GITS_CREADR, ITS Read Register

The GITS_CREADR characteristics are:

Purpose

Specifies the offset from GITS_CBASER where the ITS reads the next ITS command.

Configuration

This register is cleared to 0 when a value is written to GITS_CBASER.

Bits [63:32] and bits [31:0] are accessible separately.

Attributes

GITS_CREADR is a 64-bit register.

Field descriptions

63	62	61	60	59	58	57	56	55	54	53	52	51	50	49	48	47	46	45	44	43	42	41	40	39	38	37	36	35	34	33	32
31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
RES0
RES0												Offset															RES0				Stalled

Bits [63:20]

Reserved, RES0.

Offset, bits [19:5]

Bits [19:5] of the offset from GITS_CBASER. Bits [4:0] of the offset are zero.

Bits [4:1]

Reserved, RES0.

Stalled, bit [0]

Reports whether the processing of commands is stalled because of a command error.

Stalled	Meaning
0b0	ITS command queue is not stalled because of a command error.
0b1	ITS command queue is stalled because of a command error.

For more information, see 'The ITS command interface' in ARM® Generic Interrupt Controller Architecture Specification, GIC architecture version 3.0 and version 4.0 (ARM IHI 0069).

Accessing GITS_CREADR

GITS_CREADR can be accessed through the memory-mapped interfaces:

Component	Offset	Instance
GIC ITS control	0x0090	GITS_CREADR

Accesses on this interface are RO.

04/07/2023 11:23; 1b994cb0b8c6d1ae5a9a15edbc8bd6ce3b5c7d68