v4.19.13 snapshot.
diff --git a/drivers/ide/ide-generic.c b/drivers/ide/ide-generic.c
new file mode 100644
index 0000000..80c0d69
--- /dev/null
+++ b/drivers/ide/ide-generic.c
@@ -0,0 +1,139 @@
+/*
+ * generic/default IDE host driver
+ *
+ * Copyright (C) 2004, 2008-2009 Bartlomiej Zolnierkiewicz
+ * This code was split off from ide.c. See it for original copyrights.
+ *
+ * May be copied or modified under the terms of the GNU General Public License.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/ide.h>
+#include <linux/pci_ids.h>
+
+/* FIXME: convert arm to use ide_platform host driver */
+#ifdef CONFIG_ARM
+#include <asm/irq.h>
+#endif
+
+#define DRV_NAME "ide_generic"
+
+static int probe_mask;
+module_param(probe_mask, int, 0);
+MODULE_PARM_DESC(probe_mask, "probe mask for legacy ISA IDE ports");
+
+static const struct ide_port_info ide_generic_port_info = {
+ .host_flags = IDE_HFLAG_NO_DMA,
+ .chipset = ide_generic,
+};
+
+#ifdef CONFIG_ARM
+static const u16 legacy_bases[] = { 0x1f0 };
+static const int legacy_irqs[] = { IRQ_HARDDISK };
+#elif defined(CONFIG_ALPHA)
+static const u16 legacy_bases[] = { 0x1f0, 0x170, 0x1e8, 0x168 };
+static const int legacy_irqs[] = { 14, 15, 11, 10 };
+#else
+static const u16 legacy_bases[] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 };
+static const int legacy_irqs[] = { 14, 15, 11, 10, 8, 12 };
+#endif
+
+static void ide_generic_check_pci_legacy_iobases(int *primary, int *secondary)
+{
+#ifdef CONFIG_PCI
+ struct pci_dev *p = NULL;
+ u16 val;
+
+ for_each_pci_dev(p) {
+ if (pci_resource_start(p, 0) == 0x1f0)
+ *primary = 1;
+ if (pci_resource_start(p, 2) == 0x170)
+ *secondary = 1;
+
+ /* Cyrix CS55{1,2}0 pre SFF MWDMA ATA on the bridge */
+ if (p->vendor == PCI_VENDOR_ID_CYRIX &&
+ (p->device == PCI_DEVICE_ID_CYRIX_5510 ||
+ p->device == PCI_DEVICE_ID_CYRIX_5520))
+ *primary = *secondary = 1;
+
+ /* Intel MPIIX - PIO ATA on non PCI side of bridge */
+ if (p->vendor == PCI_VENDOR_ID_INTEL &&
+ p->device == PCI_DEVICE_ID_INTEL_82371MX) {
+ pci_read_config_word(p, 0x6C, &val);
+ if (val & 0x8000) {
+ /* ATA port enabled */
+ if (val & 0x4000)
+ *secondary = 1;
+ else
+ *primary = 1;
+ }
+ }
+ }
+#endif
+}
+
+static int __init ide_generic_init(void)
+{
+ struct ide_hw hw, *hws[] = { &hw };
+ unsigned long io_addr;
+ int i, rc = 0, primary = 0, secondary = 0;
+
+ ide_generic_check_pci_legacy_iobases(&primary, &secondary);
+
+ if (!probe_mask) {
+ printk(KERN_INFO DRV_NAME ": please use \"probe_mask=0x3f\" "
+ "module parameter for probing all legacy ISA IDE ports\n");
+
+ if (primary == 0)
+ probe_mask |= 0x1;
+
+ if (secondary == 0)
+ probe_mask |= 0x2;
+ } else
+ printk(KERN_INFO DRV_NAME ": enforcing probing of I/O ports "
+ "upon user request\n");
+
+ for (i = 0; i < ARRAY_SIZE(legacy_bases); i++) {
+ io_addr = legacy_bases[i];
+
+ if ((probe_mask & (1 << i)) && io_addr) {
+ if (!request_region(io_addr, 8, DRV_NAME)) {
+ printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX "
+ "not free.\n",
+ DRV_NAME, io_addr, io_addr + 7);
+ rc = -EBUSY;
+ continue;
+ }
+
+ if (!request_region(io_addr + 0x206, 1, DRV_NAME)) {
+ printk(KERN_ERR "%s: I/O resource 0x%lX "
+ "not free.\n",
+ DRV_NAME, io_addr + 0x206);
+ release_region(io_addr, 8);
+ rc = -EBUSY;
+ continue;
+ }
+
+ memset(&hw, 0, sizeof(hw));
+ ide_std_init_ports(&hw, io_addr, io_addr + 0x206);
+#ifdef CONFIG_IA64
+ hw.irq = isa_irq_to_vector(legacy_irqs[i]);
+#else
+ hw.irq = legacy_irqs[i];
+#endif
+ rc = ide_host_add(&ide_generic_port_info, hws, 1, NULL);
+ if (rc) {
+ release_region(io_addr + 0x206, 1);
+ release_region(io_addr, 8);
+ }
+ }
+ }
+
+ return rc;
+}
+
+module_init(ide_generic_init);
+
+MODULE_LICENSE("GPL");