[U-Boot] [PATCH 03/11] net: add FTMAC110 10/100Mbps ethernet support

Kuo-Jung Su
2013-03-29T07:06:20Z

Faraday FTMAC110 10/100Mbps supports half-word data transfer for Linux.
However it has a weird DMA alignment issue:

(1) Tx DMA Buffer Address:
1 bytes aligned: Invalid
2 bytes aligned: O.K
4 bytes aligned: O.K

(2) Rx DMA Buffer Address:
1 bytes aligned: Invalid
2 bytes aligned: O.K
4 bytes aligned: Invalid!!!

Signed-off-by: Kuo-Jung Su <dantesu@faraday-tech.com>
---
drivers/net/Makefile | 1 +
drivers/net/ftmac110.c | 484 ++++++++++++++++++++++++++++++++++++++++++++++++
drivers/net/ftmac110.h | 131 +++++++++++++
3 files changed, 616 insertions(+)
create mode 100644 drivers/net/ftmac110.c
create mode 100644 drivers/net/ftmac110.h

diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 786a656..0e23817 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -46,6 +46,7 @@ COBJS-$(CONFIG_ETHOC) += ethoc.o
COBJS-$(CONFIG_FEC_MXC) += fec_mxc.o
COBJS-$(CONFIG_FSLDMAFEC) += fsl_mcdmafec.o mcfmii.o
COBJS-$(CONFIG_FTGMAC100) += ftgmac100.o
+COBJS-$(CONFIG_FTMAC110) += ftmac110.o
COBJS-$(CONFIG_FTMAC100) += ftmac100.o
COBJS-$(CONFIG_GRETH) += greth.o
COBJS-$(CONFIG_INCA_IP_SWITCH) += inca-ip_sw.o
diff --git a/drivers/net/ftmac110.c b/drivers/net/ftmac110.c
new file mode 100644
index 0000000..67373f5
--- /dev/null
+++ b/drivers/net/ftmac110.c
@@ -0,0 +1,484 @@
+/*
+ * Faraday 10/100Mbps Ethernet Controller
+ *
+ * (C) Copyright 2010 Faraday Technology
+ * Dante Su <dantesu@faraday-tech.com>
+ *
+ * This file is released under the terms of GPL v2 and any later version.
+ * See the file COPYING in the root directory of the source tree for details.
+ */
+
+#include <common.h>
+#include <command.h>
+#include <malloc.h>
+#include <net.h>
+#include <asm/dma-mapping.h>
+
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
+#include <miiphy.h>
+#endif
+
+#include "ftmac110.h"
+
+#ifndef EMAC_REG32
+#define EMAC_REG32(dev, off) *(volatile uint32_t *)((dev)->iobase + (off))
+#endif
+
+#define CFG_DEBUG_DESC 0
+#define CFG_DEBUG_TX 0
+#define CFG_DEBUG_RX 0
+
+#define CFG_RXDES_NUM 8
+#define CFG_TXDES_NUM 2
+#define CFG_XBUF_SIZE 1536
+
+/*******************************************************************/
+/* FTMAC110 DMA design issue */
+/* Dante Su 2010.02.03 */
+/* */
+/* The DMA engine has a weird restriction that its Rx DMA engine */
+/* accepts only 16-bits aligned address, 32-bits aligned is not */
+/* acceptable. However this restriction does not apply to Tx DMA. */
+/* Conclusion: */
+/* (1) Tx DMA Buffer Address: */
+/* 1 bytes aligned: Invalid */
+/* 2 bytes aligned: O.K */
+/* 4 bytes aligned: O.K (-> u-boot ZeroCopy is possible) */
+/* (2) Rx DMA Buffer Address: */
+/* 1 bytes aligned: Invalid */
+/* 2 bytes aligned: O.K */
+/* 4 bytes aligned: Invalid */
+/*******************************************************************/
+
+struct ftmac110_priv {
+ uint32_t iobase;
+ uint32_t irqmask;
+ uint32_t maccr;
+ uint32_t lnkup;
+
+ struct ftmac110_rxd *rx_descs;
+ ulong rx_descs_dma;
+ uint32_t rx_idx;
+
+ struct ftmac110_txd *tx_descs;
+ ulong tx_descs_dma;
+ uint32_t tx_idx;
+
+ uint32_t phy_addr;
+};
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static char ftmac110_mac_addr[] = {0x00, 0x41, 0x71, 0x00, 0x00, 0x52};
+
+static int ftmac110_reset(struct eth_device *dev);
+
+static uint16_t mdio_read(struct eth_device *dev, uint8_t phyaddr, uint8_t phyreg)
+{
+ uint32_t tmp;
+
+ tmp = MIIREG_READ
+ | (phyaddr << MIIREG_PHYADDR_SHIFT)
+ | (phyreg << MIIREG_PHYREG_SHIFT)
+ | 0x30000000;
+
+ EMAC_REG32(dev, REG_PHYCR) = tmp;
+
+ do {
+ tmp = EMAC_REG32(dev, REG_PHYCR);
+ } while (tmp & MIIREG_READ);
+
+ return (uint16_t)(tmp & 0xFFFF);
+}
+
+static void mdio_write(struct eth_device *dev, uint8_t phyaddr, uint8_t phyreg, uint16_t phydata)
+{
+ unsigned int tmp;
+
+ tmp = MIIREG_WRITE
+ | (phyaddr << MIIREG_PHYADDR_SHIFT)
+ | (phyreg << MIIREG_PHYREG_SHIFT)
+ | 0x30000000;
+
+ EMAC_REG32(dev, REG_PHYDR) = phydata;
+ EMAC_REG32(dev, REG_PHYCR) = tmp;
+
+ do {
+ tmp = EMAC_REG32(dev, REG_PHYCR);
+ } while (tmp & MIIREG_WRITE);
+}
+
+static uint32_t ftmac110_phyqry(struct eth_device *dev)
+{
+ ulong ts;
+ uint32_t maccr;
+ uint16_t pa, tmp;
+ struct ftmac110_priv *priv = dev->priv;
+
+ maccr = MACCR_100M | MACCR_FD;
+
+ /* 0. find the phy device */
+ for (pa = 0; pa < 32; ++pa) {
+ tmp = mdio_read(dev, pa, MII_PHYSID1);
+ if (tmp == 0xFFFF || tmp == 0x0000)
+ continue;
+ break;
+ }
+ if (pa >= 32) {
+ puts("ftmac110: phy device not found!\n");
+ return maccr;
+ } else {
+ priv->phy_addr = pa;
+ }
+
+ /* 1. check link status */
+ priv->lnkup = 0;
+ for (ts = get_timer(0); get_timer(ts) < 1000; ) {
+ if (mdio_read(dev, priv->phy_addr, MII_BMSR) & BMSR_LSTATUS) {
+ priv->lnkup = 1;
+ break;
+ }
+ }
+ if (!priv->lnkup) {
+ puts("ftmac110: link down\n");
+ goto exit;
+ }
+
+ /* 2. check A/N status */
+ for (ts = get_timer(0); get_timer(ts) < 1000; ) {
+ if (mdio_read(dev, priv->phy_addr, MII_BMSR) & BMSR_ANEGCOMPLETE)
+ break;
+ }
+ if (get_timer(ts) >= 1000) {
+ puts("ftmac110: A/N failed\n");
+ goto exit;
+ }
+
+ /* 3. build MACCR with the PHY status */
+ tmp = mdio_read(dev, priv->phy_addr, MII_ADVERTISE);
+ tmp &= mdio_read(dev, priv->phy_addr, MII_LPA);
+
+ /* 3-1. 10/100Mbps Detection */
+ if (tmp & LPA_100FULL) /* 100Mbps full-duplex */
+ maccr = MACCR_100M | MACCR_FD;
+ else if (tmp & LPA_100HALF) /* 100Mbps half-duplex */
+ maccr = MACCR_100M;
+ else if (tmp & LPA_10FULL) /* 10Mbps full-duplex */
+ maccr = MACCR_FD;
+ else if (tmp & LPA_10HALF) /* 10Mbps half-duplex */
+ maccr = 0;
+ else
+ maccr = MACCR_100M | MACCR_FD;
+
+ printf("ftmac110: %d Mbps, %s\n",
+ (maccr & MACCR_100M) ? 100 : 10,
+ (maccr & MACCR_FD) ? "Full" : "half");
+
+exit:
+ return maccr;
+}
+
+static int ftmac110_reset(struct eth_device *dev)
+{
+ uint32_t i, tmp, maccr;
+ struct ftmac110_priv *priv = dev->priv;
+
+ /*
+ * 1. MAC reset
+ */
+ EMAC_REG32(priv, REG_MACCR) = MACCR_RESET;
+ do {
+ tmp = EMAC_REG32(priv, REG_MACCR);
+ } while (tmp & MACCR_RESET);
+
+ /* 1-1. tx ring */
+ for (i = 0; i < CFG_TXDES_NUM; ++i)
+ priv->tx_descs[i].owner = 0; /* owned by SW */
+ priv->tx_idx = 0;
+
+ /* 1-2. rx ring */
+ for (i = 0; i < CFG_RXDES_NUM; ++i) {
+ priv->rx_descs[i].owner = 1; /* owned by HW */
+ priv->rx_descs[i].bufsz = CFG_XBUF_SIZE;
+ }
+ priv->rx_idx = 0;
+
+ /*
+ * 2. PHY status query
+ */
+ maccr = ftmac110_phyqry(dev);
+
+ /*
+ * 3. Fix up the MACCR value
+ */
+ priv->maccr = maccr | MACCR_CRCAPD | MACCR_RXALL | MACCR_RXRUNT
+ | MACCR_RXEN | MACCR_TXEN | MACCR_RXDMAEN | MACCR_TXDMAEN;
+ priv->irqmask = 0;
+
+ /*
+ * 4. MAC address setup
+ */
+ do {
+ uint8_t *ma = dev->enetaddr;
+ EMAC_REG32(priv, REG_HMAC) = ma[1] | (ma[0] << 8);
+ EMAC_REG32(priv, REG_LMAC) = ma[5] | (ma[4] << 8) | (ma[3] << 16) | (ma[2] << 24);
+ } while (0);
+
+ /*
+ * 5. MAC registers setup
+ */
+ EMAC_REG32(priv, REG_RXBAR) = priv->rx_descs_dma;
+ EMAC_REG32(priv, REG_TXBAR) = priv->tx_descs_dma;
+ EMAC_REG32(priv, REG_ITC) = 0x00001010;
+ EMAC_REG32(priv, REG_APTC) = 0x00000001;
+ EMAC_REG32(priv, REG_DBLAC) = 0x00000390;
+ EMAC_REG32(priv, REG_ISR) = 0x000003FF;
+ EMAC_REG32(priv, REG_IMR) = priv->irqmask;
+ EMAC_REG32(priv, REG_MACCR) = priv->maccr;
+
+ return 0;
+}
+
+static int ftmac110_probe(struct eth_device *dev, bd_t *bis)
+{
+ debug("ftmac110: probe\n");
+
+ if (ftmac110_reset(dev))
+ return -1;
+
+ return 0;
+}
+
+static void ftmac110_halt(struct eth_device *dev)
+{
+ struct ftmac110_priv *priv = dev->priv;
+
+ EMAC_REG32(priv, REG_IMR) = 0;
+ EMAC_REG32(priv, REG_MACCR) = 0;
+
+ debug("ftmac110: halt\n");
+}
+
+static int ftmac110_send(struct eth_device *dev, void *packet, int length)
+{
+ struct ftmac110_priv *priv = dev->priv;
+ struct ftmac110_txd *cur_desc;
+
+ if (!priv->lnkup)
+ return 0;
+
+ if (length <= 0 || length > CFG_XBUF_SIZE) {
+ printf("ftmac110: bad tx packet length(%d)\n", length);
+ return 0;
+ }
+
+ if (length < 60)
+ length = 60;
+
+ cur_desc = &priv->tx_descs[priv->tx_idx];
+ if (cur_desc->owner) {
+ EMAC_REG32(priv, REG_TXPD) = 0xffffffff; /* kick-off Tx DMA */
+ printf("ftmac110: out of txd\n");
+ return 0;
+ }
+
+ memcpy(cur_desc->vbuf, (void *)packet, length);
+ dma_map_single(cur_desc->vbuf, length, DMA_TO_DEVICE);
+
+ cur_desc->len = length;
+ cur_desc->lts = 1;
+ cur_desc->fts = 1;
+ cur_desc->owner = 1;
+
+ EMAC_REG32(priv, REG_TXPD) = 0xffffffff; /* kick-off Tx DMA */
+
+#if CFG_DEBUG_TX
+ printf("ftmac110: txd[%d]@0x%08X, buf=0x%p(pa=0x%08X)\n",
+ priv->tx_idx, (uint32_t)cur_desc,
+ cur_desc->vbuf, cur_desc->buf);
+#endif
+
+ priv->tx_idx = (priv->tx_idx + 1) % CFG_TXDES_NUM;
+
+ return length;
+}
+
+static int ftmac110_recv(struct eth_device *dev)
+{
+ struct ftmac110_priv *priv = dev->priv;
+ struct ftmac110_rxd *cur_desc;
+ uint32_t rlen = 0;
+ uint8_t *buf;
+ uint16_t len;
+
+ if (!priv->lnkup)
+ return 0;
+
+ do {
+ cur_desc = &priv->rx_descs[priv->rx_idx];
+ if (cur_desc->owner == 1)
+ break;
+
+ len = cur_desc->len;
+ buf = cur_desc->vbuf;
+
+ if (cur_desc->error) {
+ printf("ftmac110: rx error\n");
+ } else {
+#if CFG_DEBUG_RX
+ printf("ftmac110: rxd[%d]@0x%p, buf=0x%08X, len=%d\n",
+ priv->rx_idx, cur_desc,
+ (uint32_t)buf, len);
+#endif
+ dma_map_single(buf, len, DMA_FROM_DEVICE);
+ NetReceive(buf, len);
+ rlen += len;
+ }
+
+ cur_desc->len = 0;
+ cur_desc->owner = 1; /* owned by hardware */
+
+ priv->rx_idx = (priv->rx_idx + 1) % CFG_RXDES_NUM;
+ } while (0);
+
+ return rlen;
+}
+
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
+
+static int ftmac110_mdio_read (const char *devname, uint8_t addr, uint8_t reg, uint16_t *value)
+{
+ int ret = 0;
+ struct eth_device *dev;
+
+ dev = eth_get_dev_by_name(devname);
+ if (dev == NULL) {
+ printf("%s: no such device\n", devname);
+ ret = -1;
+ } else {
+ *value = mdio_read(dev, addr, reg);
+ }
+
+ return ret;
+}
+
+static int ftmac110_mdio_write (const char *devname, uint8_t addr, uint8_t reg, uint16_t value)
+{
+ int ret = 0;
+ struct eth_device *dev;
+
+ dev = eth_get_dev_by_name(devname);
+ if (dev == NULL) {
+ printf("%s: no such device\n", devname);
+ ret = -1;
+ } else {
+ mdio_write(dev, addr, reg, value);
+ }
+
+ return ret;
+}
+
+#endif /* #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) */
+
+int ftmac110_initialize(bd_t *bis)
+{
+ int i, card_number = 0;
+ char enetvar[32];
+ char *tmp, *end;
+ struct eth_device *dev;
+ struct ftmac110_priv *priv;
+
+ dev = malloc(sizeof(struct eth_device) + sizeof(struct ftmac110_priv));
+ if (dev == NULL) {
+ panic("ftmac110: out of memory 1\n");
+ return -1;
+ }
+ priv = (struct ftmac110_priv *)(dev + 1);
+ memset(dev, 0, sizeof(struct eth_device) + sizeof(struct ftmac110_priv));
+
+ sprintf(dev->name, "FTMAC110#%d", card_number);
+
+ dev->iobase = priv->iobase = CONFIG_FTMAC110_BASE;
+ dev->priv = priv;
+ dev->init = ftmac110_probe;
+ dev->halt = ftmac110_halt;
+ dev->send = ftmac110_send;
+ dev->recv = ftmac110_recv;
+
+ sprintf(enetvar, card_number ? "eth%daddr" : "ethaddr", card_number);
+
+ tmp = getenv(enetvar);
+ if (tmp != NULL) {
+ for (i = 0; i < 6; i++) {
+ dev->enetaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
+ if (tmp)
+ tmp = (*end) ? end + 1 : end;
+ }
+ } else {
+ memcpy(dev->enetaddr, ftmac110_mac_addr, 6);
+ }
+
+ /* allocate tx descriptors (it must be 16 bytes aligned) */
+ priv->tx_descs = dma_alloc_coherent(sizeof(struct ftmac110_txd) * CFG_TXDES_NUM, &priv->tx_descs_dma);
+ if (priv->tx_descs == NULL)
+ panic("ftmac110: out of memory 3\n");
+ memset((void *)priv->tx_descs, 0, sizeof(struct ftmac110_txd) * CFG_TXDES_NUM);
+ for (i = 0; i < CFG_TXDES_NUM; ++i) {
+ void *va = memalign(ARCH_DMA_MINALIGN, CFG_XBUF_SIZE);
+ if (!va)
+ panic("ftmac110: out of memory 4\n");
+ priv->tx_descs[i].vbuf = va;
+ priv->tx_descs[i].buf = virt_to_phys(va);
+ priv->tx_descs[i].len = 0;
+ priv->tx_descs[i].end = 0;
+ priv->tx_descs[i].owner = 0; /* owned by SW */
+ }
+ priv->tx_descs[CFG_TXDES_NUM - 1].end = 1;
+ priv->tx_idx = 0;
+
+ /* allocate rx descriptors (it must be 16 bytes aligned) */
+ priv->rx_descs = dma_alloc_coherent(sizeof(struct ftmac110_rxd) * CFG_RXDES_NUM, &priv->rx_descs_dma);
+ if (priv->rx_descs == NULL)
+ panic("ftmac110: out of memory 4\n");
+ memset((void *)priv->rx_descs, 0, sizeof(struct ftmac110_rxd) * CFG_RXDES_NUM);
+ for (i = 0; i < CFG_RXDES_NUM; ++i) {
+ void *va = memalign(ARCH_DMA_MINALIGN, CFG_XBUF_SIZE + 2);
+ if (!va)
+ panic("ftmac110: out of memory 5\n");
+ /* it needs to be exactly 2 bytes aligned */
+ va = ((uint8_t *)va + 2);
+ priv->rx_descs[i].vbuf = va;
+ priv->rx_descs[i].buf = (uint32_t)virt_to_phys(va);
+ priv->rx_descs[i].len = 0;
+ priv->rx_descs[i].bufsz = CFG_XBUF_SIZE;
+ priv->rx_descs[i].end = 0;
+ priv->rx_descs[i].owner = 1; /* owned by HW */
+ }
+ priv->rx_descs[CFG_RXDES_NUM - 1].end = 1;
+ priv->rx_idx = 0;
+
+ eth_register(dev);
+
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
+ miiphy_register (dev->name, ftmac110_mdio_read, ftmac110_mdio_write);
+#endif
+
+#if CFG_DEBUG_DESC
+ for (i = 0; i < CFG_TXDES_NUM; ++i) {
+ printf("TXD[%d]: 0x%08X, 0x%08X<=0x%08x\n",
+ i, (uint32_t)&priv->tx_descs[i],
+ (uint32_t)priv->tx_descs[i].vbuf,
+ (uint32_t)priv->tx_descs[i].buf);
+ }
+ for (i = 0; i < CFG_RXDES_NUM; ++i) {
+ printf("RXD[%d]: 0x%08X, 0x%08X<=0x%08X\n",
+ i, (uint32_t)&priv->rx_descs[i],
+ (uint32_t)priv->rx_descs[i].vbuf,
+ (uint32_t)priv->rx_descs[i].buf);
+ }
+#endif
+
+ card_number++;
+
+ return card_number;
+}
diff --git a/drivers/net/ftmac110.h b/drivers/net/ftmac110.h
new file mode 100644
index 0000000..b98bd7b
--- /dev/null
+++ b/drivers/net/ftmac110.h
@@ -0,0 +1,131 @@
+/*
+ * Faraday 10/100Mbps Ethernet Controller
+ *
+ * (C) Copyright 2010 Faraday Technology
+ * Dante Su <dantesu@faraday-tech.com>
+ *
+ * This file is released under the terms of GPL v2 and any later version.
+ * See the file COPYING in the root directory of the source tree for details.
+ */
+
+#ifndef __FTMAC110_H
+#define __FTMAC110_H
+
+/*
+ * FTMAC110 MAC Registers
+ */
+#define REG_ISR 0x00 /* Interrups status register */
+#define REG_IMR 0x04 /* Interrupt maks register */
+#define REG_HMAC 0x08 /* MAC address (Most significant) */
+#define REG_LMAC 0x0c /* MAC address (Least significant) */
+#define REG_MHT0 0x10 /* Multicast Hash Table 0 register */
+#define REG_MHT1 0x14 /* Multicast Hash Table 1 register */
+#define REG_TXPD 0x18 /* Transmit Poll Demand register */
+#define REG_RXPD 0x1c /* Receive Poll Demand register */
+#define REG_TXBAR 0x20 /* Transmit Ring Base Address register */
+#define REG_RXBAR 0x24 /* Receive Ring Base Address register */
+#define REG_ITC 0x28 /* Interrupt timer control register */
+#define REG_APTC 0x2C /* Automatic Polling Timer control register */
+#define REG_DBLAC 0x30 /* DMA Burst Length and Arbitration control register */
+
+#define REG_MACCR 0x88 /* MAC control register */
+#define REG_MACSR 0x8C /* MAC status register */
+#define REG_PHYCR 0x90 /* PHY control register */
+#define REG_PHYDR 0x94 /* PHY data register */
+#define REG_FCR 0x98 /* Flow Control register */
+#define REG_BPR 0x9c /* Back pressure register */
+
+/* Interrupt status register(ISR), Interrupt mask register(IMR) bit setting */
+#define ISR_PHYSTCHG (1 << 9) /* phy status change */
+#define ISR_AHBERR (1 << 8) /* bus error */
+#define ISR_RXLOST (1 << 7) /* rx lost due to fifo overflow */
+#define ISR_RXFIFO (1 << 6) /* rx to fifo */
+#define ISR_TXLOST (1 << 5) /* tx lost due to collision */
+#define ISR_TXOK (1 << 4) /* tx to ethernet */
+#define ISR_NOTXBUF (1 << 3) /* out of tx buffer */
+#define ISR_TXFIFO (1 << 2) /* packets transmitted to fifo */
+#define ISR_NORXBUF (1 << 1) /* out of rx buffer */
+#define ISR_RXOK (1 << 0) /* packets received to buffer (ram) */
+
+/* MACC control bits */
+#define MACCR_100M (1 << 18) /* 100Mbps mode */
+#define MACCR_RXBCST (1 << 17) /* receive all broadcast packet */
+#define MACCR_RXMCST (1 << 16) /* receive all multicast packet */
+#define MACCR_FD (1 << 15) /* full duplex */
+#define MACCR_CRCAPD (1 << 14) /* append crc to transmit packet */
+#define MACCR_RXALL (1 << 12) /* not check incoming packet's destination address */
+#define MACCR_RXFTL (1 << 11) /* store incoming packet even its length > 1518 byte */
+#define MACCR_RXRUNT (1 << 10) /* store incoming packet even its length < 64 byte */
+#define MACCR_RXMCSTHT (1 << 9) /* receive multicast packet by matching hash table */
+#define MACCR_RXEN (1 << 8) /* rx enable */
+#define MACCR_RXINHDTX (1 << 6) /* rx in half duplex tx */
+#define MACCR_TXEN (1 << 5) /* tx enable */
+#define MACCR_CRCDIS (1 << 4) /* store incoming packet even if crc error */
+#define MACCR_LOOPBACK (1 << 3) /* Internal loop-back */
+#define MACCR_RESET (1 << 2) /* reset */
+#define MACCR_RXDMAEN (1 << 1) /* enable rx dma */
+#define MACCR_TXDMAEN (1 << 0) /* enable tx dma */
+
+/*
+ * MII PHY Registers
+ */
+
+/*
+ * Bits related to the MII interface
+ */
+#define MIIREG_READ (1 << 26)
+#define MIIREG_WRITE (1 << 27)
+#define MIIREG_PHYREG_SHIFT 21
+#define MIIREG_PHYADDR_SHIFT 16
+
+/*
+ * Receive Ring descriptor structure
+ */
+struct ftmac110_rxd {
+ /* RXDES0 */
+ uint32_t len:11;
+ uint32_t rsvd1:5;
+ uint32_t mcast:1;
+ uint32_t bcast:1;
+ uint32_t error:5;
+ uint32_t rsvd2:5;
+ uint32_t lrs:1;
+ uint32_t frs:1;
+ uint32_t rsvd3:1;
+ uint32_t owner:1; /* BIT: 31 - 1:Hardware, 0: Software */
+
+ /* RXDES1 */
+ uint32_t bufsz:11;
+ uint32_t rsvd4:20;
+ uint32_t end:1;
+
+ /* RXDES2 */
+ uint32_t buf;
+
+ /* RXDES3 */
+ void *vbuf;
+};
+
+struct ftmac110_txd {
+ /* TXDES0 */
+ uint32_t collision:2;
+ uint32_t rsvd1:29;
+ uint32_t owner:1; /* BIT: 31 - 1:Hardware, 0: Software */
+
+ /* TXDES1 */
+ uint32_t len:11;
+ uint32_t rsvd2:16;
+ uint32_t lts:1;
+ uint32_t fts:1;
+ uint32_t tx2fic:1;
+ uint32_t txic:1;
+ uint32_t end:1;
+
+ /* TXDES2 */
+ uint32_t buf;
+
+ /* TXDES3 */
+ void *vbuf;
+};
+
+#endif /* FTMAC110_H */
--
1.7.9.5