16-byte extended descriptor (HUM Ch 34.5.1.2 "Extended descriptor", GWDCCi.ETS == 0 && GWDCCi.EDE == 1). More...

#include <ra8_ether_regs.h>

Data Fields
volatile uint8_t	ds_l
	0..7 Descriptor size (low byte).
volatile uint8_t	ds_h: 4
	8..11 Descriptor size (high nibble).
volatile uint8_t	info0: 4
	12..15 Information 0.
volatile uint8_t	err: 3
	16..18 Error bits (data/AXI errors).
volatile uint8_t	die: 1
	19 Descriptor interrupt enable.
volatile uint8_t	dt: 4
	20..23 Descriptor type (ra8_gwdcc_dt_t).
volatile uint8_t	ptr_h
	24..31 Pointer high byte (PTR[39:32]).
volatile uint32_t	ptr_l
	32..63 Pointer low 32 bits.
volatile uint32_t	info1_lo
	64..95 INFO1[31:0].
volatile uint32_t	info1_hi
	96..127 INFO1[63:32].

Detailed Description

16-byte extended descriptor (HUM Ch 34.5.1.2 "Extended descriptor", GWDCCi.ETS == 0 && GWDCCi.EDE == 1).

Bytes 0..7 are the basic descriptor (identical layout to ra8_gwca_basic_descriptor_t – DS / INFO0 / DT / PTR). Bytes 8..15 are INFO1[63:0]. On a TX queue INFO1 carries the transmit metadata (matches FSP layer3_switch_descriptor_t info1_tx): the descriptor format bit and the destination vector that route the frame. The two INFO1 words are exposed as plain uint32_t and the named fields are composed via ra8_gwca_info1_tx_t so the volatile bit-field ABI never varies between toolchains.

See also: ra8_gwca_info1_tx_t

Definition at line 365 of file ra8_ether_regs.h.

Field Documentation

◆ die

volatile uint8_t ra8_gwca_ext_descriptor_t::die

19 Descriptor interrupt enable.

Definition at line 370 of file ra8_ether_regs.h.

◆ ds_h

volatile uint8_t ra8_gwca_ext_descriptor_t::ds_h

8..11 Descriptor size (high nibble).

Definition at line 367 of file ra8_ether_regs.h.

Referenced by internal_tx_ext_init(), and ra8_eth_gwca_default_send().

◆ ds_l

volatile uint8_t ra8_gwca_ext_descriptor_t::ds_l

0..7 Descriptor size (low byte).

Definition at line 366 of file ra8_ether_regs.h.

Referenced by internal_tx_ext_init(), and ra8_eth_gwca_default_send().

◆ dt

volatile uint8_t ra8_gwca_ext_descriptor_t::dt

20..23 Descriptor type (ra8_gwdcc_dt_t).

Definition at line 371 of file ra8_ether_regs.h.

Referenced by internal_tx_ext_init(), internal_tx_ext_rearm(), internal_wait_tx0_done(), and ra8_eth_gwca_default_send().

◆ err

volatile uint8_t ra8_gwca_ext_descriptor_t::err

16..18 Error bits (data/AXI errors).

Definition at line 369 of file ra8_ether_regs.h.

◆ info0

volatile uint8_t ra8_gwca_ext_descriptor_t::info0

12..15 Information 0.

Definition at line 368 of file ra8_ether_regs.h.

◆ info1_hi

volatile uint32_t ra8_gwca_ext_descriptor_t::info1_hi

96..127 INFO1[63:32].

Definition at line 375 of file ra8_ether_regs.h.

Referenced by ra8_eth_gwca_default_send().

◆ info1_lo

volatile uint32_t ra8_gwca_ext_descriptor_t::info1_lo

64..95 INFO1[31:0].

Definition at line 374 of file ra8_ether_regs.h.

Referenced by ra8_eth_gwca_default_send().

◆ ptr_h

volatile uint8_t ra8_gwca_ext_descriptor_t::ptr_h

24..31 Pointer high byte (PTR[39:32]).

Definition at line 372 of file ra8_ether_regs.h.

Referenced by internal_tx_ext_init(), and internal_tx_ext_rearm().

◆ ptr_l

volatile uint32_t ra8_gwca_ext_descriptor_t::ptr_l

32..63 Pointer low 32 bits.

Definition at line 373 of file ra8_ether_regs.h.