diff mbox series

[1/3] ata: ahci: Drop low power policy board type

Message ID 20220524170508.563-2-mario.limonciello@amd.com
State New
Headers show
Series Drop mobile board support | expand

Commit Message

Mario Limonciello May 24, 2022, 5:05 p.m. UTC 
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.

Suggested-by: Christoph Hellwig <hch@infradead.org>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
---
 drivers/ata/Kconfig |   5 +--
 drivers/ata/ahci.c  | 105 +++++++++++++++++++-------------------------
 drivers/ata/ahci.h  |   7 +--
 3 files changed, 50 insertions(+), 67 deletions(-)
diff mbox series

Patch

diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index bb45a9c00514..8ad73a30f405 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -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
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index c1eca72b4575..c39cdf6a44f1 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -50,7 +50,6 @@  enum board_ids {
 	/* board IDs by feature in alphabetical order */
 	board_ahci,
 	board_ahci_ign_iferr,
-	board_ahci_low_power,
 	board_ahci_no_debounce_delay,
 	board_ahci_nomsi,
 	board_ahci_noncq,
@@ -135,13 +134,6 @@  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,
@@ -275,13 +267,13 @@  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 */
@@ -291,9 +283,9 @@  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 */
@@ -316,9 +308,9 @@  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 */
@@ -326,29 +318,29 @@  static const struct pci_device_id ahci_pci_tbl[] = {
 	{ 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 */
@@ -382,26 +374,26 @@  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*/
@@ -414,13 +406,13 @@  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 */
 
 	/* 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,
@@ -448,7 +440,7 @@  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 },
@@ -1598,11 +1590,6 @@  static void ahci_update_initial_lpm_policy(struct ata_port *ap,
 {
 	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;
-
 	/* user modified policy via module param */
 	if (mobile_lpm_policy != -1) {
 		policy = mobile_lpm_policy;
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index ad11a4c52fbe..a085228ce4ff 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -235,12 +235,9 @@  enum {
 	AHCI_HFLAG_YES_ALPM		= (1 << 23), /* force ALPM cap on */
 	AHCI_HFLAG_NO_WRITE_TO_RO	= (1 << 24), /* don't write to read
 							only registers */
-	AHCI_HFLAG_USE_LPM_POLICY	= (1 << 25), /* chipset that should use
-							SATA_MOBILE_LPM_POLICY
-							as default lpm_policy */
-	AHCI_HFLAG_SUSPEND_PHYS		= (1 << 26), /* handle PHYs during
+	AHCI_HFLAG_SUSPEND_PHYS		= (1 << 25), /* handle PHYs during
 							suspend/resume */
-	AHCI_HFLAG_NO_SXS		= (1 << 28), /* SXS not supported */
+	AHCI_HFLAG_NO_SXS		= (1 << 26), /* SXS not supported */
 
 	/* ap->flags bits */