Commit a23b8872 authored by Igor Mammedov's avatar Igor Mammedov Committed by Michael S. Tsirkin
Browse files

acpi add aml_dma() 



Signed-off-by: default avatarIgor Mammedov <imammedo@redhat.com>
Reviewed-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 25c1432e

hw/acpi/aml-build.c

+14 −0
Original line number Diff line number Diff line
@@ -1275,6 +1275,20 @@ Aml *aml_qword_memory(AmlDecode dec, AmlMinFixed min_fixed, 
                             addr_trans, len, flags);

}



/* ACPI 1.0b: 6.4.2.2 DMA Format/6.4.2.2.1 ASL Macro for DMA Descriptor */

Aml *aml_dma(AmlDmaType typ, AmlDmaBusMaster bm, AmlTransferSize sz,

             uint8_t channel)

{

    Aml *var = aml_alloc();

    uint8_t flags = sz | bm << 2 | typ << 5;



    assert(channel < 8);

    build_append_byte(var->buf, 0x2A);    /* Byte 0: DMA Descriptor */

    build_append_byte(var->buf, 1U << channel); /* Byte 1: _DMA - DmaChannel */

    build_append_byte(var->buf, flags);   /* Byte 2 */

    return var;

}



/* ACPI 1.0b: 16.2.5.3 Type 1 Opcodes Encoding: DefSleep */

Aml *aml_sleep(uint64_t msec)

{

include/hw/acpi/aml-build.h

+20 −0
Original line number Diff line number Diff line
@@ -34,6 +34,24 @@ struct Aml { 
};

typedef struct Aml Aml;



typedef enum {

    AML_COMPATIBILITY = 0,

    AML_TYPEA = 1,

    AML_TYPEB = 2,

    AML_TYPEF = 3,

} AmlDmaType;



typedef enum {

    AML_NOTBUSMASTER = 0,

    AML_BUSMASTER = 1,

} AmlDmaBusMaster;



typedef enum {

    AML_TRANSFER8 = 0,

    AML_TRANSFER8_16 = 1,

    AML_TRANSFER16 = 2,

} AmlTransferSize;



typedef enum {

    AML_DECODE10 = 0,

    AML_DECODE16 = 1,
@@ -305,6 +323,8 @@ Aml *aml_qword_memory(AmlDecode dec, AmlMinFixed min_fixed, 
                      uint64_t addr_gran, uint64_t addr_min,

                      uint64_t addr_max, uint64_t addr_trans,

                      uint64_t len);

Aml *aml_dma(AmlDmaType typ, AmlDmaBusMaster bm, AmlTransferSize sz,

             uint8_t channel);

Aml *aml_sleep(uint64_t msec);



/* Block AML object primitives */