r600/eg: add support for tracing IBs after a hang.

This is a poor man's version of radeonsi ddebug stuff, this
should get hooked into that infrastructure, and grow more stuff,
but for now, just create R600_TRACE var that points to a file
that you want to dump the last IB to.

Signed-off-by: Dave Airlie <[email protected]>

1 files changed, 310 insertions, 0 deletions

diff --git a/src/gallium/drivers/r600/egd_tables.py b/src/gallium/drivers/r600/egd_tables.py
new file mode 100644
index 00000000000..4c606025ba7
--- /dev/null
+++ b/src/gallium/drivers/r600/egd_tables.py
@@ -0,0 +1,310 @@
+
+CopyRight = '''
+/*
+ * Copyright 2015 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+'''
+
+import sys
+import re
+
+
+class StringTable:
+    """
+    A class for collecting multiple strings in a single larger string that is
+    used by indexing (to avoid relocations in the resulting binary)
+    """
+    def __init__(self):
+        self.table = []
+        self.length = 0
+
+    def add(self, string):
+        # We might get lucky with string being a suffix of a previously added string
+        for te in self.table:
+            if te[0].endswith(string):
+                idx = te[1] + len(te[0]) - len(string)
+                te[2].add(idx)
+                return idx
+
+        idx = self.length
+        self.table.append((string, idx, set((idx,))))
+        self.length += len(string) + 1
+
+        return idx
+
+    def emit(self, filp, name, static=True):
+        """
+        Write
+        [static] const char name[] = "...";
+        to filp.
+        """
+        fragments = [
+            '"%s\\0" /* %s */' % (
+                te[0].encode('string_escape'),
+                ', '.join(str(idx) for idx in te[2])
+            )
+            for te in self.table
+        ]
+        filp.write('%sconst char %s[] =\n%s;\n' % (
+            'static ' if static else '',
+            name,
+            '\n'.join('\t' + fragment for fragment in fragments)
+        ))
+
+class IntTable:
+    """
+    A class for collecting multiple arrays of integers in a single big array
+    that is used by indexing (to avoid relocations in the resulting binary)
+    """
+    def __init__(self, typename):
+        self.typename = typename
+        self.table = []
+        self.idxs = set()
+
+    def add(self, array):
+        # We might get lucky and find the array somewhere in the existing data
+        try:
+            idx = 0
+            while True:
+                idx = self.table.index(array[0], idx, len(self.table) - len(array) + 1)
+
+                for i in range(1, len(array)):
+                    if array[i] != self.table[idx + i]:
+                        break
+                else:
+                    self.idxs.add(idx)
+                    return idx
+
+                idx += 1
+        except ValueError:
+            pass
+
+        idx = len(self.table)
+        self.table += array
+        self.idxs.add(idx)
+        return idx
+
+    def emit(self, filp, name, static=True):
+        """
+        Write
+        [static] const typename name[] = { ... };
+        to filp.
+        """
+        idxs = sorted(self.idxs) + [-1]
+
+        fragments = [
+            ('\t/* %s */ %s' % (
+                idxs[i],
+                ' '.join((str(elt) + ',') for elt in self.table[idxs[i]:idxs[i+1]])
+            ))
+            for i in range(len(idxs) - 1)
+        ]
+
+        filp.write('%sconst %s %s[] = {\n%s\n};\n' % (
+            'static ' if static else '',
+            self.typename, name,
+            '\n'.join(fragments)
+        ))
+
+class Field:
+    def __init__(self, reg, s_name):
+        self.s_name = s_name
+        self.name = strip_prefix(s_name)
+        self.values = []
+        self.varname_values = '%s__%s__values' % (reg.r_name.lower(), self.name.lower())
+
+class Reg:
+    def __init__(self, r_name):
+        self.r_name = r_name
+        self.name = strip_prefix(r_name)
+        self.fields = []
+        self.own_fields = True
+
+
+def strip_prefix(s):
+    '''Strip prefix in the form ._.*_, e.g. R_001234_'''
+    return s[s[2:].find('_')+3:]
+
+def parse(filename, regs, packets):
+    stream = open(filename)
+
+    for line in stream:
+        if not line.startswith('#define '):
+            continue
+
+        line = line[8:].strip()
+
+        if line.startswith('R_'):
+            name = line.split()[0]
+
+            for it in regs:
+                if it.r_name == name:
+                    reg = it
+                    break
+            else:
+                reg = Reg(name)
+                regs.append(reg)
+
+        elif line.startswith('S_'):
+            name = line[:line.find('(')]
+
+            for it in reg.fields:
+                if it.s_name == name:
+                    field = it
+                    break
+            else:
+                field = Field(reg, name)
+                reg.fields.append(field)
+
+        elif line.startswith('V_'):
+            split = line.split()
+            name = split[0]
+            value = int(split[1], 0)
+
+            for (n,v) in field.values:
+                if n == name:
+                    if v != value:
+                        sys.exit('Value mismatch: name = ' + name)
+
+            field.values.append((name, value))
+
+        elif line.startswith('PKT3_') and line.find('0x') != -1 and line.find('(') == -1:
+            packets.append(line.split()[0])
+
+    # Copy fields to indexed registers which have their fields only defined
+    # at register index 0.
+    # For example, copy fields from CB_COLOR0_INFO to CB_COLORn_INFO, n > 0.
+    match_number = re.compile('[0-9]+')
+    reg_dict = dict()
+
+    # Create a dict of registers with fields and '0' in their name
+    for reg in regs:
+        if len(reg.fields) and reg.name.find('0') != -1:
+            reg_dict[reg.name] = reg
+
+    # Assign fields
+    for reg in regs:
+        if not len(reg.fields):
+            reg0 = reg_dict.get(match_number.sub('0', reg.name))
+            if reg0 != None:
+                reg.fields = reg0.fields
+                reg.fields_owner = reg0
+                reg.own_fields = False
+
+
+def write_tables(regs, packets):
+
+    strings = StringTable()
+    strings_offsets = IntTable("int")
+
+    print '/* This file is autogenerated by egd_tables.py from evergreend.h. Do not edit directly. */'
+    print
+    print CopyRight.strip()
+    print '''
+#ifndef EG_TABLES_H
+#define EG_TABLES_H
+
+struct eg_field {
+        unsigned name_offset;
+        unsigned mask;
+        unsigned num_values;
+        unsigned values_offset; /* offset into eg_strings_offsets */
+};
+
+struct eg_reg {
+        unsigned name_offset;
+        unsigned offset;
+        unsigned num_fields;
+        unsigned fields_offset;
+};
+
+struct eg_packet3 {
+        unsigned name_offset;
+        unsigned op;
+};
+'''
+
+    print 'static const struct eg_packet3 packet3_table[] = {'
+    for pkt in packets:
+        print '\t{%s, %s},' % (strings.add(pkt[5:]), pkt)
+    print '};'
+    print
+
+    print 'static const struct eg_field egd_fields_table[] = {'
+
+    fields_idx = 0
+    for reg in regs:
+        if len(reg.fields) and reg.own_fields:
+            print '\t/* %s */' % (fields_idx)
+
+            reg.fields_idx = fields_idx
+
+            for field in reg.fields:
+                if len(field.values):
+                    values_offsets = []
+                    for value in field.values:
+                        while value[1] >= len(values_offsets):
+                            values_offsets.append(-1)
+                        values_offsets[value[1]] = strings.add(strip_prefix(value[0]))
+                    print '\t{%s, %s(~0u), %s, %s},' % (
+                        strings.add(field.name), field.s_name,
+                        len(values_offsets), strings_offsets.add(values_offsets))
+                else:
+                    print '\t{%s, %s(~0u)},' % (strings.add(field.name), field.s_name)
+                fields_idx += 1
+
+    print '};'
+    print
+
+    print 'static const struct eg_reg egd_reg_table[] = {'
+    for reg in regs:
+        if len(reg.fields):
+            print '\t{%s, %s, %s, %s},' % (strings.add(reg.name), reg.r_name,
+                len(reg.fields), reg.fields_idx if reg.own_fields else reg.fields_owner.fields_idx)
+        else:
+            print '\t{%s, %s},' % (strings.add(reg.name), reg.r_name)
+    print '};'
+    print
+
+    strings.emit(sys.stdout, "egd_strings")
+
+    print
+
+    strings_offsets.emit(sys.stdout, "egd_strings_offsets")
+
+    print
+    print '#endif'
+
+
+def main():
+    regs = []
+    packets = []
+    for arg in sys.argv[1:]:
+        parse(arg, regs, packets)
+    write_tables(regs, packets)
+
+
+if __name__ == '__main__':
+    main()
+
+# kate: space-indent on; indent-width 4; replace-tabs on;