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Commit 80ff0fd3 authored by David Daney's avatar David Daney Committed by Ralf Baechle
Browse files

Staging: Add octeon-ethernet driver files.



The octeon-ethernet driver supports the sgmii, rgmii, spi, and xaui
ports present on the Cavium OCTEON family of SOCs.  These SOCs are
multi-core mips64 processors with existing support over in arch/mips.

The driver files can be categorized into three basic groups:

1) Register definitions, these are named cvmx-*-defs.h

2) Main driver code, these have names that don't start cvmx-.

3) Interface specific functions and other utility code, names starting
with cvmx-

Signed-off-by: default avatarDavid Daney <ddaney@caviumnetworks.com>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 38295fb2
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@@ -117,5 +117,7 @@ source "drivers/staging/serqt_usb/Kconfig"

source "drivers/gpu/drm/radeon/Kconfig"

source "drivers/staging/octeon/Kconfig"

endif # !STAGING_EXCLUDE_BUILD
endif # STAGING
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@@ -40,3 +40,4 @@ obj-$(CONFIG_PLAN9AUTH) += p9auth/
obj-$(CONFIG_HECI)		+= heci/
obj-$(CONFIG_LINE6_USB)		+= line6/
obj-$(CONFIG_USB_SERIAL_QUATECH_ESU100)	+= serqt_usb/
obj-$(CONFIG_OCTEON_ETHERNET)	+= octeon/
+12 −0
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config OCTEON_ETHERNET
	tristate "Cavium Networks Octeon Ethernet support"
	depends on CPU_CAVIUM_OCTEON
	select MII
	help
	  This driver supports the builtin ethernet ports on Cavium
	  Networks' products in the Octeon family. This driver supports the
	  CN3XXX and CN5XXX Octeon processors.

	  To compile this driver as a module, choose M here.  The module
	  will be called octeon-ethernet.
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# This file is subject to the terms and conditions of the GNU General Public
# License.  See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 2005-2009 Cavium Networks
#

#
# Makefile for Cavium OCTEON on-board ethernet driver
#

obj-${CONFIG_OCTEON_ETHERNET} :=  octeon-ethernet.o

octeon-ethernet-objs := ethernet.o
octeon-ethernet-objs += ethernet-common.o
octeon-ethernet-objs += ethernet-mdio.o
octeon-ethernet-objs += ethernet-mem.o
octeon-ethernet-objs += ethernet-proc.o
octeon-ethernet-objs += ethernet-rgmii.o
octeon-ethernet-objs += ethernet-rx.o
octeon-ethernet-objs += ethernet-sgmii.o
octeon-ethernet-objs += ethernet-spi.o
octeon-ethernet-objs += ethernet-tx.o
octeon-ethernet-objs += ethernet-xaui.o
octeon-ethernet-objs += cvmx-pko.o cvmx-spi.o cvmx-cmd-queue.o \
	cvmx-helper-board.o cvmx-helper.o cvmx-helper-xaui.o \
	cvmx-helper-rgmii.o cvmx-helper-sgmii.o cvmx-helper-npi.o \
	cvmx-helper-loop.o cvmx-helper-spi.o cvmx-helper-util.o \
	cvmx-interrupt-decodes.o cvmx-interrupt-rsl.o
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/***********************license start***************
 * Author: Cavium Networks
 *
 * Contact: support@caviumnetworks.com
 * This file is part of the OCTEON SDK
 *
 * Copyright (c) 2003-2009 Cavium Networks
 *
 * This file is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, Version 2, as
 * published by the Free Software Foundation.
 *
 * This file is distributed in the hope that it will be useful, but
 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
 * NONINFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this file; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 * or visit http://www.gnu.org/licenses/.
 *
 * This file may also be available under a different license from Cavium.
 * Contact Cavium Networks for more information
 ***********************license end**************************************/

/**
 * Typedefs and defines for working with Octeon physical addresses.
 *
 */
#ifndef __CVMX_ADDRESS_H__
#define __CVMX_ADDRESS_H__

#if 0
typedef enum {
	CVMX_MIPS_SPACE_XKSEG = 3LL,
	CVMX_MIPS_SPACE_XKPHYS = 2LL,
	CVMX_MIPS_SPACE_XSSEG = 1LL,
	CVMX_MIPS_SPACE_XUSEG = 0LL
} cvmx_mips_space_t;
#endif

typedef enum {
	CVMX_MIPS_XKSEG_SPACE_KSEG0 = 0LL,
	CVMX_MIPS_XKSEG_SPACE_KSEG1 = 1LL,
	CVMX_MIPS_XKSEG_SPACE_SSEG = 2LL,
	CVMX_MIPS_XKSEG_SPACE_KSEG3 = 3LL
} cvmx_mips_xkseg_space_t;

/* decodes <14:13> of a kseg3 window address */
typedef enum {
	CVMX_ADD_WIN_SCR = 0L,
	/* see cvmx_add_win_dma_dec_t for further decode */
	CVMX_ADD_WIN_DMA = 1L,
	CVMX_ADD_WIN_UNUSED = 2L,
	CVMX_ADD_WIN_UNUSED2 = 3L
} cvmx_add_win_dec_t;

/* decode within DMA space */
typedef enum {
	/*
	 * Add store data to the write buffer entry, allocating it if
	 * necessary.
	 */
	CVMX_ADD_WIN_DMA_ADD = 0L,
	/* send out the write buffer entry to DRAM */
	CVMX_ADD_WIN_DMA_SENDMEM = 1L,
	/* store data must be normal DRAM memory space address in this case */
	/* send out the write buffer entry as an IOBDMA command */
	CVMX_ADD_WIN_DMA_SENDDMA = 2L,
	/* see CVMX_ADD_WIN_DMA_SEND_DEC for data contents */
	/* send out the write buffer entry as an IO write */
	CVMX_ADD_WIN_DMA_SENDIO = 3L,
	/* store data must be normal IO space address in this case */
	/* send out a single-tick command on the NCB bus */
	CVMX_ADD_WIN_DMA_SENDSINGLE = 4L,
	/* no write buffer data needed/used */
} cvmx_add_win_dma_dec_t;

/*
 *   Physical Address Decode
 *
 * Octeon-I HW never interprets this X (<39:36> reserved
 * for future expansion), software should set to 0.
 *
 *  - 0x0 XXX0 0000 0000 to      DRAM         Cached
 *  - 0x0 XXX0 0FFF FFFF
 *
 *  - 0x0 XXX0 1000 0000 to      Boot Bus     Uncached  (Converted to 0x1 00X0 1000 0000
 *  - 0x0 XXX0 1FFF FFFF         + EJTAG                           to 0x1 00X0 1FFF FFFF)
 *
 *  - 0x0 XXX0 2000 0000 to      DRAM         Cached
 *  - 0x0 XXXF FFFF FFFF
 *
 *  - 0x1 00X0 0000 0000 to      Boot Bus     Uncached
 *  - 0x1 00XF FFFF FFFF
 *
 *  - 0x1 01X0 0000 0000 to      Other NCB    Uncached
 *  - 0x1 FFXF FFFF FFFF         devices
 *
 * Decode of all Octeon addresses
 */
typedef union {

	uint64_t u64;
	/* mapped or unmapped virtual address */
	struct {
		uint64_t R:2;
		uint64_t offset:62;
	} sva;

	/* mapped USEG virtual addresses (typically) */
	struct {
		uint64_t zeroes:33;
		uint64_t offset:31;
	} suseg;

	/* mapped or unmapped virtual address */
	struct {
		uint64_t ones:33;
		uint64_t sp:2;
		uint64_t offset:29;
	} sxkseg;

	/*
	 * physical address accessed through xkphys unmapped virtual
	 * address.
	 */
	struct {
		uint64_t R:2;	/* CVMX_MIPS_SPACE_XKPHYS in this case */
		uint64_t cca:3;	/* ignored by octeon */
		uint64_t mbz:10;
		uint64_t pa:49;	/* physical address */
	} sxkphys;

	/* physical address */
	struct {
		uint64_t mbz:15;
		/* if set, the address is uncached and resides on MCB bus */
		uint64_t is_io:1;
		/*
		 * the hardware ignores this field when is_io==0, else
		 * device ID.
		 */
		uint64_t did:8;
		/* the hardware ignores <39:36> in Octeon I */
		uint64_t unaddr:4;
		uint64_t offset:36;
	} sphys;

	/* physical mem address */
	struct {
		/* techically, <47:40> are dont-cares */
		uint64_t zeroes:24;
		/* the hardware ignores <39:36> in Octeon I */
		uint64_t unaddr:4;
		uint64_t offset:36;
	} smem;

	/* physical IO address */
	struct {
		uint64_t mem_region:2;
		uint64_t mbz:13;
		/* 1 in this case */
		uint64_t is_io:1;
		/*
		 * The hardware ignores this field when is_io==0, else
		 * device ID.
		 */
		uint64_t did:8;
		/* the hardware ignores <39:36> in Octeon I */
		uint64_t unaddr:4;
		uint64_t offset:36;
	} sio;

	/*
	 * Scratchpad virtual address - accessed through a window at
	 * the end of kseg3
	 */
	struct {
		uint64_t ones:49;
		/* CVMX_ADD_WIN_SCR (0) in this case */
		cvmx_add_win_dec_t csrdec:2;
		uint64_t addr:13;
	} sscr;

	/* there should only be stores to IOBDMA space, no loads */
	/*
	 * IOBDMA virtual address - accessed through a window at the
	 * end of kseg3
	 */
	struct {
		uint64_t ones:49;
		uint64_t csrdec:2;	/* CVMX_ADD_WIN_DMA (1) in this case */
		uint64_t unused2:3;
		uint64_t type:3;
		uint64_t addr:7;
	} sdma;

	struct {
		uint64_t didspace:24;
		uint64_t unused:40;
	} sfilldidspace;

} cvmx_addr_t;

/* These macros for used by 32 bit applications */

#define CVMX_MIPS32_SPACE_KSEG0 1l
#define CVMX_ADD_SEG32(segment, add) \
	(((int32_t)segment << 31) | (int32_t)(add))

/*
 * Currently all IOs are performed using XKPHYS addressing. Linux uses
 * the CvmMemCtl register to enable XKPHYS addressing to IO space from
 * user mode.  Future OSes may need to change the upper bits of IO
 * addresses. The following define controls the upper two bits for all
 * IO addresses generated by the simple executive library.
 */
#define CVMX_IO_SEG CVMX_MIPS_SPACE_XKPHYS

/* These macros simplify the process of creating common IO addresses */
#define CVMX_ADD_SEG(segment, add) ((((uint64_t)segment) << 62) | (add))
#ifndef CVMX_ADD_IO_SEG
#define CVMX_ADD_IO_SEG(add) CVMX_ADD_SEG(CVMX_IO_SEG, (add))
#endif
#define CVMX_ADDR_DIDSPACE(did) (((CVMX_IO_SEG) << 22) | ((1ULL) << 8) | (did))
#define CVMX_ADDR_DID(did) (CVMX_ADDR_DIDSPACE(did) << 40)
#define CVMX_FULL_DID(did, subdid) (((did) << 3) | (subdid))

  /* from include/ncb_rsl_id.v */
#define CVMX_OCT_DID_MIS 0ULL	/* misc stuff */
#define CVMX_OCT_DID_GMX0 1ULL
#define CVMX_OCT_DID_GMX1 2ULL
#define CVMX_OCT_DID_PCI 3ULL
#define CVMX_OCT_DID_KEY 4ULL
#define CVMX_OCT_DID_FPA 5ULL
#define CVMX_OCT_DID_DFA 6ULL
#define CVMX_OCT_DID_ZIP 7ULL
#define CVMX_OCT_DID_RNG 8ULL
#define CVMX_OCT_DID_IPD 9ULL
#define CVMX_OCT_DID_PKT 10ULL
#define CVMX_OCT_DID_TIM 11ULL
#define CVMX_OCT_DID_TAG 12ULL
  /* the rest are not on the IO bus */
#define CVMX_OCT_DID_L2C 16ULL
#define CVMX_OCT_DID_LMC 17ULL
#define CVMX_OCT_DID_SPX0 18ULL
#define CVMX_OCT_DID_SPX1 19ULL
#define CVMX_OCT_DID_PIP 20ULL
#define CVMX_OCT_DID_ASX0 22ULL
#define CVMX_OCT_DID_ASX1 23ULL
#define CVMX_OCT_DID_IOB 30ULL

#define CVMX_OCT_DID_PKT_SEND       CVMX_FULL_DID(CVMX_OCT_DID_PKT, 2ULL)
#define CVMX_OCT_DID_TAG_SWTAG      CVMX_FULL_DID(CVMX_OCT_DID_TAG, 0ULL)
#define CVMX_OCT_DID_TAG_TAG1       CVMX_FULL_DID(CVMX_OCT_DID_TAG, 1ULL)
#define CVMX_OCT_DID_TAG_TAG2       CVMX_FULL_DID(CVMX_OCT_DID_TAG, 2ULL)
#define CVMX_OCT_DID_TAG_TAG3       CVMX_FULL_DID(CVMX_OCT_DID_TAG, 3ULL)
#define CVMX_OCT_DID_TAG_NULL_RD    CVMX_FULL_DID(CVMX_OCT_DID_TAG, 4ULL)
#define CVMX_OCT_DID_TAG_CSR        CVMX_FULL_DID(CVMX_OCT_DID_TAG, 7ULL)
#define CVMX_OCT_DID_FAU_FAI        CVMX_FULL_DID(CVMX_OCT_DID_IOB, 0ULL)
#define CVMX_OCT_DID_TIM_CSR        CVMX_FULL_DID(CVMX_OCT_DID_TIM, 0ULL)
#define CVMX_OCT_DID_KEY_RW         CVMX_FULL_DID(CVMX_OCT_DID_KEY, 0ULL)
#define CVMX_OCT_DID_PCI_6          CVMX_FULL_DID(CVMX_OCT_DID_PCI, 6ULL)
#define CVMX_OCT_DID_MIS_BOO        CVMX_FULL_DID(CVMX_OCT_DID_MIS, 0ULL)
#define CVMX_OCT_DID_PCI_RML        CVMX_FULL_DID(CVMX_OCT_DID_PCI, 0ULL)
#define CVMX_OCT_DID_IPD_CSR        CVMX_FULL_DID(CVMX_OCT_DID_IPD, 7ULL)
#define CVMX_OCT_DID_DFA_CSR        CVMX_FULL_DID(CVMX_OCT_DID_DFA, 7ULL)
#define CVMX_OCT_DID_MIS_CSR        CVMX_FULL_DID(CVMX_OCT_DID_MIS, 7ULL)
#define CVMX_OCT_DID_ZIP_CSR        CVMX_FULL_DID(CVMX_OCT_DID_ZIP, 0ULL)

#endif /* __CVMX_ADDRESS_H__ */
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