+++ /dev/null
-/*
- * (C) Copyright 2003
- * Author : Hamid Ikdoumi (Atmel)
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <at91rm9200_net.h>
-#include <net.h>
-#include <miiphy.h>
-#include <asm/mach-types.h>
-
-/* ----- Ethernet Buffer definitions ----- */
-
-typedef struct {
- unsigned long addr, size;
-} rbf_t;
-
-#define RBF_ADDR 0xfffffffc
-#define RBF_OWNER (1<<0)
-#define RBF_WRAP (1<<1)
-#define RBF_BROADCAST (1<<31)
-#define RBF_MULTICAST (1<<30)
-#define RBF_UNICAST (1<<29)
-#define RBF_EXTERNAL (1<<28)
-#define RBF_UNKOWN (1<<27)
-#define RBF_SIZE 0x07ff
-#define RBF_LOCAL4 (1<<26)
-#define RBF_LOCAL3 (1<<25)
-#define RBF_LOCAL2 (1<<24)
-#define RBF_LOCAL1 (1<<23)
-
-#define RBF_FRAMEMAX 64
-#define RBF_FRAMELEN 0x600
-
-#ifdef CONFIG_DRIVER_ETHER
-
-#if defined(CONFIG_CMD_NET)
-
-/* alignment as per Errata #11 (64 bytes) is insufficient! */
-rbf_t rbfdt[RBF_FRAMEMAX] __attribute__((aligned(512)));
-rbf_t *rbfp;
-
-unsigned char rbf_framebuf[RBF_FRAMEMAX][RBF_FRAMELEN]
- __attribute__((aligned(4)));
-
-/* structure to interface the PHY */
-AT91S_PhyOps PhyOps;
-
-AT91PS_EMAC p_mac;
-
-/*********** EMAC Phy layer Management functions *************************/
-/*
- * Name:
- * at91rm9200_EmacEnableMDIO
- * Description:
- * Enables the MDIO bit in MAC control register
- * Arguments:
- * p_mac - pointer to struct AT91S_EMAC
- * Return value:
- * none
- */
-void at91rm9200_EmacEnableMDIO (AT91PS_EMAC p_mac)
-{
- /* Mac CTRL reg set for MDIO enable */
- p_mac->EMAC_CTL |= AT91C_EMAC_MPE; /* Management port enable */
-}
-
-/*
- * Name:
- * at91rm9200_EmacDisableMDIO
- * Description:
- * Disables the MDIO bit in MAC control register
- * Arguments:
- * p_mac - pointer to struct AT91S_EMAC
- * Return value:
- * none
- */
-void at91rm9200_EmacDisableMDIO (AT91PS_EMAC p_mac)
-{
- /* Mac CTRL reg set for MDIO disable */
- p_mac->EMAC_CTL &= ~AT91C_EMAC_MPE; /* Management port disable */
-}
-
-
-/*
- * Name:
- * at91rm9200_EmacReadPhy
- * Description:
- * Reads data from the PHY register
- * Arguments:
- * dev - pointer to struct net_device
- * RegisterAddress - unsigned char
- * pInput - pointer to value read from register
- * Return value:
- * TRUE - if data read successfully
- */
-UCHAR at91rm9200_EmacReadPhy (AT91PS_EMAC p_mac,
- unsigned char RegisterAddress,
- unsigned short *pInput)
-{
- p_mac->EMAC_MAN = (AT91C_EMAC_HIGH & ~AT91C_EMAC_LOW) |
- (AT91C_EMAC_RW_R) |
- (RegisterAddress << 18) |
- (AT91C_EMAC_CODE_802_3);
-
- udelay (10000);
-
- *pInput = (unsigned short) p_mac->EMAC_MAN;
-
- return TRUE;
-}
-
-
-/*
- * Name:
- * at91rm9200_EmacWritePhy
- * Description:
- * Writes data to the PHY register
- * Arguments:
- * dev - pointer to struct net_device
- * RegisterAddress - unsigned char
- * pOutput - pointer to value to be written in the register
- * Return value:
- * TRUE - if data read successfully
- */
-UCHAR at91rm9200_EmacWritePhy (AT91PS_EMAC p_mac,
- unsigned char RegisterAddress,
- unsigned short *pOutput)
-{
- p_mac->EMAC_MAN = (AT91C_EMAC_HIGH & ~AT91C_EMAC_LOW) |
- AT91C_EMAC_CODE_802_3 | AT91C_EMAC_RW_W |
- (RegisterAddress << 18) | *pOutput;
-
- udelay (10000);
-
- return TRUE;
-}
-
-int eth_init (bd_t * bd)
-{
- int ret;
- int i;
- uchar enetaddr[6];
-
- p_mac = AT91C_BASE_EMAC;
-
- /* PIO Disable Register */
- *AT91C_PIOA_PDR = AT91C_PA16_EMDIO | AT91C_PA15_EMDC | AT91C_PA14_ERXER |
- AT91C_PA13_ERX1 | AT91C_PA12_ERX0 | AT91C_PA11_ECRS_ECRSDV |
- AT91C_PA10_ETX1 | AT91C_PA9_ETX0 | AT91C_PA8_ETXEN |
- AT91C_PA7_ETXCK_EREFCK;
-
-#ifdef CONFIG_AT91C_USE_RMII
- *AT91C_PIOB_PDR = AT91C_PB19_ERXCK;
- *AT91C_PIOB_BSR = AT91C_PB19_ERXCK;
-#else
- *AT91C_PIOB_PDR = AT91C_PB19_ERXCK | AT91C_PB18_ECOL | AT91C_PB17_ERXDV |
- AT91C_PB16_ERX3 | AT91C_PB15_ERX2 | AT91C_PB14_ETXER |
- AT91C_PB13_ETX3 | AT91C_PB12_ETX2;
-
- /* Select B Register */
- *AT91C_PIOB_BSR = AT91C_PB19_ERXCK | AT91C_PB18_ECOL |
- AT91C_PB17_ERXDV | AT91C_PB16_ERX3 | AT91C_PB15_ERX2 |
- AT91C_PB14_ETXER | AT91C_PB13_ETX3 | AT91C_PB12_ETX2;
-#endif
-
- *AT91C_PMC_PCER = 1 << AT91C_ID_EMAC; /* Peripheral Clock Enable Register */
-
- p_mac->EMAC_CFG |= AT91C_EMAC_CSR; /* Clear statistics */
-
- /* Init Ethernet buffers */
- for (i = 0; i < RBF_FRAMEMAX; i++) {
- rbfdt[i].addr = (unsigned long)rbf_framebuf[i];
- rbfdt[i].size = 0;
- }
- rbfdt[RBF_FRAMEMAX - 1].addr |= RBF_WRAP;
- rbfp = &rbfdt[0];
-
- eth_getenv_enetaddr("ethaddr", enetaddr);
-
- /* The CSB337 originally used a version of the MicroMonitor bootloader
- * which saved Ethernet addresses in the "wrong" order. Operating
- * systems (like Linux) know this, and apply a workaround. Replicate
- * that MicroMonitor behavior so we avoid needing to make such OS code
- * care about which bootloader was used.
- */
- if (machine_is_csb337()) {
- p_mac->EMAC_SA2H = (enetaddr[0] << 8) | (enetaddr[1]);
- p_mac->EMAC_SA2L = (enetaddr[2] << 24) | (enetaddr[3] << 16)
- | (enetaddr[4] << 8) | (enetaddr[5]);
- } else {
- p_mac->EMAC_SA2L = (enetaddr[3] << 24) | (enetaddr[2] << 16)
- | (enetaddr[1] << 8) | (enetaddr[0]);
- p_mac->EMAC_SA2H = (enetaddr[5] << 8) | (enetaddr[4]);
- }
-
- p_mac->EMAC_RBQP = (long) (&rbfdt[0]);
- p_mac->EMAC_RSR &= ~(AT91C_EMAC_RSR_OVR | AT91C_EMAC_REC | AT91C_EMAC_BNA);
-
- p_mac->EMAC_CFG = (p_mac->EMAC_CFG | AT91C_EMAC_CAF | AT91C_EMAC_NBC)
- & ~AT91C_EMAC_CLK;
-
-#ifdef CONFIG_AT91C_USE_RMII
- p_mac->EMAC_CFG |= AT91C_EMAC_RMII;
-#endif
-
-#if (AT91C_MASTER_CLOCK > 40000000)
- /* MDIO clock must not exceed 2.5 MHz, so enable MCK divider */
- p_mac->EMAC_CFG |= AT91C_EMAC_CLK_HCLK_64;
-#endif
-
- p_mac->EMAC_CTL |= AT91C_EMAC_TE | AT91C_EMAC_RE;
-
- at91rm9200_GetPhyInterface (& PhyOps);
-
- if (!PhyOps.IsPhyConnected (p_mac))
- printf ("PHY not connected!!\n\r");
-
- /* MII management start from here */
- if (!(p_mac->EMAC_SR & AT91C_EMAC_LINK)) {
- if (!(ret = PhyOps.Init (p_mac))) {
- printf ("MAC: error during MII initialization\n");
- return 0;
- }
- } else {
- printf ("No link\n\r");
- return 0;
- }
-
- return 0;
-}
-
-int eth_send (volatile void *packet, int length)
-{
- while (!(p_mac->EMAC_TSR & AT91C_EMAC_BNQ));
- p_mac->EMAC_TAR = (long) packet;
- p_mac->EMAC_TCR = length;
- while (p_mac->EMAC_TCR & 0x7ff);
- p_mac->EMAC_TSR |= AT91C_EMAC_COMP;
- return 0;
-}
-
-int eth_rx (void)
-{
- int size;
-
- if (!(rbfp->addr & RBF_OWNER))
- return 0;
-
- size = rbfp->size & RBF_SIZE;
- NetReceive ((volatile uchar *) (rbfp->addr & RBF_ADDR), size);
-
- rbfp->addr &= ~RBF_OWNER;
- if (rbfp->addr & RBF_WRAP)
- rbfp = &rbfdt[0];
- else
- rbfp++;
-
- p_mac->EMAC_RSR |= AT91C_EMAC_REC;
-
- return size;
-}
-
-void eth_halt (void)
-{
-};
-
-#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
-int at91rm9200_miiphy_read(char *devname, unsigned char addr,
- unsigned char reg, unsigned short * value)
-{
- at91rm9200_EmacEnableMDIO (p_mac);
- at91rm9200_EmacReadPhy (p_mac, reg, value);
- at91rm9200_EmacDisableMDIO (p_mac);
- return 0;
-}
-
-int at91rm9200_miiphy_write(char *devname, unsigned char addr,
- unsigned char reg, unsigned short value)
-{
- at91rm9200_EmacEnableMDIO (p_mac);
- at91rm9200_EmacWritePhy (p_mac, reg, &value);
- at91rm9200_EmacDisableMDIO (p_mac);
- return 0;
-}
-
-#endif
-
-int at91rm9200_miiphy_initialize(bd_t *bis)
-{
-#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
- miiphy_register("at91rm9200phy", at91rm9200_miiphy_read, at91rm9200_miiphy_write);
-#endif
- return 0;
-}
-
-#endif
-
-#endif /* CONFIG_DRIVER_ETHER */
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