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

add sqytdbl_write and cqyhdbl_write

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Abdur-Rahman Mansoor 2024-05-30 17:11:24 -04:00
parent 1197535b9c
commit a0cc2ec6a5
1 changed files with 23 additions and 6 deletions
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29
drivers/nvme/nvme.asm
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@ -337,7 +337,7 @@ proc nvme_init stdcall, pci:dword
; Attach interrupt handler ; Attach interrupt handler
movzx eax, byte [esi + pcidev.iline] movzx eax, byte [esi + pcidev.iline]
invoke AttachIntHandler, eax, irq_handler, 0 invoke AttachIntHandler, eax, irq_handler, esi
test eax, eax test eax, eax
jz .exit_fail jz .exit_fail
DEBUGF DBG_INFO, "(NVMe) Successfully attached interrupt handler\n" DEBUGF DBG_INFO, "(NVMe) Successfully attached interrupt handler\n"
@ -411,14 +411,31 @@ proc nvme_wait stdcall, mmio:dword
endp endp
proc cq0thbl_write stdcall, mmio:dword, dstrd:dword ; Writes to completion queue 'y' head doorbell
proc cqyhdbl_write stdcall, mmio:dword, dstrd:byte, y:byte
; 1000h + (2 * (4 << CAP.DSTRD)) ; 1000h + ((2y + 1) * (4 << CAP.DSTRD))
mov eax, [dstrd] xor ecx, ecx
shl eax, 4 shl ecx, [y]
imul eax, 2 inc ecx
mov eax, 4
shl eax, [dstrd]
imul eax, ecx
add eax, 0x1000 add eax, 0x1000
ret
endp
; Writes to submission queue 'y' tail doorbell
proc sqytdbl_write stdcall, mmio:dword, dstrd:byte, y:byte
; 1000h + (2y * (4 << CAP.DSTRD))
xor ecx, ecx
shl ecx, [y]
mov eax, 4
shl eax, [dstrd]
imul eax, ecx
add eax, 0x1000
ret ret
endp endp