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ethercat
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initial port of genet for 6.1

This commit is contained in:
Bjarne von Horn 2023-08-30 16:08:41 +02:00
parent 3e303865f1
commit d9e12d8d82
5 changed files with 151 additions and 46 deletions
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2
devices/genet/Kbuild.in
View File

@ -46,7 +46,7 @@ ifeq (@ENABLE_GENET@,1)
bcmmii-@KERNEL_GENET@-ethercat.o \
bcmgenet_wol-@KERNEL_GENET@-ethercat.o
CFLAGS_bcmgenet-@KERNEL_GENET@-ethercat.o = -DREV=$(REV)
CFLAGS_bcmgenet-@KERNEL_GENET@-ethercat.o = -DREV="\"$(REV)\""
endif
KBUILD_EXTRA_SYMBOLS := \

184
devices/genet/bcmgenet-6.1-ethercat.c
View File

@ -39,7 +39,7 @@
#include <asm/unaligned.h>
#include "bcmgenet.h"
#include "bcmgenet-6.1-ethercat.h"
/* Maximum number of hardware queues, downsized if needed */
#define GENET_MAX_MQ_CNT 4
@ -1897,7 +1897,8 @@ static unsigned int __bcmgenet_tx_reclaim(struct net_device *dev,
if (skb) {
pkts_compl++;
bytes_compl += GENET_CB(skb)->bytes_sent;
dev_consume_skb_any(skb);
if (!priv->ecdev)
dev_consume_skb_any(skb);
}
txbds_processed++;
@ -1913,8 +1914,9 @@ static unsigned int __bcmgenet_tx_reclaim(struct net_device *dev,
ring->packets += pkts_compl;
ring->bytes += bytes_compl;
netdev_tx_completed_queue(netdev_get_tx_queue(dev, ring->queue),
pkts_compl, bytes_compl);
if (!priv->ecdev)
netdev_tx_completed_queue(netdev_get_tx_queue(dev, ring->queue),
pkts_compl, bytes_compl);
return txbds_processed;
}
@ -1940,15 +1942,17 @@ static int bcmgenet_tx_poll(struct napi_struct *napi, int budget)
spin_lock(&ring->lock);
work_done = __bcmgenet_tx_reclaim(ring->priv->dev, ring);
if (ring->free_bds > (MAX_SKB_FRAGS + 1)) {
if (!ring->priv->ecdev && ring->free_bds > (MAX_SKB_FRAGS + 1)) {
txq = netdev_get_tx_queue(ring->priv->dev, ring->queue);
netif_tx_wake_queue(txq);
}
spin_unlock(&ring->lock);
if (work_done == 0) {
napi_complete(napi);
ring->int_enable(ring);
if (!ring->priv->ecdev) {
napi_complete(napi);
ring->int_enable(ring);
}
return 0;
}
@ -2072,7 +2076,7 @@ static netdev_tx_t bcmgenet_xmit(struct sk_buff *skb, struct net_device *dev)
spin_lock(&ring->lock);
if (ring->free_bds <= (nr_frags + 1)) {
if (!netif_tx_queue_stopped(txq)) {
if (!priv->ecdev && !netif_tx_queue_stopped(txq)) {
netif_tx_stop_queue(txq);
netdev_err(dev,
"%s: tx ring %d full when queue %d awake\n",
@ -2152,12 +2156,14 @@ static netdev_tx_t bcmgenet_xmit(struct sk_buff *skb, struct net_device *dev)
ring->prod_index += nr_frags + 1;
ring->prod_index &= DMA_P_INDEX_MASK;
netdev_tx_sent_queue(txq, GENET_CB(skb)->bytes_sent);
if (!priv->ecdev) {
netdev_tx_sent_queue(txq, GENET_CB(skb)->bytes_sent);
if (ring->free_bds <= (MAX_SKB_FRAGS + 1))
netif_tx_stop_queue(txq);
if (ring->free_bds <= (MAX_SKB_FRAGS + 1))
netif_tx_stop_queue(txq);
}
if (!netdev_xmit_more() || netif_xmit_stopped(txq))
if (priv->ecdev || !netdev_xmit_more() || netif_xmit_stopped(txq))
/* Packets are ready, update producer index */
bcmgenet_tdma_ring_writel(priv, ring->index,
ring->prod_index, TDMA_PROD_INDEX);
@ -2176,7 +2182,8 @@ out_unmap_frags:
bcmgenet_free_tx_cb(kdev, tx_cb_ptr);
}
dev_kfree_skb(skb);
if (!priv->ecdev)
dev_kfree_skb(skb);
goto out;
}
@ -2280,7 +2287,10 @@ static unsigned int bcmgenet_desc_rx(struct bcmgenet_rx_ring *ring,
__be16 rx_csum;
cb = &priv->rx_cbs[ring->read_ptr];
skb = bcmgenet_rx_refill(priv, cb);
if (priv->ecdev)
skb = cb->skb;
else
skb = bcmgenet_rx_refill(priv, cb);
if (unlikely(!skb)) {
ring->dropped++;
@ -2312,7 +2322,8 @@ static unsigned int bcmgenet_desc_rx(struct bcmgenet_rx_ring *ring,
netif_err(priv, rx_status, dev, "oversized packet\n");
dev->stats.rx_length_errors++;
dev->stats.rx_errors++;
dev_kfree_skb_any(skb);
if (!priv->ecdev)
dev_kfree_skb_any(skb);
goto next;
}
@ -2320,7 +2331,8 @@ static unsigned int bcmgenet_desc_rx(struct bcmgenet_rx_ring *ring,
netif_err(priv, rx_status, dev,
"dropping fragmented packet!\n");
ring->errors++;
dev_kfree_skb_any(skb);
if (!priv->ecdev)
dev_kfree_skb_any(skb);
goto next;
}
@ -2341,18 +2353,22 @@ static unsigned int bcmgenet_desc_rx(struct bcmgenet_rx_ring *ring,
if (dma_flag & DMA_RX_LG)
dev->stats.rx_length_errors++;
dev->stats.rx_errors++;
dev_kfree_skb_any(skb);
if (!priv->ecdev)
dev_kfree_skb_any(skb);
goto next;
} /* error packet */
skb_put(skb, len);
if (!priv->ecdev) {
skb_put(skb, len);
/* remove RSB and hardware 2bytes added for IP alignment */
skb_pull(skb, 66);
/* remove RSB and hardware 2bytes added for IP alignment */
skb_pull(skb, 66);
}
len -= 66;
if (priv->crc_fwd_en) {
skb_trim(skb, len - ETH_FCS_LEN);
if (!priv->ecdev)
skb_trim(skb, len - ETH_FCS_LEN);
len -= ETH_FCS_LEN;
}
@ -2365,8 +2381,19 @@ static unsigned int bcmgenet_desc_rx(struct bcmgenet_rx_ring *ring,
if (dma_flag & DMA_RX_MULT)
dev->stats.multicast++;
/* Notify kernel */
napi_gro_receive(&ring->napi, skb);
if (priv->ecdev) {
// dma_addr_t mapping;
const unsigned char *data = skb->data + 66;
ecdev_receive(priv->ecdev, data, len);
/* re-write dma address to device. does it have side effects?
mapping = dma_unmap_addr(cb, dma_addr);
dmadesc_set_addr(priv, cb->bd_addr, mapping);
*/
} else {
/* Notify kernel */
napi_gro_receive(&ring->napi, skb);
}
netif_dbg(priv, rx_status, dev, "pushed up to kernel\n");
next:
@ -2396,12 +2423,12 @@ static int bcmgenet_rx_poll(struct napi_struct *napi, int budget)
work_done = bcmgenet_desc_rx(ring, budget);
if (work_done < budget) {
if (work_done < budget && !ring->priv->ecdev) {
napi_complete_done(napi, work_done);
ring->int_enable(ring);
}
if (ring->dim.use_dim) {
if (ring->dim.use_dim && !ring->priv->ecdev) {
dim_update_sample(ring->dim.event_ctr, ring->dim.packets,
ring->dim.bytes, &dim_sample);
net_dim(&ring->dim.dim, dim_sample);
@ -2410,6 +2437,28 @@ static int bcmgenet_rx_poll(struct napi_struct *napi, int budget)
return work_done;
}
/**
* ec_poll - EtherCAT poll routine
* @netdev: net device structure
*
* This function can never fail.
*
**/
static void ec_poll(struct net_device *netdev)
{
struct bcmgenet_priv *priv = netdev_priv(netdev);
unsigned i;
int budget = 64;
bcmgenet_tx_reclaim_all(netdev);
for (i = 0; i < priv->hw_params->rx_queues; i++) {
bcmgenet_desc_rx(&priv->rx_rings[i], budget);
}
bcmgenet_desc_rx(&priv->rx_rings[DESC_INDEX], budget);
}
static void bcmgenet_dim_work(struct work_struct *work)
{
struct dim *dim = container_of(work, struct dim, work);
@ -2610,6 +2659,9 @@ static void bcmgenet_init_rx_coalesce(struct bcmgenet_rx_ring *ring)
usecs = ring->rx_coalesce_usecs;
pkts = ring->rx_max_coalesced_frames;
if (ring->priv->ecdev)
return;
/* If DIM was enabled, re-apply default parameters */
if (dim->use_dim) {
moder = net_dim_get_def_rx_moderation(dim->dim.mode);
@ -2676,7 +2728,8 @@ static void bcmgenet_init_tx_ring(struct bcmgenet_priv *priv,
DMA_END_ADDR);
/* Initialize Tx NAPI */
netif_napi_add_tx(priv->dev, &ring->napi, bcmgenet_tx_poll);
if (!priv->ecdev)
netif_napi_add_tx(priv->dev, &ring->napi, bcmgenet_tx_poll);
}
/* Initialize a RDMA ring */
@ -2712,7 +2765,8 @@ static int bcmgenet_init_rx_ring(struct bcmgenet_priv *priv,
bcmgenet_init_rx_coalesce(ring);
/* Initialize Rx NAPI */
netif_napi_add(priv->dev, &ring->napi, bcmgenet_rx_poll);
if (!priv->ecdev)
netif_napi_add(priv->dev, &ring->napi, bcmgenet_rx_poll);
bcmgenet_rdma_ring_writel(priv, index, 0, RDMA_PROD_INDEX);
bcmgenet_rdma_ring_writel(priv, index, 0, RDMA_CONS_INDEX);
@ -2742,6 +2796,9 @@ static void bcmgenet_enable_tx_napi(struct bcmgenet_priv *priv)
unsigned int i;
struct bcmgenet_tx_ring *ring;
if (priv->ecdev)
return;
for (i = 0; i < priv->hw_params->tx_queues; ++i) {
ring = &priv->tx_rings[i];
napi_enable(&ring->napi);
@ -2758,6 +2815,9 @@ static void bcmgenet_disable_tx_napi(struct bcmgenet_priv *priv)
unsigned int i;
struct bcmgenet_tx_ring *ring;
if (priv->ecdev)
return;
for (i = 0; i < priv->hw_params->tx_queues; ++i) {
ring = &priv->tx_rings[i];
napi_disable(&ring->napi);
@ -2772,6 +2832,9 @@ static void bcmgenet_fini_tx_napi(struct bcmgenet_priv *priv)
unsigned int i;
struct bcmgenet_tx_ring *ring;
if (priv->ecdev)
return;
for (i = 0; i < priv->hw_params->tx_queues; ++i) {
ring = &priv->tx_rings[i];
netif_napi_del(&ring->napi);
@ -2855,6 +2918,9 @@ static void bcmgenet_enable_rx_napi(struct bcmgenet_priv *priv)
unsigned int i;
struct bcmgenet_rx_ring *ring;
if (priv->ecdev)
return;
for (i = 0; i < priv->hw_params->rx_queues; ++i) {
ring = &priv->rx_rings[i];
napi_enable(&ring->napi);
@ -2871,6 +2937,9 @@ static void bcmgenet_disable_rx_napi(struct bcmgenet_priv *priv)
unsigned int i;
struct bcmgenet_rx_ring *ring;
if (priv->ecdev)
return;
for (i = 0; i < priv->hw_params->rx_queues; ++i) {
ring = &priv->rx_rings[i];
napi_disable(&ring->napi);
@ -2887,6 +2956,9 @@ static void bcmgenet_fini_rx_napi(struct bcmgenet_priv *priv)
unsigned int i;
struct bcmgenet_rx_ring *ring;
if (priv->ecdev)
return;
for (i = 0; i < priv->hw_params->rx_queues; ++i) {
ring = &priv->rx_rings[i];
netif_napi_del(&ring->napi);
@ -3424,7 +3496,8 @@ static int bcmgenet_open(struct net_device *dev)
bcmgenet_netif_start(dev);
netif_tx_start_all_queues(dev);
if (!priv->ecdev)
netif_tx_start_all_queues(dev);
return 0;
@ -4148,10 +4221,21 @@ static int bcmgenet_probe(struct platform_device *pdev)
/* Turn off the main clock, WOL clock is handled separately */
clk_disable_unprepare(priv->clk);
err = register_netdev(dev);
if (err) {
bcmgenet_mii_exit(dev);
goto err;
priv->ecdev = ecdev_offer(dev, ec_poll, THIS_MODULE);
if (priv->ecdev) {
err = ecdev_open(priv->ecdev);
if (err) {
ecdev_withdraw(priv->ecdev);
priv->ecdev = NULL;
bcmgenet_mii_exit(dev);
goto err;
}
} else {
err = register_netdev(dev);
if (err) {
bcmgenet_mii_exit(dev);
goto err;
}
}
return err;
@ -4168,7 +4252,12 @@ static int bcmgenet_remove(struct platform_device *pdev)
struct bcmgenet_priv *priv = dev_to_priv(&pdev->dev);
dev_set_drvdata(&pdev->dev, NULL);
unregister_netdev(priv->dev);
if (priv->ecdev) {
ecdev_close(priv->ecdev);
ecdev_withdraw(priv->ecdev);
priv->ecdev = NULL;
} else
unregister_netdev(priv->dev);
bcmgenet_mii_exit(priv->dev);
free_netdev(priv->dev);
@ -4188,7 +4277,9 @@ static int bcmgenet_resume_noirq(struct device *d)
int ret;
u32 reg;
if (!netif_running(dev))
if (priv->ecdev)
ecdev_open(priv->ecdev);
else if (!netif_running(dev))
return 0;
/* Turn on the clock */
@ -4273,7 +4364,10 @@ static int bcmgenet_resume(struct device *d)
bcmgenet_netif_start(dev);
netif_device_attach(dev);
if (priv->ecdev)
ecdev_open(priv->ecdev);
else
netif_device_attach(dev);
return 0;
@ -4289,10 +4383,14 @@ static int bcmgenet_suspend(struct device *d)
struct net_device *dev = dev_get_drvdata(d);
struct bcmgenet_priv *priv = netdev_priv(dev);
if (!netif_running(dev))
return 0;
if (priv->ecdev) {
ecdev_close(priv->ecdev);
} else {
if (!netif_running(dev))
return 0;
netif_device_detach(dev);
netif_device_detach(dev);
}
bcmgenet_netif_stop(dev, true);
@ -4311,7 +4409,9 @@ static int bcmgenet_suspend_noirq(struct device *d)
struct bcmgenet_priv *priv = netdev_priv(dev);
int ret = 0;
if (!netif_running(dev))
if (priv->ecdev) {
ecdev_close(priv->ecdev);
} else if (!netif_running(dev))
return 0;
/* Prepare the device for Wake-on-LAN and switch to the slow clock */
@ -4354,7 +4454,7 @@ static struct platform_driver bcmgenet_driver = {
.remove = bcmgenet_remove,
.shutdown = bcmgenet_shutdown,
.driver = {
.name = "bcmgenet",
.name = "ec_bcmgenet",
.of_match_table = bcmgenet_match,
.pm = &bcmgenet_pm_ops,
.acpi_match_table = genet_acpi_match,
@ -4363,7 +4463,7 @@ static struct platform_driver bcmgenet_driver = {
module_platform_driver(bcmgenet_driver);
MODULE_AUTHOR("Broadcom Corporation");
MODULE_DESCRIPTION("Broadcom GENET Ethernet controller driver");
MODULE_ALIAS("platform:bcmgenet");
MODULE_DESCRIPTION("Broadcom GENET Ethernet controller driver "
"(EtherCAT enabled, Version " REV ")");
MODULE_LICENSE("GPL");
MODULE_SOFTDEP("pre: mdio-bcm-unimac");

7
devices/genet/bcmgenet-6.1-ethercat.h
View File

@ -16,7 +16,10 @@
#include <linux/dim.h>
#include <linux/ethtool.h>
#include "../unimac.h"
#include "unimac-6.1-ethercat.h"
/* EtherCAT header file */
#include "../ecdev.h"
/* total number of Buffer Descriptors, same for Rx/Tx */
#define TOTAL_DESC 256
@ -646,6 +649,8 @@ struct bcmgenet_priv {
struct bcmgenet_mib_counters mib;
struct ethtool_eee eee;
/* EtherCAT device variables */
ec_device_t *ecdev;
};
#define GENET_IO_MACRO(name, offset) \

2
devices/genet/bcmgenet_wol-6.1-ethercat.c
View File

@ -32,7 +32,7 @@
#include <linux/ipv6.h>
#include <linux/phy.h>
#include "bcmgenet.h"
#include "bcmgenet-6.1-ethercat.h"
/* ethtool function - get WOL (Wake on LAN) settings, Only Magic Packet
* Detection is supported through ethtool

2
devices/genet/bcmmii-6.1-ethercat.c
View File

@ -23,7 +23,7 @@
#include <linux/platform_data/bcmgenet.h>
#include <linux/platform_data/mdio-bcm-unimac.h>
#include "bcmgenet.h"
#include "bcmgenet-6.1-ethercat.h"
static void bcmgenet_mac_config(struct net_device *dev)
{