GSoC/kolibrios-nvme-driver
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Code Issues 2 Actions Activity

initialize command entries

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This commit is contained in:
Abdur-Rahman Mansoor 2024-07-30 17:22:28 -04:00
parent 6a8ab65661
commit a88a44c627
2 changed files with 35 additions and 6 deletions
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33
drivers/nvme/nvme.asm
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@ -963,7 +963,8 @@ proc nvme_init stdcall, pci:dword
; Allocate submission/completion queue pointers
; TODO: Make these queues physically contiguous
xor ecx, ecx
@@:
.init_queues:
push ecx
invoke CreateRingBuffer, 0x1000, PG_SW
pop ecx
@ -979,10 +980,38 @@ proc nvme_init stdcall, pci:dword
mov dword [edi + ecx + NVM_QUEUE_ENTRY.cq_ptr], eax
push ecx
stdcall memsetdz, eax, sizeof.CQ_ENTRY * CQ_ENTRIES / 4
; Initialize command entries
invoke KernelAlloc, sizeof.NVMQCMD * CQ_ENTRIES
pop ecx
test eax, eax
jz .exit_fail
mov dword [edi + ecx + NVM_QUEUE_ENTRY.cmd_ptr], eax
mov esi, eax
push ecx
xor ecx, ecx
.init_cmd_entries:
push ecx
; BUG: Won't pop ecx if allocation fails
invoke KernelAlloc, sizeof.MUTEX
test eax, eax
jz .exit_fail
pop ecx
mov dword [esi + ecx * NVMQCMD.mutex_ptr], eax
mov dword [esi + ecx * NVMQCMD.cid], ecx
push ecx
mov ecx, eax
invoke MutexInit
pop ecx
inc ecx
cmp ecx, CQ_ENTRIES
jne .init_cmd_entries
pop ecx
add ecx, sizeof.NVM_QUEUE_ENTRY
cmp ecx, (LAST_QUEUE_ID + 1) * sizeof.NVM_QUEUE_ENTRY
jne @b
jne .init_queues
; Configure Admin Submission/Completion Queue Base Address
mov esi, [pci]

8
drivers/nvme/nvme.inc
View File

@ -343,9 +343,9 @@ ends
TOTAL_PCIDEVS = 4
TOTAL_PCIDEVS_MALLOC_SZ = TOTAL_PCIDEVS * sizeof.pcidev
struct DPTR
prp1 dd ?
prp2 dd ?
struct NVMQCMD
cid dd ?
mutex_ptr MUTEX
ends
struct NVM_QUEUE_ENTRY
@ -353,7 +353,7 @@ struct NVM_QUEUE_ENTRY
head dw ?
sq_ptr dd ?
cq_ptr dd ?
cid_slots dq ?
cmd_ptr dd ?
ends
; Identify Controller Data Structure