[SCSI] mptfusion: mptspi Adding Stub Driver - SCSI Parallel
(1) mptspi.c: This driver is having module_init, module_exit, and probe.
(2) mptspi.c: Registering for SCSI pci ids are done from this module.
(3) mptspi.c: Convert MODULE_PARM to module_param
Signed-off-by: Eric Moore <Eric.Moore@lsil.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/message/fusion/mptspi.c b/drivers/message/fusion/mptspi.c
new file mode 100644
index 0000000..a4e3c96
--- /dev/null
+++ b/drivers/message/fusion/mptspi.c
@@ -0,0 +1,487 @@
+/*
+ * linux/drivers/message/fusion/mptspi.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 SPI Host driver"
+#define my_VERSION MPT_LINUX_VERSION_COMMON
+#define MYNAM "mptspi"
+
+MODULE_AUTHOR(MODULEAUTHOR);
+MODULE_DESCRIPTION(my_NAME);
+MODULE_LICENSE("GPL");
+
+/* Command line args */
+#ifdef MPTSCSIH_ENABLE_DOMAIN_VALIDATION
+static int mpt_dv = MPTSCSIH_DOMAIN_VALIDATION;
+module_param(mpt_dv, int, 0);
+MODULE_PARM_DESC(mpt_dv, " DV Algorithm: enhanced=1, basic=0 (default=MPTSCSIH_DOMAIN_VALIDATION=1)");
+
+static int mpt_width = MPTSCSIH_MAX_WIDTH;
+module_param(mpt_width, int, 0);
+MODULE_PARM_DESC(mpt_width, " Max Bus Width: wide=1, narrow=0 (default=MPTSCSIH_MAX_WIDTH=1)");
+
+static ushort mpt_factor = MPTSCSIH_MIN_SYNC;
+module_param(mpt_factor, ushort, 0);
+MODULE_PARM_DESC(mpt_factor, " Min Sync Factor (default=MPTSCSIH_MIN_SYNC=0x08)");
+#endif
+
+static int mpt_saf_te = MPTSCSIH_SAF_TE;
+module_param(mpt_saf_te, int, 0);
+MODULE_PARM_DESC(mpt_saf_te, " Force enabling SEP Processor: enable=1 (default=MPTSCSIH_SAF_TE=0)");
+
+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 mptspiDoneCtx = -1;
+static int mptspiTaskCtx = -1;
+static int mptspiInternalCtx = -1; /* Used only for internal commands */
+
+static struct device_attribute mptspi_queue_depth_attr = {
+ .attr = {
+ .name = "queue_depth",
+ .mode = S_IWUSR,
+ },
+ .store = mptscsih_store_queue_depth,
+};
+
+static struct device_attribute *mptspi_dev_attrs[] = {
+ &mptspi_queue_depth_attr,
+ NULL,
+};
+
+static struct scsi_host_template mptspi_driver_template = {
+ .proc_name = "mptspi",
+ .proc_info = mptscsih_proc_info,
+ .name = "MPT SPI 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_SCSI_CAN_QUEUE,
+ .this_id = -1,
+ .sg_tablesize = MPT_SCSI_SG_DEPTH,
+ .max_sectors = 8192,
+ .cmd_per_lun = 7,
+ .use_clustering = ENABLE_CLUSTERING,
+ .sdev_attrs = mptspi_dev_attrs,
+};
+
+
+/****************************************************************************
+ * Supported hardware
+ */
+
+static struct pci_device_id mptspi_pci_table[] = {
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1030,
+ PCI_ANY_ID, PCI_ANY_ID },
+ { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_1030_53C1035,
+ PCI_ANY_ID, PCI_ANY_ID },
+ {0} /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(pci, mptspi_pci_table);
+
+/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
+/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
+/*
+ * mptspi_probe - Installs scsi devices per bus.
+ * @pdev: Pointer to pci_dev structure
+ *
+ * Returns 0 for success, non-zero for failure.
+ *
+ */
+static int
+mptspi_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(&mptspi_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;
+
+ /* Yikes! This is important!
+ * Otherwise, by default, linux
+ * only scans target IDs 0-7!
+ * pfactsN->MaxDevices unreliable
+ * (not supported in early
+ * versions of the FW).
+ * max_id = 1 + actual max id,
+ * max_lun = 1 + actual last lun,
+ * see hosts.h :o(
+ */
+ sh->max_id = MPT_MAX_SCSI_DEVICES;
+
+ 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 mptspi_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 mptspi_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->spi_data.Saf_Te = mpt_saf_te;
+ hd->mpt_pq_filter = mpt_pq_filter;
+
+#ifdef MPTSCSIH_ENABLE_DOMAIN_VALIDATION
+ if (ioc->spi_data.maxBusWidth > mpt_width)
+ ioc->spi_data.maxBusWidth = mpt_width;
+ if (ioc->spi_data.minSyncFactor < mpt_factor)
+ ioc->spi_data.minSyncFactor = mpt_factor;
+ if (ioc->spi_data.minSyncFactor == MPT_ASYNC) {
+ ioc->spi_data.maxSyncOffset = 0;
+ }
+ ioc->spi_data.mpt_dv = mpt_dv;
+ hd->negoNvram = 0;
+
+ ddvprintk((MYIOC_s_INFO_FMT
+ "dv %x width %x factor %x saf_te %x mpt_pq_filter %x\n",
+ ioc->name,
+ mpt_dv,
+ mpt_width,
+ mpt_factor,
+ mpt_saf_te,
+ mpt_pq_filter));
+#else
+ hd->negoNvram = MPT_SCSICFG_USE_NVRAM;
+ ddvprintk((MYIOC_s_INFO_FMT
+ "saf_te %x mpt_pq_filter %x\n",
+ ioc->name,
+ mpt_saf_te,
+ mpt_pq_filter));
+#endif
+
+ ioc->spi_data.forceDv = 0;
+ ioc->spi_data.noQas = 0;
+
+ for (ii=0; ii < MPT_MAX_SCSI_DEVICES; ii++)
+ ioc->spi_data.dvStatus[ii] =
+ MPT_SCSICFG_NEGOTIATE;
+
+ for (ii=0; ii < MPT_MAX_SCSI_DEVICES; ii++)
+ ioc->spi_data.dvStatus[ii] |=
+ MPT_SCSICFG_DV_NOT_DONE;
+
+ init_waitqueue_head(&hd->scandv_waitq);
+ hd->scandv_wait_done = 0;
+ hd->last_queue_full = 0;
+
+ ioc->DoneCtx = mptspiDoneCtx;
+ ioc->TaskCtx = mptspiTaskCtx;
+ ioc->InternalCtx = mptspiInternalCtx;
+
+ error = scsi_add_host (sh, &ioc->pcidev->dev);
+ if(error) {
+ dprintk((KERN_ERR MYNAM
+ "scsi_add_host failed\n"));
+ goto mptspi_probe_failed;
+ }
+
+ scsi_scan_host(sh);
+ return 0;
+
+mptspi_probe_failed:
+
+ mptscsih_remove(pdev);
+ return error;
+}
+
+static struct pci_driver mptspi_driver = {
+ .name = "mptspi",
+ .id_table = mptspi_pci_table,
+ .probe = mptspi_probe,
+ .remove = __devexit_p(mptscsih_remove),
+ .driver = {
+ .shutdown = mptscsih_shutdown,
+ },
+#ifdef CONFIG_PM
+ .suspend = mptscsih_suspend,
+ .resume = mptscsih_resume,
+#endif
+};
+
+/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
+/**
+ * mptspi_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
+mptspi_init(void)
+{
+
+ show_mptmod_ver(my_NAME, my_VERSION);
+
+ mptspiDoneCtx = mpt_register(mptscsih_io_done, MPTSPI_DRIVER);
+ mptspiTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTSPI_DRIVER);
+ mptspiInternalCtx = mpt_register(mptscsih_scandv_complete, MPTSPI_DRIVER);
+
+ if (mpt_event_register(mptspiDoneCtx, mptscsih_event_process) == 0) {
+ devtprintk((KERN_INFO MYNAM
+ ": Registered for IOC event notifications\n"));
+ }
+
+ if (mpt_reset_register(mptspiDoneCtx, mptscsih_ioc_reset) == 0) {
+ dprintk((KERN_INFO MYNAM
+ ": Registered for IOC reset notifications\n"));
+ }
+
+ return pci_register_driver(&mptspi_driver);
+}
+
+/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
+/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
+/**
+ * mptspi_exit - Unregisters MPT adapter(s)
+ *
+ */
+static void __exit
+mptspi_exit(void)
+{
+ pci_unregister_driver(&mptspi_driver);
+
+ mpt_reset_deregister(mptspiDoneCtx);
+ dprintk((KERN_INFO MYNAM
+ ": Deregistered for IOC reset notifications\n"));
+
+ mpt_event_deregister(mptspiDoneCtx);
+ dprintk((KERN_INFO MYNAM
+ ": Deregistered for IOC event notifications\n"));
+
+ mpt_deregister(mptspiInternalCtx);
+ mpt_deregister(mptspiTaskCtx);
+ mpt_deregister(mptspiDoneCtx);
+}
+
+module_init(mptspi_init);
+module_exit(mptspi_exit);