IB/ipath: add calls to new 7220 code and enable in build

This patch adds the initialization calls into the new 7220 HCA files,
changes the Makefile to compile and link the new files, and code to
handle send DMA.

Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 94 insertions, 3 deletions

diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c
index b87d3126e4dc..d38ba293323d 100644
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c
@@ -36,21 +36,28 @@
 #include <linux/cdev.h>
 #include <linux/swap.h>
 #include <linux/vmalloc.h>
+#include <linux/highmem.h>
+#include <linux/io.h>
+#include <linux/jiffies.h>
 #include <asm/pgtable.h>
 
 #include "ipath_kernel.h"
 #include "ipath_common.h"
+#include "ipath_user_sdma.h"
 
 static int ipath_open(struct inode *, struct file *);
 static int ipath_close(struct inode *, struct file *);
 static ssize_t ipath_write(struct file *, const char __user *, size_t,
 			   loff_t *);
+static ssize_t ipath_writev(struct kiocb *, const struct iovec *,
+			    unsigned long , loff_t);
 static unsigned int ipath_poll(struct file *, struct poll_table_struct *);
 static int ipath_mmap(struct file *, struct vm_area_struct *);
 
 static const struct file_operations ipath_file_ops = {
 	.owner = THIS_MODULE,
 	.write = ipath_write,
+	.aio_write = ipath_writev,
 	.open = ipath_open,
 	.release = ipath_close,
 	.poll = ipath_poll,
@@ -1870,10 +1877,9 @@ static int ipath_assign_port(struct file *fp,
 	if (ipath_compatible_subports(swmajor, swminor) &&
 	    uinfo->spu_subport_cnt &&
 	    (ret = find_shared_port(fp, uinfo))) {
-		mutex_unlock(&ipath_mutex);
 		if (ret > 0)
 			ret = 0;
-		goto done;
+		goto done_chk_sdma;
 	}
 
 	i_minor = iminor(fp->f_path.dentry->d_inode) - IPATH_USER_MINOR_BASE;
@@ -1885,6 +1891,21 @@ static int ipath_assign_port(struct file *fp,
 	else
 		ret = find_best_unit(fp, uinfo);
 
+done_chk_sdma:
+	if (!ret) {
+		struct ipath_filedata *fd = fp->private_data;
+		const struct ipath_portdata *pd = fd->pd;
+		const struct ipath_devdata *dd = pd->port_dd;
+
+		fd->pq = ipath_user_sdma_queue_create(&dd->pcidev->dev,
+						      dd->ipath_unit,
+						      pd->port_port,
+						      fd->subport);
+
+		if (!fd->pq)
+			ret = -ENOMEM;
+	}
+
 	mutex_unlock(&ipath_mutex);
 
 done:
@@ -2042,6 +2063,13 @@ static int ipath_close(struct inode *in, struct file *fp)
 		mutex_unlock(&ipath_mutex);
 		goto bail;
 	}
+
+	dd = pd->port_dd;
+
+	/* drain user sdma queue */
+	ipath_user_sdma_queue_drain(dd, fd->pq);
+	ipath_user_sdma_queue_destroy(fd->pq);
+
 	if (--pd->port_cnt) {
 		/*
 		 * XXX If the master closes the port before the slave(s),
@@ -2054,7 +2082,6 @@ static int ipath_close(struct inode *in, struct file *fp)
 		goto bail;
 	}
 	port = pd->port_port;
-	dd = pd->port_dd;
 
 	if (pd->port_hdrqfull) {
 		ipath_cdbg(PROC, "%s[%u] had %u rcvhdrqfull errors "
@@ -2176,6 +2203,35 @@ static int ipath_get_slave_info(struct ipath_portdata *pd,
 	return ret;
 }
 
+static int ipath_sdma_get_inflight(struct ipath_user_sdma_queue *pq,
+				   u32 __user *inflightp)
+{
+	const u32 val = ipath_user_sdma_inflight_counter(pq);
+
+	if (put_user(val, inflightp))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int ipath_sdma_get_complete(struct ipath_devdata *dd,
+				   struct ipath_user_sdma_queue *pq,
+				   u32 __user *completep)
+{
+	u32 val;
+	int err;
+
+	err = ipath_user_sdma_make_progress(dd, pq);
+	if (err < 0)
+		return err;
+
+	val = ipath_user_sdma_complete_counter(pq);
+	if (put_user(val, completep))
+		return -EFAULT;
+
+	return 0;
+}
+
 static ssize_t ipath_write(struct file *fp, const char __user *data,
 			   size_t count, loff_t *off)
 {
@@ -2250,6 +2306,16 @@ static ssize_t ipath_write(struct file *fp, const char __user *data,
 		dest = &cmd.cmd.armlaunch_ctrl;
 		src = &ucmd->cmd.armlaunch_ctrl;
 		break;
+	case IPATH_CMD_SDMA_INFLIGHT:
+		copy = sizeof(cmd.cmd.sdma_inflight);
+		dest = &cmd.cmd.sdma_inflight;
+		src = &ucmd->cmd.sdma_inflight;
+		break;
+	case IPATH_CMD_SDMA_COMPLETE:
+		copy = sizeof(cmd.cmd.sdma_complete);
+		dest = &cmd.cmd.sdma_complete;
+		src = &ucmd->cmd.sdma_complete;
+		break;
 	default:
 		ret = -EINVAL;
 		goto bail;
@@ -2331,6 +2397,17 @@ static ssize_t ipath_write(struct file *fp, const char __user *data,
 		else
 			ipath_disable_armlaunch(pd->port_dd);
 		break;
+	case IPATH_CMD_SDMA_INFLIGHT:
+		ret = ipath_sdma_get_inflight(user_sdma_queue_fp(fp),
+					      (u32 __user *) (unsigned long)
+					      cmd.cmd.sdma_inflight);
+		break;
+	case IPATH_CMD_SDMA_COMPLETE:
+		ret = ipath_sdma_get_complete(pd->port_dd,
+					      user_sdma_queue_fp(fp),
+					      (u32 __user *) (unsigned long)
+					      cmd.cmd.sdma_complete);
+		break;
 	}
 
 	if (ret >= 0)
@@ -2340,6 +2417,20 @@ bail:
 	return ret;
 }
 
+static ssize_t ipath_writev(struct kiocb *iocb, const struct iovec *iov,
+			    unsigned long dim, loff_t off)
+{
+	struct file *filp = iocb->ki_filp;
+	struct ipath_filedata *fp = filp->private_data;
+	struct ipath_portdata *pd = port_fp(filp);
+	struct ipath_user_sdma_queue *pq = fp->pq;
+
+	if (!dim)
+		return -EINVAL;
+
+	return ipath_user_sdma_writev(pd->port_dd, pq, iov, dim);
+}
+
 static struct class *ipath_class;
 
 static int init_cdev(int minor, char *name, const struct file_operations *fops,