[Mesa-dev] [PATCH 4/9] i965: Disassemble atomic operations and other DP:DC1 stuff on Broadwell.

[Eric Anholt]

Kenneth Graunke <kenneth at whitecape.org> writes:

> This is similar to what Eric did for Gen7 a little while ago; it also
> has support for untyped surface reads.
>
> Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
> ---
>  src/mesa/drivers/dri/i965/gen8_disasm.c | 65 +++++++++++++++++++++++++++++++++
>  1 file changed, 65 insertions(+)
>
> diff --git a/src/mesa/drivers/dri/i965/gen8_disasm.c b/src/mesa/drivers/dri/i965/gen8_disasm.c
> index cc3d864..e0ebd8b 100644
> --- a/src/mesa/drivers/dri/i965/gen8_disasm.c
> +++ b/src/mesa/drivers/dri/i965/gen8_disasm.c
> @@ -222,6 +222,39 @@ static const char *const m_sfid[16] = {
>     [HSW_SFID_CRE]                      = "cre",
>  };
>  
> +static const char *const dp_dc1_msg_type[16] = {
> +   [HSW_DATAPORT_DC_PORT1_UNTYPED_SURFACE_READ]      = "untyped surface read",
> +   [HSW_DATAPORT_DC_PORT1_UNTYPED_ATOMIC_OP]         = "DC untyped atomic op",
> +   [HSW_DATAPORT_DC_PORT1_UNTYPED_ATOMIC_OP_SIMD4X2] = "DC untyped 4x2 atomic op",
> +   [HSW_DATAPORT_DC_PORT1_MEDIA_BLOCK_READ]          = "DC media block read",
> +   [HSW_DATAPORT_DC_PORT1_TYPED_SURFACE_READ]        = "DC typed surface read",
> +   [HSW_DATAPORT_DC_PORT1_TYPED_ATOMIC_OP]           = "DC typed atomic",
> +   [HSW_DATAPORT_DC_PORT1_TYPED_ATOMIC_OP_SIMD4X2]   = "DC typed 4x2 atomic op",
> +   [HSW_DATAPORT_DC_PORT1_UNTYPED_SURFACE_WRITE]     = "DC untyped surface write",
> +   [HSW_DATAPORT_DC_PORT1_MEDIA_BLOCK_WRITE]         = "DC media block write",
> +   [HSW_DATAPORT_DC_PORT1_ATOMIC_COUNTER_OP]         = "DC atomic counter op",
> +   [HSW_DATAPORT_DC_PORT1_ATOMIC_COUNTER_OP_SIMD4X2] = "DC 4x2 atomic counter op",
> +   [HSW_DATAPORT_DC_PORT1_TYPED_SURFACE_WRITE]       = "DC typed surface write",
> +};
> +
> +static const char * const aop[16] = {
> +   [BRW_AOP_AND]    = "and",
> +   [BRW_AOP_OR]     = "or",
> +   [BRW_AOP_XOR]    = "xoo",

"xor"

> +   [BRW_AOP_MOV]    = "mov",
> +   [BRW_AOP_INC]    = "inc",
> +   [BRW_AOP_DEC]    = "dec",
> +   [BRW_AOP_ADD]    = "add",
> +   [BRW_AOP_SUB]    = "sub",
> +   [BRW_AOP_REVSUB] = "revsub",
> +   [BRW_AOP_IMAX]   = "imax",
> +   [BRW_AOP_IMIN]   = "imin",
> +   [BRW_AOP_UMAX]   = "umax",
> +   [BRW_AOP_UMIN]   = "umin",
> +   [BRW_AOP_CMPWR]  = "cmpwr",
> +   [BRW_AOP_PREDEC] = "predec",
> +};
> +
>  static const char *const m_math_function[16] = {
>     [BRW_MATH_FUNCTION_INV]                            = "inv",
>     [BRW_MATH_FUNCTION_LOG]                            = "log",
> @@ -911,6 +944,38 @@ gen8_disassemble(FILE *file, struct gen8_instruction *inst, int gen)
>                  gen8_function_control(inst));
>           break;
>  
> +      case HSW_SFID_DATAPORT_DATA_CACHE_1:
> +         err |= control(file, "DP DC1 message type",
> +                        dp_dc1_msg_type, gen8_dp_message_type(inst), &space);
> +         format(file, ", Surface = %d, ", gen8_binding_table_index(inst));
> +         switch (gen8_dp_message_type(inst)) {
> +         case HSW_DATAPORT_DC_PORT1_UNTYPED_ATOMIC_OP:
> +         case HSW_DATAPORT_DC_PORT1_TYPED_ATOMIC_OP:
> +         case HSW_DATAPORT_DC_PORT1_ATOMIC_COUNTER_OP:
> +            format(file, "SIMD%d,",
> +                   (gen8_dp_message_control(inst) & (1 << 4)) ? 8 : 16);
> +            /* fallthrough */
> +         case HSW_DATAPORT_DC_PORT1_UNTYPED_ATOMIC_OP_SIMD4X2:
> +         case HSW_DATAPORT_DC_PORT1_TYPED_ATOMIC_OP_SIMD4X2:
> +         case HSW_DATAPORT_DC_PORT1_ATOMIC_COUNTER_OP_SIMD4X2:
> +            control(file, "atomic op", aop,
> +                    gen8_dp_message_control(inst) & 0xf, &space);
> +            break;
> +         case HSW_DATAPORT_DC_PORT1_UNTYPED_SURFACE_READ:
> +         case HSW_DATAPORT_DC_PORT1_UNTYPED_SURFACE_WRITE:
> +         case HSW_DATAPORT_DC_PORT1_TYPED_SURFACE_READ:
> +         case HSW_DATAPORT_DC_PORT1_TYPED_SURFACE_WRITE: {
> +            const char *simd_modes[] = { "4x2", "16", "8" };

static const char *

(otherwise the compiler will emit code to assemble the array on the
stack each time.  yay compilers!)
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