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

fix: remove long delay after set features cmd

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This also fixes the `nvme_cmd_wait` function.
This commit is contained in:
Abdur-Rahman Mansoor 2024-06-20 18:31:31 -04:00
parent ca5ccaa86b
commit 6360db0733
1 changed files with 10 additions and 6 deletions
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16
drivers/nvme/nvme.asm
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@ -566,15 +566,16 @@ proc nvme_init stdcall, pci:dword
mov eax, (NVM_ASQS - 1) or ((NVM_ACQS - 1) shl 16) ; CDW11 (set the number of queues we want)
stdcall set_features, [pci], NULLPTR, FID_NUMBER_OF_QUEUES, eax
mov esi, dword [p_nvme_devices]
stdcall nvme_wait, dword [esi + pcidev.io_addr]
;stdcall nvme_cmd_wait, [pci], 0, 1
;stdcall nvme_wait, dword [esi + pcidev.io_addr]
stdcall nvme_cmd_wait, [pci], 0, 1
mov esi, dword [esi + pcidev.queue_entries]
mov esi, dword [esi + NVM_QUEUE_ENTRY.cq_ptr]
mov eax, dword [esi + sizeof.CQ_ENTRY + CQ_ENTRY.cdw0]
test ax, ax
DEBUGF DBG_INFO, "(NVMe) Set Features CDW0: 0x%x\n", eax
test ax, ax ; Number of I/O Submission Queues allocated
jz .exit_fail
shl eax, 16
test ax, ax
test ax, ax ; Number of I/O Completion Queues allocated
jnz .exit_fail
; Create I/O Queues
@ -786,13 +787,16 @@ proc nvme_cmd_wait stdcall, pci:dword, y:byte, cid:word
push esi
mov esi, [pci]
movzx ecx, [cid]
imul ecx, sizeof.CQ_ENTRY
movzx edx, [y]
imul edx, sizeof.NVM_QUEUE_ENTRY
mov esi, dword [esi + pcidev.queue_entries]
lea esi, [esi + edx]
imul ecx, sizeof.CQ_ENTRY
mov esi, dword [esi + NVM_QUEUE_ENTRY.cq_ptr]
; WARNING: status bit flips on each pass, count for this later...
@@:
test byte [esi + CQ_ENTRY.status], CQ_PHASE_TAG
test byte [esi + ecx + CQ_ENTRY.status], CQ_PHASE_TAG
jz @b
pop esi
ret