sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Completes first cut at Kinetis ethernet driver

Browse Source 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3889 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2011-08-17 16:24:47 +00:00
parent 94a3c61edb
commit b1edd6327a
6 changed files with 421 additions and 192 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/arm/src/kinetis/Make.defs
View File

@ -67,10 +67,6 @@ ifeq ($(CONFIG_GPIO_IRQ),y)
CHIP_CSRCS += kinetis_pinirq.c
endif
ifeq ($(CONFIG_KINETIS_DMA),y)
CHIP_CSRCS += kinetis_pindma.c
endif
ifeq ($(CONFIG_DEBUG_GPIO),y)
CHIP_CSRCS += kinetis_pindbg.c
endif
@ -84,7 +80,7 @@ CHIP_CSRCS += kinetis_usbhost.c
endif
ifeq ($(CONFIG_KINETIS_DMA),y)
CHIP_CSRCS += kinetis_dma.c
CHIP_CSRCS += kinetis_dma.c kinetis_pindma.c
endif
ifeq ($(CONFIG_NET),y)

7
arch/arm/src/kinetis/kinetis_config.h
View File

@ -186,8 +186,11 @@
/* Ethernet controller configuration */
#ifndef CONFIG_ENET_NBUFFERS
# define CONFIG_ENET_NBUFFERS 8
#ifndef CONFIG_ENET_NRXBUFFERS
# define CONFIG_ENET_NRXBUFFERS 6
#endif
#ifndef CONFIG_ENET_NTXBUFFERS
# define CONFIG_ENET_NTXBUFFERS 2
#endif
#ifndef CONFIG_ENET_PHYADDR

587
arch/arm/src/kinetis/kinetis_enet.c
View File

@ -42,6 +42,7 @@
#include <stdint.h>
#include <stdbool.h>
#include <unistd.h>
#include <time.h>
#include <string.h>
#include <debug.h>
@ -56,7 +57,11 @@
#include <net/uip/uip-arp.h>
#include <net/uip/uip-arch.h>
#include "up_arch.h"
#include "chip.h"
#include "kinetis_internal.h"
#include "kinetis_config.h"
#include "kinetis_pinmux.h"
#include "kinetis_sim.h"
#include "kinetis_mpu.h"
#include "kinetis_enet.h"
@ -72,7 +77,21 @@
*/
#if CONFIG_ENET_NETHIFS != 1
# error "CONFIG_ENET_NETHIFS must be one for now"
# error "CONFIG_ENET_NETHIFS must be one for now"
#endif
#if CONFIG_ENET_NTXBUFFERS < 1
# error "Need at least one TX buffer"
#endif
#if CONFIG_ENET_NRXBUFFERS < 1
# error "Need at least one RX buffer"
#endif
#define NENET_NBUFFERS (CONFIG_ENET_NTXBUFFERS+CONFIG_ENET_NRXBUFFERS)
#ifndef CONFIG_NET_MULTIBUFFER
# errror "CONFIG_NET_MULTIBUFFER is required in the configuration"
#endif
/* TX poll delay = 1 seconds. CLK_TCK is the number of clock ticks per second */
@ -95,15 +114,30 @@
#define PHY_DUPLEX_STATUS (4 << 2)
#define PHY_SPEED_STATUS (1 << 2)
/* Estimate the hold time to use based on the peripheral (bus) clock.
* BUS_FREQ = 48Mhz, hold time clocks = (2*48)/5 + 1 = 19.
/* Estimate the hold time to use based on the peripheral (bus) clock:
*
* HOLD_TIME = (2*BUS_FREQ_MHZ)/5 + 1
* = (BUS_FREQ)/2500000 + 1
*
* For example, if BUS_FREQ_MHZ=48 (MHz):
*
* HOLD_TIME = 48Mhz, hold time clocks
* = 48000000/2500000 + 1
* = 20
*/
#define KINETIS_MII_SPEED ((2*BOARD_BUS_FREQ)/5 + 1)
#define KINETIS_MII_SPEED (BOARD_BUS_FREQ/2500000 + 1)
#if KINETIS_MII_SPEED > 63
# error "KINETIS_MII_SPEED is out-of-range"
#endif
/* Interrupt groups */
#define RX_INTERRUPTS (ENET_INT_RXF | ENET_INT_RXB)
#define TX_INTERRUPTS ENET_INT_TXF
#define ERROR_INTERRUPTS (ENET_INT_UN | ENET_INT_RL | ENET_INT_LC | \
ENET_INT_EBERR | ENET_INT_BABT | ENET_INT_BABR)
/* This is a helper pointer for accessing the contents of the Ethernet header */
#define BUF ((struct uip_eth_hdr *)priv->dev.d_buf)
@ -111,6 +145,21 @@
/****************************************************************************
* Private Types
****************************************************************************/
/* EMAC statistics (debug only) */
#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_NET)
struct kinetis_statistics_s
{
uint32_t rx_packets; /* Number of packets received */
uint32_t tx_packets; /* Number of Tx packets queued */
unit32_t tx_done; /* Number of packets completed */
uint32_t tx_timeouts; /* Number of Tx timeout errors */
uint32_t errors; /* Number of error interrupts */
};
# define EMAC_STAT(priv,name) priv->stats.name++
#else
# define EMAC_STAT(priv,name)
#endif
/* The kinetis_driver_s encapsulates all state information for a single hardware
* interface
@ -118,30 +167,38 @@
struct kinetis_driver_s
{
bool bifup; /* true:ifup false:ifdown */
uint8_t nextdesc; /* The next descriptor to use */
WDOG_ID txpoll; /* TX poll timer */
WDOG_ID txtimeout; /* TX timeout timer */
struct enet_desc_s *g_txdesc; /* A pointer to the (single) TX descriptor */
struct enet_desc_s *priv->rxdesc; /* A pointer the list of RX descriptors */
bool bifup; /* true:ifup false:ifdown */
uint8_t txtail; /* The oldest busy TX descriptor */
uint8_t txhead; /* The next TX descriptor to use */
uint8_t rxtail; /* The next RX descriptor to use */
WDOG_ID txpoll; /* TX poll timer */
WDOG_ID txtimeout; /* TX timeout timer */
struct enet_desc_s *txdesc; /* A pointer to the list of TX descriptor */
struct enet_desc_s *rxdesc; /* A pointer to the list of RX descriptors */
/* This holds the information visible to uIP/NuttX */
struct uip_driver_s dev; /* Interface understood by uIP */
struct uip_driver_s dev; /* Interface understood by uIP */
/* Statistics */
#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_NET)
struct kinetis_statistics_s stats;
#endif
/* The DMA descriptors. A unaligned uint8_t is used to allocate the
* memory; 16 is added to assure that we can meet the desciptor alignment
* requirements; 1 is added for the single TX descriptor.
* requirements.
*/
uint8_t desc[((CONFIG_ENET_NTXBUFFERS+1) * sizeof(struct enet_desc_s)) + 16];
uint8_t desc[NENET_NBUFFERS * sizeof(struct enet_desc_s) + 16];
/* The DMA buffers. Again, A unaligned uint8_t is used to allocate the
* memory; 16 is added to assure that we can meet the desciptor alignment
* requirements.
*/
uint8_t rxbuffers[(CONFIG_ENET_NTXBUFFERS * CONFIG_NET_BUFSIZE) + 16];
uint8_t buffers[NENET_NBUFFERS * CONFIG_NET_BUFSIZE + 16];
};
/****************************************************************************
@ -160,11 +217,12 @@ static struct kinetis_driver_s g_enet[CONFIG_ENET_NETHIFS];
# define kinesis_swap16(value) (value)
#else
static inline uint32_t kinesis_swap32(uint32_t value);
static inline __asm int32_t kinesis_swap16(int16_t value);
static inline uint16_t kinesis_swap16(uint16_t value);
#endif
/* Common TX logic */
static bool kinetics_txringfull(FAR struct kinetis_driver_s *priv);
static int kinetis_transmit(FAR struct kinetis_driver_s *priv);
static int kinetis_uiptxpoll(struct uip_driver_s *dev);
@ -224,16 +282,62 @@ static inline uint32_t kinesis_swap32(uint32_t value)
{
uint32_t result = 0;
__asm volatile ("rev %0, %1":"=r" (result): "r"(value));
__asm__ __volatile__
(
"rev %0, %1"
:"=r" (result)
: "r"(value)
);
return result;
}
static inline __asm int32_t kinesis_swap16(int16_t value)
static inline uint16_t kinesis_swap16(uint16_t value)
{
revsh r0, r0 bx lr
uint16_t result = 0;
__asm__ __volatile__
(
"revsh %0, %1"
:"=r" (result)
: "r"(value)
);
return result;
}
#endif
/****************************************************************************
* Function: kinetics_txringfull
*
* Description:
* Check if all of the TX descriptors are in use.
*
* Parameters:
* priv - Reference to the driver state structure
*
* Returned Value:
* true is the TX ring is full; false if there are free slots at the
* head index.
*
****************************************************************************/
static bool kinetics_txringfull(FAR struct kinetis_driver_s *priv)
{
uint8_t txnext;
/* Check if there is room in the hardware to hold another outgoing
* packet. The ring is full if incrementing the head pointer would
* collide with the tail pointer.
*/
txnext = priv->txhead + 1;
if (txnext > CONFIG_ENET_NTXBUFFERS)
{
txnext = 0;
}
return priv->txtail == txnext;
}
/****************************************************************************
* Function: kinetis_transmit
*
@ -256,17 +360,49 @@ static inline __asm int32_t kinesis_swap16(int16_t value)
static int kinetis_transmit(FAR struct kinetis_driver_s *priv)
{
/* Verify that the hardware is ready to send another packet. If we get
* here, then we are committed to sending a packet; Higher level logic
* must have assured that there is not transmission in progress.
struct enet_desc_s *txdesc;
uint32_t regval;
/* When we get here the TX descriptor should show that the previous
* transfer has completed. If we get here, then we are committed to
* sending a packet; Higher level logic must have assured that there is
* no transmission in progress.
*/
txdesc = &priv->txdesc[priv->txhead];
priv->txhead++;
if (priv->txhead > CONFIG_ENET_NTXBUFFERS)
{
priv->txhead = 0;
}
DEBUGASSERT(priv->txtail != priv->txhead &&
(txdesc->status1 & TXDESC_R) == 0);
/* Increment statistics */
/* Send the packet: address=priv->dev.d_buf, length=priv->dev.d_len */
#warning "Missing logic"
EMAC_STAT(priv, tx_packets);
/* Enable Tx interrupts */
/* Setup the buffer descriptor for transmission: address=priv->dev.d_buf,
* length=priv->dev.d_len
*/
txdesc->length = kinesis_swap16(priv->dev.d_len);
#ifdef CONFIG_ENET_ENHANCEDBD
txdesc->bdu = 0x00000000;
txdesc->status2 = TXDESC_INT | TXDESC_TS; // | TXDESC_IINS | TXDESC_PINS;
#endif
txdesc->status1 = (TXDESC_R | TXDESC_L | TXDESC_TC | TXDESC_W);
/* Start the TX transfer (if it was not already waiting for buffers) */
putreg32(ENET_TDAR, KINETIS_ENET_TDAR);
/* Enable TX interrupts */
regval = getreg32(KINETIS_ENET_EIMR);
regval |= TX_INTERRUPTS;
putreg32(regval, KINETIS_ENET_EIMR);
/* Setup the TX timeout watchdog (perhaps restarting the timer) */
@ -314,7 +450,11 @@ static int kinetis_uiptxpoll(struct uip_driver_s *dev)
/* Check if there is room in the device to hold another packet. If not,
* return a non-zero value to terminate the poll.
*/
#warning "Missing logic"
if (kinetics_txringfull(priv))
{
return -EBUSY;
}
}
/* If zero is returned, the polling will continue until all connections have
@ -343,16 +483,36 @@ static int kinetis_uiptxpoll(struct uip_driver_s *dev)
static void kinetis_receive(FAR struct kinetis_driver_s *priv)
{
do
/* Loop while there are received packets to be processed */
while ((priv->rxdesc[priv->rxtail].status1 & RXDESC_E) != 0)
{
/* Check for errors and update statistics */
/* Update statistics */
/* Check if the packet is a valid size for the uIP buffer configuration */
EMAC_STAT(priv, rx_packets);
/* Copy the data data from the hardware to priv->dev.d_buf. Set
* amount of data in priv->dev.d_len
/* Copy the buffer pointer to priv->dev.d_buf. Set amount of data in
* priv->dev.d_len
*/
#warning "Missing logic"
priv->dev.d_len = kinesis_swap16(priv->rxdesc[priv->rxtail].length);
priv->dev.d_buf = (uint8_t*)kinesis_swap32((uint32_t)priv->rxdesc[priv->rxtail].data);
/* Doing this here could cause corruption! */
priv->rxdesc[priv->rxtail].status1 |= RXDESC_E;
/* Update the index to the next descriptor */
priv->rxtail++;
if (priv->rxtail >= CONFIG_ENET_NTXBUFFERS)
{
priv->rxtail = 0;
}
/* Indicate that there have been empty receive buffers produced */
putreg32(ENET_RDAR, KINETIS_ENET_RDAR);
/* We only accept IP packets of the configured type and ARP packets */
@ -370,17 +530,18 @@ static void kinetis_receive(FAR struct kinetis_driver_s *priv)
*/
if (priv->dev.d_len > 0)
{
uip_arp_out(&priv->dev);
kinetis_transmit(priv);
}
{
uip_arp_out(&priv->dev);
kinetis_transmit(priv);
}
}
else if (BUF->type == htons(UIP_ETHTYPE_ARP))
{
uip_arp_arpin(&priv->dev);
/* If the above function invocation resulted in data that should be
* sent out on the network, the field d_len will set to a value > 0.
/* If the above function invocation resulted in data that should
* be sent out on the network, the field d_len will set to a
* value > 0.
*/
if (priv->dev.d_len > 0)
@ -389,7 +550,6 @@ static void kinetis_receive(FAR struct kinetis_driver_s *priv)
}
}
}
while (); /* While there are more packets to be processed */
}
/****************************************************************************
@ -411,16 +571,44 @@ static void kinetis_receive(FAR struct kinetis_driver_s *priv)
static void kinetis_txdone(FAR struct kinetis_driver_s *priv)
{
/* Check for errors and update statistics */
struct enet_desc_s *txdesc;
uint32_t regval;
/* If no further xmits are pending, then cancel the TX timeout and
* disable further Tx interrupts.
/* Verify that the oldest descriptor descriptor completed */
txdesc = &priv->txdesc[priv->txtail];
if ((txdesc->status1 & TXDESC_R) == 0)
{
/* Yes.. bump up the tail pointer, making space for a new TX descriptor */
priv->txtail++;
if (priv->txtail > CONFIG_ENET_NTXBUFFERS)
{
priv->txtail = 0;
}
/* Update statistics */
EMAC_STAT(priv, tx_done);
}
/* Are there other transmissions queued? */
if (priv->txtail == priv->txhead)
{
/* No.. Cancel the TX timeout and disable further Tx interrupts. */
wd_cancel(priv->txtimeout);
regval = getreg32(KINETIS_ENET_EIMR);
regval &= ~TX_INTERRUPTS;
putreg32(regval, KINETIS_ENET_EIMR);
}
/* There should be space for a new TX in any event. Poll uIP for new XMIT
* data
*/
wd_cancel(priv->txtimeout);
/* Then poll uIP for new XMIT data */
(void)uip_poll(&priv->dev, kinetis_uiptxpoll);
}
@ -470,12 +658,6 @@ static int kinetis_interrupt(int irq, FAR void *context)
if ((pending & ENET_INT_TXF) != 0)
{
/* The Tx has completed. Mark the data pointer as NULL to indicate
* that the buffer is now free again.
*/
g_txdesc->data = NULL;
/* Call kinetis_txdone to handle the end of transfer even. NOTE that
* this may disable further Tx interrupts if there are no pending
* tansmissions.
@ -486,13 +668,15 @@ static int kinetis_interrupt(int irq, FAR void *context)
/* Check for errors */
if (pending &
(ENET_INT_UN | ENET_INT_RL | ENET_INT_LC | ENET_INT_EBERR |
ENET_INT_BABT | ENET_INT_BABR))
if (pending & ERROR_INTERRUPTS)
{
/* An error has occurred. Reinitialize all buffers. */
/* An error has occurred, update statistics */
kinetis_initbuffers();
EMAC_STAT(priv, errors);
/* Reinitialize all buffers. */
kinetis_initbuffers(priv);
/* Indicate that there have been empty receive buffers produced */
@ -527,8 +711,14 @@ static void kinetis_txtimeout(int argc, uint32_t arg, ...)
/* Increment statistics and dump debug info */
/* Then reset the hardware */
#warning "Missing logic"
EMAC_STAT(priv, tx_timeout);
/* Take the interface down and bring it back up. The is the most agressive
* hardware reset.
*/
(void)kinetis_ifup(&priv->dev);
(void)kinetis_ifdown(&priv->dev);
/* Then poll uIP for new XMIT data */
@ -557,19 +747,21 @@ static void kinetis_polltimer(int argc, uint32_t arg, ...)
{
FAR struct kinetis_driver_s *priv = (FAR struct kinetis_driver_s *)arg;
/* Check if there is room in the send another TX packet. We cannot perform
/* Check if there is there is a transmission in progress. We cannot perform
* the TX poll if he are unable to accept another packet for transmission.
*/
#warning "Missing logic"
/* If so, update TCP timing states and poll uIP for new XMIT data. Hmmm..
* might be bug here. Does this mean if there is a transmit in progress,
* we will missing TCP time state updates?
*/
if (!kinetics_txringfull(priv))
{
/* If so, update TCP timing states and poll uIP for new XMIT data. Hmmm..
* might be bug here. Does this mean if there is a transmit in progress,
* we will missing TCP time state updates?
*/
(void)uip_timer(&priv->dev, kinetis_uiptxpoll, KINETIS_POLLHSEC);
(void)uip_timer(&priv->dev, kinetis_uiptxpoll, KINETIS_POLLHSEC);
}
/* Setup the watchdog poll timer again */
/* Setup the watchdog poll timer again in any case */
(void)wd_start(priv->txpoll, KINETIS_WDDELAY, kinetis_polltimer, 1, arg);
}
@ -594,19 +786,89 @@ static void kinetis_polltimer(int argc, uint32_t arg, ...)
static int kinetis_ifup(struct uip_driver_s *dev)
{
FAR struct kinetis_driver_s *priv = (FAR struct kinetis_driver_s *)dev->d_private;
uint32_t regval;
ndbg("Bringing up: %d.%d.%d.%d\n",
dev->d_ipaddr & 0xff, (dev->d_ipaddr >> 8) & 0xff,
(dev->d_ipaddr >> 16) & 0xff, dev->d_ipaddr >> 24 );
/* Initialize PHYs, the Ethernet interface, and setup up Ethernet interrupts */
#warning "Missing logic"
/* Initialize ENET buffers */
kinetis_initbuffers(priv);
/* Reset and disable the interface */
kinetis_reset(priv);
/* Configure the MII interface */
kinetis_initmii(priv);
/* Clear the Individual and Group Address Hash registers */
putreg32(0, KINETIS_ENET_IALR);
putreg32(0, KINETIS_ENET_IAUR);
putreg32(0, KINETIS_ENET_GALR);
putreg32(0, KINETIS_ENET_GAUR);
/* Configure the PHY */
kinetis_initphy(priv);
/* Handle promiscuous mode */
#ifdef CONFIG_NET_PROMISCUOUS
regval = getreg32(KINETIS_ENET_RCR);
regval |= ENET_RCR_PROM;
putreg32(regval, KINETIS_ENET_RCR);
#endif
/* Select legacy of enhanced buffer descriptor format */
#ifdef CONFIG_ENET_ENHANCEDBD
putreg32(ENET_ECR_EN1588, KINETIS_ENET_ECR);
#else
putreg32(0, KINETIS_ENET_ECR);
#endif
/* Set the RX buffer size */
putreg32(CONFIG_NET_BUFSIZE, KINETIS_ENET_MRBR);
/* Point to the start of the circular RX buffer descriptor queue */
putreg32((uint32_t)priv->rxdesc, KINETIS_ENET_RDSR);
/* Point to the start of the circular TX buffer descriptor queue */
putreg32((uint32_t)priv->txdesc, KINETIS_ENET_TDSR);
/* Indicate that there have been empty receive buffers produced */
putreg32(ENET_RDAR, KINETIS_ENET_RDAR);
/* And enable the MAC itself */
regval = getreg32(KINETIS_ENET_ECR);
regval |= ENET_ECR_ETHEREN;
putreg32(regval, KINETIS_ENET_ECR);
/* Set and activate a timer process */
(void)wd_start(priv->txpoll, KINETIS_WDDELAY, kinetis_polltimer, 1, (uint32_t)priv);
/* Enable the Ethernet interrupts */
/* Clear all pending ENET interrupt */
putreg32(0xffffffff, KINETIS_ENET_EIR);
/* Enable RX and error interrupts at the controller (TX interrupts are
* still disabled).
*/
putreg32(RX_INTERRUPTS | ERROR_INTERRUPTS,
KINETIS_ENET_EIMR);
/* Mark the interrupt "up" and enable interrupts at the NVIC */
priv->bifup = true;
#if 0
@ -639,13 +901,14 @@ static int kinetis_ifdown(struct uip_driver_s *dev)
FAR struct kinetis_driver_s *priv = (FAR struct kinetis_driver_s *)dev->d_private;
irqstate_t flags;
/* Disable the Ethernet interrupt */
/* Disable the Ethernet interrupts at the NVIC */
flags = irqsave();
up_disable_irq(KINETIS_IRQ_EMACTMR);
up_disable_irq(KINETIS_IRQ_EMACTX);
up_disable_irq(KINETIS_IRQ_EMACRX);
up_disable_irq(KINETIS_IRQ_EMACMISC);
putreg32(0, KINETIS_ENET_EIMR);
/* Cancel the TX poll timer and TX timeout timers */
@ -656,7 +919,8 @@ static int kinetis_ifdown(struct uip_driver_s *dev)
* a known configuration that will guarantee the kinetis_ifup() always
* successfully brings the interface back up.
*/
#warning "Missing logic"
kinetis_reset(priv);
/* Mark the device "down" */
@ -699,11 +963,18 @@ static int kinetis_txavail(struct uip_driver_s *dev)
if (priv->bifup)
{
/* Check if there is room in the hardware to hold another outgoing packet. */
/* Check if there is room in the hardware to hold another outgoing
* packet.
*/
/* If so, then poll uIP for new XMIT data */
if (!kinetics_txringfull(priv))
{
/* No, there is space for another transfer. Poll uIP for new
* XMIT data.
*/
(void)uip_poll(&priv->dev, kinetis_uiptxpoll);
(void)uip_poll(&priv->dev, kinetis_uiptxpoll);
}
}
irqrestore(flags);
@ -912,7 +1183,7 @@ static int kinetis_readmii(struct kinetis_driver_s *priv, uint8_t phyaddr,
/* And return the MII data */
*data = (uint16_t)(getreg32(KINETIS_ENET_MMFR) & ENET_MMFR_DATA_MASK));
*data = (uint16_t)(getreg32(KINETIS_ENET_MMFR) & ENET_MMFR_DATA_MASK);
return OK;
}
@ -946,13 +1217,13 @@ static inline void kinetis_initphy(struct kinetis_driver_s *priv)
{
usleep(LINK_WAITUS);
phydata = 0xffff;
kinetis_readmii(priv, 0, CONFIG_ENET_PHYADDR, MII_PHYID1, &phydata);
kinetis_readmii(priv, CONFIG_ENET_PHYADDR, MII_PHYID1, &phydata);
}
while (phydata == 0xffff);
/* Start auto negotiation */
kinetis_writemii(priv, 0, CONFIG_ENET_PHYADDR, MII_MCR,
kinetis_writemii(priv, CONFIG_ENET_PHYADDR, MII_MCR,
(MII_MCR_ANRESTART | MII_MCR_ANENABLE));
/* Wait (potentially forever) for auto negotiation to complete */
@ -960,7 +1231,7 @@ static inline void kinetis_initphy(struct kinetis_driver_s *priv)
do
{
usleep(LINK_WAITUS);
kinetis_readmii(0, CONFIG_ENET_PHYADDR, MII_MSR, &phydata);
kinetis_readmii(priv, CONFIG_ENET_PHYADDR, MII_MSR, &phydata);
}
while ((phydata & MII_MSR_ANEGCOMPLETE) == 0);
@ -968,7 +1239,7 @@ static inline void kinetis_initphy(struct kinetis_driver_s *priv)
/* When we get here we have a link - Find the negotiated speed and duplex. */
phydata = 0;
kinetis_readmii(0, CONFIG_ENET_PHYADDR, PHY_STATUS, &phydata);
kinetis_readmii(priv, CONFIG_ENET_PHYADDR, PHY_STATUS, &phydata);
/* Set up the transmit and receive contrel registers based on the
* configuration and the auto negotiation results.
@ -981,7 +1252,7 @@ static inline void kinetis_initphy(struct kinetis_driver_s *priv)
rcr = ENET_RCR_RMII_MODE | ENET_RCR_CRCFWD |
CONFIG_NET_BUFSIZE << ENET_RCR_MAX_FL_SHIFT;
#endif
tcr = 0
tcr = 0;
putreg32(rcr, KINETIS_ENET_RCR);
putreg32(tcr, KINETIS_ENET_TCR);
@ -1005,7 +1276,7 @@ static inline void kinetis_initphy(struct kinetis_driver_s *priv)
{
/* 10Mbps */
ENET_RCR |= ENET_RCR_RMII_10T;
rcr |= ENET_RCR_RMII_10T;
}
putreg32(rcr, KINETIS_ENET_RCR);
@ -1031,40 +1302,44 @@ static inline void kinetis_initphy(struct kinetis_driver_s *priv)
static void kinetis_initbuffers(struct kinetis_driver_s *priv)
{
uintptr_t addr;
uint8_t *desc;
int i;
/* Get an aligned TX descriptor address */
/* Get an aligned TX descriptor (array)address */
addr = (uintptr_t)priv->desc + 0x0f) & ~0x0f;
g_txdesc = (struct enet_desc_s *)addr;
addr = ((uintptr_t)priv->desc + 0x0f) & ~0x0f;
priv->txdesc = (struct enet_desc_s *)addr;
/* Get an aligned RX descriptor (array) address */
addr += sizeof(struct enet_desc_s);
g_txdesc = (struct enet_desc_s *)addr;
addr += CONFIG_ENET_NTXBUFFERS * sizeof(struct enet_desc_s);
priv->txdesc = (struct enet_desc_s *)addr;
/* There is no TX buffer (the RX buffer is reused). */
/* Get the beginning of the first aligned buffer */
g_txdesc->length = 0;
g_txdesc->status1 = TXDESC_W;
#ifdef CONFIG_ENET_ENHANCEDBD
g_txdesc->status2 = TXDESC_IINS | TXDESC_PINS;
#endif
addr = ((uintptr_t)priv->buffers + 0x0f) & ~0x0f;
/* Get the beginning of the first aligned RX buffer */
addr = ((uintptr_t)priv->rxbuffers + 0x0f) & ~0x0f;
/* Then fill in the Rx descriptors */
/* Then fill in the TX descriptors */
for (i = 0; i < CONFIG_ENET_NTXBUFFERS; i++)
{
priv->txdesc[i].status1 = 0;
priv->txdesc[i].length = 0;
priv->txdesc[i].data = (uint8_t*)kinesis_swap32((uint32_t)addr);
#ifdef CONFIG_ENET_ENHANCEDBD
priv->txdesc[i].status2 = TXDESC_IINS | TXDESC_PINS;
#endif
addr += CONFIG_NET_BUFSIZE;
}
/* Then fill in the RX descriptors */
for (i = 0; i < CONFIG_ENET_NRXBUFFERS; i++)
{
priv->rxdesc[i].status1 = RXDESC_E;
priv->rxdesc[i].length = 0;
priv->rxdesc[i].data = (uint8_t*)kinesis_swap32((uint32_t)addr);
#ifdef CONFIG_ENET_ENHANCEDBD
priv->rxdesc[i].bdu = 0x00000000;
priv->rxdesc[i].bdu = 0;
priv->rxdesc[i].status2 = RXDESC_INT;
#endif
addr += CONFIG_NET_BUFSIZE;
@ -1072,11 +1347,14 @@ static void kinetis_initbuffers(struct kinetis_driver_s *priv)
/* Set the wrap bit in the last descriptors to form a ring */
priv->rxdesc[CONFIG_ENET_NTXBUFFERS - 1].status1 |= RXDESC_W;
priv->txdesc[CONFIG_ENET_NTXBUFFERS-1].status1 |= TXDESC_W;
priv->rxdesc[CONFIG_ENET_NRXBUFFERS-1].status1 |= RXDESC_W;
/* We start with descriptor 0 */
/* We start with RX descriptor 0 and with no TX descriptors in use */
priv->nextdesc = 0;
priv->txtail = 0;
priv->txhead = 0;
priv->rxtail = 0;
}
/****************************************************************************
@ -1116,7 +1394,7 @@ static void kinetis_reset(struct kinetis_driver_s *priv)
****************************************************************************/
/****************************************************************************
* Function: kinetis_initialize
* Function: kinetis_netinitialize
*
* Description:
* Initialize the Ethernet controller and driver
@ -1132,7 +1410,7 @@ static void kinetis_reset(struct kinetis_driver_s *priv)
*
****************************************************************************/
int kinetis_initialize(int intf)
int kinetis_netinitialize(int intf)
{
struct kinetis_driver_s *priv;
uint32_t regval;
@ -1145,7 +1423,7 @@ int kinetis_initialize(int intf)
/* Enable the ENET clock */
regval = getreg32(KINETIS_SIM_SCGC2);
regval |= SIM_SCGC2_ENET
regval |= SIM_SCGC2_ENET;
putreg32(regval, KINETIS_SIM_SCGC2);
/* Allow concurrent access to MPU controller. Example: ENET uDMA to SRAM,
@ -1154,18 +1432,6 @@ int kinetis_initialize(int intf)
putreg32(0, KINETIS_MPU_CESR);
/* Initialize ENET buffer */
kinetis_initbuffers(priv);
/* Reset and disable the interface */
kinetis_reset(priv);
/* Configure the MII interface */
kinetis_initmii(priv);
/* Configure all ENET/MII pins */
#if CONFIG_ENET_USEMII
@ -1213,6 +1479,7 @@ int kinetis_initialize(int intf)
{
/* We could not attach the ISR to the interrupt */
ndbg("Failed to attach EMACTMR IRQ\n");
return -EAGAIN;
}
#endif
@ -1223,6 +1490,7 @@ int kinetis_initialize(int intf)
{
/* We could not attach the ISR to the interrupt */
ndbg("Failed to attach EMACTX IRQ\n");
return -EAGAIN;
}
@ -1232,6 +1500,7 @@ int kinetis_initialize(int intf)
{
/* We could not attach the ISR to the interrupt */
ndbg("Failed to attach EMACRX IRQ\n");
return -EAGAIN;
}
@ -1241,52 +1510,10 @@ int kinetis_initialize(int intf)
{
/* We could not attach the ISR to the interrupt */
ndbg("Failed to attach EMACMISC IRQ\n");
return -EAGAIN;
}
/* Clear the Individual and Group Address Hash registers */
putreg32(0, KINETIS_ENET_IALR);
putreg32(0, KINETIS_ENET_IAUR);
putreg32(0, KINETIS_ENET_GALR);
putreg32(0, KINETIS_ENET_GAUR);
/* Configure the PHY */
kinetis_initphy(priv);
/* Handle promiscuous mode */
#ifdef CONFIG_NET_PROMISCUOUS
regval = getreg32(KINETIS_ENET_RCR);
regval |= ENET_RCR_PROM;
putreg32(regval, KINETIS_ENET_RCR);
#endif
/* Select legacy of enhanced buffer descriptor format */
#ifdef CONFIG_ENET_ENHANCEDBD
putreg32(ENET_ECR_EN1588, KINETIS_ENET_ECR);
#else
putreg32(0, KINETIS_ENET_ECR);
#endif
/* Set the RX buffer size */
putreg32(CONFIG_NET_BUFSIZE, KINETIS_ENET_MRBR);
/* Point to the start of the circular RX buffer descriptor queue */
putreg32((uint32_t)priv->rxdesc, KINETIS_ENET_RDSR);
/* Point to the single TX buffer descriptor */
putreg32((uint32_t)priv->txdesc, KINETIS_ENET_TDSR);
/* Indicate that there have been empty receive buffers produced */
putreg32(ENET_RDAR, KINETIS_ENET_RDAR);
/* Initialize the driver structure */
memset(priv, 0, sizeof(struct kinetis_driver_s));
@ -1297,28 +1524,12 @@ int kinetis_initialize(int intf)
priv->dev.d_addmac = kinetis_addmac; /* Add multicast MAC address */
priv->dev.d_rmmac = kinetis_rmmac; /* Remove multicast MAC address */
#endif
priv->dev.d_private = (void*)g_enet; /* Used to recover private state from dev */
priv->dev.d_private = (void*)g_enet; /* Used to recover private state from dev */
/* Create a watchdog for timing polling for and timing of transmisstions */
priv->txpoll = wd_create(); /* Create periodic poll timer */
priv->txtimeout = wd_create(); /* Create TX timeout timer */
/* Clear all pending ENET interrupt */
putreg32(0xffffffff, KINETIS_ENET_EIR);
/* Enable interrupts (interrupts are still disabled at the NVIC). */
putreg32(ENET_INT_BABR | ENET_INT_TXF | ENET_INT_RXF | ENET_INT_RXB |
ENET_INT_EBERR | ENET_INT_LC | ENET_INT_RL | ENET_INT_UN,
KINETIS_ENET_EIMR);
/* And enable the MAC itself */
regval = getreg32(KINETIS_ENET_ECR);
regval |= ENET_ECR_ETHEREN;
putreg32(regval, KINETIS_ENET_ECR);
priv->txpoll = wd_create(); /* Create periodic poll timer */
priv->txtimeout = wd_create(); /* Create TX timeout timer */
/* Put the interface in the down state. This usually amounts to resetting
* the device and/or calling kinetis_ifdown().
@ -1332,5 +1543,23 @@ int kinetis_initialize(int intf)
return OK;
}
/****************************************************************************
* Name: up_netinitialize
*
* Description:
* Initialize the first network interface. If there are more than one
* interface in the chip, then board-specific logic will have to provide
* this function to determine which, if any, Ethernet controllers should
* be initialized.
*
****************************************************************************/
#if CONFIG_ENET_NETHIFS == 1
void up_netinitialize(void)
{
(void)kinetis_netinitialize(0);
}
#endif
#endif /* KINETIS_NENET > 0 */
#endif /* CONFIG_NET && CONFIG_KINETIS_ENET */

5
arch/arm/src/kinetis/kinetis_enet.h
View File

@ -320,7 +320,7 @@
/* Receive FIFO Almost Empty Threshold */
#define ENET_RAEM_SHIFT (0) /* Bits 0-7: Value of the receive FIFO almost empty threshold */
#define ENET_RSEM_MASK (0xff << ENET_RAEM_SHIFT)
#define ENET_RAEM_MASK (0xff << ENET_RAEM_SHIFT)
/* Bits 8-31: Reserved */
/* Receive FIFO Almost Full Threshold */
@ -462,7 +462,7 @@
# define TXDESC_W (1 << 13) /* Common */
# define TXDESC_TO1 (1 << 14) /* Common */
# define TXDESC_R (1 << 15) /* Common */
#endif
#else
# define TXDESC_ABC (1 << 1) /* Legacy */
# define TXDESC_TC (1 << 2) /* Common */
# define TXDESC_L (1 << 3) /* Common */
@ -489,7 +489,6 @@
# define TXDESC_INT (1 << 30)
# define TXDESC_BDU (1 << 31)
#else
# define TXDESC_IINS (1 << 3)
# define TXDESC_PINS (1 << 4)

6
configs/twr-k60n512/README.txt
View File

@ -557,8 +557,10 @@ TWR-K60N512-specific Configuration Options
Kenetis ethernet controller settings
CONFIG_ENET_NBUFFERS - Number of TX/RX buffers. The size of one
buffer is determined by CONFIG_NET_BUFSIZE. Default: 8
CONFIG_ENET_NRXBUFFERS - Number of RX buffers. The size of one
buffer is determined by CONFIG_NET_BUFSIZE. Default: 6
CONFIG_ENET_NTXBUFFERS - Number of TX buffers. The size of one
buffer is determined by CONFIG_NET_BUFSIZE. Default: 2
CONFIG_ENET_USEMII - Usee MII mode. Default: RMII mode.
CONFIG_ENET_PHYADDR - PHY address

2
drivers/net/skeleton.c
View File

@ -163,7 +163,7 @@ static int skel_transmit(FAR struct skel_driver_s *skel)
{
/* Verify that the hardware is ready to send another packet. If we get
* here, then we are committed to sending a packet; Higher level logic
* must have assured that there is not transmission in progress.
* must have assured that there is no transmission in progress.
*/
/* Increment statistics */