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/*
* $Id: misc_pci_control.c,v 1.12 2010-04-06 11:28:02 potyra Exp $
*
* Copyright (C) 2003-2010 FAUmachine Team <info@faumachine.org>.
* This program is free software. You can redistribute it and/or modify it
* under the terms of the GNU General Public License, either version 2 of
* the License, or (at your option) any later version. See COPYING.
*/
#include "config.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include "misc_pci_control.h"
#define COMP_(x) misc_pci_control_ ## x
struct cpssp {
struct sig_std_logic *port_reg_out_xx0_0;
struct sig_std_logic *port_reg_out_xx0_1;
struct sig_std_logic *port_reg_out_xx0_2;
struct sig_std_logic *port_reg_out_xx0_3;
struct sig_std_logic *port_reg_out_xx0_4;
struct sig_std_logic *port_reg_out_xx0_5;
struct sig_std_logic *port_reg_out_xx0_6;
struct sig_std_logic *port_reg_out_xx0_7;
struct sig_std_logic *port_reg_out_xx1_0;
struct sig_std_logic *port_reg_out_xx1_1;
struct sig_std_logic *port_reg_out_xx1_2;
struct sig_std_logic *port_reg_out_xx1_3;
struct sig_std_logic *port_reg_out_xx1_4;
struct sig_std_logic *port_reg_out_xx1_5;
struct sig_std_logic *port_reg_out_xx1_6;
struct sig_std_logic *port_reg_out_xx1_7;
struct sig_pci_bus *port_pci;
uint32_t state_conf_addr;
unsigned char state_conf_status_io;
unsigned char state_io_reg_xx0;
unsigned char state_io_reg_xx1;
};
/* check if our io address is used.
* @return -1 if io is disabled or out of range,
* otherwise the local address part is returned.
*/
static int
COMP_(pci_check_io_addr)(struct cpssp *cpssp, uint32_t addr)
{
if (! cpssp->state_conf_status_io) {
return -1;
}
if ((addr & (~0xF)) != cpssp->state_conf_addr) {
return -1;
}
return addr & 0xF;
}
static int
COMP_(pci_ior)(void *_cpssp, uint32_t addr, unsigned int bs, uint32_t *valp)
{
struct cpssp *cpssp = (struct cpssp *)_cpssp;
int local_addr;
local_addr = COMP_(pci_check_io_addr)(cpssp, addr);
switch (local_addr) {
case -1:
return -1;
case 0:
*valp = cpssp->state_io_reg_xx0
| cpssp->state_io_reg_xx1 << 8;
/* fall through */
default:
return 0;
}
/* not reached */
return 0;
}
static int
COMP_(bool_2_std)(int bv)
{
return bv ? SIG_STD_LOGIC_1 : SIG_STD_LOGIC_0;
}
static void
COMP_(update_reg_out)(struct cpssp *cpssp)
{
sig_std_logic_set(cpssp->port_reg_out_xx0_0, cpssp,
COMP_(bool_2_std)(cpssp->state_io_reg_xx0 & 1 << 0));
sig_std_logic_set(cpssp->port_reg_out_xx0_1, cpssp,
COMP_(bool_2_std)(cpssp->state_io_reg_xx0 & 1 << 1));
sig_std_logic_set(cpssp->port_reg_out_xx0_2, cpssp,
COMP_(bool_2_std)(cpssp->state_io_reg_xx0 & 1 << 2));
sig_std_logic_set(cpssp->port_reg_out_xx0_3, cpssp,
COMP_(bool_2_std)(cpssp->state_io_reg_xx0 & 1 << 3));
sig_std_logic_set(cpssp->port_reg_out_xx0_4, cpssp,
COMP_(bool_2_std)(cpssp->state_io_reg_xx0 & 1 << 4));
sig_std_logic_set(cpssp->port_reg_out_xx0_5, cpssp,
COMP_(bool_2_std)(cpssp->state_io_reg_xx0 & 1 << 5));
sig_std_logic_set(cpssp->port_reg_out_xx0_6, cpssp,
COMP_(bool_2_std)(cpssp->state_io_reg_xx0 & 1 << 6));
sig_std_logic_set(cpssp->port_reg_out_xx0_7, cpssp,
COMP_(bool_2_std)(cpssp->state_io_reg_xx0 & 1 << 7));
sig_std_logic_set(cpssp->port_reg_out_xx1_0, cpssp,
COMP_(bool_2_std)(cpssp->state_io_reg_xx1 & 1 << 0));
sig_std_logic_set(cpssp->port_reg_out_xx1_1, cpssp,
COMP_(bool_2_std)(cpssp->state_io_reg_xx1 & 1 << 1));
sig_std_logic_set(cpssp->port_reg_out_xx1_2, cpssp,
COMP_(bool_2_std)(cpssp->state_io_reg_xx1 & 1 << 2));
sig_std_logic_set(cpssp->port_reg_out_xx1_3, cpssp,
COMP_(bool_2_std)(cpssp->state_io_reg_xx1 & 1 << 3));
sig_std_logic_set(cpssp->port_reg_out_xx1_4, cpssp,
COMP_(bool_2_std)(cpssp->state_io_reg_xx1 & 1 << 4));
sig_std_logic_set(cpssp->port_reg_out_xx1_5, cpssp,
COMP_(bool_2_std)(cpssp->state_io_reg_xx1 & 1 << 5));
sig_std_logic_set(cpssp->port_reg_out_xx1_6, cpssp,
COMP_(bool_2_std)(cpssp->state_io_reg_xx1 & 1 << 6));
sig_std_logic_set(cpssp->port_reg_out_xx1_7, cpssp,
COMP_(bool_2_std)(cpssp->state_io_reg_xx1 & 1 << 7));
}
static int
COMP_(pci_iow)(void *_cpssp, uint32_t addr, unsigned int bs, uint32_t val)
{
struct cpssp *cpssp = (struct cpssp *)_cpssp;
int local_addr;
local_addr = COMP_(pci_check_io_addr)(cpssp, addr);
switch (local_addr) {
case -1:
return -1;
case 0:
if ((bs & 1) == 1) {
cpssp->state_io_reg_xx0 = val & 0xff;
}
if ((bs & 2) == 2) {
cpssp->state_io_reg_xx1 = (val >> 8) & 0xff;
}
COMP_(update_reg_out)(cpssp);
/* fall through */
default:
return 0;
}
/* not reached */
return 0;
}
static int
COMP_(pci_c0r)(void *_cpssp, uint32_t addr, unsigned int bs, uint32_t *valp)
{
struct cpssp *cpssp = (struct cpssp *)_cpssp;
if ((addr & 3) != 0) {
return -1;
}
switch (addr & 0xff) {
case 0x0:
*valp = 0xdeadbeaf;
break;
case 0x4:
*valp = cpssp->state_conf_status_io || 1 << 25;
break;
case 0x8:
*valp = 1 << 16 | 1 << 26;
break;
case 0x0c:
*valp = 0;
break;
case 0x10:
*valp = cpssp->state_conf_addr | 1 << 0;
break;
default:
*valp = 0;
break;
}
return 0;
}
static int
COMP_(pci_c0w)(void *_cpssp, uint32_t addr, unsigned int bs, uint32_t val)
{
struct cpssp *cpssp = (struct cpssp *)_cpssp;
if ((addr & 3) != 0) {
return -1;
}
switch (addr & 0xff) {
case 0x04:
if (bs & 1) {
cpssp->state_conf_status_io = val & 1;
}
break;
case 0x10:
/* bits 0-3 are hardwired */
val &= ~0xf;
if (bs & 1) {
cpssp->state_conf_addr &= ~0xff;
cpssp->state_conf_addr |= val & 0xff;
}
if (bs & 2) {
cpssp->state_conf_addr &= ~0xff00;
cpssp->state_conf_addr |= val & 0xff00;
}
if (bs & 4) {
cpssp->state_conf_addr &= ~0xff0000;
cpssp->state_conf_addr |= val & 0xff0000;
}
if (bs & 8) {
cpssp->state_conf_addr &= ~0xff000000;
cpssp->state_conf_addr |= val & 0xff000000;
}
break;
default:
break;
}
return 0;
}
static void
COMP_(pci_reset_n_set)(void *_cpssp, unsigned int val)
{
struct cpssp *cpssp = (struct cpssp *)_cpssp;
if (! val) {
cpssp->state_conf_addr = 0;
cpssp->state_conf_status_io = 0;
cpssp->state_io_reg_xx0 = 0;
cpssp->state_io_reg_xx1 = 0;
COMP_(update_reg_out)(cpssp);
}
}
void *
COMP_(create)(
const char *name,
struct sig_manage *manage,
struct sig_pci_bus *port_pci,
struct sig_std_logic *port_reg_out_xx0_0,
struct sig_std_logic *port_reg_out_xx0_1,
struct sig_std_logic *port_reg_out_xx0_2,
struct sig_std_logic *port_reg_out_xx0_3,
struct sig_std_logic *port_reg_out_xx0_4,
struct sig_std_logic *port_reg_out_xx0_5,
struct sig_std_logic *port_reg_out_xx0_6,
struct sig_std_logic *port_reg_out_xx0_7,
struct sig_std_logic *port_reg_out_xx1_0,
struct sig_std_logic *port_reg_out_xx1_1,
struct sig_std_logic *port_reg_out_xx1_2,
struct sig_std_logic *port_reg_out_xx1_3,
struct sig_std_logic *port_reg_out_xx1_4,
struct sig_std_logic *port_reg_out_xx1_5,
struct sig_std_logic *port_reg_out_xx1_6,
struct sig_std_logic *port_reg_out_xx1_7
)
{
static const struct sig_pci_bus_main_funcs pci_main_funcs = {
.ior = COMP_(pci_ior),
.iow = COMP_(pci_iow)
};
static const struct sig_pci_bus_idsel_funcs pci_idsel_funcs = {
.c0r = COMP_(pci_c0r),
.c0w = COMP_(pci_c0w)
};
static const struct sig_boolean_funcs pci_n_reset_funcs = {
.set = COMP_(pci_reset_n_set)
};
struct cpssp *cpssp;
cpssp = malloc(sizeof(*cpssp));
assert(cpssp);
/* Call */
/* Out */
cpssp->port_pci = port_pci;
cpssp->port_reg_out_xx0_0 = port_reg_out_xx0_0;
sig_std_logic_connect_out(port_reg_out_xx0_0, cpssp, 0);
cpssp->port_reg_out_xx0_1 = port_reg_out_xx0_1;
sig_std_logic_connect_out(port_reg_out_xx0_1, cpssp, 0);
cpssp->port_reg_out_xx0_2 = port_reg_out_xx0_2;
sig_std_logic_connect_out(port_reg_out_xx0_2, cpssp, 0);
cpssp->port_reg_out_xx0_3 = port_reg_out_xx0_3;
sig_std_logic_connect_out(port_reg_out_xx0_3, cpssp, 0);
cpssp->port_reg_out_xx0_4 = port_reg_out_xx0_4;
sig_std_logic_connect_out(port_reg_out_xx0_4, cpssp, 0);
cpssp->port_reg_out_xx0_5 = port_reg_out_xx0_5;
sig_std_logic_connect_out(port_reg_out_xx0_5, cpssp, 0);
cpssp->port_reg_out_xx0_6 = port_reg_out_xx0_6;
sig_std_logic_connect_out(port_reg_out_xx0_6, cpssp, 0);
cpssp->port_reg_out_xx0_7 = port_reg_out_xx0_7;
sig_std_logic_connect_out(port_reg_out_xx0_7, cpssp, 0);
cpssp->port_reg_out_xx1_0 = port_reg_out_xx1_0;
sig_std_logic_connect_out(port_reg_out_xx1_0, cpssp, 0);
cpssp->port_reg_out_xx1_1 = port_reg_out_xx1_1;
sig_std_logic_connect_out(port_reg_out_xx1_1, cpssp, 0);
cpssp->port_reg_out_xx1_2 = port_reg_out_xx1_2;
sig_std_logic_connect_out(port_reg_out_xx1_2, cpssp, 0);
cpssp->port_reg_out_xx1_3 = port_reg_out_xx1_3;
sig_std_logic_connect_out(port_reg_out_xx1_3, cpssp, 0);
cpssp->port_reg_out_xx1_4 = port_reg_out_xx1_4;
sig_std_logic_connect_out(port_reg_out_xx1_4, cpssp, 0);
cpssp->port_reg_out_xx1_5 = port_reg_out_xx1_5;
sig_std_logic_connect_out(port_reg_out_xx1_5, cpssp, 0);
cpssp->port_reg_out_xx1_6 = port_reg_out_xx1_6;
sig_std_logic_connect_out(port_reg_out_xx1_6, cpssp, 0);
cpssp->port_reg_out_xx1_7 = port_reg_out_xx1_7;
sig_std_logic_connect_out(port_reg_out_xx1_7, cpssp, 0);
/* In */
cpssp->state_conf_addr = 0;
cpssp->state_conf_status_io = 0;
cpssp->state_io_reg_xx0 = 0;
cpssp->state_io_reg_xx1 = 0;
sig_pci_bus_main_connect(port_pci->main, cpssp, &pci_main_funcs);
sig_pci_bus_idsel_connect(port_pci->idsel, cpssp, &pci_idsel_funcs);
sig_boolean_connect_in(port_pci->n_reset, cpssp, &pci_n_reset_funcs);
return cpssp;
}
void
COMP_(destroy)(void *_cpssp)
{
struct cpssp *cpssp = _cpssp;
/* FIXME */
free(cpssp);
}
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