[PATCH net-next v2 3/6] net: ipa: define the ENDP_INIT_NAT register
From: Alex Elder <hidden>
Date: 2021-03-24 13:16:38
Also in:
lkml
Subsystem:
networking drivers, qcom ipa driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Alex Elder, Linus Torvalds
Define the ENDP_INIT_NAT register for setting up the NAT configuration for an endpoint. We aren't using NAT at this time, so explicitly set the type to BYPASS for all endpoints. Signed-off-by: Alex Elder <redacted> --- drivers/net/ipa/ipa_endpoint.c | 17 ++++++++++++++++- drivers/net/ipa/ipa_reg.h | 14 +++++++++++++- 2 files changed, 29 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c
index 5f93bd60c7586..38e83cd467b52 100644
--- a/drivers/net/ipa/ipa_endpoint.c
+++ b/drivers/net/ipa/ipa_endpoint.c@@ -1,7 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. - * Copyright (C) 2019-2020 Linaro Ltd. + * Copyright (C) 2019-2021 Linaro Ltd. */ #include <linux/types.h>
@@ -468,6 +468,20 @@ static void ipa_endpoint_init_cfg(struct ipa_endpoint *endpoint) iowrite32(val, endpoint->ipa->reg_virt + offset); } +static void ipa_endpoint_init_nat(struct ipa_endpoint *endpoint) +{ + u32 offset; + u32 val; + + if (!endpoint->toward_ipa) + return; + + offset = IPA_REG_ENDP_INIT_NAT_N_OFFSET(endpoint->endpoint_id); + val = u32_encode_bits(IPA_NAT_BYPASS, NAT_EN_FMASK); + + iowrite32(val, endpoint->ipa->reg_virt + offset); +} + /** * ipa_endpoint_init_hdr() - Initialize HDR endpoint configuration register * @endpoint: Endpoint pointer
@@ -1488,6 +1502,7 @@ static void ipa_endpoint_program(struct ipa_endpoint *endpoint) else (void)ipa_endpoint_program_suspend(endpoint, false); ipa_endpoint_init_cfg(endpoint); + ipa_endpoint_init_nat(endpoint); ipa_endpoint_init_hdr(endpoint); ipa_endpoint_init_hdr_ext(endpoint); ipa_endpoint_init_hdr_metadata_mask(endpoint);
diff --git a/drivers/net/ipa/ipa_reg.h b/drivers/net/ipa/ipa_reg.h
index 36fe746575f6b..bba088e80cd1e 100644
--- a/drivers/net/ipa/ipa_reg.h
+++ b/drivers/net/ipa/ipa_reg.h@@ -1,7 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. - * Copyright (C) 2018-2020 Linaro Ltd. + * Copyright (C) 2018-2021 Linaro Ltd. */ #ifndef _IPA_REG_H_ #define _IPA_REG_H_
@@ -388,6 +388,18 @@ enum ipa_cs_offload_en { IPA_CS_OFFLOAD_DL = 0x2, }; +/* Valid only for TX (IPA consumer) endpoints */ +#define IPA_REG_ENDP_INIT_NAT_N_OFFSET(ep) \ + (0x0000080c + 0x0070 * (ep)) +#define NAT_EN_FMASK GENMASK(1, 0) + +/** enum ipa_nat_en - ENDP_INIT_NAT register NAT_EN field value */ +enum ipa_nat_en { + IPA_NAT_BYPASS = 0x0, + IPA_NAT_SRC = 0x1, + IPA_NAT_DST = 0x2, +}; + #define IPA_REG_ENDP_INIT_HDR_N_OFFSET(ep) \ (0x00000810 + 0x0070 * (ep)) #define HDR_LEN_FMASK GENMASK(5, 0)
--
2.27.0