LXR linux/arch/powerpc/sysdev/fsl

   1/*
   2 * Freescale MPC85xx/MPC86xx RapidIO support
   3 *
   4 * Copyright 2009 Sysgo AG
   5 * Thomas Moll <thomas.moll@sysgo.com>
   6 * - fixed maintenance access routines, check for aligned access
   7 *
   8 * Copyright 2009 Integrated Device Technology, Inc.
   9 * Alex Bounine <alexandre.bounine@idt.com>
  10 * - Added Port-Write message handling
  11 * - Added Machine Check exception handling
  12 *
  13 * Copyright (C) 2007, 2008, 2010, 2011 Freescale Semiconductor, Inc.
  14 * Zhang Wei <wei.zhang@freescale.com>
  15 * Lian Minghuan-B31939 <Minghuan.Lian@freescale.com>
  16 * Liu Gang <Gang.Liu@freescale.com>
  17 *
  18 * Copyright 2005 MontaVista Software, Inc.
  19 * Matt Porter <mporter@kernel.crashing.org>
  20 *
  21 * This program is free software; you can redistribute  it and/or modify it
  22 * under  the terms of  the GNU General  Public License as published by the
  23 * Free Software Foundation;  either version 2 of the  License, or (at your
  24 * option) any later version.
  25 */
  26
  27#ifndef __FSL_RIO_H
  28#define __FSL_RIO_H
  29
  30#include <linux/rio.h>
  31#include <linux/rio_drv.h>
  32#include <linux/kfifo.h>
  33
  34#define RIO_REGS_WIN(mport)     (((struct rio_priv *)(mport->priv))->regs_win)
  35
  36#define RIO_MAINT_WIN_SIZE      0x400000
  37#define RIO_LTLEDCSR            0x0608
  38
  39#define DOORBELL_ROWAR_EN       0x80000000
  40#define DOORBELL_ROWAR_TFLOWLV  0x08000000 /* highest priority level */
  41#define DOORBELL_ROWAR_PCI      0x02000000 /* PCI window */
  42#define DOORBELL_ROWAR_NREAD    0x00040000 /* NREAD */
  43#define DOORBELL_ROWAR_MAINTRD  0x00070000  /* maintenance read */
  44#define DOORBELL_ROWAR_RES      0x00002000 /* wrtpy: reserverd */
  45#define DOORBELL_ROWAR_MAINTWD  0x00007000
  46#define DOORBELL_ROWAR_SIZE     0x0000000b /* window size is 4k */
  47
  48#define RIO_ATMU_REGS_PORT1_OFFSET      0x10c00
  49#define RIO_ATMU_REGS_PORT2_OFFSET      0x10e00
  50#define RIO_S_DBELL_REGS_OFFSET 0x13400
  51#define RIO_S_PW_REGS_OFFSET    0x134e0
  52#define RIO_ATMU_REGS_DBELL_OFFSET      0x10C40
  53
  54#define MAX_MSG_UNIT_NUM        2
  55#define MAX_PORT_NUM            4
  56
  57struct rio_atmu_regs {
  58         u32 rowtar;
  59         u32 rowtear;
  60         u32 rowbar;
  61         u32 pad1;
  62         u32 rowar;
  63         u32 pad2[3];
  64};
  65
  66struct rio_dbell_ring {
  67        void *virt;
  68        dma_addr_t phys;
  69};
  70
  71struct rio_port_write_msg {
  72         void *virt;
  73         dma_addr_t phys;
  74         u32 msg_count;
  75         u32 err_count;
  76         u32 discard_count;
  77};
  78
  79struct fsl_rio_dbell {
  80        struct rio_mport *mport[MAX_PORT_NUM];
  81        struct device *dev;
  82        struct rio_dbell_regs __iomem *dbell_regs;
  83        struct rio_dbell_ring dbell_ring;
  84        int bellirq;
  85};
  86
  87struct fsl_rio_pw {
  88        struct device *dev;
  89        struct rio_pw_regs __iomem *pw_regs;
  90        struct rio_port_write_msg port_write_msg;
  91        int pwirq;
  92        struct work_struct pw_work;
  93        struct kfifo pw_fifo;
  94        spinlock_t pw_fifo_lock;
  95};
  96
  97struct rio_priv {
  98        struct device *dev;
  99        void __iomem *regs_win;
 100        struct rio_atmu_regs __iomem *atmu_regs;
 101        struct rio_atmu_regs __iomem *maint_atmu_regs;
 102        void __iomem *maint_win;
 103        void *rmm_handle; /* RapidIO message manager(unit) Handle */
 104};
 105
 106extern void __iomem *rio_regs_win;
 107extern void __iomem *rmu_regs_win;
 108
 109extern resource_size_t rio_law_start;
 110
 111extern struct fsl_rio_dbell *dbell;
 112extern struct fsl_rio_pw *pw;
 113
 114extern int fsl_rio_setup_rmu(struct rio_mport *mport,
 115        struct device_node *node);
 116extern int fsl_rio_port_write_init(struct fsl_rio_pw *pw);
 117extern int fsl_rio_pw_enable(struct rio_mport *mport, int enable);
 118extern void fsl_rio_port_error_handler(int offset);
 119extern int fsl_rio_doorbell_init(struct fsl_rio_dbell *dbell);
 120
 121extern int fsl_rio_doorbell_send(struct rio_mport *mport,
 122                                int index, u16 destid, u16 data);
 123extern int fsl_add_outb_message(struct rio_mport *mport,
 124        struct rio_dev *rdev,
 125        int mbox, void *buffer, size_t len);
 126extern int fsl_open_outb_mbox(struct rio_mport *mport,
 127        void *dev_id, int mbox, int entries);
 128extern void fsl_close_outb_mbox(struct rio_mport *mport, int mbox);
 129extern int fsl_open_inb_mbox(struct rio_mport *mport,
 130        void *dev_id, int mbox, int entries);
 131extern void fsl_close_inb_mbox(struct rio_mport *mport, int mbox);
 132extern int fsl_add_inb_buffer(struct rio_mport *mport, int mbox, void *buf);
 133extern void *fsl_get_inb_message(struct rio_mport *mport, int mbox);
 134
 135#endif
 136