msm: ipa: enable SYSPIPE_ERR_DETECTION bit for deaggr_err

We observe the IPA RX stall due to the DEAGGR_ERR_IRQ
of PACKET_SIZE > FRAME_SIZE on rndis.
In IPA, some of de-aggregation error handling checks
are dependent on the syspipe_err_detection config bit.
Adding IGNORE_MIN_PKT_ERR bit for rndis as well based
on recommendations.

Change-Id: Ice434c163091392ba9db386139dc5e439fb4e4fd

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

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2013-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013-2020, The Linux Foundation. All rights reserved.
  */
 
 #include <linux/atomic.h>
@@ -435,8 +435,10 @@ static struct ipa_ep_cfg usb_to_ipa_ep_cfg_deaggr_en = {
 	},
 	.deaggr = {
 		.deaggr_hdr_len = sizeof(struct rndis_pkt_hdr),
+		.syspipe_err_detection = true,
 		.packet_offset_valid = true,
 		.packet_offset_location = 8,
+		.ignore_min_pkt_err = true,
 		.max_packet_len = 8192, /* Will be overridden*/
 	},
 	.route = {

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

@@ -5656,6 +5656,9 @@ int ipa3_cfg_ep_deaggr(u32 clnt_hdl,
 		clnt_hdl,
 		ep_deaggr->deaggr_hdr_len);
 
+	IPADBG("syspipe_err_detection=%d\n",
+		ep_deaggr->syspipe_err_detection);
+
 	IPADBG("packet_offset_valid=%d\n",
 		ep_deaggr->packet_offset_valid);
 
@@ -5663,6 +5666,9 @@ int ipa3_cfg_ep_deaggr(u32 clnt_hdl,
 		ep_deaggr->packet_offset_location,
 		ep_deaggr->max_packet_len);
 
+	IPADBG("ignore_min_pkt_err=%d\n",
+		ep_deaggr->ignore_min_pkt_err);
+
 	ep = &ipa3_ctx->ep[clnt_hdl];
 
 	/* copy over EP cfg */

drivers/platform/msm/ipa/ipa_v3/ipahal/ipahal_reg.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2012-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2020, The Linux Foundation. All rights reserved.
  */
 
 #include <linux/init.h>
@@ -1678,6 +1678,37 @@ static void ipareg_construct_endp_init_deaggr_n(
 		IPA_ENDP_INIT_DEAGGR_n_MAX_PACKET_LEN_BMSK);
 }
 
+static void ipareg_construct_endp_init_deaggr_n_v4_5(
+		enum ipahal_reg_name reg, const void *fields, u32 *val)
+{
+	struct ipa_ep_cfg_deaggr *ep_deaggr =
+		(struct ipa_ep_cfg_deaggr *)fields;
+
+	IPA_SETFIELD_IN_REG(*val, ep_deaggr->deaggr_hdr_len,
+		IPA_ENDP_INIT_DEAGGR_n_DEAGGR_HDR_LEN_SHFT,
+		IPA_ENDP_INIT_DEAGGR_n_DEAGGR_HDR_LEN_BMSK);
+
+	IPA_SETFIELD_IN_REG(*val, ep_deaggr->syspipe_err_detection,
+		IPA_ENDP_INIT_DEAGGR_n_SYSPIPE_ERR_DETECTION_SHFT,
+		IPA_ENDP_INIT_DEAGGR_n_SYSPIPE_ERR_DETECTION_BMSK);
+
+	IPA_SETFIELD_IN_REG(*val, ep_deaggr->packet_offset_valid,
+		IPA_ENDP_INIT_DEAGGR_n_PACKET_OFFSET_VALID_SHFT,
+		IPA_ENDP_INIT_DEAGGR_n_PACKET_OFFSET_VALID_BMSK);
+
+	IPA_SETFIELD_IN_REG(*val, ep_deaggr->packet_offset_location,
+		IPA_ENDP_INIT_DEAGGR_n_PACKET_OFFSET_LOCATION_SHFT,
+		IPA_ENDP_INIT_DEAGGR_n_PACKET_OFFSET_LOCATION_BMSK);
+
+	IPA_SETFIELD_IN_REG(*val, ep_deaggr->ignore_min_pkt_err,
+		IPA_ENDP_INIT_DEAGGR_n_IGNORE_MIN_PKT_ERR_SHFT,
+		IPA_ENDP_INIT_DEAGGR_n_IGNORE_MIN_PKT_ERR_BMSK);
+
+	IPA_SETFIELD_IN_REG(*val, ep_deaggr->max_packet_len,
+		IPA_ENDP_INIT_DEAGGR_n_MAX_PACKET_LEN_SHFT,
+		IPA_ENDP_INIT_DEAGGR_n_MAX_PACKET_LEN_BMSK);
+}
+
 static void ipareg_construct_endp_init_hol_block_en_n(
 	enum ipahal_reg_name reg, const void *fields, u32 *val)
 {
@@ -3374,7 +3405,7 @@ static struct ipahal_reg_obj ipahal_reg_objs[IPA_HW_MAX][IPA_REG_MAX] = {
 		ipareg_construct_endp_init_cfg_n, ipareg_parse_dummy,
 		0x00000808, 0x70, 0, 30, 1},
 	[IPA_HW_v4_5][IPA_ENDP_INIT_DEAGGR_n] = {
-		ipareg_construct_endp_init_deaggr_n,
+		ipareg_construct_endp_init_deaggr_n_v4_5,
 		ipareg_parse_dummy,
 		0x00000834, 0x70, 0, 12, 1},
 	[IPA_HW_v4_5][IPA_ENDP_INIT_CTRL_n] = {

drivers/platform/msm/ipa/ipa_v3/ipahal/ipahal_reg_i.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2012-2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2012-2020, The Linux Foundation. All rights reserved.
  */
 
 #ifndef _IPAHAL_REG_I_H_
@@ -215,10 +215,14 @@ int ipahal_reg_init(enum ipa_hw_type ipa_hw_type);
 /* IPA_ENDP_INIT_DEAGGR_n register */
 #define IPA_ENDP_INIT_DEAGGR_n_MAX_PACKET_LEN_BMSK 0xFFFF0000
 #define IPA_ENDP_INIT_DEAGGR_n_MAX_PACKET_LEN_SHFT 0x10
+#define IPA_ENDP_INIT_DEAGGR_n_IGNORE_MIN_PKT_ERR_BMSK 0x4000
+#define IPA_ENDP_INIT_DEAGGR_n_IGNORE_MIN_PKT_ERR_SHFT 0xe
 #define IPA_ENDP_INIT_DEAGGR_n_PACKET_OFFSET_LOCATION_BMSK 0x3F00
 #define IPA_ENDP_INIT_DEAGGR_n_PACKET_OFFSET_LOCATION_SHFT 0x8
 #define IPA_ENDP_INIT_DEAGGR_n_PACKET_OFFSET_VALID_BMSK  0x80
 #define IPA_ENDP_INIT_DEAGGR_n_PACKET_OFFSET_VALID_SHFT 0x7
+#define IPA_ENDP_INIT_DEAGGR_n_SYSPIPE_ERR_DETECTION_BMSK 0x40
+#define IPA_ENDP_INIT_DEAGGR_n_SYSPIPE_ERR_DETECTION_SHFT 0x6
 #define IPA_ENDP_INIT_DEAGGR_n_DEAGGR_HDR_LEN_BMSK 0x3F
 #define IPA_ENDP_INIT_DEAGGR_n_DEAGGR_HDR_LEN_SHFT 0x0