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Commit 41d5c6f1 authored by Mayank Rana's avatar Mayank Rana
Browse files

f_gsi: Pass 64 byte as max_pkt_size to IPA driver 



USB GSI function driver needs to pass max_pkt_size to IPA driver
based on enumerated USB speed. This change set max_pkt_size as
64 byte instead of 512 byte for full speed mode. It also updates
same value with IPA driver to program required scratch register
for GSI firmware use.

Change-Id: Ia43c2b743a6d5b018053bc822f6d3c757d7a4fb5
Signed-off-by: default avatarMayank Rana <mrana@codeaurora.org>
parent 314af848

drivers/platform/msm/gsi/gsi.c

+13 −4
Original line number Diff line number Diff line
@@ -1202,6 +1202,8 @@ EXPORT_SYMBOL(gsi_register_device); 
int gsi_write_device_scratch(unsigned long dev_hdl,

		struct gsi_device_scratch *val)

{

	unsigned int max_usb_pkt_size = 0;



	if (!gsi_ctx) {

		pr_err("%s:%d gsi context not allocated\n", __func__, __LINE__);

		return -GSI_STATUS_NODEV;
@@ -1220,7 +1222,8 @@ int gsi_write_device_scratch(unsigned long dev_hdl, 


	if (val->max_usb_pkt_size_valid &&

			val->max_usb_pkt_size != 1024 &&

			val->max_usb_pkt_size != 512) {

			val->max_usb_pkt_size != 512 &&

			val->max_usb_pkt_size != 64) {

		GSIERR("bad USB max pkt size dev_hdl=0x%lx sz=%u\n", dev_hdl,

				val->max_usb_pkt_size);

		return -GSI_STATUS_INVALID_PARAMS;
@@ -1230,9 +1233,15 @@ int gsi_write_device_scratch(unsigned long dev_hdl, 
	if (val->mhi_base_chan_idx_valid)

		gsi_ctx->scratch.word0.s.mhi_base_chan_idx =

			val->mhi_base_chan_idx;

	if (val->max_usb_pkt_size_valid)

		gsi_ctx->scratch.word0.s.max_usb_pkt_size =



	if (val->max_usb_pkt_size_valid) {

		max_usb_pkt_size = 2;

		if (val->max_usb_pkt_size > 64)

			max_usb_pkt_size =

				(val->max_usb_pkt_size == 1024) ? 1 : 0;

		gsi_ctx->scratch.word0.s.max_usb_pkt_size = max_usb_pkt_size;

	}



	gsi_writel(gsi_ctx->scratch.word0.val,

			gsi_ctx->base +

			GSI_EE_n_CNTXT_SCRATCH_0_OFFS(gsi_ctx->per.ee));

drivers/platform/msm/ipa/ipa_clients/ipa_usb.c

+1 −1
Original line number Diff line number Diff line
@@ -1493,7 +1493,7 @@ static bool ipa3_usb_check_connect_params( 
	IPA_USB_DBG_LOW("max_supported_bandwidth_mbps = %d\n",

		params->max_supported_bandwidth_mbps);



	if (params->max_pkt_size < IPA_USB_HIGH_SPEED_512B  ||

	if (params->max_pkt_size < IPA_USB_FULL_SPEED_64B  ||

		params->max_pkt_size > IPA_USB_SUPER_SPEED_1024B  ||

		params->ipa_to_usb_xferrscidx > 127 ||

		(params->teth_prot != IPA_USB_DIAG &&

drivers/usb/gadget/function/f_gsi.c

+3 −2
Original line number Diff line number Diff line
@@ -586,8 +586,9 @@ static int ipa_connect_channels(struct gsi_data_port *d_port) 


	/* Populate connection params */

	conn_params->max_pkt_size =

		(cdev->gadget->speed >= USB_SPEED_SUPER) ?

		IPA_USB_SUPER_SPEED_1024B : IPA_USB_HIGH_SPEED_512B;

		le16_to_cpu(d_port->in_ep->desc->wMaxPacketSize);

	log_event_dbg("%s(): max_pkt_size:%d\n", __func__,

		conn_params->max_pkt_size);

	conn_params->ipa_to_usb_xferrscidx =

			d_port->in_xfer_rsc_index;

	conn_params->usb_to_ipa_xferrscidx =

include/linux/ipa_usb.h

+2 −1
Original line number Diff line number Diff line
@@ -40,6 +40,7 @@ enum ipa_usb_notify_event { 
};



enum ipa_usb_max_usb_packet_size {

	IPA_USB_FULL_SPEED_64B = 64,

	IPA_USB_HIGH_SPEED_512B = 512,

	IPA_USB_SUPER_SPEED_1024B = 1024

};
@@ -62,7 +63,7 @@ struct ipa_usb_teth_prot_params { 
 * ipa_usb_xdci_connect_params - parameters required to start IN, OUT

 * channels, and connect RNDIS/ECM/teth_bridge

 *

 * @max_pkt_size:          high speed or full speed

 * @max_pkt_size:          USB speed (full/high/super/super-speed plus)

 * @ipa_to_usb_xferrscidx: Transfer Resource Index (XferRscIdx) for IN channel.

 *                         The hardware-assigned transfer resource index for the

 *                         transfer, which was returned in response to the

include/linux/msm_gsi.h

+1 −1
Original line number Diff line number Diff line
@@ -772,7 +772,7 @@ union __packed gsi_evt_scratch { 
 *                           MHI base channel index

 * @max_usb_pkt_size_valid:  is max_usb_pkt_size valid?

 * @max_usb_pkt_size:        max USB packet size in bytes (valid values are

 *                           512 and 1024)

 *                           64, 512 and 1024)

 */

struct gsi_device_scratch {

	bool mhi_base_chan_idx_valid;