[U-Boot] [PATCH 2/4] net: Adds Fast Ethernet Controller driver for Armada100
Ajay Bhargav
ajay.bhargav at einfochips.com
Mon Jul 18 11:41:46 CEST 2011
This patch adds support for Fast Ethernet Controller driver for
Armada100 series.
Signed-off-by: Ajay Bhargav <ajay.bhargav at einfochips.com>
---
arch/arm/include/asm/arch-armada100/armada100.h | 1 +
drivers/net/Makefile | 1 +
drivers/net/armada100_fec.c | 816 +++++++++++++++++++++++
drivers/net/armada100_fec.h | 227 +++++++
include/netdev.h | 1 +
5 files changed, 1046 insertions(+), 0 deletions(-)
create mode 100644 drivers/net/armada100_fec.c
create mode 100644 drivers/net/armada100_fec.h
diff --git a/arch/arm/include/asm/arch-armada100/armada100.h b/arch/arm/include/asm/arch-armada100/armada100.h
index d5d125a..3d567eb 100644
--- a/arch/arm/include/asm/arch-armada100/armada100.h
+++ b/arch/arm/include/asm/arch-armada100/armada100.h
@@ -59,6 +59,7 @@
#define ARMD1_MPMU_BASE 0xD4050000
#define ARMD1_APMU_BASE 0xD4282800
#define ARMD1_CPU_BASE 0xD4282C00
+#define ARMD1_FEC_BASE 0xC0800000
/*
* Main Power Management (MPMU) Registers
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 819b197..34b4322 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -28,6 +28,7 @@ LIB := $(obj)libnet.o
COBJS-$(CONFIG_DRIVER_3C589) += 3c589.o
COBJS-$(CONFIG_PPC4xx_EMAC) += 4xx_enet.o
COBJS-$(CONFIG_ALTERA_TSE) += altera_tse.o
+COBJS-$(CONFIG_ARMADA100_FEC) += armada100_fec.o
COBJS-$(CONFIG_DRIVER_AT91EMAC) += at91_emac.o
COBJS-$(CONFIG_DRIVER_AX88180) += ax88180.o
COBJS-$(CONFIG_BCM570x) += bcm570x.o
diff --git a/drivers/net/armada100_fec.c b/drivers/net/armada100_fec.c
new file mode 100644
index 0000000..bf823d2
--- /dev/null
+++ b/drivers/net/armada100_fec.c
@@ -0,0 +1,816 @@
+/*
+ * (C) Copyright 2011
+ * eInfochips Ltd. <www.einfochips.com>
+ * Written-by: Ajay Bhargav <ajay.bhargav at einfochips.com>
+ *
+ * (C) Copyright 2010
+ * Marvell Semiconductor <www.marvell.com>
+ * Contributor: Mahavir Jain <mjain at marvell.com>
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <common.h>
+#include <net.h>
+#include <malloc.h>
+#include <miiphy.h>
+#include <netdev.h>
+#include <asm/types.h>
+#include <asm/byteorder.h>
+#include <linux/err.h>
+#include <linux/mii.h>
+#include <asm/io.h>
+#include <asm/arch/armada100.h>
+#include "armada100_fec.h"
+
+#define PHY_ADR_REQ 0xFF /* Magic number to read/write PHY address */
+
+#ifdef ETH_DUMP_REGS
+static int eth_dump_regs(struct eth_device *dev)
+{
+ struct armdfec_device *darmdfec = to_darmdfec(dev);
+ struct armdfec_reg *regs = darmdfec->regs;
+ unsigned int i = 0;
+
+ printf("\noffset: phy_adr, value: 0x%x\n", ARMDFEC_RD(regs->phyadr));
+ printf("offset: smi, value: 0x%x\n", ARMDFEC_RD(regs->smi));
+ for (i = 0x400; i <= 0x4e4; i += 4)
+ printf("offset: 0x%x, value: 0x%x\n",
+ i, readl(ARMD1_FEC_BASE + i));
+ return 0;
+}
+#endif
+
+static u8 get_random_byte(u8 seed)
+{
+ udelay(seed);
+ return (u8)(get_timer(0) % 100) + seed;
+}
+
+static int smi_reg_read(const char *devname, u8 phy_addr, u8 phy_reg,
+ u16 *value)
+{
+ struct eth_device *dev = eth_get_dev_by_name(devname);
+ struct armdfec_device *darmdfec = to_darmdfec(dev);
+ struct armdfec_reg *regs = darmdfec->regs;
+ u32 val, reg_data;
+ int i = 0;
+
+ if (phy_addr == PHY_ADR_REQ && phy_reg == PHY_ADR_REQ) {
+ reg_data = ARMDFEC_RD(regs->phyadr);
+ *value = (u16) (reg_data & 0x1f);
+ return 0;
+ }
+
+ /* check parameters */
+ if (phy_addr > PHY_MASK) {
+ printf("Err..(%s) Invalid phy address\n", __func__);
+ return -EINVAL;
+ }
+ if (phy_reg > PHY_MASK) {
+ printf("Err..(%s) Invalid register offset\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ /* wait for the SMI register to become available */
+ for (i = 0; (val = ARMDFEC_RD(regs->smi)) & SMI_BUSY; i++) {
+
+ if (i == PHY_WAIT_ITERATIONS) {
+ printf("Error (%s) PHY busy timeout\n",
+ __func__);
+ return -1;
+ }
+ udelay(PHY_WAIT_MICRO_SECONDS);
+ }
+
+ ARMDFEC_WR(((phy_addr << 16) | (phy_reg << 21) | SMI_OP_R), regs->smi);
+
+ /* now wait for the data to be valid */
+ for (i = 0; !((val = ARMDFEC_RD(regs->smi)) & SMI_R_VALID); i++) {
+ if (i == PHY_WAIT_ITERATIONS) {
+ printf("Error (%s) PHY Read timeout, val=0x%x\n",
+ __func__, val);
+ return -1;
+ }
+ udelay(PHY_WAIT_MICRO_SECONDS);
+ }
+ *value = val & 0xffff;
+ debug("%s:(adr 0x%x, off 0x%x) value= %04x\n", __func__,
+ phy_addr, phy_reg, *value);
+
+ return 0;
+}
+
+static int smi_reg_write(const char *devname,
+ u8 phy_addr, u8 phy_reg, u16 value)
+{
+ struct eth_device *dev = eth_get_dev_by_name(devname);
+ struct armdfec_device *darmdfec = to_darmdfec(dev);
+ struct armdfec_reg *regs = darmdfec->regs;
+ u32 reg_data;
+ int i;
+
+ if (phy_addr == PHY_ADR_REQ && phy_reg == PHY_ADR_REQ) {
+ reg_data = ARMDFEC_RD(regs->phyadr);
+ reg_data &= ~(0x1f);
+ reg_data |= (value & 0x1f);
+ ARMDFEC_WR(reg_data, regs->phyadr);
+ return 0;
+ }
+
+ /* check parameters */
+ if (phy_addr > PHY_MASK) {
+ printf("Err..(%s) Invalid phy address\n", __func__);
+ return -EINVAL;
+ }
+ if (phy_reg > PHY_MASK) {
+ printf("Err..(%s) Invalid register offset\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ /* wait for the SMI register to become available */
+ for (i = 0; ARMDFEC_RD(regs->smi) & SMI_BUSY; i++) {
+ if (i == PHY_WAIT_ITERATIONS) {
+ printf("Error (%s) PHY busy timeout\n",
+ __func__);
+ return -1;
+ }
+ udelay(PHY_WAIT_MICRO_SECONDS);
+ }
+
+ ARMDFEC_WR(((phy_addr << 16) | (phy_reg << 21) | SMI_OP_W |
+ (value & 0xffff)), regs->smi);
+ debug("%s:(adr 0x%x, off 0x%x) value= %04x\n", __func__,
+ phy_addr, phy_reg, value);
+ return 0;
+}
+
+/* Abort any transmit and receive operations and put DMA
+ * in idle state. AT and AR bits are cleared upon entering
+ * in IDLE state. So poll those bits to verify operation.
+ */
+static void abortDMA(struct eth_device *dev)
+{
+ struct armdfec_device *darmdfec = to_darmdfec(dev);
+ struct armdfec_reg *regs = darmdfec->regs;
+ int delay;
+ int maxRetries = 40;
+
+ do {
+ ARMDFEC_WR(SDMA_CMD_AR | SDMA_CMD_AT, regs->sdma_cmd);
+ udelay(100);
+
+ delay = 10;
+ while ((ARMDFEC_RD(regs->sdma_cmd) &
+ (SDMA_CMD_AR | SDMA_CMD_AT))
+ && delay-- > 0) {
+ udelay(10);
+ }
+ } while (maxRetries-- > 0 && delay <= 0);
+
+ if (maxRetries <= 0)
+ printf("%s : DMA Stuck\n", __func__);
+}
+
+static inline u32 nibble_swapping_32_bit(u32 x)
+{
+ return (((x) & 0xf0f0f0f0) >> 4) | (((x) & 0x0f0f0f0f) << 4);
+}
+
+static inline u32 nibble_swapping_16_bit(u32 x)
+{
+ return (((x) & 0x0000f0f0) >> 4) | (((x) & 0x00000f0f) << 4);
+}
+
+static inline u32 flip_4_bits(u32 x)
+{
+ return (((x) & 0x01) << 3) | (((x) & 0x002) << 1)
+ | (((x) & 0x04) >> 1) | (((x) & 0x008) >> 3);
+}
+
+/*
+ * ----------------------------------------------------------------------------
+ * This function will calculate the hash function of the address.
+ * depends on the hash mode and hash size.
+ * Inputs
+ * macH - the 2 most significant bytes of the MAC address.
+ * macL - the 4 least significant bytes of the MAC address.
+ * Outputs
+ * return the calculated entry.
+ */
+static u32 hash_function(u32 macH, u32 macL)
+{
+ u32 hashResult;
+ u32 addrH;
+ u32 addrL;
+ u32 addr0;
+ u32 addr1;
+ u32 addr2;
+ u32 addr3;
+ u32 addrHSwapped;
+ u32 addrLSwapped;
+
+ addrH = nibble_swapping_16_bit(macH);
+ addrL = nibble_swapping_32_bit(macL);
+
+ addrHSwapped = flip_4_bits(addrH & 0xf)
+ + ((flip_4_bits((addrH >> 4) & 0xf)) << 4)
+ + ((flip_4_bits((addrH >> 8) & 0xf)) << 8)
+ + ((flip_4_bits((addrH >> 12) & 0xf)) << 12);
+
+ addrLSwapped = flip_4_bits(addrL & 0xf)
+ + ((flip_4_bits((addrL >> 4) & 0xf)) << 4)
+ + ((flip_4_bits((addrL >> 8) & 0xf)) << 8)
+ + ((flip_4_bits((addrL >> 12) & 0xf)) << 12)
+ + ((flip_4_bits((addrL >> 16) & 0xf)) << 16)
+ + ((flip_4_bits((addrL >> 20) & 0xf)) << 20)
+ + ((flip_4_bits((addrL >> 24) & 0xf)) << 24)
+ + ((flip_4_bits((addrL >> 28) & 0xf)) << 28);
+
+ addrH = addrHSwapped;
+ addrL = addrLSwapped;
+
+ addr0 = (addrL >> 2) & 0x03f;
+ addr1 = (addrL & 0x003) | ((addrL >> 8) & 0x7f) << 2;
+ addr2 = (addrL >> 15) & 0x1ff;
+ addr3 = ((addrL >> 24) & 0x0ff) | ((addrH & 1) << 8);
+
+ hashResult = (addr0 << 9) | (addr1 ^ addr2 ^ addr3);
+ hashResult = hashResult & 0x07ff;
+ return hashResult;
+}
+
+/*
+ * ----------------------------------------------------------------------------
+ * This function will add an entry to the address table.
+ * depends on the hash mode and hash size that was initialized.
+ * Inputs
+ * macH - the 2 most significant bytes of the MAC address.
+ * macL - the 4 least significant bytes of the MAC address.
+ * skip - if 1, skip this address.
+ * rd - the RD field in the address table.
+ * Outputs
+ * address table entry is added.
+ * 0 if success.
+ * -ENOSPC if table full
+ */
+static int add_del_hash_entry(struct armdfec_device *darmdfec, u32 macH,
+ u32 macL, u32 rd, u32 skip, int del)
+{
+ struct addr_table_entry_t *entry, *start;
+ u32 newHi;
+ u32 newLo;
+ u32 i;
+ u8 *last;
+
+ newLo = (((macH >> 4) & 0xf) << 15)
+ | (((macH >> 0) & 0xf) << 11)
+ | (((macH >> 12) & 0xf) << 7)
+ | (((macH >> 8) & 0xf) << 3)
+ | (((macL >> 20) & 0x1) << 31)
+ | (((macL >> 16) & 0xf) << 27)
+ | (((macL >> 28) & 0xf) << 23)
+ | (((macL >> 24) & 0xf) << 19)
+ | (skip << hteSkip) | (rd << hteRDBit)
+ | hteValid;
+
+ newHi = (((macL >> 4) & 0xf) << 15)
+ | (((macL >> 0) & 0xf) << 11)
+ | (((macL >> 12) & 0xf) << 7)
+ | (((macL >> 8) & 0xf) << 3)
+ | (((macL >> 21) & 0x7) << 0);
+
+ /*
+ * Pick the appropriate table, start scanning for free/reusable
+ * entries at the index obtained by hashing the specified MAC address
+ */
+ start = (struct addr_table_entry_t *) (darmdfec->htpr);
+ entry = start + hash_function(macH, macL);
+ for (i = 0; i < HOP_NUMBER; i++) {
+ if (!(entry->lo & hteValid)) {
+ break;
+ } else {
+ /* if same address put in same position */
+ if (((entry->lo & 0xfffffff8) ==
+ (newLo & 0xfffffff8))
+ && (entry->hi == newHi)) {
+ break;
+ }
+ }
+ if (entry == start + 0x7ff)
+ entry = start;
+ else
+ entry++;
+ }
+
+ if (((entry->lo & 0xfffffff8) != (newLo & 0xfffffff8)) &&
+ (entry->hi != newHi) && del)
+ return 0;
+
+ if (i == HOP_NUMBER) {
+ if (!del) {
+ printf("%s: table section is full\n", __FILE__);
+ return -ENOSPC;
+ } else {
+ return 0;
+ }
+ }
+
+ /*
+ * Update the selected entry
+ */
+ if (del) {
+ entry->hi = 0;
+ entry->lo = 0;
+ } else {
+ entry->hi = newHi;
+ entry->lo = newLo;
+ }
+
+ last = (u8 *) entry;
+ last = last + sizeof(*entry);
+
+ return 0;
+}
+
+/*
+ * ----------------------------------------------------------------------------
+ * Create an addressTable entry from MAC address info
+ * found in the specifed net_device struct
+ *
+ * Input : pointer to ethernet interface network device structure
+ * Output : N/A
+ */
+static void update_hash_table_mac_address(struct armdfec_device *darmdfec,
+ u8 *oaddr, u8 *addr)
+{
+ u32 macH;
+ u32 macL;
+
+ /* Delete old entry */
+ if (oaddr) {
+ macH = (oaddr[0] << 8) | oaddr[1];
+ macL = (oaddr[2] << 24) | (oaddr[3] << 16) |
+ (oaddr[4] << 8) | oaddr[5];
+ add_del_hash_entry(darmdfec, macH, macL, 1, 0, HASH_DELETE);
+ }
+
+ /* Add new entry */
+ macH = (addr[0] << 8) | addr[1];
+ macL = (addr[2] << 24) | (addr[3] << 16) | (addr[4] << 8) | addr[5];
+ add_del_hash_entry(darmdfec, macH, macL, 1, 0, HASH_ADD);
+}
+
+/* Address Table Initialization */
+static void init_hashtable(struct eth_device *dev)
+{
+ struct armdfec_device *darmdfec = to_darmdfec(dev);
+ struct armdfec_reg *regs = darmdfec->regs;
+ memset(darmdfec->htpr, 0, HASH_ADDR_TABLE_SIZE);
+ ARMDFEC_WR((u32) darmdfec->htpr, regs->htpr);
+}
+
+static int setPortConfigExt(struct eth_device *dev, int mtu)
+{
+ struct armdfec_device *darmdfec = to_darmdfec(dev);
+ struct armdfec_reg *regs = darmdfec->regs;
+ int mtuSize;
+
+ /* 64 should work but does not -- dhcp packets NEVER get transmitted. */
+ if ((mtu > MAX_PKT_SIZE) || (mtu < 64))
+ return -EINVAL;
+
+ /* add source/dest mac addr (12) + pid (2) + crc (4) */
+ mtu += ETH_EXTRA_HEADER;
+ if (mtu <= 1518)
+ mtuSize = PCXR_MFL_1518;
+ else if (mtu <= 1536)
+ mtuSize = PCXR_MFL_1536;
+ else if (mtu <= 2048)
+ mtuSize = PCXR_MFL_2048;
+ else
+ mtuSize = PCXR_MFL_64K;
+
+ /* Extended Port Configuration */
+ ARMDFEC_WR(PCXR_2BSM | /* Two byte suffix aligns IP hdr */
+ PCXR_DSCP_EN | /* Enable DSCP in IP */
+ mtuSize | PCXR_FLP | /* do not force link pass */
+ PCXR_TX_HIGH_PRI, /* Transmit - high priority queue */
+ regs->pconf_ext);
+
+ /* subtract source/dest mac addr (12) + pid (2) + crc (4) */
+ mtu -= ETH_EXTRA_HEADER;
+ return 0;
+}
+
+/* This detects PHY chip from address 0-31 by reading PHY status
+ * registers. PHY chip can be connected at any of this address.
+ */
+static int ethernet_phy_detect(struct eth_device *dev)
+{
+ u32 val;
+ u16 tmp, mii_status;
+ u8 addr;
+
+ for (addr = 0; addr < 32; addr++) {
+ if (miiphy_read(dev->name, addr, MII_BMSR, &mii_status)
+ != 0)
+ /* try next phy */
+ continue;
+
+ /* invalid MII status. More validation required here... */
+ if (mii_status == 0 || mii_status == 0xffff)
+ /* try next phy */
+ continue;
+
+ if (miiphy_read(dev->name, addr, MII_PHYSID1, &tmp) != 0)
+ /* try next phy */
+ continue;
+
+ val = tmp << 16;
+ if (miiphy_read(dev->name, addr, MII_PHYSID2, &tmp) != 0)
+ /* try next phy */
+ continue;
+
+ val |= tmp;
+
+ if ((val & 0xfffffff0) != 0)
+ return addr;
+ }
+ return -1;
+}
+
+static void armdfec_init_rx_desc_ring(struct armdfec_device *darmdfec)
+{
+ struct rx_desc *p_rx_desc;
+ int i;
+
+ /* initialize the Rx descriptors ring */
+ p_rx_desc = darmdfec->p_rxdesc;
+ for (i = 0; i < RINGSZ; i++) {
+ p_rx_desc->cmd_sts = BUF_OWNED_BY_DMA | RX_EN_INT;
+ p_rx_desc->buf_size = PKTSIZE_ALIGN;
+ p_rx_desc->byte_cnt = 0;
+ p_rx_desc->buf_ptr = darmdfec->p_rxbuf + i * PKTSIZE_ALIGN;
+ if (i == (RINGSZ - 1))
+ p_rx_desc->nxtdesc_p = darmdfec->p_rxdesc;
+ else {
+ p_rx_desc->nxtdesc_p = (struct rx_desc *)
+ ((u32) p_rx_desc + ARMDFEC_RXQ_DESC_ALIGNED_SIZE);
+ p_rx_desc = p_rx_desc->nxtdesc_p;
+ }
+ }
+ darmdfec->p_rxdesc_curr = darmdfec->p_rxdesc;
+}
+
+static int armdfec_init(struct eth_device *dev)
+{
+ struct armdfec_device *darmdfec = to_darmdfec(dev);
+ struct armdfec_reg *regs = darmdfec->regs;
+ u32 val;
+
+ armdfec_init_rx_desc_ring(darmdfec);
+
+ /* Disable interrupts */
+ ARMDFEC_WR(0, regs->im);
+ ARMDFEC_WR(0, regs->ic);
+ /* Write to ICR to clear interrupts. */
+ ARMDFEC_WR(0, regs->iwc);
+
+ /*Abort any transmit and receive operations and put DMA
+ *in idle state.
+ */
+ abortDMA(dev);
+
+ /* Initialize address hash table */
+ init_hashtable(dev);
+
+ /* SDMA configuration */
+ ARMDFEC_WR(SDCR_BSZ8 | /* Burst size = 32 bytes */
+ SDCR_RIFB | /* Rx interrupt on frame */
+ SDCR_BLMT | /* Little endian transmit */
+ SDCR_BLMR | /* Little endian receive */
+ SDCR_RC_MAX_RETRANS, /* Max retransmit count */
+ regs->sdma_conf);
+ /* Port Configuration */
+ ARMDFEC_WR(PCR_HS, regs->pconf); /* Hash size is 1/2kb */
+ setPortConfigExt(dev, 1500);
+
+ update_hash_table_mac_address(darmdfec, dev->enetaddr, dev->enetaddr);
+
+ /* Update TX and RX queue descriptor register */
+ ARMDFEC_WR((u32) darmdfec->p_txdesc, regs->txcdp[TXQ]);
+ ARMDFEC_WR((u32) darmdfec->p_rxdesc, regs->rxfdp[RXQ]);
+ ARMDFEC_WR((u32) darmdfec->p_rxdesc_curr, regs->rxcdp[RXQ]);
+
+ /* Enable Interrupts */
+ ARMDFEC_WR(ALL_INTS, regs->im);
+
+ /* Enable Ethernet Port */
+ val = ARMDFEC_RD(regs->pconf);
+ val |= PCR_EN;
+ ARMDFEC_WR(val, regs->pconf);
+
+ /* Enable RX DMA engine */
+ val = ARMDFEC_RD(regs->sdma_cmd);
+ val |= SDMA_CMD_ERD;
+ ARMDFEC_WR(val, regs->sdma_cmd);
+
+#ifdef ETH_DUMP_REGS
+ eth_dump_regs(dev);
+#endif
+
+#if (defined(CONFIG_MII) || defined(CONFIG_CMD_MII)) \
+ && defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN)
+ /* Wait up to 5s for the link status */
+ for (i = 0; i < 5; i++) {
+ u16 phy_adr;
+
+ miiphy_read(dev->name, 0xFF, 0xFF, &phy_adr);
+ /* Return if we get link up */
+ if (miiphy_link(dev->name, phy_adr))
+ return 0;
+ udelay(1000000);
+ }
+
+ printf("No link on %s\n", dev->name);
+ return -1;
+#endif
+ return 0;
+}
+
+static int armdfec_halt(struct eth_device *dev)
+{
+ struct armdfec_device *darmdfec = to_darmdfec(dev);
+ struct armdfec_reg *regs = darmdfec->regs;
+ u32 val;
+ /* Stop RX DMA */
+ val = ARMDFEC_RD(regs->sdma_cmd);
+ val &= ~SDMA_CMD_ERD;
+ ARMDFEC_WR(val, regs->sdma_cmd);
+
+ /* Abort any transmit and receive operations and put DMA
+ * in idle state.
+ */
+ abortDMA(dev);
+
+ /* Disable interrupts */
+ ARMDFEC_WR(0, regs->im);
+ ARMDFEC_WR(0, regs->ic);
+ ARMDFEC_WR(0, regs->iwc);
+
+ /* Disable Port */
+ val = ARMDFEC_RD(regs->pconf);
+ val &= ~PCR_EN;
+ ARMDFEC_WR(val, regs->pconf);
+
+ return 0;
+}
+
+static int armdfec_send(struct eth_device *dev, void *dataptr,
+ int datasize)
+{
+ struct armdfec_device *darmdfec = to_darmdfec(dev);
+ struct armdfec_reg *regs = darmdfec->regs;
+ struct tx_desc *p_txdesc = darmdfec->p_txdesc;
+ void *p = (void *) dataptr;
+ int retry = 10000;
+ u32 cmd_sts;
+
+ /* Copy buffer if it's misaligned */
+ if ((u32) dataptr & 0x07) {
+ if (datasize > PKTSIZE_ALIGN) {
+ printf("Non-aligned data too large (%d)\n",
+ datasize);
+ return -1;
+ }
+
+ memcpy(darmdfec->p_aligned_txbuf, p, datasize);
+ p = darmdfec->p_aligned_txbuf;
+ }
+
+ p_txdesc->cmd_sts = TX_ZERO_PADDING | TX_GEN_CRC;
+ p_txdesc->cmd_sts |= TX_FIRST_DESC | TX_LAST_DESC;
+ p_txdesc->cmd_sts |= BUF_OWNED_BY_DMA;
+ p_txdesc->cmd_sts |= TX_EN_INT;
+ p_txdesc->buf_ptr = (u8 *) p;
+ p_txdesc->byte_cnt = datasize;
+
+ /* Apply send command using high priority TX queue */
+ ARMDFEC_WR((u32) p_txdesc, regs->txcdp[TXQ]);
+ ARMDFEC_WR(SDMA_CMD_TXDL | SDMA_CMD_TXDH | SDMA_CMD_ERD,
+ regs->sdma_cmd);
+
+ /*
+ * wait for packet xmit completion
+ */
+ cmd_sts = readl(&p_txdesc->cmd_sts);
+ while (cmd_sts & BUF_OWNED_BY_DMA) {
+ /* return fail if error is detected */
+ if ((cmd_sts & (TX_ERROR | TX_LAST_DESC)) ==
+ (TX_ERROR | TX_LAST_DESC)) {
+ printf("Err..(%s) in xmit packet\n", __func__);
+ return -1;
+ }
+ cmd_sts = readl(&p_txdesc->cmd_sts);
+ if (!(retry--)) {
+ printf("%s: xmit packet timeout!\n", __func__);
+ return -1;
+ }
+ };
+
+ return 0;
+}
+
+static int armdfec_recv(struct eth_device *dev)
+{
+ struct armdfec_device *darmdfec = to_darmdfec(dev);
+ struct rx_desc *p_rxdesc_curr = darmdfec->p_rxdesc_curr;
+ u32 cmd_sts;
+ u32 timeout = 0;
+
+ /* wait untill rx packet available or timeout */
+ do {
+ if (timeout <
+ (PHY_WAIT_ITERATIONS * PHY_WAIT_MICRO_SECONDS))
+ timeout++;
+ else {
+ debug("%s time out...\n", __func__);
+ return -1;
+ }
+ } while (readl(&p_rxdesc_curr->cmd_sts) & BUF_OWNED_BY_DMA);
+
+ if (p_rxdesc_curr->byte_cnt != 0) {
+ debug
+ ("%s: Received %d byte Packet @ 0x%x (cmd_sts= %08x)\n",
+ __func__, (u32) p_rxdesc_curr->byte_cnt,
+ (u32) p_rxdesc_curr->buf_ptr,
+ (u32) p_rxdesc_curr->cmd_sts);
+ }
+
+ /*
+ * In case received a packet without first/last bits on
+ * OR the error summary bit is on,
+ * the packets needs to be dropeed.
+ */
+ cmd_sts = readl(&p_rxdesc_curr->cmd_sts);
+
+ if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC))
+ != (RX_FIRST_DESC | RX_LAST_DESC)) {
+
+ printf("Err..(%s) Dropping packet spread on"
+ " multiple descriptors\n", __func__);
+
+ } else if (cmd_sts & RX_ERROR) {
+
+ printf("Err..(%s) Dropping packet with errors\n",
+ __func__);
+
+ } else {
+ /* !!! call higher layer processing */
+ debug("%s: Sending Received packet to"
+ " upper layer (NetReceive)\n", __func__);
+
+ /* let the upper layer handle the packet, subtract offset
+ * as two dummy bytes are added in received buffer see
+ * PORT_CONFIG_EXT register bit TWO_Byte_Stuff_Mode bit.
+ */
+ NetReceive((p_rxdesc_curr->buf_ptr + RX_BUF_OFFSET),
+ (int) (p_rxdesc_curr->byte_cnt -
+ RX_BUF_OFFSET));
+ }
+ /*
+ * free these descriptors and point next in the ring
+ */
+ p_rxdesc_curr->cmd_sts = BUF_OWNED_BY_DMA | RX_EN_INT;
+ p_rxdesc_curr->buf_size = PKTSIZE_ALIGN;
+ p_rxdesc_curr->byte_cnt = 0;
+
+ writel((unsigned int) p_rxdesc_curr->nxtdesc_p,
+ &(darmdfec->p_rxdesc_curr));
+
+ return 0;
+}
+
+int armada100_fec_initialize()
+{
+ struct armdfec_device *darmdfec;
+ struct eth_device *dev;
+ int phy_adr;
+ char *s = "ethaddr";
+
+ darmdfec = malloc(sizeof(struct armdfec_device));
+ if (!darmdfec)
+ goto error1;
+
+ memset(darmdfec, 0, sizeof(struct armdfec_device));
+
+ darmdfec->htpr = memalign(8, HASH_ADDR_TABLE_SIZE);
+ if (!darmdfec->htpr)
+ goto error2;
+
+ darmdfec->p_rxdesc =
+ (struct rx_desc *) memalign(PKTALIGN,
+ ARMDFEC_RXQ_DESC_ALIGNED_SIZE
+ * RINGSZ + 1);
+ if (!darmdfec->p_rxdesc)
+ goto error3;
+
+ darmdfec->p_rxbuf = (u8 *) memalign(PKTALIGN, RINGSZ
+ * PKTSIZE_ALIGN + 1);
+ if (!darmdfec->p_rxbuf)
+ goto error4;
+
+ darmdfec->p_aligned_txbuf = memalign(8, PKTSIZE_ALIGN);
+ if (!darmdfec->p_aligned_txbuf)
+ goto error5;
+
+ darmdfec->p_txdesc = (struct tx_desc *)
+ memalign(PKTALIGN, sizeof(struct tx_desc) + 1);
+ if (!darmdfec->p_txdesc) {
+ free(darmdfec->p_aligned_txbuf);
+error5:
+ free(darmdfec->p_rxbuf);
+error4:
+ free(darmdfec->p_rxdesc);
+error3:
+ free(darmdfec->htpr);
+error2:
+ free(darmdfec);
+error1:
+ printf("Err.. %s Failed to allocate memory\n",
+ __func__);
+ return -1;
+ }
+
+ dev = &darmdfec->dev;
+ /* Assign ARMADA100 Fast Ethernet Controller Base Address */
+ darmdfec->regs = (void *) ARMD1_FEC_BASE;
+
+ /* must be less than NAMESIZE (16) */
+ strcpy(dev->name, "armd-fec0");
+
+ while (!eth_getenv_enetaddr(s, dev->enetaddr)) {
+ /* Generate Private MAC addr if not set */
+ dev->enetaddr[0] = 0x00;
+ dev->enetaddr[1] = 0x50;
+ dev->enetaddr[2] = 0x43;
+#if defined(CONFIG_SKIP_LOCAL_MAC_RANDOMIZATION)
+ /* Generate fixed lower MAC half */
+ dev->enetaddr[3] = 0x11;
+ dev->enetaddr[4] = 0x22;
+ dev->enetaddr[5] = 0x33;
+#else
+ /* Generate random lower MAC half */
+ dev->enetaddr[3] = get_random_byte(0x11);
+ dev->enetaddr[4] = get_random_byte(dev->enetaddr[3]);
+ dev->enetaddr[5] = get_random_byte(dev->enetaddr[4]);
+#endif
+ eth_setenv_enetaddr(s, dev->enetaddr);
+ }
+
+ dev->init = (void *) armdfec_init;
+ dev->halt = (void *) armdfec_halt;
+ dev->send = (void *) armdfec_send;
+ dev->recv = (void *) armdfec_recv;
+
+ eth_register(dev);
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
+ miiphy_register(dev->name, smi_reg_read, smi_reg_write);
+
+#if defined(CONFIG_PHY_BASE_ADR)
+ miiphy_write(dev->name, PHY_ADR_REQ, PHY_ADR_REQ,
+ (u16) CONFIG_PHY_BASE_ADR);
+#else
+ /* Search phy address from range 0-31 */
+ phy_adr = ethernet_phy_detect(dev);
+ if (phy_adr < 0) {
+ printf("Error: PHY not detected at address range 0-31\n");
+ return -1;
+ } else {
+ debug("PHY detected at addr %d\n", phy_adr);
+ miiphy_write(dev->name, PHY_ADR_REQ, PHY_ADR_REQ,
+ (u16) phy_adr);
+ }
+#endif
+#endif
+ return 0;
+}
diff --git a/drivers/net/armada100_fec.h b/drivers/net/armada100_fec.h
new file mode 100644
index 0000000..b57b35f
--- /dev/null
+++ b/drivers/net/armada100_fec.h
@@ -0,0 +1,227 @@
+/*
+ * (C) Copyright 2011
+ * eInfochips Ltd. <www.einfochips.com>
+ * Written-by: Ajay Bhargav <ajay.bhargav at einfochips.com>
+ *
+ * (C) Copyright 2010
+ * Marvell Semiconductor <www.marvell.com>
+ * Contributor: Mahavir Jain <mjain at marvell.com>
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#ifndef __ARMADA100_FEC_H__
+#define __ARMADA100_FEC_H__
+
+#define PORT_NUM 0x0
+
+/* RX & TX descriptor command */
+#define BUF_OWNED_BY_DMA (1<<31)
+
+/* RX descriptor status */
+#define RX_EN_INT (1<<23)
+#define RX_FIRST_DESC (1<<17)
+#define RX_LAST_DESC (1<<16)
+#define RX_ERROR (1<<15)
+
+/* TX descriptor command */
+#define TX_EN_INT (1<<23)
+#define TX_GEN_CRC (1<<22)
+#define TX_ZERO_PADDING (1<<18)
+#define TX_FIRST_DESC (1<<17)
+#define TX_LAST_DESC (1<<16)
+#define TX_ERROR (1<<15)
+
+/* smi register */
+#define SMI_BUSY (1<<28) /* 0 - Write, 1 - Read */
+#define SMI_R_VALID (1<<27) /* 0 - Write, 1 - Read */
+#define SMI_OP_W (0<<26) /* Write operation */
+#define SMI_OP_R (1<<26) /* Read operation */
+
+#define HASH_ADD 0
+#define HASH_DELETE 1
+#define HASH_ADDR_TABLE_SIZE 0x4000 /* 16K (1/2K address - PCR_HS == 1) */
+#define HOP_NUMBER 12
+
+#define PHY_WAIT_ITERATIONS 1000 /* 1000 iterations * 10uS = 10mS max */
+#define PHY_WAIT_MICRO_SECONDS 10
+
+#define ETH_HW_IP_ALIGN 2 /* hw aligns IP header */
+#define ETH_EXTRA_HEADER (6+6+2+4)
+ /* dest+src addr+protocol id+crc */
+#define MAX_PKT_SIZE 1536
+
+
+/* Bit definitions of the SDMA Config Reg */
+#define SDCR_BSZ_OFF 12
+#define SDCR_BSZ8 (3<<SDCR_BSZ_OFF)
+#define SDCR_BSZ4 (2<<SDCR_BSZ_OFF)
+#define SDCR_BSZ2 (1<<SDCR_BSZ_OFF)
+#define SDCR_BSZ1 (0<<SDCR_BSZ_OFF)
+#define SDCR_BLMR (1<<6)
+#define SDCR_BLMT (1<<7)
+#define SDCR_RIFB (1<<9)
+#define SDCR_RC_OFF 2
+#define SDCR_RC_MAX_RETRANS (0xf << SDCR_RC_OFF)
+
+/* SDMA_CMD */
+#define SDMA_CMD_AT (1<<31)
+#define SDMA_CMD_TXDL (1<<24)
+#define SDMA_CMD_TXDH (1<<23)
+#define SDMA_CMD_AR (1<<15)
+#define SDMA_CMD_ERD (1<<7)
+
+
+/* Bit definitions of the Port Config Reg */
+#define PCR_HS (1<<12)
+#define PCR_EN (1<<7)
+#define PCR_PM (1<<0)
+
+/* Bit definitions of the Port Config Extend Reg */
+#define PCXR_2BSM (1<<28)
+#define PCXR_DSCP_EN (1<<21)
+#define PCXR_MFL_1518 (0<<14)
+#define PCXR_MFL_1536 (1<<14)
+#define PCXR_MFL_2048 (2<<14)
+#define PCXR_MFL_64K (3<<14)
+#define PCXR_FLP (1<<11)
+#define PCXR_PRIO_TX_OFF 3
+#define PCXR_TX_HIGH_PRI (7<<PCXR_PRIO_TX_OFF)
+
+/*
+ * * Bit definitions of the Interrupt Cause Reg
+ * * and Interrupt MASK Reg is the same
+ * */
+#define ICR_RXBUF (1<<0)
+#define ICR_TXBUF_H (1<<2)
+#define ICR_TXBUF_L (1<<3)
+#define ICR_TXEND_H (1<<6)
+#define ICR_TXEND_L (1<<7)
+#define ICR_RXERR (1<<8)
+#define ICR_TXERR_H (1<<10)
+#define ICR_TXERR_L (1<<11)
+#define ICR_TX_UDR (1<<13)
+#define ICR_MII_CH (1<<28)
+
+#define ALL_INTS (ICR_TXBUF_H | ICR_TXBUF_L | ICR_TX_UDR |\
+ ICR_TXERR_H | ICR_TXERR_L |\
+ ICR_TXEND_H | ICR_TXEND_L |\
+ ICR_RXBUF | ICR_RXERR | ICR_MII_CH)
+
+#define PHY_MASK 0x0000001f
+
+#define to_darmdfec(_kd) container_of(_kd, struct armdfec_device, dev)
+/* Size of a Tx/Rx descriptor used in chain list data structure */
+#define ARMDFEC_RXQ_DESC_ALIGNED_SIZE \
+ (((sizeof(struct rx_desc) / PKTALIGN) + 1) * PKTALIGN)
+
+#define ARMDFEC_WR(val, adr) writel(val, &adr)
+#define ARMDFEC_RD(adr) readl(&adr)
+#define RX_BUF_OFFSET 0x2
+#define RXQ 0x0 /* RX Queue 0 */
+#define TXQ 0x1 /* TX Queue 1 */
+
+struct addr_table_entry_t {
+ u32 lo;
+ u32 hi;
+};
+
+/* Bit fields of a Hash Table Entry */
+enum hash_table_entry {
+ hteValid = 1,
+ hteSkip = 2,
+ hteRD = 4,
+ hteRDBit = 2
+};
+
+struct tx_desc {
+ volatile u32 cmd_sts; /* Command/status field */
+ u16 reserved;
+ u16 byte_cnt; /* buffer byte count */
+ u8 *buf_ptr; /* pointer to buffer for this descriptor */
+ struct tx_desc *nextdesc_p; /* Pointer to next descriptor */
+};
+
+struct rx_desc {
+ volatile u32 cmd_sts; /* Descriptor command status */
+ u16 byte_cnt; /* Descriptor buffer byte count */
+ u16 buf_size; /* Buffer size */
+ u8 *buf_ptr; /* Descriptor buffer pointer */
+ struct rx_desc *nxtdesc_p; /* Next descriptor pointer */
+};
+
+/*
+ * Armada100 Fast Ethernet controller Registers
+ * Refer Datasheet Appendix A.22
+ */
+struct armdfec_reg {
+ u32 phyadr; /* PHY Address */
+ u8 pad1[0x010 - 0x00 - 4];
+ u32 smi; /* SMI */
+ u8 pad2[0x400 - 0x010 - 4];
+ u32 pconf; /* Port configuration */
+ u8 pad3[4];
+ u32 pconf_ext; /* Port configuration extend */
+ u8 pad4[4];
+ u32 pcmd; /* Port Command */
+ u8 pad5[4];
+ u32 pstatus; /* Port Status */
+ u8 pad6[4];
+ u32 spar; /* Serial Parameters */
+ u8 pad7[4];
+ u32 htpr; /* Hash table pointer */
+ u8 pad8[4];
+ u32 fcsal; /* Flow control source address low */
+ u8 pad9[4];
+ u32 fcsah; /* Flow control source address high */
+ u8 pad10[4];
+ u32 sdma_conf; /* SDMA configuration */
+ u8 pad11[4];
+ u32 sdma_cmd; /* SDMA command */
+ u8 pad12[4];
+ u32 ic; /* Interrupt cause */
+ u32 iwc; /* Interrupt write to clear */
+ u32 im; /* Interrupt mask */
+ u8 pad13[4];
+ u32 *eth_idscpp[4]; /* Eth0 IP Differentiated Services Code
+ Point to Priority 0 Low */
+ u32 eth_vlan_p; /* Eth0 VLAN Priority Tag to Priority */
+ u8 pad14[0x480 - 0x470 - 4];
+ struct rx_desc *rxfdp[4]; /* Ethernet First Rx Descriptor
+ Pointer */
+ u8 pad15[0x4a0 - 0x48c - 4];
+ struct rx_desc *rxcdp[4]; /* Ethernet Current Rx Descriptor
+ Pointer */
+ u8 pad16[0x4e0 - 0x4ac - 4];
+ struct tx_desc *txcdp[2]; /* Ethernet Current Tx Descriptor
+ Pointer */
+};
+
+struct armdfec_device {
+ struct eth_device dev;
+ struct armdfec_reg *regs;
+ struct tx_desc *p_txdesc;
+ struct rx_desc *p_rxdesc;
+ struct rx_desc *p_rxdesc_curr;
+ u8 *p_rxbuf;
+ u8 *p_aligned_txbuf;
+ u8 *htpr; /* hash pointer */
+};
+
+#endif /* __ARMADA100_FEC_H__ */
diff --git a/include/netdev.h b/include/netdev.h
index 6f0a971..e7b9298 100644
--- a/include/netdev.h
+++ b/include/netdev.h
@@ -94,6 +94,7 @@ int xilinx_emaclite_initialize (bd_t *bis, int base_addr);
int sh_eth_initialize(bd_t *bis);
int dm9000_initialize(bd_t *bis);
int fecmxc_initialize(bd_t *bis);
+int armada100_fec_initialize(void);
/* Boards with PCI network controllers can call this from their board_eth_init()
* function to initialize whatever's on board.
--
1.7.0.4
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