diff options
Diffstat (limited to 'board')
| -rw-r--r-- | board/keymile/common/common.c | 3 | ||||
| -rw-r--r-- | board/keymile/common/common.h | 4 | ||||
| -rw-r--r-- | board/keymile/common/keymile_hdlc_enet.c | 620 | ||||
| -rw-r--r-- | board/keymile/mgcoge/Makefile | 3 | ||||
| -rw-r--r-- | board/keymile/mgcoge/mgcoge_hdlc_enet.c | 276 |
5 files changed, 1 insertions, 905 deletions
diff --git a/board/keymile/common/common.c b/board/keymile/common/common.c index 4883fe5..dc96489 100644 --- a/board/keymile/common/common.c +++ b/board/keymile/common/common.c @@ -677,9 +677,6 @@ int ethernet_present(void) int board_eth_init(bd_t *bis) { -#ifdef CONFIG_KEYMILE_HDLC_ENET - (void)keymile_hdlc_enet_initialize(bis); -#endif if (ethernet_present()) return cpu_eth_init(bis); diff --git a/board/keymile/common/common.h b/board/keymile/common/common.h index 099de98..14768c9 100644 --- a/board/keymile/common/common.h +++ b/board/keymile/common/common.h @@ -46,10 +46,6 @@ struct km_bec_fpga { int ethernet_present(void); int ivm_read_eeprom(void); -#ifdef CONFIG_KEYMILE_HDLC_ENET -int keymile_hdlc_enet_initialize(bd_t *bis); -#endif - int set_km_env(void); int fdt_set_node_and_value(void *blob, char *nodename, diff --git a/board/keymile/common/keymile_hdlc_enet.c b/board/keymile/common/keymile_hdlc_enet.c deleted file mode 100644 index a545211..0000000 --- a/board/keymile/common/keymile_hdlc_enet.c +++ /dev/null @@ -1,620 +0,0 @@ -/* - * (C) Copyright 2008 - * Gary Jennejohn, DENX Software Engineering GmbH, garyj@denx.de. - * - * Based in part on arch/powerpc/cpu/mpc8260/ether_scc.c. - * - * 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 <malloc.h> -#include <net.h> - -#ifdef CONFIG_KEYMILE_HDLC_ENET -#ifdef TEST_IT -#include <command.h> -#endif - -#include "keymile_hdlc_enet.h" - -extern char keymile_slot; /* our slot number in the backplane */ - -/* Allow up to about 50 ms for sending */ -#define TOUT_LOOP 50000 - -/* - * Since, except during initialization, ethact is always HDLC - * while we're in the driver, just use serial_printf() everywhere for - * output. This avoids possible conflicts when netconsole is being - * used. - */ -#define dprintf(fmt, args...) serial_printf(fmt, ##args) - -/* Cannot use the storage from net.c because we allocate larger buffers */ -static volatile uchar MyPktBuf[HDLC_PKTBUFSRX * PKT_MAXBLR_SIZE + PKTALIGN]; -static volatile uchar *MyRxPackets[HDLC_PKTBUFSRX]; /* Receive packet */ - -static unsigned int keymile_rxIdx; /* index of the current RX buffer */ - -static IPaddr_t cachedNumbers[CACHEDNUMBERS]; /* 4 bytes per entry */ -void initCachedNumbers(int); - -/* - * SCC Ethernet Tx and Rx buffer descriptors allocated at the - * immr->udata_bd address on Dual-Port RAM - * Provide for Double Buffering - */ -typedef volatile struct CommonBufferDescriptor { - cbd_t txbd; /* Tx BD */ - cbd_t rxbd[HDLC_PKTBUFSRX]; /* Rx BD */ -} RTXBD; - -/* - * This must be extern because it is allocated in DPRAM using CPM-sepcific - * code. - */ -static RTXBD *rtx; - -static int keymile_hdlc_enet_send(struct eth_device *, volatile void *, int); -static int keymile_hdlc_enet_recv(struct eth_device *); -void keymile_hdlc_enet_init_bds(RTXBD *); -extern int keymile_hdlc_enet_init(struct eth_device *, bd_t *); -extern void keymile_hdlc_enet_halt(struct eth_device *); - -/* flags in the buffer descriptor not defined anywhere else */ -#define BD_SC_CT BD_SC_CD -#define BD_SC_CR 0x04 -#define BD_SC_DE 0x80 -#ifndef BD_SC_TC -#define BD_SC_TC ((ushort)0x0400) /* Transmit CRC */ -#endif -#define BD_SC_FIRST BD_SC_TC -#define BD_SC_STATS (BD_SC_BR | BD_SC_FR | BD_SC_PR | BD_SC_CR | BD_SC_CD \ - | BD_SC_OV | BD_SC_DE) - -#if defined(TEST_RX) || defined(TEST_TX) || defined(TEST_IT) -static void hexdump(unsigned char *buf, int len) -{ - int i; - const int bytesPerLine = 32; - - if (len > 4 * bytesPerLine) - len = 4 * bytesPerLine; - dprintf("\t address: %08x\n", (unsigned int)buf); - for (i = 0; i < len; i++) { - if (i % bytesPerLine == 0) - dprintf("%04x: ", (unsigned short)i); - dprintf("%02x ", buf[i]); - if ((i + 1) % bytesPerLine == 0) { - dprintf("\n"); - continue; - } - if ((i + 1) % 8 == 0) - printf(" "); - } - if (len % bytesPerLine) - dprintf("\n"); -} -#endif - -int keymile_hdlc_enet_initialize(bd_t *bis) -{ - struct eth_device *dev; - - dev = (struct eth_device *) malloc(sizeof *dev); - memset(dev, 0, sizeof *dev); -#ifdef TEST_IT - seth = dev; -#endif - - sprintf(dev->name, "HDLC"); - dev->init = keymile_hdlc_enet_init; - dev->halt = keymile_hdlc_enet_halt; - dev->send = keymile_hdlc_enet_send; - dev->recv = keymile_hdlc_enet_recv; - - eth_register(dev); - - return 1; -} - -/* - * This is called from the board-specific driver after rtx is allocated. - */ -void keymile_hdlc_enet_init_bds(RTXBD *board_rtx) -{ - volatile cbd_t *bdp; - int i; - - rtx = board_rtx; - keymile_rxIdx = 0; - /* - * Initialize the buffer descriptors. - */ - bdp = &rtx->txbd; - bdp->cbd_sc = 0; - bdp->cbd_bufaddr = 0; - bdp->cbd_sc = BD_SC_WRAP; - - /* - * Setup RX packet buffers, aligned correctly. - * Borrowed from net/net.c. - */ - MyRxPackets[0] = &MyPktBuf[0] + (PKTALIGN - 1); - MyRxPackets[0] -= (ulong)MyRxPackets[0] % PKTALIGN; - for (i = 1; i < HDLC_PKTBUFSRX; i++) - MyRxPackets[i] = MyRxPackets[0] + i * PKT_MAXBLR_SIZE; - - bdp = &rtx->rxbd[0]; - for (i = 0; i < HDLC_PKTBUFSRX; i++) { - bdp->cbd_sc = BD_SC_EMPTY; - /* Leave space at the start for INET header. */ - bdp->cbd_bufaddr = (unsigned int)(MyRxPackets[i] + - INET_HDR_ALIGN); - bdp++; - } - bdp--; - bdp->cbd_sc |= BD_SC_WRAP; -} - -/* - * This returns the current port number for NETCONSOLE. If nc_port - * in netconsole.c weren't declared static we wouldn't need this. - */ -static short get_netcons_port(void) -{ - char *p; - short nc_port; - - nc_port = 6666; /* default */ - - p = getenv("ncip"); - if (p != NULL) { - p = strchr(p, ':'); - if (p != NULL) - nc_port = simple_strtoul(p + 1, NULL, 10); - } - - return htons(nc_port); -} - -/* - * Read the port numbers from the variables - */ -void initCachedNumbers(int verbose) -{ - char *str; - ushort port; - - /* already in network order */ - cachedNumbers[IP_ADDR] = getenv_IPaddr("ipaddr"); - /* already in network order */ - cachedNumbers[IP_SERVER] = getenv_IPaddr("serverip"); - str = getenv("tftpsrcp"); - if (str != NULL) { - /* avoid doing htons() again and again */ - port = htons((ushort)simple_strtol(str, NULL, 10)); - cachedNumbers[TFTP_SRC_PORT] = port; - } else - /* this can never be a valid port number */ - cachedNumbers[TFTP_SRC_PORT] = (ulong)-1; - str = getenv("tftpdstp"); - if (str != NULL) { - /* avoid doing htons() again and again */ - port = htons((ushort)simple_strtol(str, NULL, 10)); - cachedNumbers[TFTP_DST_PORT] = port; - } else - /* this is the default value */ - cachedNumbers[TFTP_DST_PORT] = htons(WELL_KNOWN_PORT); - /* already in network order */ - cachedNumbers[NETCONS_PORT] = get_netcons_port(); - if (verbose) { - dprintf("\nIP Number Initialization:\n"); - dprintf(" ip address %08lx\n", cachedNumbers[IP_ADDR]); - dprintf(" server ip address %08lx\n", - cachedNumbers[IP_SERVER]); - dprintf(" tftp client port %ld\n", - cachedNumbers[TFTP_SRC_PORT]); - dprintf(" tftp server port %ld\n", - cachedNumbers[TFTP_DST_PORT]); - dprintf(" netcons port %ld\n", - cachedNumbers[NETCONS_PORT]); - dprintf(" slot number (hex) %02x\n", keymile_slot); - } -} - -static void keymile_hdlc_enet_doarp(volatile void *packet, int len) -{ - ARP_t *arp; - IPaddr_t src_ip; /* U-Boot's IP */ - IPaddr_t dest_ip; /* the mgcoge's IP */ - unsigned char *packet_copy = malloc(len); - - /* - * Handling an ARP request means that a new transfer has started. - * Update our cached parameters now. - */ - initCachedNumbers(0); /* may reinit port numbers */ - - /* special handling required for ARP */ - arp = (ARP_t *)(packet + ETHER_HDR_SIZE); - /* - * XXXX - * This is pretty dirty! NetReceive only uses - * a few fields when handling an ARP reply, so - * we only modify those here. This could - * result in catastrophic failure at a later - * time if the handler is modified! - */ - arp->ar_op = htons(ARPOP_REPLY); - /* save his/our IP */ - src_ip = NetReadIP(&arp->ar_data[6]); - dest_ip = NetReadIP(&arp->ar_data[16]); - /* copy target IP to source IP */ - NetCopyIP(&arp->ar_data[6], &dest_ip); - /* copy our IP to the right place */ - NetCopyIP(&arp->ar_data[16], &src_ip); - /* always use 0x7f as the MAC for the coge */ - arp->ar_data[0] = HDLC_UACUA; - /* - * copy the packet - * if NetReceive wants to write to stdout, it may overwrite packet - * especially if stdout is set to nc! - * - * However, if the malloc() above fails then we can still try the - * original packet, rather than causing the transfer to fail. - */ - if (packet_copy != NULL) { - memcpy(packet_copy, (char *)packet, len); - NetReceive(packet_copy, len); - free(packet_copy); - } else - NetReceive(packet, len); -} - -/* - * NOTE all callers ignore the returned value! - * At the moment this only handles ARP Requests, TFTP and NETCONSOLE. - */ -static int keymile_hdlc_enet_send(struct eth_device *dev, volatile void *packet, - int len) -{ - int j; - uint data_addr; - int data_len; - struct icn_hdr header; - struct icn_frame *frame; - Ethernet_t *et; - ARP_t *arp; - IP_t *ip; - - if (len > (MAX_FRAME_LENGTH - sizeof(header))) - return -1; - - frame = NULL; - et = NULL; - arp = NULL; - ip = NULL; - - j = 0; - while ((rtx->txbd.cbd_sc & BD_SC_READY) && (j < TOUT_LOOP)) { - /* will also trigger Wd if needed, but maybe too often */ - udelay(1); - j++; - } - if (j >= TOUT_LOOP) { - dprintf("TX not ready sc %x\n", rtx->txbd.cbd_sc); - return -1; - } - - /* - * First check for an ARP Request since this requires special handling. - */ - if (len >= (ARP_HDR_SIZE + ETHER_HDR_SIZE)) { - et = (Ethernet_t *)packet; - arp = (ARP_t *)(((char *)et) + ETHER_HDR_SIZE); - /* ARP and REQUEST? */ - if (et->et_protlen == PROT_ARP && - arp->ar_op == htons(ARPOP_REQUEST)) { - /* just short-circuit the request on the U-Boot side */ - keymile_hdlc_enet_doarp(packet, len); - return 0; - } - } - - /* - * GJ - I suppose the assumption here that len will always be - * > INET_HDR_SIZE is alright as long as the network stack - * isn't changed. - * Do not send INET header. - */ - data_len = len + sizeof(header) - INET_HDR_SIZE; - frame = (struct icn_frame *) (((char *)packet) + INET_HDR_SIZE - - sizeof(header)); - -#ifdef TEST_TX - printf("frame: %08x, ", frame); - hexdump((unsigned char *)packet, data_len + INET_HDR_SIZE); -#endif - - data_addr = (uint)frame; - if (len >= (IP_HDR_SIZE + ETHER_HDR_SIZE)) - ip = (IP_t *)(packet + ETHER_HDR_SIZE); - /* Is it TFTP? TFTP always uses UDP and the cached dport */ - if (ip != NULL && ip->ip_p == IPPROTO_UDP && ip->udp_dst == - (ushort)cachedNumbers[TFTP_DST_PORT]) { - /* just in case the port wasn't set in the environment */ - if (cachedNumbers[TFTP_SRC_PORT] == (ulong)-1) - cachedNumbers[TFTP_SRC_PORT] = ip->udp_src; - frame->hdr.application = MGS_TFTP; - } - /* - * Is it NETCONSOLE? NETCONSOLE always uses UDP. - */ - else if (ip != NULL && ip->ip_p == IPPROTO_UDP - && ip->udp_dst == (ushort)cachedNumbers[NETCONS_PORT]) { - frame->hdr.application = MGS_NETCONS; - } else { - /* reject unknown packets */ - /* may do some check on frame->hdr.application */ - dprintf("Unknown packet type in %s, rejected\n", - __func__); - return -1; - } - /* - * Could extract the target's slot ID from its MAC here, - * but u-boot only wants to talk to the active server. - * - * avoid setting new source address when moving to another slot - */ - frame->hdr.src_addr = keymile_slot; - frame->hdr.dest_addr = HDLC_UACUA; -#ifdef TEST_TX - { - dprintf("TX: "); - hexdump((unsigned char *)data_addr, data_len); - } -#endif - - flush_cache(data_addr, data_len); - rtx->txbd.cbd_bufaddr = data_addr; - rtx->txbd.cbd_datlen = data_len; - rtx->txbd.cbd_sc |= (BD_SC_READY | BD_SC_TC | BD_SC_LAST | BD_SC_WRAP); - - while ((rtx->txbd.cbd_sc & BD_SC_READY) && (j < TOUT_LOOP)) { - /* will also trigger Wd if needed, but maybe too often */ - udelay(1); - j++; - } - if (j >= TOUT_LOOP) - dprintf("TX timeout\n"); -#ifdef ET_DEBUG - dprintf("cycles: %d status: %x\n", j, rtx->txbd.cbd_sc); -#endif - j = (rtx->txbd.cbd_sc & BD_SC_STATS); /* return only status bits */ - return j; -} - -/* - * During a receive, the RxIdx points to the current incoming buffer. - * When we update through the ring, if the next incoming buffer has - * not been given to the system, we just set the empty indicator, - * effectively tossing the packet. - */ -static int keymile_hdlc_enet_recv(struct eth_device *dev) -{ - int length; - unsigned char app; - struct icn_frame *fp; - Ethernet_t *ep; - IP_t *ip; - - for (;;) { - if (rtx->rxbd[keymile_rxIdx].cbd_sc & BD_SC_EMPTY) { - length = -1; - break; /* nothing received - leave for() loop */ - } - - length = rtx->rxbd[keymile_rxIdx].cbd_datlen; -#ifdef TEST_RX - dprintf("packet %d bytes long\n", length); -#endif - - /* - * BD_SC_BR -> LG bit - * BD_SC_FR -> NO bit - * BD_SC_PR -> AB bit - * BD_SC_NAK -> CR bit - * 0x80 -> DE bit - */ - if (rtx->rxbd[keymile_rxIdx].cbd_sc & BD_SC_STATS) { -#ifdef ET_DEBUG - dprintf("err: %x\n", rtx->rxbd[keymile_rxIdx].cbd_sc); -#endif - } else if (length > MAX_FRAME_LENGTH) { /* can't happen */ -#ifdef ET_DEBUG - dprintf("err: packet too big\n"); -#endif - } else { - fp = (struct icn_frame *)(MyRxPackets[keymile_rxIdx] + - INET_HDR_ALIGN - INET_HDR_SIZE); -#ifdef TEST_RX - dprintf("RX %d: ", keymile_rxIdx); - hexdump((unsigned char *)MyRxPackets[keymile_rxIdx], - INET_HDR_ALIGN + INET_HDR_SIZE + 4); -#endif - /* copy icn header to the beginning */ - memcpy(fp, ((char *)fp + INET_HDR_SIZE), - sizeof(struct icn_hdr)); - app = fp->hdr.application; - if (app == MGS_NETCONS || app == MGS_TFTP) { - struct icn_hdr *ih = &fp->hdr; - unsigned char icn_src_addr = ih->src_addr; - unsigned char icn_dest_addr = ih->dest_addr; - - /* - * expand header by INET_HDR_SIZE - */ - length += INET_HDR_SIZE; - /* initalize header */ - memset((char *)fp->data, 0x00, INET_HDR_SIZE); - ep = (Ethernet_t *)fp->data; - /* set MACs */ - ep->et_dest[0] = icn_dest_addr; - ep->et_src[0] = icn_src_addr; - ep->et_protlen = htons(PROT_IP); - /* set ip stuff */ - ip = (IP_t *)(fp->data + ETHER_HDR_SIZE); - /* set ip addresses */ - ip->ip_src = cachedNumbers[IP_SERVER]; - ip->ip_dst = cachedNumbers[IP_ADDR]; - /* ip length */ - ip->ip_len = htons(length - ETHER_HDR_SIZE - - REMOVE); - /* ip proto */ - ip->ip_p = IPPROTO_UDP; - switch (app) { - case MGS_TFTP: - /* swap src/dst port numbers */ - ip->udp_src = (ushort) - cachedNumbers[TFTP_DST_PORT]; - ip->udp_dst = (ushort) - cachedNumbers[TFTP_SRC_PORT]; - ip->udp_len = ip->ip_len - - IP_HDR_SIZE_NO_UDP; - ip->udp_xsum = 0; - break; - case MGS_NETCONS: - ip->udp_src = (ushort) - cachedNumbers[NETCONS_PORT]; - /* - * in drivers/net/netconsole.c src port - * equals dest port - */ - ip->udp_dst = ip->udp_src; - ip->udp_len = ip->ip_len - - IP_HDR_SIZE_NO_UDP; - ip->udp_xsum = 0; - break; - } - /* ip version */ - ip->ip_hl_v = (0x40) | (0x0f & - (IP_HDR_SIZE_NO_UDP / 4)); - ip->ip_tos = 0; - ip->ip_id = 0; - /* flags, fragment offset */ - ip->ip_off = htons(0x4000); - ip->ip_ttl = 255; /* time to live */ - /* have to fixup the checksum */ - ip->ip_sum = ~NetCksum((uchar *)ip, - IP_HDR_SIZE_NO_UDP / 2); - /* - * Pass the packet up to the protocol layers - * but remove dest_addr, src_addr, application - * and the CRC. - */ -#ifdef TEST_RX - hexdump((unsigned char *)fp->data, - INET_HDR_SIZE + 4); -#endif - NetReceive(fp->data, length - REMOVE); - } else { - /* - * the other application types are not yet - * supported by u-boot. - */ - /* normally drop it */ -#ifdef TEST_NO - /* send it anyway */ - fp = (struct icn_frame *) - (MyRxPackets[keymile_rxIdx] + - INET_HDR_ALIGN); - NetReceive(fp->data, length - REMOVE); -#endif - } - } - - /* Give the buffer back to the SCC. */ - rtx->rxbd[keymile_rxIdx].cbd_datlen = 0; - - /* wrap around buffer index when necessary */ - if ((keymile_rxIdx + 1) >= HDLC_PKTBUFSRX) { - rtx->rxbd[HDLC_PKTBUFSRX - 1].cbd_sc = - (BD_SC_WRAP | BD_SC_EMPTY); - keymile_rxIdx = 0; - } else { - rtx->rxbd[keymile_rxIdx].cbd_sc = BD_SC_EMPTY; - keymile_rxIdx++; - } - } - return length; -} - -#ifdef TEST_IT -/* simple send test routine */ -int hdlc_enet_stest(struct cmd_tbl_s *a, int b, int c, char **d) -{ - unsigned char pkt[2]; - int ret; - - dprintf("enter stest\n"); - /* may have to initialize things */ - if (seth->state != ETH_STATE_ACTIVE) { - /* the bd_t* is not used */ - if (seth->init(seth, NULL) >= 0) - seth->state = ETH_STATE_ACTIVE; - } - pkt[0] = 0xea; - pkt[1] = 0xae; - ret = keymile_hdlc_enet_send(seth, pkt, 2); - dprintf("return from send %x\n", ret); - dprintf("exit stest\n"); - return ret; -} -U_BOOT_CMD( - stest, 1, 1, hdlc_enet_stest, - "simple send test for hdlc_enet", - "" -); -/* simple receive test routine */ -int hdlc_enet_rtest(struct cmd_tbl_s *a, int b, int c, char **d) -{ - int ret; - - dprintf("enter rtest\n"); - /* may have to initialize things */ - if (seth->state != ETH_STATE_ACTIVE) { - /* the bd_t* is not used */ - if (seth->init(seth, NULL) >= 0) - seth->state = ETH_STATE_ACTIVE; - } - ret = keymile_hdlc_enet_recv(seth); - dprintf("return from recv %x\n", ret); - dprintf("exit rtest\n"); - return ret; -} -U_BOOT_CMD( - rtest, 1, 1, hdlc_enet_rtest, - "simple receive test for hdlc_enet", - "" -); -#endif - -#endif /* CONFIG_KEYMILE_HDLC_ENET */ diff --git a/board/keymile/mgcoge/Makefile b/board/keymile/mgcoge/Makefile index 3308621..a2b9da4 100644 --- a/board/keymile/mgcoge/Makefile +++ b/board/keymile/mgcoge/Makefile @@ -28,8 +28,7 @@ endif LIB = $(obj)lib$(BOARD).o -COBJS := $(BOARD).o ../common/common.o ../common/keymile_hdlc_enet.o \ - mgcoge_hdlc_enet.o +COBJS := $(BOARD).o ../common/common.o SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) OBJS := $(addprefix $(obj),$(COBJS)) diff --git a/board/keymile/mgcoge/mgcoge_hdlc_enet.c b/board/keymile/mgcoge/mgcoge_hdlc_enet.c deleted file mode 100644 index 98f68a6..0000000 --- a/board/keymile/mgcoge/mgcoge_hdlc_enet.c +++ /dev/null @@ -1,276 +0,0 @@ -/* - * (C) Copyright 2008 - * Gary Jennejohn, DENX Software Engineering GmbH, garyj@denx.de. - * - * Based in part on arch/powerpc/cpu/mpc8260/ether_scc.c. - * - * 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 <malloc.h> -#include <net.h> - -#ifdef CONFIG_KEYMILE_HDLC_ENET - -#include "../common/keymile_hdlc_enet.h" - -char keymile_slot; /* our slot number in the backplane */ - -/* - * Since, except during initialization, ethact is always HDLC ETHERNET - * while we're in the driver, just use serial_printf() everywhere for - * output. This avoids possible conflicts when netconsole is being - * used. - */ -#define dprintf(fmt, args...) serial_printf(fmt, ##args) - -static int already_inited; - -/* - * SCC Ethernet Tx and Rx buffer descriptors allocated at the - * immr->udata_bd address on Dual-Port RAM - * Provide for Double Buffering - */ -typedef volatile struct CommonBufferDescriptor { - cbd_t txbd; /* Tx BD */ - cbd_t rxbd[HDLC_PKTBUFSRX]; /* Rx BD */ -} RTXBD; - -static RTXBD *rtx; - -int keymile_hdlc_enet_init(struct eth_device *, bd_t *); -void keymile_hdlc_enet_halt(struct eth_device *); -extern void keymile_hdlc_enet_init_bds(RTXBD *); -extern void initCachedNumbers(int); - -/* Use SCC1 */ -#define CPM_CR_SCC_PAGE CPM_CR_SCC1_PAGE -#define CPM_CR_SCC_SBLOCK CPM_CR_SCC1_SBLOCK -#define CMXSCR_MASK (CMXSCR_GR1|CMXSCR_SC1|\ - CMXSCR_RS1CS_MSK|CMXSCR_TS1CS_MSK) -#define CMXSCR_VALUE (CMXSCR_RS1CS_CLK11|CMXSCR_TS1CS_CLK11) -#define MGC_PROFF_HDLC PROFF_SCC1 -#define MGC_SCC_HDLC 0 /* Index, not number! */ - -int keymile_hdlc_enet_init(struct eth_device *dev, bd_t *bis) -{ - /* int i; */ - uint dpr; - /* volatile cbd_t *bdp; */ - volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR; - volatile cpm8260_t *cp = &(im->im_cpm); - volatile scc_t *sccp; - volatile scc_hdlc_t *hpr; - volatile iop8260_t *iop; - - if (already_inited) - return 0; - - hpr = (scc_hdlc_t *)(&im->im_dprambase[MGC_PROFF_HDLC]); - sccp = (scc_t *)(&im->im_scc[MGC_SCC_HDLC]); - iop = &im->im_ioport; - - /* - * Disable receive and transmit just in case. - */ - sccp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT); - - /* - * Avoid exhausting DPRAM, which would cause a panic. - */ - if (rtx == NULL) { - /* dpr is an offset into dpram */ - dpr = m8260_cpm_dpalloc(sizeof(RTXBD), 8); - rtx = (RTXBD *)&im->im_dprambase[dpr]; - } - - /* We need the slot number for addressing. */ - keymile_slot = *(char *)(CONFIG_SYS_SLOT_ID_BASE + - CONFIG_SYS_SLOT_ID_OFF) & CONFIG_SYS_SLOT_ID_MASK; - /* - * Be consistent with the Linux driver and set - * only enetaddr[0]. - * - * Always add 1 to the slot number so that - * there are no problems with an ethaddr which - * is all 0s. This should be acceptable because - * a board should never have a slot number of 255, - * which is the broadcast address. The HDLC addressing - * uses only the slot number. - */ - dev->enetaddr[0] = keymile_slot + 1; -#ifdef TEST_IT - dprintf("slot %d\n", keymile_slot); -#endif - - /* use pd30, pd31 pins for TXD1, RXD1 respectively */ - iop->iop_ppard |= (0x80000000 >> 30) | (0x80000000 >> 31); - iop->iop_pdird |= (0x80000000 >> 30); - iop->iop_psord |= (0x80000000 >> 30); - - /* use pc21 as CLK11 */ - iop->iop_pparc |= (0x80000000 >> 21); - iop->iop_pdirc &= ~(0x80000000 >> 21); - iop->iop_psorc &= ~(0x80000000 >> 21); - - /* use pc15 as CTS1 */ - iop->iop_pparc |= (0x80000000 >> 15); - iop->iop_pdirc &= ~(0x80000000 >> 15); - iop->iop_psorc &= ~(0x80000000 >> 15); - - /* - * SI clock routing - * use CLK11 - * this also connects SCC1 to NMSI - */ - im->im_cpmux.cmx_scr = (im->im_cpmux.cmx_scr & ~CMXSCR_MASK) | - CMXSCR_VALUE; - - /* keymile_rxIdx = 0; */ - - /* - * Initialize function code registers for big-endian. - */ - hpr->sh_genscc.scc_rfcr = CPMFCR_EB; - hpr->sh_genscc.scc_tfcr = CPMFCR_EB; - - /* - * Set maximum bytes per receive buffer. - */ - hpr->sh_genscc.scc_mrblr = MAX_FRAME_LENGTH; - - /* Setup CRC generator values for HDLC */ - hpr->sh_cmask = 0x0000F0B8; - hpr->sh_cpres = 0x0000FFFF; - - /* Initialize all error counters to 0 */ - hpr->sh_disfc = 0; - hpr->sh_crcec = 0; - hpr->sh_abtsc = 0; - hpr->sh_nmarc = 0; - hpr->sh_retrc = 0; - - /* Set maximum frame length size */ - hpr->sh_mflr = MAX_FRAME_LENGTH; - - /* set to 1 for per frame processing change later if needed */ - hpr->sh_rfthr = 1; - - hpr->sh_hmask = 0xff; - - hpr->sh_haddr2 = SET_HDLC_UUA(keymile_slot); - hpr->sh_haddr3 = hpr->sh_haddr2; - hpr->sh_haddr4 = hpr->sh_haddr2; - /* broadcast */ - hpr->sh_haddr1 = HDLC_BCAST; - - hpr->sh_genscc.scc_rbase = (unsigned int) &rtx->rxbd[0]; - hpr->sh_genscc.scc_tbase = (unsigned int) &rtx->txbd; - -#if 0 - /* - * Initialize the buffer descriptors. - */ - bdp = &rtx->txbd; - bdp->cbd_sc = 0; - bdp->cbd_bufaddr = 0; - bdp->cbd_sc = BD_SC_WRAP; - - /* - * Setup RX packet buffers, aligned correctly. - * Borrowed from net/net.c. - */ - MyRxPackets[0] = &MyPktBuf[0] + (PKTALIGN - 1); - MyRxPackets[0] -= (ulong)MyRxPackets[0] % PKTALIGN; - for (i = 1; i < HDLC_PKTBUFSRX; i++) - MyRxPackets[i] = MyRxPackets[0] + i * PKT_MAXBLR_SIZE; - - bdp = &rtx->rxbd[0]; - for (i = 0; i < HDLC_PKTBUFSRX; i++) { - bdp->cbd_sc = BD_SC_EMPTY; - /* Leave space at the start for INET header. */ - bdp->cbd_bufaddr = (unsigned int)(MyRxPackets[i] + - INET_HDR_ALIGN); - bdp++; - } - bdp--; - bdp->cbd_sc |= BD_SC_WRAP; -#else - keymile_hdlc_enet_init_bds(rtx); -#endif - - /* Let's re-initialize the channel now. We have to do it later - * than the manual describes because we have just now finished - * the BD initialization. - */ - cp->cp_cpcr = mk_cr_cmd(CPM_CR_SCC_PAGE, CPM_CR_SCC_SBLOCK, - 0, CPM_CR_INIT_TRX) | CPM_CR_FLG; - while (cp->cp_cpcr & CPM_CR_FLG); - - sccp->scc_gsmrl = SCC_GSMRL_MODE_HDLC; - /* CTSS=1 */ - sccp->scc_gsmrh = SCC_GSMRH_CTSS; - /* NOF=0, RTE=1, DRT=0, BUS=1 */ - sccp->scc_psmr = ((0x8000 >> 6) | (0x8000 >> 10)); - -/* loopback for local testing */ -#ifdef GJTEST - dprintf("LOOPBACK!\n"); - sccp->scc_gsmrl |= SCC_GSMRL_DIAG_LOOP; -#endif - - /* - * Disable all interrupts and clear all pending - * events. - */ - sccp->scc_sccm = 0; - sccp->scc_scce = 0xffff; - - /* - * And last, enable the transmit and receive processing. - */ - sccp->scc_gsmrl |= (SCC_GSMRL_ENR | SCC_GSMRL_ENT); - - dprintf("%s: HDLC ENET Version 0.3 on SCC%d\n", dev->name, - MGC_SCC_HDLC + 1); - - /* - * We may not get an ARP packet because ARP was already done on - * a different interface, so initialize the cached values now. - */ - initCachedNumbers(1); - - already_inited = 1; - - return 0; -} - -void keymile_hdlc_enet_halt(struct eth_device *dev) -{ -#if 0 /* just return, but keep this for reference */ - volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR; - - /* maybe should do a graceful stop here? */ - immr->im_scc[MGC_SCC_HDLC].scc_gsmrl &= - ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT); -#endif -} - -#endif /* CONFIG_MGCOGE_HDLC_ENET */ |