diff options
author | 2016-06-03 03:33:22 +0000 | |
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committer | 2016-06-03 03:33:23 +0000 | |
commit | da27230f80795d0028333713f036d44c53cb0e68 (patch) | |
tree | b3d379eaf000adf72b36cb01cdf4d79c3e3f064c /qemu/roms/ipxe/src/drivers/net/ncm.h | |
parent | 0e68cb048bb8aadb14675f5d4286d8ab2fc35449 (diff) | |
parent | 437fd90c0250dee670290f9b714253671a990160 (diff) |
Merge "These changes are the raw update to qemu-2.6."
Diffstat (limited to 'qemu/roms/ipxe/src/drivers/net/ncm.h')
-rw-r--r-- | qemu/roms/ipxe/src/drivers/net/ncm.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/qemu/roms/ipxe/src/drivers/net/ncm.h b/qemu/roms/ipxe/src/drivers/net/ncm.h new file mode 100644 index 000000000..a9565a56b --- /dev/null +++ b/qemu/roms/ipxe/src/drivers/net/ncm.h @@ -0,0 +1,173 @@ +#ifndef _NCM_H +#define _NCM_H + +/** @file + * + * CDC-NCM USB Ethernet driver + * + */ + +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); + +#include <stdint.h> +#include <ipxe/usb.h> +#include <ipxe/cdc.h> +#include <byteswap.h> +#include "ecm.h" + +/** CDC-NCM subclass */ +#define USB_SUBCLASS_CDC_NCM 0x0d + +/** Get NTB parameters */ +#define NCM_GET_NTB_PARAMETERS \ + ( USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE | \ + USB_REQUEST_TYPE ( 0x80 ) ) + +/** NTB datagram parameters */ +struct ncm_ntb_datagram_parameters { + /** Maximum size */ + uint32_t mtu; + /** Alignment divisor */ + uint16_t divisor; + /** Alignment remainder */ + uint16_t remainder; + /** Alignment modulus */ + uint16_t modulus; +} __attribute__ (( packed )); + +/** NTB parameters */ +struct ncm_ntb_parameters { + /** Length */ + uint16_t len; + /** Supported formats */ + uint16_t formats; + /** IN datagram parameters */ + struct ncm_ntb_datagram_parameters in; + /** Reserved */ + uint16_t reserved; + /** OUT datagram parameters */ + struct ncm_ntb_datagram_parameters out; + /** Maximum number of datagrams per OUT NTB */ + uint16_t max; +} __attribute__ (( packed )); + +/** Set NTB input size */ +#define NCM_SET_NTB_INPUT_SIZE \ + ( USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE | \ + USB_REQUEST_TYPE ( 0x86 ) ) + +/** Set NTB input size */ +struct ncm_set_ntb_input_size { + /** Maximum size */ + uint32_t mtu; +} __attribute__ (( packed )); + +/** Minimum allowed NTB input size */ +#define NCM_MIN_NTB_INPUT_SIZE 2048 + +/** Maximum allowed NTB input size (16-bit) */ +#define NCM_MAX_NTB_INPUT_SIZE 65536 + +/** CDC-NCM transfer header (16-bit) */ +struct ncm_transfer_header { + /** Signature */ + uint32_t magic; + /** Header length */ + uint16_t header_len; + /** Sequence number */ + uint16_t sequence; + /** Total length */ + uint16_t len; + /** Offset of first datagram pointer */ + uint16_t offset; +} __attribute__ (( packed )); + +/** CDC-NCM transfer header magic */ +#define NCM_TRANSFER_HEADER_MAGIC 0x484d434eUL + +/** CDC-NCM datagram descriptor (16-bit) */ +struct ncm_datagram_descriptor { + /** Starting offset */ + uint16_t offset; + /** Length */ + uint16_t len; +} __attribute__ (( packed )); + +/** CDC-NCM datagram pointer (16-bit) */ +struct ncm_datagram_pointer { + /** Signature */ + uint32_t magic; + /** Header length */ + uint16_t header_len; + /** Offset of next datagram pointer */ + uint16_t offset; + /** Datagram descriptors + * + * Must be terminated by an empty descriptor. + */ + struct ncm_datagram_descriptor desc[0]; +} __attribute__ (( packed )); + +/** CDC-NCM datagram pointer magic */ +#define NCM_DATAGRAM_POINTER_MAGIC 0x304d434eUL + +/** CDC-NCM datagram pointer CRC present flag */ +#define NCM_DATAGRAM_POINTER_MAGIC_CRC 0x01000000UL + +/** NTB constructed for transmitted packets (excluding padding) + * + * This is a policy decision. + */ +struct ncm_ntb_header { + /** Transfer header */ + struct ncm_transfer_header nth; + /** Datagram pointer */ + struct ncm_datagram_pointer ndp; + /** Datagram descriptors */ + struct ncm_datagram_descriptor desc[2]; +} __attribute__ (( packed )); + +/** A CDC-NCM network device */ +struct ncm_device { + /** USB device */ + struct usb_device *usb; + /** USB bus */ + struct usb_bus *bus; + /** Network device */ + struct net_device *netdev; + /** USB network device */ + struct usbnet_device usbnet; + + /** Maximum supported NTB input size */ + size_t mtu; + /** Transmitted packet sequence number */ + uint16_t sequence; + /** Alignment padding required on transmitted packets */ + size_t padding; +}; + +/** Bulk IN ring minimum buffer count + * + * This is a policy decision. + */ +#define NCM_IN_MIN_COUNT 3 + +/** Bulk IN ring minimum total buffer size + * + * This is a policy decision. + */ +#define NCM_IN_MIN_SIZE 16384 + +/** Bulk IN ring maximum total buffer size + * + * This is a policy decision. + */ +#define NCM_IN_MAX_SIZE 131072 + +/** Interrupt ring buffer count + * + * This is a policy decision. + */ +#define NCM_INTR_COUNT 2 + +#endif /* _NCM_H */ |