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pan/midgard: Disassemble barrier instructions

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We don't need to print all the usual texture noise; just the relevant
fields and the rest can be guarded to zero.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3580>
This commit is contained in:
Alyssa Rosenzweig 2020-01-23 21:17:07 -05:00 • committed by Marge Bot
parent 556964d927
commit c9f4eface3
2 changed files with 60 additions and 3 deletions
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35
src/panfrost/midgard/disassemble.c
View file

@ -1283,6 +1283,35 @@ sampler_type_name(enum mali_sampler_type t)
}
static void
print_texture_barrier(FILE *fp, uint32_t *word)
{
midgard_texture_barrier_word *barrier = (midgard_texture_barrier_word *) word;
if (!barrier->cont)
fprintf(fp, "/* cont missing? */");
if (!barrier->last)
fprintf(fp, "/* last missing? */");
if (barrier->zero1)
fprintf(fp, "/* zero1 = 0x%X */ ", barrier->zero1);
if (barrier->zero2)
fprintf(fp, "/* zero2 = 0x%X */ ", barrier->zero2);
if (barrier->zero3)
fprintf(fp, "/* zero3 = 0x%X */ ", barrier->zero3);
if (barrier->zero4)
fprintf(fp, "/* zero4 = 0x%X */ ", barrier->zero4);
if (barrier->zero5)
fprintf(fp, "/* zero4 = 0x%" PRIx64 " */ ", barrier->zero5);
fprintf(fp, " 0x%X\n", barrier->unknown4);
}
#undef DEFINE_CASE
static void
@ -1296,6 +1325,12 @@ print_texture_word(FILE *fp, uint32_t *word, unsigned tabs, unsigned in_reg_base
/* Broad category of texture operation in question */
print_texture_op(fp, texture->op, texture->is_gather);
/* Barriers use a dramatically different code path */
if (texture->op == TEXTURE_OP_BARRIER) {
print_texture_barrier(fp, word);
return;
}
/* Specific format in question */
print_texture_format(fp, texture->format);

28
src/panfrost/midgard/midgard.h
View file

@ -745,9 +745,31 @@ __attribute__((__packed__))
}
midgard_texture_word;
/* Up to 16 constant bytes can be embedded in a bundle. This union describes
* all possible layouts.
*/
/* Technically barriers are texture instructions but it's less work to add them
* as an explicitly zeroed special case, since most fields are forced to go to
* zero */
typedef struct
__attribute__((__packed__))
{
unsigned type : 4;
unsigned next_type : 4;
/* op = TEXTURE_OP_BARRIER */
unsigned op : 6;
unsigned zero1 : 2;
/* Since helper invocations don't make any sense, these are forced to one */
unsigned cont : 1;
unsigned last : 1;
unsigned zero2 : 14;
unsigned zero3 : 24;
unsigned unknown4 : 1;
unsigned zero4 : 7;
uint64_t zero5;
} midgard_texture_barrier_word;
typedef union midgard_constants {
double f64[2];