--- /dev/null
+/*
+ * 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 <linux/sort.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 <scsi/scsi_transport_fc.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)");
+
+#define MPTFC_DEV_LOSS_TMO (60)
+static int mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO; /* reasonable default */
+module_param(mptfc_dev_loss_tmo, int, 0);
+MODULE_PARM_DESC(mptfc_dev_loss_tmo, " Initial time the driver programs the "
+ " transport to wait for an rport to "
+ " return following a device loss event."
+ " Default=60.");
+
+static int mptfcDoneCtx = -1;
+static int mptfcTaskCtx = -1;
+static int mptfcInternalCtx = -1; /* Used only for internal commands */
+
+static int mptfc_target_alloc(struct scsi_target *starget);
+static int mptfc_slave_alloc(struct scsi_device *sdev);
+static int mptfc_qcmd(struct scsi_cmnd *SCpnt,
+ void (*done)(struct scsi_cmnd *));
+static void mptfc_target_destroy(struct scsi_target *starget);
+static void mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout);
+static void __devexit mptfc_remove(struct pci_dev *pdev);
+
+static struct scsi_host_template mptfc_driver_template = {
+ .module = THIS_MODULE,
+ .proc_name = "mptfc",
+ .proc_info = mptscsih_proc_info,
+ .name = "MPT FC Host",
+ .info = mptscsih_info,
+ .queuecommand = mptfc_qcmd,
+ .target_alloc = mptfc_target_alloc,
+ .slave_alloc = mptfc_slave_alloc,
+ .slave_configure = mptscsih_slave_configure,
+ .target_destroy = mptfc_target_destroy,
+ .slave_destroy = mptscsih_slave_destroy,
+ .change_queue_depth = mptscsih_change_queue_depth,
+ .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,
+};
+
+/****************************************************************************
+ * 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 },
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC939X,
+ PCI_ANY_ID, PCI_ANY_ID },
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC949X,
+ PCI_ANY_ID, PCI_ANY_ID },
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC949ES,
+ PCI_ANY_ID, PCI_ANY_ID },
+ {0} /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(pci, mptfc_pci_table);
+
+static struct scsi_transport_template *mptfc_transport_template = NULL;
+
+static struct fc_function_template mptfc_transport_functions = {
+ .dd_fcrport_size = 8,
+ .show_host_node_name = 1,
+ .show_host_port_name = 1,
+ .show_host_supported_classes = 1,
+ .show_host_port_id = 1,
+ .show_rport_supported_classes = 1,
+ .show_starget_node_name = 1,
+ .show_starget_port_name = 1,
+ .show_starget_port_id = 1,
+ .set_rport_dev_loss_tmo = mptfc_set_rport_loss_tmo,
+ .show_rport_dev_loss_tmo = 1,
+
+};
+
+/* FIXME! values controlling firmware RESCAN event
+ * need to be set low to allow dev_loss_tmo to
+ * work as expected. Currently, firmware doesn't
+ * notify driver of RESCAN event until some number
+ * of seconds elapse. This value can be set via
+ * lsiutil.
+ */
+static void
+mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
+{
+ if (timeout > 0)
+ rport->dev_loss_tmo = timeout;
+ else
+ rport->dev_loss_tmo = mptfc_dev_loss_tmo;
+}
+
+static int
+mptfc_FcDevPage0_cmp_func(const void *a, const void *b)
+{
+ FCDevicePage0_t **aa = (FCDevicePage0_t **)a;
+ FCDevicePage0_t **bb = (FCDevicePage0_t **)b;
+
+ if ((*aa)->CurrentBus == (*bb)->CurrentBus) {
+ if ((*aa)->CurrentTargetID == (*bb)->CurrentTargetID)
+ return 0;
+ if ((*aa)->CurrentTargetID < (*bb)->CurrentTargetID)
+ return -1;
+ return 1;
+ }
+ if ((*aa)->CurrentBus < (*bb)->CurrentBus)
+ return -1;
+ return 1;
+}
+
+static int
+mptfc_GetFcDevPage0(MPT_ADAPTER *ioc, int ioc_port,
+ void(*func)(MPT_ADAPTER *ioc,int channel, FCDevicePage0_t *arg))
+{
+ ConfigPageHeader_t hdr;
+ CONFIGPARMS cfg;
+ FCDevicePage0_t *ppage0_alloc, *fc;
+ dma_addr_t page0_dma;
+ int data_sz;
+ int ii;
+
+ FCDevicePage0_t *p0_array=NULL, *p_p0;
+ FCDevicePage0_t **pp0_array=NULL, **p_pp0;
+
+ int rc = -ENOMEM;
+ U32 port_id = 0xffffff;
+ int num_targ = 0;
+ int max_bus = ioc->facts.MaxBuses;
+ int max_targ = ioc->facts.MaxDevices;
+
+ if (max_bus == 0 || max_targ == 0)
+ goto out;
+
+ data_sz = sizeof(FCDevicePage0_t) * max_bus * max_targ;
+ p_p0 = p0_array = kzalloc(data_sz, GFP_KERNEL);
+ if (!p0_array)
+ goto out;
+
+ data_sz = sizeof(FCDevicePage0_t *) * max_bus * max_targ;
+ p_pp0 = pp0_array = kzalloc(data_sz, GFP_KERNEL);
+ if (!pp0_array)
+ goto out;
+
+ do {
+ /* Get FC Device Page 0 header */
+ hdr.PageVersion = 0;
+ hdr.PageLength = 0;
+ hdr.PageNumber = 0;
+ hdr.PageType = MPI_CONFIG_PAGETYPE_FC_DEVICE;
+ cfg.cfghdr.hdr = &hdr;
+ cfg.physAddr = -1;
+ cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
+ cfg.dir = 0;
+ cfg.pageAddr = port_id;
+ cfg.timeout = 0;
+
+ if ((rc = mpt_config(ioc, &cfg)) != 0)
+ break;
+
+ if (hdr.PageLength <= 0)
+ break;
+
+ data_sz = hdr.PageLength * 4;
+ ppage0_alloc = pci_alloc_consistent(ioc->pcidev, data_sz,
+ &page0_dma);
+ rc = -ENOMEM;
+ if (!ppage0_alloc)
+ break;
+
+ cfg.physAddr = page0_dma;
+ cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
+
+ if ((rc = mpt_config(ioc, &cfg)) == 0) {
+ ppage0_alloc->PortIdentifier =
+ le32_to_cpu(ppage0_alloc->PortIdentifier);
+
+ ppage0_alloc->WWNN.Low =
+ le32_to_cpu(ppage0_alloc->WWNN.Low);
+
+ ppage0_alloc->WWNN.High =
+ le32_to_cpu(ppage0_alloc->WWNN.High);
+
+ ppage0_alloc->WWPN.Low =
+ le32_to_cpu(ppage0_alloc->WWPN.Low);
+
+ ppage0_alloc->WWPN.High =
+ le32_to_cpu(ppage0_alloc->WWPN.High);
+
+ ppage0_alloc->BBCredit =
+ le16_to_cpu(ppage0_alloc->BBCredit);
+
+ ppage0_alloc->MaxRxFrameSize =
+ le16_to_cpu(ppage0_alloc->MaxRxFrameSize);
+
+ port_id = ppage0_alloc->PortIdentifier;
+ num_targ++;
+ *p_p0 = *ppage0_alloc; /* save data */
+ *p_pp0++ = p_p0++; /* save addr */
+ }
+ pci_free_consistent(ioc->pcidev, data_sz,
+ (u8 *) ppage0_alloc, page0_dma);
+ if (rc != 0)
+ break;
+
+ } while (port_id <= 0xff0000);
+
+ if (num_targ) {
+ /* sort array */
+ if (num_targ > 1)
+ sort (pp0_array, num_targ, sizeof(FCDevicePage0_t *),
+ mptfc_FcDevPage0_cmp_func, NULL);
+ /* call caller's func for each targ */
+ for (ii = 0; ii < num_targ; ii++) {
+ fc = *(pp0_array+ii);
+ func(ioc, ioc_port, fc);
+ }
+ }
+
+ out:
+ if (pp0_array)
+ kfree(pp0_array);
+ if (p0_array)
+ kfree(p0_array);
+ return rc;
+}
+
+static int
+mptfc_generate_rport_ids(FCDevicePage0_t *pg0, struct fc_rport_identifiers *rid)
+{
+ /* not currently usable */
+ if (pg0->Flags & (MPI_FC_DEVICE_PAGE0_FLAGS_PLOGI_INVALID |
+ MPI_FC_DEVICE_PAGE0_FLAGS_PRLI_INVALID))
+ return -1;
+
+ if (!(pg0->Flags & MPI_FC_DEVICE_PAGE0_FLAGS_TARGETID_BUS_VALID))
+ return -1;
+
+ if (!(pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_TARGET))
+ return -1;
+
+ /*
+ * board data structure already normalized to platform endianness
+ * shifted to avoid unaligned access on 64 bit architecture
+ */
+ rid->node_name = ((u64)pg0->WWNN.High) << 32 | (u64)pg0->WWNN.Low;
+ rid->port_name = ((u64)pg0->WWPN.High) << 32 | (u64)pg0->WWPN.Low;
+ rid->port_id = pg0->PortIdentifier;
+ rid->roles = FC_RPORT_ROLE_UNKNOWN;
+
+ return 0;
+}
+
+static void
+mptfc_register_dev(MPT_ADAPTER *ioc, int channel, FCDevicePage0_t *pg0)
+{
+ struct fc_rport_identifiers rport_ids;
+ struct fc_rport *rport;
+ struct mptfc_rport_info *ri;
+ int new_ri = 1;
+ u64 pn, nn;
+ VirtTarget *vtarget;
+ u32 roles = FC_RPORT_ROLE_UNKNOWN;
+
+ if (mptfc_generate_rport_ids(pg0, &rport_ids) < 0)
+ return;
+
+ roles |= FC_RPORT_ROLE_FCP_TARGET;
+ if (pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_INITIATOR)
+ roles |= FC_RPORT_ROLE_FCP_INITIATOR;
+
+ /* scan list looking for a match */
+ list_for_each_entry(ri, &ioc->fc_rports, list) {
+ pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
+ if (pn == rport_ids.port_name) { /* match */
+ list_move_tail(&ri->list, &ioc->fc_rports);
+ new_ri = 0;
+ break;
+ }
+ }
+ if (new_ri) { /* allocate one */
+ ri = kzalloc(sizeof(struct mptfc_rport_info), GFP_KERNEL);
+ if (!ri)
+ return;
+ list_add_tail(&ri->list, &ioc->fc_rports);
+ }
+
+ ri->pg0 = *pg0; /* add/update pg0 data */
+ ri->flags &= ~MPT_RPORT_INFO_FLAGS_MISSING;
+
+ /* MPT_RPORT_INFO_FLAGS_REGISTERED - rport not previously deleted */
+ if (!(ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED)) {
+ ri->flags |= MPT_RPORT_INFO_FLAGS_REGISTERED;
+ rport = fc_remote_port_add(ioc->sh, channel, &rport_ids);
+ if (rport) {
+ ri->rport = rport;
+ if (new_ri) /* may have been reset by user */
+ rport->dev_loss_tmo = mptfc_dev_loss_tmo;
+ /*
+ * if already mapped, remap here. If not mapped,
+ * target_alloc will allocate vtarget and map,
+ * slave_alloc will fill in vdev from vtarget.
+ */
+ if (ri->starget) {
+ vtarget = ri->starget->hostdata;
+ if (vtarget) {
+ vtarget->target_id = pg0->CurrentTargetID;
+ vtarget->bus_id = pg0->CurrentBus;
+ }
+ }
+ *((struct mptfc_rport_info **)rport->dd_data) = ri;
+ /* scan will be scheduled once rport becomes a target */
+ fc_remote_port_rolechg(rport,roles);
+
+ pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
+ nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
+ dfcprintk ((MYIOC_s_INFO_FMT
+ "mptfc_reg_dev.%d: %x, %llx / %llx, tid %d, "
+ "rport tid %d, tmo %d\n",
+ ioc->name,
+ ioc->sh->host_no,
+ pg0->PortIdentifier,
+ (unsigned long long)nn,
+ (unsigned long long)pn,
+ pg0->CurrentTargetID,
+ ri->rport->scsi_target_id,
+ ri->rport->dev_loss_tmo));
+ } else {
+ list_del(&ri->list);
+ kfree(ri);
+ ri = NULL;
+ }
+ }
+}
+
+/*
+ * OS entry point to allow for host driver to free allocated memory
+ * Called if no device present or device being unloaded
+ */
+static void
+mptfc_target_destroy(struct scsi_target *starget)
+{
+ struct fc_rport *rport;
+ struct mptfc_rport_info *ri;
+
+ rport = starget_to_rport(starget);
+ if (rport) {
+ ri = *((struct mptfc_rport_info **)rport->dd_data);
+ if (ri) /* better be! */
+ ri->starget = NULL;
+ }
+ if (starget->hostdata)
+ kfree(starget->hostdata);
+ starget->hostdata = NULL;
+}
+
+/*
+ * OS entry point to allow host driver to alloc memory
+ * for each scsi target. Called once per device the bus scan.
+ * Return non-zero if allocation fails.
+ */
+static int
+mptfc_target_alloc(struct scsi_target *starget)
+{
+ VirtTarget *vtarget;
+ struct fc_rport *rport;
+ struct mptfc_rport_info *ri;
+ int rc;
+
+ vtarget = kzalloc(sizeof(VirtTarget), GFP_KERNEL);
+ if (!vtarget)
+ return -ENOMEM;
+ starget->hostdata = vtarget;
+
+ rc = -ENODEV;
+ rport = starget_to_rport(starget);
+ if (rport) {
+ ri = *((struct mptfc_rport_info **)rport->dd_data);
+ if (ri) { /* better be! */
+ vtarget->target_id = ri->pg0.CurrentTargetID;
+ vtarget->bus_id = ri->pg0.CurrentBus;
+ ri->starget = starget;
+ rc = 0;
+ }
+ }
+ if (rc != 0) {
+ kfree(vtarget);
+ starget->hostdata = NULL;
+ }
+
+ return rc;
+}
+
+/*
+ * OS entry point to allow host driver to alloc memory
+ * for each scsi device. Called once per device the bus scan.
+ * Return non-zero if allocation fails.
+ * Init memory once per LUN.
+ */
+static int
+mptfc_slave_alloc(struct scsi_device *sdev)
+{
+ MPT_SCSI_HOST *hd;
+ VirtTarget *vtarget;
+ VirtDevice *vdev;
+ struct scsi_target *starget;
+ struct fc_rport *rport;
+
+
+ starget = scsi_target(sdev);
+ rport = starget_to_rport(starget);
+
+ if (!rport || fc_remote_port_chkready(rport))
+ return -ENXIO;
+
+ hd = (MPT_SCSI_HOST *)sdev->host->hostdata;
+
+ vdev = kzalloc(sizeof(VirtDevice), GFP_KERNEL);
+ if (!vdev) {
+ printk(MYIOC_s_ERR_FMT "slave_alloc kmalloc(%zd) FAILED!\n",
+ hd->ioc->name, sizeof(VirtDevice));
+ return -ENOMEM;
+ }
+
+
+ sdev->hostdata = vdev;
+ vtarget = starget->hostdata;
+
+ if (vtarget->num_luns == 0) {
+ vtarget->ioc_id = hd->ioc->id;
+ vtarget->tflags = MPT_TARGET_FLAGS_Q_YES |
+ MPT_TARGET_FLAGS_VALID_INQUIRY;
+ hd->Targets[sdev->id] = vtarget;
+ }
+
+ vdev->vtarget = vtarget;
+ vdev->lun = sdev->lun;
+
+ vtarget->num_luns++;
+
+
+#ifdef DMPT_DEBUG_FC
+ {
+ u64 nn, pn;
+ struct mptfc_rport_info *ri;
+ ri = *((struct mptfc_rport_info **)rport->dd_data);
+ pn = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
+ nn = (u64)ri->pg0.WWNN.High << 32 | (u64)ri->pg0.WWNN.Low;
+ dfcprintk ((MYIOC_s_INFO_FMT
+ "mptfc_slv_alloc.%d: num_luns %d, sdev.id %d, "
+ "CurrentTargetID %d, %x %llx %llx\n",
+ hd->ioc->name,
+ sdev->host->host_no,
+ vtarget->num_luns,
+ sdev->id, ri->pg0.CurrentTargetID,
+ ri->pg0.PortIdentifier,
+ (unsigned long long)pn,
+ (unsigned long long)nn));
+ }
+#endif
+
+ return 0;
+}
+
+static int
+mptfc_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
+{
+ struct mptfc_rport_info *ri;
+ struct fc_rport *rport = starget_to_rport(scsi_target(SCpnt->device));
+ int err;
+
+ err = fc_remote_port_chkready(rport);
+ if (unlikely(err)) {
+ SCpnt->result = err;
+ done(SCpnt);
+ return 0;
+ }
+
+ /* dd_data is null until finished adding target */
+ ri = *((struct mptfc_rport_info **)rport->dd_data);
+ if (unlikely(!ri)) {
+ dfcprintk ((MYIOC_s_INFO_FMT
+ "mptfc_qcmd.%d: %d:%d, dd_data is null.\n",
+ ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->name,
+ ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->sh->host_no,
+ SCpnt->device->id,SCpnt->device->lun));
+ SCpnt->result = DID_IMM_RETRY << 16;
+ done(SCpnt);
+ return 0;
+ }
+
+ err = mptscsih_qcmd(SCpnt,done);
+#ifdef DMPT_DEBUG_FC
+ if (unlikely(err)) {
+ dfcprintk ((MYIOC_s_INFO_FMT
+ "mptfc_qcmd.%d: %d:%d, mptscsih_qcmd returns non-zero.\n",
+ ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->name,
+ ((MPT_SCSI_HOST *) SCpnt->device->host->hostdata)->ioc->sh->host_no,
+ SCpnt->device->id,SCpnt->device->lun));
+ }
+#endif
+ return err;
+}
+
+static void
+mptfc_init_host_attr(MPT_ADAPTER *ioc,int portnum)
+{
+ unsigned class = 0, cos = 0;
+
+ /* don't know what to do as only one scsi (fc) host was allocated */
+ if (portnum != 0)
+ return;
+
+ class = ioc->fc_port_page0[portnum].SupportedServiceClass;
+ if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_1)
+ cos |= FC_COS_CLASS1;
+ if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_2)
+ cos |= FC_COS_CLASS2;
+ if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_3)
+ cos |= FC_COS_CLASS3;
+
+ fc_host_node_name(ioc->sh) =
+ (u64)ioc->fc_port_page0[portnum].WWNN.High << 32
+ | (u64)ioc->fc_port_page0[portnum].WWNN.Low;
+
+ fc_host_port_name(ioc->sh) =
+ (u64)ioc->fc_port_page0[portnum].WWPN.High << 32
+ | (u64)ioc->fc_port_page0[portnum].WWPN.Low;
+
+ fc_host_port_id(ioc->sh) = ioc->fc_port_page0[portnum].PortIdentifier;
+
+ fc_host_supported_classes(ioc->sh) = cos;
+
+ fc_host_tgtid_bind_type(ioc->sh) = FC_TGTID_BIND_BY_WWPN;
+}
+
+static void
+mptfc_rescan_devices(void *arg)
+{
+ MPT_ADAPTER *ioc = (MPT_ADAPTER *)arg;
+ int ii;
+ int work_to_do;
+ u64 pn;
+ unsigned long flags;
+ struct mptfc_rport_info *ri;
+
+ do {
+ /* start by tagging all ports as missing */
+ list_for_each_entry(ri, &ioc->fc_rports, list) {
+ if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
+ ri->flags |= MPT_RPORT_INFO_FLAGS_MISSING;
+ }
+ }
+
+ /*
+ * now rescan devices known to adapter,
+ * will reregister existing rports
+ */
+ for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
+ (void) mptbase_GetFcPortPage0(ioc, ii);
+ mptfc_init_host_attr(ioc,ii); /* refresh */
+ mptfc_GetFcDevPage0(ioc,ii,mptfc_register_dev);
+ }
+
+ /* delete devices still missing */
+ list_for_each_entry(ri, &ioc->fc_rports, list) {
+ /* if newly missing, delete it */
+ if (ri->flags & MPT_RPORT_INFO_FLAGS_MISSING) {
+
+ ri->flags &= ~(MPT_RPORT_INFO_FLAGS_REGISTERED|
+ MPT_RPORT_INFO_FLAGS_MISSING);
+ fc_remote_port_delete(ri->rport); /* won't sleep */
+ ri->rport = NULL;
+
+ pn = (u64)ri->pg0.WWPN.High << 32 |
+ (u64)ri->pg0.WWPN.Low;
+ dfcprintk ((MYIOC_s_INFO_FMT
+ "mptfc_rescan.%d: %llx deleted\n",
+ ioc->name,
+ ioc->sh->host_no,
+ (unsigned long long)pn));
+ }
+ }
+
+ /*
+ * allow multiple passes as target state
+ * might have changed during scan
+ */
+ spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
+ if (ioc->fc_rescan_work_count > 2) /* only need one more */
+ ioc->fc_rescan_work_count = 2;
+ work_to_do = --ioc->fc_rescan_work_count;
+ spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
+ } while (work_to_do);
+}
+
+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 ii;
+ int numSGE = 0;
+ int scale;
+ int ioc_cap;
+ int error=0;
+ int r;
+
+ if ((r = mpt_attach(pdev,id)) != 0)
+ return r;
+
+ ioc = pci_get_drvdata(pdev);
+ ioc->DoneCtx = mptfcDoneCtx;
+ ioc->TaskCtx = mptfcTaskCtx;
+ ioc->InternalCtx = mptfcInternalCtx;
+
+ /* 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);
+ error = -ENODEV;
+ goto out_mptfc_probe;
+ }
+
+ if (!ioc->active) {
+ printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
+ ioc->name);
+ error = -ENODEV;
+ goto out_mptfc_probe;
+ }
+
+ /* 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);
+ error = -1;
+ goto out_mptfc_probe;
+ }
+
+ INIT_WORK(&ioc->fc_rescan_work, mptfc_rescan_devices,(void *)ioc);
+
+ 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;
+ }
+
+ 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!)
+ */
+ hd->ScsiLookup = kcalloc(ioc->req_depth, sizeof(void *), GFP_ATOMIC);
+ if (!hd->ScsiLookup) {
+ error = -ENOMEM;
+ goto out_mptfc_probe;
+ }
+
+ dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p\n",
+ ioc->name, hd->ScsiLookup));
+
+ /* Allocate memory for the device structures.
+ * A non-Null pointer at an offset
+ * indicates a device exists.
+ * max_id = 1 + maximum id (hosts.h)
+ */
+ hd->Targets = kcalloc(sh->max_id, sizeof(void *), GFP_ATOMIC);
+ if (!hd->Targets) {
+ error = -ENOMEM;
+ goto out_mptfc_probe;
+ }
+
+ dprintk((KERN_INFO " vdev @ %p\n", hd->Targets));
+
+ /* 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;
+
+ 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;
+
+ sh->transportt = mptfc_transport_template;
+ error = scsi_add_host (sh, &ioc->pcidev->dev);
+ if(error) {
+ dprintk((KERN_ERR MYNAM
+ "scsi_add_host failed\n"));
+ goto out_mptfc_probe;
+ }
+
+ /* initialize workqueue */
+
+ snprintf(ioc->fc_rescan_work_q_name, KOBJ_NAME_LEN, "mptfc_wq_%d",
+ sh->host_no);
+ ioc->fc_rescan_work_q =
+ create_singlethread_workqueue(ioc->fc_rescan_work_q_name);
+ if (!ioc->fc_rescan_work_q)
+ goto out_mptfc_probe;
+
+ /*
+ * scan for rports -
+ * by doing it via the workqueue, some locking is eliminated
+ */
+
+ ioc->fc_rescan_work_count = 1;
+ queue_work(ioc->fc_rescan_work_q, &ioc->fc_rescan_work);
+ flush_workqueue(ioc->fc_rescan_work_q);
+
+ return 0;
+
+out_mptfc_probe:
+
+ mptscsih_remove(pdev);
+ return error;
+}
+
+static struct pci_driver mptfc_driver = {
+ .name = "mptfc",
+ .id_table = mptfc_pci_table,
+ .probe = mptfc_probe,
+ .remove = __devexit_p(mptfc_remove),
+ .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)
+{
+ int error;
+
+ show_mptmod_ver(my_NAME, my_VERSION);
+
+ /* sanity check module parameter */
+ if (mptfc_dev_loss_tmo == 0)
+ mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO;
+
+ mptfc_transport_template =
+ fc_attach_transport(&mptfc_transport_functions);
+
+ if (!mptfc_transport_template)
+ return -ENODEV;
+
+ 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) {
+ devtverboseprintk((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"));
+ }
+
+ error = pci_register_driver(&mptfc_driver);
+ if (error)
+ fc_release_transport(mptfc_transport_template);
+
+ return error;
+}
+
+/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
+/**
+ * mptfc_remove - Removed fc infrastructure for devices
+ * @pdev: Pointer to pci_dev structure
+ *
+ */
+static void __devexit
+mptfc_remove(struct pci_dev *pdev)
+{
+ MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
+ struct mptfc_rport_info *p, *n;
+ struct workqueue_struct *work_q;
+ unsigned long flags;
+
+ /* destroy workqueue */
+ if ((work_q=ioc->fc_rescan_work_q)) {
+ spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
+ ioc->fc_rescan_work_q = NULL;
+ spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
+ destroy_workqueue(work_q);
+ }
+
+ fc_remove_host(ioc->sh);
+
+ list_for_each_entry_safe(p, n, &ioc->fc_rports, list) {
+ list_del(&p->list);
+ kfree(p);
+ }
+
+ mptscsih_remove(pdev);
+}
+
+/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
+/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
+/**
+ * mptfc_exit - Unregisters MPT adapter(s)
+ *
+ */
+static void __exit
+mptfc_exit(void)
+{
+ pci_unregister_driver(&mptfc_driver);
+ fc_release_transport(mptfc_transport_template);
+
+ 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);
git://git.onelab.eu / linux-2.6.git / blobdiff