diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1/file_ops.c')
-rw-r--r-- | drivers/infiniband/hw/hfi1/file_ops.c | 152 |
1 files changed, 91 insertions, 61 deletions
diff --git a/drivers/infiniband/hw/hfi1/file_ops.c b/drivers/infiniband/hw/hfi1/file_ops.c index 3158128..a0c13fa 100644 --- a/drivers/infiniband/hw/hfi1/file_ops.c +++ b/drivers/infiniband/hw/hfi1/file_ops.c @@ -81,19 +81,23 @@ static u64 kvirt_to_phys(void *addr); static int assign_ctxt(struct hfi1_filedata *fd, struct hfi1_user_info *uinfo); static int init_subctxts(struct hfi1_ctxtdata *uctxt, const struct hfi1_user_info *uinfo); -static int init_user_ctxt(struct hfi1_filedata *fd); +static int init_user_ctxt(struct hfi1_filedata *fd, + struct hfi1_ctxtdata *uctxt); static void user_init(struct hfi1_ctxtdata *uctxt); static int get_ctxt_info(struct hfi1_filedata *fd, void __user *ubase, __u32 len); static int get_base_info(struct hfi1_filedata *fd, void __user *ubase, __u32 len); -static int setup_base_ctxt(struct hfi1_filedata *fd); +static int setup_base_ctxt(struct hfi1_filedata *fd, + struct hfi1_ctxtdata *uctxt); static int setup_subctxt(struct hfi1_ctxtdata *uctxt); static int find_sub_ctxt(struct hfi1_filedata *fd, const struct hfi1_user_info *uinfo); static int allocate_ctxt(struct hfi1_filedata *fd, struct hfi1_devdata *dd, - struct hfi1_user_info *uinfo); + struct hfi1_user_info *uinfo, + struct hfi1_ctxtdata **cd); +static void deallocate_ctxt(struct hfi1_ctxtdata *uctxt); static unsigned int poll_urgent(struct file *fp, struct poll_table_struct *pt); static unsigned int poll_next(struct file *fp, struct poll_table_struct *pt); static int user_event_ack(struct hfi1_ctxtdata *uctxt, u16 subctxt, @@ -181,7 +185,7 @@ static int hfi1_file_open(struct inode *inode, struct file *fp) struct hfi1_devdata, user_cdev); - if (!((dd->flags & HFI1_PRESENT) && dd->kregbase)) + if (!((dd->flags & HFI1_PRESENT) && dd->kregbase1)) return -EINVAL; if (!atomic_inc_not_zero(&dd->user_refcount)) @@ -267,12 +271,14 @@ static long hfi1_file_ioctl(struct file *fp, unsigned int cmd, /* * Copy the number of tidlist entries we used * and the length of the buffer we registered. - * These fields are adjacent in the structure so - * we can copy them at the same time. */ addr = arg + offsetof(struct hfi1_tid_info, tidcnt); if (copy_to_user((void __user *)addr, &tinfo.tidcnt, - sizeof(tinfo.tidcnt) + + sizeof(tinfo.tidcnt))) + return -EFAULT; + + addr = arg + offsetof(struct hfi1_tid_info, length); + if (copy_to_user((void __user *)addr, &tinfo.length, sizeof(tinfo.length))) ret = -EFAULT; } @@ -388,8 +394,7 @@ static long hfi1_file_ioctl(struct file *fp, unsigned int cmd, sc_disable(sc); ret = sc_enable(sc); - hfi1_rcvctrl(dd, HFI1_RCVCTRL_CTXT_ENB, - uctxt->ctxt); + hfi1_rcvctrl(dd, HFI1_RCVCTRL_CTXT_ENB, uctxt); } else { ret = sc_restart(sc); } @@ -757,7 +762,7 @@ static int hfi1_file_close(struct inode *inode, struct file *fp) flush_wc(); /* drain user sdma queue */ - hfi1_user_sdma_free_queues(fdata); + hfi1_user_sdma_free_queues(fdata, uctxt); /* release the cpu */ hfi1_put_proc_affinity(fdata->rec_cpu_num); @@ -774,6 +779,8 @@ static int hfi1_file_close(struct inode *inode, struct file *fp) *ev = 0; __clear_bit(fdata->subctxt, uctxt->in_use_ctxts); + fdata->uctxt = NULL; + hfi1_rcd_put(uctxt); /* fdata reference */ if (!bitmap_empty(uctxt->in_use_ctxts, HFI1_MAX_SHARED_CTXTS)) { mutex_unlock(&hfi1_mutex); goto done; @@ -790,34 +797,26 @@ static int hfi1_file_close(struct inode *inode, struct file *fp) HFI1_RCVCTRL_TAILUPD_DIS | HFI1_RCVCTRL_ONE_PKT_EGR_DIS | HFI1_RCVCTRL_NO_RHQ_DROP_DIS | - HFI1_RCVCTRL_NO_EGR_DROP_DIS, uctxt->ctxt); + HFI1_RCVCTRL_NO_EGR_DROP_DIS, uctxt); /* Clear the context's J_KEY */ - hfi1_clear_ctxt_jkey(dd, uctxt->ctxt); + hfi1_clear_ctxt_jkey(dd, uctxt); /* - * Reset context integrity checks to default. - * (writes to CSRs probably belong in chip.c) + * If a send context is allocated, reset context integrity + * checks to default and disable the send context. */ - write_kctxt_csr(dd, uctxt->sc->hw_context, SEND_CTXT_CHECK_ENABLE, - hfi1_pkt_default_send_ctxt_mask(dd, uctxt->sc->type)); - sc_disable(uctxt->sc); + if (uctxt->sc) { + set_pio_integrity(uctxt->sc); + sc_disable(uctxt->sc); + } spin_unlock_irqrestore(&dd->uctxt_lock, flags); - dd->rcd[uctxt->ctxt] = NULL; - - hfi1_user_exp_rcv_grp_free(uctxt); + hfi1_free_ctxt_rcv_groups(uctxt); hfi1_clear_ctxt_pkey(dd, uctxt); - uctxt->rcvwait_to = 0; - uctxt->piowait_to = 0; - uctxt->rcvnowait = 0; - uctxt->pionowait = 0; uctxt->event_flags = 0; - - hfi1_stats.sps_ctxts--; - if (++dd->freectxts == dd->num_user_contexts) - aspm_enable_all(dd); mutex_unlock(&hfi1_mutex); - hfi1_free_ctxtdata(dd, uctxt); + + deallocate_ctxt(uctxt); done: mmdrop(fdata->mm); kobject_put(&dd->kobj); @@ -849,6 +848,7 @@ static int assign_ctxt(struct hfi1_filedata *fd, struct hfi1_user_info *uinfo) { int ret; unsigned int swmajor, swminor; + struct hfi1_ctxtdata *uctxt = NULL; swmajor = uinfo->userversion >> 16; if (swmajor != HFI1_USER_SWMAJOR) @@ -874,7 +874,7 @@ static int assign_ctxt(struct hfi1_filedata *fd, struct hfi1_user_info *uinfo) * couldn't find a sub context. */ if (!ret) - ret = allocate_ctxt(fd, fd->dd, uinfo); + ret = allocate_ctxt(fd, fd->dd, uinfo, &uctxt); mutex_unlock(&hfi1_mutex); @@ -887,31 +887,38 @@ static int assign_ctxt(struct hfi1_filedata *fd, struct hfi1_user_info *uinfo) ret = wait_event_interruptible(fd->uctxt->wait, !test_bit( HFI1_CTXT_BASE_UNINIT, &fd->uctxt->event_flags)); - if (test_bit(HFI1_CTXT_BASE_FAILED, &fd->uctxt->event_flags)) { - clear_bit(fd->subctxt, fd->uctxt->in_use_ctxts); - return -ENOMEM; - } + if (test_bit(HFI1_CTXT_BASE_FAILED, &fd->uctxt->event_flags)) + ret = -ENOMEM; + /* The only thing a sub context needs is the user_xxx stuff */ if (!ret) - ret = init_user_ctxt(fd); + ret = init_user_ctxt(fd, fd->uctxt); if (ret) clear_bit(fd->subctxt, fd->uctxt->in_use_ctxts); + } else if (!ret) { - ret = setup_base_ctxt(fd); - if (fd->uctxt->subctxt_cnt) { + ret = setup_base_ctxt(fd, uctxt); + if (uctxt->subctxt_cnt) { /* If there is an error, set the failed bit. */ if (ret) set_bit(HFI1_CTXT_BASE_FAILED, - &fd->uctxt->event_flags); + &uctxt->event_flags); /* * Base context is done, notify anybody using a * sub-context that is waiting for this completion */ - clear_bit(HFI1_CTXT_BASE_UNINIT, - &fd->uctxt->event_flags); - wake_up(&fd->uctxt->wait); + clear_bit(HFI1_CTXT_BASE_UNINIT, &uctxt->event_flags); + wake_up(&uctxt->wait); } + if (ret) + deallocate_ctxt(uctxt); + } + + /* If an error occurred, clear the reference */ + if (ret && fd->uctxt) { + hfi1_rcd_put(fd->uctxt); + fd->uctxt = NULL; } return ret; @@ -924,7 +931,7 @@ static int assign_ctxt(struct hfi1_filedata *fd, struct hfi1_user_info *uinfo) static int find_sub_ctxt(struct hfi1_filedata *fd, const struct hfi1_user_info *uinfo) { - int i; + u16 i; struct hfi1_devdata *dd = fd->dd; u16 subctxt; @@ -961,6 +968,8 @@ static int find_sub_ctxt(struct hfi1_filedata *fd, fd->uctxt = uctxt; fd->subctxt = subctxt; + + hfi1_rcd_get(uctxt); __set_bit(fd->subctxt, uctxt->in_use_ctxts); return 1; @@ -970,10 +979,11 @@ static int find_sub_ctxt(struct hfi1_filedata *fd, } static int allocate_ctxt(struct hfi1_filedata *fd, struct hfi1_devdata *dd, - struct hfi1_user_info *uinfo) + struct hfi1_user_info *uinfo, + struct hfi1_ctxtdata **cd) { struct hfi1_ctxtdata *uctxt; - unsigned int ctxt; + u16 ctxt; int ret, numa; if (dd->flags & HFI1_FROZEN) { @@ -1058,8 +1068,6 @@ static int allocate_ctxt(struct hfi1_filedata *fd, struct hfi1_devdata *dd, strlcpy(uctxt->comm, current->comm, sizeof(uctxt->comm)); memcpy(uctxt->uuid, uinfo->uuid, sizeof(uctxt->uuid)); uctxt->jkey = generate_jkey(current_uid()); - INIT_LIST_HEAD(&uctxt->sdma_queues); - spin_lock_init(&uctxt->sdma_qlock); hfi1_stats.sps_ctxts++; /* * Disable ASPM when there are open user/PSM contexts to avoid @@ -1067,16 +1075,31 @@ static int allocate_ctxt(struct hfi1_filedata *fd, struct hfi1_devdata *dd, */ if (dd->freectxts-- == dd->num_user_contexts) aspm_disable_all(dd); - fd->uctxt = uctxt; + + *cd = uctxt; return 0; ctxdata_free: + *cd = NULL; dd->rcd[ctxt] = NULL; - hfi1_free_ctxtdata(dd, uctxt); + hfi1_rcd_put(uctxt); return ret; } +static void deallocate_ctxt(struct hfi1_ctxtdata *uctxt) +{ + mutex_lock(&hfi1_mutex); + hfi1_stats.sps_ctxts--; + if (++uctxt->dd->freectxts == uctxt->dd->num_user_contexts) + aspm_enable_all(uctxt->dd); + + /* _rcd_put() should be done after releasing mutex */ + uctxt->dd->rcd[uctxt->ctxt] = NULL; + mutex_unlock(&hfi1_mutex); + hfi1_rcd_put(uctxt); /* dd reference */ +} + static int init_subctxts(struct hfi1_ctxtdata *uctxt, const struct hfi1_user_info *uinfo) { @@ -1153,7 +1176,7 @@ static void user_init(struct hfi1_ctxtdata *uctxt) clear_rcvhdrtail(uctxt); /* Setup J_KEY before enabling the context */ - hfi1_set_ctxt_jkey(uctxt->dd, uctxt->ctxt, uctxt->jkey); + hfi1_set_ctxt_jkey(uctxt->dd, uctxt, uctxt->jkey); rcvctrl_ops = HFI1_RCVCTRL_CTXT_ENB; if (HFI1_CAP_UGET_MASK(uctxt->flags, HDRSUPP)) @@ -1179,7 +1202,7 @@ static void user_init(struct hfi1_ctxtdata *uctxt) rcvctrl_ops |= HFI1_RCVCTRL_TAILUPD_ENB; else rcvctrl_ops |= HFI1_RCVCTRL_TAILUPD_DIS; - hfi1_rcvctrl(uctxt->dd, rcvctrl_ops, uctxt->ctxt); + hfi1_rcvctrl(uctxt->dd, rcvctrl_ops, uctxt); } static int get_ctxt_info(struct hfi1_filedata *fd, void __user *ubase, @@ -1223,23 +1246,25 @@ static int get_ctxt_info(struct hfi1_filedata *fd, void __user *ubase, return ret; } -static int init_user_ctxt(struct hfi1_filedata *fd) +static int init_user_ctxt(struct hfi1_filedata *fd, + struct hfi1_ctxtdata *uctxt) { - struct hfi1_ctxtdata *uctxt = fd->uctxt; int ret; ret = hfi1_user_sdma_alloc_queues(uctxt, fd); if (ret) return ret; - ret = hfi1_user_exp_rcv_init(fd); + ret = hfi1_user_exp_rcv_init(fd, uctxt); + if (ret) + hfi1_user_sdma_free_queues(fd, uctxt); return ret; } -static int setup_base_ctxt(struct hfi1_filedata *fd) +static int setup_base_ctxt(struct hfi1_filedata *fd, + struct hfi1_ctxtdata *uctxt) { - struct hfi1_ctxtdata *uctxt = fd->uctxt; struct hfi1_devdata *dd = uctxt->dd; int ret = 0; @@ -1260,19 +1285,24 @@ static int setup_base_ctxt(struct hfi1_filedata *fd) if (ret) goto setup_failed; - ret = hfi1_user_exp_rcv_grp_init(fd); + ret = hfi1_alloc_ctxt_rcv_groups(uctxt); if (ret) goto setup_failed; - ret = init_user_ctxt(fd); + ret = init_user_ctxt(fd, uctxt); if (ret) goto setup_failed; user_init(uctxt); + /* Now that the context is set up, the fd can get a reference. */ + fd->uctxt = uctxt; + hfi1_rcd_get(uctxt); + return 0; setup_failed: + /* Call _free_ctxtdata, not _rcd_put(). We still need the context. */ hfi1_free_ctxtdata(dd, uctxt); return ret; } @@ -1390,7 +1420,7 @@ static unsigned int poll_next(struct file *fp, spin_lock_irq(&dd->uctxt_lock); if (hdrqempty(uctxt)) { set_bit(HFI1_CTXT_WAITING_RCV, &uctxt->event_flags); - hfi1_rcvctrl(dd, HFI1_RCVCTRL_INTRAVAIL_ENB, uctxt->ctxt); + hfi1_rcvctrl(dd, HFI1_RCVCTRL_INTRAVAIL_ENB, uctxt); pollflag = 0; } else { pollflag = POLLIN | POLLRDNORM; @@ -1409,7 +1439,7 @@ int hfi1_set_uevent_bits(struct hfi1_pportdata *ppd, const int evtbit) { struct hfi1_ctxtdata *uctxt; struct hfi1_devdata *dd = ppd->dd; - unsigned ctxt; + u16 ctxt; int ret = 0; unsigned long flags; @@ -1475,7 +1505,7 @@ static int manage_rcvq(struct hfi1_ctxtdata *uctxt, u16 subctxt, } else { rcvctrl_op = HFI1_RCVCTRL_CTXT_DIS; } - hfi1_rcvctrl(dd, rcvctrl_op, uctxt->ctxt); + hfi1_rcvctrl(dd, rcvctrl_op, uctxt); /* always; new head should be equal to new tail; see above */ bail: return 0; @@ -1525,7 +1555,7 @@ static int set_ctxt_pkey(struct hfi1_ctxtdata *uctxt, u16 subctxt, u16 pkey) } if (intable) - ret = hfi1_set_ctxt_pkey(dd, uctxt->ctxt, pkey); + ret = hfi1_set_ctxt_pkey(dd, uctxt, pkey); done: return ret; } |