^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * RapidIO configuration space access support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright 2005 MontaVista Software, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Matt Porter <mporter@kernel.crashing.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/rio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/rio_drv.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * Wrappers for all RIO configuration access functions. They just check
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * alignment and call the low-level functions pointed to by rio_mport->ops.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define RIO_8_BAD 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define RIO_16_BAD (offset & 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define RIO_32_BAD (offset & 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * RIO_LOP_READ - Generate rio_local_read_config_* functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * @size: Size of configuration space read (8, 16, 32 bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * @type: C type of value argument
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * @len: Length of configuration space read (1, 2, 4 bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * Generates rio_local_read_config_* functions used to access
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * configuration space registers on the local device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define RIO_LOP_READ(size,type,len) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) int __rio_local_read_config_##size \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) (struct rio_mport *mport, u32 offset, type *value) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) int res; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) u32 data = 0; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) res = mport->ops->lcread(mport, mport->id, offset, len, &data); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) *value = (type)data; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) return res; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * RIO_LOP_WRITE - Generate rio_local_write_config_* functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * @size: Size of configuration space write (8, 16, 32 bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * @type: C type of value argument
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * @len: Length of configuration space write (1, 2, 4 bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * Generates rio_local_write_config_* functions used to access
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * configuration space registers on the local device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define RIO_LOP_WRITE(size,type,len) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) int __rio_local_write_config_##size \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) (struct rio_mport *mport, u32 offset, type value) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return mport->ops->lcwrite(mport, mport->id, offset, len, value);\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) RIO_LOP_READ(8, u8, 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) RIO_LOP_READ(16, u16, 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) RIO_LOP_READ(32, u32, 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) RIO_LOP_WRITE(8, u8, 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) RIO_LOP_WRITE(16, u16, 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) RIO_LOP_WRITE(32, u32, 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) EXPORT_SYMBOL_GPL(__rio_local_read_config_8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) EXPORT_SYMBOL_GPL(__rio_local_read_config_16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) EXPORT_SYMBOL_GPL(__rio_local_read_config_32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) EXPORT_SYMBOL_GPL(__rio_local_write_config_8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) EXPORT_SYMBOL_GPL(__rio_local_write_config_16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) EXPORT_SYMBOL_GPL(__rio_local_write_config_32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * RIO_OP_READ - Generate rio_mport_read_config_* functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * @size: Size of configuration space read (8, 16, 32 bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * @type: C type of value argument
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * @len: Length of configuration space read (1, 2, 4 bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * Generates rio_mport_read_config_* functions used to access
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * configuration space registers on the local device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define RIO_OP_READ(size,type,len) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) int rio_mport_read_config_##size \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) (struct rio_mport *mport, u16 destid, u8 hopcount, u32 offset, type *value) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) int res; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) u32 data = 0; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) res = mport->ops->cread(mport, mport->id, destid, hopcount, offset, len, &data); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) *value = (type)data; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return res; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * RIO_OP_WRITE - Generate rio_mport_write_config_* functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * @size: Size of configuration space write (8, 16, 32 bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * @type: C type of value argument
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * @len: Length of configuration space write (1, 2, 4 bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * Generates rio_mport_write_config_* functions used to access
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * configuration space registers on the local device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #define RIO_OP_WRITE(size,type,len) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) int rio_mport_write_config_##size \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) (struct rio_mport *mport, u16 destid, u8 hopcount, u32 offset, type value) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return mport->ops->cwrite(mport, mport->id, destid, hopcount, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) offset, len, value); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) RIO_OP_READ(8, u8, 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) RIO_OP_READ(16, u16, 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) RIO_OP_READ(32, u32, 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) RIO_OP_WRITE(8, u8, 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) RIO_OP_WRITE(16, u16, 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) RIO_OP_WRITE(32, u32, 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) EXPORT_SYMBOL_GPL(rio_mport_read_config_8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) EXPORT_SYMBOL_GPL(rio_mport_read_config_16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) EXPORT_SYMBOL_GPL(rio_mport_read_config_32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) EXPORT_SYMBOL_GPL(rio_mport_write_config_8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) EXPORT_SYMBOL_GPL(rio_mport_write_config_16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) EXPORT_SYMBOL_GPL(rio_mport_write_config_32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * rio_mport_send_doorbell - Send a doorbell message
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * @mport: RIO master port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * @destid: RIO device destination ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * @data: Doorbell message data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * Send a doorbell message to a RIO device. The doorbell message
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * has a 16-bit info field provided by the data argument.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) int rio_mport_send_doorbell(struct rio_mport *mport, u16 destid, u16 data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) return mport->ops->dsend(mport, mport->id, destid, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) EXPORT_SYMBOL_GPL(rio_mport_send_doorbell);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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