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