src/superio/via/vt1211/vt1211.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2004 Nick Barker <nick.barker9@btinternet.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of
   9  * the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  19  * MA 02110-1301 USA
  20  */
  21
  22  /* vt1211 routines and defines*/
  23
  24 #include <arch/io.h>
  25 #include <console/console.h>
  26 #include <device/device.h>
  27 #include <device/pnp.h>
  28 #include <uart8250.h>
  29 #include <stdlib.h>
  30
  31 #include "vt1211.h"
  32 #include "chip.h"
  33
  34 static unsigned char vt1211hwmonitorinits[]={
  35         0x10,0x3, 0x11,0x10, 0x12,0xd, 0x13,0x7f,
  36         0x14,0x21, 0x15,0x81, 0x16,0xbd, 0x17,0x8a,
  37         0x18,0x0, 0x19,0x0, 0x1a,0x0, 0x1b,0x0,
  38         0x1d,0xff, 0x1e,0x0, 0x1f,0x73, 0x20,0x67,
  39         0x21,0xc1, 0x22,0xca, 0x23,0x74, 0x24,0xc2,
  40         0x25,0xc7, 0x26,0xc9, 0x27,0x7f, 0x29,0x0,
  41         0x2a,0x0, 0x2b,0xff, 0x2c,0x0, 0x2d,0xff,
  42         0x2e,0x0, 0x2f,0xff, 0x30,0x0, 0x31,0xff,
  43         0x32,0x0, 0x33,0xff, 0x34,0x0, 0x39,0xff,
  44         0x3a,0x0, 0x3b,0xff, 0x3c,0xff, 0x3d,0xff,
  45         0x3e,0x0, 0x3f,0xb0, 0x43,0xff, 0x44,0xff,
  46         0x46,0xff, 0x47,0x50, 0x4a,0x3, 0x4b,0xc0,
  47         0x4c,0x0, 0x4d,0x0, 0x4e,0xf, 0x5d,0x77,
  48         0x5c,0x0, 0x5f,0x33, 0x40,0x1
  49 };
  50
  51 static void pnp_enter_ext_func_mode(device_t dev)
  52 {
  53         outb(0x87, dev->path.pnp.port);
  54         outb(0x87, dev->path.pnp.port);
  55 }
  56
  57 static void pnp_exit_ext_func_mode(device_t dev)
  58 {
  59         outb(0xaa, dev->path.pnp.port);
  60 }
  61
  62 static void vt1211_set_iobase(device_t dev, unsigned index, unsigned iobase)
  63 {
  64         switch (dev->path.pnp.device) {
  65                 case VT1211_FDC:
  66                 case VT1211_PP:
  67                 case VT1211_SP1:
  68                 case VT1211_SP2:
  69                         pnp_write_config(dev, index + 0, (iobase >> 2) & 0xff);
  70                         break;
  71                 case VT1211_HWM:
  72                 default:
  73                         pnp_write_config(dev, index + 0, (iobase >> 8) & 0xff);
  74                         pnp_write_config(dev, index + 1, iobase & 0xff);
  75                         break;
  76         }
  77 }
  78
  79 static void init_hwm(unsigned long base)
  80 {
  81         int i;
  82
  83         /* initialize vt1211 hardware monitor registers, which are at 0xECXX */
  84         for(i = 0; i < sizeof(vt1211hwmonitorinits); i += 2) {
  85                         outb(vt1211hwmonitorinits[i + 1],
  86                                         base + vt1211hwmonitorinits[i]);
  87         }
  88 }
  89
  90 static void vt1211_init(struct device *dev)
  91 {
  92         struct superio_via_vt1211_config *conf = dev->chip_info;
  93         struct resource *res0;
  94
  95         if (!dev->enabled) {
  96                 return;
  97         }
  98
  99         switch (dev->path.pnp.device) {
 100         case VT1211_FDC:
 101         case VT1211_PP:
 102                 break;
 103         case VT1211_SP1:
 104                 res0 = find_resource(dev, PNP_IDX_IO0);
 105                 init_uart8250(res0->base, &conf->com1);
 106                 break;
 107         case VT1211_SP2:
 108                 res0 = find_resource(dev, PNP_IDX_IO0);
 109                 init_uart8250(res0->base, &conf->com2);
 110                 break;
 111         case VT1211_HWM:
 112                 res0 = find_resource(dev, PNP_IDX_IO0);
 113                 init_hwm(res0->base);
 114                 break;
 115         default:
 116                 printk(BIOS_INFO, "vt1211 asked to initialise unknown device!\n");
 117         }
 118 }
 119
 120 static void vt1211_pnp_enable_resources(device_t dev)
 121 {
 122         printk(BIOS_DEBUG, "%s - enabling\n",dev_path(dev));
 123         pnp_enter_ext_func_mode(dev);
 124         pnp_enable_resources(dev);
 125         pnp_exit_ext_func_mode(dev);
 126 }
 127
 128 static void vt1211_pnp_set_resources(struct device *dev)
 129 {
 130         struct resource *res;
 131
 132 #if CONFIG_CONSOLE_SERIAL8250 == 1
 133         if( dev->path.pnp.device == 2 ){
 134                 for(res = dev->resource_list; res; res = res->next){
 135                         res->flags |= IORESOURCE_STORED;
 136                         report_resource_stored(dev, res, "");
 137                 }
 138                 return;
 139         }
 140 #endif
 141         pnp_enter_ext_func_mode(dev);
 142         /* Select the device */
 143         pnp_set_logical_device(dev);
 144
 145         /* Paranoia says I should disable the device here... */
 146         for(res = dev->resource_list; res; res = res->next){
 147                 if (!(res->flags & IORESOURCE_ASSIGNED)) {
 148                         printk(BIOS_ERR, "ERROR: %s %02lx %s size: 0x%010Lx not assigned\n",
 149                                 dev_path(dev), res->index,
 150                                 resource_type(res),
 151                                 res->size);
 152                         continue;
 153                 }
 154
 155                 /* Now store the resource */
 156                 if (res->flags & IORESOURCE_IO) {
 157                         vt1211_set_iobase(dev, res->index, res->base);
 158                 }
 159                 else if (res->flags & IORESOURCE_DRQ) {
 160                         pnp_set_drq(dev, res->index, res->base);
 161                 }
 162                 else if (res->flags  & IORESOURCE_IRQ) {
 163                         pnp_set_irq(dev, res->index, res->base);
 164                 }
 165                 else {
 166                         printk(BIOS_ERR, "ERROR: %s %02lx unknown resource type\n",
 167                                 dev_path(dev), res->index);
 168                         return;
 169                 }
 170                 res->flags |= IORESOURCE_STORED;
 171
 172                 report_resource_stored(dev, res, "");
 173         }
 174
 175         pnp_exit_ext_func_mode(dev);
 176 }
 177
 178 static void vt1211_pnp_enable(device_t dev)
 179 {
 180         if (!dev->enabled) {
 181                 pnp_enter_ext_func_mode(dev);
 182                 pnp_set_logical_device(dev);
 183                 pnp_set_enable(dev, 0);
 184                 pnp_exit_ext_func_mode(dev);
 185         }
 186 }
 187
 188 struct device_operations ops = {
 189         .read_resources   = pnp_read_resources,
 190         .set_resources    = vt1211_pnp_set_resources,
 191         .enable_resources = vt1211_pnp_enable_resources,
 192         .enable           = vt1211_pnp_enable,
 193         .init             = vt1211_init,
 194 };
 195
 196 static struct pnp_info pnp_dev_info[] = {
 197         { &ops, VT1211_FDC, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, { 0x07f8, 0}, },
 198         { &ops, VT1211_PP,  PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, { 0x07f8, 0}, },
 199         { &ops, VT1211_SP1, PNP_IO0 | PNP_IRQ0,            { 0x07f8, 0}, },
 200         { &ops, VT1211_SP2, PNP_IO0 | PNP_IRQ0,            { 0x07f8, 0}, },
 201         { &ops, VT1211_HWM, PNP_IO0 , { 0xff00, 0 }, },
 202 };
 203
 204 static void enable_dev(struct device *dev)
 205 {
 206         printk(BIOS_DEBUG, "vt1211 enabling PNP devices.\n");
 207         pnp_enable_devices(dev,
 208                         &ops,
 209                         ARRAY_SIZE(pnp_dev_info),
 210                         pnp_dev_info);
 211 }
 212
 213 struct chip_operations superio_via_vt1211_ops = {
 214         CHIP_NAME("VIA VT1211 Super I/O")
 215         .enable_dev = enable_dev,
 216 };