arch/powerpc/sysdev/fsl_rio.h

   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
  56 struct rio_atmu_regs {
  57          u32 rowtar;
  58          u32 rowtear;
  59          u32 rowbar;
  60          u32 pad1;
  61          u32 rowar;
  62          u32 pad2[3];
  63 };
  64
  65 struct 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
  74 struct rio_dbell_ring {
  75         void *virt;
  76         dma_addr_t phys;
  77 };
  78
  79 struct 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
  87 struct 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
  95 struct 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
 106 struct 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
 116 extern void __iomem *rio_regs_win;
 117 extern void __iomem *rmu_regs_win;
 118
 119 extern resource_size_t rio_law_start;
 120
 121 extern struct fsl_rio_dbell *dbell;
 122 extern struct fsl_rio_pw *pw;
 123
 124 extern int fsl_rio_setup_rmu(struct rio_mport *mport,
 125         struct device_node *node);
 126 extern int fsl_rio_port_write_init(struct fsl_rio_pw *pw);
 127 extern int fsl_rio_pw_enable(struct rio_mport *mport, int enable);
 128 extern void fsl_rio_port_error_handler(int offset);
 129 extern int fsl_rio_doorbell_init(struct fsl_rio_dbell *dbell);
 130
 131 extern int fsl_rio_doorbell_send(struct rio_mport *mport,
 132                                 int index, u16 destid, u16 data);
 133 extern int fsl_add_outb_message(struct rio_mport *mport,
 134         struct rio_dev *rdev,
 135         int mbox, void *buffer, size_t len);
 136 extern int fsl_open_outb_mbox(struct rio_mport *mport,
 137         void *dev_id, int mbox, int entries);
 138 extern void fsl_close_outb_mbox(struct rio_mport *mport, int mbox);
 139 extern int fsl_open_inb_mbox(struct rio_mport *mport,
 140         void *dev_id, int mbox, int entries);
 141 extern void fsl_close_inb_mbox(struct rio_mport *mport, int mbox);
 142 extern int fsl_add_inb_buffer(struct rio_mport *mport, int mbox, void *buf);
 143 extern void *fsl_get_inb_message(struct rio_mport *mport, int mbox);
 144
 145 #endif