util/inteltool/gpio_groups.c

   1 /* inteltool - dump all registers on an Intel CPU + chipset based system */
   2 /* SPDX-License-Identifier: GPL-2.0-only */
   3
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <stddef.h>
   7 #include <stdint.h>
   8 #include <assert.h>
   9 #include <inttypes.h>
  10 #include "inteltool.h"
  11 #include "pcr.h"
  12
  13 #include "gpio_names/apollolake.h"
  14 #include "gpio_names/cannonlake.h"
  15 #include "gpio_names/cannonlake_lp.h"
  16 #include "gpio_names/denverton.h"
  17 #include "gpio_names/icelake.h"
  18 #include "gpio_names/lewisburg.h"
  19 #include "gpio_names/sunrise.h"
  20
  21 #define SBBAR_SIZE      (16 * MiB)
  22 #define PCR_PORT_SIZE   (64 * KiB)
  23
  24 static const char *decode_pad_mode(const struct gpio_group *const group,
  25                                    const size_t pad, const uint32_t dw0)
  26 {
  27         const size_t pad_mode = dw0 >> 10 & 7;
  28         const char *const pad_name =
  29                 group->pad_names[pad * group->func_count + pad_mode];
  30
  31         if (!pad_mode)
  32                 return pad_name[0] == '*' ? "*GPIO" : "GPIO";
  33         else if (pad_mode < group->func_count)
  34                 return group->pad_names[pad * group->func_count + pad_mode];
  35         else
  36                 return "RESERVED";
  37 }
  38
  39 static void print_gpio_group(const uint8_t pid, size_t pad_cfg,
  40                              const struct gpio_group *const group,
  41                              size_t pad_stepping)
  42 {
  43         size_t p;
  44
  45         printf("%s\n", group->display);
  46
  47         for (p = 0; p < group->pad_count; ++p, pad_cfg += pad_stepping) {
  48                 const uint32_t dw0 = read_pcr32(pid, pad_cfg);
  49                 const uint32_t dw1 = read_pcr32(pid, pad_cfg + 4);
  50                 const char *const pad_name =
  51                         group->pad_names[p * group->func_count];
  52
  53                 printf("0x%04zx: 0x%016"PRIx64" %-12s %-20s\n", pad_cfg,
  54                        (uint64_t)dw1 << 32 | dw0,
  55                        pad_name[0] == '*' ? &pad_name[1] : pad_name,
  56                        decode_pad_mode(group, p, dw0));
  57         }
  58 }
  59
  60 static void print_gpio_community(const struct gpio_community *const community,
  61                                  size_t pad_stepping)
  62 {
  63         size_t group, pad_count;
  64         size_t pad_cfg; /* offset in bytes under this communities PCR port */
  65
  66         printf("%s\n\nPCR Port ID: 0x%06zx\n\n",
  67                community->name, (size_t)community->pcr_port_id << 16);
  68
  69         for (group = 0, pad_count = 0; group < community->group_count; ++group)
  70                 pad_count += community->groups[group]->pad_count;
  71         assert(pad_count * 8 <= PCR_PORT_SIZE - 0x10);
  72
  73         pad_cfg = read_pcr32(community->pcr_port_id, 0x0c);
  74         if (pad_cfg + pad_count * 8 > PCR_PORT_SIZE) {
  75                 fprintf(stderr, "Bad Pad Base Address: 0x%08zx\n", pad_cfg);
  76                 return;
  77         }
  78
  79         for (group = 0; group < community->group_count; ++group) {
  80                 print_gpio_group(community->pcr_port_id,
  81                                  pad_cfg, community->groups[group],
  82                                  pad_stepping);
  83                 pad_cfg += community->groups[group]->pad_count * pad_stepping;
  84         }
  85 }
  86
  87 const struct gpio_community *const *get_gpio_communities(struct pci_dev *const sb,
  88                                                 size_t* community_count,
  89                                                 size_t* pad_stepping)
  90 {
  91         *pad_stepping = 8;
  92
  93         switch (sb->device_id) {
  94         case PCI_DEVICE_ID_INTEL_H110:
  95         case PCI_DEVICE_ID_INTEL_H170:
  96         case PCI_DEVICE_ID_INTEL_Z170:
  97         case PCI_DEVICE_ID_INTEL_Q170:
  98         case PCI_DEVICE_ID_INTEL_Q150:
  99         case PCI_DEVICE_ID_INTEL_B150:
 100         case PCI_DEVICE_ID_INTEL_C236:
 101         case PCI_DEVICE_ID_INTEL_C232:
 102         case PCI_DEVICE_ID_INTEL_QM170:
 103         case PCI_DEVICE_ID_INTEL_HM170:
 104         case PCI_DEVICE_ID_INTEL_CM236:
 105                 *community_count = ARRAY_SIZE(sunrise_communities);
 106                 return sunrise_communities;
 107         case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_PRE:
 108         case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_U_BASE_SKL:
 109         case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_Y_PREM_SKL:
 110         case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_U_PREM_SKL:
 111         case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_U_BASE_KBL:
 112         case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_U_PREM_KBL:
 113         case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_Y_PREM_KBL:
 114         case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_U_IHDCP_BASE:
 115         case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_U_IHDCP_PREM:
 116         case PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_Y_IHDCP_PREM:
 117                 *community_count = ARRAY_SIZE(sunrise_lp_communities);
 118                 return sunrise_lp_communities;
 119         case PCI_DEVICE_ID_INTEL_C621:
 120         case PCI_DEVICE_ID_INTEL_C622:
 121         case PCI_DEVICE_ID_INTEL_C624:
 122         case PCI_DEVICE_ID_INTEL_C625:
 123         case PCI_DEVICE_ID_INTEL_C626:
 124         case PCI_DEVICE_ID_INTEL_C627:
 125         case PCI_DEVICE_ID_INTEL_C628:
 126         case PCI_DEVICE_ID_INTEL_C629:
 127         case PCI_DEVICE_ID_INTEL_C621A:
 128         case PCI_DEVICE_ID_INTEL_C627A:
 129         case PCI_DEVICE_ID_INTEL_C629A:
 130         case PCI_DEVICE_ID_INTEL_C624_SUPER:
 131         case PCI_DEVICE_ID_INTEL_C627_SUPER_1:
 132         case PCI_DEVICE_ID_INTEL_C621_SUPER:
 133         case PCI_DEVICE_ID_INTEL_C627_SUPER_2:
 134         case PCI_DEVICE_ID_INTEL_C628_SUPER:
 135         case PCI_DEVICE_ID_INTEL_C621A_SUPER:
 136         case PCI_DEVICE_ID_INTEL_C627A_SUPER:
 137         case PCI_DEVICE_ID_INTEL_C629A_SUPER:
 138                 *community_count = ARRAY_SIZE(lewisburg_communities);
 139                 return lewisburg_communities;
 140         case PCI_DEVICE_ID_INTEL_DNV_LPC:
 141                 *community_count = ARRAY_SIZE(denverton_communities);
 142                 return denverton_communities;
 143         case PCI_DEVICE_ID_INTEL_APL_LPC:
 144                 *community_count = ARRAY_SIZE(apl_communities);
 145                 return apl_communities;
 146         case PCI_DEVICE_ID_INTEL_CANNONPOINT_LP_U_PREM:
 147                 *community_count = ARRAY_SIZE(cannonlake_pch_lp_communities);
 148                 *pad_stepping = 16;
 149                 return cannonlake_pch_lp_communities;
 150         case PCI_DEVICE_ID_INTEL_H310:
 151         case PCI_DEVICE_ID_INTEL_H370:
 152         case PCI_DEVICE_ID_INTEL_Z390:
 153         case PCI_DEVICE_ID_INTEL_Q370:
 154         case PCI_DEVICE_ID_INTEL_B360:
 155         case PCI_DEVICE_ID_INTEL_C246:
 156         case PCI_DEVICE_ID_INTEL_C242:
 157         case PCI_DEVICE_ID_INTEL_QM370:
 158         case PCI_DEVICE_ID_INTEL_HM370:
 159         case PCI_DEVICE_ID_INTEL_CM246:
 160                 *community_count = ARRAY_SIZE(cannonlake_pch_h_communities);
 161                 *pad_stepping = 16;
 162                 return cannonlake_pch_h_communities;
 163         case PCI_DEVICE_ID_INTEL_ICELAKE_LP_U:
 164                 *community_count = ARRAY_SIZE(icelake_pch_h_communities);
 165                 *pad_stepping = 16;
 166                 return icelake_pch_h_communities;
 167         default:
 168                 return NULL;
 169         }
 170 }
 171
 172 void print_gpio_groups(struct pci_dev *const sb)
 173 {
 174         size_t community_count;
 175         const struct gpio_community *const *communities;
 176         size_t pad_stepping;
 177
 178         communities = get_gpio_communities(sb, &community_count, &pad_stepping);
 179
 180         if (!communities)
 181                 return;
 182
 183         pcr_init(sb);
 184
 185         printf("\n============= GPIOS =============\n\n");
 186
 187         for (; community_count; --community_count)
 188                 print_gpio_community(*communities++, pad_stepping);
 189 }