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coreboot-libre-fam15h-rdimm/payloads/libpayload/include/usb/usb.h

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/*
* This file is part of the libpayload project.
*
* Copyright (C) 2008 coresystems GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef __USB_H
#define __USB_H
#include <libpayload.h>
#include <pci/pci.h>
#include <stdint.h>
typedef enum { host_to_device = 0, device_to_host = 1 } dev_req_dir;
typedef enum { standard_type = 0, class_type = 1, vendor_type =
2, reserved_type = 3
} dev_req_type;
typedef enum { dev_recp = 0, iface_recp = 1, endp_recp = 2, other_recp = 3
} dev_req_recp;
enum {
DT_DEV = 1,
DT_CFG = 2,
DT_STR = 3,
DT_INTF = 4,
DT_ENDP = 5,
};
typedef enum {
GET_STATUS = 0,
CLEAR_FEATURE = 1,
SET_FEATURE = 3,
SET_ADDRESS = 5,
GET_DESCRIPTOR = 6,
SET_DESCRIPTOR = 7,
GET_CONFIGURATION = 8,
SET_CONFIGURATION = 9,
GET_INTERFACE = 10,
SET_INTERFACE = 11,
SYNCH_FRAME = 12
} bRequest_Codes;
typedef enum {
ENDPOINT_HALT = 0,
DEVICE_REMOTE_WAKEUP = 1,
TEST_MODE = 2
} feature_selectors;
/* SetAddress() recovery interval (USB 2.0 specification 9.2.6.3 */
#define SET_ADDRESS_MDELAY 2
/*
* USB sets an upper limit of 5 seconds for any transfer to be completed.
*
* Data originally from EHCI driver:
* Tested with some USB2.0 flash sticks:
* TUR turn around took about 2.2s for the slowest (13fe:3800), maximum
* of 250ms for the others.
*
* SET ADDRESS on xHCI controllers.
* The USB specification indicates that devices must complete processing
* of a SET ADDRESS request within 50 ms. However, some hubs were found
* to take more than 100 ms to complete a SET ADDRESS request on a
* downstream port.
*/
#define USB_MAX_PROCESSING_TIME_US (5 * 1000 * 1000)
#define USB_FULL_LOW_SPEED_FRAME_US 1000
typedef struct {
unsigned char bDescLength;
unsigned char bDescriptorType;
unsigned char bNbrPorts;
union {
struct {
unsigned long logicalPowerSwitchingMode:2;
unsigned long isCompoundDevice:1;
unsigned long overcurrentProtectionMode:2;
unsigned long ttThinkTime:2;
unsigned long arePortIndicatorsSupported:1;
unsigned long:8;
} __packed;
unsigned short wHubCharacteristics;
} __packed;
unsigned char bPowerOn2PwrGood;
unsigned char bHubContrCurrent;
char DeviceRemovable[];
} __packed hub_descriptor_t;
typedef struct {
unsigned char bLength;
unsigned char bDescriptorType;
unsigned short bcdUSB;
unsigned char bDeviceClass;
unsigned char bDeviceSubClass;
unsigned char bDeviceProtocol;
unsigned char bMaxPacketSize0;
unsigned short idVendor;
unsigned short idProduct;
unsigned short bcdDevice;
unsigned char iManufacturer;
unsigned char iProduct;
unsigned char iSerialNumber;
unsigned char bNumConfigurations;
} __packed device_descriptor_t;
typedef struct {
unsigned char bLength;
unsigned char bDescriptorType;
unsigned short wTotalLength;
unsigned char bNumInterfaces;
unsigned char bConfigurationValue;
unsigned char iConfiguration;
unsigned char bmAttributes;
unsigned char bMaxPower;
} __packed configuration_descriptor_t;
typedef struct {
unsigned char bLength;
unsigned char bDescriptorType;
unsigned char bInterfaceNumber;
unsigned char bAlternateSetting;
unsigned char bNumEndpoints;
unsigned char bInterfaceClass;
unsigned char bInterfaceSubClass;
unsigned char bInterfaceProtocol;
unsigned char iInterface;
} __packed interface_descriptor_t;
typedef struct {
unsigned char bLength;
unsigned char bDescriptorType;
unsigned char bEndpointAddress;
unsigned char bmAttributes;
unsigned short wMaxPacketSize;
unsigned char bInterval;
} __packed endpoint_descriptor_t;
typedef struct {
unsigned char bLength;
unsigned char bDescriptorType;
unsigned short bcdHID;
unsigned char bCountryCode;
unsigned char bNumDescriptors;
unsigned char bReportDescriptorType;
unsigned short wReportDescriptorLength;
} __packed hid_descriptor_t;
typedef struct {
union {
struct {
dev_req_recp req_recp:5;
dev_req_type req_type:2;
dev_req_dir data_dir:1;
} __packed;
unsigned char bmRequestType;
} __packed;
unsigned char bRequest;
unsigned short wValue;
unsigned short wIndex;
unsigned short wLength;
} __packed dev_req_t;
struct usbdev_hc;
typedef struct usbdev_hc hci_t;
struct usbdev;
typedef struct usbdev usbdev_t;
typedef enum { SETUP, IN, OUT } direction_t;
typedef enum { CONTROL = 0, ISOCHRONOUS = 1, BULK = 2, INTERRUPT = 3
} endpoint_type;
typedef struct {
usbdev_t *dev;
int endpoint;
direction_t direction;
int toggle;
int maxpacketsize;
endpoint_type type;
int interval; /* expressed as binary logarithm of the number
of microframes (i.e. t = 125us * 2^interval) */
} endpoint_t;
typedef enum {
UNKNOWN_SPEED = -1,
FULL_SPEED = 0,
LOW_SPEED = 1,
HIGH_SPEED = 2,
SUPER_SPEED = 3,
SUPER_SPEED_PLUS = 4,
} usb_speed;
struct usbdev {
hci_t *controller;
endpoint_t endpoints[32];
int num_endp;
int address; // usb address
int hub; // hub, device is attached to
int port; // port where device is attached
usb_speed speed;
u32 quirks; // quirks field. got to love usb
void *data;
device_descriptor_t *descriptor;
configuration_descriptor_t *configuration;
void (*init) (usbdev_t *dev);
void (*destroy) (usbdev_t *dev);
void (*poll) (usbdev_t *dev);
};
typedef enum { OHCI = 0, UHCI = 1, EHCI = 2, XHCI = 3, DWC2 = 4} hc_type;
struct usbdev_hc {
hci_t *next;
uintptr_t reg_base;
pcidev_t pcidev; // 0 if not used (eg on ARM)
hc_type type;
int latest_address;
usbdev_t *devices[128]; // dev 0 is root hub, 127 is last addressable
/* start(): Resume operation. */
void (*start) (hci_t *controller);
/* stop(): Stop operation but keep controller initialized. */
void (*stop) (hci_t *controller);
/* reset(): Perform a controller reset. The controller needs to
be (re)initialized afterwards to work (again). */
void (*reset) (hci_t *controller);
/* init(): Initialize a (previously reset) controller
to a working state. */
void (*init) (hci_t *controller);
/* shutdown(): Stop operation, detach host controller and shutdown
this driver instance. After calling shutdown() any
other usage of this hci_t* is invalid. */
void (*shutdown) (hci_t *controller);
int (*bulk) (endpoint_t *ep, int size, u8 *data, int finalize);
int (*control) (usbdev_t *dev, direction_t pid, int dr_length,
void *devreq, int data_length, u8 *data);
void* (*create_intr_queue) (endpoint_t *ep, int reqsize, int reqcount, int reqtiming);
void (*destroy_intr_queue) (endpoint_t *ep, void *queue);
u8* (*poll_intr_queue) (void *queue);
void *instance;
/* set_address(): Tell the usb device its address (xHCI
controllers want to do this by
themselves). Also, allocate the usbdev
structure, initialize enpoint 0
(including MPS) and return it. */
usbdev_t *(*set_address) (hci_t *controller, usb_speed speed,
int hubport, int hubaddr);
/* finish_device_config(): Another hook for xHCI,
returns 0 on success. */
int (*finish_device_config) (usbdev_t *dev);
/* destroy_device(): Finally, destroy all structures that
were allocated during set_address()
and finish_device_config(). */
void (*destroy_device) (hci_t *controller, int devaddr);
};
hci_t *usb_add_mmio_hc(hc_type type, void *bar);
hci_t *new_controller (void);
void detach_controller (hci_t *controller);
void usb_poll (void);
usbdev_t *init_device_entry (hci_t *controller, int num);
int usb_decode_mps0 (usb_speed speed, u8 bMaxPacketSize0);
int speed_to_default_mps(usb_speed speed);
int set_feature (usbdev_t *dev, int endp, int feature, int rtype);
int get_status (usbdev_t *dev, int endp, int rtype, int len, void *data);
int get_descriptor (usbdev_t *dev, int rtype, int descType, int descIdx,
void *data, size_t len);
int set_configuration (usbdev_t *dev);
int clear_feature (usbdev_t *dev, int endp, int feature, int rtype);
int clear_stall (endpoint_t *ep);
_Bool is_usb_speed_ss(usb_speed speed);
void usb_nop_init (usbdev_t *dev);
void usb_hub_init (usbdev_t *dev);
void usb_hid_init (usbdev_t *dev);
void usb_msc_init (usbdev_t *dev);
void usb_generic_init (usbdev_t *dev);
int closest_usb2_hub(const usbdev_t *dev, int *const addr, int *const port);
static inline unsigned char
gen_bmRequestType (dev_req_dir dir, dev_req_type type, dev_req_recp recp)
{
return (dir << 7) | (type << 5) | recp;
}
/* default "set address" handler */
usbdev_t *generic_set_address (hci_t *controller, usb_speed speed,
int hubport, int hubaddr);
void usb_detach_device(hci_t *controller, int devno);
int usb_attach_device(hci_t *controller, int hubaddress, int port,
usb_speed speed);
u32 usb_quirk_check(u16 vendor, u16 device);
int usb_interface_check(u16 vendor, u16 device);
#define USB_QUIRK_MSC_FORCE_PROTO_SCSI (1 << 0)
#define USB_QUIRK_MSC_FORCE_PROTO_ATAPI (1 << 1)
#define USB_QUIRK_MSC_FORCE_PROTO_UFI (1 << 2)
#define USB_QUIRK_MSC_FORCE_PROTO_RBC (1 << 3)
#define USB_QUIRK_MSC_FORCE_TRANS_BBB (1 << 4)
#define USB_QUIRK_MSC_FORCE_TRANS_CBI (1 << 5)
#define USB_QUIRK_MSC_FORCE_TRANS_CBI_I (1 << 6)
#define USB_QUIRK_MSC_NO_TEST_UNIT_READY (1 << 7)
#define USB_QUIRK_MSC_SHORT_INQUIRY (1 << 8)
#define USB_QUIRK_TEST (1 << 31)
#define USB_QUIRK_NONE 0
static inline void usb_debug(const char *fmt, ...)
{
#ifdef USB_DEBUG
va_list ap;
va_start(ap, fmt);
vprintf(fmt, ap);
va_end(ap);
#endif
}
/**
* To be implemented by libpayload-client. It's called by the USB stack
* when a new USB device is found which isn't claimed by a built in driver,
* so the client has the chance to know about it.
*
* @param dev descriptor for the USB device
*/
void __attribute__((weak)) usb_generic_create (usbdev_t *dev);
/**
* To be implemented by libpayload-client. It's called by the USB stack
* when it finds out that a USB device is removed which wasn't claimed by a
* built in driver.
*
* @param dev descriptor for the USB device
*/
void __attribute__((weak)) usb_generic_remove (usbdev_t *dev);
#endif
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