v4.19.13 snapshot.
diff --git a/drivers/ata/pata_cypress.c b/drivers/ata/pata_cypress.c
new file mode 100644
index 0000000..7930184
--- /dev/null
+++ b/drivers/ata/pata_cypress.c
@@ -0,0 +1,166 @@
+/*
+ * pata_cypress.c - Cypress PATA for new ATA layer
+ * (C) 2006 Red Hat Inc
+ * Alan Cox
+ *
+ * Based heavily on
+ * linux/drivers/ide/pci/cy82c693.c Version 0.40 Sep. 10, 2002
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/blkdev.h>
+#include <linux/delay.h>
+#include <scsi/scsi_host.h>
+#include <linux/libata.h>
+
+#define DRV_NAME "pata_cypress"
+#define DRV_VERSION "0.1.5"
+
+/* here are the offset definitions for the registers */
+
+enum {
+ CY82_IDE_CMDREG = 0x04,
+ CY82_IDE_ADDRSETUP = 0x48,
+ CY82_IDE_MASTER_IOR = 0x4C,
+ CY82_IDE_MASTER_IOW = 0x4D,
+ CY82_IDE_SLAVE_IOR = 0x4E,
+ CY82_IDE_SLAVE_IOW = 0x4F,
+ CY82_IDE_MASTER_8BIT = 0x50,
+ CY82_IDE_SLAVE_8BIT = 0x51,
+
+ CY82_INDEX_PORT = 0x22,
+ CY82_DATA_PORT = 0x23,
+
+ CY82_INDEX_CTRLREG1 = 0x01,
+ CY82_INDEX_CHANNEL0 = 0x30,
+ CY82_INDEX_CHANNEL1 = 0x31,
+ CY82_INDEX_TIMEOUT = 0x32
+};
+
+/**
+ * cy82c693_set_piomode - set initial PIO mode data
+ * @ap: ATA interface
+ * @adev: ATA device
+ *
+ * Called to do the PIO mode setup.
+ */
+
+static void cy82c693_set_piomode(struct ata_port *ap, struct ata_device *adev)
+{
+ struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+ struct ata_timing t;
+ const unsigned long T = 1000000 / 33;
+ short time_16, time_8;
+ u32 addr;
+
+ if (ata_timing_compute(adev, adev->pio_mode, &t, T, 1) < 0) {
+ printk(KERN_ERR DRV_NAME ": mome computation failed.\n");
+ return;
+ }
+
+ time_16 = clamp_val(t.recover - 1, 0, 15) |
+ (clamp_val(t.active - 1, 0, 15) << 4);
+ time_8 = clamp_val(t.act8b - 1, 0, 15) |
+ (clamp_val(t.rec8b - 1, 0, 15) << 4);
+
+ if (adev->devno == 0) {
+ pci_read_config_dword(pdev, CY82_IDE_ADDRSETUP, &addr);
+
+ addr &= ~0x0F; /* Mask bits */
+ addr |= clamp_val(t.setup - 1, 0, 15);
+
+ pci_write_config_dword(pdev, CY82_IDE_ADDRSETUP, addr);
+ pci_write_config_byte(pdev, CY82_IDE_MASTER_IOR, time_16);
+ pci_write_config_byte(pdev, CY82_IDE_MASTER_IOW, time_16);
+ pci_write_config_byte(pdev, CY82_IDE_MASTER_8BIT, time_8);
+ } else {
+ pci_read_config_dword(pdev, CY82_IDE_ADDRSETUP, &addr);
+
+ addr &= ~0xF0; /* Mask bits */
+ addr |= (clamp_val(t.setup - 1, 0, 15) << 4);
+
+ pci_write_config_dword(pdev, CY82_IDE_ADDRSETUP, addr);
+ pci_write_config_byte(pdev, CY82_IDE_SLAVE_IOR, time_16);
+ pci_write_config_byte(pdev, CY82_IDE_SLAVE_IOW, time_16);
+ pci_write_config_byte(pdev, CY82_IDE_SLAVE_8BIT, time_8);
+ }
+}
+
+/**
+ * cy82c693_set_dmamode - set initial DMA mode data
+ * @ap: ATA interface
+ * @adev: ATA device
+ *
+ * Called to do the DMA mode setup.
+ */
+
+static void cy82c693_set_dmamode(struct ata_port *ap, struct ata_device *adev)
+{
+ int reg = CY82_INDEX_CHANNEL0 + ap->port_no;
+
+ /* Be afraid, be very afraid. Magic registers in low I/O space */
+ outb(reg, 0x22);
+ outb(adev->dma_mode - XFER_MW_DMA_0, 0x23);
+
+ /* 0x50 gives the best behaviour on the Alpha's using this chip */
+ outb(CY82_INDEX_TIMEOUT, 0x22);
+ outb(0x50, 0x23);
+}
+
+static struct scsi_host_template cy82c693_sht = {
+ ATA_BMDMA_SHT(DRV_NAME),
+};
+
+static struct ata_port_operations cy82c693_port_ops = {
+ .inherits = &ata_bmdma_port_ops,
+ .cable_detect = ata_cable_40wire,
+ .set_piomode = cy82c693_set_piomode,
+ .set_dmamode = cy82c693_set_dmamode,
+};
+
+static int cy82c693_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,
+ .port_ops = &cy82c693_port_ops
+ };
+ const struct ata_port_info *ppi[] = { &info, &ata_dummy_port_info };
+
+ /* Devfn 1 is the ATA primary. The secondary is magic and on devfn2.
+ For the moment we don't handle the secondary. FIXME */
+
+ if (PCI_FUNC(pdev->devfn) != 1)
+ return -ENODEV;
+
+ return ata_pci_bmdma_init_one(pdev, ppi, &cy82c693_sht, NULL, 0);
+}
+
+static const struct pci_device_id cy82c693[] = {
+ { PCI_VDEVICE(CONTAQ, PCI_DEVICE_ID_CONTAQ_82C693), },
+
+ { },
+};
+
+static struct pci_driver cy82c693_pci_driver = {
+ .name = DRV_NAME,
+ .id_table = cy82c693,
+ .probe = cy82c693_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(cy82c693_pci_driver);
+
+MODULE_AUTHOR("Alan Cox");
+MODULE_DESCRIPTION("low-level driver for the CY82C693 PATA controller");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, cy82c693);
+MODULE_VERSION(DRV_VERSION);