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Commit ae65b03f authored by Jinesh K. Jayakumar's avatar Jinesh K. Jayakumar
Browse files

msm: ipa: Enable support for dynamic loading of clients 



Enable support in IPA ethernet offload sub-system to permit its
client drivers to be loaded dynamically.

Change-Id: I5db7164b57f3528c2d0c0ab1d150ba06c4c381e1
Signed-off-by: default avatarJinesh K. Jayakumar <jineshk@codeaurora.org>
parent 8d8dbb54

drivers/platform/msm/ipa/ipa_v3/ethernet/ipa_eth.c

+43 −14
Original line number Diff line number Diff line
@@ -27,6 +27,11 @@ enum ipa_eth_states { 
	IPA_ETH_ST_MAX,

};



enum ipa_eth_dev_states {

	IPA_ETH_DEV_ST_UNPAIRING,

	IPA_ETH_DEV_ST_MAX,

};



static unsigned long ipa_eth_state;



static struct dentry *ipa_eth_debugfs;
@@ -56,12 +61,15 @@ static inline bool ipa_eth_ready(void) 


static inline bool initable(struct ipa_eth_device *eth_dev)

{

	return eth_dev->init;

	return !test_bit(IPA_ETH_DEV_ST_UNPAIRING, &eth_dev->state) &&

		eth_dev->init;

}



static inline bool startable(struct ipa_eth_device *eth_dev)

{

	return eth_dev->init && eth_dev->start &&

	return !test_bit(IPA_ETH_DEV_ST_UNPAIRING, &eth_dev->state) &&

		eth_dev->init &&

		eth_dev->start &&

		test_bit(IPA_ETH_IF_ST_LOWER_UP, &eth_dev->if_state);

}
@@ -148,9 +156,13 @@ static int ipa_eth_deinit_device(struct ipa_eth_device *eth_dev) 
	return 0;

}



static void ipa_eth_free_msg(void *buff, u32 len, u32 type) {}



static int ipa_eth_start_device(struct ipa_eth_device *eth_dev)

{

	int rc;

	struct ipa_msg_meta msg_meta;

	struct ipa_ecm_msg ecm_msg;



	if (eth_dev->of_state == IPA_ETH_OF_ST_STARTED)

		return 0;
@@ -180,6 +192,16 @@ static int ipa_eth_start_device(struct ipa_eth_device *eth_dev) 
		return rc;

	}



	memset(&msg_meta, 0, sizeof(msg_meta));

	memset(&ecm_msg, 0, sizeof(ecm_msg));



	ecm_msg.ifindex = eth_dev->net_dev->ifindex;

	strlcpy(ecm_msg.name, eth_dev->net_dev->name, IPA_RESOURCE_NAME_MAX);



	msg_meta.msg_type = ECM_CONNECT;

	msg_meta.msg_len = sizeof(struct ipa_ecm_msg);

	(void) ipa_send_msg(&msg_meta, &ecm_msg, ipa_eth_free_msg);



	ipa_eth_dev_log(eth_dev, "Started device");



	eth_dev->of_state = IPA_ETH_OF_ST_STARTED;
@@ -190,6 +212,18 @@ static int ipa_eth_start_device(struct ipa_eth_device *eth_dev) 
static int ipa_eth_stop_device(struct ipa_eth_device *eth_dev)

{

	int rc;

	struct ipa_msg_meta msg_meta;

	struct ipa_ecm_msg ecm_msg;



	memset(&msg_meta, 0, sizeof(msg_meta));

	memset(&ecm_msg, 0, sizeof(ecm_msg));



	ecm_msg.ifindex = eth_dev->net_dev->ifindex;

	strlcpy(ecm_msg.name, eth_dev->net_dev->name, IPA_RESOURCE_NAME_MAX);



	msg_meta.msg_type = ECM_DISCONNECT;

	msg_meta.msg_len = sizeof(struct ipa_ecm_msg);

	(void) ipa_send_msg(&msg_meta, &ecm_msg, ipa_eth_free_msg);



	if (eth_dev->of_state == IPA_ETH_OF_ST_DEINITED)

		return 0;
@@ -342,7 +376,7 @@ static void ipa_eth_dev_start_timer_cb(unsigned long data) 
	ipa_eth_refresh_device(eth_dev);

}



static int ipa_eth_netdev_event_change(struct ipa_eth_device *eth_dev)

static int __ipa_eth_netdev_event(struct ipa_eth_device *eth_dev)

{

	bool refresh_needed = netif_carrier_ok(eth_dev->net_dev) ?

		!test_and_set_bit(IPA_ETH_IF_ST_LOWER_UP, &eth_dev->if_state) :
@@ -365,17 +399,9 @@ static int ipa_eth_netdev_event(struct notifier_block *nb, 
	if (net_dev != eth_dev->net_dev)

		return NOTIFY_DONE;



	ipa_eth_dev_log(eth_dev, "Received netdev event %lu", event);

	ipa_eth_dev_log(eth_dev, "Received netdev event 0x%04lx", event);



	switch (event) {

	case NETDEV_CHANGE:

		return ipa_eth_netdev_event_change(eth_dev);

	default:

		/* Ignore other events */

		break;

	}



	return NOTIFY_DONE;

	return __ipa_eth_netdev_event(eth_dev);

}



static int ipa_eth_uc_ready_cb(struct notifier_block *nb,
@@ -620,7 +646,7 @@ static void __ipa_eth_unpair_device(struct ipa_eth_device *eth_dev) 


	flush_work(&eth_dev->refresh);



	eth_dev->init = eth_dev->start = false;

	set_bit(IPA_ETH_DEV_ST_UNPAIRING, &eth_dev->state);



	ipa_eth_refresh_device(eth_dev);

	flush_work(&eth_dev->refresh);
@@ -628,6 +654,8 @@ static void __ipa_eth_unpair_device(struct ipa_eth_device *eth_dev) 


	unregister_netdevice_notifier(&eth_dev->netdevice_nb);

	ipa_eth_offload_unpair_device(eth_dev);



	clear_bit(IPA_ETH_DEV_ST_UNPAIRING, &eth_dev->state);

}



static void ipa_eth_pair_devices(void)
@@ -904,6 +932,7 @@ int ipa_eth_register_offload_driver(struct ipa_eth_offload_driver *od) 
	ipa_eth_log("Registered offload driver %s", od->name);



	ipa_eth_pair_devices();

	ipa_eth_refresh_devices();



	return 0;

}

drivers/platform/msm/ipa/ipa_v3/ethernet/ipa_eth_gsi.c

+8 −0
Original line number Diff line number Diff line
@@ -242,6 +242,14 @@ int ipa_eth_gsi_dealloc(struct ipa_eth_channel *ch) 
	}



	if (ep_ctx->gsi_evt_ring_hdl != ~0) {

		gsi_rc = gsi_reset_evt_ring(ep_ctx->gsi_evt_ring_hdl);

		if (gsi_rc != GSI_STATUS_SUCCESS) {

			ipa_eth_dev_err(ch->eth_dev,

				"Failed to reset event ring %lu",

				ep_ctx->gsi_evt_ring_hdl);

			return gsi_rc;

		}



		gsi_rc = gsi_dealloc_evt_ring(ep_ctx->gsi_evt_ring_hdl);

		if (gsi_rc != GSI_STATUS_SUCCESS) {

			ipa_eth_dev_err(ch->eth_dev,

drivers/platform/msm/ipa/ipa_v3/ethernet/ipa_eth_offload.c

+2 −0
Original line number Diff line number Diff line
@@ -207,6 +207,8 @@ int ipa_eth_offload_register_driver(struct ipa_eth_offload_driver *od) 


void ipa_eth_offload_unregister_driver(struct ipa_eth_offload_driver *od)

{

	debugfs_remove_recursive(od->debugfs);



	mutex_lock(&ipa_eth_offload_drivers_lock);

	list_del(&od->driver_list);

	mutex_unlock(&ipa_eth_offload_drivers_lock);

drivers/platform/msm/ipa/ipa_v3/ethernet/ipa_eth_pm.c

+4 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 
 */



#include <linux/ethtool.h>

#include <linux/rtnetlink.h>



#include "ipa_eth_i.h"
@@ -100,7 +101,10 @@ static u32 __fetch_ethtool_link_speed(struct ipa_eth_device *eth_dev) 
	int rc;

	struct ethtool_link_ksettings link_ksettings;



	rtnl_lock();

	rc = __ethtool_get_link_ksettings(eth_dev->net_dev, &link_ksettings);

	rtnl_unlock();



	if (rc) {

		ipa_eth_dev_err(eth_dev,

			"Failed to obtain link settings via ethtool");

include/linux/ipa_eth.h

+2 −0
Original line number Diff line number Diff line
@@ -440,6 +440,7 @@ struct ipa_eth_channel { 
 * @start_on_resume: Allow start upon driver resume

 * @start_on_timeout: Timeout in milliseconds after which @start is enabled

 * @start_timer: Timer associated with @start_on_timer

 * @state: Device state

 * @if_state: Interface state - one or more bit numbers IPA_ETH_IF_ST_*

 * @pm_handle: IPA PM client handle for the device

 * @bus_priv: Private field for use by offload subsystem bus layer
@@ -478,6 +479,7 @@ struct ipa_eth_device { 
	u32 start_on_timeout;

	struct timer_list start_timer;



	unsigned long state;

	unsigned long if_state;



	u32 pm_handle;