dev->srb[request_id]->sense_buffer[12] = tw_sense_table[i][2]; |
|
|
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/* Additional sense code qualifier */ |
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tw_dev->srb[request_id]->sense_buffer[13] = tw_sense_table[i][3]; |
|
|
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tw_dev->srb[request_id]->result = (DID_OK << 16) | SAM_STAT_CHECK_CONDITION; |
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return TW_ISR_DONT_RESULT; /* Special case for isr to not over-write result */ |
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} |
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} |
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} |
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|
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/* If no table match, error so we get a reset */ |
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return 1; |
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} |
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|
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return 0; |
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} /* End tw_decode_sense() */ |
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|
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/* This function will report controller error status */ |
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static int tw_check_errors(TW_Device_Extension *tw_dev) |
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{ |
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u32 status_reg_value; |
|
|
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status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
|
|
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if (TW_STATUS_ERRORS(status_reg_value) || tw_check_bits(status_reg_value)) { |
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tw_decode_bits(tw_dev, status_reg_value, 0); |
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return 1; |
|
} |
|
|
|
return 0; |
|
} /* End tw_check_errors() */ |
|
|
|
/* This function will empty the response que */ |
|
static void tw_empty_response_que(TW_Device_Extension *tw_dev) |
|
{ |
|
u32 status_reg_value; |
|
|
|
status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
|
|
|
while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { |
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inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
|
status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
|
} |
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} /* End tw_empty_response_que() */ |
|
|
|
/* This function will free a request_id */ |
|
static void tw_state_request_finish(TW_Device_Extension *tw_dev, int request_id) |
|
{ |
|
tw_dev->free_queue[tw_dev->free_tail] = request_id; |
|
tw_dev->state[request_id] = TW_S_FINISHED; |
|
tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH; |
|
} /* End tw_state_request_finish() */ |
|
|
|
/* This function will assign an available request_id */ |
|
static void tw_state_request_start(TW_Device_Extension *tw_dev, int *request_id) |
|
{ |
|
*request_id = tw_dev->free_queue[tw_dev->free_head]; |
|
tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH; |
|
tw_dev->state[*request_id] = TW_S_STARTED; |
|
} /* End tw_state_request_start() */ |
|
|
|
/* Show some statistics about the card */ |
|
static ssize_t tw_show_stats(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct Scsi_Host *host = class_to_shost(dev); |
|
TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
|
unsigned long flags = 0; |
|
ssize_t len; |
|
|
|
spin_lock_irqsave(tw_dev->host->host_lock, flags); |
|
len = snprintf(buf, PAGE_SIZE, "3w-xxxx Driver version: %s\n" |
|
"Current commands posted: %4d\n" |
|
"Max commands posted: %4d\n" |
|
"Current pending commands: %4d\n" |
|
"Max pending commands: %4d\n" |
|
"Last sgl length: %4d\n" |
|
"Max sgl length: %4d\n" |
|
"Last sector count: %4d\n" |
|
"Max sector count: %4d\n" |
|
"SCSI Host Resets: %4d\n" |
|
"AEN's: %4d\n", |
|
TW_DRIVER_VERSION, |
|
tw_dev->posted_request_count, |
|
tw_dev->max_posted_request_count, |
|
tw_dev->pending_request_count, |
|
tw_dev->max_pending_request_count, |
|
tw_dev->sgl_entries, |
|
tw_dev->max_sgl_entries, |
|
tw_dev->sector_count, |
|
tw_dev->max_sector_count, |
|
tw_dev->num_resets, |
|
tw_dev->aen_count); |
|
spin_unlock_irqrestore(tw_dev->host->host_lock, flags); |
|
return len; |
|
} /* End tw_show_stats() */ |
|
|
|
/* Create sysfs 'stats' entry */ |
|
static struct device_attribute tw_host_stats_attr = { |
|
.attr = { |
|
.name = "stats", |
|
.mode = S_IRUGO, |
|
}, |
|
.show = tw_show_stats |
|
}; |
|
|
|
/* Host attributes initializer */ |
|
static struct attribute *tw_host_attrs[] = { |
|
&tw_host_stats_attr.attr, |
|
NULL, |
|
}; |
|
|
|
ATTRIBUTE_GROUPS(tw_host); |
|
|
|
/* This function will read the aen queue from the isr */ |
|
static int tw_aen_read_queue(TW_Device_Extension *tw_dev, int request_id) |
|
{ |
|
TW_Command *command_packet; |
|
TW_Param *param; |
|
unsigned long command_que_value; |
|
u32 status_reg_value; |
|
unsigned long param_value = 0; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_aen_read_queue()\n"); |
|
|
|
status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
|
if (tw_check_bits(status_reg_value)) { |
|
dprintk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Unexpected bits.\n"); |
|
tw_decode_bits(tw_dev, status_reg_value, 1); |
|
return 1; |
|
} |
|
if (tw_dev->command_packet_virtual_address[request_id] == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad command packet virtual address.\n"); |
|
return 1; |
|
} |
|
command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
|
memset(command_packet, 0, sizeof(TW_Sector)); |
|
command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
|
command_packet->size = 4; |
|
command_packet->request_id = request_id; |
|
command_packet->status = 0; |
|
command_packet->flags = 0; |
|
command_packet->byte6.parameter_count = 1; |
|
command_que_value = tw_dev->command_packet_physical_address[request_id]; |
|
if (command_que_value == 0) { |
|
printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad command packet physical address.\n"); |
|
return 1; |
|
} |
|
/* Now setup the param */ |
|
if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad alignment virtual address.\n"); |
|
return 1; |
|
} |
|
param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
|
memset(param, 0, sizeof(TW_Sector)); |
|
param->table_id = 0x401; /* AEN table */ |
|
param->parameter_id = 2; /* Unit code */ |
|
param->parameter_size_bytes = 2; |
|
param_value = tw_dev->alignment_physical_address[request_id]; |
|
if (param_value == 0) { |
|
printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad alignment physical address.\n"); |
|
return 1; |
|
} |
|
command_packet->byte8.param.sgl[0].address = param_value; |
|
command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
|
|
|
/* Now post the command packet */ |
|
if ((status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL) == 0) { |
|
dprintk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Post succeeded.\n"); |
|
tw_dev->srb[request_id] = NULL; /* Flag internal command */ |
|
tw_dev->state[request_id] = TW_S_POSTED; |
|
outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); |
|
} else { |
|
printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Post failed, will retry.\n"); |
|
return 1; |
|
} |
|
|
|
return 0; |
|
} /* End tw_aen_read_queue() */ |
|
|
|
/* This function will complete an aen request from the isr */ |
|
static int tw_aen_complete(TW_Device_Extension *tw_dev, int request_id) |
|
{ |
|
TW_Param *param; |
|
unsigned short aen; |
|
int error = 0, table_max = 0; |
|
|
|
dprintk(KERN_WARNING "3w-xxxx: tw_aen_complete()\n"); |
|
if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_aen_complete(): Bad alignment virtual address.\n"); |
|
return 1; |
|
} |
|
param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
|
aen = *(unsigned short *)(param->data); |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_aen_complete(): Queue'd code 0x%x\n", aen); |
|
|
|
/* Print some useful info when certain aen codes come out */ |
|
if (aen == 0x0ff) { |
|
printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: INFO: AEN queue overflow.\n", tw_dev->host->host_no); |
|
} else { |
|
table_max = ARRAY_SIZE(tw_aen_string); |
|
if ((aen & 0x0ff) < table_max) { |
|
if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') { |
|
printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s%d.\n", tw_dev->host->host_no, tw_aen_string[aen & 0xff], aen >> 8); |
|
} else { |
|
if (aen != 0x0) |
|
printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s.\n", tw_dev->host->host_no, tw_aen_string[aen & 0xff]); |
|
} |
|
} else { |
|
printk(KERN_WARNING "3w-xxxx: scsi%d: Received AEN %d.\n", tw_dev->host->host_no, aen); |
|
} |
|
} |
|
if (aen != TW_AEN_QUEUE_EMPTY) { |
|
tw_dev->aen_count++; |
|
|
|
/* Now queue the code */ |
|
tw_dev->aen_queue[tw_dev->aen_tail] = aen; |
|
if (tw_dev->aen_tail == TW_Q_LENGTH - 1) { |
|
tw_dev->aen_tail = TW_Q_START; |
|
} else { |
|
tw_dev->aen_tail = tw_dev->aen_tail + 1; |
|
} |
|
if (tw_dev->aen_head == tw_dev->aen_tail) { |
|
if (tw_dev->aen_head == TW_Q_LENGTH - 1) { |
|
tw_dev->aen_head = TW_Q_START; |
|
} else { |
|
tw_dev->aen_head = tw_dev->aen_head + 1; |
|
} |
|
} |
|
|
|
error = tw_aen_read_queue(tw_dev, request_id); |
|
if (error) { |
|
printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing AEN.\n", tw_dev->host->host_no); |
|
tw_dev->state[request_id] = TW_S_COMPLETED; |
|
tw_state_request_finish(tw_dev, request_id); |
|
} |
|
} else { |
|
tw_dev->state[request_id] = TW_S_COMPLETED; |
|
tw_state_request_finish(tw_dev, request_id); |
|
} |
|
|
|
return 0; |
|
} /* End tw_aen_complete() */ |
|
|
|
/* This function will drain the aen queue after a soft reset */ |
|
static int tw_aen_drain_queue(TW_Device_Extension *tw_dev) |
|
{ |
|
TW_Command *command_packet; |
|
TW_Param *param; |
|
int request_id = 0; |
|
unsigned long command_que_value; |
|
unsigned long param_value; |
|
TW_Response_Queue response_queue; |
|
unsigned short aen; |
|
unsigned short aen_code; |
|
int finished = 0; |
|
int first_reset = 0; |
|
int queue = 0; |
|
int found = 0, table_max = 0; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_aen_drain_queue()\n"); |
|
|
|
if (tw_poll_status(tw_dev, TW_STATUS_ATTENTION_INTERRUPT | TW_STATUS_MICROCONTROLLER_READY, 30)) { |
|
dprintk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): No attention interrupt for card %d.\n", tw_device_extension_count); |
|
return 1; |
|
} |
|
TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); |
|
|
|
/* Empty response queue */ |
|
tw_empty_response_que(tw_dev); |
|
|
|
/* Initialize command packet */ |
|
if (tw_dev->command_packet_virtual_address[request_id] == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet virtual address.\n"); |
|
return 1; |
|
} |
|
command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
|
memset(command_packet, 0, sizeof(TW_Sector)); |
|
command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
|
command_packet->size = 4; |
|
command_packet->request_id = request_id; |
|
command_packet->status = 0; |
|
command_packet->flags = 0; |
|
command_packet->byte6.parameter_count = 1; |
|
command_que_value = tw_dev->command_packet_physical_address[request_id]; |
|
if (command_que_value == 0) { |
|
printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet physical address.\n"); |
|
return 1; |
|
} |
|
|
|
/* Now setup the param */ |
|
if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment virtual address.\n"); |
|
return 1; |
|
} |
|
param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
|
memset(param, 0, sizeof(TW_Sector)); |
|
param->table_id = 0x401; /* AEN table */ |
|
param->parameter_id = 2; /* Unit code */ |
|
param->parameter_size_bytes = 2; |
|
param_value = tw_dev->alignment_physical_address[request_id]; |
|
if (param_value == 0) { |
|
printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment physical address.\n"); |
|
return 1; |
|
} |
|
command_packet->byte8.param.sgl[0].address = param_value; |
|
command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
|
|
|
/* Now drain the controller's aen queue */ |
|
do { |
|
/* Post command packet */ |
|
outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); |
|
|
|
/* Now poll for completion */ |
|
if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) { |
|
response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
|
request_id = TW_RESID_OUT(response_queue.response_id); |
|
|
|
if (request_id != 0) { |
|
/* Unexpected request id */ |
|
printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Unexpected request id.\n"); |
|
return 1; |
|
} |
|
|
|
if (command_packet->status != 0) { |
|
if (command_packet->flags != TW_AEN_TABLE_UNDEFINED) { |
|
/* Bad response */ |
|
tw_decode_sense(tw_dev, request_id, 0); |
|
return 1; |
|
} else { |
|
/* We know this is a 3w-1x00, and doesn't support aen's */ |
|
return 0; |
|
} |
|
} |
|
|
|
/* Now check the aen */ |
|
aen = *(unsigned short *)(param->data); |
|
aen_code = (aen & 0x0ff); |
|
queue = 0; |
|
switch (aen_code) { |
|
case TW_AEN_QUEUE_EMPTY: |
|
dprintk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]); |
|
if (first_reset != 1) { |
|
return 1; |
|
} else { |
|
finished = 1; |
|
} |
|
break; |
|
case TW_AEN_SOFT_RESET: |
|
if (first_reset == 0) { |
|
first_reset = 1; |
|
} else { |
|
printk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]); |
|
tw_dev->aen_count++; |
|
queue = 1; |
|
} |
|
break; |
|
default: |
|
if (aen == 0x0ff) { |
|
printk(KERN_WARNING "3w-xxxx: AEN: INFO: AEN queue overflow.\n"); |
|
} else { |
|
table_max = ARRAY_SIZE(tw_aen_string); |
|
if ((aen & 0x0ff) < table_max) { |
|
if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') { |
|
printk(KERN_WARNING "3w-xxxx: AEN: %s%d.\n", tw_aen_string[aen & 0xff], aen >> 8); |
|
} else { |
|
printk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]); |
|
} |
|
} else |
|
printk(KERN_WARNING "3w-xxxx: Received AEN %d.\n", aen); |
|
} |
|
tw_dev->aen_count++; |
|
queue = 1; |
|
} |
|
|
|
/* Now put the aen on the aen_queue */ |
|
if (queue == 1) { |
|
tw_dev->aen_queue[tw_dev->aen_tail] = aen; |
|
if (tw_dev->aen_tail == TW_Q_LENGTH - 1) { |
|
tw_dev->aen_tail = TW_Q_START; |
|
} else { |
|
tw_dev->aen_tail = tw_dev->aen_tail + 1; |
|
} |
|
if (tw_dev->aen_head == tw_dev->aen_tail) { |
|
if (tw_dev->aen_head == TW_Q_LENGTH - 1) { |
|
tw_dev->aen_head = TW_Q_START; |
|
} else { |
|
tw_dev->aen_head = tw_dev->aen_head + 1; |
|
} |
|
} |
|
} |
|
found = 1; |
|
} |
|
if (found == 0) { |
|
printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Response never received.\n"); |
|
return 1; |
|
} |
|
} while (finished == 0); |
|
|
|
return 0; |
|
} /* End tw_aen_drain_queue() */ |
|
|
|
/* This function will allocate memory */ |
|
static int tw_allocate_memory(TW_Device_Extension *tw_dev, int size, int which) |
|
{ |
|
int i; |
|
dma_addr_t dma_handle; |
|
unsigned long *cpu_addr = NULL; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_allocate_memory()\n"); |
|
|
|
cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev, |
|
size * TW_Q_LENGTH, &dma_handle, GFP_KERNEL); |
|
if (cpu_addr == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: dma_alloc_coherent() failed.\n"); |
|
return 1; |
|
} |
|
|
|
if ((unsigned long)cpu_addr % (tw_dev->tw_pci_dev->device == TW_DEVICE_ID ? TW_ALIGNMENT_6000 : TW_ALIGNMENT_7000)) { |
|
printk(KERN_WARNING "3w-xxxx: Couldn't allocate correctly aligned memory.\n"); |
|
dma_free_coherent(&tw_dev->tw_pci_dev->dev, size * TW_Q_LENGTH, |
|
cpu_addr, dma_handle); |
|
return 1; |
|
} |
|
|
|
memset(cpu_addr, 0, size*TW_Q_LENGTH); |
|
|
|
for (i=0;i<TW_Q_LENGTH;i++) { |
|
switch(which) { |
|
case 0: |
|
tw_dev->command_packet_physical_address[i] = dma_handle+(i*size); |
|
tw_dev->command_packet_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); |
|
break; |
|
case 1: |
|
tw_dev->alignment_physical_address[i] = dma_handle+(i*size); |
|
tw_dev->alignment_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); |
|
break; |
|
default: |
|
printk(KERN_WARNING "3w-xxxx: tw_allocate_memory(): case slip in tw_allocate_memory()\n"); |
|
return 1; |
|
} |
|
} |
|
|
|
return 0; |
|
} /* End tw_allocate_memory() */ |
|
|
|
/* This function handles ioctl for the character device */ |
|
static long tw_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
|
{ |
|
int request_id; |
|
dma_addr_t dma_handle; |
|
unsigned short tw_aen_code; |
|
unsigned long flags; |
|
unsigned int data_buffer_length = 0; |
|
unsigned long data_buffer_length_adjusted = 0; |
|
struct inode *inode = file_inode(file); |
|
unsigned long *cpu_addr; |
|
long timeout; |
|
TW_New_Ioctl *tw_ioctl; |
|
TW_Passthru *passthru; |
|
TW_Device_Extension *tw_dev = tw_device_extension_list[iminor(inode)]; |
|
int retval = -EFAULT; |
|
void __user *argp = (void __user *)arg; |
|
|
|
dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl()\n"); |
|
|
|
mutex_lock(&tw_mutex); |
|
/* Only let one of these through at a time */ |
|
if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) { |
|
mutex_unlock(&tw_mutex); |
|
return -EINTR; |
|
} |
|
|
|
/* First copy down the buffer length */ |
|
if (copy_from_user(&data_buffer_length, argp, sizeof(unsigned int))) |
|
goto out; |
|
|
|
/* Check size */ |
|
if (data_buffer_length > TW_MAX_IOCTL_SECTORS * 512) { |
|
retval = -EINVAL; |
|
goto out; |
|
} |
|
|
|
/* Hardware can only do multiple of 512 byte transfers */ |
|
data_buffer_length_adjusted = (data_buffer_length + 511) & ~511; |
|
|
|
/* Now allocate ioctl buf memory */ |
|
cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted + sizeof(TW_New_Ioctl), &dma_handle, GFP_KERNEL); |
|
if (cpu_addr == NULL) { |
|
retval = -ENOMEM; |
|
goto out; |
|
} |
|
|
|
tw_ioctl = (TW_New_Ioctl *)cpu_addr; |
|
|
|
/* Now copy down the entire ioctl */ |
|
if (copy_from_user(tw_ioctl, argp, data_buffer_length + sizeof(TW_New_Ioctl))) |
|
goto out2; |
|
|
|
passthru = (TW_Passthru *)&tw_ioctl->firmware_command; |
|
|
|
/* See which ioctl we are doing */ |
|
switch (cmd) { |
|
case TW_OP_NOP: |
|
dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_OP_NOP.\n"); |
|
break; |
|
case TW_OP_AEN_LISTEN: |
|
dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_AEN_LISTEN.\n"); |
|
memset(tw_ioctl->data_buffer, 0, data_buffer_length); |
|
|
|
spin_lock_irqsave(tw_dev->host->host_lock, flags); |
|
if (tw_dev->aen_head == tw_dev->aen_tail) { |
|
tw_aen_code = TW_AEN_QUEUE_EMPTY; |
|
} else { |
|
tw_aen_code = tw_dev->aen_queue[tw_dev->aen_head]; |
|
if (tw_dev->aen_head == TW_Q_LENGTH - 1) { |
|
tw_dev->aen_head = TW_Q_START; |
|
} else { |
|
tw_dev->aen_head = tw_dev->aen_head + 1; |
|
} |
|
} |
|
spin_unlock_irqrestore(tw_dev->host->host_lock, flags); |
|
memcpy(tw_ioctl->data_buffer, &tw_aen_code, sizeof(tw_aen_code)); |
|
break; |
|
case TW_CMD_PACKET_WITH_DATA: |
|
dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_CMD_PACKET_WITH_DATA.\n"); |
|
spin_lock_irqsave(tw_dev->host->host_lock, flags); |
|
|
|
tw_state_request_start(tw_dev, &request_id); |
|
|
|
/* Flag internal command */ |
|
tw_dev->srb[request_id] = NULL; |
|
|
|
/* Flag chrdev ioctl */ |
|
tw_dev->chrdev_request_id = request_id; |
|
|
|
tw_ioctl->firmware_command.request_id = request_id; |
|
|
|
/* Load the sg list */ |
|
switch (TW_SGL_OUT(tw_ioctl->firmware_command.opcode__sgloffset)) { |
|
case 2: |
|
tw_ioctl->firmware_command.byte8.param.sgl[0].address = dma_handle + sizeof(TW_New_Ioctl); |
|
tw_ioctl->firmware_command.byte8.param.sgl[0].length = data_buffer_length_adjusted; |
|
break; |
|
case 3: |
|
tw_ioctl->firmware_command.byte8.io.sgl[0].address = dma_handle + sizeof(TW_New_Ioctl); |
|
tw_ioctl->firmware_command.byte8.io.sgl[0].length = data_buffer_length_adjusted; |
|
break; |
|
case 5: |
|
passthru->sg_list[0].address = dma_handle + sizeof(TW_New_Ioctl); |
|
passthru->sg_list[0].length = data_buffer_length_adjusted; |
|
break; |
|
} |
|
|
|
memcpy(tw_dev->command_packet_virtual_address[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command)); |
|
|
|
/* Now post the command packet to the controller */ |
|
tw_post_command_packet(tw_dev, request_id); |
|
spin_unlock_irqrestore(tw_dev->host->host_lock, flags); |
|
|
|
timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ; |
|
|
|
/* Now wait for the command to complete */ |
|
timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout); |
|
|
|
/* We timed out, and didn't get an interrupt */ |
|
if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) { |
|
/* Now we need to reset the board */ |
|
printk(KERN_WARNING "3w-xxxx: scsi%d: Character ioctl (0x%x) timed out, resetting card.\n", tw_dev->host->host_no, cmd); |
|
retval = -EIO; |
|
if (tw_reset_device_extension(tw_dev)) { |
|
printk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): Reset failed for card %d.\n", tw_dev->host->host_no); |
|
} |
|
goto out2; |
|
} |
|
|
|
/* Now copy in the command packet response */ |
|
memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virtual_address[request_id], sizeof(TW_Command)); |
|
|
|
/* Now complete the io */ |
|
spin_lock_irqsave(tw_dev->host->host_lock, flags); |
|
tw_dev->posted_request_count--; |
|
tw_dev->state[request_id] = TW_S_COMPLETED; |
|
tw_state_request_finish(tw_dev, request_id); |
|
spin_unlock_irqrestore(tw_dev->host->host_lock, flags); |
|
break; |
|
default: |
|
retval = -ENOTTY; |
|
goto out2; |
|
} |
|
|
|
/* Now copy the response to userspace */ |
|
if (copy_to_user(argp, tw_ioctl, sizeof(TW_New_Ioctl) + data_buffer_length)) |
|
goto out2; |
|
retval = 0; |
|
out2: |
|
/* Now free ioctl buf memory */ |
|
dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted + sizeof(TW_New_Ioctl), cpu_addr, dma_handle); |
|
out: |
|
mutex_unlock(&tw_dev->ioctl_lock); |
|
mutex_unlock(&tw_mutex); |
|
return retval; |
|
} /* End tw_chrdev_ioctl() */ |
|
|
|
/* This function handles open for the character device */ |
|
/* NOTE that this function races with remove. */ |
|
static int tw_chrdev_open(struct inode *inode, struct file *file) |
|
{ |
|
unsigned int minor_number; |
|
|
|
dprintk(KERN_WARNING "3w-xxxx: tw_ioctl_open()\n"); |
|
|
|
if (!capable(CAP_SYS_ADMIN)) |
|
return -EACCES; |
|
|
|
minor_number = iminor(inode); |
|
if (minor_number >= tw_device_extension_count) |
|
return -ENODEV; |
|
|
|
return 0; |
|
} /* End tw_chrdev_open() */ |
|
|
|
/* File operations struct for character device */ |
|
static const struct file_operations tw_fops = { |
|
.owner = THIS_MODULE, |
|
.unlocked_ioctl = tw_chrdev_ioctl, |
|
.compat_ioctl = compat_ptr_ioctl, |
|
.open = tw_chrdev_open, |
|
.release = NULL, |
|
.llseek = noop_llseek, |
|
}; |
|
|
|
/* This function will free up device extension resources */ |
|
static void tw_free_device_extension(TW_Device_Extension *tw_dev) |
|
{ |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_free_device_extension()\n"); |
|
|
|
/* Free command packet and generic buffer memory */ |
|
if (tw_dev->command_packet_virtual_address[0]) |
|
dma_free_coherent(&tw_dev->tw_pci_dev->dev, |
|
sizeof(TW_Command) * TW_Q_LENGTH, |
|
tw_dev->command_packet_virtual_address[0], |
|
tw_dev->command_packet_physical_address[0]); |
|
|
|
if (tw_dev->alignment_virtual_address[0]) |
|
dma_free_coherent(&tw_dev->tw_pci_dev->dev, |
|
sizeof(TW_Sector) * TW_Q_LENGTH, |
|
tw_dev->alignment_virtual_address[0], |
|
tw_dev->alignment_physical_address[0]); |
|
} /* End tw_free_device_extension() */ |
|
|
|
/* This function will send an initconnection command to controller */ |
|
static int tw_initconnection(TW_Device_Extension *tw_dev, int message_credits) |
|
{ |
|
unsigned long command_que_value; |
|
TW_Command *command_packet; |
|
TW_Response_Queue response_queue; |
|
int request_id = 0; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_initconnection()\n"); |
|
|
|
/* Initialize InitConnection command packet */ |
|
if (tw_dev->command_packet_virtual_address[request_id] == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet virtual address.\n"); |
|
return 1; |
|
} |
|
|
|
command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
|
memset(command_packet, 0, sizeof(TW_Sector)); |
|
command_packet->opcode__sgloffset = TW_OPSGL_IN(0, TW_OP_INIT_CONNECTION); |
|
command_packet->size = TW_INIT_COMMAND_PACKET_SIZE; |
|
command_packet->request_id = request_id; |
|
command_packet->status = 0x0; |
|
command_packet->flags = 0x0; |
|
command_packet->byte6.message_credits = message_credits; |
|
command_packet->byte8.init_connection.response_queue_pointer = 0x0; |
|
command_que_value = tw_dev->command_packet_physical_address[request_id]; |
|
|
|
if (command_que_value == 0) { |
|
printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet physical address.\n"); |
|
return 1; |
|
} |
|
|
|
/* Send command packet to the board */ |
|
outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); |
|
|
|
/* Poll for completion */ |
|
if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) { |
|
response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
|
request_id = TW_RESID_OUT(response_queue.response_id); |
|
|
|
if (request_id != 0) { |
|
/* unexpected request id */ |
|
printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Unexpected request id.\n"); |
|
return 1; |
|
} |
|
if (command_packet->status != 0) { |
|
/* bad response */ |
|
tw_decode_sense(tw_dev, request_id, 0); |
|
return 1; |
|
} |
|
} |
|
return 0; |
|
} /* End tw_initconnection() */ |
|
|
|
/* Set a value in the features table */ |
|
static int tw_setfeature(TW_Device_Extension *tw_dev, int parm, int param_size, |
|
unsigned char *val) |
|
{ |
|
TW_Param *param; |
|
TW_Command *command_packet; |
|
TW_Response_Queue response_queue; |
|
int request_id = 0; |
|
unsigned long command_que_value; |
|
unsigned long param_value; |
|
|
|
/* Initialize SetParam command packet */ |
|
if (tw_dev->command_packet_virtual_address[request_id] == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet virtual address.\n"); |
|
return 1; |
|
} |
|
command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
|
memset(command_packet, 0, sizeof(TW_Sector)); |
|
param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
|
|
|
command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM); |
|
param->table_id = 0x404; /* Features table */ |
|
param->parameter_id = parm; |
|
param->parameter_size_bytes = param_size; |
|
memcpy(param->data, val, param_size); |
|
|
|
param_value = tw_dev->alignment_physical_address[request_id]; |
|
if (param_value == 0) { |
|
printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad alignment physical address.\n"); |
|
tw_dev->state[request_id] = TW_S_COMPLETED; |
|
tw_state_request_finish(tw_dev, request_id); |
|
tw_dev->srb[request_id]->result = (DID_OK << 16); |
|
scsi_done(tw_dev->srb[request_id]); |
|
} |
|
command_packet->byte8.param.sgl[0].address = param_value; |
|
command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
|
|
|
command_packet->size = 4; |
|
command_packet->request_id = request_id; |
|
command_packet->byte6.parameter_count = 1; |
|
|
|
command_que_value = tw_dev->command_packet_physical_address[request_id]; |
|
if (command_que_value == 0) { |
|
printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet physical address.\n"); |
|
return 1; |
|
} |
|
|
|
/* Send command packet to the board */ |
|
outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); |
|
|
|
/* Poll for completion */ |
|
if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) { |
|
response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
|
request_id = TW_RESID_OUT(response_queue.response_id); |
|
|
|
if (request_id != 0) { |
|
/* unexpected request id */ |
|
printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Unexpected request id.\n"); |
|
return 1; |
|
} |
|
if (command_packet->status != 0) { |
|
/* bad response */ |
|
tw_decode_sense(tw_dev, request_id, 0); |
|
return 1; |
|
} |
|
} |
|
|
|
return 0; |
|
} /* End tw_setfeature() */ |
|
|
|
/* This function will reset a controller */ |
|
static int tw_reset_sequence(TW_Device_Extension *tw_dev) |
|
{ |
|
int error = 0; |
|
int tries = 0; |
|
unsigned char c = 1; |
|
|
|
/* Reset the board */ |
|
while (tries < TW_MAX_RESET_TRIES) { |
|
TW_SOFT_RESET(tw_dev); |
|
|
|
error = tw_aen_drain_queue(tw_dev); |
|
if (error) { |
|
printk(KERN_WARNING "3w-xxxx: scsi%d: AEN drain failed, retrying.\n", tw_dev->host->host_no); |
|
tries++; |
|
continue; |
|
} |
|
|
|
/* Check for controller errors */ |
|
if (tw_check_errors(tw_dev)) { |
|
printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors found, retrying.\n", tw_dev->host->host_no); |
|
tries++; |
|
continue; |
|
} |
|
|
|
/* Now the controller is in a good state */ |
|
break; |
|
} |
|
|
|
if (tries >= TW_MAX_RESET_TRIES) { |
|
printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors, card not responding, check all cabling.\n", tw_dev->host->host_no); |
|
return 1; |
|
} |
|
|
|
error = tw_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS); |
|
if (error) { |
|
printk(KERN_WARNING "3w-xxxx: scsi%d: Connection initialization failed.\n", tw_dev->host->host_no); |
|
return 1; |
|
} |
|
|
|
error = tw_setfeature(tw_dev, 2, 1, &c); |
|
if (error) { |
|
printk(KERN_WARNING "3w-xxxx: Unable to set features for card, probable old firmware or card.\n"); |
|
} |
|
|
|
return 0; |
|
} /* End tw_reset_sequence() */ |
|
|
|
/* This function will initialize the fields of a device extension */ |
|
static int tw_initialize_device_extension(TW_Device_Extension *tw_dev) |
|
{ |
|
int i, error=0; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_initialize_device_extension()\n"); |
|
|
|
/* Initialize command packet buffers */ |
|
error = tw_allocate_memory(tw_dev, sizeof(TW_Command), 0); |
|
if (error) { |
|
printk(KERN_WARNING "3w-xxxx: Command packet memory allocation failed.\n"); |
|
return 1; |
|
} |
|
|
|
/* Initialize generic buffer */ |
|
error = tw_allocate_memory(tw_dev, sizeof(TW_Sector), 1); |
|
if (error) { |
|
printk(KERN_WARNING "3w-xxxx: Generic memory allocation failed.\n"); |
|
return 1; |
|
} |
|
|
|
for (i=0;i<TW_Q_LENGTH;i++) { |
|
tw_dev->free_queue[i] = i; |
|
tw_dev->state[i] = TW_S_INITIAL; |
|
} |
|
|
|
tw_dev->pending_head = TW_Q_START; |
|
tw_dev->pending_tail = TW_Q_START; |
|
tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; |
|
|
|
mutex_init(&tw_dev->ioctl_lock); |
|
init_waitqueue_head(&tw_dev->ioctl_wqueue); |
|
|
|
return 0; |
|
} /* End tw_initialize_device_extension() */ |
|
|
|
/* This function will reset a device extension */ |
|
static int tw_reset_device_extension(TW_Device_Extension *tw_dev) |
|
{ |
|
int i = 0; |
|
struct scsi_cmnd *srb; |
|
unsigned long flags = 0; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_reset_device_extension()\n"); |
|
|
|
set_bit(TW_IN_RESET, &tw_dev->flags); |
|
TW_DISABLE_INTERRUPTS(tw_dev); |
|
TW_MASK_COMMAND_INTERRUPT(tw_dev); |
|
spin_lock_irqsave(tw_dev->host->host_lock, flags); |
|
|
|
/* Abort all requests that are in progress */ |
|
for (i=0;i<TW_Q_LENGTH;i++) { |
|
if ((tw_dev->state[i] != TW_S_FINISHED) && |
|
(tw_dev->state[i] != TW_S_INITIAL) && |
|
(tw_dev->state[i] != TW_S_COMPLETED)) { |
|
srb = tw_dev->srb[i]; |
|
if (srb != NULL) { |
|
srb->result = (DID_RESET << 16); |
|
scsi_dma_unmap(srb); |
|
scsi_done(srb); |
|
} |
|
} |
|
} |
|
|
|
/* Reset queues and counts */ |
|
for (i=0;i<TW_Q_LENGTH;i++) { |
|
tw_dev->free_queue[i] = i; |
|
tw_dev->state[i] = TW_S_INITIAL; |
|
} |
|
tw_dev->free_head = TW_Q_START; |
|
tw_dev->free_tail = TW_Q_START; |
|
tw_dev->posted_request_count = 0; |
|
tw_dev->pending_request_count = 0; |
|
tw_dev->pending_head = TW_Q_START; |
|
tw_dev->pending_tail = TW_Q_START; |
|
tw_dev->reset_print = 0; |
|
|
|
spin_unlock_irqrestore(tw_dev->host->host_lock, flags); |
|
|
|
if (tw_reset_sequence(tw_dev)) { |
|
printk(KERN_WARNING "3w-xxxx: scsi%d: Reset sequence failed.\n", tw_dev->host->host_no); |
|
return 1; |
|
} |
|
|
|
TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); |
|
clear_bit(TW_IN_RESET, &tw_dev->flags); |
|
tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; |
|
|
|
return 0; |
|
} /* End tw_reset_device_extension() */ |
|
|
|
/* This funciton returns unit geometry in cylinders/heads/sectors */ |
|
static int tw_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, |
|
sector_t capacity, int geom[]) |
|
{ |
|
int heads, sectors, cylinders; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam()\n"); |
|
|
|
heads = 64; |
|
sectors = 32; |
|
cylinders = sector_div(capacity, heads * sectors); |
|
|
|
if (capacity >= 0x200000) { |
|
heads = 255; |
|
sectors = 63; |
|
cylinders = sector_div(capacity, heads * sectors); |
|
} |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam(): heads = %d, sectors = %d, cylinders = %d\n", heads, sectors, cylinders); |
|
geom[0] = heads; |
|
geom[1] = sectors; |
|
geom[2] = cylinders; |
|
|
|
return 0; |
|
} /* End tw_scsi_biosparam() */ |
|
|
|
/* This is the new scsi eh reset function */ |
|
static int tw_scsi_eh_reset(struct scsi_cmnd *SCpnt) |
|
{ |
|
TW_Device_Extension *tw_dev=NULL; |
|
int retval = FAILED; |
|
|
|
tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; |
|
|
|
tw_dev->num_resets++; |
|
|
|
sdev_printk(KERN_WARNING, SCpnt->device, |
|
"WARNING: Command (0x%x) timed out, resetting card.\n", |
|
SCpnt->cmnd[0]); |
|
|
|
/* Make sure we are not issuing an ioctl or resetting from ioctl */ |
|
mutex_lock(&tw_dev->ioctl_lock); |
|
|
|
/* Now reset the card and some of the device extension data */ |
|
if (tw_reset_device_extension(tw_dev)) { |
|
printk(KERN_WARNING "3w-xxxx: scsi%d: Reset failed.\n", tw_dev->host->host_no); |
|
goto out; |
|
} |
|
|
|
retval = SUCCESS; |
|
out: |
|
mutex_unlock(&tw_dev->ioctl_lock); |
|
return retval; |
|
} /* End tw_scsi_eh_reset() */ |
|
|
|
/* This function handles scsi inquiry commands */ |
|
static int tw_scsiop_inquiry(TW_Device_Extension *tw_dev, int request_id) |
|
{ |
|
TW_Param *param; |
|
TW_Command *command_packet; |
|
unsigned long command_que_value; |
|
unsigned long param_value; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry()\n"); |
|
|
|
/* Initialize command packet */ |
|
command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
|
if (command_packet == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet virtual address.\n"); |
|
return 1; |
|
} |
|
memset(command_packet, 0, sizeof(TW_Sector)); |
|
command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
|
command_packet->size = 4; |
|
command_packet->request_id = request_id; |
|
command_packet->status = 0; |
|
command_packet->flags = 0; |
|
command_packet->byte6.parameter_count = 1; |
|
|
|
/* Now setup the param */ |
|
if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment virtual address.\n"); |
|
return 1; |
|
} |
|
param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
|
memset(param, 0, sizeof(TW_Sector)); |
|
param->table_id = 3; /* unit summary table */ |
|
param->parameter_id = 3; /* unitsstatus parameter */ |
|
param->parameter_size_bytes = TW_MAX_UNITS; |
|
param_value = tw_dev->alignment_physical_address[request_id]; |
|
if (param_value == 0) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment physical address.\n"); |
|
return 1; |
|
} |
|
|
|
command_packet->byte8.param.sgl[0].address = param_value; |
|
command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
|
command_que_value = tw_dev->command_packet_physical_address[request_id]; |
|
if (command_que_value == 0) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet physical address.\n"); |
|
return 1; |
|
} |
|
|
|
/* Now try to post the command packet */ |
|
tw_post_command_packet(tw_dev, request_id); |
|
|
|
return 0; |
|
} /* End tw_scsiop_inquiry() */ |
|
|
|
static void tw_transfer_internal(TW_Device_Extension *tw_dev, int request_id, |
|
void *data, unsigned int len) |
|
{ |
|
scsi_sg_copy_from_buffer(tw_dev->srb[request_id], data, len); |
|
} |
|
|
|
/* This function is called by the isr to complete an inquiry command */ |
|
static int tw_scsiop_inquiry_complete(TW_Device_Extension *tw_dev, int request_id) |
|
{ |
|
unsigned char *is_unit_present; |
|
unsigned char request_buffer[36]; |
|
TW_Param *param; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry_complete()\n"); |
|
|
|
memset(request_buffer, 0, sizeof(request_buffer)); |
|
request_buffer[0] = TYPE_DISK; /* Peripheral device type */ |
|
request_buffer[1] = 0; /* Device type modifier */ |
|
request_buffer[2] = 0; /* No ansi/iso compliance */ |
|
request_buffer[4] = 31; /* Additional length */ |
|
memcpy(&request_buffer[8], "3ware ", 8); /* Vendor ID */ |
|
sprintf(&request_buffer[16], "Logical Disk %-2d ", tw_dev->srb[request_id]->device->id); |
|
memcpy(&request_buffer[32], TW_DRIVER_VERSION, 3); |
|
tw_transfer_internal(tw_dev, request_id, request_buffer, |
|
sizeof(request_buffer)); |
|
|
|
param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
|
if (param == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry_complete(): Bad alignment virtual address.\n"); |
|
return 1; |
|
} |
|
is_unit_present = &(param->data[0]); |
|
|
|
if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) { |
|
tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 1; |
|
} else { |
|
tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 0; |
|
tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16); |
|
return TW_ISR_DONT_RESULT; |
|
} |
|
|
|
return 0; |
|
} /* End tw_scsiop_inquiry_complete() */ |
|
|
|
/* This function handles scsi mode_sense commands */ |
|
static int tw_scsiop_mode_sense(TW_Device_Extension *tw_dev, int request_id) |
|
{ |
|
TW_Param *param; |
|
TW_Command *command_packet; |
|
unsigned long command_que_value; |
|
unsigned long param_value; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense()\n"); |
|
|
|
/* Only page control = 0, page code = 0x8 (cache page) supported */ |
|
if (tw_dev->srb[request_id]->cmnd[2] != 0x8) { |
|
tw_dev->state[request_id] = TW_S_COMPLETED; |
|
tw_state_request_finish(tw_dev, request_id); |
|
tw_dev->srb[request_id]->result = (DID_OK << 16); |
|
scsi_done(tw_dev->srb[request_id]); |
|
return 0; |
|
} |
|
|
|
/* Now read firmware cache setting for this unit */ |
|
command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
|
if (command_packet == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet virtual address.\n"); |
|
return 1; |
|
} |
|
|
|
/* Setup the command packet */ |
|
memset(command_packet, 0, sizeof(TW_Sector)); |
|
command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
|
command_packet->size = 4; |
|
command_packet->request_id = request_id; |
|
command_packet->status = 0; |
|
command_packet->flags = 0; |
|
command_packet->byte6.parameter_count = 1; |
|
|
|
/* Setup the param */ |
|
if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment virtual address.\n"); |
|
return 1; |
|
} |
|
|
|
param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
|
memset(param, 0, sizeof(TW_Sector)); |
|
param->table_id = TW_UNIT_INFORMATION_TABLE_BASE + tw_dev->srb[request_id]->device->id; |
|
param->parameter_id = 7; /* unit flags */ |
|
param->parameter_size_bytes = 1; |
|
param_value = tw_dev->alignment_physical_address[request_id]; |
|
if (param_value == 0) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment physical address.\n"); |
|
return 1; |
|
} |
|
|
|
command_packet->byte8.param.sgl[0].address = param_value; |
|
command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
|
command_que_value = tw_dev->command_packet_physical_address[request_id]; |
|
if (command_que_value == 0) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet physical address.\n"); |
|
return 1; |
|
} |
|
|
|
/* Now try to post the command packet */ |
|
tw_post_command_packet(tw_dev, request_id); |
|
|
|
return 0; |
|
} /* End tw_scsiop_mode_sense() */ |
|
|
|
/* This function is called by the isr to complete a mode sense command */ |
|
static int tw_scsiop_mode_sense_complete(TW_Device_Extension *tw_dev, int request_id) |
|
{ |
|
TW_Param *param; |
|
unsigned char *flags; |
|
unsigned char request_buffer[8]; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense_complete()\n"); |
|
|
|
param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
|
if (param == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense_complete(): Bad alignment virtual address.\n"); |
|
return 1; |
|
} |
|
flags = (char *)&(param->data[0]); |
|
memset(request_buffer, 0, sizeof(request_buffer)); |
|
|
|
request_buffer[0] = 0xf; /* mode data length */ |
|
request_buffer[1] = 0; /* default medium type */ |
|
request_buffer[2] = 0x10; /* dpo/fua support on */ |
|
request_buffer[3] = 0; /* no block descriptors */ |
|
request_buffer[4] = 0x8; /* caching page */ |
|
request_buffer[5] = 0xa; /* page length */ |
|
if (*flags & 0x1) |
|
request_buffer[6] = 0x5; /* WCE on, RCD on */ |
|
else |
|
request_buffer[6] = 0x1; /* WCE off, RCD on */ |
|
tw_transfer_internal(tw_dev, request_id, request_buffer, |
|
sizeof(request_buffer)); |
|
|
|
return 0; |
|
} /* End tw_scsiop_mode_sense_complete() */ |
|
|
|
/* This function handles scsi read_capacity commands */ |
|
static int tw_scsiop_read_capacity(TW_Device_Extension *tw_dev, int request_id) |
|
{ |
|
TW_Param *param; |
|
TW_Command *command_packet; |
|
unsigned long command_que_value; |
|
unsigned long param_value; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity()\n"); |
|
|
|
/* Initialize command packet */ |
|
command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
|
|
|
if (command_packet == NULL) { |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet virtual address.\n"); |
|
return 1; |
|
} |
|
memset(command_packet, 0, sizeof(TW_Sector)); |
|
command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
|
command_packet->size = 4; |
|
command_packet->request_id = request_id; |
|
command_packet->unit__hostid = TW_UNITHOST_IN(0, tw_dev->srb[request_id]->device->id); |
|
command_packet->status = 0; |
|
command_packet->flags = 0; |
|
command_packet->byte6.block_count = 1; |
|
|
|
/* Now setup the param */ |
|
if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment virtual address.\n"); |
|
return 1; |
|
} |
|
param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
|
memset(param, 0, sizeof(TW_Sector)); |
|
param->table_id = TW_UNIT_INFORMATION_TABLE_BASE + |
|
tw_dev->srb[request_id]->device->id; |
|
param->parameter_id = 4; /* unitcapacity parameter */ |
|
param->parameter_size_bytes = 4; |
|
param_value = tw_dev->alignment_physical_address[request_id]; |
|
if (param_value == 0) { |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment physical address.\n"); |
|
return 1; |
|
} |
|
|
|
command_packet->byte8.param.sgl[0].address = param_value; |
|
command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
|
command_que_value = tw_dev->command_packet_physical_address[request_id]; |
|
if (command_que_value == 0) { |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet physical address.\n"); |
|
return 1; |
|
} |
|
|
|
/* Now try to post the command to the board */ |
|
tw_post_command_packet(tw_dev, request_id); |
|
|
|
return 0; |
|
} /* End tw_scsiop_read_capacity() */ |
|
|
|
/* This function is called by the isr to complete a readcapacity command */ |
|
static int tw_scsiop_read_capacity_complete(TW_Device_Extension *tw_dev, int request_id) |
|
{ |
|
unsigned char *param_data; |
|
u32 capacity; |
|
char buff[8]; |
|
TW_Param *param; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete()\n"); |
|
|
|
memset(buff, 0, sizeof(buff)); |
|
param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
|
if (param == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_capacity_complete(): Bad alignment virtual address.\n"); |
|
return 1; |
|
} |
|
param_data = &(param->data[0]); |
|
|
|
capacity = (param_data[3] << 24) | (param_data[2] << 16) | |
|
(param_data[1] << 8) | param_data[0]; |
|
|
|
/* Subtract one sector to fix get last sector ioctl */ |
|
capacity -= 1; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete(): Capacity = 0x%x.\n", capacity); |
|
|
|
/* Number of LBA's */ |
|
buff[0] = (capacity >> 24); |
|
buff[1] = (capacity >> 16) & 0xff; |
|
buff[2] = (capacity >> 8) & 0xff; |
|
buff[3] = capacity & 0xff; |
|
|
|
/* Block size in bytes (512) */ |
|
buff[4] = (TW_BLOCK_SIZE >> 24); |
|
buff[5] = (TW_BLOCK_SIZE >> 16) & 0xff; |
|
buff[6] = (TW_BLOCK_SIZE >> 8) & 0xff; |
|
buff[7] = TW_BLOCK_SIZE & 0xff; |
|
|
|
tw_transfer_internal(tw_dev, request_id, buff, sizeof(buff)); |
|
|
|
return 0; |
|
} /* End tw_scsiop_read_capacity_complete() */ |
|
|
|
/* This function handles scsi read or write commands */ |
|
static int tw_scsiop_read_write(TW_Device_Extension *tw_dev, int request_id) |
|
{ |
|
TW_Command *command_packet; |
|
unsigned long command_que_value; |
|
u32 lba = 0x0, num_sectors = 0x0; |
|
int i, use_sg; |
|
struct scsi_cmnd *srb; |
|
struct scatterlist *sglist, *sg; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write()\n"); |
|
|
|
srb = tw_dev->srb[request_id]; |
|
|
|
sglist = scsi_sglist(srb); |
|
if (!sglist) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Request buffer NULL.\n"); |
|
return 1; |
|
} |
|
|
|
/* Initialize command packet */ |
|
command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
|
if (command_packet == NULL) { |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): Bad command packet virtual address.\n"); |
|
return 1; |
|
} |
|
|
|
if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == READ_10) { |
|
command_packet->opcode__sgloffset = TW_OPSGL_IN(3, TW_OP_READ); |
|
} else { |
|
command_packet->opcode__sgloffset = TW_OPSGL_IN(3, TW_OP_WRITE); |
|
} |
|
|
|
command_packet->size = 3; |
|
command_packet->request_id = request_id; |
|
command_packet->unit__hostid = TW_UNITHOST_IN(0, srb->device->id); |
|
command_packet->status = 0; |
|
command_packet->flags = 0; |
|
|
|
if (srb->cmnd[0] == WRITE_10) { |
|
if ((srb->cmnd[1] & 0x8) || (srb->cmnd[1] & 0x10)) |
|
command_packet->flags = 1; |
|
} |
|
|
|
if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == WRITE_6) { |
|
lba = ((u32)srb->cmnd[1] << 16) | ((u32)srb->cmnd[2] << 8) | (u32)srb->cmnd[3]; |
|
num_sectors = (u32)srb->cmnd[4]; |
|
} else { |
|
lba = ((u32)srb->cmnd[2] << 24) | ((u32)srb->cmnd[3] << 16) | ((u32)srb->cmnd[4] << 8) | (u32)srb->cmnd[5]; |
|
num_sectors = (u32)srb->cmnd[8] | ((u32)srb->cmnd[7] << 8); |
|
} |
|
|
|
/* Update sector statistic */ |
|
tw_dev->sector_count = num_sectors; |
|
if (tw_dev->sector_count > tw_dev->max_sector_count) |
|
tw_dev->max_sector_count = tw_dev->sector_count; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): lba = 0x%x num_sectors = 0x%x\n", lba, num_sectors); |
|
command_packet->byte8.io.lba = lba; |
|
command_packet->byte6.block_count = num_sectors; |
|
|
|
use_sg = scsi_dma_map(srb); |
|
if (use_sg <= 0) |
|
return 1; |
|
|
|
scsi_for_each_sg(tw_dev->srb[request_id], sg, use_sg, i) { |
|
command_packet->byte8.io.sgl[i].address = sg_dma_address(sg); |
|
command_packet->byte8.io.sgl[i].length = sg_dma_len(sg); |
|
command_packet->size+=2; |
|
} |
|
|
|
/* Update SG statistics */ |
|
tw_dev->sgl_entries = scsi_sg_count(tw_dev->srb[request_id]); |
|
if (tw_dev->sgl_entries > tw_dev->max_sgl_entries) |
|
tw_dev->max_sgl_entries = tw_dev->sgl_entries; |
|
|
|
command_que_value = tw_dev->command_packet_physical_address[request_id]; |
|
if (command_que_value == 0) { |
|
dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Bad command packet physical address.\n"); |
|
return 1; |
|
} |
|
|
|
/* Now try to post the command to the board */ |
|
tw_post_command_packet(tw_dev, request_id); |
|
|
|
return 0; |
|
} /* End tw_scsiop_read_write() */ |
|
|
|
/* This function will handle the request sense scsi command */ |
|
static int tw_scsiop_request_sense(TW_Device_Extension *tw_dev, int request_id) |
|
{ |
|
char request_buffer[18]; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_request_sense()\n"); |
|
|
|
memset(request_buffer, 0, sizeof(request_buffer)); |
|
request_buffer[0] = 0x70; /* Immediate fixed format */ |
|
request_buffer[7] = 10; /* minimum size per SPC: 18 bytes */ |
|
/* leave all other fields zero, giving effectively NO_SENSE return */ |
|
tw_transfer_internal(tw_dev, request_id, request_buffer, |
|
sizeof(request_buffer)); |
|
|
|
tw_dev->state[request_id] = TW_S_COMPLETED; |
|
tw_state_request_finish(tw_dev, request_id); |
|
|
|
/* If we got a request_sense, we probably want a reset, return error */ |
|
tw_dev->srb[request_id]->result = (DID_ERROR << 16); |
|
scsi_done(tw_dev->srb[request_id]); |
|
|
|
return 0; |
|
} /* End tw_scsiop_request_sense() */ |
|
|
|
/* This function will handle synchronize cache scsi command */ |
|
static int tw_scsiop_synchronize_cache(TW_Device_Extension *tw_dev, int request_id) |
|
{ |
|
TW_Command *command_packet; |
|
unsigned long command_que_value; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_synchronize_cache()\n"); |
|
|
|
/* Send firmware flush command for this unit */ |
|
command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
|
if (command_packet == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet virtual address.\n"); |
|
return 1; |
|
} |
|
|
|
/* Setup the command packet */ |
|
memset(command_packet, 0, sizeof(TW_Sector)); |
|
command_packet->opcode__sgloffset = TW_OPSGL_IN(0, TW_OP_FLUSH_CACHE); |
|
command_packet->size = 2; |
|
command_packet->request_id = request_id; |
|
command_packet->unit__hostid = TW_UNITHOST_IN(0, tw_dev->srb[request_id]->device->id); |
|
command_packet->status = 0; |
|
command_packet->flags = 0; |
|
command_packet->byte6.parameter_count = 1; |
|
command_que_value = tw_dev->command_packet_physical_address[request_id]; |
|
if (command_que_value == 0) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet physical address.\n"); |
|
return 1; |
|
} |
|
|
|
/* Now try to post the command packet */ |
|
tw_post_command_packet(tw_dev, request_id); |
|
|
|
return 0; |
|
} /* End tw_scsiop_synchronize_cache() */ |
|
|
|
/* This function will handle test unit ready scsi command */ |
|
static int tw_scsiop_test_unit_ready(TW_Device_Extension *tw_dev, int request_id) |
|
{ |
|
TW_Param *param; |
|
TW_Command *command_packet; |
|
unsigned long command_que_value; |
|
unsigned long param_value; |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_test_unit_ready()\n"); |
|
|
|
/* Initialize command packet */ |
|
command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
|
if (command_packet == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet virtual address.\n"); |
|
return 1; |
|
} |
|
memset(command_packet, 0, sizeof(TW_Sector)); |
|
command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
|
command_packet->size = 4; |
|
command_packet->request_id = request_id; |
|
command_packet->status = 0; |
|
command_packet->flags = 0; |
|
command_packet->byte6.parameter_count = 1; |
|
|
|
/* Now setup the param */ |
|
if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment virtual address.\n"); |
|
return 1; |
|
} |
|
param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
|
memset(param, 0, sizeof(TW_Sector)); |
|
param->table_id = 3; /* unit summary table */ |
|
param->parameter_id = 3; /* unitsstatus parameter */ |
|
param->parameter_size_bytes = TW_MAX_UNITS; |
|
param_value = tw_dev->alignment_physical_address[request_id]; |
|
if (param_value == 0) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment physical address.\n"); |
|
return 1; |
|
} |
|
|
|
command_packet->byte8.param.sgl[0].address = param_value; |
|
command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
|
command_que_value = tw_dev->command_packet_physical_address[request_id]; |
|
if (command_que_value == 0) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet physical address.\n"); |
|
return 1; |
|
} |
|
|
|
/* Now try to post the command packet */ |
|
tw_post_command_packet(tw_dev, request_id); |
|
|
|
return 0; |
|
} /* End tw_scsiop_test_unit_ready() */ |
|
|
|
/* This function is called by the isr to complete a testunitready command */ |
|
static int tw_scsiop_test_unit_ready_complete(TW_Device_Extension *tw_dev, int request_id) |
|
{ |
|
unsigned char *is_unit_present; |
|
TW_Param *param; |
|
|
|
dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete()\n"); |
|
|
|
param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
|
if (param == NULL) { |
|
printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete(): Bad alignment virtual address.\n"); |
|
return 1; |
|
} |
|
is_unit_present = &(param->data[0]); |
|
|
|
if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) { |
|
tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 1; |
|
} else { |
|
tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 0; |
|
tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16); |
|
return TW_ISR_DONT_RESULT; |
|
} |
|
|
|
return 0; |
|
} /* End tw_scsiop_test_unit_ready_complete() */ |
|
|
|
/* This is the main scsi queue function to handle scsi opcodes */ |
|
static int tw_scsi_queue_lck(struct scsi_cmnd *SCpnt) |
|
{ |
|
void (*done)(struct scsi_cmnd *) = scsi_done; |
|
unsigned char *command = SCpnt->cmnd; |
|
int request_id = 0; |
|
int retval = 1; |
|
TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; |
|
|
|
/* If we are resetting due to timed out ioctl, report as busy */ |
|
if (test_bit(TW_IN_RESET, &tw_dev->flags)) |
|
return SCSI_MLQUEUE_HOST_BUSY; |
|
|
|
/* Queue the command and get a request id */ |
|
tw_state_request_start(tw_dev, &request_id); |
|
|
|
/* Save the scsi command for use by the ISR */ |
|
tw_dev->srb[request_id] = SCpnt; |
|
|
|
switch (*command) { |
|
case READ_10: |
|
case READ_6: |
|
case WRITE_10: |
|
case WRITE_6: |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught READ/WRITE.\n"); |
|
retval = tw_scsiop_read_write(tw_dev, request_id); |
|
break; |
|
case TEST_UNIT_READY: |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught TEST_UNIT_READY.\n"); |
|
retval = tw_scsiop_test_unit_ready(tw_dev, request_id); |
|
break; |
|
case INQUIRY: |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught INQUIRY.\n"); |
|
retval = tw_scsiop_inquiry(tw_dev, request_id); |
|
break; |
|
case READ_CAPACITY: |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught READ_CAPACITY.\n"); |
|
retval = tw_scsiop_read_capacity(tw_dev, request_id); |
|
break; |
|
case REQUEST_SENSE: |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught REQUEST_SENSE.\n"); |
|
retval = tw_scsiop_request_sense(tw_dev, request_id); |
|
break; |
|
case MODE_SENSE: |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught MODE_SENSE.\n"); |
|
retval = tw_scsiop_mode_sense(tw_dev, request_id); |
|
break; |
|
case SYNCHRONIZE_CACHE: |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught SYNCHRONIZE_CACHE.\n"); |
|
retval = tw_scsiop_synchronize_cache(tw_dev, request_id); |
|
break; |
|
case TW_IOCTL: |
|
printk(KERN_WARNING "3w-xxxx: SCSI_IOCTL_SEND_COMMAND deprecated, please update your 3ware tools.\n"); |
|
break; |
|
default: |
|
printk(KERN_NOTICE "3w-xxxx: scsi%d: Unknown scsi opcode: 0x%x\n", tw_dev->host->host_no, *command); |
|
tw_dev->state[request_id] = TW_S_COMPLETED; |
|
tw_state_request_finish(tw_dev, request_id); |
|
scsi_build_sense(SCpnt, 1, ILLEGAL_REQUEST, 0x20, 0); |
|
done(SCpnt); |
|
retval = 0; |
|
} |
|
if (retval) { |
|
tw_dev->state[request_id] = TW_S_COMPLETED; |
|
tw_state_request_finish(tw_dev, request_id); |
|
SCpnt->result = (DID_ERROR << 16); |
|
done(SCpnt); |
|
retval = 0; |
|
} |
|
return retval; |
|
} /* End tw_scsi_queue() */ |
|
|
|
static DEF_SCSI_QCMD(tw_scsi_queue) |
|
|
|
/* This function is the interrupt service routine */ |
|
static irqreturn_t tw_interrupt(int irq, void *dev_instance) |
|
{ |
|
int request_id; |
|
u32 status_reg_value; |
|
TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance; |
|
TW_Response_Queue response_que; |
|
int error = 0, retval = 0; |
|
TW_Command *command_packet; |
|
int handled = 0; |
|
|
|
/* Get the host lock for io completions */ |
|
spin_lock(tw_dev->host->host_lock); |
|
|
|
/* Read the registers */ |
|
status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
|
|
|
/* Check if this is our interrupt, otherwise bail */ |
|
if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT)) |
|
goto tw_interrupt_bail; |
|
|
|
handled = 1; |
|
|
|
/* If we are resetting, bail */ |
|
if (test_bit(TW_IN_RESET, &tw_dev->flags)) |
|
goto tw_interrupt_bail; |
|
|
|
/* Check controller for errors */ |
|
if (tw_check_bits(status_reg_value)) { |
|
dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n"); |
|
if (tw_decode_bits(tw_dev, status_reg_value, 1)) { |
|
TW_CLEAR_ALL_INTERRUPTS(tw_dev); |
|
goto tw_interrupt_bail; |
|
} |
|
} |
|
|
|
/* Handle host interrupt */ |
|
if (status_reg_value & TW_STATUS_HOST_INTERRUPT) { |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received host interrupt.\n"); |
|
TW_CLEAR_HOST_INTERRUPT(tw_dev); |
|
} |
|
|
|
/* Handle attention interrupt */ |
|
if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) { |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received attention interrupt.\n"); |
|
TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); |
|
tw_state_request_start(tw_dev, &request_id); |
|
error = tw_aen_read_queue(tw_dev, request_id); |
|
if (error) { |
|
printk(KERN_WARNING "3w-xxxx: scsi%d: Error reading aen queue.\n", tw_dev->host->host_no); |
|
tw_dev->state[request_id] = TW_S_COMPLETED; |
|
tw_state_request_finish(tw_dev, request_id); |
|
} |
|
} |
|
|
|
/* Handle command interrupt */ |
|
if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) { |
|
/* Drain as many pending commands as we can */ |
|
while (tw_dev->pending_request_count > 0) { |
|
request_id = tw_dev->pending_queue[tw_dev->pending_head]; |
|
if (tw_dev->state[request_id] != TW_S_PENDING) { |
|
printk(KERN_WARNING "3w-xxxx: scsi%d: Found request id that wasn't pending.\n", tw_dev->host->host_no); |
|
break; |
|
} |
|
if (tw_post_command_packet(tw_dev, request_id)==0) { |
|
if (tw_dev->pending_head == TW_Q_LENGTH-1) { |
|
tw_dev->pending_head = TW_Q_START; |
|
} else { |
|
tw_dev->pending_head = tw_dev->pending_head + 1; |
|
} |
|
tw_dev->pending_request_count--; |
|
} else { |
|
/* If we get here, we will continue re-posting on the next command interrupt */ |
|
break; |
|
} |
|
} |
|
/* If there are no more pending requests, we mask command interrupt */ |
|
if (tw_dev->pending_request_count == 0) |
|
TW_MASK_COMMAND_INTERRUPT(tw_dev); |
|
} |
|
|
|
/* Handle response interrupt */ |
|
if (status_reg_value & TW_STATUS_RESPONSE_INTERRUPT) { |
|
/* Drain the response queue from the board */ |
|
while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { |
|
/* Read response queue register */ |
|
response_que.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
|
request_id = TW_RESID_OUT(response_que.response_id); |
|
command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
|
error = 0; |
|
|
|
/* Check for bad response */ |
|
if (command_packet->status != 0) { |
|
/* If internal command, don't error, don't fill sense */ |
|
if (tw_dev->srb[request_id] == NULL) { |
|
tw_decode_sense(tw_dev, request_id, 0); |
|
} else { |
|
error = tw_decode_sense(tw_dev, request_id, 1); |
|
} |
|
} |
|
|
|
/* Check for correct state */ |
|
if (tw_dev->state[request_id] != TW_S_POSTED) { |
|
if (tw_dev->srb[request_id] != NULL) { |
|
printk(KERN_WARNING "3w-xxxx: scsi%d: Received a request id that wasn't posted.\n", tw_dev->host->host_no); |
|
error = 1; |
|
} |
|
} |
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Response queue request id: %d.\n", request_id); |
|
|
|
/* Check for internal command completion */ |
|
if (tw_dev->srb[request_id] == NULL) { |
|
dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Found internally posted command.\n"); |
|
/* Check for chrdev ioctl completion */ |
|
if (request_id != tw_dev->chrdev_request_id) { |
|
retval = tw_aen_complete(tw_dev, request_id); |
|
if (retval) { |
|
printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing aen.\n", tw_dev->host->host_no); |
|
} |
|
} else { |
|
tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; |
|
wake_up(&tw_dev->ioctl_wqueue); |
|
} |
|
} else { |
|
switch (tw_dev->srb[request_id]->cmnd[0]) { |
|
case READ_10: |
|
case READ_6: |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_10/READ_6\n"); |
|
break; |
|
case WRITE_10: |
|
case WRITE_6: |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught WRITE_10/WRITE_6\n"); |
|
break; |
|
case TEST_UNIT_READY: |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught TEST_UNIT_READY\n"); |
|
error = tw_scsiop_test_unit_ready_complete(tw_dev, request_id); |
|
break; |
|
case INQUIRY: |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught INQUIRY\n"); |
|
error = tw_scsiop_inquiry_complete(tw_dev, request_id); |
|
break; |
|
case READ_CAPACITY: |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_CAPACITY\n"); |
|
error = tw_scsiop_read_capacity_complete(tw_dev, request_id); |
|
break; |
|
case MODE_SENSE: |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught MODE_SENSE\n"); |
|
error = tw_scsiop_mode_sense_complete(tw_dev, request_id); |
|
break; |
|
case SYNCHRONIZE_CACHE: |
|
dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught SYNCHRONIZE_CACHE\n"); |
|
break; |
|
default: |
|
printk(KERN_WARNING "3w-xxxx: case slip in tw_interrupt()\n"); |
|
error = 1; |
|
} |
|
|
|
/* If no error command was a success */ |
|
if (error == 0) { |
|
tw_dev->srb[request_id]->result = (DID_OK << 16); |
|
} |
|
|
|
/* If error, command failed */ |
|
if (error == 1) { |
|
/* Ask for a host reset */ |
|
tw_dev->srb[request_id]->result = (DID_OK << 16) | SAM_STAT_CHECK_CONDITION; |
|
} |
|
|
|
/* Now complete the io */ |
|
if ((error != TW_ISR_DONT_COMPLETE)) { |
|
scsi_dma_unmap(tw_dev->srb[request_id]); |
|
scsi_done(tw_dev->srb[request_id]); |
|
tw_dev->state[request_id] = TW_S_COMPLETED; |
|
tw_state_request_finish(tw_dev, request_id); |
|
tw_dev->posted_request_count--; |
|
} |
|
} |
|
|
|
/* Check for valid status after each drain */ |
|
status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
|
if (tw_check_bits(status_reg_value)) { |
|
dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n"); |
|
if (tw_decode_bits(tw_dev, status_reg_value, 1)) { |
|
TW_CLEAR_ALL_INTERRUPTS(tw_dev); |
|
goto tw_interrupt_bail; |
|
} |
|
} |
|
} |
|
} |
|
|
|
tw_interrupt_bail: |
|
spin_unlock(tw_dev->host->host_lock); |
|
return IRQ_RETVAL(handled); |
|
} /* End tw_interrupt() */ |
|
|
|
/* This function tells the controller to shut down */ |
|
static void __tw_shutdown(TW_Device_Extension *tw_dev) |
|
{ |
|
/* Disable interrupts */ |
|
TW_DISABLE_INTERRUPTS(tw_dev); |
|
|
|
/* Free up the IRQ */ |
|
free_irq(tw_dev->tw_pci_dev->irq, tw_dev); |
|
|
|
printk(KERN_WARNING "3w-xxxx: Shutting down host %d.\n", tw_dev->host->host_no); |
|
|
|
/* Tell the card we are shutting down */ |
|
if (tw_initconnection(tw_dev, 1)) { |
|
printk(KERN_WARNING "3w-xxxx: Connection shutdown failed.\n"); |
|
} else { |
|
printk(KERN_WARNING "3w-xxxx: Shutdown complete.\n"); |
|
} |
|
|
|
/* Clear all interrupts just before exit */ |
|
TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); |
|
} /* End __tw_shutdown() */ |
|
|
|
/* Wrapper for __tw_shutdown */ |
|
static void tw_shutdown(struct pci_dev *pdev) |
|
{ |
|
struct Scsi_Host *host = pci_get_drvdata(pdev); |
|
TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
|
|
|
__tw_shutdown(tw_dev); |
|
} /* End tw_shutdown() */ |
|
|
|
/* This function gets called when a disk is coming online */ |
|
static int tw_slave_configure(struct scsi_device *sdev) |
|
{ |
|
/* Force 60 second timeout */ |
|
blk_queue_rq_timeout(sdev->request_queue, 60 * HZ); |
|
|
|
return 0; |
|
} /* End tw_slave_configure() */ |
|
|
|
static struct scsi_host_template driver_template = { |
|
.module = THIS_MODULE, |
|
.name = "3ware Storage Controller", |
|
.queuecommand = tw_scsi_queue, |
|
.eh_host_reset_handler = tw_scsi_eh_reset, |
|
.bios_param = tw_scsi_biosparam, |
|
.change_queue_depth = scsi_change_queue_depth, |
|
.can_queue = TW_Q_LENGTH-2, |
|
.slave_configure = tw_slave_configure, |
|
.this_id = -1, |
|
.sg_tablesize = TW_MAX_SGL_LENGTH, |
|
.max_sectors = TW_MAX_SECTORS, |
|
.cmd_per_lun = TW_MAX_CMDS_PER_LUN, |
|
.shost_groups = tw_host_groups, |
|
.emulated = 1, |
|
.no_write_same = 1, |
|
}; |
|
|
|
/* This function will probe and initialize a card */ |
|
static int tw_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) |
|
{ |
|
struct Scsi_Host *host = NULL; |
|
TW_Device_Extension *tw_dev; |
|
int retval; |
|
|
|
retval = pci_enable_device(pdev); |
|
if (retval) { |
|
printk(KERN_WARNING "3w-xxxx: Failed to enable pci device."); |
|
goto out_disable_device; |
|
} |
|
|
|
pci_set_master(pdev); |
|
|
|
retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
|
if (retval) { |
|
printk(KERN_WARNING "3w-xxxx: Failed to set dma mask."); |
|
goto out_disable_device; |
|
} |
|
|
|
host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension)); |
|
if (!host) { |
|
printk(KERN_WARNING "3w-xxxx: Failed to allocate memory for device extension."); |
|
retval = -ENOMEM; |
|
goto out_disable_device; |
|
} |
|
tw_dev = (TW_Device_Extension *)host->hostdata; |
|
|
|
/* Save values to device extension */ |
|
tw_dev->host = host; |
|
tw_dev->tw_pci_dev = pdev; |
|
|
|
if (tw_initialize_device_extension(tw_dev)) { |
|
printk(KERN_WARNING "3w-xxxx: Failed to initialize device extension."); |
|
retval = -ENOMEM; |
|
goto out_free_device_extension; |
|
} |
|
|
|
/* Request IO regions */ |
|
retval = pci_request_regions(pdev, "3w-xxxx"); |
|
if (retval) { |
|
printk(KERN_WARNING "3w-xxxx: Failed to get mem region."); |
|
goto out_free_device_extension; |
|
} |
|
|
|
/* Save base address */ |
|
tw_dev->base_addr = pci_resource_start(pdev, 0); |
|
if (!tw_dev->base_addr) { |
|
printk(KERN_WARNING "3w-xxxx: Failed to get io address."); |
|
retval = -ENOMEM; |
|
goto out_release_mem_region; |
|
} |
|
|
|
/* Disable interrupts on the card */ |
|
TW_DISABLE_INTERRUPTS(tw_dev); |
|
|
|
/* Initialize the card */ |
|
if (tw_reset_sequence(tw_dev)) |
|
goto out_release_mem_region; |
|
|
|
/* Set host specific parameters */ |
|
host->max_id = TW_MAX_UNITS; |
|
host->max_cmd_len = TW_MAX_CDB_LEN; |
|
|
|
/* Luns and channels aren't supported by adapter */ |
|
host->max_lun = 0; |
|
host->max_channel = 0; |
|
|
|
/* Register the card with the kernel SCSI layer */ |
|
retval = scsi_add_host(host, &pdev->dev); |
|
if (retval) { |
|
printk(KERN_WARNING "3w-xxxx: scsi add host failed"); |
|
goto out_release_mem_region; |
|
} |
|
|
|
pci_set_drvdata(pdev, host); |
|
|
|
printk(KERN_WARNING "3w-xxxx: scsi%d: Found a 3ware Storage Controller at 0x%x, IRQ: %d.\n", host->host_no, tw_dev->base_addr, pdev->irq); |
|
|
|
/* Now setup the interrupt handler */ |
|
retval = request_irq(pdev->irq, tw_interrupt, IRQF_SHARED, "3w-xxxx", tw_dev); |
|
if (retval) { |
|
printk(KERN_WARNING "3w-xxxx: Error requesting IRQ."); |
|
goto out_remove_host; |
|
} |
|
|
|
tw_device_extension_list[tw_device_extension_count] = tw_dev; |
|
tw_device_extension_count++; |
|
|
|
/* Re-enable interrupts on the card */ |
|
TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); |
|
|
|
/* Finally, scan the host */ |
|
scsi_scan_host(host); |
|
|
|
if (twe_major == -1) { |
|
if ((twe_major = register_chrdev (0, "twe", &tw_fops)) < 0) |
|
printk(KERN_WARNING "3w-xxxx: Failed to register character device."); |
|
} |
|
return 0; |
|
|
|
out_remove_host: |
|
scsi_remove_host(host); |
|
out_release_mem_region: |
|
pci_release_regions(pdev); |
|
out_free_device_extension: |
|
tw_free_device_extension(tw_dev); |
|
scsi_host_put(host); |
|
out_disable_device: |
|
pci_disable_device(pdev); |
|
|
|
return retval; |
|
} /* End tw_probe() */ |
|
|
|
/* This function is called to remove a device */ |
|
static void tw_remove(struct pci_dev *pdev) |
|
{ |
|
struct Scsi_Host *host = pci_get_drvdata(pdev); |
|
TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
|
|
|
scsi_remove_host(tw_dev->host); |
|
|
|
/* Unregister character device */ |
|
if (twe_major >= 0) { |
|
unregister_chrdev(twe_major, "twe"); |
|
twe_major = -1; |
|
} |
|
|
|
/* Shutdown the card */ |
|
__tw_shutdown(tw_dev); |
|
|
|
/* Free up the mem region */ |
|
pci_release_regions(pdev); |
|
|
|
/* Free up device extension resources */ |
|
tw_free_device_extension(tw_dev); |
|
|
|
scsi_host_put(tw_dev->host); |
|
pci_disable_device(pdev); |
|
tw_device_extension_count--; |
|
} /* End tw_remove() */ |
|
|
|
/* PCI Devices supported by this driver */ |
|
static struct pci_device_id tw_pci_tbl[] = { |
|
{ PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_1000, |
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
|
{ PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_7000, |
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(pci, tw_pci_tbl); |
|
|
|
/* pci_driver initializer */ |
|
static struct pci_driver tw_driver = { |
|
.name = "3w-xxxx", |
|
.id_table = tw_pci_tbl, |
|
.probe = tw_probe, |
|
.remove = tw_remove, |
|
.shutdown = tw_shutdown, |
|
}; |
|
|
|
/* This function is called on driver initialization */ |
|
static int __init tw_init(void) |
|
{ |
|
printk(KERN_WARNING "3ware Storage Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION); |
|
|
|
return pci_register_driver(&tw_driver); |
|
} /* End tw_init() */ |
|
|
|
/* This function is called on driver exit */ |
|
static void __exit tw_exit(void) |
|
{ |
|
pci_unregister_driver(&tw_driver); |
|
} /* End tw_exit() */ |
|
|
|
module_init(tw_init); |
|
module_exit(tw_exit); |
|
|
|
|