[PATCH] ahci: Add support for Cavium's fifth generation SATA controller

From: Radha Mohan Chintakuntla
Date: Wed Oct 11 2017 - 01:38:07 EST


From: Radha Mohan Chintakuntla <rchintakuntla@xxxxxxxxxx>

This patch adds support for Cavium's fifth generation SATA controller.
It is an on-chip controller and complies with AHCI 1.3.1. As the
controller uses 64-bit addresses it cannot use the standard AHCI BAR5
and so uses BAR4.

Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@xxxxxxxxxx>
---
drivers/ata/ahci.c | 9 +++++++--
1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 9f78bb0..5443cb7 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -57,6 +57,7 @@ enum {
AHCI_PCI_BAR_STA2X11 = 0,
AHCI_PCI_BAR_CAVIUM = 0,
AHCI_PCI_BAR_ENMOTUS = 2,
+ AHCI_PCI_BAR_CAVIUM_GEN5 = 4,
AHCI_PCI_BAR_STANDARD = 5,
};

@@ -1570,8 +1571,12 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
ahci_pci_bar = AHCI_PCI_BAR_STA2X11;
else if (pdev->vendor == 0x1c44 && pdev->device == 0x8000)
ahci_pci_bar = AHCI_PCI_BAR_ENMOTUS;
- else if (pdev->vendor == 0x177d && pdev->device == 0xa01c)
- ahci_pci_bar = AHCI_PCI_BAR_CAVIUM;
+ else if (pdev->vendor == PCI_VENDOR_ID_CAVIUM) {
+ if (pdev->device == 0xa01c)
+ ahci_pci_bar = AHCI_PCI_BAR_CAVIUM;
+ if (pdev->device == 0xa084)
+ ahci_pci_bar = AHCI_PCI_BAR_CAVIUM_GEN5;
+ }

/* acquire resources */
rc = pcim_enable_device(pdev);
--
1.7.1