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Commit c6cac6d5 authored by Skylar Chang's avatar Skylar Chang Committed by Kyle Yan
Browse files

msm: rmnet_ipa3: add RMNET_IOCTL_GET_SG_SUPPORT support 



While the transport always supports scatter-gather, the
capability advertised through this IOCTL is configured
from the device tree. Add support on ipav3.

Change-Id: Idf626cb5a22d2ed5152ab76dcc5fe56696a631a6
Signed-off-by: default avatarSkylar Chang <chiaweic@codeaurora.org>
parent b265655e

Documentation/devicetree/bindings/platform/msm/rmnet_ipa3.txt

+2 −0
Original line number Diff line number Diff line
@@ -8,6 +8,8 @@ Required properties: 
Optional:

- qcom,rmnet-ipa-ssr: determine if modem SSR is supported

- qcom,ipa-loaduC: indicate that ipa uC should be loaded

- qcom,ipa-advertise-sg-support: determine how to respond to a query

regarding scatter-gather capability



Example:

	qcom,rmnet-ipa3 {

drivers/platform/msm/ipa/ipa_v3/rmnet_ipa.c

+22 −2
Original line number Diff line number Diff line
@@ -82,6 +82,7 @@ enum ipa3_wwan_device_status { 
struct ipa3_rmnet_plat_drv_res {

	bool ipa_rmnet_ssr;

	bool ipa_loaduC;

	bool ipa_advertise_sg_support;

};



/**
@@ -1219,6 +1220,8 @@ static void apps_ipa_packet_receive_notify(void *priv, 
	dev->stats.rx_bytes += packet_len;

}



static struct ipa3_rmnet_plat_drv_res ipa3_rmnet_res = {0, };



/**

 * ipa3_wwan_ioctl() - I/O control for wwan network driver.

 *
@@ -1349,6 +1352,15 @@ static int ipa3_wwan_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 
				sizeof(struct rmnet_ioctl_extended_s)))

				rc = -EFAULT;

			break;

		/* GET SG support */

		case RMNET_IOCTL_GET_SG_SUPPORT:

			extend_ioctl_data.u.data =

				ipa3_rmnet_res.ipa_advertise_sg_support;

			if (copy_to_user((u8 *)ifr->ifr_ifru.ifru_data,

				&extend_ioctl_data,

				sizeof(struct rmnet_ioctl_extended_s)))

				rc = -EFAULT;

			break;

		/*  Get endpoint ID  */

		case RMNET_IOCTL_GET_EPID:

			IPAWANDBG("get ioctl: RMNET_IOCTL_GET_EPID\n");
@@ -1915,8 +1927,6 @@ static struct notifier_block ipa3_ssr_notifier = { 
	.notifier_call = ipa3_ssr_notifier_cb,

};



static struct ipa3_rmnet_plat_drv_res ipa3_rmnet_res = {0, };



static int get_ipa_rmnet_dts_configuration(struct platform_device *pdev,

		struct ipa3_rmnet_plat_drv_res *ipa_rmnet_drv_res)

{
@@ -1930,6 +1940,12 @@ static int get_ipa_rmnet_dts_configuration(struct platform_device *pdev, 
			"qcom,ipa-loaduC");

	pr_info("IPA ipa-loaduC = %s\n",

		ipa_rmnet_drv_res->ipa_loaduC ? "True" : "False");



	ipa_rmnet_drv_res->ipa_advertise_sg_support =

		of_property_read_bool(pdev->dev.of_node,

		"qcom,ipa-advertise-sg-support");

	pr_info("IPA SG support = %s\n",

		ipa_rmnet_drv_res->ipa_advertise_sg_support ? "True" : "False");

	return 0;

}
@@ -2106,6 +2122,10 @@ static int ipa3_wwan_probe(struct platform_device *pdev) 
		goto set_perf_err;

	/* IPA_RM configuration ends */



	/* Enable SG support in netdevice. */

	if (ipa3_rmnet_res.ipa_advertise_sg_support)

		dev->hw_features |= NETIF_F_SG;



	ret = register_netdev(dev);

	if (ret) {

		IPAWANERR("unable to register ipa_netdev %d rc=%d\n",