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net: ll_temac: Add LL TEMAC driver to u-boot
Xilinx LocalLink Tri-Mode Ether MAC driver can be used by Xilinx Microblaze or Xilinx ppc405/440 in SDMA and FIFO mode. DCR or XPS bus can be used. The driver uses and requires MII and PHYLIB. CP: 4 warnings: 'Use of volatile is usually wrong' I won't fix this, because it depends on the network driver subsystem. Reported-by: Michal Simek <monstr@monstr.eu> Signed-off-by: Stephan Linz <linz@li-pro.net>
This commit is contained in:
Stephan Linz
Joe Hershberger
parent
1295f08c7e
commit
df48265036
10 changed files with 1872 additions and 0 deletions
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@ -77,6 +77,8 @@ COBJS-$(CONFIG_ULI526X) += uli526x.o
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COBJS-$(CONFIG_VSC7385_ENET) += vsc7385.o
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COBJS-$(CONFIG_XILINX_AXIEMAC) += xilinx_axi_emac.o
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COBJS-$(CONFIG_XILINX_EMACLITE) += xilinx_emaclite.o
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COBJS-$(CONFIG_XILINX_LL_TEMAC) += xilinx_ll_temac.o xilinx_ll_temac_mdio.o \
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xilinx_ll_temac_fifo.o xilinx_ll_temac_sdma.o
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COBJS := $(sort $(COBJS-y))
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SRCS := $(COBJS:.o=.c)
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399
drivers/net/xilinx_ll_temac.c
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399
drivers/net/xilinx_ll_temac.c
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@ -0,0 +1,399 @@
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/*
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* Xilinx xps_ll_temac ethernet driver for u-boot
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*
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* supports SDMA or FIFO access and MDIO bus communication
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*
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* Copyright (C) 2011 - 2012 Stephan Linz <linz@li-pro.net>
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* Copyright (C) 2008 - 2011 Michal Simek <monstr@monstr.eu>
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* Copyright (C) 2008 - 2011 PetaLogix
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*
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* Based on Yoshio Kashiwagi kashiwagi@co-nss.co.jp driver
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* Copyright (C) 2008 Nissin Systems Co.,Ltd.
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* March 2008 created
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* [0]: http://www.xilinx.com/support/documentation
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*
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* [S]: [0]/ip_documentation/xps_ll_temac.pdf
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* [A]: [0]/application_notes/xapp1041.pdf
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*/
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#include <config.h>
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#include <common.h>
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#include <net.h>
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#include <netdev.h>
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#include <malloc.h>
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#include <asm/io.h>
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#include <miiphy.h>
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#include "xilinx_ll_temac.h"
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#include "xilinx_ll_temac_fifo.h"
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#include "xilinx_ll_temac_sdma.h"
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#include "xilinx_ll_temac_mdio.h"
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#if !defined(CONFIG_MII)
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# error "LL_TEMAC requires MII -- missing CONFIG_MII"
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#endif
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#if !defined(CONFIG_PHYLIB)
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# error "LL_TEMAC requires PHYLIB -- missing CONFIG_PHYLIB"
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#endif
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struct ll_temac_info {
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int flags;
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unsigned long base_addr;
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unsigned long ctrl_addr;
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char *devname;
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unsigned int phyaddr;
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char *mdio_busname;
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};
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/* Ethernet interface ready status */
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int ll_temac_check_status(struct temac_reg *regs, u32 mask)
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{
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unsigned timeout = 50; /* 1usec * 50 = 50usec */
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/*
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* Quote from LL TEMAC documentation: The bits in the RDY
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* register are asserted when there is no access in progress.
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* When an access is in progress, a bit corresponding to the
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* type of access is automatically de-asserted. The bit is
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* automatically re-asserted when the access is complete.
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*/
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while (timeout && (!(in_be32(®s->rdy) & mask))) {
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timeout--;
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udelay(1);
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}
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if (!timeout) {
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printf("%s: Timeout on 0x%08x @%p\n", __func__,
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mask, ®s->rdy);
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return 1;
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}
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return 0;
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}
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/*
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* Indirect write to ll_temac.
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*
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* http://www.xilinx.com/support/documentation/ip_documentation/xps_ll_temac.pdf
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* page 23, second paragraph, The use of CTL0 register or CTL1 register
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*/
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int ll_temac_indirect_set(struct temac_reg *regs, u16 regn, u32 reg_data)
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{
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out_be32(®s->lsw, (reg_data & MLSW_MASK));
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out_be32(®s->ctl, CTL_WEN | (regn & CTL_ADDR_MASK));
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if (ll_temac_check_status(regs, RSE_CFG_WR))
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return 0;
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return 1;
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}
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/*
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* Indirect read from ll_temac.
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*
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* http://www.xilinx.com/support/documentation/ip_documentation/xps_ll_temac.pdf
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* page 23, second paragraph, The use of CTL0 register or CTL1 register
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*/
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int ll_temac_indirect_get(struct temac_reg *regs, u16 regn, u32* reg_data)
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{
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out_be32(®s->ctl, (regn & CTL_ADDR_MASK));
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if (ll_temac_check_status(regs, RSE_CFG_RR))
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return 0;
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*reg_data = in_be32(®s->lsw) & MLSW_MASK;
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return 1;
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}
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/* setting sub-controller and ll_temac to proper setting */
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static int ll_temac_setup_ctrl(struct eth_device *dev)
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{
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struct ll_temac *ll_temac = dev->priv;
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struct temac_reg *regs = (struct temac_reg *)dev->iobase;
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if (ll_temac->ctrlreset && ll_temac->ctrlreset(dev))
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return 0;
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if (ll_temac->ctrlinit && ll_temac->ctrlinit(dev))
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return 0;
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/* Promiscuous mode disable */
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if (!ll_temac_indirect_set(regs, TEMAC_AFM, 0))
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return 0;
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/* Enable Receiver - RX bit */
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if (!ll_temac_indirect_set(regs, TEMAC_RCW1, RCW1_RX))
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return 0;
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/* Enable Transmitter - TX bit */
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if (!ll_temac_indirect_set(regs, TEMAC_TC, TC_TX))
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return 0;
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return 1;
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}
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/*
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* Configure ll_temac based on negotiated speed and duplex
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* reported by PHY handling code
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*/
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static int ll_temac_adjust_link(struct eth_device *dev)
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{
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unsigned int speed, emmc_reg;
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struct temac_reg *regs = (struct temac_reg *)dev->iobase;
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struct ll_temac *ll_temac = dev->priv;
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struct phy_device *phydev = ll_temac->phydev;
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if (!phydev->link) {
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printf("%s: No link.\n", phydev->dev->name);
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return 0;
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}
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switch (phydev->speed) {
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case 1000:
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speed = EMMC_LSPD_1000;
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break;
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case 100:
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speed = EMMC_LSPD_100;
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break;
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case 10:
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speed = EMMC_LSPD_10;
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break;
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default:
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return 0;
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}
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if (!ll_temac_indirect_get(regs, TEMAC_EMMC, &emmc_reg))
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return 0;
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emmc_reg &= ~EMMC_LSPD_MASK;
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emmc_reg |= speed;
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if (!ll_temac_indirect_set(regs, TEMAC_EMMC, emmc_reg))
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return 0;
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printf("%s: PHY is %s with %dbase%s, %s%s\n",
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dev->name, phydev->drv->name,
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phydev->speed, (phydev->port == PORT_TP) ? "T" : "X",
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(phydev->duplex) ? "FDX" : "HDX",
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(phydev->port == PORT_OTHER) ? ", unkown mode" : "");
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return 1;
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}
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/* setup mac addr */
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static int ll_temac_setup_mac_addr(struct eth_device *dev)
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{
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struct temac_reg *regs = (struct temac_reg *)dev->iobase;
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u32 val;
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/* set up unicast MAC address filter */
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val = ((dev->enetaddr[3] << 24) | (dev->enetaddr[2] << 16) |
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(dev->enetaddr[1] << 8) | (dev->enetaddr[0]));
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val &= UAW0_UADDR_MASK;
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if (!ll_temac_indirect_set(regs, TEMAC_UAW0, val))
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return 1;
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val = ((dev->enetaddr[5] << 8) | dev->enetaddr[4]);
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val &= UAW1_UADDR_MASK;
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if (!ll_temac_indirect_set(regs, TEMAC_UAW1, val))
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return 1;
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return 0;
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}
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/* halt device */
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static void ll_temac_halt(struct eth_device *dev)
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{
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struct ll_temac *ll_temac = dev->priv;
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struct temac_reg *regs = (struct temac_reg *)dev->iobase;
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/* Disable Receiver */
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ll_temac_indirect_set(regs, TEMAC_RCW0, 0);
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/* Disable Transmitter */
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ll_temac_indirect_set(regs, TEMAC_TC, 0);
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if (ll_temac->ctrlhalt)
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ll_temac->ctrlhalt(dev);
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/* Shut down the PHY, as needed */
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phy_shutdown(ll_temac->phydev);
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}
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static int ll_temac_init(struct eth_device *dev, bd_t *bis)
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{
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struct ll_temac *ll_temac = dev->priv;
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printf("%s: Xilinx XPS LocalLink Tri-Mode Ether MAC #%d at 0x%08X.\n",
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dev->name, dev->index, dev->iobase);
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if (!ll_temac_setup_ctrl(dev))
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return -1;
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/* Start up the PHY */
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phy_startup(ll_temac->phydev);
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if (!ll_temac_adjust_link(dev)) {
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ll_temac_halt(dev);
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return -1;
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}
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/* If there's no link, fail */
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return ll_temac->phydev->link ? 0 : -1;
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}
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/*
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* Discover which PHY is attached to the device, and configure it
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* properly. If the PHY is not recognized, then return 0
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* (failure). Otherwise, return 1
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*/
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static int ll_temac_phy_init(struct eth_device *dev)
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{
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struct ll_temac *ll_temac = dev->priv;
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struct phy_device *phydev;
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unsigned int supported = PHY_GBIT_FEATURES;
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/* interface - look at driver/net/tsec.c */
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phydev = phy_connect(ll_temac->bus, ll_temac->phyaddr,
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dev, PHY_INTERFACE_MODE_NONE);
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phydev->supported &= supported;
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phydev->advertising = phydev->supported;
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ll_temac->phydev = phydev;
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phy_config(phydev);
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return 1;
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}
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/*
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* Initialize a single ll_temac devices
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*
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* Returns the result of ll_temac phy interface that were initialized
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*/
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int xilinx_ll_temac_initialize(bd_t *bis, struct ll_temac_info *devinf)
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{
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struct eth_device *dev;
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struct ll_temac *ll_temac;
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dev = calloc(1, sizeof(*dev));
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if (dev == NULL)
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return 0;
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ll_temac = calloc(1, sizeof(struct ll_temac));
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if (ll_temac == NULL) {
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free(dev);
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return 0;
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}
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/* use given name or generate its own unique name */
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if (devinf->devname) {
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strncpy(dev->name, devinf->devname, NAMESIZE);
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} else {
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snprintf(dev->name, NAMESIZE, "lltemac.%lx", devinf->base_addr);
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devinf->devname = dev->name;
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}
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dev->iobase = devinf->base_addr;
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dev->priv = ll_temac;
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dev->init = ll_temac_init;
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dev->halt = ll_temac_halt;
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dev->write_hwaddr = ll_temac_setup_mac_addr;
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ll_temac->ctrladdr = devinf->ctrl_addr;
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if (devinf->flags & XILINX_LL_TEMAC_M_SDMA_PLB) {
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#if defined(CONFIG_XILINX_440) || defined(CONFIG_XILINX_405)
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if (devinf->flags & XILINX_LL_TEMAC_M_SDMA_DCR) {
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ll_temac_collect_xldcr_sdma_reg_addr(dev);
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ll_temac->in32 = ll_temac_xldcr_in32;
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ll_temac->out32 = ll_temac_xldcr_out32;
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} else
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#endif
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{
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ll_temac_collect_xlplb_sdma_reg_addr(dev);
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ll_temac->in32 = ll_temac_xlplb_in32;
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ll_temac->out32 = ll_temac_xlplb_out32;
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}
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ll_temac->ctrlinit = ll_temac_init_sdma;
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ll_temac->ctrlhalt = ll_temac_halt_sdma;
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ll_temac->ctrlreset = ll_temac_reset_sdma;
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dev->recv = ll_temac_recv_sdma;
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dev->send = ll_temac_send_sdma;
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} else {
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ll_temac->in32 = NULL;
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ll_temac->out32 = NULL;
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ll_temac->ctrlinit = NULL;
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ll_temac->ctrlhalt = NULL;
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ll_temac->ctrlreset = ll_temac_reset_fifo;
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dev->recv = ll_temac_recv_fifo;
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dev->send = ll_temac_send_fifo;
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}
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/* Link to specified MDIO bus */
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strncpy(ll_temac->mdio_busname, devinf->mdio_busname, MDIO_NAME_LEN);
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ll_temac->bus = miiphy_get_dev_by_name(ll_temac->mdio_busname);
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/* Looking for a valid PHY address if it is not yet set */
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if (devinf->phyaddr == -1)
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ll_temac->phyaddr = ll_temac_phy_addr(ll_temac->bus);
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else
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ll_temac->phyaddr = devinf->phyaddr;
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eth_register(dev);
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/* Try to initialize PHY here, and return */
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return ll_temac_phy_init(dev);
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}
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/*
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* Initialize a single ll_temac device with its mdio bus behind ll_temac
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*
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* Returns 1 if the ll_temac device and the mdio bus were initialized
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* otherwise returns 0
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*/
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int xilinx_ll_temac_eth_init(bd_t *bis, unsigned long base_addr, int flags,
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unsigned long ctrl_addr)
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{
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struct ll_temac_info devinf;
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struct ll_temac_mdio_info mdioinf;
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int ret;
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/* prepare the internal driver informations */
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devinf.flags = flags;
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devinf.base_addr = base_addr;
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devinf.ctrl_addr = ctrl_addr;
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devinf.devname = NULL;
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devinf.phyaddr = -1;
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mdioinf.name = devinf.mdio_busname = NULL;
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mdioinf.regs = (struct temac_reg *)devinf.base_addr;
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ret = xilinx_ll_temac_mdio_initialize(bis, &mdioinf);
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if (ret >= 0) {
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/*
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* If there was no MDIO bus name then take over the
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* new automaticaly generated by the MDIO init code.
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*/
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if (mdioinf.name != devinf.mdio_busname)
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devinf.mdio_busname = mdioinf.name;
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ret = xilinx_ll_temac_initialize(bis, &devinf);
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if (ret > 0)
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return 1;
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}
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return 0;
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}
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310
drivers/net/xilinx_ll_temac.h
Normal file
310
drivers/net/xilinx_ll_temac.h
Normal file
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@ -0,0 +1,310 @@
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/*
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* Xilinx xps_ll_temac ethernet driver for u-boot
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*
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* LL_TEMAC interface
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*
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* Copyright (C) 2011 - 2012 Stephan Linz <linz@li-pro.net>
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* Copyright (C) 2008 - 2011 Michal Simek <monstr@monstr.eu>
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* Copyright (C) 2008 - 2011 PetaLogix
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*
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* Based on Yoshio Kashiwagi kashiwagi@co-nss.co.jp driver
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* Copyright (C) 2008 Nissin Systems Co.,Ltd.
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* March 2008 created
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* [0]: http://www.xilinx.com/support/documentation
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*
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* [S]: [0]/ip_documentation/xps_ll_temac.pdf
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* [A]: [0]/application_notes/xapp1041.pdf
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*/
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#ifndef _XILINX_LL_TEMAC_
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#define _XILINX_LL_TEMAC_
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#include <config.h>
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#include <net.h>
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#include <phy.h>
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#include <miiphy.h>
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#include <asm/types.h>
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#include <asm/byteorder.h>
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||||
#include "xilinx_ll_temac_sdma.h"
|
||||
|
||||
#if !defined(__BIG_ENDIAN)
|
||||
# error LL_TEMAC requires big endianess
|
||||
#endif
|
||||
|
||||
/*
|
||||
* TEMAC Memory and Register Definition
|
||||
*
|
||||
* [1]: [0]/ip_documentation/xps_ll_temac.pdf
|
||||
* page 19, Memory and Register Descriptions
|
||||
*/
|
||||
struct temac_reg {
|
||||
/* direct soft registers (low part) */
|
||||
u32 raf; /* Reset and Address Filter */
|
||||
u32 tpf; /* Transmit Pause Frame */
|
||||
u32 ifgp; /* Transmit Inter Frame Gap Adjustment */
|
||||
u32 is; /* Interrupt Status */
|
||||
u32 ip; /* Interrupt Pending */
|
||||
u32 ie; /* Interrupt Enable */
|
||||
u32 ttag; /* Transmit VLAN Tag */
|
||||
u32 rtag; /* Receive VLAN Tag */
|
||||
/* hard TEMAC registers */
|
||||
u32 msw; /* Most Significant Word Data */
|
||||
u32 lsw; /* Least Significant Word Data */
|
||||
u32 ctl; /* Control */
|
||||
u32 rdy; /* Ready Status */
|
||||
/* direct soft registers (high part) */
|
||||
u32 uawl; /* Unicast Address Word Lower */
|
||||
u32 uawu; /* Unicast Address Word Upper */
|
||||
u32 tpid0; /* VLAN TPID Word 0 */
|
||||
u32 tpid1; /* VLAN TPID Word 1 */
|
||||
};
|
||||
|
||||
/* Reset and Address Filter Registers (raf), [1] p25 */
|
||||
#define RAF_SR (1 << 13)
|
||||
#define RAF_EMFE (1 << 12)
|
||||
#define RAF_NFE (1 << 11)
|
||||
#define RAF_RVSTM_POS 9
|
||||
#define RAF_RVSTM_MASK (3 << RAF_RVSTM_POS)
|
||||
#define RAF_TVSTM_POS 7
|
||||
#define RAF_TVSTM_MASK (3 << RAF_TVSTM_POS)
|
||||
#define RAF_RVTM_POS 5
|
||||
#define RAF_RVTM_MASK (3 << RAF_RVTM_POS)
|
||||
#define RAF_TVTM_POS 3
|
||||
#define RAF_TVTM_MASK (3 << RAF_TVTM_POS)
|
||||
#define RAF_BCREJ (1 << 2)
|
||||
#define RAF_MCREJ (1 << 1)
|
||||
#define RAF_HTRST (1 << 0)
|
||||
|
||||
/* Transmit Pause Frame Registers (tpf), [1] p28 */
|
||||
#define TPF_TPFV_POS 0
|
||||
#define TPF_TPFV_MASK (0xFFFF << TPF_TPFV_POS)
|
||||
|
||||
/* Transmit Inter Frame Gap Adjustment Registers (ifgp), [1] p28 */
|
||||
#define IFGP_POS 0
|
||||
#define IFGP_MASK (0xFF << IFGP_POS)
|
||||
|
||||
/* Interrupt Status, Pending, Enable Registers (is, ip, ie), [1] p29-33 */
|
||||
#define ISPE_MR (1 << 7)
|
||||
#define ISPE_RDL (1 << 6)
|
||||
#define ISPE_TC (1 << 5)
|
||||
#define ISPE_RFO (1 << 4)
|
||||
#define ISPE_RR (1 << 3)
|
||||
#define ISPE_RC (1 << 2)
|
||||
#define ISPE_AN (1 << 1)
|
||||
#define ISPE_HAC (1 << 0)
|
||||
|
||||
/* Transmit, Receive VLAN Tag Registers (ttag, rtag), [1] p34-35 */
|
||||
#define TRTAG_TPID_POS 16
|
||||
#define TRTAG_TPID_MASK (0xFFFF << TRTAG_TPID_POS)
|
||||
#define TRTAG_PRIO_POS 13
|
||||
#define TRTAG_PRIO_MASK (7 << TRTAG_PRIO_POS)
|
||||
#define TRTAG_CFI (1 << 12)
|
||||
#define TRTAG_VID_POS 0
|
||||
#define TRTAG_VID_MASK (0xFFF << TRTAG_VID_POS)
|
||||
|
||||
/* Most, Least Significant Word Data Register (msw, lsw), [1] p46 */
|
||||
#define MLSW_POS 0
|
||||
#define MLSW_MASK (~0UL << MLSW_POS)
|
||||
|
||||
/* LSW Data Register for PHY addresses (lsw), [1] p66 */
|
||||
#define LSW_REGAD_POS 0
|
||||
#define LSW_REGAD_MASK (0x1F << LSW_REGAD_POS)
|
||||
#define LSW_PHYAD_POS 5
|
||||
#define LSW_PHYAD_MASK (0x1F << LSW_PHYAD_POS)
|
||||
|
||||
/* LSW Data Register for PHY data (lsw), [1] p66 */
|
||||
#define LSW_REGDAT_POS 0
|
||||
#define LSW_REGDAT_MASK (0xFFFF << LSW_REGDAT_POS)
|
||||
|
||||
/* Control Register (ctl), [1] p47 */
|
||||
#define CTL_WEN (1 << 15)
|
||||
#define CTL_ADDR_POS 0
|
||||
#define CTL_ADDR_MASK (0x3FF << CTL_ADDR_POS)
|
||||
|
||||
/* Ready Status Register Ethernet (rdy), [1] p48 */
|
||||
#define RSE_HACS_RDY (1 << 14)
|
||||
#define RSE_CFG_WR (1 << 6)
|
||||
#define RSE_CFG_RR (1 << 5)
|
||||
#define RSE_AF_WR (1 << 4)
|
||||
#define RSE_AF_RR (1 << 3)
|
||||
#define RSE_MIIM_WR (1 << 2)
|
||||
#define RSE_MIIM_RR (1 << 1)
|
||||
#define RSE_FABR_RR (1 << 0)
|
||||
|
||||
/* Unicast Address Word Lower, Upper Registers (uawl, uawu), [1] p35-36 */
|
||||
#define UAWL_UADDR_POS 0
|
||||
#define UAWL_UADDR_MASK (~0UL << UAWL_UADDR_POS)
|
||||
#define UAWU_UADDR_POS 0
|
||||
#define UAWU_UADDR_MASK (0xFFFF << UAWU_UADDR_POS)
|
||||
|
||||
/* VLAN TPID Word 0, 1 Registers (tpid0, tpid1), [1] p37 */
|
||||
#define TPID0_V0_POS 0
|
||||
#define TPID0_V0_MASK (0xFFFF << TPID0_V0_POS)
|
||||
#define TPID0_V1_POS 16
|
||||
#define TPID0_V1_MASK (0xFFFF << TPID0_V1_POS)
|
||||
#define TPID1_V2_POS 0
|
||||
#define TPID1_V2_MASK (0xFFFF << TPID1_V2_POS)
|
||||
#define TPID1_V3_POS 16
|
||||
#define TPID1_V3_MASK (0xFFFF << TPID1_V3_POS)
|
||||
|
||||
/*
|
||||
* TEMAC Indirectly Addressable Register Index Enumeration
|
||||
*
|
||||
* [0]: http://www.xilinx.com/support/documentation
|
||||
*
|
||||
* [1]: [0]/ip_documentation/xps_ll_temac.pdf
|
||||
* page 23, PLB Indirectly Addressable TEMAC Registers
|
||||
*/
|
||||
enum temac_ctrl {
|
||||
TEMAC_RCW0 = 0x200,
|
||||
TEMAC_RCW1 = 0x240,
|
||||
TEMAC_TC = 0x280,
|
||||
TEMAC_FCC = 0x2C0,
|
||||
TEMAC_EMMC = 0x300,
|
||||
TEMAC_PHYC = 0x320,
|
||||
TEMAC_MC = 0x340,
|
||||
TEMAC_UAW0 = 0x380,
|
||||
TEMAC_UAW1 = 0x384,
|
||||
TEMAC_MAW0 = 0x388,
|
||||
TEMAC_MAW1 = 0x38C,
|
||||
TEMAC_AFM = 0x390,
|
||||
TEMAC_TIS = 0x3A0,
|
||||
TEMAC_TIE = 0x3A4,
|
||||
TEMAC_MIIMWD = 0x3B0,
|
||||
TEMAC_MIIMAI = 0x3B4
|
||||
};
|
||||
|
||||
/* Receive Configuration Word 0, 1 Registers (RCW0, RCW1), [1] p50-51 */
|
||||
#define RCW0_PADDR_POS 0
|
||||
#define RCW0_PADDR_MASK (~0UL << RCW_PADDR_POS)
|
||||
#define RCW1_RST (1 << 31)
|
||||
#define RCW1_JUM (1 << 30)
|
||||
#define RCW1_FCS (1 << 29)
|
||||
#define RCW1_RX (1 << 28)
|
||||
#define RCW1_VLAN (1 << 27)
|
||||
#define RCW1_HD (1 << 26)
|
||||
#define RCW1_LT_DIS (1 << 25)
|
||||
#define RCW1_PADDR_POS 0
|
||||
#define RCW1_PADDR_MASK (0xFFFF << RCW_PADDR_POS)
|
||||
|
||||
/* Transmit Configuration Registers (TC), [1] p52 */
|
||||
#define TC_RST (1 << 31)
|
||||
#define TC_JUM (1 << 30)
|
||||
#define TC_FCS (1 << 29)
|
||||
#define TC_TX (1 << 28)
|
||||
#define TC_VLAN (1 << 27)
|
||||
#define TC_HD (1 << 26)
|
||||
#define TC_IFG (1 << 25)
|
||||
|
||||
/* Flow Control Configuration Registers (FCC), [1] p54 */
|
||||
#define FCC_FCTX (1 << 30)
|
||||
#define FCC_FCRX (1 << 29)
|
||||
|
||||
/* Ethernet MAC Mode Configuration Registers (EMMC), [1] p54 */
|
||||
#define EMMC_LSPD_POS 30
|
||||
#define EMMC_LSPD_MASK (3 << EMMC_LSPD_POS)
|
||||
#define EMMC_LSPD_1000 (2 << EMMC_LSPD_POS)
|
||||
#define EMMC_LSPD_100 (1 << EMMC_LSPD_POS)
|
||||
#define EMMC_LSPD_10 0
|
||||
#define EMMC_RGMII (1 << 29)
|
||||
#define EMMC_SGMII (1 << 28)
|
||||
#define EMMC_GPCS (1 << 27)
|
||||
#define EMMC_HOST (1 << 26)
|
||||
#define EMMC_TX16 (1 << 25)
|
||||
#define EMMC_RX16 (1 << 24)
|
||||
|
||||
/* RGMII/SGMII Configuration Registers (PHYC), [1] p56 */
|
||||
#define PHYC_SLSPD_POS 30
|
||||
#define PHYC_SLSPD_MASK (3 << EMMC_SLSPD_POS)
|
||||
#define PHYC_SLSPD_1000 (2 << EMMC_SLSPD_POS)
|
||||
#define PHYC_SLSPD_100 (1 << EMMC_SLSPD_POS)
|
||||
#define PHYC_SLSPD_10 0
|
||||
#define PHYC_RLSPD_POS 2
|
||||
#define PHYC_RLSPD_MASK (3 << EMMC_RLSPD_POS)
|
||||
#define PHYC_RLSPD_1000 (2 << EMMC_RLSPD_POS)
|
||||
#define PHYC_RLSPD_100 (1 << EMMC_RLSPD_POS)
|
||||
#define PHYC_RLSPD_10 0
|
||||
#define PHYC_RGMII_HD (1 << 1)
|
||||
#define PHYC_RGMII_LINK (1 << 0)
|
||||
|
||||
/* Management Configuration Registers (MC), [1] p57 */
|
||||
#define MC_MDIOEN (1 << 6)
|
||||
#define MC_CLKDIV_POS 0
|
||||
#define MC_CLKDIV_MASK (0x3F << MC_CLKDIV_POS)
|
||||
|
||||
/*
|
||||
* fHOSTCLK fMDC = fHOSTCLK
|
||||
* fMDC = ------------------- ---------> MC_CLKDIV = -------- - 1
|
||||
* (1 + MC_CLKDIV) * 2 2.5 MHz 5MHz
|
||||
*/
|
||||
#define MC_CLKDIV(f, m) ((f / (2 * m)) - 1)
|
||||
#define MC_CLKDIV_25(f) MC_CLKDIV(f, 2500000)
|
||||
#define MC_CLKDIV_20(f) MC_CLKDIV(f, 2000000)
|
||||
#define MC_CLKDIV_15(f) MC_CLKDIV(f, 1500000)
|
||||
#define MC_CLKDIV_10(f) MC_CLKDIV(f, 1000000)
|
||||
|
||||
/* Unicast Address Word 0, 1 Registers (UAW0, UAW1), [1] p58-59 */
|
||||
#define UAW0_UADDR_POS 0
|
||||
#define UAW0_UADDR_MASK (~0UL << UAW0_UADDR_POS)
|
||||
#define UAW1_UADDR_POS 0
|
||||
#define UAW1_UADDR_MASK (0xFFFF << UAW1_UADDR_POS)
|
||||
|
||||
/* Multicast Address Word 0, 1 Registers (MAW0, MAW1), [1] p60 */
|
||||
#define MAW0_MADDR_POS 0
|
||||
#define MAW0_MADDR_MASK (~0UL << MAW0_MADDR_POS)
|
||||
#define MAW1_RNW (1 << 23)
|
||||
#define MAW1_MAIDX_POS 16
|
||||
#define MAW1_MAIDX_MASK (3 << MAW1_MAIDX_POS)
|
||||
#define MAW1_MADDR_POS 0
|
||||
#define MAW1_MADDR_MASK (0xFFFF << MAW1_MADDR_POS)
|
||||
|
||||
/* Address Filter Mode Registers (AFM), [1] p63 */
|
||||
#define AFM_PM (1 << 31)
|
||||
|
||||
/* Interrupt Status, Enable Registers (TIS, TIE), [1] p63-65 */
|
||||
#define TISE_CFG_W (1 << 6)
|
||||
#define TISE_CFG_R (1 << 5)
|
||||
#define TISE_AF_W (1 << 4)
|
||||
#define TISE_AF_R (1 << 3)
|
||||
#define TISE_MIIM_W (1 << 2)
|
||||
#define TISE_MIIM_R (1 << 1)
|
||||
#define TISE_FABR_R (1 << 0)
|
||||
|
||||
/* MII Management Write Data Registers (MIIMWD), [1] p66 */
|
||||
#define MIIMWD_DATA_POS 0
|
||||
#define MIIMWD_DATA_MASK (0xFFFF << MIIMWD_DATA_POS)
|
||||
|
||||
/* Ethernet interface ready status */
|
||||
int ll_temac_check_status(struct temac_reg *regs, u32 mask);
|
||||
|
||||
/* Indirect write to ll_temac. */
|
||||
int ll_temac_indirect_set(struct temac_reg *regs, u16 regn, u32 reg_data);
|
||||
|
||||
/* Indirect read from ll_temac. */
|
||||
int ll_temac_indirect_get(struct temac_reg *regs, u16 regn, u32* reg_data);
|
||||
|
||||
struct ll_temac {
|
||||
phys_addr_t ctrladdr;
|
||||
phys_addr_t sdma_reg_addr[SDMA_CTRL_REGNUMS];
|
||||
|
||||
unsigned (*in32)(phys_addr_t);
|
||||
void (*out32)(phys_addr_t, unsigned);
|
||||
|
||||
int (*ctrlinit) (struct eth_device *);
|
||||
int (*ctrlhalt) (struct eth_device *);
|
||||
int (*ctrlreset) (struct eth_device *);
|
||||
|
||||
int phyaddr;
|
||||
struct phy_device *phydev;
|
||||
struct mii_dev *bus;
|
||||
char mdio_busname[MDIO_NAME_LEN];
|
||||
};
|
||||
|
||||
#endif /* _XILINX_LL_TEMAC_ */
|
||||
143
drivers/net/xilinx_ll_temac_fifo.c
Normal file
143
drivers/net/xilinx_ll_temac_fifo.c
Normal file
|
|
@ -0,0 +1,143 @@
|
|||
/*
|
||||
* Xilinx xps_ll_temac ethernet driver for u-boot
|
||||
*
|
||||
* FIFO sub-controller
|
||||
*
|
||||
* Copyright (C) 2011 - 2012 Stephan Linz <linz@li-pro.net>
|
||||
* Copyright (C) 2008 - 2011 Michal Simek <monstr@monstr.eu>
|
||||
* Copyright (C) 2008 - 2011 PetaLogix
|
||||
*
|
||||
* Based on Yoshio Kashiwagi kashiwagi@co-nss.co.jp driver
|
||||
* Copyright (C) 2008 Nissin Systems Co.,Ltd.
|
||||
* March 2008 created
|
||||
*
|
||||
* CREDITS: tsec driver
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* [0]: http://www.xilinx.com/support/documentation
|
||||
*
|
||||
* [F]: [0]/ip_documentation/xps_ll_fifo.pdf
|
||||
* [S]: [0]/ip_documentation/xps_ll_temac.pdf
|
||||
* [A]: [0]/application_notes/xapp1041.pdf
|
||||
*/
|
||||
|
||||
#include <config.h>
|
||||
#include <common.h>
|
||||
#include <net.h>
|
||||
|
||||
#include <asm/types.h>
|
||||
#include <asm/io.h>
|
||||
|
||||
#include "xilinx_ll_temac.h"
|
||||
#include "xilinx_ll_temac_fifo.h"
|
||||
|
||||
int ll_temac_reset_fifo(struct eth_device *dev)
|
||||
{
|
||||
struct ll_temac *ll_temac = dev->priv;
|
||||
struct fifo_ctrl *fifo_ctrl = (void *)ll_temac->ctrladdr;
|
||||
|
||||
out_be32(&fifo_ctrl->tdfr, LL_FIFO_TDFR_KEY);
|
||||
out_be32(&fifo_ctrl->rdfr, LL_FIFO_RDFR_KEY);
|
||||
out_be32(&fifo_ctrl->isr, ~0UL);
|
||||
out_be32(&fifo_ctrl->ier, 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ll_temac_recv_fifo(struct eth_device *dev)
|
||||
{
|
||||
int i, length = 0;
|
||||
u32 *buf = (u32 *)NetRxPackets[0];
|
||||
struct ll_temac *ll_temac = dev->priv;
|
||||
struct fifo_ctrl *fifo_ctrl = (void *)ll_temac->ctrladdr;
|
||||
|
||||
if (in_be32(&fifo_ctrl->isr) & LL_FIFO_ISR_RC) {
|
||||
|
||||
/* reset isr */
|
||||
out_be32(&fifo_ctrl->isr, ~0UL);
|
||||
|
||||
/*
|
||||
* MAYBE here:
|
||||
* while (fifo_ctrl->isr);
|
||||
*/
|
||||
|
||||
/*
|
||||
* The length is written (into RLR) by the XPS LL FIFO
|
||||
* when the packet is received across the RX LocalLink
|
||||
* interface and the receive data FIFO had enough
|
||||
* locations that all of the packet data has been saved.
|
||||
* The RLR should only be read when a receive packet is
|
||||
* available for processing (the receive occupancy is
|
||||
* not zero). Once the RLR is read, the receive packet
|
||||
* data should be read from the receive data FIFO before
|
||||
* the RLR is read again.
|
||||
*
|
||||
* [F] page 17, Receive Length Register (RLR)
|
||||
*/
|
||||
if (in_be32(&fifo_ctrl->rdfo) & LL_FIFO_RDFO_MASK) {
|
||||
length = in_be32(&fifo_ctrl->rlf) & LL_FIFO_RLF_MASK;
|
||||
} else {
|
||||
printf("%s: Got error, no receive occupancy\n",
|
||||
__func__);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (length > PKTSIZE_ALIGN) {
|
||||
printf("%s: Got error, receive package too big (%i)\n",
|
||||
__func__, length);
|
||||
ll_temac_reset_fifo(dev);
|
||||
return -1;
|
||||
}
|
||||
|
||||
for (i = 0; i < length; i += 4)
|
||||
*buf++ = in_be32(&fifo_ctrl->rdfd);
|
||||
|
||||
NetReceive(NetRxPackets[0], length);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ll_temac_send_fifo(struct eth_device *dev, volatile void *packet,
|
||||
int length)
|
||||
{
|
||||
int i;
|
||||
u32 *buf = (u32 *)packet;
|
||||
struct ll_temac *ll_temac = dev->priv;
|
||||
struct fifo_ctrl *fifo_ctrl = (void *)ll_temac->ctrladdr;
|
||||
|
||||
if (length < LL_FIFO_TLF_MIN) {
|
||||
printf("%s: Got error, transmit package too small (%i)\n",
|
||||
__func__, length);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (length > LL_FIFO_TLF_MAX) {
|
||||
printf("%s: Got error, transmit package too big (%i)\n",
|
||||
__func__, length);
|
||||
return -1;
|
||||
}
|
||||
|
||||
for (i = 0; i < length; i += 4)
|
||||
out_be32(&fifo_ctrl->tdfd, *buf++);
|
||||
|
||||
/*
|
||||
* Once the packet length is written to the TLR it is
|
||||
* automatically moved to the transmit data FIFO with
|
||||
* the packet data freeing up the TLR for another value.
|
||||
* The packet length must be written to the TLR after
|
||||
* the packet data is written to the transmit data FIFO.
|
||||
* It is not valid to write data for multiple packets
|
||||
* to the transmit data FIFO before writing the packet
|
||||
* length values.
|
||||
*
|
||||
* [F] page 17, Transmit Length Register (TLR)
|
||||
*/
|
||||
out_be32(&fifo_ctrl->tlf, length);
|
||||
|
||||
return 0;
|
||||
}
|
||||
122
drivers/net/xilinx_ll_temac_fifo.h
Normal file
122
drivers/net/xilinx_ll_temac_fifo.h
Normal file
|
|
@ -0,0 +1,122 @@
|
|||
/*
|
||||
* Xilinx xps_ll_temac ethernet driver for u-boot
|
||||
*
|
||||
* FIFO sub-controller interface
|
||||
*
|
||||
* Copyright (C) 2011 - 2012 Stephan Linz <linz@li-pro.net>
|
||||
* Copyright (C) 2008 - 2011 Michal Simek <monstr@monstr.eu>
|
||||
* Copyright (C) 2008 - 2011 PetaLogix
|
||||
*
|
||||
* Based on Yoshio Kashiwagi kashiwagi@co-nss.co.jp driver
|
||||
* Copyright (C) 2008 Nissin Systems Co.,Ltd.
|
||||
* March 2008 created
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* [0]: http://www.xilinx.com/support/documentation
|
||||
*
|
||||
* [S]: [0]/ip_documentation/xps_ll_temac.pdf
|
||||
* [A]: [0]/application_notes/xapp1041.pdf
|
||||
*/
|
||||
#ifndef _XILINX_LL_TEMAC_FIFO_
|
||||
#define _XILINX_LL_TEMAC_FIFO_
|
||||
|
||||
#include <net.h>
|
||||
|
||||
#include <asm/types.h>
|
||||
#include <asm/byteorder.h>
|
||||
|
||||
#if !defined(__BIG_ENDIAN)
|
||||
# error LL_TEMAC requires big endianess
|
||||
#endif
|
||||
|
||||
/*
|
||||
* FIFO Register Definition
|
||||
*
|
||||
* Used for memory mapped access from and to (Rd/Td) the LocalLink (LL)
|
||||
* Tri-Mode Ether MAC (TEMAC) via the 2 kb full duplex FIFO Controller,
|
||||
* one for each.
|
||||
*
|
||||
* [1]: [0]/ip_documentation/xps_ll_fifo.pdf
|
||||
* page 10, Registers Definition
|
||||
*/
|
||||
struct fifo_ctrl {
|
||||
u32 isr; /* Interrupt Status Register (RW) */
|
||||
u32 ier; /* Interrupt Enable Register (RW) */
|
||||
u32 tdfr; /* Transmit Data FIFO Reset (WO) */
|
||||
u32 tdfv; /* Transmit Data FIFO Vacancy (RO) */
|
||||
u32 tdfd; /* Transmit Data FIFO 32bit wide Data write port (WO) */
|
||||
u32 tlf; /* Transmit Length FIFO (WO) */
|
||||
u32 rdfr; /* Receive Data FIFO Reset (WO) */
|
||||
u32 rdfo; /* Receive Data FIFO Occupancy (RO) */
|
||||
u32 rdfd; /* Receive Data FIFO 32bit wide Data read port (RO) */
|
||||
u32 rlf; /* Receive Length FIFO (RO) */
|
||||
u32 llr; /* LocalLink Reset (WO) */
|
||||
};
|
||||
|
||||
/* Interrupt Status Register (ISR), [1] p11 */
|
||||
#define LL_FIFO_ISR_RPURE (1 << 31) /* Receive Packet Underrun Read Err */
|
||||
#define LL_FIFO_ISR_RPORE (1 << 30) /* Receive Packet Overrun Read Err */
|
||||
#define LL_FIFO_ISR_RPUE (1 << 29) /* Receive Packet Underrun Error */
|
||||
#define LL_FIFO_ISR_TPOE (1 << 28) /* Transmit Packet Overrun Error */
|
||||
#define LL_FIFO_ISR_TC (1 << 27) /* Transmit Complete */
|
||||
#define LL_FIFO_ISR_RC (1 << 26) /* Receive Complete */
|
||||
#define LL_FIFO_ISR_TSE (1 << 25) /* Transmit Size Error */
|
||||
#define LL_FIFO_ISR_TRC (1 << 24) /* Transmit Reset Complete */
|
||||
#define LL_FIFO_ISR_RRC (1 << 23) /* Receive Reset Complete */
|
||||
|
||||
/* Interrupt Enable Register (IER), [1] p12/p13 */
|
||||
#define LL_FIFO_IER_RPURE (1 << 31) /* Receive Packet Underrun Read Err */
|
||||
#define LL_FIFO_IER_RPORE (1 << 30) /* Receive Packet Overrun Read Err */
|
||||
#define LL_FIFO_IER_RPUE (1 << 29) /* Receive Packet Underrun Error */
|
||||
#define LL_FIFO_IER_TPOE (1 << 28) /* Transmit Packet Overrun Error */
|
||||
#define LL_FIFO_IER_TC (1 << 27) /* Transmit Complete */
|
||||
#define LL_FIFO_IER_RC (1 << 26) /* Receive Complete */
|
||||
#define LL_FIFO_IER_TSE (1 << 25) /* Transmit Size Error */
|
||||
#define LL_FIFO_IER_TRC (1 << 24) /* Transmit Reset Complete */
|
||||
#define LL_FIFO_IER_RRC (1 << 23) /* Receive Reset Complete */
|
||||
|
||||
/* Transmit Data FIFO Reset (TDFR), [1] p13/p14 */
|
||||
#define LL_FIFO_TDFR_KEY 0x000000A5UL
|
||||
|
||||
/* Transmit Data FIFO Vacancy (TDFV), [1] p14 */
|
||||
#define LL_FIFO_TDFV_POS 0
|
||||
#define LL_FIFO_TDFV_MASK (0x000001FFUL << LL_FIFO_TDFV_POS)
|
||||
|
||||
/* Transmit Length FIFO (TLF), [1] p16/p17 */
|
||||
#define LL_FIFO_TLF_POS 0
|
||||
#define LL_FIFO_TLF_MASK (0x000007FFUL << LL_FIFO_TLF_POS)
|
||||
#define LL_FIFO_TLF_MIN ((4 * sizeof(u32)) & LL_FIFO_TLF_MASK)
|
||||
#define LL_FIFO_TLF_MAX ((510 * sizeof(u32)) & LL_FIFO_TLF_MASK)
|
||||
|
||||
/* Receive Data FIFO Reset (RDFR), [1] p15 */
|
||||
#define LL_FIFO_RDFR_KEY 0x000000A5UL
|
||||
|
||||
/* Receive Data FIFO Occupancy (RDFO), [1] p16 */
|
||||
#define LL_FIFO_RDFO_POS 0
|
||||
#define LL_FIFO_RDFO_MASK (0x000001FFUL << LL_FIFO_RDFO_POS)
|
||||
|
||||
/* Receive Length FIFO (RLF), [1] p17/p18 */
|
||||
#define LL_FIFO_RLF_POS 0
|
||||
#define LL_FIFO_RLF_MASK (0x000007FFUL << LL_FIFO_RLF_POS)
|
||||
#define LL_FIFO_RLF_MIN ((4 * sizeof(uint32)) & LL_FIFO_RLF_MASK)
|
||||
#define LL_FIFO_RLF_MAX ((510 * sizeof(uint32)) & LL_FIFO_RLF_MASK)
|
||||
|
||||
/* LocalLink Reset (LLR), [1] p18 */
|
||||
#define LL_FIFO_LLR_KEY 0x000000A5UL
|
||||
|
||||
|
||||
/* reset FIFO and IRQ, disable interrupts */
|
||||
int ll_temac_reset_fifo(struct eth_device *dev);
|
||||
|
||||
/* receive buffered data from FIFO (polling ISR) */
|
||||
int ll_temac_recv_fifo(struct eth_device *dev);
|
||||
|
||||
/* send buffered data to FIFO */
|
||||
int ll_temac_send_fifo(struct eth_device *dev, volatile void *packet,
|
||||
int length);
|
||||
|
||||
#endif /* _XILINX_LL_TEMAC_FIFO_ */
|
||||
180
drivers/net/xilinx_ll_temac_mdio.c
Normal file
180
drivers/net/xilinx_ll_temac_mdio.c
Normal file
|
|
@ -0,0 +1,180 @@
|
|||
/*
|
||||
* Xilinx xps_ll_temac ethernet driver for u-boot
|
||||
*
|
||||
* MDIO bus access
|
||||
*
|
||||
* Copyright (C) 2011 - 2012 Stephan Linz <linz@li-pro.net>
|
||||
* Copyright (C) 2008 - 2011 Michal Simek <monstr@monstr.eu>
|
||||
* Copyright (C) 2008 - 2011 PetaLogix
|
||||
*
|
||||
* Based on Yoshio Kashiwagi kashiwagi@co-nss.co.jp driver
|
||||
* Copyright (C) 2008 Nissin Systems Co.,Ltd.
|
||||
* March 2008 created
|
||||
*
|
||||
* CREDITS: tsec driver
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* [0]: http://www.xilinx.com/support/documentation
|
||||
*
|
||||
* [S]: [0]/ip_documentation/xps_ll_temac.pdf
|
||||
* [A]: [0]/application_notes/xapp1041.pdf
|
||||
*/
|
||||
|
||||
#include <config.h>
|
||||
#include <common.h>
|
||||
#include <miiphy.h>
|
||||
#include <phy.h>
|
||||
#include <malloc.h>
|
||||
#include <asm/io.h>
|
||||
|
||||
#include "xilinx_ll_temac.h"
|
||||
#include "xilinx_ll_temac_mdio.h"
|
||||
|
||||
#if !defined(CONFIG_MII)
|
||||
# error "LL_TEMAC requires MII -- missing CONFIG_MII"
|
||||
#endif
|
||||
|
||||
#if !defined(CONFIG_PHYLIB)
|
||||
# error "LL_TEMAC requires PHYLIB -- missing CONFIG_PHYLIB"
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Prior to PHY access, the MDIO clock must be setup. This driver will set a
|
||||
* safe default that should work with PLB bus speeds of up to 150 MHz and keep
|
||||
* the MDIO clock below 2.5 MHz. If the user wishes faster access to the PHY
|
||||
* then the clock divisor can be set to a different value by setting the
|
||||
* correct bus speed value with CONFIG_XILINX_LL_TEMAC_CLK.
|
||||
*/
|
||||
#if !defined(CONFIG_XILINX_LL_TEMAC_CLK)
|
||||
#define MDIO_CLOCK_DIV MC_CLKDIV_10(150000000)
|
||||
#else
|
||||
#define MDIO_CLOCK_DIV MC_CLKDIV_25(CONFIG_XILINX_LL_TEMAC_CLK)
|
||||
#endif
|
||||
|
||||
static int ll_temac_mdio_setup(struct mii_dev *bus)
|
||||
{
|
||||
struct temac_reg *regs = (struct temac_reg *)bus->priv;
|
||||
|
||||
/* setup MDIO clock */
|
||||
ll_temac_indirect_set(regs, TEMAC_MC,
|
||||
MC_MDIOEN | (MDIO_CLOCK_DIV & MC_CLKDIV_MASK));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Indirect MII PHY read via ll_temac.
|
||||
*
|
||||
* http://www.xilinx.com/support/documentation/ip_documentation/xps_ll_temac.pdf
|
||||
* page 67, Using the MII Management to Access PHY Registers
|
||||
*/
|
||||
int ll_temac_local_mdio_read(struct temac_reg *regs, int addr, int devad,
|
||||
int regnum)
|
||||
{
|
||||
out_be32(®s->lsw,
|
||||
((addr << LSW_PHYAD_POS) & LSW_PHYAD_MASK) |
|
||||
(regnum & LSW_REGAD_MASK));
|
||||
out_be32(®s->ctl, TEMAC_MIIMAI);
|
||||
|
||||
ll_temac_check_status(regs, RSE_MIIM_RR);
|
||||
|
||||
return in_be32(®s->lsw) & LSW_REGDAT_MASK;
|
||||
}
|
||||
|
||||
/*
|
||||
* Indirect MII PHY write via ll_temac.
|
||||
*
|
||||
* http://www.xilinx.com/support/documentation/ip_documentation/xps_ll_temac.pdf
|
||||
* page 67, Using the MII Management to Access PHY Registers
|
||||
*/
|
||||
void ll_temac_local_mdio_write(struct temac_reg *regs, int addr, int devad,
|
||||
int regnum, u16 value)
|
||||
{
|
||||
out_be32(®s->lsw, (value & LSW_REGDAT_MASK));
|
||||
out_be32(®s->ctl, CTL_WEN | TEMAC_MIIMWD);
|
||||
|
||||
out_be32(®s->lsw,
|
||||
((addr << LSW_PHYAD_POS) & LSW_PHYAD_MASK) |
|
||||
(regnum & LSW_REGAD_MASK));
|
||||
out_be32(®s->ctl, CTL_WEN | TEMAC_MIIMAI);
|
||||
|
||||
ll_temac_check_status(regs, RSE_MIIM_WR);
|
||||
}
|
||||
|
||||
int ll_temac_phy_read(struct mii_dev *bus, int addr, int devad, int regnum)
|
||||
{
|
||||
struct temac_reg *regs = (struct temac_reg *)bus->priv;
|
||||
|
||||
return ll_temac_local_mdio_read(regs, addr, devad, regnum);
|
||||
}
|
||||
|
||||
int ll_temac_phy_write(struct mii_dev *bus, int addr, int devad, int regnum,
|
||||
u16 value)
|
||||
{
|
||||
struct temac_reg *regs = (struct temac_reg *)bus->priv;
|
||||
|
||||
ll_temac_local_mdio_write(regs, addr, devad, regnum, value);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Use MII register 1 (MII status register) to detect PHY
|
||||
*
|
||||
* A Mask used to verify certain PHY features (register content)
|
||||
* in the PHY detection register:
|
||||
* Auto-negotiation support, 10Mbps half/full duplex support
|
||||
*/
|
||||
#define PHY_DETECT_REG MII_BMSR
|
||||
#define PHY_DETECT_MASK (BMSR_10FULL | BMSR_10HALF | BMSR_ANEGCAPABLE)
|
||||
|
||||
/* Looking for a valid PHY address */
|
||||
int ll_temac_phy_addr(struct mii_dev *bus)
|
||||
{
|
||||
struct temac_reg *regs = (struct temac_reg *)bus->priv;
|
||||
unsigned short val;
|
||||
unsigned int phy;
|
||||
|
||||
for (phy = PHY_MAX_ADDR; phy >= 0; phy--) {
|
||||
val = ll_temac_local_mdio_read(regs, phy, 0, PHY_DETECT_REG);
|
||||
if ((val != 0xFFFF) &&
|
||||
((val & PHY_DETECT_MASK) == PHY_DETECT_MASK)) {
|
||||
/* Found a valid PHY address */
|
||||
return phy;
|
||||
}
|
||||
}
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
int xilinx_ll_temac_mdio_initialize(bd_t *bis, struct ll_temac_mdio_info *info)
|
||||
{
|
||||
struct mii_dev *bus = mdio_alloc();
|
||||
|
||||
if (!bus) {
|
||||
printf("Failed to allocate LL_TEMAC MDIO bus: %s\n",
|
||||
info->name);
|
||||
return -1;
|
||||
}
|
||||
|
||||
bus->read = ll_temac_phy_read;
|
||||
bus->write = ll_temac_phy_write;
|
||||
bus->reset = NULL;
|
||||
|
||||
/* use given name or generate its own unique name */
|
||||
if (info->name) {
|
||||
strncpy(bus->name, info->name, MDIO_NAME_LEN);
|
||||
} else {
|
||||
snprintf(bus->name, MDIO_NAME_LEN, "lltemii.%p", info->regs);
|
||||
info->name = bus->name;
|
||||
}
|
||||
|
||||
bus->priv = info->regs;
|
||||
|
||||
ll_temac_mdio_setup(bus);
|
||||
return mdio_register(bus);
|
||||
}
|
||||
53
drivers/net/xilinx_ll_temac_mdio.h
Normal file
53
drivers/net/xilinx_ll_temac_mdio.h
Normal file
|
|
@ -0,0 +1,53 @@
|
|||
/*
|
||||
* Xilinx xps_ll_temac ethernet driver for u-boot
|
||||
*
|
||||
* MDIO bus access interface
|
||||
*
|
||||
* Copyright (C) 2011 - 2012 Stephan Linz <linz@li-pro.net>
|
||||
* Copyright (C) 2008 - 2011 Michal Simek <monstr@monstr.eu>
|
||||
* Copyright (C) 2008 - 2011 PetaLogix
|
||||
*
|
||||
* Based on Yoshio Kashiwagi kashiwagi@co-nss.co.jp driver
|
||||
* Copyright (C) 2008 Nissin Systems Co.,Ltd.
|
||||
* March 2008 created
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* [0]: http://www.xilinx.com/support/documentation
|
||||
*
|
||||
* [S]: [0]/ip_documentation/xps_ll_temac.pdf
|
||||
* [A]: [0]/application_notes/xapp1041.pdf
|
||||
*/
|
||||
#ifndef _XILINX_LL_TEMAC_MDIO_
|
||||
#define _XILINX_LL_TEMAC_MDIO_
|
||||
|
||||
#include <net.h>
|
||||
#include <miiphy.h>
|
||||
|
||||
#include <asm/types.h>
|
||||
#include <asm/byteorder.h>
|
||||
|
||||
#include "xilinx_ll_temac.h"
|
||||
|
||||
int ll_temac_local_mdio_read(struct temac_reg *regs, int addr, int devad,
|
||||
int regnum);
|
||||
void ll_temac_local_mdio_write(struct temac_reg *regs, int addr, int devad,
|
||||
int regnum, u16 value);
|
||||
|
||||
int ll_temac_phy_read(struct mii_dev *bus, int addr, int devad, int regnum);
|
||||
int ll_temac_phy_write(struct mii_dev *bus, int addr, int devad, int regnum,
|
||||
u16 value);
|
||||
|
||||
int ll_temac_phy_addr(struct mii_dev *bus);
|
||||
|
||||
struct ll_temac_mdio_info {
|
||||
struct temac_reg *regs;
|
||||
char *name;
|
||||
};
|
||||
|
||||
int xilinx_ll_temac_mdio_initialize(bd_t *bis, struct ll_temac_mdio_info *info);
|
||||
|
||||
#endif /* _XILINX_LL_TEMAC_MDIO_ */
|
||||
370
drivers/net/xilinx_ll_temac_sdma.c
Normal file
370
drivers/net/xilinx_ll_temac_sdma.c
Normal file
|
|
@ -0,0 +1,370 @@
|
|||
/*
|
||||
* Xilinx xps_ll_temac ethernet driver for u-boot
|
||||
*
|
||||
* SDMA sub-controller
|
||||
*
|
||||
* Copyright (C) 2011 - 2012 Stephan Linz <linz@li-pro.net>
|
||||
* Copyright (C) 2008 - 2011 Michal Simek <monstr@monstr.eu>
|
||||
* Copyright (C) 2008 - 2011 PetaLogix
|
||||
*
|
||||
* Based on Yoshio Kashiwagi kashiwagi@co-nss.co.jp driver
|
||||
* Copyright (C) 2008 Nissin Systems Co.,Ltd.
|
||||
* March 2008 created
|
||||
*
|
||||
* CREDITS: tsec driver
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* [0]: http://www.xilinx.com/support/documentation
|
||||
*
|
||||
* [M]: [0]/ip_documentation/mpmc.pdf
|
||||
* [S]: [0]/ip_documentation/xps_ll_temac.pdf
|
||||
* [A]: [0]/application_notes/xapp1041.pdf
|
||||
*/
|
||||
|
||||
#include <config.h>
|
||||
#include <common.h>
|
||||
#include <net.h>
|
||||
|
||||
#include <asm/types.h>
|
||||
#include <asm/io.h>
|
||||
|
||||
#include "xilinx_ll_temac.h"
|
||||
#include "xilinx_ll_temac_sdma.h"
|
||||
|
||||
#define TX_BUF_CNT 2
|
||||
|
||||
static unsigned int rx_idx; /* index of the current RX buffer */
|
||||
static unsigned int tx_idx; /* index of the current TX buffer */
|
||||
|
||||
struct rtx_cdmac_bd {
|
||||
struct cdmac_bd rx[PKTBUFSRX];
|
||||
struct cdmac_bd tx[TX_BUF_CNT];
|
||||
};
|
||||
|
||||
/*
|
||||
* DMA Buffer Descriptor alignment
|
||||
*
|
||||
* If the address contained in the Next Descriptor Pointer register is not
|
||||
* 8-word aligned or reaches beyond the range of available memory, the SDMA
|
||||
* halts processing and sets the CDMAC_BD_STCTRL_ERROR bit in the respective
|
||||
* status register (tx_chnl_sts or rx_chnl_sts).
|
||||
*
|
||||
* [1]: [0]/ip_documentation/mpmc.pdf
|
||||
* page 161, Next Descriptor Pointer
|
||||
*/
|
||||
static struct rtx_cdmac_bd cdmac_bd __aligned(32);
|
||||
|
||||
#if defined(CONFIG_XILINX_440) || defined(CONFIG_XILINX_405)
|
||||
|
||||
/*
|
||||
* Indirect DCR access operations mi{ft}dcr_xilinx() espacialy
|
||||
* for Xilinx PowerPC implementations on FPGA.
|
||||
*
|
||||
* FIXME: This part should go up to arch/powerpc -- but where?
|
||||
*/
|
||||
#include <asm/processor.h>
|
||||
#define XILINX_INDIRECT_DCR_ADDRESS_REG 0
|
||||
#define XILINX_INDIRECT_DCR_ACCESS_REG 1
|
||||
inline unsigned mifdcr_xilinx(const unsigned dcrn)
|
||||
{
|
||||
mtdcr(XILINX_INDIRECT_DCR_ADDRESS_REG, dcrn);
|
||||
return mfdcr(XILINX_INDIRECT_DCR_ACCESS_REG);
|
||||
}
|
||||
inline void mitdcr_xilinx(const unsigned dcrn, int val)
|
||||
{
|
||||
mtdcr(XILINX_INDIRECT_DCR_ADDRESS_REG, dcrn);
|
||||
mtdcr(XILINX_INDIRECT_DCR_ACCESS_REG, val);
|
||||
}
|
||||
|
||||
/* Xilinx Device Control Register (DCR) in/out accessors */
|
||||
inline unsigned ll_temac_xldcr_in32(phys_addr_t addr)
|
||||
{
|
||||
return mifdcr_xilinx((const unsigned)addr);
|
||||
}
|
||||
inline void ll_temac_xldcr_out32(phys_addr_t addr, unsigned value)
|
||||
{
|
||||
mitdcr_xilinx((const unsigned)addr, value);
|
||||
}
|
||||
|
||||
void ll_temac_collect_xldcr_sdma_reg_addr(struct eth_device *dev)
|
||||
{
|
||||
struct ll_temac *ll_temac = dev->priv;
|
||||
phys_addr_t dmac_ctrl = ll_temac->ctrladdr;
|
||||
phys_addr_t *ra = ll_temac->sdma_reg_addr;
|
||||
|
||||
ra[TX_NXTDESC_PTR] = dmac_ctrl + TX_NXTDESC_PTR;
|
||||
ra[TX_CURBUF_ADDR] = dmac_ctrl + TX_CURBUF_ADDR;
|
||||
ra[TX_CURBUF_LENGTH] = dmac_ctrl + TX_CURBUF_LENGTH;
|
||||
ra[TX_CURDESC_PTR] = dmac_ctrl + TX_CURDESC_PTR;
|
||||
ra[TX_TAILDESC_PTR] = dmac_ctrl + TX_TAILDESC_PTR;
|
||||
ra[TX_CHNL_CTRL] = dmac_ctrl + TX_CHNL_CTRL;
|
||||
ra[TX_IRQ_REG] = dmac_ctrl + TX_IRQ_REG;
|
||||
ra[TX_CHNL_STS] = dmac_ctrl + TX_CHNL_STS;
|
||||
ra[RX_NXTDESC_PTR] = dmac_ctrl + RX_NXTDESC_PTR;
|
||||
ra[RX_CURBUF_ADDR] = dmac_ctrl + RX_CURBUF_ADDR;
|
||||
ra[RX_CURBUF_LENGTH] = dmac_ctrl + RX_CURBUF_LENGTH;
|
||||
ra[RX_CURDESC_PTR] = dmac_ctrl + RX_CURDESC_PTR;
|
||||
ra[RX_TAILDESC_PTR] = dmac_ctrl + RX_TAILDESC_PTR;
|
||||
ra[RX_CHNL_CTRL] = dmac_ctrl + RX_CHNL_CTRL;
|
||||
ra[RX_IRQ_REG] = dmac_ctrl + RX_IRQ_REG;
|
||||
ra[RX_CHNL_STS] = dmac_ctrl + RX_CHNL_STS;
|
||||
ra[DMA_CONTROL_REG] = dmac_ctrl + DMA_CONTROL_REG;
|
||||
}
|
||||
|
||||
#endif /* CONFIG_XILINX_440 || ONFIG_XILINX_405 */
|
||||
|
||||
/* Xilinx Processor Local Bus (PLB) in/out accessors */
|
||||
inline unsigned ll_temac_xlplb_in32(phys_addr_t addr)
|
||||
{
|
||||
return in_be32((void *)addr);
|
||||
}
|
||||
inline void ll_temac_xlplb_out32(phys_addr_t addr, unsigned value)
|
||||
{
|
||||
out_be32((void *)addr, value);
|
||||
}
|
||||
|
||||
/* collect all register addresses for Xilinx PLB in/out accessors */
|
||||
void ll_temac_collect_xlplb_sdma_reg_addr(struct eth_device *dev)
|
||||
{
|
||||
struct ll_temac *ll_temac = dev->priv;
|
||||
struct sdma_ctrl *sdma_ctrl = (void *)ll_temac->ctrladdr;
|
||||
phys_addr_t *ra = ll_temac->sdma_reg_addr;
|
||||
|
||||
ra[TX_NXTDESC_PTR] = (phys_addr_t)&sdma_ctrl->tx_nxtdesc_ptr;
|
||||
ra[TX_CURBUF_ADDR] = (phys_addr_t)&sdma_ctrl->tx_curbuf_addr;
|
||||
ra[TX_CURBUF_LENGTH] = (phys_addr_t)&sdma_ctrl->tx_curbuf_length;
|
||||
ra[TX_CURDESC_PTR] = (phys_addr_t)&sdma_ctrl->tx_curdesc_ptr;
|
||||
ra[TX_TAILDESC_PTR] = (phys_addr_t)&sdma_ctrl->tx_taildesc_ptr;
|
||||
ra[TX_CHNL_CTRL] = (phys_addr_t)&sdma_ctrl->tx_chnl_ctrl;
|
||||
ra[TX_IRQ_REG] = (phys_addr_t)&sdma_ctrl->tx_irq_reg;
|
||||
ra[TX_CHNL_STS] = (phys_addr_t)&sdma_ctrl->tx_chnl_sts;
|
||||
ra[RX_NXTDESC_PTR] = (phys_addr_t)&sdma_ctrl->rx_nxtdesc_ptr;
|
||||
ra[RX_CURBUF_ADDR] = (phys_addr_t)&sdma_ctrl->rx_curbuf_addr;
|
||||
ra[RX_CURBUF_LENGTH] = (phys_addr_t)&sdma_ctrl->rx_curbuf_length;
|
||||
ra[RX_CURDESC_PTR] = (phys_addr_t)&sdma_ctrl->rx_curdesc_ptr;
|
||||
ra[RX_TAILDESC_PTR] = (phys_addr_t)&sdma_ctrl->rx_taildesc_ptr;
|
||||
ra[RX_CHNL_CTRL] = (phys_addr_t)&sdma_ctrl->rx_chnl_ctrl;
|
||||
ra[RX_IRQ_REG] = (phys_addr_t)&sdma_ctrl->rx_irq_reg;
|
||||
ra[RX_CHNL_STS] = (phys_addr_t)&sdma_ctrl->rx_chnl_sts;
|
||||
ra[DMA_CONTROL_REG] = (phys_addr_t)&sdma_ctrl->dma_control_reg;
|
||||
}
|
||||
|
||||
/* Check for TX and RX channel errors. */
|
||||
static inline int ll_temac_sdma_error(struct eth_device *dev)
|
||||
{
|
||||
int err;
|
||||
struct ll_temac *ll_temac = dev->priv;
|
||||
phys_addr_t *ra = ll_temac->sdma_reg_addr;
|
||||
|
||||
err = ll_temac->in32(ra[TX_CHNL_STS]) & CHNL_STS_ERROR;
|
||||
err |= ll_temac->in32(ra[RX_CHNL_STS]) & CHNL_STS_ERROR;
|
||||
|
||||
return err;
|
||||
}
|
||||
|
||||
int ll_temac_init_sdma(struct eth_device *dev)
|
||||
{
|
||||
struct ll_temac *ll_temac = dev->priv;
|
||||
struct cdmac_bd *rx_dp;
|
||||
struct cdmac_bd *tx_dp;
|
||||
phys_addr_t *ra = ll_temac->sdma_reg_addr;
|
||||
int i;
|
||||
|
||||
printf("%s: SDMA: %d Rx buffers, %d Tx buffers\n",
|
||||
dev->name, PKTBUFSRX, TX_BUF_CNT);
|
||||
|
||||
/* Initialize the Rx Buffer descriptors */
|
||||
for (i = 0; i < PKTBUFSRX; i++) {
|
||||
rx_dp = &cdmac_bd.rx[i];
|
||||
memset(rx_dp, 0, sizeof(*rx_dp));
|
||||
rx_dp->next_p = rx_dp;
|
||||
rx_dp->buf_len = PKTSIZE_ALIGN;
|
||||
rx_dp->phys_buf_p = (u8 *)NetRxPackets[i];
|
||||
flush_cache((u32)rx_dp->phys_buf_p, PKTSIZE_ALIGN);
|
||||
}
|
||||
flush_cache((u32)cdmac_bd.rx, sizeof(cdmac_bd.rx));
|
||||
|
||||
/* Initialize the TX Buffer Descriptors */
|
||||
for (i = 0; i < TX_BUF_CNT; i++) {
|
||||
tx_dp = &cdmac_bd.tx[i];
|
||||
memset(tx_dp, 0, sizeof(*tx_dp));
|
||||
tx_dp->next_p = tx_dp;
|
||||
}
|
||||
flush_cache((u32)cdmac_bd.tx, sizeof(cdmac_bd.tx));
|
||||
|
||||
/* Reset index counter to the Rx and Tx Buffer descriptors */
|
||||
rx_idx = tx_idx = 0;
|
||||
|
||||
/* initial Rx DMA start by writing to respective TAILDESC_PTR */
|
||||
ll_temac->out32(ra[RX_CURDESC_PTR], (int)&cdmac_bd.rx[rx_idx]);
|
||||
ll_temac->out32(ra[RX_TAILDESC_PTR], (int)&cdmac_bd.rx[rx_idx]);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ll_temac_halt_sdma(struct eth_device *dev)
|
||||
{
|
||||
unsigned timeout = 50; /* 1usec * 50 = 50usec */
|
||||
struct ll_temac *ll_temac = dev->priv;
|
||||
phys_addr_t *ra = ll_temac->sdma_reg_addr;
|
||||
|
||||
/*
|
||||
* Soft reset the DMA
|
||||
*
|
||||
* Quote from MPMC documentation: Writing a 1 to this field
|
||||
* forces the DMA engine to shutdown and reset itself. After
|
||||
* setting this bit, software must poll it until the bit is
|
||||
* cleared by the DMA. This indicates that the reset process
|
||||
* is done and the pipeline has been flushed.
|
||||
*/
|
||||
ll_temac->out32(ra[DMA_CONTROL_REG], DMA_CONTROL_RESET);
|
||||
while (timeout && (ll_temac->in32(ra[DMA_CONTROL_REG])
|
||||
& DMA_CONTROL_RESET)) {
|
||||
timeout--;
|
||||
udelay(1);
|
||||
}
|
||||
|
||||
if (!timeout) {
|
||||
printf("%s: Timeout\n", __func__);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ll_temac_reset_sdma(struct eth_device *dev)
|
||||
{
|
||||
u32 r;
|
||||
struct ll_temac *ll_temac = dev->priv;
|
||||
phys_addr_t *ra = ll_temac->sdma_reg_addr;
|
||||
|
||||
/* Soft reset the DMA. */
|
||||
if (ll_temac_halt_sdma(dev))
|
||||
return -1;
|
||||
|
||||
/* Now clear the interrupts. */
|
||||
r = ll_temac->in32(ra[TX_CHNL_CTRL]);
|
||||
r &= ~CHNL_CTRL_IRQ_MASK;
|
||||
ll_temac->out32(ra[TX_CHNL_CTRL], r);
|
||||
|
||||
r = ll_temac->in32(ra[RX_CHNL_CTRL]);
|
||||
r &= ~CHNL_CTRL_IRQ_MASK;
|
||||
ll_temac->out32(ra[RX_CHNL_CTRL], r);
|
||||
|
||||
/* Now ACK pending IRQs. */
|
||||
ll_temac->out32(ra[TX_IRQ_REG], IRQ_REG_IRQ_MASK);
|
||||
ll_temac->out32(ra[RX_IRQ_REG], IRQ_REG_IRQ_MASK);
|
||||
|
||||
/* Set tail-ptr mode, disable errors for both channels. */
|
||||
ll_temac->out32(ra[DMA_CONTROL_REG],
|
||||
/* Enable use of tail pointer register */
|
||||
DMA_CONTROL_TPE |
|
||||
/* Disable error when 2 or 4 bit coalesce cnt overfl */
|
||||
DMA_CONTROL_RXOCEID |
|
||||
/* Disable error when 2 or 4 bit coalesce cnt overfl */
|
||||
DMA_CONTROL_TXOCEID);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ll_temac_recv_sdma(struct eth_device *dev)
|
||||
{
|
||||
int length, pb_idx;
|
||||
struct cdmac_bd *rx_dp = &cdmac_bd.rx[rx_idx];
|
||||
struct ll_temac *ll_temac = dev->priv;
|
||||
phys_addr_t *ra = ll_temac->sdma_reg_addr;
|
||||
|
||||
if (ll_temac_sdma_error(dev)) {
|
||||
|
||||
if (ll_temac_reset_sdma(dev))
|
||||
return -1;
|
||||
|
||||
ll_temac_init_sdma(dev);
|
||||
}
|
||||
|
||||
flush_cache((u32)rx_dp, sizeof(*rx_dp));
|
||||
|
||||
if (!(rx_dp->sca.stctrl & CDMAC_BD_STCTRL_COMPLETED))
|
||||
return 0;
|
||||
|
||||
if (rx_dp->sca.stctrl & (CDMAC_BD_STCTRL_SOP | CDMAC_BD_STCTRL_EOP)) {
|
||||
pb_idx = rx_idx;
|
||||
length = rx_dp->sca.app[4] & CDMAC_BD_APP4_RXBYTECNT_MASK;
|
||||
} else {
|
||||
pb_idx = -1;
|
||||
length = 0;
|
||||
printf("%s: Got part of package, unsupported (%x)\n",
|
||||
__func__, rx_dp->sca.stctrl);
|
||||
}
|
||||
|
||||
/* flip the buffer */
|
||||
flush_cache((u32)rx_dp->phys_buf_p, length);
|
||||
|
||||
/* reset the current descriptor */
|
||||
rx_dp->sca.stctrl = 0;
|
||||
rx_dp->sca.app[4] = 0;
|
||||
flush_cache((u32)rx_dp, sizeof(*rx_dp));
|
||||
|
||||
/* Find next empty buffer descriptor, preparation for next iteration */
|
||||
rx_idx = (rx_idx + 1) % PKTBUFSRX;
|
||||
rx_dp = &cdmac_bd.rx[rx_idx];
|
||||
flush_cache((u32)rx_dp, sizeof(*rx_dp));
|
||||
|
||||
/* DMA start by writing to respective TAILDESC_PTR */
|
||||
ll_temac->out32(ra[RX_CURDESC_PTR], (int)&cdmac_bd.rx[rx_idx]);
|
||||
ll_temac->out32(ra[RX_TAILDESC_PTR], (int)&cdmac_bd.rx[rx_idx]);
|
||||
|
||||
if (length > 0 && pb_idx != -1)
|
||||
NetReceive(NetRxPackets[pb_idx], length);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ll_temac_send_sdma(struct eth_device *dev, volatile void *packet,
|
||||
int length)
|
||||
{
|
||||
unsigned timeout = 50; /* 1usec * 50 = 50usec */
|
||||
struct cdmac_bd *tx_dp = &cdmac_bd.tx[tx_idx];
|
||||
struct ll_temac *ll_temac = dev->priv;
|
||||
phys_addr_t *ra = ll_temac->sdma_reg_addr;
|
||||
|
||||
if (ll_temac_sdma_error(dev)) {
|
||||
|
||||
if (ll_temac_reset_sdma(dev))
|
||||
return -1;
|
||||
|
||||
ll_temac_init_sdma(dev);
|
||||
}
|
||||
|
||||
tx_dp->phys_buf_p = (u8 *)packet;
|
||||
tx_dp->buf_len = length;
|
||||
tx_dp->sca.stctrl = CDMAC_BD_STCTRL_SOP | CDMAC_BD_STCTRL_EOP |
|
||||
CDMAC_BD_STCTRL_STOP_ON_END;
|
||||
|
||||
flush_cache((u32)packet, length);
|
||||
flush_cache((u32)tx_dp, sizeof(*tx_dp));
|
||||
|
||||
/* DMA start by writing to respective TAILDESC_PTR */
|
||||
ll_temac->out32(ra[TX_CURDESC_PTR], (int)tx_dp);
|
||||
ll_temac->out32(ra[TX_TAILDESC_PTR], (int)tx_dp);
|
||||
|
||||
/* Find next empty buffer descriptor, preparation for next iteration */
|
||||
tx_idx = (tx_idx + 1) % TX_BUF_CNT;
|
||||
tx_dp = &cdmac_bd.tx[tx_idx];
|
||||
|
||||
do {
|
||||
flush_cache((u32)tx_dp, sizeof(*tx_dp));
|
||||
udelay(1);
|
||||
} while (timeout-- && !(tx_dp->sca.stctrl & CDMAC_BD_STCTRL_COMPLETED));
|
||||
|
||||
if (!timeout) {
|
||||
printf("%s: Timeout\n", __func__);
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
281
drivers/net/xilinx_ll_temac_sdma.h
Normal file
281
drivers/net/xilinx_ll_temac_sdma.h
Normal file
|
|
@ -0,0 +1,281 @@
|
|||
/*
|
||||
* Xilinx xps_ll_temac ethernet driver for u-boot
|
||||
*
|
||||
* SDMA sub-controller interface
|
||||
*
|
||||
* Copyright (C) 2011 - 2012 Stephan Linz <linz@li-pro.net>
|
||||
* Copyright (C) 2008 - 2011 Michal Simek <monstr@monstr.eu>
|
||||
* Copyright (C) 2008 - 2011 PetaLogix
|
||||
*
|
||||
* Based on Yoshio Kashiwagi kashiwagi@co-nss.co.jp driver
|
||||
* Copyright (C) 2008 Nissin Systems Co.,Ltd.
|
||||
* March 2008 created
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* [0]: http://www.xilinx.com/support/documentation
|
||||
*
|
||||
* [S]: [0]/ip_documentation/xps_ll_temac.pdf
|
||||
* [A]: [0]/application_notes/xapp1041.pdf
|
||||
*/
|
||||
#ifndef _XILINX_LL_TEMAC_SDMA_
|
||||
#define _XILINX_LL_TEMAC_SDMA_
|
||||
|
||||
#include <net.h>
|
||||
|
||||
#include <asm/types.h>
|
||||
#include <asm/byteorder.h>
|
||||
|
||||
#include <linux/compiler.h>
|
||||
|
||||
#if !defined(__BIG_ENDIAN)
|
||||
# error LL_TEMAC requires big endianess
|
||||
#endif
|
||||
|
||||
/*
|
||||
* DMA Buffer Descriptor for CDMAC
|
||||
*
|
||||
* Used for data connection from and to (Rx/Tx) the LocalLink (LL) TEMAC via
|
||||
* the Communications Direct Memory Access Controller (CDMAC) -- one for each.
|
||||
*
|
||||
* overview:
|
||||
* ftp://ftp.xilinx.com/pub/documentation/misc/mpmc_getting_started.pdf
|
||||
*
|
||||
* [1]: [0]/ip_documentation/mpmc.pdf
|
||||
* page 140, DMA Operation Descriptors
|
||||
*
|
||||
* [2]: [0]/user_guides/ug200.pdf
|
||||
* page 229, DMA Controller -- Descriptor Format
|
||||
*
|
||||
* [3]: [0]/ip_documentation/xps_ll_temac.pdf
|
||||
* page 72, Transmit LocalLink Frame Format
|
||||
* page 73, Receive LocalLink Frame Format
|
||||
*/
|
||||
struct cdmac_bd {
|
||||
struct cdmac_bd *next_p; /* Next Descriptor Pointer */
|
||||
u8 *phys_buf_p; /* Buffer Address */
|
||||
u32 buf_len; /* Buffer Length */
|
||||
union {
|
||||
u8 stctrl; /* Status/Control the DMA transfer */
|
||||
u32 app[5]; /* application specific data */
|
||||
} __packed __aligned(1) sca;
|
||||
};
|
||||
|
||||
/* CDMAC Descriptor Status and Control (stctrl), [1] p140, [2] p230 */
|
||||
#define CDMAC_BD_STCTRL_ERROR (1 << 7)
|
||||
#define CDMAC_BD_STCTRL_IRQ_ON_END (1 << 6)
|
||||
#define CDMAC_BD_STCTRL_STOP_ON_END (1 << 5)
|
||||
#define CDMAC_BD_STCTRL_COMPLETED (1 << 4)
|
||||
#define CDMAC_BD_STCTRL_SOP (1 << 3)
|
||||
#define CDMAC_BD_STCTRL_EOP (1 << 2)
|
||||
#define CDMAC_BD_STCTRL_DMACHBUSY (1 << 1)
|
||||
|
||||
/* CDMAC Descriptor APP0: Transmit LocalLink Footer Word 3, [3] p72 */
|
||||
#define CDMAC_BD_APP0_TXCSCNTRL (1 << 0)
|
||||
|
||||
/* CDMAC Descriptor APP1: Transmit LocalLink Footer Word 4, [3] p73 */
|
||||
#define CDMAC_BD_APP1_TXCSBEGIN_POS 16
|
||||
#define CDMAC_BD_APP1_TXCSBEGIN_MASK (0xFFFF << CDMAC_BD_APP1_TXCSBEGIN_POS)
|
||||
#define CDMAC_BD_APP1_TXCSINSERT_POS 0
|
||||
#define CDMAC_BD_APP1_TXCSINSERT_MASK (0xFFFF << CDMAC_BD_APP1_TXCSINSERT_POS)
|
||||
|
||||
/* CDMAC Descriptor APP2: Transmit LocalLink Footer Word 5, [3] p73 */
|
||||
#define CDMAC_BD_APP2_TXCSINIT_POS 0
|
||||
#define CDMAC_BD_APP2_TXCSINIT_MASK (0xFFFF << CDMAC_BD_APP2_TXCSINIT_POS)
|
||||
|
||||
/* CDMAC Descriptor APP0: Receive LocalLink Footer Word 3, [3] p73 */
|
||||
#define CDMAC_BD_APP0_MADDRU_POS 0
|
||||
#define CDMAC_BD_APP0_MADDRU_MASK (0xFFFF << CDMAC_BD_APP0_MADDRU_POS)
|
||||
|
||||
/* CDMAC Descriptor APP1: Receive LocalLink Footer Word 4, [3] p74 */
|
||||
#define CDMAC_BD_APP1_MADDRL_POS 0
|
||||
#define CDMAC_BD_APP1_MADDRL_MASK (~0UL << CDMAC_BD_APP1_MADDRL_POS)
|
||||
|
||||
/* CDMAC Descriptor APP2: Receive LocalLink Footer Word 5, [3] p74 */
|
||||
#define CDMAC_BD_APP2_BCAST_FRAME (1 << 2)
|
||||
#define CDMAC_BD_APP2_IPC_MCAST_FRAME (1 << 1)
|
||||
#define CDMAC_BD_APP2_MAC_MCAST_FRAME (1 << 0)
|
||||
|
||||
/* CDMAC Descriptor APP3: Receive LocalLink Footer Word 6, [3] p74 */
|
||||
#define CDMAC_BD_APP3_TLTPID_POS 16
|
||||
#define CDMAC_BD_APP3_TLTPID_MASK (0xFFFF << CDMAC_BD_APP3_TLTPID_POS)
|
||||
#define CDMAC_BD_APP3_RXCSRAW_POS 0
|
||||
#define CDMAC_BD_APP3_RXCSRAW_MASK (0xFFFF << CDMAC_BD_APP3_RXCSRAW_POS)
|
||||
|
||||
/* CDMAC Descriptor APP4: Receive LocalLink Footer Word 7, [3] p74 */
|
||||
#define CDMAC_BD_APP4_VLANTAG_POS 16
|
||||
#define CDMAC_BD_APP4_VLANTAG_MASK (0xFFFF << CDMAC_BD_APP4_VLANTAG_POS)
|
||||
#define CDMAC_BD_APP4_RXBYTECNT_POS 0
|
||||
#define CDMAC_BD_APP4_RXBYTECNT_MASK (0x3FFF << CDMAC_BD_APP4_RXBYTECNT_POS)
|
||||
|
||||
/*
|
||||
* SDMA Register Definition
|
||||
*
|
||||
* [0]: http://www.xilinx.com/support/documentation
|
||||
*
|
||||
* [1]: [0]/ip_documentation/mpmc.pdf
|
||||
* page 54, SDMA Register Summary
|
||||
* page 160, SDMA Registers
|
||||
*
|
||||
* [2]: [0]/user_guides/ug200.pdf
|
||||
* page 244, DMA Controller -- Programming Interface and Registers
|
||||
*/
|
||||
#define SDMA_CTRL_REGTYPE u32
|
||||
#define SDMA_CTRL_REGSIZE sizeof(SDMA_CTRL_REGTYPE)
|
||||
struct sdma_ctrl {
|
||||
/* Transmit Registers */
|
||||
SDMA_CTRL_REGTYPE tx_nxtdesc_ptr; /* TX Next Description Pointer */
|
||||
SDMA_CTRL_REGTYPE tx_curbuf_addr; /* TX Current Buffer Address */
|
||||
SDMA_CTRL_REGTYPE tx_curbuf_length; /* TX Current Buffer Length */
|
||||
SDMA_CTRL_REGTYPE tx_curdesc_ptr; /* TX Current Descriptor Pointer */
|
||||
SDMA_CTRL_REGTYPE tx_taildesc_ptr; /* TX Tail Descriptor Pointer */
|
||||
SDMA_CTRL_REGTYPE tx_chnl_ctrl; /* TX Channel Control */
|
||||
SDMA_CTRL_REGTYPE tx_irq_reg; /* TX Interrupt Register */
|
||||
SDMA_CTRL_REGTYPE tx_chnl_sts; /* TX Status Register */
|
||||
/* Receive Registers */
|
||||
SDMA_CTRL_REGTYPE rx_nxtdesc_ptr; /* RX Next Descriptor Pointer */
|
||||
SDMA_CTRL_REGTYPE rx_curbuf_addr; /* RX Current Buffer Address */
|
||||
SDMA_CTRL_REGTYPE rx_curbuf_length; /* RX Current Buffer Length */
|
||||
SDMA_CTRL_REGTYPE rx_curdesc_ptr; /* RX Current Descriptor Pointer */
|
||||
SDMA_CTRL_REGTYPE rx_taildesc_ptr; /* RX Tail Descriptor Pointer */
|
||||
SDMA_CTRL_REGTYPE rx_chnl_ctrl; /* RX Channel Control */
|
||||
SDMA_CTRL_REGTYPE rx_irq_reg; /* RX Interrupt Register */
|
||||
SDMA_CTRL_REGTYPE rx_chnl_sts; /* RX Status Register */
|
||||
/* Control Registers */
|
||||
SDMA_CTRL_REGTYPE dma_control_reg; /* DMA Control Register */
|
||||
};
|
||||
|
||||
#define SDMA_CTRL_REGNUMS sizeof(struct sdma_ctrl)/SDMA_CTRL_REGSIZE
|
||||
|
||||
/*
|
||||
* DMAC Register Index Enumeration
|
||||
*
|
||||
* [2]: http://www.xilinx.com/support/documentation/user_guides/ug200.pdf
|
||||
* page 244, DMA Controller -- Programming Interface and Registers
|
||||
*/
|
||||
enum dmac_ctrl {
|
||||
/* Transmit Registers */
|
||||
TX_NXTDESC_PTR = 0, /* TX Next Description Pointer */
|
||||
TX_CURBUF_ADDR, /* TX Current Buffer Address */
|
||||
TX_CURBUF_LENGTH, /* TX Current Buffer Length */
|
||||
TX_CURDESC_PTR, /* TX Current Descriptor Pointer */
|
||||
TX_TAILDESC_PTR, /* TX Tail Descriptor Pointer */
|
||||
TX_CHNL_CTRL, /* TX Channel Control */
|
||||
TX_IRQ_REG, /* TX Interrupt Register */
|
||||
TX_CHNL_STS, /* TX Status Register */
|
||||
/* Receive Registers */
|
||||
RX_NXTDESC_PTR, /* RX Next Descriptor Pointer */
|
||||
RX_CURBUF_ADDR, /* RX Current Buffer Address */
|
||||
RX_CURBUF_LENGTH, /* RX Current Buffer Length */
|
||||
RX_CURDESC_PTR, /* RX Current Descriptor Pointer */
|
||||
RX_TAILDESC_PTR, /* RX Tail Descriptor Pointer */
|
||||
RX_CHNL_CTRL, /* RX Channel Control */
|
||||
RX_IRQ_REG, /* RX Interrupt Register */
|
||||
RX_CHNL_STS, /* RX Status Register */
|
||||
/* Control Registers */
|
||||
DMA_CONTROL_REG /* DMA Control Register */
|
||||
};
|
||||
|
||||
/* Rx/Tx Channel Control Register (*_chnl_ctrl), [1] p163, [2] p246/p252 */
|
||||
#define CHNL_CTRL_ITO_POS 24
|
||||
#define CHNL_CTRL_ITO_MASK (0xFF << CHNL_CTRL_ITO_POS)
|
||||
#define CHNL_CTRL_IC_POS 16
|
||||
#define CHNL_CTRL_IC_MASK (0xFF << CHNL_CTRL_IC_POS)
|
||||
#define CHNL_CTRL_MSBADDR_POS 12
|
||||
#define CHNL_CTRL_MSBADDR_MASK (0xF << CHNL_CTRL_MSBADDR_POS)
|
||||
#define CHNL_CTRL_AME (1 << 11)
|
||||
#define CHNL_CTRL_OBWC (1 << 10)
|
||||
#define CHNL_CTRL_IOE (1 << 9)
|
||||
#define CHNL_CTRL_LIC (1 << 8)
|
||||
#define CHNL_CTRL_IE (1 << 7)
|
||||
#define CHNL_CTRL_IEE (1 << 2)
|
||||
#define CHNL_CTRL_IDE (1 << 1)
|
||||
#define CHNL_CTRL_ICE (1 << 0)
|
||||
|
||||
/* All interrupt enable bits */
|
||||
#define CHNL_CTRL_IRQ_MASK (CHNL_CTRL_IE | \
|
||||
CHNL_CTRL_IEE | \
|
||||
CHNL_CTRL_IDE | \
|
||||
CHNL_CTRL_ICE)
|
||||
|
||||
/* Rx/Tx Interrupt Status Register (*_irq_reg), [1] p164, [2] p247/p253 */
|
||||
#define IRQ_REG_DTV_POS 24
|
||||
#define IRQ_REG_DTV_MASK (0xFF << IRQ_REG_DTV_POS)
|
||||
#define IRQ_REG_CCV_POS 16
|
||||
#define IRQ_REG_CCV_MASK (0xFF << IRQ_REG_CCV_POS)
|
||||
#define IRQ_REG_WRCQ_EMPTY (1 << 14)
|
||||
#define IRQ_REG_CIC_POS 10
|
||||
#define IRQ_REG_CIC_MASK (0xF << IRQ_REG_CIC_POS)
|
||||
#define IRQ_REG_DIC_POS 8
|
||||
#define IRQ_REG_DIC_MASK (3 << 8)
|
||||
#define IRQ_REG_PLB_RD_NMI (1 << 4)
|
||||
#define IRQ_REG_PLB_WR_NMI (1 << 3)
|
||||
#define IRQ_REG_EI (1 << 2)
|
||||
#define IRQ_REG_DI (1 << 1)
|
||||
#define IRQ_REG_CI (1 << 0)
|
||||
|
||||
/* All interrupt bits */
|
||||
#define IRQ_REG_IRQ_MASK (IRQ_REG_PLB_RD_NMI | \
|
||||
IRQ_REG_PLB_WR_NMI | \
|
||||
IRQ_REG_EI | IRQ_REG_DI | IRQ_REG_CI)
|
||||
|
||||
/* Rx/Tx Channel Status Register (*_chnl_sts), [1] p165, [2] p249/p255 */
|
||||
#define CHNL_STS_ERROR_TAIL (1 << 21)
|
||||
#define CHNL_STS_ERROR_CMP (1 << 20)
|
||||
#define CHNL_STS_ERROR_ADDR (1 << 19)
|
||||
#define CHNL_STS_ERROR_NXTP (1 << 18)
|
||||
#define CHNL_STS_ERROR_CURP (1 << 17)
|
||||
#define CHNL_STS_ERROR_BSYWR (1 << 16)
|
||||
#define CHNL_STS_ERROR (1 << 7)
|
||||
#define CHNL_STS_IOE (1 << 6)
|
||||
#define CHNL_STS_SOE (1 << 5)
|
||||
#define CHNL_STS_CMPLT (1 << 4)
|
||||
#define CHNL_STS_SOP (1 << 3)
|
||||
#define CHNL_STS_EOP (1 << 2)
|
||||
#define CHNL_STS_EBUSY (1 << 1)
|
||||
|
||||
/* DMA Control Register (dma_control_reg), [1] p166, [2] p256 */
|
||||
#define DMA_CONTROL_PLBED (1 << 5)
|
||||
#define DMA_CONTROL_RXOCEID (1 << 4)
|
||||
#define DMA_CONTROL_TXOCEID (1 << 3)
|
||||
#define DMA_CONTROL_TPE (1 << 2)
|
||||
#define DMA_CONTROL_RESET (1 << 0)
|
||||
|
||||
#if defined(CONFIG_XILINX_440) || defined(CONFIG_XILINX_405)
|
||||
|
||||
/* Xilinx Device Control Register (DCR) in/out accessors */
|
||||
unsigned ll_temac_xldcr_in32(phys_addr_t addr);
|
||||
void ll_temac_xldcr_out32(phys_addr_t addr, unsigned value);
|
||||
|
||||
/* collect all register addresses for Xilinx DCR in/out accessors */
|
||||
void ll_temac_collect_xldcr_sdma_reg_addr(struct eth_device *dev);
|
||||
|
||||
#endif /* CONFIG_XILINX_440 || CONFIG_XILINX_405 */
|
||||
|
||||
/* Xilinx Processor Local Bus (PLB) in/out accessors */
|
||||
unsigned ll_temac_xlplb_in32(phys_addr_t base);
|
||||
void ll_temac_xlplb_out32(phys_addr_t base, unsigned value);
|
||||
|
||||
/* collect all register addresses for Xilinx PLB in/out accessors */
|
||||
void ll_temac_collect_xlplb_sdma_reg_addr(struct eth_device *dev);
|
||||
|
||||
/* initialize both Rx/Tx buffer descriptors */
|
||||
int ll_temac_init_sdma(struct eth_device *dev);
|
||||
|
||||
/* halt both Rx/Tx transfers */
|
||||
int ll_temac_halt_sdma(struct eth_device *dev);
|
||||
|
||||
/* reset SDMA and IRQ, disable interrupts and errors */
|
||||
int ll_temac_reset_sdma(struct eth_device *dev);
|
||||
|
||||
/* receive buffered data from SDMA (polling ISR) */
|
||||
int ll_temac_recv_sdma(struct eth_device *dev);
|
||||
|
||||
/* send buffered data to SDMA */
|
||||
int ll_temac_send_sdma(struct eth_device *dev, volatile void *packet,
|
||||
int length);
|
||||
|
||||
#endif /* _XILINX_LL_TEMAC_SDMA_ */
|
||||
|
|
@ -102,6 +102,18 @@ int xilinx_axiemac_initialize(bd_t *bis, unsigned long base_addr,
|
|||
unsigned long dma_addr);
|
||||
int xilinx_emaclite_initialize(bd_t *bis, unsigned long base_addr,
|
||||
int txpp, int rxpp);
|
||||
int xilinx_ll_temac_eth_init(bd_t *bis, unsigned long base_addr, int flags,
|
||||
unsigned long ctrl_addr);
|
||||
|
||||
/*
|
||||
* As long as the Xilinx xps_ll_temac ethernet driver has not its own interface
|
||||
* exported by a public hader file, we need a global definition at this point.
|
||||
*/
|
||||
#if defined(CONFIG_XILINX_LL_TEMAC)
|
||||
#define XILINX_LL_TEMAC_M_FIFO 0 /* use FIFO Ctrl */
|
||||
#define XILINX_LL_TEMAC_M_SDMA_PLB (1 << 0)/* use SDMA Ctrl via PLB */
|
||||
#define XILINX_LL_TEMAC_M_SDMA_DCR (1 << 1)/* use SDMA Ctrl via DCR */
|
||||
#endif
|
||||
|
||||
/* Boards with PCI network controllers can call this from their board_eth_init()
|
||||
* function to initialize whatever's on board.
|
||||
|
|
|
|||
Loading…
Reference in a new issue