Skip to content

ata: ahci: force 32-bit DMA for JMicron JMB582/JMB585 #504

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
HeyMeco merged 1 commit into from
Jun 14, 2026
+13 −0
Merged

ata: ahci: force 32-bit DMA for JMicron JMB582/JMB585 #504

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
13 changes: 13 additions & 0 deletions drivers/ata/ahci.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -61,6 +61,7 @@ enum board_ids {
/* board IDs for specific chipsets in alphabetical order */
board_ahci_al,
board_ahci_avn,
board_ahci_jmb585,
board_ahci_mcp65,
board_ahci_mcp77,
board_ahci_mcp89,
Expand Down Expand Up @@ -200,6 +201,15 @@ static const struct ata_port_info ahci_port_info[] = {
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_avn_ops,
},
/* JMicron JMB582/585: 64-bit DMA is broken, force 32-bit */
[board_ahci_jmb585] = {
AHCI_HFLAGS (AHCI_HFLAG_IGN_IRQ_IF_ERR |
AHCI_HFLAG_32BIT_ONLY),
.flags = AHCI_FLAG_COMMON,
.pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_ops,
},
[board_ahci_mcp65] = {
AHCI_HFLAGS (AHCI_HFLAG_NO_FPDMA_AA | AHCI_HFLAG_NO_PMP |
AHCI_HFLAG_YES_NCQ),
Expand Down Expand Up @@ -433,6 +443,9 @@ static const struct pci_device_id ahci_pci_tbl[] = {
/* Elkhart Lake IDs 0x4b60 & 0x4b62 https://sata-io.org/product/8803 not tested yet */
{ PCI_VDEVICE(INTEL, 0x4b63), board_ahci_low_power }, /* Elkhart Lake AHCI */

/* JMicron JMB582/585: force 32-bit DMA (broken 64-bit implementation) */
{ PCI_VDEVICE(JMICRON, 0x0582), board_ahci_jmb585 },
{ PCI_VDEVICE(JMICRON, 0x0585), board_ahci_jmb585 },
/* JMicron 360/1/3/5/6, match class to avoid IDE function */
{ PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci_ign_iferr },
Expand Down
Loading