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ata: ahci: Drop low power policy board type
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The low power policy board type was introduced to allow systems
to get into deep states reliably.  Before it was introduced `min_power`
was causing problems for a number of drives.  New power policies
`min_power_with_partial` and `med_power_with_dipm` have been introduced
which provide a more stable baseline for systems.

Tested-by: Damien Le Moal <dlemoal@kernel.org>
Tested-by: Jian-Hong Pan <jhp@endlessos.org>
Acked-by: Jian-Hong Pan <jhp@endlessos.org>
Acked-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Suggested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
[cassel: rebase patch and fix trivial conflicts]
Signed-off-by: Niklas Cassel <cassel@kernel.org>
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Mario Limonciello authored and Niklas Cassel committed Feb 9, 2024
1 parent ae1f3db commit 7627a0e
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5 changes: 2 additions & 3 deletions drivers/ata/Kconfig
View file
Original file line number Diff line number Diff line change
Expand Up @@ -116,15 +116,14 @@ config SATA_AHCI
If unsure, say N.

config SATA_MOBILE_LPM_POLICY
int "Default SATA Link Power Management policy for low power chipsets"
int "Default SATA Link Power Management policy"
range 0 4
default 0
depends on SATA_AHCI
help
Select the Default SATA Link Power Management (LPM) policy to use
for chipsets / "South Bridges" supporting low-power modes. Such
chipsets are typically found on most laptops but desktops and
servers now also widely use chipsets supporting low power modes.
chipsets are ubiquitous across laptops, desktops and servers.

The value set has the following meanings:
0 => Keep firmware settings
Expand Down
109 changes: 48 additions & 61 deletions drivers/ata/ahci.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -50,7 +50,6 @@ enum board_ids {
board_ahci,
board_ahci_43bit_dma,
board_ahci_ign_iferr,
board_ahci_low_power,
board_ahci_no_debounce_delay,
board_ahci_nomsi,
board_ahci_noncq,
Expand Down Expand Up @@ -143,13 +142,6 @@ static const struct ata_port_info ahci_port_info[] = {
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_ops,
},
[board_ahci_low_power] = {
AHCI_HFLAGS (AHCI_HFLAG_USE_LPM_POLICY),
.flags = AHCI_FLAG_COMMON,
.pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_ops,
},
[board_ahci_no_debounce_delay] = {
.flags = AHCI_FLAG_COMMON,
.link_flags = ATA_LFLAG_NO_DEBOUNCE_DELAY,
Expand Down Expand Up @@ -283,13 +275,13 @@ static const struct pci_device_id ahci_pci_tbl[] = {
{ PCI_VDEVICE(INTEL, 0x2924), board_ahci }, /* ICH9 */
{ PCI_VDEVICE(INTEL, 0x2925), board_ahci }, /* ICH9 */
{ PCI_VDEVICE(INTEL, 0x2927), board_ahci }, /* ICH9 */
{ PCI_VDEVICE(INTEL, 0x2929), board_ahci_low_power }, /* ICH9M */
{ PCI_VDEVICE(INTEL, 0x292a), board_ahci_low_power }, /* ICH9M */
{ PCI_VDEVICE(INTEL, 0x292b), board_ahci_low_power }, /* ICH9M */
{ PCI_VDEVICE(INTEL, 0x292c), board_ahci_low_power }, /* ICH9M */
{ PCI_VDEVICE(INTEL, 0x292f), board_ahci_low_power }, /* ICH9M */
{ PCI_VDEVICE(INTEL, 0x2929), board_ahci }, /* ICH9M */
{ PCI_VDEVICE(INTEL, 0x292a), board_ahci }, /* ICH9M */
{ PCI_VDEVICE(INTEL, 0x292b), board_ahci }, /* ICH9M */
{ PCI_VDEVICE(INTEL, 0x292c), board_ahci }, /* ICH9M */
{ PCI_VDEVICE(INTEL, 0x292f), board_ahci }, /* ICH9M */
{ PCI_VDEVICE(INTEL, 0x294d), board_ahci }, /* ICH9 */
{ PCI_VDEVICE(INTEL, 0x294e), board_ahci_low_power }, /* ICH9M */
{ PCI_VDEVICE(INTEL, 0x294e), board_ahci }, /* ICH9M */
{ PCI_VDEVICE(INTEL, 0x502a), board_ahci }, /* Tolapai */
{ PCI_VDEVICE(INTEL, 0x502b), board_ahci }, /* Tolapai */
{ PCI_VDEVICE(INTEL, 0x3a05), board_ahci }, /* ICH10 */
Expand All @@ -299,9 +291,9 @@ static const struct pci_device_id ahci_pci_tbl[] = {
{ PCI_VDEVICE(INTEL, 0x3b23), board_ahci }, /* PCH AHCI */
{ PCI_VDEVICE(INTEL, 0x3b24), board_ahci }, /* PCH RAID */
{ PCI_VDEVICE(INTEL, 0x3b25), board_ahci }, /* PCH RAID */
{ PCI_VDEVICE(INTEL, 0x3b29), board_ahci_low_power }, /* PCH M AHCI */
{ PCI_VDEVICE(INTEL, 0x3b29), board_ahci }, /* PCH M AHCI */
{ PCI_VDEVICE(INTEL, 0x3b2b), board_ahci }, /* PCH RAID */
{ PCI_VDEVICE(INTEL, 0x3b2c), board_ahci_low_power }, /* PCH M RAID */
{ PCI_VDEVICE(INTEL, 0x3b2c), board_ahci }, /* PCH M RAID */
{ PCI_VDEVICE(INTEL, 0x3b2f), board_ahci }, /* PCH AHCI */
{ PCI_VDEVICE(INTEL, 0x19b0), board_ahci_pcs7 }, /* DNV AHCI */
{ PCI_VDEVICE(INTEL, 0x19b1), board_ahci_pcs7 }, /* DNV AHCI */
Expand All @@ -324,39 +316,39 @@ static const struct pci_device_id ahci_pci_tbl[] = {
{ PCI_VDEVICE(INTEL, 0x19cE), board_ahci_pcs7 }, /* DNV AHCI */
{ PCI_VDEVICE(INTEL, 0x19cF), board_ahci_pcs7 }, /* DNV AHCI */
{ PCI_VDEVICE(INTEL, 0x1c02), board_ahci }, /* CPT AHCI */
{ PCI_VDEVICE(INTEL, 0x1c03), board_ahci_low_power }, /* CPT M AHCI */
{ PCI_VDEVICE(INTEL, 0x1c03), board_ahci }, /* CPT M AHCI */
{ PCI_VDEVICE(INTEL, 0x1c04), board_ahci }, /* CPT RAID */
{ PCI_VDEVICE(INTEL, 0x1c05), board_ahci_low_power }, /* CPT M RAID */
{ PCI_VDEVICE(INTEL, 0x1c05), board_ahci }, /* CPT M RAID */
{ PCI_VDEVICE(INTEL, 0x1c06), board_ahci }, /* CPT RAID */
{ PCI_VDEVICE(INTEL, 0x1c07), board_ahci }, /* CPT RAID */
{ PCI_VDEVICE(INTEL, 0x1d02), board_ahci }, /* PBG AHCI */
{ PCI_VDEVICE(INTEL, 0x1d04), board_ahci }, /* PBG RAID */
{ PCI_VDEVICE(INTEL, 0x1d06), board_ahci }, /* PBG RAID */
{ PCI_VDEVICE(INTEL, 0x2323), board_ahci }, /* DH89xxCC AHCI */
{ PCI_VDEVICE(INTEL, 0x1e02), board_ahci }, /* Panther Point AHCI */
{ PCI_VDEVICE(INTEL, 0x1e03), board_ahci_low_power }, /* Panther M AHCI */
{ PCI_VDEVICE(INTEL, 0x1e03), board_ahci }, /* Panther M AHCI */
{ PCI_VDEVICE(INTEL, 0x1e04), board_ahci }, /* Panther Point RAID */
{ PCI_VDEVICE(INTEL, 0x1e05), board_ahci }, /* Panther Point RAID */
{ PCI_VDEVICE(INTEL, 0x1e06), board_ahci }, /* Panther Point RAID */
{ PCI_VDEVICE(INTEL, 0x1e07), board_ahci_low_power }, /* Panther M RAID */
{ PCI_VDEVICE(INTEL, 0x1e07), board_ahci }, /* Panther M RAID */
{ PCI_VDEVICE(INTEL, 0x1e0e), board_ahci }, /* Panther Point RAID */
{ PCI_VDEVICE(INTEL, 0x8c02), board_ahci }, /* Lynx Point AHCI */
{ PCI_VDEVICE(INTEL, 0x8c03), board_ahci_low_power }, /* Lynx M AHCI */
{ PCI_VDEVICE(INTEL, 0x8c03), board_ahci }, /* Lynx M AHCI */
{ PCI_VDEVICE(INTEL, 0x8c04), board_ahci }, /* Lynx Point RAID */
{ PCI_VDEVICE(INTEL, 0x8c05), board_ahci_low_power }, /* Lynx M RAID */
{ PCI_VDEVICE(INTEL, 0x8c05), board_ahci }, /* Lynx M RAID */
{ PCI_VDEVICE(INTEL, 0x8c06), board_ahci }, /* Lynx Point RAID */
{ PCI_VDEVICE(INTEL, 0x8c07), board_ahci_low_power }, /* Lynx M RAID */
{ PCI_VDEVICE(INTEL, 0x8c07), board_ahci }, /* Lynx M RAID */
{ PCI_VDEVICE(INTEL, 0x8c0e), board_ahci }, /* Lynx Point RAID */
{ PCI_VDEVICE(INTEL, 0x8c0f), board_ahci_low_power }, /* Lynx M RAID */
{ PCI_VDEVICE(INTEL, 0x9c02), board_ahci_low_power }, /* Lynx LP AHCI */
{ PCI_VDEVICE(INTEL, 0x9c03), board_ahci_low_power }, /* Lynx LP AHCI */
{ PCI_VDEVICE(INTEL, 0x9c04), board_ahci_low_power }, /* Lynx LP RAID */
{ PCI_VDEVICE(INTEL, 0x9c05), board_ahci_low_power }, /* Lynx LP RAID */
{ PCI_VDEVICE(INTEL, 0x9c06), board_ahci_low_power }, /* Lynx LP RAID */
{ PCI_VDEVICE(INTEL, 0x9c07), board_ahci_low_power }, /* Lynx LP RAID */
{ PCI_VDEVICE(INTEL, 0x9c0e), board_ahci_low_power }, /* Lynx LP RAID */
{ PCI_VDEVICE(INTEL, 0x9c0f), board_ahci_low_power }, /* Lynx LP RAID */
{ PCI_VDEVICE(INTEL, 0x9dd3), board_ahci_low_power }, /* Cannon Lake PCH-LP AHCI */
{ PCI_VDEVICE(INTEL, 0x8c0f), board_ahci }, /* Lynx M RAID */
{ PCI_VDEVICE(INTEL, 0x9c02), board_ahci }, /* Lynx LP AHCI */
{ PCI_VDEVICE(INTEL, 0x9c03), board_ahci }, /* Lynx LP AHCI */
{ PCI_VDEVICE(INTEL, 0x9c04), board_ahci }, /* Lynx LP RAID */
{ PCI_VDEVICE(INTEL, 0x9c05), board_ahci }, /* Lynx LP RAID */
{ PCI_VDEVICE(INTEL, 0x9c06), board_ahci }, /* Lynx LP RAID */
{ PCI_VDEVICE(INTEL, 0x9c07), board_ahci }, /* Lynx LP RAID */
{ PCI_VDEVICE(INTEL, 0x9c0e), board_ahci }, /* Lynx LP RAID */
{ PCI_VDEVICE(INTEL, 0x9c0f), board_ahci }, /* Lynx LP RAID */
{ PCI_VDEVICE(INTEL, 0x9dd3), board_ahci }, /* Cannon Lake PCH-LP AHCI */
{ PCI_VDEVICE(INTEL, 0x1f22), board_ahci }, /* Avoton AHCI */
{ PCI_VDEVICE(INTEL, 0x1f23), board_ahci }, /* Avoton AHCI */
{ PCI_VDEVICE(INTEL, 0x1f24), board_ahci }, /* Avoton RAID */
Expand Down Expand Up @@ -390,26 +382,26 @@ static const struct pci_device_id ahci_pci_tbl[] = {
{ PCI_VDEVICE(INTEL, 0x8d66), board_ahci }, /* Wellsburg RAID */
{ PCI_VDEVICE(INTEL, 0x8d6e), board_ahci }, /* Wellsburg RAID */
{ PCI_VDEVICE(INTEL, 0x23a3), board_ahci }, /* Coleto Creek AHCI */
{ PCI_VDEVICE(INTEL, 0x9c83), board_ahci_low_power }, /* Wildcat LP AHCI */
{ PCI_VDEVICE(INTEL, 0x9c85), board_ahci_low_power }, /* Wildcat LP RAID */
{ PCI_VDEVICE(INTEL, 0x9c87), board_ahci_low_power }, /* Wildcat LP RAID */
{ PCI_VDEVICE(INTEL, 0x9c8f), board_ahci_low_power }, /* Wildcat LP RAID */
{ PCI_VDEVICE(INTEL, 0x9c83), board_ahci }, /* Wildcat LP AHCI */
{ PCI_VDEVICE(INTEL, 0x9c85), board_ahci }, /* Wildcat LP RAID */
{ PCI_VDEVICE(INTEL, 0x9c87), board_ahci }, /* Wildcat LP RAID */
{ PCI_VDEVICE(INTEL, 0x9c8f), board_ahci }, /* Wildcat LP RAID */
{ PCI_VDEVICE(INTEL, 0x8c82), board_ahci }, /* 9 Series AHCI */
{ PCI_VDEVICE(INTEL, 0x8c83), board_ahci_low_power }, /* 9 Series M AHCI */
{ PCI_VDEVICE(INTEL, 0x8c83), board_ahci }, /* 9 Series M AHCI */
{ PCI_VDEVICE(INTEL, 0x8c84), board_ahci }, /* 9 Series RAID */
{ PCI_VDEVICE(INTEL, 0x8c85), board_ahci_low_power }, /* 9 Series M RAID */
{ PCI_VDEVICE(INTEL, 0x8c85), board_ahci }, /* 9 Series M RAID */
{ PCI_VDEVICE(INTEL, 0x8c86), board_ahci }, /* 9 Series RAID */
{ PCI_VDEVICE(INTEL, 0x8c87), board_ahci_low_power }, /* 9 Series M RAID */
{ PCI_VDEVICE(INTEL, 0x8c87), board_ahci }, /* 9 Series M RAID */
{ PCI_VDEVICE(INTEL, 0x8c8e), board_ahci }, /* 9 Series RAID */
{ PCI_VDEVICE(INTEL, 0x8c8f), board_ahci_low_power }, /* 9 Series M RAID */
{ PCI_VDEVICE(INTEL, 0x9d03), board_ahci_low_power }, /* Sunrise LP AHCI */
{ PCI_VDEVICE(INTEL, 0x9d05), board_ahci_low_power }, /* Sunrise LP RAID */
{ PCI_VDEVICE(INTEL, 0x9d07), board_ahci_low_power }, /* Sunrise LP RAID */
{ PCI_VDEVICE(INTEL, 0x8c8f), board_ahci }, /* 9 Series M RAID */
{ PCI_VDEVICE(INTEL, 0x9d03), board_ahci }, /* Sunrise LP AHCI */
{ PCI_VDEVICE(INTEL, 0x9d05), board_ahci }, /* Sunrise LP RAID */
{ PCI_VDEVICE(INTEL, 0x9d07), board_ahci }, /* Sunrise LP RAID */
{ PCI_VDEVICE(INTEL, 0xa102), board_ahci }, /* Sunrise Point-H AHCI */
{ PCI_VDEVICE(INTEL, 0xa103), board_ahci_low_power }, /* Sunrise M AHCI */
{ PCI_VDEVICE(INTEL, 0xa103), board_ahci }, /* Sunrise M AHCI */
{ PCI_VDEVICE(INTEL, 0xa105), board_ahci }, /* Sunrise Point-H RAID */
{ PCI_VDEVICE(INTEL, 0xa106), board_ahci }, /* Sunrise Point-H RAID */
{ PCI_VDEVICE(INTEL, 0xa107), board_ahci_low_power }, /* Sunrise M RAID */
{ PCI_VDEVICE(INTEL, 0xa107), board_ahci }, /* Sunrise M RAID */
{ PCI_VDEVICE(INTEL, 0xa10f), board_ahci }, /* Sunrise Point-H RAID */
{ PCI_VDEVICE(INTEL, 0xa182), board_ahci }, /* Lewisburg AHCI*/
{ PCI_VDEVICE(INTEL, 0xa186), board_ahci }, /* Lewisburg RAID*/
Expand All @@ -422,16 +414,16 @@ static const struct pci_device_id ahci_pci_tbl[] = {
{ PCI_VDEVICE(INTEL, 0xa356), board_ahci }, /* Cannon Lake PCH-H RAID */
{ PCI_VDEVICE(INTEL, 0x06d7), board_ahci }, /* Comet Lake-H RAID */
{ PCI_VDEVICE(INTEL, 0xa386), board_ahci }, /* Comet Lake PCH-V RAID */
{ PCI_VDEVICE(INTEL, 0x0f22), board_ahci_low_power }, /* Bay Trail AHCI */
{ PCI_VDEVICE(INTEL, 0x0f23), board_ahci_low_power }, /* Bay Trail AHCI */
{ PCI_VDEVICE(INTEL, 0x22a3), board_ahci_low_power }, /* Cherry Tr. AHCI */
{ PCI_VDEVICE(INTEL, 0x5ae3), board_ahci_low_power }, /* ApolloLake AHCI */
{ PCI_VDEVICE(INTEL, 0x34d3), board_ahci_low_power }, /* Ice Lake LP AHCI */
{ PCI_VDEVICE(INTEL, 0x02d3), board_ahci_low_power }, /* Comet Lake PCH-U AHCI */
{ PCI_VDEVICE(INTEL, 0x02d7), board_ahci_low_power }, /* Comet Lake PCH RAID */
{ PCI_VDEVICE(INTEL, 0x0f22), board_ahci }, /* Bay Trail AHCI */
{ PCI_VDEVICE(INTEL, 0x0f23), board_ahci }, /* Bay Trail AHCI */
{ PCI_VDEVICE(INTEL, 0x22a3), board_ahci }, /* Cherry Tr. AHCI */
{ PCI_VDEVICE(INTEL, 0x5ae3), board_ahci }, /* ApolloLake AHCI */
{ PCI_VDEVICE(INTEL, 0x34d3), board_ahci }, /* Ice Lake LP AHCI */
{ PCI_VDEVICE(INTEL, 0x02d3), board_ahci }, /* Comet Lake PCH-U AHCI */
{ PCI_VDEVICE(INTEL, 0x02d7), board_ahci }, /* Comet Lake PCH RAID */
/* 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 */
{ PCI_VDEVICE(INTEL, 0x7ae2), board_ahci_low_power }, /* Alder Lake-P AHCI */
{ PCI_VDEVICE(INTEL, 0x4b63), board_ahci }, /* Elkhart Lake AHCI */
{ PCI_VDEVICE(INTEL, 0x7ae2), board_ahci }, /* Alder Lake-P AHCI */

/* 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,
Expand Down Expand Up @@ -459,7 +451,7 @@ static const struct pci_device_id ahci_pci_tbl[] = {
{ PCI_VDEVICE(AMD, 0x7800), board_ahci }, /* AMD Hudson-2 */
{ PCI_VDEVICE(AMD, 0x7801), board_ahci_no_debounce_delay }, /* AMD Hudson-2 (AHCI mode) */
{ PCI_VDEVICE(AMD, 0x7900), board_ahci }, /* AMD CZ */
{ PCI_VDEVICE(AMD, 0x7901), board_ahci_low_power }, /* AMD Green Sardine */
{ PCI_VDEVICE(AMD, 0x7901), board_ahci }, /* AMD Green Sardine */
/* AMD is using RAID class only for ahci controllers */
{ PCI_VENDOR_ID_AMD, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
PCI_CLASS_STORAGE_RAID << 8, 0xffffff, board_ahci },
Expand Down Expand Up @@ -1660,11 +1652,6 @@ static void ahci_update_initial_lpm_policy(struct ata_port *ap)
struct ahci_host_priv *hpriv = ap->host->private_data;
int policy = CONFIG_SATA_MOBILE_LPM_POLICY;


/* Ignore processing for chipsets that don't use policy */
if (!(hpriv->flags & AHCI_HFLAG_USE_LPM_POLICY))
return;

/*
* AHCI contains a known incompatibility between LPM and hot-plug
* removal events, see 7.3.1 Hot Plug Removal Detection and Power
Expand Down
9 changes: 3 additions & 6 deletions drivers/ata/ahci.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -241,13 +241,10 @@ enum {
AHCI_HFLAG_YES_ALPM = BIT(23), /* force ALPM cap on */
AHCI_HFLAG_NO_WRITE_TO_RO = BIT(24), /* don't write to read
only registers */
AHCI_HFLAG_USE_LPM_POLICY = BIT(25), /* chipset that should use
SATA_MOBILE_LPM_POLICY
as default lpm_policy */
AHCI_HFLAG_SUSPEND_PHYS = BIT(26), /* handle PHYs during
AHCI_HFLAG_SUSPEND_PHYS = BIT(25), /* handle PHYs during
suspend/resume */
AHCI_HFLAG_NO_SXS = BIT(28), /* SXS not supported */
AHCI_HFLAG_43BIT_ONLY = BIT(29), /* 43bit DMA addr limit */
AHCI_HFLAG_NO_SXS = BIT(26), /* SXS not supported */
AHCI_HFLAG_43BIT_ONLY = BIT(27), /* 43bit DMA addr limit */

/* ap->flags bits */

Expand Down

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