[PATCH 17/20] sdk_dpaa: Import from QorIQ SDK Linux

Sebastian Huber sebastian.huber at embedded-brains.de
Fri Jan 19 13:54:07 UTC 2018


http://git.freescale.com/git/cgit.cgi/ppc/sdk/linux.git

Commit 1ae843c08261402b2c35d83422e4fa1e313611f4 (fsl-sdk-v2.0-1703).
---
 .../ethernet/freescale/sdk_dpaa/dpaa_eth_base.c    | 265 +++++++++++
 .../ethernet/freescale/sdk_dpaa/dpaa_eth_base.h    |  50 ++
 .../ethernet/freescale/sdk_dpaa/dpaa_eth_common.h  | 229 ++++++++++
 .../ethernet/freescale/sdk_dpaa/dpaa_eth_macless.c | 502 +++++++++++++++++++++
 4 files changed, 1046 insertions(+)
 create mode 100644 linux/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_base.c
 create mode 100644 linux/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_base.h
 create mode 100644 linux/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.h
 create mode 100644 linux/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_macless.c

diff --git a/linux/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_base.c b/linux/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_base.c
new file mode 100644
index 000000000..2256d4f1e
--- /dev/null
+++ b/linux/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_base.c
@@ -0,0 +1,265 @@
+#include <machine/rtems-bsd-kernel-space.h>
+
+/* Copyright 2008-2013 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *	 notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *	 notice, this list of conditions and the following disclaimer in the
+ *	 documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Freescale Semiconductor nor the
+ *	 names of its contributors may be used to endorse or promote products
+ *	 derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef CONFIG_FSL_DPAA_ETH_DEBUG
+#define pr_fmt(fmt) \
+	KBUILD_MODNAME ": %s:%hu:%s() " fmt, \
+	KBUILD_BASENAME".c", __LINE__, __func__
+#else
+#define pr_fmt(fmt) \
+	KBUILD_MODNAME ": " fmt
+#endif
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/of_platform.h>
+#include <linux/of_net.h>
+#include <linux/etherdevice.h>
+#include <linux/kthread.h>
+#include <linux/percpu.h>
+#include <linux/highmem.h>
+#include <linux/sort.h>
+#include <linux/fsl_qman.h>
+#include "dpaa_eth.h"
+#include "dpaa_eth_common.h"
+#include "dpaa_eth_base.h"
+
+#define DPA_DESCRIPTION "FSL DPAA Advanced drivers:"
+
+MODULE_LICENSE("Dual BSD/GPL");
+
+uint8_t advanced_debug = -1;
+module_param(advanced_debug, byte, S_IRUGO);
+MODULE_PARM_DESC(advanced_debug, "Module/Driver verbosity level");
+EXPORT_SYMBOL(advanced_debug);
+
+static int dpa_bp_cmp(const void *dpa_bp0, const void *dpa_bp1)
+{
+	return ((struct dpa_bp *)dpa_bp0)->size -
+			((struct dpa_bp *)dpa_bp1)->size;
+}
+
+struct dpa_bp * __cold __must_check /* __attribute__((nonnull)) */
+dpa_bp_probe(struct platform_device *_of_dev, size_t *count)
+{
+	int			 i, lenp, na, ns, err;
+	struct device		*dev;
+	struct device_node	*dev_node;
+	const __be32		*bpool_cfg;
+	struct dpa_bp		*dpa_bp;
+	u32			bpid;
+
+	dev = &_of_dev->dev;
+
+	*count = of_count_phandle_with_args(dev->of_node,
+			"fsl,bman-buffer-pools", NULL);
+	if (*count < 1) {
+		dev_err(dev, "missing fsl,bman-buffer-pools device tree entry\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	dpa_bp = devm_kzalloc(dev, *count * sizeof(*dpa_bp), GFP_KERNEL);
+	if (dpa_bp == NULL) {
+		dev_err(dev, "devm_kzalloc() failed\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	dev_node = of_find_node_by_path("/");
+	if (unlikely(dev_node == NULL)) {
+		dev_err(dev, "of_find_node_by_path(/) failed\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	na = of_n_addr_cells(dev_node);
+	ns = of_n_size_cells(dev_node);
+
+	for (i = 0; i < *count; i++) {
+		of_node_put(dev_node);
+
+		dev_node = of_parse_phandle(dev->of_node,
+				"fsl,bman-buffer-pools", i);
+		if (dev_node == NULL) {
+			dev_err(dev, "of_find_node_by_phandle() failed\n");
+			return ERR_PTR(-EFAULT);
+		}
+
+		if (unlikely(!of_device_is_compatible(dev_node, "fsl,bpool"))) {
+			dev_err(dev,
+				"!of_device_is_compatible(%s, fsl,bpool)\n",
+				dev_node->full_name);
+			dpa_bp = ERR_PTR(-EINVAL);
+			goto _return_of_node_put;
+		}
+
+		err = of_property_read_u32(dev_node, "fsl,bpid", &bpid);
+		if (err) {
+			dev_err(dev, "Cannot find buffer pool ID in the device tree\n");
+			dpa_bp = ERR_PTR(-EINVAL);
+			goto _return_of_node_put;
+		}
+		dpa_bp[i].bpid = (uint8_t)bpid;
+
+		bpool_cfg = of_get_property(dev_node, "fsl,bpool-ethernet-cfg",
+					&lenp);
+		if (bpool_cfg && (lenp == (2 * ns + na) * sizeof(*bpool_cfg))) {
+			const uint32_t *seed_pool;
+
+			dpa_bp[i].config_count =
+				(int)of_read_number(bpool_cfg, ns);
+			dpa_bp[i].size	=
+				(size_t)of_read_number(bpool_cfg + ns, ns);
+			dpa_bp[i].paddr	=
+				of_read_number(bpool_cfg + 2 * ns, na);
+
+			seed_pool = of_get_property(dev_node,
+					"fsl,bpool-ethernet-seeds", &lenp);
+			dpa_bp[i].seed_pool = !!seed_pool;
+
+		} else {
+			dev_err(dev,
+				"Missing/invalid fsl,bpool-ethernet-cfg device tree entry for node %s\n",
+				dev_node->full_name);
+			dpa_bp = ERR_PTR(-EINVAL);
+			goto _return_of_node_put;
+		}
+	}
+
+	sort(dpa_bp, *count, sizeof(*dpa_bp), dpa_bp_cmp, NULL);
+
+	return dpa_bp;
+
+_return_of_node_put:
+	if (dev_node)
+		of_node_put(dev_node);
+
+	return dpa_bp;
+}
+EXPORT_SYMBOL(dpa_bp_probe);
+
+int dpa_bp_shared_port_seed(struct dpa_bp *bp)
+{
+	void __iomem **ptr;
+
+	/* In MAC-less and Shared-MAC scenarios the physical
+	 * address of the buffer pool in device tree is set
+	 * to 0 to specify that another entity (USDPAA) will
+	 * allocate and seed the buffers
+	 */
+	if (!bp->paddr)
+		return 0;
+
+	/* allocate memory region for buffers */
+	devm_request_mem_region(bp->dev, bp->paddr,
+			bp->size * bp->config_count, KBUILD_MODNAME);
+	/* managed ioremap unmapping */
+	ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
+	if (!ptr)
+		return -EIO;
+#ifndef CONFIG_PPC
+	bp->vaddr = ioremap_cache_ns(bp->paddr, bp->size * bp->config_count);
+#else
+	bp->vaddr = ioremap_prot(bp->paddr, bp->size * bp->config_count, 0);
+#endif
+	if (bp->vaddr == NULL) {
+		pr_err("Could not map memory for pool %d\n", bp->bpid);
+		devres_free(ptr);
+		return -EIO;
+	}
+	*ptr = bp->vaddr;
+	devres_add(bp->dev, ptr);
+
+	/* seed pool with buffers from that memory region */
+	if (bp->seed_pool) {
+		int count = bp->target_count;
+		dma_addr_t addr = bp->paddr;
+
+		while (count) {
+			struct bm_buffer bufs[8];
+			uint8_t num_bufs = 0;
+
+			do {
+				BUG_ON(addr > 0xffffffffffffull);
+				bufs[num_bufs].bpid = bp->bpid;
+				bm_buffer_set64(&bufs[num_bufs++], addr);
+				addr += bp->size;
+
+			} while (--count && (num_bufs < 8));
+
+			while (bman_release(bp->pool, bufs, num_bufs, 0))
+				cpu_relax();
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(dpa_bp_shared_port_seed);
+
+int dpa_bp_create(struct net_device *net_dev, struct dpa_bp *dpa_bp,
+		size_t count)
+{
+	struct dpa_priv_s *priv = netdev_priv(net_dev);
+	int i;
+
+	priv->dpa_bp = dpa_bp;
+	priv->bp_count = count;
+
+	for (i = 0; i < count; i++) {
+		int err;
+		err = dpa_bp_alloc(&dpa_bp[i]);
+		if (err < 0) {
+			dpa_bp_free(priv);
+			priv->dpa_bp = NULL;
+			return err;
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(dpa_bp_create);
+
+static int __init __cold dpa_advanced_load(void)
+{
+	pr_info(DPA_DESCRIPTION "\n");
+
+	return 0;
+}
+module_init(dpa_advanced_load);
+
+static void __exit __cold dpa_advanced_unload(void)
+{
+	pr_debug(KBUILD_MODNAME ": -> %s:%s()\n",
+		 KBUILD_BASENAME".c", __func__);
+
+}
+module_exit(dpa_advanced_unload);
diff --git a/linux/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_base.h b/linux/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_base.h
new file mode 100644
index 000000000..6f5704132
--- /dev/null
+++ b/linux/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_base.h
@@ -0,0 +1,50 @@
+/* Copyright 2008-2013 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *	 notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *	 notice, this list of conditions and the following disclaimer in the
+ *	 documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Freescale Semiconductor nor the
+ *	 names of its contributors may be used to endorse or promote products
+ *	 derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __DPAA_ETH_BASE_H
+#define __DPAA_ETH_BASE_H
+
+#include <linux/etherdevice.h> /* struct net_device */
+#include <linux/fsl_bman.h> /* struct bm_buffer */
+#include <linux/of_platform.h> /* struct platform_device */
+#include <linux/net_tstamp.h>	/* struct hwtstamp_config */
+
+extern uint8_t advanced_debug;
+extern const struct dpa_fq_cbs_t shared_fq_cbs;
+extern int __hot dpa_shared_tx(struct sk_buff *skb, struct net_device *net_dev);
+
+struct dpa_bp * __cold __must_check /* __attribute__((nonnull)) */
+dpa_bp_probe(struct platform_device *_of_dev, size_t *count);
+int dpa_bp_create(struct net_device *net_dev, struct dpa_bp *dpa_bp,
+		size_t count);
+int dpa_bp_shared_port_seed(struct dpa_bp *bp);
+
+#endif /* __DPAA_ETH_BASE_H */
diff --git a/linux/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.h b/linux/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.h
new file mode 100644
index 000000000..022b4c2d0
--- /dev/null
+++ b/linux/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_common.h
@@ -0,0 +1,229 @@
+/* Copyright 2008-2013 Freescale Semiconductor, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *	 notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *	 notice, this list of conditions and the following disclaimer in the
+ *	 documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Freescale Semiconductor nor the
+ *	 names of its contributors may be used to endorse or promote products
+ *	 derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __DPAA_ETH_COMMON_H
+#define __DPAA_ETH_COMMON_H
+
+#include <linux/etherdevice.h> /* struct net_device */
+#include <linux/fsl_bman.h> /* struct bm_buffer */
+#include <linux/of_platform.h> /* struct platform_device */
+#include <linux/net_tstamp.h>	/* struct hwtstamp_config */
+
+#include "dpaa_eth.h"
+#include "lnxwrp_fsl_fman.h"
+
+#define dpaa_eth_init_port(type, port, param, errq_id, defq_id, buf_layout,\
+			   frag_enabled) \
+{ \
+	param.errq = errq_id; \
+	param.defq = defq_id; \
+	param.priv_data_size = buf_layout->priv_data_size; \
+	param.parse_results = buf_layout->parse_results; \
+	param.hash_results = buf_layout->hash_results; \
+	param.frag_enable = frag_enabled; \
+	param.time_stamp = buf_layout->time_stamp; \
+	param.manip_extra_space = buf_layout->manip_extra_space; \
+	param.data_align = buf_layout->data_align; \
+	fm_set_##type##_port_params(port, &param); \
+}
+
+#define DPA_SGT_MAX_ENTRIES 16 /* maximum number of entries in SG Table */
+
+#define DPA_SGT_ENTRIES_THRESHOLD	DPA_SGT_MAX_ENTRIES
+#ifndef CONFIG_PPC
+/* each S/G entry can be divided into two S/G entries during errata W/A */
+#define DPA_SGT_4K_ENTRIES_THRESHOLD	7
+#endif
+
+#define DPA_BUFF_RELEASE_MAX 8 /* maximum number of buffers released at once */
+
+#define DPA_RX_PCD_HI_PRIO_FQ_INIT_FAIL(dpa_fq, _errno) \
+	(((dpa_fq)->fq_type == FQ_TYPE_RX_PCD_HI_PRIO) && \
+	  (_errno == -EIO))
+/* return codes for the dpaa-eth hooks */
+enum dpaa_eth_hook_result {
+	/* fd/skb was retained by the hook.
+	 *
+	 * On the Rx path, this means the Ethernet driver will _not_
+	 * deliver the skb to the stack. Instead, the hook implementation
+	 * is expected to properly dispose of the skb.
+	 *
+	 * On the Tx path, the Ethernet driver's dpa_tx() function will
+	 * immediately return NETDEV_TX_OK. The hook implementation is expected
+	 * to free the skb. *DO*NOT* release it to BMan, or enqueue it to FMan,
+	 * unless you know exactly what you're doing!
+	 *
+	 * On the confirmation/error paths, the Ethernet driver will _not_
+	 * perform any fd cleanup, nor update the interface statistics.
+	 */
+	DPAA_ETH_STOLEN,
+	/* fd/skb was returned to the Ethernet driver for regular processing.
+	 * The hook is not allowed to, for instance, reallocate the skb (as if
+	 * by linearizing, copying, cloning or reallocating the headroom).
+	 */
+	DPAA_ETH_CONTINUE
+};
+
+typedef enum dpaa_eth_hook_result (*dpaa_eth_ingress_hook_t)(
+		struct sk_buff *skb, struct net_device *net_dev, u32 fqid);
+typedef enum dpaa_eth_hook_result (*dpaa_eth_egress_hook_t)(
+		struct sk_buff *skb, struct net_device *net_dev);
+typedef enum dpaa_eth_hook_result (*dpaa_eth_confirm_hook_t)(
+		struct net_device *net_dev, const struct qm_fd *fd, u32 fqid);
+
+/* used in napi related functions */
+extern u16 qman_portal_max;
+
+/* from dpa_ethtool.c */
+extern const struct ethtool_ops dpa_ethtool_ops;
+
+#ifdef CONFIG_FSL_DPAA_HOOKS
+/* Various hooks used for unit-testing and/or fastpath optimizations.
+ * Currently only one set of such hooks is supported.
+ */
+struct dpaa_eth_hooks_s {
+	/* Invoked on the Tx private path, immediately after receiving the skb
+	 * from the stack.
+	 */
+	dpaa_eth_egress_hook_t	tx;
+
+	/* Invoked on the Rx private path, right before passing the skb
+	 * up the stack. At that point, the packet's protocol id has already
+	 * been set. The skb's data pointer is now at the L3 header, and
+	 * skb->mac_header points to the L2 header. skb->len has been adjusted
+	 * to be the length of L3+payload (i.e., the length of the
+	 * original frame minus the L2 header len).
+	 * For more details on what the skb looks like, see eth_type_trans().
+	 */
+	dpaa_eth_ingress_hook_t	rx_default;
+
+	/* Driver hook for the Rx error private path. */
+	dpaa_eth_confirm_hook_t rx_error;
+	/* Driver hook for the Tx confirmation private path. */
+	dpaa_eth_confirm_hook_t tx_confirm;
+	/* Driver hook for the Tx error private path. */
+	dpaa_eth_confirm_hook_t tx_error;
+};
+
+void fsl_dpaa_eth_set_hooks(struct dpaa_eth_hooks_s *hooks);
+
+extern struct dpaa_eth_hooks_s dpaa_eth_hooks;
+#endif
+
+int dpa_netdev_init(struct net_device *net_dev,
+		    const uint8_t *mac_addr,
+		    uint16_t tx_timeout);
+int __cold dpa_start(struct net_device *net_dev);
+int __cold dpa_stop(struct net_device *net_dev);
+void __cold dpa_timeout(struct net_device *net_dev);
+struct rtnl_link_stats64 * __cold
+dpa_get_stats64(struct net_device *net_dev,
+		struct rtnl_link_stats64 *stats);
+int dpa_change_mtu(struct net_device *net_dev, int new_mtu);
+int dpa_ndo_init(struct net_device *net_dev);
+int dpa_set_features(struct net_device *dev, netdev_features_t features);
+netdev_features_t dpa_fix_features(struct net_device *dev,
+		netdev_features_t features);
+#ifdef CONFIG_FSL_DPAA_TS
+u64 dpa_get_timestamp_ns(const struct dpa_priv_s *priv,
+			enum port_type rx_tx, const void *data);
+/* Updates the skb shared hw timestamp from the hardware timestamp */
+int dpa_get_ts(const struct dpa_priv_s *priv, enum port_type rx_tx,
+	struct skb_shared_hwtstamps *shhwtstamps, const void *data);
+#endif /* CONFIG_FSL_DPAA_TS */
+int dpa_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+int __cold dpa_remove(struct platform_device *of_dev);
+struct mac_device * __cold __must_check
+__attribute__((nonnull)) dpa_mac_probe(struct platform_device *_of_dev);
+int dpa_set_mac_address(struct net_device *net_dev, void *addr);
+void dpa_set_rx_mode(struct net_device *net_dev);
+void dpa_set_buffers_layout(struct mac_device *mac_dev,
+		struct dpa_buffer_layout_s *layout);
+int __attribute__((nonnull))
+dpa_bp_alloc(struct dpa_bp *dpa_bp);
+void __cold __attribute__((nonnull))
+dpa_bp_free(struct dpa_priv_s *priv);
+struct dpa_bp *dpa_bpid2pool(int bpid);
+void dpa_bpid2pool_map(int bpid, struct dpa_bp *dpa_bp);
+bool dpa_bpid2pool_use(int bpid);
+void dpa_bp_drain(struct dpa_bp *bp);
+#ifdef CONFIG_FSL_DPAA_ETH_USE_NDO_SELECT_QUEUE
+u16 dpa_select_queue(struct net_device *net_dev, struct sk_buff *skb,
+		     void *accel_priv, select_queue_fallback_t fallback);
+#endif
+struct dpa_fq *dpa_fq_alloc(struct device *dev,
+			    u32 fq_start,
+			    u32 fq_count,
+			    struct list_head *list,
+			    enum dpa_fq_type fq_type);
+int dpa_fq_probe_mac(struct device *dev, struct list_head *list,
+		     struct fm_port_fqs *port_fqs,
+		     bool tx_conf_fqs_per_core,
+		     enum port_type ptype);
+int dpa_get_channel(void);
+void dpa_release_channel(void);
+int dpaa_eth_add_channel(void *__arg);
+int dpaa_eth_cgr_init(struct dpa_priv_s *priv);
+void dpa_fq_setup(struct dpa_priv_s *priv, const struct dpa_fq_cbs_t *fq_cbs,
+		struct fm_port *tx_port);
+int dpa_fq_init(struct dpa_fq *dpa_fq, bool td_enable);
+int dpa_fqs_init(struct device *dev, struct list_head *list, bool td_enable);
+int __cold __attribute__((nonnull))
+dpa_fq_free(struct device *dev, struct list_head *list);
+void dpaa_eth_init_ports(struct mac_device *mac_dev,
+		struct dpa_bp *bp, size_t count,
+		struct fm_port_fqs *port_fqs,
+		struct dpa_buffer_layout_s *buf_layout,
+		struct device *dev);
+void dpa_release_sgt(struct qm_sg_entry *sgt);
+void __attribute__((nonnull))
+dpa_fd_release(const struct net_device *net_dev, const struct qm_fd *fd);
+void count_ern(struct dpa_percpu_priv_s *percpu_priv,
+		      const struct qm_mr_entry *msg);
+int dpa_enable_tx_csum(struct dpa_priv_s *priv,
+	struct sk_buff *skb, struct qm_fd *fd, char *parse_results);
+#ifdef CONFIG_FSL_DPAA_CEETM
+void dpa_enable_ceetm(struct net_device *dev);
+void dpa_disable_ceetm(struct net_device *dev);
+#endif
+struct proxy_device {
+		struct mac_device *mac_dev;
+};
+
+/* mac device control functions exposed by proxy interface*/
+int dpa_proxy_start(struct net_device *net_dev);
+int dpa_proxy_stop(struct proxy_device *proxy_dev, struct net_device *net_dev);
+int dpa_proxy_set_mac_address(struct proxy_device *proxy_dev,
+			  struct net_device *net_dev);
+int dpa_proxy_set_rx_mode(struct proxy_device *proxy_dev,
+		      struct net_device *net_dev);
+
+#endif /* __DPAA_ETH_COMMON_H */
diff --git a/linux/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_macless.c b/linux/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_macless.c
new file mode 100644
index 000000000..78abf79f1
--- /dev/null
+++ b/linux/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_macless.c
@@ -0,0 +1,502 @@
+#include <machine/rtems-bsd-kernel-space.h>
+
+/* Copyright 2008-2013 Freescale Semiconductor Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *	 notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *	 notice, this list of conditions and the following disclaimer in the
+ *	 documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Freescale Semiconductor nor the
+ *	 names of its contributors may be used to endorse or promote products
+ *	 derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef CONFIG_FSL_DPAA_ETH_DEBUG
+#define pr_fmt(fmt) \
+	KBUILD_MODNAME ": %s:%hu:%s() " fmt, \
+	KBUILD_BASENAME".c", __LINE__, __func__
+#else
+#define pr_fmt(fmt) \
+	KBUILD_MODNAME ": " fmt
+#endif
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/of_net.h>
+#include <linux/etherdevice.h>
+#include <linux/kthread.h>
+#include <linux/percpu.h>
+#ifndef __rtems__
+#include <linux/highmem.h>
+#include <linux/fsl_qman.h>
+#include "dpaa_eth.h"
+#include "dpaa_eth_common.h"
+#include "dpaa_eth_base.h"
+#include "lnxwrp_fsl_fman.h" /* fm_get_rx_extra_headroom(), fm_get_max_frm() */
+#include "mac.h"
+#endif /* __rtems__ */
+
+/* For MAC-based interfaces, we compute the tx needed headroom from the
+ * associated Tx port's buffer layout settings.
+ * For MACless interfaces just use a default value.
+ */
+#define DPA_DEFAULT_TX_HEADROOM	64
+
+#define DPA_DESCRIPTION "FSL DPAA MACless Ethernet driver"
+
+MODULE_LICENSE("Dual BSD/GPL");
+
+MODULE_DESCRIPTION(DPA_DESCRIPTION);
+
+#ifndef __rtems__
+/* This has to work in tandem with the DPA_CS_THRESHOLD_xxx values. */
+static uint16_t macless_tx_timeout = 1000;
+module_param(macless_tx_timeout, ushort, S_IRUGO);
+MODULE_PARM_DESC(macless_tx_timeout, "The MACless Tx timeout in ms");
+#endif /* __rtems__ */
+
+/* forward declarations */
+static int __cold dpa_macless_start(struct net_device *net_dev);
+static int __cold dpa_macless_stop(struct net_device *net_dev);
+static int __cold dpa_macless_set_address(struct net_device *net_dev,
+					  void *addr);
+static void __cold dpa_macless_set_rx_mode(struct net_device *net_dev);
+
+static int dpaa_eth_macless_probe(struct platform_device *_of_dev);
+static netdev_features_t
+dpa_macless_fix_features(struct net_device *dev, netdev_features_t features);
+
+static const struct net_device_ops dpa_macless_ops = {
+	.ndo_open = dpa_macless_start,
+	.ndo_start_xmit = dpa_shared_tx,
+	.ndo_stop = dpa_macless_stop,
+	.ndo_tx_timeout = dpa_timeout,
+	.ndo_get_stats64 = dpa_get_stats64,
+	.ndo_set_mac_address = dpa_macless_set_address,
+	.ndo_set_rx_mode = dpa_macless_set_rx_mode,
+	.ndo_validate_addr = eth_validate_addr,
+#ifdef CONFIG_FSL_DPAA_ETH_USE_NDO_SELECT_QUEUE
+	.ndo_select_queue = dpa_select_queue,
+#endif
+	.ndo_change_mtu = dpa_change_mtu,
+	.ndo_init = dpa_ndo_init,
+	.ndo_set_features = dpa_set_features,
+	.ndo_fix_features = dpa_macless_fix_features,
+};
+
+static const struct of_device_id dpa_macless_match[] = {
+	{
+		.compatible	= "fsl,dpa-ethernet-macless"
+	},
+	{}
+};
+MODULE_DEVICE_TABLE(of, dpa_macless_match);
+
+static struct platform_driver dpa_macless_driver = {
+	.driver = {
+		.name		= KBUILD_MODNAME "-macless",
+		.of_match_table	= dpa_macless_match,
+		.owner		= THIS_MODULE,
+	},
+	.probe		= dpaa_eth_macless_probe,
+	.remove		= dpa_remove
+};
+
+static const char macless_frame_queues[][25] = {
+	[RX] = "fsl,qman-frame-queues-rx",
+	[TX] = "fsl,qman-frame-queues-tx"
+};
+
+static int __cold dpa_macless_start(struct net_device *net_dev)
+{
+	const struct dpa_priv_s *priv = netdev_priv(net_dev);
+	struct proxy_device *proxy_dev = (struct proxy_device *)priv->peer;
+
+	netif_tx_start_all_queues(net_dev);
+
+	if (proxy_dev)
+		dpa_proxy_start(net_dev);
+
+
+	return 0;
+}
+
+static int __cold dpa_macless_stop(struct net_device *net_dev)
+{
+	const struct dpa_priv_s *priv = netdev_priv(net_dev);
+	struct proxy_device *proxy_dev = (struct proxy_device *)priv->peer;
+
+	netif_tx_stop_all_queues(net_dev);
+
+	if (proxy_dev)
+		dpa_proxy_stop(proxy_dev, net_dev);
+
+	return 0;
+}
+
+static int dpa_macless_set_address(struct net_device *net_dev, void *addr)
+{
+	const struct dpa_priv_s *priv = netdev_priv(net_dev);
+	struct proxy_device *proxy_dev = (struct proxy_device *)priv->peer;
+	int			 _errno;
+
+	_errno = eth_mac_addr(net_dev, addr);
+	if (_errno < 0) {
+		if (netif_msg_drv(priv))
+			netdev_err(net_dev, "eth_mac_addr() = %d\n", _errno);
+		return _errno;
+	}
+
+	if (proxy_dev) {
+		_errno = dpa_proxy_set_mac_address(proxy_dev, net_dev);
+		if (_errno < 0) {
+			if (netif_msg_drv(priv))
+				netdev_err(net_dev, "proxy_set_mac_address() = %d\n",
+						_errno);
+			return _errno;
+		}
+	}
+
+	return 0;
+}
+
+static void __cold dpa_macless_set_rx_mode(struct net_device *net_dev)
+{
+	const struct dpa_priv_s	*priv = netdev_priv(net_dev);
+	struct proxy_device *proxy_dev = (struct proxy_device *)priv->peer;
+
+	if (proxy_dev)
+		dpa_proxy_set_rx_mode(proxy_dev, net_dev);
+}
+
+static netdev_features_t
+dpa_macless_fix_features(struct net_device *dev, netdev_features_t features)
+{
+	netdev_features_t unsupported_features = 0;
+
+	/* In theory we should never be requested to enable features that
+	 * we didn't set in netdev->features and netdev->hw_features at probe
+	 * time, but double check just to be on the safe side.
+	 */
+	unsupported_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
+	/* We don't support enabling Rx csum through ethtool yet */
+	unsupported_features |= NETIF_F_RXCSUM;
+
+	features &= ~unsupported_features;
+
+	return features;
+}
+
+static int dpa_macless_netdev_init(struct device_node *dpa_node,
+				struct net_device *net_dev)
+{
+	struct dpa_priv_s *priv = netdev_priv(net_dev);
+	struct proxy_device *proxy_dev = (struct proxy_device *)priv->peer;
+	struct device *dev = net_dev->dev.parent;
+	const uint8_t *mac_addr;
+
+	net_dev->netdev_ops = &dpa_macless_ops;
+
+	if (proxy_dev) {
+		struct mac_device *mac_dev = proxy_dev->mac_dev;
+		net_dev->mem_start = mac_dev->res->start;
+		net_dev->mem_end = mac_dev->res->end;
+
+		return dpa_netdev_init(net_dev, mac_dev->addr,
+				macless_tx_timeout);
+	} else {
+		/* Get the MAC address from device tree */
+		mac_addr = of_get_mac_address(dpa_node);
+
+		if (mac_addr == NULL) {
+			if (netif_msg_probe(priv))
+				dev_err(dev, "No MAC address found!\n");
+			return -EINVAL;
+		}
+
+		return dpa_netdev_init(net_dev, mac_addr,
+				macless_tx_timeout);
+	}
+}
+
+/* Probing of FQs for MACless ports */
+static int dpa_fq_probe_macless(struct device *dev, struct list_head *list,
+				enum port_type ptype)
+{
+	struct device_node *np = dev->of_node;
+	const struct fqid_cell *fqids;
+	int num_ranges;
+	int i, lenp;
+
+	fqids = of_get_property(np, macless_frame_queues[ptype], &lenp);
+	if (fqids == NULL) {
+		dev_err(dev, "Need FQ definition in dts for MACless devices\n");
+		return -EINVAL;
+	}
+
+	num_ranges = lenp / sizeof(*fqids);
+
+	/* All ranges defined in the device tree are used as Rx/Tx queues */
+	for (i = 0; i < num_ranges; i++) {
+		if (!dpa_fq_alloc(dev, be32_to_cpu(fqids[i].start),
+				  be32_to_cpu(fqids[i].count), list,
+				  ptype == RX ? FQ_TYPE_RX_PCD : FQ_TYPE_TX)) {
+			dev_err(dev, "_dpa_fq_alloc() failed\n");
+			return -ENOMEM;
+		}
+	}
+
+	return 0;
+}
+
+	static struct proxy_device *
+dpa_macless_proxy_probe(struct platform_device *_of_dev)
+{
+	struct device		*dev;
+	const phandle		*proxy_prop;
+	struct proxy_device	*proxy_dev;
+	struct device_node	*proxy_node;
+	struct platform_device  *proxy_pdev;
+	int lenp;
+
+	dev = &_of_dev->dev;
+
+	proxy_prop = of_get_property(dev->of_node, "proxy", &lenp);
+	if (!proxy_prop)
+		return NULL;
+
+	proxy_node = of_find_node_by_phandle(*proxy_prop);
+	if (!proxy_node) {
+		dev_err(dev, "Cannot find proxy node\n");
+		return NULL;
+	}
+
+	proxy_pdev = of_find_device_by_node(proxy_node);
+	if (!proxy_pdev) {
+		of_node_put(proxy_node);
+		dev_err(dev, "Cannot find device represented by proxy node\n");
+		return NULL;
+	}
+
+	proxy_dev = dev_get_drvdata(&proxy_pdev->dev);
+
+	of_node_put(proxy_node);
+
+	return proxy_dev;
+}
+
+static int dpaa_eth_macless_probe(struct platform_device *_of_dev)
+{
+	int err = 0, i, channel;
+	struct device *dev;
+	struct device_node *dpa_node;
+	struct dpa_bp *dpa_bp;
+	size_t count;
+	struct net_device *net_dev = NULL;
+	struct dpa_priv_s *priv = NULL;
+	struct dpa_percpu_priv_s *percpu_priv;
+	static struct proxy_device *proxy_dev;
+	struct task_struct *kth;
+	static u8 macless_idx;
+
+	dev = &_of_dev->dev;
+
+	dpa_node = dev->of_node;
+
+	if (!of_device_is_available(dpa_node))
+		return -ENODEV;
+
+	/* Get the buffer pools assigned to this interface */
+	dpa_bp = dpa_bp_probe(_of_dev, &count);
+	if (IS_ERR(dpa_bp))
+		return PTR_ERR(dpa_bp);
+
+	for (i = 0; i < count; i++)
+		dpa_bp[i].seed_cb = dpa_bp_shared_port_seed;
+
+	proxy_dev = dpa_macless_proxy_probe(_of_dev);
+
+
+	/* Allocate this early, so we can store relevant information in
+	 * the private area (needed by 1588 code in dpa_mac_probe)
+	 */
+	net_dev = alloc_etherdev_mq(sizeof(*priv), DPAA_ETH_TX_QUEUES);
+	if (!net_dev) {
+		dev_err(dev, "alloc_etherdev_mq() failed\n");
+		return -ENOMEM;
+	}
+
+	/* Do this here, so we can be verbose early */
+	SET_NETDEV_DEV(net_dev, dev);
+	dev_set_drvdata(dev, net_dev);
+
+	priv = netdev_priv(net_dev);
+	priv->net_dev = net_dev;
+	sprintf(priv->if_type, "macless%d", macless_idx++);
+
+	priv->msg_enable = netif_msg_init(advanced_debug, -1);
+
+	priv->peer = NULL;
+	priv->mac_dev = NULL;
+	if (proxy_dev) {
+		/* This is a temporary solution for the need of
+		 * having main driver upstreamability: adjust_link
+		 * is a general function that should work for both
+		 * private driver and macless driver with MAC device
+		 * control capabilities even if the last will not be
+		 * upstreamable.
+		 * TODO: find a convenient solution (wrapper over
+		 * main priv structure, etc.)
+		 */
+		priv->mac_dev = proxy_dev->mac_dev;
+
+		/* control over proxy's mac device */
+		priv->peer = (void *)proxy_dev;
+	}
+
+	INIT_LIST_HEAD(&priv->dpa_fq_list);
+
+	err = dpa_fq_probe_macless(dev, &priv->dpa_fq_list, RX);
+	if (!err)
+		err = dpa_fq_probe_macless(dev, &priv->dpa_fq_list,
+					   TX);
+	if (err < 0)
+		goto fq_probe_failed;
+
+	/* bp init */
+	priv->bp_count = count;
+	err = dpa_bp_create(net_dev, dpa_bp, count);
+	if (err < 0)
+		goto bp_create_failed;
+
+	channel = dpa_get_channel();
+
+	if (channel < 0) {
+		err = channel;
+		goto get_channel_failed;
+	}
+
+	priv->channel = (uint16_t)channel;
+
+	/* Start a thread that will walk the cpus with affine portals
+	 * and add this pool channel to each's dequeue mask.
+	 */
+	kth = kthread_run(dpaa_eth_add_channel,
+			  (void *)(unsigned long)priv->channel,
+			  "dpaa_%p:%d", net_dev, priv->channel);
+	if (!kth) {
+		err = -ENOMEM;
+		goto add_channel_failed;
+	}
+
+	dpa_fq_setup(priv, &shared_fq_cbs, NULL);
+
+	/* Add the FQs to the interface, and make them active */
+	/* For MAC-less devices we only get here for RX frame queues
+	 * initialization, which are the TX queues of the other
+	 * partition.
+	 * It is safe to rely on one partition to set the FQ taildrop
+	 * threshold for the TX queues of the other partition
+	 * because the ERN notifications will be received by the
+	 * partition doing qman_enqueue.
+	 */
+	err = dpa_fqs_init(dev,  &priv->dpa_fq_list, true);
+	if (err < 0)
+		goto fq_alloc_failed;
+
+	priv->tx_headroom = DPA_DEFAULT_TX_HEADROOM;
+
+	priv->percpu_priv = devm_alloc_percpu(dev, *priv->percpu_priv);
+
+	if (priv->percpu_priv == NULL) {
+		dev_err(dev, "devm_alloc_percpu() failed\n");
+		err = -ENOMEM;
+		goto alloc_percpu_failed;
+	}
+	for_each_possible_cpu(i) {
+		percpu_priv = per_cpu_ptr(priv->percpu_priv, i);
+		memset(percpu_priv, 0, sizeof(*percpu_priv));
+	}
+
+	err = dpa_macless_netdev_init(dpa_node, net_dev);
+	if (err < 0)
+		goto netdev_init_failed;
+
+	dpaa_eth_sysfs_init(&net_dev->dev);
+
+	pr_info("fsl_dpa_macless: Probed %s interface as %s\n",
+			priv->if_type, net_dev->name);
+
+	return 0;
+
+netdev_init_failed:
+alloc_percpu_failed:
+fq_alloc_failed:
+	if (net_dev)
+		dpa_fq_free(dev, &priv->dpa_fq_list);
+add_channel_failed:
+get_channel_failed:
+	if (net_dev)
+		dpa_bp_free(priv);
+bp_create_failed:
+fq_probe_failed:
+	dev_set_drvdata(dev, NULL);
+	if (net_dev)
+		free_netdev(net_dev);
+
+	return err;
+}
+
+static int __init __cold dpa_macless_load(void)
+{
+	int	 _errno;
+
+	pr_info(DPA_DESCRIPTION "\n");
+
+	/* Initialize dpaa_eth mirror values */
+	dpa_rx_extra_headroom = fm_get_rx_extra_headroom();
+	dpa_max_frm = fm_get_max_frm();
+
+	_errno = platform_driver_register(&dpa_macless_driver);
+	if (unlikely(_errno < 0)) {
+		pr_err(KBUILD_MODNAME
+			": %s:%hu:%s(): platform_driver_register() = %d\n",
+			KBUILD_BASENAME".c", __LINE__, __func__, _errno);
+	}
+
+	pr_debug(KBUILD_MODNAME ": %s:%s() ->\n",
+		KBUILD_BASENAME".c", __func__);
+
+	return _errno;
+}
+module_init(dpa_macless_load);
+
+static void __exit __cold dpa_macless_unload(void)
+{
+	platform_driver_unregister(&dpa_macless_driver);
+
+	pr_debug(KBUILD_MODNAME ": %s:%s() ->\n",
+		KBUILD_BASENAME".c", __func__);
+}
+module_exit(dpa_macless_unload);
-- 
2.12.3




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