Merge branches 'mlx5', 'qib' and 'srp' into for-next

drivers/infiniband/hw/mlx5/mr.c

@@ -171,7 +171,7 @@ static ssize_t size_write(struct file *filp, const char __user *buf,
 	int c;
 
 	if (copy_from_user(lbuf, buf, sizeof(lbuf)))
-		return -EPERM;
+		return -EFAULT;
 
 	c = order2idx(dev, ent->order);
 	lbuf[sizeof(lbuf) - 1] = 0;
@@ -208,7 +208,7 @@ static ssize_t size_read(struct file *filp, char __user *buf, size_t count,
 		return err;
 
 	if (copy_to_user(buf, lbuf, err))
-		return -EPERM;
+		return -EFAULT;
 
 	*pos += err;
 
@@ -233,7 +233,7 @@ static ssize_t limit_write(struct file *filp, const char __user *buf,
 	int c;
 
 	if (copy_from_user(lbuf, buf, sizeof(lbuf)))
-		return -EPERM;
+		return -EFAULT;
 
 	c = order2idx(dev, ent->order);
 	lbuf[sizeof(lbuf) - 1] = 0;
@@ -270,7 +270,7 @@ static ssize_t limit_read(struct file *filp, char __user *buf, size_t count,
 		return err;
 
 	if (copy_to_user(buf, lbuf, err))
-		return -EPERM;
+		return -EFAULT;
 
 	*pos += err;
 

drivers/infiniband/hw/qib/qib.h

@@ -1348,7 +1348,7 @@ static inline int __qib_sdma_running(struct qib_pportdata *ppd)
 	return ppd->sdma_state.current_state == qib_sdma_state_s99_running;
 }
 int qib_sdma_running(struct qib_pportdata *);
-
+void dump_sdma_state(struct qib_pportdata *ppd);
 void __qib_sdma_process_event(struct qib_pportdata *, enum qib_sdma_events);
 void qib_sdma_process_event(struct qib_pportdata *, enum qib_sdma_events);
 

drivers/infiniband/hw/qib/qib_iba7322.c

@@ -83,6 +83,7 @@ static void ibsd_wr_allchans(struct qib_pportdata *, int, unsigned, unsigned);
 static void serdes_7322_los_enable(struct qib_pportdata *, int);
 static int serdes_7322_init_old(struct qib_pportdata *);
 static int serdes_7322_init_new(struct qib_pportdata *);
+static void dump_sdma_7322_state(struct qib_pportdata *);
 
 #define BMASK(msb, lsb) (((1 << ((msb) + 1 - (lsb))) - 1) << (lsb))
 
@@ -652,6 +653,7 @@ struct qib_chippport_specific {
 	u8 ibmalfusesnap;
 	struct qib_qsfp_data qsfp_data;
 	char epmsgbuf[192]; /* for port error interrupt msg buffer */
+	char sdmamsgbuf[192]; /* for per-port sdma error messages */
 };
 
 static struct {
@@ -1601,6 +1603,15 @@ static void sdma_7322_p_errors(struct qib_pportdata *ppd, u64 errs)
 
 	spin_lock_irqsave(&ppd->sdma_lock, flags);
 
+	if (errs != QIB_E_P_SDMAHALT) {
+		/* SDMA errors have QIB_E_P_SDMAHALT and another bit set */
+		qib_dev_porterr(dd, ppd->port,
+			"SDMA %s 0x%016llx %s\n",
+			qib_sdma_state_names[ppd->sdma_state.current_state],
+			errs, ppd->cpspec->sdmamsgbuf);
+		dump_sdma_7322_state(ppd);
+	}
+
 	switch (ppd->sdma_state.current_state) {
 	case qib_sdma_state_s00_hw_down:
 		break;
@@ -2156,6 +2167,29 @@ static void qib_7322_handle_hwerrors(struct qib_devdata *dd, char *msg,
 
 	qib_dev_err(dd, "%s hardware error\n", msg);
 
+	if (hwerrs &
+		   (SYM_MASK(HwErrMask, SDmaMemReadErrMask_0) |
+		    SYM_MASK(HwErrMask, SDmaMemReadErrMask_1))) {
+		int pidx = 0;
+		int err;
+		unsigned long flags;
+		struct qib_pportdata *ppd = dd->pport;
+		for (; pidx < dd->num_pports; ++pidx, ppd++) {
+			err = 0;
+			if (pidx == 0 && (hwerrs &
+				SYM_MASK(HwErrMask, SDmaMemReadErrMask_0)))
+				err++;
+			if (pidx == 1 && (hwerrs &
+				SYM_MASK(HwErrMask, SDmaMemReadErrMask_1)))
+				err++;
+			if (err) {
+				spin_lock_irqsave(&ppd->sdma_lock, flags);
+				dump_sdma_7322_state(ppd);
+				spin_unlock_irqrestore(&ppd->sdma_lock, flags);
+			}
+		}
+	}
+
 	if (isfatal && !dd->diag_client) {
 		qib_dev_err(dd,
 			"Fatal Hardware Error, no longer usable, SN %.16s\n",
@@ -6753,6 +6787,86 @@ static void qib_sdma_set_7322_desc_cnt(struct qib_pportdata *ppd, unsigned cnt)
 	qib_write_kreg_port(ppd, krp_senddmadesccnt, cnt);
 }
 
+/*
+ * sdma_lock should be acquired before calling this routine
+ */
+static void dump_sdma_7322_state(struct qib_pportdata *ppd)
+{
+	u64 reg, reg1, reg2;
+
+	reg = qib_read_kreg_port(ppd, krp_senddmastatus);
+	qib_dev_porterr(ppd->dd, ppd->port,
+		"SDMA senddmastatus: 0x%016llx\n", reg);
+
+	reg = qib_read_kreg_port(ppd, krp_sendctrl);
+	qib_dev_porterr(ppd->dd, ppd->port,
+		"SDMA sendctrl: 0x%016llx\n", reg);
+
+	reg = qib_read_kreg_port(ppd, krp_senddmabase);
+	qib_dev_porterr(ppd->dd, ppd->port,
+		"SDMA senddmabase: 0x%016llx\n", reg);
+
+	reg = qib_read_kreg_port(ppd, krp_senddmabufmask0);
+	reg1 = qib_read_kreg_port(ppd, krp_senddmabufmask1);
+	reg2 = qib_read_kreg_port(ppd, krp_senddmabufmask2);
+	qib_dev_porterr(ppd->dd, ppd->port,
+		"SDMA senddmabufmask 0:%llx  1:%llx  2:%llx\n",
+		 reg, reg1, reg2);
+
+	/* get bufuse bits, clear them, and print them again if non-zero */
+	reg = qib_read_kreg_port(ppd, krp_senddmabuf_use0);
+	qib_write_kreg_port(ppd, krp_senddmabuf_use0, reg);
+	reg1 = qib_read_kreg_port(ppd, krp_senddmabuf_use1);
+	qib_write_kreg_port(ppd, krp_senddmabuf_use0, reg1);
+	reg2 = qib_read_kreg_port(ppd, krp_senddmabuf_use2);
+	qib_write_kreg_port(ppd, krp_senddmabuf_use0, reg2);
+	/* 0 and 1 should always be zero, so print as short form */
+	qib_dev_porterr(ppd->dd, ppd->port,
+		 "SDMA current senddmabuf_use 0:%llx  1:%llx  2:%llx\n",
+		 reg, reg1, reg2);
+	reg = qib_read_kreg_port(ppd, krp_senddmabuf_use0);
+	reg1 = qib_read_kreg_port(ppd, krp_senddmabuf_use1);
+	reg2 = qib_read_kreg_port(ppd, krp_senddmabuf_use2);
+	/* 0 and 1 should always be zero, so print as short form */
+	qib_dev_porterr(ppd->dd, ppd->port,
+		 "SDMA cleared senddmabuf_use 0:%llx  1:%llx  2:%llx\n",
+		 reg, reg1, reg2);
+
+	reg = qib_read_kreg_port(ppd, krp_senddmatail);
+	qib_dev_porterr(ppd->dd, ppd->port,
+		"SDMA senddmatail: 0x%016llx\n", reg);
+
+	reg = qib_read_kreg_port(ppd, krp_senddmahead);
+	qib_dev_porterr(ppd->dd, ppd->port,
+		"SDMA senddmahead: 0x%016llx\n", reg);
+
+	reg = qib_read_kreg_port(ppd, krp_senddmaheadaddr);
+	qib_dev_porterr(ppd->dd, ppd->port,
+		"SDMA senddmaheadaddr: 0x%016llx\n", reg);
+
+	reg = qib_read_kreg_port(ppd, krp_senddmalengen);
+	qib_dev_porterr(ppd->dd, ppd->port,
+		"SDMA senddmalengen: 0x%016llx\n", reg);
+
+	reg = qib_read_kreg_port(ppd, krp_senddmadesccnt);
+	qib_dev_porterr(ppd->dd, ppd->port,
+		"SDMA senddmadesccnt: 0x%016llx\n", reg);
+
+	reg = qib_read_kreg_port(ppd, krp_senddmaidlecnt);
+	qib_dev_porterr(ppd->dd, ppd->port,
+		"SDMA senddmaidlecnt: 0x%016llx\n", reg);
+
+	reg = qib_read_kreg_port(ppd, krp_senddmaprioritythld);
+	qib_dev_porterr(ppd->dd, ppd->port,
+		"SDMA senddmapriorityhld: 0x%016llx\n", reg);
+
+	reg = qib_read_kreg_port(ppd, krp_senddmareloadcnt);
+	qib_dev_porterr(ppd->dd, ppd->port,
+		"SDMA senddmareloadcnt: 0x%016llx\n", reg);
+
+	dump_sdma_state(ppd);
+}
+
 static struct sdma_set_state_action sdma_7322_action_table[] = {
 	[qib_sdma_state_s00_hw_down] = {
 		.go_s99_running_tofalse = 1,

drivers/infiniband/hw/qib/qib_init.c

@@ -1350,7 +1350,7 @@ static void cleanup_device_data(struct qib_devdata *dd)
 	if (dd->pageshadow) {
 		struct page **tmpp = dd->pageshadow;
 		dma_addr_t *tmpd = dd->physshadow;
-		int i, cnt = 0;
+		int i;
 
 		for (ctxt = 0; ctxt < dd->cfgctxts; ctxt++) {
 			int ctxt_tidbase = ctxt * dd->rcvtidcnt;
@@ -1363,13 +1363,13 @@ static void cleanup_device_data(struct qib_devdata *dd)
 					       PAGE_SIZE, PCI_DMA_FROMDEVICE);
 				qib_release_user_pages(&tmpp[i], 1);
 				tmpp[i] = NULL;
-				cnt++;
 			}
 		}
 
-		tmpp = dd->pageshadow;
 		dd->pageshadow = NULL;
 		vfree(tmpp);
+		dd->physshadow = NULL;
+		vfree(tmpd);
 	}
 
 	/*

drivers/infiniband/hw/qib/qib_sdma.c

@@ -708,6 +708,62 @@ int qib_sdma_verbs_send(struct qib_pportdata *ppd,
 	return ret;
 }
 
+/*
+ * sdma_lock should be acquired before calling this routine
+ */
+void dump_sdma_state(struct qib_pportdata *ppd)
+{
+	struct qib_sdma_desc *descq;
+	struct qib_sdma_txreq *txp, *txpnext;
+	__le64 *descqp;
+	u64 desc[2];
+	dma_addr_t addr;
+	u16 gen, dwlen, dwoffset;
+	u16 head, tail, cnt;
+
+	head = ppd->sdma_descq_head;
+	tail = ppd->sdma_descq_tail;
+	cnt = qib_sdma_descq_freecnt(ppd);
+	descq = ppd->sdma_descq;
+
+	qib_dev_porterr(ppd->dd, ppd->port,
+		"SDMA ppd->sdma_descq_head: %u\n", head);
+	qib_dev_porterr(ppd->dd, ppd->port,
+		"SDMA ppd->sdma_descq_tail: %u\n", tail);
+	qib_dev_porterr(ppd->dd, ppd->port,
+		"SDMA sdma_descq_freecnt: %u\n", cnt);
+
+	/* print info for each entry in the descriptor queue */
+	while (head != tail) {
+		char flags[6] = { 'x', 'x', 'x', 'x', 'x', 0 };
+
+		descqp = &descq[head].qw[0];
+		desc[0] = le64_to_cpu(descqp[0]);
+		desc[1] = le64_to_cpu(descqp[1]);
+		flags[0] = (desc[0] & 1<<15) ? 'I' : '-';
+		flags[1] = (desc[0] & 1<<14) ? 'L' : 'S';
+		flags[2] = (desc[0] & 1<<13) ? 'H' : '-';
+		flags[3] = (desc[0] & 1<<12) ? 'F' : '-';
+		flags[4] = (desc[0] & 1<<11) ? 'L' : '-';
+		addr = (desc[1] << 32) | ((desc[0] >> 32) & 0xfffffffcULL);
+		gen = (desc[0] >> 30) & 3ULL;
+		dwlen = (desc[0] >> 14) & (0x7ffULL << 2);
+		dwoffset = (desc[0] & 0x7ffULL) << 2;
+		qib_dev_porterr(ppd->dd, ppd->port,
+			"SDMA sdmadesc[%u]: flags:%s addr:0x%016llx gen:%u len:%u bytes offset:%u bytes\n",
+			 head, flags, addr, gen, dwlen, dwoffset);
+		if (++head == ppd->sdma_descq_cnt)
+			head = 0;
+	}
+
+	/* print dma descriptor indices from the TX requests */
+	list_for_each_entry_safe(txp, txpnext, &ppd->sdma_activelist,
+				 list)
+		qib_dev_porterr(ppd->dd, ppd->port,
+			"SDMA txp->start_idx: %u txp->next_descq_idx: %u\n",
+			txp->start_idx, txp->next_descq_idx);
+}
+
 void qib_sdma_process_event(struct qib_pportdata *ppd,
 	enum qib_sdma_events event)
 {

drivers/infiniband/ulp/srp/ib_srp.c

@@ -1753,8 +1753,7 @@ static int srp_abort(struct scsi_cmnd *scmnd)
 	if (!req || !srp_claim_req(target, req, scmnd))
 		return FAILED;
 	if (srp_send_tsk_mgmt(target, req->index, scmnd->device->lun,
-			      SRP_TSK_ABORT_TASK) == 0 ||
-	    target->transport_offline)
+			      SRP_TSK_ABORT_TASK) == 0)
 		ret = SUCCESS;
 	else if (target->transport_offline)
 		ret = FAST_IO_FAIL;

drivers/net/ethernet/mellanox/mlx5/core/cmd.c

@@ -693,7 +693,7 @@ static ssize_t dbg_write(struct file *filp, const char __user *buf,
 		return -ENOMEM;
 
 	if (copy_from_user(lbuf, buf, sizeof(lbuf)))
-		return -EPERM;
+		return -EFAULT;
 
 	lbuf[sizeof(lbuf) - 1] = 0;
 
@@ -889,7 +889,7 @@ static ssize_t data_write(struct file *filp, const char __user *buf,
 		return -ENOMEM;
 
 	if (copy_from_user(ptr, buf, count)) {
-		err = -EPERM;
+		err = -EFAULT;
 		goto out;
 	}
 	dbg->in_msg = ptr;
@@ -919,7 +919,7 @@ static ssize_t data_read(struct file *filp, char __user *buf, size_t count,
 
 	copy = min_t(int, count, dbg->outlen);
 	if (copy_to_user(buf, dbg->out_msg, copy))
-		return -EPERM;
+		return -EFAULT;
 
 	*pos += copy;
 
@@ -949,7 +949,7 @@ static ssize_t outlen_read(struct file *filp, char __user *buf, size_t count,
 		return err;
 
 	if (copy_to_user(buf, &outlen, err))
-		return -EPERM;
+		return -EFAULT;
 
 	*pos += err;
 
@@ -974,7 +974,7 @@ static ssize_t outlen_write(struct file *filp, const char __user *buf,
 	dbg->outlen = 0;
 
 	if (copy_from_user(outlen_str, buf, count))
-		return -EPERM;
+		return -EFAULT;
 
 	outlen_str[7] = 0;
 

drivers/net/ethernet/mellanox/mlx5/core/debugfs.c

@@ -148,7 +148,6 @@ static ssize_t average_read(struct file *filp, char __user *buf, size_t count,
 	struct mlx5_cmd_stats *stats;
 	u64 field = 0;
 	int ret;
-	int err;
 	char tbuf[22];
 
 	if (*pos)
@@ -161,9 +160,8 @@ static ssize_t average_read(struct file *filp, char __user *buf, size_t count,
 	spin_unlock(&stats->lock);
 	ret = snprintf(tbuf, sizeof(tbuf), "%llu\n", field);
 	if (ret > 0) {
-		err = copy_to_user(buf, tbuf, ret);
-		if (err)
-			return err;
+		if (copy_to_user(buf, tbuf, ret))
+			return -EFAULT;
 	}
 
 	*pos += ret;
@@ -418,7 +416,6 @@ static ssize_t dbg_read(struct file *filp, char __user *buf, size_t count,
 	char tbuf[18];
 	u64 field;
 	int ret;
-	int err;
 
 	if (*pos)
 		return 0;
@@ -445,9 +442,8 @@ static ssize_t dbg_read(struct file *filp, char __user *buf, size_t count,
 
 	ret = snprintf(tbuf, sizeof(tbuf), "0x%llx\n", field);
 	if (ret > 0) {
-		err = copy_to_user(buf, tbuf, ret);
-		if (err)
-			return err;
+		if (copy_to_user(buf, tbuf, ret))
+			return -EFAULT;
 	}
 
 	*pos += ret;

drivers/net/ethernet/mellanox/mlx5/core/main.c

@@ -212,7 +212,7 @@ static int handle_hca_cap(struct mlx5_core_dev *dev)
 		set_ctx->hca_cap.log_max_qp = dev->profile->log_max_qp;
 
 	memset(&set_out, 0, sizeof(set_out));
-	set_ctx->hca_cap.uar_page_sz = cpu_to_be16(PAGE_SHIFT - 12);
+	set_ctx->hca_cap.log_uar_page_sz = cpu_to_be16(PAGE_SHIFT - 12);
 	set_ctx->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_SET_HCA_CAP);
 	err = mlx5_cmd_exec(dev, set_ctx, sizeof(*set_ctx),
 				 &set_out, sizeof(set_out));

include/linux/mlx5/device.h

@@ -317,8 +317,8 @@ struct mlx5_hca_cap {
 	u8	log_max_pd;
 	u8	rsvd25;
 	u8	log_max_xrcd;
-	u8	rsvd26[40];
-	__be32  uar_page_sz;
+	u8	rsvd26[42];
+	__be16  log_uar_page_sz;
 	u8	rsvd27[28];
 	u8	log_msx_atomic_size_qp;
 	u8	rsvd28[2];