diff options
| -rw-r--r-- | drivers/message/fusion/mptfc.c | 428 |
1 files changed, 428 insertions, 0 deletions
diff --git a/drivers/message/fusion/mptfc.c b/drivers/message/fusion/mptfc.c new file mode 100644 index 000000000000..91c79e525d3c --- /dev/null +++ b/drivers/message/fusion/mptfc.c @@ -0,0 +1,428 @@ +/* + * linux/drivers/message/fusion/mptfc.c + * For use with LSI Logic PCI chip/adapter(s) + * running LSI Logic Fusion MPT (Message Passing Technology) firmware. + * + * Copyright (c) 1999-2005 LSI Logic Corporation + * (mailto:mpt_linux_developer@lsil.com) + * + */ +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; version 2 of the License. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + NO WARRANTY + THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR + CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT + LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, + MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is + solely responsible for determining the appropriateness of using and + distributing the Program and assumes all risks associated with its + exercise of rights under this Agreement, including but not limited to + the risks and costs of program errors, damage to or loss of data, + programs or equipment, and unavailability or interruption of operations. + + DISCLAIMER OF LIABILITY + NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY + DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND + ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR + TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE + USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED + HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +#include "linux_compat.h" /* linux-2.6 tweaks */ +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/kdev_t.h> +#include <linux/blkdev.h> +#include <linux/delay.h> /* for mdelay */ +#include <linux/interrupt.h> /* needed for in_interrupt() proto */ +#include <linux/reboot.h> /* notifier code */ +#include <linux/sched.h> +#include <linux/workqueue.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_tcq.h> + +#include "mptbase.h" +#include "mptscsih.h" + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +#define my_NAME "Fusion MPT FC Host driver" +#define my_VERSION MPT_LINUX_VERSION_COMMON +#define MYNAM "mptfc" + +MODULE_AUTHOR(MODULEAUTHOR); +MODULE_DESCRIPTION(my_NAME); +MODULE_LICENSE("GPL"); + +/* Command line args */ +static int mpt_pq_filter = 0; +module_param(mpt_pq_filter, int, 0); +MODULE_PARM_DESC(mpt_pq_filter, " Enable peripheral qualifier filter: enable=1 (default=0)"); + +static int mptfcDoneCtx = -1; +static int mptfcTaskCtx = -1; +static int mptfcInternalCtx = -1; /* Used only for internal commands */ + +static struct device_attribute mptfc_queue_depth_attr = { + .attr = { + .name = "queue_depth", + .mode = S_IWUSR, + }, + .store = mptscsih_store_queue_depth, +}; + +static struct device_attribute *mptfc_dev_attrs[] = { + &mptfc_queue_depth_attr, + NULL, +}; + +static struct scsi_host_template mptfc_driver_template = { + .proc_name = "mptfc", + .proc_info = mptscsih_proc_info, + .name = "MPT FC Host", + .info = mptscsih_info, + .queuecommand = mptscsih_qcmd, + .slave_alloc = mptscsih_slave_alloc, + .slave_configure = mptscsih_slave_configure, + .slave_destroy = mptscsih_slave_destroy, + .eh_abort_handler = mptscsih_abort, + .eh_device_reset_handler = mptscsih_dev_reset, + .eh_bus_reset_handler = mptscsih_bus_reset, + .eh_host_reset_handler = mptscsih_host_reset, + .bios_param = mptscsih_bios_param, + .can_queue = MPT_FC_CAN_QUEUE, + .this_id = -1, + .sg_tablesize = MPT_SCSI_SG_DEPTH, + .max_sectors = 8192, + .cmd_per_lun = 7, + .use_clustering = ENABLE_CLUSTERING, + .sdev_attrs = mptfc_dev_attrs, +}; + +/**************************************************************************** + * Supported hardware + */ + +static struct pci_device_id mptfc_pci_table[] = { + { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC909, + PCI_ANY_ID, PCI_ANY_ID }, + { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919, + PCI_ANY_ID, PCI_ANY_ID }, + { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929, + PCI_ANY_ID, PCI_ANY_ID }, + { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919X, + PCI_ANY_ID, PCI_ANY_ID }, + { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929X, + PCI_ANY_ID, PCI_ANY_ID }, + {0} /* Terminating entry */ +}; +MODULE_DEVICE_TABLE(pci, mptfc_pci_table); + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* + * mptfc_probe - Installs scsi devices per bus. + * @pdev: Pointer to pci_dev structure + * + * Returns 0 for success, non-zero for failure. + * + */ +static int +mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id) +{ + struct Scsi_Host *sh; + MPT_SCSI_HOST *hd; + MPT_ADAPTER *ioc; + unsigned long flags; + int sz, ii; + int numSGE = 0; + int scale; + int ioc_cap; + u8 *mem; + int error=0; + int r; + + if ((r = mpt_attach(pdev,id)) != 0) + return r; + + ioc = pci_get_drvdata(pdev); + + /* Added sanity check on readiness of the MPT adapter. + */ + if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) { + printk(MYIOC_s_WARN_FMT + "Skipping because it's not operational!\n", + ioc->name); + return -ENODEV; + } + + if (!ioc->active) { + printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n", + ioc->name); + return -ENODEV; + } + + /* Sanity check - ensure at least 1 port is INITIATOR capable + */ + ioc_cap = 0; + for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) { + if (ioc->pfacts[ii].ProtocolFlags & + MPI_PORTFACTS_PROTOCOL_INITIATOR) + ioc_cap ++; + } + + if (!ioc_cap) { + printk(MYIOC_s_WARN_FMT + "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n", + ioc->name, ioc); + return -ENODEV; + } + + sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST)); + + if (!sh) { + printk(MYIOC_s_WARN_FMT + "Unable to register controller with SCSI subsystem\n", + ioc->name); + return -1; + } + + spin_lock_irqsave(&ioc->FreeQlock, flags); + + /* Attach the SCSI Host to the IOC structure + */ + ioc->sh = sh; + + sh->io_port = 0; + sh->n_io_port = 0; + sh->irq = 0; + + /* set 16 byte cdb's */ + sh->max_cmd_len = 16; + + sh->max_id = MPT_MAX_FC_DEVICES<256 ? MPT_MAX_FC_DEVICES : 255; + + sh->max_lun = MPT_LAST_LUN + 1; + sh->max_channel = 0; + sh->this_id = ioc->pfacts[0].PortSCSIID; + + /* Required entry. + */ + sh->unique_id = ioc->id; + + /* Verify that we won't exceed the maximum + * number of chain buffers + * We can optimize: ZZ = req_sz/sizeof(SGE) + * For 32bit SGE's: + * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ + * + (req_sz - 64)/sizeof(SGE) + * A slightly different algorithm is required for + * 64bit SGEs. + */ + scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32)); + if (sizeof(dma_addr_t) == sizeof(u64)) { + numSGE = (scale - 1) * + (ioc->facts.MaxChainDepth-1) + scale + + (ioc->req_sz - 60) / (sizeof(dma_addr_t) + + sizeof(u32)); + } else { + numSGE = 1 + (scale - 1) * + (ioc->facts.MaxChainDepth-1) + scale + + (ioc->req_sz - 64) / (sizeof(dma_addr_t) + + sizeof(u32)); + } + + if (numSGE < sh->sg_tablesize) { + /* Reset this value */ + dprintk((MYIOC_s_INFO_FMT + "Resetting sg_tablesize to %d from %d\n", + ioc->name, numSGE, sh->sg_tablesize)); + sh->sg_tablesize = numSGE; + } + + /* Set the pci device pointer in Scsi_Host structure. + */ + scsi_set_device(sh, &ioc->pcidev->dev); + + spin_unlock_irqrestore(&ioc->FreeQlock, flags); + + hd = (MPT_SCSI_HOST *) sh->hostdata; + hd->ioc = ioc; + + /* SCSI needs scsi_cmnd lookup table! + * (with size equal to req_depth*PtrSz!) + */ + sz = ioc->req_depth * sizeof(void *); + mem = kmalloc(sz, GFP_ATOMIC); + if (mem == NULL) { + error = -ENOMEM; + goto mptfc_probe_failed; + } + + memset(mem, 0, sz); + hd->ScsiLookup = (struct scsi_cmnd **) mem; + + dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p, sz=%d\n", + ioc->name, hd->ScsiLookup, sz)); + + /* Allocate memory for the device structures. + * A non-Null pointer at an offset + * indicates a device exists. + * max_id = 1 + maximum id (hosts.h) + */ + sz = sh->max_id * sizeof(void *); + mem = kmalloc(sz, GFP_ATOMIC); + if (mem == NULL) { + error = -ENOMEM; + goto mptfc_probe_failed; + } + + memset(mem, 0, sz); + hd->Targets = (VirtDevice **) mem; + + dprintk((KERN_INFO + " Targets @ %p, sz=%d\n", hd->Targets, sz)); + + /* Clear the TM flags + */ + hd->tmPending = 0; + hd->tmState = TM_STATE_NONE; + hd->resetPending = 0; + hd->abortSCpnt = NULL; + + /* Clear the pointer used to store + * single-threaded commands, i.e., those + * issued during a bus scan, dv and + * configuration pages. + */ + hd->cmdPtr = NULL; + + /* Initialize this SCSI Hosts' timers + * To use, set the timer expires field + * and add_timer + */ + init_timer(&hd->timer); + hd->timer.data = (unsigned long) hd; + hd->timer.function = mptscsih_timer_expired; + + ioc->DoneCtx = mptfcDoneCtx; + ioc->TaskCtx = mptfcTaskCtx; + ioc->InternalCtx = mptfcInternalCtx; + + hd->mpt_pq_filter = mpt_pq_filter; + + ddvprintk((MYIOC_s_INFO_FMT + "mpt_pq_filter %x\n", + ioc->name, + mpt_pq_filter)); + + init_waitqueue_head(&hd->scandv_waitq); + hd->scandv_wait_done = 0; + hd->last_queue_full = 0; + + error = scsi_add_host (sh, &ioc->pcidev->dev); + if(error) { + dprintk((KERN_ERR MYNAM + "scsi_add_host failed\n")); + goto mptfc_probe_failed; + } + + scsi_scan_host(sh); + return 0; + +mptfc_probe_failed: + + mptscsih_remove(pdev); + return error; +} + +static struct pci_driver mptfc_driver = { + .name = "mptfc", + .id_table = mptfc_pci_table, + .probe = mptfc_probe, + .remove = __devexit_p(mptscsih_remove), + .driver = { + .shutdown = mptscsih_shutdown, + }, +#ifdef CONFIG_PM + .suspend = mptscsih_suspend, + .resume = mptscsih_resume, +#endif +}; + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/** + * mptfc_init - Register MPT adapter(s) as SCSI host(s) with + * linux scsi mid-layer. + * + * Returns 0 for success, non-zero for failure. + */ +static int __init +mptfc_init(void) +{ + + show_mptmod_ver(my_NAME, my_VERSION); + + mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER); + mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER); + mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER); + + if (mpt_event_register(mptfcDoneCtx, mptscsih_event_process) == 0) { + devtprintk((KERN_INFO MYNAM + ": Registered for IOC event notifications\n")); + } + + if (mpt_reset_register(mptfcDoneCtx, mptscsih_ioc_reset) == 0) { + dprintk((KERN_INFO MYNAM + ": Registered for IOC reset notifications\n")); + } + + return pci_register_driver(&mptfc_driver); +} + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/** + * mptfc_exit - Unregisters MPT adapter(s) + * + */ +static void __exit +mptfc_exit(void) +{ + pci_unregister_driver(&mptfc_driver); + + mpt_reset_deregister(mptfcDoneCtx); + dprintk((KERN_INFO MYNAM + ": Deregistered for IOC reset notifications\n")); + + mpt_event_deregister(mptfcDoneCtx); + dprintk((KERN_INFO MYNAM + ": Deregistered for IOC event notifications\n")); + + mpt_deregister(mptfcInternalCtx); + mpt_deregister(mptfcTaskCtx); + mpt_deregister(mptfcDoneCtx); +} + +module_init(mptfc_init); +module_exit(mptfc_exit); |