drivers/net/wan/wanxl.h

Source file repositories/reference/linux-study-clean/drivers/net/wan/wanxl.h

File Facts

System
Linux kernel
Corpus path
drivers/net/wan/wanxl.h
Extension
.h
Size
4349 bytes
Lines
150
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

#define RESET_WHILE_LOADING 0

/* you must rebuild the firmware if any of the following is changed */
#define DETECT_RAM 0		/* needed for > 4MB RAM, 16 MB maximum */
#define QUICC_MEMCPY_USES_PLX 1	/* must be used if the host has > 256 MB RAM */


#define STATUS_CABLE_V35	2
#define STATUS_CABLE_X21	3
#define STATUS_CABLE_V24	4
#define STATUS_CABLE_EIA530	5
#define STATUS_CABLE_INVALID	6
#define STATUS_CABLE_NONE	7

#define STATUS_CABLE_DCE	0x8000
#define STATUS_CABLE_DSR	0x0010
#define STATUS_CABLE_DCD	0x0008
#define STATUS_CABLE_PM_SHIFT	5

#define PDM_OFFSET 0x1000

#define TX_BUFFERS 10		/* per port */
#define RX_BUFFERS 30
#define RX_QUEUE_LENGTH 40	/* card->host queue length - per card */

#define PACKET_EMPTY		0x00
#define PACKET_FULL		0x10
#define PACKET_SENT		0x20 /* TX only */
#define PACKET_UNDERRUN		0x30 /* TX only */
#define PACKET_PORT_MASK	0x03 /* RX only */

/* bit numbers in PLX9060 doorbell registers */
#define DOORBELL_FROM_CARD_TX_0		0 /* packet sent by the card */
#define DOORBELL_FROM_CARD_TX_1		1
#define DOORBELL_FROM_CARD_TX_2		2
#define DOORBELL_FROM_CARD_TX_3		3
#define DOORBELL_FROM_CARD_RX		4
#define DOORBELL_FROM_CARD_CABLE_0	5 /* cable/PM/etc. changed */
#define DOORBELL_FROM_CARD_CABLE_1	6
#define DOORBELL_FROM_CARD_CABLE_2	7
#define DOORBELL_FROM_CARD_CABLE_3	8

#define DOORBELL_TO_CARD_OPEN_0		0
#define DOORBELL_TO_CARD_OPEN_1		1
#define DOORBELL_TO_CARD_OPEN_2		2
#define DOORBELL_TO_CARD_OPEN_3		3
#define DOORBELL_TO_CARD_CLOSE_0	4
#define DOORBELL_TO_CARD_CLOSE_1	5
#define DOORBELL_TO_CARD_CLOSE_2	6
#define DOORBELL_TO_CARD_CLOSE_3	7
#define DOORBELL_TO_CARD_TX_0		8 /* outbound packet queued */
#define DOORBELL_TO_CARD_TX_1		9
#define DOORBELL_TO_CARD_TX_2		10
#define DOORBELL_TO_CARD_TX_3		11

/* firmware-only status bits, starting from last DOORBELL_TO_CARD + 1 */
#define TASK_SCC_0			12
#define TASK_SCC_1			13
#define TASK_SCC_2			14
#define TASK_SCC_3			15

#define ALIGN32(x) (((x) + 3) & 0xFFFFFFFC)
#define BUFFER_LENGTH	ALIGN32(HDLC_MAX_MRU + 4) /* 4 bytes for 32-bit CRC */

/* Address of TX and RX buffers in 68360 address space */
#define BUFFERS_ADDR	0x4000	/* 16 KB */

#ifndef __ASSEMBLER__
#define PLX_OFFSET		0
#else
#define PLX_OFFSET		PLX + 0x80
#endif

#define PLX_MAILBOX_0		(PLX_OFFSET + 0x40)
#define PLX_MAILBOX_1		(PLX_OFFSET + 0x44)
#define PLX_MAILBOX_2		(PLX_OFFSET + 0x48)
#define PLX_MAILBOX_3		(PLX_OFFSET + 0x4C)
#define PLX_MAILBOX_4		(PLX_OFFSET + 0x50)
#define PLX_MAILBOX_5		(PLX_OFFSET + 0x54)
#define PLX_MAILBOX_6		(PLX_OFFSET + 0x58)
#define PLX_MAILBOX_7		(PLX_OFFSET + 0x5C)
#define PLX_DOORBELL_TO_CARD	(PLX_OFFSET + 0x60)
#define PLX_DOORBELL_FROM_CARD	(PLX_OFFSET + 0x64)
#define PLX_INTERRUPT_CS	(PLX_OFFSET + 0x68)
#define PLX_CONTROL		(PLX_OFFSET + 0x6C)

#ifdef __ASSEMBLER__
#define PLX_DMA_0_MODE		(PLX + 0x100)
#define PLX_DMA_0_PCI		(PLX + 0x104)
#define PLX_DMA_0_LOCAL		(PLX + 0x108)

Annotation

Implementation Notes