mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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7b14f58ad6
This patch fixes the following regression that occurred during the scsi_dma_map()/unmap() changes when compiling with CONFIG_DMA_API_DEBUG=y : WARNING: at lib/dma-debug.c:496 check_unmap+0x142/0x542() Hardware name: 3w-xxxx 0000:02:02.0: DMA-API: device driver tries to free DMA memory it has not allocated [device address=0x0000000000000000] [size=36 bytes] Signed-off-by: Adam Radford <aradford@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2437 lines
83 KiB
C
2437 lines
83 KiB
C
/*
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3w-xxxx.c -- 3ware Storage Controller device driver for Linux.
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Written By: Adam Radford <linuxraid@amcc.com>
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Modifications By: Joel Jacobson <linux@3ware.com>
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Arnaldo Carvalho de Melo <acme@conectiva.com.br>
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Brad Strand <linux@3ware.com>
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Copyright (C) 1999-2009 3ware Inc.
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Kernel compatiblity By: Andre Hedrick <andre@suse.com>
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Non-Copyright (C) 2000 Andre Hedrick <andre@suse.com>
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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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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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linuxraid@amcc.com
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For more information, goto:
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http://www.amcc.com
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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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*/
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#include <linux/module.h>
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#include <linux/reboot.h>
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#include <linux/smp_lock.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/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 <asm/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 "3w-xxxx.h"
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/* Globals */
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#define TW_DRIVER_VERSION "1.26.02.002"
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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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/* Module parameters */
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MODULE_AUTHOR("AMCC");
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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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/* 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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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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/* 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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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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/* 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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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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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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/* 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++) {
|
|
if (command->flags == tw_sense_table[i][0]) {
|
|
|
|
/* Valid bit and 'current errors' */
|
|
tw_dev->srb[request_id]->sense_buffer[0] = (0x1 << 7 | 0x70);
|
|
|
|
/* Sense key */
|
|
tw_dev->srb[request_id]->sense_buffer[2] = tw_sense_table[i][1];
|
|
|
|
/* Additional sense length */
|
|
tw_dev->srb[request_id]->sense_buffer[7] = 0xa; /* 10 bytes */
|
|
|
|
/* Additional sense code */
|
|
tw_dev->srb[request_id]->sense_buffer[12] = tw_sense_table[i][2];
|
|
|
|
/* Additional sense code qualifier */
|
|
tw_dev->srb[request_id]->sense_buffer[13] = tw_sense_table[i][3];
|
|
|
|
tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
|
|
return TW_ISR_DONT_RESULT; /* Special case for isr to not over-write result */
|
|
}
|
|
}
|
|
}
|
|
|
|
/* If no table match, error so we get a reset */
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
} /* End tw_decode_sense() */
|
|
|
|
/* This function will report controller error status */
|
|
static int tw_check_errors(TW_Device_Extension *tw_dev)
|
|
{
|
|
u32 status_reg_value;
|
|
|
|
status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
|
|
|
|
if (TW_STATUS_ERRORS(status_reg_value) || tw_check_bits(status_reg_value)) {
|
|
tw_decode_bits(tw_dev, status_reg_value, 0);
|
|
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, response_que_value;
|
|
|
|
status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
|
|
|
|
while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) {
|
|
response_que_value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
|
|
status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
|
|
}
|
|
} /* 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() */
|
|
|
|
/* This function will set a devices queue depth */
|
|
static int tw_change_queue_depth(struct scsi_device *sdev, int queue_depth)
|
|
{
|
|
if (queue_depth > TW_Q_LENGTH-2)
|
|
queue_depth = TW_Q_LENGTH-2;
|
|
scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
|
|
return queue_depth;
|
|
} /* End tw_change_queue_depth() */
|
|
|
|
/* 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 device_attribute *tw_host_attrs[] = {
|
|
&tw_host_stats_attr,
|
|
NULL,
|
|
};
|
|
|
|
/* 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 = pci_alloc_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, &dma_handle);
|
|
if (cpu_addr == NULL) {
|
|
printk(KERN_WARNING "3w-xxxx: pci_alloc_consistent() 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");
|
|
pci_free_consistent(tw_dev->tw_pci_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 int tw_chrdev_ioctl(struct inode *inode, 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;
|
|
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");
|
|
|
|
/* Only let one of these through at a time */
|
|
if (mutex_lock_interruptible(&tw_dev->ioctl_lock))
|
|
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) - 1, &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) - 1))
|
|
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) - 1;
|
|
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) - 1;
|
|
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) - 1;
|
|
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 - 1))
|
|
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) - 1, cpu_addr, dma_handle);
|
|
out:
|
|
mutex_unlock(&tw_dev->ioctl_lock);
|
|
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;
|
|
|
|
cycle_kernel_lock();
|
|
dprintk(KERN_WARNING "3w-xxxx: tw_ioctl_open()\n");
|
|
|
|
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,
|
|
.ioctl = tw_chrdev_ioctl,
|
|
.open = tw_chrdev_open,
|
|
.release = NULL
|
|
};
|
|
|
|
/* 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])
|
|
pci_free_consistent(tw_dev->tw_pci_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])
|
|
pci_free_consistent(tw_dev->tw_pci_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);
|
|
tw_dev->srb[request_id]->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() */
|
|
|
|
static int tw_map_scsi_sg_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
|
|
{
|
|
int use_sg;
|
|
|
|
dprintk(KERN_WARNING "3w-xxxx: tw_map_scsi_sg_data()\n");
|
|
|
|
use_sg = scsi_dma_map(cmd);
|
|
if (use_sg < 0) {
|
|
printk(KERN_WARNING "3w-xxxx: tw_map_scsi_sg_data(): pci_map_sg() failed.\n");
|
|
return 0;
|
|
}
|
|
|
|
cmd->SCp.phase = TW_PHASE_SGLIST;
|
|
cmd->SCp.have_data_in = use_sg;
|
|
|
|
return use_sg;
|
|
} /* End tw_map_scsi_sg_data() */
|
|
|
|
static void tw_unmap_scsi_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
|
|
{
|
|
dprintk(KERN_WARNING "3w-xxxx: tw_unmap_scsi_data()\n");
|
|
|
|
if (cmd->SCp.phase == TW_PHASE_SGLIST)
|
|
scsi_dma_unmap(cmd);
|
|
} /* End tw_unmap_scsi_data() */
|
|
|
|
/* 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);
|
|
tw_dev->srb[i]->scsi_done(tw_dev->srb[i]);
|
|
tw_unmap_scsi_data(tw_dev->tw_pci_dev, tw_dev->srb[i]);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* 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;
|
|
TW_Device_Extension *tw_dev;
|
|
|
|
dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam()\n");
|
|
tw_dev = (TW_Device_Extension *)sdev->host->hostdata;
|
|
|
|
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);
|
|
tw_dev->srb[request_id]->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 = tw_map_scsi_sg_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]);
|
|
if (!use_sg)
|
|
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);
|
|
tw_dev->srb[request_id]->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(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
|
|
{
|
|
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;
|
|
|
|
/* Save done function into Scsi_Cmnd struct */
|
|
SCpnt->scsi_done = done;
|
|
|
|
/* 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;
|
|
|
|
/* Initialize phase to zero */
|
|
SCpnt->SCp.phase = TW_PHASE_INITIAL;
|
|
|
|
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);
|
|
SCpnt->result = (DID_BAD_TARGET << 16);
|
|
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() */
|
|
|
|
/* 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) | (CHECK_CONDITION << 1);
|
|
}
|
|
|
|
/* Now complete the io */
|
|
if ((error != TW_ISR_DONT_COMPLETE)) {
|
|
tw_dev->state[request_id] = TW_S_COMPLETED;
|
|
tw_state_request_finish(tw_dev, request_id);
|
|
tw_dev->posted_request_count--;
|
|
tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
|
|
|
|
tw_unmap_scsi_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]);
|
|
}
|
|
}
|
|
|
|
/* 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() */
|
|
|
|
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 = tw_change_queue_depth,
|
|
.can_queue = TW_Q_LENGTH-2,
|
|
.this_id = -1,
|
|
.sg_tablesize = TW_MAX_SGL_LENGTH,
|
|
.max_sectors = TW_MAX_SECTORS,
|
|
.cmd_per_lun = TW_MAX_CMDS_PER_LUN,
|
|
.use_clustering = ENABLE_CLUSTERING,
|
|
.shost_attrs = tw_host_attrs,
|
|
.emulated = 1
|
|
};
|
|
|
|
/* This function will probe and initialize a card */
|
|
static int __devinit 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 = -ENODEV;
|
|
|
|
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 = pci_set_dma_mask(pdev, TW_DMA_MASK);
|
|
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.");
|
|
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.");
|
|
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[] __devinitdata = {
|
|
{ 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);
|
|
|