Hi Grant and everybody,
my patches are below. All patches are in u-boot-microblaze branch.
Signed-off-by: Michal Simek monstr@monstr.eu
Emac driver for Microblaze.
Michal Simek
diff --git a/Makefile b/Makefile index bfa3846..146f647 100644 --- a/Makefile +++ b/Makefile @@ -143,7 +143,7 @@ ifeq ($(ARCH),m68k) CROSS_COMPILE = m68k-elf- endif ifeq ($(ARCH),microblaze) -CROSS_COMPILE = mb- +CROSS_COMPILE = microblaze-uclinux- endif ifeq ($(ARCH),blackfin) CROSS_COMPILE = bfin-uclinux- @@ -199,7 +199,7 @@ LIBS += cpu/ixp/npe/libnpe.a endif LIBS += lib_$(ARCH)/lib$(ARCH).a LIBS += fs/cramfs/libcramfs.a fs/fat/libfat.a fs/fdos/libfdos.a fs/jffs2/libjffs2.a \ - fs/reiserfs/libreiserfs.a fs/ext2/libext2fs.a + fs/reiserfs/libreiserfs.a fs/ext2/libext2fs.a fs/romfs/libromfs.a LIBS += net/libnet.a LIBS += disk/libdisk.a LIBS += rtc/librtc.a @@ -207,6 +207,7 @@ LIBS += dtt/libdtt.a LIBS += drivers/libdrivers.a LIBS += drivers/nand/libnand.a LIBS += drivers/nand_legacy/libnand_legacy.a +LIBS += drivers/net/libnetdrv.a ifeq ($(CPU),mpc83xx) LIBS += drivers/qe/qe.a endif @@ -316,14 +317,14 @@ depend dep: tags ctags: ctags -w -o $(OBJTREE)/ctags `find $(SUBDIRS) include \ lib_generic board/$(BOARDDIR) cpu/$(CPU) lib_$(ARCH) \ - fs/cramfs fs/fat fs/fdos fs/jffs2 \ + fs/cramfs fs/fat fs/fdos fs/jffs2 fs/romfs\ net disk rtc dtt drivers drivers/sk98lin common \ ( -name CVS -prune ) -o ( -name '*.[ch]' -print )`
etags: etags -a -o $(OBJTREE)/etags `find $(SUBDIRS) include \ lib_generic board/$(BOARDDIR) cpu/$(CPU) lib_$(ARCH) \ - fs/cramfs fs/fat fs/fdos fs/jffs2 \ + fs/cramfs fs/fat fs/fdos fs/jffs2 fs/romfs\ net disk rtc dtt drivers drivers/sk98lin common \ ( -name CVS -prune ) -o ( -name '*.[ch]' -print )`
diff --git a/drivers/net/Makefile b/drivers/net/Makefile index e69de29..7342dc8 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -0,0 +1,45 @@ +# +# (C) Copyright 2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +include $(TOPDIR)/config.mk + +LIB := $(obj)libnetdrv.a + +COBJS := xilinx_emaclite.o xilinx_emac.o + +SRCS := $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS)) + +all: $(LIB) + +$(LIB): $(obj).depend $(OBJS) + $(AR) $(ARFLAGS) $@ $(OBJS) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/drivers/net/xilinx_emac.c b/drivers/net/xilinx_emac.c index e69de29..d44f31e 100644 --- a/drivers/net/xilinx_emac.c +++ b/drivers/net/xilinx_emac.c @@ -0,0 +1,372 @@ +/* + * (C) Copyright 2007 Michal Simek + * + * Michal SIMEK monstr@monstr.eu + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + * Based on Xilinx drivers + * + */ + +#include <config.h> +#include <common.h> +#include <net.h> +#include <asm/io.h> +#include <asm/asm.h> +#include "xilinx_emac.h" + +#ifdef XILINX_EMAC + +#undef DEBUG + +#define ENET_MAX_MTU PKTSIZE +#define ENET_ADDR_LENGTH 6 + +static unsigned int etherrxbuff[PKTSIZE_ALIGN/4]; /* Receive buffer */ + +static u8 EMACAddr[ENET_ADDR_LENGTH] = { 0x00, 0x0a, 0x35, 0x00, 0x22, 0x01 }; + +static XEmac Emac; + +void eth_halt(void) +{ + return; +} + +int eth_init(bd_t * bis) +{ + u32 HelpReg; +#ifdef DEBUG + printf("EMAC Initialization Started\n\r"); +#endif + if (Emac.IsStarted) { + puts("Emac is started\n"); + return 0; + } + + memset (&Emac, 0, sizeof (XEmac)); + + Emac.BaseAddress = XILINX_EMAC_BASEADDR; + + /* Setting up FIFOs */ + Emac.RecvFifo.RegBaseAddress = Emac.BaseAddress + + XEM_PFIFO_RXREG_OFFSET; + Emac.RecvFifo.DataBaseAddress = Emac.BaseAddress + + XEM_PFIFO_RXDATA_OFFSET; + out_be32 (Emac.RecvFifo.RegBaseAddress, XPF_RESET_FIFO_MASK); + + Emac.SendFifo.RegBaseAddress = Emac.BaseAddress + + XEM_PFIFO_TXREG_OFFSET; + Emac.SendFifo.DataBaseAddress = Emac.BaseAddress + + XEM_PFIFO_TXDATA_OFFSET; + out_be32 (Emac.SendFifo.RegBaseAddress, XPF_RESET_FIFO_MASK); + + /* Reset the entire IPIF */ + out_be32 (Emac.BaseAddress + XIIF_V123B_RESETR_OFFSET, + XIIF_V123B_RESET_MASK); + + /* Stopping EMAC for setting up MAC */ + HelpReg = in_be32 (Emac.BaseAddress + XEM_ECR_OFFSET); + HelpReg &= ~(XEM_ECR_XMIT_ENABLE_MASK | XEM_ECR_RECV_ENABLE_MASK); + out_be32 (Emac.BaseAddress + XEM_ECR_OFFSET, HelpReg); + + if (!getenv("ethaddr")) { + memcpy(bis->bi_enetaddr, EMACAddr, ENET_ADDR_LENGTH); + } + + /* Set the device station address high and low registers */ + HelpReg = (bis->bi_enetaddr[0] << 8) | bis->bi_enetaddr[1]; + out_be32 (Emac.BaseAddress + XEM_SAH_OFFSET, HelpReg); + HelpReg = (bis->bi_enetaddr[2] << 24) | (bis->bi_enetaddr[3] << 16) | + (bis->bi_enetaddr[4] << 8) | bis->bi_enetaddr[5]; + out_be32 (Emac.BaseAddress + XEM_SAL_OFFSET, HelpReg); + + + HelpReg = XEM_ECR_UNICAST_ENABLE_MASK | XEM_ECR_BROAD_ENABLE_MASK | + XEM_ECR_FULL_DUPLEX_MASK | XEM_ECR_XMIT_FCS_ENABLE_MASK | + XEM_ECR_XMIT_PAD_ENABLE_MASK | XEM_ECR_PHY_ENABLE_MASK; + out_be32 (Emac.BaseAddress + XEM_ECR_OFFSET, HelpReg); + + Emac.IsStarted = 1; + + /* Enable the transmitter, and receiver */ + HelpReg = in_be32 (Emac.BaseAddress + XEM_ECR_OFFSET); + HelpReg &= ~(XEM_ECR_XMIT_RESET_MASK | XEM_ECR_RECV_RESET_MASK); + HelpReg |= (XEM_ECR_XMIT_ENABLE_MASK | XEM_ECR_RECV_ENABLE_MASK); + out_be32 (Emac.BaseAddress + XEM_ECR_OFFSET, HelpReg); + + printf("EMAC Initialization complete\n\r"); + return 0; +} + +int eth_send(volatile void *ptr, int len) +{ + u32 IntrStatus; + u32 XmitStatus; + u32 FifoCount; + u32 WordCount; + u32 ExtraByteCount; + u32 *WordBuffer = (u32 *) ptr; + + if (len > ENET_MAX_MTU) + len = ENET_MAX_MTU; + + /* + * Check for overruns and underruns for the transmit status and length + * FIFOs and make sure the send packet FIFO is not deadlocked. + * Any of these conditions is bad enough that we do not want to + * continue. The upper layer software should reset the device to resolve + * the error. + */ + IntrStatus = in_be32 ((Emac.BaseAddress) + XIIF_V123B_IISR_OFFSET); + if (IntrStatus & (XEM_EIR_XMIT_SFIFO_OVER_MASK | + XEM_EIR_XMIT_LFIFO_OVER_MASK)) { +#ifdef DEBUG + puts ("Transmitting overrun error\n"); +#endif + return 0; + } else if (IntrStatus & (XEM_EIR_XMIT_SFIFO_UNDER_MASK | + XEM_EIR_XMIT_LFIFO_UNDER_MASK)) { +#ifdef DEBUG + puts ("Transmitting underrun error\n"); +#endif + return 0; + } else if (in_be32 (Emac.SendFifo.RegBaseAddress + + XPF_COUNT_STATUS_REG_OFFSET) & XPF_DEADLOCK_MASK) { +#ifdef DEBUG + puts("Transmitting fifo error\n"); +#endif + return 0; + } + + /* + * Before writing to the data FIFO, make sure the length FIFO is not + * full. The data FIFO might not be full yet even though the length FIFO + * is. This avoids an overrun condition on the length FIFO and keeps the + * FIFOs in sync. + * + * Clear the latched LFIFO_FULL bit so next time around the most + * current status is represented + */ + if (IntrStatus & XEM_EIR_XMIT_LFIFO_FULL_MASK) { + out_be32 ((Emac.BaseAddress) + XIIF_V123B_IISR_OFFSET, IntrStatus + & XEM_EIR_XMIT_LFIFO_FULL_MASK); +#ifdef DEBUG + puts ("Fifo is full\n"); +#endif + return 0; + } + + /* get the count of how many words may be inserted into the FIFO */ + FifoCount = in_be32 (Emac.SendFifo.RegBaseAddress + + XPF_COUNT_STATUS_REG_OFFSET) & XPF_COUNT_MASK; + WordCount = len >> 2; + ExtraByteCount = len & 0x3; + + if (FifoCount < WordCount) { +#ifdef DEBUG + puts ("Sending packet is larger then size of FIFO\n"); +#endif + return 0; + } + + for (FifoCount = 0; FifoCount < WordCount; FifoCount++) { + out_be32 (Emac.SendFifo.DataBaseAddress, WordBuffer[FifoCount]); + } + if (ExtraByteCount > 0) { + u32 LastWord = 0; + u8 *ExtraBytesBuffer = (u8 *) (WordBuffer + WordCount); + + if (ExtraByteCount == 1) { + LastWord = ExtraBytesBuffer[0] << 24; + } else if (ExtraByteCount == 2) { + LastWord = ExtraBytesBuffer[0] << 24 | + ExtraBytesBuffer[1] << 16; + } else if (ExtraByteCount == 3) { + LastWord = ExtraBytesBuffer[0] << 24 | + ExtraBytesBuffer[1] << 16 | + ExtraBytesBuffer[2] << 8; + } + out_be32 (Emac.SendFifo.DataBaseAddress, LastWord); + } + + /* Loop on the MAC's status to wait for any pause to complete */ + IntrStatus = in_be32 ((Emac.BaseAddress) + XIIF_V123B_IISR_OFFSET); + while ((IntrStatus & XEM_EIR_XMIT_PAUSE_MASK) != 0) { + IntrStatus = in_be32 ((Emac.BaseAddress) + + XIIF_V123B_IISR_OFFSET); + /* Clear the pause status from the transmit status register */ + out_be32 ((Emac.BaseAddress) + XIIF_V123B_IISR_OFFSET, + IntrStatus & XEM_EIR_XMIT_PAUSE_MASK); + } + + /* + * Set the MAC's transmit packet length register to tell it to transmit + */ + out_be32 (Emac.BaseAddress + XEM_TPLR_OFFSET, len); + + /* + * Loop on the MAC's status to wait for the transmit to complete. + * The transmit status is in the FIFO when the XMIT_DONE bit is set. + */ + do { + IntrStatus = in_be32 ((Emac.BaseAddress) + + XIIF_V123B_IISR_OFFSET); + } + while ((IntrStatus & XEM_EIR_XMIT_DONE_MASK) == 0); + + XmitStatus = in_be32 (Emac.BaseAddress + XEM_TSR_OFFSET); + + if (IntrStatus & (XEM_EIR_XMIT_SFIFO_OVER_MASK | + XEM_EIR_XMIT_LFIFO_OVER_MASK)) { +#ifdef DEBUG + puts ("Transmitting overrun error\n"); +#endif + return 0; + } else if (IntrStatus & (XEM_EIR_XMIT_SFIFO_UNDER_MASK | + XEM_EIR_XMIT_LFIFO_UNDER_MASK)) { +#ifdef DEBUG + puts ("Transmitting underrun error\n"); +#endif + return 0; + } + + /* Clear the interrupt status register of transmit statuses */ + out_be32 ((Emac.BaseAddress) + XIIF_V123B_IISR_OFFSET, + IntrStatus & XEM_EIR_XMIT_ALL_MASK); + + /* + * Collision errors are stored in the transmit status register + * instead of the interrupt status register + */ + if ((XmitStatus & XEM_TSR_EXCESS_DEFERRAL_MASK) || + (XmitStatus & XEM_TSR_LATE_COLLISION_MASK)) { +#ifdef DEBUG + puts ("Transmitting collision error\n"); +#endif + return 0; + } + return 1; +} + +int eth_rx(void) +{ + u32 PktLength; + u32 IntrStatus; + u32 FifoCount; + u32 WordCount; + u32 ExtraByteCount; + u32 LastWord; + u8 *ExtraBytesBuffer; + + if (in_be32 (Emac.RecvFifo.RegBaseAddress + XPF_COUNT_STATUS_REG_OFFSET) + & XPF_DEADLOCK_MASK) { + out_be32 (Emac.RecvFifo.RegBaseAddress, XPF_RESET_FIFO_MASK); +#ifdef DEBUG + puts ("Receiving FIFO deadlock\n"); +#endif + return 0; + } + + /* + * Get the interrupt status to know what happened (whether an error occurred + * and/or whether frames have been received successfully). When clearing the + * intr status register, clear only statuses that pertain to receive. + */ + IntrStatus = in_be32 ((Emac.BaseAddress) + XIIF_V123B_IISR_OFFSET); + /* + * Before reading from the length FIFO, make sure the length FIFO is not + * empty. We could cause an underrun error if we try to read from an + * empty FIFO. + */ + if (!(IntrStatus & XEM_EIR_RECV_DONE_MASK)) { +#ifdef DEBUG + /* puts("Receiving FIFO is empty\n"); */ +#endif + return 0; + } + + /* + * Determine, from the MAC, the length of the next packet available + * in the data FIFO (there should be a non-zero length here) + */ + PktLength = in_be32 (Emac.BaseAddress + XEM_RPLR_OFFSET); + if (!PktLength) { + return 0; + } + + /* + * Write the RECV_DONE bit in the status register to clear it. This bit + * indicates the RPLR is non-empty, and we know it's set at this point. + * We clear it so that subsequent entry into this routine will reflect + * the current status. This is done because the non-empty bit is latched + * in the IPIF, which means it may indicate a non-empty condition even + * though there is something in the FIFO. + */ + out_be32 ((Emac.BaseAddress) + XIIF_V123B_IISR_OFFSET, + XEM_EIR_RECV_DONE_MASK); + + FifoCount = in_be32 (Emac.RecvFifo.RegBaseAddress + + XPF_COUNT_STATUS_REG_OFFSET) & XPF_COUNT_MASK; + + if ((FifoCount * 4) < PktLength) { +#ifdef DEBUG + puts ("Receiving FIFO is smaller than packet size.\n"); +#endif + return 0; + } + + WordCount = PktLength >> 2; + ExtraByteCount = PktLength & 0x3; + + for (FifoCount = 0; FifoCount < WordCount; FifoCount++) { + etherrxbuff[FifoCount] = + in_be32 (Emac.RecvFifo.DataBaseAddress); + } + + /* + * if there are extra bytes to handle, read the last word from the FIFO + * and insert the extra bytes into the buffer + */ + if (ExtraByteCount > 0) { + ExtraBytesBuffer = (u8 *) (etherrxbuff + WordCount); + + LastWord = in_be32 (Emac.RecvFifo.DataBaseAddress); + + /* + * one extra byte in the last word, put the byte into the next + * location of the buffer, bytes in a word of the FIFO are + * ordered from most significant byte to least + */ + if (ExtraByteCount == 1) { + ExtraBytesBuffer[0] = (u8) (LastWord >> 24); + } else if (ExtraByteCount == 2) { + ExtraBytesBuffer[0] = (u8) (LastWord >> 24); + ExtraBytesBuffer[1] = (u8) (LastWord >> 16); + } else if (ExtraByteCount == 3) { + ExtraBytesBuffer[0] = (u8) (LastWord >> 24); + ExtraBytesBuffer[1] = (u8) (LastWord >> 16); + ExtraBytesBuffer[2] = (u8) (LastWord >> 8); + } + } + NetReceive((uchar *)etherrxbuff, PktLength); + return 1; +} +#endif diff --git a/drivers/net/xilinx_emac.h b/drivers/net/xilinx_emac.h index e69de29..7c00eeb 100644 --- a/drivers/net/xilinx_emac.h +++ b/drivers/net/xilinx_emac.h @@ -0,0 +1,127 @@ +/* + * (C) Copyright 2007 Michal Simek + * + * Michal SIMEK monstr@monstr.eu + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + * Based on Xilinx drivers + * + */ + +typedef struct { + u32 RegBaseAddress; /* Base address of registers */ + u32 DataBaseAddress; /* Base address of data for FIFOs */ +} XPacketFifoV100b; + +typedef struct { + u32 BaseAddress; /* Base address (of IPIF) */ + u32 IsStarted; /* Device is currently started 0-no, 1-yes */ + XPacketFifoV100b RecvFifo; /* FIFO used to receive frames */ + XPacketFifoV100b SendFifo; /* FIFO used to send frames */ +} XEmac; + +#define XIIF_V123B_IISR_OFFSET 32UL /* IP interrupt status register */ +#define XIIF_V123B_RESET_MASK 0xAUL +#define XIIF_V123B_RESETR_OFFSET 64UL /* reset register */ + +/* This constant is used with the Reset Register */ +#define XPF_RESET_FIFO_MASK 0x0000000A +#define XPF_COUNT_STATUS_REG_OFFSET 4UL + +/* These constants are used with the Occupancy/Vacancy Count Register. This + * register also contains FIFO status */ +#define XPF_COUNT_MASK 0x0000FFFF +#define XPF_DEADLOCK_MASK 0x20000000 + +/* Offset of the MAC registers from the IPIF base address */ +#define XEM_REG_OFFSET 0x1100UL + +/* + * Register offsets for the Ethernet MAC. Each register is 32 bits. + */ +#define XEM_ECR_OFFSET (XEM_REG_OFFSET + 0x4) /* MAC Control */ +#define XEM_SAH_OFFSET (XEM_REG_OFFSET + 0xC) /* Station addr, high */ +#define XEM_SAL_OFFSET (XEM_REG_OFFSET + 0x10) /* Station addr, low */ +#define XEM_RPLR_OFFSET (XEM_REG_OFFSET + 0x1C) /* Rx packet length */ +#define XEM_TPLR_OFFSET (XEM_REG_OFFSET + 0x20) /* Tx packet length */ +#define XEM_TSR_OFFSET (XEM_REG_OFFSET + 0x24) /* Tx status */ + + + +#define XEM_PFIFO_OFFSET 0x2000UL +#define XEM_PFIFO_TXREG_OFFSET (XEM_PFIFO_OFFSET + 0x0) /* Tx registers */ +#define XEM_PFIFO_RXREG_OFFSET (XEM_PFIFO_OFFSET + 0x10) /* Rx registers */ +#define XEM_PFIFO_TXDATA_OFFSET (XEM_PFIFO_OFFSET + 0x100) /* Tx keyhole */ +#define XEM_PFIFO_RXDATA_OFFSET (XEM_PFIFO_OFFSET + 0x200) /* Rx keyhole */ + + +/* + * EMAC Interrupt Registers (Status and Enable) masks. These registers are + * part of the IPIF IP Interrupt registers + */ +/* A mask for all transmit interrupts, used in polled mode */ +#define XEM_EIR_XMIT_ALL_MASK (XEM_EIR_XMIT_DONE_MASK |\ + XEM_EIR_XMIT_ERROR_MASK | \ + XEM_EIR_XMIT_SFIFO_EMPTY_MASK |\ + XEM_EIR_XMIT_LFIFO_FULL_MASK) + +#define XEM_EIR_XMIT_DONE_MASK 0x00000001UL /* Xmit complete */ +#define XEM_EIR_RECV_DONE_MASK 0x00000002UL /* Recv complete */ +#define XEM_EIR_XMIT_ERROR_MASK 0x00000004UL /* Xmit error */ +#define XEM_EIR_RECV_ERROR_MASK 0x00000008UL /* Recv error */ +#define XEM_EIR_XMIT_SFIFO_EMPTY_MASK 0x00000010UL /* Xmit status fifo empty */ +#define XEM_EIR_RECV_LFIFO_EMPTY_MASK 0x00000020UL /* Recv length fifo empty */ +#define XEM_EIR_XMIT_LFIFO_FULL_MASK 0x00000040UL /* Xmit length fifo full */ +#define XEM_EIR_RECV_LFIFO_OVER_MASK 0x00000080UL /* Recv length fifo + * overrun */ +#define XEM_EIR_RECV_LFIFO_UNDER_MASK 0x00000100UL /* Recv length fifo + * underrun */ +#define XEM_EIR_XMIT_SFIFO_OVER_MASK 0x00000200UL /* Xmit status fifo + * overrun */ +#define XEM_EIR_XMIT_SFIFO_UNDER_MASK 0x00000400UL /* Transmit status fifo + * underrun */ +#define XEM_EIR_XMIT_LFIFO_OVER_MASK 0x00000800UL /* Transmit length fifo + * overrun */ +#define XEM_EIR_XMIT_LFIFO_UNDER_MASK 0x00001000UL /* Transmit length fifo + * underrun */ +#define XEM_EIR_XMIT_PAUSE_MASK 0x00002000UL /* Transmit pause pkt + * received */ + +/* + * EMAC Control Register (ECR) + */ +#define XEM_ECR_FULL_DUPLEX_MASK 0x80000000UL /* Full duplex mode */ +#define XEM_ECR_XMIT_RESET_MASK 0x40000000UL /* Reset transmitter */ +#define XEM_ECR_XMIT_ENABLE_MASK 0x20000000UL /* Enable transmitter */ +#define XEM_ECR_RECV_RESET_MASK 0x10000000UL /* Reset receiver */ +#define XEM_ECR_RECV_ENABLE_MASK 0x08000000UL /* Enable receiver */ +#define XEM_ECR_PHY_ENABLE_MASK 0x04000000UL /* Enable PHY */ +#define XEM_ECR_XMIT_PAD_ENABLE_MASK 0x02000000UL /* Enable xmit pad + * insert */ +#define XEM_ECR_XMIT_FCS_ENABLE_MASK 0x01000000UL /* Enable xmit FCS + * insert */ +#define XEM_ECR_UNICAST_ENABLE_MASK 0x00020000UL /* Enable unicast + * addr */ +#define XEM_ECR_BROAD_ENABLE_MASK 0x00008000UL /* Enable broadcast + * addr */ + +/* Transmit Status Register (TSR) */ +#define XEM_TSR_EXCESS_DEFERRAL_MASK 0x80000000UL /* Transmit excess deferral */ +#define XEM_TSR_LATE_COLLISION_MASK 0x01000000UL /* Transmit late collision */ diff --git a/drivers/net/xilinx_emaclite.c b/drivers/net/xilinx_emaclite.c index e69de29..99e7035 100644 --- a/drivers/net/xilinx_emaclite.c +++ b/drivers/net/xilinx_emaclite.c @@ -0,0 +1,378 @@ +/* + * (C) Copyright 2007 Michal Simek + * + * Michal SIMEK monstr@monstr.eu + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <net.h> +#include <config.h> +#include <asm/io.h> + +#ifdef XILINX_EMACLITE_BASEADDR + +#undef DEBUG + +#define ENET_MAX_MTU PKTSIZE +#define ENET_MAX_MTU_ALIGNED PKTSIZE_ALIGN +#define ENET_ADDR_LENGTH 6 + +/* EmacLite constants */ +#define XEL_BUFFER_OFFSET 0x0800 /* Next buffer's offset */ +#define XEL_TPLR_OFFSET 0x07F4 /* Tx packet length */ +#define XEL_TSR_OFFSET 0x07FC /* Tx status */ +#define XEL_RSR_OFFSET 0x17FC /* Rx status */ +#define XEL_RXBUFF_OFFSET 0x1000 /* Receive Buffer */ + +/* Xmit complete */ +#define XEL_TSR_XMIT_BUSY_MASK 0x00000001UL +/* Xmit interrupt enable bit */ +#define XEL_TSR_XMIT_IE_MASK 0x00000008UL +/* Buffer is active, SW bit only */ +#define XEL_TSR_XMIT_ACTIVE_MASK 0x80000000UL +/* Program the MAC address */ +#define XEL_TSR_PROGRAM_MASK 0x00000002UL +/* define for programming the MAC address into the EMAC Lite */ +#define XEL_TSR_PROG_MAC_ADDR (XEL_TSR_XMIT_BUSY_MASK | XEL_TSR_PROGRAM_MASK) + +/* Transmit packet length upper byte */ +#define XEL_TPLR_LENGTH_MASK_HI 0x0000FF00UL +/* Transmit packet length lower byte */ +#define XEL_TPLR_LENGTH_MASK_LO 0x000000FFUL + +/* Recv complete */ +#define XEL_RSR_RECV_DONE_MASK 0x00000001UL +/* Recv interrupt enable bit */ +#define XEL_RSR_RECV_IE_MASK 0x00000008UL + +typedef struct { + unsigned int BaseAddress; /* Base address for device (IPIF) */ + unsigned int NextTxBufferToUse; /* Next TX buffer to write to */ + unsigned int NextRxBufferToUse; /* Next RX buffer to read from */ + unsigned char DeviceId; /* Unique ID of device - for future */ +} XEmacLite; + +static XEmacLite EmacLite; + +static char etherrxbuff[PKTSIZE_ALIGN]; /* Receive buffer */ + +/* hardcoded MAC address for the Xilinx EMAC Core when env is nowhere*/ +#ifdef CFG_ENV_IS_NOWHERE +static u8 EMACAddr[ENET_ADDR_LENGTH] = { 0x00, 0x0a, 0x35, 0x00, 0x22, 0x01 }; +#endif + +void XEmacLite_AlignedRead (u32 * SrcPtr, void *DestPtr, unsigned ByteCount) +{ + unsigned i; + unsigned Length = ByteCount; + u32 AlignBuffer; + u32 *To32Ptr; + u32 *From32Ptr; + u8 *To8Ptr; + u8 *From8Ptr; + + From32Ptr = (u32 *) SrcPtr; + + /* Word aligned buffer, no correction needed. */ + To32Ptr = (u32 *) DestPtr; + while (Length > 3) { + *To32Ptr++ = *From32Ptr++; + Length -= 4; + } + To8Ptr = (u8 *) To32Ptr; + + AlignBuffer = *From32Ptr++; + From8Ptr = (u8 *) & AlignBuffer; + + for (i = 0; i < Length; i++) { + *To8Ptr++ = *From8Ptr++; + } +} + +void XEmacLite_AlignedWrite (void *SrcPtr, u32 * DestPtr, unsigned ByteCount) +{ + unsigned i; + unsigned Length = ByteCount; + u32 AlignBuffer; + u32 *To32Ptr; + u32 *From32Ptr; + u8 *To8Ptr; + u8 *From8Ptr; + To32Ptr = DestPtr; + + From32Ptr = (u32 *) SrcPtr; + while (Length > 3) { + + *To32Ptr++ = *From32Ptr++; + Length -= 4; + } + + AlignBuffer = 0; + To8Ptr = (u8 *) & AlignBuffer; + From8Ptr = (u8 *) From32Ptr; + + for (i = 0; i < Length; i++) { + *To8Ptr++ = *From8Ptr++; + } + + *To32Ptr++ = AlignBuffer; +} + +void eth_halt (void) +{ +#ifdef DEBUG + puts ("eth_halt\n"); +#endif +} + +int eth_init (bd_t * bis) +{ +#ifdef DEBUG + puts ("EmacLite Initialization Started\n"); +#endif + memset (&EmacLite, 0, sizeof (XEmacLite)); + EmacLite.BaseAddress = XILINX_EMACLITE_BASEADDR; + +#ifdef CFG_ENV_IS_NOWHERE + memcpy (bis->bi_enetaddr, EMACAddr, ENET_ADDR_LENGTH); +#endif +/* + * TX - TX_PING & TX_PONG initialization + */ + /* Restart PING TX */ + out_be32 (EmacLite.BaseAddress + XEL_TSR_OFFSET, 0); + /* Copy MAC address */ + XEmacLite_AlignedWrite (bis->bi_enetaddr, + EmacLite.BaseAddress, ENET_ADDR_LENGTH); + /* Set the length */ + out_be32 (EmacLite.BaseAddress + XEL_TPLR_OFFSET, ENET_ADDR_LENGTH); + /* Update the MAC address in the EMAC Lite */ + out_be32 (EmacLite.BaseAddress + XEL_TSR_OFFSET, XEL_TSR_PROG_MAC_ADDR); + /* Wait for EMAC Lite to finish with the MAC address update */ + while ((in_be32 (EmacLite.BaseAddress + XEL_TSR_OFFSET) & + XEL_TSR_PROG_MAC_ADDR) != 0) ; + +#ifdef XILINX_EMACLITE_TX_PING_PONG + /* The same operation with PONG TX */ + out_be32 (EmacLite.BaseAddress + XEL_TSR_OFFSET + XEL_BUFFER_OFFSET, 0); + XEmacLite_AlignedWrite (bis->bi_enetaddr, + EmacLite.BaseAddress + XEL_BUFFER_OFFSET, ENET_ADDR_LENGTH); + out_be32 (EmacLite.BaseAddress + XEL_TPLR_OFFSET, ENET_ADDR_LENGTH); + out_be32 (EmacLite.BaseAddress + XEL_TSR_OFFSET + XEL_BUFFER_OFFSET, + XEL_TSR_PROG_MAC_ADDR); + while ((in_be32 (EmacLite.BaseAddress + XEL_TSR_OFFSET + + XEL_BUFFER_OFFSET) & XEL_TSR_PROG_MAC_ADDR) != 0) ; +#endif + +/* + * RX - RX_PING & RX_PONG initialization + */ + /* Write out the value to flush the RX buffer */ + out_be32 (EmacLite.BaseAddress + XEL_RSR_OFFSET, XEL_RSR_RECV_IE_MASK); +#ifdef XILINX_EMACLITE_RX_PING_PONG + out_be32 (EmacLite.BaseAddress + XEL_RSR_OFFSET + XEL_BUFFER_OFFSET, + XEL_RSR_RECV_IE_MASK); +#endif + +#ifdef DEBUG + puts ("EmacLite Initialization complete\n"); +#endif + return 0; +} + +int XEmacLite_TxBufferAvailable (XEmacLite * InstancePtr) +{ + u32 Register; + u32 TxPingBusy; + u32 TxPongBusy; + /* + * Read the other buffer register + * and determine if the other buffer is available + */ + Register = in_be32 (InstancePtr->BaseAddress + + InstancePtr->NextTxBufferToUse + 0); + TxPingBusy = ((Register & XEL_TSR_XMIT_BUSY_MASK) == + XEL_TSR_XMIT_BUSY_MASK); + + Register = in_be32 (InstancePtr->BaseAddress + + (InstancePtr->NextTxBufferToUse ^ XEL_TSR_OFFSET) + 0); + TxPongBusy = ((Register & XEL_TSR_XMIT_BUSY_MASK) == + XEL_TSR_XMIT_BUSY_MASK); + + return (!(TxPingBusy && TxPongBusy)); +} + +int eth_send (volatile void *ptr, int len) { + + unsigned int Register; + unsigned int BaseAddress; + + unsigned maxtry = 1000; + + if (len > ENET_MAX_MTU) + len = ENET_MAX_MTU; + + while (!XEmacLite_TxBufferAvailable (&EmacLite) && maxtry) { + udelay (10); + maxtry--; + } + + if (!maxtry) { + printf ("Error: Timeout waiting for ethernet TX buffer\n"); + /* Restart PING TX */ + out_be32 (EmacLite.BaseAddress + XEL_TSR_OFFSET, 0); +#ifdef XILINX_EMACLITE_TX_PING_PONG + out_be32 (EmacLite.BaseAddress + XEL_TSR_OFFSET + + XEL_BUFFER_OFFSET, 0); +#endif + return 0; + } + + /* Determine the expected TX buffer address */ + BaseAddress = (EmacLite.BaseAddress + EmacLite.NextTxBufferToUse); + + /* Determine if the expected buffer address is empty */ + Register = in_be32 (BaseAddress + XEL_TSR_OFFSET); + if (((Register & XEL_TSR_XMIT_BUSY_MASK) == 0) + && ((in_be32 ((BaseAddress) + XEL_TSR_OFFSET) + & XEL_TSR_XMIT_ACTIVE_MASK) == 0)) { + +#ifdef XILINX_EMACLITE_TX_PING_PONG + EmacLite.NextTxBufferToUse ^= XEL_BUFFER_OFFSET; +#endif +#ifdef DEBUG + printf ("Send packet from 0x%x\n", BaseAddress); +#endif + /* Write the frame to the buffer */ + XEmacLite_AlignedWrite (ptr, (u32 *) BaseAddress, len); + out_be32 (BaseAddress + XEL_TPLR_OFFSET,(len & + (XEL_TPLR_LENGTH_MASK_HI | XEL_TPLR_LENGTH_MASK_LO))); + Register = in_be32 (BaseAddress + XEL_TSR_OFFSET); + Register |= XEL_TSR_XMIT_BUSY_MASK; + if ((Register & XEL_TSR_XMIT_IE_MASK) != 0) { + Register |= XEL_TSR_XMIT_ACTIVE_MASK; + } + out_be32 (BaseAddress + XEL_TSR_OFFSET, Register); + return 1; + } +#ifdef XILINX_EMACLITE_TX_PING_PONG + /* Switch to second buffer */ + BaseAddress ^= XEL_BUFFER_OFFSET; + /* Determine if the expected buffer address is empty */ + Register = in_be32 (BaseAddress + XEL_TSR_OFFSET); + if (((Register & XEL_TSR_XMIT_BUSY_MASK) == 0) + && ((in_be32 ((BaseAddress) + XEL_TSR_OFFSET) + & XEL_TSR_XMIT_ACTIVE_MASK) == 0)) { +#ifdef DEBUG + printf ("Send packet from 0x%x\n", BaseAddress); +#endif + /* Write the frame to the buffer */ + XEmacLite_AlignedWrite (ptr, (u32 *) BaseAddress, len); + out_be32 (BaseAddress + XEL_TPLR_OFFSET,(len & + (XEL_TPLR_LENGTH_MASK_HI | XEL_TPLR_LENGTH_MASK_LO))); + Register = in_be32 (BaseAddress + XEL_TSR_OFFSET); + Register |= XEL_TSR_XMIT_BUSY_MASK; + if ((Register & XEL_TSR_XMIT_IE_MASK) != 0) { + Register |= XEL_TSR_XMIT_ACTIVE_MASK; + } + out_be32 (BaseAddress + XEL_TSR_OFFSET, Register); + return 1; + } +#endif + puts ("Error while sending frame\n"); + return 0; +} + +int eth_rx (void) +{ + unsigned int Length; + unsigned int Register; + unsigned int BaseAddress; + + BaseAddress = EmacLite.BaseAddress + EmacLite.NextRxBufferToUse; + Register = in_be32 (BaseAddress + XEL_RSR_OFFSET); +#ifdef DEBUG + printf ("Testing data at address 0x%x\n", BaseAddress); +#endif + if ((Register & XEL_RSR_RECV_DONE_MASK) == XEL_RSR_RECV_DONE_MASK) { +#ifdef XILINX_EMACLITE_RX_PING_PONG + EmacLite.NextRxBufferToUse ^= XEL_BUFFER_OFFSET; +#endif + } else { +#ifndef XILINX_EMACLITE_RX_PING_PONG +#ifdef DEBUG + printf ("No data was available - address 0x%x\n", BaseAddress); +#endif + return 0; +#else + BaseAddress ^= XEL_BUFFER_OFFSET; + Register = in_be32 (BaseAddress + XEL_RSR_OFFSET); + if ((Register & XEL_RSR_RECV_DONE_MASK) != + XEL_RSR_RECV_DONE_MASK) { +#ifdef DEBUG + printf ("No data was available - address 0x%x\n", + BaseAddress); +#endif + return 0; + } +#endif + } + /* Get the length of the frame that arrived */ + switch(((in_be32(BaseAddress + XEL_RXBUFF_OFFSET + 0xC)) & + 0xFFFF0000 ) >> 16) { + case 0x806: + Length = 42 + 20; /* FIXME size of ARP */ +#ifdef DEBUG + puts ("ARP Packet\n"); +#endif + break; + case 0x800: + Length = 14 + 14 + + (((in_be32(BaseAddress + XEL_RXBUFF_OFFSET + 0x10)) & + 0xFFFF0000) >> 16); /* FIXME size of IP packet */ +#ifdef DEBUG + puts("IP Packet\n"); +#endif + break; + default: +#ifdef DEBUG + puts("Other Packet\n"); +#endif + Length = ENET_MAX_MTU; + break; + } + + XEmacLite_AlignedRead ((BaseAddress + XEL_RXBUFF_OFFSET), + etherrxbuff, Length); + + /* Acknowledge the frame */ + Register = in_be32 (BaseAddress + XEL_RSR_OFFSET); + Register &= ~XEL_RSR_RECV_DONE_MASK; + out_be32 (BaseAddress + XEL_RSR_OFFSET, Register); + +#ifdef DEBUG + printf ("Packet receive from 0x%x, length %dB\n", BaseAddress, Length); +#endif + NetReceive ((uchar *) etherrxbuff, Length); + return 1; + +} +#endif diff --git a/fs/romfs/Makefile b/fs/romfs/Makefile index e69de29..937d755 100644 --- a/fs/romfs/Makefile +++ b/fs/romfs/Makefile @@ -0,0 +1,49 @@ +# +# (C) Copyright 2000-2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +include $(TOPDIR)/config.mk + +LIB = $(obj)libromfs.a + +AOBJS = +COBJS = romfs.o + +SRCS := $(AOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(AOBJS) $(COBJS)) + +#CPPFLAGS += + +all: $(LIB) $(AOBJS) + +$(LIB): $(obj).depend $(OBJS) + $(AR) $(ARFLAGS) $@ $(OBJS) + + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +#########################################################################