arch/powerpc/sysdev/fsl_rio.h

   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
  57 struct rio_atmu_regs {
  58          u32 rowtar;
  59          u32 rowtear;
  60          u32 rowbar;
  61          u32 pad1;
  62          u32 rowar;
  63          u32 pad2[3];
  64 };
  65
  66 struct rio_dbell_ring {
  67         void *virt;
  68         dma_addr_t phys;
  69 };
  70
  71 struct 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
  79 struct 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
  87 struct 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
  97 struct 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
 106 extern void __iomem *rio_regs_win;
 107 extern void __iomem *rmu_regs_win;
 108
 109 extern resource_size_t rio_law_start;
 110
 111 extern struct fsl_rio_dbell *dbell;
 112 extern struct fsl_rio_pw *pw;
 113
 114 extern int fsl_rio_setup_rmu(struct rio_mport *mport,
 115         struct device_node *node);
 116 extern int fsl_rio_port_write_init(struct fsl_rio_pw *pw);
 117 extern int fsl_rio_pw_enable(struct rio_mport *mport, int enable);
 118 extern void fsl_rio_port_error_handler(int offset);
 119 extern int fsl_rio_doorbell_init(struct fsl_rio_dbell *dbell);
 120
 121 extern int fsl_rio_doorbell_send(struct rio_mport *mport,
 122                                 int index, u16 destid, u16 data);
 123 extern int fsl_add_outb_message(struct rio_mport *mport,
 124         struct rio_dev *rdev,
 125         int mbox, void *buffer, size_t len);
 126 extern int fsl_open_outb_mbox(struct rio_mport *mport,
 127         void *dev_id, int mbox, int entries);
 128 extern void fsl_close_outb_mbox(struct rio_mport *mport, int mbox);
 129 extern int fsl_open_inb_mbox(struct rio_mport *mport,
 130         void *dev_id, int mbox, int entries);
 131 extern void fsl_close_inb_mbox(struct rio_mport *mport, int mbox);
 132 extern int fsl_add_inb_buffer(struct rio_mport *mport, int mbox, void *buf);
 133 extern void *fsl_get_inb_message(struct rio_mport *mport, int mbox);
 134
 135 #endif