| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2003-2004 Linux Networx |
| * (Written by Eric Biederman <ebiederman@lnxi.com> for Linux Networx) |
| * Copyright (C) 2003 Greg Watson <jarrah@users.sourceforge.net> |
| * Copyright (C) 2004 Li-Ta Lo <ollie@lanl.gov> |
| * Copyright (C) 2005-2006 Tyan |
| * (Written by Yinghai Lu <yhlu@tyan.com> for Tyan) |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <device/path.h> |
| #include <device/pci_def.h> |
| #include <device/resource.h> |
| #include <string.h> |
| |
| /** |
| * See if a device structure exists for path. |
| * |
| * @param parent The bus to find the device on. |
| * @param path The relative path from the bus to the appropriate device. |
| * @return Pointer to a device structure for the device on bus at path |
| * or 0/NULL if no device is found. |
| */ |
| device_t find_dev_path(struct bus *parent, struct device_path *path) |
| { |
| device_t child; |
| for (child = parent->children; child; child = child->sibling) { |
| if (path_eq(path, &child->path)) |
| break; |
| } |
| return child; |
| } |
| |
| /** |
| * Given a PCI bus and a devfn number, find the device structure. |
| * |
| * @param bus The bus number. |
| * @param devfn A device/function number. |
| * @return Pointer to the device structure (if found), 0 otherwise. |
| */ |
| struct device *dev_find_slot(unsigned int bus, unsigned int devfn) |
| { |
| struct device *dev, *result; |
| |
| result = 0; |
| for (dev = all_devices; dev; dev = dev->next) { |
| if ((dev->path.type == DEVICE_PATH_PCI) && |
| (dev->bus->secondary == bus) && |
| (dev->path.pci.devfn == devfn)) { |
| result = dev; |
| break; |
| } |
| } |
| return result; |
| } |
| |
| /** |
| * Given an SMBus bus and a device number, find the device structure. |
| * |
| * @param bus The bus number. |
| * @param addr A device number. |
| * @return Pointer to the device structure (if found), 0 otherwise. |
| */ |
| struct device *dev_find_slot_on_smbus(unsigned int bus, unsigned int addr) |
| { |
| struct device *dev, *result; |
| |
| result = 0; |
| for (dev = all_devices; dev; dev = dev->next) { |
| if ((dev->path.type == DEVICE_PATH_I2C) && |
| (dev->bus->secondary == bus) && |
| (dev->path.i2c.device == addr)) { |
| result = dev; |
| break; |
| } |
| } |
| return result; |
| } |
| |
| /** |
| * Given a PnP port and a device number, find the device structure. |
| * |
| * @param port The I/O port. |
| * @param device Logical device number. |
| * @return Pointer to the device structure (if found), 0 otherwise. |
| */ |
| struct device *dev_find_slot_pnp(u16 port, u16 device) |
| { |
| struct device *dev; |
| |
| for (dev = all_devices; dev; dev = dev->next) { |
| if ((dev->path.type == DEVICE_PATH_PNP) && |
| (dev->path.pnp.port == port) && |
| (dev->path.pnp.device == device)) { |
| return dev; |
| } |
| } |
| return 0; |
| } |
| |
| /** |
| * 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. |
| */ |
| device_t dev_find_lapic(unsigned apic_id) |
| { |
| device_t dev, 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(device_t 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->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->bus->secondary << 8 | dev->path.pnp.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_NONE: |
| 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(device_t dev) |
| { |
| static char buffer[DEVICE_PATH_MAX]; |
| |
| buffer[0] = '\0'; |
| if (!dev) { |
| memcpy(buffer, "<null>", 7); |
| } else { |
| switch(dev->path.type) { |
| case DEVICE_PATH_ROOT: |
| memcpy(buffer, "Root Device", 12); |
| break; |
| case DEVICE_PATH_PCI: |
| #if CONFIG_PCI_BUS_SEGN_BITS |
| snprintf(buffer, sizeof (buffer), |
| "PCI: %04x:%02x:%02x.%01x", |
| dev->bus->secondary >> 8, |
| dev->bus->secondary & 0xff, |
| PCI_SLOT(dev->path.pci.devfn), |
| PCI_FUNC(dev->path.pci.devfn)); |
| #else |
| snprintf(buffer, sizeof (buffer), |
| "PCI: %02x:%02x.%01x", |
| dev->bus->secondary, |
| PCI_SLOT(dev->path.pci.devfn), |
| PCI_FUNC(dev->path.pci.devfn)); |
| #endif |
| 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: %04x", |
| 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; |
| default: |
| printk(BIOS_ERR, "Unknown device path type: %d\n", |
| dev->path.type); |
| break; |
| } |
| } |
| return buffer; |
| } |
| |
| const char *dev_name(device_t dev) |
| { |
| if (dev->name) |
| return dev->name; |
| else if (dev->chip_ops && dev->chip_ops->name) |
| return dev->chip_ops->name; |
| else |
| return "unknown"; |
| } |
| |
| const char *bus_path(struct bus *bus) |
| { |
| static char buffer[BUS_PATH_MAX]; |
| snprintf(buffer, sizeof (buffer), |
| "%s,%d", dev_path(bus->dev), bus->link_num); |
| return buffer; |
| } |
| |
| int path_eq(struct device_path *path1, struct device_path *path2) |
| { |
| int equal = 0; |
| |
| if (path1->type != path2->type) |
| return 0; |
| |
| switch (path1->type) { |
| case DEVICE_PATH_NONE: |
| break; |
| case DEVICE_PATH_ROOT: |
| equal = 1; |
| break; |
| case DEVICE_PATH_PCI: |
| equal = (path1->pci.devfn == path2->pci.devfn); |
| break; |
| case DEVICE_PATH_PNP: |
| equal = (path1->pnp.port == path2->pnp.port) && |
| (path1->pnp.device == path2->pnp.device); |
| break; |
| case DEVICE_PATH_I2C: |
| equal = (path1->i2c.device == path2->i2c.device); |
| break; |
| case DEVICE_PATH_APIC: |
| equal = (path1->apic.apic_id == path2->apic.apic_id); |
| break; |
| case DEVICE_PATH_DOMAIN: |
| equal = (path1->domain.domain == path2->domain.domain); |
| break; |
| case DEVICE_PATH_CPU_CLUSTER: |
| equal = (path1->cpu_cluster.cluster |
| == path2->cpu_cluster.cluster); |
| break; |
| case DEVICE_PATH_CPU: |
| equal = (path1->cpu.id == path2->cpu.id); |
| break; |
| case DEVICE_PATH_CPU_BUS: |
| equal = (path1->cpu_bus.id == path2->cpu_bus.id); |
| break; |
| default: |
| printk(BIOS_ERR, "Unknown device type: %d\n", path1->type); |
| break; |
| } |
| |
| return equal; |
| } |
| |
| /** |
| * 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(device_t 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(device_t 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(device_t dev, unsigned 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(device_t dev, unsigned 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(device_t dev, unsigned index) |
| { |
| struct resource *resource; |
| |
| /* See if there is a resource with the appropriate index. */ |
| resource = probe_resource(dev, index); |
| if (!resource) { |
| printk(BIOS_EMERG, "%s missing resource: %02x\n", |
| dev_path(dev), index); |
| die(""); |
| } |
| 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(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(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(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(device_t dev, 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 (resource->flags & IORESOURCE_PCI_BRIDGE) { |
| #if CONFIG_PCI_BUS_SEGN_BITS |
| snprintf(buf, sizeof (buf), |
| "bus %04x:%02x ", dev->bus->secondary >> 8, |
| dev->link_list->secondary & 0xff); |
| #else |
| snprintf(buf, sizeof (buf), |
| "bus %02x ", dev->link_list->secondary); |
| #endif |
| } |
| printk(BIOS_DEBUG, "%s %02lx <- [0x%010llx - 0x%010llx] 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; |
| |
| search(gp, curdev, res); |
| } |
| } |
| } |
| |
| void dev_set_enabled(device_t 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) |
| { |
| device_t 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); |
| } |
| } |
| |
| static void resource_tree(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'; |
| |
| do_printk(BIOS_DEBUG, "%s%s", indent, dev_path(root)); |
| if (root->link_list && root->link_list->children) |
| do_printk(BIOS_DEBUG, " child on link 0 %s", |
| dev_path(root->link_list->children)); |
| do_printk(BIOS_DEBUG, "\n"); |
| |
| for (res = root->resource_list; res; res = res->next) { |
| do_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(struct device *root, int debug_level, const char *msg) |
| { |
| /* Bail if root is null. */ |
| if (!root) { |
| do_printk(debug_level, "%s passed NULL for root!\n", __func__); |
| return; |
| } |
| |
| /* Bail if not printing to screen. */ |
| if (!do_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(struct device *dev, int debug_level, int depth, int linknum) |
| { |
| 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'; |
| |
| do_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, i); |
| } |
| } |
| |
| void show_all_devs_tree(int debug_level, const char *msg) |
| { |
| /* Bail if not printing to screen. */ |
| if (!do_printk(debug_level, "Show all devs in tree form... %s\n", msg)) |
| return; |
| show_devs_tree(all_devices, debug_level, 0, -1); |
| } |
| |
| void show_devs_subtree(struct device *root, int debug_level, const char *msg) |
| { |
| /* Bail if not printing to screen. */ |
| if (!do_printk(debug_level, "Show all devs in subtree %s... %s\n", |
| dev_path(root), msg)) |
| return; |
| do_printk(debug_level, "%s\n", msg); |
| show_devs_tree(root, debug_level, 0, -1); |
| } |
| |
| void show_all_devs(int debug_level, const char *msg) |
| { |
| struct device *dev; |
| |
| /* Bail if not printing to screen. */ |
| if (!do_printk(debug_level, "Show all devs... %s\n", msg)) |
| return; |
| for (dev = all_devices; dev; dev = dev->next) { |
| do_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'; |
| |
| /* |
| if (resource->flags & IORESOURCE_BRIDGE) { |
| #if CONFIG_PCI_BUS_SEGN_BITS |
| snprintf(buf, sizeof (buf), "bus %04x:%02x ", |
| dev->bus->secondary >> 8, |
| dev->link[0].secondary & 0xff); |
| #else |
| snprintf(buf, sizeof (buf), |
| "bus %02x ", dev->link[0].secondary); |
| #endif |
| } |
| */ |
| |
| do_printk(debug_level, "%s %02lx <- [0x%010llx - 0x%010llx] " |
| "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 (!do_printk(debug_level, "Show all devs with resources... %s\n", msg)) |
| return; |
| |
| for (dev = all_devices; dev; dev = dev->next) { |
| struct resource *res; |
| do_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, ""); |
| } |
| } |
| |
| void fixed_mem_resource(device_t dev, unsigned long index, |
| unsigned long basek, unsigned long sizek, unsigned long type) |
| { |
| struct resource *resource; |
| |
| if (!sizek) |
| return; |
| |
| resource = new_resource(dev, index); |
| resource->base = ((resource_t)basek) << 10; |
| resource->size = ((resource_t)sizek) << 10; |
| resource->flags = IORESOURCE_MEM | IORESOURCE_FIXED | |
| IORESOURCE_STORED | IORESOURCE_ASSIGNED; |
| |
| resource->flags |= type; |
| } |
| |
| void tolm_test(void *gp, struct device *dev, struct resource *new) |
| { |
| struct resource **best_p = gp; |
| struct resource *best; |
| |
| best = *best_p; |
| |
| if (!best || (best->base > new->base)) |
| best = new; |
| |
| *best_p = best; |
| } |
| |
| u32 find_pci_tolm(struct bus *bus) |
| { |
| struct resource *min = NULL; |
| u32 tolm; |
| |
| search_bus_resources(bus, IORESOURCE_MEM, IORESOURCE_MEM, |
| tolm_test, &min); |
| |
| tolm = 0xffffffffUL; |
| |
| if (min && tolm > min->base) |
| tolm = min->base; |
| |
| return tolm; |
| } |
| |
| /* Count of enabled CPUs */ |
| int dev_count_cpu(void) |
| { |
| device_t cpu; |
| int count = 0; |
| |
| for (cpu = all_devices; cpu; cpu = cpu->next) { |
| if ((cpu->path.type != DEVICE_PATH_APIC) || |
| (cpu->bus->dev->path.type != DEVICE_PATH_CPU_CLUSTER)) |
| continue; |
| if (!cpu->enabled) |
| continue; |
| count++; |
| } |
| |
| return count; |
| } |