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/*
* Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of Hyra 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 _IC_NVMEREGS_H_
#define _IC_NVMEREGS_H_
#include <sys/types.h>
#include <sys/param.h>
/* Controller Capabilities */
#define CAP_MPSMIN(caps) ((caps >> 48) & 0xF)
#define CAP_MPSMAX(caps) ((caps >> 52) & 0xF)
#define CAP_TIMEOUT(caps) ((caps >> 24) & 0xFF)
#define CAP_STRIDE(caps) ((caps >> 32) & 0xF)
#define CAP_MQES(caps) (caps & 0xFFFF)
#define CAP_CSS(caps) (caps & 0xFF)
/* Controller Configuration */
#define CONFIG_EN BIT(0)
#define CONFIG_CSS_SHIFT 4
#define CONFIG_IOSQES_SHIFT 16
#define CONFIG_IOCQES_SHIFT 20
/* Controller status */
#define STATUS_RDY BIT(0)
#define STATUS_CFS BIT(1)
/* Command sets supported */
#define CSS_NVM BIT(0)
#define CSS_IO BIT(6)
#define CSS_NO_IO BIT(7)
/* NVMe controller */
struct nvme_bar {
volatile uint64_t caps;
volatile uint32_t version;
volatile uint32_t intms; /* Interrupt mask set */
volatile uint32_t intmc; /* Interrupt mask clear */
volatile uint32_t config;
volatile uint32_t unused1;
volatile uint32_t status;
volatile uint32_t unused2;
volatile uint32_t aqa; /* Admin queue attributes */
volatile uint64_t asq; /* Admin submission queue */
volatile uint64_t acq; /* Admin completion queue */
};
#endif /* !_IC_NVMEREGS_H_ */
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