static int set_ctxt_pkey(struct hfi1_ctxtdata *, unsigned, u16);
static int manage_rcvq(struct hfi1_ctxtdata *, unsigned, int);
static int vma_fault(struct vm_area_struct *, struct vm_fault *);
+static long hfi1_file_ioctl(struct file *fp, unsigned int cmd,
+ unsigned long arg);
static const struct file_operations hfi1_file_ops = {
.owner = THIS_MODULE,
.write_iter = hfi1_write_iter,
.open = hfi1_file_open,
.release = hfi1_file_close,
+ .unlocked_ioctl = hfi1_file_ioctl,
.poll = hfi1_poll,
.mmap = hfi1_file_mmap,
.llseek = noop_llseek,
return fp->private_data ? 0 : -ENOMEM;
}
+static long hfi1_file_ioctl(struct file *fp, unsigned int cmd,
+ unsigned long arg)
+{
+ struct hfi1_filedata *fd = fp->private_data;
+ struct hfi1_ctxtdata *uctxt = fd->uctxt;
+ struct hfi1_user_info uinfo;
+ struct hfi1_tid_info tinfo;
+ int ret = 0;
+ unsigned long addr;
+ int uval = 0;
+ unsigned long ul_uval = 0;
+ u16 uval16 = 0;
+
+ if (cmd != HFI1_IOCTL_ASSIGN_CTXT &&
+ cmd != HFI1_IOCTL_GET_VERS &&
+ !uctxt)
+ return -EINVAL;
+
+ switch (cmd) {
+ case HFI1_IOCTL_ASSIGN_CTXT:
+ if (copy_from_user(&uinfo,
+ (struct hfi1_user_info __user *)arg,
+ sizeof(uinfo)))
+ return -EFAULT;
+
+ ret = assign_ctxt(fp, &uinfo);
+ if (ret < 0)
+ return ret;
+ setup_ctxt(fp);
+ if (ret)
+ return ret;
+ ret = user_init(fp);
+ break;
+ case HFI1_IOCTL_CTXT_INFO:
+ ret = get_ctxt_info(fp, (void __user *)(unsigned long)arg,
+ sizeof(struct hfi1_ctxt_info));
+ break;
+ case HFI1_IOCTL_USER_INFO:
+ ret = get_base_info(fp, (void __user *)(unsigned long)arg,
+ sizeof(struct hfi1_base_info));
+ break;
+ case HFI1_IOCTL_CREDIT_UPD:
+ if (uctxt && uctxt->sc)
+ sc_return_credits(uctxt->sc);
+ break;
+
+ case HFI1_IOCTL_TID_UPDATE:
+ if (copy_from_user(&tinfo,
+ (struct hfi11_tid_info __user *)arg,
+ sizeof(tinfo)))
+ return -EFAULT;
+
+ ret = hfi1_user_exp_rcv_setup(fp, &tinfo);
+ if (!ret) {
+ /*
+ * 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.length)))
+ ret = -EFAULT;
+ }
+ break;
+
+ case HFI1_IOCTL_TID_FREE:
+ if (copy_from_user(&tinfo,
+ (struct hfi11_tid_info __user *)arg,
+ sizeof(tinfo)))
+ return -EFAULT;
+
+ ret = hfi1_user_exp_rcv_clear(fp, &tinfo);
+ if (ret)
+ break;
+ addr = arg + offsetof(struct hfi1_tid_info, tidcnt);
+ if (copy_to_user((void __user *)addr, &tinfo.tidcnt,
+ sizeof(tinfo.tidcnt)))
+ ret = -EFAULT;
+ break;
+
+ case HFI1_IOCTL_TID_INVAL_READ:
+ if (copy_from_user(&tinfo,
+ (struct hfi11_tid_info __user *)arg,
+ sizeof(tinfo)))
+ return -EFAULT;
+
+ ret = hfi1_user_exp_rcv_invalid(fp, &tinfo);
+ if (ret)
+ break;
+ addr = arg + offsetof(struct hfi1_tid_info, tidcnt);
+ if (copy_to_user((void __user *)addr, &tinfo.tidcnt,
+ sizeof(tinfo.tidcnt)))
+ ret = -EFAULT;
+ break;
+
+ case HFI1_IOCTL_RECV_CTRL:
+ ret = get_user(uval, (int __user *)arg);
+ if (ret != 0)
+ return -EFAULT;
+ ret = manage_rcvq(uctxt, fd->subctxt, uval);
+ break;
+
+ case HFI1_IOCTL_POLL_TYPE:
+ ret = get_user(uval, (int __user *)arg);
+ if (ret != 0)
+ return -EFAULT;
+ uctxt->poll_type = (typeof(uctxt->poll_type))uval;
+ break;
+
+ case HFI1_IOCTL_ACK_EVENT:
+ ret = get_user(ul_uval, (unsigned long __user *)arg);
+ if (ret != 0)
+ return -EFAULT;
+ ret = user_event_ack(uctxt, fd->subctxt, ul_uval);
+ break;
+
+ case HFI1_IOCTL_SET_PKEY:
+ ret = get_user(uval16, (u16 __user *)arg);
+ if (ret != 0)
+ return -EFAULT;
+ if (HFI1_CAP_IS_USET(PKEY_CHECK))
+ ret = set_ctxt_pkey(uctxt, fd->subctxt, uval16);
+ else
+ return -EPERM;
+ break;
+
+ case HFI1_IOCTL_CTXT_RESET: {
+ struct send_context *sc;
+ struct hfi1_devdata *dd;
+
+ if (!uctxt || !uctxt->dd || !uctxt->sc)
+ return -EINVAL;
+
+ /*
+ * There is no protection here. User level has to
+ * guarantee that no one will be writing to the send
+ * context while it is being re-initialized.
+ * If user level breaks that guarantee, it will break
+ * it's own context and no one else's.
+ */
+ dd = uctxt->dd;
+ sc = uctxt->sc;
+ /*
+ * Wait until the interrupt handler has marked the
+ * context as halted or frozen. Report error if we time
+ * out.
+ */
+ wait_event_interruptible_timeout(
+ sc->halt_wait, (sc->flags & SCF_HALTED),
+ msecs_to_jiffies(SEND_CTXT_HALT_TIMEOUT));
+ if (!(sc->flags & SCF_HALTED))
+ return -ENOLCK;
+
+ /*
+ * If the send context was halted due to a Freeze,
+ * wait until the device has been "unfrozen" before
+ * resetting the context.
+ */
+ if (sc->flags & SCF_FROZEN) {
+ wait_event_interruptible_timeout(
+ dd->event_queue,
+ !(ACCESS_ONCE(dd->flags) & HFI1_FROZEN),
+ msecs_to_jiffies(SEND_CTXT_HALT_TIMEOUT));
+ if (dd->flags & HFI1_FROZEN)
+ return -ENOLCK;
+
+ if (dd->flags & HFI1_FORCED_FREEZE)
+ /*
+ * Don't allow context reset if we are into
+ * forced freeze
+ */
+ return -ENODEV;
+
+ sc_disable(sc);
+ ret = sc_enable(sc);
+ hfi1_rcvctrl(dd, HFI1_RCVCTRL_CTXT_ENB,
+ uctxt->ctxt);
+ } else {
+ ret = sc_restart(sc);
+ }
+ if (!ret)
+ sc_return_credits(sc);
+ break;
+ }
+
+ case HFI1_IOCTL_GET_VERS:
+ uval = HFI1_USER_SWVERSION;
+ if (put_user(uval, (int __user *)arg))
+ return -EFAULT;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return ret;
+}
+
static ssize_t hfi1_file_write(struct file *fp, const char __user *data,
size_t count, loff_t *offset)
{
*/
#define HFI1_USER_SWMINOR 1
+/*
+ * We will encode the major/minor inside a single 32bit version number.
+ */
+#define HFI1_SWMAJOR_SHIFT 16
+
/*
* Set of HW and driver capability/feature bits.
* These bit values are used to configure enabled/disabled HW and
#define HFI1_CMD_SET_PKEY 11 /* set context's pkey */
#define HFI1_CMD_CTXT_RESET 12 /* reset context's HW send context */
#define HFI1_CMD_TID_INVAL_READ 13 /* read TID cache invalidations */
+#define HFI1_CMD_GET_VERS 14 /* get the version of the user cdev */
+
+/*
+ * User IOCTLs can not go above 128 if they do then see common.h and change the
+ * base for the snoop ioctl
+ */
+#define IB_IOCTL_MAGIC 0x1b /* See Documentation/ioctl/ioctl-number.txt */
+
+/*
+ * Make the ioctls occupy the last 0xf0-0xff portion of the IB range
+ */
+#define __NUM(cmd) (HFI1_CMD_##cmd + 0xe0)
+
+struct hfi1_cmd;
+#define HFI1_IOCTL_ASSIGN_CTXT \
+ _IOWR(IB_IOCTL_MAGIC, __NUM(ASSIGN_CTXT), struct hfi1_user_info)
+#define HFI1_IOCTL_CTXT_INFO \
+ _IOW(IB_IOCTL_MAGIC, __NUM(CTXT_INFO), struct hfi1_ctxt_info)
+#define HFI1_IOCTL_USER_INFO \
+ _IOW(IB_IOCTL_MAGIC, __NUM(USER_INFO), struct hfi1_base_info)
+#define HFI1_IOCTL_TID_UPDATE \
+ _IOWR(IB_IOCTL_MAGIC, __NUM(TID_UPDATE), struct hfi1_tid_info)
+#define HFI1_IOCTL_TID_FREE \
+ _IOWR(IB_IOCTL_MAGIC, __NUM(TID_FREE), struct hfi1_tid_info)
+#define HFI1_IOCTL_CREDIT_UPD \
+ _IO(IB_IOCTL_MAGIC, __NUM(CREDIT_UPD))
+#define HFI1_IOCTL_RECV_CTRL \
+ _IOW(IB_IOCTL_MAGIC, __NUM(RECV_CTRL), int)
+#define HFI1_IOCTL_POLL_TYPE \
+ _IOW(IB_IOCTL_MAGIC, __NUM(POLL_TYPE), int)
+#define HFI1_IOCTL_ACK_EVENT \
+ _IOW(IB_IOCTL_MAGIC, __NUM(ACK_EVENT), unsigned long)
+#define HFI1_IOCTL_SET_PKEY \
+ _IOW(IB_IOCTL_MAGIC, __NUM(SET_PKEY), __u16)
+#define HFI1_IOCTL_CTXT_RESET \
+ _IO(IB_IOCTL_MAGIC, __NUM(CTXT_RESET))
+#define HFI1_IOCTL_TID_INVAL_READ \
+ _IOWR(IB_IOCTL_MAGIC, __NUM(TID_INVAL_READ), struct hfi1_tid_info)
+#define HFI1_IOCTL_GET_VERS \
+ _IOR(IB_IOCTL_MAGIC, __NUM(GET_VERS), int)
#define _HFI1_EVENT_FROZEN_BIT 0
#define _HFI1_EVENT_LINKDOWN_BIT 1
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff