diff options
Diffstat (limited to 'board/keymile/km8xx/km8xx_hdlc_enet.c')
| -rw-r--r-- | board/keymile/km8xx/km8xx_hdlc_enet.c | 278 |
1 files changed, 0 insertions, 278 deletions
diff --git a/board/keymile/km8xx/km8xx_hdlc_enet.c b/board/keymile/km8xx/km8xx_hdlc_enet.c deleted file mode 100644 index ca00576925..0000000000 --- a/board/keymile/km8xx/km8xx_hdlc_enet.c +++ /dev/null @@ -1,278 +0,0 @@ -/* - * (C) Copyright 2008 - * Gary Jennejohn, DENX Software Engineering GmbH, garyj@denx.de. - * - * Based in part on arch/powerpc/cpu/mpc8xx/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> /* commproc.h is included here */ -#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 - * 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 SCC4 */ -#define MGS_CPM_CR_HDLC CPM_CR_CH_SCC4 -#define MGS_PROFF_HDLC PROFF_SCC4 -#define MGS_SCC_HDLC 3 /* Index, not number! */ - -int keymile_hdlc_enet_init(struct eth_device *dev, bd_t *bis) -{ - /* int i; */ - /* volatile cbd_t *bdp; */ - volatile cpm8xx_t *cp; - volatile scc_t *sccp; - volatile hdlc_pram_t *hpr; - volatile iop8xx_t *iop; - - if (already_inited) - return 0; - - cp = (cpm8xx_t *)&(((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm); - hpr = (hdlc_pram_t *)(&cp->cp_dparam[MGS_PROFF_HDLC]); - sccp = (volatile scc_t *)(&cp->cp_scc[MGS_SCC_HDLC]); - iop = (iop8xx_t *)&(((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport); - - /* - * Disable receive and transmit just in case. - */ - sccp->scc_gsmrl &= ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT); - -#ifndef CONFIG_SYS_ALLOC_DPRAM -#error "CONFIG_SYS_ALLOC_DPRAM must be defined" -#else - /* - * Avoid exhausting DPRAM, which would cause a panic. - * Actually this isn't really necessary, but leave it here - * for safety's sake. - */ - if (rtx == NULL) { - rtx = (RTXBD *) (cp->cp_dpmem + - dpram_alloc_align(sizeof(RTXBD), 8)); - if (rtx == (RTXBD *)CPM_DP_NOSPACE) - return -1; - memset((void *)rtx, 0, sizeof(RTXBD)); - } -#endif /* !CONFIG_SYS_ALLOC_DPRAM */ - - /* 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 pa8, pa9 pins for TXD4, RXD4 respectively */ - iop->iop_papar |= ((0x8000 >> 8) | (0x8000 >> 9)); - iop->iop_padir &= ~((0x8000 >> 8) | (0x8000 >> 9)); - iop->iop_paodr &= ~((0x8000 >> 8) | (0x8000 >> 9)); - - /* also use pa0 as CLK8 */ - iop->iop_papar |= 0x8000; - iop->iop_padir &= ~0x8000; - iop->iop_paodr &= ~0x8000; - - /* use pc5 as CTS4 */ - iop->iop_pcpar &= ~(0x8000 >> 5); - iop->iop_pcdir &= ~(0x8000 >> 5); - iop->iop_pcso |= (0x8000 >> 5); - - /* - * SI clock routing - * use CLK8 - * this also connects SCC4 to NMSI - */ - cp->cp_sicr = (cp->cp_sicr & ~0xff000000) | 0x3f000000; - - /* keymile_rxIdx = 0; */ - - /* - * Initialize function code registers for big-endian. - */ - hpr->rfcr = SCC_EB; - hpr->tfcr = SCC_EB; - - /* - * Set maximum bytes per receive buffer. - */ - hpr->mrblr = MAX_FRAME_LENGTH; - - /* Setup CRC generator values for HDLC */ - hpr->c_mask = 0x0000F0B8; - hpr->c_pres = 0x0000FFFF; - - /* Initialize all error counters to 0 */ - hpr->disfc = 0; - hpr->crcec = 0; - hpr->abtsc = 0; - hpr->nmarc = 0; - hpr->retrc = 0; - - /* Set maximum frame length size */ - hpr->mflr = MAX_FRAME_LENGTH; - - /* set to 1 for per frame processing change later if needed */ - hpr->rfthr = 1; - - hpr->hmask = 0xff; - - hpr->haddr2 = SET_HDLC_UUA(keymile_slot); - hpr->haddr3 = hpr->haddr2; - hpr->haddr4 = hpr->haddr2; - /* broadcast */ - hpr->haddr1 = HDLC_BCAST; - - hpr->rbase = (unsigned int) &rtx->rxbd[0]; - hpr->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(MGS_CPM_CR_HDLC, 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, - MGS_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_cpm.cp_scc[MGS_SCC_HDLC].scc_gsmrl &= - ~(SCC_GSMRL_ENR | SCC_GSMRL_ENT); -#endif -} - -#endif /* CONFIG_KEYMILE_HDLC_ENET */ |
