From 2f94eac8102294109febd5e34655cb2cd2a5e201 Mon Sep 17 00:00:00 2001 From: gdisirio Date: Thu, 24 Apr 2008 09:36:56 +0000 Subject: git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@278 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- ports/ARM7-AT91SAM7X/mii.h | 152 ++++++++++++++++++++++++++++++++++++++ ports/ARM7-AT91SAM7X/sam7x_emac.c | 97 ++++++++++++++++++++++++ ports/ARM7-AT91SAM7X/sam7x_emac.h | 73 ++++++++++++++++++ 3 files changed, 322 insertions(+) create mode 100644 ports/ARM7-AT91SAM7X/mii.h create mode 100644 ports/ARM7-AT91SAM7X/sam7x_emac.c create mode 100644 ports/ARM7-AT91SAM7X/sam7x_emac.h (limited to 'ports/ARM7-AT91SAM7X') diff --git a/ports/ARM7-AT91SAM7X/mii.h b/ports/ARM7-AT91SAM7X/mii.h new file mode 100644 index 000000000..062d074bc --- /dev/null +++ b/ports/ARM7-AT91SAM7X/mii.h @@ -0,0 +1,152 @@ +/* + ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +/* + * Parts of this file are borrowed by the Linux include file linux/mii.h: + * Copyright (C) 1996, 1999, 2001 David S. Miller (davem@redhat.com) + */ + +#ifndef _MII_H_ +#define _MII_H_ + +/* Generic MII registers. */ +#define MII_BMCR 0x00 /* Basic mode control register */ +#define MII_BMSR 0x01 /* Basic mode status register */ +#define MII_PHYSID1 0x02 /* PHYS ID 1 */ +#define MII_PHYSID2 0x03 /* PHYS ID 2 */ +#define MII_ADVERTISE 0x04 /* Advertisement control reg */ +#define MII_LPA 0x05 /* Link partner ability reg */ +#define MII_EXPANSION 0x06 /* Expansion register */ +#define MII_CTRL1000 0x09 /* 1000BASE-T control */ +#define MII_STAT1000 0x0a /* 1000BASE-T status */ +#define MII_ESTATUS 0x0f /* Extended Status */ +#define MII_DCOUNTER 0x12 /* Disconnect counter */ +#define MII_FCSCOUNTER 0x13 /* False carrier counter */ +#define MII_NWAYTEST 0x14 /* N-way auto-neg test reg */ +#define MII_RERRCOUNTER 0x15 /* Receive error counter */ +#define MII_SREVISION 0x16 /* Silicon revision */ +#define MII_RESV1 0x17 /* Reserved... */ +#define MII_LBRERROR 0x18 /* Lpback, rx, bypass error */ +#define MII_PHYADDR 0x19 /* PHY address */ +#define MII_RESV2 0x1a /* Reserved... */ +#define MII_TPISTATUS 0x1b /* TPI status for 10mbps */ +#define MII_NCONFIG 0x1c /* Network interface config */ + +/* Basic mode control register. */ +#define BMCR_RESV 0x003f /* Unused... */ +#define BMCR_SPEED1000 0x0040 /* MSB of Speed (1000) */ +#define BMCR_CTST 0x0080 /* Collision test */ +#define BMCR_FULLDPLX 0x0100 /* Full duplex */ +#define BMCR_ANRESTART 0x0200 /* Auto negotiation restart */ +#define BMCR_ISOLATE 0x0400 /* Disconnect DP83840 from MII */ +#define BMCR_PDOWN 0x0800 /* Powerdown the DP83840 */ +#define BMCR_ANENABLE 0x1000 /* Enable auto negotiation */ +#define BMCR_SPEED100 0x2000 /* Select 100Mbps */ +#define BMCR_LOOPBACK 0x4000 /* TXD loopback bits */ +#define BMCR_RESET 0x8000 /* Reset the DP83840 */ + +/* Basic mode status register. */ +#define BMSR_ERCAP 0x0001 /* Ext-reg capability */ +#define BMSR_JCD 0x0002 /* Jabber detected */ +#define BMSR_LSTATUS 0x0004 /* Link status */ +#define BMSR_ANEGCAPABLE 0x0008 /* Able to do auto-negotiation */ +#define BMSR_RFAULT 0x0010 /* Remote fault detected */ +#define BMSR_ANEGCOMPLETE 0x0020 /* Auto-negotiation complete */ +#define BMSR_RESV 0x00c0 /* Unused... */ +#define BMSR_ESTATEN 0x0100 /* Extended Status in R15 */ +#define BMSR_100HALF2 0x0200 /* Can do 100BASE-T2 HDX */ +#define BMSR_100FULL2 0x0400 /* Can do 100BASE-T2 FDX */ +#define BMSR_10HALF 0x0800 /* Can do 10mbps, half-duplex */ +#define BMSR_10FULL 0x1000 /* Can do 10mbps, full-duplex */ +#define BMSR_100HALF 0x2000 /* Can do 100mbps, half-duplex */ +#define BMSR_100FULL 0x4000 /* Can do 100mbps, full-duplex */ +#define BMSR_100BASE4 0x8000 /* Can do 100mbps, 4k packets */ + +/* Advertisement control register. */ +#define ADVERTISE_SLCT 0x001f /* Selector bits */ +#define ADVERTISE_CSMA 0x0001 /* Only selector supported */ +#define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */ +#define ADVERTISE_1000XFULL 0x0020 /* Try for 1000BASE-X full-duplex */ +#define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */ +#define ADVERTISE_1000XHALF 0x0040 /* Try for 1000BASE-X half-duplex */ +#define ADVERTISE_100HALF 0x0080 /* Try for 100mbps half-duplex */ +#define ADVERTISE_1000XPAUSE 0x0080 /* Try for 1000BASE-X pause */ +#define ADVERTISE_100FULL 0x0100 /* Try for 100mbps full-duplex */ +#define ADVERTISE_1000XPSE_ASYM 0x0100 /* Try for 1000BASE-X asym pause */ +#define ADVERTISE_100BASE4 0x0200 /* Try for 100mbps 4k packets */ +#define ADVERTISE_PAUSE_CAP 0x0400 /* Try for pause */ +#define ADVERTISE_PAUSE_ASYM 0x0800 /* Try for asymetric pause */ +#define ADVERTISE_RESV 0x1000 /* Unused... */ +#define ADVERTISE_RFAULT 0x2000 /* Say we can detect faults */ +#define ADVERTISE_LPACK 0x4000 /* Ack link partners response */ +#define ADVERTISE_NPAGE 0x8000 /* Next page bit */ + +#define ADVERTISE_FULL (ADVERTISE_100FULL | ADVERTISE_10FULL | \ + ADVERTISE_CSMA) +#define ADVERTISE_ALL (ADVERTISE_10HALF | ADVERTISE_10FULL | \ + ADVERTISE_100HALF | ADVERTISE_100FULL) + +/* Link partner ability register. */ +#define LPA_SLCT 0x001f /* Same as advertise selector */ +#define LPA_10HALF 0x0020 /* Can do 10mbps half-duplex */ +#define LPA_1000XFULL 0x0020 /* Can do 1000BASE-X full-duplex */ +#define LPA_10FULL 0x0040 /* Can do 10mbps full-duplex */ +#define LPA_1000XHALF 0x0040 /* Can do 1000BASE-X half-duplex */ +#define LPA_100HALF 0x0080 /* Can do 100mbps half-duplex */ +#define LPA_1000XPAUSE 0x0080 /* Can do 1000BASE-X pause */ +#define LPA_100FULL 0x0100 /* Can do 100mbps full-duplex */ +#define LPA_1000XPAUSE_ASYM 0x0100 /* Can do 1000BASE-X pause asym*/ +#define LPA_100BASE4 0x0200 /* Can do 100mbps 4k packets */ +#define LPA_PAUSE_CAP 0x0400 /* Can pause */ +#define LPA_PAUSE_ASYM 0x0800 /* Can pause asymetrically */ +#define LPA_RESV 0x1000 /* Unused... */ +#define LPA_RFAULT 0x2000 /* Link partner faulted */ +#define LPA_LPACK 0x4000 /* Link partner acked us */ +#define LPA_NPAGE 0x8000 /* Next page bit */ + +#define LPA_DUPLEX (LPA_10FULL | LPA_100FULL) +#define LPA_100 (LPA_100FULL | LPA_100HALF | LPA_100BASE4) + +/* Expansion register for auto-negotiation. */ +#define EXPANSION_NWAY 0x0001 /* Can do N-way auto-nego */ +#define EXPANSION_LCWP 0x0002 /* Got new RX page code word */ +#define EXPANSION_ENABLENPAGE 0x0004 /* This enables npage words */ +#define EXPANSION_NPCAPABLE 0x0008 /* Link partner supports npage */ +#define EXPANSION_MFAULTS 0x0010 /* Multiple faults detected */ +#define EXPANSION_RESV 0xffe0 /* Unused... */ + +#define ESTATUS_1000_TFULL 0x2000 /* Can do 1000BT Full */ +#define ESTATUS_1000_THALF 0x1000 /* Can do 1000BT Half */ + +/* N-way test register. */ +#define NWAYTEST_RESV1 0x00ff /* Unused... */ +#define NWAYTEST_LOOPBACK 0x0100 /* Enable loopback for N-way */ +#define NWAYTEST_RESV2 0xfe00 /* Unused... */ + +/* 1000BASE-T Control register */ +#define ADVERTISE_1000FULL 0x0200 /* Advertise 1000BASE-T full duplex */ +#define ADVERTISE_1000HALF 0x0100 /* Advertise 1000BASE-T half duplex */ + +/* 1000BASE-T Status register */ +#define LPA_1000LOCALRXOK 0x2000 /* Link partner local receiver status */ +#define LPA_1000REMRXOK 0x1000 /* Link partner remote receiver status */ +#define LPA_1000FULL 0x0800 /* Link partner 1000BASE-T full duplex */ +#define LPA_1000HALF 0x0400 /* Link partner 1000BASE-T half duplex */ + +#endif /* _MII_H_ */ diff --git a/ports/ARM7-AT91SAM7X/sam7x_emac.c b/ports/ARM7-AT91SAM7X/sam7x_emac.c new file mode 100644 index 000000000..5542e74d2 --- /dev/null +++ b/ports/ARM7-AT91SAM7X/sam7x_emac.c @@ -0,0 +1,97 @@ +/* + ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +#include + +#include "board.h" +#include "sam7x_emac.h" +#include "mii.h" +#include "at91lib/aic.h" + +static BufDescriptorEntry rent[EMAC_RECEIVE_BUFFERS] __attribute__((aligned(4))); +//static BufDescriptorEntry tent[EMAC_TRANSMIT_BUFFERS] __attribute__((aligned(4))); +static uint8_t rbuffers[128 * EMAC_RECEIVE_BUFFERS] __attribute__((aligned(4))); + +EventSource TransmitDone, ReceiveNotEmpty; + +#define AT91C_PB15_ERXDV AT91C_PB15_ERXDV_ECRSDV +#define EMAC_PIN_MASK (AT91C_PB1_ETXEN | AT91C_PB2_ETX0 | \ + AT91C_PB3_ETX1 | AT91C_PB4_ECRS | \ + AT91C_PB5_ERX0 | AT91C_PB6_ERX1 | \ + AT91C_PB7_ERXER | AT91C_PB8_EMDC | \ + AT91C_PB9_EMDIO | AT91C_PB10_ETX2 | \ + AT91C_PB11_ETX3 | AT91C_PB12_ETXER | \ + AT91C_PB13_ERX2 | AT91C_PB14_ERX3 | \ + AT91C_PB15_ERXDV | AT91C_PB16_ECOL | \ + AT91C_PB17_ERXCK) + +/* + * EMAC subsystem initialization. + */ +void InitEMAC(int prio) { + int i; + + for (i = 0; i < EMAC_RECEIVE_BUFFERS; i++) { + rent[i].w1 = (uint32_t)&rbuffers[i * 128]; + rent[i].w2 = 0; + } + rent[EMAC_RECEIVE_BUFFERS - 1].w1 |= W1_R_WRAP; + + /* + * Disables default pullups, the PHY has an internal pulldowns. + * Selects MII mode. + */ + AT91C_BASE_PIOB->PIO_PPUDR = AT91C_PB15_ERXDV | AT91C_PB16_ECOL; + + /* + * PHY powerdown. + */ + AT91C_BASE_PIOB->PIO_OER = PIOB_PHY_PD; // Becomes an output. + AT91C_BASE_PIOB->PIO_PPUDR = PIOB_PHY_PD; // Default pullup disabled. + AT91C_BASE_PIOB->PIO_CODR = PIOB_PHY_PD; // Output to low level. + + /* + * PHY reset by pulsing the NRST pin. + */ + AT91C_BASE_RSTC->RSTC_RMR = 0xA5000100; + AT91C_BASE_RSTC->RSTC_RCR = 0xA5000000 | AT91C_RSTC_EXTRST; + while (!(AT91C_BASE_RSTC->RSTC_RSR & AT91C_RSTC_NRSTL)) + ; + + /* + * EMAC pins setup. + */ + AT91C_BASE_PIOB->PIO_ASR = EMAC_PIN_MASK; + AT91C_BASE_PIOB->PIO_PDR = EMAC_PIN_MASK; + AT91C_BASE_PIOB->PIO_PPUDR = EMAC_PIN_MASK; // ????? + + /* + * EMAC setup. + */ + AT91C_BASE_EMAC->EMAC_NCR |= AT91C_EMAC_MPE; // Enable Management Port. + AT91C_BASE_EMAC->EMAC_NCFGR |= 2 << 10; // CLK = MCK / 32 + + chThdSleep(5); +} + +/* + * Transmits a data buffer (whole ethernet frame). + */ +//bool_t EMACTransmit(uint8_t *buf, size_t size) { +//} diff --git a/ports/ARM7-AT91SAM7X/sam7x_emac.h b/ports/ARM7-AT91SAM7X/sam7x_emac.h new file mode 100644 index 000000000..6f06d7a02 --- /dev/null +++ b/ports/ARM7-AT91SAM7X/sam7x_emac.h @@ -0,0 +1,73 @@ +/* + ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio. + + This file is part of ChibiOS/RT. + + ChibiOS/RT is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + ChibiOS/RT is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +*/ + +#ifndef _SAM7X_EMAC_H_ +#define _SAM7X_EMAC_H_ + +#define EMAC_RECEIVE_BUFFERS 60 +#define EMAC_TRANSMIT_BUFFERS 12 + +typedef struct { + uint32_t w1; + uint32_t w2; +} BufDescriptorEntry; + +#define W1_R_OWNERSHIP 0x00000001 +#define W1_R_WRAP 0x00000002 +#define W1_R_ADDRESS_MASK 0xFFFFFFFC + +#define W2_R_LENGTH_MASK 0x00000FFF +#define W2_R_FRAME_START 0x00004000 +#define W2_R_FRAME_END 0x00008000 +#define W2_R_CFI 0x00010000 +#define W2_R_VLAN_PRIO_MASK 0x000E0000 +#define W2_R_PRIO_TAG_DETECTED 0x00100000 +#define W2_R_VLAN_TAG_DETECTED 0x00200000 +#define W2_R_TYPE_ID_MATCH 0x00400000 +#define W2_R_ADDR4_MATCH 0x00800000 +#define W2_R_ADDR3_MATCH 0x01000000 +#define W2_R_ADDR2_MATCH 0x02000000 +#define W2_R_ADDR1_MATCH 0x04000000 +#define W2_R_RFU1 0x08000000 +#define W2_R_ADDR_EXT_MATCH 0x10000000 +#define W2_R_UNICAST_MATCH 0x20000000 +#define W2_R_MULTICAST_MATCH 0x40000000 +#define W2_R_BROADCAST_DETECTED 0x80000000 + +#define W2_T_LENGTH_MASK 0x000007FF +#define W2_T_RFU1 0x00003800 +#define W2_T_LAST_BUFFER 0x00004000 +#define W2_T_NO_CRC 0x00008000 +#define W2_T_RFU2 0x07FF0000 +#define W2_T_BUFFERS_EXHAUSTED 0x08000000 +#define W2_T_TRANSMIT_UNDERRUN 0x10000000 +#define W2_T_RETRY_LIMIT_EXC 0x20000000 +#define W2_T_WRAP 0x40000000 +#define W2_T_USED 0x80000000 + +#ifdef __cplusplus +extern "C" { +#endif + void InitEMAC(int prio); + bool_t EMACTransmit(uint8_t *buf, size_t size); +#ifdef __cplusplus +} +#endif + +#endif /* _SAM7X_EMAC_H_ */ -- cgit v1.2.3