#!/usr/bin/perl -w
# SPDX-License-Identifier: GPL-2.0-only OR BSD-3-Clause
# Copyright (C) 2019--2020 Intel Corporation
use Getopt::Long qw(:config no_ignore_case);
use File::Basename;
my $ccsregs = "ccs-regs.asc";
my $header;
my $regarray;
my $limitc;
my $limith;
my $kernel;
my $help;
GetOptions("ccsregs|c=s" => \$ccsregs,
"header|e=s" => \$header,
"regarray|r=s" => \$regarray,
"limitc|l=s" => \$limitc,
"limith|L=s" => \$limith,
"kernel|k" => \$kernel,
"help|h" => \$help) or die "can't parse options";
$help = 1 if ! defined $header || ! defined $limitc || ! defined $limith;
if (defined $help) {
print <<EOH
$0 - Create CCS register definitions for C
usage: $0 -c ccs-regs.asc -e header -r regarray -l limit-c -L limit-header [-k]
-c ccs register file
-e header file name
-r register description array file name
-l limit and capability array file name
-L limit and capability header file name
-k generate files for kernel space consumption
EOH
;
exit 0;
}
my $lh_hdr = ! defined $kernel
? '#include "ccs-os.h"' . "\n"
: "#include <linux/bits.h>\n#include <linux/types.h>\n";
my $uint32_t = ! defined $kernel ? 'uint32_t' : 'u32';
my $uint16_t = ! defined $kernel ? 'uint16_t' : 'u16';
open(my $R, "< $ccsregs") or die "can't open $ccsregs";
open(my $H, "> $header") or die "can't open $header";
my $A;
if (defined $regarray) {
open($A, "> $regarray") or die "can't open $regarray";
}
open(my $LC, "> $limitc") or die "can't open $limitc";
open(my $LH, "> $limith") or die "can't open $limith";
my %this;
sub is_limit_reg($) {
my $addr = hex $_[0];
return 0 if $addr < 0x40; # weed out status registers
return 0 if $addr >= 0x100 && $addr < 0xfff; # weed out configuration registers
return 1;
}
my $uc_header = basename uc $header;
$uc_header =~ s/[^A-Z0-9]/_/g;
my $copyright = "/* Copyright (C) 2019--2020 Intel Corporation */\n";
my $license = "SPDX-License-Identifier: GPL-2.0-only OR BSD-3-Clause";
my $note = "/*\n * Generated by $0;\n * do not modify.\n */\n";
for my $fh ($A, $LC) {
print $fh "// $license\n$copyright$note\n" if defined $fh;
}
for my $fh ($H, $LH) {
print $fh "/* $license */\n$copyright$note\n";
}
print $H <<EOF
#ifndef __${uc_header}__
#define __${uc_header}__
EOF
;
print $H <<EOF
#include <linux/bits.h>
#include <media/v4l2-cci.h>
EOF
if defined $kernel;
print $H "#define CCS_FL_BASE " .
(defined $kernel ? "CCI_REG_PRIVATE_SHIFT" : 16) . "\n";
my $flag = -1;
my $all_flags;
sub bit_def($) {
my $bit = shift @_;
if (defined $kernel) {
return "BIT$bit" if $bit =~ /^\(.*\)$/;
return "BIT($bit)";
}
return "(1U << $bit)";
}
sub flag_str($$) {
my ($flag, $check) = @_;
$$flag++;
my $flag_str = !$$flag ? "CCS_FL_BASE" : "(CCS_FL_BASE + $$flag)";
$flag_str = bit_def($flag_str);
$$check .= " | " if defined $$check;
$$check .= $flag_str;
return $flag_str;
}
if (! defined $kernel) {
print $H "#define CCS_FL_16BIT " . flag_str(\$flag, \$all_flags) . "\n";
print $H "#define CCS_FL_32BIT " . flag_str(\$flag, \$all_flags) . "\n";
}
print $H "#define CCS_FL_FLOAT_IREAL " . flag_str(\$flag, \$all_flags) . "\n";
print $H "#define CCS_FL_IREAL " . flag_str(\$flag, \$all_flags) . "\n";
print $H "#define CCS_BUILD_BUG \\
BUILD_BUG_ON(~CCI_REG_PRIVATE_MASK & ($all_flags))\n"
if defined $kernel;
print $H <<EOF
#define CCS_R_ADDR(r) ((r) & 0xffff)
EOF
if ! defined $kernel;
print $A <<EOF
#include <stdint.h>
#include <stdio.h>
#include "ccs-extra.h"
#include "ccs-regs.h"
EOF
if defined $A;
my $uc_limith = basename uc $limith;
$uc_limith =~ s/[^A-Z0-9]/_/g;
print $LH <<EOF
#ifndef __${uc_limith}__
#define __${uc_limith}__
$lh_hdr
struct ccs_limit {
$uint32_t reg;
$uint16_t size;
$uint16_t flags;
const char *name;
};
EOF
;
print $LH "#define CCS_L_FL_SAME_REG " . bit_def(0) . "\n\n";
print $LH <<EOF
extern const struct ccs_limit ccs_limits[];
EOF
;
print $LC <<EOF
#include "ccs-limits.h"
#include "ccs-regs.h"
const struct ccs_limit ccs_limits[] = {
EOF
;
my $limitcount = 0;
my $argdescs;
my $reglist = "const struct ccs_reg_desc ccs_reg_desc[] = {\n";
sub name_split($$) {
my ($name, $addr) = @_;
my $args;
$name =~ /([^\(]+?)(\(.*)/;
($name, $args) = ($1, $2);
$args = [split /,\s*/, $args];
foreach my $t (@$args) {
$t =~ s/[\(\)]//g;
$t =~ s/\//\\\//g;
}
return ($name, $addr, $args);
}
sub tabconv($) {
$_ = shift;
my @l = split "\n", $_;
map {
s/ {8,8}/\t/g;
s/\t\K +//;
} @l;
return (join "\n", @l) . "\n";
}
sub elem_bits(@) {
my @flags = @_;
return 16 if grep /^16$/, @flags;
return 32 if grep /^32$/, @flags;
return 8;
}
sub arr_size($) {
my $this = $_[0];
my $size = $this->{elsize};
my $h = $this->{argparams};
foreach my $arg (@{$this->{args}}) {
my $apref = $h->{$arg};
$size *= $apref->{max} - $apref->{min} + 1;
}
return $size;
}
sub print_args($$$) {
my ($this, $postfix, $is_same_reg) = @_;
my ($args, $argparams, $name) =
($this->{args}, $this->{argparams}, $this->{name});
my $varname = "ccs_reg_arg_" . (lc $name) . $postfix;
my @mins;
my @sorted_args = @{$this->{sorted_args}};
my $lim_arg;
my $size = arr_size($this);
$argdescs .= "static const struct ccs_reg_arg " . $varname . "[] = {\n";
foreach my $sorted_arg (@sorted_args) {
push @mins, $argparams->{$sorted_arg}->{min};
}
foreach my $sorted_arg (@sorted_args) {
my $h = $argparams->{$sorted_arg};
$argdescs .= "\t{ \"$sorted_arg\", $h->{min}, $h->{max}, $h->{elsize} },\n";
$lim_arg .= defined $lim_arg ? ", $h->{min}" : "$h->{min}";
}
$argdescs .= "};\n\n";
$reglist .= "\t{ CCS_R_" . (uc $name) . "(" . (join ",", (@mins)) .
"), $size, sizeof($varname) / sizeof(*$varname)," .
" \"" . (lc $name) . "\", $varname },\n";
print $LC tabconv sprintf "\t{ CCS_R_" . (uc $name) . "($lim_arg), " .
$size . ", " . ($is_same_reg ? "CCS_L_FL_SAME_REG" : "0") .
", \"$name" . (defined $this->{discontig} ? " $lim_arg" : "") . "\" },\n"
if is_limit_reg $this->{base_addr};
}
my $hdr_data;
while (<$R>) {
chop;
s/^\s*//;
next if /^[#;]/ || /^$/;
if (s/^-\s*//) {
if (s/^b\s*//) {
my ($bit, $addr) = split /\t+/;
$bit = uc $bit;
$hdr_data .= sprintf "#define %-62s %s", "CCS_" . (uc ${this{name}}) ."_$bit", bit_def($addr) . "\n";
} elsif (s/^f\s*//) {
s/[,\.-]/_/g;
my @a = split /\s+/;
my ($msb, $lsb, $this_field) = reverse @a;
@a = ( { "name" => "SHIFT", "addr" => $lsb, "fmt" => "%uU", },
{ "name" => "MASK", "addr" => (1 << ($msb + 1)) - 1 - ((1 << $lsb) - 1), "fmt" => "0x%" . join(".", ($this{"elsize"} >> 2) x 2) . "x" } );
$this{"field"} = $this_field;
foreach my $ar (@a) {
#print $ar->{fmt}."\n";
$hdr_data .= sprintf "#define %-62s " . $ar->{"fmt"} . "\n", "CCS_" . (uc $this{"name"}) . (defined $this_field ? "_" . uc $this_field : "") . "_" . $ar->{"name"}, $ar->{"addr"} . "\n";
}
} elsif (s/^e\s*//) {
s/[,\.-]/_/g;
my ($enum, $addr) = split /\s+/;
$enum = uc $enum;
$hdr_data .= sprintf "#define %-62s %s", "CCS_" . (uc ${this{name}}) . (defined $this{"field"} ? "_" . uc $this{"field"} : "") ."_$enum", $addr . ($addr =~ /0x/i ? "" : "U") . "\n";
} elsif (s/^l\s*//) {
my ($arg, $min, $max, $elsize, @discontig) = split /\s+/;
my $size;
foreach my $num ($min, $max) {
$num = hex $num if $num =~ /0x/i;
}
$hdr_data .= sprintf "#define %-62s %s", "CCS_LIM_" . (uc ${this{name}} . "_MIN_$arg"), $min . ($min =~ /0x/i ? "" : "U") . "\n";
$hdr_data .= sprintf "#define %-62s %s", "CCS_LIM_" . (uc ${this{name}} . "_MAX_$arg"), $max . ($max =~ /0x/i ? "" : "U") . "\n";
my $h = $this{argparams};
$h->{$arg} = { "min" => $min,
"max" => $max,
"elsize" => $elsize =~ /^0x/ ? hex $elsize : $elsize,
"discontig" => \@discontig };
$this{discontig} = $arg if @discontig;
next if $#{$this{args}} + 1 != scalar keys %{$this{argparams}};
my $reg_formula = "$this{addr}";
my $lim_formula;
chop $reg_formula;
$reg_formula = "(" . $reg_formula if $this{flagstring} ne "";
foreach my $arg (@{$this{args}}) {
my $d = $h->{$arg}->{discontig};
my $times = $h->{$arg}->{elsize} != 1 ?
" * " . $h->{$arg}->{elsize} : "";
if (@$d) {
my ($lim, $offset) = split /,/, $d->[0];
$reg_formula .= " + (($arg) < $lim ? ($arg)$times : $offset + (($arg) - $lim)$times)";
} else {
$reg_formula .= " + ($arg)$times";
}
$lim_formula .= (defined $lim_formula ? " + " : "") . "($arg)$times";
}
$reg_formula .= ")";
$lim_formula =~ s/^\(([a-z0-9]+)\)$/$1/i;
print $H tabconv sprintf("#define %-62s %s", "CCS_R_" . (uc $this{name}) .
$this{arglist}, $reg_formula .
(($this{flagstring} eq "") ? "" :
" | " . $this{flagstring} . ")") . "\n");
print $H tabconv $hdr_data;
undef $hdr_data;
# Sort arguments in descending order by size
@{$this{sorted_args}} = sort {
$h->{$a}->{elsize} <= $h->{$b}->{elsize}
} @{$this{args}};
if (defined $this{discontig}) {
my $da = $this{argparams}->{$this{discontig}};
my ($first_discontig) = split /,/, $da->{discontig}->[0];
my $max = $da->{max};
$da->{max} = $first_discontig - 1;
print_args(\%this, "", 0);
$da->{min} = $da->{max} + 1;
$da->{max} = $max;
print_args(\%this, $first_discontig, 1);
} else {
print_args(\%this, "", 0);
}
next unless is_limit_reg $this{base_addr};
print $LH tabconv sprintf "#define %-63s%s\n",
"CCS_L_" . (uc $this{name}) . "_OFFSET(" .
(join ", ", @{$this{args}}) . ")", "($lim_formula)";
}
if (! @{$this{args}}) {
print $H tabconv($hdr_data);
undef $hdr_data;
}
next;
}
my ($name, $addr, @flags) = split /\t+/, $_;
my $args = [];
my $sp;
($name, $addr, $args) = name_split($name, $addr) if /\(.*\)/;
$name =~ s/[,\.-]/_/g;
my $flagstring = "";
my $bits = elem_bits(@flags);
if (! defined $kernel) {
$flagstring .= "| CCS_FL_16BIT " if $bits == 16;
$flagstring .= "| CCS_FL_32BIT " if $bits == 32;
}
$flagstring .= "| CCS_FL_FLOAT_IREAL " if grep /^float_ireal$/, @flags;
$flagstring .= "| CCS_FL_IREAL " if grep /^ireal$/, @flags;
$flagstring =~ s/^\| //;
$flagstring =~ s/ $//;
$flagstring = "($flagstring)" if $flagstring =~ /\|/;
my $base_addr = $addr;
$addr = "CCI_REG$bits($addr)" if defined $kernel;
if ($flagstring ne "" && !@$args) {
$addr = "($addr | $flagstring)";
$flagstring = "";
}
my $arglist = @$args ? "(" . (join ", ", @$args) . ")" : "";
$hdr_data .= sprintf "#define %-62s %s\n", "CCS_R_" . (uc $name), $addr
if !@$args;
$name =~ s/\(.*//;
%this = ( name => $name,
addr => $addr,
flagstring => $flagstring,
base_addr => $base_addr,
argparams => {},
args => $args,
arglist => $arglist,
elsize => $bits / 8,
);
if (!@$args) {
$reglist .= "\t{ CCS_R_" . (uc $name) . ", 1, 0, \"" . (lc $name) . "\", NULL },\n";
print $H tabconv $hdr_data;
undef $hdr_data;
print $LC tabconv sprintf "\t{ CCS_R_" . (uc $name) . ", " .
$this{elsize} . ", 0, \"$name\" },\n"
if is_limit_reg $this{base_addr};
}
print $LH tabconv sprintf "#define %-63s%s\n",
"CCS_L_" . (uc $this{name}), $limitcount++
if is_limit_reg $this{base_addr};
}
if (defined $A) {
print $A $argdescs, $reglist;
print $A "\t{ 0 }\n";
print $A "};\n";
}
print $H "\n#endif /* __${uc_header}__ */\n";
print $LH tabconv sprintf "#define %-63s%s\n", "CCS_L_LAST", $limitcount;
print $LH "\n#endif /* __${uc_limith}__ */\n";
print $LC "\t{ 0 } /* Guardian */\n";
print $LC "};\n";
close($R);
close($H);
close($A) if defined $A;
close($LC);
close($LH);
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