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https://github.com/u-boot/u-boot.git
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8bde7f776c
- remove trailing white space, trailing empty lines, C++ comments, etc.
- split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c)
* Patches by Kenneth Johansson, 25 Jun 2003:
- major rework of command structure
(work done mostly by Michal Cendrowski and Joakim Kristiansen)
397 lines
8.1 KiB
C
397 lines
8.1 KiB
C
/*
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* PLB2800 internal switch ethernet driver.
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*
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* (C) Copyright 2003
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI) \
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&& defined(CONFIG_PLB2800_ETHER)
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#include <malloc.h>
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#include <net.h>
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#include <asm/addrspace.h>
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#define NUM_RX_DESC PKTBUFSRX
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#define TOUT_LOOP 1000000
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#define LONG_REF(addr) (*((volatile unsigned long*)addr))
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#define CMAC_CRX_CTRL LONG_REF(0xb800c870)
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#define CMAC_CTX_CTRL LONG_REF(0xb800c874)
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#define SYS_MAC_ADDR_0 LONG_REF(0xb800c878)
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#define SYS_MAC_ADDR_1 LONG_REF(0xb800c87c)
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#define MIPS_H_MASK LONG_REF(0xB800C810)
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#define MA_LEARN LONG_REF(0xb8008004)
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#define DA_LOOKUP LONG_REF(0xb8008008)
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#define CMAC_CRX_CTRL_PD 0x00000001
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#define CMAC_CRX_CTRL_CG 0x00000002
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#define CMAC_CRX_CTRL_PL_SHIFT 2
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#define CMAC_CRIT 0x0
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#define CMAC_NON_CRIT 0x1
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#define MBOX_STAT_ID_SHF 28
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#define MBOX_STAT_CP 0x80000000
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#define MBOX_STAT_MB 0x00000001
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#define EN_MA_LEARN 0x02000000
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#define EN_DA_LKUP 0x01000000
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#define MA_DEST_SHF 11
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#define DA_DEST_SHF 11
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#define DA_STATE_SHF 19
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#define TSTAMP_MS 0x00000000
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#define SW_H_MBOX4_MASK 0x08000000
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#define SW_H_MBOX3_MASK 0x04000000
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#define SW_H_MBOX2_MASK 0x02000000
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#define SW_H_MBOX1_MASK 0x01000000
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typedef volatile struct {
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unsigned int stat;
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unsigned int cmd;
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unsigned int cnt;
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unsigned int adr;
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} mailbox_t;
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#define MBOX_REG(mb) ((mailbox_t*)(0xb800c830+(mb<<4)))
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typedef volatile struct {
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unsigned int word0;
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unsigned int word1;
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unsigned int word2;
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} mbhdr_t;
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#define MBOX_MEM(mb) ((void*)(0xb800a000+((3-mb)<<11)))
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static int plb2800_eth_init(struct eth_device *dev, bd_t * bis);
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static int plb2800_eth_send(struct eth_device *dev, volatile void *packet,
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int length);
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static int plb2800_eth_recv(struct eth_device *dev);
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static void plb2800_eth_halt(struct eth_device *dev);
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static void plb2800_set_mac_addr(struct eth_device *dev, unsigned char * addr);
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static unsigned char * plb2800_get_mac_addr(void);
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static int rx_new;
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static int mac_addr_set = 0;
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int plb2800_eth_initialize(bd_t * bis)
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{
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struct eth_device *dev;
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ulong temp;
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#ifdef DEBUG
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printf("Entered plb2800_eth_initialize()\n");
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#endif
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if (!(dev = (struct eth_device *) malloc (sizeof *dev)))
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{
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printf("Failed to allocate memory\n");
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return 0;
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}
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memset(dev, 0, sizeof(*dev));
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sprintf(dev->name, "PLB2800 Switch");
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dev->init = plb2800_eth_init;
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dev->halt = plb2800_eth_halt;
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dev->send = plb2800_eth_send;
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dev->recv = plb2800_eth_recv;
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eth_register(dev);
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/* bug fix */
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*(ulong *)0xb800e800 = 0x838;
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/* Set MBOX ownership */
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temp = CMAC_CRIT << MBOX_STAT_ID_SHF;
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MBOX_REG(0)->stat = temp;
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MBOX_REG(1)->stat = temp;
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temp = CMAC_NON_CRIT << MBOX_STAT_ID_SHF;
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MBOX_REG(2)->stat = temp;
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MBOX_REG(3)->stat = temp;
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plb2800_set_mac_addr(dev, plb2800_get_mac_addr());
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/* Disable all Mbox interrupt */
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temp = MIPS_H_MASK;
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temp &= ~ (SW_H_MBOX1_MASK | SW_H_MBOX2_MASK | SW_H_MBOX3_MASK | SW_H_MBOX4_MASK) ;
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MIPS_H_MASK = temp;
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#ifdef DEBUG
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printf("Leaving plb2800_eth_initialize()\n");
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#endif
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return 1;
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}
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static int plb2800_eth_init(struct eth_device *dev, bd_t * bis)
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{
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#ifdef DEBUG
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printf("Entering plb2800_eth_init()\n");
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#endif
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plb2800_set_mac_addr(dev, dev->enetaddr);
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rx_new = 0;
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#ifdef DEBUG
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printf("Leaving plb2800_eth_init()\n");
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#endif
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return 0;
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}
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static int plb2800_eth_send(struct eth_device *dev, volatile void *packet,
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int length)
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{
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int i;
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int res = -1;
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u32 temp;
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mailbox_t * mb = MBOX_REG(0);
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char * mem = MBOX_MEM(0);
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#ifdef DEBUG
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printf("Entered plb2800_eth_send()\n");
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#endif
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if (length <= 0)
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{
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printf ("%s: bad packet size: %d\n", dev->name, length);
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goto Done;
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}
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if (length < 64)
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{
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length = 64;
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}
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temp = CMAC_CRX_CTRL_CG | ((length + 4) << CMAC_CRX_CTRL_PL_SHIFT);
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#ifdef DEBUG
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printf("0 mb->stat = 0x%x\n", mb->stat);
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#endif
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for(i = 0; mb->stat & (MBOX_STAT_CP | MBOX_STAT_MB); i++)
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{
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if (i >= TOUT_LOOP)
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{
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printf("%s: tx buffer not ready\n", dev->name);
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printf("1 mb->stat = 0x%x\n", mb->stat);
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goto Done;
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}
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}
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/* For some strange reason, memcpy doesn't work, here!
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*/
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do
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{
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int words = (length >> 2) + 1;
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unsigned int* dst = (unsigned int*)(mem);
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unsigned int* src = (unsigned int*)(packet);
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for (i = 0; i < words; i++)
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{
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*dst = *src;
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dst++;
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src++;
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};
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} while(0);
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CMAC_CRX_CTRL = temp;
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mb->cmd = MBOX_STAT_CP;
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#ifdef DEBUG
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printf("2 mb->stat = 0x%x\n", mb->stat);
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#endif
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res = length;
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Done:
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#ifdef DEBUG
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printf("Leaving plb2800_eth_send()\n");
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#endif
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return res;
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}
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static int plb2800_eth_recv(struct eth_device *dev)
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{
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int length = 0;
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mailbox_t * mbox = MBOX_REG(3);
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unsigned char * hdr = MBOX_MEM(3);
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unsigned int stat;
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#ifdef DEBUG
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printf("Entered plb2800_eth_recv()\n");
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#endif
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for (;;)
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{
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stat = mbox->stat;
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if (!(stat & MBOX_STAT_CP))
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{
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break;
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}
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length = ((*(hdr + 6) & 0x3f) << 8) + *(hdr + 7);
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memcpy((void *)NetRxPackets[rx_new], hdr + 12, length);
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stat &= ~MBOX_STAT_CP;
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mbox->stat = stat;
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#ifdef DEBUG
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{
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int i;
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for (i=0;i<length - 4;i++)
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{
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if (i % 16 == 0) printf("\n%04x: ", i);
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printf("%02X ", NetRxPackets[rx_new][i]);
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}
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printf("\n");
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}
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#endif
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if (length)
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{
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#ifdef DEBUG
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printf("Received %d bytes\n", length);
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#endif
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NetReceive((void*)(NetRxPackets[rx_new]),
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length - 4);
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}
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else
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{
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#if 1
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printf("Zero length!!!\n");
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#endif
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}
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rx_new = (rx_new + 1) % NUM_RX_DESC;
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}
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#ifdef DEBUG
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printf("Leaving plb2800_eth_recv()\n");
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#endif
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return length;
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}
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static void plb2800_eth_halt(struct eth_device *dev)
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{
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#ifdef DEBUG
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printf("Entered plb2800_eth_halt()\n");
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#endif
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#ifdef DEBUG
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printf("Leaving plb2800_eth_halt()\n");
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#endif
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}
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static void plb2800_set_mac_addr(struct eth_device *dev, unsigned char * addr)
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{
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char packet[60];
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ulong temp;
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int ix;
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if (mac_addr_set ||
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NULL == addr || memcmp(addr, "\0\0\0\0\0\0", 6) == 0)
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{
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return;
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}
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/* send one packet through CPU port
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* in order to learn system MAC address
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*/
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/* Set DA_LOOKUP register */
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temp = EN_MA_LEARN | (0 << DA_STATE_SHF) | (63 << DA_DEST_SHF);
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DA_LOOKUP = temp;
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/* Set MA_LEARN register */
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temp = 50 << MA_DEST_SHF; /* static entry */
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MA_LEARN = temp;
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/* set destination address */
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for (ix=0;ix<6;ix++)
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packet[ix] = 0xff;
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/* set source address = system MAC address */
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for (ix=0;ix<6;ix++)
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packet[6+ix] = addr[ix];
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/* set type field */
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packet[12]=0xaa;
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packet[13]=0x55;
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/* set data field */
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for(ix=14;ix<60;ix++)
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packet[ix] = 0x00;
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#ifdef DEBUG
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for (ix=0;ix<6;ix++)
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printf("mac_addr[%d]=%02X\n", ix, (unsigned char)packet[6+ix]);
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#endif
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/* set one packet */
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plb2800_eth_send(dev, packet, sizeof(packet));
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/* delay for a while */
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for(ix=0;ix<65535;ix++)
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temp = ~temp;
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/* Set CMAC_CTX_CTRL register */
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temp = TSTAMP_MS; /* no autocast */
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CMAC_CTX_CTRL = temp;
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/* Set DA_LOOKUP register */
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temp = EN_DA_LKUP;
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DA_LOOKUP = temp;
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mac_addr_set = 1;
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}
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static unsigned char * plb2800_get_mac_addr(void)
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{
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static unsigned char addr[6];
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char *tmp, *end;
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int i;
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tmp = getenv ("ethaddr");
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if (NULL == tmp) return NULL;
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for (i=0; i<6; i++) {
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addr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
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if (tmp)
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tmp = (*end) ? end+1 : end;
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}
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return addr;
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}
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#endif /* CONFIG_PLB2800_ETHER */
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