drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c
Extension
.c
Size
69514 bytes
Lines
2514
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

struct brcmf_skbuff_cb {
	u16 bus_flags;
	u16 if_flags;
	u32 htod;
	u16 htod_seq;
	enum brcmf_fws_skb_state state;
	struct brcmf_fws_mac_descriptor *mac;
};

/*
 * macro casting skbuff control buffer to struct brcmf_skbuff_cb.
 */
#define brcmf_skbcb(skb)	((struct brcmf_skbuff_cb *)((skb)->cb))

/*
 * sk_buff control if flags
 *
 *	b[11]  - packet sent upon firmware request.
 *	b[10]  - packet only contains signalling data.
 *	b[9]   - packet is a tx packet.
 *	b[8]   - packet used requested credit
 *	b[7]   - interface in AP mode.
 *	b[3:0] - interface index.
 */
#define BRCMF_SKB_IF_FLAGS_REQUESTED_MASK	0x0800
#define BRCMF_SKB_IF_FLAGS_REQUESTED_SHIFT	11
#define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_MASK	0x0400
#define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_SHIFT	10
#define BRCMF_SKB_IF_FLAGS_TRANSMIT_MASK        0x0200
#define BRCMF_SKB_IF_FLAGS_TRANSMIT_SHIFT	9
#define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_MASK	0x0100
#define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_SHIFT	8
#define BRCMF_SKB_IF_FLAGS_IF_AP_MASK		0x0080
#define BRCMF_SKB_IF_FLAGS_IF_AP_SHIFT		7
#define BRCMF_SKB_IF_FLAGS_INDEX_MASK		0x000f
#define BRCMF_SKB_IF_FLAGS_INDEX_SHIFT		0

#define brcmf_skb_if_flags_set_field(skb, field, value) \
	brcmu_maskset16(&(brcmf_skbcb(skb)->if_flags), \
			BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
			BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT, (value))
#define brcmf_skb_if_flags_get_field(skb, field) \
	brcmu_maskget16(brcmf_skbcb(skb)->if_flags, \
			BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \
			BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT)

/*
 * sk_buff control packet identifier
 *
 * 32-bit packet identifier used in PKTTAG tlv from host to dongle.
 *
 * - Generated at the host (e.g. dhd)
 * - Seen as a generic sequence number by firmware except for the flags field.
 *
 * Generation	: b[31]	=> generation number for this packet [host->fw]
 *			   OR, current generation number [fw->host]
 * Flags	: b[30:27] => command, status flags
 * FIFO-AC	: b[26:24] => AC-FIFO id
 * h-slot	: b[23:8] => hanger-slot
 * freerun	: b[7:0] => A free running counter
 */
#define BRCMF_SKB_HTOD_TAG_GENERATION_MASK		0x80000000
#define BRCMF_SKB_HTOD_TAG_GENERATION_SHIFT		31
#define BRCMF_SKB_HTOD_TAG_FLAGS_MASK			0x78000000
#define BRCMF_SKB_HTOD_TAG_FLAGS_SHIFT			27
#define BRCMF_SKB_HTOD_TAG_FIFO_MASK			0x07000000
#define BRCMF_SKB_HTOD_TAG_FIFO_SHIFT			24
#define BRCMF_SKB_HTOD_TAG_HSLOT_MASK			0x00ffff00
#define BRCMF_SKB_HTOD_TAG_HSLOT_SHIFT			8
#define BRCMF_SKB_HTOD_TAG_FREERUN_MASK			0x000000ff
#define BRCMF_SKB_HTOD_TAG_FREERUN_SHIFT		0

#define brcmf_skb_htod_tag_set_field(skb, field, value) \
	brcmu_maskset32(&(brcmf_skbcb(skb)->htod), \
			BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
			BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT, (value))
#define brcmf_skb_htod_tag_get_field(skb, field) \
	brcmu_maskget32(brcmf_skbcb(skb)->htod, \
			BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \
			BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT)

#define BRCMF_SKB_HTOD_SEQ_FROMFW_MASK			0x2000
#define BRCMF_SKB_HTOD_SEQ_FROMFW_SHIFT			13
#define BRCMF_SKB_HTOD_SEQ_FROMDRV_MASK			0x1000
#define BRCMF_SKB_HTOD_SEQ_FROMDRV_SHIFT		12
#define BRCMF_SKB_HTOD_SEQ_NR_MASK			0x0fff
#define BRCMF_SKB_HTOD_SEQ_NR_SHIFT			0

#define brcmf_skb_htod_seq_set_field(skb, field, value) \
	brcmu_maskset16(&(brcmf_skbcb(skb)->htod_seq), \

Annotation

Implementation Notes