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Diffstat (limited to 'drivers/net/ftmac110.c')
-rw-r--r--drivers/net/ftmac110.c491
1 files changed, 0 insertions, 491 deletions
diff --git a/drivers/net/ftmac110.c b/drivers/net/ftmac110.c
deleted file mode 100644
index 7e54d4642dd..00000000000
--- a/drivers/net/ftmac110.c
+++ /dev/null
@@ -1,491 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Faraday 10/100Mbps Ethernet Controller
- *
- * (C) Copyright 2013 Faraday Technology
- * Dante Su <dantesu@faraday-tech.com>
- */
-
-#include <common.h>
-#include <command.h>
-#include <log.h>
-#include <malloc.h>
-#include <net.h>
-#include <asm/cache.h>
-#include <linux/errno.h>
-#include <asm/io.h>
-#include <linux/dma-mapping.h>
-
-#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
-#include <miiphy.h>
-#endif
-
-#include "ftmac110.h"
-
-#define CFG_RXDES_NUM 8
-#define CFG_TXDES_NUM 2
-#define CFG_XBUF_SIZE 1536
-
-#define CFG_MDIORD_TIMEOUT (CONFIG_SYS_HZ >> 1) /* 500 ms */
-#define CFG_MDIOWR_TIMEOUT (CONFIG_SYS_HZ >> 1) /* 500 ms */
-#define CFG_LINKUP_TIMEOUT (CONFIG_SYS_HZ << 2) /* 4 sec */
-
-/*
- * FTMAC110 DMA design issue
- *
- * Its 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_chip {
- void __iomem *regs;
- uint32_t imr;
- uint32_t maccr;
- uint32_t lnkup;
- uint32_t phy_addr;
-
- struct ftmac110_desc *rxd;
- ulong rxd_dma;
- uint32_t rxd_idx;
-
- struct ftmac110_desc *txd;
- ulong txd_dma;
- uint32_t txd_idx;
-};
-
-static int ftmac110_reset(struct eth_device *dev);
-
-static uint16_t mdio_read(struct eth_device *dev,
- uint8_t phyaddr, uint8_t phyreg)
-{
- struct ftmac110_chip *chip = dev->priv;
- struct ftmac110_regs *regs = chip->regs;
- uint32_t tmp, ts;
- uint16_t ret = 0xffff;
-
- tmp = PHYCR_READ
- | (phyaddr << PHYCR_ADDR_SHIFT)
- | (phyreg << PHYCR_REG_SHIFT);
-
- writel(tmp, &regs->phycr);
-
- for (ts = get_timer(0); get_timer(ts) < CFG_MDIORD_TIMEOUT; ) {
- tmp = readl(&regs->phycr);
- if (tmp & PHYCR_READ)
- continue;
- break;
- }
-
- if (tmp & PHYCR_READ)
- printf("ftmac110: mdio read timeout\n");
- else
- ret = (uint16_t)(tmp & 0xffff);
-
- return ret;
-}
-
-static void mdio_write(struct eth_device *dev,
- uint8_t phyaddr, uint8_t phyreg, uint16_t phydata)
-{
- struct ftmac110_chip *chip = dev->priv;
- struct ftmac110_regs *regs = chip->regs;
- uint32_t tmp, ts;
-
- tmp = PHYCR_WRITE
- | (phyaddr << PHYCR_ADDR_SHIFT)
- | (phyreg << PHYCR_REG_SHIFT);
-
- writel(phydata, &regs->phydr);
- writel(tmp, &regs->phycr);
-
- for (ts = get_timer(0); get_timer(ts) < CFG_MDIOWR_TIMEOUT; ) {
- if (readl(&regs->phycr) & PHYCR_WRITE)
- continue;
- break;
- }
-
- if (readl(&regs->phycr) & PHYCR_WRITE)
- printf("ftmac110: mdio write timeout\n");
-}
-
-static uint32_t ftmac110_phyqry(struct eth_device *dev)
-{
- ulong ts;
- uint32_t maccr;
- uint16_t pa, tmp, bmsr, bmcr;
- struct ftmac110_chip *chip = dev->priv;
-
- /* Default = 100Mbps Full */
- maccr = MACCR_100M | MACCR_FD;
-
- /* 1. find the phy device */
- for (pa = 0; pa < 32; ++pa) {
- tmp = mdio_read(dev, pa, MII_PHYSID1);
- if (tmp == 0xFFFF || tmp == 0x0000)
- continue;
- chip->phy_addr = pa;
- break;
- }
- if (pa >= 32) {
- puts("ftmac110: phy device not found!\n");
- goto exit;
- }
-
- /* 2. wait until link-up & auto-negotiation complete */
- chip->lnkup = 0;
- bmcr = mdio_read(dev, chip->phy_addr, MII_BMCR);
- ts = get_timer(0);
- do {
- bmsr = mdio_read(dev, chip->phy_addr, MII_BMSR);
- chip->lnkup = (bmsr & BMSR_LSTATUS) ? 1 : 0;
- if (!chip->lnkup)
- continue;
- if (!(bmcr & BMCR_ANENABLE) || (bmsr & BMSR_ANEGCOMPLETE))
- break;
- } while (get_timer(ts) < CFG_LINKUP_TIMEOUT);
- if (!chip->lnkup) {
- puts("ftmac110: link down\n");
- goto exit;
- }
- if (!(bmcr & BMCR_ANENABLE))
- puts("ftmac110: auto negotiation disabled\n");
- else if (!(bmsr & BMSR_ANEGCOMPLETE))
- puts("ftmac110: auto negotiation timeout\n");
-
- /* 3. derive MACCR */
- if ((bmcr & BMCR_ANENABLE) && (bmsr & BMSR_ANEGCOMPLETE)) {
- tmp = mdio_read(dev, chip->phy_addr, MII_ADVERTISE);
- tmp &= mdio_read(dev, chip->phy_addr, MII_LPA);
- 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 {
- if (bmcr & BMCR_SPEED100)
- maccr = MACCR_100M;
- else
- maccr = 0;
- if (bmcr & BMCR_FULLDPLX)
- maccr |= MACCR_FD;
- }
-
-exit:
- printf("ftmac110: %d Mbps, %s\n",
- (maccr & MACCR_100M) ? 100 : 10,
- (maccr & MACCR_FD) ? "Full" : "half");
- return maccr;
-}
-
-static int ftmac110_reset(struct eth_device *dev)
-{
- uint8_t *a;
- uint32_t i, maccr;
- struct ftmac110_chip *chip = dev->priv;
- struct ftmac110_regs *regs = chip->regs;
-
- /* 1. MAC reset */
- writel(MACCR_RESET, &regs->maccr);
- for (i = get_timer(0); get_timer(i) < 1000; ) {
- if (readl(&regs->maccr) & MACCR_RESET)
- continue;
- break;
- }
- if (readl(&regs->maccr) & MACCR_RESET) {
- printf("ftmac110: reset failed\n");
- return -ENXIO;
- }
-
- /* 1-1. Init tx ring */
- for (i = 0; i < CFG_TXDES_NUM; ++i) {
- /* owned by SW */
- chip->txd[i].ctrl &= cpu_to_le64(FTMAC110_TXD_CLRMASK);
- }
- chip->txd_idx = 0;
-
- /* 1-2. Init rx ring */
- for (i = 0; i < CFG_RXDES_NUM; ++i) {
- /* owned by HW */
- chip->rxd[i].ctrl &= cpu_to_le64(FTMAC110_RXD_CLRMASK);
- chip->rxd[i].ctrl |= cpu_to_le64(FTMAC110_RXD_OWNER);
- }
- chip->rxd_idx = 0;
-
- /* 2. PHY status query */
- maccr = ftmac110_phyqry(dev);
-
- /* 3. Fix up the MACCR value */
- chip->maccr = maccr | MACCR_CRCAPD | MACCR_RXALL | MACCR_RXRUNT
- | MACCR_RXEN | MACCR_TXEN | MACCR_RXDMAEN | MACCR_TXDMAEN;
-
- /* 4. MAC address setup */
- a = dev->enetaddr;
- writel(a[1] | (a[0] << 8), &regs->mac[0]);
- writel(a[5] | (a[4] << 8) | (a[3] << 16)
- | (a[2] << 24), &regs->mac[1]);
-
- /* 5. MAC registers setup */
- writel(chip->rxd_dma, &regs->rxba);
- writel(chip->txd_dma, &regs->txba);
- /* interrupt at each tx/rx */
- writel(ITC_DEFAULT, &regs->itc);
- /* no tx pool, rx poll = 1 normal cycle */
- writel(APTC_DEFAULT, &regs->aptc);
- /* rx threshold = [6/8 fifo, 2/8 fifo] */
- writel(DBLAC_DEFAULT, &regs->dblac);
- /* disable & clear all interrupt status */
- chip->imr = 0;
- writel(ISR_ALL, &regs->isr);
- writel(chip->imr, &regs->imr);
- /* enable mac */
- writel(chip->maccr, &regs->maccr);
-
- return 0;
-}
-
-static int ftmac110_probe(struct eth_device *dev, struct bd_info *bis)
-{
- debug("ftmac110: probe\n");
-
- if (ftmac110_reset(dev))
- return -1;
-
- return 0;
-}
-
-static void ftmac110_halt(struct eth_device *dev)
-{
- struct ftmac110_chip *chip = dev->priv;
- struct ftmac110_regs *regs = chip->regs;
-
- writel(0, &regs->imr);
- writel(0, &regs->maccr);
-
- debug("ftmac110: halt\n");
-}
-
-static int ftmac110_send(struct eth_device *dev, void *pkt, int len)
-{
- struct ftmac110_chip *chip = dev->priv;
- struct ftmac110_regs *regs = chip->regs;
- struct ftmac110_desc *txd;
- uint64_t ctrl;
-
- if (!chip->lnkup)
- return 0;
-
- if (len <= 0 || len > CFG_XBUF_SIZE) {
- printf("ftmac110: bad tx pkt len(%d)\n", len);
- return 0;
- }
-
- len = max(60, len);
-
- txd = &chip->txd[chip->txd_idx];
- ctrl = le64_to_cpu(txd->ctrl);
- if (ctrl & FTMAC110_TXD_OWNER) {
- /* kick-off Tx DMA */
- writel(0xffffffff, &regs->txpd);
- printf("ftmac110: out of txd\n");
- return 0;
- }
-
- memcpy(txd->vbuf, (void *)pkt, len);
- dma_map_single(txd->vbuf, len, DMA_TO_DEVICE);
-
- /* clear control bits */
- ctrl &= FTMAC110_TXD_CLRMASK;
- /* set len, fts and lts */
- ctrl |= FTMAC110_TXD_LEN(len) | FTMAC110_TXD_FTS | FTMAC110_TXD_LTS;
- /* set owner bit */
- ctrl |= FTMAC110_TXD_OWNER;
- /* write back to descriptor */
- txd->ctrl = cpu_to_le64(ctrl);
-
- /* kick-off Tx DMA */
- writel(0xffffffff, &regs->txpd);
-
- chip->txd_idx = (chip->txd_idx + 1) % CFG_TXDES_NUM;
-
- return len;
-}
-
-static int ftmac110_recv(struct eth_device *dev)
-{
- struct ftmac110_chip *chip = dev->priv;
- struct ftmac110_desc *rxd;
- uint32_t len, rlen = 0;
- uint64_t ctrl;
- uint8_t *buf;
-
- if (!chip->lnkup)
- return 0;
-
- do {
- rxd = &chip->rxd[chip->rxd_idx];
- ctrl = le64_to_cpu(rxd->ctrl);
- if (ctrl & FTMAC110_RXD_OWNER)
- break;
-
- len = (uint32_t)FTMAC110_RXD_LEN(ctrl);
- buf = rxd->vbuf;
-
- if (ctrl & FTMAC110_RXD_ERRMASK) {
- printf("ftmac110: rx error\n");
- } else {
- dma_map_single(buf, len, DMA_FROM_DEVICE);
- net_process_received_packet(buf, len);
- rlen += len;
- }
-
- /* owned by hardware */
- ctrl &= FTMAC110_RXD_CLRMASK;
- ctrl |= FTMAC110_RXD_OWNER;
- rxd->ctrl |= cpu_to_le64(ctrl);
-
- chip->rxd_idx = (chip->rxd_idx + 1) % CFG_RXDES_NUM;
- } while (0);
-
- return rlen;
-}
-
-#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
-
-static int ftmac110_mdio_read(struct mii_dev *bus, int addr, int devad,
- int reg)
-{
- uint16_t value = 0;
- int ret = 0;
- struct eth_device *dev;
-
- dev = eth_get_dev_by_name(bus->name);
- if (dev == NULL) {
- printf("%s: no such device\n", bus->name);
- ret = -1;
- } else {
- value = mdio_read(dev, addr, reg);
- }
-
- if (ret < 0)
- return ret;
- return value;
-}
-
-static int ftmac110_mdio_write(struct mii_dev *bus, int addr, int devad,
- int reg, u16 value)
-{
- int ret = 0;
- struct eth_device *dev;
-
- dev = eth_get_dev_by_name(bus->name);
- if (dev == NULL) {
- printf("%s: no such device\n", bus->name);
- ret = -1;
- } else {
- mdio_write(dev, addr, reg, value);
- }
-
- return ret;
-}
-
-#endif /* #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) */
-
-int ftmac110_initialize(struct bd_info *bis)
-{
- int i, card_nr = 0;
- struct eth_device *dev;
- struct ftmac110_chip *chip;
-
- dev = malloc(sizeof(*dev) + sizeof(*chip));
- if (dev == NULL) {
- panic("ftmac110: out of memory 1\n");
- return -1;
- }
- chip = (struct ftmac110_chip *)(dev + 1);
- memset(dev, 0, sizeof(*dev) + sizeof(*chip));
-
- sprintf(dev->name, "FTMAC110#%d", card_nr);
-
- dev->iobase = CONFIG_FTMAC110_BASE;
- chip->regs = (void __iomem *)dev->iobase;
- dev->priv = chip;
- dev->init = ftmac110_probe;
- dev->halt = ftmac110_halt;
- dev->send = ftmac110_send;
- dev->recv = ftmac110_recv;
-
- /* allocate tx descriptors (it must be 16 bytes aligned) */
- chip->txd = dma_alloc_coherent(
- sizeof(struct ftmac110_desc) * CFG_TXDES_NUM, &chip->txd_dma);
- if (!chip->txd)
- panic("ftmac110: out of memory 3\n");
- memset(chip->txd, 0,
- sizeof(struct ftmac110_desc) * 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");
- chip->txd[i].vbuf = va;
- chip->txd[i].pbuf = cpu_to_le32(virt_to_phys(va));
- chip->txd[i].ctrl = 0; /* owned by SW */
- }
- chip->txd[i - 1].ctrl |= cpu_to_le64(FTMAC110_TXD_END);
- chip->txd_idx = 0;
-
- /* allocate rx descriptors (it must be 16 bytes aligned) */
- chip->rxd = dma_alloc_coherent(
- sizeof(struct ftmac110_desc) * CFG_RXDES_NUM, &chip->rxd_dma);
- if (!chip->rxd)
- panic("ftmac110: out of memory 4\n");
- memset((void *)chip->rxd, 0,
- sizeof(struct ftmac110_desc) * 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);
- chip->rxd[i].vbuf = va;
- chip->rxd[i].pbuf = cpu_to_le32(virt_to_phys(va));
- chip->rxd[i].ctrl = cpu_to_le64(FTMAC110_RXD_OWNER
- | FTMAC110_RXD_BUFSZ(CFG_XBUF_SIZE));
- }
- chip->rxd[i - 1].ctrl |= cpu_to_le64(FTMAC110_RXD_END);
- chip->rxd_idx = 0;
-
- eth_register(dev);
-
-#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
- int retval;
- struct mii_dev *mdiodev = mdio_alloc();
- if (!mdiodev)
- return -ENOMEM;
- strlcpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
- mdiodev->read = ftmac110_mdio_read;
- mdiodev->write = ftmac110_mdio_write;
-
- retval = mdio_register(mdiodev);
- if (retval < 0)
- return retval;
-#endif
-
- card_nr++;
-
- return card_nr;
-}
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