drivers/net/wireless/intel/iwlwifi/iwl-scd.h

Source file repositories/reference/linux-study-clean/drivers/net/wireless/intel/iwlwifi/iwl-scd.h

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/intel/iwlwifi/iwl-scd.h
Extension
.h
Size
1983 bytes
Lines
85
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __iwl_scd_h__
#define __iwl_scd_h__

#include "iwl-trans.h"
#include "iwl-io.h"
#include "iwl-prph.h"


static inline void iwl_scd_txq_set_chain(struct iwl_trans *trans,
					 u16 txq_id)
{
	iwl_set_bits_prph(trans, SCD_QUEUECHAIN_SEL, BIT(txq_id));
}

static inline void iwl_scd_txq_enable_agg(struct iwl_trans *trans,
					  u16 txq_id)
{
	iwl_set_bits_prph(trans, SCD_AGGR_SEL, BIT(txq_id));
}

static inline void iwl_scd_txq_disable_agg(struct iwl_trans *trans,
					   u16 txq_id)
{
	iwl_clear_bits_prph(trans, SCD_AGGR_SEL, BIT(txq_id));
}

static inline void iwl_scd_disable_agg(struct iwl_trans *trans)
{
	iwl_set_bits_prph(trans, SCD_AGGR_SEL, 0);
}

static inline void iwl_scd_activate_fifos(struct iwl_trans *trans)
{
	iwl_write_prph(trans, SCD_TXFACT, IWL_MASK(0, 7));
}

static inline void iwl_scd_deactivate_fifos(struct iwl_trans *trans)
{
	iwl_write_prph(trans, SCD_TXFACT, 0);
}

static inline void iwl_scd_enable_set_active(struct iwl_trans *trans,
					     u32 value)
{
	iwl_write_prph(trans, SCD_EN_CTRL, value);
}

static inline unsigned int SCD_QUEUE_WRPTR(unsigned int chnl)
{
	if (chnl < 20)
		return SCD_BASE + 0x18 + chnl * 4;
	WARN_ON_ONCE(chnl >= 32);
	return SCD_BASE + 0x284 + (chnl - 20) * 4;
}

static inline unsigned int SCD_QUEUE_RDPTR(unsigned int chnl)
{
	if (chnl < 20)
		return SCD_BASE + 0x68 + chnl * 4;
	WARN_ON_ONCE(chnl >= 32);
	return SCD_BASE + 0x2B4 + chnl * 4;
}

static inline unsigned int SCD_QUEUE_STATUS_BITS(unsigned int chnl)
{
	if (chnl < 20)
		return SCD_BASE + 0x10c + chnl * 4;
	WARN_ON_ONCE(chnl >= 32);
	return SCD_BASE + 0x334 + chnl * 4;
}

static inline void iwl_scd_txq_set_inactive(struct iwl_trans *trans,
					    u16 txq_id)
{
	iwl_write_prph(trans, SCD_QUEUE_STATUS_BITS(txq_id),
		       (0 << SCD_QUEUE_STTS_REG_POS_ACTIVE)|
		       (1 << SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
}

#endif

Annotation

Implementation Notes