diff options
Diffstat (limited to 'drivers/message/fusion/mptctl.c')
| -rw-r--r-- | drivers/message/fusion/mptctl.c | 2878 |
1 files changed, 2878 insertions, 0 deletions
diff --git a/drivers/message/fusion/mptctl.c b/drivers/message/fusion/mptctl.c new file mode 100644 index 000000000000..70b0cfb5ac5c --- /dev/null +++ b/drivers/message/fusion/mptctl.c @@ -0,0 +1,2878 @@ +/* + * linux/drivers/message/fusion/mptctl.c + * Fusion MPT misc device (ioctl) driver. + * For use with PCI chip/adapter(s): + * LSIFC9xx/LSI409xx Fibre Channel + * running LSI Logic Fusion MPT (Message Passing Technology) firmware. + * + * Credits: + * This driver would not exist if not for Alan Cox's development + * of the linux i2o driver. + * + * A special thanks to Pamela Delaney (LSI Logic) for tons of work + * and countless enhancements while adding support for the 1030 + * chip family. Pam has been instrumental in the development of + * of the 2.xx.xx series fusion drivers, and her contributions are + * far too numerous to hope to list in one place. + * + * A huge debt of gratitude is owed to David S. Miller (DaveM) + * for fixing much of the stupid and broken stuff in the early + * driver while porting to sparc64 platform. THANK YOU! + * + * A big THANKS to Eddie C. Dost for fixing the ioctl path + * and most importantly f/w download on sparc64 platform! + * (plus Eddie's other helpful hints and insights) + * + * Thanks to Arnaldo Carvalho de Melo for finding and patching + * a potential memory leak in mptctl_do_fw_download(), + * and for some kmalloc insight:-) + * + * (see also mptbase.c) + * + * Copyright (c) 1999-2004 LSI Logic Corporation + * Originally By: Steven J. Ralston, Noah Romer + * (mailto:sjralston1@netscape.net) + * (mailto:mpt_linux_developer@lsil.com) + * + * $Id: mptctl.c,v 1.63 2002/12/03 21:26:33 pdelaney Exp $ + */ +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* + 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/version.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/delay.h> /* for mdelay */ +#include <linux/miscdevice.h> +#include <linux/smp_lock.h> +#include <linux/compat.h> + +#include <asm/io.h> +#include <asm/uaccess.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> + +#define COPYRIGHT "Copyright (c) 1999-2004 LSI Logic Corporation" +#define MODULEAUTHOR "Steven J. Ralston, Noah Romer, Pamela Delaney" +#include "mptbase.h" +#include "mptctl.h" + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +#define my_NAME "Fusion MPT misc device (ioctl) driver" +#define my_VERSION MPT_LINUX_VERSION_COMMON +#define MYNAM "mptctl" + +MODULE_AUTHOR(MODULEAUTHOR); +MODULE_DESCRIPTION(my_NAME); +MODULE_LICENSE("GPL"); + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ + +static int mptctl_id = -1; + +static DECLARE_WAIT_QUEUE_HEAD ( mptctl_wait ); + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ + +struct buflist { + u8 *kptr; + int len; +}; + +/* + * Function prototypes. Called from OS entry point mptctl_ioctl. + * arg contents specific to function. + */ +static int mptctl_fw_download(unsigned long arg); +static int mptctl_getiocinfo (unsigned long arg, unsigned int cmd); +static int mptctl_gettargetinfo (unsigned long arg); +static int mptctl_readtest (unsigned long arg); +static int mptctl_mpt_command (unsigned long arg); +static int mptctl_eventquery (unsigned long arg); +static int mptctl_eventenable (unsigned long arg); +static int mptctl_eventreport (unsigned long arg); +static int mptctl_replace_fw (unsigned long arg); + +static int mptctl_do_reset(unsigned long arg); +static int mptctl_hp_hostinfo(unsigned long arg, unsigned int cmd); +static int mptctl_hp_targetinfo(unsigned long arg); + +static int mptctl_probe(struct pci_dev *, const struct pci_device_id *); +static void mptctl_remove(struct pci_dev *); + +#ifdef CONFIG_COMPAT +static long compat_mpctl_ioctl(struct file *f, unsigned cmd, unsigned long arg); +#endif +/* + * Private function calls. + */ +static int mptctl_do_mpt_command (struct mpt_ioctl_command karg, void __user *mfPtr); +static int mptctl_do_fw_download(int ioc, char __user *ufwbuf, size_t fwlen); +static MptSge_t *kbuf_alloc_2_sgl( int bytes, u32 dir, int sge_offset, int *frags, + struct buflist **blp, dma_addr_t *sglbuf_dma, MPT_ADAPTER *ioc); +static void kfree_sgl( MptSge_t *sgl, dma_addr_t sgl_dma, + struct buflist *buflist, MPT_ADAPTER *ioc); +static void mptctl_timeout_expired (MPT_IOCTL *ioctl); +static int mptctl_bus_reset(MPT_IOCTL *ioctl); +static int mptctl_set_tm_flags(MPT_SCSI_HOST *hd); +static void mptctl_free_tm_flags(MPT_ADAPTER *ioc); + +/* + * Reset Handler cleanup function + */ +static int mptctl_ioc_reset(MPT_ADAPTER *ioc, int reset_phase); + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* + * Scatter gather list (SGL) sizes and limits... + */ +//#define MAX_SCSI_FRAGS 9 +#define MAX_FRAGS_SPILL1 9 +#define MAX_FRAGS_SPILL2 15 +#define FRAGS_PER_BUCKET (MAX_FRAGS_SPILL2 + 1) + +//#define MAX_CHAIN_FRAGS 64 +//#define MAX_CHAIN_FRAGS (15+15+15+16) +#define MAX_CHAIN_FRAGS (4 * MAX_FRAGS_SPILL2 + 1) + +// Define max sg LIST bytes ( == (#frags + #chains) * 8 bytes each) +// Works out to: 592d bytes! (9+1)*8 + 4*(15+1)*8 +// ^----------------- 80 + 512 +#define MAX_SGL_BYTES ((MAX_FRAGS_SPILL1 + 1 + (4 * FRAGS_PER_BUCKET)) * 8) + +/* linux only seems to ever give 128kB MAX contiguous (GFP_USER) mem bytes */ +#define MAX_KMALLOC_SZ (128*1024) + +#define MPT_IOCTL_DEFAULT_TIMEOUT 10 /* Default timeout value (seconds) */ + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/** + * mptctl_syscall_down - Down the MPT adapter syscall semaphore. + * @ioc: Pointer to MPT adapter + * @nonblock: boolean, non-zero if O_NONBLOCK is set + * + * All of the ioctl commands can potentially sleep, which is illegal + * with a spinlock held, thus we perform mutual exclusion here. + * + * Returns negative errno on error, or zero for success. + */ +static inline int +mptctl_syscall_down(MPT_ADAPTER *ioc, int nonblock) +{ + int rc = 0; + dctlprintk((KERN_INFO MYNAM "::mptctl_syscall_down(%p,%d) called\n", ioc, nonblock)); + + if (nonblock) { + if (down_trylock(&ioc->ioctl->sem_ioc)) + rc = -EAGAIN; + } else { + if (down_interruptible(&ioc->ioctl->sem_ioc)) + rc = -ERESTARTSYS; + } + dctlprintk((KERN_INFO MYNAM "::mptctl_syscall_down return %d\n", rc)); + return rc; +} + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* + * This is the callback for any message we have posted. The message itself + * will be returned to the message pool when we return from the IRQ + * + * This runs in irq context so be short and sweet. + */ +static int +mptctl_reply(MPT_ADAPTER *ioc, MPT_FRAME_HDR *req, MPT_FRAME_HDR *reply) +{ + char *sense_data; + int sz, req_index; + u16 iocStatus; + u8 cmd; + + dctlprintk(("mptctl_reply()!\n")); + if (req) + cmd = req->u.hdr.Function; + else + return 1; + + if (ioc->ioctl) { + + if (reply==NULL) { + + dctlprintk(("mptctl_reply() NULL Reply " + "Function=%x!\n", cmd)); + + ioc->ioctl->status |= MPT_IOCTL_STATUS_COMMAND_GOOD; + ioc->ioctl->reset &= ~MPTCTL_RESET_OK; + + /* We are done, issue wake up + */ + ioc->ioctl->wait_done = 1; + wake_up (&mptctl_wait); + return 1; + + } + + dctlprintk(("mptctl_reply() with req=%p " + "reply=%p Function=%x!\n", req, reply, cmd)); + + /* Copy the reply frame (which much exist + * for non-SCSI I/O) to the IOC structure. + */ + dctlprintk(("Copying Reply Frame @%p to ioc%d!\n", + reply, ioc->id)); + memcpy(ioc->ioctl->ReplyFrame, reply, + min(ioc->reply_sz, 4*reply->u.reply.MsgLength)); + ioc->ioctl->status |= MPT_IOCTL_STATUS_RF_VALID; + + /* Set the command status to GOOD if IOC Status is GOOD + * OR if SCSI I/O cmd and data underrun or recovered error. + */ + iocStatus = reply->u.reply.IOCStatus & MPI_IOCSTATUS_MASK; + if (iocStatus == MPI_IOCSTATUS_SUCCESS) + ioc->ioctl->status |= MPT_IOCTL_STATUS_COMMAND_GOOD; + + if ((cmd == MPI_FUNCTION_SCSI_IO_REQUEST) || + (cmd == MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) { + ioc->ioctl->reset &= ~MPTCTL_RESET_OK; + + if ((iocStatus == MPI_IOCSTATUS_SCSI_DATA_UNDERRUN) || + (iocStatus == MPI_IOCSTATUS_SCSI_RECOVERED_ERROR)) { + ioc->ioctl->status |= MPT_IOCTL_STATUS_COMMAND_GOOD; + } + } + + /* Copy the sense data - if present + */ + if ((cmd == MPI_FUNCTION_SCSI_IO_REQUEST) && + (reply->u.sreply.SCSIState & + MPI_SCSI_STATE_AUTOSENSE_VALID)){ + sz = req->u.scsireq.SenseBufferLength; + req_index = + le16_to_cpu(req->u.frame.hwhdr.msgctxu.fld.req_idx); + sense_data = + ((u8 *)ioc->sense_buf_pool + + (req_index * MPT_SENSE_BUFFER_ALLOC)); + memcpy(ioc->ioctl->sense, sense_data, sz); + ioc->ioctl->status |= MPT_IOCTL_STATUS_SENSE_VALID; + } + + if (cmd == MPI_FUNCTION_SCSI_TASK_MGMT) + mptctl_free_tm_flags(ioc); + + /* We are done, issue wake up + */ + ioc->ioctl->wait_done = 1; + wake_up (&mptctl_wait); + } + return 1; +} + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* mptctl_timeout_expired + * + * Expecting an interrupt, however timed out. + * + */ +static void mptctl_timeout_expired (MPT_IOCTL *ioctl) +{ + int rc = 1; + + dctlprintk((KERN_NOTICE MYNAM ": Timeout Expired! Host %d\n", + ioctl->ioc->id)); + if (ioctl == NULL) + return; + + ioctl->wait_done = 0; + if (ioctl->reset & MPTCTL_RESET_OK) + rc = mptctl_bus_reset(ioctl); + + if (rc) { + /* Issue a reset for this device. + * The IOC is not responding. + */ + dctlprintk((MYIOC_s_INFO_FMT "Calling HardReset! \n", + ioctl->ioc->name)); + mpt_HardResetHandler(ioctl->ioc, NO_SLEEP); + } + return; + +} + +/* mptctl_bus_reset + * + * Bus reset code. + * + */ +static int mptctl_bus_reset(MPT_IOCTL *ioctl) +{ + MPT_FRAME_HDR *mf; + SCSITaskMgmt_t *pScsiTm; + MPT_SCSI_HOST *hd; + int ii; + int retval; + + + ioctl->reset &= ~MPTCTL_RESET_OK; + + if (ioctl->ioc->sh == NULL) + return -EPERM; + + hd = (MPT_SCSI_HOST *) ioctl->ioc->sh->hostdata; + if (hd == NULL) + return -EPERM; + + /* Single threading .... + */ + if (mptctl_set_tm_flags(hd) != 0) + return -EPERM; + + /* Send request + */ + if ((mf = mpt_get_msg_frame(mptctl_id, ioctl->ioc)) == NULL) { + dctlprintk((MYIOC_s_WARN_FMT "IssueTaskMgmt, no msg frames!!\n", + ioctl->ioc->name)); + + mptctl_free_tm_flags(ioctl->ioc); + return -ENOMEM; + } + + dtmprintk((MYIOC_s_INFO_FMT "IssueTaskMgmt request @ %p\n", + ioctl->ioc->name, mf)); + + pScsiTm = (SCSITaskMgmt_t *) mf; + pScsiTm->TargetID = ioctl->target; + pScsiTm->Bus = hd->port; /* 0 */ + pScsiTm->ChainOffset = 0; + pScsiTm->Function = MPI_FUNCTION_SCSI_TASK_MGMT; + pScsiTm->Reserved = 0; + pScsiTm->TaskType = MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS; + pScsiTm->Reserved1 = 0; + pScsiTm->MsgFlags = MPI_SCSITASKMGMT_MSGFLAGS_LIPRESET_RESET_OPTION; + + for (ii= 0; ii < 8; ii++) + pScsiTm->LUN[ii] = 0; + + for (ii=0; ii < 7; ii++) + pScsiTm->Reserved2[ii] = 0; + + pScsiTm->TaskMsgContext = 0; + dtmprintk((MYIOC_s_INFO_FMT + "mptctl_bus_reset: issued.\n", ioctl->ioc->name)); + + DBG_DUMP_TM_REQUEST_FRAME((u32 *)mf); + + ioctl->wait_done=0; + if ((retval = mpt_send_handshake_request(mptctl_id, ioctl->ioc, + sizeof(SCSITaskMgmt_t), (u32*)pScsiTm, CAN_SLEEP)) != 0) { + dfailprintk((MYIOC_s_ERR_FMT "_send_handshake FAILED!" + " (hd %p, ioc %p, mf %p) \n", hd->ioc->name, hd, + hd->ioc, mf)); + goto mptctl_bus_reset_done; + } + + /* Now wait for the command to complete */ + ii = wait_event_interruptible_timeout(mptctl_wait, + ioctl->wait_done == 1, + HZ*5 /* 5 second timeout */); + + if(ii <=0 && (ioctl->wait_done != 1 )) { + ioctl->wait_done = 0; + retval = -1; /* return failure */ + } + +mptctl_bus_reset_done: + + mpt_free_msg_frame(hd->ioc, mf); + mptctl_free_tm_flags(ioctl->ioc); + return retval; +} + +static int +mptctl_set_tm_flags(MPT_SCSI_HOST *hd) { + unsigned long flags; + + spin_lock_irqsave(&hd->ioc->FreeQlock, flags); + + if (hd->tmState == TM_STATE_NONE) { + hd->tmState = TM_STATE_IN_PROGRESS; + hd->tmPending = 1; + spin_unlock_irqrestore(&hd->ioc->FreeQlock, flags); + } else { + spin_unlock_irqrestore(&hd->ioc->FreeQlock, flags); + return -EBUSY; + } + + return 0; +} + +static void +mptctl_free_tm_flags(MPT_ADAPTER *ioc) +{ + MPT_SCSI_HOST * hd; + unsigned long flags; + + hd = (MPT_SCSI_HOST *) ioc->sh->hostdata; + if (hd == NULL) + return; + + spin_lock_irqsave(&ioc->FreeQlock, flags); + + hd->tmState = TM_STATE_NONE; + hd->tmPending = 0; + spin_unlock_irqrestore(&ioc->FreeQlock, flags); + + return; +} + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* mptctl_ioc_reset + * + * Clean-up functionality. Used only if there has been a + * reload of the FW due. + * + */ +static int +mptctl_ioc_reset(MPT_ADAPTER *ioc, int reset_phase) +{ + MPT_IOCTL *ioctl = ioc->ioctl; + dctlprintk((KERN_INFO MYNAM ": IOC %s_reset routed to IOCTL driver!\n", + reset_phase==MPT_IOC_SETUP_RESET ? "setup" : ( + reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post"))); + + if(ioctl == NULL) + return 1; + + switch(reset_phase) { + case MPT_IOC_SETUP_RESET: + ioctl->status |= MPT_IOCTL_STATUS_DID_IOCRESET; + break; + case MPT_IOC_POST_RESET: + ioctl->status &= ~MPT_IOCTL_STATUS_DID_IOCRESET; + break; + case MPT_IOC_PRE_RESET: + default: + break; + } + + return 1; +} + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* + * MPT ioctl handler + * cmd - specify the particular IOCTL command to be issued + * arg - data specific to the command. Must not be null. + */ +static long +__mptctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + mpt_ioctl_header __user *uhdr = (void __user *) arg; + mpt_ioctl_header khdr; + int iocnum; + unsigned iocnumX; + int nonblock = (file->f_flags & O_NONBLOCK); + int ret; + MPT_ADAPTER *iocp = NULL; + + dctlprintk(("mptctl_ioctl() called\n")); + + if (copy_from_user(&khdr, uhdr, sizeof(khdr))) { + printk(KERN_ERR "%s::mptctl_ioctl() @%d - " + "Unable to copy mpt_ioctl_header data @ %p\n", + __FILE__, __LINE__, uhdr); + return -EFAULT; + } + ret = -ENXIO; /* (-6) No such device or address */ + + /* Verify intended MPT adapter - set iocnum and the adapter + * pointer (iocp) + */ + iocnumX = khdr.iocnum & 0xFF; + if (((iocnum = mpt_verify_adapter(iocnumX, &iocp)) < 0) || + (iocp == NULL)) { + dctlprintk((KERN_ERR "%s::mptctl_ioctl() @%d - ioc%d not found!\n", + __FILE__, __LINE__, iocnumX)); + return -ENODEV; + } + + if (!iocp->active) { + printk(KERN_ERR "%s::mptctl_ioctl() @%d - Controller disabled.\n", + __FILE__, __LINE__); + return -EFAULT; + } + + /* Handle those commands that are just returning + * information stored in the driver. + * These commands should never time out and are unaffected + * by TM and FW reloads. + */ + if ((cmd & ~IOCSIZE_MASK) == (MPTIOCINFO & ~IOCSIZE_MASK)) { + return mptctl_getiocinfo(arg, _IOC_SIZE(cmd)); + } else if (cmd == MPTTARGETINFO) { + return mptctl_gettargetinfo(arg); + } else if (cmd == MPTTEST) { + return mptctl_readtest(arg); + } else if (cmd == MPTEVENTQUERY) { + return mptctl_eventquery(arg); + } else if (cmd == MPTEVENTENABLE) { + return mptctl_eventenable(arg); + } else if (cmd == MPTEVENTREPORT) { + return mptctl_eventreport(arg); + } else if (cmd == MPTFWREPLACE) { + return mptctl_replace_fw(arg); + } + + /* All of these commands require an interrupt or + * are unknown/illegal. + */ + if ((ret = mptctl_syscall_down(iocp, nonblock)) != 0) + return ret; + + dctlprintk((MYIOC_s_INFO_FMT ": mptctl_ioctl()\n", iocp->name)); + + if (cmd == MPTFWDOWNLOAD) + ret = mptctl_fw_download(arg); + else if (cmd == MPTCOMMAND) + ret = mptctl_mpt_command(arg); + else if (cmd == MPTHARDRESET) + ret = mptctl_do_reset(arg); + else if ((cmd & ~IOCSIZE_MASK) == (HP_GETHOSTINFO & ~IOCSIZE_MASK)) + ret = mptctl_hp_hostinfo(arg, _IOC_SIZE(cmd)); + else if (cmd == HP_GETTARGETINFO) + ret = mptctl_hp_targetinfo(arg); + else + ret = -EINVAL; + + up(&iocp->ioctl->sem_ioc); + + return ret; +} + +static long +mptctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg) +{ + long ret; + lock_kernel(); + ret = __mptctl_ioctl(file, cmd, arg); + unlock_kernel(); + return ret; +} + +static int mptctl_do_reset(unsigned long arg) +{ + struct mpt_ioctl_diag_reset __user *urinfo = (void __user *) arg; + struct mpt_ioctl_diag_reset krinfo; + MPT_ADAPTER *iocp; + + dctlprintk((KERN_INFO "mptctl_do_reset called.\n")); + + if (copy_from_user(&krinfo, urinfo, sizeof(struct mpt_ioctl_diag_reset))) { + printk(KERN_ERR "%s@%d::mptctl_do_reset - " + "Unable to copy mpt_ioctl_diag_reset struct @ %p\n", + __FILE__, __LINE__, urinfo); + return -EFAULT; + } + + if (mpt_verify_adapter(krinfo.hdr.iocnum, &iocp) < 0) { + dctlprintk((KERN_ERR "%s@%d::mptctl_do_reset - ioc%d not found!\n", + __FILE__, __LINE__, krinfo.hdr.iocnum)); + return -ENODEV; /* (-6) No such device or address */ + } + + if (mpt_HardResetHandler(iocp, CAN_SLEEP) != 0) { + printk (KERN_ERR "%s@%d::mptctl_do_reset - reset failed.\n", + __FILE__, __LINE__); + return -1; + } + + return 0; +} + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* + * MPT FW download function. Cast the arg into the mpt_fw_xfer structure. + * This structure contains: iocnum, firmware length (bytes), + * pointer to user space memory where the fw image is stored. + * + * Outputs: None. + * Return: 0 if successful + * -EFAULT if data unavailable + * -ENXIO if no such device + * -EAGAIN if resource problem + * -ENOMEM if no memory for SGE + * -EMLINK if too many chain buffers required + * -EBADRQC if adapter does not support FW download + * -EBUSY if adapter is busy + * -ENOMSG if FW upload returned bad status + */ +static int +mptctl_fw_download(unsigned long arg) +{ + struct mpt_fw_xfer __user *ufwdl = (void __user *) arg; + struct mpt_fw_xfer kfwdl; + + dctlprintk((KERN_INFO "mptctl_fwdl called. mptctl_id = %xh\n", mptctl_id)); //tc + if (copy_from_user(&kfwdl, ufwdl, sizeof(struct mpt_fw_xfer))) { + printk(KERN_ERR "%s@%d::_ioctl_fwdl - " + "Unable to copy mpt_fw_xfer struct @ %p\n", + __FILE__, __LINE__, ufwdl); + return -EFAULT; + } + + return mptctl_do_fw_download(kfwdl.iocnum, kfwdl.bufp, kfwdl.fwlen); +} + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* + * FW Download engine. + * Outputs: None. + * Return: 0 if successful + * -EFAULT if data unavailable + * -ENXIO if no such device + * -EAGAIN if resource problem + * -ENOMEM if no memory for SGE + * -EMLINK if too many chain buffers required + * -EBADRQC if adapter does not support FW download + * -EBUSY if adapter is busy + * -ENOMSG if FW upload returned bad status + */ +static int +mptctl_do_fw_download(int ioc, char __user *ufwbuf, size_t fwlen) +{ + FWDownload_t *dlmsg; + MPT_FRAME_HDR *mf; + MPT_ADAPTER *iocp; + FWDownloadTCSGE_t *ptsge; + MptSge_t *sgl, *sgIn; + char *sgOut; + struct buflist *buflist; + struct buflist *bl; + dma_addr_t sgl_dma; + int ret; + int numfrags = 0; + int maxfrags; + int n = 0; + u32 sgdir; + u32 nib; + int fw_bytes_copied = 0; + int i; + int sge_offset = 0; + u16 iocstat; + pFWDownloadReply_t ReplyMsg = NULL; + + dctlprintk((KERN_INFO "mptctl_do_fwdl called. mptctl_id = %xh.\n", mptctl_id)); + + dctlprintk((KERN_INFO "DbG: kfwdl.bufp = %p\n", ufwbuf)); + dctlprintk((KERN_INFO "DbG: kfwdl.fwlen = %d\n", (int)fwlen)); + dctlprintk((KERN_INFO "DbG: kfwdl.ioc = %04xh\n", ioc)); + + if ((ioc = mpt_verify_adapter(ioc, &iocp)) < 0) { + dctlprintk(("%s@%d::_ioctl_fwdl - ioc%d not found!\n", + __FILE__, __LINE__, ioc)); + return -ENODEV; /* (-6) No such device or address */ + } + + /* Valid device. Get a message frame and construct the FW download message. + */ + if ((mf = mpt_get_msg_frame(mptctl_id, iocp)) == NULL) + return -EAGAIN; + dlmsg = (FWDownload_t*) mf; + ptsge = (FWDownloadTCSGE_t *) &dlmsg->SGL; + sgOut = (char *) (ptsge + 1); + + /* + * Construct f/w download request + */ + dlmsg->ImageType = MPI_FW_DOWNLOAD_ITYPE_FW; + dlmsg->Reserved = 0; + dlmsg->ChainOffset = 0; + dlmsg->Function = MPI_FUNCTION_FW_DOWNLOAD; + dlmsg->Reserved1[0] = dlmsg->Reserved1[1] = dlmsg->Reserved1[2] = 0; + dlmsg->MsgFlags = 0; + + /* Set up the Transaction SGE. + */ + ptsge->Reserved = 0; + ptsge->ContextSize = 0; + ptsge->DetailsLength = 12; + ptsge->Flags = MPI_SGE_FLAGS_TRANSACTION_ELEMENT; + ptsge->Reserved_0100_Checksum = 0; + ptsge->ImageOffset = 0; + ptsge->ImageSize = cpu_to_le32(fwlen); + + /* Add the SGL + */ + + /* + * Need to kmalloc area(s) for holding firmware image bytes. + * But we need to do it piece meal, using a proper + * scatter gather list (with 128kB MAX hunks). + * + * A practical limit here might be # of sg hunks that fit into + * a single IOC request frame; 12 or 8 (see below), so: + * For FC9xx: 12 x 128kB == 1.5 mB (max) + * For C1030: 8 x 128kB == 1 mB (max) + * We could support chaining, but things get ugly(ier:) + * + * Set the sge_offset to the start of the sgl (bytes). + */ + sgdir = 0x04000000; /* IOC will READ from sys mem */ + sge_offset = sizeof(MPIHeader_t) + sizeof(FWDownloadTCSGE_t); + if ((sgl = kbuf_alloc_2_sgl(fwlen, sgdir, sge_offset, + &numfrags, &buflist, &sgl_dma, iocp)) == NULL) + return -ENOMEM; + + /* + * We should only need SGL with 2 simple_32bit entries (up to 256 kB) + * for FC9xx f/w image, but calculate max number of sge hunks + * we can fit into a request frame, and limit ourselves to that. + * (currently no chain support) + * maxfrags = (Request Size - FWdownload Size ) / Size of 32 bit SGE + * Request maxfrags + * 128 12 + * 96 8 + * 64 4 + */ + maxfrags = (iocp->req_sz - sizeof(MPIHeader_t) - sizeof(FWDownloadTCSGE_t)) + / (sizeof(dma_addr_t) + sizeof(u32)); + if (numfrags > maxfrags) { + ret = -EMLINK; + goto fwdl_out; + } + + dctlprintk((KERN_INFO "DbG: sgl buffer = %p, sgfrags = %d\n", sgl, numfrags)); + + /* + * Parse SG list, copying sgl itself, + * plus f/w image hunks from user space as we go... + */ + ret = -EFAULT; + sgIn = sgl; + bl = buflist; + for (i=0; i < numfrags; i++) { + + /* Get the SGE type: 0 - TCSGE, 3 - Chain, 1 - Simple SGE + * Skip everything but Simple. If simple, copy from + * user space into kernel space. + * Note: we should not have anything but Simple as + * Chain SGE are illegal. + */ + nib = (sgIn->FlagsLength & 0x30000000) >> 28; + if (nib == 0 || nib == 3) { + ; + } else if (sgIn->Address) { + mpt_add_sge(sgOut, sgIn->FlagsLength, sgIn->Address); + n++; + if (copy_from_user(bl->kptr, ufwbuf+fw_bytes_copied, bl->len)) { + printk(KERN_ERR "%s@%d::_ioctl_fwdl - " + "Unable to copy f/w buffer hunk#%d @ %p\n", + __FILE__, __LINE__, n, ufwbuf); + goto fwdl_out; + } + fw_bytes_copied += bl->len; + } + sgIn++; + bl++; + sgOut += (sizeof(dma_addr_t) + sizeof(u32)); + } + +#ifdef MPT_DEBUG + { + u32 *m = (u32 *)mf; + printk(KERN_INFO MYNAM ": F/W download request:\n" KERN_INFO " "); + for (i=0; i < 7+numfrags*2; i++) + printk(" %08x", le32_to_cpu(m[i])); + printk("\n"); + } +#endif + + /* + * Finally, perform firmware download. + */ + iocp->ioctl->wait_done = 0; + mpt_put_msg_frame(mptctl_id, iocp, mf); + + /* Now wait for the command to complete */ + ret = wait_event_interruptible_timeout(mptctl_wait, + iocp->ioctl->wait_done == 1, + HZ*60); + + if(ret <=0 && (iocp->ioctl->wait_done != 1 )) { + /* Now we need to reset the board */ + mptctl_timeout_expired(iocp->ioctl); + ret = -ENODATA; + goto fwdl_out; + } + + if (sgl) + kfree_sgl(sgl, sgl_dma, buflist, iocp); + + ReplyMsg = (pFWDownloadReply_t)iocp->ioctl->ReplyFrame; + iocstat = le16_to_cpu(ReplyMsg->IOCStatus) & MPI_IOCSTATUS_MASK; + if (iocstat == MPI_IOCSTATUS_SUCCESS) { + printk(KERN_INFO MYNAM ": F/W update successfully sent to %s!\n", iocp->name); + return 0; + } else if (iocstat == MPI_IOCSTATUS_INVALID_FUNCTION) { + printk(KERN_WARNING MYNAM ": ?Hmmm... %s says it doesn't support F/W download!?!\n", + iocp->name); + printk(KERN_WARNING MYNAM ": (time to go bang on somebodies door)\n"); + return -EBADRQC; + } else if (iocstat == MPI_IOCSTATUS_BUSY) { + printk(KERN_WARNING MYNAM ": Warning! %s says: IOC_BUSY!\n", iocp->name); + printk(KERN_WARNING MYNAM ": (try again later?)\n"); + return -EBUSY; + } else { + printk(KERN_WARNING MYNAM "::ioctl_fwdl() ERROR! %s returned [bad] status = %04xh\n", + iocp->name, iocstat); + printk(KERN_WARNING MYNAM ": (bad VooDoo)\n"); + return -ENOMSG; + } + return 0; + +fwdl_out: + kfree_sgl(sgl, sgl_dma, buflist, iocp); + return ret; +} + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* + * SGE Allocation routine + * + * Inputs: bytes - number of bytes to be transferred + * sgdir - data direction + * sge_offset - offset (in bytes) from the start of the request + * frame to the first SGE + * ioc - pointer to the mptadapter + * Outputs: frags - number of scatter gather elements + * blp - point to the buflist pointer + * sglbuf_dma - pointer to the (dma) sgl + * Returns: Null if failes + * pointer to the (virtual) sgl if successful. + */ +static MptSge_t * +kbuf_alloc_2_sgl(int bytes, u32 sgdir, int sge_offset, int *frags, + struct buflist **blp, dma_addr_t *sglbuf_dma, MPT_ADAPTER *ioc) +{ + MptSge_t *sglbuf = NULL; /* pointer to array of SGE */ + /* and chain buffers */ + struct buflist *buflist = NULL; /* kernel routine */ + MptSge_t *sgl; + int numfrags = 0; + int fragcnt = 0; + int alloc_sz = min(bytes,MAX_KMALLOC_SZ); // avoid kernel warning msg! + int bytes_allocd = 0; + int this_alloc; + dma_addr_t pa; // phys addr + int i, buflist_ent; + int sg_spill = MAX_FRAGS_SPILL1; + int dir; + /* initialization */ + *frags = 0; + *blp = NULL; + + /* Allocate and initialize an array of kernel + * structures for the SG elements. + */ + i = MAX_SGL_BYTES / 8; + buflist = kmalloc(i, GFP_USER); + if (buflist == NULL) + return NULL; + memset(buflist, 0, i); + buflist_ent = 0; + + /* Allocate a single block of memory to store the sg elements and + * the chain buffers. The calling routine is responsible for + * copying the data in this array into the correct place in the + * request and chain buffers. + */ + sglbuf = pci_alloc_consistent(ioc->pcidev, MAX_SGL_BYTES, sglbuf_dma); + if (sglbuf == NULL) + goto free_and_fail; + + if (sgdir & 0x04000000) + dir = PCI_DMA_TODEVICE; + else + dir = PCI_DMA_FROMDEVICE; + + /* At start: + * sgl = sglbuf = point to beginning of sg buffer + * buflist_ent = 0 = first kernel structure + * sg_spill = number of SGE that can be written before the first + * chain element. + * + */ + sgl = sglbuf; + sg_spill = ((ioc->req_sz - sge_offset)/(sizeof(dma_addr_t) + sizeof(u32))) - 1; + while (bytes_allocd < bytes) { + this_alloc = min(alloc_sz, bytes-bytes_allocd); + buflist[buflist_ent].len = this_alloc; + buflist[buflist_ent].kptr = pci_alloc_consistent(ioc->pcidev, + this_alloc, + &pa); + if (buflist[buflist_ent].kptr == NULL) { + alloc_sz = alloc_sz / 2; + if (alloc_sz == 0) { + printk(KERN_WARNING MYNAM "-SG: No can do - " + "not enough memory! :-(\n"); + printk(KERN_WARNING MYNAM "-SG: (freeing %d frags)\n", + numfrags); + goto free_and_fail; + } + continue; + } else { + dma_addr_t dma_addr; + + bytes_allocd += this_alloc; + sgl->FlagsLength = (0x10000000|MPT_SGE_FLAGS_ADDRESSING|sgdir|this_alloc); + dma_addr = pci_map_single(ioc->pcidev, buflist[buflist_ent].kptr, this_alloc, dir); + sgl->Address = dma_addr; + + fragcnt++; + numfrags++; + sgl++; + buflist_ent++; + } + + if (bytes_allocd >= bytes) + break; + + /* Need to chain? */ + if (fragcnt == sg_spill) { + printk(KERN_WARNING MYNAM "-SG: No can do - " "Chain required! :-(\n"); + printk(KERN_WARNING MYNAM "(freeing %d frags)\n", numfrags); + goto free_and_fail; + } + + /* overflow check... */ + if (numfrags*8 > MAX_SGL_BYTES){ + /* GRRRRR... */ + printk(KERN_WARNING MYNAM "-SG: No can do - " + "too many SG frags! :-(\n"); + printk(KERN_WARNING MYNAM "-SG: (freeing %d frags)\n", + numfrags); + goto free_and_fail; + } + } + + /* Last sge fixup: set LE+eol+eob bits */ + sgl[-1].FlagsLength |= 0xC1000000; + + *frags = numfrags; + *blp = buflist; + + dctlprintk((KERN_INFO MYNAM "-SG: kbuf_alloc_2_sgl() - " + "%d SG frags generated!\n", + numfrags)); + + dctlprintk((KERN_INFO MYNAM "-SG: kbuf_alloc_2_sgl() - " + "last (big) alloc_sz=%d\n", + alloc_sz)); + + return sglbuf; + +free_and_fail: + if (sglbuf != NULL) { + int i; + + for (i = 0; i < numfrags; i++) { + dma_addr_t dma_addr; + u8 *kptr; + int len; + + if ((sglbuf[i].FlagsLength >> 24) == 0x30) + continue; + + dma_addr = sglbuf[i].Address; + kptr = buflist[i].kptr; + len = buflist[i].len; + + pci_free_consistent(ioc->pcidev, len, kptr, dma_addr); + } + pci_free_consistent(ioc->pcidev, MAX_SGL_BYTES, sglbuf, *sglbuf_dma); + } + kfree(buflist); + return NULL; +} + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* + * Routine to free the SGL elements. + */ +static void +kfree_sgl(MptSge_t *sgl, dma_addr_t sgl_dma, struct buflist *buflist, MPT_ADAPTER *ioc) +{ + MptSge_t *sg = sgl; + struct buflist *bl = buflist; + u32 nib; + int dir; + int n = 0; + + if (sg->FlagsLength & 0x04000000) + dir = PCI_DMA_TODEVICE; + else + dir = PCI_DMA_FROMDEVICE; + + nib = (sg->FlagsLength & 0xF0000000) >> 28; + while (! (nib & 0x4)) { /* eob */ + /* skip ignore/chain. */ + if (nib == 0 || nib == 3) { + ; + } else if (sg->Address) { + dma_addr_t dma_addr; + void *kptr; + int len; + + dma_addr = sg->Address; + kptr = bl->kptr; + len = bl->len; + pci_unmap_single(ioc->pcidev, dma_addr, len, dir); + pci_free_consistent(ioc->pcidev, len, kptr, dma_addr); + n++; + } + sg++; + bl++; + nib = (le32_to_cpu(sg->FlagsLength) & 0xF0000000) >> 28; + } + + /* we're at eob! */ + if (sg->Address) { + dma_addr_t dma_addr; + void *kptr; + int len; + + dma_addr = sg->Address; + kptr = bl->kptr; + len = bl->len; + pci_unmap_single(ioc->pcidev, dma_addr, len, dir); + pci_free_consistent(ioc->pcidev, len, kptr, dma_addr); + n++; + } + + pci_free_consistent(ioc->pcidev, MAX_SGL_BYTES, sgl, sgl_dma); + kfree(buflist); + dctlprintk((KERN_INFO MYNAM "-SG: Free'd 1 SGL buf + %d kbufs!\n", n)); +} + +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ +/* + * mptctl_getiocinfo - Query the host adapter for IOC information. + * @arg: User space argument + * + * Outputs: None. + * Return: 0 if successful + * -EFAULT if data unavailable + * -ENODEV if no such device/adapter + */ +static int +mptctl_getiocinfo (unsigned long arg, unsigned int data_size) +{ + struct mpt_ioctl_iocinfo __user *uarg = (void __user *) arg; + struct mpt_ioctl_iocinfo *karg; + MPT_ADAPTER *ioc; + struct pci_de |