From d4fcf79423fc2f7205325340e708e441085a1a65 Mon Sep 17 00:00:00 2001 From: "luohui2320@gmail.com" Date: Wed, 27 Apr 2011 13:59:52 +0000 Subject: [PATCH] update at91sam9260 emac driver git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1387 bbd45198-f89e-11dd-88c7-29a3b14d5316 --- bsp/at91sam9260/macb.c | 129 ++++++++++++++++++++----------------- bsp/at91sam9260/rtconfig.h | 2 + 2 files changed, 72 insertions(+), 59 deletions(-) diff --git a/bsp/at91sam9260/macb.c b/bsp/at91sam9260/macb.c index e99aa03f9e..898a21d0d5 100755 --- a/bsp/at91sam9260/macb.c +++ b/bsp/at91sam9260/macb.c @@ -58,6 +58,9 @@ struct macb_dma_desc { #define MACB_RX_INT_FLAGS (MACB_BIT(RCOMP) | MACB_BIT(RXUBR) \ | MACB_BIT(ISR_ROVR)) +/* Duplex, half or full. */ +#define DUPLEX_HALF 0x00 +#define DUPLEX_FULL 0x01 #define MAX_ADDR_LEN 6 struct rt_macb_eth @@ -83,6 +86,12 @@ struct rt_macb_eth /* interface address info. */ rt_uint8_t dev_addr[MAX_ADDR_LEN]; /* hw address */ unsigned short phy_addr; + + struct rt_semaphore mdio_bus_lock; + rt_uint32_t speed; + rt_uint32_t duplex; + rt_uint32_t link; + struct rt_timer timer; }; static struct rt_macb_eth macb_device; static struct rt_semaphore sem_ack, sem_lock; @@ -100,14 +109,11 @@ static void rt_macb_isr(int irq) rt_device_t dev = &(macb->parent.parent); rt_uint32_t status, rsr, tsr; - //rt_kprintf("%s:irq enter\n", __func__); status = macb_readl(macb, ISR); while (status) { if (status & MACB_RX_INT_FLAGS) { - //rt_kprintf("macb recv isr\n"); - //macb_writel(macb, IDR, MACB_RX_INT_FLAGS); rsr = macb_readl(macb, RSR); macb_writel(macb, RSR, rsr); /* a frame has been received */ @@ -118,13 +124,11 @@ static void rt_macb_isr(int irq) if (status & (MACB_BIT(TCOMP) | MACB_BIT(ISR_TUND) | MACB_BIT(ISR_RLE))) { - //rt_kprintf("macb tx complete\n"); tsr = macb_readl(macb, TSR); macb_writel(macb, TSR, tsr); /* One packet sent complete */ rt_sem_release(&sem_ack); } - //macb_tx(bp); /* * Link change detection isn't possible with RMII, so we'll @@ -152,6 +156,7 @@ static void macb_mdio_write(struct rt_macb_eth *macb, rt_uint8_t reg, rt_uint16_ unsigned long netstat; unsigned long frame; + rt_sem_take(&macb->mdio_bus_lock, RT_WAITING_FOREVER); netctl = macb_readl(macb, NCR); netctl |= MACB_BIT(MPE); macb_writel(macb, NCR, netctl); @@ -171,6 +176,7 @@ static void macb_mdio_write(struct rt_macb_eth *macb, rt_uint8_t reg, rt_uint16_ netctl = macb_readl(macb, NCR); netctl &= ~MACB_BIT(MPE); macb_writel(macb, NCR, netctl); + rt_sem_release(&macb->mdio_bus_lock); } static rt_uint16_t macb_mdio_read(struct rt_macb_eth *macb, rt_uint8_t reg) @@ -179,6 +185,7 @@ static rt_uint16_t macb_mdio_read(struct rt_macb_eth *macb, rt_uint8_t reg) unsigned long netstat; unsigned long frame; + rt_sem_take(&macb->mdio_bus_lock, RT_WAITING_FOREVER); netctl = macb_readl(macb, NCR); netctl |= MACB_BIT(MPE); macb_writel(macb, NCR, netctl); @@ -199,6 +206,7 @@ static rt_uint16_t macb_mdio_read(struct rt_macb_eth *macb, rt_uint8_t reg) netctl = macb_readl(macb, NCR); netctl &= ~MACB_BIT(MPE); macb_writel(macb, NCR, netctl); + rt_sem_release(&macb->mdio_bus_lock); return MACB_BFEXT(DATA, frame); } @@ -232,7 +240,6 @@ static void macb_phy_reset(rt_device_t dev) static int macb_phy_init(rt_device_t dev) { - //struct eth_device *netdev = &macb->netdev; struct rt_macb_eth *macb = dev->user_data; rt_uint32_t ncfgr; rt_uint16_t phy_id, status, adv, lpa; @@ -251,7 +258,7 @@ static int macb_phy_init(rt_device_t dev) /* Try to re-negotiate if we don't have link already. */ macb_phy_reset(dev); - for (i = 0; i < MACB_LINK_TIMEOUT / 100; i++) { //modified by luohui@2009-11-27 CFG_MACB_AUTONEG_TIMEOUT + for (i = 0; i < MACB_LINK_TIMEOUT / 100; i++) { status = macb_mdio_read(macb, MII_BMSR); if (status & BMSR_LSTATUS) break; @@ -287,6 +294,45 @@ static int macb_phy_init(rt_device_t dev) } } +void macb_update_link(struct rt_macb_eth *macb) +{ + rt_device_t dev = &macb->parent.parent; + rt_uint32_t status, status_change = 0; + rt_uint32_t link; + rt_uint32_t media; + rt_uint16_t adv, lpa; + + status = macb_mdio_read(macb, MII_BMSR); + if ((status & BMSR_LSTATUS) == 0) + link = 0; + else + link = 1; + + if (link != macb->link) { + macb->link = link; + status_change = 1; + } + + if (status_change) { + if (macb->link) { + adv = macb_mdio_read(macb, MII_ADVERTISE); + lpa = macb_mdio_read(macb, MII_LPA); + media = mii_nway_result(lpa & adv); + macb->speed = (media & (ADVERTISE_100FULL | ADVERTISE_100HALF) + ? 100 : 10); + macb->duplex = (media & ADVERTISE_FULL) ? 1 : 0; + rt_kprintf("%s: link up (%dMbps/%s-duplex)\n", + dev->parent.name, macb->speed, + DUPLEX_FULL == macb->duplex ? "Full":"Half"); + netif_set_link_up(macb->parent.netif); + } else { + rt_kprintf("%s: link down\n", dev->parent.name); + netif_set_link_down(macb->parent.netif); + } + } + +} + /* RT-Thread Device Interface */ /* initialize the interface */ @@ -325,27 +371,17 @@ static rt_err_t rt_macb_init(rt_device_t dev) macb_writel(macb, TBQP, macb->tx_ring_dma); /* set hardware address */ - //hwaddr_bottom = cpu_to_le32(*((u32 *)netdev->enetaddr)); hwaddr_bottom = (*((rt_uint32_t *)macb->dev_addr)); macb_writel(macb, SA1B, hwaddr_bottom); - //hwaddr_top = cpu_to_le16(*((u16 *)(netdev->enetaddr + 4))); hwaddr_top = (*((rt_uint16_t *)(macb->dev_addr + 4))); macb_writel(macb, SA1T, hwaddr_top); /* choose RMII or MII mode. This depends on the board */ #ifdef CONFIG_RMII -#if defined(CONFIG_AVR32) - macb_writel(macb, USRIO, 0); -#else macb_writel(macb, USRIO, MACB_BIT(RMII) | MACB_BIT(CLKEN)); -#endif -#else -#if defined(CONFIG_AVR32) - macb_writel(macb, USRIO, MACB_BIT(MII)); #else macb_writel(macb, USRIO, MACB_BIT(CLKEN)); -#endif #endif /* CONFIG_RMII */ if (!macb_phy_init(dev)) @@ -367,6 +403,14 @@ static rt_err_t rt_macb_init(rt_device_t dev) /* instal interrupt */ rt_hw_interrupt_install(AT91SAM9260_ID_EMAC, rt_macb_isr, RT_NULL); rt_hw_interrupt_umask(AT91SAM9260_ID_EMAC); + + rt_timer_init(&macb->timer, "link_timer", + macb_update_link, + macb, + RT_TICK_PER_SECOND, + RT_TIMER_FLAG_PERIODIC); + + rt_timer_start(&macb->timer); return RT_EOK; } @@ -424,7 +468,6 @@ rt_err_t rt_macb_tx( rt_device_t dev, struct pbuf* p) /* lock macb device */ rt_sem_take(&sem_lock, RT_WAITING_FOREVER); - //rt_kprintf("macb tx enter, packetlen=%d\n", p->tot_len); buf = rt_malloc(p->tot_len); if (!buf) { rt_kprintf("%s:alloc buf failed\n", __func__); @@ -435,30 +478,8 @@ rt_err_t rt_macb_tx( rt_device_t dev, struct pbuf* p) for (q = p; q != NULL; q = q->next) { - //len = q->len; - //paddr = (unsigned long)q->payload; memcpy(bufptr, q->payload, q->len); bufptr += q->len; - - /* write data to device */ - /*ctrl = len & TXBUF_FRMLEN_MASK; - ctrl |= TXBUF_FRAME_END; - if (tx_head == (MACB_TX_RING_SIZE - 1)) { - ctrl |= TXBUF_WRAP; - macb->tx_head = 0; - } else - macb->tx_head++; - - macb->tx_ring[tx_head].ctrl = ctrl; - macb->tx_ring[tx_head].addr = paddr; - macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE) | MACB_BIT(TSTART));*/ - - /* - * I guess this is necessary because the networking core may - * re-use the transmit buffer as soon as we return... - */ - - } ctrl = p->tot_len & TXBUF_FRMLEN_MASK; @@ -472,10 +493,6 @@ rt_err_t rt_macb_tx( rt_device_t dev, struct pbuf* p) macb->tx_ring[tx_head].ctrl = ctrl; macb->tx_ring[tx_head].addr = (rt_uint32_t)buf; macb_writel(macb, NCR, MACB_BIT(TE) | MACB_BIT(RE) | MACB_BIT(TSTART)); - //rt_uint32_t netcr = macb_readl(macb, NCR); //e0: DMA bus error: HRESP not OK - //rt_kprintf("NCR = 0x%08x\n"); - //macb_writel(macb, NCR, netcr | MACB_BIT(TE) | MACB_BIT(RE) | MACB_BIT(TSTART)); - /* unlock macb device */ rt_sem_release(&sem_lock); @@ -506,7 +523,6 @@ static void reclaim_rx_buffers(struct rt_macb_eth *macb, i++; } - //barrier(); macb->rx_tail = new_tail; } @@ -518,18 +534,14 @@ struct pbuf *rt_macb_rx(rt_device_t dev) rt_uint32_t len; unsigned int rx_tail = macb->rx_tail; void *buffer; - //int length; int wrapped = 0; rt_uint32_t status; - //rt_uint8_t* data; struct pbuf* q; rt_uint8_t *buf = RT_NULL; - //rt_kprintf("macb rx enter\n"); /* lock macb device */ rt_sem_take(&sem_lock, RT_WAITING_FOREVER); - //rt_kprintf("macb rx enter2\n"); for (;;) { if (!(macb->rx_ring[rx_tail].addr & RXADDR_USED)) @@ -545,7 +557,6 @@ struct pbuf *rt_macb_rx(rt_device_t dev) if (status & RXBUF_FRAME_END) { buffer = macb->rx_buffer + 128 * macb->rx_tail; len = status & RXBUF_FRMLEN_MASK; - //rt_kprintf("%s:recv %d bytes\n", __func__, len); p = pbuf_alloc(PBUF_LINK, len, PBUF_RAM); if (!p) { @@ -588,9 +599,6 @@ struct pbuf *rt_macb_rx(rt_device_t dev) } } - - //NetReceive(buffer, length); - /* allocate buffer */ if (++rx_tail >= MACB_RX_RING_SIZE) rx_tail = 0; @@ -603,7 +611,6 @@ struct pbuf *rt_macb_rx(rt_device_t dev) } } } - /* unlock macb device */ rt_sem_release(&sem_lock); @@ -615,6 +622,11 @@ void macb_gpio_init() /* Pins used for MII and RMII */ at91_sys_write(AT91_PIOA + PIO_PDR, (1 << 19)|(1 << 17)|(1 << 14)|(1 << 15)|(1 << 18)|(1 << 16)|(1 << 12)|(1 << 13)|(1 << 21)|(1 << 20)); at91_sys_write(AT91_PIOA + PIO_ASR, (1 << 19)|(1 << 17)|(1 << 14)|(1 << 15)|(1 << 18)|(1 << 16)|(1 << 12)|(1 << 13)|(1 << 21)|(1 << 20)); + +#ifndef GONFIG_RMII + at91_sys_write(AT91_PIOA + PIO_PDR, (1 << 22)|(1 << 23)|(1 << 24)|(1 << 25)|(1 << 26)|(1 << 27)|(1 << 28)|(1 << 29)); + at91_sys_write(AT91_PIOA + PIO_ASR, (1 << 22)|(1 << 23)|(1 << 24)|(1 << 25)|(1 << 26)|(1 << 27)|(1 << 28)|(1 << 29)); +#endif } void macb_initialize() @@ -655,6 +667,7 @@ void rt_hw_macb_init() { at91_sys_write(AT91_PMC + AT91_PMC_PCER, 1 << AT91SAM9260_ID_EMAC); //enable macb clock macb_gpio_init(); + rt_memset(&macb_device, 0, sizeof(macb_device)); macb_initialize(); rt_sem_init(&sem_ack, "tx_ack", 1, RT_IPC_FLAG_FIFO); rt_sem_init(&sem_lock, "eth_lock", 1, RT_IPC_FLAG_FIFO); @@ -677,10 +690,8 @@ void rt_hw_macb_init() macb_device.parent.eth_rx = rt_macb_rx; macb_device.parent.eth_tx = rt_macb_tx; + rt_sem_init(&macb_device.mdio_bus_lock, "mdio_bus_lock", 1, RT_IPC_FLAG_FIFO); + eth_device_init(&(macb_device.parent), "e0"); - //eth_system_device_init(); - //set_if("192.168.1.30", "192.168.1.1", "255.255.255.0"); - /* instal interrupt */ - //rt_hw_interrupt_install(AT91SAM9260_ID_EMAC, rt_macb_isr, RT_NULL); - //rt_hw_interrupt_umask(AT91SAM9260_ID_EMAC); + } diff --git a/bsp/at91sam9260/rtconfig.h b/bsp/at91sam9260/rtconfig.h index 6a4fc68e6b..2d57f25989 100755 --- a/bsp/at91sam9260/rtconfig.h +++ b/bsp/at91sam9260/rtconfig.h @@ -123,6 +123,8 @@ #define RT_USING_LWIP #define RT_LWIP_DNS +#define LWIP_NETIF_LINK_CALLBACK 1 + /* Trace LwIP protocol */ // #define RT_LWIP_DEBUG