/** Linked list of free resources */
struct resource *free_resources = NULL;
+DECLARE_SPIN_LOCK(dev_lock)
/**
- * @brief Allocate a new device structure.
+ * Allocate a new device structure.
*
- * Allocte a new device structure and attached it to the device tree as a
+ * Allocte a new device structure and attach it to the device tree as a
* child of the parent bus.
*
- * @param parent parent bus the newly created device attached to.
- * @param path path to the device to be created.
- *
- * @return pointer to the newly created device structure.
+ * @param parent Parent bus the newly created device should be attached to.
+ * @param path Path to the device to be created.
+ * @return Pointer to the newly created device structure.
*
* @see device_path
*/
-
-DECLARE_SPIN_LOCK(dev_lock)
-
device_t alloc_dev(struct bus *parent, struct device_path *path)
{
device_t dev, child;
}
/**
- * @brief round a number up to an alignment.
- * @param val the starting value
- * @param roundup Alignment as a power of two
- * @returns rounded up number
+ * Round a number up to an alignment.
+ *
+ * @param val The starting value.
+ * @param roundup Alignment as a power of two.
+ * @return Rounded up number.
*/
static resource_t round(resource_t val, unsigned long pow)
{
return val;
}
-/** Read the resources on all devices of a given bus.
- * @param bus bus to read the resources on.
+/**
+ * Read the resources on all devices of a given bus.
+ *
+ * @param bus Bus to read the resources on.
*/
static void read_resources(struct bus *bus)
{
struct device *curdev;
- printk(BIOS_SPEW, "%s %s bus %x link: %d\n", dev_path(bus->dev), __func__,
- bus->secondary, bus->link_num);
+ printk(BIOS_SPEW, "%s %s bus %x link: %d\n", dev_path(bus->dev),
+ __func__, bus->secondary, bus->link_num);
/* Walk through all devices and find which resources they need. */
for (curdev = bus->children; curdev; curdev = curdev->sibling) {
return state.result_dev;
}
-/* Compute allocate resources is the guts of the resource allocator.
+/**
+ * Compute allocate resources is the guts of the resource allocator.
*
* The problem.
* - Allocate resource locations for every device.
* a device with a couple of resources, and not need to special case it in
* the allocator. Also this allows handling of other types of bridges.
*
+ * @param bus The bus we are traversing.
+ * @param bridge The bridge resource which must contain the bus' resources.
+ * @param type_mask This value gets ANDed with the resource type.
+ * @param type This value must match the result of the AND.
+ * @return TODO
*/
static void compute_resources(struct bus *bus, struct resource *bridge,
unsigned long type_mask, unsigned long type)
*
* @param bus The bus we are traversing.
* @param bridge The bridge resource which must contain the bus' resources.
- * @param type_mask This value gets anded with the resource type.
- * @param type This value must match the result of the and.
+ * @param type_mask This value gets ANDed with the resource type.
+ * @param type This value must match the result of the AND.
*/
static void allocate_resources(struct bus *bus, struct resource *bridge,
unsigned long type_mask, unsigned long type)
}
#if CONFIG_PCI_64BIT_PREF_MEM == 1
- #define MEM_MASK (IORESOURCE_PREFETCH | IORESOURCE_MEM)
+#define MEM_MASK (IORESOURCE_PREFETCH | IORESOURCE_MEM)
#else
- #define MEM_MASK (IORESOURCE_MEM)
+#define MEM_MASK (IORESOURCE_MEM)
#endif
+
#define IO_MASK (IORESOURCE_IO)
#define PREF_TYPE (IORESOURCE_PREFETCH | IORESOURCE_MEM)
#define MEM_TYPE (IORESOURCE_MEM)
#endif
/**
- * @brief Assign the computed resources to the devices on the bus.
- *
- * @param bus Pointer to the structure for this bus
+ * Assign the computed resources to the devices on the bus.
*
* Use the device specific set_resources method to store the computed
* resources to hardware. For bridge devices, the set_resources() method
* Mutual recursion:
* assign_resources() -> device_operation::set_resources()
* device_operation::set_resources() -> assign_resources()
+ *
+ * @param bus Pointer to the structure for this bus.
*/
void assign_resources(struct bus *bus)
{
}
/**
- * @brief Enable the resources for devices on a link
- *
- * @param link the link whose devices' resources are to be enabled
+ * Enable the resources for devices on a link.
*
* Enable resources of the device by calling the device specific
* enable_resources() method.
* order problem. This is done by calling the parent's enable_resources()
* method before its childrens' enable_resources() methods.
*
+ * @param link The link whose devices' resources are to be enabled.
*/
static void enable_resources(struct bus *link)
{
}
/**
- * @brief Reset all of the devices a bus
- *
* Reset all of the devices on a bus and clear the bus's reset_needed flag.
*
- * @param bus pointer to the bus structure
- *
+ * @param bus Pointer to the bus structure.
* @return 1 if the bus was successfully reset, 0 otherwise.
- *
*/
int reset_bus(struct bus *bus)
{
}
/**
- * @brief Scan for devices on a bus.
+ * Scan for devices on a bus.
*
* If there are bridges on the bus, recursively scan the buses behind the
* bridges. If the setting up and tuning of the bus causes a reset to be
}
/**
- * @brief Determine the existence of devices and extend the device tree.
+ * Determine the existence of devices and extend the device tree.
*
* Most of the devices in the system are listed in the mainboard Config.lb
* file. The device structures for these devices are generated at compile
}
/**
- * @brief Configure devices on the devices tree.
+ * Configure devices on the devices tree.
*
* Starting at the root of the device tree, travel it recursively in two
* passes. In the first pass, we compute and allocate resources (ranges)
}
/**
- * @brief Enable devices on the device tree.
+ * Enable devices on the device tree.
*
* Starting at the root, walk the tree and enable all devices/bridges by
* calling the device's enable_resources() method.
}
/**
- * @brief Initialize a specific device
- *
- * @param dev the device to be initialized
+ * Initialize a specific device.
*
* The parent should be initialized first to avoid having an ordering
* problem. This is done by calling the parent's init()
* method before its childrens' init() methods.
*
+ * @param dev The device to be initialized.
*/
static void init_dev(struct device *dev)
{
}
/**
- * @brief Initialize all devices in the global device tree.
+ * Initialize all devices in the global device tree.
*
- * Starting at the root device, call the device's init() method to do device-
- * specific setup, then call each child's init() method.
+ * Starting at the root device, call the device's init() method to do
+ * device-specific setup, then call each child's init() method.
*/
void dev_initialize(void)
{
#include <string.h>
/**
- * @brief See if a device structure exists for path
+ * See if a device structure exists for path.
*
- * @param bus 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
+ * @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)
{
}
/**
- * @brief See if a device structure already exists and if not allocate it
+ * See if a device structure already exists and if not allocate it.
*
- * @param bus 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
+ * @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.
*/
device_t alloc_find_dev(struct bus *parent, struct device_path *path)
{
}
/**
- * @brief Given a PCI bus and a devfn number, find the device structure
+ * 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
+ * @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)
{
}
/**
- * @brief Given a smbus bus and a device number, find the device structure
+ * 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
+ * @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)
{
return result;
}
-/** Find a device of a given vendor and type
- * @param vendor Vendor ID (e.g. 0x8086 for Intel)
- * @param device Device ID
+/**
+ * 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
+ * head of the list (i.e. all_devices).
+ * @return Pointer to the device struct.
*/
-struct device *dev_find_device(unsigned int vendor, unsigned int device, struct device *from)
+struct device *dev_find_device(unsigned int vendor, unsigned int device,
+ struct device *from)
{
if (!from)
from = all_devices;
return from;
}
-/** Find a device of a given class
- * @param class Class of the device
+/**
+ * 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
+ * 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)
{
return from;
}
-/* Warning: This function uses a static buffer. Don't call it more than once
- * from the same print statement! */
-
+/*
+ * 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);
/**
* Allocate 64 more resources to the free list.
+ *
+ * @return TODO.
*/
static int allocate_more_resources(void)
{
/**
* 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)
+static void free_resource(device_t dev, struct resource *res,
+ struct resource *prev)
{
if (prev)
prev->next = res->next;
/**
* See if we have unused but allocated resource structures.
* If so remove the allocation.
- * @param dev The device to find the resource on
+ *
+ * @param dev The device to find the resource on.
*/
void compact_resources(device_t dev)
{
}
}
-
/**
- * 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
+ * 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)
}
/**
- * See if a resource structure already exists for a given index and if
- * not allocate one. Then initialize the 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.
+ * See if a resource structure already exists for a given index and if not
+ * allocate one.
+ *
+ * Then initialize the 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)
{
/**
* 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.
+ *
+ * @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)
{
/**
- * @brief round a number up to the next multiple of gran
- * @param val the starting value
- * @param gran granularity we are aligning the number to.
- * @returns aligned value
+ * 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)
{
}
/**
- * @brief round a number up to the previous multiple of gran
- * @param val the starting value
- * @param gran granularity we are aligning the number to.
- * @returns aligned value
+ * 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)
{
}
/**
- * @brief Compute the maximum address that is part of a resource
- * @param resource the resource whose limit is desired
- * @returns the end
+ * 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)
{
}
/**
- * @brief Compute the maximum legal value for resource->base
- * @param resource the resource whose maximum is desired
- * @returns the maximum
+ * 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)
{
}
/**
- * @brief return the resource type of a resource
- * @param resource the resource type to decode.
+ * Return the resource type of a resource.
+ *
+ * @param resource The resource type to decode.
+ * @return TODO.
*/
const char *resource_type(struct resource *resource)
{
}
/**
- * @brief print the resource that was just stored.
- * @param dev the device the stored resorce lives on
- * @param resource the resource that was just stored.
+ * Print the resource that was just stored.
+ *
+ * @param dev The device the stored resorce 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)
+void report_resource_stored(device_t dev, struct resource *resource,
+ const char *comment)
{
if (resource->flags & IORESOURCE_STORED) {
char buf[10];
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
-/*
- 2005.11 yhlu add let the real sb to use small uintid
-*/
-
#include <bitops.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci_ids.h>
#include <device/hypertransport.h>
-/* The hypertransport link is already optimized in pre-ram code
- * so don't do it again
+/*
+ * The hypertransport link is already optimized in pre-RAM code so don't do
+ * it again.
*/
#define OPT_HT_LINK 0
}
return reset_needed;
-
}
static unsigned ht_lookup_slave_capability(struct device *dev)
}
/**
- * @brief Scan a PCI bridge and the buses behind the bridge.
+ * Scan a PCI bridge and the buses behind the bridge.
*
* Determine the existence of buses behind the bridge. Set up the bridge
* according to the result of the scan.
*
* This function is the default scan_bus() method for PCI bridge devices.
*
- * @param dev pointer to the bridge device
- * @param max the highest bus number assgined up to now
- *
- * @return The maximum bus number found, after scanning all subordinate busses
+ * @param bus TODO
+ * @param min_devfn TODO
+ * @param max_devfn TODO
+ * @param max The highest bus number assgined up to now.
+ * @return The maximum bus number found, after scanning all subordinate busses.
*/
static unsigned int hypertransport_scan_chain_x(struct bus *bus,
unsigned min_devfn, unsigned max_devfn, unsigned int max)
return do_pci_scan_bridge(dev, max, hypertransport_scan_chain_x);
}
-
/** Default device operations for hypertransport bridges */
static struct pci_operations ht_bus_ops_pci = {
.set_subsystem = 0,
* matching capability. Always start at the head of the list.
*
* @param dev Pointer to the device structure.
- * @param cap_type PCI_CAP_LIST_ID of the PCI capability we're looking for.
+ * @param cap PCI_CAP_LIST_ID of the PCI capability we're looking for.
* @param last Location of the PCI capability register to start from.
+ * @return The next matching capability.
*/
unsigned pci_find_next_capability(struct device *dev, unsigned cap,
unsigned last)
* capability. Always start at the head of the list.
*
* @param dev Pointer to the device structure.
- * @param cap_type PCI_CAP_LIST_ID of the PCI capability we're looking for.
+ * @param cap PCI_CAP_LIST_ID of the PCI capability we're looking for.
+ * @return The next matching capability.
*/
unsigned pci_find_capability(device_t dev, unsigned cap)
{
*
* @param dev Pointer to the device structure.
* @param index Address of the PCI configuration register.
+ * @return TODO
*/
struct resource *pci_get_resource(struct device *dev, unsigned long index)
{
/* See if the bridge I/O resources are implemented. */
moving_base = ((u32) pci_moving_config8(dev, PCI_IO_BASE)) << 8;
moving_base |=
- ((u32) pci_moving_config16(dev, PCI_IO_BASE_UPPER16)) << 16;
+ ((u32) pci_moving_config16(dev, PCI_IO_BASE_UPPER16)) << 16;
moving_limit = ((u32) pci_moving_config8(dev, PCI_IO_LIMIT)) << 8;
moving_limit |=
- ((u32) pci_moving_config16(dev, PCI_IO_LIMIT_UPPER16)) << 16;
+ ((u32) pci_moving_config16(dev, PCI_IO_LIMIT_UPPER16)) << 16;
moving = moving_base & moving_limit;
/* See if the bridge prefmem resources are implemented. */
moving_base =
- ((resource_t) pci_moving_config16(dev, PCI_PREF_MEMORY_BASE)) << 16;
+ ((resource_t) pci_moving_config16(dev, PCI_PREF_MEMORY_BASE)) << 16;
moving_base |=
- ((resource_t) pci_moving_config32(dev, PCI_PREF_BASE_UPPER32)) <<
- 32;
+ ((resource_t) pci_moving_config32(dev, PCI_PREF_BASE_UPPER32)) << 32;
moving_limit =
- ((resource_t) pci_moving_config16(dev, PCI_PREF_MEMORY_LIMIT)) <<
- 16;
+ ((resource_t) pci_moving_config16(dev, PCI_PREF_MEMORY_LIMIT)) << 16;
moving_limit |=
- ((resource_t) pci_moving_config32(dev, PCI_PREF_LIMIT_UPPER32)) <<
- 32;
+ ((resource_t) pci_moving_config32(dev, PCI_PREF_LIMIT_UPPER32)) << 32;
moving = moving_base & moving_limit;
/* Initialize the prefetchable memory constraints on the current bus. */
};
/**
- * @brief Detect the type of downstream bridge
+ * Detect the type of downstream bridge.
*
* This function is a heuristic to detect which type of bus is downstream
* of a PCI-to-PCI bridge. This functions by looking for various capability
}
/**
- * Set up PCI device operation. Check if it already has a driver. If not, use
- * find_device_operations, or set to a default based on type.
+ * Set up PCI device operation.
+ *
+ * Check if it already has a driver. If not, use find_device_operations(),
+ * or set to a default based on type.
*
* @param dev Pointer to the device whose pci_ops you want to set.
* @see pci_drivers
}
/**
- * @brief See if we have already allocated a device structure for a given devfn.
+ * See if we have already allocated a device structure for a given devfn.
*
* Given a linked list of PCI device structures and a devfn number, find the
* device structure correspond to the devfn, if present. This function also
*
* @param list The device structure list.
* @param devfn A device/function number.
- *
* @return Pointer to the device structure found or NULL if we have not
* allocated a device for this devfn yet.
*/
}
/**
- * @brief Scan a PCI bus.
+ * Scan a PCI bus.
*
* Determine the existence of a given PCI device. Allocate a new struct device
* if dev==NULL was passed in and the device exists in hardware.
*
- * @param bus pointer to the bus structure
- * @param devfn to look at
- *
- * @return The device structure for hte device (if found)
- * or the NULL if no device is found.
+ * @param dev Pointer to the dev structure.
+ * @param bus Pointer to the bus structure.
+ * @param devfn A device/function number to look at.
+ * @return The device structure for the device (if found), NULL otherwise.
*/
-device_t pci_probe_dev(device_t dev, struct bus * bus, unsigned devfn)
+device_t pci_probe_dev(device_t dev, struct bus *bus, unsigned devfn)
{
u32 id, class;
u8 hdr_type;
}
/**
- * @brief Scan a PCI bus.
+ * Scan a PCI bus.
*
* Determine the existence of devices and bridges on a PCI bus. If there are
* bridges on the bus, recursively scan the buses behind the bridges.
* This function is the default scan_bus() method for the root device
* 'dev_root'.
*
- * @param bus pointer to the bus structure
- * @param min_devfn minimum devfn to look at in the scan usually 0x00
- * @param max_devfn maximum devfn to look at in the scan usually 0xff
- * @param max current bus number
- *
- * @return The maximum bus number found, after scanning all subordinate busses
+ * @param bus Pointer to the bus structure.
+ * @param min_devfn Minimum devfn to look at in the scan, usually 0x00.
+ * @param max_devfn Maximum devfn to look at in the scan, usually 0xff.
+ * @param max Current bus number.
+ * @return The maximum bus number found, after scanning all subordinate busses.
*/
unsigned int pci_scan_bus(struct bus *bus,
unsigned min_devfn, unsigned max_devfn,
}
/**
- * @brief Scan a PCI bridge and the buses behind the bridge.
+ * Scan a PCI bridge and the buses behind the bridge.
*
* Determine the existence of buses behind the bridge. Set up the bridge
* according to the result of the scan.
*
* @param dev Pointer to the bridge device.
* @param max The highest bus number assigned up to now.
+ * @param do_scan_bus TODO
* @return The maximum bus number found, after scanning all subordinate buses.
*/
unsigned int do_pci_scan_bridge(struct device *dev, unsigned int max,
}
/**
- * @brief Scan a PCI bridge and the buses behind the bridge.
+ * Scan a PCI bridge and the buses behind the bridge.
*
* Determine the existence of buses behind the bridge. Set up the bridge
* according to the result of the scan.
}
/**
- * @brief Scan a PCI domain.
+ * Scan a PCI domain.
*
* This function is the default scan_bus() method for PCI domains.
*
- * @param dev pointer to the domain
- * @param max the highest bus number assgined up to now
- *
- * @return The maximum bus number found, after scanning all subordinate busses
+ * @param dev Pointer to the domain.
+ * @param max The highest bus number assigned up to now.
+ * @return The maximum bus number found, after scanning all subordinate busses.
*/
unsigned int pci_domain_scan_bus(device_t dev, unsigned int max)
{
#if CONFIG_PC80_SYSTEM == 1
/**
- *
- * @brief Assign IRQ numbers
+ * Assign IRQ numbers.
*
* This function assigns IRQs for all functions contained within the indicated
* device address. If the device does not exist or does not require interrupts
*
* This function should be called for each PCI slot in your system.
*
- * @param bus
- * @param slot
- * @param pIntAtoD is an array of IRQ #s that are assigned to PINTA through
- * PINTD of this slot. The particular irq #s that are passed in
- * depend on the routing inside your southbridge and on your
- * motherboard.
+ * @param bus Pointer to the bus structure.
+ * @param slot TODO
+ * @param pIntAtoD An array of IRQ #s that are assigned to PINTA through PINTD
+ * of this slot. The particular IRQ #s that are passed in depend on the
+ * routing inside your southbridge and on your board.
*/
void pci_assign_irqs(unsigned bus, unsigned slot,
const unsigned char pIntAtoD[4])
#include <device/pci_ids.h>
#include <device/pci_ops.h>
-/* The only consumer of the return value of get_pbus() is ops_pci_bus().
+/*
+ * The only consumer of the return value of get_pbus() is ops_pci_bus().
* ops_pci_bus() can handle being passed NULL and auto-picks working ops.
*/
static struct bus *get_pbus(device_t dev)
#include <string.h>
#include <cbfs.h>
-struct rom_header * pci_rom_probe(struct device *dev)
+struct rom_header *pci_rom_probe(struct device *dev)
{
struct rom_header *rom_header;
struct pci_data *rom_data;
#include <device/pci_ids.h>
#include <device/pciexp.h>
-
static void pciexp_tune_dev(device_t dev)
{
unsigned cap;
return max;
}
-
unsigned int pciexp_scan_bridge(device_t dev, unsigned int max)
{
return do_pci_scan_bridge(dev, max, pciexp_scan_bus);
#include <device/pci_ids.h>
#include <device/pcix.h>
-
static void pcix_tune_dev(device_t dev)
{
unsigned cap;
return max;
}
-
/** Default device operations for PCI-X bridges */
static struct pci_operations pcix_bus_ops_pci = {
.set_subsystem = 0,
#include <reset.h>
/**
- * Read the resources for the root device,
- * that encompass the resources for the entire system.
- * @param root Pointer to the device structure for the system root device
+ * Read the resources for the root device, that encompass the resources for
+ * the entire system.
+ *
+ * @param root Pointer to the device structure for the system root device.
*/
static void root_dev_read_resources(device_t root)
{
}
/**
- * @brief Write the resources for every device
+ * Write the resources for every device.
+ *
+ * Write the resources for the root device, and every device under it which
+ * are all of the devices.
*
- * Write the resources for the root device,
- * and every device under it which are all of the devices.
- * @param root Pointer to the device structure for the system root device
+ * @param root Pointer to the device structure for the system root device.
*/
static void root_dev_set_resources(device_t root)
{
}
/**
- * @brief Scan devices on static buses.
+ * Scan devices on static buses.
*
* The enumeration of certain buses is purely static. The existence of
* devices on those buses can be completely determined at compile time
* This function is the default scan_bus() method for the root device and
* LPC bridges.
*
- * @param bus Pointer to the device structure which the static buses are attached
- * @param max Maximum bus number currently used before scanning.
+ * @param bus Pointer to the device to which the static buses are attached to.
+ * @param max Maximum bus number currently used before scanning.
* @return Largest bus number used.
*/
static int smbus_max = 0;
}
/**
- * @brief Scan root bus for generic systems
- *
- * @param root The root device structure
- * @param max The current bus number scanned so far, usually 0x00
+ * Scan root bus for generic systems.
*
* This function is the default scan_bus() method of the root device.
+ *
+ * @param root The root device structure.
+ * @param max The current bus number scanned so far, usually 0x00.
+ * @return TODO.
*/
static unsigned int root_dev_scan_bus(device_t root, unsigned int max)
{
}
/**
- * @brief Default device operation for root device
+ * Default device operation for root device.
*
* This is the default device operation for root devices. These operations
- * should be fully usable as is. However the chip_operations::enable_dev()
+ * should be fully usable as is. However the chip_operations::enable_dev()
* of a motherboard can override this if you want non-default behavior.
*/
struct device_operations default_dev_ops_root = {
return pbus;
}
-/*multi level i2c MUX??? may need to find the first i2c device and then set link
- * down to current dev
- 1 store get_pbus_smbus list link
- 2 reverse the link and call set link */
-
+/*
+ * Multi-level I2C MUX? may need to find the first i2c device and then set link
+ * down to current dev.
+ *
+ * 1 store get_pbus_smbus list link
+ * 2 reverse the link and call set link.
+ *
+ * @param dev TODO.
+ */
int smbus_set_link(device_t dev)
{
struct bus *pbus_a[4]; // 4 level mux only. Enough?
{
return ops_smbus_bus(get_pbus_smbus(dev))->block_write(dev, cmd, bytes, buffer);
}
-
-
projects / coreboot.git / commitdiff