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linux/drivers/net/ethernet/broadcom/asp2/bcmasp.c
Uwe Kleine-König d4295df3e0 net: ethernet: broadcom: Convert to platform remove callback returning void 
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new() which already returns void. Eventually after all drivers
are converted, .remove_new() is renamed to .remove().

Trivially convert these drivers from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2023-09-20 09:06:37 +01:00

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// SPDX-License-Identifier: GPL-2.0
/*
* Broadcom STB ASP 2.0 Driver
*
* Copyright (c) 2023 Broadcom
*/
#include <linux/etherdevice.h>
#include <linux/if_vlan.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/clk.h>
#include "bcmasp.h"
#include "bcmasp_intf_defs.h"
static void _intr2_mask_clear(struct bcmasp_priv *priv, u32 mask)
{
intr2_core_wl(priv, mask, ASP_INTR2_MASK_CLEAR);
priv->irq_mask &= ~mask;
}
static void _intr2_mask_set(struct bcmasp_priv *priv, u32 mask)
{
intr2_core_wl(priv, mask, ASP_INTR2_MASK_SET);
priv->irq_mask |= mask;
}
void bcmasp_enable_tx_irq(struct bcmasp_intf *intf, int en)
{
struct bcmasp_priv *priv = intf->parent;
if (en)
_intr2_mask_clear(priv, ASP_INTR2_TX_DESC(intf->channel));
else
_intr2_mask_set(priv, ASP_INTR2_TX_DESC(intf->channel));
}
EXPORT_SYMBOL_GPL(bcmasp_enable_tx_irq);
void bcmasp_enable_rx_irq(struct bcmasp_intf *intf, int en)
{
struct bcmasp_priv *priv = intf->parent;
if (en)
_intr2_mask_clear(priv, ASP_INTR2_RX_ECH(intf->channel));
else
_intr2_mask_set(priv, ASP_INTR2_RX_ECH(intf->channel));
}
EXPORT_SYMBOL_GPL(bcmasp_enable_rx_irq);
static void bcmasp_intr2_mask_set_all(struct bcmasp_priv *priv)
{
_intr2_mask_set(priv, 0xffffffff);
priv->irq_mask = 0xffffffff;
}
static void bcmasp_intr2_clear_all(struct bcmasp_priv *priv)
{
intr2_core_wl(priv, 0xffffffff, ASP_INTR2_CLEAR);
}
static void bcmasp_intr2_handling(struct bcmasp_intf *intf, u32 status)
{
if (status & ASP_INTR2_RX_ECH(intf->channel)) {
if (likely(napi_schedule_prep(&intf->rx_napi))) {
bcmasp_enable_rx_irq(intf, 0);
__napi_schedule_irqoff(&intf->rx_napi);
}
}
if (status & ASP_INTR2_TX_DESC(intf->channel)) {
if (likely(napi_schedule_prep(&intf->tx_napi))) {
bcmasp_enable_tx_irq(intf, 0);
__napi_schedule_irqoff(&intf->tx_napi);
}
}
}
static irqreturn_t bcmasp_isr(int irq, void *data)
{
struct bcmasp_priv *priv = data;
struct bcmasp_intf *intf;
u32 status;
status = intr2_core_rl(priv, ASP_INTR2_STATUS) &
~intr2_core_rl(priv, ASP_INTR2_MASK_STATUS);
intr2_core_wl(priv, status, ASP_INTR2_CLEAR);
if (unlikely(status == 0)) {
dev_warn(&priv->pdev->dev, "l2 spurious interrupt\n");
return IRQ_NONE;
}
/* Handle intferfaces */
list_for_each_entry(intf, &priv->intfs, list)
bcmasp_intr2_handling(intf, status);
return IRQ_HANDLED;
}
void bcmasp_flush_rx_port(struct bcmasp_intf *intf)
{
struct bcmasp_priv *priv = intf->parent;
u32 mask;
switch (intf->port) {
case 0:
mask = ASP_CTRL_UMAC0_FLUSH_MASK;
break;
case 1:
mask = ASP_CTRL_UMAC1_FLUSH_MASK;
break;
case 2:
mask = ASP_CTRL_SPB_FLUSH_MASK;
break;
default:
/* Not valid port */
return;
}
rx_ctrl_core_wl(priv, mask, priv->hw_info->rx_ctrl_flush);
}
static void bcmasp_netfilt_hw_en_wake(struct bcmasp_priv *priv,
struct bcmasp_net_filter *nfilt)
{
rx_filter_core_wl(priv, ASP_RX_FILTER_NET_OFFSET_L3_1(64),
ASP_RX_FILTER_NET_OFFSET(nfilt->hw_index));
rx_filter_core_wl(priv, ASP_RX_FILTER_NET_OFFSET_L2(32) |
ASP_RX_FILTER_NET_OFFSET_L3_0(32) |
ASP_RX_FILTER_NET_OFFSET_L3_1(96) |
ASP_RX_FILTER_NET_OFFSET_L4(32),
ASP_RX_FILTER_NET_OFFSET(nfilt->hw_index + 1));
rx_filter_core_wl(priv, ASP_RX_FILTER_NET_CFG_CH(nfilt->port + 8) |
ASP_RX_FILTER_NET_CFG_EN |
ASP_RX_FILTER_NET_CFG_L2_EN |
ASP_RX_FILTER_NET_CFG_L3_EN |
ASP_RX_FILTER_NET_CFG_L4_EN |
ASP_RX_FILTER_NET_CFG_L3_FRM(2) |
ASP_RX_FILTER_NET_CFG_L4_FRM(2) |
ASP_RX_FILTER_NET_CFG_UMC(nfilt->port),
ASP_RX_FILTER_NET_CFG(nfilt->hw_index));
rx_filter_core_wl(priv, ASP_RX_FILTER_NET_CFG_CH(nfilt->port + 8) |
ASP_RX_FILTER_NET_CFG_EN |
ASP_RX_FILTER_NET_CFG_L2_EN |
ASP_RX_FILTER_NET_CFG_L3_EN |
ASP_RX_FILTER_NET_CFG_L4_EN |
ASP_RX_FILTER_NET_CFG_L3_FRM(2) |
ASP_RX_FILTER_NET_CFG_L4_FRM(2) |
ASP_RX_FILTER_NET_CFG_UMC(nfilt->port),
ASP_RX_FILTER_NET_CFG(nfilt->hw_index + 1));
}
#define MAX_WAKE_FILTER_SIZE 256
enum asp_netfilt_reg_type {
ASP_NETFILT_MATCH = 0,
ASP_NETFILT_MASK,
ASP_NETFILT_MAX
};
static int bcmasp_netfilt_get_reg_offset(struct bcmasp_priv *priv,
struct bcmasp_net_filter *nfilt,
enum asp_netfilt_reg_type reg_type,
u32 offset)
{
u32 block_index, filter_sel;
if (offset < 32) {
block_index = ASP_RX_FILTER_NET_L2;
filter_sel = nfilt->hw_index;
} else if (offset < 64) {
block_index = ASP_RX_FILTER_NET_L2;
filter_sel = nfilt->hw_index + 1;
} else if (offset < 96) {
block_index = ASP_RX_FILTER_NET_L3_0;
filter_sel = nfilt->hw_index;
} else if (offset < 128) {
block_index = ASP_RX_FILTER_NET_L3_0;
filter_sel = nfilt->hw_index + 1;
} else if (offset < 160) {
block_index = ASP_RX_FILTER_NET_L3_1;
filter_sel = nfilt->hw_index;
} else if (offset < 192) {
block_index = ASP_RX_FILTER_NET_L3_1;
filter_sel = nfilt->hw_index + 1;
} else if (offset < 224) {
block_index = ASP_RX_FILTER_NET_L4;
filter_sel = nfilt->hw_index;
} else if (offset < 256) {
block_index = ASP_RX_FILTER_NET_L4;
filter_sel = nfilt->hw_index + 1;
} else {
return -EINVAL;
}
switch (reg_type) {
case ASP_NETFILT_MATCH:
return ASP_RX_FILTER_NET_PAT(filter_sel, block_index,
(offset % 32));
case ASP_NETFILT_MASK:
return ASP_RX_FILTER_NET_MASK(filter_sel, block_index,
(offset % 32));
default:
return -EINVAL;
}
}
static void bcmasp_netfilt_wr(struct bcmasp_priv *priv,
struct bcmasp_net_filter *nfilt,
enum asp_netfilt_reg_type reg_type,
u32 val, u32 offset)
{
int reg_offset;
/* HW only accepts 4 byte aligned writes */
if (!IS_ALIGNED(offset, 4) || offset > MAX_WAKE_FILTER_SIZE)
return;
reg_offset = bcmasp_netfilt_get_reg_offset(priv, nfilt, reg_type,
offset);
rx_filter_core_wl(priv, val, reg_offset);
}
static u32 bcmasp_netfilt_rd(struct bcmasp_priv *priv,
struct bcmasp_net_filter *nfilt,
enum asp_netfilt_reg_type reg_type,
u32 offset)
{
int reg_offset;
/* HW only accepts 4 byte aligned writes */
if (!IS_ALIGNED(offset, 4) || offset > MAX_WAKE_FILTER_SIZE)
return 0;
reg_offset = bcmasp_netfilt_get_reg_offset(priv, nfilt, reg_type,
offset);
return rx_filter_core_rl(priv, reg_offset);
}
static int bcmasp_netfilt_wr_m_wake(struct bcmasp_priv *priv,
struct bcmasp_net_filter *nfilt,
u32 offset, void *match, void *mask,
size_t size)
{
u32 shift, mask_val = 0, match_val = 0;
bool first_byte = true;
if ((offset + size) > MAX_WAKE_FILTER_SIZE)
return -EINVAL;
while (size--) {
/* The HW only accepts 4 byte aligned writes, so if we
* begin unaligned or if remaining bytes less than 4,
* we need to read then write to avoid losing current
* register state
*/
if (first_byte && (!IS_ALIGNED(offset, 4) || size < 3)) {
match_val = bcmasp_netfilt_rd(priv, nfilt,
ASP_NETFILT_MATCH,
ALIGN_DOWN(offset, 4));
mask_val = bcmasp_netfilt_rd(priv, nfilt,
ASP_NETFILT_MASK,
ALIGN_DOWN(offset, 4));
}
shift = (3 - (offset % 4)) * 8;
match_val &= ~GENMASK(shift + 7, shift);
mask_val &= ~GENMASK(shift + 7, shift);
match_val |= (u32)(*((u8 *)match) << shift);
mask_val |= (u32)(*((u8 *)mask) << shift);
/* If last byte or last byte of word, write to reg */
if (!size || ((offset % 4) == 3)) {
bcmasp_netfilt_wr(priv, nfilt, ASP_NETFILT_MATCH,
match_val, ALIGN_DOWN(offset, 4));
bcmasp_netfilt_wr(priv, nfilt, ASP_NETFILT_MASK,
mask_val, ALIGN_DOWN(offset, 4));
first_byte = true;
} else {
first_byte = false;
}
offset++;
match++;
mask++;
}
return 0;
}
static void bcmasp_netfilt_reset_hw(struct bcmasp_priv *priv,
struct bcmasp_net_filter *nfilt)
{
int i;
for (i = 0; i < MAX_WAKE_FILTER_SIZE; i += 4) {
bcmasp_netfilt_wr(priv, nfilt, ASP_NETFILT_MATCH, 0, i);
bcmasp_netfilt_wr(priv, nfilt, ASP_NETFILT_MASK, 0, i);
}
}
static void bcmasp_netfilt_tcpip4_wr(struct bcmasp_priv *priv,
struct bcmasp_net_filter *nfilt,
struct ethtool_tcpip4_spec *match,
struct ethtool_tcpip4_spec *mask,
u32 offset)
{
__be16 val_16, mask_16;
val_16 = htons(ETH_P_IP);
mask_16 = htons(0xFFFF);
bcmasp_netfilt_wr_m_wake(priv, nfilt, (ETH_ALEN * 2) + offset,
&val_16, &mask_16, sizeof(val_16));
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset + 1,
&match->tos, &mask->tos,
sizeof(match->tos));
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset + 12,
&match->ip4src, &mask->ip4src,
sizeof(match->ip4src));
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset + 16,
&match->ip4dst, &mask->ip4dst,
sizeof(match->ip4dst));
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset + 20,
&match->psrc, &mask->psrc,
sizeof(match->psrc));
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset + 22,
&match->pdst, &mask->pdst,
sizeof(match->pdst));
}
static void bcmasp_netfilt_tcpip6_wr(struct bcmasp_priv *priv,
struct bcmasp_net_filter *nfilt,
struct ethtool_tcpip6_spec *match,
struct ethtool_tcpip6_spec *mask,
u32 offset)
{
__be16 val_16, mask_16;
val_16 = htons(ETH_P_IPV6);
mask_16 = htons(0xFFFF);
bcmasp_netfilt_wr_m_wake(priv, nfilt, (ETH_ALEN * 2) + offset,
&val_16, &mask_16, sizeof(val_16));
val_16 = htons(match->tclass << 4);
mask_16 = htons(mask->tclass << 4);
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset,
&val_16, &mask_16, sizeof(val_16));
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset + 8,
&match->ip6src, &mask->ip6src,
sizeof(match->ip6src));
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset + 24,
&match->ip6dst, &mask->ip6dst,
sizeof(match->ip6dst));
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset + 40,
&match->psrc, &mask->psrc,
sizeof(match->psrc));
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset + 42,
&match->pdst, &mask->pdst,
sizeof(match->pdst));
}
static int bcmasp_netfilt_wr_to_hw(struct bcmasp_priv *priv,
struct bcmasp_net_filter *nfilt)
{
struct ethtool_rx_flow_spec *fs = &nfilt->fs;
unsigned int offset = 0;
__be16 val_16, mask_16;
u8 val_8, mask_8;
/* Currently only supports wake filters */
if (!nfilt->wake_filter)
return -EINVAL;
bcmasp_netfilt_reset_hw(priv, nfilt);
if (fs->flow_type & FLOW_MAC_EXT) {
bcmasp_netfilt_wr_m_wake(priv, nfilt, 0, &fs->h_ext.h_dest,
&fs->m_ext.h_dest,
sizeof(fs->h_ext.h_dest));
}
if ((fs->flow_type & FLOW_EXT) &&
(fs->m_ext.vlan_etype || fs->m_ext.vlan_tci)) {
bcmasp_netfilt_wr_m_wake(priv, nfilt, (ETH_ALEN * 2),
&fs->h_ext.vlan_etype,
&fs->m_ext.vlan_etype,
sizeof(fs->h_ext.vlan_etype));
bcmasp_netfilt_wr_m_wake(priv, nfilt, ((ETH_ALEN * 2) + 2),
&fs->h_ext.vlan_tci,
&fs->m_ext.vlan_tci,
sizeof(fs->h_ext.vlan_tci));
offset += VLAN_HLEN;
}
switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT)) {
case ETHER_FLOW:
bcmasp_netfilt_wr_m_wake(priv, nfilt, 0,
&fs->h_u.ether_spec.h_dest,
&fs->m_u.ether_spec.h_dest,
sizeof(fs->h_u.ether_spec.h_dest));
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_ALEN,
&fs->h_u.ether_spec.h_source,
&fs->m_u.ether_spec.h_source,
sizeof(fs->h_u.ether_spec.h_source));
bcmasp_netfilt_wr_m_wake(priv, nfilt, (ETH_ALEN * 2) + offset,
&fs->h_u.ether_spec.h_proto,
&fs->m_u.ether_spec.h_proto,
sizeof(fs->h_u.ether_spec.h_proto));
break;
case IP_USER_FLOW:
val_16 = htons(ETH_P_IP);
mask_16 = htons(0xFFFF);
bcmasp_netfilt_wr_m_wake(priv, nfilt, (ETH_ALEN * 2) + offset,
&val_16, &mask_16, sizeof(val_16));
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset + 1,
&fs->h_u.usr_ip4_spec.tos,
&fs->m_u.usr_ip4_spec.tos,
sizeof(fs->h_u.usr_ip4_spec.tos));
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset + 9,
&fs->h_u.usr_ip4_spec.proto,
&fs->m_u.usr_ip4_spec.proto,
sizeof(fs->h_u.usr_ip4_spec.proto));
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset + 12,
&fs->h_u.usr_ip4_spec.ip4src,
&fs->m_u.usr_ip4_spec.ip4src,
sizeof(fs->h_u.usr_ip4_spec.ip4src));
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset + 16,
&fs->h_u.usr_ip4_spec.ip4dst,
&fs->m_u.usr_ip4_spec.ip4dst,
sizeof(fs->h_u.usr_ip4_spec.ip4dst));
if (!fs->m_u.usr_ip4_spec.l4_4_bytes)
break;
/* Only supports 20 byte IPv4 header */
val_8 = 0x45;
mask_8 = 0xFF;
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset,
&val_8, &mask_8, sizeof(val_8));
bcmasp_netfilt_wr_m_wake(priv, nfilt,
ETH_HLEN + 20 + offset,
&fs->h_u.usr_ip4_spec.l4_4_bytes,
&fs->m_u.usr_ip4_spec.l4_4_bytes,
sizeof(fs->h_u.usr_ip4_spec.l4_4_bytes)
);
break;
case TCP_V4_FLOW:
val_8 = IPPROTO_TCP;
mask_8 = 0xFF;
bcmasp_netfilt_tcpip4_wr(priv, nfilt, &fs->h_u.tcp_ip4_spec,
&fs->m_u.tcp_ip4_spec, offset);
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset + 9,
&val_8, &mask_8, sizeof(val_8));
break;
case UDP_V4_FLOW:
val_8 = IPPROTO_UDP;
mask_8 = 0xFF;
bcmasp_netfilt_tcpip4_wr(priv, nfilt, &fs->h_u.udp_ip4_spec,
&fs->m_u.udp_ip4_spec, offset);
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset + 9,
&val_8, &mask_8, sizeof(val_8));
break;
case TCP_V6_FLOW:
val_8 = IPPROTO_TCP;
mask_8 = 0xFF;
bcmasp_netfilt_tcpip6_wr(priv, nfilt, &fs->h_u.tcp_ip6_spec,
&fs->m_u.tcp_ip6_spec, offset);
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset + 6,
&val_8, &mask_8, sizeof(val_8));
break;
case UDP_V6_FLOW:
val_8 = IPPROTO_UDP;
mask_8 = 0xFF;
bcmasp_netfilt_tcpip6_wr(priv, nfilt, &fs->h_u.udp_ip6_spec,
&fs->m_u.udp_ip6_spec, offset);
bcmasp_netfilt_wr_m_wake(priv, nfilt, ETH_HLEN + offset + 6,
&val_8, &mask_8, sizeof(val_8));
break;
}
bcmasp_netfilt_hw_en_wake(priv, nfilt);
return 0;
}
void bcmasp_netfilt_suspend(struct bcmasp_intf *intf)
{
struct bcmasp_priv *priv = intf->parent;
bool write = false;
int ret, i;
/* Write all filters to HW */
for (i = 0; i < NUM_NET_FILTERS; i++) {
/* If the filter does not match the port, skip programming. */
if (!priv->net_filters[i].claimed ||
priv->net_filters[i].port != intf->port)
continue;
if (i > 0 && (i % 2) &&
priv->net_filters[i].wake_filter &&
priv->net_filters[i - 1].wake_filter)
continue;
ret = bcmasp_netfilt_wr_to_hw(priv, &priv->net_filters[i]);
if (!ret)
write = true;
}
/* Successfully programmed at least one wake filter
* so enable top level wake config
*/
if (write)
rx_filter_core_wl(priv, (ASP_RX_FILTER_OPUT_EN |
ASP_RX_FILTER_LNR_MD |
ASP_RX_FILTER_GEN_WK_EN |
ASP_RX_FILTER_NT_FLT_EN),
ASP_RX_FILTER_BLK_CTRL);
}
int bcmasp_netfilt_get_all_active(struct bcmasp_intf *intf, u32 *rule_locs,
u32 *rule_cnt)
{
struct bcmasp_priv *priv = intf->parent;
int j = 0, i;
for (i = 0; i < NUM_NET_FILTERS; i++) {
if (j == *rule_cnt)
return -EMSGSIZE;
if (!priv->net_filters[i].claimed ||
priv->net_filters[i].port != intf->port)
continue;
if (i > 0 && (i % 2) &&
priv->net_filters[i].wake_filter &&
priv->net_filters[i - 1].wake_filter)
continue;
rule_locs[j++] = priv->net_filters[i].fs.location;
}
*rule_cnt = j;
return 0;
}
int bcmasp_netfilt_get_active(struct bcmasp_intf *intf)
{
struct bcmasp_priv *priv = intf->parent;
int cnt = 0, i;
for (i = 0; i < NUM_NET_FILTERS; i++) {
if (!priv->net_filters[i].claimed ||
priv->net_filters[i].port != intf->port)
continue;
/* Skip over a wake filter pair */
if (i > 0 && (i % 2) &&
priv->net_filters[i].wake_filter &&
priv->net_filters[i - 1].wake_filter)
continue;
cnt++;
}
return cnt;
}
bool bcmasp_netfilt_check_dup(struct bcmasp_intf *intf,
struct ethtool_rx_flow_spec *fs)
{
struct bcmasp_priv *priv = intf->parent;
struct ethtool_rx_flow_spec *cur;
size_t fs_size = 0;
int i;
for (i = 0; i < NUM_NET_FILTERS; i++) {
if (!priv->net_filters[i].claimed ||
priv->net_filters[i].port != intf->port)
continue;
cur = &priv->net_filters[i].fs;
if (cur->flow_type != fs->flow_type ||
cur->ring_cookie != fs->ring_cookie)
continue;
switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT)) {
case ETHER_FLOW:
fs_size = sizeof(struct ethhdr);
break;
case IP_USER_FLOW:
fs_size = sizeof(struct ethtool_usrip4_spec);
break;
case TCP_V6_FLOW:
case UDP_V6_FLOW:
fs_size = sizeof(struct ethtool_tcpip6_spec);
break;
case TCP_V4_FLOW:
case UDP_V4_FLOW:
fs_size = sizeof(struct ethtool_tcpip4_spec);
break;
default:
continue;
}
if (memcmp(&cur->h_u, &fs->h_u, fs_size) ||
memcmp(&cur->m_u, &fs->m_u, fs_size))
continue;
if (cur->flow_type & FLOW_EXT) {
if (cur->h_ext.vlan_etype != fs->h_ext.vlan_etype ||
cur->m_ext.vlan_etype != fs->m_ext.vlan_etype ||
cur->h_ext.vlan_tci != fs->h_ext.vlan_tci ||
cur->m_ext.vlan_tci != fs->m_ext.vlan_tci ||
cur->h_ext.data[0] != fs->h_ext.data[0])
continue;
}
if (cur->flow_type & FLOW_MAC_EXT) {
if (memcmp(&cur->h_ext.h_dest,
&fs->h_ext.h_dest, ETH_ALEN) ||
memcmp(&cur->m_ext.h_dest,
&fs->m_ext.h_dest, ETH_ALEN))
continue;
}
return true;
}
return false;
}
/* If no network filter found, return open filter.
* If no more open filters return NULL
*/
struct bcmasp_net_filter *bcmasp_netfilt_get_init(struct bcmasp_intf *intf,
u32 loc, bool wake_filter,
bool init)
{
struct bcmasp_net_filter *nfilter = NULL;
struct bcmasp_priv *priv = intf->parent;
int i, open_index = -1;
/* Check whether we exceed the filter table capacity */
if (loc != RX_CLS_LOC_ANY && loc >= NUM_NET_FILTERS)
return ERR_PTR(-EINVAL);
/* If the filter location is busy (already claimed) and we are initializing
* the filter (insertion), return a busy error code.
*/
if (loc != RX_CLS_LOC_ANY && init && priv->net_filters[loc].claimed)
return ERR_PTR(-EBUSY);
/* We need two filters for wake-up, so we cannot use an odd filter */
if (wake_filter && loc != RX_CLS_LOC_ANY && (loc % 2))
return ERR_PTR(-EINVAL);
/* Initialize the loop index based on the desired location or from 0 */
i = loc == RX_CLS_LOC_ANY ? 0 : loc;
for ( ; i < NUM_NET_FILTERS; i++) {
/* Found matching network filter */
if (!init &&
priv->net_filters[i].claimed &&
priv->net_filters[i].hw_index == i &&
priv->net_filters[i].port == intf->port)
return &priv->net_filters[i];
/* If we don't need a new filter or new filter already found */
if (!init || open_index >= 0)
continue;
/* Wake filter conslidates two filters to cover more bytes
* Wake filter is open if...
* 1. It is an even filter
* 2. The current and next filter is not claimed
*/
if (wake_filter && !(i % 2) && !priv->net_filters[i].claimed &&
!priv->net_filters[i + 1].claimed)
open_index = i;
else if (!priv->net_filters[i].claimed)
open_index = i;
}
if (open_index >= 0) {
nfilter = &priv->net_filters[open_index];
nfilter->claimed = true;
nfilter->port = intf->port;
nfilter->hw_index = open_index;
}
if (wake_filter && open_index >= 0) {
/* Claim next filter */
priv->net_filters[open_index + 1].claimed = true;
priv->net_filters[open_index + 1].wake_filter = true;
nfilter->wake_filter = true;
}
return nfilter ? nfilter : ERR_PTR(-EINVAL);
}
void bcmasp_netfilt_release(struct bcmasp_intf *intf,
struct bcmasp_net_filter *nfilt)
{
struct bcmasp_priv *priv = intf->parent;
if (nfilt->wake_filter) {
memset(&priv->net_filters[nfilt->hw_index + 1], 0,
sizeof(struct bcmasp_net_filter));
}
memset(nfilt, 0, sizeof(struct bcmasp_net_filter));
}
static void bcmasp_addr_to_uint(unsigned char *addr, u32 *high, u32 *low)
{
*high = (u32)(addr[0] << 8 | addr[1]);
*low = (u32)(addr[2] << 24 | addr[3] << 16 | addr[4] << 8 |
addr[5]);
}
static void bcmasp_set_mda_filter(struct bcmasp_intf *intf,
const unsigned char *addr,
unsigned char *mask,
unsigned int i)
{
struct bcmasp_priv *priv = intf->parent;
u32 addr_h, addr_l, mask_h, mask_l;
/* Set local copy */
ether_addr_copy(priv->mda_filters[i].mask, mask);
ether_addr_copy(priv->mda_filters[i].addr, addr);
/* Write to HW */
bcmasp_addr_to_uint(priv->mda_filters[i].mask, &mask_h, &mask_l);
bcmasp_addr_to_uint(priv->mda_filters[i].addr, &addr_h, &addr_l);
rx_filter_core_wl(priv, addr_h, ASP_RX_FILTER_MDA_PAT_H(i));
rx_filter_core_wl(priv, addr_l, ASP_RX_FILTER_MDA_PAT_L(i));
rx_filter_core_wl(priv, mask_h, ASP_RX_FILTER_MDA_MSK_H(i));
rx_filter_core_wl(priv, mask_l, ASP_RX_FILTER_MDA_MSK_L(i));
}
static void bcmasp_en_mda_filter(struct bcmasp_intf *intf, bool en,
unsigned int i)
{
struct bcmasp_priv *priv = intf->parent;
if (priv->mda_filters[i].en == en)
return;
priv->mda_filters[i].en = en;
priv->mda_filters[i].port = intf->port;
rx_filter_core_wl(priv, ((intf->channel + 8) |
(en << ASP_RX_FILTER_MDA_CFG_EN_SHIFT) |
ASP_RX_FILTER_MDA_CFG_UMC_SEL(intf->port)),
ASP_RX_FILTER_MDA_CFG(i));
}
/* There are 32 MDA filters shared between all ports, we reserve 4 filters per
* port for the following.
* - Promisc: Filter to allow all packets when promisc is enabled
* - All Multicast
* - Broadcast
* - Own address
*
* The reserved filters are identified as so.
* - Promisc: (index * 4) + 0
* - All Multicast: (index * 4) + 1
* - Broadcast: (index * 4) + 2
* - Own address: (index * 4) + 3
*/
enum asp_rx_filter_id {
ASP_RX_FILTER_MDA_PROMISC = 0,
ASP_RX_FILTER_MDA_ALLMULTI,
ASP_RX_FILTER_MDA_BROADCAST,
ASP_RX_FILTER_MDA_OWN_ADDR,
ASP_RX_FILTER_MDA_RES_MAX,
};
#define ASP_RX_FILT_MDA(intf, name) (((intf)->index * \
ASP_RX_FILTER_MDA_RES_MAX) \
+ ASP_RX_FILTER_MDA_##name)
static int bcmasp_total_res_mda_cnt(struct bcmasp_priv *priv)
{
return list_count_nodes(&priv->intfs) * ASP_RX_FILTER_MDA_RES_MAX;
}
void bcmasp_set_promisc(struct bcmasp_intf *intf, bool en)
{
unsigned int i = ASP_RX_FILT_MDA(intf, PROMISC);
unsigned char promisc[ETH_ALEN];
eth_zero_addr(promisc);
/* Set mask to 00:00:00:00:00:00 to match all packets */
bcmasp_set_mda_filter(intf, promisc, promisc, i);
bcmasp_en_mda_filter(intf, en, i);
}
void bcmasp_set_allmulti(struct bcmasp_intf *intf, bool en)
{
unsigned char allmulti[] = {0x01, 0x00, 0x00, 0x00, 0x00, 0x00};
unsigned int i = ASP_RX_FILT_MDA(intf, ALLMULTI);
/* Set mask to 01:00:00:00:00:00 to match all multicast */
bcmasp_set_mda_filter(intf, allmulti, allmulti, i);
bcmasp_en_mda_filter(intf, en, i);
}
void bcmasp_set_broad(struct bcmasp_intf *intf, bool en)
{
unsigned int i = ASP_RX_FILT_MDA(intf, BROADCAST);
unsigned char addr[ETH_ALEN];
eth_broadcast_addr(addr);
bcmasp_set_mda_filter(intf, addr, addr, i);
bcmasp_en_mda_filter(intf, en, i);
}
void bcmasp_set_oaddr(struct bcmasp_intf *intf, const unsigned char *addr,
bool en)
{
unsigned char mask[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
unsigned int i = ASP_RX_FILT_MDA(intf, OWN_ADDR);
bcmasp_set_mda_filter(intf, addr, mask, i);
bcmasp_en_mda_filter(intf, en, i);
}
void bcmasp_disable_all_filters(struct bcmasp_intf *intf)
{
struct bcmasp_priv *priv = intf->parent;
unsigned int i;
int res_count;
res_count = bcmasp_total_res_mda_cnt(intf->parent);
/* Disable all filters held by this port */
for (i = res_count; i < NUM_MDA_FILTERS; i++) {
if (priv->mda_filters[i].en &&
priv->mda_filters[i].port == intf->port)
bcmasp_en_mda_filter(intf, 0, i);
}
}
static int bcmasp_combine_set_filter(struct bcmasp_intf *intf,
unsigned char *addr, unsigned char *mask,
int i)
{
struct bcmasp_priv *priv = intf->parent;
u64 addr1, addr2, mask1, mask2, mask3;
/* Switch to u64 to help with the calculations */
addr1 = ether_addr_to_u64(priv->mda_filters[i].addr);
mask1 = ether_addr_to_u64(priv->mda_filters[i].mask);
addr2 = ether_addr_to_u64(addr);
mask2 = ether_addr_to_u64(mask);
/* Check if one filter resides within the other */
mask3 = mask1 & mask2;
if (mask3 == mask1 && ((addr1 & mask1) == (addr2 & mask1))) {
/* Filter 2 resides within filter 1, so everything is good */
return 0;
} else if (mask3 == mask2 && ((addr1 & mask2) == (addr2 & mask2))) {
/* Filter 1 resides within filter 2, so swap filters */
bcmasp_set_mda_filter(intf, addr, mask, i);
return 0;
}
/* Unable to combine */
return -EINVAL;
}
int bcmasp_set_en_mda_filter(struct bcmasp_intf *intf, unsigned char *addr,
unsigned char *mask)
{
struct bcmasp_priv *priv = intf->parent;
int ret, res_count;
unsigned int i;
res_count = bcmasp_total_res_mda_cnt(intf->parent);
for (i = res_count; i < NUM_MDA_FILTERS; i++) {
/* If filter not enabled or belongs to another port skip */
if (!priv->mda_filters[i].en ||
priv->mda_filters[i].port != intf->port)
continue;
/* Attempt to combine filters */
ret = bcmasp_combine_set_filter(intf, addr, mask, i);
if (!ret) {
intf->mib.filters_combine_cnt++;
return 0;
}
}
/* Create new filter if possible */
for (i = res_count; i < NUM_MDA_FILTERS; i++) {
if (priv->mda_filters[i].en)
continue;
bcmasp_set_mda_filter(intf, addr, mask, i);
bcmasp_en_mda_filter(intf, 1, i);
return 0;
}
/* No room for new filter */
return -EINVAL;
}
static void bcmasp_core_init_filters(struct bcmasp_priv *priv)
{
unsigned int i;
/* Disable all filters and reset software view since the HW
* can lose context while in deep sleep suspend states
*/
for (i = 0; i < NUM_MDA_FILTERS; i++) {
rx_filter_core_wl(priv, 0x0, ASP_RX_FILTER_MDA_CFG(i));
priv->mda_filters[i].en = 0;
}
for (i = 0; i < NUM_NET_FILTERS; i++)
rx_filter_core_wl(priv, 0x0, ASP_RX_FILTER_NET_CFG(i));
/* Top level filter enable bit should be enabled at all times, set
* GEN_WAKE_CLEAR to clear the network filter wake-up which would
* otherwise be sticky
*/
rx_filter_core_wl(priv, (ASP_RX_FILTER_OPUT_EN |
ASP_RX_FILTER_MDA_EN |
ASP_RX_FILTER_GEN_WK_CLR |
ASP_RX_FILTER_NT_FLT_EN),
ASP_RX_FILTER_BLK_CTRL);
}
/* ASP core initialization */
static void bcmasp_core_init(struct bcmasp_priv *priv)
{
tx_analytics_core_wl(priv, 0x0, ASP_TX_ANALYTICS_CTRL);
rx_analytics_core_wl(priv, 0x4, ASP_RX_ANALYTICS_CTRL);
rx_edpkt_core_wl(priv, (ASP_EDPKT_HDR_SZ_128 << ASP_EDPKT_HDR_SZ_SHIFT),
ASP_EDPKT_HDR_CFG);
rx_edpkt_core_wl(priv,
(ASP_EDPKT_ENDI_BT_SWP_WD << ASP_EDPKT_ENDI_DESC_SHIFT),
ASP_EDPKT_ENDI);
rx_edpkt_core_wl(priv, 0x1b, ASP_EDPKT_BURST_BUF_PSCAL_TOUT);
rx_edpkt_core_wl(priv, 0x3e8, ASP_EDPKT_BURST_BUF_WRITE_TOUT);
rx_edpkt_core_wl(priv, 0x3e8, ASP_EDPKT_BURST_BUF_READ_TOUT);
rx_edpkt_core_wl(priv, ASP_EDPKT_ENABLE_EN, ASP_EDPKT_ENABLE);
/* Disable and clear both UniMAC's wake-up interrupts to avoid
* sticky interrupts.
*/
_intr2_mask_set(priv, ASP_INTR2_UMC0_WAKE | ASP_INTR2_UMC1_WAKE);
intr2_core_wl(priv, ASP_INTR2_UMC0_WAKE | ASP_INTR2_UMC1_WAKE,
ASP_INTR2_CLEAR);
}
static void bcmasp_core_clock_select(struct bcmasp_priv *priv, bool slow)
{
u32 reg;
reg = ctrl_core_rl(priv, ASP_CTRL_CORE_CLOCK_SELECT);
if (slow)
reg &= ~ASP_CTRL_CORE_CLOCK_SELECT_MAIN;
else
reg |= ASP_CTRL_CORE_CLOCK_SELECT_MAIN;
ctrl_core_wl(priv, reg, ASP_CTRL_CORE_CLOCK_SELECT);
}
static void bcmasp_core_clock_set_ll(struct bcmasp_priv *priv, u32 clr, u32 set)
{
u32 reg;
reg = ctrl_core_rl(priv, ASP_CTRL_CLOCK_CTRL);
reg &= ~clr;
reg |= set;
ctrl_core_wl(priv, reg, ASP_CTRL_CLOCK_CTRL);
reg = ctrl_core_rl(priv, ASP_CTRL_SCRATCH_0);
reg &= ~clr;
reg |= set;
ctrl_core_wl(priv, reg, ASP_CTRL_SCRATCH_0);
}
static void bcmasp_core_clock_set(struct bcmasp_priv *priv, u32 clr, u32 set)
{
unsigned long flags;
spin_lock_irqsave(&priv->clk_lock, flags);
bcmasp_core_clock_set_ll(priv, clr, set);
spin_unlock_irqrestore(&priv->clk_lock, flags);
}
void bcmasp_core_clock_set_intf(struct bcmasp_intf *intf, bool en)
{
u32 intf_mask = ASP_CTRL_CLOCK_CTRL_ASP_RGMII_DIS(intf->port);
struct bcmasp_priv *priv = intf->parent;
unsigned long flags;
u32 reg;
/* When enabling an interface, if the RX or TX clocks were not enabled,
* enable them. Conversely, while disabling an interface, if this is
* the last one enabled, we can turn off the shared RX and TX clocks as
* well. We control enable bits which is why we test for equality on
* the RGMII clock bit mask.
*/
spin_lock_irqsave(&priv->clk_lock, flags);
if (en) {
intf_mask |= ASP_CTRL_CLOCK_CTRL_ASP_TX_DISABLE |
ASP_CTRL_CLOCK_CTRL_ASP_RX_DISABLE;
bcmasp_core_clock_set_ll(priv, intf_mask, 0);
} else {
reg = ctrl_core_rl(priv, ASP_CTRL_SCRATCH_0) | intf_mask;
if ((reg & ASP_CTRL_CLOCK_CTRL_ASP_RGMII_MASK) ==
ASP_CTRL_CLOCK_CTRL_ASP_RGMII_MASK)
intf_mask |= ASP_CTRL_CLOCK_CTRL_ASP_TX_DISABLE |
ASP_CTRL_CLOCK_CTRL_ASP_RX_DISABLE;
bcmasp_core_clock_set_ll(priv, 0, intf_mask);
}
spin_unlock_irqrestore(&priv->clk_lock, flags);
}
static irqreturn_t bcmasp_isr_wol(int irq, void *data)
{
struct bcmasp_priv *priv = data;
u32 status;
/* No L3 IRQ, so we good */
if (priv->wol_irq <= 0)
goto irq_handled;
status = wakeup_intr2_core_rl(priv, ASP_WAKEUP_INTR2_STATUS) &
~wakeup_intr2_core_rl(priv, ASP_WAKEUP_INTR2_MASK_STATUS);
wakeup_intr2_core_wl(priv, status, ASP_WAKEUP_INTR2_CLEAR);
irq_handled:
pm_wakeup_event(&priv->pdev->dev, 0);
return IRQ_HANDLED;
}
static int bcmasp_get_and_request_irq(struct bcmasp_priv *priv, int i)
{
struct platform_device *pdev = priv->pdev;
int irq, ret;
irq = platform_get_irq_optional(pdev, i);
if (irq < 0)
return irq;
ret = devm_request_irq(&pdev->dev, irq, bcmasp_isr_wol, 0,
pdev->name, priv);
if (ret)
return ret;
return irq;
}
static void bcmasp_init_wol_shared(struct bcmasp_priv *priv)
{
struct platform_device *pdev = priv->pdev;
struct device *dev = &pdev->dev;
int irq;
irq = bcmasp_get_and_request_irq(priv, 1);
if (irq < 0) {
dev_warn(dev, "Failed to init WoL irq: %d\n", irq);
return;
}
priv->wol_irq = irq;
priv->wol_irq_enabled_mask = 0;
device_set_wakeup_capable(&pdev->dev, 1);
}
static void bcmasp_enable_wol_shared(struct bcmasp_intf *intf, bool en)
{
struct bcmasp_priv *priv = intf->parent;
struct device *dev = &priv->pdev->dev;
if (en) {
if (priv->wol_irq_enabled_mask) {
set_bit(intf->port, &priv->wol_irq_enabled_mask);
return;
}
/* First enable */
set_bit(intf->port, &priv->wol_irq_enabled_mask);
enable_irq_wake(priv->wol_irq);
device_set_wakeup_enable(dev, 1);
} else {
if (!priv->wol_irq_enabled_mask)
return;
clear_bit(intf->port, &priv->wol_irq_enabled_mask);
if (priv->wol_irq_enabled_mask)
return;
/* Last disable */
disable_irq_wake(priv->wol_irq);
device_set_wakeup_enable(dev, 0);
}
}
static void bcmasp_wol_irq_destroy_shared(struct bcmasp_priv *priv)
{
if (priv->wol_irq > 0)
free_irq(priv->wol_irq, priv);
}
static void bcmasp_init_wol_per_intf(struct bcmasp_priv *priv)
{
struct platform_device *pdev = priv->pdev;
struct device *dev = &pdev->dev;
struct bcmasp_intf *intf;
int irq;
list_for_each_entry(intf, &priv->intfs, list) {
irq = bcmasp_get_and_request_irq(priv, intf->port + 1);
if (irq < 0) {
dev_warn(dev, "Failed to init WoL irq(port %d): %d\n",
intf->port, irq);
continue;
}
intf->wol_irq = irq;
intf->wol_irq_enabled = false;
device_set_wakeup_capable(&pdev->dev, 1);
}
}
static void bcmasp_enable_wol_per_intf(struct bcmasp_intf *intf, bool en)
{
struct device *dev = &intf->parent->pdev->dev;
if (en ^ intf->wol_irq_enabled)
irq_set_irq_wake(intf->wol_irq, en);
intf->wol_irq_enabled = en;
device_set_wakeup_enable(dev, en);
}
static void bcmasp_wol_irq_destroy_per_intf(struct bcmasp_priv *priv)
{
struct bcmasp_intf *intf;
list_for_each_entry(intf, &priv->intfs, list) {
if (intf->wol_irq > 0)
free_irq(intf->wol_irq, priv);
}
}
static struct bcmasp_hw_info v20_hw_info = {
.rx_ctrl_flush = ASP_RX_CTRL_FLUSH,
.umac2fb = UMAC2FB_OFFSET,
.rx_ctrl_fb_out_frame_count = ASP_RX_CTRL_FB_OUT_FRAME_COUNT,
.rx_ctrl_fb_filt_out_frame_count = ASP_RX_CTRL_FB_FILT_OUT_FRAME_COUNT,
.rx_ctrl_fb_rx_fifo_depth = ASP_RX_CTRL_FB_RX_FIFO_DEPTH,
};
static const struct bcmasp_plat_data v20_plat_data = {
.init_wol = bcmasp_init_wol_per_intf,
.enable_wol = bcmasp_enable_wol_per_intf,
.destroy_wol = bcmasp_wol_irq_destroy_per_intf,
.hw_info = &v20_hw_info,
};
static struct bcmasp_hw_info v21_hw_info = {
.rx_ctrl_flush = ASP_RX_CTRL_FLUSH_2_1,
.umac2fb = UMAC2FB_OFFSET_2_1,
.rx_ctrl_fb_out_frame_count = ASP_RX_CTRL_FB_OUT_FRAME_COUNT_2_1,
.rx_ctrl_fb_filt_out_frame_count =
ASP_RX_CTRL_FB_FILT_OUT_FRAME_COUNT_2_1,
.rx_ctrl_fb_rx_fifo_depth = ASP_RX_CTRL_FB_RX_FIFO_DEPTH_2_1,
};
static const struct bcmasp_plat_data v21_plat_data = {
.init_wol = bcmasp_init_wol_shared,
.enable_wol = bcmasp_enable_wol_shared,
.destroy_wol = bcmasp_wol_irq_destroy_shared,
.hw_info = &v21_hw_info,
};
static const struct of_device_id bcmasp_of_match[] = {
{ .compatible = "brcm,asp-v2.0", .data = &v20_plat_data },
{ .compatible = "brcm,asp-v2.1", .data = &v21_plat_data },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, bcmasp_of_match);
static const struct of_device_id bcmasp_mdio_of_match[] = {
{ .compatible = "brcm,asp-v2.1-mdio", },
{ .compatible = "brcm,asp-v2.0-mdio", },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, bcmasp_mdio_of_match);
static void bcmasp_remove_intfs(struct bcmasp_priv *priv)
{
struct bcmasp_intf *intf, *n;
list_for_each_entry_safe(intf, n, &priv->intfs, list) {
list_del(&intf->list);
bcmasp_interface_destroy(intf);
}
}
static int bcmasp_probe(struct platform_device *pdev)
{
struct device_node *ports_node, *intf_node;
const struct bcmasp_plat_data *pdata;
struct device *dev = &pdev->dev;
struct bcmasp_priv *priv;
struct bcmasp_intf *intf;
int ret = 0, count = 0;
unsigned int i;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->irq = platform_get_irq(pdev, 0);
if (priv->irq <= 0)
return -EINVAL;
priv->clk = devm_clk_get_optional_enabled(dev, "sw_asp");
if (IS_ERR(priv->clk))
return dev_err_probe(dev, PTR_ERR(priv->clk),
"failed to request clock\n");
/* Base from parent node */
priv->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(priv->base))
return dev_err_probe(dev, PTR_ERR(priv->base), "failed to iomap\n");
ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(40));
if (ret)
return dev_err_probe(dev, ret, "unable to set DMA mask: %d\n", ret);
dev_set_drvdata(&pdev->dev, priv);
priv->pdev = pdev;
spin_lock_init(&priv->mda_lock);
spin_lock_init(&priv->clk_lock);
mutex_init(&priv->wol_lock);
mutex_init(&priv->net_lock);
INIT_LIST_HEAD(&priv->intfs);
pdata = device_get_match_data(&pdev->dev);
if (!pdata)
return dev_err_probe(dev, -EINVAL, "unable to find platform data\n");
priv->init_wol = pdata->init_wol;
priv->enable_wol = pdata->enable_wol;
priv->destroy_wol = pdata->destroy_wol;
priv->hw_info = pdata->hw_info;
/* Enable all clocks to ensure successful probing */
bcmasp_core_clock_set(priv, ASP_CTRL_CLOCK_CTRL_ASP_ALL_DISABLE, 0);
/* Switch to the main clock */
bcmasp_core_clock_select(priv, false);
bcmasp_intr2_mask_set_all(priv);
bcmasp_intr2_clear_all(priv);
ret = devm_request_irq(&pdev->dev, priv->irq, bcmasp_isr, 0,
pdev->name, priv);
if (ret)
return dev_err_probe(dev, ret, "failed to request ASP interrupt: %d", ret);
/* Register mdio child nodes */
of_platform_populate(dev->of_node, bcmasp_mdio_of_match, NULL, dev);
/* ASP specific initialization, Needs to be done regardless of
* how many interfaces come up.
*/
bcmasp_core_init(priv);
bcmasp_core_init_filters(priv);
ports_node = of_find_node_by_name(dev->of_node, "ethernet-ports");
if (!ports_node) {
dev_warn(dev, "No ports found\n");
return -EINVAL;
}
i = 0;
for_each_available_child_of_node(ports_node, intf_node) {
intf = bcmasp_interface_create(priv, intf_node, i);
if (!intf) {
dev_err(dev, "Cannot create eth interface %d\n", i);
bcmasp_remove_intfs(priv);
of_node_put(intf_node);
goto of_put_exit;
}
list_add_tail(&intf->list, &priv->intfs);
i++;
}
/* Check and enable WoL */
priv->init_wol(priv);
/* Drop the clock reference count now and let ndo_open()/ndo_close()
* manage it for us from now on.
*/
bcmasp_core_clock_set(priv, 0, ASP_CTRL_CLOCK_CTRL_ASP_ALL_DISABLE);
clk_disable_unprepare(priv->clk);
/* Now do the registration of the network ports which will take care
* of managing the clock properly.
*/
list_for_each_entry(intf, &priv->intfs, list) {
ret = register_netdev(intf->ndev);
if (ret) {
netdev_err(intf->ndev,
"failed to register net_device: %d\n", ret);
priv->destroy_wol(priv);
bcmasp_remove_intfs(priv);
goto of_put_exit;
}
count++;
}
dev_info(dev, "Initialized %d port(s)\n", count);
of_put_exit:
of_node_put(ports_node);
return ret;
}
static void bcmasp_remove(struct platform_device *pdev)
{
struct bcmasp_priv *priv = dev_get_drvdata(&pdev->dev);
if (!priv)
return;
priv->destroy_wol(priv);
bcmasp_remove_intfs(priv);
}
static void bcmasp_shutdown(struct platform_device *pdev)
{
bcmasp_remove(pdev);
}
static int __maybe_unused bcmasp_suspend(struct device *d)
{
struct bcmasp_priv *priv = dev_get_drvdata(d);
struct bcmasp_intf *intf;
int ret;
list_for_each_entry(intf, &priv->intfs, list) {
ret = bcmasp_interface_suspend(intf);
if (ret)
break;
}
ret = clk_prepare_enable(priv->clk);
if (ret)
return ret;
/* Whether Wake-on-LAN is enabled or not, we can always disable
* the shared TX clock
*/
bcmasp_core_clock_set(priv, 0, ASP_CTRL_CLOCK_CTRL_ASP_TX_DISABLE);
bcmasp_core_clock_select(priv, true);
clk_disable_unprepare(priv->clk);
return ret;
}
static int __maybe_unused bcmasp_resume(struct device *d)
{
struct bcmasp_priv *priv = dev_get_drvdata(d);
struct bcmasp_intf *intf;
int ret;
ret = clk_prepare_enable(priv->clk);
if (ret)
return ret;
/* Switch to the main clock domain */
bcmasp_core_clock_select(priv, false);
/* Re-enable all clocks for re-initialization */
bcmasp_core_clock_set(priv, ASP_CTRL_CLOCK_CTRL_ASP_ALL_DISABLE, 0);
bcmasp_core_init(priv);
bcmasp_core_init_filters(priv);
/* And disable them to let the network devices take care of them */
bcmasp_core_clock_set(priv, 0, ASP_CTRL_CLOCK_CTRL_ASP_ALL_DISABLE);
clk_disable_unprepare(priv->clk);
list_for_each_entry(intf, &priv->intfs, list) {
ret = bcmasp_interface_resume(intf);
if (ret)
break;
}
return ret;
}
static SIMPLE_DEV_PM_OPS(bcmasp_pm_ops,
bcmasp_suspend, bcmasp_resume);
static struct platform_driver bcmasp_driver = {
.probe = bcmasp_probe,
.remove_new = bcmasp_remove,
.shutdown = bcmasp_shutdown,
.driver = {
.name = "brcm,asp-v2",
.of_match_table = bcmasp_of_match,
.pm = &bcmasp_pm_ops,
},
};
module_platform_driver(bcmasp_driver);
MODULE_DESCRIPTION("Broadcom ASP 2.0 Ethernet controller driver");
MODULE_ALIAS("platform:brcm,asp-v2");
MODULE_LICENSE("GPL");
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