582 lines
13 KiB
C
582 lines
13 KiB
C
/* SuperH Ethernet device driver
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*
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* Copyright (C) 2006-2012 Nobuhiro Iwamatsu
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* Copyright (C) 2008-2012 Renesas Solutions Corp.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*/
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#ifndef __SH_ETH_H__
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#define __SH_ETH_H__
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#define CARDNAME "sh-eth"
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#define TX_TIMEOUT (5*HZ)
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#define TX_RING_SIZE 64 /* Tx ring size */
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#define RX_RING_SIZE 64 /* Rx ring size */
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#define TX_RING_MIN 64
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#define RX_RING_MIN 64
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#define TX_RING_MAX 1024
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#define RX_RING_MAX 1024
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#define PKT_BUF_SZ 1538
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#define SH_ETH_TSU_TIMEOUT_MS 500
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#define SH_ETH_TSU_CAM_ENTRIES 32
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enum {
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/* IMPORTANT: To keep ethtool register dump working, add new
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* register names immediately before SH_ETH_MAX_REGISTER_OFFSET.
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*/
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/* E-DMAC registers */
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EDSR = 0,
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EDMR,
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EDTRR,
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EDRRR,
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EESR,
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EESIPR,
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TDLAR,
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TDFAR,
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TDFXR,
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TDFFR,
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RDLAR,
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RDFAR,
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RDFXR,
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RDFFR,
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TRSCER,
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RMFCR,
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TFTR,
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FDR,
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RMCR,
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EDOCR,
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TFUCR,
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RFOCR,
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RMIIMODE,
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FCFTR,
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RPADIR,
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TRIMD,
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RBWAR,
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TBRAR,
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/* Ether registers */
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ECMR,
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ECSR,
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ECSIPR,
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PIR,
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PSR,
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RDMLR,
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PIPR,
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RFLR,
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IPGR,
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APR,
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MPR,
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PFTCR,
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PFRCR,
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RFCR,
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RFCF,
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TPAUSER,
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TPAUSECR,
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BCFR,
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BCFRR,
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GECMR,
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BCULR,
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MAHR,
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MALR,
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TROCR,
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CDCR,
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LCCR,
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CNDCR,
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CEFCR,
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FRECR,
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TSFRCR,
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TLFRCR,
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CERCR,
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CEECR,
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MAFCR,
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RTRATE,
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CSMR,
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RMII_MII,
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/* TSU Absolute address */
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ARSTR,
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TSU_CTRST,
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TSU_FWEN0,
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TSU_FWEN1,
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TSU_FCM,
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TSU_BSYSL0,
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TSU_BSYSL1,
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TSU_PRISL0,
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TSU_PRISL1,
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TSU_FWSL0,
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TSU_FWSL1,
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TSU_FWSLC,
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TSU_QTAG0,
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TSU_QTAG1,
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TSU_QTAGM0,
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TSU_QTAGM1,
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TSU_FWSR,
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TSU_FWINMK,
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TSU_ADQT0,
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TSU_ADQT1,
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TSU_VTAG0,
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TSU_VTAG1,
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TSU_ADSBSY,
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TSU_TEN,
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TSU_POST1,
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TSU_POST2,
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TSU_POST3,
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TSU_POST4,
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TSU_ADRH0,
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/* TSU_ADR{H,L}{0..31} are assumed to be contiguous */
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TXNLCR0,
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TXALCR0,
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RXNLCR0,
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RXALCR0,
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FWNLCR0,
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FWALCR0,
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TXNLCR1,
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TXALCR1,
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RXNLCR1,
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RXALCR1,
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FWNLCR1,
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FWALCR1,
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/* This value must be written at last. */
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SH_ETH_MAX_REGISTER_OFFSET,
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};
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enum {
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SH_ETH_REG_GIGABIT,
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SH_ETH_REG_FAST_RZ,
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SH_ETH_REG_FAST_RCAR,
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SH_ETH_REG_FAST_SH4,
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SH_ETH_REG_FAST_SH3_SH2
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};
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/* Driver's parameters */
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#if defined(CONFIG_CPU_SH4) || defined(CONFIG_ARCH_SHMOBILE)
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#define SH_ETH_RX_ALIGN 32
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#else
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#define SH_ETH_RX_ALIGN 2
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#endif
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/* Register's bits
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*/
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/* EDSR : sh7734, sh7757, sh7763, r8a7740, and r7s72100 only */
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enum EDSR_BIT {
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EDSR_ENT = 0x01, EDSR_ENR = 0x02,
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};
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#define EDSR_ENALL (EDSR_ENT|EDSR_ENR)
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/* GECMR : sh7734, sh7763 and r8a7740 only */
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enum GECMR_BIT {
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GECMR_10 = 0x0, GECMR_100 = 0x04, GECMR_1000 = 0x01,
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};
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/* EDMR */
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enum DMAC_M_BIT {
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EDMR_EL = 0x40, /* Litte endian */
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EDMR_DL1 = 0x20, EDMR_DL0 = 0x10,
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EDMR_SRST_GETHER = 0x03,
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EDMR_SRST_ETHER = 0x01,
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};
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/* EDTRR */
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enum DMAC_T_BIT {
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EDTRR_TRNS_GETHER = 0x03,
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EDTRR_TRNS_ETHER = 0x01,
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};
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/* EDRRR */
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enum EDRRR_R_BIT {
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EDRRR_R = 0x01,
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};
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/* TPAUSER */
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enum TPAUSER_BIT {
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TPAUSER_TPAUSE = 0x0000ffff,
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TPAUSER_UNLIMITED = 0,
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};
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/* BCFR */
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enum BCFR_BIT {
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BCFR_RPAUSE = 0x0000ffff,
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BCFR_UNLIMITED = 0,
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};
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/* PIR */
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enum PIR_BIT {
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PIR_MDI = 0x08, PIR_MDO = 0x04, PIR_MMD = 0x02, PIR_MDC = 0x01,
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};
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/* PSR */
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enum PHY_STATUS_BIT { PHY_ST_LINK = 0x01, };
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/* EESR */
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enum EESR_BIT {
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EESR_TWB1 = 0x80000000,
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EESR_TWB = 0x40000000, /* same as TWB0 */
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EESR_TC1 = 0x20000000,
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EESR_TUC = 0x10000000,
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EESR_ROC = 0x08000000,
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EESR_TABT = 0x04000000,
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EESR_RABT = 0x02000000,
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EESR_RFRMER = 0x01000000, /* same as RFCOF */
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EESR_ADE = 0x00800000,
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EESR_ECI = 0x00400000,
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EESR_FTC = 0x00200000, /* same as TC or TC0 */
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EESR_TDE = 0x00100000,
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EESR_TFE = 0x00080000, /* same as TFUF */
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EESR_FRC = 0x00040000, /* same as FR */
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EESR_RDE = 0x00020000,
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EESR_RFE = 0x00010000,
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EESR_CND = 0x00000800,
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EESR_DLC = 0x00000400,
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EESR_CD = 0x00000200,
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EESR_RTO = 0x00000100,
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EESR_RMAF = 0x00000080,
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EESR_CEEF = 0x00000040,
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EESR_CELF = 0x00000020,
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EESR_RRF = 0x00000010,
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EESR_RTLF = 0x00000008,
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EESR_RTSF = 0x00000004,
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EESR_PRE = 0x00000002,
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EESR_CERF = 0x00000001,
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};
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#define EESR_RX_CHECK (EESR_FRC | /* Frame recv */ \
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EESR_RMAF | /* Multicast address recv */ \
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EESR_RRF | /* Bit frame recv */ \
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EESR_RTLF | /* Long frame recv */ \
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EESR_RTSF | /* Short frame recv */ \
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EESR_PRE | /* PHY-LSI recv error */ \
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EESR_CERF) /* Recv frame CRC error */
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#define DEFAULT_TX_CHECK (EESR_FTC | EESR_CND | EESR_DLC | EESR_CD | \
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EESR_RTO)
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#define DEFAULT_EESR_ERR_CHECK (EESR_TWB | EESR_TABT | EESR_RABT | EESR_RFE | \
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EESR_RDE | EESR_RFRMER | EESR_ADE | \
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EESR_TFE | EESR_TDE)
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/* EESIPR */
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enum EESIPR_BIT {
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EESIPR_TWB1IP = 0x80000000,
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EESIPR_TWBIP = 0x40000000, /* same as TWB0IP */
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EESIPR_TC1IP = 0x20000000,
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EESIPR_TUCIP = 0x10000000,
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EESIPR_ROCIP = 0x08000000,
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EESIPR_TABTIP = 0x04000000,
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EESIPR_RABTIP = 0x02000000,
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EESIPR_RFCOFIP = 0x01000000,
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EESIPR_ADEIP = 0x00800000,
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EESIPR_ECIIP = 0x00400000,
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EESIPR_FTCIP = 0x00200000, /* same as TC0IP */
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EESIPR_TDEIP = 0x00100000,
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EESIPR_TFUFIP = 0x00080000,
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EESIPR_FRIP = 0x00040000,
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EESIPR_RDEIP = 0x00020000,
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EESIPR_RFOFIP = 0x00010000,
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EESIPR_CNDIP = 0x00000800,
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EESIPR_DLCIP = 0x00000400,
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EESIPR_CDIP = 0x00000200,
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EESIPR_TROIP = 0x00000100,
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EESIPR_RMAFIP = 0x00000080,
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EESIPR_CEEFIP = 0x00000040,
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EESIPR_CELFIP = 0x00000020,
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EESIPR_RRFIP = 0x00000010,
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EESIPR_RTLFIP = 0x00000008,
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EESIPR_RTSFIP = 0x00000004,
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EESIPR_PREIP = 0x00000002,
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EESIPR_CERFIP = 0x00000001,
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};
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/* Receive descriptor 0 bits */
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enum RD_STS_BIT {
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RD_RACT = 0x80000000, RD_RDLE = 0x40000000,
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RD_RFP1 = 0x20000000, RD_RFP0 = 0x10000000,
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RD_RFE = 0x08000000, RD_RFS10 = 0x00000200,
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RD_RFS9 = 0x00000100, RD_RFS8 = 0x00000080,
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RD_RFS7 = 0x00000040, RD_RFS6 = 0x00000020,
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RD_RFS5 = 0x00000010, RD_RFS4 = 0x00000008,
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RD_RFS3 = 0x00000004, RD_RFS2 = 0x00000002,
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RD_RFS1 = 0x00000001,
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};
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#define RDF1ST RD_RFP1
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#define RDFEND RD_RFP0
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#define RD_RFP (RD_RFP1|RD_RFP0)
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/* Receive descriptor 1 bits */
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enum RD_LEN_BIT {
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RD_RFL = 0x0000ffff, /* receive frame length */
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RD_RBL = 0xffff0000, /* receive buffer length */
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};
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/* FCFTR */
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enum FCFTR_BIT {
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FCFTR_RFF2 = 0x00040000, FCFTR_RFF1 = 0x00020000,
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FCFTR_RFF0 = 0x00010000, FCFTR_RFD2 = 0x00000004,
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FCFTR_RFD1 = 0x00000002, FCFTR_RFD0 = 0x00000001,
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};
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#define DEFAULT_FIFO_F_D_RFF (FCFTR_RFF2 | FCFTR_RFF1 | FCFTR_RFF0)
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#define DEFAULT_FIFO_F_D_RFD (FCFTR_RFD2 | FCFTR_RFD1 | FCFTR_RFD0)
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/* Transmit descriptor 0 bits */
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enum TD_STS_BIT {
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TD_TACT = 0x80000000, TD_TDLE = 0x40000000,
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TD_TFP1 = 0x20000000, TD_TFP0 = 0x10000000,
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TD_TFE = 0x08000000, TD_TWBI = 0x04000000,
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};
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#define TDF1ST TD_TFP1
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#define TDFEND TD_TFP0
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#define TD_TFP (TD_TFP1|TD_TFP0)
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/* Transmit descriptor 1 bits */
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enum TD_LEN_BIT {
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TD_TBL = 0xffff0000, /* transmit buffer length */
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};
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/* RMCR */
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enum RMCR_BIT {
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RMCR_RNC = 0x00000001,
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};
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/* ECMR */
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enum FELIC_MODE_BIT {
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ECMR_TRCCM = 0x04000000, ECMR_RCSC = 0x00800000,
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ECMR_DPAD = 0x00200000, ECMR_RZPF = 0x00100000,
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ECMR_ZPF = 0x00080000, ECMR_PFR = 0x00040000, ECMR_RXF = 0x00020000,
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ECMR_TXF = 0x00010000, ECMR_MCT = 0x00002000, ECMR_PRCEF = 0x00001000,
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ECMR_MPDE = 0x00000200, ECMR_RE = 0x00000040, ECMR_TE = 0x00000020,
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ECMR_RTM = 0x00000010, ECMR_ILB = 0x00000008, ECMR_ELB = 0x00000004,
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ECMR_DM = 0x00000002, ECMR_PRM = 0x00000001,
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};
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/* ECSR */
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enum ECSR_STATUS_BIT {
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ECSR_BRCRX = 0x20, ECSR_PSRTO = 0x10,
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ECSR_LCHNG = 0x04,
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ECSR_MPD = 0x02, ECSR_ICD = 0x01,
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};
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#define DEFAULT_ECSR_INIT (ECSR_BRCRX | ECSR_PSRTO | ECSR_LCHNG | \
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ECSR_ICD | ECSIPR_MPDIP)
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/* ECSIPR */
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enum ECSIPR_STATUS_MASK_BIT {
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ECSIPR_BRCRXIP = 0x20, ECSIPR_PSRTOIP = 0x10,
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ECSIPR_LCHNGIP = 0x04,
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ECSIPR_MPDIP = 0x02, ECSIPR_ICDIP = 0x01,
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};
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#define DEFAULT_ECSIPR_INIT (ECSIPR_BRCRXIP | ECSIPR_PSRTOIP | \
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ECSIPR_LCHNGIP | ECSIPR_ICDIP | ECSIPR_MPDIP)
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/* APR */
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enum APR_BIT {
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APR_AP = 0x00000001,
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};
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/* MPR */
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enum MPR_BIT {
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MPR_MP = 0x00000001,
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};
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/* TRSCER */
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enum DESC_I_BIT {
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DESC_I_TINT4 = 0x0800, DESC_I_TINT3 = 0x0400, DESC_I_TINT2 = 0x0200,
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DESC_I_TINT1 = 0x0100, DESC_I_RINT8 = 0x0080, DESC_I_RINT5 = 0x0010,
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DESC_I_RINT4 = 0x0008, DESC_I_RINT3 = 0x0004, DESC_I_RINT2 = 0x0002,
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DESC_I_RINT1 = 0x0001,
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};
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#define DEFAULT_TRSCER_ERR_MASK (DESC_I_RINT8 | DESC_I_RINT5 | DESC_I_TINT2)
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/* RPADIR */
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enum RPADIR_BIT {
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RPADIR_PADS1 = 0x20000, RPADIR_PADS0 = 0x10000,
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RPADIR_PADR = 0x0003f,
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};
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/* FDR */
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#define DEFAULT_FDR_INIT 0x00000707
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/* ARSTR */
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enum ARSTR_BIT { ARSTR_ARST = 0x00000001, };
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/* TSU_FWEN0 */
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enum TSU_FWEN0_BIT {
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TSU_FWEN0_0 = 0x00000001,
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};
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/* TSU_ADSBSY */
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enum TSU_ADSBSY_BIT {
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TSU_ADSBSY_0 = 0x00000001,
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};
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/* TSU_TEN */
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enum TSU_TEN_BIT {
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TSU_TEN_0 = 0x80000000,
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};
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/* TSU_FWSL0 */
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enum TSU_FWSL0_BIT {
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TSU_FWSL0_FW50 = 0x1000, TSU_FWSL0_FW40 = 0x0800,
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TSU_FWSL0_FW30 = 0x0400, TSU_FWSL0_FW20 = 0x0200,
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TSU_FWSL0_FW10 = 0x0100, TSU_FWSL0_RMSA0 = 0x0010,
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};
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/* TSU_FWSLC */
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enum TSU_FWSLC_BIT {
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TSU_FWSLC_POSTENU = 0x2000, TSU_FWSLC_POSTENL = 0x1000,
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TSU_FWSLC_CAMSEL03 = 0x0080, TSU_FWSLC_CAMSEL02 = 0x0040,
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TSU_FWSLC_CAMSEL01 = 0x0020, TSU_FWSLC_CAMSEL00 = 0x0010,
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TSU_FWSLC_CAMSEL13 = 0x0008, TSU_FWSLC_CAMSEL12 = 0x0004,
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TSU_FWSLC_CAMSEL11 = 0x0002, TSU_FWSLC_CAMSEL10 = 0x0001,
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};
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/* TSU_VTAGn */
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#define TSU_VTAG_ENABLE 0x80000000
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#define TSU_VTAG_VID_MASK 0x00000fff
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/* The sh ether Tx buffer descriptors.
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* This structure should be 20 bytes.
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*/
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struct sh_eth_txdesc {
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u32 status; /* TD0 */
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u32 len; /* TD1 */
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u32 addr; /* TD2 */
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u32 pad0; /* padding data */
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} __aligned(2) __packed;
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/* The sh ether Rx buffer descriptors.
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* This structure should be 20 bytes.
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*/
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struct sh_eth_rxdesc {
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u32 status; /* RD0 */
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u32 len; /* RD1 */
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u32 addr; /* RD2 */
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u32 pad0; /* padding data */
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} __aligned(2) __packed;
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/* This structure is used by each CPU dependency handling. */
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struct sh_eth_cpu_data {
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/* optional functions */
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void (*chip_reset)(struct net_device *ndev);
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void (*set_duplex)(struct net_device *ndev);
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void (*set_rate)(struct net_device *ndev);
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/* mandatory initialize value */
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int register_type;
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u32 eesipr_value;
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/* optional initialize value */
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u32 ecsr_value;
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u32 ecsipr_value;
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u32 fdr_value;
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u32 fcftr_value;
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u32 rpadir_value;
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/* interrupt checking mask */
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u32 tx_check;
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u32 eesr_err_check;
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/* Error mask */
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u32 trscer_err_mask;
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/* hardware features */
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unsigned long irq_flags; /* IRQ configuration flags */
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unsigned no_psr:1; /* EtherC DO NOT have PSR */
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unsigned apr:1; /* EtherC have APR */
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unsigned mpr:1; /* EtherC have MPR */
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unsigned tpauser:1; /* EtherC have TPAUSER */
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unsigned bculr:1; /* EtherC have BCULR */
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unsigned tsu:1; /* EtherC have TSU */
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unsigned hw_swap:1; /* E-DMAC have DE bit in EDMR */
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unsigned rpadir:1; /* E-DMAC have RPADIR */
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unsigned no_trimd:1; /* E-DMAC DO NOT have TRIMD */
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unsigned no_ade:1; /* E-DMAC DO NOT have ADE bit in EESR */
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unsigned hw_checksum:1; /* E-DMAC has CSMR */
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unsigned select_mii:1; /* EtherC have RMII_MII (MII select register) */
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unsigned rmiimode:1; /* EtherC has RMIIMODE register */
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unsigned rtrate:1; /* EtherC has RTRATE register */
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unsigned magic:1; /* EtherC has ECMR.MPDE and ECSR.MPD */
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};
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struct sh_eth_private {
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struct platform_device *pdev;
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struct sh_eth_cpu_data *cd;
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const u16 *reg_offset;
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void __iomem *addr;
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void __iomem *tsu_addr;
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struct clk *clk;
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u32 num_rx_ring;
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u32 num_tx_ring;
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dma_addr_t rx_desc_dma;
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dma_addr_t tx_desc_dma;
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struct sh_eth_rxdesc *rx_ring;
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struct sh_eth_txdesc *tx_ring;
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struct sk_buff **rx_skbuff;
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struct sk_buff **tx_skbuff;
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spinlock_t lock; /* Register access lock */
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u32 cur_rx, dirty_rx; /* Producer/consumer ring indices */
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u32 cur_tx, dirty_tx;
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|
u32 rx_buf_sz; /* Based on MTU+slack. */
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struct napi_struct napi;
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bool irq_enabled;
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|
/* MII transceiver section. */
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|
u32 phy_id; /* PHY ID */
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|
struct mii_bus *mii_bus; /* MDIO bus control */
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|
int link;
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|
phy_interface_t phy_interface;
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|
int msg_enable;
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|
int speed;
|
|
int duplex;
|
|
int port; /* for TSU */
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|
int vlan_num_ids; /* for VLAN tag filter */
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|
|
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unsigned no_ether_link:1;
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|
unsigned ether_link_active_low:1;
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|
unsigned is_opened:1;
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|
unsigned wol_enabled:1;
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|
};
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|
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static inline void sh_eth_soft_swap(char *src, int len)
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|
{
|
|
#ifdef __LITTLE_ENDIAN__
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|
u32 *p = (u32 *)src;
|
|
u32 *maxp;
|
|
maxp = p + ((len + sizeof(u32) - 1) / sizeof(u32));
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|
|
|
for (; p < maxp; p++)
|
|
*p = swab32(*p);
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#endif
|
|
}
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|
|
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static inline void *sh_eth_tsu_get_offset(struct sh_eth_private *mdp,
|
|
int enum_index)
|
|
{
|
|
return mdp->tsu_addr + mdp->reg_offset[enum_index];
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|
}
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|
|
|
static inline void sh_eth_tsu_write(struct sh_eth_private *mdp, u32 data,
|
|
int enum_index)
|
|
{
|
|
iowrite32(data, mdp->tsu_addr + mdp->reg_offset[enum_index]);
|
|
}
|
|
|
|
static inline u32 sh_eth_tsu_read(struct sh_eth_private *mdp, int enum_index)
|
|
{
|
|
return ioread32(mdp->tsu_addr + mdp->reg_offset[enum_index]);
|
|
}
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|
|
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#endif /* #ifndef __SH_ETH_H__ */
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