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Commit dee9033f authored by Ravi Gummadidala's avatar Ravi Gummadidala Committed by Gerrit - the friendly Code Review server
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msm: ipa: add support for wifi offload 



This enables an accelerated data path between IPA and
WLAN and reduces APPS involvement in the data path.

Change-Id: Ic4aff65e97fb0d055a8737691a47b1bbcb45b313
Signed-off-by: default avatarRavi Gummadidala <rgummadi@codeaurora.org>
parent 43a3965c

drivers/platform/msm/ipa/ipa.c

+6 −0
Original line number Diff line number Diff line
@@ -2352,6 +2352,12 @@ static int ipa_init(const struct ipa_plat_drv_res *resource_p, 
	}



	ipa_debugfs_init();

	result = ipa_wdi_init();

	if (result)

		IPAERR(":wdi init failed (%d)\n", -result);

	else

		IPADBG(":wdi init ok\n");



	ipa_dec_client_disable_clks();



	pr_info("IPA driver initialization was successful.\n");

drivers/platform/msm/ipa/ipa_client.c

+1221 −0

File changed.

Preview size limit exceeded, changes collapsed.

drivers/platform/msm/ipa/ipa_dp.c

+7 −0
Original line number Diff line number Diff line
@@ -106,6 +106,10 @@ static void ipa_wq_write_done_status(int src_pipe) 
	u32 cnt;



	WARN_ON(src_pipe >= IPA_NUM_PIPES);



	if (!ipa_ctx->ep[src_pipe].status.status_en)

		return;



	sys = ipa_ctx->ep[src_pipe].sys;

	if (!sys) {

		IPAERR("null sys pipe src %d\n", src_pipe);
@@ -2083,9 +2087,11 @@ void ipa_lan_rx_cb(void *priv, enum ipa_dp_evt_type evt, unsigned long data) 
	struct ipa_hw_pkt_status *status;

	struct ipa_ep_context *ep;

	unsigned int src_pipe;

	u32 metadata;



	status = (struct ipa_hw_pkt_status *)rx_skb->data;

	src_pipe = status->endp_src_idx;

	metadata = status->metadata;

	ep = &ipa_ctx->ep[src_pipe];

	if (unlikely(src_pipe >= IPA_NUM_PIPES ||

		!ep->valid ||
@@ -2100,6 +2106,7 @@ void ipa_lan_rx_cb(void *priv, enum ipa_dp_evt_type evt, unsigned long data) 
				IPA_LAN_RX_HEADER_LENGTH);

	else

		skb_pull(rx_skb, IPA_PKT_STATUS_SIZE);

	*(u8 *)rx_skb->cb = (metadata >> 16) & 0xFF;

	ep->client_notify(ep->priv, IPA_RECEIVE, (unsigned long)(rx_skb));

}

drivers/platform/msm/ipa/ipa_i.h

+15 −0
Original line number Diff line number Diff line
@@ -408,6 +408,7 @@ struct ipa_ep_context { 
	bool keep_ipa_awake;

	bool resume_on_connect;

	struct ipa_wlan_stats wstats;

	u32 wdi_state;



	/* sys MUST be the last element of this struct */

	struct ipa_sys_context *sys;
@@ -644,6 +645,17 @@ struct ipa_active_clients { 


struct ipa_controller;



struct ipa_wdi_ctx {

	bool uc_loaded;

	bool uc_failed;

	struct IpaHwSharedMemWdiMapping_t *ipa_sram_mmio;

	struct mutex lock;

	struct completion cmd_rsp;

	u32 pending_cmd;

	u32 last_resp;

	struct dma_pool *dma_pool;

};



/**

 * struct ipa_context - IPA context

 * @class: pointer to the struct class
@@ -776,6 +788,7 @@ struct ipa_context { 
	u32 curr_ipa_clk_rate;



	struct ipa_wlan_comm_memb wc_memb;

	struct ipa_wdi_ctx wdi;

};



/**
@@ -996,5 +1009,7 @@ int ipa_tag_aggr_force_close(int pipe_num); 
void ipa_active_clients_lock(void);

int ipa_active_clients_trylock(void);

void ipa_active_clients_unlock(void);

int ipa_wdi_init(void);

int ipa_write_qmapid_wdi_pipe(u32 clnt_hdl, u8 qmap_id);



#endif /* _IPA_I_H_ */

drivers/platform/msm/ipa/ipa_ram_mmap.h

+3 −3
Original line number Diff line number Diff line 
/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.

/* Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -44,7 +44,7 @@ 
#define IPA_CANARY_SIZE 4

#define IPA_CANARY_VAL 0xdeadbeef



#define IPA_v2_RAM_OFST_START 0

#define IPA_v2_RAM_OFST_START 128

#define IPA_v2_RAM_V4_FLT_OFST IPA_v2_RAM_OFST_START

#define IPA_v2_RAM_V4_FLT_SIZE 88

#define IPA_v2_RAM_V6_FLT_OFST (IPA_v2_RAM_V4_FLT_OFST + \
@@ -68,7 +68,7 @@ 
#define IPA_v2_RAM_V6_RT_SIZE (IPA_v2_RAM_V6_NUM_INDEX * 4)

#define IPA_v2_RAM_MODEM_HDR_OFST (IPA_v2_RAM_V6_RT_OFST + \

		IPA_v2_RAM_V6_RT_SIZE + IPA_CANARY_SIZE)

#define IPA_v2_RAM_MODEM_HDR_SIZE 320

#define IPA_v2_RAM_MODEM_HDR_SIZE 192

#define IPA_v2_RAM_APPS_HDR_OFST (IPA_v2_RAM_MODEM_HDR_OFST + \

		IPA_v2_RAM_MODEM_HDR_SIZE)

#define IPA_v2_RAM_APPS_HDR_SIZE 72