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
146
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