/* typhoon.h: chip info for the 3Com 3CR990 family of controllers */ /* Written 2002-2003 by David Dillow <dave@thedillows.org>
This software may be used and distributed according to the terms of the GNU General Public License (GPL), incorporated herein by reference. Drivers based on or derived from this code fall under the GPL and must retain the authorship, copyright and license notice. This file is not a complete program and may only be used when the entire operating system is licensed under the GPL.
This software is available on a public web site. It may enable cryptographic capabilities of the 3Com hardware, and may be exported from the United States under License Exception "TSU" pursuant to 15 C.F.R. Section 740.13(e).
This work was funded by the National Library of Medicine under the Department of Energy project number 0274DD06D1 and NLM project number Y1-LM-2015-01.
*/
/* All Typhoon ring positions are specificed in bytes, and point to the * first "clean" entry in the ring -- ie the next entry we use for whatever * purpose.
*/
/* The Typhoon basic ring * ringBase: where this ring lives (our virtual address) * lastWrite: the next entry we'll use
*/ struct basic_ring {
u8 *ringBase;
u32 lastWrite;
};
/* The Typhoon transmit ring -- same as a basic ring, plus: * lastRead: where we're at in regard to cleaning up the ring * writeRegister: register to use for writing (different for Hi & Lo rings)
*/ struct transmit_ring {
u8 *ringBase;
u32 lastWrite;
u32 lastRead; int writeRegister;
};
/* The host<->Typhoon ring index structure * This indicates the current positions in the rings * * All values must be in little endian format for the 3XP * * rxHiCleared: entry we've cleared to in the Hi receive ring * rxLoCleared: entry we've cleared to in the Lo receive ring * rxBuffReady: next entry we'll put a free buffer in * respCleared: entry we've cleared to in the response ring * * txLoCleared: entry the NIC has cleared to in the Lo transmit ring * txHiCleared: entry the NIC has cleared to in the Hi transmit ring * rxLoReady: entry the NIC has filled to in the Lo receive ring * rxBuffCleared: entry the NIC has cleared in the free buffer ring * cmdCleared: entry the NIC has cleared in the command ring * respReady: entry the NIC has filled to in the response ring * rxHiReady: entry the NIC has filled to in the Hi receive ring
*/ struct typhoon_indexes { /* The first four are written by the host, and read by the NIC */ volatile __le32 rxHiCleared; volatile __le32 rxLoCleared; volatile __le32 rxBuffReady; volatile __le32 respCleared;
/* The remaining are written by the NIC, and read by the host */ volatile __le32 txLoCleared; volatile __le32 txHiCleared; volatile __le32 rxLoReady; volatile __le32 rxBuffCleared; volatile __le32 cmdCleared; volatile __le32 respReady; volatile __le32 rxHiReady;
} __packed;
/* The host<->Typhoon interface * Our means of communicating where things are * * All values must be in little endian format for the 3XP * * ringIndex: 64 bit bus address of the index structure * txLoAddr: 64 bit bus address of the Lo transmit ring * txLoSize: size (in bytes) of the Lo transmit ring * txHi*: as above for the Hi priority transmit ring * rxLo*: as above for the Lo priority receive ring * rxBuff*: as above for the free buffer ring * cmd*: as above for the command ring * resp*: as above for the response ring * zeroAddr: 64 bit bus address of a zero word (for DMA) * rxHi*: as above for the Hi Priority receive ring * * While there is room for 64 bit addresses, current versions of the 3XP * only do 32 bit addresses, so the *Hi for each of the above will always * be zero.
*/ struct typhoon_interface {
__le32 ringIndex;
__le32 ringIndexHi;
__le32 txLoAddr;
__le32 txLoAddrHi;
__le32 txLoSize;
__le32 txHiAddr;
__le32 txHiAddrHi;
__le32 txHiSize;
__le32 rxLoAddr;
__le32 rxLoAddrHi;
__le32 rxLoSize;
__le32 rxBuffAddr;
__le32 rxBuffAddrHi;
__le32 rxBuffSize;
__le32 cmdAddr;
__le32 cmdAddrHi;
__le32 cmdSize;
__le32 respAddr;
__le32 respAddrHi;
__le32 respSize;
__le32 zeroAddr;
__le32 zeroAddrHi;
__le32 rxHiAddr;
__le32 rxHiAddrHi;
__le32 rxHiSize;
} __packed;
/* The Typhoon transmit/fragment descriptor * * A packet is described by a packet descriptor, followed by option descriptors, * if any, then one or more fragment descriptors. * * Packet descriptor: * flags: Descriptor type * len:i zero, or length of this packet * addr*: 8 bytes of opaque data to the firmware -- for skb pointer * processFlags: Determine offload tasks to perform on this packet. * * Fragment descriptor: * flags: Descriptor type * len:i length of this fragment * addr: low bytes of DMA address for this part of the packet * addrHi: hi bytes of DMA address for this part of the packet * processFlags: must be zero * * TYPHOON_DESC_VALID is not mentioned in their docs, but their Linux * driver uses it.
*/ struct tx_desc {
u8 flags; #define TYPHOON_TYPE_MASK 0x07 #define TYPHOON_FRAG_DESC 0x00 #define TYPHOON_TX_DESC 0x01 #define TYPHOON_CMD_DESC 0x02 #define TYPHOON_OPT_DESC 0x03 #define TYPHOON_RX_DESC 0x04 #define TYPHOON_RESP_DESC 0x05 #define TYPHOON_OPT_TYPE_MASK 0xf0 #define TYPHOON_OPT_IPSEC 0x00 #define TYPHOON_OPT_TCP_SEG 0x10 #define TYPHOON_CMD_RESPOND 0x40 #define TYPHOON_RESP_ERROR 0x40 #define TYPHOON_RX_ERROR 0x40 #define TYPHOON_DESC_VALID 0x80
u8 numDesc;
__le16 len; union { struct {
__le32 addr;
__le32 addrHi;
} frag;
u64 tx_addr; /* opaque for hardware, for TX_DESC */
};
__le32 processFlags; #define TYPHOON_TX_PF_NO_CRC cpu_to_le32(0x00000001) #define TYPHOON_TX_PF_IP_CHKSUM cpu_to_le32(0x00000002) #define TYPHOON_TX_PF_TCP_CHKSUM cpu_to_le32(0x00000004) #define TYPHOON_TX_PF_TCP_SEGMENT cpu_to_le32(0x00000008) #define TYPHOON_TX_PF_INSERT_VLAN cpu_to_le32(0x00000010) #define TYPHOON_TX_PF_IPSEC cpu_to_le32(0x00000020) #define TYPHOON_TX_PF_VLAN_PRIORITY cpu_to_le32(0x00000040) #define TYPHOON_TX_PF_UDP_CHKSUM cpu_to_le32(0x00000080) #define TYPHOON_TX_PF_PAD_FRAME cpu_to_le32(0x00000100) #define TYPHOON_TX_PF_RESERVED cpu_to_le32(0x00000e00) #define TYPHOON_TX_PF_VLAN_MASK cpu_to_le32(0x0ffff000) #define TYPHOON_TX_PF_INTERNAL cpu_to_le32(0xf0000000) #define TYPHOON_TX_PF_VLAN_TAG_SHIFT 12
} __packed;
/* The TCP Segmentation offload option descriptor * * flags: descriptor type * numDesc: must be 1 * mss_flags: bits 0-11 (little endian) are MSS, 12 is first TSO descriptor * 13 is list TSO descriptor, set both if only one TSO * respAddrLo: low bytes of address of the bytesTx field of this descriptor * bytesTx: total number of bytes in this TSO request * status: 0 on completion
*/ struct tcpopt_desc {
u8 flags;
u8 numDesc;
__le16 mss_flags; #define TYPHOON_TSO_FIRST cpu_to_le16(0x1000) #define TYPHOON_TSO_LAST cpu_to_le16(0x2000)
__le32 respAddrLo;
__le32 bytesTx;
__le32 status;
} __packed;
/* The IPSEC Offload descriptor * * flags: descriptor type * numDesc: must be 1 * ipsecFlags: bit 0: 0 -- generate IV, 1 -- use supplied IV * sa1, sa2: Security Association IDs for this packet * reserved: set to 0
*/ struct ipsec_desc {
u8 flags;
u8 numDesc;
__le16 ipsecFlags; #define TYPHOON_IPSEC_GEN_IV cpu_to_le16(0x0000) #define TYPHOON_IPSEC_USE_IV cpu_to_le16(0x0001)
__le32 sa1;
__le32 sa2;
__le32 reserved;
} __packed;
/* The Typhoon receive descriptor (Updated by NIC) * * flags: Descriptor type, error indication * numDesc: Always zero * frameLen: the size of the packet received * addr: low 32 bytes of the virtual addr passed in for this buffer * addrHi: high 32 bytes of the virtual addr passed in for this buffer * rxStatus: Error if set in flags, otherwise result of offload processing * filterResults: results of filtering on packet, not used * ipsecResults: Results of IPSEC processing * vlanTag: the 801.2q TCI from the packet
*/ struct rx_desc {
u8 flags;
u8 numDesc;
__le16 frameLen;
u32 addr; /* opaque, comes from virtAddr */
u32 addrHi; /* opaque, comes from virtAddrHi */
__le32 rxStatus; #define TYPHOON_RX_ERR_INTERNAL cpu_to_le32(0x00000000) #define TYPHOON_RX_ERR_FIFO_UNDERRUN cpu_to_le32(0x00000001) #define TYPHOON_RX_ERR_BAD_SSD cpu_to_le32(0x00000002) #define TYPHOON_RX_ERR_RUNT cpu_to_le32(0x00000003) #define TYPHOON_RX_ERR_CRC cpu_to_le32(0x00000004) #define TYPHOON_RX_ERR_OVERSIZE cpu_to_le32(0x00000005) #define TYPHOON_RX_ERR_ALIGN cpu_to_le32(0x00000006) #define TYPHOON_RX_ERR_DRIBBLE cpu_to_le32(0x00000007) #define TYPHOON_RX_PROTO_MASK cpu_to_le32(0x00000003) #define TYPHOON_RX_PROTO_UNKNOWN cpu_to_le32(0x00000000) #define TYPHOON_RX_PROTO_IP cpu_to_le32(0x00000001) #define TYPHOON_RX_PROTO_IPX cpu_to_le32(0x00000002) #define TYPHOON_RX_VLAN cpu_to_le32(0x00000004) #define TYPHOON_RX_IP_FRAG cpu_to_le32(0x00000008) #define TYPHOON_RX_IPSEC cpu_to_le32(0x00000010) #define TYPHOON_RX_IP_CHK_FAIL cpu_to_le32(0x00000020) #define TYPHOON_RX_TCP_CHK_FAIL cpu_to_le32(0x00000040) #define TYPHOON_RX_UDP_CHK_FAIL cpu_to_le32(0x00000080) #define TYPHOON_RX_IP_CHK_GOOD cpu_to_le32(0x00000100) #define TYPHOON_RX_TCP_CHK_GOOD cpu_to_le32(0x00000200) #define TYPHOON_RX_UDP_CHK_GOOD cpu_to_le32(0x00000400)
__le16 filterResults; #define TYPHOON_RX_FILTER_MASK cpu_to_le16(0x7fff) #define TYPHOON_RX_FILTERED cpu_to_le16(0x8000)
__le16 ipsecResults; #define TYPHOON_RX_OUTER_AH_GOOD cpu_to_le16(0x0001) #define TYPHOON_RX_OUTER_ESP_GOOD cpu_to_le16(0x0002) #define TYPHOON_RX_INNER_AH_GOOD cpu_to_le16(0x0004) #define TYPHOON_RX_INNER_ESP_GOOD cpu_to_le16(0x0008) #define TYPHOON_RX_OUTER_AH_FAIL cpu_to_le16(0x0010) #define TYPHOON_RX_OUTER_ESP_FAIL cpu_to_le16(0x0020) #define TYPHOON_RX_INNER_AH_FAIL cpu_to_le16(0x0040) #define TYPHOON_RX_INNER_ESP_FAIL cpu_to_le16(0x0080) #define TYPHOON_RX_UNKNOWN_SA cpu_to_le16(0x0100) #define TYPHOON_RX_ESP_FORMAT_ERR cpu_to_le16(0x0200)
__be32 vlanTag;
} __packed;
/* The Typhoon free buffer descriptor, used to give a buffer to the NIC * * physAddr: low 32 bits of the bus address of the buffer * physAddrHi: high 32 bits of the bus address of the buffer, always zero * virtAddr: low 32 bits of the skb address * virtAddrHi: high 32 bits of the skb address, always zero * * the virt* address is basically two 32 bit cookies, just passed back * from the NIC
*/ struct rx_free {
__le32 physAddr;
__le32 physAddrHi;
u32 virtAddr;
u32 virtAddrHi;
} __packed;
/* The Typhoon command descriptor, used for commands and responses * * flags: descriptor type * numDesc: number of descriptors following in this command/response, * ie, zero for a one descriptor command * cmd: the command * seqNo: sequence number (unused) * parm1: use varies by command * parm2: use varies by command * parm3: use varies by command
*/ struct cmd_desc {
u8 flags;
u8 numDesc;
__le16 cmd; #define TYPHOON_CMD_TX_ENABLE cpu_to_le16(0x0001) #define TYPHOON_CMD_TX_DISABLE cpu_to_le16(0x0002) #define TYPHOON_CMD_RX_ENABLE cpu_to_le16(0x0003) #define TYPHOON_CMD_RX_DISABLE cpu_to_le16(0x0004) #define TYPHOON_CMD_SET_RX_FILTER cpu_to_le16(0x0005) #define TYPHOON_CMD_READ_STATS cpu_to_le16(0x0007) #define TYPHOON_CMD_XCVR_SELECT cpu_to_le16(0x0013) #define TYPHOON_CMD_SET_MAX_PKT_SIZE cpu_to_le16(0x001a) #define TYPHOON_CMD_READ_MEDIA_STATUS cpu_to_le16(0x001b) #define TYPHOON_CMD_GOTO_SLEEP cpu_to_le16(0x0023) #define TYPHOON_CMD_SET_MULTICAST_HASH cpu_to_le16(0x0025) #define TYPHOON_CMD_SET_MAC_ADDRESS cpu_to_le16(0x0026) #define TYPHOON_CMD_READ_MAC_ADDRESS cpu_to_le16(0x0027) #define TYPHOON_CMD_VLAN_TYPE_WRITE cpu_to_le16(0x002b) #define TYPHOON_CMD_CREATE_SA cpu_to_le16(0x0034) #define TYPHOON_CMD_DELETE_SA cpu_to_le16(0x0035) #define TYPHOON_CMD_READ_VERSIONS cpu_to_le16(0x0043) #define TYPHOON_CMD_IRQ_COALESCE_CTRL cpu_to_le16(0x0045) #define TYPHOON_CMD_ENABLE_WAKE_EVENTS cpu_to_le16(0x0049) #define TYPHOON_CMD_SET_OFFLOAD_TASKS cpu_to_le16(0x004f) #define TYPHOON_CMD_HELLO_RESP cpu_to_le16(0x0057) #define TYPHOON_CMD_HALT cpu_to_le16(0x005d) #define TYPHOON_CMD_READ_IPSEC_INFO cpu_to_le16(0x005e) #define TYPHOON_CMD_GET_IPSEC_ENABLE cpu_to_le16(0x0067) #define TYPHOON_CMD_GET_CMD_LVL cpu_to_le16(0x0069)
u16 seqNo;
__le16 parm1;
__le32 parm2;
__le32 parm3;
} __packed;
/* The Typhoon response descriptor, see command descriptor for details
*/ struct resp_desc {
u8 flags;
u8 numDesc;
__le16 cmd;
__le16 seqNo;
__le16 parm1;
__le32 parm2;
__le32 parm3;
} __packed;
/* These are used to load the firmware image on the NIC
*/ struct typhoon_file_header {
u8 tag[8];
__le32 version;
__le32 numSections;
__le32 startAddr;
__le32 hmacDigest[5];
} __packed;
/* 3XP irq bits (TYPHOON_REG_INTR{STATUS,ENABLE,MASK}) * * Some of these came from OpenBSD, as the 3Com docs have it wrong * (INTR_SELF) or don't list it at all (INTR_*_ABORT) * * Enabling irqs on the Heartbeat reg (ArmToHost3) gets you an irq * about every 8ms, so don't do it.
*/ #define TYPHOON_INTR_HOST_INT 0x00000001 #define TYPHOON_INTR_ARM2HOST0 0x00000002 #define TYPHOON_INTR_ARM2HOST1 0x00000004 #define TYPHOON_INTR_ARM2HOST2 0x00000008 #define TYPHOON_INTR_ARM2HOST3 0x00000010 #define TYPHOON_INTR_DMA0 0x00000020 #define TYPHOON_INTR_DMA1 0x00000040 #define TYPHOON_INTR_DMA2 0x00000080 #define TYPHOON_INTR_DMA3 0x00000100 #define TYPHOON_INTR_MASTER_ABORT 0x00000200 #define TYPHOON_INTR_TARGET_ABORT 0x00000400 #define TYPHOON_INTR_SELF 0x00000800 #define TYPHOON_INTR_RESERVED 0xfffff000
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