Angel Pons | c74dae9 | 2020-04-02 23:48:16 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Uwe Hermann | b80dbf0 | 2007-04-22 19:08:13 +0000 | [diff] [blame] | 2 | |
Elyes Haouas | 04c3b5a | 2022-10-07 10:08:05 +0200 | [diff] [blame] | 3 | #include <commonlib/bsd/helpers.h> |
Eric Biederman | 8ca8d76 | 2003-04-22 19:02:15 +0000 | [diff] [blame] | 4 | #include <console/console.h> |
Eric Biederman | 5899fd8 | 2003-04-24 06:25:08 +0000 | [diff] [blame] | 5 | #include <device/device.h> |
Kyösti Mälkki | 318066f | 2014-02-12 14:18:50 +0200 | [diff] [blame] | 6 | #include <device/pci_def.h> |
Elyes HAOUAS | ede8dd0 | 2019-06-23 06:57:53 +0200 | [diff] [blame] | 7 | #include <stdlib.h> |
Eric Biederman | e9a271e3 | 2003-09-02 03:36:25 +0000 | [diff] [blame] | 8 | #include <string.h> |
Elyes Haouas | 04c3b5a | 2022-10-07 10:08:05 +0200 | [diff] [blame] | 9 | #include <types.h> |
Eric Biederman | e9a271e3 | 2003-09-02 03:36:25 +0000 | [diff] [blame] | 10 | |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 11 | /** |
Duncan Laurie | 6f88a6e | 2011-07-18 10:41:36 -0700 | [diff] [blame] | 12 | * Given a Local APIC ID, find the device structure. |
| 13 | * |
| 14 | * @param apic_id The Local APIC ID number. |
| 15 | * @return Pointer to the device structure (if found), 0 otherwise. |
| 16 | */ |
Martin Roth | 38ddbfb | 2019-10-23 21:41:00 -0600 | [diff] [blame] | 17 | struct device *dev_find_lapic(unsigned int apic_id) |
Duncan Laurie | 6f88a6e | 2011-07-18 10:41:36 -0700 | [diff] [blame] | 18 | { |
Aaron Durbin | f034902 | 2017-11-10 10:47:54 -0700 | [diff] [blame] | 19 | struct device *dev; |
| 20 | struct device *result = NULL; |
Duncan Laurie | 6f88a6e | 2011-07-18 10:41:36 -0700 | [diff] [blame] | 21 | |
| 22 | for (dev = all_devices; dev; dev = dev->next) { |
| 23 | if (dev->path.type == DEVICE_PATH_APIC && |
| 24 | dev->path.apic.apic_id == apic_id) { |
| 25 | result = dev; |
| 26 | break; |
| 27 | } |
| 28 | } |
| 29 | return result; |
| 30 | } |
| 31 | |
| 32 | /** |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 33 | * Find a device of a given vendor and type. |
| 34 | * |
| 35 | * @param vendor A PCI vendor ID (e.g. 0x8086 for Intel). |
| 36 | * @param device A PCI device ID. |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 37 | * @param from Pointer to the device structure, used as a starting point in |
| 38 | * the linked list of all_devices, which can be 0 to start at the |
| 39 | * head of the list (i.e. all_devices). |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 40 | * @return Pointer to the device struct. |
Eric Biederman | 8ca8d76 | 2003-04-22 19:02:15 +0000 | [diff] [blame] | 41 | */ |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 42 | struct device *dev_find_device(u16 vendor, u16 device, struct device *from) |
Eric Biederman | 8ca8d76 | 2003-04-22 19:02:15 +0000 | [diff] [blame] | 43 | { |
| 44 | if (!from) |
| 45 | from = all_devices; |
| 46 | else |
| 47 | from = from->next; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 48 | |
| 49 | while (from && (from->vendor != vendor || from->device != device)) |
Eric Biederman | 8ca8d76 | 2003-04-22 19:02:15 +0000 | [diff] [blame] | 50 | from = from->next; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 51 | |
Eric Biederman | 8ca8d76 | 2003-04-22 19:02:15 +0000 | [diff] [blame] | 52 | return from; |
| 53 | } |
| 54 | |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 55 | /** |
| 56 | * Find a device of a given class. |
| 57 | * |
| 58 | * @param class Class of the device. |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 59 | * @param from Pointer to the device structure, used as a starting point in |
| 60 | * the linked list of all_devices, which can be 0 to start at the |
| 61 | * head of the list (i.e. all_devices). |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 62 | * @return Pointer to the device struct. |
Eric Biederman | 8ca8d76 | 2003-04-22 19:02:15 +0000 | [diff] [blame] | 63 | */ |
| 64 | struct device *dev_find_class(unsigned int class, struct device *from) |
| 65 | { |
| 66 | if (!from) |
| 67 | from = all_devices; |
| 68 | else |
| 69 | from = from->next; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 70 | |
Greg Watson | 5965169 | 2003-12-17 17:39:53 +0000 | [diff] [blame] | 71 | while (from && (from->class & 0xffffff00) != class) |
Eric Biederman | 8ca8d76 | 2003-04-22 19:02:15 +0000 | [diff] [blame] | 72 | from = from->next; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 73 | |
Eric Biederman | 8ca8d76 | 2003-04-22 19:02:15 +0000 | [diff] [blame] | 74 | return from; |
| 75 | } |
| 76 | |
Duncan Laurie | 5f5d914 | 2013-06-10 09:59:17 -0700 | [diff] [blame] | 77 | /** |
| 78 | * Encode the device path into 3 bytes for logging to CMOS. |
| 79 | * |
| 80 | * @param dev The device path to encode. |
| 81 | * @return Device path encoded into lower 3 bytes of dword. |
| 82 | */ |
Subrata Banik | 564547f | 2018-05-02 10:27:36 +0530 | [diff] [blame] | 83 | u32 dev_path_encode(const struct device *dev) |
Duncan Laurie | 5f5d914 | 2013-06-10 09:59:17 -0700 | [diff] [blame] | 84 | { |
| 85 | u32 ret; |
| 86 | |
| 87 | if (!dev) |
| 88 | return 0; |
| 89 | |
| 90 | /* Store the device type in 3rd byte. */ |
| 91 | ret = dev->path.type << 16; |
| 92 | |
| 93 | /* Encode the device specific path in the low word. */ |
| 94 | switch (dev->path.type) { |
| 95 | case DEVICE_PATH_ROOT: |
| 96 | break; |
| 97 | case DEVICE_PATH_PCI: |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 98 | ret |= dev->upstream->segment_group << 16 | dev->upstream->secondary << 8 | dev->path.pci.devfn; |
Duncan Laurie | 5f5d914 | 2013-06-10 09:59:17 -0700 | [diff] [blame] | 99 | break; |
| 100 | case DEVICE_PATH_PNP: |
| 101 | ret |= dev->path.pnp.port << 8 | dev->path.pnp.device; |
| 102 | break; |
| 103 | case DEVICE_PATH_I2C: |
Duncan Laurie | b7ce5fe | 2016-05-07 19:49:37 -0700 | [diff] [blame] | 104 | ret |= dev->path.i2c.mode_10bit << 8 | dev->path.i2c.device; |
Duncan Laurie | 5f5d914 | 2013-06-10 09:59:17 -0700 | [diff] [blame] | 105 | break; |
| 106 | case DEVICE_PATH_APIC: |
| 107 | ret |= dev->path.apic.apic_id; |
| 108 | break; |
| 109 | case DEVICE_PATH_DOMAIN: |
| 110 | ret |= dev->path.domain.domain; |
| 111 | break; |
| 112 | case DEVICE_PATH_CPU_CLUSTER: |
| 113 | ret |= dev->path.cpu_cluster.cluster; |
| 114 | break; |
| 115 | case DEVICE_PATH_CPU: |
| 116 | ret |= dev->path.cpu.id; |
| 117 | break; |
| 118 | case DEVICE_PATH_CPU_BUS: |
| 119 | ret |= dev->path.cpu_bus.id; |
| 120 | break; |
| 121 | case DEVICE_PATH_IOAPIC: |
| 122 | ret |= dev->path.ioapic.ioapic_id; |
| 123 | break; |
Duncan Laurie | 4650f5b | 2016-05-07 20:01:34 -0700 | [diff] [blame] | 124 | case DEVICE_PATH_GENERIC: |
| 125 | ret |= dev->path.generic.subid << 8 | dev->path.generic.id; |
| 126 | break; |
Furquan Shaikh | 7606c37 | 2017-02-11 10:57:23 -0800 | [diff] [blame] | 127 | case DEVICE_PATH_SPI: |
| 128 | ret |= dev->path.spi.cs; |
| 129 | break; |
Duncan Laurie | bae9f85 | 2018-05-07 14:18:13 -0700 | [diff] [blame] | 130 | case DEVICE_PATH_USB: |
Karthikeyan Ramasubramanian | 1939824 | 2019-07-11 12:23:35 -0600 | [diff] [blame] | 131 | ret |= dev->path.usb.port_type << 8 | dev->path.usb.port_id; |
Duncan Laurie | bae9f85 | 2018-05-07 14:18:13 -0700 | [diff] [blame] | 132 | break; |
Michael Niewöhner | dbb667a | 2020-12-11 21:26:02 +0100 | [diff] [blame] | 133 | case DEVICE_PATH_GPIO: |
| 134 | ret |= dev->path.gpio.id; |
| 135 | break; |
Mario Scheithauer | 67f63e7 | 2022-11-02 15:57:10 +0100 | [diff] [blame] | 136 | case DEVICE_PATH_MDIO: |
| 137 | ret |= dev->path.mdio.addr; |
| 138 | break; |
Duncan Laurie | 5f5d914 | 2013-06-10 09:59:17 -0700 | [diff] [blame] | 139 | case DEVICE_PATH_NONE: |
Justin TerAvest | ca2ed9f | 2018-01-17 16:36:30 -0800 | [diff] [blame] | 140 | case DEVICE_PATH_MMIO: /* don't care */ |
Duncan Laurie | 5f5d914 | 2013-06-10 09:59:17 -0700 | [diff] [blame] | 141 | default: |
| 142 | break; |
| 143 | } |
| 144 | |
| 145 | return ret; |
| 146 | } |
| 147 | |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 148 | /* |
| 149 | * Warning: This function uses a static buffer. Don't call it more than once |
| 150 | * from the same print statement! |
| 151 | */ |
Lubomir Rintel | 9ba8f7c | 2018-04-26 00:00:22 +0200 | [diff] [blame] | 152 | const char *dev_path(const struct device *dev) |
Eric Biederman | e9a271e3 | 2003-09-02 03:36:25 +0000 | [diff] [blame] | 153 | { |
| 154 | static char buffer[DEVICE_PATH_MAX]; |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 155 | |
Eric Biederman | e9a271e3 | 2003-09-02 03:36:25 +0000 | [diff] [blame] | 156 | buffer[0] = '\0'; |
| 157 | if (!dev) { |
Angel Pons | d7df383 | 2021-08-18 08:32:45 +0200 | [diff] [blame] | 158 | strcpy(buffer, "<null>"); |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 159 | } else { |
Elyes HAOUAS | 0ce41f1 | 2018-11-13 10:03:31 +0100 | [diff] [blame] | 160 | switch (dev->path.type) { |
Patrick Rudolph | 6a81184 | 2017-11-01 11:33:00 +0100 | [diff] [blame] | 161 | case DEVICE_PATH_NONE: |
Angel Pons | d7df383 | 2021-08-18 08:32:45 +0200 | [diff] [blame] | 162 | strcpy(buffer, "NONE"); |
Patrick Rudolph | 6a81184 | 2017-11-01 11:33:00 +0100 | [diff] [blame] | 163 | break; |
Eric Biederman | 83b991a | 2003-10-11 06:20:25 +0000 | [diff] [blame] | 164 | case DEVICE_PATH_ROOT: |
Angel Pons | d7df383 | 2021-08-18 08:32:45 +0200 | [diff] [blame] | 165 | strcpy(buffer, "Root Device"); |
Eric Biederman | 83b991a | 2003-10-11 06:20:25 +0000 | [diff] [blame] | 166 | break; |
Eric Biederman | e9a271e3 | 2003-09-02 03:36:25 +0000 | [diff] [blame] | 167 | case DEVICE_PATH_PCI: |
Elyes HAOUAS | b748221 | 2018-05-16 12:58:19 +0200 | [diff] [blame] | 168 | snprintf(buffer, sizeof(buffer), |
Felix Held | 3b5b66d | 2024-01-11 22:26:18 +0100 | [diff] [blame] | 169 | "PCI: %02x:%02x:%02x.%01x", |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 170 | dev->upstream->segment_group, |
| 171 | dev->upstream->secondary, |
Vladimir Serbinenko | a37383d | 2013-11-26 02:41:26 +0100 | [diff] [blame] | 172 | PCI_SLOT(dev->path.pci.devfn), |
| 173 | PCI_FUNC(dev->path.pci.devfn)); |
Eric Biederman | e9a271e3 | 2003-09-02 03:36:25 +0000 | [diff] [blame] | 174 | break; |
| 175 | case DEVICE_PATH_PNP: |
Elyes HAOUAS | b748221 | 2018-05-16 12:58:19 +0200 | [diff] [blame] | 176 | snprintf(buffer, sizeof(buffer), "PNP: %04x.%01x", |
Vladimir Serbinenko | a37383d | 2013-11-26 02:41:26 +0100 | [diff] [blame] | 177 | dev->path.pnp.port, dev->path.pnp.device); |
Eric Biederman | e9a271e3 | 2003-09-02 03:36:25 +0000 | [diff] [blame] | 178 | break; |
| 179 | case DEVICE_PATH_I2C: |
Elyes HAOUAS | b748221 | 2018-05-16 12:58:19 +0200 | [diff] [blame] | 180 | snprintf(buffer, sizeof(buffer), "I2C: %02x:%02x", |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 181 | dev->upstream->secondary, |
Vladimir Serbinenko | a37383d | 2013-11-26 02:41:26 +0100 | [diff] [blame] | 182 | dev->path.i2c.device); |
Eric Biederman | e9a271e3 | 2003-09-02 03:36:25 +0000 | [diff] [blame] | 183 | break; |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 184 | case DEVICE_PATH_APIC: |
Elyes HAOUAS | b748221 | 2018-05-16 12:58:19 +0200 | [diff] [blame] | 185 | snprintf(buffer, sizeof(buffer), "APIC: %02x", |
Vladimir Serbinenko | a37383d | 2013-11-26 02:41:26 +0100 | [diff] [blame] | 186 | dev->path.apic.apic_id); |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 187 | break; |
Sven Schnelle | 0fa50a1 | 2012-06-21 22:19:48 +0200 | [diff] [blame] | 188 | case DEVICE_PATH_IOAPIC: |
Elyes HAOUAS | b748221 | 2018-05-16 12:58:19 +0200 | [diff] [blame] | 189 | snprintf(buffer, sizeof(buffer), "IOAPIC: %02x", |
Vladimir Serbinenko | a37383d | 2013-11-26 02:41:26 +0100 | [diff] [blame] | 190 | dev->path.ioapic.ioapic_id); |
Sven Schnelle | 0fa50a1 | 2012-06-21 22:19:48 +0200 | [diff] [blame] | 191 | break; |
Stefan Reinauer | 4aff445 | 2013-02-12 14:17:15 -0800 | [diff] [blame] | 192 | case DEVICE_PATH_DOMAIN: |
Patrick Rudolph | db77980 | 2024-01-19 20:04:31 +0100 | [diff] [blame] | 193 | snprintf(buffer, sizeof(buffer), "DOMAIN: %08x", |
Stefan Reinauer | 4aff445 | 2013-02-12 14:17:15 -0800 | [diff] [blame] | 194 | dev->path.domain.domain); |
Eric Biederman | 7003ba4 | 2004-10-16 06:20:29 +0000 | [diff] [blame] | 195 | break; |
Stefan Reinauer | 0aa37c4 | 2013-02-12 15:20:54 -0800 | [diff] [blame] | 196 | case DEVICE_PATH_CPU_CLUSTER: |
Elyes HAOUAS | b748221 | 2018-05-16 12:58:19 +0200 | [diff] [blame] | 197 | snprintf(buffer, sizeof(buffer), "CPU_CLUSTER: %01x", |
Stefan Reinauer | 0aa37c4 | 2013-02-12 15:20:54 -0800 | [diff] [blame] | 198 | dev->path.cpu_cluster.cluster); |
Eric Biederman | 7003ba4 | 2004-10-16 06:20:29 +0000 | [diff] [blame] | 199 | break; |
Eric Biederman | a9e632c | 2004-11-18 22:38:08 +0000 | [diff] [blame] | 200 | case DEVICE_PATH_CPU: |
Elyes HAOUAS | b748221 | 2018-05-16 12:58:19 +0200 | [diff] [blame] | 201 | snprintf(buffer, sizeof(buffer), |
Vladimir Serbinenko | a37383d | 2013-11-26 02:41:26 +0100 | [diff] [blame] | 202 | "CPU: %02x", dev->path.cpu.id); |
Eric Biederman | a9e632c | 2004-11-18 22:38:08 +0000 | [diff] [blame] | 203 | break; |
| 204 | case DEVICE_PATH_CPU_BUS: |
Elyes HAOUAS | b748221 | 2018-05-16 12:58:19 +0200 | [diff] [blame] | 205 | snprintf(buffer, sizeof(buffer), |
Vladimir Serbinenko | a37383d | 2013-11-26 02:41:26 +0100 | [diff] [blame] | 206 | "CPU_BUS: %02x", dev->path.cpu_bus.id); |
Eric Biederman | a9e632c | 2004-11-18 22:38:08 +0000 | [diff] [blame] | 207 | break; |
Duncan Laurie | 4650f5b | 2016-05-07 20:01:34 -0700 | [diff] [blame] | 208 | case DEVICE_PATH_GENERIC: |
Elyes HAOUAS | b748221 | 2018-05-16 12:58:19 +0200 | [diff] [blame] | 209 | snprintf(buffer, sizeof(buffer), |
Duncan Laurie | 4650f5b | 2016-05-07 20:01:34 -0700 | [diff] [blame] | 210 | "GENERIC: %d.%d", dev->path.generic.id, |
| 211 | dev->path.generic.subid); |
| 212 | break; |
Furquan Shaikh | 7606c37 | 2017-02-11 10:57:23 -0800 | [diff] [blame] | 213 | case DEVICE_PATH_SPI: |
Elyes HAOUAS | b748221 | 2018-05-16 12:58:19 +0200 | [diff] [blame] | 214 | snprintf(buffer, sizeof(buffer), "SPI: %02x", |
Furquan Shaikh | 7606c37 | 2017-02-11 10:57:23 -0800 | [diff] [blame] | 215 | dev->path.spi.cs); |
| 216 | break; |
Duncan Laurie | bae9f85 | 2018-05-07 14:18:13 -0700 | [diff] [blame] | 217 | case DEVICE_PATH_USB: |
Elyes HAOUAS | b748221 | 2018-05-16 12:58:19 +0200 | [diff] [blame] | 218 | snprintf(buffer, sizeof(buffer), "USB%u port %u", |
Duncan Laurie | bae9f85 | 2018-05-07 14:18:13 -0700 | [diff] [blame] | 219 | dev->path.usb.port_type, dev->path.usb.port_id); |
| 220 | break; |
Justin TerAvest | ca2ed9f | 2018-01-17 16:36:30 -0800 | [diff] [blame] | 221 | case DEVICE_PATH_MMIO: |
Jacob Garber | d552aca | 2019-07-16 12:55:00 -0600 | [diff] [blame] | 222 | snprintf(buffer, sizeof(buffer), "MMIO: %08lx", |
Justin TerAvest | ca2ed9f | 2018-01-17 16:36:30 -0800 | [diff] [blame] | 223 | dev->path.mmio.addr); |
| 224 | break; |
Michael Niewöhner | dbb667a | 2020-12-11 21:26:02 +0100 | [diff] [blame] | 225 | case DEVICE_PATH_GPIO: |
| 226 | snprintf(buffer, sizeof(buffer), "GPIO: %d", dev->path.gpio.id); |
| 227 | break; |
Mario Scheithauer | 67f63e7 | 2022-11-02 15:57:10 +0100 | [diff] [blame] | 228 | case DEVICE_PATH_MDIO: |
| 229 | snprintf(buffer, sizeof(buffer), "MDIO: %02x", dev->path.mdio.addr); |
| 230 | break; |
Eric Biederman | e9a271e3 | 2003-09-02 03:36:25 +0000 | [diff] [blame] | 231 | default: |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 232 | printk(BIOS_ERR, "Unknown device path type: %d\n", |
| 233 | dev->path.type); |
Eric Biederman | e9a271e3 | 2003-09-02 03:36:25 +0000 | [diff] [blame] | 234 | break; |
| 235 | } |
| 236 | } |
| 237 | return buffer; |
| 238 | } |
| 239 | |
Furquan Shaikh | 5b5c233 | 2020-04-24 21:31:35 -0700 | [diff] [blame] | 240 | const char *dev_name(const struct device *dev) |
Kyösti Mälkki | 7baadac | 2012-10-07 14:57:15 +0200 | [diff] [blame] | 241 | { |
Kyösti Mälkki | 7d54eb8 | 2012-10-10 23:14:28 +0300 | [diff] [blame] | 242 | if (dev->name) |
| 243 | return dev->name; |
| 244 | else if (dev->chip_ops && dev->chip_ops->name) |
Kyösti Mälkki | 7baadac | 2012-10-07 14:57:15 +0200 | [diff] [blame] | 245 | return dev->chip_ops->name; |
| 246 | else |
| 247 | return "unknown"; |
| 248 | } |
| 249 | |
Shuo Liu | 271ee07 | 2024-03-29 00:42:28 +0800 | [diff] [blame] | 250 | /* Returns the domain for the given device */ |
| 251 | const struct device *dev_get_domain(const struct device *dev) |
Patrick Rudolph | ab6bcd2 | 2024-01-19 08:24:36 +0100 | [diff] [blame] | 252 | { |
Shuo Liu | 271ee07 | 2024-03-29 00:42:28 +0800 | [diff] [blame] | 253 | /* Walk up the tree up to the domain */ |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 254 | while (dev && dev->upstream && !is_root_device(dev)) { |
Patrick Rudolph | ab6bcd2 | 2024-01-19 08:24:36 +0100 | [diff] [blame] | 255 | if (dev->path.type == DEVICE_PATH_DOMAIN) |
| 256 | return dev; |
Shuo Liu | 101685d | 2024-04-18 00:44:42 +0800 | [diff] [blame] | 257 | dev = dev->upstream->dev; |
Patrick Rudolph | ab6bcd2 | 2024-01-19 08:24:36 +0100 | [diff] [blame] | 258 | } |
| 259 | |
| 260 | return NULL; |
| 261 | } |
| 262 | |
Eric Biederman | 5cd8173 | 2004-03-11 15:01:31 +0000 | [diff] [blame] | 263 | /** |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 264 | * Allocate 64 more resources to the free list. |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 265 | * |
| 266 | * @return TODO. |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 267 | */ |
| 268 | static int allocate_more_resources(void) |
| 269 | { |
| 270 | int i; |
| 271 | struct resource *new_res_list; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 272 | |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 273 | new_res_list = malloc(64 * sizeof(*new_res_list)); |
| 274 | |
| 275 | if (new_res_list == NULL) |
| 276 | return 0; |
| 277 | |
| 278 | memset(new_res_list, 0, 64 * sizeof(*new_res_list)); |
| 279 | |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 280 | for (i = 0; i < 64 - 1; i++) |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 281 | new_res_list[i].next = &new_res_list[i+1]; |
| 282 | |
| 283 | free_resources = new_res_list; |
| 284 | return 1; |
| 285 | } |
| 286 | |
| 287 | /** |
| 288 | * Remove resource res from the device's list and add it to the free list. |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 289 | * |
| 290 | * @param dev TODO |
| 291 | * @param res TODO |
| 292 | * @param prev TODO |
| 293 | * @return TODO. |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 294 | */ |
Aaron Durbin | f034902 | 2017-11-10 10:47:54 -0700 | [diff] [blame] | 295 | static void free_resource(struct device *dev, struct resource *res, |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 296 | struct resource *prev) |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 297 | { |
| 298 | if (prev) |
| 299 | prev->next = res->next; |
| 300 | else |
| 301 | dev->resource_list = res->next; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 302 | |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 303 | res->next = free_resources; |
| 304 | free_resources = res; |
| 305 | } |
| 306 | |
| 307 | /** |
Eric Biederman | 5cd8173 | 2004-03-11 15:01:31 +0000 | [diff] [blame] | 308 | * See if we have unused but allocated resource structures. |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 309 | * |
Eric Biederman | 5cd8173 | 2004-03-11 15:01:31 +0000 | [diff] [blame] | 310 | * If so remove the allocation. |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 311 | * |
| 312 | * @param dev The device to find the resource on. |
Eric Biederman | 5cd8173 | 2004-03-11 15:01:31 +0000 | [diff] [blame] | 313 | */ |
Aaron Durbin | f034902 | 2017-11-10 10:47:54 -0700 | [diff] [blame] | 314 | void compact_resources(struct device *dev) |
Eric Biederman | 5cd8173 | 2004-03-11 15:01:31 +0000 | [diff] [blame] | 315 | { |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 316 | struct resource *res, *next, *prev = NULL; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 317 | |
Eric Biederman | 5cd8173 | 2004-03-11 15:01:31 +0000 | [diff] [blame] | 318 | /* Move all of the free resources to the end */ |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 319 | for (res = dev->resource_list; res; res = next) { |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 320 | next = res->next; |
| 321 | if (!res->flags) |
| 322 | free_resource(dev, res, prev); |
| 323 | else |
| 324 | prev = res; |
Eric Biederman | 5cd8173 | 2004-03-11 15:01:31 +0000 | [diff] [blame] | 325 | } |
| 326 | } |
| 327 | |
| 328 | /** |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 329 | * See if a resource structure already exists for a given index. |
| 330 | * |
| 331 | * @param dev The device to find the resource on. |
| 332 | * @param index The index of the resource on the device. |
| 333 | * @return The resource, if it already exists. |
Eric Biederman | 5cd8173 | 2004-03-11 15:01:31 +0000 | [diff] [blame] | 334 | */ |
Martin Roth | 38ddbfb | 2019-10-23 21:41:00 -0600 | [diff] [blame] | 335 | struct resource *probe_resource(const struct device *dev, unsigned int index) |
Eric Biederman | 5cd8173 | 2004-03-11 15:01:31 +0000 | [diff] [blame] | 336 | { |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 337 | struct resource *res; |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 338 | |
Eric Biederman | 5cd8173 | 2004-03-11 15:01:31 +0000 | [diff] [blame] | 339 | /* See if there is a resource with the appropriate index */ |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 340 | for (res = dev->resource_list; res; res = res->next) { |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 341 | if (res->index == index) |
Eric Biederman | 5cd8173 | 2004-03-11 15:01:31 +0000 | [diff] [blame] | 342 | break; |
Eric Biederman | 5cd8173 | 2004-03-11 15:01:31 +0000 | [diff] [blame] | 343 | } |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 344 | |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 345 | return res; |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 346 | } |
| 347 | |
| 348 | /** |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 349 | * See if a resource structure already exists for a given index and if not |
| 350 | * allocate one. |
| 351 | * |
Paul Menzel | 2092387 | 2014-06-07 13:31:29 +0200 | [diff] [blame] | 352 | * Then initialize the resource to default values. |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 353 | * |
| 354 | * @param dev The device to find the resource on. |
| 355 | * @param index The index of the resource on the device. |
| 356 | * @return TODO. |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 357 | */ |
Martin Roth | 38ddbfb | 2019-10-23 21:41:00 -0600 | [diff] [blame] | 358 | struct resource *new_resource(struct device *dev, unsigned int index) |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 359 | { |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 360 | struct resource *resource, *tail; |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 361 | |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 362 | /* First move all of the free resources to the end. */ |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 363 | compact_resources(dev); |
| 364 | |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 365 | /* See if there is a resource with the appropriate index. */ |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 366 | resource = probe_resource(dev, index); |
Eric Biederman | 5cd8173 | 2004-03-11 15:01:31 +0000 | [diff] [blame] | 367 | if (!resource) { |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 368 | if (free_resources == NULL && !allocate_more_resources()) |
| 369 | die("Couldn't allocate more resources."); |
| 370 | |
| 371 | resource = free_resources; |
| 372 | free_resources = free_resources->next; |
Eric Biederman | 5cd8173 | 2004-03-11 15:01:31 +0000 | [diff] [blame] | 373 | memset(resource, 0, sizeof(*resource)); |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 374 | resource->next = NULL; |
| 375 | tail = dev->resource_list; |
| 376 | if (tail) { |
Frans Hendriks | a9caa50 | 2021-02-01 11:44:37 +0100 | [diff] [blame] | 377 | while (tail->next) |
| 378 | tail = tail->next; |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 379 | tail->next = resource; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 380 | } else { |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 381 | dev->resource_list = resource; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 382 | } |
Eric Biederman | 5cd8173 | 2004-03-11 15:01:31 +0000 | [diff] [blame] | 383 | } |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 384 | |
| 385 | /* Initialize the resource values. */ |
Eric Biederman | 5cd8173 | 2004-03-11 15:01:31 +0000 | [diff] [blame] | 386 | if (!(resource->flags & IORESOURCE_FIXED)) { |
| 387 | resource->flags = 0; |
| 388 | resource->base = 0; |
| 389 | } |
| 390 | resource->size = 0; |
| 391 | resource->limit = 0; |
| 392 | resource->index = index; |
| 393 | resource->align = 0; |
| 394 | resource->gran = 0; |
| 395 | |
| 396 | return resource; |
| 397 | } |
| 398 | |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 399 | /** |
| 400 | * Return an existing resource structure for a given index. |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 401 | * |
| 402 | * @param dev The device to find the resource on. |
| 403 | * @param index The index of the resource on the device. |
| 404 | * return TODO. |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 405 | */ |
Martin Roth | 38ddbfb | 2019-10-23 21:41:00 -0600 | [diff] [blame] | 406 | struct resource *find_resource(const struct device *dev, unsigned int index) |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 407 | { |
| 408 | struct resource *resource; |
| 409 | |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 410 | /* See if there is a resource with the appropriate index. */ |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 411 | resource = probe_resource(dev, index); |
Nico Huber | 6a07db2 | 2023-05-12 15:46:24 +0200 | [diff] [blame] | 412 | if (!resource) |
| 413 | die("%s missing resource: %02x\n", dev_path(dev), index); |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 414 | return resource; |
| 415 | } |
| 416 | |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 417 | /** |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 418 | * Round a number up to the next multiple of gran. |
| 419 | * |
| 420 | * @param val The starting value. |
| 421 | * @param gran Granularity we are aligning the number to. |
| 422 | * @return The aligned value. |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 423 | */ |
| 424 | static resource_t align_up(resource_t val, unsigned long gran) |
| 425 | { |
| 426 | resource_t mask; |
| 427 | mask = (1ULL << gran) - 1ULL; |
| 428 | val += mask; |
| 429 | val &= ~mask; |
| 430 | return val; |
| 431 | } |
| 432 | |
| 433 | /** |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 434 | * Round a number up to the previous multiple of gran. |
| 435 | * |
| 436 | * @param val The starting value. |
| 437 | * @param gran Granularity we are aligning the number to. |
| 438 | * @return The aligned value. |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 439 | */ |
| 440 | static resource_t align_down(resource_t val, unsigned long gran) |
| 441 | { |
| 442 | resource_t mask; |
| 443 | mask = (1ULL << gran) - 1ULL; |
| 444 | val &= ~mask; |
| 445 | return val; |
| 446 | } |
| 447 | |
| 448 | /** |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 449 | * Compute the maximum address that is part of a resource. |
| 450 | * |
| 451 | * @param resource The resource whose limit is desired. |
| 452 | * @return The end. |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 453 | */ |
Kyösti Mälkki | b228771 | 2021-06-14 11:29:51 +0300 | [diff] [blame] | 454 | resource_t resource_end(const struct resource *resource) |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 455 | { |
| 456 | resource_t base, end; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 457 | |
| 458 | /* Get the base address. */ |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 459 | base = resource->base; |
| 460 | |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 461 | /* |
| 462 | * For a non bridge resource granularity and alignment are the same. |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 463 | * For a bridge resource align is the largest needed alignment below |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 464 | * the bridge. While the granularity is simply how many low bits of |
| 465 | * the address cannot be set. |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 466 | */ |
Stefan Reinauer | 14e2277 | 2010-04-27 06:56:47 +0000 | [diff] [blame] | 467 | |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 468 | /* Get the end (rounded up). */ |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 469 | end = base + align_up(resource->size, resource->gran) - 1; |
| 470 | |
| 471 | return end; |
| 472 | } |
| 473 | |
| 474 | /** |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 475 | * Compute the maximum legal value for resource->base. |
| 476 | * |
| 477 | * @param resource The resource whose maximum is desired. |
| 478 | * @return The maximum. |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 479 | */ |
Kyösti Mälkki | b228771 | 2021-06-14 11:29:51 +0300 | [diff] [blame] | 480 | resource_t resource_max(const struct resource *resource) |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 481 | { |
| 482 | resource_t max; |
| 483 | |
| 484 | max = align_down(resource->limit - resource->size + 1, resource->align); |
| 485 | |
| 486 | return max; |
| 487 | } |
| 488 | |
| 489 | /** |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 490 | * Return the resource type of a resource. |
| 491 | * |
| 492 | * @param resource The resource type to decode. |
| 493 | * @return TODO. |
Yinghai Lu | 13f1c2a | 2005-07-08 02:49:49 +0000 | [diff] [blame] | 494 | */ |
Kyösti Mälkki | b228771 | 2021-06-14 11:29:51 +0300 | [diff] [blame] | 495 | const char *resource_type(const struct resource *resource) |
Yinghai Lu | 13f1c2a | 2005-07-08 02:49:49 +0000 | [diff] [blame] | 496 | { |
| 497 | static char buffer[RESOURCE_TYPE_MAX]; |
Elyes HAOUAS | b748221 | 2018-05-16 12:58:19 +0200 | [diff] [blame] | 498 | snprintf(buffer, sizeof(buffer), "%s%s%s%s", |
Vladimir Serbinenko | a37383d | 2013-11-26 02:41:26 +0100 | [diff] [blame] | 499 | ((resource->flags & IORESOURCE_READONLY) ? "ro" : ""), |
| 500 | ((resource->flags & IORESOURCE_PREFETCH) ? "pref" : ""), |
| 501 | ((resource->flags == 0) ? "unused" : |
| 502 | (resource->flags & IORESOURCE_IO) ? "io" : |
| 503 | (resource->flags & IORESOURCE_DRQ) ? "drq" : |
| 504 | (resource->flags & IORESOURCE_IRQ) ? "irq" : |
| 505 | (resource->flags & IORESOURCE_MEM) ? "mem" : "??????"), |
| 506 | ((resource->flags & IORESOURCE_PCI64) ? "64" : "")); |
Yinghai Lu | 13f1c2a | 2005-07-08 02:49:49 +0000 | [diff] [blame] | 507 | return buffer; |
| 508 | } |
| 509 | |
| 510 | /** |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 511 | * Print the resource that was just stored. |
| 512 | * |
Martin Roth | 63373ed | 2013-07-08 16:24:19 -0600 | [diff] [blame] | 513 | * @param dev The device the stored resource lives on. |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 514 | * @param resource The resource that was just stored. |
| 515 | * @param comment TODO |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 516 | */ |
Kyösti Mälkki | b228771 | 2021-06-14 11:29:51 +0300 | [diff] [blame] | 517 | void report_resource_stored(struct device *dev, const struct resource *resource, |
Uwe Hermann | c1ee429 | 2010-10-17 19:01:48 +0000 | [diff] [blame] | 518 | const char *comment) |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 519 | { |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 520 | char buf[10]; |
| 521 | unsigned long long base, end; |
| 522 | |
| 523 | if (!(resource->flags & IORESOURCE_STORED)) |
| 524 | return; |
| 525 | |
| 526 | base = resource->base; |
| 527 | end = resource_end(resource); |
| 528 | buf[0] = '\0'; |
| 529 | |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 530 | if (dev->downstream && (resource->flags & IORESOURCE_PCI_BRIDGE)) { |
Elyes HAOUAS | b748221 | 2018-05-16 12:58:19 +0200 | [diff] [blame] | 531 | snprintf(buf, sizeof(buf), |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 532 | "seg %02x bus %02x ", dev->downstream->segment_group, |
| 533 | dev->downstream->secondary); |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 534 | } |
Gang Chen | cfb90fd | 2022-07-02 01:24:09 +0800 | [diff] [blame] | 535 | printk(BIOS_DEBUG, "%s %02lx <- [0x%016llx - 0x%016llx] size 0x%08llx " |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 536 | "gran 0x%02x %s%s%s\n", dev_path(dev), resource->index, |
| 537 | base, end, resource->size, resource->gran, buf, |
| 538 | resource_type(resource), comment); |
Eric Biederman | 03acab6 | 2004-10-14 21:25:53 +0000 | [diff] [blame] | 539 | } |
Eric Biederman | f8a2ddd | 2004-10-30 08:05:41 +0000 | [diff] [blame] | 540 | |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 541 | void search_bus_resources(struct bus *bus, unsigned long type_mask, |
| 542 | unsigned long type, resource_search_t search, |
| 543 | void *gp) |
Eric Biederman | f8a2ddd | 2004-10-30 08:05:41 +0000 | [diff] [blame] | 544 | { |
| 545 | struct device *curdev; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 546 | |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 547 | for (curdev = bus->children; curdev; curdev = curdev->sibling) { |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 548 | struct resource *res; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 549 | |
| 550 | /* Ignore disabled devices. */ |
| 551 | if (!curdev->enabled) |
| 552 | continue; |
| 553 | |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 554 | for (res = curdev->resource_list; res; res = res->next) { |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 555 | /* If it isn't the right kind of resource ignore it. */ |
| 556 | if ((res->flags & type_mask) != type) |
Eric Biederman | f8a2ddd | 2004-10-30 08:05:41 +0000 | [diff] [blame] | 557 | continue; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 558 | |
| 559 | /* If it is a subtractive resource recurse. */ |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 560 | if (res->flags & IORESOURCE_SUBTRACTIVE) { |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 561 | if (curdev->downstream) |
| 562 | search_bus_resources(curdev->downstream, type_mask, type, |
Arthur Heymans | 80c79a5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 563 | search, gp); |
Eric Biederman | f8a2ddd | 2004-10-30 08:05:41 +0000 | [diff] [blame] | 564 | continue; |
| 565 | } |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 566 | search(gp, curdev, res); |
Eric Biederman | f8a2ddd | 2004-10-30 08:05:41 +0000 | [diff] [blame] | 567 | } |
| 568 | } |
| 569 | } |
| 570 | |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 571 | void search_global_resources(unsigned long type_mask, unsigned long type, |
| 572 | resource_search_t search, void *gp) |
Eric Biederman | f8a2ddd | 2004-10-30 08:05:41 +0000 | [diff] [blame] | 573 | { |
| 574 | struct device *curdev; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 575 | |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 576 | for (curdev = all_devices; curdev; curdev = curdev->next) { |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 577 | struct resource *res; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 578 | |
| 579 | /* Ignore disabled devices. */ |
| 580 | if (!curdev->enabled) |
| 581 | continue; |
| 582 | |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 583 | for (res = curdev->resource_list; res; res = res->next) { |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 584 | /* If it isn't the right kind of resource ignore it. */ |
| 585 | if ((res->flags & type_mask) != type) |
Eric Biederman | f8a2ddd | 2004-10-30 08:05:41 +0000 | [diff] [blame] | 586 | continue; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 587 | |
| 588 | /* If it is a subtractive resource ignore it. */ |
| 589 | if (res->flags & IORESOURCE_SUBTRACTIVE) |
Eric Biederman | f8a2ddd | 2004-10-30 08:05:41 +0000 | [diff] [blame] | 590 | continue; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 591 | |
Shuo Liu | 0640c28 | 2022-08-02 01:50:36 +0800 | [diff] [blame] | 592 | /* If the resource is not assigned ignore it. */ |
| 593 | if (!(res->flags & IORESOURCE_ASSIGNED)) |
| 594 | continue; |
| 595 | |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 596 | search(gp, curdev, res); |
Eric Biederman | f8a2ddd | 2004-10-30 08:05:41 +0000 | [diff] [blame] | 597 | } |
| 598 | } |
| 599 | } |
Yinghai Lu | 13f1c2a | 2005-07-08 02:49:49 +0000 | [diff] [blame] | 600 | |
Aaron Durbin | f034902 | 2017-11-10 10:47:54 -0700 | [diff] [blame] | 601 | void dev_set_enabled(struct device *dev, int enable) |
Yinghai Lu | 13f1c2a | 2005-07-08 02:49:49 +0000 | [diff] [blame] | 602 | { |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 603 | if (dev->enabled == enable) |
Yinghai Lu | 13f1c2a | 2005-07-08 02:49:49 +0000 | [diff] [blame] | 604 | return; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 605 | |
Yinghai Lu | 13f1c2a | 2005-07-08 02:49:49 +0000 | [diff] [blame] | 606 | dev->enabled = enable; |
Frans Hendriks | a9caa50 | 2021-02-01 11:44:37 +0100 | [diff] [blame] | 607 | if (dev->ops && dev->ops->enable) |
Yinghai Lu | 13f1c2a | 2005-07-08 02:49:49 +0000 | [diff] [blame] | 608 | dev->ops->enable(dev); |
Frans Hendriks | a9caa50 | 2021-02-01 11:44:37 +0100 | [diff] [blame] | 609 | else if (dev->chip_ops && dev->chip_ops->enable_dev) |
Yinghai Lu | 13f1c2a | 2005-07-08 02:49:49 +0000 | [diff] [blame] | 610 | dev->chip_ops->enable_dev(dev); |
Yinghai Lu | 13f1c2a | 2005-07-08 02:49:49 +0000 | [diff] [blame] | 611 | } |
| 612 | |
| 613 | void disable_children(struct bus *bus) |
| 614 | { |
Aaron Durbin | f034902 | 2017-11-10 10:47:54 -0700 | [diff] [blame] | 615 | struct device *child; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 616 | |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 617 | for (child = bus->children; child; child = child->sibling) { |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 618 | if (child->downstream) |
| 619 | disable_children(child->downstream); |
Yinghai Lu | 13f1c2a | 2005-07-08 02:49:49 +0000 | [diff] [blame] | 620 | dev_set_enabled(child, 0); |
| 621 | } |
| 622 | } |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 623 | |
Patrick Rudolph | a6909f8 | 2017-05-22 18:30:27 +0200 | [diff] [blame] | 624 | /* |
| 625 | * Returns true if the device is an enabled bridge that has at least |
Patrick Rudolph | bd7739f | 2019-04-24 09:35:51 +0200 | [diff] [blame] | 626 | * one enabled device on its secondary bus that is not of type NONE. |
Patrick Rudolph | a6909f8 | 2017-05-22 18:30:27 +0200 | [diff] [blame] | 627 | */ |
Aaron Durbin | f034902 | 2017-11-10 10:47:54 -0700 | [diff] [blame] | 628 | bool dev_is_active_bridge(struct device *dev) |
Patrick Rudolph | a6909f8 | 2017-05-22 18:30:27 +0200 | [diff] [blame] | 629 | { |
Aaron Durbin | f034902 | 2017-11-10 10:47:54 -0700 | [diff] [blame] | 630 | struct device *child; |
Patrick Rudolph | a6909f8 | 2017-05-22 18:30:27 +0200 | [diff] [blame] | 631 | |
| 632 | if (!dev || !dev->enabled) |
| 633 | return 0; |
| 634 | |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 635 | if (!dev->downstream || !dev->downstream->children) |
Patrick Rudolph | a6909f8 | 2017-05-22 18:30:27 +0200 | [diff] [blame] | 636 | return 0; |
| 637 | |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 638 | for (child = dev->downstream->children; child; child = child->sibling) { |
Arthur Heymans | 80c79a5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 639 | if (child->path.type == DEVICE_PATH_NONE) |
| 640 | continue; |
| 641 | if (child->enabled) |
| 642 | return 1; |
Patrick Rudolph | a6909f8 | 2017-05-22 18:30:27 +0200 | [diff] [blame] | 643 | } |
| 644 | |
| 645 | return 0; |
| 646 | } |
| 647 | |
Lubomir Rintel | 9ba8f7c | 2018-04-26 00:00:22 +0200 | [diff] [blame] | 648 | static void resource_tree(const struct device *root, int debug_level, int depth) |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 649 | { |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 650 | int i = 0; |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 651 | struct device *child; |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 652 | struct resource *res; |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 653 | char indent[30]; /* If your tree has more levels, it's wrong. */ |
| 654 | |
| 655 | for (i = 0; i < depth + 1 && i < 29; i++) |
| 656 | indent[i] = ' '; |
| 657 | indent[i] = '\0'; |
| 658 | |
Nico Huber | 7cc14ac | 2021-03-27 20:03:02 +0100 | [diff] [blame] | 659 | printk(BIOS_DEBUG, "%s%s", indent, dev_path(root)); |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 660 | if (root->downstream && root->downstream->children) |
Nico Huber | 7cc14ac | 2021-03-27 20:03:02 +0100 | [diff] [blame] | 661 | printk(BIOS_DEBUG, " child on link 0 %s", |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 662 | dev_path(root->downstream->children)); |
Nico Huber | 7cc14ac | 2021-03-27 20:03:02 +0100 | [diff] [blame] | 663 | printk(BIOS_DEBUG, "\n"); |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 664 | |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 665 | for (res = root->resource_list; res; res = res->next) { |
Nico Huber | 7cc14ac | 2021-03-27 20:03:02 +0100 | [diff] [blame] | 666 | printk(debug_level, "%s%s resource base %llx size %llx " |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 667 | "align %d gran %d limit %llx flags %lx index %lx\n", |
| 668 | indent, dev_path(root), res->base, res->size, |
| 669 | res->align, res->gran, res->limit, res->flags, |
| 670 | res->index); |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 671 | } |
| 672 | |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 673 | if (!root->downstream) |
Arthur Heymans | 80c79a5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 674 | return; |
| 675 | |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 676 | for (child = root->downstream->children; child; child = child->sibling) |
Arthur Heymans | 80c79a5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 677 | resource_tree(child, debug_level, depth + 1); |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 678 | } |
| 679 | |
Elyes HAOUAS | e348066 | 2018-05-06 20:32:23 +0200 | [diff] [blame] | 680 | void print_resource_tree(const struct device *root, int debug_level, |
| 681 | const char *msg) |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 682 | { |
| 683 | /* Bail if root is null. */ |
| 684 | if (!root) { |
Nico Huber | 7cc14ac | 2021-03-27 20:03:02 +0100 | [diff] [blame] | 685 | printk(debug_level, "%s passed NULL for root!\n", __func__); |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 686 | return; |
| 687 | } |
| 688 | |
| 689 | /* Bail if not printing to screen. */ |
Nico Huber | 7cc14ac | 2021-03-27 20:03:02 +0100 | [diff] [blame] | 690 | if (!printk(debug_level, "Show resources in subtree (%s)...%s\n", |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 691 | dev_path(root), msg)) |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 692 | return; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 693 | |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 694 | resource_tree(root, debug_level, 0); |
| 695 | } |
| 696 | |
Lubomir Rintel | 9ba8f7c | 2018-04-26 00:00:22 +0200 | [diff] [blame] | 697 | void show_devs_tree(const struct device *dev, int debug_level, int depth) |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 698 | { |
Marcelo Povoa | 8404dca | 2014-02-14 15:42:49 -0800 | [diff] [blame] | 699 | char depth_str[20]; |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 700 | int i; |
| 701 | struct device *sibling; |
Myles Watson | 894a347 | 2010-06-09 22:41:35 +0000 | [diff] [blame] | 702 | |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 703 | for (i = 0; i < depth; i++) |
| 704 | depth_str[i] = ' '; |
| 705 | depth_str[i] = '\0'; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 706 | |
Nico Huber | 7cc14ac | 2021-03-27 20:03:02 +0100 | [diff] [blame] | 707 | printk(debug_level, "%s%s: enabled %d\n", |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 708 | depth_str, dev_path(dev), dev->enabled); |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 709 | |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 710 | if (!dev->downstream) |
Arthur Heymans | 80c79a5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 711 | return; |
| 712 | |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 713 | for (sibling = dev->downstream->children; sibling; sibling = sibling->sibling) |
Arthur Heymans | 80c79a5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 714 | show_devs_tree(sibling, debug_level, depth + 1); |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 715 | } |
| 716 | |
| 717 | void show_all_devs_tree(int debug_level, const char *msg) |
| 718 | { |
| 719 | /* Bail if not printing to screen. */ |
Nico Huber | 7cc14ac | 2021-03-27 20:03:02 +0100 | [diff] [blame] | 720 | if (!printk(debug_level, "Show all devs in tree form... %s\n", msg)) |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 721 | return; |
Kyösti Mälkki | 3d3c8c3 | 2016-08-15 10:04:21 +0300 | [diff] [blame] | 722 | show_devs_tree(all_devices, debug_level, 0); |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 723 | } |
| 724 | |
| 725 | void show_devs_subtree(struct device *root, int debug_level, const char *msg) |
| 726 | { |
| 727 | /* Bail if not printing to screen. */ |
Nico Huber | 7cc14ac | 2021-03-27 20:03:02 +0100 | [diff] [blame] | 728 | if (!printk(debug_level, "Show all devs in subtree %s... %s\n", |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 729 | dev_path(root), msg)) |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 730 | return; |
Nico Huber | 7cc14ac | 2021-03-27 20:03:02 +0100 | [diff] [blame] | 731 | printk(debug_level, "%s\n", msg); |
Kyösti Mälkki | 3d3c8c3 | 2016-08-15 10:04:21 +0300 | [diff] [blame] | 732 | show_devs_tree(root, debug_level, 0); |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 733 | } |
| 734 | |
| 735 | void show_all_devs(int debug_level, const char *msg) |
| 736 | { |
| 737 | struct device *dev; |
| 738 | |
| 739 | /* Bail if not printing to screen. */ |
Nico Huber | 7cc14ac | 2021-03-27 20:03:02 +0100 | [diff] [blame] | 740 | if (!printk(debug_level, "Show all devs... %s\n", msg)) |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 741 | return; |
| 742 | for (dev = all_devices; dev; dev = dev->next) { |
Nico Huber | 7cc14ac | 2021-03-27 20:03:02 +0100 | [diff] [blame] | 743 | printk(debug_level, "%s: enabled %d\n", |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 744 | dev_path(dev), dev->enabled); |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 745 | } |
| 746 | } |
| 747 | |
| 748 | void show_one_resource(int debug_level, struct device *dev, |
| 749 | struct resource *resource, const char *comment) |
| 750 | { |
| 751 | char buf[10]; |
| 752 | unsigned long long base, end; |
| 753 | base = resource->base; |
| 754 | end = resource_end(resource); |
| 755 | buf[0] = '\0'; |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 756 | |
Gang Chen | cfb90fd | 2022-07-02 01:24:09 +0800 | [diff] [blame] | 757 | printk(debug_level, "%s %02lx <- [0x%016llx - 0x%016llx] " |
Patrick Georgi | 5161509 | 2012-03-11 19:31:03 +0100 | [diff] [blame] | 758 | "size 0x%08llx gran 0x%02x %s%s%s\n", dev_path(dev), |
Uwe Hermann | e487047 | 2010-11-04 23:23:47 +0000 | [diff] [blame] | 759 | resource->index, base, end, resource->size, resource->gran, |
| 760 | buf, resource_type(resource), comment); |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 761 | } |
| 762 | |
Frans Hendriks | a9caa50 | 2021-02-01 11:44:37 +0100 | [diff] [blame] | 763 | void show_all_devs_resources(int debug_level, const char *msg) |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 764 | { |
| 765 | struct device *dev; |
| 766 | |
Nico Huber | 7cc14ac | 2021-03-27 20:03:02 +0100 | [diff] [blame] | 767 | if (!printk(debug_level, "Show all devs with resources... %s\n", msg)) |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 768 | return; |
| 769 | |
| 770 | for (dev = all_devices; dev; dev = dev->next) { |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 771 | struct resource *res; |
Nico Huber | 7cc14ac | 2021-03-27 20:03:02 +0100 | [diff] [blame] | 772 | printk(debug_level, "%s: enabled %d\n", |
Myles Watson | c25cc11 | 2010-05-21 14:33:48 +0000 | [diff] [blame] | 773 | dev_path(dev), dev->enabled); |
| 774 | for (res = dev->resource_list; res; res = res->next) |
| 775 | show_one_resource(debug_level, dev, res, ""); |
Myles Watson | bb3d812 | 2009-05-11 22:45:35 +0000 | [diff] [blame] | 776 | } |
| 777 | } |
Uwe Hermann | 4b42a62 | 2010-10-11 19:36:13 +0000 | [diff] [blame] | 778 | |
Shuo Liu | 6c708d8 | 2024-04-29 18:16:30 +0800 | [diff] [blame^] | 779 | const struct resource *resource_range_idx(struct device *dev, unsigned long index, |
Kyösti Mälkki | ce34596 | 2021-06-11 19:31:22 +0300 | [diff] [blame] | 780 | uint64_t base, uint64_t size, unsigned long flags) |
Uwe Hermann | 4b42a62 | 2010-10-11 19:36:13 +0000 | [diff] [blame] | 781 | { |
| 782 | struct resource *resource; |
Kyösti Mälkki | ce34596 | 2021-06-11 19:31:22 +0300 | [diff] [blame] | 783 | if (!size) |
| 784 | return NULL; |
Uwe Hermann | 4b42a62 | 2010-10-11 19:36:13 +0000 | [diff] [blame] | 785 | |
| 786 | resource = new_resource(dev, index); |
Kyösti Mälkki | ce34596 | 2021-06-11 19:31:22 +0300 | [diff] [blame] | 787 | resource->base = base; |
Shuo Liu | 6c708d8 | 2024-04-29 18:16:30 +0800 | [diff] [blame^] | 788 | |
| 789 | if (flags & IORESOURCE_FIXED) |
| 790 | resource->size = size; |
| 791 | if (flags & IORESOURCE_BRIDGE) |
| 792 | resource->limit = base + size - 1; |
| 793 | |
| 794 | resource->flags = IORESOURCE_ASSIGNED; |
Kyösti Mälkki | ce34596 | 2021-06-11 19:31:22 +0300 | [diff] [blame] | 795 | resource->flags |= flags; |
Uwe Hermann | 4b42a62 | 2010-10-11 19:36:13 +0000 | [diff] [blame] | 796 | |
Kyösti Mälkki | ce34596 | 2021-06-11 19:31:22 +0300 | [diff] [blame] | 797 | printk(BIOS_SPEW, "dev: %s, index: 0x%lx, base: 0x%llx, size: 0x%llx\n", |
| 798 | dev_path(dev), resource->index, resource->base, resource->size); |
| 799 | |
| 800 | return resource; |
Kyösti Mälkki | 63f8c08 | 2012-07-10 13:27:26 +0300 | [diff] [blame] | 801 | } |
| 802 | |
Kyösti Mälkki | d0525d4 | 2021-06-13 10:09:51 +0300 | [diff] [blame] | 803 | const struct resource *lower_ram_end(struct device *dev, unsigned long index, uint64_t end) |
| 804 | { |
| 805 | return ram_from_to(dev, index, 0, end); |
| 806 | } |
| 807 | |
| 808 | const struct resource *upper_ram_end(struct device *dev, unsigned long index, uint64_t end) |
| 809 | { |
| 810 | if (end <= 4ull * GiB) |
| 811 | return NULL; |
| 812 | |
| 813 | printk(BIOS_INFO, "Available memory above 4GB: %lluM\n", (end - 4ull * GiB) / MiB); |
| 814 | |
| 815 | return ram_from_to(dev, index, 4ull * GiB, end); |
| 816 | } |
| 817 | |
Angel Pons | 90be754 | 2021-01-20 13:03:58 +0100 | [diff] [blame] | 818 | void mmconf_resource(struct device *dev, unsigned long index) |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 819 | { |
Angel Pons | 90be754 | 2021-01-20 13:03:58 +0100 | [diff] [blame] | 820 | struct resource *resource = new_resource(dev, index); |
Shelley Chen | 4e9bb33 | 2021-10-20 15:43:45 -0700 | [diff] [blame] | 821 | resource->base = CONFIG_ECAM_MMCONF_BASE_ADDRESS; |
| 822 | resource->size = CONFIG_ECAM_MMCONF_LENGTH; |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 823 | resource->flags = IORESOURCE_MEM | IORESOURCE_RESERVE | |
| 824 | IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED; |
| 825 | |
Angel Pons | d19cc11 | 2021-07-04 11:41:31 +0200 | [diff] [blame] | 826 | printk(BIOS_DEBUG, "Adding PCIe enhanced config space BAR 0x%08lx-0x%08lx.\n", |
| 827 | (unsigned long)(resource->base), |
Kyösti Mälkki | e25b5ef | 2016-12-02 08:56:05 +0200 | [diff] [blame] | 828 | (unsigned long)(resource->base + resource->size)); |
| 829 | } |
| 830 | |
Uwe Hermann | 4b42a62 | 2010-10-11 19:36:13 +0000 | [diff] [blame] | 831 | void tolm_test(void *gp, struct device *dev, struct resource *new) |
| 832 | { |
| 833 | struct resource **best_p = gp; |
| 834 | struct resource *best; |
| 835 | |
| 836 | best = *best_p; |
| 837 | |
Furquan Shaikh | afaae8a | 2020-05-18 16:00:53 -0700 | [diff] [blame] | 838 | /* |
| 839 | * If resource is not allocated any space i.e. size is zero, |
| 840 | * then do not consider this resource in tolm calculations. |
| 841 | */ |
| 842 | if (new->size == 0) |
| 843 | return; |
| 844 | |
Uwe Hermann | 4b42a62 | 2010-10-11 19:36:13 +0000 | [diff] [blame] | 845 | if (!best || (best->base > new->base)) |
| 846 | best = new; |
| 847 | |
| 848 | *best_p = best; |
| 849 | } |
| 850 | |
| 851 | u32 find_pci_tolm(struct bus *bus) |
| 852 | { |
| 853 | struct resource *min = NULL; |
| 854 | u32 tolm; |
Furquan Shaikh | afaae8a | 2020-05-18 16:00:53 -0700 | [diff] [blame] | 855 | unsigned long mask_match = IORESOURCE_MEM | IORESOURCE_ASSIGNED; |
Uwe Hermann | 4b42a62 | 2010-10-11 19:36:13 +0000 | [diff] [blame] | 856 | |
Furquan Shaikh | afaae8a | 2020-05-18 16:00:53 -0700 | [diff] [blame] | 857 | search_bus_resources(bus, mask_match, mask_match, tolm_test, &min); |
Uwe Hermann | 4b42a62 | 2010-10-11 19:36:13 +0000 | [diff] [blame] | 858 | |
| 859 | tolm = 0xffffffffUL; |
| 860 | |
| 861 | if (min && tolm > min->base) |
| 862 | tolm = min->base; |
| 863 | |
| 864 | return tolm; |
| 865 | } |
Stefan Reinauer | dc8448fd | 2012-03-30 13:52:58 -0700 | [diff] [blame] | 866 | |
| 867 | /* Count of enabled CPUs */ |
| 868 | int dev_count_cpu(void) |
| 869 | { |
Aaron Durbin | f034902 | 2017-11-10 10:47:54 -0700 | [diff] [blame] | 870 | struct device *cpu; |
Stefan Reinauer | dc8448fd | 2012-03-30 13:52:58 -0700 | [diff] [blame] | 871 | int count = 0; |
| 872 | |
| 873 | for (cpu = all_devices; cpu; cpu = cpu->next) { |
Fabio Aiuto | 45aae7f | 2022-09-23 16:51:34 +0200 | [diff] [blame] | 874 | if (!is_enabled_cpu(cpu)) |
Stefan Reinauer | dc8448fd | 2012-03-30 13:52:58 -0700 | [diff] [blame] | 875 | continue; |
| 876 | count++; |
| 877 | } |
| 878 | |
| 879 | return count; |
| 880 | } |
Lee Leahy | a95baf9 | 2016-02-13 06:10:04 -0800 | [diff] [blame] | 881 | |
| 882 | /* Get device path name */ |
| 883 | const char *dev_path_name(enum device_path_type type) |
| 884 | { |
| 885 | static const char *const type_names[] = DEVICE_PATH_NAMES; |
| 886 | const char *type_name = "Unknown"; |
| 887 | |
| 888 | /* Translate the type value into a string */ |
| 889 | if (type < ARRAY_SIZE(type_names)) |
| 890 | type_name = type_names[type]; |
| 891 | return type_name; |
| 892 | } |
Kyösti Mälkki | 68e6dc9 | 2021-06-14 00:40:22 +0300 | [diff] [blame] | 893 | |
Nico Huber | 577c6b9 | 2022-08-15 00:08:58 +0200 | [diff] [blame] | 894 | bool dev_path_hotplug(const struct device *dev) |
| 895 | { |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 896 | for (dev = dev->upstream->dev; dev != dev->upstream->dev; dev = dev->upstream->dev) { |
Nico Huber | 577c6b9 | 2022-08-15 00:08:58 +0200 | [diff] [blame] | 897 | if (dev->hotplug_port) |
| 898 | return true; |
| 899 | } |
| 900 | return false; |
| 901 | } |
| 902 | |
Kyösti Mälkki | 68e6dc9 | 2021-06-14 00:40:22 +0300 | [diff] [blame] | 903 | void log_resource(const char *type, const struct device *dev, const struct resource *res, |
| 904 | const char *srcfile, const int line) |
| 905 | { |
| 906 | printk(BIOS_SPEW, "%s:%d res: %s, dev: %s, index: 0x%lx, base: 0x%llx, " |
| 907 | "end: 0x%llx, size_kb: 0x%llx\n", |
| 908 | srcfile, line, type, dev_path(dev), res->index, res->base, |
| 909 | resource_end(res), res->size / KiB); |
| 910 | } |
Fabio Aiuto | c5573d6 | 2022-09-10 14:23:38 +0200 | [diff] [blame] | 911 | |
| 912 | bool is_cpu(const struct device *cpu) |
| 913 | { |
| 914 | return cpu->path.type == DEVICE_PATH_APIC && |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 915 | cpu->upstream->dev->path.type == DEVICE_PATH_CPU_CLUSTER; |
Fabio Aiuto | c5573d6 | 2022-09-10 14:23:38 +0200 | [diff] [blame] | 916 | } |
| 917 | |
| 918 | bool is_enabled_cpu(const struct device *cpu) |
| 919 | { |
| 920 | return is_cpu(cpu) && cpu->enabled; |
| 921 | } |
Fabio Aiuto | 4fce79f | 2022-09-30 11:22:09 +0200 | [diff] [blame] | 922 | |
| 923 | bool is_pci(const struct device *pci) |
| 924 | { |
| 925 | return pci->path.type == DEVICE_PATH_PCI; |
| 926 | } |
| 927 | |
| 928 | bool is_enabled_pci(const struct device *pci) |
| 929 | { |
| 930 | return is_pci(pci) && pci->enabled; |
| 931 | } |
| 932 | |
| 933 | bool is_pci_dev_on_bus(const struct device *pci, unsigned int bus) |
| 934 | { |
Arthur Heymans | 7fcd4d5 | 2023-08-24 15:12:19 +0200 | [diff] [blame] | 935 | return is_pci(pci) && pci->upstream->segment_group == 0 |
| 936 | && pci->upstream->secondary == bus; |
Fabio Aiuto | 4fce79f | 2022-09-30 11:22:09 +0200 | [diff] [blame] | 937 | } |
Shuo Liu | 0f3316b | 2024-03-30 00:37:55 +0800 | [diff] [blame] | 938 | |
| 939 | bool is_pci_bridge(const struct device *pci) |
| 940 | { |
| 941 | return is_pci(pci) && ((pci->hdr_type & 0x7f) == PCI_HEADER_TYPE_BRIDGE); |
| 942 | } |