drivers/net/ethernet/chelsio/cxgb4/t4_hw.h - maze/linux - Git at Google

 /*
  * This file is part of the Chelsio T4 Ethernet driver for Linux.
  *
  * Copyright (c) 2003-2010 Chelsio Communications, Inc. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
  * General Public License (GPL) Version 2, available from the file
  * COPYING in the main directory of this source tree, or the
  * OpenIB.org BSD license below:
  *
  *     Redistribution and use in source and binary forms, with or
  *     without modification, are permitted provided that the following
  *     conditions are met:
  *
  *      - Redistributions of source code must retain the above
  *        copyright notice, this list of conditions and the following
  *        disclaimer.
  *
  *      - 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.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */

 #ifndef __T4_HW_H
 #define __T4_HW_H

 #include <linux/types.h>

 enum {
 	NCHAN          = 4,     /* # of HW channels */
 	MAX_MTU        = 9600,  /* max MAC MTU, excluding header + FCS */
 	EEPROMSIZE     = 17408, /* Serial EEPROM physical size */
 	EEPROMVSIZE    = 32768, /* Serial EEPROM virtual address space size */
 	EEPROMPFSIZE   = 1024,  /* EEPROM writable area size for PFn, n>0 */
 	RSS_NENTRIES   = 2048,  /* # of entries in RSS mapping table */
 	TCB_SIZE       = 128,   /* TCB size */
 	NMTUS          = 16,    /* size of MTU table */
 	NCCTRL_WIN     = 32,    /* # of congestion control windows */
 	NEXACT_MAC     = 336,   /* # of exact MAC address filters */
 	L2T_SIZE       = 4096,  /* # of L2T entries */
 	MBOX_LEN       = 64,    /* mailbox size in bytes */
 	TRACE_LEN      = 112,   /* length of trace data and mask */
 	FILTER_OPT_LEN = 36,    /* filter tuple width for optional components */
 	NWOL_PAT       = 8,     /* # of WoL patterns */
 	WOL_PAT_LEN    = 128,   /* length of WoL patterns */
 };

 enum {
 	SF_PAGE_SIZE = 256,           /* serial flash page size */
 	SF_SEC_SIZE = 64 * 1024,      /* serial flash sector size */
 };

 enum { RSP_TYPE_FLBUF, RSP_TYPE_CPL, RSP_TYPE_INTR }; /* response entry types */

 enum { MBOX_OWNER_NONE, MBOX_OWNER_FW, MBOX_OWNER_DRV };    /* mailbox owners */

 enum {
 	SGE_MAX_WR_LEN = 512,     /* max WR size in bytes */
 	SGE_NTIMERS = 6,          /* # of interrupt holdoff timer values */
 	SGE_NCOUNTERS = 4,        /* # of interrupt packet counter values */

 	SGE_TIMER_RSTRT_CNTR = 6, /* restart RX packet threshold counter */
 	SGE_TIMER_UPD_CIDX = 7,   /* update cidx only */

 	SGE_EQ_IDXSIZE = 64,      /* egress queue pidx/cidx unit size */

 	SGE_INTRDST_PCI = 0,      /* interrupt destination is PCI-E */
 	SGE_INTRDST_IQ = 1,       /*   destination is an ingress queue */

 	SGE_UPDATEDEL_NONE = 0,   /* ingress queue pidx update delivery */
 	SGE_UPDATEDEL_INTR = 1,   /*   interrupt */
 	SGE_UPDATEDEL_STPG = 2,   /*   status page */
 	SGE_UPDATEDEL_BOTH = 3,   /*   interrupt and status page */

 	SGE_HOSTFCMODE_NONE = 0,  /* egress queue cidx updates */
 	SGE_HOSTFCMODE_IQ = 1,    /*   sent to ingress queue */
 	SGE_HOSTFCMODE_STPG = 2,  /*   sent to status page */
 	SGE_HOSTFCMODE_BOTH = 3,  /*   ingress queue and status page */

 	SGE_FETCHBURSTMIN_16B = 0,/* egress queue descriptor fetch minimum */
 	SGE_FETCHBURSTMIN_32B = 1,
 	SGE_FETCHBURSTMIN_64B = 2,
 	SGE_FETCHBURSTMIN_128B = 3,

 	SGE_FETCHBURSTMAX_64B = 0,/* egress queue descriptor fetch maximum */
 	SGE_FETCHBURSTMAX_128B = 1,
 	SGE_FETCHBURSTMAX_256B = 2,
 	SGE_FETCHBURSTMAX_512B = 3,

 	SGE_CIDXFLUSHTHRESH_1 = 0,/* egress queue cidx flush threshold */
 	SGE_CIDXFLUSHTHRESH_2 = 1,
 	SGE_CIDXFLUSHTHRESH_4 = 2,
 	SGE_CIDXFLUSHTHRESH_8 = 3,
 	SGE_CIDXFLUSHTHRESH_16 = 4,
 	SGE_CIDXFLUSHTHRESH_32 = 5,
 	SGE_CIDXFLUSHTHRESH_64 = 6,
 	SGE_CIDXFLUSHTHRESH_128 = 7,

 	SGE_INGPADBOUNDARY_SHIFT = 5,/* ingress queue pad boundary */
 };

 struct sge_qstat {                /* data written to SGE queue status entries */
 	__be32 qid;
 	__be16 cidx;
 	__be16 pidx;
 };

 /*
  * Structure for last 128 bits of response descriptors
  */
 struct rsp_ctrl {
 	__be32 hdrbuflen_pidx;
 	__be32 pldbuflen_qid;
 	union {
 		u8 type_gen;
 		__be64 last_flit;
 	};
 };

 #define RSPD_NEWBUF 0x80000000U
 #define RSPD_LEN(x) (((x) >> 0) & 0x7fffffffU)
 #define RSPD_QID(x) RSPD_LEN(x)

 #define RSPD_GEN(x)  ((x) >> 7)
 #define RSPD_TYPE(x) (((x) >> 4) & 3)

 #define QINTR_CNT_EN       0x1
 #define QINTR_TIMER_IDX(x) ((x) << 1)
 #define QINTR_TIMER_IDX_GET(x) (((x) >> 1) & 0x7)

 /*
  * Flash layout.
  */
 #define FLASH_START(start)	((start) * SF_SEC_SIZE)
 #define FLASH_MAX_SIZE(nsecs)	((nsecs) * SF_SEC_SIZE)

 enum {
 	/*
 	 * Various Expansion-ROM boot images, etc.
 	 */
 	FLASH_EXP_ROM_START_SEC = 0,
 	FLASH_EXP_ROM_NSECS = 6,
 	FLASH_EXP_ROM_START = FLASH_START(FLASH_EXP_ROM_START_SEC),
 	FLASH_EXP_ROM_MAX_SIZE = FLASH_MAX_SIZE(FLASH_EXP_ROM_NSECS),

 	/*
 	 * iSCSI Boot Firmware Table (iBFT) and other driver-related
 	 * parameters ...
 	 */
 	FLASH_IBFT_START_SEC = 6,
 	FLASH_IBFT_NSECS = 1,
 	FLASH_IBFT_START = FLASH_START(FLASH_IBFT_START_SEC),
 	FLASH_IBFT_MAX_SIZE = FLASH_MAX_SIZE(FLASH_IBFT_NSECS),

 	/*
 	 * Boot configuration data.
 	 */
 	FLASH_BOOTCFG_START_SEC = 7,
 	FLASH_BOOTCFG_NSECS = 1,
 	FLASH_BOOTCFG_START = FLASH_START(FLASH_BOOTCFG_START_SEC),
 	FLASH_BOOTCFG_MAX_SIZE = FLASH_MAX_SIZE(FLASH_BOOTCFG_NSECS),

 	/*
 	 * Location of firmware image in FLASH.
 	 */
 	FLASH_FW_START_SEC = 8,
 	FLASH_FW_NSECS = 8,
 	FLASH_FW_START = FLASH_START(FLASH_FW_START_SEC),
 	FLASH_FW_MAX_SIZE = FLASH_MAX_SIZE(FLASH_FW_NSECS),

 	/*
 	 * iSCSI persistent/crash information.
 	 */
 	FLASH_ISCSI_CRASH_START_SEC = 29,
 	FLASH_ISCSI_CRASH_NSECS = 1,
 	FLASH_ISCSI_CRASH_START = FLASH_START(FLASH_ISCSI_CRASH_START_SEC),
 	FLASH_ISCSI_CRASH_MAX_SIZE = FLASH_MAX_SIZE(FLASH_ISCSI_CRASH_NSECS),

 	/*
 	 * FCoE persistent/crash information.
 	 */
 	FLASH_FCOE_CRASH_START_SEC = 30,
 	FLASH_FCOE_CRASH_NSECS = 1,
 	FLASH_FCOE_CRASH_START = FLASH_START(FLASH_FCOE_CRASH_START_SEC),
 	FLASH_FCOE_CRASH_MAX_SIZE = FLASH_MAX_SIZE(FLASH_FCOE_CRASH_NSECS),

 	/*
 	 * Location of Firmware Configuration File in FLASH.  Since the FPGA
 	 * "FLASH" is smaller we need to store the Configuration File in a
 	 * different location -- which will overlap the end of the firmware
 	 * image if firmware ever gets that large ...
 	 */
 	FLASH_CFG_START_SEC = 31,
 	FLASH_CFG_NSECS = 1,
 	FLASH_CFG_START = FLASH_START(FLASH_CFG_START_SEC),
 	FLASH_CFG_MAX_SIZE = FLASH_MAX_SIZE(FLASH_CFG_NSECS),

 	FLASH_FPGA_CFG_START_SEC = 15,
 	FLASH_FPGA_CFG_START = FLASH_START(FLASH_FPGA_CFG_START_SEC),

 	/*
 	 * Sectors 32-63 are reserved for FLASH failover.
 	 */
 };

 #undef FLASH_START
 #undef FLASH_MAX_SIZE

 #endif /* __T4_HW_H */
	/*
	* This file is part of the Chelsio T4 Ethernet driver for Linux.
	*
	* Copyright (c) 2003-2010 Chelsio Communications, Inc. All rights reserved.
	*
	* This software is available to you under a choice of one of two
	* licenses. You may choose to be licensed under the terms of the GNU
	* General Public License (GPL) Version 2, available from the file
	* COPYING in the main directory of this source tree, or the
	* OpenIB.org BSD license below:
	*
	* Redistribution and use in source and binary forms, with or
	* without modification, are permitted provided that the following
	* conditions are met:
	*
	* - Redistributions of source code must retain the above
	* copyright notice, this list of conditions and the following
	* disclaimer.
	*
	* - 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.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	* SOFTWARE.
	*/

	#ifndef __T4_HW_H
	#define __T4_HW_H

	#include <linux/types.h>

	enum {
	NCHAN = 4, /* # of HW channels */
	MAX_MTU = 9600, /* max MAC MTU, excluding header + FCS */
	EEPROMSIZE = 17408, /* Serial EEPROM physical size */
	EEPROMVSIZE = 32768, /* Serial EEPROM virtual address space size */
	EEPROMPFSIZE = 1024, /* EEPROM writable area size for PFn, n>0 */
	RSS_NENTRIES = 2048, /* # of entries in RSS mapping table */
	TCB_SIZE = 128, /* TCB size */
	NMTUS = 16, /* size of MTU table */
	NCCTRL_WIN = 32, /* # of congestion control windows */
	NEXACT_MAC = 336, /* # of exact MAC address filters */
	L2T_SIZE = 4096, /* # of L2T entries */
	MBOX_LEN = 64, /* mailbox size in bytes */
	TRACE_LEN = 112, /* length of trace data and mask */
	FILTER_OPT_LEN = 36, /* filter tuple width for optional components */
	NWOL_PAT = 8, /* # of WoL patterns */
	WOL_PAT_LEN = 128, /* length of WoL patterns */
	};

	enum {
	SF_PAGE_SIZE = 256, /* serial flash page size */
	SF_SEC_SIZE = 64 * 1024, /* serial flash sector size */
	};

	enum { RSP_TYPE_FLBUF, RSP_TYPE_CPL, RSP_TYPE_INTR }; /* response entry types */

	enum { MBOX_OWNER_NONE, MBOX_OWNER_FW, MBOX_OWNER_DRV }; /* mailbox owners */

	enum {
	SGE_MAX_WR_LEN = 512, /* max WR size in bytes */
	SGE_NTIMERS = 6, /* # of interrupt holdoff timer values */
	SGE_NCOUNTERS = 4, /* # of interrupt packet counter values */

	SGE_TIMER_RSTRT_CNTR = 6, /* restart RX packet threshold counter */
	SGE_TIMER_UPD_CIDX = 7, /* update cidx only */

	SGE_EQ_IDXSIZE = 64, /* egress queue pidx/cidx unit size */

	SGE_INTRDST_PCI = 0, /* interrupt destination is PCI-E */
	SGE_INTRDST_IQ = 1, /* destination is an ingress queue */

	SGE_UPDATEDEL_NONE = 0, /* ingress queue pidx update delivery */
	SGE_UPDATEDEL_INTR = 1, /* interrupt */
	SGE_UPDATEDEL_STPG = 2, /* status page */
	SGE_UPDATEDEL_BOTH = 3, /* interrupt and status page */

	SGE_HOSTFCMODE_NONE = 0, /* egress queue cidx updates */
	SGE_HOSTFCMODE_IQ = 1, /* sent to ingress queue */
	SGE_HOSTFCMODE_STPG = 2, /* sent to status page */
	SGE_HOSTFCMODE_BOTH = 3, /* ingress queue and status page */

	SGE_FETCHBURSTMIN_16B = 0,/* egress queue descriptor fetch minimum */
	SGE_FETCHBURSTMIN_32B = 1,
	SGE_FETCHBURSTMIN_64B = 2,
	SGE_FETCHBURSTMIN_128B = 3,

	SGE_FETCHBURSTMAX_64B = 0,/* egress queue descriptor fetch maximum */
	SGE_FETCHBURSTMAX_128B = 1,
	SGE_FETCHBURSTMAX_256B = 2,
	SGE_FETCHBURSTMAX_512B = 3,

	SGE_CIDXFLUSHTHRESH_1 = 0,/* egress queue cidx flush threshold */
	SGE_CIDXFLUSHTHRESH_2 = 1,
	SGE_CIDXFLUSHTHRESH_4 = 2,
	SGE_CIDXFLUSHTHRESH_8 = 3,
	SGE_CIDXFLUSHTHRESH_16 = 4,
	SGE_CIDXFLUSHTHRESH_32 = 5,
	SGE_CIDXFLUSHTHRESH_64 = 6,
	SGE_CIDXFLUSHTHRESH_128 = 7,

	SGE_INGPADBOUNDARY_SHIFT = 5,/* ingress queue pad boundary */
	};

	struct sge_qstat { /* data written to SGE queue status entries */
	__be32 qid;
	__be16 cidx;
	__be16 pidx;
	};

	/*
	* Structure for last 128 bits of response descriptors
	*/
	struct rsp_ctrl {
	__be32 hdrbuflen_pidx;
	__be32 pldbuflen_qid;
	union {
	u8 type_gen;
	__be64 last_flit;
	};
	};

	#define RSPD_NEWBUF 0x80000000U
	#define RSPD_LEN(x) (((x) >> 0) & 0x7fffffffU)
	#define RSPD_QID(x) RSPD_LEN(x)

	#define RSPD_GEN(x) ((x) >> 7)
	#define RSPD_TYPE(x) (((x) >> 4) & 3)

	#define QINTR_CNT_EN 0x1
	#define QINTR_TIMER_IDX(x) ((x) << 1)
	#define QINTR_TIMER_IDX_GET(x) (((x) >> 1) & 0x7)

	/*
	* Flash layout.
	*/
	#define FLASH_START(start) ((start) * SF_SEC_SIZE)
	#define FLASH_MAX_SIZE(nsecs) ((nsecs) * SF_SEC_SIZE)

	enum {
	/*
	* Various Expansion-ROM boot images, etc.
	*/
	FLASH_EXP_ROM_START_SEC = 0,
	FLASH_EXP_ROM_NSECS = 6,
	FLASH_EXP_ROM_START = FLASH_START(FLASH_EXP_ROM_START_SEC),
	FLASH_EXP_ROM_MAX_SIZE = FLASH_MAX_SIZE(FLASH_EXP_ROM_NSECS),

	/*
	* iSCSI Boot Firmware Table (iBFT) and other driver-related
	* parameters ...
	*/
	FLASH_IBFT_START_SEC = 6,
	FLASH_IBFT_NSECS = 1,
	FLASH_IBFT_START = FLASH_START(FLASH_IBFT_START_SEC),
	FLASH_IBFT_MAX_SIZE = FLASH_MAX_SIZE(FLASH_IBFT_NSECS),

	/*
	* Boot configuration data.
	*/
	FLASH_BOOTCFG_START_SEC = 7,
	FLASH_BOOTCFG_NSECS = 1,
	FLASH_BOOTCFG_START = FLASH_START(FLASH_BOOTCFG_START_SEC),
	FLASH_BOOTCFG_MAX_SIZE = FLASH_MAX_SIZE(FLASH_BOOTCFG_NSECS),

	/*
	* Location of firmware image in FLASH.
	*/
	FLASH_FW_START_SEC = 8,
	FLASH_FW_NSECS = 8,
	FLASH_FW_START = FLASH_START(FLASH_FW_START_SEC),
	FLASH_FW_MAX_SIZE = FLASH_MAX_SIZE(FLASH_FW_NSECS),

	/*
	* iSCSI persistent/crash information.
	*/
	FLASH_ISCSI_CRASH_START_SEC = 29,
	FLASH_ISCSI_CRASH_NSECS = 1,
	FLASH_ISCSI_CRASH_START = FLASH_START(FLASH_ISCSI_CRASH_START_SEC),
	FLASH_ISCSI_CRASH_MAX_SIZE = FLASH_MAX_SIZE(FLASH_ISCSI_CRASH_NSECS),

	/*
	* FCoE persistent/crash information.
	*/
	FLASH_FCOE_CRASH_START_SEC = 30,
	FLASH_FCOE_CRASH_NSECS = 1,
	FLASH_FCOE_CRASH_START = FLASH_START(FLASH_FCOE_CRASH_START_SEC),
	FLASH_FCOE_CRASH_MAX_SIZE = FLASH_MAX_SIZE(FLASH_FCOE_CRASH_NSECS),

	/*
	* Location of Firmware Configuration File in FLASH. Since the FPGA
	* "FLASH" is smaller we need to store the Configuration File in a
	* different location -- which will overlap the end of the firmware
	* image if firmware ever gets that large ...
	*/
	FLASH_CFG_START_SEC = 31,
	FLASH_CFG_NSECS = 1,
	FLASH_CFG_START = FLASH_START(FLASH_CFG_START_SEC),
	FLASH_CFG_MAX_SIZE = FLASH_MAX_SIZE(FLASH_CFG_NSECS),

	FLASH_FPGA_CFG_START_SEC = 15,
	FLASH_FPGA_CFG_START = FLASH_START(FLASH_FPGA_CFG_START_SEC),

	/*
	* Sectors 32-63 are reserved for FLASH failover.
	*/
	};

	#undef FLASH_START
	#undef FLASH_MAX_SIZE

	#endif /* __T4_HW_H */