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authorLinus Torvalds <torvalds@linux-foundation.org>2016-05-07 08:13:42 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-07 08:13:42 -0700
commit35cd3f4563c4a0fc99be300afc7b82a822e634c7 (patch)
treee27c2fa0588110d0280c0b327ea4548475096394 /drivers
parentb4184cbff393d9ede2d80efd7088126706c1ce08 (diff)
parent535dac4ab5f42e040e8405b31e309a6b6d4eee57 (diff)
Merge branch 'for-4.6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Pull libata fixes from Tejun Heo: "An ahci driver addition and updates to ahci port enable handling for some platform devices" * 'for-4.6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: ata: add AMD Seattle platform driver ARM: dts: apq8064: add ahci ports-implemented mask ata: ahci-platform: Add ports-implemented DT bindings. libahci: save port map for forced port map
Diffstat (limited to 'drivers')
-rw-r--r--drivers/ata/Kconfig8
-rw-r--r--drivers/ata/Makefile1
-rw-r--r--drivers/ata/ahci_platform.c3
-rw-r--r--drivers/ata/ahci_seattle.c210
-rw-r--r--drivers/ata/libahci.c1
5 files changed, 223 insertions, 0 deletions
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index 5083f85efea7..cfa936a32513 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -202,6 +202,14 @@ config SATA_FSL
If unsure, say N.
+config SATA_AHCI_SEATTLE
+ tristate "AMD Seattle 6.0Gbps AHCI SATA host controller support"
+ depends on ARCH_SEATTLE
+ help
+ This option enables support for AMD Seattle SATA host controller.
+
+ If unsure, say N
+
config SATA_INIC162X
tristate "Initio 162x SATA support (Very Experimental)"
depends on PCI
diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile
index 18579521464e..0b2afb7e5f35 100644
--- a/drivers/ata/Makefile
+++ b/drivers/ata/Makefile
@@ -4,6 +4,7 @@ obj-$(CONFIG_ATA) += libata.o
# non-SFF interface
obj-$(CONFIG_SATA_AHCI) += ahci.o libahci.o
obj-$(CONFIG_SATA_ACARD_AHCI) += acard-ahci.o libahci.o
+obj-$(CONFIG_SATA_AHCI_SEATTLE) += ahci_seattle.o libahci.o libahci_platform.o
obj-$(CONFIG_SATA_AHCI_PLATFORM) += ahci_platform.o libahci.o libahci_platform.o
obj-$(CONFIG_SATA_FSL) += sata_fsl.o
obj-$(CONFIG_SATA_INIC162X) += sata_inic162x.o
diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
index 40442332bfa7..62a04c8fb5c9 100644
--- a/drivers/ata/ahci_platform.c
+++ b/drivers/ata/ahci_platform.c
@@ -51,6 +51,9 @@ static int ahci_probe(struct platform_device *pdev)
if (rc)
return rc;
+ of_property_read_u32(dev->of_node,
+ "ports-implemented", &hpriv->force_port_map);
+
if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci"))
hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ;
diff --git a/drivers/ata/ahci_seattle.c b/drivers/ata/ahci_seattle.c
new file mode 100644
index 000000000000..6e702ab57220
--- /dev/null
+++ b/drivers/ata/ahci_seattle.c
@@ -0,0 +1,210 @@
+/*
+ * AMD Seattle AHCI SATA driver
+ *
+ * Copyright (c) 2015, Advanced Micro Devices
+ * Author: Brijesh Singh <brijesh.singh@amd.com>
+ *
+ * based on the AHCI SATA platform driver by Jeff Garzik and Anton Vorontsov
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/device.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/libata.h>
+#include <linux/ahci_platform.h>
+#include <linux/acpi.h>
+#include <linux/pci_ids.h>
+#include "ahci.h"
+
+/* SGPIO Control Register definition
+ *
+ * Bit Type Description
+ * 31 RW OD7.2 (activity)
+ * 30 RW OD7.1 (locate)
+ * 29 RW OD7.0 (fault)
+ * 28...8 RW OD6.2...OD0.0 (3bits per port, 1 bit per LED)
+ * 7 RO SGPIO feature flag
+ * 6:4 RO Reserved
+ * 3:0 RO Number of ports (0 means no port supported)
+ */
+#define ACTIVITY_BIT_POS(x) (8 + (3 * x))
+#define LOCATE_BIT_POS(x) (ACTIVITY_BIT_POS(x) + 1)
+#define FAULT_BIT_POS(x) (LOCATE_BIT_POS(x) + 1)
+
+#define ACTIVITY_MASK 0x00010000
+#define LOCATE_MASK 0x00080000
+#define FAULT_MASK 0x00400000
+
+#define DRV_NAME "ahci-seattle"
+
+static ssize_t seattle_transmit_led_message(struct ata_port *ap, u32 state,
+ ssize_t size);
+
+struct seattle_plat_data {
+ void __iomem *sgpio_ctrl;
+};
+
+static struct ata_port_operations ahci_port_ops = {
+ .inherits = &ahci_ops,
+};
+
+static const struct ata_port_info ahci_port_info = {
+ .flags = AHCI_FLAG_COMMON,
+ .pio_mask = ATA_PIO4,
+ .udma_mask = ATA_UDMA6,
+ .port_ops = &ahci_port_ops,
+};
+
+static struct ata_port_operations ahci_seattle_ops = {
+ .inherits = &ahci_ops,
+ .transmit_led_message = seattle_transmit_led_message,
+};
+
+static const struct ata_port_info ahci_port_seattle_info = {
+ .flags = AHCI_FLAG_COMMON | ATA_FLAG_EM | ATA_FLAG_SW_ACTIVITY,
+ .link_flags = ATA_LFLAG_SW_ACTIVITY,
+ .pio_mask = ATA_PIO4,
+ .udma_mask = ATA_UDMA6,
+ .port_ops = &ahci_seattle_ops,
+};
+
+static struct scsi_host_template ahci_platform_sht = {
+ AHCI_SHT(DRV_NAME),
+};
+
+static ssize_t seattle_transmit_led_message(struct ata_port *ap, u32 state,
+ ssize_t size)
+{
+ struct ahci_host_priv *hpriv = ap->host->private_data;
+ struct ahci_port_priv *pp = ap->private_data;
+ struct seattle_plat_data *plat_data = hpriv->plat_data;
+ unsigned long flags;
+ int pmp;
+ struct ahci_em_priv *emp;
+ u32 val;
+
+ /* get the slot number from the message */
+ pmp = (state & EM_MSG_LED_PMP_SLOT) >> 8;
+ if (pmp >= EM_MAX_SLOTS)
+ return -EINVAL;
+ emp = &pp->em_priv[pmp];
+
+ val = ioread32(plat_data->sgpio_ctrl);
+ if (state & ACTIVITY_MASK)
+ val |= 1 << ACTIVITY_BIT_POS((ap->port_no));
+ else
+ val &= ~(1 << ACTIVITY_BIT_POS((ap->port_no)));
+
+ if (state & LOCATE_MASK)
+ val |= 1 << LOCATE_BIT_POS((ap->port_no));
+ else
+ val &= ~(1 << LOCATE_BIT_POS((ap->port_no)));
+
+ if (state & FAULT_MASK)
+ val |= 1 << FAULT_BIT_POS((ap->port_no));
+ else
+ val &= ~(1 << FAULT_BIT_POS((ap->port_no)));
+
+ iowrite32(val, plat_data->sgpio_ctrl);
+
+ spin_lock_irqsave(ap->lock, flags);
+
+ /* save off new led state for port/slot */
+ emp->led_state = state;
+
+ spin_unlock_irqrestore(ap->lock, flags);
+
+ return size;
+}
+
+static const struct ata_port_info *ahci_seattle_get_port_info(
+ struct platform_device *pdev, struct ahci_host_priv *hpriv)
+{
+ struct device *dev = &pdev->dev;
+ struct seattle_plat_data *plat_data;
+ u32 val;
+
+ plat_data = devm_kzalloc(dev, sizeof(*plat_data), GFP_KERNEL);
+ if (IS_ERR(plat_data))
+ return &ahci_port_info;
+
+ plat_data->sgpio_ctrl = devm_ioremap_resource(dev,
+ platform_get_resource(pdev, IORESOURCE_MEM, 1));
+ if (IS_ERR(plat_data->sgpio_ctrl))
+ return &ahci_port_info;
+
+ val = ioread32(plat_data->sgpio_ctrl);
+
+ if (!(val & 0xf))
+ return &ahci_port_info;
+
+ hpriv->em_loc = 0;
+ hpriv->em_buf_sz = 4;
+ hpriv->em_msg_type = EM_MSG_TYPE_LED;
+ hpriv->plat_data = plat_data;
+
+ dev_info(dev, "SGPIO LED control is enabled.\n");
+ return &ahci_port_seattle_info;
+}
+
+static int ahci_seattle_probe(struct platform_device *pdev)
+{
+ int rc;
+ struct ahci_host_priv *hpriv;
+
+ hpriv = ahci_platform_get_resources(pdev);
+ if (IS_ERR(hpriv))
+ return PTR_ERR(hpriv);
+
+ rc = ahci_platform_enable_resources(hpriv);
+ if (rc)
+ return rc;
+
+ rc = ahci_platform_init_host(pdev, hpriv,
+ ahci_seattle_get_port_info(pdev, hpriv),
+ &ahci_platform_sht);
+ if (rc)
+ goto disable_resources;
+
+ return 0;
+disable_resources:
+ ahci_platform_disable_resources(hpriv);
+ return rc;
+}
+
+static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,
+ ahci_platform_resume);
+
+static const struct acpi_device_id ahci_acpi_match[] = {
+ { "AMDI0600", 0 },
+ {}
+};
+MODULE_DEVICE_TABLE(acpi, ahci_acpi_match);
+
+static struct platform_driver ahci_seattle_driver = {
+ .probe = ahci_seattle_probe,
+ .remove = ata_platform_remove_one,
+ .driver = {
+ .name = DRV_NAME,
+ .acpi_match_table = ahci_acpi_match,
+ .pm = &ahci_pm_ops,
+ },
+};
+module_platform_driver(ahci_seattle_driver);
+
+MODULE_DESCRIPTION("Seattle AHCI SATA platform driver");
+MODULE_AUTHOR("Brijesh Singh <brijesh.singh@amd.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index 3982054060b8..a5d7c1c2a05e 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -507,6 +507,7 @@ void ahci_save_initial_config(struct device *dev, struct ahci_host_priv *hpriv)
dev_info(dev, "forcing port_map 0x%x -> 0x%x\n",
port_map, hpriv->force_port_map);
port_map = hpriv->force_port_map;
+ hpriv->saved_port_map = port_map;
}
if (hpriv->mask_port_map) {