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