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Several devices have multiple independant RX queues per net device, and some have a single interrupt doorbell for several queues. In either case, it's easier to support layouts like that if the structure representing the poll is independant from the net device itself. The signature of the ->poll() call back goes from: int foo_poll(struct net_device *dev, int *budget) to int foo_poll(struct napi_struct *napi, int budget) The caller is returned the number of RX packets processed (or the number of "NAPI credits" consumed if you want to get abstract). The callee no longer messes around bumping dev->quota, *budget, etc. because that is all handled in the caller upon return. The napi_struct is to be embedded in the device driver private data structures. Furthermore, it is the driver's responsibility to disable all NAPI instances in it's ->stop() device close handler. Since the napi_struct is privatized into the driver's private data structures, only the driver knows how to get at all of the napi_struct instances it may have per-device. With lots of help and suggestions from Rusty Russell, Roland Dreier, Michael Chan, Jeff Garzik, and Jamal Hadi Salim. Bug fixes from Thomas Graf, Roland Dreier, Peter Zijlstra, Joseph Fannin, Scott Wood, Hans J. Koch, and Michael Chan. [ Ported to current tree and all drivers converted. Integrated Stephen's follow-on kerneldoc additions, and restored poll_list handling to the old style to fix mutual exclusion issues. -DaveM ] Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
233 lines
8.6 KiB
C
233 lines
8.6 KiB
C
/*
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* PS3 Platfom gelic network driver.
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*
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* Copyright (C) 2007 Sony Computer Entertainment Inc.
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* Copyright 2006, 2007 Sony Corporation.
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*
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* This file is based on: spider_net.h
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*
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* (C) Copyright IBM Corp. 2005
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*
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* Authors : Utz Bacher <utz.bacher@de.ibm.com>
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* Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _GELIC_NET_H
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#define _GELIC_NET_H
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/* descriptors */
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#define GELIC_NET_RX_DESCRIPTORS 128 /* num of descriptors */
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#define GELIC_NET_TX_DESCRIPTORS 128 /* num of descriptors */
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#define GELIC_NET_MAX_MTU VLAN_ETH_FRAME_LEN
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#define GELIC_NET_MIN_MTU VLAN_ETH_ZLEN
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#define GELIC_NET_RXBUF_ALIGN 128
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#define GELIC_NET_RX_CSUM_DEFAULT 1 /* hw chksum */
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#define GELIC_NET_WATCHDOG_TIMEOUT 5*HZ
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#define GELIC_NET_NAPI_WEIGHT (GELIC_NET_RX_DESCRIPTORS)
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#define GELIC_NET_BROADCAST_ADDR 0xffffffffffffL
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#define GELIC_NET_VLAN_POS (VLAN_ETH_ALEN * 2)
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#define GELIC_NET_VLAN_MAX 4
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#define GELIC_NET_MC_COUNT_MAX 32 /* multicast address list */
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enum gelic_net_int0_status {
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GELIC_NET_GDTDCEINT = 24,
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GELIC_NET_GRFANMINT = 28,
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};
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/* GHIINT1STS bits */
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enum gelic_net_int1_status {
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GELIC_NET_GDADCEINT = 14,
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};
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/* interrupt mask */
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#define GELIC_NET_TXINT (1L << (GELIC_NET_GDTDCEINT + 32))
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#define GELIC_NET_RXINT0 (1L << (GELIC_NET_GRFANMINT + 32))
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#define GELIC_NET_RXINT1 (1L << GELIC_NET_GDADCEINT)
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#define GELIC_NET_RXINT (GELIC_NET_RXINT0 | GELIC_NET_RXINT1)
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/* RX descriptor data_status bits */
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#define GELIC_NET_RXDMADU 0x80000000 /* destination MAC addr unknown */
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#define GELIC_NET_RXLSTFBF 0x40000000 /* last frame buffer */
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#define GELIC_NET_RXIPCHK 0x20000000 /* IP checksum performed */
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#define GELIC_NET_RXTCPCHK 0x10000000 /* TCP/UDP checksup performed */
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#define GELIC_NET_RXIPSPKT 0x08000000 /* IPsec packet */
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#define GELIC_NET_RXIPSAHPRT 0x04000000 /* IPsec AH protocol performed */
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#define GELIC_NET_RXIPSESPPRT 0x02000000 /* IPsec ESP protocol performed */
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#define GELIC_NET_RXSESPAH 0x01000000 /*
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* IPsec ESP protocol auth
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* performed
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*/
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#define GELIC_NET_RXWTPKT 0x00C00000 /*
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* wakeup trigger packet
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* 01: Magic Packet (TM)
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* 10: ARP packet
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* 11: Multicast MAC addr
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*/
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#define GELIC_NET_RXVLNPKT 0x00200000 /* VLAN packet */
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/* bit 20..16 reserved */
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#define GELIC_NET_RXRRECNUM 0x0000ff00 /* reception receipt number */
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#define GELIC_NET_RXRRECNUM_SHIFT 8
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/* bit 7..0 reserved */
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#define GELIC_NET_TXDESC_TAIL 0
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#define GELIC_NET_DATA_STATUS_CHK_MASK (GELIC_NET_RXIPCHK | GELIC_NET_RXTCPCHK)
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/* RX descriptor data_error bits */
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/* bit 31 reserved */
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#define GELIC_NET_RXALNERR 0x40000000 /* alignement error 10/100M */
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#define GELIC_NET_RXOVERERR 0x20000000 /* oversize error */
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#define GELIC_NET_RXRNTERR 0x10000000 /* Runt error */
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#define GELIC_NET_RXIPCHKERR 0x08000000 /* IP checksum error */
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#define GELIC_NET_RXTCPCHKERR 0x04000000 /* TCP/UDP checksum error */
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#define GELIC_NET_RXUMCHSP 0x02000000 /* unmatched sp on sp */
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#define GELIC_NET_RXUMCHSPI 0x01000000 /* unmatched SPI on SAD */
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#define GELIC_NET_RXUMCHSAD 0x00800000 /* unmatched SAD */
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#define GELIC_NET_RXIPSAHERR 0x00400000 /* auth error on AH protocol
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* processing */
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#define GELIC_NET_RXIPSESPAHERR 0x00200000 /* auth error on ESP protocol
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* processing */
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#define GELIC_NET_RXDRPPKT 0x00100000 /* drop packet */
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#define GELIC_NET_RXIPFMTERR 0x00080000 /* IP packet format error */
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/* bit 18 reserved */
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#define GELIC_NET_RXDATAERR 0x00020000 /* IP packet format error */
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#define GELIC_NET_RXCALERR 0x00010000 /* cariier extension length
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* error */
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#define GELIC_NET_RXCREXERR 0x00008000 /* carrier extention error */
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#define GELIC_NET_RXMLTCST 0x00004000 /* multicast address frame */
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/* bit 13..0 reserved */
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#define GELIC_NET_DATA_ERROR_CHK_MASK \
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(GELIC_NET_RXIPCHKERR | GELIC_NET_RXTCPCHKERR)
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/* tx descriptor command and status */
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#define GELIC_NET_DMAC_CMDSTAT_NOCS 0xa0080000 /* middle of frame */
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#define GELIC_NET_DMAC_CMDSTAT_TCPCS 0xa00a0000
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#define GELIC_NET_DMAC_CMDSTAT_UDPCS 0xa00b0000
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#define GELIC_NET_DMAC_CMDSTAT_END_FRAME 0x00040000 /* end of frame */
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#define GELIC_NET_DMAC_CMDSTAT_RXDCEIS 0x00000002 /* descriptor chain end
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* interrupt status */
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#define GELIC_NET_DMAC_CMDSTAT_CHAIN_END 0x00000002 /* RXDCEIS:DMA stopped */
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#define GELIC_NET_DESCR_IND_PROC_SHIFT 28
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#define GELIC_NET_DESCR_IND_PROC_MASKO 0x0fffffff
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enum gelic_net_descr_status {
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GELIC_NET_DESCR_COMPLETE = 0x00, /* used in tx */
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GELIC_NET_DESCR_BUFFER_FULL = 0x00, /* used in rx */
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GELIC_NET_DESCR_RESPONSE_ERROR = 0x01, /* used in rx and tx */
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GELIC_NET_DESCR_PROTECTION_ERROR = 0x02, /* used in rx and tx */
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GELIC_NET_DESCR_FRAME_END = 0x04, /* used in rx */
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GELIC_NET_DESCR_FORCE_END = 0x05, /* used in rx and tx */
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GELIC_NET_DESCR_CARDOWNED = 0x0a, /* used in rx and tx */
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GELIC_NET_DESCR_NOT_IN_USE = 0x0b /* any other value */
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};
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/* for lv1_net_control */
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#define GELIC_NET_GET_MAC_ADDRESS 0x0000000000000001
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#define GELIC_NET_GET_ETH_PORT_STATUS 0x0000000000000002
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#define GELIC_NET_SET_NEGOTIATION_MODE 0x0000000000000003
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#define GELIC_NET_GET_VLAN_ID 0x0000000000000004
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#define GELIC_NET_LINK_UP 0x0000000000000001
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#define GELIC_NET_FULL_DUPLEX 0x0000000000000002
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#define GELIC_NET_AUTO_NEG 0x0000000000000004
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#define GELIC_NET_SPEED_10 0x0000000000000010
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#define GELIC_NET_SPEED_100 0x0000000000000020
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#define GELIC_NET_SPEED_1000 0x0000000000000040
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#define GELIC_NET_VLAN_ALL 0x0000000000000001
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#define GELIC_NET_VLAN_WIRED 0x0000000000000002
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#define GELIC_NET_VLAN_WIRELESS 0x0000000000000003
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#define GELIC_NET_VLAN_PSP 0x0000000000000004
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#define GELIC_NET_VLAN_PORT0 0x0000000000000010
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#define GELIC_NET_VLAN_PORT1 0x0000000000000011
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#define GELIC_NET_VLAN_PORT2 0x0000000000000012
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#define GELIC_NET_VLAN_DAEMON_CLIENT_BSS 0x0000000000000013
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#define GELIC_NET_VLAN_LIBERO_CLIENT_BSS 0x0000000000000014
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#define GELIC_NET_VLAN_NO_ENTRY -6
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#define GELIC_NET_PORT 2 /* for port status */
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/* size of hardware part of gelic descriptor */
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#define GELIC_NET_DESCR_SIZE (32)
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struct gelic_net_descr {
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/* as defined by the hardware */
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u32 buf_addr;
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u32 buf_size;
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u32 next_descr_addr;
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u32 dmac_cmd_status;
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u32 result_size;
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u32 valid_size; /* all zeroes for tx */
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u32 data_status;
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u32 data_error; /* all zeroes for tx */
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/* used in the driver */
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struct sk_buff *skb;
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dma_addr_t bus_addr;
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struct gelic_net_descr *next;
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struct gelic_net_descr *prev;
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struct vlan_ethhdr vlan;
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} __attribute__((aligned(32)));
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struct gelic_net_descr_chain {
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/* we walk from tail to head */
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struct gelic_net_descr *head;
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struct gelic_net_descr *tail;
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};
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struct gelic_net_card {
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struct net_device *netdev;
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struct napi_struct napi;
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/*
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* hypervisor requires irq_status should be
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* 8 bytes aligned, but u64 member is
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* always disposed in that manner
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*/
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u64 irq_status;
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u64 ghiintmask;
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struct ps3_system_bus_device *dev;
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u32 vlan_id[GELIC_NET_VLAN_MAX];
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int vlan_index;
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struct gelic_net_descr_chain tx_chain;
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struct gelic_net_descr_chain rx_chain;
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int rx_dma_restart_required;
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/* gurad dmac descriptor chain*/
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spinlock_t chain_lock;
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int rx_csum;
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/* guard tx_dma_progress */
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spinlock_t tx_dma_lock;
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int tx_dma_progress;
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struct work_struct tx_timeout_task;
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atomic_t tx_timeout_task_counter;
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wait_queue_head_t waitq;
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struct gelic_net_descr *tx_top, *rx_top;
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struct gelic_net_descr descr[0];
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};
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extern unsigned long p_to_lp(long pa);
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#endif /* _GELIC_NET_H */
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