1 files changed, 56 insertions, 2 deletions

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 45f63b09828a..944e44caa260 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -63,6 +63,7 @@ enum board_ids {
 	board_ahci_pcs_quirk_no_devslp,
 	board_ahci_pcs_quirk_no_sntf,
 	board_ahci_yes_fbs,
+	board_ahci_yes_fbs_atapi_dma,
 
 	/* board IDs for specific chipsets in alphabetical order */
 	board_ahci_al,
@@ -188,6 +189,14 @@ static const struct ata_port_info ahci_port_info[] = {
 		.udma_mask	= ATA_UDMA6,
 		.port_ops	= &ahci_ops,
 	},
+	[board_ahci_yes_fbs_atapi_dma] = {
+		AHCI_HFLAGS	(AHCI_HFLAG_YES_FBS |
+				 AHCI_HFLAG_ATAPI_DMA_QUIRK),
+		.flags		= AHCI_FLAG_COMMON,
+		.pio_mask	= ATA_PIO4,
+		.udma_mask	= ATA_UDMA6,
+		.port_ops	= &ahci_ops,
+	},
 	/* by chipsets */
 	[board_ahci_al] = {
 		AHCI_HFLAGS	(AHCI_HFLAG_NO_PMP | AHCI_HFLAG_NO_MSI),
@@ -589,6 +598,8 @@ static const struct pci_device_id ahci_pci_tbl[] = {
 	  .driver_data = board_ahci_yes_fbs },
 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x91a3),
 	  .driver_data = board_ahci_yes_fbs },
+	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9215),
+	  .driver_data = board_ahci_yes_fbs_atapi_dma },
 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9230),
 	  .driver_data = board_ahci_yes_fbs },
 	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL_EXT, 0x9235),
@@ -1399,8 +1410,15 @@ static bool ahci_broken_suspend(struct pci_dev *pdev)
 
 static bool ahci_broken_lpm(struct pci_dev *pdev)
 {
+	/*
+	 * Platforms with LPM problems.
+	 * If driver_data is NULL, there is no existing BIOS version with
+	 * functioning LPM.
+	 * If driver_data is non-NULL, then driver_data contains the DMI BIOS
+	 * build date of the first BIOS version with functioning LPM (i.e. older
+	 * BIOS versions have broken LPM).
+	 */
 	static const struct dmi_system_id sysids[] = {
-		/* Various Lenovo 50 series have LPM issues with older BIOSen */
 		{
 			.matches = {
 				DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
@@ -1435,6 +1453,29 @@ static bool ahci_broken_lpm(struct pci_dev *pdev)
 			 */
 			.driver_data = "20180310", /* 2.35 */
 		},
+		{
+			.matches = {
+				DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+				DMI_MATCH(DMI_PRODUCT_NAME, "ASUSPRO D840MB_M840SA"),
+			},
+			/* 320 is broken, there is no known good version. */
+		},
+		{
+			/*
+			 * AMD 500 Series Chipset SATA Controller [1022:43eb]
+			 * on this motherboard timeouts on ports 5 and 6 when
+			 * LPM is enabled, at least with WDC WD20EFAX-68FB5N0
+			 * hard drives. LPM with the same drive works fine on
+			 * all other ports on the same controller.
+			 */
+			.matches = {
+				DMI_MATCH(DMI_BOARD_VENDOR,
+					  "ASUSTeK COMPUTER INC."),
+				DMI_MATCH(DMI_BOARD_NAME,
+					  "ROG STRIX B550-F GAMING (WI-FI)"),
+			},
+			/* 3621 is broken, there is no known good version. */
+		},
 		{ }	/* terminate list */
 	};
 	const struct dmi_system_id *dmi = dmi_first_match(sysids);
@@ -1444,6 +1485,9 @@ static bool ahci_broken_lpm(struct pci_dev *pdev)
 	if (!dmi)
 		return false;
 
+	if (!dmi->driver_data)
+		return true;
+
 	dmi_get_date(DMI_BIOS_DATE, &year, &month, &date);
 	snprintf(buf, sizeof(buf), "%04d%02d%02d", year, month, date);
 
@@ -1737,11 +1781,21 @@ static void ahci_update_initial_lpm_policy(struct ata_port *ap)
 		return;
 	}
 
+	/* If no Partial or no Slumber, we cannot support DIPM. */
+	if ((ap->host->flags & ATA_HOST_NO_PART) ||
+	    (ap->host->flags & ATA_HOST_NO_SSC)) {
+		ata_port_dbg(ap, "Host does not support DIPM\n");
+		ap->flags |= ATA_FLAG_NO_DIPM;
+	}
+
 	/* If no LPM states are supported by the HBA, do not bother with LPM */
 	if ((ap->host->flags & ATA_HOST_NO_PART) &&
 	    (ap->host->flags & ATA_HOST_NO_SSC) &&
 	    (ap->host->flags & ATA_HOST_NO_DEVSLP)) {
-		ata_port_dbg(ap, "no LPM states supported, not enabling LPM\n");
+		ata_port_dbg(ap,
+			"No LPM states supported, forcing LPM max_power\n");
+		ap->flags |= ATA_FLAG_NO_LPM;
+		ap->target_lpm_policy = ATA_LPM_MAX_POWER;
 		return;
 	}