diff options
| -rw-r--r-- | drivers/staging/rdma/hfi1/file_ops.c | 102 | ||||
| -rw-r--r-- | include/uapi/rdma/hfi/hfi1_user.h | 19 |
2 files changed, 21 insertions, 100 deletions
diff --git a/drivers/staging/rdma/hfi1/file_ops.c b/drivers/staging/rdma/hfi1/file_ops.c index c1c5bf82addb..518cd891b63d 100644 --- a/drivers/staging/rdma/hfi1/file_ops.c +++ b/drivers/staging/rdma/hfi1/file_ops.c @@ -86,8 +86,7 @@ static int get_ctxt_info(struct file *, void __user *, __u32); static int get_base_info(struct file *, void __user *, __u32); static int setup_ctxt(struct file *); static int setup_subctxt(struct hfi1_ctxtdata *); -static int get_user_context(struct file *, struct hfi1_user_info *, - int, unsigned); +static int get_user_context(struct file *, struct hfi1_user_info *, int); static int find_shared_ctxt(struct file *, const struct hfi1_user_info *); static int allocate_ctxt(struct file *, struct hfi1_devdata *, struct hfi1_user_info *); @@ -836,7 +835,7 @@ static u64 kvirt_to_phys(void *addr) static int assign_ctxt(struct file *fp, struct hfi1_user_info *uinfo) { int i_minor, ret = 0; - unsigned swmajor, swminor, alg = HFI1_ALG_ACROSS; + unsigned int swmajor, swminor; swmajor = uinfo->userversion >> 16; if (swmajor != HFI1_USER_SWMAJOR) { @@ -846,9 +845,6 @@ static int assign_ctxt(struct file *fp, struct hfi1_user_info *uinfo) swminor = uinfo->userversion & 0xffff; - if (uinfo->hfi1_alg < HFI1_ALG_COUNT) - alg = uinfo->hfi1_alg; - mutex_lock(&hfi1_mutex); /* First, lets check if we need to setup a shared context? */ if (uinfo->subctxt_cnt) { @@ -868,7 +864,7 @@ static int assign_ctxt(struct file *fp, struct hfi1_user_info *uinfo) */ if (!ret) { i_minor = iminor(file_inode(fp)) - HFI1_USER_MINOR_BASE; - ret = get_user_context(fp, uinfo, i_minor - 1, alg); + ret = get_user_context(fp, uinfo, i_minor); } done_unlock: mutex_unlock(&hfi1_mutex); @@ -876,71 +872,26 @@ done: return ret; } -/* return true if the device available for general use */ -static int usable_device(struct hfi1_devdata *dd) -{ - struct hfi1_pportdata *ppd = dd->pport; - - return driver_lstate(ppd) == IB_PORT_ACTIVE; -} - static int get_user_context(struct file *fp, struct hfi1_user_info *uinfo, - int devno, unsigned alg) + int devno) { struct hfi1_devdata *dd = NULL; - int ret = 0, devmax, npresent, nup, dev; + int devmax, npresent, nup; devmax = hfi1_count_units(&npresent, &nup); - if (!npresent) { - ret = -ENXIO; - goto done; - } - if (!nup) { - ret = -ENETDOWN; - goto done; - } - if (devno >= 0) { - dd = hfi1_lookup(devno); - if (!dd) - ret = -ENODEV; - else if (!dd->freectxts) - ret = -EBUSY; - } else { - struct hfi1_devdata *pdd; - - if (alg == HFI1_ALG_ACROSS) { - unsigned free = 0U; - - for (dev = 0; dev < devmax; dev++) { - pdd = hfi1_lookup(dev); - if (!pdd) - continue; - if (!usable_device(pdd)) - continue; - if (pdd->freectxts && - pdd->freectxts > free) { - dd = pdd; - free = pdd->freectxts; - } - } - } else { - for (dev = 0; dev < devmax; dev++) { - pdd = hfi1_lookup(dev); - if (!pdd) - continue; - if (!usable_device(pdd)) - continue; - if (pdd->freectxts) { - dd = pdd; - break; - } - } - } - if (!dd) - ret = -EBUSY; - } -done: - return ret ? ret : allocate_ctxt(fp, dd, uinfo); + if (!npresent) + return -ENXIO; + + if (!nup) + return -ENETDOWN; + + dd = hfi1_lookup(devno); + if (!dd) + return -ENODEV; + else if (!dd->freectxts) + return -EBUSY; + + return allocate_ctxt(fp, dd, uinfo); } static int find_shared_ctxt(struct file *fp, @@ -1698,15 +1649,8 @@ static const struct file_operations ui_file_ops = { #define UI_OFFSET 192 /* device minor offset for UI devices */ static int create_ui = 1; -static struct cdev wildcard_cdev; -static struct device *wildcard_device; - -static atomic_t user_count = ATOMIC_INIT(0); - static void user_remove(struct hfi1_devdata *dd) { - if (atomic_dec_return(&user_count) == 0) - hfi1_cdev_cleanup(&wildcard_cdev, &wildcard_device); hfi1_cdev_cleanup(&dd->user_cdev, &dd->user_device); hfi1_cdev_cleanup(&dd->ui_cdev, &dd->ui_device); @@ -1717,16 +1661,8 @@ static int user_add(struct hfi1_devdata *dd) char name[10]; int ret; - if (atomic_inc_return(&user_count) == 1) { - ret = hfi1_cdev_init(0, class_name(), &hfi1_file_ops, - &wildcard_cdev, &wildcard_device, - true); - if (ret) - goto done; - } - snprintf(name, sizeof(name), "%s_%d", class_name(), dd->unit); - ret = hfi1_cdev_init(dd->unit + 1, name, &hfi1_file_ops, + ret = hfi1_cdev_init(dd->unit, name, &hfi1_file_ops, &dd->user_cdev, &dd->user_device, true); if (ret) diff --git a/include/uapi/rdma/hfi/hfi1_user.h b/include/uapi/rdma/hfi/hfi1_user.h index a533cecab14f..09558999ca1d 100644 --- a/include/uapi/rdma/hfi/hfi1_user.h +++ b/include/uapi/rdma/hfi/hfi1_user.h @@ -75,7 +75,7 @@ * may not be implemented; the user code must deal with this if it * cares, or it must abort after initialization reports the difference. */ -#define HFI1_USER_SWMINOR 0 +#define HFI1_USER_SWMINOR 1 /* * Set of HW and driver capability/feature bits. @@ -107,19 +107,6 @@ #define HFI1_RCVHDR_ENTSIZE_16 (1UL << 1) #define HFI1_RCVDHR_ENTSIZE_32 (1UL << 2) -/* - * If the unit is specified via open, HFI choice is fixed. If port is - * specified, it's also fixed. Otherwise we try to spread contexts - * across ports and HFIs, using different algorithms. WITHIN is - * the old default, prior to this mechanism. - */ -#define HFI1_ALG_ACROSS 0 /* round robin contexts across HFIs, then - * ports; this is the default */ -#define HFI1_ALG_WITHIN 1 /* use all contexts on an HFI (round robin - * active ports within), then next HFI */ -#define HFI1_ALG_COUNT 2 /* number of algorithm choices */ - - /* User commands. */ #define HFI1_CMD_ASSIGN_CTXT 1 /* allocate HFI and context */ #define HFI1_CMD_CTXT_INFO 2 /* find out what resources we got */ @@ -199,9 +186,7 @@ struct hfi1_user_info { * Should be set to HFI1_USER_SWVERSION. */ __u32 userversion; - __u16 pad; - /* HFI selection algorithm, if unit has not selected */ - __u16 hfi1_alg; + __u32 pad; /* * If two or more processes wish to share a context, each process * must set the subcontext_cnt and subcontext_id to the same |