LXR linux/arch/powerpc/sysdev/fsl

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3 * Freescale MPC85xx/MPC86xx RapidIO support
   4 *
   5 * Copyright 2009 Sysgo AG
   6 * Thomas Moll <thomas.moll@sysgo.com>
   7 * - fixed maintenance access routines, check for aligned access
   8 *
   9 * Copyright 2009 Integrated Device Technology, Inc.
  10 * Alex Bounine <alexandre.bounine@idt.com>
  11 * - Added Port-Write message handling
  12 * - Added Machine Check exception handling
  13 *
  14 * Copyright (C) 2007, 2008, 2010, 2011 Freescale Semiconductor, Inc.
  15 * Zhang Wei <wei.zhang@freescale.com>
  16 * Lian Minghuan-B31939 <Minghuan.Lian@freescale.com>
  17 * Liu Gang <Gang.Liu@freescale.com>
  18 *
  19 * Copyright 2005 MontaVista Software, Inc.
  20 * Matt Porter <mporter@kernel.crashing.org>
  21 */
  22
  23#ifndef __FSL_RIO_H
  24#define __FSL_RIO_H
  25
  26#include <linux/rio.h>
  27#include <linux/rio_drv.h>
  28#include <linux/kfifo.h>
  29
  30#define RIO_REGS_WIN(mport)     (((struct rio_priv *)(mport->priv))->regs_win)
  31
  32#define RIO_MAINT_WIN_SIZE      0x400000
  33#define RIO_LTLEDCSR            0x0608
  34
  35#define DOORBELL_ROWAR_EN       0x80000000
  36#define DOORBELL_ROWAR_TFLOWLV  0x08000000 /* highest priority level */
  37#define DOORBELL_ROWAR_PCI      0x02000000 /* PCI window */
  38#define DOORBELL_ROWAR_NREAD    0x00040000 /* NREAD */
  39#define DOORBELL_ROWAR_MAINTRD  0x00070000  /* maintenance read */
  40#define DOORBELL_ROWAR_RES      0x00002000 /* wrtpy: reserved */
  41#define DOORBELL_ROWAR_MAINTWD  0x00007000
  42#define DOORBELL_ROWAR_SIZE     0x0000000b /* window size is 4k */
  43
  44#define RIO_ATMU_REGS_PORT1_OFFSET      0x10c00
  45#define RIO_ATMU_REGS_PORT2_OFFSET      0x10e00
  46#define RIO_S_DBELL_REGS_OFFSET 0x13400
  47#define RIO_S_PW_REGS_OFFSET    0x134e0
  48#define RIO_ATMU_REGS_DBELL_OFFSET      0x10C40
  49#define RIO_INB_ATMU_REGS_PORT1_OFFSET 0x10d60
  50#define RIO_INB_ATMU_REGS_PORT2_OFFSET 0x10f60
  51
  52#define MAX_MSG_UNIT_NUM        2
  53#define MAX_PORT_NUM            4
  54#define RIO_INB_ATMU_COUNT      4
  55
  56struct rio_atmu_regs {
  57         u32 rowtar;
  58         u32 rowtear;
  59         u32 rowbar;
  60         u32 pad1;
  61         u32 rowar;
  62         u32 pad2[3];
  63};
  64
  65struct rio_inb_atmu_regs {
  66        u32 riwtar;
  67        u32 pad1;
  68        u32 riwbar;
  69        u32 pad2;
  70        u32 riwar;
  71        u32 pad3[3];
  72};
  73
  74struct rio_dbell_ring {
  75        void *virt;
  76        dma_addr_t phys;
  77};
  78
  79struct rio_port_write_msg {
  80         void *virt;
  81         dma_addr_t phys;
  82         u32 msg_count;
  83         u32 err_count;
  84         u32 discard_count;
  85};
  86
  87struct fsl_rio_dbell {
  88        struct rio_mport *mport[MAX_PORT_NUM];
  89        struct device *dev;
  90        struct rio_dbell_regs __iomem *dbell_regs;
  91        struct rio_dbell_ring dbell_ring;
  92        int bellirq;
  93};
  94
  95struct fsl_rio_pw {
  96        struct rio_mport *mport[MAX_PORT_NUM];
  97        struct device *dev;
  98        struct rio_pw_regs __iomem *pw_regs;
  99        struct rio_port_write_msg port_write_msg;
 100        int pwirq;
 101        struct work_struct pw_work;
 102        struct kfifo pw_fifo;
 103        spinlock_t pw_fifo_lock;
 104};
 105
 106struct rio_priv {
 107        struct device *dev;
 108        void __iomem *regs_win;
 109        struct rio_atmu_regs __iomem *atmu_regs;
 110        struct rio_atmu_regs __iomem *maint_atmu_regs;
 111        struct rio_inb_atmu_regs __iomem *inb_atmu_regs;
 112        void __iomem *maint_win;
 113        void *rmm_handle; /* RapidIO message manager(unit) Handle */
 114};
 115
 116extern void __iomem *rio_regs_win;
 117extern void __iomem *rmu_regs_win;
 118
 119extern resource_size_t rio_law_start;
 120
 121extern struct fsl_rio_dbell *dbell;
 122extern struct fsl_rio_pw *pw;
 123
 124extern int fsl_rio_setup_rmu(struct rio_mport *mport,
 125        struct device_node *node);
 126extern int fsl_rio_port_write_init(struct fsl_rio_pw *pw);
 127extern int fsl_rio_pw_enable(struct rio_mport *mport, int enable);
 128extern void fsl_rio_port_error_handler(int offset);
 129extern int fsl_rio_doorbell_init(struct fsl_rio_dbell *dbell);
 130
 131extern int fsl_rio_doorbell_send(struct rio_mport *mport,
 132                                int index, u16 destid, u16 data);
 133extern int fsl_add_outb_message(struct rio_mport *mport,
 134        struct rio_dev *rdev,
 135        int mbox, void *buffer, size_t len);
 136extern int fsl_open_outb_mbox(struct rio_mport *mport,
 137        void *dev_id, int mbox, int entries);
 138extern void fsl_close_outb_mbox(struct rio_mport *mport, int mbox);
 139extern int fsl_open_inb_mbox(struct rio_mport *mport,
 140        void *dev_id, int mbox, int entries);
 141extern void fsl_close_inb_mbox(struct rio_mport *mport, int mbox);
 142extern int fsl_add_inb_buffer(struct rio_mport *mport, int mbox, void *buf);
 143extern void *fsl_get_inb_message(struct rio_mport *mport, int mbox);
 144
 145#endif
 146