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-rw-r--r--drivers/bus/vmbus/private.h132
1 files changed, 132 insertions, 0 deletions
diff --git a/drivers/bus/vmbus/private.h b/drivers/bus/vmbus/private.h
new file mode 100644
index 00000000..9964fc42
--- /dev/null
+++ b/drivers/bus/vmbus/private.h
@@ -0,0 +1,132 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (c) 2018, Microsoft Corporation.
+ * All Rights Reserved.
+ */
+
+#ifndef _VMBUS_PRIVATE_H_
+#define _VMBUS_PRIVATE_H_
+
+#include <stdbool.h>
+#include <sys/uio.h>
+#include <rte_log.h>
+#include <rte_vmbus_reg.h>
+
+#ifndef PAGE_SIZE
+#define PAGE_SIZE 4096
+#endif
+
+extern int vmbus_logtype_bus;
+#define VMBUS_LOG(level, fmt, args...) \
+ rte_log(RTE_LOG_ ## level, vmbus_logtype_bus, "%s(): " fmt "\n", \
+ __func__, ##args)
+
+struct vmbus_br {
+ struct vmbus_bufring *vbr;
+ uint32_t dsize;
+ uint32_t windex; /* next available location */
+};
+
+#define UIO_NAME_MAX 64
+
+struct vmbus_map {
+ void *addr; /* user mmap of resource */
+ uint64_t size; /* length */
+};
+
+/*
+ * For multi-process we need to reproduce all vmbus mappings in secondary
+ * processes, so save them in a tailq.
+ */
+struct mapped_vmbus_resource {
+ TAILQ_ENTRY(mapped_vmbus_resource) next;
+
+ rte_uuid_t id;
+ int nb_maps;
+ struct vmbus_map maps[VMBUS_MAX_RESOURCE];
+ char path[PATH_MAX];
+};
+
+TAILQ_HEAD(mapped_vmbus_res_list, mapped_vmbus_resource);
+
+#define HV_MON_TRIG_LEN 32
+#define HV_MON_TRIG_MAX 4
+
+struct vmbus_channel {
+ STAILQ_HEAD(, vmbus_channel) subchannel_list;
+ STAILQ_ENTRY(vmbus_channel) next;
+ const struct rte_vmbus_device *device;
+
+ struct vmbus_br rxbr;
+ struct vmbus_br txbr;
+
+ uint16_t relid;
+ uint16_t subchannel_id;
+ uint8_t monitor_id;
+};
+
+#define VMBUS_MAX_CHANNELS 64
+
+int vmbus_chan_create(const struct rte_vmbus_device *device,
+ uint16_t relid, uint16_t subid, uint8_t monitor_id,
+ struct vmbus_channel **new_chan);
+
+void vmbus_add_device(struct rte_vmbus_device *vmbus_dev);
+void vmbus_insert_device(struct rte_vmbus_device *exist_vmbus_dev,
+ struct rte_vmbus_device *new_vmbus_dev);
+void vmbus_remove_device(struct rte_vmbus_device *vmbus_device);
+
+void vmbus_uio_irq_control(struct rte_vmbus_device *dev, int32_t onoff);
+int vmbus_uio_irq_read(struct rte_vmbus_device *dev);
+
+int vmbus_uio_map_resource(struct rte_vmbus_device *dev);
+void vmbus_uio_unmap_resource(struct rte_vmbus_device *dev);
+
+int vmbus_uio_alloc_resource(struct rte_vmbus_device *dev,
+ struct mapped_vmbus_resource **uio_res);
+void vmbus_uio_free_resource(struct rte_vmbus_device *dev,
+ struct mapped_vmbus_resource *uio_res);
+
+struct mapped_vmbus_resource *
+vmbus_uio_find_resource(const struct rte_vmbus_device *dev);
+int vmbus_uio_map_resource_by_index(struct rte_vmbus_device *dev, int res_idx,
+ struct mapped_vmbus_resource *uio_res,
+ int flags);
+
+void *vmbus_map_resource(void *requested_addr, int fd, off_t offset,
+ size_t size, int additional_flags);
+void vmbus_unmap_resource(void *requested_addr, size_t size);
+
+bool vmbus_uio_subchannels_supported(const struct rte_vmbus_device *dev,
+ const struct vmbus_channel *chan);
+int vmbus_uio_get_subchan(struct vmbus_channel *primary,
+ struct vmbus_channel **subchan);
+int vmbus_uio_map_rings(struct vmbus_channel *chan);
+
+void vmbus_br_setup(struct vmbus_br *br, void *buf, unsigned int blen);
+
+/* Amount of space available for write */
+static inline uint32_t
+vmbus_br_availwrite(const struct vmbus_br *br, uint32_t windex)
+{
+ uint32_t rindex = br->vbr->rindex;
+
+ if (windex >= rindex)
+ return br->dsize - (windex - rindex);
+ else
+ return rindex - windex;
+}
+
+static inline uint32_t
+vmbus_br_availread(const struct vmbus_br *br)
+{
+ return br->dsize - vmbus_br_availwrite(br, br->vbr->windex);
+}
+
+int vmbus_txbr_write(struct vmbus_br *tbr, const struct iovec iov[], int iovlen,
+ bool *need_sig);
+
+int vmbus_rxbr_peek(const struct vmbus_br *rbr, void *data, size_t dlen);
+
+int vmbus_rxbr_read(struct vmbus_br *rbr, void *data, size_t dlen, size_t hlen);
+
+#endif /* _VMBUS_PRIVATE_H_ */