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/*-
* BSD LICENSE
*
* Copyright (c) Intel Corporation.
* All rights reserved.
*
* 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 Intel Corporation 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.
*/
#ifndef __IOAT_INTERNAL_H__
#define __IOAT_INTERNAL_H__
#include "spdk/stdinc.h"
#include "spdk/ioat.h"
#include "spdk/ioat_spec.h"
#include "spdk/queue.h"
#include "spdk/mmio.h"
/* Allocate 1 << 15 (32K) descriptors per channel by default. */
#define IOAT_DEFAULT_ORDER 15
struct ioat_descriptor {
uint64_t phys_addr;
spdk_ioat_req_cb callback_fn;
void *callback_arg;
};
/* One of these per allocated PCI device. */
struct spdk_ioat_chan {
/* Opaque handle to upper layer */
struct spdk_pci_device *device;
uint64_t max_xfer_size;
volatile struct spdk_ioat_registers *regs;
volatile uint64_t *comp_update;
uint32_t head;
uint32_t tail;
uint32_t ring_size_order;
uint64_t last_seen;
struct ioat_descriptor *ring;
union spdk_ioat_hw_desc *hw_ring;
uint32_t dma_capabilities;
/* tailq entry for attached_chans */
TAILQ_ENTRY(spdk_ioat_chan) tailq;
};
static inline uint32_t
is_ioat_active(uint64_t status)
{
return (status & SPDK_IOAT_CHANSTS_STATUS) == SPDK_IOAT_CHANSTS_ACTIVE;
}
static inline uint32_t
is_ioat_idle(uint64_t status)
{
return (status & SPDK_IOAT_CHANSTS_STATUS) == SPDK_IOAT_CHANSTS_IDLE;
}
static inline uint32_t
is_ioat_halted(uint64_t status)
{
return (status & SPDK_IOAT_CHANSTS_STATUS) == SPDK_IOAT_CHANSTS_HALTED;
}
static inline uint32_t
is_ioat_suspended(uint64_t status)
{
return (status & SPDK_IOAT_CHANSTS_STATUS) == SPDK_IOAT_CHANSTS_SUSPENDED;
}
#endif /* __IOAT_INTERNAL_H__ */
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