remove the "old" tulip forked driver
We can now use the mainline tulip driver. Signed-off-by: Florian Fainelli <florian@openwrt.org> SVN-Revision: 34559
This commit is contained in:
Florian Fainelli
parent
40ab1facd2
commit
88f6bf64cf
3 changed files with 0 additions and 1341 deletions
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/*
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* originally drivers/net/tulip/tulip.h
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* Copyright 2000,2001 The Linux Kernel Team
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* Written/copyright 1994-2001 by Donald Becker.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#ifndef __NET_TULIP_H__
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#define __NET_TULIP_H__
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#include <linux/module.h>
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#include <linux/export.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/mii.h>
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#include <linux/crc32.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/spinlock.h>
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#include <linux/netdevice.h>
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#include <linux/ethtool.h>
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#include <linux/timer.h>
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#include <linux/delay.h>
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#include <linux/etherdevice.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <linux/interrupt.h>
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#include <asm/unaligned.h>
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#include <asm/uaccess.h>
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/* undefine, or define to various debugging levels (>4 == obscene levels) */
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#define TULIP_DEBUG 1
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#define VALID_INTR 0x0001a451
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#define ADM8668_WAN_IRQ 8
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#define ADM8668_LAN_IRQ 7
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#define ADM8668_WAN_MACADDR 0xb00205ac
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#define ADM8668_LAN_MACADDR 0xb0020404
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/* Offsets to the Command and Status Registers, "CSRs". All accesses
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must be longword instructions and quadword aligned. */
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enum tulip_offsets {
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CSR0 = 0,
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CSR1 = 0x08,
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CSR2 = 0x10,
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CSR3 = 0x18,
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CSR4 = 0x20,
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CSR5 = 0x28,
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CSR6 = 0x30,
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CSR7 = 0x38,
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CSR8 = 0x40,
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CSR9 = 0x48,
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CSR10 = 0x50,
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CSR11 = 0x58,
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CSR12 = 0x60,
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CSR13 = 0x68,
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CSR14 = 0x70,
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CSR15 = 0x78,
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CSR18 = 0x88,
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CSR19 = 0x8c,
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CSR20 = 0x90,
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CSR27 = 0xAC,
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CSR28 = 0xB0,
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};
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#define RxPollInt (RxIntr|RxNoBuf|RxDied|RxJabber)
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/* The bits in the CSR5 status registers, mostly interrupt sources. */
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enum status_bits {
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TimerInt = 0x800,
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SystemError = 0x2000,
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TPLnkFail = 0x1000,
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TPLnkPass = 0x10,
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NormalIntr = 0x10000,
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AbnormalIntr = 0x8000,
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RxJabber = 0x200,
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RxDied = 0x100,
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RxNoBuf = 0x80,
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RxIntr = 0x40,
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TxFIFOUnderflow = 0x20,
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RxErrIntr = 0x10,
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TxJabber = 0x08,
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TxNoBuf = 0x04,
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TxDied = 0x02,
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TxIntr = 0x01,
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};
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/* bit mask for CSR5 TX/RX process state */
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#define CSR5_TS 0x00700000
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#define CSR5_RS 0x000e0000
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enum tulip_mode_bits {
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TxThreshold = (1 << 22),
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FullDuplex = (1 << 9),
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TxOn = 0x2000,
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AcceptBroadcast = 0x0100,
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AcceptAllMulticast = 0x0080,
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AcceptAllPhys = 0x0040,
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AcceptRunt = 0x0008,
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RxOn = 0x0002,
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RxTx = (TxOn | RxOn),
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};
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/* The Tulip Rx and Tx buffer descriptors. */
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struct tulip_rx_desc {
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__le32 status;
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__le32 length;
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__le32 buffer1;
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__le32 buffer2;
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};
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struct tulip_tx_desc {
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__le32 status;
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__le32 length;
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__le32 buffer1;
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__le32 buffer2; /* We use only buffer 1. */
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};
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enum desc_status_bits {
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DescOwned = 0x80000000,
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DescWholePkt = 0x60000000,
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DescEndPkt = 0x40000000,
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DescStartPkt = 0x20000000,
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DescEndRing = 0x02000000,
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DescUseLink = 0x01000000,
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/*
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* Error summary flag is logical or of 'CRC Error', 'Collision Seen',
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* 'Frame Too Long', 'Runt' and 'Descriptor Error' flags generated
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* within tulip chip.
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*/
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RxDescErrorSummary = 0x8000,
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RxDescCRCError = 0x0002,
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RxDescCollisionSeen = 0x0040,
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/*
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* 'Frame Too Long' flag is set if packet length including CRC exceeds
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* 1518. However, a full sized VLAN tagged frame is 1522 bytes
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* including CRC.
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*
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* The tulip chip does not block oversized frames, and if this flag is
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* set on a receive descriptor it does not indicate the frame has been
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* truncated. The receive descriptor also includes the actual length.
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* Therefore we can safety ignore this flag and check the length
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* ourselves.
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*/
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RxDescFrameTooLong = 0x0080,
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RxDescRunt = 0x0800,
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RxDescDescErr = 0x4000,
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RxWholePkt = 0x00000300,
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/*
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* Top three bits of 14 bit frame length (status bits 27-29) should
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* never be set as that would make frame over 2047 bytes. The Receive
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* Watchdog flag (bit 4) may indicate the length is over 2048 and the
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* length field is invalid.
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*/
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RxLengthOver2047 = 0x38000010
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};
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/* Keep the ring sizes a power of two for efficiency.
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Making the Tx ring too large decreases the effectiveness of channel
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bonding and packet priority.
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There are no ill effects from too-large receive rings. */
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#define TX_RING_SIZE 32
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#define RX_RING_SIZE 128
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/* The receiver on the DC21143 rev 65 can fail to close the last
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* receive descriptor in certain circumstances (see errata) when
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* using MWI. This can only occur if the receive buffer ends on
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* a cache line boundary, so the "+ 4" below ensures it doesn't.
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*/
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#define PKT_BUF_SZ (1536 + 4) /* Size of each temporary Rx buffer. */
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/* Ring-wrap flag in length field, use for last ring entry.
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0x01000000 means chain on buffer2 address,
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0x02000000 means use the ring start address in CSR2/3.
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Note: Some work-alike chips do not function correctly in chained mode.
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The ASIX chip works only in chained mode.
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Thus we indicates ring mode, but always write the 'next' field for
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chained mode as well.
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*/
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#define DESC_RING_WRAP 0x02000000
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struct ring_info {
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struct sk_buff *skb;
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dma_addr_t mapping;
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};
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struct tulip_private {
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struct tulip_rx_desc *rx_ring;
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struct tulip_tx_desc *tx_ring;
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dma_addr_t rx_ring_dma;
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dma_addr_t tx_ring_dma;
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/* The saved address of a sent-in-place packet/buffer, for skfree(). */
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struct ring_info tx_buffers[TX_RING_SIZE];
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/* The addresses of receive-in-place skbuffs. */
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struct ring_info rx_buffers[RX_RING_SIZE];
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struct napi_struct napi;
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struct net_device_stats stats;
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struct timer_list oom_timer; /* Out of memory timer. */
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u32 mc_filter[2];
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spinlock_t lock;
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unsigned int cur_rx, cur_tx; /* The next free ring entry */
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unsigned int dirty_rx, dirty_tx; /* The ring entries to be free()ed. */
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unsigned int csr0; /* CSR0 setting. */
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unsigned int csr6; /* Current CSR6 control settings. */
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void (*link_change) (struct net_device * dev, int csr5);
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struct platform_device *pdev;
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unsigned long nir;
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void __iomem *base_addr;
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int pad0; /* Used for 8-byte alignment */
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struct net_device *dev;
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};
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/* interrupt.c */
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irqreturn_t tulip_interrupt(int irq, void *dev_instance);
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int tulip_refill_rx(struct net_device *dev);
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int tulip_poll(struct napi_struct *napi, int budget);
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/* tulip_core.c */
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extern int tulip_debug;
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void oom_timer(unsigned long data);
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static inline void tulip_start_rxtx(struct tulip_private *tp)
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{
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void __iomem *ioaddr = tp->base_addr;
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iowrite32(tp->csr6 | RxTx, ioaddr + CSR6);
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barrier();
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(void) ioread32(ioaddr + CSR6); /* mmio sync */
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}
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static inline void tulip_stop_rxtx(struct tulip_private *tp)
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{
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void __iomem *ioaddr = tp->base_addr;
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u32 csr6 = ioread32(ioaddr + CSR6);
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if (csr6 & RxTx) {
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unsigned i=1300/10;
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iowrite32(csr6 & ~RxTx, ioaddr + CSR6);
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barrier();
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/* wait until in-flight frame completes.
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* Max time @ 10BT: 1500*8b/10Mbps == 1200us (+ 100us margin)
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* Typically expect this loop to end in < 50 us on 100BT.
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*/
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while (--i && (ioread32(ioaddr + CSR5) & (CSR5_TS|CSR5_RS)))
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udelay(10);
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if (!i)
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printk(KERN_DEBUG "fixme: tulip_stop_rxtx() failed"
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" (CSR5 0x%x CSR6 0x%x)\n",
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ioread32(ioaddr + CSR5),
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ioread32(ioaddr + CSR6));
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}
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}
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static inline void tulip_restart_rxtx(struct tulip_private *tp)
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{
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tulip_stop_rxtx(tp);
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udelay(5);
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tulip_start_rxtx(tp);
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}
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static inline void tulip_tx_timeout_complete(struct tulip_private *tp, void __iomem *ioaddr)
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{
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/* Stop and restart the chip's Tx processes. */
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tulip_restart_rxtx(tp);
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/* Trigger an immediate transmit demand. */
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iowrite32(0, ioaddr + CSR1);
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tp->stats.tx_errors++;
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}
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#endif /* __NET_TULIP_H__ */
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/*
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* originally drivers/net/tulip_core.c
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* Copyright 2000,2001 The Linux Kernel Team
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* Written/copyright 1994-2001 by Donald Becker.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#define DRV_NAME "tulip"
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#define DRV_VERSION "1.1.15-NAPI" /* Keep at least for test */
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#define DRV_RELDATE "Feb 27, 2007"
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#include "net.h"
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static char version[] __devinitdata =
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"ADM8668net driver version " DRV_VERSION " (" DRV_RELDATE ")\n";
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#define MAX_UNITS 2
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/*
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Set the bus performance register.
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Typical: Set 16 longword cache alignment, no burst limit.
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Cache alignment bits 15:14 Burst length 13:8
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0000 No alignment 0x00000000 unlimited 0800 8 longwords
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4000 8 longwords 0100 1 longword 1000 16 longwords
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8000 16 longwords 0200 2 longwords 2000 32 longwords
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C000 32 longwords 0400 4 longwords
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Warning: many older 486 systems are broken and require setting 0x00A04800
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8 longword cache alignment, 8 longword burst.
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ToDo: Non-Intel setting could be better.
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*/
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//static int csr0 = 0x00200000 | 0x4000;
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static int csr0 = 0;
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/* Operational parameters that usually are not changed. */
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/* Time in jiffies before concluding the transmitter is hung. */
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#define TX_TIMEOUT (4*HZ)
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MODULE_AUTHOR("Scott Nicholas <neutronscott@scottn.us>");
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MODULE_DESCRIPTION("ADM8668 new ethernet driver.");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(DRV_VERSION);
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#ifdef TULIP_DEBUG
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int tulip_debug = TULIP_DEBUG;
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#else
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int tulip_debug = 1;
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#endif
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static void tulip_tx_timeout(struct net_device *dev);
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static void tulip_init_ring(struct net_device *dev);
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static void tulip_free_ring(struct net_device *dev);
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static netdev_tx_t tulip_start_xmit(struct sk_buff *skb,
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struct net_device *dev);
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static int tulip_open(struct net_device *dev);
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static int tulip_close(struct net_device *dev);
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static void tulip_up(struct net_device *dev);
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static void tulip_down(struct net_device *dev);
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static struct net_device_stats *tulip_get_stats(struct net_device *dev);
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//static int private_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
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static void set_rx_mode(struct net_device *dev);
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#ifdef CONFIG_NET_POLL_CONTROLLER
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static void poll_tulip(struct net_device *dev);
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#endif
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static void tulip_up(struct net_device *dev)
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{
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struct tulip_private *tp = netdev_priv(dev);
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void __iomem *ioaddr = tp->base_addr;
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napi_enable(&tp->napi);
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/* Reset the chip, holding bit 0 set at least 50 PCI cycles. */
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iowrite32(0x00000001, ioaddr + CSR0);
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/* Deassert reset.
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Wait the specified 50 PCI cycles after a reset by initializing
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Tx and Rx queues and the address filter list. */
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iowrite32(tp->csr0, ioaddr + CSR0);
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if (tulip_debug > 1)
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printk(KERN_DEBUG "%s: tulip_up(), irq==%d\n",
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dev->name, dev->irq);
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iowrite32(tp->rx_ring_dma, ioaddr + CSR3);
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iowrite32(tp->tx_ring_dma, ioaddr + CSR4);
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tp->cur_rx = tp->cur_tx = 0;
|
|
||||||
tp->dirty_rx = tp->dirty_tx = 0;
|
|
||||||
|
|
||||||
/* set mac address */
|
|
||||||
iowrite32(get_unaligned_le32(dev->dev_addr), ioaddr + 0xA4);
|
|
||||||
iowrite32(get_unaligned_le16(dev->dev_addr + 4), ioaddr + 0xA8);
|
|
||||||
iowrite32(0, ioaddr + CSR27);
|
|
||||||
iowrite32(0, ioaddr + CSR28);
|
|
||||||
|
|
||||||
tp->csr6 = 0;
|
|
||||||
|
|
||||||
/* Enable automatic Tx underrun recovery. */
|
|
||||||
iowrite32(ioread32(ioaddr + CSR18) | 1, ioaddr + CSR18);
|
|
||||||
tp->csr6 = 0x00040000;
|
|
||||||
|
|
||||||
/* Start the chip's Tx to process setup frame. */
|
|
||||||
tulip_stop_rxtx(tp);
|
|
||||||
barrier();
|
|
||||||
udelay(5);
|
|
||||||
iowrite32(tp->csr6 | TxOn, ioaddr + CSR6);
|
|
||||||
|
|
||||||
/* Enable interrupts by setting the interrupt mask. */
|
|
||||||
iowrite32(VALID_INTR, ioaddr + CSR5);
|
|
||||||
iowrite32(VALID_INTR, ioaddr + CSR7);
|
|
||||||
tulip_start_rxtx(tp);
|
|
||||||
iowrite32(0, ioaddr + CSR2); /* Rx poll demand */
|
|
||||||
|
|
||||||
if (tulip_debug > 2) {
|
|
||||||
printk(KERN_DEBUG "%s: Done tulip_up(), CSR0 %08x, CSR5 %08x CSR6 %08x\n",
|
|
||||||
dev->name, ioread32(ioaddr + CSR0),
|
|
||||||
ioread32(ioaddr + CSR5),
|
|
||||||
ioread32(ioaddr + CSR6));
|
|
||||||
}
|
|
||||||
|
|
||||||
init_timer(&tp->oom_timer);
|
|
||||||
tp->oom_timer.data = (unsigned long)dev;
|
|
||||||
tp->oom_timer.function = oom_timer;
|
|
||||||
}
|
|
||||||
|
|
||||||
static int
|
|
||||||
tulip_open(struct net_device *dev)
|
|
||||||
{
|
|
||||||
int retval;
|
|
||||||
|
|
||||||
tulip_init_ring (dev);
|
|
||||||
|
|
||||||
retval = request_irq(dev->irq, tulip_interrupt, 0, dev->name, dev);
|
|
||||||
if (retval)
|
|
||||||
goto free_ring;
|
|
||||||
|
|
||||||
tulip_up (dev);
|
|
||||||
|
|
||||||
netif_start_queue (dev);
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
|
|
||||||
free_ring:
|
|
||||||
tulip_free_ring (dev);
|
|
||||||
return retval;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
static void tulip_tx_timeout(struct net_device *dev)
|
|
||||||
{
|
|
||||||
struct tulip_private *tp = netdev_priv(dev);
|
|
||||||
void __iomem *ioaddr = tp->base_addr;
|
|
||||||
unsigned long flags;
|
|
||||||
|
|
||||||
spin_lock_irqsave (&tp->lock, flags);
|
|
||||||
|
|
||||||
dev_warn(&dev->dev,
|
|
||||||
"Transmit timed out, status %08x, CSR12 %08x, resetting...\n",
|
|
||||||
ioread32(ioaddr + CSR5), ioread32(ioaddr + CSR12));
|
|
||||||
|
|
||||||
tulip_tx_timeout_complete(tp, ioaddr);
|
|
||||||
|
|
||||||
spin_unlock_irqrestore (&tp->lock, flags);
|
|
||||||
dev->trans_start = jiffies; /* prevent tx timeout */
|
|
||||||
netif_wake_queue (dev);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/* Initialize the Rx and Tx rings, along with various 'dev' bits. */
|
|
||||||
static void tulip_init_ring(struct net_device *dev)
|
|
||||||
{
|
|
||||||
struct tulip_private *tp = netdev_priv(dev);
|
|
||||||
int i;
|
|
||||||
|
|
||||||
tp->nir = 0;
|
|
||||||
|
|
||||||
for (i = 0; i < RX_RING_SIZE; i++) {
|
|
||||||
tp->rx_ring[i].status = 0x00000000;
|
|
||||||
tp->rx_ring[i].length = cpu_to_le32(PKT_BUF_SZ);
|
|
||||||
tp->rx_ring[i].buffer2 = cpu_to_le32(tp->rx_ring_dma + sizeof(struct tulip_rx_desc) * (i + 1));
|
|
||||||
tp->rx_buffers[i].skb = NULL;
|
|
||||||
tp->rx_buffers[i].mapping = 0;
|
|
||||||
}
|
|
||||||
/* Mark the last entry as wrapping the ring. */
|
|
||||||
tp->rx_ring[i-1].length = cpu_to_le32(PKT_BUF_SZ | DESC_RING_WRAP);
|
|
||||||
tp->rx_ring[i-1].buffer2 = cpu_to_le32(tp->rx_ring_dma);
|
|
||||||
|
|
||||||
for (i = 0; i < RX_RING_SIZE; i++) {
|
|
||||||
dma_addr_t mapping;
|
|
||||||
/* Note the receive buffer must be longword aligned.
|
|
||||||
dev_alloc_skb() provides 16 byte alignment. But do *not*
|
|
||||||
use skb_reserve() to align the IP header! */
|
|
||||||
struct sk_buff *skb = dev_alloc_skb(PKT_BUF_SZ);
|
|
||||||
tp->rx_buffers[i].skb = skb;
|
|
||||||
if (skb == NULL)
|
|
||||||
break;
|
|
||||||
mapping = dma_map_single(&dev->dev, skb->data,
|
|
||||||
PKT_BUF_SZ, DMA_FROM_DEVICE);
|
|
||||||
tp->rx_buffers[i].mapping = mapping;
|
|
||||||
skb->dev = dev; /* Mark as being used by this device. */
|
|
||||||
tp->rx_ring[i].status = cpu_to_le32(DescOwned); /* Owned by Tulip chip */
|
|
||||||
tp->rx_ring[i].buffer1 = cpu_to_le32(mapping);
|
|
||||||
}
|
|
||||||
tp->dirty_rx = (unsigned int)(i - RX_RING_SIZE);
|
|
||||||
|
|
||||||
/* The Tx buffer descriptor is filled in as needed, but we
|
|
||||||
do need to clear the ownership bit. */
|
|
||||||
for (i = 0; i < TX_RING_SIZE; i++) {
|
|
||||||
tp->tx_buffers[i].skb = NULL;
|
|
||||||
tp->tx_buffers[i].mapping = 0;
|
|
||||||
tp->tx_ring[i].status = 0x00000000;
|
|
||||||
tp->tx_ring[i].buffer2 = cpu_to_le32(tp->tx_ring_dma + sizeof(struct tulip_tx_desc) * (i + 1));
|
|
||||||
}
|
|
||||||
tp->tx_ring[i-1].buffer2 = cpu_to_le32(tp->tx_ring_dma);
|
|
||||||
}
|
|
||||||
|
|
||||||
static netdev_tx_t
|
|
||||||
tulip_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
|
||||||
{
|
|
||||||
struct tulip_private *tp = netdev_priv(dev);
|
|
||||||
int entry;
|
|
||||||
u32 flag;
|
|
||||||
dma_addr_t mapping;
|
|
||||||
unsigned long flags;
|
|
||||||
|
|
||||||
spin_lock_irqsave(&tp->lock, flags);
|
|
||||||
|
|
||||||
/* Calculate the next Tx descriptor entry. */
|
|
||||||
entry = tp->cur_tx % TX_RING_SIZE;
|
|
||||||
|
|
||||||
tp->tx_buffers[entry].skb = skb;
|
|
||||||
mapping = dma_map_single(&tp->pdev->dev, skb->data, skb->len,
|
|
||||||
DMA_TO_DEVICE);
|
|
||||||
tp->tx_buffers[entry].mapping = mapping;
|
|
||||||
tp->tx_ring[entry].buffer1 = cpu_to_le32(mapping);
|
|
||||||
|
|
||||||
if (tp->cur_tx - tp->dirty_tx < TX_RING_SIZE/2) {/* Typical path */
|
|
||||||
flag = 0x60000000; /* No interrupt */
|
|
||||||
} else if (tp->cur_tx - tp->dirty_tx == TX_RING_SIZE/2) {
|
|
||||||
flag = 0xe0000000; /* Tx-done intr. */
|
|
||||||
} else if (tp->cur_tx - tp->dirty_tx < TX_RING_SIZE - 2) {
|
|
||||||
flag = 0x60000000; /* No Tx-done intr. */
|
|
||||||
} else { /* Leave room for set_rx_mode() to fill entries. */
|
|
||||||
flag = 0xe0000000; /* Tx-done intr. */
|
|
||||||
netif_stop_queue(dev);
|
|
||||||
}
|
|
||||||
if (entry == TX_RING_SIZE-1)
|
|
||||||
flag = 0xe0000000 | DESC_RING_WRAP;
|
|
||||||
|
|
||||||
tp->tx_ring[entry].length = cpu_to_le32(skb->len | flag);
|
|
||||||
/* if we were using Transmit Automatic Polling, we would need a
|
|
||||||
* wmb() here. */
|
|
||||||
tp->tx_ring[entry].status = cpu_to_le32(DescOwned);
|
|
||||||
wmb();
|
|
||||||
|
|
||||||
tp->cur_tx++;
|
|
||||||
|
|
||||||
/* Trigger an immediate transmit demand. */
|
|
||||||
iowrite32(0, tp->base_addr + CSR1);
|
|
||||||
|
|
||||||
spin_unlock_irqrestore(&tp->lock, flags);
|
|
||||||
|
|
||||||
return NETDEV_TX_OK;
|
|
||||||
}
|
|
||||||
|
|
||||||
static void tulip_clean_tx_ring(struct tulip_private *tp)
|
|
||||||
{
|
|
||||||
unsigned int dirty_tx;
|
|
||||||
|
|
||||||
for (dirty_tx = tp->dirty_tx ; tp->cur_tx - dirty_tx > 0;
|
|
||||||
dirty_tx++) {
|
|
||||||
int entry = dirty_tx % TX_RING_SIZE;
|
|
||||||
int status = le32_to_cpu(tp->tx_ring[entry].status);
|
|
||||||
|
|
||||||
if (status < 0) {
|
|
||||||
tp->stats.tx_errors++; /* It wasn't Txed */
|
|
||||||
tp->tx_ring[entry].status = 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
dma_unmap_single(&tp->pdev->dev, tp->tx_buffers[entry].mapping,
|
|
||||||
tp->tx_buffers[entry].skb->len,
|
|
||||||
DMA_TO_DEVICE);
|
|
||||||
|
|
||||||
/* Free the original skb. */
|
|
||||||
dev_kfree_skb_irq(tp->tx_buffers[entry].skb);
|
|
||||||
tp->tx_buffers[entry].skb = NULL;
|
|
||||||
tp->tx_buffers[entry].mapping = 0;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
static void tulip_down (struct net_device *dev)
|
|
||||||
{
|
|
||||||
struct tulip_private *tp = netdev_priv(dev);
|
|
||||||
void __iomem *ioaddr = tp->base_addr;
|
|
||||||
unsigned long flags;
|
|
||||||
|
|
||||||
napi_disable(&tp->napi);
|
|
||||||
del_timer_sync (&tp->oom_timer);
|
|
||||||
spin_lock_irqsave (&tp->lock, flags);
|
|
||||||
|
|
||||||
/* Disable interrupts by clearing the interrupt mask. */
|
|
||||||
iowrite32 (0x00000000, ioaddr + CSR7);
|
|
||||||
|
|
||||||
/* Stop the Tx and Rx processes. */
|
|
||||||
tulip_stop_rxtx(tp);
|
|
||||||
|
|
||||||
/* prepare receive buffers */
|
|
||||||
tulip_refill_rx(dev);
|
|
||||||
|
|
||||||
/* release any unconsumed transmit buffers */
|
|
||||||
tulip_clean_tx_ring(tp);
|
|
||||||
|
|
||||||
if (ioread32 (ioaddr + CSR6) != 0xffffffff)
|
|
||||||
tp->stats.rx_missed_errors += ioread32 (ioaddr + CSR8) & 0xffff;
|
|
||||||
|
|
||||||
spin_unlock_irqrestore (&tp->lock, flags);
|
|
||||||
}
|
|
||||||
|
|
||||||
static void tulip_free_ring (struct net_device *dev)
|
|
||||||
{
|
|
||||||
struct tulip_private *tp = netdev_priv(dev);
|
|
||||||
int i;
|
|
||||||
|
|
||||||
/* Free all the skbuffs in the Rx queue. */
|
|
||||||
for (i = 0; i < RX_RING_SIZE; i++) {
|
|
||||||
struct sk_buff *skb = tp->rx_buffers[i].skb;
|
|
||||||
dma_addr_t mapping = tp->rx_buffers[i].mapping;
|
|
||||||
|
|
||||||
tp->rx_buffers[i].skb = NULL;
|
|
||||||
tp->rx_buffers[i].mapping = 0;
|
|
||||||
|
|
||||||
tp->rx_ring[i].status = 0; /* Not owned by Tulip chip. */
|
|
||||||
tp->rx_ring[i].length = 0;
|
|
||||||
/* An invalid address. */
|
|
||||||
tp->rx_ring[i].buffer1 = cpu_to_le32(0xBADF00D0);
|
|
||||||
if (skb) {
|
|
||||||
dma_unmap_single(&tp->pdev->dev, mapping, PKT_BUF_SZ,
|
|
||||||
DMA_FROM_DEVICE);
|
|
||||||
dev_kfree_skb (skb);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
for (i = 0; i < TX_RING_SIZE; i++) {
|
|
||||||
struct sk_buff *skb = tp->tx_buffers[i].skb;
|
|
||||||
|
|
||||||
if (skb != NULL) {
|
|
||||||
dma_unmap_single(&tp->pdev->dev,
|
|
||||||
tp->tx_buffers[i].mapping, skb->len, DMA_TO_DEVICE);
|
|
||||||
dev_kfree_skb (skb);
|
|
||||||
}
|
|
||||||
tp->tx_buffers[i].skb = NULL;
|
|
||||||
tp->tx_buffers[i].mapping = 0;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
static int tulip_close (struct net_device *dev)
|
|
||||||
{
|
|
||||||
struct tulip_private *tp = netdev_priv(dev);
|
|
||||||
void __iomem *ioaddr = tp->base_addr;
|
|
||||||
|
|
||||||
netif_stop_queue (dev);
|
|
||||||
|
|
||||||
tulip_down (dev);
|
|
||||||
|
|
||||||
if (tulip_debug > 1)
|
|
||||||
dev_printk(KERN_DEBUG, &dev->dev,
|
|
||||||
"Shutting down ethercard, status was %02x\n",
|
|
||||||
ioread32 (ioaddr + CSR5));
|
|
||||||
|
|
||||||
free_irq (dev->irq, dev);
|
|
||||||
|
|
||||||
tulip_free_ring (dev);
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
static struct net_device_stats *tulip_get_stats(struct net_device *dev)
|
|
||||||
{
|
|
||||||
struct tulip_private *tp = netdev_priv(dev);
|
|
||||||
void __iomem *ioaddr = tp->base_addr;
|
|
||||||
|
|
||||||
if (netif_running(dev)) {
|
|
||||||
unsigned long flags;
|
|
||||||
|
|
||||||
spin_lock_irqsave (&tp->lock, flags);
|
|
||||||
|
|
||||||
tp->stats.rx_missed_errors += ioread32(ioaddr + CSR8) & 0xffff;
|
|
||||||
|
|
||||||
spin_unlock_irqrestore(&tp->lock, flags);
|
|
||||||
}
|
|
||||||
|
|
||||||
return &tp->stats;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
static void tulip_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
|
|
||||||
{
|
|
||||||
strcpy(info->driver, DRV_NAME);
|
|
||||||
strcpy(info->version, DRV_VERSION);
|
|
||||||
strcpy(info->bus_info, "mmio");
|
|
||||||
}
|
|
||||||
|
|
||||||
static const struct ethtool_ops ops = {
|
|
||||||
.get_drvinfo = tulip_get_drvinfo
|
|
||||||
};
|
|
||||||
|
|
||||||
static void set_rx_mode(struct net_device *dev)
|
|
||||||
{
|
|
||||||
struct tulip_private *tp = netdev_priv(dev);
|
|
||||||
void __iomem *ioaddr = tp->base_addr;
|
|
||||||
int csr6;
|
|
||||||
|
|
||||||
csr6 = ioread32(ioaddr + CSR6) & ~0x00D5;
|
|
||||||
|
|
||||||
tp->csr6 &= ~0x00D5;
|
|
||||||
if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
|
|
||||||
tp->csr6 |= AcceptAllMulticast | AcceptAllPhys;
|
|
||||||
csr6 |= AcceptAllMulticast | AcceptAllPhys;
|
|
||||||
} else if ((netdev_mc_count(dev) > 1000) ||
|
|
||||||
(dev->flags & IFF_ALLMULTI)) {
|
|
||||||
/* Too many to filter well -- accept all multicasts. */
|
|
||||||
tp->csr6 |= AcceptAllMulticast;
|
|
||||||
csr6 |= AcceptAllMulticast;
|
|
||||||
} else {
|
|
||||||
/* Some work-alikes have only a 64-entry hash filter table. */
|
|
||||||
/* Should verify correctness on big-endian/__powerpc__ */
|
|
||||||
struct netdev_hw_addr *ha;
|
|
||||||
if (netdev_mc_count(dev) > 64) {
|
|
||||||
/* Arbitrary non-effective limit. */
|
|
||||||
tp->csr6 |= AcceptAllMulticast;
|
|
||||||
csr6 |= AcceptAllMulticast;
|
|
||||||
} else {
|
|
||||||
u32 mc_filter[2] = {0, 0}; /* Multicast hash filter */
|
|
||||||
int filterbit;
|
|
||||||
netdev_for_each_mc_addr(ha, dev) {
|
|
||||||
filterbit = ether_crc_le(ETH_ALEN, ha->addr);
|
|
||||||
filterbit &= 0x3f;
|
|
||||||
mc_filter[filterbit >> 5] |= 1 << (filterbit & 31);
|
|
||||||
if (tulip_debug > 2)
|
|
||||||
dev_info(&dev->dev,
|
|
||||||
"Added filter for %pM %08x bit %d\n",
|
|
||||||
ha->addr,
|
|
||||||
ether_crc(ETH_ALEN, ha->addr),
|
|
||||||
filterbit);
|
|
||||||
}
|
|
||||||
if (mc_filter[0] == tp->mc_filter[0] &&
|
|
||||||
mc_filter[1] == tp->mc_filter[1])
|
|
||||||
; /* No change. */
|
|
||||||
iowrite32(mc_filter[0], ioaddr + CSR27);
|
|
||||||
iowrite32(mc_filter[1], ioaddr + CSR28);
|
|
||||||
tp->mc_filter[0] = mc_filter[0];
|
|
||||||
tp->mc_filter[1] = mc_filter[1];
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (dev->irq == ADM8668_LAN_IRQ)
|
|
||||||
csr6 |= (1 << 9); /* force 100Mbps full duplex */
|
|
||||||
// csr6 |= 1; /* pad 2 bytes. vlan? */
|
|
||||||
|
|
||||||
iowrite32(csr6, ioaddr + CSR6);
|
|
||||||
}
|
|
||||||
|
|
||||||
static const struct net_device_ops tulip_netdev_ops = {
|
|
||||||
.ndo_open = tulip_open,
|
|
||||||
.ndo_start_xmit = tulip_start_xmit,
|
|
||||||
.ndo_tx_timeout = tulip_tx_timeout,
|
|
||||||
.ndo_stop = tulip_close,
|
|
||||||
.ndo_get_stats = tulip_get_stats,
|
|
||||||
.ndo_set_rx_mode = set_rx_mode,
|
|
||||||
.ndo_change_mtu = eth_change_mtu,
|
|
||||||
.ndo_set_mac_address = eth_mac_addr,
|
|
||||||
.ndo_validate_addr = eth_validate_addr,
|
|
||||||
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
||||||
.ndo_poll_controller = poll_tulip,
|
|
||||||
#endif
|
|
||||||
};
|
|
||||||
|
|
||||||
static int __devinit adm8668net_probe(struct platform_device *pdev)
|
|
||||||
{
|
|
||||||
struct tulip_private *tp;
|
|
||||||
struct net_device *dev;
|
|
||||||
struct resource *res;
|
|
||||||
void __iomem *ioaddr;
|
|
||||||
int irq;
|
|
||||||
|
|
||||||
if (pdev->id < 0 || pdev->id >= MAX_UNITS)
|
|
||||||
return -EINVAL;
|
|
||||||
|
|
||||||
if (!(res = platform_get_resource(pdev, IORESOURCE_IRQ, 0)))
|
|
||||||
return -ENODEV;
|
|
||||||
irq = res->start;
|
|
||||||
if (!(res = platform_get_resource(pdev, IORESOURCE_MEM, 0)))
|
|
||||||
return -ENODEV;
|
|
||||||
if (!(ioaddr = ioremap(res->start, res->end - res->start)))
|
|
||||||
return -ENODEV;
|
|
||||||
if (!(dev = alloc_etherdev(sizeof (*tp))))
|
|
||||||
return -ENOMEM;
|
|
||||||
|
|
||||||
/* setup net dev */
|
|
||||||
dev->base_addr = (unsigned long)res->start;
|
|
||||||
dev->irq = irq;
|
|
||||||
SET_NETDEV_DEV(dev, &pdev->dev);
|
|
||||||
|
|
||||||
/* tulip private struct */
|
|
||||||
tp = netdev_priv(dev);
|
|
||||||
tp->dev = dev;
|
|
||||||
tp->base_addr = ioaddr;
|
|
||||||
tp->csr0 = csr0;
|
|
||||||
tp->pdev = pdev;
|
|
||||||
tp->rx_ring = dma_alloc_coherent(&pdev->dev,
|
|
||||||
sizeof(struct tulip_rx_desc) * RX_RING_SIZE +
|
|
||||||
sizeof(struct tulip_tx_desc) * TX_RING_SIZE,
|
|
||||||
&tp->rx_ring_dma, GFP_KERNEL);
|
|
||||||
if (!tp->rx_ring)
|
|
||||||
return -ENODEV;
|
|
||||||
tp->tx_ring = (struct tulip_tx_desc *)(tp->rx_ring + RX_RING_SIZE);
|
|
||||||
tp->tx_ring_dma = tp->rx_ring_dma + sizeof(struct tulip_rx_desc) * RX_RING_SIZE;
|
|
||||||
|
|
||||||
spin_lock_init(&tp->lock);
|
|
||||||
|
|
||||||
/* Stop the chip's Tx and Rx processes. */
|
|
||||||
tulip_stop_rxtx(tp);
|
|
||||||
|
|
||||||
/* Clear the missed-packet counter. */
|
|
||||||
ioread32(ioaddr + CSR8);
|
|
||||||
|
|
||||||
/* Addresses are stored in BSP area of NOR flash */
|
|
||||||
if (irq == ADM8668_WAN_IRQ)
|
|
||||||
memcpy(dev->dev_addr, (char *)ADM8668_WAN_MACADDR, 6);
|
|
||||||
else
|
|
||||||
memcpy(dev->dev_addr, (char *)ADM8668_LAN_MACADDR, 6);
|
|
||||||
|
|
||||||
/* The Tulip-specific entries in the device structure. */
|
|
||||||
dev->netdev_ops = &tulip_netdev_ops;
|
|
||||||
dev->watchdog_timeo = TX_TIMEOUT;
|
|
||||||
netif_napi_add(dev, &tp->napi, tulip_poll, 16);
|
|
||||||
SET_ETHTOOL_OPS(dev, &ops);
|
|
||||||
|
|
||||||
if (register_netdev(dev))
|
|
||||||
goto err_out_free_ring;
|
|
||||||
|
|
||||||
dev_info(&dev->dev,
|
|
||||||
"ADM8668net at MMIO %#lx %pM, IRQ %d\n",
|
|
||||||
(unsigned long)dev->base_addr, dev->dev_addr, irq);
|
|
||||||
|
|
||||||
platform_set_drvdata(pdev, dev);
|
|
||||||
return 0;
|
|
||||||
|
|
||||||
err_out_free_ring:
|
|
||||||
dma_free_coherent(&pdev->dev,
|
|
||||||
sizeof (struct tulip_rx_desc) * RX_RING_SIZE +
|
|
||||||
sizeof (struct tulip_tx_desc) * TX_RING_SIZE,
|
|
||||||
tp->rx_ring, tp->rx_ring_dma);
|
|
||||||
return -ENODEV;
|
|
||||||
}
|
|
||||||
|
|
||||||
static int __devexit adm8668net_remove(struct platform_device *pdev)
|
|
||||||
{
|
|
||||||
struct net_device *dev = platform_get_drvdata (pdev);
|
|
||||||
struct tulip_private *tp;
|
|
||||||
|
|
||||||
if (!dev)
|
|
||||||
return -ENODEV;
|
|
||||||
|
|
||||||
tp = netdev_priv(dev);
|
|
||||||
unregister_netdev(dev);
|
|
||||||
dma_free_coherent(&pdev->dev,
|
|
||||||
sizeof (struct tulip_rx_desc) * RX_RING_SIZE +
|
|
||||||
sizeof (struct tulip_tx_desc) * TX_RING_SIZE,
|
|
||||||
tp->rx_ring, tp->rx_ring_dma);
|
|
||||||
iounmap(tp->base_addr);
|
|
||||||
free_netdev(dev);
|
|
||||||
platform_set_drvdata(pdev, NULL);
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
||||||
/*
|
|
||||||
* Polling 'interrupt' - used by things like netconsole to send skbs
|
|
||||||
* without having to re-enable interrupts. It's not called while
|
|
||||||
* the interrupt routine is executing.
|
|
||||||
*/
|
|
||||||
|
|
||||||
static void poll_tulip (struct net_device *dev)
|
|
||||||
{
|
|
||||||
/* disable_irq here is not very nice, but with the lockless
|
|
||||||
interrupt handler we have no other choice. */
|
|
||||||
disable_irq(dev->irq);
|
|
||||||
tulip_interrupt(dev->irq, dev);
|
|
||||||
enable_irq(dev->irq);
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
|
|
||||||
static struct platform_driver adm8668net_platform_driver = {
|
|
||||||
.probe = adm8668net_probe,
|
|
||||||
.remove = __devexit_p(adm8668net_remove),
|
|
||||||
.driver = {
|
|
||||||
.owner = THIS_MODULE,
|
|
||||||
.name = "adm8668_eth"
|
|
||||||
},
|
|
||||||
};
|
|
||||||
|
|
||||||
static int __init adm8668net_init(void)
|
|
||||||
{
|
|
||||||
pr_info("%s", version);
|
|
||||||
return platform_driver_register(&adm8668net_platform_driver);
|
|
||||||
}
|
|
||||||
|
|
||||||
static void __exit adm8668net_exit(void)
|
|
||||||
{
|
|
||||||
platform_driver_unregister(&adm8668net_platform_driver);
|
|
||||||
}
|
|
||||||
|
|
||||||
module_init(adm8668net_init);
|
|
||||||
module_exit(adm8668net_exit);
|
|
||||||
|
|
@ -1,446 +0,0 @@
|
||||||
/*
|
|
||||||
* originally drivers/net/tulip/interrupt.c
|
|
||||||
* Copyright 2000,2001 The Linux Kernel Team
|
|
||||||
* Written/copyright 1994-2001 by Donald Becker.
|
|
||||||
*
|
|
||||||
* This file is subject to the terms and conditions of the GNU General Public
|
|
||||||
* License. See the file "COPYING" in the main directory of this archive
|
|
||||||
* for more details.
|
|
||||||
*/
|
|
||||||
|
|
||||||
#include "net.h"
|
|
||||||
|
|
||||||
int tulip_refill_rx(struct net_device *dev)
|
|
||||||
{
|
|
||||||
struct tulip_private *tp = netdev_priv(dev);
|
|
||||||
int entry;
|
|
||||||
int refilled = 0;
|
|
||||||
|
|
||||||
/* Refill the Rx ring buffers. */
|
|
||||||
for (; tp->cur_rx - tp->dirty_rx > 0; tp->dirty_rx++) {
|
|
||||||
entry = tp->dirty_rx % RX_RING_SIZE;
|
|
||||||
if (tp->rx_buffers[entry].skb == NULL) {
|
|
||||||
struct sk_buff *skb;
|
|
||||||
dma_addr_t mapping;
|
|
||||||
|
|
||||||
skb = tp->rx_buffers[entry].skb = dev_alloc_skb(PKT_BUF_SZ);
|
|
||||||
if (skb == NULL)
|
|
||||||
break;
|
|
||||||
|
|
||||||
mapping = dma_map_single(&dev->dev, skb->data,
|
|
||||||
PKT_BUF_SZ, DMA_FROM_DEVICE);
|
|
||||||
tp->rx_buffers[entry].mapping = mapping;
|
|
||||||
|
|
||||||
skb->dev = dev; /* Mark as being used by this device. */
|
|
||||||
tp->rx_ring[entry].buffer1 = cpu_to_le32(mapping);
|
|
||||||
refilled++;
|
|
||||||
}
|
|
||||||
tp->rx_ring[entry].status = cpu_to_le32(DescOwned);
|
|
||||||
}
|
|
||||||
return refilled;
|
|
||||||
}
|
|
||||||
|
|
||||||
void oom_timer(unsigned long data)
|
|
||||||
{
|
|
||||||
struct net_device *dev = (struct net_device *)data;
|
|
||||||
struct tulip_private *tp = netdev_priv(dev);
|
|
||||||
napi_schedule(&tp->napi);
|
|
||||||
}
|
|
||||||
|
|
||||||
int tulip_poll(struct napi_struct *napi, int budget)
|
|
||||||
{
|
|
||||||
struct tulip_private *tp = container_of(napi, struct tulip_private, napi);
|
|
||||||
struct net_device *dev = tp->dev;
|
|
||||||
int entry = tp->cur_rx % RX_RING_SIZE;
|
|
||||||
int work_done = 0;
|
|
||||||
|
|
||||||
if (tulip_debug > 4)
|
|
||||||
printk(KERN_DEBUG " In tulip_rx(), entry %d %08x\n",
|
|
||||||
entry, tp->rx_ring[entry].status);
|
|
||||||
|
|
||||||
do {
|
|
||||||
if (ioread32(tp->base_addr + CSR5) == 0xffffffff) {
|
|
||||||
printk(KERN_DEBUG " In tulip_poll(), hardware disappeared\n");
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
/* Acknowledge current RX interrupt sources. */
|
|
||||||
iowrite32((RxIntr | RxNoBuf), tp->base_addr + CSR5);
|
|
||||||
|
|
||||||
|
|
||||||
/* If we own the next entry, it is a new packet. Send it up. */
|
|
||||||
while ( ! (tp->rx_ring[entry].status & cpu_to_le32(DescOwned))) {
|
|
||||||
s32 status = le32_to_cpu(tp->rx_ring[entry].status);
|
|
||||||
short pkt_len;
|
|
||||||
|
|
||||||
if (tp->dirty_rx + RX_RING_SIZE == tp->cur_rx)
|
|
||||||
break;
|
|
||||||
|
|
||||||
if (tulip_debug > 5)
|
|
||||||
printk(KERN_DEBUG "%s: In tulip_rx(), entry %d %08x\n",
|
|
||||||
dev->name, entry, status);
|
|
||||||
|
|
||||||
if (++work_done >= budget)
|
|
||||||
goto not_done;
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Omit the four octet CRC from the length.
|
|
||||||
* (May not be considered valid until we have
|
|
||||||
* checked status for RxLengthOver2047 bits)
|
|
||||||
*/
|
|
||||||
pkt_len = ((status >> 16) & 0x7ff) - 4;
|
|
||||||
|
|
||||||
#if 0
|
|
||||||
csr6 = ioread32(tp->base_addr + CSR6);
|
|
||||||
if (csr6 & 0x1)
|
|
||||||
pkt_len += 2;
|
|
||||||
|
|
||||||
#endif
|
|
||||||
/*
|
|
||||||
* Maximum pkt_len is 1518 (1514 + vlan header)
|
|
||||||
* Anything higher than this is always invalid
|
|
||||||
* regardless of RxLengthOver2047 bits
|
|
||||||
*/
|
|
||||||
|
|
||||||
if ((status & (RxLengthOver2047 |
|
|
||||||
RxDescCRCError |
|
|
||||||
RxDescCollisionSeen |
|
|
||||||
RxDescRunt |
|
|
||||||
RxDescDescErr |
|
|
||||||
RxWholePkt)) != RxWholePkt ||
|
|
||||||
pkt_len > 1518) {
|
|
||||||
if ((status & (RxLengthOver2047 |
|
|
||||||
RxWholePkt)) != RxWholePkt) {
|
|
||||||
/* Ingore earlier buffers. */
|
|
||||||
if ((status & 0xffff) != 0x7fff) {
|
|
||||||
if (tulip_debug > 1)
|
|
||||||
dev_warn(&dev->dev,
|
|
||||||
"Oversized Ethernet frame spanned multiple buffers, status %08x!\n",
|
|
||||||
status);
|
|
||||||
tp->stats.rx_length_errors++;
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
/* There was a fatal error. */
|
|
||||||
if (tulip_debug > 2)
|
|
||||||
printk(KERN_DEBUG "%s: Receive error, Rx status %08x\n",
|
|
||||||
dev->name, status);
|
|
||||||
tp->stats.rx_errors++; /* end of a packet.*/
|
|
||||||
if (pkt_len > 1518 ||
|
|
||||||
(status & RxDescRunt))
|
|
||||||
tp->stats.rx_length_errors++;
|
|
||||||
|
|
||||||
if (status & 0x0004) tp->stats.rx_frame_errors++;
|
|
||||||
if (status & 0x0002) tp->stats.rx_crc_errors++;
|
|
||||||
if (status & 0x0001) tp->stats.rx_fifo_errors++;
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
struct sk_buff *skb = tp->rx_buffers[entry].skb;
|
|
||||||
char *temp = skb_put(skb, pkt_len);
|
|
||||||
|
|
||||||
#if 0
|
|
||||||
if (csr6 & 1)
|
|
||||||
skb_pull(skb, 2);
|
|
||||||
#endif
|
|
||||||
#ifndef final_version
|
|
||||||
if (tp->rx_buffers[entry].mapping !=
|
|
||||||
le32_to_cpu(tp->rx_ring[entry].buffer1)) {
|
|
||||||
dev_err(&dev->dev,
|
|
||||||
"Internal fault: The skbuff addresses do not match in tulip_rx: %08x vs. %08llx %p / %p\n",
|
|
||||||
le32_to_cpu(tp->rx_ring[entry].buffer1),
|
|
||||||
(unsigned long long)tp->rx_buffers[entry].mapping,
|
|
||||||
skb->head, temp);
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
|
|
||||||
tp->rx_buffers[entry].skb = NULL;
|
|
||||||
tp->rx_buffers[entry].mapping = 0;
|
|
||||||
skb->protocol = eth_type_trans(skb, dev);
|
|
||||||
|
|
||||||
netif_receive_skb(skb);
|
|
||||||
|
|
||||||
tp->stats.rx_packets++;
|
|
||||||
tp->stats.rx_bytes += pkt_len;
|
|
||||||
}
|
|
||||||
entry = (++tp->cur_rx) % RX_RING_SIZE;
|
|
||||||
if (tp->cur_rx - tp->dirty_rx > RX_RING_SIZE/4)
|
|
||||||
tulip_refill_rx(dev);
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
/* New ack strategy... irq does not ack Rx any longer
|
|
||||||
hopefully this helps */
|
|
||||||
|
|
||||||
/* Really bad things can happen here... If new packet arrives
|
|
||||||
* and an irq arrives (tx or just due to occasionally unset
|
|
||||||
* mask), it will be acked by irq handler, but new thread
|
|
||||||
* is not scheduled. It is major hole in design.
|
|
||||||
* No idea how to fix this if "playing with fire" will fail
|
|
||||||
* tomorrow (night 011029). If it will not fail, we won
|
|
||||||
* finally: amount of IO did not increase at all. */
|
|
||||||
} while ((ioread32(tp->base_addr + CSR5) & RxIntr));
|
|
||||||
|
|
||||||
tulip_refill_rx(dev);
|
|
||||||
|
|
||||||
/* If RX ring is not full we are out of memory. */
|
|
||||||
if (tp->rx_buffers[tp->dirty_rx % RX_RING_SIZE].skb == NULL)
|
|
||||||
goto oom;
|
|
||||||
|
|
||||||
/* Remove us from polling list and enable RX intr. */
|
|
||||||
napi_complete(napi);
|
|
||||||
iowrite32(VALID_INTR, tp->base_addr+CSR7);
|
|
||||||
|
|
||||||
/* The last op happens after poll completion. Which means the following:
|
|
||||||
* 1. it can race with disabling irqs in irq handler
|
|
||||||
* 2. it can race with dise/enabling irqs in other poll threads
|
|
||||||
* 3. if an irq raised after beginning loop, it will be immediately
|
|
||||||
* triggered here.
|
|
||||||
*
|
|
||||||
* Summarizing: the logic results in some redundant irqs both
|
|
||||||
* due to races in masking and due to too late acking of already
|
|
||||||
* processed irqs. But it must not result in losing events.
|
|
||||||
*/
|
|
||||||
|
|
||||||
return work_done;
|
|
||||||
|
|
||||||
not_done:
|
|
||||||
if (tp->cur_rx - tp->dirty_rx > RX_RING_SIZE/2 ||
|
|
||||||
tp->rx_buffers[tp->dirty_rx % RX_RING_SIZE].skb == NULL)
|
|
||||||
tulip_refill_rx(dev);
|
|
||||||
|
|
||||||
if (tp->rx_buffers[tp->dirty_rx % RX_RING_SIZE].skb == NULL)
|
|
||||||
goto oom;
|
|
||||||
|
|
||||||
return work_done;
|
|
||||||
|
|
||||||
oom: /* Executed with RX ints disabled */
|
|
||||||
|
|
||||||
/* Start timer, stop polling, but do not enable rx interrupts. */
|
|
||||||
mod_timer(&tp->oom_timer, jiffies+1);
|
|
||||||
|
|
||||||
/* Think: timer_pending() was an explicit signature of bug.
|
|
||||||
* Timer can be pending now but fired and completed
|
|
||||||
* before we did napi_complete(). See? We would lose it. */
|
|
||||||
|
|
||||||
/* remove ourselves from the polling list */
|
|
||||||
napi_complete(napi);
|
|
||||||
|
|
||||||
return work_done;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* The interrupt handler does all of the Rx thread work and cleans up
|
|
||||||
after the Tx thread. */
|
|
||||||
irqreturn_t tulip_interrupt(int irq, void *dev_instance)
|
|
||||||
{
|
|
||||||
struct net_device *dev = (struct net_device *)dev_instance;
|
|
||||||
struct tulip_private *tp = netdev_priv(dev);
|
|
||||||
void __iomem *ioaddr = tp->base_addr;
|
|
||||||
int csr5;
|
|
||||||
int missed;
|
|
||||||
int rx = 0;
|
|
||||||
int tx = 0;
|
|
||||||
int oi = 0;
|
|
||||||
int maxrx = RX_RING_SIZE;
|
|
||||||
int maxtx = TX_RING_SIZE;
|
|
||||||
int maxoi = TX_RING_SIZE;
|
|
||||||
int rxd = 0;
|
|
||||||
unsigned int work_count = 25;
|
|
||||||
unsigned int handled = 0;
|
|
||||||
|
|
||||||
/* Let's see whether the interrupt really is for us */
|
|
||||||
csr5 = ioread32(ioaddr + CSR5);
|
|
||||||
|
|
||||||
if ((csr5 & (NormalIntr|AbnormalIntr)) == 0)
|
|
||||||
return IRQ_RETVAL(handled);
|
|
||||||
|
|
||||||
tp->nir++;
|
|
||||||
|
|
||||||
do {
|
|
||||||
|
|
||||||
if (!rxd && (csr5 & (RxIntr | RxNoBuf))) {
|
|
||||||
rxd++;
|
|
||||||
/* Mask RX intrs and add the device to poll list. */
|
|
||||||
iowrite32(VALID_INTR&~RxPollInt, ioaddr + CSR7);
|
|
||||||
napi_schedule(&tp->napi);
|
|
||||||
|
|
||||||
if (!(csr5&~(AbnormalIntr|NormalIntr|RxPollInt|TPLnkPass)))
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Acknowledge the interrupt sources we handle here ASAP
|
|
||||||
the poll function does Rx and RxNoBuf acking */
|
|
||||||
|
|
||||||
iowrite32(csr5 & 0x0001ff3f, ioaddr + CSR5);
|
|
||||||
|
|
||||||
if (tulip_debug > 4)
|
|
||||||
printk(KERN_DEBUG "%s: interrupt csr5=%#8.8x new csr5=%#8.8x\n",
|
|
||||||
dev->name, csr5, ioread32(ioaddr + CSR5));
|
|
||||||
|
|
||||||
|
|
||||||
if (csr5 & (TxNoBuf | TxDied | TxIntr | TimerInt)) {
|
|
||||||
unsigned int dirty_tx;
|
|
||||||
|
|
||||||
spin_lock(&tp->lock);
|
|
||||||
|
|
||||||
for (dirty_tx = tp->dirty_tx; tp->cur_tx - dirty_tx > 0;
|
|
||||||
dirty_tx++) {
|
|
||||||
int entry = dirty_tx % TX_RING_SIZE;
|
|
||||||
int status = le32_to_cpu(tp->tx_ring[entry].status);
|
|
||||||
|
|
||||||
if (status < 0)
|
|
||||||
break; /* It still has not been Txed */
|
|
||||||
|
|
||||||
if (status & 0x8000) {
|
|
||||||
/* There was an major error, log it. */
|
|
||||||
#ifndef final_version
|
|
||||||
if (tulip_debug > 1)
|
|
||||||
printk(KERN_DEBUG "%s: Transmit error, Tx status %08x\n",
|
|
||||||
dev->name, status);
|
|
||||||
#endif
|
|
||||||
tp->stats.tx_errors++;
|
|
||||||
if (status & 0x4104) tp->stats.tx_aborted_errors++;
|
|
||||||
if (status & 0x0C00) tp->stats.tx_carrier_errors++;
|
|
||||||
if (status & 0x0200) tp->stats.tx_window_errors++;
|
|
||||||
if (status & 0x0002) tp->stats.tx_fifo_errors++;
|
|
||||||
if (status & 0x0080) tp->stats.tx_heartbeat_errors++;
|
|
||||||
} else {
|
|
||||||
tp->stats.tx_bytes +=
|
|
||||||
tp->tx_buffers[entry].skb->len;
|
|
||||||
tp->stats.collisions += (status >> 3) & 15;
|
|
||||||
tp->stats.tx_packets++;
|
|
||||||
}
|
|
||||||
|
|
||||||
dma_unmap_single(&tp->pdev->dev, tp->tx_buffers[entry].mapping,
|
|
||||||
tp->tx_buffers[entry].skb->len, DMA_TO_DEVICE);
|
|
||||||
/* Free the original skb. */
|
|
||||||
dev_kfree_skb_irq(tp->tx_buffers[entry].skb);
|
|
||||||
tp->tx_buffers[entry].skb = NULL;
|
|
||||||
tp->tx_buffers[entry].mapping = 0;
|
|
||||||
tx++;
|
|
||||||
}
|
|
||||||
|
|
||||||
#ifndef final_version
|
|
||||||
if (tp->cur_tx - dirty_tx > TX_RING_SIZE) {
|
|
||||||
dev_err(&dev->dev,
|
|
||||||
"Out-of-sync dirty pointer, %d vs. %d\n",
|
|
||||||
dirty_tx, tp->cur_tx);
|
|
||||||
dirty_tx += TX_RING_SIZE;
|
|
||||||
}
|
|
||||||
#endif
|
|
||||||
|
|
||||||
if (tp->cur_tx - dirty_tx < TX_RING_SIZE - 2)
|
|
||||||
netif_wake_queue(dev);
|
|
||||||
|
|
||||||
tp->dirty_tx = dirty_tx;
|
|
||||||
if (csr5 & TxDied) {
|
|
||||||
if (tulip_debug > 2)
|
|
||||||
dev_warn(&dev->dev,
|
|
||||||
"The transmitter stopped. CSR5 is %x, CSR6 %x, new CSR6 %x\n",
|
|
||||||
csr5, ioread32(ioaddr + CSR6),
|
|
||||||
tp->csr6);
|
|
||||||
tulip_restart_rxtx(tp);
|
|
||||||
}
|
|
||||||
spin_unlock(&tp->lock);
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Log errors. */
|
|
||||||
if (csr5 & AbnormalIntr) { /* Abnormal error summary bit. */
|
|
||||||
if (csr5 == 0xffffffff)
|
|
||||||
break;
|
|
||||||
if (csr5 & TxJabber) tp->stats.tx_errors++;
|
|
||||||
if (csr5 & TxFIFOUnderflow) {
|
|
||||||
if ((tp->csr6 & 0xC000) != 0xC000)
|
|
||||||
tp->csr6 += 0x4000; /* Bump up the Tx threshold */
|
|
||||||
else
|
|
||||||
tp->csr6 |= 0x00200000; /* Store-n-forward. */
|
|
||||||
/* Restart the transmit process. */
|
|
||||||
tulip_restart_rxtx(tp);
|
|
||||||
iowrite32(0, ioaddr + CSR1);
|
|
||||||
}
|
|
||||||
if (csr5 & (RxDied | RxNoBuf)) {
|
|
||||||
iowrite32(tp->mc_filter[0], ioaddr + CSR27);
|
|
||||||
iowrite32(tp->mc_filter[1], ioaddr + CSR28);
|
|
||||||
}
|
|
||||||
if (csr5 & RxDied) { /* Missed a Rx frame. */
|
|
||||||
tp->stats.rx_missed_errors += ioread32(ioaddr + CSR8) & 0xffff;
|
|
||||||
tp->stats.rx_errors++;
|
|
||||||
tulip_start_rxtx(tp);
|
|
||||||
}
|
|
||||||
/*
|
|
||||||
* NB: t21142_lnk_change() does a del_timer_sync(), so be careful if this
|
|
||||||
* call is ever done under the spinlock
|
|
||||||
*/
|
|
||||||
if (csr5 & (TPLnkPass | TPLnkFail | 0x08000000)) {
|
|
||||||
if (tp->link_change)
|
|
||||||
(tp->link_change)(dev, csr5);
|
|
||||||
}
|
|
||||||
if (csr5 & SystemError) {
|
|
||||||
int error = (csr5 >> 23) & 7;
|
|
||||||
/* oops, we hit a PCI error. The code produced corresponds
|
|
||||||
* to the reason:
|
|
||||||
* 0 - parity error
|
|
||||||
* 1 - master abort
|
|
||||||
* 2 - target abort
|
|
||||||
* Note that on parity error, we should do a software reset
|
|
||||||
* of the chip to get it back into a sane state (according
|
|
||||||
* to the 21142/3 docs that is).
|
|
||||||
* -- rmk
|
|
||||||
*/
|
|
||||||
dev_err(&dev->dev,
|
|
||||||
"(%lu) System Error occurred (%d)\n",
|
|
||||||
tp->nir, error);
|
|
||||||
}
|
|
||||||
/* Clear all error sources, included undocumented ones! */
|
|
||||||
iowrite32(0x0800f7ba, ioaddr + CSR5);
|
|
||||||
oi++;
|
|
||||||
}
|
|
||||||
if (csr5 & TimerInt) {
|
|
||||||
|
|
||||||
if (tulip_debug > 2)
|
|
||||||
dev_err(&dev->dev,
|
|
||||||
"Re-enabling interrupts, %08x\n",
|
|
||||||
csr5);
|
|
||||||
iowrite32(VALID_INTR, ioaddr + CSR7);
|
|
||||||
oi++;
|
|
||||||
}
|
|
||||||
if (tx > maxtx || rx > maxrx || oi > maxoi) {
|
|
||||||
if (tulip_debug > 1)
|
|
||||||
dev_warn(&dev->dev, "Too much work during an interrupt, csr5=0x%08x. (%lu) (%d,%d,%d)\n",
|
|
||||||
csr5, tp->nir, tx, rx, oi);
|
|
||||||
|
|
||||||
/* Acknowledge all interrupt sources. */
|
|
||||||
iowrite32(0x8001ffff, ioaddr + CSR5);
|
|
||||||
/* Mask all interrupting sources, set timer to
|
|
||||||
re-enable. */
|
|
||||||
iowrite32(((~csr5) & 0x0001ebef) | AbnormalIntr | TimerInt, ioaddr + CSR7);
|
|
||||||
iowrite32(0x0012, ioaddr + CSR11);
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
work_count--;
|
|
||||||
if (work_count == 0)
|
|
||||||
break;
|
|
||||||
|
|
||||||
csr5 = ioread32(ioaddr + CSR5);
|
|
||||||
|
|
||||||
if (rxd)
|
|
||||||
csr5 &= ~RxPollInt;
|
|
||||||
} while ((csr5 & (TxNoBuf |
|
|
||||||
TxDied |
|
|
||||||
TxIntr |
|
|
||||||
TimerInt |
|
|
||||||
/* Abnormal intr. */
|
|
||||||
RxDied |
|
|
||||||
TxFIFOUnderflow |
|
|
||||||
TxJabber |
|
|
||||||
TPLnkFail |
|
|
||||||
SystemError )) != 0);
|
|
||||||
|
|
||||||
if ((missed = ioread32(ioaddr + CSR8) & 0x1ffff)) {
|
|
||||||
tp->stats.rx_dropped += missed & 0x10000 ? 0x10000 : missed;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (tulip_debug > 4)
|
|
||||||
printk(KERN_DEBUG "%s: exiting interrupt, csr5=%#04x\n",
|
|
||||||
dev->name, ioread32(ioaddr + CSR5));
|
|
||||||
|
|
||||||
return IRQ_HANDLED;
|
|
||||||
}
|
|
||||||
Loading…
Reference in a new issue