GSoC/kolibrios-nvme-driver
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fix(nvme_readwrite): PRP2 checking

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Abdur-Rahman Mansoor 2024-07-08 16:30:29 -04:00
parent b21f83fef0
commit 66d24f8e49
1 changed files with 16 additions and 13 deletions
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29
drivers/nvme/nvme.asm
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@ -743,19 +743,20 @@ proc nvme_readwrite stdcall, ns:dword, dst:dword, start_sector:qword, numsectors
dword [esp + 8]
; assume command completes successfully for now
; Write PRP1
stdcall write_prp_buf, [ns], dword [esp], [dst], [numsectors_ptr]
test eax, eax
jz .end
; check if PRP2 should be a PRP list or a regular entry
; check if PRP2 is needed at all
mov ecx, dword [esi + NSINFO.pg_sectors]
mov eax, PAGE_SIZE
xor edx, edx
div ecx
mov ecx, eax
mov esi, dword [esp + 4]
cmp ebx, ecx
cmp ecx, ebx
jbe .end
; check if PRP2 should be a PRP list or a regular entry
shl ecx, 1
cmp ecx, ebx
ja .is_prp_list
; PRP2 is a PRP entry
@ -1166,15 +1167,18 @@ proc nvme_init stdcall, pci:dword
mov dword [ebx + NSINFO.lbads], eax
DEBUGF DBG_INFO, "nvme%un%u: Namespace LBA Data Size: %u\n", [esi + pcidev.num], [esi + pcidev.nsid], eax
invoke KernelFree, edi
invoke KernelAlloc, 0x1000
test eax, eax
jz .exit_fail
mov edi, eax
;stdcall memcpy, eax, test_string, 50
invoke GetPhysAddr
stdcall nvme_io_rw, [pci], 1, [esi + pcidev.nsid], eax, 0, 0, 0, 1, NVM_CMD_READ
DEBUGF DBG_INFO, "%s\n", edi
invoke KernelAlloc, 0x4
test eax, eax
jz .exit_fail
mov edx, NVM_CMD_READ
mov dword [eax], 0x1
stdcall nvme_readwrite, [esi + pcidev.nsinfo], edi, 1, eax
test eax, eax
jz .exit_fail
DEBUGF DBG_INFO, "nvme%u: Successfully initialized driver\n", [esi + pcidev.num]
xor eax, eax
inc eax
@ -1526,7 +1530,6 @@ align 4
dd 0 ; use default cache size
.end:
if __DEBUG__
test_string db "NVMe driver successfully wrote to disk! :D",0
include_debug_strings
end if