GSoC/kolibrios-nvme-driver
2
0
Fork 0
mirror of https://git.missingno.dev/kolibrios-nvme-driver/ synced 2025-02-07 12:46:51 +01:00
Code Issues 2 Actions Activity

feat: add support for consuming completion queues entries from multiple queues

Browse Source
This commit is contained in:
Abdur-Rahman Mansoor 2024-06-27 15:19:32 -04:00
parent ef8087f2fd
commit 5bc4a832f1
2 changed files with 16 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/nvme/nvme.asm
View File

@ -1023,6 +1023,8 @@ proc is_queue_full stdcall, tail:word, head:word
push bx push bx
mov ax, [tail] mov ax, [tail]
mov bx, [head] mov bx, [head]
cmp ax, bx
je .not_full
test bx, bx test bx, bx
jnz @f jnz @f
cmp ax, NVM_ASQS cmp ax, NVM_ASQS
@ -1033,15 +1035,15 @@ proc is_queue_full stdcall, tail:word, head:word
@@: @@:
cmp ax, bx cmp ax, bx
jge @f jge .not_full
sub ax, bx sub ax, bx
cmp ax, 1 cmp ax, 1
jne @f jne .not_full
xor eax, eax xor eax, eax
inc eax inc eax
ret ret
@@: .not_full:
pop bx pop bx
xor eax, eax xor eax, eax
ret ret
@ -1093,10 +1095,18 @@ proc irq_handler
mov edi, esi mov edi, esi
mov edi, dword [edi + pcidev.io_addr] mov edi, dword [edi + pcidev.io_addr]
mov dword [edi + NVME_MMIO.INTMS], 0x3 mov dword [edi + NVME_MMIO.INTMS], 0x3
stdcall consume_cq_entries, [p_nvme_devices], 0 xor ecx, ecx
mov dword [edi + NVME_MMIO.INTMC], 0x3
@@:
push ecx
stdcall consume_cq_entries, [p_nvme_devices], ecx
pop ecx
inc ecx
cmp ecx, LAST_QUEUE_ID
jne @b
; Interrupt handled by driver, return 1 ; Interrupt handled by driver, return 1
mov dword [edi + NVME_MMIO.INTMC], 0x3
pop edi esi pop edi esi
xor eax, eax xor eax, eax
inc eax inc eax

1
drivers/nvme/nvme.inc
View File

@ -20,6 +20,7 @@ NVM_CMDS = 64 ; Number of Commands
NVM_MPS = 0 ; Memory Page Size (2 ^ (12 + MPS)) NVM_MPS = 0 ; Memory Page Size (2 ^ (12 + MPS))
NVM_ASQS = 63 ; Admin Submission Queue Size NVM_ASQS = 63 ; Admin Submission Queue Size
NVM_ACQS = NVM_ASQS ; Admin Completion Queue Size NVM_ACQS = NVM_ASQS ; Admin Completion Queue Size
LAST_QUEUE_ID = 1 ; Index of the last queue
ADMIN_QUEUE = 0 ; Admin Queue ID ADMIN_QUEUE = 0 ; Admin Queue ID