nVME

include/drivers/nvme.h

struct nvme_command

Member Type	Member Name
uint8_t	opc
uint8_t	fuse
uint16_t	cid
uint32_t	nsid
uint64_t	rsvd2
uint64_t	mptr
uint64_t	prp1
uint64_t	prp2
uint32_t	cdw10
uint32_t	cdw11
uint32_t	cdw12
uint32_t	cdw13
uint32_t	cdw14
uint32_t	cdw15

struct nvme_completion

Member Type	Member Name
uint32_t	result
uint32_t	rsvd
uint16_t	sq_head
uint16_t	sq_id
uint16_t	cid
uint16_t	status

struct nvme_cc

Member Type	Member Name
union { uint32_t raw; struct { uint32_t en : 1; uint32_t __reserved0 : 3; uint32_t css : 3; uint32_t mps : 4; uint32_t ams : 3; uint32_t shn : 2; uint32_t iosqes : 4; uint32_t iocqes : 4; uint32_t __reserved1 : 8; }; }	None

struct nvme_regs

Member Type	Member Name
uint32_t	cap_lo
uint32_t	cap_hi
uint32_t	version
uint32_t	intms
uint32_t	intmc
struct nvme_cc	cc
uint32_t	nssr
uint32_t	csts
uint32_t	reserved1
uint32_t	aqa
uint32_t	asq_lo
uint32_t	asq_hi
uint32_t	acq_lo
uint32_t	acq_hi
uint32_t	reserved4[1018]

struct nvme_bio_data

Member Type	Member Name
uint64_t	*prps
uint64_t	prp_count

struct nvme_request

Member Type	Member Name
uint32_t	qid
uint64_t	lba
void	*buffer
uint64_t	size
uint64_t	sector_count
bool	write
bool	done
uint16_t	status
int32_t	remaining_parts
void	(*on_complete)(struct nvme_request *)
struct nvme_bio_data	*bio_data
struct thread	*waiter
void	*user_data
struct list_head	list_node

struct nvme_waiting_requests

Member Type	Member Name
struct spinlock	lock
struct list_head	list

struct nvme_queue

Member Type	Member Name
struct nvme_command	*sq
struct nvme_completion	*cq
uint64_t	sq_phys
uint64_t	cq_phys
uint16_t	sq_tail
uint16_t	cq_head
uint16_t	sq_depth
uint16_t	cq_depth
uint8_t	cq_phase
uint32_t	*sq_db
uint32_t	*cq_db
struct list_head	outgoing
uint16_t	outstanding
struct spinlock	lock

struct nvme_device

Member Type	Member Name
struct nvme_regs	*regs
uint64_t	cap
uint32_t	version
uint32_t	doorbell_stride
uint32_t	page_size
uint32_t	*admin_sq_db
uint32_t	*admin_cq_db
struct nvme_command	*admin_sq
struct nvme_completion	*admin_cq
uint64_t	admin_sq_phys
uint64_t	admin_cq_phys
uint16_t	admin_sq_tail
uint16_t	admin_cq_head
uint16_t	admin_q_depth
uint8_t	admin_cq_phase
struct nvme_queue	**io_queues
struct nvme_waiting_requests	waiting_requests
struct nvme_waiting_requests	finished_requests
struct work	work
atomic_bool	on_sem
struct semaphore	sem
uint8_t	*isr_index
uint32_t	queue_count
uint32_t	sector_size
uint64_t	max_transfer_size
struct generic_disk	*generic_disk
uint64_t	total_outstanding
struct workqueue	*workqueue

struct nvme_identify

Member Type	Member Name
uint8_t	data[PAGE_SIZE]

struct nvme_lbaf

Member Type	Member Name
uint16_t	ms
uint8_t	lbads
uint8_t	rp
uint8_t	reserved

struct nvme_identify_namespace

Member Type	Member Name
uint64_t	nsze
uint64_t	ncap
uint64_t	nuse
uint8_t	nsfeat
uint8_t	nlbaf
uint8_t	flbas
uint8_t	mc
uint8_t	dpc
uint8_t	dps
uint8_t	nmic
uint8_t	rescap
uint8_t	fpi
uint8_t	dlfeat
uint16_t	nawun
uint16_t	nawupf
uint16_t	nacwu
uint16_t	nabsn
uint16_t	nabo
uint16_t	nabspf
uint16_t	noiob
uint64_t	nvmcap[2]
uint16_t	npwg
uint16_t	npwa
uint16_t	npdg
uint16_t	npda
uint16_t	nows
uint16_t	mssrl
uint32_t	mcl
uint8_t	msrc
uint8_t	reserved0[11]
uint32_t	adagrpid
uint8_t	reserved1[3]
uint8_t	nsattr
uint16_t	nvmsetid
uint16_t	endgid
uint64_t	nguid[2]
uint64_t	eui64
struct nvme_lbaf	lbaf[64]
uint8_t	vendor_specific[3712]

struct nvme_identify_controller

Member Type	Member Name
uint16_t	vid
uint16_t	ssvid
char	sn[20]
char	mn[40]
char	fr[8]
uint8_t	rab
uint8_t	ieee[3]
uint8_t	mic
uint8_t	mdts
uint16_t	cntlid
uint32_t	ver
uint32_t	rtd3r
uint32_t	rtd3e
uint32_t	oaes
uint32_t	ctratt
uint8_t	rsvd96[156]
uint16_t	oacs
uint8_t	acl
uint8_t	aerl
uint8_t	frmw
uint8_t	lpa
uint8_t	elpe
uint8_t	npss
uint8_t	avscc
uint8_t	apsta
uint16_t	wctemp
uint16_t	cctemp
uint16_t	mtfa
uint32_t	hmpre
uint32_t	hmmin
uint64_t	tnvmcap[2]
uint64_t	unvmcap[2]
uint32_t	rpmbs
uint16_t	edstt
uint8_t	dsto
uint8_t	fwug
uint16_t	kas
uint16_t	hctma
uint16_t	mntmt
uint16_t	mxtmt
uint32_t	sanicap
uint8_t	rsvd228[180]
uint8_t	sqes
uint8_t	cqes

• uint16_t nvme_submit_admin_cmd(struct nvme_device *nvme,struct nvme_command *cmd,uint32_t *)
• uint32_t nvme_set_num_queues(struct nvme_device *nvme,uint16_t desired_sq,uint16_t desired_cq)
• void nvme_submit_io_cmd(struct nvme_device *nvme,struct nvme_command *cmd,uint32_t qid,struct nvme_request *req)
• uint8_t * nvme_identify_controller(struct nvme_device *nvme)
• uint8_t * nvme_identify_namespace(struct nvme_device *nvme,uint32_t nsid)
• void nvme_enable_controller(struct nvme_device *nvme)
• void nvme_setup_admin_queues(struct nvme_device *nvme)
• void nvme_alloc_admin_queues(struct nvme_device *nvme)
• void nvme_alloc_io_queues(struct nvme_device *nvme,uint32_t qid)
• struct nvme_device *nvme_discover_device(uint8_t bus,uint8_t slot,uint8_t func)
• struct generic_disk *nvme_create_generic(struct nvme_device *nvme)
• void nvme_print_identify(struct nvme_identify_controller *ctrl)
• void nvme_print_namespace(struct nvme_identify_namespace *ns)
• bool nvme_read_sector_wrapper(struct generic_disk *disk,uint64_t lba,uint8_t *buf,uint64_t cnt)
• bool nvme_read_sector_async_wrapper(struct generic_disk *disk,struct nvme_request *req)
• bool nvme_write_sector_async_wrapper(struct generic_disk *disk,struct nvme_request *req)
• bool nvme_send_nvme_req(struct generic_disk *d,struct nvme_request *r)
• bool nvme_write_sector_wrapper(struct generic_disk *disk,uint64_t lba,uint8_t *buf,uint64_t cnt)
• void nvme_isr_handler(void *ctx,uint8_t vector,void *rsp)
• bool nvme_submit_bio_request(struct generic_disk *disk,struct bio_request *bio)
• bool nvme_should_coalesce(struct generic_disk *disk,struct bio_request *a,struct bio_request *b)
• void nvme_do_coalesce(struct generic_disk *disk,struct bio_request *into,struct bio_request *from)
• void nvme_reorder(struct generic_disk *disk)
• void nvme_work(void *rvoid,void *dvoid)