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Commit 20819ba5 authored by Ghanim Fodi's avatar Ghanim Fodi
Browse files

Moving IPA and GSI driver code to dataipa techpack 



This is a snapshot of IPA and GSI drivers
from msm-5.4 kernel as of
'commit <137a997b> ("msm: ipa: Fix using
generic name for offload connect/disconnect")'.

Change-Id: I8452cf76a1c568c1f89de8b329bdc6e7254694b4
Signed-off-by: default avatarGhanim Fodi <gfodi@codeaurora.org>
parent ba08fe45

Makefile

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# SPDX-License-Identifier: GPL-2.0-only

ccflags-y := -Wno-unused-function

obj-y := dataipa.o
 
#obj-$(CONFIG_GSI) += gsi/

obj-n += gsi/

#obj-$(CONFIG_IPA3) += ipa/

obj-n += ipa/

dataipa.c

deleted100644 → 0
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// SPDX-License-Identifier: GPL-2.0-only



static void _dataipa_techpack_stub(void)

{

}

gsi/Makefile

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# SPDX-License-Identifier: GPL-2.0-only



obj-$(CONFIG_GSI) += gsim.o



gsim-objs := gsi.o



gsim-$(CONFIG_DEBUG_FS) += gsi_dbg.o



gsim-$(CONFIG_IPA_EMULATION) += gsi_emulation.o

gsi/gsi.c

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File added.

Preview size limit exceeded, changes collapsed.

gsi/gsi.h

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/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2015-2019, The Linux Foundation. All rights reserved.

 */



#ifndef GSI_H

#define GSI_H



#include <linux/device.h>

#include <linux/types.h>

#include <linux/completion.h>

#include <linux/mutex.h>

#include <linux/spinlock.h>

#include <linux/msm_gsi.h>

#include <linux/errno.h>

#include <linux/ipc_logging.h>



/*

 * The following for adding code (ie. for EMULATION) not found on x86.

 */

#if defined(CONFIG_IPA_EMULATION)

# include "gsi_emulation_stubs.h"

#endif



#define GSI_ASSERT() \

	BUG()



#define GSI_CHAN_MAX      31

#define GSI_EVT_RING_MAX  24

#define GSI_NO_EVT_ERINDEX 31



#define gsi_readl(c)	(readl_relaxed(c))

#define gsi_writel(v, c)	({ __iowmb(); writel_relaxed((v), (c)); })



#define GSI_IPC_LOGGING(buf, fmt, args...) \

	do { \

		if (buf) \

			ipc_log_string((buf), fmt, __func__, __LINE__, \

				## args); \

	} while (0)



#define GSIDBG(fmt, args...) \

	do { \

		dev_dbg(gsi_ctx->dev, "%s:%d " fmt, __func__, __LINE__, \

		## args);\

		if (gsi_ctx) { \

			GSI_IPC_LOGGING(gsi_ctx->ipc_logbuf, \

				"%s:%d " fmt, ## args); \

			GSI_IPC_LOGGING(gsi_ctx->ipc_logbuf_low, \

				"%s:%d " fmt, ## args); \

		} \

	} while (0)



#define GSIDBG_LOW(fmt, args...) \

	do { \

		dev_dbg(gsi_ctx->dev, "%s:%d " fmt, __func__, __LINE__, \

		## args);\

		if (gsi_ctx) { \

			GSI_IPC_LOGGING(gsi_ctx->ipc_logbuf_low, \

				"%s:%d " fmt, ## args); \

		} \

	} while (0)



#define GSIERR(fmt, args...) \

	do { \

		dev_err(gsi_ctx->dev, "%s:%d " fmt, __func__, __LINE__, \

		## args);\

		if (gsi_ctx) { \

			GSI_IPC_LOGGING(gsi_ctx->ipc_logbuf, \

				"%s:%d " fmt, ## args); \

			GSI_IPC_LOGGING(gsi_ctx->ipc_logbuf_low, \

				"%s:%d " fmt, ## args); \

		} \

	} while (0)



#define GSI_IPC_LOG_PAGES 50



enum gsi_evt_ring_state {

	GSI_EVT_RING_STATE_NOT_ALLOCATED = 0x0,

	GSI_EVT_RING_STATE_ALLOCATED = 0x1,

	GSI_EVT_RING_STATE_ERROR = 0xf

};



enum gsi_chan_state {

	GSI_CHAN_STATE_NOT_ALLOCATED = 0x0,

	GSI_CHAN_STATE_ALLOCATED = 0x1,

	GSI_CHAN_STATE_STARTED = 0x2,

	GSI_CHAN_STATE_STOPPED = 0x3,

	GSI_CHAN_STATE_STOP_IN_PROC = 0x4,

	GSI_CHAN_STATE_ERROR = 0xf

};



struct gsi_ring_ctx {

	spinlock_t slock;

	unsigned long base_va;

	uint64_t base;

	uint64_t wp;

	uint64_t rp;

	uint64_t wp_local;

	uint64_t rp_local;

	uint16_t len;

	uint8_t elem_sz;

	uint16_t max_num_elem;

	uint64_t end;

};



struct gsi_chan_dp_stats {

	unsigned long ch_below_lo;

	unsigned long ch_below_hi;

	unsigned long ch_above_hi;

	unsigned long empty_time;

	unsigned long last_timestamp;

};



struct gsi_chan_stats {

	unsigned long queued;

	unsigned long completed;

	unsigned long callback_to_poll;

	unsigned long poll_to_callback;

	unsigned long poll_pending_irq;

	unsigned long invalid_tre_error;

	unsigned long poll_ok;

	unsigned long poll_empty;

	unsigned long userdata_in_use;

	struct gsi_chan_dp_stats dp;

};



/**

 * struct gsi_user_data - user_data element pointed by the TRE

 * @valid: valid to be cleaned. if its true that means it is being used.

 *	false means its free to overwrite

 * @p: pointer to the user data array element

 */

struct gsi_user_data {

	bool valid;

	void *p;

};



struct gsi_chan_ctx {

	struct gsi_chan_props props;

	enum gsi_chan_state state;

	struct gsi_ring_ctx ring;

	struct gsi_user_data *user_data;

	struct gsi_evt_ctx *evtr;

	struct mutex mlock;

	struct completion compl;

	bool allocated;

	atomic_t poll_mode;

	union __packed gsi_channel_scratch scratch;

	struct gsi_chan_stats stats;

	bool enable_dp_stats;

	bool print_dp_stats;

};



struct gsi_evt_stats {

	unsigned long completed;

};



struct gsi_evt_ctx {

	struct gsi_evt_ring_props props;

	enum gsi_evt_ring_state state;

	uint8_t id;

	struct gsi_ring_ctx ring;

	struct mutex mlock;

	struct completion compl;

	struct gsi_chan_ctx *chan;

	atomic_t chan_ref_cnt;

	union __packed gsi_evt_scratch scratch;

	struct gsi_evt_stats stats;

};



struct gsi_ee_scratch {

	union __packed {

		struct {

			uint32_t inter_ee_cmd_return_code:3;

			uint32_t resvd1:2;

			uint32_t generic_ee_cmd_return_code:3;

			uint32_t resvd2:7;

			uint32_t max_usb_pkt_size:1;

			uint32_t resvd3:8;

			uint32_t mhi_base_chan_idx:8;

		} s;

		uint32_t val;

	} word0;

	uint32_t word1;

};



struct ch_debug_stats {

	unsigned long ch_allocate;

	unsigned long ch_start;

	unsigned long ch_stop;

	unsigned long ch_reset;

	unsigned long ch_de_alloc;

	unsigned long ch_db_stop;

	unsigned long cmd_completed;

};



struct gsi_generic_ee_cmd_debug_stats {

	unsigned long halt_channel;

};



struct gsi_coal_chan_info {

	uint8_t ch_id;

	uint8_t evchid;

};



struct gsi_ctx {

	void __iomem *base;

	struct device *dev;

	struct gsi_per_props per;

	bool per_registered;

	struct gsi_chan_ctx chan[GSI_CHAN_MAX];

	struct ch_debug_stats ch_dbg[GSI_CHAN_MAX];

	struct gsi_evt_ctx evtr[GSI_EVT_RING_MAX];

	struct gsi_generic_ee_cmd_debug_stats gen_ee_cmd_dbg;

	struct mutex mlock;

	spinlock_t slock;

	unsigned long evt_bmap;

	bool enabled;

	atomic_t num_chan;

	atomic_t num_evt_ring;

	struct gsi_ee_scratch scratch;

	int num_ch_dp_stats;

	struct workqueue_struct *dp_stat_wq;

	u32 max_ch;

	u32 max_ev;

	struct completion gen_ee_cmd_compl;

	void *ipc_logbuf;

	void *ipc_logbuf_low;

	struct gsi_coal_chan_info coal_info;

	/*

	 * The following used only on emulation systems.

	 */

	void __iomem *intcntrlr_base;

	u32 intcntrlr_mem_size;

	irq_handler_t intcntrlr_gsi_isr;

	irq_handler_t intcntrlr_client_isr;

};



enum gsi_re_type {

	GSI_RE_XFER = 0x2,

	GSI_RE_IMMD_CMD = 0x3,

	GSI_RE_NOP = 0x4,

	GSI_RE_COAL = 0x8,

};



struct __packed gsi_tre {

	uint64_t buffer_ptr;

	uint16_t buf_len;

	uint16_t resvd1;

	uint16_t chain:1;

	uint16_t resvd4:7;

	uint16_t ieob:1;

	uint16_t ieot:1;

	uint16_t bei:1;

	uint16_t resvd3:5;

	uint8_t re_type;

	uint8_t resvd2;

};



struct __packed gsi_gci_tre {

	uint64_t buffer_ptr:41;

	uint64_t resvd1:7;

	uint64_t buf_len:16;

	uint64_t cookie:40;

	uint64_t resvd2:8;

	uint64_t re_type:8;

	uint64_t resvd3:8;

};



#define GSI_XFER_COMPL_TYPE_GCI 0x28



struct __packed gsi_xfer_compl_evt {

	union {

		uint64_t xfer_ptr;

		struct {

			uint64_t cookie:40;

			uint64_t resvd1:24;

		};

	};

	uint16_t len;

	uint8_t veid;

	uint8_t code;  /* see gsi_chan_evt */

	uint16_t resvd;

	uint8_t type;

	uint8_t chid;

};



enum gsi_err_type {

	GSI_ERR_TYPE_GLOB = 0x1,

	GSI_ERR_TYPE_CHAN = 0x2,

	GSI_ERR_TYPE_EVT = 0x3,

};



enum gsi_err_code {

	GSI_INVALID_TRE_ERR = 0x1,

	GSI_OUT_OF_BUFFERS_ERR = 0x2,

	GSI_OUT_OF_RESOURCES_ERR = 0x3,

	GSI_UNSUPPORTED_INTER_EE_OP_ERR = 0x4,

	GSI_EVT_RING_EMPTY_ERR = 0x5,

	GSI_NON_ALLOCATED_EVT_ACCESS_ERR = 0x6,

	GSI_HWO_1_ERR = 0x8

};



struct __packed gsi_log_err {

	uint32_t arg3:4;

	uint32_t arg2:4;

	uint32_t arg1:4;

	uint32_t code:4;

	uint32_t resvd:3;

	uint32_t virt_idx:5;

	uint32_t err_type:4;

	uint32_t ee:4;

};



enum gsi_ch_cmd_opcode {

	GSI_CH_ALLOCATE = 0x0,

	GSI_CH_START = 0x1,

	GSI_CH_STOP = 0x2,

	GSI_CH_RESET = 0x9,

	GSI_CH_DE_ALLOC = 0xa,

	GSI_CH_DB_STOP = 0xb,

};



enum gsi_evt_ch_cmd_opcode {

	GSI_EVT_ALLOCATE = 0x0,

	GSI_EVT_RESET = 0x9,

	GSI_EVT_DE_ALLOC = 0xa,

};



enum gsi_generic_ee_cmd_opcode {

	GSI_GEN_EE_CMD_HALT_CHANNEL = 0x1,

	GSI_GEN_EE_CMD_ALLOC_CHANNEL = 0x2,

};



enum gsi_generic_ee_cmd_return_code {

	GSI_GEN_EE_CMD_RETURN_CODE_SUCCESS = 0x1,

	GSI_GEN_EE_CMD_RETURN_CODE_CHANNEL_NOT_RUNNING = 0x2,

	GSI_GEN_EE_CMD_RETURN_CODE_INCORRECT_DIRECTION = 0x3,

	GSI_GEN_EE_CMD_RETURN_CODE_INCORRECT_CHANNEL_TYPE = 0x4,

	GSI_GEN_EE_CMD_RETURN_CODE_INCORRECT_CHANNEL_INDEX = 0x5,

	GSI_GEN_EE_CMD_RETURN_CODE_RETRY = 0x6,

	GSI_GEN_EE_CMD_RETURN_CODE_OUT_OF_RESOURCES = 0x7,

};



extern struct gsi_ctx *gsi_ctx;

void gsi_debugfs_init(void);

uint16_t gsi_find_idx_from_addr(struct gsi_ring_ctx *ctx, uint64_t addr);

void gsi_update_ch_dp_stats(struct gsi_chan_ctx *ctx, uint16_t used);



#endif