Adding upstream version 5.10.209.upstream/5.10.209

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 174 insertions, 0 deletions

diff --git a/drivers/ata/pata_jmicron.c b/drivers/ata/pata_jmicron.c
new file mode 100644
index 000000000..c3dedd3e7
--- /dev/null
+++ b/drivers/ata/pata_jmicron.c
@@ -0,0 +1,174 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *    pata_jmicron.c - JMicron ATA driver for non AHCI mode. This drives the
+ *			PATA port of the controller. The SATA ports are
+ *			driven by AHCI in the usual configuration although
+ *			this driver can handle other setups if we need it.
+ *
+ *	(c) 2006 Red Hat
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/blkdev.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <scsi/scsi_host.h>
+#include <linux/libata.h>
+#include <linux/ata.h>
+
+#define DRV_NAME	"pata_jmicron"
+#define DRV_VERSION	"0.1.5"
+
+typedef enum {
+	PORT_PATA0 = 0,
+	PORT_PATA1 = 1,
+	PORT_SATA = 2,
+} port_type;
+
+/**
+ *	jmicron_pre_reset	-	check for 40/80 pin
+ *	@link: ATA link
+ *	@deadline: deadline jiffies for the operation
+ *
+ *	Perform the PATA port setup we need.
+ *
+ *	On the Jmicron 361/363 there is a single PATA port that can be mapped
+ *	either as primary or secondary (or neither). We don't do any policy
+ *	and setup here. We assume that has been done by init_one and the
+ *	BIOS.
+ */
+static int jmicron_pre_reset(struct ata_link *link, unsigned long deadline)
+{
+	struct ata_port *ap = link->ap;
+	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+	u32 control;
+	u32 control5;
+	int port_mask = 1<< (4 * ap->port_no);
+	int port = ap->port_no;
+	port_type port_map[2];
+
+	/* Check if our port is enabled */
+	pci_read_config_dword(pdev, 0x40, &control);
+	if ((control & port_mask) == 0)
+		return -ENOENT;
+
+	/* There are two basic mappings. One has the two SATA ports merged
+	   as master/slave and the secondary as PATA, the other has only the
+	   SATA port mapped */
+	if (control & (1 << 23)) {
+		port_map[0] = PORT_SATA;
+		port_map[1] = PORT_PATA0;
+	} else {
+		port_map[0] = PORT_SATA;
+		port_map[1] = PORT_SATA;
+	}
+
+	/* The 365/366 may have this bit set to map the second PATA port
+	   as the internal primary channel */
+	pci_read_config_dword(pdev, 0x80, &control5);
+	if (control5 & (1<<24))
+		port_map[0] = PORT_PATA1;
+
+	/* The two ports may then be logically swapped by the firmware */
+	if (control & (1 << 22))
+		port = port ^ 1;
+
+	/*
+	 *	Now we know which physical port we are talking about we can
+	 *	actually do our cable checking etc. Thankfully we don't need
+	 *	to do the plumbing for other cases.
+	 */
+	switch (port_map[port]) {
+	case PORT_PATA0:
+		if ((control & (1 << 5)) == 0)
+			return -ENOENT;
+		if (control & (1 << 3))	/* 40/80 pin primary */
+			ap->cbl = ATA_CBL_PATA40;
+		else
+			ap->cbl = ATA_CBL_PATA80;
+		break;
+	case PORT_PATA1:
+		/* Bit 21 is set if the port is enabled */
+		if ((control5 & (1 << 21)) == 0)
+			return -ENOENT;
+		if (control5 & (1 << 19))	/* 40/80 pin secondary */
+			ap->cbl = ATA_CBL_PATA40;
+		else
+			ap->cbl = ATA_CBL_PATA80;
+		break;
+	case PORT_SATA:
+		ap->cbl = ATA_CBL_SATA;
+		break;
+	}
+	return ata_sff_prereset(link, deadline);
+}
+
+/* No PIO or DMA methods needed for this device */
+
+static struct scsi_host_template jmicron_sht = {
+	ATA_BMDMA_SHT(DRV_NAME),
+};
+
+static struct ata_port_operations jmicron_ops = {
+	.inherits		= &ata_bmdma_port_ops,
+	.prereset		= jmicron_pre_reset,
+};
+
+
+/**
+ *	jmicron_init_one - Register Jmicron ATA PCI device with kernel services
+ *	@pdev: PCI device to register
+ *	@ent: Entry in jmicron_pci_tbl matching with @pdev
+ *
+ *	Called from kernel PCI layer.
+ *
+ *	LOCKING:
+ *	Inherited from PCI layer (may sleep).
+ *
+ *	RETURNS:
+ *	Zero on success, or -ERRNO value.
+ */
+
+static int jmicron_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	static const struct ata_port_info info = {
+		.flags	= ATA_FLAG_SLAVE_POSS,
+
+		.pio_mask	= ATA_PIO4,
+		.mwdma_mask	= ATA_MWDMA2,
+		.udma_mask 	= ATA_UDMA5,
+
+		.port_ops	= &jmicron_ops,
+	};
+	const struct ata_port_info *ppi[] = { &info, NULL };
+
+	return ata_pci_bmdma_init_one(pdev, ppi, &jmicron_sht, NULL, 0);
+}
+
+static const struct pci_device_id jmicron_pci_tbl[] = {
+	{ PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
+	  PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 0 },
+	{ }	/* terminate list */
+};
+
+static struct pci_driver jmicron_pci_driver = {
+	.name			= DRV_NAME,
+	.id_table		= jmicron_pci_tbl,
+	.probe			= jmicron_init_one,
+	.remove			= ata_pci_remove_one,
+#ifdef CONFIG_PM_SLEEP
+	.suspend		= ata_pci_device_suspend,
+	.resume			= ata_pci_device_resume,
+#endif
+};
+
+module_pci_driver(jmicron_pci_driver);
+
+MODULE_AUTHOR("Alan Cox");
+MODULE_DESCRIPTION("SCSI low-level driver for Jmicron PATA ports");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl);
+MODULE_VERSION(DRV_VERSION);
+