u-boot/drivers/net/ldpaa_eth/ldpaa_eth.c
Prabhakar Kushwaha 7b2edb8b9d driver: net: ldpaa_eth: Set MAC address during interface open
Currently ldpaa ethernet driver rely on DPL file to statically configure
mac address for the DPNIs. It is not a correct approach.

Add support setting MAC address from env variable or Random MAC address.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2015-10-29 10:33:57 -07:00

644 lines
15 KiB
C

/*
* Copyright (C) 2014 Freescale Semiconductor
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/types.h>
#include <malloc.h>
#include <net.h>
#include <hwconfig.h>
#include <phy.h>
#include <linux/compat.h>
#include "ldpaa_eth.h"
#undef CONFIG_PHYLIB
static int init_phy(struct eth_device *dev)
{
/*TODO for external PHY */
return 0;
}
static void ldpaa_eth_rx(struct ldpaa_eth_priv *priv,
const struct dpaa_fd *fd)
{
u64 fd_addr;
uint16_t fd_offset;
uint32_t fd_length;
struct ldpaa_fas *fas;
uint32_t status, err;
u32 timeo = (CONFIG_SYS_HZ * 2) / 1000;
u32 time_start;
struct qbman_release_desc releasedesc;
struct qbman_swp *swp = dflt_dpio->sw_portal;
fd_addr = ldpaa_fd_get_addr(fd);
fd_offset = ldpaa_fd_get_offset(fd);
fd_length = ldpaa_fd_get_len(fd);
debug("Rx frame:data addr=0x%p size=0x%x\n", (u64 *)fd_addr, fd_length);
if (fd->simple.frc & LDPAA_FD_FRC_FASV) {
/* Read the frame annotation status word and check for errors */
fas = (struct ldpaa_fas *)
((uint8_t *)(fd_addr) +
priv->buf_layout.private_data_size);
status = le32_to_cpu(fas->status);
if (status & LDPAA_ETH_RX_ERR_MASK) {
printf("Rx frame error(s): 0x%08x\n",
status & LDPAA_ETH_RX_ERR_MASK);
goto error;
} else if (status & LDPAA_ETH_RX_UNSUPP_MASK) {
printf("Unsupported feature in bitmask: 0x%08x\n",
status & LDPAA_ETH_RX_UNSUPP_MASK);
goto error;
}
}
debug("Rx frame: To Upper layer\n");
net_process_received_packet((uint8_t *)(fd_addr) + fd_offset,
fd_length);
error:
flush_dcache_range(fd_addr, fd_addr + LDPAA_ETH_RX_BUFFER_SIZE);
qbman_release_desc_clear(&releasedesc);
qbman_release_desc_set_bpid(&releasedesc, dflt_dpbp->dpbp_attr.bpid);
time_start = get_timer(0);
do {
/* Release buffer into the QBMAN */
err = qbman_swp_release(swp, &releasedesc, &fd_addr, 1);
} while (get_timer(time_start) < timeo && err == -EBUSY);
if (err == -EBUSY)
printf("Rx frame: QBMAN buffer release fails\n");
return;
}
static int ldpaa_eth_pull_dequeue_rx(struct eth_device *dev)
{
struct ldpaa_eth_priv *priv = (struct ldpaa_eth_priv *)dev->priv;
const struct ldpaa_dq *dq;
const struct dpaa_fd *fd;
int i = 5, err = 0, status;
u32 timeo = (CONFIG_SYS_HZ * 2) / 1000;
u32 time_start;
static struct qbman_pull_desc pulldesc;
struct qbman_swp *swp = dflt_dpio->sw_portal;
while (--i) {
qbman_pull_desc_clear(&pulldesc);
qbman_pull_desc_set_numframes(&pulldesc, 1);
qbman_pull_desc_set_fq(&pulldesc, priv->rx_dflt_fqid);
err = qbman_swp_pull(swp, &pulldesc);
if (err < 0) {
printf("Dequeue frames error:0x%08x\n", err);
continue;
}
time_start = get_timer(0);
do {
dq = qbman_swp_dqrr_next(swp);
} while (get_timer(time_start) < timeo && !dq);
if (dq) {
/* Check for valid frame. If not sent a consume
* confirmation to QBMAN otherwise give it to NADK
* application and then send consume confirmation to
* QBMAN.
*/
status = (uint8_t)ldpaa_dq_flags(dq);
if ((status & LDPAA_DQ_STAT_VALIDFRAME) == 0) {
debug("Dequeue RX frames:");
debug("No frame delivered\n");
qbman_swp_dqrr_consume(swp, dq);
continue;
}
fd = ldpaa_dq_fd(dq);
/* Obtain FD and process it */
ldpaa_eth_rx(priv, fd);
qbman_swp_dqrr_consume(swp, dq);
break;
} else {
err = -ENODATA;
debug("No DQRR entries\n");
break;
}
}
return err;
}
static int ldpaa_eth_tx(struct eth_device *net_dev, void *buf, int len)
{
struct ldpaa_eth_priv *priv = (struct ldpaa_eth_priv *)net_dev->priv;
struct dpaa_fd fd;
u64 buffer_start;
int data_offset, err;
u32 timeo = (CONFIG_SYS_HZ * 10) / 1000;
u32 time_start;
struct qbman_swp *swp = dflt_dpio->sw_portal;
struct qbman_eq_desc ed;
struct qbman_release_desc releasedesc;
/* Setup the FD fields */
memset(&fd, 0, sizeof(fd));
data_offset = priv->tx_data_offset;
do {
err = qbman_swp_acquire(dflt_dpio->sw_portal,
dflt_dpbp->dpbp_attr.bpid,
&buffer_start, 1);
} while (err == -EBUSY);
if (err < 0) {
printf("qbman_swp_acquire() failed\n");
return -ENOMEM;
}
debug("TX data: malloc buffer start=0x%p\n", (u64 *)buffer_start);
memcpy(((uint8_t *)(buffer_start) + data_offset), buf, len);
flush_dcache_range(buffer_start, buffer_start +
LDPAA_ETH_RX_BUFFER_SIZE);
ldpaa_fd_set_addr(&fd, (u64)buffer_start);
ldpaa_fd_set_offset(&fd, (uint16_t)(data_offset));
ldpaa_fd_set_bpid(&fd, dflt_dpbp->dpbp_attr.bpid);
ldpaa_fd_set_len(&fd, len);
fd.simple.ctrl = LDPAA_FD_CTRL_ASAL | LDPAA_FD_CTRL_PTA |
LDPAA_FD_CTRL_PTV1;
qbman_eq_desc_clear(&ed);
qbman_eq_desc_set_no_orp(&ed, 0);
qbman_eq_desc_set_qd(&ed, priv->tx_qdid, priv->tx_flow_id, 0);
time_start = get_timer(0);
while (get_timer(time_start) < timeo) {
err = qbman_swp_enqueue(swp, &ed,
(const struct qbman_fd *)(&fd));
if (err != -EBUSY)
break;
}
if (err < 0) {
printf("error enqueueing Tx frame\n");
goto error;
}
return err;
error:
qbman_release_desc_clear(&releasedesc);
qbman_release_desc_set_bpid(&releasedesc, dflt_dpbp->dpbp_attr.bpid);
time_start = get_timer(0);
do {
/* Release buffer into the QBMAN */
err = qbman_swp_release(swp, &releasedesc, &buffer_start, 1);
} while (get_timer(time_start) < timeo && err == -EBUSY);
if (err == -EBUSY)
printf("TX data: QBMAN buffer release fails\n");
return err;
}
static int ldpaa_eth_open(struct eth_device *net_dev, bd_t *bd)
{
struct ldpaa_eth_priv *priv = (struct ldpaa_eth_priv *)net_dev->priv;
struct dpni_queue_attr rx_queue_attr;
int err;
if (net_dev->state == ETH_STATE_ACTIVE)
return 0;
/* DPNI initialization */
err = ldpaa_dpni_setup(priv);
if (err < 0)
goto err_dpni_setup;
err = ldpaa_dpbp_setup();
if (err < 0)
goto err_dpbp_setup;
/* DPNI binding DPBP */
err = ldpaa_dpni_bind(priv);
if (err)
goto err_bind;
err = dpni_add_mac_addr(dflt_mc_io, MC_CMD_NO_FLAGS,
priv->dpni_handle, net_dev->enetaddr);
if (err) {
printf("dpni_add_mac_addr() failed\n");
return err;
}
#ifdef CONFIG_PHYLIB
/* TODO Check this path */
err = phy_startup(priv->phydev);
if (err) {
printf("%s: Could not initialize\n", priv->phydev->dev->name);
return err;
}
#else
priv->phydev->speed = SPEED_1000;
priv->phydev->link = 1;
priv->phydev->duplex = DUPLEX_FULL;
#endif
err = dpni_enable(dflt_mc_io, MC_CMD_NO_FLAGS, priv->dpni_handle);
if (err < 0) {
printf("dpni_enable() failed\n");
return err;
}
/* TODO: support multiple Rx flows */
err = dpni_get_rx_flow(dflt_mc_io, MC_CMD_NO_FLAGS, priv->dpni_handle,
0, 0, &rx_queue_attr);
if (err) {
printf("dpni_get_rx_flow() failed\n");
goto err_rx_flow;
}
priv->rx_dflt_fqid = rx_queue_attr.fqid;
err = dpni_get_qdid(dflt_mc_io, MC_CMD_NO_FLAGS, priv->dpni_handle,
&priv->tx_qdid);
if (err) {
printf("dpni_get_qdid() failed\n");
goto err_qdid;
}
if (!priv->phydev->link)
printf("%s: No link.\n", priv->phydev->dev->name);
return priv->phydev->link ? 0 : -1;
err_qdid:
err_rx_flow:
dpni_disable(dflt_mc_io, MC_CMD_NO_FLAGS, priv->dpni_handle);
err_bind:
ldpaa_dpbp_free();
err_dpbp_setup:
dpni_close(dflt_mc_io, MC_CMD_NO_FLAGS, priv->dpni_handle);
err_dpni_setup:
return err;
}
static void ldpaa_eth_stop(struct eth_device *net_dev)
{
struct ldpaa_eth_priv *priv = (struct ldpaa_eth_priv *)net_dev->priv;
int err = 0;
if ((net_dev->state == ETH_STATE_PASSIVE) ||
(net_dev->state == ETH_STATE_INIT))
return;
/* Stop Tx and Rx traffic */
err = dpni_disable(dflt_mc_io, MC_CMD_NO_FLAGS, priv->dpni_handle);
if (err < 0)
printf("dpni_disable() failed\n");
#ifdef CONFIG_PHYLIB
phy_shutdown(priv->phydev);
#endif
ldpaa_dpbp_free();
dpni_reset(dflt_mc_io, MC_CMD_NO_FLAGS, priv->dpni_handle);
dpni_close(dflt_mc_io, MC_CMD_NO_FLAGS, priv->dpni_handle);
}
static void ldpaa_dpbp_drain_cnt(int count)
{
uint64_t buf_array[7];
void *addr;
int ret, i;
BUG_ON(count > 7);
do {
ret = qbman_swp_acquire(dflt_dpio->sw_portal,
dflt_dpbp->dpbp_attr.bpid,
buf_array, count);
if (ret < 0) {
printf("qbman_swp_acquire() failed\n");
return;
}
for (i = 0; i < ret; i++) {
addr = (void *)buf_array[i];
debug("Free: buffer addr =0x%p\n", addr);
free(addr);
}
} while (ret);
}
static void ldpaa_dpbp_drain(void)
{
int i;
for (i = 0; i < LDPAA_ETH_NUM_BUFS; i += 7)
ldpaa_dpbp_drain_cnt(7);
}
static int ldpaa_bp_add_7(uint16_t bpid)
{
uint64_t buf_array[7];
u8 *addr;
int i;
struct qbman_release_desc rd;
for (i = 0; i < 7; i++) {
addr = memalign(L1_CACHE_BYTES, LDPAA_ETH_RX_BUFFER_SIZE);
if (!addr) {
printf("addr allocation failed\n");
goto err_alloc;
}
memset(addr, 0x00, LDPAA_ETH_RX_BUFFER_SIZE);
flush_dcache_range((u64)addr,
(u64)(addr + LDPAA_ETH_RX_BUFFER_SIZE));
buf_array[i] = (uint64_t)addr;
debug("Release: buffer addr =0x%p\n", addr);
}
release_bufs:
/* In case the portal is busy, retry until successful.
* This function is guaranteed to succeed in a reasonable amount
* of time.
*/
do {
mdelay(1);
qbman_release_desc_clear(&rd);
qbman_release_desc_set_bpid(&rd, bpid);
} while (qbman_swp_release(dflt_dpio->sw_portal, &rd, buf_array, i));
return i;
err_alloc:
if (i)
goto release_bufs;
return 0;
}
static int ldpaa_dpbp_seed(uint16_t bpid)
{
int i;
int count;
for (i = 0; i < LDPAA_ETH_NUM_BUFS; i += 7) {
count = ldpaa_bp_add_7(bpid);
if (count < 7)
printf("Buffer Seed= %d\n", count);
}
return 0;
}
static int ldpaa_dpbp_setup(void)
{
int err;
err = dpbp_open(dflt_mc_io, MC_CMD_NO_FLAGS, dflt_dpbp->dpbp_attr.id,
&dflt_dpbp->dpbp_handle);
if (err) {
printf("dpbp_open() failed\n");
goto err_open;
}
err = dpbp_enable(dflt_mc_io, MC_CMD_NO_FLAGS, dflt_dpbp->dpbp_handle);
if (err) {
printf("dpbp_enable() failed\n");
goto err_enable;
}
err = dpbp_get_attributes(dflt_mc_io, MC_CMD_NO_FLAGS,
dflt_dpbp->dpbp_handle,
&dflt_dpbp->dpbp_attr);
if (err) {
printf("dpbp_get_attributes() failed\n");
goto err_get_attr;
}
err = ldpaa_dpbp_seed(dflt_dpbp->dpbp_attr.bpid);
if (err) {
printf("Buffer seeding failed for DPBP %d (bpid=%d)\n",
dflt_dpbp->dpbp_attr.id, dflt_dpbp->dpbp_attr.bpid);
goto err_seed;
}
return 0;
err_seed:
err_get_attr:
dpbp_disable(dflt_mc_io, MC_CMD_NO_FLAGS, dflt_dpbp->dpbp_handle);
err_enable:
dpbp_close(dflt_mc_io, MC_CMD_NO_FLAGS, dflt_dpbp->dpbp_handle);
err_open:
return err;
}
static void ldpaa_dpbp_free(void)
{
ldpaa_dpbp_drain();
dpbp_disable(dflt_mc_io, MC_CMD_NO_FLAGS, dflt_dpbp->dpbp_handle);
dpbp_reset(dflt_mc_io, MC_CMD_NO_FLAGS, dflt_dpbp->dpbp_handle);
dpbp_close(dflt_mc_io, MC_CMD_NO_FLAGS, dflt_dpbp->dpbp_handle);
}
static int ldpaa_dpni_setup(struct ldpaa_eth_priv *priv)
{
int err;
/* and get a handle for the DPNI this interface is associate with */
err = dpni_open(dflt_mc_io, MC_CMD_NO_FLAGS, priv->dpni_id,
&priv->dpni_handle);
if (err) {
printf("dpni_open() failed\n");
goto err_open;
}
err = dpni_get_attributes(dflt_mc_io, MC_CMD_NO_FLAGS,
priv->dpni_handle, &priv->dpni_attrs);
if (err) {
printf("dpni_get_attributes() failed (err=%d)\n", err);
goto err_get_attr;
}
/* Configure our buffers' layout */
priv->buf_layout.options = DPNI_BUF_LAYOUT_OPT_PARSER_RESULT |
DPNI_BUF_LAYOUT_OPT_FRAME_STATUS |
DPNI_BUF_LAYOUT_OPT_PRIVATE_DATA_SIZE;
priv->buf_layout.pass_parser_result = true;
priv->buf_layout.pass_frame_status = true;
priv->buf_layout.private_data_size = LDPAA_ETH_SWA_SIZE;
/* ...rx, ... */
err = dpni_set_rx_buffer_layout(dflt_mc_io, MC_CMD_NO_FLAGS,
priv->dpni_handle, &priv->buf_layout);
if (err) {
printf("dpni_set_rx_buffer_layout() failed");
goto err_buf_layout;
}
/* ... tx, ... */
priv->buf_layout.options &= ~DPNI_BUF_LAYOUT_OPT_PARSER_RESULT;
err = dpni_set_tx_buffer_layout(dflt_mc_io, MC_CMD_NO_FLAGS,
priv->dpni_handle, &priv->buf_layout);
if (err) {
printf("dpni_set_tx_buffer_layout() failed");
goto err_buf_layout;
}
/* ... tx-confirm. */
priv->buf_layout.options &= ~DPNI_BUF_LAYOUT_OPT_PRIVATE_DATA_SIZE;
err = dpni_set_tx_conf_buffer_layout(dflt_mc_io, MC_CMD_NO_FLAGS,
priv->dpni_handle,
&priv->buf_layout);
if (err) {
printf("dpni_set_tx_conf_buffer_layout() failed");
goto err_buf_layout;
}
/* Now that we've set our tx buffer layout, retrieve the minimum
* required tx data offset.
*/
err = dpni_get_tx_data_offset(dflt_mc_io, MC_CMD_NO_FLAGS,
priv->dpni_handle, &priv->tx_data_offset);
if (err) {
printf("dpni_get_tx_data_offset() failed\n");
goto err_data_offset;
}
/* Warn in case TX data offset is not multiple of 64 bytes. */
WARN_ON(priv->tx_data_offset % 64);
/* Accomodate SWA space. */
priv->tx_data_offset += LDPAA_ETH_SWA_SIZE;
debug("priv->tx_data_offset=%d\n", priv->tx_data_offset);
return 0;
err_data_offset:
err_buf_layout:
err_get_attr:
dpni_close(dflt_mc_io, MC_CMD_NO_FLAGS, priv->dpni_handle);
err_open:
return err;
}
static int ldpaa_dpni_bind(struct ldpaa_eth_priv *priv)
{
struct dpni_pools_cfg pools_params;
struct dpni_tx_flow_cfg dflt_tx_flow;
int err = 0;
pools_params.num_dpbp = 1;
pools_params.pools[0].dpbp_id = (uint16_t)dflt_dpbp->dpbp_attr.id;
pools_params.pools[0].buffer_size = LDPAA_ETH_RX_BUFFER_SIZE;
err = dpni_set_pools(dflt_mc_io, MC_CMD_NO_FLAGS, priv->dpni_handle,
&pools_params);
if (err) {
printf("dpni_set_pools() failed\n");
return err;
}
priv->tx_flow_id = DPNI_NEW_FLOW_ID;
memset(&dflt_tx_flow, 0, sizeof(dflt_tx_flow));
dflt_tx_flow.options = DPNI_TX_FLOW_OPT_ONLY_TX_ERROR;
dflt_tx_flow.conf_err_cfg.use_default_queue = 0;
dflt_tx_flow.conf_err_cfg.errors_only = 1;
err = dpni_set_tx_flow(dflt_mc_io, MC_CMD_NO_FLAGS, priv->dpni_handle,
&priv->tx_flow_id, &dflt_tx_flow);
if (err) {
printf("dpni_set_tx_flow() failed\n");
return err;
}
return 0;
}
static int ldpaa_eth_netdev_init(struct eth_device *net_dev)
{
int err;
struct ldpaa_eth_priv *priv = (struct ldpaa_eth_priv *)net_dev->priv;
sprintf(net_dev->name, "DPNI%d", priv->dpni_id);
net_dev->iobase = 0;
net_dev->init = ldpaa_eth_open;
net_dev->halt = ldpaa_eth_stop;
net_dev->send = ldpaa_eth_tx;
net_dev->recv = ldpaa_eth_pull_dequeue_rx;
/*
TODO: PHY MDIO information
priv->bus = info->bus;
priv->phyaddr = info->phy_addr;
priv->enet_if = info->enet_if;
*/
if (init_phy(net_dev))
return 0;
err = eth_register(net_dev);
if (err < 0) {
printf("eth_register() = %d\n", err);
return err;
}
return 0;
}
int ldpaa_eth_init(struct dprc_obj_desc obj_desc)
{
struct eth_device *net_dev = NULL;
struct ldpaa_eth_priv *priv = NULL;
int err = 0;
/* Net device */
net_dev = (struct eth_device *)malloc(sizeof(struct eth_device));
if (!net_dev) {
printf("eth_device malloc() failed\n");
return -ENOMEM;
}
memset(net_dev, 0, sizeof(struct eth_device));
/* alloc the ldpaa ethernet private struct */
priv = (struct ldpaa_eth_priv *)malloc(sizeof(struct ldpaa_eth_priv));
if (!priv) {
printf("ldpaa_eth_priv malloc() failed\n");
return -ENOMEM;
}
memset(priv, 0, sizeof(struct ldpaa_eth_priv));
net_dev->priv = (void *)priv;
priv->net_dev = (struct eth_device *)net_dev;
priv->dpni_id = obj_desc.id;
err = ldpaa_eth_netdev_init(net_dev);
if (err)
goto err_netdev_init;
debug("ldpaa ethernet: Probed interface %s\n", net_dev->name);
return 0;
err_netdev_init:
free(priv);
net_dev->priv = NULL;
free(net_dev);
return err;
}