ppc: Move cpu/$CPU to arch/ppc/cpu/$CPU

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>

1 files changed, 387 insertions, 0 deletions

diff --git a/arch/ppc/cpu/mpc8260/ether_scc.c b/arch/ppc/cpu/mpc8260/ether_scc.c
new file mode 100644
index 0000000..432111d
--- /dev/null
+++ b/arch/ppc/cpu/mpc8260/ether_scc.c
@@ -0,0 +1,387 @@
+/*
+ * MPC8260 SCC Ethernet
+ *
+ * Copyright (c) 2000 MontaVista Software, Inc.   Dan Malek (dmalek@jlc.net)
+ *
+ * (C) Copyright 2000 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright (c) 2001
+ * Advent Networks, Inc. <http://www.adventnetworks.com>
+ * Jay Monkman <jtm@smoothsmoothie.com>
+ *
+ * Modified so that it plays nicely when more than one ETHERNET interface
+ * is in use a la ether_fcc.c.
+ * (C) Copyright 2008
+ * DENX Software Engineerin GmbH
+ * Gary Jennejohn <garyj@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 <common.h>
+#include <asm/cpm_8260.h>
+#include <mpc8260.h>
+#include <malloc.h>
+#include <net.h>
+#include <command.h>
+#include <config.h>
+
+#ifndef CONFIG_NET_MULTI
+#error "CONFIG_NET_MULTI must be defined."
+#endif
+
+#if (CONFIG_ETHER_INDEX == 1)
+#  define PROFF_ENET            PROFF_SCC1
+#  define CPM_CR_ENET_PAGE      CPM_CR_SCC1_PAGE
+#  define CPM_CR_ENET_SBLOCK    CPM_CR_SCC1_SBLOCK
+#  define CMXSCR_MASK          (CMXSCR_SC1          |\
+				CMXSCR_RS1CS_MSK    |\
+				CMXSCR_TS1CS_MSK)
+
+#elif (CONFIG_ETHER_INDEX == 2)
+#  define PROFF_ENET            PROFF_SCC2
+#  define CPM_CR_ENET_PAGE      CPM_CR_SCC2_PAGE
+#  define CPM_CR_ENET_SBLOCK    CPM_CR_SCC2_SBLOCK
+#  define CMXSCR_MASK          (CMXSCR_SC2          |\
+				CMXSCR_RS2CS_MSK    |\
+				CMXSCR_TS2CS_MSK)
+
+#elif (CONFIG_ETHER_INDEX == 3)
+#  define PROFF_ENET            PROFF_SCC3
+#  define CPM_CR_ENET_PAGE      CPM_CR_SCC3_PAGE
+#  define CPM_CR_ENET_SBLOCK    CPM_CR_SCC3_SBLOCK
+#  define CMXSCR_MASK          (CMXSCR_SC3          |\
+				CMXSCR_RS3CS_MSK    |\
+				CMXSCR_TS3CS_MSK)
+#elif (CONFIG_ETHER_INDEX == 4)
+#  define PROFF_ENET            PROFF_SCC4
+#  define CPM_CR_ENET_PAGE      CPM_CR_SCC4_PAGE
+#  define CPM_CR_ENET_SBLOCK    CPM_CR_SCC4_SBLOCK
+#  define CMXSCR_MASK          (CMXSCR_SC4          |\
+				CMXSCR_RS4CS_MSK    |\
+				CMXSCR_TS4CS_MSK)
+
+#endif
+
+
+/* Ethernet Transmit and Receive Buffers */
+#define DBUF_LENGTH  1520
+
+#define TX_BUF_CNT 2
+
+#if !defined(CONFIG_SYS_SCC_TOUT_LOOP)
+  #define CONFIG_SYS_SCC_TOUT_LOOP 1000000
+#endif
+
+static char txbuf[TX_BUF_CNT][ DBUF_LENGTH ];
+
+static uint rxIdx;      /* index of the current RX buffer */
+static uint txIdx;      /* index of the current TX buffer */
+
+/*
+ * 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 rxbd[PKTBUFSRX];         /* Rx BD */
+    cbd_t txbd[TX_BUF_CNT];        /* Tx BD */
+} RTXBD;
+
+static RTXBD *rtx;
+
+
+static int sec_send(struct eth_device *dev, volatile void *packet, int length)
+{
+    int i;
+    int result = 0;
+
+    if (length <= 0) {
+	printf("scc: bad packet size: %d\n", length);
+	goto out;
+    }
+
+    for(i=0; rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY; i++) {
+	if (i >= CONFIG_SYS_SCC_TOUT_LOOP) {
+	    puts ("scc: tx buffer not ready\n");
+	    goto out;
+	}
+    }
+
+    rtx->txbd[txIdx].cbd_bufaddr = (uint)packet;
+    rtx->txbd[txIdx].cbd_datlen = length;
+    rtx->txbd[txIdx].cbd_sc |= (BD_ENET_TX_READY | BD_ENET_TX_LAST |
+				BD_ENET_TX_WRAP);
+
+    for(i=0; rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY; i++) {
+	if (i >= CONFIG_SYS_SCC_TOUT_LOOP) {
+	    puts ("scc: tx error\n");
+	    goto out;
+	}
+    }
+
+    /* return only status bits */
+    result = rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_STATS;
+
+ out:
+    return result;
+}
+
+
+static int sec_rx(struct eth_device *dev)
+{
+    int length;
+
+    for (;;)
+    {
+	if (rtx->rxbd[rxIdx].cbd_sc & BD_ENET_RX_EMPTY) {
+	    length = -1;
+	    break;     /* nothing received - leave for() loop */
+	}
+
+	length = rtx->rxbd[rxIdx].cbd_datlen;
+
+	if (rtx->rxbd[rxIdx].cbd_sc & 0x003f)
+	{
+	    printf("err: %x\n", rtx->rxbd[rxIdx].cbd_sc);
+	}
+	else
+	{
+	    /* Pass the packet up to the protocol layers. */
+	    NetReceive(NetRxPackets[rxIdx], length - 4);
+	}
+
+
+	/* Give the buffer back to the SCC. */
+	rtx->rxbd[rxIdx].cbd_datlen = 0;
+
+	/* wrap around buffer index when necessary */
+	if ((rxIdx + 1) >= PKTBUFSRX) {
+	    rtx->rxbd[PKTBUFSRX - 1].cbd_sc = (BD_ENET_RX_WRAP |
+					       BD_ENET_RX_EMPTY);
+	    rxIdx = 0;
+	}
+	else {
+	    rtx->rxbd[rxIdx].cbd_sc = BD_ENET_RX_EMPTY;
+	    rxIdx++;
+	}
+    }
+    return length;
+}
+
+/**************************************************************
+ *
+ * SCC Ethernet Initialization Routine
+ *
+ *************************************************************/
+
+static int sec_init(struct eth_device *dev, bd_t *bis)
+{
+    int i;
+    volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
+    scc_enet_t *pram_ptr;
+    uint dpaddr;
+    uchar ea[6];
+
+    rxIdx = 0;
+    txIdx = 0;
+
+    /*
+     * Assign static pointer to BD area.
+     * Avoid exhausting DPRAM, which would cause a panic.
+     */
+    if (rtx == NULL) {
+	    dpaddr = m8260_cpm_dpalloc(sizeof(RTXBD) + 2, 16);
+	    rtx = (RTXBD *)&immr->im_dprambase[dpaddr];
+    }
+
+    /* 24.21 - (1-3): ioports have been set up already */
+
+    /* 24.21 - (4,5): connect SCC's tx and rx clocks, use NMSI for SCC */
+    immr->im_cpmux.cmx_uar = 0;
+    immr->im_cpmux.cmx_scr = ( (immr->im_cpmux.cmx_scr & ~CMXSCR_MASK) |
+			       CONFIG_SYS_CMXSCR_VALUE);
+
+
+    /* 24.21 (6) write RBASE and TBASE to parameter RAM */
+    pram_ptr = (scc_enet_t *)&(immr->im_dprambase[PROFF_ENET]);
+    pram_ptr->sen_genscc.scc_rbase = (unsigned int)(&rtx->rxbd[0]);
+    pram_ptr->sen_genscc.scc_tbase = (unsigned int)(&rtx->txbd[0]);
+
+    pram_ptr->sen_genscc.scc_rfcr = 0x18;  /* Nrml Ops and Mot byte ordering */
+    pram_ptr->sen_genscc.scc_tfcr = 0x18;  /* Mot byte ordering, Nrml access */
+
+    pram_ptr->sen_genscc.scc_mrblr = DBUF_LENGTH; /* max. package len 1520 */
+
+    pram_ptr->sen_cpres  = ~(0x0);        /* Preset CRC */
+    pram_ptr->sen_cmask  = 0xdebb20e3;    /* Constant Mask for CRC */
+
+
+    /* 24.21 - (7): Write INIT RX AND TX PARAMETERS to CPCR */
+    while(immr->im_cpm.cp_cpcr & CPM_CR_FLG);
+    immr->im_cpm.cp_cpcr = mk_cr_cmd(CPM_CR_ENET_PAGE,
+				     CPM_CR_ENET_SBLOCK,
+				     0x0c,
+				     CPM_CR_INIT_TRX) | CPM_CR_FLG;
+
+    /* 24.21 - (8-18): Set up parameter RAM */
+    pram_ptr->sen_crcec  = 0x0;           /* Error Counter CRC (unused) */
+    pram_ptr->sen_alec   = 0x0;           /* Align Error Counter (unused) */
+    pram_ptr->sen_disfc  = 0x0;           /* Discard Frame Counter (unused) */
+
+    pram_ptr->sen_pads   = 0x8888;        /* Short Frame PAD Characters */
+
+    pram_ptr->sen_retlim = 15;            /* Retry Limit Threshold */
+
+    pram_ptr->sen_maxflr = 1518;  /* MAX Frame Length Register */
+    pram_ptr->sen_minflr = 64;            /* MIN Frame Length Register */
+
+    pram_ptr->sen_maxd1  = DBUF_LENGTH;   /* MAX DMA1 Length Register */
+    pram_ptr->sen_maxd2  = DBUF_LENGTH;   /* MAX DMA2 Length Register */
+
+    pram_ptr->sen_gaddr1 = 0x0;   /* Group Address Filter 1 (unused) */
+    pram_ptr->sen_gaddr2 = 0x0;   /* Group Address Filter 2 (unused) */
+    pram_ptr->sen_gaddr3 = 0x0;   /* Group Address Filter 3 (unused) */
+    pram_ptr->sen_gaddr4 = 0x0;   /* Group Address Filter 4 (unused) */
+
+    eth_getenv_enetaddr("ethaddr", ea);
+    pram_ptr->sen_paddrh = (ea[5] << 8) + ea[4];
+    pram_ptr->sen_paddrm = (ea[3] << 8) + ea[2];
+    pram_ptr->sen_paddrl = (ea[1] << 8) + ea[0];
+
+    pram_ptr->sen_pper   = 0x0;   /* Persistence (unused) */
+
+    pram_ptr->sen_iaddr1 = 0x0;   /* Individual Address Filter 1 (unused) */
+    pram_ptr->sen_iaddr2 = 0x0;   /* Individual Address Filter 2 (unused) */
+    pram_ptr->sen_iaddr3 = 0x0;   /* Individual Address Filter 3 (unused) */
+    pram_ptr->sen_iaddr4 = 0x0;   /* Individual Address Filter 4 (unused) */
+
+    pram_ptr->sen_taddrh = 0x0;   /* Tmp Address (MSB) (unused) */
+    pram_ptr->sen_taddrm = 0x0;   /* Tmp Address (unused) */
+    pram_ptr->sen_taddrl = 0x0;   /* Tmp Address (LSB) (unused) */
+
+    /* 24.21 - (19): Initialize RxBD */
+    for (i = 0; i < PKTBUFSRX; i++)
+    {
+	rtx->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
+	rtx->rxbd[i].cbd_datlen = 0;                  /* Reset */
+	rtx->rxbd[i].cbd_bufaddr = (uint)NetRxPackets[i];
+    }
+
+    rtx->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
+
+    /* 24.21 - (20): Initialize TxBD */
+    for (i = 0; i < TX_BUF_CNT; i++)
+    {
+	rtx->txbd[i].cbd_sc = (BD_ENET_TX_PAD  |
+			       BD_ENET_TX_LAST |
+			       BD_ENET_TX_TC);
+	rtx->txbd[i].cbd_datlen = 0;                  /* Reset */
+	rtx->txbd[i].cbd_bufaddr = (uint)&txbuf[i][0];
+    }
+
+    rtx->txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
+
+    /* 24.21 - (21): Write 0xffff to SCCE */
+    immr->im_scc[CONFIG_ETHER_INDEX-1].scc_scce = ~(0x0);
+
+    /* 24.21 - (22): Write to SCCM to enable TXE, RXF, TXB events */
+    immr->im_scc[CONFIG_ETHER_INDEX-1].scc_sccm = (SCCE_ENET_TXE |
+						   SCCE_ENET_RXF |
+						   SCCE_ENET_TXB);
+
+    /* 24.21 - (23): we don't use ethernet interrupts */
+
+    /* 24.21 - (24): Clear GSMR_H to enable normal operations */
+    immr->im_scc[CONFIG_ETHER_INDEX-1].scc_gsmrh = 0;
+
+    /* 24.21 - (25): Clear GSMR_L to enable normal operations */
+    immr->im_scc[CONFIG_ETHER_INDEX-1].scc_gsmrl = (SCC_GSMRL_TCI        |
+						    SCC_GSMRL_TPL_48     |
+						    SCC_GSMRL_TPP_10     |
+						    SCC_GSMRL_MODE_ENET);
+
+    /* 24.21 - (26): Initialize DSR */
+    immr->im_scc[CONFIG_ETHER_INDEX-1].scc_dsr = 0xd555;
+
+    /* 24.21 - (27): Initialize PSMR2
+     *
+     * Settings:
+     *	CRC = 32-Bit CCITT
+     *	NIB = Begin searching for SFD 22 bits after RENA
+     *	FDE = Full Duplex Enable
+     *	BRO = Reject broadcast packets
+     *	PROMISCOUS = Catch all packets regardless of dest. MAC adress
+     */
+    immr->im_scc[CONFIG_ETHER_INDEX-1].scc_psmr   =	SCC_PSMR_ENCRC	|
+							SCC_PSMR_NIB22	|
+#if defined(CONFIG_SCC_ENET_FULL_DUPLEX)
+							SCC_PSMR_FDE	|
+#endif
+#if defined(CONFIG_SCC_ENET_NO_BROADCAST)
+							SCC_PSMR_BRO	|
+#endif
+#if defined(CONFIG_SCC_ENET_PROMISCOUS)
+							SCC_PSMR_PRO	|
+#endif
+							0;
+
+    /* 24.21 - (28): Write to GSMR_L to enable SCC */
+    immr->im_scc[CONFIG_ETHER_INDEX-1].scc_gsmrl |= (SCC_GSMRL_ENR |
+						     SCC_GSMRL_ENT);
+
+    return 0;
+}
+
+
+static void sec_halt(struct eth_device *dev)
+{
+    volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
+    immr->im_scc[CONFIG_ETHER_INDEX-1].scc_gsmrl &= ~(SCC_GSMRL_ENR |
+						      SCC_GSMRL_ENT);
+}
+
+#if 0
+static void sec_restart(void)
+{
+    volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
+    immr->im_cpm.cp_scc[CONFIG_ETHER_INDEX-1].scc_gsmrl |= (SCC_GSMRL_ENR |
+							    SCC_GSMRL_ENT);
+}
+#endif
+
+int mpc82xx_scc_enet_initialize(bd_t *bis)
+{
+	struct eth_device *dev;
+
+	dev = (struct eth_device *) malloc(sizeof *dev);
+	memset(dev, 0, sizeof *dev);
+
+	sprintf(dev->name, "SCC ETHERNET");
+	dev->init   = sec_init;
+	dev->halt   = sec_halt;
+	dev->send   = sec_send;
+	dev->recv   = sec_rx;
+
+	eth_register(dev);
+
+	return 1;
+}