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

more bloat removal

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This commit is contained in:
Abdur-Rahman Mansoor 2024-07-23 14:59:08 -04:00
parent 835840231f
commit a5c1920c0e
2 changed files with 10 additions and 19 deletions
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27
drivers/nvme/nvme.asm
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@ -163,7 +163,10 @@ proc nvme_query_media stdcall, userdata:dword, info:dword
mov ebx, dword [esi + NSINFO.pci]
mov edi, [info]
mov dword [edi + DISKMEDIAINFO.flags], 0
mov eax, dword [esi + NSINFO.lbads]
mov cl, byte [esi + NSINFO.lbads]
xor eax, eax
inc eax
shl eax, cl
DEBUGF DBG_INFO, "nvme%un%u (Query Media): Sector size = %u\n", [ebx + pcidev.num], [esi + NSINFO.nsid], eax
mov dword [edi + DISKMEDIAINFO.sectorsize], eax
mov eax, dword [esi + NSINFO.capacity]
@ -574,12 +577,6 @@ proc alloc_dptr stdcall, ns:dword, prps_ptr:dword, numsectors:dword, prp_list_pt
mov cl, byte [esi + NSINFO.lbads]
mov ebx, PAGE_SIZE
shr ebx, cl
mov eax, edx
cmp eax, ebx
jbe @f
sub eax, ebx
@@:
mov edx, [numsectors]
; is the buffer offset portion equal to 0?
@ -591,7 +588,7 @@ proc alloc_dptr stdcall, ns:dword, prps_ptr:dword, numsectors:dword, prp_list_pt
; is the number of sectors less than or equal to one memory page?
cmp edx, ebx
jbe .success
shl eax, 1 ; it is page aligned, so set eax to 2 memory pages
shl ebx, 1 ; it is page aligned, so set ebx to 2 memory pages
@@:
; is the number of sectors greater than one or two memory pages?
@ -1089,21 +1086,15 @@ proc nvme_init stdcall, pci:dword
mov dword [ebx + NSINFO.capacity + 4], eax
;DEBUGF DBG_INFO, "nvme%un%u: Namespace Size: %u + %u logical blocks\n", [esi + pcidev.num], [esi + pcidev.nsid], [edi + IDENTN.nsze], [edi + IDENTN.nsze + 4]
;DEBUGF DBG_INFO, "nvme%un%u: Namespace Capacity: %u + %u logical blocks\n", [esi + pcidev.num], [esi + pcidev.nsid], [edi + IDENTN.ncap], [edi + IDENTN.ncap + 4]
mov ecx, dword [edi + IDENTN.lbaf0]
shr ecx, 16 ; Get LBADS
and ecx, 0xff
movzx edx, cl
dec ecx
mov eax, 2
shl eax, cl
DEBUGF DBG_INFO, "nvme%un%u: Namespace LBA Data Size: %u\n", [esi + pcidev.num], [esi + pcidev.nsid], eax
mov eax, dword [edi + IDENTN.lbaf0]
shr eax, 16 ; Get LBADS
; KolibriOS only supports a LBADS of 512, so if it's a higher value then we
; have to ignore this namespace
cmp eax, SUPPORTED_LBADS
cmp al, SUPPORTED_LBADS
jne .exit_fail
mov dword [ebx + NSINFO.lbads], eax
mov byte [ebx + NSINFO.lbads], al
invoke KernelFree, edi
if 0
invoke KernelAlloc, 0x6000

2
drivers/nvme/nvme.inc
View File

@ -24,7 +24,7 @@ LAST_QUEUE_ID = 1 ; Index of the last queue
SQ_ENTRIES = NVM_ASQS ; I/O and Admin Submission Queue Size
CQ_ENTRIES = NVM_ACQS ; I/O and Admin Completion Queue Size
PAGE_SIZE = 4096 shl NVM_MPS
SUPPORTED_LBADS = 512 ; KolibriOS only supports LBADS of 512, later on we may remove this restriction
SUPPORTED_LBADS = 9 ; KolibriOS only supports LBADS of 512, later on we may remove this restriction
ADMIN_QUEUE = 0 ; Admin Queue ID