| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <commonlib/bsd/helpers.h> |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <device/path.h> |
| #include <device/pci_def.h> |
| #include <device/resource.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <types.h> |
| |
| /** |
| * Given a Local APIC ID, find the device structure. |
| * |
| * @param apic_id The Local APIC ID number. |
| * @return Pointer to the device structure (if found), 0 otherwise. |
| */ |
| struct device *dev_find_lapic(unsigned int apic_id) |
| { |
| struct device *dev; |
| struct device *result = NULL; |
| |
| for (dev = all_devices; dev; dev = dev->next) { |
| if (dev->path.type == DEVICE_PATH_APIC && |
| dev->path.apic.apic_id == apic_id) { |
| result = dev; |
| break; |
| } |
| } |
| return result; |
| } |
| |
| /** |
| * Find a device of a given vendor and type. |
| * |
| * @param vendor A PCI vendor ID (e.g. 0x8086 for Intel). |
| * @param device A PCI device ID. |
| * @param from Pointer to the device structure, used as a starting point in |
| * the linked list of all_devices, which can be 0 to start at the |
| * head of the list (i.e. all_devices). |
| * @return Pointer to the device struct. |
| */ |
| struct device *dev_find_device(u16 vendor, u16 device, struct device *from) |
| { |
| if (!from) |
| from = all_devices; |
| else |
| from = from->next; |
| |
| while (from && (from->vendor != vendor || from->device != device)) |
| from = from->next; |
| |
| return from; |
| } |
| |
| /** |
| * Find a device of a given class. |
| * |
| * @param class Class of the device. |
| * @param from Pointer to the device structure, used as a starting point in |
| * the linked list of all_devices, which can be 0 to start at the |
| * head of the list (i.e. all_devices). |
| * @return Pointer to the device struct. |
| */ |
| struct device *dev_find_class(unsigned int class, struct device *from) |
| { |
| if (!from) |
| from = all_devices; |
| else |
| from = from->next; |
| |
| while (from && (from->class & 0xffffff00) != class) |
| from = from->next; |
| |
| return from; |
| } |
| |
| /** |
| * Encode the device path into 3 bytes for logging to CMOS. |
| * |
| * @param dev The device path to encode. |
| * @return Device path encoded into lower 3 bytes of dword. |
| */ |
| u32 dev_path_encode(const struct device *dev) |
| { |
| u32 ret; |
| |
| if (!dev) |
| return 0; |
| |
| /* Store the device type in 3rd byte. */ |
| ret = dev->path.type << 16; |
| |
| /* Encode the device specific path in the low word. */ |
| switch (dev->path.type) { |
| case DEVICE_PATH_ROOT: |
| break; |
| case DEVICE_PATH_PCI: |
| ret |= dev->bus->segment_group << 16 | dev->bus->secondary << 8 | dev->path.pci.devfn; |
| break; |
| case DEVICE_PATH_PNP: |
| ret |= dev->path.pnp.port << 8 | dev->path.pnp.device; |
| break; |
| case DEVICE_PATH_I2C: |
| ret |= dev->path.i2c.mode_10bit << 8 | dev->path.i2c.device; |
| break; |
| case DEVICE_PATH_APIC: |
| ret |= dev->path.apic.apic_id; |
| break; |
| case DEVICE_PATH_DOMAIN: |
| ret |= dev->path.domain.domain; |
| break; |
| case DEVICE_PATH_CPU_CLUSTER: |
| ret |= dev->path.cpu_cluster.cluster; |
| break; |
| case DEVICE_PATH_CPU: |
| ret |= dev->path.cpu.id; |
| break; |
| case DEVICE_PATH_CPU_BUS: |
| ret |= dev->path.cpu_bus.id; |
| break; |
| case DEVICE_PATH_IOAPIC: |
| ret |= dev->path.ioapic.ioapic_id; |
| break; |
| case DEVICE_PATH_GENERIC: |
| ret |= dev->path.generic.subid << 8 | dev->path.generic.id; |
| break; |
| case DEVICE_PATH_SPI: |
| ret |= dev->path.spi.cs; |
| break; |
| case DEVICE_PATH_USB: |
| ret |= dev->path.usb.port_type << 8 | dev->path.usb.port_id; |
| break; |
| case DEVICE_PATH_GPIO: |
| ret |= dev->path.gpio.id; |
| break; |
| case DEVICE_PATH_MDIO: |
| ret |= dev->path.mdio.addr; |
| break; |
| case DEVICE_PATH_NONE: |
| case DEVICE_PATH_MMIO: /* don't care */ |
| default: |
| break; |
| } |
| |
| return ret; |
| } |
| |
| /* |
| * Warning: This function uses a static buffer. Don't call it more than once |
| * from the same print statement! |
| */ |
| const char *dev_path(const struct device *dev) |
| { |
| static char buffer[DEVICE_PATH_MAX]; |
| |
| buffer[0] = '\0'; |
| if (!dev) { |
| strcpy(buffer, "<null>"); |
| } else { |
| switch (dev->path.type) { |
| case DEVICE_PATH_NONE: |
| strcpy(buffer, "NONE"); |
| break; |
| case DEVICE_PATH_ROOT: |
| strcpy(buffer, "Root Device"); |
| break; |
| case DEVICE_PATH_PCI: |
| snprintf(buffer, sizeof(buffer), |
| "PCI: %02x:%02x:%02x.%01x", |
| dev->bus->segment_group, |
| dev->bus->secondary, |
| PCI_SLOT(dev->path.pci.devfn), |
| PCI_FUNC(dev->path.pci.devfn)); |
| break; |
| case DEVICE_PATH_PNP: |
| snprintf(buffer, sizeof(buffer), "PNP: %04x.%01x", |
| dev->path.pnp.port, dev->path.pnp.device); |
| break; |
| case DEVICE_PATH_I2C: |
| snprintf(buffer, sizeof(buffer), "I2C: %02x:%02x", |
| dev->bus->secondary, |
| dev->path.i2c.device); |
| break; |
| case DEVICE_PATH_APIC: |
| snprintf(buffer, sizeof(buffer), "APIC: %02x", |
| dev->path.apic.apic_id); |
| break; |
| case DEVICE_PATH_IOAPIC: |
| snprintf(buffer, sizeof(buffer), "IOAPIC: %02x", |
| dev->path.ioapic.ioapic_id); |
| break; |
| case DEVICE_PATH_DOMAIN: |
| snprintf(buffer, sizeof(buffer), "DOMAIN: %08x", |
| dev->path.domain.domain); |
| break; |
| case DEVICE_PATH_CPU_CLUSTER: |
| snprintf(buffer, sizeof(buffer), "CPU_CLUSTER: %01x", |
| dev->path.cpu_cluster.cluster); |
| break; |
| case DEVICE_PATH_CPU: |
| snprintf(buffer, sizeof(buffer), |
| "CPU: %02x", dev->path.cpu.id); |
| break; |
| case DEVICE_PATH_CPU_BUS: |
| snprintf(buffer, sizeof(buffer), |
| "CPU_BUS: %02x", dev->path.cpu_bus.id); |
| break; |
| case DEVICE_PATH_GENERIC: |
| snprintf(buffer, sizeof(buffer), |
| "GENERIC: %d.%d", dev->path.generic.id, |
| dev->path.generic.subid); |
| break; |
| case DEVICE_PATH_SPI: |
| snprintf(buffer, sizeof(buffer), "SPI: %02x", |
| dev->path.spi.cs); |
| break; |
| case DEVICE_PATH_USB: |
| snprintf(buffer, sizeof(buffer), "USB%u port %u", |
| dev->path.usb.port_type, dev->path.usb.port_id); |
| break; |
| case DEVICE_PATH_MMIO: |
| snprintf(buffer, sizeof(buffer), "MMIO: %08lx", |
| dev->path.mmio.addr); |
| break; |
| case DEVICE_PATH_GPIO: |
| snprintf(buffer, sizeof(buffer), "GPIO: %d", dev->path.gpio.id); |
| break; |
| case DEVICE_PATH_MDIO: |
| snprintf(buffer, sizeof(buffer), "MDIO: %02x", dev->path.mdio.addr); |
| break; |
| default: |
| printk(BIOS_ERR, "Unknown device path type: %d\n", |
| dev->path.type); |
| break; |
| } |
| } |
| return buffer; |
| } |
| |
| const char *dev_name(const struct device *dev) |
| { |
| if (dev->name) |
| return dev->name; |
| else if (dev->chip_ops && dev->chip_ops->name) |
| return dev->chip_ops->name; |
| else |
| return "unknown"; |
| } |
| |
| /** |
| * Allocate 64 more resources to the free list. |
| * |
| * @return TODO. |
| */ |
| static int allocate_more_resources(void) |
| { |
| int i; |
| struct resource *new_res_list; |
| |
| new_res_list = malloc(64 * sizeof(*new_res_list)); |
| |
| if (new_res_list == NULL) |
| return 0; |
| |
| memset(new_res_list, 0, 64 * sizeof(*new_res_list)); |
| |
| for (i = 0; i < 64 - 1; i++) |
| new_res_list[i].next = &new_res_list[i+1]; |
| |
| free_resources = new_res_list; |
| return 1; |
| } |
| |
| /** |
| * Remove resource res from the device's list and add it to the free list. |
| * |
| * @param dev TODO |
| * @param res TODO |
| * @param prev TODO |
| * @return TODO. |
| */ |
| static void free_resource(struct device *dev, struct resource *res, |
| struct resource *prev) |
| { |
| if (prev) |
| prev->next = res->next; |
| else |
| dev->resource_list = res->next; |
| |
| res->next = free_resources; |
| free_resources = res; |
| } |
| |
| /** |
| * See if we have unused but allocated resource structures. |
| * |
| * If so remove the allocation. |
| * |
| * @param dev The device to find the resource on. |
| */ |
| void compact_resources(struct device *dev) |
| { |
| struct resource *res, *next, *prev = NULL; |
| |
| /* Move all of the free resources to the end */ |
| for (res = dev->resource_list; res; res = next) { |
| next = res->next; |
| if (!res->flags) |
| free_resource(dev, res, prev); |
| else |
| prev = res; |
| } |
| } |
| |
| /** |
| * See if a resource structure already exists for a given index. |
| * |
| * @param dev The device to find the resource on. |
| * @param index The index of the resource on the device. |
| * @return The resource, if it already exists. |
| */ |
| struct resource *probe_resource(const struct device *dev, unsigned int index) |
| { |
| struct resource *res; |
| |
| /* See if there is a resource with the appropriate index */ |
| for (res = dev->resource_list; res; res = res->next) { |
| if (res->index == index) |
| break; |
| } |
| |
| return res; |
| } |
| |
| /** |
| * See if a resource structure already exists for a given index and if not |
| * allocate one. |
| * |
| * Then initialize the resource to default values. |
| * |
| * @param dev The device to find the resource on. |
| * @param index The index of the resource on the device. |
| * @return TODO. |
| */ |
| struct resource *new_resource(struct device *dev, unsigned int index) |
| { |
| struct resource *resource, *tail; |
| |
| /* First move all of the free resources to the end. */ |
| compact_resources(dev); |
| |
| /* See if there is a resource with the appropriate index. */ |
| resource = probe_resource(dev, index); |
| if (!resource) { |
| if (free_resources == NULL && !allocate_more_resources()) |
| die("Couldn't allocate more resources."); |
| |
| resource = free_resources; |
| free_resources = free_resources->next; |
| memset(resource, 0, sizeof(*resource)); |
| resource->next = NULL; |
| tail = dev->resource_list; |
| if (tail) { |
| while (tail->next) |
| tail = tail->next; |
| tail->next = resource; |
| } else { |
| dev->resource_list = resource; |
| } |
| } |
| |
| /* Initialize the resource values. */ |
| if (!(resource->flags & IORESOURCE_FIXED)) { |
| resource->flags = 0; |
| resource->base = 0; |
| } |
| resource->size = 0; |
| resource->limit = 0; |
| resource->index = index; |
| resource->align = 0; |
| resource->gran = 0; |
| |
| return resource; |
| } |
| |
| /** |
| * Return an existing resource structure for a given index. |
| * |
| * @param dev The device to find the resource on. |
| * @param index The index of the resource on the device. |
| * return TODO. |
| */ |
| struct resource *find_resource(const struct device *dev, unsigned int index) |
| { |
| struct resource *resource; |
| |
| /* See if there is a resource with the appropriate index. */ |
| resource = probe_resource(dev, index); |
| if (!resource) |
| die("%s missing resource: %02x\n", dev_path(dev), index); |
| return resource; |
| } |
| |
| /** |
| * Round a number up to the next multiple of gran. |
| * |
| * @param val The starting value. |
| * @param gran Granularity we are aligning the number to. |
| * @return The aligned value. |
| */ |
| static resource_t align_up(resource_t val, unsigned long gran) |
| { |
| resource_t mask; |
| mask = (1ULL << gran) - 1ULL; |
| val += mask; |
| val &= ~mask; |
| return val; |
| } |
| |
| /** |
| * Round a number up to the previous multiple of gran. |
| * |
| * @param val The starting value. |
| * @param gran Granularity we are aligning the number to. |
| * @return The aligned value. |
| */ |
| static resource_t align_down(resource_t val, unsigned long gran) |
| { |
| resource_t mask; |
| mask = (1ULL << gran) - 1ULL; |
| val &= ~mask; |
| return val; |
| } |
| |
| /** |
| * Compute the maximum address that is part of a resource. |
| * |
| * @param resource The resource whose limit is desired. |
| * @return The end. |
| */ |
| resource_t resource_end(const struct resource *resource) |
| { |
| resource_t base, end; |
| |
| /* Get the base address. */ |
| base = resource->base; |
| |
| /* |
| * For a non bridge resource granularity and alignment are the same. |
| * For a bridge resource align is the largest needed alignment below |
| * the bridge. While the granularity is simply how many low bits of |
| * the address cannot be set. |
| */ |
| |
| /* Get the end (rounded up). */ |
| end = base + align_up(resource->size, resource->gran) - 1; |
| |
| return end; |
| } |
| |
| /** |
| * Compute the maximum legal value for resource->base. |
| * |
| * @param resource The resource whose maximum is desired. |
| * @return The maximum. |
| */ |
| resource_t resource_max(const struct resource *resource) |
| { |
| resource_t max; |
| |
| max = align_down(resource->limit - resource->size + 1, resource->align); |
| |
| return max; |
| } |
| |
| /** |
| * Return the resource type of a resource. |
| * |
| * @param resource The resource type to decode. |
| * @return TODO. |
| */ |
| const char *resource_type(const struct resource *resource) |
| { |
| static char buffer[RESOURCE_TYPE_MAX]; |
| snprintf(buffer, sizeof(buffer), "%s%s%s%s", |
| ((resource->flags & IORESOURCE_READONLY) ? "ro" : ""), |
| ((resource->flags & IORESOURCE_PREFETCH) ? "pref" : ""), |
| ((resource->flags == 0) ? "unused" : |
| (resource->flags & IORESOURCE_IO) ? "io" : |
| (resource->flags & IORESOURCE_DRQ) ? "drq" : |
| (resource->flags & IORESOURCE_IRQ) ? "irq" : |
| (resource->flags & IORESOURCE_MEM) ? "mem" : "??????"), |
| ((resource->flags & IORESOURCE_PCI64) ? "64" : "")); |
| return buffer; |
| } |
| |
| /** |
| * Print the resource that was just stored. |
| * |
| * @param dev The device the stored resource lives on. |
| * @param resource The resource that was just stored. |
| * @param comment TODO |
| */ |
| void report_resource_stored(struct device *dev, const struct resource *resource, |
| const char *comment) |
| { |
| char buf[10]; |
| unsigned long long base, end; |
| |
| if (!(resource->flags & IORESOURCE_STORED)) |
| return; |
| |
| base = resource->base; |
| end = resource_end(resource); |
| buf[0] = '\0'; |
| |
| if (dev->link_list && (resource->flags & IORESOURCE_PCI_BRIDGE)) { |
| snprintf(buf, sizeof(buf), |
| "seg %02x bus %02x ", dev->link_list->segment_group, |
| dev->link_list->secondary); |
| } |
| printk(BIOS_DEBUG, "%s %02lx <- [0x%016llx - 0x%016llx] size 0x%08llx " |
| "gran 0x%02x %s%s%s\n", dev_path(dev), resource->index, |
| base, end, resource->size, resource->gran, buf, |
| resource_type(resource), comment); |
| } |
| |
| void search_bus_resources(struct bus *bus, unsigned long type_mask, |
| unsigned long type, resource_search_t search, |
| void *gp) |
| { |
| struct device *curdev; |
| |
| for (curdev = bus->children; curdev; curdev = curdev->sibling) { |
| struct resource *res; |
| |
| /* Ignore disabled devices. */ |
| if (!curdev->enabled) |
| continue; |
| |
| for (res = curdev->resource_list; res; res = res->next) { |
| /* If it isn't the right kind of resource ignore it. */ |
| if ((res->flags & type_mask) != type) |
| continue; |
| |
| /* If it is a subtractive resource recurse. */ |
| if (res->flags & IORESOURCE_SUBTRACTIVE) { |
| struct bus *subbus; |
| for (subbus = curdev->link_list; subbus; |
| subbus = subbus->next) |
| if (subbus->link_num |
| == IOINDEX_SUBTRACTIVE_LINK(res->index)) |
| break; |
| if (!subbus) /* Why can subbus be NULL? */ |
| break; |
| search_bus_resources(subbus, type_mask, type, |
| search, gp); |
| continue; |
| } |
| search(gp, curdev, res); |
| } |
| } |
| } |
| |
| void search_global_resources(unsigned long type_mask, unsigned long type, |
| resource_search_t search, void *gp) |
| { |
| struct device *curdev; |
| |
| for (curdev = all_devices; curdev; curdev = curdev->next) { |
| struct resource *res; |
| |
| /* Ignore disabled devices. */ |
| if (!curdev->enabled) |
| continue; |
| |
| for (res = curdev->resource_list; res; res = res->next) { |
| /* If it isn't the right kind of resource ignore it. */ |
| if ((res->flags & type_mask) != type) |
| continue; |
| |
| /* If it is a subtractive resource ignore it. */ |
| if (res->flags & IORESOURCE_SUBTRACTIVE) |
| continue; |
| |
| /* If the resource is not assigned ignore it. */ |
| if (!(res->flags & IORESOURCE_ASSIGNED)) |
| continue; |
| |
| search(gp, curdev, res); |
| } |
| } |
| } |
| |
| void dev_set_enabled(struct device *dev, int enable) |
| { |
| if (dev->enabled == enable) |
| return; |
| |
| dev->enabled = enable; |
| if (dev->ops && dev->ops->enable) |
| dev->ops->enable(dev); |
| else if (dev->chip_ops && dev->chip_ops->enable_dev) |
| dev->chip_ops->enable_dev(dev); |
| } |
| |
| void disable_children(struct bus *bus) |
| { |
| struct device *child; |
| |
| for (child = bus->children; child; child = child->sibling) { |
| struct bus *link; |
| for (link = child->link_list; link; link = link->next) |
| disable_children(link); |
| dev_set_enabled(child, 0); |
| } |
| } |
| |
| /* |
| * Returns true if the device is an enabled bridge that has at least |
| * one enabled device on its secondary bus that is not of type NONE. |
| */ |
| bool dev_is_active_bridge(struct device *dev) |
| { |
| struct bus *link; |
| struct device *child; |
| |
| if (!dev || !dev->enabled) |
| return 0; |
| |
| if (!dev->link_list || !dev->link_list->children) |
| return 0; |
| |
| for (link = dev->link_list; link; link = link->next) { |
| for (child = link->children; child; child = child->sibling) { |
| if (child->path.type == DEVICE_PATH_NONE) |
| continue; |
| |
| if (child->enabled) |
| return 1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * Ensure the device has a minimum number of bus links. |
| * |
| * @param dev The device to add links to. |
| * @param total_links The minimum number of links to have. |
| */ |
| void add_more_links(struct device *dev, unsigned int total_links) |
| { |
| struct bus *link, *last = NULL; |
| int link_num = -1; |
| |
| for (link = dev->link_list; link; link = link->next) { |
| if (link_num < link->link_num) |
| link_num = link->link_num; |
| last = link; |
| } |
| |
| if (last) { |
| int links = total_links - (link_num + 1); |
| if (links > 0) { |
| link = malloc(links * sizeof(*link)); |
| if (!link) |
| die("Couldn't allocate more links!\n"); |
| memset(link, 0, links * sizeof(*link)); |
| last->next = link; |
| } else { |
| /* No more links to add */ |
| return; |
| } |
| } else { |
| link = malloc(total_links * sizeof(*link)); |
| if (!link) |
| die("Couldn't allocate more links!\n"); |
| memset(link, 0, total_links * sizeof(*link)); |
| dev->link_list = link; |
| } |
| |
| for (link_num = link_num + 1; link_num < total_links; link_num++) { |
| link->link_num = link_num; |
| link->dev = dev; |
| link->next = link + 1; |
| last = link; |
| link = link->next; |
| } |
| last->next = NULL; |
| } |
| |
| static void resource_tree(const struct device *root, int debug_level, int depth) |
| { |
| int i = 0; |
| struct device *child; |
| struct bus *link; |
| struct resource *res; |
| char indent[30]; /* If your tree has more levels, it's wrong. */ |
| |
| for (i = 0; i < depth + 1 && i < 29; i++) |
| indent[i] = ' '; |
| indent[i] = '\0'; |
| |
| printk(BIOS_DEBUG, "%s%s", indent, dev_path(root)); |
| if (root->link_list && root->link_list->children) |
| printk(BIOS_DEBUG, " child on link 0 %s", |
| dev_path(root->link_list->children)); |
| printk(BIOS_DEBUG, "\n"); |
| |
| for (res = root->resource_list; res; res = res->next) { |
| printk(debug_level, "%s%s resource base %llx size %llx " |
| "align %d gran %d limit %llx flags %lx index %lx\n", |
| indent, dev_path(root), res->base, res->size, |
| res->align, res->gran, res->limit, res->flags, |
| res->index); |
| } |
| |
| for (link = root->link_list; link; link = link->next) { |
| for (child = link->children; child; child = child->sibling) |
| resource_tree(child, debug_level, depth + 1); |
| } |
| } |
| |
| void print_resource_tree(const struct device *root, int debug_level, |
| const char *msg) |
| { |
| /* Bail if root is null. */ |
| if (!root) { |
| printk(debug_level, "%s passed NULL for root!\n", __func__); |
| return; |
| } |
| |
| /* Bail if not printing to screen. */ |
| if (!printk(debug_level, "Show resources in subtree (%s)...%s\n", |
| dev_path(root), msg)) |
| return; |
| |
| resource_tree(root, debug_level, 0); |
| } |
| |
| void show_devs_tree(const struct device *dev, int debug_level, int depth) |
| { |
| char depth_str[20]; |
| int i; |
| struct device *sibling; |
| struct bus *link; |
| |
| for (i = 0; i < depth; i++) |
| depth_str[i] = ' '; |
| depth_str[i] = '\0'; |
| |
| printk(debug_level, "%s%s: enabled %d\n", |
| depth_str, dev_path(dev), dev->enabled); |
| |
| for (link = dev->link_list; link; link = link->next) { |
| for (sibling = link->children; sibling; |
| sibling = sibling->sibling) |
| show_devs_tree(sibling, debug_level, depth + 1); |
| } |
| } |
| |
| void show_all_devs_tree(int debug_level, const char *msg) |
| { |
| /* Bail if not printing to screen. */ |
| if (!printk(debug_level, "Show all devs in tree form... %s\n", msg)) |
| return; |
| show_devs_tree(all_devices, debug_level, 0); |
| } |
| |
| void show_devs_subtree(struct device *root, int debug_level, const char *msg) |
| { |
| /* Bail if not printing to screen. */ |
| if (!printk(debug_level, "Show all devs in subtree %s... %s\n", |
| dev_path(root), msg)) |
| return; |
| printk(debug_level, "%s\n", msg); |
| show_devs_tree(root, debug_level, 0); |
| } |
| |
| void show_all_devs(int debug_level, const char *msg) |
| { |
| struct device *dev; |
| |
| /* Bail if not printing to screen. */ |
| if (!printk(debug_level, "Show all devs... %s\n", msg)) |
| return; |
| for (dev = all_devices; dev; dev = dev->next) { |
| printk(debug_level, "%s: enabled %d\n", |
| dev_path(dev), dev->enabled); |
| } |
| } |
| |
| void show_one_resource(int debug_level, struct device *dev, |
| struct resource *resource, const char *comment) |
| { |
| char buf[10]; |
| unsigned long long base, end; |
| base = resource->base; |
| end = resource_end(resource); |
| buf[0] = '\0'; |
| |
| printk(debug_level, "%s %02lx <- [0x%016llx - 0x%016llx] " |
| "size 0x%08llx gran 0x%02x %s%s%s\n", dev_path(dev), |
| resource->index, base, end, resource->size, resource->gran, |
| buf, resource_type(resource), comment); |
| } |
| |
| void show_all_devs_resources(int debug_level, const char *msg) |
| { |
| struct device *dev; |
| |
| if (!printk(debug_level, "Show all devs with resources... %s\n", msg)) |
| return; |
| |
| for (dev = all_devices; dev; dev = dev->next) { |
| struct resource *res; |
| printk(debug_level, "%s: enabled %d\n", |
| dev_path(dev), dev->enabled); |
| for (res = dev->resource_list; res; res = res->next) |
| show_one_resource(debug_level, dev, res, ""); |
| } |
| } |
| |
| const struct resource *fixed_resource_range_idx(struct device *dev, unsigned long index, |
| uint64_t base, uint64_t size, unsigned long flags) |
| { |
| struct resource *resource; |
| if (!size) |
| return NULL; |
| |
| resource = new_resource(dev, index); |
| resource->base = base; |
| resource->size = size; |
| resource->flags = IORESOURCE_FIXED | IORESOURCE_ASSIGNED; |
| resource->flags |= flags; |
| |
| printk(BIOS_SPEW, "dev: %s, index: 0x%lx, base: 0x%llx, size: 0x%llx\n", |
| dev_path(dev), resource->index, resource->base, resource->size); |
| |
| return resource; |
| } |
| |
| const struct resource *lower_ram_end(struct device *dev, unsigned long index, uint64_t end) |
| { |
| return ram_from_to(dev, index, 0, end); |
| } |
| |
| const struct resource *upper_ram_end(struct device *dev, unsigned long index, uint64_t end) |
| { |
| if (end <= 4ull * GiB) |
| return NULL; |
| |
| printk(BIOS_INFO, "Available memory above 4GB: %lluM\n", (end - 4ull * GiB) / MiB); |
| |
| return ram_from_to(dev, index, 4ull * GiB, end); |
| } |
| |
| void mmconf_resource(struct device *dev, unsigned long index) |
| { |
| struct resource *resource = new_resource(dev, index); |
| resource->base = CONFIG_ECAM_MMCONF_BASE_ADDRESS; |
| resource->size = CONFIG_ECAM_MMCONF_LENGTH; |
| resource->flags = IORESOURCE_MEM | IORESOURCE_RESERVE | |
| IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED; |
| |
| printk(BIOS_DEBUG, "Adding PCIe enhanced config space BAR 0x%08lx-0x%08lx.\n", |
| (unsigned long)(resource->base), |
| (unsigned long)(resource->base + resource->size)); |
| } |
| |
| void tolm_test(void *gp, struct device *dev, struct resource *new) |
| { |
| struct resource **best_p = gp; |
| struct resource *best; |
| |
| best = *best_p; |
| |
| /* |
| * If resource is not allocated any space i.e. size is zero, |
| * then do not consider this resource in tolm calculations. |
| */ |
| if (new->size == 0) |
| return; |
| |
| if (!best || (best->base > new->base)) |
| best = new; |
| |
| *best_p = best; |
| } |
| |
| u32 find_pci_tolm(struct bus *bus) |
| { |
| struct resource *min = NULL; |
| u32 tolm; |
| unsigned long mask_match = IORESOURCE_MEM | IORESOURCE_ASSIGNED; |
| |
| search_bus_resources(bus, mask_match, mask_match, tolm_test, &min); |
| |
| tolm = 0xffffffffUL; |
| |
| if (min && tolm > min->base) |
| tolm = min->base; |
| |
| return tolm; |
| } |
| |
| /* Count of enabled CPUs */ |
| int dev_count_cpu(void) |
| { |
| struct device *cpu; |
| int count = 0; |
| |
| for (cpu = all_devices; cpu; cpu = cpu->next) { |
| if (!is_enabled_cpu(cpu)) |
| continue; |
| count++; |
| } |
| |
| return count; |
| } |
| |
| /* Get device path name */ |
| const char *dev_path_name(enum device_path_type type) |
| { |
| static const char *const type_names[] = DEVICE_PATH_NAMES; |
| const char *type_name = "Unknown"; |
| |
| /* Translate the type value into a string */ |
| if (type < ARRAY_SIZE(type_names)) |
| type_name = type_names[type]; |
| return type_name; |
| } |
| |
| bool dev_path_hotplug(const struct device *dev) |
| { |
| for (dev = dev->bus->dev; dev != dev->bus->dev; dev = dev->bus->dev) { |
| if (dev->hotplug_port) |
| return true; |
| } |
| return false; |
| } |
| |
| void log_resource(const char *type, const struct device *dev, const struct resource *res, |
| const char *srcfile, const int line) |
| { |
| printk(BIOS_SPEW, "%s:%d res: %s, dev: %s, index: 0x%lx, base: 0x%llx, " |
| "end: 0x%llx, size_kb: 0x%llx\n", |
| srcfile, line, type, dev_path(dev), res->index, res->base, |
| resource_end(res), res->size / KiB); |
| } |
| |
| bool is_cpu(const struct device *cpu) |
| { |
| return cpu->path.type == DEVICE_PATH_APIC && |
| cpu->bus->dev->path.type == DEVICE_PATH_CPU_CLUSTER; |
| } |
| |
| bool is_enabled_cpu(const struct device *cpu) |
| { |
| return is_cpu(cpu) && cpu->enabled; |
| } |
| |
| bool is_pci(const struct device *pci) |
| { |
| return pci->path.type == DEVICE_PATH_PCI; |
| } |
| |
| bool is_enabled_pci(const struct device *pci) |
| { |
| return is_pci(pci) && pci->enabled; |
| } |
| |
| bool is_pci_dev_on_bus(const struct device *pci, unsigned int bus) |
| { |
| return is_pci(pci) && pci->bus->segment_group == 0 && pci->bus->secondary == bus; |
| } |