Re: [RFC v4 03/31] hw/arm/smmuv3: Introduce secure registers

[Mostafa Saleh <smostafa@google.com>]

On Sat, Feb 21, 2026 at 06:02:22PM +0800, Tao Tang wrote:
> The Arm SMMUv3 architecture defines a set of registers for managing
> secure transactions and context.
> 
> This patch introduces the definitions for these secure registers within
> the SMMUv3 device model internal header.
> 
> Signed-off-by: Tao Tang <tangtao1634@phytium.com.cn>
> Reviewed-by: Eric Auger <eric.auger@redhat.com>
> Link: https://lore.kernel.org/qemu-devel/759ec110-365f-488b-802d-c7bb1efe30bc@redhat.com/

Reviewed-by: Mostafa Saleh <smostafa@google.com>

Thanks,
Mostafa

> ---
>  include/hw/arm/smmuv3-common.h | 70 +++++++++++++++++++++++++++++++++-
>  1 file changed, 69 insertions(+), 1 deletion(-)
> 
> diff --git a/include/hw/arm/smmuv3-common.h b/include/hw/arm/smmuv3-common.h
> index 9f78bbe89eb..c40fa46fb88 100644
> --- a/include/hw/arm/smmuv3-common.h
> +++ b/include/hw/arm/smmuv3-common.h
> @@ -269,7 +269,7 @@ REG32(CD_5, 20)
>      ((sel) ? ((cd)->word[4] = FIELD_DP32((cd)->word[4], CD_4, NSCFG1, (v))) : \
>               ((cd)->word[2] = FIELD_DP32((cd)->word[2], CD_2, NSCFG0, (v))))
>  
> -/* MMIO Registers */
> +/* MMIO Registers. Shared by Non-secure/Realm/Root states. */
>  
>  REG32(IDR0,                0x0)
>      FIELD(IDR0, S2P,         0 , 1)
> @@ -356,6 +356,7 @@ REG32(CR0,                 0x20)
>      FIELD(CR0, CMDQEN,        3, 1)
>  
>  #define SMMU_CR0_RESERVED 0xFFFFFA20
> +#define SMMU_S_CR0_RESERVED 0xFFFFFC12
>  
>  REG32(CR0ACK,              0x24)
>  REG32(CR1,                 0x28)
> @@ -414,6 +415,73 @@ REG32(EVENTQ_IRQ_CFG2,     0xbc)
>  
>  #define A_IDREGS           0xfd0
>  
> +#define SMMU_SECURE_REG_START 0x8000 /* Start of secure-only registers */
> +
> +REG32(S_IDR0,               0x8000)
> +    FIELD(S_IDR0, STALL_MODEL, 24, 2)
> +REG32(S_IDR1,               0x8004)
> +    FIELD(S_IDR1, S_SIDSIZE,          0 , 6)
> +    FIELD(S_IDR1, SEL2,               29, 1)
> +    FIELD(S_IDR1, SECURE_IMPL,        31, 1)
> +
> +REG32(S_IDR2,               0x8008)
> +REG32(S_IDR3,               0x800c)
> +REG32(S_IDR4,               0x8010)
> +
> +REG32(S_CR0,                0x8020)
> +    FIELD(S_CR0, SMMUEN,      0, 1)
> +    FIELD(S_CR0, EVENTQEN,    2, 1)
> +    FIELD(S_CR0, CMDQEN,      3, 1)
> +
> +REG32(S_CR0ACK,             0x8024)
> +REG32(S_CR1,                0x8028)
> +REG32(S_CR2,                0x802c)
> +
> +REG32(S_INIT,               0x803c)
> +    FIELD(S_INIT, INV_ALL,    0, 1)
> +
> +REG32(S_GBPA,               0x8044)
> +    FIELD(S_GBPA, ABORT,     20, 1)
> +    FIELD(S_GBPA, UPDATE,    31, 1)
> +
> +REG32(S_IRQ_CTRL,           0x8050)
> +    FIELD(S_IRQ_CTRL, GERROR_IRQEN,    0, 1)
> +    FIELD(S_IRQ_CTRL, EVENTQ_IRQEN,    2, 1)
> +
> +REG32(S_IRQ_CTRLACK,        0x8054)
> +
> +REG32(S_GERROR,             0x8060)
> +    FIELD(S_GERROR, CMDQ_ERR,          0, 1)
> +
> +#define SMMU_GERROR_IRQ_CFG0_RESERVED   0x00FFFFFFFFFFFFFC
> +#define SMMU_GERROR_IRQ_CFG2_RESERVED   0x000000000000003F
> +
> +#define SMMU_STRTAB_BASE_RESERVED       0x40FFFFFFFFFFFFC0
> +#define SMMU_QUEUE_BASE_RESERVED        0x40FFFFFFFFFFFFFF
> +#define SMMU_EVENTQ_IRQ_CFG0_RESERVED   0x00FFFFFFFFFFFFFC
> +
> +REG32(S_GERRORN,            0x8064)
> +REG64(S_GERROR_IRQ_CFG0,    0x8068)
> +REG32(S_GERROR_IRQ_CFG1,    0x8070)
> +REG32(S_GERROR_IRQ_CFG2,    0x8074)
> +REG64(S_STRTAB_BASE,        0x8080)
> +REG32(S_STRTAB_BASE_CFG,    0x8088)
> +    FIELD(S_STRTAB_BASE_CFG, LOG2SIZE, 0, 6)
> +    FIELD(S_STRTAB_BASE_CFG, SPLIT,    6, 5)
> +    FIELD(S_STRTAB_BASE_CFG, FMT,     16, 2)
> +
> +REG64(S_CMDQ_BASE,          0x8090)
> +REG32(S_CMDQ_PROD,          0x8098)
> +REG32(S_CMDQ_CONS,          0x809c)
> +    FIELD(S_CMDQ_CONS, ERR,           24, 7)
> +
> +REG64(S_EVENTQ_BASE,        0x80a0)
> +REG32(S_EVENTQ_PROD,        0x80a8)
> +REG32(S_EVENTQ_CONS,        0x80ac)
> +REG64(S_EVENTQ_IRQ_CFG0,    0x80b0)
> +REG32(S_EVENTQ_IRQ_CFG1,    0x80b8)
> +REG32(S_EVENTQ_IRQ_CFG2,    0x80bc)
> +
>  /* Commands */
>  
>  typedef enum SMMUCommandType {
> -- 
> 2.34.1
>