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resource_table.h
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resource_table.h
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#ifndef _RSC_TABLE_PRU_H_
#define _RSC_TABLE_PRU_H_
#include <stddef.h> //needed for offset_of
#include <rsc_types.h>
#include "pru_virtio_ids.h"
#define MAX_CYCLES_WAITING 20000000
/*
* ECAP
*/
#define ECCTL1_CFG 0xC1EE /* DIV1,ENABLED,DELTA_MODE, RISING/FALLING */
#define ECCTL2_CFG 0x00DE /* RE-ARM, ECAP_MODE, RUN, SYNCO/I DISABLED, CONTINUOUS */
#define ECEINT_CFG 0x0000 /* none */
#define ECFLG_MSK 0x00FF /* none */
#define ECCLR_MSK 0x00FF /* clear all */
#define EC_STOP_MSK 0xFFEF /* stop ecap */
/*
* Sizes of the virtqueues (expressed in number of buffers supported,
* and must be power of 2)
*/
#define PRU_RPMSG_VQ0_SIZE 16
#define PRU_RPMSG_VQ1_SIZE 16
/*
* The feature bitmap for virtio rpmsg
*/
#define VIRTIO_RPMSG_F_NS 0 //name service notifications
/* This firmware supports name service notifications as one of its features */
#define RPMSG_PRU_C0_FEATURES (1 << VIRTIO_RPMSG_F_NS)
/* Definition for unused interrupts */
#define HOST_UNUSED 255
#ifdef PRU0
#define TO_ARM_HOST 16
#define FROM_ARM_HOST 17
#define PRU0_TO_ARM_CHANNEL 2
#define PRU0_FROM_ARM_CHANNEL 0
#define PRU1_TO_ARM_CHANNEL HOST_UNUSED
#define PRU1_FROM_ARM_CHANNEL HOST_UNUSED
#define HOST_INT 0x40000000
#define CHAN_NAME "mpu-6050"
#define CHAN_DESC "Channel 30"
#define CHAN_PORT 30
#define TO_ARM_CHANNEL PRU0_TO_ARM_CHANNEL
#define FROM_ARM_CHANNEL PRU0_FROM_ARM_CHANNEL
#endif
#ifdef PRU1
#define TO_ARM_HOST 18
#define FROM_ARM_HOST 19
#define PRU1_TO_ARM_CHANNEL 3
#define PRU1_FROM_ARM_CHANNEL 1
#define PRU0_TO_ARM_CHANNEL HOST_UNUSED
#define PRU0_FROM_ARM_CHANNEL HOST_UNUSED
#define HOST_INT 0x80000000
#define CHAN_NAME "mpu-6050"
#define CHAN_DESC "Channel 31"
#define CHAN_PORT 31
#define TO_ARM_CHANNEL PRU1_TO_ARM_CHANNEL
#define FROM_ARM_CHANNEL PRU1_FROM_ARM_CHANNEL
#endif
/* Mapping sysevts to a channel. Each pair contains a sysevt, channel. */
struct ch_map pru_intc_map[] = { {TO_ARM_HOST, TO_ARM_CHANNEL},
{FROM_ARM_HOST, FROM_ARM_CHANNEL},
};
struct my_resource_table {
struct resource_table base;
uint32_t offset[2]; /* Should match 'num' in actual definition */
/* rpmsg vdev entry */
struct fw_rsc_vdev rpmsg_vdev;
struct fw_rsc_vdev_vring rpmsg_vring0;
struct fw_rsc_vdev_vring rpmsg_vring1;
/* intc definition */
struct fw_rsc_custom pru_ints;
};
#pragma DATA_SECTION(resourceTable, ".resource_table")
#pragma RETAIN(resourceTable)
struct my_resource_table resourceTable = {
1, /* Resource table version: only version 1 is supported by the current driver */
2, /* number of entries in the table */
0, 0, /* reserved, must be zero */
/* offsets to entries */
{
offsetof(struct my_resource_table, rpmsg_vdev),
offsetof(struct my_resource_table, pru_ints),
},
/* rpmsg vdev entry */
{
(unsigned)TYPE_VDEV, //type
(unsigned)VIRTIO_ID_RPMSG, //id
(unsigned)0, //notifyid
(unsigned)RPMSG_PRU_C0_FEATURES, //dfeatures
(unsigned)0, //gfeatures
(unsigned)0, //config_len
(unsigned char)0, //status
(unsigned char)2, //num_of_vrings, only two is supported
{ (unsigned char)0, (unsigned char)0 }, //reserved
/* no config data */
},
/* the two vrings */
{
0, //da, will be populated by host, can't pass it in
16, //align (bytes),
PRU_RPMSG_VQ0_SIZE, //num of descriptors
0, //notifyid, will be populated, can't pass right now
0 //reserved
},
{
0, //da, will be populated by host, can't pass it in
16, //align (bytes),
PRU_RPMSG_VQ1_SIZE, //num of descriptors
0, //notifyid, will be populated, can't pass right now
0 //reserved
},
{
TYPE_CUSTOM, TYPE_PRU_INTS,
sizeof(struct fw_rsc_custom_ints),
{ /* PRU_INTS version */
0x0000,
/* Channel-to-host mapping, 255 for unused */
PRU0_FROM_ARM_CHANNEL, PRU1_FROM_ARM_CHANNEL, PRU0_TO_ARM_CHANNEL, PRU1_TO_ARM_CHANNEL, HOST_UNUSED,
HOST_UNUSED, HOST_UNUSED, HOST_UNUSED, HOST_UNUSED, HOST_UNUSED,
/* Number of evts being mapped to channels */
(sizeof(pru_intc_map) / sizeof(struct ch_map)),
/* Pointer to the structure containing mapped events */
pru_intc_map,
},
},
};
#endif /* _RSC_TABLE_PRU_H_ */
/*
* Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/