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#define RIO_INB_ATMU_REGS_PORT1_OFFSET 0x10d60
54#define RIO_INB_ATMU_REGS_PORT2_OFFSET 0x10f60
55
56#define MAX_MSG_UNIT_NUM	2
57#define MAX_PORT_NUM		4
58#define RIO_INB_ATMU_COUNT	4
59
60struct rio_atmu_regs {
61	 u32 rowtar;
62	 u32 rowtear;
63	 u32 rowbar;
64	 u32 pad1;
65	 u32 rowar;
66	 u32 pad2[3];
67};
68
69struct rio_inb_atmu_regs {
70	u32 riwtar;
71	u32 pad1;
72	u32 riwbar;
73	u32 pad2;
74	u32 riwar;
75	u32 pad3[3];
76};
77
78struct rio_dbell_ring {
79	void *virt;
80	dma_addr_t phys;
81};
82
83struct rio_port_write_msg {
84	 void *virt;
85	 dma_addr_t phys;
86	 u32 msg_count;
87	 u32 err_count;
88	 u32 discard_count;
89};
90
91struct fsl_rio_dbell {
92	struct rio_mport *mport[MAX_PORT_NUM];
93	struct device *dev;
94	struct rio_dbell_regs __iomem *dbell_regs;
95	struct rio_dbell_ring dbell_ring;
96	int bellirq;
97};
98
99struct fsl_rio_pw {
100	struct device *dev;
101	struct rio_pw_regs __iomem *pw_regs;
102	struct rio_port_write_msg port_write_msg;
103	int pwirq;
104	struct work_struct pw_work;
105	struct kfifo pw_fifo;
106	spinlock_t pw_fifo_lock;
107};
108
109struct rio_priv {
110	struct device *dev;
111	void __iomem *regs_win;
112	struct rio_atmu_regs __iomem *atmu_regs;
113	struct rio_atmu_regs __iomem *maint_atmu_regs;
114	struct rio_inb_atmu_regs __iomem *inb_atmu_regs;
115	void __iomem *maint_win;
116	void *rmm_handle; /* RapidIO message manager(unit) Handle */
117};
118
119extern void __iomem *rio_regs_win;
120extern void __iomem *rmu_regs_win;
121
122extern resource_size_t rio_law_start;
123
124extern struct fsl_rio_dbell *dbell;
125extern struct fsl_rio_pw *pw;
126
127extern int fsl_rio_setup_rmu(struct rio_mport *mport,
128	struct device_node *node);
129extern int fsl_rio_port_write_init(struct fsl_rio_pw *pw);
130extern int fsl_rio_pw_enable(struct rio_mport *mport, int enable);
131extern void fsl_rio_port_error_handler(int offset);
132extern int fsl_rio_doorbell_init(struct fsl_rio_dbell *dbell);
133
134extern int fsl_rio_doorbell_send(struct rio_mport *mport,
135				int index, u16 destid, u16 data);
136extern int fsl_add_outb_message(struct rio_mport *mport,
137	struct rio_dev *rdev,
138	int mbox, void *buffer, size_t len);
139extern int fsl_open_outb_mbox(struct rio_mport *mport,
140	void *dev_id, int mbox, int entries);
141extern void fsl_close_outb_mbox(struct rio_mport *mport, int mbox);
142extern int fsl_open_inb_mbox(struct rio_mport *mport,
143	void *dev_id, int mbox, int entries);
144extern void fsl_close_inb_mbox(struct rio_mport *mport, int mbox);
145extern int fsl_add_inb_buffer(struct rio_mport *mport, int mbox, void *buf);
146extern void *fsl_get_inb_message(struct rio_mport *mport, int mbox);
147
148#endif
149