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@@ -1,1881 +0,0 @@
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-/*
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- * Blackfin On-Chip MAC Driver
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- *
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- * Copyright 2004-2010 Analog Devices Inc.
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- *
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- * Enter bugs at http://blackfin.uclinux.org/
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- *
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- * Licensed under the GPL-2 or later.
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- */
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-
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-#define DRV_VERSION "1.1"
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-#define DRV_DESC "Blackfin on-chip Ethernet MAC driver"
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-
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-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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-
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-#include <linux/init.h>
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-#include <linux/module.h>
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-#include <linux/kernel.h>
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-#include <linux/sched.h>
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-#include <linux/slab.h>
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-#include <linux/delay.h>
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-#include <linux/timer.h>
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-#include <linux/errno.h>
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-#include <linux/irq.h>
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-#include <linux/io.h>
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-#include <linux/ioport.h>
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-#include <linux/crc32.h>
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-#include <linux/device.h>
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-#include <linux/spinlock.h>
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-#include <linux/mii.h>
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-#include <linux/netdevice.h>
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-#include <linux/etherdevice.h>
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-#include <linux/ethtool.h>
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-#include <linux/skbuff.h>
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-#include <linux/platform_device.h>
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-
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-#include <asm/dma.h>
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-#include <linux/dma-mapping.h>
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-
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-#include <asm/div64.h>
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-#include <asm/dpmc.h>
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-#include <asm/blackfin.h>
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-#include <asm/cacheflush.h>
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-#include <asm/portmux.h>
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-#include <mach/pll.h>
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-
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-#include "bfin_mac.h"
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-
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-MODULE_AUTHOR("Bryan Wu, Luke Yang");
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-MODULE_LICENSE("GPL");
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-MODULE_DESCRIPTION(DRV_DESC);
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-MODULE_ALIAS("platform:bfin_mac");
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-
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-#if defined(CONFIG_BFIN_MAC_USE_L1)
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-# define bfin_mac_alloc(dma_handle, size, num) l1_data_sram_zalloc(size*num)
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-# define bfin_mac_free(dma_handle, ptr, num) l1_data_sram_free(ptr)
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-#else
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-# define bfin_mac_alloc(dma_handle, size, num) \
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- dma_alloc_coherent(NULL, size*num, dma_handle, GFP_KERNEL)
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-# define bfin_mac_free(dma_handle, ptr, num) \
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- dma_free_coherent(NULL, sizeof(*ptr)*num, ptr, dma_handle)
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-#endif
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-
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-#define PKT_BUF_SZ 1580
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-
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-#define MAX_TIMEOUT_CNT 500
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-
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-/* pointers to maintain transmit list */
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-static struct net_dma_desc_tx *tx_list_head;
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-static struct net_dma_desc_tx *tx_list_tail;
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-static struct net_dma_desc_rx *rx_list_head;
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-static struct net_dma_desc_rx *rx_list_tail;
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-static struct net_dma_desc_rx *current_rx_ptr;
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-static struct net_dma_desc_tx *current_tx_ptr;
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-static struct net_dma_desc_tx *tx_desc;
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-static struct net_dma_desc_rx *rx_desc;
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-
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-static void desc_list_free(void)
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-{
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- struct net_dma_desc_rx *r;
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- struct net_dma_desc_tx *t;
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- int i;
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-#if !defined(CONFIG_BFIN_MAC_USE_L1)
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- dma_addr_t dma_handle = 0;
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-#endif
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-
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- if (tx_desc) {
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- t = tx_list_head;
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- for (i = 0; i < CONFIG_BFIN_TX_DESC_NUM; i++) {
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- if (t) {
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- if (t->skb) {
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- dev_kfree_skb(t->skb);
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- t->skb = NULL;
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- }
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- t = t->next;
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- }
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- }
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- bfin_mac_free(dma_handle, tx_desc, CONFIG_BFIN_TX_DESC_NUM);
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- }
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-
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- if (rx_desc) {
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- r = rx_list_head;
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- for (i = 0; i < CONFIG_BFIN_RX_DESC_NUM; i++) {
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- if (r) {
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- if (r->skb) {
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- dev_kfree_skb(r->skb);
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- r->skb = NULL;
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- }
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- r = r->next;
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- }
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- }
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- bfin_mac_free(dma_handle, rx_desc, CONFIG_BFIN_RX_DESC_NUM);
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- }
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-}
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-
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-static int desc_list_init(struct net_device *dev)
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-{
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- int i;
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- struct sk_buff *new_skb;
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-#if !defined(CONFIG_BFIN_MAC_USE_L1)
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- /*
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- * This dma_handle is useless in Blackfin dma_alloc_coherent().
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- * The real dma handler is the return value of dma_alloc_coherent().
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- */
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- dma_addr_t dma_handle;
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-#endif
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-
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- tx_desc = bfin_mac_alloc(&dma_handle,
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- sizeof(struct net_dma_desc_tx),
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- CONFIG_BFIN_TX_DESC_NUM);
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- if (tx_desc == NULL)
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- goto init_error;
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-
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- rx_desc = bfin_mac_alloc(&dma_handle,
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- sizeof(struct net_dma_desc_rx),
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- CONFIG_BFIN_RX_DESC_NUM);
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- if (rx_desc == NULL)
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- goto init_error;
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-
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- /* init tx_list */
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- tx_list_head = tx_list_tail = tx_desc;
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-
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- for (i = 0; i < CONFIG_BFIN_TX_DESC_NUM; i++) {
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- struct net_dma_desc_tx *t = tx_desc + i;
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- struct dma_descriptor *a = &(t->desc_a);
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- struct dma_descriptor *b = &(t->desc_b);
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-
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- /*
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- * disable DMA
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- * read from memory WNR = 0
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- * wordsize is 32 bits
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- * 6 half words is desc size
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- * large desc flow
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- */
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- a->config = WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE;
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- a->start_addr = (unsigned long)t->packet;
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- a->x_count = 0;
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- a->next_dma_desc = b;
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-
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- /*
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- * enabled DMA
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- * write to memory WNR = 1
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- * wordsize is 32 bits
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- * disable interrupt
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- * 6 half words is desc size
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- * large desc flow
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- */
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- b->config = DMAEN | WNR | WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE;
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- b->start_addr = (unsigned long)(&(t->status));
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- b->x_count = 0;
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-
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- t->skb = NULL;
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- tx_list_tail->desc_b.next_dma_desc = a;
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- tx_list_tail->next = t;
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- tx_list_tail = t;
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- }
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- tx_list_tail->next = tx_list_head; /* tx_list is a circle */
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- tx_list_tail->desc_b.next_dma_desc = &(tx_list_head->desc_a);
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- current_tx_ptr = tx_list_head;
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-
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- /* init rx_list */
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- rx_list_head = rx_list_tail = rx_desc;
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-
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- for (i = 0; i < CONFIG_BFIN_RX_DESC_NUM; i++) {
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- struct net_dma_desc_rx *r = rx_desc + i;
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- struct dma_descriptor *a = &(r->desc_a);
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- struct dma_descriptor *b = &(r->desc_b);
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-
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- /* allocate a new skb for next time receive */
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- new_skb = netdev_alloc_skb(dev, PKT_BUF_SZ + NET_IP_ALIGN);
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- if (!new_skb)
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- goto init_error;
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-
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- skb_reserve(new_skb, NET_IP_ALIGN);
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- /* Invalidate the data cache of skb->data range when it is write back
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- * cache. It will prevent overwriting the new data from DMA
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- */
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- blackfin_dcache_invalidate_range((unsigned long)new_skb->head,
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- (unsigned long)new_skb->end);
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- r->skb = new_skb;
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-
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- /*
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- * enabled DMA
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- * write to memory WNR = 1
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- * wordsize is 32 bits
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- * disable interrupt
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- * 6 half words is desc size
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- * large desc flow
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- */
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- a->config = DMAEN | WNR | WDSIZE_32 | NDSIZE_6 | DMAFLOW_LARGE;
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- /* since RXDWA is enabled */
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- a->start_addr = (unsigned long)new_skb->data - 2;
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- a->x_count = 0;
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- a->next_dma_desc = b;
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-
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- /*
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- * enabled DMA
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- * write to memory WNR = 1
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- * wordsize is 32 bits
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- * enable interrupt
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- * 6 half words is desc size
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- * large desc flow
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- */
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- b->config = DMAEN | WNR | WDSIZE_32 | DI_EN |
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- NDSIZE_6 | DMAFLOW_LARGE;
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- b->start_addr = (unsigned long)(&(r->status));
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- b->x_count = 0;
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-
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- rx_list_tail->desc_b.next_dma_desc = a;
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- rx_list_tail->next = r;
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- rx_list_tail = r;
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- }
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- rx_list_tail->next = rx_list_head; /* rx_list is a circle */
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- rx_list_tail->desc_b.next_dma_desc = &(rx_list_head->desc_a);
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- current_rx_ptr = rx_list_head;
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-
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- return 0;
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-
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-init_error:
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- desc_list_free();
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- pr_err("kmalloc failed\n");
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- return -ENOMEM;
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-}
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-
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-
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-/*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/
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-
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-/*
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- * MII operations
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- */
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-/* Wait until the previous MDC/MDIO transaction has completed */
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-static int bfin_mdio_poll(void)
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-{
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- int timeout_cnt = MAX_TIMEOUT_CNT;
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-
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- /* poll the STABUSY bit */
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- while ((bfin_read_EMAC_STAADD()) & STABUSY) {
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- udelay(1);
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- if (timeout_cnt-- < 0) {
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- pr_err("wait MDC/MDIO transaction to complete timeout\n");
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- return -ETIMEDOUT;
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- }
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- }
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-
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- return 0;
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-}
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-
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-/* Read an off-chip register in a PHY through the MDC/MDIO port */
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-static int bfin_mdiobus_read(struct mii_bus *bus, int phy_addr, int regnum)
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-{
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- int ret;
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-
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- ret = bfin_mdio_poll();
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- if (ret)
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- return ret;
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-
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- /* read mode */
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- bfin_write_EMAC_STAADD(SET_PHYAD((u16) phy_addr) |
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- SET_REGAD((u16) regnum) |
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- STABUSY);
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-
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- ret = bfin_mdio_poll();
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- if (ret)
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- return ret;
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-
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- return (int) bfin_read_EMAC_STADAT();
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-}
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-
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-/* Write an off-chip register in a PHY through the MDC/MDIO port */
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-static int bfin_mdiobus_write(struct mii_bus *bus, int phy_addr, int regnum,
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- u16 value)
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-{
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- int ret;
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-
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- ret = bfin_mdio_poll();
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- if (ret)
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- return ret;
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-
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- bfin_write_EMAC_STADAT((u32) value);
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-
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- /* write mode */
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- bfin_write_EMAC_STAADD(SET_PHYAD((u16) phy_addr) |
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- SET_REGAD((u16) regnum) |
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- STAOP |
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- STABUSY);
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-
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- return bfin_mdio_poll();
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-}
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-
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-static void bfin_mac_adjust_link(struct net_device *dev)
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-{
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- struct bfin_mac_local *lp = netdev_priv(dev);
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- struct phy_device *phydev = dev->phydev;
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- unsigned long flags;
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- int new_state = 0;
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-
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- spin_lock_irqsave(&lp->lock, flags);
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- if (phydev->link) {
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- /* Now we make sure that we can be in full duplex mode.
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- * If not, we operate in half-duplex mode. */
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- if (phydev->duplex != lp->old_duplex) {
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- u32 opmode = bfin_read_EMAC_OPMODE();
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- new_state = 1;
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-
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- if (phydev->duplex)
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- opmode |= FDMODE;
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- else
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- opmode &= ~(FDMODE);
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-
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- bfin_write_EMAC_OPMODE(opmode);
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- lp->old_duplex = phydev->duplex;
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- }
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-
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- if (phydev->speed != lp->old_speed) {
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- if (phydev->interface == PHY_INTERFACE_MODE_RMII) {
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- u32 opmode = bfin_read_EMAC_OPMODE();
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- switch (phydev->speed) {
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- case 10:
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- opmode |= RMII_10;
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- break;
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- case 100:
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- opmode &= ~RMII_10;
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- break;
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- default:
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- netdev_warn(dev,
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- "Ack! Speed (%d) is not 10/100!\n",
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- phydev->speed);
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- break;
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- }
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- bfin_write_EMAC_OPMODE(opmode);
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- }
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-
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- new_state = 1;
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- lp->old_speed = phydev->speed;
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- }
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-
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- if (!lp->old_link) {
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- new_state = 1;
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- lp->old_link = 1;
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- }
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- } else if (lp->old_link) {
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- new_state = 1;
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- lp->old_link = 0;
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- lp->old_speed = 0;
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- lp->old_duplex = -1;
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- }
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-
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- if (new_state) {
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- u32 opmode = bfin_read_EMAC_OPMODE();
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- phy_print_status(phydev);
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- pr_debug("EMAC_OPMODE = 0x%08x\n", opmode);
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- }
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-
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- spin_unlock_irqrestore(&lp->lock, flags);
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-}
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-
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-/* MDC = 2.5 MHz */
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-#define MDC_CLK 2500000
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-
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-static int mii_probe(struct net_device *dev, int phy_mode)
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-{
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- struct bfin_mac_local *lp = netdev_priv(dev);
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- struct phy_device *phydev;
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- unsigned short sysctl;
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- u32 sclk, mdc_div;
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-
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- /* Enable PHY output early */
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- if (!(bfin_read_VR_CTL() & CLKBUFOE))
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- bfin_write_VR_CTL(bfin_read_VR_CTL() | CLKBUFOE);
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-
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- sclk = get_sclk();
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- mdc_div = ((sclk / MDC_CLK) / 2) - 1;
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-
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- sysctl = bfin_read_EMAC_SYSCTL();
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- sysctl = (sysctl & ~MDCDIV) | SET_MDCDIV(mdc_div);
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- bfin_write_EMAC_SYSCTL(sysctl);
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-
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- phydev = phy_find_first(lp->mii_bus);
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- if (!phydev) {
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- netdev_err(dev, "no phy device found\n");
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- return -ENODEV;
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- }
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-
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- if (phy_mode != PHY_INTERFACE_MODE_RMII &&
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- phy_mode != PHY_INTERFACE_MODE_MII) {
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|
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- netdev_err(dev, "invalid phy interface mode\n");
|
|
|
- return -EINVAL;
|
|
|
- }
|
|
|
-
|
|
|
- phydev = phy_connect(dev, phydev_name(phydev),
|
|
|
- &bfin_mac_adjust_link, phy_mode);
|
|
|
-
|
|
|
- if (IS_ERR(phydev)) {
|
|
|
- netdev_err(dev, "could not attach PHY\n");
|
|
|
- return PTR_ERR(phydev);
|
|
|
- }
|
|
|
-
|
|
|
- /* mask with MAC supported features */
|
|
|
- phydev->supported &= (SUPPORTED_10baseT_Half
|
|
|
- | SUPPORTED_10baseT_Full
|
|
|
- | SUPPORTED_100baseT_Half
|
|
|
- | SUPPORTED_100baseT_Full
|
|
|
- | SUPPORTED_Autoneg
|
|
|
- | SUPPORTED_Pause | SUPPORTED_Asym_Pause
|
|
|
- | SUPPORTED_MII
|
|
|
- | SUPPORTED_TP);
|
|
|
-
|
|
|
- phydev->advertising = phydev->supported;
|
|
|
-
|
|
|
- lp->old_link = 0;
|
|
|
- lp->old_speed = 0;
|
|
|
- lp->old_duplex = -1;
|
|
|
-
|
|
|
- phy_attached_print(phydev, "mdc_clk=%dHz(mdc_div=%d)@sclk=%dMHz)\n",
|
|
|
- MDC_CLK, mdc_div, sclk / 1000000);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * Ethtool support
|
|
|
- */
|
|
|
-
|
|
|
-/*
|
|
|
- * interrupt routine for magic packet wakeup
|
|
|
- */
|
|
|
-static irqreturn_t bfin_mac_wake_interrupt(int irq, void *dev_id)
|
|
|
-{
|
|
|
- return IRQ_HANDLED;
|
|
|
-}
|
|
|
-
|
|
|
-static void bfin_mac_ethtool_getdrvinfo(struct net_device *dev,
|
|
|
- struct ethtool_drvinfo *info)
|
|
|
-{
|
|
|
- strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
|
|
|
- strlcpy(info->version, DRV_VERSION, sizeof(info->version));
|
|
|
- strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
|
|
|
- strlcpy(info->bus_info, dev_name(&dev->dev), sizeof(info->bus_info));
|
|
|
-}
|
|
|
-
|
|
|
-static void bfin_mac_ethtool_getwol(struct net_device *dev,
|
|
|
- struct ethtool_wolinfo *wolinfo)
|
|
|
-{
|
|
|
- struct bfin_mac_local *lp = netdev_priv(dev);
|
|
|
-
|
|
|
- wolinfo->supported = WAKE_MAGIC;
|
|
|
- wolinfo->wolopts = lp->wol;
|
|
|
-}
|
|
|
-
|
|
|
-static int bfin_mac_ethtool_setwol(struct net_device *dev,
|
|
|
- struct ethtool_wolinfo *wolinfo)
|
|
|
-{
|
|
|
- struct bfin_mac_local *lp = netdev_priv(dev);
|
|
|
- int rc;
|
|
|
-
|
|
|
- if (wolinfo->wolopts & (WAKE_MAGICSECURE |
|
|
|
- WAKE_UCAST |
|
|
|
- WAKE_MCAST |
|
|
|
- WAKE_BCAST |
|
|
|
- WAKE_ARP))
|
|
|
- return -EOPNOTSUPP;
|
|
|
-
|
|
|
- lp->wol = wolinfo->wolopts;
|
|
|
-
|
|
|
- if (lp->wol && !lp->irq_wake_requested) {
|
|
|
- /* register wake irq handler */
|
|
|
- rc = request_irq(IRQ_MAC_WAKEDET, bfin_mac_wake_interrupt,
|
|
|
- 0, "EMAC_WAKE", dev);
|
|
|
- if (rc)
|
|
|
- return rc;
|
|
|
- lp->irq_wake_requested = true;
|
|
|
- }
|
|
|
-
|
|
|
- if (!lp->wol && lp->irq_wake_requested) {
|
|
|
- free_irq(IRQ_MAC_WAKEDET, dev);
|
|
|
- lp->irq_wake_requested = false;
|
|
|
- }
|
|
|
-
|
|
|
- /* Make sure the PHY driver doesn't suspend */
|
|
|
- device_init_wakeup(&dev->dev, lp->wol);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-#ifdef CONFIG_BFIN_MAC_USE_HWSTAMP
|
|
|
-static int bfin_mac_ethtool_get_ts_info(struct net_device *dev,
|
|
|
- struct ethtool_ts_info *info)
|
|
|
-{
|
|
|
- struct bfin_mac_local *lp = netdev_priv(dev);
|
|
|
-
|
|
|
- info->so_timestamping =
|
|
|
- SOF_TIMESTAMPING_TX_HARDWARE |
|
|
|
- SOF_TIMESTAMPING_RX_HARDWARE |
|
|
|
- SOF_TIMESTAMPING_RAW_HARDWARE;
|
|
|
- info->phc_index = lp->phc_index;
|
|
|
- info->tx_types =
|
|
|
- (1 << HWTSTAMP_TX_OFF) |
|
|
|
- (1 << HWTSTAMP_TX_ON);
|
|
|
- info->rx_filters =
|
|
|
- (1 << HWTSTAMP_FILTER_NONE) |
|
|
|
- (1 << HWTSTAMP_FILTER_PTP_V1_L4_EVENT) |
|
|
|
- (1 << HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
|
|
|
- (1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT);
|
|
|
- return 0;
|
|
|
-}
|
|
|
-#endif
|
|
|
-
|
|
|
-static const struct ethtool_ops bfin_mac_ethtool_ops = {
|
|
|
- .get_link = ethtool_op_get_link,
|
|
|
- .get_drvinfo = bfin_mac_ethtool_getdrvinfo,
|
|
|
- .get_wol = bfin_mac_ethtool_getwol,
|
|
|
- .set_wol = bfin_mac_ethtool_setwol,
|
|
|
-#ifdef CONFIG_BFIN_MAC_USE_HWSTAMP
|
|
|
- .get_ts_info = bfin_mac_ethtool_get_ts_info,
|
|
|
-#endif
|
|
|
- .get_link_ksettings = phy_ethtool_get_link_ksettings,
|
|
|
- .set_link_ksettings = phy_ethtool_set_link_ksettings,
|
|
|
-};
|
|
|
-
|
|
|
-/**************************************************************************/
|
|
|
-static void setup_system_regs(struct net_device *dev)
|
|
|
-{
|
|
|
- struct bfin_mac_local *lp = netdev_priv(dev);
|
|
|
- int i;
|
|
|
- unsigned short sysctl;
|
|
|
-
|
|
|
- /*
|
|
|
- * Odd word alignment for Receive Frame DMA word
|
|
|
- * Configure checksum support and rcve frame word alignment
|
|
|
- */
|
|
|
- sysctl = bfin_read_EMAC_SYSCTL();
|
|
|
- /*
|
|
|
- * check if interrupt is requested for any PHY,
|
|
|
- * enable PHY interrupt only if needed
|
|
|
- */
|
|
|
- for (i = 0; i < PHY_MAX_ADDR; ++i)
|
|
|
- if (lp->mii_bus->irq[i] != PHY_POLL)
|
|
|
- break;
|
|
|
- if (i < PHY_MAX_ADDR)
|
|
|
- sysctl |= PHYIE;
|
|
|
- sysctl |= RXDWA;
|
|
|
-#if defined(BFIN_MAC_CSUM_OFFLOAD)
|
|
|
- sysctl |= RXCKS;
|
|
|
-#else
|
|
|
- sysctl &= ~RXCKS;
|
|
|
-#endif
|
|
|
- bfin_write_EMAC_SYSCTL(sysctl);
|
|
|
-
|
|
|
- bfin_write_EMAC_MMC_CTL(RSTC | CROLL);
|
|
|
-
|
|
|
- /* Set vlan regs to let 1522 bytes long packets pass through */
|
|
|
- bfin_write_EMAC_VLAN1(lp->vlan1_mask);
|
|
|
- bfin_write_EMAC_VLAN2(lp->vlan2_mask);
|
|
|
-
|
|
|
- /* Initialize the TX DMA channel registers */
|
|
|
- bfin_write_DMA2_X_COUNT(0);
|
|
|
- bfin_write_DMA2_X_MODIFY(4);
|
|
|
- bfin_write_DMA2_Y_COUNT(0);
|
|
|
- bfin_write_DMA2_Y_MODIFY(0);
|
|
|
-
|
|
|
- /* Initialize the RX DMA channel registers */
|
|
|
- bfin_write_DMA1_X_COUNT(0);
|
|
|
- bfin_write_DMA1_X_MODIFY(4);
|
|
|
- bfin_write_DMA1_Y_COUNT(0);
|
|
|
- bfin_write_DMA1_Y_MODIFY(0);
|
|
|
-}
|
|
|
-
|
|
|
-static void setup_mac_addr(u8 *mac_addr)
|
|
|
-{
|
|
|
- u32 addr_low = le32_to_cpu(*(__le32 *) & mac_addr[0]);
|
|
|
- u16 addr_hi = le16_to_cpu(*(__le16 *) & mac_addr[4]);
|
|
|
-
|
|
|
- /* this depends on a little-endian machine */
|
|
|
- bfin_write_EMAC_ADDRLO(addr_low);
|
|
|
- bfin_write_EMAC_ADDRHI(addr_hi);
|
|
|
-}
|
|
|
-
|
|
|
-static int bfin_mac_set_mac_address(struct net_device *dev, void *p)
|
|
|
-{
|
|
|
- struct sockaddr *addr = p;
|
|
|
- if (netif_running(dev))
|
|
|
- return -EBUSY;
|
|
|
- memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
|
|
|
- setup_mac_addr(dev->dev_addr);
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-#ifdef CONFIG_BFIN_MAC_USE_HWSTAMP
|
|
|
-#define bfin_mac_hwtstamp_is_none(cfg) ((cfg) == HWTSTAMP_FILTER_NONE)
|
|
|
-
|
|
|
-static u32 bfin_select_phc_clock(u32 input_clk, unsigned int *shift_result)
|
|
|
-{
|
|
|
- u32 ipn = 1000000000UL / input_clk;
|
|
|
- u32 ppn = 1;
|
|
|
- unsigned int shift = 0;
|
|
|
-
|
|
|
- while (ppn <= ipn) {
|
|
|
- ppn <<= 1;
|
|
|
- shift++;
|
|
|
- }
|
|
|
- *shift_result = shift;
|
|
|
- return 1000000000UL / ppn;
|
|
|
-}
|
|
|
-
|
|
|
-static int bfin_mac_hwtstamp_set(struct net_device *netdev,
|
|
|
- struct ifreq *ifr)
|
|
|
-{
|
|
|
- struct hwtstamp_config config;
|
|
|
- struct bfin_mac_local *lp = netdev_priv(netdev);
|
|
|
- u16 ptpctl;
|
|
|
- u32 ptpfv1, ptpfv2, ptpfv3, ptpfoff;
|
|
|
-
|
|
|
- if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
|
|
|
- return -EFAULT;
|
|
|
-
|
|
|
- pr_debug("%s config flag:0x%x, tx_type:0x%x, rx_filter:0x%x\n",
|
|
|
- __func__, config.flags, config.tx_type, config.rx_filter);
|
|
|
-
|
|
|
- /* reserved for future extensions */
|
|
|
- if (config.flags)
|
|
|
- return -EINVAL;
|
|
|
-
|
|
|
- if ((config.tx_type != HWTSTAMP_TX_OFF) &&
|
|
|
- (config.tx_type != HWTSTAMP_TX_ON))
|
|
|
- return -ERANGE;
|
|
|
-
|
|
|
- ptpctl = bfin_read_EMAC_PTP_CTL();
|
|
|
-
|
|
|
- switch (config.rx_filter) {
|
|
|
- case HWTSTAMP_FILTER_NONE:
|
|
|
- /*
|
|
|
- * Dont allow any timestamping
|
|
|
- */
|
|
|
- ptpfv3 = 0xFFFFFFFF;
|
|
|
- bfin_write_EMAC_PTP_FV3(ptpfv3);
|
|
|
- break;
|
|
|
- case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
|
|
|
- case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
|
|
|
- case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
|
|
|
- /*
|
|
|
- * Clear the five comparison mask bits (bits[12:8]) in EMAC_PTP_CTL)
|
|
|
- * to enable all the field matches.
|
|
|
- */
|
|
|
- ptpctl &= ~0x1F00;
|
|
|
- bfin_write_EMAC_PTP_CTL(ptpctl);
|
|
|
- /*
|
|
|
- * Keep the default values of the EMAC_PTP_FOFF register.
|
|
|
- */
|
|
|
- ptpfoff = 0x4A24170C;
|
|
|
- bfin_write_EMAC_PTP_FOFF(ptpfoff);
|
|
|
- /*
|
|
|
- * Keep the default values of the EMAC_PTP_FV1 and EMAC_PTP_FV2
|
|
|
- * registers.
|
|
|
- */
|
|
|
- ptpfv1 = 0x11040800;
|
|
|
- bfin_write_EMAC_PTP_FV1(ptpfv1);
|
|
|
- ptpfv2 = 0x0140013F;
|
|
|
- bfin_write_EMAC_PTP_FV2(ptpfv2);
|
|
|
- /*
|
|
|
- * The default value (0xFFFC) allows the timestamping of both
|
|
|
- * received Sync messages and Delay_Req messages.
|
|
|
- */
|
|
|
- ptpfv3 = 0xFFFFFFFC;
|
|
|
- bfin_write_EMAC_PTP_FV3(ptpfv3);
|
|
|
-
|
|
|
- config.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT;
|
|
|
- break;
|
|
|
- case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
|
|
|
- case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
|
|
|
- case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
|
|
|
- /* Clear all five comparison mask bits (bits[12:8]) in the
|
|
|
- * EMAC_PTP_CTL register to enable all the field matches.
|
|
|
- */
|
|
|
- ptpctl &= ~0x1F00;
|
|
|
- bfin_write_EMAC_PTP_CTL(ptpctl);
|
|
|
- /*
|
|
|
- * Keep the default values of the EMAC_PTP_FOFF register, except set
|
|
|
- * the PTPCOF field to 0x2A.
|
|
|
- */
|
|
|
- ptpfoff = 0x2A24170C;
|
|
|
- bfin_write_EMAC_PTP_FOFF(ptpfoff);
|
|
|
- /*
|
|
|
- * Keep the default values of the EMAC_PTP_FV1 and EMAC_PTP_FV2
|
|
|
- * registers.
|
|
|
- */
|
|
|
- ptpfv1 = 0x11040800;
|
|
|
- bfin_write_EMAC_PTP_FV1(ptpfv1);
|
|
|
- ptpfv2 = 0x0140013F;
|
|
|
- bfin_write_EMAC_PTP_FV2(ptpfv2);
|
|
|
- /*
|
|
|
- * To allow the timestamping of Pdelay_Req and Pdelay_Resp, set
|
|
|
- * the value to 0xFFF0.
|
|
|
- */
|
|
|
- ptpfv3 = 0xFFFFFFF0;
|
|
|
- bfin_write_EMAC_PTP_FV3(ptpfv3);
|
|
|
-
|
|
|
- config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT;
|
|
|
- break;
|
|
|
- case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
|
|
|
- case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
|
|
|
- case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
|
|
|
- /*
|
|
|
- * Clear bits 8 and 12 of the EMAC_PTP_CTL register to enable only the
|
|
|
- * EFTM and PTPCM field comparison.
|
|
|
- */
|
|
|
- ptpctl &= ~0x1100;
|
|
|
- bfin_write_EMAC_PTP_CTL(ptpctl);
|
|
|
- /*
|
|
|
- * Keep the default values of all the fields of the EMAC_PTP_FOFF
|
|
|
- * register, except set the PTPCOF field to 0x0E.
|
|
|
- */
|
|
|
- ptpfoff = 0x0E24170C;
|
|
|
- bfin_write_EMAC_PTP_FOFF(ptpfoff);
|
|
|
- /*
|
|
|
- * Program bits [15:0] of the EMAC_PTP_FV1 register to 0x88F7, which
|
|
|
- * corresponds to PTP messages on the MAC layer.
|
|
|
- */
|
|
|
- ptpfv1 = 0x110488F7;
|
|
|
- bfin_write_EMAC_PTP_FV1(ptpfv1);
|
|
|
- ptpfv2 = 0x0140013F;
|
|
|
- bfin_write_EMAC_PTP_FV2(ptpfv2);
|
|
|
- /*
|
|
|
- * To allow the timestamping of Pdelay_Req and Pdelay_Resp
|
|
|
- * messages, set the value to 0xFFF0.
|
|
|
- */
|
|
|
- ptpfv3 = 0xFFFFFFF0;
|
|
|
- bfin_write_EMAC_PTP_FV3(ptpfv3);
|
|
|
-
|
|
|
- config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT;
|
|
|
- break;
|
|
|
- default:
|
|
|
- return -ERANGE;
|
|
|
- }
|
|
|
-
|
|
|
- if (config.tx_type == HWTSTAMP_TX_OFF &&
|
|
|
- bfin_mac_hwtstamp_is_none(config.rx_filter)) {
|
|
|
- ptpctl &= ~PTP_EN;
|
|
|
- bfin_write_EMAC_PTP_CTL(ptpctl);
|
|
|
-
|
|
|
- SSYNC();
|
|
|
- } else {
|
|
|
- ptpctl |= PTP_EN;
|
|
|
- bfin_write_EMAC_PTP_CTL(ptpctl);
|
|
|
-
|
|
|
- /*
|
|
|
- * clear any existing timestamp
|
|
|
- */
|
|
|
- bfin_read_EMAC_PTP_RXSNAPLO();
|
|
|
- bfin_read_EMAC_PTP_RXSNAPHI();
|
|
|
-
|
|
|
- bfin_read_EMAC_PTP_TXSNAPLO();
|
|
|
- bfin_read_EMAC_PTP_TXSNAPHI();
|
|
|
-
|
|
|
- SSYNC();
|
|
|
- }
|
|
|
-
|
|
|
- lp->stamp_cfg = config;
|
|
|
- return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ?
|
|
|
- -EFAULT : 0;
|
|
|
-}
|
|
|
-
|
|
|
-static int bfin_mac_hwtstamp_get(struct net_device *netdev,
|
|
|
- struct ifreq *ifr)
|
|
|
-{
|
|
|
- struct bfin_mac_local *lp = netdev_priv(netdev);
|
|
|
-
|
|
|
- return copy_to_user(ifr->ifr_data, &lp->stamp_cfg,
|
|
|
- sizeof(lp->stamp_cfg)) ?
|
|
|
- -EFAULT : 0;
|
|
|
-}
|
|
|
-
|
|
|
-static void bfin_tx_hwtstamp(struct net_device *netdev, struct sk_buff *skb)
|
|
|
-{
|
|
|
- struct bfin_mac_local *lp = netdev_priv(netdev);
|
|
|
-
|
|
|
- if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) {
|
|
|
- int timeout_cnt = MAX_TIMEOUT_CNT;
|
|
|
-
|
|
|
- /* When doing time stamping, keep the connection to the socket
|
|
|
- * a while longer
|
|
|
- */
|
|
|
- skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
|
|
|
-
|
|
|
- /*
|
|
|
- * The timestamping is done at the EMAC module's MII/RMII interface
|
|
|
- * when the module sees the Start of Frame of an event message packet. This
|
|
|
- * interface is the closest possible place to the physical Ethernet transmission
|
|
|
- * medium, providing the best timing accuracy.
|
|
|
- */
|
|
|
- while ((!(bfin_read_EMAC_PTP_ISTAT() & TXTL)) && (--timeout_cnt))
|
|
|
- udelay(1);
|
|
|
- if (timeout_cnt == 0)
|
|
|
- netdev_err(netdev, "timestamp the TX packet failed\n");
|
|
|
- else {
|
|
|
- struct skb_shared_hwtstamps shhwtstamps;
|
|
|
- u64 ns;
|
|
|
- u64 regval;
|
|
|
-
|
|
|
- regval = bfin_read_EMAC_PTP_TXSNAPLO();
|
|
|
- regval |= (u64)bfin_read_EMAC_PTP_TXSNAPHI() << 32;
|
|
|
- memset(&shhwtstamps, 0, sizeof(shhwtstamps));
|
|
|
- ns = regval << lp->shift;
|
|
|
- shhwtstamps.hwtstamp = ns_to_ktime(ns);
|
|
|
- skb_tstamp_tx(skb, &shhwtstamps);
|
|
|
- }
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-static void bfin_rx_hwtstamp(struct net_device *netdev, struct sk_buff *skb)
|
|
|
-{
|
|
|
- struct bfin_mac_local *lp = netdev_priv(netdev);
|
|
|
- u32 valid;
|
|
|
- u64 regval, ns;
|
|
|
- struct skb_shared_hwtstamps *shhwtstamps;
|
|
|
-
|
|
|
- if (bfin_mac_hwtstamp_is_none(lp->stamp_cfg.rx_filter))
|
|
|
- return;
|
|
|
-
|
|
|
- valid = bfin_read_EMAC_PTP_ISTAT() & RXEL;
|
|
|
- if (!valid)
|
|
|
- return;
|
|
|
-
|
|
|
- shhwtstamps = skb_hwtstamps(skb);
|
|
|
-
|
|
|
- regval = bfin_read_EMAC_PTP_RXSNAPLO();
|
|
|
- regval |= (u64)bfin_read_EMAC_PTP_RXSNAPHI() << 32;
|
|
|
- ns = regval << lp->shift;
|
|
|
- memset(shhwtstamps, 0, sizeof(*shhwtstamps));
|
|
|
- shhwtstamps->hwtstamp = ns_to_ktime(ns);
|
|
|
-}
|
|
|
-
|
|
|
-static void bfin_mac_hwtstamp_init(struct net_device *netdev)
|
|
|
-{
|
|
|
- struct bfin_mac_local *lp = netdev_priv(netdev);
|
|
|
- u64 addend, ppb;
|
|
|
- u32 input_clk, phc_clk;
|
|
|
-
|
|
|
- /* Initialize hardware timer */
|
|
|
- input_clk = get_sclk();
|
|
|
- phc_clk = bfin_select_phc_clock(input_clk, &lp->shift);
|
|
|
- addend = phc_clk * (1ULL << 32);
|
|
|
- do_div(addend, input_clk);
|
|
|
- bfin_write_EMAC_PTP_ADDEND((u32)addend);
|
|
|
-
|
|
|
- lp->addend = addend;
|
|
|
- ppb = 1000000000ULL * input_clk;
|
|
|
- do_div(ppb, phc_clk);
|
|
|
- lp->max_ppb = ppb - 1000000000ULL - 1ULL;
|
|
|
-
|
|
|
- /* Initialize hwstamp config */
|
|
|
- lp->stamp_cfg.rx_filter = HWTSTAMP_FILTER_NONE;
|
|
|
- lp->stamp_cfg.tx_type = HWTSTAMP_TX_OFF;
|
|
|
-}
|
|
|
-
|
|
|
-static u64 bfin_ptp_time_read(struct bfin_mac_local *lp)
|
|
|
-{
|
|
|
- u64 ns;
|
|
|
- u32 lo, hi;
|
|
|
-
|
|
|
- lo = bfin_read_EMAC_PTP_TIMELO();
|
|
|
- hi = bfin_read_EMAC_PTP_TIMEHI();
|
|
|
-
|
|
|
- ns = ((u64) hi) << 32;
|
|
|
- ns |= lo;
|
|
|
- ns <<= lp->shift;
|
|
|
-
|
|
|
- return ns;
|
|
|
-}
|
|
|
-
|
|
|
-static void bfin_ptp_time_write(struct bfin_mac_local *lp, u64 ns)
|
|
|
-{
|
|
|
- u32 hi, lo;
|
|
|
-
|
|
|
- ns >>= lp->shift;
|
|
|
- hi = ns >> 32;
|
|
|
- lo = ns & 0xffffffff;
|
|
|
-
|
|
|
- bfin_write_EMAC_PTP_TIMELO(lo);
|
|
|
- bfin_write_EMAC_PTP_TIMEHI(hi);
|
|
|
-}
|
|
|
-
|
|
|
-/* PTP Hardware Clock operations */
|
|
|
-
|
|
|
-static int bfin_ptp_adjfreq(struct ptp_clock_info *ptp, s32 ppb)
|
|
|
-{
|
|
|
- u64 adj;
|
|
|
- u32 diff, addend;
|
|
|
- int neg_adj = 0;
|
|
|
- struct bfin_mac_local *lp =
|
|
|
- container_of(ptp, struct bfin_mac_local, caps);
|
|
|
-
|
|
|
- if (ppb < 0) {
|
|
|
- neg_adj = 1;
|
|
|
- ppb = -ppb;
|
|
|
- }
|
|
|
- addend = lp->addend;
|
|
|
- adj = addend;
|
|
|
- adj *= ppb;
|
|
|
- diff = div_u64(adj, 1000000000ULL);
|
|
|
-
|
|
|
- addend = neg_adj ? addend - diff : addend + diff;
|
|
|
-
|
|
|
- bfin_write_EMAC_PTP_ADDEND(addend);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static int bfin_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta)
|
|
|
-{
|
|
|
- s64 now;
|
|
|
- unsigned long flags;
|
|
|
- struct bfin_mac_local *lp =
|
|
|
- container_of(ptp, struct bfin_mac_local, caps);
|
|
|
-
|
|
|
- spin_lock_irqsave(&lp->phc_lock, flags);
|
|
|
-
|
|
|
- now = bfin_ptp_time_read(lp);
|
|
|
- now += delta;
|
|
|
- bfin_ptp_time_write(lp, now);
|
|
|
-
|
|
|
- spin_unlock_irqrestore(&lp->phc_lock, flags);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static int bfin_ptp_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts)
|
|
|
-{
|
|
|
- u64 ns;
|
|
|
- unsigned long flags;
|
|
|
- struct bfin_mac_local *lp =
|
|
|
- container_of(ptp, struct bfin_mac_local, caps);
|
|
|
-
|
|
|
- spin_lock_irqsave(&lp->phc_lock, flags);
|
|
|
-
|
|
|
- ns = bfin_ptp_time_read(lp);
|
|
|
-
|
|
|
- spin_unlock_irqrestore(&lp->phc_lock, flags);
|
|
|
-
|
|
|
- *ts = ns_to_timespec64(ns);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static int bfin_ptp_settime(struct ptp_clock_info *ptp,
|
|
|
- const struct timespec64 *ts)
|
|
|
-{
|
|
|
- u64 ns;
|
|
|
- unsigned long flags;
|
|
|
- struct bfin_mac_local *lp =
|
|
|
- container_of(ptp, struct bfin_mac_local, caps);
|
|
|
-
|
|
|
- ns = timespec64_to_ns(ts);
|
|
|
-
|
|
|
- spin_lock_irqsave(&lp->phc_lock, flags);
|
|
|
-
|
|
|
- bfin_ptp_time_write(lp, ns);
|
|
|
-
|
|
|
- spin_unlock_irqrestore(&lp->phc_lock, flags);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static int bfin_ptp_enable(struct ptp_clock_info *ptp,
|
|
|
- struct ptp_clock_request *rq, int on)
|
|
|
-{
|
|
|
- return -EOPNOTSUPP;
|
|
|
-}
|
|
|
-
|
|
|
-static const struct ptp_clock_info bfin_ptp_caps = {
|
|
|
- .owner = THIS_MODULE,
|
|
|
- .name = "BF518 clock",
|
|
|
- .max_adj = 0,
|
|
|
- .n_alarm = 0,
|
|
|
- .n_ext_ts = 0,
|
|
|
- .n_per_out = 0,
|
|
|
- .n_pins = 0,
|
|
|
- .pps = 0,
|
|
|
- .adjfreq = bfin_ptp_adjfreq,
|
|
|
- .adjtime = bfin_ptp_adjtime,
|
|
|
- .gettime64 = bfin_ptp_gettime,
|
|
|
- .settime64 = bfin_ptp_settime,
|
|
|
- .enable = bfin_ptp_enable,
|
|
|
-};
|
|
|
-
|
|
|
-static int bfin_phc_init(struct net_device *netdev, struct device *dev)
|
|
|
-{
|
|
|
- struct bfin_mac_local *lp = netdev_priv(netdev);
|
|
|
-
|
|
|
- lp->caps = bfin_ptp_caps;
|
|
|
- lp->caps.max_adj = lp->max_ppb;
|
|
|
- lp->clock = ptp_clock_register(&lp->caps, dev);
|
|
|
- if (IS_ERR(lp->clock))
|
|
|
- return PTR_ERR(lp->clock);
|
|
|
-
|
|
|
- lp->phc_index = ptp_clock_index(lp->clock);
|
|
|
- spin_lock_init(&lp->phc_lock);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static void bfin_phc_release(struct bfin_mac_local *lp)
|
|
|
-{
|
|
|
- ptp_clock_unregister(lp->clock);
|
|
|
-}
|
|
|
-
|
|
|
-#else
|
|
|
-# define bfin_mac_hwtstamp_is_none(cfg) 0
|
|
|
-# define bfin_mac_hwtstamp_init(dev)
|
|
|
-# define bfin_mac_hwtstamp_set(dev, ifr) (-EOPNOTSUPP)
|
|
|
-# define bfin_mac_hwtstamp_get(dev, ifr) (-EOPNOTSUPP)
|
|
|
-# define bfin_rx_hwtstamp(dev, skb)
|
|
|
-# define bfin_tx_hwtstamp(dev, skb)
|
|
|
-# define bfin_phc_init(netdev, dev) 0
|
|
|
-# define bfin_phc_release(lp)
|
|
|
-#endif
|
|
|
-
|
|
|
-static inline void _tx_reclaim_skb(void)
|
|
|
-{
|
|
|
- do {
|
|
|
- tx_list_head->desc_a.config &= ~DMAEN;
|
|
|
- tx_list_head->status.status_word = 0;
|
|
|
- if (tx_list_head->skb) {
|
|
|
- dev_consume_skb_any(tx_list_head->skb);
|
|
|
- tx_list_head->skb = NULL;
|
|
|
- }
|
|
|
- tx_list_head = tx_list_head->next;
|
|
|
-
|
|
|
- } while (tx_list_head->status.status_word != 0);
|
|
|
-}
|
|
|
-
|
|
|
-static void tx_reclaim_skb(struct bfin_mac_local *lp)
|
|
|
-{
|
|
|
- int timeout_cnt = MAX_TIMEOUT_CNT;
|
|
|
-
|
|
|
- if (tx_list_head->status.status_word != 0)
|
|
|
- _tx_reclaim_skb();
|
|
|
-
|
|
|
- if (current_tx_ptr->next == tx_list_head) {
|
|
|
- while (tx_list_head->status.status_word == 0) {
|
|
|
- /* slow down polling to avoid too many queue stop. */
|
|
|
- udelay(10);
|
|
|
- /* reclaim skb if DMA is not running. */
|
|
|
- if (!(bfin_read_DMA2_IRQ_STATUS() & DMA_RUN))
|
|
|
- break;
|
|
|
- if (timeout_cnt-- < 0)
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- if (timeout_cnt >= 0)
|
|
|
- _tx_reclaim_skb();
|
|
|
- else
|
|
|
- netif_stop_queue(lp->ndev);
|
|
|
- }
|
|
|
-
|
|
|
- if (current_tx_ptr->next != tx_list_head &&
|
|
|
- netif_queue_stopped(lp->ndev))
|
|
|
- netif_wake_queue(lp->ndev);
|
|
|
-
|
|
|
- if (tx_list_head != current_tx_ptr) {
|
|
|
- /* shorten the timer interval if tx queue is stopped */
|
|
|
- if (netif_queue_stopped(lp->ndev))
|
|
|
- lp->tx_reclaim_timer.expires =
|
|
|
- jiffies + (TX_RECLAIM_JIFFIES >> 4);
|
|
|
- else
|
|
|
- lp->tx_reclaim_timer.expires =
|
|
|
- jiffies + TX_RECLAIM_JIFFIES;
|
|
|
-
|
|
|
- mod_timer(&lp->tx_reclaim_timer,
|
|
|
- lp->tx_reclaim_timer.expires);
|
|
|
- }
|
|
|
-
|
|
|
- return;
|
|
|
-}
|
|
|
-
|
|
|
-static void tx_reclaim_skb_timeout(struct timer_list *t)
|
|
|
-{
|
|
|
- struct bfin_mac_local *lp = from_timer(lp, t, tx_reclaim_timer);
|
|
|
-
|
|
|
- tx_reclaim_skb(lp);
|
|
|
-}
|
|
|
-
|
|
|
-static int bfin_mac_hard_start_xmit(struct sk_buff *skb,
|
|
|
- struct net_device *dev)
|
|
|
-{
|
|
|
- struct bfin_mac_local *lp = netdev_priv(dev);
|
|
|
- u16 *data;
|
|
|
- u32 data_align = (unsigned long)(skb->data) & 0x3;
|
|
|
-
|
|
|
- current_tx_ptr->skb = skb;
|
|
|
-
|
|
|
- if (data_align == 0x2) {
|
|
|
- /* move skb->data to current_tx_ptr payload */
|
|
|
- data = (u16 *)(skb->data) - 1;
|
|
|
- *data = (u16)(skb->len);
|
|
|
- /*
|
|
|
- * When transmitting an Ethernet packet, the PTP_TSYNC module requires
|
|
|
- * a DMA_Length_Word field associated with the packet. The lower 12 bits
|
|
|
- * of this field are the length of the packet payload in bytes and the higher
|
|
|
- * 4 bits are the timestamping enable field.
|
|
|
- */
|
|
|
- if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)
|
|
|
- *data |= 0x1000;
|
|
|
-
|
|
|
- current_tx_ptr->desc_a.start_addr = (u32)data;
|
|
|
- /* this is important! */
|
|
|
- blackfin_dcache_flush_range((u32)data,
|
|
|
- (u32)((u8 *)data + skb->len + 4));
|
|
|
- } else {
|
|
|
- *((u16 *)(current_tx_ptr->packet)) = (u16)(skb->len);
|
|
|
- /* enable timestamping for the sent packet */
|
|
|
- if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)
|
|
|
- *((u16 *)(current_tx_ptr->packet)) |= 0x1000;
|
|
|
- memcpy((u8 *)(current_tx_ptr->packet + 2), skb->data,
|
|
|
- skb->len);
|
|
|
- current_tx_ptr->desc_a.start_addr =
|
|
|
- (u32)current_tx_ptr->packet;
|
|
|
- blackfin_dcache_flush_range(
|
|
|
- (u32)current_tx_ptr->packet,
|
|
|
- (u32)(current_tx_ptr->packet + skb->len + 2));
|
|
|
- }
|
|
|
-
|
|
|
- /* make sure the internal data buffers in the core are drained
|
|
|
- * so that the DMA descriptors are completely written when the
|
|
|
- * DMA engine goes to fetch them below
|
|
|
- */
|
|
|
- SSYNC();
|
|
|
-
|
|
|
- /* always clear status buffer before start tx dma */
|
|
|
- current_tx_ptr->status.status_word = 0;
|
|
|
-
|
|
|
- /* enable this packet's dma */
|
|
|
- current_tx_ptr->desc_a.config |= DMAEN;
|
|
|
-
|
|
|
- /* tx dma is running, just return */
|
|
|
- if (bfin_read_DMA2_IRQ_STATUS() & DMA_RUN)
|
|
|
- goto out;
|
|
|
-
|
|
|
- /* tx dma is not running */
|
|
|
- bfin_write_DMA2_NEXT_DESC_PTR(&(current_tx_ptr->desc_a));
|
|
|
- /* dma enabled, read from memory, size is 6 */
|
|
|
- bfin_write_DMA2_CONFIG(current_tx_ptr->desc_a.config);
|
|
|
- /* Turn on the EMAC tx */
|
|
|
- bfin_write_EMAC_OPMODE(bfin_read_EMAC_OPMODE() | TE);
|
|
|
-
|
|
|
-out:
|
|
|
- bfin_tx_hwtstamp(dev, skb);
|
|
|
-
|
|
|
- current_tx_ptr = current_tx_ptr->next;
|
|
|
- dev->stats.tx_packets++;
|
|
|
- dev->stats.tx_bytes += (skb->len);
|
|
|
-
|
|
|
- tx_reclaim_skb(lp);
|
|
|
-
|
|
|
- return NETDEV_TX_OK;
|
|
|
-}
|
|
|
-
|
|
|
-#define IP_HEADER_OFF 0
|
|
|
-#define RX_ERROR_MASK (RX_LONG | RX_ALIGN | RX_CRC | RX_LEN | \
|
|
|
- RX_FRAG | RX_ADDR | RX_DMAO | RX_PHY | RX_LATE | RX_RANGE)
|
|
|
-
|
|
|
-static void bfin_mac_rx(struct bfin_mac_local *lp)
|
|
|
-{
|
|
|
- struct net_device *dev = lp->ndev;
|
|
|
- struct sk_buff *skb, *new_skb;
|
|
|
- unsigned short len;
|
|
|
-#if defined(BFIN_MAC_CSUM_OFFLOAD)
|
|
|
- unsigned int i;
|
|
|
- unsigned char fcs[ETH_FCS_LEN + 1];
|
|
|
-#endif
|
|
|
-
|
|
|
- /* check if frame status word reports an error condition
|
|
|
- * we which case we simply drop the packet
|
|
|
- */
|
|
|
- if (current_rx_ptr->status.status_word & RX_ERROR_MASK) {
|
|
|
- netdev_notice(dev, "rx: receive error - packet dropped\n");
|
|
|
- dev->stats.rx_dropped++;
|
|
|
- goto out;
|
|
|
- }
|
|
|
-
|
|
|
- /* allocate a new skb for next time receive */
|
|
|
- skb = current_rx_ptr->skb;
|
|
|
-
|
|
|
- new_skb = netdev_alloc_skb(dev, PKT_BUF_SZ + NET_IP_ALIGN);
|
|
|
- if (!new_skb) {
|
|
|
- dev->stats.rx_dropped++;
|
|
|
- goto out;
|
|
|
- }
|
|
|
- /* reserve 2 bytes for RXDWA padding */
|
|
|
- skb_reserve(new_skb, NET_IP_ALIGN);
|
|
|
- /* Invalidate the data cache of skb->data range when it is write back
|
|
|
- * cache. It will prevent overwriting the new data from DMA
|
|
|
- */
|
|
|
- blackfin_dcache_invalidate_range((unsigned long)new_skb->head,
|
|
|
- (unsigned long)new_skb->end);
|
|
|
-
|
|
|
- current_rx_ptr->skb = new_skb;
|
|
|
- current_rx_ptr->desc_a.start_addr = (unsigned long)new_skb->data - 2;
|
|
|
-
|
|
|
- len = (unsigned short)(current_rx_ptr->status.status_word & RX_FRLEN);
|
|
|
- /* Deduce Ethernet FCS length from Ethernet payload length */
|
|
|
- len -= ETH_FCS_LEN;
|
|
|
- skb_put(skb, len);
|
|
|
-
|
|
|
- skb->protocol = eth_type_trans(skb, dev);
|
|
|
-
|
|
|
- bfin_rx_hwtstamp(dev, skb);
|
|
|
-
|
|
|
-#if defined(BFIN_MAC_CSUM_OFFLOAD)
|
|
|
- /* Checksum offloading only works for IPv4 packets with the standard IP header
|
|
|
- * length of 20 bytes, because the blackfin MAC checksum calculation is
|
|
|
- * based on that assumption. We must NOT use the calculated checksum if our
|
|
|
- * IP version or header break that assumption.
|
|
|
- */
|
|
|
- if (skb->data[IP_HEADER_OFF] == 0x45) {
|
|
|
- skb->csum = current_rx_ptr->status.ip_payload_csum;
|
|
|
- /*
|
|
|
- * Deduce Ethernet FCS from hardware generated IP payload checksum.
|
|
|
- * IP checksum is based on 16-bit one's complement algorithm.
|
|
|
- * To deduce a value from checksum is equal to add its inversion.
|
|
|
- * If the IP payload len is odd, the inversed FCS should also
|
|
|
- * begin from odd address and leave first byte zero.
|
|
|
- */
|
|
|
- if (skb->len % 2) {
|
|
|
- fcs[0] = 0;
|
|
|
- for (i = 0; i < ETH_FCS_LEN; i++)
|
|
|
- fcs[i + 1] = ~skb->data[skb->len + i];
|
|
|
- skb->csum = csum_partial(fcs, ETH_FCS_LEN + 1, skb->csum);
|
|
|
- } else {
|
|
|
- for (i = 0; i < ETH_FCS_LEN; i++)
|
|
|
- fcs[i] = ~skb->data[skb->len + i];
|
|
|
- skb->csum = csum_partial(fcs, ETH_FCS_LEN, skb->csum);
|
|
|
- }
|
|
|
- skb->ip_summed = CHECKSUM_COMPLETE;
|
|
|
- }
|
|
|
-#endif
|
|
|
-
|
|
|
- napi_gro_receive(&lp->napi, skb);
|
|
|
-
|
|
|
- dev->stats.rx_packets++;
|
|
|
- dev->stats.rx_bytes += len;
|
|
|
-out:
|
|
|
- current_rx_ptr->status.status_word = 0x00000000;
|
|
|
- current_rx_ptr = current_rx_ptr->next;
|
|
|
-}
|
|
|
-
|
|
|
-static int bfin_mac_poll(struct napi_struct *napi, int budget)
|
|
|
-{
|
|
|
- int i = 0;
|
|
|
- struct bfin_mac_local *lp = container_of(napi,
|
|
|
- struct bfin_mac_local,
|
|
|
- napi);
|
|
|
-
|
|
|
- while (current_rx_ptr->status.status_word != 0 && i < budget) {
|
|
|
- bfin_mac_rx(lp);
|
|
|
- i++;
|
|
|
- }
|
|
|
-
|
|
|
- if (i < budget) {
|
|
|
- napi_complete_done(napi, i);
|
|
|
- if (test_and_clear_bit(BFIN_MAC_RX_IRQ_DISABLED, &lp->flags))
|
|
|
- enable_irq(IRQ_MAC_RX);
|
|
|
- }
|
|
|
-
|
|
|
- return i;
|
|
|
-}
|
|
|
-
|
|
|
-/* interrupt routine to handle rx and error signal */
|
|
|
-static irqreturn_t bfin_mac_interrupt(int irq, void *dev_id)
|
|
|
-{
|
|
|
- struct bfin_mac_local *lp = netdev_priv(dev_id);
|
|
|
- u32 status;
|
|
|
-
|
|
|
- status = bfin_read_DMA1_IRQ_STATUS();
|
|
|
-
|
|
|
- bfin_write_DMA1_IRQ_STATUS(status | DMA_DONE | DMA_ERR);
|
|
|
- if (status & DMA_DONE) {
|
|
|
- disable_irq_nosync(IRQ_MAC_RX);
|
|
|
- set_bit(BFIN_MAC_RX_IRQ_DISABLED, &lp->flags);
|
|
|
- napi_schedule(&lp->napi);
|
|
|
- }
|
|
|
-
|
|
|
- return IRQ_HANDLED;
|
|
|
-}
|
|
|
-
|
|
|
-#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
|
-static void bfin_mac_poll_controller(struct net_device *dev)
|
|
|
-{
|
|
|
- struct bfin_mac_local *lp = netdev_priv(dev);
|
|
|
-
|
|
|
- bfin_mac_interrupt(IRQ_MAC_RX, dev);
|
|
|
- tx_reclaim_skb(lp);
|
|
|
-}
|
|
|
-#endif /* CONFIG_NET_POLL_CONTROLLER */
|
|
|
-
|
|
|
-static void bfin_mac_disable(void)
|
|
|
-{
|
|
|
- unsigned int opmode;
|
|
|
-
|
|
|
- opmode = bfin_read_EMAC_OPMODE();
|
|
|
- opmode &= (~RE);
|
|
|
- opmode &= (~TE);
|
|
|
- /* Turn off the EMAC */
|
|
|
- bfin_write_EMAC_OPMODE(opmode);
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * Enable Interrupts, Receive, and Transmit
|
|
|
- */
|
|
|
-static int bfin_mac_enable(struct phy_device *phydev)
|
|
|
-{
|
|
|
- int ret;
|
|
|
- u32 opmode;
|
|
|
-
|
|
|
- pr_debug("%s\n", __func__);
|
|
|
-
|
|
|
- /* Set RX DMA */
|
|
|
- bfin_write_DMA1_NEXT_DESC_PTR(&(rx_list_head->desc_a));
|
|
|
- bfin_write_DMA1_CONFIG(rx_list_head->desc_a.config);
|
|
|
-
|
|
|
- /* Wait MII done */
|
|
|
- ret = bfin_mdio_poll();
|
|
|
- if (ret)
|
|
|
- return ret;
|
|
|
-
|
|
|
- /* We enable only RX here */
|
|
|
- /* ASTP : Enable Automatic Pad Stripping
|
|
|
- PR : Promiscuous Mode for test
|
|
|
- PSF : Receive frames with total length less than 64 bytes.
|
|
|
- FDMODE : Full Duplex Mode
|
|
|
- LB : Internal Loopback for test
|
|
|
- RE : Receiver Enable */
|
|
|
- opmode = bfin_read_EMAC_OPMODE();
|
|
|
- if (opmode & FDMODE)
|
|
|
- opmode |= PSF;
|
|
|
- else
|
|
|
- opmode |= DRO | DC | PSF;
|
|
|
- opmode |= RE;
|
|
|
-
|
|
|
- if (phydev->interface == PHY_INTERFACE_MODE_RMII) {
|
|
|
- opmode |= RMII; /* For Now only 100MBit are supported */
|
|
|
-#if defined(CONFIG_BF537) || defined(CONFIG_BF536)
|
|
|
- if (__SILICON_REVISION__ < 3) {
|
|
|
- /*
|
|
|
- * This isn't publicly documented (fun times!), but in
|
|
|
- * silicon <=0.2, the RX and TX pins are clocked together.
|
|
|
- * So in order to recv, we must enable the transmit side
|
|
|
- * as well. This will cause a spurious TX interrupt too,
|
|
|
- * but we can easily consume that.
|
|
|
- */
|
|
|
- opmode |= TE;
|
|
|
- }
|
|
|
-#endif
|
|
|
- }
|
|
|
-
|
|
|
- /* Turn on the EMAC rx */
|
|
|
- bfin_write_EMAC_OPMODE(opmode);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/* Our watchdog timed out. Called by the networking layer */
|
|
|
-static void bfin_mac_timeout(struct net_device *dev)
|
|
|
-{
|
|
|
- struct bfin_mac_local *lp = netdev_priv(dev);
|
|
|
-
|
|
|
- pr_debug("%s: %s\n", dev->name, __func__);
|
|
|
-
|
|
|
- bfin_mac_disable();
|
|
|
-
|
|
|
- del_timer(&lp->tx_reclaim_timer);
|
|
|
-
|
|
|
- /* reset tx queue and free skb */
|
|
|
- while (tx_list_head != current_tx_ptr) {
|
|
|
- tx_list_head->desc_a.config &= ~DMAEN;
|
|
|
- tx_list_head->status.status_word = 0;
|
|
|
- if (tx_list_head->skb) {
|
|
|
- dev_kfree_skb(tx_list_head->skb);
|
|
|
- tx_list_head->skb = NULL;
|
|
|
- }
|
|
|
- tx_list_head = tx_list_head->next;
|
|
|
- }
|
|
|
-
|
|
|
- if (netif_queue_stopped(dev))
|
|
|
- netif_wake_queue(dev);
|
|
|
-
|
|
|
- bfin_mac_enable(dev->phydev);
|
|
|
-
|
|
|
- /* We can accept TX packets again */
|
|
|
- netif_trans_update(dev); /* prevent tx timeout */
|
|
|
-}
|
|
|
-
|
|
|
-static void bfin_mac_multicast_hash(struct net_device *dev)
|
|
|
-{
|
|
|
- u32 emac_hashhi, emac_hashlo;
|
|
|
- struct netdev_hw_addr *ha;
|
|
|
- u32 crc;
|
|
|
-
|
|
|
- emac_hashhi = emac_hashlo = 0;
|
|
|
-
|
|
|
- netdev_for_each_mc_addr(ha, dev) {
|
|
|
- crc = ether_crc(ETH_ALEN, ha->addr);
|
|
|
- crc >>= 26;
|
|
|
-
|
|
|
- if (crc & 0x20)
|
|
|
- emac_hashhi |= 1 << (crc & 0x1f);
|
|
|
- else
|
|
|
- emac_hashlo |= 1 << (crc & 0x1f);
|
|
|
- }
|
|
|
-
|
|
|
- bfin_write_EMAC_HASHHI(emac_hashhi);
|
|
|
- bfin_write_EMAC_HASHLO(emac_hashlo);
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * This routine will, depending on the values passed to it,
|
|
|
- * either make it accept multicast packets, go into
|
|
|
- * promiscuous mode (for TCPDUMP and cousins) or accept
|
|
|
- * a select set of multicast packets
|
|
|
- */
|
|
|
-static void bfin_mac_set_multicast_list(struct net_device *dev)
|
|
|
-{
|
|
|
- u32 sysctl;
|
|
|
-
|
|
|
- if (dev->flags & IFF_PROMISC) {
|
|
|
- netdev_info(dev, "set promisc mode\n");
|
|
|
- sysctl = bfin_read_EMAC_OPMODE();
|
|
|
- sysctl |= PR;
|
|
|
- bfin_write_EMAC_OPMODE(sysctl);
|
|
|
- } else if (dev->flags & IFF_ALLMULTI) {
|
|
|
- /* accept all multicast */
|
|
|
- sysctl = bfin_read_EMAC_OPMODE();
|
|
|
- sysctl |= PAM;
|
|
|
- bfin_write_EMAC_OPMODE(sysctl);
|
|
|
- } else if (!netdev_mc_empty(dev)) {
|
|
|
- /* set up multicast hash table */
|
|
|
- sysctl = bfin_read_EMAC_OPMODE();
|
|
|
- sysctl |= HM;
|
|
|
- bfin_write_EMAC_OPMODE(sysctl);
|
|
|
- bfin_mac_multicast_hash(dev);
|
|
|
- } else {
|
|
|
- /* clear promisc or multicast mode */
|
|
|
- sysctl = bfin_read_EMAC_OPMODE();
|
|
|
- sysctl &= ~(RAF | PAM);
|
|
|
- bfin_write_EMAC_OPMODE(sysctl);
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-static int bfin_mac_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
|
|
|
-{
|
|
|
- if (!netif_running(netdev))
|
|
|
- return -EINVAL;
|
|
|
-
|
|
|
- switch (cmd) {
|
|
|
- case SIOCSHWTSTAMP:
|
|
|
- return bfin_mac_hwtstamp_set(netdev, ifr);
|
|
|
- case SIOCGHWTSTAMP:
|
|
|
- return bfin_mac_hwtstamp_get(netdev, ifr);
|
|
|
- default:
|
|
|
- if (netdev->phydev)
|
|
|
- return phy_mii_ioctl(netdev->phydev, ifr, cmd);
|
|
|
- else
|
|
|
- return -EOPNOTSUPP;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * this puts the device in an inactive state
|
|
|
- */
|
|
|
-static void bfin_mac_shutdown(struct net_device *dev)
|
|
|
-{
|
|
|
- /* Turn off the EMAC */
|
|
|
- bfin_write_EMAC_OPMODE(0x00000000);
|
|
|
- /* Turn off the EMAC RX DMA */
|
|
|
- bfin_write_DMA1_CONFIG(0x0000);
|
|
|
- bfin_write_DMA2_CONFIG(0x0000);
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * Open and Initialize the interface
|
|
|
- *
|
|
|
- * Set up everything, reset the card, etc..
|
|
|
- */
|
|
|
-static int bfin_mac_open(struct net_device *dev)
|
|
|
-{
|
|
|
- struct bfin_mac_local *lp = netdev_priv(dev);
|
|
|
- int ret;
|
|
|
- pr_debug("%s: %s\n", dev->name, __func__);
|
|
|
-
|
|
|
- /*
|
|
|
- * Check that the address is valid. If its not, refuse
|
|
|
- * to bring the device up. The user must specify an
|
|
|
- * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx
|
|
|
- */
|
|
|
- if (!is_valid_ether_addr(dev->dev_addr)) {
|
|
|
- netdev_warn(dev, "no valid ethernet hw addr\n");
|
|
|
- return -EINVAL;
|
|
|
- }
|
|
|
-
|
|
|
- /* initial rx and tx list */
|
|
|
- ret = desc_list_init(dev);
|
|
|
- if (ret)
|
|
|
- return ret;
|
|
|
-
|
|
|
- phy_start(dev->phydev);
|
|
|
- setup_system_regs(dev);
|
|
|
- setup_mac_addr(dev->dev_addr);
|
|
|
-
|
|
|
- bfin_mac_disable();
|
|
|
- ret = bfin_mac_enable(dev->phydev);
|
|
|
- if (ret)
|
|
|
- return ret;
|
|
|
- pr_debug("hardware init finished\n");
|
|
|
-
|
|
|
- napi_enable(&lp->napi);
|
|
|
- netif_start_queue(dev);
|
|
|
- netif_carrier_on(dev);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * this makes the board clean up everything that it can
|
|
|
- * and not talk to the outside world. Caused by
|
|
|
- * an 'ifconfig ethX down'
|
|
|
- */
|
|
|
-static int bfin_mac_close(struct net_device *dev)
|
|
|
-{
|
|
|
- struct bfin_mac_local *lp = netdev_priv(dev);
|
|
|
- pr_debug("%s: %s\n", dev->name, __func__);
|
|
|
-
|
|
|
- netif_stop_queue(dev);
|
|
|
- napi_disable(&lp->napi);
|
|
|
- netif_carrier_off(dev);
|
|
|
-
|
|
|
- phy_stop(dev->phydev);
|
|
|
- phy_write(dev->phydev, MII_BMCR, BMCR_PDOWN);
|
|
|
-
|
|
|
- /* clear everything */
|
|
|
- bfin_mac_shutdown(dev);
|
|
|
-
|
|
|
- /* free the rx/tx buffers */
|
|
|
- desc_list_free();
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static const struct net_device_ops bfin_mac_netdev_ops = {
|
|
|
- .ndo_open = bfin_mac_open,
|
|
|
- .ndo_stop = bfin_mac_close,
|
|
|
- .ndo_start_xmit = bfin_mac_hard_start_xmit,
|
|
|
- .ndo_set_mac_address = bfin_mac_set_mac_address,
|
|
|
- .ndo_tx_timeout = bfin_mac_timeout,
|
|
|
- .ndo_set_rx_mode = bfin_mac_set_multicast_list,
|
|
|
- .ndo_do_ioctl = bfin_mac_ioctl,
|
|
|
- .ndo_validate_addr = eth_validate_addr,
|
|
|
-#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
|
- .ndo_poll_controller = bfin_mac_poll_controller,
|
|
|
-#endif
|
|
|
-};
|
|
|
-
|
|
|
-static int bfin_mac_probe(struct platform_device *pdev)
|
|
|
-{
|
|
|
- struct net_device *ndev;
|
|
|
- struct bfin_mac_local *lp;
|
|
|
- struct platform_device *pd;
|
|
|
- struct bfin_mii_bus_platform_data *mii_bus_data;
|
|
|
- int rc;
|
|
|
-
|
|
|
- ndev = alloc_etherdev(sizeof(struct bfin_mac_local));
|
|
|
- if (!ndev)
|
|
|
- return -ENOMEM;
|
|
|
-
|
|
|
- SET_NETDEV_DEV(ndev, &pdev->dev);
|
|
|
- platform_set_drvdata(pdev, ndev);
|
|
|
- lp = netdev_priv(ndev);
|
|
|
- lp->ndev = ndev;
|
|
|
-
|
|
|
- /* Grab the MAC address in the MAC */
|
|
|
- *(__le32 *) (&(ndev->dev_addr[0])) = cpu_to_le32(bfin_read_EMAC_ADDRLO());
|
|
|
- *(__le16 *) (&(ndev->dev_addr[4])) = cpu_to_le16((u16) bfin_read_EMAC_ADDRHI());
|
|
|
-
|
|
|
- /* probe mac */
|
|
|
- /*todo: how to probe? which is revision_register */
|
|
|
- bfin_write_EMAC_ADDRLO(0x12345678);
|
|
|
- if (bfin_read_EMAC_ADDRLO() != 0x12345678) {
|
|
|
- dev_err(&pdev->dev, "Cannot detect Blackfin on-chip ethernet MAC controller!\n");
|
|
|
- rc = -ENODEV;
|
|
|
- goto out_err_probe_mac;
|
|
|
- }
|
|
|
-
|
|
|
-
|
|
|
- /*
|
|
|
- * Is it valid? (Did bootloader initialize it?)
|
|
|
- * Grab the MAC from the board somehow
|
|
|
- * this is done in the arch/blackfin/mach-bfxxx/boards/eth_mac.c
|
|
|
- */
|
|
|
- if (!is_valid_ether_addr(ndev->dev_addr)) {
|
|
|
- if (bfin_get_ether_addr(ndev->dev_addr) ||
|
|
|
- !is_valid_ether_addr(ndev->dev_addr)) {
|
|
|
- /* Still not valid, get a random one */
|
|
|
- netdev_warn(ndev, "Setting Ethernet MAC to a random one\n");
|
|
|
- eth_hw_addr_random(ndev);
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- setup_mac_addr(ndev->dev_addr);
|
|
|
-
|
|
|
- if (!dev_get_platdata(&pdev->dev)) {
|
|
|
- dev_err(&pdev->dev, "Cannot get platform device bfin_mii_bus!\n");
|
|
|
- rc = -ENODEV;
|
|
|
- goto out_err_probe_mac;
|
|
|
- }
|
|
|
- pd = dev_get_platdata(&pdev->dev);
|
|
|
- lp->mii_bus = platform_get_drvdata(pd);
|
|
|
- if (!lp->mii_bus) {
|
|
|
- dev_err(&pdev->dev, "Cannot get mii_bus!\n");
|
|
|
- rc = -ENODEV;
|
|
|
- goto out_err_probe_mac;
|
|
|
- }
|
|
|
- lp->mii_bus->priv = ndev;
|
|
|
- mii_bus_data = dev_get_platdata(&pd->dev);
|
|
|
-
|
|
|
- rc = mii_probe(ndev, mii_bus_data->phy_mode);
|
|
|
- if (rc) {
|
|
|
- dev_err(&pdev->dev, "MII Probe failed!\n");
|
|
|
- goto out_err_mii_probe;
|
|
|
- }
|
|
|
-
|
|
|
- lp->vlan1_mask = ETH_P_8021Q | mii_bus_data->vlan1_mask;
|
|
|
- lp->vlan2_mask = ETH_P_8021Q | mii_bus_data->vlan2_mask;
|
|
|
-
|
|
|
- ndev->netdev_ops = &bfin_mac_netdev_ops;
|
|
|
- ndev->ethtool_ops = &bfin_mac_ethtool_ops;
|
|
|
-
|
|
|
- timer_setup(&lp->tx_reclaim_timer, tx_reclaim_skb_timeout, 0);
|
|
|
-
|
|
|
- lp->flags = 0;
|
|
|
- netif_napi_add(ndev, &lp->napi, bfin_mac_poll, CONFIG_BFIN_RX_DESC_NUM);
|
|
|
-
|
|
|
- spin_lock_init(&lp->lock);
|
|
|
-
|
|
|
- /* now, enable interrupts */
|
|
|
- /* register irq handler */
|
|
|
- rc = request_irq(IRQ_MAC_RX, bfin_mac_interrupt,
|
|
|
- 0, "EMAC_RX", ndev);
|
|
|
- if (rc) {
|
|
|
- dev_err(&pdev->dev, "Cannot request Blackfin MAC RX IRQ!\n");
|
|
|
- rc = -EBUSY;
|
|
|
- goto out_err_request_irq;
|
|
|
- }
|
|
|
-
|
|
|
- rc = register_netdev(ndev);
|
|
|
- if (rc) {
|
|
|
- dev_err(&pdev->dev, "Cannot register net device!\n");
|
|
|
- goto out_err_reg_ndev;
|
|
|
- }
|
|
|
-
|
|
|
- bfin_mac_hwtstamp_init(ndev);
|
|
|
- rc = bfin_phc_init(ndev, &pdev->dev);
|
|
|
- if (rc) {
|
|
|
- dev_err(&pdev->dev, "Cannot register PHC device!\n");
|
|
|
- goto out_err_phc;
|
|
|
- }
|
|
|
-
|
|
|
- /* now, print out the card info, in a short format.. */
|
|
|
- netdev_info(ndev, "%s, Version %s\n", DRV_DESC, DRV_VERSION);
|
|
|
-
|
|
|
- return 0;
|
|
|
-
|
|
|
-out_err_phc:
|
|
|
-out_err_reg_ndev:
|
|
|
- free_irq(IRQ_MAC_RX, ndev);
|
|
|
-out_err_request_irq:
|
|
|
- netif_napi_del(&lp->napi);
|
|
|
-out_err_mii_probe:
|
|
|
- mdiobus_unregister(lp->mii_bus);
|
|
|
- mdiobus_free(lp->mii_bus);
|
|
|
-out_err_probe_mac:
|
|
|
- free_netdev(ndev);
|
|
|
-
|
|
|
- return rc;
|
|
|
-}
|
|
|
-
|
|
|
-static int bfin_mac_remove(struct platform_device *pdev)
|
|
|
-{
|
|
|
- struct net_device *ndev = platform_get_drvdata(pdev);
|
|
|
- struct bfin_mac_local *lp = netdev_priv(ndev);
|
|
|
-
|
|
|
- bfin_phc_release(lp);
|
|
|
-
|
|
|
- lp->mii_bus->priv = NULL;
|
|
|
-
|
|
|
- unregister_netdev(ndev);
|
|
|
-
|
|
|
- netif_napi_del(&lp->napi);
|
|
|
-
|
|
|
- free_irq(IRQ_MAC_RX, ndev);
|
|
|
-
|
|
|
- free_netdev(ndev);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-#ifdef CONFIG_PM
|
|
|
-static int bfin_mac_suspend(struct platform_device *pdev, pm_message_t mesg)
|
|
|
-{
|
|
|
- struct net_device *net_dev = platform_get_drvdata(pdev);
|
|
|
- struct bfin_mac_local *lp = netdev_priv(net_dev);
|
|
|
-
|
|
|
- if (lp->wol) {
|
|
|
- bfin_write_EMAC_OPMODE((bfin_read_EMAC_OPMODE() & ~TE) | RE);
|
|
|
- bfin_write_EMAC_WKUP_CTL(MPKE);
|
|
|
- enable_irq_wake(IRQ_MAC_WAKEDET);
|
|
|
- } else {
|
|
|
- if (netif_running(net_dev))
|
|
|
- bfin_mac_close(net_dev);
|
|
|
- }
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static int bfin_mac_resume(struct platform_device *pdev)
|
|
|
-{
|
|
|
- struct net_device *net_dev = platform_get_drvdata(pdev);
|
|
|
- struct bfin_mac_local *lp = netdev_priv(net_dev);
|
|
|
-
|
|
|
- if (lp->wol) {
|
|
|
- bfin_write_EMAC_OPMODE(bfin_read_EMAC_OPMODE() | TE);
|
|
|
- bfin_write_EMAC_WKUP_CTL(0);
|
|
|
- disable_irq_wake(IRQ_MAC_WAKEDET);
|
|
|
- } else {
|
|
|
- if (netif_running(net_dev))
|
|
|
- bfin_mac_open(net_dev);
|
|
|
- }
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-#else
|
|
|
-#define bfin_mac_suspend NULL
|
|
|
-#define bfin_mac_resume NULL
|
|
|
-#endif /* CONFIG_PM */
|
|
|
-
|
|
|
-static int bfin_mii_bus_probe(struct platform_device *pdev)
|
|
|
-{
|
|
|
- struct mii_bus *miibus;
|
|
|
- struct bfin_mii_bus_platform_data *mii_bus_pd;
|
|
|
- const unsigned short *pin_req;
|
|
|
- int rc, i;
|
|
|
-
|
|
|
- mii_bus_pd = dev_get_platdata(&pdev->dev);
|
|
|
- if (!mii_bus_pd) {
|
|
|
- dev_err(&pdev->dev, "No peripherals in platform data!\n");
|
|
|
- return -EINVAL;
|
|
|
- }
|
|
|
-
|
|
|
- /*
|
|
|
- * We are setting up a network card,
|
|
|
- * so set the GPIO pins to Ethernet mode
|
|
|
- */
|
|
|
- pin_req = mii_bus_pd->mac_peripherals;
|
|
|
- rc = peripheral_request_list(pin_req, KBUILD_MODNAME);
|
|
|
- if (rc) {
|
|
|
- dev_err(&pdev->dev, "Requesting peripherals failed!\n");
|
|
|
- return rc;
|
|
|
- }
|
|
|
-
|
|
|
- rc = -ENOMEM;
|
|
|
- miibus = mdiobus_alloc();
|
|
|
- if (miibus == NULL)
|
|
|
- goto out_err_alloc;
|
|
|
- miibus->read = bfin_mdiobus_read;
|
|
|
- miibus->write = bfin_mdiobus_write;
|
|
|
-
|
|
|
- miibus->parent = &pdev->dev;
|
|
|
- miibus->name = "bfin_mii_bus";
|
|
|
- miibus->phy_mask = mii_bus_pd->phy_mask;
|
|
|
-
|
|
|
- snprintf(miibus->id, MII_BUS_ID_SIZE, "%s-%x",
|
|
|
- pdev->name, pdev->id);
|
|
|
-
|
|
|
- rc = clamp(mii_bus_pd->phydev_number, 0, PHY_MAX_ADDR);
|
|
|
- if (rc != mii_bus_pd->phydev_number)
|
|
|
- dev_err(&pdev->dev, "Invalid number (%i) of phydevs\n",
|
|
|
- mii_bus_pd->phydev_number);
|
|
|
- for (i = 0; i < rc; ++i) {
|
|
|
- unsigned short phyaddr = mii_bus_pd->phydev_data[i].addr;
|
|
|
- if (phyaddr < PHY_MAX_ADDR)
|
|
|
- miibus->irq[phyaddr] = mii_bus_pd->phydev_data[i].irq;
|
|
|
- else
|
|
|
- dev_err(&pdev->dev,
|
|
|
- "Invalid PHY address %i for phydev %i\n",
|
|
|
- phyaddr, i);
|
|
|
- }
|
|
|
-
|
|
|
- rc = mdiobus_register(miibus);
|
|
|
- if (rc) {
|
|
|
- dev_err(&pdev->dev, "Cannot register MDIO bus!\n");
|
|
|
- goto out_err_irq_alloc;
|
|
|
- }
|
|
|
-
|
|
|
- platform_set_drvdata(pdev, miibus);
|
|
|
- return 0;
|
|
|
-
|
|
|
-out_err_irq_alloc:
|
|
|
- mdiobus_free(miibus);
|
|
|
-out_err_alloc:
|
|
|
- peripheral_free_list(pin_req);
|
|
|
-
|
|
|
- return rc;
|
|
|
-}
|
|
|
-
|
|
|
-static int bfin_mii_bus_remove(struct platform_device *pdev)
|
|
|
-{
|
|
|
- struct mii_bus *miibus = platform_get_drvdata(pdev);
|
|
|
- struct bfin_mii_bus_platform_data *mii_bus_pd =
|
|
|
- dev_get_platdata(&pdev->dev);
|
|
|
-
|
|
|
- mdiobus_unregister(miibus);
|
|
|
- mdiobus_free(miibus);
|
|
|
- peripheral_free_list(mii_bus_pd->mac_peripherals);
|
|
|
-
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-static struct platform_driver bfin_mii_bus_driver = {
|
|
|
- .probe = bfin_mii_bus_probe,
|
|
|
- .remove = bfin_mii_bus_remove,
|
|
|
- .driver = {
|
|
|
- .name = "bfin_mii_bus",
|
|
|
- },
|
|
|
-};
|
|
|
-
|
|
|
-static struct platform_driver bfin_mac_driver = {
|
|
|
- .probe = bfin_mac_probe,
|
|
|
- .remove = bfin_mac_remove,
|
|
|
- .resume = bfin_mac_resume,
|
|
|
- .suspend = bfin_mac_suspend,
|
|
|
- .driver = {
|
|
|
- .name = KBUILD_MODNAME,
|
|
|
- },
|
|
|
-};
|
|
|
-
|
|
|
-static struct platform_driver * const drivers[] = {
|
|
|
- &bfin_mii_bus_driver,
|
|
|
- &bfin_mac_driver,
|
|
|
-};
|
|
|
-
|
|
|
-static int __init bfin_mac_init(void)
|
|
|
-{
|
|
|
- return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
|
|
|
-}
|
|
|
-
|
|
|
-module_init(bfin_mac_init);
|
|
|
-
|
|
|
-static void __exit bfin_mac_cleanup(void)
|
|
|
-{
|
|
|
- platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
|
|
|
-}
|
|
|
-
|
|
|
-module_exit(bfin_mac_cleanup);
|
|
|
-
|