net: add Hisilicon Network Subsystem hnae framework support
HNAE (Hisilicon Network Acceleration Engine) is a framework to provide a unified ring buffer interface for Hisilicon Network Acceleration Engines. With the interface, upper layer can work as ethernet driver, ODP driver or other service driver on purpose. Signed-off-by: huangdaode <huangdaode@hisilicon.com> Signed-off-by: Kenneth Lee <liguozhu@huawei.com> Signed-off-by: Yisen Zhuang <Yisen.Zhuang@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
huangdaode
David S. Miller
Родитель
5b904d3940
Коммит
6fe6611ff2
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@ -39,4 +39,11 @@ config HNS_MDIO
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This selects the HNS MDIO support. It is needed by HNS_DSAF to access
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the PHY
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config HNS
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tristate "Hisilicon Network Subsystem Support (Framework)"
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---help---
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This selects the framework support for Hisilicon Network Subsystem. It
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is needed by any driver which provides HNS acceleration engine or make
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use of the engine
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endif # NET_VENDOR_HISILICON
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@ -5,3 +5,4 @@
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obj-$(CONFIG_HIX5HD2_GMAC) += hix5hd2_gmac.o
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obj-$(CONFIG_HIP04_ETH) += hip04_eth.o
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obj-$(CONFIG_HNS_MDIO) += hns_mdio.o
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obj-$(CONFIG_HNS) += hns/
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@ -0,0 +1,5 @@
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#
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# Makefile for the HISILICON network device drivers.
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#
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obj-$(CONFIG_HNS) += hnae.o
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@ -0,0 +1,507 @@
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/*
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* Copyright (c) 2014-2015 Hisilicon Limited.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/dma-mapping.h>
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#include <linux/interrupt.h>
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#include <linux/skbuff.h>
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#include <linux/slab.h>
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#include "hnae.h"
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#define cls_to_ae_dev(dev) container_of(dev, struct hnae_ae_dev, cls_dev)
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static struct class *hnae_class;
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static void
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hnae_list_add(spinlock_t *lock, struct list_head *node, struct list_head *head)
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{
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unsigned long flags;
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spin_lock_irqsave(lock, flags);
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list_add_tail_rcu(node, head);
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spin_unlock_irqrestore(lock, flags);
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}
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static void hnae_list_del(spinlock_t *lock, struct list_head *node)
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{
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unsigned long flags;
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spin_lock_irqsave(lock, flags);
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list_del_rcu(node);
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spin_unlock_irqrestore(lock, flags);
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}
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static int hnae_alloc_buffer(struct hnae_ring *ring, struct hnae_desc_cb *cb)
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{
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unsigned int order = hnae_page_order(ring);
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struct page *p = dev_alloc_pages(order);
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if (!p)
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return -ENOMEM;
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cb->priv = p;
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cb->page_offset = 0;
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cb->reuse_flag = 0;
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cb->buf = page_address(p);
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cb->length = hnae_page_size(ring);
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cb->type = DESC_TYPE_PAGE;
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return 0;
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}
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static void hnae_free_buffer(struct hnae_ring *ring, struct hnae_desc_cb *cb)
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{
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if (cb->type == DESC_TYPE_SKB)
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dev_kfree_skb_any((struct sk_buff *)cb->priv);
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else if (unlikely(is_rx_ring(ring)))
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put_page((struct page *)cb->priv);
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memset(cb, 0, sizeof(*cb));
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}
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static int hnae_map_buffer(struct hnae_ring *ring, struct hnae_desc_cb *cb)
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{
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cb->dma = dma_map_page(ring_to_dev(ring), cb->priv, 0,
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cb->length, ring_to_dma_dir(ring));
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if (dma_mapping_error(ring_to_dev(ring), cb->dma))
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return -EIO;
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return 0;
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}
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static void hnae_unmap_buffer(struct hnae_ring *ring, struct hnae_desc_cb *cb)
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{
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if (cb->type == DESC_TYPE_SKB)
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dma_unmap_single(ring_to_dev(ring), cb->dma, cb->length,
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ring_to_dma_dir(ring));
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else
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dma_unmap_page(ring_to_dev(ring), cb->dma, cb->length,
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ring_to_dma_dir(ring));
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}
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static struct hnae_buf_ops hnae_bops = {
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.alloc_buffer = hnae_alloc_buffer,
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.free_buffer = hnae_free_buffer,
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.map_buffer = hnae_map_buffer,
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.unmap_buffer = hnae_unmap_buffer,
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};
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static int __ae_match(struct device *dev, const void *data)
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{
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struct hnae_ae_dev *hdev = cls_to_ae_dev(dev);
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const char *ae_id = data;
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if (!strncmp(ae_id, hdev->name, AE_NAME_SIZE))
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return 1;
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return 0;
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}
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static struct hnae_ae_dev *find_ae(const char *ae_id)
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{
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struct device *dev;
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WARN_ON(!ae_id);
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dev = class_find_device(hnae_class, NULL, ae_id, __ae_match);
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return dev ? cls_to_ae_dev(dev) : NULL;
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}
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static void hnae_free_buffers(struct hnae_ring *ring)
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{
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int i;
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for (i = 0; i < ring->desc_num; i++)
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hnae_free_buffer_detach(ring, i);
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}
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/* Allocate memory for raw pkg, and map with dma */
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static int hnae_alloc_buffers(struct hnae_ring *ring)
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{
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int i, j, ret;
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for (i = 0; i < ring->desc_num; i++) {
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ret = hnae_alloc_buffer_attach(ring, i);
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if (ret)
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goto out_buffer_fail;
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}
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return 0;
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out_buffer_fail:
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for (j = i - 1; j >= 0; j--)
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hnae_free_buffer_detach(ring, j);
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return ret;
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}
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/* free desc along with its attached buffer */
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static void hnae_free_desc(struct hnae_ring *ring)
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{
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hnae_free_buffers(ring);
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dma_unmap_single(ring_to_dev(ring), ring->desc_dma_addr,
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ring->desc_num * sizeof(ring->desc[0]),
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ring_to_dma_dir(ring));
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ring->desc_dma_addr = 0;
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kfree(ring->desc);
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ring->desc = NULL;
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}
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/* alloc desc, without buffer attached */
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static int hnae_alloc_desc(struct hnae_ring *ring)
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{
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int size = ring->desc_num * sizeof(ring->desc[0]);
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ring->desc = kzalloc(size, GFP_KERNEL);
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if (!ring->desc)
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return -ENOMEM;
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ring->desc_dma_addr = dma_map_single(ring_to_dev(ring),
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ring->desc, size, ring_to_dma_dir(ring));
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if (dma_mapping_error(ring_to_dev(ring), ring->desc_dma_addr)) {
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ring->desc_dma_addr = 0;
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kfree(ring->desc);
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ring->desc = NULL;
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return -ENOMEM;
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}
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return 0;
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}
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/* fini ring, also free the buffer for the ring */
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static void hnae_fini_ring(struct hnae_ring *ring)
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{
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hnae_free_desc(ring);
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kfree(ring->desc_cb);
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ring->desc_cb = NULL;
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ring->next_to_clean = 0;
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ring->next_to_use = 0;
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}
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/* init ring, and with buffer for rx ring */
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static int
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hnae_init_ring(struct hnae_queue *q, struct hnae_ring *ring, int flags)
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{
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int ret;
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if (ring->desc_num <= 0 || ring->buf_size <= 0)
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return -EINVAL;
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ring->q = q;
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ring->flags = flags;
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assert(!ring->desc && !ring->desc_cb && !ring->desc_dma_addr);
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/* not matter for tx or rx ring, the ntc and ntc start from 0 */
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assert(ring->next_to_use == 0);
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assert(ring->next_to_clean == 0);
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ring->desc_cb = kcalloc(ring->desc_num, sizeof(ring->desc_cb[0]),
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GFP_KERNEL);
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if (!ring->desc_cb) {
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ret = -ENOMEM;
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goto out;
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}
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ret = hnae_alloc_desc(ring);
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if (ret)
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goto out_with_desc_cb;
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if (is_rx_ring(ring)) {
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ret = hnae_alloc_buffers(ring);
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if (ret)
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goto out_with_desc;
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}
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return 0;
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out_with_desc:
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hnae_free_desc(ring);
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out_with_desc_cb:
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kfree(ring->desc_cb);
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ring->desc_cb = NULL;
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out:
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return ret;
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}
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static int hnae_init_queue(struct hnae_handle *h, struct hnae_queue *q,
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struct hnae_ae_dev *dev)
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{
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int ret;
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q->dev = dev;
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q->handle = h;
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ret = hnae_init_ring(q, &q->tx_ring, q->tx_ring.flags | RINGF_DIR);
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if (ret)
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goto out;
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ret = hnae_init_ring(q, &q->rx_ring, q->rx_ring.flags & ~RINGF_DIR);
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if (ret)
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goto out_with_tx_ring;
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if (dev->ops->init_queue)
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dev->ops->init_queue(q);
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return 0;
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out_with_tx_ring:
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hnae_fini_ring(&q->tx_ring);
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out:
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return ret;
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}
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static void hnae_fini_queue(struct hnae_queue *q)
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{
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if (q->dev->ops->fini_queue)
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q->dev->ops->fini_queue(q);
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hnae_fini_ring(&q->tx_ring);
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hnae_fini_ring(&q->rx_ring);
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}
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/**
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* ae_chain - define ae chain head
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*/
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static RAW_NOTIFIER_HEAD(ae_chain);
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int hnae_register_notifier(struct notifier_block *nb)
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{
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return raw_notifier_chain_register(&ae_chain, nb);
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}
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EXPORT_SYMBOL(hnae_register_notifier);
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void hnae_unregister_notifier(struct notifier_block *nb)
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{
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if (raw_notifier_chain_unregister(&ae_chain, nb))
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dev_err(NULL, "notifier chain unregister fail\n");
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}
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EXPORT_SYMBOL(hnae_unregister_notifier);
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int hnae_reinit_handle(struct hnae_handle *handle)
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{
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int i, j;
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int ret;
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for (i = 0; i < handle->q_num; i++) /* free ring*/
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hnae_fini_queue(handle->qs[i]);
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if (handle->dev->ops->reset)
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handle->dev->ops->reset(handle);
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for (i = 0; i < handle->q_num; i++) {/* reinit ring*/
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ret = hnae_init_queue(handle, handle->qs[i], handle->dev);
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if (ret)
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goto out_when_init_queue;
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}
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return 0;
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out_when_init_queue:
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for (j = i - 1; j >= 0; j--)
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hnae_fini_queue(handle->qs[j]);
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return ret;
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}
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EXPORT_SYMBOL(hnae_reinit_handle);
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/* hnae_get_handle - get a handle from the AE
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* @owner_dev: the dev use this handle
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* @ae_id: the id of the ae to be used
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* @ae_opts: the options set for the handle
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* @bops: the callbacks for buffer management
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*
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* return handle ptr or ERR_PTR
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*/
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struct hnae_handle *hnae_get_handle(struct device *owner_dev,
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const char *ae_id, u32 port_id,
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struct hnae_buf_ops *bops)
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{
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struct hnae_ae_dev *dev;
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struct hnae_handle *handle;
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int i, j;
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int ret;
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dev = find_ae(ae_id);
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if (!dev)
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return ERR_PTR(-ENODEV);
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handle = dev->ops->get_handle(dev, port_id);
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if (IS_ERR(handle))
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return handle;
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handle->dev = dev;
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handle->owner_dev = owner_dev;
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handle->bops = bops ? bops : &hnae_bops;
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handle->eport_id = port_id;
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for (i = 0; i < handle->q_num; i++) {
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ret = hnae_init_queue(handle, handle->qs[i], dev);
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if (ret)
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goto out_when_init_queue;
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}
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__module_get(dev->owner);
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hnae_list_add(&dev->lock, &handle->node, &dev->handle_list);
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return handle;
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out_when_init_queue:
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for (j = i - 1; j >= 0; j--)
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hnae_fini_queue(handle->qs[j]);
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return ERR_PTR(-ENOMEM);
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}
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EXPORT_SYMBOL(hnae_get_handle);
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void hnae_put_handle(struct hnae_handle *h)
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{
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struct hnae_ae_dev *dev = h->dev;
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int i;
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for (i = 0; i < h->q_num; i++)
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hnae_fini_queue(h->qs[i]);
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if (h->dev->ops->reset)
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h->dev->ops->reset(h);
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hnae_list_del(&dev->lock, &h->node);
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if (dev->ops->put_handle)
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dev->ops->put_handle(h);
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module_put(dev->owner);
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}
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EXPORT_SYMBOL(hnae_put_handle);
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static void hnae_release(struct device *dev)
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{
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}
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/**
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* hnae_ae_register - register a AE engine to hnae framework
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* @hdev: the hnae ae engine device
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* @owner: the module who provides this dev
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* NOTE: the duplicated name will not be checked
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*/
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int hnae_ae_register(struct hnae_ae_dev *hdev, struct module *owner)
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{
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static atomic_t id = ATOMIC_INIT(-1);
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int ret;
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if (!hdev->dev)
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return -ENODEV;
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|
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if (!hdev->ops || !hdev->ops->get_handle ||
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!hdev->ops->toggle_ring_irq ||
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!hdev->ops->toggle_queue_status ||
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!hdev->ops->get_status || !hdev->ops->adjust_link)
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return -EINVAL;
|
||||
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hdev->owner = owner;
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hdev->id = (int)atomic_inc_return(&id);
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hdev->cls_dev.parent = hdev->dev;
|
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hdev->cls_dev.class = hnae_class;
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hdev->cls_dev.release = hnae_release;
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(void)dev_set_name(&hdev->cls_dev, "hnae%d", hdev->id);
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ret = device_register(&hdev->cls_dev);
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if (ret)
|
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return ret;
|
||||
|
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__module_get(THIS_MODULE);
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||||
|
||||
INIT_LIST_HEAD(&hdev->handle_list);
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||||
spin_lock_init(&hdev->lock);
|
||||
|
||||
ret = raw_notifier_call_chain(&ae_chain, HNAE_AE_REGISTER, NULL);
|
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if (ret)
|
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dev_dbg(hdev->dev,
|
||||
"has not notifier for AE: %s\n", hdev->name);
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL(hnae_ae_register);
|
||||
|
||||
/**
|
||||
* hnae_ae_unregister - unregisters a HNAE AE engine
|
||||
* @cdev: the device to unregister
|
||||
*/
|
||||
void hnae_ae_unregister(struct hnae_ae_dev *hdev)
|
||||
{
|
||||
device_unregister(&hdev->cls_dev);
|
||||
module_put(THIS_MODULE);
|
||||
}
|
||||
EXPORT_SYMBOL(hnae_ae_unregister);
|
||||
|
||||
static ssize_t handles_show(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
ssize_t s = 0;
|
||||
struct hnae_ae_dev *hdev = cls_to_ae_dev(dev);
|
||||
struct hnae_handle *h;
|
||||
int i = 0, j;
|
||||
|
||||
list_for_each_entry_rcu(h, &hdev->handle_list, node) {
|
||||
s += sprintf(buf + s, "handle %d (eport_id=%u from %s):\n",
|
||||
i++, h->eport_id, h->dev->name);
|
||||
for (j = 0; j < h->q_num; j++) {
|
||||
s += sprintf(buf + s, "\tqueue[%d] on 0x%llx\n",
|
||||
j, (u64)h->qs[i]->io_base);
|
||||
#define HANDEL_TX_MSG "\t\ttx_ring on 0x%llx:%u,%u,%u,%u,%u,%llu,%llu\n"
|
||||
s += sprintf(buf + s,
|
||||
HANDEL_TX_MSG,
|
||||
(u64)h->qs[i]->tx_ring.io_base,
|
||||
h->qs[i]->tx_ring.buf_size,
|
||||
h->qs[i]->tx_ring.desc_num,
|
||||
h->qs[i]->tx_ring.max_desc_num_per_pkt,
|
||||
h->qs[i]->tx_ring.max_raw_data_sz_per_desc,
|
||||
h->qs[i]->tx_ring.max_pkt_size,
|
||||
h->qs[i]->tx_ring.stats.sw_err_cnt,
|
||||
h->qs[i]->tx_ring.stats.io_err_cnt);
|
||||
s += sprintf(buf + s,
|
||||
"\t\trx_ring on 0x%llx:%u,%u,%llu,%llu,%llu\n",
|
||||
(u64)h->qs[i]->rx_ring.io_base,
|
||||
h->qs[i]->rx_ring.buf_size,
|
||||
h->qs[i]->rx_ring.desc_num,
|
||||
h->qs[i]->rx_ring.stats.sw_err_cnt,
|
||||
h->qs[i]->rx_ring.stats.io_err_cnt,
|
||||
h->qs[i]->rx_ring.stats.seg_pkt_cnt);
|
||||
}
|
||||
}
|
||||
|
||||
return s;
|
||||
}
|
||||
|
||||
static DEVICE_ATTR_RO(handles);
|
||||
static struct attribute *hnae_class_attrs[] = {
|
||||
&dev_attr_handles.attr,
|
||||
NULL,
|
||||
};
|
||||
ATTRIBUTE_GROUPS(hnae_class);
|
||||
|
||||
static int __init hnae_init(void)
|
||||
{
|
||||
hnae_class = class_create(THIS_MODULE, "hnae");
|
||||
if (IS_ERR(hnae_class))
|
||||
return PTR_ERR(hnae_class);
|
||||
|
||||
hnae_class->dev_groups = hnae_class_groups;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void __exit hnae_exit(void)
|
||||
{
|
||||
class_destroy(hnae_class);
|
||||
}
|
||||
|
||||
subsys_initcall(hnae_init);
|
||||
module_exit(hnae_exit);
|
||||
|
||||
MODULE_AUTHOR("Hisilicon, Inc.");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_DESCRIPTION("Hisilicon Network Acceleration Engine Framework");
|
||||
|
||||
/* vi: set tw=78 noet: */
|
||||
|
|
@ -0,0 +1,583 @@
|
|||
/*
|
||||
* Copyright (c) 2014-2015 Hisilicon Limited.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*/
|
||||
|
||||
#ifndef __HNAE_H
|
||||
#define __HNAE_H
|
||||
|
||||
/* Names used in this framework:
|
||||
* ae handle (handle):
|
||||
* a set of queues provided by AE
|
||||
* ring buffer queue (rbq):
|
||||
* the channel between upper layer and the AE, can do tx and rx
|
||||
* ring:
|
||||
* a tx or rx channel within a rbq
|
||||
* ring description (desc):
|
||||
* an element in the ring with packet information
|
||||
* buffer:
|
||||
* a memory region referred by desc with the full packet payload
|
||||
*
|
||||
* "num" means a static number set as a parameter, "count" mean a dynamic
|
||||
* number set while running
|
||||
* "cb" means control block
|
||||
*/
|
||||
|
||||
#include <linux/delay.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/netdevice.h>
|
||||
#include <linux/notifier.h>
|
||||
#include <linux/types.h>
|
||||
|
||||
#define HNAE_DRIVER_VERSION "1.3.0"
|
||||
#define HNAE_DRIVER_NAME "hns"
|
||||
#define HNAE_COPYRIGHT "Copyright(c) 2015 Huawei Corporation."
|
||||
#define HNAE_DRIVER_STRING "Hisilicon Network Subsystem Driver"
|
||||
#define HNAE_DEFAULT_DEVICE_DESCR "Hisilicon Network Subsystem"
|
||||
|
||||
#ifdef DEBUG
|
||||
|
||||
#ifndef assert
|
||||
#define assert(expr) \
|
||||
do { \
|
||||
if (!(expr)) { \
|
||||
pr_err("Assertion failed! %s, %s, %s, line %d\n", \
|
||||
#expr, __FILE__, __func__, __LINE__); \
|
||||
} \
|
||||
} while (0)
|
||||
#endif
|
||||
|
||||
#else
|
||||
|
||||
#ifndef assert
|
||||
#define assert(expr)
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
||||
#define AE_VERSION_1 ('6' << 16 | '6' << 8 | '0')
|
||||
#define AE_VERSION_2 ('1' << 24 | '6' << 16 | '1' << 8 | '0')
|
||||
#define AE_NAME_SIZE 16
|
||||
|
||||
/* some said the RX and TX RCB format should not be the same in the future. But
|
||||
* it is the same now...
|
||||
*/
|
||||
#define RCB_REG_BASEADDR_L 0x00 /* P660 support only 32bit accessing */
|
||||
#define RCB_REG_BASEADDR_H 0x04
|
||||
#define RCB_REG_BD_NUM 0x08
|
||||
#define RCB_REG_BD_LEN 0x0C
|
||||
#define RCB_REG_PKTLINE 0x10
|
||||
#define RCB_REG_TAIL 0x18
|
||||
#define RCB_REG_HEAD 0x1C
|
||||
#define RCB_REG_FBDNUM 0x20
|
||||
#define RCB_REG_OFFSET 0x24 /* pkt num to be handled */
|
||||
#define RCB_REG_PKTNUM_RECORD 0x2C /* total pkt received */
|
||||
|
||||
#define HNS_RX_HEAD_SIZE 256
|
||||
|
||||
#define HNAE_AE_REGISTER 0x1
|
||||
|
||||
#define RCB_RING_NAME_LEN 16
|
||||
|
||||
enum hnae_led_state {
|
||||
HNAE_LED_INACTIVE,
|
||||
HNAE_LED_ACTIVE,
|
||||
HNAE_LED_ON,
|
||||
HNAE_LED_OFF
|
||||
};
|
||||
|
||||
#define HNS_RX_FLAG_VLAN_PRESENT 0x1
|
||||
#define HNS_RX_FLAG_L3ID_IPV4 0x0
|
||||
#define HNS_RX_FLAG_L3ID_IPV6 0x1
|
||||
#define HNS_RX_FLAG_L4ID_UDP 0x0
|
||||
#define HNS_RX_FLAG_L4ID_TCP 0x1
|
||||
|
||||
#define HNS_TXD_ASID_S 0
|
||||
#define HNS_TXD_ASID_M (0xff << HNS_TXD_ASID_S)
|
||||
#define HNS_TXD_BUFNUM_S 8
|
||||
#define HNS_TXD_BUFNUM_M (0x3 << HNS_TXD_BUFNUM_S)
|
||||
#define HNS_TXD_PORTID_S 10
|
||||
#define HNS_TXD_PORTID_M (0x7 << HNS_TXD_PORTID_S)
|
||||
|
||||
#define HNS_TXD_RA_B 8
|
||||
#define HNS_TXD_RI_B 9
|
||||
#define HNS_TXD_L4CS_B 10
|
||||
#define HNS_TXD_L3CS_B 11
|
||||
#define HNS_TXD_FE_B 12
|
||||
#define HNS_TXD_VLD_B 13
|
||||
#define HNS_TXD_IPOFFSET_S 14
|
||||
#define HNS_TXD_IPOFFSET_M (0xff << HNS_TXD_IPOFFSET_S)
|
||||
|
||||
#define HNS_RXD_IPOFFSET_S 0
|
||||
#define HNS_RXD_IPOFFSET_M (0xff << HNS_TXD_IPOFFSET_S)
|
||||
#define HNS_RXD_BUFNUM_S 8
|
||||
#define HNS_RXD_BUFNUM_M (0x3 << HNS_RXD_BUFNUM_S)
|
||||
#define HNS_RXD_PORTID_S 10
|
||||
#define HNS_RXD_PORTID_M (0x7 << HNS_RXD_PORTID_S)
|
||||
#define HNS_RXD_DMAC_S 13
|
||||
#define HNS_RXD_DMAC_M (0x3 << HNS_RXD_DMAC_S)
|
||||
#define HNS_RXD_VLAN_S 15
|
||||
#define HNS_RXD_VLAN_M (0x3 << HNS_RXD_VLAN_S)
|
||||
#define HNS_RXD_L3ID_S 17
|
||||
#define HNS_RXD_L3ID_M (0xf << HNS_RXD_L3ID_S)
|
||||
#define HNS_RXD_L4ID_S 21
|
||||
#define HNS_RXD_L4ID_M (0xf << HNS_RXD_L4ID_S)
|
||||
#define HNS_RXD_FE_B 25
|
||||
#define HNS_RXD_FRAG_B 26
|
||||
#define HNS_RXD_VLD_B 27
|
||||
#define HNS_RXD_L2E_B 28
|
||||
#define HNS_RXD_L3E_B 29
|
||||
#define HNS_RXD_L4E_B 30
|
||||
#define HNS_RXD_DROP_B 31
|
||||
|
||||
#define HNS_RXD_VLANID_S 8
|
||||
#define HNS_RXD_VLANID_M (0xfff << HNS_RXD_VLANID_S)
|
||||
#define HNS_RXD_CFI_B 20
|
||||
#define HNS_RXD_PRI_S 21
|
||||
#define HNS_RXD_PRI_M (0x7 << HNS_RXD_PRI_S)
|
||||
#define HNS_RXD_ASID_S 24
|
||||
#define HNS_RXD_ASID_M (0xff << HNS_RXD_ASID_S)
|
||||
|
||||
/* hardware spec ring buffer format */
|
||||
struct __packed hnae_desc {
|
||||
__le64 addr;
|
||||
union {
|
||||
struct {
|
||||
__le16 asid_bufnum_pid;
|
||||
__le16 send_size;
|
||||
__le32 flag_ipoffset;
|
||||
__le32 reserved_3[4];
|
||||
} tx;
|
||||
|
||||
struct {
|
||||
__le32 ipoff_bnum_pid_flag;
|
||||
__le16 pkt_len;
|
||||
__le16 size;
|
||||
__le32 vlan_pri_asid;
|
||||
__le32 reserved_2[3];
|
||||
} rx;
|
||||
};
|
||||
};
|
||||
|
||||
struct hnae_desc_cb {
|
||||
dma_addr_t dma; /* dma address of this desc */
|
||||
void *buf; /* cpu addr for a desc */
|
||||
|
||||
/* priv data for the desc, e.g. skb when use with ip stack*/
|
||||
void *priv;
|
||||
u16 page_offset;
|
||||
u16 reuse_flag;
|
||||
|
||||
u16 length; /* length of the buffer */
|
||||
|
||||
/* desc type, used by the ring user to mark the type of the priv data */
|
||||
u16 type;
|
||||
};
|
||||
|
||||
#define setflags(flags, bits) ((flags) |= (bits))
|
||||
#define unsetflags(flags, bits) ((flags) &= ~(bits))
|
||||
|
||||
/* hnae_ring->flags fields */
|
||||
#define RINGF_DIR 0x1 /* TX or RX ring, set if TX */
|
||||
#define is_tx_ring(ring) ((ring)->flags & RINGF_DIR)
|
||||
#define is_rx_ring(ring) (!is_tx_ring(ring))
|
||||
#define ring_to_dma_dir(ring) (is_tx_ring(ring) ? \
|
||||
DMA_TO_DEVICE : DMA_FROM_DEVICE)
|
||||
|
||||
struct ring_stats {
|
||||
u64 io_err_cnt;
|
||||
u64 sw_err_cnt;
|
||||
u64 seg_pkt_cnt;
|
||||
union {
|
||||
struct {
|
||||
u64 tx_pkts;
|
||||
u64 tx_bytes;
|
||||
u64 tx_err_cnt;
|
||||
u64 restart_queue;
|
||||
u64 tx_busy;
|
||||
};
|
||||
struct {
|
||||
u64 rx_pkts;
|
||||
u64 rx_bytes;
|
||||
u64 rx_err_cnt;
|
||||
u64 reuse_pg_cnt;
|
||||
u64 err_pkt_len;
|
||||
u64 non_vld_descs;
|
||||
u64 err_bd_num;
|
||||
u64 l2_err;
|
||||
u64 l3l4_csum_err;
|
||||
};
|
||||
};
|
||||
};
|
||||
|
||||
struct hnae_queue;
|
||||
|
||||
struct hnae_ring {
|
||||
u8 __iomem *io_base; /* base io address for the ring */
|
||||
struct hnae_desc *desc; /* dma map address space */
|
||||
struct hnae_desc_cb *desc_cb;
|
||||
struct hnae_queue *q;
|
||||
int irq;
|
||||
char ring_name[RCB_RING_NAME_LEN];
|
||||
|
||||
/* statistic */
|
||||
struct ring_stats stats;
|
||||
|
||||
dma_addr_t desc_dma_addr;
|
||||
u32 buf_size; /* size for hnae_desc->addr, preset by AE */
|
||||
u16 desc_num; /* total number of desc */
|
||||
u16 max_desc_num_per_pkt;
|
||||
u16 max_raw_data_sz_per_desc;
|
||||
u16 max_pkt_size;
|
||||
int next_to_use; /* idx of next spare desc */
|
||||
|
||||
/* idx of lastest sent desc, the ring is empty when equal to
|
||||
* next_to_use
|
||||
*/
|
||||
int next_to_clean;
|
||||
|
||||
int flags; /* ring attribute */
|
||||
int irq_init_flag;
|
||||
};
|
||||
|
||||
#define ring_ptr_move_fw(ring, p) \
|
||||
((ring)->p = ((ring)->p + 1) % (ring)->desc_num)
|
||||
#define ring_ptr_move_bw(ring, p) \
|
||||
((ring)->p = ((ring)->p - 1 + (ring)->desc_num) % (ring)->desc_num)
|
||||
|
||||
enum hns_desc_type {
|
||||
DESC_TYPE_SKB,
|
||||
DESC_TYPE_PAGE,
|
||||
};
|
||||
|
||||
#define assert_is_ring_idx(ring, idx) \
|
||||
assert((idx) >= 0 && (idx) < (ring)->desc_num)
|
||||
|
||||
/* the distance between [begin, end) in a ring buffer
|
||||
* note: there is a unuse slot between the begin and the end
|
||||
*/
|
||||
static inline int ring_dist(struct hnae_ring *ring, int begin, int end)
|
||||
{
|
||||
assert_is_ring_idx(ring, begin);
|
||||
assert_is_ring_idx(ring, end);
|
||||
|
||||
return (end - begin + ring->desc_num) % ring->desc_num;
|
||||
}
|
||||
|
||||
static inline int ring_space(struct hnae_ring *ring)
|
||||
{
|
||||
return ring->desc_num -
|
||||
ring_dist(ring, ring->next_to_clean, ring->next_to_use) - 1;
|
||||
}
|
||||
|
||||
static inline int is_ring_empty(struct hnae_ring *ring)
|
||||
{
|
||||
assert_is_ring_idx(ring, ring->next_to_use);
|
||||
assert_is_ring_idx(ring, ring->next_to_clean);
|
||||
|
||||
return ring->next_to_use == ring->next_to_clean;
|
||||
}
|
||||
|
||||
#define hnae_buf_size(_ring) ((_ring)->buf_size)
|
||||
#define hnae_page_order(_ring) (get_order(hnae_buf_size(_ring)))
|
||||
#define hnae_page_size(_ring) (PAGE_SIZE << hnae_page_order(_ring))
|
||||
|
||||
struct hnae_handle;
|
||||
|
||||
/* allocate and dma map space for hnae desc */
|
||||
struct hnae_buf_ops {
|
||||
int (*alloc_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb);
|
||||
void (*free_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb);
|
||||
int (*map_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb);
|
||||
void (*unmap_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb);
|
||||
};
|
||||
|
||||
struct hnae_queue {
|
||||
void __iomem *io_base;
|
||||
phys_addr_t phy_base;
|
||||
struct hnae_ae_dev *dev; /* the device who use this queue */
|
||||
struct hnae_ring rx_ring, tx_ring;
|
||||
struct hnae_handle *handle;
|
||||
};
|
||||
|
||||
/*hnae loop mode*/
|
||||
enum hnae_loop {
|
||||
MAC_INTERNALLOOP_MAC = 0,
|
||||
MAC_INTERNALLOOP_SERDES,
|
||||
MAC_INTERNALLOOP_PHY,
|
||||
MAC_LOOP_NONE,
|
||||
};
|
||||
|
||||
/*hnae port type*/
|
||||
enum hnae_port_type {
|
||||
HNAE_PORT_SERVICE = 0,
|
||||
HNAE_PORT_DEBUG
|
||||
};
|
||||
|
||||
/* This struct defines the operation on the handle.
|
||||
*
|
||||
* get_handle(): (mandatory)
|
||||
* Get a handle from AE according to its name and options.
|
||||
* the AE driver should manage the space used by handle and its queues while
|
||||
* the HNAE framework will allocate desc and desc_cb for all rings in the
|
||||
* queues.
|
||||
* put_handle():
|
||||
* Release the handle.
|
||||
* start():
|
||||
* Enable the hardware, include all queues
|
||||
* stop():
|
||||
* Disable the hardware
|
||||
* set_opts(): (mandatory)
|
||||
* Set options to the AE
|
||||
* get_opts(): (mandatory)
|
||||
* Get options from the AE
|
||||
* get_status():
|
||||
* Get the carrier state of the back channel of the handle, 1 for ok, 0 for
|
||||
* non-ok
|
||||
* toggle_ring_irq(): (mandatory)
|
||||
* Set the ring irq to be enabled(0) or disable(1)
|
||||
* toggle_queue_status(): (mandatory)
|
||||
* Set the queue to be enabled(1) or disable(0), this will not change the
|
||||
* ring irq state
|
||||
* adjust_link()
|
||||
* adjust link status
|
||||
* set_loopback()
|
||||
* set loopback
|
||||
* get_ring_bdnum_limit()
|
||||
* get ring bd number limit
|
||||
* get_pauseparam()
|
||||
* get tx and rx of pause frame use
|
||||
* set_autoneg()
|
||||
* set auto autonegotiation of pause frame use
|
||||
* get_autoneg()
|
||||
* get auto autonegotiation of pause frame use
|
||||
* set_pauseparam()
|
||||
* set tx and rx of pause frame use
|
||||
* get_coalesce_usecs()
|
||||
* get usecs to delay a TX interrupt after a packet is sent
|
||||
* get_rx_max_coalesced_frames()
|
||||
* get Maximum number of packets to be sent before a TX interrupt.
|
||||
* set_coalesce_usecs()
|
||||
* set usecs to delay a TX interrupt after a packet is sent
|
||||
* set_coalesce_frames()
|
||||
* set Maximum number of packets to be sent before a TX interrupt.
|
||||
* get_ringnum()
|
||||
* get RX/TX ring number
|
||||
* get_max_ringnum()
|
||||
* get RX/TX ring maximum number
|
||||
* get_mac_addr()
|
||||
* get mac address
|
||||
* set_mac_addr()
|
||||
* set mac address
|
||||
* set_mc_addr()
|
||||
* set multicast mode
|
||||
* set_mtu()
|
||||
* set mtu
|
||||
* update_stats()
|
||||
* update Old network device statistics
|
||||
* get_ethtool_stats()
|
||||
* get ethtool network device statistics
|
||||
* get_strings()
|
||||
* get a set of strings that describe the requested objects
|
||||
* get_sset_count()
|
||||
* get number of strings that @get_strings will write
|
||||
* update_led_status()
|
||||
* update the led status
|
||||
* set_led_id()
|
||||
* set led id
|
||||
* get_regs()
|
||||
* get regs dump
|
||||
* get_regs_len()
|
||||
* get the len of the regs dump
|
||||
*/
|
||||
struct hnae_ae_ops {
|
||||
struct hnae_handle *(*get_handle)(struct hnae_ae_dev *dev,
|
||||
u32 port_id);
|
||||
void (*put_handle)(struct hnae_handle *handle);
|
||||
void (*init_queue)(struct hnae_queue *q);
|
||||
void (*fini_queue)(struct hnae_queue *q);
|
||||
int (*start)(struct hnae_handle *handle);
|
||||
void (*stop)(struct hnae_handle *handle);
|
||||
void (*reset)(struct hnae_handle *handle);
|
||||
int (*set_opts)(struct hnae_handle *handle, int type, void *opts);
|
||||
int (*get_opts)(struct hnae_handle *handle, int type, void **opts);
|
||||
int (*get_status)(struct hnae_handle *handle);
|
||||
int (*get_info)(struct hnae_handle *handle,
|
||||
u8 *auto_neg, u16 *speed, u8 *duplex);
|
||||
void (*toggle_ring_irq)(struct hnae_ring *ring, u32 val);
|
||||
void (*toggle_queue_status)(struct hnae_queue *queue, u32 val);
|
||||
void (*adjust_link)(struct hnae_handle *handle, int speed, int duplex);
|
||||
int (*set_loopback)(struct hnae_handle *handle,
|
||||
enum hnae_loop loop_mode, int en);
|
||||
void (*get_ring_bdnum_limit)(struct hnae_queue *queue,
|
||||
u32 *uplimit);
|
||||
void (*get_pauseparam)(struct hnae_handle *handle,
|
||||
u32 *auto_neg, u32 *rx_en, u32 *tx_en);
|
||||
int (*set_autoneg)(struct hnae_handle *handle, u8 enable);
|
||||
int (*get_autoneg)(struct hnae_handle *handle);
|
||||
int (*set_pauseparam)(struct hnae_handle *handle,
|
||||
u32 auto_neg, u32 rx_en, u32 tx_en);
|
||||
void (*get_coalesce_usecs)(struct hnae_handle *handle,
|
||||
u32 *tx_usecs, u32 *rx_usecs);
|
||||
void (*get_rx_max_coalesced_frames)(struct hnae_handle *handle,
|
||||
u32 *tx_frames, u32 *rx_frames);
|
||||
void (*set_coalesce_usecs)(struct hnae_handle *handle, u32 timeout);
|
||||
int (*set_coalesce_frames)(struct hnae_handle *handle,
|
||||
u32 coalesce_frames);
|
||||
int (*get_mac_addr)(struct hnae_handle *handle, void **p);
|
||||
int (*set_mac_addr)(struct hnae_handle *handle, void *p);
|
||||
int (*set_mc_addr)(struct hnae_handle *handle, void *addr);
|
||||
int (*set_mtu)(struct hnae_handle *handle, int new_mtu);
|
||||
void (*update_stats)(struct hnae_handle *handle,
|
||||
struct net_device_stats *net_stats);
|
||||
void (*get_stats)(struct hnae_handle *handle, u64 *data);
|
||||
void (*get_strings)(struct hnae_handle *handle,
|
||||
u32 stringset, u8 *data);
|
||||
int (*get_sset_count)(struct hnae_handle *handle, int stringset);
|
||||
void (*update_led_status)(struct hnae_handle *handle);
|
||||
int (*set_led_id)(struct hnae_handle *handle,
|
||||
enum hnae_led_state status);
|
||||
void (*get_regs)(struct hnae_handle *handle, void *data);
|
||||
int (*get_regs_len)(struct hnae_handle *handle);
|
||||
};
|
||||
|
||||
struct hnae_ae_dev {
|
||||
struct device cls_dev; /* the class dev */
|
||||
struct device *dev; /* the presented dev */
|
||||
struct hnae_ae_ops *ops;
|
||||
struct list_head node;
|
||||
struct module *owner; /* the module who provides this dev */
|
||||
int id;
|
||||
char name[AE_NAME_SIZE];
|
||||
struct list_head handle_list;
|
||||
spinlock_t lock; /* lock to protect the handle_list */
|
||||
};
|
||||
|
||||
struct hnae_handle {
|
||||
struct device *owner_dev; /* the device which make use of this handle */
|
||||
struct hnae_ae_dev *dev; /* the device who provides this handle */
|
||||
struct device_node *phy_node;
|
||||
phy_interface_t phy_if;
|
||||
u32 if_support;
|
||||
int q_num;
|
||||
int vf_id;
|
||||
u32 eport_id;
|
||||
enum hnae_port_type port_type;
|
||||
struct list_head node; /* list to hnae_ae_dev->handle_list */
|
||||
struct hnae_buf_ops *bops; /* operation for the buffer */
|
||||
struct hnae_queue **qs; /* array base of all queues */
|
||||
};
|
||||
|
||||
#define ring_to_dev(ring) ((ring)->q->dev->dev)
|
||||
|
||||
struct hnae_handle *hnae_get_handle(struct device *owner_dev, const char *ae_id,
|
||||
u32 port_id, struct hnae_buf_ops *bops);
|
||||
void hnae_put_handle(struct hnae_handle *handle);
|
||||
int hnae_ae_register(struct hnae_ae_dev *dev, struct module *owner);
|
||||
void hnae_ae_unregister(struct hnae_ae_dev *dev);
|
||||
|
||||
int hnae_register_notifier(struct notifier_block *nb);
|
||||
void hnae_unregister_notifier(struct notifier_block *nb);
|
||||
int hnae_reinit_handle(struct hnae_handle *handle);
|
||||
|
||||
#define hnae_queue_xmit(q, buf_num) writel_relaxed(buf_num, \
|
||||
(q)->tx_ring.io_base + RCB_REG_TAIL)
|
||||
|
||||
#ifndef assert
|
||||
#define assert(cond)
|
||||
#endif
|
||||
|
||||
static inline int hnae_reserve_buffer_map(struct hnae_ring *ring,
|
||||
struct hnae_desc_cb *cb)
|
||||
{
|
||||
struct hnae_buf_ops *bops = ring->q->handle->bops;
|
||||
int ret;
|
||||
|
||||
ret = bops->alloc_buffer(ring, cb);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
ret = bops->map_buffer(ring, cb);
|
||||
if (ret)
|
||||
goto out_with_buf;
|
||||
|
||||
return 0;
|
||||
|
||||
out_with_buf:
|
||||
bops->free_buffer(ring, cb);
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static inline int hnae_alloc_buffer_attach(struct hnae_ring *ring, int i)
|
||||
{
|
||||
int ret = hnae_reserve_buffer_map(ring, &ring->desc_cb[i]);
|
||||
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ring->desc[i].addr = (__le64)ring->desc_cb[i].dma;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline void hnae_buffer_detach(struct hnae_ring *ring, int i)
|
||||
{
|
||||
ring->q->handle->bops->unmap_buffer(ring, &ring->desc_cb[i]);
|
||||
ring->desc[i].addr = 0;
|
||||
}
|
||||
|
||||
static inline void hnae_free_buffer_detach(struct hnae_ring *ring, int i)
|
||||
{
|
||||
struct hnae_buf_ops *bops = ring->q->handle->bops;
|
||||
struct hnae_desc_cb *cb = &ring->desc_cb[i];
|
||||
|
||||
if (!ring->desc_cb[i].dma)
|
||||
return;
|
||||
|
||||
hnae_buffer_detach(ring, i);
|
||||
bops->free_buffer(ring, cb);
|
||||
}
|
||||
|
||||
/* detach a in-used buffer and replace with a reserved one */
|
||||
static inline void hnae_replace_buffer(struct hnae_ring *ring, int i,
|
||||
struct hnae_desc_cb *res_cb)
|
||||
{
|
||||
struct hnae_buf_ops *bops = ring->q->handle->bops;
|
||||
struct hnae_desc_cb tmp_cb = ring->desc_cb[i];
|
||||
|
||||
bops->unmap_buffer(ring, &ring->desc_cb[i]);
|
||||
ring->desc_cb[i] = *res_cb;
|
||||
*res_cb = tmp_cb;
|
||||
ring->desc[i].addr = (__le64)ring->desc_cb[i].dma;
|
||||
ring->desc[i].rx.ipoff_bnum_pid_flag = 0;
|
||||
}
|
||||
|
||||
static inline void hnae_reuse_buffer(struct hnae_ring *ring, int i)
|
||||
{
|
||||
ring->desc_cb[i].reuse_flag = 0;
|
||||
ring->desc[i].addr = (__le64)(ring->desc_cb[i].dma
|
||||
+ ring->desc_cb[i].page_offset);
|
||||
ring->desc[i].rx.ipoff_bnum_pid_flag = 0;
|
||||
}
|
||||
|
||||
#define hnae_set_field(origin, mask, shift, val) \
|
||||
do { \
|
||||
(origin) &= (~(mask)); \
|
||||
(origin) |= ((val) << (shift)) & (mask); \
|
||||
} while (0)
|
||||
|
||||
#define hnae_set_bit(origin, shift, val) \
|
||||
hnae_set_field((origin), (0x1 << (shift)), (shift), (val))
|
||||
|
||||
#define hnae_get_field(origin, mask, shift) (((origin) & (mask)) >> (shift))
|
||||
|
||||
#define hnae_get_bit(origin, shift) \
|
||||
hnae_get_field((origin), (0x1 << (shift)), (shift))
|
||||
|
||||
#endif
|
||||
Загрузка…
Ссылка в новой задаче