diff options
Diffstat (limited to 'drivers/net/mv643xx_eth.c')
| -rw-r--r-- | drivers/net/mv643xx_eth.c | 2697 |
1 files changed, 0 insertions, 2697 deletions
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c deleted file mode 100644 index 0a18b9e96da..00000000000 --- a/drivers/net/mv643xx_eth.c +++ /dev/null @@ -1,2697 +0,0 @@ -/* - * Driver for Marvell Discovery (MV643XX) and Marvell Orion ethernet ports - * Copyright (C) 2002 Matthew Dharm <mdharm@momenco.com> - * - * Based on the 64360 driver from: - * Copyright (C) 2002 Rabeeh Khoury <rabeeh@galileo.co.il> - * Rabeeh Khoury <rabeeh@marvell.com> - * - * Copyright (C) 2003 PMC-Sierra, Inc., - * written by Manish Lachwani - * - * Copyright (C) 2003 Ralf Baechle <ralf@linux-mips.org> - * - * Copyright (C) 2004-2006 MontaVista Software, Inc. - * Dale Farnsworth <dale@farnsworth.org> - * - * Copyright (C) 2004 Steven J. Hill <sjhill1@rockwellcollins.com> - * <sjhill@realitydiluted.com> - * - * Copyright (C) 2007-2008 Marvell Semiconductor - * Lennert Buytenhek <buytenh@marvell.com> - * - * 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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -#include <linux/init.h> -#include <linux/dma-mapping.h> -#include <linux/in.h> -#include <linux/tcp.h> -#include <linux/udp.h> -#include <linux/etherdevice.h> -#include <linux/delay.h> -#include <linux/ethtool.h> -#include <linux/platform_device.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/spinlock.h> -#include <linux/workqueue.h> -#include <linux/mii.h> -#include <linux/mv643xx_eth.h> -#include <asm/io.h> -#include <asm/types.h> -#include <asm/system.h> - -static char mv643xx_eth_driver_name[] = "mv643xx_eth"; -static char mv643xx_eth_driver_version[] = "1.3"; - -#define MV643XX_ETH_CHECKSUM_OFFLOAD_TX -#define MV643XX_ETH_NAPI -#define MV643XX_ETH_TX_FAST_REFILL - -#ifdef MV643XX_ETH_CHECKSUM_OFFLOAD_TX -#define MAX_DESCS_PER_SKB (MAX_SKB_FRAGS + 1) -#else -#define MAX_DESCS_PER_SKB 1 -#endif - -/* - * Registers shared between all ports. - */ -#define PHY_ADDR 0x0000 -#define SMI_REG 0x0004 -#define WINDOW_BASE(w) (0x0200 + ((w) << 3)) -#define WINDOW_SIZE(w) (0x0204 + ((w) << 3)) -#define WINDOW_REMAP_HIGH(w) (0x0280 + ((w) << 2)) -#define WINDOW_BAR_ENABLE 0x0290 -#define WINDOW_PROTECT(w) (0x0294 + ((w) << 4)) - -/* - * Per-port registers. - */ -#define PORT_CONFIG(p) (0x0400 + ((p) << 10)) -#define UNICAST_PROMISCUOUS_MODE 0x00000001 -#define PORT_CONFIG_EXT(p) (0x0404 + ((p) << 10)) -#define MAC_ADDR_LOW(p) (0x0414 + ((p) << 10)) -#define MAC_ADDR_HIGH(p) (0x0418 + ((p) << 10)) -#define SDMA_CONFIG(p) (0x041c + ((p) << 10)) -#define PORT_SERIAL_CONTROL(p) (0x043c + ((p) << 10)) -#define PORT_STATUS(p) (0x0444 + ((p) << 10)) -#define TX_FIFO_EMPTY 0x00000400 -#define TX_IN_PROGRESS 0x00000080 -#define PORT_SPEED_MASK 0x00000030 -#define PORT_SPEED_1000 0x00000010 -#define PORT_SPEED_100 0x00000020 -#define PORT_SPEED_10 0x00000000 -#define FLOW_CONTROL_ENABLED 0x00000008 -#define FULL_DUPLEX 0x00000004 -#define LINK_UP 0x00000002 -#define TXQ_COMMAND(p) (0x0448 + ((p) << 10)) -#define TXQ_FIX_PRIO_CONF(p) (0x044c + ((p) << 10)) -#define TX_BW_RATE(p) (0x0450 + ((p) << 10)) -#define TX_BW_MTU(p) (0x0458 + ((p) << 10)) -#define TX_BW_BURST(p) (0x045c + ((p) << 10)) -#define INT_CAUSE(p) (0x0460 + ((p) << 10)) -#define INT_TX_END_0 0x00080000 -#define INT_TX_END 0x07f80000 -#define INT_RX 0x0007fbfc -#define INT_EXT 0x00000002 -#define INT_CAUSE_EXT(p) (0x0464 + ((p) << 10)) -#define INT_EXT_LINK 0x00100000 -#define INT_EXT_PHY 0x00010000 -#define INT_EXT_TX_ERROR_0 0x00000100 -#define INT_EXT_TX_0 0x00000001 -#define INT_EXT_TX 0x0000ffff -#define INT_MASK(p) (0x0468 + ((p) << 10)) -#define INT_MASK_EXT(p) (0x046c + ((p) << 10)) -#define TX_FIFO_URGENT_THRESHOLD(p) (0x0474 + ((p) << 10)) -#define TXQ_FIX_PRIO_CONF_MOVED(p) (0x04dc + ((p) << 10)) -#define TX_BW_RATE_MOVED(p) (0x04e0 + ((p) << 10)) -#define TX_BW_MTU_MOVED(p) (0x04e8 + ((p) << 10)) -#define TX_BW_BURST_MOVED(p) (0x04ec + ((p) << 10)) -#define RXQ_CURRENT_DESC_PTR(p, q) (0x060c + ((p) << 10) + ((q) << 4)) -#define RXQ_COMMAND(p) (0x0680 + ((p) << 10)) -#define TXQ_CURRENT_DESC_PTR(p, q) (0x06c0 + ((p) << 10) + ((q) << 2)) -#define TXQ_BW_TOKENS(p, q) (0x0700 + ((p) << 10) + ((q) << 4)) -#define TXQ_BW_CONF(p, q) (0x0704 + ((p) << 10) + ((q) << 4)) -#define TXQ_BW_WRR_CONF(p, q) (0x0708 + ((p) << 10) + ((q) << 4)) -#define MIB_COUNTERS(p) (0x1000 + ((p) << 7)) -#define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10)) -#define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10)) -#define UNICAST_TABLE(p) (0x1600 + ((p) << 10)) - - -/* - * SDMA configuration register. - */ -#define RX_BURST_SIZE_16_64BIT (4 << 1) -#define BLM_RX_NO_SWAP (1 << 4) -#define BLM_TX_NO_SWAP (1 << 5) -#define TX_BURST_SIZE_16_64BIT (4 << 22) - -#if defined(__BIG_ENDIAN) -#define PORT_SDMA_CONFIG_DEFAULT_VALUE \ - RX_BURST_SIZE_16_64BIT | \ - TX_BURST_SIZE_16_64BIT -#elif defined(__LITTLE_ENDIAN) -#define PORT_SDMA_CONFIG_DEFAULT_VALUE \ - RX_BURST_SIZE_16_64BIT | \ - BLM_RX_NO_SWAP | \ - BLM_TX_NO_SWAP | \ - TX_BURST_SIZE_16_64BIT -#else -#error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined -#endif - - -/* - * Port serial control register. - */ -#define SET_MII_SPEED_TO_100 (1 << 24) -#define SET_GMII_SPEED_TO_1000 (1 << 23) -#define SET_FULL_DUPLEX_MODE (1 << 21) -#define MAX_RX_PACKET_9700BYTE (5 << 17) -#define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13) -#define DO_NOT_FORCE_LINK_FAIL (1 << 10) -#define SERIAL_PORT_CONTROL_RESERVED (1 << 9) -#define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3) -#define DISABLE_AUTO_NEG_FOR_DUPLEX (1 << 2) -#define FORCE_LINK_PASS (1 << 1) -#define SERIAL_PORT_ENABLE (1 << 0) - -#define DEFAULT_RX_QUEUE_SIZE 400 -#define DEFAULT_TX_QUEUE_SIZE 800 - - -/* - * RX/TX descriptors. - */ -#if defined(__BIG_ENDIAN) -struct rx_desc { - u16 byte_cnt; /* Descriptor buffer byte count */ - u16 buf_size; /* Buffer size */ - u32 cmd_sts; /* Descriptor command status */ - u32 next_desc_ptr; /* Next descriptor pointer */ - u32 buf_ptr; /* Descriptor buffer pointer */ -}; - -struct tx_desc { - u16 byte_cnt; /* buffer byte count */ - u16 l4i_chk; /* CPU provided TCP checksum */ - u32 cmd_sts; /* Command/status field */ - u32 next_desc_ptr; /* Pointer to next descriptor */ - u32 buf_ptr; /* pointer to buffer for this descriptor*/ -}; -#elif defined(__LITTLE_ENDIAN) -struct rx_desc { - u32 cmd_sts; /* Descriptor command status */ - u16 buf_size; /* Buffer size */ - u16 byte_cnt; /* Descriptor buffer byte count */ - u32 buf_ptr; /* Descriptor buffer pointer */ - u32 next_desc_ptr; /* Next descriptor pointer */ -}; - -struct tx_desc { - u32 cmd_sts; /* Command/status field */ - u16 l4i_chk; /* CPU provided TCP checksum */ - u16 byte_cnt; /* buffer byte count */ - u32 buf_ptr; /* pointer to buffer for this descriptor*/ - u32 next_desc_ptr; /* Pointer to next descriptor */ -}; -#else -#error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined -#endif - -/* RX & TX descriptor command */ -#define BUFFER_OWNED_BY_DMA 0x80000000 - -/* RX & TX descriptor status */ -#define ERROR_SUMMARY 0x00000001 - -/* RX descriptor status */ -#define LAYER_4_CHECKSUM_OK 0x40000000 -#define RX_ENABLE_INTERRUPT 0x20000000 -#define RX_FIRST_DESC 0x08000000 -#define RX_LAST_DESC 0x04000000 - -/* TX descriptor command */ -#define TX_ENABLE_INTERRUPT 0x00800000 -#define GEN_CRC 0x00400000 -#define TX_FIRST_DESC 0x00200000 -#define TX_LAST_DESC 0x00100000 -#define ZERO_PADDING 0x00080000 -#define GEN_IP_V4_CHECKSUM 0x00040000 -#define GEN_TCP_UDP_CHECKSUM 0x00020000 -#define UDP_FRAME 0x00010000 -#define MAC_HDR_EXTRA_4_BYTES 0x00008000 -#define MAC_HDR_EXTRA_8_BYTES 0x00000200 - -#define TX_IHL_SHIFT 11 - - -/* global *******************************************************************/ -struct mv643xx_eth_shared_private { - /* - * Ethernet controller base address. - */ - void __iomem *base; - - /* - * Protects access to SMI_REG, which is shared between ports. - */ - spinlock_t phy_lock; - - /* - * Per-port MBUS window access register value. - */ - u32 win_protect; - - /* - * Hardware-specific parameters. - */ - unsigned int t_clk; - int extended_rx_coal_limit; - int tx_bw_control_moved; -}; - - -/* per-port *****************************************************************/ -struct mib_counters { - u64 good_octets_received; - u32 bad_octets_received; - u32 internal_mac_transmit_err; - u32 good_frames_received; - u32 bad_frames_received; - u32 broadcast_frames_received; - u32 multicast_frames_received; - u32 frames_64_octets; - u32 frames_65_to_127_octets; - u32 frames_128_to_255_octets; - u32 frames_256_to_511_octets; - u32 frames_512_to_1023_octets; - u32 frames_1024_to_max_octets; - u64 good_octets_sent; - u32 good_frames_sent; - u32 excessive_collision; - u32 multicast_frames_sent; - u32 broadcast_frames_sent; - u32 unrec_mac_control_received; - u32 fc_sent; - u32 good_fc_received; - u32 bad_fc_received; - u32 undersize_received; - u32 fragments_received; - u32 oversize_received; - u32 jabber_received; - u32 mac_receive_error; - u32 bad_crc_event; - u32 collision; - u32 late_collision; -}; - -struct rx_queue { - int index; - - int rx_ring_size; - - int rx_desc_count; - int rx_curr_desc; - int rx_used_desc; - - struct rx_desc *rx_desc_area; - dma_addr_t rx_desc_dma; - int rx_desc_area_size; - struct sk_buff **rx_skb; - - struct timer_list rx_oom; -}; - -struct tx_queue { - int index; - - int tx_ring_size; - - int tx_desc_count; - int tx_curr_desc; - int tx_used_desc; - - struct tx_desc *tx_desc_area; - dma_addr_t tx_desc_dma; - int tx_desc_area_size; - struct sk_buff **tx_skb; -}; - -struct mv643xx_eth_private { - struct mv643xx_eth_shared_private *shared; - int port_num; - - struct net_device *dev; - - struct mv643xx_eth_shared_private *shared_smi; - int phy_addr; - - spinlock_t lock; - - struct mib_counters mib_counters; - struct work_struct tx_timeout_task; - struct mii_if_info mii; - - /* - * RX state. - */ - int default_rx_ring_size; - unsigned long rx_desc_sram_addr; - int rx_desc_sram_size; - u8 rxq_mask; - int rxq_primary; - struct napi_struct napi; - struct rx_queue rxq[8]; - - /* - * TX state. - */ - int default_tx_ring_size; - unsigned long tx_desc_sram_addr; - int tx_desc_sram_size; - u8 txq_mask; - int txq_primary; - struct tx_queue txq[8]; -#ifdef MV643XX_ETH_TX_FAST_REFILL - int tx_clean_threshold; -#endif -}; - - -/* port register accessors **************************************************/ -static inline u32 rdl(struct mv643xx_eth_private *mp, int offset) -{ - return readl(mp->shared->base + offset); -} - -static inline void wrl(struct mv643xx_eth_private *mp, int offset, u32 data) -{ - writel(data, mp->shared->base + offset); -} - - -/* rxq/txq helper functions *************************************************/ -static struct mv643xx_eth_private *rxq_to_mp(struct rx_queue *rxq) -{ - return container_of(rxq, struct mv643xx_eth_private, rxq[rxq->index]); -} - -static struct mv643xx_eth_private *txq_to_mp(struct tx_queue *txq) -{ - return container_of(txq, struct mv643xx_eth_private, txq[txq->index]); -} - -static void rxq_enable(struct rx_queue *rxq) -{ - struct mv643xx_eth_private *mp = rxq_to_mp(rxq); - wrl(mp, RXQ_COMMAND(mp->port_num), 1 << rxq->index); -} - -static void rxq_disable(struct rx_queue *rxq) -{ - struct mv643xx_eth_private *mp = rxq_to_mp(rxq); - u8 mask = 1 << rxq->index; - - wrl(mp, RXQ_COMMAND(mp->port_num), mask << 8); - while (rdl(mp, RXQ_COMMAND(mp->port_num)) & mask) - udelay(10); -} - -static void txq_reset_hw_ptr(struct tx_queue *txq) -{ - struct mv643xx_eth_private *mp = txq_to_mp(txq); - int off = TXQ_CURRENT_DESC_PTR(mp->port_num, txq->index); - u32 addr; - - addr = (u32)txq->tx_desc_dma; - addr += txq->tx_curr_desc * sizeof(struct tx_desc); - wrl(mp, off, addr); -} - -static void txq_enable(struct tx_queue *txq) -{ - struct mv643xx_eth_private *mp = txq_to_mp(txq); - wrl(mp, TXQ_COMMAND(mp->port_num), 1 << txq->index); -} - -static void txq_disable(struct tx_queue *txq) -{ - struct mv643xx_eth_private *mp = txq_to_mp(txq); - u8 mask = 1 << txq->index; - - wrl(mp, TXQ_COMMAND(mp->port_num), mask << 8); - while (rdl(mp, TXQ_COMMAND(mp->port_num)) & mask) - udelay(10); -} - -static void __txq_maybe_wake(struct tx_queue *txq) -{ - struct mv643xx_eth_private *mp = txq_to_mp(txq); - - /* - * netif_{stop,wake}_queue() flow control only applies to - * the primary queue. - */ - BUG_ON(txq->index != mp->txq_primary); - - if (txq->tx_ring_size - txq->tx_desc_count >= MAX_DESCS_PER_SKB) - netif_wake_queue(mp->dev); -} - - -/* rx ***********************************************************************/ -static void txq_reclaim(struct tx_queue *txq, int force); - -static void rxq_refill(struct rx_queue *rxq) -{ - struct mv643xx_eth_private *mp = rxq_to_mp(rxq); - unsigned long flags; - - spin_lock_irqsave(&mp->lock, flags); - - while (rxq->rx_desc_count < rxq->rx_ring_size) { - int skb_size; - struct sk_buff *skb; - int unaligned; - int rx; - - /* - * Reserve 2+14 bytes for an ethernet header (the - * hardware automatically prepends 2 bytes of dummy - * data to each received packet), 16 bytes for up to - * four VLAN tags, and 4 bytes for the trailing FCS - * -- 36 bytes total. - */ - skb_size = mp->dev->mtu + 36; - - /* - * Make sure that the skb size is a multiple of 8 - * bytes, as the lower three bits of the receive - * descriptor's buffer size field are ignored by - * the hardware. - */ - skb_size = (skb_size + 7) & ~7; - - skb = dev_alloc_skb(skb_size + dma_get_cache_alignment() - 1); - if (skb == NULL) - break; - - unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1); - if (unaligned) - skb_reserve(skb, dma_get_cache_alignment() - unaligned); - - rxq->rx_desc_count++; - rx = rxq->rx_used_desc; - rxq->rx_used_desc = (rx + 1) % rxq->rx_ring_size; - - rxq->rx_desc_area[rx].buf_ptr = dma_map_single(NULL, skb->data, - skb_size, DMA_FROM_DEVICE); - rxq->rx_desc_area[rx].buf_size = skb_size; - rxq->rx_skb[rx] = skb; - wmb(); - rxq->rx_desc_area[rx].cmd_sts = BUFFER_OWNED_BY_DMA | - RX_ENABLE_INTERRUPT; - wmb(); - - /* - * The hardware automatically prepends 2 bytes of - * dummy data to each received packet, so that the - * IP header ends up 16-byte aligned. - */ - skb_reserve(skb, 2); - } - - if (rxq->rx_desc_count != rxq->rx_ring_size) - mod_timer(&rxq->rx_oom, jiffies + (HZ / 10)); - - spin_unlock_irqrestore(&mp->lock, flags); -} - -static inline void rxq_refill_timer_wrapper(unsigned long data) -{ - rxq_refill((struct rx_queue *)data); -} - -static int rxq_process(struct rx_queue *rxq, int budget) -{ - struct mv643xx_eth_private *mp = rxq_to_mp(rxq); - struct net_device_stats *stats = &mp->dev->stats; - int rx; - - rx = 0; - while (rx < budget && rxq->rx_desc_count) { - struct rx_desc *rx_desc; - unsigned int cmd_sts; - struct sk_buff *skb; - unsigned long flags; - - spin_lock_irqsave(&mp->lock, flags); - - rx_desc = &rxq->rx_desc_area[rxq->rx_curr_desc]; - - cmd_sts = rx_desc->cmd_sts; - if (cmd_sts & BUFFER_OWNED_BY_DMA) { - spin_unlock_irqrestore(&mp->lock, flags); - break; - } - rmb(); - - skb = rxq->rx_skb[rxq->rx_curr_desc]; - rxq->rx_skb[rxq->rx_curr_desc] = NULL; - - rxq->rx_curr_desc = (rxq->rx_curr_desc + 1) % rxq->rx_ring_size; - - spin_unlock_irqrestore(&mp->lock, flags); - - dma_unmap_single(NULL, rx_desc->buf_ptr + 2, - rx_desc->buf_size, DMA_FROM_DEVICE); - rxq->rx_desc_count--; - rx++; - - /* - * Update statistics. - * - * Note that the descriptor byte count includes 2 dummy - * bytes automatically inserted by the hardware at the - * start of the packet (which we don't count), and a 4 - * byte CRC at the end of the packet (which we do count). - */ - stats->rx_packets++; - stats->rx_bytes += rx_desc->byte_cnt - 2; - - /* - * In case we received a packet without first / last bits - * on, or the error summary bit is set, the packet needs - * to be dropped. - */ - if (((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) != - (RX_FIRST_DESC | RX_LAST_DESC)) - || (cmd_sts & ERROR_SUMMARY)) { - stats->rx_dropped++; - - if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) != - (RX_FIRST_DESC | RX_LAST_DESC)) { - if (net_ratelimit()) - dev_printk(KERN_ERR, &mp->dev->dev, - "received packet spanning " - "multiple descriptors\n"); - } - - if (cmd_sts & ERROR_SUMMARY) - stats->rx_errors++; - - dev_kfree_skb_irq(skb); - } else { - /* - * The -4 is for the CRC in the trailer of the - * received packet - */ - skb_put(skb, rx_desc->byte_cnt - 2 - 4); - - if (cmd_sts & LAYER_4_CHECKSUM_OK) { - skb->ip_summed = CHECKSUM_UNNECESSARY; - skb->csum = htons( - (cmd_sts & 0x0007fff8) >> 3); - } - skb->protocol = eth_type_trans(skb, mp->dev); -#ifdef MV643XX_ETH_NAPI - netif_receive_skb(skb); -#else - netif_rx(skb); -#endif - } - - mp->dev->last_rx = jiffies; - } - - rxq_refill(rxq); - - return rx; -} - -#ifdef MV643XX_ETH_NAPI -static int mv643xx_eth_poll(struct napi_struct *napi, int budget) -{ - struct mv643xx_eth_private *mp; - int rx; - int i; - - mp = container_of(napi, struct mv643xx_eth_private, napi); - -#ifdef MV643XX_ETH_TX_FAST_REFILL - if (++mp->tx_clean_threshold > 5) { - mp->tx_clean_threshold = 0; - for (i = 0; i < 8; i++) - if (mp->txq_mask & (1 << i)) - txq_reclaim(mp->txq + i, 0); - - if (netif_carrier_ok(mp->dev)) { - spin_lock_irq(&mp->lock); - __txq_maybe_wake(mp->txq + mp->txq_primary); - spin_unlock_irq(&mp->lock); - } - } -#endif - - rx = 0; - for (i = 7; rx < budget && i >= 0; i--) - if (mp->rxq_mask & (1 << i)) - rx += rxq_process(mp->rxq + i, budget - rx); - - if (rx < budget) { - netif_rx_complete(mp->dev, napi); - wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT); - } - - return rx; -} -#endif - - -/* tx ***********************************************************************/ -static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb) -{ - int frag; - - for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) { - skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag]; - if (fragp->size <= 8 && fragp->page_offset & 7) - return 1; - } - - return 0; -} - -static int txq_alloc_desc_index(struct tx_queue *txq) -{ - int tx_desc_curr; - - BUG_ON(txq->tx_desc_count >= txq->tx_ring_size); - - tx_desc_curr = txq->tx_curr_desc; - txq->tx_curr_desc = (tx_desc_curr + 1) % txq->tx_ring_size; - - BUG_ON(txq->tx_curr_desc == txq->tx_used_desc); - - return tx_desc_curr; -} - -static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb) -{ - int nr_frags = skb_shinfo(skb)->nr_frags; - int frag; - - for (frag = 0; frag < nr_frags; frag++) { - skb_frag_t *this_frag; - int tx_index; - struct tx_desc *desc; - - this_frag = &skb_shinfo(skb)->frags[frag]; - tx_index = txq_alloc_desc_index(txq); - desc = &txq->tx_desc_area[tx_index]; - - /* - * The last fragment will generate an interrupt - * which will free the skb on TX completion. - */ - if (frag == nr_frags - 1) { - desc->cmd_sts = BUFFER_OWNED_BY_DMA | - ZERO_PADDING | TX_LAST_DESC | - TX_ENABLE_INTERRUPT; - txq->tx_skb[tx_index] = skb; - } else { - desc->cmd_sts = BUFFER_OWNED_BY_DMA; - txq->tx_skb[tx_index] = NULL; - } - - desc->l4i_chk = 0; - desc->byte_cnt = this_frag->size; - desc->buf_ptr = dma_map_page(NULL, this_frag->page, - this_frag->page_offset, - this_frag->size, - DMA_TO_DEVICE); - } -} - -static inline __be16 sum16_as_be(__sum16 sum) -{ - return (__force __be16)sum; -} - -static void txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb) -{ - struct mv643xx_eth_private *mp = txq_to_mp(txq); - int nr_frags = skb_shinfo(skb)->nr_frags; - int tx_index; - struct tx_desc *desc; - u32 cmd_sts; - int length; - - cmd_sts = TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA; - - tx_index = txq_alloc_desc_index(txq); - desc = &txq->tx_desc_area[tx_index]; - - if (nr_frags) { - txq_submit_frag_skb(txq, skb); - - length = skb_headlen(skb); - txq->tx_skb[tx_index] = NULL; - } else { - cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT; - length = skb->len; - txq->tx_skb[tx_index] = skb; - } - - desc->byte_cnt = length; - desc->buf_ptr = dma_map_single(NULL, skb->data, length, DMA_TO_DEVICE); - - if (skb->ip_summed == CHECKSUM_PARTIAL) { - int mac_hdr_len; - - BUG_ON(skb->protocol != htons(ETH_P_IP) && - skb->protocol != htons(ETH_P_8021Q)); - - cmd_sts |= GEN_TCP_UDP_CHECKSUM | - GEN_IP_V4_CHECKSUM | - ip_hdr(skb)->ihl << TX_IHL_SHIFT; - - mac_hdr_len = (void *)ip_hdr(skb) - (void *)skb->data; - switch (mac_hdr_len - ETH_HLEN) { - case 0: - break; - case 4: - cmd_sts |= MAC_HDR_EXTRA_4_BYTES; - break; - case 8: - cmd_sts |= MAC_HDR_EXTRA_8_BYTES; - break; - case 12: - cmd_sts |= MAC_HDR_EXTRA_4_BYTES; - cmd_sts |= MAC_HDR_EXTRA_8_BYTES; - break; - default: - if (net_ratelimit()) - dev_printk(KERN_ERR, &txq_to_mp(txq)->dev->dev, - "mac header length is %d?!\n", mac_hdr_len); - break; - } - - switch (ip_hdr(skb)->protocol) { - case IPPROTO_UDP: - cmd_sts |= UDP_FRAME; - desc->l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check)); - break; - case IPPROTO_TCP: - desc->l4i_chk = ntohs(sum16_as_be(tcp_hdr(skb)->check)); - break; - default: - BUG(); - } - } else { - /* Errata BTS #50, IHL must be 5 if no HW checksum */ - cmd_sts |= 5 << TX_IHL_SHIFT; - desc->l4i_chk = 0; - } - - /* ensure all other descriptors are written before first cmd_sts */ - wmb(); - desc->cmd_sts = cmd_sts; - - /* clear TX_END interrupt status */ - wrl(mp, INT_CAUSE(mp->port_num), ~(INT_TX_END_0 << txq->index)); - rdl(mp, INT_CAUSE(mp->port_num)); - - /* ensure all descriptors are written before poking hardware */ - wmb(); - txq_enable(txq); - - txq->tx_desc_count += nr_frags + 1; -} - -static int mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct mv643xx_eth_private *mp = netdev_priv(dev); - struct net_device_stats *stats = &dev->stats; - struct tx_queue *txq; - unsigned long flags; - - if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) { - stats->tx_dropped++; - dev_printk(KERN_DEBUG, &dev->dev, - "failed to linearize skb with tiny " - "unaligned fragment\n"); - return NETDEV_TX_BUSY; - } - - spin_lock_irqsave(&mp->lock, flags); - - txq = mp->txq + mp->txq_primary; - - if (txq->tx_ring_size - txq->tx_desc_count < MAX_DESCS_PER_SKB) { - spin_unlock_irqrestore(&mp->lock, flags); - if (txq->index == mp->txq_primary && net_ratelimit()) - dev_printk(KERN_ERR, &dev->dev, - "primary tx queue full?!\n"); - kfree_skb(skb); - return NETDEV_TX_OK; - } - - txq_submit_skb(txq, skb); - stats->tx_bytes += skb->len; - stats->tx_packets++; - dev->trans_start = jiffies; - - if (txq->index == mp->txq_primary) { - int entries_left; - - entries_left = txq->tx_ring_size - txq->tx_desc_count; - if (entries_left < MAX_DESCS_PER_SKB) - netif_stop_queue(dev); - } - - spin_unlock_irqrestore(&mp->lock, flags); - - return NETDEV_TX_OK; -} - - -/* tx rate control **********************************************************/ -/* - * Set total maximum TX rate (shared by all TX queues for this port) - * to 'rate' bits per second, with a maximum burst of 'burst' bytes. - */ -static void tx_set_rate(struct mv643xx_eth_private *mp, int rate, int burst) -{ - int token_rate; - int mtu; - int bucket_size; - - token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000); - if (token_rate > 1023) - token_rate = 1023; - - mtu = (mp->dev->mtu + 255) >> 8; - if (mtu > 63) - mtu = 63; - - bucket_size = (burst + 255) >> 8; - if (bucket_size > 65535) - bucket_size = 65535; - - if (mp->shared->tx_bw_control_moved) { - wrl(mp, TX_BW_RATE_MOVED(mp->port_num), token_rate); - wrl(mp, TX_BW_MTU_MOVED(mp->port_num), mtu); - wrl(mp, TX_BW_BURST_MOVED(mp->port_num), bucket_size); - } else { - wrl(mp, TX_BW_RATE(mp->port_num), token_rate); - wrl(mp, TX_BW_MTU(mp->port_num), mtu); - wrl(mp, TX_BW_BURST(mp->port_num), bucket_size); - } -} - -static void txq_set_rate(struct tx_queue *txq, int rate, int burst) -{ - struct mv643xx_eth_private *mp = txq_to_mp(txq); - int token_rate; - int bucket_size; - - token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000); - if (token_rate > 1023) - token_rate = 1023; - - bucket_size = (burst + 255) >> 8; - if (bucket_size > 65535) - bucket_size = 65535; - - wrl(mp, TXQ_BW_TOKENS(mp->port_num, txq->index), token_rate << 14); - wrl(mp, TXQ_BW_CONF(mp->port_num, txq->index), - (bucket_size << 10) | token_rate); -} - -static void txq_set_fixed_prio_mode(struct tx_queue *txq) -{ - struct mv643xx_eth_private *mp = txq_to_mp(txq); - int off; - u32 val; - - /* - * Turn on fixed priority mode. - */ - if (mp->shared->tx_bw_control_moved) - off = TXQ_FIX_PRIO_CONF_MOVED(mp->port_num); - else - off = TXQ_FIX_PRIO_CONF(mp->port_num); - - val = rdl(mp, off); - val |= 1 << txq->index; - wrl(mp, off, val); -} - -static void txq_set_wrr(struct tx_queue *txq, int weight) -{ - struct mv643xx_eth_private *mp = txq_to_mp(txq); - int off; - u32 val; - - /* - * Turn off fixed priority mode. - */ - if (mp->shared->tx_bw_control_moved) - off = TXQ_FIX_PRIO_CONF_MOVED(mp->port_num); - else - off = TXQ_FIX_PRIO_CONF(mp->port_num); - - val = rdl(mp, off); - val &= ~(1 << txq->index); - wrl(mp, off, val); - - /* - * Configure WRR weight for this queue. - */ - off = TXQ_BW_WRR_CONF(mp->port_num, txq->index); - - val = rdl(mp, off); - val = (val & ~0xff) | (weight & 0xff); - wrl(mp, off, val); -} - - -/* mii management interface *************************************************/ -#define SMI_BUSY 0x10000000 -#define SMI_READ_VALID 0x08000000 -#define SMI_OPCODE_READ 0x04000000 -#define SMI_OPCODE_WRITE 0x00000000 - -static void smi_reg_read(struct mv643xx_eth_private *mp, unsigned int addr, - unsigned int reg, unsigned int *value) -{ - void __iomem *smi_reg = mp->shared_smi->base + SMI_REG; - unsigned long flags; - int i; - - /* the SMI register is a shared resource */ - spin_lock_irqsave(&mp->shared_smi->phy_lock, flags); - - /* wait for the SMI register to become available */ - for (i = 0; readl(smi_reg) & SMI_BUSY; i++) { - if (i == 1000) { - printk("%s: PHY busy timeout\n", mp->dev->name); - goto out; - } - udelay(10); - } - - writel(SMI_OPCODE_READ | (reg << 21) | (addr << 16), smi_reg); - - /* now wait for the data to be valid */ - for (i = 0; !(readl(smi_reg) & SMI_READ_VALID); i++) { - if (i == 1000) { - printk("%s: PHY read timeout\n", mp->dev->name); - goto out; - } - udelay(10); - } - - *value = readl(smi_reg) & 0xffff; -out: - spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags); -} - -static void smi_reg_write(struct mv643xx_eth_private *mp, - unsigned int addr, - unsigned int reg, unsigned int value) -{ - void __iomem *smi_reg = mp->shared_smi->base + SMI_REG; - unsigned long flags; - int i; - - /* the SMI register is a shared resource */ - spin_lock_irqsave(&mp->shared_smi->phy_lock, flags); - - /* wait for the SMI register to become available */ - for (i = 0; readl(smi_reg) & SMI_BUSY; i++) { - if (i == 1000) { - printk("%s: PHY busy timeout\n", mp->dev->name); - goto out; - } - udelay(10); - } - - writel(SMI_OPCODE_WRITE | (reg << 21) | - (addr << 16) | (value & 0xffff), smi_reg); -out: - spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags); -} - - -/* mib counters *************************************************************/ -static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset) -{ - return rdl(mp, MIB_COUNTERS(mp->port_num) + offset); -} - -static void mib_counters_clear(struct mv643xx_eth_private *mp) -{ - int i; - - for (i = 0; i < 0x80; i += 4) - mib_read(mp, i); -} - -static void mib_counters_update(struct mv643xx_eth_private *mp) -{ - struct mib_counters *p = &mp->mib_counters; - - p->good_octets_received += mib_read(mp, 0x00); - p->good_octets_received += (u64)mib_read(mp, 0x04) << 32; - p->bad_octets_received += mib_read(mp, 0x08); - p->internal_mac_transmit_err += mib_read(mp, 0x0c); - p->good_frames_received += mib_read(mp, 0x10); - p->bad_frames_received += mib_read(mp, 0x14); - p->broadcast_frames_received += mib_read(mp, 0x18); - p->multicast_frames_received += mib_read(mp, 0x1c); - p->frames_64_octets += mib_read(mp, 0x20); - p->frames_65_to_127_octets += mib_read(mp, 0x24); - p->frames_128_to_255_octets += mib_read(mp, 0x28); - p->frames_256_to_511_octets += mib_read(mp, 0x2c); - p->frames_512_to_1023_octets += mib_read(mp, 0x30); - p->frames_1024_to_max_octets += mib_read(mp, 0x34); - p->good_octets_sent += mib_read(mp, 0x38); - p->good_octets_sent += (u64)mib_read(mp, 0x3c) << 32; - p->good_frames_sent += mib_read(mp, 0x40); - p->excessive_collision += mib_read(mp, 0x44); - p->multicast_frames_sent += mib_read(mp, 0x48); - p->broadcast_frames_sent += mib_read(mp, 0x4c); - p->unrec_mac_control_received += mib_read(mp, 0x50); - p->fc_sent += mib_read(mp, 0x54); - p->good_fc_received += mib_read(mp, 0x58); - p->bad_fc_received += mib_read(mp, 0x5c); - p->undersize_received += mib_read(mp, 0x60); - p->fragments_received += mib_read(mp, 0x64); - p->oversize_received += mib_read(mp, 0x68); - p->jabber_received += mib_read(mp, 0x6c); - p->mac_receive_error += mib_read(mp, 0x70); - p->bad_crc_event += mib_read(mp, 0x74); - p->collision += mib_read(mp, 0x78); - p->late_collision += mib_read(mp, 0x7c); -} - - -/* ethtool ******************************************************************/ -struct mv643xx_eth_stats { - char stat_string[ETH_GSTRING_LEN]; - int sizeof_stat; - int netdev_off; - int mp_off; -}; - -#define SSTAT(m) \ - { #m, FIELD_SIZEOF(struct net_device_stats, m), \ - offsetof(struct net_device, stats.m), -1 } - -#define MIBSTAT(m) \ - { #m, FIELD_SIZEOF(struct mib_counters, m), \ - -1, offsetof(struct mv643xx_eth_private, mib_counters.m) } - -static const struct mv643xx_eth_stats mv643xx_eth_stats[] = { - SSTAT(rx_packets), - SSTAT(tx_packets), - SSTAT(rx_bytes), - SSTAT(tx_bytes), - SSTAT(rx_errors), - SSTAT(tx_errors), - SSTAT(rx_dropped), - SSTAT(tx_dropped), - MIBSTAT(good_octets_received), - MIBSTAT(bad_octets_received), - MIBSTAT(internal_mac_transmit_err), - MIBSTAT(good_frames_received), - MIBSTAT(bad_frames_received), - MIBSTAT(broadcast_frames_received), - MIBSTAT(multicast_frames_received), - MIBSTAT(frames_64_octets), - MIBSTAT(frames_65_to_127_octets), - MIBSTAT(frames_128_to_255_octets), - MIBSTAT(frames_256_to_511_octets), - MIBSTAT(frames_512_to_1023_octets), - MIBSTAT(frames_1024_to_max_octets), - MIBSTAT(good_octets_sent), - MIBSTAT(good_frames_sent), - MIBSTAT(excessive_collision), - MIBSTAT(multicast_frames_sent), - MIBSTAT(broadcast_frames_sent), - MIBSTAT(unrec_mac_control_received), - MIBSTAT(fc_sent), - MIBSTAT(good_fc_received), - MIBSTAT(bad_fc_received), - MIBSTAT(undersize_received), - MIBSTAT(fragments_received), - MIBSTAT(oversize_received), - MIBSTAT(jabber_received), - MIBSTAT(mac_receive_error), - MIBSTAT(bad_crc_event), - MIBSTAT(collision), - MIBSTAT(late_collision), -}; - -static int mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct mv643xx_eth_private *mp = netdev_priv(dev); - int err; - - spin_lock_irq(&mp->lock); - err = mii_ethtool_gset(&mp->mii, cmd); - spin_unlock_irq(&mp->lock); - - /* - * The MAC does not support 1000baseT_Half. - */ - cmd->supported &= ~SUPPORTED_1000baseT_Half; - cmd->advertising &= ~ADVERTISED_1000baseT_Half; - - return err; -} - -static int mv643xx_eth_get_settings_phyless(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct mv643xx_eth_private *mp = netdev_priv(dev); - u32 port_status; - - port_status = rdl(mp, PORT_STATUS(mp->port_num)); - - cmd->supported = SUPPORTED_MII; - cmd->advertising = ADVERTISED_MII; - switch (port_status & PORT_SPEED_MASK) { - case PORT_SPEED_10: - cmd->speed = SPEED_10; - break; - case PORT_SPEED_100: - cmd->speed = SPEED_100; - break; - case PORT_SPEED_1000: - cmd->speed = SPEED_1000; - break; - default: - cmd->speed = -1; - break; - } - cmd->duplex = (port_status & FULL_DUPLEX) ? DUPLEX_FULL : DUPLEX_HALF; - cmd->port = PORT_MII; - cmd->phy_address = 0; - cmd->transceiver = XCVR_INTERNAL; - cmd->autoneg = AUTONEG_DISABLE; - cmd->maxtxpkt = 1; - cmd->maxrxpkt = 1; - - return 0; -} - -static int mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct mv643xx_eth_private *mp = netdev_priv(dev); - int err; - - /* - * The MAC does not support 1000baseT_Half. - */ - cmd->advertising &= ~ADVERTISED_1000baseT_Half; - - spin_lock_irq(&mp->lock); - err = mii_ethtool_sset(&mp->mii, cmd); - spin_unlock_irq(&mp->lock); - - return err; -} - -static int mv643xx_eth_set_settings_phyless(struct net_device *dev, struct ethtool_cmd *cmd) -{ - return -EINVAL; -} - -static void mv643xx_eth_get_drvinfo(struct net_device *dev, - struct ethtool_drvinfo *drvinfo) -{ - strncpy(drvinfo->driver, mv643xx_eth_driver_name, 32); - strncpy(drvinfo->version, mv643xx_eth_driver_version, 32); - strncpy(drvinfo->fw_version, "N/A", 32); - strncpy(drvinfo->bus_info, "platform", 32); - drvinfo->n_stats = ARRAY_SIZE(mv643xx_eth_stats); -} - -static int mv643xx_eth_nway_reset(struct net_device *dev) -{ - struct mv643xx_eth_private *mp = netdev_priv(dev); - - return mii_nway_restart(&mp->mii); -} - -static int mv643xx_eth_nway_reset_phyless(struct net_device *dev) -{ - return -EINVAL; -} - -static u32 mv643xx_eth_get_link(struct net_device *dev) -{ - struct mv643xx_eth_private *mp = netdev_priv(dev); - - return mii_link_ok(&mp->mii); -} - -static u32 mv643xx_eth_get_link_phyless(struct net_device *dev) -{ - return 1; -} - -static void mv643xx_eth_get_strings(struct net_device *dev, - uint32_t stringset, uint8_t *data) -{ - int i; - - if (stringset == ETH_SS_STATS) { - for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) { - memcpy(data + i * ETH_GSTRING_LEN, - mv643xx_eth_stats[i].stat_string, - ETH_GSTRING_LEN); - } - } -} - -static void mv643xx_eth_get_ethtool_stats(struct net_device *dev, - struct ethtool_stats *stats, - uint64_t *data) -{ - struct mv643xx_eth_private *mp = dev->priv; - int i; - - mib_counters_update(mp); - - for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) { - const struct mv643xx_eth_stats *stat; - void *p; - - stat = mv643xx_eth_stats + i; - - if (stat->netdev_off >= 0) - p = ((void *)mp->dev) + stat->netdev_off; - else - p = ((void *)mp) + stat->mp_off; - - data[i] = (stat->sizeof_stat == 8) ? - *(uint64_t *)p : *(uint32_t *)p; - } -} - -static int mv643xx_eth_get_sset_count(struct net_device *dev, int sset) -{ - if (sset == ETH_SS_STATS) - return ARRAY_SIZE(mv643xx_eth_stats); - - return -EOPNOTSUPP; -} - -static const struct ethtool_ops mv643xx_eth_ethtool_ops = { - .get_settings = mv643xx_eth_get_settings, - .set_settings = mv643xx_eth_set_settings, - .get_drvinfo = mv643xx_eth_get_drvinfo, - .nway_reset = mv643xx_eth_nway_reset, - .get_link = mv643xx_eth_get_link, - .set_sg = ethtool_op_set_sg, - .get_strings = mv643xx_eth_get_strings, - .get_ethtool_stats = mv643xx_eth_get_ethtool_stats, - .get_sset_count = mv643xx_eth_get_sset_count, -}; - -static const struct ethtool_ops mv643xx_eth_ethtool_ops_phyless = { - .get_settings = mv643xx_eth_get_settings_phyless, - .set_settings = mv643xx_eth_set_settings_phyless, - .get_drvinfo = mv643xx_eth_get_drvinfo, - .nway_reset = mv643xx_eth_nway_reset_phyless, - .get_link = mv643xx_eth_get_link_phyless, - .set_sg = ethtool_op_set_sg, - .get_strings = mv643xx_eth_get_strings, - .get_ethtool_stats = mv643xx_eth_get_ethtool_stats, - .get_sset_count = mv643xx_eth_get_sset_count, -}; - - -/* address handling *********************************************************/ -static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr) -{ - unsigned int mac_h; - unsigned int mac_l; - - mac_h = rdl(mp, MAC_ADDR_HIGH(mp->port_num)); - mac_l = rdl(mp, MAC_ADDR_LOW(mp->port_num)); - - addr[0] = (mac_h >> 24) & 0xff; - addr[1] = (mac_h >> 16) & 0xff; - addr[2] = (mac_h >> 8) & 0xff; - addr[3] = mac_h & 0xff; - addr[4] = (mac_l >> 8) & 0xff; - addr[5] = mac_l & 0xff; -} - -static void init_mac_tables(struct mv643xx_eth_private *mp) -{ - int i; - - for (i = 0; i < 0x100; i += 4) { - wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0); - wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0); - } - - for (i = 0; i < 0x10; i += 4) - wrl(mp, UNICAST_TABLE(mp->port_num) + i, 0); -} - -static void set_filter_table_entry(struct mv643xx_eth_private *mp, - int table, unsigned char entry) -{ - unsigned int table_reg; - - /* Set "accepts frame bit" at specified table entry */ - table_reg = rdl(mp, table + (entry & 0xfc)); - table_reg |= 0x01 << (8 * (entry & 3)); - wrl(mp, table + (entry & 0xfc), table_reg); -} - -static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr) -{ - unsigned int mac_h; - unsigned int mac_l; - int table; - - mac_l = (addr[4] << 8) | addr[5]; - mac_h = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]; - - wrl(mp, MAC_ADDR_LOW(mp->port_num), mac_l); - wrl(mp, MAC_ADDR_HIGH(mp->port_num), mac_h); - - table = UNICAST_TABLE(mp->port_num); - set_filter_table_entry(mp, table, addr[5] & 0x0f); -} - -static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr) -{ - struct mv643xx_eth_private *mp = netdev_priv(dev); - - /* +2 is for the offset of the HW addr type */ - memcpy(dev->dev_addr, addr + 2, 6); - - init_mac_tables(mp); - uc_addr_set(mp, dev->dev_addr); - - return 0; -} - -static int addr_crc(unsigned char *addr) -{ - int crc = 0; - int i; - - for (i = 0; i < 6; i++) { - int j; - - crc = (crc ^ addr[i]) << 8; - for (j = 7; j >= 0; j--) { - if (crc & (0x100 << j)) - crc ^= 0x107 << j; - } - } - - return crc; -} - -static void mv643xx_eth_set_rx_mode(struct net_device *dev) -{ - struct mv643xx_eth_private *mp = netdev_priv(dev); - u32 port_config; - struct dev_addr_list *addr; - int i; - - port_config = rdl(mp, PORT_CONFIG(mp->port_num)); - if (dev->flags & IFF_PROMISC) - port_config |= UNICAST_PROMISCUOUS_MODE; - else - port_config &= ~UNICAST_PROMISCUOUS_MODE; - wrl(mp, PORT_CONFIG(mp->port_num), port_config); - - if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) { - int port_num = mp->port_num; - u32 accept = 0x01010101; - - for (i = 0; i < 0x100; i += 4) { - wrl(mp, SPECIAL_MCAST_TABLE(port_num) + i, accept); - wrl(mp, OTHER_MCAST_TABLE(port_num) + i, accept); - } - return; - } - - for (i = 0; i < 0x100; i += 4) { - wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0); - wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0); - } - - for (addr = dev->mc_list; addr != NULL; addr = addr->next) { - u8 *a = addr->da_addr; - int table; - - if (addr->da_addrlen != 6) - continue; - - if (memcmp(a, "\x01\x00\x5e\x00\x00", 5) == 0) { - table = SPECIAL_MCAST_TABLE(mp->port_num); - set_filter_table_entry(mp, table, a[5]); - } else { - int crc = addr_crc(a); - - table = OTHER_MCAST_TABLE(mp->port_num); - set_filter_table_entry(mp, table, crc); - } - } -} - - -/* rx/tx queue initialisation ***********************************************/ -static int rxq_init(struct mv643xx_eth_private *mp, int index) -{ - struct rx_queue *rxq = mp->rxq + index; - struct rx_desc *rx_desc; - int size; - int i; - - rxq->index = index; - - rxq->rx_ring_size = mp->default_rx_ring_size; - - rxq->rx_desc_count = 0; - rxq->rx_curr_desc = 0; - rxq->rx_used_desc = 0; - - size = rxq->rx_ring_size * sizeof(struct rx_desc); - - if (index == mp->rxq_primary && size <= mp->rx_desc_sram_size) { - rxq->rx_desc_area = ioremap(mp->rx_desc_sram_addr, - mp->rx_desc_sram_size); - rxq->rx_desc_dma = mp->rx_desc_sram_addr; - } else { - rxq->rx_desc_area = dma_alloc_coherent(NULL, size, - &rxq->rx_desc_dma, - GFP_KERNEL); - } - - if (rxq->rx_desc_area == NULL) { - dev_printk(KERN_ERR, &mp->dev->dev, - "can't allocate rx ring (%d bytes)\n", size); - goto out; - } - memset(rxq->rx_desc_area, 0, size); - - rxq->rx_desc_area_size = size; - rxq->rx_skb = kmalloc(rxq->rx_ring_size * sizeof(*rxq->rx_skb), - GFP_KERNEL); - if (rxq->rx_skb == NULL) { - dev_printk(KERN_ERR, &mp->dev->dev, - "can't allocate rx skb ring\n"); - goto out_free; - } - - rx_desc = (struct rx_desc *)rxq->rx_desc_area; - for (i = 0; i < rxq->rx_ring_size; i++) { - int nexti = (i + 1) % rxq->rx_ring_size; - rx_desc[i].next_desc_ptr = rxq->rx_desc_dma + - nexti * sizeof(struct rx_desc); - } - - init_timer(&rxq->rx_oom); - rxq->rx_oom.data = (unsigned long)rxq; - rxq->rx_oom.function = rxq_refill_timer_wrapper; - - return 0; - - -out_free: - if (index == mp->rxq_primary && size <= mp->rx_desc_sram_size) - iounmap(rxq->rx_desc_area); - else - dma_free_coherent(NULL, size, - rxq->rx_desc_area, - rxq->rx_desc_dma); - -out: - return -ENOMEM; -} - -static void rxq_deinit(struct rx_queue *rxq) -{ - struct mv643xx_eth_private *mp = rxq_to_mp(rxq); - int i; - - rxq_disable(rxq); - - del_timer_sync(&rxq->rx_oom); - - for (i = 0; i < rxq->rx_ring_size; i++) { - if (rxq->rx_skb[i]) { - dev_kfree_skb(rxq->rx_skb[i]); - rxq->rx_desc_count--; - } - } - - if (rxq->rx_desc_count) { - dev_printk(KERN_ERR, &mp->dev->dev, - "error freeing rx ring -- %d skbs stuck\n", - rxq->rx_desc_count); - } - - if (rxq->index == mp->rxq_primary && - rxq->rx_desc_area_size <= mp->rx_desc_sram_size) - iounmap(rxq->rx_desc_area); - else - dma_free_coherent(NULL, rxq->rx_desc_area_size, - rxq->rx_desc_area, rxq->rx_desc_dma); - - kfree(rxq->rx_skb); -} - -static int txq_init(struct mv643xx_eth_private *mp, int index) -{ - struct tx_queue *txq = mp->txq + index; - struct tx_desc *tx_desc; - int size; - int i; - - txq->index = index; - - txq->tx_ring_size = mp->default_tx_ring_size; - - txq->tx_desc_count = 0; - txq->tx_curr_desc = 0; - txq->tx_used_desc = 0; - - size = txq->tx_ring_size * sizeof(struct tx_desc); - - if (index == mp->txq_primary && size <= mp->tx_desc_sram_size) { - txq->tx_desc_area = ioremap(mp->tx_desc_sram_addr, - mp->tx_desc_sram_size); - txq->tx_desc_dma = mp->tx_desc_sram_addr; - } else { - txq->tx_desc_area = dma_alloc_coherent(NULL, size, - &txq->tx_desc_dma, - GFP_KERNEL); - } - - if (txq->tx_desc_area == NULL) { - dev_printk(KERN_ERR, &mp->dev->dev, - "can't allocate tx ring (%d bytes)\n", size); - goto out; - } - memset(txq->tx_desc_area, 0, size); - - txq->tx_desc_area_size = size; - txq->tx_skb = kmalloc(txq->tx_ring_size * sizeof(*txq->tx_skb), - GFP_KERNEL); - if (txq->tx_skb == NULL) { - dev_printk(KERN_ERR, &mp->dev->dev, - "can't allocate tx skb ring\n"); - goto out_free; - } - - tx_desc = (struct tx_desc *)txq->tx_desc_area; - for (i = 0; i < txq->tx_ring_size; i++) { - struct tx_desc *txd = tx_desc + i; - int nexti = (i + 1) % txq->tx_ring_size; - - txd->cmd_sts = 0; - txd->next_desc_ptr = txq->tx_desc_dma + - nexti * sizeof(struct tx_desc); - } - - return 0; - - -out_free: - if (index == mp->txq_primary && size <= mp->tx_desc_sram_size) - iounmap(txq->tx_desc_area); - else - dma_free_coherent(NULL, size, - txq->tx_desc_area, - txq->tx_desc_dma); - -out: - return -ENOMEM; -} - -static void txq_reclaim(struct tx_queue *txq, int force) -{ - struct mv643xx_eth_private *mp = txq_to_mp(txq); - unsigned long flags; - - spin_lock_irqsave(&mp->lock, flags); - while (txq->tx_desc_count > 0) { - int tx_index; - struct tx_desc *desc; - u32 cmd_sts; - struct sk_buff *skb; - dma_addr_t addr; - int count; - - tx_index = txq->tx_used_desc; - desc = &txq->tx_desc_area[tx_index]; - cmd_sts = desc->cmd_sts; - - if (cmd_sts & BUFFER_OWNED_BY_DMA) { - if (!force) - break; - desc->cmd_sts = cmd_sts & ~BUFFER_OWNED_BY_DMA; - } - - txq->tx_used_desc = (tx_index + 1) % txq->tx_ring_size; - txq->tx_desc_count--; - - addr = desc->buf_ptr; - count = desc->byte_cnt; - skb = txq->tx_skb[tx_index]; - txq->tx_skb[tx_index] = NULL; - - if (cmd_sts & ERROR_SUMMARY) { - dev_printk(KERN_INFO, &mp->dev->dev, "tx error\n"); - mp->dev->stats.tx_errors++; - } - - /* - * Drop mp->lock while we free the skb. - */ - spin_unlock_irqrestore(&mp->lock, flags); - - if (cmd_sts & TX_FIRST_DESC) - dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE); - else - dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE); - - if (skb) - dev_kfree_skb_irq(skb); - - spin_lock_irqsave(&mp->lock, flags); - } - spin_unlock_irqrestore(&mp->lock, flags); -} - -static void txq_deinit(struct tx_queue *txq) -{ - struct mv643xx_eth_private *mp = txq_to_mp(txq); - - txq_disable(txq); - txq_reclaim(txq, 1); - - BUG_ON(txq->tx_used_desc != txq->tx_curr_desc); - - if (txq->index == mp->txq_primary && - txq->tx_desc_area_size <= mp->tx_desc_sram_size) - iounmap(txq->tx_desc_area); - else - dma_free_coherent(NULL, txq->tx_desc_area_size, - txq->tx_desc_area, txq->tx_desc_dma); - - kfree(txq->tx_skb); -} - - -/* netdev ops and related ***************************************************/ -static void handle_link_event(struct mv643xx_eth_private *mp) -{ - struct net_device *dev = mp->dev; - u32 port_status; - int speed; - int duplex; - int fc; - - port_status = rdl(mp, PORT_STATUS(mp->port_num)); - if (!(port_status & LINK_UP)) { - if (netif_carrier_ok(dev)) { - int i; - - printk(KERN_INFO "%s: link down\n", dev->name); - - netif_carrier_off(dev); - netif_stop_queue(dev); - - for (i = 0; i < 8; i++) { - struct tx_queue *txq = mp->txq + i; - - if (mp->txq_mask & (1 << i)) { - txq_reclaim(txq, 1); - txq_reset_hw_ptr(txq); - } - } - } - return; - } - - switch (port_status & PORT_SPEED_MASK) { - case PORT_SPEED_10: - speed = 10; - break; - case PORT_SPEED_100: - speed = 100; - break; - case PORT_SPEED_1000: - speed = 1000; - break; - default: - speed = -1; - break; - } - duplex = (port_status & FULL_DUPLEX) ? 1 : 0; - fc = (port_status & FLOW_CONTROL_ENABLED) ? 1 : 0; - - printk(KERN_INFO "%s: link up, %d Mb/s, %s duplex, " - "flow control %sabled\n", dev->name, - speed, duplex ? "full" : "half", - fc ? "en" : "dis"); - - if (!netif_carrier_ok(dev)) { - netif_carrier_on(dev); - netif_wake_queue(dev); - } -} - -static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id) -{ - struct net_device *dev = (struct net_device *)dev_id; - struct mv643xx_eth_private *mp = netdev_priv(dev); - u32 int_cause; - u32 int_cause_ext; - - int_cause = rdl(mp, INT_CAUSE(mp->port_num)) & - (INT_TX_END | INT_RX | INT_EXT); - if (int_cause == 0) - return IRQ_NONE; - - int_cause_ext = 0; - if (int_cause & INT_EXT) { - int_cause_ext = rdl(mp, INT_CAUSE_EXT(mp->port_num)) - & (INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX); - wrl(mp, INT_CAUSE_EXT(mp->port_num), ~int_cause_ext); - } - - if (int_cause_ext & (INT_EXT_PHY | INT_EXT_LINK)) - handle_link_event(mp); - - /* - * RxBuffer or RxError set for any of the 8 queues? - */ -#ifdef MV643XX_ETH_NAPI - if (int_cause & INT_RX) { - wrl(mp, INT_CAUSE(mp->port_num), ~(int_cause & INT_RX)); - wrl(mp, INT_MASK(mp->port_num), 0x00000000); - rdl(mp, INT_MASK(mp->port_num)); - - netif_rx_schedule(dev, &mp->napi); - } -#else - if (int_cause & INT_RX) { - int i; - - for (i = 7; i >= 0; i--) - if (mp->rxq_mask & (1 << i)) - rxq_process(mp->rxq + i, INT_MAX); - } -#endif - - /* - * TxBuffer or TxError set for any of the 8 queues? - */ - if (int_cause_ext & INT_EXT_TX) { - int i; - - for (i = 0; i < 8; i++) - if (mp->txq_mask & (1 << i)) - txq_reclaim(mp->txq + i, 0); - - /* - * Enough space again in the primary TX queue for a - * full packet? - */ - if (netif_carrier_ok(dev)) { - spin_lock(&mp->lock); - __txq_maybe_wake(mp->txq + mp->txq_primary); - spin_unlock(&mp->lock); - } - } - - /* - * Any TxEnd interrupts? - */ - if (int_cause & INT_TX_END) { - int i; - - wrl(mp, INT_CAUSE(mp->port_num), ~(int_cause & INT_TX_END)); - - spin_lock(&mp->lock); - for (i = 0; i < 8; i++) { - struct tx_queue *txq = mp->txq + i; - u32 hw_desc_ptr; - u32 expected_ptr; - - if ((int_cause & (INT_TX_END_0 << i)) == 0) - continue; - - hw_desc_ptr = - rdl(mp, TXQ_CURRENT_DESC_PTR(mp->port_num, i)); - expected_ptr = (u32)txq->tx_desc_dma + - txq->tx_curr_desc * sizeof(struct tx_desc); - - if (hw_desc_ptr != expected_ptr) - txq_enable(txq); - } - spin_unlock(&mp->lock); - } - - return IRQ_HANDLED; -} - -static void phy_reset(struct mv643xx_eth_private *mp) -{ - unsigned int data; - - smi_reg_read(mp, mp->phy_addr, MII_BMCR, &data); - data |= BMCR_RESET; - smi_reg_write(mp, mp->phy_addr, MII_BMCR, data); - - do { - udelay(1); - smi_reg_read(mp, mp->phy_addr, MII_BMCR, &data); - } while (data & BMCR_RESET); -} - -static void port_start(struct mv643xx_eth_private *mp) -{ - u32 pscr; - int i; - - /* - * Perform PHY reset, if there is a PHY. - */ - if (mp->phy_addr != -1) { - struct ethtool_cmd cmd; - - mv643xx_eth_get_settings(mp->dev, &cmd); - phy_reset(mp); - mv643xx_eth_set_settings(mp->dev, &cmd); - } - - /* - * Configure basic link parameters. - */ - pscr = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num)); - - pscr |= SERIAL_PORT_ENABLE; - wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr); - - pscr |= DO_NOT_FORCE_LINK_FAIL; - if (mp->phy_addr == -1) - pscr |= FORCE_LINK_PASS; - wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr); - - wrl(mp, SDMA_CONFIG(mp->port_num), PORT_SDMA_CONFIG_DEFAULT_VALUE); - - /* - * Configure TX path and queues. - */ - tx_set_rate(mp, 1000000000, 16777216); - for (i = 0; i < 8; i++) { - struct tx_queue *txq = mp->txq + i; - - if ((mp->txq_mask & (1 << i)) == 0) - continue; - - txq_reset_hw_ptr(txq); - txq_set_rate(txq, 1000000000, 16777216); - txq_set_fixed_prio_mode(txq); - } - - /* - * Add configured unicast address to address filter table. - */ - uc_addr_set(mp, mp->dev->dev_addr); - - /* - * Receive all unmatched unicast, TCP, UDP, BPDU and broadcast - * frames to RX queue #0. - */ - wrl(mp, PORT_CONFIG(mp->port_num), 0x00000000); - - /* - * Treat BPDUs as normal multicasts, and disable partition mode. - */ - wrl(mp, PORT_CONFIG_EXT(mp->port_num), 0x00000000); - - /* - * Enable the receive queues. - */ - for (i = 0; i < 8; i++) { - struct rx_queue *rxq = mp->rxq + i; - int off = RXQ_CURRENT_DESC_PTR(mp->port_num, i); - u32 addr; - - if ((mp->rxq_mask & (1 << i)) == 0) - continue; - - addr = (u32)rxq->rx_desc_dma; - addr += rxq->rx_curr_desc * sizeof(struct rx_desc); - wrl(mp, off, addr); - - rxq_enable(rxq); - } -} - -static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int delay) -{ - unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; - u32 val; - - val = rdl(mp, SDMA_CONFIG(mp->port_num)); - if (mp->shared->extended_rx_coal_limit) { - if (coal > 0xffff) - coal = 0xffff; - val &= ~0x023fff80; - val |= (coal & 0x8000) << 10; - val |= (coal & 0x7fff) << 7; - } else { - if (coal > 0x3fff) - coal = 0x3fff; - val &= ~0x003fff00; - val |= (coal & 0x3fff) << 8; - } - wrl(mp, SDMA_CONFIG(mp->port_num), val); -} - -static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int delay) -{ - unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64; - - if (coal > 0x3fff) - coal = 0x3fff; - wrl(mp, TX_FIFO_URGENT_THRESHOLD(mp->port_num), (coal & 0x3fff) << 4); -} - -static int mv643xx_eth_open(struct net_device *dev) -{ - struct mv643xx_eth_private *mp = netdev_priv(dev); - int err; - int i; - - wrl(mp, INT_CAUSE(mp->port_num), 0); - wrl(mp, INT_CAUSE_EXT(mp->port_num), 0); - rdl(mp, INT_CAUSE_EXT(mp->port_num)); - - err = request_irq(dev->irq, mv643xx_eth_irq, - IRQF_SHARED | IRQF_SAMPLE_RANDOM, - dev->name, dev); - if (err) { - dev_printk(KERN_ERR, &dev->dev, "can't assign irq\n"); - return -EAGAIN; - } - - init_mac_tables(mp); - - for (i = 0; i < 8; i++) { - if ((mp->rxq_mask & (1 << i)) == 0) - continue; - - err = rxq_init(mp, i); - if (err) { - while (--i >= 0) - if (mp->rxq_mask & (1 << i)) - rxq_deinit(mp->rxq + i); - goto out; - } - - rxq_refill(mp->rxq + i); - } - - for (i = 0; i < 8; i++) { - if ((mp->txq_mask & (1 << i)) == 0) - continue; - - err = txq_init(mp, i); - if (err) { - while (--i >= 0) - if (mp->txq_mask & (1 << i)) - txq_deinit(mp->txq + i); - goto out_free; - } - } - -#ifdef MV643XX_ETH_NAPI - napi_enable(&mp->napi); -#endif - - netif_carrier_off(dev); - netif_stop_queue(dev); - - port_start(mp); - - set_rx_coal(mp, 0); - set_tx_coal(mp, 0); - - wrl(mp, INT_MASK_EXT(mp->port_num), - INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX); - - wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT); - - return 0; - - -out_free: - for (i = 0; i < 8; i++) - if (mp->rxq_mask & (1 << i)) - rxq_deinit(mp->rxq + i); -out: - free_irq(dev->irq, dev); - - return err; -} - -static void port_reset(struct mv643xx_eth_private *mp) -{ - unsigned int data; - int i; - - for (i = 0; i < 8; i++) { - if (mp->rxq_mask & (1 << i)) - rxq_disable(mp->rxq + i); - if (mp->txq_mask & (1 << i)) - txq_disable(mp->txq + i); - } - - while (1) { - u32 ps = rdl(mp, PORT_STATUS(mp->port_num)); - - if ((ps & (TX_IN_PROGRESS | TX_FIFO_EMPTY)) == TX_FIFO_EMPTY) - break; - udelay(10); - } - - /* Reset the Enable bit in the Configuration Register */ - data = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num)); - data &= ~(SERIAL_PORT_ENABLE | - DO_NOT_FORCE_LINK_FAIL | - FORCE_LINK_PASS); - wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), data); -} - -static int mv643xx_eth_stop(struct net_device *dev) -{ - struct mv643xx_eth_private *mp = netdev_priv(dev); - int i; - - wrl(mp, INT_MASK(mp->port_num), 0x00000000); - rdl(mp, INT_MASK(mp->port_num)); - -#ifdef MV643XX_ETH_NAPI - napi_disable(&mp->napi); -#endif - netif_carrier_off(dev); - netif_stop_queue(dev); - - free_irq(dev->irq, dev); - - port_reset(mp); - mib_counters_update(mp); - - for (i = 0; i < 8; i++) { - if (mp->rxq_mask & (1 << i)) - rxq_deinit(mp->rxq + i); - if (mp->txq_mask & (1 << i)) - txq_deinit(mp->txq + i); - } - - return 0; -} - -static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) -{ - struct mv643xx_eth_private *mp = netdev_priv(dev); - - if (mp->phy_addr != -1) - return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL); - - return -EOPNOTSUPP; -} - -static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu) -{ - struct mv643xx_eth_private *mp = netdev_priv(dev); - - if (new_mtu < 64 || new_mtu > 9500) - return -EINVAL; - - dev->mtu = new_mtu; - tx_set_rate(mp, 1000000000, 16777216); - - if (!netif_running(dev)) - return 0; - - /* - * Stop and then re-open the interface. This will allocate RX - * skbs of the new MTU. - * There is a possible danger that the open will not succeed, - * due to memory being full. - */ - mv643xx_eth_stop(dev); - if (mv643xx_eth_open(dev)) { - dev_printk(KERN_ERR, &dev->dev, - "fatal error on re-opening device after " - "MTU change\n"); - } - - return 0; -} - -static void tx_timeout_task(struct work_struct *ugly) -{ - struct mv643xx_eth_private *mp; - - mp = container_of(ugly, struct mv643xx_eth_private, tx_timeout_task); - if (netif_running(mp->dev)) { - netif_stop_queue(mp->dev); - - port_reset(mp); - port_start(mp); - - __txq_maybe_wake(mp->txq + mp->txq_primary); - } -} - -static void mv643xx_eth_tx_timeout(struct net_device *dev) -{ - struct mv643xx_eth_private *mp = netdev_priv(dev); - - dev_printk(KERN_INFO, &dev->dev, "tx timeout\n"); - - schedule_work(&mp->tx_timeout_task); -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -static void mv643xx_eth_netpoll(struct net_device *dev) -{ - struct mv643xx_eth_private *mp = netdev_priv(dev); - - wrl(mp, INT_MASK(mp->port_num), 0x00000000); - rdl(mp, INT_MASK(mp->port_num)); - - mv643xx_eth_irq(dev->irq, dev); - - wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT); -} -#endif - -static int mv643xx_eth_mdio_read(struct net_device *dev, int addr, int reg) -{ - struct mv643xx_eth_private *mp = netdev_priv(dev); - int val; - - smi_reg_read(mp, addr, reg, &val); - - return val; -} - -static void mv643xx_eth_mdio_write(struct net_device *dev, int addr, int reg, int val) -{ - struct mv643xx_eth_private *mp = netdev_priv(dev); - smi_reg_write(mp, addr, reg, val); -} - - -/* platform glue ************************************************************/ -static void -mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private *msp, - struct mbus_dram_target_info *dram) -{ - void __iomem *base = msp->base; - u32 win_enable; - u32 win_protect; - int i; - - for (i = 0; i < 6; i++) { - writel(0, base + WINDOW_BASE(i)); - writel(0, base + WINDOW_SIZE(i)); - if (i < 4) - writel(0, base + WINDOW_REMAP_HIGH(i)); - } - - win_enable = 0x3f; - win_protect = 0; - - for (i = 0; i < dram->num_cs; i++) { - struct mbus_dram_window *cs = dram->cs + i; - - writel((cs->base & 0xffff0000) | - (cs->mbus_attr << 8) | - dram->mbus_dram_target_id, base + WINDOW_BASE(i)); - writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i)); - - win_enable &= ~(1 << i); - win_protect |= 3 << (2 * i); - } - - writel(win_enable, base + WINDOW_BAR_ENABLE); - msp->win_protect = win_protect; -} - -static void infer_hw_params(struct mv643xx_eth_shared_private *msp) -{ - /* - * Check whether we have a 14-bit coal limit field in bits - * [21:8], or a 16-bit coal limit in bits [25,21:7] of the - * SDMA config register. - */ - writel(0x02000000, msp->base + SDMA_CONFIG(0)); - if (readl(msp->base + SDMA_CONFIG(0)) & 0x02000000) - msp->extended_rx_coal_limit = 1; - else - msp->extended_rx_coal_limit = 0; - - /* - * Check whether the TX rate control registers are in the - * old or the new place. - */ - writel(1, msp->base + TX_BW_MTU_MOVED(0)); - if (readl(msp->base + TX_BW_MTU_MOVED(0)) & 1) - msp->tx_bw_control_moved = 1; - else - msp->tx_bw_control_moved = 0; -} - -static int mv643xx_eth_shared_probe(struct platform_device *pdev) -{ - static int mv643xx_eth_version_printed = 0; - struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data; - struct mv643xx_eth_shared_private *msp; - struct resource *res; - int ret; - - if (!mv643xx_eth_version_printed++) - printk(KERN_NOTICE "MV-643xx 10/100/1000 ethernet " - "driver version %s\n", mv643xx_eth_driver_version); - - ret = -EINVAL; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (res == NULL) - goto out; - - ret = -ENOMEM; - msp = kmalloc(sizeof(*msp), GFP_KERNEL); - if (msp == NULL) - goto out; - memset(msp, 0, sizeof(*msp)); - - msp->base = ioremap(res->start, res->end - res->start + 1); - if (msp->base == NULL) - goto out_free; - - spin_lock_init(&msp->phy_lock); - - /* - * (Re-)program MBUS remapping windows if we are asked to. - */ - if (pd != NULL && pd->dram != NULL) - mv643xx_eth_conf_mbus_windows(msp, pd->dram); - - /* - * Detect hardware parameters. - */ - msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000; - infer_hw_params(msp); - - platform_set_drvdata(pdev, msp); - - return 0; - -out_free: - kfree(msp); -out: - return ret; -} - -static int mv643xx_eth_shared_remove(struct platform_device *pdev) -{ - struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev); - - iounmap(msp->base); - kfree(msp); - - return 0; -} - -static struct platform_driver mv643xx_eth_shared_driver = { - .probe = mv643xx_eth_shared_probe, - .remove = mv643xx_eth_shared_remove, - .driver = { - .name = MV643XX_ETH_SHARED_NAME, - .owner = THIS_MODULE, - }, -}; - -static void phy_addr_set(struct mv643xx_eth_private *mp, int phy_addr) -{ - int addr_shift = 5 * mp->port_num; - u32 data; - - data = rdl(mp, PHY_ADDR); - data &= ~(0x1f << addr_shift); - data |= (phy_addr & 0x1f) << addr_shift; - wrl(mp, PHY_ADDR, data); -} - -static int phy_addr_get(struct mv643xx_eth_private *mp) -{ - unsigned int data; - - data = rdl(mp, PHY_ADDR); - - return (data >> (5 * mp->port_num)) & 0x1f; -} - -static void set_params(struct mv643xx_eth_private *mp, - struct mv643xx_eth_platform_data *pd) -{ - struct net_device *dev = mp->dev; - - if (is_valid_ether_addr(pd->mac_addr)) - memcpy(dev->dev_addr, pd->mac_addr, 6); - else - uc_addr_get(mp, dev->dev_addr); - - if (pd->phy_addr == -1) { - mp->shared_smi = NULL; - mp->phy_addr = -1; - } else { - mp->shared_smi = mp->shared; - if (pd->shared_smi != NULL) - mp->shared_smi = platform_get_drvdata(pd->shared_smi); - - if (pd->force_phy_addr || pd->phy_addr) { - mp->phy_addr = pd->phy_addr & 0x3f; - phy_addr_set(mp, mp->phy_addr); - } else { - mp->phy_addr = phy_addr_get(mp); - } - } - - mp->default_rx_ring_size = DEFAULT_RX_QUEUE_SIZE; - if (pd->rx_queue_size) - mp->default_rx_ring_size = pd->rx_queue_size; - mp->rx_desc_sram_addr = pd->rx_sram_addr; - mp->rx_desc_sram_size = pd->rx_sram_size; - - if (pd->rx_queue_mask) - mp->rxq_mask = pd->rx_queue_mask; - else - mp->rxq_mask = 0x01; - mp->rxq_primary = fls(mp->rxq_mask) - 1; - - mp->default_tx_ring_size = DEFAULT_TX_QUEUE_SIZE; - if (pd->tx_queue_size) - mp->default_tx_ring_size = pd->tx_queue_size; - mp->tx_desc_sram_addr = pd->tx_sram_addr; - mp->tx_desc_sram_size = pd->tx_sram_size; - - if (pd->tx_queue_mask) - mp->txq_mask = pd->tx_queue_mask; - else - mp->txq_mask = 0x01; - mp->txq_primary = fls(mp->txq_mask) - 1; -} - -static int phy_detect(struct mv643xx_eth_private *mp) -{ - unsigned int data; - unsigned int data2; - - smi_reg_read(mp, mp->phy_addr, MII_BMCR, &data); - smi_reg_write(mp, mp->phy_addr, MII_BMCR, data ^ BMCR_ANENABLE); - - smi_reg_read(mp, mp->phy_addr, MII_BMCR, &data2); - if (((data ^ data2) & BMCR_ANENABLE) == 0) - return -ENODEV; - - smi_reg_write(mp, mp->phy_addr, MII_BMCR, data); - - return 0; -} - -static int phy_init(struct mv643xx_eth_private *mp, - struct mv643xx_eth_platform_data *pd) -{ - struct ethtool_cmd cmd; - int err; - - err = phy_detect(mp); - if (err) { - dev_printk(KERN_INFO, &mp->dev->dev, - "no PHY detected at addr %d\n", mp->phy_addr); - return err; - } - phy_reset(mp); - - mp->mii.phy_id = mp->phy_addr; - mp->mii.phy_id_mask = 0x3f; - mp->mii.reg_num_mask = 0x1f; - mp->mii.dev = mp->dev; - mp->mii.mdio_read = mv643xx_eth_mdio_read; - mp->mii.mdio_write = mv643xx_eth_mdio_write; - - mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii); - - memset(&cmd, 0, sizeof(cmd)); - - cmd.port = PORT_MII; - cmd.transceiver = XCVR_INTERNAL; - cmd.phy_address = mp->phy_addr; - if (pd->speed == 0) { - cmd.autoneg = AUTONEG_ENABLE; - cmd.speed = SPEED_100; - cmd.advertising = ADVERTISED_10baseT_Half | - ADVERTISED_10baseT_Full | - ADVERTISED_100baseT_Half | - ADVERTISED_100baseT_Full; - if (mp->mii.supports_gmii) - cmd.advertising |= ADVERTISED_1000baseT_Full; - } else { - cmd.autoneg = AUTONEG_DISABLE; - cmd.speed = pd->speed; - cmd.duplex = pd->duplex; - } - - mv643xx_eth_set_settings(mp->dev, &cmd); - - return 0; -} - -static void init_pscr(struct mv643xx_eth_private *mp, int speed, int duplex) -{ - u32 pscr; - - pscr = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num)); - if (pscr & SERIAL_PORT_ENABLE) { - pscr &= ~SERIAL_PORT_ENABLE; - wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr); - } - - pscr = MAX_RX_PACKET_9700BYTE | SERIAL_PORT_CONTROL_RESERVED; - if (mp->phy_addr == -1) { - pscr |= DISABLE_AUTO_NEG_SPEED_GMII; - if (speed == SPEED_1000) - pscr |= SET_GMII_SPEED_TO_1000; - else if (speed == SPEED_100) - pscr |= SET_MII_SPEED_TO_100; - - pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL; - - pscr |= DISABLE_AUTO_NEG_FOR_DUPLEX; - if (duplex == DUPLEX_FULL) - pscr |= SET_FULL_DUPLEX_MODE; - } - - wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr); -} - -static int mv643xx_eth_probe(struct platform_device *pdev) -{ - struct mv643xx_eth_platform_data *pd; - struct mv643xx_eth_private *mp; - struct net_device *dev; - struct resource *res; - DECLARE_MAC_BUF(mac); - int err; - - pd = pdev->dev.platform_data; - if (pd == NULL) { - dev_printk(KERN_ERR, &pdev->dev, - "no mv643xx_eth_platform_data\n"); - return -ENODEV; - } - - if (pd->shared == NULL) { - dev_printk(KERN_ERR, &pdev->dev, - "no mv643xx_eth_platform_data->shared\n"); - return -ENODEV; - } - - dev = alloc_etherdev(sizeof(struct mv643xx_eth_private)); - if (!dev) - return -ENOMEM; - - mp = netdev_priv(dev); - platform_set_drvdata(pdev, mp); - - mp->shared = platform_get_drvdata(pd->shared); - mp->port_num = pd->port_number; - - mp->dev = dev; -#ifdef MV643XX_ETH_NAPI - netif_napi_add(dev, &mp->napi, mv643xx_eth_poll, 64); -#endif - - set_params(mp, pd); - - spin_lock_init(&mp->lock); - - mib_counters_clear(mp); - INIT_WORK(&mp->tx_timeout_task, tx_timeout_task); - - if (mp->phy_addr != -1) { - err = phy_init(mp, pd); - if (err) - goto out; - - SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops); - } else { - SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops_phyless); - } - init_pscr(mp, pd->speed, pd->duplex); - - - res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - BUG_ON(!res); - dev->irq = res->start; - - dev->hard_start_xmit = mv643xx_eth_xmit; - dev->open = mv643xx_eth_open; - dev->stop = mv643xx_eth_stop; - dev->set_multicast_list = mv643xx_eth_set_rx_mode; - dev->set_mac_address = mv643xx_eth_set_mac_address; - dev->do_ioctl = mv643xx_eth_ioctl; - dev->change_mtu = mv643xx_eth_change_mtu; - dev->tx_timeout = mv643xx_eth_tx_timeout; -#ifdef CONFIG_NET_POLL_CONTROLLER - dev->poll_controller = mv643xx_eth_netpoll; -#endif - dev->watchdog_timeo = 2 * HZ; - dev->base_addr = 0; - -#ifdef MV643XX_ETH_CHECKSUM_OFFLOAD_TX - /* - * Zero copy can only work if we use Discovery II memory. Else, we will - * have to map the buffers to ISA memory which is only 16 MB - */ - dev->features = NETIF_F_SG | NETIF_F_IP_CSUM; - dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM; -#endif - - SET_NETDEV_DEV(dev, &pdev->dev); - - if (mp->shared->win_protect) - wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect); - - err = register_netdev(dev); - if (err) - goto out; - - dev_printk(KERN_NOTICE, &dev->dev, "port %d with MAC address %s\n", - mp->port_num, print_mac(mac, dev->dev_addr)); - - if (dev->features & NETIF_F_SG) - dev_printk(KERN_NOTICE, &dev->dev, "scatter/gather enabled\n"); - - if (dev->features & NETIF_F_IP_CSUM) - dev_printk(KERN_NOTICE, &dev->dev, "tx checksum offload\n"); - -#ifdef MV643XX_ETH_NAPI - dev_printk(KERN_NOTICE, &dev->dev, "napi enabled\n"); -#endif - - if (mp->tx_desc_sram_size > 0) - dev_printk(KERN_NOTICE, &dev->dev, "configured with sram\n"); - - return 0; - -out: - free_netdev(dev); - - return err; -} - -static int mv643xx_eth_remove(struct platform_device *pdev) -{ - struct mv643xx_eth_private *mp = platform_get_drvdata(pdev); - - unregister_netdev(mp->dev); - flush_scheduled_work(); - free_netdev(mp->dev); - - platform_set_drvdata(pdev, NULL); - - return 0; -} - -static void mv643xx_eth_shutdown(struct platform_device *pdev) -{ - struct mv643xx_eth_private *mp = platform_get_drvdata(pdev); - - /* Mask all interrupts on ethernet port */ - wrl(mp, INT_MASK(mp->port_num), 0); - rdl(mp, INT_MASK(mp->port_num)); - - if (netif_running(mp->dev)) - port_reset(mp); -} - -static struct platform_driver mv643xx_eth_driver = { - .probe = mv643xx_eth_probe, - .remove = mv643xx_eth_remove, - .shutdown = mv643xx_eth_shutdown, - .driver = { - .name = MV643XX_ETH_NAME, - .owner = THIS_MODULE, - }, -}; - -static int __init mv643xx_eth_init_module(void) -{ - int rc; - - rc = platform_driver_register(&mv643xx_eth_shared_driver); - if (!rc) { - rc = platform_driver_register(&mv643xx_eth_driver); - if (rc) - platform_driver_unregister(&mv643xx_eth_shared_driver); - } - - return rc; -} -module_init(mv643xx_eth_init_module); - -static void __exit mv643xx_eth_cleanup_module(void) -{ - platform_driver_unregister(&mv643xx_eth_driver); - platform_driver_unregister(&mv643xx_eth_shared_driver); -} -module_exit(mv643xx_eth_cleanup_module); - -MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, " - "Manish Lachwani, Dale Farnsworth and Lennert Buytenhek"); -MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME); -MODULE_ALIAS("platform:" MV643XX_ETH_NAME); |