diff options
Diffstat (limited to 'drivers/staging/rdma/hfi1/file_ops.c')
| -rw-r--r-- | drivers/staging/rdma/hfi1/file_ops.c | 91 |
1 files changed, 35 insertions, 56 deletions
diff --git a/drivers/staging/rdma/hfi1/file_ops.c b/drivers/staging/rdma/hfi1/file_ops.c index 8396dc5fb6c1..c1c5bf82addb 100644 --- a/drivers/staging/rdma/hfi1/file_ops.c +++ b/drivers/staging/rdma/hfi1/file_ops.c @@ -49,6 +49,8 @@ #include <linux/vmalloc.h> #include <linux/io.h> +#include <rdma/ib.h> + #include "hfi.h" #include "pio.h" #include "device.h" @@ -190,6 +192,10 @@ static ssize_t hfi1_file_write(struct file *fp, const char __user *data, int uctxt_required = 1; int must_be_root = 0; + /* FIXME: This interface cannot continue out of staging */ + if (WARN_ON_ONCE(!ib_safe_file_access(fp))) + return -EACCES; + if (count < sizeof(cmd)) { ret = -EINVAL; goto bail; @@ -791,15 +797,16 @@ static int hfi1_file_close(struct inode *inode, struct file *fp) spin_unlock_irqrestore(&dd->uctxt_lock, flags); dd->rcd[uctxt->ctxt] = NULL; + + hfi1_user_exp_rcv_free(fdata); + hfi1_clear_ctxt_pkey(dd, uctxt->ctxt); + uctxt->rcvwait_to = 0; uctxt->piowait_to = 0; uctxt->rcvnowait = 0; uctxt->pionowait = 0; uctxt->event_flags = 0; - hfi1_user_exp_rcv_free(fdata); - hfi1_clear_ctxt_pkey(dd, uctxt->ctxt); - hfi1_stats.sps_ctxts--; if (++dd->freectxts == dd->num_user_contexts) aspm_enable_all(dd); @@ -1127,27 +1134,13 @@ bail: static int user_init(struct file *fp) { - int ret; unsigned int rcvctrl_ops = 0; struct hfi1_filedata *fd = fp->private_data; struct hfi1_ctxtdata *uctxt = fd->uctxt; /* make sure that the context has already been setup */ - if (!test_bit(HFI1_CTXT_SETUP_DONE, &uctxt->event_flags)) { - ret = -EFAULT; - goto done; - } - - /* - * Subctxts don't need to initialize anything since master - * has done it. - */ - if (fd->subctxt) { - ret = wait_event_interruptible(uctxt->wait, !test_bit( - HFI1_CTXT_MASTER_UNINIT, - &uctxt->event_flags)); - goto expected; - } + if (!test_bit(HFI1_CTXT_SETUP_DONE, &uctxt->event_flags)) + return -EFAULT; /* initialize poll variables... */ uctxt->urgent = 0; @@ -1202,19 +1195,7 @@ static int user_init(struct file *fp) wake_up(&uctxt->wait); } -expected: - /* - * Expected receive has to be setup for all processes (including - * shared contexts). However, it has to be done after the master - * context has been fully configured as it depends on the - * eager/expected split of the RcvArray entries. - * Setting it up here ensures that the subcontexts will be waiting - * (due to the above wait_event_interruptible() until the master - * is setup. - */ - ret = hfi1_user_exp_rcv_init(fp); -done: - return ret; + return 0; } static int get_ctxt_info(struct file *fp, void __user *ubase, __u32 len) @@ -1261,7 +1242,7 @@ static int setup_ctxt(struct file *fp) int ret = 0; /* - * Context should be set up only once (including allocation and + * Context should be set up only once, including allocation and * programming of eager buffers. This is done if context sharing * is not requested or by the master process. */ @@ -1282,10 +1263,29 @@ static int setup_ctxt(struct file *fp) if (ret) goto done; } + } else { + ret = wait_event_interruptible(uctxt->wait, !test_bit( + HFI1_CTXT_MASTER_UNINIT, + &uctxt->event_flags)); + if (ret) + goto done; } + ret = hfi1_user_sdma_alloc_queues(uctxt, fp); if (ret) goto done; + /* + * Expected receive has to be setup for all processes (including + * shared contexts). However, it has to be done after the master + * context has been fully configured as it depends on the + * eager/expected split of the RcvArray entries. + * Setting it up here ensures that the subcontexts will be waiting + * (due to the above wait_event_interruptible() until the master + * is setup. + */ + ret = hfi1_user_exp_rcv_init(fp); + if (ret) + goto done; set_bit(HFI1_CTXT_SETUP_DONE, &uctxt->event_flags); done: @@ -1565,29 +1565,8 @@ static loff_t ui_lseek(struct file *filp, loff_t offset, int whence) { struct hfi1_devdata *dd = filp->private_data; - switch (whence) { - case SEEK_SET: - break; - case SEEK_CUR: - offset += filp->f_pos; - break; - case SEEK_END: - offset = ((dd->kregend - dd->kregbase) + DC8051_DATA_MEM_SIZE) - - offset; - break; - default: - return -EINVAL; - } - - if (offset < 0) - return -EINVAL; - - if (offset >= (dd->kregend - dd->kregbase) + DC8051_DATA_MEM_SIZE) - return -EINVAL; - - filp->f_pos = offset; - - return filp->f_pos; + return fixed_size_llseek(filp, offset, whence, + (dd->kregend - dd->kregbase) + DC8051_DATA_MEM_SIZE); } /* NOTE: assumes unsigned long is 8 bytes */ |