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nouveau/headers: Generate Rust for QMDs

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This also involves adding array support to the struct parser.
Fortunately, the header files for QMDs are really consistent here and we
can make lots of assumptions like that i is always the index variable.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28756>
This commit is contained in:
Faith Ekstrand 2024-04-10 14:40:36 -05:00 • committed by Marge Bot
parent 20c1a69125
commit 64f02ac16d
2 changed files with 40 additions and 3 deletions
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11
src/nouveau/headers/meson.build
View file

@ -79,6 +79,17 @@ if with_nouveau_vk
depend_files: nvk_cl_header_depend_files,
)
fs = import('fs')
if cl.endswith('c0') and fs.is_file('nvidia/classes/'+cl+'qmd.h')
cl_rs_generated += custom_target(
'nvh_classes_' + cl + '_qmd.rs',
input : ['struct_parser.py', 'nvidia/classes/'+cl+'qmd.h'],
output : ['nvh_classes_'+cl+'_qmd.rs'],
command : [prog_python, '@INPUT0@', '--in-h', '@INPUT1@',
'--out-rs', '@OUTPUT0@']
)
endif
if cl.endswith('97')
cl_rs_generated += custom_target(
'nvh_classes_' + cl + '_tex.rs',

32
src/nouveau/headers/struct_parser.py
View file

@ -17,11 +17,20 @@ TEMPLATE_RS = Template("""\
// This file is generated by struct_parser.py. DO NOT EDIT!
#![allow(non_snake_case)]
use std::ops::Range;
% for s in structs:
% for f in s.fields:
% if f.stride:
#[inline]
pub fn ${s.name}_${f.name}(i: usize) -> Range<usize> {
(i * ${f.stride} + ${f.lo})..(i * ${f.stride} + ${f.hi + 1})
}
% else:
pub const ${s.name}_${f.name}: Range<usize> = ${f.lo}..${f.hi + 1};
% endif:
% for e in f.enums:
pub const ${s.name}_${f.name}_${e.name}: u32 = ${e.value};
% endfor
@ -38,15 +47,24 @@ STRUCTS = [
# This one goes last because it's a substring of the others
'TEXHEAD',
'TEXSAMP',
'QMDV00_06',
'QMDV01_06',
'QMDV01_07',
'QMDV02_01',
'QMDV02_02',
'QMDV02_03',
'QMDV02_04',
'QMDV03_00',
]
Enum = namedtuple('Enum', ['name', 'value'])
class Field(object):
def __init__(self, name, lo, hi):
def __init__(self, name, lo, hi, stride=0):
self.name = name
self.lo = lo
self.hi = hi
self.stride = stride
self.enums = []
def add_enum(self, name, value):
@ -57,12 +75,13 @@ class Struct(object):
self.name = name
self.fields = []
def add_field(self, name, lo, hi):
self.fields.append(Field(name, lo, hi))
def add_field(self, name, lo, hi, stride=0):
self.fields.append(Field(name, lo, hi, stride))
DRF_RE = re.compile(r'(?P<hi>[0-9]+):(?P<lo>[0-9]+)')
FIELD_NAME_RE = re.compile(r'_?(?P<dw>[0-9]+)?_?(?P<name>.*)')
MW_RE = re.compile(r'MW\((?P<hi>[0-9]+):(?P<lo>[0-9]+)\)')
MW_ARR_RE = re.compile(r'MW\(\((?P<hi>\d+)\+\(i\)\*(?P<stride>\d+)\):\((?P<lo>[0-9]+)\+\(i\)\*(?P=stride)\)\)')
def parse_header(nvcl, file):
structs = {}
@ -96,6 +115,7 @@ def parse_header(nvcl, file):
drf = DRF_RE.match(line[2])
mw = MW_RE.match(line[2])
mw_arr = MW_ARR_RE.match(line[2])
if drf:
dw = int(name_m.group('dw'))
lo = int(drf.group('lo')) + dw * 32
@ -105,6 +125,12 @@ def parse_header(nvcl, file):
lo = int(mw.group('lo'))
hi = int(mw.group('hi'))
struct.add_field(name, lo, hi)
elif mw_arr:
lo = int(mw_arr.group('lo'))
hi = int(mw_arr.group('hi'))
stride = int(mw_arr.group('stride'))
assert name.endswith('(i)')
struct.add_field(name.removesuffix('(i)'), lo, hi, stride)
else:
for f in struct.fields:
if name.startswith(f.name + '_'):