1 files changed, 0 insertions, 309 deletions
diff --git a/drivers/misc/cxl/vphb.c b/drivers/misc/cxl/vphb.c
deleted file mode 100644
index 6332db8044bd..000000000000
--- a/drivers/misc/cxl/vphb.c
+++ /dev/null
@@ -1,309 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright 2014 IBM Corp.
- */
-
-#include <linux/pci.h>
-#include <misc/cxl.h>
-#include "cxl.h"
-
-static int cxl_pci_probe_mode(struct pci_bus *bus)
-{
-	return PCI_PROBE_NORMAL;
-}
-
-static int cxl_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
-{
-	return -ENODEV;
-}
-
-static void cxl_teardown_msi_irqs(struct pci_dev *pdev)
-{
-	/*
-	 * MSI should never be set but need still need to provide this call
-	 * back.
-	 */
-}
-
-static bool cxl_pci_enable_device_hook(struct pci_dev *dev)
-{
-	struct pci_controller *phb;
-	struct cxl_afu *afu;
-	struct cxl_context *ctx;
-
-	phb = pci_bus_to_host(dev->bus);
-	afu = (struct cxl_afu *)phb->private_data;
-
-	if (!cxl_ops->link_ok(afu->adapter, afu)) {
-		dev_warn(&dev->dev, "%s: Device link is down, refusing to enable AFU\n", __func__);
-		return false;
-	}
-
-	dev->dev.archdata.dma_offset = PAGE_OFFSET;
-
-	/*
-	 * Allocate a context to do cxl things too.  If we eventually do real
-	 * DMA ops, we'll need a default context to attach them to
-	 */
-	ctx = cxl_dev_context_init(dev);
-	if (IS_ERR(ctx))
-		return false;
-	dev->dev.archdata.cxl_ctx = ctx;
-
-	return (cxl_ops->afu_check_and_enable(afu) == 0);
-}
-
-static void cxl_pci_disable_device(struct pci_dev *dev)
-{
-	struct cxl_context *ctx = cxl_get_context(dev);
-
-	if (ctx) {
-		if (ctx->status == STARTED) {
-			dev_err(&dev->dev, "Default context started\n");
-			return;
-		}
-		dev->dev.archdata.cxl_ctx = NULL;
-		cxl_release_context(ctx);
-	}
-}
-
-static void cxl_pci_reset_secondary_bus(struct pci_dev *dev)
-{
-	/* Should we do an AFU reset here ? */
-}
-
-static int cxl_pcie_cfg_record(u8 bus, u8 devfn)
-{
-	return (bus << 8) + devfn;
-}
-
-static inline struct cxl_afu *pci_bus_to_afu(struct pci_bus *bus)
-{
-	struct pci_controller *phb = bus ? pci_bus_to_host(bus) : NULL;
-
-	return phb ? phb->private_data : NULL;
-}
-
-static void cxl_afu_configured_put(struct cxl_afu *afu)
-{
-	atomic_dec_if_positive(&afu->configured_state);
-}
-
-static bool cxl_afu_configured_get(struct cxl_afu *afu)
-{
-	return atomic_inc_unless_negative(&afu->configured_state);
-}
-
-static inline int cxl_pcie_config_info(struct pci_bus *bus, unsigned int devfn,
-				       struct cxl_afu *afu, int *_record)
-{
-	int record;
-
-	record = cxl_pcie_cfg_record(bus->number, devfn);
-	if (record > afu->crs_num)
-		return PCIBIOS_DEVICE_NOT_FOUND;
-
-	*_record = record;
-	return 0;
-}
-
-static int cxl_pcie_read_config(struct pci_bus *bus, unsigned int devfn,
-				int offset, int len, u32 *val)
-{
-	int rc, record;
-	struct cxl_afu *afu;
-	u8 val8;
-	u16 val16;
-	u32 val32;
-
-	afu = pci_bus_to_afu(bus);
-	/* Grab a reader lock on afu. */
-	if (afu == NULL || !cxl_afu_configured_get(afu))
-		return PCIBIOS_DEVICE_NOT_FOUND;
-
-	rc = cxl_pcie_config_info(bus, devfn, afu, &record);
-	if (rc)
-		goto out;
-
-	switch (len) {
-	case 1:
-		rc = cxl_ops->afu_cr_read8(afu, record, offset,	&val8);
-		*val = val8;
-		break;
-	case 2:
-		rc = cxl_ops->afu_cr_read16(afu, record, offset, &val16);
-		*val = val16;
-		break;
-	case 4:
-		rc = cxl_ops->afu_cr_read32(afu, record, offset, &val32);
-		*val = val32;
-		break;
-	default:
-		WARN_ON(1);
-	}
-
-out:
-	cxl_afu_configured_put(afu);
-	return rc ? PCIBIOS_DEVICE_NOT_FOUND : 0;
-}
-
-static int cxl_pcie_write_config(struct pci_bus *bus, unsigned int devfn,
-				 int offset, int len, u32 val)
-{
-	int rc, record;
-	struct cxl_afu *afu;
-
-	afu = pci_bus_to_afu(bus);
-	/* Grab a reader lock on afu. */
-	if (afu == NULL || !cxl_afu_configured_get(afu))
-		return PCIBIOS_DEVICE_NOT_FOUND;
-
-	rc = cxl_pcie_config_info(bus, devfn, afu, &record);
-	if (rc)
-		goto out;
-
-	switch (len) {
-	case 1:
-		rc = cxl_ops->afu_cr_write8(afu, record, offset, val & 0xff);
-		break;
-	case 2:
-		rc = cxl_ops->afu_cr_write16(afu, record, offset, val & 0xffff);
-		break;
-	case 4:
-		rc = cxl_ops->afu_cr_write32(afu, record, offset, val);
-		break;
-	default:
-		WARN_ON(1);
-	}
-
-out:
-	cxl_afu_configured_put(afu);
-	return rc ? PCIBIOS_SET_FAILED : 0;
-}
-
-static struct pci_ops cxl_pcie_pci_ops =
-{
-	.read = cxl_pcie_read_config,
-	.write = cxl_pcie_write_config,
-};
-
-
-static struct pci_controller_ops cxl_pci_controller_ops =
-{
-	.probe_mode = cxl_pci_probe_mode,
-	.enable_device_hook = cxl_pci_enable_device_hook,
-	.disable_device = cxl_pci_disable_device,
-	.release_device = cxl_pci_disable_device,
-	.reset_secondary_bus = cxl_pci_reset_secondary_bus,
-	.setup_msi_irqs = cxl_setup_msi_irqs,
-	.teardown_msi_irqs = cxl_teardown_msi_irqs,
-};
-
-int cxl_pci_vphb_add(struct cxl_afu *afu)
-{
-	struct pci_controller *phb;
-	struct device_node *vphb_dn;
-	struct device *parent;
-
-	/*
-	 * If there are no AFU configuration records we won't have anything to
-	 * expose under the vPHB, so skip creating one, returning success since
-	 * this is still a valid case. This will also opt us out of EEH
-	 * handling since we won't have anything special to do if there are no
-	 * kernel drivers attached to the vPHB, and EEH handling is not yet
-	 * supported in the peer model.
-	 */
-	if (!afu->crs_num)
-		return 0;
-
-	/* The parent device is the adapter. Reuse the device node of
-	 * the adapter.
-	 * We don't seem to care what device node is used for the vPHB,
-	 * but tools such as lsvpd walk up the device parents looking
-	 * for a valid location code, so we might as well show devices
-	 * attached to the adapter as being located on that adapter.
-	 */
-	parent = afu->adapter->dev.parent;
-	vphb_dn = parent->of_node;
-
-	/* Alloc and setup PHB data structure */
-	phb = pcibios_alloc_controller(vphb_dn);
-	if (!phb)
-		return -ENODEV;
-
-	/* Setup parent in sysfs */
-	phb->parent = parent;
-
-	/* Setup the PHB using arch provided callback */
-	phb->ops = &cxl_pcie_pci_ops;
-	phb->cfg_addr = NULL;
-	phb->cfg_data = NULL;
-	phb->private_data = afu;
-	phb->controller_ops = cxl_pci_controller_ops;
-
-	/* Scan the bus */
-	pcibios_scan_phb(phb);
-	if (phb->bus == NULL)
-		return -ENXIO;
-
-	/* Set release hook on root bus */
-	pci_set_host_bridge_release(to_pci_host_bridge(phb->bus->bridge),
-				    pcibios_free_controller_deferred,
-				    (void *) phb);
-
-	/* Claim resources. This might need some rework as well depending
-	 * whether we are doing probe-only or not, like assigning unassigned
-	 * resources etc...
-	 */
-	pcibios_claim_one_bus(phb->bus);
-
-	/* Add probed PCI devices to the device model */
-	pci_bus_add_devices(phb->bus);
-
-	afu->phb = phb;
-
-	return 0;
-}
-
-void cxl_pci_vphb_remove(struct cxl_afu *afu)
-{
-	struct pci_controller *phb;
-
-	/* If there is no configuration record we won't have one of these */
-	if (!afu || !afu->phb)
-		return;
-
-	phb = afu->phb;
-	afu->phb = NULL;
-
-	pci_remove_root_bus(phb->bus);
-	/*
-	 * We don't free phb here - that's handled by
-	 * pcibios_free_controller_deferred()
-	 */
-}
-
-bool cxl_pci_is_vphb_device(struct pci_dev *dev)
-{
-	struct pci_controller *phb;
-
-	phb = pci_bus_to_host(dev->bus);
-
-	return (phb->ops == &cxl_pcie_pci_ops);
-}
-
-struct cxl_afu *cxl_pci_to_afu(struct pci_dev *dev)
-{
-	struct pci_controller *phb;
-
-	phb = pci_bus_to_host(dev->bus);
-
-	return (struct cxl_afu *)phb->private_data;
-}
-EXPORT_SYMBOL_GPL(cxl_pci_to_afu);
-
-unsigned int cxl_pci_to_cfg_record(struct pci_dev *dev)
-{
-	return cxl_pcie_cfg_record(dev->bus->number, dev->devfn);
-}
-EXPORT_SYMBOL_GPL(cxl_pci_to_cfg_record);