[PATCH 2/2] [net-next]: net: ti: icssg-prueth: split out common parts into library module

From: Arnd Bergmann
Date: Wed Apr 17 2024 - 04:45:11 EST

From: Arnd Bergmann <arnd@xxxxxxxx>

Linking object codes multiple times causes subtle bugs and a build-time
warning:

drivers/net/ethernet/ti/Makefile: icssg/icssg_common.o is added to multiple modules: icssg-prueth icssg-prueth-sr1
drivers/net/ethernet/ti/Makefile: icssg/icssg_classifier.o is added to multiple modules: icssg-prueth icssg-prueth-sr1
drivers/net/ethernet/ti/Makefile: icssg/icssg_config.o is added to multiple modules: icssg-prueth icssg-prueth-sr1
drivers/net/ethernet/ti/Makefile: icssg/icssg_mii_cfg.o is added to multiple modules: icssg-prueth icssg-prueth-sr1
drivers/net/ethernet/ti/Makefile: icssg/icssg_stats.o is added to multiple modules: icssg-prueth icssg-prueth-sr1
drivers/net/ethernet/ti/Makefile: icssg/icssg_ethtool.o is added to multiple modules: icssg-prueth icssg-prueth-sr1

Change the Makefile to link the common objects into a library
module that both versions of the driver then depend on. If one
of the two is built-in, the common parts will also be built-in
but still reachable through the exported symbols.

Fixes: e654b85a693e ("net: ti: icssg-prueth: Add ICSSG Ethernet driver for AM65x SR1.0 platforms")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
drivers/net/ethernet/ti/icssg/Makefile | 19 +++++++++++
.../net/ethernet/ti/icssg/icssg_classifier.c | 6 ++++
drivers/net/ethernet/ti/icssg/icssg_common.c | 32 +++++++++++++++++++
drivers/net/ethernet/ti/icssg/icssg_config.c | 5 +++
drivers/net/ethernet/ti/icssg/icssg_ethtool.c | 1 +
drivers/net/ethernet/ti/icssg/icssg_mii_cfg.c | 4 +++
drivers/net/ethernet/ti/icssg/icssg_queues.c | 2 ++
drivers/net/ethernet/ti/icssg/icssg_stats.c | 1 +
8 files changed, 70 insertions(+)
create mode 100644 drivers/net/ethernet/ti/icssg/Makefile

diff --git a/drivers/net/ethernet/ti/icssg/Makefile b/drivers/net/ethernet/ti/icssg/Makefile
new file mode 100644
index 000000000000..4382eaeb9a2e
--- /dev/null
+++ b/drivers/net/ethernet/ti/icssg/Makefile
@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the TI network device drivers.
+#
+
+obj-$(CONFIG_TI_ICSSG_PRUETH) += ti-icssg-prueth.o ti-icssg.o
+obj-$(CONFIG_TI_ICSSG_PRUETH_SR1) += ti-icssg-prueth-sr1.o ti-icssg.o
+obj-$(CONFIG_TI_ICSS_IEP) += icss_iep.o
+
+ti-icssg-prueth-y := icssg_prueth.o
+ti-icssg-prueth-sr1-y := icssg_prueth_sr1.o
+
+ti-icssg-y := icssg_common.o \
+ icssg_classifier.o \
+ icssg_queues.o \
+ icssg_config.o \
+ icssg_mii_cfg.o \
+ icssg_stats.o \
+ icssg_ethtool.o
diff --git a/drivers/net/ethernet/ti/icssg/icssg_classifier.c b/drivers/net/ethernet/ti/icssg/icssg_classifier.c
index 79ba47bb3602..72170971a063 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_classifier.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_classifier.c
@@ -297,6 +297,7 @@ void icssg_class_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac)
mac[2] << 16 | mac[3] << 24));
regmap_write(miig_rt, offs[slice].mac1, (u32)(mac[4] | mac[5] << 8));
}
+EXPORT_SYMBOL_GPL(icssg_class_set_mac_addr);

static void icssg_class_ft1_add_mcast(struct regmap *miig_rt, int slice,
int slot, const u8 *addr, const u8 *mask)
@@ -360,6 +361,7 @@ void icssg_class_disable(struct regmap *miig_rt, int slice)
/* clear CFG2 */
regmap_write(miig_rt, offs[slice].rx_class_cfg2, 0);
}
+EXPORT_SYMBOL_GPL(icssg_class_disable);

void icssg_class_default(struct regmap *miig_rt, int slice, bool allmulti,
bool is_sr1)
@@ -390,6 +392,7 @@ void icssg_class_default(struct regmap *miig_rt, int slice, bool allmulti,
/* clear CFG2 */
regmap_write(miig_rt, offs[slice].rx_class_cfg2, 0);
}
+EXPORT_SYMBOL_GPL(icssg_class_default);

void icssg_class_promiscuous_sr1(struct regmap *miig_rt, int slice)
{
@@ -408,6 +411,7 @@ void icssg_class_promiscuous_sr1(struct regmap *miig_rt, int slice)
regmap_write(miig_rt, offset, data);
}
}
+EXPORT_SYMBOL_GPL(icssg_class_promiscuous_sr1);

void icssg_class_add_mcast_sr1(struct regmap *miig_rt, int slice,
struct net_device *ndev)
@@ -449,6 +453,7 @@ void icssg_class_add_mcast_sr1(struct regmap *miig_rt, int slice,
slot++;
}
}
+EXPORT_SYMBOL_GPL(icssg_class_add_mcast_sr1);

/* required for SAV check */
void icssg_ft1_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac_addr)
@@ -460,3 +465,4 @@ void icssg_ft1_set_mac_addr(struct regmap *miig_rt, int slice, u8 *mac_addr)
rx_class_ft1_set_da_mask(miig_rt, slice, 0, mask_addr);
rx_class_ft1_cfg_set_type(miig_rt, slice, 0, FT1_CFG_TYPE_EQ);
}
+EXPORT_SYMBOL_GPL(icssg_ft1_set_mac_addr);
diff --git a/drivers/net/ethernet/ti/icssg/icssg_common.c b/drivers/net/ethernet/ti/icssg/icssg_common.c
index 1d62c05b5f7c..1fb6f7e8a1b7 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_common.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_common.c
@@ -51,6 +51,7 @@ void prueth_cleanup_rx_chns(struct prueth_emac *emac,
if (rx_chn->rx_chn)
k3_udma_glue_release_rx_chn(rx_chn->rx_chn);
}
+EXPORT_SYMBOL_GPL(prueth_cleanup_rx_chns);

void prueth_cleanup_tx_chns(struct prueth_emac *emac)
{
@@ -71,6 +72,7 @@ void prueth_cleanup_tx_chns(struct prueth_emac *emac)
memset(tx_chn, 0, sizeof(*tx_chn));
}
}
+EXPORT_SYMBOL_GPL(prueth_cleanup_tx_chns);

void prueth_ndev_del_tx_napi(struct prueth_emac *emac, int num)
{
@@ -84,6 +86,7 @@ void prueth_ndev_del_tx_napi(struct prueth_emac *emac, int num)
netif_napi_del(&tx_chn->napi_tx);
}
}
+EXPORT_SYMBOL_GPL(prueth_ndev_del_tx_napi);

void prueth_xmit_free(struct prueth_tx_chn *tx_chn,
struct cppi5_host_desc_t *desc)
@@ -120,6 +123,7 @@ void prueth_xmit_free(struct prueth_tx_chn *tx_chn,

k3_cppi_desc_pool_free(tx_chn->desc_pool, first_desc);
}
+EXPORT_SYMBOL_GPL(prueth_xmit_free);

int emac_tx_complete_packets(struct prueth_emac *emac, int chn,
int budget)
@@ -242,6 +246,7 @@ int prueth_ndev_add_tx_napi(struct prueth_emac *emac)
prueth_ndev_del_tx_napi(emac, i);
return ret;
}
+EXPORT_SYMBOL_GPL(prueth_ndev_add_tx_napi);

int prueth_init_tx_chns(struct prueth_emac *emac)
{
@@ -322,6 +327,7 @@ int prueth_init_tx_chns(struct prueth_emac *emac)
prueth_cleanup_tx_chns(emac);
return ret;
}
+EXPORT_SYMBOL_GPL(prueth_init_tx_chns);

int prueth_init_rx_chns(struct prueth_emac *emac,
struct prueth_rx_chn *rx_chn,
@@ -431,6 +437,7 @@ int prueth_init_rx_chns(struct prueth_emac *emac,
prueth_cleanup_rx_chns(emac, rx_chn, max_rflows);
return ret;
}
+EXPORT_SYMBOL_GPL(prueth_init_rx_chns);

int prueth_dma_rx_push(struct prueth_emac *emac,
struct sk_buff *skb,
@@ -468,6 +475,7 @@ int prueth_dma_rx_push(struct prueth_emac *emac,
return k3_udma_glue_push_rx_chn(rx_chn->rx_chn, 0,
desc_rx, desc_dma);
}
+EXPORT_SYMBOL_GPL(prueth_dma_rx_push);

u64 icssg_ts_to_ns(u32 hi_sw, u32 hi, u32 lo, u32 cycle_time_ns)
{
@@ -483,6 +491,7 @@ u64 icssg_ts_to_ns(u32 hi_sw, u32 hi, u32 lo, u32 cycle_time_ns)

return ns;
}
+EXPORT_SYMBOL_GPL(icssg_ts_to_ns);

void emac_rx_timestamp(struct prueth_emac *emac,
struct sk_buff *skb, u32 *psdata)
@@ -782,6 +791,7 @@ enum netdev_tx emac_ndo_start_xmit(struct sk_buff *skb, struct net_device *ndev)
netif_tx_stop_queue(netif_txq);
return NETDEV_TX_BUSY;
}
+EXPORT_SYMBOL_GPL(emac_ndo_start_xmit);

static void prueth_tx_cleanup(void *data, dma_addr_t desc_dma)
{
@@ -807,6 +817,7 @@ irqreturn_t prueth_rx_irq(int irq, void *dev_id)

return IRQ_HANDLED;
}
+EXPORT_SYMBOL_GPL(prueth_rx_irq);

void prueth_emac_stop(struct prueth_emac *emac)
{
@@ -831,6 +842,7 @@ void prueth_emac_stop(struct prueth_emac *emac)
rproc_shutdown(prueth->rtu[slice]);
rproc_shutdown(prueth->pru[slice]);
}
+EXPORT_SYMBOL_GPL(prueth_emac_stop);

void prueth_cleanup_tx_ts(struct prueth_emac *emac)
{
@@ -843,6 +855,7 @@ void prueth_cleanup_tx_ts(struct prueth_emac *emac)
}
}
}
+EXPORT_SYMBOL_GPL(prueth_cleanup_tx_ts);

int emac_napi_rx_poll(struct napi_struct *napi_rx, int budget)
{
@@ -874,6 +887,7 @@ int emac_napi_rx_poll(struct napi_struct *napi_rx, int budget)

return num_rx;
}
+EXPORT_SYMBOL_GPL(emac_napi_rx_poll);

int prueth_prepare_rx_chan(struct prueth_emac *emac,
struct prueth_rx_chn *chn,
@@ -899,6 +913,7 @@ int prueth_prepare_rx_chan(struct prueth_emac *emac,

return 0;
}
+EXPORT_SYMBOL_GPL(prueth_prepare_rx_chan);

void prueth_reset_tx_chan(struct prueth_emac *emac, int ch_num,
bool free_skb)
@@ -913,6 +928,7 @@ void prueth_reset_tx_chan(struct prueth_emac *emac, int ch_num,
k3_udma_glue_disable_tx_chn(emac->tx_chns[i].tx_chn);
}
}
+EXPORT_SYMBOL_GPL(prueth_reset_tx_chan);

void prueth_reset_rx_chan(struct prueth_rx_chn *chn,
int num_flows, bool disable)
@@ -925,11 +941,13 @@ void prueth_reset_rx_chan(struct prueth_rx_chn *chn,
if (disable)
k3_udma_glue_disable_rx_chn(chn->rx_chn);
}
+EXPORT_SYMBOL_GPL(prueth_reset_rx_chan);

void emac_ndo_tx_timeout(struct net_device *ndev, unsigned int txqueue)
{
ndev->stats.tx_errors++;
}
+EXPORT_SYMBOL_GPL(emac_ndo_tx_timeout);

static int emac_set_ts_config(struct net_device *ndev, struct ifreq *ifr)
{
@@ -1006,6 +1024,7 @@ int emac_ndo_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd)

return phy_do_ioctl(ndev, ifr, cmd);
}
+EXPORT_SYMBOL_GPL(emac_ndo_ioctl);

void emac_ndo_get_stats64(struct net_device *ndev,
struct rtnl_link_stats64 *stats)
@@ -1027,6 +1046,7 @@ void emac_ndo_get_stats64(struct net_device *ndev,
stats->tx_errors = ndev->stats.tx_errors;
stats->tx_dropped = ndev->stats.tx_dropped;
}
+EXPORT_SYMBOL_GPL(emac_ndo_get_stats64);

int emac_ndo_get_phys_port_name(struct net_device *ndev, char *name,
size_t len)
@@ -1040,6 +1060,7 @@ int emac_ndo_get_phys_port_name(struct net_device *ndev, char *name,

return 0;
}
+EXPORT_SYMBOL_GPL(emac_ndo_get_phys_port_name);

/* get emac_port corresponding to eth_node name */
int prueth_node_port(struct device_node *eth_node)
@@ -1058,6 +1079,7 @@ int prueth_node_port(struct device_node *eth_node)
else
return PRUETH_PORT_INVALID;
}
+EXPORT_SYMBOL_GPL(prueth_node_port);

/* get MAC instance corresponding to eth_node name */
int prueth_node_mac(struct device_node *eth_node)
@@ -1076,6 +1098,7 @@ int prueth_node_mac(struct device_node *eth_node)
else
return PRUETH_MAC_INVALID;
}
+EXPORT_SYMBOL_GPL(prueth_node_mac);

void prueth_netdev_exit(struct prueth *prueth,
struct device_node *eth_node)
@@ -1101,6 +1124,7 @@ void prueth_netdev_exit(struct prueth *prueth,
free_netdev(emac->ndev);
prueth->emac[mac] = NULL;
}
+EXPORT_SYMBOL_GPL(prueth_netdev_exit);

int prueth_get_cores(struct prueth *prueth, int slice, bool is_sr1)
{
@@ -1151,6 +1175,7 @@ int prueth_get_cores(struct prueth *prueth, int slice, bool is_sr1)

return 0;
}
+EXPORT_SYMBOL_GPL(prueth_get_cores);

void prueth_put_cores(struct prueth *prueth, int slice)
{
@@ -1163,6 +1188,7 @@ void prueth_put_cores(struct prueth *prueth, int slice)
if (prueth->pru[slice])
pru_rproc_put(prueth->pru[slice]);
}
+EXPORT_SYMBOL_GPL(prueth_put_cores);

#ifdef CONFIG_PM_SLEEP
static int prueth_suspend(struct device *dev)
@@ -1219,3 +1245,9 @@ static int prueth_resume(struct device *dev)
const struct dev_pm_ops prueth_dev_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(prueth_suspend, prueth_resume)
};
+EXPORT_SYMBOL_GPL(prueth_dev_pm_ops);
+
+MODULE_AUTHOR("Roger Quadros <rogerq@xxxxxx>");
+MODULE_AUTHOR("Md Danish Anwar <danishanwar@xxxxxx>");
+MODULE_DESCRIPTION("PRUSS ICSSG Ethernet Driver library");
+MODULE_LICENSE("GPL");
diff --git a/drivers/net/ethernet/ti/icssg/icssg_config.c b/drivers/net/ethernet/ti/icssg/icssg_config.c
index 15f2235bf90f..5b284c94a02c 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_config.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_config.c
@@ -228,6 +228,7 @@ void icssg_config_ipg(struct prueth_emac *emac)

icssg_mii_update_ipg(prueth->mii_rt, slice, ipg);
}
+EXPORT_SYMBOL_GPL(icssg_config_ipg);

static void emac_r30_cmd_init(struct prueth_emac *emac)
{
@@ -384,6 +385,7 @@ int icssg_config(struct prueth *prueth, struct prueth_emac *emac, int slice)

return 0;
}
+EXPORT_SYMBOL_GPL(icssg_config);

/* Bitmask for ICSSG r30 commands */
static const struct icssg_r30_cmd emac_r32_bitmask[] = {
@@ -440,6 +442,7 @@ int emac_set_port_state(struct prueth_emac *emac,

return ret;
}
+EXPORT_SYMBOL_GPL(emac_set_port_state);

void icssg_config_half_duplex(struct prueth_emac *emac)
{
@@ -451,6 +454,7 @@ void icssg_config_half_duplex(struct prueth_emac *emac)
val = get_random_u32();
writel(val, emac->dram.va + HD_RAND_SEED_OFFSET);
}
+EXPORT_SYMBOL_GPL(icssg_config_half_duplex);

void icssg_config_set_speed(struct prueth_emac *emac)
{
@@ -477,3 +481,4 @@ void icssg_config_set_speed(struct prueth_emac *emac)

writeb(fw_speed, emac->dram.va + PORT_LINK_SPEED_OFFSET);
}
+EXPORT_SYMBOL_GPL(icssg_config_set_speed);
diff --git a/drivers/net/ethernet/ti/icssg/icssg_ethtool.c b/drivers/net/ethernet/ti/icssg/icssg_ethtool.c
index ca20325d4d3e..0659a7e2f494 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_ethtool.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_ethtool.c
@@ -219,3 +219,4 @@ const struct ethtool_ops icssg_ethtool_ops = {
.nway_reset = emac_nway_reset,
.get_rmon_stats = emac_get_rmon_stats,
};
+EXPORT_SYMBOL_GPL(icssg_ethtool_ops);
diff --git a/drivers/net/ethernet/ti/icssg/icssg_mii_cfg.c b/drivers/net/ethernet/ti/icssg/icssg_mii_cfg.c
index 92718ae40d7e..b64955438bb2 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_mii_cfg.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_mii_cfg.c
@@ -40,6 +40,7 @@ void icssg_mii_update_mtu(struct regmap *mii_rt, int mii, int mtu)
(mtu - 1) << PRUSS_MII_RT_RX_FRMS_MAX_FRM_SHIFT);
}
}
+EXPORT_SYMBOL_GPL(icssg_mii_update_mtu);

void icssg_update_rgmii_cfg(struct regmap *miig_rt, struct prueth_emac *emac)
{
@@ -66,6 +67,7 @@ void icssg_update_rgmii_cfg(struct regmap *miig_rt, struct prueth_emac *emac)
regmap_update_bits(miig_rt, RGMII_CFG_OFFSET, full_duplex_mask,
full_duplex_val);
}
+EXPORT_SYMBOL_GPL(icssg_update_rgmii_cfg);

void icssg_miig_set_interface_mode(struct regmap *miig_rt, int mii, phy_interface_t phy_if)
{
@@ -105,6 +107,7 @@ u32 icssg_rgmii_get_speed(struct regmap *miig_rt, int mii)

return icssg_rgmii_cfg_get_bitfield(miig_rt, mask, shift);
}
+EXPORT_SYMBOL_GPL(icssg_rgmii_get_speed);

u32 icssg_rgmii_get_fullduplex(struct regmap *miig_rt, int mii)
{
@@ -118,3 +121,4 @@ u32 icssg_rgmii_get_fullduplex(struct regmap *miig_rt, int mii)

return icssg_rgmii_cfg_get_bitfield(miig_rt, mask, shift);
}
+EXPORT_SYMBOL_GPL(icssg_rgmii_get_fullduplex);
diff --git a/drivers/net/ethernet/ti/icssg/icssg_queues.c b/drivers/net/ethernet/ti/icssg/icssg_queues.c
index 3c34f61ad40b..e5052d9e7807 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_queues.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_queues.c
@@ -28,6 +28,7 @@ int icssg_queue_pop(struct prueth *prueth, u8 queue)

return val;
}
+EXPORT_SYMBOL_GPL(icssg_queue_pop);

void icssg_queue_push(struct prueth *prueth, int queue, u16 addr)
{
@@ -36,6 +37,7 @@ void icssg_queue_push(struct prueth *prueth, int queue, u16 addr)

regmap_write(prueth->miig_rt, ICSSG_QUEUE_OFFSET + 4 * queue, addr);
}
+EXPORT_SYMBOL_GPL(icssg_queue_push);

u32 icssg_queue_level(struct prueth *prueth, int queue)
{
diff --git a/drivers/net/ethernet/ti/icssg/icssg_stats.c b/drivers/net/ethernet/ti/icssg/icssg_stats.c
index 3dbadddd7e35..fa071b4b27c5 100644
--- a/drivers/net/ethernet/ti/icssg/icssg_stats.c
+++ b/drivers/net/ethernet/ti/icssg/icssg_stats.c
@@ -51,6 +51,7 @@ void emac_stats_work_handler(struct work_struct *work)
queue_delayed_work(system_long_wq, &emac->stats_work,
msecs_to_jiffies((STATS_TIME_LIMIT_1G_MS * 1000) / emac->speed));
}
+EXPORT_SYMBOL_GPL(emac_stats_work_handler);

int emac_get_stat_by_name(struct prueth_emac *emac, char *stat_name)
{
--
2.39.2