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/****************************************************************
* Resource table
****************************************************************/
#ifndef _RESOURCE_TABLE_H_
#define _RESOURCE_TABLE_H_
#include <stddef.h>
#include "pru_virtio_ids.h"
/*
* 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
struct my_resource_table {
struct resource_table base;
uint32_t offset[1]; /* 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;
};
#if !defined(__GNUC__)
#pragma DATA_SECTION(resourceTable, ".resource_table")
#pragma RETAIN(resourceTable)
#define __resource_table /* */
#else
#define __resource_table __attribute__((section(".resource_table")))
#endif
struct my_resource_table resourceTable __resource_table = {
{
1, /* Resource table version: only version 1 is
* supported by the current driver */
1, /* number of entries in the table */
{0, 0}, /* reserved, must be zero */
},
/* offsets to entries */
{
offsetof(struct my_resource_table, rpmsg_vdev),
},
/* rpmsg vdev entry */
{
(uint32_t)TYPE_VDEV, //type
(uint32_t)VIRTIO_ID_RPMSG, //id
(uint32_t)0, //notifyid
(uint32_t)RPMSG_PRU_C0_FEATURES,//dfeatures
(uint32_t)0, //gfeatures
(uint32_t)0, //config_len
(uint8_t)0, //status
(uint8_t)2, //num_of_vrings, only two is supported
{(uint8_t)0, (uint8_t)0 }, //reserved
/* no config data */
},
/* the two vrings */
{
FW_RSC_ADDR_ANY, //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
},
{
FW_RSC_ADDR_ANY, //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
},
};
#endif /* _RESOURCE_TABLE_H_ */
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