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: reserved */ 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 60 struct rio_atmu_regs { 61 u32 rowtar; 62 u32 rowtear; 63 u32 rowbar; 64 u32 pad1; 65 u32 rowar; 66 u32 pad2[3]; 67 }; 68 69 struct 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 78 struct rio_dbell_ring { 79 void *virt; 80 dma_addr_t phys; 81 }; 82 83 struct 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 91 struct 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 99 struct fsl_rio_pw { 100 struct rio_mport *mport[MAX_PORT_NUM]; 101 struct device *dev; 102 struct rio_pw_regs __iomem *pw_regs; 103 struct rio_port_write_msg port_write_msg; 104 int pwirq; 105 struct work_struct pw_work; 106 struct kfifo pw_fifo; 107 spinlock_t pw_fifo_lock; 108 }; 109 110 struct rio_priv { 111 struct device *dev; 112 void __iomem *regs_win; 113 struct rio_atmu_regs __iomem *atmu_regs; 114 struct rio_atmu_regs __iomem *maint_atmu_regs; 115 struct rio_inb_atmu_regs __iomem *inb_atmu_regs; 116 void __iomem *maint_win; 117 void *rmm_handle; /* RapidIO message manager(unit) Handle */ 118 }; 119 120 extern void __iomem *rio_regs_win; 121 extern void __iomem *rmu_regs_win; 122 123 extern resource_size_t rio_law_start; 124 125 extern struct fsl_rio_dbell *dbell; 126 extern struct fsl_rio_pw *pw; 127 128 extern int fsl_rio_setup_rmu(struct rio_mport *mport, 129 struct device_node *node); 130 extern int fsl_rio_port_write_init(struct fsl_rio_pw *pw); 131 extern int fsl_rio_pw_enable(struct rio_mport *mport, int enable); 132 extern void fsl_rio_port_error_handler(int offset); 133 extern int fsl_rio_doorbell_init(struct fsl_rio_dbell *dbell); 134 135 extern int fsl_rio_doorbell_send(struct rio_mport *mport, 136 int index, u16 destid, u16 data); 137 extern int fsl_add_outb_message(struct rio_mport *mport, 138 struct rio_dev *rdev, 139 int mbox, void *buffer, size_t len); 140 extern int fsl_open_outb_mbox(struct rio_mport *mport, 141 void *dev_id, int mbox, int entries); 142 extern void fsl_close_outb_mbox(struct rio_mport *mport, int mbox); 143 extern int fsl_open_inb_mbox(struct rio_mport *mport, 144 void *dev_id, int mbox, int entries); 145 extern void fsl_close_inb_mbox(struct rio_mport *mport, int mbox); 146 extern int fsl_add_inb_buffer(struct rio_mport *mport, int mbox, void *buf); 147 extern void *fsl_get_inb_message(struct rio_mport *mport, int mbox); 148 149 #endif 150